diff options
| author | Kargatum <dowlandtop@yandex.com> | 2021-05-20 22:24:08 +0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-20 17:24:08 +0200 |
| commit | d86a7b96c3cdb4b20012d01cde31941959436533 (patch) | |
| tree | cb586eda6ef174253d39d5a689a5523a9b02c2b1 /deps | |
| parent | 7f3734375e173d5e7e5c38113878be8bfb9f678d (diff) | |
feat(Deps/FmtLib): update fmtlib to 7.1.3 (#5950)
Diffstat (limited to 'deps')
31 files changed, 14290 insertions, 9238 deletions
diff --git a/deps/PackageList.txt b/deps/PackageList.txt index b7d0a6ca5a..c943319111 100644 --- a/deps/PackageList.txt +++ b/deps/PackageList.txt @@ -1,4 +1,4 @@ -AzerothCore uses (parts of or in whole) the following opensource software : +AzerothCore uses (parts of or in whole) the following opensource software: ACE (ADAPTIVE Communication Environment) http://www.cs.wustl.edu/~schmidt/ACE.html @@ -55,3 +55,7 @@ gSOAP (a portable development toolkit for C and C++ XML Web services and XML dat recastnavigation (Recast is state of the art navigation mesh construction toolset for games) https://github.com/memononen/recastnavigation Version: 64385e9ed0822427bca5814d03a3f4c4d7a6db9f + +{fmt} is an open-source formatting library providing a fast and safe alternative to C stdio and C++ iostreams. + https://github.com/fmtlib/fmt + Version: 7.1.3
\ No newline at end of file diff --git a/deps/fmt/CMakeLists.txt b/deps/fmt/CMakeLists.txt index 70c328864c..464dfde771 100644 --- a/deps/fmt/CMakeLists.txt +++ b/deps/fmt/CMakeLists.txt @@ -9,63 +9,56 @@ # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# +# User has manually chosen to ignore the git-tests, so throw them a warning. +# This is done EACH compile so they can be alerted about the consequences. +# include(CheckSymbolExists) set(strtod_l_headers stdlib.h) +if (APPLE) + set(strtod_l_headers ${strtod_l_headers} xlocale.h) +endif () + if(WIN32) - check_symbol_exists(open io.h HAVE_OPEN) check_symbol_exists(_strtod_l "${strtod_l_headers}" HAVE_STRTOD_L) else() - check_symbol_exists(open fcntl.h HAVE_OPEN) check_symbol_exists(strtod_l "${strtod_l_headers}" HAVE_STRTOD_L) endif() -function(add_headers VAR) - set(headers ${${VAR}}) - foreach (header ${ARGN}) - set(headers ${headers} fmt/${header}) - endforeach() - set(${VAR} ${headers} PARENT_SCOPE) -endfunction() - -# Define the fmt library, its includes and the needed defines. -add_headers(FMT_HEADERS - chrono.h - color.h - compile.h - core.h - format.h - format-inl.h - locale.h - ostream.h - printf.h - ranges.h - safe-duration-cast.h) +set(FMT_HEADERS + include/fmt/args.h + include/fmt/chrono.h + include/fmt/color.h + include/fmt/compile.h + include/fmt/core.h + include/fmt/format.h + include/fmt/format-inl.h + include/fmt/locale.h + include/fmt/os.h + include/fmt/ostream.h + include/fmt/printf.h + include/fmt/ranges.h) -set(FMT_SOURCES fmt/format.cc) +set(FMT_SOURCES + src/format.cc + src/os.cc) -if(HAVE_OPEN) - add_headers(FMT_HEADERS posix.h) - set(FMT_SOURCES ${FMT_SOURCES} fmt/posix.cc) -endif() - -add_library(fmt STATIC +add_library(fmt STATIC ${FMT_SOURCES} ${FMT_HEADERS}) -GroupSources(${CMAKE_CURRENT_SOURCE_DIR}) - if (HAVE_STRTOD_L) - target_compile_definitions(fmt - PUBLIC + target_compile_definitions(fmt + PUBLIC FMT_LOCALE) endif() target_include_directories(fmt PUBLIC - ${CMAKE_CURRENT_SOURCE_DIR}) + ${CMAKE_CURRENT_SOURCE_DIR}/include) target_link_libraries(fmt PRIVATE diff --git a/deps/fmt/CONTRIBUTING.md b/deps/fmt/CONTRIBUTING.md index 3532bd11e4..b82f145069 100644 --- a/deps/fmt/CONTRIBUTING.md +++ b/deps/fmt/CONTRIBUTING.md @@ -14,4 +14,7 @@ exceptions: * snake_case should be used instead of UpperCamelCase for function and type names +All documentation must adhere to the [Google Developer Documentation Style +Guide](https://developers.google.com/style). + Thanks for contributing! diff --git a/deps/fmt/ChangeLog.rst b/deps/fmt/ChangeLog.rst index c22b9b5112..9c171af050 100644 --- a/deps/fmt/ChangeLog.rst +++ b/deps/fmt/ChangeLog.rst @@ -1,7 +1,1278 @@ -6.0.0 - TBD ------------ +7.1.3 - 2020-11-24 +------------------ + +* Fixed handling of buffer boundaries in ``format_to_n`` + (`#1996 <https://github.com/fmtlib/fmt/issues/1996>`_, + `#2029 <https://github.com/fmtlib/fmt/issues/2029>`_). + +* Fixed linkage errors when linking with a shared library + (`#2011 <https://github.com/fmtlib/fmt/issues/2011>`_). + +* Reintroduced ostream support to range formatters + (`#2014 <https://github.com/fmtlib/fmt/issues/2014>`_). + +* Worked around an issue with mixing std versions in gcc + (`#2017 <https://github.com/fmtlib/fmt/issues/2017>`_). + +7.1.2 - 2020-11-04 +------------------ + +* Fixed floating point formatting with large precision + (`#1976 <https://github.com/fmtlib/fmt/issues/1976>`_). + +7.1.1 - 2020-11-01 +------------------ + +* Fixed ABI compatibility with 7.0.x + (`#1961 <https://github.com/fmtlib/fmt/issues/1961>`_). + +* Added the ``FMT_ARM_ABI_COMPATIBILITY`` macro to work around ABI + incompatibility between GCC and Clang on ARM + (`#1919 <https://github.com/fmtlib/fmt/issues/1919>`_). + +* Worked around a SFINAE bug in GCC 8 + (`#1957 <https://github.com/fmtlib/fmt/issues/1957>`_). -* Floating-point formatting is now locale-independent: +* Fixed linkage errors when building with GCC's LTO + (`#1955 <https://github.com/fmtlib/fmt/issues/1955>`_). + +* Fixed a compilation error when building without ``__builtin_clz`` or equivalent + (`#1968 <https://github.com/fmtlib/fmt/pull/1968>`_). + Thanks `@tohammer (Tobias Hammer) <https://github.com/tohammer>`_. + +* Fixed a sign conversion warning + (`#1964 <https://github.com/fmtlib/fmt/pull/1964>`_). + Thanks `@OptoCloud <https://github.com/OptoCloud>`_. + +7.1.0 - 2020-10-25 +------------------ + +* Switched from `Grisu3 + <https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf>`_ + to `Dragonbox <https://github.com/jk-jeon/dragonbox>`_ for the default + floating-point formatting which gives the shortest decimal representation + with round-trip guarantee and correct rounding + (`#1882 <https://github.com/fmtlib/fmt/pull/1882>`_, + `#1887 <https://github.com/fmtlib/fmt/pull/1887>`_, + `#1894 <https://github.com/fmtlib/fmt/pull/1894>`_). This makes {fmt} up to + 20-30x faster than common implementations of ``std::ostringstream`` and + ``sprintf`` on `dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_ + and faster than double-conversion and Ryū: + + .. image:: https://user-images.githubusercontent.com/576385/ + 95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png + + It is possible to get even better performance at the cost of larger binary + size by compiling with the ``FMT_USE_FULL_CACHE_DRAGONBOX`` macro set to 1. + + Thanks `@jk-jeon (Junekey Jeon) <https://github.com/jk-jeon>`_. + +* Added an experimental unsynchronized file output API which, together with + `format string compilation <https://fmt.dev/latest/api.html#compile-api>`_, + can give `5-9 times speed up compared to fprintf + <https://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html>`_ + on common platforms (`godbolt <https://godbolt.org/z/nsTcG8>`__): + + .. code:: c++ + + #include <fmt/os.h> + + int main() { + auto f = fmt::output_file("guide"); + f.print("The answer is {}.", 42); + } + +* Added a formatter for ``std::chrono::time_point<system_clock>`` + (`#1819 <https://github.com/fmtlib/fmt/issues/1819>`_, + `#1837 <https://github.com/fmtlib/fmt/pull/1837>`_). For example + (`godbolt <https://godbolt.org/z/c4M6fh>`__): + + .. code:: c++ + + #include <fmt/chrono.h> + + int main() { + auto now = std::chrono::system_clock::now(); + fmt::print("The time is {:%H:%M:%S}.\n", now); + } + + Thanks `@adamburgess (Adam Burgess) <https://github.com/adamburgess>`_. + +* Added support for ranges with non-const ``begin``/``end`` to ``fmt::join`` + (`#1784 <https://github.com/fmtlib/fmt/issues/1784>`_, + `#1786 <https://github.com/fmtlib/fmt/pull/1786>`_). For example + (`godbolt <https://godbolt.org/z/jP63Tv>`__): + + .. code:: c++ + + #include <fmt/ranges.h> + #include <range/v3/view/filter.hpp> + + int main() { + using std::literals::string_literals::operator""s; + auto strs = std::array{"a"s, "bb"s, "ccc"s}; + auto range = strs | ranges::views::filter( + [] (const std::string &x) { return x.size() != 2; } + ); + fmt::print("{}\n", fmt::join(range, "")); + } + + prints "accc". + + Thanks `@tonyelewis (Tony E Lewis) <https://github.com/tonyelewis>`_. + +* Added a ``memory_buffer::append`` overload that takes a range + (`#1806 <https://github.com/fmtlib/fmt/pull/1806>`_). + Thanks `@BRevzin (Barry Revzin) <https://github.com/BRevzin>`_. + +* Improved handling of single code units in ``FMT_COMPILE``. For example: + + .. code:: c++ + + #include <fmt/compile.h> + + char* f(char* buf) { + return fmt::format_to(buf, FMT_COMPILE("x{}"), 42); + } + + compiles to just (`godbolt <https://godbolt.org/z/5vncz3>`__): + + .. code:: asm + + _Z1fPc: + movb $120, (%rdi) + xorl %edx, %edx + cmpl $42, _ZN3fmt2v76detail10basic_dataIvE23zero_or_powers_of_10_32E+8(%rip) + movl $3, %eax + seta %dl + subl %edx, %eax + movzwl _ZN3fmt2v76detail10basic_dataIvE6digitsE+84(%rip), %edx + cltq + addq %rdi, %rax + movw %dx, -2(%rax) + ret + + Here a single ``mov`` instruction writes ``'x'`` (``$120``) to the output + buffer. + +* Added dynamic width support to format string compilation + (`#1809 <https://github.com/fmtlib/fmt/issues/1809>`_). + +* Improved error reporting for unformattable types: now you'll get the type name + directly in the error message instead of the note: + + .. code:: c++ + + #include <fmt/core.h> + + struct how_about_no {}; + + int main() { + fmt::print("{}", how_about_no()); + } + + Error (`godbolt <https://godbolt.org/z/GoxM4e>`__): + + ``fmt/core.h:1438:3: error: static_assert failed due to requirement + 'fmt::v7::formattable<how_about_no>()' "Cannot format an argument. + To make type T formattable provide a formatter<T> specialization: + https://fmt.dev/latest/api.html#udt" + ...`` + +* Added the `make_args_checked <https://fmt.dev/7.1.0/api.html#argument-lists>`_ + function template that allows you to write formatting functions with + compile-time format string checks and avoid binary code bloat + (`godbolt <https://godbolt.org/z/PEf9qr>`__): + + .. code:: c++ + + void vlog(const char* file, int line, fmt::string_view format, + fmt::format_args args) { + fmt::print("{}: {}: ", file, line); + fmt::vprint(format, args); + } + + template <typename S, typename... Args> + void log(const char* file, int line, const S& format, Args&&... args) { + vlog(file, line, format, + fmt::make_args_checked<Args...>(format, args...)); + } + + #define MY_LOG(format, ...) \ + log(__FILE__, __LINE__, FMT_STRING(format), __VA_ARGS__) + + MY_LOG("invalid squishiness: {}", 42); + +* Replaced ``snprintf`` fallback with a faster internal IEEE 754 ``float`` and + ``double`` formatter for arbitrary precision. For example + (`godbolt <https://godbolt.org/z/dPhWvj>`__): + + .. code:: c++ + + #include <fmt/core.h> + + int main() { + fmt::print("{:.500}\n", 4.9406564584124654E-324); + } + + prints + + ``4.9406564584124654417656879286822137236505980261432476442558568250067550727020875186529983636163599237979656469544571773092665671035593979639877479601078187812630071319031140452784581716784898210368871863605699873072305000638740915356498438731247339727316961514003171538539807412623856559117102665855668676818703956031062493194527159149245532930545654440112748012970999954193198940908041656332452475714786901472678015935523861155013480352649347201937902681071074917033322268447533357208324319360923829e-324``. + +* Made ``format_to_n`` and ``formatted_size`` part of the `core API + <https://fmt.dev/latest/api.html#core-api>`__ + (`godbolt <https://godbolt.org/z/sPjY1K>`__): + + .. code:: c++ + + #include <fmt/core.h> + + int main() { + char buffer[10]; + auto result = fmt::format_to_n(buffer, sizeof(buffer), "{}", 42); + } + +* Added ``fmt::format_to_n`` overload with format string compilation + (`#1764 <https://github.com/fmtlib/fmt/issues/1764>`_, + `#1767 <https://github.com/fmtlib/fmt/pull/1767>`_, + `#1869 <https://github.com/fmtlib/fmt/pull/1869>`_). For example + (`godbolt <https://godbolt.org/z/93h86q>`__): + + .. code:: c++ + + #include <fmt/compile.h> + + int main() { + char buffer[8]; + fmt::format_to_n(buffer, sizeof(buffer), FMT_COMPILE("{}"), 42); + } + + Thanks `@Kurkin (Dmitry Kurkin) <https://github.com/Kurkin>`_, + `@alexezeder (Alexey Ochapov) <https://github.com/alexezeder>`_. + +* Added ``fmt::format_to`` overload that take ``text_style`` + (`#1593 <https://github.com/fmtlib/fmt/issues/1593>`_, + `#1842 <https://github.com/fmtlib/fmt/issues/1842>`_, + `#1843 <https://github.com/fmtlib/fmt/pull/1843>`_). For example + (`godbolt <https://godbolt.org/z/91153r>`__): + + .. code:: c++ + + #include <fmt/color.h> + + int main() { + std::string out; + fmt::format_to(std::back_inserter(out), + fmt::emphasis::bold | fg(fmt::color::red), + "The answer is {}.", 42); + } + + Thanks `@Naios (Denis Blank) <https://github.com/Naios>`_. + +* Made the ``#`` specifier emit trailing zeros in addition to the decimal point + (`#1797 <https://github.com/fmtlib/fmt/issues/1797>`_). For example + (`godbolt <https://godbolt.org/z/bhdcW9>`__): + + .. code:: c++ + + #include <fmt/core.h> + + int main() { + fmt::print("{:#.2g}", 0.5); + } + + prints ``0.50``. + +* Changed the default floating point format to not include ``.0`` for + consistency with ``std::format`` and ``std::to_chars`` + (`#1893 <https://github.com/fmtlib/fmt/issues/1893>`_, + `#1943 <https://github.com/fmtlib/fmt/issues/1943>`_). It is possible to get + the decimal point and trailing zero with the ``#`` specifier. + +* Fixed an issue with floating-point formatting that could result in addition of + a non-significant trailing zero in rare cases e.g. ``1.00e-34`` instead of + ``1.0e-34`` (`#1873 <https://github.com/fmtlib/fmt/issues/1873>`_, + `#1917 <https://github.com/fmtlib/fmt/issues/1917>`_). + +* Made ``fmt::to_string`` fallback on ``ostream`` insertion operator if + the ``formatter`` specialization is not provided + (`#1815 <https://github.com/fmtlib/fmt/issues/1815>`_, + `#1829 <https://github.com/fmtlib/fmt/pull/1829>`_). + Thanks `@alexezeder (Alexey Ochapov) <https://github.com/alexezeder>`_. + +* Added support for the append mode to the experimental file API and + improved ``fcntl.h`` detection. + (`#1847 <https://github.com/fmtlib/fmt/pull/1847>`_, + `#1848 <https://github.com/fmtlib/fmt/pull/1848>`_). + Thanks `@t-wiser <https://github.com/t-wiser>`_. + +* Fixed handling of types that have both an implicit conversion operator and + an overloaded ``ostream`` insertion operator + (`#1766 <https://github.com/fmtlib/fmt/issues/1766>`_). + +* Fixed a slicing issue in an internal iterator type + (`#1822 <https://github.com/fmtlib/fmt/pull/1822>`_). + Thanks `@BRevzin (Barry Revzin) <https://github.com/BRevzin>`_. + +* Fixed an issue in locale-specific integer formatting + (`#1927 <https://github.com/fmtlib/fmt/issues/1927>`_). + +* Fixed handling of exotic code unit types + (`#1870 <https://github.com/fmtlib/fmt/issues/1870>`_, + `#1932 <https://github.com/fmtlib/fmt/issues/1932>`_). + +* Improved ``FMT_ALWAYS_INLINE`` + (`#1878 <https://github.com/fmtlib/fmt/pull/1878>`_). + Thanks `@jk-jeon (Junekey Jeon) <https://github.com/jk-jeon>`_. + +* Removed dependency on ``windows.h`` + (`#1900 <https://github.com/fmtlib/fmt/pull/1900>`_). + Thanks `@bernd5 (Bernd Baumanns) <https://github.com/bernd5>`_. + +* Optimized counting of decimal digits on MSVC + (`#1890 <https://github.com/fmtlib/fmt/pull/1890>`_). + Thanks `@mwinterb <https://github.com/mwinterb>`_. + +* Improved documentation + (`#1772 <https://github.com/fmtlib/fmt/issues/1772>`_, + `#1775 <https://github.com/fmtlib/fmt/pull/1775>`_, + `#1792 <https://github.com/fmtlib/fmt/pull/1792>`_, + `#1838 <https://github.com/fmtlib/fmt/pull/1838>`_, + `#1888 <https://github.com/fmtlib/fmt/pull/1888>`_, + `#1918 <https://github.com/fmtlib/fmt/pull/1918>`_, + `#1939 <https://github.com/fmtlib/fmt/pull/1939>`_). + Thanks `@leolchat (Léonard Gérard) <https://github.com/leolchat>`_, + `@pepsiman (Malcolm Parsons) <https://github.com/pepsiman>`_, + `@Klaim (Joël Lamotte) <https://github.com/Klaim>`_, + `@ravijanjam (Ravi J) <https://github.com/ravijanjam>`_, + `@francesco-st <https://github.com/francesco-st>`_, + `@udnaan (Adnan) <https://github.com/udnaan>`_. + +* Added the ``FMT_REDUCE_INT_INSTANTIATIONS`` CMake option that reduces the + binary code size at the cost of some integer formatting performance. This can + be useful for extremely memory-constrained embedded systems + (`#1778 <https://github.com/fmtlib/fmt/issues/1778>`_, + `#1781 <https://github.com/fmtlib/fmt/pull/1781>`_). + Thanks `@kammce (Khalil Estell) <https://github.com/kammce>`_. + +* Added the ``FMT_USE_INLINE_NAMESPACES`` macro to control usage of inline + namespaces (`#1945 <https://github.com/fmtlib/fmt/pull/1945>`_). + Thanks `@darklukee <https://github.com/darklukee>`_. + +* Improved build configuration + (`#1760 <https://github.com/fmtlib/fmt/pull/1760>`_, + `#1770 <https://github.com/fmtlib/fmt/pull/1770>`_, + `#1779 <https://github.com/fmtlib/fmt/issues/1779>`_, + `#1783 <https://github.com/fmtlib/fmt/pull/1783>`_, + `#1823 <https://github.com/fmtlib/fmt/pull/1823>`_). + Thanks `@dvetutnev (Dmitriy Vetutnev) <https://github.com/dvetutnev>`_, + `@xvitaly (Vitaly Zaitsev) <https://github.com/xvitaly>`_, + `@tambry (Raul Tambre) <https://github.com/tambry>`_, + `@medithe <https://github.com/medithe>`_, + `@martinwuehrer (Martin Wührer) <https://github.com/martinwuehrer>`_. + +* Fixed various warnings and compilation issues + (`#1790 <https://github.com/fmtlib/fmt/pull/1790>`_, + `#1802 <https://github.com/fmtlib/fmt/pull/1802>`_, + `#1808 <https://github.com/fmtlib/fmt/pull/1808>`_, + `#1810 <https://github.com/fmtlib/fmt/issues/1810>`_, + `#1811 <https://github.com/fmtlib/fmt/issues/1811>`_, + `#1812 <https://github.com/fmtlib/fmt/pull/1812>`_, + `#1814 <https://github.com/fmtlib/fmt/pull/1814>`_, + `#1816 <https://github.com/fmtlib/fmt/pull/1816>`_, + `#1817 <https://github.com/fmtlib/fmt/pull/1817>`_, + `#1818 <https://github.com/fmtlib/fmt/pull/1818>`_, + `#1825 <https://github.com/fmtlib/fmt/issues/1825>`_, + `#1836 <https://github.com/fmtlib/fmt/pull/1836>`_, + `#1855 <https://github.com/fmtlib/fmt/pull/1855>`_, + `#1856 <https://github.com/fmtlib/fmt/pull/1856>`_, + `#1860 <https://github.com/fmtlib/fmt/pull/1860>`_, + `#1877 <https://github.com/fmtlib/fmt/pull/1877>`_, + `#1879 <https://github.com/fmtlib/fmt/pull/1879>`_, + `#1880 <https://github.com/fmtlib/fmt/pull/1880>`_, + `#1896 <https://github.com/fmtlib/fmt/issues/1896>`_, + `#1897 <https://github.com/fmtlib/fmt/pull/1897>`_, + `#1898 <https://github.com/fmtlib/fmt/pull/1898>`_, + `#1904 <https://github.com/fmtlib/fmt/issues/1904>`_, + `#1908 <https://github.com/fmtlib/fmt/pull/1908>`_, + `#1911 <https://github.com/fmtlib/fmt/issues/1911>`_, + `#1912 <https://github.com/fmtlib/fmt/issues/1912>`_, + `#1928 <https://github.com/fmtlib/fmt/issues/1928>`_, + `#1929 <https://github.com/fmtlib/fmt/pull/1929>`_, + `#1935 <https://github.com/fmtlib/fmt/issues/1935>`_ + `#1937 <https://github.com/fmtlib/fmt/pull/1937>`_, + `#1942 <https://github.com/fmtlib/fmt/pull/1942>`_, + `#1949 <https://github.com/fmtlib/fmt/issues/1949>`_). + Thanks `@TheQwertiest <https://github.com/TheQwertiest>`_, + `@medithe <https://github.com/medithe>`_, + `@martinwuehrer (Martin Wührer) <https://github.com/martinwuehrer>`_, + `@n16h7hunt3r <https://github.com/n16h7hunt3r>`_, + `@Othereum (Seokjin Lee) <https://github.com/Othereum>`_, + `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, + `@AlexanderLanin (Alexander Lanin) <https://github.com/AlexanderLanin>`_, + `@gcerretani (Giovanni Cerretani) <https://github.com/gcerretani>`_, + `@chronoxor (Ivan Shynkarenka) <https://github.com/chronoxor>`_, + `@noizefloor (Jan Schwers) <https://github.com/noizefloor>`_, + `@akohlmey (Axel Kohlmeyer) <https://github.com/akohlmey>`_, + `@jk-jeon (Junekey Jeon) <https://github.com/jk-jeon>`_, + `@rimathia <https://github.com/rimathia>`_, + `@rglarix (Riccardo Ghetta (larix)) <https://github.com/rglarix>`_, + `@moiwi <https://github.com/moiwi>`_, + `@heckad (Kazantcev Andrey) <https://github.com/heckad>`_, + `@MarcDirven <https://github.com/MarcDirven>`_. + `@BartSiwek (Bart Siwek) <https://github.com/BartSiwek>`_, + `@darklukee <https://github.com/darklukee>`_. + +7.0.3 - 2020-08-06 +------------------ + +* Worked around broken ``numeric_limits`` for 128-bit integers + (`#1787 <https://github.com/fmtlib/fmt/issues/1787>`_). + +* Added error reporting on missing named arguments + (`#1796 <https://github.com/fmtlib/fmt/issues/1796>`_). + +* Stopped using 128-bit integers with clang-cl + (`#1800 <https://github.com/fmtlib/fmt/pull/1800>`_). + Thanks `@Kingcom <https://github.com/Kingcom>`_. + +* Fixed issues in locale-specific integer formatting + (`#1782 <https://github.com/fmtlib/fmt/issues/1782>`_, + `#1801 <https://github.com/fmtlib/fmt/issues/1801>`_). + +7.0.2 - 2020-07-29 +------------------ + +* Worked around broken ``numeric_limits`` for 128-bit integers + (`#1725 <https://github.com/fmtlib/fmt/issues/1725>`_). + +* Fixed compatibility with CMake 3.4 + (`#1779 <https://github.com/fmtlib/fmt/issues/1779>`_). + +* Fixed handling of digit separators in locale-specific formatting + (`#1782 <https://github.com/fmtlib/fmt/issues/1782>`_). + +7.0.1 - 2020-07-07 +------------------ + +* Updated the inline version namespace name. + +* Worked around a gcc bug in mangling of alias templates + (`#1753 <https://github.com/fmtlib/fmt/issues/1753>`_). + +* Fixed a linkage error on Windows + (`#1757 <https://github.com/fmtlib/fmt/issues/1757>`_). + Thanks `@Kurkin (Dmitry Kurkin) <https://github.com/Kurkin>`_. + +* Fixed minor issues with the documentation. + +7.0.0 - 2020-07-05 +------------------ + +* Reduced the library size. For example, on macOS a stripped test binary + statically linked with {fmt} `shrank from ~368k to less than 100k + <http://www.zverovich.net/2020/05/21/reducing-library-size.html>`_. + +* Added a simpler and more efficient `format string compilation API + <https://fmt.dev/7.0.0/api.html#compile-api>`_: + + .. code:: c++ + + #include <fmt/compile.h> + + // Converts 42 into std::string using the most efficient method and no + // runtime format string processing. + std::string s = fmt::format(FMT_COMPILE("{}"), 42); + + The old ``fmt::compile`` API is now deprecated. + +* Optimized integer formatting: ``format_to`` with format string compilation + and a stack-allocated buffer is now `faster than to_chars on both + libc++ and libstdc++ + <http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_. + +* Optimized handling of small format strings. For example, + + .. code:: c++ + + fmt::format("Result: {}: ({},{},{},{})", str1, str2, str3, str4, str5) + + is now ~40% faster (`#1685 <https://github.com/fmtlib/fmt/issues/1685>`_). + +* Applied extern templates to improve compile times when using the core API + and ``fmt/format.h`` (`#1452 <https://github.com/fmtlib/fmt/issues/1452>`_). + For example, on macOS with clang the compile time of a test translation unit + dropped from 2.3s to 0.3s with ``-O2`` and from 0.6s to 0.3s with the default + settings (``-O0``). + + Before (``-O2``):: + + % time c++ -c test.cc -I include -std=c++17 -O2 + c++ -c test.cc -I include -std=c++17 -O2 2.22s user 0.08s system 99% cpu 2.311 total + + After (``-O2``):: + + % time c++ -c test.cc -I include -std=c++17 -O2 + c++ -c test.cc -I include -std=c++17 -O2 0.26s user 0.04s system 98% cpu 0.303 total + + Before (default):: + + % time c++ -c test.cc -I include -std=c++17 + c++ -c test.cc -I include -std=c++17 0.53s user 0.06s system 98% cpu 0.601 total + + After (default):: + + % time c++ -c test.cc -I include -std=c++17 + c++ -c test.cc -I include -std=c++17 0.24s user 0.06s system 98% cpu 0.301 total + + It is still recommended to use ``fmt/core.h`` instead of ``fmt/format.h`` but + the compile time difference is now smaller. Thanks + `@alex3d <https://github.com/alex3d>`_ for the suggestion. + +* Named arguments are now stored on stack (no dynamic memory allocations) and + the compiled code is more compact and efficient. For example + + .. code:: c++ + + #include <fmt/core.h> + + int main() { + fmt::print("The answer is {answer}\n", fmt::arg("answer", 42)); + } + + compiles to just (`godbolt <https://godbolt.org/z/NcfEp_>`__) + + .. code:: asm + + .LC0: + .string "answer" + .LC1: + .string "The answer is {answer}\n" + main: + sub rsp, 56 + mov edi, OFFSET FLAT:.LC1 + mov esi, 23 + movabs rdx, 4611686018427387905 + lea rax, [rsp+32] + lea rcx, [rsp+16] + mov QWORD PTR [rsp+8], 1 + mov QWORD PTR [rsp], rax + mov DWORD PTR [rsp+16], 42 + mov QWORD PTR [rsp+32], OFFSET FLAT:.LC0 + mov DWORD PTR [rsp+40], 0 + call fmt::v6::vprint(fmt::v6::basic_string_view<char>, + fmt::v6::format_args) + xor eax, eax + add rsp, 56 + ret + + .L.str.1: + .asciz "answer" + +* Implemented compile-time checks for dynamic width and precision + (`#1614 <https://github.com/fmtlib/fmt/issues/1614>`_): + + .. code:: c++ + + #include <fmt/format.h> + + int main() { + fmt::print(FMT_STRING("{0:{1}}"), 42); + } + + now gives a compilation error because argument 1 doesn't exist:: + + In file included from test.cc:1: + include/fmt/format.h:2726:27: error: constexpr variable 'invalid_format' must be + initialized by a constant expression + FMT_CONSTEXPR_DECL bool invalid_format = + ^ + ... + include/fmt/core.h:569:26: note: in call to + '&checker(s, {}).context_->on_error(&"argument not found"[0])' + if (id >= num_args_) on_error("argument not found"); + ^ + +* Added sentinel support to ``fmt::join`` + (`#1689 <https://github.com/fmtlib/fmt/pull/1689>`_) + + .. code:: c++ + + struct zstring_sentinel {}; + bool operator==(const char* p, zstring_sentinel) { return *p == '\0'; } + bool operator!=(const char* p, zstring_sentinel) { return *p != '\0'; } + + struct zstring { + const char* p; + const char* begin() const { return p; } + zstring_sentinel end() const { return {}; } + }; + + auto s = fmt::format("{}", fmt::join(zstring{"hello"}, "_")); + // s == "h_e_l_l_o" + + Thanks `@BRevzin (Barry Revzin) <https://github.com/BRevzin>`_. + +* Added support for named arguments, ``clear`` and ``reserve`` to + ``dynamic_format_arg_store`` + (`#1655 <https://github.com/fmtlib/fmt/issues/1655>`_, + `#1663 <https://github.com/fmtlib/fmt/pull/1663>`_, + `#1674 <https://github.com/fmtlib/fmt/pull/1674>`_, + `#1677 <https://github.com/fmtlib/fmt/pull/1677>`_). + Thanks `@vsolontsov-ll (Vladimir Solontsov) + <https://github.com/vsolontsov-ll>`_. + +* Added support for the ``'c'`` format specifier to integral types for + compatibility with ``std::format`` + (`#1652 <https://github.com/fmtlib/fmt/issues/1652>`_). + +* Replaced the ``'n'`` format specifier with ``'L'`` for compatibility with + ``std::format`` (`#1624 <https://github.com/fmtlib/fmt/issues/1624>`_). + The ``'n'`` specifier can be enabled via the ``FMT_DEPRECATED_N_SPECIFIER`` + macro. + +* The ``'='`` format specifier is now disabled by default for compatibility with + ``std::format``. It can be enabled via the ``FMT_DEPRECATED_NUMERIC_ALIGN`` + macro. + +* Removed the following deprecated APIs: + + * ``FMT_STRING_ALIAS`` and ``fmt`` macros - replaced by ``FMT_STRING`` + * ``fmt::basic_string_view::char_type`` - replaced by + ``fmt::basic_string_view::value_type`` + * ``convert_to_int`` + * ``format_arg_store::types`` + * ``*parse_context`` - replaced by ``*format_parse_context`` + * ``FMT_DEPRECATED_INCLUDE_OS`` + * ``FMT_DEPRECATED_PERCENT`` - incompatible with ``std::format`` + * ``*writer`` - replaced by compiled format API + +* Renamed the ``internal`` namespace to ``detail`` + (`#1538 <https://github.com/fmtlib/fmt/issues/1538>`_). The former is still + provided as an alias if the ``FMT_USE_INTERNAL`` macro is defined. + +* Improved compatibility between ``fmt::printf`` with the standard specs + (`#1595 <https://github.com/fmtlib/fmt/issues/1595>`_, + `#1682 <https://github.com/fmtlib/fmt/pull/1682>`_, + `#1683 <https://github.com/fmtlib/fmt/pull/1683>`_, + `#1687 <https://github.com/fmtlib/fmt/pull/1687>`_, + `#1699 <https://github.com/fmtlib/fmt/pull/1699>`_). + Thanks `@rimathia <https://github.com/rimathia>`_. + +* Fixed handling of ``operator<<`` overloads that use ``copyfmt`` + (`#1666 <https://github.com/fmtlib/fmt/issues/1666>`_). + +* Added the ``FMT_OS`` CMake option to control inclusion of OS-specific APIs + in the fmt target. This can be useful for embedded platforms + (`#1654 <https://github.com/fmtlib/fmt/issues/1654>`_, + `#1656 <https://github.com/fmtlib/fmt/pull/1656>`_). + Thanks `@kwesolowski (Krzysztof Wesolowski) + <https://github.com/kwesolowski>`_. + +* Replaced ``FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION`` with the ``FMT_FUZZ`` + macro to prevent interferring with fuzzing of projects using {fmt} + (`#1650 <https://github.com/fmtlib/fmt/pull/1650>`_). + Thanks `@asraa (Asra Ali) <https://github.com/asraa>`_. + +* Fixed compatibility with emscripten + (`#1636 <https://github.com/fmtlib/fmt/issues/1636>`_, + `#1637 <https://github.com/fmtlib/fmt/pull/1637>`_). + Thanks `@ArthurSonzogni (Arthur Sonzogni) + <https://github.com/ArthurSonzogni>`_. + +* Improved documentation + (`#704 <https://github.com/fmtlib/fmt/issues/704>`_, + `#1643 <https://github.com/fmtlib/fmt/pull/1643>`_, + `#1660 <https://github.com/fmtlib/fmt/pull/1660>`_, + `#1681 <https://github.com/fmtlib/fmt/pull/1681>`_, + `#1691 <https://github.com/fmtlib/fmt/pull/1691>`_, + `#1706 <https://github.com/fmtlib/fmt/pull/1706>`_, + `#1714 <https://github.com/fmtlib/fmt/pull/1714>`_, + `#1721 <https://github.com/fmtlib/fmt/pull/1721>`_, + `#1739 <https://github.com/fmtlib/fmt/pull/1739>`_, + `#1740 <https://github.com/fmtlib/fmt/pull/1740>`_, + `#1741 <https://github.com/fmtlib/fmt/pull/1741>`_, + `#1751 <https://github.com/fmtlib/fmt/pull/1751>`_). + Thanks `@senior7515 (Alexander Gallego) <https://github.com/senior7515>`_, + `@lsr0 (Lindsay Roberts) <https://github.com/lsr0>`_, + `@puetzk (Kevin Puetz) <https://github.com/puetzk>`_, + `@fpelliccioni (Fernando Pelliccioni) <https://github.com/fpelliccioni>`_, + Alexey Kuzmenko, `@jelly (jelle van der Waa) <https://github.com/jelly>`_, + `@claremacrae (Clare Macrae) <https://github.com/claremacrae>`_, + `@jiapengwen (文佳鹏) <https://github.com/jiapengwen>`_, + `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, + `@alexey-milovidov <https://github.com/alexey-milovidov>`_. + +* Implemented various build configuration fixes and improvements + (`#1603 <https://github.com/fmtlib/fmt/pull/1603>`_, + `#1657 <https://github.com/fmtlib/fmt/pull/1657>`_, + `#1702 <https://github.com/fmtlib/fmt/pull/1702>`_, + `#1728 <https://github.com/fmtlib/fmt/pull/1728>`_). + Thanks `@scramsby (Scott Ramsby) <https://github.com/scramsby>`_, + `@jtojnar (Jan Tojnar) <https://github.com/jtojnar>`_, + `@orivej (Orivej Desh) <https://github.com/orivej>`_, + `@flagarde <https://github.com/flagarde>`_. + +* Fixed various warnings and compilation issues + (`#1616 <https://github.com/fmtlib/fmt/pull/1616>`_, + `#1620 <https://github.com/fmtlib/fmt/issues/1620>`_, + `#1622 <https://github.com/fmtlib/fmt/issues/1622>`_, + `#1625 <https://github.com/fmtlib/fmt/issues/1625>`_, + `#1627 <https://github.com/fmtlib/fmt/pull/1627>`_, + `#1628 <https://github.com/fmtlib/fmt/issues/1628>`_, + `#1629 <https://github.com/fmtlib/fmt/pull/1629>`_, + `#1631 <https://github.com/fmtlib/fmt/issues/1631>`_, + `#1633 <https://github.com/fmtlib/fmt/pull/1633>`_, + `#1649 <https://github.com/fmtlib/fmt/pull/1649>`_, + `#1658 <https://github.com/fmtlib/fmt/issues/1658>`_, + `#1661 <https://github.com/fmtlib/fmt/pull/1661>`_, + `#1667 <https://github.com/fmtlib/fmt/pull/1667>`_, + `#1668 <https://github.com/fmtlib/fmt/issues/1668>`_, + `#1669 <https://github.com/fmtlib/fmt/pull/1669>`_, + `#1692 <https://github.com/fmtlib/fmt/issues/1692>`_, + `#1696 <https://github.com/fmtlib/fmt/pull/1696>`_, + `#1697 <https://github.com/fmtlib/fmt/pull/1697>`_, + `#1707 <https://github.com/fmtlib/fmt/issues/1707>`_, + `#1712 <https://github.com/fmtlib/fmt/pull/1712>`_, + `#1716 <https://github.com/fmtlib/fmt/pull/1716>`_, + `#1722 <https://github.com/fmtlib/fmt/pull/1722>`_, + `#1724 <https://github.com/fmtlib/fmt/issues/1724>`_, + `#1729 <https://github.com/fmtlib/fmt/pull/1729>`_, + `#1738 <https://github.com/fmtlib/fmt/pull/1738>`_, + `#1742 <https://github.com/fmtlib/fmt/issues/1742>`_, + `#1743 <https://github.com/fmtlib/fmt/issues/1743>`_, + `#1744 <https://github.com/fmtlib/fmt/pull/1744>`_, + `#1747 <https://github.com/fmtlib/fmt/issues/1747>`_, + `#1750 <https://github.com/fmtlib/fmt/pull/1750>`_). + Thanks `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, + `@gabime (Gabi Melman) <https://github.com/gabime>`_, + `@johnor (Johan) <https://github.com/johnor>`_, + `@Kurkin (Dmitry Kurkin) <https://github.com/Kurkin>`_, + `@invexed (James Beach) <https://github.com/invexed>`_, + `@peterbell10 <https://github.com/peterbell10>`_, + `@daixtrose (Markus Werle) <https://github.com/daixtrose>`_, + `@petrutlucian94 (Lucian Petrut) <https://github.com/petrutlucian94>`_, + `@Neargye (Daniil Goncharov) <https://github.com/Neargye>`_, + `@ambitslix (Attila M. Szilagyi) <https://github.com/ambitslix>`_, + `@gabime (Gabi Melman) <https://github.com/gabime>`_, + `@erthink (Leonid Yuriev) <https://github.com/erthink>`_, + `@tohammer (Tobias Hammer) <https://github.com/tohammer>`_, + `@0x8000-0000 (Florin Iucha) <https://github.com/0x8000-0000>`_. + +6.2.1 - 2020-05-09 +------------------ + +* Fixed ostream support in ``sprintf`` + (`#1631 <https://github.com/fmtlib/fmt/issues/1631>`_). + +* Fixed type detection when using implicit conversion to ``string_view`` and + ostream ``operator<<`` inconsistently + (`#1662 <https://github.com/fmtlib/fmt/issues/1662>`_). + +6.2.0 - 2020-04-05 +------------------ + +* Improved error reporting when trying to format an object of a non-formattable + type: + + .. code:: c++ + + fmt::format("{}", S()); + + now gives:: + + include/fmt/core.h:1015:5: error: static_assert failed due to requirement + 'formattable' "Cannot format argument. To make type T formattable provide a + formatter<T> specialization: + https://fmt.dev/latest/api.html#formatting-user-defined-types" + static_assert( + ^ + ... + note: in instantiation of function template specialization + 'fmt::v6::format<char [3], S, char>' requested here + fmt::format("{}", S()); + ^ + + if ``S`` is not formattable. + +* Reduced the library size by ~10%. + +* Always print decimal point if ``#`` is specified + (`#1476 <https://github.com/fmtlib/fmt/issues/1476>`_, + `#1498 <https://github.com/fmtlib/fmt/issues/1498>`_): + + .. code:: c++ + + fmt::print("{:#.0f}", 42.0); + + now prints ``42.`` + +* Implemented the ``'L'`` specifier for locale-specific numeric formatting to + improve compatibility with ``std::format``. The ``'n'`` specifier is now + deprecated and will be removed in the next major release. + +* Moved OS-specific APIs such as ``windows_error`` from ``fmt/format.h`` to + ``fmt/os.h``. You can define ``FMT_DEPRECATED_INCLUDE_OS`` to automatically + include ``fmt/os.h`` from ``fmt/format.h`` for compatibility but this will be + disabled in the next major release. + +* Added precision overflow detection in floating-point formatting. + +* Implemented detection of invalid use of ``fmt::arg``. + +* Used ``type_identity`` to block unnecessary template argument deduction. + Thanks Tim Song. + +* Improved UTF-8 handling + (`#1109 <https://github.com/fmtlib/fmt/issues/1109>`_): + + .. code:: c++ + + fmt::print("┌{0:─^{2}}┐\n" + "│{1: ^{2}}│\n" + "└{0:─^{2}}┘\n", "", "Привет, мир!", 20); + + now prints:: + + ┌────────────────────┐ + │ Привет, мир! │ + └────────────────────┘ + + on systems that support Unicode. + +* Added experimental dynamic argument storage + (`#1170 <https://github.com/fmtlib/fmt/issues/1170>`_, + `#1584 <https://github.com/fmtlib/fmt/pull/1584>`_): + + .. code:: c++ + + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back("answer"); + store.push_back(42); + fmt::vprint("The {} is {}.\n", store); + + prints:: + + The answer is 42. + + Thanks `@vsolontsov-ll (Vladimir Solontsov) + <https://github.com/vsolontsov-ll>`_. + +* Made ``fmt::join`` accept ``initializer_list`` + (`#1591 <https://github.com/fmtlib/fmt/pull/1591>`_). + Thanks `@Rapotkinnik (Nikolay Rapotkin) <https://github.com/Rapotkinnik>`_. + +* Fixed handling of empty tuples + (`#1588 <https://github.com/fmtlib/fmt/issues/1588>`_). + +* Fixed handling of output iterators in ``format_to_n`` + (`#1506 <https://github.com/fmtlib/fmt/issues/1506>`_). + +* Fixed formatting of ``std::chrono::duration`` types to wide output + (`#1533 <https://github.com/fmtlib/fmt/pull/1533>`_). + Thanks `@zeffy (pilao) <https://github.com/zeffy>`_. + +* Added const ``begin`` and ``end`` overload to buffers + (`#1553 <https://github.com/fmtlib/fmt/pull/1553>`_). + Thanks `@dominicpoeschko <https://github.com/dominicpoeschko>`_. + +* Added the ability to disable floating-point formatting via ``FMT_USE_FLOAT``, + ``FMT_USE_DOUBLE`` and ``FMT_USE_LONG_DOUBLE`` macros for extremely + memory-constrained embedded system + (`#1590 <https://github.com/fmtlib/fmt/pull/1590>`_). + Thanks `@albaguirre (Alberto Aguirre) <https://github.com/albaguirre>`_. + +* Made ``FMT_STRING`` work with ``constexpr`` ``string_view`` + (`#1589 <https://github.com/fmtlib/fmt/pull/1589>`_). + Thanks `@scramsby (Scott Ramsby) <https://github.com/scramsby>`_. + +* Implemented a minor optimization in the format string parser + (`#1560 <https://github.com/fmtlib/fmt/pull/1560>`_). + Thanks `@IkarusDeveloper <https://github.com/IkarusDeveloper>`_. + +* Improved attribute detection + (`#1469 <https://github.com/fmtlib/fmt/pull/1469>`_, + `#1475 <https://github.com/fmtlib/fmt/pull/1475>`_, + `#1576 <https://github.com/fmtlib/fmt/pull/1576>`_). + Thanks `@federico-busato (Federico) <https://github.com/federico-busato>`_, + `@chronoxor (Ivan Shynkarenka) <https://github.com/chronoxor>`_, + `@refnum <https://github.com/refnum>`_. + +* Improved documentation + (`#1481 <https://github.com/fmtlib/fmt/pull/1481>`_, + `#1523 <https://github.com/fmtlib/fmt/pull/1523>`_). + Thanks `@JackBoosY (Jack·Boos·Yu) <https://github.com/JackBoosY>`_, + `@imba-tjd (谭九鼎) <https://github.com/imba-tjd>`_. + +* Fixed symbol visibility on Linux when compiling with ``-fvisibility=hidden`` + (`#1535 <https://github.com/fmtlib/fmt/pull/1535>`_). + Thanks `@milianw (Milian Wolff) <https://github.com/milianw>`_. + +* Implemented various build configuration fixes and improvements + (`#1264 <https://github.com/fmtlib/fmt/issues/1264>`_, + `#1460 <https://github.com/fmtlib/fmt/issues/1460>`_, + `#1534 <https://github.com/fmtlib/fmt/pull/1534>`_, + `#1536 <https://github.com/fmtlib/fmt/issues/1536>`_, + `#1545 <https://github.com/fmtlib/fmt/issues/1545>`_, + `#1546 <https://github.com/fmtlib/fmt/pull/1546>`_, + `#1566 <https://github.com/fmtlib/fmt/issues/1566>`_, + `#1582 <https://github.com/fmtlib/fmt/pull/1582>`_, + `#1597 <https://github.com/fmtlib/fmt/issues/1597>`_, + `#1598 <https://github.com/fmtlib/fmt/pull/1598>`_). + Thanks `@ambitslix (Attila M. Szilagyi) <https://github.com/ambitslix>`_, + `@jwillikers (Jordan Williams) <https://github.com/jwillikers>`_, + `@stac47 (Laurent Stacul) <https://github.com/stac47>`_. + +* Fixed various warnings and compilation issues + (`#1433 <https://github.com/fmtlib/fmt/pull/1433>`_, + `#1461 <https://github.com/fmtlib/fmt/issues/1461>`_, + `#1470 <https://github.com/fmtlib/fmt/pull/1470>`_, + `#1480 <https://github.com/fmtlib/fmt/pull/1480>`_, + `#1485 <https://github.com/fmtlib/fmt/pull/1485>`_, + `#1492 <https://github.com/fmtlib/fmt/pull/1492>`_, + `#1493 <https://github.com/fmtlib/fmt/issues/1493>`_, + `#1504 <https://github.com/fmtlib/fmt/issues/1504>`_, + `#1505 <https://github.com/fmtlib/fmt/pull/1505>`_, + `#1512 <https://github.com/fmtlib/fmt/pull/1512>`_, + `#1515 <https://github.com/fmtlib/fmt/issues/1515>`_, + `#1516 <https://github.com/fmtlib/fmt/pull/1516>`_, + `#1518 <https://github.com/fmtlib/fmt/pull/1518>`_, + `#1519 <https://github.com/fmtlib/fmt/pull/1519>`_, + `#1520 <https://github.com/fmtlib/fmt/pull/1520>`_, + `#1521 <https://github.com/fmtlib/fmt/pull/1521>`_, + `#1522 <https://github.com/fmtlib/fmt/pull/1522>`_, + `#1524 <https://github.com/fmtlib/fmt/issues/1524>`_, + `#1530 <https://github.com/fmtlib/fmt/pull/1530>`_, + `#1531 <https://github.com/fmtlib/fmt/issues/1531>`_, + `#1532 <https://github.com/fmtlib/fmt/pull/1532>`_, + `#1539 <https://github.com/fmtlib/fmt/issues/1539>`_, + `#1547 <https://github.com/fmtlib/fmt/issues/1547>`_, + `#1548 <https://github.com/fmtlib/fmt/issues/1548>`_, + `#1554 <https://github.com/fmtlib/fmt/pull/1554>`_, + `#1567 <https://github.com/fmtlib/fmt/issues/1567>`_, + `#1568 <https://github.com/fmtlib/fmt/pull/1568>`_, + `#1569 <https://github.com/fmtlib/fmt/pull/1569>`_, + `#1571 <https://github.com/fmtlib/fmt/pull/1571>`_, + `#1573 <https://github.com/fmtlib/fmt/pull/1573>`_, + `#1575 <https://github.com/fmtlib/fmt/pull/1575>`_, + `#1581 <https://github.com/fmtlib/fmt/pull/1581>`_, + `#1583 <https://github.com/fmtlib/fmt/issues/1583>`_, + `#1586 <https://github.com/fmtlib/fmt/issues/1586>`_, + `#1587 <https://github.com/fmtlib/fmt/issues/1587>`_, + `#1594 <https://github.com/fmtlib/fmt/issues/1594>`_, + `#1596 <https://github.com/fmtlib/fmt/pull/1596>`_, + `#1604 <https://github.com/fmtlib/fmt/issues/1604>`_, + `#1606 <https://github.com/fmtlib/fmt/pull/1606>`_, + `#1607 <https://github.com/fmtlib/fmt/issues/1607>`_, + `#1609 <https://github.com/fmtlib/fmt/issues/1609>`_). + Thanks `@marti4d (Chris Martin) <https://github.com/marti4d>`_, + `@iPherian <https://github.com/iPherian>`_, + `@parkertomatoes <https://github.com/parkertomatoes>`_, + `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, + `@chronoxor (Ivan Shynkarenka) <https://github.com/chronoxor>`_, + `@DanielaE (Daniela Engert) <https://github.com/DanielaE>`_, + `@torsten48 <https://github.com/torsten48>`_, + `@tohammer (Tobias Hammer) <https://github.com/tohammer>`_, + `@lefticus (Jason Turner) <https://github.com/lefticus>`_, + `@ryusakki (Haise) <https://github.com/ryusakki>`_, + `@adnsv (Alex Denisov) <https://github.com/adnsv>`_, + `@fghzxm <https://github.com/fghzxm>`_, + `@refnum <https://github.com/refnum>`_, + `@pramodk (Pramod Kumbhar) <https://github.com/pramodk>`_, + `@Spirrwell <https://github.com/Spirrwell>`_, + `@scramsby (Scott Ramsby) <https://github.com/scramsby>`_. + +6.1.2 - 2019-12-11 +------------------ + +* Fixed ABI compatibility with ``libfmt.so.6.0.0`` + (`#1471 <https://github.com/fmtlib/fmt/issues/1471>`_). + +* Fixed handling types convertible to ``std::string_view`` + (`#1451 <https://github.com/fmtlib/fmt/pull/1451>`_). + Thanks `@denizevrenci (Deniz Evrenci) <https://github.com/denizevrenci>`_. + +* Made CUDA test an opt-in enabled via the ``FMT_CUDA_TEST`` CMake option. + +* Fixed sign conversion warnings + (`#1440 <https://github.com/fmtlib/fmt/pull/1440>`_). + Thanks `@0x8000-0000 (Florin Iucha) <https://github.com/0x8000-0000>`_. + +6.1.1 - 2019-12-04 +------------------ + +* Fixed shared library build on Windows + (`#1443 <https://github.com/fmtlib/fmt/pull/1443>`_, + `#1445 <https://github.com/fmtlib/fmt/issues/1445>`_, + `#1446 <https://github.com/fmtlib/fmt/pull/1446>`_, + `#1450 <https://github.com/fmtlib/fmt/issues/1450>`_). + Thanks `@egorpugin (Egor Pugin) <https://github.com/egorpugin>`_, + `@bbolli (Beat Bolli) <https://github.com/bbolli>`_. + +* Added a missing decimal point in exponent notation with trailing zeros. + +* Removed deprecated ``format_arg_store::TYPES``. + +6.1.0 - 2019-12-01 +------------------ + +* {fmt} now formats IEEE 754 ``float`` and ``double`` using the shortest decimal + representation with correct rounding by default: + + .. code:: c++ + + #include <cmath> + #include <fmt/core.h> + + int main() { + fmt::print("{}", M_PI); + } + + prints ``3.141592653589793``. + +* Made the fast binary to decimal floating-point formatter the default, + simplified it and improved performance. {fmt} is now 15 times faster than + libc++'s ``std::ostringstream``, 11 times faster than ``printf`` and 10% + faster than double-conversion on `dtoa-benchmark + <https://github.com/fmtlib/dtoa-benchmark>`_: + + ================== ========= ======= + Function Time (ns) Speedup + ================== ========= ======= + ostringstream 1,346.30 1.00x + ostrstream 1,195.74 1.13x + sprintf 995.08 1.35x + doubleconv 99.10 13.59x + fmt 88.34 15.24x + ================== ========= ======= + + .. image:: https://user-images.githubusercontent.com/576385/ + 69767160-cdaca400-112f-11ea-9fc5-347c9f83caad.png + +* {fmt} no longer converts ``float`` arguments to ``double``. In particular this + improves the default (shortest) representation of floats and makes + ``fmt::format`` consistent with ``std::format`` specs + (`#1336 <https://github.com/fmtlib/fmt/issues/1336>`_, + `#1353 <https://github.com/fmtlib/fmt/issues/1353>`_, + `#1360 <https://github.com/fmtlib/fmt/pull/1360>`_, + `#1361 <https://github.com/fmtlib/fmt/pull/1361>`_): + + .. code:: c++ + + fmt::print("{}", 0.1f); + + prints ``0.1`` instead of ``0.10000000149011612``. + + Thanks `@orivej (Orivej Desh) <https://github.com/orivej>`_. + +* Made floating-point formatting output consistent with ``printf``/iostreams + (`#1376 <https://github.com/fmtlib/fmt/issues/1376>`_, + `#1417 <https://github.com/fmtlib/fmt/issues/1417>`_). + +* Added support for 128-bit integers + (`#1287 <https://github.com/fmtlib/fmt/pull/1287>`_): + + .. code:: c++ + + fmt::print("{}", std::numeric_limits<__int128_t>::max()); + + prints ``170141183460469231731687303715884105727``. + + Thanks `@denizevrenci (Deniz Evrenci) <https://github.com/denizevrenci>`_. + +* The overload of ``print`` that takes ``text_style`` is now atomic, i.e. the + output from different threads doesn't interleave + (`#1351 <https://github.com/fmtlib/fmt/pull/1351>`_). + Thanks `@tankiJong (Tanki Zhang) <https://github.com/tankiJong>`_. + +* Made compile time in the header-only mode ~20% faster by reducing the number + of template instantiations. ``wchar_t`` overload of ``vprint`` was moved from + ``fmt/core.h`` to ``fmt/format.h``. + +* Added an overload of ``fmt::join`` that works with tuples + (`#1322 <https://github.com/fmtlib/fmt/issues/1322>`_, + `#1330 <https://github.com/fmtlib/fmt/pull/1330>`_): + + .. code:: c++ + + #include <tuple> + #include <fmt/ranges.h> + + int main() { + std::tuple<char, int, float> t{'a', 1, 2.0f}; + fmt::print("{}", t); + } + + prints ``('a', 1, 2.0)``. + + Thanks `@jeremyong (Jeremy Ong) <https://github.com/jeremyong>`_. + +* Changed formatting of octal zero with prefix from "00" to "0": + + .. code:: c++ + + fmt::print("{:#o}", 0); + + prints ``0``. + +* The locale is now passed to ostream insertion (``<<``) operators + (`#1406 <https://github.com/fmtlib/fmt/pull/1406>`_): + + .. code:: c++ + + #include <fmt/locale.h> + #include <fmt/ostream.h> + + struct S { + double value; + }; + + std::ostream& operator<<(std::ostream& os, S s) { + return os << s.value; + } + + int main() { + auto s = fmt::format(std::locale("fr_FR.UTF-8"), "{}", S{0.42}); + // s == "0,42" + } + + Thanks `@dlaugt (Daniel Laügt) <https://github.com/dlaugt>`_. + +* Locale-specific number formatting now uses grouping + (`#1393 <https://github.com/fmtlib/fmt/issues/1393>`_ + `#1394 <https://github.com/fmtlib/fmt/pull/1394>`_). + Thanks `@skrdaniel <https://github.com/skrdaniel>`_. + +* Fixed handling of types with deleted implicit rvalue conversion to + ``const char**`` (`#1421 <https://github.com/fmtlib/fmt/issues/1421>`_): + + .. code:: c++ + + struct mystring { + operator const char*() const&; + operator const char*() &; + operator const char*() const&& = delete; + operator const char*() && = delete; + }; + mystring str; + fmt::print("{}", str); // now compiles + +* Enums are now mapped to correct underlying types instead of ``int`` + (`#1286 <https://github.com/fmtlib/fmt/pull/1286>`_). + Thanks `@agmt (Egor Seredin) <https://github.com/agmt>`_. + +* Enum classes are no longer implicitly converted to ``int`` + (`#1424 <https://github.com/fmtlib/fmt/issues/1424>`_). + +* Added ``basic_format_parse_context`` for consistency with C++20 + ``std::format`` and deprecated ``basic_parse_context``. + +* Fixed handling of UTF-8 in precision + (`#1389 <https://github.com/fmtlib/fmt/issues/1389>`_, + `#1390 <https://github.com/fmtlib/fmt/pull/1390>`_). + Thanks `@tajtiattila (Attila Tajti) <https://github.com/tajtiattila>`_. + +* {fmt} can now be installed on Linux, macOS and Windows with + `Conda <https://docs.conda.io/en/latest/>`__ using its + `conda-forge <https://conda-forge.org>`__ + `package <https://github.com/conda-forge/fmt-feedstock>`__ + (`#1410 <https://github.com/fmtlib/fmt/pull/1410>`_):: + + conda install -c conda-forge fmt + + Thanks `@tdegeus (Tom de Geus) <https://github.com/tdegeus>`_. + +* Added a CUDA test (`#1285 <https://github.com/fmtlib/fmt/pull/1285>`_, + `#1317 <https://github.com/fmtlib/fmt/pull/1317>`_). + Thanks `@luncliff (Park DongHa) <https://github.com/luncliff>`_ and + `@risa2000 <https://github.com/risa2000>`_. + +* Improved documentation (`#1276 <https://github.com/fmtlib/fmt/pull/1276>`_, + `#1291 <https://github.com/fmtlib/fmt/issues/1291>`_, + `#1296 <https://github.com/fmtlib/fmt/issues/1296>`_, + `#1315 <https://github.com/fmtlib/fmt/pull/1315>`_, + `#1332 <https://github.com/fmtlib/fmt/pull/1332>`_, + `#1337 <https://github.com/fmtlib/fmt/pull/1337>`_, + `#1395 <https://github.com/fmtlib/fmt/issues/1395>`_ + `#1418 <https://github.com/fmtlib/fmt/pull/1418>`_). + Thanks + `@waywardmonkeys (Bruce Mitchener) <https://github.com/waywardmonkeys>`_, + `@pauldreik (Paul Dreik) <https://github.com/pauldreik>`_, + `@jackoalan (Jack Andersen) <https://github.com/jackoalan>`_. + +* Various code improvements + (`#1358 <https://github.com/fmtlib/fmt/pull/1358>`_, + `#1407 <https://github.com/fmtlib/fmt/pull/1407>`_). + Thanks `@orivej (Orivej Desh) <https://github.com/orivej>`_, + `@dpacbach (David P. Sicilia) <https://github.com/dpacbach>`_, + +* Fixed compile-time format string checks for user-defined types + (`#1292 <https://github.com/fmtlib/fmt/issues/1292>`_). + +* Worked around a false positive in ``unsigned-integer-overflow`` sanitizer + (`#1377 <https://github.com/fmtlib/fmt/issues/1377>`_). + +* Fixed various warnings and compilation issues + (`#1273 <https://github.com/fmtlib/fmt/issues/1273>`_, + `#1278 <https://github.com/fmtlib/fmt/pull/1278>`_, + `#1280 <https://github.com/fmtlib/fmt/pull/1280>`_, + `#1281 <https://github.com/fmtlib/fmt/issues/1281>`_, + `#1288 <https://github.com/fmtlib/fmt/issues/1288>`_, + `#1290 <https://github.com/fmtlib/fmt/pull/1290>`_, + `#1301 <https://github.com/fmtlib/fmt/pull/1301>`_, + `#1305 <https://github.com/fmtlib/fmt/issues/1305>`_, + `#1306 <https://github.com/fmtlib/fmt/issues/1306>`_, + `#1309 <https://github.com/fmtlib/fmt/issues/1309>`_, + `#1312 <https://github.com/fmtlib/fmt/pull/1312>`_, + `#1313 <https://github.com/fmtlib/fmt/issues/1313>`_, + `#1316 <https://github.com/fmtlib/fmt/issues/1316>`_, + `#1319 <https://github.com/fmtlib/fmt/issues/1319>`_, + `#1320 <https://github.com/fmtlib/fmt/pull/1320>`_, + `#1326 <https://github.com/fmtlib/fmt/pull/1326>`_, + `#1328 <https://github.com/fmtlib/fmt/pull/1328>`_, + `#1344 <https://github.com/fmtlib/fmt/issues/1344>`_, + `#1345 <https://github.com/fmtlib/fmt/pull/1345>`_, + `#1347 <https://github.com/fmtlib/fmt/pull/1347>`_, + `#1349 <https://github.com/fmtlib/fmt/pull/1349>`_, + `#1354 <https://github.com/fmtlib/fmt/issues/1354>`_, + `#1362 <https://github.com/fmtlib/fmt/issues/1362>`_, + `#1366 <https://github.com/fmtlib/fmt/issues/1366>`_, + `#1364 <https://github.com/fmtlib/fmt/pull/1364>`_, + `#1370 <https://github.com/fmtlib/fmt/pull/1370>`_, + `#1371 <https://github.com/fmtlib/fmt/pull/1371>`_, + `#1385 <https://github.com/fmtlib/fmt/issues/1385>`_, + `#1388 <https://github.com/fmtlib/fmt/issues/1388>`_, + `#1397 <https://github.com/fmtlib/fmt/pull/1397>`_, + `#1414 <https://github.com/fmtlib/fmt/pull/1414>`_, + `#1416 <https://github.com/fmtlib/fmt/pull/1416>`_, + `#1422 <https://github.com/fmtlib/fmt/issues/1422>`_ + `#1427 <https://github.com/fmtlib/fmt/pull/1427>`_, + `#1431 <https://github.com/fmtlib/fmt/issues/1431>`_, + `#1433 <https://github.com/fmtlib/fmt/pull/1433>`_). + Thanks `@hhb <https://github.com/hhb>`_, + `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, + `@gabime (Gabi Melman) <https://github.com/gabime>`_, + `@neheb (Rosen Penev) <https://github.com/neheb>`_, + `@vedranmiletic (Vedran Miletić) <https://github.com/vedranmiletic>`_, + `@dkavolis (Daumantas Kavolis) <https://github.com/dkavolis>`_, + `@mwinterb <https://github.com/mwinterb>`_, + `@orivej (Orivej Desh) <https://github.com/orivej>`_, + `@denizevrenci (Deniz Evrenci) <https://github.com/denizevrenci>`_ + `@leonklingele <https://github.com/leonklingele>`_, + `@chronoxor (Ivan Shynkarenka) <https://github.com/chronoxor>`_, + `@kent-tri <https://github.com/kent-tri>`_, + `@0x8000-0000 (Florin Iucha) <https://github.com/0x8000-0000>`_, + `@marti4d (Chris Martin) <https://github.com/marti4d>`_. + +6.0.0 - 2019-08-26 +------------------ + +* Switched to the `MIT license + <https://github.com/fmtlib/fmt/blob/5a4b24613ba16cc689977c3b5bd8274a3ba1dd1f/LICENSE.rst>`_ + with an optional exception that allows distributing binary code without + attribution. + +* Floating-point formatting is now locale-independent by default: .. code:: c++ @@ -25,8 +1296,8 @@ prints "value = 4,2". * Added an experimental Grisu floating-point formatting algorithm - implementation (disabled by default). To enable it define ``FMT_USE_GRISU`` - macro to 1 before including ``fmt/format.h``: + implementation (disabled by default). To enable it compile with the + ``FMT_USE_GRISU`` macro defined to 1: .. code:: c++ @@ -36,14 +1307,20 @@ auto s = fmt::format("{}", 4.2); // formats 4.2 using Grisu With Grisu enabled, {fmt} is 13x faster than ``std::ostringstream`` (libc++) - and 10x faster than ``sprintf`` on the `dtoa-benchmark - <https://github.com/fmtlib/dtoa-benchmark>`_ floating-point formatting - benchmark: + and 10x faster than ``sprintf`` on `dtoa-benchmark + <https://github.com/fmtlib/dtoa-benchmark>`_ (`full results + <https://fmt.dev/unknown_mac64_clang10.0.html>`_): .. image:: https://user-images.githubusercontent.com/576385/ 54883977-9fe8c000-4e28-11e9-8bde-272d122e7c52.jpg - `Full benchmark results <https://fmt.dev/unknown_mac64_clang10.0.html>`_ +* Separated formatting and parsing contexts for consistency with + `C++20 std::format <http://eel.is/c++draft/format>`_, removing the + undocumented ``basic_format_context::parse_context()`` function. + +* Added `oss-fuzz <https://github.com/google/oss-fuzz>`_ support + (`#1199 <https://github.com/fmtlib/fmt/pull/1199>`_). + Thanks `@pauldreik (Paul Dreik) <https://github.com/pauldreik>`_. * ``formatter`` specializations now always take precedence over ``operator<<`` (`#952 <https://github.com/fmtlib/fmt/issues/952>`_): @@ -72,30 +1349,33 @@ } * Introduced the experimental ``fmt::compile`` function that does format string - compilation (`#618 <https://github.com/fmtlib/fmt/issues/618>`_): + compilation (`#618 <https://github.com/fmtlib/fmt/issues/618>`_, + `#1169 <https://github.com/fmtlib/fmt/issues/1169>`_, + `#1171 <https://github.com/fmtlib/fmt/pull/1171>`_): .. code:: c++ #include <fmt/compile.h> auto f = fmt::compile<int>("{}"); - std::string s = fmt::format(f, 42); // can be called multiple times to format - // different values + std::string s = fmt::format(f, 42); // can be called multiple times to + // format different values // s == "42" It moves the cost of parsing a format string outside of the format function which can be beneficial when identically formatting many objects of the same types. Thanks `@stryku (Mateusz Janek) <https://github.com/stryku>`_. -* Added the ``%`` format specifier that formats floating-point values as - percentages (`#1060 <https://github.com/fmtlib/fmt/pull/1060>`_, +* Added experimental ``%`` format specifier that formats floating-point values + as percentages (`#1060 <https://github.com/fmtlib/fmt/pull/1060>`_, + `#1069 <https://github.com/fmtlib/fmt/pull/1069>`_, `#1071 <https://github.com/fmtlib/fmt/pull/1071>`_): .. code:: c++ auto s = fmt::format("{:.1%}", 0.42); // s == "42.0%" - Thanks `@gawain-bolton (Gawain Bolton) <https://github.com/gawain-bolton>`_: + Thanks `@gawain-bolton (Gawain Bolton) <https://github.com/gawain-bolton>`_. * Implemented precision for floating-point durations (`#1004 <https://github.com/fmtlib/fmt/issues/1004>`_, @@ -143,44 +1423,77 @@ Thanks `@Naios (Denis Blank) <https://github.com/Naios>`_. +* Removed the deprecated color API (``print_colored``). Use the new API, namely + ``print`` overloads that take ``text_style`` instead. + * Made ``std::unique_ptr`` and ``std::shared_ptr`` formattable as pointers via - ``fmt::ptr``: + ``fmt::ptr`` (`#1121 <https://github.com/fmtlib/fmt/pull/1121>`_): .. code:: c++ std::unique_ptr<int> p = ...; fmt::print("{}", fmt::ptr(p)); // prints p as a pointer + Thanks `@sighingnow (Tao He) <https://github.com/sighingnow>`_. + * Made ``print`` and ``vprint`` report I/O errors (`#1098 <https://github.com/fmtlib/fmt/issues/1098>`_, `#1099 <https://github.com/fmtlib/fmt/pull/1099>`_). Thanks `@BillyDonahue (Billy Donahue) <https://github.com/BillyDonahue>`_. -* Separated formatting and parsing contexts, removing the undocumented - ``basic_format_context::parse_context()`` function. - * Marked deprecated APIs with the ``[[deprecated]]`` attribute and removed internal uses of deprecated APIs (`#1022 <https://github.com/fmtlib/fmt/pull/1022>`_). Thanks `@eliaskosunen (Elias Kosunen) <https://github.com/eliaskosunen>`_. +* Modernized the codebase using more C++11 features and removing workarounds. + Most importantly, ``buffer_context`` is now an alias template, so + use ``buffer_context<T>`` instead of ``buffer_context<T>::type``. + These features require GCC 4.8 or later. + +* ``formatter`` specializations now always take precedence over implicit + conversions to ``int`` and the undocumented ``convert_to_int`` trait + is now deprecated. + * Moved the undocumented ``basic_writer``, ``writer``, and ``wwriter`` types to the ``internal`` namespace. +* Removed deprecated ``basic_format_context::begin()``. Use ``out()`` instead. + +* Disallowed passing the result of ``join`` as an lvalue to prevent misuse. + +* Refactored the undocumented structs that represent parsed format specifiers + to simplify the API and allow multibyte fill. + * Moved SFINAE to template parameters to reduce symbol sizes. +* Switched to ``fputws`` for writing wide strings so that it's no longer + required to call ``_setmode`` on Windows + (`#1229 <https://github.com/fmtlib/fmt/issues/1229>`_, + `#1243 <https://github.com/fmtlib/fmt/pull/1243>`_). + Thanks `@jackoalan (Jack Andersen) <https://github.com/jackoalan>`_. + +* Improved literal-based API + (`#1254 <https://github.com/fmtlib/fmt/pull/1254>`_). + Thanks `@sylveon (Charles Milette) <https://github.com/sylveon>`_. + * Added support for exotic platforms without ``uintptr_t`` such as IBM i - (AS/400) with 128-bit pointers and only 64-bit integers + (AS/400) which has 128-bit pointers and only 64-bit integers (`#1059 <https://github.com/fmtlib/fmt/issues/1059>`_). -* Stopped setting ``CMAKE_BUILD_TYPE`` if {fmt} is a subproject - (`#1081 <https://github.com/fmtlib/fmt/issues/1081>`_). - * Added `Sublime Text syntax highlighting config <https://github.com/fmtlib/fmt/blob/master/support/C%2B%2B.sublime-syntax>`_ (`#1037 <https://github.com/fmtlib/fmt/issues/1037>`_). Thanks `@Kronuz (Germán Méndez Bravo) <https://github.com/Kronuz>`_. +* Added the ``FMT_ENFORCE_COMPILE_STRING`` macro to enforce the use of + compile-time format strings + (`#1231 <https://github.com/fmtlib/fmt/pull/1231>`_). + Thanks `@jackoalan (Jack Andersen) <https://github.com/jackoalan>`_. + +* Stopped setting ``CMAKE_BUILD_TYPE`` if {fmt} is a subproject + (`#1081 <https://github.com/fmtlib/fmt/issues/1081>`_). + * Various build improvements (`#1039 <https://github.com/fmtlib/fmt/pull/1039>`_, `#1078 <https://github.com/fmtlib/fmt/pull/1078>`_, @@ -194,48 +1507,84 @@ `@pauldreik (Paul Dreik) <https://github.com/pauldreik>`_. * Improved documentation - (`#1051 <https://github.com/fmtlib/fmt/pull/1051>`_, - `#1113 <https://github.com/fmtlib/fmt/pull/1113>`_ - `#1114 <https://github.com/fmtlib/fmt/pull/1114>`_). + (`#1049 <https://github.com/fmtlib/fmt/issues/1049>`_, + `#1051 <https://github.com/fmtlib/fmt/pull/1051>`_, + `#1083 <https://github.com/fmtlib/fmt/pull/1083>`_, + `#1113 <https://github.com/fmtlib/fmt/pull/1113>`_, + `#1114 <https://github.com/fmtlib/fmt/pull/1114>`_, + `#1146 <https://github.com/fmtlib/fmt/issues/1146>`_, + `#1180 <https://github.com/fmtlib/fmt/issues/1180>`_, + `#1250 <https://github.com/fmtlib/fmt/pull/1250>`_, + `#1252 <https://github.com/fmtlib/fmt/pull/1252>`_, + `#1265 <https://github.com/fmtlib/fmt/pull/1265>`_). Thanks `@mikelui (Michael Lui) <https://github.com/mikelui>`_, - `@BillyDonahue (Billy Donahue) <https://github.com/BillyDonahue>`_. + `@foonathan (Jonathan Müller) <https://github.com/foonathan>`_, + `@BillyDonahue (Billy Donahue) <https://github.com/BillyDonahue>`_, + `@jwakely (Jonathan Wakely) <https://github.com/jwakely>`_, + `@kaisbe (Kais Ben Salah) <https://github.com/kaisbe>`_, + `@sdebionne (Samuel Debionne) <https://github.com/sdebionne>`_. * Fixed ambiguous formatter specialization in ``fmt/ranges.h`` (`#1123 <https://github.com/fmtlib/fmt/issues/1123>`_). +* Fixed formatting of a non-empty ``std::filesystem::path`` which is an + infinitely deep range of its components + (`#1268 <https://github.com/fmtlib/fmt/issues/1268>`_). + * Fixed handling of general output iterators when formatting characters (`#1056 <https://github.com/fmtlib/fmt/issues/1056>`_, `#1058 <https://github.com/fmtlib/fmt/pull/1058>`_). Thanks `@abolz (Alexander Bolz) <https://github.com/abolz>`_. +* Fixed handling of output iterators in ``formatter`` specialization for + ranges (`#1064 <https://github.com/fmtlib/fmt/issues/1064>`_). + +* Fixed handling of exotic character types + (`#1188 <https://github.com/fmtlib/fmt/issues/1188>`_). + * Made chrono formatting work with exceptions disabled (`#1062 <https://github.com/fmtlib/fmt/issues/1062>`_). * Fixed DLL visibility issues - (`#1135 <https://github.com/fmtlib/fmt/pull/1135>`_, - `#1147 <https://github.com/fmtlib/fmt/pull/1147>`_) + (`#1134 <https://github.com/fmtlib/fmt/pull/1134>`_, + `#1147 <https://github.com/fmtlib/fmt/pull/1147>`_). Thanks `@denchat <https://github.com/denchat>`_. * Disabled the use of UDL template extension on GCC 9 (`#1148 <https://github.com/fmtlib/fmt/issues/1148>`_). -* Removed ``format`` compile-time checks from ``printf`` +* Removed misplaced ``format`` compile-time checks from ``printf`` (`#1173 <https://github.com/fmtlib/fmt/issues/1173>`_). * Fixed issues in the experimental floating-point formatter (`#1072 <https://github.com/fmtlib/fmt/issues/1072>`_, + `#1129 <https://github.com/fmtlib/fmt/issues/1129>`_, `#1153 <https://github.com/fmtlib/fmt/issues/1153>`_, - `#1155 <https://github.com/fmtlib/fmt/pull/1155>`_) + `#1155 <https://github.com/fmtlib/fmt/pull/1155>`_, + `#1210 <https://github.com/fmtlib/fmt/issues/1210>`_, + `#1222 <https://github.com/fmtlib/fmt/issues/1222>`_). Thanks `@alabuzhev (Alex Alabuzhev) <https://github.com/alabuzhev>`_. -* Fixed crashes discovered by fuzzing in the experimental floating-point - formatter and the chrono formatter - (`#1127 <https://github.com/fmtlib/fmt/issues/1127>`_, - `#1132 <https://github.com/fmtlib/fmt/issues/1132>`_). +* Fixed bugs discovered by fuzzing or during fuzzing integration + (`#1124 <https://github.com/fmtlib/fmt/issues/1124>`_, + `#1127 <https://github.com/fmtlib/fmt/issues/1127>`_, + `#1132 <https://github.com/fmtlib/fmt/issues/1132>`_, + `#1135 <https://github.com/fmtlib/fmt/pull/1135>`_, + `#1136 <https://github.com/fmtlib/fmt/issues/1136>`_, + `#1141 <https://github.com/fmtlib/fmt/issues/1141>`_, + `#1142 <https://github.com/fmtlib/fmt/issues/1142>`_, + `#1178 <https://github.com/fmtlib/fmt/issues/1178>`_, + `#1179 <https://github.com/fmtlib/fmt/issues/1179>`_, + `#1194 <https://github.com/fmtlib/fmt/issues/1194>`_). Thanks `@pauldreik (Paul Dreik) <https://github.com/pauldreik>`_. -* Fixed various warnings and compile issues - (`#1006 <https://github.com/fmtlib/fmt/pull/1006>`_, +* Fixed building tests on FreeBSD and Hurd + (`#1043 <https://github.com/fmtlib/fmt/issues/1043>`_). + Thanks `@jackyf (Eugene V. Lyubimkin) <https://github.com/jackyf>`_. + +* Fixed various warnings and compilation issues + (`#998 <https://github.com/fmtlib/fmt/pull/998>`_, + `#1006 <https://github.com/fmtlib/fmt/pull/1006>`_, `#1008 <https://github.com/fmtlib/fmt/issues/1008>`_, `#1011 <https://github.com/fmtlib/fmt/issues/1011>`_, `#1025 <https://github.com/fmtlib/fmt/issues/1025>`_, @@ -249,24 +1598,49 @@ `#1068 <https://github.com/fmtlib/fmt/pull/1068>`_, `#1074 <https://github.com/fmtlib/fmt/pull/1074>`_, `#1075 <https://github.com/fmtlib/fmt/pull/1075>`_, + `#1079 <https://github.com/fmtlib/fmt/pull/1079>`_, `#1086 <https://github.com/fmtlib/fmt/pull/1086>`_, `#1088 <https://github.com/fmtlib/fmt/issues/1088>`_, `#1089 <https://github.com/fmtlib/fmt/pull/1089>`_, + `#1094 <https://github.com/fmtlib/fmt/pull/1094>`_, + `#1101 <https://github.com/fmtlib/fmt/issues/1101>`_, `#1102 <https://github.com/fmtlib/fmt/pull/1102>`_, `#1105 <https://github.com/fmtlib/fmt/issues/1105>`_, `#1107 <https://github.com/fmtlib/fmt/pull/1107>`_, `#1115 <https://github.com/fmtlib/fmt/issues/1115>`_, `#1117 <https://github.com/fmtlib/fmt/issues/1117>`_, + `#1118 <https://github.com/fmtlib/fmt/issues/1118>`_, `#1120 <https://github.com/fmtlib/fmt/issues/1120>`_, - `#1134 <https://github.com/fmtlib/fmt/pull/1134>`_, + `#1123 <https://github.com/fmtlib/fmt/issues/1123>`_, `#1139 <https://github.com/fmtlib/fmt/pull/1139>`_, + `#1140 <https://github.com/fmtlib/fmt/issues/1140>`_, + `#1143 <https://github.com/fmtlib/fmt/issues/1143>`_, `#1144 <https://github.com/fmtlib/fmt/pull/1144>`_, `#1150 <https://github.com/fmtlib/fmt/pull/1150>`_, `#1151 <https://github.com/fmtlib/fmt/pull/1151>`_, `#1152 <https://github.com/fmtlib/fmt/issues/1152>`_, `#1154 <https://github.com/fmtlib/fmt/issues/1154>`_, - `#1156 <https://github.com/fmtlib/fmt/issues/1156>`_ - `#1159 <https://github.com/fmtlib/fmt/pull/1159>`_,). + `#1156 <https://github.com/fmtlib/fmt/issues/1156>`_, + `#1159 <https://github.com/fmtlib/fmt/pull/1159>`_, + `#1175 <https://github.com/fmtlib/fmt/issues/1175>`_, + `#1181 <https://github.com/fmtlib/fmt/issues/1181>`_, + `#1186 <https://github.com/fmtlib/fmt/issues/1186>`_, + `#1187 <https://github.com/fmtlib/fmt/pull/1187>`_, + `#1191 <https://github.com/fmtlib/fmt/pull/1191>`_, + `#1197 <https://github.com/fmtlib/fmt/issues/1197>`_, + `#1200 <https://github.com/fmtlib/fmt/issues/1200>`_, + `#1203 <https://github.com/fmtlib/fmt/issues/1203>`_, + `#1205 <https://github.com/fmtlib/fmt/issues/1205>`_, + `#1206 <https://github.com/fmtlib/fmt/pull/1206>`_, + `#1213 <https://github.com/fmtlib/fmt/issues/1213>`_, + `#1214 <https://github.com/fmtlib/fmt/issues/1214>`_, + `#1217 <https://github.com/fmtlib/fmt/pull/1217>`_, + `#1228 <https://github.com/fmtlib/fmt/issues/1228>`_, + `#1230 <https://github.com/fmtlib/fmt/pull/1230>`_, + `#1232 <https://github.com/fmtlib/fmt/issues/1232>`_, + `#1235 <https://github.com/fmtlib/fmt/pull/1235>`_, + `#1236 <https://github.com/fmtlib/fmt/pull/1236>`_, + `#1240 <https://github.com/fmtlib/fmt/issues/1240>`_). Thanks `@DanielaE (Daniela Engert) <https://github.com/DanielaE>`_, `@mwinterb <https://github.com/mwinterb>`_, `@eliaskosunen (Elias Kosunen) <https://github.com/eliaskosunen>`_, @@ -279,7 +1653,13 @@ `@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_, `@rcane (Ronny Krüger) <https://github.com/rcane>`_, `@mocabe <https://github.com/mocabe>`_, - `@denchat <https://github.com/denchat>`_. + `@denchat <https://github.com/denchat>`_, + `@cjdb (Christopher Di Bella) <https://github.com/cjdb>`_, + `@HazardyKnusperkeks (Björn Schäpers) <https://github.com/HazardyKnusperkeks>`_, + `@vedranmiletic (Vedran Miletić) <https://github.com/vedranmiletic>`_, + `@jackoalan (Jack Andersen) <https://github.com/jackoalan>`_, + `@DaanDeMeyer (Daan De Meyer) <https://github.com/DaanDeMeyer>`_, + `@starkmapper (Mark Stapper) <https://github.com/starkmapper>`_. 5.3.0 - 2018-12-28 ------------------ @@ -669,7 +2049,7 @@ ``color`` enum) is now deprecated. (`#762 <https://github.com/fmtlib/fmt/issues/762>`_ `#767 <https://github.com/fmtlib/fmt/pull/767>`_). - thanks `@remotion (remo) <https://github.com/remotion>`_. + thanks `@Remotion (Remo) <https://github.com/Remotion>`_. * Added quotes to strings in ranges and tuples (`#766 <https://github.com/fmtlib/fmt/pull/766>`_). @@ -750,7 +2130,7 @@ * Implemented ``constexpr`` parsing of format strings and `compile-time format string checks - <https://fmt.dev/dev/api.html#compile-time-format-string-checks>`_. For + <https://fmt.dev/latest/api.html#compile-time-format-string-checks>`_. For example .. code:: c++ @@ -811,7 +2191,7 @@ throw format_error("invalid specifier"); * Added `iterator support - <https://fmt.dev/dev/api.html#output-iterator-support>`_: + <https://fmt.dev/latest/api.html#output-iterator-support>`_: .. code:: c++ @@ -822,7 +2202,7 @@ fmt::format_to(std::back_inserter(out), "{}", 42); * Added the `format_to_n - <https://fmt.dev/dev/api.html#_CPPv2N3fmt11format_to_nE8OutputItNSt6size_tE11string_viewDpRK4Args>`_ + <https://fmt.dev/latest/api.html#_CPPv2N3fmt11format_to_nE8OutputItNSt6size_tE11string_viewDpRK4Args>`_ function that restricts the output to the specified number of characters (`#298 <https://github.com/fmtlib/fmt/issues/298>`_): @@ -833,7 +2213,7 @@ // out == "1234" (without terminating '\0') * Added the `formatted_size - <https://fmt.dev/dev/api.html#_CPPv2N3fmt14formatted_sizeE11string_viewDpRK4Args>`_ + <https://fmt.dev/latest/api.html#_CPPv2N3fmt14formatted_sizeE11string_viewDpRK4Args>`_ function for computing the output size: .. code:: c++ @@ -843,7 +2223,7 @@ auto size = fmt::formatted_size("{}", 12345); // size == 5 * Improved compile times by reducing dependencies on standard headers and - providing a lightweight `core API <https://fmt.dev/dev/api.html#core-api>`_: + providing a lightweight `core API <https://fmt.dev/latest/api.html#core-api>`_: .. code:: c++ @@ -855,7 +2235,7 @@ <https://github.com/fmtlib/fmt#compile-time-and-code-bloat>`_. * Added the `make_format_args - <https://fmt.dev/dev/api.html#_CPPv2N3fmt16make_format_argsEDpRK4Args>`_ + <https://fmt.dev/latest/api.html#_CPPv2N3fmt16make_format_argsEDpRK4Args>`_ function for capturing formatting arguments: .. code:: c++ @@ -937,7 +2317,7 @@ fmt::format("{} {two}", 1, fmt::arg("two", 2)); * Removed the write API in favor of the `format API - <https://fmt.dev/dev/api.html#format-api>`_ with compile-time handling of + <https://fmt.dev/latest/api.html#format-api>`_ with compile-time handling of format strings. * Disallowed formatting of multibyte strings into a wide character target diff --git a/deps/fmt/LICENSE.rst b/deps/fmt/LICENSE.rst index 6061de720b..f0ec3db4d2 100644 --- a/deps/fmt/LICENSE.rst +++ b/deps/fmt/LICENSE.rst @@ -1,23 +1,27 @@ Copyright (c) 2012 - present, Victor Zverovich -All rights reserved. +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. -1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. -2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND -ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR -ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +--- Optional exception to the license --- + +As an exception, if, as a result of your compiling your source code, portions +of this Software are embedded into a machine-executable object form of such +source code, you may redistribute such embedded portions in such object form +without including the above copyright and permission notices. diff --git a/deps/fmt/README.rst b/deps/fmt/README.rst index f08b22faef..7cf794e4ac 100644 --- a/deps/fmt/README.rst +++ b/deps/fmt/README.rst @@ -1,157 +1,186 @@ {fmt} ===== -.. image:: https://travis-ci.org/fmtlib/fmt.png?branch=master - :target: https://travis-ci.org/fmtlib/fmt +.. image:: https://github.com/fmtlib/fmt/workflows/linux/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Alinux + +.. image:: https://github.com/fmtlib/fmt/workflows/macos/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Amacos + +.. image:: https://github.com/fmtlib/fmt/workflows/windows/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Awindows .. image:: https://ci.appveyor.com/api/projects/status/ehjkiefde6gucy1v :target: https://ci.appveyor.com/project/vitaut/fmt +.. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/fmt.svg + :alt: fmt is continuously fuzzed at oss-fuzz + :target: https://bugs.chromium.org/p/oss-fuzz/issues/list?\ + colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20\ + Summary&q=proj%3Dfmt&can=1 + .. image:: https://img.shields.io/badge/stackoverflow-fmt-blue.svg :alt: Ask questions at StackOverflow with the tag fmt - :target: http://stackoverflow.com/questions/tagged/fmt + :target: https://stackoverflow.com/questions/tagged/fmt + +**{fmt}** is an open-source formatting library providing a fast and safe +alternative to C stdio and C++ iostreams. + +If you like this project, please consider donating to BY_Help, +an initiative to help victims of political repressions in Belarus: +https://www.facebook.com/donate/199475051809330/. -**{fmt}** is an open-source formatting library for C++. -It can be used as a safe and fast alternative to (s)printf and iostreams. +`Documentation <https://fmt.dev>`__ -`Documentation <https://fmt.dev/latest/>`__ +Q&A: ask questions on `StackOverflow with the tag fmt +<https://stackoverflow.com/questions/tagged/fmt>`_. -Q&A: ask questions on `StackOverflow with the tag fmt <http://stackoverflow.com/questions/tagged/fmt>`_. +Try {fmt} in `Compiler Explorer <https://godbolt.org/z/Eq5763>`_. Features -------- -* Replacement-based `format API <https://fmt.dev/dev/api.html>`_ with - positional arguments for localization. -* `Format string syntax <https://fmt.dev/dev/syntax.html>`_ similar to the one - of `str.format <https://docs.python.org/2/library/stdtypes.html#str.format>`_ - in Python. +* Simple `format API <https://fmt.dev/latest/api.html>`_ with positional arguments + for localization +* Implementation of `C++20 std::format + <https://en.cppreference.com/w/cpp/utility/format>`__ +* `Format string syntax <https://fmt.dev/latest/syntax.html>`_ similar to Python's + `format <https://docs.python.org/3/library/stdtypes.html#str.format>`_ +* Fast IEEE 754 floating-point formatter with correct rounding, shortness and + round-trip guarantees * Safe `printf implementation - <https://fmt.dev/latest/api.html#printf-formatting>`_ including - the POSIX extension for positional arguments. -* Implementation of `C++20 std::format <https://fmt.dev/Text%20Formatting.html>`__. -* Support for user-defined types. + <https://fmt.dev/latest/api.html#printf-formatting>`_ including the POSIX + extension for positional arguments +* Extensibility: `support for user-defined types + <https://fmt.dev/latest/api.html#formatting-user-defined-types>`_ * High performance: faster than common standard library implementations of - `printf <http://en.cppreference.com/w/cpp/io/c/fprintf>`_ and - iostreams. See `Speed tests`_ and `Fast integer to string conversion in C++ - <http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_. -* Small code size both in terms of source code (the minimum configuration - consists of just three header files, ``core.h``, ``format.h`` and - ``format-inl.h``) and compiled code. See `Compile time and code bloat`_. -* Reliability: the library has an extensive set of `unit tests - <https://github.com/fmtlib/fmt/tree/master/test>`_. + ``(s)printf``, iostreams, ``to_string`` and ``to_chars``, see `Speed tests`_ + and `Converting a hundred million integers to strings per second + <http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_ +* Small code size both in terms of source code with the minimum configuration + consisting of just three files, ``core.h``, ``format.h`` and ``format-inl.h``, + and compiled code; see `Compile time and code bloat`_ +* Reliability: the library has an extensive set of `tests + <https://github.com/fmtlib/fmt/tree/master/test>`_ and is `continuously fuzzed + <https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20 + Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dfmt&can=1>`_ * Safety: the library is fully type safe, errors in format strings can be reported at compile time, automatic memory management prevents buffer overflow - errors. + errors * Ease of use: small self-contained code base, no external dependencies, - permissive BSD `license + permissive MIT `license <https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_ * `Portability <https://fmt.dev/latest/index.html#portability>`_ with - consistent output across platforms and support for older compilers. -* Clean warning-free codebase even on high warning levels - (``-Wall -Wextra -pedantic``). -* Support for wide strings. -* Optional header-only configuration enabled with the ``FMT_HEADER_ONLY`` macro. + consistent output across platforms and support for older compilers +* Clean warning-free codebase even on high warning levels such as + ``-Wall -Wextra -pedantic`` +* Locale-independence by default +* Optional header-only configuration enabled with the ``FMT_HEADER_ONLY`` macro -See the `documentation <https://fmt.dev/latest/>`_ for more details. +See the `documentation <https://fmt.dev>`_ for more details. Examples -------- -Print ``Hello, world!`` to ``stdout``: +**Print to stdout** (`run <https://godbolt.org/z/Tevcjh>`_) .. code:: c++ - fmt::print("Hello, {}!", "world"); // Python-like format string syntax - fmt::printf("Hello, %s!", "world"); // printf format string syntax + #include <fmt/core.h> + + int main() { + fmt::print("Hello, world!\n"); + } -Format a string and use positional arguments: +**Format a string** (`run <https://godbolt.org/z/oK8h33>`_) + +.. code:: c++ + + std::string s = fmt::format("The answer is {}.", 42); + // s == "The answer is 42." + +**Format a string using positional arguments** (`run <https://godbolt.org/z/Yn7Txe>`_) .. code:: c++ std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy"); // s == "I'd rather be happy than right." -Check a format string at compile time: +**Print chrono durations** (`run <https://godbolt.org/z/K8s4Mc>`_) .. code:: c++ - // test.cc - #define FMT_STRING_ALIAS 1 - #include <fmt/format.h> - std::string s = format(fmt("{2}"), 42); + #include <fmt/chrono.h> + + int main() { + using namespace std::literals::chrono_literals; + fmt::print("Default format: {} {}\n", 42s, 100ms); + fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s); + } -.. code:: +Output:: - $ c++ -Iinclude -std=c++14 test.cc - ... - test.cc:4:17: note: in instantiation of function template specialization 'fmt::v5::format<S, int>' requested here - std::string s = format(fmt("{2}"), 42); - ^ - include/fmt/core.h:778:19: note: non-constexpr function 'on_error' cannot be used in a constant expression - ErrorHandler::on_error(message); - ^ - include/fmt/format.h:2226:16: note: in call to '&checker.context_->on_error(&"argument index out of range"[0])' - context_.on_error("argument index out of range"); - ^ + Default format: 42s 100ms + strftime-like format: 03:15:30 -Use {fmt} as a safe portable replacement for ``itoa`` -(`godbolt <https://godbolt.org/g/NXmpU4>`_): +**Print a container** (`run <https://godbolt.org/z/MjsY7c>`_) .. code:: c++ - fmt::memory_buffer buf; - format_to(buf, "{}", 42); // replaces itoa(42, buffer, 10) - format_to(buf, "{:x}", 42); // replaces itoa(42, buffer, 16) - // access the string with to_string(buf) or buf.data() + #include <vector> + #include <fmt/ranges.h> -Format objects of user-defined types via a simple `extension API -<https://fmt.dev/latest/api.html#formatting-user-defined-types>`_: + int main() { + std::vector<int> v = {1, 2, 3}; + fmt::print("{}\n", v); + } -.. code:: c++ +Output:: - #include "fmt/format.h" + [1, 2, 3] - struct date { - int year, month, day; - }; +**Check a format string at compile time** - template <> - struct fmt::formatter<date> { - template <typename ParseContext> - constexpr auto parse(ParseContext &ctx) { return ctx.begin(); } +.. code:: c++ - template <typename FormatContext> - auto format(const date &d, FormatContext &ctx) { - return format_to(ctx.out(), "{}-{}-{}", d.year, d.month, d.day); - } - }; + std::string s = fmt::format(FMT_STRING("{:d}"), "I am not a number"); - std::string s = fmt::format("The date is {}", date{2012, 12, 9}); - // s == "The date is 2012-12-9" +This gives a compile-time error because ``d`` is an invalid format specifier for +a string. -Create your own functions similar to `format -<https://fmt.dev/latest/api.html#format>`_ and -`print <https://fmt.dev/latest/api.html#print>`_ -which take arbitrary arguments (`godbolt <https://godbolt.org/g/MHjHVf>`_): +**Write a file from a single thread** .. code:: c++ - // Prints formatted error message. - void vreport_error(const char *format, fmt::format_args args) { - fmt::print("Error: "); - fmt::vprint(format, args); + #include <fmt/os.h> + + int main() { + auto out = fmt::output_file("guide.txt"); + out.print("Don't {}", "Panic"); } - template <typename... Args> - void report_error(const char *format, const Args & ... args) { - vreport_error(format, fmt::make_format_args(args...)); + +This can be `5 to 9 times faster than fprintf +<http://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html>`_. + +**Print with colors and text styles** + +.. code:: c++ + + #include <fmt/color.h> + + int main() { + fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold, + "Hello, {}!\n", "world"); + fmt::print(fg(fmt::color::floral_white) | bg(fmt::color::slate_gray) | + fmt::emphasis::underline, "Hello, {}!\n", "мир"); + fmt::print(fg(fmt::color::steel_blue) | fmt::emphasis::italic, + "Hello, {}!\n", "世界"); } - report_error("file not found: {}", path); +Output on a modern terminal: -Note that ``vreport_error`` is not parameterized on argument types which can -improve compile times and reduce code size compared to a fully parameterized -version. +.. image:: https://user-images.githubusercontent.com/ + 576385/88485597-d312f600-cf2b-11ea-9cbe-61f535a86e28.png Benchmarks ---------- @@ -162,29 +191,30 @@ Speed tests ================= ============= =========== Library Method Run Time, s ================= ============= =========== -libc printf 1.01 -libc++ std::ostream 3.04 -{fmt} 1632f72 fmt::print 0.86 -tinyformat 2.0.1 tfm::printf 3.23 -Boost Format 1.67 boost::format 7.98 +libc printf 1.04 +libc++ std::ostream 3.05 +{fmt} 6.1.1 fmt::print 0.75 +Boost Format 1.67 boost::format 7.24 Folly Format folly::format 2.23 ================= ============= =========== -{fmt} is the fastest of the benchmarked methods, ~17% faster than ``printf``. +{fmt} is the fastest of the benchmarked methods, ~35% faster than ``printf``. The above results were generated by building ``tinyformat_test.cpp`` on macOS -10.14.3 with ``clang++ -O3 -DSPEED_TEST -DHAVE_FORMAT``, and taking the best of -three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"`` +10.14.6 with ``clang++ -O3 -DNDEBUG -DSPEED_TEST -DHAVE_FORMAT``, and taking the +best of three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"`` or equivalent is filled 2,000,000 times with output sent to ``/dev/null``; for further details refer to the `source <https://github.com/fmtlib/format-benchmark/blob/master/tinyformat_test.cpp>`_. -{fmt} is 10x faster than ``std::ostringstream`` and ``sprintf`` on floating-point -formatting (`dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_) -and as fast as `double-conversion <https://github.com/google/double-conversion>`_: +{fmt} is up to 20-30x faster than ``std::ostringstream`` and ``sprintf`` on +floating-point formatting (`dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_) +and faster than `double-conversion <https://github.com/google/double-conversion>`_ and +`ryu <https://github.com/ulfjack/ryu>`_: -.. image:: https://user-images.githubusercontent.com/576385/54883977-9fe8c000-4e28-11e9-8bde-272d122e7c52.jpg - :target: https://fmt.dev/unknown_mac64_clang10.0.html +.. image:: https://user-images.githubusercontent.com/576385/ + 95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png + :target: https://fmt.dev/unknown_mac64_clang12.0.html Compile time and code bloat ~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -207,7 +237,6 @@ printf 2.6 29 26 printf+string 16.4 29 26 iostreams 31.1 59 55 {fmt} 19.0 37 34 -tinyformat 44.0 103 97 Boost Format 91.9 226 203 Folly Format 115.7 101 88 ============= =============== ==================== ================== @@ -228,14 +257,13 @@ printf 2.2 33 30 printf+string 16.0 33 30 iostreams 28.3 56 52 {fmt} 18.2 59 50 -tinyformat 32.6 88 82 Boost Format 54.1 365 303 Folly Format 79.9 445 430 ============= =============== ==================== ================== ``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared libraries to -compare formatting function overhead only. Boost Format and tinyformat are -header-only libraries so they don't provide any linkage options. +compare formatting function overhead only. Boost Format is a +header-only library so it doesn't provide any linkage options. Running the tests ~~~~~~~~~~~~~~~~~ @@ -261,38 +289,46 @@ Then you can run the speed test:: or the bloat test:: $ make bloat-test + +Migrating code +-------------- + +`clang-tidy-fmt <https://github.com/mikecrowe/clang-tidy-fmt>`_ provides clang +tidy checks for converting occurrences of ``printf`` and ``fprintf`` to +``fmt::print``. Projects using this library --------------------------- -* `0 A.D. <http://play0ad.com/>`_: A free, open-source, cross-platform real-time - strategy game +* `0 A.D. <https://play0ad.com/>`_: a free, open-source, cross-platform + real-time strategy game -* `AMPL/MP <https://github.com/ampl/mp>`_: - An open-source library for mathematical programming - -* `AvioBook <https://www.aviobook.aero/en>`_: A comprehensive aircraft - operations suite - -* `Celestia <https://celestia.space/>`_: Real-time 3D visualization of space +* `2GIS <https://2gis.ru/>`_: free business listings with a city map -* `Ceph <https://ceph.com/>`_: A scalable distributed storage system +* `AMPL/MP <https://github.com/ampl/mp>`_: + an open-source library for mathematical programming -* `CUAUV <http://cuauv.org/>`_: Cornell University's autonomous underwater - vehicle +* `Aseprite <https://github.com/aseprite/aseprite>`_: + animated sprite editor & pixel art tool -* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_: - Player vs Player Gaming Network with tweaks +* `AvioBook <https://www.aviobook.aero/en>`_: a comprehensive aircraft + operations suite + +* `Blizzard Battle.net <https://battle.net/>`_: an online gaming platform + +* `Celestia <https://celestia.space/>`_: real-time 3D visualization of space -* `KBEngine <http://kbengine.org/>`_: An open-source MMOG server engine +* `Ceph <https://ceph.com/>`_: a scalable distributed storage system -* `Keypirinha <http://keypirinha.com/>`_: A semantic launcher for Windows +* `ccache <https://ccache.dev/>`_: a compiler cache -* `Kodi <https://kodi.tv/>`_ (formerly xbmc): Home theater software +* `ClickHouse <https://github.com/ClickHouse/ClickHouse>`_: analytical database + management system -* `Lifeline <https://github.com/peter-clark/lifeline>`_: A 2D game +* `CUAUV <https://cuauv.org/>`_: Cornell University's autonomous underwater + vehicle -* `Drake <http://drake.mit.edu/>`_: A planning, control, and analysis toolbox +* `Drake <https://drake.mit.edu/>`_: a planning, control, and analysis toolbox for nonlinear dynamical systems (MIT) * `Envoy <https://lyft.github.io/envoy/>`_: C++ L7 proxy and communication bus @@ -300,50 +336,80 @@ Projects using this library * `FiveM <https://fivem.net/>`_: a modification framework for GTA V -* `MongoDB <https://mongodb.com/>`_: Distributed document database +* `fmtlog <https://github.com/MengRao/fmtlog>`_: a performant fmtlib-style + logging library with latency in nanoseconds + +* `Folly <https://github.com/facebook/folly>`_: Facebook open-source library + +* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_: + Player vs Player Gaming Network with tweaks + +* `KBEngine <https://github.com/kbengine/kbengine>`_: an open-source MMOG server + engine + +* `Keypirinha <https://keypirinha.com/>`_: a semantic launcher for Windows -* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: A small tool to +* `Kodi <https://kodi.tv/>`_ (formerly xbmc): home theater software + +* `Knuth <https://kth.cash/>`_: high-performance Bitcoin full-node + +* `Microsoft Verona <https://github.com/microsoft/verona>`_: + research programming language for concurrent ownership + +* `MongoDB <https://mongodb.com/>`_: distributed document database + +* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: a small tool to generate randomized datasets -* `OpenSpace <http://openspaceproject.com/>`_: An open-source astrovisualization - framework +* `OpenSpace <https://openspaceproject.com/>`_: an open-source + astrovisualization framework -* `PenUltima Online (POL) <http://www.polserver.com/>`_: - An MMO server, compatible with most Ultima Online clients +* `PenUltima Online (POL) <https://www.polserver.com/>`_: + an MMO server, compatible with most Ultima Online clients -* `quasardb <https://www.quasardb.net/>`_: A distributed, high-performance, +* `PyTorch <https://github.com/pytorch/pytorch>`_: an open-source machine + learning library + +* `quasardb <https://www.quasardb.net/>`_: a distributed, high-performance, associative database + +* `Quill <https://github.com/odygrd/quill>`_: asynchronous low-latency logging library -* `readpe <https://bitbucket.org/sys_dev/readpe>`_: Read Portable Executable +* `QKW <https://github.com/ravijanjam/qkw>`_: generalizing aliasing to simplify + navigation, and executing complex multi-line terminal command sequences -* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: A Redis cluster +* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: a Redis cluster proxy -* `rpclib <http://rpclib.net/>`_: A modern C++ msgpack-RPC server and client - library +* `redpanda <https://vectorized.io/redpanda>`_: a 10x faster Kafka® replacement + for mission critical systems written in C++ -* `Saddy <https://github.com/mamontov-cpp/saddy-graphics-engine-2d>`_: - Small crossplatform 2D graphic engine +* `rpclib <http://rpclib.net/>`_: a modern C++ msgpack-RPC server and client + library -* `Salesforce Analytics Cloud <http://www.salesforce.com/analytics-cloud/overview/>`_: - Business intelligence software +* `Salesforce Analytics Cloud + <https://www.salesforce.com/analytics-cloud/overview/>`_: + business intelligence software -* `Scylla <http://www.scylladb.com/>`_: A Cassandra-compatible NoSQL data store +* `Scylla <https://www.scylladb.com/>`_: a Cassandra-compatible NoSQL data store that can handle 1 million transactions per second on a single server -* `Seastar <http://www.seastar-project.org/>`_: An advanced, open-source C++ +* `Seastar <http://www.seastar-project.org/>`_: an advanced, open-source C++ framework for high-performance server applications on modern hardware -* `spdlog <https://github.com/gabime/spdlog>`_: Super fast C++ logging library +* `spdlog <https://github.com/gabime/spdlog>`_: super fast C++ logging library -* `Stellar <https://www.stellar.org/>`_: Financial platform +* `Stellar <https://www.stellar.org/>`_: financial platform -* `Touch Surgery <https://www.touchsurgery.com/>`_: Surgery simulator +* `Touch Surgery <https://www.touchsurgery.com/>`_: surgery simulator -* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: Open-source +* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: open-source MMORPG framework -`More... <https://github.com/search?q=cppformat&type=Code>`_ +* `Windows Terminal <https://github.com/microsoft/terminal>`_: the new Windows + terminal + +`More... <https://github.com/search?q=fmtlib&type=Code>`_ If you are aware of other projects using this library, please let me know by `email <mailto:victor.zverovich@gmail.com>`_ or by submitting an @@ -367,7 +433,7 @@ The good thing about ``printf`` is that it is pretty fast and readily available being a part of the C standard library. The main drawback is that it doesn't support user-defined types. ``printf`` also has safety issues although they are somewhat mitigated with `__attribute__ ((format (printf, ...)) -<http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC. +<https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC. There is a POSIX extension that adds positional arguments required for `i18n <https://en.wikipedia.org/wiki/Internationalization_and_localization>`_ to ``printf`` but it is not a part of C99 and may not be available on some @@ -399,15 +465,15 @@ Boost Format This is a very powerful library which supports both ``printf``-like format strings and positional arguments. Its main drawback is performance. According to -various benchmarks it is much slower than other methods considered here. Boost +various, benchmarks it is much slower than other methods considered here. Boost Format also has excessive build times and severe code bloat issues (see `Benchmarks`_). FastFormat ~~~~~~~~~~ -This is an interesting library which is fast, safe and has positional -arguments. However it has significant limitations, citing its author: +This is an interesting library which is fast, safe and has positional arguments. +However, it has significant limitations, citing its author: Three features that have no hope of being accommodated within the current design are: @@ -416,22 +482,8 @@ arguments. However it has significant limitations, citing its author: * Octal/hexadecimal encoding * Runtime width/alignment specification -It is also quite big and has a heavy dependency, STLSoft, which might be -too restrictive for using it in some projects. - -Loki SafeFormat -~~~~~~~~~~~~~~~ - -SafeFormat is a formatting library which uses ``printf``-like format strings and -is type safe. It doesn't support user-defined types or positional arguments and -makes unconventional use of ``operator()`` for passing format arguments. - -Tinyformat -~~~~~~~~~~ - -This library supports ``printf``-like format strings and is very small . -It doesn't support positional arguments and wrapping it in C++98 is somewhat -difficult. Tinyformat relies on iostreams which limits its performance. +It is also quite big and has a heavy dependency, STLSoft, which might be too +restrictive for using it in some projects. Boost Spirit.Karma ~~~~~~~~~~~~~~~~~~ @@ -439,51 +491,29 @@ Boost Spirit.Karma This is not really a formatting library but I decided to include it here for completeness. As iostreams, it suffers from the problem of mixing verbatim text with arguments. The library is pretty fast, but slower on integer formatting -than ``fmt::format_int`` on Karma's own benchmark, -see `Fast integer to string conversion in C++ -<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_. - -FAQ ---- - -Q: how can I capture formatting arguments and format them later? - -A: use ``std::tuple``: - -.. code:: c++ - - template <typename... Args> - auto capture(const Args&... args) { - return std::make_tuple(args...); - } - - auto print_message = [](const auto&... args) { - fmt::print(args...); - }; - - // Capture and store arguments: - auto args = capture("{} {}", 42, "foo"); - // Do formatting: - std::apply(print_message, args); +than ``fmt::format_to`` with format string compilation on Karma's own benchmark, +see `Converting a hundred million integers to strings per second +<http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_. License ------- -{fmt} is distributed under the BSD `license +{fmt} is distributed under the MIT `license <https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_. -The `Format String Syntax -<https://fmt.dev/latest/syntax.html>`_ +Documentation License +--------------------- + +The `Format String Syntax <https://fmt.dev/latest/syntax.html>`_ section in the documentation is based on the one from Python `string module -documentation <https://docs.python.org/3/library/string.html#module-string>`_ -adapted for the current library. For this reason the documentation is -distributed under the Python Software Foundation license available in -`doc/python-license.txt +documentation <https://docs.python.org/3/library/string.html#module-string>`_. +For this reason the documentation is distributed under the Python Software +Foundation license available in `doc/python-license.txt <https://raw.github.com/fmtlib/fmt/master/doc/python-license.txt>`_. -It only applies if you distribute the documentation of fmt. +It only applies if you distribute the documentation of {fmt}. -Acknowledgments ---------------- +Maintainers +----------- The {fmt} library is maintained by Victor Zverovich (`vitaut <https://github.com/vitaut>`_) and Jonathan Müller (`foonathan @@ -492,23 +522,3 @@ See `Contributors <https://github.com/fmtlib/fmt/graphs/contributors>`_ and `Releases <https://github.com/fmtlib/fmt/releases>`_ for some of the names. Let us know if your contribution is not listed or mentioned incorrectly and we'll make it right. - -The benchmark section of this readme file and the performance tests are taken -from the excellent `tinyformat <https://github.com/c42f/tinyformat>`_ library -written by Chris Foster. Boost Format library is acknowledged transitively -since it had some influence on tinyformat. -Some ideas used in the implementation are borrowed from `Loki -<http://loki-lib.sourceforge.net/>`_ SafeFormat and `Diagnostic API -<http://clang.llvm.org/doxygen/classclang_1_1Diagnostic.html>`_ in -`Clang <http://clang.llvm.org/>`_. -Format string syntax and the documentation are based on Python's `str.format -<http://docs.python.org/2/library/stdtypes.html#str.format>`_. -Thanks `Doug Turnbull <https://github.com/softwaredoug>`_ for his valuable -comments and contribution to the design of the type-safe API and -`Gregory Czajkowski <https://github.com/gcflymoto>`_ for implementing binary -formatting. Thanks `Ruslan Baratov <https://github.com/ruslo>`_ for comprehensive -`comparison of integer formatting algorithms <https://github.com/ruslo/int-dec-format-tests>`_ -and useful comments regarding performance, `Boris Kaul <https://github.com/localvoid>`_ for -`C++ counting digits benchmark <https://github.com/localvoid/cxx-benchmark-count-digits>`_. -Thanks to `CarterLi <https://github.com/CarterLi>`_ for contributing various -improvements to the code. diff --git a/deps/fmt/fmt/chrono.h b/deps/fmt/fmt/chrono.h deleted file mode 100644 index e2a47019b6..0000000000 --- a/deps/fmt/fmt/chrono.h +++ /dev/null @@ -1,829 +0,0 @@ -// Formatting library for C++ - chrono support -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_CHRONO_H_ -#define FMT_CHRONO_H_ - -#include "format.h" -#include "locale.h" - -#include <chrono> -#include <ctime> -#include <locale> -#include <sstream> - -// enable safe chrono durations, unless explicitly disabled -#ifndef FMT_SAFE_DURATION_CAST -# define FMT_SAFE_DURATION_CAST 1 -#endif - -#if FMT_SAFE_DURATION_CAST -# include "safe-duration-cast.h" -#endif - -FMT_BEGIN_NAMESPACE - -// Prevents expansion of a preceding token as a function-style macro. -// Usage: f FMT_NOMACRO() -#define FMT_NOMACRO - -namespace internal { -inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); } -inline null<> localtime_s(...) { return null<>(); } -inline null<> gmtime_r(...) { return null<>(); } -inline null<> gmtime_s(...) { return null<>(); } -} // namespace internal - -// Thread-safe replacement for std::localtime -inline std::tm localtime(std::time_t time) { - struct dispatcher { - std::time_t time_; - std::tm tm_; - - dispatcher(std::time_t t) : time_(t) {} - - bool run() { - using namespace fmt::internal; - return handle(localtime_r(&time_, &tm_)); - } - - bool handle(std::tm* tm) { return tm != nullptr; } - - bool handle(internal::null<>) { - using namespace fmt::internal; - return fallback(localtime_s(&tm_, &time_)); - } - - bool fallback(int res) { return res == 0; } - -#if !FMT_MSC_VER - bool fallback(internal::null<>) { - using namespace fmt::internal; - std::tm* tm = std::localtime(&time_); - if (tm) tm_ = *tm; - return tm != nullptr; - } -#endif - }; - dispatcher lt(time); - // Too big time values may be unsupported. - if (!lt.run()) FMT_THROW(format_error("time_t value out of range")); - return lt.tm_; -} - -// Thread-safe replacement for std::gmtime -inline std::tm gmtime(std::time_t time) { - struct dispatcher { - std::time_t time_; - std::tm tm_; - - dispatcher(std::time_t t) : time_(t) {} - - bool run() { - using namespace fmt::internal; - return handle(gmtime_r(&time_, &tm_)); - } - - bool handle(std::tm* tm) { return tm != nullptr; } - - bool handle(internal::null<>) { - using namespace fmt::internal; - return fallback(gmtime_s(&tm_, &time_)); - } - - bool fallback(int res) { return res == 0; } - -#if !FMT_MSC_VER - bool fallback(internal::null<>) { - std::tm* tm = std::gmtime(&time_); - if (tm) tm_ = *tm; - return tm != nullptr; - } -#endif - }; - dispatcher gt(time); - // Too big time values may be unsupported. - if (!gt.run()) FMT_THROW(format_error("time_t value out of range")); - return gt.tm_; -} - -namespace internal { -inline std::size_t strftime(char* str, std::size_t count, const char* format, - const std::tm* time) { - return std::strftime(str, count, format, time); -} - -inline std::size_t strftime(wchar_t* str, std::size_t count, - const wchar_t* format, const std::tm* time) { - return std::wcsftime(str, count, format, time); -} -} // namespace internal - -template <typename Char> struct formatter<std::tm, Char> { - template <typename ParseContext> - auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - auto it = ctx.begin(); - if (it != ctx.end() && *it == ':') ++it; - auto end = it; - while (end != ctx.end() && *end != '}') ++end; - tm_format.reserve(internal::to_unsigned(end - it + 1)); - tm_format.append(it, end); - tm_format.push_back('\0'); - return end; - } - - template <typename FormatContext> - auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) { - basic_memory_buffer<Char> buf; - std::size_t start = buf.size(); - for (;;) { - std::size_t size = buf.capacity() - start; - std::size_t count = - internal::strftime(&buf[start], size, &tm_format[0], &tm); - if (count != 0) { - buf.resize(start + count); - break; - } - if (size >= tm_format.size() * 256) { - // If the buffer is 256 times larger than the format string, assume - // that `strftime` gives an empty result. There doesn't seem to be a - // better way to distinguish the two cases: - // https://github.com/fmtlib/fmt/issues/367 - break; - } - const std::size_t MIN_GROWTH = 10; - buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH)); - } - return std::copy(buf.begin(), buf.end(), ctx.out()); - } - - basic_memory_buffer<Char> tm_format; -}; - -namespace internal { -template <typename Period> FMT_CONSTEXPR const char* get_units() { - return nullptr; -} -template <> FMT_CONSTEXPR const char* get_units<std::atto>() { return "as"; } -template <> FMT_CONSTEXPR const char* get_units<std::femto>() { return "fs"; } -template <> FMT_CONSTEXPR const char* get_units<std::pico>() { return "ps"; } -template <> FMT_CONSTEXPR const char* get_units<std::nano>() { return "ns"; } -template <> FMT_CONSTEXPR const char* get_units<std::micro>() { return "µs"; } -template <> FMT_CONSTEXPR const char* get_units<std::milli>() { return "ms"; } -template <> FMT_CONSTEXPR const char* get_units<std::centi>() { return "cs"; } -template <> FMT_CONSTEXPR const char* get_units<std::deci>() { return "ds"; } -template <> FMT_CONSTEXPR const char* get_units<std::ratio<1>>() { return "s"; } -template <> FMT_CONSTEXPR const char* get_units<std::deca>() { return "das"; } -template <> FMT_CONSTEXPR const char* get_units<std::hecto>() { return "hs"; } -template <> FMT_CONSTEXPR const char* get_units<std::kilo>() { return "ks"; } -template <> FMT_CONSTEXPR const char* get_units<std::mega>() { return "Ms"; } -template <> FMT_CONSTEXPR const char* get_units<std::giga>() { return "Gs"; } -template <> FMT_CONSTEXPR const char* get_units<std::tera>() { return "Ts"; } -template <> FMT_CONSTEXPR const char* get_units<std::peta>() { return "Ps"; } -template <> FMT_CONSTEXPR const char* get_units<std::exa>() { return "Es"; } -template <> FMT_CONSTEXPR const char* get_units<std::ratio<60>>() { - return "m"; -} -template <> FMT_CONSTEXPR const char* get_units<std::ratio<3600>>() { - return "h"; -} - -enum class numeric_system { - standard, - // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale. - alternative -}; - -// Parses a put_time-like format string and invokes handler actions. -template <typename Char, typename Handler> -FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, - const Char* end, - Handler&& handler) { - auto ptr = begin; - while (ptr != end) { - auto c = *ptr; - if (c == '}') break; - if (c != '%') { - ++ptr; - continue; - } - if (begin != ptr) handler.on_text(begin, ptr); - ++ptr; // consume '%' - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case '%': - handler.on_text(ptr - 1, ptr); - break; - case 'n': { - const char newline[] = "\n"; - handler.on_text(newline, newline + 1); - break; - } - case 't': { - const char tab[] = "\t"; - handler.on_text(tab, tab + 1); - break; - } - // Day of the week: - case 'a': - handler.on_abbr_weekday(); - break; - case 'A': - handler.on_full_weekday(); - break; - case 'w': - handler.on_dec0_weekday(numeric_system::standard); - break; - case 'u': - handler.on_dec1_weekday(numeric_system::standard); - break; - // Month: - case 'b': - handler.on_abbr_month(); - break; - case 'B': - handler.on_full_month(); - break; - // Hour, minute, second: - case 'H': - handler.on_24_hour(numeric_system::standard); - break; - case 'I': - handler.on_12_hour(numeric_system::standard); - break; - case 'M': - handler.on_minute(numeric_system::standard); - break; - case 'S': - handler.on_second(numeric_system::standard); - break; - // Other: - case 'c': - handler.on_datetime(numeric_system::standard); - break; - case 'x': - handler.on_loc_date(numeric_system::standard); - break; - case 'X': - handler.on_loc_time(numeric_system::standard); - break; - case 'D': - handler.on_us_date(); - break; - case 'F': - handler.on_iso_date(); - break; - case 'r': - handler.on_12_hour_time(); - break; - case 'R': - handler.on_24_hour_time(); - break; - case 'T': - handler.on_iso_time(); - break; - case 'p': - handler.on_am_pm(); - break; - case 'Q': - handler.on_duration_value(); - break; - case 'q': - handler.on_duration_unit(); - break; - case 'z': - handler.on_utc_offset(); - break; - case 'Z': - handler.on_tz_name(); - break; - // Alternative representation: - case 'E': { - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case 'c': - handler.on_datetime(numeric_system::alternative); - break; - case 'x': - handler.on_loc_date(numeric_system::alternative); - break; - case 'X': - handler.on_loc_time(numeric_system::alternative); - break; - default: - FMT_THROW(format_error("invalid format")); - } - break; - } - case 'O': - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case 'w': - handler.on_dec0_weekday(numeric_system::alternative); - break; - case 'u': - handler.on_dec1_weekday(numeric_system::alternative); - break; - case 'H': - handler.on_24_hour(numeric_system::alternative); - break; - case 'I': - handler.on_12_hour(numeric_system::alternative); - break; - case 'M': - handler.on_minute(numeric_system::alternative); - break; - case 'S': - handler.on_second(numeric_system::alternative); - break; - default: - FMT_THROW(format_error("invalid format")); - } - break; - default: - FMT_THROW(format_error("invalid format")); - } - begin = ptr; - } - if (begin != ptr) handler.on_text(begin, ptr); - return ptr; -} - -struct chrono_format_checker { - FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); } - - template <typename Char> void on_text(const Char*, const Char*) {} - FMT_NORETURN void on_abbr_weekday() { report_no_date(); } - FMT_NORETURN void on_full_weekday() { report_no_date(); } - FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_abbr_month() { report_no_date(); } - FMT_NORETURN void on_full_month() { report_no_date(); } - void on_24_hour(numeric_system) {} - void on_12_hour(numeric_system) {} - void on_minute(numeric_system) {} - void on_second(numeric_system) {} - FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); } - FMT_NORETURN void on_us_date() { report_no_date(); } - FMT_NORETURN void on_iso_date() { report_no_date(); } - void on_12_hour_time() {} - void on_24_hour_time() {} - void on_iso_time() {} - void on_am_pm() {} - void on_duration_value() {} - void on_duration_unit() {} - FMT_NORETURN void on_utc_offset() { report_no_date(); } - FMT_NORETURN void on_tz_name() { report_no_date(); } -}; - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline bool isnan(T) { - return false; -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline bool isnan(T value) { - return std::isnan(value); -} - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline bool isfinite(T) { - return true; -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline bool isfinite(T value) { - return std::isfinite(value); -} - -// Convers value to int and checks that it's in the range [0, upper). -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT(value >= 0 && value <= upper, "invalid value"); - (void)upper; - return static_cast<int>(value); -} -template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT( - std::isnan(value) || (value >= 0 && value <= static_cast<T>(upper)), - "invalid value"); - (void)upper; - return static_cast<int>(value); -} - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline T mod(T x, int y) { - return x % y; -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline T mod(T x, int y) { - return std::fmod(x, static_cast<T>(y)); -} - -// If T is an integral type, maps T to its unsigned counterpart, otherwise -// leaves it unchanged (unlike std::make_unsigned). -template <typename T, bool INTEGRAL = std::is_integral<T>::value> -struct make_unsigned_or_unchanged { - using type = T; -}; - -template <typename T> struct make_unsigned_or_unchanged<T, true> { - using type = typename std::make_unsigned<T>::type; -}; - -#if FMT_SAFE_DURATION_CAST -// throwing version of safe_duration_cast -template <typename To, typename FromRep, typename FromPeriod> -To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) { - int ec; - To to = safe_duration_cast::safe_duration_cast<To>(from, ec); - if (ec) FMT_THROW(format_error("cannot format duration")); - return to; -} -#endif - -template <typename Rep, typename Period, - FMT_ENABLE_IF(std::is_integral<Rep>::value)> -inline std::chrono::duration<Rep, std::milli> get_milliseconds( - std::chrono::duration<Rep, Period> d) { - // this may overflow and/or the result may not fit in the - // target type. -#if FMT_SAFE_DURATION_CAST - using CommonSecondsType = - typename std::common_type<decltype(d), std::chrono::seconds>::type; - const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d); - const auto d_as_whole_seconds = - fmt_safe_duration_cast<std::chrono::seconds>(d_as_common); - // this conversion should be nonproblematic - const auto diff = d_as_common - d_as_whole_seconds; - const auto ms = - fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff); - return ms; -#else - auto s = std::chrono::duration_cast<std::chrono::seconds>(d); - return std::chrono::duration_cast<std::chrono::milliseconds>(d - s); -#endif -} - -template <typename Rep, typename Period, - FMT_ENABLE_IF(std::is_floating_point<Rep>::value)> -inline std::chrono::duration<Rep, std::milli> get_milliseconds( - std::chrono::duration<Rep, Period> d) { - using common_type = typename std::common_type<Rep, std::intmax_t>::type; - auto ms = mod(d.count() * static_cast<common_type>(Period::num) / - static_cast<common_type>(Period::den) * 1000, - 1000); - return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms)); -} - -template <typename Rep, typename OutputIt> -OutputIt format_chrono_duration_value(OutputIt out, Rep val, int precision) { - if (precision >= 0) return format_to(out, "{:.{}f}", val, precision); - return format_to(out, std::is_floating_point<Rep>::value ? "{:g}" : "{}", - val); -} - -template <typename Period, typename OutputIt> -static OutputIt format_chrono_duration_unit(OutputIt out) { - if (const char* unit = get_units<Period>()) return format_to(out, "{}", unit); - if (Period::den == 1) return format_to(out, "[{}]s", Period::num); - return format_to(out, "[{}/{}]s", Period::num, Period::den); -} - -template <typename FormatContext, typename OutputIt, typename Rep, - typename Period> -struct chrono_formatter { - FormatContext& context; - OutputIt out; - int precision; - // rep is unsigned to avoid overflow. - using rep = - conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int), - unsigned, typename make_unsigned_or_unchanged<Rep>::type>; - rep val; - using seconds = std::chrono::duration<rep>; - seconds s; - using milliseconds = std::chrono::duration<rep, std::milli>; - bool negative; - - using char_type = typename FormatContext::char_type; - - explicit chrono_formatter(FormatContext& ctx, OutputIt o, - std::chrono::duration<Rep, Period> d) - : context(ctx), out(o), val(d.count()), negative(false) { - if (d.count() < 0) { - val = -val; - negative = true; - } - - // this may overflow and/or the result may not fit in the - // target type. -#if FMT_SAFE_DURATION_CAST - // might need checked conversion (rep!=Rep) - auto tmpval = std::chrono::duration<rep, Period>(val); - s = fmt_safe_duration_cast<seconds>(tmpval); -#else - s = std::chrono::duration_cast<seconds>( - std::chrono::duration<rep, Period>(val)); -#endif - } - - // returns true if nan or inf, writes to out. - bool handle_nan_inf() { - if (isfinite(val)) { - return false; - } - if (isnan(val)) { - write_nan(); - return true; - } - // must be +-inf - if (val > 0) { - write_pinf(); - } else { - write_ninf(); - } - return true; - } - - Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); } - - Rep hour12() const { - Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12)); - return hour <= 0 ? 12 : hour; - } - - Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); } - Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); } - - std::tm time() const { - auto time = std::tm(); - time.tm_hour = to_nonnegative_int(hour(), 24); - time.tm_min = to_nonnegative_int(minute(), 60); - time.tm_sec = to_nonnegative_int(second(), 60); - return time; - } - - void write_sign() { - if (negative) { - *out++ = '-'; - negative = false; - } - } - - void write(Rep value, int width) { - write_sign(); - if (isnan(value)) return write_nan(); - uint32_or_64_t<int> n = to_unsigned( - to_nonnegative_int(value, (std::numeric_limits<int>::max)())); - int num_digits = internal::count_digits(n); - if (width > num_digits) out = std::fill_n(out, width - num_digits, '0'); - out = format_decimal<char_type>(out, n, num_digits); - } - - void write_nan() { std::copy_n("nan", 3, out); } - void write_pinf() { std::copy_n("inf", 3, out); } - void write_ninf() { std::copy_n("-inf", 4, out); } - - void format_localized(const tm& time, const char* format) { - if (isnan(val)) return write_nan(); - auto locale = context.locale().template get<std::locale>(); - auto& facet = std::use_facet<std::time_put<char_type>>(locale); - std::basic_ostringstream<char_type> os; - os.imbue(locale); - facet.put(os, os, ' ', &time, format, format + std::strlen(format)); - auto str = os.str(); - std::copy(str.begin(), str.end(), out); - } - - void on_text(const char_type* begin, const char_type* end) { - std::copy(begin, end, out); - } - - // These are not implemented because durations don't have date information. - void on_abbr_weekday() {} - void on_full_weekday() {} - void on_dec0_weekday(numeric_system) {} - void on_dec1_weekday(numeric_system) {} - void on_abbr_month() {} - void on_full_month() {} - void on_datetime(numeric_system) {} - void on_loc_date(numeric_system) {} - void on_loc_time(numeric_system) {} - void on_us_date() {} - void on_iso_date() {} - void on_utc_offset() {} - void on_tz_name() {} - - void on_24_hour(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(hour(), 2); - auto time = tm(); - time.tm_hour = to_nonnegative_int(hour(), 24); - format_localized(time, "%OH"); - } - - void on_12_hour(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(hour12(), 2); - auto time = tm(); - time.tm_hour = to_nonnegative_int(hour12(), 12); - format_localized(time, "%OI"); - } - - void on_minute(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(minute(), 2); - auto time = tm(); - time.tm_min = to_nonnegative_int(minute(), 60); - format_localized(time, "%OM"); - } - - void on_second(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) { - write(second(), 2); -#if FMT_SAFE_DURATION_CAST - // convert rep->Rep - using duration_rep = std::chrono::duration<rep, Period>; - using duration_Rep = std::chrono::duration<Rep, Period>; - auto tmpval = fmt_safe_duration_cast<duration_Rep>(duration_rep{val}); -#else - auto tmpval = std::chrono::duration<Rep, Period>(val); -#endif - auto ms = get_milliseconds(tmpval); - if (ms != std::chrono::milliseconds(0)) { - *out++ = '.'; - write(ms.count(), 3); - } - return; - } - auto time = tm(); - time.tm_sec = to_nonnegative_int(second(), 60); - format_localized(time, "%OS"); - } - - void on_12_hour_time() { - if (handle_nan_inf()) return; - - format_localized(time(), "%r"); - } - - void on_24_hour_time() { - if (handle_nan_inf()) { - *out++ = ':'; - handle_nan_inf(); - return; - } - - write(hour(), 2); - *out++ = ':'; - write(minute(), 2); - } - - void on_iso_time() { - on_24_hour_time(); - *out++ = ':'; - if (handle_nan_inf()) return; - write(second(), 2); - } - - void on_am_pm() { - if (handle_nan_inf()) return; - format_localized(time(), "%p"); - } - - void on_duration_value() { - if (handle_nan_inf()) return; - write_sign(); - out = format_chrono_duration_value(out, val, precision); - } - - void on_duration_unit() { out = format_chrono_duration_unit<Period>(out); } -}; -} // namespace internal - -template <typename Rep, typename Period, typename Char> -struct formatter<std::chrono::duration<Rep, Period>, Char> { - private: - basic_format_specs<Char> specs; - int precision; - using arg_ref_type = internal::arg_ref<Char>; - arg_ref_type width_ref; - arg_ref_type precision_ref; - mutable basic_string_view<Char> format_str; - using duration = std::chrono::duration<Rep, Period>; - - struct spec_handler { - formatter& f; - basic_parse_context<Char>& context; - basic_string_view<Char> format_str; - - template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) { - context.check_arg_id(arg_id); - return arg_ref_type(arg_id); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) { - context.check_arg_id(arg_id); - const auto str_val = internal::string_view_metadata(format_str, arg_id); - return arg_ref_type(str_val); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(internal::auto_id) { - return arg_ref_type(context.next_arg_id()); - } - - void on_error(const char* msg) { FMT_THROW(format_error(msg)); } - void on_fill(Char fill) { f.specs.fill[0] = fill; } - void on_align(align_t align) { f.specs.align = align; } - void on_width(unsigned width) { f.specs.width = width; } - void on_precision(unsigned precision) { f.precision = precision; } - void end_precision() {} - - template <typename Id> void on_dynamic_width(Id arg_id) { - f.width_ref = make_arg_ref(arg_id); - } - - template <typename Id> void on_dynamic_precision(Id arg_id) { - f.precision_ref = make_arg_ref(arg_id); - } - }; - - using iterator = typename basic_parse_context<Char>::iterator; - struct parse_range { - iterator begin; - iterator end; - }; - - FMT_CONSTEXPR parse_range do_parse(basic_parse_context<Char>& ctx) { - auto begin = ctx.begin(), end = ctx.end(); - if (begin == end || *begin == '}') return {begin, begin}; - spec_handler handler{*this, ctx, format_str}; - begin = internal::parse_align(begin, end, handler); - if (begin == end) return {begin, begin}; - begin = internal::parse_width(begin, end, handler); - if (begin == end) return {begin, begin}; - if (*begin == '.') { - if (std::is_floating_point<Rep>::value) - begin = internal::parse_precision(begin, end, handler); - else - handler.on_error("precision not allowed for this argument type"); - } - end = parse_chrono_format(begin, end, internal::chrono_format_checker()); - return {begin, end}; - } - - public: - formatter() : precision(-1) {} - - FMT_CONSTEXPR auto parse(basic_parse_context<Char>& ctx) - -> decltype(ctx.begin()) { - auto range = do_parse(ctx); - format_str = basic_string_view<Char>( - &*range.begin, internal::to_unsigned(range.end - range.begin)); - return range.end; - } - - template <typename FormatContext> - auto format(const duration& d, FormatContext& ctx) -> decltype(ctx.out()) { - auto begin = format_str.begin(), end = format_str.end(); - // As a possible future optimization, we could avoid extra copying if width - // is not specified. - basic_memory_buffer<Char> buf; - auto out = std::back_inserter(buf); - using range = internal::output_range<decltype(ctx.out()), Char>; - internal::basic_writer<range> w(range(ctx.out())); - internal::handle_dynamic_spec<internal::width_checker>( - specs.width, width_ref, ctx, format_str.begin()); - internal::handle_dynamic_spec<internal::precision_checker>( - precision, precision_ref, ctx, format_str.begin()); - if (begin == end || *begin == '}') { - out = internal::format_chrono_duration_value(out, d.count(), precision); - internal::format_chrono_duration_unit<Period>(out); - } else { - internal::chrono_formatter<FormatContext, decltype(out), Rep, Period> f( - ctx, out, d); - f.precision = precision; - parse_chrono_format(begin, end, f); - } - w.write(buf.data(), buf.size(), specs); - return w.out(); - } -}; - -FMT_END_NAMESPACE - -#endif // FMT_CHRONO_H_ diff --git a/deps/fmt/fmt/compile.h b/deps/fmt/fmt/compile.h deleted file mode 100644 index 5beb6aa5ca..0000000000 --- a/deps/fmt/fmt/compile.h +++ /dev/null @@ -1,700 +0,0 @@ -// Formatting library for C++ - experimental format string compilation -// -// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_COMPILE_H_ -#define FMT_COMPILE_H_ - -#include <vector> -#include "format.h" - -FMT_BEGIN_NAMESPACE -namespace internal { - -template <typename Char> struct format_part { - public: - struct named_argument_id { - FMT_CONSTEXPR named_argument_id(internal::string_view_metadata id) - : id(id) {} - internal::string_view_metadata id; - }; - - struct argument_id { - FMT_CONSTEXPR argument_id() : argument_id(0u) {} - - FMT_CONSTEXPR argument_id(unsigned id) - : which(which_arg_id::index), val(id) {} - - FMT_CONSTEXPR argument_id(internal::string_view_metadata id) - : which(which_arg_id::named_index), val(id) {} - - enum class which_arg_id { index, named_index }; - - which_arg_id which; - - union value { - FMT_CONSTEXPR value() : index(0u) {} - FMT_CONSTEXPR value(unsigned id) : index(id) {} - FMT_CONSTEXPR value(internal::string_view_metadata id) - : named_index(id) {} - - unsigned index; - internal::string_view_metadata named_index; - } val; - }; - - struct specification { - FMT_CONSTEXPR specification() : arg_id(0u) {} - FMT_CONSTEXPR specification(unsigned id) : arg_id(id) {} - - FMT_CONSTEXPR specification(internal::string_view_metadata id) - : arg_id(id) {} - - argument_id arg_id; - internal::dynamic_format_specs<Char> parsed_specs; - }; - - FMT_CONSTEXPR format_part() - : which(which_value::argument_id), end_of_argument_id(0u), val(0u) {} - - FMT_CONSTEXPR format_part(internal::string_view_metadata text) - : which(which_value::text), end_of_argument_id(0u), val(text) {} - - FMT_CONSTEXPR format_part(unsigned id) - : which(which_value::argument_id), end_of_argument_id(0u), val(id) {} - - FMT_CONSTEXPR format_part(named_argument_id arg_id) - : which(which_value::named_argument_id), - end_of_argument_id(0u), - val(arg_id) {} - - FMT_CONSTEXPR format_part(specification spec) - : which(which_value::specification), end_of_argument_id(0u), val(spec) {} - - enum class which_value { - argument_id, - named_argument_id, - text, - specification - }; - - which_value which; - std::size_t end_of_argument_id; - union value { - FMT_CONSTEXPR value() : arg_id(0u) {} - FMT_CONSTEXPR value(unsigned id) : arg_id(id) {} - FMT_CONSTEXPR value(named_argument_id named_id) - : named_arg_id(named_id.id) {} - FMT_CONSTEXPR value(internal::string_view_metadata t) : text(t) {} - FMT_CONSTEXPR value(specification s) : spec(s) {} - unsigned arg_id; - internal::string_view_metadata named_arg_id; - internal::string_view_metadata text; - specification spec; - } val; -}; - -template <typename Char, typename PartsContainer> -class format_preparation_handler : public internal::error_handler { - private: - using part = format_part<Char>; - - public: - using iterator = typename basic_string_view<Char>::iterator; - - FMT_CONSTEXPR format_preparation_handler(basic_string_view<Char> format, - PartsContainer& parts) - : parts_(parts), format_(format), parse_context_(format) {} - - FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { - if (begin == end) return; - const auto offset = begin - format_.data(); - const auto size = end - begin; - parts_.add(part(string_view_metadata(offset, size))); - } - - FMT_CONSTEXPR void on_arg_id() { - parts_.add(part(parse_context_.next_arg_id())); - } - - FMT_CONSTEXPR void on_arg_id(unsigned id) { - parse_context_.check_arg_id(id); - parts_.add(part(id)); - } - - FMT_CONSTEXPR void on_arg_id(basic_string_view<Char> id) { - const auto view = string_view_metadata(format_, id); - const auto arg_id = typename part::named_argument_id(view); - parts_.add(part(arg_id)); - } - - FMT_CONSTEXPR void on_replacement_field(const Char* ptr) { - auto last_part = parts_.last(); - last_part.end_of_argument_id = ptr - format_.begin(); - parts_.substitute_last(last_part); - } - - FMT_CONSTEXPR const Char* on_format_specs(const Char* begin, - const Char* end) { - const auto specs_offset = to_unsigned(begin - format_.begin()); - - using parse_context = basic_parse_context<Char>; - internal::dynamic_format_specs<Char> parsed_specs; - dynamic_specs_handler<parse_context> handler(parsed_specs, parse_context_); - begin = parse_format_specs(begin, end, handler); - - if (*begin != '}') on_error("missing '}' in format string"); - - const auto last_part = parts_.last(); - - auto specs = last_part.which == part::which_value::argument_id - ? typename part::specification(last_part.val.arg_id) - : typename part::specification(last_part.val.named_arg_id); - - specs.parsed_specs = parsed_specs; - - auto new_part = part(specs); - new_part.end_of_argument_id = specs_offset; - - parts_.substitute_last(new_part); - - return begin; - } - - private: - PartsContainer& parts_; - basic_string_view<Char> format_; - basic_parse_context<Char> parse_context_; -}; - -template <typename Format, typename PreparedPartsProvider, typename... Args> -class prepared_format { - public: - using char_type = char_t<Format>; - using format_part_t = format_part<char_type>; - - prepared_format(Format f) - : format_(std::move(f)), parts_provider_(to_string_view(format_)) {} - - prepared_format() = delete; - - using context = buffer_context<char_type>; - - template <typename Range, typename Context> - auto vformat_to(Range out, basic_format_args<Context> args) const -> - typename Context::iterator { - const auto format_view = internal::to_string_view(format_); - basic_parse_context<char_type> parse_ctx(format_view); - Context ctx(out.begin(), args); - - const auto& parts = parts_provider_.parts(); - for (auto part_it = parts.begin(); part_it != parts.end(); ++part_it) { - const auto& part = *part_it; - const auto& value = part.val; - - switch (part.which) { - case format_part_t::which_value::text: { - const auto text = value.text.to_view(format_view.data()); - auto output = ctx.out(); - auto&& it = internal::reserve(output, text.size()); - it = std::copy_n(text.begin(), text.size(), it); - ctx.advance_to(output); - } break; - - case format_part_t::which_value::argument_id: { - advance_parse_context_to_specification(parse_ctx, part); - format_arg<Range>(parse_ctx, ctx, value.arg_id); - } break; - - case format_part_t::which_value::named_argument_id: { - advance_parse_context_to_specification(parse_ctx, part); - const auto named_arg_id = - value.named_arg_id.to_view(format_view.data()); - format_arg<Range>(parse_ctx, ctx, named_arg_id); - } break; - case format_part_t::which_value::specification: { - const auto& arg_id_value = value.spec.arg_id.val; - const auto arg = value.spec.arg_id.which == - format_part_t::argument_id::which_arg_id::index - ? ctx.arg(arg_id_value.index) - : ctx.arg(arg_id_value.named_index.to_view( - to_string_view(format_).data())); - - auto specs = value.spec.parsed_specs; - - handle_dynamic_spec<internal::width_checker>( - specs.width, specs.width_ref, ctx, format_view.begin()); - handle_dynamic_spec<internal::precision_checker>( - specs.precision, specs.precision_ref, ctx, format_view.begin()); - - check_prepared_specs(specs, arg.type()); - advance_parse_context_to_specification(parse_ctx, part); - ctx.advance_to( - visit_format_arg(arg_formatter<Range>(ctx, nullptr, &specs), arg)); - } break; - } - } - - return ctx.out(); - } - - private: - void advance_parse_context_to_specification( - basic_parse_context<char_type>& parse_ctx, - const format_part_t& part) const { - const auto view = to_string_view(format_); - const auto specification_begin = view.data() + part.end_of_argument_id; - advance_to(parse_ctx, specification_begin); - } - - template <typename Range, typename Context, typename Id> - void format_arg(basic_parse_context<char_type>& parse_ctx, Context& ctx, - Id arg_id) const { - parse_ctx.check_arg_id(arg_id); - const auto stopped_at = - visit_format_arg(arg_formatter<Range>(ctx), ctx.arg(arg_id)); - ctx.advance_to(stopped_at); - } - - template <typename Char> - void check_prepared_specs(const basic_format_specs<Char>& specs, - internal::type arg_type) const { - internal::error_handler h; - numeric_specs_checker<internal::error_handler> checker(h, arg_type); - if (specs.align == align::numeric) checker.require_numeric_argument(); - if (specs.sign != sign::none) checker.check_sign(); - if (specs.alt) checker.require_numeric_argument(); - if (specs.precision >= 0) checker.check_precision(); - } - - private: - Format format_; - PreparedPartsProvider parts_provider_; -}; - -template <typename Format> class compiletime_prepared_parts_type_provider { - private: - using char_type = char_t<Format>; - - class count_handler { - public: - FMT_CONSTEXPR count_handler() : counter_(0u) {} - - FMT_CONSTEXPR void on_text(const char_type* begin, const char_type* end) { - if (begin != end) ++counter_; - } - - FMT_CONSTEXPR void on_arg_id() { ++counter_; } - FMT_CONSTEXPR void on_arg_id(unsigned) { ++counter_; } - FMT_CONSTEXPR void on_arg_id(basic_string_view<char_type>) { ++counter_; } - - FMT_CONSTEXPR void on_replacement_field(const char_type*) {} - - FMT_CONSTEXPR const char_type* on_format_specs(const char_type* begin, - const char_type* end) { - return find_matching_brace(begin, end); - } - - FMT_CONSTEXPR void on_error(const char*) {} - - FMT_CONSTEXPR unsigned result() const { return counter_; } - - private: - FMT_CONSTEXPR const char_type* find_matching_brace(const char_type* begin, - const char_type* end) { - unsigned braces_counter{0u}; - for (; begin != end; ++begin) { - if (*begin == '{') { - ++braces_counter; - } else if (*begin == '}') { - if (braces_counter == 0u) break; - --braces_counter; - } - } - return begin; - } - - private: - unsigned counter_; - }; - - static FMT_CONSTEXPR unsigned count_parts() { - FMT_CONSTEXPR_DECL const auto text = to_string_view(Format{}); - count_handler handler; - internal::parse_format_string</*IS_CONSTEXPR=*/true>(text, handler); - return handler.result(); - } - -// Workaround for old compilers. Compiletime parts preparation will not be -// performed with them anyway. -#if FMT_USE_CONSTEXPR - static FMT_CONSTEXPR_DECL const unsigned number_of_format_parts = - compiletime_prepared_parts_type_provider::count_parts(); -#else - static const unsigned number_of_format_parts = 0u; -#endif - - public: - template <unsigned N> struct format_parts_array { - using value_type = format_part<char_type>; - - FMT_CONSTEXPR format_parts_array() : arr{} {} - - FMT_CONSTEXPR value_type& operator[](unsigned ind) { return arr[ind]; } - - FMT_CONSTEXPR const value_type* begin() const { return arr; } - - FMT_CONSTEXPR const value_type* end() const { return begin() + N; } - - private: - value_type arr[N]; - }; - - struct empty { - // Parts preparator will search for it - using value_type = format_part<char_type>; - }; - - using type = conditional_t<static_cast<bool>(number_of_format_parts), - format_parts_array<number_of_format_parts>, empty>; -}; - -template <typename Parts> class compiletime_prepared_parts_collector { - private: - using format_part = typename Parts::value_type; - - public: - FMT_CONSTEXPR explicit compiletime_prepared_parts_collector(Parts& parts) - : parts_{parts}, counter_{0u} {} - - FMT_CONSTEXPR void add(format_part part) { parts_[counter_++] = part; } - - FMT_CONSTEXPR void substitute_last(format_part part) { - parts_[counter_ - 1] = part; - } - - FMT_CONSTEXPR format_part last() { return parts_[counter_ - 1]; } - - private: - Parts& parts_; - unsigned counter_; -}; - -template <typename PartsContainer, typename Char> -FMT_CONSTEXPR PartsContainer prepare_parts(basic_string_view<Char> format) { - PartsContainer parts; - internal::parse_format_string</*IS_CONSTEXPR=*/false>( - format, format_preparation_handler<Char, PartsContainer>(format, parts)); - return parts; -} - -template <typename PartsContainer, typename Char> -FMT_CONSTEXPR PartsContainer -prepare_compiletime_parts(basic_string_view<Char> format) { - using collector = compiletime_prepared_parts_collector<PartsContainer>; - - PartsContainer parts; - collector c(parts); - internal::parse_format_string</*IS_CONSTEXPR=*/true>( - format, format_preparation_handler<Char, collector>(format, c)); - return parts; -} - -template <typename PartsContainer> class runtime_parts_provider { - public: - runtime_parts_provider() = delete; - template <typename Char> - runtime_parts_provider(basic_string_view<Char> format) - : parts_(prepare_parts<PartsContainer>(format)) {} - - const PartsContainer& parts() const { return parts_; } - - private: - PartsContainer parts_; -}; - -template <typename Format, typename PartsContainer> -struct compiletime_parts_provider { - compiletime_parts_provider() = delete; - template <typename Char> - FMT_CONSTEXPR compiletime_parts_provider(basic_string_view<Char>) {} - - const PartsContainer& parts() const { - static FMT_CONSTEXPR_DECL const PartsContainer prepared_parts = - prepare_compiletime_parts<PartsContainer>( - internal::to_string_view(Format{})); - - return prepared_parts; - } -}; - -template <typename PartsContainer> -struct parts_container_concept_check : std::true_type { - static_assert(std::is_copy_constructible<PartsContainer>::value, - "PartsContainer is not copy constructible"); - static_assert(std::is_move_constructible<PartsContainer>::value, - "PartsContainer is not move constructible"); - - template <typename T, typename = void> - struct has_format_part_type : std::false_type {}; - template <typename T> - struct has_format_part_type<T, void_t<typename T::format_part_type>> - : std::true_type {}; - - static_assert(has_format_part_type<PartsContainer>::value, - "PartsContainer doesn't provide format_part_type"); - - struct check_second {}; - struct check_first : check_second {}; - - template <typename T> static std::false_type has_add_check(check_second); - template <typename T> - static decltype( - (void)std::declval<T>().add(std::declval<typename T::format_part_type>()), - std::true_type()) has_add_check(check_first); - using has_add = decltype(has_add_check<PartsContainer>(check_first())); - static_assert(has_add::value, "PartsContainer doesn't provide add() method"); - - template <typename T> static std::false_type has_last_check(check_second); - template <typename T> - static decltype((void)std::declval<T>().last(), - std::true_type()) has_last_check(check_first); - using has_last = decltype(has_last_check<PartsContainer>(check_first())); - static_assert(has_last::value, - "PartsContainer doesn't provide last() method"); - - template <typename T> - static std::false_type has_substitute_last_check(check_second); - template <typename T> - static decltype((void)std::declval<T>().substitute_last( - std::declval<typename T::format_part_type>()), - std::true_type()) has_substitute_last_check(check_first); - using has_substitute_last = - decltype(has_substitute_last_check<PartsContainer>(check_first())); - static_assert(has_substitute_last::value, - "PartsContainer doesn't provide substitute_last() method"); - - template <typename T> static std::false_type has_begin_check(check_second); - template <typename T> - static decltype((void)std::declval<T>().begin(), - std::true_type()) has_begin_check(check_first); - using has_begin = decltype(has_begin_check<PartsContainer>(check_first())); - static_assert(has_begin::value, - "PartsContainer doesn't provide begin() method"); - - template <typename T> static std::false_type has_end_check(check_second); - template <typename T> - static decltype((void)std::declval<T>().end(), - std::true_type()) has_end_check(check_first); - using has_end = decltype(has_end_check<PartsContainer>(check_first())); - static_assert(has_end::value, "PartsContainer doesn't provide end() method"); -}; - -template <bool IS_CONSTEXPR, typename Format, typename /*PartsContainer*/> -struct parts_provider_type { - using type = compiletime_parts_provider< - Format, typename compiletime_prepared_parts_type_provider<Format>::type>; -}; - -template <typename Format, typename PartsContainer> -struct parts_provider_type</*IS_CONSTEXPR=*/false, Format, PartsContainer> { - static_assert(parts_container_concept_check<PartsContainer>::value, - "Parts container doesn't meet the concept"); - using type = runtime_parts_provider<PartsContainer>; -}; - -template <typename Format, typename PreparedPartsContainer, typename... Args> -struct basic_prepared_format { - using type = - internal::prepared_format<Format, - typename internal::parts_provider_type< - is_compile_string<Format>::value, Format, - PreparedPartsContainer>::type, - Args...>; -}; - -template <typename Char> -std::basic_string<Char> to_runtime_format(basic_string_view<Char> format) { - return std::basic_string<Char>(format.begin(), format.size()); -} - -template <typename Char> -std::basic_string<Char> to_runtime_format(const Char* format) { - return std::basic_string<Char>(format); -} - -template <typename Char, typename Container = std::vector<format_part<Char>>> -class parts_container { - public: - using format_part_type = format_part<Char>; - - void add(format_part_type part) { parts_.push_back(std::move(part)); } - - void substitute_last(format_part_type part) { - parts_.back() = std::move(part); - } - - format_part_type last() { return parts_.back(); } - - auto begin() -> decltype(std::declval<Container>().begin()) { - return parts_.begin(); - } - - auto begin() const -> decltype(std::declval<const Container>().begin()) { - return parts_.begin(); - } - - auto end() -> decltype(std::declval<Container>().end()) { - return parts_.end(); - } - - auto end() const -> decltype(std::declval<const Container>().end()) { - return parts_.end(); - } - - private: - Container parts_; -}; - -// Delegate preparing to preparator, to take advantage of a partial -// specialization. -template <typename Format, typename... Args> struct preparator { - using container = parts_container<char_t<Format>>; - using prepared_format_type = - typename basic_prepared_format<Format, container, Args...>::type; - - static auto prepare(Format format) -> prepared_format_type { - return prepared_format_type(std::move(format)); - } -}; - -template <typename PassedFormat, typename PreparedFormatFormat, - typename PartsContainer, typename... Args> -struct preparator<PassedFormat, prepared_format<PreparedFormatFormat, - PartsContainer, Args...>> { - using prepared_format_type = - prepared_format<PreparedFormatFormat, PartsContainer, Args...>; - - static auto prepare(PassedFormat format) -> prepared_format_type { - return prepared_format_type(std::move(format)); - } -}; - -struct compiletime_format_tag {}; -struct runtime_format_tag {}; - -template <typename Format> struct format_tag { - using type = conditional_t<is_compile_string<Format>::value, - compiletime_format_tag, runtime_format_tag>; -}; - -#if FMT_USE_CONSTEXPR -template <typename Format, typename... Args> -auto do_compile(runtime_format_tag, Format format) { - return preparator<Format, Args...>::prepare(std::move(format)); -} - -template <typename Format, typename... Args> -FMT_CONSTEXPR auto do_compile(compiletime_format_tag, const Format& format) { - return typename basic_prepared_format<Format, void, Args...>::type(format); -} -#else -template <typename Format, typename... Args> -auto do_compile(const Format& format) - -> decltype(preparator<Format, Args...>::prepare(format)) { - return preparator<Format, Args...>::prepare(format); -} -#endif - -template <typename... Args> -using prepared_format_t = - typename basic_prepared_format<std::string, parts_container<char>, - Args...>::type; -} // namespace internal - -#if FMT_USE_CONSTEXPR - -template <typename... Args, typename S> -FMT_CONSTEXPR auto compile(S format_str) { - return internal::do_compile<S, Args...>( - typename internal::format_tag<S>::type{}, std::move(format_str)); -} -#else - -template <typename... Args, typename S> -auto compile(S format_str) -> - typename internal::preparator<S, Args...>::prepared_format_type { - return internal::preparator<S, Args...>::prepare(std::move(format_str)); -} -#endif - -template <typename... Args, typename Char> -auto compile(const Char* format_str) -> - typename internal::preparator<std::basic_string<Char>, - Args...>::prepared_format_type { - return compile<Args...>(internal::to_runtime_format(format_str)); -} - -template <typename... Args, typename Char, unsigned N> -auto compile(const Char(format_str)[N]) -> - typename internal::preparator<std::basic_string<Char>, - Args...>::prepared_format_type { - const auto view = basic_string_view<Char>(format_str, N); - return compile<Args...>(internal::to_runtime_format(view)); -} - -template <typename... Args, typename Char> -auto compile(basic_string_view<Char> format_str) -> - typename internal::preparator<std::basic_string<Char>, - Args...>::prepared_format_type { - return compile<Args...>(internal::to_runtime_format(format_str)); -} - -template <typename CompiledFormat, typename... Args, - typename Char = typename CompiledFormat::char_type> -std::basic_string<Char> format(const CompiledFormat& cf, const Args&... args) { - basic_memory_buffer<Char> buffer; - using range = internal::buffer_range<Char>; - using context = buffer_context<Char>; - cf.template vformat_to<range, context>(range(buffer), - {make_format_args<context>(args...)}); - return to_string(buffer); -} - -template <typename OutputIt, typename CompiledFormat, typename... Args> -OutputIt format_to(OutputIt out, const CompiledFormat& cf, - const Args&... args) { - using char_type = typename CompiledFormat::char_type; - using range = internal::output_range<OutputIt, char_type>; - using context = format_context_t<OutputIt, char_type>; - format_arg_store<context, Args...> as(args...); - return cf.template vformat_to<range, context>( - range(out), {make_format_args<context>(args...)}); -} - -template <typename OutputIt, typename CompiledFormat, typename... Args, - FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)> -format_to_n_result<OutputIt> format_to_n(OutputIt out, unsigned n, - const CompiledFormat& cf, - const Args&... args) { - auto it = - cf.format_to(internal::truncating_iterator<OutputIt>(out, n), args...) - .count(); - return {it.base(), it.count()}; -} - -template <typename CompiledFormat, typename... Args> -std::size_t formatted_size(const CompiledFormat& cf, const Args&... args) { - return cf - .format_to( - internal::counting_iterator<typename CompiledFormat::char_type>(), - args...) - .count(); -} - -FMT_END_NAMESPACE - -#endif // FMT_COMPILE_H_ diff --git a/deps/fmt/fmt/core.h b/deps/fmt/fmt/core.h deleted file mode 100644 index 898d447df0..0000000000 --- a/deps/fmt/fmt/core.h +++ /dev/null @@ -1,1414 +0,0 @@ -// Formatting library for C++ - the core API -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_CORE_H_ -#define FMT_CORE_H_ - -#include <cassert> -#include <cstdio> // std::FILE -#include <cstring> -#include <iterator> -#include <string> -#include <type_traits> - -// The fmt library version in the form major * 10000 + minor * 100 + patch. -#define FMT_VERSION 50301 - -#ifdef __has_feature -# define FMT_HAS_FEATURE(x) __has_feature(x) -#else -# define FMT_HAS_FEATURE(x) 0 -#endif - -#if defined(__has_include) && !defined(__INTELLISENSE__) && \ - !(defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1600) -# define FMT_HAS_INCLUDE(x) __has_include(x) -#else -# define FMT_HAS_INCLUDE(x) 0 -#endif - -#ifdef __has_cpp_attribute -# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) -#else -# define FMT_HAS_CPP_ATTRIBUTE(x) 0 -#endif - -#if defined(__GNUC__) && !defined(__clang__) -# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) -#else -# define FMT_GCC_VERSION 0 -#endif - -#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) -# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION -#else -# define FMT_HAS_GXX_CXX11 0 -#endif - -#ifdef _MSC_VER -# define FMT_MSC_VER _MSC_VER -#else -# define FMT_MSC_VER 0 -#endif - -// Check if relaxed C++14 constexpr is supported. -// GCC doesn't allow throw in constexpr until version 6 (bug 67371). -#ifndef FMT_USE_CONSTEXPR -# define FMT_USE_CONSTEXPR \ - (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \ - (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) -#endif -#if FMT_USE_CONSTEXPR -# define FMT_CONSTEXPR constexpr -# define FMT_CONSTEXPR_DECL constexpr -#else -# define FMT_CONSTEXPR inline -# define FMT_CONSTEXPR_DECL -#endif - -#ifndef FMT_OVERRIDE -# if FMT_HAS_FEATURE(cxx_override) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 -# define FMT_OVERRIDE override -# else -# define FMT_OVERRIDE -# endif -#endif - -// Check if exceptions are disabled. -#ifndef FMT_EXCEPTIONS -# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \ - FMT_MSC_VER && !_HAS_EXCEPTIONS -# define FMT_EXCEPTIONS 0 -# else -# define FMT_EXCEPTIONS 1 -# endif -#endif - -// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). -#ifndef FMT_USE_NOEXCEPT -# define FMT_USE_NOEXCEPT 0 -#endif - -#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 -# define FMT_DETECTED_NOEXCEPT noexcept -# define FMT_HAS_CXX11_NOEXCEPT 1 -#else -# define FMT_DETECTED_NOEXCEPT throw() -# define FMT_HAS_CXX11_NOEXCEPT 0 -#endif - -#ifndef FMT_NOEXCEPT -# if FMT_EXCEPTIONS || FMT_HAS_CXX11_NOEXCEPT -# define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT -# else -# define FMT_NOEXCEPT -# endif -#endif - -// [[noreturn]] is disabled on MSVC because of bogus unreachable code warnings. -#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VER -# define FMT_NORETURN [[noreturn]] -#else -# define FMT_NORETURN -#endif - -#ifndef FMT_DEPRECATED -# if (FMT_HAS_CPP_ATTRIBUTE(deprecated) && __cplusplus >= 201402L) || \ - FMT_MSC_VER >= 1900 -# define FMT_DEPRECATED [[deprecated]] -# else -# if defined(__GNUC__) || defined(__clang__) -# define FMT_DEPRECATED __attribute__((deprecated)) -# elif FMT_MSC_VER -# define FMT_DEPRECATED __declspec(deprecated) -# else -# define FMT_DEPRECATED /* deprecated */ -# endif -# endif -#endif - -#ifndef FMT_BEGIN_NAMESPACE -# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \ - FMT_MSC_VER >= 1900 -# define FMT_INLINE_NAMESPACE inline namespace -# define FMT_END_NAMESPACE \ - } \ - } -# else -# define FMT_INLINE_NAMESPACE namespace -# define FMT_END_NAMESPACE \ - } \ - using namespace v5; \ - } -# endif -# define FMT_BEGIN_NAMESPACE \ - namespace fmt { \ - FMT_INLINE_NAMESPACE v5 { -#endif - -#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) -# ifdef FMT_EXPORT -# define FMT_API __declspec(dllexport) -# elif defined(FMT_SHARED) -# define FMT_API __declspec(dllimport) -# define FMT_EXTERN_TEMPLATE_API FMT_API -# endif -#endif -#ifndef FMT_API -# define FMT_API -#endif -#ifndef FMT_EXTERN_TEMPLATE_API -# define FMT_EXTERN_TEMPLATE_API -#endif - -#ifndef FMT_HEADER_ONLY -# define FMT_EXTERN extern -#else -# define FMT_EXTERN -#endif - -#ifndef FMT_ASSERT -# define FMT_ASSERT(condition, message) assert((condition) && message) -#endif - -// libc++ supports string_view in pre-c++17. -#if (FMT_HAS_INCLUDE(<string_view>) && \ - (__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \ - (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910) -# include <string_view> -# define FMT_USE_STRING_VIEW -#elif FMT_HAS_INCLUDE("experimental/string_view") && __cplusplus >= 201402L -# include <experimental/string_view> -# define FMT_USE_EXPERIMENTAL_STRING_VIEW -#endif - -FMT_BEGIN_NAMESPACE - -// Implementations of enable_if_t and other types for pre-C++14 systems. -template <bool B, class T = void> -using enable_if_t = typename std::enable_if<B, T>::type; -template <bool B, class T, class F> -using conditional_t = typename std::conditional<B, T, F>::type; -template <bool B> using bool_constant = std::integral_constant<bool, B>; -template <typename T> -using remove_reference_t = typename std::remove_reference<T>::type; -template <typename T> -using remove_const_t = typename std::remove_const<T>::type; - -struct monostate {}; - -// An enable_if helper to be used in template parameters which results in much -// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed -// to workaround a bug in MSVC 2019 (see #1140 and #1186). -#define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 - -namespace internal { - -// A workaround for gcc 4.8 to make void_t work in a SFINAE context. -template <typename... Ts> struct void_t_impl { using type = void; }; - -#if defined(FMT_USE_STRING_VIEW) -template <typename Char> using std_string_view = std::basic_string_view<Char>; -#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) -template <typename Char> -using std_string_view = std::experimental::basic_string_view<Char>; -#else -template <typename T> struct std_string_view {}; -#endif - -// Casts nonnegative integer to unsigned. -template <typename Int> -FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) { - FMT_ASSERT(value >= 0, "negative value"); - return static_cast<typename std::make_unsigned<Int>::type>(value); -} -} // namespace internal - -template <typename... Ts> -using void_t = typename internal::void_t_impl<Ts...>::type; - -/** - An implementation of ``std::basic_string_view`` for pre-C++17. It provides a - subset of the API. ``fmt::basic_string_view`` is used for format strings even - if ``std::string_view`` is available to prevent issues when a library is - compiled with a different ``-std`` option than the client code (which is not - recommended). - */ -template <typename Char> class basic_string_view { - private: - const Char* data_; - size_t size_; - - public: - using char_type = Char; - using iterator = const Char*; - - FMT_CONSTEXPR basic_string_view() FMT_NOEXCEPT : data_(nullptr), size_(0) {} - - /** Constructs a string reference object from a C string and a size. */ - FMT_CONSTEXPR basic_string_view(const Char* s, size_t count) FMT_NOEXCEPT - : data_(s), - size_(count) {} - - /** - \rst - Constructs a string reference object from a C string computing - the size with ``std::char_traits<Char>::length``. - \endrst - */ - basic_string_view(const Char* s) - : data_(s), size_(std::char_traits<Char>::length(s)) {} - - /** Constructs a string reference from a ``std::basic_string`` object. */ - template <typename Alloc> - FMT_CONSTEXPR basic_string_view(const std::basic_string<Char, Alloc>& s) - FMT_NOEXCEPT : data_(s.data()), - size_(s.size()) {} - - template < - typename S, - FMT_ENABLE_IF(std::is_same<S, internal::std_string_view<Char>>::value)> - FMT_CONSTEXPR basic_string_view(S s) FMT_NOEXCEPT : data_(s.data()), - size_(s.size()) {} - - /** Returns a pointer to the string data. */ - FMT_CONSTEXPR const Char* data() const { return data_; } - - /** Returns the string size. */ - FMT_CONSTEXPR size_t size() const { return size_; } - - FMT_CONSTEXPR iterator begin() const { return data_; } - FMT_CONSTEXPR iterator end() const { return data_ + size_; } - - FMT_CONSTEXPR void remove_prefix(size_t n) { - data_ += n; - size_ -= n; - } - - // Lexicographically compare this string reference to other. - int compare(basic_string_view other) const { - size_t str_size = size_ < other.size_ ? size_ : other.size_; - int result = std::char_traits<Char>::compare(data_, other.data_, str_size); - if (result == 0) - result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); - return result; - } - - friend bool operator==(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) == 0; - } - friend bool operator!=(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) != 0; - } - friend bool operator<(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) < 0; - } - friend bool operator<=(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) <= 0; - } - friend bool operator>(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) > 0; - } - friend bool operator>=(basic_string_view lhs, basic_string_view rhs) { - return lhs.compare(rhs) >= 0; - } -}; - -using string_view = basic_string_view<char>; -using wstring_view = basic_string_view<wchar_t>; - -#ifndef __cpp_char8_t -// A UTF-8 code unit type. -enum char8_t : unsigned char {}; -#endif - -/** Specifies if ``T`` is a character type. Can be specialized by users. */ -template <typename T> struct is_char : std::false_type {}; -template <> struct is_char<char> : std::true_type {}; -template <> struct is_char<wchar_t> : std::true_type {}; -template <> struct is_char<char8_t> : std::true_type {}; -template <> struct is_char<char16_t> : std::true_type {}; -template <> struct is_char<char32_t> : std::true_type {}; - -/** - \rst - Returns a string view of `s`. In order to add custom string type support to - {fmt} provide an overload of `to_string_view` for it in the same namespace as - the type for the argument-dependent lookup to work. - - **Example**:: - - namespace my_ns { - inline string_view to_string_view(const my_string& s) { - return {s.data(), s.length()}; - } - } - std::string message = fmt::format(my_string("The answer is {}"), 42); - \endrst - */ -template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)> -inline basic_string_view<Char> to_string_view(const Char* s) { - return s; -} - -template <typename Char, typename Traits, typename Allocator> -inline basic_string_view<Char> to_string_view( - const std::basic_string<Char, Traits, Allocator>& s) { - return {s.data(), s.size()}; -} - -template <typename Char> -inline basic_string_view<Char> to_string_view(basic_string_view<Char> s) { - return s; -} - -template <typename Char, - FMT_ENABLE_IF(!std::is_empty<internal::std_string_view<Char>>::value)> -inline basic_string_view<Char> to_string_view( - internal::std_string_view<Char> s) { - return s; -} - -// A base class for compile-time strings. It is defined in the fmt namespace to -// make formatting functions visible via ADL, e.g. format(fmt("{}"), 42). -struct compile_string {}; - -template <typename S> -struct is_compile_string : std::is_base_of<compile_string, S> {}; - -template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> -constexpr basic_string_view<typename S::char_type> to_string_view(const S& s) { - return s; -} - -namespace internal { -void to_string_view(...); -using fmt::v5::to_string_view; - -// Specifies whether S is a string type convertible to fmt::basic_string_view. -// It should be a constexpr function but MSVC 2017 fails to compile it in -// enable_if and MSVC 2015 fails to compile it as an alias template. -template <typename S> -struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> { -}; - -template <typename S, typename = void> struct char_t_impl {}; -template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> { - using result = decltype(to_string_view(std::declval<S>())); - using type = typename result::char_type; -}; - -struct error_handler { - FMT_CONSTEXPR error_handler() {} - FMT_CONSTEXPR error_handler(const error_handler&) {} - - // This function is intentionally not constexpr to give a compile-time error. - FMT_NORETURN FMT_API void on_error(const char* message); -}; -} // namespace internal - -/** String's character type. */ -template <typename S> using char_t = typename internal::char_t_impl<S>::type; - -// Parsing context consisting of a format string range being parsed and an -// argument counter for automatic indexing. -template <typename Char, typename ErrorHandler = internal::error_handler> -class basic_parse_context : private ErrorHandler { - private: - basic_string_view<Char> format_str_; - int next_arg_id_; - - public: - using char_type = Char; - using iterator = typename basic_string_view<Char>::iterator; - - explicit FMT_CONSTEXPR basic_parse_context(basic_string_view<Char> format_str, - ErrorHandler eh = ErrorHandler()) - : ErrorHandler(eh), format_str_(format_str), next_arg_id_(0) {} - - // Returns an iterator to the beginning of the format string range being - // parsed. - FMT_CONSTEXPR iterator begin() const FMT_NOEXCEPT { - return format_str_.begin(); - } - - // Returns an iterator past the end of the format string range being parsed. - FMT_CONSTEXPR iterator end() const FMT_NOEXCEPT { return format_str_.end(); } - - // Advances the begin iterator to ``it``. - FMT_CONSTEXPR void advance_to(iterator it) { - format_str_.remove_prefix(internal::to_unsigned(it - begin())); - } - - // Returns the next argument index. - FMT_CONSTEXPR int next_arg_id() { - if (next_arg_id_ >= 0) return next_arg_id_++; - on_error("cannot switch from manual to automatic argument indexing"); - return 0; - } - - FMT_CONSTEXPR bool check_arg_id(int) { - if (next_arg_id_ > 0) { - on_error("cannot switch from automatic to manual argument indexing"); - return false; - } - next_arg_id_ = -1; - return true; - } - - FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {} - - FMT_CONSTEXPR void on_error(const char* message) { - ErrorHandler::on_error(message); - } - - FMT_CONSTEXPR ErrorHandler error_handler() const { return *this; } -}; - -using format_parse_context = basic_parse_context<char>; -using wformat_parse_context = basic_parse_context<wchar_t>; - -using parse_context FMT_DEPRECATED = basic_parse_context<char>; -using wparse_context FMT_DEPRECATED = basic_parse_context<wchar_t>; - -template <typename Context> class basic_format_arg; -template <typename Context> class basic_format_args; - -// A formatter for objects of type T. -template <typename T, typename Char = char, typename Enable = void> -struct formatter { - // A deleted default constructor indicates a disabled formatter. - formatter() = delete; -}; - -template <typename T, typename Char, typename Enable = void> -struct FMT_DEPRECATED convert_to_int - : bool_constant<!std::is_arithmetic<T>::value && - std::is_convertible<T, int>::value> {}; - -namespace internal { - -// Specifies if T has an enabled formatter specialization. A type can be -// formattable even if it doesn't have a formatter e.g. via a conversion. -template <typename T, typename Context> -using has_formatter = - std::is_constructible<typename Context::template formatter_type<T>>; - -/** A contiguous memory buffer with an optional growing ability. */ -template <typename T> class buffer { - private: - buffer(const buffer&) = delete; - void operator=(const buffer&) = delete; - - T* ptr_; - std::size_t size_; - std::size_t capacity_; - - protected: - // Don't initialize ptr_ since it is not accessed to save a few cycles. - buffer(std::size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {} - - buffer(T* p = nullptr, std::size_t sz = 0, std::size_t cap = 0) FMT_NOEXCEPT - : ptr_(p), - size_(sz), - capacity_(cap) {} - - /** Sets the buffer data and capacity. */ - void set(T* buf_data, std::size_t buf_capacity) FMT_NOEXCEPT { - ptr_ = buf_data; - capacity_ = buf_capacity; - } - - /** Increases the buffer capacity to hold at least *capacity* elements. */ - virtual void grow(std::size_t capacity) = 0; - - public: - using value_type = T; - using const_reference = const T&; - - virtual ~buffer() {} - - T* begin() FMT_NOEXCEPT { return ptr_; } - T* end() FMT_NOEXCEPT { return ptr_ + size_; } - - /** Returns the size of this buffer. */ - std::size_t size() const FMT_NOEXCEPT { return size_; } - - /** Returns the capacity of this buffer. */ - std::size_t capacity() const FMT_NOEXCEPT { return capacity_; } - - /** Returns a pointer to the buffer data. */ - T* data() FMT_NOEXCEPT { return ptr_; } - - /** Returns a pointer to the buffer data. */ - const T* data() const FMT_NOEXCEPT { return ptr_; } - - /** - Resizes the buffer. If T is a POD type new elements may not be initialized. - */ - void resize(std::size_t new_size) { - reserve(new_size); - size_ = new_size; - } - - /** Clears this buffer. */ - void clear() { size_ = 0; } - - /** Reserves space to store at least *capacity* elements. */ - void reserve(std::size_t new_capacity) { - if (new_capacity > capacity_) grow(new_capacity); - } - - void push_back(const T& value) { - reserve(size_ + 1); - ptr_[size_++] = value; - } - - /** Appends data to the end of the buffer. */ - template <typename U> void append(const U* begin, const U* end); - - T& operator[](std::size_t index) { return ptr_[index]; } - const T& operator[](std::size_t index) const { return ptr_[index]; } -}; - -// A container-backed buffer. -template <typename Container> -class container_buffer : public buffer<typename Container::value_type> { - private: - Container& container_; - - protected: - void grow(std::size_t capacity) FMT_OVERRIDE { - container_.resize(capacity); - this->set(&container_[0], capacity); - } - - public: - explicit container_buffer(Container& c) - : buffer<typename Container::value_type>(c.size()), container_(c) {} -}; - -// Extracts a reference to the container from back_insert_iterator. -template <typename Container> -inline Container& get_container(std::back_insert_iterator<Container> it) { - using bi_iterator = std::back_insert_iterator<Container>; - struct accessor : bi_iterator { - accessor(bi_iterator iter) : bi_iterator(iter) {} - using bi_iterator::container; - }; - return *accessor(it).container; -} - -template <typename T, typename Char = char, typename Enable = void> -struct fallback_formatter { - fallback_formatter() = delete; -}; - -// Specifies if T has an enabled fallback_formatter specialization. -template <typename T, typename Context> -using has_fallback_formatter = - std::is_constructible<fallback_formatter<T, typename Context::char_type>>; - -template <typename Char> struct named_arg_base; -template <typename T, typename Char> struct named_arg; - -enum type { - none_type, - named_arg_type, - // Integer types should go first, - int_type, - uint_type, - long_long_type, - ulong_long_type, - bool_type, - char_type, - last_integer_type = char_type, - // followed by floating-point types. - double_type, - long_double_type, - last_numeric_type = long_double_type, - cstring_type, - string_type, - pointer_type, - custom_type -}; - -// Maps core type T to the corresponding type enum constant. -template <typename T, typename Char> -struct type_constant : std::integral_constant<type, custom_type> {}; - -#define FMT_TYPE_CONSTANT(Type, constant) \ - template <typename Char> \ - struct type_constant<Type, Char> : std::integral_constant<type, constant> {} - -FMT_TYPE_CONSTANT(const named_arg_base<Char>&, named_arg_type); -FMT_TYPE_CONSTANT(int, int_type); -FMT_TYPE_CONSTANT(unsigned, uint_type); -FMT_TYPE_CONSTANT(long long, long_long_type); -FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type); -FMT_TYPE_CONSTANT(bool, bool_type); -FMT_TYPE_CONSTANT(Char, char_type); -FMT_TYPE_CONSTANT(double, double_type); -FMT_TYPE_CONSTANT(long double, long_double_type); -FMT_TYPE_CONSTANT(const Char*, cstring_type); -FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type); -FMT_TYPE_CONSTANT(const void*, pointer_type); - -FMT_CONSTEXPR bool is_integral(type t) { - FMT_ASSERT(t != named_arg_type, "invalid argument type"); - return t > none_type && t <= last_integer_type; -} - -FMT_CONSTEXPR bool is_arithmetic(type t) { - FMT_ASSERT(t != named_arg_type, "invalid argument type"); - return t > none_type && t <= last_numeric_type; -} - -template <typename Char> struct string_value { - const Char* data; - std::size_t size; -}; - -template <typename Context> struct custom_value { - using parse_context = basic_parse_context<typename Context::char_type>; - const void* value; - void (*format)(const void* arg, parse_context& parse_ctx, Context& ctx); -}; - -// A formatting argument value. -template <typename Context> class value { - public: - using char_type = typename Context::char_type; - - union { - int int_value; - unsigned uint_value; - long long long_long_value; - unsigned long long ulong_long_value; - bool bool_value; - char_type char_value; - double double_value; - long double long_double_value; - const void* pointer; - string_value<char_type> string; - custom_value<Context> custom; - const named_arg_base<char_type>* named_arg; - }; - - FMT_CONSTEXPR value(int val = 0) : int_value(val) {} - FMT_CONSTEXPR value(unsigned val) : uint_value(val) {} - value(long long val) : long_long_value(val) {} - value(unsigned long long val) : ulong_long_value(val) {} - value(double val) : double_value(val) {} - value(long double val) : long_double_value(val) {} - value(bool val) : bool_value(val) {} - value(char_type val) : char_value(val) {} - value(const char_type* val) { string.data = val; } - value(basic_string_view<char_type> val) { - string.data = val.data(); - string.size = val.size(); - } - value(const void* val) : pointer(val) {} - - template <typename T> value(const T& val) { - custom.value = &val; - // Get the formatter type through the context to allow different contexts - // have different extension points, e.g. `formatter<T>` for `format` and - // `printf_formatter<T>` for `printf`. - custom.format = format_custom_arg< - T, conditional_t<has_formatter<T, Context>::value, - typename Context::template formatter_type<T>, - fallback_formatter<T, char_type>>>; - } - - value(const named_arg_base<char_type>& val) { named_arg = &val; } - - private: - // Formats an argument of a custom type, such as a user-defined class. - template <typename T, typename Formatter> - static void format_custom_arg(const void* arg, - basic_parse_context<char_type>& parse_ctx, - Context& ctx) { - Formatter f; - parse_ctx.advance_to(f.parse(parse_ctx)); - ctx.advance_to(f.format(*static_cast<const T*>(arg), ctx)); - } -}; - -template <typename Context, typename T> -FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value); - -// To minimize the number of types we need to deal with, long is translated -// either to int or to long long depending on its size. -enum { long_short = sizeof(long) == sizeof(int) }; -using long_type = conditional_t<long_short, int, long long>; -using ulong_type = conditional_t<long_short, unsigned, unsigned long long>; - -// Maps formatting arguments to core types. -template <typename Context> struct arg_mapper { - using char_type = typename Context::char_type; - - FMT_CONSTEXPR int map(signed char val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned char val) { return val; } - FMT_CONSTEXPR int map(short val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned short val) { return val; } - FMT_CONSTEXPR int map(int val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned val) { return val; } - FMT_CONSTEXPR long_type map(long val) { return val; } - FMT_CONSTEXPR ulong_type map(unsigned long val) { return val; } - FMT_CONSTEXPR long long map(long long val) { return val; } - FMT_CONSTEXPR unsigned long long map(unsigned long long val) { return val; } - FMT_CONSTEXPR bool map(bool val) { return val; } - - template <typename T, FMT_ENABLE_IF(is_char<T>::value)> - FMT_CONSTEXPR char_type map(T val) { - static_assert( - std::is_same<T, char>::value || std::is_same<T, char_type>::value, - "mixing character types is disallowed"); - return val; - } - - FMT_CONSTEXPR double map(float val) { return static_cast<double>(val); } - FMT_CONSTEXPR double map(double val) { return val; } - FMT_CONSTEXPR long double map(long double val) { return val; } - - FMT_CONSTEXPR const char_type* map(char_type* val) { return val; } - FMT_CONSTEXPR const char_type* map(const char_type* val) { return val; } - template <typename T, FMT_ENABLE_IF(is_string<T>::value)> - FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) { - static_assert(std::is_same<char_type, char_t<T>>::value, - "mixing character types is disallowed"); - return to_string_view(val); - } - template <typename T, - FMT_ENABLE_IF( - std::is_constructible<basic_string_view<char_type>, T>::value && - !is_string<T>::value)> - FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) { - return basic_string_view<char_type>(val); - } - FMT_CONSTEXPR const char* map(const signed char* val) { - static_assert(std::is_same<char_type, char>::value, "invalid string type"); - return reinterpret_cast<const char*>(val); - } - FMT_CONSTEXPR const char* map(const unsigned char* val) { - static_assert(std::is_same<char_type, char>::value, "invalid string type"); - return reinterpret_cast<const char*>(val); - } - - FMT_CONSTEXPR const void* map(void* val) { return val; } - FMT_CONSTEXPR const void* map(const void* val) { return val; } - FMT_CONSTEXPR const void* map(std::nullptr_t val) { return val; } - template <typename T> FMT_CONSTEXPR int map(const T*) { - // Formatting of arbitrary pointers is disallowed. If you want to output - // a pointer cast it to "void *" or "const void *". In particular, this - // forbids formatting of "[const] volatile char *" which is printed as bool - // by iostreams. - static_assert(!sizeof(T), "formatting of non-void pointers is disallowed"); - return 0; - } - - template <typename T, - FMT_ENABLE_IF(std::is_enum<T>::value && - !has_formatter<T, Context>::value && - !has_fallback_formatter<T, Context>::value)> - FMT_CONSTEXPR int map(const T& val) { - return static_cast<int>(val); - } - template <typename T, - FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value && - (has_formatter<T, Context>::value || - has_fallback_formatter<T, Context>::value))> - FMT_CONSTEXPR const T& map(const T& val) { - return val; - } - - template <typename T> - FMT_CONSTEXPR const named_arg_base<char_type>& map( - const named_arg<T, char_type>& val) { - auto arg = make_arg<Context>(val.value); - std::memcpy(val.data, &arg, sizeof(arg)); - return val; - } -}; - -// A type constant after applying arg_mapper<Context>. -template <typename T, typename Context> -using mapped_type_constant = - type_constant<decltype(arg_mapper<Context>().map(std::declval<T>())), - typename Context::char_type>; - -// Maximum number of arguments with packed types. -enum { max_packed_args = 15 }; -enum : unsigned long long { is_unpacked_bit = 1ull << 63 }; - -template <typename Context> class arg_map; -} // namespace internal - -// A formatting argument. It is a trivially copyable/constructible type to -// allow storage in basic_memory_buffer. -template <typename Context> class basic_format_arg { - private: - internal::value<Context> value_; - internal::type type_; - - template <typename ContextType, typename T> - friend FMT_CONSTEXPR basic_format_arg<ContextType> internal::make_arg( - const T& value); - - template <typename Visitor, typename Ctx> - friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, - const basic_format_arg<Ctx>& arg) - -> decltype(vis(0)); - - friend class basic_format_args<Context>; - friend class internal::arg_map<Context>; - - using char_type = typename Context::char_type; - - public: - class handle { - public: - explicit handle(internal::custom_value<Context> custom) : custom_(custom) {} - - void format(basic_parse_context<char_type>& parse_ctx, Context& ctx) const { - custom_.format(custom_.value, parse_ctx, ctx); - } - - private: - internal::custom_value<Context> custom_; - }; - - FMT_CONSTEXPR basic_format_arg() : type_(internal::none_type) {} - - FMT_CONSTEXPR explicit operator bool() const FMT_NOEXCEPT { - return type_ != internal::none_type; - } - - internal::type type() const { return type_; } - - bool is_integral() const { return internal::is_integral(type_); } - bool is_arithmetic() const { return internal::is_arithmetic(type_); } -}; - -/** - \rst - Visits an argument dispatching to the appropriate visit method based on - the argument type. For example, if the argument type is ``double`` then - ``vis(value)`` will be called with the value of type ``double``. - \endrst - */ -template <typename Visitor, typename Context> -FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, - const basic_format_arg<Context>& arg) - -> decltype(vis(0)) { - using char_type = typename Context::char_type; - switch (arg.type_) { - case internal::none_type: - break; - case internal::named_arg_type: - FMT_ASSERT(false, "invalid argument type"); - break; - case internal::int_type: - return vis(arg.value_.int_value); - case internal::uint_type: - return vis(arg.value_.uint_value); - case internal::long_long_type: - return vis(arg.value_.long_long_value); - case internal::ulong_long_type: - return vis(arg.value_.ulong_long_value); - case internal::bool_type: - return vis(arg.value_.bool_value); - case internal::char_type: - return vis(arg.value_.char_value); - case internal::double_type: - return vis(arg.value_.double_value); - case internal::long_double_type: - return vis(arg.value_.long_double_value); - case internal::cstring_type: - return vis(arg.value_.string.data); - case internal::string_type: - return vis(basic_string_view<char_type>(arg.value_.string.data, - arg.value_.string.size)); - case internal::pointer_type: - return vis(arg.value_.pointer); - case internal::custom_type: - return vis(typename basic_format_arg<Context>::handle(arg.value_.custom)); - } - return vis(monostate()); -} - -namespace internal { -// A map from argument names to their values for named arguments. -template <typename Context> class arg_map { - private: - arg_map(const arg_map&) = delete; - void operator=(const arg_map&) = delete; - - using char_type = typename Context::char_type; - - struct entry { - basic_string_view<char_type> name; - basic_format_arg<Context> arg; - }; - - entry* map_; - unsigned size_; - - void push_back(value<Context> val) { - const auto& named = *val.named_arg; - map_[size_] = {named.name, named.template deserialize<Context>()}; - ++size_; - } - - public: - arg_map() : map_(nullptr), size_(0) {} - void init(const basic_format_args<Context>& args); - ~arg_map() { delete[] map_; } - - basic_format_arg<Context> find(basic_string_view<char_type> name) const { - // The list is unsorted, so just return the first matching name. - for (entry *it = map_, *end = map_ + size_; it != end; ++it) { - if (it->name == name) return it->arg; - } - return {}; - } -}; - -// A type-erased reference to an std::locale to avoid heavy <locale> include. -class locale_ref { - private: - const void* locale_; // A type-erased pointer to std::locale. - - public: - locale_ref() : locale_(nullptr) {} - template <typename Locale> explicit locale_ref(const Locale& loc); - - template <typename Locale> Locale get() const; -}; - -template <typename> constexpr unsigned long long encode_types() { return 0; } - -template <typename Context, typename Arg, typename... Args> -constexpr unsigned long long encode_types() { - return mapped_type_constant<Arg, Context>::value | - (encode_types<Context, Args...>() << 4); -} - -template <typename Context, typename T> -FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value) { - basic_format_arg<Context> arg; - arg.type_ = mapped_type_constant<T, Context>::value; - arg.value_ = arg_mapper<Context>().map(value); - return arg; -} - -template <bool IS_PACKED, typename Context, typename T, - FMT_ENABLE_IF(IS_PACKED)> -inline value<Context> make_arg(const T& val) { - return arg_mapper<Context>().map(val); -} - -template <bool IS_PACKED, typename Context, typename T, - FMT_ENABLE_IF(!IS_PACKED)> -inline basic_format_arg<Context> make_arg(const T& value) { - return make_arg<Context>(value); -} -} // namespace internal - -// Formatting context. -template <typename OutputIt, typename Char> class basic_format_context { - public: - /** The character type for the output. */ - using char_type = Char; - - private: - OutputIt out_; - basic_format_args<basic_format_context> args_; - internal::arg_map<basic_format_context> map_; - internal::locale_ref loc_; - - basic_format_context(const basic_format_context&) = delete; - void operator=(const basic_format_context&) = delete; - - public: - using iterator = OutputIt; - using format_arg = basic_format_arg<basic_format_context>; - template <typename T> using formatter_type = formatter<T, char_type>; - - /** - Constructs a ``basic_format_context`` object. References to the arguments are - stored in the object so make sure they have appropriate lifetimes. - */ - basic_format_context(OutputIt out, - basic_format_args<basic_format_context> ctx_args, - internal::locale_ref loc = internal::locale_ref()) - : out_(out), args_(ctx_args), loc_(loc) {} - - format_arg arg(int id) const { return args_.get(id); } - - // Checks if manual indexing is used and returns the argument with the - // specified name. - format_arg arg(basic_string_view<char_type> name); - - internal::error_handler error_handler() { return {}; } - void on_error(const char* message) { error_handler().on_error(message); } - - // Returns an iterator to the beginning of the output range. - iterator out() { return out_; } - - // Advances the begin iterator to ``it``. - void advance_to(iterator it) { out_ = it; } - - internal::locale_ref locale() { return loc_; } -}; - -template <typename Char> -using buffer_context = - basic_format_context<std::back_insert_iterator<internal::buffer<Char>>, - Char>; -using format_context = buffer_context<char>; -using wformat_context = buffer_context<wchar_t>; - -/** - \rst - An array of references to arguments. It can be implicitly converted into - `~fmt::basic_format_args` for passing into type-erased formatting functions - such as `~fmt::vformat`. - \endrst - */ -template <typename Context, typename... Args> class format_arg_store { - private: - static const size_t num_args = sizeof...(Args); - static const bool is_packed = num_args < internal::max_packed_args; - - using value_type = conditional_t<is_packed, internal::value<Context>, - basic_format_arg<Context>>; - - // If the arguments are not packed, add one more element to mark the end. - value_type data_[num_args + (!is_packed || num_args == 0 ? 1 : 0)]; - - friend class basic_format_args<Context>; - - public: - static constexpr unsigned long long types = - is_packed ? internal::encode_types<Context, Args...>() - : internal::is_unpacked_bit | num_args; - FMT_DEPRECATED static constexpr unsigned long long TYPES = types; - - format_arg_store(const Args&... args) - : data_{internal::make_arg<is_packed, Context>(args)...} {} -}; - -/** - \rst - Constructs an `~fmt::format_arg_store` object that contains references to - arguments and can be implicitly converted to `~fmt::format_args`. `Context` - can be omitted in which case it defaults to `~fmt::context`. - See `~fmt::arg` for lifetime considerations. - \endrst - */ -template <typename Context = format_context, typename... Args> -inline format_arg_store<Context, Args...> make_format_args( - const Args&... args) { - return {args...}; -} - -/** Formatting arguments. */ -template <typename Context> class basic_format_args { - public: - using size_type = int; - using format_arg = basic_format_arg<Context>; - - private: - // To reduce compiled code size per formatting function call, types of first - // max_packed_args arguments are passed in the types_ field. - unsigned long long types_; - union { - // If the number of arguments is less than max_packed_args, the argument - // values are stored in values_, otherwise they are stored in args_. - // This is done to reduce compiled code size as storing larger objects - // may require more code (at least on x86-64) even if the same amount of - // data is actually copied to stack. It saves ~10% on the bloat test. - const internal::value<Context>* values_; - const format_arg* args_; - }; - - bool is_packed() const { return (types_ & internal::is_unpacked_bit) == 0; } - - internal::type type(int index) const { - int shift = index * 4; - return static_cast<internal::type>((types_ & (0xfull << shift)) >> shift); - } - - friend class internal::arg_map<Context>; - - void set_data(const internal::value<Context>* values) { values_ = values; } - void set_data(const format_arg* args) { args_ = args; } - - format_arg do_get(int index) const { - format_arg arg; - if (!is_packed()) { - auto num_args = max_size(); - if (index < num_args) arg = args_[index]; - return arg; - } - if (index > internal::max_packed_args) return arg; - arg.type_ = type(index); - if (arg.type_ == internal::none_type) return arg; - internal::value<Context>& val = arg.value_; - val = values_[index]; - return arg; - } - - public: - basic_format_args() : types_(0) {} - - /** - \rst - Constructs a `basic_format_args` object from `~fmt::format_arg_store`. - \endrst - */ - template <typename... Args> - basic_format_args(const format_arg_store<Context, Args...>& store) - : types_(static_cast<unsigned long long>(store.types)) { - set_data(store.data_); - } - - /** - \rst - Constructs a `basic_format_args` object from a dynamic set of arguments. - \endrst - */ - basic_format_args(const format_arg* args, int count) - : types_(internal::is_unpacked_bit | internal::to_unsigned(count)) { - set_data(args); - } - - /** Returns the argument at specified index. */ - format_arg get(int index) const { - format_arg arg = do_get(index); - if (arg.type_ == internal::named_arg_type) - arg = arg.value_.named_arg->template deserialize<Context>(); - return arg; - } - - int max_size() const { - unsigned long long max_packed = internal::max_packed_args; - return static_cast<int>(is_packed() ? max_packed - : types_ & ~internal::is_unpacked_bit); - } -}; - -/** An alias to ``basic_format_args<context>``. */ -// It is a separate type rather than an alias to make symbols readable. -struct format_args : basic_format_args<format_context> { - template <typename... Args> - format_args(Args&&... args) - : basic_format_args<format_context>(std::forward<Args>(args)...) {} -}; -struct wformat_args : basic_format_args<wformat_context> { - template <typename... Args> - wformat_args(Args&&... args) - : basic_format_args<wformat_context>(std::forward<Args>(args)...) {} -}; - -template <typename Container> struct is_contiguous : std::false_type {}; - -template <typename Char> -struct is_contiguous<std::basic_string<Char>> : std::true_type {}; - -template <typename Char> -struct is_contiguous<internal::buffer<Char>> : std::true_type {}; - -namespace internal { - -template <typename OutputIt> -struct is_contiguous_back_insert_iterator : std::false_type {}; -template <typename Container> -struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>> - : is_contiguous<Container> {}; - -template <typename Char> struct named_arg_base { - basic_string_view<Char> name; - - // Serialized value<context>. - mutable char data[sizeof(basic_format_arg<buffer_context<Char>>)]; - - named_arg_base(basic_string_view<Char> nm) : name(nm) {} - - template <typename Context> basic_format_arg<Context> deserialize() const { - basic_format_arg<Context> arg; - std::memcpy(&arg, data, sizeof(basic_format_arg<Context>)); - return arg; - } -}; - -template <typename T, typename Char> struct named_arg : named_arg_base<Char> { - const T& value; - - named_arg(basic_string_view<Char> name, const T& val) - : named_arg_base<Char>(name), value(val) {} -}; - -template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)> -inline void check_format_string(const S&) { -#if defined(FMT_ENFORCE_COMPILE_STRING) - static_assert(is_compile_string<S>::value, - "FMT_ENFORCE_COMPILE_STRING requires all format strings to " - "utilize FMT_STRING() or fmt()."); -#endif -} -template <typename..., typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> -void check_format_string(S); - -struct view {}; -template <bool...> struct bool_pack; -template <bool... Args> -using all_true = - std::is_same<bool_pack<Args..., true>, bool_pack<true, Args...>>; - -template <typename... Args, typename S, typename Char = char_t<S>> -inline format_arg_store<buffer_context<Char>, remove_reference_t<Args>...> -make_args_checked(const S& format_str, - const remove_reference_t<Args>&... args) { - static_assert(all_true<(!std::is_base_of<view, remove_reference_t<Args>>() || - !std::is_reference<Args>())...>::value, - "passing views as lvalues is disallowed"); - check_format_string<remove_const_t<remove_reference_t<Args>>...>(format_str); - return {args...}; -} - -template <typename Char> -std::basic_string<Char> vformat(basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args); - -template <typename Char> -typename buffer_context<Char>::iterator vformat_to( - buffer<Char>& buf, basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args); -} // namespace internal - -/** - \rst - Returns a named argument to be used in a formatting function. - - The named argument holds a reference and does not extend the lifetime - of its arguments. - Consequently, a dangling reference can accidentally be created. - The user should take care to only pass this function temporaries when - the named argument is itself a temporary, as per the following example. - - **Example**:: - - fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23)); - \endrst - */ -template <typename S, typename T, typename Char = char_t<S>> -inline internal::named_arg<T, Char> arg(const S& name, const T& arg) { - static_assert(internal::is_string<S>::value, ""); - return {name, arg}; -} - -// Disable nested named arguments, e.g. ``arg("a", arg("b", 42))``. -template <typename S, typename T, typename Char> -void arg(S, internal::named_arg<T, Char>) = delete; - -/** Formats a string and writes the output to ``out``. */ -// GCC 8 and earlier cannot handle std::back_insert_iterator<Container> with -// vformat_to<ArgFormatter>(...) overload, so SFINAE on iterator type instead. -template <typename OutputIt, typename S, typename Char = char_t<S>, - FMT_ENABLE_IF( - internal::is_contiguous_back_insert_iterator<OutputIt>::value)> -OutputIt vformat_to(OutputIt out, const S& format_str, - basic_format_args<buffer_context<Char>> args) { - using container = remove_reference_t<decltype(internal::get_container(out))>; - internal::container_buffer<container> buf((internal::get_container(out))); - internal::vformat_to(buf, to_string_view(format_str), args); - return out; -} - -template <typename Container, typename S, typename... Args, - FMT_ENABLE_IF( - is_contiguous<Container>::value&& internal::is_string<S>::value)> -inline std::back_insert_iterator<Container> format_to( - std::back_insert_iterator<Container> out, const S& format_str, - Args&&... args) { - return vformat_to( - out, to_string_view(format_str), - {internal::make_args_checked<Args...>(format_str, args...)}); -} - -template <typename S, typename Char = char_t<S>> -inline std::basic_string<Char> vformat( - const S& format_str, basic_format_args<buffer_context<Char>> args) { - return internal::vformat(to_string_view(format_str), args); -} - -/** - \rst - Formats arguments and returns the result as a string. - - **Example**:: - - #include <fmt/core.h> - std::string message = fmt::format("The answer is {}", 42); - \endrst -*/ -// Pass char_t as a default template parameter instead of using -// std::basic_string<char_t<S>> to reduce the symbol size. -template <typename S, typename... Args, typename Char = char_t<S>> -inline std::basic_string<Char> format(const S& format_str, Args&&... args) { - return internal::vformat( - to_string_view(format_str), - {internal::make_args_checked<Args...>(format_str, args...)}); -} - -FMT_API void vprint(std::FILE* f, string_view format_str, format_args args); -FMT_API void vprint(std::FILE* f, wstring_view format_str, wformat_args args); - -/** - \rst - Prints formatted data to the file *f*. For wide format strings, - *f* should be in wide-oriented mode set via ``fwide(f, 1)`` or - ``_setmode(_fileno(f), _O_U8TEXT)`` on Windows. - - **Example**:: - - fmt::print(stderr, "Don't {}!", "panic"); - \endrst - */ -template <typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value)> -inline void print(std::FILE* f, const S& format_str, Args&&... args) { - vprint(f, to_string_view(format_str), - internal::make_args_checked<Args...>(format_str, args...)); -} - -FMT_API void vprint(string_view format_str, format_args args); -FMT_API void vprint(wstring_view format_str, wformat_args args); - -/** - \rst - Prints formatted data to ``stdout``. - - **Example**:: - - fmt::print("Elapsed time: {0:.2f} seconds", 1.23); - \endrst - */ -template <typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value)> -inline void print(const S& format_str, Args&&... args) { - vprint(to_string_view(format_str), - internal::make_args_checked<Args...>(format_str, args...)); -} -FMT_END_NAMESPACE - -#endif // FMT_CORE_H_ diff --git a/deps/fmt/fmt/format-inl.h b/deps/fmt/fmt/format-inl.h deleted file mode 100644 index 147062fe5d..0000000000 --- a/deps/fmt/fmt/format-inl.h +++ /dev/null @@ -1,1000 +0,0 @@ -// Formatting library for C++ -// -// Copyright (c) 2012 - 2016, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_FORMAT_INL_H_ -#define FMT_FORMAT_INL_H_ - -#include "format.h" - -#include <string.h> - -#include <cctype> -#include <cerrno> -#include <climits> -#include <cmath> -#include <cstdarg> -#include <cstddef> // for std::ptrdiff_t -#include <cstring> // for std::memmove -#include <cwchar> -#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) -# include <locale> -#endif - -#if FMT_USE_WINDOWS_H -# if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN) -# define WIN32_LEAN_AND_MEAN -# endif -# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) -# include <windows.h> -# else -# define NOMINMAX -# include <windows.h> -# undef NOMINMAX -# endif -#endif - -#if FMT_EXCEPTIONS -# define FMT_TRY try -# define FMT_CATCH(x) catch (x) -#else -# define FMT_TRY if (true) -# define FMT_CATCH(x) if (false) -#endif - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable : 4127) // conditional expression is constant -# pragma warning(disable : 4702) // unreachable code -// Disable deprecation warning for strerror. The latter is not called but -// MSVC fails to detect it. -# pragma warning(disable : 4996) -#endif - -// Dummy implementations of strerror_r and strerror_s called if corresponding -// system functions are not available. -inline fmt::internal::null<> strerror_r(int, char*, ...) { - return fmt::internal::null<>(); -} -inline fmt::internal::null<> strerror_s(char*, std::size_t, ...) { - return fmt::internal::null<>(); -} - -FMT_BEGIN_NAMESPACE -namespace internal { - -#ifndef _MSC_VER -# define FMT_SNPRINTF snprintf -#else // _MSC_VER -inline int fmt_snprintf(char* buffer, size_t size, const char* format, ...) { - va_list args; - va_start(args, format); - int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); - va_end(args); - return result; -} -# define FMT_SNPRINTF fmt_snprintf -#endif // _MSC_VER - -using format_func = void (*)(internal::buffer<char>&, int, string_view); - -// Portable thread-safe version of strerror. -// Sets buffer to point to a string describing the error code. -// This can be either a pointer to a string stored in buffer, -// or a pointer to some static immutable string. -// Returns one of the following values: -// 0 - success -// ERANGE - buffer is not large enough to store the error message -// other - failure -// Buffer should be at least of size 1. -FMT_FUNC int safe_strerror(int error_code, char*& buffer, - std::size_t buffer_size) FMT_NOEXCEPT { - FMT_ASSERT(buffer != nullptr && buffer_size != 0, "invalid buffer"); - - class dispatcher { - private: - int error_code_; - char*& buffer_; - std::size_t buffer_size_; - - // A noop assignment operator to avoid bogus warnings. - void operator=(const dispatcher&) {} - - // Handle the result of XSI-compliant version of strerror_r. - int handle(int result) { - // glibc versions before 2.13 return result in errno. - return result == -1 ? errno : result; - } - - // Handle the result of GNU-specific version of strerror_r. - int handle(char* message) { - // If the buffer is full then the message is probably truncated. - if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) - return ERANGE; - buffer_ = message; - return 0; - } - - // Handle the case when strerror_r is not available. - int handle(internal::null<>) { - return fallback(strerror_s(buffer_, buffer_size_, error_code_)); - } - - // Fallback to strerror_s when strerror_r is not available. - int fallback(int result) { - // If the buffer is full then the message is probably truncated. - return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE - : result; - } - -#if !FMT_MSC_VER - // Fallback to strerror if strerror_r and strerror_s are not available. - int fallback(internal::null<>) { - errno = 0; - buffer_ = strerror(error_code_); - return errno; - } -#endif - - public: - dispatcher(int err_code, char*& buf, std::size_t buf_size) - : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} - - int run() { return handle(strerror_r(error_code_, buffer_, buffer_size_)); } - }; - return dispatcher(error_code, buffer, buffer_size).run(); -} - -FMT_FUNC void format_error_code(internal::buffer<char>& out, int error_code, - string_view message) FMT_NOEXCEPT { - // Report error code making sure that the output fits into - // inline_buffer_size to avoid dynamic memory allocation and potential - // bad_alloc. - out.resize(0); - static const char SEP[] = ": "; - static const char ERROR_STR[] = "error "; - // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. - std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; - auto abs_value = static_cast<uint32_or_64_t<int>>(error_code); - if (internal::is_negative(error_code)) { - abs_value = 0 - abs_value; - ++error_code_size; - } - error_code_size += internal::to_unsigned(internal::count_digits(abs_value)); - internal::writer w(out); - if (message.size() <= inline_buffer_size - error_code_size) { - w.write(message); - w.write(SEP); - } - w.write(ERROR_STR); - w.write(error_code); - assert(out.size() <= inline_buffer_size); -} - -// A wrapper around fwrite that throws on error. -FMT_FUNC void fwrite_fully(const void* ptr, size_t size, size_t count, - FILE* stream) { - size_t written = std::fwrite(ptr, size, count, stream); - if (written < count) { - FMT_THROW(system_error(errno, "cannot write to file")); - } -} - -FMT_FUNC void report_error(format_func func, int error_code, - string_view message) FMT_NOEXCEPT { - memory_buffer full_message; - func(full_message, error_code, message); - // Don't use fwrite_fully because the latter may throw. - (void)std::fwrite(full_message.data(), full_message.size(), 1, stderr); - std::fputc('\n', stderr); -} -} // namespace internal - -#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) -namespace internal { - -template <typename Locale> -locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { - static_assert(std::is_same<Locale, std::locale>::value, ""); -} - -template <typename Locale> Locale locale_ref::get() const { - static_assert(std::is_same<Locale, std::locale>::value, ""); - return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale(); -} - -template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref loc) { - return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) - .thousands_sep(); -} -template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) { - return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) - .decimal_point(); -} -} // namespace internal -#else -template <typename Char> -FMT_FUNC Char internal::thousands_sep_impl(locale_ref) { - return FMT_STATIC_THOUSANDS_SEPARATOR; -} -template <typename Char> -FMT_FUNC Char internal::decimal_point_impl(locale_ref) { - return '.'; -} -#endif - -FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT {} -FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT {} - -FMT_FUNC void system_error::init(int err_code, string_view format_str, - format_args args) { - error_code_ = err_code; - memory_buffer buffer; - format_system_error(buffer, err_code, vformat(format_str, args)); - std::runtime_error& base = *this; - base = std::runtime_error(to_string(buffer)); -} - -namespace internal { - -template <> FMT_FUNC int count_digits<4>(internal::fallback_uintptr n) { - // Assume little endian; pointer formatting is implementation-defined anyway. - int i = static_cast<int>(sizeof(void*)) - 1; - while (i > 0 && n.value[i] == 0) --i; - auto char_digits = std::numeric_limits<unsigned char>::digits / 4; - return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1; -} - -template <typename T> -int format_float(char* buf, std::size_t size, const char* format, int precision, - T value) { -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - if (precision > 100000) - throw std::runtime_error( - "fuzz mode - avoid large allocation inside snprintf"); -#endif - // Suppress the warning about nonliteral format string. - auto snprintf_ptr = FMT_SNPRINTF; - return precision < 0 ? snprintf_ptr(buf, size, format, value) - : snprintf_ptr(buf, size, format, precision, value); -} - -template <typename T> -const char basic_data<T>::digits[] = - "0001020304050607080910111213141516171819" - "2021222324252627282930313233343536373839" - "4041424344454647484950515253545556575859" - "6061626364656667686970717273747576777879" - "8081828384858687888990919293949596979899"; - -template <typename T> -const char basic_data<T>::hex_digits[] = "0123456789abcdef"; - -#define FMT_POWERS_OF_10(factor) \ - factor * 10, factor * 100, factor * 1000, factor * 10000, factor * 100000, \ - factor * 1000000, factor * 10000000, factor * 100000000, \ - factor * 1000000000 - -template <typename T> -const uint64_t basic_data<T>::powers_of_10_64[] = { - 1, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ull), - 10000000000000000000ull}; - -template <typename T> -const uint32_t basic_data<T>::zero_or_powers_of_10_32[] = {0, - FMT_POWERS_OF_10(1)}; - -template <typename T> -const uint64_t basic_data<T>::zero_or_powers_of_10_64[] = { - 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ull), - 10000000000000000000ull}; - -// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. -// These are generated by support/compute-powers.py. -template <typename T> -const uint64_t basic_data<T>::pow10_significands[] = { - 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, - 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, - 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, - 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, - 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, - 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, - 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, - 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, - 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, - 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, - 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, - 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, - 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, - 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, - 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, - 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, - 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, - 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, - 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, - 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, - 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, - 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, - 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, - 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, - 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, - 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, - 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, - 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, - 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, -}; - -// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding -// to significands above. -template <typename T> -const int16_t basic_data<T>::pow10_exponents[] = { - -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, - -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, - -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, - -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, - -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, - 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, - 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, - 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; - -template <typename T> -const char basic_data<T>::foreground_color[] = "\x1b[38;2;"; -template <typename T> -const char basic_data<T>::background_color[] = "\x1b[48;2;"; -template <typename T> const char basic_data<T>::reset_color[] = "\x1b[0m"; -template <typename T> const wchar_t basic_data<T>::wreset_color[] = L"\x1b[0m"; - -template <typename T> struct bits { - static FMT_CONSTEXPR_DECL const int value = - static_cast<int>(sizeof(T) * std::numeric_limits<unsigned char>::digits); -}; - -// A handmade floating-point number f * pow(2, e). -class fp { - private: - using significand_type = uint64_t; - - // All sizes are in bits. - // Subtract 1 to account for an implicit most significant bit in the - // normalized form. - static FMT_CONSTEXPR_DECL const int double_significand_size = - std::numeric_limits<double>::digits - 1; - static FMT_CONSTEXPR_DECL const uint64_t implicit_bit = - 1ull << double_significand_size; - - public: - significand_type f; - int e; - - static FMT_CONSTEXPR_DECL const int significand_size = - bits<significand_type>::value; - - fp() : f(0), e(0) {} - fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} - - // Constructs fp from an IEEE754 double. It is a template to prevent compile - // errors on platforms where double is not IEEE754. - template <typename Double> explicit fp(Double d) { - // Assume double is in the format [sign][exponent][significand]. - using limits = std::numeric_limits<Double>; - const int exponent_size = - bits<Double>::value - double_significand_size - 1; // -1 for sign - const uint64_t significand_mask = implicit_bit - 1; - const uint64_t exponent_mask = (~0ull >> 1) & ~significand_mask; - const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1; - auto u = bit_cast<uint64_t>(d); - auto biased_e = (u & exponent_mask) >> double_significand_size; - f = u & significand_mask; - if (biased_e != 0) - f += implicit_bit; - else - biased_e = 1; // Subnormals use biased exponent 1 (min exponent). - e = static_cast<int>(biased_e - exponent_bias - double_significand_size); - } - - // Normalizes the value converted from double and multiplied by (1 << SHIFT). - template <int SHIFT = 0> void normalize() { - // Handle subnormals. - auto shifted_implicit_bit = implicit_bit << SHIFT; - while ((f & shifted_implicit_bit) == 0) { - f <<= 1; - --e; - } - // Subtract 1 to account for hidden bit. - auto offset = significand_size - double_significand_size - SHIFT - 1; - f <<= offset; - e -= offset; - } - - // Compute lower and upper boundaries (m^- and m^+ in the Grisu paper), where - // a boundary is a value half way between the number and its predecessor - // (lower) or successor (upper). The upper boundary is normalized and lower - // has the same exponent but may be not normalized. - void compute_boundaries(fp& lower, fp& upper) const { - lower = - f == implicit_bit ? fp((f << 2) - 1, e - 2) : fp((f << 1) - 1, e - 1); - upper = fp((f << 1) + 1, e - 1); - upper.normalize<1>(); // 1 is to account for the exponent shift above. - lower.f <<= lower.e - upper.e; - lower.e = upper.e; - } -}; - -// Returns an fp number representing x - y. Result may not be normalized. -inline fp operator-(fp x, fp y) { - FMT_ASSERT(x.f >= y.f && x.e == y.e, "invalid operands"); - return fp(x.f - y.f, x.e); -} - -// Computes an fp number r with r.f = x.f * y.f / pow(2, 64) rounded to nearest -// with half-up tie breaking, r.e = x.e + y.e + 64. Result may not be -// normalized. -FMT_FUNC fp operator*(fp x, fp y) { - int exp = x.e + y.e + 64; -#if FMT_USE_INT128 - auto product = static_cast<__uint128_t>(x.f) * y.f; - auto f = static_cast<uint64_t>(product >> 64); - if ((static_cast<uint64_t>(product) & (1ULL << 63)) != 0) ++f; - return fp(f, exp); -#else - // Multiply 32-bit parts of significands. - uint64_t mask = (1ULL << 32) - 1; - uint64_t a = x.f >> 32, b = x.f & mask; - uint64_t c = y.f >> 32, d = y.f & mask; - uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; - // Compute mid 64-bit of result and round. - uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); - return fp(ac + (ad >> 32) + (bc >> 32) + (mid >> 32), exp); -#endif -} - -// Returns cached power (of 10) c_k = c_k.f * pow(2, c_k.e) such that its -// (binary) exponent satisfies min_exponent <= c_k.e <= min_exponent + 28. -FMT_FUNC fp get_cached_power(int min_exponent, int& pow10_exponent) { - const double one_over_log2_10 = 0.30102999566398114; // 1 / log2(10) - int index = static_cast<int>( - std::ceil((min_exponent + fp::significand_size - 1) * one_over_log2_10)); - // Decimal exponent of the first (smallest) cached power of 10. - const int first_dec_exp = -348; - // Difference between 2 consecutive decimal exponents in cached powers of 10. - const int dec_exp_step = 8; - index = (index - first_dec_exp - 1) / dec_exp_step + 1; - pow10_exponent = first_dec_exp + index * dec_exp_step; - return fp(data::pow10_significands[index], data::pow10_exponents[index]); -} - -enum round_direction { unknown, up, down }; - -// Given the divisor (normally a power of 10), the remainder = v % divisor for -// some number v and the error, returns whether v should be rounded up, down, or -// whether the rounding direction can't be determined due to error. -// error should be less than divisor / 2. -inline round_direction get_round_direction(uint64_t divisor, uint64_t remainder, - uint64_t error) { - FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow. - FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow. - FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow. - // Round down if (remainder + error) * 2 <= divisor. - if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2) - return down; - // Round up if (remainder - error) * 2 >= divisor. - if (remainder >= error && - remainder - error >= divisor - (remainder - error)) { - return up; - } - return unknown; -} - -namespace digits { -enum result { - more, // Generate more digits. - done, // Done generating digits. - error // Digit generation cancelled due to an error. -}; -} - -// Generates output using the Grisu digit-gen algorithm. -// error: the size of the region (lower, upper) outside of which numbers -// definitely do not round to value (Delta in Grisu3). -template <typename Handler> -digits::result grisu_gen_digits(fp value, uint64_t error, int& exp, - Handler& handler) { - fp one(1ull << -value.e, value.e); - // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be - // zero because it contains a product of two 64-bit numbers with MSB set (due - // to normalization) - 1, shifted right by at most 60 bits. - uint32_t integral = static_cast<uint32_t>(value.f >> -one.e); - FMT_ASSERT(integral != 0, ""); - FMT_ASSERT(integral == value.f >> -one.e, ""); - // The fractional part of scaled value (p2 in Grisu) c = value % one. - uint64_t fractional = value.f & (one.f - 1); - exp = count_digits(integral); // kappa in Grisu. - // Divide by 10 to prevent overflow. - auto result = handler.on_start(data::powers_of_10_64[exp - 1] << -one.e, - value.f / 10, error * 10, exp); - if (result != digits::more) return result; - // Generate digits for the integral part. This can produce up to 10 digits. - do { - uint32_t digit = 0; - // This optimization by miloyip reduces the number of integer divisions by - // one per iteration. - switch (exp) { - case 10: - digit = integral / 1000000000; - integral %= 1000000000; - break; - case 9: - digit = integral / 100000000; - integral %= 100000000; - break; - case 8: - digit = integral / 10000000; - integral %= 10000000; - break; - case 7: - digit = integral / 1000000; - integral %= 1000000; - break; - case 6: - digit = integral / 100000; - integral %= 100000; - break; - case 5: - digit = integral / 10000; - integral %= 10000; - break; - case 4: - digit = integral / 1000; - integral %= 1000; - break; - case 3: - digit = integral / 100; - integral %= 100; - break; - case 2: - digit = integral / 10; - integral %= 10; - break; - case 1: - digit = integral; - integral = 0; - break; - default: - FMT_ASSERT(false, "invalid number of digits"); - } - --exp; - uint64_t remainder = - (static_cast<uint64_t>(integral) << -one.e) + fractional; - result = handler.on_digit(static_cast<char>('0' + digit), - data::powers_of_10_64[exp] << -one.e, remainder, - error, exp, true); - if (result != digits::more) return result; - } while (exp > 0); - // Generate digits for the fractional part. - for (;;) { - fractional *= 10; - error *= 10; - char digit = - static_cast<char>('0' + static_cast<char>(fractional >> -one.e)); - fractional &= one.f - 1; - --exp; - result = handler.on_digit(digit, one.f, fractional, error, exp, false); - if (result != digits::more) return result; - } -} - -// The fixed precision digit handler. -struct fixed_handler { - char* buf; - int size; - int precision; - int exp10; - bool fixed; - - digits::result on_start(uint64_t divisor, uint64_t remainder, uint64_t error, - int& exp) { - // Non-fixed formats require at least one digit and no precision adjustment. - if (!fixed) return digits::more; - // Adjust fixed precision by exponent because it is relative to decimal - // point. - precision += exp + exp10; - // Check if precision is satisfied just by leading zeros, e.g. - // format("{:.2f}", 0.001) gives "0.00" without generating any digits. - if (precision > 0) return digits::more; - if (precision < 0) return digits::done; - auto dir = get_round_direction(divisor, remainder, error); - if (dir == unknown) return digits::error; - buf[size++] = dir == up ? '1' : '0'; - return digits::done; - } - - digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder, - uint64_t error, int, bool integral) { - FMT_ASSERT(remainder < divisor, ""); - buf[size++] = digit; - if (size < precision) return digits::more; - if (!integral) { - // Check if error * 2 < divisor with overflow prevention. - // The check is not needed for the integral part because error = 1 - // and divisor > (1 << 32) there. - if (error >= divisor || error >= divisor - error) return digits::error; - } else { - FMT_ASSERT(error == 1 && divisor > 2, ""); - } - auto dir = get_round_direction(divisor, remainder, error); - if (dir != up) return dir == down ? digits::done : digits::error; - ++buf[size - 1]; - for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { - buf[i] = '0'; - ++buf[i - 1]; - } - if (buf[0] > '9') { - buf[0] = '1'; - buf[size++] = '0'; - } - return digits::done; - } -}; - -// The shortest representation digit handler. -template <int GRISU_VERSION> struct grisu_shortest_handler { - char* buf; - int size; - // Distance between scaled value and upper bound (wp_W in Grisu3). - uint64_t diff; - - digits::result on_start(uint64_t, uint64_t, uint64_t, int&) { - return digits::more; - } - - // Decrement the generated number approaching value from above. - void round(uint64_t d, uint64_t divisor, uint64_t& remainder, - uint64_t error) { - while ( - remainder < d && error - remainder >= divisor && - (remainder + divisor < d || d - remainder >= remainder + divisor - d)) { - --buf[size - 1]; - remainder += divisor; - } - } - - // Implements Grisu's round_weed. - digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder, - uint64_t error, int exp, bool integral) { - buf[size++] = digit; - if (remainder >= error) return digits::more; - if (GRISU_VERSION != 3) { - uint64_t d = integral ? diff : diff * data::powers_of_10_64[-exp]; - round(d, divisor, remainder, error); - return digits::done; - } - uint64_t unit = integral ? 1 : data::powers_of_10_64[-exp]; - uint64_t up = (diff - 1) * unit; // wp_Wup - round(up, divisor, remainder, error); - uint64_t down = (diff + 1) * unit; // wp_Wdown - if (remainder < down && error - remainder >= divisor && - (remainder + divisor < down || - down - remainder > remainder + divisor - down)) { - return digits::error; - } - return 2 * unit <= remainder && remainder <= error - 4 * unit - ? digits::done - : digits::error; - } -}; - -template <typename Double, - enable_if_t<(sizeof(Double) == sizeof(uint64_t)), int>> -FMT_API bool grisu_format(Double value, buffer<char>& buf, int precision, - unsigned options, int& exp) { - FMT_ASSERT(value >= 0, "value is negative"); - bool fixed = (options & grisu_options::fixed) != 0; - if (value <= 0) { // <= instead of == to silence a warning. - if (precision <= 0 || !fixed) { - exp = 0; - buf.push_back('0'); - } else { - exp = -precision; - buf.resize(precision); - std::uninitialized_fill_n(buf.data(), precision, '0'); - } - return true; - } - - fp fp_value(value); - const int min_exp = -60; // alpha in Grisu. - int cached_exp10 = 0; // K in Grisu. - if (precision != -1) { - if (precision > 17) return false; - fp_value.normalize(); - auto cached_pow = get_cached_power( - min_exp - (fp_value.e + fp::significand_size), cached_exp10); - fp_value = fp_value * cached_pow; - fixed_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; - if (grisu_gen_digits(fp_value, 1, exp, handler) == digits::error) - return false; - buf.resize(to_unsigned(handler.size)); - } else { - fp lower, upper; // w^- and w^+ in the Grisu paper. - fp_value.compute_boundaries(lower, upper); - // Find a cached power of 10 such that multiplying upper by it will bring - // the exponent in the range [min_exp, -32]. - auto cached_pow = get_cached_power( // \tilde{c}_{-k} in Grisu. - min_exp - (upper.e + fp::significand_size), cached_exp10); - fp_value.normalize(); - fp_value = fp_value * cached_pow; - lower = lower * cached_pow; // \tilde{M}^- in Grisu. - upper = upper * cached_pow; // \tilde{M}^+ in Grisu. - assert(min_exp <= upper.e && upper.e <= -32); - auto result = digits::result(); - int size = 0; - if ((options & grisu_options::grisu3) != 0) { - --lower.f; // \tilde{M}^- - 1 ulp -> M^-_{\downarrow}. - ++upper.f; // \tilde{M}^+ + 1 ulp -> M^+_{\uparrow}. - // Numbers outside of (lower, upper) definitely do not round to value. - grisu_shortest_handler<3> handler{buf.data(), 0, (upper - fp_value).f}; - result = grisu_gen_digits(upper, upper.f - lower.f, exp, handler); - size = handler.size; - } else { - ++lower.f; // \tilde{M}^- + 1 ulp -> M^-_{\uparrow}. - --upper.f; // \tilde{M}^+ - 1 ulp -> M^+_{\downarrow}. - grisu_shortest_handler<2> handler{buf.data(), 0, (upper - fp_value).f}; - result = grisu_gen_digits(upper, upper.f - lower.f, exp, handler); - size = handler.size; - } - if (result == digits::error) return false; - buf.resize(to_unsigned(size)); - } - exp -= cached_exp10; - return true; -} - -template <typename Double> -char* sprintf_format(Double value, internal::buffer<char>& buf, - sprintf_specs specs) { - // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail. - FMT_ASSERT(buf.capacity() != 0, "empty buffer"); - - // Build format string. - enum { max_format_size = 10 }; // longest format: %#-*.*Lg - char format[max_format_size]; - char* format_ptr = format; - *format_ptr++ = '%'; - if (specs.alt || !specs.type) *format_ptr++ = '#'; - if (specs.precision >= 0) { - *format_ptr++ = '.'; - *format_ptr++ = '*'; - } - if (std::is_same<Double, long double>::value) *format_ptr++ = 'L'; - - char type = specs.type; - - if (type == '%') - type = 'f'; - else if (type == 0 || type == 'n') - type = 'g'; -#if FMT_MSC_VER - if (type == 'F') { - // MSVC's printf doesn't support 'F'. - type = 'f'; - } -#endif - *format_ptr++ = type; - *format_ptr = '\0'; - - // Format using snprintf. - char* start = nullptr; - char* decimal_point_pos = nullptr; - for (;;) { - std::size_t buffer_size = buf.capacity(); - start = &buf[0]; - int result = - format_float(start, buffer_size, format, specs.precision, value); - if (result >= 0) { - unsigned n = internal::to_unsigned(result); - if (n < buf.capacity()) { - // Find the decimal point. - auto p = buf.data(), end = p + n; - if (*p == '+' || *p == '-') ++p; - if (specs.type != 'a' && specs.type != 'A') { - while (p < end && *p >= '0' && *p <= '9') ++p; - if (p < end && *p != 'e' && *p != 'E') { - decimal_point_pos = p; - if (!specs.type) { - // Keep only one trailing zero after the decimal point. - ++p; - if (*p == '0') ++p; - while (p != end && *p >= '1' && *p <= '9') ++p; - char* where = p; - while (p != end && *p == '0') ++p; - if (p == end || *p < '0' || *p > '9') { - if (p != end) std::memmove(where, p, to_unsigned(end - p)); - n -= static_cast<unsigned>(p - where); - } - } - } - } - buf.resize(n); - break; // The buffer is large enough - continue with formatting. - } - buf.reserve(n + 1); - } else { - // If result is negative we ask to increase the capacity by at least 1, - // but as std::vector, the buffer grows exponentially. - buf.reserve(buf.capacity() + 1); - } - } - return decimal_point_pos; -} -} // namespace internal - -#if FMT_USE_WINDOWS_H - -FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) { - static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; - if (s.size() > INT_MAX) - FMT_THROW(windows_error(ERROR_INVALID_PARAMETER, ERROR_MSG)); - int s_size = static_cast<int>(s.size()); - if (s_size == 0) { - // MultiByteToWideChar does not support zero length, handle separately. - buffer_.resize(1); - buffer_[0] = 0; - return; - } - - int length = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), - s_size, nullptr, 0); - if (length == 0) FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); - buffer_.resize(length + 1); - length = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, - &buffer_[0], length); - if (length == 0) FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); - buffer_[length] = 0; -} - -FMT_FUNC internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) { - if (int error_code = convert(s)) { - FMT_THROW(windows_error(error_code, - "cannot convert string from UTF-16 to UTF-8")); - } -} - -FMT_FUNC int internal::utf16_to_utf8::convert(wstring_view s) { - if (s.size() > INT_MAX) return ERROR_INVALID_PARAMETER; - int s_size = static_cast<int>(s.size()); - if (s_size == 0) { - // WideCharToMultiByte does not support zero length, handle separately. - buffer_.resize(1); - buffer_[0] = 0; - return 0; - } - - int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, nullptr, 0, - nullptr, nullptr); - if (length == 0) return GetLastError(); - buffer_.resize(length + 1); - length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, &buffer_[0], - length, nullptr, nullptr); - if (length == 0) return GetLastError(); - buffer_[length] = 0; - return 0; -} - -FMT_FUNC void windows_error::init(int err_code, string_view format_str, - format_args args) { - error_code_ = err_code; - memory_buffer buffer; - internal::format_windows_error(buffer, err_code, vformat(format_str, args)); - std::runtime_error& base = *this; - base = std::runtime_error(to_string(buffer)); -} - -FMT_FUNC void internal::format_windows_error(internal::buffer<char>& out, - int error_code, - string_view message) FMT_NOEXCEPT { - FMT_TRY { - wmemory_buffer buf; - buf.resize(inline_buffer_size); - for (;;) { - wchar_t* system_message = &buf[0]; - int result = FormatMessageW( - FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, - error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), system_message, - static_cast<uint32_t>(buf.size()), nullptr); - if (result != 0) { - utf16_to_utf8 utf8_message; - if (utf8_message.convert(system_message) == ERROR_SUCCESS) { - internal::writer w(out); - w.write(message); - w.write(": "); - w.write(utf8_message); - return; - } - break; - } - if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) - break; // Can't get error message, report error code instead. - buf.resize(buf.size() * 2); - } - } - FMT_CATCH(...) {} - format_error_code(out, error_code, message); -} - -#endif // FMT_USE_WINDOWS_H - -FMT_FUNC void format_system_error(internal::buffer<char>& out, int error_code, - string_view message) FMT_NOEXCEPT { - FMT_TRY { - memory_buffer buf; - buf.resize(inline_buffer_size); - for (;;) { - char* system_message = &buf[0]; - int result = - internal::safe_strerror(error_code, system_message, buf.size()); - if (result == 0) { - internal::writer w(out); - w.write(message); - w.write(": "); - w.write(system_message); - return; - } - if (result != ERANGE) - break; // Can't get error message, report error code instead. - buf.resize(buf.size() * 2); - } - } - FMT_CATCH(...) {} - format_error_code(out, error_code, message); -} - -FMT_FUNC void internal::error_handler::on_error(const char* message) { - FMT_THROW(format_error(message)); -} - -FMT_FUNC void report_system_error(int error_code, - fmt::string_view message) FMT_NOEXCEPT { - report_error(format_system_error, error_code, message); -} - -#if FMT_USE_WINDOWS_H -FMT_FUNC void report_windows_error(int error_code, - fmt::string_view message) FMT_NOEXCEPT { - report_error(internal::format_windows_error, error_code, message); -} -#endif - -FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { - memory_buffer buffer; - internal::vformat_to(buffer, format_str, - basic_format_args<buffer_context<char>>(args)); - internal::fwrite_fully(buffer.data(), 1, buffer.size(), f); -} - -FMT_FUNC void vprint(std::FILE* f, wstring_view format_str, wformat_args args) { - wmemory_buffer buffer; - internal::vformat_to(buffer, format_str, args); - buffer.push_back(L'\0'); - if (std::fputws(buffer.data(), f) == -1) { - FMT_THROW(system_error(errno, "cannot write to file")); - } -} - -FMT_FUNC void vprint(string_view format_str, format_args args) { - vprint(stdout, format_str, args); -} - -FMT_FUNC void vprint(wstring_view format_str, wformat_args args) { - vprint(stdout, format_str, args); -} - -FMT_END_NAMESPACE - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -#endif // FMT_FORMAT_INL_H_ diff --git a/deps/fmt/fmt/format.cc b/deps/fmt/fmt/format.cc deleted file mode 100644 index 41076f1633..0000000000 --- a/deps/fmt/fmt/format.cc +++ /dev/null @@ -1,57 +0,0 @@ -// Formatting library for C++ -// -// Copyright (c) 2012 - 2016, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#include "fmt/format-inl.h" - -FMT_BEGIN_NAMESPACE -template struct FMT_API internal::basic_data<void>; - -// Workaround a bug in MSVC2013 that prevents instantiation of grisu_format. -bool (*instantiate_grisu_format)(double, internal::buffer<char>&, int, unsigned, - int&) = internal::grisu_format; - -#ifndef FMT_STATIC_THOUSANDS_SEPARATOR -template FMT_API internal::locale_ref::locale_ref(const std::locale& loc); -template FMT_API std::locale internal::locale_ref::get<std::locale>() const; -#endif - -// Explicit instantiations for char. - -template FMT_API char internal::thousands_sep_impl(locale_ref); -template FMT_API char internal::decimal_point_impl(locale_ref); - -template FMT_API void internal::buffer<char>::append(const char*, const char*); - -template FMT_API void internal::arg_map<format_context>::init( - const basic_format_args<format_context>& args); - -template FMT_API std::string internal::vformat<char>( - string_view, basic_format_args<format_context>); - -template FMT_API format_context::iterator internal::vformat_to( - internal::buffer<char>&, string_view, basic_format_args<format_context>); - -template FMT_API char* internal::sprintf_format(double, internal::buffer<char>&, - sprintf_specs); -template FMT_API char* internal::sprintf_format(long double, - internal::buffer<char>&, - sprintf_specs); - -// Explicit instantiations for wchar_t. - -template FMT_API wchar_t internal::thousands_sep_impl(locale_ref); -template FMT_API wchar_t internal::decimal_point_impl(locale_ref); - -template FMT_API void internal::buffer<wchar_t>::append(const wchar_t*, - const wchar_t*); - -template FMT_API void internal::arg_map<wformat_context>::init( - const basic_format_args<wformat_context>&); - -template FMT_API std::wstring internal::vformat<wchar_t>( - wstring_view, basic_format_args<wformat_context>); -FMT_END_NAMESPACE diff --git a/deps/fmt/fmt/format.h b/deps/fmt/fmt/format.h deleted file mode 100644 index e03462b50c..0000000000 --- a/deps/fmt/fmt/format.h +++ /dev/null @@ -1,3593 +0,0 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - present, Victor Zverovich - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR - ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef FMT_FORMAT_H_ -#define FMT_FORMAT_H_ - -#include <algorithm> -#include <cassert> -#include <cmath> -#include <cstdint> -#include <cstring> -#include <iterator> -#include <limits> -#include <memory> -#include <stdexcept> - -#include "core.h" - -#ifdef __clang__ -# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) -#else -# define FMT_CLANG_VERSION 0 -#endif - -#ifdef __INTEL_COMPILER -# define FMT_ICC_VERSION __INTEL_COMPILER -#elif defined(__ICL) -# define FMT_ICC_VERSION __ICL -#else -# define FMT_ICC_VERSION 0 -#endif - -#ifdef __NVCC__ -# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__) -#else -# define FMT_CUDA_VERSION 0 -#endif - -#ifdef __has_builtin -# define FMT_HAS_BUILTIN(x) __has_builtin(x) -#else -# define FMT_HAS_BUILTIN(x) 0 -#endif - -#ifndef FMT_THROW -# if FMT_EXCEPTIONS -# if FMT_MSC_VER -FMT_BEGIN_NAMESPACE -namespace internal { -template <typename Exception> inline void do_throw(const Exception& x) { - // Silence unreachable code warnings in MSVC because these are nearly - // impossible to fix in a generic code. - volatile bool b = true; - if (b) throw x; -} -} // namespace internal -FMT_END_NAMESPACE -# define FMT_THROW(x) fmt::internal::do_throw(x) -# else -# define FMT_THROW(x) throw x -# endif -# else -# define FMT_THROW(x) \ - do { \ - static_cast<void>(sizeof(x)); \ - assert(false); \ - } while (false) -# endif -#endif - -#ifndef FMT_USE_USER_DEFINED_LITERALS -// For Intel and NVIDIA compilers both they and the system gcc/msc support UDLs. -# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ - FMT_MSC_VER >= 1900) && \ - (!(FMT_ICC_VERSION || FMT_CUDA_VERSION) || FMT_ICC_VERSION >= 1500 || \ - FMT_CUDA_VERSION >= 700) -# define FMT_USE_USER_DEFINED_LITERALS 1 -# else -# define FMT_USE_USER_DEFINED_LITERALS 0 -# endif -#endif - -#ifndef FMT_USE_UDL_TEMPLATE -// EDG front end based compilers (icc, nvcc) do not support UDL templates yet -// and GCC 9 warns about them. -# if FMT_USE_USER_DEFINED_LITERALS && FMT_ICC_VERSION == 0 && \ - FMT_CUDA_VERSION == 0 && \ - ((FMT_GCC_VERSION >= 600 && FMT_GCC_VERSION <= 900 && \ - __cplusplus >= 201402L) || \ - FMT_CLANG_VERSION >= 304) -# define FMT_USE_UDL_TEMPLATE 1 -# else -# define FMT_USE_UDL_TEMPLATE 0 -# endif -#endif - -#ifdef FMT_USE_INT128 -// Do nothing. -#elif defined(__SIZEOF_INT128__) -# define FMT_USE_INT128 1 -#else -# define FMT_USE_INT128 0 -#endif - -// __builtin_clz is broken in clang with Microsoft CodeGen: -// https://github.com/fmtlib/fmt/issues/519 -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clz)) && !FMT_MSC_VER -# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) -#endif -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clzll)) && !FMT_MSC_VER -# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) -#endif - -// Some compilers masquerade as both MSVC and GCC-likes or otherwise support -// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the -// MSVC intrinsics if the clz and clzll builtins are not available. -#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(_MANAGED) -# include <intrin.h> // _BitScanReverse, _BitScanReverse64 - -FMT_BEGIN_NAMESPACE -namespace internal { -// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. -# ifndef __clang__ -# pragma intrinsic(_BitScanReverse) -# endif -inline uint32_t clz(uint32_t x) { - unsigned long r = 0; - _BitScanReverse(&r, x); - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress : 6102) - return 31 - r; -} -# define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n) - -# if defined(_WIN64) && !defined(__clang__) -# pragma intrinsic(_BitScanReverse64) -# endif - -inline uint32_t clzll(uint64_t x) { - unsigned long r = 0; -# ifdef _WIN64 - _BitScanReverse64(&r, x); -# else - // Scan the high 32 bits. - if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 - (r + 32); - - // Scan the low 32 bits. - _BitScanReverse(&r, static_cast<uint32_t>(x)); -# endif - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress : 6102) - return 63 - r; -} -# define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n) -} // namespace internal -FMT_END_NAMESPACE -#endif - -FMT_BEGIN_NAMESPACE -namespace internal { - -// A fallback implementation of uintptr_t for systems that lack it. -struct fallback_uintptr { - unsigned char value[sizeof(void*)]; -}; -#ifdef UINTPTR_MAX -using uintptr_t = ::uintptr_t; -#else -using uintptr_t = fallback_uintptr; -#endif - -// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't produce -// undefined behavior (e.g. due to type aliasing). -// Example: uint64_t d = bit_cast<uint64_t>(2.718); -template <typename Dest, typename Source> -inline Dest bit_cast(const Source& source) { - static_assert(sizeof(Dest) == sizeof(Source), "size mismatch"); - Dest dest; - std::memcpy(&dest, &source, sizeof(dest)); - return dest; -} - -// An approximation of iterator_t for pre-C++20 systems. -template <typename T> -using iterator_t = decltype(std::begin(std::declval<T&>())); - -// Detect the iterator category of *any* given type in a SFINAE-friendly way. -// Unfortunately, older implementations of std::iterator_traits are not safe -// for use in a SFINAE-context. -template <typename It, typename Enable = void> -struct iterator_category : std::false_type {}; - -template <typename T> struct iterator_category<T*> { - using type = std::random_access_iterator_tag; -}; - -template <typename It> -struct iterator_category<It, void_t<typename It::iterator_category>> { - using type = typename It::iterator_category; -}; - -// Detect if *any* given type models the OutputIterator concept. -template <typename It> class is_output_iterator { - // Check for mutability because all iterator categories derived from - // std::input_iterator_tag *may* also meet the requirements of an - // OutputIterator, thereby falling into the category of 'mutable iterators' - // [iterator.requirements.general] clause 4. The compiler reveals this - // property only at the point of *actually dereferencing* the iterator! - template <typename U> - static decltype(*(std::declval<U>())) test(std::input_iterator_tag); - template <typename U> static char& test(std::output_iterator_tag); - template <typename U> static const char& test(...); - - using type = decltype(test<It>(typename iterator_category<It>::type{})); - - public: - static const bool value = !std::is_const<remove_reference_t<type>>::value; -}; - -// A workaround for std::string not having mutable data() until C++17. -template <typename Char> inline Char* get_data(std::basic_string<Char>& s) { - return &s[0]; -} -template <typename Container> -inline typename Container::value_type* get_data(Container& c) { - return c.data(); -} - -#ifdef _SECURE_SCL -// Make a checked iterator to avoid MSVC warnings. -template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>; -template <typename T> checked_ptr<T> make_checked(T* p, std::size_t size) { - return {p, size}; -} -#else -template <typename T> using checked_ptr = T*; -template <typename T> inline T* make_checked(T* p, std::size_t) { return p; } -#endif - -template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> -inline checked_ptr<typename Container::value_type> reserve( - std::back_insert_iterator<Container>& it, std::size_t n) { - Container& c = get_container(it); - std::size_t size = c.size(); - c.resize(size + n); - return make_checked(get_data(c) + size, n); -} - -template <typename Iterator> -inline Iterator& reserve(Iterator& it, std::size_t) { - return it; -} - -// An output iterator that counts the number of objects written to it and -// discards them. -template <typename T> class counting_iterator { - private: - std::size_t count_; - mutable T blackhole_; - - public: - using iterator_category = std::output_iterator_tag; - using value_type = T; - using difference_type = std::ptrdiff_t; - using pointer = T*; - using reference = T&; - using _Unchecked_type = counting_iterator; // Mark iterator as checked. - - counting_iterator() : count_(0) {} - - std::size_t count() const { return count_; } - - counting_iterator& operator++() { - ++count_; - return *this; - } - - counting_iterator operator++(int) { - auto it = *this; - ++*this; - return it; - } - - T& operator*() const { return blackhole_; } -}; - -template <typename OutputIt> class truncating_iterator_base { - protected: - OutputIt out_; - std::size_t limit_; - std::size_t count_; - - truncating_iterator_base(OutputIt out, std::size_t limit) - : out_(out), limit_(limit), count_(0) {} - - public: - using iterator_category = std::output_iterator_tag; - using difference_type = void; - using pointer = void; - using reference = void; - using _Unchecked_type = - truncating_iterator_base; // Mark iterator as checked. - - OutputIt base() const { return out_; } - std::size_t count() const { return count_; } -}; - -// An output iterator that truncates the output and counts the number of objects -// written to it. -template <typename OutputIt, - typename Enable = typename std::is_void< - typename std::iterator_traits<OutputIt>::value_type>::type> -class truncating_iterator; - -template <typename OutputIt> -class truncating_iterator<OutputIt, std::false_type> - : public truncating_iterator_base<OutputIt> { - using traits = std::iterator_traits<OutputIt>; - - mutable typename traits::value_type blackhole_; - - public: - using value_type = typename traits::value_type; - - truncating_iterator(OutputIt out, std::size_t limit) - : truncating_iterator_base<OutputIt>(out, limit) {} - - truncating_iterator& operator++() { - if (this->count_++ < this->limit_) ++this->out_; - return *this; - } - - truncating_iterator operator++(int) { - auto it = *this; - ++*this; - return it; - } - - value_type& operator*() const { - return this->count_ < this->limit_ ? *this->out_ : blackhole_; - } -}; - -template <typename OutputIt> -class truncating_iterator<OutputIt, std::true_type> - : public truncating_iterator_base<OutputIt> { - public: - using value_type = typename OutputIt::container_type::value_type; - - truncating_iterator(OutputIt out, std::size_t limit) - : truncating_iterator_base<OutputIt>(out, limit) {} - - truncating_iterator& operator=(value_type val) { - if (this->count_++ < this->limit_) this->out_ = val; - return *this; - } - - truncating_iterator& operator++() { return *this; } - truncating_iterator& operator++(int) { return *this; } - truncating_iterator& operator*() { return *this; } -}; - -// A range with the specified output iterator and value type. -template <typename OutputIt, typename T = typename OutputIt::value_type> -class output_range { - private: - OutputIt it_; - - public: - using value_type = T; - using iterator = OutputIt; - struct sentinel {}; - - explicit output_range(OutputIt it) : it_(it) {} - OutputIt begin() const { return it_; } - sentinel end() const { return {}; } // Sentinel is not used yet. -}; - -// A range with an iterator appending to a buffer. -template <typename T> -class buffer_range - : public output_range<std::back_insert_iterator<buffer<T>>, T> { - public: - using iterator = std::back_insert_iterator<buffer<T>>; - using output_range<iterator, T>::output_range; - buffer_range(buffer<T>& buf) - : output_range<iterator, T>(std::back_inserter(buf)) {} -}; - -template <typename Char> -inline size_t count_code_points(basic_string_view<Char> s) { - return s.size(); -} - -// Counts the number of code points in a UTF-8 string. -inline size_t count_code_points(basic_string_view<char8_t> s) { - const char8_t* data = s.data(); - size_t num_code_points = 0; - for (size_t i = 0, size = s.size(); i != size; ++i) { - if ((data[i] & 0xc0) != 0x80) ++num_code_points; - } - return num_code_points; -} - -inline char8_t to_char8_t(char c) { return static_cast<char8_t>(c); } - -template <typename InputIt, typename OutChar> -using needs_conversion = bool_constant< - std::is_same<typename std::iterator_traits<InputIt>::value_type, - char>::value && - std::is_same<OutChar, char8_t>::value>; - -template <typename OutChar, typename InputIt, typename OutputIt, - FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)> -OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { - return std::copy(begin, end, it); -} - -template <typename OutChar, typename InputIt, typename OutputIt, - FMT_ENABLE_IF(needs_conversion<InputIt, OutChar>::value)> -OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { - return std::transform(begin, end, it, to_char8_t); -} - -#ifndef FMT_USE_GRISU -# define FMT_USE_GRISU 1 -#endif - -template <typename T> constexpr bool use_grisu() { - return FMT_USE_GRISU && std::numeric_limits<double>::is_iec559 && - sizeof(T) <= sizeof(double); -} - -template <typename T> -template <typename U> -void buffer<T>::append(const U* begin, const U* end) { - std::size_t new_size = size_ + to_unsigned(end - begin); - reserve(new_size); - std::uninitialized_copy(begin, end, make_checked(ptr_, capacity_) + size_); - size_ = new_size; -} -} // namespace internal - -// A UTF-8 string view. -class u8string_view : public basic_string_view<char8_t> { - public: - u8string_view(const char* s) - : basic_string_view<char8_t>(reinterpret_cast<const char8_t*>(s)) {} - u8string_view(const char* s, size_t count) FMT_NOEXCEPT - : basic_string_view<char8_t>(reinterpret_cast<const char8_t*>(s), count) { - } -}; - -#if FMT_USE_USER_DEFINED_LITERALS -inline namespace literals { -inline u8string_view operator"" _u(const char* s, std::size_t n) { - return {s, n}; -} -} // namespace literals -#endif - -// The number of characters to store in the basic_memory_buffer object itself -// to avoid dynamic memory allocation. -enum { inline_buffer_size = 500 }; - -/** - \rst - A dynamically growing memory buffer for trivially copyable/constructible types - with the first ``SIZE`` elements stored in the object itself. - - You can use one of the following type aliases for common character types: - - +----------------+------------------------------+ - | Type | Definition | - +================+==============================+ - | memory_buffer | basic_memory_buffer<char> | - +----------------+------------------------------+ - | wmemory_buffer | basic_memory_buffer<wchar_t> | - +----------------+------------------------------+ - - **Example**:: - - fmt::memory_buffer out; - format_to(out, "The answer is {}.", 42); - - This will append the following output to the ``out`` object: - - .. code-block:: none - - The answer is 42. - - The output can be converted to an ``std::string`` with ``to_string(out)``. - \endrst - */ -template <typename T, std::size_t SIZE = inline_buffer_size, - typename Allocator = std::allocator<T>> -class basic_memory_buffer : private Allocator, public internal::buffer<T> { - private: - T store_[SIZE]; - - // Deallocate memory allocated by the buffer. - void deallocate() { - T* data = this->data(); - if (data != store_) Allocator::deallocate(data, this->capacity()); - } - - protected: - void grow(std::size_t size) FMT_OVERRIDE; - - public: - using value_type = T; - using const_reference = const T&; - - explicit basic_memory_buffer(const Allocator& alloc = Allocator()) - : Allocator(alloc) { - this->set(store_, SIZE); - } - ~basic_memory_buffer() { deallocate(); } - - private: - // Move data from other to this buffer. - void move(basic_memory_buffer& other) { - Allocator &this_alloc = *this, &other_alloc = other; - this_alloc = std::move(other_alloc); - T* data = other.data(); - std::size_t size = other.size(), capacity = other.capacity(); - if (data == other.store_) { - this->set(store_, capacity); - std::uninitialized_copy(other.store_, other.store_ + size, - internal::make_checked(store_, capacity)); - } else { - this->set(data, capacity); - // Set pointer to the inline array so that delete is not called - // when deallocating. - other.set(other.store_, 0); - } - this->resize(size); - } - - public: - /** - \rst - Constructs a :class:`fmt::basic_memory_buffer` object moving the content - of the other object to it. - \endrst - */ - basic_memory_buffer(basic_memory_buffer&& other) { move(other); } - - /** - \rst - Moves the content of the other ``basic_memory_buffer`` object to this one. - \endrst - */ - basic_memory_buffer& operator=(basic_memory_buffer&& other) { - assert(this != &other); - deallocate(); - move(other); - return *this; - } - - // Returns a copy of the allocator associated with this buffer. - Allocator get_allocator() const { return *this; } -}; - -template <typename T, std::size_t SIZE, typename Allocator> -void basic_memory_buffer<T, SIZE, Allocator>::grow(std::size_t size) { -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - if (size > 1000) throw std::runtime_error("fuzz mode - won't grow that much"); -#endif - std::size_t old_capacity = this->capacity(); - std::size_t new_capacity = old_capacity + old_capacity / 2; - if (size > new_capacity) new_capacity = size; - T* old_data = this->data(); - T* new_data = std::allocator_traits<Allocator>::allocate(*this, new_capacity); - // The following code doesn't throw, so the raw pointer above doesn't leak. - std::uninitialized_copy(old_data, old_data + this->size(), - internal::make_checked(new_data, new_capacity)); - this->set(new_data, new_capacity); - // deallocate must not throw according to the standard, but even if it does, - // the buffer already uses the new storage and will deallocate it in - // destructor. - if (old_data != store_) Allocator::deallocate(old_data, old_capacity); -} - -using memory_buffer = basic_memory_buffer<char>; -using wmemory_buffer = basic_memory_buffer<wchar_t>; - -/** A formatting error such as invalid format string. */ -class FMT_API format_error : public std::runtime_error { - public: - explicit format_error(const char* message) : std::runtime_error(message) {} - explicit format_error(const std::string& message) - : std::runtime_error(message) {} - ~format_error() FMT_NOEXCEPT; -}; - -namespace internal { - -// Returns true if value is negative, false otherwise. -// Same as `value < 0` but doesn't produce warnings if T is an unsigned type. -template <typename T, FMT_ENABLE_IF(std::numeric_limits<T>::is_signed)> -FMT_CONSTEXPR bool is_negative(T value) { - return value < 0; -} -template <typename T, FMT_ENABLE_IF(!std::numeric_limits<T>::is_signed)> -FMT_CONSTEXPR bool is_negative(T) { - return false; -} - -// Smallest of uint32_t and uint64_t that is large enough to represent all -// values of T. -template <typename T> -using uint32_or_64_t = - conditional_t<std::numeric_limits<T>::digits <= 32, uint32_t, uint64_t>; - -// Static data is placed in this class template for the header-only config. -template <typename T = void> struct FMT_EXTERN_TEMPLATE_API basic_data { - static const uint64_t powers_of_10_64[]; - static const uint32_t zero_or_powers_of_10_32[]; - static const uint64_t zero_or_powers_of_10_64[]; - static const uint64_t pow10_significands[]; - static const int16_t pow10_exponents[]; - static const char digits[]; - static const char hex_digits[]; - static const char foreground_color[]; - static const char background_color[]; - static const char reset_color[5]; - static const wchar_t wreset_color[5]; -}; - -FMT_EXTERN template struct basic_data<void>; - -// This is a struct rather than an alias to avoid shadowing warnings in gcc. -struct data : basic_data<> {}; - -#ifdef FMT_BUILTIN_CLZLL -// Returns the number of decimal digits in n. Leading zeros are not counted -// except for n == 0 in which case count_digits returns 1. -inline int count_digits(uint64_t n) { - // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 - // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits. - int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12; - return t - (n < data::zero_or_powers_of_10_64[t]) + 1; -} -#else -// Fallback version of count_digits used when __builtin_clz is not available. -inline int count_digits(uint64_t n) { - int count = 1; - for (;;) { - // Integer division is slow so do it for a group of four digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - if (n < 10) return count; - if (n < 100) return count + 1; - if (n < 1000) return count + 2; - if (n < 10000) return count + 3; - n /= 10000u; - count += 4; - } -} -#endif - -// Counts the number of digits in n. BITS = log2(radix). -template <unsigned BITS, typename UInt> inline int count_digits(UInt n) { - int num_digits = 0; - do { - ++num_digits; - } while ((n >>= BITS) != 0); - return num_digits; -} - -template <> int count_digits<4>(internal::fallback_uintptr n); - -#if FMT_HAS_CPP_ATTRIBUTE(always_inline) -# define FMT_ALWAYS_INLINE __attribute__((always_inline)) -#else -# define FMT_ALWAYS_INLINE -#endif - -template <typename Handler> -inline char* lg(uint32_t n, Handler h) FMT_ALWAYS_INLINE; - -// Computes g = floor(log10(n)) and calls h.on<g>(n); -template <typename Handler> inline char* lg(uint32_t n, Handler h) { - return n < 100 ? n < 10 ? h.template on<0>(n) : h.template on<1>(n) - : n < 1000000 - ? n < 10000 ? n < 1000 ? h.template on<2>(n) - : h.template on<3>(n) - : n < 100000 ? h.template on<4>(n) - : h.template on<5>(n) - : n < 100000000 ? n < 10000000 ? h.template on<6>(n) - : h.template on<7>(n) - : n < 1000000000 ? h.template on<8>(n) - : h.template on<9>(n); -} - -// An lg handler that formats a decimal number. -// Usage: lg(n, decimal_formatter(buffer)); -class decimal_formatter { - private: - char* buffer_; - - void write_pair(unsigned N, uint32_t index) { - std::memcpy(buffer_ + N, data::digits + index * 2, 2); - } - - public: - explicit decimal_formatter(char* buf) : buffer_(buf) {} - - template <unsigned N> char* on(uint32_t u) { - if (N == 0) { - *buffer_ = static_cast<char>(u) + '0'; - } else if (N == 1) { - write_pair(0, u); - } else { - // The idea of using 4.32 fixed-point numbers is based on - // https://github.com/jeaiii/itoa - unsigned n = N - 1; - unsigned a = n / 5 * n * 53 / 16; - uint64_t t = - ((1ULL << (32 + a)) / data::zero_or_powers_of_10_32[n] + 1 - n / 9); - t = ((t * u) >> a) + n / 5 * 4; - write_pair(0, t >> 32); - for (unsigned i = 2; i < N; i += 2) { - t = 100ULL * static_cast<uint32_t>(t); - write_pair(i, t >> 32); - } - if (N % 2 == 0) { - buffer_[N] = - static_cast<char>((10ULL * static_cast<uint32_t>(t)) >> 32) + '0'; - } - } - return buffer_ += N + 1; - } -}; - -#ifdef FMT_BUILTIN_CLZ -// Optional version of count_digits for better performance on 32-bit platforms. -inline int count_digits(uint32_t n) { - int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12; - return t - (n < data::zero_or_powers_of_10_32[t]) + 1; -} -#endif - -template <typename Char> FMT_API Char thousands_sep_impl(locale_ref loc); -template <typename Char> inline Char thousands_sep(locale_ref loc) { - return Char(thousands_sep_impl<char>(loc)); -} -template <> inline wchar_t thousands_sep(locale_ref loc) { - return thousands_sep_impl<wchar_t>(loc); -} - -template <typename Char> FMT_API Char decimal_point_impl(locale_ref loc); -template <typename Char> inline Char decimal_point(locale_ref loc) { - return Char(decimal_point_impl<char>(loc)); -} -template <> inline wchar_t decimal_point(locale_ref loc) { - return decimal_point_impl<wchar_t>(loc); -} - -// Formats a decimal unsigned integer value writing into buffer. -// add_thousands_sep is called after writing each char to add a thousands -// separator if necessary. -template <typename UInt, typename Char, typename F> -inline Char* format_decimal(Char* buffer, UInt value, int num_digits, - F add_thousands_sep) { - FMT_ASSERT(num_digits >= 0, "invalid digit count"); - buffer += num_digits; - Char* end = buffer; - while (value >= 100) { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast<unsigned>((value % 100) * 2); - value /= 100; - *--buffer = static_cast<Char>(data::digits[index + 1]); - add_thousands_sep(buffer); - *--buffer = static_cast<Char>(data::digits[index]); - add_thousands_sep(buffer); - } - if (value < 10) { - *--buffer = static_cast<Char>('0' + value); - return end; - } - unsigned index = static_cast<unsigned>(value * 2); - *--buffer = static_cast<Char>(data::digits[index + 1]); - add_thousands_sep(buffer); - *--buffer = static_cast<Char>(data::digits[index]); - return end; -} - -template <typename Char, typename UInt, typename Iterator, typename F> -inline Iterator format_decimal(Iterator out, UInt value, int num_digits, - F add_thousands_sep) { - FMT_ASSERT(num_digits >= 0, "invalid digit count"); - // Buffer should be large enough to hold all digits (<= digits10 + 1). - enum { max_size = std::numeric_limits<UInt>::digits10 + 1 }; - Char buffer[max_size + max_size / 3]; - auto end = format_decimal(buffer, value, num_digits, add_thousands_sep); - return internal::copy_str<Char>(buffer, end, out); -} - -template <typename Char, typename It, typename UInt> -inline It format_decimal(It out, UInt value, int num_digits) { - return format_decimal<Char>(out, value, num_digits, [](Char*) {}); -} - -template <unsigned BASE_BITS, typename Char, typename UInt> -inline Char* format_uint(Char* buffer, UInt value, int num_digits, - bool upper = false) { - buffer += num_digits; - Char* end = buffer; - do { - const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits; - unsigned digit = (value & ((1 << BASE_BITS) - 1)); - *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit) - : digits[digit]); - } while ((value >>= BASE_BITS) != 0); - return end; -} - -template <unsigned BASE_BITS, typename Char> -Char* format_uint(Char* buffer, internal::fallback_uintptr n, int num_digits, - bool = false) { - auto char_digits = std::numeric_limits<unsigned char>::digits / 4; - int start = (num_digits + char_digits - 1) / char_digits - 1; - if (int start_digits = num_digits % char_digits) { - unsigned value = n.value[start--]; - buffer = format_uint<BASE_BITS>(buffer, value, start_digits); - } - for (; start >= 0; --start) { - unsigned value = n.value[start]; - buffer += char_digits; - auto p = buffer; - for (int i = 0; i < char_digits; ++i) { - unsigned digit = (value & ((1 << BASE_BITS) - 1)); - *--p = static_cast<Char>(data::hex_digits[digit]); - value >>= BASE_BITS; - } - } - return buffer; -} - -template <unsigned BASE_BITS, typename Char, typename It, typename UInt> -inline It format_uint(It out, UInt value, int num_digits, bool upper = false) { - // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). - char buffer[std::numeric_limits<UInt>::digits / BASE_BITS + 1]; - format_uint<BASE_BITS>(buffer, value, num_digits, upper); - return internal::copy_str<Char>(buffer, buffer + num_digits, out); -} - -#ifndef _WIN32 -# define FMT_USE_WINDOWS_H 0 -#elif !defined(FMT_USE_WINDOWS_H) -# define FMT_USE_WINDOWS_H 1 -#endif - -// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h. -// All the functionality that relies on it will be disabled too. -#if FMT_USE_WINDOWS_H -// A converter from UTF-8 to UTF-16. -// It is only provided for Windows since other systems support UTF-8 natively. -class utf8_to_utf16 { - private: - wmemory_buffer buffer_; - - public: - FMT_API explicit utf8_to_utf16(string_view s); - operator wstring_view() const { return wstring_view(&buffer_[0], size()); } - size_t size() const { return buffer_.size() - 1; } - const wchar_t* c_str() const { return &buffer_[0]; } - std::wstring str() const { return std::wstring(&buffer_[0], size()); } -}; - -// A converter from UTF-16 to UTF-8. -// It is only provided for Windows since other systems support UTF-8 natively. -class utf16_to_utf8 { - private: - memory_buffer buffer_; - - public: - utf16_to_utf8() {} - FMT_API explicit utf16_to_utf8(wstring_view s); - operator string_view() const { return string_view(&buffer_[0], size()); } - size_t size() const { return buffer_.size() - 1; } - const char* c_str() const { return &buffer_[0]; } - std::string str() const { return std::string(&buffer_[0], size()); } - - // Performs conversion returning a system error code instead of - // throwing exception on conversion error. This method may still throw - // in case of memory allocation error. - FMT_API int convert(wstring_view s); -}; - -FMT_API void format_windows_error(fmt::internal::buffer<char>& out, - int error_code, - fmt::string_view message) FMT_NOEXCEPT; -#endif - -template <typename T = void> struct null {}; - -// Workaround an array initialization issue in gcc 4.8. -template <typename Char> struct fill_t { - private: - Char data_[6]; - - public: - FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; } - FMT_CONSTEXPR const Char& operator[](size_t index) const { - return data_[index]; - } - - static FMT_CONSTEXPR fill_t<Char> make() { - auto fill = fill_t<Char>(); - fill[0] = Char(' '); - return fill; - } -}; -} // namespace internal - -// We cannot use enum classes as bit fields because of a gcc bug -// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414. -namespace align { -enum type { none, left, right, center, numeric }; -} -using align_t = align::type; - -namespace sign { -enum type { none, minus, plus, space }; -} -using sign_t = sign::type; - -// Format specifiers for built-in and string types. -template <typename Char> struct basic_format_specs { - int width; - int precision; - char type; - align_t align : 4; - sign_t sign : 3; - bool alt : 1; // Alternate form ('#'). - internal::fill_t<Char> fill; - - constexpr basic_format_specs() - : width(0), - precision(-1), - type(0), - align(align::none), - sign(sign::none), - alt(false), - fill(internal::fill_t<Char>::make()) {} -}; - -using format_specs = basic_format_specs<char>; - -namespace internal { - -// Writes the exponent exp in the form "[+-]d{2,3}" to buffer. -template <typename Char, typename It> It write_exponent(int exp, It it) { - FMT_ASSERT(-1000 < exp && exp < 1000, "exponent out of range"); - if (exp < 0) { - *it++ = static_cast<Char>('-'); - exp = -exp; - } else { - *it++ = static_cast<Char>('+'); - } - if (exp >= 100) { - *it++ = static_cast<Char>(static_cast<char>('0' + exp / 100)); - exp %= 100; - } - const char* d = data::digits + exp * 2; - *it++ = static_cast<Char>(d[0]); - *it++ = static_cast<Char>(d[1]); - return it; -} - -struct gen_digits_params { - int num_digits; - bool fixed; - bool upper; - bool trailing_zeros; -}; - -// The number is given as v = digits * pow(10, exp). -template <typename Char, typename It> -It grisu_prettify(const char* digits, int size, int exp, It it, - gen_digits_params params, Char decimal_point) { - // pow(10, full_exp - 1) <= v <= pow(10, full_exp). - int full_exp = size + exp; - if (!params.fixed) { - // Insert a decimal point after the first digit and add an exponent. - *it++ = static_cast<Char>(*digits); - if (size > 1) *it++ = decimal_point; - exp += size - 1; - it = copy_str<Char>(digits + 1, digits + size, it); - if (size < params.num_digits) - it = std::fill_n(it, params.num_digits - size, static_cast<Char>('0')); - *it++ = static_cast<Char>(params.upper ? 'E' : 'e'); - return write_exponent<Char>(exp, it); - } - if (size <= full_exp) { - // 1234e7 -> 12340000000[.0+] - it = copy_str<Char>(digits, digits + size, it); - it = std::fill_n(it, full_exp - size, static_cast<Char>('0')); - int num_zeros = (std::max)(params.num_digits - full_exp, 1); - if (params.trailing_zeros) { - *it++ = decimal_point; -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - if (num_zeros > 1000) - throw std::runtime_error("fuzz mode - avoiding excessive cpu use"); -#endif - it = std::fill_n(it, num_zeros, static_cast<Char>('0')); - } - } else if (full_exp > 0) { - // 1234e-2 -> 12.34[0+] - it = copy_str<Char>(digits, digits + full_exp, it); - if (!params.trailing_zeros) { - // Remove trailing zeros. - while (size > full_exp && digits[size - 1] == '0') --size; - if (size != full_exp) *it++ = decimal_point; - return copy_str<Char>(digits + full_exp, digits + size, it); - } - *it++ = decimal_point; - it = copy_str<Char>(digits + full_exp, digits + size, it); - if (params.num_digits > size) { - // Add trailing zeros. - int num_zeros = params.num_digits - size; - it = std::fill_n(it, num_zeros, static_cast<Char>('0')); - } - } else { - // 1234e-6 -> 0.001234 - *it++ = static_cast<Char>('0'); - int num_zeros = -full_exp; - if (params.num_digits >= 0 && params.num_digits < num_zeros) - num_zeros = params.num_digits; - if (!params.trailing_zeros) - while (size > 0 && digits[size - 1] == '0') --size; - if (num_zeros != 0 || size != 0) { - *it++ = decimal_point; - it = std::fill_n(it, num_zeros, static_cast<Char>('0')); - it = copy_str<Char>(digits, digits + size, it); - } - } - return it; -} - -namespace grisu_options { -enum { fixed = 1, grisu3 = 2 }; -} - -// Formats value using the Grisu algorithm: -// https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf -template <typename Double, FMT_ENABLE_IF(sizeof(Double) == sizeof(uint64_t))> -FMT_API bool grisu_format(Double, buffer<char>&, int, unsigned, int&); -template <typename Double, FMT_ENABLE_IF(sizeof(Double) != sizeof(uint64_t))> -inline bool grisu_format(Double, buffer<char>&, int, unsigned, int&) { - return false; -} - -struct sprintf_specs { - int precision; - char type; - bool alt : 1; - - template <typename Char> - constexpr sprintf_specs(basic_format_specs<Char> specs) - : precision(specs.precision), type(specs.type), alt(specs.alt) {} - - constexpr bool has_precision() const { return precision >= 0; } -}; - -template <typename Double> -char* sprintf_format(Double, internal::buffer<char>&, sprintf_specs); - -template <typename Handler> -FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) { - switch (spec) { - case 0: - case 'd': - handler.on_dec(); - break; - case 'x': - case 'X': - handler.on_hex(); - break; - case 'b': - case 'B': - handler.on_bin(); - break; - case 'o': - handler.on_oct(); - break; - case 'n': - handler.on_num(); - break; - default: - handler.on_error(); - } -} - -template <typename Handler> -FMT_CONSTEXPR void handle_float_type_spec(char spec, Handler&& handler) { - switch (spec) { - case 0: - case 'g': - case 'G': - handler.on_general(); - break; - case 'e': - case 'E': - handler.on_exp(); - break; - case 'f': - case 'F': - handler.on_fixed(); - break; - case '%': - handler.on_percent(); - break; - case 'a': - case 'A': - handler.on_hex(); - break; - case 'n': - handler.on_num(); - break; - default: - handler.on_error(); - break; - } -} - -template <typename Char, typename Handler> -FMT_CONSTEXPR void handle_char_specs(const basic_format_specs<Char>* specs, - Handler&& handler) { - if (!specs) return handler.on_char(); - if (specs->type && specs->type != 'c') return handler.on_int(); - if (specs->align == align::numeric || specs->sign != sign::none || specs->alt) - handler.on_error("invalid format specifier for char"); - handler.on_char(); -} - -template <typename Char, typename Handler> -FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) { - if (spec == 0 || spec == 's') - handler.on_string(); - else if (spec == 'p') - handler.on_pointer(); - else - handler.on_error("invalid type specifier"); -} - -template <typename Char, typename ErrorHandler> -FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) { - if (spec != 0 && spec != 's') eh.on_error("invalid type specifier"); -} - -template <typename Char, typename ErrorHandler> -FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) { - if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier"); -} - -template <typename ErrorHandler> class int_type_checker : private ErrorHandler { - public: - FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {} - - FMT_CONSTEXPR void on_dec() {} - FMT_CONSTEXPR void on_hex() {} - FMT_CONSTEXPR void on_bin() {} - FMT_CONSTEXPR void on_oct() {} - FMT_CONSTEXPR void on_num() {} - - FMT_CONSTEXPR void on_error() { - ErrorHandler::on_error("invalid type specifier"); - } -}; - -template <typename ErrorHandler> -class float_type_checker : private ErrorHandler { - public: - FMT_CONSTEXPR explicit float_type_checker(ErrorHandler eh) - : ErrorHandler(eh) {} - - FMT_CONSTEXPR void on_general() {} - FMT_CONSTEXPR void on_exp() {} - FMT_CONSTEXPR void on_fixed() {} - FMT_CONSTEXPR void on_percent() {} - FMT_CONSTEXPR void on_hex() {} - FMT_CONSTEXPR void on_num() {} - - FMT_CONSTEXPR void on_error() { - ErrorHandler::on_error("invalid type specifier"); - } -}; - -template <typename ErrorHandler> -class char_specs_checker : public ErrorHandler { - private: - char type_; - - public: - FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh) - : ErrorHandler(eh), type_(type) {} - - FMT_CONSTEXPR void on_int() { - handle_int_type_spec(type_, int_type_checker<ErrorHandler>(*this)); - } - FMT_CONSTEXPR void on_char() {} -}; - -template <typename ErrorHandler> -class cstring_type_checker : public ErrorHandler { - public: - FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh) - : ErrorHandler(eh) {} - - FMT_CONSTEXPR void on_string() {} - FMT_CONSTEXPR void on_pointer() {} -}; - -template <typename Context> -void arg_map<Context>::init(const basic_format_args<Context>& args) { - if (map_) return; - map_ = new entry[internal::to_unsigned(args.max_size())]; - if (args.is_packed()) { - for (int i = 0;; ++i) { - internal::type arg_type = args.type(i); - if (arg_type == internal::none_type) return; - if (arg_type == internal::named_arg_type) push_back(args.values_[i]); - } - } - for (int i = 0;; ++i) { - auto type = args.args_[i].type_; - if (type == internal::none_type) return; - if (type == internal::named_arg_type) push_back(args.args_[i].value_); - } -} - -// This template provides operations for formatting and writing data into a -// character range. -template <typename Range> class basic_writer { - public: - using char_type = typename Range::value_type; - using iterator = typename Range::iterator; - using format_specs = basic_format_specs<char_type>; - - private: - iterator out_; // Output iterator. - internal::locale_ref locale_; - - // Attempts to reserve space for n extra characters in the output range. - // Returns a pointer to the reserved range or a reference to out_. - auto reserve(std::size_t n) -> decltype(internal::reserve(out_, n)) { - return internal::reserve(out_, n); - } - - template <typename F> struct padded_int_writer { - size_t size_; - string_view prefix; - char_type fill; - std::size_t padding; - F f; - - size_t size() const { return size_; } - size_t width() const { return size_; } - - template <typename It> void operator()(It&& it) const { - if (prefix.size() != 0) - it = internal::copy_str<char_type>(prefix.begin(), prefix.end(), it); - it = std::fill_n(it, padding, fill); - f(it); - } - }; - - // Writes an integer in the format - // <left-padding><prefix><numeric-padding><digits><right-padding> - // where <digits> are written by f(it). - template <typename F> - void write_int(int num_digits, string_view prefix, format_specs specs, F f) { - std::size_t size = prefix.size() + internal::to_unsigned(num_digits); - char_type fill = specs.fill[0]; - std::size_t padding = 0; - if (specs.align == align::numeric) { - auto unsiged_width = internal::to_unsigned(specs.width); - if (unsiged_width > size) { - padding = unsiged_width - size; - size = unsiged_width; - } - } else if (specs.precision > num_digits) { - size = prefix.size() + internal::to_unsigned(specs.precision); - padding = internal::to_unsigned(specs.precision - num_digits); - fill = static_cast<char_type>('0'); - } - if (specs.align == align::none) specs.align = align::right; - write_padded(specs, padded_int_writer<F>{size, prefix, fill, padding, f}); - } - - // Writes a decimal integer. - template <typename Int> void write_decimal(Int value) { - auto abs_value = static_cast<uint32_or_64_t<Int>>(value); - bool is_negative = internal::is_negative(value); - if (is_negative) abs_value = 0 - abs_value; - int num_digits = internal::count_digits(abs_value); - auto&& it = - reserve((is_negative ? 1 : 0) + static_cast<size_t>(num_digits)); - if (is_negative) *it++ = static_cast<char_type>('-'); - it = internal::format_decimal<char_type>(it, abs_value, num_digits); - } - - // The handle_int_type_spec handler that writes an integer. - template <typename Int, typename Specs> struct int_writer { - using unsigned_type = uint32_or_64_t<Int>; - - basic_writer<Range>& writer; - const Specs& specs; - unsigned_type abs_value; - char prefix[4]; - unsigned prefix_size; - - string_view get_prefix() const { return string_view(prefix, prefix_size); } - - int_writer(basic_writer<Range>& w, Int value, const Specs& s) - : writer(w), - specs(s), - abs_value(static_cast<unsigned_type>(value)), - prefix_size(0) { - if (internal::is_negative(value)) { - prefix[0] = '-'; - ++prefix_size; - abs_value = 0 - abs_value; - } else if (specs.sign != sign::none && specs.sign != sign::minus) { - prefix[0] = specs.sign == sign::plus ? '+' : ' '; - ++prefix_size; - } - } - - struct dec_writer { - unsigned_type abs_value; - int num_digits; - - template <typename It> void operator()(It&& it) const { - it = internal::format_decimal<char_type>(it, abs_value, num_digits); - } - }; - - void on_dec() { - int num_digits = internal::count_digits(abs_value); - writer.write_int(num_digits, get_prefix(), specs, - dec_writer{abs_value, num_digits}); - } - - struct hex_writer { - int_writer& self; - int num_digits; - - template <typename It> void operator()(It&& it) const { - it = internal::format_uint<4, char_type>(it, self.abs_value, num_digits, - self.specs.type != 'x'); - } - }; - - void on_hex() { - if (specs.alt) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = specs.type; - } - int num_digits = internal::count_digits<4>(abs_value); - writer.write_int(num_digits, get_prefix(), specs, - hex_writer{*this, num_digits}); - } - - template <int BITS> struct bin_writer { - unsigned_type abs_value; - int num_digits; - - template <typename It> void operator()(It&& it) const { - it = internal::format_uint<BITS, char_type>(it, abs_value, num_digits); - } - }; - - void on_bin() { - if (specs.alt) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = static_cast<char>(specs.type); - } - int num_digits = internal::count_digits<1>(abs_value); - writer.write_int(num_digits, get_prefix(), specs, - bin_writer<1>{abs_value, num_digits}); - } - - void on_oct() { - int num_digits = internal::count_digits<3>(abs_value); - if (specs.alt && specs.precision <= num_digits) { - // Octal prefix '0' is counted as a digit, so only add it if precision - // is not greater than the number of digits. - prefix[prefix_size++] = '0'; - } - writer.write_int(num_digits, get_prefix(), specs, - bin_writer<3>{abs_value, num_digits}); - } - - enum { sep_size = 1 }; - - struct num_writer { - unsigned_type abs_value; - int size; - char_type sep; - - template <typename It> void operator()(It&& it) const { - basic_string_view<char_type> s(&sep, sep_size); - // Index of a decimal digit with the least significant digit having - // index 0. - unsigned digit_index = 0; - it = internal::format_decimal<char_type>( - it, abs_value, size, [s, &digit_index](char_type*& buffer) { - if (++digit_index % 3 != 0) return; - buffer -= s.size(); - std::uninitialized_copy(s.data(), s.data() + s.size(), - internal::make_checked(buffer, s.size())); - }); - } - }; - - void on_num() { - char_type sep = internal::thousands_sep<char_type>(writer.locale_); - if (!sep) return on_dec(); - int num_digits = internal::count_digits(abs_value); - int size = num_digits + sep_size * ((num_digits - 1) / 3); - writer.write_int(size, get_prefix(), specs, - num_writer{abs_value, size, sep}); - } - - FMT_NORETURN void on_error() { - FMT_THROW(format_error("invalid type specifier")); - } - }; - - enum { inf_size = 3 }; // This is an enum to workaround a bug in MSVC. - - struct inf_or_nan_writer { - char sign; - bool as_percentage; - const char* str; - - size_t size() const { - return static_cast<std::size_t>(inf_size + (sign ? 1 : 0) + - (as_percentage ? 1 : 0)); - } - size_t width() const { return size(); } - - template <typename It> void operator()(It&& it) const { - if (sign) *it++ = static_cast<char_type>(sign); - it = internal::copy_str<char_type>( - str, str + static_cast<std::size_t>(inf_size), it); - if (as_percentage) *it++ = static_cast<char_type>('%'); - } - }; - - struct double_writer { - char sign; - internal::buffer<char>& buffer; - char* decimal_point_pos; - char_type decimal_point; - - size_t size() const { return buffer.size() + (sign ? 1 : 0); } - size_t width() const { return size(); } - - template <typename It> void operator()(It&& it) { - if (sign) *it++ = static_cast<char_type>(sign); - auto begin = buffer.begin(); - if (decimal_point_pos) { - it = internal::copy_str<char_type>(begin, decimal_point_pos, it); - *it++ = decimal_point; - begin = decimal_point_pos + 1; - } - it = internal::copy_str<char_type>(begin, buffer.end(), it); - } - }; - - class grisu_writer { - private: - internal::buffer<char>& digits_; - size_t size_; - char sign_; - int exp_; - internal::gen_digits_params params_; - char_type decimal_point_; - - public: - grisu_writer(char sign, internal::buffer<char>& digits, int exp, - const internal::gen_digits_params& params, - char_type decimal_point) - : digits_(digits), - sign_(sign), - exp_(exp), - params_(params), - decimal_point_(decimal_point) { - int num_digits = static_cast<int>(digits.size()); - int full_exp = num_digits + exp - 1; - int precision = params.num_digits > 0 ? params.num_digits : 11; - params_.fixed |= full_exp >= -4 && full_exp < precision; - auto it = internal::grisu_prettify<char>( - digits.data(), num_digits, exp, internal::counting_iterator<char>(), - params_, '.'); - size_ = it.count(); - } - - size_t size() const { return size_ + (sign_ ? 1 : 0); } - size_t width() const { return size(); } - - template <typename It> void operator()(It&& it) { - if (sign_) *it++ = static_cast<char_type>(sign_); - int num_digits = static_cast<int>(digits_.size()); - it = internal::grisu_prettify<char_type>(digits_.data(), num_digits, exp_, - it, params_, decimal_point_); - } - }; - - template <typename Char> struct str_writer { - const Char* s; - size_t size_; - - size_t size() const { return size_; } - size_t width() const { - return internal::count_code_points(basic_string_view<Char>(s, size_)); - } - - template <typename It> void operator()(It&& it) const { - it = internal::copy_str<char_type>(s, s + size_, it); - } - }; - - template <typename UIntPtr> struct pointer_writer { - UIntPtr value; - int num_digits; - - size_t size() const { return to_unsigned(num_digits) + 2; } - size_t width() const { return size(); } - - template <typename It> void operator()(It&& it) const { - *it++ = static_cast<char_type>('0'); - *it++ = static_cast<char_type>('x'); - it = internal::format_uint<4, char_type>(it, value, num_digits); - } - }; - - public: - /** Constructs a ``basic_writer`` object. */ - explicit basic_writer(Range out, - internal::locale_ref loc = internal::locale_ref()) - : out_(out.begin()), locale_(loc) {} - - iterator out() const { return out_; } - - // Writes a value in the format - // <left-padding><value><right-padding> - // where <value> is written by f(it). - template <typename F> void write_padded(const format_specs& specs, F&& f) { - // User-perceived width (in code points). - unsigned width = to_unsigned(specs.width); - size_t size = f.size(); // The number of code units. - size_t num_code_points = width != 0 ? f.width() : size; - if (width <= num_code_points) return f(reserve(size)); - auto&& it = reserve(width + (size - num_code_points)); - char_type fill = specs.fill[0]; - std::size_t padding = width - num_code_points; - if (specs.align == align::right) { - it = std::fill_n(it, padding, fill); - f(it); - } else if (specs.align == align::center) { - std::size_t left_padding = padding / 2; - it = std::fill_n(it, left_padding, fill); - f(it); - it = std::fill_n(it, padding - left_padding, fill); - } else { - f(it); - it = std::fill_n(it, padding, fill); - } - } - - void write(int value) { write_decimal(value); } - void write(long value) { write_decimal(value); } - void write(long long value) { write_decimal(value); } - - void write(unsigned value) { write_decimal(value); } - void write(unsigned long value) { write_decimal(value); } - void write(unsigned long long value) { write_decimal(value); } - - // Writes a formatted integer. - template <typename T, typename Spec> - void write_int(T value, const Spec& spec) { - internal::handle_int_type_spec(spec.type, - int_writer<T, Spec>(*this, value, spec)); - } - - void write(double value, const format_specs& specs = format_specs()) { - write_double(value, specs); - } - - /** - \rst - Formats *value* using the general format for floating-point numbers - (``'g'``) and writes it to the buffer. - \endrst - */ - void write(long double value, const format_specs& specs = format_specs()) { - write_double(value, specs); - } - - // Formats a floating-point number (double or long double). - template <typename T, bool USE_GRISU = fmt::internal::use_grisu<T>()> - void write_double(T value, const format_specs& specs); - - /** Writes a character to the buffer. */ - void write(char value) { - auto&& it = reserve(1); - *it++ = value; - } - - template <typename Char, FMT_ENABLE_IF(std::is_same<Char, char_type>::value)> - void write(Char value) { - auto&& it = reserve(1); - *it++ = value; - } - - /** - \rst - Writes *value* to the buffer. - \endrst - */ - void write(string_view value) { - auto&& it = reserve(value.size()); - it = internal::copy_str<char_type>(value.begin(), value.end(), it); - } - void write(wstring_view value) { - static_assert(std::is_same<char_type, wchar_t>::value, ""); - auto&& it = reserve(value.size()); - it = std::copy(value.begin(), value.end(), it); - } - - // Writes a formatted string. - template <typename Char> - void write(const Char* s, std::size_t size, const format_specs& specs) { - write_padded(specs, str_writer<Char>{s, size}); - } - - template <typename Char> - void write(basic_string_view<Char> s, - const format_specs& specs = format_specs()) { - const Char* data = s.data(); - std::size_t size = s.size(); - if (specs.precision >= 0 && internal::to_unsigned(specs.precision) < size) - size = internal::to_unsigned(specs.precision); - write(data, size, specs); - } - - template <typename UIntPtr> - void write_pointer(UIntPtr value, const format_specs* specs) { - int num_digits = internal::count_digits<4>(value); - auto pw = pointer_writer<UIntPtr>{value, num_digits}; - if (!specs) return pw(reserve(to_unsigned(num_digits) + 2)); - format_specs specs_copy = *specs; - if (specs_copy.align == align::none) specs_copy.align = align::right; - write_padded(specs_copy, pw); - } -}; - -using writer = basic_writer<buffer_range<char>>; - -template <typename Range, typename ErrorHandler = internal::error_handler> -class arg_formatter_base { - public: - using char_type = typename Range::value_type; - using iterator = typename Range::iterator; - using format_specs = basic_format_specs<char_type>; - - private: - using writer_type = basic_writer<Range>; - writer_type writer_; - format_specs* specs_; - - struct char_writer { - char_type value; - - size_t size() const { return 1; } - size_t width() const { return 1; } - - template <typename It> void operator()(It&& it) const { *it++ = value; } - }; - - void write_char(char_type value) { - if (specs_) - writer_.write_padded(*specs_, char_writer{value}); - else - writer_.write(value); - } - - void write_pointer(const void* p) { - writer_.write_pointer(internal::bit_cast<internal::uintptr_t>(p), specs_); - } - - protected: - writer_type& writer() { return writer_; } - FMT_DEPRECATED format_specs* spec() { return specs_; } - format_specs* specs() { return specs_; } - iterator out() { return writer_.out(); } - - void write(bool value) { - string_view sv(value ? "true" : "false"); - specs_ ? writer_.write(sv, *specs_) : writer_.write(sv); - } - - void write(const char_type* value) { - if (!value) FMT_THROW(format_error("string pointer is null")); - auto length = std::char_traits<char_type>::length(value); - basic_string_view<char_type> sv(value, length); - specs_ ? writer_.write(sv, *specs_) : writer_.write(sv); - } - - public: - arg_formatter_base(Range r, format_specs* s, locale_ref loc) - : writer_(r, loc), specs_(s) {} - - iterator operator()(monostate) { - FMT_ASSERT(false, "invalid argument type"); - return out(); - } - - template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> - iterator operator()(T value) { - if (specs_) - writer_.write_int(value, *specs_); - else - writer_.write(value); - return out(); - } - - iterator operator()(char_type value) { - internal::handle_char_specs( - specs_, char_spec_handler(*this, static_cast<char_type>(value))); - return out(); - } - - iterator operator()(bool value) { - if (specs_ && specs_->type) return (*this)(value ? 1 : 0); - write(value != 0); - return out(); - } - - template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> - iterator operator()(T value) { - writer_.write_double(value, specs_ ? *specs_ : format_specs()); - return out(); - } - - struct char_spec_handler : ErrorHandler { - arg_formatter_base& formatter; - char_type value; - - char_spec_handler(arg_formatter_base& f, char_type val) - : formatter(f), value(val) {} - - void on_int() { - if (formatter.specs_) - formatter.writer_.write_int(value, *formatter.specs_); - else - formatter.writer_.write(value); - } - void on_char() { formatter.write_char(value); } - }; - - struct cstring_spec_handler : internal::error_handler { - arg_formatter_base& formatter; - const char_type* value; - - cstring_spec_handler(arg_formatter_base& f, const char_type* val) - : formatter(f), value(val) {} - - void on_string() { formatter.write(value); } - void on_pointer() { formatter.write_pointer(value); } - }; - - iterator operator()(const char_type* value) { - if (!specs_) return write(value), out(); - internal::handle_cstring_type_spec(specs_->type, - cstring_spec_handler(*this, value)); - return out(); - } - - iterator operator()(basic_string_view<char_type> value) { - if (specs_) { - internal::check_string_type_spec(specs_->type, internal::error_handler()); - writer_.write(value, *specs_); - } else { - writer_.write(value); - } - return out(); - } - - iterator operator()(const void* value) { - if (specs_) - check_pointer_type_spec(specs_->type, internal::error_handler()); - write_pointer(value); - return out(); - } -}; - -template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) { - return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; -} - -// Parses the range [begin, end) as an unsigned integer. This function assumes -// that the range is non-empty and the first character is a digit. -template <typename Char, typename ErrorHandler> -FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end, - ErrorHandler&& eh) { - assert(begin != end && '0' <= *begin && *begin <= '9'); - if (*begin == '0') { - ++begin; - return 0; - } - unsigned value = 0; - // Convert to unsigned to prevent a warning. - unsigned max_int = (std::numeric_limits<int>::max)(); - unsigned big = max_int / 10; - do { - // Check for overflow. - if (value > big) { - value = max_int + 1; - break; - } - value = value * 10 + unsigned(*begin - '0'); - ++begin; - } while (begin != end && '0' <= *begin && *begin <= '9'); - if (value > max_int) eh.on_error("number is too big"); - return static_cast<int>(value); -} - -template <typename Context> class custom_formatter { - private: - using char_type = typename Context::char_type; - - basic_parse_context<char_type>& parse_ctx_; - Context& ctx_; - - public: - explicit custom_formatter(basic_parse_context<char_type>& parse_ctx, - Context& ctx) - : parse_ctx_(parse_ctx), ctx_(ctx) {} - - bool operator()(typename basic_format_arg<Context>::handle h) const { - h.format(parse_ctx_, ctx_); - return true; - } - - template <typename T> bool operator()(T) const { return false; } -}; - -template <typename T> -using is_integer = - bool_constant<std::is_integral<T>::value && !std::is_same<T, bool>::value && - !std::is_same<T, char>::value && - !std::is_same<T, wchar_t>::value>; - -template <typename ErrorHandler> class width_checker { - public: - explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {} - - template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> - FMT_CONSTEXPR unsigned long long operator()(T value) { - if (is_negative(value)) handler_.on_error("negative width"); - return static_cast<unsigned long long>(value); - } - - template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> - FMT_CONSTEXPR unsigned long long operator()(T) { - handler_.on_error("width is not integer"); - return 0; - } - - private: - ErrorHandler& handler_; -}; - -template <typename ErrorHandler> class precision_checker { - public: - explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {} - - template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> - FMT_CONSTEXPR unsigned long long operator()(T value) { - if (is_negative(value)) handler_.on_error("negative precision"); - return static_cast<unsigned long long>(value); - } - - template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> - FMT_CONSTEXPR unsigned long long operator()(T) { - handler_.on_error("precision is not integer"); - return 0; - } - - private: - ErrorHandler& handler_; -}; - -// A format specifier handler that sets fields in basic_format_specs. -template <typename Char> class specs_setter { - public: - explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs) - : specs_(specs) {} - - FMT_CONSTEXPR specs_setter(const specs_setter& other) - : specs_(other.specs_) {} - - FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } - FMT_CONSTEXPR void on_fill(Char fill) { specs_.fill[0] = fill; } - FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; } - FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; } - FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; } - FMT_CONSTEXPR void on_hash() { specs_.alt = true; } - - FMT_CONSTEXPR void on_zero() { - specs_.align = align::numeric; - specs_.fill[0] = Char('0'); - } - - FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } - FMT_CONSTEXPR void on_precision(int precision) { - specs_.precision = precision; - } - FMT_CONSTEXPR void end_precision() {} - - FMT_CONSTEXPR void on_type(Char type) { - specs_.type = static_cast<char>(type); - } - - protected: - basic_format_specs<Char>& specs_; -}; - -template <typename ErrorHandler> class numeric_specs_checker { - public: - FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, internal::type arg_type) - : error_handler_(eh), arg_type_(arg_type) {} - - FMT_CONSTEXPR void require_numeric_argument() { - if (!is_arithmetic(arg_type_)) - error_handler_.on_error("format specifier requires numeric argument"); - } - - FMT_CONSTEXPR void check_sign() { - require_numeric_argument(); - if (is_integral(arg_type_) && arg_type_ != int_type && - arg_type_ != long_long_type && arg_type_ != internal::char_type) { - error_handler_.on_error("format specifier requires signed argument"); - } - } - - FMT_CONSTEXPR void check_precision() { - if (is_integral(arg_type_) || arg_type_ == internal::pointer_type) - error_handler_.on_error("precision not allowed for this argument type"); - } - - private: - ErrorHandler& error_handler_; - internal::type arg_type_; -}; - -// A format specifier handler that checks if specifiers are consistent with the -// argument type. -template <typename Handler> class specs_checker : public Handler { - public: - FMT_CONSTEXPR specs_checker(const Handler& handler, internal::type arg_type) - : Handler(handler), checker_(*this, arg_type) {} - - FMT_CONSTEXPR specs_checker(const specs_checker& other) - : Handler(other), checker_(*this, other.arg_type_) {} - - FMT_CONSTEXPR void on_align(align_t align) { - if (align == align::numeric) checker_.require_numeric_argument(); - Handler::on_align(align); - } - - FMT_CONSTEXPR void on_plus() { - checker_.check_sign(); - Handler::on_plus(); - } - - FMT_CONSTEXPR void on_minus() { - checker_.check_sign(); - Handler::on_minus(); - } - - FMT_CONSTEXPR void on_space() { - checker_.check_sign(); - Handler::on_space(); - } - - FMT_CONSTEXPR void on_hash() { - checker_.require_numeric_argument(); - Handler::on_hash(); - } - - FMT_CONSTEXPR void on_zero() { - checker_.require_numeric_argument(); - Handler::on_zero(); - } - - FMT_CONSTEXPR void end_precision() { checker_.check_precision(); } - - private: - numeric_specs_checker<Handler> checker_; -}; - -template <template <typename> class Handler, typename T, typename FormatArg, - typename ErrorHandler> -FMT_CONSTEXPR void set_dynamic_spec(T& value, FormatArg arg, ErrorHandler eh) { - unsigned long long big_value = - visit_format_arg(Handler<ErrorHandler>(eh), arg); - if (big_value > to_unsigned((std::numeric_limits<int>::max)())) - eh.on_error("number is too big"); - value = static_cast<T>(big_value); -} - -struct auto_id {}; - -template <typename Context> -FMT_CONSTEXPR typename Context::format_arg get_arg(Context& ctx, unsigned id) { - auto arg = ctx.arg(id); - if (!arg) ctx.on_error("argument index out of range"); - return arg; -} - -// The standard format specifier handler with checking. -template <typename ParseContext, typename Context> -class specs_handler : public specs_setter<typename Context::char_type> { - public: - using char_type = typename Context::char_type; - - FMT_CONSTEXPR specs_handler(basic_format_specs<char_type>& specs, - ParseContext& parse_ctx, Context& ctx) - : specs_setter<char_type>(specs), - parse_context_(parse_ctx), - context_(ctx) {} - - template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { - set_dynamic_spec<width_checker>(this->specs_.width, get_arg(arg_id), - context_.error_handler()); - } - - template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { - set_dynamic_spec<precision_checker>(this->specs_.precision, get_arg(arg_id), - context_.error_handler()); - } - - void on_error(const char* message) { context_.on_error(message); } - - private: - // This is only needed for compatibility with gcc 4.4. - using format_arg = typename Context::format_arg; - - FMT_CONSTEXPR format_arg get_arg(auto_id) { - return internal::get_arg(context_, parse_context_.next_arg_id()); - } - - FMT_CONSTEXPR format_arg get_arg(unsigned arg_id) { - parse_context_.check_arg_id(arg_id); - return internal::get_arg(context_, arg_id); - } - - FMT_CONSTEXPR format_arg get_arg(basic_string_view<char_type> arg_id) { - parse_context_.check_arg_id(arg_id); - return context_.arg(arg_id); - } - - ParseContext& parse_context_; - Context& context_; -}; - -struct string_view_metadata { - FMT_CONSTEXPR string_view_metadata() : offset_(0u), size_(0u) {} - template <typename Char> - FMT_CONSTEXPR string_view_metadata(basic_string_view<Char> primary_string, - basic_string_view<Char> view) - : offset_(to_unsigned(view.data() - primary_string.data())), - size_(view.size()) {} - FMT_CONSTEXPR string_view_metadata(std::size_t offset, std::size_t size) - : offset_(offset), size_(size) {} - template <typename Char> - FMT_CONSTEXPR basic_string_view<Char> to_view(const Char* str) const { - return {str + offset_, size_}; - } - - std::size_t offset_; - std::size_t size_; -}; - -enum class arg_id_kind { none, index, name }; - -// An argument reference. -template <typename Char> struct arg_ref { - FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} - FMT_CONSTEXPR explicit arg_ref(int index) - : kind(arg_id_kind::index), val(index) {} - FMT_CONSTEXPR explicit arg_ref(string_view_metadata name) - : kind(arg_id_kind::name), val(name) {} - - FMT_CONSTEXPR arg_ref& operator=(int idx) { - kind = arg_id_kind::index; - val.index = idx; - return *this; - } - - arg_id_kind kind; - union value { - FMT_CONSTEXPR value() : index(0u) {} - FMT_CONSTEXPR value(int id) : index(id) {} - FMT_CONSTEXPR value(string_view_metadata n) : name(n) {} - - int index; - string_view_metadata name; - } val; -}; - -// Format specifiers with width and precision resolved at formatting rather -// than parsing time to allow re-using the same parsed specifiers with -// different sets of arguments (precompilation of format strings). -template <typename Char> -struct dynamic_format_specs : basic_format_specs<Char> { - arg_ref<Char> width_ref; - arg_ref<Char> precision_ref; -}; - -// Format spec handler that saves references to arguments representing dynamic -// width and precision to be resolved at formatting time. -template <typename ParseContext> -class dynamic_specs_handler - : public specs_setter<typename ParseContext::char_type> { - public: - using char_type = typename ParseContext::char_type; - - FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs, - ParseContext& ctx) - : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {} - - FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other) - : specs_setter<char_type>(other), - specs_(other.specs_), - context_(other.context_) {} - - template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { - specs_.width_ref = make_arg_ref(arg_id); - } - - template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { - specs_.precision_ref = make_arg_ref(arg_id); - } - - FMT_CONSTEXPR void on_error(const char* message) { - context_.on_error(message); - } - - private: - using arg_ref_type = arg_ref<char_type>; - - FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) { - context_.check_arg_id(arg_id); - return arg_ref_type(arg_id); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) { - return arg_ref_type(context_.next_arg_id()); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) { - context_.check_arg_id(arg_id); - basic_string_view<char_type> format_str( - context_.begin(), to_unsigned(context_.end() - context_.begin())); - const auto id_metadata = string_view_metadata(format_str, arg_id); - return arg_ref_type(id_metadata); - } - - dynamic_format_specs<char_type>& specs_; - ParseContext& context_; -}; - -template <typename Char, typename IDHandler> -FMT_CONSTEXPR const Char* parse_arg_id(const Char* begin, const Char* end, - IDHandler&& handler) { - assert(begin != end); - Char c = *begin; - if (c == '}' || c == ':') return handler(), begin; - if (c >= '0' && c <= '9') { - int index = parse_nonnegative_int(begin, end, handler); - if (begin == end || (*begin != '}' && *begin != ':')) - return handler.on_error("invalid format string"), begin; - handler(index); - return begin; - } - if (!is_name_start(c)) - return handler.on_error("invalid format string"), begin; - auto it = begin; - do { - ++it; - } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9'))); - handler(basic_string_view<Char>(begin, to_unsigned(it - begin))); - return it; -} - -// Adapts SpecHandler to IDHandler API for dynamic width. -template <typename SpecHandler, typename Char> struct width_adapter { - explicit FMT_CONSTEXPR width_adapter(SpecHandler& h) : handler(h) {} - - FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } - FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); } - FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { - handler.on_dynamic_width(id); - } - - FMT_CONSTEXPR void on_error(const char* message) { - handler.on_error(message); - } - - SpecHandler& handler; -}; - -// Adapts SpecHandler to IDHandler API for dynamic precision. -template <typename SpecHandler, typename Char> struct precision_adapter { - explicit FMT_CONSTEXPR precision_adapter(SpecHandler& h) : handler(h) {} - - FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } - FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); } - FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { - handler.on_dynamic_precision(id); - } - - FMT_CONSTEXPR void on_error(const char* message) { - handler.on_error(message); - } - - SpecHandler& handler; -}; - -// Parses fill and alignment. -template <typename Char, typename Handler> -FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end, - Handler&& handler) { - FMT_ASSERT(begin != end, ""); - auto align = align::none; - int i = 0; - if (begin + 1 != end) ++i; - do { - switch (static_cast<char>(begin[i])) { - case '<': - align = align::left; - break; - case '>': - align = align::right; - break; - case '=': - align = align::numeric; - break; - case '^': - align = align::center; - break; - } - if (align != align::none) { - if (i > 0) { - auto c = *begin; - if (c == '{') - return handler.on_error("invalid fill character '{'"), begin; - begin += 2; - handler.on_fill(c); - } else - ++begin; - handler.on_align(align); - break; - } - } while (i-- > 0); - return begin; -} - -template <typename Char, typename Handler> -FMT_CONSTEXPR const Char* parse_width(const Char* begin, const Char* end, - Handler&& handler) { - FMT_ASSERT(begin != end, ""); - if ('0' <= *begin && *begin <= '9') { - handler.on_width(parse_nonnegative_int(begin, end, handler)); - } else if (*begin == '{') { - ++begin; - if (begin != end) - begin = parse_arg_id(begin, end, width_adapter<Handler, Char>(handler)); - if (begin == end || *begin != '}') - return handler.on_error("invalid format string"), begin; - ++begin; - } - return begin; -} - -template <typename Char, typename Handler> -FMT_CONSTEXPR const Char* parse_precision(const Char* begin, const Char* end, - Handler&& handler) { - ++begin; - auto c = begin != end ? *begin : Char(); - if ('0' <= c && c <= '9') { - handler.on_precision(parse_nonnegative_int(begin, end, handler)); - } else if (c == '{') { - ++begin; - if (begin != end) { - begin = - parse_arg_id(begin, end, precision_adapter<Handler, Char>(handler)); - } - if (begin == end || *begin++ != '}') - return handler.on_error("invalid format string"), begin; - } else { - return handler.on_error("missing precision specifier"), begin; - } - handler.end_precision(); - return begin; -} - -// Parses standard format specifiers and sends notifications about parsed -// components to handler. -template <typename Char, typename SpecHandler> -FMT_CONSTEXPR const Char* parse_format_specs(const Char* begin, const Char* end, - SpecHandler&& handler) { - if (begin == end || *begin == '}') return begin; - - begin = parse_align(begin, end, handler); - if (begin == end) return begin; - - // Parse sign. - switch (static_cast<char>(*begin)) { - case '+': - handler.on_plus(); - ++begin; - break; - case '-': - handler.on_minus(); - ++begin; - break; - case ' ': - handler.on_space(); - ++begin; - break; - } - if (begin == end) return begin; - - if (*begin == '#') { - handler.on_hash(); - if (++begin == end) return begin; - } - - // Parse zero flag. - if (*begin == '0') { - handler.on_zero(); - if (++begin == end) return begin; - } - - begin = parse_width(begin, end, handler); - if (begin == end) return begin; - - // Parse precision. - if (*begin == '.') { - begin = parse_precision(begin, end, handler); - } - - // Parse type. - if (begin != end && *begin != '}') handler.on_type(*begin++); - return begin; -} - -// Return the result via the out param to workaround gcc bug 77539. -template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*> -FMT_CONSTEXPR bool find(Ptr first, Ptr last, T value, Ptr& out) { - for (out = first; out != last; ++out) { - if (*out == value) return true; - } - return false; -} - -template <> -inline bool find<false, char>(const char* first, const char* last, char value, - const char*& out) { - out = static_cast<const char*>( - std::memchr(first, value, internal::to_unsigned(last - first))); - return out != nullptr; -} - -template <typename Handler, typename Char> struct id_adapter { - FMT_CONSTEXPR void operator()() { handler.on_arg_id(); } - FMT_CONSTEXPR void operator()(unsigned id) { handler.on_arg_id(id); } - FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { - handler.on_arg_id(id); - } - FMT_CONSTEXPR void on_error(const char* message) { - handler.on_error(message); - } - Handler& handler; -}; - -template <bool IS_CONSTEXPR, typename Char, typename Handler> -FMT_CONSTEXPR void parse_format_string(basic_string_view<Char> format_str, - Handler&& handler) { - struct writer { - FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) { - if (begin == end) return; - for (;;) { - const Char* p = nullptr; - if (!find<IS_CONSTEXPR>(begin, end, '}', p)) - return handler_.on_text(begin, end); - ++p; - if (p == end || *p != '}') - return handler_.on_error("unmatched '}' in format string"); - handler_.on_text(begin, p); - begin = p + 1; - } - } - Handler& handler_; - } write{handler}; - auto begin = format_str.data(); - auto end = begin + format_str.size(); - while (begin != end) { - // Doing two passes with memchr (one for '{' and another for '}') is up to - // 2.5x faster than the naive one-pass implementation on big format strings. - const Char* p = begin; - if (*begin != '{' && !find<IS_CONSTEXPR>(begin, end, '{', p)) - return write(begin, end); - write(begin, p); - ++p; - if (p == end) return handler.on_error("invalid format string"); - if (static_cast<char>(*p) == '}') { - handler.on_arg_id(); - handler.on_replacement_field(p); - } else if (*p == '{') { - handler.on_text(p, p + 1); - } else { - p = parse_arg_id(p, end, id_adapter<Handler, Char>{handler}); - Char c = p != end ? *p : Char(); - if (c == '}') { - handler.on_replacement_field(p); - } else if (c == ':') { - p = handler.on_format_specs(p + 1, end); - if (p == end || *p != '}') - return handler.on_error("unknown format specifier"); - } else { - return handler.on_error("missing '}' in format string"); - } - } - begin = p + 1; - } -} - -template <typename T, typename ParseContext> -FMT_CONSTEXPR const typename ParseContext::char_type* parse_format_specs( - ParseContext& ctx) { - using char_type = typename ParseContext::char_type; - using context = buffer_context<char_type>; - using mapped_type = - conditional_t<internal::mapped_type_constant<T, context>::value != - internal::custom_type, - decltype(arg_mapper<context>().map(std::declval<T>())), T>; - conditional_t<has_formatter<mapped_type, context>::value, - formatter<mapped_type, char_type>, - internal::fallback_formatter<T, char_type>> - f; - return f.parse(ctx); -} - -template <typename Char, typename ErrorHandler, typename... Args> -class format_string_checker { - public: - explicit FMT_CONSTEXPR format_string_checker( - basic_string_view<Char> format_str, ErrorHandler eh) - : arg_id_((std::numeric_limits<unsigned>::max)()), - context_(format_str, eh), - parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {} - - FMT_CONSTEXPR void on_text(const Char*, const Char*) {} - - FMT_CONSTEXPR void on_arg_id() { - arg_id_ = context_.next_arg_id(); - check_arg_id(); - } - FMT_CONSTEXPR void on_arg_id(unsigned id) { - arg_id_ = id; - context_.check_arg_id(id); - check_arg_id(); - } - FMT_CONSTEXPR void on_arg_id(basic_string_view<Char>) { - on_error("compile-time checks don't support named arguments"); - } - - FMT_CONSTEXPR void on_replacement_field(const Char*) {} - - FMT_CONSTEXPR const Char* on_format_specs(const Char* begin, const Char*) { - advance_to(context_, begin); - return arg_id_ < num_args ? parse_funcs_[arg_id_](context_) : begin; - } - - FMT_CONSTEXPR void on_error(const char* message) { - context_.on_error(message); - } - - private: - using parse_context_type = basic_parse_context<Char, ErrorHandler>; - enum { num_args = sizeof...(Args) }; - - FMT_CONSTEXPR void check_arg_id() { - if (arg_id_ >= num_args) context_.on_error("argument index out of range"); - } - - // Format specifier parsing function. - using parse_func = const Char* (*)(parse_context_type&); - - unsigned arg_id_; - parse_context_type context_; - parse_func parse_funcs_[num_args > 0 ? num_args : 1]; -}; - -template <typename Char, typename ErrorHandler, typename... Args> -FMT_CONSTEXPR bool do_check_format_string(basic_string_view<Char> s, - ErrorHandler eh = ErrorHandler()) { - format_string_checker<Char, ErrorHandler, Args...> checker(s, eh); - parse_format_string<true>(s, checker); - return true; -} - -template <typename... Args, typename S, - enable_if_t<(is_compile_string<S>::value), int>> -void check_format_string(S format_str) { - FMT_CONSTEXPR_DECL bool invalid_format = - internal::do_check_format_string<typename S::char_type, - internal::error_handler, Args...>( - to_string_view(format_str)); - (void)invalid_format; -} - -template <template <typename> class Handler, typename Spec, typename Context> -void handle_dynamic_spec(Spec& value, arg_ref<typename Context::char_type> ref, - Context& ctx, - const typename Context::char_type* format_str) { - switch (ref.kind) { - case arg_id_kind::none: - break; - case arg_id_kind::index: - internal::set_dynamic_spec<Handler>(value, ctx.arg(ref.val.index), - ctx.error_handler()); - break; - case arg_id_kind::name: { - const auto arg_id = ref.val.name.to_view(format_str); - internal::set_dynamic_spec<Handler>(value, ctx.arg(arg_id), - ctx.error_handler()); - break; - } - } -} -} // namespace internal - -template <typename Range> -using basic_writer FMT_DEPRECATED = internal::basic_writer<Range>; -using writer FMT_DEPRECATED = internal::writer; -using wwriter FMT_DEPRECATED = - internal::basic_writer<internal::buffer_range<wchar_t>>; - -/** The default argument formatter. */ -template <typename Range> -class arg_formatter : public internal::arg_formatter_base<Range> { - private: - using char_type = typename Range::value_type; - using base = internal::arg_formatter_base<Range>; - using context_type = basic_format_context<typename base::iterator, char_type>; - - context_type& ctx_; - basic_parse_context<char_type>* parse_ctx_; - - public: - using range = Range; - using iterator = typename base::iterator; - using format_specs = typename base::format_specs; - - /** - \rst - Constructs an argument formatter object. - *ctx* is a reference to the formatting context, - *specs* contains format specifier information for standard argument types. - \endrst - */ - explicit arg_formatter(context_type& ctx, - basic_parse_context<char_type>* parse_ctx = nullptr, - format_specs* specs = nullptr) - : base(Range(ctx.out()), specs, ctx.locale()), - ctx_(ctx), - parse_ctx_(parse_ctx) {} - - using base::operator(); - - /** Formats an argument of a user-defined type. */ - iterator operator()(typename basic_format_arg<context_type>::handle handle) { - handle.format(*parse_ctx_, ctx_); - return this->out(); - } -}; - -/** - An error returned by an operating system or a language runtime, - for example a file opening error. -*/ -class FMT_API system_error : public std::runtime_error { - private: - void init(int err_code, string_view format_str, format_args args); - - protected: - int error_code_; - - system_error() : std::runtime_error("") {} - - public: - /** - \rst - Constructs a :class:`fmt::system_error` object with a description - formatted with `fmt::format_system_error`. *message* and additional - arguments passed into the constructor are formatted similarly to - `fmt::format`. - - **Example**:: - - // This throws a system_error with the description - // cannot open file 'madeup': No such file or directory - // or similar (system message may vary). - const char *filename = "madeup"; - std::FILE *file = std::fopen(filename, "r"); - if (!file) - throw fmt::system_error(errno, "cannot open file '{}'", filename); - \endrst - */ - template <typename... Args> - system_error(int error_code, string_view message, const Args&... args) - : std::runtime_error("") { - init(error_code, message, make_format_args(args...)); - } - ~system_error() FMT_NOEXCEPT; - - int error_code() const { return error_code_; } -}; - -/** - \rst - Formats an error returned by an operating system or a language runtime, - for example a file opening error, and writes it to *out* in the following - form: - - .. parsed-literal:: - *<message>*: *<system-message>* - - where *<message>* is the passed message and *<system-message>* is - the system message corresponding to the error code. - *error_code* is a system error code as given by ``errno``. - If *error_code* is not a valid error code such as -1, the system message - may look like "Unknown error -1" and is platform-dependent. - \endrst - */ -FMT_API void format_system_error(internal::buffer<char>& out, int error_code, - fmt::string_view message) FMT_NOEXCEPT; - -struct float_spec_handler { - char type; - bool upper; - bool fixed; - bool as_percentage; - bool use_locale; - - explicit float_spec_handler(char t) - : type(t), - upper(false), - fixed(false), - as_percentage(false), - use_locale(false) {} - - void on_general() { - if (type == 'G') upper = true; - } - - void on_exp() { - if (type == 'E') upper = true; - } - - void on_fixed() { - fixed = true; - if (type == 'F') upper = true; - } - - void on_percent() { - fixed = true; - as_percentage = true; - } - - void on_hex() { - if (type == 'A') upper = true; - } - - void on_num() { use_locale = true; } - - FMT_NORETURN void on_error() { - FMT_THROW(format_error("invalid type specifier")); - } -}; - -template <typename Range> -template <typename T, bool USE_GRISU> -void internal::basic_writer<Range>::write_double(T value, - const format_specs& specs) { - // Check type. - float_spec_handler handler(static_cast<char>(specs.type)); - internal::handle_float_type_spec(handler.type, handler); - - char sign = 0; - // Use signbit instead of value < 0 since the latter is always false for NaN. - if (std::signbit(value)) { - sign = '-'; - value = -value; - } else if (specs.sign != sign::none) { - if (specs.sign == sign::plus) - sign = '+'; - else if (specs.sign == sign::space) - sign = ' '; - } - - if (!std::isfinite(value)) { - // Format infinity and NaN ourselves because sprintf's output is not - // consistent across platforms. - const char* str = std::isinf(value) ? (handler.upper ? "INF" : "inf") - : (handler.upper ? "NAN" : "nan"); - return write_padded(specs, - inf_or_nan_writer{sign, handler.as_percentage, str}); - } - - if (handler.as_percentage) value *= 100; - - memory_buffer buffer; - int exp = 0; - int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6; - unsigned options = handler.fixed ? internal::grisu_options::fixed : 0; - bool use_grisu = USE_GRISU && - (specs.type != 'a' && specs.type != 'A' && - specs.type != 'e' && specs.type != 'E') && - internal::grisu_format(static_cast<double>(value), buffer, - precision, options, exp); - char* decimal_point_pos = nullptr; - if (!use_grisu) - decimal_point_pos = internal::sprintf_format(value, buffer, specs); - - if (handler.as_percentage) { - buffer.push_back('%'); - --exp; // Adjust decimal place position. - } - format_specs as = specs; - if (specs.align == align::numeric) { - if (sign) { - auto&& it = reserve(1); - *it++ = static_cast<char_type>(sign); - sign = 0; - if (as.width) --as.width; - } - as.align = align::right; - } else if (specs.align == align::none) { - as.align = align::right; - } - char_type decimal_point = handler.use_locale - ? internal::decimal_point<char_type>(locale_) - : static_cast<char_type>('.'); - if (use_grisu) { - auto params = internal::gen_digits_params(); - params.fixed = handler.fixed; - params.num_digits = precision; - params.trailing_zeros = - (precision != 0 && (handler.fixed || !specs.type)) || specs.alt; - write_padded(as, grisu_writer(sign, buffer, exp, params, decimal_point)); - } else { - write_padded(as, - double_writer{sign, buffer, decimal_point_pos, decimal_point}); - } -} - -// Reports a system error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_system_error(int error_code, - string_view message) FMT_NOEXCEPT; - -#if FMT_USE_WINDOWS_H - -/** A Windows error. */ -class windows_error : public system_error { - private: - FMT_API void init(int error_code, string_view format_str, format_args args); - - public: - /** - \rst - Constructs a :class:`fmt::windows_error` object with the description - of the form - - .. parsed-literal:: - *<message>*: *<system-message>* - - where *<message>* is the formatted message and *<system-message>* is the - system message corresponding to the error code. - *error_code* is a Windows error code as given by ``GetLastError``. - If *error_code* is not a valid error code such as -1, the system message - will look like "error -1". - - **Example**:: - - // This throws a windows_error with the description - // cannot open file 'madeup': The system cannot find the file specified. - // or similar (system message may vary). - const char *filename = "madeup"; - LPOFSTRUCT of = LPOFSTRUCT(); - HFILE file = OpenFile(filename, &of, OF_READ); - if (file == HFILE_ERROR) { - throw fmt::windows_error(GetLastError(), - "cannot open file '{}'", filename); - } - \endrst - */ - template <typename... Args> - windows_error(int error_code, string_view message, const Args&... args) { - init(error_code, message, make_format_args(args...)); - } -}; - -// Reports a Windows error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_windows_error(int error_code, - string_view message) FMT_NOEXCEPT; - -#endif - -/** Fast integer formatter. */ -class format_int { - private: - // Buffer should be large enough to hold all digits (digits10 + 1), - // a sign and a null character. - enum { buffer_size = std::numeric_limits<unsigned long long>::digits10 + 3 }; - mutable char buffer_[buffer_size]; - char* str_; - - // Formats value in reverse and returns a pointer to the beginning. - char* format_decimal(unsigned long long value) { - char* ptr = buffer_ + (buffer_size - 1); // Parens to workaround MSVC bug. - while (value >= 100) { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast<unsigned>((value % 100) * 2); - value /= 100; - *--ptr = internal::data::digits[index + 1]; - *--ptr = internal::data::digits[index]; - } - if (value < 10) { - *--ptr = static_cast<char>('0' + value); - return ptr; - } - unsigned index = static_cast<unsigned>(value * 2); - *--ptr = internal::data::digits[index + 1]; - *--ptr = internal::data::digits[index]; - return ptr; - } - - void format_signed(long long value) { - unsigned long long abs_value = static_cast<unsigned long long>(value); - bool negative = value < 0; - if (negative) abs_value = 0 - abs_value; - str_ = format_decimal(abs_value); - if (negative) *--str_ = '-'; - } - - public: - explicit format_int(int value) { format_signed(value); } - explicit format_int(long value) { format_signed(value); } - explicit format_int(long long value) { format_signed(value); } - explicit format_int(unsigned value) : str_(format_decimal(value)) {} - explicit format_int(unsigned long value) : str_(format_decimal(value)) {} - explicit format_int(unsigned long long value) : str_(format_decimal(value)) {} - - /** Returns the number of characters written to the output buffer. */ - std::size_t size() const { - return internal::to_unsigned(buffer_ - str_ + buffer_size - 1); - } - - /** - Returns a pointer to the output buffer content. No terminating null - character is appended. - */ - const char* data() const { return str_; } - - /** - Returns a pointer to the output buffer content with terminating null - character appended. - */ - const char* c_str() const { - buffer_[buffer_size - 1] = '\0'; - return str_; - } - - /** - \rst - Returns the content of the output buffer as an ``std::string``. - \endrst - */ - std::string str() const { return std::string(str_, size()); } -}; - -// A formatter specialization for the core types corresponding to internal::type -// constants. -template <typename T, typename Char> -struct formatter<T, Char, - enable_if_t<internal::type_constant<T, Char>::value != - internal::custom_type>> { - FMT_CONSTEXPR formatter() : format_str_(nullptr) {} - - // Parses format specifiers stopping either at the end of the range or at the - // terminating '}'. - template <typename ParseContext> - FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - format_str_ = ctx.begin(); - using handler_type = internal::dynamic_specs_handler<ParseContext>; - auto type = internal::type_constant<T, Char>::value; - internal::specs_checker<handler_type> handler(handler_type(specs_, ctx), - type); - auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); - auto eh = ctx.error_handler(); - switch (type) { - case internal::none_type: - case internal::named_arg_type: - FMT_ASSERT(false, "invalid argument type"); - break; - case internal::int_type: - case internal::uint_type: - case internal::long_long_type: - case internal::ulong_long_type: - case internal::bool_type: - handle_int_type_spec(specs_.type, - internal::int_type_checker<decltype(eh)>(eh)); - break; - case internal::char_type: - handle_char_specs( - &specs_, internal::char_specs_checker<decltype(eh)>(specs_.type, eh)); - break; - case internal::double_type: - case internal::long_double_type: - handle_float_type_spec(specs_.type, - internal::float_type_checker<decltype(eh)>(eh)); - break; - case internal::cstring_type: - internal::handle_cstring_type_spec( - specs_.type, internal::cstring_type_checker<decltype(eh)>(eh)); - break; - case internal::string_type: - internal::check_string_type_spec(specs_.type, eh); - break; - case internal::pointer_type: - internal::check_pointer_type_spec(specs_.type, eh); - break; - case internal::custom_type: - // Custom format specifiers should be checked in parse functions of - // formatter specializations. - break; - } - return it; - } - - template <typename FormatContext> - auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { - internal::handle_dynamic_spec<internal::width_checker>( - specs_.width, specs_.width_ref, ctx, format_str_); - internal::handle_dynamic_spec<internal::precision_checker>( - specs_.precision, specs_.precision_ref, ctx, format_str_); - using range_type = - internal::output_range<typename FormatContext::iterator, - typename FormatContext::char_type>; - return visit_format_arg(arg_formatter<range_type>(ctx, nullptr, &specs_), - internal::make_arg<FormatContext>(val)); - } - - private: - internal::dynamic_format_specs<Char> specs_; - const Char* format_str_; -}; - -#define FMT_FORMAT_AS(Type, Base) \ - template <typename Char> \ - struct formatter<Type, Char> : formatter<Base, Char> { \ - template <typename FormatContext> \ - auto format(const Type& val, FormatContext& ctx) -> decltype(ctx.out()) { \ - return formatter<Base, Char>::format(val, ctx); \ - } \ - } - -FMT_FORMAT_AS(signed char, int); -FMT_FORMAT_AS(unsigned char, unsigned); -FMT_FORMAT_AS(short, int); -FMT_FORMAT_AS(unsigned short, unsigned); -FMT_FORMAT_AS(long, long long); -FMT_FORMAT_AS(unsigned long, unsigned long long); -FMT_FORMAT_AS(float, double); -FMT_FORMAT_AS(Char*, const Char*); -FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>); -FMT_FORMAT_AS(std::nullptr_t, const void*); -FMT_FORMAT_AS(internal::std_string_view<Char>, basic_string_view<Char>); - -template <typename Char> -struct formatter<void*, Char> : formatter<const void*, Char> { - template <typename FormatContext> - auto format(void* val, FormatContext& ctx) -> decltype(ctx.out()) { - return formatter<const void*, Char>::format(val, ctx); - } -}; - -template <typename Char, size_t N> -struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> { - template <typename FormatContext> - auto format(const Char* val, FormatContext& ctx) -> decltype(ctx.out()) { - return formatter<basic_string_view<Char>, Char>::format(val, ctx); - } -}; - -// A formatter for types known only at run time such as variant alternatives. -// -// Usage: -// using variant = std::variant<int, std::string>; -// template <> -// struct formatter<variant>: dynamic_formatter<> { -// void format(buffer &buf, const variant &v, context &ctx) { -// visit([&](const auto &val) { format(buf, val, ctx); }, v); -// } -// }; -template <typename Char = char> class dynamic_formatter { - private: - struct null_handler : internal::error_handler { - void on_align(align_t) {} - void on_plus() {} - void on_minus() {} - void on_space() {} - void on_hash() {} - }; - - public: - template <typename ParseContext> - auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - format_str_ = ctx.begin(); - // Checks are deferred to formatting time when the argument type is known. - internal::dynamic_specs_handler<ParseContext> handler(specs_, ctx); - return parse_format_specs(ctx.begin(), ctx.end(), handler); - } - - template <typename T, typename FormatContext> - auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { - handle_specs(ctx); - internal::specs_checker<null_handler> checker( - null_handler(), - internal::mapped_type_constant<T, FormatContext>::value); - checker.on_align(specs_.align); - switch (specs_.sign) { - case sign::none: - break; - case sign::plus: - checker.on_plus(); - break; - case sign::minus: - checker.on_minus(); - break; - case sign::space: - checker.on_space(); - break; - } - if (specs_.alt) checker.on_hash(); - if (specs_.precision >= 0) checker.end_precision(); - using range = internal::output_range<typename FormatContext::iterator, - typename FormatContext::char_type>; - visit_format_arg(arg_formatter<range>(ctx, nullptr, &specs_), - internal::make_arg<FormatContext>(val)); - return ctx.out(); - } - - private: - template <typename Context> void handle_specs(Context& ctx) { - internal::handle_dynamic_spec<internal::width_checker>( - specs_.width, specs_.width_ref, ctx, format_str_); - internal::handle_dynamic_spec<internal::precision_checker>( - specs_.precision, specs_.precision_ref, ctx, format_str_); - } - - internal::dynamic_format_specs<Char> specs_; - const Char* format_str_; -}; - -template <typename Range, typename Char> -typename basic_format_context<Range, Char>::format_arg -basic_format_context<Range, Char>::arg(basic_string_view<char_type> name) { - map_.init(args_); - format_arg arg = map_.find(name); - if (arg.type() == internal::none_type) this->on_error("argument not found"); - return arg; -} - -template <typename Char, typename ErrorHandler> -FMT_CONSTEXPR void advance_to(basic_parse_context<Char, ErrorHandler>& ctx, - const Char* p) { - ctx.advance_to(ctx.begin() + (p - &*ctx.begin())); -} - -template <typename ArgFormatter, typename Char, typename Context> -struct format_handler : internal::error_handler { - using range = typename ArgFormatter::range; - - format_handler(range r, basic_string_view<Char> str, - basic_format_args<Context> format_args, - internal::locale_ref loc) - : parse_context(str), context(r.begin(), format_args, loc) {} - - void on_text(const Char* begin, const Char* end) { - auto size = internal::to_unsigned(end - begin); - auto out = context.out(); - auto&& it = internal::reserve(out, size); - it = std::copy_n(begin, size, it); - context.advance_to(out); - } - - void get_arg(unsigned id) { arg = internal::get_arg(context, id); } - - void on_arg_id() { get_arg(parse_context.next_arg_id()); } - void on_arg_id(unsigned id) { - parse_context.check_arg_id(id); - get_arg(id); - } - void on_arg_id(basic_string_view<Char> id) { arg = context.arg(id); } - - void on_replacement_field(const Char* p) { - advance_to(parse_context, p); - internal::custom_formatter<Context> f(parse_context, context); - if (!visit_format_arg(f, arg)) - context.advance_to( - visit_format_arg(ArgFormatter(context, &parse_context), arg)); - } - - const Char* on_format_specs(const Char* begin, const Char* end) { - advance_to(parse_context, begin); - internal::custom_formatter<Context> f(parse_context, context); - if (visit_format_arg(f, arg)) return parse_context.begin(); - basic_format_specs<Char> specs; - using internal::specs_handler; - using parse_context_t = basic_parse_context<Char>; - internal::specs_checker<specs_handler<parse_context_t, Context>> handler( - specs_handler<parse_context_t, Context>(specs, parse_context, context), - arg.type()); - begin = parse_format_specs(begin, end, handler); - if (begin == end || *begin != '}') on_error("missing '}' in format string"); - advance_to(parse_context, begin); - context.advance_to( - visit_format_arg(ArgFormatter(context, &parse_context, &specs), arg)); - return begin; - } - - basic_parse_context<Char> parse_context; - Context context; - basic_format_arg<Context> arg; -}; - -/** Formats arguments and writes the output to the range. */ -template <typename ArgFormatter, typename Char, typename Context> -typename Context::iterator vformat_to( - typename ArgFormatter::range out, basic_string_view<Char> format_str, - basic_format_args<Context> args, - internal::locale_ref loc = internal::locale_ref()) { - format_handler<ArgFormatter, Char, Context> h(out, format_str, args, loc); - internal::parse_format_string<false>(format_str, h); - return h.context.out(); -} - -// Casts ``p`` to ``const void*`` for pointer formatting. -// Example: -// auto s = format("{}", ptr(p)); -template <typename T> inline const void* ptr(const T* p) { return p; } -template <typename T> inline const void* ptr(const std::unique_ptr<T>& p) { - return p.get(); -} -template <typename T> inline const void* ptr(const std::shared_ptr<T>& p) { - return p.get(); -} - -template <typename It, typename Char> struct arg_join : internal::view { - It begin; - It end; - basic_string_view<Char> sep; - - arg_join(It b, It e, basic_string_view<Char> s) : begin(b), end(e), sep(s) {} -}; - -template <typename It, typename Char> -struct formatter<arg_join<It, Char>, Char> - : formatter<typename std::iterator_traits<It>::value_type, Char> { - template <typename FormatContext> - auto format(const arg_join<It, Char>& value, FormatContext& ctx) - -> decltype(ctx.out()) { - using base = formatter<typename std::iterator_traits<It>::value_type, Char>; - auto it = value.begin; - auto out = ctx.out(); - if (it != value.end) { - out = base::format(*it++, ctx); - while (it != value.end) { - out = std::copy(value.sep.begin(), value.sep.end(), out); - ctx.advance_to(out); - out = base::format(*it++, ctx); - } - } - return out; - } -}; - -/** - Returns an object that formats the iterator range `[begin, end)` with elements - separated by `sep`. - */ -template <typename It> -arg_join<It, char> join(It begin, It end, string_view sep) { - return {begin, end, sep}; -} - -template <typename It> -arg_join<It, wchar_t> join(It begin, It end, wstring_view sep) { - return {begin, end, sep}; -} - -/** - \rst - Returns an object that formats `range` with elements separated by `sep`. - - **Example**:: - - std::vector<int> v = {1, 2, 3}; - fmt::print("{}", fmt::join(v, ", ")); - // Output: "1, 2, 3" - \endrst - */ -template <typename Range> -arg_join<internal::iterator_t<const Range>, char> join(const Range& range, - string_view sep) { - return join(std::begin(range), std::end(range), sep); -} - -template <typename Range> -arg_join<internal::iterator_t<const Range>, wchar_t> join(const Range& range, - wstring_view sep) { - return join(std::begin(range), std::end(range), sep); -} - -/** - \rst - Converts *value* to ``std::string`` using the default format for type *T*. - It doesn't support user-defined types with custom formatters. - - **Example**:: - - #include <fmt/format.h> - - std::string answer = fmt::to_string(42); - \endrst - */ -template <typename T> inline std::string to_string(const T& value) { - return format("{}", value); -} - -/** - Converts *value* to ``std::wstring`` using the default format for type *T*. - */ -template <typename T> inline std::wstring to_wstring(const T& value) { - return format(L"{}", value); -} - -template <typename Char, std::size_t SIZE> -std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE>& buf) { - return std::basic_string<Char>(buf.data(), buf.size()); -} - -template <typename Char> -typename buffer_context<Char>::iterator internal::vformat_to( - internal::buffer<Char>& buf, basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args) { - using range = buffer_range<Char>; - return vformat_to<arg_formatter<range>>(buf, to_string_view(format_str), - args); -} - -template <typename S, typename Char = char_t<S>, - FMT_ENABLE_IF(internal::is_string<S>::value)> -inline typename buffer_context<Char>::iterator vformat_to( - internal::buffer<Char>& buf, const S& format_str, - basic_format_args<buffer_context<Char>> args) { - return internal::vformat_to(buf, to_string_view(format_str), args); -} - -template <typename S, typename... Args, std::size_t SIZE = inline_buffer_size, - typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>> -inline typename buffer_context<Char>::iterator format_to( - basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) { - internal::check_format_string<Args...>(format_str); - using context = buffer_context<Char>; - return internal::vformat_to(buf, to_string_view(format_str), - {make_format_args<context>(args...)}); -} - -template <typename OutputIt, typename Char = char> -using format_context_t = basic_format_context<OutputIt, Char>; - -template <typename OutputIt, typename Char = char> -using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>; - -template <typename S, typename OutputIt, typename... Args, - FMT_ENABLE_IF( - internal::is_output_iterator<OutputIt>::value && - !internal::is_contiguous_back_insert_iterator<OutputIt>::value)> -inline OutputIt vformat_to(OutputIt out, const S& format_str, - format_args_t<OutputIt, char_t<S>> args) { - using range = internal::output_range<OutputIt, char_t<S>>; - return vformat_to<arg_formatter<range>>(range(out), - to_string_view(format_str), args); -} - -/** - \rst - Formats arguments, writes the result to the output iterator ``out`` and returns - the iterator past the end of the output range. - - **Example**:: - - std::vector<char> out; - fmt::format_to(std::back_inserter(out), "{}", 42); - \endrst - */ -template <typename OutputIt, typename S, typename... Args, - FMT_ENABLE_IF( - internal::is_output_iterator<OutputIt>::value && - !internal::is_contiguous_back_insert_iterator<OutputIt>::value && - internal::is_string<S>::value)> -inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) { - internal::check_format_string<Args...>(format_str); - using context = format_context_t<OutputIt, char_t<S>>; - return vformat_to(out, to_string_view(format_str), - {make_format_args<context>(args...)}); -} - -template <typename OutputIt> struct format_to_n_result { - /** Iterator past the end of the output range. */ - OutputIt out; - /** Total (not truncated) output size. */ - std::size_t size; -}; - -template <typename OutputIt, typename Char = typename OutputIt::value_type> -using format_to_n_context = - format_context_t<fmt::internal::truncating_iterator<OutputIt>, Char>; - -template <typename OutputIt, typename Char = typename OutputIt::value_type> -using format_to_n_args = basic_format_args<format_to_n_context<OutputIt, Char>>; - -template <typename OutputIt, typename Char, typename... Args> -inline format_arg_store<format_to_n_context<OutputIt, Char>, Args...> -make_format_to_n_args(const Args&... args) { - return format_arg_store<format_to_n_context<OutputIt, Char>, Args...>( - args...); -} - -template <typename OutputIt, typename Char, typename... Args, - FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)> -inline format_to_n_result<OutputIt> vformat_to_n( - OutputIt out, std::size_t n, basic_string_view<Char> format_str, - format_to_n_args<OutputIt, Char> args) { - auto it = vformat_to(internal::truncating_iterator<OutputIt>(out, n), - format_str, args); - return {it.base(), it.count()}; -} - -/** - \rst - Formats arguments, writes up to ``n`` characters of the result to the output - iterator ``out`` and returns the total output size and the iterator past the - end of the output range. - \endrst - */ -template <typename OutputIt, typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value&& - internal::is_output_iterator<OutputIt>::value)> -inline format_to_n_result<OutputIt> format_to_n(OutputIt out, std::size_t n, - const S& format_str, - const Args&... args) { - internal::check_format_string<Args...>(format_str); - using context = format_to_n_context<OutputIt, char_t<S>>; - return vformat_to_n(out, n, to_string_view(format_str), - {make_format_args<context>(args...)}); -} - -template <typename Char> -inline std::basic_string<Char> internal::vformat( - basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args) { - basic_memory_buffer<Char> buffer; - internal::vformat_to(buffer, format_str, args); - return fmt::to_string(buffer); -} - -/** - Returns the number of characters in the output of - ``format(format_str, args...)``. - */ -template <typename... Args> -inline std::size_t formatted_size(string_view format_str, const Args&... args) { - auto it = format_to(internal::counting_iterator<char>(), format_str, args...); - return it.count(); -} - -#if FMT_USE_USER_DEFINED_LITERALS -namespace internal { - -# if FMT_USE_UDL_TEMPLATE -template <typename Char, Char... CHARS> class udl_formatter { - public: - template <typename... Args> - std::basic_string<Char> operator()(Args&&... args) const { - FMT_CONSTEXPR_DECL Char s[] = {CHARS..., '\0'}; - FMT_CONSTEXPR_DECL bool invalid_format = - do_check_format_string<Char, error_handler, Args...>( - basic_string_view<Char>(s, sizeof...(CHARS))); - (void)invalid_format; - return format(s, std::forward<Args>(args)...); - } -}; -# else -template <typename Char> struct udl_formatter { - basic_string_view<Char> str; - - template <typename... Args> - std::basic_string<Char> operator()(Args&&... args) const { - return format(str, std::forward<Args>(args)...); - } -}; -# endif // FMT_USE_UDL_TEMPLATE - -template <typename Char> struct udl_arg { - basic_string_view<Char> str; - - template <typename T> named_arg<T, Char> operator=(T&& value) const { - return {str, std::forward<T>(value)}; - } -}; - -} // namespace internal - -inline namespace literals { -# if FMT_USE_UDL_TEMPLATE -# pragma GCC diagnostic push -# if FMT_CLANG_VERSION -# pragma GCC diagnostic ignored "-Wgnu-string-literal-operator-template" -# endif -template <typename Char, Char... CHARS> -FMT_CONSTEXPR internal::udl_formatter<Char, CHARS...> operator""_format() { - return {}; -} -# pragma GCC diagnostic pop -# else -/** - \rst - User-defined literal equivalent of :func:`fmt::format`. - - **Example**:: - - using namespace fmt::literals; - std::string message = "The answer is {}"_format(42); - \endrst - */ -FMT_CONSTEXPR internal::udl_formatter<char> operator"" _format(const char* s, - std::size_t n) { - return {{s, n}}; -} -FMT_CONSTEXPR internal::udl_formatter<wchar_t> operator"" _format( - const wchar_t* s, std::size_t n) { - return {{s, n}}; -} -# endif // FMT_USE_UDL_TEMPLATE - -/** - \rst - User-defined literal equivalent of :func:`fmt::arg`. - - **Example**:: - - using namespace fmt::literals; - fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); - \endrst - */ -FMT_CONSTEXPR internal::udl_arg<char> operator"" _a(const char* s, - std::size_t n) { - return {{s, n}}; -} -FMT_CONSTEXPR internal::udl_arg<wchar_t> operator"" _a(const wchar_t* s, - std::size_t n) { - return {{s, n}}; -} -} // namespace literals -#endif // FMT_USE_USER_DEFINED_LITERALS -FMT_END_NAMESPACE - -/** - \rst - Constructs a compile-time format string. - - **Example**:: - - // A compile-time error because 'd' is an invalid specifier for strings. - std::string s = format(FMT_STRING("{:d}"), "foo"); - \endrst - */ -#define FMT_STRING(s) \ - [] { \ - struct str : fmt::compile_string { \ - using char_type = typename std::remove_cv<std::remove_pointer< \ - typename std::decay<decltype(s)>::type>::type>::type; \ - FMT_CONSTEXPR operator fmt::basic_string_view<char_type>() const { \ - return {s, sizeof(s) / sizeof(char_type) - 1}; \ - } \ - } result; \ - /* Suppress Qt Creator warning about unused operator. */ \ - (void)static_cast<fmt::basic_string_view<typename str::char_type>>( \ - result); \ - return result; \ - }() - -#if defined(FMT_STRING_ALIAS) && FMT_STRING_ALIAS -/** - \rst - Constructs a compile-time format string. This macro is disabled by default to - prevent potential name collisions. To enable it define ``FMT_STRING_ALIAS`` to - 1 before including ``fmt/format.h``. - - **Example**:: - - #define FMT_STRING_ALIAS 1 - #include <fmt/format.h> - // A compile-time error because 'd' is an invalid specifier for strings. - std::string s = format(fmt("{:d}"), "foo"); - \endrst - */ -# define fmt(s) FMT_STRING(s) -#endif - -#ifdef FMT_HEADER_ONLY -# define FMT_FUNC inline -# include "format-inl.h" -#else -# define FMT_FUNC -#endif - -#endif // FMT_FORMAT_H_ diff --git a/deps/fmt/fmt/locale.h b/deps/fmt/fmt/locale.h deleted file mode 100644 index 7c13656e4f..0000000000 --- a/deps/fmt/fmt/locale.h +++ /dev/null @@ -1,77 +0,0 @@ -// Formatting library for C++ - std::locale support -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_LOCALE_H_ -#define FMT_LOCALE_H_ - -#include <locale> -#include "format.h" - -FMT_BEGIN_NAMESPACE - -namespace internal { -template <typename Char> -typename buffer_context<Char>::iterator vformat_to( - const std::locale& loc, buffer<Char>& buf, - basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args) { - using range = buffer_range<Char>; - return vformat_to<arg_formatter<range>>(buf, to_string_view(format_str), args, - internal::locale_ref(loc)); -} - -template <typename Char> -std::basic_string<Char> vformat(const std::locale& loc, - basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args) { - basic_memory_buffer<Char> buffer; - internal::vformat_to(loc, buffer, format_str, args); - return fmt::to_string(buffer); -} -} // namespace internal - -template <typename S, typename Char = char_t<S>> -inline std::basic_string<Char> vformat( - const std::locale& loc, const S& format_str, - basic_format_args<buffer_context<Char>> args) { - return internal::vformat(loc, to_string_view(format_str), args); -} - -template <typename S, typename... Args, typename Char = char_t<S>> -inline std::basic_string<Char> format(const std::locale& loc, - const S& format_str, Args&&... args) { - return internal::vformat( - loc, to_string_view(format_str), - {internal::make_args_checked<Args...>(format_str, args...)}); -} - -template <typename S, typename OutputIt, typename... Args, - typename Char = enable_if_t< - internal::is_output_iterator<OutputIt>::value, char_t<S>>> -inline OutputIt vformat_to(OutputIt out, const std::locale& loc, - const S& format_str, - format_args_t<OutputIt, Char> args) { - using range = internal::output_range<OutputIt, Char>; - return vformat_to<arg_formatter<range>>( - range(out), to_string_view(format_str), args, internal::locale_ref(loc)); -} - -template <typename OutputIt, typename S, typename... Args, - FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value&& - internal::is_string<S>::value)> -inline OutputIt format_to(OutputIt out, const std::locale& loc, - const S& format_str, Args&&... args) { - internal::check_format_string<Args...>(format_str); - using context = format_context_t<OutputIt, char_t<S>>; - format_arg_store<context, Args...> as{args...}; - return vformat_to(out, loc, to_string_view(format_str), - basic_format_args<context>(as)); -} - -FMT_END_NAMESPACE - -#endif // FMT_LOCALE_H_ diff --git a/deps/fmt/fmt/posix.h b/deps/fmt/fmt/posix.h deleted file mode 100644 index 6b2d7f8e4c..0000000000 --- a/deps/fmt/fmt/posix.h +++ /dev/null @@ -1,311 +0,0 @@ -// A C++ interface to POSIX functions. -// -// Copyright (c) 2012 - 2016, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_POSIX_H_ -#define FMT_POSIX_H_ - -#if defined(__MINGW32__) || defined(__CYGWIN__) -// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/. -# undef __STRICT_ANSI__ -#endif - -#include <errno.h> -#include <fcntl.h> // for O_RDONLY -#include <locale.h> // for locale_t -#include <stdio.h> -#include <stdlib.h> // for strtod_l - -#include <cstddef> - -#if defined __APPLE__ || defined(__FreeBSD__) -# include <xlocale.h> // for LC_NUMERIC_MASK on OS X -#endif - -#include "format.h" - -#ifndef FMT_POSIX -# if defined(_WIN32) && !defined(__MINGW32__) -// Fix warnings about deprecated symbols. -# define FMT_POSIX(call) _##call -# else -# define FMT_POSIX(call) call -# endif -#endif - -// Calls to system functions are wrapped in FMT_SYSTEM for testability. -#ifdef FMT_SYSTEM -# define FMT_POSIX_CALL(call) FMT_SYSTEM(call) -#else -# define FMT_SYSTEM(call) call -# ifdef _WIN32 -// Fix warnings about deprecated symbols. -# define FMT_POSIX_CALL(call) ::_##call -# else -# define FMT_POSIX_CALL(call) ::call -# endif -#endif - -// Retries the expression while it evaluates to error_result and errno -// equals to EINTR. -#ifndef _WIN32 -# define FMT_RETRY_VAL(result, expression, error_result) \ - do { \ - result = (expression); \ - } while (result == error_result && errno == EINTR) -#else -# define FMT_RETRY_VAL(result, expression, error_result) result = (expression) -#endif - -#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) - -FMT_BEGIN_NAMESPACE - -/** - \rst - A reference to a null-terminated string. It can be constructed from a C - string or ``std::string``. - - You can use one of the following type aliases for common character types: - - +---------------+-----------------------------+ - | Type | Definition | - +===============+=============================+ - | cstring_view | basic_cstring_view<char> | - +---------------+-----------------------------+ - | wcstring_view | basic_cstring_view<wchar_t> | - +---------------+-----------------------------+ - - This class is most useful as a parameter type to allow passing - different types of strings to a function, for example:: - - template <typename... Args> - std::string format(cstring_view format_str, const Args & ... args); - - format("{}", 42); - format(std::string("{}"), 42); - \endrst - */ -template <typename Char> class basic_cstring_view { - private: - const Char* data_; - - public: - /** Constructs a string reference object from a C string. */ - basic_cstring_view(const Char* s) : data_(s) {} - - /** - \rst - Constructs a string reference from an ``std::string`` object. - \endrst - */ - basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {} - - /** Returns the pointer to a C string. */ - const Char* c_str() const { return data_; } -}; - -using cstring_view = basic_cstring_view<char>; -using wcstring_view = basic_cstring_view<wchar_t>; - -// An error code. -class error_code { - private: - int value_; - - public: - explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {} - - int get() const FMT_NOEXCEPT { return value_; } -}; - -// A buffered file. -class buffered_file { - private: - FILE* file_; - - friend class file; - - explicit buffered_file(FILE* f) : file_(f) {} - - public: - // Constructs a buffered_file object which doesn't represent any file. - buffered_file() FMT_NOEXCEPT : file_(nullptr) {} - - // Destroys the object closing the file it represents if any. - FMT_API ~buffered_file() FMT_NOEXCEPT; - - private: - buffered_file(const buffered_file&) = delete; - void operator=(const buffered_file&) = delete; - - public: - buffered_file(buffered_file&& other) FMT_NOEXCEPT : file_(other.file_) { - other.file_ = nullptr; - } - - buffered_file& operator=(buffered_file&& other) { - close(); - file_ = other.file_; - other.file_ = nullptr; - return *this; - } - - // Opens a file. - FMT_API buffered_file(cstring_view filename, cstring_view mode); - - // Closes the file. - FMT_API void close(); - - // Returns the pointer to a FILE object representing this file. - FILE* get() const FMT_NOEXCEPT { return file_; } - - // We place parentheses around fileno to workaround a bug in some versions - // of MinGW that define fileno as a macro. - FMT_API int(fileno)() const; - - void vprint(string_view format_str, format_args args) { - fmt::vprint(file_, format_str, args); - } - - template <typename... Args> - inline void print(string_view format_str, const Args&... args) { - vprint(format_str, make_format_args(args...)); - } -}; - -// A file. Closed file is represented by a file object with descriptor -1. -// Methods that are not declared with FMT_NOEXCEPT may throw -// fmt::system_error in case of failure. Note that some errors such as -// closing the file multiple times will cause a crash on Windows rather -// than an exception. You can get standard behavior by overriding the -// invalid parameter handler with _set_invalid_parameter_handler. -class file { - private: - int fd_; // File descriptor. - - // Constructs a file object with a given descriptor. - explicit file(int fd) : fd_(fd) {} - - public: - // Possible values for the oflag argument to the constructor. - enum { - RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. - WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. - RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing. - }; - - // Constructs a file object which doesn't represent any file. - file() FMT_NOEXCEPT : fd_(-1) {} - - // Opens a file and constructs a file object representing this file. - FMT_API file(cstring_view path, int oflag); - - private: - file(const file&) = delete; - void operator=(const file&) = delete; - - public: - file(file&& other) FMT_NOEXCEPT : fd_(other.fd_) { other.fd_ = -1; } - - file& operator=(file&& other) { - close(); - fd_ = other.fd_; - other.fd_ = -1; - return *this; - } - - // Destroys the object closing the file it represents if any. - FMT_API ~file() FMT_NOEXCEPT; - - // Returns the file descriptor. - int descriptor() const FMT_NOEXCEPT { return fd_; } - - // Closes the file. - FMT_API void close(); - - // Returns the file size. The size has signed type for consistency with - // stat::st_size. - FMT_API long long size() const; - - // Attempts to read count bytes from the file into the specified buffer. - FMT_API std::size_t read(void* buffer, std::size_t count); - - // Attempts to write count bytes from the specified buffer to the file. - FMT_API std::size_t write(const void* buffer, std::size_t count); - - // Duplicates a file descriptor with the dup function and returns - // the duplicate as a file object. - FMT_API static file dup(int fd); - - // Makes fd be the copy of this file descriptor, closing fd first if - // necessary. - FMT_API void dup2(int fd); - - // Makes fd be the copy of this file descriptor, closing fd first if - // necessary. - FMT_API void dup2(int fd, error_code& ec) FMT_NOEXCEPT; - - // Creates a pipe setting up read_end and write_end file objects for reading - // and writing respectively. - FMT_API static void pipe(file& read_end, file& write_end); - - // Creates a buffered_file object associated with this file and detaches - // this file object from the file. - FMT_API buffered_file fdopen(const char* mode); -}; - -// Returns the memory page size. -long getpagesize(); - -#ifdef FMT_LOCALE -// A "C" numeric locale. -class Locale { - private: -# ifdef _WIN32 - using locale_t = _locale_t; - - enum { LC_NUMERIC_MASK = LC_NUMERIC }; - - static locale_t newlocale(int category_mask, const char* locale, locale_t) { - return _create_locale(category_mask, locale); - } - - static void freelocale(locale_t locale) { _free_locale(locale); } - - static double strtod_l(const char* nptr, char** endptr, _locale_t locale) { - return _strtod_l(nptr, endptr, locale); - } -# endif - - locale_t locale_; - - Locale(const Locale&) = delete; - void operator=(const Locale&) = delete; - - public: - using type = locale_t; - - Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", nullptr)) { - if (!locale_) FMT_THROW(system_error(errno, "cannot create locale")); - } - ~Locale() { freelocale(locale_); } - - type get() const { return locale_; } - - // Converts string to floating-point number and advances str past the end - // of the parsed input. - double strtod(const char*& str) const { - char* end = nullptr; - double result = strtod_l(str, &end, locale_); - str = end; - return result; - } -}; -#endif // FMT_LOCALE -FMT_END_NAMESPACE - -#endif // FMT_POSIX_H_ diff --git a/deps/fmt/fmt/ranges.h b/deps/fmt/fmt/ranges.h deleted file mode 100644 index e6540108f7..0000000000 --- a/deps/fmt/fmt/ranges.h +++ /dev/null @@ -1,285 +0,0 @@ -// Formatting library for C++ - experimental range support -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. -// -// Copyright (c) 2018 - present, Remotion (Igor Schulz) -// All Rights Reserved -// {fmt} support for ranges, containers and types tuple interface. - -#ifndef FMT_RANGES_H_ -#define FMT_RANGES_H_ - -#include <type_traits> -#include "format.h" - -// output only up to N items from the range. -#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT -# define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256 -#endif - -FMT_BEGIN_NAMESPACE - -template <typename Char> struct formatting_base { - template <typename ParseContext> - FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - return ctx.begin(); - } -}; - -template <typename Char, typename Enable = void> -struct formatting_range : formatting_base<Char> { - static FMT_CONSTEXPR_DECL const std::size_t range_length_limit = - FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the - // range. - Char prefix; - Char delimiter; - Char postfix; - formatting_range() : prefix('{'), delimiter(','), postfix('}') {} - static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; - static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; -}; - -template <typename Char, typename Enable = void> -struct formatting_tuple : formatting_base<Char> { - Char prefix; - Char delimiter; - Char postfix; - formatting_tuple() : prefix('('), delimiter(','), postfix(')') {} - static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; - static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; -}; - -namespace internal { - -template <typename RangeT, typename OutputIterator> -OutputIterator copy(const RangeT& range, OutputIterator out) { - for (auto it = range.begin(), end = range.end(); it != end; ++it) - *out++ = *it; - return out; -} - -template <typename OutputIterator> -OutputIterator copy(const char* str, OutputIterator out) { - while (*str) *out++ = *str++; - return out; -} - -template <typename OutputIterator> -OutputIterator copy(char ch, OutputIterator out) { - *out++ = ch; - return out; -} - -/// Return true value if T has std::string interface, like std::string_view. -template <typename T> class is_like_std_string { - template <typename U> - static auto check(U* p) - -> decltype((void)p->find('a'), p->length(), (void)p->data(), int()); - template <typename> static void check(...); - - public: - static FMT_CONSTEXPR_DECL const bool value = - is_string<T>::value || !std::is_void<decltype(check<T>(nullptr))>::value; -}; - -template <typename Char> -struct is_like_std_string<fmt::basic_string_view<Char>> : std::true_type {}; - -template <typename... Ts> struct conditional_helper {}; - -template <typename T, typename _ = void> struct is_range_ : std::false_type {}; - -#if !FMT_MSC_VER || FMT_MSC_VER > 1800 -template <typename T> -struct is_range_< - T, conditional_t<false, - conditional_helper<decltype(std::declval<T>().begin()), - decltype(std::declval<T>().end())>, - void>> : std::true_type {}; -#endif - -/// tuple_size and tuple_element check. -template <typename T> class is_tuple_like_ { - template <typename U> - static auto check(U* p) - -> decltype(std::tuple_size<U>::value, - (void)std::declval<typename std::tuple_element<0, U>::type>(), - int()); - template <typename> static void check(...); - - public: - static FMT_CONSTEXPR_DECL const bool value = - !std::is_void<decltype(check<T>(nullptr))>::value; -}; - -// Check for integer_sequence -#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900 -template <typename T, T... N> -using integer_sequence = std::integer_sequence<T, N...>; -template <std::size_t... N> using index_sequence = std::index_sequence<N...>; -template <std::size_t N> -using make_index_sequence = std::make_index_sequence<N>; -#else -template <typename T, T... N> struct integer_sequence { - using value_type = T; - - static FMT_CONSTEXPR std::size_t size() { return sizeof...(N); } -}; - -template <std::size_t... N> -using index_sequence = integer_sequence<std::size_t, N...>; - -template <typename T, std::size_t N, T... Ns> -struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {}; -template <typename T, T... Ns> -struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {}; - -template <std::size_t N> -using make_index_sequence = make_integer_sequence<std::size_t, N>; -#endif - -template <class Tuple, class F, size_t... Is> -void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) FMT_NOEXCEPT { - using std::get; - // using free function get<I>(T) now. - const int _[] = {0, ((void)f(get<Is>(tup)), 0)...}; - (void)_; // blocks warnings -} - -template <class T> -FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes( - T const&) { - return {}; -} - -template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) { - const auto indexes = get_indexes(tup); - for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f)); -} - -template <typename Arg, FMT_ENABLE_IF(!is_like_std_string< - typename std::decay<Arg>::type>::value)> -FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) { - return add_space ? " {}" : "{}"; -} - -template <typename Arg, FMT_ENABLE_IF(is_like_std_string< - typename std::decay<Arg>::type>::value)> -FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) { - return add_space ? " \"{}\"" : "\"{}\""; -} - -FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char*) { - return add_space ? " \"{}\"" : "\"{}\""; -} -FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t*) { - return add_space ? L" \"{}\"" : L"\"{}\""; -} - -FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char) { - return add_space ? " '{}'" : "'{}'"; -} -FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) { - return add_space ? L" '{}'" : L"'{}'"; -} - -} // namespace internal - -template <typename T> struct is_tuple_like { - static FMT_CONSTEXPR_DECL const bool value = - internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value; -}; - -template <typename TupleT, typename Char> -struct formatter<TupleT, Char, enable_if_t<fmt::is_tuple_like<TupleT>::value>> { - private: - // C++11 generic lambda for format() - template <typename FormatContext> struct format_each { - template <typename T> void operator()(const T& v) { - if (i > 0) { - if (formatting.add_prepostfix_space) { - *out++ = ' '; - } - out = internal::copy(formatting.delimiter, out); - } - out = format_to(out, - internal::format_str_quoted( - (formatting.add_delimiter_spaces && i > 0), v), - v); - ++i; - } - - formatting_tuple<Char>& formatting; - std::size_t& i; - typename std::add_lvalue_reference<decltype( - std::declval<FormatContext>().out())>::type out; - }; - - public: - formatting_tuple<Char> formatting; - - template <typename ParseContext> - FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - return formatting.parse(ctx); - } - - template <typename FormatContext = format_context> - auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) { - auto out = ctx.out(); - std::size_t i = 0; - internal::copy(formatting.prefix, out); - - internal::for_each(values, format_each<FormatContext>{formatting, i, out}); - if (formatting.add_prepostfix_space) { - *out++ = ' '; - } - internal::copy(formatting.postfix, out); - - return ctx.out(); - } -}; - -template <typename T> struct is_range { - static FMT_CONSTEXPR_DECL const bool value = - internal::is_range_<T>::value && !internal::is_like_std_string<T>::value; -}; - -template <typename RangeT, typename Char> -struct formatter<RangeT, Char, enable_if_t<fmt::is_range<RangeT>::value>> { - formatting_range<Char> formatting; - - template <typename ParseContext> - FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - return formatting.parse(ctx); - } - - template <typename FormatContext> - typename FormatContext::iterator format(const RangeT& values, - FormatContext& ctx) { - auto out = internal::copy(formatting.prefix, ctx.out()); - std::size_t i = 0; - for (auto it = values.begin(), end = values.end(); it != end; ++it) { - if (i > 0) { - if (formatting.add_prepostfix_space) *out++ = ' '; - out = internal::copy(formatting.delimiter, out); - } - out = format_to(out, - internal::format_str_quoted( - (formatting.add_delimiter_spaces && i > 0), *it), - *it); - if (++i > formatting.range_length_limit) { - out = format_to(out, " ... <other elements>"); - break; - } - } - if (formatting.add_prepostfix_space) *out++ = ' '; - return internal::copy(formatting.postfix, out); - } -}; - -FMT_END_NAMESPACE - -#endif // FMT_RANGES_H_ diff --git a/deps/fmt/fmt/safe-duration-cast.h b/deps/fmt/fmt/safe-duration-cast.h deleted file mode 100644 index d0719512b2..0000000000 --- a/deps/fmt/fmt/safe-duration-cast.h +++ /dev/null @@ -1,293 +0,0 @@ -/* - * For conversion between std::chrono::durations without undefined - * behaviour or erroneous results. - * This is a stripped down version of duration_cast, for inclusion in fmt. - * See https://github.com/pauldreik/safe_duration_cast - * - * Copyright Paul Dreik 2019 - * - * This file is licensed under the fmt license, see format.h - */ - -#include <chrono> -#include <cmath> -#include <limits> -#include <type_traits> - -#include "format.h" - -FMT_BEGIN_NAMESPACE - -namespace safe_duration_cast { - -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value && - std::numeric_limits<From>::is_signed == - std::numeric_limits<To>::is_signed)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - using F = std::numeric_limits<From>; - using T = std::numeric_limits<To>; - static_assert(F::is_integer, "From must be integral"); - static_assert(T::is_integer, "To must be integral"); - - // A and B are both signed, or both unsigned. - if (F::digits <= T::digits) { - // From fits in To without any problem. - } else { - // From does not always fit in To, resort to a dynamic check. - if (from < T::min() || from > T::max()) { - // outside range. - ec = 1; - return {}; - } - } - return static_cast<To>(from); -} - -/** - * converts From to To, without loss. If the dynamic value of from - * can't be converted to To without loss, ec is set. - */ -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value && - std::numeric_limits<From>::is_signed != - std::numeric_limits<To>::is_signed)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - using F = std::numeric_limits<From>; - using T = std::numeric_limits<To>; - static_assert(F::is_integer, "From must be integral"); - static_assert(T::is_integer, "To must be integral"); - - if (F::is_signed && !T::is_signed) { - // From may be negative, not allowed! - if (from < 0) { - ec = 1; - return {}; - } - - // From is positive. Can it always fit in To? - if (F::digits <= T::digits) { - // yes, From always fits in To. - } else { - // from may not fit in To, we have to do a dynamic check - if (from > T::max()) { - ec = 1; - return {}; - } - } - } - - if (!F::is_signed && T::is_signed) { - // can from be held in To? - if (F::digits < T::digits) { - // yes, From always fits in To. - } else { - // from may not fit in To, we have to do a dynamic check - if (from > T::max()) { - // outside range. - ec = 1; - return {}; - } - } - } - - // reaching here means all is ok for lossless conversion. - return static_cast<To>(from); - -} // function - -template <typename To, typename From, - FMT_ENABLE_IF(std::is_same<From, To>::value)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - return from; -} // function - -// clang-format off -/** - * converts From to To if possible, otherwise ec is set. - * - * input | output - * ---------------------------------|--------------- - * NaN | NaN - * Inf | Inf - * normal, fits in output | converted (possibly lossy) - * normal, does not fit in output | ec is set - * subnormal | best effort - * -Inf | -Inf - */ -// clang-format on -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value)> -FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { - ec = 0; - using T = std::numeric_limits<To>; - static_assert(std::is_floating_point<From>::value, "From must be floating"); - static_assert(std::is_floating_point<To>::value, "To must be floating"); - - // catch the only happy case - if (std::isfinite(from)) { - if (from >= T::lowest() && from <= T::max()) { - return static_cast<To>(from); - } - // not within range. - ec = 1; - return {}; - } - - // nan and inf will be preserved - return static_cast<To>(from); -} // function - -template <typename To, typename From, - FMT_ENABLE_IF(std::is_same<From, To>::value)> -FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { - ec = 0; - static_assert(std::is_floating_point<From>::value, "From must be floating"); - return from; -} - -/** - * safe duration cast between integral durations - */ -template <typename To, typename FromRep, typename FromPeriod, - FMT_ENABLE_IF(std::is_integral<FromRep>::value), - FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)> -To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, - int& ec) { - using From = std::chrono::duration<FromRep, FromPeriod>; - ec = 0; - // the basic idea is that we need to convert from count() in the from type - // to count() in the To type, by multiplying it with this: - using Factor = std::ratio_divide<typename From::period, typename To::period>; - - static_assert(Factor::num > 0, "num must be positive"); - static_assert(Factor::den > 0, "den must be positive"); - - // the conversion is like this: multiply from.count() with Factor::num - // /Factor::den and convert it to To::rep, all this without - // overflow/underflow. let's start by finding a suitable type that can hold - // both To, From and Factor::num - using IntermediateRep = - typename std::common_type<typename From::rep, typename To::rep, - decltype(Factor::num)>::type; - - // safe conversion to IntermediateRep - IntermediateRep count = - lossless_integral_conversion<IntermediateRep>(from.count(), ec); - if (ec) { - return {}; - } - // multiply with Factor::num without overflow or underflow - if (Factor::num != 1) { - constexpr auto max1 = - std::numeric_limits<IntermediateRep>::max() / Factor::num; - if (count > max1) { - ec = 1; - return {}; - } - constexpr auto min1 = - std::numeric_limits<IntermediateRep>::min() / Factor::num; - if (count < min1) { - ec = 1; - return {}; - } - count *= Factor::num; - } - - // this can't go wrong, right? den>0 is checked earlier. - if (Factor::den != 1) { - count /= Factor::den; - } - // convert to the to type, safely - using ToRep = typename To::rep; - const ToRep tocount = lossless_integral_conversion<ToRep>(count, ec); - if (ec) { - return {}; - } - return To{tocount}; -} - -/** - * safe duration_cast between floating point durations - */ -template <typename To, typename FromRep, typename FromPeriod, - FMT_ENABLE_IF(std::is_floating_point<FromRep>::value), - FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)> -To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, - int& ec) { - using From = std::chrono::duration<FromRep, FromPeriod>; - ec = 0; - if (std::isnan(from.count())) { - // nan in, gives nan out. easy. - return To{std::numeric_limits<typename To::rep>::quiet_NaN()}; - } - // maybe we should also check if from is denormal, and decide what to do about - // it. - - // +-inf should be preserved. - if (std::isinf(from.count())) { - return To{from.count()}; - } - - // the basic idea is that we need to convert from count() in the from type - // to count() in the To type, by multiplying it with this: - using Factor = std::ratio_divide<typename From::period, typename To::period>; - - static_assert(Factor::num > 0, "num must be positive"); - static_assert(Factor::den > 0, "den must be positive"); - - // the conversion is like this: multiply from.count() with Factor::num - // /Factor::den and convert it to To::rep, all this without - // overflow/underflow. let's start by finding a suitable type that can hold - // both To, From and Factor::num - using IntermediateRep = - typename std::common_type<typename From::rep, typename To::rep, - decltype(Factor::num)>::type; - - // force conversion of From::rep -> IntermediateRep to be safe, - // even if it will never happen be narrowing in this context. - IntermediateRep count = - safe_float_conversion<IntermediateRep>(from.count(), ec); - if (ec) { - return {}; - } - - // multiply with Factor::num without overflow or underflow - if (Factor::num != 1) { - constexpr auto max1 = std::numeric_limits<IntermediateRep>::max() / - static_cast<IntermediateRep>(Factor::num); - if (count > max1) { - ec = 1; - return {}; - } - constexpr auto min1 = std::numeric_limits<IntermediateRep>::lowest() / - static_cast<IntermediateRep>(Factor::num); - if (count < min1) { - ec = 1; - return {}; - } - count *= static_cast<IntermediateRep>(Factor::num); - } - - // this can't go wrong, right? den>0 is checked earlier. - if (Factor::den != 1) { - using common_t = typename std::common_type<IntermediateRep, intmax_t>::type; - count /= static_cast<common_t>(Factor::den); - } - - // convert to the to type, safely - using ToRep = typename To::rep; - - const ToRep tocount = safe_float_conversion<ToRep>(count, ec); - if (ec) { - return {}; - } - return To{tocount}; -} - -} // namespace safe_duration_cast - -FMT_END_NAMESPACE diff --git a/deps/fmt/include/fmt/args.h b/deps/fmt/include/fmt/args.h new file mode 100644 index 0000000000..562e8ab111 --- /dev/null +++ b/deps/fmt/include/fmt/args.h @@ -0,0 +1,232 @@ +// Formatting library for C++ - dynamic format arguments +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_ARGS_H_ +#define FMT_ARGS_H_ + +#include <functional> // std::reference_wrapper +#include <memory> // std::unique_ptr +#include <vector> + +#include "core.h" + +FMT_BEGIN_NAMESPACE + +namespace detail { + +template <typename T> struct is_reference_wrapper : std::false_type {}; +template <typename T> +struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {}; + +template <typename T> const T& unwrap(const T& v) { return v; } +template <typename T> const T& unwrap(const std::reference_wrapper<T>& v) { + return static_cast<const T&>(v); +} + +class dynamic_arg_list { + // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for + // templates it doesn't complain about inability to deduce single translation + // unit for placing vtable. So storage_node_base is made a fake template. + template <typename = void> struct node { + virtual ~node() = default; + std::unique_ptr<node<>> next; + }; + + template <typename T> struct typed_node : node<> { + T value; + + template <typename Arg> + FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} + + template <typename Char> + FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg) + : value(arg.data(), arg.size()) {} + }; + + std::unique_ptr<node<>> head_; + + public: + template <typename T, typename Arg> const T& push(const Arg& arg) { + auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg)); + auto& value = new_node->value; + new_node->next = std::move(head_); + head_ = std::move(new_node); + return value; + } +}; +} // namespace detail + +/** + \rst + A dynamic version of `fmt::format_arg_store`. + It's equipped with a storage to potentially temporary objects which lifetimes + could be shorter than the format arguments object. + + It can be implicitly converted into `~fmt::basic_format_args` for passing + into type-erased formatting functions such as `~fmt::vformat`. + \endrst + */ +template <typename Context> +class dynamic_format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + using char_type = typename Context::char_type; + + template <typename T> struct need_copy { + static constexpr detail::type mapped_type = + detail::mapped_type_constant<T, Context>::value; + + enum { + value = !(detail::is_reference_wrapper<T>::value || + std::is_same<T, basic_string_view<char_type>>::value || + std::is_same<T, detail::std_string_view<char_type>>::value || + (mapped_type != detail::type::cstring_type && + mapped_type != detail::type::string_type && + mapped_type != detail::type::custom_type)) + }; + }; + + template <typename T> + using stored_type = conditional_t<detail::is_string<T>::value && + !has_formatter<T, Context>::value && + !detail::is_reference_wrapper<T>::value, + std::basic_string<char_type>, T>; + + // Storage of basic_format_arg must be contiguous. + std::vector<basic_format_arg<Context>> data_; + std::vector<detail::named_arg_info<char_type>> named_info_; + + // Storage of arguments not fitting into basic_format_arg must grow + // without relocation because items in data_ refer to it. + detail::dynamic_arg_list dynamic_args_; + + friend class basic_format_args<Context>; + + unsigned long long get_types() const { + return detail::is_unpacked_bit | data_.size() | + (named_info_.empty() + ? 0ULL + : static_cast<unsigned long long>(detail::has_named_args_bit)); + } + + const basic_format_arg<Context>* data() const { + return named_info_.empty() ? data_.data() : data_.data() + 1; + } + + template <typename T> void emplace_arg(const T& arg) { + data_.emplace_back(detail::make_arg<Context>(arg)); + } + + template <typename T> + void emplace_arg(const detail::named_arg<char_type, T>& arg) { + if (named_info_.empty()) { + constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr}; + data_.insert(data_.begin(), {zero_ptr, 0}); + } + data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value))); + auto pop_one = [](std::vector<basic_format_arg<Context>>* data) { + data->pop_back(); + }; + std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)> + guard{&data_, pop_one}; + named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)}); + data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; + guard.release(); + } + + public: + /** + \rst + Adds an argument into the dynamic store for later passing to a formatting + function. + + Note that custom types and string types (but not string views) are copied + into the store dynamically allocating memory if necessary. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(42); + store.push_back("abc"); + store.push_back(1.5f); + std::string result = fmt::vformat("{} and {} and {}", store); + \endrst + */ + template <typename T> void push_back(const T& arg) { + if (detail::const_check(need_copy<T>::value)) + emplace_arg(dynamic_args_.push<stored_type<T>>(arg)); + else + emplace_arg(detail::unwrap(arg)); + } + + /** + \rst + Adds a reference to the argument into the dynamic store for later passing to + a formatting function. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + char band[] = "Rolling Stones"; + store.push_back(std::cref(band)); + band[9] = 'c'; // Changing str affects the output. + std::string result = fmt::vformat("{}", store); + // result == "Rolling Scones" + \endrst + */ + template <typename T> void push_back(std::reference_wrapper<T> arg) { + static_assert( + need_copy<T>::value, + "objects of built-in types and string views are always copied"); + emplace_arg(arg.get()); + } + + /** + Adds named argument into the dynamic store for later passing to a formatting + function. ``std::reference_wrapper`` is supported to avoid copying of the + argument. The name is always copied into the store. + */ + template <typename T> + void push_back(const detail::named_arg<char_type, T>& arg) { + const char_type* arg_name = + dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str(); + if (detail::const_check(need_copy<T>::value)) { + emplace_arg( + fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value))); + } else { + emplace_arg(fmt::arg(arg_name, arg.value)); + } + } + + /** Erase all elements from the store */ + void clear() { + data_.clear(); + named_info_.clear(); + dynamic_args_ = detail::dynamic_arg_list(); + } + + /** + \rst + Reserves space to store at least *new_cap* arguments including + *new_cap_named* named arguments. + \endrst + */ + void reserve(size_t new_cap, size_t new_cap_named) { + FMT_ASSERT(new_cap >= new_cap_named, + "Set of arguments includes set of named arguments"); + data_.reserve(new_cap); + named_info_.reserve(new_cap_named); + } +}; + +FMT_END_NAMESPACE + +#endif // FMT_ARGS_H_ diff --git a/deps/fmt/include/fmt/chrono.h b/deps/fmt/include/fmt/chrono.h new file mode 100644 index 0000000000..e26e519039 --- /dev/null +++ b/deps/fmt/include/fmt/chrono.h @@ -0,0 +1,1203 @@ +// Formatting library for C++ - chrono support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CHRONO_H_ +#define FMT_CHRONO_H_ + +#include <algorithm> +#include <chrono> +#include <ctime> +#include <locale> +#include <sstream> + +#include "format.h" +#include "locale.h" + +FMT_BEGIN_NAMESPACE + +// Enable safe chrono durations, unless explicitly disabled. +#ifndef FMT_SAFE_DURATION_CAST +# define FMT_SAFE_DURATION_CAST 1 +#endif +#if FMT_SAFE_DURATION_CAST + +// For conversion between std::chrono::durations without undefined +// behaviour or erroneous results. +// This is a stripped down version of duration_cast, for inclusion in fmt. +// See https://github.com/pauldreik/safe_duration_cast +// +// Copyright Paul Dreik 2019 +namespace safe_duration_cast { + +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value && + std::numeric_limits<From>::is_signed == + std::numeric_limits<To>::is_signed)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + using F = std::numeric_limits<From>; + using T = std::numeric_limits<To>; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + // A and B are both signed, or both unsigned. + if (F::digits <= T::digits) { + // From fits in To without any problem. + } else { + // From does not always fit in To, resort to a dynamic check. + if (from < (T::min)() || from > (T::max)()) { + // outside range. + ec = 1; + return {}; + } + } + return static_cast<To>(from); +} + +/** + * converts From to To, without loss. If the dynamic value of from + * can't be converted to To without loss, ec is set. + */ +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value && + std::numeric_limits<From>::is_signed != + std::numeric_limits<To>::is_signed)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + using F = std::numeric_limits<From>; + using T = std::numeric_limits<To>; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + if (detail::const_check(F::is_signed && !T::is_signed)) { + // From may be negative, not allowed! + if (fmt::detail::is_negative(from)) { + ec = 1; + return {}; + } + // From is positive. Can it always fit in To? + if (F::digits > T::digits && + from > static_cast<From>(detail::max_value<To>())) { + ec = 1; + return {}; + } + } + + if (!F::is_signed && T::is_signed && F::digits >= T::digits && + from > static_cast<From>(detail::max_value<To>())) { + ec = 1; + return {}; + } + return static_cast<To>(from); // Lossless conversion. +} + +template <typename To, typename From, + FMT_ENABLE_IF(std::is_same<From, To>::value)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + return from; +} // function + +// clang-format off +/** + * converts From to To if possible, otherwise ec is set. + * + * input | output + * ---------------------------------|--------------- + * NaN | NaN + * Inf | Inf + * normal, fits in output | converted (possibly lossy) + * normal, does not fit in output | ec is set + * subnormal | best effort + * -Inf | -Inf + */ +// clang-format on +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value)> +FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { + ec = 0; + using T = std::numeric_limits<To>; + static_assert(std::is_floating_point<From>::value, "From must be floating"); + static_assert(std::is_floating_point<To>::value, "To must be floating"); + + // catch the only happy case + if (std::isfinite(from)) { + if (from >= T::lowest() && from <= (T::max)()) { + return static_cast<To>(from); + } + // not within range. + ec = 1; + return {}; + } + + // nan and inf will be preserved + return static_cast<To>(from); +} // function + +template <typename To, typename From, + FMT_ENABLE_IF(std::is_same<From, To>::value)> +FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { + ec = 0; + static_assert(std::is_floating_point<From>::value, "From must be floating"); + return from; +} + +/** + * safe duration cast between integral durations + */ +template <typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(std::is_integral<FromRep>::value), + FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)> +To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, + int& ec) { + using From = std::chrono::duration<FromRep, FromPeriod>; + ec = 0; + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide<typename From::period, typename To::period> {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type<typename From::rep, typename To::rep, + decltype(Factor::num)>::type; + + // safe conversion to IntermediateRep + IntermediateRep count = + lossless_integral_conversion<IntermediateRep>(from.count(), ec); + if (ec) return {}; + // multiply with Factor::num without overflow or underflow + if (detail::const_check(Factor::num != 1)) { + const auto max1 = detail::max_value<IntermediateRep>() / Factor::num; + if (count > max1) { + ec = 1; + return {}; + } + const auto min1 = + (std::numeric_limits<IntermediateRep>::min)() / Factor::num; + if (count < min1) { + ec = 1; + return {}; + } + count *= Factor::num; + } + + if (detail::const_check(Factor::den != 1)) count /= Factor::den; + auto tocount = lossless_integral_conversion<typename To::rep>(count, ec); + return ec ? To() : To(tocount); +} + +/** + * safe duration_cast between floating point durations + */ +template <typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(std::is_floating_point<FromRep>::value), + FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)> +To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, + int& ec) { + using From = std::chrono::duration<FromRep, FromPeriod>; + ec = 0; + if (std::isnan(from.count())) { + // nan in, gives nan out. easy. + return To{std::numeric_limits<typename To::rep>::quiet_NaN()}; + } + // maybe we should also check if from is denormal, and decide what to do about + // it. + + // +-inf should be preserved. + if (std::isinf(from.count())) { + return To{from.count()}; + } + + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide<typename From::period, typename To::period> {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type<typename From::rep, typename To::rep, + decltype(Factor::num)>::type; + + // force conversion of From::rep -> IntermediateRep to be safe, + // even if it will never happen be narrowing in this context. + IntermediateRep count = + safe_float_conversion<IntermediateRep>(from.count(), ec); + if (ec) { + return {}; + } + + // multiply with Factor::num without overflow or underflow + if (Factor::num != 1) { + constexpr auto max1 = detail::max_value<IntermediateRep>() / + static_cast<IntermediateRep>(Factor::num); + if (count > max1) { + ec = 1; + return {}; + } + constexpr auto min1 = std::numeric_limits<IntermediateRep>::lowest() / + static_cast<IntermediateRep>(Factor::num); + if (count < min1) { + ec = 1; + return {}; + } + count *= static_cast<IntermediateRep>(Factor::num); + } + + // this can't go wrong, right? den>0 is checked earlier. + if (Factor::den != 1) { + using common_t = typename std::common_type<IntermediateRep, intmax_t>::type; + count /= static_cast<common_t>(Factor::den); + } + + // convert to the to type, safely + using ToRep = typename To::rep; + + const ToRep tocount = safe_float_conversion<ToRep>(count, ec); + if (ec) { + return {}; + } + return To{tocount}; +} +} // namespace safe_duration_cast +#endif + +// Prevents expansion of a preceding token as a function-style macro. +// Usage: f FMT_NOMACRO() +#define FMT_NOMACRO + +namespace detail { +inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); } +inline null<> localtime_s(...) { return null<>(); } +inline null<> gmtime_r(...) { return null<>(); } +inline null<> gmtime_s(...) { return null<>(); } +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in local time. Unlike ``std::localtime``, this function is + thread-safe on most platforms. + */ +inline std::tm localtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + bool run() { + using namespace fmt::detail; + return handle(localtime_r(&time_, &tm_)); + } + + bool handle(std::tm* tm) { return tm != nullptr; } + + bool handle(detail::null<>) { + using namespace fmt::detail; + return fallback(localtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + +#if !FMT_MSC_VER + bool fallback(detail::null<>) { + using namespace fmt::detail; + std::tm* tm = std::localtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + dispatcher lt(time); + // Too big time values may be unsupported. + if (!lt.run()) FMT_THROW(format_error("time_t value out of range")); + return lt.tm_; +} + +inline std::tm localtime( + std::chrono::time_point<std::chrono::system_clock> time_point) { + return localtime(std::chrono::system_clock::to_time_t(time_point)); +} + +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in Coordinated Universal Time (UTC). Unlike ``std::gmtime``, this + function is thread-safe on most platforms. + */ +inline std::tm gmtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + bool run() { + using namespace fmt::detail; + return handle(gmtime_r(&time_, &tm_)); + } + + bool handle(std::tm* tm) { return tm != nullptr; } + + bool handle(detail::null<>) { + using namespace fmt::detail; + return fallback(gmtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + +#if !FMT_MSC_VER + bool fallback(detail::null<>) { + std::tm* tm = std::gmtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + dispatcher gt(time); + // Too big time values may be unsupported. + if (!gt.run()) FMT_THROW(format_error("time_t value out of range")); + return gt.tm_; +} + +inline std::tm gmtime( + std::chrono::time_point<std::chrono::system_clock> time_point) { + return gmtime(std::chrono::system_clock::to_time_t(time_point)); +} + +FMT_BEGIN_DETAIL_NAMESPACE + +inline size_t strftime(char* str, size_t count, const char* format, + const std::tm* time) { + // Assign to a pointer to suppress GCCs -Wformat-nonliteral + // First assign the nullptr to suppress -Wsuggest-attribute=format + std::size_t (*strftime)(char*, std::size_t, const char*, const std::tm*) = + nullptr; + strftime = std::strftime; + return strftime(str, count, format, time); +} + +inline size_t strftime(wchar_t* str, size_t count, const wchar_t* format, + const std::tm* time) { + // See above + std::size_t (*wcsftime)(wchar_t*, std::size_t, const wchar_t*, + const std::tm*) = nullptr; + wcsftime = std::wcsftime; + return wcsftime(str, count, format, time); +} + +FMT_END_DETAIL_NAMESPACE + +template <typename Char, typename Duration> +struct formatter<std::chrono::time_point<std::chrono::system_clock, Duration>, + Char> : formatter<std::tm, Char> { + template <typename FormatContext> + auto format(std::chrono::time_point<std::chrono::system_clock> val, + FormatContext& ctx) -> decltype(ctx.out()) { + std::tm time = localtime(val); + return formatter<std::tm, Char>::format(time, ctx); + } +}; + +template <typename Char> struct formatter<std::tm, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto it = ctx.begin(); + if (it != ctx.end() && *it == ':') ++it; + auto end = it; + while (end != ctx.end() && *end != '}') ++end; + specs = {it, detail::to_unsigned(end - it)}; + return end; + } + + template <typename FormatContext> + auto format(const std::tm& tm, FormatContext& ctx) const + -> decltype(ctx.out()) { + basic_memory_buffer<Char> tm_format; + tm_format.append(specs.begin(), specs.end()); + // By appending an extra space we can distinguish an empty result that + // indicates insufficient buffer size from a guaranteed non-empty result + // https://github.com/fmtlib/fmt/issues/2238 + tm_format.push_back(' '); + tm_format.push_back('\0'); + basic_memory_buffer<Char> buf; + size_t start = buf.size(); + for (;;) { + size_t size = buf.capacity() - start; + size_t count = detail::strftime(&buf[start], size, &tm_format[0], &tm); + if (count != 0) { + buf.resize(start + count); + break; + } + const size_t MIN_GROWTH = 10; + buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH)); + } + // Remove the extra space. + return std::copy(buf.begin(), buf.end() - 1, ctx.out()); + } + + basic_string_view<Char> specs; +}; + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename Period> FMT_CONSTEXPR const char* get_units() { + return nullptr; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::atto>() { + return "as"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::femto>() { + return "fs"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::pico>() { + return "ps"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::nano>() { + return "ns"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::micro>() { + return "µs"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::milli>() { + return "ms"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::centi>() { + return "cs"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::deci>() { + return "ds"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::ratio<1>>() { + return "s"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::deca>() { + return "das"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::hecto>() { + return "hs"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::kilo>() { + return "ks"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::mega>() { + return "Ms"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::giga>() { + return "Gs"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::tera>() { + return "Ts"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::peta>() { + return "Ps"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::exa>() { + return "Es"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::ratio<60>>() { + return "m"; +} +template <> FMT_CONSTEXPR inline const char* get_units<std::ratio<3600>>() { + return "h"; +} + +enum class numeric_system { + standard, + // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale. + alternative +}; + +// Parses a put_time-like format string and invokes handler actions. +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, + const Char* end, + Handler&& handler) { + auto ptr = begin; + while (ptr != end) { + auto c = *ptr; + if (c == '}') break; + if (c != '%') { + ++ptr; + continue; + } + if (begin != ptr) handler.on_text(begin, ptr); + ++ptr; // consume '%' + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case '%': + handler.on_text(ptr - 1, ptr); + break; + case 'n': { + const Char newline[] = {'\n'}; + handler.on_text(newline, newline + 1); + break; + } + case 't': { + const Char tab[] = {'\t'}; + handler.on_text(tab, tab + 1); + break; + } + // Day of the week: + case 'a': + handler.on_abbr_weekday(); + break; + case 'A': + handler.on_full_weekday(); + break; + case 'w': + handler.on_dec0_weekday(numeric_system::standard); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::standard); + break; + // Month: + case 'b': + handler.on_abbr_month(); + break; + case 'B': + handler.on_full_month(); + break; + // Hour, minute, second: + case 'H': + handler.on_24_hour(numeric_system::standard); + break; + case 'I': + handler.on_12_hour(numeric_system::standard); + break; + case 'M': + handler.on_minute(numeric_system::standard); + break; + case 'S': + handler.on_second(numeric_system::standard); + break; + // Other: + case 'c': + handler.on_datetime(numeric_system::standard); + break; + case 'x': + handler.on_loc_date(numeric_system::standard); + break; + case 'X': + handler.on_loc_time(numeric_system::standard); + break; + case 'D': + handler.on_us_date(); + break; + case 'F': + handler.on_iso_date(); + break; + case 'r': + handler.on_12_hour_time(); + break; + case 'R': + handler.on_24_hour_time(); + break; + case 'T': + handler.on_iso_time(); + break; + case 'p': + handler.on_am_pm(); + break; + case 'Q': + handler.on_duration_value(); + break; + case 'q': + handler.on_duration_unit(); + break; + case 'z': + handler.on_utc_offset(); + break; + case 'Z': + handler.on_tz_name(); + break; + // Alternative representation: + case 'E': { + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'c': + handler.on_datetime(numeric_system::alternative); + break; + case 'x': + handler.on_loc_date(numeric_system::alternative); + break; + case 'X': + handler.on_loc_time(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + } + case 'O': + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'w': + handler.on_dec0_weekday(numeric_system::alternative); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::alternative); + break; + case 'H': + handler.on_24_hour(numeric_system::alternative); + break; + case 'I': + handler.on_12_hour(numeric_system::alternative); + break; + case 'M': + handler.on_minute(numeric_system::alternative); + break; + case 'S': + handler.on_second(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + default: + FMT_THROW(format_error("invalid format")); + } + begin = ptr; + } + if (begin != ptr) handler.on_text(begin, ptr); + return ptr; +} + +struct chrono_format_checker { + FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); } + + template <typename Char> + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_NORETURN void on_abbr_weekday() { report_no_date(); } + FMT_NORETURN void on_full_weekday() { report_no_date(); } + FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); } + FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); } + FMT_NORETURN void on_abbr_month() { report_no_date(); } + FMT_NORETURN void on_full_month() { report_no_date(); } + FMT_CONSTEXPR void on_24_hour(numeric_system) {} + FMT_CONSTEXPR void on_12_hour(numeric_system) {} + FMT_CONSTEXPR void on_minute(numeric_system) {} + FMT_CONSTEXPR void on_second(numeric_system) {} + FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); } + FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); } + FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); } + FMT_NORETURN void on_us_date() { report_no_date(); } + FMT_NORETURN void on_iso_date() { report_no_date(); } + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_duration_value() {} + FMT_CONSTEXPR void on_duration_unit() {} + FMT_NORETURN void on_utc_offset() { report_no_date(); } + FMT_NORETURN void on_tz_name() { report_no_date(); } +}; + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline bool isnan(T) { + return false; +} +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +inline bool isnan(T value) { + return std::isnan(value); +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline bool isfinite(T) { + return true; +} +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +inline bool isfinite(T value) { + return std::isfinite(value); +} + +// Converts value to int and checks that it's in the range [0, upper). +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline int to_nonnegative_int(T value, int upper) { + FMT_ASSERT(value >= 0 && to_unsigned(value) <= to_unsigned(upper), + "invalid value"); + (void)upper; + return static_cast<int>(value); +} +template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> +inline int to_nonnegative_int(T value, int upper) { + FMT_ASSERT( + std::isnan(value) || (value >= 0 && value <= static_cast<T>(upper)), + "invalid value"); + (void)upper; + return static_cast<int>(value); +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline T mod(T x, int y) { + return x % static_cast<T>(y); +} +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +inline T mod(T x, int y) { + return std::fmod(x, static_cast<T>(y)); +} + +// If T is an integral type, maps T to its unsigned counterpart, otherwise +// leaves it unchanged (unlike std::make_unsigned). +template <typename T, bool INTEGRAL = std::is_integral<T>::value> +struct make_unsigned_or_unchanged { + using type = T; +}; + +template <typename T> struct make_unsigned_or_unchanged<T, true> { + using type = typename std::make_unsigned<T>::type; +}; + +#if FMT_SAFE_DURATION_CAST +// throwing version of safe_duration_cast +template <typename To, typename FromRep, typename FromPeriod> +To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) { + int ec; + To to = safe_duration_cast::safe_duration_cast<To>(from, ec); + if (ec) FMT_THROW(format_error("cannot format duration")); + return to; +} +#endif + +template <typename Rep, typename Period, + FMT_ENABLE_IF(std::is_integral<Rep>::value)> +inline std::chrono::duration<Rep, std::milli> get_milliseconds( + std::chrono::duration<Rep, Period> d) { + // this may overflow and/or the result may not fit in the + // target type. +#if FMT_SAFE_DURATION_CAST + using CommonSecondsType = + typename std::common_type<decltype(d), std::chrono::seconds>::type; + const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d); + const auto d_as_whole_seconds = + fmt_safe_duration_cast<std::chrono::seconds>(d_as_common); + // this conversion should be nonproblematic + const auto diff = d_as_common - d_as_whole_seconds; + const auto ms = + fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff); + return ms; +#else + auto s = std::chrono::duration_cast<std::chrono::seconds>(d); + return std::chrono::duration_cast<std::chrono::milliseconds>(d - s); +#endif +} + +template <typename Rep, typename Period, + FMT_ENABLE_IF(std::is_floating_point<Rep>::value)> +inline std::chrono::duration<Rep, std::milli> get_milliseconds( + std::chrono::duration<Rep, Period> d) { + using common_type = typename std::common_type<Rep, std::intmax_t>::type; + auto ms = mod(d.count() * static_cast<common_type>(Period::num) / + static_cast<common_type>(Period::den) * 1000, + 1000); + return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms)); +} + +template <typename Char, typename Rep, typename OutputIt, + FMT_ENABLE_IF(std::is_integral<Rep>::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int) { + return write<Char>(out, val); +} + +template <typename Char, typename Rep, typename OutputIt, + FMT_ENABLE_IF(std::is_floating_point<Rep>::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int precision) { + auto specs = basic_format_specs<Char>(); + specs.precision = precision; + specs.type = precision > 0 ? 'f' : 'g'; + return write<Char>(out, val, specs); +} + +template <typename Char, typename OutputIt> +OutputIt copy_unit(string_view unit, OutputIt out, Char) { + return std::copy(unit.begin(), unit.end(), out); +} + +template <typename OutputIt> +OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) { + // This works when wchar_t is UTF-32 because units only contain characters + // that have the same representation in UTF-16 and UTF-32. + utf8_to_utf16 u(unit); + return std::copy(u.c_str(), u.c_str() + u.size(), out); +} + +template <typename Char, typename Period, typename OutputIt> +OutputIt format_duration_unit(OutputIt out) { + if (const char* unit = get_units<Period>()) + return copy_unit(string_view(unit), out, Char()); + *out++ = '['; + out = write<Char>(out, Period::num); + if (const_check(Period::den != 1)) { + *out++ = '/'; + out = write<Char>(out, Period::den); + } + *out++ = ']'; + *out++ = 's'; + return out; +} + +template <typename FormatContext, typename OutputIt, typename Rep, + typename Period> +struct chrono_formatter { + FormatContext& context; + OutputIt out; + int precision; + bool localized = false; + // rep is unsigned to avoid overflow. + using rep = + conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int), + unsigned, typename make_unsigned_or_unchanged<Rep>::type>; + rep val; + using seconds = std::chrono::duration<rep>; + seconds s; + using milliseconds = std::chrono::duration<rep, std::milli>; + bool negative; + + using char_type = typename FormatContext::char_type; + + explicit chrono_formatter(FormatContext& ctx, OutputIt o, + std::chrono::duration<Rep, Period> d) + : context(ctx), + out(o), + val(static_cast<rep>(d.count())), + negative(false) { + if (d.count() < 0) { + val = 0 - val; + negative = true; + } + + // this may overflow and/or the result may not fit in the + // target type. +#if FMT_SAFE_DURATION_CAST + // might need checked conversion (rep!=Rep) + auto tmpval = std::chrono::duration<rep, Period>(val); + s = fmt_safe_duration_cast<seconds>(tmpval); +#else + s = std::chrono::duration_cast<seconds>( + std::chrono::duration<rep, Period>(val)); +#endif + } + + // returns true if nan or inf, writes to out. + bool handle_nan_inf() { + if (isfinite(val)) { + return false; + } + if (isnan(val)) { + write_nan(); + return true; + } + // must be +-inf + if (val > 0) { + write_pinf(); + } else { + write_ninf(); + } + return true; + } + + Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); } + + Rep hour12() const { + Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12)); + return hour <= 0 ? 12 : hour; + } + + Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); } + Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); } + + std::tm time() const { + auto time = std::tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + time.tm_min = to_nonnegative_int(minute(), 60); + time.tm_sec = to_nonnegative_int(second(), 60); + return time; + } + + void write_sign() { + if (negative) { + *out++ = '-'; + negative = false; + } + } + + void write(Rep value, int width) { + write_sign(); + if (isnan(value)) return write_nan(); + uint32_or_64_or_128_t<int> n = + to_unsigned(to_nonnegative_int(value, max_value<int>())); + int num_digits = detail::count_digits(n); + if (width > num_digits) out = std::fill_n(out, width - num_digits, '0'); + out = format_decimal<char_type>(out, n, num_digits).end; + } + + void write_nan() { std::copy_n("nan", 3, out); } + void write_pinf() { std::copy_n("inf", 3, out); } + void write_ninf() { std::copy_n("-inf", 4, out); } + + void format_localized(const tm& time, char format, char modifier = 0) { + if (isnan(val)) return write_nan(); + auto locale = localized ? context.locale().template get<std::locale>() + : std::locale::classic(); + auto& facet = std::use_facet<std::time_put<char_type>>(locale); + std::basic_ostringstream<char_type> os; + os.imbue(locale); + facet.put(os, os, ' ', &time, format, modifier); + auto str = os.str(); + std::copy(str.begin(), str.end(), out); + } + + void on_text(const char_type* begin, const char_type* end) { + std::copy(begin, end, out); + } + + // These are not implemented because durations don't have date information. + void on_abbr_weekday() {} + void on_full_weekday() {} + void on_dec0_weekday(numeric_system) {} + void on_dec1_weekday(numeric_system) {} + void on_abbr_month() {} + void on_full_month() {} + void on_datetime(numeric_system) {} + void on_loc_date(numeric_system) {} + void on_loc_time(numeric_system) {} + void on_us_date() {} + void on_iso_date() {} + void on_utc_offset() {} + void on_tz_name() {} + + void on_24_hour(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour(), 2); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + format_localized(time, 'H', 'O'); + } + + void on_12_hour(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour12(), 2); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour12(), 12); + format_localized(time, 'I', 'O'); + } + + void on_minute(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(minute(), 2); + auto time = tm(); + time.tm_min = to_nonnegative_int(minute(), 60); + format_localized(time, 'M', 'O'); + } + + void on_second(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) { + write(second(), 2); +#if FMT_SAFE_DURATION_CAST + // convert rep->Rep + using duration_rep = std::chrono::duration<rep, Period>; + using duration_Rep = std::chrono::duration<Rep, Period>; + auto tmpval = fmt_safe_duration_cast<duration_Rep>(duration_rep{val}); +#else + auto tmpval = std::chrono::duration<Rep, Period>(val); +#endif + auto ms = get_milliseconds(tmpval); + if (ms != std::chrono::milliseconds(0)) { + *out++ = '.'; + write(ms.count(), 3); + } + return; + } + auto time = tm(); + time.tm_sec = to_nonnegative_int(second(), 60); + format_localized(time, 'S', 'O'); + } + + void on_12_hour_time() { + if (handle_nan_inf()) return; + format_localized(time(), 'r'); + } + + void on_24_hour_time() { + if (handle_nan_inf()) { + *out++ = ':'; + handle_nan_inf(); + return; + } + + write(hour(), 2); + *out++ = ':'; + write(minute(), 2); + } + + void on_iso_time() { + on_24_hour_time(); + *out++ = ':'; + if (handle_nan_inf()) return; + write(second(), 2); + } + + void on_am_pm() { + if (handle_nan_inf()) return; + format_localized(time(), 'p'); + } + + void on_duration_value() { + if (handle_nan_inf()) return; + write_sign(); + out = format_duration_value<char_type>(out, val, precision); + } + + void on_duration_unit() { + out = format_duration_unit<char_type, Period>(out); + } +}; + +FMT_END_DETAIL_NAMESPACE + +template <typename Rep, typename Period, typename Char> +struct formatter<std::chrono::duration<Rep, Period>, Char> { + private: + basic_format_specs<Char> specs; + int precision = -1; + using arg_ref_type = detail::arg_ref<Char>; + arg_ref_type width_ref; + arg_ref_type precision_ref; + bool localized = false; + basic_string_view<Char> format_str; + using duration = std::chrono::duration<Rep, Period>; + + struct spec_handler { + formatter& f; + basic_format_parse_context<Char>& context; + basic_string_view<Char> format_str; + + template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) { + context.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) { + context.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(detail::auto_id) { + return arg_ref_type(context.next_arg_id()); + } + + void on_error(const char* msg) { FMT_THROW(format_error(msg)); } + FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) { + f.specs.fill = fill; + } + FMT_CONSTEXPR void on_align(align_t align) { f.specs.align = align; } + FMT_CONSTEXPR void on_width(int width) { f.specs.width = width; } + FMT_CONSTEXPR void on_precision(int _precision) { + f.precision = _precision; + } + FMT_CONSTEXPR void end_precision() {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + f.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + f.precision_ref = make_arg_ref(arg_id); + } + }; + + using iterator = typename basic_format_parse_context<Char>::iterator; + struct parse_range { + iterator begin; + iterator end; + }; + + FMT_CONSTEXPR parse_range do_parse(basic_format_parse_context<Char>& ctx) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin == end || *begin == '}') return {begin, begin}; + spec_handler handler{*this, ctx, format_str}; + begin = detail::parse_align(begin, end, handler); + if (begin == end) return {begin, begin}; + begin = detail::parse_width(begin, end, handler); + if (begin == end) return {begin, begin}; + if (*begin == '.') { + if (std::is_floating_point<Rep>::value) + begin = detail::parse_precision(begin, end, handler); + else + handler.on_error("precision not allowed for this argument type"); + } + if (begin != end && *begin == 'L') { + ++begin; + localized = true; + } + end = parse_chrono_format(begin, end, detail::chrono_format_checker()); + return {begin, end}; + } + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx) + -> decltype(ctx.begin()) { + auto range = do_parse(ctx); + format_str = basic_string_view<Char>( + &*range.begin, detail::to_unsigned(range.end - range.begin)); + return range.end; + } + + template <typename FormatContext> + auto format(const duration& d, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs_copy = specs; + auto precision_copy = precision; + auto begin = format_str.begin(), end = format_str.end(); + // As a possible future optimization, we could avoid extra copying if width + // is not specified. + basic_memory_buffer<Char> buf; + auto out = std::back_inserter(buf); + detail::handle_dynamic_spec<detail::width_checker>(specs_copy.width, + width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>(precision_copy, + precision_ref, ctx); + if (begin == end || *begin == '}') { + out = detail::format_duration_value<Char>(out, d.count(), precision_copy); + detail::format_duration_unit<Char, Period>(out); + } else { + detail::chrono_formatter<FormatContext, decltype(out), Rep, Period> f( + ctx, out, d); + f.precision = precision_copy; + f.localized = localized; + parse_chrono_format(begin, end, f); + } + return detail::write( + ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs_copy); + } +}; + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_CHRONO_H_ diff --git a/deps/fmt/fmt/color.h b/deps/fmt/include/fmt/color.h index d9d315599f..8cddbfe192 100644 --- a/deps/fmt/fmt/color.h +++ b/deps/fmt/include/fmt/color.h @@ -10,7 +10,15 @@ #include "format.h" +// __declspec(deprecated) is broken in some MSVC versions. +#if FMT_MSC_VER +# define FMT_DEPRECATED_NONMSVC +#else +# define FMT_DEPRECATED_NONMSVC FMT_DEPRECATED +#endif + FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN enum class color : uint32_t { alice_blue = 0xF0F8FF, // rgb(240,248,255) @@ -198,7 +206,7 @@ struct rgb { uint8_t b; }; -namespace internal { +FMT_BEGIN_DETAIL_NAMESPACE // color is a struct of either a rgb color or a terminal color. struct color_type { @@ -221,9 +229,10 @@ struct color_type { uint32_t rgb_color; } value; }; -} // namespace internal -// Experimental text formatting support. +FMT_END_DETAIL_NAMESPACE + +/** A text style consisting of foreground and background colors and emphasis. */ class text_style { public: FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT @@ -260,33 +269,14 @@ class text_style { return lhs |= rhs; } - FMT_CONSTEXPR text_style& operator&=(const text_style& rhs) { - if (!set_foreground_color) { - set_foreground_color = rhs.set_foreground_color; - foreground_color = rhs.foreground_color; - } else if (rhs.set_foreground_color) { - if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) - FMT_THROW(format_error("can't AND a terminal color")); - foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color; - } - - if (!set_background_color) { - set_background_color = rhs.set_background_color; - background_color = rhs.background_color; - } else if (rhs.set_background_color) { - if (!background_color.is_rgb || !rhs.background_color.is_rgb) - FMT_THROW(format_error("can't AND a terminal color")); - background_color.value.rgb_color &= rhs.background_color.value.rgb_color; - } - - ems = static_cast<emphasis>(static_cast<uint8_t>(ems) & - static_cast<uint8_t>(rhs.ems)); - return *this; + FMT_DEPRECATED_NONMSVC FMT_CONSTEXPR text_style& operator&=( + const text_style& rhs) { + return and_assign(rhs); } - friend FMT_CONSTEXPR text_style operator&(text_style lhs, - const text_style& rhs) { - return lhs &= rhs; + FMT_DEPRECATED_NONMSVC friend FMT_CONSTEXPR text_style + operator&(text_style lhs, const text_style& rhs) { + return lhs.and_assign(rhs); } FMT_CONSTEXPR bool has_foreground() const FMT_NOEXCEPT { @@ -298,22 +288,22 @@ class text_style { FMT_CONSTEXPR bool has_emphasis() const FMT_NOEXCEPT { return static_cast<uint8_t>(ems) != 0; } - FMT_CONSTEXPR internal::color_type get_foreground() const FMT_NOEXCEPT { - assert(has_foreground() && "no foreground specified for this style"); + FMT_CONSTEXPR detail::color_type get_foreground() const FMT_NOEXCEPT { + FMT_ASSERT(has_foreground(), "no foreground specified for this style"); return foreground_color; } - FMT_CONSTEXPR internal::color_type get_background() const FMT_NOEXCEPT { - assert(has_background() && "no background specified for this style"); + FMT_CONSTEXPR detail::color_type get_background() const FMT_NOEXCEPT { + FMT_ASSERT(has_background(), "no background specified for this style"); return background_color; } FMT_CONSTEXPR emphasis get_emphasis() const FMT_NOEXCEPT { - assert(has_emphasis() && "no emphasis specified for this style"); + FMT_ASSERT(has_emphasis(), "no emphasis specified for this style"); return ems; } private: FMT_CONSTEXPR text_style(bool is_foreground, - internal::color_type text_color) FMT_NOEXCEPT + detail::color_type text_color) FMT_NOEXCEPT : set_foreground_color(), set_background_color(), ems() { @@ -326,45 +316,74 @@ class text_style { } } - friend FMT_CONSTEXPR_DECL text_style fg(internal::color_type foreground) + // DEPRECATED! + FMT_CONSTEXPR text_style& and_assign(const text_style& rhs) { + if (!set_foreground_color) { + set_foreground_color = rhs.set_foreground_color; + foreground_color = rhs.foreground_color; + } else if (rhs.set_foreground_color) { + if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) + FMT_THROW(format_error("can't AND a terminal color")); + foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color; + } + + if (!set_background_color) { + set_background_color = rhs.set_background_color; + background_color = rhs.background_color; + } else if (rhs.set_background_color) { + if (!background_color.is_rgb || !rhs.background_color.is_rgb) + FMT_THROW(format_error("can't AND a terminal color")); + background_color.value.rgb_color &= rhs.background_color.value.rgb_color; + } + + ems = static_cast<emphasis>(static_cast<uint8_t>(ems) & + static_cast<uint8_t>(rhs.ems)); + return *this; + } + + friend FMT_CONSTEXPR_DECL text_style fg(detail::color_type foreground) FMT_NOEXCEPT; - friend FMT_CONSTEXPR_DECL text_style bg(internal::color_type background) + + friend FMT_CONSTEXPR_DECL text_style bg(detail::color_type background) FMT_NOEXCEPT; - internal::color_type foreground_color; - internal::color_type background_color; + detail::color_type foreground_color; + detail::color_type background_color; bool set_foreground_color; bool set_background_color; emphasis ems; }; -FMT_CONSTEXPR text_style fg(internal::color_type foreground) FMT_NOEXCEPT { - return text_style(/*is_foreground=*/true, foreground); +/** Creates a text style from the foreground (text) color. */ +FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) FMT_NOEXCEPT { + return text_style(true, foreground); } -FMT_CONSTEXPR text_style bg(internal::color_type background) FMT_NOEXCEPT { - return text_style(/*is_foreground=*/false, background); +/** Creates a text style from the background color. */ +FMT_CONSTEXPR inline text_style bg(detail::color_type background) FMT_NOEXCEPT { + return text_style(false, background); } -FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT { +FMT_CONSTEXPR inline text_style operator|(emphasis lhs, + emphasis rhs) FMT_NOEXCEPT { return text_style(lhs) | rhs; } -namespace internal { +FMT_BEGIN_DETAIL_NAMESPACE template <typename Char> struct ansi_color_escape { - FMT_CONSTEXPR ansi_color_escape(internal::color_type text_color, + FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color, const char* esc) FMT_NOEXCEPT { // If we have a terminal color, we need to output another escape code // sequence. if (!text_color.is_rgb) { - bool is_background = esc == internal::data::background_color; + bool is_background = esc == string_view("\x1b[48;2;"); uint32_t value = text_color.value.term_color; // Background ASCII codes are the same as the foreground ones but with // 10 more. if (is_background) value += 10u; - std::size_t index = 0; + size_t index = 0; buffer[index++] = static_cast<Char>('\x1b'); buffer[index++] = static_cast<Char>('['); @@ -398,7 +417,7 @@ template <typename Char> struct ansi_color_escape { if (em_bits & static_cast<uint8_t>(emphasis::strikethrough)) em_codes[3] = 9; - std::size_t index = 0; + size_t index = 0; for (int i = 0; i < 4; ++i) { if (!em_codes[i]) continue; buffer[index++] = static_cast<Char>('\x1b'); @@ -411,8 +430,8 @@ template <typename Char> struct ansi_color_escape { FMT_CONSTEXPR operator const Char*() const FMT_NOEXCEPT { return buffer; } FMT_CONSTEXPR const Char* begin() const FMT_NOEXCEPT { return buffer; } - FMT_CONSTEXPR const Char* end() const FMT_NOEXCEPT { - return buffer + std::strlen(buffer); + FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const FMT_NOEXCEPT { + return buffer + std::char_traits<Char>::length(buffer); } private: @@ -429,14 +448,14 @@ template <typename Char> struct ansi_color_escape { template <typename Char> FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color( - internal::color_type foreground) FMT_NOEXCEPT { - return ansi_color_escape<Char>(foreground, internal::data::foreground_color); + detail::color_type foreground) FMT_NOEXCEPT { + return ansi_color_escape<Char>(foreground, "\x1b[38;2;"); } template <typename Char> FMT_CONSTEXPR ansi_color_escape<Char> make_background_color( - internal::color_type background) FMT_NOEXCEPT { - return ansi_color_escape<Char>(background, internal::data::background_color); + detail::color_type background) FMT_NOEXCEPT { + return ansi_color_escape<Char>(background, "\x1b[48;2;"); } template <typename Char> @@ -455,110 +474,97 @@ inline void fputs<wchar_t>(const wchar_t* chars, FILE* stream) FMT_NOEXCEPT { } template <typename Char> inline void reset_color(FILE* stream) FMT_NOEXCEPT { - fputs(internal::data::reset_color, stream); + fputs("\x1b[0m", stream); } template <> inline void reset_color<wchar_t>(FILE* stream) FMT_NOEXCEPT { - fputs(internal::data::wreset_color, stream); + fputs(L"\x1b[0m", stream); } template <typename Char> -inline void reset_color(basic_memory_buffer<Char>& buffer) FMT_NOEXCEPT { - const char* begin = data::reset_color; - const char* end = begin + sizeof(data::reset_color) - 1; - buffer.append(begin, end); +inline void reset_color(buffer<Char>& buffer) FMT_NOEXCEPT { + auto reset_color = string_view("\x1b[0m"); + buffer.append(reset_color.begin(), reset_color.end()); } template <typename Char> -std::basic_string<Char> vformat(const text_style& ts, - basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char> > args) { - basic_memory_buffer<Char> buffer; +void vformat_to(buffer<Char>& buf, const text_style& ts, + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { bool has_style = false; if (ts.has_emphasis()) { has_style = true; - ansi_color_escape<Char> escape = make_emphasis<Char>(ts.get_emphasis()); - buffer.append(escape.begin(), escape.end()); + auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis()); + buf.append(emphasis.begin(), emphasis.end()); } if (ts.has_foreground()) { has_style = true; - ansi_color_escape<Char> escape = - make_foreground_color<Char>(ts.get_foreground()); - buffer.append(escape.begin(), escape.end()); + auto foreground = detail::make_foreground_color<Char>(ts.get_foreground()); + buf.append(foreground.begin(), foreground.end()); } if (ts.has_background()) { has_style = true; - ansi_color_escape<Char> escape = - make_background_color<Char>(ts.get_background()); - buffer.append(escape.begin(), escape.end()); + auto background = detail::make_background_color<Char>(ts.get_background()); + buf.append(background.begin(), background.end()); } - internal::vformat_to(buffer, format_str, args); - if (has_style) { - reset_color<Char>(buffer); - } - return fmt::to_string(buffer); + detail::vformat_to(buf, format_str, args); + if (has_style) detail::reset_color<Char>(buf); } -} // namespace internal -template <typename S, typename Char = char_t<S> > +FMT_END_DETAIL_NAMESPACE + +template <typename S, typename Char = char_t<S>> void vprint(std::FILE* f, const text_style& ts, const S& format, - basic_format_args<buffer_context<Char> > args) { - bool has_style = false; - if (ts.has_emphasis()) { - has_style = true; - internal::fputs<Char>(internal::make_emphasis<Char>(ts.get_emphasis()), f); - } - if (ts.has_foreground()) { - has_style = true; - internal::fputs<Char>( - internal::make_foreground_color<Char>(ts.get_foreground()), f); - } - if (ts.has_background()) { - has_style = true; - internal::fputs<Char>( - internal::make_background_color<Char>(ts.get_background()), f); - } - vprint(f, format, args); - if (has_style) { - internal::reset_color<Char>(f); - } + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buf; + detail::vformat_to(buf, ts, to_string_view(format), args); + buf.push_back(Char(0)); + detail::fputs(buf.data(), f); } /** + \rst Formats a string and prints it to the specified file stream using ANSI escape sequences to specify text formatting. - Example: + + **Example**:: + fmt::print(fmt::emphasis::bold | fg(fmt::color::red), "Elapsed time: {0:.2f} seconds", 1.23); + \endrst */ template <typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value)> + FMT_ENABLE_IF(detail::is_string<S>::value)> void print(std::FILE* f, const text_style& ts, const S& format_str, const Args&... args) { - internal::check_format_string<Args...>(format_str); - using context = buffer_context<char_t<S> >; - format_arg_store<context, Args...> as{args...}; - vprint(f, ts, format_str, basic_format_args<context>(as)); + vprint(f, ts, format_str, + fmt::make_args_checked<Args...>(format_str, args...)); } /** + \rst Formats a string and prints it to stdout using ANSI escape sequences to specify text formatting. - Example: + + **Example**:: + fmt::print(fmt::emphasis::bold | fg(fmt::color::red), "Elapsed time: {0:.2f} seconds", 1.23); + \endrst */ template <typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value)> + FMT_ENABLE_IF(detail::is_string<S>::value)> void print(const text_style& ts, const S& format_str, const Args&... args) { return print(stdout, ts, format_str, args...); } -template <typename S, typename Char = char_t<S> > +template <typename S, typename Char = char_t<S>> inline std::basic_string<Char> vformat( const text_style& ts, const S& format_str, - basic_format_args<buffer_context<Char> > args) { - return internal::vformat(ts, to_string_view(format_str), args); + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buf; + detail::vformat_to(buf, ts, to_string_view(format_str), args); + return fmt::to_string(buf); } /** @@ -573,13 +579,49 @@ inline std::basic_string<Char> vformat( "The answer is {}", 42); \endrst */ -template <typename S, typename... Args, typename Char = char_t<S> > +template <typename S, typename... Args, typename Char = char_t<S>> inline std::basic_string<Char> format(const text_style& ts, const S& format_str, const Args&... args) { - return internal::vformat(ts, to_string_view(format_str), - {internal::make_args_checked(format_str, args...)}); + return vformat(ts, to_string_view(format_str), + fmt::make_args_checked<Args...>(format_str, args...)); +} + +/** + Formats a string with the given text_style and writes the output to ``out``. + */ +template <typename OutputIt, typename Char, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)> +OutputIt vformat_to( + OutputIt out, const text_style& ts, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out)); + detail::vformat_to(buf, ts, format_str, args); + return detail::get_iterator(buf); +} + +/** + \rst + Formats arguments with the given text_style, writes the result to the output + iterator ``out`` and returns the iterator past the end of the output range. + + **Example**:: + + std::vector<char> out; + fmt::format_to(std::back_inserter(out), + fmt::emphasis::bold | fg(fmt::color::red), "{}", 42); + \endrst +*/ +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value&& + detail::is_string<S>::value> +inline auto format_to(OutputIt out, const text_style& ts, const S& format_str, + Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + return vformat_to(out, ts, to_string_view(format_str), + fmt::make_args_checked<Args...>(format_str, args...)); } +FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_COLOR_H_ diff --git a/deps/fmt/include/fmt/compile.h b/deps/fmt/include/fmt/compile.h new file mode 100644 index 0000000000..128004bc5a --- /dev/null +++ b/deps/fmt/include/fmt/compile.h @@ -0,0 +1,626 @@ +// Formatting library for C++ - experimental format string compilation +// +// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_COMPILE_H_ +#define FMT_COMPILE_H_ + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +// An output iterator that counts the number of objects written to it and +// discards them. +class counting_iterator { + private: + size_t count_; + + public: + using iterator_category = std::output_iterator_tag; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + using _Unchecked_type = counting_iterator; // Mark iterator as checked. + + struct value_type { + template <typename T> void operator=(const T&) {} + }; + + counting_iterator() : count_(0) {} + + size_t count() const { return count_; } + + counting_iterator& operator++() { + ++count_; + return *this; + } + counting_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + friend counting_iterator operator+(counting_iterator it, difference_type n) { + it.count_ += static_cast<size_t>(n); + return it; + } + + value_type operator*() const { return {}; } +}; + +template <typename Char, typename InputIt> +inline counting_iterator copy_str(InputIt begin, InputIt end, + counting_iterator it) { + return it + (end - begin); +} + +template <typename OutputIt> class truncating_iterator_base { + protected: + OutputIt out_; + size_t limit_; + size_t count_ = 0; + + truncating_iterator_base() : out_(), limit_(0) {} + + truncating_iterator_base(OutputIt out, size_t limit) + : out_(out), limit_(limit) {} + + public: + using iterator_category = std::output_iterator_tag; + using value_type = typename std::iterator_traits<OutputIt>::value_type; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + using _Unchecked_type = + truncating_iterator_base; // Mark iterator as checked. + + OutputIt base() const { return out_; } + size_t count() const { return count_; } +}; + +// An output iterator that truncates the output and counts the number of objects +// written to it. +template <typename OutputIt, + typename Enable = typename std::is_void< + typename std::iterator_traits<OutputIt>::value_type>::type> +class truncating_iterator; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::false_type> + : public truncating_iterator_base<OutputIt> { + mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_; + + public: + using value_type = typename truncating_iterator_base<OutputIt>::value_type; + + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + truncating_iterator& operator++() { + if (this->count_++ < this->limit_) ++this->out_; + return *this; + } + + truncating_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + value_type& operator*() const { + return this->count_ < this->limit_ ? *this->out_ : blackhole_; + } +}; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::true_type> + : public truncating_iterator_base<OutputIt> { + public: + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + template <typename T> truncating_iterator& operator=(T val) { + if (this->count_++ < this->limit_) *this->out_++ = val; + return *this; + } + + truncating_iterator& operator++() { return *this; } + truncating_iterator& operator++(int) { return *this; } + truncating_iterator& operator*() { return *this; } +}; + +// A compile-time string which is compiled into fast formatting code. +class compiled_string {}; + +template <typename S> +struct is_compiled_string : std::is_base_of<compiled_string, S> {}; + +/** + \rst + Converts a string literal *s* into a format string that will be parsed at + compile time and converted into efficient formatting code. Requires C++17 + ``constexpr if`` compiler support. + + **Example**:: + + // Converts 42 into std::string using the most efficient method and no + // runtime format string processing. + std::string s = fmt::format(FMT_COMPILE("{}"), 42); + \endrst + */ +#ifdef __cpp_if_constexpr +# define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::detail::compiled_string) +#else +# define FMT_COMPILE(s) FMT_STRING(s) +#endif + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template <typename Char, size_t N, fixed_string<Char, N> Str> +struct udl_compiled_string : compiled_string { + using char_type = Char; + constexpr operator basic_string_view<char_type>() const { + return {Str.data, N - 1}; + } +}; +#endif + +template <typename T, typename... Tail> +const T& first(const T& value, const Tail&...) { + return value; +} + +#ifdef __cpp_if_constexpr +template <typename... Args> struct type_list {}; + +// Returns a reference to the argument at index N from [first, rest...]. +template <int N, typename T, typename... Args> +constexpr const auto& get([[maybe_unused]] const T& first, + [[maybe_unused]] const Args&... rest) { + static_assert(N < 1 + sizeof...(Args), "index is out of bounds"); + if constexpr (N == 0) + return first; + else + return get<N - 1>(rest...); +} + +template <typename Char, typename... Args> +constexpr int get_arg_index_by_name(basic_string_view<Char> name, + type_list<Args...>) { + return get_arg_index_by_name<Args...>(name); +} + +template <int N, typename> struct get_type_impl; + +template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> { + using type = remove_cvref_t<decltype(get<N>(std::declval<Args>()...))>; +}; + +template <int N, typename T> +using get_type = typename get_type_impl<N, T>::type; + +template <typename T> struct is_compiled_format : std::false_type {}; + +template <typename Char> struct text { + basic_string_view<Char> data; + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&...) const { + return write<Char>(out, data); + } +}; + +template <typename Char> +struct is_compiled_format<text<Char>> : std::true_type {}; + +template <typename Char> +constexpr text<Char> make_text(basic_string_view<Char> s, size_t pos, + size_t size) { + return {{&s[pos], size}}; +} + +template <typename Char> struct code_unit { + Char value; + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&...) const { + return write<Char>(out, value); + } +}; + +// This ensures that the argument type is convertible to `const T&`. +template <typename T, int N, typename... Args> +constexpr const T& get_arg_checked(const Args&... args) { + const auto& arg = get<N>(args...); + if constexpr (detail::is_named_arg<remove_cvref_t<decltype(arg)>>()) { + return arg.value; + } else { + return arg; + } +} + +template <typename Char> +struct is_compiled_format<code_unit<Char>> : std::true_type {}; + +// A replacement field that refers to argument N. +template <typename Char, typename T, int N> struct field { + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + return write<Char>(out, get_arg_checked<T, N>(args...)); + } +}; + +template <typename Char, typename T, int N> +struct is_compiled_format<field<Char, T, N>> : std::true_type {}; + +// A replacement field that refers to argument with name. +template <typename Char> struct runtime_named_field { + using char_type = Char; + basic_string_view<Char> name; + + template <typename OutputIt, typename T> + constexpr static bool try_format_argument( + OutputIt& out, + // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9 + [[maybe_unused]] basic_string_view<Char> arg_name, const T& arg) { + if constexpr (is_named_arg<typename std::remove_cv<T>::type>::value) { + if (arg_name == arg.name) { + out = write<Char>(out, arg.value); + return true; + } + } + return false; + } + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + bool found = (try_format_argument(out, name, args) || ...); + if (!found) { + throw format_error("argument with specified name is not found"); + } + return out; + } +}; + +template <typename Char> +struct is_compiled_format<runtime_named_field<Char>> : std::true_type {}; + +// A replacement field that refers to argument N and has format specifiers. +template <typename Char, typename T, int N> struct spec_field { + using char_type = Char; + formatter<T, Char> fmt; + + template <typename OutputIt, typename... Args> + constexpr FMT_INLINE OutputIt format(OutputIt out, + const Args&... args) const { + const auto& vargs = + fmt::make_format_args<basic_format_context<OutputIt, Char>>(args...); + basic_format_context<OutputIt, Char> ctx(out, vargs); + return fmt.format(get_arg_checked<T, N>(args...), ctx); + } +}; + +template <typename Char, typename T, int N> +struct is_compiled_format<spec_field<Char, T, N>> : std::true_type {}; + +template <typename L, typename R> struct concat { + L lhs; + R rhs; + using char_type = typename L::char_type; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + out = lhs.format(out, args...); + return rhs.format(out, args...); + } +}; + +template <typename L, typename R> +struct is_compiled_format<concat<L, R>> : std::true_type {}; + +template <typename L, typename R> +constexpr concat<L, R> make_concat(L lhs, R rhs) { + return {lhs, rhs}; +} + +struct unknown_format {}; + +template <typename Char> +constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) { + for (size_t size = str.size(); pos != size; ++pos) { + if (str[pos] == '{' || str[pos] == '}') break; + } + return pos; +} + +template <typename Args, size_t POS, int ID, typename S> +constexpr auto compile_format_string(S format_str); + +template <typename Args, size_t POS, int ID, typename T, typename S> +constexpr auto parse_tail(T head, S format_str) { + if constexpr (POS != + basic_string_view<typename S::char_type>(format_str).size()) { + constexpr auto tail = compile_format_string<Args, POS, ID>(format_str); + if constexpr (std::is_same<remove_cvref_t<decltype(tail)>, + unknown_format>()) + return tail; + else + return make_concat(head, tail); + } else { + return head; + } +} + +template <typename T, typename Char> struct parse_specs_result { + formatter<T, Char> fmt; + size_t end; + int next_arg_id; +}; + +constexpr int manual_indexing_id = -1; + +template <typename T, typename Char> +constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str, + size_t pos, int next_arg_id) { + str.remove_prefix(pos); + auto ctx = basic_format_parse_context<Char>(str, {}, next_arg_id); + auto f = formatter<T, Char>(); + auto end = f.parse(ctx); + return {f, pos + fmt::detail::to_unsigned(end - str.data()) + 1, + next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()}; +} + +template <typename Char> struct arg_id_handler { + constexpr void on_error(const char* message) { throw format_error(message); } + + constexpr int on_arg_id() { + FMT_ASSERT(false, "handler cannot be used with automatic indexing"); + return 0; + } + + constexpr int on_arg_id(int id) { + arg_id = arg_ref<Char>(id); + return 0; + } + + constexpr int on_arg_id(basic_string_view<Char> id) { + arg_id = arg_ref<Char>(id); + return 0; + } + + arg_ref<Char> arg_id; +}; + +template <typename Char> struct parse_arg_id_result { + arg_ref<Char> arg_id; + const Char* arg_id_end; +}; + +template <int ID, typename Char> +constexpr auto parse_arg_id(const Char* begin, const Char* end) { + auto handler = arg_id_handler<Char>{arg_ref<Char>{}}; + auto adapter = id_adapter<arg_id_handler<Char>, Char>{handler, 0}; + auto arg_id_end = parse_arg_id(begin, end, adapter); + return parse_arg_id_result<Char>{handler.arg_id, arg_id_end}; +} + +template <typename T, typename Enable = void> struct field_type { + using type = remove_cvref_t<T>; +}; + +template <typename T> +struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> { + using type = remove_cvref_t<decltype(T::value)>; +}; + +template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID, + typename S> +constexpr auto parse_replacement_field_then_tail(S format_str) { + using char_type = typename S::char_type; + constexpr basic_string_view<char_type> str = format_str; + constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type(); + if constexpr (c == '}') { + return parse_tail<Args, END_POS + 1, NEXT_ID>( + field<char_type, typename field_type<T>::type, ARG_INDEX>(), + format_str); + } else if constexpr (c == ':') { + constexpr auto result = parse_specs<typename field_type<T>::type>( + str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID); + return parse_tail<Args, result.end, result.next_arg_id>( + spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{ + result.fmt}, + format_str); + } +} + +// Compiles a non-empty format string and returns the compiled representation +// or unknown_format() on unrecognized input. +template <typename Args, size_t POS, int ID, typename S> +constexpr auto compile_format_string(S format_str) { + using char_type = typename S::char_type; + constexpr basic_string_view<char_type> str = format_str; + if constexpr (str[POS] == '{') { + if constexpr (POS + 1 == str.size()) + throw format_error("unmatched '{' in format string"); + if constexpr (str[POS + 1] == '{') { + return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str); + } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') { + static_assert(ID != manual_indexing_id, + "cannot switch from manual to automatic argument indexing"); + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail<get_type<ID, Args>, Args, + POS + 1, ID, next_id>( + format_str); + } else { + constexpr auto arg_id_result = + parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size()); + constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data(); + constexpr char_type c = + arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type(); + static_assert(c == '}' || c == ':', "missing '}' in format string"); + if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) { + static_assert( + ID == manual_indexing_id || ID == 0, + "cannot switch from automatic to manual argument indexing"); + constexpr auto arg_index = arg_id_result.arg_id.val.index; + return parse_replacement_field_then_tail<get_type<arg_index, Args>, + Args, arg_id_end_pos, + arg_index, manual_indexing_id>( + format_str); + } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) { + constexpr auto arg_index = + get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{}); + if constexpr (arg_index != invalid_arg_index) { + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail< + decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos, + arg_index, next_id>(format_str); + } else { + if constexpr (c == '}') { + return parse_tail<Args, arg_id_end_pos + 1, ID>( + runtime_named_field<char_type>{arg_id_result.arg_id.val.name}, + format_str); + } else if constexpr (c == ':') { + return unknown_format(); // no type info for specs parsing + } + } + } + } + } else if constexpr (str[POS] == '}') { + if constexpr (POS + 1 == str.size()) + throw format_error("unmatched '}' in format string"); + return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str); + } else { + constexpr auto end = parse_text(str, POS + 1); + if constexpr (end - POS > 1) { + return parse_tail<Args, end, ID>(make_text(str, POS, end - POS), + format_str); + } else { + return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]}, + format_str); + } + } +} + +template <typename... Args, typename S, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +constexpr auto compile(S format_str) { + constexpr basic_string_view<typename S::char_type> str = format_str; + if constexpr (str.size() == 0) { + return detail::make_text(str, 0, 0); + } else { + constexpr auto result = + detail::compile_format_string<detail::type_list<Args...>, 0, 0>( + format_str); + return result; + } +} +#endif // __cpp_if_constexpr +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +#ifdef __cpp_if_constexpr + +template <typename CompiledFormat, typename... Args, + typename Char = typename CompiledFormat::char_type, + FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)> +FMT_INLINE std::basic_string<Char> format(const CompiledFormat& cf, + const Args&... args) { + auto s = std::basic_string<Char>(); + cf.format(std::back_inserter(s), args...); + return s; +} + +template <typename OutputIt, typename CompiledFormat, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)> +constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf, + const Args&... args) { + return cf.format(out, args...); +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +FMT_INLINE std::basic_string<typename S::char_type> format(const S&, + Args&&... args) { + if constexpr (std::is_same<typename S::char_type, char>::value) { + constexpr basic_string_view<typename S::char_type> str = S(); + if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') { + const auto& first = detail::first(args...); + if constexpr (detail::is_named_arg< + remove_cvref_t<decltype(first)>>::value) { + return fmt::to_string(first.value); + } else { + return fmt::to_string(first); + } + } + } + constexpr auto compiled = detail::compile<Args...>(S()); + if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>, + detail::unknown_format>()) { + return format(static_cast<basic_string_view<typename S::char_type>>(S()), + std::forward<Args>(args)...); + } else { + return format(compiled, std::forward<Args>(args)...); + } +} + +template <typename OutputIt, typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) { + constexpr auto compiled = detail::compile<Args...>(S()); + if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>, + detail::unknown_format>()) { + return format_to(out, + static_cast<basic_string_view<typename S::char_type>>(S()), + std::forward<Args>(args)...); + } else { + return format_to(out, compiled, std::forward<Args>(args)...); + } +} +#endif + +template <typename OutputIt, typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n, + const S& format_str, Args&&... args) { + auto it = format_to(detail::truncating_iterator<OutputIt>(out, n), format_str, + std::forward<Args>(args)...); + return {it.base(), it.count()}; +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +size_t formatted_size(const S& format_str, const Args&... args) { + return format_to(detail::counting_iterator(), format_str, args...).count(); +} + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +inline namespace literals { +template <detail::fixed_string Str> +constexpr detail::udl_compiled_string< + remove_cvref_t<decltype(Str.data[0])>, + sizeof(Str.data) / sizeof(decltype(Str.data[0])), Str> +operator""_cf() { + return {}; +} +} // namespace literals +#endif + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_COMPILE_H_ diff --git a/deps/fmt/include/fmt/core.h b/deps/fmt/include/fmt/core.h new file mode 100644 index 0000000000..293d824250 --- /dev/null +++ b/deps/fmt/include/fmt/core.h @@ -0,0 +1,2744 @@ +// Formatting library for C++ - the core API +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CORE_H_ +#define FMT_CORE_H_ + +#include <climits> // INT_MAX +#include <cstdio> // std::FILE +#include <cstring> +#include <iterator> +#include <string> +#include <type_traits> + +// The fmt library version in the form major * 10000 + minor * 100 + patch. +#define FMT_VERSION 70104 + +#ifdef __clang__ +# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) +#else +# define FMT_CLANG_VERSION 0 +#endif + +#if defined(__GNUC__) && !defined(__clang__) +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +# define FMT_GCC_PRAGMA(arg) _Pragma(arg) +#else +# define FMT_GCC_VERSION 0 +# define FMT_GCC_PRAGMA(arg) +#endif + +#if defined(__INTEL_COMPILER) +# define FMT_ICC_VERSION __INTEL_COMPILER +#else +# define FMT_ICC_VERSION 0 +#endif + +#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) +# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION +#else +# define FMT_HAS_GXX_CXX11 0 +#endif + +// Check if constexpr std::char_traits<>::compare,length is supported. +#if defined(__GLIBCXX__) +# if __cplusplus >= 201703L && defined(_GLIBCXX_RELEASE) && \ + _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE. +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +# endif +#elif defined(_LIBCPP_VERSION) +# if __cplusplus >= 201703L && _LIBCPP_VERSION >= 4000 +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +# endif +#elif defined(_MSC_VER) +# if _MSVC_LANG >= 201703L && _MSC_VER >= 1914 +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +# endif +#endif +#ifndef FMT_CONSTEXPR_CHAR_TRAITS +# define FMT_CONSTEXPR_CHAR_TRAITS +#endif + +#ifdef __NVCC__ +# define FMT_NVCC __NVCC__ +#else +# define FMT_NVCC 0 +#endif + +#ifdef _MSC_VER +# define FMT_MSC_VER _MSC_VER +# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__)) +#else +# define FMT_MSC_VER 0 +# define FMT_MSC_WARNING(...) +#endif + +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif + +#if defined(__has_include) && !defined(__INTELLISENSE__) && \ + (!FMT_ICC_VERSION || FMT_ICC_VERSION >= 1600) +# define FMT_HAS_INCLUDE(x) __has_include(x) +#else +# define FMT_HAS_INCLUDE(x) 0 +#endif + +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \ + (__cplusplus >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \ + (__cplusplus >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +// Check if relaxed C++14 constexpr is supported. +// GCC doesn't allow throw in constexpr until version 6 (bug 67371). +#ifndef FMT_USE_CONSTEXPR +# define FMT_USE_CONSTEXPR \ + (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \ + (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) && \ + !FMT_NVCC && !FMT_ICC_VERSION +#endif +#if FMT_USE_CONSTEXPR +# define FMT_CONSTEXPR constexpr +# define FMT_CONSTEXPR_DECL constexpr +#else +# define FMT_CONSTEXPR +# define FMT_CONSTEXPR_DECL +#endif + +#ifndef FMT_OVERRIDE +# if FMT_HAS_FEATURE(cxx_override_control) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 +# define FMT_OVERRIDE override +# else +# define FMT_OVERRIDE +# endif +#endif + +// Check if exceptions are disabled. +#ifndef FMT_EXCEPTIONS +# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \ + FMT_MSC_VER && !_HAS_EXCEPTIONS +# define FMT_EXCEPTIONS 0 +# else +# define FMT_EXCEPTIONS 1 +# endif +#endif + +// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). +#ifndef FMT_USE_NOEXCEPT +# define FMT_USE_NOEXCEPT 0 +#endif + +#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 +# define FMT_DETECTED_NOEXCEPT noexcept +# define FMT_HAS_CXX11_NOEXCEPT 1 +#else +# define FMT_DETECTED_NOEXCEPT throw() +# define FMT_HAS_CXX11_NOEXCEPT 0 +#endif + +#ifndef FMT_NOEXCEPT +# if FMT_EXCEPTIONS || FMT_HAS_CXX11_NOEXCEPT +# define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT +# else +# define FMT_NOEXCEPT +# endif +#endif + +// [[noreturn]] is disabled on MSVC and NVCC because of bogus unreachable code +// warnings. +#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VER && \ + !FMT_NVCC +# define FMT_NORETURN [[noreturn]] +#else +# define FMT_NORETURN +#endif + +#ifndef FMT_MAYBE_UNUSED +# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) +# define FMT_MAYBE_UNUSED [[maybe_unused]] +# else +# define FMT_MAYBE_UNUSED +# endif +#endif + +#ifndef FMT_DEPRECATED +# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900 +# define FMT_DEPRECATED [[deprecated]] +# else +# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__) +# define FMT_DEPRECATED __attribute__((deprecated)) +# elif FMT_MSC_VER +# define FMT_DEPRECATED __declspec(deprecated) +# else +# define FMT_DEPRECATED /* deprecated */ +# endif +# endif +#endif + +// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers. +#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC +# define FMT_DEPRECATED_ALIAS +#else +# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED +#endif + +#ifndef FMT_INLINE +# if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_INLINE inline __attribute__((always_inline)) +# else +# define FMT_INLINE inline +# endif +#endif + +#ifndef FMT_USE_INLINE_NAMESPACES +# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \ + (FMT_MSC_VER >= 1900 && (!defined(_MANAGED) || !_MANAGED)) +# define FMT_USE_INLINE_NAMESPACES 1 +# else +# define FMT_USE_INLINE_NAMESPACES 0 +# endif +#endif + +#ifndef FMT_BEGIN_NAMESPACE +# if FMT_USE_INLINE_NAMESPACES +# define FMT_INLINE_NAMESPACE inline namespace +# define FMT_END_NAMESPACE \ + } \ + } +# else +# define FMT_INLINE_NAMESPACE namespace +# define FMT_END_NAMESPACE \ + } \ + using namespace v7; \ + } +# endif +# define FMT_BEGIN_NAMESPACE \ + namespace fmt { \ + FMT_INLINE_NAMESPACE v7 { +#endif + +#ifndef FMT_MODULE_EXPORT +# define FMT_MODULE_EXPORT +#endif +#ifndef FMT_MODULE_EXPORT_BEGIN +# define FMT_MODULE_EXPORT_BEGIN +#endif +#ifndef FMT_MODULE_EXPORT_END +# define FMT_MODULE_EXPORT_END +#endif +#ifndef FMT_BEGIN_DETAIL_NAMESPACE +# define FMT_BEGIN_DETAIL_NAMESPACE \ + namespace detail { +#endif +#ifndef FMT_END_DETAIL_NAMESPACE +# define FMT_END_DETAIL_NAMESPACE \ + } +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275) +# ifdef FMT_EXPORT +# define FMT_API __declspec(dllexport) +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# endif +#else +# define FMT_CLASS_API +#endif +#ifndef FMT_API +# define FMT_API +#endif + +#if FMT_GCC_VERSION +# define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden"))) +#else +# define FMT_GCC_VISIBILITY_HIDDEN +#endif + +// libc++ supports string_view in pre-c++17. +#if (FMT_HAS_INCLUDE(<string_view>) && \ + (__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \ + (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910) +# include <string_view> +# define FMT_USE_STRING_VIEW +#elif FMT_HAS_INCLUDE("experimental/string_view") && __cplusplus >= 201402L +# include <experimental/string_view> +# define FMT_USE_EXPERIMENTAL_STRING_VIEW +#endif + +#ifndef FMT_UNICODE +# define FMT_UNICODE !FMT_MSC_VER +#endif + +#ifndef FMT_COMPILE_TIME_CHECKS +# define FMT_COMPILE_TIME_CHECKS 0 +#endif + +#ifndef FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +# if defined(__cpp_nontype_template_args) && \ + ((FMT_GCC_VERSION >= 903 && __cplusplus >= 201709L) || \ + __cpp_nontype_template_args >= 201911L) +# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 1 +# else +# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 0 +# endif +#endif + +// Enable minimal optimizations for more compact code in debug mode. +FMT_GCC_PRAGMA("GCC push_options") +#ifndef __OPTIMIZE__ +FMT_GCC_PRAGMA("GCC optimize(\"Og\")") +#endif + +FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN + +// Implementations of enable_if_t and other metafunctions for older systems. +template <bool B, class T = void> +using enable_if_t = typename std::enable_if<B, T>::type; +template <bool B, class T, class F> +using conditional_t = typename std::conditional<B, T, F>::type; +template <bool B> using bool_constant = std::integral_constant<bool, B>; +template <typename T> +using remove_reference_t = typename std::remove_reference<T>::type; +template <typename T> +using remove_const_t = typename std::remove_const<T>::type; +template <typename T> +using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type; +template <typename T> struct type_identity { using type = T; }; +template <typename T> using type_identity_t = typename type_identity<T>::type; + +struct monostate {}; + +// An enable_if helper to be used in template parameters which results in much +// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed +// to workaround a bug in MSVC 2019 (see #1140 and #1186). +#ifdef FMT_DOC +# define FMT_ENABLE_IF(...) +#else +# define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 +#endif + +FMT_BEGIN_DETAIL_NAMESPACE + +constexpr FMT_INLINE bool is_constant_evaluated() FMT_NOEXCEPT { +#ifdef __cpp_lib_is_constant_evaluated + return std::is_constant_evaluated(); +#else + return false; +#endif +} + +// A helper function to suppress "conditional expression is constant" warnings. +template <typename T> constexpr T const_check(T value) { return value; } + +FMT_NORETURN FMT_API void assert_fail(const char* file, int line, + const char* message); + +#ifndef FMT_ASSERT +# ifdef NDEBUG +// FMT_ASSERT is not empty to avoid -Werror=empty-body. +# define FMT_ASSERT(condition, message) ((void)0) +# else +# define FMT_ASSERT(condition, message) \ + ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \ + ? (void)0 \ + : ::fmt::detail::assert_fail(__FILE__, __LINE__, (message))) +# endif +#endif + +#if defined(FMT_USE_STRING_VIEW) +template <typename Char> using std_string_view = std::basic_string_view<Char>; +#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) +template <typename Char> +using std_string_view = std::experimental::basic_string_view<Char>; +#else +template <typename T> struct std_string_view {}; +#endif + +#ifdef FMT_USE_INT128 +// Do nothing. +#elif defined(__SIZEOF_INT128__) && !FMT_NVCC && \ + !(FMT_CLANG_VERSION && FMT_MSC_VER) +# define FMT_USE_INT128 1 +using int128_t = __int128_t; +using uint128_t = __uint128_t; +#else +# define FMT_USE_INT128 0 +#endif +#if !FMT_USE_INT128 +struct int128_t {}; +struct uint128_t {}; +#endif + +// Casts a nonnegative integer to unsigned. +template <typename Int> +FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) { + FMT_ASSERT(value >= 0, "negative value"); + return static_cast<typename std::make_unsigned<Int>::type>(value); +} + +FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char micro[] = "\u00B5"; + +template <typename Char> constexpr bool is_unicode() { + return FMT_UNICODE || sizeof(Char) != 1 || + (sizeof(micro) == 3 && micro[0] == 0xC2 && micro[1] == 0xB5); +} + +FMT_END_DETAIL_NAMESPACE + +/** + An implementation of ``std::basic_string_view`` for pre-C++17. It provides a + subset of the API. ``fmt::basic_string_view`` is used for format strings even + if ``std::string_view`` is available to prevent issues when a library is + compiled with a different ``-std`` option than the client code (which is not + recommended). + */ +template <typename Char> class basic_string_view { + private: + const Char* data_; + size_t size_; + + public: + using value_type = Char; + using iterator = const Char*; + + constexpr basic_string_view() FMT_NOEXCEPT : data_(nullptr), size_(0) {} + + /** Constructs a string reference object from a C string and a size. */ + constexpr basic_string_view(const Char* s, size_t count) FMT_NOEXCEPT + : data_(s), + size_(count) {} + + /** + \rst + Constructs a string reference object from a C string computing + the size with ``std::char_traits<Char>::length``. + \endrst + */ + FMT_CONSTEXPR_CHAR_TRAITS + FMT_INLINE + basic_string_view(const Char* s) : data_(s) { + if (detail::const_check(std::is_same<Char, char>::value && + !detail::is_constant_evaluated())) + size_ = std::strlen(reinterpret_cast<const char*>(s)); + else + size_ = std::char_traits<Char>::length(s); + } + + /** Constructs a string reference from a ``std::basic_string`` object. */ + template <typename Traits, typename Alloc> + FMT_CONSTEXPR basic_string_view( + const std::basic_string<Char, Traits, Alloc>& s) FMT_NOEXCEPT + : data_(s.data()), + size_(s.size()) {} + + template <typename S, FMT_ENABLE_IF(std::is_same< + S, detail::std_string_view<Char>>::value)> + FMT_CONSTEXPR basic_string_view(S s) FMT_NOEXCEPT : data_(s.data()), + size_(s.size()) {} + + /** Returns a pointer to the string data. */ + constexpr const Char* data() const { return data_; } + + /** Returns the string size. */ + constexpr size_t size() const { return size_; } + + constexpr iterator begin() const { return data_; } + constexpr iterator end() const { return data_ + size_; } + + constexpr const Char& operator[](size_t pos) const { return data_[pos]; } + + FMT_CONSTEXPR void remove_prefix(size_t n) { + data_ += n; + size_ -= n; + } + + // Lexicographically compare this string reference to other. + FMT_CONSTEXPR_CHAR_TRAITS int compare(basic_string_view other) const { + size_t str_size = size_ < other.size_ ? size_ : other.size_; + int result = std::char_traits<Char>::compare(data_, other.data_, str_size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + FMT_CONSTEXPR_CHAR_TRAITS friend bool operator==(basic_string_view lhs, + basic_string_view rhs) { + return lhs.compare(rhs) == 0; + } + friend bool operator!=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) != 0; + } + friend bool operator<(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) < 0; + } + friend bool operator<=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) <= 0; + } + friend bool operator>(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) > 0; + } + friend bool operator>=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) >= 0; + } +}; + +using string_view = basic_string_view<char>; +using wstring_view = basic_string_view<wchar_t>; + +/** Specifies if ``T`` is a character type. Can be specialized by users. */ +template <typename T> struct is_char : std::false_type {}; +template <> struct is_char<char> : std::true_type {}; +template <> struct is_char<wchar_t> : std::true_type {}; + +/** + \rst + Returns a string view of `s`. In order to add custom string type support to + {fmt} provide an overload of `to_string_view` for it in the same namespace as + the type for the argument-dependent lookup to work. + + **Example**:: + + namespace my_ns { + inline string_view to_string_view(const my_string& s) { + return {s.data(), s.length()}; + } + } + std::string message = fmt::format(my_string("The answer is {}"), 42); + \endrst + */ +template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)> +FMT_INLINE basic_string_view<Char> to_string_view(const Char* s) { + return s; +} + +template <typename Char, typename Traits, typename Alloc> +inline basic_string_view<Char> to_string_view( + const std::basic_string<Char, Traits, Alloc>& s) { + return s; +} + +template <typename Char> +constexpr basic_string_view<Char> to_string_view(basic_string_view<Char> s) { + return s; +} + +template <typename Char, + FMT_ENABLE_IF(!std::is_empty<detail::std_string_view<Char>>::value)> +inline basic_string_view<Char> to_string_view(detail::std_string_view<Char> s) { + return s; +} + +// A base class for compile-time strings. It is defined in the fmt namespace to +// make formatting functions visible via ADL, e.g. format(FMT_STRING("{}"), 42). +struct compile_string {}; + +template <typename S> +struct is_compile_string : std::is_base_of<compile_string, S> {}; + +template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> +constexpr basic_string_view<typename S::char_type> to_string_view(const S& s) { + return s; +} + +FMT_BEGIN_DETAIL_NAMESPACE + +void to_string_view(...); +using fmt::v7::to_string_view; + +// Specifies whether S is a string type convertible to fmt::basic_string_view. +// It should be a constexpr function but MSVC 2017 fails to compile it in +// enable_if and MSVC 2015 fails to compile it as an alias template. +template <typename S> +struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> { +}; + +template <typename S, typename = void> struct char_t_impl {}; +template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> { + using result = decltype(to_string_view(std::declval<S>())); + using type = typename result::value_type; +}; + +// Reports a compile-time error if S is not a valid format string. +template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)> +FMT_INLINE void check_format_string(const S&) { +#ifdef FMT_ENFORCE_COMPILE_STRING + static_assert(is_compile_string<S>::value, + "FMT_ENFORCE_COMPILE_STRING requires all format strings to use " + "FMT_STRING."); +#endif +} +template <typename..., typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> +void check_format_string(S); + +struct error_handler { + constexpr error_handler() = default; + constexpr error_handler(const error_handler&) = default; + + // This function is intentionally not constexpr to give a compile-time error. + FMT_NORETURN FMT_API void on_error(const char* message); +}; + +FMT_END_DETAIL_NAMESPACE + +/** String's character type. */ +template <typename S> using char_t = typename detail::char_t_impl<S>::type; + +/** + \rst + Parsing context consisting of a format string range being parsed and an + argument counter for automatic indexing. + + You can use one of the following type aliases for common character types: + + +-----------------------+-------------------------------------+ + | Type | Definition | + +=======================+=====================================+ + | format_parse_context | basic_format_parse_context<char> | + +-----------------------+-------------------------------------+ + | wformat_parse_context | basic_format_parse_context<wchar_t> | + +-----------------------+-------------------------------------+ + \endrst + */ +template <typename Char, typename ErrorHandler = detail::error_handler> +class basic_format_parse_context : private ErrorHandler { + private: + basic_string_view<Char> format_str_; + int next_arg_id_; + + public: + using char_type = Char; + using iterator = typename basic_string_view<Char>::iterator; + + explicit constexpr basic_format_parse_context( + basic_string_view<Char> format_str, ErrorHandler eh = {}, + int next_arg_id = 0) + : ErrorHandler(eh), format_str_(format_str), next_arg_id_(next_arg_id) {} + + /** + Returns an iterator to the beginning of the format string range being + parsed. + */ + constexpr iterator begin() const FMT_NOEXCEPT { return format_str_.begin(); } + + /** + Returns an iterator past the end of the format string range being parsed. + */ + constexpr iterator end() const FMT_NOEXCEPT { return format_str_.end(); } + + /** Advances the begin iterator to ``it``. */ + FMT_CONSTEXPR void advance_to(iterator it) { + format_str_.remove_prefix(detail::to_unsigned(it - begin())); + } + + /** + Reports an error if using the manual argument indexing; otherwise returns + the next argument index and switches to the automatic indexing. + */ + FMT_CONSTEXPR int next_arg_id() { + // Don't check if the argument id is valid to avoid overhead and because it + // will be checked during formatting anyway. + if (next_arg_id_ >= 0) return next_arg_id_++; + on_error("cannot switch from manual to automatic argument indexing"); + return 0; + } + + /** + Reports an error if using the automatic argument indexing; otherwise + switches to the manual indexing. + */ + FMT_CONSTEXPR void check_arg_id(int) { + if (next_arg_id_ > 0) + on_error("cannot switch from automatic to manual argument indexing"); + else + next_arg_id_ = -1; + } + + FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {} + + FMT_CONSTEXPR void on_error(const char* message) { + ErrorHandler::on_error(message); + } + + constexpr ErrorHandler error_handler() const { return *this; } +}; + +using format_parse_context = basic_format_parse_context<char>; +using wformat_parse_context = basic_format_parse_context<wchar_t>; + +template <typename Context> class basic_format_arg; +template <typename Context> class basic_format_args; +template <typename Context> class dynamic_format_arg_store; + +// A formatter for objects of type T. +template <typename T, typename Char = char, typename Enable = void> +struct formatter { + // A deleted default constructor indicates a disabled formatter. + formatter() = delete; +}; + +// DEPRECATED! +// Specifies if T has an enabled formatter specialization. A type can be +// formattable even if it doesn't have a formatter e.g. via a conversion. +template <typename T, typename Context> +using has_formatter = + std::is_constructible<typename Context::template formatter_type<T>>; + +// Checks whether T is a container with contiguous storage. +template <typename T> struct is_contiguous : std::false_type {}; +template <typename Char> +struct is_contiguous<std::basic_string<Char>> : std::true_type {}; + +FMT_BEGIN_DETAIL_NAMESPACE + +// Extracts a reference to the container from back_insert_iterator. +template <typename Container> +inline Container& get_container(std::back_insert_iterator<Container> it) { + using bi_iterator = std::back_insert_iterator<Container>; + struct accessor : bi_iterator { + accessor(bi_iterator iter) : bi_iterator(iter) {} + using bi_iterator::container; + }; + return *accessor(it).container; +} + +/** + \rst + A contiguous memory buffer with an optional growing ability. It is an internal + class and shouldn't be used directly, only via `~fmt::basic_memory_buffer`. + \endrst + */ +template <typename T> class buffer { + private: + T* ptr_; + size_t size_; + size_t capacity_; + + protected: + // Don't initialize ptr_ since it is not accessed to save a few cycles. + FMT_MSC_WARNING(suppress : 26495) + buffer(size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {} + + buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) FMT_NOEXCEPT + : ptr_(p), + size_(sz), + capacity_(cap) {} + + ~buffer() = default; + + /** Sets the buffer data and capacity. */ + void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT { + ptr_ = buf_data; + capacity_ = buf_capacity; + } + + /** Increases the buffer capacity to hold at least *capacity* elements. */ + virtual void grow(size_t capacity) = 0; + + public: + using value_type = T; + using const_reference = const T&; + + buffer(const buffer&) = delete; + void operator=(const buffer&) = delete; + + T* begin() FMT_NOEXCEPT { return ptr_; } + T* end() FMT_NOEXCEPT { return ptr_ + size_; } + + const T* begin() const FMT_NOEXCEPT { return ptr_; } + const T* end() const FMT_NOEXCEPT { return ptr_ + size_; } + + /** Returns the size of this buffer. */ + size_t size() const FMT_NOEXCEPT { return size_; } + + /** Returns the capacity of this buffer. */ + size_t capacity() const FMT_NOEXCEPT { return capacity_; } + + /** Returns a pointer to the buffer data. */ + T* data() FMT_NOEXCEPT { return ptr_; } + + /** Returns a pointer to the buffer data. */ + const T* data() const FMT_NOEXCEPT { return ptr_; } + + /** Clears this buffer. */ + void clear() { size_ = 0; } + + // Tries resizing the buffer to contain *count* elements. If T is a POD type + // the new elements may not be initialized. + void try_resize(size_t count) { + try_reserve(count); + size_ = count <= capacity_ ? count : capacity_; + } + + // Tries increasing the buffer capacity to *new_capacity*. It can increase the + // capacity by a smaller amount than requested but guarantees there is space + // for at least one additional element either by increasing the capacity or by + // flushing the buffer if it is full. + void try_reserve(size_t new_capacity) { + if (new_capacity > capacity_) grow(new_capacity); + } + + void push_back(const T& value) { + try_reserve(size_ + 1); + ptr_[size_++] = value; + } + + /** Appends data to the end of the buffer. */ + template <typename U> void append(const U* begin, const U* end); + + template <typename I> T& operator[](I index) { return ptr_[index]; } + template <typename I> const T& operator[](I index) const { + return ptr_[index]; + } +}; + +struct buffer_traits { + explicit buffer_traits(size_t) {} + size_t count() const { return 0; } + size_t limit(size_t size) { return size; } +}; + +class fixed_buffer_traits { + private: + size_t count_ = 0; + size_t limit_; + + public: + explicit fixed_buffer_traits(size_t limit) : limit_(limit) {} + size_t count() const { return count_; } + size_t limit(size_t size) { + size_t n = limit_ > count_ ? limit_ - count_ : 0; + count_ += size; + return size < n ? size : n; + } +}; + +// A buffer that writes to an output iterator when flushed. +template <typename OutputIt, typename T, typename Traits = buffer_traits> +class iterator_buffer final : public Traits, public buffer<T> { + private: + OutputIt out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + protected: + void grow(size_t) final FMT_OVERRIDE { + if (this->size() == buffer_size) flush(); + } + void flush(); + + public: + explicit iterator_buffer(OutputIt out, size_t n = buffer_size) + : Traits(n), buffer<T>(data_, 0, buffer_size), out_(out) {} + ~iterator_buffer() { flush(); } + + OutputIt out() { + flush(); + return out_; + } + size_t count() const { return Traits::count() + this->size(); } +}; + +template <typename T> class iterator_buffer<T*, T> final : public buffer<T> { + protected: + void grow(size_t) final FMT_OVERRIDE {} + + public: + explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {} + + T* out() { return &*this->end(); } +}; + +// A buffer that writes to a container with the contiguous storage. +template <typename Container> +class iterator_buffer<std::back_insert_iterator<Container>, + enable_if_t<is_contiguous<Container>::value, + typename Container::value_type>> + final : public buffer<typename Container::value_type> { + private: + Container& container_; + + protected: + void grow(size_t capacity) final FMT_OVERRIDE { + container_.resize(capacity); + this->set(&container_[0], capacity); + } + + public: + explicit iterator_buffer(Container& c) + : buffer<typename Container::value_type>(c.size()), container_(c) {} + explicit iterator_buffer(std::back_insert_iterator<Container> out, size_t = 0) + : iterator_buffer(get_container(out)) {} + std::back_insert_iterator<Container> out() { + return std::back_inserter(container_); + } +}; + +// A buffer that counts the number of code units written discarding the output. +template <typename T = char> class counting_buffer final : public buffer<T> { + private: + enum { buffer_size = 256 }; + T data_[buffer_size]; + size_t count_ = 0; + + protected: + void grow(size_t) final FMT_OVERRIDE { + if (this->size() != buffer_size) return; + count_ += this->size(); + this->clear(); + } + + public: + counting_buffer() : buffer<T>(data_, 0, buffer_size) {} + + size_t count() { return count_ + this->size(); } +}; + +// An output iterator that appends to the buffer. +// It is used to reduce symbol sizes for the common case. +template <typename T> +class buffer_appender : public std::back_insert_iterator<buffer<T>> { + using base = std::back_insert_iterator<buffer<T>>; + + public: + using std::back_insert_iterator<buffer<T>>::back_insert_iterator; + buffer_appender(base it) : base(it) {} + using _Unchecked_type = buffer_appender; // Mark iterator as checked. + + buffer_appender& operator++() { + base::operator++(); + return *this; + } + + buffer_appender operator++(int) { + buffer_appender tmp = *this; + ++*this; + return tmp; + } +}; + +// Maps an output iterator into a buffer. +template <typename T, typename OutputIt> +iterator_buffer<OutputIt, T> get_buffer(OutputIt); +template <typename T> buffer<T>& get_buffer(buffer_appender<T>); + +template <typename OutputIt> OutputIt get_buffer_init(OutputIt out) { + return out; +} +template <typename T> buffer<T>& get_buffer_init(buffer_appender<T> out) { + return get_container(out); +} + +template <typename Buffer> +auto get_iterator(Buffer& buf) -> decltype(buf.out()) { + return buf.out(); +} +template <typename T> buffer_appender<T> get_iterator(buffer<T>& buf) { + return buffer_appender<T>(buf); +} + +template <typename T, typename Char = char, typename Enable = void> +struct fallback_formatter { + fallback_formatter() = delete; +}; + +// Specifies if T has an enabled fallback_formatter specialization. +template <typename T, typename Char> +using has_fallback_formatter = + std::is_constructible<fallback_formatter<T, Char>>; + +struct view {}; + +template <typename Char, typename T> struct named_arg : view { + const Char* name; + const T& value; + named_arg(const Char* n, const T& v) : name(n), value(v) {} +}; + +template <typename Char> struct named_arg_info { + const Char* name; + int id; +}; + +template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> +struct arg_data { + // args_[0].named_args points to named_args_ to avoid bloating format_args. + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[1 + (NUM_ARGS != 0 ? NUM_ARGS : +1)]; + named_arg_info<Char> named_args_[NUM_NAMED_ARGS]; + + template <typename... U> + arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {} + arg_data(const arg_data& other) = delete; + const T* args() const { return args_ + 1; } + named_arg_info<Char>* named_args() { return named_args_; } +}; + +template <typename T, typename Char, size_t NUM_ARGS> +struct arg_data<T, Char, NUM_ARGS, 0> { + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[NUM_ARGS != 0 ? NUM_ARGS : +1]; + + template <typename... U> + FMT_CONSTEXPR FMT_INLINE arg_data(const U&... init) : args_{init...} {} + FMT_CONSTEXPR FMT_INLINE const T* args() const { return args_; } + FMT_CONSTEXPR FMT_INLINE std::nullptr_t named_args() { return nullptr; } +}; + +template <typename Char> +inline void init_named_args(named_arg_info<Char>*, int, int) {} + +template <typename T> struct is_named_arg : std::false_type {}; +template <typename T> struct is_statically_named_arg : std::false_type {}; + +template <typename T, typename Char> +struct is_named_arg<named_arg<Char, T>> : std::true_type {}; + +template <typename Char, typename T, typename... Tail, + FMT_ENABLE_IF(!is_named_arg<T>::value)> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const T&, const Tail&... args) { + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename Char, typename T, typename... Tail, + FMT_ENABLE_IF(is_named_arg<T>::value)> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const T& arg, const Tail&... args) { + named_args[named_arg_count++] = {arg.name, arg_count}; + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename... Args> +FMT_CONSTEXPR FMT_INLINE void init_named_args(std::nullptr_t, int, int, + const Args&...) {} + +template <bool B = false> constexpr size_t count() { return B ? 1 : 0; } +template <bool B1, bool B2, bool... Tail> constexpr size_t count() { + return (B1 ? 1 : 0) + count<B2, Tail...>(); +} + +template <typename... Args> constexpr size_t count_named_args() { + return count<is_named_arg<Args>::value...>(); +} + +enum class type { + none_type, + // Integer types should go first, + int_type, + uint_type, + long_long_type, + ulong_long_type, + int128_type, + uint128_type, + bool_type, + char_type, + last_integer_type = char_type, + // followed by floating-point types. + float_type, + double_type, + long_double_type, + last_numeric_type = long_double_type, + cstring_type, + string_type, + pointer_type, + custom_type +}; + +// Maps core type T to the corresponding type enum constant. +template <typename T, typename Char> +struct type_constant : std::integral_constant<type, type::custom_type> {}; + +#define FMT_TYPE_CONSTANT(Type, constant) \ + template <typename Char> \ + struct type_constant<Type, Char> \ + : std::integral_constant<type, type::constant> {} + +FMT_TYPE_CONSTANT(int, int_type); +FMT_TYPE_CONSTANT(unsigned, uint_type); +FMT_TYPE_CONSTANT(long long, long_long_type); +FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type); +FMT_TYPE_CONSTANT(int128_t, int128_type); +FMT_TYPE_CONSTANT(uint128_t, uint128_type); +FMT_TYPE_CONSTANT(bool, bool_type); +FMT_TYPE_CONSTANT(Char, char_type); +FMT_TYPE_CONSTANT(float, float_type); +FMT_TYPE_CONSTANT(double, double_type); +FMT_TYPE_CONSTANT(long double, long_double_type); +FMT_TYPE_CONSTANT(const Char*, cstring_type); +FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type); +FMT_TYPE_CONSTANT(const void*, pointer_type); + +constexpr bool is_integral_type(type t) { + return t > type::none_type && t <= type::last_integer_type; +} + +constexpr bool is_arithmetic_type(type t) { + return t > type::none_type && t <= type::last_numeric_type; +} + +template <typename Char> struct string_value { + const Char* data; + size_t size; +}; + +template <typename Char> struct named_arg_value { + const named_arg_info<Char>* data; + size_t size; +}; + +template <typename Context> struct custom_value { + using parse_context = typename Context::parse_context_type; + const void* value; + void (*format)(const void* arg, parse_context& parse_ctx, Context& ctx); +}; + +// A formatting argument value. +template <typename Context> class value { + public: + using char_type = typename Context::char_type; + + union { + int int_value; + unsigned uint_value; + long long long_long_value; + unsigned long long ulong_long_value; + int128_t int128_value; + uint128_t uint128_value; + bool bool_value; + char_type char_value; + float float_value; + double double_value; + long double long_double_value; + const void* pointer; + string_value<char_type> string; + custom_value<Context> custom; + named_arg_value<char_type> named_args; + }; + + constexpr FMT_INLINE value(int val = 0) : int_value(val) {} + constexpr FMT_INLINE value(unsigned val) : uint_value(val) {} + constexpr FMT_INLINE value(long long val) : long_long_value(val) {} + constexpr FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {} + FMT_INLINE value(int128_t val) : int128_value(val) {} + FMT_INLINE value(uint128_t val) : uint128_value(val) {} + FMT_INLINE value(float val) : float_value(val) {} + FMT_INLINE value(double val) : double_value(val) {} + FMT_INLINE value(long double val) : long_double_value(val) {} + constexpr FMT_INLINE value(bool val) : bool_value(val) {} + constexpr FMT_INLINE value(char_type val) : char_value(val) {} + FMT_CONSTEXPR FMT_INLINE value(const char_type* val) { + string.data = val; + if (is_constant_evaluated()) string.size = {}; + } + FMT_CONSTEXPR FMT_INLINE value(basic_string_view<char_type> val) { + string.data = val.data(); + string.size = val.size(); + } + FMT_INLINE value(const void* val) : pointer(val) {} + FMT_INLINE value(const named_arg_info<char_type>* args, size_t size) + : named_args{args, size} {} + + template <typename T> FMT_INLINE value(const T& val) { + custom.value = &val; + // Get the formatter type through the context to allow different contexts + // have different extension points, e.g. `formatter<T>` for `format` and + // `printf_formatter<T>` for `printf`. + custom.format = format_custom_arg< + T, conditional_t<has_formatter<T, Context>::value, + typename Context::template formatter_type<T>, + fallback_formatter<T, char_type>>>; + } + + private: + // Formats an argument of a custom type, such as a user-defined class. + template <typename T, typename Formatter> + static void format_custom_arg(const void* arg, + typename Context::parse_context_type& parse_ctx, + Context& ctx) { + Formatter f; + parse_ctx.advance_to(f.parse(parse_ctx)); + ctx.advance_to(f.format(*static_cast<const T*>(arg), ctx)); + } +}; + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value); + +// To minimize the number of types we need to deal with, long is translated +// either to int or to long long depending on its size. +enum { long_short = sizeof(long) == sizeof(int) }; +using long_type = conditional_t<long_short, int, long long>; +using ulong_type = conditional_t<long_short, unsigned, unsigned long long>; + +struct unformattable {}; + +// Maps formatting arguments to core types. +template <typename Context> struct arg_mapper { + using char_type = typename Context::char_type; + + FMT_CONSTEXPR FMT_INLINE int map(signed char val) { return val; } + FMT_CONSTEXPR FMT_INLINE unsigned map(unsigned char val) { return val; } + FMT_CONSTEXPR FMT_INLINE int map(short val) { return val; } + FMT_CONSTEXPR FMT_INLINE unsigned map(unsigned short val) { return val; } + FMT_CONSTEXPR FMT_INLINE int map(int val) { return val; } + FMT_CONSTEXPR FMT_INLINE unsigned map(unsigned val) { return val; } + FMT_CONSTEXPR FMT_INLINE long_type map(long val) { return val; } + FMT_CONSTEXPR FMT_INLINE ulong_type map(unsigned long val) { return val; } + FMT_CONSTEXPR FMT_INLINE long long map(long long val) { return val; } + FMT_CONSTEXPR FMT_INLINE unsigned long long map(unsigned long long val) { + return val; + } + FMT_CONSTEXPR FMT_INLINE int128_t map(int128_t val) { return val; } + FMT_CONSTEXPR FMT_INLINE uint128_t map(uint128_t val) { return val; } + FMT_CONSTEXPR FMT_INLINE bool map(bool val) { return val; } + + template <typename T, FMT_ENABLE_IF(is_char<T>::value)> + FMT_CONSTEXPR FMT_INLINE char_type map(T val) { + static_assert( + std::is_same<T, char>::value || std::is_same<T, char_type>::value, + "mixing character types is disallowed"); + return val; + } + + FMT_CONSTEXPR FMT_INLINE float map(float val) { return val; } + FMT_CONSTEXPR FMT_INLINE double map(double val) { return val; } + FMT_CONSTEXPR FMT_INLINE long double map(long double val) { return val; } + + FMT_CONSTEXPR FMT_INLINE const char_type* map(char_type* val) { return val; } + FMT_CONSTEXPR FMT_INLINE const char_type* map(const char_type* val) { + return val; + } + template <typename T, FMT_ENABLE_IF(is_string<T>::value)> + FMT_CONSTEXPR FMT_INLINE basic_string_view<char_type> map(const T& val) { + static_assert(std::is_same<char_type, char_t<T>>::value, + "mixing character types is disallowed"); + return to_string_view(val); + } + template <typename T, + FMT_ENABLE_IF( + std::is_constructible<basic_string_view<char_type>, T>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE basic_string_view<char_type> map(const T& val) { + return basic_string_view<char_type>(val); + } + template < + typename T, + FMT_ENABLE_IF( + std::is_constructible<std_string_view<char_type>, T>::value && + !std::is_constructible<basic_string_view<char_type>, T>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE basic_string_view<char_type> map(const T& val) { + return std_string_view<char_type>(val); + } + FMT_CONSTEXPR FMT_INLINE const char* map(const signed char* val) { + static_assert(std::is_same<char_type, char>::value, "invalid string type"); + return reinterpret_cast<const char*>(val); + } + FMT_CONSTEXPR FMT_INLINE const char* map(const unsigned char* val) { + static_assert(std::is_same<char_type, char>::value, "invalid string type"); + return reinterpret_cast<const char*>(val); + } + FMT_CONSTEXPR FMT_INLINE const char* map(signed char* val) { + const auto* const_val = val; + return map(const_val); + } + FMT_CONSTEXPR FMT_INLINE const char* map(unsigned char* val) { + const auto* const_val = val; + return map(const_val); + } + + FMT_CONSTEXPR FMT_INLINE const void* map(void* val) { return val; } + FMT_CONSTEXPR FMT_INLINE const void* map(const void* val) { return val; } + FMT_CONSTEXPR FMT_INLINE const void* map(std::nullptr_t val) { return val; } + + // We use SFINAE instead of a const T* parameter to avoid conflicting with + // the C array overload. + template <typename T> + FMT_CONSTEXPR auto map(T) -> enable_if_t<std::is_pointer<T>::value, int> { + // Formatting of arbitrary pointers is disallowed. If you want to output + // a pointer cast it to "void *" or "const void *". In particular, this + // forbids formatting of "[const] volatile char *" which is printed as bool + // by iostreams. + static_assert(!sizeof(T), "formatting of non-void pointers is disallowed"); + return 0; + } + + template <typename T, std::size_t N> + FMT_CONSTEXPR FMT_INLINE auto map(const T (&values)[N]) -> const T (&)[N] { + return values; + } + + template <typename T, + FMT_ENABLE_IF(std::is_enum<T>::value && + !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> decltype(std::declval<arg_mapper>().map( + static_cast<typename std::underlying_type<T>::type>(val))) { + return map(static_cast<typename std::underlying_type<T>::type>(val)); + } + template <typename T, + FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value && + (has_formatter<T, Context>::value || + has_fallback_formatter<T, char_type>::value))> + FMT_CONSTEXPR FMT_INLINE const T& map(const T& val) { + return val; + } + + template <typename T, FMT_ENABLE_IF(is_named_arg<T>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& named_arg) + -> decltype(std::declval<arg_mapper>().map(named_arg.value)) { + return map(named_arg.value); + } + + unformattable map(...) { return {}; } +}; + +// A type constant after applying arg_mapper<Context>. +template <typename T, typename Context> +using mapped_type_constant = + type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())), + typename Context::char_type>; + +enum { packed_arg_bits = 4 }; +// Maximum number of arguments with packed types. +enum { max_packed_args = 62 / packed_arg_bits }; +enum : unsigned long long { is_unpacked_bit = 1ULL << 63 }; +enum : unsigned long long { has_named_args_bit = 1ULL << 62 }; + +FMT_END_DETAIL_NAMESPACE + +// A formatting argument. It is a trivially copyable/constructible type to +// allow storage in basic_memory_buffer. +template <typename Context> class basic_format_arg { + private: + detail::value<Context> value_; + detail::type type_; + + template <typename ContextType, typename T> + friend FMT_CONSTEXPR basic_format_arg<ContextType> detail::make_arg( + const T& value); + + template <typename Visitor, typename Ctx> + friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, + const basic_format_arg<Ctx>& arg) + -> decltype(vis(0)); + + friend class basic_format_args<Context>; + friend class dynamic_format_arg_store<Context>; + + using char_type = typename Context::char_type; + + template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> + friend struct detail::arg_data; + + basic_format_arg(const detail::named_arg_info<char_type>* args, size_t size) + : value_(args, size) {} + + public: + class handle { + public: + explicit handle(detail::custom_value<Context> custom) : custom_(custom) {} + + void format(typename Context::parse_context_type& parse_ctx, + Context& ctx) const { + custom_.format(custom_.value, parse_ctx, ctx); + } + + private: + detail::custom_value<Context> custom_; + }; + + constexpr basic_format_arg() : type_(detail::type::none_type) {} + + constexpr explicit operator bool() const FMT_NOEXCEPT { + return type_ != detail::type::none_type; + } + + detail::type type() const { return type_; } + + bool is_integral() const { return detail::is_integral_type(type_); } + bool is_arithmetic() const { return detail::is_arithmetic_type(type_); } +}; + +/** + \rst + Visits an argument dispatching to the appropriate visit method based on + the argument type. For example, if the argument type is ``double`` then + ``vis(value)`` will be called with the value of type ``double``. + \endrst + */ +template <typename Visitor, typename Context> +FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( + Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) { + using char_type = typename Context::char_type; + switch (arg.type_) { + case detail::type::none_type: + break; + case detail::type::int_type: + return vis(arg.value_.int_value); + case detail::type::uint_type: + return vis(arg.value_.uint_value); + case detail::type::long_long_type: + return vis(arg.value_.long_long_value); + case detail::type::ulong_long_type: + return vis(arg.value_.ulong_long_value); +#if FMT_USE_INT128 + case detail::type::int128_type: + return vis(arg.value_.int128_value); + case detail::type::uint128_type: + return vis(arg.value_.uint128_value); +#else + case detail::type::int128_type: + case detail::type::uint128_type: + break; +#endif + case detail::type::bool_type: + return vis(arg.value_.bool_value); + case detail::type::char_type: + return vis(arg.value_.char_value); + case detail::type::float_type: + return vis(arg.value_.float_value); + case detail::type::double_type: + return vis(arg.value_.double_value); + case detail::type::long_double_type: + return vis(arg.value_.long_double_value); + case detail::type::cstring_type: + return vis(arg.value_.string.data); + case detail::type::string_type: + return vis(basic_string_view<char_type>(arg.value_.string.data, + arg.value_.string.size)); + case detail::type::pointer_type: + return vis(arg.value_.pointer); + case detail::type::custom_type: + return vis(typename basic_format_arg<Context>::handle(arg.value_.custom)); + } + return vis(monostate()); +} + +FMT_BEGIN_DETAIL_NAMESPACE + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500 +// A workaround for gcc 4.8 to make void_t work in a SFINAE context. +template <typename... Ts> struct void_t_impl { using type = void; }; +template <typename... Ts> +using void_t = typename detail::void_t_impl<Ts...>::type; +#else +template <typename...> using void_t = void; +#endif + +template <typename It, typename T, typename Enable = void> +struct is_output_iterator : std::false_type {}; + +template <typename It, typename T> +struct is_output_iterator< + It, T, + void_t<typename std::iterator_traits<It>::iterator_category, + decltype(*std::declval<It>() = std::declval<T>())>> + : std::true_type {}; + +template <typename OutputIt> +struct is_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_back_insert_iterator<std::back_insert_iterator<Container>> + : std::true_type {}; + +template <typename OutputIt> +struct is_contiguous_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>> + : is_contiguous<Container> {}; +template <typename Char> +struct is_contiguous_back_insert_iterator<buffer_appender<Char>> + : std::true_type {}; + +// A type-erased reference to an std::locale to avoid heavy <locale> include. +class locale_ref { + private: + const void* locale_; // A type-erased pointer to std::locale. + + public: + constexpr locale_ref() : locale_(nullptr) {} + template <typename Locale> explicit locale_ref(const Locale& loc); + + explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; } + + template <typename Locale> Locale get() const; +}; + +template <typename> constexpr unsigned long long encode_types() { return 0; } + +template <typename Context, typename Arg, typename... Args> +constexpr unsigned long long encode_types() { + return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) | + (encode_types<Context, Args...>() << packed_arg_bits); +} + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value) { + basic_format_arg<Context> arg; + arg.type_ = mapped_type_constant<T, Context>::value; + arg.value_ = arg_mapper<Context>().map(value); + return arg; +} + +// The type template parameter is there to avoid an ODR violation when using +// a fallback formatter in one translation unit and an implicit conversion in +// another (not recommended). +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(IS_PACKED)> +FMT_CONSTEXPR FMT_INLINE value<Context> make_arg(const T& val) { + const auto& arg = arg_mapper<Context>().map(val); + static_assert( + !std::is_same<decltype(arg), const unformattable&>::value, + "Cannot format an argument. To make type T formattable provide a " + "formatter<T> specialization: https://fmt.dev/latest/api.html#udt"); + return arg; +} + +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(!IS_PACKED)> +inline basic_format_arg<Context> make_arg(const T& value) { + return make_arg<Context>(value); +} + +FMT_END_DETAIL_NAMESPACE + +// Formatting context. +template <typename OutputIt, typename Char> class basic_format_context { + public: + /** The character type for the output. */ + using char_type = Char; + + private: + OutputIt out_; + basic_format_args<basic_format_context> args_; + detail::locale_ref loc_; + + public: + using iterator = OutputIt; + using format_arg = basic_format_arg<basic_format_context>; + using parse_context_type = basic_format_parse_context<Char>; + template <typename T> using formatter_type = formatter<T, char_type>; + + basic_format_context(basic_format_context&&) = default; + basic_format_context(const basic_format_context&) = delete; + void operator=(const basic_format_context&) = delete; + /** + Constructs a ``basic_format_context`` object. References to the arguments are + stored in the object so make sure they have appropriate lifetimes. + */ + constexpr basic_format_context( + OutputIt out, basic_format_args<basic_format_context> ctx_args, + detail::locale_ref loc = detail::locale_ref()) + : out_(out), args_(ctx_args), loc_(loc) {} + + constexpr format_arg arg(int id) const { return args_.get(id); } + FMT_CONSTEXPR format_arg arg(basic_string_view<char_type> name) { + return args_.get(name); + } + int arg_id(basic_string_view<char_type> name) { return args_.get_id(name); } + const basic_format_args<basic_format_context>& args() const { return args_; } + + FMT_CONSTEXPR detail::error_handler error_handler() { return {}; } + void on_error(const char* message) { error_handler().on_error(message); } + + // Returns an iterator to the beginning of the output range. + FMT_CONSTEXPR iterator out() { return out_; } + + // Advances the begin iterator to ``it``. + void advance_to(iterator it) { + if (!detail::is_back_insert_iterator<iterator>()) out_ = it; + } + + FMT_CONSTEXPR detail::locale_ref locale() { return loc_; } +}; + +template <typename Char> +using buffer_context = + basic_format_context<detail::buffer_appender<Char>, Char>; +using format_context = buffer_context<char>; +using wformat_context = buffer_context<wchar_t>; + +// Workaround an alias issue: https://stackoverflow.com/q/62767544/471164. +#define FMT_BUFFER_CONTEXT(Char) \ + basic_format_context<detail::buffer_appender<Char>, Char> + +template <typename T, typename Char = char> +using is_formattable = bool_constant< + !std::is_same<decltype(detail::arg_mapper<buffer_context<Char>>().map( + std::declval<T>())), + detail::unformattable>::value && + !detail::has_fallback_formatter<T, Char>::value>; + +/** + \rst + An array of references to arguments. It can be implicitly converted into + `~fmt::basic_format_args` for passing into type-erased formatting functions + such as `~fmt::vformat`. + \endrst + */ +template <typename Context, typename... Args> +class format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + static const size_t num_args = sizeof...(Args); + static const size_t num_named_args = detail::count_named_args<Args...>(); + static const bool is_packed = num_args <= detail::max_packed_args; + + using value_type = conditional_t<is_packed, detail::value<Context>, + basic_format_arg<Context>>; + + detail::arg_data<value_type, typename Context::char_type, num_args, + num_named_args> + data_; + + friend class basic_format_args<Context>; + + static constexpr unsigned long long desc = + (is_packed ? detail::encode_types<Context, Args...>() + : detail::is_unpacked_bit | num_args) | + (num_named_args != 0 + ? static_cast<unsigned long long>(detail::has_named_args_bit) + : 0); + + public: + FMT_CONSTEXPR FMT_INLINE format_arg_store(const Args&... args) + : +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + basic_format_args<Context>(*this), +#endif + data_{detail::make_arg< + is_packed, Context, + detail::mapped_type_constant<Args, Context>::value>(args)...} { + detail::init_named_args(data_.named_args(), 0, 0, args...); + } +}; + +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::format_args`. `Context` + can be omitted in which case it defaults to `~fmt::context`. + See `~fmt::arg` for lifetime considerations. + \endrst + */ +template <typename Context = format_context, typename... Args> +constexpr format_arg_store<Context, Args...> make_format_args( + const Args&... args) { + return {args...}; +} + +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references + to arguments and can be implicitly converted to `~fmt::format_args`. + If ``format_str`` is a compile-time string then `make_args_checked` checks + its validity at compile time. + \endrst + */ +template <typename... Args, typename S, typename Char = char_t<S>> +FMT_INLINE auto make_args_checked(const S& format_str, + const remove_reference_t<Args>&... args) + -> format_arg_store<buffer_context<Char>, remove_reference_t<Args>...> { + static_assert( + detail::count<( + std::is_base_of<detail::view, remove_reference_t<Args>>::value && + std::is_reference<Args>::value)...>() == 0, + "passing views as lvalues is disallowed"); + detail::check_format_string<Args...>(format_str); + return {args...}; +} + +/** + \rst + Returns a named argument to be used in a formatting function. + It should only be used in a call to a formatting function or + `dynamic_format_arg_store::push_back`. + + **Example**:: + + fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23)); + \endrst + */ +template <typename Char, typename T> +inline detail::named_arg<Char, T> arg(const Char* name, const T& arg) { + static_assert(!detail::is_named_arg<T>(), "nested named arguments"); + return {name, arg}; +} + +/** + \rst + A view of a collection of formatting arguments. To avoid lifetime issues it + should only be used as a parameter type in type-erased functions such as + ``vformat``:: + + void vlog(string_view format_str, format_args args); // OK + format_args args = make_format_args(42); // Error: dangling reference + \endrst + */ +template <typename Context> class basic_format_args { + public: + using size_type = int; + using format_arg = basic_format_arg<Context>; + + private: + // A descriptor that contains information about formatting arguments. + // If the number of arguments is less or equal to max_packed_args then + // argument types are passed in the descriptor. This reduces binary code size + // per formatting function call. + unsigned long long desc_; + union { + // If is_packed() returns true then argument values are stored in values_; + // otherwise they are stored in args_. This is done to improve cache + // locality and reduce compiled code size since storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const detail::value<Context>* values_; + const format_arg* args_; + }; + + constexpr bool is_packed() const { + return (desc_ & detail::is_unpacked_bit) == 0; + } + bool has_named_args() const { + return (desc_ & detail::has_named_args_bit) != 0; + } + + FMT_CONSTEXPR detail::type type(int index) const { + int shift = index * detail::packed_arg_bits; + unsigned int mask = (1 << detail::packed_arg_bits) - 1; + return static_cast<detail::type>((desc_ >> shift) & mask); + } + + constexpr FMT_INLINE basic_format_args(unsigned long long desc, + const detail::value<Context>* values) + : desc_(desc), values_(values) {} + constexpr basic_format_args(unsigned long long desc, const format_arg* args) + : desc_(desc), args_(args) {} + + public: + constexpr basic_format_args() : desc_(0), args_(nullptr) {} + + /** + \rst + Constructs a `basic_format_args` object from `~fmt::format_arg_store`. + \endrst + */ + template <typename... Args> + constexpr FMT_INLINE basic_format_args( + const format_arg_store<Context, Args...>& store) + : basic_format_args(format_arg_store<Context, Args...>::desc, + store.data_.args()) {} + + /** + \rst + Constructs a `basic_format_args` object from + `~fmt::dynamic_format_arg_store`. + \endrst + */ + constexpr FMT_INLINE basic_format_args( + const dynamic_format_arg_store<Context>& store) + : basic_format_args(store.get_types(), store.data()) {} + + /** + \rst + Constructs a `basic_format_args` object from a dynamic set of arguments. + \endrst + */ + constexpr basic_format_args(const format_arg* args, int count) + : basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count), + args) {} + + /** Returns the argument with the specified id. */ + FMT_CONSTEXPR format_arg get(int id) const { + format_arg arg; + if (!is_packed()) { + if (id < max_size()) arg = args_[id]; + return arg; + } + if (id >= detail::max_packed_args) return arg; + arg.type_ = type(id); + if (arg.type_ == detail::type::none_type) return arg; + arg.value_ = values_[id]; + return arg; + } + + template <typename Char> format_arg get(basic_string_view<Char> name) const { + int id = get_id(name); + return id >= 0 ? get(id) : format_arg(); + } + + template <typename Char> int get_id(basic_string_view<Char> name) const { + if (!has_named_args()) return -1; + const auto& named_args = + (is_packed() ? values_[-1] : args_[-1].value_).named_args; + for (size_t i = 0; i < named_args.size; ++i) { + if (named_args.data[i].name == name) return named_args.data[i].id; + } + return -1; + } + + int max_size() const { + unsigned long long max_packed = detail::max_packed_args; + return static_cast<int>(is_packed() ? max_packed + : desc_ & ~detail::is_unpacked_bit); + } +}; + +/** An alias to ``basic_format_args<format_context>``. */ +// Separate types would result in shorter symbols but break ABI compatibility +// between clang and gcc on ARM (#1919). +using format_args = basic_format_args<format_context>; +using wformat_args = basic_format_args<wformat_context>; + +// We cannot use enum classes as bit fields because of a gcc bug +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414. +namespace align { +enum type { none, left, right, center, numeric }; +} +using align_t = align::type; +namespace sign { +enum type { none, minus, plus, space }; +} +using sign_t = sign::type; + +FMT_BEGIN_DETAIL_NAMESPACE + +void throw_format_error(const char* message); + +// Workaround an array initialization issue in gcc 4.8. +template <typename Char> struct fill_t { + private: + enum { max_size = 4 }; + Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)}; + unsigned char size_ = 1; + + public: + FMT_CONSTEXPR void operator=(basic_string_view<Char> s) { + auto size = s.size(); + if (size > max_size) return throw_format_error("invalid fill"); + for (size_t i = 0; i < size; ++i) data_[i] = s[i]; + size_ = static_cast<unsigned char>(size); + } + + constexpr size_t size() const { return size_; } + constexpr const Char* data() const { return data_; } + + FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; } + FMT_CONSTEXPR const Char& operator[](size_t index) const { + return data_[index]; + } +}; + +FMT_END_DETAIL_NAMESPACE + +// Format specifiers for built-in and string types. +template <typename Char> struct basic_format_specs { + int width; + int precision; + char type; + align_t align : 4; + sign_t sign : 3; + bool alt : 1; // Alternate form ('#'). + bool localized : 1; + detail::fill_t<Char> fill; + + constexpr basic_format_specs() + : width(0), + precision(-1), + type(0), + align(align::none), + sign(sign::none), + alt(false), + localized(false) {} +}; + +using format_specs = basic_format_specs<char>; + +FMT_BEGIN_DETAIL_NAMESPACE + +enum class arg_id_kind { none, index, name }; + +// An argument reference. +template <typename Char> struct arg_ref { + FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} + + FMT_CONSTEXPR explicit arg_ref(int index) + : kind(arg_id_kind::index), val(index) {} + FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name) + : kind(arg_id_kind::name), val(name) {} + + FMT_CONSTEXPR arg_ref& operator=(int idx) { + kind = arg_id_kind::index; + val.index = idx; + return *this; + } + + arg_id_kind kind; + union value { + FMT_CONSTEXPR value(int id = 0) : index{id} {} + FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {} + + int index; + basic_string_view<Char> name; + } val; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow re-using the same parsed specifiers with +// different sets of arguments (precompilation of format strings). +template <typename Char> +struct dynamic_format_specs : basic_format_specs<Char> { + arg_ref<Char> width_ref; + arg_ref<Char> precision_ref; +}; + +struct auto_id {}; + +// A format specifier handler that sets fields in basic_format_specs. +template <typename Char> class specs_setter { + public: + explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs) + : specs_(specs) {} + + FMT_CONSTEXPR specs_setter(const specs_setter& other) + : specs_(other.specs_) {} + + FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } + FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) { + specs_.fill = fill; + } + FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; } + FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; } + FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; } + FMT_CONSTEXPR void on_hash() { specs_.alt = true; } + FMT_CONSTEXPR void on_localized() { specs_.localized = true; } + + FMT_CONSTEXPR void on_zero() { + specs_.align = align::numeric; + specs_.fill[0] = Char('0'); + } + + FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } + FMT_CONSTEXPR void on_precision(int precision) { + specs_.precision = precision; + } + FMT_CONSTEXPR void end_precision() {} + + FMT_CONSTEXPR void on_type(Char type) { + specs_.type = static_cast<char>(type); + } + + protected: + basic_format_specs<Char>& specs_; +}; + +// Format spec handler that saves references to arguments representing dynamic +// width and precision to be resolved at formatting time. +template <typename ParseContext> +class dynamic_specs_handler + : public specs_setter<typename ParseContext::char_type> { + public: + using char_type = typename ParseContext::char_type; + + FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs, + ParseContext& ctx) + : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {} + + FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other) + : specs_setter<char_type>(other), + specs_(other.specs_), + context_(other.context_) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + specs_.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + specs_.precision_ref = make_arg_ref(arg_id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + using arg_ref_type = arg_ref<char_type>; + + FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) { + context_.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) { + return arg_ref_type(context_.next_arg_id()); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) { + context_.check_arg_id(arg_id); + basic_string_view<char_type> format_str( + context_.begin(), to_unsigned(context_.end() - context_.begin())); + return arg_ref_type(arg_id); + } + + dynamic_format_specs<char_type>& specs_; + ParseContext& context_; +}; + +template <typename Char> constexpr bool is_ascii_letter(Char c) { + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); +} + +// Converts a character to ASCII. Returns a number > 127 on conversion failure. +template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)> +constexpr Char to_ascii(Char value) { + return value; +} +template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)> +constexpr typename std::underlying_type<Char>::type to_ascii(Char value) { + return value; +} + +template <typename Char> +FMT_CONSTEXPR int code_point_length(const Char* begin) { + if (const_check(sizeof(Char) != 1)) return 1; + constexpr char lengths[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 4, 0}; + int len = lengths[static_cast<unsigned char>(*begin) >> 3]; + + // Compute the pointer to the next character early so that the next + // iteration can start working on the next character. Neither Clang + // nor GCC figure out this reordering on their own. + return len + !len; +} + +// Parses the range [begin, end) as an unsigned integer. This function assumes +// that the range is non-empty and the first character is a digit. +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end, + ErrorHandler&& eh) { + FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); + unsigned value = 0; + // Convert to unsigned to prevent a warning. + const unsigned max_int = to_unsigned(INT_MAX); + unsigned big = max_int / 10; + do { + // Check for overflow. + if (value > big) { + value = max_int + 1; + break; + } + value = value * 10 + unsigned(*begin - '0'); + ++begin; + } while (begin != end && '0' <= *begin && *begin <= '9'); + if (value > max_int) eh.on_error("number is too big"); + return static_cast<int>(value); +} + +// Parses fill and alignment. +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end, + Handler&& handler) { + FMT_ASSERT(begin != end, ""); + auto align = align::none; + auto p = begin + code_point_length(begin); + if (p >= end) p = begin; + for (;;) { + switch (to_ascii(*p)) { + case '<': + align = align::left; + break; + case '>': + align = align::right; + break; + case '^': + align = align::center; + break; + default: + break; + } + if (align != align::none) { + if (p != begin) { + auto c = *begin; + if (c == '{') + return handler.on_error("invalid fill character '{'"), begin; + handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin))); + begin = p + 1; + } else + ++begin; + handler.on_align(align); + break; + } else if (p == begin) { + break; + } + p = begin; + } + return begin; +} + +template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +template <typename Char, typename IDHandler> +FMT_CONSTEXPR const Char* do_parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) { + FMT_ASSERT(begin != end, ""); + Char c = *begin; + if (c >= '0' && c <= '9') { + int index = 0; + if (c != '0') + index = parse_nonnegative_int(begin, end, handler); + else + ++begin; + if (begin == end || (*begin != '}' && *begin != ':')) + handler.on_error("invalid format string"); + else + handler(index); + return begin; + } + if (!is_name_start(c)) { + handler.on_error("invalid format string"); + return begin; + } + auto it = begin; + do { + ++it; + } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9'))); + handler(basic_string_view<Char>(begin, to_unsigned(it - begin))); + return it; +} + +template <typename Char, typename IDHandler> +FMT_CONSTEXPR_DECL FMT_INLINE const Char* parse_arg_id(const Char* begin, + const Char* end, + IDHandler&& handler) { + Char c = *begin; + if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler); + handler(); + return begin; +} + +// Adapts SpecHandler to IDHandler API for dynamic width. +template <typename SpecHandler, typename Char> struct width_adapter { + explicit FMT_CONSTEXPR width_adapter(SpecHandler& h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_width(id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } + + SpecHandler& handler; +}; + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_width(const Char* begin, const Char* end, + Handler&& handler) { + FMT_ASSERT(begin != end, ""); + if ('0' <= *begin && *begin <= '9') { + handler.on_width(parse_nonnegative_int(begin, end, handler)); + } else if (*begin == '{') { + ++begin; + if (begin != end) + begin = parse_arg_id(begin, end, width_adapter<Handler, Char>(handler)); + if (begin == end || *begin != '}') + return handler.on_error("invalid format string"), begin; + ++begin; + } + return begin; +} + +// Adapts SpecHandler to IDHandler API for dynamic precision. +template <typename SpecHandler, typename Char> struct precision_adapter { + explicit FMT_CONSTEXPR precision_adapter(SpecHandler& h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_precision(id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } + + SpecHandler& handler; +}; + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_precision(const Char* begin, const Char* end, + Handler&& handler) { + ++begin; + auto c = begin != end ? *begin : Char(); + if ('0' <= c && c <= '9') { + handler.on_precision(parse_nonnegative_int(begin, end, handler)); + } else if (c == '{') { + ++begin; + if (begin != end) { + begin = + parse_arg_id(begin, end, precision_adapter<Handler, Char>(handler)); + } + if (begin == end || *begin++ != '}') + return handler.on_error("invalid format string"), begin; + } else { + return handler.on_error("missing precision specifier"), begin; + } + handler.end_precision(); + return begin; +} + +// Parses standard format specifiers and sends notifications about parsed +// components to handler. +template <typename Char, typename SpecHandler> +FMT_CONSTEXPR_DECL FMT_INLINE const Char* parse_format_specs( + const Char* begin, const Char* end, SpecHandler&& handler) { + if (begin + 1 < end && begin[1] == '}' && is_ascii_letter(*begin) && + *begin != 'L') { + handler.on_type(*begin++); + return begin; + } + + if (begin == end) return begin; + + begin = parse_align(begin, end, handler); + if (begin == end) return begin; + + // Parse sign. + switch (to_ascii(*begin)) { + case '+': + handler.on_plus(); + ++begin; + break; + case '-': + handler.on_minus(); + ++begin; + break; + case ' ': + handler.on_space(); + ++begin; + break; + default: + break; + } + if (begin == end) return begin; + + if (*begin == '#') { + handler.on_hash(); + if (++begin == end) return begin; + } + + // Parse zero flag. + if (*begin == '0') { + handler.on_zero(); + if (++begin == end) return begin; + } + + begin = parse_width(begin, end, handler); + if (begin == end) return begin; + + // Parse precision. + if (*begin == '.') { + begin = parse_precision(begin, end, handler); + if (begin == end) return begin; + } + + if (*begin == 'L') { + handler.on_localized(); + ++begin; + } + + // Parse type. + if (begin != end && *begin != '}') handler.on_type(*begin++); + return begin; +} + +// Return the result via the out param to workaround gcc bug 77539. +template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*> +FMT_CONSTEXPR bool find(Ptr first, Ptr last, T value, Ptr& out) { + for (out = first; out != last; ++out) { + if (*out == value) return true; + } + return false; +} + +template <> +inline bool find<false, char>(const char* first, const char* last, char value, + const char*& out) { + out = static_cast<const char*>( + std::memchr(first, value, to_unsigned(last - first))); + return out != nullptr; +} + +template <typename Handler, typename Char> struct id_adapter { + Handler& handler; + int arg_id; + + FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); } + FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + arg_id = handler.on_arg_id(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } +}; + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_replacement_field(const Char* begin, + const Char* end, + Handler&& handler) { + ++begin; + if (begin == end) return handler.on_error("invalid format string"), end; + if (*begin == '}') { + handler.on_replacement_field(handler.on_arg_id(), begin); + } else if (*begin == '{') { + handler.on_text(begin, begin + 1); + } else { + auto adapter = id_adapter<Handler, Char>{handler, 0}; + begin = parse_arg_id(begin, end, adapter); + Char c = begin != end ? *begin : Char(); + if (c == '}') { + handler.on_replacement_field(adapter.arg_id, begin); + } else if (c == ':') { + begin = handler.on_format_specs(adapter.arg_id, begin + 1, end); + if (begin == end || *begin != '}') + return handler.on_error("unknown format specifier"), end; + } else { + return handler.on_error("missing '}' in format string"), end; + } + } + return begin + 1; +} + +template <bool IS_CONSTEXPR, typename Char, typename Handler> +FMT_CONSTEXPR_DECL FMT_INLINE void parse_format_string( + basic_string_view<Char> format_str, Handler&& handler) { + // this is most likely a name-lookup defect in msvc's modules implementation + using detail::find; + + auto begin = format_str.data(); + auto end = begin + format_str.size(); + if (end - begin < 32) { + // Use a simple loop instead of memchr for small strings. + const Char* p = begin; + while (p != end) { + auto c = *p++; + if (c == '{') { + handler.on_text(begin, p - 1); + begin = p = parse_replacement_field(p - 1, end, handler); + } else if (c == '}') { + if (p == end || *p != '}') + return handler.on_error("unmatched '}' in format string"); + handler.on_text(begin, p); + begin = ++p; + } + } + handler.on_text(begin, end); + return; + } + struct writer { + FMT_CONSTEXPR void operator()(const Char* pbegin, const Char* pend) { + if (pbegin == pend) return; + for (;;) { + const Char* p = nullptr; + if (!find<IS_CONSTEXPR>(pbegin, pend, '}', p)) + return handler_.on_text(pbegin, pend); + ++p; + if (p == pend || *p != '}') + return handler_.on_error("unmatched '}' in format string"); + handler_.on_text(pbegin, p); + pbegin = p + 1; + } + } + Handler& handler_; + } write{handler}; + while (begin != end) { + // Doing two passes with memchr (one for '{' and another for '}') is up to + // 2.5x faster than the naive one-pass implementation on big format strings. + const Char* p = begin; + if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, '{', p)) + return write(begin, end); + write(begin, p); + begin = parse_replacement_field(p, end, handler); + } +} + +template <typename T, typename ParseContext> +FMT_CONSTEXPR const typename ParseContext::char_type* parse_format_specs( + ParseContext& ctx) { + using char_type = typename ParseContext::char_type; + using context = buffer_context<char_type>; + using mapped_type = conditional_t< + mapped_type_constant<T, context>::value != type::custom_type, + decltype(arg_mapper<context>().map(std::declval<const T&>())), T>; + auto f = conditional_t<has_formatter<mapped_type, context>::value, + formatter<mapped_type, char_type>, + fallback_formatter<T, char_type>>(); + return f.parse(ctx); +} + +// A parse context with extra argument id checks. It is only used at compile +// time because adding checks at runtime would introduce substantial overhead +// and would be redundant since argument ids are checked when arguments are +// retrieved anyway. +template <typename Char, typename ErrorHandler = error_handler> +class compile_parse_context + : public basic_format_parse_context<Char, ErrorHandler> { + private: + int num_args_; + using base = basic_format_parse_context<Char, ErrorHandler>; + + public: + explicit FMT_CONSTEXPR compile_parse_context( + basic_string_view<Char> format_str, int num_args = INT_MAX, + ErrorHandler eh = {}) + : base(format_str, eh), num_args_(num_args) {} + + FMT_CONSTEXPR int next_arg_id() { + int id = base::next_arg_id(); + if (id >= num_args_) this->on_error("argument not found"); + return id; + } + + FMT_CONSTEXPR void check_arg_id(int id) { + base::check_arg_id(id); + if (id >= num_args_) this->on_error("argument not found"); + } + using base::check_arg_id; +}; + +constexpr int invalid_arg_index = -1; + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template <int N, typename T, typename... Args, typename Char> +constexpr int get_arg_index_by_name(basic_string_view<Char> name) { + if constexpr (detail::is_statically_named_arg<T>()) { + if (name == T::name) return N; + } + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<N + 1, Args...>(name); + return invalid_arg_index; +} +#endif + +template <typename... Args, typename Char> +FMT_CONSTEXPR int get_arg_index_by_name(basic_string_view<Char> name) { +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<0, Args...>(name); +#endif + (void)name; + return invalid_arg_index; +} + +template <typename Char, typename ErrorHandler, typename... Args> +class format_string_checker { + public: + explicit FMT_CONSTEXPR format_string_checker( + basic_string_view<Char> format_str, ErrorHandler eh) + : context_(format_str, num_args, eh), + parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {} + + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + + FMT_CONSTEXPR int on_arg_id() { return context_.next_arg_id(); } + FMT_CONSTEXPR int on_arg_id(int id) { return context_.check_arg_id(id), id; } + FMT_CONSTEXPR int on_arg_id(basic_string_view<Char> id) { +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS + auto index = get_arg_index_by_name<Args...>(id); + if (index == invalid_arg_index) on_error("named argument is not found"); + return context_.check_arg_id(index), index; +#else + (void)id; + on_error("compile-time checks for named arguments require C++20 support"); + return 0; +#endif + } + + FMT_CONSTEXPR void on_replacement_field(int, const Char*) {} + + FMT_CONSTEXPR const Char* on_format_specs(int id, const Char* begin, + const Char*) { + advance_to(context_, begin); + // id >= 0 check is a workaround for gcc 10 bug (#2065). + return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin; + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + using parse_context_type = compile_parse_context<Char, ErrorHandler>; + enum { num_args = sizeof...(Args) }; + + // Format specifier parsing function. + using parse_func = const Char* (*)(parse_context_type&); + + parse_context_type context_; + parse_func parse_funcs_[num_args > 0 ? num_args : 1]; +}; + +template <typename... Args, typename S, + enable_if_t<(is_compile_string<S>::value), int>> +void check_format_string(S format_str) { + FMT_CONSTEXPR_DECL auto s = to_string_view(format_str); + using checker = format_string_checker<typename S::char_type, error_handler, + remove_cvref_t<Args>...>; + FMT_CONSTEXPR_DECL bool invalid_format = + (parse_format_string<true>(s, checker(s, {})), true); + (void)invalid_format; +} + +// Converts string literals to basic_string_view. +template <typename Char, size_t N> +FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view( + const Char (&s)[N]) { + // Remove trailing null character if needed. Won't be present if this is used + // with raw character array (i.e. not defined as a string). + return {s, + N - ((std::char_traits<Char>::to_int_type(s[N - 1]) == 0) ? 1 : 0)}; +} + +// Converts string_view to basic_string_view. +template <typename Char> +FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view( + const std_string_view<Char>& s) { + return {s.data(), s.size()}; +} + +#define FMT_STRING_IMPL(s, base) \ + [] { \ + /* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \ + /* Use a macro-like name to avoid shadowing warnings. */ \ + struct FMT_GCC_VISIBILITY_HIDDEN FMT_COMPILE_STRING : base { \ + using char_type = fmt::remove_cvref_t<decltype(s[0])>; \ + FMT_MAYBE_UNUSED FMT_CONSTEXPR \ + operator fmt::basic_string_view<char_type>() const { \ + return fmt::detail::compile_string_to_view<char_type>(s); \ + } \ + }; \ + return FMT_COMPILE_STRING(); \ + }() + +/** + \rst + Constructs a compile-time format string from a string literal *s*. + + **Example**:: + + // A compile-time error because 'd' is an invalid specifier for strings. + std::string s = fmt::format(FMT_STRING("{:d}"), "foo"); + \endrst + */ +#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::compile_string) + +template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +std::basic_string<Char> vformat( + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args); + +FMT_API std::string vformat(string_view format_str, format_args args); + +template <typename Char> +void vformat_to( + buffer<Char>& buf, basic_string_view<Char> format_str, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args, + detail::locale_ref loc = {}); + +template <typename Char, typename Args, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +inline void vprint_mojibake(std::FILE*, basic_string_view<Char>, const Args&) {} + +FMT_API void vprint_mojibake(std::FILE*, string_view, format_args); +#ifndef _WIN32 +inline void vprint_mojibake(std::FILE*, string_view, format_args) {} +#endif + +FMT_END_DETAIL_NAMESPACE + +/** Formats a string and writes the output to ``out``. */ +// GCC 8 and earlier cannot handle std::back_insert_iterator<Container> with +// vformat_to<ArgFormatter>(...) overload, so SFINAE on iterator type instead. +template <typename OutputIt, typename S, typename Char = char_t<S>, + bool enable = detail::is_output_iterator<OutputIt, Char>::value> +auto vformat_to(OutputIt out, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> typename std::enable_if<enable, OutputIt>::type { + decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out)); + detail::vformat_to(buf, to_string_view(format_str), args); + return detail::get_iterator(buf); +} + +/** + \rst + Formats arguments, writes the result to the output iterator ``out`` and returns + the iterator past the end of the output range. + + **Example**:: + + std::vector<char> out; + fmt::format_to(std::back_inserter(out), "{}", 42); + \endrst + */ +// We cannot use FMT_ENABLE_IF because of a bug in gcc 8.3. +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value> +inline auto format_to(OutputIt out, const S& format_str, Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return vformat_to(out, to_string_view(format_str), vargs); +} + +template <typename OutputIt> struct format_to_n_result { + /** Iterator past the end of the output range. */ + OutputIt out; + /** Total (not truncated) output size. */ + size_t size; +}; + +template <typename OutputIt, typename Char, typename... Args, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)> +inline format_to_n_result<OutputIt> vformat_to_n( + OutputIt out, size_t n, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + detail::iterator_buffer<OutputIt, Char, detail::fixed_buffer_traits> buf(out, + n); + detail::vformat_to(buf, format_str, args); + return {buf.out(), buf.count()}; +} + +/** + \rst + Formats arguments, writes up to ``n`` characters of the result to the output + iterator ``out`` and returns the total output size and the iterator past the + end of the output range. + \endrst + */ +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value> +inline auto format_to_n(OutputIt out, size_t n, const S& format_str, + const Args&... args) -> + typename std::enable_if<enable, format_to_n_result<OutputIt>>::type { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return vformat_to_n(out, n, to_string_view(format_str), vargs); +} + +/** + Returns the number of characters in the output of + ``format(format_str, args...)``. + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline size_t formatted_size(const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + detail::counting_buffer<> buf; + detail::vformat_to(buf, to_string_view(format_str), vargs); + return buf.count(); +} + +template <typename S, typename Char = char_t<S>> +FMT_INLINE std::basic_string<Char> vformat( + const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + return detail::vformat(to_string_view(format_str), args); +} + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + #include <fmt/core.h> + std::string message = fmt::format("The answer is {}", 42); + \endrst +*/ +// Pass char_t as a default template parameter instead of using +// std::basic_string<char_t<S>> to reduce the symbol size. +template <typename S, typename... Args, typename Char = char_t<S>, + FMT_ENABLE_IF(!FMT_COMPILE_TIME_CHECKS || + !std::is_same<Char, char>::value)> +FMT_INLINE std::basic_string<Char> format(const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::vformat(to_string_view(format_str), vargs); +} + +FMT_API void vprint(string_view, format_args); +FMT_API void vprint(std::FILE*, string_view, format_args); + +/** + \rst + Formats ``args`` according to specifications in ``format_str`` and writes the + output to the file ``f``. Strings are assumed to be Unicode-encoded unless the + ``FMT_UNICODE`` macro is set to 0. + + **Example**:: + + fmt::print(stderr, "Don't {}!", "panic"); + \endrst + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline void print(std::FILE* f, const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::is_unicode<Char>() + ? vprint(f, to_string_view(format_str), vargs) + : detail::vprint_mojibake(f, to_string_view(format_str), vargs); +} + +/** + \rst + Formats ``args`` according to specifications in ``format_str`` and writes + the output to ``stdout``. Strings are assumed to be Unicode-encoded unless + the ``FMT_UNICODE`` macro is set to 0. + + **Example**:: + + fmt::print("Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline void print(const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::is_unicode<Char>() + ? vprint(to_string_view(format_str), vargs) + : detail::vprint_mojibake(stdout, to_string_view(format_str), + vargs); +} + +FMT_MODULE_EXPORT_END +FMT_GCC_PRAGMA("GCC pop_options") +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# include "format.h" +#endif +#endif // FMT_CORE_H_ diff --git a/deps/fmt/include/fmt/format-inl.h b/deps/fmt/include/fmt/format-inl.h new file mode 100644 index 0000000000..02a4e7c3af --- /dev/null +++ b/deps/fmt/include/fmt/format-inl.h @@ -0,0 +1,2634 @@ +// Formatting library for C++ - implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_FORMAT_INL_H_ +#define FMT_FORMAT_INL_H_ + +#include <algorithm> +#include <cctype> +#include <climits> +#include <cmath> +#include <cstdarg> +#include <cstring> // std::memmove +#include <cwchar> +#include <exception> + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +# include <locale> +#endif + +#ifdef _WIN32 +# include <io.h> // _isatty +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +FMT_FUNC void assert_fail(const char* file, int line, const char* message) { + // Use unchecked std::fprintf to avoid triggering another assertion when + // writing to stderr fails + std::fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message); + // Chosen instead of std::abort to satisfy Clang in CUDA mode during device + // code pass. + std::terminate(); +} + +#ifndef _MSC_VER +# define FMT_SNPRINTF snprintf +#else // _MSC_VER +inline int fmt_snprintf(char* buffer, size_t size, const char* format, ...) { + va_list args; + va_start(args, format); + int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); + va_end(args); + return result; +} +# define FMT_SNPRINTF fmt_snprintf +#endif // _MSC_VER + +FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT { + // Report error code making sure that the output fits into + // inline_buffer_size to avoid dynamic memory allocation and potential + // bad_alloc. + out.try_resize(0); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + auto abs_value = static_cast<uint32_or_64_or_128_t<int>>(error_code); + if (detail::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += detail::to_unsigned(detail::count_digits(abs_value)); + auto it = buffer_appender<char>(out); + if (message.size() <= inline_buffer_size - error_code_size) + format_to(it, FMT_STRING("{}{}"), message, SEP); + format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code); + FMT_ASSERT(out.size() <= inline_buffer_size, ""); +} + +FMT_FUNC void report_error(format_func func, int error_code, + const char* message) FMT_NOEXCEPT { + memory_buffer full_message; + func(full_message, error_code, message); + // Don't use fwrite_fully because the latter may throw. + if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0) + std::fputc('\n', stderr); +} + +// A wrapper around fwrite that throws on error. +inline void fwrite_fully(const void* ptr, size_t size, size_t count, + FILE* stream) { + size_t written = std::fwrite(ptr, size, count, stream); + if (written < count) FMT_THROW(system_error(errno, "cannot write to file")); +} + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template <typename Locale> +locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { + static_assert(std::is_same<Locale, std::locale>::value, ""); +} + +template <typename Locale> Locale locale_ref::get() const { + static_assert(std::is_same<Locale, std::locale>::value, ""); + return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale(); +} + +template <typename Char> FMT_FUNC std::string grouping_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()).grouping(); +} +template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) + .thousands_sep(); +} +template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) + .decimal_point(); +} +#else +template <typename Char> FMT_FUNC std::string grouping_impl(locale_ref) { + return "\03"; +} +template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref) { + return FMT_STATIC_THOUSANDS_SEPARATOR; +} +template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref) { + return '.'; +} +#endif +} // namespace detail + +#if !FMT_MSC_VER +FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default; +#endif + +FMT_FUNC std::system_error vsystem_error(int error_code, string_view format_str, + format_args args) { + auto ec = std::error_code(error_code, std::generic_category()); + return std::system_error(ec, vformat(format_str, args)); +} + +namespace detail { + +template <> FMT_FUNC int count_digits<4>(detail::fallback_uintptr n) { + // fallback_uintptr is always stored in little endian. + int i = static_cast<int>(sizeof(void*)) - 1; + while (i > 0 && n.value[i] == 0) --i; + auto char_digits = std::numeric_limits<unsigned char>::digits / 4; + return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1; +} + +#if __cplusplus < 201703L +template <typename T> +constexpr const typename basic_data<T>::digit_pair basic_data<T>::digits[]; +template <typename T> constexpr const char basic_data<T>::hex_digits[]; +template <typename T> constexpr const char basic_data<T>::signs[]; +template <typename T> constexpr const unsigned basic_data<T>::prefixes[]; +template <typename T> constexpr const char basic_data<T>::left_padding_shifts[]; +template <typename T> +constexpr const char basic_data<T>::right_padding_shifts[]; +#endif + +template <typename T> struct bits { + static FMT_CONSTEXPR_DECL const int value = + static_cast<int>(sizeof(T) * std::numeric_limits<unsigned char>::digits); +}; + +class fp; +template <int SHIFT = 0> fp normalize(fp value); + +// Lower (upper) boundary is a value half way between a floating-point value +// and its predecessor (successor). Boundaries have the same exponent as the +// value so only significands are stored. +struct boundaries { + uint64_t lower; + uint64_t upper; +}; + +// A handmade floating-point number f * pow(2, e). +class fp { + private: + using significand_type = uint64_t; + + template <typename Float> + using is_supported_float = bool_constant<sizeof(Float) == sizeof(uint64_t) || + sizeof(Float) == sizeof(uint32_t)>; + + public: + significand_type f; + int e; + + // All sizes are in bits. + // Subtract 1 to account for an implicit most significant bit in the + // normalized form. + static FMT_CONSTEXPR_DECL const int double_significand_size = + std::numeric_limits<double>::digits - 1; + static FMT_CONSTEXPR_DECL const uint64_t implicit_bit = + 1ULL << double_significand_size; + static FMT_CONSTEXPR_DECL const int significand_size = + bits<significand_type>::value; + + fp() : f(0), e(0) {} + fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} + + // Constructs fp from an IEEE754 double. It is a template to prevent compile + // errors on platforms where double is not IEEE754. + template <typename Double> explicit fp(Double d) { assign(d); } + + // Assigns d to this and return true iff predecessor is closer than successor. + template <typename Float, FMT_ENABLE_IF(is_supported_float<Float>::value)> + bool assign(Float d) { + // Assume float is in the format [sign][exponent][significand]. + using limits = std::numeric_limits<Float>; + const int float_significand_size = limits::digits - 1; + const int exponent_size = + bits<Float>::value - float_significand_size - 1; // -1 for sign + const uint64_t float_implicit_bit = 1ULL << float_significand_size; + const uint64_t significand_mask = float_implicit_bit - 1; + const uint64_t exponent_mask = (~0ULL >> 1) & ~significand_mask; + const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1; + constexpr bool is_double = sizeof(Float) == sizeof(uint64_t); + auto u = bit_cast<conditional_t<is_double, uint64_t, uint32_t>>(d); + f = u & significand_mask; + int biased_e = + static_cast<int>((u & exponent_mask) >> float_significand_size); + // Predecessor is closer if d is a normalized power of 2 (f == 0) other than + // the smallest normalized number (biased_e > 1). + bool is_predecessor_closer = f == 0 && biased_e > 1; + if (biased_e != 0) + f += float_implicit_bit; + else + biased_e = 1; // Subnormals use biased exponent 1 (min exponent). + e = biased_e - exponent_bias - float_significand_size; + return is_predecessor_closer; + } + + template <typename Float, FMT_ENABLE_IF(!is_supported_float<Float>::value)> + bool assign(Float) { + *this = fp(); + return false; + } +}; + +// Normalizes the value converted from double and multiplied by (1 << SHIFT). +template <int SHIFT> fp normalize(fp value) { + // Handle subnormals. + const auto shifted_implicit_bit = fp::implicit_bit << SHIFT; + while ((value.f & shifted_implicit_bit) == 0) { + value.f <<= 1; + --value.e; + } + // Subtract 1 to account for hidden bit. + const auto offset = + fp::significand_size - fp::double_significand_size - SHIFT - 1; + value.f <<= offset; + value.e -= offset; + return value; +} + +inline bool operator==(fp x, fp y) { return x.f == y.f && x.e == y.e; } + +// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking. +inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { +#if FMT_USE_INT128 + auto product = static_cast<__uint128_t>(lhs) * rhs; + auto f = static_cast<uint64_t>(product >> 64); + return (static_cast<uint64_t>(product) & (1ULL << 63)) != 0 ? f + 1 : f; +#else + // Multiply 32-bit parts of significands. + uint64_t mask = (1ULL << 32) - 1; + uint64_t a = lhs >> 32, b = lhs & mask; + uint64_t c = rhs >> 32, d = rhs & mask; + uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; + // Compute mid 64-bit of result and round. + uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); + return ac + (ad >> 32) + (bc >> 32) + (mid >> 32); +#endif +} + +inline fp operator*(fp x, fp y) { return {multiply(x.f, y.f), x.e + y.e + 64}; } + +// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its +// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`. +inline fp get_cached_power(int min_exponent, int& pow10_exponent) { + // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. + // These are generated by support/compute-powers.py. + static constexpr const uint64_t pow10_significands[] = { + 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, + 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, + 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, + 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, + 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, + 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, + 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, + 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, + 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, + 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, + 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, + 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, + 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, + 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, + 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, + 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, + 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, + 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, + 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, + 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, + 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, + 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, + 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, + 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, + 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, + 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, + 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, + 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, + 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, + }; + + // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding + // to significands above. + static constexpr const int16_t pow10_exponents[] = { + -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, + -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, + -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, + -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, + -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, + 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, + 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, + 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; + + const int shift = 32; + const auto significand = static_cast<int64_t>(data::log10_2_significand); + int index = static_cast<int>( + ((min_exponent + fp::significand_size - 1) * (significand >> shift) + + ((int64_t(1) << shift) - 1)) // ceil + >> 32 // arithmetic shift + ); + // Decimal exponent of the first (smallest) cached power of 10. + const int first_dec_exp = -348; + // Difference between 2 consecutive decimal exponents in cached powers of 10. + const int dec_exp_step = 8; + index = (index - first_dec_exp - 1) / dec_exp_step + 1; + pow10_exponent = first_dec_exp + index * dec_exp_step; + return {pow10_significands[index], pow10_exponents[index]}; +} + +// A simple accumulator to hold the sums of terms in bigint::square if uint128_t +// is not available. +struct accumulator { + uint64_t lower; + uint64_t upper; + + accumulator() : lower(0), upper(0) {} + explicit operator uint32_t() const { return static_cast<uint32_t>(lower); } + + void operator+=(uint64_t n) { + lower += n; + if (lower < n) ++upper; + } + void operator>>=(int shift) { + FMT_ASSERT(shift == 32, ""); + (void)shift; + lower = (upper << 32) | (lower >> 32); + upper >>= 32; + } +}; + +class bigint { + private: + // A bigint is stored as an array of bigits (big digits), with bigit at index + // 0 being the least significant one. + using bigit = uint32_t; + using double_bigit = uint64_t; + enum { bigits_capacity = 32 }; + basic_memory_buffer<bigit, bigits_capacity> bigits_; + int exp_; + + bigit operator[](int index) const { return bigits_[to_unsigned(index)]; } + bigit& operator[](int index) { return bigits_[to_unsigned(index)]; } + + static FMT_CONSTEXPR_DECL const int bigit_bits = bits<bigit>::value; + + friend struct formatter<bigint>; + + void subtract_bigits(int index, bigit other, bigit& borrow) { + auto result = static_cast<double_bigit>((*this)[index]) - other - borrow; + (*this)[index] = static_cast<bigit>(result); + borrow = static_cast<bigit>(result >> (bigit_bits * 2 - 1)); + } + + void remove_leading_zeros() { + int num_bigits = static_cast<int>(bigits_.size()) - 1; + while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits; + bigits_.resize(to_unsigned(num_bigits + 1)); + } + + // Computes *this -= other assuming aligned bigints and *this >= other. + void subtract_aligned(const bigint& other) { + FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints"); + FMT_ASSERT(compare(*this, other) >= 0, ""); + bigit borrow = 0; + int i = other.exp_ - exp_; + for (size_t j = 0, n = other.bigits_.size(); j != n; ++i, ++j) + subtract_bigits(i, other.bigits_[j], borrow); + while (borrow > 0) subtract_bigits(i, 0, borrow); + remove_leading_zeros(); + } + + void multiply(uint32_t value) { + const double_bigit wide_value = value; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * wide_value + carry; + bigits_[i] = static_cast<bigit>(result); + carry = static_cast<bigit>(result >> bigit_bits); + } + if (carry != 0) bigits_.push_back(carry); + } + + void multiply(uint64_t value) { + const bigit mask = ~bigit(0); + const double_bigit lower = value & mask; + const double_bigit upper = value >> bigit_bits; + double_bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * lower + (carry & mask); + carry = + bigits_[i] * upper + (result >> bigit_bits) + (carry >> bigit_bits); + bigits_[i] = static_cast<bigit>(result); + } + while (carry != 0) { + bigits_.push_back(carry & mask); + carry >>= bigit_bits; + } + } + + public: + bigint() : exp_(0) {} + explicit bigint(uint64_t n) { assign(n); } + ~bigint() { FMT_ASSERT(bigits_.capacity() <= bigits_capacity, ""); } + + bigint(const bigint&) = delete; + void operator=(const bigint&) = delete; + + void assign(const bigint& other) { + auto size = other.bigits_.size(); + bigits_.resize(size); + auto data = other.bigits_.data(); + std::copy(data, data + size, make_checked(bigits_.data(), size)); + exp_ = other.exp_; + } + + void assign(uint64_t n) { + size_t num_bigits = 0; + do { + bigits_[num_bigits++] = n & ~bigit(0); + n >>= bigit_bits; + } while (n != 0); + bigits_.resize(num_bigits); + exp_ = 0; + } + + int num_bigits() const { return static_cast<int>(bigits_.size()) + exp_; } + + FMT_NOINLINE bigint& operator<<=(int shift) { + FMT_ASSERT(shift >= 0, ""); + exp_ += shift / bigit_bits; + shift %= bigit_bits; + if (shift == 0) return *this; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + bigit c = bigits_[i] >> (bigit_bits - shift); + bigits_[i] = (bigits_[i] << shift) + carry; + carry = c; + } + if (carry != 0) bigits_.push_back(carry); + return *this; + } + + template <typename Int> bigint& operator*=(Int value) { + FMT_ASSERT(value > 0, ""); + multiply(uint32_or_64_or_128_t<Int>(value)); + return *this; + } + + friend int compare(const bigint& lhs, const bigint& rhs) { + int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits(); + if (num_lhs_bigits != num_rhs_bigits) + return num_lhs_bigits > num_rhs_bigits ? 1 : -1; + int i = static_cast<int>(lhs.bigits_.size()) - 1; + int j = static_cast<int>(rhs.bigits_.size()) - 1; + int end = i - j; + if (end < 0) end = 0; + for (; i >= end; --i, --j) { + bigit lhs_bigit = lhs[i], rhs_bigit = rhs[j]; + if (lhs_bigit != rhs_bigit) return lhs_bigit > rhs_bigit ? 1 : -1; + } + if (i != j) return i > j ? 1 : -1; + return 0; + } + + // Returns compare(lhs1 + lhs2, rhs). + friend int add_compare(const bigint& lhs1, const bigint& lhs2, + const bigint& rhs) { + int max_lhs_bigits = (std::max)(lhs1.num_bigits(), lhs2.num_bigits()); + int num_rhs_bigits = rhs.num_bigits(); + if (max_lhs_bigits + 1 < num_rhs_bigits) return -1; + if (max_lhs_bigits > num_rhs_bigits) return 1; + auto get_bigit = [](const bigint& n, int i) -> bigit { + return i >= n.exp_ && i < n.num_bigits() ? n[i - n.exp_] : 0; + }; + double_bigit borrow = 0; + int min_exp = (std::min)((std::min)(lhs1.exp_, lhs2.exp_), rhs.exp_); + for (int i = num_rhs_bigits - 1; i >= min_exp; --i) { + double_bigit sum = + static_cast<double_bigit>(get_bigit(lhs1, i)) + get_bigit(lhs2, i); + bigit rhs_bigit = get_bigit(rhs, i); + if (sum > rhs_bigit + borrow) return 1; + borrow = rhs_bigit + borrow - sum; + if (borrow > 1) return -1; + borrow <<= bigit_bits; + } + return borrow != 0 ? -1 : 0; + } + + // Assigns pow(10, exp) to this bigint. + void assign_pow10(int exp) { + FMT_ASSERT(exp >= 0, ""); + if (exp == 0) return assign(1); + // Find the top bit. + int bitmask = 1; + while (exp >= bitmask) bitmask <<= 1; + bitmask >>= 1; + // pow(10, exp) = pow(5, exp) * pow(2, exp). First compute pow(5, exp) by + // repeated squaring and multiplication. + assign(5); + bitmask >>= 1; + while (bitmask != 0) { + square(); + if ((exp & bitmask) != 0) *this *= 5; + bitmask >>= 1; + } + *this <<= exp; // Multiply by pow(2, exp) by shifting. + } + + void square() { + int num_bigits = static_cast<int>(bigits_.size()); + int num_result_bigits = 2 * num_bigits; + basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_)); + bigits_.resize(to_unsigned(num_result_bigits)); + using accumulator_t = conditional_t<FMT_USE_INT128, uint128_t, accumulator>; + auto sum = accumulator_t(); + for (int bigit_index = 0; bigit_index < num_bigits; ++bigit_index) { + // Compute bigit at position bigit_index of the result by adding + // cross-product terms n[i] * n[j] such that i + j == bigit_index. + for (int i = 0, j = bigit_index; j >= 0; ++i, --j) { + // Most terms are multiplied twice which can be optimized in the future. + sum += static_cast<double_bigit>(n[i]) * n[j]; + } + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= bits<bigit>::value; // Compute the carry. + } + // Do the same for the top half. + for (int bigit_index = num_bigits; bigit_index < num_result_bigits; + ++bigit_index) { + for (int j = num_bigits - 1, i = bigit_index - j; i < num_bigits;) + sum += static_cast<double_bigit>(n[i++]) * n[j--]; + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= bits<bigit>::value; + } + --num_result_bigits; + remove_leading_zeros(); + exp_ *= 2; + } + + // If this bigint has a bigger exponent than other, adds trailing zero to make + // exponents equal. This simplifies some operations such as subtraction. + void align(const bigint& other) { + int exp_difference = exp_ - other.exp_; + if (exp_difference <= 0) return; + int num_bigits = static_cast<int>(bigits_.size()); + bigits_.resize(to_unsigned(num_bigits + exp_difference)); + for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j) + bigits_[j] = bigits_[i]; + std::uninitialized_fill_n(bigits_.data(), exp_difference, 0); + exp_ -= exp_difference; + } + + // Divides this bignum by divisor, assigning the remainder to this and + // returning the quotient. + int divmod_assign(const bigint& divisor) { + FMT_ASSERT(this != &divisor, ""); + if (compare(*this, divisor) < 0) return 0; + FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, ""); + align(divisor); + int quotient = 0; + do { + subtract_aligned(divisor); + ++quotient; + } while (compare(*this, divisor) >= 0); + return quotient; + } +}; + +enum class round_direction { unknown, up, down }; + +// Given the divisor (normally a power of 10), the remainder = v % divisor for +// some number v and the error, returns whether v should be rounded up, down, or +// whether the rounding direction can't be determined due to error. +// error should be less than divisor / 2. +inline round_direction get_round_direction(uint64_t divisor, uint64_t remainder, + uint64_t error) { + FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow. + FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow. + FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow. + // Round down if (remainder + error) * 2 <= divisor. + if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2) + return round_direction::down; + // Round up if (remainder - error) * 2 >= divisor. + if (remainder >= error && + remainder - error >= divisor - (remainder - error)) { + return round_direction::up; + } + return round_direction::unknown; +} + +namespace digits { +enum result { + more, // Generate more digits. + done, // Done generating digits. + error // Digit generation cancelled due to an error. +}; +} + +inline uint64_t power_of_10_64(int exp) { + static constexpr const uint64_t data[] = {1, FMT_POWERS_OF_10(1), + FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + return data[exp]; +} + +// Generates output using the Grisu digit-gen algorithm. +// error: the size of the region (lower, upper) outside of which numbers +// definitely do not round to value (Delta in Grisu3). +template <typename Handler> +FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, + int& exp, Handler& handler) { + const fp one(1ULL << -value.e, value.e); + // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be + // zero because it contains a product of two 64-bit numbers with MSB set (due + // to normalization) - 1, shifted right by at most 60 bits. + auto integral = static_cast<uint32_t>(value.f >> -one.e); + FMT_ASSERT(integral != 0, ""); + FMT_ASSERT(integral == value.f >> -one.e, ""); + // The fractional part of scaled value (p2 in Grisu) c = value % one. + uint64_t fractional = value.f & (one.f - 1); + exp = count_digits(integral); // kappa in Grisu. + // Divide by 10 to prevent overflow. + auto result = handler.on_start(power_of_10_64(exp - 1) << -one.e, + value.f / 10, error * 10, exp); + if (result != digits::more) return result; + // Generate digits for the integral part. This can produce up to 10 digits. + do { + uint32_t digit = 0; + auto divmod_integral = [&](uint32_t divisor) { + digit = integral / divisor; + integral %= divisor; + }; + // This optimization by Milo Yip reduces the number of integer divisions by + // one per iteration. + switch (exp) { + case 10: + divmod_integral(1000000000); + break; + case 9: + divmod_integral(100000000); + break; + case 8: + divmod_integral(10000000); + break; + case 7: + divmod_integral(1000000); + break; + case 6: + divmod_integral(100000); + break; + case 5: + divmod_integral(10000); + break; + case 4: + divmod_integral(1000); + break; + case 3: + divmod_integral(100); + break; + case 2: + divmod_integral(10); + break; + case 1: + digit = integral; + integral = 0; + break; + default: + FMT_ASSERT(false, "invalid number of digits"); + } + --exp; + auto remainder = (static_cast<uint64_t>(integral) << -one.e) + fractional; + result = handler.on_digit(static_cast<char>('0' + digit), + power_of_10_64(exp) << -one.e, remainder, error, + exp, true); + if (result != digits::more) return result; + } while (exp > 0); + // Generate digits for the fractional part. + for (;;) { + fractional *= 10; + error *= 10; + char digit = static_cast<char>('0' + (fractional >> -one.e)); + fractional &= one.f - 1; + --exp; + result = handler.on_digit(digit, one.f, fractional, error, exp, false); + if (result != digits::more) return result; + } +} + +// The fixed precision digit handler. +struct fixed_handler { + char* buf; + int size; + int precision; + int exp10; + bool fixed; + + digits::result on_start(uint64_t divisor, uint64_t remainder, uint64_t error, + int& exp) { + // Non-fixed formats require at least one digit and no precision adjustment. + if (!fixed) return digits::more; + // Adjust fixed precision by exponent because it is relative to decimal + // point. + precision += exp + exp10; + // Check if precision is satisfied just by leading zeros, e.g. + // format("{:.2f}", 0.001) gives "0.00" without generating any digits. + if (precision > 0) return digits::more; + if (precision < 0) return digits::done; + auto dir = get_round_direction(divisor, remainder, error); + if (dir == round_direction::unknown) return digits::error; + buf[size++] = dir == round_direction::up ? '1' : '0'; + return digits::done; + } + + digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder, + uint64_t error, int, bool integral) { + FMT_ASSERT(remainder < divisor, ""); + buf[size++] = digit; + if (!integral && error >= remainder) return digits::error; + if (size < precision) return digits::more; + if (!integral) { + // Check if error * 2 < divisor with overflow prevention. + // The check is not needed for the integral part because error = 1 + // and divisor > (1 << 32) there. + if (error >= divisor || error >= divisor - error) return digits::error; + } else { + FMT_ASSERT(error == 1 && divisor > 2, ""); + } + auto dir = get_round_direction(divisor, remainder, error); + if (dir != round_direction::up) + return dir == round_direction::down ? digits::done : digits::error; + ++buf[size - 1]; + for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] > '9') { + buf[0] = '1'; + if (fixed) + buf[size++] = '0'; + else + ++exp10; + } + return digits::done; + } +}; + +// A 128-bit integer type used internally, +struct uint128_wrapper { + uint128_wrapper() = default; + +#if FMT_USE_INT128 + uint128_t internal_; + + constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT + : internal_{static_cast<uint128_t>(low) | + (static_cast<uint128_t>(high) << 64)} {} + + constexpr uint128_wrapper(uint128_t u) : internal_{u} {} + + constexpr uint64_t high() const FMT_NOEXCEPT { + return uint64_t(internal_ >> 64); + } + constexpr uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { + internal_ += n; + return *this; + } +#else + uint64_t high_; + uint64_t low_; + + constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT + : high_{high}, + low_{low} {} + + constexpr uint64_t high() const FMT_NOEXCEPT { return high_; } + constexpr uint64_t low() const FMT_NOEXCEPT { return low_; } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { +# if defined(_MSC_VER) && defined(_M_X64) + unsigned char carry = _addcarry_u64(0, low_, n, &low_); + _addcarry_u64(carry, high_, 0, &high_); + return *this; +# else + uint64_t sum = low_ + n; + high_ += (sum < low_ ? 1 : 0); + low_ = sum; + return *this; +# endif + } +#endif +}; + +// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox. +namespace dragonbox { +// Computes 128-bit result of multiplication of two 64-bit unsigned integers. +inline uint128_wrapper umul128(uint64_t x, uint64_t y) FMT_NOEXCEPT { +#if FMT_USE_INT128 + return static_cast<uint128_t>(x) * static_cast<uint128_t>(y); +#elif defined(_MSC_VER) && defined(_M_X64) + uint128_wrapper result; + result.low_ = _umul128(x, y, &result.high_); + return result; +#else + const uint64_t mask = (uint64_t(1) << 32) - uint64_t(1); + + uint64_t a = x >> 32; + uint64_t b = x & mask; + uint64_t c = y >> 32; + uint64_t d = y & mask; + + uint64_t ac = a * c; + uint64_t bc = b * c; + uint64_t ad = a * d; + uint64_t bd = b * d; + + uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask); + + return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32), + (intermediate << 32) + (bd & mask)}; +#endif +} + +// Computes upper 64 bits of multiplication of two 64-bit unsigned integers. +inline uint64_t umul128_upper64(uint64_t x, uint64_t y) FMT_NOEXCEPT { +#if FMT_USE_INT128 + auto p = static_cast<uint128_t>(x) * static_cast<uint128_t>(y); + return static_cast<uint64_t>(p >> 64); +#elif defined(_MSC_VER) && defined(_M_X64) + return __umulh(x, y); +#else + return umul128(x, y).high(); +#endif +} + +// Computes upper 64 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT { + uint128_wrapper g0 = umul128(x, y.high()); + g0 += umul128_upper64(x, y.low()); + return g0.high(); +} + +// Computes upper 32 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint32_t umul96_upper32(uint32_t x, uint64_t y) FMT_NOEXCEPT { + return static_cast<uint32_t>(umul128_upper64(x, y)); +} + +// Computes middle 64 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT { + uint64_t g01 = x * y.high(); + uint64_t g10 = umul128_upper64(x, y.low()); + return g01 + g10; +} + +// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint64_t umul96_lower64(uint32_t x, uint64_t y) FMT_NOEXCEPT { + return x * y; +} + +// Computes floor(log10(pow(2, e))) for e in [-1700, 1700] using the method from +// https://fmt.dev/papers/Grisu-Exact.pdf#page=5, section 3.4. +inline int floor_log10_pow2(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); + const int shift = 22; + return (e * static_cast<int>(data::log10_2_significand >> (64 - shift))) >> + shift; +} + +// Various fast log computations. +inline int floor_log2_pow10(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent"); + const uint64_t log2_10_integer_part = 3; + const uint64_t log2_10_fractional_digits = 0x5269e12f346e2bf9; + const int shift_amount = 19; + return (e * static_cast<int>( + (log2_10_integer_part << shift_amount) | + (log2_10_fractional_digits >> (64 - shift_amount)))) >> + shift_amount; +} +inline int floor_log10_pow2_minus_log10_4_over_3(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); + const uint64_t log10_4_over_3_fractional_digits = 0x1ffbfc2bbc780375; + const int shift_amount = 22; + return (e * static_cast<int>(data::log10_2_significand >> + (64 - shift_amount)) - + static_cast<int>(log10_4_over_3_fractional_digits >> + (64 - shift_amount))) >> + shift_amount; +} + +// Returns true iff x is divisible by pow(2, exp). +inline bool divisible_by_power_of_2(uint32_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp >= 1, ""); + FMT_ASSERT(x != 0, ""); +#ifdef FMT_BUILTIN_CTZ + return FMT_BUILTIN_CTZ(x) >= exp; +#else + return exp < num_bits<uint32_t>() && x == ((x >> exp) << exp); +#endif +} +inline bool divisible_by_power_of_2(uint64_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp >= 1, ""); + FMT_ASSERT(x != 0, ""); +#ifdef FMT_BUILTIN_CTZLL + return FMT_BUILTIN_CTZLL(x) >= exp; +#else + return exp < num_bits<uint64_t>() && x == ((x >> exp) << exp); +#endif +} + +// Table entry type for divisibility test. +template <typename T> struct divtest_table_entry { + T mod_inv; + T max_quotient; +}; + +// Returns true iff x is divisible by pow(5, exp). +inline bool divisible_by_power_of_5(uint32_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp <= 10, "too large exponent"); + static constexpr const divtest_table_entry<uint32_t> divtest_table[] = { + {0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333}, + {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba}, + {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5}, + {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf}, + {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897}, + {0x3ed61f49, 0x000001b7}}; + return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient; +} +inline bool divisible_by_power_of_5(uint64_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp <= 23, "too large exponent"); + static constexpr const divtest_table_entry<uint64_t> divtest_table[] = { + {0x0000000000000001, 0xffffffffffffffff}, + {0xcccccccccccccccd, 0x3333333333333333}, + {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70}, + {0x1cac083126e978d5, 0x020c49ba5e353f7c}, + {0xd288ce703afb7e91, 0x0068db8bac710cb2}, + {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0}, + {0x790fb65668c26139, 0x000431bde82d7b63}, + {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a}, + {0xc767074b22e90e21, 0x00002af31dc46118}, + {0x8e47ce423a2e9c6d, 0x0000089705f4136b}, + {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b}, + {0x0fee64690c913975, 0x00000057f5ff85e5}, + {0x3662e0e1cf503eb1, 0x000000119799812d}, + {0xa47a2cf9f6433fbd, 0x0000000384b84d09}, + {0x54186f653140a659, 0x00000000b424dc35}, + {0x7738164770402145, 0x0000000024075f3d}, + {0xe4a4d1417cd9a041, 0x000000000734aca5}, + {0xc75429d9e5c5200d, 0x000000000170ef54}, + {0xc1773b91fac10669, 0x000000000049c977}, + {0x26b172506559ce15, 0x00000000000ec1e4}, + {0xd489e3a9addec2d1, 0x000000000002f394}, + {0x90e860bb892c8d5d, 0x000000000000971d}, + {0x502e79bf1b6f4f79, 0x0000000000001e39}, + {0xdcd618596be30fe5, 0x000000000000060b}}; + return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient; +} + +// Replaces n by floor(n / pow(5, N)) returning true if and only if n is +// divisible by pow(5, N). +// Precondition: n <= 2 * pow(5, N + 1). +template <int N> +bool check_divisibility_and_divide_by_pow5(uint32_t& n) FMT_NOEXCEPT { + static constexpr struct { + uint32_t magic_number; + int bits_for_comparison; + uint32_t threshold; + int shift_amount; + } infos[] = {{0xcccd, 16, 0x3333, 18}, {0xa429, 8, 0x0a, 20}}; + constexpr auto info = infos[N - 1]; + n *= info.magic_number; + const uint32_t comparison_mask = (1u << info.bits_for_comparison) - 1; + bool result = (n & comparison_mask) <= info.threshold; + n >>= info.shift_amount; + return result; +} + +// Computes floor(n / pow(10, N)) for small n and N. +// Precondition: n <= pow(10, N + 1). +template <int N> uint32_t small_division_by_pow10(uint32_t n) FMT_NOEXCEPT { + static constexpr struct { + uint32_t magic_number; + int shift_amount; + uint32_t divisor_times_10; + } infos[] = {{0xcccd, 19, 100}, {0xa3d8, 22, 1000}}; + constexpr auto info = infos[N - 1]; + FMT_ASSERT(n <= info.divisor_times_10, "n is too large"); + return n * info.magic_number >> info.shift_amount; +} + +// Computes floor(n / 10^(kappa + 1)) (float) +inline uint32_t divide_by_10_to_kappa_plus_1(uint32_t n) FMT_NOEXCEPT { + return n / float_info<float>::big_divisor; +} +// Computes floor(n / 10^(kappa + 1)) (double) +inline uint64_t divide_by_10_to_kappa_plus_1(uint64_t n) FMT_NOEXCEPT { + return umul128_upper64(n, 0x83126e978d4fdf3c) >> 9; +} + +// Various subroutines using pow10 cache +template <class T> struct cache_accessor; + +template <> struct cache_accessor<float> { + using carrier_uint = float_info<float>::carrier_uint; + using cache_entry_type = uint64_t; + + static uint64_t get_cached_power(int k) FMT_NOEXCEPT { + FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k, + "k is out of range"); + constexpr const uint64_t pow10_significands[] = { + 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, + 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, + 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, + 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, + 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, + 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, + 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, + 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, + 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, + 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, + 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, + 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, + 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, + 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, + 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, + 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, + 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, + 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, + 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, + 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984, + 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296, + 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6, + 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20, + 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd, + 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719, + 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e}; + return pow10_significands[k - float_info<float>::min_k]; + } + + static carrier_uint compute_mul(carrier_uint u, + const cache_entry_type& cache) FMT_NOEXCEPT { + return umul96_upper32(u, cache); + } + + static uint32_t compute_delta(const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + return static_cast<uint32_t>(cache >> (64 - 1 - beta_minus_1)); + } + + static bool compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + FMT_ASSERT(beta_minus_1 >= 1, ""); + FMT_ASSERT(beta_minus_1 < 64, ""); + + return ((umul96_lower64(two_f, cache) >> (64 - beta_minus_1)) & 1) != 0; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return static_cast<carrier_uint>( + (cache - (cache >> (float_info<float>::significand_bits + 2))) >> + (64 - float_info<float>::significand_bits - 1 - beta_minus_1)); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return static_cast<carrier_uint>( + (cache + (cache >> (float_info<float>::significand_bits + 1))) >> + (64 - float_info<float>::significand_bits - 1 - beta_minus_1)); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (static_cast<carrier_uint>( + cache >> + (64 - float_info<float>::significand_bits - 2 - beta_minus_1)) + + 1) / + 2; + } +}; + +template <> struct cache_accessor<double> { + using carrier_uint = float_info<double>::carrier_uint; + using cache_entry_type = uint128_wrapper; + + static uint128_wrapper get_cached_power(int k) FMT_NOEXCEPT { + FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k, + "k is out of range"); + + static constexpr const uint128_wrapper pow10_significands[] = { +#if FMT_USE_FULL_CACHE_DRAGONBOX + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0x9faacf3df73609b1, 0x77b191618c54e9ad}, + {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, + {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, + {0x9becce62836ac577, 0x4ee367f9430aec33}, + {0xc2e801fb244576d5, 0x229c41f793cda740}, + {0xf3a20279ed56d48a, 0x6b43527578c11110}, + {0x9845418c345644d6, 0x830a13896b78aaaa}, + {0xbe5691ef416bd60c, 0x23cc986bc656d554}, + {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, + {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, + {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, + {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, + {0x91376c36d99995be, 0x23100809b9c21fa2}, + {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, + {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, + {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, + {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, + {0xdd95317f31c7fa1d, 0x40405643d711d584}, + {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, + {0xad1c8eab5ee43b66, 0xda3243650005eed0}, + {0xd863b256369d4a40, 0x90bed43e40076a83}, + {0x873e4f75e2224e68, 0x5a7744a6e804a292}, + {0xa90de3535aaae202, 0x711515d0a205cb37}, + {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, + {0x8412d9991ed58091, 0xe858790afe9486c3}, + {0xa5178fff668ae0b6, 0x626e974dbe39a873}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, + {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, + {0xc987434744ac874e, 0xa327ffb266b56221}, + {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, + {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, + {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, + {0xf6019da07f549b2b, 0x7e2a53a146606a49}, + {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, + {0xc0314325637a1939, 0xfa911155fefb5309}, + {0xf03d93eebc589f88, 0x793555ab7eba27cb}, + {0x96267c7535b763b5, 0x4bc1558b2f3458df}, + {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, + {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, + {0x92a1958a7675175f, 0x0bfacd89ec191eca}, + {0xb749faed14125d36, 0xcef980ec671f667c}, + {0xe51c79a85916f484, 0x82b7e12780e7401b}, + {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, + {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, + {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, + {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1}, + {0xaecc49914078536d, 0x58fae9f773886e19}, + {0xda7f5bf590966848, 0xaf39a475506a899f}, + {0x888f99797a5e012d, 0x6d8406c952429604}, + {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84}, + {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65}, + {0x855c3be0a17fcd26, 0x5cf2eea09a550680}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0xd0601d8efc57b08b, 0xf13b94daf124da27}, + {0x823c12795db6ce57, 0x76c53d08d6b70859}, + {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f}, + {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a}, + {0xfe5d54150b090b02, 0xd3f93b35435d7c4d}, + {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0}, + {0xc6b8e9b0709f109a, 0x359ab6419ca1091c}, + {0xf867241c8cc6d4c0, 0xc30163d203c94b63}, + {0x9b407691d7fc44f8, 0x79e0de63425dcf1e}, + {0xc21094364dfb5636, 0x985915fc12f542e5}, + {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e}, + {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43}, + {0xbd8430bd08277231, 0x50c6ff782a838354}, + {0xece53cec4a314ebd, 0xa4f8bf5635246429}, + {0x940f4613ae5ed136, 0x871b7795e136be9a}, + {0xb913179899f68584, 0x28e2557b59846e40}, + {0xe757dd7ec07426e5, 0x331aeada2fe589d0}, + {0x9096ea6f3848984f, 0x3ff0d2c85def7622}, + {0xb4bca50b065abe63, 0x0fed077a756b53aa}, + {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895}, + {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d}, + {0xb080392cc4349dec, 0xbd8d794d96aacfb4}, + {0xdca04777f541c567, 0xecf0d7a0fc5583a1}, + {0x89e42caaf9491b60, 0xf41686c49db57245}, + {0xac5d37d5b79b6239, 0x311c2875c522ced6}, + {0xd77485cb25823ac7, 0x7d633293366b828c}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xa8530886b54dbdeb, 0xd9f57f830283fdfd}, + {0xd267caa862a12d66, 0xd072df63c324fd7c}, + {0x8380dea93da4bc60, 0x4247cb9e59f71e6e}, + {0xa46116538d0deb78, 0x52d9be85f074e609}, + {0xcd795be870516656, 0x67902e276c921f8c}, + {0x806bd9714632dff6, 0x00ba1cd8a3db53b7}, + {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5}, + {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce}, + {0xfad2a4b13d1b5d6c, 0x796b805720085f82}, + {0x9cc3a6eec6311a63, 0xcbe3303674053bb1}, + {0xc3f490aa77bd60fc, 0xbedbfc4411068a9d}, + {0xf4f1b4d515acb93b, 0xee92fb5515482d45}, + {0x991711052d8bf3c5, 0x751bdd152d4d1c4b}, + {0xbf5cd54678eef0b6, 0xd262d45a78a0635e}, + {0xef340a98172aace4, 0x86fb897116c87c35}, + {0x9580869f0e7aac0e, 0xd45d35e6ae3d4da1}, + {0xbae0a846d2195712, 0x8974836059cca10a}, + {0xe998d258869facd7, 0x2bd1a438703fc94c}, + {0x91ff83775423cc06, 0x7b6306a34627ddd0}, + {0xb67f6455292cbf08, 0x1a3bc84c17b1d543}, + {0xe41f3d6a7377eeca, 0x20caba5f1d9e4a94}, + {0x8e938662882af53e, 0x547eb47b7282ee9d}, + {0xb23867fb2a35b28d, 0xe99e619a4f23aa44}, + {0xdec681f9f4c31f31, 0x6405fa00e2ec94d5}, + {0x8b3c113c38f9f37e, 0xde83bc408dd3dd05}, + {0xae0b158b4738705e, 0x9624ab50b148d446}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0x87f8a8d4cfa417c9, 0xe54ca5d70a80e5d7}, + {0xa9f6d30a038d1dbc, 0x5e9fcf4ccd211f4d}, + {0xd47487cc8470652b, 0x7647c32000696720}, + {0x84c8d4dfd2c63f3b, 0x29ecd9f40041e074}, + {0xa5fb0a17c777cf09, 0xf468107100525891}, + {0xcf79cc9db955c2cc, 0x7182148d4066eeb5}, + {0x81ac1fe293d599bf, 0xc6f14cd848405531}, + {0xa21727db38cb002f, 0xb8ada00e5a506a7d}, + {0xca9cf1d206fdc03b, 0xa6d90811f0e4851d}, + {0xfd442e4688bd304a, 0x908f4a166d1da664}, + {0x9e4a9cec15763e2e, 0x9a598e4e043287ff}, + {0xc5dd44271ad3cdba, 0x40eff1e1853f29fe}, + {0xf7549530e188c128, 0xd12bee59e68ef47d}, + {0x9a94dd3e8cf578b9, 0x82bb74f8301958cf}, + {0xc13a148e3032d6e7, 0xe36a52363c1faf02}, + {0xf18899b1bc3f8ca1, 0xdc44e6c3cb279ac2}, + {0x96f5600f15a7b7e5, 0x29ab103a5ef8c0ba}, + {0xbcb2b812db11a5de, 0x7415d448f6b6f0e8}, + {0xebdf661791d60f56, 0x111b495b3464ad22}, + {0x936b9fcebb25c995, 0xcab10dd900beec35}, + {0xb84687c269ef3bfb, 0x3d5d514f40eea743}, + {0xe65829b3046b0afa, 0x0cb4a5a3112a5113}, + {0x8ff71a0fe2c2e6dc, 0x47f0e785eaba72ac}, + {0xb3f4e093db73a093, 0x59ed216765690f57}, + {0xe0f218b8d25088b8, 0x306869c13ec3532d}, + {0x8c974f7383725573, 0x1e414218c73a13fc}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0xdbac6c247d62a583, 0xdf45f746b74abf3a}, + {0x894bc396ce5da772, 0x6b8bba8c328eb784}, + {0xab9eb47c81f5114f, 0x066ea92f3f326565}, + {0xd686619ba27255a2, 0xc80a537b0efefebe}, + {0x8613fd0145877585, 0xbd06742ce95f5f37}, + {0xa798fc4196e952e7, 0x2c48113823b73705}, + {0xd17f3b51fca3a7a0, 0xf75a15862ca504c6}, + {0x82ef85133de648c4, 0x9a984d73dbe722fc}, + {0xa3ab66580d5fdaf5, 0xc13e60d0d2e0ebbb}, + {0xcc963fee10b7d1b3, 0x318df905079926a9}, + {0xffbbcfe994e5c61f, 0xfdf17746497f7053}, + {0x9fd561f1fd0f9bd3, 0xfeb6ea8bedefa634}, + {0xc7caba6e7c5382c8, 0xfe64a52ee96b8fc1}, + {0xf9bd690a1b68637b, 0x3dfdce7aa3c673b1}, + {0x9c1661a651213e2d, 0x06bea10ca65c084f}, + {0xc31bfa0fe5698db8, 0x486e494fcff30a63}, + {0xf3e2f893dec3f126, 0x5a89dba3c3efccfb}, + {0x986ddb5c6b3a76b7, 0xf89629465a75e01d}, + {0xbe89523386091465, 0xf6bbb397f1135824}, + {0xee2ba6c0678b597f, 0x746aa07ded582e2d}, + {0x94db483840b717ef, 0xa8c2a44eb4571cdd}, + {0xba121a4650e4ddeb, 0x92f34d62616ce414}, + {0xe896a0d7e51e1566, 0x77b020baf9c81d18}, + {0x915e2486ef32cd60, 0x0ace1474dc1d122f}, + {0xb5b5ada8aaff80b8, 0x0d819992132456bb}, + {0xe3231912d5bf60e6, 0x10e1fff697ed6c6a}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xb1736b96b6fd83b3, 0xbd308ff8a6b17cb3}, + {0xddd0467c64bce4a0, 0xac7cb3f6d05ddbdf}, + {0x8aa22c0dbef60ee4, 0x6bcdf07a423aa96c}, + {0xad4ab7112eb3929d, 0x86c16c98d2c953c7}, + {0xd89d64d57a607744, 0xe871c7bf077ba8b8}, + {0x87625f056c7c4a8b, 0x11471cd764ad4973}, + {0xa93af6c6c79b5d2d, 0xd598e40d3dd89bd0}, + {0xd389b47879823479, 0x4aff1d108d4ec2c4}, + {0x843610cb4bf160cb, 0xcedf722a585139bb}, + {0xa54394fe1eedb8fe, 0xc2974eb4ee658829}, + {0xce947a3da6a9273e, 0x733d226229feea33}, + {0x811ccc668829b887, 0x0806357d5a3f5260}, + {0xa163ff802a3426a8, 0xca07c2dcb0cf26f8}, + {0xc9bcff6034c13052, 0xfc89b393dd02f0b6}, + {0xfc2c3f3841f17c67, 0xbbac2078d443ace3}, + {0x9d9ba7832936edc0, 0xd54b944b84aa4c0e}, + {0xc5029163f384a931, 0x0a9e795e65d4df12}, + {0xf64335bcf065d37d, 0x4d4617b5ff4a16d6}, + {0x99ea0196163fa42e, 0x504bced1bf8e4e46}, + {0xc06481fb9bcf8d39, 0xe45ec2862f71e1d7}, + {0xf07da27a82c37088, 0x5d767327bb4e5a4d}, + {0x964e858c91ba2655, 0x3a6a07f8d510f870}, + {0xbbe226efb628afea, 0x890489f70a55368c}, + {0xeadab0aba3b2dbe5, 0x2b45ac74ccea842f}, + {0x92c8ae6b464fc96f, 0x3b0b8bc90012929e}, + {0xb77ada0617e3bbcb, 0x09ce6ebb40173745}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0x8f57fa54c2a9eab6, 0x9fa946824a12232e}, + {0xb32df8e9f3546564, 0x47939822dc96abfa}, + {0xdff9772470297ebd, 0x59787e2b93bc56f8}, + {0x8bfbea76c619ef36, 0x57eb4edb3c55b65b}, + {0xaefae51477a06b03, 0xede622920b6b23f2}, + {0xdab99e59958885c4, 0xe95fab368e45ecee}, + {0x88b402f7fd75539b, 0x11dbcb0218ebb415}, + {0xaae103b5fcd2a881, 0xd652bdc29f26a11a}, + {0xd59944a37c0752a2, 0x4be76d3346f04960}, + {0x857fcae62d8493a5, 0x6f70a4400c562ddc}, + {0xa6dfbd9fb8e5b88e, 0xcb4ccd500f6bb953}, + {0xd097ad07a71f26b2, 0x7e2000a41346a7a8}, + {0x825ecc24c873782f, 0x8ed400668c0c28c9}, + {0xa2f67f2dfa90563b, 0x728900802f0f32fb}, + {0xcbb41ef979346bca, 0x4f2b40a03ad2ffba}, + {0xfea126b7d78186bc, 0xe2f610c84987bfa9}, + {0x9f24b832e6b0f436, 0x0dd9ca7d2df4d7ca}, + {0xc6ede63fa05d3143, 0x91503d1c79720dbc}, + {0xf8a95fcf88747d94, 0x75a44c6397ce912b}, + {0x9b69dbe1b548ce7c, 0xc986afbe3ee11abb}, + {0xc24452da229b021b, 0xfbe85badce996169}, + {0xf2d56790ab41c2a2, 0xfae27299423fb9c4}, + {0x97c560ba6b0919a5, 0xdccd879fc967d41b}, + {0xbdb6b8e905cb600f, 0x5400e987bbc1c921}, + {0xed246723473e3813, 0x290123e9aab23b69}, + {0x9436c0760c86e30b, 0xf9a0b6720aaf6522}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0xe7958cb87392c2c2, 0xb60b1d1230b20e05}, + {0x90bd77f3483bb9b9, 0xb1c6f22b5e6f48c3}, + {0xb4ecd5f01a4aa828, 0x1e38aeb6360b1af4}, + {0xe2280b6c20dd5232, 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0x8a71e223d8d3b074}, + {0x85c7056562757456, 0xf6872d5667844e49}, + {0xa738c6bebb12d16c, 0xb428f8ac016561db}, + {0xd106f86e69d785c7, 0xe13336d701beba52}, + {0x82a45b450226b39c, 0xecc0024661173473}, + {0xa34d721642b06084, 0x27f002d7f95d0190}, + {0xcc20ce9bd35c78a5, 0x31ec038df7b441f4}, + {0xff290242c83396ce, 0x7e67047175a15271}, + {0x9f79a169bd203e41, 0x0f0062c6e984d386}, + {0xc75809c42c684dd1, 0x52c07b78a3e60868}, + {0xf92e0c3537826145, 0xa7709a56ccdf8a82}, + {0x9bbcc7a142b17ccb, 0x88a66076400bb691}, + {0xc2abf989935ddbfe, 0x6acff893d00ea435}, + {0xf356f7ebf83552fe, 0x0583f6b8c4124d43}, + {0x98165af37b2153de, 0xc3727a337a8b704a}, + {0xbe1bf1b059e9a8d6, 0x744f18c0592e4c5c}, + {0xeda2ee1c7064130c, 0x1162def06f79df73}, + {0x9485d4d1c63e8be7, 0x8addcb5645ac2ba8}, + {0xb9a74a0637ce2ee1, 0x6d953e2bd7173692}, + {0xe8111c87c5c1ba99, 0xc8fa8db6ccdd0437}, + {0x910ab1d4db9914a0, 0x1d9c9892400a22a2}, + {0xb54d5e4a127f59c8, 0x2503beb6d00cab4b}, + {0xe2a0b5dc971f303a, 0x2e44ae64840fd61d}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d2}, + {0xb10d8e1456105dad, 0x7425a83e872c5f47}, + {0xdd50f1996b947518, 0xd12f124e28f77719}, + {0x8a5296ffe33cc92f, 0x82bd6b70d99aaa6f}, + {0xace73cbfdc0bfb7b, 0x636cc64d1001550b}, + {0xd8210befd30efa5a, 0x3c47f7e05401aa4e}, + {0x8714a775e3e95c78, 0x65acfaec34810a71}, + {0xa8d9d1535ce3b396, 0x7f1839a741a14d0d}, + {0xd31045a8341ca07c, 0x1ede48111209a050}, + {0x83ea2b892091e44d, 0x934aed0aab460432}, + {0xa4e4b66b68b65d60, 0xf81da84d5617853f}, + {0xce1de40642e3f4b9, 0x36251260ab9d668e}, + {0x80d2ae83e9ce78f3, 0xc1d72b7c6b426019}, + {0xa1075a24e4421730, 0xb24cf65b8612f81f}, + {0xc94930ae1d529cfc, 0xdee033f26797b627}, + {0xfb9b7cd9a4a7443c, 0x169840ef017da3b1}, + {0x9d412e0806e88aa5, 0x8e1f289560ee864e}, + {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e2}, + {0xf5b5d7ec8acb58a2, 0xae10af696774b1db}, + {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef29}, + {0xbff610b0cc6edd3f, 0x17fd090a58d32af3}, + {0xeff394dcff8a948e, 0xddfc4b4cef07f5b0}, + {0x95f83d0a1fb69cd9, 0x4abdaf101564f98e}, + {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f1}, + {0xea53df5fd18d5513, 0x84c86189216dc5ed}, + {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb4}, + {0xb7118682dbb66a77, 0x3fbc8c33221dc2a1}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, + {0x8f05b1163ba6832d, 0x29cb4d87f2a7400e}, + {0xb2c71d5bca9023f8, 0x743e20e9ef511012}, + {0xdf78e4b2bd342cf6, 0x914da9246b255416}, + {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548e}, + {0xae9672aba3d0c320, 0xa184ac2473b529b1}, + {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741e}, + {0x8865899617fb1871, 0x7e2fa67c7a658892}, + {0xaa7eebfb9df9de8d, 0xddbb901b98feeab7}, + {0xd51ea6fa85785631, 0x552a74227f3ea565}, + {0x8533285c936b35de, 0xd53a88958f87275f}, + {0xa67ff273b8460356, 0x8a892abaf368f137}, + {0xd01fef10a657842c, 0x2d2b7569b0432d85}, + {0x8213f56a67f6b29b, 0x9c3b29620e29fc73}, + {0xa298f2c501f45f42, 0x8349f3ba91b47b8f}, + {0xcb3f2f7642717713, 0x241c70a936219a73}, + {0xfe0efb53d30dd4d7, 0xed238cd383aa0110}, + {0x9ec95d1463e8a506, 0xf4363804324a40aa}, + {0xc67bb4597ce2ce48, 0xb143c6053edcd0d5}, + {0xf81aa16fdc1b81da, 0xdd94b7868e94050a}, + {0x9b10a4e5e9913128, 0xca7cf2b4191c8326}, + {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f0}, + {0xf24a01a73cf2dccf, 0xbc633b39673c8cec}, + {0x976e41088617ca01, 0xd5be0503e085d813}, + {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e18}, + {0xec9c459d51852ba2, 0xddf8e7d60ed1219e}, + {0x93e1ab8252f33b45, 0xcabb90e5c942b503}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, + {0xe7109bfba19c0c9d, 0x0cc512670a783ad4}, + {0x906a617d450187e2, 0x27fb2b80668b24c5}, + {0xb484f9dc9641e9da, 0xb1f9f660802dedf6}, + {0xe1a63853bbd26451, 0x5e7873f8a0396973}, + {0x8d07e33455637eb2, 0xdb0b487b6423e1e8}, + {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda62}, + {0xdc5c5301c56b75f7, 0x7641a140cc7810fb}, + {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9d}, + {0xac2820d9623bf429, 0x546345fa9fbdcd44}, + {0xd732290fbacaf133, 0xa97c177947ad4095}, + {0x867f59a9d4bed6c0, 0x49ed8eabcccc485d}, + {0xa81f301449ee8c70, 0x5c68f256bfff5a74}, + {0xd226fc195c6a2f8c, 0x73832eec6fff3111}, + {0x83585d8fd9c25db7, 0xc831fd53c5ff7eab}, + {0xa42e74f3d032f525, 0xba3e7ca8b77f5e55}, + {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35eb}, + {0x80444b5e7aa7cf85, 0x7980d163cf5b81b3}, + {0xa0555e361951c366, 0xd7e105bcc332621f}, + {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa7}, + {0xfa856334878fc150, 0xb14f98f6f0feb951}, + {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3}, + {0xc3b8358109e84f07, 0x0a862f80ec4700c8}, + {0xf4a642e14c6262c8, 0xcd27bb612758c0fa}, + {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c}, + {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3}, + {0xeeea5d5004981478, 0x1858ccfce06cac74}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc8}, + {0xbaa718e68396cffd, 0xd30560258f54e6ba}, + {0xe950df20247c83fd, 0x47c6b82ef32a2069}, + {0x91d28b7416cdd27e, 0x4cdc331d57fa5441}, + {0xb6472e511c81471d, 0xe0133fe4adf8e952}, + {0xe3d8f9e563a198e5, 0x58180fddd97723a6}, + {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648}, + {0xb201833b35d63f73, 0x2cd2cc6551e513da}, + {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1}, + {0x8b112e86420f6191, 0xfb04afaf27faf782}, + {0xadd57a27d29339f6, 0x79c5db9af1f9b563}, + {0xd94ad8b1c7380874, 0x18375281ae7822bc}, + {0x87cec76f1c830548, 0x8f2293910d0b15b5}, + {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22}, + {0xd433179d9c8cb841, 0x5fa60692a46151eb}, + {0x849feec281d7f328, 0xdbc7c41ba6bcd333}, + {0xa5c7ea73224deff3, 0x12b9b522906c0800}, + {0xcf39e50feae16bef, 0xd768226b34870a00}, + {0x81842f29f2cce375, 0xe6a1158300d46640}, + {0xa1e53af46f801c53, 0x60495ae3c1097fd0}, + {0xca5e89b18b602368, 0x385bb19cb14bdfc4}, + {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5}, + {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1}, + {0xc5a05277621be293, 0xc7098b7305241885}, + { 0xf70867153aa2db38, + 0xb8cbee4fc66d1ea7 } +#else + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0xc350000000000000, 0x0000000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xfee50b7025c36a08, 0x02f236d04753d5b4}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86}, + {0xa6539930bf6bff45, 0x84db8346b786151c}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2}, + {0xd910f7ff28069da4, 0x1b2ba1518094da04}, + {0xaf58416654a6babb, 0x387ac8d1970027b2}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d2}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, + { 0x95527a5202df0ccb, + 0x0f37801e0c43ebc8 } +#endif + }; + +#if FMT_USE_FULL_CACHE_DRAGONBOX + return pow10_significands[k - float_info<double>::min_k]; +#else + static constexpr const uint64_t powers_of_5_64[] = { + 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, + 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, + 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, + 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, + 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, + 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, + 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, + 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, + 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; + + static constexpr const uint32_t pow10_recovery_errors[] = { + 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001, + 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555, + 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110, + 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454, + 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014, + 0x69514555, 0x05151109, 0x00155555}; + + static const int compression_ratio = 27; + + // Compute base index. + int cache_index = (k - float_info<double>::min_k) / compression_ratio; + int kb = cache_index * compression_ratio + float_info<double>::min_k; + int offset = k - kb; + + // Get base cache. + uint128_wrapper base_cache = pow10_significands[cache_index]; + if (offset == 0) return base_cache; + + // Compute the required amount of bit-shift. + int alpha = floor_log2_pow10(kb + offset) - floor_log2_pow10(kb) - offset; + FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected"); + + // Try to recover the real cache. + uint64_t pow5 = powers_of_5_64[offset]; + uint128_wrapper recovered_cache = umul128(base_cache.high(), pow5); + uint128_wrapper middle_low = + umul128(base_cache.low() - (kb < 0 ? 1u : 0u), pow5); + + recovered_cache += middle_low.high(); + + uint64_t high_to_middle = recovered_cache.high() << (64 - alpha); + uint64_t middle_to_low = recovered_cache.low() << (64 - alpha); + + recovered_cache = + uint128_wrapper{(recovered_cache.low() >> alpha) | high_to_middle, + ((middle_low.low() >> alpha) | middle_to_low)}; + + if (kb < 0) recovered_cache += 1; + + // Get error. + int error_idx = (k - float_info<double>::min_k) / 16; + uint32_t error = (pow10_recovery_errors[error_idx] >> + ((k - float_info<double>::min_k) % 16) * 2) & + 0x3; + + // Add the error back. + FMT_ASSERT(recovered_cache.low() + error >= recovered_cache.low(), ""); + return {recovered_cache.high(), recovered_cache.low() + error}; +#endif + } + + static carrier_uint compute_mul(carrier_uint u, + const cache_entry_type& cache) FMT_NOEXCEPT { + return umul192_upper64(u, cache); + } + + static uint32_t compute_delta(cache_entry_type const& cache, + int beta_minus_1) FMT_NOEXCEPT { + return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta_minus_1)); + } + + static bool compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + FMT_ASSERT(beta_minus_1 >= 1, ""); + FMT_ASSERT(beta_minus_1 < 64, ""); + + return ((umul192_middle64(two_f, cache) >> (64 - beta_minus_1)) & 1) != 0; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (cache.high() - + (cache.high() >> (float_info<double>::significand_bits + 2))) >> + (64 - float_info<double>::significand_bits - 1 - beta_minus_1); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (cache.high() + + (cache.high() >> (float_info<double>::significand_bits + 1))) >> + (64 - float_info<double>::significand_bits - 1 - beta_minus_1); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return ((cache.high() >> + (64 - float_info<double>::significand_bits - 2 - beta_minus_1)) + + 1) / + 2; + } +}; + +// Various integer checks +template <class T> +bool is_left_endpoint_integer_shorter_interval(int exponent) FMT_NOEXCEPT { + return exponent >= + float_info< + T>::case_shorter_interval_left_endpoint_lower_threshold && + exponent <= + float_info<T>::case_shorter_interval_left_endpoint_upper_threshold; +} +template <class T> +bool is_endpoint_integer(typename float_info<T>::carrier_uint two_f, + int exponent, int minus_k) FMT_NOEXCEPT { + if (exponent < float_info<T>::case_fc_pm_half_lower_threshold) return false; + // For k >= 0. + if (exponent <= float_info<T>::case_fc_pm_half_upper_threshold) return true; + // For k < 0. + if (exponent > float_info<T>::divisibility_check_by_5_threshold) return false; + return divisible_by_power_of_5(two_f, minus_k); +} + +template <class T> +bool is_center_integer(typename float_info<T>::carrier_uint two_f, int exponent, + int minus_k) FMT_NOEXCEPT { + // Exponent for 5 is negative. + if (exponent > float_info<T>::divisibility_check_by_5_threshold) return false; + if (exponent > float_info<T>::case_fc_upper_threshold) + return divisible_by_power_of_5(two_f, minus_k); + // Both exponents are nonnegative. + if (exponent >= float_info<T>::case_fc_lower_threshold) return true; + // Exponent for 2 is negative. + return divisible_by_power_of_2(two_f, minus_k - exponent + 1); +} + +// Remove trailing zeros from n and return the number of zeros removed (float) +FMT_ALWAYS_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT { +#ifdef FMT_BUILTIN_CTZ + int t = FMT_BUILTIN_CTZ(n); +#else + int t = ctz(n); +#endif + if (t > float_info<float>::max_trailing_zeros) + t = float_info<float>::max_trailing_zeros; + + const uint32_t mod_inv1 = 0xcccccccd; + const uint32_t max_quotient1 = 0x33333333; + const uint32_t mod_inv2 = 0xc28f5c29; + const uint32_t max_quotient2 = 0x0a3d70a3; + + int s = 0; + for (; s < t - 1; s += 2) { + if (n * mod_inv2 > max_quotient2) break; + n *= mod_inv2; + } + if (s < t && n * mod_inv1 <= max_quotient1) { + n *= mod_inv1; + ++s; + } + n >>= s; + return s; +} + +// Removes trailing zeros and returns the number of zeros removed (double) +FMT_ALWAYS_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT { +#ifdef FMT_BUILTIN_CTZLL + int t = FMT_BUILTIN_CTZLL(n); +#else + int t = ctzll(n); +#endif + if (t > float_info<double>::max_trailing_zeros) + t = float_info<double>::max_trailing_zeros; + // Divide by 10^8 and reduce to 32-bits + // Since ret_value.significand <= (2^64 - 1) / 1000 < 10^17, + // both of the quotient and the r should fit in 32-bits + + const uint32_t mod_inv1 = 0xcccccccd; + const uint32_t max_quotient1 = 0x33333333; + const uint64_t mod_inv8 = 0xc767074b22e90e21; + const uint64_t max_quotient8 = 0x00002af31dc46118; + + // If the number is divisible by 1'0000'0000, work with the quotient + if (t >= 8) { + auto quotient_candidate = n * mod_inv8; + + if (quotient_candidate <= max_quotient8) { + auto quotient = static_cast<uint32_t>(quotient_candidate >> 8); + + int s = 8; + for (; s < t; ++s) { + if (quotient * mod_inv1 > max_quotient1) break; + quotient *= mod_inv1; + } + quotient >>= (s - 8); + n = quotient; + return s; + } + } + + // Otherwise, work with the remainder + auto quotient = static_cast<uint32_t>(n / 100000000); + auto remainder = static_cast<uint32_t>(n - 100000000 * quotient); + + if (t == 0 || remainder * mod_inv1 > max_quotient1) { + return 0; + } + remainder *= mod_inv1; + + if (t == 1 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 1) + quotient * 10000000ull; + return 1; + } + remainder *= mod_inv1; + + if (t == 2 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 2) + quotient * 1000000ull; + return 2; + } + remainder *= mod_inv1; + + if (t == 3 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 3) + quotient * 100000ull; + return 3; + } + remainder *= mod_inv1; + + if (t == 4 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 4) + quotient * 10000ull; + return 4; + } + remainder *= mod_inv1; + + if (t == 5 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 5) + quotient * 1000ull; + return 5; + } + remainder *= mod_inv1; + + if (t == 6 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 6) + quotient * 100ull; + return 6; + } + remainder *= mod_inv1; + + n = (remainder >> 7) + quotient * 10ull; + return 7; +} + +// The main algorithm for shorter interval case +template <class T> +FMT_ALWAYS_INLINE decimal_fp<T> shorter_interval_case(int exponent) + FMT_NOEXCEPT { + decimal_fp<T> ret_value; + // Compute k and beta + const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent); + const int beta_minus_1 = exponent + floor_log2_pow10(-minus_k); + + // Compute xi and zi + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + + auto xi = cache_accessor<T>::compute_left_endpoint_for_shorter_interval_case( + cache, beta_minus_1); + auto zi = cache_accessor<T>::compute_right_endpoint_for_shorter_interval_case( + cache, beta_minus_1); + + // If the left endpoint is not an integer, increase it + if (!is_left_endpoint_integer_shorter_interval<T>(exponent)) ++xi; + + // Try bigger divisor + ret_value.significand = zi / 10; + + // If succeed, remove trailing zeros if necessary and return + if (ret_value.significand * 10 >= xi) { + ret_value.exponent = minus_k + 1; + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + } + + // Otherwise, compute the round-up of y + ret_value.significand = + cache_accessor<T>::compute_round_up_for_shorter_interval_case( + cache, beta_minus_1); + ret_value.exponent = minus_k; + + // When tie occurs, choose one of them according to the rule + if (exponent >= float_info<T>::shorter_interval_tie_lower_threshold && + exponent <= float_info<T>::shorter_interval_tie_upper_threshold) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } else if (ret_value.significand < xi) { + ++ret_value.significand; + } + return ret_value; +} + +template <typename T> decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT { + // Step 1: integer promotion & Schubfach multiplier calculation. + + using carrier_uint = typename float_info<T>::carrier_uint; + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + auto br = bit_cast<carrier_uint>(x); + + // Extract significand bits and exponent bits. + const carrier_uint significand_mask = + (static_cast<carrier_uint>(1) << float_info<T>::significand_bits) - 1; + carrier_uint significand = (br & significand_mask); + int exponent = static_cast<int>((br & exponent_mask<T>()) >> + float_info<T>::significand_bits); + + if (exponent != 0) { // Check if normal. + exponent += float_info<T>::exponent_bias - float_info<T>::significand_bits; + + // Shorter interval case; proceed like Schubfach. + if (significand == 0) return shorter_interval_case<T>(exponent); + + significand |= + (static_cast<carrier_uint>(1) << float_info<T>::significand_bits); + } else { + // Subnormal case; the interval is always regular. + if (significand == 0) return {0, 0}; + exponent = float_info<T>::min_exponent - float_info<T>::significand_bits; + } + + const bool include_left_endpoint = (significand % 2 == 0); + const bool include_right_endpoint = include_left_endpoint; + + // Compute k and beta. + const int minus_k = floor_log10_pow2(exponent) - float_info<T>::kappa; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + const int beta_minus_1 = exponent + floor_log2_pow10(-minus_k); + + // Compute zi and deltai + // 10^kappa <= deltai < 10^(kappa + 1) + const uint32_t deltai = cache_accessor<T>::compute_delta(cache, beta_minus_1); + const carrier_uint two_fc = significand << 1; + const carrier_uint two_fr = two_fc | 1; + const carrier_uint zi = + cache_accessor<T>::compute_mul(two_fr << beta_minus_1, cache); + + // Step 2: Try larger divisor; remove trailing zeros if necessary + + // Using an upper bound on zi, we might be able to optimize the division + // better than the compiler; we are computing zi / big_divisor here + decimal_fp<T> ret_value; + ret_value.significand = divide_by_10_to_kappa_plus_1(zi); + uint32_t r = static_cast<uint32_t>(zi - float_info<T>::big_divisor * + ret_value.significand); + + if (r > deltai) { + goto small_divisor_case_label; + } else if (r < deltai) { + // Exclude the right endpoint if necessary + if (r == 0 && !include_right_endpoint && + is_endpoint_integer<T>(two_fr, exponent, minus_k)) { + --ret_value.significand; + r = float_info<T>::big_divisor; + goto small_divisor_case_label; + } + } else { + // r == deltai; compare fractional parts + // Check conditions in the order different from the paper + // to take advantage of short-circuiting + const carrier_uint two_fl = two_fc - 1; + if ((!include_left_endpoint || + !is_endpoint_integer<T>(two_fl, exponent, minus_k)) && + !cache_accessor<T>::compute_mul_parity(two_fl, cache, beta_minus_1)) { + goto small_divisor_case_label; + } + } + ret_value.exponent = minus_k + float_info<T>::kappa + 1; + + // We may need to remove trailing zeros + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + + // Step 3: Find the significand with the smaller divisor + +small_divisor_case_label: + ret_value.significand *= 10; + ret_value.exponent = minus_k + float_info<T>::kappa; + + const uint32_t mask = (1u << float_info<T>::kappa) - 1; + auto dist = r - (deltai / 2) + (float_info<T>::small_divisor / 2); + + // Is dist divisible by 2^kappa? + if ((dist & mask) == 0) { + const bool approx_y_parity = + ((dist ^ (float_info<T>::small_divisor / 2)) & 1) != 0; + dist >>= float_info<T>::kappa; + + // Is dist divisible by 5^kappa? + if (check_divisibility_and_divide_by_pow5<float_info<T>::kappa>(dist)) { + ret_value.significand += dist; + + // Check z^(f) >= epsilon^(f) + // We have either yi == zi - epsiloni or yi == (zi - epsiloni) - 1, + // where yi == zi - epsiloni if and only if z^(f) >= epsilon^(f) + // Since there are only 2 possibilities, we only need to care about the + // parity. Also, zi and r should have the same parity since the divisor + // is an even number + if (cache_accessor<T>::compute_mul_parity(two_fc, cache, beta_minus_1) != + approx_y_parity) { + --ret_value.significand; + } else { + // If z^(f) >= epsilon^(f), we might have a tie + // when z^(f) == epsilon^(f), or equivalently, when y is an integer + if (is_center_integer<T>(two_fc, exponent, minus_k)) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } + } + } + // Is dist not divisible by 5^kappa? + else { + ret_value.significand += dist; + } + } + // Is dist not divisible by 2^kappa? + else { + // Since we know dist is small, we might be able to optimize the division + // better than the compiler; we are computing dist / small_divisor here + ret_value.significand += + small_division_by_pow10<float_info<T>::kappa>(dist); + } + return ret_value; +} +} // namespace dragonbox + +// Formats value using a variation of the Fixed-Precision Positive +// Floating-Point Printout ((FPP)^2) algorithm by Steele & White: +// https://fmt.dev/papers/p372-steele.pdf. +template <typename Double> +void fallback_format(Double d, int num_digits, bool binary32, buffer<char>& buf, + int& exp10) { + bigint numerator; // 2 * R in (FPP)^2. + bigint denominator; // 2 * S in (FPP)^2. + // lower and upper are differences between value and corresponding boundaries. + bigint lower; // (M^- in (FPP)^2). + bigint upper_store; // upper's value if different from lower. + bigint* upper = nullptr; // (M^+ in (FPP)^2). + fp value; + // Shift numerator and denominator by an extra bit or two (if lower boundary + // is closer) to make lower and upper integers. This eliminates multiplication + // by 2 during later computations. + const bool is_predecessor_closer = + binary32 ? value.assign(static_cast<float>(d)) : value.assign(d); + int shift = is_predecessor_closer ? 2 : 1; + uint64_t significand = value.f << shift; + if (value.e >= 0) { + numerator.assign(significand); + numerator <<= value.e; + lower.assign(1); + lower <<= value.e; + if (shift != 1) { + upper_store.assign(1); + upper_store <<= value.e + 1; + upper = &upper_store; + } + denominator.assign_pow10(exp10); + denominator <<= shift; + } else if (exp10 < 0) { + numerator.assign_pow10(-exp10); + lower.assign(numerator); + if (shift != 1) { + upper_store.assign(numerator); + upper_store <<= 1; + upper = &upper_store; + } + numerator *= significand; + denominator.assign(1); + denominator <<= shift - value.e; + } else { + numerator.assign(significand); + denominator.assign_pow10(exp10); + denominator <<= shift - value.e; + lower.assign(1); + if (shift != 1) { + upper_store.assign(1ULL << 1); + upper = &upper_store; + } + } + // Invariant: value == (numerator / denominator) * pow(10, exp10). + if (num_digits < 0) { + // Generate the shortest representation. + if (!upper) upper = &lower; + bool even = (value.f & 1) == 0; + num_digits = 0; + char* data = buf.data(); + for (;;) { + int digit = numerator.divmod_assign(denominator); + bool low = compare(numerator, lower) - even < 0; // numerator <[=] lower. + // numerator + upper >[=] pow10: + bool high = add_compare(numerator, *upper, denominator) + even > 0; + data[num_digits++] = static_cast<char>('0' + digit); + if (low || high) { + if (!low) { + ++data[num_digits - 1]; + } else if (high) { + int result = add_compare(numerator, numerator, denominator); + // Round half to even. + if (result > 0 || (result == 0 && (digit % 2) != 0)) + ++data[num_digits - 1]; + } + buf.try_resize(to_unsigned(num_digits)); + exp10 -= num_digits - 1; + return; + } + numerator *= 10; + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + // Generate the given number of digits. + exp10 -= num_digits - 1; + if (num_digits == 0) { + buf.try_resize(1); + denominator *= 10; + buf[0] = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + return; + } + buf.try_resize(to_unsigned(num_digits)); + for (int i = 0; i < num_digits - 1; ++i) { + int digit = numerator.divmod_assign(denominator); + buf[i] = static_cast<char>('0' + digit); + numerator *= 10; + } + int digit = numerator.divmod_assign(denominator); + auto result = add_compare(numerator, numerator, denominator); + if (result > 0 || (result == 0 && (digit % 2) != 0)) { + if (digit == 9) { + const auto overflow = '0' + 10; + buf[num_digits - 1] = overflow; + // Propagate the carry. + for (int i = num_digits - 1; i > 0 && buf[i] == overflow; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] == overflow) { + buf[0] = '1'; + ++exp10; + } + return; + } + ++digit; + } + buf[num_digits - 1] = static_cast<char>('0' + digit); +} + +template <typename T> +int format_float(T value, int precision, float_specs specs, buffer<char>& buf) { + static_assert(!std::is_same<T, float>::value, ""); + FMT_ASSERT(value >= 0, "value is negative"); + + const bool fixed = specs.format == float_format::fixed; + if (value <= 0) { // <= instead of == to silence a warning. + if (precision <= 0 || !fixed) { + buf.push_back('0'); + return 0; + } + buf.try_resize(to_unsigned(precision)); + std::uninitialized_fill_n(buf.data(), precision, '0'); + return -precision; + } + + if (!specs.use_grisu) return snprintf_float(value, precision, specs, buf); + + if (precision < 0) { + // Use Dragonbox for the shortest format. + if (specs.binary32) { + auto dec = dragonbox::to_decimal(static_cast<float>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } + auto dec = dragonbox::to_decimal(static_cast<double>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } + + // Use Grisu + Dragon4 for the given precision: + // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf. + int exp = 0; + const int min_exp = -60; // alpha in Grisu. + int cached_exp10 = 0; // K in Grisu. + fp normalized = normalize(fp(value)); + const auto cached_pow = get_cached_power( + min_exp - (normalized.e + fp::significand_size), cached_exp10); + normalized = normalized * cached_pow; + // Limit precision to the maximum possible number of significant digits in an + // IEEE754 double because we don't need to generate zeros. + const int max_double_digits = 767; + if (precision > max_double_digits) precision = max_double_digits; + fixed_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; + if (grisu_gen_digits(normalized, 1, exp, handler) == digits::error) { + exp += handler.size - cached_exp10 - 1; + fallback_format(value, handler.precision, specs.binary32, buf, exp); + } else { + exp += handler.exp10; + buf.try_resize(to_unsigned(handler.size)); + } + if (!fixed && !specs.showpoint) { + // Remove trailing zeros. + auto num_digits = buf.size(); + while (num_digits > 0 && buf[num_digits - 1] == '0') { + --num_digits; + ++exp; + } + buf.try_resize(num_digits); + } + return exp; +} // namespace detail + +template <typename T> +int snprintf_float(T value, int precision, float_specs specs, + buffer<char>& buf) { + // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail. + FMT_ASSERT(buf.capacity() > buf.size(), "empty buffer"); + static_assert(!std::is_same<T, float>::value, ""); + + // Subtract 1 to account for the difference in precision since we use %e for + // both general and exponent format. + if (specs.format == float_format::general || + specs.format == float_format::exp) + precision = (precision >= 0 ? precision : 6) - 1; + + // Build the format string. + enum { max_format_size = 7 }; // The longest format is "%#.*Le". + char format[max_format_size]; + char* format_ptr = format; + *format_ptr++ = '%'; + if (specs.showpoint && specs.format == float_format::hex) *format_ptr++ = '#'; + if (precision >= 0) { + *format_ptr++ = '.'; + *format_ptr++ = '*'; + } + if (std::is_same<T, long double>()) *format_ptr++ = 'L'; + *format_ptr++ = specs.format != float_format::hex + ? (specs.format == float_format::fixed ? 'f' : 'e') + : (specs.upper ? 'A' : 'a'); + *format_ptr = '\0'; + + // Format using snprintf. + auto offset = buf.size(); + for (;;) { + auto begin = buf.data() + offset; + auto capacity = buf.capacity() - offset; +#ifdef FMT_FUZZ + if (precision > 100000) + throw std::runtime_error( + "fuzz mode - avoid large allocation inside snprintf"); +#endif + // Suppress the warning about a nonliteral format string. + // Cannot use auto because of a bug in MinGW (#1532). + int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF; + int result = precision >= 0 + ? snprintf_ptr(begin, capacity, format, precision, value) + : snprintf_ptr(begin, capacity, format, value); + if (result < 0) { + // The buffer will grow exponentially. + buf.try_reserve(buf.capacity() + 1); + continue; + } + auto size = to_unsigned(result); + // Size equal to capacity means that the last character was truncated. + if (size >= capacity) { + buf.try_reserve(size + offset + 1); // Add 1 for the terminating '\0'. + continue; + } + auto is_digit = [](char c) { return c >= '0' && c <= '9'; }; + if (specs.format == float_format::fixed) { + if (precision == 0) { + buf.try_resize(size); + return 0; + } + // Find and remove the decimal point. + auto end = begin + size, p = end; + do { + --p; + } while (is_digit(*p)); + int fraction_size = static_cast<int>(end - p - 1); + std::memmove(p, p + 1, to_unsigned(fraction_size)); + buf.try_resize(size - 1); + return -fraction_size; + } + if (specs.format == float_format::hex) { + buf.try_resize(size + offset); + return 0; + } + // Find and parse the exponent. + auto end = begin + size, exp_pos = end; + do { + --exp_pos; + } while (*exp_pos != 'e'); + char sign = exp_pos[1]; + FMT_ASSERT(sign == '+' || sign == '-', ""); + int exp = 0; + auto p = exp_pos + 2; // Skip 'e' and sign. + do { + FMT_ASSERT(is_digit(*p), ""); + exp = exp * 10 + (*p++ - '0'); + } while (p != end); + if (sign == '-') exp = -exp; + int fraction_size = 0; + if (exp_pos != begin + 1) { + // Remove trailing zeros. + auto fraction_end = exp_pos - 1; + while (*fraction_end == '0') --fraction_end; + // Move the fractional part left to get rid of the decimal point. + fraction_size = static_cast<int>(fraction_end - begin - 1); + std::memmove(begin + 1, begin + 2, to_unsigned(fraction_size)); + } + buf.try_resize(to_unsigned(fraction_size) + offset + 1); + return exp - fraction_size; + } +} + +struct stringifier { + template <typename T> FMT_INLINE std::string operator()(T value) const { + return to_string(value); + } + std::string operator()(basic_format_arg<format_context>::handle h) const { + memory_buffer buf; + format_parse_context parse_ctx({}); + format_context format_ctx(buffer_appender<char>(buf), {}, {}); + h.format(parse_ctx, format_ctx); + return to_string(buf); + } +}; +} // namespace detail + +template <> struct formatter<detail::bigint> { + FMT_CONSTEXPR format_parse_context::iterator parse( + format_parse_context& ctx) { + return ctx.begin(); + } + + format_context::iterator format(const detail::bigint& n, + format_context& ctx) { + auto out = ctx.out(); + bool first = true; + for (auto i = n.bigits_.size(); i > 0; --i) { + auto value = n.bigits_[i - 1u]; + if (first) { + out = format_to(out, FMT_STRING("{:x}"), value); + first = false; + continue; + } + out = format_to(out, FMT_STRING("{:08x}"), value); + } + if (n.exp_ > 0) + out = format_to(out, FMT_STRING("p{}"), + n.exp_ * detail::bigint::bigit_bits); + return out; + } +}; + +FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { + for_each_codepoint(s, [this](uint32_t cp, int error) { + if (error != 0) FMT_THROW(std::runtime_error("invalid utf8")); + if (cp <= 0xFFFF) { + buffer_.push_back(static_cast<wchar_t>(cp)); + } else { + cp -= 0x10000; + buffer_.push_back(static_cast<wchar_t>(0xD800 + (cp >> 10))); + buffer_.push_back(static_cast<wchar_t>(0xDC00 + (cp & 0x3FF))); + } + }); + buffer_.push_back(0); +} + +FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code, + const char* message) FMT_NOEXCEPT { + FMT_TRY { + auto ec = std::error_code(error_code, std::generic_category()); + write(std::back_inserter(out), std::system_error(ec, message).what()); + return; + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +FMT_FUNC void detail::error_handler::on_error(const char* message) { + FMT_THROW(format_error(message)); +} + +FMT_FUNC void report_system_error(int error_code, + const char* message) FMT_NOEXCEPT { + report_error(format_system_error, error_code, message); +} + +FMT_FUNC std::string detail::vformat(string_view format_str, format_args args) { + if (format_str.size() == 2 && equal2(format_str.data(), "{}")) { + auto arg = args.get(0); + if (!arg) error_handler().on_error("argument not found"); + return visit_format_arg(stringifier(), arg); + } + memory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +#ifdef _WIN32 +namespace detail { +using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>; +extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( // + void*, const void*, dword, dword*, void*); +} // namespace detail +#endif + +FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, args); +#ifdef _WIN32 + auto fd = _fileno(f); + if (_isatty(fd)) { + detail::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size())); + auto written = detail::dword(); + if (detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)), + u16.c_str(), static_cast<uint32_t>(u16.size()), + &written, nullptr)) { + return; + } + // Fallback to fwrite on failure. It can happen if the output has been + // redirected to NUL. + } +#endif + detail::fwrite_fully(buffer.data(), 1, buffer.size(), f); +} + +#ifdef _WIN32 +// Print assuming legacy (non-Unicode) encoding. +FMT_FUNC void detail::vprint_mojibake(std::FILE* f, string_view format_str, + format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, + basic_format_args<buffer_context<char>>(args)); + fwrite_fully(buffer.data(), 1, buffer.size(), f); +} +#endif + +FMT_FUNC void vprint(string_view format_str, format_args args) { + vprint(stdout, format_str, args); +} + +FMT_END_NAMESPACE + +#endif // FMT_FORMAT_INL_H_ diff --git a/deps/fmt/include/fmt/format.h b/deps/fmt/include/fmt/format.h new file mode 100644 index 0000000000..a6dbd819fd --- /dev/null +++ b/deps/fmt/include/fmt/format.h @@ -0,0 +1,3309 @@ +/* + Formatting library for C++ + + Copyright (c) 2012 - present, Victor Zverovich + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + --- Optional exception to the license --- + + As an exception, if, as a result of your compiling your source code, portions + of this Software are embedded into a machine-executable object form of such + source code, you may redistribute such embedded portions in such object form + without including the above copyright and permission notices. + */ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#include <cerrno> // errno +#include <cmath> // std::signbit +#include <cstdint> +#include <cwchar> +#include <limits> // std::numeric_limits +#include <memory> // std::uninitialized_copy +#include <stdexcept> // std::runtime_error +#include <system_error> // std::system_error +#include <utility> // std::swap + +#include "core.h" + +#ifdef __INTEL_COMPILER +# define FMT_ICC_VERSION __INTEL_COMPILER +#elif defined(__ICL) +# define FMT_ICC_VERSION __ICL +#else +# define FMT_ICC_VERSION 0 +#endif + +#ifdef __NVCC__ +# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__) +#else +# define FMT_CUDA_VERSION 0 +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_NOINLINE __attribute__((noinline)) +#else +# define FMT_NOINLINE +#endif + +#if FMT_MSC_VER +# define FMT_MSC_DEFAULT = default +#else +# define FMT_MSC_DEFAULT +#endif + +#if __cplusplus == 201103L || __cplusplus == 201402L +# if defined(__INTEL_COMPILER) || defined(__PGI) +# define FMT_FALLTHROUGH +# elif defined(__clang__) +# define FMT_FALLTHROUGH [[clang::fallthrough]] +# elif FMT_GCC_VERSION >= 700 && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) +# define FMT_FALLTHROUGH [[gnu::fallthrough]] +# else +# define FMT_FALLTHROUGH +# endif +#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \ + (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) +# define FMT_FALLTHROUGH [[fallthrough]] +#else +# define FMT_FALLTHROUGH +#endif + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# if FMT_MSC_VER || FMT_NVCC +FMT_BEGIN_NAMESPACE +namespace detail { +template <typename Exception> inline void do_throw(const Exception& x) { + // Silence unreachable code warnings in MSVC and NVCC because these + // are nearly impossible to fix in a generic code. + volatile bool b = true; + if (b) throw x; +} +} // namespace detail +FMT_END_NAMESPACE +# define FMT_THROW(x) detail::do_throw(x) +# else +# define FMT_THROW(x) throw x +# endif +# else +# define FMT_THROW(x) \ + do { \ + FMT_ASSERT(false, (x).what()); \ + } while (false) +# endif +#endif + +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. +# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ + FMT_MSC_VER >= 1900) && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480) +# define FMT_USE_USER_DEFINED_LITERALS 1 +# else +# define FMT_USE_USER_DEFINED_LITERALS 0 +# endif +#endif + +#ifndef FMT_USE_FLOAT +# define FMT_USE_FLOAT 1 +#endif + +#ifndef FMT_USE_DOUBLE +# define FMT_USE_DOUBLE 1 +#endif + +#ifndef FMT_USE_LONG_DOUBLE +# define FMT_USE_LONG_DOUBLE 1 +#endif + +// Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of +// integer formatter template instantiations to just one by only using the +// largest integer type. This results in a reduction in binary size but will +// cause a decrease in integer formatting performance. +#if !defined(FMT_REDUCE_INT_INSTANTIATIONS) +# define FMT_REDUCE_INT_INSTANTIATIONS 0 +#endif + +// __builtin_clz is broken in clang with Microsoft CodeGen: +// https://github.com/fmtlib/fmt/issues/519 +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clz)) && !FMT_MSC_VER +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clzll)) && !FMT_MSC_VER +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctz)) +# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctzll)) +# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) +#endif + +#if FMT_MSC_VER +# include <intrin.h> // _BitScanReverse[64], _BitScanForward[64], _umul128 +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or otherwise support +// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the +// MSVC intrinsics if the clz and clzll builtins are not available. +#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(FMT_BUILTIN_CTZLL) +FMT_BEGIN_NAMESPACE +namespace detail { +// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. +# if !defined(__clang__) +# pragma managed(push, off) +# pragma intrinsic(_BitScanForward) +# pragma intrinsic(_BitScanReverse) +# if defined(_WIN64) +# pragma intrinsic(_BitScanForward64) +# pragma intrinsic(_BitScanReverse64) +# endif +# endif + +inline int clz(uint32_t x) { + unsigned long r = 0; + _BitScanReverse(&r, x); + FMT_ASSERT(x != 0, ""); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. + FMT_MSC_WARNING(suppress : 6102) + return 31 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZ(n) detail::clz(n) + +inline int clzll(uint64_t x) { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 ^ (r + 32); + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast<uint32_t>(x)); +# endif + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return 63 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZLL(n) detail::clzll(n) + +inline int ctz(uint32_t x) { + unsigned long r = 0; + _BitScanForward(&r, x); + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZ(n) detail::ctz(n) + +inline int ctzll(uint64_t x) { + unsigned long r = 0; + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. +# ifdef _WIN64 + _BitScanForward64(&r, x); +# else + // Scan the low 32 bits. + if (_BitScanForward(&r, static_cast<uint32_t>(x))) return static_cast<int>(r); + // Scan the high 32 bits. + _BitScanForward(&r, static_cast<uint32_t>(x >> 32)); + r += 32; +# endif + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZLL(n) detail::ctzll(n) +# if !defined(__clang__) +# pragma managed(pop) +# endif +} // namespace detail +FMT_END_NAMESPACE +#endif + +FMT_BEGIN_NAMESPACE +namespace detail { + +#if __cplusplus >= 202002L || \ + (__cplusplus >= 201709L && FMT_GCC_VERSION >= 1002) +# define FMT_CONSTEXPR20 constexpr +#else +# define FMT_CONSTEXPR20 +#endif + +// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't have +// undefined behavior (e.g. due to type aliasing). +// Example: uint64_t d = bit_cast<uint64_t>(2.718); +template <typename Dest, typename Source> +inline Dest bit_cast(const Source& source) { + static_assert(sizeof(Dest) == sizeof(Source), "size mismatch"); + Dest dest; + std::memcpy(&dest, &source, sizeof(dest)); + return dest; +} + +inline bool is_big_endian() { + const auto u = 1u; + struct bytes { + char data[sizeof(u)]; + }; + return bit_cast<bytes>(u).data[0] == 0; +} + +// A fallback implementation of uintptr_t for systems that lack it. +struct fallback_uintptr { + unsigned char value[sizeof(void*)]; + + fallback_uintptr() = default; + explicit fallback_uintptr(const void* p) { + *this = bit_cast<fallback_uintptr>(p); + if (is_big_endian()) { + for (size_t i = 0, j = sizeof(void*) - 1; i < j; ++i, --j) + std::swap(value[i], value[j]); + } + } +}; +#ifdef UINTPTR_MAX +using uintptr_t = ::uintptr_t; +inline uintptr_t to_uintptr(const void* p) { return bit_cast<uintptr_t>(p); } +#else +using uintptr_t = fallback_uintptr; +inline fallback_uintptr to_uintptr(const void* p) { + return fallback_uintptr(p); +} +#endif + +// Returns the largest possible value for type T. Same as +// std::numeric_limits<T>::max() but shorter and not affected by the max macro. +template <typename T> constexpr T max_value() { + return (std::numeric_limits<T>::max)(); +} +template <typename T> constexpr int num_bits() { + return std::numeric_limits<T>::digits; +} +// std::numeric_limits<T>::digits may return 0 for 128-bit ints. +template <> constexpr int num_bits<int128_t>() { return 128; } +template <> constexpr int num_bits<uint128_t>() { return 128; } +template <> constexpr int num_bits<fallback_uintptr>() { + return static_cast<int>(sizeof(void*) * + std::numeric_limits<unsigned char>::digits); +} + +FMT_INLINE void assume(bool condition) { + (void)condition; +#if FMT_HAS_BUILTIN(__builtin_assume) + __builtin_assume(condition); +#endif +} + +// An approximation of iterator_t for pre-C++20 systems. +template <typename T> +using iterator_t = decltype(std::begin(std::declval<T&>())); +template <typename T> using sentinel_t = decltype(std::end(std::declval<T&>())); + +// A workaround for std::string not having mutable data() until C++17. +template <typename Char> inline Char* get_data(std::basic_string<Char>& s) { + return &s[0]; +} +template <typename Container> +inline typename Container::value_type* get_data(Container& c) { + return c.data(); +} + +#if defined(_SECURE_SCL) && _SECURE_SCL +// Make a checked iterator to avoid MSVC warnings. +template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>; +template <typename T> checked_ptr<T> make_checked(T* p, size_t size) { + return {p, size}; +} +#else +template <typename T> using checked_ptr = T*; +template <typename T> inline T* make_checked(T* p, size_t) { return p; } +#endif + +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION +__attribute__((no_sanitize("undefined"))) +#endif +inline checked_ptr<typename Container::value_type> +reserve(std::back_insert_iterator<Container> it, size_t n) { + Container& c = get_container(it); + size_t size = c.size(); + c.resize(size + n); + return make_checked(get_data(c) + size, n); +} + +template <typename T> +inline buffer_appender<T> reserve(buffer_appender<T> it, size_t n) { + buffer<T>& buf = get_container(it); + buf.try_reserve(buf.size() + n); + return it; +} + +template <typename Iterator> constexpr Iterator& reserve(Iterator& it, size_t) { + return it; +} + +template <typename OutputIt> +using reserve_iterator = + remove_reference_t<decltype(reserve(std::declval<OutputIt&>(), 0))>; + +template <typename T, typename OutputIt> +constexpr T* to_pointer(OutputIt, size_t) { + return nullptr; +} +template <typename T> T* to_pointer(buffer_appender<T> it, size_t n) { + buffer<T>& buf = get_container(it); + auto size = buf.size(); + if (buf.capacity() < size + n) return nullptr; + buf.try_resize(size + n); + return buf.data() + size; +} + +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +inline std::back_insert_iterator<Container> base_iterator( + std::back_insert_iterator<Container>& it, + checked_ptr<typename Container::value_type>) { + return it; +} + +template <typename Iterator> +constexpr Iterator base_iterator(Iterator, Iterator it) { + return it; +} + +// <algorithm> is spectacularly slow to compile in C++20 so use a simple fill_n +// instead (#1998). +template <typename OutputIt, typename Size, typename T> +FMT_CONSTEXPR OutputIt fill_n(OutputIt out, Size count, const T& value) { + for (Size i = 0; i < count; ++i) *out++ = value; + return out; +} +template <typename T, typename Size> +FMT_CONSTEXPR20 T* fill_n(T* out, Size count, char value) { + if (is_constant_evaluated()) { + return fill_n<T*, Size, T>(out, count, value); + } + std::memset(out, value, to_unsigned(count)); + return out + count; +} + +#ifdef __cpp_char8_t +using char8_type = char8_t; +#else +enum char8_type : unsigned char {}; +#endif + +template <typename InputIt, typename OutChar> +using needs_conversion = bool_constant< + std::is_same<typename std::iterator_traits<InputIt>::value_type, + char>::value && + std::is_same<OutChar, char8_type>::value>; + +template <typename OutChar, typename InputIt, typename OutputIt, + FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)> +FMT_CONSTEXPR OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { + while (begin != end) *it++ = *begin++; + return it; +} + +template <typename OutChar, typename InputIt, + FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)> +FMT_CONSTEXPR20 OutChar* copy_str(InputIt begin, InputIt end, OutChar* out) { + if (is_constant_evaluated()) { + return copy_str<OutChar, InputIt, OutChar*>(begin, end, out); + } + auto size = to_unsigned(end - begin); + std::uninitialized_copy(begin, end, make_checked(out, size)); + return out + size; +} + +template <typename OutChar, typename InputIt, typename OutputIt, + FMT_ENABLE_IF(needs_conversion<InputIt, OutChar>::value)> +OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { + while (begin != end) *it++ = static_cast<char8_type>(*begin++); + return it; +} + +template <typename OutChar, typename InputIt, + FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)> +buffer_appender<OutChar> copy_str(InputIt begin, InputIt end, + buffer_appender<OutChar> out) { + get_container(out).append(begin, end); + return out; +} + +// A public domain branchless UTF-8 decoder by Christopher Wellons: +// https://github.com/skeeto/branchless-utf8 +/* Decode the next character, c, from s, reporting errors in e. + * + * Since this is a branchless decoder, four bytes will be read from the + * buffer regardless of the actual length of the next character. This + * means the buffer _must_ have at least three bytes of zero padding + * following the end of the data stream. + * + * Errors are reported in e, which will be non-zero if the parsed + * character was somehow invalid: invalid byte sequence, non-canonical + * encoding, or a surrogate half. + * + * The function returns a pointer to the next character. When an error + * occurs, this pointer will be a guess that depends on the particular + * error, but it will always advance at least one byte. + */ +FMT_CONSTEXPR inline const char* utf8_decode(const char* s, uint32_t* c, + int* e) { + constexpr const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; + constexpr const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; + constexpr const int shiftc[] = {0, 18, 12, 6, 0}; + constexpr const int shifte[] = {0, 6, 4, 2, 0}; + + int len = code_point_length(s); + const char* next = s + len; + + // Assume a four-byte character and load four bytes. Unused bits are + // shifted out. + *c = uint32_t(s[0] & masks[len]) << 18; + *c |= uint32_t(s[1] & 0x3f) << 12; + *c |= uint32_t(s[2] & 0x3f) << 6; + *c |= uint32_t(s[3] & 0x3f) << 0; + *c >>= shiftc[len]; + + // Accumulate the various error conditions. + using uchar = unsigned char; + *e = (*c < mins[len]) << 6; // non-canonical encoding + *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? + *e |= (*c > 0x10FFFF) << 8; // out of range? + *e |= (uchar(s[1]) & 0xc0) >> 2; + *e |= (uchar(s[2]) & 0xc0) >> 4; + *e |= uchar(s[3]) >> 6; + *e ^= 0x2a; // top two bits of each tail byte correct? + *e >>= shifte[len]; + + return next; +} + +template <typename F> +FMT_CONSTEXPR void for_each_codepoint(string_view s, F f) { + auto decode = [f](const char* p) { + auto cp = uint32_t(); + auto error = 0; + p = utf8_decode(p, &cp, &error); + f(cp, error); + return p; + }; + auto p = s.data(); + const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. + if (s.size() >= block_size) { + for (auto end = p + s.size() - block_size + 1; p < end;) p = decode(p); + } + if (auto num_chars_left = s.data() + s.size() - p) { + char buf[2 * block_size - 1] = {}; + copy_str<char>(p, p + num_chars_left, buf); + p = buf; + do { + p = decode(p); + } while (p - buf < num_chars_left); + } +} + +template <typename Char> +inline size_t compute_width(basic_string_view<Char> s) { + return s.size(); +} + +// Computes approximate display width of a UTF-8 string. +FMT_CONSTEXPR inline size_t compute_width(string_view s) { + size_t num_code_points = 0; + // It is not a lambda for compatibility with C++14. + struct count_code_points { + size_t* count; + FMT_CONSTEXPR void operator()(uint32_t cp, int error) const { + *count += + 1 + + (error == 0 && cp >= 0x1100 && + (cp <= 0x115f || // Hangul Jamo init. consonants + cp == 0x2329 || // LEFT-POINTING ANGLE BRACKET〈 + cp == 0x232a || // RIGHT-POINTING ANGLE BRACKET 〉 + // CJK ... Yi except Unicode Character “〿”: + (cp >= 0x2e80 && cp <= 0xa4cf && cp != 0x303f) || + (cp >= 0xac00 && cp <= 0xd7a3) || // Hangul Syllables + (cp >= 0xf900 && cp <= 0xfaff) || // CJK Compatibility Ideographs + (cp >= 0xfe10 && cp <= 0xfe19) || // Vertical Forms + (cp >= 0xfe30 && cp <= 0xfe6f) || // CJK Compatibility Forms + (cp >= 0xff00 && cp <= 0xff60) || // Fullwidth Forms + (cp >= 0xffe0 && cp <= 0xffe6) || // Fullwidth Forms + (cp >= 0x20000 && cp <= 0x2fffd) || // CJK + (cp >= 0x30000 && cp <= 0x3fffd) || + // Miscellaneous Symbols and Pictographs + Emoticons: + (cp >= 0x1f300 && cp <= 0x1f64f) || + // Supplemental Symbols and Pictographs: + (cp >= 0x1f900 && cp <= 0x1f9ff))); + } + }; + for_each_codepoint(s, count_code_points{&num_code_points}); + return num_code_points; +} + +inline size_t compute_width(basic_string_view<char8_type> s) { + return compute_width(basic_string_view<char>( + reinterpret_cast<const char*>(s.data()), s.size())); +} + +template <typename Char> +inline size_t code_point_index(basic_string_view<Char> s, size_t n) { + size_t size = s.size(); + return n < size ? n : size; +} + +// Calculates the index of the nth code point in a UTF-8 string. +inline size_t code_point_index(basic_string_view<char8_type> s, size_t n) { + const char8_type* data = s.data(); + size_t num_code_points = 0; + for (size_t i = 0, size = s.size(); i != size; ++i) { + if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i; + } + return s.size(); +} + +template <typename T> +using is_fast_float = bool_constant<std::numeric_limits<T>::is_iec559 && + sizeof(T) <= sizeof(double)>; + +#ifndef FMT_USE_FULL_CACHE_DRAGONBOX +# define FMT_USE_FULL_CACHE_DRAGONBOX 0 +#endif + +template <typename T> +template <typename U> +void buffer<T>::append(const U* begin, const U* end) { + while (begin != end) { + auto count = to_unsigned(end - begin); + try_reserve(size_ + count); + auto free_cap = capacity_ - size_; + if (free_cap < count) count = free_cap; + std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count)); + size_ += count; + begin += count; + } +} + +template <typename OutputIt, typename T, typename Traits> +void iterator_buffer<OutputIt, T, Traits>::flush() { + auto size = this->size(); + this->clear(); + out_ = copy_str<T>(data_, data_ + this->limit(size), out_); +} +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +template <> struct is_char<detail::char8_type> : std::true_type {}; +template <> struct is_char<char16_t> : std::true_type {}; +template <> struct is_char<char32_t> : std::true_type {}; + +// The number of characters to store in the basic_memory_buffer object itself +// to avoid dynamic memory allocation. +enum { inline_buffer_size = 500 }; + +/** + \rst + A dynamically growing memory buffer for trivially copyable/constructible types + with the first ``SIZE`` elements stored in the object itself. + + You can use one of the following type aliases for common character types: + + +----------------+------------------------------+ + | Type | Definition | + +================+==============================+ + | memory_buffer | basic_memory_buffer<char> | + +----------------+------------------------------+ + | wmemory_buffer | basic_memory_buffer<wchar_t> | + +----------------+------------------------------+ + + **Example**:: + + fmt::memory_buffer out; + format_to(out, "The answer is {}.", 42); + + This will append the following output to the ``out`` object: + + .. code-block:: none + + The answer is 42. + + The output can be converted to an ``std::string`` with ``to_string(out)``. + \endrst + */ +template <typename T, size_t SIZE = inline_buffer_size, + typename Allocator = std::allocator<T>> +class basic_memory_buffer final : public detail::buffer<T> { + private: + T store_[SIZE]; + + // Don't inherit from Allocator avoid generating type_info for it. + Allocator alloc_; + + // Deallocate memory allocated by the buffer. + void deallocate() { + T* data = this->data(); + if (data != store_) alloc_.deallocate(data, this->capacity()); + } + + protected: + void grow(size_t size) final FMT_OVERRIDE; + + public: + using value_type = T; + using const_reference = const T&; + + explicit basic_memory_buffer(const Allocator& alloc = Allocator()) + : alloc_(alloc) { + this->set(store_, SIZE); + } + ~basic_memory_buffer() { deallocate(); } + + private: + // Move data from other to this buffer. + void move(basic_memory_buffer& other) { + alloc_ = std::move(other.alloc_); + T* data = other.data(); + size_t size = other.size(), capacity = other.capacity(); + if (data == other.store_) { + this->set(store_, capacity); + std::uninitialized_copy(other.store_, other.store_ + size, + detail::make_checked(store_, capacity)); + } else { + this->set(data, capacity); + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.set(other.store_, 0); + } + this->resize(size); + } + + public: + /** + \rst + Constructs a :class:`fmt::basic_memory_buffer` object moving the content + of the other object to it. + \endrst + */ + basic_memory_buffer(basic_memory_buffer&& other) FMT_NOEXCEPT { move(other); } + + /** + \rst + Moves the content of the other ``basic_memory_buffer`` object to this one. + \endrst + */ + basic_memory_buffer& operator=(basic_memory_buffer&& other) FMT_NOEXCEPT { + FMT_ASSERT(this != &other, ""); + deallocate(); + move(other); + return *this; + } + + // Returns a copy of the allocator associated with this buffer. + Allocator get_allocator() const { return alloc_; } + + /** + Resizes the buffer to contain *count* elements. If T is a POD type new + elements may not be initialized. + */ + void resize(size_t count) { this->try_resize(count); } + + /** Increases the buffer capacity to *new_capacity*. */ + void reserve(size_t new_capacity) { this->try_reserve(new_capacity); } + + // Directly append data into the buffer + using detail::buffer<T>::append; + template <typename ContiguousRange> + void append(const ContiguousRange& range) { + append(range.data(), range.data() + range.size()); + } +}; + +template <typename T, size_t SIZE, typename Allocator> +void basic_memory_buffer<T, SIZE, Allocator>::grow(size_t size) { +#ifdef FMT_FUZZ + if (size > 5000) throw std::runtime_error("fuzz mode - won't grow that much"); +#endif + const size_t max_size = std::allocator_traits<Allocator>::max_size(alloc_); + size_t old_capacity = this->capacity(); + size_t new_capacity = old_capacity + old_capacity / 2; + if (size > new_capacity) + new_capacity = size; + else if (new_capacity > max_size) + new_capacity = size > max_size ? size : max_size; + T* old_data = this->data(); + T* new_data = + std::allocator_traits<Allocator>::allocate(alloc_, new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + std::uninitialized_copy(old_data, old_data + this->size(), + detail::make_checked(new_data, new_capacity)); + this->set(new_data, new_capacity); + // deallocate must not throw according to the standard, but even if it does, + // the buffer already uses the new storage and will deallocate it in + // destructor. + if (old_data != store_) alloc_.deallocate(old_data, old_capacity); +} + +using memory_buffer = basic_memory_buffer<char>; +using wmemory_buffer = basic_memory_buffer<wchar_t>; + +template <typename T, size_t SIZE, typename Allocator> +struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type { +}; + +/** A formatting error such as invalid format string. */ +FMT_CLASS_API +class FMT_API format_error : public std::runtime_error { + public: + explicit format_error(const char* message) : std::runtime_error(message) {} + explicit format_error(const std::string& message) + : std::runtime_error(message) {} + format_error(const format_error&) = default; + format_error& operator=(const format_error&) = default; + format_error(format_error&&) = default; + format_error& operator=(format_error&&) = default; + ~format_error() FMT_NOEXCEPT FMT_OVERRIDE FMT_MSC_DEFAULT; +}; + +FMT_BEGIN_DETAIL_NAMESPACE + +inline void throw_format_error(const char* message) { + FMT_THROW(format_error(message)); +} + +template <typename T> struct is_integral : std::is_integral<T> {}; +template <> struct is_integral<int128_t> : std::true_type {}; +template <> struct is_integral<uint128_t> : std::true_type {}; + +template <typename T> +using is_signed = + std::integral_constant<bool, std::numeric_limits<T>::is_signed || + std::is_same<T, int128_t>::value>; + +// Returns true if value is negative, false otherwise. +// Same as `value < 0` but doesn't produce warnings if T is an unsigned type. +template <typename T, FMT_ENABLE_IF(is_signed<T>::value)> +FMT_CONSTEXPR bool is_negative(T value) { + return value < 0; +} +template <typename T, FMT_ENABLE_IF(!is_signed<T>::value)> +FMT_CONSTEXPR bool is_negative(T) { + return false; +} + +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +FMT_CONSTEXPR bool is_supported_floating_point(T) { + return (std::is_same<T, float>::value && FMT_USE_FLOAT) || + (std::is_same<T, double>::value && FMT_USE_DOUBLE) || + (std::is_same<T, long double>::value && FMT_USE_LONG_DOUBLE); +} + +// Smallest of uint32_t, uint64_t, uint128_t that is large enough to +// represent all values of an integral type T. +template <typename T> +using uint32_or_64_or_128_t = + conditional_t<num_bits<T>() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS, + uint32_t, + conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>; +template <typename T> +using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \ + (factor)*1000000, (factor)*10000000, (factor)*100000000, \ + (factor)*1000000000 + +// Static data is placed in this class template for the header-only config. +template <typename T = void> struct basic_data { + // log10(2) = 0x0.4d104d427de7fbcc... + static const uint64_t log10_2_significand = 0x4d104d427de7fbcc; + + // GCC generates slightly better code for pairs than chars. + using digit_pair = char[2]; + static constexpr const digit_pair digits[] = { + {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'}, + {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'}, + {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'}, + {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'}, + {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'}, + {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'}, + {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'}, + {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'}, + {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'}, + {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'}, + {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'}, + {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'}, + {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'}, + {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'}, + {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'}, + {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'}, + {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}}; + + static constexpr const char hex_digits[] = "0123456789abcdef"; + static constexpr const char signs[] = {0, '-', '+', ' '}; + static constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+', + 0x1000000u | ' '}; + static constexpr const char left_padding_shifts[] = {31, 31, 0, 1, 0}; + static constexpr const char right_padding_shifts[] = {0, 31, 0, 1, 0}; +}; + +// This is a struct rather than an alias to avoid shadowing warnings in gcc. +struct data : basic_data<> {}; + +// Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). +// This is a function instead of an array to workaround a bug in GCC10 (#1810). +FMT_INLINE uint16_t bsr2log10(int bsr) { + static constexpr uint16_t data[] = { + 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, + 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, + 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; + return data[bsr]; +} + +template <typename T> FMT_CONSTEXPR int count_digits_fallback(T n) { + int count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#if FMT_USE_INT128 +FMT_CONSTEXPR inline int count_digits(uint128_t n) { + return count_digits_fallback(n); +} +#endif + +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +FMT_CONSTEXPR20 inline int count_digits(uint64_t n) { + if (is_constant_evaluated()) { + return count_digits_fallback(n); + } +#ifdef FMT_BUILTIN_CLZLL + // https://github.com/fmtlib/format-benchmark/blob/master/digits10 + auto t = bsr2log10(FMT_BUILTIN_CLZLL(n | 1) ^ 63); + constexpr const uint64_t zero_or_powers_of_10[] = { + 0, 0, FMT_POWERS_OF_10(1U), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + return t - (n < zero_or_powers_of_10[t]); +#else + return count_digits_fallback(n); +#endif +} + +// Counts the number of digits in n. BITS = log2(radix). +template <int BITS, typename UInt> FMT_CONSTEXPR int count_digits(UInt n) { +#ifdef FMT_BUILTIN_CLZ + if (num_bits<UInt>() == 32) + return (FMT_BUILTIN_CLZ(static_cast<uint32_t>(n) | 1) ^ 31) / BITS + 1; +#endif + int num_digits = 0; + do { + ++num_digits; + } while ((n >>= BITS) != 0); + return num_digits; +} + +template <> int count_digits<4>(detail::fallback_uintptr n); + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_ALWAYS_INLINE inline __attribute__((always_inline)) +#elif FMT_MSC_VER +# define FMT_ALWAYS_INLINE __forceinline +#else +# define FMT_ALWAYS_INLINE inline +#endif + +#ifdef FMT_BUILTIN_CLZ +// Optional version of count_digits for better performance on 32-bit platforms. +FMT_CONSTEXPR20 inline int count_digits(uint32_t n) { + if (is_constant_evaluated()) { + return count_digits_fallback(n); + } + auto t = bsr2log10(FMT_BUILTIN_CLZ(n | 1) ^ 31); + constexpr const uint32_t zero_or_powers_of_10[] = {0, 0, + FMT_POWERS_OF_10(1U)}; + return t - (n < zero_or_powers_of_10[t]); +} +#endif + +template <typename Int> constexpr int digits10() FMT_NOEXCEPT { + return std::numeric_limits<Int>::digits10; +} +template <> constexpr int digits10<int128_t>() FMT_NOEXCEPT { return 38; } +template <> constexpr int digits10<uint128_t>() FMT_NOEXCEPT { return 38; } + +// DEPRECATED! grouping will be merged into thousands_sep. +template <typename Char> FMT_API std::string grouping_impl(locale_ref loc); +template <typename Char> inline std::string grouping(locale_ref loc) { + return grouping_impl<char>(loc); +} +template <> inline std::string grouping<wchar_t>(locale_ref loc) { + return grouping_impl<wchar_t>(loc); +} + +template <typename Char> FMT_API Char thousands_sep_impl(locale_ref loc); +template <typename Char> inline Char thousands_sep(locale_ref loc) { + return Char(thousands_sep_impl<char>(loc)); +} +template <> inline wchar_t thousands_sep(locale_ref loc) { + return thousands_sep_impl<wchar_t>(loc); +} + +template <typename Char> FMT_API Char decimal_point_impl(locale_ref loc); +template <typename Char> inline Char decimal_point(locale_ref loc) { + return Char(decimal_point_impl<char>(loc)); +} +template <> inline wchar_t decimal_point(locale_ref loc) { + return decimal_point_impl<wchar_t>(loc); +} + +// Compares two characters for equality. +template <typename Char> bool equal2(const Char* lhs, const char* rhs) { + return lhs[0] == rhs[0] && lhs[1] == rhs[1]; +} +inline bool equal2(const char* lhs, const char* rhs) { + return memcmp(lhs, rhs, 2) == 0; +} + +// Copies two characters from src to dst. +template <typename Char> void copy2(Char* dst, const char* src) { + *dst++ = static_cast<Char>(*src++); + *dst = static_cast<Char>(*src); +} +FMT_INLINE void copy2(char* dst, const char* src) { memcpy(dst, src, 2); } + +template <typename Iterator> struct format_decimal_result { + Iterator begin; + Iterator end; +}; + +// Formats a decimal unsigned integer value writing into out pointing to a +// buffer of specified size. The caller must ensure that the buffer is large +// enough. +template <typename Char, typename UInt> +FMT_CONSTEXPR20 format_decimal_result<Char*> format_decimal(Char* out, + UInt value, + int size) { + FMT_ASSERT(size >= count_digits(value), "invalid digit count"); + out += size; + Char* end = out; + if (is_constant_evaluated()) { + while (value >= 10) { + *--out = static_cast<Char>('0' + value % 10); + value /= 10; + } + *--out = static_cast<Char>('0' + value); + return {out, end}; + } + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + out -= 2; + copy2(out, data::digits[value % 100]); + value /= 100; + } + if (value < 10) { + *--out = static_cast<Char>('0' + value); + return {out, end}; + } + out -= 2; + copy2(out, data::digits[value]); + return {out, end}; +} + +template <typename Char, typename UInt, typename Iterator, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<Iterator>>::value)> +inline format_decimal_result<Iterator> format_decimal(Iterator out, UInt value, + int size) { + // Buffer is large enough to hold all digits (digits10 + 1). + Char buffer[digits10<UInt>() + 1]; + auto end = format_decimal(buffer, value, size).end; + return {out, detail::copy_str<Char>(buffer, end, out)}; +} + +template <unsigned BASE_BITS, typename Char, typename UInt> +FMT_CONSTEXPR Char* format_uint(Char* buffer, UInt value, int num_digits, + bool upper = false) { + buffer += num_digits; + Char* end = buffer; + do { + const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits; + unsigned digit = (value & ((1 << BASE_BITS) - 1)); + *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit) + : digits[digit]); + } while ((value >>= BASE_BITS) != 0); + return end; +} + +template <unsigned BASE_BITS, typename Char> +Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, + bool = false) { + auto char_digits = std::numeric_limits<unsigned char>::digits / 4; + int start = (num_digits + char_digits - 1) / char_digits - 1; + if (int start_digits = num_digits % char_digits) { + unsigned value = n.value[start--]; + buffer = format_uint<BASE_BITS>(buffer, value, start_digits); + } + for (; start >= 0; --start) { + unsigned value = n.value[start]; + buffer += char_digits; + auto p = buffer; + for (int i = 0; i < char_digits; ++i) { + unsigned digit = (value & ((1 << BASE_BITS) - 1)); + *--p = static_cast<Char>(data::hex_digits[digit]); + value >>= BASE_BITS; + } + } + return buffer; +} + +template <unsigned BASE_BITS, typename Char, typename It, typename UInt> +inline It format_uint(It out, UInt value, int num_digits, bool upper = false) { + if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) { + format_uint<BASE_BITS>(ptr, value, num_digits, upper); + return out; + } + // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). + char buffer[num_bits<UInt>() / BASE_BITS + 1]; + format_uint<BASE_BITS>(buffer, value, num_digits, upper); + return detail::copy_str<Char>(buffer, buffer + num_digits, out); +} + +// A converter from UTF-8 to UTF-16. +class utf8_to_utf16 { + private: + wmemory_buffer buffer_; + + public: + FMT_API explicit utf8_to_utf16(string_view s); + operator wstring_view() const { return {&buffer_[0], size()}; } + size_t size() const { return buffer_.size() - 1; } + const wchar_t* c_str() const { return &buffer_[0]; } + std::wstring str() const { return {&buffer_[0], size()}; } +}; + +template <typename T = void> struct null {}; + +namespace dragonbox { + +// Type-specific information that Dragonbox uses. +template <class T> struct float_info; + +template <> struct float_info<float> { + using carrier_uint = uint32_t; + static const int significand_bits = 23; + static const int exponent_bits = 8; + static const int min_exponent = -126; + static const int max_exponent = 127; + static const int exponent_bias = -127; + static const int decimal_digits = 9; + static const int kappa = 1; + static const int big_divisor = 100; + static const int small_divisor = 10; + static const int min_k = -31; + static const int max_k = 46; + static const int cache_bits = 64; + static const int divisibility_check_by_5_threshold = 39; + static const int case_fc_pm_half_lower_threshold = -1; + static const int case_fc_pm_half_upper_threshold = 6; + static const int case_fc_lower_threshold = -2; + static const int case_fc_upper_threshold = 6; + static const int case_shorter_interval_left_endpoint_lower_threshold = 2; + static const int case_shorter_interval_left_endpoint_upper_threshold = 3; + static const int shorter_interval_tie_lower_threshold = -35; + static const int shorter_interval_tie_upper_threshold = -35; + static const int max_trailing_zeros = 7; +}; + +template <> struct float_info<double> { + using carrier_uint = uint64_t; + static const int significand_bits = 52; + static const int exponent_bits = 11; + static const int min_exponent = -1022; + static const int max_exponent = 1023; + static const int exponent_bias = -1023; + static const int decimal_digits = 17; + static const int kappa = 2; + static const int big_divisor = 1000; + static const int small_divisor = 100; + static const int min_k = -292; + static const int max_k = 326; + static const int cache_bits = 128; + static const int divisibility_check_by_5_threshold = 86; + static const int case_fc_pm_half_lower_threshold = -2; + static const int case_fc_pm_half_upper_threshold = 9; + static const int case_fc_lower_threshold = -4; + static const int case_fc_upper_threshold = 9; + static const int case_shorter_interval_left_endpoint_lower_threshold = 2; + static const int case_shorter_interval_left_endpoint_upper_threshold = 3; + static const int shorter_interval_tie_lower_threshold = -77; + static const int shorter_interval_tie_upper_threshold = -77; + static const int max_trailing_zeros = 16; +}; + +template <typename T> struct decimal_fp { + using significand_type = typename float_info<T>::carrier_uint; + significand_type significand; + int exponent; +}; + +template <typename T> FMT_API decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT; +} // namespace dragonbox + +template <typename T> +constexpr typename dragonbox::float_info<T>::carrier_uint exponent_mask() { + using uint = typename dragonbox::float_info<T>::carrier_uint; + return ((uint(1) << dragonbox::float_info<T>::exponent_bits) - 1) + << dragonbox::float_info<T>::significand_bits; +} + +// A floating-point presentation format. +enum class float_format : unsigned char { + general, // General: exponent notation or fixed point based on magnitude. + exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. + fixed, // Fixed point with the default precision of 6, e.g. 0.0012. + hex +}; + +struct float_specs { + int precision; + float_format format : 8; + sign_t sign : 8; + bool upper : 1; + bool locale : 1; + bool binary32 : 1; + bool use_grisu : 1; + bool showpoint : 1; +}; + +// Writes the exponent exp in the form "[+-]d{2,3}" to buffer. +template <typename Char, typename It> It write_exponent(int exp, It it) { + FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range"); + if (exp < 0) { + *it++ = static_cast<Char>('-'); + exp = -exp; + } else { + *it++ = static_cast<Char>('+'); + } + if (exp >= 100) { + const char* top = data::digits[exp / 100]; + if (exp >= 1000) *it++ = static_cast<Char>(top[0]); + *it++ = static_cast<Char>(top[1]); + exp %= 100; + } + const char* d = data::digits[exp]; + *it++ = static_cast<Char>(d[0]); + *it++ = static_cast<Char>(d[1]); + return it; +} + +template <typename T> +int format_float(T value, int precision, float_specs specs, buffer<char>& buf); + +// Formats a floating-point number with snprintf. +template <typename T> +int snprintf_float(T value, int precision, float_specs specs, + buffer<char>& buf); + +template <typename T> T promote_float(T value) { return value; } +inline double promote_float(float value) { return static_cast<double>(value); } + +template <typename ErrorHandler = error_handler, typename Char> +FMT_CONSTEXPR float_specs parse_float_type_spec( + const basic_format_specs<Char>& specs, ErrorHandler&& eh = {}) { + auto result = float_specs(); + result.showpoint = specs.alt; + result.locale = specs.localized; + switch (specs.type) { + case 0: + result.format = float_format::general; + break; + case 'G': + result.upper = true; + FMT_FALLTHROUGH; + case 'g': + result.format = float_format::general; + break; + case 'E': + result.upper = true; + FMT_FALLTHROUGH; + case 'e': + result.format = float_format::exp; + result.showpoint |= specs.precision != 0; + break; + case 'F': + result.upper = true; + FMT_FALLTHROUGH; + case 'f': + result.format = float_format::fixed; + result.showpoint |= specs.precision != 0; + break; + case 'A': + result.upper = true; + FMT_FALLTHROUGH; + case 'a': + result.format = float_format::hex; + break; + default: + eh.on_error("invalid type specifier"); + break; + } + return result; +} + +template <typename ErrorHandler> +FMT_CONSTEXPR void check_int_type_spec(char spec, ErrorHandler&& eh) { + switch (spec) { + case 0: + case 'd': + case 'x': + case 'X': + case 'b': + case 'B': + case 'o': + case 'c': + break; + default: + eh.on_error("invalid type specifier"); + break; + } +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_char_specs(const basic_format_specs<Char>& specs, + Handler&& handler) { + if (specs.type && specs.type != 'c') return handler.on_int(); + if (specs.align == align::numeric || specs.sign != sign::none || specs.alt) + handler.on_error("invalid format specifier for char"); + handler.on_char(); +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) { + if (spec == 0 || spec == 's') + handler.on_string(); + else if (spec == 'p') + handler.on_pointer(); + else + handler.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) { + if (spec != 0 && spec != 's') eh.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) { + if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier"); +} + +template <typename ErrorHandler> +class char_specs_checker : public ErrorHandler { + private: + char type_; + + public: + FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh) + : ErrorHandler(eh), type_(type) {} + + FMT_CONSTEXPR void on_int() { check_int_type_spec(type_, *this); } + FMT_CONSTEXPR void on_char() {} +}; + +template <typename ErrorHandler> +class cstring_type_checker : public ErrorHandler { + public: + FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh) + : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_string() {} + FMT_CONSTEXPR void on_pointer() {} +}; + +template <typename OutputIt, typename Char> +FMT_NOINLINE FMT_CONSTEXPR OutputIt fill(OutputIt it, size_t n, + const fill_t<Char>& fill) { + auto fill_size = fill.size(); + if (fill_size == 1) return detail::fill_n(it, n, fill[0]); + auto data = fill.data(); + for (size_t i = 0; i < n; ++i) + it = copy_str<Char>(data, data + fill_size, it); + return it; +} + +// Writes the output of f, padded according to format specifications in specs. +// size: output size in code units. +// width: output display width in (terminal) column positions. +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +FMT_CONSTEXPR OutputIt write_padded(OutputIt out, + const basic_format_specs<Char>& specs, + size_t size, size_t width, F&& f) { + static_assert(align == align::left || align == align::right, ""); + unsigned spec_width = to_unsigned(specs.width); + size_t padding = spec_width > width ? spec_width - width : 0; + auto* shifts = align == align::left ? data::left_padding_shifts + : data::right_padding_shifts; + size_t left_padding = padding >> shifts[specs.align]; + size_t right_padding = padding - left_padding; + auto it = reserve(out, size + padding * specs.fill.size()); + if (left_padding != 0) it = fill(it, left_padding, specs.fill); + it = f(it); + if (right_padding != 0) it = fill(it, right_padding, specs.fill); + return base_iterator(out, it); +} + +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +constexpr OutputIt write_padded(OutputIt out, + const basic_format_specs<Char>& specs, + size_t size, F&& f) { + return write_padded<align>(out, specs, size, size, f); +} + +template <typename Char, typename OutputIt> +OutputIt write_bytes(OutputIt out, string_view bytes, + const basic_format_specs<Char>& specs) { + return write_padded(out, specs, bytes.size(), + [bytes](reserve_iterator<OutputIt> it) { + const char* data = bytes.data(); + return copy_str<Char>(data, data + bytes.size(), it); + }); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR OutputIt write_char(OutputIt out, Char value, + const basic_format_specs<Char>& specs) { + return write_padded(out, specs, 1, [=](reserve_iterator<OutputIt> it) { + *it++ = value; + return it; + }); +} +template <typename Char, typename OutputIt> +FMT_CONSTEXPR OutputIt write(OutputIt out, Char value, + const basic_format_specs<Char>& specs, + locale_ref loc = {}) { + return !specs.type || specs.type == 'c' + ? write_char(out, value, specs) + : write(out, static_cast<int>(value), specs, loc); +} + +// Data for write_int that doesn't depend on output iterator type. It is used to +// avoid template code bloat. +template <typename Char> struct write_int_data { + size_t size; + size_t padding; + + FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix, + const basic_format_specs<Char>& specs) + : size((prefix >> 24) + to_unsigned(num_digits)), padding(0) { + if (specs.align == align::numeric) { + auto width = to_unsigned(specs.width); + if (width > size) { + padding = width - size; + size = width; + } + } else if (specs.precision > num_digits) { + size = (prefix >> 24) + to_unsigned(specs.precision); + padding = to_unsigned(specs.precision - num_digits); + } + } +}; + +// Writes an integer in the format +// <left-padding><prefix><numeric-padding><digits><right-padding> +// where <digits> are written by write_digits(it). +// prefix contains chars in three lower bytes and the size in the fourth byte. +template <typename OutputIt, typename Char, typename W> +FMT_CONSTEXPR FMT_INLINE OutputIt +write_int(OutputIt out, int num_digits, unsigned prefix, + const basic_format_specs<Char>& specs, W write_digits) { + // Slightly faster check for specs.width == 0 && specs.precision == -1. + if ((specs.width | (specs.precision + 1)) == 0) { + auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24)); + if (prefix != 0) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast<Char>(p & 0xff); + } + return base_iterator(out, write_digits(it)); + } + auto data = write_int_data<Char>(num_digits, prefix, specs); + return write_padded<align::right>( + out, specs, data.size, [=](reserve_iterator<OutputIt> it) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast<Char>(p & 0xff); + it = detail::fill_n(it, data.padding, static_cast<Char>('0')); + return write_digits(it); + }); +} + +template <typename OutputIt, typename UInt, typename Char> +bool write_int_localized(OutputIt& out, UInt value, unsigned prefix, + const basic_format_specs<Char>& specs, + locale_ref loc) { + static_assert(std::is_same<uint64_or_128_t<UInt>, UInt>::value, ""); + const auto sep_size = 1; + std::string groups = grouping<Char>(loc); + if (groups.empty()) return false; + auto sep = thousands_sep<Char>(loc); + if (!sep) return false; + int num_digits = count_digits(value); + int size = num_digits, n = num_digits; + std::string::const_iterator group = groups.cbegin(); + while (group != groups.cend() && n > *group && *group > 0 && + *group != max_value<char>()) { + size += sep_size; + n -= *group; + ++group; + } + if (group == groups.cend()) size += sep_size * ((n - 1) / groups.back()); + char digits[40]; + format_decimal(digits, value, num_digits); + basic_memory_buffer<Char> buffer; + if (prefix != 0) ++size; + const auto usize = to_unsigned(size); + buffer.resize(usize); + basic_string_view<Char> s(&sep, sep_size); + // Index of a decimal digit with the least significant digit having index 0. + int digit_index = 0; + group = groups.cbegin(); + auto p = buffer.data() + size - 1; + for (int i = num_digits - 1; i > 0; --i) { + *p-- = static_cast<Char>(digits[i]); + if (*group <= 0 || ++digit_index % *group != 0 || + *group == max_value<char>()) + continue; + if (group + 1 != groups.cend()) { + digit_index = 0; + ++group; + } + std::uninitialized_copy(s.data(), s.data() + s.size(), + make_checked(p, s.size())); + p -= s.size(); + } + *p-- = static_cast<Char>(*digits); + if (prefix != 0) *p = static_cast<Char>(prefix); + auto data = buffer.data(); + out = write_padded<align::right>( + out, specs, usize, usize, [=](reserve_iterator<OutputIt> it) { + return copy_str<Char>(data, data + size, it); + }); + return true; +} + +FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) { + prefix |= prefix != 0 ? value << 8 : value; + prefix += (1u + (value > 0xff ? 1 : 0)) << 24; +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && !std::is_same<T, bool>::value)> +FMT_CONSTEXPR FMT_INLINE OutputIt +write_int(OutputIt out, T value, const basic_format_specs<Char>& specs, + locale_ref loc) { + auto prefix = 0u; + auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value); + if (is_negative(value)) { + prefix = 0x01000000 | '-'; + abs_value = 0 - abs_value; + } else { + prefix = data::prefixes[specs.sign]; + } + auto utype = static_cast<unsigned>(specs.type); + switch (specs.type) { + case 0: + case 'd': { + if (specs.localized && + write_int_localized(out, static_cast<uint64_or_128_t<T>>(abs_value), + prefix, specs, loc)) { + return out; + } + auto num_digits = count_digits(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) { + return format_decimal<Char>(it, abs_value, num_digits).end; + }); + } + case 'x': + case 'X': { + if (specs.alt) prefix_append(prefix, (utype << 8) | '0'); + bool upper = specs.type != 'x'; + int num_digits = count_digits<4>(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) { + return format_uint<4, Char>(it, abs_value, num_digits, upper); + }); + } + case 'b': + case 'B': { + if (specs.alt) prefix_append(prefix, (utype << 8) | '0'); + int num_digits = count_digits<1>(abs_value); + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator<OutputIt> it) { + return format_uint<1, Char>(it, abs_value, num_digits); + }); + } + case 'o': { + int num_digits = count_digits<3>(abs_value); + if (specs.alt && specs.precision <= num_digits && abs_value != 0) { + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + prefix_append(prefix, '0'); + } + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator<OutputIt> it) { + return format_uint<3, Char>(it, abs_value, num_digits); + }); + } + case 'c': + return write_char(out, static_cast<Char>(abs_value), specs); + default: + FMT_THROW(format_error("invalid type specifier")); + } + return out; +} +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + std::is_same<OutputIt, buffer_appender<Char>>::value)> +FMT_CONSTEXPR OutputIt write(OutputIt out, T value, + const basic_format_specs<Char>& specs, + locale_ref loc) { + return write_int(out, value, specs, loc); +} +// An inlined version of write used in format string compilation. +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + !std::is_same<OutputIt, buffer_appender<Char>>::value)> +FMT_CONSTEXPR FMT_INLINE OutputIt write(OutputIt out, T value, + const basic_format_specs<Char>& specs, + locale_ref loc) { + return write_int(out, value, specs, loc); +} + +template <typename OutputIt, typename StrChar, typename Char> +FMT_CONSTEXPR OutputIt write(OutputIt out, basic_string_view<StrChar> s, + const basic_format_specs<Char>& specs) { + auto data = s.data(); + auto size = s.size(); + if (specs.precision >= 0 && to_unsigned(specs.precision) < size) + size = code_point_index(s, to_unsigned(specs.precision)); + auto width = specs.width != 0 + ? compute_width(basic_string_view<StrChar>(data, size)) + : 0; + return write_padded(out, specs, size, width, + [=](reserve_iterator<OutputIt> it) { + return copy_str<Char>(data, data + size, it); + }); +} +template <typename Char, typename OutputIt> +FMT_CONSTEXPR OutputIt write(OutputIt out, + basic_string_view<type_identity_t<Char>> s, + const basic_format_specs<Char>& specs, + locale_ref) { + return write(out, s, specs); // Adapt write to formatter::format. +} + +template <typename Char, typename OutputIt> +OutputIt write_nonfinite(OutputIt out, bool isinf, + const basic_format_specs<Char>& specs, + const float_specs& fspecs) { + auto str = + isinf ? (fspecs.upper ? "INF" : "inf") : (fspecs.upper ? "NAN" : "nan"); + constexpr size_t str_size = 3; + auto sign = fspecs.sign; + auto size = str_size + (sign ? 1 : 0); + return write_padded(out, specs, size, [=](reserve_iterator<OutputIt> it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + return copy_str<Char>(str, str + str_size, it); + }); +} + +// A decimal floating-point number significand * pow(10, exp). +struct big_decimal_fp { + const char* significand; + int significand_size; + int exponent; +}; + +inline int get_significand_size(const big_decimal_fp& fp) { + return fp.significand_size; +} +template <typename T> +inline int get_significand_size(const dragonbox::decimal_fp<T>& fp) { + return count_digits(fp.significand); +} + +template <typename Char, typename OutputIt> +inline OutputIt write_significand(OutputIt out, const char* significand, + int& significand_size) { + return copy_str<Char>(significand, significand + significand_size, out); +} +template <typename Char, typename OutputIt, typename UInt> +inline OutputIt write_significand(OutputIt out, UInt significand, + int significand_size) { + return format_decimal<Char>(out, significand, significand_size).end; +} + +template <typename Char, typename UInt, + FMT_ENABLE_IF(std::is_integral<UInt>::value)> +inline Char* write_significand(Char* out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) { + if (!decimal_point) + return format_decimal(out, significand, significand_size).end; + auto end = format_decimal(out + 1, significand, significand_size).end; + if (integral_size == 1) { + out[0] = out[1]; + } else { + std::uninitialized_copy_n(out + 1, integral_size, + make_checked(out, to_unsigned(integral_size))); + } + out[integral_size] = decimal_point; + return end; +} + +template <typename OutputIt, typename UInt, typename Char, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<OutputIt>>::value)> +inline OutputIt write_significand(OutputIt out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) { + // Buffer is large enough to hold digits (digits10 + 1) and a decimal point. + Char buffer[digits10<UInt>() + 2]; + auto end = write_significand(buffer, significand, significand_size, + integral_size, decimal_point); + return detail::copy_str<Char>(buffer, end, out); +} + +template <typename OutputIt, typename Char> +inline OutputIt write_significand(OutputIt out, const char* significand, + int significand_size, int integral_size, + Char decimal_point) { + out = detail::copy_str<Char>(significand, significand + integral_size, out); + if (!decimal_point) return out; + *out++ = decimal_point; + return detail::copy_str<Char>(significand + integral_size, + significand + significand_size, out); +} + +template <typename OutputIt, typename DecimalFP, typename Char> +OutputIt write_float(OutputIt out, const DecimalFP& fp, + const basic_format_specs<Char>& specs, float_specs fspecs, + Char decimal_point) { + auto significand = fp.significand; + int significand_size = get_significand_size(fp); + static const Char zero = static_cast<Char>('0'); + auto sign = fspecs.sign; + size_t size = to_unsigned(significand_size) + (sign ? 1 : 0); + using iterator = reserve_iterator<OutputIt>; + + int output_exp = fp.exponent + significand_size - 1; + auto use_exp_format = [=]() { + if (fspecs.format == float_format::exp) return true; + if (fspecs.format != float_format::general) return false; + // Use the fixed notation if the exponent is in [exp_lower, exp_upper), + // e.g. 0.0001 instead of 1e-04. Otherwise use the exponent notation. + const int exp_lower = -4, exp_upper = 16; + return output_exp < exp_lower || + output_exp >= (fspecs.precision > 0 ? fspecs.precision : exp_upper); + }; + if (use_exp_format()) { + int num_zeros = 0; + if (fspecs.showpoint) { + num_zeros = fspecs.precision - significand_size; + if (num_zeros < 0) num_zeros = 0; + size += to_unsigned(num_zeros); + } else if (significand_size == 1) { + decimal_point = Char(); + } + auto abs_output_exp = output_exp >= 0 ? output_exp : -output_exp; + int exp_digits = 2; + if (abs_output_exp >= 100) exp_digits = abs_output_exp >= 1000 ? 4 : 3; + + size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits); + char exp_char = fspecs.upper ? 'E' : 'e'; + auto write = [=](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + // Insert a decimal point after the first digit and add an exponent. + it = write_significand(it, significand, significand_size, 1, + decimal_point); + if (num_zeros > 0) it = detail::fill_n(it, num_zeros, zero); + *it++ = static_cast<Char>(exp_char); + return write_exponent<Char>(output_exp, it); + }; + return specs.width > 0 ? write_padded<align::right>(out, specs, size, write) + : base_iterator(out, write(reserve(out, size))); + } + + int exp = fp.exponent + significand_size; + if (fp.exponent >= 0) { + // 1234e5 -> 123400000[.0+] + size += to_unsigned(fp.exponent); + int num_zeros = fspecs.precision - exp; +#ifdef FMT_FUZZ + if (num_zeros > 5000) + throw std::runtime_error("fuzz mode - avoiding excessive cpu use"); +#endif + if (fspecs.showpoint) { + if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1; + if (num_zeros > 0) size += to_unsigned(num_zeros) + 1; + } + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + it = write_significand<Char>(it, significand, significand_size); + it = detail::fill_n(it, fp.exponent, zero); + if (!fspecs.showpoint) return it; + *it++ = decimal_point; + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } else if (exp > 0) { + // 1234e-2 -> 12.34[0+] + int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0; + size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + it = write_significand(it, significand, significand_size, exp, + decimal_point); + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } + // 1234e-6 -> 0.001234 + int num_zeros = -exp; + if (significand_size == 0 && fspecs.precision >= 0 && + fspecs.precision < num_zeros) { + num_zeros = fspecs.precision; + } + bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint; + size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + *it++ = zero; + if (!pointy) return it; + *it++ = decimal_point; + it = detail::fill_n(it, num_zeros, zero); + return write_significand<Char>(it, significand, significand_size); + }); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_floating_point<T>::value)> +OutputIt write(OutputIt out, T value, basic_format_specs<Char> specs, + locale_ref loc = {}) { + if (const_check(!is_supported_floating_point(value))) return out; + float_specs fspecs = parse_float_type_spec(specs); + fspecs.sign = specs.sign; + if (std::signbit(value)) { // value < 0 is false for NaN so use signbit. + fspecs.sign = sign::minus; + value = -value; + } else if (fspecs.sign == sign::minus) { + fspecs.sign = sign::none; + } + + if (!std::isfinite(value)) + return write_nonfinite(out, std::isinf(value), specs, fspecs); + + if (specs.align == align::numeric && fspecs.sign) { + auto it = reserve(out, 1); + *it++ = static_cast<Char>(data::signs[fspecs.sign]); + out = base_iterator(out, it); + fspecs.sign = sign::none; + if (specs.width != 0) --specs.width; + } + + memory_buffer buffer; + if (fspecs.format == float_format::hex) { + if (fspecs.sign) buffer.push_back(data::signs[fspecs.sign]); + snprintf_float(promote_float(value), specs.precision, fspecs, buffer); + return write_bytes(out, {buffer.data(), buffer.size()}, specs); + } + int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6; + if (fspecs.format == float_format::exp) { + if (precision == max_value<int>()) + FMT_THROW(format_error("number is too big")); + else + ++precision; + } + if (const_check(std::is_same<T, float>())) fspecs.binary32 = true; + fspecs.use_grisu = is_fast_float<T>(); + int exp = format_float(promote_float(value), precision, fspecs, buffer); + fspecs.precision = precision; + Char point = + fspecs.locale ? decimal_point<Char>(loc) : static_cast<Char>('.'); + auto fp = big_decimal_fp{buffer.data(), static_cast<int>(buffer.size()), exp}; + return write_float(out, fp, specs, fspecs, point); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_fast_float<T>::value)> +OutputIt write(OutputIt out, T value) { + if (const_check(!is_supported_floating_point(value))) return out; + + using floaty = conditional_t<std::is_same<T, long double>::value, double, T>; + using uint = typename dragonbox::float_info<floaty>::carrier_uint; + auto bits = bit_cast<uint>(value); + + auto fspecs = float_specs(); + auto sign_bit = bits & (uint(1) << (num_bits<uint>() - 1)); + if (sign_bit != 0) { + fspecs.sign = sign::minus; + value = -value; + } + + static const auto specs = basic_format_specs<Char>(); + uint mask = exponent_mask<floaty>(); + if ((bits & mask) == mask) + return write_nonfinite(out, std::isinf(value), specs, fspecs); + + auto dec = dragonbox::to_decimal(static_cast<floaty>(value)); + return write_float(out, dec, specs, fspecs, static_cast<Char>('.')); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_floating_point<T>::value && + !is_fast_float<T>::value)> +inline OutputIt write(OutputIt out, T value) { + return write(out, value, basic_format_specs<Char>()); +} + +template <typename Char, typename OutputIt, typename UIntPtr> +OutputIt write_ptr(OutputIt out, UIntPtr value, + const basic_format_specs<Char>* specs) { + int num_digits = count_digits<4>(value); + auto size = to_unsigned(num_digits) + size_t(2); + auto write = [=](reserve_iterator<OutputIt> it) { + *it++ = static_cast<Char>('0'); + *it++ = static_cast<Char>('x'); + return format_uint<4, Char>(it, value, num_digits); + }; + return specs ? write_padded<align::right>(out, *specs, size, write) + : base_iterator(out, write(reserve(out, size))); +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, monostate) { + FMT_ASSERT(false, ""); + return out; +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +OutputIt write(OutputIt out, string_view value) { + auto it = reserve(out, value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR OutputIt write(OutputIt out, basic_string_view<Char> value) { + auto it = reserve(out, value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_string<T>::value)> +constexpr OutputIt write(OutputIt out, const T& value) { + return write<Char>(out, to_string_view(value)); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + !std::is_same<T, Char>::value)> +FMT_CONSTEXPR OutputIt write(OutputIt out, T value) { + auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value); + bool negative = is_negative(value); + // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer. + if (negative) abs_value = ~abs_value + 1; + int num_digits = count_digits(abs_value); + auto size = (negative ? 1 : 0) + static_cast<size_t>(num_digits); + auto it = reserve(out, size); + if (auto ptr = to_pointer<Char>(it, size)) { + if (negative) *ptr++ = static_cast<Char>('-'); + format_decimal<Char>(ptr, abs_value, num_digits); + return out; + } + if (negative) *it++ = static_cast<Char>('-'); + it = format_decimal<Char>(it, abs_value, num_digits).end; + return base_iterator(out, it); +} + +// FMT_ENABLE_IF() condition separated to workaround MSVC bug +template < + typename Char, typename OutputIt, typename T, + bool check = + std::is_enum<T>::value && !std::is_same<T, Char>::value && + mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value != + type::custom_type, + FMT_ENABLE_IF(check)> +FMT_CONSTEXPR OutputIt write(OutputIt out, T value) { + return write<Char>( + out, static_cast<typename std::underlying_type<T>::type>(value)); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_same<T, bool>::value)> +FMT_CONSTEXPR OutputIt write(OutputIt out, T value, + const basic_format_specs<Char>& specs = {}, + locale_ref = {}) { + return specs.type && specs.type != 's' + ? write(out, value ? 1 : 0, specs, {}) + : write(out, string_view(value ? "true" : "false"), specs); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR OutputIt write(OutputIt out, Char value) { + auto it = reserve(out, 1); + *it++ = value; + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR_CHAR_TRAITS OutputIt write(OutputIt out, const Char* value) { + if (!value) { + FMT_THROW(format_error("string pointer is null")); + } else { + auto length = std::char_traits<Char>::length(value); + out = write(out, basic_string_view<Char>(value, length)); + } + return out; +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_same<T, void>::value)> +OutputIt write(OutputIt out, const T* value, + const basic_format_specs<Char>& specs = {}, locale_ref = {}) { + return write_ptr<Char>(out, to_uintptr(value), &specs); +} + +template <typename Char, typename OutputIt, typename T> +auto write(OutputIt out, const T& value) -> typename std::enable_if< + mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value == + type::custom_type, + OutputIt>::type { + using context_type = basic_format_context<OutputIt, Char>; + using formatter_type = + conditional_t<has_formatter<T, context_type>::value, + typename context_type::template formatter_type<T>, + fallback_formatter<T, Char>>; + context_type ctx(out, {}, {}); + return formatter_type().format(value, ctx); +} + +// An argument visitor that formats the argument and writes it via the output +// iterator. It's a class and not a generic lambda for compatibility with C++11. +template <typename OutputIt, typename Char> struct default_arg_formatter { + using context = basic_format_context<OutputIt, Char>; + + OutputIt out; + basic_format_args<context> args; + locale_ref loc; + + template <typename T> OutputIt operator()(T value) { + return write<Char>(out, value); + } + + OutputIt operator()(typename basic_format_arg<context>::handle handle) { + basic_format_parse_context<Char> parse_ctx({}); + basic_format_context<OutputIt, Char> format_ctx(out, args, loc); + handle.format(parse_ctx, format_ctx); + return format_ctx.out(); + } +}; + +template <typename OutputIt, typename Char, + typename ErrorHandler = error_handler> +class arg_formatter_base { + public: + using iterator = OutputIt; + using char_type = Char; + using format_specs = basic_format_specs<Char>; + + private: + iterator out_; + const format_specs& specs_; + locale_ref locale_; + + // Attempts to reserve space for n extra characters in the output range. + // Returns a pointer to the reserved range or a reference to out_. + auto reserve(size_t n) -> decltype(detail::reserve(out_, n)) { + return detail::reserve(out_, n); + } + + void write(char value) { + auto&& it = reserve(1); + *it++ = value; + } + + template <typename Ch, FMT_ENABLE_IF(std::is_same<Ch, Char>::value)> + void write(Ch value) { + out_ = detail::write<Char>(out_, value); + } + + void write(string_view value) { + auto&& it = reserve(value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + } + void write(wstring_view value) { + static_assert(std::is_same<Char, wchar_t>::value, ""); + auto&& it = reserve(value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + } + + template <typename Ch> + void write(const Ch* s, size_t size, const format_specs& specs) { + auto width = + specs.width != 0 ? compute_width(basic_string_view<Ch>(s, size)) : 0; + out_ = write_padded(out_, specs, size, width, + [=](reserve_iterator<OutputIt> it) { + return copy_str<Char>(s, s + size, it); + }); + } + + template <typename Ch> + FMT_CONSTEXPR void write(basic_string_view<Ch> s, + const format_specs& specs = {}) { + out_ = detail::write(out_, s, specs); + } + + void write_pointer(const void* p) { + out_ = write_ptr<char_type>(out_, to_uintptr(p), &specs_); + } + + struct char_spec_handler : ErrorHandler { + arg_formatter_base& formatter; + Char value; + + constexpr char_spec_handler(arg_formatter_base& f, Char val) + : formatter(f), value(val) {} + + FMT_CONSTEXPR void on_int() { + // char is only formatted as int if there are specs. + formatter.out_ = detail::write(formatter.out_, static_cast<int>(value), + formatter.specs_, formatter.locale_); + } + FMT_CONSTEXPR void on_char() { + formatter.out_ = + detail::write<Char>(formatter.out_, value, formatter.specs_); + } + }; + + struct cstring_spec_handler : error_handler { + arg_formatter_base& formatter; + const Char* value; + + cstring_spec_handler(arg_formatter_base& f, const Char* val) + : formatter(f), value(val) {} + + void on_string() { formatter.write(value); } + void on_pointer() { formatter.write_pointer(value); } + }; + + protected: + iterator out() { return out_; } + const format_specs& specs() { return specs_; } + + FMT_CONSTEXPR void write(bool value) { + write(string_view(value ? "true" : "false"), specs_); + } + + void write(const Char* value) { + if (value) + write(basic_string_view<char_type>(value), specs_); + else + FMT_THROW(format_error("string pointer is null")); + } + + public: + constexpr arg_formatter_base(OutputIt out, const format_specs& s, + locale_ref loc) + : out_(out), specs_(s), locale_(loc) {} + + iterator operator()(monostate) { + FMT_ASSERT(false, "invalid argument type"); + return out_; + } + + template <typename T, FMT_ENABLE_IF(is_integral<T>::value)> + FMT_CONSTEXPR FMT_INLINE iterator operator()(T value) { + return out_ = detail::write(out_, value, specs_, locale_); + } + + FMT_CONSTEXPR iterator operator()(Char value) { + handle_char_specs(specs_, + char_spec_handler(*this, static_cast<Char>(value))); + return out_; + } + + FMT_CONSTEXPR iterator operator()(bool value) { + if (specs_.type && specs_.type != 's') return (*this)(value ? 1 : 0); + write(value != 0); + return out_; + } + + template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> + iterator operator()(T value) { + if (const_check(is_supported_floating_point(value))) + out_ = detail::write(out_, value, specs_, locale_); + else + FMT_ASSERT(false, "unsupported float argument type"); + return out_; + } + + iterator operator()(const Char* value) { + handle_cstring_type_spec(specs_.type, cstring_spec_handler(*this, value)); + return out_; + } + + FMT_CONSTEXPR iterator operator()(basic_string_view<Char> value) { + check_string_type_spec(specs_.type, error_handler()); + write(value, specs_); + return out_; + } + + iterator operator()(const void* value) { + check_pointer_type_spec(specs_.type, error_handler()); + write_pointer(value); + return out_; + } +}; + +/** The default argument formatter. */ +template <typename OutputIt, typename Char> +class arg_formatter : public arg_formatter_base<OutputIt, Char> { + private: + using char_type = Char; + using base = arg_formatter_base<OutputIt, Char>; + using context_type = basic_format_context<OutputIt, Char>; + + context_type& ctx_; + + public: + using iterator = typename base::iterator; + using format_specs = typename base::format_specs; + + /** + \rst + Constructs an argument formatter object. + *ctx* is a reference to the formatting context, + *specs* contains format specifier information for standard argument types. + \endrst + */ + constexpr explicit arg_formatter(context_type& ctx, const format_specs& specs) + : base(ctx.out(), specs, ctx.locale()), ctx_(ctx) {} + + using base::operator(); + + iterator operator()(typename basic_format_arg<context_type>::handle) { + // User-defined types are handled separately because they require access to + // the parse context. + return ctx_.out(); + } +}; + +template <typename Context> class custom_formatter { + private: + using char_type = typename Context::char_type; + + basic_format_parse_context<char_type>& parse_ctx_; + Context& ctx_; + + public: + explicit custom_formatter(basic_format_parse_context<char_type>& parse_ctx, + Context& ctx) + : parse_ctx_(parse_ctx), ctx_(ctx) {} + + void operator()(typename basic_format_arg<Context>::handle h) const { + h.format(parse_ctx_, ctx_); + } + + template <typename T> void operator()(T) const {} +}; + +template <typename T> +using is_integer = + bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value && + !std::is_same<T, char>::value && + !std::is_same<T, wchar_t>::value>; + +template <typename ErrorHandler> class width_checker { + public: + explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T value) { + if (is_negative(value)) handler_.on_error("negative width"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T) { + handler_.on_error("width is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +template <typename ErrorHandler> class precision_checker { + public: + explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T value) { + if (is_negative(value)) handler_.on_error("negative precision"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T) { + handler_.on_error("precision is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +template <typename ErrorHandler> class numeric_specs_checker { + public: + FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, detail::type arg_type) + : error_handler_(eh), arg_type_(arg_type) {} + + FMT_CONSTEXPR void require_numeric_argument() { + if (!is_arithmetic_type(arg_type_)) + error_handler_.on_error("format specifier requires numeric argument"); + } + + FMT_CONSTEXPR void check_sign() { + require_numeric_argument(); + if (is_integral_type(arg_type_) && arg_type_ != type::int_type && + arg_type_ != type::long_long_type && arg_type_ != type::char_type) { + error_handler_.on_error("format specifier requires signed argument"); + } + } + + FMT_CONSTEXPR void check_precision() { + if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type) + error_handler_.on_error("precision not allowed for this argument type"); + } + + private: + ErrorHandler& error_handler_; + detail::type arg_type_; +}; + +// A format specifier handler that checks if specifiers are consistent with the +// argument type. +template <typename Handler> class specs_checker : public Handler { + private: + numeric_specs_checker<Handler> checker_; + + // Suppress an MSVC warning about using this in initializer list. + FMT_CONSTEXPR Handler& error_handler() { return *this; } + + public: + FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type) + : Handler(handler), checker_(error_handler(), arg_type) {} + + FMT_CONSTEXPR specs_checker(const specs_checker& other) + : Handler(other), checker_(error_handler(), other.arg_type_) {} + + FMT_CONSTEXPR void on_align(align_t align) { + if (align == align::numeric) checker_.require_numeric_argument(); + Handler::on_align(align); + } + + FMT_CONSTEXPR void on_plus() { + checker_.check_sign(); + Handler::on_plus(); + } + + FMT_CONSTEXPR void on_minus() { + checker_.check_sign(); + Handler::on_minus(); + } + + FMT_CONSTEXPR void on_space() { + checker_.check_sign(); + Handler::on_space(); + } + + FMT_CONSTEXPR void on_hash() { + checker_.require_numeric_argument(); + Handler::on_hash(); + } + + FMT_CONSTEXPR void on_localized() { + checker_.require_numeric_argument(); + Handler::on_localized(); + } + + FMT_CONSTEXPR void on_zero() { + checker_.require_numeric_argument(); + Handler::on_zero(); + } + + FMT_CONSTEXPR void end_precision() { checker_.check_precision(); } +}; + +template <template <typename> class Handler, typename FormatArg, + typename ErrorHandler> +FMT_CONSTEXPR int get_dynamic_spec(FormatArg arg, ErrorHandler eh) { + unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg); + if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big"); + return static_cast<int>(value); +} + +template <typename Context, typename ID> +FMT_CONSTEXPR typename Context::format_arg get_arg(Context& ctx, ID id) { + auto arg = ctx.arg(id); + if (!arg) ctx.on_error("argument not found"); + return arg; +} + +// The standard format specifier handler with checking. +template <typename ParseContext, typename Context> +class specs_handler : public specs_setter<typename Context::char_type> { + public: + using char_type = typename Context::char_type; + + FMT_CONSTEXPR specs_handler(basic_format_specs<char_type>& specs, + ParseContext& parse_ctx, Context& ctx) + : specs_setter<char_type>(specs), + parse_context_(parse_ctx), + context_(ctx) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + this->specs_.width = get_dynamic_spec<width_checker>( + get_arg(arg_id), context_.error_handler()); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + this->specs_.precision = get_dynamic_spec<precision_checker>( + get_arg(arg_id), context_.error_handler()); + } + + void on_error(const char* message) { context_.on_error(message); } + + private: + // This is only needed for compatibility with gcc 4.4. + using format_arg = typename Context::format_arg; + + FMT_CONSTEXPR format_arg get_arg(auto_id) { + return detail::get_arg(context_, parse_context_.next_arg_id()); + } + + FMT_CONSTEXPR format_arg get_arg(int arg_id) { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + FMT_CONSTEXPR format_arg get_arg(basic_string_view<char_type> arg_id) { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + ParseContext& parse_context_; + Context& context_; +}; + +template <typename OutputIt, typename Char, typename Context> +struct format_handler : detail::error_handler { + basic_format_parse_context<Char> parse_context; + Context context; + + format_handler(OutputIt out, basic_string_view<Char> str, + basic_format_args<Context> format_args, detail::locale_ref loc) + : parse_context(str), context(out, format_args, loc) {} + + void on_text(const Char* begin, const Char* end) { + auto text = basic_string_view<Char>(begin, to_unsigned(end - begin)); + context.advance_to(write<Char>(context.out(), text)); + } + + int on_arg_id() { return parse_context.next_arg_id(); } + int on_arg_id(int id) { return parse_context.check_arg_id(id), id; } + int on_arg_id(basic_string_view<Char> id) { + int arg_id = context.arg_id(id); + if (arg_id < 0) on_error("argument not found"); + return arg_id; + } + + FMT_INLINE void on_replacement_field(int id, const Char*) { + auto arg = get_arg(context, id); + context.advance_to(visit_format_arg( + default_arg_formatter<OutputIt, Char>{context.out(), context.args(), + context.locale()}, + arg)); + } + + const Char* on_format_specs(int id, const Char* begin, const Char* end) { + auto arg = get_arg(context, id); + if (arg.type() == type::custom_type) { + advance_to(parse_context, begin); + visit_format_arg(custom_formatter<Context>(parse_context, context), arg); + return parse_context.begin(); + } + auto specs = basic_format_specs<Char>(); + using parse_context_t = basic_format_parse_context<Char>; + specs_checker<specs_handler<parse_context_t, Context>> handler( + specs_handler<parse_context_t, Context>(specs, parse_context, context), + arg.type()); + begin = parse_format_specs(begin, end, handler); + if (begin == end || *begin != '}') on_error("missing '}' in format string"); + context.advance_to( + visit_format_arg(arg_formatter<OutputIt, Char>(context, specs), arg)); + return begin; + } +}; + +template <template <typename> class Handler, typename Context> +FMT_CONSTEXPR void handle_dynamic_spec(int& value, + arg_ref<typename Context::char_type> ref, + Context& ctx) { + switch (ref.kind) { + case arg_id_kind::none: + break; + case arg_id_kind::index: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index), + ctx.error_handler()); + break; + case arg_id_kind::name: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name), + ctx.error_handler()); + break; + } +} + +using format_func = void (*)(detail::buffer<char>&, int, const char*); + +FMT_API void format_error_code(buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT; + +FMT_API void report_error(format_func func, int error_code, + const char* message) FMT_NOEXCEPT; + +FMT_END_DETAIL_NAMESPACE + +template <typename OutputIt, typename Char> +using arg_formatter FMT_DEPRECATED_ALIAS = + detail::arg_formatter<OutputIt, Char>; + +FMT_API std::system_error vsystem_error(int error_code, string_view format_str, + format_args args); + +/** + \rst + Constructs :class:`std::system_error` with a message formatted with + ``fmt::format(message, args...)``. + *error_code* is a system error code as given by ``errno``. + + **Example**:: + + // This throws std::system_error with the description + // cannot open file 'madeup': No such file or directory + // or similar (system message may vary). + const char* filename = "madeup"; + std::FILE* file = std::fopen(filename, "r"); + if (!file) + throw fmt::system_error(errno, "cannot open file '{}'", filename); + \endrst +*/ +template <typename... Args> +std::system_error system_error(int error_code, string_view message, + const Args&... args) { + return vsystem_error(error_code, message, make_format_args(args...)); +} + +/** + \rst + Formats an error message for an error returned by an operating system or a + language runtime, for example a file opening error, and writes it to *out*. + The format is the same as the one used by ``std::system_error(ec, message)`` + where ``ec`` is ``std::error_code(error_code, std::generic_category()})``. + It is implementation-defined but normally looks like: + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the passed message and *<system-message>* is the system + message corresponding to the error code. + *error_code* is a system error code as given by ``errno``. + \endrst + */ +FMT_API void format_system_error(detail::buffer<char>& out, int error_code, + const char* message) FMT_NOEXCEPT; + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, + const char* message) FMT_NOEXCEPT; + +/** Fast integer formatter. */ +class format_int { + private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum { buffer_size = std::numeric_limits<unsigned long long>::digits10 + 3 }; + mutable char buffer_[buffer_size]; + char* str_; + + template <typename UInt> char* format_unsigned(UInt value) { + auto n = static_cast<detail::uint32_or_64_or_128_t<UInt>>(value); + return detail::format_decimal(buffer_, n, buffer_size - 1).begin; + } + + template <typename Int> char* format_signed(Int value) { + auto abs_value = static_cast<detail::uint32_or_64_or_128_t<Int>>(value); + bool negative = value < 0; + if (negative) abs_value = 0 - abs_value; + auto begin = format_unsigned(abs_value); + if (negative) *--begin = '-'; + return begin; + } + + public: + explicit format_int(int value) : str_(format_signed(value)) {} + explicit format_int(long value) : str_(format_signed(value)) {} + explicit format_int(long long value) : str_(format_signed(value)) {} + explicit format_int(unsigned value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long long value) + : str_(format_unsigned(value)) {} + + /** Returns the number of characters written to the output buffer. */ + size_t size() const { + return detail::to_unsigned(buffer_ - str_ + buffer_size - 1); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + const char* data() const { return str_; } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + const char* c_str() const { + buffer_[buffer_size - 1] = '\0'; + return str_; + } + + /** + \rst + Returns the content of the output buffer as an ``std::string``. + \endrst + */ + std::string str() const { return std::string(str_, size()); } +}; + +// A formatter specialization for the core types corresponding to detail::type +// constants. +template <typename T, typename Char> +struct formatter<T, Char, + enable_if_t<detail::type_constant<T, Char>::value != + detail::type::custom_type>> { + FMT_CONSTEXPR formatter() = default; + + // Parses format specifiers stopping either at the end of the range or at the + // terminating '}'. + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin == end) return begin; + using handler_type = detail::dynamic_specs_handler<ParseContext>; + auto type = detail::type_constant<T, Char>::value; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + type); + auto it = detail::parse_format_specs(begin, end, handler); + auto eh = ctx.error_handler(); + switch (type) { + case detail::type::none_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case detail::type::bool_type: + if (!specs_.type || specs_.type == 's') break; + FMT_FALLTHROUGH; + case detail::type::int_type: + case detail::type::uint_type: + case detail::type::long_long_type: + case detail::type::ulong_long_type: + case detail::type::int128_type: + case detail::type::uint128_type: + detail::check_int_type_spec(specs_.type, eh); + break; + case detail::type::char_type: + detail::handle_char_specs( + specs_, detail::char_specs_checker<decltype(eh)>(specs_.type, eh)); + break; + case detail::type::float_type: + if (detail::const_check(FMT_USE_FLOAT)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "float support disabled"); + break; + case detail::type::double_type: + if (detail::const_check(FMT_USE_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "double support disabled"); + break; + case detail::type::long_double_type: + if (detail::const_check(FMT_USE_LONG_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "long double support disabled"); + break; + case detail::type::cstring_type: + detail::handle_cstring_type_spec( + specs_.type, detail::cstring_type_checker<decltype(eh)>(eh)); + break; + case detail::type::string_type: + detail::check_string_type_spec(specs_.type, eh); + break; + case detail::type::pointer_type: + detail::check_pointer_type_spec(specs_.type, eh); + break; + case detail::type::custom_type: + // Custom format specifiers should be checked in parse functions of + // formatter specializations. + break; + } + return it; + } + + template <typename FormatContext> + FMT_CONSTEXPR FMT_INLINE auto format(const T& val, FormatContext& ctx) const + -> decltype(ctx.out()) { + if (specs_.width_ref.kind != detail::arg_id_kind::none || + specs_.precision_ref.kind != detail::arg_id_kind::none) { + auto specs = specs_; + detail::handle_dynamic_spec<detail::width_checker>(specs.width, + specs.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs.precision, specs.precision_ref, ctx); + return detail::write<Char>(ctx.out(), val, specs, ctx.locale()); + } + return detail::write<Char>(ctx.out(), val, specs_, ctx.locale()); + } + + private: + detail::dynamic_format_specs<Char> specs_; +}; + +#define FMT_FORMAT_AS(Type, Base) \ + template <typename Char> \ + struct formatter<Type, Char> : formatter<Base, Char> { \ + template <typename FormatContext> \ + auto format(Type const& val, FormatContext& ctx) const \ + -> decltype(ctx.out()) { \ + return formatter<Base, Char>::format(static_cast<Base>(val), ctx); \ + } \ + } + +FMT_FORMAT_AS(signed char, int); +FMT_FORMAT_AS(unsigned char, unsigned); +FMT_FORMAT_AS(short, int); +FMT_FORMAT_AS(unsigned short, unsigned); +FMT_FORMAT_AS(long, long long); +FMT_FORMAT_AS(unsigned long, unsigned long long); +FMT_FORMAT_AS(Char*, const Char*); +FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>); +FMT_FORMAT_AS(std::nullptr_t, const void*); +FMT_FORMAT_AS(detail::std_string_view<Char>, basic_string_view<Char>); + +template <typename Char> +struct formatter<void*, Char> : formatter<const void*, Char> { + template <typename FormatContext> + auto format(void* val, FormatContext& ctx) const -> decltype(ctx.out()) { + return formatter<const void*, Char>::format(val, ctx); + } +}; + +template <typename Char, size_t N> +struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> { + template <typename FormatContext> + FMT_CONSTEXPR auto format(const Char* val, FormatContext& ctx) const + -> decltype(ctx.out()) { + return formatter<basic_string_view<Char>, Char>::format(val, ctx); + } +}; + +// A formatter for types known only at run time such as variant alternatives. +// +// Usage: +// using variant = std::variant<int, std::string>; +// template <> +// struct formatter<variant>: dynamic_formatter<> { +// auto format(const variant& v, format_context& ctx) { +// return visit([&](const auto& val) { +// return dynamic_formatter<>::format(val, ctx); +// }, v); +// } +// }; +template <typename Char = char> class dynamic_formatter { + private: + struct null_handler : detail::error_handler { + void on_align(align_t) {} + void on_plus() {} + void on_minus() {} + void on_space() {} + void on_hash() {} + }; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + format_str_ = ctx.begin(); + // Checks are deferred to formatting time when the argument type is known. + detail::dynamic_specs_handler<ParseContext> handler(specs_, ctx); + return detail::parse_format_specs(ctx.begin(), ctx.end(), handler); + } + + template <typename T, typename FormatContext> + auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { + handle_specs(ctx); + detail::specs_checker<null_handler> checker( + null_handler(), detail::mapped_type_constant<T, FormatContext>::value); + checker.on_align(specs_.align); + switch (specs_.sign) { + case sign::none: + break; + case sign::plus: + checker.on_plus(); + break; + case sign::minus: + checker.on_minus(); + break; + case sign::space: + checker.on_space(); + break; + } + if (specs_.alt) checker.on_hash(); + if (specs_.precision >= 0) checker.end_precision(); + using af = detail::arg_formatter<typename FormatContext::iterator, + typename FormatContext::char_type>; + visit_format_arg(af(ctx, specs_), detail::make_arg<FormatContext>(val)); + return ctx.out(); + } + + private: + template <typename Context> void handle_specs(Context& ctx) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + } + + detail::dynamic_format_specs<Char> specs_; + const Char* format_str_; +}; + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void advance_to( + basic_format_parse_context<Char, ErrorHandler>& ctx, const Char* p) { + ctx.advance_to(ctx.begin() + (p - &*ctx.begin())); +} + +/** + \rst + Converts ``p`` to ``const void*`` for pointer formatting. + + **Example**:: + + auto s = fmt::format("{}", fmt::ptr(p)); + \endrst + */ +template <typename T> const void* ptr(T p) { + static_assert(std::is_pointer<T>::value, ""); + return detail::bit_cast<const void*>(p); +} +template <typename T> const void* ptr(const std::unique_ptr<T>& p) { + return p.get(); +} +template <typename T> const void* ptr(const std::shared_ptr<T>& p) { + return p.get(); +} + +class bytes { + private: + string_view data_; + friend struct formatter<bytes>; + + public: + explicit bytes(string_view data) : data_(data) {} +}; + +template <> struct formatter<bytes> { + private: + detail::dynamic_format_specs<char> specs_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + using handler_type = detail::dynamic_specs_handler<ParseContext>; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + detail::type::string_type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + detail::check_string_type_spec(specs_.type, ctx.error_handler()); + return it; + } + + template <typename FormatContext> + auto format(bytes b, FormatContext& ctx) -> decltype(ctx.out()) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + return detail::write_bytes(ctx.out(), b.data_, specs_); + } +}; + +template <typename It, typename Sentinel, typename Char> +struct arg_join : detail::view { + It begin; + Sentinel end; + basic_string_view<Char> sep; + + arg_join(It b, Sentinel e, basic_string_view<Char> s) + : begin(b), end(e), sep(s) {} +}; + +template <typename It, typename Sentinel, typename Char> +struct formatter<arg_join<It, Sentinel, Char>, Char> { + private: + using value_type = typename std::iterator_traits<It>::value_type; + using context = buffer_context<Char>; + using mapper = detail::arg_mapper<context>; + + template <typename T, FMT_ENABLE_IF(has_formatter<T, context>::value)> + static auto map(const T& value) -> const T& { + return value; + } + template <typename T, FMT_ENABLE_IF(!has_formatter<T, context>::value)> + static auto map(const T& value) -> decltype(mapper().map(value)) { + return mapper().map(value); + } + + using formatter_type = + conditional_t<is_formattable<value_type>::value, + formatter<remove_cvref_t<decltype( + map(std::declval<const value_type&>()))>, + Char>, + detail::fallback_formatter<value_type, Char>>; + + formatter_type value_formatter_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return value_formatter_.parse(ctx); + } + + template <typename FormatContext> + auto format(const arg_join<It, Sentinel, Char>& value, FormatContext& ctx) + -> decltype(ctx.out()) { + auto it = value.begin; + auto out = ctx.out(); + if (it != value.end) { + out = value_formatter_.format(map(*it++), ctx); + while (it != value.end) { + out = detail::copy_str<Char>(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + out = value_formatter_.format(map(*it++), ctx); + } + } + return out; + } +}; + +/** + Returns an object that formats the iterator range `[begin, end)` with elements + separated by `sep`. + */ +template <typename It, typename Sentinel> +arg_join<It, Sentinel, char> join(It begin, Sentinel end, string_view sep) { + return {begin, end, sep}; +} + +template <typename It, typename Sentinel> +arg_join<It, Sentinel, wchar_t> join(It begin, Sentinel end, wstring_view sep) { + return {begin, end, sep}; +} + +/** + \rst + Returns an object that formats `range` with elements separated by `sep`. + + **Example**:: + + std::vector<int> v = {1, 2, 3}; + fmt::print("{}", fmt::join(v, ", ")); + // Output: "1, 2, 3" + + ``fmt::join`` applies passed format specifiers to the range elements:: + + fmt::print("{:02}", fmt::join(v, ", ")); + // Output: "01, 02, 03" + \endrst + */ +template <typename Range> +arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, char> join( + Range&& range, string_view sep) { + return join(std::begin(range), std::end(range), sep); +} + +template <typename Range> +arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, wchar_t> join( + Range&& range, wstring_view sep) { + return join(std::begin(range), std::end(range), sep); +} + +/** + \rst + Converts *value* to ``std::string`` using the default format for type *T*. + + **Example**:: + + #include <fmt/format.h> + + std::string answer = fmt::to_string(42); + \endrst + */ +template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> +inline std::string to_string(const T& value) { + std::string result; + detail::write<char>(std::back_inserter(result), value); + return result; +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline std::string to_string(T value) { + // The buffer should be large enough to store the number including the sign or + // "false" for bool. + constexpr int max_size = detail::digits10<T>() + 2; + char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5]; + char* begin = buffer; + return std::string(begin, detail::write<char>(begin, value)); +} + +/** + Converts *value* to ``std::wstring`` using the default format for type *T*. + */ +template <typename T> inline std::wstring to_wstring(const T& value) { + return format(FMT_STRING(L"{}"), value); +} + +template <typename Char, size_t SIZE> +std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE>& buf) { + auto size = buf.size(); + detail::assume(size < std::basic_string<Char>().max_size()); + return std::basic_string<Char>(buf.data(), size); +} + +FMT_MODULE_EXPORT_END + +template <typename Char> +void detail::vformat_to( + detail::buffer<Char>& buf, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args, + detail::locale_ref loc) { + using iterator = typename buffer_context<Char>::iterator; + auto out = buffer_appender<Char>(buf); + if (format_str.size() == 2 && equal2(format_str.data(), "{}")) { + auto arg = args.get(0); + if (!arg) error_handler().on_error("argument not found"); + visit_format_arg(default_arg_formatter<iterator, Char>{out, args, loc}, + arg); + return; + } + format_handler<iterator, Char, buffer_context<Char>> h(out, format_str, args, + loc); + parse_format_string<false>(format_str, h); +} + +#ifndef FMT_HEADER_ONLY +extern template void detail::vformat_to(detail::buffer<char>&, string_view, + basic_format_args<format_context>, + detail::locale_ref); +namespace detail { + +extern template FMT_API std::string grouping_impl<char>(locale_ref loc); +extern template FMT_API std::string grouping_impl<wchar_t>(locale_ref loc); +extern template FMT_API char thousands_sep_impl<char>(locale_ref loc); +extern template FMT_API wchar_t thousands_sep_impl<wchar_t>(locale_ref loc); +extern template FMT_API char decimal_point_impl(locale_ref loc); +extern template FMT_API wchar_t decimal_point_impl(locale_ref loc); +extern template int format_float<double>(double value, int precision, + float_specs specs, buffer<char>& buf); +extern template int format_float<long double>(long double value, int precision, + float_specs specs, + buffer<char>& buf); +int snprintf_float(float value, int precision, float_specs specs, + buffer<char>& buf) = delete; +extern template int snprintf_float<double>(double value, int precision, + float_specs specs, + buffer<char>& buf); +extern template int snprintf_float<long double>(long double value, + int precision, + float_specs specs, + buffer<char>& buf); +} // namespace detail +#endif + +FMT_MODULE_EXPORT_BEGIN + +template <typename S, typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_string<S>::value)> +inline void vformat_to( + detail::buffer<Char>& buf, const S& format_str, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args) { + return detail::vformat_to(buf, to_string_view(format_str), args); +} + +template <typename S, typename... Args, size_t SIZE = inline_buffer_size, + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> +inline typename buffer_context<Char>::iterator format_to( + basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + detail::vformat_to(buf, to_string_view(format_str), vargs); + return detail::buffer_appender<Char>(buf); +} + +template <typename OutputIt, typename Char = char> +using format_context_t = basic_format_context<OutputIt, Char>; + +template <typename OutputIt, typename Char = char> +using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>; + +template <typename OutputIt, typename Char = typename OutputIt::value_type> +using format_to_n_context FMT_DEPRECATED_ALIAS = buffer_context<Char>; + +template <typename OutputIt, typename Char = typename OutputIt::value_type> +using format_to_n_args FMT_DEPRECATED_ALIAS = + basic_format_args<buffer_context<Char>>; + +template <typename OutputIt, typename Char, typename... Args> +FMT_DEPRECATED format_arg_store<buffer_context<Char>, Args...> +make_format_to_n_args(const Args&... args) { + return format_arg_store<buffer_context<Char>, Args...>(args...); +} + +#if FMT_COMPILE_TIME_CHECKS +template <typename... Args> struct format_string { + string_view str; + + template <size_t N> consteval format_string(const char (&s)[N]) : str(s) { + if constexpr (detail::count_named_args<Args...>() == 0) { + using checker = detail::format_string_checker<char, detail::error_handler, + remove_cvref_t<Args>...>; + detail::parse_format_string<true>(string_view(s, N), checker(s, {})); + } + } + + template <typename T, + FMT_ENABLE_IF(std::is_constructible_v<string_view, const T&>)> + format_string(const T& s) : str(s) {} +}; + +template <typename... Args> +FMT_INLINE std::string format( + format_string<std::type_identity_t<Args>...> format_str, Args&&... args) { + return detail::vformat(format_str.str, make_format_args(args...)); +} +#endif + +template <typename Char, enable_if_t<(!std::is_same<Char, char>::value), int>> +std::basic_string<Char> detail::vformat( + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + detail::vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)> +void vprint(std::FILE* f, basic_string_view<Char> format_str, + wformat_args args) { + wmemory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + buffer.push_back(L'\0'); + if (std::fputws(buffer.data(), f) == -1) + FMT_THROW(system_error(errno, "cannot write to file")); +} + +template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)> +void vprint(basic_string_view<Char> format_str, wformat_args args) { + vprint(stdout, format_str, args); +} + +FMT_MODULE_EXPORT_END + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +namespace detail { +template <typename Char, size_t N> struct fixed_string { + constexpr fixed_string(const Char (&str)[N]) { + copy_str<Char, const Char*, Char*>(static_cast<const Char*>(str), str + N, + data); + } + Char data[N]{}; +}; +} // namespace detail +#endif + +#if FMT_USE_USER_DEFINED_LITERALS +namespace detail { +template <typename Char> struct udl_formatter { + basic_string_view<Char> str; + + template <typename... Args> + std::basic_string<Char> operator()(Args&&... args) const { + return format(str, std::forward<Args>(args)...); + } +}; + +# if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template <typename T, typename Char, size_t N, fixed_string<Char, N> Str> +struct statically_named_arg : view { + static constexpr auto name = Str.data; + + const T& value; + statically_named_arg(const T& v) : value(v) {} +}; + +template <typename T, typename Char, size_t N, fixed_string<Char, N> Str> +struct is_named_arg<statically_named_arg<T, Char, N, Str>> : std::true_type {}; + +template <typename T, typename Char, size_t N, fixed_string<Char, N> Str> +struct is_statically_named_arg<statically_named_arg<T, Char, N, Str>> + : std::true_type {}; + +template <typename Char, size_t N, fixed_string<Char, N> Str> struct udl_arg { + template <typename T> auto operator=(T&& value) const { + return statically_named_arg<T, Char, N, Str>(std::forward<T>(value)); + } +}; +# else +template <typename Char> struct udl_arg { + const Char* str; + + template <typename T> named_arg<Char, T> operator=(T&& value) const { + return {str, std::forward<T>(value)}; + } +}; +# endif +} // namespace detail +FMT_MODULE_EXPORT_BEGIN + +inline namespace literals { +/** + \rst + User-defined literal equivalent of :func:`fmt::format`. + + **Example**:: + + using namespace fmt::literals; + std::string message = "The answer is {}"_format(42); + \endrst + */ +constexpr detail::udl_formatter<char> operator"" _format(const char* s, + size_t n) { + return {{s, n}}; +} +constexpr detail::udl_formatter<wchar_t> operator"" _format(const wchar_t* s, + size_t n) { + return {{s, n}}; +} + +/** + \rst + User-defined literal equivalent of :func:`fmt::arg`. + + **Example**:: + + using namespace fmt::literals; + fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); + \endrst + */ +# if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template <detail::fixed_string Str> +constexpr detail::udl_arg<remove_cvref_t<decltype(Str.data[0])>, + sizeof(Str.data) / sizeof(decltype(Str.data[0])), Str> +operator""_a() { + return {}; +} +# else +constexpr detail::udl_arg<char> operator"" _a(const char* s, size_t) { + return {s}; +} +constexpr detail::udl_arg<wchar_t> operator"" _a(const wchar_t* s, size_t) { + return {s}; +} +# endif +} // namespace literals + +FMT_MODULE_EXPORT_END +#endif // FMT_USE_USER_DEFINED_LITERALS +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format-inl.h" +#else +# define FMT_FUNC +#endif + +#endif // FMT_FORMAT_H_ diff --git a/deps/fmt/include/fmt/locale.h b/deps/fmt/include/fmt/locale.h new file mode 100644 index 0000000000..e79140a1a1 --- /dev/null +++ b/deps/fmt/include/fmt/locale.h @@ -0,0 +1,67 @@ +// Formatting library for C++ - std::locale support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_LOCALE_H_ +#define FMT_LOCALE_H_ + +#include <locale> + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +namespace detail { +template <typename Char> +std::basic_string<Char> vformat( + const std::locale& loc, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + detail::vformat_to(buffer, format_str, args, detail::locale_ref(loc)); + return fmt::to_string(buffer); +} +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +template <typename S, typename Char = char_t<S>> +inline std::basic_string<Char> vformat( + const std::locale& loc, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + return detail::vformat(loc, to_string_view(format_str), args); +} + +template <typename S, typename... Args, typename Char = char_t<S>> +inline std::basic_string<Char> format(const std::locale& loc, + const S& format_str, Args&&... args) { + return detail::vformat(loc, to_string_view(format_str), + fmt::make_args_checked<Args...>(format_str, args...)); +} + +template <typename S, typename OutputIt, typename... Args, + typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)> +inline OutputIt vformat_to( + OutputIt out, const std::locale& loc, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out)); + vformat_to(buf, to_string_view(format_str), args, detail::locale_ref(loc)); + return detail::get_iterator(buf); +} + +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value> +inline auto format_to(OutputIt out, const std::locale& loc, const S& format_str, + Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return vformat_to(out, loc, to_string_view(format_str), vargs); +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_LOCALE_H_ diff --git a/deps/fmt/include/fmt/os.h b/deps/fmt/include/fmt/os.h new file mode 100644 index 0000000000..1a8833def4 --- /dev/null +++ b/deps/fmt/include/fmt/os.h @@ -0,0 +1,512 @@ +// Formatting library for C++ - optional OS-specific functionality +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OS_H_ +#define FMT_OS_H_ + +#include <cerrno> +#include <clocale> // locale_t +#include <cstddef> +#include <cstdio> +#include <cstdlib> // strtod_l +#include <system_error> // std::system_error + +#if defined __APPLE__ || defined(__FreeBSD__) +# include <xlocale.h> // for LC_NUMERIC_MASK on OS X +#endif + +#include "format.h" + +// UWP doesn't provide _pipe. +#if FMT_HAS_INCLUDE("winapifamily.h") +# include <winapifamily.h> +#endif +#if (FMT_HAS_INCLUDE(<fcntl.h>) || defined(__APPLE__) || \ + defined(__linux__)) && \ + (!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# include <fcntl.h> // for O_RDONLY +# define FMT_USE_FCNTL 1 +#else +# define FMT_USE_FCNTL 0 +#endif + +#ifndef FMT_POSIX +# if defined(_WIN32) && !defined(__MINGW32__) +// Fix warnings about deprecated symbols. +# define FMT_POSIX(call) _##call +# else +# define FMT_POSIX(call) call +# endif +#endif + +// Calls to system functions are wrapped in FMT_SYSTEM for testability. +#ifdef FMT_SYSTEM +# define FMT_POSIX_CALL(call) FMT_SYSTEM(call) +#else +# define FMT_SYSTEM(call) ::call +# ifdef _WIN32 +// Fix warnings about deprecated symbols. +# define FMT_POSIX_CALL(call) ::_##call +# else +# define FMT_POSIX_CALL(call) ::call +# endif +#endif + +// Retries the expression while it evaluates to error_result and errno +// equals to EINTR. +#ifndef _WIN32 +# define FMT_RETRY_VAL(result, expression, error_result) \ + do { \ + (result) = (expression); \ + } while ((result) == (error_result) && errno == EINTR) +#else +# define FMT_RETRY_VAL(result, expression, error_result) result = (expression) +#endif + +#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) + +FMT_BEGIN_NAMESPACE + +/** + \rst + A reference to a null-terminated string. It can be constructed from a C + string or ``std::string``. + + You can use one of the following type aliases for common character types: + + +---------------+-----------------------------+ + | Type | Definition | + +===============+=============================+ + | cstring_view | basic_cstring_view<char> | + +---------------+-----------------------------+ + | wcstring_view | basic_cstring_view<wchar_t> | + +---------------+-----------------------------+ + + This class is most useful as a parameter type to allow passing + different types of strings to a function, for example:: + + template <typename... Args> + std::string format(cstring_view format_str, const Args & ... args); + + format("{}", 42); + format(std::string("{}"), 42); + \endrst + */ +template <typename Char> class basic_cstring_view { + private: + const Char* data_; + + public: + /** Constructs a string reference object from a C string. */ + basic_cstring_view(const Char* s) : data_(s) {} + + /** + \rst + Constructs a string reference from an ``std::string`` object. + \endrst + */ + basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {} + + /** Returns the pointer to a C string. */ + const Char* c_str() const { return data_; } +}; + +using cstring_view = basic_cstring_view<char>; +using wcstring_view = basic_cstring_view<wchar_t>; + +template <typename Char> struct formatter<std::error_code, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + out = detail::write<Char>(out, to_string_view(ec.category().name())); + out = detail::write<Char>(out, Char(':')); + out = detail::write<Char>(out, ec.value()); + return out; + } +}; + +#ifdef _WIN32 +FMT_API const std::error_category& system_category() FMT_NOEXCEPT; + +namespace detail { +// A converter from UTF-16 to UTF-8. +// It is only provided for Windows since other systems support UTF-8 natively. +class utf16_to_utf8 { + private: + memory_buffer buffer_; + + public: + utf16_to_utf8() {} + FMT_API explicit utf16_to_utf8(wstring_view s); + operator string_view() const { return string_view(&buffer_[0], size()); } + size_t size() const { return buffer_.size() - 1; } + const char* c_str() const { return &buffer_[0]; } + std::string str() const { return std::string(&buffer_[0], size()); } + + // Performs conversion returning a system error code instead of + // throwing exception on conversion error. This method may still throw + // in case of memory allocation error. + FMT_API int convert(wstring_view s); +}; + +FMT_API void format_windows_error(buffer<char>& out, int error_code, + const char* message) FMT_NOEXCEPT; +} // namespace detail + +FMT_API std::system_error vwindows_error(int error_code, string_view format_str, + format_args args); + +/** + \rst + Constructs a :class:`std::system_error` object with the description + of the form + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the formatted message and *<system-message>* is the + system message corresponding to the error code. + *error_code* is a Windows error code as given by ``GetLastError``. + If *error_code* is not a valid error code such as -1, the system message + will look like "error -1". + + **Example**:: + + // This throws a system_error with the description + // cannot open file 'madeup': The system cannot find the file specified. + // or similar (system message may vary). + const char *filename = "madeup"; + LPOFSTRUCT of = LPOFSTRUCT(); + HFILE file = OpenFile(filename, &of, OF_READ); + if (file == HFILE_ERROR) { + throw fmt::windows_error(GetLastError(), + "cannot open file '{}'", filename); + } + \endrst +*/ +template <typename... Args> +std::system_error windows_error(int error_code, string_view message, + const Args&... args) { + return vwindows_error(error_code, message, make_format_args(args...)); +} + +// Reports a Windows error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_windows_error(int error_code, + const char* message) FMT_NOEXCEPT; +#else +inline const std::error_category& system_category() FMT_NOEXCEPT { + return std::system_category(); +} +#endif // _WIN32 + +// std::system is not available on some platforms such as iOS (#2248). +#ifdef __OSX__ +template <typename S, typename... Args, typename Char = char_t<S>> +void say(const S& format_str, Args&&... args) { + std::system(format("say \"{}\"", format(format_str, args...)).c_str()); +} +#endif + +// A buffered file. +class buffered_file { + private: + FILE* file_; + + friend class file; + + explicit buffered_file(FILE* f) : file_(f) {} + + public: + buffered_file(const buffered_file&) = delete; + void operator=(const buffered_file&) = delete; + + // Constructs a buffered_file object which doesn't represent any file. + buffered_file() FMT_NOEXCEPT : file_(nullptr) {} + + // Destroys the object closing the file it represents if any. + FMT_API ~buffered_file() FMT_NOEXCEPT; + + public: + buffered_file(buffered_file&& other) FMT_NOEXCEPT : file_(other.file_) { + other.file_ = nullptr; + } + + buffered_file& operator=(buffered_file&& other) { + close(); + file_ = other.file_; + other.file_ = nullptr; + return *this; + } + + // Opens a file. + FMT_API buffered_file(cstring_view filename, cstring_view mode); + + // Closes the file. + FMT_API void close(); + + // Returns the pointer to a FILE object representing this file. + FILE* get() const FMT_NOEXCEPT { return file_; } + + // We place parentheses around fileno to workaround a bug in some versions + // of MinGW that define fileno as a macro. + FMT_API int(fileno)() const; + + void vprint(string_view format_str, format_args args) { + fmt::vprint(file_, format_str, args); + } + + template <typename... Args> + inline void print(string_view format_str, const Args&... args) { + vprint(format_str, make_format_args(args...)); + } +}; + +#if FMT_USE_FCNTL +// A file. Closed file is represented by a file object with descriptor -1. +// Methods that are not declared with FMT_NOEXCEPT may throw +// fmt::system_error in case of failure. Note that some errors such as +// closing the file multiple times will cause a crash on Windows rather +// than an exception. You can get standard behavior by overriding the +// invalid parameter handler with _set_invalid_parameter_handler. +class file { + private: + int fd_; // File descriptor. + + // Constructs a file object with a given descriptor. + explicit file(int fd) : fd_(fd) {} + + public: + // Possible values for the oflag argument to the constructor. + enum { + RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. + WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. + RDWR = FMT_POSIX(O_RDWR), // Open for reading and writing. + CREATE = FMT_POSIX(O_CREAT), // Create if the file doesn't exist. + APPEND = FMT_POSIX(O_APPEND), // Open in append mode. + TRUNC = FMT_POSIX(O_TRUNC) // Truncate the content of the file. + }; + + // Constructs a file object which doesn't represent any file. + file() FMT_NOEXCEPT : fd_(-1) {} + + // Opens a file and constructs a file object representing this file. + FMT_API file(cstring_view path, int oflag); + + public: + file(const file&) = delete; + void operator=(const file&) = delete; + + file(file&& other) FMT_NOEXCEPT : fd_(other.fd_) { other.fd_ = -1; } + + // Move assignment is not noexcept because close may throw. + file& operator=(file&& other) { + close(); + fd_ = other.fd_; + other.fd_ = -1; + return *this; + } + + // Destroys the object closing the file it represents if any. + FMT_API ~file() FMT_NOEXCEPT; + + // Returns the file descriptor. + int descriptor() const FMT_NOEXCEPT { return fd_; } + + // Closes the file. + FMT_API void close(); + + // Returns the file size. The size has signed type for consistency with + // stat::st_size. + FMT_API long long size() const; + + // Attempts to read count bytes from the file into the specified buffer. + FMT_API size_t read(void* buffer, size_t count); + + // Attempts to write count bytes from the specified buffer to the file. + FMT_API size_t write(const void* buffer, size_t count); + + // Duplicates a file descriptor with the dup function and returns + // the duplicate as a file object. + FMT_API static file dup(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + FMT_API void dup2(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + FMT_API void dup2(int fd, std::error_code& ec) FMT_NOEXCEPT; + + // Creates a pipe setting up read_end and write_end file objects for reading + // and writing respectively. + FMT_API static void pipe(file& read_end, file& write_end); + + // Creates a buffered_file object associated with this file and detaches + // this file object from the file. + FMT_API buffered_file fdopen(const char* mode); +}; + +// Returns the memory page size. +long getpagesize(); + +namespace detail { + +struct buffer_size { + buffer_size() = default; + size_t value = 0; + buffer_size operator=(size_t val) const { + auto bs = buffer_size(); + bs.value = val; + return bs; + } +}; + +struct ostream_params { + int oflag = file::WRONLY | file::CREATE | file::TRUNC; + size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768; + + ostream_params() {} + + template <typename... T> + ostream_params(T... params, int new_oflag) : ostream_params(params...) { + oflag = new_oflag; + } + + template <typename... T> + ostream_params(T... params, detail::buffer_size bs) + : ostream_params(params...) { + this->buffer_size = bs.value; + } +}; +} // namespace detail + +static constexpr detail::buffer_size buffer_size; + +/** A fast output stream which is not thread-safe. */ +class ostream final : private detail::buffer<char> { + private: + file file_; + + void flush() { + if (size() == 0) return; + file_.write(data(), size()); + clear(); + } + + FMT_API void grow(size_t) override final; + + ostream(cstring_view path, const detail::ostream_params& params) + : file_(path, params.oflag) { + set(new char[params.buffer_size], params.buffer_size); + } + + public: + ostream(ostream&& other) + : detail::buffer<char>(other.data(), other.size(), other.capacity()), + file_(std::move(other.file_)) { + other.clear(); + other.set(nullptr, 0); + } + ~ostream() { + flush(); + delete[] data(); + } + + template <typename... T> + friend ostream output_file(cstring_view path, T... params); + + void close() { + flush(); + file_.close(); + } + + /** + Formats ``args`` according to specifications in ``format_str`` and writes + the output to the file. + */ + template <typename S, typename... Args> + void print(const S& format_str, Args&&... args) { + format_to(detail::buffer_appender<char>(*this), format_str, + std::forward<Args>(args)...); + } +}; + +/** + \rst + Opens a file for writing. Supported parameters passed in *params*: + + * ``<integer>``: Flags passed to `open + <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_ + (``file::WRONLY | file::CREATE`` by default) + * ``buffer_size=<integer>``: Output buffer size + + **Example**:: + + auto out = fmt::output_file("guide.txt"); + out.print("Don't {}", "Panic"); + \endrst + */ +template <typename... T> +inline ostream output_file(cstring_view path, T... params) { + return {path, detail::ostream_params(params...)}; +} +#endif // FMT_USE_FCNTL + +#ifdef FMT_LOCALE +// A "C" numeric locale. +class locale { + private: +# ifdef _WIN32 + using locale_t = _locale_t; + + static void freelocale(locale_t loc) { _free_locale(loc); } + + static double strtod_l(const char* nptr, char** endptr, _locale_t loc) { + return _strtod_l(nptr, endptr, loc); + } +# endif + + locale_t locale_; + + public: + using type = locale_t; + locale(const locale&) = delete; + void operator=(const locale&) = delete; + + locale() { +# ifndef _WIN32 + locale_ = FMT_SYSTEM(newlocale(LC_NUMERIC_MASK, "C", nullptr)); +# else + locale_ = _create_locale(LC_NUMERIC, "C"); +# endif + if (!locale_) FMT_THROW(system_error(errno, "cannot create locale")); + } + ~locale() { freelocale(locale_); } + + type get() const { return locale_; } + + // Converts string to floating-point number and advances str past the end + // of the parsed input. + double strtod(const char*& str) const { + char* end = nullptr; + double result = strtod_l(str, &end, locale_); + str = end; + return result; + } +}; +using Locale FMT_DEPRECATED_ALIAS = locale; +#endif // FMT_LOCALE +FMT_END_NAMESPACE + +#endif // FMT_OS_H_ diff --git a/deps/fmt/fmt/ostream.h b/deps/fmt/include/fmt/ostream.h index 69bac0e24a..d66248a601 100644 --- a/deps/fmt/fmt/ostream.h +++ b/deps/fmt/include/fmt/ostream.h @@ -9,10 +9,15 @@ #define FMT_OSTREAM_H_ #include <ostream> + #include "format.h" FMT_BEGIN_NAMESPACE -namespace internal { + +template <typename Char> class basic_printf_parse_context; +template <typename OutputIt, typename Char> class basic_printf_context; + +namespace detail { template <class Char> class formatbuf : public std::basic_streambuf<Char> { private: @@ -44,21 +49,35 @@ template <class Char> class formatbuf : public std::basic_streambuf<Char> { } }; +struct converter { + template <typename T, FMT_ENABLE_IF(is_integral<T>::value)> converter(T); +}; + template <typename Char> struct test_stream : std::basic_ostream<Char> { private: - struct null; - // Hide all operator<< from std::basic_ostream<Char>. - void operator<<(null); + void_t<> operator<<(converter); }; +// Hide insertion operators for built-in types. +template <typename Char, typename Traits> +void_t<> operator<<(std::basic_ostream<Char, Traits>&, Char); +template <typename Char, typename Traits> +void_t<> operator<<(std::basic_ostream<Char, Traits>&, char); +template <typename Traits> +void_t<> operator<<(std::basic_ostream<char, Traits>&, char); +template <typename Traits> +void_t<> operator<<(std::basic_ostream<char, Traits>&, signed char); +template <typename Traits> +void_t<> operator<<(std::basic_ostream<char, Traits>&, unsigned char); + // Checks if T has a user-defined operator<< (e.g. not a member of // std::ostream). template <typename T, typename Char> class is_streamable { private: template <typename U> - static decltype((void)(std::declval<test_stream<Char>&>() - << std::declval<U>()), - std::true_type()) + static bool_constant<!std::is_same<decltype(std::declval<test_stream<Char>&>() + << std::declval<U>()), + void_t<>>::value> test(int); template <typename> static std::false_type test(...); @@ -66,17 +85,18 @@ template <typename T, typename Char> class is_streamable { using result = decltype(test<T>(0)); public: + is_streamable() = default; + static const bool value = result::value; }; // Write the content of buf to os. template <typename Char> -void write(std::basic_ostream<Char>& os, buffer<Char>& buf) { +void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) { const Char* buf_data = buf.data(); using unsigned_streamsize = std::make_unsigned<std::streamsize>::type; unsigned_streamsize size = buf.size(); - unsigned_streamsize max_size = - to_unsigned((std::numeric_limits<std::streamsize>::max)()); + unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>()); do { unsigned_streamsize n = size <= max_size ? size : max_size; os.write(buf_data, static_cast<std::streamsize>(n)); @@ -86,34 +106,58 @@ void write(std::basic_ostream<Char>& os, buffer<Char>& buf) { } template <typename Char, typename T> -void format_value(buffer<Char>& buf, const T& value) { +void format_value(buffer<Char>& buf, const T& value, + locale_ref loc = locale_ref()) { formatbuf<Char> format_buf(buf); std::basic_ostream<Char> output(&format_buf); - output.exceptions(std::ios_base::failbit | std::ios_base::badbit); +#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) + if (loc) output.imbue(loc.get<std::locale>()); +#endif output << value; - buf.resize(buf.size()); + output.exceptions(std::ios_base::failbit | std::ios_base::badbit); + buf.try_resize(buf.size()); } // Formats an object of type T that has an overloaded ostream operator<<. template <typename T, typename Char> struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>> - : formatter<basic_string_view<Char>, Char> { - template <typename Context> - auto format(const T& value, Context& ctx) -> decltype(ctx.out()) { + : private formatter<basic_string_view<Char>, Char> { + FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx) + -> decltype(ctx.begin()) { + return formatter<basic_string_view<Char>, Char>::parse(ctx); + } + template <typename ParseCtx, + FMT_ENABLE_IF(std::is_same< + ParseCtx, basic_printf_parse_context<Char>>::value)> + auto parse(ParseCtx& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename OutputIt> + auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) + -> OutputIt { basic_memory_buffer<Char> buffer; - format_value(buffer, value); + format_value(buffer, value, ctx.locale()); basic_string_view<Char> str(buffer.data(), buffer.size()); return formatter<basic_string_view<Char>, Char>::format(str, ctx); } + template <typename OutputIt> + auto format(const T& value, basic_printf_context<OutputIt, Char>& ctx) + -> OutputIt { + basic_memory_buffer<Char> buffer; + format_value(buffer, value, ctx.locale()); + return std::copy(buffer.begin(), buffer.end(), ctx.out()); + } }; -} // namespace internal +} // namespace detail +FMT_MODULE_EXPORT template <typename Char> void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str, - basic_format_args<buffer_context<Char>> args) { + basic_format_args<buffer_context<type_identity_t<Char>>> args) { basic_memory_buffer<Char> buffer; - internal::vformat_to(buffer, format_str, args); - internal::write(os, buffer); + detail::vformat_to(buffer, format_str, args); + detail::write_buffer(os, buffer); } /** @@ -125,11 +169,12 @@ void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str, fmt::print(cerr, "Don't {}!", "panic"); \endrst */ +FMT_MODULE_EXPORT template <typename S, typename... Args, - typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>> + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> void print(std::basic_ostream<Char>& os, const S& format_str, Args&&... args) { vprint(os, to_string_view(format_str), - {internal::make_args_checked<Args...>(format_str, args...)}); + fmt::make_args_checked<Args...>(format_str, args...)); } FMT_END_NAMESPACE diff --git a/deps/fmt/fmt/printf.h b/deps/fmt/include/fmt/printf.h index c803aa952b..c65fe4049f 100644 --- a/deps/fmt/fmt/printf.h +++ b/deps/fmt/include/fmt/printf.h @@ -1,4 +1,4 @@ -// Formatting library for C++ +// Formatting library for C++ - legacy printf implementation // // Copyright (c) 2012 - 2016, Victor Zverovich // All rights reserved. @@ -8,23 +8,20 @@ #ifndef FMT_PRINTF_H_ #define FMT_PRINTF_H_ -#include <algorithm> // std::fill_n +#include <algorithm> // std::max #include <limits> // std::numeric_limits +#include <ostream> -#include "ostream.h" +#include "format.h" FMT_BEGIN_NAMESPACE -namespace internal { - -// A helper function to suppress bogus "conditional expression is constant" -// warnings. -template <typename T> inline T const_check(T value) { return value; } +namespace detail { // Checks if a value fits in int - used to avoid warnings about comparing // signed and unsigned integers. template <bool IsSigned> struct int_checker { template <typename T> static bool fits_in_int(T value) { - unsigned max = std::numeric_limits<int>::max(); + unsigned max = max_value<int>(); return value <= max; } static bool fits_in_int(bool) { return true; } @@ -32,8 +29,8 @@ template <bool IsSigned> struct int_checker { template <> struct int_checker<true> { template <typename T> static bool fits_in_int(T value) { - return value >= std::numeric_limits<int>::min() && - value <= std::numeric_limits<int>::max(); + return value >= (std::numeric_limits<int>::min)() && + value <= max_value<int>(); } static bool fits_in_int(int) { return true; } }; @@ -94,11 +91,11 @@ template <typename T, typename Context> class arg_converter { if (const_check(sizeof(target_type) <= sizeof(int))) { // Extra casts are used to silence warnings. if (is_signed) { - arg_ = internal::make_arg<Context>( + arg_ = detail::make_arg<Context>( static_cast<int>(static_cast<target_type>(value))); } else { using unsigned_type = typename make_unsigned_or_bool<target_type>::type; - arg_ = internal::make_arg<Context>( + arg_ = detail::make_arg<Context>( static_cast<unsigned>(static_cast<unsigned_type>(value))); } } else { @@ -106,9 +103,9 @@ template <typename T, typename Context> class arg_converter { // glibc's printf doesn't sign extend arguments of smaller types: // std::printf("%lld", -42); // prints "4294967254" // but we don't have to do the same because it's a UB. - arg_ = internal::make_arg<Context>(static_cast<long long>(value)); + arg_ = detail::make_arg<Context>(static_cast<long long>(value)); } else { - arg_ = internal::make_arg<Context>( + arg_ = detail::make_arg<Context>( static_cast<typename make_unsigned_or_bool<U>::type>(value)); } } @@ -137,7 +134,7 @@ template <typename Context> class char_converter { template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> void operator()(T value) { - arg_ = internal::make_arg<Context>( + arg_ = detail::make_arg<Context>( static_cast<typename Context::char_type>(value)); } @@ -145,6 +142,13 @@ template <typename Context> class char_converter { void operator()(T) {} // No conversion needed for non-integral types. }; +// An argument visitor that return a pointer to a C string if argument is a +// string or null otherwise. +template <typename Char> struct get_cstring { + template <typename T> const Char* operator()(T) { return nullptr; } + const Char* operator()(const Char* s) { return s; } +}; + // Checks if an argument is a valid printf width specifier and sets // left alignment if it is negative. template <typename Char> class printf_width_handler { @@ -158,12 +162,12 @@ template <typename Char> class printf_width_handler { template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> unsigned operator()(T value) { - auto width = static_cast<uint32_or_64_t<T>>(value); - if (internal::is_negative(value)) { + auto width = static_cast<uint32_or_64_or_128_t<T>>(value); + if (detail::is_negative(value)) { specs_.align = align::left; width = 0 - width; } - unsigned int_max = std::numeric_limits<int>::max(); + unsigned int_max = max_value<int>(); if (width > int_max) FMT_THROW(format_error("number is too big")); return static_cast<unsigned>(width); } @@ -176,155 +180,136 @@ template <typename Char> class printf_width_handler { }; template <typename Char, typename Context> -void printf(buffer<Char>& buf, basic_string_view<Char> format, - basic_format_args<Context> args) { - Context(std::back_inserter(buf), format, args).format(); +void vprintf(buffer<Char>& buf, basic_string_view<Char> format, + basic_format_args<Context> args) { + Context(buffer_appender<Char>(buf), format, args).format(); } +} // namespace detail -template <typename OutputIt, typename Char, typename Context> -internal::truncating_iterator<OutputIt> printf( - internal::truncating_iterator<OutputIt> it, basic_string_view<Char> format, - basic_format_args<Context> args) { - return Context(it, format, args).format(); +// For printing into memory_buffer. +template <typename Char, typename Context> +FMT_DEPRECATED void printf(detail::buffer<Char>& buf, + basic_string_view<Char> format, + basic_format_args<Context> args) { + return detail::vprintf(buf, format, args); } -} // namespace internal - -using internal::printf; // For printing into memory_buffer. +using detail::vprintf; -template <typename Range> class printf_arg_formatter; +FMT_MODULE_EXPORT_BEGIN +template <typename Char> +class basic_printf_parse_context : public basic_format_parse_context<Char> { + using basic_format_parse_context<Char>::basic_format_parse_context; +}; template <typename OutputIt, typename Char> class basic_printf_context; +FMT_MODULE_EXPORT_END + /** \rst The ``printf`` argument formatter. \endrst */ -template <typename Range> -class printf_arg_formatter : public internal::arg_formatter_base<Range> { - public: - using iterator = typename Range::iterator; - +template <typename OutputIt, typename Char> +class printf_arg_formatter : public detail::arg_formatter_base<OutputIt, Char> { private: - using char_type = typename Range::value_type; - using base = internal::arg_formatter_base<Range>; - using context_type = basic_printf_context<iterator, char_type>; + using base = detail::arg_formatter_base<OutputIt, Char>; + using context_type = basic_printf_context<OutputIt, Char>; + using format_specs = typename base::format_specs; context_type& context_; - void write_null_pointer(char) { - this->specs()->type = 0; - this->write("(nil)"); - } - - void write_null_pointer(wchar_t) { - this->specs()->type = 0; - this->write(L"(nil)"); + OutputIt write_null_pointer(bool is_string = false) { + auto s = this->specs(); + s.type = 0; + return detail::write(this->out(), + string_view(is_string ? "(null)" : "(nil)"), s); } public: - using format_specs = typename base::format_specs; + printf_arg_formatter(OutputIt iter, format_specs& specs, context_type& ctx) + : base(iter, specs, detail::locale_ref()), context_(ctx) {} - /** - \rst - Constructs an argument formatter object. - *buffer* is a reference to the output buffer and *specs* contains format - specifier information for standard argument types. - \endrst - */ - printf_arg_formatter(iterator iter, format_specs& specs, context_type& ctx) - : base(Range(iter), &specs, internal::locale_ref()), context_(ctx) {} + OutputIt operator()(monostate value) { return base::operator()(value); } - template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> - iterator operator()(T value) { - // MSVC2013 fails to compile separate overloads for bool and char_type so - // use std::is_same instead. - if (std::is_same<T, bool>::value) { - format_specs& fmt_specs = *this->specs(); - if (fmt_specs.type != 's') return base::operator()(value ? 1 : 0); - fmt_specs.type = 0; - this->write(value != 0); - } else if (std::is_same<T, char_type>::value) { - format_specs& fmt_specs = *this->specs(); + template <typename T, FMT_ENABLE_IF(fmt::detail::is_integral<T>::value)> + OutputIt operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and Char so use + // std::is_same instead. + if (std::is_same<T, Char>::value) { + format_specs fmt_specs = this->specs(); if (fmt_specs.type && fmt_specs.type != 'c') return (*this)(static_cast<int>(value)); fmt_specs.sign = sign::none; fmt_specs.alt = false; - fmt_specs.align = align::right; - return base::operator()(value); - } else { - return base::operator()(value); + fmt_specs.fill[0] = ' '; // Ignore '0' flag for char types. + // align::numeric needs to be overwritten here since the '0' flag is + // ignored for non-numeric types + if (fmt_specs.align == align::none || fmt_specs.align == align::numeric) + fmt_specs.align = align::right; + return detail::write<Char>(this->out(), static_cast<Char>(value), + fmt_specs); } - return this->out(); + return base::operator()(value); } template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> - iterator operator()(T value) { + OutputIt operator()(T value) { return base::operator()(value); } /** Formats a null-terminated C string. */ - iterator operator()(const char* value) { - if (value) - base::operator()(value); - else if (this->specs()->type == 'p') - write_null_pointer(char_type()); - else - this->write("(null)"); - return this->out(); + OutputIt operator()(const char* value) { + if (value) return base::operator()(value); + return write_null_pointer(this->specs().type != 'p'); } /** Formats a null-terminated wide C string. */ - iterator operator()(const wchar_t* value) { - if (value) - base::operator()(value); - else if (this->specs()->type == 'p') - write_null_pointer(char_type()); - else - this->write(L"(null)"); - return this->out(); + OutputIt operator()(const wchar_t* value) { + if (value) return base::operator()(value); + return write_null_pointer(this->specs().type != 'p'); } - iterator operator()(basic_string_view<char_type> value) { + OutputIt operator()(basic_string_view<Char> value) { return base::operator()(value); } - iterator operator()(monostate value) { return base::operator()(value); } - /** Formats a pointer. */ - iterator operator()(const void* value) { - if (value) return base::operator()(value); - this->specs()->type = 0; - write_null_pointer(char_type()); - return this->out(); + OutputIt operator()(const void* value) { + return value ? base::operator()(value) : write_null_pointer(); } /** Formats an argument of a custom (user-defined) type. */ - iterator operator()(typename basic_format_arg<context_type>::handle handle) { + OutputIt operator()(typename basic_format_arg<context_type>::handle handle) { handle.format(context_.parse_context(), context_); return this->out(); } }; template <typename T> struct printf_formatter { + printf_formatter() = delete; + template <typename ParseContext> auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { return ctx.begin(); } template <typename FormatContext> - auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) { - internal::format_value(internal::get_container(ctx.out()), value); + auto format(const T&, FormatContext& ctx) -> decltype(ctx.out()) { return ctx.out(); } }; -/** This template formats data and writes the output to a writer. */ +/** + This template formats data and writes the output through an output iterator. + */ template <typename OutputIt, typename Char> class basic_printf_context { public: /** The character type for the output. */ using char_type = Char; + using iterator = OutputIt; using format_arg = basic_format_arg<basic_printf_context>; + using parse_context_type = basic_printf_parse_context<Char>; template <typename T> using formatter_type = printf_formatter<T>; private: @@ -332,24 +317,23 @@ template <typename OutputIt, typename Char> class basic_printf_context { OutputIt out_; basic_format_args<basic_printf_context> args_; - basic_parse_context<Char> parse_ctx_; + parse_context_type parse_ctx_; static void parse_flags(format_specs& specs, const Char*& it, const Char* end); - // Returns the argument with specified index or, if arg_index is equal - // to the maximum unsigned value, the next argument. - format_arg get_arg(unsigned arg_index = std::numeric_limits<unsigned>::max()); + // Returns the argument with specified index or, if arg_index is -1, the next + // argument. + format_arg get_arg(int arg_index = -1); // Parses argument index, flags and width and returns the argument index. - unsigned parse_header(const Char*& it, const Char* end, format_specs& specs); + int parse_header(const Char*& it, const Char* end, format_specs& specs); public: /** \rst - Constructs a ``printf_context`` object. References to the arguments and - the writer are stored in the context object so make sure they have - appropriate lifetimes. + Constructs a ``printf_context`` object. References to the arguments are + stored in the context object so make sure they have appropriate lifetimes. \endrst */ basic_printf_context(OutputIt out, basic_string_view<char_type> format_str, @@ -359,17 +343,18 @@ template <typename OutputIt, typename Char> class basic_printf_context { OutputIt out() { return out_; } void advance_to(OutputIt it) { out_ = it; } - format_arg arg(unsigned id) const { return args_.get(id); } + detail::locale_ref locale() { return {}; } + + format_arg arg(int id) const { return args_.get(id); } - basic_parse_context<Char>& parse_context() { return parse_ctx_; } + parse_context_type& parse_context() { return parse_ctx_; } FMT_CONSTEXPR void on_error(const char* message) { parse_ctx_.on_error(message); } /** Formats stored arguments and writes the output to the range. */ - template <typename ArgFormatter = - printf_arg_formatter<internal::buffer_range<Char>>> + template <typename ArgFormatter = printf_arg_formatter<OutputIt, Char>> OutputIt format(); }; @@ -389,7 +374,9 @@ void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs, specs.fill[0] = '0'; break; case ' ': - specs.sign = sign::space; + if (specs.sign != sign::plus) { + specs.sign = sign::space; + } break; case '#': specs.alt = true; @@ -402,24 +389,25 @@ void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs, template <typename OutputIt, typename Char> typename basic_printf_context<OutputIt, Char>::format_arg -basic_printf_context<OutputIt, Char>::get_arg(unsigned arg_index) { - if (arg_index == std::numeric_limits<unsigned>::max()) +basic_printf_context<OutputIt, Char>::get_arg(int arg_index) { + if (arg_index < 0) arg_index = parse_ctx_.next_arg_id(); else parse_ctx_.check_arg_id(--arg_index); - return internal::get_arg(*this, arg_index); + return detail::get_arg(*this, arg_index); } template <typename OutputIt, typename Char> -unsigned basic_printf_context<OutputIt, Char>::parse_header( - const Char*& it, const Char* end, format_specs& specs) { - unsigned arg_index = std::numeric_limits<unsigned>::max(); +int basic_printf_context<OutputIt, Char>::parse_header(const Char*& it, + const Char* end, + format_specs& specs) { + int arg_index = -1; char_type c = *it; if (c >= '0' && c <= '9') { // Parse an argument index (if followed by '$') or a width possibly // preceded with '0' flag(s). - internal::error_handler eh; - unsigned value = parse_nonnegative_int(it, end, eh); + detail::error_handler eh; + int value = parse_nonnegative_int(it, end, eh); if (it != end && *it == '$') { // value is an argument index ++it; arg_index = value; @@ -437,12 +425,12 @@ unsigned basic_printf_context<OutputIt, Char>::parse_header( // Parse width. if (it != end) { if (*it >= '0' && *it <= '9') { - internal::error_handler eh; + detail::error_handler eh; specs.width = parse_nonnegative_int(it, end, eh); } else if (*it == '*') { ++it; - specs.width = visit_format_arg( - internal::printf_width_handler<char_type>(specs), get_arg()); + specs.width = static_cast<int>(visit_format_arg( + detail::printf_width_handler<char_type>(specs), get_arg())); } } return arg_index; @@ -456,51 +444,71 @@ OutputIt basic_printf_context<OutputIt, Char>::format() { const Char* end = parse_ctx_.end(); auto it = start; while (it != end) { + if (!detail::find<false, Char>(it, end, '%', it)) { + it = end; // detail::find leaves it == nullptr if it doesn't find '%' + break; + } char_type c = *it++; - if (c != '%') continue; if (it != end && *it == c) { - out = std::copy(start, it, out); + out = detail::write( + out, basic_string_view<Char>(start, detail::to_unsigned(it - start))); start = ++it; continue; } - out = std::copy(start, it - 1, out); + out = detail::write(out, basic_string_view<Char>( + start, detail::to_unsigned(it - 1 - start))); format_specs specs; specs.align = align::right; // Parse argument index, flags and width. - unsigned arg_index = parse_header(it, end, specs); + int arg_index = parse_header(it, end, specs); + if (arg_index == 0) on_error("argument not found"); // Parse precision. if (it != end && *it == '.') { ++it; c = it != end ? *it : 0; if ('0' <= c && c <= '9') { - internal::error_handler eh; - specs.precision = static_cast<int>(parse_nonnegative_int(it, end, eh)); + detail::error_handler eh; + specs.precision = parse_nonnegative_int(it, end, eh); } else if (c == '*') { ++it; - specs.precision = - visit_format_arg(internal::printf_precision_handler(), get_arg()); + specs.precision = static_cast<int>( + visit_format_arg(detail::printf_precision_handler(), get_arg())); } else { specs.precision = 0; } } format_arg arg = get_arg(arg_index); - if (specs.alt && visit_format_arg(internal::is_zero_int(), arg)) + // For d, i, o, u, x, and X conversion specifiers, if a precision is + // specified, the '0' flag is ignored + if (specs.precision >= 0 && arg.is_integral()) + specs.fill[0] = + ' '; // Ignore '0' flag for non-numeric types or if '-' present. + if (specs.precision >= 0 && arg.type() == detail::type::cstring_type) { + auto str = visit_format_arg(detail::get_cstring<Char>(), arg); + auto str_end = str + specs.precision; + auto nul = std::find(str, str_end, Char()); + arg = detail::make_arg<basic_printf_context>(basic_string_view<Char>( + str, + detail::to_unsigned(nul != str_end ? nul - str : specs.precision))); + } + if (specs.alt && visit_format_arg(detail::is_zero_int(), arg)) specs.alt = false; if (specs.fill[0] == '0') { - if (arg.is_arithmetic()) + if (arg.is_arithmetic() && specs.align != align::left) specs.align = align::numeric; else - specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types. + specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types or if '-' + // flag is also present. } // Parse length and convert the argument to the required type. c = it != end ? *it++ : 0; char_type t = it != end ? *it : 0; - using internal::convert_arg; + using detail::convert_arg; switch (c) { case 'h': if (t == 'h') { @@ -524,7 +532,7 @@ OutputIt basic_printf_context<OutputIt, Char>::format() { convert_arg<intmax_t>(arg, t); break; case 'z': - convert_arg<std::size_t>(arg, t); + convert_arg<size_t>(arg, t); break; case 't': convert_arg<std::ptrdiff_t>(arg, t); @@ -549,7 +557,7 @@ OutputIt basic_printf_context<OutputIt, Char>::format() { specs.type = 'd'; break; case 'c': - visit_format_arg(internal::char_converter<basic_printf_context>(arg), + visit_format_arg(detail::char_converter<basic_printf_context>(arg), arg); break; } @@ -558,15 +566,17 @@ OutputIt basic_printf_context<OutputIt, Char>::format() { start = it; // Format argument. - visit_format_arg(ArgFormatter(out, specs, *this), arg); + out = visit_format_arg(ArgFormatter(out, specs, *this), arg); } - return std::copy(start, it, out); + return detail::write( + out, basic_string_view<Char>(start, detail::to_unsigned(it - start))); } +FMT_MODULE_EXPORT_BEGIN + template <typename Char> using basic_printf_context_t = - basic_printf_context<std::back_insert_iterator<internal::buffer<Char>>, - Char>; + basic_printf_context<detail::buffer_appender<Char>, Char>; using printf_context = basic_printf_context_t<char>; using wprintf_context = basic_printf_context_t<wchar_t>; @@ -600,9 +610,10 @@ inline format_arg_store<wprintf_context, Args...> make_wprintf_args( template <typename S, typename Char = char_t<S>> inline std::basic_string<Char> vsprintf( - const S& format, basic_format_args<basic_printf_context_t<Char>> args) { + const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { basic_memory_buffer<Char> buffer; - printf(buffer, to_string_view(format), args); + vprintf(buffer, to_string_view(format), args); return to_string(buffer); } @@ -616,18 +627,19 @@ inline std::basic_string<Char> vsprintf( \endrst */ template <typename S, typename... Args, - typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>> + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> inline std::basic_string<Char> sprintf(const S& format, const Args&... args) { using context = basic_printf_context_t<Char>; - return vsprintf(to_string_view(format), {make_format_args<context>(args...)}); + return vsprintf(to_string_view(format), make_format_args<context>(args...)); } template <typename S, typename Char = char_t<S>> -inline int vfprintf(std::FILE* f, const S& format, - basic_format_args<basic_printf_context_t<Char>> args) { +inline int vfprintf( + std::FILE* f, const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { basic_memory_buffer<Char> buffer; - printf(buffer, to_string_view(format), args); - std::size_t size = buffer.size(); + vprintf(buffer, to_string_view(format), args); + size_t size = buffer.size(); return std::fwrite(buffer.data(), sizeof(Char), size, f) < size ? -1 : static_cast<int>(size); @@ -643,16 +655,17 @@ inline int vfprintf(std::FILE* f, const S& format, \endrst */ template <typename S, typename... Args, - typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>> + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> inline int fprintf(std::FILE* f, const S& format, const Args&... args) { using context = basic_printf_context_t<Char>; return vfprintf(f, to_string_view(format), - {make_format_args<context>(args...)}); + make_format_args<context>(args...)); } template <typename S, typename Char = char_t<S>> -inline int vprintf(const S& format, - basic_format_args<basic_printf_context_t<Char>> args) { +inline int vprintf( + const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { return vfprintf(stdout, to_string_view(format), args); } @@ -666,19 +679,20 @@ inline int vprintf(const S& format, \endrst */ template <typename S, typename... Args, - FMT_ENABLE_IF(internal::is_string<S>::value)> + FMT_ENABLE_IF(detail::is_string<S>::value)> inline int printf(const S& format_str, const Args&... args) { using context = basic_printf_context_t<char_t<S>>; return vprintf(to_string_view(format_str), - {make_format_args<context>(args...)}); + make_format_args<context>(args...)); } template <typename S, typename Char = char_t<S>> -inline int vfprintf(std::basic_ostream<Char>& os, const S& format, - basic_format_args<basic_printf_context_t<Char>> args) { +inline int vfprintf( + std::basic_ostream<Char>& os, const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { basic_memory_buffer<Char> buffer; - printf(buffer, to_string_view(format), args); - internal::write(os, buffer); + vprintf(buffer, to_string_view(format), args); + os.write(buffer.data(), static_cast<std::streamsize>(buffer.size())); return static_cast<int>(buffer.size()); } @@ -686,9 +700,9 @@ inline int vfprintf(std::basic_ostream<Char>& os, const S& format, template <typename ArgFormatter, typename Char, typename Context = basic_printf_context<typename ArgFormatter::iterator, Char>> -typename ArgFormatter::iterator vprintf(internal::buffer<Char>& out, - basic_string_view<Char> format_str, - basic_format_args<Context> args) { +typename ArgFormatter::iterator vprintf( + detail::buffer<Char>& out, basic_string_view<Char> format_str, + basic_format_args<type_identity_t<Context>> args) { typename ArgFormatter::iterator iter(out); Context(iter, format_str, args).template format<ArgFormatter>(); return iter; @@ -708,8 +722,10 @@ inline int fprintf(std::basic_ostream<Char>& os, const S& format_str, const Args&... args) { using context = basic_printf_context_t<Char>; return vfprintf(os, to_string_view(format_str), - {make_format_args<context>(args...)}); + make_format_args<context>(args...)); } + +FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_PRINTF_H_ diff --git a/deps/fmt/include/fmt/ranges.h b/deps/fmt/include/fmt/ranges.h new file mode 100644 index 0000000000..367d7a6ba3 --- /dev/null +++ b/deps/fmt/include/fmt/ranges.h @@ -0,0 +1,469 @@ +// Formatting library for C++ - experimental range support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. +// +// Copyright (c) 2018 - present, Remotion (Igor Schulz) +// All Rights Reserved +// {fmt} support for ranges, containers and types tuple interface. + +#ifndef FMT_RANGES_H_ +#define FMT_RANGES_H_ + +#include <initializer_list> +#include <type_traits> + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +template <typename Char> struct formatting_base { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } +}; + +template <typename Char, typename Enable = void> +struct formatting_range : formatting_base<Char> { +#ifdef FMT_DEPRECATED_BRACED_RANGES + Char prefix = '{'; + Char postfix = '}'; +#else + Char prefix = '['; + Char postfix = ']'; +#endif +}; + +template <typename Char, typename Enable = void> +struct formatting_tuple : formatting_base<Char> { + Char prefix = '('; + Char postfix = ')'; +}; + +namespace detail { + +template <typename RangeT, typename OutputIterator> +OutputIterator copy(const RangeT& range, OutputIterator out) { + for (auto it = range.begin(), end = range.end(); it != end; ++it) + *out++ = *it; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(const char* str, OutputIterator out) { + while (*str) *out++ = *str++; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(char ch, OutputIterator out) { + *out++ = ch; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(wchar_t ch, OutputIterator out) { + *out++ = ch; + return out; +} + +/// Return true value if T has std::string interface, like std::string_view. +template <typename T> class is_std_string_like { + template <typename U> + static auto check(U* p) + -> decltype((void)p->find('a'), p->length(), (void)p->data(), int()); + template <typename> static void check(...); + + public: + static FMT_CONSTEXPR_DECL const bool value = + is_string<T>::value || !std::is_void<decltype(check<T>(nullptr))>::value; +}; + +template <typename Char> +struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {}; + +template <typename... Ts> struct conditional_helper {}; + +template <typename T, typename _ = void> struct is_range_ : std::false_type {}; + +#if !FMT_MSC_VER || FMT_MSC_VER > 1800 + +# define FMT_DECLTYPE_RETURN(val) \ + ->decltype(val) { return val; } \ + static_assert( \ + true, "") // This makes it so that a semicolon is required after the + // macro, which helps clang-format handle the formatting. + +// C array overload +template <typename T, std::size_t N> +auto range_begin(const T (&arr)[N]) -> const T* { + return arr; +} +template <typename T, std::size_t N> +auto range_end(const T (&arr)[N]) -> const T* { + return arr + N; +} + +template <typename T, typename Enable = void> +struct has_member_fn_begin_end_t : std::false_type {}; + +template <typename T> +struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()), + decltype(std::declval<T>().end())>> + : std::true_type {}; + +// Member function overload +template <typename T> +auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin()); +template <typename T> +auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end()); + +// ADL overload. Only participates in overload resolution if member functions +// are not found. +template <typename T> +auto range_begin(T&& rng) + -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value, + decltype(begin(static_cast<T&&>(rng)))> { + return begin(static_cast<T&&>(rng)); +} +template <typename T> +auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value, + decltype(end(static_cast<T&&>(rng)))> { + return end(static_cast<T&&>(rng)); +} + +template <typename T, typename Enable = void> +struct has_const_begin_end : std::false_type {}; +template <typename T, typename Enable = void> +struct has_mutable_begin_end : std::false_type {}; + +template <typename T> +struct has_const_begin_end< + T, void_t<decltype(detail::range_begin( + std::declval<const remove_cvref_t<T>&>())), + decltype(detail::range_begin( + std::declval<const remove_cvref_t<T>&>()))>> + : std::true_type {}; + +template <typename T> +struct has_mutable_begin_end< + T, void_t<decltype(detail::range_begin(std::declval<T>())), + decltype(detail::range_begin(std::declval<T>())), + enable_if_t<std::is_copy_constructible<T>::value>>> + : std::true_type {}; + +template <typename T> +struct is_range_<T, void> + : std::integral_constant<bool, (has_const_begin_end<T>::value || + has_mutable_begin_end<T>::value)> {}; + +template <typename T, typename Enable = void> struct range_to_view; +template <typename T> +struct range_to_view<T, enable_if_t<has_const_begin_end<T>::value>> { + struct view_t { + const T* m_range_ptr; + + auto begin() const FMT_DECLTYPE_RETURN(detail::range_begin(*m_range_ptr)); + auto end() const FMT_DECLTYPE_RETURN(detail::range_end(*m_range_ptr)); + }; + static auto view(const T& range) -> view_t { return {&range}; } +}; + +template <typename T> +struct range_to_view<T, enable_if_t<!has_const_begin_end<T>::value && + has_mutable_begin_end<T>::value>> { + struct view_t { + T m_range_copy; + + auto begin() FMT_DECLTYPE_RETURN(detail::range_begin(m_range_copy)); + auto end() FMT_DECLTYPE_RETURN(detail::range_end(m_range_copy)); + }; + static auto view(const T& range) -> view_t { return {range}; } +}; +# undef FMT_DECLTYPE_RETURN +#endif + +/// tuple_size and tuple_element check. +template <typename T> class is_tuple_like_ { + template <typename U> + static auto check(U* p) -> decltype(std::tuple_size<U>::value, int()); + template <typename> static void check(...); + + public: + static FMT_CONSTEXPR_DECL const bool value = + !std::is_void<decltype(check<T>(nullptr))>::value; +}; + +// Check for integer_sequence +#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900 +template <typename T, T... N> +using integer_sequence = std::integer_sequence<T, N...>; +template <size_t... N> using index_sequence = std::index_sequence<N...>; +template <size_t N> using make_index_sequence = std::make_index_sequence<N>; +#else +template <typename T, T... N> struct integer_sequence { + using value_type = T; + + static FMT_CONSTEXPR size_t size() { return sizeof...(N); } +}; + +template <size_t... N> using index_sequence = integer_sequence<size_t, N...>; + +template <typename T, size_t N, T... Ns> +struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {}; +template <typename T, T... Ns> +struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {}; + +template <size_t N> +using make_index_sequence = make_integer_sequence<size_t, N>; +#endif + +template <class Tuple, class F, size_t... Is> +void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) FMT_NOEXCEPT { + using std::get; + // using free function get<I>(T) now. + const int _[] = {0, ((void)f(get<Is>(tup)), 0)...}; + (void)_; // blocks warnings +} + +template <class T> +FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes( + T const&) { + return {}; +} + +template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) { + const auto indexes = get_indexes(tup); + for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f)); +} + +template <typename Range> +using value_type = + remove_cvref_t<decltype(*detail::range_begin(std::declval<Range>()))>; + +template <typename OutputIt> OutputIt write_delimiter(OutputIt out) { + *out++ = ','; + *out++ = ' '; + return out; +} + +template < + typename Char, typename OutputIt, typename Arg, + FMT_ENABLE_IF(is_std_string_like<typename std::decay<Arg>::type>::value)> +OutputIt write_range_entry(OutputIt out, const Arg& v) { + *out++ = '"'; + out = write<Char>(out, v); + *out++ = '"'; + return out; +} + +template <typename Char, typename OutputIt, typename Arg, + FMT_ENABLE_IF(std::is_same<Arg, Char>::value)> +OutputIt write_range_entry(OutputIt out, const Arg v) { + *out++ = '\''; + *out++ = v; + *out++ = '\''; + return out; +} + +template < + typename Char, typename OutputIt, typename Arg, + FMT_ENABLE_IF(!is_std_string_like<typename std::decay<Arg>::type>::value && + !std::is_same<Arg, Char>::value)> +OutputIt write_range_entry(OutputIt out, const Arg& v) { + return write<Char>(out, v); +} + +} // namespace detail + +template <typename T> struct is_tuple_like { + static FMT_CONSTEXPR_DECL const bool value = + detail::is_tuple_like_<T>::value && !detail::is_range_<T>::value; +}; + +template <typename TupleT, typename Char> +struct formatter<TupleT, Char, enable_if_t<fmt::is_tuple_like<TupleT>::value>> { + private: + // C++11 generic lambda for format() + template <typename FormatContext> struct format_each { + template <typename T> void operator()(const T& v) { + if (i > 0) out = detail::write_delimiter(out); + out = detail::write_range_entry<Char>(out, v); + ++i; + } + formatting_tuple<Char>& formatting; + size_t& i; + typename std::add_lvalue_reference<decltype( + std::declval<FormatContext>().out())>::type out; + }; + + public: + formatting_tuple<Char> formatting; + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return formatting.parse(ctx); + } + + template <typename FormatContext = format_context> + auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) { + auto out = ctx.out(); + size_t i = 0; + + detail::copy(formatting.prefix, out); + detail::for_each(values, format_each<FormatContext>{formatting, i, out}); + detail::copy(formatting.postfix, out); + + return ctx.out(); + } +}; + +template <typename T, typename Char> struct is_range { + static FMT_CONSTEXPR_DECL const bool value = + detail::is_range_<T>::value && !detail::is_std_string_like<T>::value && + !std::is_convertible<T, std::basic_string<Char>>::value && + !std::is_constructible<detail::std_string_view<Char>, T>::value; +}; + +template <typename T, typename Char> +struct formatter< + T, Char, + enable_if_t< + fmt::is_range<T, Char>::value +// Workaround a bug in MSVC 2017 and earlier. +#if !FMT_MSC_VER || FMT_MSC_VER >= 1927 + && (has_formatter<detail::value_type<T>, format_context>::value || + detail::has_fallback_formatter<detail::value_type<T>, Char>::value) +#endif + >> { + formatting_range<Char> formatting; + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return formatting.parse(ctx); + } + + template <typename FormatContext> + typename FormatContext::iterator format(const T& values, FormatContext& ctx) { + auto out = detail::copy(formatting.prefix, ctx.out()); + size_t i = 0; + auto view = detail::range_to_view<T>::view(values); + auto it = view.begin(); + auto end = view.end(); + for (; it != end; ++it) { + if (i > 0) out = detail::write_delimiter(out); + out = detail::write_range_entry<Char>(out, *it); + ++i; + } + return detail::copy(formatting.postfix, out); + } +}; + +template <typename Char, typename... T> struct tuple_arg_join : detail::view { + const std::tuple<T...>& tuple; + basic_string_view<Char> sep; + + tuple_arg_join(const std::tuple<T...>& t, basic_string_view<Char> s) + : tuple(t), sep{s} {} +}; + +template <typename Char, typename... T> +struct formatter<tuple_arg_join<Char, T...>, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + typename FormatContext::iterator format( + const tuple_arg_join<Char, T...>& value, FormatContext& ctx) { + return format(value, ctx, detail::make_index_sequence<sizeof...(T)>{}); + } + + private: + template <typename FormatContext, size_t... N> + typename FormatContext::iterator format( + const tuple_arg_join<Char, T...>& value, FormatContext& ctx, + detail::index_sequence<N...>) { + return format_args(value, ctx, std::get<N>(value.tuple)...); + } + + template <typename FormatContext> + typename FormatContext::iterator format_args( + const tuple_arg_join<Char, T...>&, FormatContext& ctx) { + // NOTE: for compilers that support C++17, this empty function instantiation + // can be replaced with a constexpr branch in the variadic overload. + return ctx.out(); + } + + template <typename FormatContext, typename Arg, typename... Args> + typename FormatContext::iterator format_args( + const tuple_arg_join<Char, T...>& value, FormatContext& ctx, + const Arg& arg, const Args&... args) { + using base = formatter<typename std::decay<Arg>::type, Char>; + auto out = ctx.out(); + out = base{}.format(arg, ctx); + if (sizeof...(Args) > 0) { + out = std::copy(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + return format_args(value, ctx, args...); + } + return out; + } +}; + +FMT_MODULE_EXPORT_BEGIN + +/** + \rst + Returns an object that formats `tuple` with elements separated by `sep`. + + **Example**:: + + std::tuple<int, char> t = {1, 'a'}; + fmt::print("{}", fmt::join(t, ", ")); + // Output: "1, a" + \endrst + */ +template <typename... T> +FMT_CONSTEXPR tuple_arg_join<char, T...> join(const std::tuple<T...>& tuple, + string_view sep) { + return {tuple, sep}; +} + +template <typename... T> +FMT_CONSTEXPR tuple_arg_join<wchar_t, T...> join(const std::tuple<T...>& tuple, + wstring_view sep) { + return {tuple, sep}; +} + +/** + \rst + Returns an object that formats `initializer_list` with elements separated by + `sep`. + + **Example**:: + + fmt::print("{}", fmt::join({1, 2, 3}, ", ")); + // Output: "1, 2, 3" + \endrst + */ +template <typename T> +arg_join<const T*, const T*, char> join(std::initializer_list<T> list, + string_view sep) { + return join(std::begin(list), std::end(list), sep); +} + +template <typename T> +arg_join<const T*, const T*, wchar_t> join(std::initializer_list<T> list, + wstring_view sep) { + return join(std::begin(list), std::end(list), sep); +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_RANGES_H_ diff --git a/deps/fmt/src/fmt.cc b/deps/fmt/src/fmt.cc new file mode 100644 index 0000000000..b0d805da41 --- /dev/null +++ b/deps/fmt/src/fmt.cc @@ -0,0 +1,94 @@ +module; +// put all implementation-provided headers into the global module fragment +// to prevent attachment to this module +#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER) +# define _CRT_SECURE_NO_WARNINGS +#endif +#if !defined(WIN32_LEAN_AND_MEAN) && defined(_WIN32) +# define WIN32_LEAN_AND_MEAN +#endif + +#include <cctype> +#include <cerrno> +#include <climits> +#include <clocale> +#include <cmath> +#include <cstdarg> +#include <cstddef> +#include <cstdint> +#include <cstdio> +#include <cstdlib> +#include <cstring> +#include <ctime> +#include <cwchar> + +#include <algorithm> +#include <chrono> +#include <exception> +#include <functional> +#include <iterator> +#include <limits> +#include <locale> +#include <memory> +#include <ostream> +#include <sstream> +#include <stdexcept> +#include <string> +#include <string_view> +#include <system_error> +#include <type_traits> +#include <utility> +#include <vector> + +#if _MSC_VER +# include <intrin.h> +#endif +#if defined __APPLE__ || defined(__FreeBSD__) +# include <xlocale.h> +#endif +#if __has_include(<winapifamily.h>) +# include <winapifamily.h> +#endif +#if (__has_include(<fcntl.h>) || defined(__APPLE__) || \ + defined(__linux__)) && \ + (!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# include <fcntl.h> +# include <sys/stat.h> +# include <sys/types.h> +# ifndef _WIN32 +# include <unistd.h> +# else +# include <io.h> +# endif +#endif +#ifdef _WIN32 +# include <windows.h> +#endif + +export module fmt; + +#define FMT_MODULE_EXPORT export +#define FMT_MODULE_EXPORT_BEGIN export { +#define FMT_MODULE_EXPORT_END } +#define FMT_BEGIN_DETAIL_NAMESPACE \ + } \ + namespace detail { +#define FMT_END_DETAIL_NAMESPACE \ + } \ + export { + +// all library-provided declarations and definitions +// must be in the module purview to be exported +#include "fmt/format.h" +#include "fmt/args.h" +#include "fmt/color.h" +#include "fmt/compile.h" +#include "fmt/locale.h" +#include "fmt/chrono.h" +#include "fmt/printf.h" +#include "fmt/os.h" + +module : private; + +#include "format.cc" +#include "os.cc" diff --git a/deps/fmt/src/format.cc b/deps/fmt/src/format.cc new file mode 100644 index 0000000000..618aa07d0b --- /dev/null +++ b/deps/fmt/src/format.cc @@ -0,0 +1,97 @@ +// Formatting library for C++ +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/format-inl.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +template <typename T> +int format_float(char* buf, std::size_t size, const char* format, int precision, + T value) { +#ifdef FMT_FUZZ + if (precision > 100000) + throw std::runtime_error( + "fuzz mode - avoid large allocation inside snprintf"); +#endif + // Suppress the warning about nonliteral format string. + int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF; + return precision < 0 ? snprintf_ptr(buf, size, format, value) + : snprintf_ptr(buf, size, format, precision, value); +} + +template FMT_API dragonbox::decimal_fp<float> dragonbox::to_decimal(float x) + FMT_NOEXCEPT; +template FMT_API dragonbox::decimal_fp<double> dragonbox::to_decimal(double x) + FMT_NOEXCEPT; + +// DEPRECATED! This function exists for ABI compatibility. +template <typename Char> +typename basic_format_context<std::back_insert_iterator<buffer<Char>>, + Char>::iterator +vformat_to(buffer<Char>& buf, basic_string_view<Char> format_str, + basic_format_args<basic_format_context< + std::back_insert_iterator<buffer<type_identity_t<Char>>>, + type_identity_t<Char>>> + args) { + using iterator = std::back_insert_iterator<buffer<char>>; + using context = basic_format_context< + std::back_insert_iterator<buffer<type_identity_t<Char>>>, + type_identity_t<Char>>; + auto out = iterator(buf); + format_handler<iterator, Char, context> h(out, format_str, args, {}); + parse_format_string<false>(format_str, h); + return out; +} +template basic_format_context<std::back_insert_iterator<buffer<char>>, + char>::iterator +vformat_to(buffer<char>&, string_view, + basic_format_args<basic_format_context< + std::back_insert_iterator<buffer<type_identity_t<char>>>, + type_identity_t<char>>>); +} // namespace detail + +// Workaround a bug in MSVC2013 that prevents instantiation of format_float. +int (*instantiate_format_float)(double, int, detail::float_specs, + detail::buffer<char>&) = detail::format_float; + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template FMT_API detail::locale_ref::locale_ref(const std::locale& loc); +template FMT_API std::locale detail::locale_ref::get<std::locale>() const; +#endif + +// Explicit instantiations for char. + +template FMT_API std::string detail::grouping_impl<char>(locale_ref); +template FMT_API char detail::thousands_sep_impl(locale_ref); +template FMT_API char detail::decimal_point_impl(locale_ref); + +template FMT_API void detail::buffer<char>::append(const char*, const char*); + +template FMT_API void detail::vformat_to( + detail::buffer<char>&, string_view, + basic_format_args<FMT_BUFFER_CONTEXT(char)>, detail::locale_ref); + +template FMT_API int detail::snprintf_float(double, int, detail::float_specs, + detail::buffer<char>&); +template FMT_API int detail::snprintf_float(long double, int, + detail::float_specs, + detail::buffer<char>&); +template FMT_API int detail::format_float(double, int, detail::float_specs, + detail::buffer<char>&); +template FMT_API int detail::format_float(long double, int, detail::float_specs, + detail::buffer<char>&); + +// Explicit instantiations for wchar_t. + +template FMT_API std::string detail::grouping_impl<wchar_t>(locale_ref); +template FMT_API wchar_t detail::thousands_sep_impl(locale_ref); +template FMT_API wchar_t detail::decimal_point_impl(locale_ref); + +template FMT_API void detail::buffer<wchar_t>::append(const wchar_t*, + const wchar_t*); +FMT_END_NAMESPACE diff --git a/deps/fmt/fmt/posix.cc b/deps/fmt/src/os.cc index 69c27819d2..6474d455e2 100644 --- a/deps/fmt/fmt/posix.cc +++ b/deps/fmt/src/os.cc @@ -1,4 +1,4 @@ -// A C++ interface to POSIX functions. +// Formatting library for C++ - optional OS-specific functionality // // Copyright (c) 2012 - 2016, Victor Zverovich // All rights reserved. @@ -10,37 +10,42 @@ # define _CRT_SECURE_NO_WARNINGS #endif -#include "fmt/posix.h" +#include "fmt/os.h" -#include <limits.h> -#include <sys/stat.h> -#include <sys/types.h> +#include <climits> -#ifndef _WIN32 -# include <unistd.h> -#else -# ifndef WIN32_LEAN_AND_MEAN -# define WIN32_LEAN_AND_MEAN -# endif -# include <io.h> -# include <windows.h> +#if FMT_USE_FCNTL +# include <sys/stat.h> +# include <sys/types.h> -# define O_CREAT _O_CREAT -# define O_TRUNC _O_TRUNC +# ifndef _WIN32 +# include <unistd.h> +# else +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <io.h> -# ifndef S_IRUSR -# define S_IRUSR _S_IREAD -# endif +# define O_CREAT _O_CREAT +# define O_TRUNC _O_TRUNC -# ifndef S_IWUSR -# define S_IWUSR _S_IWRITE -# endif +# ifndef S_IRUSR +# define S_IRUSR _S_IREAD +# endif -# ifdef __MINGW32__ -# define _SH_DENYNO 0x40 -# endif +# ifndef S_IWUSR +# define S_IWUSR _S_IWRITE +# endif -#endif // _WIN32 +# ifdef __MINGW32__ +# define _SH_DENYNO 0x40 +# endif +# endif // _WIN32 +#endif // FMT_USE_FCNTL + +#ifdef _WIN32 +# include <windows.h> +#endif #ifdef fileno # undef fileno @@ -49,16 +54,16 @@ namespace { #ifdef _WIN32 // Return type of read and write functions. -typedef int RWResult; +using rwresult = int; // On Windows the count argument to read and write is unsigned, so convert // it from size_t preventing integer overflow. inline unsigned convert_rwcount(std::size_t count) { return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX; } -#else +#elif FMT_USE_FCNTL // Return type of read and write functions. -typedef ssize_t RWResult; +using rwresult = ssize_t; inline std::size_t convert_rwcount(std::size_t count) { return count; } #endif @@ -66,6 +71,118 @@ inline std::size_t convert_rwcount(std::size_t count) { return count; } FMT_BEGIN_NAMESPACE +#ifdef _WIN32 +detail::utf16_to_utf8::utf16_to_utf8(wstring_view s) { + if (int error_code = convert(s)) { + FMT_THROW(windows_error(error_code, + "cannot convert string from UTF-16 to UTF-8")); + } +} + +int detail::utf16_to_utf8::convert(wstring_view s) { + if (s.size() > INT_MAX) return ERROR_INVALID_PARAMETER; + int s_size = static_cast<int>(s.size()); + if (s_size == 0) { + // WideCharToMultiByte does not support zero length, handle separately. + buffer_.resize(1); + buffer_[0] = 0; + return 0; + } + + int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, nullptr, 0, + nullptr, nullptr); + if (length == 0) return GetLastError(); + buffer_.resize(length + 1); + length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, &buffer_[0], + length, nullptr, nullptr); + if (length == 0) return GetLastError(); + buffer_[length] = 0; + return 0; +} + +namespace detail { + +class system_message { + system_message(const system_message&) = delete; + void operator=(const system_message&) = delete; + + unsigned long result_; + wchar_t* message_; + + static bool is_whitespace(wchar_t c) FMT_NOEXCEPT { + return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0'; + } + + public: + explicit system_message(unsigned long error_code) + : result_(0), message_(nullptr) { + result_ = FormatMessageW( + FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + reinterpret_cast<wchar_t*>(&message_), 0, nullptr); + if (result_ != 0) { + while (result_ != 0 && is_whitespace(message_[result_ - 1])) { + --result_; + } + } + } + ~system_message() { LocalFree(message_); } + explicit operator bool() const FMT_NOEXCEPT { return result_ != 0; } + operator wstring_view() const FMT_NOEXCEPT { + return wstring_view(message_, result_); + } +}; + +class utf8_system_category final : public std::error_category { + public: + const char* name() const FMT_NOEXCEPT override { return "system"; } + std::string message(int error_code) const override { + system_message msg(error_code); + if (msg) { + utf16_to_utf8 utf8_message; + if (utf8_message.convert(msg) == ERROR_SUCCESS) { + return utf8_message.str(); + } + } + return "unknown error"; + } +}; + +} // namespace detail + +FMT_API const std::error_category& system_category() FMT_NOEXCEPT { + static const detail::utf8_system_category category; + return category; +} + +std::system_error vwindows_error(int err_code, string_view format_str, + format_args args) { + auto ec = std::error_code(err_code, system_category()); + throw std::system_error(ec, vformat(format_str, args)); +} + +void detail::format_windows_error(detail::buffer<char>& out, int error_code, + const char* message) FMT_NOEXCEPT { + FMT_TRY { + system_message msg(error_code); + if (msg) { + utf16_to_utf8 utf8_message; + if (utf8_message.convert(msg) == ERROR_SUCCESS) { + format_to(buffer_appender<char>(out), "{}: {}", message, utf8_message); + return; + } + } + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +void report_windows_error(int error_code, const char* message) FMT_NOEXCEPT { + report_error(detail::format_windows_error, error_code, message); +} +#endif // _WIN32 + buffered_file::~buffered_file() FMT_NOEXCEPT { if (file_ && FMT_SYSTEM(fclose(file_)) != 0) report_system_error(errno, "cannot close file"); @@ -94,14 +211,15 @@ int buffered_file::fileno() const { return fd; } +#if FMT_USE_FCNTL file::file(cstring_view path, int oflag) { int mode = S_IRUSR | S_IWUSR; -#if defined(_WIN32) && !defined(__MINGW32__) +# if defined(_WIN32) && !defined(__MINGW32__) fd_ = -1; FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode)); -#else +# else FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode))); -#endif +# endif if (fd_ == -1) FMT_THROW(system_error(errno, "cannot open file {}", path.c_str())); } @@ -123,7 +241,7 @@ void file::close() { } long long file::size() const { -#ifdef _WIN32 +# ifdef _WIN32 // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT // is less than 0x0500 as is the case with some default MinGW builds. // Both functions support large file sizes. @@ -137,29 +255,29 @@ long long file::size() const { } unsigned long long long_size = size_upper; return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower; -#else - typedef struct stat Stat; +# else + using Stat = struct stat; Stat file_stat = Stat(); if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1) FMT_THROW(system_error(errno, "cannot get file attributes")); static_assert(sizeof(long long) >= sizeof(file_stat.st_size), "return type of file::size is not large enough"); return file_stat.st_size; -#endif +# endif } std::size_t file::read(void* buffer, std::size_t count) { - RWResult result = 0; + rwresult result = 0; FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count)))); if (result < 0) FMT_THROW(system_error(errno, "cannot read from file")); - return internal::to_unsigned(result); + return detail::to_unsigned(result); } std::size_t file::write(const void* buffer, std::size_t count) { - RWResult result = 0; + rwresult result = 0; FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count)))); if (result < 0) FMT_THROW(system_error(errno, "cannot write to file")); - return internal::to_unsigned(result); + return detail::to_unsigned(result); } file file::dup(int fd) { @@ -180,10 +298,10 @@ void file::dup2(int fd) { } } -void file::dup2(int fd, error_code& ec) FMT_NOEXCEPT { +void file::dup2(int fd, std::error_code& ec) FMT_NOEXCEPT { int result = 0; FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); - if (result == -1) ec = error_code(errno); + if (result == -1) ec = std::error_code(errno, std::generic_category()); } void file::pipe(file& read_end, file& write_end) { @@ -192,15 +310,15 @@ void file::pipe(file& read_end, file& write_end) { read_end.close(); write_end.close(); int fds[2] = {}; -#ifdef _WIN32 +# ifdef _WIN32 // Make the default pipe capacity same as on Linux 2.6.11+. enum { DEFAULT_CAPACITY = 65536 }; int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY)); -#else +# else // Don't retry as the pipe function doesn't return EINTR. // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html int result = FMT_POSIX_CALL(pipe(fds)); -#endif +# endif if (result != 0) FMT_THROW(system_error(errno, "cannot create pipe")); // The following assignments don't throw because read_fd and write_fd // are closed. @@ -209,8 +327,12 @@ void file::pipe(file& read_end, file& write_end) { } buffered_file file::fdopen(const char* mode) { - // Don't retry as fdopen doesn't return EINTR. +// Don't retry as fdopen doesn't return EINTR. +# if defined(__MINGW32__) && defined(_POSIX_) + FILE* f = ::fdopen(fd_, mode); +# else FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode)); +# endif if (!f) FMT_THROW( system_error(errno, "cannot associate stream with file descriptor")); @@ -220,14 +342,19 @@ buffered_file file::fdopen(const char* mode) { } long getpagesize() { -#ifdef _WIN32 +# ifdef _WIN32 SYSTEM_INFO si; GetSystemInfo(&si); return si.dwPageSize; -#else +# else long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE)); if (size < 0) FMT_THROW(system_error(errno, "cannot get memory page size")); return size; -#endif +# endif +} + +FMT_API void ostream::grow(size_t) { + if (this->size() == this->capacity()) flush(); } +#endif // FMT_USE_FCNTL FMT_END_NAMESPACE |