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
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
|
/* Separate lexical analyzer for GNU C++.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001 Free Software Foundation, Inc.
Hacked by Michael Tiemann (tiemann@cygnus.com)
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This file is the lexical analyzer for GNU C++. */
#include "config.h"
#include "system.h"
#include "input.h"
#include "tree.h"
#include "cp-tree.h"
#include "cpplib.h"
#include "c-lex.h"
#include "lex.h"
#include "parse.h"
#include "flags.h"
#include "c-pragma.h"
#include "toplev.h"
#include "output.h"
#include "ggc.h"
#include "tm_p.h"
#include "timevar.h"
#include "diagnostic.h"
#ifdef MULTIBYTE_CHARS
#include "mbchar.h"
#include <locale.h>
#endif
extern void yyprint PARAMS ((FILE *, int, YYSTYPE));
static int interface_strcmp PARAMS ((const char *));
static int *init_cpp_parse PARAMS ((void));
static void init_cp_pragma PARAMS ((void));
static tree parse_strconst_pragma PARAMS ((const char *, int));
static void handle_pragma_vtable PARAMS ((cpp_reader *));
static void handle_pragma_unit PARAMS ((cpp_reader *));
static void handle_pragma_interface PARAMS ((cpp_reader *));
static void handle_pragma_implementation PARAMS ((cpp_reader *));
static void handle_pragma_java_exceptions PARAMS ((cpp_reader *));
#ifdef GATHER_STATISTICS
#ifdef REDUCE_LENGTH
static int reduce_cmp PARAMS ((int *, int *));
static int token_cmp PARAMS ((int *, int *));
#endif
#endif
static int is_global PARAMS ((tree));
static void init_operators PARAMS ((void));
static void copy_lang_type PARAMS ((tree));
/* A constraint that can be tested at compile time. */
#ifdef __STDC__
#define CONSTRAINT(name, expr) extern int constraint_##name [(expr) ? 1 : -1]
#else
#define CONSTRAINT(name, expr) extern int constraint_/**/name [(expr) ? 1 : -1]
#endif
#include "cpplib.h"
extern int yychar; /* the lookahead symbol */
extern YYSTYPE yylval; /* the semantic value of the */
/* lookahead symbol */
/* These flags are used by c-lex.c. In C++, they're always off and on,
respectively. */
int warn_traditional = 0;
int flag_digraphs = 1;
/* the declaration found for the last IDENTIFIER token read in.
yylex must look this up to detect typedefs, which get token type TYPENAME,
so it is left around in case the identifier is not a typedef but is
used in a context which makes it a reference to a variable. */
tree lastiddecl;
/* Array for holding counts of the numbers of tokens seen. */
extern int *token_count;
/* Functions and data structures for #pragma interface.
`#pragma implementation' means that the main file being compiled
is considered to implement (provide) the classes that appear in
its main body. I.e., if this is file "foo.cc", and class `bar'
is defined in "foo.cc", then we say that "foo.cc implements bar".
All main input files "implement" themselves automagically.
`#pragma interface' means that unless this file (of the form "foo.h"
is not presently being included by file "foo.cc", the
CLASSTYPE_INTERFACE_ONLY bit gets set. The effect is that none
of the vtables nor any of the inline functions defined in foo.h
will ever be output.
There are cases when we want to link files such as "defs.h" and
"main.cc". In this case, we give "defs.h" a `#pragma interface',
and "main.cc" has `#pragma implementation "defs.h"'. */
struct impl_files
{
const char *filename;
struct impl_files *next;
};
static struct impl_files *impl_file_chain;
/* Return something to represent absolute declarators containing a *.
TARGET is the absolute declarator that the * contains.
CV_QUALIFIERS is a list of modifiers such as const or volatile
to apply to the pointer type, represented as identifiers.
We return an INDIRECT_REF whose "contents" are TARGET
and whose type is the modifier list. */
tree
make_pointer_declarator (cv_qualifiers, target)
tree cv_qualifiers, target;
{
if (target && TREE_CODE (target) == IDENTIFIER_NODE
&& ANON_AGGRNAME_P (target))
error ("type name expected before `*'");
target = build_nt (INDIRECT_REF, target);
TREE_TYPE (target) = cv_qualifiers;
return target;
}
/* Return something to represent absolute declarators containing a &.
TARGET is the absolute declarator that the & contains.
CV_QUALIFIERS is a list of modifiers such as const or volatile
to apply to the reference type, represented as identifiers.
We return an ADDR_EXPR whose "contents" are TARGET
and whose type is the modifier list. */
tree
make_reference_declarator (cv_qualifiers, target)
tree cv_qualifiers, target;
{
if (target)
{
if (TREE_CODE (target) == ADDR_EXPR)
{
error ("cannot declare references to references");
return target;
}
if (TREE_CODE (target) == INDIRECT_REF)
{
error ("cannot declare pointers to references");
return target;
}
if (TREE_CODE (target) == IDENTIFIER_NODE && ANON_AGGRNAME_P (target))
error ("type name expected before `&'");
}
target = build_nt (ADDR_EXPR, target);
TREE_TYPE (target) = cv_qualifiers;
return target;
}
tree
make_call_declarator (target, parms, cv_qualifiers, exception_specification)
tree target, parms, cv_qualifiers, exception_specification;
{
target = build_nt (CALL_EXPR, target,
tree_cons (parms, cv_qualifiers, NULL_TREE),
/* The third operand is really RTL. We
shouldn't put anything there. */
NULL_TREE);
CALL_DECLARATOR_EXCEPTION_SPEC (target) = exception_specification;
return target;
}
void
set_quals_and_spec (call_declarator, cv_qualifiers, exception_specification)
tree call_declarator, cv_qualifiers, exception_specification;
{
CALL_DECLARATOR_QUALS (call_declarator) = cv_qualifiers;
CALL_DECLARATOR_EXCEPTION_SPEC (call_declarator) = exception_specification;
}
int interface_only; /* whether or not current file is only for
interface definitions. */
int interface_unknown; /* whether or not we know this class
to behave according to #pragma interface. */
/* Post-switch processing. */
void
cxx_post_options ()
{
c_common_post_options ();
}
/* Initialization before switch parsing. */
void
cxx_init_options ()
{
c_common_init_options (clk_cplusplus);
/* Default exceptions on. */
flag_exceptions = 1;
/* By default wrap lines at 80 characters. Is getenv ("COLUMNS")
preferable? */
diagnostic_line_cutoff (global_dc) = 80;
/* By default, emit location information once for every
diagnostic message. */
diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
}
void
cxx_finish ()
{
c_common_finish ();
}
static int *
init_cpp_parse ()
{
#ifdef GATHER_STATISTICS
#ifdef REDUCE_LENGTH
reduce_count = (int *) xcalloc (sizeof (int), (REDUCE_LENGTH + 1));
reduce_count += 1;
token_count = (int *) xcalloc (sizeof (int), (TOKEN_LENGTH + 1));
token_count += 1;
#endif
#endif
return token_count;
}
/* A mapping from tree codes to operator name information. */
operator_name_info_t operator_name_info[(int) LAST_CPLUS_TREE_CODE];
/* Similar, but for assignment operators. */
operator_name_info_t assignment_operator_name_info[(int) LAST_CPLUS_TREE_CODE];
/* Initialize data structures that keep track of operator names. */
#define DEF_OPERATOR(NAME, C, M, AR, AP) \
CONSTRAINT (C, sizeof "operator " + sizeof NAME <= 256);
#include "operators.def"
#undef DEF_OPERATOR
static void
init_operators ()
{
tree identifier;
char buffer[256];
struct operator_name_info_t *oni;
#define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
sprintf (buffer, ISALPHA (NAME[0]) ? "operator %s" : "operator%s", NAME); \
identifier = get_identifier (buffer); \
IDENTIFIER_OPNAME_P (identifier) = 1; \
\
oni = (ASSN_P \
? &assignment_operator_name_info[(int) CODE] \
: &operator_name_info[(int) CODE]); \
oni->identifier = identifier; \
oni->name = NAME; \
oni->mangled_name = MANGLING;
#include "operators.def"
#undef DEF_OPERATOR
operator_name_info[(int) ERROR_MARK].identifier
= get_identifier ("<invalid operator>");
/* Handle some special cases. These operators are not defined in
the language, but can be produced internally. We may need them
for error-reporting. (Eventually, we should ensure that this
does not happen. Error messages involving these operators will
be confusing to users.) */
operator_name_info [(int) INIT_EXPR].name
= operator_name_info [(int) MODIFY_EXPR].name;
operator_name_info [(int) EXACT_DIV_EXPR].name = "(ceiling /)";
operator_name_info [(int) CEIL_DIV_EXPR].name = "(ceiling /)";
operator_name_info [(int) FLOOR_DIV_EXPR].name = "(floor /)";
operator_name_info [(int) ROUND_DIV_EXPR].name = "(round /)";
operator_name_info [(int) CEIL_MOD_EXPR].name = "(ceiling %)";
operator_name_info [(int) FLOOR_MOD_EXPR].name = "(floor %)";
operator_name_info [(int) ROUND_MOD_EXPR].name = "(round %)";
operator_name_info [(int) ABS_EXPR].name = "abs";
operator_name_info [(int) FFS_EXPR].name = "ffs";
operator_name_info [(int) BIT_ANDTC_EXPR].name = "&~";
operator_name_info [(int) TRUTH_AND_EXPR].name = "strict &&";
operator_name_info [(int) TRUTH_OR_EXPR].name = "strict ||";
operator_name_info [(int) IN_EXPR].name = "in";
operator_name_info [(int) RANGE_EXPR].name = "...";
operator_name_info [(int) CONVERT_EXPR].name = "+";
assignment_operator_name_info [(int) EXACT_DIV_EXPR].name
= "(exact /=)";
assignment_operator_name_info [(int) CEIL_DIV_EXPR].name
= "(ceiling /=)";
assignment_operator_name_info [(int) FLOOR_DIV_EXPR].name
= "(floor /=)";
assignment_operator_name_info [(int) ROUND_DIV_EXPR].name
= "(round /=)";
assignment_operator_name_info [(int) CEIL_MOD_EXPR].name
= "(ceiling %=)";
assignment_operator_name_info [(int) FLOOR_MOD_EXPR].name
= "(floor %=)";
assignment_operator_name_info [(int) ROUND_MOD_EXPR].name
= "(round %=)";
}
/* The reserved keyword table. */
struct resword
{
const char *const word;
const ENUM_BITFIELD(rid) rid : 16;
const unsigned int disable : 16;
};
/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
_true_. */
#define D_EXT 0x01 /* GCC extension */
#define D_ASM 0x02 /* in C99, but has a switch to turn it off */
#define D_OPNAME 0x04 /* operator names */
CONSTRAINT(ridbits_fit, RID_LAST_MODIFIER < sizeof(unsigned long) * CHAR_BIT);
static const struct resword reswords[] =
{
{ "_Complex", RID_COMPLEX, 0 },
{ "__FUNCTION__", RID_FUNCTION_NAME, 0 },
{ "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
{ "__alignof", RID_ALIGNOF, 0 },
{ "__alignof__", RID_ALIGNOF, 0 },
{ "__asm", RID_ASM, 0 },
{ "__asm__", RID_ASM, 0 },
{ "__attribute", RID_ATTRIBUTE, 0 },
{ "__attribute__", RID_ATTRIBUTE, 0 },
{ "__builtin_va_arg", RID_VA_ARG, 0 },
{ "__complex", RID_COMPLEX, 0 },
{ "__complex__", RID_COMPLEX, 0 },
{ "__const", RID_CONST, 0 },
{ "__const__", RID_CONST, 0 },
{ "__extension__", RID_EXTENSION, 0 },
{ "__func__", RID_C99_FUNCTION_NAME, 0 },
{ "__imag", RID_IMAGPART, 0 },
{ "__imag__", RID_IMAGPART, 0 },
{ "__inline", RID_INLINE, 0 },
{ "__inline__", RID_INLINE, 0 },
{ "__label__", RID_LABEL, 0 },
{ "__null", RID_NULL, 0 },
{ "__real", RID_REALPART, 0 },
{ "__real__", RID_REALPART, 0 },
{ "__restrict", RID_RESTRICT, 0 },
{ "__restrict__", RID_RESTRICT, 0 },
{ "__signed", RID_SIGNED, 0 },
{ "__signed__", RID_SIGNED, 0 },
{ "__typeof", RID_TYPEOF, 0 },
{ "__typeof__", RID_TYPEOF, 0 },
{ "__volatile", RID_VOLATILE, 0 },
{ "__volatile__", RID_VOLATILE, 0 },
{ "asm", RID_ASM, D_ASM },
{ "and", RID_AND, D_OPNAME },
{ "and_eq", RID_AND_EQ, D_OPNAME },
{ "auto", RID_AUTO, 0 },
{ "bitand", RID_BITAND, D_OPNAME },
{ "bitor", RID_BITOR, D_OPNAME },
{ "bool", RID_BOOL, 0 },
{ "break", RID_BREAK, 0 },
{ "case", RID_CASE, 0 },
{ "catch", RID_CATCH, 0 },
{ "char", RID_CHAR, 0 },
{ "class", RID_CLASS, 0 },
{ "compl", RID_COMPL, D_OPNAME },
{ "const", RID_CONST, 0 },
{ "const_cast", RID_CONSTCAST, 0 },
{ "continue", RID_CONTINUE, 0 },
{ "default", RID_DEFAULT, 0 },
{ "delete", RID_DELETE, 0 },
{ "do", RID_DO, 0 },
{ "double", RID_DOUBLE, 0 },
{ "dynamic_cast", RID_DYNCAST, 0 },
{ "else", RID_ELSE, 0 },
{ "enum", RID_ENUM, 0 },
{ "explicit", RID_EXPLICIT, 0 },
{ "export", RID_EXPORT, 0 },
{ "extern", RID_EXTERN, 0 },
{ "false", RID_FALSE, 0 },
{ "float", RID_FLOAT, 0 },
{ "for", RID_FOR, 0 },
{ "friend", RID_FRIEND, 0 },
{ "goto", RID_GOTO, 0 },
{ "if", RID_IF, 0 },
{ "inline", RID_INLINE, 0 },
{ "int", RID_INT, 0 },
{ "long", RID_LONG, 0 },
{ "mutable", RID_MUTABLE, 0 },
{ "namespace", RID_NAMESPACE, 0 },
{ "new", RID_NEW, 0 },
{ "not", RID_NOT, D_OPNAME },
{ "not_eq", RID_NOT_EQ, D_OPNAME },
{ "operator", RID_OPERATOR, 0 },
{ "or", RID_OR, D_OPNAME },
{ "or_eq", RID_OR_EQ, D_OPNAME },
{ "private", RID_PRIVATE, 0 },
{ "protected", RID_PROTECTED, 0 },
{ "public", RID_PUBLIC, 0 },
{ "register", RID_REGISTER, 0 },
{ "reinterpret_cast", RID_REINTCAST, 0 },
{ "return", RID_RETURN, 0 },
{ "short", RID_SHORT, 0 },
{ "signed", RID_SIGNED, 0 },
{ "sizeof", RID_SIZEOF, 0 },
{ "static", RID_STATIC, 0 },
{ "static_cast", RID_STATCAST, 0 },
{ "struct", RID_STRUCT, 0 },
{ "switch", RID_SWITCH, 0 },
{ "template", RID_TEMPLATE, 0 },
{ "this", RID_THIS, 0 },
{ "throw", RID_THROW, 0 },
{ "true", RID_TRUE, 0 },
{ "try", RID_TRY, 0 },
{ "typedef", RID_TYPEDEF, 0 },
{ "typename", RID_TYPENAME, 0 },
{ "typeid", RID_TYPEID, 0 },
{ "typeof", RID_TYPEOF, D_ASM|D_EXT },
{ "union", RID_UNION, 0 },
{ "unsigned", RID_UNSIGNED, 0 },
{ "using", RID_USING, 0 },
{ "virtual", RID_VIRTUAL, 0 },
{ "void", RID_VOID, 0 },
{ "volatile", RID_VOLATILE, 0 },
{ "wchar_t", RID_WCHAR, 0 },
{ "while", RID_WHILE, 0 },
{ "xor", RID_XOR, D_OPNAME },
{ "xor_eq", RID_XOR_EQ, D_OPNAME },
};
/* Table mapping from RID_* constants to yacc token numbers.
Unfortunately we have to have entries for all the keywords in all
three languages. */
const short rid_to_yy[RID_MAX] =
{
/* RID_STATIC */ SCSPEC,
/* RID_UNSIGNED */ TYPESPEC,
/* RID_LONG */ TYPESPEC,
/* RID_CONST */ CV_QUALIFIER,
/* RID_EXTERN */ SCSPEC,
/* RID_REGISTER */ SCSPEC,
/* RID_TYPEDEF */ SCSPEC,
/* RID_SHORT */ TYPESPEC,
/* RID_INLINE */ SCSPEC,
/* RID_VOLATILE */ CV_QUALIFIER,
/* RID_SIGNED */ TYPESPEC,
/* RID_AUTO */ SCSPEC,
/* RID_RESTRICT */ CV_QUALIFIER,
/* C extensions. Bounded pointers are not yet in C++ */
/* RID_BOUNDED */ 0,
/* RID_UNBOUNDED */ 0,
/* RID_COMPLEX */ TYPESPEC,
/* C++ */
/* RID_FRIEND */ SCSPEC,
/* RID_VIRTUAL */ SCSPEC,
/* RID_EXPLICIT */ SCSPEC,
/* RID_EXPORT */ EXPORT,
/* RID_MUTABLE */ SCSPEC,
/* ObjC */
/* RID_IN */ 0,
/* RID_OUT */ 0,
/* RID_INOUT */ 0,
/* RID_BYCOPY */ 0,
/* RID_BYREF */ 0,
/* RID_ONEWAY */ 0,
/* C */
/* RID_INT */ TYPESPEC,
/* RID_CHAR */ TYPESPEC,
/* RID_FLOAT */ TYPESPEC,
/* RID_DOUBLE */ TYPESPEC,
/* RID_VOID */ TYPESPEC,
/* RID_ENUM */ ENUM,
/* RID_STRUCT */ AGGR,
/* RID_UNION */ AGGR,
/* RID_IF */ IF,
/* RID_ELSE */ ELSE,
/* RID_WHILE */ WHILE,
/* RID_DO */ DO,
/* RID_FOR */ FOR,
/* RID_SWITCH */ SWITCH,
/* RID_CASE */ CASE,
/* RID_DEFAULT */ DEFAULT,
/* RID_BREAK */ BREAK,
/* RID_CONTINUE */ CONTINUE,
/* RID_RETURN */ RETURN_KEYWORD,
/* RID_GOTO */ GOTO,
/* RID_SIZEOF */ SIZEOF,
/* C extensions */
/* RID_ASM */ ASM_KEYWORD,
/* RID_TYPEOF */ TYPEOF,
/* RID_ALIGNOF */ ALIGNOF,
/* RID_ATTRIBUTE */ ATTRIBUTE,
/* RID_VA_ARG */ VA_ARG,
/* RID_EXTENSION */ EXTENSION,
/* RID_IMAGPART */ IMAGPART,
/* RID_REALPART */ REALPART,
/* RID_LABEL */ LABEL,
/* RID_PTRBASE */ 0,
/* RID_PTREXTENT */ 0,
/* RID_PTRVALUE */ 0,
/* RID_CHOOSE_EXPR */ 0,
/* RID_TYPES_COMPATIBLE_P */ 0,
/* RID_FUNCTION_NAME */ VAR_FUNC_NAME,
/* RID_PRETTY_FUNCTION_NAME */ VAR_FUNC_NAME,
/* RID_c99_FUNCTION_NAME */ VAR_FUNC_NAME,
/* C++ */
/* RID_BOOL */ TYPESPEC,
/* RID_WCHAR */ TYPESPEC,
/* RID_CLASS */ AGGR,
/* RID_PUBLIC */ VISSPEC,
/* RID_PRIVATE */ VISSPEC,
/* RID_PROTECTED */ VISSPEC,
/* RID_TEMPLATE */ TEMPLATE,
/* RID_NULL */ CONSTANT,
/* RID_CATCH */ CATCH,
/* RID_DELETE */ DELETE,
/* RID_FALSE */ CXX_FALSE,
/* RID_NAMESPACE */ NAMESPACE,
/* RID_NEW */ NEW,
/* RID_OPERATOR */ OPERATOR,
/* RID_THIS */ THIS,
/* RID_THROW */ THROW,
/* RID_TRUE */ CXX_TRUE,
/* RID_TRY */ TRY,
/* RID_TYPENAME */ TYPENAME_KEYWORD,
/* RID_TYPEID */ TYPEID,
/* RID_USING */ USING,
/* casts */
/* RID_CONSTCAST */ CONST_CAST,
/* RID_DYNCAST */ DYNAMIC_CAST,
/* RID_REINTCAST */ REINTERPRET_CAST,
/* RID_STATCAST */ STATIC_CAST,
/* alternate spellings */
/* RID_AND */ ANDAND,
/* RID_AND_EQ */ ASSIGN,
/* RID_NOT */ '!',
/* RID_NOT_EQ */ EQCOMPARE,
/* RID_OR */ OROR,
/* RID_OR_EQ */ ASSIGN,
/* RID_XOR */ '^',
/* RID_XOR_EQ */ ASSIGN,
/* RID_BITAND */ '&',
/* RID_BITOR */ '|',
/* RID_COMPL */ '~',
/* Objective C */
/* RID_ID */ 0,
/* RID_AT_ENCODE */ 0,
/* RID_AT_END */ 0,
/* RID_AT_CLASS */ 0,
/* RID_AT_ALIAS */ 0,
/* RID_AT_DEFS */ 0,
/* RID_AT_PRIVATE */ 0,
/* RID_AT_PROTECTED */ 0,
/* RID_AT_PUBLIC */ 0,
/* RID_AT_PROTOCOL */ 0,
/* RID_AT_SELECTOR */ 0,
/* RID_AT_INTERFACE */ 0,
/* RID_AT_IMPLEMENTATION */ 0
};
void
init_reswords ()
{
unsigned int i;
tree id;
int mask = ((flag_operator_names ? 0 : D_OPNAME)
| (flag_no_asm ? D_ASM : 0)
| (flag_no_gnu_keywords ? D_EXT : 0));
/* It is not necessary to register ridpointers as a GC root, because
all the trees it points to are permanently interned in the
get_identifier hash anyway. */
ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
for (i = 0; i < ARRAY_SIZE (reswords); i++)
{
id = get_identifier (reswords[i].word);
C_RID_CODE (id) = reswords[i].rid;
ridpointers [(int) reswords[i].rid] = id;
if (! (reswords[i].disable & mask))
C_IS_RESERVED_WORD (id) = 1;
}
}
static void
init_cp_pragma ()
{
cpp_register_pragma (parse_in, 0, "vtable", handle_pragma_vtable);
cpp_register_pragma (parse_in, 0, "unit", handle_pragma_unit);
cpp_register_pragma (parse_in, 0, "interface", handle_pragma_interface);
cpp_register_pragma (parse_in, 0, "implementation",
handle_pragma_implementation);
cpp_register_pragma (parse_in, "GCC", "interface", handle_pragma_interface);
cpp_register_pragma (parse_in, "GCC", "implementation",
handle_pragma_implementation);
cpp_register_pragma (parse_in, "GCC", "java_exceptions",
handle_pragma_java_exceptions);
}
/* Initialize the C++ front end. This function is very sensitive to
the exact order that things are done here. It would be nice if the
initialization done by this routine were moved to its subroutines,
and the ordering dependencies clarified and reduced. */
const char *
cxx_init (filename)
const char *filename;
{
input_filename = "<internal>";
init_reswords ();
init_spew ();
init_tree ();
init_cp_semantics ();
init_operators ();
init_method ();
init_error ();
current_function_decl = NULL;
class_type_node = build_int_2 (class_type, 0);
TREE_TYPE (class_type_node) = class_type_node;
ridpointers[(int) RID_CLASS] = class_type_node;
record_type_node = build_int_2 (record_type, 0);
TREE_TYPE (record_type_node) = record_type_node;
ridpointers[(int) RID_STRUCT] = record_type_node;
union_type_node = build_int_2 (union_type, 0);
TREE_TYPE (union_type_node) = union_type_node;
ridpointers[(int) RID_UNION] = union_type_node;
enum_type_node = build_int_2 (enum_type, 0);
TREE_TYPE (enum_type_node) = enum_type_node;
ridpointers[(int) RID_ENUM] = enum_type_node;
cxx_init_decl_processing ();
/* Create the built-in __null node. */
null_node = build_int_2 (0, 0);
TREE_TYPE (null_node) = c_common_type_for_size (POINTER_SIZE, 0);
ridpointers[RID_NULL] = null_node;
token_count = init_cpp_parse ();
interface_unknown = 1;
filename = c_common_init (filename);
if (filename == NULL)
return NULL;
init_cp_pragma ();
init_repo (filename);
return filename;
}
inline void
yyprint (file, yychar, yylval)
FILE *file;
int yychar;
YYSTYPE yylval;
{
tree t;
switch (yychar)
{
case IDENTIFIER:
case TYPENAME:
case TYPESPEC:
case PTYPENAME:
case PFUNCNAME:
case IDENTIFIER_DEFN:
case TYPENAME_DEFN:
case PTYPENAME_DEFN:
case SCSPEC:
case PRE_PARSED_CLASS_DECL:
t = yylval.ttype;
if (TREE_CODE (t) == TYPE_DECL || TREE_CODE (t) == TEMPLATE_DECL)
{
fprintf (file, " `%s'", IDENTIFIER_POINTER (DECL_NAME (t)));
break;
}
my_friendly_assert (TREE_CODE (t) == IDENTIFIER_NODE, 224);
if (IDENTIFIER_POINTER (t))
fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
break;
case AGGR:
if (yylval.ttype == class_type_node)
fprintf (file, " `class'");
else if (yylval.ttype == record_type_node)
fprintf (file, " `struct'");
else if (yylval.ttype == union_type_node)
fprintf (file, " `union'");
else if (yylval.ttype == enum_type_node)
fprintf (file, " `enum'");
else
abort ();
break;
case CONSTANT:
t = yylval.ttype;
if (TREE_CODE (t) == INTEGER_CST)
fprintf (file,
#if HOST_BITS_PER_WIDE_INT == 64
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
" 0x%x%016x",
#else
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
" 0x%lx%016lx",
#else
" 0x%llx%016llx",
#endif
#endif
#else
#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
" 0x%lx%08lx",
#else
" 0x%x%08x",
#endif
#endif
TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
break;
}
}
#if defined(GATHER_STATISTICS) && defined(REDUCE_LENGTH)
static int *reduce_count;
#endif
int *token_count;
#if 0
#define REDUCE_LENGTH ARRAY_SIZE (yyr2)
#define TOKEN_LENGTH (256 + ARRAY_SIZE (yytname))
#endif
#ifdef GATHER_STATISTICS
#ifdef REDUCE_LENGTH
void
yyhook (yyn)
int yyn;
{
reduce_count[yyn] += 1;
}
static int
reduce_cmp (p, q)
int *p, *q;
{
return reduce_count[*q] - reduce_count[*p];
}
static int
token_cmp (p, q)
int *p, *q;
{
return token_count[*q] - token_count[*p];
}
#endif
#endif
void
print_parse_statistics ()
{
#ifdef GATHER_STATISTICS
#ifdef REDUCE_LENGTH
#if YYDEBUG != 0
int i;
int maxlen = REDUCE_LENGTH;
unsigned *sorted;
if (reduce_count[-1] == 0)
return;
if (TOKEN_LENGTH > REDUCE_LENGTH)
maxlen = TOKEN_LENGTH;
sorted = (unsigned *) alloca (sizeof (int) * maxlen);
for (i = 0; i < TOKEN_LENGTH; i++)
sorted[i] = i;
qsort (sorted, TOKEN_LENGTH, sizeof (int), token_cmp);
for (i = 0; i < TOKEN_LENGTH; i++)
{
int idx = sorted[i];
if (token_count[idx] == 0)
break;
if (token_count[idx] < token_count[-1])
break;
fprintf (stderr, "token %d, `%s', count = %d\n",
idx, yytname[YYTRANSLATE (idx)], token_count[idx]);
}
fprintf (stderr, "\n");
for (i = 0; i < REDUCE_LENGTH; i++)
sorted[i] = i;
qsort (sorted, REDUCE_LENGTH, sizeof (int), reduce_cmp);
for (i = 0; i < REDUCE_LENGTH; i++)
{
int idx = sorted[i];
if (reduce_count[idx] == 0)
break;
if (reduce_count[idx] < reduce_count[-1])
break;
fprintf (stderr, "rule %d, line %d, count = %d\n",
idx, yyrline[idx], reduce_count[idx]);
}
fprintf (stderr, "\n");
#endif
#endif
#endif
}
/* Helper function to load global variables with interface
information. */
void
extract_interface_info ()
{
struct c_fileinfo *finfo = 0;
if (flag_alt_external_templates)
{
tree til = tinst_for_decl ();
if (til)
finfo = get_fileinfo (TINST_FILE (til));
}
if (!finfo)
finfo = get_fileinfo (input_filename);
interface_only = finfo->interface_only;
interface_unknown = finfo->interface_unknown;
}
/* Return nonzero if S is not considered part of an
INTERFACE/IMPLEMENTATION pair. Otherwise, return 0. */
static int
interface_strcmp (s)
const char *s;
{
/* Set the interface/implementation bits for this scope. */
struct impl_files *ifiles;
const char *s1;
for (ifiles = impl_file_chain; ifiles; ifiles = ifiles->next)
{
const char *t1 = ifiles->filename;
s1 = s;
if (*s1 != *t1 || *s1 == 0)
continue;
while (*s1 == *t1 && *s1 != 0)
s1++, t1++;
/* A match. */
if (*s1 == *t1)
return 0;
/* Don't get faked out by xxx.yyy.cc vs xxx.zzz.cc. */
if (strchr (s1, '.') || strchr (t1, '.'))
continue;
if (*s1 == '\0' || s1[-1] != '.' || t1[-1] != '.')
continue;
/* A match. */
return 0;
}
/* No matches. */
return 1;
}
/* Heuristic to tell whether the user is missing a semicolon
after a struct or enum declaration. Emit an error message
if we know the user has blown it. */
void
check_for_missing_semicolon (type)
tree type;
{
if (yychar < 0)
yychar = yylex ();
if ((yychar > 255
&& yychar != SCSPEC
&& yychar != IDENTIFIER
&& yychar != TYPENAME
&& yychar != CV_QUALIFIER
&& yychar != SELFNAME)
|| yychar == 0 /* EOF */)
{
if (TYPE_ANONYMOUS_P (type))
error ("semicolon missing after %s declaration",
TREE_CODE (type) == ENUMERAL_TYPE ? "enum" : "struct");
else
error ("semicolon missing after declaration of `%T'", type);
shadow_tag (build_tree_list (0, type));
}
/* Could probably also hack cases where class { ... } f (); appears. */
clear_anon_tags ();
}
void
note_got_semicolon (type)
tree type;
{
if (!TYPE_P (type))
abort ();
if (CLASS_TYPE_P (type))
CLASSTYPE_GOT_SEMICOLON (type) = 1;
}
void
note_list_got_semicolon (declspecs)
tree declspecs;
{
tree link;
for (link = declspecs; link; link = TREE_CHAIN (link))
{
tree type = TREE_VALUE (link);
if (type && TYPE_P (type))
note_got_semicolon (type);
}
clear_anon_tags ();
}
/* Parse a #pragma whose sole argument is a string constant.
If OPT is true, the argument is optional. */
static tree
parse_strconst_pragma (name, opt)
const char *name;
int opt;
{
tree result, x;
enum cpp_ttype t;
t = c_lex (&x);
if (t == CPP_STRING)
{
result = x;
if (c_lex (&x) != CPP_EOF)
warning ("junk at end of #pragma %s", name);
return result;
}
if (t == CPP_EOF && opt)
return 0;
error ("invalid #pragma %s", name);
return (tree)-1;
}
static void
handle_pragma_vtable (dfile)
cpp_reader *dfile ATTRIBUTE_UNUSED;
{
parse_strconst_pragma ("vtable", 0);
sorry ("#pragma vtable no longer supported");
}
static void
handle_pragma_unit (dfile)
cpp_reader *dfile ATTRIBUTE_UNUSED;
{
/* Validate syntax, but don't do anything. */
parse_strconst_pragma ("unit", 0);
}
static void
handle_pragma_interface (dfile)
cpp_reader *dfile ATTRIBUTE_UNUSED;
{
tree fname = parse_strconst_pragma ("interface", 1);
struct c_fileinfo *finfo;
const char *main_filename;
if (fname == (tree)-1)
return;
else if (fname == 0)
main_filename = lbasename (input_filename);
else
main_filename = TREE_STRING_POINTER (fname);
finfo = get_fileinfo (input_filename);
if (impl_file_chain == 0)
{
/* If this is zero at this point, then we are
auto-implementing. */
if (main_input_filename == 0)
main_input_filename = input_filename;
}
interface_only = interface_strcmp (main_filename);
#ifdef MULTIPLE_SYMBOL_SPACES
if (! interface_only)
#endif
interface_unknown = 0;
finfo->interface_only = interface_only;
finfo->interface_unknown = interface_unknown;
}
/* Note that we have seen a #pragma implementation for the key MAIN_FILENAME.
We used to only allow this at toplevel, but that restriction was buggy
in older compilers and it seems reasonable to allow it in the headers
themselves, too. It only needs to precede the matching #p interface.
We don't touch interface_only or interface_unknown; the user must specify
a matching #p interface for this to have any effect. */
static void
handle_pragma_implementation (dfile)
cpp_reader *dfile ATTRIBUTE_UNUSED;
{
tree fname = parse_strconst_pragma ("implementation", 1);
const char *main_filename;
struct impl_files *ifiles = impl_file_chain;
if (fname == (tree)-1)
return;
if (fname == 0)
{
if (main_input_filename)
main_filename = main_input_filename;
else
main_filename = input_filename;
main_filename = lbasename (main_filename);
}
else
{
main_filename = TREE_STRING_POINTER (fname);
if (cpp_included (parse_in, main_filename))
warning ("#pragma implementation for %s appears after file is included",
main_filename);
}
for (; ifiles; ifiles = ifiles->next)
{
if (! strcmp (ifiles->filename, main_filename))
break;
}
if (ifiles == 0)
{
ifiles = (struct impl_files*) xmalloc (sizeof (struct impl_files));
ifiles->filename = main_filename;
ifiles->next = impl_file_chain;
impl_file_chain = ifiles;
}
}
/* Indicate that this file uses Java-personality exception handling. */
static void
handle_pragma_java_exceptions (dfile)
cpp_reader *dfile ATTRIBUTE_UNUSED;
{
tree x;
if (c_lex (&x) != CPP_EOF)
warning ("junk at end of #pragma GCC java_exceptions");
choose_personality_routine (lang_java);
}
void
do_pending_lang_change ()
{
for (; pending_lang_change > 0; --pending_lang_change)
push_lang_context (lang_name_c);
for (; pending_lang_change < 0; ++pending_lang_change)
pop_lang_context ();
}
/* Return true if d is in a global scope. */
static int
is_global (d)
tree d;
{
while (1)
switch (TREE_CODE (d))
{
case ERROR_MARK:
return 1;
case OVERLOAD: d = OVL_FUNCTION (d); continue;
case TREE_LIST: d = TREE_VALUE (d); continue;
default:
my_friendly_assert (DECL_P (d), 980629);
return DECL_NAMESPACE_SCOPE_P (d);
}
}
tree
do_identifier (token, parsing, args)
register tree token;
int parsing;
tree args;
{
register tree id;
int lexing = (parsing == 1);
if (! lexing)
id = lookup_name (token, 0);
else
id = lastiddecl;
if (lexing && id && TREE_DEPRECATED (id))
warn_deprecated_use (id);
/* Do Koenig lookup if appropriate (inside templates we build lookup
expressions instead).
[basic.lookup.koenig]: If the ordinary unqualified lookup of the name
finds the declaration of a class member function, the associated
namespaces and classes are not considered. */
if (args && !current_template_parms && (!id || is_global (id)))
id = lookup_arg_dependent (token, id, args);
/* Remember that this name has been used in the class definition, as per
[class.scope0] */
if (id && parsing)
maybe_note_name_used_in_class (token, id);
if (id == error_mark_node)
{
/* lookup_name quietly returns error_mark_node if we're parsing,
as we don't want to complain about an identifier that ends up
being used as a declarator. So we call it again to get the error
message. */
id = lookup_name (token, 0);
return error_mark_node;
}
if (!id || (TREE_CODE (id) == FUNCTION_DECL
&& DECL_ANTICIPATED (id)))
{
if (current_template_parms)
return build_min_nt (LOOKUP_EXPR, token);
else if (IDENTIFIER_TYPENAME_P (token))
/* A templated conversion operator might exist. */
return token;
else if (IDENTIFIER_OPNAME_P (token))
{
if (token != ansi_opname (ERROR_MARK))
error ("`%D' not defined", token);
id = error_mark_node;
}
else if (current_function_decl == 0)
{
error ("`%D' was not declared in this scope", token);
id = error_mark_node;
}
else
{
if (IDENTIFIER_NAMESPACE_VALUE (token) != error_mark_node
|| IDENTIFIER_ERROR_LOCUS (token) != current_function_decl)
{
static int undeclared_variable_notice;
error ("`%D' undeclared (first use this function)", token);
if (! undeclared_variable_notice)
{
error ("(Each undeclared identifier is reported only once for each function it appears in.)");
undeclared_variable_notice = 1;
}
}
id = error_mark_node;
/* Prevent repeated error messages. */
SET_IDENTIFIER_NAMESPACE_VALUE (token, error_mark_node);
SET_IDENTIFIER_ERROR_LOCUS (token, current_function_decl);
}
}
if (TREE_CODE (id) == VAR_DECL && DECL_DEAD_FOR_LOCAL (id))
{
tree shadowed = DECL_SHADOWED_FOR_VAR (id);
while (shadowed != NULL_TREE && TREE_CODE (shadowed) == VAR_DECL
&& DECL_DEAD_FOR_LOCAL (shadowed))
shadowed = DECL_SHADOWED_FOR_VAR (shadowed);
if (!shadowed)
shadowed = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (id));
if (shadowed)
{
if (!DECL_ERROR_REPORTED (id))
{
warning ("name lookup of `%s' changed",
IDENTIFIER_POINTER (token));
cp_warning_at (" matches this `%D' under ISO standard rules",
shadowed);
cp_warning_at (" matches this `%D' under old rules", id);
DECL_ERROR_REPORTED (id) = 1;
}
id = shadowed;
}
else if (!DECL_ERROR_REPORTED (id))
{
DECL_ERROR_REPORTED (id) = 1;
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (id)))
{
error ("name lookup of `%s' changed for new ISO `for' scoping",
IDENTIFIER_POINTER (token));
cp_error_at (" cannot use obsolete binding at `%D' because it has a destructor", id);
id = error_mark_node;
}
else
{
pedwarn ("name lookup of `%s' changed for new ISO `for' scoping",
IDENTIFIER_POINTER (token));
cp_pedwarn_at (" using obsolete binding at `%D'", id);
}
}
}
/* TREE_USED is set in `hack_identifier'. */
if (TREE_CODE (id) == CONST_DECL)
{
/* Check access. */
if (IDENTIFIER_CLASS_VALUE (token) == id)
enforce_access (CP_DECL_CONTEXT(id), id);
if (!processing_template_decl || DECL_TEMPLATE_PARM_P (id))
id = DECL_INITIAL (id);
}
else
id = hack_identifier (id, token);
/* We must look up dependent names when the template is
instantiated, not while parsing it. For now, we don't
distinguish between dependent and independent names. So, for
example, we look up all overloaded functions at
instantiation-time, even though in some cases we should just use
the DECL we have here. We also use LOOKUP_EXPRs to find things
like local variables, rather than creating TEMPLATE_DECLs for the
local variables and then finding matching instantiations. */
if (current_template_parms
&& (is_overloaded_fn (id)
|| (TREE_CODE (id) == VAR_DECL
&& CP_DECL_CONTEXT (id)
&& TREE_CODE (CP_DECL_CONTEXT (id)) == FUNCTION_DECL)
|| TREE_CODE (id) == PARM_DECL
|| TREE_CODE (id) == RESULT_DECL
|| TREE_CODE (id) == USING_DECL))
id = build_min_nt (LOOKUP_EXPR, token);
return id;
}
tree
do_scoped_id (token, parsing)
tree token;
int parsing;
{
tree id;
/* during parsing, this is ::name. Otherwise, it is black magic. */
if (parsing)
{
id = make_node (CPLUS_BINDING);
if (!qualified_lookup_using_namespace (token, global_namespace, id, 0))
id = NULL_TREE;
else
id = BINDING_VALUE (id);
}
else
id = IDENTIFIER_GLOBAL_VALUE (token);
if (parsing && yychar == YYEMPTY)
yychar = yylex ();
if (!id || (TREE_CODE (id) == FUNCTION_DECL
&& DECL_ANTICIPATED (id)))
{
if (processing_template_decl)
{
id = build_min_nt (LOOKUP_EXPR, token);
LOOKUP_EXPR_GLOBAL (id) = 1;
return id;
}
if (IDENTIFIER_NAMESPACE_VALUE (token) != error_mark_node)
error ("`::%D' undeclared (first use here)", token);
id = error_mark_node;
/* Prevent repeated error messages. */
SET_IDENTIFIER_NAMESPACE_VALUE (token, error_mark_node);
}
else
{
if (TREE_CODE (id) == ADDR_EXPR)
mark_used (TREE_OPERAND (id, 0));
else if (TREE_CODE (id) != OVERLOAD)
mark_used (id);
}
if (TREE_CODE (id) == CONST_DECL && ! processing_template_decl)
{
/* XXX CHS - should we set TREE_USED of the constant? */
id = DECL_INITIAL (id);
/* This is to prevent an enum whose value is 0
from being considered a null pointer constant. */
id = build1 (NOP_EXPR, TREE_TYPE (id), id);
TREE_CONSTANT (id) = 1;
}
if (processing_template_decl)
{
if (is_overloaded_fn (id))
{
id = build_min_nt (LOOKUP_EXPR, token);
LOOKUP_EXPR_GLOBAL (id) = 1;
return id;
}
/* else just use the decl */
}
return convert_from_reference (id);
}
tree
identifier_typedecl_value (node)
tree node;
{
tree t, type;
type = IDENTIFIER_TYPE_VALUE (node);
if (type == NULL_TREE)
return NULL_TREE;
if (IDENTIFIER_BINDING (node))
{
t = IDENTIFIER_VALUE (node);
if (t && TREE_CODE (t) == TYPE_DECL && TREE_TYPE (t) == type)
return t;
}
if (IDENTIFIER_NAMESPACE_VALUE (node))
{
t = IDENTIFIER_NAMESPACE_VALUE (node);
if (t && TREE_CODE (t) == TYPE_DECL && TREE_TYPE (t) == type)
return t;
}
/* Will this one ever happen? */
if (TYPE_MAIN_DECL (type))
return TYPE_MAIN_DECL (type);
/* We used to do an internal error of 62 here, but instead we will
handle the return of a null appropriately in the callers. */
return NULL_TREE;
}
#ifdef GATHER_STATISTICS
/* The original for tree_node_kind is in the toplevel tree.c; changes there
need to be brought into here, unless this were actually put into a header
instead. */
/* Statistics-gathering stuff. */
typedef enum
{
d_kind,
t_kind,
b_kind,
s_kind,
r_kind,
e_kind,
c_kind,
id_kind,
op_id_kind,
perm_list_kind,
temp_list_kind,
vec_kind,
x_kind,
lang_decl,
lang_type,
all_kinds
} tree_node_kind;
extern int tree_node_counts[];
extern int tree_node_sizes[];
#endif
tree
build_lang_decl (code, name, type)
enum tree_code code;
tree name;
tree type;
{
tree t;
t = build_decl (code, name, type);
retrofit_lang_decl (t);
return t;
}
/* Add DECL_LANG_SPECIFIC info to T. Called from build_lang_decl
and pushdecl (for functions generated by the backend). */
void
retrofit_lang_decl (t)
tree t;
{
struct lang_decl *ld;
size_t size;
if (CAN_HAVE_FULL_LANG_DECL_P (t))
size = sizeof (struct lang_decl);
else
size = sizeof (struct lang_decl_flags);
ld = (struct lang_decl *) ggc_alloc_cleared (size);
DECL_LANG_SPECIFIC (t) = ld;
if (current_lang_name == lang_name_cplusplus)
SET_DECL_LANGUAGE (t, lang_cplusplus);
else if (current_lang_name == lang_name_c)
SET_DECL_LANGUAGE (t, lang_c);
else if (current_lang_name == lang_name_java)
SET_DECL_LANGUAGE (t, lang_java);
else abort ();
#ifdef GATHER_STATISTICS
tree_node_counts[(int)lang_decl] += 1;
tree_node_sizes[(int)lang_decl] += size;
#endif
}
void
cxx_dup_lang_specific_decl (node)
tree node;
{
int size;
struct lang_decl *ld;
if (! DECL_LANG_SPECIFIC (node))
return;
if (!CAN_HAVE_FULL_LANG_DECL_P (node))
size = sizeof (struct lang_decl_flags);
else
size = sizeof (struct lang_decl);
ld = (struct lang_decl *) ggc_alloc (size);
memcpy (ld, DECL_LANG_SPECIFIC (node), size);
DECL_LANG_SPECIFIC (node) = ld;
#ifdef GATHER_STATISTICS
tree_node_counts[(int)lang_decl] += 1;
tree_node_sizes[(int)lang_decl] += size;
#endif
}
/* Copy DECL, including any language-specific parts. */
tree
copy_decl (decl)
tree decl;
{
tree copy;
copy = copy_node (decl);
cxx_dup_lang_specific_decl (copy);
return copy;
}
/* Replace the shared language-specific parts of NODE with a new copy. */
static void
copy_lang_type (node)
tree node;
{
int size;
struct lang_type *lt;
if (! TYPE_LANG_SPECIFIC (node))
return;
size = sizeof (struct lang_type);
lt = (struct lang_type *) ggc_alloc (size);
memcpy (lt, TYPE_LANG_SPECIFIC (node), size);
TYPE_LANG_SPECIFIC (node) = lt;
#ifdef GATHER_STATISTICS
tree_node_counts[(int)lang_type] += 1;
tree_node_sizes[(int)lang_type] += size;
#endif
}
/* Copy TYPE, including any language-specific parts. */
tree
copy_type (type)
tree type;
{
tree copy;
copy = copy_node (type);
copy_lang_type (copy);
return copy;
}
tree
cxx_make_type (code)
enum tree_code code;
{
register tree t = make_node (code);
/* Create lang_type structure. */
if (IS_AGGR_TYPE_CODE (code)
|| code == BOUND_TEMPLATE_TEMPLATE_PARM)
{
struct lang_type *pi;
pi = ((struct lang_type *)
ggc_alloc_cleared (sizeof (struct lang_type)));
TYPE_LANG_SPECIFIC (t) = pi;
#ifdef GATHER_STATISTICS
tree_node_counts[(int)lang_type] += 1;
tree_node_sizes[(int)lang_type] += sizeof (struct lang_type);
#endif
}
/* Set up some flags that give proper default behavior. */
if (IS_AGGR_TYPE_CODE (code))
{
SET_CLASSTYPE_INTERFACE_UNKNOWN_X (t, interface_unknown);
CLASSTYPE_INTERFACE_ONLY (t) = interface_only;
/* Make sure this is laid out, for ease of use later. In the
presence of parse errors, the normal was of assuring this
might not ever get executed, so we lay it out *immediately*. */
build_pointer_type (t);
}
else
/* We use TYPE_ALIAS_SET for the CLASSTYPE_MARKED bits. But,
TYPE_ALIAS_SET is initialized to -1 by default, so we must
clear it here. */
TYPE_ALIAS_SET (t) = 0;
/* We need to allocate a TYPE_BINFO even for TEMPLATE_TYPE_PARMs
since they can be virtual base types, and we then need a
canonical binfo for them. Ideally, this would be done lazily for
all types. */
if (IS_AGGR_TYPE_CODE (code) || code == TEMPLATE_TYPE_PARM
|| code == BOUND_TEMPLATE_TEMPLATE_PARM
|| code == TYPENAME_TYPE)
TYPE_BINFO (t) = make_binfo (size_zero_node, t, NULL_TREE, NULL_TREE);
return t;
}
tree
make_aggr_type (code)
enum tree_code code;
{
tree t = cxx_make_type (code);
if (IS_AGGR_TYPE_CODE (code))
SET_IS_AGGR_TYPE (t, 1);
return t;
}
void
compiler_error VPARAMS ((const char *msg, ...))
{
char buf[1024];
VA_OPEN (ap, msg);
VA_FIXEDARG (ap, const char *, msg);
vsprintf (buf, msg, ap);
VA_CLOSE (ap);
error_with_file_and_line (input_filename, lineno, "%s (compiler error)", buf);
}
/* Return the type-qualifier corresponding to the identifier given by
RID. */
int
cp_type_qual_from_rid (rid)
tree rid;
{
if (rid == ridpointers[(int) RID_CONST])
return TYPE_QUAL_CONST;
else if (rid == ridpointers[(int) RID_VOLATILE])
return TYPE_QUAL_VOLATILE;
else if (rid == ridpointers[(int) RID_RESTRICT])
return TYPE_QUAL_RESTRICT;
abort ();
return TYPE_UNQUALIFIED;
}
|