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aaf93206 | 1 | /* Preprocess only, using cpplib. |
5624e564 | 2 | Copyright (C) 1995-2015 Free Software Foundation, Inc. |
7f2935c7 PB |
3 | Written by Per Bothner, 1994-95. |
4 | ||
9dcd6f09 NC |
5 | This program is free software; you can redistribute it and/or modify it |
6 | under the terms of the GNU General Public License as published by the | |
7 | Free Software Foundation; either version 3, or (at your option) any | |
8 | later version. | |
7f2935c7 | 9 | |
9dcd6f09 NC |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
7f2935c7 | 14 | |
9dcd6f09 NC |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; see the file COPYING3. If not see | |
17 | <http://www.gnu.org/licenses/>. */ | |
7f2935c7 | 18 | |
84ee6fd4 | 19 | #include "config.h" |
b04cd507 | 20 | #include "system.h" |
4977bab6 | 21 | #include "coretypes.h" |
b04cd507 | 22 | #include "cpplib.h" |
4f4e53dd | 23 | #include "../libcpp/internal.h" |
40e23961 MC |
24 | #include "hash-set.h" |
25 | #include "machmode.h" | |
26 | #include "vec.h" | |
27 | #include "double-int.h" | |
28 | #include "input.h" | |
29 | #include "alias.h" | |
30 | #include "symtab.h" | |
31 | #include "options.h" | |
32 | #include "wide-int.h" | |
33 | #include "inchash.h" | |
63973df3 | 34 | #include "tree.h" |
9d10c9a9 NB |
35 | #include "c-common.h" /* For flags. */ |
36 | #include "c-pragma.h" /* For parse_in. */ | |
63973df3 NB |
37 | |
38 | /* Encapsulates state used to convert a stream of tokens into a text | |
39 | file. */ | |
40 | static struct | |
41 | { | |
42 | FILE *outf; /* Stream to write to. */ | |
63973df3 NB |
43 | const cpp_token *prev; /* Previous token. */ |
44 | const cpp_token *source; /* Source token for spacing. */ | |
12f9df4e | 45 | int src_line; /* Line number currently being written. */ |
63973df3 | 46 | unsigned char printed; /* Nonzero if something output at line. */ |
a1105617 | 47 | bool first_time; /* pp_file_change hasn't been called yet. */ |
22d17b1c | 48 | const char *src_file; /* Current source file. */ |
f41373b6 DS |
49 | bool prev_was_system_token; /* True if the previous token was a |
50 | system token.*/ | |
63973df3 | 51 | } print; |
7f2935c7 | 52 | |
93d45d9e JM |
53 | /* Defined and undefined macros being queued for output with -dU at |
54 | the next newline. */ | |
55 | typedef struct macro_queue | |
56 | { | |
57 | struct macro_queue *next; /* Next macro in the list. */ | |
58 | char *macro; /* The name of the macro if not | |
59 | defined, the full definition if | |
60 | defined. */ | |
61 | } macro_queue; | |
62 | static macro_queue *define_queue, *undef_queue; | |
63 | ||
93c80368 | 64 | /* General output routines. */ |
2f6e4e97 | 65 | static void scan_translation_unit (cpp_reader *); |
ccfc4c91 OW |
66 | static void print_lines_directives_only (int, const void *, size_t); |
67 | static void scan_translation_unit_directives_only (cpp_reader *); | |
2f6e4e97 | 68 | static void scan_translation_unit_trad (cpp_reader *); |
43839642 | 69 | static void account_for_newlines (const unsigned char *, size_t); |
2f6e4e97 | 70 | static int dump_macro (cpp_reader *, cpp_hashnode *, void *); |
93d45d9e | 71 | static void dump_queued_macros (cpp_reader *); |
93c80368 | 72 | |
f41373b6 DS |
73 | static bool print_line_1 (source_location, const char*, FILE *); |
74 | static bool print_line (source_location, const char *); | |
75 | static bool maybe_print_line_1 (source_location, FILE *); | |
76 | static bool maybe_print_line (source_location); | |
77 | static bool do_line_change (cpp_reader *, const cpp_token *, | |
21ece9b2 | 78 | source_location, int); |
93c80368 | 79 | |
58fea6af ZW |
80 | /* Callback routines for the parser. Most of these are active only |
81 | in specific modes. */ | |
2f6e4e97 | 82 | static void cb_line_change (cpp_reader *, const cpp_token *, int); |
a281759f PB |
83 | static void cb_define (cpp_reader *, source_location, cpp_hashnode *); |
84 | static void cb_undef (cpp_reader *, source_location, cpp_hashnode *); | |
93d45d9e JM |
85 | static void cb_used_define (cpp_reader *, source_location, cpp_hashnode *); |
86 | static void cb_used_undef (cpp_reader *, source_location, cpp_hashnode *); | |
a281759f | 87 | static void cb_include (cpp_reader *, source_location, const unsigned char *, |
cbc43ae0 | 88 | const char *, int, const cpp_token **); |
a281759f PB |
89 | static void cb_ident (cpp_reader *, source_location, const cpp_string *); |
90 | static void cb_def_pragma (cpp_reader *, source_location); | |
c0d578e6 GK |
91 | static void cb_read_pch (cpp_reader *pfile, const char *name, |
92 | int fd, const char *orig_name); | |
93c80368 | 93 | |
aaf93206 NB |
94 | /* Preprocess and output. */ |
95 | void | |
2f6e4e97 | 96 | preprocess_file (cpp_reader *pfile) |
7f2935c7 | 97 | { |
9d10c9a9 NB |
98 | /* A successful cpp_read_main_file guarantees that we can call |
99 | cpp_scan_nooutput or cpp_get_token next. */ | |
6f3a2e23 | 100 | if (flag_no_output && pfile->buffer) |
6de8f7fc | 101 | { |
9d10c9a9 NB |
102 | /* Scan -included buffers, then the main file. */ |
103 | while (pfile->buffer->prev) | |
104 | cpp_scan_nooutput (pfile); | |
105 | cpp_scan_nooutput (pfile); | |
6de8f7fc | 106 | } |
9d10c9a9 NB |
107 | else if (cpp_get_options (pfile)->traditional) |
108 | scan_translation_unit_trad (pfile); | |
ccfc4c91 OW |
109 | else if (cpp_get_options (pfile)->directives_only |
110 | && !cpp_get_options (pfile)->preprocessed) | |
111 | scan_translation_unit_directives_only (pfile); | |
9d10c9a9 NB |
112 | else |
113 | scan_translation_unit (pfile); | |
114 | ||
115 | /* -dM command line option. Should this be elsewhere? */ | |
116 | if (flag_dump_macros == 'M') | |
117 | cpp_forall_identifiers (pfile, dump_macro, NULL); | |
6de8f7fc NB |
118 | |
119 | /* Flush any pending output. */ | |
63973df3 NB |
120 | if (print.printed) |
121 | putc ('\n', print.outf); | |
6de8f7fc NB |
122 | } |
123 | ||
620ef26c | 124 | /* Set up the callbacks as appropriate. */ |
9d10c9a9 | 125 | void |
2f6e4e97 | 126 | init_pp_output (FILE *out_stream) |
cf44ea52 | 127 | { |
9d10c9a9 NB |
128 | cpp_callbacks *cb = cpp_get_callbacks (parse_in); |
129 | ||
63973df3 | 130 | if (!flag_no_output) |
cf44ea52 | 131 | { |
f0581dc7 | 132 | cb->line_change = cb_line_change; |
c7544dd8 ZW |
133 | /* Don't emit #pragma or #ident directives if we are processing |
134 | assembly language; the assembler may choke on them. */ | |
9d10c9a9 | 135 | if (cpp_get_options (parse_in)->lang != CLK_ASM) |
c7544dd8 ZW |
136 | { |
137 | cb->ident = cb_ident; | |
138 | cb->def_pragma = cb_def_pragma; | |
139 | } | |
cf44ea52 NB |
140 | } |
141 | ||
63973df3 | 142 | if (flag_dump_includes) |
620ef26c | 143 | cb->include = cb_include; |
cf44ea52 | 144 | |
c0d578e6 GK |
145 | if (flag_pch_preprocess) |
146 | { | |
147 | cb->valid_pch = c_common_valid_pch; | |
148 | cb->read_pch = cb_read_pch; | |
149 | } | |
150 | ||
63973df3 | 151 | if (flag_dump_macros == 'N' || flag_dump_macros == 'D') |
cf44ea52 | 152 | { |
620ef26c NB |
153 | cb->define = cb_define; |
154 | cb->undef = cb_undef; | |
cf44ea52 | 155 | } |
9d10c9a9 | 156 | |
93d45d9e JM |
157 | if (flag_dump_macros == 'U') |
158 | { | |
159 | cb->before_define = dump_queued_macros; | |
160 | cb->used_define = cb_used_define; | |
161 | cb->used_undef = cb_used_undef; | |
162 | } | |
163 | ||
1f8d3e84 JJ |
164 | cb->has_attribute = c_common_has_attribute; |
165 | ||
1a456b49 NS |
166 | /* Initialize the print structure. */ |
167 | print.src_line = 1; | |
9d10c9a9 NB |
168 | print.printed = 0; |
169 | print.prev = 0; | |
9d10c9a9 | 170 | print.outf = out_stream; |
22234f56 | 171 | print.first_time = 1; |
22d17b1c | 172 | print.src_file = ""; |
f41373b6 | 173 | print.prev_was_system_token = false; |
cf44ea52 NB |
174 | } |
175 | ||
644eddaa NB |
176 | /* Writes out the preprocessed file, handling spacing and paste |
177 | avoidance issues. */ | |
93c80368 | 178 | static void |
2f6e4e97 | 179 | scan_translation_unit (cpp_reader *pfile) |
93c80368 | 180 | { |
4ed5bcfb | 181 | bool avoid_paste = false; |
21ece9b2 JJ |
182 | bool do_line_adjustments |
183 | = cpp_get_options (parse_in)->lang != CLK_ASM | |
184 | && !flag_no_line_commands; | |
185 | bool in_pragma = false; | |
f41373b6 | 186 | bool line_marker_emitted = false; |
58fea6af | 187 | |
63973df3 | 188 | print.source = NULL; |
4ed5bcfb | 189 | for (;;) |
93c80368 | 190 | { |
21ece9b2 JJ |
191 | source_location loc; |
192 | const cpp_token *token = cpp_get_token_with_location (pfile, &loc); | |
4ed5bcfb NB |
193 | |
194 | if (token->type == CPP_PADDING) | |
195 | { | |
196 | avoid_paste = true; | |
63973df3 NB |
197 | if (print.source == NULL |
198 | || (!(print.source->flags & PREV_WHITE) | |
0c34509f | 199 | && token->val.source == NULL)) |
63973df3 | 200 | print.source = token->val.source; |
4ed5bcfb NB |
201 | continue; |
202 | } | |
93c80368 | 203 | |
ef6e958a NB |
204 | if (token->type == CPP_EOF) |
205 | break; | |
93c80368 | 206 | |
4ed5bcfb NB |
207 | /* Subtle logic to output a space if and only if necessary. */ |
208 | if (avoid_paste) | |
209 | { | |
46427374 | 210 | int src_line = LOCATION_LINE (loc); |
21ece9b2 | 211 | |
63973df3 NB |
212 | if (print.source == NULL) |
213 | print.source = token; | |
21ece9b2 JJ |
214 | |
215 | if (src_line != print.src_line | |
216 | && do_line_adjustments | |
217 | && !in_pragma) | |
218 | { | |
f41373b6 | 219 | line_marker_emitted = do_line_change (pfile, token, loc, false); |
21ece9b2 JJ |
220 | putc (' ', print.outf); |
221 | } | |
222 | else if (print.source->flags & PREV_WHITE | |
223 | || (print.prev | |
224 | && cpp_avoid_paste (pfile, print.prev, token)) | |
225 | || (print.prev == NULL && token->type == CPP_HASH)) | |
63973df3 | 226 | putc (' ', print.outf); |
4ed5bcfb NB |
227 | } |
228 | else if (token->flags & PREV_WHITE) | |
21ece9b2 | 229 | { |
46427374 | 230 | int src_line = LOCATION_LINE (loc); |
21ece9b2 JJ |
231 | |
232 | if (src_line != print.src_line | |
233 | && do_line_adjustments | |
234 | && !in_pragma) | |
f41373b6 | 235 | line_marker_emitted = do_line_change (pfile, token, loc, false); |
21ece9b2 JJ |
236 | putc (' ', print.outf); |
237 | } | |
ef6e958a | 238 | |
4ed5bcfb | 239 | avoid_paste = false; |
63973df3 NB |
240 | print.source = NULL; |
241 | print.prev = token; | |
a25a8f3b JJ |
242 | if (token->type == CPP_PRAGMA) |
243 | { | |
244 | const char *space; | |
245 | const char *name; | |
246 | ||
f41373b6 | 247 | line_marker_emitted = maybe_print_line (token->src_loc); |
a25a8f3b JJ |
248 | fputs ("#pragma ", print.outf); |
249 | c_pp_lookup_pragma (token->val.pragma, &space, &name); | |
250 | if (space) | |
251 | fprintf (print.outf, "%s %s", space, name); | |
252 | else | |
253 | fprintf (print.outf, "%s", name); | |
254 | print.printed = 1; | |
21ece9b2 | 255 | in_pragma = true; |
a25a8f3b JJ |
256 | } |
257 | else if (token->type == CPP_PRAGMA_EOL) | |
21ece9b2 JJ |
258 | { |
259 | maybe_print_line (token->src_loc); | |
260 | in_pragma = false; | |
261 | } | |
a25a8f3b | 262 | else |
847e697a TT |
263 | { |
264 | if (cpp_get_options (parse_in)->debug) | |
265 | linemap_dump_location (line_table, token->src_loc, | |
266 | print.outf); | |
f41373b6 DS |
267 | |
268 | if (do_line_adjustments | |
269 | && !in_pragma | |
270 | && !line_marker_emitted | |
271 | && print.prev_was_system_token != !!in_system_header_at(loc) | |
272 | && !is_location_from_builtin_token (loc)) | |
273 | /* The system-ness of this token is different from the one | |
274 | of the previous token. Let's emit a line change to | |
275 | mark the new system-ness before we emit the token. */ | |
276 | { | |
277 | do_line_change (pfile, token, loc, false); | |
278 | print.prev_was_system_token = !!in_system_header_at(loc); | |
279 | } | |
847e697a | 280 | cpp_output_token (token, print.outf); |
f41373b6 | 281 | line_marker_emitted = false; |
847e697a | 282 | } |
4ed5bcfb | 283 | |
c26302d5 JJ |
284 | /* CPP_COMMENT tokens and raw-string literal tokens can |
285 | have embedded new-line characters. Rather than enumerating | |
286 | all the possible token types just check if token uses | |
287 | val.str union member. */ | |
288 | if (cpp_token_val_index (token) == CPP_TOKEN_FLD_STR) | |
63973df3 | 289 | account_for_newlines (token->val.str.text, token->val.str.len); |
93c80368 | 290 | } |
93c80368 NB |
291 | } |
292 | ||
ccfc4c91 OW |
293 | static void |
294 | print_lines_directives_only (int lines, const void *buf, size_t size) | |
295 | { | |
296 | print.src_line += lines; | |
297 | fwrite (buf, 1, size, print.outf); | |
298 | } | |
299 | ||
300 | /* Writes out the preprocessed file, handling spacing and paste | |
301 | avoidance issues. */ | |
302 | static void | |
303 | scan_translation_unit_directives_only (cpp_reader *pfile) | |
304 | { | |
305 | struct _cpp_dir_only_callbacks cb; | |
306 | ||
307 | cb.print_lines = print_lines_directives_only; | |
f41373b6 | 308 | cb.maybe_print_line = (void (*) (source_location)) maybe_print_line; |
ccfc4c91 OW |
309 | |
310 | _cpp_preprocess_dir_only (pfile, &cb); | |
311 | } | |
312 | ||
12f9df4e | 313 | /* Adjust print.src_line for newlines embedded in output. */ |
dfbf62ec | 314 | static void |
43839642 | 315 | account_for_newlines (const unsigned char *str, size_t len) |
dfbf62ec | 316 | { |
b66377c1 NB |
317 | while (len--) |
318 | if (*str++ == '\n') | |
12f9df4e | 319 | print.src_line++; |
dfbf62ec NB |
320 | } |
321 | ||
1a76916c | 322 | /* Writes out a traditionally preprocessed file. */ |
afb03408 | 323 | static void |
2f6e4e97 | 324 | scan_translation_unit_trad (cpp_reader *pfile) |
afb03408 | 325 | { |
38800fe8 | 326 | while (_cpp_read_logical_line_trad (pfile)) |
afb03408 | 327 | { |
38800fe8 | 328 | size_t len = pfile->out.cur - pfile->out.base; |
12f9df4e | 329 | maybe_print_line (pfile->out.first_line); |
63973df3 NB |
330 | fwrite (pfile->out.base, 1, len, print.outf); |
331 | print.printed = 1; | |
b66377c1 | 332 | if (!CPP_OPTION (pfile, discard_comments)) |
63973df3 | 333 | account_for_newlines (pfile->out.base, len); |
afb03408 | 334 | } |
afb03408 NB |
335 | } |
336 | ||
67821e3a NB |
337 | /* If the token read on logical line LINE needs to be output on a |
338 | different line to the current one, output the required newlines or | |
f41373b6 DS |
339 | a line marker. If a line marker was emitted, return TRUE otherwise |
340 | return FALSE. */ | |
847e697a | 341 | |
f41373b6 | 342 | static bool |
847e697a | 343 | maybe_print_line_1 (source_location src_loc, FILE *stream) |
93c80368 | 344 | { |
f41373b6 | 345 | bool emitted_line_marker = false; |
46427374 TT |
346 | int src_line = LOCATION_LINE (src_loc); |
347 | const char *src_file = LOCATION_FILE (src_loc); | |
348 | ||
67821e3a | 349 | /* End the previous line of text. */ |
63973df3 | 350 | if (print.printed) |
93c80368 | 351 | { |
847e697a | 352 | putc ('\n', stream); |
12f9df4e | 353 | print.src_line++; |
63973df3 | 354 | print.printed = 0; |
93c80368 NB |
355 | } |
356 | ||
304dfbe3 RG |
357 | if (!flag_no_line_commands |
358 | && src_line >= print.src_line | |
22d17b1c | 359 | && src_line < print.src_line + 8 |
46427374 | 360 | && strcmp (src_file, print.src_file) == 0) |
3cab4133 | 361 | { |
12f9df4e | 362 | while (src_line > print.src_line) |
93c80368 | 363 | { |
847e697a | 364 | putc ('\n', stream); |
12f9df4e | 365 | print.src_line++; |
93c80368 NB |
366 | } |
367 | } | |
368 | else | |
f41373b6 | 369 | emitted_line_marker = print_line_1 (src_loc, "", stream); |
847e697a | 370 | |
f41373b6 | 371 | return emitted_line_marker; |
847e697a TT |
372 | } |
373 | ||
374 | /* If the token read on logical line LINE needs to be output on a | |
375 | different line to the current one, output the required newlines or | |
f41373b6 DS |
376 | a line marker. If a line marker was emitted, return TRUE otherwise |
377 | return FALSE. */ | |
847e697a | 378 | |
f41373b6 | 379 | static bool |
847e697a TT |
380 | maybe_print_line (source_location src_loc) |
381 | { | |
382 | if (cpp_get_options (parse_in)->debug) | |
383 | linemap_dump_location (line_table, src_loc, | |
384 | print.outf); | |
f41373b6 | 385 | return maybe_print_line_1 (src_loc, print.outf); |
93c80368 NB |
386 | } |
387 | ||
47d89cf3 | 388 | /* Output a line marker for logical line LINE. Special flags are "1" |
f41373b6 DS |
389 | or "2" indicating entering or leaving a file. If the line marker |
390 | was effectively emitted, return TRUE otherwise return FALSE. */ | |
847e697a | 391 | |
f41373b6 | 392 | static bool |
847e697a | 393 | print_line_1 (source_location src_loc, const char *special_flags, FILE *stream) |
93c80368 | 394 | { |
f41373b6 DS |
395 | bool emitted_line_marker = false; |
396 | ||
93c80368 | 397 | /* End any previous line of text. */ |
63973df3 | 398 | if (print.printed) |
847e697a | 399 | putc ('\n', stream); |
63973df3 | 400 | print.printed = 0; |
93c80368 | 401 | |
63973df3 | 402 | if (!flag_no_line_commands) |
47d89cf3 | 403 | { |
46427374 TT |
404 | const char *file_path = LOCATION_FILE (src_loc); |
405 | int sysp; | |
406 | size_t to_file_len = strlen (file_path); | |
cceb1885 GDR |
407 | unsigned char *to_file_quoted = |
408 | (unsigned char *) alloca (to_file_len * 4 + 1); | |
dcc229e5 | 409 | unsigned char *p; |
df383483 | 410 | |
46427374 TT |
411 | print.src_line = LOCATION_LINE (src_loc); |
412 | print.src_file = file_path; | |
12f9df4e | 413 | |
dcc229e5 ZW |
414 | /* cpp_quote_string does not nul-terminate, so we have to do it |
415 | ourselves. */ | |
416 | p = cpp_quote_string (to_file_quoted, | |
46427374 TT |
417 | (const unsigned char *) file_path, |
418 | to_file_len); | |
dcc229e5 | 419 | *p = '\0'; |
847e697a | 420 | fprintf (stream, "# %u \"%s\"%s", |
d2c979ef | 421 | print.src_line == 0 ? 1 : print.src_line, |
a3737481 | 422 | to_file_quoted, special_flags); |
47d89cf3 | 423 | |
46427374 TT |
424 | sysp = in_system_header_at (src_loc); |
425 | if (sysp == 2) | |
847e697a | 426 | fputs (" 3 4", stream); |
46427374 | 427 | else if (sysp == 1) |
847e697a | 428 | fputs (" 3", stream); |
47d89cf3 | 429 | |
847e697a | 430 | putc ('\n', stream); |
f41373b6 | 431 | emitted_line_marker = true; |
47d89cf3 | 432 | } |
f41373b6 DS |
433 | |
434 | return emitted_line_marker; | |
93c80368 NB |
435 | } |
436 | ||
847e697a | 437 | /* Output a line marker for logical line LINE. Special flags are "1" |
f41373b6 DS |
438 | or "2" indicating entering or leaving a file. Return TRUE if a |
439 | line marker was effectively emitted, FALSE otherwise. */ | |
847e697a | 440 | |
f41373b6 | 441 | static bool |
847e697a TT |
442 | print_line (source_location src_loc, const char *special_flags) |
443 | { | |
444 | if (cpp_get_options (parse_in)->debug) | |
445 | linemap_dump_location (line_table, src_loc, | |
446 | print.outf); | |
f41373b6 | 447 | return print_line_1 (src_loc, special_flags, print.outf); |
847e697a TT |
448 | } |
449 | ||
f41373b6 DS |
450 | /* Helper function for cb_line_change and scan_translation_unit. |
451 | Return TRUE if a line marker is emitted, FALSE otherwise. */ | |
452 | static bool | |
21ece9b2 JJ |
453 | do_line_change (cpp_reader *pfile, const cpp_token *token, |
454 | source_location src_loc, int parsing_args) | |
97293897 | 455 | { |
f41373b6 | 456 | bool emitted_line_marker = false; |
93d45d9e JM |
457 | if (define_queue || undef_queue) |
458 | dump_queued_macros (pfile); | |
459 | ||
7b9a5a66 | 460 | if (token->type == CPP_EOF || parsing_args) |
f41373b6 | 461 | return false; |
97293897 | 462 | |
f41373b6 | 463 | emitted_line_marker = maybe_print_line (src_loc); |
63973df3 NB |
464 | print.prev = 0; |
465 | print.source = 0; | |
97293897 NB |
466 | |
467 | /* Supply enough spaces to put this token in its original column, | |
468 | one space per column greater than 2, since scan_translation_unit | |
469 | will provide a space if PREV_WHITE. Don't bother trying to | |
470 | reconstruct tabs; we can't get it right in general, and nothing | |
471 | ought to care. Some things do care; the fault lies with them. */ | |
278c4662 | 472 | if (!CPP_OPTION (pfile, traditional)) |
97293897 | 473 | { |
46427374 | 474 | int spaces = LOCATION_COLUMN (src_loc) - 2; |
63973df3 | 475 | print.printed = 1; |
97293897 | 476 | |
12f9df4e PB |
477 | while (-- spaces >= 0) |
478 | putc (' ', print.outf); | |
97293897 | 479 | } |
f41373b6 DS |
480 | |
481 | return emitted_line_marker; | |
97293897 | 482 | } |
93c80368 | 483 | |
21ece9b2 JJ |
484 | /* Called when a line of output is started. TOKEN is the first token |
485 | of the line, and at end of file will be CPP_EOF. */ | |
486 | static void | |
487 | cb_line_change (cpp_reader *pfile, const cpp_token *token, | |
488 | int parsing_args) | |
489 | { | |
490 | do_line_change (pfile, token, token->src_loc, parsing_args); | |
491 | } | |
492 | ||
93c80368 | 493 | static void |
a281759f | 494 | cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, |
2f6e4e97 | 495 | const cpp_string *str) |
58fea6af | 496 | { |
12f9df4e | 497 | maybe_print_line (line); |
14788775 | 498 | fprintf (print.outf, "#ident %s\n", str->text); |
12f9df4e | 499 | print.src_line++; |
58fea6af ZW |
500 | } |
501 | ||
502 | static void | |
a281759f | 503 | cb_define (cpp_reader *pfile, source_location line, cpp_hashnode *node) |
58fea6af | 504 | { |
46427374 TT |
505 | const struct line_map *map; |
506 | ||
12f9df4e | 507 | maybe_print_line (line); |
63973df3 | 508 | fputs ("#define ", print.outf); |
93c80368 | 509 | |
63973df3 NB |
510 | /* 'D' is whole definition; 'N' is name only. */ |
511 | if (flag_dump_macros == 'D') | |
a3737481 | 512 | fputs ((const char *) cpp_macro_definition (pfile, node), |
63973df3 | 513 | print.outf); |
7096171b | 514 | else |
63973df3 | 515 | fputs ((const char *) NODE_NAME (node), print.outf); |
93c80368 | 516 | |
63973df3 | 517 | putc ('\n', print.outf); |
46427374 TT |
518 | linemap_resolve_location (line_table, line, |
519 | LRK_MACRO_DEFINITION_LOCATION, | |
520 | &map); | |
521 | if (LINEMAP_LINE (map) != 0) | |
112598f4 | 522 | print.src_line++; |
58fea6af ZW |
523 | } |
524 | ||
525 | static void | |
12f9df4e | 526 | cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, |
2f6e4e97 | 527 | cpp_hashnode *node) |
58fea6af | 528 | { |
12f9df4e | 529 | maybe_print_line (line); |
63973df3 | 530 | fprintf (print.outf, "#undef %s\n", NODE_NAME (node)); |
12f9df4e | 531 | print.src_line++; |
58fea6af ZW |
532 | } |
533 | ||
93d45d9e JM |
534 | static void |
535 | cb_used_define (cpp_reader *pfile, source_location line ATTRIBUTE_UNUSED, | |
536 | cpp_hashnode *node) | |
537 | { | |
538 | macro_queue *q; | |
c9891b70 EB |
539 | if (node->flags & NODE_BUILTIN) |
540 | return; | |
93d45d9e JM |
541 | q = XNEW (macro_queue); |
542 | q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node)); | |
543 | q->next = define_queue; | |
544 | define_queue = q; | |
545 | } | |
546 | ||
547 | static void | |
548 | cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, | |
549 | source_location line ATTRIBUTE_UNUSED, | |
550 | cpp_hashnode *node) | |
551 | { | |
552 | macro_queue *q; | |
553 | q = XNEW (macro_queue); | |
554 | q->macro = xstrdup ((const char *) NODE_NAME (node)); | |
555 | q->next = undef_queue; | |
556 | undef_queue = q; | |
557 | } | |
558 | ||
559 | static void | |
560 | dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED) | |
561 | { | |
562 | macro_queue *q; | |
563 | ||
564 | /* End the previous line of text. */ | |
565 | if (print.printed) | |
566 | { | |
567 | putc ('\n', print.outf); | |
568 | print.src_line++; | |
569 | print.printed = 0; | |
570 | } | |
571 | ||
572 | for (q = define_queue; q;) | |
573 | { | |
574 | macro_queue *oq; | |
575 | fputs ("#define ", print.outf); | |
576 | fputs (q->macro, print.outf); | |
577 | putc ('\n', print.outf); | |
578 | print.src_line++; | |
579 | oq = q; | |
580 | q = q->next; | |
581 | free (oq->macro); | |
582 | free (oq); | |
583 | } | |
584 | define_queue = NULL; | |
585 | for (q = undef_queue; q;) | |
586 | { | |
587 | macro_queue *oq; | |
588 | fprintf (print.outf, "#undef %s\n", q->macro); | |
589 | print.src_line++; | |
590 | oq = q; | |
591 | q = q->next; | |
592 | free (oq->macro); | |
593 | free (oq); | |
594 | } | |
595 | undef_queue = NULL; | |
596 | } | |
597 | ||
58fea6af | 598 | static void |
12f9df4e | 599 | cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, |
cbc43ae0 ILT |
600 | const unsigned char *dir, const char *header, int angle_brackets, |
601 | const cpp_token **comments) | |
58fea6af | 602 | { |
12f9df4e | 603 | maybe_print_line (line); |
74eb4b3e | 604 | if (angle_brackets) |
cbc43ae0 | 605 | fprintf (print.outf, "#%s <%s>", dir, header); |
74eb4b3e | 606 | else |
cbc43ae0 ILT |
607 | fprintf (print.outf, "#%s \"%s\"", dir, header); |
608 | ||
609 | if (comments != NULL) | |
610 | { | |
611 | while (*comments != NULL) | |
612 | { | |
613 | if ((*comments)->flags & PREV_WHITE) | |
614 | putc (' ', print.outf); | |
615 | cpp_output_token (*comments, print.outf); | |
616 | ++comments; | |
617 | } | |
618 | } | |
619 | ||
620 | putc ('\n', print.outf); | |
12f9df4e | 621 | print.src_line++; |
58fea6af ZW |
622 | } |
623 | ||
8e9ea4d7 | 624 | /* Callback called when -fworking-director and -E to emit working |
fb0840fc | 625 | directory in cpp output file. */ |
8e9ea4d7 PB |
626 | |
627 | void | |
628 | pp_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir) | |
629 | { | |
630 | size_t to_file_len = strlen (dir); | |
cceb1885 GDR |
631 | unsigned char *to_file_quoted = |
632 | (unsigned char *) alloca (to_file_len * 4 + 1); | |
8e9ea4d7 PB |
633 | unsigned char *p; |
634 | ||
9ac97460 | 635 | /* cpp_quote_string does not nul-terminate, so we have to do it ourselves. */ |
5f754896 | 636 | p = cpp_quote_string (to_file_quoted, (const unsigned char *) dir, to_file_len); |
8e9ea4d7 PB |
637 | *p = '\0'; |
638 | fprintf (print.outf, "# 1 \"%s//\"\n", to_file_quoted); | |
639 | } | |
640 | ||
42dcba34 | 641 | /* The file name, line number or system header flags have changed, as |
12f9df4e | 642 | described in MAP. */ |
42dcba34 | 643 | |
23345bbb | 644 | void |
2f6e4e97 | 645 | pp_file_change (const struct line_map *map) |
58fea6af | 646 | { |
d7bc7a98 | 647 | const char *flags = ""; |
58fea6af | 648 | |
f9c65623 | 649 | if (flag_no_line_commands) |
23345bbb NB |
650 | return; |
651 | ||
f4b2bde7 | 652 | if (map != NULL) |
d7bc7a98 | 653 | { |
148e4216 | 654 | input_location = map->start_location; |
22234f56 | 655 | if (print.first_time) |
f4b2bde7 PB |
656 | { |
657 | /* Avoid printing foo.i when the main file is foo.c. */ | |
658 | if (!cpp_get_options (parse_in)->preprocessed) | |
12f9df4e | 659 | print_line (map->start_location, flags); |
22234f56 | 660 | print.first_time = 0; |
f4b2bde7 PB |
661 | } |
662 | else | |
663 | { | |
664 | /* Bring current file to correct line when entering a new file. */ | |
665 | if (map->reason == LC_ENTER) | |
12f9df4e | 666 | { |
5ffeb913 | 667 | const struct line_map *from = INCLUDED_FROM (line_table, map); |
12f9df4e PB |
668 | maybe_print_line (LAST_SOURCE_LINE_LOCATION (from)); |
669 | } | |
f4b2bde7 PB |
670 | if (map->reason == LC_ENTER) |
671 | flags = " 1"; | |
672 | else if (map->reason == LC_LEAVE) | |
673 | flags = " 2"; | |
12f9df4e | 674 | print_line (map->start_location, flags); |
f4b2bde7 | 675 | } |
ad2a084d | 676 | } |
9ec7291f ZW |
677 | } |
678 | ||
bb74c963 | 679 | /* Copy a #pragma directive to the preprocessed output. */ |
58fea6af | 680 | static void |
a281759f | 681 | cb_def_pragma (cpp_reader *pfile, source_location line) |
58fea6af | 682 | { |
12f9df4e | 683 | maybe_print_line (line); |
63973df3 NB |
684 | fputs ("#pragma ", print.outf); |
685 | cpp_output_line (pfile, print.outf); | |
12f9df4e | 686 | print.src_line++; |
58fea6af ZW |
687 | } |
688 | ||
58fea6af ZW |
689 | /* Dump out the hash table. */ |
690 | static int | |
2f6e4e97 | 691 | dump_macro (cpp_reader *pfile, cpp_hashnode *node, void *v ATTRIBUTE_UNUSED) |
58fea6af | 692 | { |
93c80368 | 693 | if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN)) |
58fea6af | 694 | { |
63973df3 | 695 | fputs ("#define ", print.outf); |
a3737481 | 696 | fputs ((const char *) cpp_macro_definition (pfile, node), |
63973df3 NB |
697 | print.outf); |
698 | putc ('\n', print.outf); | |
12f9df4e | 699 | print.src_line++; |
58fea6af ZW |
700 | } |
701 | ||
702 | return 1; | |
703 | } | |
c0d578e6 GK |
704 | |
705 | /* Load in the PCH file NAME, open on FD. It was originally searched for | |
706 | by ORIG_NAME. Also, print out a #include command so that the PCH | |
707 | file can be loaded when the preprocessed output is compiled. */ | |
708 | ||
709 | static void | |
710 | cb_read_pch (cpp_reader *pfile, const char *name, | |
711 | int fd, const char *orig_name ATTRIBUTE_UNUSED) | |
712 | { | |
713 | c_common_read_pch (pfile, name, fd, orig_name); | |
c22cacf3 | 714 | |
c0d578e6 GK |
715 | fprintf (print.outf, "#pragma GCC pch_preprocess \"%s\"\n", name); |
716 | print.src_line++; | |
717 | } |