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a8cf7c7b43
This CL cleans up the DocumentParser interface to match what's actually needed by clients. As part of this cleanup, I've removed the asHTMLDocumentParser dynamic cast and just exposed virtual functions for the state folks were accessing via the dynamic cast. R=ojan@chromium.org, eseidel@chromium.org Review URL: https://codereview.chromium.org/722743002
141 lines
4.7 KiB
C++
141 lines
4.7 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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// From DocumentParser:
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void detach() override final;
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void prepareToStopParsing() override final;
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void stopParsing() override final;
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bool isWaitingForScripts() const override final;
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bool isExecutingScript() const override final;
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void executeScriptsWaitingForResources() override final;
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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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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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