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93c80368 | 1 | /* Part of CPP library. (Macro and #define handling.) |
711b8824 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1998, |
ee380365 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
5ffeb913 | 4 | 2006, 2007 Free Software Foundation, Inc. |
711b8824 ZW |
5 | Written by Per Bothner, 1994. |
6 | Based on CCCP program by Paul Rubin, June 1986 | |
7 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify it | |
10 | under the terms of the GNU General Public License as published by the | |
11 | Free Software Foundation; either version 2, or (at your option) any | |
12 | later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
200031d1 | 21 | Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
711b8824 ZW |
22 | |
23 | In other words, you are welcome to use, share and improve this program. | |
24 | You are forbidden to forbid anyone else to use, share and improve | |
25 | what you give them. Help stamp out software-hoarding! */ | |
26 | ||
27 | #include "config.h" | |
28 | #include "system.h" | |
29 | #include "cpplib.h" | |
4f4e53dd | 30 | #include "internal.h" |
711b8824 | 31 | |
93c80368 NB |
32 | typedef struct macro_arg macro_arg; |
33 | struct macro_arg | |
34 | { | |
4ed5bcfb | 35 | const cpp_token **first; /* First token in unexpanded argument. */ |
6d2f8887 | 36 | const cpp_token **expanded; /* Macro-expanded argument. */ |
4ed5bcfb | 37 | const cpp_token *stringified; /* Stringified argument. */ |
93c80368 NB |
38 | unsigned int count; /* # of tokens in argument. */ |
39 | unsigned int expanded_count; /* # of tokens in expanded argument. */ | |
711b8824 ZW |
40 | }; |
41 | ||
93c80368 NB |
42 | /* Macro expansion. */ |
43 | ||
6cf87ca4 ZW |
44 | static int enter_macro_context (cpp_reader *, cpp_hashnode *); |
45 | static int builtin_macro (cpp_reader *, cpp_hashnode *); | |
6cf87ca4 ZW |
46 | static void push_ptoken_context (cpp_reader *, cpp_hashnode *, _cpp_buff *, |
47 | const cpp_token **, unsigned int); | |
48 | static _cpp_buff *collect_args (cpp_reader *, const cpp_hashnode *); | |
49 | static cpp_context *next_context (cpp_reader *); | |
50 | static const cpp_token *padding_token (cpp_reader *, const cpp_token *); | |
51 | static void expand_arg (cpp_reader *, macro_arg *); | |
52 | static const cpp_token *new_string_token (cpp_reader *, uchar *, unsigned int); | |
53 | static const cpp_token *stringify_arg (cpp_reader *, macro_arg *); | |
54 | static void paste_all_tokens (cpp_reader *, const cpp_token *); | |
55 | static bool paste_tokens (cpp_reader *, const cpp_token **, const cpp_token *); | |
56 | static void replace_args (cpp_reader *, cpp_hashnode *, cpp_macro *, | |
57 | macro_arg *); | |
58 | static _cpp_buff *funlike_invocation_p (cpp_reader *, cpp_hashnode *); | |
59 | static bool create_iso_definition (cpp_reader *, cpp_macro *); | |
93c80368 | 60 | |
93c80368 NB |
61 | /* #define directive parsing and handling. */ |
62 | ||
6cf87ca4 ZW |
63 | static cpp_token *alloc_expansion_token (cpp_reader *, cpp_macro *); |
64 | static cpp_token *lex_expansion_token (cpp_reader *, cpp_macro *); | |
65 | static bool warn_of_redefinition (cpp_reader *, const cpp_hashnode *, | |
66 | const cpp_macro *); | |
67 | static bool parse_params (cpp_reader *, cpp_macro *); | |
68 | static void check_trad_stringification (cpp_reader *, const cpp_macro *, | |
69 | const cpp_string *); | |
711b8824 | 70 | |
a69cbaac NB |
71 | /* Emits a warning if NODE is a macro defined in the main file that |
72 | has not been used. */ | |
73 | int | |
6cf87ca4 ZW |
74 | _cpp_warn_if_unused_macro (cpp_reader *pfile, cpp_hashnode *node, |
75 | void *v ATTRIBUTE_UNUSED) | |
a69cbaac NB |
76 | { |
77 | if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN)) | |
78 | { | |
79 | cpp_macro *macro = node->value.macro; | |
80 | ||
81 | if (!macro->used | |
50f59cd7 | 82 | && MAIN_FILE_P (linemap_lookup (pfile->line_table, macro->line))) |
0527bc4e | 83 | cpp_error_with_line (pfile, CPP_DL_WARNING, macro->line, 0, |
a69cbaac NB |
84 | "macro \"%s\" is not used", NODE_NAME (node)); |
85 | } | |
86 | ||
87 | return 1; | |
88 | } | |
89 | ||
4ed5bcfb NB |
90 | /* Allocates and returns a CPP_STRING token, containing TEXT of length |
91 | LEN, after null-terminating it. TEXT must be in permanent storage. */ | |
92 | static const cpp_token * | |
6cf87ca4 | 93 | new_string_token (cpp_reader *pfile, unsigned char *text, unsigned int len) |
93c80368 | 94 | { |
4ed5bcfb | 95 | cpp_token *token = _cpp_temp_token (pfile); |
93c80368 | 96 | |
4ed5bcfb | 97 | text[len] = '\0'; |
93c80368 | 98 | token->type = CPP_STRING; |
4ed5bcfb NB |
99 | token->val.str.len = len; |
100 | token->val.str.text = text; | |
93c80368 | 101 | token->flags = 0; |
4ed5bcfb | 102 | return token; |
93c80368 NB |
103 | } |
104 | ||
93c80368 NB |
105 | static const char * const monthnames[] = |
106 | { | |
107 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
108 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" | |
109 | }; | |
110 | ||
21b11495 ZW |
111 | /* Helper function for builtin_macro. Returns the text generated by |
112 | a builtin macro. */ | |
278c4662 | 113 | const uchar * |
6cf87ca4 | 114 | _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node) |
93c80368 | 115 | { |
12f9df4e | 116 | const struct line_map *map; |
278c4662 NB |
117 | const uchar *result = NULL; |
118 | unsigned int number = 1; | |
644eddaa | 119 | |
93c80368 NB |
120 | switch (node->value.builtin) |
121 | { | |
4ed5bcfb | 122 | default: |
0527bc4e | 123 | cpp_error (pfile, CPP_DL_ICE, "invalid built-in macro \"%s\"", |
ebef4e8c | 124 | NODE_NAME (node)); |
278c4662 | 125 | break; |
4ed5bcfb | 126 | |
be8ac3e2 GZ |
127 | case BT_TIMESTAMP: |
128 | { | |
129 | cpp_buffer *pbuffer = cpp_get_buffer (pfile); | |
130 | if (pbuffer->timestamp == NULL) | |
131 | { | |
132 | /* Initialize timestamp value of the assotiated file. */ | |
133 | struct _cpp_file *file = cpp_get_file (pbuffer); | |
134 | if (file) | |
135 | { | |
136 | /* Generate __TIMESTAMP__ string, that represents | |
137 | the date and time of the last modification | |
138 | of the current source file. The string constant | |
139 | looks like "Sun Sep 16 01:03:52 1973". */ | |
140 | struct tm *tb = NULL; | |
141 | struct stat *st = _cpp_get_file_stat (file); | |
142 | if (st) | |
143 | tb = localtime (&st->st_mtime); | |
144 | if (tb) | |
145 | { | |
146 | char *str = asctime (tb); | |
147 | size_t len = strlen (str); | |
148 | unsigned char *buf = _cpp_unaligned_alloc (pfile, len + 2); | |
149 | buf[0] = '"'; | |
150 | strcpy ((char *) buf + 1, str); | |
151 | buf[len] = '"'; | |
152 | pbuffer->timestamp = buf; | |
153 | } | |
154 | else | |
155 | { | |
156 | cpp_errno (pfile, CPP_DL_WARNING, | |
157 | "could not determine file timestamp"); | |
158 | pbuffer->timestamp = U"\"??? ??? ?? ??:??:?? ????\""; | |
159 | } | |
160 | } | |
161 | } | |
162 | result = pbuffer->timestamp; | |
163 | } | |
164 | break; | |
93c80368 NB |
165 | case BT_FILE: |
166 | case BT_BASE_FILE: | |
711b8824 | 167 | { |
4ed5bcfb | 168 | unsigned int len; |
0bda4760 | 169 | const char *name; |
562a5c27 | 170 | uchar *buf; |
500bee0a | 171 | map = linemap_lookup (pfile->line_table, pfile->line_table->highest_line); |
0bda4760 NB |
172 | |
173 | if (node->value.builtin == BT_BASE_FILE) | |
bb74c963 | 174 | while (! MAIN_FILE_P (map)) |
50f59cd7 | 175 | map = INCLUDED_FROM (pfile->line_table, map); |
0bda4760 | 176 | |
bb74c963 | 177 | name = map->to_file; |
4ed5bcfb | 178 | len = strlen (name); |
651ed942 | 179 | buf = _cpp_unaligned_alloc (pfile, len * 2 + 3); |
278c4662 NB |
180 | result = buf; |
181 | *buf = '"'; | |
182 | buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len); | |
183 | *buf++ = '"'; | |
184 | *buf = '\0'; | |
711b8824 | 185 | } |
644eddaa NB |
186 | break; |
187 | ||
93c80368 | 188 | case BT_INCLUDE_LEVEL: |
d8693c6f NB |
189 | /* The line map depth counts the primary source as level 1, but |
190 | historically __INCLUDE_DEPTH__ has called the primary source | |
191 | level 0. */ | |
50f59cd7 | 192 | number = pfile->line_table->depth - 1; |
644eddaa | 193 | break; |
93c80368 NB |
194 | |
195 | case BT_SPECLINE: | |
500bee0a | 196 | map = &pfile->line_table->maps[pfile->line_table->used-1]; |
93c80368 NB |
197 | /* If __LINE__ is embedded in a macro, it must expand to the |
198 | line of the macro's invocation, not its definition. | |
199 | Otherwise things like assert() will not work properly. */ | |
278c4662 | 200 | if (CPP_OPTION (pfile, traditional)) |
500bee0a | 201 | number = pfile->line_table->highest_line; |
278c4662 | 202 | else |
12f9df4e PB |
203 | number = pfile->cur_token[-1].src_loc; |
204 | number = SOURCE_LINE (map, number); | |
644eddaa | 205 | break; |
93c80368 | 206 | |
5279d739 ZW |
207 | /* __STDC__ has the value 1 under normal circumstances. |
208 | However, if (a) we are in a system header, (b) the option | |
2a1dc0d8 ZW |
209 | stdc_0_in_system_headers is true (set by target config), and |
210 | (c) we are not in strictly conforming mode, then it has the | |
83900997 | 211 | value 0. (b) and (c) are already checked in cpp_init_builtins. */ |
93c80368 | 212 | case BT_STDC: |
83900997 JJ |
213 | if (cpp_in_system_header (pfile)) |
214 | number = 0; | |
215 | else | |
216 | number = 1; | |
644eddaa | 217 | break; |
711b8824 | 218 | |
93c80368 NB |
219 | case BT_DATE: |
220 | case BT_TIME: | |
278c4662 | 221 | if (pfile->date == NULL) |
93c80368 | 222 | { |
4ed5bcfb NB |
223 | /* Allocate __DATE__ and __TIME__ strings from permanent |
224 | storage. We only do this once, and don't generate them | |
225 | at init time, because time() and localtime() are very | |
226 | slow on some systems. */ | |
56da7207 ZW |
227 | time_t tt; |
228 | struct tm *tb = NULL; | |
229 | ||
230 | /* (time_t) -1 is a legitimate value for "number of seconds | |
231 | since the Epoch", so we have to do a little dance to | |
232 | distinguish that from a genuine error. */ | |
233 | errno = 0; | |
234 | tt = time(NULL); | |
235 | if (tt != (time_t)-1 || errno == 0) | |
236 | tb = localtime (&tt); | |
237 | ||
238 | if (tb) | |
239 | { | |
240 | pfile->date = _cpp_unaligned_alloc (pfile, | |
241 | sizeof ("\"Oct 11 1347\"")); | |
242 | sprintf ((char *) pfile->date, "\"%s %2d %4d\"", | |
6cf87ca4 ZW |
243 | monthnames[tb->tm_mon], tb->tm_mday, |
244 | tb->tm_year + 1900); | |
56da7207 ZW |
245 | |
246 | pfile->time = _cpp_unaligned_alloc (pfile, | |
247 | sizeof ("\"12:34:56\"")); | |
248 | sprintf ((char *) pfile->time, "\"%02d:%02d:%02d\"", | |
249 | tb->tm_hour, tb->tm_min, tb->tm_sec); | |
250 | } | |
251 | else | |
252 | { | |
0527bc4e | 253 | cpp_errno (pfile, CPP_DL_WARNING, |
56da7207 ZW |
254 | "could not determine date and time"); |
255 | ||
256 | pfile->date = U"\"??? ?? ????\""; | |
257 | pfile->time = U"\"??:??:??\""; | |
258 | } | |
93c80368 | 259 | } |
93c80368 | 260 | |
644eddaa | 261 | if (node->value.builtin == BT_DATE) |
278c4662 | 262 | result = pfile->date; |
644eddaa | 263 | else |
278c4662 | 264 | result = pfile->time; |
644eddaa | 265 | break; |
a702045a OW |
266 | |
267 | case BT_COUNTER: | |
ccfc4c91 OW |
268 | if (CPP_OPTION (pfile, directives_only) && pfile->state.in_directive) |
269 | cpp_error (pfile, CPP_DL_ERROR, | |
270 | "__COUNTER__ expanded inside directive with -fdirectives-only"); | |
a702045a OW |
271 | number = pfile->counter++; |
272 | break; | |
278c4662 NB |
273 | } |
274 | ||
275 | if (result == NULL) | |
276 | { | |
277 | /* 21 bytes holds all NUL-terminated unsigned 64-bit numbers. */ | |
278 | result = _cpp_unaligned_alloc (pfile, 21); | |
279 | sprintf ((char *) result, "%u", number); | |
280 | } | |
281 | ||
282 | return result; | |
283 | } | |
284 | ||
285 | /* Convert builtin macros like __FILE__ to a token and push it on the | |
21b11495 ZW |
286 | context stack. Also handles _Pragma, for which a new token may not |
287 | be created. Returns 1 if it generates a new token context, 0 to | |
278c4662 NB |
288 | return the token to the caller. */ |
289 | static int | |
6cf87ca4 | 290 | builtin_macro (cpp_reader *pfile, cpp_hashnode *node) |
278c4662 NB |
291 | { |
292 | const uchar *buf; | |
26aea073 NB |
293 | size_t len; |
294 | char *nbuf; | |
644eddaa | 295 | |
278c4662 NB |
296 | if (node->value.builtin == BT_PRAGMA) |
297 | { | |
644eddaa NB |
298 | /* Don't interpret _Pragma within directives. The standard is |
299 | not clear on this, but to me this makes most sense. */ | |
300 | if (pfile->state.in_directive) | |
301 | return 0; | |
302 | ||
5b9a40df | 303 | return _cpp_do__Pragma (pfile); |
93c80368 | 304 | } |
644eddaa | 305 | |
278c4662 | 306 | buf = _cpp_builtin_macro_text (pfile, node); |
26aea073 | 307 | len = ustrlen (buf); |
c3f829c1 | 308 | nbuf = (char *) alloca (len + 1); |
26aea073 NB |
309 | memcpy (nbuf, buf, len); |
310 | nbuf[len]='\n'; | |
278c4662 | 311 | |
40de9f76 | 312 | cpp_push_buffer (pfile, (uchar *) nbuf, len, /* from_stage3 */ true); |
26aea073 | 313 | _cpp_clean_line (pfile); |
278c4662 NB |
314 | |
315 | /* Set pfile->cur_token as required by _cpp_lex_direct. */ | |
316 | pfile->cur_token = _cpp_temp_token (pfile); | |
bc4071dd | 317 | _cpp_push_token_context (pfile, NULL, _cpp_lex_direct (pfile), 1); |
278c4662 | 318 | if (pfile->buffer->cur != pfile->buffer->rlimit) |
0527bc4e | 319 | cpp_error (pfile, CPP_DL_ICE, "invalid built-in macro \"%s\"", |
278c4662 NB |
320 | NODE_NAME (node)); |
321 | _cpp_pop_buffer (pfile); | |
322 | ||
644eddaa | 323 | return 1; |
711b8824 ZW |
324 | } |
325 | ||
d15a58c0 | 326 | /* Copies SRC, of length LEN, to DEST, adding backslashes before all |
651ed942 AP |
327 | backslashes and double quotes. DEST must be of sufficient size. |
328 | Returns a pointer to the end of the string. */ | |
562a5c27 | 329 | uchar * |
6cf87ca4 | 330 | cpp_quote_string (uchar *dest, const uchar *src, unsigned int len) |
93c80368 NB |
331 | { |
332 | while (len--) | |
333 | { | |
562a5c27 | 334 | uchar c = *src++; |
711b8824 | 335 | |
93c80368 NB |
336 | if (c == '\\' || c == '"') |
337 | { | |
338 | *dest++ = '\\'; | |
339 | *dest++ = c; | |
340 | } | |
341 | else | |
651ed942 | 342 | *dest++ = c; |
93c80368 | 343 | } |
711b8824 | 344 | |
93c80368 NB |
345 | return dest; |
346 | } | |
711b8824 | 347 | |
d15a58c0 NB |
348 | /* Convert a token sequence ARG to a single string token according to |
349 | the rules of the ISO C #-operator. */ | |
4ed5bcfb | 350 | static const cpp_token * |
6cf87ca4 | 351 | stringify_arg (cpp_reader *pfile, macro_arg *arg) |
93c80368 | 352 | { |
6338b358 | 353 | unsigned char *dest; |
ece54d54 | 354 | unsigned int i, escape_it, backslash_count = 0; |
4ed5bcfb | 355 | const cpp_token *source = NULL; |
ece54d54 | 356 | size_t len; |
711b8824 | 357 | |
6338b358 NB |
358 | if (BUFF_ROOM (pfile->u_buff) < 3) |
359 | _cpp_extend_buff (pfile, &pfile->u_buff, 3); | |
360 | dest = BUFF_FRONT (pfile->u_buff); | |
361 | *dest++ = '"'; | |
362 | ||
93c80368 NB |
363 | /* Loop, reading in the argument's tokens. */ |
364 | for (i = 0; i < arg->count; i++) | |
365 | { | |
4ed5bcfb | 366 | const cpp_token *token = arg->first[i]; |
4ed5bcfb NB |
367 | |
368 | if (token->type == CPP_PADDING) | |
369 | { | |
370 | if (source == NULL) | |
371 | source = token->val.source; | |
372 | continue; | |
373 | } | |
711b8824 | 374 | |
93c80368 | 375 | escape_it = (token->type == CPP_STRING || token->type == CPP_WSTRING |
cc937581 | 376 | || token->type == CPP_CHAR || token->type == CPP_WCHAR); |
711b8824 | 377 | |
ece54d54 | 378 | /* Room for each char being written in octal, initial space and |
6338b358 | 379 | final quote and NUL. */ |
4ed5bcfb | 380 | len = cpp_token_len (token); |
93c80368 | 381 | if (escape_it) |
93c80368 | 382 | len *= 4; |
6338b358 | 383 | len += 3; |
711b8824 | 384 | |
ece54d54 | 385 | if ((size_t) (BUFF_LIMIT (pfile->u_buff) - dest) < len) |
93c80368 | 386 | { |
ece54d54 | 387 | size_t len_so_far = dest - BUFF_FRONT (pfile->u_buff); |
8c3b2693 | 388 | _cpp_extend_buff (pfile, &pfile->u_buff, len); |
ece54d54 | 389 | dest = BUFF_FRONT (pfile->u_buff) + len_so_far; |
93c80368 | 390 | } |
711b8824 | 391 | |
4ed5bcfb | 392 | /* Leading white space? */ |
6338b358 | 393 | if (dest - 1 != BUFF_FRONT (pfile->u_buff)) |
4ed5bcfb NB |
394 | { |
395 | if (source == NULL) | |
396 | source = token; | |
397 | if (source->flags & PREV_WHITE) | |
398 | *dest++ = ' '; | |
399 | } | |
400 | source = NULL; | |
711b8824 | 401 | |
93c80368 NB |
402 | if (escape_it) |
403 | { | |
ece54d54 NB |
404 | _cpp_buff *buff = _cpp_get_buff (pfile, len); |
405 | unsigned char *buf = BUFF_FRONT (buff); | |
47e20491 | 406 | len = cpp_spell_token (pfile, token, buf, true) - buf; |
dcc229e5 | 407 | dest = cpp_quote_string (dest, buf, len); |
ece54d54 | 408 | _cpp_release_buff (pfile, buff); |
93c80368 NB |
409 | } |
410 | else | |
47e20491 | 411 | dest = cpp_spell_token (pfile, token, dest, true); |
93c80368 | 412 | |
1067694a | 413 | if (token->type == CPP_OTHER && token->val.str.text[0] == '\\') |
93c80368 NB |
414 | backslash_count++; |
415 | else | |
416 | backslash_count = 0; | |
417 | } | |
418 | ||
419 | /* Ignore the final \ of invalid string literals. */ | |
420 | if (backslash_count & 1) | |
421 | { | |
0527bc4e | 422 | cpp_error (pfile, CPP_DL_WARNING, |
ebef4e8c | 423 | "invalid string literal, ignoring final '\\'"); |
ece54d54 | 424 | dest--; |
93c80368 NB |
425 | } |
426 | ||
4ed5bcfb | 427 | /* Commit the memory, including NUL, and return the token. */ |
6338b358 | 428 | *dest++ = '"'; |
ece54d54 NB |
429 | len = dest - BUFF_FRONT (pfile->u_buff); |
430 | BUFF_FRONT (pfile->u_buff) = dest + 1; | |
431 | return new_string_token (pfile, dest - len, len); | |
93c80368 NB |
432 | } |
433 | ||
da7d8304 | 434 | /* Try to paste two tokens. On success, return nonzero. In any |
c9e7a609 NB |
435 | case, PLHS is updated to point to the pasted token, which is |
436 | guaranteed to not have the PASTE_LEFT flag set. */ | |
437 | static bool | |
6cf87ca4 | 438 | paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs) |
d63eefbf | 439 | { |
de000d22 | 440 | unsigned char *buf, *end, *lhsend; |
fca35e1b | 441 | cpp_token *lhs; |
c9e7a609 | 442 | unsigned int len; |
c9e7a609 | 443 | |
fca35e1b | 444 | len = cpp_token_len (*plhs) + cpp_token_len (rhs) + 1; |
c3f829c1 | 445 | buf = (unsigned char *) alloca (len); |
fca35e1b | 446 | end = lhsend = cpp_spell_token (pfile, *plhs, buf, false); |
c9e7a609 NB |
447 | |
448 | /* Avoid comment headers, since they are still processed in stage 3. | |
449 | It is simpler to insert a space here, rather than modifying the | |
450 | lexer to ignore comments in some circumstances. Simply returning | |
451 | false doesn't work, since we want to clear the PASTE_LEFT flag. */ | |
fca35e1b | 452 | if ((*plhs)->type == CPP_DIV && rhs->type != CPP_EQ) |
c9e7a609 | 453 | *end++ = ' '; |
f373b44d TT |
454 | /* In one obscure case we might see padding here. */ |
455 | if (rhs->type != CPP_PADDING) | |
456 | end = cpp_spell_token (pfile, rhs, end, false); | |
26aea073 | 457 | *end = '\n'; |
c9e7a609 | 458 | |
40de9f76 | 459 | cpp_push_buffer (pfile, buf, end - buf, /* from_stage3 */ true); |
26aea073 | 460 | _cpp_clean_line (pfile); |
c9e7a609 NB |
461 | |
462 | /* Set pfile->cur_token as required by _cpp_lex_direct. */ | |
463 | pfile->cur_token = _cpp_temp_token (pfile); | |
fca35e1b | 464 | lhs = _cpp_lex_direct (pfile); |
de000d22 JJ |
465 | if (pfile->buffer->cur != pfile->buffer->rlimit) |
466 | { | |
fca35e1b TT |
467 | source_location saved_loc = lhs->src_loc; |
468 | ||
de000d22 JJ |
469 | _cpp_pop_buffer (pfile); |
470 | _cpp_backup_tokens (pfile, 1); | |
471 | *lhsend = '\0'; | |
472 | ||
fca35e1b TT |
473 | /* We have to remove the PASTE_LEFT flag from the old lhs, but |
474 | we want to keep the new location. */ | |
475 | *lhs = **plhs; | |
476 | *plhs = lhs; | |
477 | lhs->src_loc = saved_loc; | |
478 | lhs->flags &= ~PASTE_LEFT; | |
479 | ||
de000d22 JJ |
480 | /* Mandatory error for all apart from assembler. */ |
481 | if (CPP_OPTION (pfile, lang) != CLK_ASM) | |
482 | cpp_error (pfile, CPP_DL_ERROR, | |
483 | "pasting \"%s\" and \"%s\" does not give a valid preprocessing token", | |
484 | buf, cpp_token_as_text (pfile, rhs)); | |
485 | return false; | |
486 | } | |
c9e7a609 | 487 | |
fca35e1b | 488 | *plhs = lhs; |
de000d22 JJ |
489 | _cpp_pop_buffer (pfile); |
490 | return true; | |
d63eefbf NB |
491 | } |
492 | ||
d15a58c0 NB |
493 | /* Handles an arbitrarily long sequence of ## operators, with initial |
494 | operand LHS. This implementation is left-associative, | |
495 | non-recursive, and finishes a paste before handling succeeding | |
496 | ones. If a paste fails, we back up to the RHS of the failing ## | |
497 | operator before pushing the context containing the result of prior | |
498 | successful pastes, with the effect that the RHS appears in the | |
499 | output stream after the pasted LHS normally. */ | |
93c80368 | 500 | static void |
6cf87ca4 | 501 | paste_all_tokens (cpp_reader *pfile, const cpp_token *lhs) |
93c80368 | 502 | { |
4ed5bcfb NB |
503 | const cpp_token *rhs; |
504 | cpp_context *context = pfile->context; | |
505 | ||
93c80368 NB |
506 | do |
507 | { | |
508 | /* Take the token directly from the current context. We can do | |
509 | this, because we are in the replacement list of either an | |
510 | object-like macro, or a function-like macro with arguments | |
511 | inserted. In either case, the constraints to #define | |
d63eefbf | 512 | guarantee we have at least one more token. */ |
4ed5bcfb | 513 | if (context->direct_p) |
82eda77e | 514 | rhs = FIRST (context).token++; |
4ed5bcfb | 515 | else |
82eda77e | 516 | rhs = *FIRST (context).ptoken++; |
4ed5bcfb NB |
517 | |
518 | if (rhs->type == CPP_PADDING) | |
f373b44d TT |
519 | { |
520 | if (rhs->flags & PASTE_LEFT) | |
521 | abort (); | |
522 | } | |
c9e7a609 | 523 | if (!paste_tokens (pfile, &lhs, rhs)) |
de000d22 | 524 | break; |
93c80368 NB |
525 | } |
526 | while (rhs->flags & PASTE_LEFT); | |
527 | ||
c9e7a609 | 528 | /* Put the resulting token in its own context. */ |
bc4071dd | 529 | _cpp_push_token_context (pfile, NULL, lhs, 1); |
93c80368 NB |
530 | } |
531 | ||
1ce676a0 NB |
532 | /* Returns TRUE if the number of arguments ARGC supplied in an |
533 | invocation of the MACRO referenced by NODE is valid. An empty | |
534 | invocation to a macro with no parameters should pass ARGC as zero. | |
535 | ||
536 | Note that MACRO cannot necessarily be deduced from NODE, in case | |
537 | NODE was redefined whilst collecting arguments. */ | |
538 | bool | |
6cf87ca4 | 539 | _cpp_arguments_ok (cpp_reader *pfile, cpp_macro *macro, const cpp_hashnode *node, unsigned int argc) |
1ce676a0 NB |
540 | { |
541 | if (argc == macro->paramc) | |
542 | return true; | |
543 | ||
544 | if (argc < macro->paramc) | |
545 | { | |
546 | /* As an extension, a rest argument is allowed to not appear in | |
547 | the invocation at all. | |
548 | e.g. #define debug(format, args...) something | |
549 | debug("string"); | |
550 | ||
551 | This is exactly the same as if there had been an empty rest | |
552 | argument - debug("string", ). */ | |
553 | ||
554 | if (argc + 1 == macro->paramc && macro->variadic) | |
555 | { | |
556 | if (CPP_PEDANTIC (pfile) && ! macro->syshdr) | |
0527bc4e | 557 | cpp_error (pfile, CPP_DL_PEDWARN, |
1ce676a0 NB |
558 | "ISO C99 requires rest arguments to be used"); |
559 | return true; | |
560 | } | |
561 | ||
0527bc4e | 562 | cpp_error (pfile, CPP_DL_ERROR, |
1ce676a0 NB |
563 | "macro \"%s\" requires %u arguments, but only %u given", |
564 | NODE_NAME (node), macro->paramc, argc); | |
565 | } | |
566 | else | |
0527bc4e | 567 | cpp_error (pfile, CPP_DL_ERROR, |
1ce676a0 NB |
568 | "macro \"%s\" passed %u arguments, but takes just %u", |
569 | NODE_NAME (node), argc, macro->paramc); | |
570 | ||
571 | return false; | |
572 | } | |
573 | ||
d15a58c0 NB |
574 | /* Reads and returns the arguments to a function-like macro |
575 | invocation. Assumes the opening parenthesis has been processed. | |
576 | If there is an error, emits an appropriate diagnostic and returns | |
577 | NULL. Each argument is terminated by a CPP_EOF token, for the | |
578 | future benefit of expand_arg(). */ | |
b8af0ca5 | 579 | static _cpp_buff * |
6cf87ca4 | 580 | collect_args (cpp_reader *pfile, const cpp_hashnode *node) |
93c80368 | 581 | { |
b8af0ca5 NB |
582 | _cpp_buff *buff, *base_buff; |
583 | cpp_macro *macro; | |
584 | macro_arg *args, *arg; | |
585 | const cpp_token *token; | |
586 | unsigned int argc; | |
b8af0ca5 NB |
587 | |
588 | macro = node->value.macro; | |
589 | if (macro->paramc) | |
590 | argc = macro->paramc; | |
591 | else | |
592 | argc = 1; | |
593 | buff = _cpp_get_buff (pfile, argc * (50 * sizeof (cpp_token *) | |
594 | + sizeof (macro_arg))); | |
595 | base_buff = buff; | |
596 | args = (macro_arg *) buff->base; | |
597 | memset (args, 0, argc * sizeof (macro_arg)); | |
ece54d54 | 598 | buff->cur = (unsigned char *) &args[argc]; |
b8af0ca5 NB |
599 | arg = args, argc = 0; |
600 | ||
601 | /* Collect the tokens making up each argument. We don't yet know | |
602 | how many arguments have been supplied, whether too many or too | |
603 | few. Hence the slightly bizarre usage of "argc" and "arg". */ | |
604 | do | |
93c80368 | 605 | { |
b8af0ca5 NB |
606 | unsigned int paren_depth = 0; |
607 | unsigned int ntokens = 0; | |
93c80368 | 608 | |
b8af0ca5 NB |
609 | argc++; |
610 | arg->first = (const cpp_token **) buff->cur; | |
711b8824 | 611 | |
b8af0ca5 NB |
612 | for (;;) |
613 | { | |
614 | /* Require space for 2 new tokens (including a CPP_EOF). */ | |
ece54d54 | 615 | if ((unsigned char *) &arg->first[ntokens + 2] > buff->limit) |
b8af0ca5 | 616 | { |
8c3b2693 NB |
617 | buff = _cpp_append_extend_buff (pfile, buff, |
618 | 1000 * sizeof (cpp_token *)); | |
b8af0ca5 NB |
619 | arg->first = (const cpp_token **) buff->cur; |
620 | } | |
4ed5bcfb | 621 | |
b8af0ca5 | 622 | token = cpp_get_token (pfile); |
711b8824 | 623 | |
b8af0ca5 NB |
624 | if (token->type == CPP_PADDING) |
625 | { | |
626 | /* Drop leading padding. */ | |
627 | if (ntokens == 0) | |
628 | continue; | |
629 | } | |
630 | else if (token->type == CPP_OPEN_PAREN) | |
631 | paren_depth++; | |
632 | else if (token->type == CPP_CLOSE_PAREN) | |
633 | { | |
634 | if (paren_depth-- == 0) | |
635 | break; | |
636 | } | |
637 | else if (token->type == CPP_COMMA) | |
638 | { | |
639 | /* A comma does not terminate an argument within | |
640 | parentheses or as part of a variable argument. */ | |
641 | if (paren_depth == 0 | |
642 | && ! (macro->variadic && argc == macro->paramc)) | |
643 | break; | |
644 | } | |
645 | else if (token->type == CPP_EOF | |
646 | || (token->type == CPP_HASH && token->flags & BOL)) | |
647 | break; | |
93c80368 | 648 | |
b8af0ca5 NB |
649 | arg->first[ntokens++] = token; |
650 | } | |
93c80368 | 651 | |
b8af0ca5 NB |
652 | /* Drop trailing padding. */ |
653 | while (ntokens > 0 && arg->first[ntokens - 1]->type == CPP_PADDING) | |
654 | ntokens--; | |
93c80368 | 655 | |
b8af0ca5 NB |
656 | arg->count = ntokens; |
657 | arg->first[ntokens] = &pfile->eof; | |
93c80368 | 658 | |
b8af0ca5 NB |
659 | /* Terminate the argument. Excess arguments loop back and |
660 | overwrite the final legitimate argument, before failing. */ | |
661 | if (argc <= macro->paramc) | |
662 | { | |
ece54d54 | 663 | buff->cur = (unsigned char *) &arg->first[ntokens + 1]; |
b8af0ca5 NB |
664 | if (argc != macro->paramc) |
665 | arg++; | |
666 | } | |
93c80368 | 667 | } |
e808ec9c | 668 | while (token->type != CPP_CLOSE_PAREN && token->type != CPP_EOF); |
93c80368 | 669 | |
e808ec9c | 670 | if (token->type == CPP_EOF) |
93c80368 | 671 | { |
ece54d54 NB |
672 | /* We still need the CPP_EOF to end directives, and to end |
673 | pre-expansion of a macro argument. Step back is not | |
674 | unconditional, since we don't want to return a CPP_EOF to our | |
675 | callers at the end of an -include-d file. */ | |
e808ec9c | 676 | if (pfile->context->prev || pfile->state.in_directive) |
b8af0ca5 | 677 | _cpp_backup_tokens (pfile, 1); |
0527bc4e | 678 | cpp_error (pfile, CPP_DL_ERROR, |
ebef4e8c | 679 | "unterminated argument list invoking macro \"%s\"", |
a28c5035 | 680 | NODE_NAME (node)); |
93c80368 | 681 | } |
1ce676a0 | 682 | else |
93c80368 | 683 | { |
1ce676a0 NB |
684 | /* A single empty argument is counted as no argument. */ |
685 | if (argc == 1 && macro->paramc == 0 && args[0].count == 0) | |
686 | argc = 0; | |
687 | if (_cpp_arguments_ok (pfile, macro, node, argc)) | |
58551c23 NB |
688 | { |
689 | /* GCC has special semantics for , ## b where b is a varargs | |
690 | parameter: we remove the comma if b was omitted entirely. | |
691 | If b was merely an empty argument, the comma is retained. | |
692 | If the macro takes just one (varargs) parameter, then we | |
693 | retain the comma only if we are standards conforming. | |
694 | ||
695 | If FIRST is NULL replace_args () swallows the comma. */ | |
696 | if (macro->variadic && (argc < macro->paramc | |
697 | || (argc == 1 && args[0].count == 0 | |
698 | && !CPP_OPTION (pfile, std)))) | |
699 | args[macro->paramc - 1].first = NULL; | |
700 | return base_buff; | |
701 | } | |
93c80368 NB |
702 | } |
703 | ||
1ce676a0 | 704 | /* An error occurred. */ |
b8af0ca5 NB |
705 | _cpp_release_buff (pfile, base_buff); |
706 | return NULL; | |
93c80368 NB |
707 | } |
708 | ||
d6da836d NB |
709 | /* Search for an opening parenthesis to the macro of NODE, in such a |
710 | way that, if none is found, we don't lose the information in any | |
711 | intervening padding tokens. If we find the parenthesis, collect | |
712 | the arguments and return the buffer containing them. */ | |
713 | static _cpp_buff * | |
6cf87ca4 | 714 | funlike_invocation_p (cpp_reader *pfile, cpp_hashnode *node) |
93c80368 | 715 | { |
d6da836d | 716 | const cpp_token *token, *padding = NULL; |
4ed5bcfb | 717 | |
d6da836d | 718 | for (;;) |
bdcbe496 | 719 | { |
d6da836d NB |
720 | token = cpp_get_token (pfile); |
721 | if (token->type != CPP_PADDING) | |
722 | break; | |
723 | if (padding == NULL | |
724 | || (!(padding->flags & PREV_WHITE) && token->val.source == NULL)) | |
725 | padding = token; | |
bdcbe496 | 726 | } |
93c80368 | 727 | |
d6da836d | 728 | if (token->type == CPP_OPEN_PAREN) |
93c80368 | 729 | { |
d6da836d NB |
730 | pfile->state.parsing_args = 2; |
731 | return collect_args (pfile, node); | |
93c80368 NB |
732 | } |
733 | ||
9ac3b1be NB |
734 | /* CPP_EOF can be the end of macro arguments, or the end of the |
735 | file. We mustn't back up over the latter. Ugh. */ | |
736 | if (token->type != CPP_EOF || token == &pfile->eof) | |
737 | { | |
738 | /* Back up. We may have skipped padding, in which case backing | |
739 | up more than one token when expanding macros is in general | |
740 | too difficult. We re-insert it in its own context. */ | |
741 | _cpp_backup_tokens (pfile, 1); | |
742 | if (padding) | |
bc4071dd | 743 | _cpp_push_token_context (pfile, NULL, padding, 1); |
9ac3b1be | 744 | } |
d6da836d NB |
745 | |
746 | return NULL; | |
93c80368 NB |
747 | } |
748 | ||
d15a58c0 NB |
749 | /* Push the context of a macro with hash entry NODE onto the context |
750 | stack. If we can successfully expand the macro, we push a context | |
751 | containing its yet-to-be-rescanned replacement list and return one. | |
752 | Otherwise, we don't push a context and return zero. */ | |
711b8824 | 753 | static int |
6cf87ca4 | 754 | enter_macro_context (cpp_reader *pfile, cpp_hashnode *node) |
711b8824 | 755 | { |
d15a58c0 | 756 | /* The presence of a macro invalidates a file's controlling macro. */ |
644eddaa NB |
757 | pfile->mi_valid = false; |
758 | ||
3620711b NB |
759 | pfile->state.angled_headers = false; |
760 | ||
d15a58c0 | 761 | /* Handle standard macros. */ |
644eddaa | 762 | if (! (node->flags & NODE_BUILTIN)) |
711b8824 | 763 | { |
4ed5bcfb | 764 | cpp_macro *macro = node->value.macro; |
4c2b647d | 765 | |
d6da836d NB |
766 | if (macro->fun_like) |
767 | { | |
768 | _cpp_buff *buff; | |
769 | ||
770 | pfile->state.prevent_expansion++; | |
771 | pfile->keep_tokens++; | |
772 | pfile->state.parsing_args = 1; | |
773 | buff = funlike_invocation_p (pfile, node); | |
774 | pfile->state.parsing_args = 0; | |
775 | pfile->keep_tokens--; | |
776 | pfile->state.prevent_expansion--; | |
777 | ||
778 | if (buff == NULL) | |
779 | { | |
780 | if (CPP_WTRADITIONAL (pfile) && ! node->value.macro->syshdr) | |
0527bc4e | 781 | cpp_error (pfile, CPP_DL_WARNING, |
d6da836d | 782 | "function-like macro \"%s\" must be used with arguments in traditional C", |
ebef4e8c | 783 | NODE_NAME (node)); |
d6da836d NB |
784 | |
785 | return 0; | |
786 | } | |
787 | ||
e808ec9c NB |
788 | if (macro->paramc > 0) |
789 | replace_args (pfile, node, macro, (macro_arg *) buff->base); | |
d6da836d NB |
790 | _cpp_release_buff (pfile, buff); |
791 | } | |
93c80368 | 792 | |
4ed5bcfb | 793 | /* Disable the macro within its expansion. */ |
644eddaa | 794 | node->flags |= NODE_DISABLED; |
93c80368 | 795 | |
a69cbaac NB |
796 | macro->used = 1; |
797 | ||
4ed5bcfb | 798 | if (macro->paramc == 0) |
bc4071dd | 799 | _cpp_push_token_context (pfile, node, macro->exp.tokens, macro->count); |
644eddaa NB |
800 | |
801 | return 1; | |
711b8824 | 802 | } |
644eddaa | 803 | |
d15a58c0 | 804 | /* Handle built-in macros and the _Pragma operator. */ |
644eddaa | 805 | return builtin_macro (pfile, node); |
93c80368 NB |
806 | } |
807 | ||
d15a58c0 NB |
808 | /* Replace the parameters in a function-like macro of NODE with the |
809 | actual ARGS, and place the result in a newly pushed token context. | |
810 | Expand each argument before replacing, unless it is operated upon | |
811 | by the # or ## operators. */ | |
93c80368 | 812 | static void |
6cf87ca4 | 813 | replace_args (cpp_reader *pfile, cpp_hashnode *node, cpp_macro *macro, macro_arg *args) |
93c80368 NB |
814 | { |
815 | unsigned int i, total; | |
816 | const cpp_token *src, *limit; | |
4ed5bcfb | 817 | const cpp_token **dest, **first; |
93c80368 | 818 | macro_arg *arg; |
1e013d2e | 819 | _cpp_buff *buff; |
93c80368 | 820 | |
93c80368 | 821 | /* First, fully macro-expand arguments, calculating the number of |
1e013d2e NB |
822 | tokens in the final expansion as we go. The ordering of the if |
823 | statements below is subtle; we must handle stringification before | |
824 | pasting. */ | |
4ed5bcfb | 825 | total = macro->count; |
601328bb | 826 | limit = macro->exp.tokens + macro->count; |
4ed5bcfb | 827 | |
601328bb | 828 | for (src = macro->exp.tokens; src < limit; src++) |
93c80368 NB |
829 | if (src->type == CPP_MACRO_ARG) |
830 | { | |
4ed5bcfb NB |
831 | /* Leading and trailing padding tokens. */ |
832 | total += 2; | |
833 | ||
93c80368 NB |
834 | /* We have an argument. If it is not being stringified or |
835 | pasted it is macro-replaced before insertion. */ | |
6c53ebff | 836 | arg = &args[src->val.arg_no - 1]; |
4c2b647d | 837 | |
93c80368 NB |
838 | if (src->flags & STRINGIFY_ARG) |
839 | { | |
840 | if (!arg->stringified) | |
4ed5bcfb | 841 | arg->stringified = stringify_arg (pfile, arg); |
93c80368 NB |
842 | } |
843 | else if ((src->flags & PASTE_LEFT) | |
601328bb | 844 | || (src > macro->exp.tokens && (src[-1].flags & PASTE_LEFT))) |
93c80368 NB |
845 | total += arg->count - 1; |
846 | else | |
847 | { | |
848 | if (!arg->expanded) | |
4ed5bcfb | 849 | expand_arg (pfile, arg); |
93c80368 NB |
850 | total += arg->expanded_count - 1; |
851 | } | |
852 | } | |
853 | ||
4ed5bcfb NB |
854 | /* Now allocate space for the expansion, copy the tokens and replace |
855 | the arguments. */ | |
1e013d2e NB |
856 | buff = _cpp_get_buff (pfile, total * sizeof (cpp_token *)); |
857 | first = (const cpp_token **) buff->base; | |
4ed5bcfb | 858 | dest = first; |
93c80368 | 859 | |
601328bb | 860 | for (src = macro->exp.tokens; src < limit; src++) |
4ed5bcfb NB |
861 | { |
862 | unsigned int count; | |
863 | const cpp_token **from, **paste_flag; | |
93c80368 | 864 | |
4ed5bcfb NB |
865 | if (src->type != CPP_MACRO_ARG) |
866 | { | |
867 | *dest++ = src; | |
868 | continue; | |
869 | } | |
93c80368 | 870 | |
4ed5bcfb NB |
871 | paste_flag = 0; |
872 | arg = &args[src->val.arg_no - 1]; | |
873 | if (src->flags & STRINGIFY_ARG) | |
874 | count = 1, from = &arg->stringified; | |
875 | else if (src->flags & PASTE_LEFT) | |
876 | count = arg->count, from = arg->first; | |
601328bb | 877 | else if (src != macro->exp.tokens && (src[-1].flags & PASTE_LEFT)) |
4ed5bcfb NB |
878 | { |
879 | count = arg->count, from = arg->first; | |
880 | if (dest != first) | |
881 | { | |
4ed5bcfb NB |
882 | if (dest[-1]->type == CPP_COMMA |
883 | && macro->variadic | |
884 | && src->val.arg_no == macro->paramc) | |
885 | { | |
58551c23 NB |
886 | /* Swallow a pasted comma if from == NULL, otherwise |
887 | drop the paste flag. */ | |
888 | if (from == NULL) | |
4ed5bcfb NB |
889 | dest--; |
890 | else | |
891 | paste_flag = dest - 1; | |
892 | } | |
893 | /* Remove the paste flag if the RHS is a placemarker. */ | |
894 | else if (count == 0) | |
895 | paste_flag = dest - 1; | |
896 | } | |
897 | } | |
898 | else | |
899 | count = arg->expanded_count, from = arg->expanded; | |
4c2b647d | 900 | |
4ed5bcfb | 901 | /* Padding on the left of an argument (unless RHS of ##). */ |
a8d0ddaf | 902 | if ((!pfile->state.in_directive || pfile->state.directive_wants_padding) |
601328bb | 903 | && src != macro->exp.tokens && !(src[-1].flags & PASTE_LEFT)) |
4ed5bcfb | 904 | *dest++ = padding_token (pfile, src); |
93c80368 | 905 | |
4ed5bcfb NB |
906 | if (count) |
907 | { | |
908 | memcpy (dest, from, count * sizeof (cpp_token *)); | |
909 | dest += count; | |
93c80368 | 910 | |
4ed5bcfb NB |
911 | /* With a non-empty argument on the LHS of ##, the last |
912 | token should be flagged PASTE_LEFT. */ | |
913 | if (src->flags & PASTE_LEFT) | |
914 | paste_flag = dest - 1; | |
915 | } | |
26ec42ee | 916 | |
4ed5bcfb NB |
917 | /* Avoid paste on RHS (even case count == 0). */ |
918 | if (!pfile->state.in_directive && !(src->flags & PASTE_LEFT)) | |
919 | *dest++ = &pfile->avoid_paste; | |
93c80368 | 920 | |
4ed5bcfb NB |
921 | /* Add a new paste flag, or remove an unwanted one. */ |
922 | if (paste_flag) | |
923 | { | |
924 | cpp_token *token = _cpp_temp_token (pfile); | |
925 | token->type = (*paste_flag)->type; | |
73096711 | 926 | token->val = (*paste_flag)->val; |
4ed5bcfb NB |
927 | if (src->flags & PASTE_LEFT) |
928 | token->flags = (*paste_flag)->flags | PASTE_LEFT; | |
929 | else | |
930 | token->flags = (*paste_flag)->flags & ~PASTE_LEFT; | |
931 | *paste_flag = token; | |
932 | } | |
933 | } | |
4c2b647d | 934 | |
93c80368 NB |
935 | /* Free the expanded arguments. */ |
936 | for (i = 0; i < macro->paramc; i++) | |
4ed5bcfb NB |
937 | if (args[i].expanded) |
938 | free (args[i].expanded); | |
939 | ||
644eddaa | 940 | push_ptoken_context (pfile, node, buff, first, dest - first); |
4ed5bcfb NB |
941 | } |
942 | ||
943 | /* Return a special padding token, with padding inherited from SOURCE. */ | |
944 | static const cpp_token * | |
6cf87ca4 | 945 | padding_token (cpp_reader *pfile, const cpp_token *source) |
4ed5bcfb NB |
946 | { |
947 | cpp_token *result = _cpp_temp_token (pfile); | |
948 | ||
949 | result->type = CPP_PADDING; | |
be0f1e54 PB |
950 | |
951 | /* Data in GCed data structures cannot be made const so far, so we | |
952 | need a cast here. */ | |
953 | result->val.source = (cpp_token *) source; | |
4ed5bcfb NB |
954 | result->flags = 0; |
955 | return result; | |
956 | } | |
957 | ||
d15a58c0 NB |
958 | /* Get a new uninitialized context. Create a new one if we cannot |
959 | re-use an old one. */ | |
4ed5bcfb | 960 | static cpp_context * |
6cf87ca4 | 961 | next_context (cpp_reader *pfile) |
4ed5bcfb NB |
962 | { |
963 | cpp_context *result = pfile->context->next; | |
964 | ||
965 | if (result == 0) | |
711b8824 | 966 | { |
72bb2c39 | 967 | result = XNEW (cpp_context); |
4ed5bcfb NB |
968 | result->prev = pfile->context; |
969 | result->next = 0; | |
970 | pfile->context->next = result; | |
93c80368 | 971 | } |
4ed5bcfb NB |
972 | |
973 | pfile->context = result; | |
974 | return result; | |
93c80368 NB |
975 | } |
976 | ||
4ed5bcfb NB |
977 | /* Push a list of pointers to tokens. */ |
978 | static void | |
6cf87ca4 ZW |
979 | push_ptoken_context (cpp_reader *pfile, cpp_hashnode *macro, _cpp_buff *buff, |
980 | const cpp_token **first, unsigned int count) | |
93c80368 NB |
981 | { |
982 | cpp_context *context = next_context (pfile); | |
93c80368 | 983 | |
4ed5bcfb NB |
984 | context->direct_p = false; |
985 | context->macro = macro; | |
1e013d2e | 986 | context->buff = buff; |
82eda77e NB |
987 | FIRST (context).ptoken = first; |
988 | LAST (context).ptoken = first + count; | |
4ed5bcfb NB |
989 | } |
990 | ||
991 | /* Push a list of tokens. */ | |
bc4071dd RH |
992 | void |
993 | _cpp_push_token_context (cpp_reader *pfile, cpp_hashnode *macro, | |
994 | const cpp_token *first, unsigned int count) | |
4ed5bcfb NB |
995 | { |
996 | cpp_context *context = next_context (pfile); | |
997 | ||
998 | context->direct_p = true; | |
999 | context->macro = macro; | |
1e013d2e | 1000 | context->buff = NULL; |
82eda77e NB |
1001 | FIRST (context).token = first; |
1002 | LAST (context).token = first + count; | |
93c80368 NB |
1003 | } |
1004 | ||
cbc69f84 NB |
1005 | /* Push a traditional macro's replacement text. */ |
1006 | void | |
6cf87ca4 ZW |
1007 | _cpp_push_text_context (cpp_reader *pfile, cpp_hashnode *macro, |
1008 | const uchar *start, size_t len) | |
cbc69f84 NB |
1009 | { |
1010 | cpp_context *context = next_context (pfile); | |
1011 | ||
1012 | context->direct_p = true; | |
1013 | context->macro = macro; | |
1014 | context->buff = NULL; | |
1015 | CUR (context) = start; | |
1ce676a0 | 1016 | RLIMIT (context) = start + len; |
974c43f1 | 1017 | macro->flags |= NODE_DISABLED; |
cbc69f84 NB |
1018 | } |
1019 | ||
d15a58c0 NB |
1020 | /* Expand an argument ARG before replacing parameters in a |
1021 | function-like macro. This works by pushing a context with the | |
1022 | argument's tokens, and then expanding that into a temporary buffer | |
1023 | as if it were a normal part of the token stream. collect_args() | |
1024 | has terminated the argument's tokens with a CPP_EOF so that we know | |
1025 | when we have fully expanded the argument. */ | |
93c80368 | 1026 | static void |
6cf87ca4 | 1027 | expand_arg (cpp_reader *pfile, macro_arg *arg) |
93c80368 | 1028 | { |
4ed5bcfb | 1029 | unsigned int capacity; |
56941bf2 | 1030 | bool saved_warn_trad; |
4ed5bcfb | 1031 | |
4ed5bcfb NB |
1032 | if (arg->count == 0) |
1033 | return; | |
93c80368 | 1034 | |
56941bf2 NB |
1035 | /* Don't warn about funlike macros when pre-expanding. */ |
1036 | saved_warn_trad = CPP_WTRADITIONAL (pfile); | |
1037 | CPP_WTRADITIONAL (pfile) = 0; | |
1038 | ||
93c80368 | 1039 | /* Loop, reading in the arguments. */ |
4ed5bcfb | 1040 | capacity = 256; |
c3f829c1 | 1041 | arg->expanded = XNEWVEC (const cpp_token *, capacity); |
93c80368 | 1042 | |
1e013d2e | 1043 | push_ptoken_context (pfile, NULL, NULL, arg->first, arg->count + 1); |
4ed5bcfb | 1044 | for (;;) |
93c80368 | 1045 | { |
4ed5bcfb NB |
1046 | const cpp_token *token; |
1047 | ||
1048 | if (arg->expanded_count + 1 >= capacity) | |
711b8824 | 1049 | { |
93c80368 | 1050 | capacity *= 2; |
c3f829c1 GDR |
1051 | arg->expanded = XRESIZEVEC (const cpp_token *, arg->expanded, |
1052 | capacity); | |
93c80368 | 1053 | } |
93c80368 | 1054 | |
4ed5bcfb | 1055 | token = cpp_get_token (pfile); |
93c80368 | 1056 | |
4ed5bcfb NB |
1057 | if (token->type == CPP_EOF) |
1058 | break; | |
1059 | ||
1060 | arg->expanded[arg->expanded_count++] = token; | |
1061 | } | |
1062 | ||
1e013d2e | 1063 | _cpp_pop_context (pfile); |
56941bf2 NB |
1064 | |
1065 | CPP_WTRADITIONAL (pfile) = saved_warn_trad; | |
93c80368 NB |
1066 | } |
1067 | ||
d15a58c0 NB |
1068 | /* Pop the current context off the stack, re-enabling the macro if the |
1069 | context represented a macro's replacement list. The context | |
1070 | structure is not freed so that we can re-use it later. */ | |
93c80368 | 1071 | void |
6cf87ca4 | 1072 | _cpp_pop_context (cpp_reader *pfile) |
93c80368 | 1073 | { |
1e013d2e NB |
1074 | cpp_context *context = pfile->context; |
1075 | ||
1e013d2e | 1076 | if (context->macro) |
644eddaa | 1077 | context->macro->flags &= ~NODE_DISABLED; |
1e013d2e NB |
1078 | |
1079 | if (context->buff) | |
1080 | _cpp_release_buff (pfile, context->buff); | |
93c80368 | 1081 | |
1e013d2e | 1082 | pfile->context = context->prev; |
93c80368 NB |
1083 | } |
1084 | ||
48c4721e | 1085 | /* External routine to get a token. Also used nearly everywhere |
7f2f1a66 | 1086 | internally, except for places where we know we can safely call |
48c4721e | 1087 | _cpp_lex_token directly, such as lexing a directive name. |
7f2f1a66 NB |
1088 | |
1089 | Macro expansions and directives are transparently handled, | |
1090 | including entering included files. Thus tokens are post-macro | |
1091 | expansion, and after any intervening directives. External callers | |
1092 | see CPP_EOF only at EOF. Internal callers also see it when meeting | |
1093 | a directive inside a macro call, when at the end of a directive and | |
1094 | state.in_directive is still 1, and at the end of argument | |
1095 | pre-expansion. */ | |
4ed5bcfb | 1096 | const cpp_token * |
6cf87ca4 | 1097 | cpp_get_token (cpp_reader *pfile) |
93c80368 | 1098 | { |
4ed5bcfb | 1099 | const cpp_token *result; |
5ffeb913 TT |
1100 | bool can_set = pfile->set_invocation_location; |
1101 | pfile->set_invocation_location = false; | |
4ed5bcfb | 1102 | |
29b10746 | 1103 | for (;;) |
93c80368 | 1104 | { |
4ed5bcfb | 1105 | cpp_hashnode *node; |
93c80368 NB |
1106 | cpp_context *context = pfile->context; |
1107 | ||
93c80368 | 1108 | /* Context->prev == 0 <=> base context. */ |
bdcbe496 | 1109 | if (!context->prev) |
4ed5bcfb | 1110 | result = _cpp_lex_token (pfile); |
82eda77e | 1111 | else if (FIRST (context).token != LAST (context).token) |
29b10746 | 1112 | { |
4ed5bcfb | 1113 | if (context->direct_p) |
82eda77e | 1114 | result = FIRST (context).token++; |
4ed5bcfb | 1115 | else |
82eda77e | 1116 | result = *FIRST (context).ptoken++; |
4ed5bcfb NB |
1117 | |
1118 | if (result->flags & PASTE_LEFT) | |
ec1a23e6 | 1119 | { |
4ed5bcfb NB |
1120 | paste_all_tokens (pfile, result); |
1121 | if (pfile->state.in_directive) | |
1122 | continue; | |
1123 | return padding_token (pfile, result); | |
ec1a23e6 | 1124 | } |
29b10746 | 1125 | } |
93c80368 NB |
1126 | else |
1127 | { | |
bdcbe496 | 1128 | _cpp_pop_context (pfile); |
4ed5bcfb NB |
1129 | if (pfile->state.in_directive) |
1130 | continue; | |
1131 | return &pfile->avoid_paste; | |
93c80368 | 1132 | } |
93c80368 | 1133 | |
477cdac7 JT |
1134 | if (pfile->state.in_directive && result->type == CPP_COMMENT) |
1135 | continue; | |
1136 | ||
4ed5bcfb | 1137 | if (result->type != CPP_NAME) |
93c80368 NB |
1138 | break; |
1139 | ||
4ed5bcfb NB |
1140 | node = result->val.node; |
1141 | ||
644eddaa NB |
1142 | if (node->type != NT_MACRO || (result->flags & NO_EXPAND)) |
1143 | break; | |
df383483 | 1144 | |
644eddaa | 1145 | if (!(node->flags & NODE_DISABLED)) |
93c80368 | 1146 | { |
5ffeb913 TT |
1147 | /* If not in a macro context, and we're going to start an |
1148 | expansion, record the location. */ | |
1149 | if (can_set && !context->macro) | |
1150 | pfile->invocation_location = result->src_loc; | |
644eddaa NB |
1151 | if (!pfile->state.prevent_expansion |
1152 | && enter_macro_context (pfile, node)) | |
bd969772 | 1153 | { |
4ed5bcfb NB |
1154 | if (pfile->state.in_directive) |
1155 | continue; | |
1156 | return padding_token (pfile, result); | |
bd969772 | 1157 | } |
93c80368 | 1158 | } |
644eddaa NB |
1159 | else |
1160 | { | |
d15a58c0 NB |
1161 | /* Flag this token as always unexpandable. FIXME: move this |
1162 | to collect_args()?. */ | |
644eddaa NB |
1163 | cpp_token *t = _cpp_temp_token (pfile); |
1164 | t->type = result->type; | |
1165 | t->flags = result->flags | NO_EXPAND; | |
73096711 | 1166 | t->val = result->val; |
644eddaa NB |
1167 | result = t; |
1168 | } | |
a5c3cccd | 1169 | |
644eddaa | 1170 | break; |
93c80368 | 1171 | } |
4ed5bcfb NB |
1172 | |
1173 | return result; | |
93c80368 NB |
1174 | } |
1175 | ||
5ffeb913 TT |
1176 | /* Like cpp_get_token, but also returns a location separate from the |
1177 | one provided by the returned token. LOC is an out parameter; *LOC | |
1178 | is set to the location "as expected by the user". This matters | |
1179 | when a token results from macro expansion -- the token's location | |
1180 | will indicate where the macro is defined, but *LOC will be the | |
1181 | location of the start of the expansion. */ | |
1182 | const cpp_token * | |
1183 | cpp_get_token_with_location (cpp_reader *pfile, source_location *loc) | |
1184 | { | |
1185 | const cpp_token *result; | |
1186 | ||
1187 | pfile->set_invocation_location = true; | |
1188 | result = cpp_get_token (pfile); | |
1189 | if (pfile->context->macro) | |
1190 | *loc = pfile->invocation_location; | |
1191 | else | |
1192 | *loc = result->src_loc; | |
1193 | ||
1194 | return result; | |
1195 | } | |
1196 | ||
7065e130 NB |
1197 | /* Returns true if we're expanding an object-like macro that was |
1198 | defined in a system header. Just checks the macro at the top of | |
1199 | the stack. Used for diagnostic suppression. */ | |
1200 | int | |
6cf87ca4 | 1201 | cpp_sys_macro_p (cpp_reader *pfile) |
7065e130 | 1202 | { |
644eddaa | 1203 | cpp_hashnode *node = pfile->context->macro; |
7065e130 | 1204 | |
644eddaa | 1205 | return node && node->value.macro && node->value.macro->syshdr; |
7065e130 NB |
1206 | } |
1207 | ||
af0d16cd NB |
1208 | /* Read each token in, until end of the current file. Directives are |
1209 | transparently processed. */ | |
93c80368 | 1210 | void |
6cf87ca4 | 1211 | cpp_scan_nooutput (cpp_reader *pfile) |
93c80368 | 1212 | { |
22234f56 PB |
1213 | /* Request a CPP_EOF token at the end of this file, rather than |
1214 | transparently continuing with the including file. */ | |
1215 | pfile->buffer->return_at_eof = true; | |
1216 | ||
c6e83800 ZW |
1217 | pfile->state.discarding_output++; |
1218 | pfile->state.prevent_expansion++; | |
1219 | ||
590e1987 NB |
1220 | if (CPP_OPTION (pfile, traditional)) |
1221 | while (_cpp_read_logical_line_trad (pfile)) | |
1222 | ; | |
1223 | else | |
1224 | while (cpp_get_token (pfile)->type != CPP_EOF) | |
1225 | ; | |
c6e83800 ZW |
1226 | |
1227 | pfile->state.discarding_output--; | |
1228 | pfile->state.prevent_expansion--; | |
93c80368 NB |
1229 | } |
1230 | ||
1c90c6f9 | 1231 | /* Step back one (or more) tokens. Can only step back more than 1 if |
bdcbe496 | 1232 | they are from the lexer, and not from macro expansion. */ |
b528a07e | 1233 | void |
6cf87ca4 | 1234 | _cpp_backup_tokens (cpp_reader *pfile, unsigned int count) |
93c80368 | 1235 | { |
bdcbe496 | 1236 | if (pfile->context->prev == NULL) |
93c80368 | 1237 | { |
bdcbe496 NB |
1238 | pfile->lookaheads += count; |
1239 | while (count--) | |
1240 | { | |
3293c3e3 NB |
1241 | pfile->cur_token--; |
1242 | if (pfile->cur_token == pfile->cur_run->base | |
1243 | /* Possible with -fpreprocessed and no leading #line. */ | |
1244 | && pfile->cur_run->prev != NULL) | |
bdcbe496 | 1245 | { |
bdcbe496 NB |
1246 | pfile->cur_run = pfile->cur_run->prev; |
1247 | pfile->cur_token = pfile->cur_run->limit; | |
1248 | } | |
1249 | } | |
93c80368 | 1250 | } |
bdcbe496 | 1251 | else |
93c80368 | 1252 | { |
bdcbe496 NB |
1253 | if (count != 1) |
1254 | abort (); | |
4ed5bcfb | 1255 | if (pfile->context->direct_p) |
82eda77e | 1256 | FIRST (pfile->context).token--; |
4ed5bcfb | 1257 | else |
82eda77e | 1258 | FIRST (pfile->context).ptoken--; |
93c80368 NB |
1259 | } |
1260 | } | |
711b8824 | 1261 | |
93c80368 NB |
1262 | /* #define directive parsing and handling. */ |
1263 | ||
da7d8304 | 1264 | /* Returns nonzero if a macro redefinition warning is required. */ |
cbc69f84 | 1265 | static bool |
6cf87ca4 ZW |
1266 | warn_of_redefinition (cpp_reader *pfile, const cpp_hashnode *node, |
1267 | const cpp_macro *macro2) | |
93c80368 NB |
1268 | { |
1269 | const cpp_macro *macro1; | |
1270 | unsigned int i; | |
1271 | ||
618cdda7 NB |
1272 | /* Some redefinitions need to be warned about regardless. */ |
1273 | if (node->flags & NODE_WARN) | |
cbc69f84 | 1274 | return true; |
93c80368 | 1275 | |
618cdda7 | 1276 | /* Redefinition of a macro is allowed if and only if the old and new |
ec5c56db | 1277 | definitions are the same. (6.10.3 paragraph 2). */ |
93c80368 NB |
1278 | macro1 = node->value.macro; |
1279 | ||
6618c5d4 NB |
1280 | /* Don't check count here as it can be different in valid |
1281 | traditional redefinitions with just whitespace differences. */ | |
1282 | if (macro1->paramc != macro2->paramc | |
93c80368 | 1283 | || macro1->fun_like != macro2->fun_like |
28e0f040 | 1284 | || macro1->variadic != macro2->variadic) |
cbc69f84 | 1285 | return true; |
93c80368 NB |
1286 | |
1287 | /* Check parameter spellings. */ | |
1288 | for (i = 0; i < macro1->paramc; i++) | |
1289 | if (macro1->params[i] != macro2->params[i]) | |
cbc69f84 | 1290 | return true; |
93c80368 | 1291 | |
cbc69f84 NB |
1292 | /* Check the replacement text or tokens. */ |
1293 | if (CPP_OPTION (pfile, traditional)) | |
6618c5d4 | 1294 | return _cpp_expansions_different_trad (macro1, macro2); |
cbc69f84 | 1295 | |
a7f36da3 DD |
1296 | if (macro1->count != macro2->count) |
1297 | return true; | |
1298 | ||
1299 | for (i = 0; i < macro1->count; i++) | |
1300 | if (!_cpp_equiv_tokens (¯o1->exp.tokens[i], ¯o2->exp.tokens[i])) | |
1301 | return true; | |
cbc69f84 NB |
1302 | |
1303 | return false; | |
93c80368 NB |
1304 | } |
1305 | ||
1306 | /* Free the definition of hashnode H. */ | |
711b8824 | 1307 | void |
6cf87ca4 | 1308 | _cpp_free_definition (cpp_hashnode *h) |
711b8824 | 1309 | { |
93c80368 NB |
1310 | /* Macros and assertions no longer have anything to free. */ |
1311 | h->type = NT_VOID; | |
1312 | /* Clear builtin flag in case of redefinition. */ | |
644eddaa | 1313 | h->flags &= ~(NODE_BUILTIN | NODE_DISABLED); |
93c80368 NB |
1314 | } |
1315 | ||
14baae01 | 1316 | /* Save parameter NODE to the parameter list of macro MACRO. Returns |
da7d8304 | 1317 | zero on success, nonzero if the parameter is a duplicate. */ |
c70f6ed3 | 1318 | bool |
6cf87ca4 | 1319 | _cpp_save_parameter (cpp_reader *pfile, cpp_macro *macro, cpp_hashnode *node) |
93c80368 | 1320 | { |
4977bab6 | 1321 | unsigned int len; |
93c80368 | 1322 | /* Constraint 6.10.3.6 - duplicate parameter names. */ |
4977bab6 | 1323 | if (node->flags & NODE_MACRO_ARG) |
709e9e50 | 1324 | { |
0527bc4e | 1325 | cpp_error (pfile, CPP_DL_ERROR, "duplicate macro parameter \"%s\"", |
ebef4e8c | 1326 | NODE_NAME (node)); |
23ff0223 | 1327 | return true; |
93c80368 | 1328 | } |
709e9e50 | 1329 | |
8c3b2693 NB |
1330 | if (BUFF_ROOM (pfile->a_buff) |
1331 | < (macro->paramc + 1) * sizeof (cpp_hashnode *)) | |
1332 | _cpp_extend_buff (pfile, &pfile->a_buff, sizeof (cpp_hashnode *)); | |
709e9e50 | 1333 | |
8c3b2693 | 1334 | ((cpp_hashnode **) BUFF_FRONT (pfile->a_buff))[macro->paramc++] = node; |
4977bab6 ZW |
1335 | node->flags |= NODE_MACRO_ARG; |
1336 | len = macro->paramc * sizeof (union _cpp_hashnode_value); | |
1337 | if (len > pfile->macro_buffer_len) | |
1338 | { | |
c3f829c1 GDR |
1339 | pfile->macro_buffer = XRESIZEVEC (unsigned char, pfile->macro_buffer, |
1340 | len); | |
4977bab6 ZW |
1341 | pfile->macro_buffer_len = len; |
1342 | } | |
1343 | ((union _cpp_hashnode_value *) pfile->macro_buffer)[macro->paramc - 1] | |
1344 | = node->value; | |
1345 | ||
1346 | node->value.arg_index = macro->paramc; | |
23ff0223 | 1347 | return false; |
711b8824 ZW |
1348 | } |
1349 | ||
23ff0223 NB |
1350 | /* Check the syntax of the parameters in a MACRO definition. Returns |
1351 | false if an error occurs. */ | |
1352 | static bool | |
6cf87ca4 | 1353 | parse_params (cpp_reader *pfile, cpp_macro *macro) |
711b8824 | 1354 | { |
93c80368 | 1355 | unsigned int prev_ident = 0; |
711b8824 | 1356 | |
93c80368 | 1357 | for (;;) |
711b8824 | 1358 | { |
345894b4 | 1359 | const cpp_token *token = _cpp_lex_token (pfile); |
711b8824 | 1360 | |
345894b4 | 1361 | switch (token->type) |
711b8824 | 1362 | { |
93c80368 | 1363 | default: |
477cdac7 JT |
1364 | /* Allow/ignore comments in parameter lists if we are |
1365 | preserving comments in macro expansions. */ | |
1366 | if (token->type == CPP_COMMENT | |
1367 | && ! CPP_OPTION (pfile, discard_comments_in_macro_exp)) | |
1368 | continue; | |
1369 | ||
0527bc4e | 1370 | cpp_error (pfile, CPP_DL_ERROR, |
ebef4e8c | 1371 | "\"%s\" may not appear in macro parameter list", |
345894b4 | 1372 | cpp_token_as_text (pfile, token)); |
23ff0223 | 1373 | return false; |
93c80368 | 1374 | |
711b8824 | 1375 | case CPP_NAME: |
93c80368 NB |
1376 | if (prev_ident) |
1377 | { | |
0527bc4e | 1378 | cpp_error (pfile, CPP_DL_ERROR, |
ebef4e8c | 1379 | "macro parameters must be comma-separated"); |
23ff0223 | 1380 | return false; |
93c80368 NB |
1381 | } |
1382 | prev_ident = 1; | |
1383 | ||
c70f6ed3 | 1384 | if (_cpp_save_parameter (pfile, macro, token->val.node)) |
23ff0223 | 1385 | return false; |
93c80368 | 1386 | continue; |
711b8824 | 1387 | |
93c80368 NB |
1388 | case CPP_CLOSE_PAREN: |
1389 | if (prev_ident || macro->paramc == 0) | |
23ff0223 | 1390 | return true; |
711b8824 | 1391 | |
93c80368 NB |
1392 | /* Fall through to pick up the error. */ |
1393 | case CPP_COMMA: | |
1394 | if (!prev_ident) | |
1395 | { | |
0527bc4e | 1396 | cpp_error (pfile, CPP_DL_ERROR, "parameter name missing"); |
23ff0223 | 1397 | return false; |
93c80368 NB |
1398 | } |
1399 | prev_ident = 0; | |
711b8824 ZW |
1400 | continue; |
1401 | ||
93c80368 | 1402 | case CPP_ELLIPSIS: |
28e0f040 | 1403 | macro->variadic = 1; |
93c80368 NB |
1404 | if (!prev_ident) |
1405 | { | |
c70f6ed3 NB |
1406 | _cpp_save_parameter (pfile, macro, |
1407 | pfile->spec_nodes.n__VA_ARGS__); | |
93c80368 | 1408 | pfile->state.va_args_ok = 1; |
e5b79219 RH |
1409 | if (! CPP_OPTION (pfile, c99) |
1410 | && CPP_OPTION (pfile, pedantic) | |
1411 | && CPP_OPTION (pfile, warn_variadic_macros)) | |
0527bc4e | 1412 | cpp_error (pfile, CPP_DL_PEDWARN, |
ebef4e8c | 1413 | "anonymous variadic macros were introduced in C99"); |
93c80368 | 1414 | } |
e5b79219 RH |
1415 | else if (CPP_OPTION (pfile, pedantic) |
1416 | && CPP_OPTION (pfile, warn_variadic_macros)) | |
0527bc4e | 1417 | cpp_error (pfile, CPP_DL_PEDWARN, |
ebef4e8c | 1418 | "ISO C does not permit named variadic macros"); |
711b8824 | 1419 | |
93c80368 | 1420 | /* We're at the end, and just expect a closing parenthesis. */ |
345894b4 NB |
1421 | token = _cpp_lex_token (pfile); |
1422 | if (token->type == CPP_CLOSE_PAREN) | |
23ff0223 | 1423 | return true; |
93c80368 | 1424 | /* Fall through. */ |
711b8824 | 1425 | |
93c80368 | 1426 | case CPP_EOF: |
0527bc4e | 1427 | cpp_error (pfile, CPP_DL_ERROR, "missing ')' in macro parameter list"); |
23ff0223 | 1428 | return false; |
711b8824 | 1429 | } |
711b8824 | 1430 | } |
93c80368 NB |
1431 | } |
1432 | ||
14baae01 | 1433 | /* Allocate room for a token from a macro's replacement list. */ |
93c80368 | 1434 | static cpp_token * |
6cf87ca4 | 1435 | alloc_expansion_token (cpp_reader *pfile, cpp_macro *macro) |
93c80368 | 1436 | { |
8c3b2693 NB |
1437 | if (BUFF_ROOM (pfile->a_buff) < (macro->count + 1) * sizeof (cpp_token)) |
1438 | _cpp_extend_buff (pfile, &pfile->a_buff, sizeof (cpp_token)); | |
711b8824 | 1439 | |
8c3b2693 | 1440 | return &((cpp_token *) BUFF_FRONT (pfile->a_buff))[macro->count++]; |
14baae01 NB |
1441 | } |
1442 | ||
d15a58c0 NB |
1443 | /* Lex a token from the expansion of MACRO, but mark parameters as we |
1444 | find them and warn of traditional stringification. */ | |
14baae01 | 1445 | static cpp_token * |
6cf87ca4 | 1446 | lex_expansion_token (cpp_reader *pfile, cpp_macro *macro) |
14baae01 | 1447 | { |
ee380365 | 1448 | cpp_token *token, *saved_cur_token; |
14baae01 | 1449 | |
ee380365 | 1450 | saved_cur_token = pfile->cur_token; |
14baae01 NB |
1451 | pfile->cur_token = alloc_expansion_token (pfile, macro); |
1452 | token = _cpp_lex_direct (pfile); | |
ee380365 | 1453 | pfile->cur_token = saved_cur_token; |
93c80368 | 1454 | |
d15a58c0 | 1455 | /* Is this a parameter? */ |
4977bab6 ZW |
1456 | if (token->type == CPP_NAME |
1457 | && (token->val.node->flags & NODE_MACRO_ARG) != 0) | |
93c80368 NB |
1458 | { |
1459 | token->type = CPP_MACRO_ARG; | |
4977bab6 | 1460 | token->val.arg_no = token->val.node->value.arg_index; |
93c80368 NB |
1461 | } |
1462 | else if (CPP_WTRADITIONAL (pfile) && macro->paramc > 0 | |
1463 | && (token->type == CPP_STRING || token->type == CPP_CHAR)) | |
1464 | check_trad_stringification (pfile, macro, &token->val.str); | |
1465 | ||
1466 | return token; | |
711b8824 ZW |
1467 | } |
1468 | ||
cbc69f84 | 1469 | static bool |
6cf87ca4 | 1470 | create_iso_definition (cpp_reader *pfile, cpp_macro *macro) |
711b8824 | 1471 | { |
cbc69f84 | 1472 | cpp_token *token; |
14baae01 | 1473 | const cpp_token *ctoken; |
126e073b SM |
1474 | bool following_paste_op = false; |
1475 | const char *paste_op_error_msg = | |
1476 | N_("'##' cannot appear at either end of a macro expansion"); | |
93c80368 NB |
1477 | |
1478 | /* Get the first token of the expansion (or the '(' of a | |
1479 | function-like macro). */ | |
14baae01 NB |
1480 | ctoken = _cpp_lex_token (pfile); |
1481 | ||
1482 | if (ctoken->type == CPP_OPEN_PAREN && !(ctoken->flags & PREV_WHITE)) | |
93c80368 | 1483 | { |
cbc69f84 | 1484 | bool ok = parse_params (pfile, macro); |
8c3b2693 NB |
1485 | macro->params = (cpp_hashnode **) BUFF_FRONT (pfile->a_buff); |
1486 | if (!ok) | |
cbc69f84 | 1487 | return false; |
8c3b2693 | 1488 | |
d8044160 GK |
1489 | /* Success. Commit or allocate the parameter array. */ |
1490 | if (pfile->hash_table->alloc_subobject) | |
1491 | { | |
c3f829c1 GDR |
1492 | cpp_hashnode **params = |
1493 | (cpp_hashnode **) pfile->hash_table->alloc_subobject | |
1494 | (sizeof (cpp_hashnode *) * macro->paramc); | |
be0f1e54 PB |
1495 | memcpy (params, macro->params, |
1496 | sizeof (cpp_hashnode *) * macro->paramc); | |
1497 | macro->params = params; | |
d8044160 GK |
1498 | } |
1499 | else | |
1500 | BUFF_FRONT (pfile->a_buff) = (uchar *) ¯o->params[macro->paramc]; | |
93c80368 | 1501 | macro->fun_like = 1; |
93c80368 | 1502 | } |
14baae01 | 1503 | else if (ctoken->type != CPP_EOF && !(ctoken->flags & PREV_WHITE)) |
cae064e7 JJ |
1504 | { |
1505 | /* While ISO C99 requires whitespace before replacement text | |
1506 | in a macro definition, ISO C90 with TC1 allows there characters | |
1507 | from the basic source character set. */ | |
1508 | if (CPP_OPTION (pfile, c99)) | |
1509 | cpp_error (pfile, CPP_DL_PEDWARN, | |
1510 | "ISO C99 requires whitespace after the macro name"); | |
1511 | else | |
1512 | { | |
1513 | int warntype = CPP_DL_WARNING; | |
1514 | switch (ctoken->type) | |
1515 | { | |
1516 | case CPP_ATSIGN: | |
1517 | case CPP_AT_NAME: | |
1518 | case CPP_OBJC_STRING: | |
1519 | /* '@' is not in basic character set. */ | |
1520 | warntype = CPP_DL_PEDWARN; | |
1521 | break; | |
1522 | case CPP_OTHER: | |
1523 | /* Basic character set sans letters, digits and _. */ | |
1524 | if (strchr ("!\"#%&'()*+,-./:;<=>?[\\]^{|}~", | |
1525 | ctoken->val.str.text[0]) == NULL) | |
1526 | warntype = CPP_DL_PEDWARN; | |
1527 | break; | |
1528 | default: | |
1529 | /* All other tokens start with a character from basic | |
1530 | character set. */ | |
1531 | break; | |
1532 | } | |
1533 | cpp_error (pfile, warntype, | |
1534 | "missing whitespace after the macro name"); | |
1535 | } | |
1536 | } | |
711b8824 | 1537 | |
14baae01 NB |
1538 | if (macro->fun_like) |
1539 | token = lex_expansion_token (pfile, macro); | |
1540 | else | |
1541 | { | |
1542 | token = alloc_expansion_token (pfile, macro); | |
1543 | *token = *ctoken; | |
1544 | } | |
711b8824 | 1545 | |
93c80368 NB |
1546 | for (;;) |
1547 | { | |
1548 | /* Check the stringifying # constraint 6.10.3.2.1 of | |
1549 | function-like macros when lexing the subsequent token. */ | |
1550 | if (macro->count > 1 && token[-1].type == CPP_HASH && macro->fun_like) | |
1551 | { | |
1552 | if (token->type == CPP_MACRO_ARG) | |
1553 | { | |
1554 | token->flags &= ~PREV_WHITE; | |
1555 | token->flags |= STRINGIFY_ARG; | |
1556 | token->flags |= token[-1].flags & PREV_WHITE; | |
1557 | token[-1] = token[0]; | |
1558 | macro->count--; | |
1559 | } | |
1560 | /* Let assembler get away with murder. */ | |
bdb05a7b | 1561 | else if (CPP_OPTION (pfile, lang) != CLK_ASM) |
93c80368 | 1562 | { |
0527bc4e | 1563 | cpp_error (pfile, CPP_DL_ERROR, |
ebef4e8c | 1564 | "'#' is not followed by a macro parameter"); |
cbc69f84 | 1565 | return false; |
93c80368 NB |
1566 | } |
1567 | } | |
1568 | ||
1569 | if (token->type == CPP_EOF) | |
126e073b SM |
1570 | { |
1571 | /* Paste operator constraint 6.10.3.3.1: | |
1572 | Token-paste ##, can appear in both object-like and | |
1573 | function-like macros, but not at the end. */ | |
1574 | if (following_paste_op) | |
1575 | { | |
1576 | cpp_error (pfile, CPP_DL_ERROR, paste_op_error_msg); | |
1577 | return false; | |
1578 | } | |
1579 | break; | |
1580 | } | |
93c80368 NB |
1581 | |
1582 | /* Paste operator constraint 6.10.3.3.1. */ | |
1583 | if (token->type == CPP_PASTE) | |
1584 | { | |
1585 | /* Token-paste ##, can appear in both object-like and | |
126e073b SM |
1586 | function-like macros, but not at the beginning. */ |
1587 | if (macro->count == 1) | |
93c80368 | 1588 | { |
126e073b | 1589 | cpp_error (pfile, CPP_DL_ERROR, paste_op_error_msg); |
cbc69f84 | 1590 | return false; |
93c80368 | 1591 | } |
711b8824 | 1592 | |
126e073b | 1593 | --macro->count; |
93c80368 | 1594 | token[-1].flags |= PASTE_LEFT; |
93c80368 NB |
1595 | } |
1596 | ||
126e073b | 1597 | following_paste_op = (token->type == CPP_PASTE); |
93c80368 NB |
1598 | token = lex_expansion_token (pfile, macro); |
1599 | } | |
1600 | ||
601328bb | 1601 | macro->exp.tokens = (cpp_token *) BUFF_FRONT (pfile->a_buff); |
d8044160 | 1602 | macro->traditional = 0; |
8c3b2693 | 1603 | |
4c2b647d NB |
1604 | /* Don't count the CPP_EOF. */ |
1605 | macro->count--; | |
93c80368 | 1606 | |
d15a58c0 | 1607 | /* Clear whitespace on first token for warn_of_redefinition(). */ |
8c3b2693 | 1608 | if (macro->count) |
601328bb | 1609 | macro->exp.tokens[0].flags &= ~PREV_WHITE; |
8c3b2693 | 1610 | |
d8044160 GK |
1611 | /* Commit or allocate the memory. */ |
1612 | if (pfile->hash_table->alloc_subobject) | |
1613 | { | |
c3f829c1 GDR |
1614 | cpp_token *tokns = |
1615 | (cpp_token *) pfile->hash_table->alloc_subobject (sizeof (cpp_token) | |
1616 | * macro->count); | |
d8044160 GK |
1617 | memcpy (tokns, macro->exp.tokens, sizeof (cpp_token) * macro->count); |
1618 | macro->exp.tokens = tokns; | |
1619 | } | |
1620 | else | |
1621 | BUFF_FRONT (pfile->a_buff) = (uchar *) ¯o->exp.tokens[macro->count]; | |
8c3b2693 | 1622 | |
cbc69f84 NB |
1623 | return true; |
1624 | } | |
1625 | ||
da7d8304 | 1626 | /* Parse a macro and save its expansion. Returns nonzero on success. */ |
cbc69f84 | 1627 | bool |
6cf87ca4 | 1628 | _cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node) |
cbc69f84 NB |
1629 | { |
1630 | cpp_macro *macro; | |
1631 | unsigned int i; | |
1632 | bool ok; | |
44ed91a1 | 1633 | |
d8044160 | 1634 | if (pfile->hash_table->alloc_subobject) |
c3f829c1 GDR |
1635 | macro = (cpp_macro *) pfile->hash_table->alloc_subobject |
1636 | (sizeof (cpp_macro)); | |
d8044160 GK |
1637 | else |
1638 | macro = (cpp_macro *) _cpp_aligned_alloc (pfile, sizeof (cpp_macro)); | |
cbc69f84 NB |
1639 | macro->line = pfile->directive_line; |
1640 | macro->params = 0; | |
1641 | macro->paramc = 0; | |
1642 | macro->variadic = 0; | |
23345bbb | 1643 | macro->used = !CPP_OPTION (pfile, warn_unused_macros); |
cbc69f84 NB |
1644 | macro->count = 0; |
1645 | macro->fun_like = 0; | |
7065e130 | 1646 | /* To suppress some diagnostics. */ |
12f9df4e | 1647 | macro->syshdr = pfile->buffer && pfile->buffer->sysp != 0; |
7065e130 | 1648 | |
cbc69f84 NB |
1649 | if (CPP_OPTION (pfile, traditional)) |
1650 | ok = _cpp_create_trad_definition (pfile, macro); | |
1651 | else | |
1652 | { | |
cbc69f84 NB |
1653 | ok = create_iso_definition (pfile, macro); |
1654 | ||
ee380365 | 1655 | /* We set the type for SEEN_EOL() in directives.c. |
cbc69f84 NB |
1656 | |
1657 | Longer term we should lex the whole line before coming here, | |
1658 | and just copy the expansion. */ | |
cbc69f84 NB |
1659 | |
1660 | /* Stop the lexer accepting __VA_ARGS__. */ | |
1661 | pfile->state.va_args_ok = 0; | |
1662 | } | |
1663 | ||
1664 | /* Clear the fast argument lookup indices. */ | |
1665 | for (i = macro->paramc; i-- > 0; ) | |
4977bab6 ZW |
1666 | { |
1667 | struct cpp_hashnode *node = macro->params[i]; | |
1668 | node->flags &= ~ NODE_MACRO_ARG; | |
1669 | node->value = ((union _cpp_hashnode_value *) pfile->macro_buffer)[i]; | |
1670 | } | |
cbc69f84 NB |
1671 | |
1672 | if (!ok) | |
1673 | return ok; | |
1674 | ||
c2734e05 | 1675 | if (node->type == NT_MACRO) |
711b8824 | 1676 | { |
a69cbaac NB |
1677 | if (CPP_OPTION (pfile, warn_unused_macros)) |
1678 | _cpp_warn_if_unused_macro (pfile, node, NULL); | |
1679 | ||
cbc69f84 | 1680 | if (warn_of_redefinition (pfile, node, macro)) |
711b8824 | 1681 | { |
0527bc4e | 1682 | cpp_error_with_line (pfile, CPP_DL_PEDWARN, pfile->directive_line, 0, |
ebef4e8c | 1683 | "\"%s\" redefined", NODE_NAME (node)); |
93c80368 | 1684 | |
618cdda7 | 1685 | if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN)) |
0527bc4e | 1686 | cpp_error_with_line (pfile, CPP_DL_PEDWARN, |
cbc69f84 NB |
1687 | node->value.macro->line, 0, |
1688 | "this is the location of the previous definition"); | |
711b8824 | 1689 | } |
711b8824 ZW |
1690 | } |
1691 | ||
c2734e05 NB |
1692 | if (node->type != NT_VOID) |
1693 | _cpp_free_definition (node); | |
1694 | ||
711b8824 | 1695 | /* Enter definition in hash table. */ |
93c80368 NB |
1696 | node->type = NT_MACRO; |
1697 | node->value.macro = macro; | |
607f74e9 TT |
1698 | if (! ustrncmp (NODE_NAME (node), DSC ("__STDC_")) |
1699 | && ustrcmp (NODE_NAME (node), (const uchar *) "__STDC_FORMAT_MACROS")) | |
618cdda7 | 1700 | node->flags |= NODE_WARN; |
711b8824 | 1701 | |
93c80368 | 1702 | return ok; |
711b8824 ZW |
1703 | } |
1704 | ||
d15a58c0 NB |
1705 | /* Warn if a token in STRING matches one of a function-like MACRO's |
1706 | parameters. */ | |
e1aa5140 | 1707 | static void |
6cf87ca4 ZW |
1708 | check_trad_stringification (cpp_reader *pfile, const cpp_macro *macro, |
1709 | const cpp_string *string) | |
e1aa5140 | 1710 | { |
93c80368 | 1711 | unsigned int i, len; |
6338b358 | 1712 | const uchar *p, *q, *limit; |
df383483 | 1713 | |
e1aa5140 | 1714 | /* Loop over the string. */ |
6338b358 NB |
1715 | limit = string->text + string->len - 1; |
1716 | for (p = string->text + 1; p < limit; p = q) | |
e1aa5140 | 1717 | { |
e1aa5140 | 1718 | /* Find the start of an identifier. */ |
61c16b10 GM |
1719 | while (p < limit && !is_idstart (*p)) |
1720 | p++; | |
e1aa5140 KG |
1721 | |
1722 | /* Find the end of the identifier. */ | |
1723 | q = p; | |
61c16b10 GM |
1724 | while (q < limit && is_idchar (*q)) |
1725 | q++; | |
93c80368 NB |
1726 | |
1727 | len = q - p; | |
1728 | ||
e1aa5140 KG |
1729 | /* Loop over the function macro arguments to see if the |
1730 | identifier inside the string matches one of them. */ | |
93c80368 NB |
1731 | for (i = 0; i < macro->paramc; i++) |
1732 | { | |
1733 | const cpp_hashnode *node = macro->params[i]; | |
e1aa5140 | 1734 | |
2a967f3d NB |
1735 | if (NODE_LEN (node) == len |
1736 | && !memcmp (p, NODE_NAME (node), len)) | |
e1aa5140 | 1737 | { |
0527bc4e | 1738 | cpp_error (pfile, CPP_DL_WARNING, |
f458d1d5 | 1739 | "macro argument \"%s\" would be stringified in traditional C", |
ebef4e8c | 1740 | NODE_NAME (node)); |
e1aa5140 KG |
1741 | break; |
1742 | } | |
1743 | } | |
1744 | } | |
1745 | } | |
93c80368 | 1746 | |
7096171b NB |
1747 | /* Returns the name, arguments and expansion of a macro, in a format |
1748 | suitable to be read back in again, and therefore also for DWARF 2 | |
1749 | debugging info. e.g. "PASTE(X, Y) X ## Y", or "MACNAME EXPANSION". | |
1750 | Caller is expected to generate the "#define" bit if needed. The | |
93c80368 | 1751 | returned text is temporary, and automatically freed later. */ |
93c80368 | 1752 | const unsigned char * |
6cf87ca4 | 1753 | cpp_macro_definition (cpp_reader *pfile, const cpp_hashnode *node) |
93c80368 NB |
1754 | { |
1755 | unsigned int i, len; | |
1756 | const cpp_macro *macro = node->value.macro; | |
1757 | unsigned char *buffer; | |
1758 | ||
1759 | if (node->type != NT_MACRO || (node->flags & NODE_BUILTIN)) | |
1760 | { | |
0527bc4e | 1761 | cpp_error (pfile, CPP_DL_ICE, |
ebef4e8c | 1762 | "invalid hash type %d in cpp_macro_definition", node->type); |
93c80368 NB |
1763 | return 0; |
1764 | } | |
1765 | ||
1766 | /* Calculate length. */ | |
8dc901de | 1767 | len = NODE_LEN (node) + 2; /* ' ' and NUL. */ |
93c80368 NB |
1768 | if (macro->fun_like) |
1769 | { | |
64d08263 JB |
1770 | len += 4; /* "()" plus possible final ".." of named |
1771 | varargs (we have + 1 below). */ | |
93c80368 | 1772 | for (i = 0; i < macro->paramc; i++) |
64d08263 | 1773 | len += NODE_LEN (macro->params[i]) + 1; /* "," */ |
93c80368 NB |
1774 | } |
1775 | ||
6da55c00 | 1776 | /* This should match below where we fill in the buffer. */ |
278c4662 NB |
1777 | if (CPP_OPTION (pfile, traditional)) |
1778 | len += _cpp_replacement_text_len (macro); | |
1779 | else | |
93c80368 | 1780 | { |
278c4662 NB |
1781 | for (i = 0; i < macro->count; i++) |
1782 | { | |
1783 | cpp_token *token = ¯o->exp.tokens[i]; | |
93c80368 | 1784 | |
278c4662 NB |
1785 | if (token->type == CPP_MACRO_ARG) |
1786 | len += NODE_LEN (macro->params[token->val.arg_no - 1]); | |
1787 | else | |
6da55c00 EC |
1788 | len += cpp_token_len (token); |
1789 | ||
278c4662 NB |
1790 | if (token->flags & STRINGIFY_ARG) |
1791 | len++; /* "#" */ | |
1792 | if (token->flags & PASTE_LEFT) | |
1793 | len += 3; /* " ##" */ | |
6da55c00 EC |
1794 | if (token->flags & PREV_WHITE) |
1795 | len++; /* " " */ | |
278c4662 | 1796 | } |
93c80368 NB |
1797 | } |
1798 | ||
1799 | if (len > pfile->macro_buffer_len) | |
4b49c365 | 1800 | { |
c3f829c1 GDR |
1801 | pfile->macro_buffer = XRESIZEVEC (unsigned char, |
1802 | pfile->macro_buffer, len); | |
4b49c365 AO |
1803 | pfile->macro_buffer_len = len; |
1804 | } | |
7096171b NB |
1805 | |
1806 | /* Fill in the buffer. Start with the macro name. */ | |
93c80368 | 1807 | buffer = pfile->macro_buffer; |
7096171b NB |
1808 | memcpy (buffer, NODE_NAME (node), NODE_LEN (node)); |
1809 | buffer += NODE_LEN (node); | |
93c80368 NB |
1810 | |
1811 | /* Parameter names. */ | |
1812 | if (macro->fun_like) | |
1813 | { | |
1814 | *buffer++ = '('; | |
1815 | for (i = 0; i < macro->paramc; i++) | |
1816 | { | |
1817 | cpp_hashnode *param = macro->params[i]; | |
1818 | ||
1819 | if (param != pfile->spec_nodes.n__VA_ARGS__) | |
1820 | { | |
a28c5035 NB |
1821 | memcpy (buffer, NODE_NAME (param), NODE_LEN (param)); |
1822 | buffer += NODE_LEN (param); | |
93c80368 NB |
1823 | } |
1824 | ||
1825 | if (i + 1 < macro->paramc) | |
df383483 KH |
1826 | /* Don't emit a space after the comma here; we're trying |
1827 | to emit a Dwarf-friendly definition, and the Dwarf spec | |
1828 | forbids spaces in the argument list. */ | |
64d08263 | 1829 | *buffer++ = ','; |
28e0f040 | 1830 | else if (macro->variadic) |
93c80368 NB |
1831 | *buffer++ = '.', *buffer++ = '.', *buffer++ = '.'; |
1832 | } | |
1833 | *buffer++ = ')'; | |
1834 | } | |
1835 | ||
e37b38d7 JB |
1836 | /* The Dwarf spec requires a space after the macro name, even if the |
1837 | definition is the empty string. */ | |
1838 | *buffer++ = ' '; | |
1839 | ||
278c4662 NB |
1840 | if (CPP_OPTION (pfile, traditional)) |
1841 | buffer = _cpp_copy_replacement_text (macro, buffer); | |
1842 | else if (macro->count) | |
93c80368 | 1843 | /* Expansion tokens. */ |
93c80368 | 1844 | { |
93c80368 NB |
1845 | for (i = 0; i < macro->count; i++) |
1846 | { | |
601328bb | 1847 | cpp_token *token = ¯o->exp.tokens[i]; |
93c80368 NB |
1848 | |
1849 | if (token->flags & PREV_WHITE) | |
1850 | *buffer++ = ' '; | |
1851 | if (token->flags & STRINGIFY_ARG) | |
1852 | *buffer++ = '#'; | |
1853 | ||
1854 | if (token->type == CPP_MACRO_ARG) | |
1855 | { | |
a28c5035 | 1856 | memcpy (buffer, |
6da55c00 EC |
1857 | NODE_NAME (macro->params[token->val.arg_no - 1]), |
1858 | NODE_LEN (macro->params[token->val.arg_no - 1])); | |
1859 | buffer += NODE_LEN (macro->params[token->val.arg_no - 1]); | |
93c80368 NB |
1860 | } |
1861 | else | |
47e20491 | 1862 | buffer = cpp_spell_token (pfile, token, buffer, false); |
93c80368 NB |
1863 | |
1864 | if (token->flags & PASTE_LEFT) | |
1865 | { | |
1866 | *buffer++ = ' '; | |
1867 | *buffer++ = '#'; | |
1868 | *buffer++ = '#'; | |
1869 | /* Next has PREV_WHITE; see _cpp_create_definition. */ | |
1870 | } | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | *buffer = '\0'; | |
1875 | return pfile->macro_buffer; | |
1876 | } |