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Add missing header

This commit is contained in:
halx99 2020-02-23 21:36:36 +08:00
parent 2086cf04d3
commit ab84b8be19
1 changed files with 89 additions and 0 deletions
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cocos/base/bitmask.h Normal file
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/****************************************************************************
Copyright (c) 2020 c4games.com.
http://www.cocos2d-x.org
Purpose: Make bitmask operators could be use at different namespace,
the other implementation CCEnumClass.h can't handle.
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.
****************************************************************************/
#pragma once
#include <type_traits>
#if !defined(_STD)
#define _STD ::std::
#endif
// BITMASK OPERATIONS, modified from msvc++ <type_traits> for cross-platform compiling.
#define CC_ENABLE_BITMASK_OPS(_BITMASK) \
constexpr _BITMASK operator&(_BITMASK _Left, _BITMASK _Right) noexcept { /* return _Left & _Right */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(static_cast<_IntTy>(_Left) & static_cast<_IntTy>(_Right)); \
} \
\
constexpr _BITMASK operator|(_BITMASK _Left, _BITMASK _Right) noexcept { /* return _Left | _Right */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(static_cast<_IntTy>(_Left) | static_cast<_IntTy>(_Right)); \
} \
\
constexpr _BITMASK operator^(_BITMASK _Left, _BITMASK _Right) noexcept { /* return _Left ^ _Right */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(static_cast<_IntTy>(_Left) ^ static_cast<_IntTy>(_Right)); \
} \
\
constexpr _BITMASK& operator&=(_BITMASK& _Left, _BITMASK _Right) noexcept { /* return _Left &= _Right */ \
return _Left = _Left & _Right; \
} \
\
constexpr _BITMASK& operator|=(_BITMASK& _Left, _BITMASK _Right) noexcept { /* return _Left |= _Right */ \
return _Left = _Left | _Right; \
} \
\
constexpr _BITMASK& operator^=(_BITMASK& _Left, _BITMASK _Right) noexcept { /* return _Left ^= _Right */ \
return _Left = _Left ^ _Right; \
} \
\
constexpr _BITMASK operator~(_BITMASK _Left) noexcept { /* return ~_Left */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(~static_cast<_IntTy>(_Left)); \
} \
\
constexpr bool _Bitmask_includes( \
_BITMASK _Left, _BITMASK _Elements) noexcept { /* return (_Left & _Elements) != _BITMASK{} */ \
return (_Left & _Elements) != _BITMASK{}; \
} \
\
constexpr bool _Bitmask_includes_all( \
_BITMASK _Left, _BITMASK _Elements) noexcept { /* return (_Left & _Elements) == _Elements */ \
return (_Left & _Elements) == _Elements; \
}
// BITSHIFT OPERATIONS, inspired from msvc++ <type_traits>.
#define CC_ENABLE_BITSHIFT_OPS(_BITMASK) \
constexpr _BITMASK operator>>(_BITMASK _Left, _BITMASK _Right) noexcept { /* return _Left & _Right */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(static_cast<_IntTy>(_Left) >> static_cast<_IntTy>(_Right)); \
} \
\
constexpr _BITMASK operator<<(_BITMASK _Left, _BITMASK _Right) noexcept { /* return _Left & _Right */ \
using _IntTy = _STD underlying_type<_BITMASK>::type; \
return static_cast<_BITMASK>(static_cast<_IntTy>(_Left) << static_cast<_IntTy>(_Right)); \
}