Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: af3682f5fa04867cd6d8e767e8e9d5df4ee417b0 (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
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
/*******************************************************************************
 * Copyright (c) 2004, 2019 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * This is an implementation of an early-draft specification developed under the Java
 * Community Process (JCP) and is made available for testing and evaluation purposes
 * only. The code is not compatible with any specification of the JCP.
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Stephan Herrmann - Contribution for
 *								Bug 458577 - IClassFile.getWorkingCopy() may lead to NPE in BecomeWorkingCopyOperation
 *******************************************************************************/
package org.eclipse.jdt.core.dom;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.jdt.core.IClassFile;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.ITypeRoot;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.WorkingCopyOwner;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ExplicitConstructorCall;
import org.eclipse.jdt.internal.compiler.batch.Main;
import org.eclipse.jdt.internal.compiler.batch.FileSystem.Classpath;
import org.eclipse.jdt.internal.compiler.env.IBinaryType;
import org.eclipse.jdt.internal.compiler.parser.RecoveryScanner;
import org.eclipse.jdt.internal.compiler.parser.RecoveryScannerData;
import org.eclipse.jdt.internal.compiler.parser.Scanner;
import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
import org.eclipse.jdt.internal.core.*;
import org.eclipse.jdt.internal.core.util.CodeSnippetParsingUtil;
import org.eclipse.jdt.internal.core.util.RecordedParsingInformation;
import org.eclipse.jdt.internal.core.util.Util;

/**
 * A Java language parser for creating abstract syntax trees (ASTs).
 * <p>
 * Example: Create basic AST from source string
 * <pre>
 * char[] source = ...;
 * ASTParser parser = ASTParser.newParser(AST.JLS3);  // handles JDK 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6
 * parser.setSource(source);
 * // In order to parse 1.5 code, some compiler options need to be set to 1.5
 * Map options = JavaCore.getOptions();
 * JavaCore.setComplianceOptions(JavaCore.VERSION_1_5, options);
 * parser.setCompilerOptions(options);
 * CompilationUnit result = (CompilationUnit) parser.createAST(null);
 * </pre>
 * Once a configured parser instance has been used to create an AST,
 * the settings are automatically reset to their defaults,
 * ready for the parser instance to be reused.
 * </p>
 * <p>
 * There are a number of configurable features:
 * <ul>
 * <li>Source string from {@link #setSource(char[]) char[]},
 * {@link #setSource(ICompilationUnit) ICompilationUnit},
 * or {@link #setSource(IClassFile) IClassFile}, and limited
 * to a specified {@linkplain #setSourceRange(int,int) subrange}.</li>
 * <li>Whether {@linkplain #setResolveBindings(boolean) bindings} will be created.</li>
 * <li>Which {@linkplain #setWorkingCopyOwner(WorkingCopyOwner)
 * working copy owner} to use when resolving bindings.</li>
 * <li>A hypothetical {@linkplain #setUnitName(String) compilation unit file name}
 * and {@linkplain #setProject(IJavaProject) Java project}
 * for locating a raw source string in the Java model (when
 * resolving bindings)</li>
 * <li>Which {@linkplain #setCompilerOptions(Map) compiler options}
 * to use. This is especially important to use if the parsing/scanning of the source code requires a
 * different version than the default of the workspace. For example, the workspace defaults are 1.4 and
 * you want to create an AST for a source code that is using 1.5 constructs.</li>
 * <li>Whether to parse just {@linkplain #setKind(int) an expression, statements,
 * or body declarations} rather than an entire compilation unit.</li>
 * <li>Whether to return a {@linkplain #setFocalPosition(int) abridged AST}
 * focused on the declaration containing a given source position.</li>
 * </ul>
 * </p>
 *
 * @since 3.0
 * @noinstantiate This class is not intended to be instantiated by clients.
 */
@SuppressWarnings({"rawtypes"})
public class ASTParser {

	/**
	 * Kind constant used to request that the source be parsed
     * as a single expression.
	 */
	public static final int K_EXPRESSION = 0x01;

	/**
	 * Kind constant used to request that the source be parsed
     * as a sequence of statements.
	 */
	public static final int K_STATEMENTS = 0x02;

	/**
	 * Kind constant used to request that the source be parsed
	 * as a sequence of class body declarations.
	 */
	public static final int K_CLASS_BODY_DECLARATIONS = 0x04;

	/**
	 * Kind constant used to request that the source be parsed
	 * as a compilation unit.
	 */
	public static final int K_COMPILATION_UNIT = 0x08;

	/**
	 * Creates a new object for creating a Java abstract syntax tree
     * (AST) following the specified set of API rules.
     *
 	 * @param level the API level; one of the <code>.JLS*</code> level constants
     * declared on {@link AST}
	 * @return new ASTParser instance
	 */
	public static ASTParser newParser(int level) {
		return new ASTParser(level);
	}

	/**
	 * Level of AST API desired.
	 */
	private final int apiLevel;

	/**
	 * Kind of parse requested. Defaults to an entire compilation unit.
	 */
	private int astKind;

	/**
	 * Compiler options. Defaults to JavaCore.getOptions().
	 */
	private Map<String, String> compilerOptions;
	
    /**
	 * The focal point for a partial AST request.
     * Only used when <code>partial</code> is <code>true</code>.
     */
	private int focalPointPosition;

    /**
     * Source string.
     */
    private char[] rawSource = null;

    /**
     * Java model class file or compilation unit supplying the source.
     */
    private ITypeRoot typeRoot = null;

    /**
     * Character-based offset into the source string where parsing is to
     * begin. Defaults to 0.
     */
	private int sourceOffset = 0;

    /**
     * Character-based length limit, or -1 if unlimited.
     * All characters in the source string between <code>offset</code>
     * and <code>offset+length-1</code> inclusive are parsed. Defaults to -1,
     * which means the rest of the source string.
     */
	private int sourceLength = -1;

    /**
     * Working copy owner. Defaults to primary owner.
     */
	private WorkingCopyOwner workingCopyOwner = DefaultWorkingCopyOwner.PRIMARY;

    /**
	 * Java project used to resolve names, or <code>null</code> if none.
     * Defaults to none.
     */
	private IJavaProject project = null;

    /**
	 * Name of the compilation unit for resolving bindings, or
	 * <code>null</code> if none. Defaults to none.
     */
	private String unitName = null;
	
	/**
	 * Classpath entries to use to resolve bindings when no java project are available.
	 */
	private String[] classpaths;

	/**
	 * Sourcepath entries to use to resolve bindings when no java project are available.
	 */
	private String[] sourcepaths;
	
	/**
	 * Encoding of the given sourcepaths entries.
	 */
	private String[] sourcepathsEncodings;
	
	/**
	 * Bits used to set the different values from CompilationUnitResolver values.
	 */
	private int bits;

	/**
	 * Creates a new AST parser for the given API level.
	 * <p>
	 * N.B. This constructor is package-private.
	 * </p>
	 *
	 * @param level the API level; one of the <code>JLS*</code> level constants
	 * declared on {@link AST}
	 */
	ASTParser(int level) {
		switch(level) {
			case AST.JLS2_INTERNAL:
			case AST.JLS3_INTERNAL:
			case AST.JLS4_INTERNAL:
			case AST.JLS8_INTERNAL:
			case AST.JLS9_INTERNAL:
			case AST.JLS10_INTERNAL:
			case AST.JLS11_INTERNAL:
			case AST.JLS12_INTERNAL:
				break;
			default:
				throw new IllegalArgumentException();
		}
		this.apiLevel = level;
		initializeDefaults();
	}

	private List<Classpath> getClasspath() throws IllegalStateException {
		Main main = new Main(new PrintWriter(System.out), new PrintWriter(System.err), false/*systemExit*/, null/*options*/, null/*progress*/);
		ArrayList<Classpath> allClasspaths = new ArrayList<Classpath>();
		try {
			if ((this.bits & CompilationUnitResolver.INCLUDE_RUNNING_VM_BOOTCLASSPATH) != 0) {
				org.eclipse.jdt.internal.compiler.util.Util.collectRunningVMBootclasspath(allClasspaths);
			}
			if (this.sourcepaths != null) {
				for (int i = 0, max = this.sourcepaths.length; i < max; i++) {
					String encoding = this.sourcepathsEncodings == null ? null : this.sourcepathsEncodings[i];
					main.processPathEntries(
							Main.DEFAULT_SIZE_CLASSPATH,
							allClasspaths, this.sourcepaths[i], encoding, true, false);
				}
			}
			if (this.classpaths != null) {
				for (int i = 0, max = this.classpaths.length; i < max; i++) {
					main.processPathEntries(
							Main.DEFAULT_SIZE_CLASSPATH,
							allClasspaths, this.classpaths[i], null, false, false);
				}
			}
			ArrayList pendingErrors = main.pendingErrors;
			if (pendingErrors != null && pendingErrors.size() != 0) {
				throw new IllegalStateException("invalid environment settings"); //$NON-NLS-1$
			}
		} catch (IllegalArgumentException e) {
			throw new IllegalStateException("invalid environment settings", e); //$NON-NLS-1$
		}
		return allClasspaths;
	}
	/**
	 * Sets all the setting to their default values.
	 */
	private void initializeDefaults() {
		this.astKind = K_COMPILATION_UNIT;
		this.rawSource = null;
		this.typeRoot = null;
		this.bits = 0;
		this.sourceLength = -1;
		this.sourceOffset = 0;
		this.workingCopyOwner = DefaultWorkingCopyOwner.PRIMARY;
		this.unitName = null;
		this.project = null;
		this.classpaths = null;
		this.sourcepaths = null;
		this.sourcepathsEncodings = null;
		Map<String, String> options = JavaCore.getOptions();
		options.remove(JavaCore.COMPILER_TASK_TAGS); // no need to parse task tags
		this.compilerOptions = options;
	}

	/**
	 * Requests that the compiler should perform bindings recovery.
	 * When bindings recovery is enabled the compiler returns incomplete bindings.
	 * <p>
	 * Default to <code>false</code>.
	 * </p>
	 * <p>This should be set to true only if bindings are resolved. It has no effect if there is no binding
	 * resolution.</p>
	 *
	 * @param enabled <code>true</code> if incomplete bindings are expected,
	 *   and <code>false</code> if only complete bindings are expected.
	 *
	 * @see IBinding#isRecovered()
	 * @since 3.3
	 */
	public void setBindingsRecovery(boolean enabled) {
		if (enabled) {
			this.bits |= CompilationUnitResolver.BINDING_RECOVERY;
		} else {
			this.bits &= ~CompilationUnitResolver.BINDING_RECOVERY;
		}
	}
	
	/**
	 * Sets the environment to be used when no {@link IJavaProject} is available.
	 * 
	 * <p>The user has to make sure that all the required types are included either in the classpath or source paths. 
	 * All the paths containing binary types must be included in the <code>classpathEntries</code> whereas all paths containing  
	 * source types must be included in the <code>sourcepathEntries</code>.</p>
	 * <p>All paths in the <code>classpathEntries</code> and <code>sourcepathEntries</code> are absolute paths.</p>
	 * <p>If the source paths contain units using a specific encoding (other than the platform encoding), then the
	 * given <code>encodings</code> must be set. When the <code>encodings</code> is set to non <code>null</code>, its length must
	 * match the length of <code>sourcepathEntries</code> or an IllegalArgumentException will be thrown.</p>
	 * <p>If <code>encodings</code> is not <code>null</code>, the given <code>sourcepathEntries</code> must not be <code>null</code>.</p>
	 * 
	 * @param classpathEntries the given classpath entries to be used to resolve bindings
	 * @param sourcepathEntries the given sourcepath entries to be used to resolve bindings
	 * @param encodings the encodings of the corresponding sourcepath entries or <code>null</code> if the platform encoding
	 * can be used.
	 * @param includeRunningVMBootclasspath <code>true</code> if the bootclasspath of the running VM must be prepended to the
	 * given classpath and <code>false</code> if the bootclasspath of the running VM should be ignored.
	 * @throws IllegalArgumentException if the size of the given encodings is not equals to the size of the given <code>
	 * sourcepathEntries</code>
	 * @since 3.6
	 */
	public void setEnvironment(String[] classpathEntries, String[] sourcepathEntries, String[] encodings, boolean includeRunningVMBootclasspath) {
		this.classpaths = classpathEntries;
		this.sourcepaths = sourcepathEntries;
		this.sourcepathsEncodings = encodings;
		if (encodings != null) {
			if (sourcepathEntries == null || sourcepathEntries.length != encodings.length) {
				throw new IllegalArgumentException(); 
			}
		}
		if (includeRunningVMBootclasspath) {
			this.bits |= CompilationUnitResolver.INCLUDE_RUNNING_VM_BOOTCLASSPATH;
		}
	}
	/**
	 * Sets the compiler options to be used when parsing.
	 * <p>
	 * Note that {@link #setSource(IClassFile)},
	 * {@link #setSource(ICompilationUnit)},
	 * and {@link #setProject(IJavaProject)} reset the compiler options
	 * based on the Java project. In other cases, compiler options default
	 * to {@link JavaCore#getOptions()}. In either case, and especially
	 * in the latter, the caller should carefully weight the consequences of
	 * allowing compiler options to be defaulted as opposed to being
	 * explicitly specified for the {@link ASTParser} instance.
	 * For instance, there is a compiler option called "Source Compatibility Mode"
	 * which determines which JDK level the source code is expected to meet.
	 * If you specify "1.4", then "assert" is treated as a keyword and disallowed
	 * as an identifier; if you specify "1.3", then "assert" is allowed as an
	 * identifier. So this particular setting has a major bearing on what is
	 * considered syntactically legal. By explicitly specifying the setting,
	 * the client control exactly how the parser works. On the other hand,
	 * allowing default settings means the parsing behaves like other JDT tools.
	 * </p>
	 *
	 * @param options the table of options (key type: <code>String</code>;
	 * value type: <code>String</code>), or <code>null</code>
	 * to set it back to the default
	 */
	public void setCompilerOptions(Map<String, String> options) {
		if (options == null) {
			options = JavaCore.getOptions();
		} else {
			// copy client's options so as to not do any side effect on them
			options = new HashMap<>(options);
		}
		options.remove(JavaCore.COMPILER_TASK_TAGS); // no need to parse task tags
		this.compilerOptions = options;
	}

	/**
	 * Requests that the compiler should provide binding information for
	 * the AST nodes it creates.
	 * <p>
	 * Defaults to <code>false</code> (no bindings).
	 * </p>
	 * <p>
	 * If {@link #setResolveBindings(boolean) setResolveBindings(true)}, the various names
	 * and types appearing in the AST can be resolved to "bindings"
	 * by calling the <code>resolveBinding</code> methods. These bindings
	 * draw connections between the different parts of a program, and
	 * generally afford a more powerful vantage point for clients who wish to
	 * analyze a program's structure more deeply. These bindings come at a
	 * considerable cost in both time and space, however, and should not be
	 * requested frivolously. The additional space is not reclaimed until the
	 * AST, all its nodes, and all its bindings become garbage. So it is very
	 * important to not retain any of these objects longer than absolutely
	 * necessary. Bindings are resolved at the time the AST is created. Subsequent
	 * modifications to the AST do not affect the bindings returned by
	 * <code>resolveBinding</code> methods in any way; these methods return the
	 * same binding as before the AST was modified (including modifications
	 * that rearrange subtrees by reparenting nodes).
	 * If {@link #setResolveBindings(boolean) setResolveBindings(false)}, (the default), the analysis
	 * does not go beyond parsing and building the tree, and all
	 * <code>resolveBinding</code> methods return <code>null</code> from the outset.
	 * </p>
	 * <p>
	 * When bindings are requested, instead of considering compilation units on disk only,
	 * one can also supply a <code>WorkingCopyOwner</code>. Working copies owned
	 * by this owner take precedence over the underlying compilation units when looking
	 * up names and drawing the connections.
	 * </p>
	 * <p>Note that working copy owners are used only if the <code>org.eclipse.jdt.core</code>
	 * bundle is initialized.</p>
	 * <p>
	 * Binding information is obtained from the Java model.
	 * This means that the compilation unit must be located relative to the
	 * Java model. This happens automatically when the source code comes from
	 * either {@link #setSource(ICompilationUnit) setSource(ICompilationUnit)}
	 * or {@link #setSource(IClassFile) setSource(IClassFile)}.
	 * When source is supplied by {@link #setSource(char[]) setSource(char[])},
	 * the location must be established explicitly by setting an environment using
	 * {@link #setProject(IJavaProject)} or {@link #setEnvironment(String[], String[], String[], boolean)} 
	 * and a unit name {@link #setUnitName(String)}.
	 * Note that the compiler options that affect doc comment checking may also
	 * affect whether any bindings are resolved for nodes within doc comments.
	 * </p>
	 *
	 * @param enabled <code>true</code> if bindings are wanted,
	 *   and <code>false</code> if bindings are not of interest
	 */
	public void setResolveBindings(boolean enabled) {
		if (enabled) {
			this.bits |= CompilationUnitResolver.RESOLVE_BINDING;
		} else {
			this.bits &= ~CompilationUnitResolver.RESOLVE_BINDING;
		}
	}

	/**
	 * Requests an abridged abstract syntax tree.
	 * By default, complete ASTs are returned.
	 * <p>
	 * When the given <code>position</code> is a valid position within the source code of 
	 * the compilation unit, the resulting AST does not have nodes for
	 * the entire compilation unit. Rather, the AST is only fleshed out
	 * for the node that include the given source position. This kind of limited
	 * AST is sufficient for certain purposes but totally unsuitable for others.
	 * In places where it can be used, the limited AST offers the advantage of
	 * being smaller and faster to construct.
	 * </p>
	 * <p>
	 * The AST will include nodes for all of the compilation unit's
	 * package, import, and top-level type declarations. It will also always contain
	 * nodes for all the body declarations for those top-level types, as well
	 * as body declarations for any member types. However, some of the body
	 * declarations may be abridged. In particular, the statements ordinarily
	 * found in the body of a method declaration node will not be included
	 * (the block will be empty) unless the source position falls somewhere
	 * within the source range of that method declaration node. The same is true
	 * for initializer declarations; the statements ordinarily found in the body
	 * of initializer node will not be included unless the source position falls
	 * somewhere within the source range of that initializer declaration node.
	 * Field declarations are never abridged. Note that the AST for the body of
	 * that one unabridged method (or initializer) is 100% complete; it has all
	 * its statements, including any local or anonymous type declarations
	 * embedded within them. When the given <code>position</code> is not located within
	 * the source range of any body declaration of a top-level type, the AST
	 * returned will be a skeleton that includes nodes for all and only the major
	 * declarations; this kind of AST is still quite useful because it contains
	 * all the constructs that introduce names visible to the world outside the
	 * compilation unit.
	 * </p>
	 *
	 * <p>This focal position is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 * 
	 * @param position a position into the corresponding body declaration
	 */
	public void setFocalPosition(int position) {
		this.bits |= CompilationUnitResolver.PARTIAL;
		this.focalPointPosition = position;
	}

	/**
	 * Sets the kind of constructs to be parsed from the source.
	 * Defaults to an entire compilation unit.
	 * <p>
	 * When the parse is successful the result returned includes the ASTs for the
	 * requested source:
	 * <ul>
	 * <li>{@link #K_COMPILATION_UNIT K_COMPILATION_UNIT}: The result node
	 * is a {@link CompilationUnit}.</li>
	 * <li>{@link #K_CLASS_BODY_DECLARATIONS K_CLASS_BODY_DECLARATIONS}: The result node
	 * is a {@link TypeDeclaration} whose
	 * {@link TypeDeclaration#bodyDeclarations() bodyDeclarations}
	 * are the new trees. Other aspects of the type declaration are unspecified.</li>
	 * <li>{@link #K_STATEMENTS K_STATEMENTS}: The result node is a
	 * {@link Block Block} whose {@link Block#statements() statements}
	 * are the new trees. Other aspects of the block are unspecified.</li>
	 * <li>{@link #K_EXPRESSION K_EXPRESSION}: The result node is a subclass of
	 * {@link Expression Expression}. Other aspects of the expression are unspecified.</li>
	 * </ul>
	 * The resulting AST node is rooted under (possibly contrived)
	 * {@link CompilationUnit CompilationUnit} node, to allow the
	 * client to retrieve the following pieces of information
	 * available there:
	 * <ul>
	 * <li>{@linkplain CompilationUnit#getLineNumber(int) Line number map}. Line
	 * numbers start at 1 and only cover the subrange scanned
	 * (<code>source[offset]</code> through <code>source[offset+length-1]</code>).</li>
	 * <li>{@linkplain CompilationUnit#getMessages() Compiler messages}
	 * and {@linkplain CompilationUnit#getProblems() detailed problem reports}.
	 * Character positions are relative to the start of
	 * <code>source</code>; line positions are for the subrange scanned.</li>
	 * <li>{@linkplain CompilationUnit#getCommentList() Comment list}
	 * for the subrange scanned.</li>
	 * </ul>
	 * The contrived nodes do not have source positions. Other aspects of the
	 * {@link CompilationUnit CompilationUnit} node are unspecified, including
	 * the exact arrangement of intervening nodes.
	 * </p>
	 * <p>
	 * Lexical or syntax errors detected while parsing can result in
	 * a result node being marked as {@link ASTNode#MALFORMED MALFORMED}.
	 * In more severe failure cases where the parser is unable to
	 * recognize the input, this method returns
	 * a {@link CompilationUnit CompilationUnit} node with at least the
	 * compiler messages.
	 * </p>
	 * <p>Each node in the subtree (other than the contrived nodes)
	 * carries source range(s) information relating back
	 * to positions in the given source (the given source itself
	 * is not remembered with the AST).
	 * The source range usually begins at the first character of the first token
	 * corresponding to the node; leading whitespace and comments are <b>not</b>
	 * included. The source range usually extends through the last character of
	 * the last token corresponding to the node; trailing whitespace and
	 * comments are <b>not</b> included. There are a handful of exceptions
	 * (including the various body declarations); the
	 * specification for these node type spells out the details.
	 * Source ranges nest properly: the source range for a child is always
	 * within the source range of its parent, and the source ranges of sibling
	 * nodes never overlap.
	 * </p>
	 * <p>
	 * Binding information is only computed when <code>kind</code> is
	 * {@link #K_COMPILATION_UNIT}.
	 * </p>
	 * 
	 * <p>This kind is not used when the AST is built using
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 * 
	 * @param kind the kind of construct to parse: one of
	 * {@link #K_COMPILATION_UNIT},
	 * {@link #K_CLASS_BODY_DECLARATIONS},
	 * {@link #K_EXPRESSION},
	 * {@link #K_STATEMENTS}
	 */
	public void setKind(int kind) {
	    if ((kind != K_COMPILATION_UNIT)
		    && (kind != K_CLASS_BODY_DECLARATIONS)
		    && (kind != K_EXPRESSION)
		    && (kind != K_STATEMENTS)) {
	    	throw new IllegalArgumentException();
	    }
		this.astKind = kind;
	}

	/**
	 * Sets the source code to be parsed.
	 *
	 * <p>This source is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 *
	 * <p>If this method is used, the user needs to specify compiler options explicitly using
	 * {@link #setCompilerOptions(Map)} as 1.5 code will not be properly parsed without setting
	 * the appropriate values for the compiler options: {@link JavaCore#COMPILER_SOURCE},
	 * {@link JavaCore#COMPILER_CODEGEN_TARGET_PLATFORM}, and {@link JavaCore#COMPILER_COMPLIANCE}.</p>
	 * <p>Otherwise the default values for the compiler options will be used to parse the given source.</p>
	 *
	 * @param source the source string to be parsed,
	 * or <code>null</code> if none
	 * @see JavaCore#setComplianceOptions(String, Map)
	 */
	public void setSource(char[] source) {
		this.rawSource = source;
		// clear the type root
		this.typeRoot = null;
	}

	/**
	 * Sets the source code to be parsed.
	 * 
	 * <p>This method automatically sets the project (and compiler
	 * options) based on the given compilation unit, in a manner
	 * equivalent to {@link #setProject(IJavaProject) setProject(source.getJavaProject())}.</p>
	 *
	 * <p>This source is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 * 
	 * @param source the Java model compilation unit whose source code
	 * is to be parsed, or <code>null</code> if none
	 */
	public void setSource(ICompilationUnit source) {
		setSource((ITypeRoot)source);
	}

	/**
	 * Sets the source code to be parsed.
	 *
	 * <p>This method automatically sets the project (and compiler
	 * options) based on the given compilation unit, in a manner
	 * equivalent to {@link #setProject(IJavaProject) setProject(source.getJavaProject())}.</p>
	 * <p>If the given class file has  no source attachment, the creation of the
	 * ast will fail with an {@link IllegalStateException}.</p>
	 *
	 * <p>This source is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 * 
	 * @param source the Java model class file whose corresponding source code
	 * is to be parsed, or <code>null</code> if none
	 */
	public void setSource(IClassFile source) {
		setSource((ITypeRoot)source);
	}

	/**
	 * Sets the source code to be parsed.
	 *
	 * <p>This method automatically sets the project (and compiler
	 * options) based on the given compilation unit of class file, in a manner
	 * equivalent to {@link #setProject(IJavaProject) setProject(source.getJavaProject())}.</p>
	 * <p>If the source is a class file without source attachment, the creation of the
	 * ast will fail with an {@link IllegalStateException}.</p>
	 *
	 * <p>This source is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 *
	 * @param source the Java model compilation unit or class file whose corresponding source code
	 * is to be parsed, or <code>null</code> if none
	 * @since 3.3
	 */
	public void setSource(ITypeRoot source) {
		this.typeRoot = source;
		// clear the raw source
		this.rawSource = null;
		if (source != null) {
			this.project = source.getJavaProject();
			Map<String, String> options = this.project.getOptions(true);
			options.remove(JavaCore.COMPILER_TASK_TAGS); // no need to parse task tags
			this.compilerOptions = options;
		}
	}

	/**
     * Sets the subrange of the source code to be parsed.
     * By default, the entire source string will be parsed
     * (<code>offset</code> 0 and <code>length</code> -1).
     *
	 * <p>This range is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
     *
     * @param offset the index of the first character to parse
     * @param length the number of characters to parse, or -1 if
     * the remainder of the source string is to be parsed
     */
	public void setSourceRange(int offset, int length) {
		if (offset < 0 || length < -1) {
			throw new IllegalArgumentException();
		}
		this.sourceOffset = offset;
		this.sourceLength = length;
	}

	/**
	 * Requests that the compiler should perform statements recovery.
	 * When statements recovery is enabled the compiler tries to create statement nodes
	 * from code containing syntax errors
     * <p>
     * Default to <code>false</code>.
     * </p>
	 *
	 * @param enabled <code>true</code> if statements containing syntax errors are wanted,
	 *   and <code>false</code> if these statements aren't wanted.
	 *
	 * @since 3.2
	 */
	public void setStatementsRecovery(boolean enabled) {
		if (enabled) {
			this.bits |= CompilationUnitResolver.STATEMENT_RECOVERY;
		} else {
			this.bits &= ~CompilationUnitResolver.STATEMENT_RECOVERY;
		}
	}
	
	/**
	 * Requests an abstract syntax tree without method bodies. 
	 * 
	 * <p>When ignore method bodies is enabled, all method bodies are discarded.
	 * This has no impact on the binding resolution.</p>
	 *
	 * <p>This setting is not used when the kind used in {@link #setKind(int)} is either 
	 * {@link #K_EXPRESSION} or {@link #K_STATEMENTS}.</p>
	 * @since 3.5.2
	 */
	public void setIgnoreMethodBodies(boolean enabled) {
		if (enabled) {
			this.bits |= CompilationUnitResolver.IGNORE_METHOD_BODIES;
		} else {
			this.bits &= ~CompilationUnitResolver.IGNORE_METHOD_BODIES;
		}
	}

    /**
     * Sets the working copy owner used when resolving bindings, where
     * <code>null</code> means the primary owner. Defaults to the primary owner.
     *
	 * @param owner the owner of working copies that take precedence over underlying
	 *   compilation units, or <code>null</code> if the primary owner should be used
     */
	public void setWorkingCopyOwner(WorkingCopyOwner owner) {
	    if (owner == null) {
			this.workingCopyOwner = DefaultWorkingCopyOwner.PRIMARY;
		} else {
			this.workingCopyOwner = owner;
	 	}
	}

	/**
	 * Sets the name of the compilation unit that would hypothetically contains the
	 * source string.
	 * 
	 *  <p>This is used in conjunction with {@link #setSource(char[])}
	 * and {@link #setProject(IJavaProject)} to locate the compilation unit relative to a Java project.
	 * Defaults to none (<code>null</code>).</p>
	 * <p>
	 * The name of the compilation unit must be supplied for resolving bindings.
	 * This name should be suffixed by a dot ('.') followed by one of the
	 * {@link JavaCore#getJavaLikeExtensions() Java-like extensions}
	 * and match the name of the main (public) class or interface declared in the source.</p>
	 *
	 * <p>
	 * For compilation of a module-info.java file (since Java 9), the name of the compilation unit must be supplied.
	 * Otherwise, module-info.java will be compiled as an ordinary Java file resulting in compilation errors.</p>
	 *
	 * <p>This name must represent the full path of the unit inside the given project. For example, if the source
	 * declares a public class named "Foo" in a project "P" where the source folder is the project itself, the name
	 * of the compilation unit must be "/P/Foo.java".
	 * If the source declares a public class name "Bar" in a package "p1.p2" in a project "P" in a source folder "src",
	 * the name of the compilation unit must be "/P/src/p1/p2/Bar.java".</p>
	 *
	 * <p>This unit name is not used when the AST is built using 
	 * {@link #createASTs(ICompilationUnit[], String[], ASTRequestor, IProgressMonitor)}.</p>
	 *
	 * @param unitName the name of the compilation unit that would contain the source
	 *    string, or <code>null</code> if none
	 */
	public void setUnitName(String unitName) {
		this.unitName = unitName;
	}

	/**
	 * Sets the Java project used when resolving bindings.
	 * 
	 * <p>This method automatically sets the compiler
	 * options based on the given project:</p>
	 * <pre>
	 * setCompilerOptions(project.getOptions(true));
	 * </pre>
	 * <p>See {@link #setCompilerOptions(Map)} for a discussion of
	 * the pros and cons of using these options vs specifying
	 * compiler options explicitly.</p>
	 * <p>This setting is used in conjunction with {@link #setSource(char[])}.
	 * For the purposes of resolving bindings, types declared in the
	 * source string will hide types by the same name available
	 * through the classpath of the given project.</p>
	 * <p>Defaults to none (<code>null</code>).</p>
	 *
	 * @param project the Java project used to resolve names, or
	 *    <code>null</code> if none
	 */
	public void setProject(IJavaProject project) {
		this.project = project;
		if (project != null) {
			Map<String, String> options = project.getOptions(true);
			options.remove(JavaCore.COMPILER_TASK_TAGS); // no need to parse task tags
			this.compilerOptions = options;
		}
	}

	/**
	 * Creates an abstract syntax tree.
	 * <p>
	 * A successful call to this method returns all settings to their
	 * default values so the object is ready to be reused.
	 * </p>
	 * <p>For identifying a module-info.java file as a special file instead of an ordinary 
	 * Java file (Since Java 9), a call to this should be preceded by a call to 
	 * {@link #setUnitName(String)} that sets the unit name as module-info.java</p>
	 *
	 * @param monitor the progress monitor used to report progress and request cancellation,
	 *   or <code>null</code> if none
	 * @return an AST node whose type depends on the kind of parse
	 *  requested, with a fallback to a <code>CompilationUnit</code>
	 *  in the case of severe parsing errors
	 * @exception IllegalStateException if the settings provided
	 * are insufficient, contradictory, or otherwise unsupported
	 */
	public ASTNode createAST(IProgressMonitor monitor) {
		SubMonitor subMonitor = SubMonitor.convert(monitor, 1);
		ASTNode result = null;
		try {
			if (this.rawSource == null && this.typeRoot == null) {
				throw new IllegalStateException("source not specified"); //$NON-NLS-1$
			}
			result = internalCreateAST(subMonitor.split(1));
		} finally {
			// reset to defaults to allow reuse (and avoid leaking)
			initializeDefaults();
		}
		return result;
	}

	/**
	 * Creates ASTs for a batch of compilation units.
	 * <p>When bindings are being resolved, processing a
	 * batch of compilation units is more efficient because much
	 * of the work involved in resolving bindings can be shared.</p>
	 * <p>
	 * When bindings are being resolved, all compilation units must
	 * come from the same Java project, which must be set beforehand
	 * with {@link #setProject(IJavaProject) setProject}.</p>
	 * <p>The compilation units are processed one at a time in no
	 * specified order. For each of the compilation units in turn,</p>
	 * <ul>
	 * <li>{@link #createAST(IProgressMonitor) ASTParser.createAST} is called to parse it
	 * and create a corresponding AST. The calls to
	 * {@link #createAST(IProgressMonitor) ASTParser.createAST} all employ the same settings.</li>
	 * <li>{@link ASTRequestor#acceptAST(ICompilationUnit, CompilationUnit) ASTRequestor.acceptAST}
	 * is called passing the compilation unit and the corresponding AST to <code>requestor</code>.
	 * </li>
	 * </ul>
	 * Note only ASTs from the given compilation units are reported
	 * to the requestor. If additional compilation units are required to
	 * resolve the original ones, the corresponding ASTs are <b>not</b>
	 * reported to the requestor.
	 * </p>
	 * <p>
	 * Note also the following parser parameters are used, regardless of what
	 * may have been specified:
	 * <ul>
	 * <li>The {@linkplain #setKind(int) parser kind} is <code>K_COMPILATION_UNIT</code></li>
	 * <li>The {@linkplain #setSourceRange(int,int) source range} is <code>(0, -1)</code></li>
	 * <li>The {@linkplain #setFocalPosition(int) focal position} is not set</li>
	 * </ul>
	 * </p>
	 * <p>
	 * The <code>bindingKeys</code> parameter specifies bindings keys
	 * ({@link IBinding#getKey()}) that are to be looked up. These keys may
	 * be for elements either inside or outside the set of compilation
	 * units being processed. When bindings are being resolved,
	 * the keys and corresponding bindings (or <code>null</code> if none) are
	 * passed to {@link ASTRequestor#acceptBinding(String, IBinding) ASTRequestor.acceptBinding}.
	 * Note that binding keys for elements outside the set of compilation units being processed
	 * are looked up after all {@link ASTRequestor#acceptAST(ICompilationUnit, CompilationUnit) ASTRequestor.acceptAST}
	 * callbacks have been made.
	 * Binding keys for elements inside the set of compilation units being processed
	 * are looked up and reported right after the corresponding
	 * {@link ASTRequestor#acceptAST(ICompilationUnit, CompilationUnit) ASTRequestor.acceptAST} callback has been made.
	 * No {@link ASTRequestor#acceptBinding(String, IBinding) ASTRequestor.acceptBinding} callbacks are made unless
	 * bindings are being resolved.
	 * </p>
	 * <p>
	 * A successful call to this method returns all settings to their
	 * default values so the object is ready to be reused.
	 * </p>
	 *
	 * @param compilationUnits the compilation units to create ASTs for
	 * @param bindingKeys the binding keys to create bindings for
	 * @param requestor the AST requestor that collects abstract syntax trees and bindings
	 * @param monitor the progress monitor used to report progress and request cancellation,
	 *   or <code>null</code> if none
	 * @exception IllegalStateException if the settings provided
	 * are insufficient, contradictory, or otherwise unsupported
	 * @since 3.1
	 */
	public void createASTs(ICompilationUnit[] compilationUnits, String[] bindingKeys, ASTRequestor requestor, IProgressMonitor monitor) {
		try {
			int flags = 0;
			if ((this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0) {
				flags |= ICompilationUnit.ENABLE_STATEMENTS_RECOVERY;
			}
			if ((this.bits & CompilationUnitResolver.IGNORE_METHOD_BODIES) != 0) {
				flags |= ICompilationUnit.IGNORE_METHOD_BODIES;
			}
			if ((this.bits & CompilationUnitResolver.RESOLVE_BINDING) != 0) {
				if (this.project == null)
					throw new IllegalStateException("project not specified"); //$NON-NLS-1$
				if ((this.bits & CompilationUnitResolver.BINDING_RECOVERY) != 0) {
					flags |= ICompilationUnit.ENABLE_BINDINGS_RECOVERY;
				}
				CompilationUnitResolver.resolve(compilationUnits, bindingKeys, requestor, this.apiLevel, this.compilerOptions, this.project, this.workingCopyOwner, flags, monitor);
			} else {
				CompilationUnitResolver.parse(compilationUnits, requestor, this.apiLevel, this.compilerOptions, flags, monitor);
			}
		} finally {
			// reset to defaults to allow reuse (and avoid leaking)
			initializeDefaults();
		}
	}

	/**
	 * Creates ASTs for a batch of compilation units.
	 * When bindings are being resolved, processing a
	 * batch of compilation units is more efficient because much
	 * of the work involved in resolving bindings can be shared.
	 * <p>
	 * When bindings are being resolved, all compilation units are resolved using
	 * the same environment, which must be set beforehand
	 * with {@link #setEnvironment(String[], String[], String[], boolean) setEnvironment}.
	 * The compilation units are processed one at a time in no
	 * specified order. For each of the compilation units in turn,
	 * <ul>
	 * <li>{@link ASTParser#createAST(IProgressMonitor) ASTParser.createAST} is called to parse it
	 * and create a corresponding AST. The calls to
	 * {@link ASTParser#createAST(IProgressMonitor) ASTParser.createAST} all employ the same settings.</li>
	 * <li>{@link FileASTRequestor#acceptAST(String, CompilationUnit) FileASTRequestor.acceptAST} is called passing
	 * the compilation unit path and the corresponding AST to <code>requestor</code>. The compilation unit path is the same
	 * path that is passed into the given <code>sourceFilePaths</code> parameter.
	 * </li>
	 * </ul>
	 * Note only ASTs from the given compilation units are reported
	 * to the requestor. If additional compilation units are required to
	 * resolve the original ones, the corresponding ASTs are <b>not</b>
	 * reported to the requestor.
	 * </p>
	 * <p>
	 * Note also the following parser parameters are used, regardless of what
	 * may have been specified:
	 * <ul>
	 * <li>The {@linkplain #setKind(int) parser kind} is <code>K_COMPILATION_UNIT</code></li>
	 * <li>The {@linkplain #setSourceRange(int,int) source range} is <code>(0, -1)</code></li>
	 * <li>The {@linkplain #setFocalPosition(int) focal position} is not set</li>
	 * </ul>
	 * </p>
	 * <p>
	 * The <code>bindingKeys</code> parameter specifies bindings keys
	 * ({@link IBinding#getKey()}) that are to be looked up. These keys may
	 * be for elements either inside or outside the set of compilation
	 * units being processed. When bindings are being resolved,
	 * the keys and corresponding bindings (or <code>null</code> if none) are
	 * passed to {@link FileASTRequestor#acceptBinding(String, IBinding) FileASTRequestor.acceptBinding}. Note that binding keys
	 * for elements outside the set of compilation units being processed are looked up
	 * after all {@link FileASTRequestor#acceptAST(String, CompilationUnit) ASTRequestor.acceptAST}
	 * callbacks have been made.
	 * Binding keys for elements inside the set of compilation units being processed
	 * are looked up and reported right after the corresponding
	 * {@link FileASTRequestor#acceptAST(String, CompilationUnit) FileASTRequestor.acceptAST} callback has been made.
	 * No {@link FileASTRequestor#acceptBinding(String, IBinding) FileASTRequestor.acceptBinding} callbacks are made unless
	 * bindings are being resolved.
	 * </p>
	 * <p>
	 * A successful call to this method returns all settings to their
	 * default values so the object is ready to be reused.
	 * </p>
	 * <p>The given <code>encodings</code> are used to properly parse the given source units. If the platform encoding is sufficient,
	 * then the given encodings can be set to <code>null</code>.</p>
	 *
	 * @param sourceFilePaths the compilation units to create ASTs for
	 * @param encodings the given encoding for the source units
	 * @param bindingKeys the binding keys to create bindings for
	 * @param requestor the AST requestor that collects abstract syntax trees and bindings
	 * @param monitor the progress monitor used to report progress and request cancellation,
	 *   or <code>null</code> if none
	 * @exception IllegalStateException if the settings provided
	 * are insufficient, contradictory, or otherwise unsupported
	 * @since 3.6
	 */
	public void createASTs(String[] sourceFilePaths, String[] encodings, String[] bindingKeys,
			FileASTRequestor requestor, IProgressMonitor monitor) {
		try {
			int flags = 0;
			if ((this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0) {
				flags |= ICompilationUnit.ENABLE_STATEMENTS_RECOVERY;
			}
			if ((this.bits & CompilationUnitResolver.IGNORE_METHOD_BODIES) != 0) {
				flags |= ICompilationUnit.IGNORE_METHOD_BODIES;
			}
			if ((this.bits & CompilationUnitResolver.RESOLVE_BINDING) != 0) {
				if (this.classpaths == null && this.sourcepaths == null && ((this.bits & CompilationUnitResolver.INCLUDE_RUNNING_VM_BOOTCLASSPATH) == 0)) {
					throw new IllegalStateException("no environment is specified"); //$NON-NLS-1$
				}
				if ((this.bits & CompilationUnitResolver.BINDING_RECOVERY) != 0) {
					flags |= ICompilationUnit.ENABLE_BINDINGS_RECOVERY;
				}
				CompilationUnitResolver.resolve(sourceFilePaths, encodings, bindingKeys, requestor, this.apiLevel, this.compilerOptions, getClasspath(), flags, monitor);
			} else {
				CompilationUnitResolver.parse(sourceFilePaths, encodings, requestor, this.apiLevel, this.compilerOptions, flags, monitor);
			}
		} finally {
			// reset to defaults to allow reuse (and avoid leaking)
			initializeDefaults();
		}
	}
	/**
	 * Creates bindings for a batch of Java elements.
	 * 
	 * <p>These elements are either
	 * enclosed in {@link ICompilationUnit ICompilationUnits} or in {@link IClassFile IClassFiles}.</p>
	 * <p>
	 * All enclosing compilation units and class files must
	 * come from the same Java project, which must be set beforehand
	 * with {@link #setProject(IJavaProject) setProject}.
	 * </p>
	 * <p>
	 * All elements must exist. If one doesn't exist, an {@link IllegalStateException}
	 * is thrown.
	 * </p>
	 * <p>
	 * The returned array has the same size as the given elements array. At a given position
	 * it contains the binding of the corresponding Java element, or <code>null</code>
	 * if no binding could be created.
	 * </p>
	 * <p>
	 * Note also the following parser parameters are used, regardless of what
	 * may have been specified:
	 * <ul>
	 * <li>The {@linkplain #setResolveBindings(boolean) binding resolution flag} is <code>true</code></li>
	 * <li>The {@linkplain #setKind(int) parser kind} is <code>K_COMPILATION_UNIT</code></li>
	 * <li>The {@linkplain #setSourceRange(int,int) source range} is <code>(0, -1)</code></li>
	 * <li>The {@linkplain #setFocalPosition(int) focal position} is not set</li>
	 * </ul>
	 * </p>
	 * <p>
	 * A successful call to this method returns all settings to their
	 * default values so the object is ready to be reused.
	 * </p>
	 *
	 * @param elements the Java elements to create bindings for
	 * @return the bindings for the given Java elements, possibly containing <code>null</code>s
	 *              if some bindings could not be created
	 * @exception IllegalStateException if the settings provided
	 * are insufficient, contradictory, or otherwise unsupported
	 * @since 3.1
	 */
	public IBinding[] createBindings(IJavaElement[] elements, IProgressMonitor monitor) {
		try {
			if (this.project == null)
				throw new IllegalStateException("project or classpath not specified"); //$NON-NLS-1$
			int flags = 0;
			if ((this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0) {
				flags |= ICompilationUnit.ENABLE_STATEMENTS_RECOVERY;
			}
			if ((this.bits & CompilationUnitResolver.BINDING_RECOVERY) != 0) {
				flags |= ICompilationUnit.ENABLE_BINDINGS_RECOVERY;
			}
			if ((this.bits & CompilationUnitResolver.IGNORE_METHOD_BODIES) != 0) {
				flags |= ICompilationUnit.IGNORE_METHOD_BODIES;
			}
			return CompilationUnitResolver.resolve(elements, this.apiLevel, this.compilerOptions, this.project, this.workingCopyOwner, flags, monitor);
		} finally {
			// reset to defaults to allow reuse (and avoid leaking)
			initializeDefaults();
		}
	}

	private ASTNode internalCreateAST(IProgressMonitor monitor) {
		boolean needToResolveBindings = (this.bits & CompilationUnitResolver.RESOLVE_BINDING) != 0;
		switch(this.astKind) {
			case K_CLASS_BODY_DECLARATIONS :
			case K_EXPRESSION :
			case K_STATEMENTS :
				if (this.rawSource == null) {
					if (this.typeRoot != null) {
						// get the source from the type root
						if (this.typeRoot instanceof ICompilationUnit) {
							org.eclipse.jdt.internal.compiler.env.ICompilationUnit sourceUnit = (org.eclipse.jdt.internal.compiler.env.ICompilationUnit) this.typeRoot;
							this.rawSource = sourceUnit.getContents();
						} else if (this.typeRoot instanceof IClassFile) {
							try {
								String sourceString = this.typeRoot.getSource();
								if (sourceString != null) {
									this.rawSource = sourceString.toCharArray();
								}
							} catch(JavaModelException e) {
								// an error occured accessing the java element
								StringWriter stringWriter = new StringWriter();
								PrintWriter writer = null;
								try {
									writer = new PrintWriter(stringWriter);
									e.printStackTrace(writer);
								} finally {
									if (writer != null) writer.close();
								}
								throw new IllegalStateException(String.valueOf(stringWriter.getBuffer()));
							}
						}
					}
				}
				if (this.rawSource != null) {
					if (this.sourceOffset + this.sourceLength > this.rawSource.length) {
						throw new IllegalStateException();
					}
					return internalCreateASTForKind();
				}
				break;
			case K_COMPILATION_UNIT :
				CompilationUnitDeclaration compilationUnitDeclaration = null;
				try {
					NodeSearcher searcher = null;
					org.eclipse.jdt.internal.compiler.env.ICompilationUnit sourceUnit = null;
					WorkingCopyOwner wcOwner = this.workingCopyOwner;
					if (this.typeRoot instanceof ClassFileWorkingCopy) {
						// special case: class file mimics as compilation unit, but that would use a wrong file name below, so better unwrap now:
						this.typeRoot = ((ClassFileWorkingCopy) this.typeRoot).classFile;
					}
					if (this.typeRoot instanceof ICompilationUnit) {
							/*
							 * this.compilationUnitSource is an instance of org.eclipse.jdt.internal.core.CompilationUnit that implements
							 * both org.eclipse.jdt.core.ICompilationUnit and org.eclipse.jdt.internal.compiler.env.ICompilationUnit
							 */
							sourceUnit = (org.eclipse.jdt.internal.compiler.env.ICompilationUnit) this.typeRoot;
							/*
							 * use a BasicCompilation that caches the source instead of using the compilationUnitSource directly
							 * (if it is a working copy, the source can change between the parse and the AST convertion)
							 * (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=75632)
							 */
							sourceUnit = new BasicCompilationUnit(sourceUnit.getContents(), sourceUnit.getPackageName(), new String(sourceUnit.getFileName()), this.project);
							wcOwner = ((ICompilationUnit) this.typeRoot).getOwner();
					} else if (this.typeRoot instanceof IClassFile) {
						try {
							String sourceString = this.typeRoot.getSource();
							if (sourceString == null) {
								throw new IllegalStateException();
							}
							PackageFragment packageFragment = (PackageFragment) this.typeRoot.getParent();
							BinaryType type = (BinaryType) this.typeRoot.findPrimaryType();
							String fileNameString = null;
							if (type != null) {
								IBinaryType binaryType = (IBinaryType) type.getElementInfo();
								// file name is used to recreate the Java element, so it has to be the toplevel .class file name
								char[] fileName = binaryType.getFileName();

								int firstDollar = CharOperation.indexOf('$', fileName);
								if (firstDollar != -1) {
									char[] suffix = SuffixConstants.SUFFIX_class;
									int suffixLength = suffix.length;
									char[] newFileName = new char[firstDollar + suffixLength];
									System.arraycopy(fileName, 0, newFileName, 0, firstDollar);
									System.arraycopy(suffix, 0, newFileName, firstDollar, suffixLength);
									fileName = newFileName;
								}
								fileNameString = new String(fileName);
							} else {
								// assumed to be "module-info.class" (which has no type):
								fileNameString = this.typeRoot.getElementName();
							}
							sourceUnit = new BasicCompilationUnit(sourceString.toCharArray(), Util.toCharArrays(packageFragment.names), fileNameString, this.typeRoot);
						} catch(JavaModelException e) {
							// an error occured accessing the java element
							StringWriter stringWriter = new StringWriter();
							PrintWriter writer = null;
							try {
								writer = new PrintWriter(stringWriter);
								e.printStackTrace(writer);
							} finally {
								if (writer != null) writer.close();
							}
							throw new IllegalStateException(String.valueOf(stringWriter.getBuffer()));
						}
					} else if (this.rawSource != null) {
						needToResolveBindings = 
							((this.bits & CompilationUnitResolver.RESOLVE_BINDING) != 0)
							&& this.unitName != null
							&& (this.project != null
									|| this.classpaths != null
									|| this.sourcepaths != null
									|| ((this.bits & CompilationUnitResolver.INCLUDE_RUNNING_VM_BOOTCLASSPATH) != 0))
							&& this.compilerOptions != null;
						sourceUnit = new BasicCompilationUnit(this.rawSource, null, this.unitName == null ? "" : this.unitName, this.project); //$NON-NLS-1$
					} else {
						throw new IllegalStateException();
					}
					if ((this.bits & CompilationUnitResolver.PARTIAL) != 0) {
						searcher = new NodeSearcher(this.focalPointPosition);
					}
					int flags = 0;
					if ((this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0) {
						flags |= ICompilationUnit.ENABLE_STATEMENTS_RECOVERY;
					}
					if (searcher == null && ((this.bits & CompilationUnitResolver.IGNORE_METHOD_BODIES) != 0)) {
						flags |= ICompilationUnit.IGNORE_METHOD_BODIES;
					}
					if (needToResolveBindings) {
						if ((this.bits & CompilationUnitResolver.BINDING_RECOVERY) != 0) {
							flags |= ICompilationUnit.ENABLE_BINDINGS_RECOVERY;
						}
						try {
							// parse and resolve
							compilationUnitDeclaration =
								CompilationUnitResolver.resolve(
									sourceUnit,
									this.project,
									getClasspath(),
									searcher,
									this.compilerOptions,
									this.workingCopyOwner,
									flags,
									monitor);
						} catch (JavaModelException e) {
							flags &= ~ICompilationUnit.ENABLE_BINDINGS_RECOVERY;
							compilationUnitDeclaration = CompilationUnitResolver.parse(
									sourceUnit,
									searcher,
									this.compilerOptions,
									flags);
							needToResolveBindings = false;
						}
					} else {
						compilationUnitDeclaration = CompilationUnitResolver.parse(
								sourceUnit,
								searcher,
								this.compilerOptions,
								flags);
						needToResolveBindings = false;
					}
					CompilationUnit result = CompilationUnitResolver.convert(
						compilationUnitDeclaration,
						sourceUnit.getContents(),
						this.apiLevel,
						this.compilerOptions,
						needToResolveBindings,
						wcOwner,
						needToResolveBindings ? new DefaultBindingResolver.BindingTables() : null,
						flags,
						monitor,
						this.project != null);
					result.setTypeRoot(this.typeRoot);
					return result;
				} finally {
					if (compilationUnitDeclaration != null
							&& ((this.bits & CompilationUnitResolver.RESOLVE_BINDING) != 0)) {
						compilationUnitDeclaration.cleanUp();
					}
				}
		}
		throw new IllegalStateException();
	}

	/**
	 * Parses the given source between the bounds specified by the given offset (inclusive)
	 * and the given length and creates and returns a corresponding abstract syntax tree.
	 * <p>
	 * When the parse is successful the result returned includes the ASTs for the
	 * requested source:
	 * <ul>
	 * <li>{@link #K_CLASS_BODY_DECLARATIONS K_CLASS_BODY_DECLARATIONS}: The result node
	 * is a {@link TypeDeclaration TypeDeclaration} whose
	 * {@link TypeDeclaration#bodyDeclarations() bodyDeclarations}
	 * are the new trees. Other aspects of the type declaration are unspecified.</li>
	 * <li>{@link #K_STATEMENTS K_STATEMENTS}: The result node is a
	 * {@link Block Block} whose {@link Block#statements() statements}
	 * are the new trees. Other aspects of the block are unspecified.</li>
	 * <li>{@link #K_EXPRESSION K_EXPRESSION}: The result node is a subclass of
	 * {@link Expression Expression}. Other aspects of the expression are unspecified.</li>
	 * </ul>
	 * The resulting AST node is rooted under an contrived
	 * {@link CompilationUnit CompilationUnit} node, to allow the
	 * client to retrieve the following pieces of information
	 * available there:
	 * <ul>
	 * <li>{@linkplain CompilationUnit#getLineNumber(int) Line number map}. Line
	 * numbers start at 1 and only cover the subrange scanned
	 * (<code>source[offset]</code> through <code>source[offset+length-1]</code>).</li>
	 * <li>{@linkplain CompilationUnit#getMessages() Compiler messages}
	 * and {@linkplain CompilationUnit#getProblems() detailed problem reports}.
	 * Character positions are relative to the start of
	 * <code>source</code>; line positions are for the subrange scanned.</li>
	 * <li>{@linkplain CompilationUnit#getCommentList() Comment list}
	 * for the subrange scanned.</li>
	 * </ul>
	 * The contrived nodes do not have source positions. Other aspects of the
	 * {@link CompilationUnit CompilationUnit} node are unspecified, including
	 * the exact arrangment of intervening nodes.
	 * </p>
	 * <p>
	 * Lexical or syntax errors detected while parsing can result in
	 * a result node being marked as {@link ASTNode#MALFORMED MALFORMED}.
	 * In more severe failure cases where the parser is unable to
	 * recognize the input, this method returns
	 * a {@link CompilationUnit CompilationUnit} node with at least the
	 * compiler messages.
	 * </p>
	 * <p>Each node in the subtree (other than the contrived nodes)
	 * carries source range(s) information relating back
	 * to positions in the given source (the given source itself
	 * is not remembered with the AST).
	 * The source range usually begins at the first character of the first token
	 * corresponding to the node; leading whitespace and comments are <b>not</b>
	 * included. The source range usually extends through the last character of
	 * the last token corresponding to the node; trailing whitespace and
	 * comments are <b>not</b> included. There are a handful of exceptions
	 * (including the various body declarations); the
	 * specification for these node type spells out the details.
	 * Source ranges nest properly: the source range for a child is always
	 * within the source range of its parent, and the source ranges of sibling
	 * nodes never overlap.
	 * </p>
	 * <p>
	 * This method does not compute binding information; all <code>resolveBinding</code>
	 * methods applied to nodes of the resulting AST return <code>null</code>.
	 * </p>
	 *
	 * @return an AST node whose type depends on the kind of parse
	 *  requested, with a fallback to a <code>CompilationUnit</code>
	 *  in the case of severe parsing errors
	 * @see ASTNode#getStartPosition()
	 * @see ASTNode#getLength()
	 */
	private ASTNode internalCreateASTForKind() {
		final ASTConverter converter = new ASTConverter(this.compilerOptions, false, null);
		converter.compilationUnitSource = this.rawSource;
		converter.compilationUnitSourceLength = this.rawSource.length;
		converter.scanner.setSource(this.rawSource);

		AST ast = AST.newAST(this.apiLevel);
		ast.setDefaultNodeFlag(ASTNode.ORIGINAL);
		ast.setBindingResolver(new BindingResolver());
		if ((this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0) {
			ast.setFlag(ICompilationUnit.ENABLE_STATEMENTS_RECOVERY);
		}
		converter.setAST(ast);
		CodeSnippetParsingUtil codeSnippetParsingUtil = new CodeSnippetParsingUtil((this.bits & CompilationUnitResolver.IGNORE_METHOD_BODIES) != 0);
		CompilationUnit compilationUnit = ast.newCompilationUnit();
		if (this.sourceLength == -1) {
			this.sourceLength = this.rawSource.length;
		}
		switch(this.astKind) {
			case K_STATEMENTS :
				ConstructorDeclaration constructorDeclaration = codeSnippetParsingUtil.parseStatements(
						this.rawSource,
						this.sourceOffset,
						this.sourceLength,
						this.compilerOptions,
						true,
						(this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0);
				RecoveryScannerData data = constructorDeclaration.compilationResult.recoveryScannerData;
				if(data != null) {
					Scanner scanner = converter.scanner;
					converter.scanner = new RecoveryScanner(scanner, data.removeUnused());
					converter.docParser.scanner = converter.scanner;
					converter.scanner.setSource(scanner.source);
					
					compilationUnit.setStatementsRecoveryData(data);
				}
				RecordedParsingInformation recordedParsingInformation = codeSnippetParsingUtil.recordedParsingInformation;
				int[][] comments = recordedParsingInformation.commentPositions;
				if (comments != null) {
					converter.buildCommentsTable(compilationUnit, comments);
				}
				compilationUnit.setLineEndTable(recordedParsingInformation.lineEnds);
				Block block = ast.newBlock();
				block.setSourceRange(this.sourceOffset, this.sourceOffset + this.sourceLength);
				ExplicitConstructorCall constructorCall = constructorDeclaration.constructorCall;
				if (constructorCall != null && constructorCall.accessMode != org.eclipse.jdt.internal.compiler.ast.ExplicitConstructorCall.ImplicitSuper) {
					block.statements().add(converter.convert(constructorCall));
				}
				org.eclipse.jdt.internal.compiler.ast.Statement[] statements = constructorDeclaration.statements;
				if (statements != null) {
					int statementsLength = statements.length;
					for (int i = 0; i < statementsLength; i++) {
						if (statements[i] instanceof org.eclipse.jdt.internal.compiler.ast.LocalDeclaration) {
							converter.checkAndAddMultipleLocalDeclaration(statements, i, block.statements());
						} else {
							Statement statement = converter.convert(statements[i]);
							if (statement != null) {
								block.statements().add(statement);
							}
						}
					}
				}
				rootNodeToCompilationUnit(ast, compilationUnit, block, recordedParsingInformation, data);
				ast.setDefaultNodeFlag(0);
				ast.setOriginalModificationCount(ast.modificationCount());
				return block;
			case K_EXPRESSION :
				org.eclipse.jdt.internal.compiler.ast.Expression expression = codeSnippetParsingUtil.parseExpression(this.rawSource, this.sourceOffset, this.sourceLength, this.compilerOptions, true);
				recordedParsingInformation = codeSnippetParsingUtil.recordedParsingInformation;
				comments = recordedParsingInformation.commentPositions;
				if (comments != null) {
					converter.buildCommentsTable(compilationUnit, comments);
				}
				compilationUnit.setLineEndTable(recordedParsingInformation.lineEnds);
				if (expression != null) {
					Expression expression2 = converter.convert(expression);
					rootNodeToCompilationUnit(expression2.getAST(), compilationUnit, expression2, codeSnippetParsingUtil.recordedParsingInformation, null);
					ast.setDefaultNodeFlag(0);
					ast.setOriginalModificationCount(ast.modificationCount());
					return expression2;
				} else {
					CategorizedProblem[] problems = recordedParsingInformation.problems;
					if (problems != null) {
						compilationUnit.setProblems(problems);
					}
					ast.setDefaultNodeFlag(0);
					ast.setOriginalModificationCount(ast.modificationCount());
					return compilationUnit;
				}
			case K_CLASS_BODY_DECLARATIONS :
				final org.eclipse.jdt.internal.compiler.ast.ASTNode[] nodes =
					codeSnippetParsingUtil.parseClassBodyDeclarations(
							this.rawSource,
							this.sourceOffset,
							this.sourceLength,
							this.compilerOptions,
							true,
							(this.bits & CompilationUnitResolver.STATEMENT_RECOVERY) != 0);
				recordedParsingInformation = codeSnippetParsingUtil.recordedParsingInformation;
				comments = recordedParsingInformation.commentPositions;
				if (comments != null) {
					converter.buildCommentsTable(compilationUnit, comments);
				}
				compilationUnit.setLineEndTable(recordedParsingInformation.lineEnds);
				if (nodes != null) {
					// source has no syntax error or the statement recovery is enabled
					TypeDeclaration typeDeclaration = converter.convert(nodes);
					typeDeclaration.setSourceRange(this.sourceOffset, this.sourceOffset + this.sourceLength);
					rootNodeToCompilationUnit(typeDeclaration.getAST(), compilationUnit, typeDeclaration, codeSnippetParsingUtil.recordedParsingInformation, null);
					ast.setDefaultNodeFlag(0);
					ast.setOriginalModificationCount(ast.modificationCount());
					return typeDeclaration;
				} else {
					// source has syntax error and the statement recovery is disabled
					CategorizedProblem[] problems = recordedParsingInformation.problems;
					if (problems != null) {
						compilationUnit.setProblems(problems);
					}
					ast.setDefaultNodeFlag(0);
					ast.setOriginalModificationCount(ast.modificationCount());
					return compilationUnit;
				}
		}
		throw new IllegalStateException();
	}

	private void propagateErrors(ASTNode astNode, CategorizedProblem[] problems, RecoveryScannerData data) {
		astNode.accept(new ASTSyntaxErrorPropagator(problems));
		if (data != null) {
			astNode.accept(new ASTRecoveryPropagator(problems, data));
		}
	}

	private void rootNodeToCompilationUnit(AST ast, CompilationUnit compilationUnit, ASTNode node, RecordedParsingInformation recordedParsingInformation, RecoveryScannerData data) {
		final int problemsCount = recordedParsingInformation.problemsCount;
		switch(node.getNodeType()) {
			case ASTNode.BLOCK :
				{
					Block block = (Block) node;
					if (problemsCount != 0) {
						// propagate and record problems
						final CategorizedProblem[] problems = recordedParsingInformation.problems;
						propagateErrors(block, problems, data);
						compilationUnit.setProblems(problems);
					}
					TypeDeclaration typeDeclaration = ast.newTypeDeclaration();
					Initializer initializer = ast.newInitializer();
					initializer.setBody(block);
					typeDeclaration.bodyDeclarations().add(initializer);
					compilationUnit.types().add(typeDeclaration);
				}
				break;
			case ASTNode.TYPE_DECLARATION :
				{
					TypeDeclaration typeDeclaration = (TypeDeclaration) node;
					if (problemsCount != 0) {
						// propagate and record problems
						final CategorizedProblem[] problems = recordedParsingInformation.problems;
						propagateErrors(typeDeclaration, problems, data);
						compilationUnit.setProblems(problems);
					}
					compilationUnit.types().add(typeDeclaration);
				}
				break;
			default :
				if (node instanceof Expression) {
					Expression expression = (Expression) node;
					if (problemsCount != 0) {
						// propagate and record problems
						final CategorizedProblem[] problems = recordedParsingInformation.problems;
						propagateErrors(expression, problems, data);
						compilationUnit.setProblems(problems);
					}
					ExpressionStatement expressionStatement = ast.newExpressionStatement(expression);
					Block block = ast.newBlock();
					block.statements().add(expressionStatement);
					Initializer initializer = ast.newInitializer();
					initializer.setBody(block);
					TypeDeclaration typeDeclaration = ast.newTypeDeclaration();
					typeDeclaration.bodyDeclarations().add(initializer);
					compilationUnit.types().add(typeDeclaration);
				}
		}
	}
}

Back to the top