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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef IteratorPair_h__
#define IteratorPair_h__
#include "Define.h"
#include <utility>
namespace Trinity
{
/**
* @class IteratorPair
*
* @brief Utility class to enable range for loop syntax for multimap.equal_range uses
*/
template<class iterator, class end_iterator = iterator>
class IteratorPair
{
public:
constexpr IteratorPair() : _iterators() { }
constexpr IteratorPair(iterator first, end_iterator second) : _iterators(first, second) { }
constexpr IteratorPair(std::pair<iterator, end_iterator> iterators) : _iterators(iterators) { }
constexpr iterator begin() const { return _iterators.first; }
constexpr end_iterator end() const { return _iterators.second; }
private:
std::pair<iterator, end_iterator> _iterators;
};
namespace Containers
{
template<typename iterator, class end_iterator = iterator>
constexpr IteratorPair<iterator, end_iterator> MakeIteratorPair(iterator first, end_iterator second)
{
return { first, second };
}
template<typename iterator, class end_iterator = iterator>
constexpr IteratorPair<iterator, end_iterator> MakeIteratorPair(std::pair<iterator, end_iterator> iterators)
{
return iterators;
}
template<class M>
auto MapEqualRange(M& map, typename M::key_type const& key)
{
return MakeIteratorPair(map.equal_range(key));
}
}
//! namespace Containers
}
//! namespace Trinity
#endif // IteratorPair_h__
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