Mercurial > hg > CbC > CbC_gcc
annotate libcpp/internal.h @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
rev | line source |
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0 | 1 /* Part of CPP library. |
131 | 2 Copyright (C) 1997-2018 Free Software Foundation, Inc. |
0 | 3 |
4 This program is free software; you can redistribute it and/or modify it | |
5 under the terms of the GNU General Public License as published by the | |
6 Free Software Foundation; either version 3, or (at your option) any | |
7 later version. | |
8 | |
9 This program is distributed in the hope that it will be useful, | |
10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 GNU General Public License for more details. | |
13 | |
14 You should have received a copy of the GNU General Public License | |
15 along with this program; see the file COPYING3. If not see | |
16 <http://www.gnu.org/licenses/>. */ | |
17 | |
18 /* This header defines all the internal data structures and functions | |
19 that need to be visible across files. It should not be used outside | |
20 cpplib. */ | |
21 | |
22 #ifndef LIBCPP_INTERNAL_H | |
23 #define LIBCPP_INTERNAL_H | |
24 | |
25 #include "symtab.h" | |
131 | 26 #include "cpplib.h" |
0 | 27 |
28 #if HAVE_ICONV | |
29 #include <iconv.h> | |
30 #else | |
31 #define HAVE_ICONV 0 | |
32 typedef int iconv_t; /* dummy */ | |
33 #endif | |
34 | |
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35 #ifdef __cplusplus |
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36 extern "C" { |
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37 #endif |
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38 |
0 | 39 struct directive; /* Deliberately incomplete. */ |
40 struct pending_option; | |
41 struct op; | |
42 struct _cpp_strbuf; | |
43 | |
44 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t, | |
45 struct _cpp_strbuf *); | |
46 struct cset_converter | |
47 { | |
48 convert_f func; | |
49 iconv_t cd; | |
50 int width; | |
51 }; | |
52 | |
53 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t)) | |
54 | |
55 /* Test if a sign is valid within a preprocessing number. */ | |
56 #define VALID_SIGN(c, prevc) \ | |
57 (((c) == '+' || (c) == '-') && \ | |
58 ((prevc) == 'e' || (prevc) == 'E' \ | |
59 || (((prevc) == 'p' || (prevc) == 'P') \ | |
60 && CPP_OPTION (pfile, extended_numbers)))) | |
61 | |
111 | 62 #define DIGIT_SEP(c) ((c) == '\'' && CPP_OPTION (pfile, digit_separators)) |
63 | |
0 | 64 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION) |
65 #define CPP_BUFFER(PFILE) ((PFILE)->buffer) | |
66 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base) | |
67 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur) | |
68 | |
69 #define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \ | |
70 const struct line_maps *line_table = PFILE->line_table; \ | |
111 | 71 const struct line_map_ordinary *map = \ |
72 LINEMAPS_LAST_ORDINARY_MAP (line_table); \ | |
0 | 73 linenum_type line = SOURCE_LINE (map, line_table->highest_line); \ |
74 linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \ | |
75 } while (0) | |
76 | |
77 /* Maximum nesting of cpp_buffers. We use a static limit, partly for | |
78 efficiency, and partly to limit runaway recursion. */ | |
79 #define CPP_STACK_MAX 200 | |
80 | |
81 /* Host alignment handling. */ | |
82 struct dummy | |
83 { | |
84 char c; | |
85 union | |
86 { | |
87 double d; | |
88 int *p; | |
89 } u; | |
90 }; | |
91 | |
92 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u) | |
93 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1)) | |
94 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT) | |
95 | |
131 | 96 #define _cpp_mark_macro_used(NODE) \ |
97 (cpp_user_macro_p (NODE) ? (NODE)->value.macro->used = 1 : 0) | |
0 | 98 |
99 /* A generic memory buffer, and operations on it. */ | |
100 typedef struct _cpp_buff _cpp_buff; | |
101 struct _cpp_buff | |
102 { | |
103 struct _cpp_buff *next; | |
104 unsigned char *base, *cur, *limit; | |
105 }; | |
106 | |
107 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t); | |
108 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *); | |
109 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t); | |
110 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t); | |
111 extern void _cpp_free_buff (_cpp_buff *); | |
112 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t); | |
113 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t); | |
114 | |
115 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur) | |
116 #define BUFF_FRONT(BUFF) ((BUFF)->cur) | |
117 #define BUFF_LIMIT(BUFF) ((BUFF)->limit) | |
118 | |
119 /* #include types. */ | |
111 | 120 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE, IT_DEFAULT}; |
0 | 121 |
122 union utoken | |
123 { | |
124 const cpp_token *token; | |
125 const cpp_token **ptoken; | |
126 }; | |
127 | |
128 /* A "run" of tokens; part of a chain of runs. */ | |
129 typedef struct tokenrun tokenrun; | |
130 struct tokenrun | |
131 { | |
132 tokenrun *next, *prev; | |
133 cpp_token *base, *limit; | |
134 }; | |
135 | |
136 /* Accessor macros for struct cpp_context. */ | |
137 #define FIRST(c) ((c)->u.iso.first) | |
138 #define LAST(c) ((c)->u.iso.last) | |
139 #define CUR(c) ((c)->u.trad.cur) | |
140 #define RLIMIT(c) ((c)->u.trad.rlimit) | |
141 | |
111 | 142 /* This describes some additional data that is added to the macro |
143 token context of type cpp_context, when -ftrack-macro-expansion is | |
144 on. */ | |
145 typedef struct | |
146 { | |
147 /* The node of the macro we are referring to. */ | |
148 cpp_hashnode *macro_node; | |
149 /* This buffer contains an array of virtual locations. The virtual | |
150 location at index 0 is the virtual location of the token at index | |
151 0 in the current instance of cpp_context; similarly for all the | |
152 other virtual locations. */ | |
153 source_location *virt_locs; | |
154 /* This is a pointer to the current virtual location. This is used | |
155 to iterate over the virtual locations while we iterate over the | |
156 tokens they belong to. */ | |
157 source_location *cur_virt_loc; | |
158 } macro_context; | |
159 | |
160 /* The kind of tokens carried by a cpp_context. */ | |
161 enum context_tokens_kind { | |
162 /* This is the value of cpp_context::tokens_kind if u.iso.first | |
163 contains an instance of cpp_token **. */ | |
164 TOKENS_KIND_INDIRECT, | |
165 /* This is the value of cpp_context::tokens_kind if u.iso.first | |
166 contains an instance of cpp_token *. */ | |
167 TOKENS_KIND_DIRECT, | |
168 /* This is the value of cpp_context::tokens_kind when the token | |
169 context contains tokens resulting from macro expansion. In that | |
170 case struct cpp_context::macro points to an instance of struct | |
171 macro_context. This is used only when the | |
172 -ftrack-macro-expansion flag is on. */ | |
173 TOKENS_KIND_EXTENDED | |
174 }; | |
175 | |
0 | 176 typedef struct cpp_context cpp_context; |
177 struct cpp_context | |
178 { | |
179 /* Doubly-linked list. */ | |
180 cpp_context *next, *prev; | |
181 | |
182 union | |
183 { | |
184 /* For ISO macro expansion. Contexts other than the base context | |
185 are contiguous tokens. e.g. macro expansions, expanded | |
186 argument tokens. */ | |
187 struct | |
188 { | |
189 union utoken first; | |
190 union utoken last; | |
191 } iso; | |
192 | |
193 /* For traditional macro expansion. */ | |
194 struct | |
195 { | |
196 const unsigned char *cur; | |
197 const unsigned char *rlimit; | |
198 } trad; | |
199 } u; | |
200 | |
201 /* If non-NULL, a buffer used for storage related to this context. | |
202 When the context is popped, the buffer is released. */ | |
203 _cpp_buff *buff; | |
204 | |
111 | 205 /* If tokens_kind is TOKEN_KIND_EXTENDED, then (as we thus are in a |
206 macro context) this is a pointer to an instance of macro_context. | |
207 Otherwise if tokens_kind is *not* TOKEN_KIND_EXTENDED, then, if | |
208 we are in a macro context, this is a pointer to an instance of | |
209 cpp_hashnode, representing the name of the macro this context is | |
210 for. If we are not in a macro context, then this is just NULL. | |
211 Note that when tokens_kind is TOKEN_KIND_EXTENDED, the memory | |
212 used by the instance of macro_context pointed to by this member | |
213 is de-allocated upon de-allocation of the instance of struct | |
214 cpp_context. */ | |
215 union | |
216 { | |
217 macro_context *mc; | |
218 cpp_hashnode *macro; | |
219 } c; | |
0 | 220 |
111 | 221 /* This determines the type of tokens held by this context. */ |
222 enum context_tokens_kind tokens_kind; | |
0 | 223 }; |
224 | |
225 struct lexer_state | |
226 { | |
227 /* Nonzero if first token on line is CPP_HASH. */ | |
228 unsigned char in_directive; | |
229 | |
230 /* Nonzero if in a directive that will handle padding tokens itself. | |
231 #include needs this to avoid problems with computed include and | |
232 spacing between tokens. */ | |
233 unsigned char directive_wants_padding; | |
234 | |
235 /* True if we are skipping a failed conditional group. */ | |
236 unsigned char skipping; | |
237 | |
238 /* Nonzero if in a directive that takes angle-bracketed headers. */ | |
239 unsigned char angled_headers; | |
240 | |
241 /* Nonzero if in a #if or #elif directive. */ | |
242 unsigned char in_expression; | |
243 | |
244 /* Nonzero to save comments. Turned off if discard_comments, and in | |
245 all directives apart from #define. */ | |
246 unsigned char save_comments; | |
247 | |
131 | 248 /* Nonzero if lexing __VA_ARGS__ and __VA_OPT__ are valid. */ |
0 | 249 unsigned char va_args_ok; |
250 | |
251 /* Nonzero if lexing poisoned identifiers is valid. */ | |
252 unsigned char poisoned_ok; | |
253 | |
254 /* Nonzero to prevent macro expansion. */ | |
255 unsigned char prevent_expansion; | |
256 | |
257 /* Nonzero when parsing arguments to a function-like macro. */ | |
258 unsigned char parsing_args; | |
259 | |
111 | 260 /* Nonzero if in a __has_include__ or __has_include_next__ statement. */ |
261 unsigned char in__has_include__; | |
262 | |
0 | 263 /* Nonzero if prevent_expansion is true only because output is |
264 being discarded. */ | |
265 unsigned char discarding_output; | |
266 | |
267 /* Nonzero to skip evaluating part of an expression. */ | |
268 unsigned int skip_eval; | |
269 | |
270 /* Nonzero when handling a deferred pragma. */ | |
271 unsigned char in_deferred_pragma; | |
272 | |
273 /* Nonzero if the deferred pragma being handled allows macro expansion. */ | |
274 unsigned char pragma_allow_expansion; | |
275 }; | |
276 | |
277 /* Special nodes - identifiers with predefined significance. */ | |
278 struct spec_nodes | |
279 { | |
280 cpp_hashnode *n_defined; /* defined operator */ | |
281 cpp_hashnode *n_true; /* C++ keyword true */ | |
282 cpp_hashnode *n_false; /* C++ keyword false */ | |
283 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */ | |
131 | 284 cpp_hashnode *n__VA_OPT__; /* C++ vararg macros */ |
111 | 285 cpp_hashnode *n__has_include__; /* __has_include__ operator */ |
286 cpp_hashnode *n__has_include_next__; /* __has_include_next__ operator */ | |
0 | 287 }; |
288 | |
289 typedef struct _cpp_line_note _cpp_line_note; | |
290 struct _cpp_line_note | |
291 { | |
292 /* Location in the clean line the note refers to. */ | |
293 const unsigned char *pos; | |
294 | |
295 /* Type of note. The 9 'from' trigraph characters represent those | |
296 trigraphs, '\\' an escaped newline, ' ' an escaped newline with | |
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297 intervening space, 0 represents a note that has already been handled, |
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298 and anything else is invalid. */ |
0 | 299 unsigned int type; |
300 }; | |
301 | |
302 /* Represents the contents of a file cpplib has read in. */ | |
303 struct cpp_buffer | |
304 { | |
305 const unsigned char *cur; /* Current location. */ | |
306 const unsigned char *line_base; /* Start of current physical line. */ | |
307 const unsigned char *next_line; /* Start of to-be-cleaned logical line. */ | |
308 | |
309 const unsigned char *buf; /* Entire character buffer. */ | |
310 const unsigned char *rlimit; /* Writable byte at end of file. */ | |
111 | 311 const unsigned char *to_free; /* Pointer that should be freed when |
312 popping the buffer. */ | |
0 | 313 |
314 _cpp_line_note *notes; /* Array of notes. */ | |
315 unsigned int cur_note; /* Next note to process. */ | |
316 unsigned int notes_used; /* Number of notes. */ | |
317 unsigned int notes_cap; /* Size of allocated array. */ | |
318 | |
319 struct cpp_buffer *prev; | |
320 | |
321 /* Pointer into the file table; non-NULL if this is a file buffer. | |
322 Used for include_next and to record control macros. */ | |
323 struct _cpp_file *file; | |
324 | |
325 /* Saved value of __TIMESTAMP__ macro - date and time of last modification | |
326 of the assotiated file. */ | |
327 const unsigned char *timestamp; | |
328 | |
329 /* Value of if_stack at start of this file. | |
330 Used to prohibit unmatched #endif (etc) in an include file. */ | |
331 struct if_stack *if_stack; | |
332 | |
333 /* True if we need to get the next clean line. */ | |
334 bool need_line; | |
335 | |
336 /* True if we have already warned about C++ comments in this file. | |
337 The warning happens only for C89 extended mode with -pedantic on, | |
338 or for -Wtraditional, and only once per file (otherwise it would | |
339 be far too noisy). */ | |
340 unsigned int warned_cplusplus_comments : 1; | |
341 | |
342 /* True if we don't process trigraphs and escaped newlines. True | |
343 for preprocessed input, command line directives, and _Pragma | |
344 buffers. */ | |
345 unsigned int from_stage3 : 1; | |
346 | |
347 /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is | |
348 true, a CPP_EOF token is then returned. Otherwise, the next | |
349 token from the enclosing buffer is returned. */ | |
350 unsigned int return_at_eof : 1; | |
351 | |
352 /* One for a system header, two for a C system header file that therefore | |
353 needs to be extern "C" protected in C++, and zero otherwise. */ | |
354 unsigned char sysp; | |
355 | |
356 /* The directory of the this buffer's file. Its NAME member is not | |
357 allocated, so we don't need to worry about freeing it. */ | |
358 struct cpp_dir dir; | |
359 | |
360 /* Descriptor for converting from the input character set to the | |
361 source character set. */ | |
362 struct cset_converter input_cset_desc; | |
363 }; | |
364 | |
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365 /* The list of saved macros by push_macro pragma. */ |
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366 struct def_pragma_macro { |
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367 /* Chain element to previous saved macro. */ |
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368 struct def_pragma_macro *next; |
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369 /* Name of the macro. */ |
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370 char *name; |
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371 /* The stored macro content. */ |
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372 unsigned char *definition; |
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373 |
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374 /* Definition line number. */ |
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375 source_location line; |
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376 /* If macro defined in system header. */ |
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377 unsigned int syshdr : 1; |
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378 /* Nonzero if it has been expanded or had its existence tested. */ |
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379 unsigned int used : 1; |
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380 |
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381 /* Mark if we save an undefined macro. */ |
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382 unsigned int is_undef : 1; |
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383 }; |
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384 |
0 | 385 /* A cpp_reader encapsulates the "state" of a pre-processor run. |
386 Applying cpp_get_token repeatedly yields a stream of pre-processor | |
387 tokens. Usually, there is only one cpp_reader object active. */ | |
388 struct cpp_reader | |
389 { | |
390 /* Top of buffer stack. */ | |
391 cpp_buffer *buffer; | |
392 | |
393 /* Overlaid buffer (can be different after processing #include). */ | |
394 cpp_buffer *overlaid_buffer; | |
395 | |
396 /* Lexer state. */ | |
397 struct lexer_state state; | |
398 | |
399 /* Source line tracking. */ | |
400 struct line_maps *line_table; | |
401 | |
402 /* The line of the '#' of the current directive. */ | |
403 source_location directive_line; | |
404 | |
405 /* Memory buffers. */ | |
406 _cpp_buff *a_buff; /* Aligned permanent storage. */ | |
407 _cpp_buff *u_buff; /* Unaligned permanent storage. */ | |
408 _cpp_buff *free_buffs; /* Free buffer chain. */ | |
409 | |
410 /* Context stack. */ | |
411 struct cpp_context base_context; | |
412 struct cpp_context *context; | |
413 | |
414 /* If in_directive, the directive if known. */ | |
415 const struct directive *directive; | |
416 | |
417 /* Token generated while handling a directive, if any. */ | |
418 cpp_token directive_result; | |
419 | |
420 /* When expanding a macro at top-level, this is the location of the | |
421 macro invocation. */ | |
422 source_location invocation_location; | |
423 | |
111 | 424 /* This is the node representing the macro being expanded at |
425 top-level. The value of this data member is valid iff | |
426 in_macro_expansion_p() returns TRUE. */ | |
427 cpp_hashnode *top_most_macro_node; | |
428 | |
429 /* Nonzero if we are about to expand a macro. Note that if we are | |
430 really expanding a macro, the function macro_of_context returns | |
431 the macro being expanded and this flag is set to false. Client | |
432 code should use the function in_macro_expansion_p to know if we | |
433 are either about to expand a macro, or are actually expanding | |
434 one. */ | |
435 bool about_to_expand_macro_p; | |
0 | 436 |
437 /* Search paths for include files. */ | |
438 struct cpp_dir *quote_include; /* "" */ | |
439 struct cpp_dir *bracket_include; /* <> */ | |
440 struct cpp_dir no_search_path; /* No path. */ | |
441 | |
442 /* Chain of all hashed _cpp_file instances. */ | |
443 struct _cpp_file *all_files; | |
444 | |
445 struct _cpp_file *main_file; | |
446 | |
447 /* File and directory hash table. */ | |
448 struct htab *file_hash; | |
449 struct htab *dir_hash; | |
450 struct file_hash_entry_pool *file_hash_entries; | |
451 | |
452 /* Negative path lookup hash table. */ | |
453 struct htab *nonexistent_file_hash; | |
454 struct obstack nonexistent_file_ob; | |
455 | |
456 /* Nonzero means don't look for #include "foo" the source-file | |
457 directory. */ | |
458 bool quote_ignores_source_dir; | |
459 | |
460 /* Nonzero if any file has contained #pragma once or #import has | |
461 been used. */ | |
462 bool seen_once_only; | |
463 | |
464 /* Multiple include optimization. */ | |
465 const cpp_hashnode *mi_cmacro; | |
466 const cpp_hashnode *mi_ind_cmacro; | |
467 bool mi_valid; | |
468 | |
469 /* Lexing. */ | |
470 cpp_token *cur_token; | |
471 tokenrun base_run, *cur_run; | |
472 unsigned int lookaheads; | |
473 | |
474 /* Nonzero prevents the lexer from re-using the token runs. */ | |
475 unsigned int keep_tokens; | |
476 | |
477 /* Buffer to hold macro definition string. */ | |
478 unsigned char *macro_buffer; | |
479 unsigned int macro_buffer_len; | |
480 | |
481 /* Descriptor for converting from the source character set to the | |
482 execution character set. */ | |
483 struct cset_converter narrow_cset_desc; | |
484 | |
485 /* Descriptor for converting from the source character set to the | |
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486 UTF-8 execution character set. */ |
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487 struct cset_converter utf8_cset_desc; |
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488 |
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489 /* Descriptor for converting from the source character set to the |
0 | 490 UTF-16 execution character set. */ |
491 struct cset_converter char16_cset_desc; | |
492 | |
493 /* Descriptor for converting from the source character set to the | |
494 UTF-32 execution character set. */ | |
495 struct cset_converter char32_cset_desc; | |
496 | |
497 /* Descriptor for converting from the source character set to the | |
498 wide execution character set. */ | |
499 struct cset_converter wide_cset_desc; | |
500 | |
501 /* Date and time text. Calculated together if either is requested. */ | |
502 const unsigned char *date; | |
503 const unsigned char *time; | |
504 | |
111 | 505 /* Externally set timestamp to replace current date and time useful for |
506 reproducibility. It should be initialized to -2 (not yet set) and | |
507 set to -1 to disable it or to a non-negative value to enable it. */ | |
508 time_t source_date_epoch; | |
509 | |
0 | 510 /* EOF token, and a token forcing paste avoidance. */ |
511 cpp_token avoid_paste; | |
512 cpp_token eof; | |
513 | |
514 /* Opaque handle to the dependencies of mkdeps.c. */ | |
515 struct deps *deps; | |
516 | |
517 /* Obstack holding all macro hash nodes. This never shrinks. | |
518 See identifiers.c */ | |
519 struct obstack hash_ob; | |
520 | |
521 /* Obstack holding buffer and conditional structures. This is a | |
522 real stack. See directives.c. */ | |
523 struct obstack buffer_ob; | |
524 | |
525 /* Pragma table - dynamic, because a library user can add to the | |
526 list of recognized pragmas. */ | |
527 struct pragma_entry *pragmas; | |
528 | |
529 /* Call backs to cpplib client. */ | |
530 struct cpp_callbacks cb; | |
531 | |
532 /* Identifier hash table. */ | |
533 struct ht *hash_table; | |
534 | |
535 /* Expression parser stack. */ | |
536 struct op *op_stack, *op_limit; | |
537 | |
538 /* User visible options. */ | |
539 struct cpp_options opts; | |
540 | |
541 /* Special nodes - identifiers with predefined significance to the | |
542 preprocessor. */ | |
543 struct spec_nodes spec_nodes; | |
544 | |
545 /* Whether cpplib owns the hashtable. */ | |
546 bool our_hashtable; | |
547 | |
548 /* Traditional preprocessing output buffer (a logical line). */ | |
549 struct | |
550 { | |
551 unsigned char *base; | |
552 unsigned char *limit; | |
553 unsigned char *cur; | |
554 source_location first_line; | |
555 } out; | |
556 | |
557 /* Used for buffer overlays by traditional.c. */ | |
558 const unsigned char *saved_cur, *saved_rlimit, *saved_line_base; | |
559 | |
560 /* A saved list of the defined macros, for dependency checking | |
561 of precompiled headers. */ | |
562 struct cpp_savedstate *savedstate; | |
563 | |
564 /* Next value of __COUNTER__ macro. */ | |
565 unsigned int counter; | |
566 | |
567 /* Table of comments, when state.save_comments is true. */ | |
568 cpp_comment_table comments; | |
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569 |
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570 /* List of saved macros by push_macro. */ |
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571 struct def_pragma_macro *pushed_macros; |
111 | 572 |
573 /* If non-null, the lexer will use this location for the next token | |
574 instead of getting a location from the linemap. */ | |
575 source_location *forced_token_location_p; | |
0 | 576 }; |
577 | |
578 /* Character classes. Based on the more primitive macros in safe-ctype.h. | |
579 If the definition of `numchar' looks odd to you, please look up the | |
580 definition of a pp-number in the C standard [section 6.4.8 of C99]. | |
581 | |
582 In the unlikely event that characters other than \r and \n enter | |
583 the set is_vspace, the macro handle_newline() in lex.c must be | |
584 updated. */ | |
585 #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident)) | |
586 | |
587 #define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x)) | |
588 #define is_numchar(x) ISIDNUM(x) | |
589 #define is_idstart(x) (ISIDST(x) || _dollar_ok(x)) | |
590 #define is_numstart(x) ISDIGIT(x) | |
591 #define is_hspace(x) ISBLANK(x) | |
592 #define is_vspace(x) IS_VSPACE(x) | |
593 #define is_nvspace(x) IS_NVSPACE(x) | |
594 #define is_space(x) IS_SPACE_OR_NUL(x) | |
595 | |
596 /* This table is constant if it can be initialized at compile time, | |
597 which is the case if cpp was compiled with GCC >=2.7, or another | |
598 compiler that supports C99. */ | |
599 #if HAVE_DESIGNATED_INITIALIZERS | |
600 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; | |
601 #else | |
602 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; | |
603 #endif | |
604 | |
131 | 605 #if !defined (HAVE_UCHAR) && !defined (IN_GCC) |
606 typedef unsigned char uchar; | |
607 #endif | |
608 | |
609 #define UC (const uchar *) /* Intended use: UC"string" */ | |
610 | |
0 | 611 /* Macros. */ |
612 | |
613 static inline int cpp_in_system_header (cpp_reader *); | |
614 static inline int | |
615 cpp_in_system_header (cpp_reader *pfile) | |
616 { | |
617 return pfile->buffer ? pfile->buffer->sysp : 0; | |
618 } | |
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619 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, cpp_pedantic) |
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620 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, cpp_warn_traditional) |
0 | 621 |
622 static inline int cpp_in_primary_file (cpp_reader *); | |
623 static inline int | |
624 cpp_in_primary_file (cpp_reader *pfile) | |
625 { | |
626 return pfile->line_table->depth == 1; | |
627 } | |
628 | |
629 /* In macro.c */ | |
131 | 630 extern void _cpp_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node); |
631 inline void _cpp_maybe_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node) | |
632 { | |
633 if (!(node->flags & NODE_USED)) | |
634 _cpp_notify_macro_use (pfile, node); | |
635 } | |
636 extern cpp_macro *_cpp_new_macro (cpp_reader *, cpp_macro_kind, void *); | |
0 | 637 extern void _cpp_free_definition (cpp_hashnode *); |
638 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *); | |
639 extern void _cpp_pop_context (cpp_reader *); | |
640 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *, | |
641 const unsigned char *, size_t); | |
131 | 642 extern bool _cpp_save_parameter (cpp_reader *, unsigned, cpp_hashnode *, |
111 | 643 cpp_hashnode *); |
131 | 644 extern void _cpp_unsave_parameters (cpp_reader *, unsigned); |
0 | 645 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *, |
646 unsigned int); | |
647 extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *, | |
111 | 648 cpp_hashnode *, |
649 source_location = 0); | |
0 | 650 extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *); |
651 extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *, | |
652 const cpp_token *, unsigned int); | |
653 extern void _cpp_backup_tokens_direct (cpp_reader *, unsigned int); | |
654 | |
655 /* In identifiers.c */ | |
111 | 656 extern void _cpp_init_hashtable (cpp_reader *, cpp_hash_table *); |
0 | 657 extern void _cpp_destroy_hashtable (cpp_reader *); |
658 | |
659 /* In files.c */ | |
660 typedef struct _cpp_file _cpp_file; | |
661 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *, | |
111 | 662 bool, int, bool, source_location); |
0 | 663 extern bool _cpp_find_failed (_cpp_file *); |
664 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *); | |
665 extern void _cpp_fake_include (cpp_reader *, const char *); | |
111 | 666 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool, |
667 source_location); | |
0 | 668 extern bool _cpp_stack_include (cpp_reader *, const char *, int, |
111 | 669 enum include_type, source_location); |
0 | 670 extern int _cpp_compare_file_date (cpp_reader *, const char *, int); |
671 extern void _cpp_report_missing_guards (cpp_reader *); | |
672 extern void _cpp_init_files (cpp_reader *); | |
673 extern void _cpp_cleanup_files (cpp_reader *); | |
111 | 674 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *, |
675 const unsigned char *); | |
0 | 676 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f); |
677 extern bool _cpp_read_file_entries (cpp_reader *, FILE *); | |
111 | 678 extern const char *_cpp_get_file_name (_cpp_file *); |
0 | 679 extern struct stat *_cpp_get_file_stat (_cpp_file *); |
111 | 680 extern bool _cpp_has_header (cpp_reader *, const char *, int, |
681 enum include_type); | |
0 | 682 |
683 /* In expr.c */ | |
684 extern bool _cpp_parse_expr (cpp_reader *, bool); | |
685 extern struct op *_cpp_expand_op_stack (cpp_reader *); | |
686 | |
687 /* In lex.c */ | |
688 extern void _cpp_process_line_notes (cpp_reader *, int); | |
689 extern void _cpp_clean_line (cpp_reader *); | |
690 extern bool _cpp_get_fresh_line (cpp_reader *); | |
691 extern bool _cpp_skip_block_comment (cpp_reader *); | |
692 extern cpp_token *_cpp_temp_token (cpp_reader *); | |
693 extern const cpp_token *_cpp_lex_token (cpp_reader *); | |
694 extern cpp_token *_cpp_lex_direct (cpp_reader *); | |
111 | 695 extern unsigned char *_cpp_spell_ident_ucns (unsigned char *, cpp_hashnode *); |
0 | 696 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *); |
697 extern void _cpp_init_tokenrun (tokenrun *, unsigned int); | |
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698 extern cpp_hashnode *_cpp_lex_identifier (cpp_reader *, const char *); |
111 | 699 extern int _cpp_remaining_tokens_num_in_context (cpp_context *); |
700 extern void _cpp_init_lexer (void); | |
131 | 701 static inline void *_cpp_reserve_room (cpp_reader *pfile, size_t have, |
702 size_t extra) | |
703 { | |
704 if (BUFF_ROOM (pfile->a_buff) < (have + extra)) | |
705 _cpp_extend_buff (pfile, &pfile->a_buff, extra); | |
706 return BUFF_FRONT (pfile->a_buff); | |
707 } | |
708 extern void *_cpp_commit_buff (cpp_reader *pfile, size_t size); | |
0 | 709 |
710 /* In init.c. */ | |
711 extern void _cpp_maybe_push_include_file (cpp_reader *); | |
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712 extern const char *cpp_named_operator2name (enum cpp_ttype type); |
0 | 713 |
714 /* In directives.c */ | |
715 extern int _cpp_test_assertion (cpp_reader *, unsigned int *); | |
716 extern int _cpp_handle_directive (cpp_reader *, int); | |
717 extern void _cpp_define_builtin (cpp_reader *, const char *); | |
718 extern char ** _cpp_save_pragma_names (cpp_reader *); | |
719 extern void _cpp_restore_pragma_names (cpp_reader *, char **); | |
111 | 720 extern int _cpp_do__Pragma (cpp_reader *, source_location); |
0 | 721 extern void _cpp_init_directives (cpp_reader *); |
722 extern void _cpp_init_internal_pragmas (cpp_reader *); | |
723 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *, | |
724 linenum_type, unsigned int); | |
725 extern void _cpp_pop_buffer (cpp_reader *); | |
111 | 726 extern char *_cpp_bracket_include (cpp_reader *); |
0 | 727 |
728 /* In directives.c */ | |
729 struct _cpp_dir_only_callbacks | |
730 { | |
731 /* Called to print a block of lines. */ | |
732 void (*print_lines) (int, const void *, size_t); | |
131 | 733 bool (*maybe_print_line) (source_location); |
0 | 734 }; |
735 | |
736 extern void _cpp_preprocess_dir_only (cpp_reader *, | |
737 const struct _cpp_dir_only_callbacks *); | |
738 | |
739 /* In traditional.c. */ | |
111 | 740 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *, bool); |
0 | 741 extern bool _cpp_read_logical_line_trad (cpp_reader *); |
742 extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *, | |
743 size_t); | |
744 extern void _cpp_remove_overlay (cpp_reader *); | |
131 | 745 extern cpp_macro *_cpp_create_trad_definition (cpp_reader *); |
0 | 746 extern bool _cpp_expansions_different_trad (const cpp_macro *, |
747 const cpp_macro *); | |
748 extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *, | |
749 unsigned char *); | |
750 extern size_t _cpp_replacement_text_len (const cpp_macro *); | |
751 | |
752 /* In charset.c. */ | |
753 | |
754 /* The normalization state at this point in the sequence. | |
755 It starts initialized to all zeros, and at the end | |
756 'level' is the normalization level of the sequence. */ | |
757 | |
758 struct normalize_state | |
759 { | |
111 | 760 /* The previous starter character. */ |
0 | 761 cppchar_t previous; |
111 | 762 /* The combining class of the previous character (whether or not a |
763 starter). */ | |
0 | 764 unsigned char prev_class; |
765 /* The lowest normalization level so far. */ | |
766 enum cpp_normalize_level level; | |
767 }; | |
768 #define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC } | |
769 #define NORMALIZE_STATE_RESULT(st) ((st)->level) | |
770 | |
111 | 771 /* We saw a character C that matches ISIDNUM(), update a |
0 | 772 normalize_state appropriately. */ |
111 | 773 #define NORMALIZE_STATE_UPDATE_IDNUM(st, c) \ |
774 ((st)->previous = (c), (st)->prev_class = 0) | |
0 | 775 |
111 | 776 extern bool _cpp_valid_ucn (cpp_reader *, const unsigned char **, |
777 const unsigned char *, int, | |
778 struct normalize_state *state, | |
779 cppchar_t *, | |
780 source_range *char_range, | |
781 cpp_string_location_reader *loc_reader); | |
0 | 782 extern void _cpp_destroy_iconv (cpp_reader *); |
783 extern unsigned char *_cpp_convert_input (cpp_reader *, const char *, | |
784 unsigned char *, size_t, size_t, | |
785 const unsigned char **, off_t *); | |
786 extern const char *_cpp_default_encoding (void); | |
787 extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile, | |
788 const unsigned char *id, | |
789 size_t len); | |
790 | |
791 /* Utility routines and macros. */ | |
792 #define DSC(str) (const unsigned char *)str, sizeof str - 1 | |
793 | |
794 /* These are inline functions instead of macros so we can get type | |
795 checking. */ | |
796 static inline int ustrcmp (const unsigned char *, const unsigned char *); | |
797 static inline int ustrncmp (const unsigned char *, const unsigned char *, | |
798 size_t); | |
799 static inline size_t ustrlen (const unsigned char *); | |
111 | 800 static inline const unsigned char *uxstrdup (const unsigned char *); |
801 static inline const unsigned char *ustrchr (const unsigned char *, int); | |
0 | 802 static inline int ufputs (const unsigned char *, FILE *); |
803 | |
804 /* Use a const char for the second parameter since it is usually a literal. */ | |
805 static inline int ustrcspn (const unsigned char *, const char *); | |
806 | |
807 static inline int | |
808 ustrcmp (const unsigned char *s1, const unsigned char *s2) | |
809 { | |
810 return strcmp ((const char *)s1, (const char *)s2); | |
811 } | |
812 | |
813 static inline int | |
814 ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n) | |
815 { | |
816 return strncmp ((const char *)s1, (const char *)s2, n); | |
817 } | |
818 | |
819 static inline int | |
820 ustrcspn (const unsigned char *s1, const char *s2) | |
821 { | |
822 return strcspn ((const char *)s1, s2); | |
823 } | |
824 | |
825 static inline size_t | |
826 ustrlen (const unsigned char *s1) | |
827 { | |
828 return strlen ((const char *)s1); | |
829 } | |
830 | |
111 | 831 static inline const unsigned char * |
0 | 832 uxstrdup (const unsigned char *s1) |
833 { | |
111 | 834 return (const unsigned char *) xstrdup ((const char *)s1); |
0 | 835 } |
836 | |
111 | 837 static inline const unsigned char * |
0 | 838 ustrchr (const unsigned char *s1, int c) |
839 { | |
111 | 840 return (const unsigned char *) strchr ((const char *)s1, c); |
0 | 841 } |
842 | |
843 static inline int | |
844 ufputs (const unsigned char *s, FILE *f) | |
845 { | |
846 return fputs ((const char *)s, f); | |
847 } | |
848 | |
111 | 849 /* In line-map.c. */ |
850 | |
851 /* Create a macro map. A macro map encodes source locations of tokens | |
852 that are part of a macro replacement-list, at a macro expansion | |
853 point. See the extensive comments of struct line_map and struct | |
854 line_map_macro, in line-map.h. | |
855 | |
856 This map shall be created when the macro is expanded. The map | |
857 encodes the source location of the expansion point of the macro as | |
858 well as the "original" source location of each token that is part | |
859 of the macro replacement-list. If a macro is defined but never | |
860 expanded, it has no macro map. SET is the set of maps the macro | |
861 map should be part of. MACRO_NODE is the macro which the new macro | |
862 map should encode source locations for. EXPANSION is the location | |
863 of the expansion point of MACRO. For function-like macros | |
864 invocations, it's best to make it point to the closing parenthesis | |
865 of the macro, rather than the the location of the first character | |
866 of the macro. NUM_TOKENS is the number of tokens that are part of | |
867 the replacement-list of MACRO. */ | |
868 const line_map_macro *linemap_enter_macro (struct line_maps *, | |
869 struct cpp_hashnode*, | |
870 source_location, | |
871 unsigned int); | |
872 | |
873 /* Create and return a virtual location for a token that is part of a | |
874 macro expansion-list at a macro expansion point. See the comment | |
875 inside struct line_map_macro to see what an expansion-list exactly | |
876 is. | |
877 | |
878 A call to this function must come after a call to | |
879 linemap_enter_macro. | |
880 | |
881 MAP is the map into which the source location is created. TOKEN_NO | |
882 is the index of the token in the macro replacement-list, starting | |
883 at number 0. | |
884 | |
885 ORIG_LOC is the location of the token outside of this macro | |
886 expansion. If the token comes originally from the macro | |
887 definition, it is the locus in the macro definition; otherwise it | |
888 is a location in the context of the caller of this macro expansion | |
889 (which is a virtual location or a source location if the caller is | |
890 itself a macro expansion or not). | |
891 | |
892 MACRO_DEFINITION_LOC is the location in the macro definition, | |
893 either of the token itself or of a macro parameter that it | |
894 replaces. */ | |
895 source_location linemap_add_macro_token (const line_map_macro *, | |
896 unsigned int, | |
897 source_location, | |
898 source_location); | |
899 | |
900 /* Return the source line number corresponding to source location | |
901 LOCATION. SET is the line map set LOCATION comes from. If | |
902 LOCATION is the location of token that is part of the | |
903 expansion-list of a macro expansion return the line number of the | |
904 macro expansion point. */ | |
905 int linemap_get_expansion_line (struct line_maps *, | |
906 source_location); | |
907 | |
908 /* Return the path of the file corresponding to source code location | |
909 LOCATION. | |
910 | |
911 If LOCATION is the location of a token that is part of the | |
912 replacement-list of a macro expansion return the file path of the | |
913 macro expansion point. | |
914 | |
915 SET is the line map set LOCATION comes from. */ | |
916 const char* linemap_get_expansion_filename (struct line_maps *, | |
917 source_location); | |
918 | |
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919 #ifdef __cplusplus |
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920 } |
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921 #endif |
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922 |
0 | 923 #endif /* ! LIBCPP_INTERNAL_H */ |