97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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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 2 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_TAG_MASK_HXX
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#define MPD_TAG_MASK_HXX
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#include "Type.h"
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#include <cstdint>
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class TagMask {
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typedef uint_least32_t mask_t;
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mask_t value;
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explicit constexpr TagMask(uint_least32_t _value) noexcept
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:value(_value) {}
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public:
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TagMask() = default;
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constexpr TagMask(TagType tag) noexcept
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:value(mask_t(1) << mask_t(tag)) {}
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static constexpr TagMask None() noexcept {
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return TagMask(mask_t(0));
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}
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static constexpr TagMask All() noexcept {
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return ~None();
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}
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constexpr TagMask operator~() const noexcept {
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return TagMask(~value);
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}
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constexpr TagMask operator&(TagMask other) const noexcept {
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return TagMask(value & other.value);
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}
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constexpr TagMask operator|(TagMask other) const noexcept {
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return TagMask(value | other.value);
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}
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constexpr TagMask operator^(TagMask other) const noexcept {
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return TagMask(value ^ other.value);
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}
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TagMask &operator&=(TagMask other) noexcept {
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value &= other.value;
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return *this;
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}
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TagMask &operator|=(TagMask other) noexcept {
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value |= other.value;
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return *this;
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}
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TagMask &operator^=(TagMask other) noexcept {
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value ^= other.value;
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return *this;
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}
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constexpr bool TestAny() const noexcept {
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return value != 0;
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}
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constexpr bool Test(TagType tag) const noexcept {
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return (*this & tag).TestAny();
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}
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void Set(TagType tag) noexcept {
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*this |= tag;
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}
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void Unset(TagType tag) noexcept {
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*this &= ~TagMask(tag);
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}
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};
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#endif
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