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
|
/* Copyright (C) 2008-2021 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#define GCC_C_COMMON_C
#include "options.h" /* For cpp_reason_option_codes. */
#undef GCC_C_COMMON_C
#include "target.h"
#include "gfortran.h"
#include "diagnostic.h"
#include "toplev.h"
#include "../../libcpp/internal.h"
#include "cpp.h"
#include "incpath.h"
#include "cppbuiltin.h"
#include "mkdeps.h"
#ifndef TARGET_SYSTEM_ROOT
# define TARGET_SYSTEM_ROOT NULL
#endif
#ifndef TARGET_CPU_CPP_BUILTINS
# define TARGET_CPU_CPP_BUILTINS()
#endif
#ifndef TARGET_OS_CPP_BUILTINS
# define TARGET_OS_CPP_BUILTINS()
#endif
#ifndef TARGET_OBJFMT_CPP_BUILTINS
# define TARGET_OBJFMT_CPP_BUILTINS()
#endif
/* Holds switches parsed by gfc_cpp_handle_option (), but whose
handling is deferred to gfc_cpp_init (). */
typedef struct
{
enum opt_code code;
const char *arg;
}
gfc_cpp_deferred_opt_t;
/* Defined and undefined macros being queued for output with -dU at
the next newline. */
typedef struct gfc_cpp_macro_queue
{
struct gfc_cpp_macro_queue *next; /* Next macro in the list. */
char *macro; /* The name of the macro if not
defined, the full definition if
defined. */
} gfc_cpp_macro_queue;
static gfc_cpp_macro_queue *cpp_define_queue, *cpp_undefine_queue;
struct gfc_cpp_option_data
{
/* Argument of -cpp, implied by SPEC;
if NULL, preprocessing disabled. */
const char *temporary_filename;
const char *output_filename; /* -o <arg> */
int preprocess_only; /* -E */
int discard_comments; /* -C */
int discard_comments_in_macro_exp; /* -CC */
int print_include_names; /* -H */
int no_line_commands; /* -P */
char dump_macros; /* -d[DMNU] */
int dump_includes; /* -dI */
int working_directory; /* -fworking-directory */
int no_predefined; /* -undef */
int standard_include_paths; /* -nostdinc */
int verbose; /* -v */
int deps; /* -M */
int deps_skip_system; /* -MM */
const char *deps_filename; /* -M[M]D */
const char *deps_filename_user; /* -MF <arg> */
int deps_missing_are_generated; /* -MG */
int deps_phony; /* -MP */
int warn_date_time; /* -Wdate-time */
const char *multilib; /* -imultilib <dir> */
const char *prefix; /* -iprefix <dir> */
const char *sysroot; /* -isysroot <dir> */
/* Options whose handling needs to be deferred until the
appropriate cpp-objects are created:
-A predicate=answer
-D <macro>[=<val>]
-U <macro> */
gfc_cpp_deferred_opt_t *deferred_opt;
int deferred_opt_count;
}
gfc_cpp_option;
/* Structures used with libcpp: */
static cpp_options *cpp_option = NULL;
static cpp_reader *cpp_in = NULL;
/* Encapsulates state used to convert a stream of cpp-tokens into
a text file. */
static struct
{
FILE *outf; /* Stream to write to. */
const cpp_token *prev; /* Previous token. */
const cpp_token *source; /* Source token for spacing. */
int src_line; /* Line number currently being written. */
unsigned char printed; /* Nonzero if something output at line. */
bool first_time; /* cb_file_change hasn't been called yet. */
} print;
/* General output routines. */
static void scan_translation_unit (cpp_reader *);
static void scan_translation_unit_trad (cpp_reader *);
/* Callback routines for the parser. Most of these are active only
in specific modes. */
static void cb_file_change (cpp_reader *, const line_map_ordinary *);
static void cb_line_change (cpp_reader *, const cpp_token *, int);
static void cb_define (cpp_reader *, location_t, cpp_hashnode *);
static void cb_undef (cpp_reader *, location_t, cpp_hashnode *);
static void cb_def_pragma (cpp_reader *, location_t);
static void cb_include (cpp_reader *, location_t, const unsigned char *,
const char *, int, const cpp_token **);
static void cb_ident (cpp_reader *, location_t, const cpp_string *);
static void cb_used_define (cpp_reader *, location_t, cpp_hashnode *);
static void cb_used_undef (cpp_reader *, location_t, cpp_hashnode *);
static bool cb_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
enum cpp_warning_reason, rich_location *,
const char *, va_list *)
ATTRIBUTE_GCC_DIAG(5,0);
void pp_dir_change (cpp_reader *, const char *);
static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
static void dump_queued_macros (cpp_reader *);
static void
cpp_define_builtins (cpp_reader *pfile)
{
/* Initialize CPP built-ins; '1' corresponds to 'flag_hosted'
in C, defines __STDC_HOSTED__?! */
cpp_init_builtins (pfile, 0);
/* Initialize GFORTRAN specific builtins.
These are documented. */
define_language_independent_builtin_macros (pfile);
cpp_define (pfile, "__GFORTRAN__=1");
cpp_define (pfile, "_LANGUAGE_FORTRAN=1");
if (flag_openacc)
cpp_define (pfile, "_OPENACC=201711");
if (flag_openmp)
cpp_define (pfile, "_OPENMP=201511");
/* The defines below are necessary for the TARGET_* macros.
FIXME: Note that builtin_define_std() actually is a function
in c-cppbuiltin.c which uses flags undefined for Fortran.
Let's skip this for now. If needed, one needs to look into it
once more. */
# define builtin_define(TXT) cpp_define (pfile, TXT)
# define builtin_define_std(TXT)
# define builtin_assert(TXT) cpp_assert (pfile, TXT)
/* FIXME: Pandora's Box
Using the macros below results in multiple breakages:
- mingw will fail to compile this file as dependent macros
assume to be used in c-cppbuiltin.c only. Further, they use
flags only valid/defined in C (same as noted above).
[config/i386/mingw32.h, config/i386/cygming.h]
- other platforms (not as popular) break similarly
[grep for 'builtin_define_with_int_value' in gcc/config/]
TARGET_CPU_CPP_BUILTINS ();
TARGET_OS_CPP_BUILTINS ();
TARGET_OBJFMT_CPP_BUILTINS (); */
#undef builtin_define
#undef builtin_define_std
#undef builtin_assert
}
bool
gfc_cpp_enabled (void)
{
return gfc_cpp_option.temporary_filename != NULL;
}
bool
gfc_cpp_preprocess_only (void)
{
return gfc_cpp_option.preprocess_only;
}
bool
gfc_cpp_makedep (void)
{
return gfc_cpp_option.deps;
}
void
gfc_cpp_add_dep (const char *name, bool system)
{
if (!gfc_cpp_option.deps_skip_system || !system)
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_dep (deps, name);
}
void
gfc_cpp_add_target (const char *name)
{
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_target (deps, name, 0);
}
const char *
gfc_cpp_temporary_file (void)
{
return gfc_cpp_option.temporary_filename;
}
static void
gfc_cpp_register_include_paths (bool verbose_missing_dir_warn)
{
int cxx_stdinc = 0;
cpp_get_options (cpp_in)->warn_missing_include_dirs
= (global_options.x_cpp_warn_missing_include_dirs
&& verbose_missing_dir_warn);
register_include_chains (cpp_in, gfc_cpp_option.sysroot,
gfc_cpp_option.prefix, gfc_cpp_option.multilib,
gfc_cpp_option.standard_include_paths, cxx_stdinc,
gfc_cpp_option.verbose);
}
void
gfc_cpp_init_options (unsigned int decoded_options_count,
struct cl_decoded_option *decoded_options ATTRIBUTE_UNUSED)
{
/* Do not create any objects from libcpp here. If no
preprocessing is requested, this would be wasted
time and effort.
See gfc_cpp_post_options() instead. */
gfc_cpp_option.temporary_filename = NULL;
gfc_cpp_option.output_filename = NULL;
gfc_cpp_option.preprocess_only = 0;
gfc_cpp_option.discard_comments = 1;
gfc_cpp_option.discard_comments_in_macro_exp = 1;
gfc_cpp_option.print_include_names = 0;
gfc_cpp_option.no_line_commands = 0;
gfc_cpp_option.dump_macros = '\0';
gfc_cpp_option.dump_includes = 0;
gfc_cpp_option.working_directory = -1;
gfc_cpp_option.no_predefined = 0;
gfc_cpp_option.standard_include_paths = 1;
gfc_cpp_option.verbose = 0;
gfc_cpp_option.warn_date_time = 0;
gfc_cpp_option.deps = 0;
gfc_cpp_option.deps_skip_system = 0;
gfc_cpp_option.deps_phony = 0;
gfc_cpp_option.deps_missing_are_generated = 0;
gfc_cpp_option.deps_filename = NULL;
gfc_cpp_option.deps_filename_user = NULL;
gfc_cpp_option.multilib = NULL;
gfc_cpp_option.prefix = NULL;
gfc_cpp_option.sysroot = TARGET_SYSTEM_ROOT;
gfc_cpp_option.deferred_opt = XNEWVEC (gfc_cpp_deferred_opt_t,
decoded_options_count);
gfc_cpp_option.deferred_opt_count = 0;
}
int
gfc_cpp_handle_option (size_t scode, const char *arg, int value ATTRIBUTE_UNUSED)
{
int result = 1;
enum opt_code code = (enum opt_code) scode;
switch (code)
{
default:
result = 0;
break;
case OPT_cpp_:
gfc_cpp_option.temporary_filename = arg;
break;
case OPT_nocpp:
gfc_cpp_option.temporary_filename = 0L;
break;
case OPT_d:
for ( ; *arg; ++arg)
switch (*arg)
{
case 'D':
case 'M':
case 'N':
case 'U':
gfc_cpp_option.dump_macros = *arg;
break;
case 'I':
gfc_cpp_option.dump_includes = 1;
break;
}
break;
case OPT_fworking_directory:
gfc_cpp_option.working_directory = value;
break;
case OPT_idirafter:
gfc_cpp_add_include_path_after (xstrdup(arg), true);
break;
case OPT_imultilib:
gfc_cpp_option.multilib = arg;
break;
case OPT_iprefix:
gfc_cpp_option.prefix = arg;
break;
case OPT_isysroot:
gfc_cpp_option.sysroot = arg;
break;
case OPT_iquote:
case OPT_isystem:
gfc_cpp_add_include_path (xstrdup(arg), true);
break;
case OPT_nostdinc:
gfc_cpp_option.standard_include_paths = value;
break;
case OPT_o:
if (!gfc_cpp_option.output_filename)
gfc_cpp_option.output_filename = arg;
else
gfc_fatal_error ("output filename specified twice");
break;
case OPT_undef:
gfc_cpp_option.no_predefined = value;
break;
case OPT_v:
gfc_cpp_option.verbose = value;
break;
case OPT_Wdate_time:
gfc_cpp_option.warn_date_time = value;
break;
case OPT_A:
case OPT_D:
case OPT_U:
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].code = code;
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].arg = arg;
gfc_cpp_option.deferred_opt_count++;
break;
case OPT_C:
gfc_cpp_option.discard_comments = 0;
break;
case OPT_CC:
gfc_cpp_option.discard_comments = 0;
gfc_cpp_option.discard_comments_in_macro_exp = 0;
break;
case OPT_E:
gfc_cpp_option.preprocess_only = 1;
break;
case OPT_H:
gfc_cpp_option.print_include_names = 1;
break;
case OPT_MM:
gfc_cpp_option.deps_skip_system = 1;
/* fall through */
case OPT_M:
gfc_cpp_option.deps = 1;
break;
case OPT_MMD:
gfc_cpp_option.deps_skip_system = 1;
/* fall through */
case OPT_MD:
gfc_cpp_option.deps = 1;
gfc_cpp_option.deps_filename = arg;
break;
case OPT_MF:
/* If specified multiple times, last one wins. */
gfc_cpp_option.deps_filename_user = arg;
break;
case OPT_MG:
gfc_cpp_option.deps_missing_are_generated = 1;
break;
case OPT_MP:
gfc_cpp_option.deps_phony = 1;
break;
case OPT_MQ:
case OPT_MT:
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].code = code;
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].arg = arg;
gfc_cpp_option.deferred_opt_count++;
break;
case OPT_P:
gfc_cpp_option.no_line_commands = 1;
break;
}
return result;
}
/* This function needs to be called before gfc_cpp_register_include_paths
as the latter may diagnose missing include directories. */
static void
gfc_cpp_init_cb (void)
{
struct cpp_callbacks *cb;
cb = cpp_get_callbacks (cpp_in);
cb->file_change = cb_file_change;
cb->line_change = cb_line_change;
cb->ident = cb_ident;
cb->def_pragma = cb_def_pragma;
cb->diagnostic = cb_cpp_diagnostic;
if (gfc_cpp_option.dump_includes)
cb->include = cb_include;
if ((gfc_cpp_option.dump_macros == 'D')
|| (gfc_cpp_option.dump_macros == 'N'))
{
cb->define = cb_define;
cb->undef = cb_undef;
}
if (gfc_cpp_option.dump_macros == 'U')
{
cb->before_define = dump_queued_macros;
cb->used_define = cb_used_define;
cb->used_undef = cb_used_undef;
}
}
void
gfc_cpp_post_options (bool verbose_missing_dir_warn)
{
/* Any preprocessing-related option without '-cpp' is considered
an error. */
if (!gfc_cpp_enabled ()
&& (gfc_cpp_preprocess_only ()
|| gfc_cpp_makedep ()
|| !gfc_cpp_option.discard_comments
|| !gfc_cpp_option.discard_comments_in_macro_exp
|| gfc_cpp_option.print_include_names
|| gfc_cpp_option.no_line_commands
|| gfc_cpp_option.dump_macros
|| gfc_cpp_option.dump_includes))
gfc_fatal_error ("To enable preprocessing, use %<-cpp%>");
if (!gfc_cpp_enabled ())
return;
cpp_in = cpp_create_reader (CLK_GNUC89, NULL, line_table);
gcc_assert (cpp_in);
/* The cpp_options-structure defines far more flags than those set here.
If any other is implemented, see c-opt.c (sanitize_cpp_opts) for
inter-option dependencies that may need to be enforced. */
cpp_option = cpp_get_options (cpp_in);
gcc_assert (cpp_option);
/* TODO: allow non-traditional modes, e.g. by -cpp-std=...? */
cpp_option->traditional = 1;
cpp_option->cplusplus_comments = 0;
cpp_option->cpp_pedantic = pedantic;
cpp_option->dollars_in_ident = flag_dollar_ok;
cpp_option->discard_comments = gfc_cpp_option.discard_comments;
cpp_option->discard_comments_in_macro_exp = gfc_cpp_option.discard_comments_in_macro_exp;
cpp_option->print_include_names = gfc_cpp_option.print_include_names;
cpp_option->preprocessed = gfc_option.flag_preprocessed;
cpp_option->warn_date_time = gfc_cpp_option.warn_date_time;
if (gfc_cpp_makedep ())
{
cpp_option->deps.style = DEPS_USER;
cpp_option->deps.phony_targets = gfc_cpp_option.deps_phony;
cpp_option->deps.missing_files = gfc_cpp_option.deps_missing_are_generated;
/* -MF <arg> overrides -M[M]D. */
if (gfc_cpp_option.deps_filename_user)
gfc_cpp_option.deps_filename = gfc_cpp_option.deps_filename_user;
}
if (gfc_cpp_option.working_directory == -1)
gfc_cpp_option.working_directory = (debug_info_level != DINFO_LEVEL_NONE);
cpp_post_options (cpp_in);
/* Let diagnostics infrastructure know how to convert input files the same
way libcpp will do it, namely, with no charset conversion but with
skipping of a UTF-8 BOM if present. */
diagnostic_initialize_input_context (global_dc, nullptr, true);
gfc_cpp_init_cb ();
gfc_cpp_register_include_paths (verbose_missing_dir_warn);
}
void
gfc_cpp_init_0 (void)
{
/* Initialize the print structure. Setting print.src_line to -1 here is
a trick to guarantee that the first token of the file will cause
a linemarker to be output by maybe_print_line. */
print.src_line = -1;
print.printed = 0;
print.prev = 0;
print.first_time = 1;
if (gfc_cpp_preprocess_only ())
{
if (gfc_cpp_option.output_filename)
{
/* This needs cheating: with "-E -o <file>", the user wants the
preprocessed output in <file>. However, if nothing is done
about it <file> is also used for assembler output. Hence, it
is necessary to redirect assembler output (actually nothing
as -E implies -fsyntax-only) to another file, otherwise the
output from preprocessing is lost. */
asm_file_name = gfc_cpp_option.temporary_filename;
print.outf = fopen (gfc_cpp_option.output_filename, "w");
if (print.outf == NULL)
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.output_filename,
xstrerror (errno));
}
else
print.outf = stdout;
}
else
{
print.outf = fopen (gfc_cpp_option.temporary_filename, "w");
if (print.outf == NULL)
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.temporary_filename, xstrerror (errno));
}
gcc_assert(cpp_in);
if (!cpp_read_main_file (cpp_in, gfc_source_file))
errorcount++;
}
void
gfc_cpp_init (void)
{
int i;
if (gfc_option.flag_preprocessed)
return;
cpp_change_file (cpp_in, LC_RENAME, _("<built-in>"));
if (!gfc_cpp_option.no_predefined)
{
/* Make sure all of the builtins about to be declared have
BUILTINS_LOCATION has their location_t. */
cpp_force_token_locations (cpp_in, BUILTINS_LOCATION);
cpp_define_builtins (cpp_in);
cpp_stop_forcing_token_locations (cpp_in);
}
/* Handle deferred options from command-line. */
cpp_change_file (cpp_in, LC_RENAME, _("<command-line>"));
for (i = 0; i < gfc_cpp_option.deferred_opt_count; i++)
{
gfc_cpp_deferred_opt_t *opt = &gfc_cpp_option.deferred_opt[i];
if (opt->code == OPT_D)
cpp_define (cpp_in, opt->arg);
else if (opt->code == OPT_U)
cpp_undef (cpp_in, opt->arg);
else if (opt->code == OPT_A)
{
if (opt->arg[0] == '-')
cpp_unassert (cpp_in, opt->arg + 1);
else
cpp_assert (cpp_in, opt->arg);
}
else if (opt->code == OPT_MT || opt->code == OPT_MQ)
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
}
/* Pre-defined macros for non-required INTEGER kind types. */
for (gfc_integer_info *itype = gfc_integer_kinds; itype->kind != 0; itype++)
{
if (itype->kind == 1)
cpp_define (cpp_in, "__GFC_INT_1__=1");
if (itype->kind == 2)
cpp_define (cpp_in, "__GFC_INT_2__=1");
if (itype->kind == 8)
cpp_define (cpp_in, "__GFC_INT_8__=1");
if (itype->kind == 16)
cpp_define (cpp_in, "__GFC_INT_16__=1");
}
/* Pre-defined macros for non-required REAL kind types. */
for (gfc_real_info *rtype = gfc_real_kinds; rtype->kind != 0; rtype++)
{
if (rtype->kind == 10)
cpp_define (cpp_in, "__GFC_REAL_10__=1");
if (rtype->kind == 16)
cpp_define (cpp_in, "__GFC_REAL_16__=1");
}
if (gfc_cpp_option.working_directory
&& gfc_cpp_option.preprocess_only && !gfc_cpp_option.no_line_commands)
pp_dir_change (cpp_in, get_src_pwd ());
}
bool
gfc_cpp_preprocess (const char *source_file)
{
if (!gfc_cpp_enabled ())
return false;
cpp_change_file (cpp_in, LC_RENAME, source_file);
if (cpp_option->traditional)
scan_translation_unit_trad (cpp_in);
else
scan_translation_unit (cpp_in);
/* -dM command line option. */
if (gfc_cpp_preprocess_only () &&
gfc_cpp_option.dump_macros == 'M')
{
putc ('\n', print.outf);
cpp_forall_identifiers (cpp_in, dump_macro, NULL);
}
putc ('\n', print.outf);
if (!gfc_cpp_preprocess_only ()
|| (gfc_cpp_preprocess_only () && gfc_cpp_option.output_filename))
fclose (print.outf);
return true;
}
void
gfc_cpp_done (void)
{
if (!gfc_cpp_enabled ())
return;
gcc_assert (cpp_in);
if (gfc_cpp_makedep ())
{
if (gfc_cpp_option.deps_filename)
{
FILE *f = fopen (gfc_cpp_option.deps_filename, "w");
if (f)
{
cpp_finish (cpp_in, f);
fclose (f);
}
else
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.deps_filename,
xstrerror (errno));
}
else
cpp_finish (cpp_in, stdout);
}
cpp_undef_all (cpp_in);
cpp_clear_file_cache (cpp_in);
}
/* PATH must be malloc-ed and NULL-terminated. */
void
gfc_cpp_add_include_path (char *path, bool user_supplied)
{
/* CHAIN sets cpp_dir->sysp which differs from 0 if PATH is a system
include path. Fortran does not define any system include paths. */
int cxx_aware = 0;
add_path (path, INC_BRACKET, cxx_aware, user_supplied);
}
void
gfc_cpp_add_include_path_after (char *path, bool user_supplied)
{
int cxx_aware = 0;
add_path (path, INC_AFTER, cxx_aware, user_supplied);
}
static void scan_translation_unit_trad (cpp_reader *);
static void account_for_newlines (const unsigned char *, size_t);
static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
static void print_line (location_t, const char *);
static void maybe_print_line (location_t);
/* Writes out the preprocessed file, handling spacing and paste
avoidance issues. */
static void
scan_translation_unit (cpp_reader *pfile)
{
bool avoid_paste = false;
print.source = NULL;
for (;;)
{
const cpp_token *token = cpp_get_token (pfile);
if (token->type == CPP_PADDING)
{
avoid_paste = true;
if (print.source == NULL
|| (!(print.source->flags & PREV_WHITE)
&& token->val.source == NULL))
print.source = token->val.source;
continue;
}
if (token->type == CPP_EOF)
break;
/* Subtle logic to output a space if and only if necessary. */
if (avoid_paste)
{
if (print.source == NULL)
print.source = token;
if (print.source->flags & PREV_WHITE
|| (print.prev
&& cpp_avoid_paste (pfile, print.prev, token))
|| (print.prev == NULL && token->type == CPP_HASH))
putc (' ', print.outf);
}
else if (token->flags & PREV_WHITE)
putc (' ', print.outf);
avoid_paste = false;
print.source = NULL;
print.prev = token;
cpp_output_token (token, print.outf);
if (token->type == CPP_COMMENT)
account_for_newlines (token->val.str.text, token->val.str.len);
}
}
/* Adjust print.src_line for newlines embedded in output. */
static void
account_for_newlines (const unsigned char *str, size_t len)
{
while (len--)
if (*str++ == '\n')
print.src_line++;
}
/* Writes out a traditionally preprocessed file. */
static void
scan_translation_unit_trad (cpp_reader *pfile)
{
while (_cpp_read_logical_line_trad (pfile))
{
size_t len = pfile->out.cur - pfile->out.base;
maybe_print_line (pfile->out.first_line);
fwrite (pfile->out.base, 1, len, print.outf);
print.printed = 1;
if (!CPP_OPTION (pfile, discard_comments))
account_for_newlines (pfile->out.base, len);
}
}
/* If the token read on logical line LINE needs to be output on a
different line to the current one, output the required newlines or
a line marker. */
static void
maybe_print_line (location_t src_loc)
{
const line_map_ordinary *map
= linemap_check_ordinary (linemap_lookup (line_table, src_loc));
int src_line = SOURCE_LINE (map, src_loc);
/* End the previous line of text. */
if (print.printed)
{
putc ('\n', print.outf);
print.src_line++;
print.printed = 0;
}
if (src_line >= print.src_line && src_line < print.src_line + 8)
{
while (src_line > print.src_line)
{
putc ('\n', print.outf);
print.src_line++;
}
}
else
print_line (src_loc, "");
}
/* Output a line marker for logical line LINE. Special flags are "1"
or "2" indicating entering or leaving a file. */
static void
print_line (location_t src_loc, const char *special_flags)
{
/* End any previous line of text. */
if (print.printed)
putc ('\n', print.outf);
print.printed = 0;
if (!gfc_cpp_option.no_line_commands)
{
expanded_location loc;
size_t to_file_len;
unsigned char *to_file_quoted;
unsigned char *p;
int sysp;
loc = expand_location (src_loc);
to_file_len = strlen (loc.file);
to_file_quoted = (unsigned char *) alloca (to_file_len * 4 + 1);
print.src_line = loc.line;
/* cpp_quote_string does not nul-terminate, so we have to do it
ourselves. */
p = cpp_quote_string (to_file_quoted,
(const unsigned char *) loc.file, to_file_len);
*p = '\0';
fprintf (print.outf, "# %u \"%s\"%s",
print.src_line == 0 ? 1 : print.src_line,
to_file_quoted, special_flags);
sysp = in_system_header_at (src_loc);
if (sysp == 2)
fputs (" 3 4", print.outf);
else if (sysp == 1)
fputs (" 3", print.outf);
putc ('\n', print.outf);
}
}
static void
cb_file_change (cpp_reader * ARG_UNUSED (pfile), const line_map_ordinary *map)
{
const char *flags = "";
if (gfc_cpp_option.no_line_commands)
return;
if (!map)
return;
if (print.first_time)
{
/* Avoid printing foo.i when the main file is foo.c. */
if (!cpp_get_options (cpp_in)->preprocessed)
print_line (map->start_location, flags);
print.first_time = 0;
}
else
{
/* Bring current file to correct line when entering a new file. */
if (map->reason == LC_ENTER)
maybe_print_line (linemap_included_from (map));
if (map->reason == LC_ENTER)
flags = " 1";
else if (map->reason == LC_LEAVE)
flags = " 2";
print_line (map->start_location, flags);
}
}
/* Called when a line of output is started. TOKEN is the first token
of the line, and at end of file will be CPP_EOF. */
static void
cb_line_change (cpp_reader *pfile, const cpp_token *token,
int parsing_args)
{
location_t src_loc = token->src_loc;
if (token->type == CPP_EOF || parsing_args)
return;
maybe_print_line (src_loc);
print.prev = 0;
print.source = 0;
/* Supply enough spaces to put this token in its original column,
one space per column greater than 2, since scan_translation_unit
will provide a space if PREV_WHITE. Don't bother trying to
reconstruct tabs; we can't get it right in general, and nothing
ought to care. Some things do care; the fault lies with them. */
if (!CPP_OPTION (pfile, traditional))
{
const line_map_ordinary *map
= linemap_check_ordinary (linemap_lookup (line_table, src_loc));
int spaces = SOURCE_COLUMN (map, src_loc) - 2;
print.printed = 1;
while (-- spaces >= 0)
putc (' ', print.outf);
}
}
static void
cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
const cpp_string *str)
{
maybe_print_line (line);
fprintf (print.outf, "#ident %s\n", str->text);
print.src_line++;
}
static void
cb_define (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
cpp_hashnode *node ATTRIBUTE_UNUSED)
{
maybe_print_line (line);
fputs ("#define ", print.outf);
/* 'D' is whole definition; 'N' is name only. */
if (gfc_cpp_option.dump_macros == 'D')
fputs ((const char *) cpp_macro_definition (pfile, node),
print.outf);
else
fputs ((const char *) NODE_NAME (node), print.outf);
putc ('\n', print.outf);
if (LOCATION_LINE (line) != 0)
print.src_line++;
}
static void
cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
cpp_hashnode *node)
{
maybe_print_line (line);
fprintf (print.outf, "#undef %s\n", NODE_NAME (node));
print.src_line++;
}
static void
cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
const unsigned char *dir, const char *header, int angle_brackets,
const cpp_token **comments)
{
maybe_print_line (line);
if (angle_brackets)
fprintf (print.outf, "#%s <%s>", dir, header);
else
fprintf (print.outf, "#%s \"%s\"", dir, header);
if (comments != NULL)
{
while (*comments != NULL)
{
if ((*comments)->flags & PREV_WHITE)
putc (' ', print.outf);
cpp_output_token (*comments, print.outf);
++comments;
}
}
putc ('\n', print.outf);
print.src_line++;
}
/* Dump out the hash table. */
static int
dump_macro (cpp_reader *pfile, cpp_hashnode *node, void *v ATTRIBUTE_UNUSED)
{
if (cpp_user_macro_p (node))
{
fputs ("#define ", print.outf);
fputs ((const char *) cpp_macro_definition (pfile, node),
print.outf);
putc ('\n', print.outf);
print.src_line++;
}
return 1;
}
static void
cb_used_define (cpp_reader *pfile, location_t line ATTRIBUTE_UNUSED,
cpp_hashnode *node)
{
gfc_cpp_macro_queue *q;
q = XNEW (gfc_cpp_macro_queue);
q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node));
q->next = cpp_define_queue;
cpp_define_queue = q;
}
/* Return the gcc option code associated with the reason for a cpp
message, or 0 if none. */
static int
cb_cpp_diagnostic_cpp_option (enum cpp_warning_reason reason)
{
const struct cpp_reason_option_codes_t *entry;
for (entry = cpp_reason_option_codes; entry->reason != CPP_W_NONE; entry++)
if (entry->reason == reason)
return entry->option_code;
return 0;
}
/* Callback from cpp_error for PFILE to print diagnostics from the
preprocessor. The diagnostic is of type LEVEL, with REASON set
to the reason code if LEVEL is represents a warning, at location
RICHLOC; MSG is the translated message and AP the arguments.
Returns true if a diagnostic was emitted, false otherwise. */
static bool
cb_cpp_diagnostic (cpp_reader *pfile ATTRIBUTE_UNUSED,
enum cpp_diagnostic_level level,
enum cpp_warning_reason reason,
rich_location *richloc,
const char *msg, va_list *ap)
{
diagnostic_info diagnostic;
diagnostic_t dlevel;
bool save_warn_system_headers = global_dc->dc_warn_system_headers;
bool ret;
switch (level)
{
case CPP_DL_WARNING_SYSHDR:
global_dc->dc_warn_system_headers = 1;
/* Fall through. */
case CPP_DL_WARNING:
dlevel = DK_WARNING;
break;
case CPP_DL_PEDWARN:
dlevel = DK_PEDWARN;
break;
case CPP_DL_ERROR:
dlevel = DK_ERROR;
break;
case CPP_DL_ICE:
dlevel = DK_ICE;
break;
case CPP_DL_NOTE:
dlevel = DK_NOTE;
break;
case CPP_DL_FATAL:
dlevel = DK_FATAL;
break;
default:
gcc_unreachable ();
}
diagnostic_set_info_translated (&diagnostic, msg, ap,
richloc, dlevel);
diagnostic_override_option_index (&diagnostic,
cb_cpp_diagnostic_cpp_option (reason));
ret = diagnostic_report_diagnostic (global_dc, &diagnostic);
if (level == CPP_DL_WARNING_SYSHDR)
global_dc->dc_warn_system_headers = save_warn_system_headers;
return ret;
}
/* Callback called when -fworking-director and -E to emit working
directory in cpp output file. */
void
pp_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir)
{
size_t to_file_len = strlen (dir);
unsigned char *to_file_quoted =
(unsigned char *) alloca (to_file_len * 4 + 1);
unsigned char *p;
/* cpp_quote_string does not nul-terminate, so we have to do it ourselves. */
p = cpp_quote_string (to_file_quoted, (const unsigned char *) dir, to_file_len);
*p = '\0';
fprintf (print.outf, "# 1 \"%s//\"\n", to_file_quoted);
}
/* Copy a #pragma directive to the preprocessed output. */
static void
cb_def_pragma (cpp_reader *pfile, location_t line)
{
maybe_print_line (line);
fputs ("#pragma ", print.outf);
cpp_output_line (pfile, print.outf);
print.src_line++;
}
static void
cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED,
location_t line ATTRIBUTE_UNUSED,
cpp_hashnode *node)
{
gfc_cpp_macro_queue *q;
q = XNEW (gfc_cpp_macro_queue);
q->macro = xstrdup ((const char *) NODE_NAME (node));
q->next = cpp_undefine_queue;
cpp_undefine_queue = q;
}
static void
dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED)
{
gfc_cpp_macro_queue *q;
/* End the previous line of text. */
if (print.printed)
{
putc ('\n', print.outf);
print.src_line++;
print.printed = 0;
}
for (q = cpp_define_queue; q;)
{
gfc_cpp_macro_queue *oq;
fputs ("#define ", print.outf);
fputs (q->macro, print.outf);
putc ('\n', print.outf);
print.src_line++;
oq = q;
q = q->next;
free (oq->macro);
free (oq);
}
cpp_define_queue = NULL;
for (q = cpp_undefine_queue; q;)
{
gfc_cpp_macro_queue *oq;
fprintf (print.outf, "#undef %s\n", q->macro);
print.src_line++;
oq = q;
q = q->next;
free (oq->macro);
free (oq);
}
cpp_undefine_queue = NULL;
}
|