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/*
* Copyright 2003-2018 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_AND_SONG_FILTER_HXX
#define MPD_AND_SONG_FILTER_HXX
#include "ISongFilter.hxx"
#include "util/Compiler.h"
#include <list>
/**
* Combine multiple #ISongFilter instances with logical "and".
*/
class AndSongFilter final : public ISongFilter {
std::list<ISongFilterPtr> items;
friend void OptimizeSongFilter(AndSongFilter &) noexcept;
friend ISongFilterPtr OptimizeSongFilter(ISongFilterPtr) noexcept;
public:
const auto &GetItems() const noexcept {
return items;
}
template<typename I>
void AddItem(I &&_item) {
items.emplace_back(std::forward<I>(_item));
}
gcc_pure
bool IsEmpty() const noexcept {
return items.empty();
}
/* virtual methods from ISongFilter */
ISongFilterPtr Clone() const noexcept override;
std::string ToExpression() const noexcept override;
bool Match(const LightSong &song) const noexcept override;
};
#endif