Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 8bcb5050c1eb7e4dbc0b77850e9d0689d2f59ca7 (plain) (blame)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
/*******************************************************************************
 * Copyright (c) 2006, 2008 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.cdt.core.dom.lrparser.action;

import java.util.Collections;
import java.util.List;

import lpg.lpgjavaruntime.IToken;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTArrayDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTArrayModifier;
import org.eclipse.cdt.core.dom.ast.IASTArraySubscriptExpression;
import org.eclipse.cdt.core.dom.ast.IASTBinaryExpression;
import org.eclipse.cdt.core.dom.ast.IASTBreakStatement;
import org.eclipse.cdt.core.dom.ast.IASTCaseStatement;
import org.eclipse.cdt.core.dom.ast.IASTCastExpression;
import org.eclipse.cdt.core.dom.ast.IASTCompletionNode;
import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.IASTConditionalExpression;
import org.eclipse.cdt.core.dom.ast.IASTContinueStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTDeclarationStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTDefaultStatement;
import org.eclipse.cdt.core.dom.ast.IASTDoStatement;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTExpressionList;
import org.eclipse.cdt.core.dom.ast.IASTExpressionStatement;
import org.eclipse.cdt.core.dom.ast.IASTFieldDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTForStatement;
import org.eclipse.cdt.core.dom.ast.IASTFunctionCallExpression;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTGotoStatement;
import org.eclipse.cdt.core.dom.ast.IASTIdExpression;
import org.eclipse.cdt.core.dom.ast.IASTInitializer;
import org.eclipse.cdt.core.dom.ast.IASTInitializerExpression;
import org.eclipse.cdt.core.dom.ast.IASTInitializerList;
import org.eclipse.cdt.core.dom.ast.IASTLabelStatement;
import org.eclipse.cdt.core.dom.ast.IASTLiteralExpression;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTNullStatement;
import org.eclipse.cdt.core.dom.ast.IASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTPointerOperator;
import org.eclipse.cdt.core.dom.ast.IASTProblem;
import org.eclipse.cdt.core.dom.ast.IASTProblemExpression;
import org.eclipse.cdt.core.dom.ast.IASTProblemHolder;
import org.eclipse.cdt.core.dom.ast.IASTReturnStatement;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.IASTTypeId;
import org.eclipse.cdt.core.dom.ast.IASTTypeIdExpression;
import org.eclipse.cdt.core.dom.ast.IASTUnaryExpression;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier.IASTEnumerator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCastExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTLiteralExpression;
import org.eclipse.cdt.core.dom.lrparser.IParser;
import org.eclipse.cdt.core.dom.lrparser.IParserActionTokenProvider;
import org.eclipse.cdt.core.parser.util.DebugUtil;
import org.eclipse.cdt.internal.core.dom.lrparser.c99.C99Parsersym;
import org.eclipse.cdt.internal.core.dom.lrparser.cpp.CPPParsersym;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;


/**
 * Parser semantic actions that are common to both C and C++.
 * 
 * @author Mike Kucera
 */
@SuppressWarnings("restriction")
public abstract class BuildASTParserAction {


	/**
	 * Used with very simple optional rules that just say
	 * that some particular token or keyword is optional.
	 * The presence of the PLACE_HOLDER on the stack means that the keyword
	 * was parsed, the presence of null means the keyword wasn't parsed. 
	 * 
	 * @see BuildASTParserAction#consumePlaceHolder()
	 * @see BuildASTParserAction#consumeEmpty()
	 */
	protected static final Object PLACE_HOLDER = Boolean.TRUE; // any object will do
	
	
	// turn debug tracing on and off
	// TODO move this into an AspectJ project
	protected static final boolean TRACE_ACTIONS = false;
	protected static final boolean TRACE_AST_STACK = false;
	
	
	/** Stack that holds the intermediate nodes as the AST is being built */
	protected final ScopedStack<Object> astStack = new ScopedStack<Object>();
	
	/** Provides an interface to the token stream */
	protected final IParserActionTokenProvider parser;
	
	/** The completion node, only generated during a completion parse */
	protected ASTCompletionNode completionNode;
	
	/** The root node is created outside the parser because it is also needed by the preprocessor */
	protected final IASTTranslationUnit tu;

	/** Abstract factory for creating AST node objects */
	private final IASTNodeFactory nodeFactory;
	
	
	
    
	
	/**
	 * Completion tokens are represented by different kinds by different parsers.
	 */
	protected abstract boolean isCompletionToken(IToken token);
	
	
	/**
	 * Get the parser that will recognize expression statements.
	 */
	protected abstract IParser getExpressionStatementParser();
	
	
	/**
	 * Expression parser that does not recognize cast expressions,
	 * used to disambiguate casts. 
	 */
	protected abstract IParser getNoCastExpressionParser();
	
	
	/**
	 * Expression parser that treats all sizeof and typeid expressions
	 * as unary expressions.
	 */
	protected abstract IParser getSizeofExpressionParser();
	
	
	
	/**
	 * Create a new parser action.
	 * @param tu Root node of the AST, its list of declarations should be empty.
	 * @throws NullPointerException if any of the parameters are null
	 */
	public BuildASTParserAction(IASTNodeFactory nodeFactory, IParserActionTokenProvider parser, IASTTranslationUnit tu) {
		if(nodeFactory == null)
			throw new NullPointerException("nodeFactory is null"); //$NON-NLS-1$
		if(parser == null)
			throw new NullPointerException("parser is null"); //$NON-NLS-1$
		if(tu == null)
			throw new NullPointerException("tu is null"); //$NON-NLS-1$
		
		this.nodeFactory = nodeFactory;
		this.parser = parser;
		this.tu = tu;
	}

	
	/**
	 * Creates a completion node if one does not yet exist and adds the 
	 * given name to it.
	 */
	protected void addNameToCompletionNode(IASTName name, String prefix) {
		if(completionNode == null) {
			prefix = (prefix == null || prefix.length() == 0) ? null : prefix;
			completionNode = nodeFactory.newCompletionNode(prefix, tu);
		}
		
		completionNode.addName(name);
	}
	
	
	/**
	 * Used to combine completion nodes from secondary parsers into
	 * the main completion node.
	 */
	protected void addNameToCompletionNode(IASTCompletionNode node) {
		if(node == null)
			return;
		
		for(IASTName name : node.getNames())
			addNameToCompletionNode(name, node.getPrefix());
	}
	
	
	/**
	 * Returns the completion node if this is a completion parse, null otherwise.
	 */
	public IASTCompletionNode getASTCompletionNode() {
		return completionNode;
	}
	
	
	/**
	 * Used to get the result of secondary parsers.
	 */
	public IASTNode getSecondaryParseResult() {
		return (IASTNode) astStack.pop();
	}
	
	
	
	protected static int offset(IToken token) {
		return token.getStartOffset();
	}

	protected static int offset(IASTNode node) {
		return ((ASTNode)node).getOffset();
	}

	protected static int length(IToken token) {
		return endOffset(token) - offset(token);
	}

	protected static int length(IASTNode node) {
		return ((ASTNode)node).getLength();
	}

	protected static int endOffset(IASTNode node) {
		return offset(node) + length(node);
	}

	protected static int endOffset(IToken token) {
		return token.getEndOffset();
	}


	protected void setOffsetAndLength(IASTNode node) {
		int ruleOffset = parser.getLeftIToken().getStartOffset();
		int ruleLength = parser.getRightIToken().getEndOffset() - ruleOffset;
		((ASTNode)node).setOffsetAndLength(ruleOffset, ruleLength);
	}

	protected static void setOffsetAndLength(IASTNode node, IToken token) {
		((ASTNode)node).setOffsetAndLength(offset(token), length(token));
	}

	protected static void setOffsetAndLength(IASTNode node, int offset, int length) {
		((ASTNode)node).setOffsetAndLength(offset, length);
	}

	
	/**
	 * Creates a IASTName node from an identifier token.
	 * If the token is a completion token then it is added to the completion node.
	 */
	protected IASTName createName(IToken token) {
		IASTName name = nodeFactory.newName(token.toString().toCharArray()); // TODO, token.toCharArray();
		setOffsetAndLength(name, token); 
		
		if(isCompletionToken(token))
			addNameToCompletionNode(name, token.toString());
		
		return name;
	}
	
	
	/**
	 * Runs the given parser on the tokens that make up the current rule.
	 */
	protected IASTNode runSecondaryParser(IParser secondaryParser) { 
		List<IToken> tokens = parser.getRuleTokens();
		
		// the secondary parser will alter the token kinds, which will need to be undone
		int[] savedKinds = new int[tokens.size()];
		
		int i = 0;
		for(IToken token : tokens)
			savedKinds[i++] = token.getKind();
		
		secondaryParser.setTokens(tokens);
		
		// need to pass tu because any new completion nodes need to be linked directly to the root
		IASTCompletionNode compNode = secondaryParser.parse(tu);
		addNameToCompletionNode(compNode);
		IASTNode result = secondaryParser.getSecondaryParseResult();
		
		// restore the token kinds
		i = 0;
		for(IToken token : tokens)
			token.setKind(savedKinds[i++]);
		
		return result;
	}
	
	
	
	/**
	 * Allows simple pattern match testing of lists of tokens.
	 * 
	 * TODO: need to take token mapping into account
	 * 
	 * @throws NullPointerException if source or pattern is null
	 */
	public static boolean matchTokens(List<IToken> source, Integer ... pattern) {
		if(source.size() != pattern.length) // throws NPE if either parameter is null
			return false;
		
		for(int i = 0, n = pattern.length; i < n; i++) {
			if(source.get(i).getKind() != pattern[i].intValue())
				return false;
		}
		return true;
	}
	
	
	
	/**
	 * Converts the given token list to a char[] suitable for
	 * creating a name node. Spaces are discarded.
	 */
	protected static char[] tokenListToNameCharArray(List<IToken> tokens) {
		StringBuilder sb = new StringBuilder(20); // longest operator name: operator delete[]
		
		for(IToken t : tokens)
			sb.append(t.toString());
		
		int n = sb.length();
		char[] cs = new char[n]; 
		sb.getChars(0, n, cs, 0);
		return cs;
	}
	
	
	/**
	 * Finds the tokens in the given list that are between startOffset and endOffset.
	 * Note, the offsets have to be exact.
	 */
	public static List<IToken> tokenOffsetSubList(List<IToken> tokens, int startOffset, int endOffset) {
		int first = 0, last = 0;
		int i = 0;
		for(IToken t : tokens) {
			if(offset(t) == startOffset) {
				first = i;
			}
			if(endOffset(t) == endOffset) {
				last = i;
				break;
			}
			i++;
		}
		return tokens.subList(first, last+1);
	}
	
	
	/*************************************************************************************************************
	 * Start of actions.
	 ************************************************************************************************************/
	
	

	/**
	 * Method that is called by the special <openscope> production
	 * in order to create a new scope in the AST stack.
	 */
	public void openASTScope() {
		astStack.openScope();
	}
	
	
	
	/**
	 * Place null on the stack.
	 * Usually called for optional element to indicate the element
	 * was not parsed.
	 */
	public void consumeEmpty() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		astStack.push(null);
	}

	
	/**
	 * Place a marker on the stack.
	 * Usually used for very simple optional elements to indicate
	 * the element was parsed. Usually the existence of an AST node
	 * on the stack is used instead of the marker, but for simple
	 * cases like an optional keyword this action is useful. 
	 */
	public void consumePlaceHolder() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		astStack.push(PLACE_HOLDER);
	}
	
	
	
	/**
	 * Gets the current token and places it on the stack for later consumption.
	 */
	public void consumeDeclSpecToken() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		astStack.push(parser.getRightIToken());
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	

	
	public void consumeTranslationUnit() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		// can't close the outermost scope
		// the outermost scope may be empty if there are no tokens in the file
		for(Object o : astStack.topScope()) {
			tu.addDeclaration((IASTDeclaration)o);
		}

		// this is the same way that the DOM parser computes the length
		IASTDeclaration[] declarations = tu.getDeclarations();
        if (declarations.length != 0) {
        	IASTNode d = declarations[declarations.length-1];
            setOffsetAndLength(tu, 0, offset(d) + length(d));
        } 
        
        resolveAmbiguityNodes();

        if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	/**
	 * Removes ambiguity nodes from the AST by resolving them.
	 * The ambiguity nodes resolve themselves when visited for the first time.
	 * All ambiguities must be resolved before the AST is returned.
	 * 
	 * @see CPPASTAmbiguity.accept()
	 * @see CASTAmbiguity.accept()
	 * 
	 * TODO Ambiguity resolution may be avoided in the case that no
	 * ambiguity nodes were created.
	 */
	private void resolveAmbiguityNodes() {
		tu.accept(EMPTY_VISITOR);
	}
	
	
	/**
	 * When applied to the AST causes ambiguity nodes to be resolved.
	 */
	protected static final ASTVisitor EMPTY_VISITOR = new ASTVisitor() {
		{ shouldVisitStatements = true; }
	};
	
	
	
  	/**
  	 * Consumes a single identifier token.
  	 */
  	public void consumeIdentifierName() {
  		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
  		
  		astStack.push(createName(parser.getRightIToken()));
  		
  		if(TRACE_AST_STACK) System.out.println(astStack);
  	}
  	
  	
  	/**
	 * block_item ::= declaration | statement 
	 * 
	 * Wrap a declaration in a DeclarationStatement.
	 */
	public void consumeStatementDeclaration() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclaration decl = (IASTDeclaration) astStack.pop();
		IASTDeclarationStatement declarationStatement = nodeFactory.newDeclarationStatement(decl);
		setOffsetAndLength(declarationStatement);
		
		// attempt to also parse the tokens as an expression
		IASTExpressionStatement expressionStatement = null;
		if(decl instanceof IASTSimpleDeclaration) {
			IParser expressionParser = getExpressionStatementParser();
			IASTExpression expr = (IASTExpression) runSecondaryParser(expressionParser);
			
			if(expr != null && !(expr instanceof IASTProblemExpression)) { // the parse may fail
				expressionStatement = nodeFactory.newExpressionStatement(expr);
				setOffsetAndLength(expressionStatement);
			}
		}
		
		IASTNode result;
		if(expressionStatement == null)
			result = declarationStatement;
		else if(isImplicitInt(decl))
			result = expressionStatement;
		else {
			result = nodeFactory.newAmbiguousStatement(declarationStatement, expressionStatement);
			setOffsetAndLength(result);
		}
			
		astStack.push(result);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * Returns true if the given declaration has unspecified type,
     * in this case the type defaults to int and is know as "implicit int".
     * 
	 * With implicit int a lot of language constructs can be accidentally parsed
	 * as declarations:
	 * 
	 * eg) x = 1;
	 * Should be an assignment statement but can also be parsed as a declaration
	 * of a variable x, of unspecified type, initialized to 1.
	 * 
	 * These cases are easy to detect (using this method) and the wrong interpretation
	 * as a declaration is discarded.
     */
    protected static boolean isImplicitInt(IASTDeclaration declaration) {
    	if(declaration instanceof IASTSimpleDeclaration) {
    		IASTDeclSpecifier declSpec = ((IASTSimpleDeclaration)declaration).getDeclSpecifier();
    		if(declSpec instanceof IASTSimpleDeclSpecifier && 
    		   ((IASTSimpleDeclSpecifier)declSpec).getType() == IASTSimpleDeclSpecifier.t_unspecified) {
    			
    			return true;
    		}
    	}
    	return false;
    }
  	
	
	/**
	 * @param kind One of the kind flags from IASTLiteralExpression or ICPPASTLiteralExpression
	 * @see IASTLiteralExpression
	 * @see ICPPASTLiteralExpression
	 */
	public void consumeExpressionLiteral(int kind) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IToken token = parser.getRightIToken();
		String rep = token.toString();
		
		// Strip the quotes from string literals, this is just to be consistent
		// with the dom parser (i.e. to make a test pass)
//		if(kind == IASTLiteralExpression.lk_string_literal && 
//				rep.startsWith("\"") && rep.endsWith("\"")) {
//			rep = rep.substring(1, rep.length()-1);			
//		}
		
		IASTLiteralExpression expr = nodeFactory.newLiteralExpression(kind, rep);
		setOffsetAndLength(expr, token);
		astStack.push(expr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	

	public void consumeExpressionBracketed() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression operand = (IASTExpression) astStack.pop();
		IASTUnaryExpression expr = nodeFactory.newUnaryExpression(IASTUnaryExpression.op_bracketedPrimary, operand);
        setOffsetAndLength(expr);
		astStack.push(expr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	

	public void consumeExpressionID() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		System.out.println("Right Token: " + parser.getRightIToken());
		System.out.println("Left Token: " + parser.getLeftIToken());
		System.out.println("All Tokens: " + parser.getRuleTokens());
		//IASTName name = createName(parser.getRightIToken());
		IASTName name = createName(parser.getLeftIToken());
		IASTIdExpression expr = nodeFactory.newIdExpression(name);
        setOffsetAndLength(expr);
        astStack.push(expr);
        
        if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	public void consumeExpressionName() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTName name = (IASTName) astStack.pop();
		IASTIdExpression expr = nodeFactory.newIdExpression(name);
        setOffsetAndLength(expr);
        astStack.push(expr);
        
        if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * expression ::= <openscope-ast> expression_list_actual
	 */
	public void consumeExpressionList() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		List<Object> expressions = astStack.closeScope();
		if(expressions.size() == 1) {
			astStack.push(expressions.get(0));
		}
		else {
			IASTExpressionList exprList = nodeFactory.newExpressionList();
			for(Object o : expressions) {
				exprList.addExpression((IASTExpression)o);
			}
			astStack.push(exprList);
		}
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * postfix_expression ::= postfix_expression '[' expression ']'
	 */
	public void consumeExpressionArraySubscript() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression subscript = (IASTExpression) astStack.pop();
		IASTExpression arrayExpr = (IASTExpression) astStack.pop();
		IASTArraySubscriptExpression expr = nodeFactory.newArraySubscriptExpression(arrayExpr, subscript);
		setOffsetAndLength(expr);
		astStack.push(expr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * postfix_expression ::= postfix_expression '(' expression_list_opt ')'
	 */
	public void consumeExpressionFunctionCall() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression argList = (IASTExpression) astStack.pop(); // may be null
		IASTExpression idExpr  = (IASTExpression) astStack.pop();
		
		IASTFunctionCallExpression expr = nodeFactory.newFunctionCallExpression(idExpr, argList);
		setOffsetAndLength(expr);
		astStack.push(expr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	/**
	 * @param operator constant for {@link ICPPASTCastExpression}
	 */
	public void consumeExpressionCast(int operator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression operand = (IASTExpression) astStack.pop();
		IASTTypeId typeId = (IASTTypeId) astStack.pop();
		IASTCastExpression expr = nodeFactory.newCastExpression(operator, typeId, operand);
		setOffsetAndLength(expr);
		
		IASTNode alternateExpr = null;
		if(operator == IASTCastExpression.op_cast) { // don't reparse for dynamic_cast etc as those are not ambiguous
			// try parsing as non-cast to resolve ambiguities
			IParser secondaryParser = getNoCastExpressionParser();
			alternateExpr = runSecondaryParser(secondaryParser);
		}
		
		if(alternateExpr == null || alternateExpr instanceof IASTProblemExpression)
			astStack.push(expr);
		else {
			IASTNode ambiguityNode = nodeFactory.newAmbiguousExpression(expr, (IASTExpression)alternateExpr);
			setOffsetAndLength(ambiguityNode);
			astStack.push(ambiguityNode);
		}

		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * Lots of rules, no need to list them.
	 * @param operator From IASTUnaryExpression
	 */
	public void consumeExpressionUnaryOperator(int operator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression operand = (IASTExpression) astStack.pop();
		IASTUnaryExpression expr = nodeFactory.newUnaryExpression(operator, operand);
		setOffsetAndLength(expr);
		astStack.push(expr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	/**
	 * unary_operation ::= 'sizeof' '(' type_name ')'
	 * @see consumeExpressionUnaryOperator For the other use of sizeof
	 */
	public void consumeExpressionTypeId(int operator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTTypeId typeId = (IASTTypeId) astStack.pop();
		IASTTypeIdExpression expr = nodeFactory.newTypeIdExpression(operator, typeId);
		setOffsetAndLength(expr);
		
		// try parsing as an expression to resolve ambiguities
		IParser secondaryParser = getSizeofExpressionParser(); 
		IASTNode alternateExpr = runSecondaryParser(secondaryParser);
		
		if(alternateExpr == null || alternateExpr instanceof IASTProblemExpression)
			astStack.push(expr);
		else {
			IASTNode ambiguityNode = nodeFactory.newAmbiguousExpression(expr, (IASTExpression)alternateExpr);
			setOffsetAndLength(ambiguityNode);
			astStack.push(ambiguityNode);
		}
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	/**
	 * Lots of rules, no need to list them all.
	 * @param op Field from IASTBinaryExpression
	 */
	public void consumeExpressionBinaryOperator(int op) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr2 = (IASTExpression) astStack.pop();
		IASTExpression expr1 = (IASTExpression) astStack.pop();
		IASTBinaryExpression binExpr = nodeFactory.newBinaryExpression(op, expr1, expr2);
		setOffsetAndLength(binExpr);
		astStack.push(binExpr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * conditional_expression ::= logical_OR_expression '?' expression ':' conditional_expression
	 */
	public void consumeExpressionConditional() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr3 = (IASTExpression) astStack.pop();
		IASTExpression expr2 = (IASTExpression) astStack.pop();
		IASTExpression expr1 = (IASTExpression) astStack.pop();
		IASTConditionalExpression condExpr = nodeFactory.newConditionalExpession(expr1, expr2, expr3);
		setOffsetAndLength(condExpr);
		astStack.push(condExpr);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * labeled_statement ::= label_identifier ':' statement
	 * label_identifier ::= identifier 
	 */
	public void consumeStatementLabeled(/*IBinding binding*/) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTStatement body = (IASTStatement) astStack.pop();
		IASTName label = createName(parser.getLeftIToken());
		//label.setBinding(binding);
		IASTLabelStatement stat = nodeFactory.newLabelStatement(label, body);
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * labeled_statement ::= case constant_expression ':'
	 */
	public void consumeStatementCase() { 
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr = (IASTExpression) astStack.pop();
		IASTCaseStatement caseStatement = nodeFactory.newCaseStatement(expr);
		setOffsetAndLength(caseStatement);
		astStack.push(caseStatement);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * labeled_statement ::= default ':'
	 */
	public void consumeStatementDefault() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDefaultStatement stat = nodeFactory.newDefaultStatement();
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	/**
	 * expression_statement ::= ';'
	 */
	public void consumeStatementNull() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTNullStatement stat = nodeFactory.newNullStatement();
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * expression_statement ::= expression ';'
	 */
	public void consumeStatementExpression() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr = (IASTExpression) astStack.pop();
		IASTExpressionStatement stat = nodeFactory.newExpressionStatement(expr);
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	/**
	 * compound_statement ::= <openscope> '{' block_item_list '}'
	 * 
	 * block_item_list ::= block_item | block_item_list block_item
	 */
	public void consumeStatementCompoundStatement(boolean hasStatementsInBody) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTCompoundStatement block = nodeFactory.newCompoundStatement();
		
		if(hasStatementsInBody) {
			for(Object o : astStack.closeScope()) {
				block.addStatement((IASTStatement)o);
			}
		}
		
		setOffsetAndLength(block);
		astStack.push(block);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	/**
	 * iteration_statement_matched
	 *     ::= 'do' statement 'while' '(' expression ')' ';'
	 */
	public void consumeStatementDoLoop() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression condition = (IASTExpression) astStack.pop();
		IASTStatement body = (IASTStatement) astStack.pop();
		IASTDoStatement stat = nodeFactory.newDoStatement(body, condition);
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	

	/**
	 * jump_statement ::= goto goto_identifier ';'
	 */
	public void consumeStatementGoto(/*IBinding binding*/) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTName name = createName(parser.getRuleTokens().get(1));
		//name.setBinding(binding);
		IASTGotoStatement gotoStat = nodeFactory.newGotoStatement(name);
		setOffsetAndLength(gotoStat);
		astStack.push(gotoStat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * jump_statement ::= continue ';'
	 */
	public void consumeStatementContinue() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTContinueStatement stat = nodeFactory.newContinueStatement();
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * jump_statement ::= break ';'
	 */
	public void consumeStatementBreak() {   
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTBreakStatement stat = nodeFactory.newBreakStatement();
		setOffsetAndLength(stat);
		astStack.push(stat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * jump_statement ::= return ';'
	 * jump_statement ::= return expression ';'
	 */
	public void consumeStatementReturn(boolean hasExpr) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr = hasExpr ? (IASTExpression) astStack.pop() : null;
		IASTReturnStatement returnStat = nodeFactory.newReturnStatement(expr);
		setOffsetAndLength(returnStat);
		astStack.push(returnStat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	
	/**
	 * iteration_statement_matched
	 *     ::= 'for' '(' expression_opt ';' expression_opt ';' expression_opt ')' statement
	 */
	public void consumeStatementForLoop() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTStatement body = (IASTStatement) astStack.pop();
		// these two expressions may be null, see consumeExpressionOptional()
		IASTExpression expr3 = (IASTExpression) astStack.pop();
		IASTExpression expr2 = (IASTExpression) astStack.pop();
		IASTNode node = (IASTNode) astStack.pop(); // may be an expression or a declaration
		
		IASTStatement initializer;
		if(node instanceof IASTExpression)
			initializer = nodeFactory.newExpressionStatement((IASTExpression)node);
		else if(node instanceof IASTDeclaration)
			initializer = nodeFactory.newDeclarationStatement((IASTDeclaration)node);
		else // its null
			initializer = nodeFactory.newNullStatement();
		
		if(node != null)
			setOffsetAndLength(initializer, offset(node), length(node));
		
		IASTForStatement forStat = nodeFactory.newForStatement(initializer, expr2, expr3, body);
		setOffsetAndLength(forStat);
		astStack.push(forStat);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	/**
	 * type_name ::= specifier_qualifier_list
     *             | specifier_qualifier_list abstract_declarator
	 */
	public void consumeTypeId(boolean hasDeclarator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclarator declarator;
		if(hasDeclarator)
			declarator = (IASTDeclarator) astStack.pop();
		else {
			declarator = nodeFactory.newDeclarator(nodeFactory.newName());
			setOffsetAndLength(declarator, parser.getRightIToken().getEndOffset(), 0);
		}
			
		IASTDeclSpecifier declSpecifier = (IASTDeclSpecifier) astStack.pop();
		IASTTypeId typeId = nodeFactory.newTypeId(declSpecifier, declarator);
		setOffsetAndLength(typeId);
		astStack.push(typeId);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * declarator
     *     ::= <openscope-ast> ptr_operator_seq direct_declarator
     *     
     * abstract_declarator
     *     ::= <openscope-ast> ptr_operator_seq
     *       | <openscope-ast> ptr_operator_seq direct_declarator
	 */
	public void consumeDeclaratorWithPointer(boolean hasDeclarator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclarator decl;
		if(hasDeclarator)
			decl = (IASTDeclarator) astStack.pop();
		else
			decl = nodeFactory.newDeclarator(nodeFactory.newName());
		
		for(Object pointer : astStack.closeScope())
			decl.addPointerOperator((IASTPointerOperator)pointer);
		
		setOffsetAndLength(decl);
		astStack.push(decl);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
    
    /**
     * init_declarator
     *     ::= declarator initializer
     *     
     * @param hasDeclarator in C++ its possible for a parameter declaration to specifiy
     *        a default value without also specifying a named declarator
     */
    public void consumeDeclaratorWithInitializer(boolean hasDeclarator) {
	   	if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
	   	 
	   	IASTInitializer initializer = (IASTInitializer) astStack.pop();
	   	
	   	IASTDeclarator declarator;
	   	if(hasDeclarator) {
	   		declarator = (IASTDeclarator) astStack.peek();
	   	}
	   	else {
	   		IASTName emptyName = nodeFactory.newName();
	   		declarator = nodeFactory.newDeclarator(emptyName);
	   		setOffsetAndLength(emptyName);
	   		astStack.push(declarator);
	   	}
	   	
		declarator.setInitializer(initializer);
		setOffsetAndLength(declarator); // adjust the length to include the initializer
	   	 
	   	if(TRACE_AST_STACK) System.out.println(astStack);
    }
	
	
    
    /**
	 * parameter_declaration ::= declaration_specifiers declarator
     *                         | declaration_specifiers abstract_declarator
	 */
	public void consumeParameterDeclaration() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclarator declarator  = (IASTDeclarator) astStack.pop();
		IASTDeclSpecifier declSpec = (IASTDeclSpecifier) astStack.pop();
		IASTParameterDeclaration declaration = nodeFactory.newParameterDeclaration(declSpec, declarator);
		setOffsetAndLength(declaration);
		astStack.push(declaration);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * parameter_declaration ::= declaration_specifiers   
	 */
	public void consumeParameterDeclarationWithoutDeclarator() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		// offsets need to be calculated differently in this case		
		final int endOffset = parser.getRightIToken().getEndOffset();
		
		IASTName name = nodeFactory.newName();
		setOffsetAndLength(name, endOffset, 0);
		
		// it appears that a declarator is always required in the AST here
		IASTDeclarator declarator = nodeFactory.newDeclarator(name);
		setOffsetAndLength(declarator, endOffset, 0);
		
		IASTDeclSpecifier declSpec = (IASTDeclSpecifier) astStack.pop();
		IASTParameterDeclaration declaration = nodeFactory.newParameterDeclaration(declSpec, declarator);
		
		setOffsetAndLength(declaration);
		astStack.push(declaration);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * TODO: do I really want to share declaration rules between the two parsers.
	 * Even if there is potential for reuse it still may be cleaner to leave the 
	 * common stuff to just simple expressions and statements.
	 * 
	 * For C99:
	 * 
	 * declaration ::= declaration_specifiers <openscope> init_declarator_list ';'
	 * declaration ::= declaration_specifiers  ';'
	 * 
	 * 
	 * For C++:
	 * 
	 * simple_declaration
     *     ::= declaration_specifiers_opt <openscope-ast> init_declarator_list_opt ';'
     *     
     *     
     * TODO Make both grammars the same here.
	 */
//	public void consumeDeclarationSimple(boolean hasDeclaratorList) {
//		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
//		
//		List<Object> declarators = (hasDeclaratorList) ? astStack.closeScope() : Collections.emptyList();
//		IASTDeclSpecifier declSpecifier = (IASTDeclSpecifier) astStack.pop(); // may be null
//		
//		// do not generate nodes for extra EOC tokens
//		if(matchTokens(parser.getRuleTokens(), CPPParsersym.TK_EndOfCompletion))
//			return;
//
//		if(declSpecifier == null) { // can happen if implicit int is used
//			declSpecifier = nodeFactory.newSimpleDeclSpecifier();
//			setOffsetAndLength(declSpecifier, parser.getLeftIToken().getStartOffset(), 0);
//		}
//
//		IASTSimpleDeclaration declaration = nodeFactory.newSimpleDeclaration(declSpecifier);
//		
//		for(Object declarator : declarators)
//			declaration.addDeclarator((IASTDeclarator)declarator);
//
//		setOffsetAndLength(declaration);
//		astStack.push(declaration);
//		
//		if(TRACE_AST_STACK) System.out.println(astStack);
//	}
	
	
	/**
	 * direct_declarator ::= '(' declarator ')'
	 */
	public void consumeDirectDeclaratorBracketed() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclarator nested = (IASTDeclarator) astStack.pop();
		IASTDeclarator declarator = nodeFactory.newDeclarator(nodeFactory.newName());
		declarator.setNestedDeclarator(nested);
		setOffsetAndLength(declarator);
		astStack.push(declarator);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * direct_declarator ::= declarator_id_name
	 */
	public void consumeDirectDeclaratorIdentifier() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTName name = (IASTName) astStack.pop();
		IASTDeclarator declarator = nodeFactory.newDeclarator(name);
		setOffsetAndLength(declarator);
		astStack.push(declarator);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 *  array_modifier 
	 *      ::= '[' ']' 
     *        | '[' assignment_expression ']'
     */        
	public void consumeDirectDeclaratorArrayModifier(boolean hasAssignmentExpr) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();

		IASTExpression expr = hasAssignmentExpr ? (IASTExpression)astStack.pop() : null;
		IASTArrayModifier arrayModifier = nodeFactory.newArrayModifier(expr);
		setOffsetAndLength(arrayModifier);
		astStack.push(arrayModifier);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * When the identifier part of a declarator is parsed it will put a plain IASTDeclarator on the stack.
	 * When the array modifier part is parsed we will need to throw away the plain
	 * declarator and replace it with an array declarator. If its a multidimensional array then
	 * the additional array modifiers will need to be added to the array declarator.
	 * Special care is taken for nested declarators.
	 */
	protected void addArrayModifier(IASTArrayModifier arrayModifier) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTDeclarator node = (IASTDeclarator) astStack.pop();
		
		// Its a nested declarator so create an new ArrayDeclarator
		if(node.getNestedDeclarator() != null) {  //node.getPropertyInParent() == IASTDeclarator.NESTED_DECLARATOR) {
			IASTArrayDeclarator declarator = nodeFactory.newArrayDeclarator(nodeFactory.newName());
			IASTDeclarator nested = node;
			declarator.setNestedDeclarator(nested);
			
			int offset = offset(nested);
			int length = endOffset(arrayModifier) - offset;
			setOffsetAndLength(declarator, offset, length);
			
			declarator.addArrayModifier(arrayModifier);
			astStack.push(declarator);
		}
		// There is already an array declarator so just add the modifier to it
		else if(node instanceof IASTArrayDeclarator) {
			IASTArrayDeclarator decl = (IASTArrayDeclarator) node;
			((ASTNode)decl).setLength(endOffset(arrayModifier) - offset(decl));
			
			decl.addArrayModifier(arrayModifier);
			astStack.push(decl);
		}
		// The declarator is an identifier so create a new array declarator
		else  {
			IASTName name = node.getName();
			IASTArrayDeclarator decl = nodeFactory.newArrayDeclarator(name);
			
			int offset = offset(name);
			int length = endOffset(arrayModifier) - offset;
			setOffsetAndLength(decl, offset, length);
			
			decl.addArrayModifier(arrayModifier);
			astStack.push(decl);
		}
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * Pops a simple declarator from the stack, converts it into 
	 * a FunctionDeclator, then pushes it.
	 * TODO: is this the best way of doing this?
	 * TODO, rename this method, its an accidental overload
	 */
	protected void addFunctionModifier(IASTFunctionDeclarator declarator, int endOffset) {
		IASTDeclarator decl = (IASTDeclarator) astStack.pop();
		 
		if(decl.getNestedDeclarator() != null) { 
			decl = decl.getNestedDeclarator(); // need to remove one level of nesting for function pointers
			declarator.setNestedDeclarator(decl);
			declarator.setName(nodeFactory.newName());
			int offset = offset(decl);
			setOffsetAndLength(declarator, offset, endOffset - offset);
			astStack.push(declarator);
		}
		else  {
			IASTName name = decl.getName();
			if(name == null) {
				name = nodeFactory.newName();
			}
			declarator.setName(name);
			
			IASTPointerOperator[] pointers = decl.getPointerOperators();
			for(int i = 0; i < pointers.length; i++) {
				declarator.addPointerOperator(pointers[i]);
			}
			
			int offset = offset(name); // TODO
			setOffsetAndLength(declarator, offset, endOffset - offset);
			astStack.push(declarator);
		}

		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
//	/**
//	 * direct_declarator ::= direct_declarator array_modifier
//	 * consume the direct_declarator part and add the array modifier
//	 */
//	public void consumeDirectDeclaratorArrayDeclarator() {
//		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
//		
//		IASTArrayModifier arrayModifier = (IASTArrayModifier) astStack.pop();
//		addArrayModifier(arrayModifier);
//	}
	
	/**
	 * direct_abstract_declarator   
     *     ::= array_modifier
     *       | direct_abstract_declarator array_modifier
	 */
	public void consumeDirectDeclaratorArrayDeclarator(boolean hasDeclarator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTArrayModifier arrayModifier = (IASTArrayModifier) astStack.pop();
		
		if(hasDeclarator) {
			addArrayModifier(arrayModifier);
		}
		else {
			IASTArrayDeclarator decl = nodeFactory.newArrayDeclarator(nodeFactory.newName());
			decl.addArrayModifier(arrayModifier);
			setOffsetAndLength(decl);
			astStack.push(decl);
			
			if(TRACE_AST_STACK) System.out.println(astStack);
		}
	}
	
	
	
	
	/**
	 * enum_specifier ::= 'enum' '{' <openscope> enumerator_list_opt '}'
     *                  | 'enum' enum_identifier '{' <openscope> enumerator_list_opt '}'
	 */
	public void consumeTypeSpecifierEnumeration(boolean hasIdent) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTName name = (hasIdent) ? createName(parser.getRuleTokens().get(1)) : nodeFactory.newName();
		
		IASTEnumerationSpecifier enumSpec = nodeFactory.newEnumerationSpecifier(name);

		for(Object o : astStack.closeScope())
			enumSpec.addEnumerator((IASTEnumerator)o);

		setOffsetAndLength(enumSpec);
		astStack.push(enumSpec);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * enumerator ::= enum_identifier
     *              | enum_identifier '=' constant_expression
	 */
	public void consumeEnumerator(boolean hasInitializer) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTName name = createName(parser.getLeftIToken());
		
		IASTExpression value = null;
		if(hasInitializer)
			value = (IASTExpression) astStack.pop();
		
		IASTEnumerator enumerator = nodeFactory.newEnumerator(name, value);
		setOffsetAndLength(enumerator);
		astStack.push(enumerator);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	/**
	 * initializer ::= assignment_expression
	 */
	public void consumeInitializer() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr = (IASTExpression) astStack.pop();
		IASTInitializerExpression initializer = nodeFactory.newInitializerExpression(expr);
        setOffsetAndLength(initializer);
        astStack.push(initializer);
        
        if(TRACE_AST_STACK) System.out.println(astStack);
	}

	
	/**
	 * initializer ::= '{' <openscope> initializer_list '}'
     *               | '{' <openscope> initializer_list ',' '}'
	 */
	public void consumeInitializerList() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTInitializerList list = nodeFactory.newInitializerList();

		for(Object o : astStack.closeScope())
			list.addInitializer((IASTInitializer)o);
		
		setOffsetAndLength(list);
		astStack.push(list);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	/**
	 * struct_declarator
     *     ::= ':' constant_expression  
     *       | declarator ':' constant_expression		
	 */
	public void consumeBitField(boolean hasDeclarator) {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		IASTExpression expr = (IASTExpression)astStack.pop();
		
		IASTName name;
		if(hasDeclarator) // it should have been parsed into a regular declarator
			name = ((IASTDeclarator) astStack.pop()).getName();
		else
			name = nodeFactory.newName();
		
		IASTFieldDeclarator fieldDecl = nodeFactory.newFieldDeclarator(name, expr);
		setOffsetAndLength(fieldDecl);
		astStack.push(fieldDecl);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}
	
	
	
	
	/**
	 * statement ::= ERROR_TOKEN
	 */
	public void consumeStatementProblem() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		consumeProblem(nodeFactory.newProblemStatement());
	}

	/**
	 * assignment_expression ::= ERROR_TOKEN
	 * constant_expression ::= ERROR_TOKEN
	 */
	public void consumeExpressionProblem() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		consumeProblem(nodeFactory.newProblemExpression());
	}

	/**
	 * external_declaration ::= ERROR_TOKEN
	 */
	public void consumeDeclarationProblem() {
		if(TRACE_ACTIONS) DebugUtil.printMethodTrace();
		
		consumeProblem(nodeFactory.newProblemDeclaration());
	}

	
	private void consumeProblem(IASTProblemHolder problemHolder) {
		IASTProblem problem = nodeFactory.newProblem(IASTProblem.SYNTAX_ERROR, new char[0], true);
		problemHolder.setProblem(problem);		
		setOffsetAndLength(problem);
		setOffsetAndLength((ASTNode)problemHolder);
		astStack.push(problemHolder);
		
		if(TRACE_AST_STACK) System.out.println(astStack);
	}

}

Back to the top