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aa6db498 | 1 | /* Various declarations for language-independent pretty-print subroutines. |
8c4c00c1 | 2 | Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
aa6db498 | 3 | Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net> |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 9 | Software Foundation; either version 3, or (at your option) any later |
aa6db498 | 10 | version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
aa6db498 | 20 | |
21 | #include "config.h" | |
22 | #undef FLOAT /* This is for hpux. They should change hpux. */ | |
23 | #undef FFS /* Some systems define this in param.h. */ | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
89e7e005 | 26 | #include "intl.h" |
aa6db498 | 27 | #include "pretty-print.h" |
583fa9e0 | 28 | #include "tree.h" |
aa6db498 | 29 | |
30 | #define obstack_chunk_alloc xmalloc | |
31 | #define obstack_chunk_free free | |
32 | ||
33 | /* A pointer to the formatted diagnostic message. */ | |
34 | #define pp_formatted_text_data(PP) \ | |
c907c5b1 | 35 | ((const char *) obstack_base (pp_base (PP)->buffer->obstack)) |
aa6db498 | 36 | |
37 | /* Format an integer given by va_arg (ARG, type-specifier T) where | |
38 | type-specifier is a precision modifier as indicated by PREC. F is | |
39 | a string used to construct the appropriate format-specifier. */ | |
40 | #define pp_integer_with_precision(PP, ARG, PREC, T, F) \ | |
41 | do \ | |
42 | switch (PREC) \ | |
43 | { \ | |
44 | case 0: \ | |
45 | pp_scalar (PP, "%" F, va_arg (ARG, T)); \ | |
46 | break; \ | |
47 | \ | |
48 | case 1: \ | |
49 | pp_scalar (PP, "%l" F, va_arg (ARG, long T)); \ | |
50 | break; \ | |
51 | \ | |
52 | case 2: \ | |
53 | pp_scalar (PP, "%ll" F, va_arg (ARG, long long T)); \ | |
54 | break; \ | |
55 | \ | |
56 | default: \ | |
57 | break; \ | |
58 | } \ | |
59 | while (0) | |
60 | ||
61 | ||
62 | /* Subroutine of pp_set_maximum_length. Set up PRETTY-PRINTER's | |
63 | internal maximum characters per line. */ | |
64 | static void | |
65 | pp_set_real_maximum_length (pretty_printer *pp) | |
66 | { | |
67 | /* If we're told not to wrap lines then do the obvious thing. In case | |
68 | we'll emit prefix only once per message, it is appropriate | |
69 | not to increase unnecessarily the line-length cut-off. */ | |
70 | if (!pp_is_wrapping_line (pp) | |
71 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_ONCE | |
72 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_NEVER) | |
73 | pp->maximum_length = pp_line_cutoff (pp); | |
74 | else | |
75 | { | |
76 | int prefix_length = pp->prefix ? strlen (pp->prefix) : 0; | |
77 | /* If the prefix is ridiculously too long, output at least | |
78 | 32 characters. */ | |
79 | if (pp_line_cutoff (pp) - prefix_length < 32) | |
80 | pp->maximum_length = pp_line_cutoff (pp) + 32; | |
81 | else | |
82 | pp->maximum_length = pp_line_cutoff (pp); | |
83 | } | |
84 | } | |
85 | ||
86 | /* Clear PRETTY-PRINTER's output state. */ | |
87 | static inline void | |
88 | pp_clear_state (pretty_printer *pp) | |
89 | { | |
90 | pp->emitted_prefix = false; | |
91 | pp_indentation (pp) = 0; | |
92 | } | |
93 | ||
aa6db498 | 94 | /* Flush the formatted text of PRETTY-PRINTER onto the attached stream. */ |
4ee9c684 | 95 | void |
aa6db498 | 96 | pp_write_text_to_stream (pretty_printer *pp) |
97 | { | |
98 | const char *text = pp_formatted_text (pp); | |
99 | fputs (text, pp->buffer->stream); | |
100 | pp_clear_output_area (pp); | |
101 | } | |
102 | ||
103 | /* Wrap a text delimited by START and END into PRETTY-PRINTER. */ | |
104 | static void | |
105 | pp_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
106 | { | |
107 | bool wrapping_line = pp_is_wrapping_line (pp); | |
108 | ||
109 | while (start != end) | |
110 | { | |
111 | /* Dump anything bordered by whitespaces. */ | |
112 | { | |
113 | const char *p = start; | |
114 | while (p != end && !ISBLANK (*p) && *p != '\n') | |
115 | ++p; | |
116 | if (wrapping_line | |
117 | && p - start >= pp_remaining_character_count_for_line (pp)) | |
118 | pp_newline (pp); | |
119 | pp_append_text (pp, start, p); | |
120 | start = p; | |
121 | } | |
122 | ||
123 | if (start != end && ISBLANK (*start)) | |
124 | { | |
125 | pp_space (pp); | |
126 | ++start; | |
127 | } | |
128 | if (start != end && *start == '\n') | |
129 | { | |
130 | pp_newline (pp); | |
131 | ++start; | |
132 | } | |
133 | } | |
134 | } | |
135 | ||
136 | /* Same as pp_wrap_text but wrap text only when in line-wrapping mode. */ | |
137 | static inline void | |
138 | pp_maybe_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
139 | { | |
140 | if (pp_is_wrapping_line (pp)) | |
141 | pp_wrap_text (pp, start, end); | |
142 | else | |
143 | pp_append_text (pp, start, end); | |
144 | } | |
145 | ||
146 | /* Append to the output area of PRETTY-PRINTER a string specified by its | |
147 | STARTing character and LENGTH. */ | |
148 | static inline void | |
149 | pp_append_r (pretty_printer *pp, const char *start, int length) | |
150 | { | |
c907c5b1 | 151 | obstack_grow (pp->buffer->obstack, start, length); |
aa6db498 | 152 | pp->buffer->line_length += length; |
153 | } | |
154 | ||
bfdec0d1 | 155 | /* Insert enough spaces into the output area of PRETTY-PRINTER to bring |
156 | the column position to the current indentation level, assuming that a | |
157 | newline has just been written to the buffer. */ | |
158 | void | |
159 | pp_base_indent (pretty_printer *pp) | |
160 | { | |
161 | int n = pp_indentation (pp); | |
162 | int i; | |
163 | ||
164 | for (i = 0; i < n; ++i) | |
165 | pp_space (pp); | |
166 | } | |
167 | ||
c907c5b1 | 168 | /* The following format specifiers are recognized as being client independent: |
aa6db498 | 169 | %d, %i: (signed) integer in base ten. |
170 | %u: unsigned integer in base ten. | |
171 | %o: unsigned integer in base eight. | |
172 | %x: unsigned integer in base sixteen. | |
173 | %ld, %li, %lo, %lu, %lx: long versions of the above. | |
174 | %lld, %lli, %llo, %llu, %llx: long long versions. | |
175 | %wd, %wi, %wo, %wu, %wx: HOST_WIDE_INT versions. | |
176 | %c: character. | |
177 | %s: string. | |
178 | %p: pointer. | |
179 | %m: strerror(text->err_no) - does not consume a value from args_ptr. | |
89e7e005 | 180 | %%: '%'. |
c936ffc6 | 181 | %<: opening quote. |
182 | %>: closing quote. | |
183 | %': apostrophe (should only be used in untranslated messages; | |
184 | translations should use appropriate punctuation directly). | |
c907c5b1 | 185 | %.*s: a substring the length of which is specified by an argument |
186 | integer. | |
187 | %Ns: likewise, but length specified as constant in the format string. | |
89e7e005 | 188 | %H: location_t. |
c907c5b1 | 189 | %J: a decl tree, from which DECL_SOURCE_LOCATION will be recorded. |
b8c23db3 | 190 | %K: a statement, from which EXPR_LOCATION and TREE_BLOCK will be recorded. |
c907c5b1 | 191 | Flag 'q': quote formatted text (must come immediately after '%'). |
192 | ||
193 | Arguments can be used sequentially, or through %N$ resp. *N$ | |
194 | notation Nth argument after the format string. If %N$ / *N$ | |
195 | notation is used, it must be used for all arguments, except %m, %%, | |
196 | %<, %> and %', which may not have a number, as they do not consume | |
197 | an argument. When %M$.*N$s is used, M must be N + 1. (This may | |
198 | also be written %M$.*s, provided N is not otherwise used.) The | |
199 | format string must have conversion specifiers with argument numbers | |
200 | 1 up to highest argument; each argument may only be used once. | |
201 | A format string can have at most 30 arguments. */ | |
202 | ||
203 | /* Formatting phases 1 and 2: render TEXT->format_spec plus | |
204 | TEXT->args_ptr into a series of chunks in PP->buffer->args[]. | |
205 | Phase 3 is in pp_base_format_text. */ | |
206 | ||
aa6db498 | 207 | void |
c907c5b1 | 208 | pp_base_format (pretty_printer *pp, text_info *text) |
aa6db498 | 209 | { |
c907c5b1 | 210 | output_buffer *buffer = pp->buffer; |
211 | const char *p; | |
212 | const char **args; | |
213 | struct chunk_info *new_chunk_array; | |
214 | ||
215 | unsigned int curarg = 0, chunk = 0, argno; | |
216 | pp_wrapping_mode_t old_wrapping_mode; | |
217 | bool any_unnumbered = false, any_numbered = false; | |
218 | const char **formatters[PP_NL_ARGMAX]; | |
219 | ||
220 | /* Allocate a new chunk structure. */ | |
221 | new_chunk_array = XOBNEW (&buffer->chunk_obstack, struct chunk_info); | |
222 | new_chunk_array->prev = buffer->cur_chunk_array; | |
223 | buffer->cur_chunk_array = new_chunk_array; | |
224 | args = new_chunk_array->args; | |
225 | ||
226 | /* Formatting phase 1: split up TEXT->format_spec into chunks in | |
227 | PP->buffer->args[]. Even-numbered chunks are to be output | |
228 | verbatim, odd-numbered chunks are format specifiers. | |
229 | %m, %%, %<, %>, and %' are replaced with the appropriate text at | |
230 | this point. */ | |
231 | ||
232 | memset (formatters, 0, sizeof formatters); | |
233 | ||
234 | for (p = text->format_spec; *p; ) | |
aa6db498 | 235 | { |
c907c5b1 | 236 | while (*p != '\0' && *p != '%') |
237 | { | |
238 | obstack_1grow (&buffer->chunk_obstack, *p); | |
239 | p++; | |
240 | } | |
aa6db498 | 241 | |
c907c5b1 | 242 | if (*p == '\0') |
243 | break; | |
244 | ||
245 | switch (*++p) | |
246 | { | |
247 | case '\0': | |
248 | gcc_unreachable (); | |
249 | ||
250 | case '%': | |
251 | obstack_1grow (&buffer->chunk_obstack, '%'); | |
252 | p++; | |
253 | continue; | |
aa6db498 | 254 | |
c907c5b1 | 255 | case '<': |
256 | obstack_grow (&buffer->chunk_obstack, | |
257 | open_quote, strlen (open_quote)); | |
258 | p++; | |
259 | continue; | |
260 | ||
261 | case '>': | |
262 | case '\'': | |
263 | obstack_grow (&buffer->chunk_obstack, | |
cc6b52a6 | 264 | close_quote, strlen (close_quote)); |
c907c5b1 | 265 | p++; |
266 | continue; | |
267 | ||
268 | case 'm': | |
269 | { | |
270 | const char *errstr = xstrerror (text->err_no); | |
271 | obstack_grow (&buffer->chunk_obstack, errstr, strlen (errstr)); | |
272 | } | |
273 | p++; | |
274 | continue; | |
275 | ||
276 | default: | |
277 | /* Handled in phase 2. Terminate the plain chunk here. */ | |
278 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
279 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
280 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
281 | break; | |
282 | } | |
283 | ||
284 | if (ISDIGIT (*p)) | |
285 | { | |
286 | char *end; | |
287 | argno = strtoul (p, &end, 10) - 1; | |
288 | p = end; | |
289 | gcc_assert (*p == '$'); | |
290 | p++; | |
291 | ||
292 | any_numbered = true; | |
293 | gcc_assert (!any_unnumbered); | |
294 | } | |
295 | else | |
296 | { | |
297 | argno = curarg++; | |
298 | any_unnumbered = true; | |
299 | gcc_assert (!any_numbered); | |
300 | } | |
301 | gcc_assert (argno < PP_NL_ARGMAX); | |
302 | gcc_assert (!formatters[argno]); | |
303 | formatters[argno] = &args[chunk]; | |
304 | do | |
305 | { | |
306 | obstack_1grow (&buffer->chunk_obstack, *p); | |
307 | p++; | |
308 | } | |
309 | while (strchr ("qwl+#", p[-1])); | |
310 | ||
311 | if (p[-1] == '.') | |
312 | { | |
313 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' | |
314 | (where M == N + 1). */ | |
315 | if (ISDIGIT (*p)) | |
316 | { | |
317 | do | |
318 | { | |
319 | obstack_1grow (&buffer->chunk_obstack, *p); | |
320 | p++; | |
321 | } | |
322 | while (ISDIGIT (p[-1])); | |
323 | gcc_assert (p[-1] == 's'); | |
324 | } | |
325 | else | |
326 | { | |
327 | gcc_assert (*p == '*'); | |
328 | obstack_1grow (&buffer->chunk_obstack, '*'); | |
329 | p++; | |
330 | ||
331 | if (ISDIGIT (*p)) | |
332 | { | |
333 | char *end; | |
334 | unsigned int argno2 = strtoul (p, &end, 10) - 1; | |
335 | p = end; | |
336 | gcc_assert (argno2 == argno - 1); | |
337 | gcc_assert (!any_unnumbered); | |
338 | gcc_assert (*p == '$'); | |
339 | ||
340 | p++; | |
341 | formatters[argno2] = formatters[argno]; | |
342 | } | |
343 | else | |
344 | { | |
345 | gcc_assert (!any_numbered); | |
346 | formatters[argno+1] = formatters[argno]; | |
347 | curarg++; | |
348 | } | |
349 | gcc_assert (*p == 's'); | |
350 | obstack_1grow (&buffer->chunk_obstack, 's'); | |
351 | p++; | |
352 | } | |
353 | } | |
354 | if (*p == '\0') | |
aa6db498 | 355 | break; |
356 | ||
c907c5b1 | 357 | obstack_1grow (&buffer->chunk_obstack, '\0'); |
358 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
359 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
360 | } | |
361 | ||
362 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
363 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
364 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
365 | args[chunk] = 0; | |
366 | ||
367 | /* Set output to the argument obstack, and switch line-wrapping and | |
368 | prefixing off. */ | |
369 | buffer->obstack = &buffer->chunk_obstack; | |
370 | old_wrapping_mode = pp_set_verbatim_wrapping (pp); | |
371 | ||
372 | /* Second phase. Replace each formatter with the formatted text it | |
373 | corresponds to. */ | |
374 | ||
375 | for (argno = 0; formatters[argno]; argno++) | |
376 | { | |
377 | int precision = 0; | |
378 | bool wide = false; | |
379 | bool plus = false; | |
380 | bool hash = false; | |
381 | bool quote = false; | |
382 | ||
383 | /* We do not attempt to enforce any ordering on the modifier | |
384 | characters. */ | |
385 | ||
386 | for (p = *formatters[argno];; p++) | |
89e7e005 | 387 | { |
c907c5b1 | 388 | switch (*p) |
389 | { | |
390 | case 'q': | |
391 | gcc_assert (!quote); | |
392 | quote = true; | |
393 | continue; | |
394 | ||
395 | case '+': | |
396 | gcc_assert (!plus); | |
397 | plus = true; | |
398 | continue; | |
399 | ||
400 | case '#': | |
401 | gcc_assert (!hash); | |
402 | hash = true; | |
403 | continue; | |
404 | ||
405 | case 'w': | |
406 | gcc_assert (!wide); | |
407 | wide = true; | |
408 | continue; | |
409 | ||
410 | case 'l': | |
411 | /* We don't support precision beyond that of "long long". */ | |
412 | gcc_assert (precision < 2); | |
413 | precision++; | |
414 | continue; | |
415 | } | |
416 | break; | |
89e7e005 | 417 | } |
c907c5b1 | 418 | |
419 | gcc_assert (!wide || precision == 0); | |
420 | ||
421 | if (quote) | |
89e7e005 | 422 | pp_string (pp, open_quote); |
c907c5b1 | 423 | |
424 | switch (*p) | |
aa6db498 | 425 | { |
426 | case 'c': | |
427 | pp_character (pp, va_arg (*text->args_ptr, int)); | |
428 | break; | |
429 | ||
430 | case 'd': | |
431 | case 'i': | |
c907c5b1 | 432 | if (wide) |
433 | pp_wide_integer (pp, va_arg (*text->args_ptr, HOST_WIDE_INT)); | |
434 | else | |
435 | pp_integer_with_precision | |
436 | (pp, *text->args_ptr, precision, int, "d"); | |
aa6db498 | 437 | break; |
438 | ||
439 | case 'o': | |
c907c5b1 | 440 | if (wide) |
441 | pp_scalar (pp, "%" HOST_WIDE_INT_PRINT "o", | |
442 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
443 | else | |
444 | pp_integer_with_precision | |
445 | (pp, *text->args_ptr, precision, unsigned, "o"); | |
aa6db498 | 446 | break; |
447 | ||
448 | case 's': | |
449 | pp_string (pp, va_arg (*text->args_ptr, const char *)); | |
450 | break; | |
451 | ||
c907c5b1 | 452 | case 'p': |
453 | pp_pointer (pp, va_arg (*text->args_ptr, void *)); | |
454 | break; | |
aa6db498 | 455 | |
456 | case 'u': | |
c907c5b1 | 457 | if (wide) |
458 | pp_scalar (pp, HOST_WIDE_INT_PRINT_UNSIGNED, | |
459 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
460 | else | |
461 | pp_integer_with_precision | |
462 | (pp, *text->args_ptr, precision, unsigned, "u"); | |
aa6db498 | 463 | break; |
464 | ||
465 | case 'x': | |
c907c5b1 | 466 | if (wide) |
467 | pp_scalar (pp, HOST_WIDE_INT_PRINT_HEX, | |
468 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
469 | else | |
470 | pp_integer_with_precision | |
471 | (pp, *text->args_ptr, precision, unsigned, "x"); | |
aa6db498 | 472 | break; |
473 | ||
c907c5b1 | 474 | case 'H': |
475 | { | |
476 | location_t *locus = va_arg (*text->args_ptr, location_t *); | |
477 | gcc_assert (text->locus != NULL); | |
478 | *text->locus = *locus; | |
479 | } | |
89e7e005 | 480 | break; |
481 | ||
c907c5b1 | 482 | case 'J': |
483 | { | |
484 | tree t = va_arg (*text->args_ptr, tree); | |
485 | gcc_assert (text->locus != NULL); | |
486 | *text->locus = DECL_SOURCE_LOCATION (t); | |
487 | } | |
89e7e005 | 488 | break; |
489 | ||
b8c23db3 | 490 | case 'K': |
491 | { | |
492 | tree t = va_arg (*text->args_ptr, tree), block; | |
493 | gcc_assert (text->locus != NULL); | |
494 | *text->locus = EXPR_LOCATION (t); | |
495 | gcc_assert (text->abstract_origin != NULL); | |
496 | block = TREE_BLOCK (t); | |
497 | *text->abstract_origin = NULL; | |
498 | while (block | |
499 | && TREE_CODE (block) == BLOCK | |
500 | && BLOCK_ABSTRACT_ORIGIN (block)) | |
501 | { | |
502 | tree ao = BLOCK_ABSTRACT_ORIGIN (block); | |
503 | ||
504 | while (TREE_CODE (ao) == BLOCK && BLOCK_ABSTRACT_ORIGIN (ao)) | |
505 | ao = BLOCK_ABSTRACT_ORIGIN (ao); | |
506 | ||
507 | if (TREE_CODE (ao) == FUNCTION_DECL) | |
508 | { | |
509 | *text->abstract_origin = block; | |
510 | break; | |
511 | } | |
512 | block = BLOCK_SUPERCONTEXT (block); | |
513 | } | |
514 | } | |
515 | break; | |
516 | ||
aa6db498 | 517 | case '.': |
518 | { | |
519 | int n; | |
520 | const char *s; | |
583fa9e0 | 521 | |
c907c5b1 | 522 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' |
523 | (where M == N + 1). The format string should be verified | |
524 | already from the first phase. */ | |
525 | p++; | |
526 | if (ISDIGIT (*p)) | |
527 | { | |
528 | char *end; | |
529 | n = strtoul (p, &end, 10); | |
530 | p = end; | |
531 | gcc_assert (*p == 's'); | |
532 | } | |
533 | else | |
534 | { | |
535 | gcc_assert (*p == '*'); | |
536 | p++; | |
537 | gcc_assert (*p == 's'); | |
538 | n = va_arg (*text->args_ptr, int); | |
539 | ||
540 | /* This consumes a second entry in the formatters array. */ | |
541 | gcc_assert (formatters[argno] == formatters[argno+1]); | |
542 | argno++; | |
543 | } | |
544 | ||
aa6db498 | 545 | s = va_arg (*text->args_ptr, const char *); |
546 | pp_append_text (pp, s, s + n); | |
547 | } | |
548 | break; | |
549 | ||
550 | default: | |
1fa3a8f6 | 551 | { |
552 | bool ok; | |
c907c5b1 | 553 | |
1fa3a8f6 | 554 | gcc_assert (pp_format_decoder (pp)); |
c907c5b1 | 555 | ok = pp_format_decoder (pp) (pp, text, p, |
556 | precision, wide, plus, hash); | |
1fa3a8f6 | 557 | gcc_assert (ok); |
558 | } | |
aa6db498 | 559 | } |
c907c5b1 | 560 | |
561 | if (quote) | |
89e7e005 | 562 | pp_string (pp, close_quote); |
c907c5b1 | 563 | |
564 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
565 | *formatters[argno] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
aa6db498 | 566 | } |
c907c5b1 | 567 | |
568 | #ifdef ENABLE_CHECKING | |
569 | for (; argno < PP_NL_ARGMAX; argno++) | |
570 | gcc_assert (!formatters[argno]); | |
571 | #endif | |
572 | ||
573 | /* Revert to normal obstack and wrapping mode. */ | |
574 | buffer->obstack = &buffer->formatted_obstack; | |
575 | buffer->line_length = 0; | |
576 | pp_wrapping_mode (pp) = old_wrapping_mode; | |
577 | pp_clear_state (pp); | |
578 | } | |
579 | ||
580 | /* Format of a message pointed to by TEXT. */ | |
581 | void | |
582 | pp_base_output_formatted_text (pretty_printer *pp) | |
583 | { | |
584 | unsigned int chunk; | |
585 | output_buffer *buffer = pp_buffer (pp); | |
586 | struct chunk_info *chunk_array = buffer->cur_chunk_array; | |
587 | const char **args = chunk_array->args; | |
588 | ||
589 | gcc_assert (buffer->obstack == &buffer->formatted_obstack); | |
590 | gcc_assert (buffer->line_length == 0); | |
591 | ||
592 | /* This is a third phase, first 2 phases done in pp_base_format_args. | |
593 | Now we actually print it. */ | |
594 | for (chunk = 0; args[chunk]; chunk++) | |
595 | pp_string (pp, args[chunk]); | |
596 | ||
597 | /* Deallocate the chunk structure and everything after it (i.e. the | |
598 | associated series of formatted strings). */ | |
599 | buffer->cur_chunk_array = chunk_array->prev; | |
600 | obstack_free (&buffer->chunk_obstack, chunk_array); | |
aa6db498 | 601 | } |
602 | ||
603 | /* Helper subroutine of output_verbatim and verbatim. Do the appropriate | |
604 | settings needed by BUFFER for a verbatim formatting. */ | |
605 | void | |
0de2b732 | 606 | pp_base_format_verbatim (pretty_printer *pp, text_info *text) |
aa6db498 | 607 | { |
aa6db498 | 608 | /* Set verbatim mode. */ |
c907c5b1 | 609 | pp_wrapping_mode_t oldmode = pp_set_verbatim_wrapping (pp); |
610 | ||
aa6db498 | 611 | /* Do the actual formatting. */ |
c907c5b1 | 612 | pp_format (pp, text); |
613 | pp_output_formatted_text (pp); | |
614 | ||
aa6db498 | 615 | /* Restore previous settings. */ |
c907c5b1 | 616 | pp_wrapping_mode (pp) = oldmode; |
aa6db498 | 617 | } |
618 | ||
619 | /* Flush the content of BUFFER onto the attached stream. */ | |
620 | void | |
0de2b732 | 621 | pp_base_flush (pretty_printer *pp) |
aa6db498 | 622 | { |
623 | pp_write_text_to_stream (pp); | |
624 | pp_clear_state (pp); | |
625 | fputc ('\n', pp->buffer->stream); | |
626 | fflush (pp->buffer->stream); | |
20729d5b | 627 | pp_needs_newline (pp) = false; |
aa6db498 | 628 | } |
629 | ||
630 | /* Sets the number of maximum characters per line PRETTY-PRINTER can | |
631 | output in line-wrapping mode. A LENGTH value 0 suppresses | |
632 | line-wrapping. */ | |
633 | void | |
0de2b732 | 634 | pp_base_set_line_maximum_length (pretty_printer *pp, int length) |
aa6db498 | 635 | { |
636 | pp_line_cutoff (pp) = length; | |
637 | pp_set_real_maximum_length (pp); | |
638 | } | |
639 | ||
640 | /* Clear PRETTY-PRINTER output area text info. */ | |
641 | void | |
0de2b732 | 642 | pp_base_clear_output_area (pretty_printer *pp) |
aa6db498 | 643 | { |
c907c5b1 | 644 | obstack_free (pp->buffer->obstack, obstack_base (pp->buffer->obstack)); |
aa6db498 | 645 | pp->buffer->line_length = 0; |
646 | } | |
647 | ||
648 | /* Set PREFIX for PRETTY-PRINTER. */ | |
649 | void | |
0de2b732 | 650 | pp_base_set_prefix (pretty_printer *pp, const char *prefix) |
aa6db498 | 651 | { |
652 | pp->prefix = prefix; | |
653 | pp_set_real_maximum_length (pp); | |
654 | pp->emitted_prefix = false; | |
655 | pp_indentation (pp) = 0; | |
656 | } | |
657 | ||
658 | /* Free PRETTY-PRINTER's prefix, a previously malloc()'d string. */ | |
659 | void | |
0de2b732 | 660 | pp_base_destroy_prefix (pretty_printer *pp) |
aa6db498 | 661 | { |
662 | if (pp->prefix != NULL) | |
663 | { | |
e47a6f81 | 664 | free (CONST_CAST (char *, pp->prefix)); |
aa6db498 | 665 | pp->prefix = NULL; |
666 | } | |
667 | } | |
668 | ||
669 | /* Write out PRETTY-PRINTER's prefix. */ | |
670 | void | |
0de2b732 | 671 | pp_base_emit_prefix (pretty_printer *pp) |
aa6db498 | 672 | { |
673 | if (pp->prefix != NULL) | |
674 | { | |
675 | switch (pp_prefixing_rule (pp)) | |
676 | { | |
677 | default: | |
678 | case DIAGNOSTICS_SHOW_PREFIX_NEVER: | |
679 | break; | |
680 | ||
681 | case DIAGNOSTICS_SHOW_PREFIX_ONCE: | |
682 | if (pp->emitted_prefix) | |
683 | { | |
bfdec0d1 | 684 | pp_base_indent (pp); |
aa6db498 | 685 | break; |
686 | } | |
687 | pp_indentation (pp) += 3; | |
688 | /* Fall through. */ | |
689 | ||
690 | case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: | |
691 | { | |
692 | int prefix_length = strlen (pp->prefix); | |
693 | pp_append_r (pp, pp->prefix, prefix_length); | |
694 | pp->emitted_prefix = true; | |
695 | } | |
696 | break; | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | /* Construct a PRETTY-PRINTER with PREFIX and of MAXIMUM_LENGTH | |
702 | characters per line. */ | |
703 | void | |
704 | pp_construct (pretty_printer *pp, const char *prefix, int maximum_length) | |
705 | { | |
706 | memset (pp, 0, sizeof (pretty_printer)); | |
4c36ffe6 | 707 | pp->buffer = XCNEW (output_buffer); |
c907c5b1 | 708 | obstack_init (&pp->buffer->chunk_obstack); |
709 | obstack_init (&pp->buffer->formatted_obstack); | |
710 | pp->buffer->obstack = &pp->buffer->formatted_obstack; | |
aa6db498 | 711 | pp->buffer->stream = stderr; |
712 | pp_line_cutoff (pp) = maximum_length; | |
713 | pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
714 | pp_set_prefix (pp, prefix); | |
715 | } | |
716 | ||
717 | /* Append a string delimited by START and END to the output area of | |
718 | PRETTY-PRINTER. No line wrapping is done. However, if beginning a | |
719 | new line then emit PRETTY-PRINTER's prefix and skip any leading | |
720 | whitespace if appropriate. The caller must ensure that it is | |
721 | safe to do so. */ | |
722 | void | |
0de2b732 | 723 | pp_base_append_text (pretty_printer *pp, const char *start, const char *end) |
aa6db498 | 724 | { |
725 | /* Emit prefix and skip whitespace if we're starting a new line. */ | |
726 | if (pp->buffer->line_length == 0) | |
727 | { | |
728 | pp_emit_prefix (pp); | |
729 | if (pp_is_wrapping_line (pp)) | |
730 | while (start != end && *start == ' ') | |
731 | ++start; | |
732 | } | |
733 | pp_append_r (pp, start, end - start); | |
734 | } | |
735 | ||
736 | /* Finishes constructing a NULL-terminated character string representing | |
737 | the PRETTY-PRINTED text. */ | |
738 | const char * | |
0de2b732 | 739 | pp_base_formatted_text (pretty_printer *pp) |
aa6db498 | 740 | { |
c907c5b1 | 741 | obstack_1grow (pp->buffer->obstack, '\0'); |
aa6db498 | 742 | return pp_formatted_text_data (pp); |
743 | } | |
744 | ||
745 | /* Return a pointer to the last character emitted in PRETTY-PRINTER's | |
746 | output area. A NULL pointer means no character available. */ | |
747 | const char * | |
0de2b732 | 748 | pp_base_last_position_in_text (const pretty_printer *pp) |
aa6db498 | 749 | { |
750 | const char *p = NULL; | |
c907c5b1 | 751 | struct obstack *text = pp->buffer->obstack; |
aa6db498 | 752 | |
753 | if (obstack_base (text) != obstack_next_free (text)) | |
754 | p = ((const char *) obstack_next_free (text)) - 1; | |
755 | return p; | |
756 | } | |
757 | ||
758 | /* Return the amount of characters PRETTY-PRINTER can accept to | |
c7bf1374 | 759 | make a full line. Meaningful only in line-wrapping mode. */ |
aa6db498 | 760 | int |
0de2b732 | 761 | pp_base_remaining_character_count_for_line (pretty_printer *pp) |
aa6db498 | 762 | { |
763 | return pp->maximum_length - pp->buffer->line_length; | |
764 | } | |
765 | ||
766 | ||
767 | /* Format a message into BUFFER a la printf. */ | |
768 | void | |
769 | pp_printf (pretty_printer *pp, const char *msg, ...) | |
770 | { | |
771 | text_info text; | |
772 | va_list ap; | |
773 | ||
774 | va_start (ap, msg); | |
775 | text.err_no = errno; | |
776 | text.args_ptr = ≈ | |
777 | text.format_spec = msg; | |
c907c5b1 | 778 | text.locus = NULL; |
779 | pp_format (pp, &text); | |
780 | pp_output_formatted_text (pp); | |
aa6db498 | 781 | va_end (ap); |
782 | } | |
783 | ||
784 | ||
785 | /* Output MESSAGE verbatim into BUFFER. */ | |
786 | void | |
787 | pp_verbatim (pretty_printer *pp, const char *msg, ...) | |
788 | { | |
789 | text_info text; | |
790 | va_list ap; | |
791 | ||
792 | va_start (ap, msg); | |
793 | text.err_no = errno; | |
794 | text.args_ptr = ≈ | |
795 | text.format_spec = msg; | |
c907c5b1 | 796 | text.locus = NULL; |
aa6db498 | 797 | pp_format_verbatim (pp, &text); |
798 | va_end (ap); | |
799 | } | |
800 | ||
801 | ||
802 | ||
803 | /* Have PRETTY-PRINTER start a new line. */ | |
804 | void | |
76a6451b | 805 | pp_base_newline (pretty_printer *pp) |
aa6db498 | 806 | { |
c907c5b1 | 807 | obstack_1grow (pp->buffer->obstack, '\n'); |
aa6db498 | 808 | pp->buffer->line_length = 0; |
809 | } | |
810 | ||
811 | /* Have PRETTY-PRINTER add a CHARACTER. */ | |
812 | void | |
76a6451b | 813 | pp_base_character (pretty_printer *pp, int c) |
aa6db498 | 814 | { |
815 | if (pp_is_wrapping_line (pp) | |
816 | && pp_remaining_character_count_for_line (pp) <= 0) | |
817 | { | |
818 | pp_newline (pp); | |
819 | if (ISSPACE (c)) | |
820 | return; | |
821 | } | |
c907c5b1 | 822 | obstack_1grow (pp->buffer->obstack, c); |
aa6db498 | 823 | ++pp->buffer->line_length; |
824 | } | |
825 | ||
826 | /* Append a STRING to the output area of PRETTY-PRINTER; the STRING may | |
827 | be line-wrapped if in appropriate mode. */ | |
828 | void | |
76a6451b | 829 | pp_base_string (pretty_printer *pp, const char *str) |
aa6db498 | 830 | { |
831 | pp_maybe_wrap_text (pp, str, str + (str ? strlen (str) : 0)); | |
832 | } | |
833 | ||
dac49aa5 | 834 | /* Maybe print out a whitespace if needed. */ |
aa6db498 | 835 | |
69cb846f | 836 | void |
837 | pp_base_maybe_space (pretty_printer *pp) | |
838 | { | |
839 | if (pp_base (pp)->padding != pp_none) | |
840 | { | |
841 | pp_space (pp); | |
842 | pp_base (pp)->padding = pp_none; | |
843 | } | |
844 | } |