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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
98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
/*
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* Copyright (C) 2000 Peter Kelly (pmk@post.com)
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* Copyright (C) 2005, 2006 Apple Computer, Inc.
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* Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
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* Copyright (C) 2010 Google, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SKY_ENGINE_CORE_DOM_DOCUMENTPARSER_H_
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#define SKY_ENGINE_CORE_DOM_DOCUMENTPARSER_H_
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#include "base/callback_forward.h"
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#include "mojo/public/cpp/system/core.h"
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#include "sky/engine/platform/heap/Handle.h"
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#include "sky/engine/wtf/Forward.h"
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#include "sky/engine/wtf/RefCounted.h"
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#include "sky/engine/wtf/text/TextPosition.h"
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namespace blink {
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class Document;
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class SegmentedString;
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class HTMLDocumentParser;
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class TextResourceDecoder;
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class DocumentParser : public RefCounted<DocumentParser> {
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public:
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virtual ~DocumentParser();
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virtual void parse(mojo::ScopedDataPipeConsumerHandle,
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const base::Closure& completionCallback) = 0;
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virtual TextPosition textPosition() const = 0;
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virtual void resumeAfterWaitingForImports() = 0;
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virtual bool isWaitingForScripts() const = 0;
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virtual bool isExecutingScript() const = 0;
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bool isParsing() const { return m_state == ParsingState; }
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// stopParsing() is used when a load is canceled/stopped.
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// stopParsing() is currently different from detach(), but shouldn't be.
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// It should NOT be ok to call any methods on DocumentParser after either
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// detach() or stopParsing() but right now only detach() will ASSERT.
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virtual void stopParsing();
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// Document is expected to detach the parser before releasing its ref.
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// After detach, m_document is cleared. The parser will unwind its
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// callstacks, but not produce any more nodes.
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// It is impossible for the parser to touch the rest of WebCore after
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// detach is called.
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// Oilpan: We don't need to call detach when a Document is destructed.
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virtual void detach();
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protected:
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explicit DocumentParser(Document*);
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// document() will return 0 after detach() is called.
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Document* document() const { ASSERT(m_document); return m_document; }
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virtual void prepareToStopParsing();
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bool isStopping() const { return m_state == StoppingState; }
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bool isStopped() const { return m_state >= StoppedState; }
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bool isDetached() const { return m_state == DetachedState; }
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private:
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enum ParserState {
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ParsingState,
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StoppingState,
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StoppedState,
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DetachedState
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};
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ParserState m_state;
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// Every DocumentParser needs a pointer back to the document.
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// m_document will be 0 after the parser is stopped.
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Document* m_document;
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};
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} // namespace blink
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#endif // SKY_ENGINE_CORE_DOM_DOCUMENTPARSER_H_
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