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55 lines
2.4 KiB
C++
55 lines
2.4 KiB
C++
/*
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* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TRINITYCORE_QUERY_RESULT_STRUCTURED_H
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#define TRINITYCORE_QUERY_RESULT_STRUCTURED_H
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/comma_if.hpp>
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#include <boost/preprocessor/facilities/empty.hpp>
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#include <boost/preprocessor/seq/enum.hpp>
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#include <boost/preprocessor/seq/for_each.hpp>
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#include <boost/preprocessor/seq/for_each_i.hpp>
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#include <boost/preprocessor/stringize.hpp>
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#define DEFINE_FIELD_ACCESSOR_CACHE_FIELD_INDEX_INIT(r, data, i, field) BOOST_PP_COMMA_IF(i) field(result.GetFieldMetadata(BOOST_PP_STRINGIZE(field)).Index)
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#define DEFINE_FIELD_ACCESSOR_CACHE_FIELD(r, data, field) Field const& field() const\
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{\
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return Fields[indexes.field];\
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}
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#define DEFINE_FIELD_ACCESSOR_CACHE(namespace_name, struct_name, result_type, fields_list) \
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struct namespace_name struct_name \
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{ \
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struct Indexes\
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{\
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Indexes(result_type const& result) :\
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BOOST_PP_SEQ_FOR_EACH_I(DEFINE_FIELD_ACCESSOR_CACHE_FIELD_INDEX_INIT, ~, fields_list) { }\
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std::size_t BOOST_PP_SEQ_ENUM(fields_list);\
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};\
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BOOST_PP_SEQ_FOR_EACH(DEFINE_FIELD_ACCESSOR_CACHE_FIELD, ~, fields_list) \
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struct_name(result_type const& result) : Fields(result.Fetch()), indexes(indexes_impl(result)) { }\
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Field* Fields; \
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static Indexes const& indexes_impl(result_type const& result) noexcept { static Indexes const instance(result); return instance; }\
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Indexes const& indexes;\
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}
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#define DEFINE_FIELD_ACCESSOR_CACHE_ANONYMOUS(result_type, fields_list) DEFINE_FIELD_ACCESSOR_CACHE(BOOST_PP_EMPTY(), BOOST_PP_CAT(FieldAccessors, __LINE__), result_type, fields_list)
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#endif // TRINITYCORE_QUERY_RESULT_STRUCTURED_H
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