]>
Commit | Line | Data |
---|---|---|
5538ada6 | 1 | /* CPP Library. |
5e7b4e25 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
745b26b3 | 3 | 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
5538ada6 ZW |
4 | Contributed by Per Bothner, 1994-95. |
5 | Based on CCCP program by Paul Rubin, June 1986 | |
6 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by the | |
10 | Free Software Foundation; either version 2, or (at your option) any | |
11 | later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
5538ada6 ZW |
22 | #include "config.h" |
23 | #include "system.h" | |
6de1e2a9 ZW |
24 | #include "cpplib.h" |
25 | #include "cpphash.h" | |
6de1e2a9 ZW |
26 | #include "prefix.h" |
27 | #include "intl.h" | |
49e6c08e | 28 | #include "mkdeps.h" |
60893f43 | 29 | #include "cppdefault.h" |
6de1e2a9 | 30 | |
88ae23e7 ZW |
31 | /* Windows does not natively support inodes, and neither does MSDOS. |
32 | Cygwin's emulation can generate non-unique inodes, so don't use it. | |
ec5c56db | 33 | VMS has non-numeric inodes. */ |
88ae23e7 | 34 | #ifdef VMS |
ca47c89e DR |
35 | # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
36 | # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
88ae23e7 | 37 | #else |
3943e756 | 38 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
ca47c89e | 39 | # define INO_T_EQ(A, B) 0 |
3943e756 | 40 | # else |
ca47c89e | 41 | # define INO_T_EQ(A, B) ((A) == (B)) |
3943e756 | 42 | # endif |
ca47c89e | 43 | # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
88ae23e7 ZW |
44 | #endif |
45 | ||
4a58aab6 | 46 | /* Internal structures and prototypes. */ |
6de1e2a9 | 47 | |
4a58aab6 NB |
48 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
49 | -imacros switch. */ | |
8be1ddca | 50 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
0b22d65c | 51 | struct pending_option |
6de1e2a9 | 52 | { |
0b22d65c | 53 | struct pending_option *next; |
7ceb3598 | 54 | const char *arg; |
40eac643 | 55 | cl_directive_handler handler; |
6de1e2a9 | 56 | }; |
0b22d65c | 57 | |
88ae23e7 | 58 | /* The `pending' structure accumulates all the options that are not |
f5e99456 | 59 | actually processed until we hit cpp_read_main_file. It consists of |
88ae23e7 | 60 | several lists, one for each type of option. We keep both head and |
4a58aab6 | 61 | tail pointers for quick insertion. */ |
88ae23e7 ZW |
62 | struct cpp_pending |
63 | { | |
40eac643 | 64 | struct pending_option *directive_head, *directive_tail; |
88ae23e7 | 65 | |
591e15a1 NB |
66 | struct search_path *quote_head, *quote_tail; |
67 | struct search_path *brack_head, *brack_tail; | |
68 | struct search_path *systm_head, *systm_tail; | |
69 | struct search_path *after_head, *after_tail; | |
88ae23e7 ZW |
70 | |
71 | struct pending_option *imacros_head, *imacros_tail; | |
72 | struct pending_option *include_head, *include_tail; | |
73 | }; | |
74 | ||
0b22d65c ZW |
75 | #ifdef __STDC__ |
76 | #define APPEND(pend, list, elt) \ | |
77 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
78 | else (pend)->list##_tail->next = (elt); \ | |
79 | (pend)->list##_tail = (elt); \ | |
80 | } while (0) | |
81 | #else | |
82 | #define APPEND(pend, list, elt) \ | |
83 | do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ | |
84 | else (pend)->list/**/_tail->next = (elt); \ | |
85 | (pend)->list/**/_tail = (elt); \ | |
86 | } while (0) | |
87 | #endif | |
6de1e2a9 | 88 | |
0b22d65c | 89 | static void path_include PARAMS ((cpp_reader *, |
0b22d65c | 90 | char *, int)); |
674c3b40 | 91 | static void init_library PARAMS ((void)); |
7ca3d2b1 | 92 | static void init_builtins PARAMS ((cpp_reader *)); |
17645b15 | 93 | static void mark_named_operators PARAMS ((cpp_reader *)); |
0b22d65c | 94 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 95 | char *, int, int)); |
002ee64f | 96 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
48209ce5 JDA |
97 | struct search_path *, |
98 | struct search_path **)); | |
99 | static struct search_path * remove_dup_nonsys_dirs PARAMS ((cpp_reader *, | |
100 | struct search_path **, | |
591e15a1 | 101 | struct search_path *)); |
002ee64f | 102 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
48209ce5 | 103 | struct search_path **)); |
ae79697b | 104 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
105 | static bool push_include PARAMS ((cpp_reader *, |
106 | struct pending_option *)); | |
107 | static void free_chain PARAMS ((struct pending_option *)); | |
7ca3d2b1 | 108 | static void init_standard_includes PARAMS ((cpp_reader *)); |
f5e99456 | 109 | static void read_original_filename PARAMS ((cpp_reader *)); |
2c0accc9 | 110 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
111 | const char *, |
112 | cl_directive_handler)); | |
e23c0ba3 | 113 | static int parse_option PARAMS ((const char *)); |
f4ff5a69 | 114 | static void post_options PARAMS ((cpp_reader *)); |
6de1e2a9 | 115 | |
cb773845 ZW |
116 | /* Fourth argument to append_include_chain: chain to use. |
117 | Note it's never asked to append to the quote chain. */ | |
118 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6de1e2a9 | 119 | |
61d0346d NB |
120 | /* If we have designated initializers (GCC >2.7) these tables can be |
121 | initialized, constant data. Otherwise, they have to be filled in at | |
12cf91fe | 122 | runtime. */ |
61d0346d | 123 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 124 | |
4a58aab6 | 125 | #define init_trigraph_map() /* Nothing. */ |
61d0346d | 126 | #define TRIGRAPH_MAP \ |
562a5c27 | 127 | __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { |
61d0346d | 128 | |
a9ae4483 | 129 | #define END }; |
455d2586 | 130 | #define s(p, v) [p] = v, |
61d0346d | 131 | |
a9ae4483 | 132 | #else |
61d0346d | 133 | |
562a5c27 | 134 | #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
61d0346d NB |
135 | static void init_trigraph_map PARAMS ((void)) { \ |
136 | unsigned char *x = _cpp_trigraph_map; | |
137 | ||
ae79697b | 138 | #define END } |
455d2586 | 139 | #define s(p, v) x[p] = v; |
61d0346d | 140 | |
a9ae4483 | 141 | #endif |
6de1e2a9 | 142 | |
61d0346d NB |
143 | TRIGRAPH_MAP |
144 | s('=', '#') s(')', ']') s('!', '|') | |
145 | s('(', '[') s('\'', '^') s('>', '}') | |
146 | s('/', '\\') s('<', '{') s('-', '~') | |
147 | END | |
148 | ||
a9ae4483 | 149 | #undef s |
455d2586 | 150 | #undef END |
61d0346d | 151 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
152 | |
153 | /* Given a colon-separated list of file names PATH, | |
154 | add all the names to the search path for include files. */ | |
6de1e2a9 | 155 | static void |
e33f6253 | 156 | path_include (pfile, list, path) |
6de1e2a9 | 157 | cpp_reader *pfile; |
0b22d65c ZW |
158 | char *list; |
159 | int path; | |
6de1e2a9 | 160 | { |
0b22d65c | 161 | char *p, *q, *name; |
6de1e2a9 | 162 | |
0b22d65c | 163 | p = list; |
6de1e2a9 | 164 | |
0b22d65c ZW |
165 | do |
166 | { | |
6de1e2a9 | 167 | /* Find the end of this name. */ |
0b22d65c | 168 | q = p; |
6de1e2a9 | 169 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
170 | if (q == p) |
171 | { | |
172 | /* An empty name in the path stands for the current directory. */ | |
173 | name = (char *) xmalloc (2); | |
174 | name[0] = '.'; | |
175 | name[1] = 0; | |
176 | } | |
177 | else | |
178 | { | |
179 | /* Otherwise use the directory that is named. */ | |
180 | name = (char *) xmalloc (q - p + 1); | |
181 | memcpy (name, p, q - p); | |
182 | name[q - p] = 0; | |
183 | } | |
6de1e2a9 | 184 | |
463f1b2b | 185 | append_include_chain (pfile, name, path, path == SYSTEM); |
6de1e2a9 ZW |
186 | |
187 | /* Advance past this name. */ | |
0b22d65c | 188 | if (*q == 0) |
6de1e2a9 | 189 | break; |
0b22d65c ZW |
190 | p = q + 1; |
191 | } | |
192 | while (1); | |
193 | } | |
194 | ||
bef985f3 | 195 | /* Append DIR to include path PATH. DIR must be allocated on the |
5d8ebbd8 NB |
196 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
197 | is non-zero if the header contains extern "C" guards for C++, | |
198 | otherwise it is zero. */ | |
0b22d65c | 199 | static void |
e33f6253 | 200 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 201 | cpp_reader *pfile; |
0b22d65c ZW |
202 | char *dir; |
203 | int path; | |
39e5db1a | 204 | int cxx_aware; |
0b22d65c | 205 | { |
e33f6253 | 206 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 207 | struct search_path *new; |
0b22d65c ZW |
208 | struct stat st; |
209 | unsigned int len; | |
210 | ||
f9200da2 | 211 | if (*dir == '\0') |
bef985f3 NB |
212 | { |
213 | free (dir); | |
214 | dir = xstrdup ("."); | |
215 | } | |
b0699dad | 216 | _cpp_simplify_pathname (dir); |
bef985f3 | 217 | |
0b22d65c ZW |
218 | if (stat (dir, &st)) |
219 | { | |
f9200da2 | 220 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 221 | if (errno != ENOENT) |
ebef4e8c | 222 | cpp_errno (pfile, DL_ERROR, dir); |
ae79697b | 223 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 224 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 225 | free (dir); |
0b22d65c ZW |
226 | return; |
227 | } | |
228 | ||
229 | if (!S_ISDIR (st.st_mode)) | |
230 | { | |
ebef4e8c | 231 | cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir); |
bef985f3 | 232 | free (dir); |
0b22d65c ZW |
233 | return; |
234 | } | |
235 | ||
236 | len = strlen (dir); | |
237 | if (len > pfile->max_include_len) | |
238 | pfile->max_include_len = len; | |
ae79697b | 239 | |
591e15a1 | 240 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 241 | new->name = dir; |
591e15a1 | 242 | new->len = len; |
ca47c89e | 243 | INO_T_COPY (new->ino, st.st_ino); |
0b22d65c | 244 | new->dev = st.st_dev; |
4737b274 CF |
245 | /* Both systm and after include file lists should be treated as system |
246 | include files since these two lists are really just a concatenation | |
ec5c56db | 247 | of one "system" list. */ |
4737b274 | 248 | if (path == SYSTEM || path == AFTER) |
c45da1ca ZW |
249 | new->sysp = cxx_aware ? 1 : 2; |
250 | else | |
251 | new->sysp = 0; | |
0b22d65c | 252 | new->name_map = NULL; |
503cb436 | 253 | new->next = NULL; |
0b22d65c ZW |
254 | |
255 | switch (path) | |
256 | { | |
0b22d65c ZW |
257 | case BRACKET: APPEND (pend, brack, new); break; |
258 | case SYSTEM: APPEND (pend, systm, new); break; | |
259 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
260 | } |
261 | } | |
262 | ||
dd69c71b | 263 | /* Handle a duplicated include path. PREV is the link in the chain |
48209ce5 JDA |
264 | before the duplicate, or NULL if the duplicate is at the head of |
265 | the chain. The duplicate is removed from the chain and freed. | |
266 | Returns PREV. */ | |
002ee64f | 267 | static struct search_path * |
48209ce5 | 268 | remove_dup_dir (pfile, prev, head_ptr) |
dd69c71b | 269 | cpp_reader *pfile; |
591e15a1 | 270 | struct search_path *prev; |
48209ce5 | 271 | struct search_path **head_ptr; |
dd69c71b | 272 | { |
48209ce5 JDA |
273 | struct search_path *cur; |
274 | ||
275 | if (prev != NULL) | |
276 | { | |
277 | cur = prev->next; | |
278 | prev->next = cur->next; | |
279 | } | |
280 | else | |
281 | { | |
282 | cur = *head_ptr; | |
283 | *head_ptr = cur->next; | |
284 | } | |
dd69c71b NB |
285 | |
286 | if (CPP_OPTION (pfile, verbose)) | |
287 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
288 | ||
591e15a1 | 289 | free ((PTR) cur->name); |
dd69c71b NB |
290 | free (cur); |
291 | ||
292 | return prev; | |
293 | } | |
294 | ||
48209ce5 JDA |
295 | /* Remove duplicate non-system directories for which there is an equivalent |
296 | system directory latter in the chain. The range for removal is between | |
297 | *HEAD_PTR and END. Returns the directory before END, or NULL if none. | |
298 | This algorithm is quadratic in the number system directories, which is | |
299 | acceptable since there aren't usually that many of them. */ | |
300 | static struct search_path * | |
301 | remove_dup_nonsys_dirs (pfile, head_ptr, end) | |
302 | cpp_reader *pfile; | |
303 | struct search_path **head_ptr; | |
304 | struct search_path *end; | |
305 | { | |
d873d827 JDA |
306 | int sysdir = 0; |
307 | struct search_path *prev = NULL, *cur, *other; | |
48209ce5 JDA |
308 | |
309 | for (cur = *head_ptr; cur; cur = cur->next) | |
310 | { | |
311 | if (cur->sysp) | |
312 | { | |
d873d827 | 313 | sysdir = 1; |
48209ce5 JDA |
314 | for (other = *head_ptr, prev = NULL; |
315 | other != end; | |
316 | other = other ? other->next : *head_ptr) | |
317 | { | |
318 | if (!other->sysp | |
319 | && INO_T_EQ (cur->ino, other->ino) | |
320 | && cur->dev == other->dev) | |
321 | { | |
322 | other = remove_dup_dir (pfile, prev, head_ptr); | |
323 | if (CPP_OPTION (pfile, verbose)) | |
324 | fprintf (stderr, | |
325 | _(" as it is a non-system directory that duplicates a system directory\n")); | |
326 | } | |
327 | prev = other; | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
d873d827 JDA |
332 | if (!sysdir) |
333 | for (cur = *head_ptr; cur != end; cur = cur->next) | |
334 | prev = cur; | |
335 | ||
48209ce5 JDA |
336 | return prev; |
337 | } | |
338 | ||
dd69c71b NB |
339 | /* Remove duplicate directories from a chain. Returns the tail of the |
340 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
341 | in the number of -I switches, which is acceptable since there | |
342 | aren't usually that many of them. */ | |
002ee64f | 343 | static struct search_path * |
48209ce5 | 344 | remove_dup_dirs (pfile, head_ptr) |
dd69c71b | 345 | cpp_reader *pfile; |
48209ce5 | 346 | struct search_path **head_ptr; |
dd69c71b | 347 | { |
591e15a1 | 348 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b | 349 | |
48209ce5 | 350 | for (cur = *head_ptr; cur; cur = cur->next) |
dd69c71b | 351 | { |
48209ce5 | 352 | for (other = *head_ptr; other != cur; other = other->next) |
df383483 | 353 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) |
dd69c71b | 354 | { |
48209ce5 | 355 | cur = remove_dup_dir (pfile, prev, head_ptr); |
dd69c71b NB |
356 | break; |
357 | } | |
358 | prev = cur; | |
359 | } | |
360 | ||
361 | return prev; | |
362 | } | |
363 | ||
88ae23e7 ZW |
364 | /* Merge the four include chains together in the order quote, bracket, |
365 | system, after. Remove duplicate dirs (as determined by | |
366 | INO_T_EQ()). The system_include and after_include chains are never | |
367 | referred to again after this function; all access is through the | |
5d8ebbd8 | 368 | bracket_include path. */ |
88ae23e7 | 369 | static void |
ae79697b ZW |
370 | merge_include_chains (pfile) |
371 | cpp_reader *pfile; | |
88ae23e7 | 372 | { |
591e15a1 | 373 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 374 | |
ae79697b | 375 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 376 | |
ae79697b ZW |
377 | quote = pend->quote_head; |
378 | brack = pend->brack_head; | |
379 | systm = pend->systm_head; | |
dd69c71b | 380 | qtail = pend->quote_tail; |
88ae23e7 | 381 | |
dd69c71b NB |
382 | /* Paste together bracket, system, and after include chains. */ |
383 | if (systm) | |
384 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 385 | else |
dd69c71b NB |
386 | systm = pend->after_head; |
387 | ||
388 | if (brack) | |
389 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
390 | else |
391 | brack = systm; | |
392 | ||
48209ce5 JDA |
393 | /* This is a bit tricky. First we drop non-system dupes of system |
394 | directories from the merged bracket-include list. Next we drop | |
395 | dupes from the bracket and quote include lists. Then we drop | |
396 | non-system dupes from the merged quote-include list. Finally, | |
397 | if qtail and brack are the same directory, we cut out brack and | |
398 | move brack up to point to qtail. | |
88ae23e7 ZW |
399 | |
400 | We can't just merge the lists and then uniquify them because | |
401 | then we may lose directories from the <> search path that should | |
48209ce5 | 402 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however |
88ae23e7 | 403 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written |
dd69c71b | 404 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 405 | |
48209ce5 JDA |
406 | remove_dup_nonsys_dirs (pfile, &brack, systm); |
407 | remove_dup_dirs (pfile, &brack); | |
88ae23e7 ZW |
408 | |
409 | if (quote) | |
410 | { | |
48209ce5 | 411 | qtail = remove_dup_dirs (pfile, "e); |
dd69c71b NB |
412 | qtail->next = brack; |
413 | ||
48209ce5 JDA |
414 | qtail = remove_dup_nonsys_dirs (pfile, "e, brack); |
415 | ||
dd69c71b | 416 | /* If brack == qtail, remove brack as it's simpler. */ |
48209ce5 | 417 | if (qtail && brack && INO_T_EQ (qtail->ino, brack->ino) |
afb58288 | 418 | && qtail->dev == brack->dev) |
48209ce5 | 419 | brack = remove_dup_dir (pfile, qtail, "e); |
88ae23e7 ZW |
420 | } |
421 | else | |
bef985f3 | 422 | quote = brack; |
88ae23e7 | 423 | |
ae79697b ZW |
424 | CPP_OPTION (pfile, quote_include) = quote; |
425 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
426 | } |
427 | ||
5d8ebbd8 NB |
428 | /* A set of booleans indicating what CPP features each source language |
429 | requires. */ | |
a01eb545 ZW |
430 | struct lang_flags |
431 | { | |
432 | char c99; | |
a01eb545 ZW |
433 | char cplusplus; |
434 | char extended_numbers; | |
58551c23 | 435 | char std; |
a01eb545 ZW |
436 | char dollars_in_ident; |
437 | char cplusplus_comments; | |
438 | char digraphs; | |
439 | }; | |
440 | ||
441 | /* ??? Enable $ in identifiers in assembly? */ | |
442 | static const struct lang_flags lang_defaults[] = | |
58551c23 | 443 | { /* c99 c++ xnum std dollar c++comm digr */ |
bdcae02b NB |
444 | /* GNUC89 */ { 0, 0, 1, 0, 1, 1, 1 }, |
445 | /* GNUC99 */ { 1, 0, 1, 0, 1, 1, 1 }, | |
446 | /* STDC89 */ { 0, 0, 0, 1, 0, 0, 0 }, | |
447 | /* STDC94 */ { 0, 0, 0, 1, 0, 0, 1 }, | |
448 | /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1 }, | |
449 | /* GNUCXX */ { 0, 1, 1, 0, 1, 1, 1 }, | |
450 | /* CXX98 */ { 0, 1, 1, 1, 0, 1, 1 }, | |
451 | /* ASM */ { 0, 0, 1, 0, 0, 1, 0 } | |
a01eb545 ZW |
452 | }; |
453 | ||
5d8ebbd8 | 454 | /* Sets internal flags correctly for a given language. */ |
f749a36b NB |
455 | void |
456 | cpp_set_lang (pfile, lang) | |
dd07b884 NB |
457 | cpp_reader *pfile; |
458 | enum c_lang lang; | |
459 | { | |
a01eb545 | 460 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
df383483 | 461 | |
bdb05a7b | 462 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 463 | |
a01eb545 | 464 | CPP_OPTION (pfile, c99) = l->c99; |
a01eb545 ZW |
465 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; |
466 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
58551c23 NB |
467 | CPP_OPTION (pfile, std) = l->std; |
468 | CPP_OPTION (pfile, trigraphs) = l->std; | |
a01eb545 ZW |
469 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; |
470 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
471 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
472 | } |
473 | ||
7ca3d2b1 NB |
474 | #ifdef HOST_EBCDIC |
475 | static int opt_comp PARAMS ((const void *, const void *)); | |
476 | ||
477 | /* Run-time sorting of options array. */ | |
478 | static int | |
479 | opt_comp (p1, p2) | |
480 | const void *p1, *p2; | |
481 | { | |
482 | return strcmp (((struct cl_option *) p1)->opt_text, | |
483 | ((struct cl_option *) p2)->opt_text); | |
484 | } | |
485 | #endif | |
cf44ea52 | 486 | |
7ca3d2b1 NB |
487 | /* init initializes library global state. It might not need to |
488 | do anything depending on the platform and compiler. */ | |
cf44ea52 | 489 | static void |
674c3b40 | 490 | init_library () |
cf44ea52 | 491 | { |
7ca3d2b1 NB |
492 | static int initialized = 0; |
493 | ||
494 | if (! initialized) | |
495 | { | |
496 | initialized = 1; | |
497 | ||
cf44ea52 | 498 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
499 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
500 | runtime. */ | |
501 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
502 | #endif |
503 | ||
7ca3d2b1 NB |
504 | /* Set up the trigraph map. This doesn't need to do anything if |
505 | we were compiled with a compiler that supports C99 designated | |
506 | initializers. */ | |
507 | init_trigraph_map (); | |
508 | } | |
cf44ea52 NB |
509 | } |
510 | ||
ec5c56db | 511 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 512 | cpp_reader * |
f5e99456 | 513 | cpp_create_reader (lang) |
dd07b884 | 514 | enum c_lang lang; |
6de1e2a9 | 515 | { |
7ca3d2b1 | 516 | cpp_reader *pfile; |
93c80368 | 517 | |
cf44ea52 | 518 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 519 | init_library (); |
7ca3d2b1 NB |
520 | |
521 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 522 | |
f749a36b | 523 | cpp_set_lang (pfile, lang); |
ae79697b | 524 | CPP_OPTION (pfile, warn_import) = 1; |
a5a49440 | 525 | CPP_OPTION (pfile, warn_multichar) = 1; |
ae79697b | 526 | CPP_OPTION (pfile, discard_comments) = 1; |
477cdac7 | 527 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; |
ae79697b | 528 | CPP_OPTION (pfile, show_column) = 1; |
6ab3e7dd | 529 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 530 | CPP_OPTION (pfile, operator_names) = 1; |
909de5da | 531 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
f4ff5a69 | 532 | CPP_OPTION (pfile, warn_long_long) = !CPP_OPTION (pfile, c99); |
ae79697b ZW |
533 | |
534 | CPP_OPTION (pfile, pending) = | |
535 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
536 | ||
2443d4e1 NB |
537 | /* Default CPP arithmetic to something sensible for the host for the |
538 | benefit of dumb users like fix-header. */ | |
c9220e3a | 539 | CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long); |
2443d4e1 NB |
540 | CPP_OPTION (pfile, char_precision) = CHAR_BIT; |
541 | CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int); | |
542 | CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int); | |
2a1dc0d8 | 543 | CPP_OPTION (pfile, unsigned_char) = 0; |
44a147ad | 544 | CPP_OPTION (pfile, unsigned_wchar) = 1; |
4268e8bb | 545 | |
50410426 NB |
546 | /* Initialise the line map. Start at logical line 1, so we can use |
547 | a line number of zero for special states. */ | |
d82fc108 | 548 | init_line_maps (&pfile->line_maps); |
1a76916c | 549 | pfile->line = 1; |
d82fc108 | 550 | |
4a58aab6 | 551 | /* Initialize lexer state. */ |
93c80368 NB |
552 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
553 | ||
4ed5bcfb | 554 | /* Set up static tokens. */ |
4ed5bcfb NB |
555 | pfile->avoid_paste.type = CPP_PADDING; |
556 | pfile->avoid_paste.val.source = NULL; | |
557 | pfile->eof.type = CPP_EOF; | |
558 | pfile->eof.flags = 0; | |
93c80368 | 559 | |
5fddcffc NB |
560 | /* Create a token buffer for the lexer. */ |
561 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
562 | pfile->cur_run = &pfile->base_run; | |
563 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 564 | |
93c80368 NB |
565 | /* Initialise the base context. */ |
566 | pfile->context = &pfile->base_context; | |
567 | pfile->base_context.macro = 0; | |
568 | pfile->base_context.prev = pfile->base_context.next = 0; | |
569 | ||
8c3b2693 NB |
570 | /* Aligned and unaligned storage. */ |
571 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
ece54d54 | 572 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
93c80368 | 573 | |
87ed109f NB |
574 | /* The expression parser stack. */ |
575 | _cpp_expand_op_stack (pfile); | |
576 | ||
2a967f3d NB |
577 | /* Initialise the buffer obstack. */ |
578 | gcc_obstack_init (&pfile->buffer_ob); | |
579 | ||
c71f835b | 580 | _cpp_init_includes (pfile); |
cf44ea52 NB |
581 | |
582 | return pfile; | |
f2d5f0cc ZW |
583 | } |
584 | ||
400023a3 | 585 | /* Free resources used by PFILE. Accessing PFILE after this function |
5d8ebbd8 | 586 | returns leads to undefined behaviour. Returns the error count. */ |
76c3e73e | 587 | void |
400023a3 | 588 | cpp_destroy (pfile) |
6de1e2a9 ZW |
589 | cpp_reader *pfile; |
590 | { | |
591e15a1 | 591 | struct search_path *dir, *dirn; |
93c80368 | 592 | cpp_context *context, *contextn; |
50410426 | 593 | tokenrun *run, *runn; |
709e9e50 | 594 | |
af0d16cd NB |
595 | free_chain (CPP_OPTION (pfile, pending)->include_head); |
596 | free (CPP_OPTION (pfile, pending)); | |
87ed109f | 597 | free (pfile->op_stack); |
af0d16cd | 598 | |
38b24ee2 | 599 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 600 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 601 | |
1a76916c NB |
602 | if (pfile->out.base) |
603 | free (pfile->out.base); | |
004cb263 | 604 | |
93c80368 | 605 | if (pfile->macro_buffer) |
4b49c365 AO |
606 | { |
607 | free ((PTR) pfile->macro_buffer); | |
608 | pfile->macro_buffer = NULL; | |
609 | pfile->macro_buffer_len = 0; | |
610 | } | |
93c80368 | 611 | |
f4ff5a69 NB |
612 | if (pfile->deps) |
613 | deps_free (pfile->deps); | |
2a967f3d | 614 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 615 | |
2a967f3d | 616 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 617 | _cpp_cleanup_includes (pfile); |
709e9e50 | 618 | |
8c3b2693 | 619 | _cpp_free_buff (pfile->a_buff); |
ece54d54 | 620 | _cpp_free_buff (pfile->u_buff); |
b8af0ca5 | 621 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 622 | |
50410426 NB |
623 | for (run = &pfile->base_run; run; run = runn) |
624 | { | |
625 | runn = run->next; | |
626 | free (run->base); | |
627 | if (run != &pfile->base_run) | |
628 | free (run); | |
629 | } | |
630 | ||
93c80368 | 631 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 632 | { |
93c80368 | 633 | dirn = dir->next; |
591e15a1 | 634 | free ((PTR) dir->name); |
709e9e50 NB |
635 | free (dir); |
636 | } | |
93c80368 NB |
637 | |
638 | for (context = pfile->base_context.next; context; context = contextn) | |
639 | { | |
640 | contextn = context->next; | |
641 | free (context); | |
642 | } | |
400023a3 | 643 | |
d82fc108 | 644 | free_line_maps (&pfile->line_maps); |
400023a3 | 645 | free (pfile); |
6de1e2a9 ZW |
646 | } |
647 | ||
93c80368 | 648 | /* This structure defines one built-in identifier. A node will be |
f24a153a ZW |
649 | entered in the hash table under the name NAME, with value VALUE. |
650 | ||
651 | There are two tables of these. builtin_array holds all the | |
652 | "builtin" macros: these are handled by builtin_macro() in | |
653 | cppmacro.c. Builtin is somewhat of a misnomer -- the property of | |
654 | interest is that these macros require special code to compute their | |
655 | expansions. The value is a "builtin_type" enumerator. | |
656 | ||
657 | operator_array holds the C++ named operators. These are keywords | |
658 | which act as aliases for punctuators. In C++, they cannot be | |
659 | altered through #define, and #if recognizes them as operators. In | |
660 | C, these are not entered into the hash table at all (but see | |
661 | <iso646.h>). The value is a token-type enumerator. */ | |
a9ae4483 ZW |
662 | struct builtin |
663 | { | |
562a5c27 | 664 | const uchar *name; |
93c80368 | 665 | unsigned short len; |
f24a153a | 666 | unsigned short value; |
a9ae4483 | 667 | }; |
93c80368 | 668 | |
f24a153a | 669 | #define B(n, t) { DSC(n), t } |
a9ae4483 | 670 | static const struct builtin builtin_array[] = |
6de1e2a9 | 671 | { |
93c80368 NB |
672 | B("__TIME__", BT_TIME), |
673 | B("__DATE__", BT_DATE), | |
674 | B("__FILE__", BT_FILE), | |
675 | B("__BASE_FILE__", BT_BASE_FILE), | |
676 | B("__LINE__", BT_SPECLINE), | |
677 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
278c4662 NB |
678 | /* Keep builtins not used for -traditional-cpp at the end, and |
679 | update init_builtins() if any more are added. */ | |
644eddaa | 680 | B("_Pragma", BT_PRAGMA), |
618cdda7 | 681 | B("__STDC__", BT_STDC), |
f24a153a | 682 | }; |
92936ecf | 683 | |
f24a153a ZW |
684 | static const struct builtin operator_array[] = |
685 | { | |
686 | B("and", CPP_AND_AND), | |
687 | B("and_eq", CPP_AND_EQ), | |
688 | B("bitand", CPP_AND), | |
689 | B("bitor", CPP_OR), | |
690 | B("compl", CPP_COMPL), | |
691 | B("not", CPP_NOT), | |
692 | B("not_eq", CPP_NOT_EQ), | |
693 | B("or", CPP_OR_OR), | |
694 | B("or_eq", CPP_OR_EQ), | |
695 | B("xor", CPP_XOR), | |
696 | B("xor_eq", CPP_XOR_EQ) | |
a9ae4483 | 697 | }; |
12cf91fe | 698 | #undef B |
a9ae4483 | 699 | |
17645b15 NB |
700 | /* Mark the C++ named operators in the hash table. */ |
701 | static void | |
702 | mark_named_operators (pfile) | |
703 | cpp_reader *pfile; | |
704 | { | |
705 | const struct builtin *b; | |
706 | ||
707 | for (b = operator_array; | |
708 | b < (operator_array + ARRAY_SIZE (operator_array)); | |
709 | b++) | |
710 | { | |
711 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
712 | hp->flags |= NODE_OPERATOR; | |
713 | hp->value.operator = b->value; | |
714 | } | |
715 | } | |
716 | ||
f5e99456 | 717 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
5d8ebbd8 | 718 | enters them, and language-specific macros, into the hash table. */ |
a9ae4483 | 719 | static void |
7ca3d2b1 | 720 | init_builtins (pfile) |
a9ae4483 ZW |
721 | cpp_reader *pfile; |
722 | { | |
a9ae4483 | 723 | const struct builtin *b; |
278c4662 | 724 | size_t n = ARRAY_SIZE (builtin_array); |
771c4df3 | 725 | |
278c4662 NB |
726 | if (CPP_OPTION (pfile, traditional)) |
727 | n -= 2; | |
728 | ||
729 | for(b = builtin_array; b < builtin_array + n; b++) | |
6de1e2a9 | 730 | { |
f24a153a ZW |
731 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
732 | hp->type = NT_MACRO; | |
733 | hp->flags |= NODE_BUILTIN | NODE_WARN; | |
734 | hp->value.builtin = b->value; | |
6de1e2a9 | 735 | } |
c740cee2 NB |
736 | |
737 | if (CPP_OPTION (pfile, cplusplus)) | |
3d90d290 | 738 | _cpp_define_builtin (pfile, "__cplusplus 1"); |
2a1dc0d8 ZW |
739 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) |
740 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
0f7866e7 | 741 | else if (CPP_OPTION (pfile, lang) == CLK_STDC94) |
c740cee2 NB |
742 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); |
743 | else if (CPP_OPTION (pfile, c99)) | |
744 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
745 | ||
0f7866e7 ZL |
746 | if (CPP_OPTION (pfile, objc)) |
747 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
748 | ||
3d90d290 NB |
749 | if (pfile->cb.register_builtins) |
750 | (*pfile->cb.register_builtins) (pfile); | |
6de1e2a9 ZW |
751 | } |
752 | ||
c45da1ca ZW |
753 | /* And another subroutine. This one sets up the standard include path. */ |
754 | static void | |
7ca3d2b1 | 755 | init_standard_includes (pfile) |
c45da1ca ZW |
756 | cpp_reader *pfile; |
757 | { | |
c45da1ca | 758 | char *path; |
455d2586 | 759 | const struct default_include *p; |
ae79697b | 760 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
761 | |
762 | /* Several environment variables may add to the include search path. | |
763 | CPATH specifies an additional list of directories to be searched | |
764 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
765 | etc. specify an additional list of directories to be searched as | |
766 | if specified with -isystem, for the language indicated. */ | |
767 | ||
2f8dd115 | 768 | GET_ENVIRONMENT (path, "CPATH"); |
c45da1ca | 769 | if (path != 0 && *path != 0) |
e33f6253 | 770 | path_include (pfile, path, BRACKET); |
c45da1ca | 771 | |
ae79697b | 772 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
773 | { |
774 | case 0: | |
2f8dd115 | 775 | GET_ENVIRONMENT (path, "C_INCLUDE_PATH"); |
c45da1ca ZW |
776 | break; |
777 | case 1: | |
2f8dd115 | 778 | GET_ENVIRONMENT (path, "CPLUS_INCLUDE_PATH"); |
c45da1ca ZW |
779 | break; |
780 | case 2: | |
2f8dd115 | 781 | GET_ENVIRONMENT (path, "OBJC_INCLUDE_PATH"); |
c45da1ca ZW |
782 | break; |
783 | case 3: | |
2f8dd115 | 784 | GET_ENVIRONMENT (path, "OBJCPLUS_INCLUDE_PATH"); |
c45da1ca ZW |
785 | break; |
786 | } | |
787 | if (path != 0 && *path != 0) | |
e33f6253 | 788 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
789 | |
790 | /* Search "translated" versions of GNU directories. | |
791 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 792 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 793 | { |
c45da1ca | 794 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 795 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
796 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
797 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
798 | int specd_len = strlen (specd_prefix); |
799 | ||
60893f43 | 800 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
801 | default_prefix[default_len] = '\0'; |
802 | ||
60893f43 | 803 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
804 | { |
805 | /* Some standard dirs are only for C++. */ | |
806 | if (!p->cplusplus | |
ae79697b ZW |
807 | || (CPP_OPTION (pfile, cplusplus) |
808 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
809 | { |
810 | /* Does this dir start with the prefix? */ | |
61d0346d | 811 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
812 | { |
813 | /* Yes; change prefix and add to search list. */ | |
814 | int flen = strlen (p->fname); | |
815 | int this_len = specd_len + flen - default_len; | |
816 | char *str = (char *) xmalloc (this_len + 1); | |
817 | memcpy (str, specd_prefix, specd_len); | |
818 | memcpy (str + specd_len, | |
819 | p->fname + default_len, | |
820 | flen - default_len + 1); | |
821 | ||
e33f6253 | 822 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
823 | } |
824 | } | |
825 | } | |
826 | } | |
827 | ||
828 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 829 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
830 | { |
831 | /* Some standard dirs are only for C++. */ | |
832 | if (!p->cplusplus | |
ae79697b ZW |
833 | || (CPP_OPTION (pfile, cplusplus) |
834 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 835 | { |
51c04256 | 836 | char *str = update_path (p->fname, p->component); |
e33f6253 | 837 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
838 | } |
839 | } | |
840 | } | |
841 | ||
5d8ebbd8 | 842 | /* Pushes a command line -imacro and -include file indicated by P onto |
d7bc7a98 NB |
843 | the buffer stack. Returns non-zero if successful. */ |
844 | static bool | |
845 | push_include (pfile, p) | |
4a58aab6 NB |
846 | cpp_reader *pfile; |
847 | struct pending_option *p; | |
4a58aab6 | 848 | { |
d7bc7a98 | 849 | cpp_token header; |
4a58aab6 | 850 | |
d7bc7a98 NB |
851 | /* Later: maybe update this to use the #include "" search path |
852 | if cpp_read_file fails. */ | |
853 | header.type = CPP_STRING; | |
854 | header.val.str.text = (const unsigned char *) p->arg; | |
855 | header.val.str.len = strlen (p->arg); | |
856 | /* Make the command line directive take up a line. */ | |
50410426 | 857 | pfile->line++; |
d7bc7a98 NB |
858 | |
859 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
860 | } | |
861 | ||
862 | /* Frees a pending_option chain. */ | |
863 | static void | |
864 | free_chain (head) | |
865 | struct pending_option *head; | |
866 | { | |
867 | struct pending_option *next; | |
868 | ||
869 | while (head) | |
870 | { | |
871 | next = head->next; | |
872 | free (head); | |
873 | head = next; | |
4a58aab6 NB |
874 | } |
875 | } | |
876 | ||
2443d4e1 NB |
877 | /* Sanity-checks are dependent on command-line options, so it is |
878 | called as a subroutine of cpp_read_main_file (). */ | |
879 | #if ENABLE_CHECKING | |
880 | static void sanity_checks PARAMS ((cpp_reader *)); | |
881 | static void sanity_checks (pfile) | |
882 | cpp_reader *pfile; | |
883 | { | |
884 | cppchar_t test = 0; | |
c9220e3a | 885 | size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part); |
2443d4e1 NB |
886 | |
887 | /* Sanity checks for assumptions about CPP arithmetic and target | |
888 | type precisions made by cpplib. */ | |
889 | test--; | |
890 | if (test < 1) | |
bdee42b1 | 891 | cpp_error (pfile, DL_ICE, "cppchar_t must be an unsigned type"); |
2443d4e1 | 892 | |
c9220e3a | 893 | if (CPP_OPTION (pfile, precision) > max_precision) |
bdee42b1 | 894 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 895 | "preprocessor arithmetic has maximum precision of %lu bits; target requires %lu bits", |
c9220e3a NB |
896 | (unsigned long) max_precision, |
897 | (unsigned long) CPP_OPTION (pfile, precision)); | |
2443d4e1 NB |
898 | |
899 | if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision)) | |
bdee42b1 | 900 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
901 | "CPP arithmetic must be at least as precise as a target int"); |
902 | ||
903 | if (CPP_OPTION (pfile, char_precision) < 8) | |
bdee42b1 | 904 | cpp_error (pfile, DL_ICE, "target char is less than 8 bits wide"); |
2443d4e1 NB |
905 | |
906 | if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 907 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
908 | "target wchar_t is narrower than target char"); |
909 | ||
910 | if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 911 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
912 | "target int is narrower than target char"); |
913 | ||
c9220e3a NB |
914 | /* This is assumed in eval_token() and could be fixed if necessary. */ |
915 | if (sizeof (cppchar_t) > sizeof (cpp_num_part)) | |
916 | cpp_error (pfile, DL_ICE, "CPP half-integer narrower than CPP character"); | |
917 | ||
2443d4e1 | 918 | if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T) |
bdee42b1 | 919 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 920 | "CPP on this host cannot handle wide character constants over %lu bits, but the target requires %lu bits", |
c9220e3a NB |
921 | (unsigned long) BITS_PER_CPPCHAR_T, |
922 | (unsigned long) CPP_OPTION (pfile, wchar_precision)); | |
2443d4e1 NB |
923 | } |
924 | #else | |
925 | # define sanity_checks(PFILE) | |
926 | #endif | |
927 | ||
76c3e73e NB |
928 | /* Add a dependency target. Can be called any number of times before |
929 | cpp_read_main_file(). If no targets have been added before | |
930 | cpp_read_main_file(), then the default target is used. */ | |
931 | void | |
932 | cpp_add_dependency_target (pfile, target, quote) | |
933 | cpp_reader *pfile; | |
934 | const char *target; | |
935 | int quote; | |
936 | { | |
937 | if (!pfile->deps) | |
938 | pfile->deps = deps_init (); | |
939 | ||
940 | deps_add_target (pfile->deps, target, quote); | |
941 | } | |
942 | ||
f5e99456 NB |
943 | /* This is called after options have been parsed, and partially |
944 | processed. Setup for processing input from the file named FNAME, | |
945 | or stdin if it is the empty string. Return the original filename | |
946 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
947 | const char * | |
948 | cpp_read_main_file (pfile, fname, table) | |
6de1e2a9 | 949 | cpp_reader *pfile; |
7ceb3598 | 950 | const char *fname; |
f5e99456 | 951 | hash_table *table; |
6de1e2a9 | 952 | { |
2443d4e1 NB |
953 | sanity_checks (pfile); |
954 | ||
f4ff5a69 NB |
955 | post_options (pfile); |
956 | ||
f5e99456 NB |
957 | /* The front ends don't set up the hash table until they have |
958 | finished processing the command line options, so initializing the | |
959 | hashtable is deferred until now. */ | |
960 | _cpp_init_hashtable (pfile, table); | |
961 | ||
c45da1ca | 962 | /* Set up the include search path now. */ |
ae79697b | 963 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 964 | init_standard_includes (pfile); |
c45da1ca | 965 | |
ae79697b | 966 | merge_include_chains (pfile); |
c45da1ca ZW |
967 | |
968 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 969 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 970 | { |
591e15a1 | 971 | struct search_path *l; |
c45da1ca | 972 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 973 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 974 | { |
ae79697b | 975 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
976 | fprintf (stderr, _("#include <...> search starts here:\n")); |
977 | fprintf (stderr, " %s\n", l->name); | |
978 | } | |
979 | fprintf (stderr, _("End of search list.\n")); | |
980 | } | |
981 | ||
f4ff5a69 NB |
982 | if (CPP_OPTION (pfile, deps.style) != DEPS_NONE) |
983 | { | |
984 | if (!pfile->deps) | |
985 | pfile->deps = deps_init (); | |
986 | ||
987 | /* Set the default target (if there is none already). */ | |
988 | deps_add_default_target (pfile->deps, fname); | |
989 | } | |
96302433 | 990 | |
f5e99456 | 991 | /* Open the main input file. */ |
614c7d37 | 992 | if (!_cpp_read_file (pfile, fname)) |
f5e99456 | 993 | return NULL; |
c45da1ca | 994 | |
f4ff5a69 NB |
995 | /* Set this here so the client can change the option if it wishes, |
996 | and after stacking the main file so we don't trace the main | |
997 | file. */ | |
5993019d NB |
998 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); |
999 | ||
f5e99456 NB |
1000 | /* For foo.i, read the original filename foo.c now, for the benefit |
1001 | of the front ends. */ | |
1002 | if (CPP_OPTION (pfile, preprocessed)) | |
1003 | read_original_filename (pfile); | |
1004 | ||
1005 | return pfile->map->to_file; | |
1006 | } | |
1007 | ||
1008 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
1009 | handle the directive so we know the original file name. This will | |
1010 | generate file_change callbacks, which the front ends must handle | |
1011 | appropriately given their state of initialization. */ | |
1012 | static void | |
1013 | read_original_filename (pfile) | |
1014 | cpp_reader *pfile; | |
1015 | { | |
1016 | const cpp_token *token, *token1; | |
1017 | ||
1018 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
1019 | process the directive, otherwise back up. */ | |
1020 | token = _cpp_lex_direct (pfile); | |
1021 | if (token->type == CPP_HASH) | |
1022 | { | |
1023 | token1 = _cpp_lex_direct (pfile); | |
1024 | _cpp_backup_tokens (pfile, 1); | |
1025 | ||
1026 | /* If it's a #line directive, handle it. */ | |
1027 | if (token1->type == CPP_NUMBER) | |
1028 | { | |
1029 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
1030 | return; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* Backup as if nothing happened. */ | |
1035 | _cpp_backup_tokens (pfile, 1); | |
1036 | } | |
1037 | ||
1038 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
1039 | -include. This should be called after debugging has been properly | |
1040 | set up in the front ends. */ | |
1041 | void | |
1042 | cpp_finish_options (pfile) | |
1043 | cpp_reader *pfile; | |
1044 | { | |
17645b15 NB |
1045 | /* Mark named operators before handling command line macros. */ |
1046 | if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names)) | |
1047 | mark_named_operators (pfile); | |
1048 | ||
d7bc7a98 NB |
1049 | /* Install builtins and process command line macros etc. in the order |
1050 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 1051 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 1052 | { |
d7bc7a98 NB |
1053 | struct pending_option *p; |
1054 | ||
b0287a90 | 1055 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
cbc69f84 | 1056 | init_builtins (pfile); |
d7bc7a98 | 1057 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); |
cbc69f84 NB |
1058 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) |
1059 | (*p->handler) (pfile, p->arg); | |
d7bc7a98 | 1060 | |
af0d16cd NB |
1061 | /* Scan -imacros files after -D, -U, but before -include. |
1062 | pfile->next_include_file is NULL, so _cpp_pop_buffer does not | |
1063 | push -include files. */ | |
1064 | for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next) | |
1065 | if (push_include (pfile, p)) | |
1066 | cpp_scan_nooutput (pfile); | |
1067 | ||
1068 | pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head; | |
1069 | _cpp_maybe_push_include_file (pfile); | |
6de1e2a9 | 1070 | } |
05e81724 | 1071 | |
a69cbaac NB |
1072 | pfile->first_unused_line = pfile->line; |
1073 | ||
af0d16cd | 1074 | free_chain (CPP_OPTION (pfile, pending)->imacros_head); |
d7bc7a98 | 1075 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 1076 | } |
6de1e2a9 | 1077 | |
af0d16cd NB |
1078 | /* Push the next buffer on the stack given by -include, if any. */ |
1079 | void | |
1080 | _cpp_maybe_push_include_file (pfile) | |
d7bc7a98 NB |
1081 | cpp_reader *pfile; |
1082 | { | |
af0d16cd | 1083 | if (pfile->next_include_file) |
d7bc7a98 | 1084 | { |
af0d16cd | 1085 | struct pending_option *head = *pfile->next_include_file; |
df383483 | 1086 | |
af0d16cd NB |
1087 | while (head && !push_include (pfile, head)) |
1088 | head = head->next; | |
d7bc7a98 | 1089 | |
af0d16cd NB |
1090 | if (head) |
1091 | pfile->next_include_file = &head->next; | |
1092 | else | |
d7bc7a98 | 1093 | { |
af0d16cd NB |
1094 | /* All done; restore the line map from <command line>. */ |
1095 | _cpp_do_file_change (pfile, LC_RENAME, | |
1096 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1097 | /* Don't come back here again. */ | |
1098 | pfile->next_include_file = NULL; | |
d7bc7a98 NB |
1099 | } |
1100 | } | |
6de1e2a9 ZW |
1101 | } |
1102 | ||
76c3e73e NB |
1103 | /* This is called at the end of preprocessing. It pops the last |
1104 | buffer and writes dependency output, and returns the number of | |
1105 | errors. | |
1106 | ||
1107 | Maybe it should also reset state, such that you could call | |
1108 | cpp_start_read with a new filename to restart processing. */ | |
1109 | int | |
1110 | cpp_finish (pfile, deps_stream) | |
6de1e2a9 | 1111 | cpp_reader *pfile; |
76c3e73e | 1112 | FILE *deps_stream; |
6de1e2a9 | 1113 | { |
a69cbaac NB |
1114 | /* Warn about unused macros before popping the final buffer. */ |
1115 | if (CPP_OPTION (pfile, warn_unused_macros)) | |
1116 | cpp_forall_identifiers (pfile, _cpp_warn_if_unused_macro, NULL); | |
1117 | ||
7364fdd8 NB |
1118 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1119 | it returns an unending stream of CPP_EOFs to the client. If we | |
a1f300c0 | 1120 | popped the buffer, we'd dereference a NULL buffer pointer and |
7364fdd8 NB |
1121 | segfault. It's nice to allow the client to do worry-free excess |
1122 | cpp_get_token calls. */ | |
1123 | while (pfile->buffer) | |
1124 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1125 | |
76c3e73e | 1126 | /* Don't write the deps file if there are errors. */ |
f4ff5a69 NB |
1127 | if (CPP_OPTION (pfile, deps.style) != DEPS_NONE |
1128 | && deps_stream && pfile->errors == 0) | |
76c3e73e NB |
1129 | { |
1130 | deps_write (pfile->deps, deps_stream, 72); | |
1131 | ||
f4ff5a69 | 1132 | if (CPP_OPTION (pfile, deps.phony_targets)) |
76c3e73e NB |
1133 | deps_phony_targets (pfile->deps, deps_stream); |
1134 | } | |
3caee4a8 | 1135 | |
d4506961 ZW |
1136 | /* Report on headers that could use multiple include guards. */ |
1137 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1138 | _cpp_report_missing_guards (pfile); |
76c3e73e NB |
1139 | |
1140 | return pfile->errors; | |
6de1e2a9 ZW |
1141 | } |
1142 | ||
5d8ebbd8 | 1143 | /* Add a directive to be handled later in the initialization phase. */ |
223dca6a | 1144 | static void |
ae79697b ZW |
1145 | new_pending_directive (pend, text, handler) |
1146 | struct cpp_pending *pend; | |
223dca6a | 1147 | const char *text; |
40eac643 | 1148 | cl_directive_handler handler; |
223dca6a RH |
1149 | { |
1150 | struct pending_option *o = (struct pending_option *) | |
1151 | xmalloc (sizeof (struct pending_option)); | |
1152 | ||
7ceb3598 | 1153 | o->arg = text; |
223dca6a | 1154 | o->next = NULL; |
40eac643 | 1155 | o->handler = handler; |
ae79697b | 1156 | APPEND (pend, directive, o); |
223dca6a RH |
1157 | } |
1158 | ||
ae79697b ZW |
1159 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1160 | I.e. a const string initializer with parens around it. That is | |
1161 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
c725bd79 NB |
1162 | #define no_ass N_("assertion missing after %s") |
1163 | #define no_dir N_("directory name missing after %s") | |
1164 | #define no_fil N_("file name missing after %s") | |
1165 | #define no_mac N_("macro name missing after %s") | |
1166 | #define no_pth N_("path name missing after %s") | |
ae79697b ZW |
1167 | |
1168 | /* This is the list of all command line options, with the leading | |
1169 | "-" removed. It must be sorted in ASCII collating order. */ | |
1170 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b | 1171 | DEF_OPT("A", no_ass, OPT_A) \ |
ae79697b | 1172 | DEF_OPT("D", no_mac, OPT_D) \ |
ae79697b | 1173 | DEF_OPT("I", no_dir, OPT_I) \ |
ae79697b | 1174 | DEF_OPT("U", no_mac, OPT_U) \ |
ae79697b ZW |
1175 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ |
1176 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1177 | DEF_OPT("include", no_fil, OPT_include) \ | |
1178 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1179 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1180 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
b4a93904 | 1181 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) |
ae79697b ZW |
1182 | |
1183 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1184 | enum opt_code |
1185 | { | |
ae79697b | 1186 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1187 | N_OPTS |
1188 | }; | |
ae79697b | 1189 | #undef DEF_OPT |
e23c0ba3 ZW |
1190 | |
1191 | struct cl_option | |
1192 | { | |
1193 | const char *opt_text; | |
1194 | const char *msg; | |
1195 | size_t opt_len; | |
1196 | enum opt_code opt_code; | |
1197 | }; | |
1198 | ||
ae79697b | 1199 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1200 | #ifdef HOST_EBCDIC |
1201 | static struct cl_option cl_options[] = | |
1202 | #else | |
1203 | static const struct cl_option cl_options[] = | |
1204 | #endif | |
1205 | { | |
ae79697b | 1206 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1207 | }; |
1208 | #undef DEF_OPT | |
ae79697b | 1209 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1210 | |
1211 | /* Perform a binary search to find which, if any, option the given | |
1212 | command-line matches. Returns its index in the option array, | |
1213 | negative on failure. Complications arise since some options can be | |
1214 | suffixed with an argument, and multiple complete matches can occur, | |
09e77dee | 1215 | e.g. -pedantic and -pedantic-errors. */ |
e23c0ba3 ZW |
1216 | static int |
1217 | parse_option (input) | |
1218 | const char *input; | |
1219 | { | |
1220 | unsigned int md, mn, mx; | |
1221 | size_t opt_len; | |
1222 | int comp; | |
1223 | ||
1224 | mn = 0; | |
1225 | mx = N_OPTS; | |
1226 | ||
1227 | while (mx > mn) | |
1228 | { | |
1229 | md = (mn + mx) / 2; | |
ae79697b | 1230 | |
e23c0ba3 | 1231 | opt_len = cl_options[md].opt_len; |
61d0346d | 1232 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1233 | |
e23c0ba3 ZW |
1234 | if (comp > 0) |
1235 | mn = md + 1; | |
1236 | else if (comp < 0) | |
1237 | mx = md; | |
1238 | else | |
1239 | { | |
1240 | if (input[opt_len] == '\0') | |
1241 | return md; | |
1242 | /* We were passed more text. If the option takes an argument, | |
1243 | we may match a later option or we may have been passed the | |
1244 | argument. The longest possible option match succeeds. | |
1245 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1246 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1247 | mn = md + 1; |
1248 | if (cl_options[md].msg) | |
1249 | { | |
1250 | /* Scan forwards. If we get an exact match, return it. | |
1251 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1252 | This loops no more than twice with current options. */ |
e23c0ba3 | 1253 | mx = md; |
37b8524c | 1254 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1255 | { |
1256 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1257 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1258 | break; |
1259 | if (input[opt_len] == '\0') | |
1260 | return mn; | |
1261 | if (cl_options[mn].msg) | |
1262 | mx = mn; | |
1263 | } | |
1264 | return mx; | |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | return -1; | |
1270 | } | |
1271 | ||
6de1e2a9 ZW |
1272 | /* Handle one command-line option in (argc, argv). |
1273 | Can be called multiple times, to handle multiple sets of options. | |
1274 | Returns number of strings consumed. */ | |
2c0accc9 | 1275 | int |
09e77dee | 1276 | cpp_handle_option (pfile, argc, argv) |
6de1e2a9 ZW |
1277 | cpp_reader *pfile; |
1278 | int argc; | |
1279 | char **argv; | |
1280 | { | |
6de1e2a9 | 1281 | int i = 0; |
f8f769ea | 1282 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1283 | |
e23c0ba3 ZW |
1284 | { |
1285 | enum opt_code opt_code; | |
1286 | int opt_index; | |
7ceb3598 | 1287 | const char *arg = 0; |
e23c0ba3 | 1288 | |
4a58aab6 | 1289 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1290 | opt_index = parse_option (&argv[i][1]); |
1291 | if (opt_index < 0) | |
1292 | return i; | |
1293 | ||
1294 | opt_code = cl_options[opt_index].opt_code; | |
1295 | if (cl_options[opt_index].msg) | |
1296 | { | |
1297 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
09e77dee | 1298 | if (arg[0] == '\0') |
e23c0ba3 ZW |
1299 | { |
1300 | arg = argv[++i]; | |
1301 | if (!arg) | |
1302 | { | |
bdee42b1 | 1303 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1304 | cl_options[opt_index].msg, argv[i - 1]); |
e23c0ba3 ZW |
1305 | return argc; |
1306 | } | |
1307 | } | |
1308 | } | |
ae79697b | 1309 | |
e23c0ba3 ZW |
1310 | switch (opt_code) |
1311 | { | |
4a58aab6 | 1312 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 | 1313 | break; |
f4cdc368 | 1314 | |
e23c0ba3 | 1315 | case OPT_D: |
f8f769ea | 1316 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 | 1317 | break; |
e23c0ba3 | 1318 | case OPT_iprefix: |
ae79697b ZW |
1319 | CPP_OPTION (pfile, include_prefix) = arg; |
1320 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 | 1321 | break; |
96302433 | 1322 | |
e23c0ba3 | 1323 | case OPT_A: |
e1e97c4f | 1324 | if (arg[0] == '-') |
0b22d65c | 1325 | { |
e1e97c4f NB |
1326 | /* -A with an argument beginning with '-' acts as |
1327 | #unassert on whatever immediately follows the '-'. | |
1328 | If "-" is the whole argument, we eliminate all | |
1329 | predefined macros and assertions, including those | |
1330 | that were specified earlier on the command line. | |
1331 | That way we can get rid of any that were passed | |
1332 | automatically in from GCC. */ | |
1333 | ||
1334 | if (arg[1] == '\0') | |
0b22d65c | 1335 | { |
29401c30 | 1336 | free_chain (pend->directive_head); |
e33f6253 NB |
1337 | pend->directive_head = NULL; |
1338 | pend->directive_tail = NULL; | |
0b22d65c | 1339 | } |
e1e97c4f | 1340 | else |
e33f6253 | 1341 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1342 | } |
e1e97c4f | 1343 | else |
e33f6253 | 1344 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1345 | break; |
1346 | case OPT_U: | |
e33f6253 | 1347 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1348 | break; |
1349 | case OPT_I: /* Add directory to path for includes. */ | |
1350 | if (!strcmp (arg, "-")) | |
df383483 | 1351 | { |
e23c0ba3 ZW |
1352 | /* -I- means: |
1353 | Use the preceding -I directories for #include "..." | |
1354 | but not #include <...>. | |
1355 | Don't search the directory of the present file | |
1356 | for #include "...". (Note that -I. -I- is not the same as | |
1357 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1358 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1359 | { |
ae79697b ZW |
1360 | pend->quote_head = pend->brack_head; |
1361 | pend->quote_tail = pend->brack_tail; | |
1362 | pend->brack_head = 0; | |
1363 | pend->brack_tail = 0; | |
1364 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1365 | } |
1366 | else | |
1367 | { | |
bdee42b1 | 1368 | cpp_error (pfile, DL_ERROR, "-I- specified twice"); |
e23c0ba3 ZW |
1369 | return argc; |
1370 | } | |
df383483 KH |
1371 | } |
1372 | else | |
e33f6253 | 1373 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1374 | break; |
1375 | case OPT_isystem: | |
1376 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1377 | include directory. */ |
e33f6253 | 1378 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1379 | break; |
1380 | case OPT_include: | |
e23c0ba3 ZW |
1381 | case OPT_imacros: |
1382 | { | |
1383 | struct pending_option *o = (struct pending_option *) | |
1384 | xmalloc (sizeof (struct pending_option)); | |
1385 | o->arg = arg; | |
1386 | o->next = NULL; | |
ae79697b | 1387 | |
d7bc7a98 NB |
1388 | if (opt_code == OPT_include) |
1389 | APPEND (pend, include, o); | |
1390 | else | |
1391 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1392 | } |
1393 | break; | |
1394 | case OPT_iwithprefix: | |
1395 | /* Add directory to end of path for includes, | |
1396 | with the default prefix at the front of its name. */ | |
1397 | /* fall through */ | |
1398 | case OPT_iwithprefixbefore: | |
1399 | /* Add directory to main path for includes, | |
1400 | with the default prefix at the front of its name. */ | |
1401 | { | |
1402 | char *fname; | |
1403 | int len; | |
ae79697b | 1404 | |
e23c0ba3 | 1405 | len = strlen (arg); |
ae79697b ZW |
1406 | |
1407 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1408 | { |
ae79697b ZW |
1409 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1410 | fname = xmalloc (ipl + len + 1); | |
1411 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1412 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1413 | } |
60893f43 | 1414 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1415 | { |
60893f43 ZW |
1416 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1417 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1418 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1419 | } |
60893f43 ZW |
1420 | else |
1421 | fname = xstrdup (arg); | |
ae79697b | 1422 | |
e33f6253 | 1423 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1424 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1425 | } | |
1426 | break; | |
1427 | case OPT_idirafter: | |
1428 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1429 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 | 1430 | break; |
df383483 | 1431 | } |
e23c0ba3 | 1432 | } |
6de1e2a9 | 1433 | return i + 1; |
e23c0ba3 | 1434 | } |
0b22d65c | 1435 | |
6de1e2a9 ZW |
1436 | /* Handle command-line options in (argc, argv). |
1437 | Can be called multiple times, to handle multiple sets of options. | |
1438 | Returns if an unrecognized option is seen. | |
1439 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1440 | int |
1441 | cpp_handle_options (pfile, argc, argv) | |
1442 | cpp_reader *pfile; | |
1443 | int argc; | |
1444 | char **argv; | |
1445 | { | |
1446 | int i; | |
1447 | int strings_processed; | |
e23c0ba3 | 1448 | |
6de1e2a9 ZW |
1449 | for (i = 0; i < argc; i += strings_processed) |
1450 | { | |
09e77dee | 1451 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i); |
6de1e2a9 ZW |
1452 | if (strings_processed == 0) |
1453 | break; | |
1454 | } | |
96302433 | 1455 | |
6de1e2a9 ZW |
1456 | return i; |
1457 | } | |
1458 | ||
f4ff5a69 NB |
1459 | static void |
1460 | post_options (pfile) | |
96302433 NB |
1461 | cpp_reader *pfile; |
1462 | { | |
1463 | /* -Wtraditional is not useful in C++ mode. */ | |
1464 | if (CPP_OPTION (pfile, cplusplus)) | |
1465 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1466 | ||
6d4587f7 | 1467 | /* Permanently disable macro expansion if we are rescanning |
43612ffb | 1468 | preprocessed text. Read preprocesed source in ISO mode. */ |
6d4587f7 | 1469 | if (CPP_OPTION (pfile, preprocessed)) |
43612ffb NB |
1470 | { |
1471 | pfile->state.prevent_expansion = 1; | |
1472 | CPP_OPTION (pfile, traditional) = 0; | |
1473 | } | |
1474 | ||
1475 | /* Traditional CPP does not accurately track column information. */ | |
1476 | if (CPP_OPTION (pfile, traditional)) | |
1477 | CPP_OPTION (pfile, show_column) = 0; | |
7ca3d2b1 | 1478 | } |