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taynpg
2026-03-23 20:54:41 +08:00
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include/boost/detail/bitmask.hpp Normal file
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// boost/detail/bitmask.hpp ------------------------------------------------//
// Copyright Beman Dawes 2006
// Copyright Andrey Semashev 2025
// Distributed under the Boost Software License, Version 1.0
// http://www.boost.org/LICENSE_1_0.txt
// Usage: enum foo { a=1, b=2, c=4 };
// BOOST_BITMASK( foo )
//
// void f( foo arg );
// ...
// f( a | c );
//
// See [bitmask.types] in the C++ standard for the formal specification
#ifndef BOOST_BITMASK_HPP
#define BOOST_BITMASK_HPP
#include <boost/config.hpp>
#if defined(__has_builtin)
#if __has_builtin(__underlying_type)
#define BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(enum_type) __underlying_type(enum_type)
#endif
#endif
#if !defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE) && \
((defined(BOOST_GCC_VERSION) && (BOOST_GCC_VERSION >= 40700)) || (defined(_MSC_VER) && (_MSC_VER >= 1700)))
#define BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(enum_type) __underlying_type(enum_type)
#endif
#if !defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE)
#include <type_traits>
#endif
namespace boost {
namespace detail {
namespace bitmask {
#if defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE)
template< typename Enum >
using underlying_type_t = BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(Enum);
#elif (BOOST_CXX_VERSION >= 201402)
using std::underlying_type_t;
#else
template< typename Enum >
using underlying_type_t = typename std::underlying_type< Enum >::type;
#endif
}}}
#undef BOOST_BITMASK_DETAIL_UNDERLYING_TYPE
#define BOOST_BITMASK(Bitmask) \
\
inline BOOST_CONSTEXPR Bitmask operator| (Bitmask x, Bitmask y) BOOST_NOEXCEPT \
{ return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x) \
| static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); } \
\
inline BOOST_CONSTEXPR Bitmask operator& (Bitmask x, Bitmask y) BOOST_NOEXCEPT \
{ return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x) \
& static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); } \
\
inline BOOST_CONSTEXPR Bitmask operator^ (Bitmask x, Bitmask y) BOOST_NOEXCEPT \
{ return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x) \
^ static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); } \
\
inline BOOST_CONSTEXPR Bitmask operator~ (Bitmask x) BOOST_NOEXCEPT \
{ return static_cast< Bitmask >(~static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x)); } \
\
inline BOOST_CXX14_CONSTEXPR Bitmask& operator&=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT \
{ x = x & y; return x; } \
\
inline BOOST_CXX14_CONSTEXPR Bitmask& operator|=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT \
{ x = x | y; return x; } \
\
inline BOOST_CXX14_CONSTEXPR Bitmask& operator^=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT \
{ x = x ^ y; return x; } \
\
/* Boost extensions to [bitmask.types] */ \
\
inline BOOST_CONSTEXPR bool operator!(Bitmask x) BOOST_NOEXCEPT \
{ return !static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x); } \
\
BOOST_DEPRECATED("bitmask_set(enum) is deprecated, use !!enum or comparison operators instead") \
inline BOOST_CONSTEXPR bool bitmask_set(Bitmask x) BOOST_NOEXCEPT \
{ return !!x; }
#endif // BOOST_BITMASK_HPP