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70c382c012
The background parser was the last client. R=abarth@chromium.org Review URL: https://codereview.chromium.org/684813003
145 lines
4.8 KiB
C++
145 lines
4.8 KiB
C++
/*
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* Copyright (C) 2010 Google, Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef HTMLDocumentParser_h
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#define HTMLDocumentParser_h
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#include "base/memory/weak_ptr.h"
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#include "core/dom/DocumentParser.h"
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#include "core/fetch/ResourceClient.h"
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#include "core/frame/UseCounter.h"
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#include "core/html/parser/CompactHTMLToken.h"
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#include "core/html/parser/HTMLInputStream.h"
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#include "core/html/parser/HTMLScriptRunner.h"
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#include "core/html/parser/HTMLToken.h"
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#include "core/html/parser/HTMLTokenizer.h"
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#include "core/html/parser/TextResourceDecoder.h"
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#include "platform/text/SegmentedString.h"
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#include "wtf/Deque.h"
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#include "wtf/OwnPtr.h"
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#include "wtf/WeakPtr.h"
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#include "wtf/text/TextPosition.h"
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namespace blink {
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class BackgroundHTMLParser;
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class CompactHTMLToken;
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class Document;
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class Element;
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class HTMLDocument;
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class HTMLParserScheduler;
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class HTMLTreeBuilder;
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class ScriptController;
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class ScriptSourceCode;
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class PumpSession;
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class HTMLDocumentParser : public DocumentParser {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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static PassRefPtr<HTMLDocumentParser> create(HTMLDocument& document, bool reportErrors)
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{
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return adoptRef(new HTMLDocumentParser(document, reportErrors));
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}
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virtual ~HTMLDocumentParser();
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void parse(mojo::ScopedDataPipeConsumerHandle) override;
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// Exposed for HTMLParserScheduler
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void resumeParsingAfterYield();
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TextPosition textPosition() const;
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OrdinalNumber lineNumber() const;
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struct ParsedChunk {
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OwnPtr<CompactHTMLTokenStream> tokens;
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};
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void didReceiveParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>);
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bool isWaitingForScripts() const;
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bool isExecutingScript() const;
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void executeScriptsWaitingForResources();
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UseCounter* useCounter() { return UseCounter::getFrom(contextForParsingSession()); }
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private:
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HTMLDocumentParser(HTMLDocument&, bool reportErrors);
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HTMLTreeBuilder* treeBuilder() const { return m_treeBuilder.get(); }
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virtual HTMLDocumentParser* asHTMLDocumentParser() override final { return this; }
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// DocumentParser
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virtual void detach() override final;
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virtual bool processingData() const override final;
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virtual void prepareToStopParsing() override final;
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virtual void stopParsing() override final;
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bool hasInsertionPoint();
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void startBackgroundParser();
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void stopBackgroundParser();
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void validateSpeculations(PassOwnPtr<ParsedChunk> lastChunk);
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void processParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>);
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void pumpPendingSpeculations();
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Document* contextForParsingSession();
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void constructTreeFromHTMLToken(HTMLToken&);
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void constructTreeFromCompactHTMLToken(const CompactHTMLToken&);
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void runScriptsForPausedTreeBuilder();
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void resumeParsingAfterScriptExecution();
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void attemptToEnd();
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void endIfDelayed();
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void end();
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bool isParsingFragment() const;
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bool isScheduledForResume() const;
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bool inPumpSession() const { return m_pumpSessionNestingLevel > 0; }
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bool shouldDelayEnd() const { return inPumpSession() || isWaitingForScripts() || isScheduledForResume() || isExecutingScript(); }
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OwnPtr<HTMLTreeBuilder> m_treeBuilder;
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OwnPtr<HTMLParserScheduler> m_parserScheduler;
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TextPosition m_textPosition;
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HTMLScriptRunner m_scriptRunner;
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OwnPtr<ParsedChunk> m_lastChunkBeforeScript;
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Deque<OwnPtr<ParsedChunk> > m_speculations;
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base::WeakPtrFactory<HTMLDocumentParser> m_weakFactory;
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base::WeakPtr<BackgroundHTMLParser> m_backgroundParser;
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bool m_isFragment;
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bool m_endWasDelayed;
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bool m_haveBackgroundParser;
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unsigned m_pumpSessionNestingLevel;
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};
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}
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#endif
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