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// Copyright 2015 The Chromium Authors. All rights reserved.
// Copyright (C) 2016 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#pragma once
#include "CSSParserEnum.h"
#include "CSSParserToken.h"
namespace WebCore {
class CSSParserImpl;
class CSSParserTokenRange;
class CSSSupportsParser {
public:
enum SupportsResult {
Unsupported = false,
Supported = true,
Invalid
};
enum class ParsingMode : bool {
ForAtRuleSupports,
AllowBareDeclarationAndGeneralEnclosed,
};
static SupportsResult supportsCondition(CSSParserTokenRange, CSSParserImpl&, ParsingMode);
private:
CSSSupportsParser(CSSParserImpl& parser)
: m_parser(parser)
{ }
SupportsResult consumeCondition(CSSParserTokenRange);
SupportsResult consumeNegation(CSSParserTokenRange);
SupportsResult consumeSupportsFunction(CSSParserTokenRange&);
SupportsResult consumeSupportsFeatureOrGeneralEnclosed(CSSParserTokenRange&);
// https://drafts.csswg.org/css-conditional-4/#typedef-supports-selector-fn
// <supports-selector-fn> = selector( <complex-selector> );
SupportsResult consumeSupportsSelectorFunction(CSSParserTokenRange&);
// https://drafts.csswg.org/css-conditional-5/#typedef-supports-font-format-fn
SupportsResult consumeSupportsFontFormatFunction(CSSParserTokenRange&);
// https://drafts.csswg.org/css-conditional-5/#typedef-supports-font-tech-fn
SupportsResult consumeSupportsFontTechFunction(CSSParserTokenRange&);
SupportsResult consumeConditionInParenthesis(CSSParserTokenRange&, CSSParserTokenType);
CSSParserImpl& m_parser;
};
} // namespace WebCore
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