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6b2c0b2c58
This CL makes the parser yield before non-import start tags if there are outstanding imports. This will let use remove the upgrade path from custom elements because we can require the registration to happen before the tree building. R=eseidel@chromium.org Review URL: https://codereview.chromium.org/814173005
142 lines
4.9 KiB
C++
142 lines
4.9 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 SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_
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#define SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_
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#include "base/callback.h"
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#include "base/memory/weak_ptr.h"
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#include "sky/engine/core/dom/DocumentParser.h"
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#include "sky/engine/core/fetch/ResourceClient.h"
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#include "sky/engine/core/frame/UseCounter.h"
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#include "sky/engine/core/html/parser/CompactHTMLToken.h"
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#include "sky/engine/core/html/parser/HTMLInputStream.h"
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#include "sky/engine/core/html/parser/HTMLScriptRunner.h"
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#include "sky/engine/core/html/parser/HTMLToken.h"
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#include "sky/engine/core/html/parser/HTMLTokenizer.h"
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#include "sky/engine/core/html/parser/TextResourceDecoder.h"
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#include "sky/engine/platform/text/SegmentedString.h"
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#include "sky/engine/wtf/Deque.h"
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#include "sky/engine/wtf/OwnPtr.h"
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#include "sky/engine/wtf/WeakPtr.h"
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#include "sky/engine/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,
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const base::Closure& completionCallback) 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 resumeAfterWaitingForImports() 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 stopBackgroundParser();
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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 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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base::Closure m_completionCallback;
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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 // SKY_ENGINE_CORE_HTML_PARSER_HTMLDOCUMENTPARSER_H_
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