31 lines
648 B
C++
31 lines
648 B
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#ifndef MPD_I_SONG_FILTER_HXX
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#define MPD_I_SONG_FILTER_HXX
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#include <memory>
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#include <string>
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struct LightSong;
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class ISongFilter;
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using ISongFilterPtr = std::unique_ptr<ISongFilter>;
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class ISongFilter {
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public:
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virtual ~ISongFilter() noexcept = default;
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virtual ISongFilterPtr Clone() const noexcept = 0;
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/**
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* Convert this object into an "expression". This is
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* only useful for debugging.
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*/
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virtual std::string ToExpression() const noexcept = 0;
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[[gnu::pure]]
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virtual bool Match(const LightSong &song) const noexcept = 0;
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};
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#endif
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