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comparison: parser/htmlparser/public/nsIParser.h

parser/htmlparser/public/nsIParser.h

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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /* vim: set ts=2 sw=2 et tw=78: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef NS_IPARSER___
7 #define NS_IPARSER___
8
9
10 /**
11 * This GECKO-INTERNAL interface is on track to being REMOVED (or refactored
12 * to the point of being near-unrecognizable).
13 *
14 * Please DO NOT #include this file in comm-central code, in your XULRunner
15 * app or binary extensions.
16 *
17 * Please DO NOT #include this into new files even inside Gecko. It is more
18 * likely than not that #including this header is the wrong thing to do.
19 */
20
21 #include "nsISupports.h"
22 #include "nsIStreamListener.h"
23 #include "nsIDTD.h"
24 #include "nsString.h"
25 #include "nsTArray.h"
26 #include "nsIAtom.h"
27 #include "nsParserBase.h"
28
29 #define NS_IPARSER_IID \
30 { 0x2c4ad90a, 0x740e, 0x4212, \
31 { 0xba, 0x3f, 0xfe, 0xac, 0xda, 0x4b, 0x92, 0x9e } }
32
33 // {41421C60-310A-11d4-816F-000064657374}
34 #define NS_IDEBUG_DUMP_CONTENT_IID \
35 { 0x41421c60, 0x310a, 0x11d4, \
36 { 0x81, 0x6f, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74 } }
37
38 class nsIContentSink;
39 class nsIRequestObserver;
40 class nsString;
41 class nsIURI;
42 class nsIChannel;
43 class nsIContent;
44
45 enum eParserCommands {
46 eViewNormal,
47 eViewSource,
48 eViewFragment,
49 eViewErrors
50 };
51
52 enum eParserDocType {
53 ePlainText = 0,
54 eXML,
55 eHTML_Quirks,
56 eHTML_Strict
57 };
58
59 enum eStreamState {eNone,eOnStart,eOnDataAvail,eOnStop};
60
61 /**
62 * This GECKO-INTERNAL interface is on track to being REMOVED (or refactored
63 * to the point of being near-unrecognizable).
64 *
65 * Please DO NOT #include this file in comm-central code, in your XULRunner
66 * app or binary extensions.
67 *
68 * Please DO NOT #include this into new files even inside Gecko. It is more
69 * likely than not that #including this header is the wrong thing to do.
70 */
71 class nsIParser : public nsParserBase {
72 public:
73
74 NS_DECLARE_STATIC_IID_ACCESSOR(NS_IPARSER_IID)
75
76 /**
77 * Select given content sink into parser for parser output
78 * @update gess5/11/98
79 * @param aSink is the new sink to be used by parser
80 * @return
81 */
82 NS_IMETHOD_(void) SetContentSink(nsIContentSink* aSink)=0;
83
84
85 /**
86 * retrieve the sink set into the parser
87 * @update gess5/11/98
88 * @return current sink
89 */
90 NS_IMETHOD_(nsIContentSink*) GetContentSink(void)=0;
91
92 /**
93 * Call this method once you've created a parser, and want to instruct it
94 * about the command which caused the parser to be constructed. For example,
95 * this allows us to select a DTD which can do, say, view-source.
96 *
97 * @update gess 3/25/98
98 * @param aCommand -- ptrs to string that contains command
99 * @return nada
100 */
101 NS_IMETHOD_(void) GetCommand(nsCString& aCommand)=0;
102 NS_IMETHOD_(void) SetCommand(const char* aCommand)=0;
103 NS_IMETHOD_(void) SetCommand(eParserCommands aParserCommand)=0;
104
105 /**
106 * Call this method once you've created a parser, and want to instruct it
107 * about what charset to load
108 *
109 * @update ftang 4/23/99
110 * @param aCharset- the charest of a document
111 * @param aCharsetSource- the soure of the chares
112 * @return nada
113 */
114 NS_IMETHOD_(void) SetDocumentCharset(const nsACString& aCharset, int32_t aSource)=0;
115 NS_IMETHOD_(void) GetDocumentCharset(nsACString& oCharset, int32_t& oSource)=0;
116
117 /**
118 * Get the channel associated with this parser
119 * @update harishd,gagan 07/17/01
120 * @param aChannel out param that will contain the result
121 * @return NS_OK if successful
122 */
123 NS_IMETHOD GetChannel(nsIChannel** aChannel) = 0;
124
125 /**
126 * Get the DTD associated with this parser
127 * @update vidur 9/29/99
128 * @param aDTD out param that will contain the result
129 * @return NS_OK if successful, NS_ERROR_FAILURE for runtime error
130 */
131 NS_IMETHOD GetDTD(nsIDTD** aDTD) = 0;
132
133 /**
134 * Get the nsIStreamListener for this parser
135 */
136 virtual nsIStreamListener* GetStreamListener() = 0;
137
138 /**************************************************************************
139 * Parse methods always begin with an input source, and perform
140 * conversions until you wind up being emitted to the given contentsink
141 * (which may or may not be a proxy for the NGLayout content model).
142 ************************************************************************/
143
144 // Call this method to resume the parser from an unblocked state.
145 // This can happen, for example, if parsing was interrupted and then the
146 // consumer needed to restart the parser without waiting for more data.
147 // This also happens after loading scripts, which unblock the parser in
148 // order to process the output of document.write() and then need to
149 // continue on with the page load on an enabled parser.
150 NS_IMETHOD ContinueInterruptedParsing() = 0;
151
152 // Stops parsing temporarily.
153 NS_IMETHOD_(void) BlockParser() = 0;
154
155 // Open up the parser for tokenization, building up content
156 // model..etc. However, this method does not resume parsing
157 // automatically. It's the callers' responsibility to restart
158 // the parsing engine.
159 NS_IMETHOD_(void) UnblockParser() = 0;
160
161 /**
162 * Asynchronously continues parsing.
163 */
164 NS_IMETHOD_(void) ContinueInterruptedParsingAsync() = 0;
165
166 NS_IMETHOD_(bool) IsParserEnabled() = 0;
167 NS_IMETHOD_(bool) IsComplete() = 0;
168
169 NS_IMETHOD Parse(nsIURI* aURL,
170 nsIRequestObserver* aListener = nullptr,
171 void* aKey = 0,
172 nsDTDMode aMode = eDTDMode_autodetect) = 0;
173
174 NS_IMETHOD Terminate(void) = 0;
175
176 /**
177 * This method gets called when you want to parse a fragment of HTML or XML
178 * surrounded by the context |aTagStack|. It requires that the parser have
179 * been given a fragment content sink.
180 *
181 * @param aSourceBuffer The XML or HTML that hasn't been parsed yet.
182 * @param aTagStack The context of the source buffer.
183 * @return Success or failure.
184 */
185 NS_IMETHOD ParseFragment(const nsAString& aSourceBuffer,
186 nsTArray<nsString>& aTagStack) = 0;
187
188 /**
189 * This method gets called when the tokens have been consumed, and it's time
190 * to build the model via the content sink.
191 * @update gess5/11/98
192 * @return error code -- 0 if model building went well .
193 */
194 NS_IMETHOD BuildModel(void) = 0;
195
196 /**
197 * Call this method to cancel any pending parsing events.
198 * Parsing events may be pending if all of the document's content
199 * has been passed to the parser but the parser has been interrupted
200 * because processing the tokens took too long.
201 *
202 * @update kmcclusk 05/18/01
203 * @return NS_OK if succeeded else ERROR.
204 */
205
206 NS_IMETHOD CancelParsingEvents() = 0;
207
208 virtual void Reset() = 0;
209
210 /**
211 * True if the insertion point (per HTML5) is defined.
212 */
213 virtual bool IsInsertionPointDefined() = 0;
214
215 /**
216 * Call immediately before starting to evaluate a parser-inserted script.
217 */
218 virtual void BeginEvaluatingParserInsertedScript() = 0;
219
220 /**
221 * Call immediately after having evaluated a parser-inserted script.
222 */
223 virtual void EndEvaluatingParserInsertedScript() = 0;
224
225 /**
226 * Marks the HTML5 parser as not a script-created parser.
227 */
228 virtual void MarkAsNotScriptCreated(const char* aCommand) = 0;
229
230 /**
231 * True if this is a script-created HTML5 parser.
232 */
233 virtual bool IsScriptCreated() = 0;
234 };
235
236 NS_DEFINE_STATIC_IID_ACCESSOR(nsIParser, NS_IPARSER_IID)
237
238 /* ===========================================================*
239 Some useful constants...
240 * ===========================================================*/
241
242 #include "nsError.h"
243
244 const nsresult kEOF = NS_ERROR_HTMLPARSER_EOF;
245 const nsresult kUnknownError = NS_ERROR_HTMLPARSER_UNKNOWN;
246 const nsresult kCantPropagate = NS_ERROR_HTMLPARSER_CANTPROPAGATE;
247 const nsresult kContextMismatch = NS_ERROR_HTMLPARSER_CONTEXTMISMATCH;
248 const nsresult kBadFilename = NS_ERROR_HTMLPARSER_BADFILENAME;
249 const nsresult kBadURL = NS_ERROR_HTMLPARSER_BADURL;
250 const nsresult kInvalidParserContext = NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT;
251 const nsresult kBlocked = NS_ERROR_HTMLPARSER_BLOCK;
252 const nsresult kBadStringLiteral = NS_ERROR_HTMLPARSER_UNTERMINATEDSTRINGLITERAL;
253 const nsresult kHierarchyTooDeep = NS_ERROR_HTMLPARSER_HIERARCHYTOODEEP;
254 const nsresult kFakeEndTag = NS_ERROR_HTMLPARSER_FAKE_ENDTAG;
255 const nsresult kNotAComment = NS_ERROR_HTMLPARSER_INVALID_COMMENT;
256
257 #define NS_IPARSER_FLAG_UNKNOWN_MODE 0x00000000
258 #define NS_IPARSER_FLAG_QUIRKS_MODE 0x00000002
259 #define NS_IPARSER_FLAG_STRICT_MODE 0x00000004
260 #define NS_IPARSER_FLAG_AUTO_DETECT_MODE 0x00000010
261 #define NS_IPARSER_FLAG_VIEW_NORMAL 0x00000020
262 #define NS_IPARSER_FLAG_VIEW_SOURCE 0x00000040
263 #define NS_IPARSER_FLAG_VIEW_ERRORS 0x00000080
264 #define NS_IPARSER_FLAG_PLAIN_TEXT 0x00000100
265 #define NS_IPARSER_FLAG_XML 0x00000200
266 #define NS_IPARSER_FLAG_HTML 0x00000400
267 #define NS_IPARSER_FLAG_SCRIPT_ENABLED 0x00000800
268 #define NS_IPARSER_FLAG_FRAMES_ENABLED 0x00001000
269
270 #endif

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