1/* 2 * Copyright (C) 2013 Google, Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef HTMLIdentifier_h 27#define HTMLIdentifier_h 28 29#if ENABLE(THREADED_HTML_PARSER) 30 31#include <wtf/text/WTFString.h> 32 33namespace WebCore { 34 35class QualifiedName; 36 37enum CharacterWidth { 38 Likely8Bit, 39 Force8Bit, 40 Force16Bit 41}; 42 43class HTMLIdentifier { 44public: 45 HTMLIdentifier() : m_index(0) { } 46 47 template<size_t inlineCapacity> 48 HTMLIdentifier(const Vector<UChar, inlineCapacity>& vector, CharacterWidth width) 49 : m_index(findIndex(vector.data(), vector.size())) 50 { 51 if (m_index != invalidIndex) 52 return; 53 if (width == Likely8Bit) 54 m_string = StringImpl::create8BitIfPossible(vector); 55 else if (width == Force8Bit) 56 m_string = String::make8BitFrom16BitSource(vector); 57 else 58 m_string = String(vector); 59 } 60 61 // asString should only be used on the main thread. 62 const String& asString() const; 63 // asStringImpl() is safe to call from any thread. 64 const StringImpl* asStringImpl() const; 65 66 static void init(); 67 68 bool isSafeToSendToAnotherThread() const { return m_string.isSafeToSendToAnotherThread(); } 69 70#ifndef NDEBUG 71 static bool hasIndex(const StringImpl*); 72#endif 73 74private: 75 static const unsigned invalidIndex = -1; 76 static unsigned maxNameLength; 77 static unsigned findIndex(const UChar* characters, unsigned length); 78 static void addNames(QualifiedName** names, unsigned namesCount, unsigned indexOffset); 79 80 // FIXME: This could be a union. 81 unsigned m_index; 82 String m_string; 83}; 84 85} 86 87#endif // ENABLE(THREADED_HTML_PARSER) 88 89#endif 90