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| 1 /* | |
| 2 * Copyright (C) 2010 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 APPLE 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 APPLE 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 SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_ | |
| 27 #define SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_ | |
| 28 | |
| 29 #include "base/callback.h" | |
| 30 #include "base/memory/weak_ptr.h" | |
| 31 #include "sky/engine/core/dom/DocumentParser.h" | |
| 32 #include "sky/engine/core/fetch/ResourceClient.h" | |
| 33 #include "sky/engine/core/html/parser/CompactHTMLToken.h" | |
| 34 #include "sky/engine/core/html/parser/HTMLInputStream.h" | |
| 35 #include "sky/engine/core/html/parser/HTMLScriptRunner.h" | |
| 36 #include "sky/engine/core/html/parser/HTMLToken.h" | |
| 37 #include "sky/engine/core/html/parser/HTMLTokenizer.h" | |
| 38 #include "sky/engine/core/html/parser/TextResourceDecoder.h" | |
| 39 #include "sky/engine/platform/text/SegmentedString.h" | |
| 40 #include "sky/engine/wtf/Deque.h" | |
| 41 #include "sky/engine/wtf/OwnPtr.h" | |
| 42 #include "sky/engine/wtf/WeakPtr.h" | |
| 43 #include "sky/engine/wtf/text/TextPosition.h" | |
| 44 | |
| 45 namespace blink { | |
| 46 | |
| 47 class BackgroundHTMLParser; | |
| 48 class CompactHTMLToken; | |
| 49 class Document; | |
| 50 class Element; | |
| 51 class HTMLParserScheduler; | |
| 52 class HTMLTreeBuilder; | |
| 53 class ScriptSourceCode; | |
| 54 | |
| 55 class PumpSession; | |
| 56 | |
| 57 class HTMLDocumentParser : public DocumentParser, public HTMLScriptRunnerHost { | |
| 58 WTF_MAKE_FAST_ALLOCATED; | |
| 59 public: | |
| 60 static PassRefPtr<HTMLDocumentParser> create(Document& document, bool report
Errors) | |
| 61 { | |
| 62 return adoptRef(new HTMLDocumentParser(document, reportErrors)); | |
| 63 } | |
| 64 virtual ~HTMLDocumentParser(); | |
| 65 | |
| 66 void parse(mojo::ScopedDataPipeConsumerHandle, | |
| 67 const base::Closure& completionCallback) override; | |
| 68 | |
| 69 // Exposed for HTMLParserScheduler | |
| 70 void resumeParsingAfterYield(); | |
| 71 | |
| 72 TextPosition textPosition() const; | |
| 73 OrdinalNumber lineNumber() const; | |
| 74 | |
| 75 struct ParsedChunk { | |
| 76 OwnPtr<CompactHTMLTokenStream> tokens; | |
| 77 }; | |
| 78 void didReceiveParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>); | |
| 79 | |
| 80 // From DocumentParser: | |
| 81 void detach() override final; | |
| 82 void prepareToStopParsing() override final; | |
| 83 void stopParsing() override final; | |
| 84 bool isWaitingForScripts() const override final; | |
| 85 bool isExecutingScript() const override final; | |
| 86 void resumeAfterWaitingForImports() override final; | |
| 87 | |
| 88 // From HTMLScriptRunnerHost: | |
| 89 void scriptExecutionCompleted(); | |
| 90 | |
| 91 private: | |
| 92 HTMLDocumentParser(Document&, bool reportErrors); | |
| 93 | |
| 94 HTMLTreeBuilder* treeBuilder() const { return m_treeBuilder.get(); } | |
| 95 | |
| 96 bool hasInsertionPoint(); | |
| 97 | |
| 98 void stopBackgroundParser(); | |
| 99 void processParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>); | |
| 100 void pumpPendingChunks(); | |
| 101 | |
| 102 Document* contextForParsingSession(); | |
| 103 | |
| 104 void constructTreeFromHTMLToken(HTMLToken&); | |
| 105 void constructTreeFromCompactHTMLToken(const CompactHTMLToken&); | |
| 106 | |
| 107 void runScriptsForPausedTreeBuilder(); | |
| 108 | |
| 109 void attemptToEnd(); | |
| 110 void endIfDelayed(); | |
| 111 void end(); | |
| 112 | |
| 113 bool isParsingFragment() const; | |
| 114 bool isScheduledForResume() const; | |
| 115 bool inPumpSession() const { return m_pumpSessionNestingLevel > 0; } | |
| 116 bool shouldDelayEnd() const { return inPumpSession() || isWaitingForScripts(
) || isScheduledForResume() || isExecutingScript(); } | |
| 117 | |
| 118 OwnPtr<HTMLTreeBuilder> m_treeBuilder; | |
| 119 OwnPtr<HTMLParserScheduler> m_parserScheduler; | |
| 120 TextPosition m_textPosition; | |
| 121 | |
| 122 OwnPtr<HTMLScriptRunner> m_scriptRunner; | |
| 123 | |
| 124 OwnPtr<ParsedChunk> m_lastChunkBeforeScript; | |
| 125 Deque<OwnPtr<ParsedChunk> > m_pendingChunks; | |
| 126 base::WeakPtrFactory<HTMLDocumentParser> m_weakFactory; | |
| 127 base::WeakPtr<BackgroundHTMLParser> m_backgroundParser; | |
| 128 | |
| 129 base::Closure m_completionCallback; | |
| 130 | |
| 131 bool m_isFragment; | |
| 132 bool m_endWasDelayed; | |
| 133 bool m_haveBackgroundParser; | |
| 134 unsigned m_pumpSessionNestingLevel; | |
| 135 }; | |
| 136 | |
| 137 } | |
| 138 | |
| 139 #endif // SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_ | |
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