--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/html/LegacyHTMLTreeBuilder.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,215 @@
+/*
+ Copyright (C) 1997 Martin Jones (mjones@kde.org)
+ (C) 1997 Torben Weis (weis@kde.org)
+ (C) 1998 Waldo Bastian (bastian@kde.org)
+ (C) 1999 Lars Knoll (knoll@kde.org)
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+
+ 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 LegacyHTMLTreeBuilder_h
+#define LegacyHTMLTreeBuilder_h
+
+#include "FragmentScriptingPermission.h"
+#include "HTMLParserErrorCodes.h"
+#include "QualifiedName.h"
+#include <wtf/Forward.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class DoctypeToken;
+class Document;
+class DocumentFragment;
+class HTMLDocument;
+class HTMLFormElement;
+class HTMLHeadElement;
+class HTMLMapElement;
+class HTMLParserQuirks;
+class Node;
+
+struct HTMLStackElem;
+struct Token;
+
+/**
+ * The parser for HTML. It receives a stream of tokens from the LegacyHTMLDocumentParser, and
+ * builds up the Document structure from it.
+ */
+class LegacyHTMLTreeBuilder : public Noncopyable {
+public:
+ LegacyHTMLTreeBuilder(HTMLDocument*, bool reportErrors);
+ LegacyHTMLTreeBuilder(DocumentFragment*, FragmentScriptingPermission = FragmentScriptingAllowed);
+ virtual ~LegacyHTMLTreeBuilder();
+
+ /**
+ * parses one token delivered by the tokenizer
+ */
+ PassRefPtr<Node> parseToken(Token*);
+
+ // Parses a doctype token.
+ void parseDoctypeToken(DoctypeToken*);
+
+ /**
+ * tokenizer says it's not going to be sending us any more tokens
+ */
+ void finished();
+
+ /**
+ * resets the parser
+ */
+ void reset();
+
+ bool skipMode() const { return !m_skipModeTag.isNull(); }
+ bool isHandlingResidualStyleAcrossBlocks() const { return m_handlingResidualStyleAcrossBlocks; }
+
+private:
+ void setCurrent(Node*);
+ void derefCurrent();
+ void setSkipMode(const QualifiedName& qName) { m_skipModeTag = qName.localName(); }
+
+ PassRefPtr<Node> getNode(Token*);
+ bool bodyCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool canvasCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool colCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool commentCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool ddCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool dtCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool formCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool framesetCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool headCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool iframeCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool isindexCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool mapCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool nestedCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool nestedPCloserCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool nestedStyleCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool noembedCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool noframesCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool nolayerCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool noscriptCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool pCloserCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool pCloserStrictCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool rpCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool rtCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool selectCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool tableCellCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool tableSectionCreateErrorCheck(Token*, RefPtr<Node>&);
+ bool textCreateErrorCheck(Token*, RefPtr<Node>&);
+
+ void processCloseTag(Token*);
+
+ void limitDepth(int tagPriority);
+ bool insertNodeAfterLimitDepth(Node*, bool flat = false);
+ bool insertNode(Node*, bool flat = false);
+ bool handleError(Node*, bool flat, const AtomicString& localName, int tagPriority);
+
+ void pushBlock(const AtomicString& tagName, int level);
+ void popBlock(const AtomicString& tagName, bool reportErrors = false);
+ void popBlock(const QualifiedName& qName, bool reportErrors = false) { return popBlock(qName.localName(), reportErrors); } // Convenience function for readability.
+ void popOneBlock();
+ void moveOneBlockToStack(HTMLStackElem*& head);
+ inline HTMLStackElem* popOneBlockCommon();
+ void popInlineBlocks();
+
+ void freeBlock();
+
+ void createHead();
+
+ static bool isResidualStyleTag(const AtomicString& tagName);
+ static bool isAffectedByResidualStyle(const AtomicString& tagName);
+ void handleResidualStyleCloseTagAcrossBlocks(HTMLStackElem*);
+ void reopenResidualStyleTags(HTMLStackElem*, Node* malformedTableParent);
+
+ bool allowNestedRedundantTag(const AtomicString& tagName);
+
+ static bool isHeadingTag(const AtomicString& tagName);
+
+ bool isInline(Node*) const;
+
+ void startBody(); // inserts the isindex element
+ PassRefPtr<Node> handleIsindex(Token*);
+
+ void checkIfHasPElementInScope();
+ bool hasPElementInScope()
+ {
+ if (m_hasPElementInScope == Unknown)
+ checkIfHasPElementInScope();
+ return m_hasPElementInScope == InScope;
+ }
+
+ void reportError(HTMLParserErrorCode errorCode, const AtomicString* tagName1 = 0, const AtomicString* tagName2 = 0, bool closeTags = false)
+ { if (!m_reportErrors) return; reportErrorToConsole(errorCode, tagName1, tagName2, closeTags); }
+
+ void reportErrorToConsole(HTMLParserErrorCode, const AtomicString* tagName1, const AtomicString* tagName2, bool closeTags);
+
+ Document* m_document;
+
+ // The currently active element (the one new elements will be added to). Can be a document fragment, a document or an element.
+ Node* m_current;
+ // We can't ref a document, but we don't want to constantly check if a node is a document just to decide whether to deref.
+ bool m_didRefCurrent;
+
+ HTMLStackElem* m_blockStack;
+
+ // The number of tags with priority minBlockLevelTagPriority or higher
+ // currently in m_blockStack. The parser enforces a cap on this value by
+ // adding such new elements as siblings instead of children once it is reached.
+ size_t m_blocksInStack;
+ // Depth of the tree.
+ unsigned m_treeDepth;
+
+ enum ElementInScopeState { NotInScope, InScope, Unknown };
+ ElementInScopeState m_hasPElementInScope;
+
+ RefPtr<HTMLFormElement> m_currentFormElement; // currently active form
+ RefPtr<HTMLMapElement> m_currentMapElement; // current map
+ RefPtr<HTMLHeadElement> m_head; // head element; needed for HTML which defines <base> after </head>
+ RefPtr<Node> m_isindexElement; // a possible <isindex> element in the head
+
+ bool m_inBody;
+ bool m_haveContent;
+ bool m_haveFrameSet;
+
+ AtomicString m_skipModeTag; // tells the parser to discard all tags until it reaches the one specified
+
+ bool m_isParsingFragment;
+ bool m_reportErrors;
+ bool m_handlingResidualStyleAcrossBlocks;
+ int m_inStrayTableContent;
+ FragmentScriptingPermission m_scriptingPermission;
+
+ OwnPtr<HTMLParserQuirks> m_parserQuirks;
+};
+
+#if defined(BUILDING_ON_LEOPARD) || defined(BUILDING_ON_TIGER)
+bool shouldCreateImplicitHead(Document*);
+#else
+inline bool shouldCreateImplicitHead(Document*) { return true; }
+#endif
+
+// Converts the specified string to a floating number.
+// If the conversion fails, the return value is false. Take care that leading or trailing unnecessary characters make failures. This returns false for an empty string input.
+// The double* parameter may be 0.
+bool parseToDoubleForNumberType(const String&, double*);
+// Converts the specified number to a string. This is an implementation of
+// HTML5's "algorithm to convert a number to a string" for NUMBER/RANGE types.
+String serializeForNumberType(double);
+
+}
+
+#endif // LegacyHTMLTreeBuilder_h