// 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 "CSSParserToken.h" #include <wtf/Forward.h> namespace WebCore { // A CSSParserTokenRange is an iterator over a subrange of a vector of CSSParserTokens. // Accessing outside of the range will return an endless stream of EOF tokens. // This class refers to half-open intervals [first, last). class CSSParserTokenRange { public: template<size_t inlineBuffer> CSSParserTokenRange(const Vector<CSSParserToken, inlineBuffer>& vector) : m_first(vector.begin()) , m_last(vector.end()) { } // This should be called on a range with tokens returned by that range. CSSParserTokenRange makeSubRange(const CSSParserToken* first, const CSSParserToken* last) const; bool atEnd() const { return m_first == m_last; } const CSSParserToken* end() const { return m_last; } const CSSParserToken& peek(unsigned offset = 0) const { if (m_first + offset >= m_last) return eofToken(); return *(m_first + offset); } const CSSParserToken& consume() { if (m_first == m_last) return eofToken(); return *m_first++; } const CSSParserToken& consumeIncludingWhitespace() { const CSSParserToken& result = consume(); consumeWhitespace(); return result; } // The returned range doesn't include the brackets CSSParserTokenRange consumeBlock(); CSSParserTokenRange consumeBlockCheckingForEditability(StyleSheetContents*); void consumeComponentValue(); void consumeWhitespace() { while (peek().type() == WhitespaceToken) ++m_first; } String serialize() const; const CSSParserToken* begin() const { return m_first; } static CSSParserToken& eofToken(); private: CSSParserTokenRange(const CSSParserToken* first, const CSSParserToken* last) : m_first(first) , m_last(last) { } const CSSParserToken* m_first; const CSSParserToken* m_last; }; } // namespace WebCore