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54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef COMMON_HASH_PTR_H
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#define COMMON_HASH_PTR_H
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#include "common/func.h"
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namespace Common {
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/**
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* @defgroup common_hashmap_ptr Hash table pointer
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* @ingroup common_hashmap
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*
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* @brief Template for a HashMap pointer.
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*
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* @{
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*/
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/**
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* Partial specialization of the Hash functor allowing to use pointers as HashMap keys.
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*/
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template<typename T>
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struct Hash<T *> {
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uint operator()(T * const &v) const {
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uint x = static_cast<uint>(reinterpret_cast<uintptr>(v));
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return x + (x >> 3);
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}
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};
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/** @} */
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} // End of namespace Common
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#endif
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