Mercurial > hg > CbC > CbC_gcc
annotate libcpp/init.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | f6334be47118 |
children | 84e7813d76e9 |
rev | line source |
---|---|
0 | 1 /* CPP Library. |
111 | 2 Copyright (C) 1986-2017 Free Software Foundation, Inc. |
0 | 3 Contributed by Per Bothner, 1994-95. |
4 Based on CCCP program by Paul Rubin, June 1986 | |
5 Adapted to ANSI C, Richard Stallman, Jan 1987 | |
6 | |
7 This program is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
9 Free Software Foundation; either version 3, or (at your option) any | |
10 later version. | |
11 | |
12 This program is distributed in the hope that it will be useful, | |
13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 GNU General Public License for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with this program; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #include "config.h" | |
22 #include "system.h" | |
23 #include "cpplib.h" | |
24 #include "internal.h" | |
25 #include "mkdeps.h" | |
26 #include "localedir.h" | |
111 | 27 #include "filenames.h" |
28 | |
29 #ifndef ENABLE_CANONICAL_SYSTEM_HEADERS | |
30 #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
31 #define ENABLE_CANONICAL_SYSTEM_HEADERS 1 | |
32 #else | |
33 #define ENABLE_CANONICAL_SYSTEM_HEADERS 0 | |
34 #endif | |
35 #endif | |
0 | 36 |
37 static void init_library (void); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
38 static void mark_named_operators (cpp_reader *, int); |
0 | 39 static void read_original_filename (cpp_reader *); |
40 static void read_original_directory (cpp_reader *); | |
41 static void post_options (cpp_reader *); | |
42 | |
43 /* If we have designated initializers (GCC >2.7) these tables can be | |
44 initialized, constant data. Otherwise, they have to be filled in at | |
45 runtime. */ | |
46 #if HAVE_DESIGNATED_INITIALIZERS | |
47 | |
48 #define init_trigraph_map() /* Nothing. */ | |
49 #define TRIGRAPH_MAP \ | |
50 __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { | |
51 | |
52 #define END }; | |
53 #define s(p, v) [p] = v, | |
54 | |
55 #else | |
56 | |
57 #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ | |
58 static void init_trigraph_map (void) { \ | |
59 unsigned char *x = _cpp_trigraph_map; | |
60 | |
61 #define END } | |
62 #define s(p, v) x[p] = v; | |
63 | |
64 #endif | |
65 | |
66 TRIGRAPH_MAP | |
67 s('=', '#') s(')', ']') s('!', '|') | |
68 s('(', '[') s('\'', '^') s('>', '}') | |
69 s('/', '\\') s('<', '{') s('-', '~') | |
70 END | |
71 | |
72 #undef s | |
73 #undef END | |
74 #undef TRIGRAPH_MAP | |
75 | |
76 /* A set of booleans indicating what CPP features each source language | |
77 requires. */ | |
78 struct lang_flags | |
79 { | |
80 char c99; | |
81 char cplusplus; | |
82 char extended_numbers; | |
83 char extended_identifiers; | |
111 | 84 char c11_identifiers; |
0 | 85 char std; |
86 char digraphs; | |
87 char uliterals; | |
111 | 88 char rliterals; |
89 char user_literals; | |
90 char binary_constants; | |
91 char digit_separators; | |
92 char trigraphs; | |
93 char utf8_char_literals; | |
0 | 94 }; |
95 | |
96 static const struct lang_flags lang_defaults[] = | |
111 | 97 { /* c99 c++ xnum xid c11 std digr ulit rlit udlit bincst digsep trig u8chlit */ |
98 /* GNUC89 */ { 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, | |
99 /* GNUC99 */ { 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0 }, | |
100 /* GNUC11 */ { 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0 }, | |
101 /* STDC89 */ { 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0 }, | |
102 /* STDC94 */ { 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0 }, | |
103 /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0 }, | |
104 /* STDC11 */ { 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0 }, | |
105 /* GNUCXX */ { 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, | |
106 /* CXX98 */ { 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0 }, | |
107 /* GNUCXX11 */ { 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0 }, | |
108 /* CXX11 */ { 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0 }, | |
109 /* GNUCXX14 */ { 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0 }, | |
110 /* CXX14 */ { 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 }, | |
111 /* GNUCXX17 */ { 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1 }, | |
112 /* CXX17 */ { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1 }, | |
113 /* GNUCXX2A */ { 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1 }, | |
114 /* CXX2A */ { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1 }, | |
115 /* ASM */ { 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } | |
0 | 116 }; |
117 | |
118 /* Sets internal flags correctly for a given language. */ | |
119 void | |
120 cpp_set_lang (cpp_reader *pfile, enum c_lang lang) | |
121 { | |
122 const struct lang_flags *l = &lang_defaults[(int) lang]; | |
123 | |
124 CPP_OPTION (pfile, lang) = lang; | |
125 | |
126 CPP_OPTION (pfile, c99) = l->c99; | |
127 CPP_OPTION (pfile, cplusplus) = l->cplusplus; | |
128 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
129 CPP_OPTION (pfile, extended_identifiers) = l->extended_identifiers; | |
111 | 130 CPP_OPTION (pfile, c11_identifiers) = l->c11_identifiers; |
0 | 131 CPP_OPTION (pfile, std) = l->std; |
132 CPP_OPTION (pfile, digraphs) = l->digraphs; | |
133 CPP_OPTION (pfile, uliterals) = l->uliterals; | |
111 | 134 CPP_OPTION (pfile, rliterals) = l->rliterals; |
135 CPP_OPTION (pfile, user_literals) = l->user_literals; | |
136 CPP_OPTION (pfile, binary_constants) = l->binary_constants; | |
137 CPP_OPTION (pfile, digit_separators) = l->digit_separators; | |
138 CPP_OPTION (pfile, trigraphs) = l->trigraphs; | |
139 CPP_OPTION (pfile, utf8_char_literals) = l->utf8_char_literals; | |
0 | 140 } |
141 | |
142 /* Initialize library global state. */ | |
143 static void | |
144 init_library (void) | |
145 { | |
146 static int initialized = 0; | |
147 | |
148 if (! initialized) | |
149 { | |
150 initialized = 1; | |
151 | |
111 | 152 _cpp_init_lexer (); |
153 | |
0 | 154 /* Set up the trigraph map. This doesn't need to do anything if |
155 we were compiled with a compiler that supports C99 designated | |
156 initializers. */ | |
157 init_trigraph_map (); | |
158 | |
159 #ifdef ENABLE_NLS | |
160 (void) bindtextdomain (PACKAGE, LOCALEDIR); | |
161 #endif | |
162 } | |
163 } | |
164 | |
165 /* Initialize a cpp_reader structure. */ | |
166 cpp_reader * | |
111 | 167 cpp_create_reader (enum c_lang lang, cpp_hash_table *table, |
0 | 168 struct line_maps *line_table) |
169 { | |
170 cpp_reader *pfile; | |
171 | |
172 /* Initialize this instance of the library if it hasn't been already. */ | |
173 init_library (); | |
174 | |
175 pfile = XCNEW (cpp_reader); | |
111 | 176 memset (&pfile->base_context, 0, sizeof (pfile->base_context)); |
0 | 177 |
178 cpp_set_lang (pfile, lang); | |
179 CPP_OPTION (pfile, warn_multichar) = 1; | |
180 CPP_OPTION (pfile, discard_comments) = 1; | |
181 CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; | |
182 CPP_OPTION (pfile, tabstop) = 8; | |
183 CPP_OPTION (pfile, operator_names) = 1; | |
184 CPP_OPTION (pfile, warn_trigraphs) = 2; | |
185 CPP_OPTION (pfile, warn_endif_labels) = 1; | |
111 | 186 CPP_OPTION (pfile, cpp_warn_c90_c99_compat) = -1; |
187 CPP_OPTION (pfile, cpp_warn_cxx11_compat) = 0; | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
188 CPP_OPTION (pfile, cpp_warn_deprecated) = 1; |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
189 CPP_OPTION (pfile, cpp_warn_long_long) = 0; |
0 | 190 CPP_OPTION (pfile, dollars_in_ident) = 1; |
191 CPP_OPTION (pfile, warn_dollars) = 1; | |
192 CPP_OPTION (pfile, warn_variadic_macros) = 1; | |
193 CPP_OPTION (pfile, warn_builtin_macro_redefined) = 1; | |
111 | 194 CPP_OPTION (pfile, cpp_warn_implicit_fallthrough) = 0; |
195 /* By default, track locations of tokens resulting from macro | |
196 expansion. The '2' means, track the locations with the highest | |
197 accuracy. Read the comments for struct | |
198 cpp_options::track_macro_expansion to learn about the other | |
199 values. */ | |
200 CPP_OPTION (pfile, track_macro_expansion) = 2; | |
0 | 201 CPP_OPTION (pfile, warn_normalize) = normalized_C; |
111 | 202 CPP_OPTION (pfile, warn_literal_suffix) = 1; |
203 CPP_OPTION (pfile, canonical_system_headers) | |
204 = ENABLE_CANONICAL_SYSTEM_HEADERS; | |
205 CPP_OPTION (pfile, ext_numeric_literals) = 1; | |
206 CPP_OPTION (pfile, warn_date_time) = 0; | |
0 | 207 |
208 /* Default CPP arithmetic to something sensible for the host for the | |
209 benefit of dumb users like fix-header. */ | |
210 CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long); | |
211 CPP_OPTION (pfile, char_precision) = CHAR_BIT; | |
212 CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int); | |
213 CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int); | |
214 CPP_OPTION (pfile, unsigned_char) = 0; | |
215 CPP_OPTION (pfile, unsigned_wchar) = 1; | |
216 CPP_OPTION (pfile, bytes_big_endian) = 1; /* does not matter */ | |
217 | |
218 /* Default to no charset conversion. */ | |
219 CPP_OPTION (pfile, narrow_charset) = _cpp_default_encoding (); | |
220 CPP_OPTION (pfile, wide_charset) = 0; | |
221 | |
222 /* Default the input character set to UTF-8. */ | |
223 CPP_OPTION (pfile, input_charset) = _cpp_default_encoding (); | |
224 | |
225 /* A fake empty "directory" used as the starting point for files | |
226 looked up without a search path. Name cannot be '/' because we | |
227 don't want to prepend anything at all to filenames using it. All | |
228 other entries are correct zero-initialized. */ | |
229 pfile->no_search_path.name = (char *) ""; | |
230 | |
231 /* Initialize the line map. */ | |
232 pfile->line_table = line_table; | |
233 | |
234 /* Initialize lexer state. */ | |
235 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); | |
236 | |
237 /* Set up static tokens. */ | |
238 pfile->avoid_paste.type = CPP_PADDING; | |
239 pfile->avoid_paste.val.source = NULL; | |
240 pfile->eof.type = CPP_EOF; | |
241 pfile->eof.flags = 0; | |
242 | |
243 /* Create a token buffer for the lexer. */ | |
244 _cpp_init_tokenrun (&pfile->base_run, 250); | |
245 pfile->cur_run = &pfile->base_run; | |
246 pfile->cur_token = pfile->base_run.base; | |
247 | |
248 /* Initialize the base context. */ | |
249 pfile->context = &pfile->base_context; | |
111 | 250 pfile->base_context.c.macro = 0; |
0 | 251 pfile->base_context.prev = pfile->base_context.next = 0; |
252 | |
253 /* Aligned and unaligned storage. */ | |
254 pfile->a_buff = _cpp_get_buff (pfile, 0); | |
255 pfile->u_buff = _cpp_get_buff (pfile, 0); | |
256 | |
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
257 /* Initialize table for push_macro/pop_macro. */ |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
258 pfile->pushed_macros = 0; |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
259 |
111 | 260 /* Do not force token locations by default. */ |
261 pfile->forced_token_location_p = NULL; | |
262 | |
263 /* Initialize source_date_epoch to -2 (not yet set). */ | |
264 pfile->source_date_epoch = (time_t) -2; | |
265 | |
0 | 266 /* The expression parser stack. */ |
267 _cpp_expand_op_stack (pfile); | |
268 | |
269 /* Initialize the buffer obstack. */ | |
111 | 270 obstack_specify_allocation (&pfile->buffer_ob, 0, 0, xmalloc, free); |
0 | 271 |
272 _cpp_init_files (pfile); | |
273 | |
274 _cpp_init_hashtable (pfile, table); | |
275 | |
276 return pfile; | |
277 } | |
278 | |
279 /* Set the line_table entry in PFILE. This is called after reading a | |
280 PCH file, as the old line_table will be incorrect. */ | |
281 void | |
282 cpp_set_line_map (cpp_reader *pfile, struct line_maps *line_table) | |
283 { | |
284 pfile->line_table = line_table; | |
285 } | |
286 | |
287 /* Free resources used by PFILE. Accessing PFILE after this function | |
288 returns leads to undefined behavior. Returns the error count. */ | |
289 void | |
290 cpp_destroy (cpp_reader *pfile) | |
291 { | |
292 cpp_context *context, *contextn; | |
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
293 struct def_pragma_macro *pmacro; |
0 | 294 tokenrun *run, *runn; |
295 int i; | |
296 | |
297 free (pfile->op_stack); | |
298 | |
299 while (CPP_BUFFER (pfile) != NULL) | |
300 _cpp_pop_buffer (pfile); | |
301 | |
111 | 302 free (pfile->out.base); |
0 | 303 |
304 if (pfile->macro_buffer) | |
305 { | |
306 free (pfile->macro_buffer); | |
307 pfile->macro_buffer = NULL; | |
308 pfile->macro_buffer_len = 0; | |
309 } | |
310 | |
311 if (pfile->deps) | |
312 deps_free (pfile->deps); | |
313 obstack_free (&pfile->buffer_ob, 0); | |
314 | |
315 _cpp_destroy_hashtable (pfile); | |
316 _cpp_cleanup_files (pfile); | |
317 _cpp_destroy_iconv (pfile); | |
318 | |
319 _cpp_free_buff (pfile->a_buff); | |
320 _cpp_free_buff (pfile->u_buff); | |
321 _cpp_free_buff (pfile->free_buffs); | |
322 | |
323 for (run = &pfile->base_run; run; run = runn) | |
324 { | |
325 runn = run->next; | |
326 free (run->base); | |
327 if (run != &pfile->base_run) | |
328 free (run); | |
329 } | |
330 | |
331 for (context = pfile->base_context.next; context; context = contextn) | |
332 { | |
333 contextn = context->next; | |
334 free (context); | |
335 } | |
336 | |
337 if (pfile->comments.entries) | |
338 { | |
339 for (i = 0; i < pfile->comments.count; i++) | |
340 free (pfile->comments.entries[i].comment); | |
341 | |
342 free (pfile->comments.entries); | |
343 } | |
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
344 if (pfile->pushed_macros) |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
345 { |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
346 do |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
347 { |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
348 pmacro = pfile->pushed_macros; |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
349 pfile->pushed_macros = pmacro->next; |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
350 free (pmacro->name); |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
351 free (pmacro); |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
352 } |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
353 while (pfile->pushed_macros); |
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
354 } |
0 | 355 |
356 free (pfile); | |
357 } | |
358 | |
359 /* This structure defines one built-in identifier. A node will be | |
360 entered in the hash table under the name NAME, with value VALUE. | |
361 | |
362 There are two tables of these. builtin_array holds all the | |
363 "builtin" macros: these are handled by builtin_macro() in | |
364 macro.c. Builtin is somewhat of a misnomer -- the property of | |
365 interest is that these macros require special code to compute their | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
366 expansions. The value is a "cpp_builtin_type" enumerator. |
0 | 367 |
368 operator_array holds the C++ named operators. These are keywords | |
369 which act as aliases for punctuators. In C++, they cannot be | |
370 altered through #define, and #if recognizes them as operators. In | |
371 C, these are not entered into the hash table at all (but see | |
372 <iso646.h>). The value is a token-type enumerator. */ | |
373 struct builtin_macro | |
374 { | |
375 const uchar *const name; | |
376 const unsigned short len; | |
377 const unsigned short value; | |
378 const bool always_warn_if_redefined; | |
379 }; | |
380 | |
381 #define B(n, t, f) { DSC(n), t, f } | |
382 static const struct builtin_macro builtin_array[] = | |
383 { | |
384 B("__TIMESTAMP__", BT_TIMESTAMP, false), | |
385 B("__TIME__", BT_TIME, false), | |
386 B("__DATE__", BT_DATE, false), | |
387 B("__FILE__", BT_FILE, false), | |
388 B("__BASE_FILE__", BT_BASE_FILE, false), | |
389 B("__LINE__", BT_SPECLINE, true), | |
390 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL, true), | |
391 B("__COUNTER__", BT_COUNTER, true), | |
111 | 392 B("__has_attribute", BT_HAS_ATTRIBUTE, true), |
393 B("__has_cpp_attribute", BT_HAS_ATTRIBUTE, true), | |
0 | 394 /* Keep builtins not used for -traditional-cpp at the end, and |
395 update init_builtins() if any more are added. */ | |
396 B("_Pragma", BT_PRAGMA, true), | |
397 B("__STDC__", BT_STDC, true), | |
398 }; | |
399 #undef B | |
400 | |
401 struct builtin_operator | |
402 { | |
403 const uchar *const name; | |
404 const unsigned short len; | |
405 const unsigned short value; | |
406 }; | |
407 | |
408 #define B(n, t) { DSC(n), t } | |
409 static const struct builtin_operator operator_array[] = | |
410 { | |
411 B("and", CPP_AND_AND), | |
412 B("and_eq", CPP_AND_EQ), | |
413 B("bitand", CPP_AND), | |
414 B("bitor", CPP_OR), | |
415 B("compl", CPP_COMPL), | |
416 B("not", CPP_NOT), | |
417 B("not_eq", CPP_NOT_EQ), | |
418 B("or", CPP_OR_OR), | |
419 B("or_eq", CPP_OR_EQ), | |
420 B("xor", CPP_XOR), | |
421 B("xor_eq", CPP_XOR_EQ) | |
422 }; | |
423 #undef B | |
424 | |
425 /* Mark the C++ named operators in the hash table. */ | |
426 static void | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
427 mark_named_operators (cpp_reader *pfile, int flags) |
0 | 428 { |
429 const struct builtin_operator *b; | |
430 | |
431 for (b = operator_array; | |
432 b < (operator_array + ARRAY_SIZE (operator_array)); | |
433 b++) | |
434 { | |
435 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
436 hp->flags |= flags; |
0 | 437 hp->is_directive = 0; |
438 hp->directive_index = b->value; | |
439 } | |
440 } | |
441 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
442 /* Helper function of cpp_type2name. Return the string associated with |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
443 named operator TYPE. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
444 const char * |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
445 cpp_named_operator2name (enum cpp_ttype type) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
446 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
447 const struct builtin_operator *b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
448 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
449 for (b = operator_array; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
450 b < (operator_array + ARRAY_SIZE (operator_array)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
451 b++) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
452 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
453 if (type == b->value) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
454 return (const char *) b->name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
455 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
456 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
457 return NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
458 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
459 |
0 | 460 void |
461 cpp_init_special_builtins (cpp_reader *pfile) | |
462 { | |
463 const struct builtin_macro *b; | |
464 size_t n = ARRAY_SIZE (builtin_array); | |
465 | |
466 if (CPP_OPTION (pfile, traditional)) | |
467 n -= 2; | |
468 else if (! CPP_OPTION (pfile, stdc_0_in_system_headers) | |
469 || CPP_OPTION (pfile, std)) | |
470 n--; | |
471 | |
472 for (b = builtin_array; b < builtin_array + n; b++) | |
473 { | |
111 | 474 if (b->value == BT_HAS_ATTRIBUTE |
475 && (CPP_OPTION (pfile, lang) == CLK_ASM | |
476 || pfile->cb.has_attribute == NULL)) | |
477 continue; | |
0 | 478 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
479 hp->type = NT_MACRO; | |
480 hp->flags |= NODE_BUILTIN; | |
111 | 481 if (b->always_warn_if_redefined) |
0 | 482 hp->flags |= NODE_WARN; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
483 hp->value.builtin = (enum cpp_builtin_type) b->value; |
0 | 484 } |
485 } | |
486 | |
487 /* Read the builtins table above and enter them, and language-specific | |
488 macros, into the hash table. HOSTED is true if this is a hosted | |
489 environment. */ | |
490 void | |
491 cpp_init_builtins (cpp_reader *pfile, int hosted) | |
492 { | |
493 cpp_init_special_builtins (pfile); | |
494 | |
495 if (!CPP_OPTION (pfile, traditional) | |
496 && (! CPP_OPTION (pfile, stdc_0_in_system_headers) | |
497 || CPP_OPTION (pfile, std))) | |
498 _cpp_define_builtin (pfile, "__STDC__ 1"); | |
499 | |
500 if (CPP_OPTION (pfile, cplusplus)) | |
111 | 501 { |
502 if (CPP_OPTION (pfile, lang) == CLK_CXX2A | |
503 || CPP_OPTION (pfile, lang) == CLK_GNUCXX2A) | |
504 _cpp_define_builtin (pfile, "__cplusplus 201709L"); | |
505 else if (CPP_OPTION (pfile, lang) == CLK_CXX17 | |
506 || CPP_OPTION (pfile, lang) == CLK_GNUCXX17) | |
507 _cpp_define_builtin (pfile, "__cplusplus 201703L"); | |
508 else if (CPP_OPTION (pfile, lang) == CLK_CXX14 | |
509 || CPP_OPTION (pfile, lang) == CLK_GNUCXX14) | |
510 _cpp_define_builtin (pfile, "__cplusplus 201402L"); | |
511 else if (CPP_OPTION (pfile, lang) == CLK_CXX11 | |
512 || CPP_OPTION (pfile, lang) == CLK_GNUCXX11) | |
513 _cpp_define_builtin (pfile, "__cplusplus 201103L"); | |
514 else | |
515 _cpp_define_builtin (pfile, "__cplusplus 199711L"); | |
516 } | |
0 | 517 else if (CPP_OPTION (pfile, lang) == CLK_ASM) |
518 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
519 else if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
520 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
111 | 521 else if (CPP_OPTION (pfile, lang) == CLK_STDC11 |
522 || CPP_OPTION (pfile, lang) == CLK_GNUC11) | |
523 _cpp_define_builtin (pfile, "__STDC_VERSION__ 201112L"); | |
0 | 524 else if (CPP_OPTION (pfile, c99)) |
525 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
526 | |
111 | 527 if (CPP_OPTION (pfile, uliterals) |
528 && !(CPP_OPTION (pfile, cplusplus) | |
529 && (CPP_OPTION (pfile, lang) == CLK_GNUCXX | |
530 || CPP_OPTION (pfile, lang) == CLK_CXX98))) | |
531 { | |
532 _cpp_define_builtin (pfile, "__STDC_UTF_16__ 1"); | |
533 _cpp_define_builtin (pfile, "__STDC_UTF_32__ 1"); | |
534 } | |
535 | |
0 | 536 if (hosted) |
537 _cpp_define_builtin (pfile, "__STDC_HOSTED__ 1"); | |
538 else | |
539 _cpp_define_builtin (pfile, "__STDC_HOSTED__ 0"); | |
540 | |
541 if (CPP_OPTION (pfile, objc)) | |
542 _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
543 } | |
544 | |
545 /* Sanity-checks are dependent on command-line options, so it is | |
111 | 546 called as a subroutine of cpp_read_main_file. */ |
547 #if CHECKING_P | |
0 | 548 static void sanity_checks (cpp_reader *); |
549 static void sanity_checks (cpp_reader *pfile) | |
550 { | |
551 cppchar_t test = 0; | |
552 size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part); | |
553 | |
554 /* Sanity checks for assumptions about CPP arithmetic and target | |
555 type precisions made by cpplib. */ | |
556 test--; | |
557 if (test < 1) | |
558 cpp_error (pfile, CPP_DL_ICE, "cppchar_t must be an unsigned type"); | |
559 | |
560 if (CPP_OPTION (pfile, precision) > max_precision) | |
561 cpp_error (pfile, CPP_DL_ICE, | |
562 "preprocessor arithmetic has maximum precision of %lu bits;" | |
563 " target requires %lu bits", | |
564 (unsigned long) max_precision, | |
565 (unsigned long) CPP_OPTION (pfile, precision)); | |
566 | |
567 if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision)) | |
568 cpp_error (pfile, CPP_DL_ICE, | |
569 "CPP arithmetic must be at least as precise as a target int"); | |
570 | |
571 if (CPP_OPTION (pfile, char_precision) < 8) | |
572 cpp_error (pfile, CPP_DL_ICE, "target char is less than 8 bits wide"); | |
573 | |
574 if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision)) | |
575 cpp_error (pfile, CPP_DL_ICE, | |
576 "target wchar_t is narrower than target char"); | |
577 | |
578 if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision)) | |
579 cpp_error (pfile, CPP_DL_ICE, | |
580 "target int is narrower than target char"); | |
581 | |
582 /* This is assumed in eval_token() and could be fixed if necessary. */ | |
583 if (sizeof (cppchar_t) > sizeof (cpp_num_part)) | |
584 cpp_error (pfile, CPP_DL_ICE, | |
585 "CPP half-integer narrower than CPP character"); | |
586 | |
587 if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T) | |
588 cpp_error (pfile, CPP_DL_ICE, | |
589 "CPP on this host cannot handle wide character constants over" | |
590 " %lu bits, but the target requires %lu bits", | |
591 (unsigned long) BITS_PER_CPPCHAR_T, | |
592 (unsigned long) CPP_OPTION (pfile, wchar_precision)); | |
593 } | |
594 #else | |
595 # define sanity_checks(PFILE) | |
596 #endif | |
597 | |
598 /* This is called after options have been parsed, and partially | |
599 processed. */ | |
600 void | |
601 cpp_post_options (cpp_reader *pfile) | |
602 { | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
603 int flags; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
604 |
0 | 605 sanity_checks (pfile); |
606 | |
607 post_options (pfile); | |
608 | |
609 /* Mark named operators before handling command line macros. */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
610 flags = 0; |
0 | 611 if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
612 flags |= NODE_OPERATOR; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
613 if (CPP_OPTION (pfile, warn_cxx_operator_names)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
614 flags |= NODE_DIAGNOSTIC | NODE_WARN_OPERATOR; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
615 if (flags != 0) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
616 mark_named_operators (pfile, flags); |
0 | 617 } |
618 | |
619 /* Setup for processing input from the file named FNAME, or stdin if | |
620 it is the empty string. Return the original filename | |
621 on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
622 const char * | |
623 cpp_read_main_file (cpp_reader *pfile, const char *fname) | |
624 { | |
111 | 625 const source_location loc = 0; |
626 | |
0 | 627 if (CPP_OPTION (pfile, deps.style) != DEPS_NONE) |
628 { | |
629 if (!pfile->deps) | |
630 pfile->deps = deps_init (); | |
631 | |
632 /* Set the default target (if there is none already). */ | |
633 deps_add_default_target (pfile->deps, fname); | |
634 } | |
635 | |
636 pfile->main_file | |
111 | 637 = _cpp_find_file (pfile, fname, &pfile->no_search_path, false, 0, false, |
638 loc); | |
0 | 639 if (_cpp_find_failed (pfile->main_file)) |
640 return NULL; | |
641 | |
111 | 642 _cpp_stack_file (pfile, pfile->main_file, false, loc); |
0 | 643 |
644 /* For foo.i, read the original filename foo.c now, for the benefit | |
645 of the front ends. */ | |
646 if (CPP_OPTION (pfile, preprocessed)) | |
647 { | |
648 read_original_filename (pfile); | |
111 | 649 fname = |
650 ORDINARY_MAP_FILE_NAME | |
651 ((LINEMAPS_LAST_ORDINARY_MAP (pfile->line_table))); | |
0 | 652 } |
653 return fname; | |
654 } | |
655 | |
656 /* For preprocessed files, if the first tokens are of the form # NUM. | |
657 handle the directive so we know the original file name. This will | |
658 generate file_change callbacks, which the front ends must handle | |
659 appropriately given their state of initialization. */ | |
660 static void | |
661 read_original_filename (cpp_reader *pfile) | |
662 { | |
663 const cpp_token *token, *token1; | |
664 | |
665 /* Lex ahead; if the first tokens are of the form # NUM, then | |
666 process the directive, otherwise back up. */ | |
667 token = _cpp_lex_direct (pfile); | |
668 if (token->type == CPP_HASH) | |
669 { | |
670 pfile->state.in_directive = 1; | |
671 token1 = _cpp_lex_direct (pfile); | |
672 _cpp_backup_tokens (pfile, 1); | |
673 pfile->state.in_directive = 0; | |
674 | |
675 /* If it's a #line directive, handle it. */ | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
676 if (token1->type == CPP_NUMBER |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
677 && _cpp_handle_directive (pfile, token->flags & PREV_WHITE)) |
0 | 678 { |
679 read_original_directory (pfile); | |
680 return; | |
681 } | |
682 } | |
683 | |
684 /* Backup as if nothing happened. */ | |
685 _cpp_backup_tokens (pfile, 1); | |
686 } | |
687 | |
688 /* For preprocessed files, if the tokens following the first filename | |
689 line is of the form # <line> "/path/name//", handle the | |
690 directive so we know the original current directory. */ | |
691 static void | |
692 read_original_directory (cpp_reader *pfile) | |
693 { | |
694 const cpp_token *hash, *token; | |
695 | |
696 /* Lex ahead; if the first tokens are of the form # NUM, then | |
697 process the directive, otherwise back up. */ | |
698 hash = _cpp_lex_direct (pfile); | |
699 if (hash->type != CPP_HASH) | |
700 { | |
701 _cpp_backup_tokens (pfile, 1); | |
702 return; | |
703 } | |
704 | |
705 token = _cpp_lex_direct (pfile); | |
706 | |
707 if (token->type != CPP_NUMBER) | |
708 { | |
709 _cpp_backup_tokens (pfile, 2); | |
710 return; | |
711 } | |
712 | |
713 token = _cpp_lex_direct (pfile); | |
714 | |
715 if (token->type != CPP_STRING | |
716 || ! (token->val.str.len >= 5 | |
111 | 717 && IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-2]) |
718 && IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-3]))) | |
0 | 719 { |
720 _cpp_backup_tokens (pfile, 3); | |
721 return; | |
722 } | |
723 | |
724 if (pfile->cb.dir_change) | |
725 { | |
726 char *debugdir = (char *) alloca (token->val.str.len - 3); | |
727 | |
728 memcpy (debugdir, (const char *) token->val.str.text + 1, | |
729 token->val.str.len - 4); | |
730 debugdir[token->val.str.len - 4] = '\0'; | |
731 | |
732 pfile->cb.dir_change (pfile, debugdir); | |
733 } | |
734 } | |
735 | |
736 /* This is called at the end of preprocessing. It pops the last | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
737 buffer and writes dependency output. |
0 | 738 |
739 Maybe it should also reset state, such that you could call | |
740 cpp_start_read with a new filename to restart processing. */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
741 void |
0 | 742 cpp_finish (cpp_reader *pfile, FILE *deps_stream) |
743 { | |
744 /* Warn about unused macros before popping the final buffer. */ | |
745 if (CPP_OPTION (pfile, warn_unused_macros)) | |
746 cpp_forall_identifiers (pfile, _cpp_warn_if_unused_macro, NULL); | |
747 | |
748 /* lex.c leaves the final buffer on the stack. This it so that | |
749 it returns an unending stream of CPP_EOFs to the client. If we | |
750 popped the buffer, we'd dereference a NULL buffer pointer and | |
751 segfault. It's nice to allow the client to do worry-free excess | |
752 cpp_get_token calls. */ | |
753 while (pfile->buffer) | |
754 _cpp_pop_buffer (pfile); | |
755 | |
756 if (CPP_OPTION (pfile, deps.style) != DEPS_NONE | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
757 && deps_stream) |
0 | 758 { |
759 deps_write (pfile->deps, deps_stream, 72); | |
760 | |
761 if (CPP_OPTION (pfile, deps.phony_targets)) | |
762 deps_phony_targets (pfile->deps, deps_stream); | |
763 } | |
764 | |
765 /* Report on headers that could use multiple include guards. */ | |
766 if (CPP_OPTION (pfile, print_include_names)) | |
767 _cpp_report_missing_guards (pfile); | |
768 } | |
769 | |
770 static void | |
771 post_options (cpp_reader *pfile) | |
772 { | |
773 /* -Wtraditional is not useful in C++ mode. */ | |
774 if (CPP_OPTION (pfile, cplusplus)) | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
775 CPP_OPTION (pfile, cpp_warn_traditional) = 0; |
0 | 776 |
777 /* Permanently disable macro expansion if we are rescanning | |
778 preprocessed text. Read preprocesed source in ISO mode. */ | |
779 if (CPP_OPTION (pfile, preprocessed)) | |
780 { | |
781 if (!CPP_OPTION (pfile, directives_only)) | |
782 pfile->state.prevent_expansion = 1; | |
783 CPP_OPTION (pfile, traditional) = 0; | |
784 } | |
785 | |
786 if (CPP_OPTION (pfile, warn_trigraphs) == 2) | |
787 CPP_OPTION (pfile, warn_trigraphs) = !CPP_OPTION (pfile, trigraphs); | |
788 | |
789 if (CPP_OPTION (pfile, traditional)) | |
790 { | |
791 CPP_OPTION (pfile, trigraphs) = 0; | |
792 CPP_OPTION (pfile, warn_trigraphs) = 0; | |
793 } | |
794 } |