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