This repository has been archived by the owner on Jan 13, 2022. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 43
/
nsCSSParser.cpp
6243 lines (5777 loc) · 204 KB
/
nsCSSParser.cpp
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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* emk <VYV03354@nifty.ne.jp>
* Daniel Glazman <glazman@netscape.com>
* L. David Baron <dbaron@dbaron.org>
* Boris Zbarsky <bzbarsky@mit.edu>
* Mats Palmgren <mats.palmgren@bredband.net>
* Facebook, Inc. (Modifications Copyright © 2006-2008 Facebook, Inc.)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsICSSParser.h"
#include "nsCSSProps.h"
#include "nsCSSKeywords.h"
#include "nsCSSScanner.h"
#include "nsICSSLoader.h"
#include "nsICSSStyleRule.h"
#include "nsICSSImportRule.h"
#include "nsCSSRules.h"
#include "nsICSSNameSpaceRule.h"
#include "nsIUnicharInputStream.h"
#include "nsICSSStyleSheet.h"
#include "nsCSSDeclaration.h"
#include "nsStyleConsts.h"
#include "nsIURL.h"
#include "nsNetUtil.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsIAtom.h"
#include "nsVoidArray.h"
#include "nsISupportsArray.h"
#include "nsCOMArray.h"
#include "nsColor.h"
#include "nsStyleConsts.h"
#include "nsLayoutAtoms.h"
#include "nsCSSPseudoClasses.h"
#include "nsCSSPseudoElements.h"
#include "nsCSSAnonBoxes.h"
#include "nsINameSpaceManager.h"
#include "nsXMLNameSpaceMap.h"
#include "nsThemeConstants.h"
#include "nsContentErrors.h"
#include "nsUnitConversion.h"
#include "nsPrintfCString.h"
#include "nsIMediaList.h"
#include "nsILookAndFeel.h"
#include "prprf.h"
#include "math.h"
#ifdef FBML
#include "base.h"
#include "fbmlStyleSheet.h"
#include "fbmlSelectorList.h"
#endif
//----------------------------------------------------------------------
// Your basic top-down recursive descent style parser
class CSSParserImpl : public nsICSSParser,
public nsICSSParser_MOZILLA_1_8_BRANCH {
public:
CSSParserImpl();
virtual ~CSSParserImpl();
NS_DECL_ISUPPORTS
NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet);
NS_IMETHOD SetCaseSensitive(PRBool aCaseSensitive);
NS_IMETHOD SetQuirkMode(PRBool aQuirkMode);
#ifdef MOZ_SVG
NS_IMETHOD SetSVGMode(PRBool aSVGMode);
#endif
NS_IMETHOD SetChildLoader(nsICSSLoader* aChildLoader);
// nsICSSParser_MOZILLA_1_8_BRANCH
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURI* aSheetURI,
nsIURI* aBaseURI,
PRUint32 aLineNumber,
PRBool aAllowUnsafeRules,
nsICSSStyleSheet*& aResult);
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURI* aSheetURI,
nsIURI* aBaseURI,
PRUint32 aLineNumber,
nsICSSStyleSheet*& aResult);
NS_IMETHOD ParseStyleAttribute(const nsAString& aAttributeValue,
nsIURI* aDocURL,
nsIURI* aBaseURL,
nsICSSStyleRule** aResult,
PRUint32 aLineNumber = 0);
NS_IMETHOD ParseAndAppendDeclaration(const nsAString& aBuffer,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool aParseOnlyOneDecl,
PRBool* aChanged,
PRBool aClearOldDecl);
NS_IMETHOD ParseRule(const nsAString& aRule,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsISupportsArray** aResult);
NS_IMETHOD ParseProperty(const nsCSSProperty aPropID,
const nsAString& aPropValue,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool* aChanged);
#ifndef FBML
NS_IMETHOD ParseMediaList(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
nsMediaList* aMediaList,
PRBool aHTMLMode);
#else
NS_IMETHOD ParseMediaList(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
nsMediaList* aMediaList,
PRBool aHTMLMode) {}
#endif
NS_IMETHOD ParseColorString(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
PRBool aHandleAlphaColors,
nscolor* aColor);
void AppendRule(nsICSSRule* aRule);
protected:
nsresult InitScanner(nsIUnicharInputStream* aInput, nsIURI* aSheetURI,
PRUint32 aLineNumber, nsIURI* aBaseURI);
// the caller must hold on to aBuffer until parsing is done
nsresult InitScanner(const nsAString& aBuffer, nsIURI* aSheetURI,
PRUint32 aLineNumber, nsIURI* aBaseURI);
nsresult ReleaseScanner(void);
#ifndef FBML
nsresult DoParseMediaList(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
nsMediaList* aMediaList);
#endif
PRBool GetToken(nsresult& aErrorCode, PRBool aSkipWS);
PRBool GetURLToken(nsresult& aErrorCode, PRBool aSkipWS);
void UngetToken();
PRBool ExpectSymbol(nsresult& aErrorCode, PRUnichar aSymbol, PRBool aSkipWS);
PRBool ExpectEndProperty(nsresult& aErrorCode, PRBool aSkipWS,
PRBool reportError = PR_TRUE);
nsString* NextIdent(nsresult& aErrorCode);
void SkipUntil(nsresult& aErrorCode, PRUnichar aStopSymbol);
void SkipRuleSet(nsresult& aErrorCode);
PRBool SkipAtRule(nsresult& aErrorCode);
PRBool SkipDeclaration(nsresult& aErrorCode, PRBool aCheckForBraces);
PRBool GetNonCloseParenToken(nsresult& aErrorCode, PRBool aSkipWS);
PRBool PushGroup(nsICSSGroupRule* aRule);
void PopGroup(void);
PRBool ParseRuleSet(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseAtRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
#ifndef FBML
PRBool ParseCharsetRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseImportRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool GatherURL(nsresult& aErrorCode, nsString& aURL);
PRBool GatherMedia(nsresult& aErrorCode, nsMediaList* aMedia,
PRUnichar aStopSymbol);
PRBool ProcessImport(nsresult& aErrorCode,
const nsString& aURLSpec,
nsMediaList* aMedia,
RuleAppendFunc aAppendFunc,
void* aProcessData);
PRBool ParseGroupRule(nsresult& aErrorCode, nsICSSGroupRule* aRule, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseMediaRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseMozDocumentRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseNameSpaceRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ProcessNameSpace(nsresult& aErrorCode, const nsString& aPrefix,
const nsString& aURLSpec, RuleAppendFunc aAppendFunc,
void* aProcessData);
PRBool ParseFontFaceRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParsePageRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
#endif
enum nsSelectorParsingStatus {
// we have parsed a selector and we saw a token that cannot be part of a selector:
eSelectorParsingStatus_Done,
// we should continue parsing the selector:
eSelectorParsingStatus_Continue,
// same as "Done" but we did not find a selector:
eSelectorParsingStatus_Empty,
// we saw an unexpected token or token value,
// or we saw end-of-file with an unfinished selector:
eSelectorParsingStatus_Error
};
nsSelectorParsingStatus ParseIDSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode);
nsSelectorParsingStatus ParseClassSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode);
nsSelectorParsingStatus ParsePseudoSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode,
PRBool aIsNegated);
nsSelectorParsingStatus ParseAttributeSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode);
nsSelectorParsingStatus ParseTypeOrUniversalSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode,
PRBool aIsNegated);
nsSelectorParsingStatus ParseLangSelector(nsCSSSelector& aSelector,
nsresult& aErrorCode);
nsSelectorParsingStatus ParseNegatedSimpleSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
nsresult& aErrorCode);
nsSelectorParsingStatus ParseSelector(nsresult& aErrorCode,
nsCSSSelector& aSelectorResult);
PRBool ParseSelectorList(nsresult& aErrorCode, nsCSSSelectorList*& aListHead);
PRBool ParseSelectorGroup(nsresult& aErrorCode, nsCSSSelectorList*& aListHead);
nsCSSDeclaration* ParseDeclarationBlock(nsresult& aErrorCode,
PRBool aCheckForBraces);
PRBool ParseDeclaration(nsresult& aErrorCode,
nsCSSDeclaration* aDeclaration,
PRBool aCheckForBraces,
PRBool aMustCallValueAppended,
PRBool* aChanged);
// After a parse error parsing |aPropID|, clear the data in
// |mTempData|.
void ClearTempData(nsCSSProperty aPropID);
// After a successful parse of |aPropID|, transfer data from
// |mTempData| to |mData|. Set |*aChanged| to true if something
// changed, but leave it unmodified otherwise. If aMustCallValueAppended
// is false, will not call ValueAppended on aDeclaration if the property
// is already set in it.
void TransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool aMustCallValueAppended,
PRBool* aChanged);
void DoTransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool aMustCallValueAppended,
PRBool* aChanged);
PRBool ParseProperty(nsresult& aErrorCode, nsCSSProperty aPropID);
PRBool ParseSingleValueProperty(nsresult& aErrorCode, nsCSSValue& aValue,
nsCSSProperty aPropID);
#ifdef MOZ_XUL
PRBool ParseTreePseudoElement(nsresult& aErrorCode, nsCSSSelector& aSelector);
#endif
// Property specific parsing routines
PRBool ParseAzimuth(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseBackground(nsresult& aErrorCode);
PRBool ParseBackgroundPosition(nsresult& aErrorCode);
PRBool ParseFilter(nsresult& aErrorCode);
PRBool ParseBorderColor(nsresult& aErrorCode);
PRBool ParseBorderColors(nsresult& aErrorCode,
nsCSSValueList** aResult,
nsCSSProperty aProperty);
PRBool ParseBorderSpacing(nsresult& aErrorCode);
PRBool ParseBorderSide(nsresult& aErrorCode,
const nsCSSProperty aPropIDs[],
PRBool aSetAllSides);
PRBool ParseBorderStyle(nsresult& aErrorCode);
PRBool ParseBorderWidth(nsresult& aErrorCode);
PRBool ParseBorderRadius(nsresult& aErrorCode);
PRBool ParseOutlineRadius(nsresult& aErrorCode);
// for 'clip' and '-moz-image-region'
PRBool ParseRect(nsCSSRect& aRect, nsresult& aErrorCode,
nsCSSProperty aPropID);
PRBool DoParseRect(nsCSSRect& aRect, nsresult& aErrorCode);
PRBool ParseContent(nsresult& aErrorCode);
PRBool ParseCounterData(nsresult& aErrorCode,
nsCSSCounterData** aResult,
nsCSSProperty aPropID);
PRBool ParseCue(nsresult& aErrorCode);
PRBool ParseCursor(nsresult& aErrorCode);
PRBool ParseFont(nsresult& aErrorCode);
PRBool ParseFontWeight(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseFamily(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseListStyle(nsresult& aErrorCode);
PRBool ParseMargin(nsresult& aErrorCode);
PRBool ParseMarks(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseOutline(nsresult& aErrorCode);
PRBool ParseOverflow(nsresult& aErrorCode);
PRBool ParsePadding(nsresult& aErrorCode);
PRBool ParsePause(nsresult& aErrorCode);
PRBool ParseQuotes(nsresult& aErrorCode);
PRBool ParseSize(nsresult& aErrorCode);
PRBool ParseTextDecoration(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseTextShadow(nsresult& aErrorCode);
#ifdef MOZ_SVG
PRBool ParseDasharray(nsresult& aErrorCode);
PRBool ParseMarker(nsresult& aErrorCode);
#endif
// Reused utility parsing routines
void AppendValue(nsCSSProperty aPropID, const nsCSSValue& aValue);
PRBool ParseBoxProperties(nsresult& aErrorCode, nsCSSRect& aResult,
const nsCSSProperty aPropIDs[]);
PRBool ParseDirectionalBoxProperty(nsresult& aErrorCode,
nsCSSProperty aProperty,
PRInt32 aSourceType);
PRInt32 ParseChoice(nsresult& aErrorCode, nsCSSValue aValues[],
const nsCSSProperty aPropIDs[], PRInt32 aNumIDs);
PRBool ParseColor(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseColorComponent(nsresult& aErrorCode, PRUint8& aComponent,
PRInt32& aType, char aStop);
// ParseHSLColor parses everything starting with the opening '(' up through
// and including the aStop char.
PRBool ParseHSLColor(nsresult& aErrorCode, nscolor& aColor, char aStop);
// ParseColorOpacity will enforce that the color ends with a ')' after the opacity
PRBool ParseColorOpacity(nsresult& aErrorCode, PRUint8& aOpacity);
PRBool ParseEnum(nsresult& aErrorCode, nsCSSValue& aValue, const PRInt32 aKeywordTable[]);
PRBool ParseVariant(nsresult& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[]);
PRBool ParsePositiveVariant(nsresult& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[]);
PRBool ParseCounter(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseAttr(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseURL(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool TranslateDimension(nsresult& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask,
float aNumber, const nsString& aUnit);
void SetParsingCompoundProperty(PRBool aBool) {
NS_ASSERTION(aBool == PR_TRUE || aBool == PR_FALSE, "bad PRBool value");
mParsingCompoundProperty = aBool;
}
PRBool IsParsingCompoundProperty(void) {
return mParsingCompoundProperty;
}
// Current token. The value is valid after calling GetToken
nsCSSToken mToken;
// Our scanner.
nsCSSScanner mScanner;
// The URI to be used as a base for relative URIs.
nsCOMPtr<nsIURI> mBaseURL;
// The URI to be used as an HTTP "Referer" and for error reporting.
nsCOMPtr<nsIURI> mSheetURL;
#ifndef FBML
// The sheet we're parsing into
nsCOMPtr<nsICSSStyleSheet> mSheet;
#else
FBMLStyleSheet *mSheet;
#endif
// Used for @import rules
nsICSSLoader* mChildLoader; // not ref counted, it owns us
// Sheet section we're in. This is used to enforce correct ordering of the
// various rule types (eg the fact that a @charset rule must come before
// anything else).
enum nsCSSSection {
eCSSSection_Charset,
eCSSSection_Import,
eCSSSection_NameSpace,
eCSSSection_General
};
nsCSSSection mSection;
#ifndef FBML
nsXMLNameSpaceMap *mNameSpaceMap; // weak, mSheet owns it
#endif
// After an UngetToken is done this flag is true. The next call to
// GetToken clears the flag.
PRPackedBool mHavePushBack : 1;
// True if we are in quirks mode; false in standards or almost standards mode
PRPackedBool mNavQuirkMode : 1;
// True if unsafe rules should be allowed
PRPackedBool mUnsafeRulesEnabled : 1;
#ifdef MOZ_SVG
// True if we are in SVG mode; false in "normal" CSS
PRPackedBool mSVGMode : 1;
#endif
// True for parsing media lists for HTML attributes, where we have to
// ignore CSS comments.
PRPackedBool mHTMLMediaMode : 1;
// True if ParseColor should handle rgba() and hsla(), which most of
// Gecko currently doesn't understand.
PRPackedBool mHandleAlphaColors : 1;
// True if tagnames and attributes are case-sensitive
PRPackedBool mCaseSensitive : 1;
// This flag is set when parsing a non-box shorthand; it's used to not apply
// some quirks during shorthand parsing
PRPackedBool mParsingCompoundProperty : 1;
// Stack of rule groups; used for @media and such.
nsCOMArray<nsICSSGroupRule> mGroupStack;
// During the parsing of a property (which may be a shorthand), the data
// are stored in |mTempData|. (It is needed to ensure that parser
// errors cause the data to be ignored, and to ensure that a
// non-'!important' declaration does not override an '!important'
// one.)
nsCSSExpandedDataBlock mTempData;
// All data from successfully parsed properties are placed into |mData|.
nsCSSExpandedDataBlock mData;
#ifdef DEBUG
PRPackedBool mScannerInited;
#endif
};
PR_STATIC_CALLBACK(void) AppendRuleToArray(nsICSSRule* aRule, void* aArray)
{
nsISupportsArray* arr = (nsISupportsArray*) aArray;
arr->AppendElement(aRule);
}
PR_STATIC_CALLBACK(void) AppendRuleToSheet(nsICSSRule* aRule, void* aParser)
{
CSSParserImpl* parser = (CSSParserImpl*) aParser;
parser->AppendRule(aRule);
}
nsresult
NS_NewCSSParser(nsICSSParser** aInstancePtrResult)
{
CSSParserImpl *it = new CSSParserImpl();
if (it == nsnull) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsICSSParser), (void **) aInstancePtrResult);
}
#ifdef CSS_REPORT_PARSE_ERRORS
#define REPORT_UNEXPECTED(msg_) \
mScanner.ReportUnexpected(#msg_)
#define REPORT_UNEXPECTED_P(msg_, params_) \
mScanner.ReportUnexpectedParams(#msg_, params_, NS_ARRAY_LENGTH(params_))
#define REPORT_UNEXPECTED_EOF(lf_) \
mScanner.ReportUnexpectedEOF(#lf_)
#define REPORT_UNEXPECTED_TOKEN(msg_) \
mScanner.ReportUnexpectedToken(mToken, #msg_)
#define REPORT_UNEXPECTED_TOKEN_P(msg_, params_) \
mScanner.ReportUnexpectedTokenParams(mToken, #msg_, \
params_, NS_ARRAY_LENGTH(params_))
#ifndef FBML
#define OUTPUT_ERROR() \
mScanner.OutputError()
#else
#define OUTPUT_ERROR() \
mSheet->OutputError(mScanner);
#endif
#define CLEAR_ERROR() \
mScanner.ClearError()
#else
#define REPORT_UNEXPECTED(msg_)
#define REPORT_UNEXPECTED_P(msg_, params_)
#define REPORT_UNEXPECTED_EOF(lf_)
#define REPORT_UNEXPECTED_TOKEN(msg_)
#define REPORT_UNEXPECTED_TOKEN_P(msg_, params_)
#define OUTPUT_ERROR()
#define CLEAR_ERROR()
#endif
CSSParserImpl::CSSParserImpl()
: mToken(),
mScanner(),
mChildLoader(nsnull),
mSection(eCSSSection_Charset),
#ifndef FBML
mNameSpaceMap(nsnull),
#endif
mHavePushBack(PR_FALSE),
mNavQuirkMode(PR_FALSE),
mUnsafeRulesEnabled(PR_FALSE),
#ifdef MOZ_SVG
mSVGMode(PR_FALSE),
#endif
mHTMLMediaMode(PR_FALSE),
mHandleAlphaColors(PR_FALSE),
mCaseSensitive(PR_FALSE),
mParsingCompoundProperty(PR_FALSE)
#ifdef DEBUG
, mScannerInited(PR_FALSE)
#endif
{
}
NS_IMPL_ISUPPORTS2(CSSParserImpl, nsICSSParser, nsICSSParser_MOZILLA_1_8_BRANCH)
CSSParserImpl::~CSSParserImpl()
{
mData.AssertInitialState();
mTempData.AssertInitialState();
}
NS_IMETHODIMP
CSSParserImpl::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
NS_PRECONDITION(nsnull != aSheet, "null ptr");
if (nsnull == aSheet) {
return NS_ERROR_NULL_POINTER;
}
#ifndef FBML
if (aSheet != mSheet) {
// Switch to using the new sheet
mGroupStack.Clear();
mSheet = aSheet;
mNameSpaceMap = mSheet->GetNameSpaceMap();
}
#else
mSheet = (FBMLStyleSheet*)aSheet;
#endif
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::SetCaseSensitive(PRBool aCaseSensitive)
{
NS_ASSERTION(aCaseSensitive == PR_TRUE || aCaseSensitive == PR_FALSE, "bad PRBool value");
mCaseSensitive = aCaseSensitive;
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::SetQuirkMode(PRBool aQuirkMode)
{
NS_ASSERTION(aQuirkMode == PR_TRUE || aQuirkMode == PR_FALSE, "bad PRBool value");
mNavQuirkMode = aQuirkMode;
return NS_OK;
}
#ifdef MOZ_SVG
NS_IMETHODIMP
CSSParserImpl::SetSVGMode(PRBool aSVGMode)
{
NS_ASSERTION(aSVGMode == PR_TRUE || aSVGMode == PR_FALSE, "bad PRBool value");
mSVGMode = aSVGMode;
return NS_OK;
}
#endif
NS_IMETHODIMP
CSSParserImpl::SetChildLoader(nsICSSLoader* aChildLoader)
{
mChildLoader = aChildLoader; // not ref counted, it owns us
return NS_OK;
}
nsresult
CSSParserImpl::InitScanner(nsIUnicharInputStream* aInput, nsIURI* aSheetURI,
PRUint32 aLineNumber, nsIURI* aBaseURI)
{
NS_ASSERTION(! mScannerInited, "already have scanner");
mScanner.Init(aInput, aSheetURI, aLineNumber);
#ifdef DEBUG
mScannerInited = PR_TRUE;
#endif
mBaseURL = aBaseURI;
mSheetURL = aSheetURI;
mHavePushBack = PR_FALSE;
return NS_OK;
}
nsresult
CSSParserImpl::InitScanner(const nsAString& aBuffer, nsIURI* aSheetURI,
PRUint32 aLineNumber, nsIURI* aBaseURI)
{
// Having it not own the string is OK since the caller will hold on to
// the stream until we're done parsing.
nsCOMPtr<nsIUnicharInputStream> input;
nsresult rv = NS_NewStringUnicharInputStream(getter_AddRefs(input),
&aBuffer, PR_FALSE);
if (NS_FAILED(rv)) {
return rv;
}
return InitScanner(input, aSheetURI, aLineNumber, aBaseURI);
}
nsresult
CSSParserImpl::ReleaseScanner(void)
{
mScanner.Close();
#ifdef DEBUG
mScannerInited = PR_FALSE;
#endif
mBaseURL = nsnull;
mSheetURL = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
nsIURI* aSheetURI,
nsIURI* aBaseURI,
PRUint32 aLineNumber,
nsICSSStyleSheet*& aResult)
{
return Parse(aInput, aSheetURI, aBaseURI, aLineNumber, PR_FALSE, aResult);
}
NS_IMETHODIMP
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
nsIURI* aSheetURI,
nsIURI* aBaseURI,
PRUint32 aLineNumber,
PRBool aAllowUnsafeRules,
nsICSSStyleSheet*& aResult)
{
NS_ASSERTION(nsnull != aBaseURI, "need base URL");
NS_ASSERTION(nsnull != aSheetURI, "need sheet URL");
#ifndef FBML
if (! mSheet) {
NS_NewCSSStyleSheet(getter_AddRefs(mSheet));
NS_ENSURE_TRUE(mSheet, NS_ERROR_OUT_OF_MEMORY);
mSheet->SetURIs(aSheetURI, aBaseURI);
mNameSpaceMap = nsnull;
}
#ifdef DEBUG
/*else {
nsCOMPtr<nsIURI> uri;
mSheet->GetSheetURI(getter_AddRefs(uri));
PRBool equal;
aSheetURI->Equals(uri, &equal);
NS_ASSERTION(equal, "Sheet URI does not match passed URI");
}*/
#endif
#else
mSheet = (FBMLStyleSheet*)aResult;
#endif
nsresult errorCode = NS_OK;
nsresult result = InitScanner(aInput, aSheetURI, aLineNumber, aBaseURI);
if (! NS_SUCCEEDED(result)) {
return result;
}
#ifndef FBML
PRInt32 ruleCount = 0;
mSheet->StyleRuleCount(ruleCount);
if (0 < ruleCount) {
nsICSSRule* lastRule = nsnull;
mSheet->GetStyleRuleAt(ruleCount - 1, lastRule);
if (lastRule) {
PRInt32 type;
lastRule->GetType(type);
switch (type) {
case nsICSSRule::CHARSET_RULE:
case nsICSSRule::IMPORT_RULE:
mSection = eCSSSection_Import;
break;
case nsICSSRule::NAMESPACE_RULE:
mSection = eCSSSection_NameSpace;
break;
default:
mSection = eCSSSection_General;
break;
}
NS_RELEASE(lastRule);
}
}
else {
mSection = eCSSSection_Charset; // sheet is empty, any rules are fair
}
#else
mSection = eCSSSection_Charset; // sheet is empty, any rules are fair
#endif
mUnsafeRulesEnabled = aAllowUnsafeRules;
nsCSSToken* tk = &mToken;
for (;;) {
// Get next non-whitespace token
if (!GetToken(errorCode, PR_TRUE)) {
//OUTPUT_ERROR();
break;
}
if (eCSSToken_HTMLComment == tk->mType) {
continue; // legal here only
}
if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(errorCode, AppendRuleToSheet, this);
continue;
}
UngetToken();
if (ParseRuleSet(errorCode, AppendRuleToSheet, this)) {
mSection = eCSSSection_General;
}
}
ReleaseScanner();
mUnsafeRulesEnabled = PR_FALSE;
#ifndef FBML
aResult = mSheet;
NS_ADDREF(aResult);
#endif
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::ParseStyleAttribute(const nsAString& aAttributeValue,
nsIURI* aDocURL,
nsIURI* aBaseURL,
nsICSSStyleRule** aResult,
PRUint32 aLineNumber)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
nsresult rv =
InitScanner(aAttributeValue, aDocURL, aLineNumber, aBaseURL);
if (! NS_SUCCEEDED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
// In quirks mode, allow style declarations to have braces or not
// (bug 99554).
PRBool haveBraces;
if (mNavQuirkMode) {
GetToken(errorCode, PR_TRUE);
haveBraces = eCSSToken_Symbol == mToken.mType &&
'{' == mToken.mSymbol;
UngetToken();
}
else {
haveBraces = PR_FALSE;
}
nsCSSDeclaration* declaration = ParseDeclarationBlock(errorCode, haveBraces);
if (declaration) {
// Create a style rule for the delcaration
nsICSSStyleRule* rule = nsnull;
rv = NS_NewCSSStyleRule(&rule, nsnull, declaration);
if (NS_FAILED(rv)) {
declaration->RuleAbort();
ReleaseScanner();
return rv;
}
*aResult = rule;
}
else {
*aResult = nsnull;
}
ReleaseScanner();
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::ParseAndAppendDeclaration(const nsAString& aBuffer,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool aParseOnlyOneDecl,
PRBool* aChanged,
PRBool aClearOldDecl)
{
// NS_ASSERTION(nsnull != aBaseURL, "need base URL");
*aChanged = PR_FALSE;
nsresult rv = InitScanner(aBuffer, aSheetURL, 0, aBaseURL);
if (! NS_SUCCEEDED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
if (aClearOldDecl) {
mData.AssertInitialState();
aDeclaration->ClearData();
// We could check if it was already empty, but...
*aChanged = PR_TRUE;
} else {
aDeclaration->ExpandTo(&mData);
}
do {
// If we cleared the old decl, then we want to be calling
// ValueAppended as we parse.
if (!ParseDeclaration(errorCode, aDeclaration, PR_FALSE,
aClearOldDecl, aChanged)) {
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
rv = errorCode;
if (NS_FAILED(errorCode))
break;
if (!SkipDeclaration(errorCode, PR_FALSE)) {
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
rv = errorCode;
break;
}
}
} while (!aParseOnlyOneDecl);
aDeclaration->CompressFrom(&mData);
ReleaseScanner();
return rv;
}
NS_IMETHODIMP
CSSParserImpl::ParseRule(const nsAString& aRule,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsISupportsArray** aResult)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
NS_ENSURE_ARG_POINTER(aResult);
nsresult rv = InitScanner(aRule, aSheetURL, 0, aBaseURL);
if (NS_FAILED(rv)) {
return rv;
}
rv = NS_NewISupportsArray(aResult);
if (NS_FAILED(rv)) {
ReleaseScanner();
return rv;
}
mSection = eCSSSection_Charset; // callers are responsible for rejecting invalid rules.
nsresult errorCode = NS_OK;
nsCSSToken* tk = &mToken;
// Get first non-whitespace token
if (!GetToken(errorCode, PR_TRUE)) {
REPORT_UNEXPECTED(PEParseRuleWSOnly);
OUTPUT_ERROR();
} else if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(errorCode, AppendRuleToArray, *aResult);
}
else {
UngetToken();
ParseRuleSet(errorCode, AppendRuleToArray, *aResult);
}
OUTPUT_ERROR();
ReleaseScanner();
return NS_OK;
}
//XXXbz this function does not deal well with something like "foo
//!important" as the aPropValue. It will parse the "foo" and set it
//in the decl, then ignore the !important. It should either fail to
//parse this or do !important correctly....
NS_IMETHODIMP
CSSParserImpl::ParseProperty(const nsCSSProperty aPropID,
const nsAString& aPropValue,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool* aChanged)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
NS_ASSERTION(nsnull != aDeclaration, "Need declaration to parse into!");
*aChanged = PR_FALSE;
nsresult rv = InitScanner(aPropValue, aSheetURL, 0, aBaseURL);
if (NS_FAILED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
if (eCSSProperty_UNKNOWN == aPropID) { // unknown property
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(aPropID));
const PRUnichar *params[] = {
propName.get()
};
REPORT_UNEXPECTED_P(PEUnknownProperty, params);
REPORT_UNEXPECTED(PEDeclDropped);
OUTPUT_ERROR();
ReleaseScanner();
return NS_OK;
}
mData.AssertInitialState();
mTempData.AssertInitialState();
aDeclaration->ExpandTo(&mData);
nsresult result = NS_OK;
if (ParseProperty(errorCode, aPropID)) {
TransferTempData(aDeclaration, aPropID, PR_FALSE, PR_FALSE, aChanged);
} else {
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(aPropID));
const PRUnichar *params[] = {
propName.get()
};
REPORT_UNEXPECTED_P(PEPropertyParsingError, params);
REPORT_UNEXPECTED(PEDeclDropped);
OUTPUT_ERROR();
ClearTempData(aPropID);
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
result = errorCode;
}
CLEAR_ERROR();
aDeclaration->CompressFrom(&mData);
ReleaseScanner();
return result;
}
#ifndef FBML
NS_IMETHODIMP
CSSParserImpl::ParseMediaList(const nsSubstring& aBuffer,