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/*
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HTMLDocumentParser_h
#define HTMLDocumentParser_h
#include "CachedResourceClient.h"
#include "FragmentScriptingPermission.h"
#include "HTMLInputStream.h"
#include "HTMLScriptRunnerHost.h"
#include "HTMLToken.h"
#include "ScriptableDocumentParser.h"
#include "SegmentedString.h"
#include "Timer.h"
#include <wtf/OwnPtr.h>
namespace WebCore {
class Document;
class DocumentFragment;
class HTMLDocument;
class HTMLParserScheduler;
class HTMLTokenizer;
class HTMLScriptRunner;
class HTMLTreeBuilder;
class HTMLPreloadScanner;
class ScriptController;
class ScriptSourceCode;
class HTMLDocumentParser : public ScriptableDocumentParser, HTMLScriptRunnerHost, CachedResourceClient {
public:
static PassRefPtr<HTMLDocumentParser> create(HTMLDocument* document, bool reportErrors)
{
return adoptRef(new HTMLDocumentParser(document, reportErrors));
}
static PassRefPtr<HTMLDocumentParser> create(DocumentFragment* fragment, Element* contextElement, FragmentScriptingPermission permission)
{
return adoptRef(new HTMLDocumentParser(fragment, contextElement, permission));
}
virtual ~HTMLDocumentParser();
// Exposed for HTMLParserScheduler
void resumeParsingAfterYield();
static void parseDocumentFragment(const String&, DocumentFragment*, Element* contextElement, FragmentScriptingPermission = FragmentScriptingAllowed);
protected:
virtual void insert(const SegmentedString&);
virtual void append(const SegmentedString&);
virtual void finish();
HTMLDocumentParser(HTMLDocument*, bool reportErrors);
HTMLDocumentParser(DocumentFragment*, Element* contextElement, FragmentScriptingPermission);
HTMLTokenizer* tokenizer() const { return m_tokenizer.get(); }
HTMLTreeBuilder* treeBuilder() const { return m_treeBuilder.get(); }
private:
// DocumentParser
virtual void detach();
virtual bool hasInsertionPoint();
virtual bool finishWasCalled();
virtual bool processingData() const;
virtual void prepareToStopParsing();
virtual void stopParsing();
virtual bool isWaitingForScripts() const;
virtual bool isExecutingScript() const;
virtual void executeScriptsWaitingForStylesheets();
virtual int lineNumber() const;
virtual int columnNumber() const;
// HTMLScriptRunnerHost
virtual void watchForLoad(CachedResource*);
virtual void stopWatchingForLoad(CachedResource*);
virtual bool shouldLoadExternalScriptFromSrc(const AtomicString&);
virtual HTMLInputStream& inputStream() { return m_input; }
// CachedResourceClient
virtual void notifyFinished(CachedResource*);
void willPumpLexer();
void didPumpLexer();
enum SynchronousMode {
AllowYield,
ForceSynchronous,
};
void pumpTokenizer(SynchronousMode);
void pumpTokenizerIfPossible(SynchronousMode);
bool runScriptsForPausedTreeBuilder();
void resumeParsingAfterScriptExecution();
void begin();
void attemptToEnd();
void endIfDelayed();
void attemptToRunDeferredScriptsAndEnd();
void end();
bool isScheduledForResume() const;
bool inScriptExecution() const;
bool inWrite() const { return m_writeNestingLevel > 0; }
bool shouldDelayEnd() const { return inWrite() || isWaitingForScripts() || inScriptExecution() || isScheduledForResume(); }
ScriptController* script() const;
HTMLInputStream m_input;
// We hold m_token here because it might be partially complete.
HTMLToken m_token;
OwnPtr<HTMLTokenizer> m_tokenizer;
OwnPtr<HTMLScriptRunner> m_scriptRunner;
OwnPtr<HTMLTreeBuilder> m_treeBuilder;
OwnPtr<HTMLPreloadScanner> m_preloadScanner;
OwnPtr<HTMLParserScheduler> m_parserScheduler;
bool m_endWasDelayed;
int m_writeNestingLevel;
};
}
#endif
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