71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Copyright (C) 2016 Apple Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include "CSSParserToken.h"
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namespace WebCore {
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class CSSParserImpl;
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class CSSParserTokenRange;
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class CSSSupportsParser {
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public:
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enum SupportsResult {
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Unsupported = false,
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Supported = true,
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Invalid
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};
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enum SupportsParsingMode {
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ForAtRule,
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ForWindowCSS,
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};
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static SupportsResult supportsCondition(CSSParserTokenRange, CSSParserImpl&, SupportsParsingMode);
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private:
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CSSSupportsParser(CSSParserImpl& parser)
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: m_parser(parser) { }
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SupportsResult consumeCondition(CSSParserTokenRange);
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SupportsResult consumeNegation(CSSParserTokenRange);
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SupportsResult consumeSupportsFeatureOrGeneralEnclosed(CSSParserTokenRange&);
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// https://drafts.csswg.org/css-conditional-4/#typedef-supports-selector-fn
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// <supports-seletor-fn> = selector( <complex-selector> );
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SupportsResult consumeSupportsSelectorFunction(CSSParserTokenRange&);
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SupportsResult consumeConditionInParenthesis(CSSParserTokenRange&, CSSParserTokenType);
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CSSParserImpl& m_parser;
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};
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} // namespace WebCore
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