Mercurial > hg > CbC > CbC_gcc
annotate gcc/pretty-print.h @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 84e7813d76e9 |
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0 | 1 /* Various declarations for language-independent pretty-print subroutines. |
145 | 2 Copyright (C) 2002-2020 Free Software Foundation, Inc. |
0 | 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 | |
9 Software Foundation; either version 3, or (at your option) any later | |
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 | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #ifndef GCC_PRETTY_PRINT_H | |
22 #define GCC_PRETTY_PRINT_H | |
23 | |
24 #include "obstack.h" | |
25 | |
26 /* Maximum number of format string arguments. */ | |
27 #define PP_NL_ARGMAX 30 | |
28 | |
29 /* The type of a text to be formatted according a format specification | |
30 along with a list of things. */ | |
111 | 31 struct text_info |
0 | 32 { |
33 const char *format_spec; | |
34 va_list *args_ptr; | |
35 int err_no; /* for %m */ | |
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36 void **x_data; |
111 | 37 rich_location *m_richloc; |
38 | |
131 | 39 void set_location (unsigned int idx, location_t loc, |
40 enum range_display_kind range_display_kind); | |
111 | 41 location_t get_location (unsigned int index_of_location) const; |
42 }; | |
0 | 43 |
44 /* How often diagnostics are prefixed by their locations: | |
45 o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported; | |
46 o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit only once; | |
47 o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit each time a physical | |
48 line is started. */ | |
111 | 49 enum diagnostic_prefixing_rule_t |
0 | 50 { |
51 DIAGNOSTICS_SHOW_PREFIX_ONCE = 0x0, | |
52 DIAGNOSTICS_SHOW_PREFIX_NEVER = 0x1, | |
53 DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE = 0x2 | |
111 | 54 }; |
0 | 55 |
56 /* The chunk_info data structure forms a stack of the results from the | |
111 | 57 first phase of formatting (pp_format) which have not yet been |
58 output (pp_output_formatted_text). A stack is necessary because | |
0 | 59 the diagnostic starter may decide to generate its own output by way |
60 of the formatter. */ | |
61 struct chunk_info | |
62 { | |
63 /* Pointer to previous chunk on the stack. */ | |
64 struct chunk_info *prev; | |
65 | |
66 /* Array of chunks to output. Each chunk is a NUL-terminated string. | |
67 In the first phase of formatting, even-numbered chunks are | |
68 to be output verbatim, odd-numbered chunks are format specifiers. | |
69 The second phase replaces all odd-numbered chunks with formatted | |
70 text, and the third phase simply emits all the chunks in sequence | |
71 with appropriate line-wrapping. */ | |
72 const char *args[PP_NL_ARGMAX * 2]; | |
73 }; | |
74 | |
75 /* The output buffer datatype. This is best seen as an abstract datatype | |
76 whose fields should not be accessed directly by clients. */ | |
145 | 77 class output_buffer |
0 | 78 { |
145 | 79 public: |
111 | 80 output_buffer (); |
81 ~output_buffer (); | |
82 | |
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83 /* Obstack where the text is built up. */ |
0 | 84 struct obstack formatted_obstack; |
85 | |
86 /* Obstack containing a chunked representation of the format | |
87 specification plus arguments. */ | |
88 struct obstack chunk_obstack; | |
89 | |
90 /* Currently active obstack: one of the above two. This is used so | |
91 that the text formatters don't need to know which phase we're in. */ | |
92 struct obstack *obstack; | |
93 | |
94 /* Stack of chunk arrays. These come from the chunk_obstack. */ | |
95 struct chunk_info *cur_chunk_array; | |
96 | |
97 /* Where to output formatted text. */ | |
98 FILE *stream; | |
99 | |
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100 /* The amount of characters output so far. */ |
0 | 101 int line_length; |
102 | |
103 /* This must be large enough to hold any printed integer or | |
104 floating-point value. */ | |
105 char digit_buffer[128]; | |
111 | 106 |
107 /* Nonzero means that text should be flushed when | |
108 appropriate. Otherwise, text is buffered until either | |
109 pp_really_flush or pp_clear_output_area are called. */ | |
110 bool flush_p; | |
111 }; | |
112 | |
113 /* Finishes constructing a NULL-terminated character string representing | |
114 the buffered text. */ | |
115 static inline const char * | |
116 output_buffer_formatted_text (output_buffer *buff) | |
117 { | |
118 obstack_1grow (buff->obstack, '\0'); | |
119 return (const char *) obstack_base (buff->obstack); | |
120 } | |
121 | |
122 /* Append to the output buffer a string specified by its | |
123 STARTing character and LENGTH. */ | |
124 static inline void | |
125 output_buffer_append_r (output_buffer *buff, const char *start, int length) | |
126 { | |
127 gcc_checking_assert (start); | |
128 obstack_grow (buff->obstack, start, length); | |
129 for (int i = 0; i < length; i++) | |
130 if (start[i] == '\n') | |
131 buff->line_length = 0; | |
132 else | |
133 buff->line_length++; | |
134 } | |
135 | |
136 /* Return a pointer to the last character emitted in the | |
137 output_buffer. A NULL pointer means no character available. */ | |
138 static inline const char * | |
139 output_buffer_last_position_in_text (const output_buffer *buff) | |
140 { | |
141 const char *p = NULL; | |
142 struct obstack *text = buff->obstack; | |
143 | |
144 if (obstack_base (text) != obstack_next_free (text)) | |
145 p = ((const char *) obstack_next_free (text)) - 1; | |
146 return p; | |
147 } | |
148 | |
0 | 149 |
150 /* The type of pretty-printer flags passed to clients. */ | |
151 typedef unsigned int pp_flags; | |
152 | |
111 | 153 enum pp_padding |
0 | 154 { |
155 pp_none, pp_before, pp_after | |
111 | 156 }; |
0 | 157 |
158 /* Structure for switching in and out of verbatim mode in a convenient | |
159 manner. */ | |
111 | 160 struct pp_wrapping_mode_t |
0 | 161 { |
162 /* Current prefixing rule. */ | |
163 diagnostic_prefixing_rule_t rule; | |
164 | |
165 /* The ideal upper bound of number of characters per line, as suggested | |
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166 by front-end. */ |
0 | 167 int line_cutoff; |
111 | 168 }; |
0 | 169 |
170 /* Maximum characters per line in automatic line wrapping mode. | |
171 Zero means don't wrap lines. */ | |
111 | 172 #define pp_line_cutoff(PP) (PP)->wrapping.line_cutoff |
0 | 173 |
174 /* Prefixing rule used in formatting a diagnostic message. */ | |
111 | 175 #define pp_prefixing_rule(PP) (PP)->wrapping.rule |
0 | 176 |
177 /* Get or set the wrapping mode as a single entity. */ | |
111 | 178 #define pp_wrapping_mode(PP) (PP)->wrapping |
0 | 179 |
111 | 180 /* The type of a hook that formats client-specific data onto a pretty_printer. |
0 | 181 A client-supplied formatter returns true if everything goes well, |
182 otherwise it returns false. */ | |
183 typedef bool (*printer_fn) (pretty_printer *, text_info *, const char *, | |
131 | 184 int, bool, bool, bool, bool *, const char **); |
0 | 185 |
186 /* Client supplied function used to decode formats. */ | |
111 | 187 #define pp_format_decoder(PP) (PP)->format_decoder |
188 | |
189 /* Base class for an optional client-supplied object for doing additional | |
190 processing between stages 2 and 3 of formatted printing. */ | |
191 class format_postprocessor | |
192 { | |
193 public: | |
194 virtual ~format_postprocessor () {} | |
145 | 195 virtual format_postprocessor *clone() const = 0; |
111 | 196 virtual void handle (pretty_printer *) = 0; |
197 }; | |
0 | 198 |
199 /* TRUE if a newline character needs to be added before further | |
200 formatting. */ | |
111 | 201 #define pp_needs_newline(PP) (PP)->need_newline |
0 | 202 |
203 /* True if PRETTY-PRINTER is in line-wrapping mode. */ | |
204 #define pp_is_wrapping_line(PP) (pp_line_cutoff (PP) > 0) | |
205 | |
206 /* The amount of whitespace to be emitted when starting a new line. */ | |
111 | 207 #define pp_indentation(PP) (PP)->indent_skip |
0 | 208 |
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209 /* True if identifiers are translated to the locale character set on |
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210 output. */ |
111 | 211 #define pp_translate_identifiers(PP) (PP)->translate_identifiers |
212 | |
213 /* True if colors should be shown. */ | |
214 #define pp_show_color(PP) (PP)->show_color | |
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215 |
0 | 216 /* The data structure that contains the bare minimum required to do |
217 proper pretty-printing. Clients may derived from this structure | |
218 and add additional fields they need. */ | |
145 | 219 class pretty_printer |
0 | 220 { |
145 | 221 public: |
131 | 222 /* Default construct a pretty printer with specified |
223 maximum line length cut off limit. */ | |
224 explicit pretty_printer (int = 0); | |
145 | 225 explicit pretty_printer (const pretty_printer &other); |
111 | 226 |
227 virtual ~pretty_printer (); | |
228 | |
145 | 229 virtual pretty_printer *clone () const; |
230 | |
0 | 231 /* Where we print external representation of ENTITY. */ |
232 output_buffer *buffer; | |
233 | |
131 | 234 /* The prefix for each new line. If non-NULL, this is "owned" by the |
235 pretty_printer, and will eventually be free-ed. */ | |
236 char *prefix; | |
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237 |
0 | 238 /* Where to put whitespace around the entity being formatted. */ |
239 pp_padding padding; | |
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240 |
0 | 241 /* The real upper bound of number of characters per line, taking into |
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242 account the case of a very very looong prefix. */ |
0 | 243 int maximum_length; |
244 | |
245 /* Indentation count. */ | |
246 int indent_skip; | |
247 | |
248 /* Current wrapping mode. */ | |
249 pp_wrapping_mode_t wrapping; | |
250 | |
251 /* If non-NULL, this function formats a TEXT into the BUFFER. When called, | |
252 TEXT->format_spec points to a format code. FORMAT_DECODER should call | |
253 pp_string (and related functions) to add data to the BUFFER. | |
254 FORMAT_DECODER can read arguments from *TEXT->args_pts using VA_ARG. | |
255 If the BUFFER needs additional characters from the format string, it | |
256 should advance the TEXT->format_spec as it goes. When FORMAT_DECODER | |
257 returns, TEXT->format_spec should point to the last character processed. | |
111 | 258 The QUOTE and BUFFER_PTR are passed in, to allow for deferring-handling |
259 of format codes (e.g. %H and %I in the C++ frontend). */ | |
0 | 260 printer_fn format_decoder; |
261 | |
111 | 262 /* If non-NULL, this is called by pp_format once after all format codes |
263 have been processed, to allow for client-specific postprocessing. | |
264 This is used by the C++ frontend for handling the %H and %I | |
265 format codes (which interract with each other). */ | |
266 format_postprocessor *m_format_postprocessor; | |
267 | |
0 | 268 /* Nonzero if current PREFIX was emitted at least once. */ |
269 bool emitted_prefix; | |
270 | |
271 /* Nonzero means one should emit a newline before outputting anything. */ | |
272 bool need_newline; | |
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273 |
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274 /* Nonzero means identifiers are translated to the locale character |
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275 set on output. */ |
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276 bool translate_identifiers; |
111 | 277 |
278 /* Nonzero means that text should be colorized. */ | |
279 bool show_color; | |
145 | 280 |
281 /* Nonzero means that URLs should be emitted. */ | |
282 bool show_urls; | |
0 | 283 }; |
284 | |
111 | 285 static inline const char * |
286 pp_get_prefix (const pretty_printer *pp) { return pp->prefix; } | |
0 | 287 |
288 #define pp_space(PP) pp_character (PP, ' ') | |
289 #define pp_left_paren(PP) pp_character (PP, '(') | |
290 #define pp_right_paren(PP) pp_character (PP, ')') | |
291 #define pp_left_bracket(PP) pp_character (PP, '[') | |
292 #define pp_right_bracket(PP) pp_character (PP, ']') | |
293 #define pp_left_brace(PP) pp_character (PP, '{') | |
294 #define pp_right_brace(PP) pp_character (PP, '}') | |
295 #define pp_semicolon(PP) pp_character (PP, ';') | |
111 | 296 #define pp_comma(PP) pp_character (PP, ',') |
0 | 297 #define pp_dot(PP) pp_character (PP, '.') |
298 #define pp_colon(PP) pp_character (PP, ':') | |
299 #define pp_colon_colon(PP) pp_string (PP, "::") | |
300 #define pp_arrow(PP) pp_string (PP, "->") | |
301 #define pp_equal(PP) pp_character (PP, '=') | |
302 #define pp_question(PP) pp_character (PP, '?') | |
303 #define pp_bar(PP) pp_character (PP, '|') | |
111 | 304 #define pp_bar_bar(PP) pp_string (PP, "||") |
0 | 305 #define pp_carret(PP) pp_character (PP, '^') |
306 #define pp_ampersand(PP) pp_character (PP, '&') | |
111 | 307 #define pp_ampersand_ampersand(PP) pp_string (PP, "&&") |
0 | 308 #define pp_less(PP) pp_character (PP, '<') |
111 | 309 #define pp_less_equal(PP) pp_string (PP, "<=") |
0 | 310 #define pp_greater(PP) pp_character (PP, '>') |
111 | 311 #define pp_greater_equal(PP) pp_string (PP, ">=") |
0 | 312 #define pp_plus(PP) pp_character (PP, '+') |
313 #define pp_minus(PP) pp_character (PP, '-') | |
314 #define pp_star(PP) pp_character (PP, '*') | |
315 #define pp_slash(PP) pp_character (PP, '/') | |
316 #define pp_modulo(PP) pp_character (PP, '%') | |
317 #define pp_exclamation(PP) pp_character (PP, '!') | |
318 #define pp_complement(PP) pp_character (PP, '~') | |
319 #define pp_quote(PP) pp_character (PP, '\'') | |
320 #define pp_backquote(PP) pp_character (PP, '`') | |
321 #define pp_doublequote(PP) pp_character (PP, '"') | |
111 | 322 #define pp_underscore(PP) pp_character (PP, '_') |
0 | 323 #define pp_maybe_newline_and_indent(PP, N) \ |
324 if (pp_needs_newline (PP)) pp_newline_and_indent (PP, N) | |
325 #define pp_scalar(PP, FORMAT, SCALAR) \ | |
326 do \ | |
327 { \ | |
328 sprintf (pp_buffer (PP)->digit_buffer, FORMAT, SCALAR); \ | |
329 pp_string (PP, pp_buffer (PP)->digit_buffer); \ | |
330 } \ | |
331 while (0) | |
332 #define pp_decimal_int(PP, I) pp_scalar (PP, "%d", I) | |
111 | 333 #define pp_unsigned_wide_integer(PP, I) \ |
334 pp_scalar (PP, HOST_WIDE_INT_PRINT_UNSIGNED, (unsigned HOST_WIDE_INT) I) | |
335 #define pp_wide_int(PP, W, SGN) \ | |
336 do \ | |
337 { \ | |
338 print_dec (W, pp_buffer (PP)->digit_buffer, SGN); \ | |
339 pp_string (PP, pp_buffer (PP)->digit_buffer); \ | |
340 } \ | |
341 while (0) | |
145 | 342 #define pp_double(PP, F) pp_scalar (PP, "%f", F) |
0 | 343 #define pp_pointer(PP, P) pp_scalar (PP, "%p", P) |
344 | |
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345 #define pp_identifier(PP, ID) pp_string (PP, (pp_translate_identifiers (PP) \ |
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346 ? identifier_to_locale (ID) \ |
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347 : (ID))) |
0 | 348 |
349 | |
111 | 350 #define pp_buffer(PP) (PP)->buffer |
0 | 351 |
111 | 352 extern void pp_set_line_maximum_length (pretty_printer *, int); |
131 | 353 extern void pp_set_prefix (pretty_printer *, char *); |
354 extern char *pp_take_prefix (pretty_printer *); | |
111 | 355 extern void pp_destroy_prefix (pretty_printer *); |
356 extern int pp_remaining_character_count_for_line (pretty_printer *); | |
357 extern void pp_clear_output_area (pretty_printer *); | |
358 extern const char *pp_formatted_text (pretty_printer *); | |
359 extern const char *pp_last_position_in_text (const pretty_printer *); | |
360 extern void pp_emit_prefix (pretty_printer *); | |
361 extern void pp_append_text (pretty_printer *, const char *, const char *); | |
362 extern void pp_newline_and_flush (pretty_printer *); | |
363 extern void pp_newline_and_indent (pretty_printer *, int); | |
364 extern void pp_separate_with (pretty_printer *, char); | |
365 | |
366 /* If we haven't already defined a front-end-specific diagnostics | |
367 style, use the generic one. */ | |
368 #ifdef GCC_DIAG_STYLE | |
369 #define GCC_PPDIAG_STYLE GCC_DIAG_STYLE | |
370 #else | |
371 #define GCC_PPDIAG_STYLE __gcc_diag__ | |
372 #endif | |
0 | 373 |
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374 /* This header may be included before diagnostics-core.h, hence the duplicate |
0 | 375 definitions to allow for GCC-specific formats. */ |
376 #if GCC_VERSION >= 3005 | |
111 | 377 #define ATTRIBUTE_GCC_PPDIAG(m, n) __attribute__ ((__format__ (GCC_PPDIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m) |
0 | 378 #else |
379 #define ATTRIBUTE_GCC_PPDIAG(m, n) ATTRIBUTE_NONNULL(m) | |
380 #endif | |
381 extern void pp_printf (pretty_printer *, const char *, ...) | |
382 ATTRIBUTE_GCC_PPDIAG(2,3); | |
383 | |
384 extern void pp_verbatim (pretty_printer *, const char *, ...) | |
385 ATTRIBUTE_GCC_PPDIAG(2,3); | |
111 | 386 extern void pp_flush (pretty_printer *); |
387 extern void pp_really_flush (pretty_printer *); | |
388 extern void pp_format (pretty_printer *, text_info *); | |
389 extern void pp_output_formatted_text (pretty_printer *); | |
390 extern void pp_format_verbatim (pretty_printer *, text_info *); | |
0 | 391 |
111 | 392 extern void pp_indent (pretty_printer *); |
393 extern void pp_newline (pretty_printer *); | |
394 extern void pp_character (pretty_printer *, int); | |
395 extern void pp_string (pretty_printer *, const char *); | |
145 | 396 |
111 | 397 extern void pp_write_text_to_stream (pretty_printer *); |
398 extern void pp_write_text_as_dot_label_to_stream (pretty_printer *, bool); | |
145 | 399 extern void pp_write_text_as_html_like_dot_to_stream (pretty_printer *pp); |
400 | |
111 | 401 extern void pp_maybe_space (pretty_printer *); |
0 | 402 |
131 | 403 extern void pp_begin_quote (pretty_printer *, bool); |
404 extern void pp_end_quote (pretty_printer *, bool); | |
405 | |
145 | 406 extern void pp_begin_url (pretty_printer *pp, const char *url); |
407 extern void pp_end_url (pretty_printer *pp); | |
408 | |
0 | 409 /* Switch into verbatim mode and return the old mode. */ |
410 static inline pp_wrapping_mode_t | |
411 pp_set_verbatim_wrapping_ (pretty_printer *pp) | |
412 { | |
413 pp_wrapping_mode_t oldmode = pp_wrapping_mode (pp); | |
414 pp_line_cutoff (pp) = 0; | |
415 pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_NEVER; | |
416 return oldmode; | |
417 } | |
111 | 418 #define pp_set_verbatim_wrapping(PP) pp_set_verbatim_wrapping_ (PP) |
0 | 419 |
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420 extern const char *identifier_to_locale (const char *); |
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421 extern void *(*identifier_to_locale_alloc) (size_t); |
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422 extern void (*identifier_to_locale_free) (void *); |
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423 |
131 | 424 /* Print I to PP in decimal. */ |
425 | |
426 inline void | |
427 pp_wide_integer (pretty_printer *pp, HOST_WIDE_INT i) | |
428 { | |
429 pp_scalar (pp, HOST_WIDE_INT_PRINT_DEC, i); | |
430 } | |
431 | |
432 template<unsigned int N, typename T> | |
433 void pp_wide_integer (pretty_printer *pp, const poly_int_pod<N, T> &); | |
434 | |
0 | 435 #endif /* GCC_PRETTY_PRINT_H */ |