1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
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 HTMLParser_h
#define HTMLParser_h
#include "QualifiedName.h"
#include <wtf/Forward.h>
#include <wtf/OwnPtr.h>
#include <wtf/RefPtr.h>
#include "HTMLParserErrorCodes.h"
#include "MappedAttributeEntry.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 HTMLTokenizer, and
* builds up the Document structure from it.
*/
class HTMLParser : public Noncopyable {
public:
HTMLParser(HTMLDocument*, bool reportErrors);
HTMLParser(DocumentFragment*, FragmentScriptingPermission = FragmentScriptingAllowed);
virtual ~HTMLParser();
/**
* 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 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 limitBlockDepth(int tagPriority);
bool insertNodeAfterLimitBlockDepth(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;
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
}
#endif // HTMLParser_h
|
