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annotate gcc/pretty-print.h @ 141:ce508c72660f
copy cbc flang in cfgexpand
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Thu, 22 Nov 2018 19:44:39 +0900 |
parents | 84e7813d76e9 |
children | 1830386684a0 |
rev | line source |
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0 | 1 /* Various declarations for language-independent pretty-print subroutines. |
131 | 2 Copyright (C) 2002-2018 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. */ | |
111 | 77 struct output_buffer |
0 | 78 { |
111 | 79 output_buffer (); |
80 ~output_buffer (); | |
81 | |
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82 /* Obstack where the text is built up. */ |
0 | 83 struct obstack formatted_obstack; |
84 | |
85 /* Obstack containing a chunked representation of the format | |
86 specification plus arguments. */ | |
87 struct obstack chunk_obstack; | |
88 | |
89 /* Currently active obstack: one of the above two. This is used so | |
90 that the text formatters don't need to know which phase we're in. */ | |
91 struct obstack *obstack; | |
92 | |
93 /* Stack of chunk arrays. These come from the chunk_obstack. */ | |
94 struct chunk_info *cur_chunk_array; | |
95 | |
96 /* Where to output formatted text. */ | |
97 FILE *stream; | |
98 | |
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99 /* The amount of characters output so far. */ |
0 | 100 int line_length; |
101 | |
102 /* This must be large enough to hold any printed integer or | |
103 floating-point value. */ | |
104 char digit_buffer[128]; | |
111 | 105 |
106 /* Nonzero means that text should be flushed when | |
107 appropriate. Otherwise, text is buffered until either | |
108 pp_really_flush or pp_clear_output_area are called. */ | |
109 bool flush_p; | |
110 }; | |
111 | |
112 /* Finishes constructing a NULL-terminated character string representing | |
113 the buffered text. */ | |
114 static inline const char * | |
115 output_buffer_formatted_text (output_buffer *buff) | |
116 { | |
117 obstack_1grow (buff->obstack, '\0'); | |
118 return (const char *) obstack_base (buff->obstack); | |
119 } | |
120 | |
121 /* Append to the output buffer a string specified by its | |
122 STARTing character and LENGTH. */ | |
123 static inline void | |
124 output_buffer_append_r (output_buffer *buff, const char *start, int length) | |
125 { | |
126 gcc_checking_assert (start); | |
127 obstack_grow (buff->obstack, start, length); | |
128 for (int i = 0; i < length; i++) | |
129 if (start[i] == '\n') | |
130 buff->line_length = 0; | |
131 else | |
132 buff->line_length++; | |
133 } | |
134 | |
135 /* Return a pointer to the last character emitted in the | |
136 output_buffer. A NULL pointer means no character available. */ | |
137 static inline const char * | |
138 output_buffer_last_position_in_text (const output_buffer *buff) | |
139 { | |
140 const char *p = NULL; | |
141 struct obstack *text = buff->obstack; | |
142 | |
143 if (obstack_base (text) != obstack_next_free (text)) | |
144 p = ((const char *) obstack_next_free (text)) - 1; | |
145 return p; | |
146 } | |
147 | |
0 | 148 |
149 /* The type of pretty-printer flags passed to clients. */ | |
150 typedef unsigned int pp_flags; | |
151 | |
111 | 152 enum pp_padding |
0 | 153 { |
154 pp_none, pp_before, pp_after | |
111 | 155 }; |
0 | 156 |
157 /* Structure for switching in and out of verbatim mode in a convenient | |
158 manner. */ | |
111 | 159 struct pp_wrapping_mode_t |
0 | 160 { |
161 /* Current prefixing rule. */ | |
162 diagnostic_prefixing_rule_t rule; | |
163 | |
164 /* The ideal upper bound of number of characters per line, as suggested | |
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165 by front-end. */ |
0 | 166 int line_cutoff; |
111 | 167 }; |
0 | 168 |
169 /* Maximum characters per line in automatic line wrapping mode. | |
170 Zero means don't wrap lines. */ | |
111 | 171 #define pp_line_cutoff(PP) (PP)->wrapping.line_cutoff |
0 | 172 |
173 /* Prefixing rule used in formatting a diagnostic message. */ | |
111 | 174 #define pp_prefixing_rule(PP) (PP)->wrapping.rule |
0 | 175 |
176 /* Get or set the wrapping mode as a single entity. */ | |
111 | 177 #define pp_wrapping_mode(PP) (PP)->wrapping |
0 | 178 |
111 | 179 /* The type of a hook that formats client-specific data onto a pretty_printer. |
0 | 180 A client-supplied formatter returns true if everything goes well, |
181 otherwise it returns false. */ | |
182 typedef bool (*printer_fn) (pretty_printer *, text_info *, const char *, | |
131 | 183 int, bool, bool, bool, bool *, const char **); |
0 | 184 |
185 /* Client supplied function used to decode formats. */ | |
111 | 186 #define pp_format_decoder(PP) (PP)->format_decoder |
187 | |
188 /* Base class for an optional client-supplied object for doing additional | |
189 processing between stages 2 and 3 of formatted printing. */ | |
190 class format_postprocessor | |
191 { | |
192 public: | |
193 virtual ~format_postprocessor () {} | |
194 virtual void handle (pretty_printer *) = 0; | |
195 }; | |
0 | 196 |
197 /* TRUE if a newline character needs to be added before further | |
198 formatting. */ | |
111 | 199 #define pp_needs_newline(PP) (PP)->need_newline |
0 | 200 |
201 /* True if PRETTY-PRINTER is in line-wrapping mode. */ | |
202 #define pp_is_wrapping_line(PP) (pp_line_cutoff (PP) > 0) | |
203 | |
204 /* The amount of whitespace to be emitted when starting a new line. */ | |
111 | 205 #define pp_indentation(PP) (PP)->indent_skip |
0 | 206 |
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207 /* True if identifiers are translated to the locale character set on |
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208 output. */ |
111 | 209 #define pp_translate_identifiers(PP) (PP)->translate_identifiers |
210 | |
211 /* True if colors should be shown. */ | |
212 #define pp_show_color(PP) (PP)->show_color | |
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213 |
0 | 214 /* The data structure that contains the bare minimum required to do |
215 proper pretty-printing. Clients may derived from this structure | |
216 and add additional fields they need. */ | |
111 | 217 struct pretty_printer |
0 | 218 { |
131 | 219 /* Default construct a pretty printer with specified |
220 maximum line length cut off limit. */ | |
221 explicit pretty_printer (int = 0); | |
111 | 222 |
223 virtual ~pretty_printer (); | |
224 | |
0 | 225 /* Where we print external representation of ENTITY. */ |
226 output_buffer *buffer; | |
227 | |
131 | 228 /* The prefix for each new line. If non-NULL, this is "owned" by the |
229 pretty_printer, and will eventually be free-ed. */ | |
230 char *prefix; | |
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231 |
0 | 232 /* Where to put whitespace around the entity being formatted. */ |
233 pp_padding padding; | |
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234 |
0 | 235 /* The real upper bound of number of characters per line, taking into |
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236 account the case of a very very looong prefix. */ |
0 | 237 int maximum_length; |
238 | |
239 /* Indentation count. */ | |
240 int indent_skip; | |
241 | |
242 /* Current wrapping mode. */ | |
243 pp_wrapping_mode_t wrapping; | |
244 | |
245 /* If non-NULL, this function formats a TEXT into the BUFFER. When called, | |
246 TEXT->format_spec points to a format code. FORMAT_DECODER should call | |
247 pp_string (and related functions) to add data to the BUFFER. | |
248 FORMAT_DECODER can read arguments from *TEXT->args_pts using VA_ARG. | |
249 If the BUFFER needs additional characters from the format string, it | |
250 should advance the TEXT->format_spec as it goes. When FORMAT_DECODER | |
251 returns, TEXT->format_spec should point to the last character processed. | |
111 | 252 The QUOTE and BUFFER_PTR are passed in, to allow for deferring-handling |
253 of format codes (e.g. %H and %I in the C++ frontend). */ | |
0 | 254 printer_fn format_decoder; |
255 | |
111 | 256 /* If non-NULL, this is called by pp_format once after all format codes |
257 have been processed, to allow for client-specific postprocessing. | |
258 This is used by the C++ frontend for handling the %H and %I | |
259 format codes (which interract with each other). */ | |
260 format_postprocessor *m_format_postprocessor; | |
261 | |
0 | 262 /* Nonzero if current PREFIX was emitted at least once. */ |
263 bool emitted_prefix; | |
264 | |
265 /* Nonzero means one should emit a newline before outputting anything. */ | |
266 bool need_newline; | |
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267 |
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268 /* Nonzero means identifiers are translated to the locale character |
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269 set on output. */ |
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270 bool translate_identifiers; |
111 | 271 |
272 /* Nonzero means that text should be colorized. */ | |
273 bool show_color; | |
0 | 274 }; |
275 | |
111 | 276 static inline const char * |
277 pp_get_prefix (const pretty_printer *pp) { return pp->prefix; } | |
0 | 278 |
279 #define pp_space(PP) pp_character (PP, ' ') | |
280 #define pp_left_paren(PP) pp_character (PP, '(') | |
281 #define pp_right_paren(PP) pp_character (PP, ')') | |
282 #define pp_left_bracket(PP) pp_character (PP, '[') | |
283 #define pp_right_bracket(PP) pp_character (PP, ']') | |
284 #define pp_left_brace(PP) pp_character (PP, '{') | |
285 #define pp_right_brace(PP) pp_character (PP, '}') | |
286 #define pp_semicolon(PP) pp_character (PP, ';') | |
111 | 287 #define pp_comma(PP) pp_character (PP, ',') |
0 | 288 #define pp_dot(PP) pp_character (PP, '.') |
289 #define pp_colon(PP) pp_character (PP, ':') | |
290 #define pp_colon_colon(PP) pp_string (PP, "::") | |
291 #define pp_arrow(PP) pp_string (PP, "->") | |
292 #define pp_equal(PP) pp_character (PP, '=') | |
293 #define pp_question(PP) pp_character (PP, '?') | |
294 #define pp_bar(PP) pp_character (PP, '|') | |
111 | 295 #define pp_bar_bar(PP) pp_string (PP, "||") |
0 | 296 #define pp_carret(PP) pp_character (PP, '^') |
297 #define pp_ampersand(PP) pp_character (PP, '&') | |
111 | 298 #define pp_ampersand_ampersand(PP) pp_string (PP, "&&") |
0 | 299 #define pp_less(PP) pp_character (PP, '<') |
111 | 300 #define pp_less_equal(PP) pp_string (PP, "<=") |
0 | 301 #define pp_greater(PP) pp_character (PP, '>') |
111 | 302 #define pp_greater_equal(PP) pp_string (PP, ">=") |
0 | 303 #define pp_plus(PP) pp_character (PP, '+') |
304 #define pp_minus(PP) pp_character (PP, '-') | |
305 #define pp_star(PP) pp_character (PP, '*') | |
306 #define pp_slash(PP) pp_character (PP, '/') | |
307 #define pp_modulo(PP) pp_character (PP, '%') | |
308 #define pp_exclamation(PP) pp_character (PP, '!') | |
309 #define pp_complement(PP) pp_character (PP, '~') | |
310 #define pp_quote(PP) pp_character (PP, '\'') | |
311 #define pp_backquote(PP) pp_character (PP, '`') | |
312 #define pp_doublequote(PP) pp_character (PP, '"') | |
111 | 313 #define pp_underscore(PP) pp_character (PP, '_') |
0 | 314 #define pp_maybe_newline_and_indent(PP, N) \ |
315 if (pp_needs_newline (PP)) pp_newline_and_indent (PP, N) | |
316 #define pp_scalar(PP, FORMAT, SCALAR) \ | |
317 do \ | |
318 { \ | |
319 sprintf (pp_buffer (PP)->digit_buffer, FORMAT, SCALAR); \ | |
320 pp_string (PP, pp_buffer (PP)->digit_buffer); \ | |
321 } \ | |
322 while (0) | |
323 #define pp_decimal_int(PP, I) pp_scalar (PP, "%d", I) | |
111 | 324 #define pp_unsigned_wide_integer(PP, I) \ |
325 pp_scalar (PP, HOST_WIDE_INT_PRINT_UNSIGNED, (unsigned HOST_WIDE_INT) I) | |
326 #define pp_wide_int(PP, W, SGN) \ | |
327 do \ | |
328 { \ | |
329 print_dec (W, pp_buffer (PP)->digit_buffer, SGN); \ | |
330 pp_string (PP, pp_buffer (PP)->digit_buffer); \ | |
331 } \ | |
332 while (0) | |
0 | 333 #define pp_pointer(PP, P) pp_scalar (PP, "%p", P) |
334 | |
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335 #define pp_identifier(PP, ID) pp_string (PP, (pp_translate_identifiers (PP) \ |
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336 ? identifier_to_locale (ID) \ |
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337 : (ID))) |
0 | 338 |
339 | |
111 | 340 #define pp_buffer(PP) (PP)->buffer |
0 | 341 |
111 | 342 extern void pp_set_line_maximum_length (pretty_printer *, int); |
131 | 343 extern void pp_set_prefix (pretty_printer *, char *); |
344 extern char *pp_take_prefix (pretty_printer *); | |
111 | 345 extern void pp_destroy_prefix (pretty_printer *); |
346 extern int pp_remaining_character_count_for_line (pretty_printer *); | |
347 extern void pp_clear_output_area (pretty_printer *); | |
348 extern const char *pp_formatted_text (pretty_printer *); | |
349 extern const char *pp_last_position_in_text (const pretty_printer *); | |
350 extern void pp_emit_prefix (pretty_printer *); | |
351 extern void pp_append_text (pretty_printer *, const char *, const char *); | |
352 extern void pp_newline_and_flush (pretty_printer *); | |
353 extern void pp_newline_and_indent (pretty_printer *, int); | |
354 extern void pp_separate_with (pretty_printer *, char); | |
355 | |
356 /* If we haven't already defined a front-end-specific diagnostics | |
357 style, use the generic one. */ | |
358 #ifdef GCC_DIAG_STYLE | |
359 #define GCC_PPDIAG_STYLE GCC_DIAG_STYLE | |
360 #else | |
361 #define GCC_PPDIAG_STYLE __gcc_diag__ | |
362 #endif | |
0 | 363 |
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364 /* This header may be included before diagnostics-core.h, hence the duplicate |
0 | 365 definitions to allow for GCC-specific formats. */ |
366 #if GCC_VERSION >= 3005 | |
111 | 367 #define ATTRIBUTE_GCC_PPDIAG(m, n) __attribute__ ((__format__ (GCC_PPDIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m) |
0 | 368 #else |
369 #define ATTRIBUTE_GCC_PPDIAG(m, n) ATTRIBUTE_NONNULL(m) | |
370 #endif | |
371 extern void pp_printf (pretty_printer *, const char *, ...) | |
372 ATTRIBUTE_GCC_PPDIAG(2,3); | |
373 | |
374 extern void pp_verbatim (pretty_printer *, const char *, ...) | |
375 ATTRIBUTE_GCC_PPDIAG(2,3); | |
111 | 376 extern void pp_flush (pretty_printer *); |
377 extern void pp_really_flush (pretty_printer *); | |
378 extern void pp_format (pretty_printer *, text_info *); | |
379 extern void pp_output_formatted_text (pretty_printer *); | |
380 extern void pp_format_verbatim (pretty_printer *, text_info *); | |
0 | 381 |
111 | 382 extern void pp_indent (pretty_printer *); |
383 extern void pp_newline (pretty_printer *); | |
384 extern void pp_character (pretty_printer *, int); | |
385 extern void pp_string (pretty_printer *, const char *); | |
386 extern void pp_write_text_to_stream (pretty_printer *); | |
387 extern void pp_write_text_as_dot_label_to_stream (pretty_printer *, bool); | |
388 extern void pp_maybe_space (pretty_printer *); | |
0 | 389 |
131 | 390 extern void pp_begin_quote (pretty_printer *, bool); |
391 extern void pp_end_quote (pretty_printer *, bool); | |
392 | |
0 | 393 /* Switch into verbatim mode and return the old mode. */ |
394 static inline pp_wrapping_mode_t | |
395 pp_set_verbatim_wrapping_ (pretty_printer *pp) | |
396 { | |
397 pp_wrapping_mode_t oldmode = pp_wrapping_mode (pp); | |
398 pp_line_cutoff (pp) = 0; | |
399 pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_NEVER; | |
400 return oldmode; | |
401 } | |
111 | 402 #define pp_set_verbatim_wrapping(PP) pp_set_verbatim_wrapping_ (PP) |
0 | 403 |
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404 extern const char *identifier_to_locale (const char *); |
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405 extern void *(*identifier_to_locale_alloc) (size_t); |
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406 extern void (*identifier_to_locale_free) (void *); |
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407 |
131 | 408 /* Print I to PP in decimal. */ |
409 | |
410 inline void | |
411 pp_wide_integer (pretty_printer *pp, HOST_WIDE_INT i) | |
412 { | |
413 pp_scalar (pp, HOST_WIDE_INT_PRINT_DEC, i); | |
414 } | |
415 | |
416 template<unsigned int N, typename T> | |
417 void pp_wide_integer (pretty_printer *pp, const poly_int_pod<N, T> &); | |
418 | |
0 | 419 #endif /* GCC_PRETTY_PRINT_H */ |