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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 GOOGLE 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 GOOGLE 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 HTML5TreeBuilder_h
#define HTML5TreeBuilder_h
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
#include <wtf/unicode/Unicode.h>
namespace WebCore {
class Document;
class Element;
class Frame;
class HTML5Lexer;
class HTML5Token;
class HTMLDocument;
class LegacyHTMLTreeConstructor;
class Node;
class HTML5TreeBuilder : public Noncopyable {
public:
HTML5TreeBuilder(HTML5Lexer*, HTMLDocument*, bool reportErrors);
~HTML5TreeBuilder();
void setPaused(bool paused) { m_isPaused = paused; }
bool isPaused() { return m_isPaused; }
// The token really should be passed as a const& since it's never modified.
PassRefPtr<Node> constructTreeFromToken(HTML5Token&);
// Must be called when parser is paused before calling the parser again.
PassRefPtr<Element> takeScriptToProcess(int& scriptStartLine);
// Done, close any open tags, etc.
void finished();
// FIXME: This is a dirty, rotten hack to keep HTMLFormControlElement happy
// until we stop using the legacy parser. DO NOT CALL THIS METHOD.
LegacyHTMLTreeConstructor* legacyTreeConstructor() const { return m_legacyTreeConstructor.get(); }
private:
// Represents HTML5 "insertion mode"
// http://www.w3.org/TR/html5/syntax.html#insertion-mode
// FIXME: Implement remainder of states.
enum InsertionMode {
Initial,
AfterFrameset,
};
PassRefPtr<Node> passTokenToLegacyParser(HTML5Token&);
PassRefPtr<Node> processToken(HTML5Token&, UChar currentCharacter = 0);
void handleScriptStartTag();
void handleScriptEndTag(Element*, int scriptStartLine);
void setInsertionMode(InsertionMode value) { m_insertionMode = value; }
InsertionMode insertionMode() const { return m_insertionMode; }
Document* m_document; // This is only used by the m_legacyParser for now.
bool m_reportErrors;
bool m_isPaused;
InsertionMode m_insertionMode;
// HTML5 spec requires that we be able to change the state of the lexer
// from within parser actions.
HTML5Lexer* m_lexer;
// We're re-using logic from the old LegacyHTMLTreeConstructor while this class is being written.
OwnPtr<LegacyHTMLTreeConstructor> m_legacyTreeConstructor;
// These members are intentionally duplicated as the first set is a hack
// on top of the legacy parser which will eventually be removed.
RefPtr<Element> m_lastScriptElement; // FIXME: Hack for <script> support on top of the old parser.
int m_lastScriptElementStartLine; // FIXME: Hack for <script> support on top of the old parser.
RefPtr<Element> m_scriptToProcess; // <script> tag which needs processing before resuming the parser.
int m_scriptToProcessStartLine; // Starting line number of the script tag needing processing.
};
}
#endif
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