| // Copyright 2014 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 "CSSParserSelector.h" |
| #include "CSSParserTokenRange.h" |
| #include <memory> |
| |
| namespace WebCore { |
| |
| struct CSSParserContext; |
| class CSSSelectorList; |
| class StyleSheetContents; |
| |
| // FIXME: We should consider building CSSSelectors directly instead of using |
| // the intermediate CSSParserSelector. |
| class CSSSelectorParser { |
| public: |
| static CSSSelectorList parseSelector(CSSParserTokenRange, const CSSParserContext&, StyleSheetContents*); |
| |
| static bool consumeANPlusB(CSSParserTokenRange&, std::pair<int, int>&); |
| |
| private: |
| CSSSelectorParser(const CSSParserContext&, StyleSheetContents*); |
| |
| // These will all consume trailing comments if successful |
| |
| CSSSelectorList consumeComplexSelectorList(CSSParserTokenRange&); |
| CSSSelectorList consumeCompoundSelectorList(CSSParserTokenRange&); |
| |
| std::unique_ptr<CSSParserSelector> consumeComplexSelector(CSSParserTokenRange&); |
| std::unique_ptr<CSSParserSelector> consumeCompoundSelector(CSSParserTokenRange&); |
| // This doesn't include element names, since they're handled specially |
| std::unique_ptr<CSSParserSelector> consumeSimpleSelector(CSSParserTokenRange&); |
| |
| bool consumeName(CSSParserTokenRange&, AtomString& name, AtomString& namespacePrefix); |
| |
| // These will return nullptr when the selector is invalid |
| std::unique_ptr<CSSParserSelector> consumeId(CSSParserTokenRange&); |
| std::unique_ptr<CSSParserSelector> consumeClass(CSSParserTokenRange&); |
| std::unique_ptr<CSSParserSelector> consumePseudo(CSSParserTokenRange&); |
| std::unique_ptr<CSSParserSelector> consumeAttribute(CSSParserTokenRange&); |
| |
| CSSSelector::RelationType consumeCombinator(CSSParserTokenRange&); |
| CSSSelector::Match consumeAttributeMatch(CSSParserTokenRange&); |
| CSSSelector::AttributeMatchType consumeAttributeFlags(CSSParserTokenRange&); |
| |
| const AtomString& defaultNamespace() const; |
| const AtomString& determineNamespace(const AtomString& prefix); |
| void prependTypeSelectorIfNeeded(const AtomString& namespacePrefix, const AtomString& elementName, CSSParserSelector*); |
| static std::unique_ptr<CSSParserSelector> addSimpleSelectorToCompound(std::unique_ptr<CSSParserSelector> compoundSelector, std::unique_ptr<CSSParserSelector> simpleSelector); |
| static std::unique_ptr<CSSParserSelector> splitCompoundAtImplicitShadowCrossingCombinator(std::unique_ptr<CSSParserSelector> compoundSelector, const CSSParserContext&); |
| |
| const CSSParserContext& m_context; |
| RefPtr<StyleSheetContents> m_styleSheet; // FIXME: Should be const |
| |
| bool m_failedParsing = false; |
| bool m_disallowPseudoElements = false; |
| |
| class DisallowPseudoElementsScope { |
| WTF_MAKE_NONCOPYABLE(DisallowPseudoElementsScope); |
| public: |
| DisallowPseudoElementsScope(CSSSelectorParser* parser) |
| : m_parser(parser), m_wasDisallowed(m_parser->m_disallowPseudoElements) |
| { |
| m_parser->m_disallowPseudoElements = true; |
| } |
| |
| ~DisallowPseudoElementsScope() |
| { |
| m_parser->m_disallowPseudoElements = m_wasDisallowed; |
| } |
| |
| private: |
| CSSSelectorParser* m_parser; |
| bool m_wasDisallowed; |
| }; |
| }; |
| |
| } // namespace WebCore |
| |