85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant 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 2 of the License, or
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(at your option) any later version.
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GtkRadiant 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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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined( INCLUDED_BITFLAGS_H )
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#define INCLUDED_BITFLAGS_H
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#include <type_traits>
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template <typename T, typename D>
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class BitFlags
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{
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public:
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static_assert( std::is_integral<T>::value, "Integer wrapper" );
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constexpr BitFlags( T flags = 0 ) noexcept
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: flags_( flags )
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{
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}
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constexpr explicit operator T() const
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{
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return flags_;
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}
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constexpr operator D() const
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{
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return D{ flags_ };
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}
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constexpr BitFlags& operator|=( BitFlags flags )
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{
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flags_ |= flags.flags_;
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return *this;
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}
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constexpr BitFlags& operator&=( BitFlags flags )
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{
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flags_ &= flags.flags_;
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return *this;
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}
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constexpr BitFlags operator~() const
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{
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return BitFlags( ~flags_ );
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}
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constexpr explicit operator bool() const
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{
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return flags_;
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}
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friend constexpr BitFlags operator|( BitFlags flags1, BitFlags flags2 )
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{
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return BitFlags( flags1.flags_ | flags2.flags_ );
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}
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friend constexpr BitFlags operator&( BitFlags flags1, BitFlags flags2 )
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{
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return BitFlags( flags1.flags_ & flags2.flags_ );
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}
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private:
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T flags_ = 0;
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};
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#endif
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