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b6fe0bb8 | 1 | /* Various declarations for language-independent pretty-print subroutines. |
66647d44 | 2 | Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
b6fe0bb8 GDR |
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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
b6fe0bb8 GDR |
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 | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
b6fe0bb8 GDR |
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" | |
a668adb2 | 26 | #include "intl.h" |
b6fe0bb8 | 27 | #include "pretty-print.h" |
d5706a1e | 28 | #include "tree.h" |
a3af5087 JM |
29 | #include "ggc.h" |
30 | ||
31 | #if HAVE_ICONV | |
32 | #include <iconv.h> | |
33 | #endif | |
b6fe0bb8 GDR |
34 | |
35 | #define obstack_chunk_alloc xmalloc | |
36 | #define obstack_chunk_free free | |
37 | ||
38 | /* A pointer to the formatted diagnostic message. */ | |
39 | #define pp_formatted_text_data(PP) \ | |
39ce81c9 | 40 | ((const char *) obstack_base (pp_base (PP)->buffer->obstack)) |
b6fe0bb8 GDR |
41 | |
42 | /* Format an integer given by va_arg (ARG, type-specifier T) where | |
43 | type-specifier is a precision modifier as indicated by PREC. F is | |
44 | a string used to construct the appropriate format-specifier. */ | |
45 | #define pp_integer_with_precision(PP, ARG, PREC, T, F) \ | |
46 | do \ | |
47 | switch (PREC) \ | |
48 | { \ | |
49 | case 0: \ | |
50 | pp_scalar (PP, "%" F, va_arg (ARG, T)); \ | |
51 | break; \ | |
52 | \ | |
53 | case 1: \ | |
54 | pp_scalar (PP, "%l" F, va_arg (ARG, long T)); \ | |
55 | break; \ | |
56 | \ | |
57 | case 2: \ | |
2a157700 | 58 | pp_scalar (PP, "%" HOST_LONG_LONG_FORMAT F, va_arg (ARG, long long T)); \ |
b6fe0bb8 GDR |
59 | break; \ |
60 | \ | |
61 | default: \ | |
62 | break; \ | |
63 | } \ | |
64 | while (0) | |
65 | ||
66 | ||
67 | /* Subroutine of pp_set_maximum_length. Set up PRETTY-PRINTER's | |
68 | internal maximum characters per line. */ | |
69 | static void | |
70 | pp_set_real_maximum_length (pretty_printer *pp) | |
71 | { | |
72 | /* If we're told not to wrap lines then do the obvious thing. In case | |
73 | we'll emit prefix only once per message, it is appropriate | |
74 | not to increase unnecessarily the line-length cut-off. */ | |
75 | if (!pp_is_wrapping_line (pp) | |
76 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_ONCE | |
77 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_NEVER) | |
78 | pp->maximum_length = pp_line_cutoff (pp); | |
79 | else | |
80 | { | |
81 | int prefix_length = pp->prefix ? strlen (pp->prefix) : 0; | |
82 | /* If the prefix is ridiculously too long, output at least | |
83 | 32 characters. */ | |
84 | if (pp_line_cutoff (pp) - prefix_length < 32) | |
85 | pp->maximum_length = pp_line_cutoff (pp) + 32; | |
86 | else | |
87 | pp->maximum_length = pp_line_cutoff (pp); | |
88 | } | |
89 | } | |
90 | ||
91 | /* Clear PRETTY-PRINTER's output state. */ | |
92 | static inline void | |
93 | pp_clear_state (pretty_printer *pp) | |
94 | { | |
95 | pp->emitted_prefix = false; | |
96 | pp_indentation (pp) = 0; | |
97 | } | |
98 | ||
b6fe0bb8 | 99 | /* Flush the formatted text of PRETTY-PRINTER onto the attached stream. */ |
6de9cd9a | 100 | void |
b6fe0bb8 GDR |
101 | pp_write_text_to_stream (pretty_printer *pp) |
102 | { | |
103 | const char *text = pp_formatted_text (pp); | |
104 | fputs (text, pp->buffer->stream); | |
105 | pp_clear_output_area (pp); | |
106 | } | |
107 | ||
108 | /* Wrap a text delimited by START and END into PRETTY-PRINTER. */ | |
109 | static void | |
110 | pp_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
111 | { | |
112 | bool wrapping_line = pp_is_wrapping_line (pp); | |
113 | ||
114 | while (start != end) | |
115 | { | |
116 | /* Dump anything bordered by whitespaces. */ | |
117 | { | |
118 | const char *p = start; | |
119 | while (p != end && !ISBLANK (*p) && *p != '\n') | |
120 | ++p; | |
121 | if (wrapping_line | |
122 | && p - start >= pp_remaining_character_count_for_line (pp)) | |
123 | pp_newline (pp); | |
124 | pp_append_text (pp, start, p); | |
125 | start = p; | |
126 | } | |
127 | ||
128 | if (start != end && ISBLANK (*start)) | |
129 | { | |
130 | pp_space (pp); | |
131 | ++start; | |
132 | } | |
133 | if (start != end && *start == '\n') | |
134 | { | |
135 | pp_newline (pp); | |
136 | ++start; | |
137 | } | |
138 | } | |
139 | } | |
140 | ||
141 | /* Same as pp_wrap_text but wrap text only when in line-wrapping mode. */ | |
142 | static inline void | |
143 | pp_maybe_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
144 | { | |
145 | if (pp_is_wrapping_line (pp)) | |
146 | pp_wrap_text (pp, start, end); | |
147 | else | |
148 | pp_append_text (pp, start, end); | |
149 | } | |
150 | ||
151 | /* Append to the output area of PRETTY-PRINTER a string specified by its | |
152 | STARTing character and LENGTH. */ | |
153 | static inline void | |
154 | pp_append_r (pretty_printer *pp, const char *start, int length) | |
155 | { | |
39ce81c9 | 156 | obstack_grow (pp->buffer->obstack, start, length); |
b6fe0bb8 GDR |
157 | pp->buffer->line_length += length; |
158 | } | |
159 | ||
4b780675 GDR |
160 | /* Insert enough spaces into the output area of PRETTY-PRINTER to bring |
161 | the column position to the current indentation level, assuming that a | |
162 | newline has just been written to the buffer. */ | |
163 | void | |
164 | pp_base_indent (pretty_printer *pp) | |
165 | { | |
166 | int n = pp_indentation (pp); | |
167 | int i; | |
168 | ||
169 | for (i = 0; i < n; ++i) | |
170 | pp_space (pp); | |
171 | } | |
172 | ||
39ce81c9 | 173 | /* The following format specifiers are recognized as being client independent: |
b6fe0bb8 GDR |
174 | %d, %i: (signed) integer in base ten. |
175 | %u: unsigned integer in base ten. | |
176 | %o: unsigned integer in base eight. | |
177 | %x: unsigned integer in base sixteen. | |
178 | %ld, %li, %lo, %lu, %lx: long versions of the above. | |
179 | %lld, %lli, %llo, %llu, %llx: long long versions. | |
180 | %wd, %wi, %wo, %wu, %wx: HOST_WIDE_INT versions. | |
181 | %c: character. | |
182 | %s: string. | |
183 | %p: pointer. | |
184 | %m: strerror(text->err_no) - does not consume a value from args_ptr. | |
a668adb2 | 185 | %%: '%'. |
ca09cd34 JM |
186 | %<: opening quote. |
187 | %>: closing quote. | |
188 | %': apostrophe (should only be used in untranslated messages; | |
189 | translations should use appropriate punctuation directly). | |
39ce81c9 ZW |
190 | %.*s: a substring the length of which is specified by an argument |
191 | integer. | |
192 | %Ns: likewise, but length specified as constant in the format string. | |
c94ed7a1 | 193 | %K: a statement, from which EXPR_LOCATION and TREE_BLOCK will be recorded. |
39ce81c9 ZW |
194 | Flag 'q': quote formatted text (must come immediately after '%'). |
195 | ||
196 | Arguments can be used sequentially, or through %N$ resp. *N$ | |
197 | notation Nth argument after the format string. If %N$ / *N$ | |
198 | notation is used, it must be used for all arguments, except %m, %%, | |
199 | %<, %> and %', which may not have a number, as they do not consume | |
200 | an argument. When %M$.*N$s is used, M must be N + 1. (This may | |
201 | also be written %M$.*s, provided N is not otherwise used.) The | |
202 | format string must have conversion specifiers with argument numbers | |
203 | 1 up to highest argument; each argument may only be used once. | |
204 | A format string can have at most 30 arguments. */ | |
205 | ||
206 | /* Formatting phases 1 and 2: render TEXT->format_spec plus | |
207 | TEXT->args_ptr into a series of chunks in PP->buffer->args[]. | |
208 | Phase 3 is in pp_base_format_text. */ | |
209 | ||
b6fe0bb8 | 210 | void |
39ce81c9 | 211 | pp_base_format (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 212 | { |
39ce81c9 ZW |
213 | output_buffer *buffer = pp->buffer; |
214 | const char *p; | |
215 | const char **args; | |
216 | struct chunk_info *new_chunk_array; | |
217 | ||
218 | unsigned int curarg = 0, chunk = 0, argno; | |
219 | pp_wrapping_mode_t old_wrapping_mode; | |
220 | bool any_unnumbered = false, any_numbered = false; | |
221 | const char **formatters[PP_NL_ARGMAX]; | |
222 | ||
223 | /* Allocate a new chunk structure. */ | |
224 | new_chunk_array = XOBNEW (&buffer->chunk_obstack, struct chunk_info); | |
225 | new_chunk_array->prev = buffer->cur_chunk_array; | |
226 | buffer->cur_chunk_array = new_chunk_array; | |
227 | args = new_chunk_array->args; | |
228 | ||
229 | /* Formatting phase 1: split up TEXT->format_spec into chunks in | |
230 | PP->buffer->args[]. Even-numbered chunks are to be output | |
231 | verbatim, odd-numbered chunks are format specifiers. | |
232 | %m, %%, %<, %>, and %' are replaced with the appropriate text at | |
233 | this point. */ | |
234 | ||
235 | memset (formatters, 0, sizeof formatters); | |
236 | ||
237 | for (p = text->format_spec; *p; ) | |
b6fe0bb8 | 238 | { |
39ce81c9 ZW |
239 | while (*p != '\0' && *p != '%') |
240 | { | |
241 | obstack_1grow (&buffer->chunk_obstack, *p); | |
242 | p++; | |
243 | } | |
b6fe0bb8 | 244 | |
39ce81c9 ZW |
245 | if (*p == '\0') |
246 | break; | |
247 | ||
248 | switch (*++p) | |
249 | { | |
250 | case '\0': | |
251 | gcc_unreachable (); | |
252 | ||
253 | case '%': | |
254 | obstack_1grow (&buffer->chunk_obstack, '%'); | |
255 | p++; | |
256 | continue; | |
b6fe0bb8 | 257 | |
39ce81c9 ZW |
258 | case '<': |
259 | obstack_grow (&buffer->chunk_obstack, | |
260 | open_quote, strlen (open_quote)); | |
261 | p++; | |
262 | continue; | |
263 | ||
264 | case '>': | |
265 | case '\'': | |
266 | obstack_grow (&buffer->chunk_obstack, | |
241de8a0 | 267 | close_quote, strlen (close_quote)); |
39ce81c9 ZW |
268 | p++; |
269 | continue; | |
270 | ||
271 | case 'm': | |
272 | { | |
273 | const char *errstr = xstrerror (text->err_no); | |
274 | obstack_grow (&buffer->chunk_obstack, errstr, strlen (errstr)); | |
275 | } | |
276 | p++; | |
277 | continue; | |
278 | ||
279 | default: | |
280 | /* Handled in phase 2. Terminate the plain chunk here. */ | |
281 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
282 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
283 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
284 | break; | |
285 | } | |
286 | ||
287 | if (ISDIGIT (*p)) | |
288 | { | |
289 | char *end; | |
290 | argno = strtoul (p, &end, 10) - 1; | |
291 | p = end; | |
292 | gcc_assert (*p == '$'); | |
293 | p++; | |
294 | ||
295 | any_numbered = true; | |
296 | gcc_assert (!any_unnumbered); | |
297 | } | |
298 | else | |
299 | { | |
300 | argno = curarg++; | |
301 | any_unnumbered = true; | |
302 | gcc_assert (!any_numbered); | |
303 | } | |
304 | gcc_assert (argno < PP_NL_ARGMAX); | |
305 | gcc_assert (!formatters[argno]); | |
306 | formatters[argno] = &args[chunk]; | |
307 | do | |
308 | { | |
309 | obstack_1grow (&buffer->chunk_obstack, *p); | |
310 | p++; | |
311 | } | |
312 | while (strchr ("qwl+#", p[-1])); | |
313 | ||
314 | if (p[-1] == '.') | |
315 | { | |
316 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' | |
317 | (where M == N + 1). */ | |
318 | if (ISDIGIT (*p)) | |
319 | { | |
320 | do | |
321 | { | |
322 | obstack_1grow (&buffer->chunk_obstack, *p); | |
323 | p++; | |
324 | } | |
325 | while (ISDIGIT (p[-1])); | |
326 | gcc_assert (p[-1] == 's'); | |
327 | } | |
328 | else | |
329 | { | |
330 | gcc_assert (*p == '*'); | |
331 | obstack_1grow (&buffer->chunk_obstack, '*'); | |
332 | p++; | |
333 | ||
334 | if (ISDIGIT (*p)) | |
335 | { | |
336 | char *end; | |
337 | unsigned int argno2 = strtoul (p, &end, 10) - 1; | |
338 | p = end; | |
339 | gcc_assert (argno2 == argno - 1); | |
340 | gcc_assert (!any_unnumbered); | |
341 | gcc_assert (*p == '$'); | |
342 | ||
343 | p++; | |
344 | formatters[argno2] = formatters[argno]; | |
345 | } | |
346 | else | |
347 | { | |
348 | gcc_assert (!any_numbered); | |
349 | formatters[argno+1] = formatters[argno]; | |
350 | curarg++; | |
351 | } | |
352 | gcc_assert (*p == 's'); | |
353 | obstack_1grow (&buffer->chunk_obstack, 's'); | |
354 | p++; | |
355 | } | |
356 | } | |
357 | if (*p == '\0') | |
b6fe0bb8 GDR |
358 | break; |
359 | ||
39ce81c9 ZW |
360 | obstack_1grow (&buffer->chunk_obstack, '\0'); |
361 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
362 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
363 | } | |
364 | ||
365 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
366 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
367 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
368 | args[chunk] = 0; | |
369 | ||
370 | /* Set output to the argument obstack, and switch line-wrapping and | |
371 | prefixing off. */ | |
372 | buffer->obstack = &buffer->chunk_obstack; | |
373 | old_wrapping_mode = pp_set_verbatim_wrapping (pp); | |
374 | ||
375 | /* Second phase. Replace each formatter with the formatted text it | |
376 | corresponds to. */ | |
377 | ||
378 | for (argno = 0; formatters[argno]; argno++) | |
379 | { | |
380 | int precision = 0; | |
381 | bool wide = false; | |
382 | bool plus = false; | |
383 | bool hash = false; | |
384 | bool quote = false; | |
385 | ||
386 | /* We do not attempt to enforce any ordering on the modifier | |
387 | characters. */ | |
388 | ||
389 | for (p = *formatters[argno];; p++) | |
a668adb2 | 390 | { |
39ce81c9 ZW |
391 | switch (*p) |
392 | { | |
393 | case 'q': | |
394 | gcc_assert (!quote); | |
395 | quote = true; | |
396 | continue; | |
397 | ||
398 | case '+': | |
399 | gcc_assert (!plus); | |
400 | plus = true; | |
401 | continue; | |
402 | ||
403 | case '#': | |
404 | gcc_assert (!hash); | |
405 | hash = true; | |
406 | continue; | |
407 | ||
408 | case 'w': | |
409 | gcc_assert (!wide); | |
410 | wide = true; | |
411 | continue; | |
412 | ||
413 | case 'l': | |
414 | /* We don't support precision beyond that of "long long". */ | |
415 | gcc_assert (precision < 2); | |
416 | precision++; | |
417 | continue; | |
418 | } | |
419 | break; | |
a668adb2 | 420 | } |
39ce81c9 ZW |
421 | |
422 | gcc_assert (!wide || precision == 0); | |
423 | ||
424 | if (quote) | |
a668adb2 | 425 | pp_string (pp, open_quote); |
39ce81c9 ZW |
426 | |
427 | switch (*p) | |
b6fe0bb8 GDR |
428 | { |
429 | case 'c': | |
430 | pp_character (pp, va_arg (*text->args_ptr, int)); | |
431 | break; | |
432 | ||
433 | case 'd': | |
434 | case 'i': | |
39ce81c9 ZW |
435 | if (wide) |
436 | pp_wide_integer (pp, va_arg (*text->args_ptr, HOST_WIDE_INT)); | |
437 | else | |
438 | pp_integer_with_precision | |
439 | (pp, *text->args_ptr, precision, int, "d"); | |
b6fe0bb8 GDR |
440 | break; |
441 | ||
442 | case 'o': | |
39ce81c9 ZW |
443 | if (wide) |
444 | pp_scalar (pp, "%" HOST_WIDE_INT_PRINT "o", | |
445 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
446 | else | |
447 | pp_integer_with_precision | |
448 | (pp, *text->args_ptr, precision, unsigned, "o"); | |
b6fe0bb8 GDR |
449 | break; |
450 | ||
451 | case 's': | |
452 | pp_string (pp, va_arg (*text->args_ptr, const char *)); | |
453 | break; | |
454 | ||
39ce81c9 ZW |
455 | case 'p': |
456 | pp_pointer (pp, va_arg (*text->args_ptr, void *)); | |
457 | break; | |
b6fe0bb8 GDR |
458 | |
459 | case 'u': | |
39ce81c9 ZW |
460 | if (wide) |
461 | pp_scalar (pp, HOST_WIDE_INT_PRINT_UNSIGNED, | |
462 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
463 | else | |
464 | pp_integer_with_precision | |
465 | (pp, *text->args_ptr, precision, unsigned, "u"); | |
b6fe0bb8 GDR |
466 | break; |
467 | ||
468 | case 'x': | |
39ce81c9 ZW |
469 | if (wide) |
470 | pp_scalar (pp, HOST_WIDE_INT_PRINT_HEX, | |
471 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
472 | else | |
473 | pp_integer_with_precision | |
474 | (pp, *text->args_ptr, precision, unsigned, "x"); | |
b6fe0bb8 GDR |
475 | break; |
476 | ||
c94ed7a1 JJ |
477 | case 'K': |
478 | { | |
479 | tree t = va_arg (*text->args_ptr, tree), block; | |
480 | gcc_assert (text->locus != NULL); | |
481 | *text->locus = EXPR_LOCATION (t); | |
482 | gcc_assert (text->abstract_origin != NULL); | |
483 | block = TREE_BLOCK (t); | |
484 | *text->abstract_origin = NULL; | |
485 | while (block | |
486 | && TREE_CODE (block) == BLOCK | |
487 | && BLOCK_ABSTRACT_ORIGIN (block)) | |
488 | { | |
489 | tree ao = BLOCK_ABSTRACT_ORIGIN (block); | |
490 | ||
e92cbe3a JJ |
491 | while (TREE_CODE (ao) == BLOCK |
492 | && BLOCK_ABSTRACT_ORIGIN (ao) | |
493 | && BLOCK_ABSTRACT_ORIGIN (ao) != ao) | |
c94ed7a1 JJ |
494 | ao = BLOCK_ABSTRACT_ORIGIN (ao); |
495 | ||
496 | if (TREE_CODE (ao) == FUNCTION_DECL) | |
497 | { | |
498 | *text->abstract_origin = block; | |
499 | break; | |
500 | } | |
501 | block = BLOCK_SUPERCONTEXT (block); | |
502 | } | |
503 | } | |
504 | break; | |
505 | ||
b6fe0bb8 GDR |
506 | case '.': |
507 | { | |
508 | int n; | |
509 | const char *s; | |
d5706a1e | 510 | |
39ce81c9 ZW |
511 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' |
512 | (where M == N + 1). The format string should be verified | |
513 | already from the first phase. */ | |
514 | p++; | |
515 | if (ISDIGIT (*p)) | |
516 | { | |
517 | char *end; | |
518 | n = strtoul (p, &end, 10); | |
519 | p = end; | |
520 | gcc_assert (*p == 's'); | |
521 | } | |
522 | else | |
523 | { | |
524 | gcc_assert (*p == '*'); | |
525 | p++; | |
526 | gcc_assert (*p == 's'); | |
527 | n = va_arg (*text->args_ptr, int); | |
528 | ||
529 | /* This consumes a second entry in the formatters array. */ | |
530 | gcc_assert (formatters[argno] == formatters[argno+1]); | |
531 | argno++; | |
532 | } | |
533 | ||
b6fe0bb8 GDR |
534 | s = va_arg (*text->args_ptr, const char *); |
535 | pp_append_text (pp, s, s + n); | |
536 | } | |
537 | break; | |
538 | ||
539 | default: | |
0e61db61 NS |
540 | { |
541 | bool ok; | |
39ce81c9 | 542 | |
0e61db61 | 543 | gcc_assert (pp_format_decoder (pp)); |
39ce81c9 ZW |
544 | ok = pp_format_decoder (pp) (pp, text, p, |
545 | precision, wide, plus, hash); | |
0e61db61 NS |
546 | gcc_assert (ok); |
547 | } | |
b6fe0bb8 | 548 | } |
39ce81c9 ZW |
549 | |
550 | if (quote) | |
a668adb2 | 551 | pp_string (pp, close_quote); |
39ce81c9 ZW |
552 | |
553 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
554 | *formatters[argno] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
b6fe0bb8 | 555 | } |
39ce81c9 ZW |
556 | |
557 | #ifdef ENABLE_CHECKING | |
558 | for (; argno < PP_NL_ARGMAX; argno++) | |
559 | gcc_assert (!formatters[argno]); | |
560 | #endif | |
561 | ||
562 | /* Revert to normal obstack and wrapping mode. */ | |
563 | buffer->obstack = &buffer->formatted_obstack; | |
564 | buffer->line_length = 0; | |
565 | pp_wrapping_mode (pp) = old_wrapping_mode; | |
566 | pp_clear_state (pp); | |
567 | } | |
568 | ||
569 | /* Format of a message pointed to by TEXT. */ | |
570 | void | |
571 | pp_base_output_formatted_text (pretty_printer *pp) | |
572 | { | |
573 | unsigned int chunk; | |
574 | output_buffer *buffer = pp_buffer (pp); | |
575 | struct chunk_info *chunk_array = buffer->cur_chunk_array; | |
576 | const char **args = chunk_array->args; | |
577 | ||
578 | gcc_assert (buffer->obstack == &buffer->formatted_obstack); | |
579 | gcc_assert (buffer->line_length == 0); | |
580 | ||
581 | /* This is a third phase, first 2 phases done in pp_base_format_args. | |
582 | Now we actually print it. */ | |
583 | for (chunk = 0; args[chunk]; chunk++) | |
584 | pp_string (pp, args[chunk]); | |
585 | ||
586 | /* Deallocate the chunk structure and everything after it (i.e. the | |
587 | associated series of formatted strings). */ | |
588 | buffer->cur_chunk_array = chunk_array->prev; | |
589 | obstack_free (&buffer->chunk_obstack, chunk_array); | |
b6fe0bb8 GDR |
590 | } |
591 | ||
592 | /* Helper subroutine of output_verbatim and verbatim. Do the appropriate | |
593 | settings needed by BUFFER for a verbatim formatting. */ | |
594 | void | |
e1a4dd13 | 595 | pp_base_format_verbatim (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 596 | { |
b6fe0bb8 | 597 | /* Set verbatim mode. */ |
39ce81c9 ZW |
598 | pp_wrapping_mode_t oldmode = pp_set_verbatim_wrapping (pp); |
599 | ||
b6fe0bb8 | 600 | /* Do the actual formatting. */ |
39ce81c9 ZW |
601 | pp_format (pp, text); |
602 | pp_output_formatted_text (pp); | |
603 | ||
b6fe0bb8 | 604 | /* Restore previous settings. */ |
39ce81c9 | 605 | pp_wrapping_mode (pp) = oldmode; |
b6fe0bb8 GDR |
606 | } |
607 | ||
608 | /* Flush the content of BUFFER onto the attached stream. */ | |
609 | void | |
e1a4dd13 | 610 | pp_base_flush (pretty_printer *pp) |
b6fe0bb8 GDR |
611 | { |
612 | pp_write_text_to_stream (pp); | |
613 | pp_clear_state (pp); | |
614 | fputc ('\n', pp->buffer->stream); | |
615 | fflush (pp->buffer->stream); | |
7b330e08 | 616 | pp_needs_newline (pp) = false; |
b6fe0bb8 GDR |
617 | } |
618 | ||
619 | /* Sets the number of maximum characters per line PRETTY-PRINTER can | |
620 | output in line-wrapping mode. A LENGTH value 0 suppresses | |
621 | line-wrapping. */ | |
622 | void | |
e1a4dd13 | 623 | pp_base_set_line_maximum_length (pretty_printer *pp, int length) |
b6fe0bb8 GDR |
624 | { |
625 | pp_line_cutoff (pp) = length; | |
626 | pp_set_real_maximum_length (pp); | |
627 | } | |
628 | ||
629 | /* Clear PRETTY-PRINTER output area text info. */ | |
630 | void | |
e1a4dd13 | 631 | pp_base_clear_output_area (pretty_printer *pp) |
b6fe0bb8 | 632 | { |
39ce81c9 | 633 | obstack_free (pp->buffer->obstack, obstack_base (pp->buffer->obstack)); |
b6fe0bb8 GDR |
634 | pp->buffer->line_length = 0; |
635 | } | |
636 | ||
637 | /* Set PREFIX for PRETTY-PRINTER. */ | |
638 | void | |
e1a4dd13 | 639 | pp_base_set_prefix (pretty_printer *pp, const char *prefix) |
b6fe0bb8 GDR |
640 | { |
641 | pp->prefix = prefix; | |
642 | pp_set_real_maximum_length (pp); | |
643 | pp->emitted_prefix = false; | |
644 | pp_indentation (pp) = 0; | |
645 | } | |
646 | ||
647 | /* Free PRETTY-PRINTER's prefix, a previously malloc()'d string. */ | |
648 | void | |
e1a4dd13 | 649 | pp_base_destroy_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
650 | { |
651 | if (pp->prefix != NULL) | |
652 | { | |
b1d5455a | 653 | free (CONST_CAST (char *, pp->prefix)); |
b6fe0bb8 GDR |
654 | pp->prefix = NULL; |
655 | } | |
656 | } | |
657 | ||
658 | /* Write out PRETTY-PRINTER's prefix. */ | |
659 | void | |
e1a4dd13 | 660 | pp_base_emit_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
661 | { |
662 | if (pp->prefix != NULL) | |
663 | { | |
664 | switch (pp_prefixing_rule (pp)) | |
665 | { | |
666 | default: | |
667 | case DIAGNOSTICS_SHOW_PREFIX_NEVER: | |
668 | break; | |
669 | ||
670 | case DIAGNOSTICS_SHOW_PREFIX_ONCE: | |
671 | if (pp->emitted_prefix) | |
672 | { | |
4b780675 | 673 | pp_base_indent (pp); |
b6fe0bb8 GDR |
674 | break; |
675 | } | |
676 | pp_indentation (pp) += 3; | |
677 | /* Fall through. */ | |
678 | ||
679 | case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: | |
680 | { | |
681 | int prefix_length = strlen (pp->prefix); | |
682 | pp_append_r (pp, pp->prefix, prefix_length); | |
683 | pp->emitted_prefix = true; | |
684 | } | |
685 | break; | |
686 | } | |
687 | } | |
688 | } | |
689 | ||
690 | /* Construct a PRETTY-PRINTER with PREFIX and of MAXIMUM_LENGTH | |
691 | characters per line. */ | |
692 | void | |
693 | pp_construct (pretty_printer *pp, const char *prefix, int maximum_length) | |
694 | { | |
695 | memset (pp, 0, sizeof (pretty_printer)); | |
5ed6ace5 | 696 | pp->buffer = XCNEW (output_buffer); |
39ce81c9 ZW |
697 | obstack_init (&pp->buffer->chunk_obstack); |
698 | obstack_init (&pp->buffer->formatted_obstack); | |
699 | pp->buffer->obstack = &pp->buffer->formatted_obstack; | |
b6fe0bb8 GDR |
700 | pp->buffer->stream = stderr; |
701 | pp_line_cutoff (pp) = maximum_length; | |
702 | pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
703 | pp_set_prefix (pp, prefix); | |
f41c4af3 | 704 | pp_translate_identifiers (pp) = true; |
b6fe0bb8 GDR |
705 | } |
706 | ||
707 | /* Append a string delimited by START and END to the output area of | |
708 | PRETTY-PRINTER. No line wrapping is done. However, if beginning a | |
709 | new line then emit PRETTY-PRINTER's prefix and skip any leading | |
710 | whitespace if appropriate. The caller must ensure that it is | |
711 | safe to do so. */ | |
712 | void | |
e1a4dd13 | 713 | pp_base_append_text (pretty_printer *pp, const char *start, const char *end) |
b6fe0bb8 GDR |
714 | { |
715 | /* Emit prefix and skip whitespace if we're starting a new line. */ | |
716 | if (pp->buffer->line_length == 0) | |
717 | { | |
718 | pp_emit_prefix (pp); | |
719 | if (pp_is_wrapping_line (pp)) | |
720 | while (start != end && *start == ' ') | |
721 | ++start; | |
722 | } | |
723 | pp_append_r (pp, start, end - start); | |
724 | } | |
725 | ||
726 | /* Finishes constructing a NULL-terminated character string representing | |
727 | the PRETTY-PRINTED text. */ | |
728 | const char * | |
e1a4dd13 | 729 | pp_base_formatted_text (pretty_printer *pp) |
b6fe0bb8 | 730 | { |
39ce81c9 | 731 | obstack_1grow (pp->buffer->obstack, '\0'); |
b6fe0bb8 GDR |
732 | return pp_formatted_text_data (pp); |
733 | } | |
734 | ||
735 | /* Return a pointer to the last character emitted in PRETTY-PRINTER's | |
736 | output area. A NULL pointer means no character available. */ | |
737 | const char * | |
e1a4dd13 | 738 | pp_base_last_position_in_text (const pretty_printer *pp) |
b6fe0bb8 GDR |
739 | { |
740 | const char *p = NULL; | |
39ce81c9 | 741 | struct obstack *text = pp->buffer->obstack; |
b6fe0bb8 GDR |
742 | |
743 | if (obstack_base (text) != obstack_next_free (text)) | |
744 | p = ((const char *) obstack_next_free (text)) - 1; | |
745 | return p; | |
746 | } | |
747 | ||
748 | /* Return the amount of characters PRETTY-PRINTER can accept to | |
ba228239 | 749 | make a full line. Meaningful only in line-wrapping mode. */ |
b6fe0bb8 | 750 | int |
e1a4dd13 | 751 | pp_base_remaining_character_count_for_line (pretty_printer *pp) |
b6fe0bb8 GDR |
752 | { |
753 | return pp->maximum_length - pp->buffer->line_length; | |
754 | } | |
755 | ||
756 | ||
757 | /* Format a message into BUFFER a la printf. */ | |
758 | void | |
759 | pp_printf (pretty_printer *pp, const char *msg, ...) | |
760 | { | |
761 | text_info text; | |
762 | va_list ap; | |
763 | ||
764 | va_start (ap, msg); | |
765 | text.err_no = errno; | |
766 | text.args_ptr = ≈ | |
767 | text.format_spec = msg; | |
39ce81c9 ZW |
768 | text.locus = NULL; |
769 | pp_format (pp, &text); | |
770 | pp_output_formatted_text (pp); | |
b6fe0bb8 GDR |
771 | va_end (ap); |
772 | } | |
773 | ||
774 | ||
775 | /* Output MESSAGE verbatim into BUFFER. */ | |
776 | void | |
777 | pp_verbatim (pretty_printer *pp, const char *msg, ...) | |
778 | { | |
779 | text_info text; | |
780 | va_list ap; | |
781 | ||
782 | va_start (ap, msg); | |
783 | text.err_no = errno; | |
784 | text.args_ptr = ≈ | |
785 | text.format_spec = msg; | |
39ce81c9 | 786 | text.locus = NULL; |
b6fe0bb8 GDR |
787 | pp_format_verbatim (pp, &text); |
788 | va_end (ap); | |
789 | } | |
790 | ||
791 | ||
792 | ||
793 | /* Have PRETTY-PRINTER start a new line. */ | |
794 | void | |
8f7ace48 | 795 | pp_base_newline (pretty_printer *pp) |
b6fe0bb8 | 796 | { |
39ce81c9 | 797 | obstack_1grow (pp->buffer->obstack, '\n'); |
b6fe0bb8 GDR |
798 | pp->buffer->line_length = 0; |
799 | } | |
800 | ||
801 | /* Have PRETTY-PRINTER add a CHARACTER. */ | |
802 | void | |
8f7ace48 | 803 | pp_base_character (pretty_printer *pp, int c) |
b6fe0bb8 GDR |
804 | { |
805 | if (pp_is_wrapping_line (pp) | |
806 | && pp_remaining_character_count_for_line (pp) <= 0) | |
807 | { | |
808 | pp_newline (pp); | |
809 | if (ISSPACE (c)) | |
810 | return; | |
811 | } | |
39ce81c9 | 812 | obstack_1grow (pp->buffer->obstack, c); |
b6fe0bb8 GDR |
813 | ++pp->buffer->line_length; |
814 | } | |
815 | ||
816 | /* Append a STRING to the output area of PRETTY-PRINTER; the STRING may | |
817 | be line-wrapped if in appropriate mode. */ | |
818 | void | |
8f7ace48 | 819 | pp_base_string (pretty_printer *pp, const char *str) |
b6fe0bb8 GDR |
820 | { |
821 | pp_maybe_wrap_text (pp, str, str + (str ? strlen (str) : 0)); | |
822 | } | |
823 | ||
471854f8 | 824 | /* Maybe print out a whitespace if needed. */ |
b6fe0bb8 | 825 | |
b9b44fb9 GDR |
826 | void |
827 | pp_base_maybe_space (pretty_printer *pp) | |
828 | { | |
829 | if (pp_base (pp)->padding != pp_none) | |
830 | { | |
831 | pp_space (pp); | |
832 | pp_base (pp)->padding = pp_none; | |
833 | } | |
834 | } | |
a3af5087 JM |
835 | |
836 | /* Print the identifier ID to PRETTY-PRINTER. */ | |
837 | ||
838 | void | |
839 | pp_base_tree_identifier (pretty_printer *pp, tree id) | |
840 | { | |
f41c4af3 JM |
841 | if (pp_translate_identifiers (pp)) |
842 | { | |
843 | const char *text = identifier_to_locale (IDENTIFIER_POINTER (id)); | |
844 | pp_append_text (pp, text, text + strlen (text)); | |
845 | } | |
846 | else | |
847 | pp_append_text (pp, IDENTIFIER_POINTER (id), | |
848 | IDENTIFIER_POINTER (id) + IDENTIFIER_LENGTH (id)); | |
a3af5087 JM |
849 | } |
850 | \f | |
851 | /* The string starting at P has LEN (at least 1) bytes left; if they | |
852 | start with a valid UTF-8 sequence, return the length of that | |
853 | sequence and set *VALUE to the value of that sequence, and | |
854 | otherwise return 0 and set *VALUE to (unsigned int) -1. */ | |
855 | ||
856 | static int | |
857 | decode_utf8_char (const unsigned char *p, size_t len, unsigned int *value) | |
858 | { | |
859 | unsigned int t = *p; | |
860 | ||
861 | if (len == 0) | |
862 | abort (); | |
863 | if (t & 0x80) | |
864 | { | |
865 | size_t utf8_len = 0; | |
866 | unsigned int ch; | |
867 | size_t i; | |
868 | for (t = *p; t & 0x80; t <<= 1) | |
869 | utf8_len++; | |
870 | ||
871 | if (utf8_len > len || utf8_len < 2 || utf8_len > 6) | |
872 | { | |
873 | *value = (unsigned int) -1; | |
874 | return 0; | |
875 | } | |
876 | ch = *p & ((1 << (7 - utf8_len)) - 1); | |
877 | for (i = 1; i < utf8_len; i++) | |
878 | { | |
879 | unsigned int u = p[i]; | |
880 | if ((u & 0xC0) != 0x80) | |
881 | { | |
882 | *value = (unsigned int) -1; | |
883 | return 0; | |
884 | } | |
885 | ch = (ch << 6) | (u & 0x3F); | |
886 | } | |
887 | if ( (ch <= 0x7F && utf8_len > 1) | |
888 | || (ch <= 0x7FF && utf8_len > 2) | |
889 | || (ch <= 0xFFFF && utf8_len > 3) | |
890 | || (ch <= 0x1FFFFF && utf8_len > 4) | |
891 | || (ch <= 0x3FFFFFF && utf8_len > 5) | |
892 | || (ch >= 0xD800 && ch <= 0xDFFF)) | |
893 | { | |
894 | *value = (unsigned int) -1; | |
895 | return 0; | |
896 | } | |
897 | *value = ch; | |
898 | return utf8_len; | |
899 | } | |
900 | else | |
901 | { | |
902 | *value = t; | |
903 | return 1; | |
904 | } | |
905 | } | |
906 | ||
907 | /* Given IDENT, an identifier in the internal encoding, return a | |
908 | version of IDENT suitable for diagnostics in the locale character | |
909 | set: either IDENT itself, or a garbage-collected string converted | |
910 | to the locale character set and using escape sequences if not | |
911 | representable in the locale character set or containing control | |
912 | characters or invalid byte sequences. Existing backslashes in | |
913 | IDENT are not doubled, so the result may not uniquely specify the | |
914 | contents of an arbitrary byte sequence identifier. */ | |
915 | ||
916 | const char * | |
917 | identifier_to_locale (const char *ident) | |
918 | { | |
919 | const unsigned char *uid = (const unsigned char *) ident; | |
920 | size_t idlen = strlen (ident); | |
921 | bool valid_printable_utf8 = true; | |
922 | bool all_ascii = true; | |
923 | size_t i; | |
924 | ||
925 | for (i = 0; i < idlen;) | |
926 | { | |
927 | unsigned int c; | |
928 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
929 | if (utf8_len == 0 || c <= 0x1F || (c >= 0x7F && c <= 0x9F)) | |
930 | { | |
931 | valid_printable_utf8 = false; | |
932 | break; | |
933 | } | |
934 | if (utf8_len > 1) | |
935 | all_ascii = false; | |
936 | i += utf8_len; | |
937 | } | |
938 | ||
939 | /* If IDENT contains invalid UTF-8 sequences (which may occur with | |
940 | attributes putting arbitrary byte sequences in identifiers), or | |
941 | control characters, we use octal escape sequences for all bytes | |
942 | outside printable ASCII. */ | |
943 | if (!valid_printable_utf8) | |
944 | { | |
945 | char *ret = GGC_NEWVEC (char, 4 * idlen + 1); | |
946 | char *p = ret; | |
947 | for (i = 0; i < idlen; i++) | |
948 | { | |
949 | if (uid[i] > 0x1F && uid[i] < 0x7F) | |
950 | *p++ = uid[i]; | |
951 | else | |
952 | { | |
953 | sprintf (p, "\\%03o", uid[i]); | |
954 | p += 4; | |
955 | } | |
956 | } | |
957 | *p = 0; | |
958 | return ret; | |
959 | } | |
960 | ||
961 | /* Otherwise, if it is valid printable ASCII, or printable UTF-8 | |
962 | with the locale character set being UTF-8, IDENT is used. */ | |
963 | if (all_ascii || locale_utf8) | |
964 | return ident; | |
965 | ||
966 | /* Otherwise IDENT is converted to the locale character set if | |
967 | possible. */ | |
968 | #if defined ENABLE_NLS && defined HAVE_LANGINFO_CODESET && HAVE_ICONV | |
969 | if (locale_encoding != NULL) | |
970 | { | |
971 | iconv_t cd = iconv_open (locale_encoding, "UTF-8"); | |
972 | bool conversion_ok = true; | |
973 | char *ret = NULL; | |
974 | if (cd != (iconv_t) -1) | |
975 | { | |
976 | size_t ret_alloc = 4 * idlen + 1; | |
977 | for (;;) | |
978 | { | |
979 | /* Repeat the whole conversion process as needed with | |
980 | larger buffers so non-reversible transformations can | |
981 | always be detected. */ | |
982 | ICONV_CONST char *inbuf = CONST_CAST (char *, ident); | |
983 | char *outbuf; | |
984 | size_t inbytesleft = idlen; | |
985 | size_t outbytesleft = ret_alloc - 1; | |
986 | size_t iconv_ret; | |
987 | ||
988 | ret = GGC_NEWVEC (char, ret_alloc); | |
989 | outbuf = ret; | |
990 | ||
991 | if (iconv (cd, 0, 0, 0, 0) == (size_t) -1) | |
992 | { | |
993 | conversion_ok = false; | |
994 | break; | |
995 | } | |
996 | ||
997 | iconv_ret = iconv (cd, &inbuf, &inbytesleft, | |
998 | &outbuf, &outbytesleft); | |
999 | if (iconv_ret == (size_t) -1 || inbytesleft != 0) | |
1000 | { | |
1001 | if (errno == E2BIG) | |
1002 | { | |
1003 | ret_alloc *= 2; | |
1004 | ggc_free (ret); | |
1005 | ret = NULL; | |
1006 | continue; | |
1007 | } | |
1008 | else | |
1009 | { | |
1010 | conversion_ok = false; | |
1011 | break; | |
1012 | } | |
1013 | } | |
1014 | else if (iconv_ret != 0) | |
1015 | { | |
1016 | conversion_ok = false; | |
1017 | break; | |
1018 | } | |
1019 | /* Return to initial shift state. */ | |
1020 | if (iconv (cd, 0, 0, &outbuf, &outbytesleft) == (size_t) -1) | |
1021 | { | |
1022 | if (errno == E2BIG) | |
1023 | { | |
1024 | ret_alloc *= 2; | |
1025 | ggc_free (ret); | |
1026 | ret = NULL; | |
1027 | continue; | |
1028 | } | |
1029 | else | |
1030 | { | |
1031 | conversion_ok = false; | |
1032 | break; | |
1033 | } | |
1034 | } | |
1035 | *outbuf = 0; | |
1036 | break; | |
1037 | } | |
1038 | iconv_close (cd); | |
1039 | if (conversion_ok) | |
1040 | return ret; | |
1041 | } | |
1042 | } | |
1043 | #endif | |
1044 | ||
1045 | /* Otherwise, convert non-ASCII characters in IDENT to UCNs. */ | |
1046 | { | |
1047 | char *ret = GGC_NEWVEC (char, 10 * idlen + 1); | |
1048 | char *p = ret; | |
1049 | for (i = 0; i < idlen;) | |
1050 | { | |
1051 | unsigned int c; | |
1052 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
1053 | if (utf8_len == 1) | |
1054 | *p++ = uid[i]; | |
1055 | else | |
1056 | { | |
1057 | sprintf (p, "\\U%08x", c); | |
1058 | p += 10; | |
1059 | } | |
1060 | i += utf8_len; | |
1061 | } | |
1062 | *p = 0; | |
1063 | return ret; | |
1064 | } | |
1065 | } |