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27bf414c JM |
1 | /* Parser for C and Objective-C. |
2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
ebfbbdc5 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
5df27e4a | 4 | Free Software Foundation, Inc. |
27bf414c JM |
5 | |
6 | Parser actions based on the old Bison parser; structure somewhat | |
7 | influenced by and fragments based on the C++ parser. | |
8 | ||
9 | This file is part of GCC. | |
10 | ||
11 | GCC is free software; you can redistribute it and/or modify it under | |
12 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 13 | Software Foundation; either version 3, or (at your option) any later |
27bf414c JM |
14 | version. |
15 | ||
16 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
17 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
18 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
22 | along with GCC; see the file COPYING3. If not see |
23 | <http://www.gnu.org/licenses/>. */ | |
27bf414c JM |
24 | |
25 | /* TODO: | |
26 | ||
27 | Make sure all relevant comments, and all relevant code from all | |
28 | actions, brought over from old parser. Verify exact correspondence | |
29 | of syntax accepted. | |
30 | ||
31 | Add testcases covering every input symbol in every state in old and | |
32 | new parsers. | |
33 | ||
34 | Include full syntax for GNU C, including erroneous cases accepted | |
35 | with error messages, in syntax productions in comments. | |
36 | ||
37 | Make more diagnostics in the front end generally take an explicit | |
38 | location rather than implicitly using input_location. */ | |
39 | ||
40 | #include "config.h" | |
41 | #include "system.h" | |
42 | #include "coretypes.h" | |
f4ce02c5 | 43 | #include "tm.h" /* For rtl.h: needs enum reg_class. */ |
27bf414c JM |
44 | #include "tree.h" |
45 | #include "langhooks.h" | |
46 | #include "input.h" | |
47 | #include "cpplib.h" | |
48 | #include "timevar.h" | |
39dabefd | 49 | #include "c-family/c-pragma.h" |
27bf414c JM |
50 | #include "c-tree.h" |
51 | #include "flags.h" | |
52 | #include "output.h" | |
53 | #include "toplev.h" | |
54 | #include "ggc.h" | |
39dabefd | 55 | #include "c-family/c-common.h" |
bc4071dd RH |
56 | #include "vec.h" |
57 | #include "target.h" | |
474eccc6 | 58 | #include "cgraph.h" |
68a607d8 | 59 | #include "plugin.h" |
27bf414c JM |
60 | |
61 | \f | |
27bf414c JM |
62 | /* Initialization routine for this file. */ |
63 | ||
64 | void | |
65 | c_parse_init (void) | |
66 | { | |
67 | /* The only initialization required is of the reserved word | |
68 | identifiers. */ | |
69 | unsigned int i; | |
70 | tree id; | |
eea1139b | 71 | int mask = 0; |
27bf414c | 72 | |
36c5e70a BE |
73 | /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in |
74 | the c_token structure. */ | |
75 | gcc_assert (RID_MAX <= 255); | |
76 | ||
eea1139b ILT |
77 | mask |= D_CXXONLY; |
78 | if (!flag_isoc99) | |
79 | mask |= D_C99; | |
80 | if (flag_no_asm) | |
81 | { | |
82 | mask |= D_ASM | D_EXT; | |
83 | if (!flag_isoc99) | |
84 | mask |= D_EXT89; | |
85 | } | |
27bf414c | 86 | if (!c_dialect_objc ()) |
eea1139b | 87 | mask |= D_OBJC | D_CXX_OBJC; |
27bf414c | 88 | |
a9429e29 | 89 | ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX); |
eea1139b | 90 | for (i = 0; i < num_c_common_reswords; i++) |
27bf414c JM |
91 | { |
92 | /* If a keyword is disabled, do not enter it into the table | |
93 | and so create a canonical spelling that isn't a keyword. */ | |
eea1139b ILT |
94 | if (c_common_reswords[i].disable & mask) |
95 | { | |
96 | if (warn_cxx_compat | |
97 | && (c_common_reswords[i].disable & D_CXXWARN)) | |
98 | { | |
99 | id = get_identifier (c_common_reswords[i].word); | |
100 | C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN); | |
101 | C_IS_RESERVED_WORD (id) = 1; | |
102 | } | |
103 | continue; | |
104 | } | |
27bf414c | 105 | |
eea1139b ILT |
106 | id = get_identifier (c_common_reswords[i].word); |
107 | C_SET_RID_CODE (id, c_common_reswords[i].rid); | |
27bf414c | 108 | C_IS_RESERVED_WORD (id) = 1; |
eea1139b | 109 | ridpointers [(int) c_common_reswords[i].rid] = id; |
27bf414c JM |
110 | } |
111 | } | |
112 | \f | |
113 | /* The C lexer intermediates between the lexer in cpplib and c-lex.c | |
114 | and the C parser. Unlike the C++ lexer, the parser structure | |
115 | stores the lexer information instead of using a separate structure. | |
116 | Identifiers are separated into ordinary identifiers, type names, | |
117 | keywords and some other Objective-C types of identifiers, and some | |
118 | look-ahead is maintained. | |
119 | ||
120 | ??? It might be a good idea to lex the whole file up front (as for | |
121 | C++). It would then be possible to share more of the C and C++ | |
122 | lexer code, if desired. */ | |
123 | ||
124 | /* The following local token type is used. */ | |
125 | ||
126 | /* A keyword. */ | |
127 | #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) | |
128 | ||
27bf414c JM |
129 | /* More information about the type of a CPP_NAME token. */ |
130 | typedef enum c_id_kind { | |
131 | /* An ordinary identifier. */ | |
132 | C_ID_ID, | |
133 | /* An identifier declared as a typedef name. */ | |
134 | C_ID_TYPENAME, | |
135 | /* An identifier declared as an Objective-C class name. */ | |
136 | C_ID_CLASSNAME, | |
36c5e70a BE |
137 | /* An address space identifier. */ |
138 | C_ID_ADDRSPACE, | |
27bf414c JM |
139 | /* Not an identifier. */ |
140 | C_ID_NONE | |
141 | } c_id_kind; | |
142 | ||
143 | /* A single C token after string literal concatenation and conversion | |
144 | of preprocessing tokens to tokens. */ | |
d1b38208 | 145 | typedef struct GTY (()) c_token { |
27bf414c JM |
146 | /* The kind of token. */ |
147 | ENUM_BITFIELD (cpp_ttype) type : 8; | |
148 | /* If this token is a CPP_NAME, this value indicates whether also | |
149 | declared as some kind of type. Otherwise, it is C_ID_NONE. */ | |
150 | ENUM_BITFIELD (c_id_kind) id_kind : 8; | |
151 | /* If this token is a keyword, this value indicates which keyword. | |
152 | Otherwise, this value is RID_MAX. */ | |
153 | ENUM_BITFIELD (rid) keyword : 8; | |
bc4071dd RH |
154 | /* If this token is a CPP_PRAGMA, this indicates the pragma that |
155 | was seen. Otherwise it is PRAGMA_NONE. */ | |
13fa1171 | 156 | ENUM_BITFIELD (pragma_kind) pragma_kind : 8; |
27bf414c JM |
157 | /* The location at which this token was found. */ |
158 | location_t location; | |
8415f317 NF |
159 | /* The value associated with this token, if any. */ |
160 | tree value; | |
27bf414c JM |
161 | } c_token; |
162 | ||
163 | /* A parser structure recording information about the state and | |
164 | context of parsing. Includes lexer information with up to two | |
165 | tokens of look-ahead; more are not needed for C. */ | |
d1b38208 | 166 | typedef struct GTY(()) c_parser { |
27bf414c JM |
167 | /* The look-ahead tokens. */ |
168 | c_token tokens[2]; | |
169 | /* How many look-ahead tokens are available (0, 1 or 2). */ | |
170 | short tokens_avail; | |
171 | /* True if a syntax error is being recovered from; false otherwise. | |
172 | c_parser_error sets this flag. It should clear this flag when | |
173 | enough tokens have been consumed to recover from the error. */ | |
174 | BOOL_BITFIELD error : 1; | |
bc4071dd RH |
175 | /* True if we're processing a pragma, and shouldn't automatically |
176 | consume CPP_PRAGMA_EOL. */ | |
177 | BOOL_BITFIELD in_pragma : 1; | |
b4b56033 MLI |
178 | /* True if we're parsing the outermost block of an if statement. */ |
179 | BOOL_BITFIELD in_if_block : 1; | |
46c2514e TT |
180 | /* True if we want to lex an untranslated string. */ |
181 | BOOL_BITFIELD lex_untranslated_string : 1; | |
1973201f | 182 | |
0bacb8c7 | 183 | /* Objective-C specific parser/lexer information. */ |
1973201f NP |
184 | |
185 | /* True if we are in a context where the Objective-C "PQ" keywords | |
186 | are considered keywords. */ | |
0bacb8c7 | 187 | BOOL_BITFIELD objc_pq_context : 1; |
f05b9d93 NP |
188 | /* True if we are parsing a (potential) Objective-C foreach |
189 | statement. This is set to true after we parsed 'for (' and while | |
190 | we wait for 'in' or ';' to decide if it's a standard C for loop or an | |
191 | Objective-C foreach loop. */ | |
192 | BOOL_BITFIELD objc_could_be_foreach_context : 1; | |
0bacb8c7 TT |
193 | /* The following flag is needed to contextualize Objective-C lexical |
194 | analysis. In some cases (e.g., 'int NSObject;'), it is | |
195 | undesirable to bind an identifier to an Objective-C class, even | |
196 | if a class with that name exists. */ | |
197 | BOOL_BITFIELD objc_need_raw_identifier : 1; | |
668ea4b1 IS |
198 | /* True if we are in a context where the Objective-C "Property attribute" |
199 | keywords are valid. */ | |
200 | BOOL_BITFIELD objc_property_attr_context : 1; | |
27bf414c JM |
201 | } c_parser; |
202 | ||
bc4071dd RH |
203 | |
204 | /* The actual parser and external interface. ??? Does this need to be | |
205 | garbage-collected? */ | |
206 | ||
207 | static GTY (()) c_parser *the_parser; | |
208 | ||
27bf414c JM |
209 | /* Read in and lex a single token, storing it in *TOKEN. */ |
210 | ||
211 | static void | |
0bacb8c7 | 212 | c_lex_one_token (c_parser *parser, c_token *token) |
27bf414c JM |
213 | { |
214 | timevar_push (TV_LEX); | |
bc4071dd | 215 | |
46c2514e TT |
216 | token->type = c_lex_with_flags (&token->value, &token->location, NULL, |
217 | (parser->lex_untranslated_string | |
218 | ? C_LEX_STRING_NO_TRANSLATE : 0)); | |
bc4071dd RH |
219 | token->id_kind = C_ID_NONE; |
220 | token->keyword = RID_MAX; | |
221 | token->pragma_kind = PRAGMA_NONE; | |
bc4071dd | 222 | |
27bf414c JM |
223 | switch (token->type) |
224 | { | |
225 | case CPP_NAME: | |
27bf414c JM |
226 | { |
227 | tree decl; | |
228 | ||
0bacb8c7 TT |
229 | bool objc_force_identifier = parser->objc_need_raw_identifier; |
230 | if (c_dialect_objc ()) | |
231 | parser->objc_need_raw_identifier = false; | |
27bf414c JM |
232 | |
233 | if (C_IS_RESERVED_WORD (token->value)) | |
234 | { | |
235 | enum rid rid_code = C_RID_CODE (token->value); | |
236 | ||
eea1139b ILT |
237 | if (rid_code == RID_CXX_COMPAT_WARN) |
238 | { | |
3ba09659 AH |
239 | warning_at (token->location, |
240 | OPT_Wc___compat, | |
88388a52 JM |
241 | "identifier %qE conflicts with C++ keyword", |
242 | token->value); | |
eea1139b | 243 | } |
36c5e70a BE |
244 | else if (rid_code >= RID_FIRST_ADDR_SPACE |
245 | && rid_code <= RID_LAST_ADDR_SPACE) | |
246 | { | |
247 | token->id_kind = C_ID_ADDRSPACE; | |
248 | token->keyword = rid_code; | |
249 | break; | |
250 | } | |
1973201f | 251 | else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code)) |
27bf414c | 252 | { |
1973201f NP |
253 | /* We found an Objective-C "pq" keyword (in, out, |
254 | inout, bycopy, byref, oneway). They need special | |
255 | care because the interpretation depends on the | |
256 | context. | |
257 | */ | |
258 | if (parser->objc_pq_context) | |
27bf414c | 259 | { |
27bf414c JM |
260 | token->type = CPP_KEYWORD; |
261 | token->keyword = rid_code; | |
262 | break; | |
263 | } | |
f05b9d93 NP |
264 | else if (parser->objc_could_be_foreach_context |
265 | && rid_code == RID_IN) | |
266 | { | |
267 | /* We are in Objective-C, inside a (potential) | |
268 | foreach context (which means after having | |
269 | parsed 'for (', but before having parsed ';'), | |
270 | and we found 'in'. We consider it the keyword | |
271 | which terminates the declaration at the | |
272 | beginning of a foreach-statement. Note that | |
273 | this means you can't use 'in' for anything else | |
274 | in that context; in particular, in Objective-C | |
275 | you can't use 'in' as the name of the running | |
276 | variable in a C for loop. We could potentially | |
277 | try to add code here to disambiguate, but it | |
278 | seems a reasonable limitation. | |
279 | */ | |
280 | token->type = CPP_KEYWORD; | |
281 | token->keyword = rid_code; | |
282 | break; | |
283 | } | |
1973201f NP |
284 | /* Else, "pq" keywords outside of the "pq" context are |
285 | not keywords, and we fall through to the code for | |
286 | normal tokens. | |
287 | */ | |
288 | } | |
668ea4b1 IS |
289 | else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code)) |
290 | { | |
291 | /* We found an Objective-C "property attribute" keyword | |
292 | (readonly, copies, getter, setter, ivar). These are | |
293 | only valid in the property context. */ | |
294 | if (parser->objc_property_attr_context) | |
295 | { | |
296 | token->type = CPP_KEYWORD; | |
297 | token->keyword = rid_code; | |
298 | break; | |
299 | } | |
300 | /* Else they are not special keywords. | |
301 | */ | |
302 | } | |
1973201f NP |
303 | else if (c_dialect_objc () |
304 | && (OBJC_IS_AT_KEYWORD (rid_code) | |
305 | || OBJC_IS_CXX_KEYWORD (rid_code))) | |
306 | { | |
307 | /* We found one of the Objective-C "@" keywords (defs, | |
308 | selector, synchronized, etc) or one of the | |
309 | Objective-C "cxx" keywords (class, private, | |
310 | protected, public, try, catch, throw) without a | |
311 | preceding '@' sign. Do nothing and fall through to | |
312 | the code for normal tokens (in C++ we would still | |
313 | consider the CXX ones keywords, but not in C). | |
314 | */ | |
315 | ; | |
27bf414c JM |
316 | } |
317 | else | |
318 | { | |
27bf414c JM |
319 | token->type = CPP_KEYWORD; |
320 | token->keyword = rid_code; | |
321 | break; | |
322 | } | |
323 | } | |
324 | ||
325 | decl = lookup_name (token->value); | |
326 | if (decl) | |
327 | { | |
328 | if (TREE_CODE (decl) == TYPE_DECL) | |
329 | { | |
330 | token->id_kind = C_ID_TYPENAME; | |
331 | break; | |
332 | } | |
333 | } | |
334 | else if (c_dialect_objc ()) | |
335 | { | |
336 | tree objc_interface_decl = objc_is_class_name (token->value); | |
337 | /* Objective-C class names are in the same namespace as | |
338 | variables and typedefs, and hence are shadowed by local | |
339 | declarations. */ | |
340 | if (objc_interface_decl | |
341 | && (global_bindings_p () | |
342 | || (!objc_force_identifier && !decl))) | |
343 | { | |
344 | token->value = objc_interface_decl; | |
345 | token->id_kind = C_ID_CLASSNAME; | |
346 | break; | |
347 | } | |
348 | } | |
bc4071dd | 349 | token->id_kind = C_ID_ID; |
27bf414c | 350 | } |
27bf414c JM |
351 | break; |
352 | case CPP_AT_NAME: | |
353 | /* This only happens in Objective-C; it must be a keyword. */ | |
354 | token->type = CPP_KEYWORD; | |
49b91f05 NP |
355 | switch (C_RID_CODE (token->value)) |
356 | { | |
357 | /* Replace 'class' with '@class', 'private' with '@private', | |
358 | etc. This prevents confusion with the C++ keyword | |
359 | 'class', and makes the tokens consistent with other | |
360 | Objective-C 'AT' keywords. For example '@class' is | |
361 | reported as RID_AT_CLASS which is consistent with | |
362 | '@synchronized', which is reported as | |
363 | RID_AT_SYNCHRONIZED. | |
364 | */ | |
365 | case RID_CLASS: token->keyword = RID_AT_CLASS; break; | |
366 | case RID_PRIVATE: token->keyword = RID_AT_PRIVATE; break; | |
367 | case RID_PROTECTED: token->keyword = RID_AT_PROTECTED; break; | |
368 | case RID_PUBLIC: token->keyword = RID_AT_PUBLIC; break; | |
369 | case RID_THROW: token->keyword = RID_AT_THROW; break; | |
370 | case RID_TRY: token->keyword = RID_AT_TRY; break; | |
371 | case RID_CATCH: token->keyword = RID_AT_CATCH; break; | |
372 | default: token->keyword = C_RID_CODE (token->value); | |
373 | } | |
27bf414c JM |
374 | break; |
375 | case CPP_COLON: | |
376 | case CPP_COMMA: | |
377 | case CPP_CLOSE_PAREN: | |
378 | case CPP_SEMICOLON: | |
379 | /* These tokens may affect the interpretation of any identifiers | |
380 | following, if doing Objective-C. */ | |
0bacb8c7 TT |
381 | if (c_dialect_objc ()) |
382 | parser->objc_need_raw_identifier = false; | |
bc4071dd RH |
383 | break; |
384 | case CPP_PRAGMA: | |
385 | /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */ | |
d75d71e0 | 386 | token->pragma_kind = (enum pragma_kind) TREE_INT_CST_LOW (token->value); |
bc4071dd | 387 | token->value = NULL; |
27bf414c JM |
388 | break; |
389 | default: | |
27bf414c JM |
390 | break; |
391 | } | |
392 | timevar_pop (TV_LEX); | |
393 | } | |
394 | ||
395 | /* Return a pointer to the next token from PARSER, reading it in if | |
396 | necessary. */ | |
397 | ||
398 | static inline c_token * | |
399 | c_parser_peek_token (c_parser *parser) | |
400 | { | |
401 | if (parser->tokens_avail == 0) | |
402 | { | |
0bacb8c7 | 403 | c_lex_one_token (parser, &parser->tokens[0]); |
27bf414c JM |
404 | parser->tokens_avail = 1; |
405 | } | |
406 | return &parser->tokens[0]; | |
407 | } | |
408 | ||
409 | /* Return true if the next token from PARSER has the indicated | |
410 | TYPE. */ | |
411 | ||
412 | static inline bool | |
413 | c_parser_next_token_is (c_parser *parser, enum cpp_ttype type) | |
414 | { | |
415 | return c_parser_peek_token (parser)->type == type; | |
416 | } | |
417 | ||
418 | /* Return true if the next token from PARSER does not have the | |
419 | indicated TYPE. */ | |
420 | ||
421 | static inline bool | |
422 | c_parser_next_token_is_not (c_parser *parser, enum cpp_ttype type) | |
423 | { | |
424 | return !c_parser_next_token_is (parser, type); | |
425 | } | |
426 | ||
427 | /* Return true if the next token from PARSER is the indicated | |
428 | KEYWORD. */ | |
429 | ||
430 | static inline bool | |
431 | c_parser_next_token_is_keyword (c_parser *parser, enum rid keyword) | |
432 | { | |
dbc518f0 | 433 | return c_parser_peek_token (parser)->keyword == keyword; |
27bf414c JM |
434 | } |
435 | ||
436 | /* Return true if TOKEN can start a type name, | |
437 | false otherwise. */ | |
438 | static bool | |
439 | c_token_starts_typename (c_token *token) | |
440 | { | |
441 | switch (token->type) | |
442 | { | |
443 | case CPP_NAME: | |
444 | switch (token->id_kind) | |
445 | { | |
446 | case C_ID_ID: | |
447 | return false; | |
36c5e70a BE |
448 | case C_ID_ADDRSPACE: |
449 | return true; | |
27bf414c JM |
450 | case C_ID_TYPENAME: |
451 | return true; | |
452 | case C_ID_CLASSNAME: | |
453 | gcc_assert (c_dialect_objc ()); | |
454 | return true; | |
455 | default: | |
456 | gcc_unreachable (); | |
457 | } | |
458 | case CPP_KEYWORD: | |
459 | switch (token->keyword) | |
460 | { | |
461 | case RID_UNSIGNED: | |
462 | case RID_LONG: | |
a6766312 | 463 | case RID_INT128: |
27bf414c JM |
464 | case RID_SHORT: |
465 | case RID_SIGNED: | |
466 | case RID_COMPLEX: | |
467 | case RID_INT: | |
468 | case RID_CHAR: | |
469 | case RID_FLOAT: | |
470 | case RID_DOUBLE: | |
471 | case RID_VOID: | |
9a8ce21f JG |
472 | case RID_DFLOAT32: |
473 | case RID_DFLOAT64: | |
474 | case RID_DFLOAT128: | |
27bf414c JM |
475 | case RID_BOOL: |
476 | case RID_ENUM: | |
477 | case RID_STRUCT: | |
478 | case RID_UNION: | |
479 | case RID_TYPEOF: | |
480 | case RID_CONST: | |
481 | case RID_VOLATILE: | |
482 | case RID_RESTRICT: | |
483 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
484 | case RID_FRACT: |
485 | case RID_ACCUM: | |
486 | case RID_SAT: | |
27bf414c JM |
487 | return true; |
488 | default: | |
489 | return false; | |
490 | } | |
491 | case CPP_LESS: | |
492 | if (c_dialect_objc ()) | |
493 | return true; | |
494 | return false; | |
495 | default: | |
496 | return false; | |
497 | } | |
498 | } | |
499 | ||
500 | /* Return true if the next token from PARSER can start a type name, | |
501 | false otherwise. */ | |
502 | static inline bool | |
503 | c_parser_next_token_starts_typename (c_parser *parser) | |
504 | { | |
505 | c_token *token = c_parser_peek_token (parser); | |
506 | return c_token_starts_typename (token); | |
507 | } | |
508 | ||
509 | /* Return true if TOKEN can start declaration specifiers, false | |
510 | otherwise. */ | |
511 | static bool | |
512 | c_token_starts_declspecs (c_token *token) | |
513 | { | |
514 | switch (token->type) | |
515 | { | |
516 | case CPP_NAME: | |
517 | switch (token->id_kind) | |
518 | { | |
519 | case C_ID_ID: | |
520 | return false; | |
36c5e70a BE |
521 | case C_ID_ADDRSPACE: |
522 | return true; | |
27bf414c JM |
523 | case C_ID_TYPENAME: |
524 | return true; | |
525 | case C_ID_CLASSNAME: | |
526 | gcc_assert (c_dialect_objc ()); | |
527 | return true; | |
528 | default: | |
529 | gcc_unreachable (); | |
530 | } | |
531 | case CPP_KEYWORD: | |
532 | switch (token->keyword) | |
533 | { | |
534 | case RID_STATIC: | |
535 | case RID_EXTERN: | |
536 | case RID_REGISTER: | |
537 | case RID_TYPEDEF: | |
538 | case RID_INLINE: | |
539 | case RID_AUTO: | |
540 | case RID_THREAD: | |
541 | case RID_UNSIGNED: | |
542 | case RID_LONG: | |
a6766312 | 543 | case RID_INT128: |
27bf414c JM |
544 | case RID_SHORT: |
545 | case RID_SIGNED: | |
546 | case RID_COMPLEX: | |
547 | case RID_INT: | |
548 | case RID_CHAR: | |
549 | case RID_FLOAT: | |
550 | case RID_DOUBLE: | |
551 | case RID_VOID: | |
9a8ce21f JG |
552 | case RID_DFLOAT32: |
553 | case RID_DFLOAT64: | |
554 | case RID_DFLOAT128: | |
27bf414c JM |
555 | case RID_BOOL: |
556 | case RID_ENUM: | |
557 | case RID_STRUCT: | |
558 | case RID_UNION: | |
559 | case RID_TYPEOF: | |
560 | case RID_CONST: | |
561 | case RID_VOLATILE: | |
562 | case RID_RESTRICT: | |
563 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
564 | case RID_FRACT: |
565 | case RID_ACCUM: | |
566 | case RID_SAT: | |
27bf414c JM |
567 | return true; |
568 | default: | |
569 | return false; | |
570 | } | |
571 | case CPP_LESS: | |
572 | if (c_dialect_objc ()) | |
573 | return true; | |
574 | return false; | |
575 | default: | |
576 | return false; | |
577 | } | |
578 | } | |
579 | ||
32912286 JM |
580 | |
581 | /* Return true if TOKEN can start declaration specifiers or a static | |
582 | assertion, false otherwise. */ | |
583 | static bool | |
584 | c_token_starts_declaration (c_token *token) | |
585 | { | |
586 | if (c_token_starts_declspecs (token) | |
587 | || token->keyword == RID_STATIC_ASSERT) | |
588 | return true; | |
589 | else | |
590 | return false; | |
591 | } | |
592 | ||
668ea4b1 IS |
593 | static c_token *c_parser_peek_2nd_token (c_parser *parser); |
594 | ||
27bf414c JM |
595 | /* Return true if the next token from PARSER can start declaration |
596 | specifiers, false otherwise. */ | |
597 | static inline bool | |
598 | c_parser_next_token_starts_declspecs (c_parser *parser) | |
599 | { | |
600 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
601 | |
602 | /* In Objective-C, a classname normally starts a declspecs unless it | |
603 | is immediately followed by a dot. In that case, it is the | |
604 | Objective-C 2.0 "dot-syntax" for class objects, ie, calls the | |
605 | setter/getter on the class. c_token_starts_declspecs() can't | |
606 | differentiate between the two cases because it only checks the | |
607 | current token, so we have a special check here. */ | |
608 | if (c_dialect_objc () | |
609 | && token->type == CPP_NAME | |
610 | && token->id_kind == C_ID_CLASSNAME | |
611 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
612 | return false; | |
613 | ||
27bf414c JM |
614 | return c_token_starts_declspecs (token); |
615 | } | |
616 | ||
32912286 JM |
617 | /* Return true if the next token from PARSER can start declaration |
618 | specifiers or a static assertion, false otherwise. */ | |
619 | static inline bool | |
620 | c_parser_next_token_starts_declaration (c_parser *parser) | |
621 | { | |
622 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
623 | |
624 | /* Same as above. */ | |
625 | if (c_dialect_objc () | |
626 | && token->type == CPP_NAME | |
627 | && token->id_kind == C_ID_CLASSNAME | |
628 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
629 | return false; | |
630 | ||
32912286 JM |
631 | return c_token_starts_declaration (token); |
632 | } | |
633 | ||
27bf414c JM |
634 | /* Return a pointer to the next-but-one token from PARSER, reading it |
635 | in if necessary. The next token is already read in. */ | |
636 | ||
637 | static c_token * | |
638 | c_parser_peek_2nd_token (c_parser *parser) | |
639 | { | |
640 | if (parser->tokens_avail >= 2) | |
641 | return &parser->tokens[1]; | |
642 | gcc_assert (parser->tokens_avail == 1); | |
643 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
bc4071dd | 644 | gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL); |
0bacb8c7 | 645 | c_lex_one_token (parser, &parser->tokens[1]); |
27bf414c JM |
646 | parser->tokens_avail = 2; |
647 | return &parser->tokens[1]; | |
648 | } | |
649 | ||
650 | /* Consume the next token from PARSER. */ | |
651 | ||
652 | static void | |
653 | c_parser_consume_token (c_parser *parser) | |
654 | { | |
bc4071dd RH |
655 | gcc_assert (parser->tokens_avail >= 1); |
656 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
657 | gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL); | |
658 | gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA); | |
27bf414c JM |
659 | if (parser->tokens_avail == 2) |
660 | parser->tokens[0] = parser->tokens[1]; | |
27bf414c JM |
661 | parser->tokens_avail--; |
662 | } | |
663 | ||
bc4071dd RH |
664 | /* Expect the current token to be a #pragma. Consume it and remember |
665 | that we've begun parsing a pragma. */ | |
666 | ||
667 | static void | |
668 | c_parser_consume_pragma (c_parser *parser) | |
669 | { | |
670 | gcc_assert (!parser->in_pragma); | |
671 | gcc_assert (parser->tokens_avail >= 1); | |
672 | gcc_assert (parser->tokens[0].type == CPP_PRAGMA); | |
673 | if (parser->tokens_avail == 2) | |
674 | parser->tokens[0] = parser->tokens[1]; | |
675 | parser->tokens_avail--; | |
676 | parser->in_pragma = true; | |
677 | } | |
678 | ||
27bf414c JM |
679 | /* Update the globals input_location and in_system_header from |
680 | TOKEN. */ | |
681 | static inline void | |
682 | c_parser_set_source_position_from_token (c_token *token) | |
683 | { | |
684 | if (token->type != CPP_EOF) | |
685 | { | |
686 | input_location = token->location; | |
27bf414c JM |
687 | } |
688 | } | |
689 | ||
27bf414c JM |
690 | /* Issue a diagnostic of the form |
691 | FILE:LINE: MESSAGE before TOKEN | |
692 | where TOKEN is the next token in the input stream of PARSER. | |
693 | MESSAGE (specified by the caller) is usually of the form "expected | |
694 | OTHER-TOKEN". | |
695 | ||
696 | Do not issue a diagnostic if still recovering from an error. | |
697 | ||
698 | ??? This is taken from the C++ parser, but building up messages in | |
699 | this way is not i18n-friendly and some other approach should be | |
700 | used. */ | |
701 | ||
702 | static void | |
4b794eaf | 703 | c_parser_error (c_parser *parser, const char *gmsgid) |
27bf414c JM |
704 | { |
705 | c_token *token = c_parser_peek_token (parser); | |
706 | if (parser->error) | |
707 | return; | |
708 | parser->error = true; | |
4b794eaf | 709 | if (!gmsgid) |
27bf414c JM |
710 | return; |
711 | /* This diagnostic makes more sense if it is tagged to the line of | |
712 | the token we just peeked at. */ | |
713 | c_parser_set_source_position_from_token (token); | |
4b794eaf | 714 | c_parse_error (gmsgid, |
27bf414c JM |
715 | /* Because c_parse_error does not understand |
716 | CPP_KEYWORD, keywords are treated like | |
717 | identifiers. */ | |
718 | (token->type == CPP_KEYWORD ? CPP_NAME : token->type), | |
cfc93532 MLI |
719 | /* ??? The C parser does not save the cpp flags of a |
720 | token, we need to pass 0 here and we will not get | |
721 | the source spelling of some tokens but rather the | |
722 | canonical spelling. */ | |
723 | token->value, /*flags=*/0); | |
27bf414c JM |
724 | } |
725 | ||
726 | /* If the next token is of the indicated TYPE, consume it. Otherwise, | |
727 | issue the error MSGID. If MSGID is NULL then a message has already | |
728 | been produced and no message will be produced this time. Returns | |
729 | true if found, false otherwise. */ | |
730 | ||
731 | static bool | |
732 | c_parser_require (c_parser *parser, | |
733 | enum cpp_ttype type, | |
734 | const char *msgid) | |
735 | { | |
736 | if (c_parser_next_token_is (parser, type)) | |
737 | { | |
738 | c_parser_consume_token (parser); | |
739 | return true; | |
740 | } | |
741 | else | |
742 | { | |
743 | c_parser_error (parser, msgid); | |
744 | return false; | |
745 | } | |
746 | } | |
747 | ||
748 | /* If the next token is the indicated keyword, consume it. Otherwise, | |
749 | issue the error MSGID. Returns true if found, false otherwise. */ | |
750 | ||
751 | static bool | |
752 | c_parser_require_keyword (c_parser *parser, | |
753 | enum rid keyword, | |
754 | const char *msgid) | |
755 | { | |
756 | if (c_parser_next_token_is_keyword (parser, keyword)) | |
757 | { | |
758 | c_parser_consume_token (parser); | |
759 | return true; | |
760 | } | |
761 | else | |
762 | { | |
763 | c_parser_error (parser, msgid); | |
764 | return false; | |
765 | } | |
766 | } | |
767 | ||
768 | /* Like c_parser_require, except that tokens will be skipped until the | |
769 | desired token is found. An error message is still produced if the | |
770 | next token is not as expected. If MSGID is NULL then a message has | |
771 | already been produced and no message will be produced this | |
772 | time. */ | |
773 | ||
774 | static void | |
775 | c_parser_skip_until_found (c_parser *parser, | |
776 | enum cpp_ttype type, | |
777 | const char *msgid) | |
778 | { | |
779 | unsigned nesting_depth = 0; | |
780 | ||
781 | if (c_parser_require (parser, type, msgid)) | |
782 | return; | |
783 | ||
784 | /* Skip tokens until the desired token is found. */ | |
785 | while (true) | |
786 | { | |
787 | /* Peek at the next token. */ | |
788 | c_token *token = c_parser_peek_token (parser); | |
789 | /* If we've reached the token we want, consume it and stop. */ | |
790 | if (token->type == type && !nesting_depth) | |
791 | { | |
792 | c_parser_consume_token (parser); | |
793 | break; | |
794 | } | |
bc4071dd | 795 | |
27bf414c JM |
796 | /* If we've run out of tokens, stop. */ |
797 | if (token->type == CPP_EOF) | |
798 | return; | |
bc4071dd RH |
799 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
800 | return; | |
27bf414c JM |
801 | if (token->type == CPP_OPEN_BRACE |
802 | || token->type == CPP_OPEN_PAREN | |
803 | || token->type == CPP_OPEN_SQUARE) | |
804 | ++nesting_depth; | |
805 | else if (token->type == CPP_CLOSE_BRACE | |
806 | || token->type == CPP_CLOSE_PAREN | |
807 | || token->type == CPP_CLOSE_SQUARE) | |
808 | { | |
809 | if (nesting_depth-- == 0) | |
810 | break; | |
811 | } | |
812 | /* Consume this token. */ | |
813 | c_parser_consume_token (parser); | |
814 | } | |
815 | parser->error = false; | |
816 | } | |
817 | ||
818 | /* Skip tokens until the end of a parameter is found, but do not | |
819 | consume the comma, semicolon or closing delimiter. */ | |
820 | ||
821 | static void | |
822 | c_parser_skip_to_end_of_parameter (c_parser *parser) | |
823 | { | |
824 | unsigned nesting_depth = 0; | |
825 | ||
826 | while (true) | |
827 | { | |
828 | c_token *token = c_parser_peek_token (parser); | |
829 | if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON) | |
830 | && !nesting_depth) | |
831 | break; | |
832 | /* If we've run out of tokens, stop. */ | |
833 | if (token->type == CPP_EOF) | |
834 | return; | |
bc4071dd RH |
835 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
836 | return; | |
27bf414c JM |
837 | if (token->type == CPP_OPEN_BRACE |
838 | || token->type == CPP_OPEN_PAREN | |
839 | || token->type == CPP_OPEN_SQUARE) | |
840 | ++nesting_depth; | |
841 | else if (token->type == CPP_CLOSE_BRACE | |
842 | || token->type == CPP_CLOSE_PAREN | |
843 | || token->type == CPP_CLOSE_SQUARE) | |
844 | { | |
845 | if (nesting_depth-- == 0) | |
846 | break; | |
847 | } | |
848 | /* Consume this token. */ | |
849 | c_parser_consume_token (parser); | |
850 | } | |
851 | parser->error = false; | |
852 | } | |
853 | ||
bc4071dd RH |
854 | /* Expect to be at the end of the pragma directive and consume an |
855 | end of line marker. */ | |
856 | ||
857 | static void | |
858 | c_parser_skip_to_pragma_eol (c_parser *parser) | |
859 | { | |
860 | gcc_assert (parser->in_pragma); | |
861 | parser->in_pragma = false; | |
862 | ||
863 | if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line")) | |
864 | while (true) | |
865 | { | |
866 | c_token *token = c_parser_peek_token (parser); | |
867 | if (token->type == CPP_EOF) | |
868 | break; | |
869 | if (token->type == CPP_PRAGMA_EOL) | |
870 | { | |
871 | c_parser_consume_token (parser); | |
872 | break; | |
873 | } | |
874 | c_parser_consume_token (parser); | |
875 | } | |
876 | ||
877 | parser->error = false; | |
878 | } | |
27bf414c | 879 | |
2a83cc52 RH |
880 | /* Skip tokens until we have consumed an entire block, or until we |
881 | have consumed a non-nested ';'. */ | |
882 | ||
883 | static void | |
884 | c_parser_skip_to_end_of_block_or_statement (c_parser *parser) | |
885 | { | |
886 | unsigned nesting_depth = 0; | |
887 | bool save_error = parser->error; | |
888 | ||
889 | while (true) | |
890 | { | |
891 | c_token *token; | |
892 | ||
893 | /* Peek at the next token. */ | |
894 | token = c_parser_peek_token (parser); | |
895 | ||
896 | switch (token->type) | |
897 | { | |
898 | case CPP_EOF: | |
899 | return; | |
900 | ||
901 | case CPP_PRAGMA_EOL: | |
902 | if (parser->in_pragma) | |
903 | return; | |
904 | break; | |
905 | ||
906 | case CPP_SEMICOLON: | |
907 | /* If the next token is a ';', we have reached the | |
908 | end of the statement. */ | |
909 | if (!nesting_depth) | |
910 | { | |
911 | /* Consume the ';'. */ | |
912 | c_parser_consume_token (parser); | |
913 | goto finished; | |
914 | } | |
915 | break; | |
916 | ||
917 | case CPP_CLOSE_BRACE: | |
918 | /* If the next token is a non-nested '}', then we have | |
919 | reached the end of the current block. */ | |
920 | if (nesting_depth == 0 || --nesting_depth == 0) | |
921 | { | |
922 | c_parser_consume_token (parser); | |
923 | goto finished; | |
924 | } | |
925 | break; | |
926 | ||
927 | case CPP_OPEN_BRACE: | |
928 | /* If it the next token is a '{', then we are entering a new | |
929 | block. Consume the entire block. */ | |
930 | ++nesting_depth; | |
931 | break; | |
932 | ||
933 | case CPP_PRAGMA: | |
934 | /* If we see a pragma, consume the whole thing at once. We | |
935 | have some safeguards against consuming pragmas willy-nilly. | |
936 | Normally, we'd expect to be here with parser->error set, | |
937 | which disables these safeguards. But it's possible to get | |
938 | here for secondary error recovery, after parser->error has | |
939 | been cleared. */ | |
940 | c_parser_consume_pragma (parser); | |
941 | c_parser_skip_to_pragma_eol (parser); | |
942 | parser->error = save_error; | |
943 | continue; | |
9e33de05 RS |
944 | |
945 | default: | |
946 | break; | |
2a83cc52 RH |
947 | } |
948 | ||
949 | c_parser_consume_token (parser); | |
950 | } | |
951 | ||
952 | finished: | |
953 | parser->error = false; | |
954 | } | |
955 | ||
d2e796ad MLI |
956 | /* CPP's options (initialized by c-opts.c). */ |
957 | extern cpp_options *cpp_opts; | |
958 | ||
27bf414c JM |
959 | /* Save the warning flags which are controlled by __extension__. */ |
960 | ||
961 | static inline int | |
962 | disable_extension_diagnostics (void) | |
963 | { | |
964 | int ret = (pedantic | |
965 | | (warn_pointer_arith << 1) | |
966 | | (warn_traditional << 2) | |
d2e796ad | 967 | | (flag_iso << 3) |
24b97832 ILT |
968 | | (warn_long_long << 4) |
969 | | (warn_cxx_compat << 5)); | |
e3339d0f | 970 | cpp_opts->cpp_pedantic = pedantic = 0; |
27bf414c | 971 | warn_pointer_arith = 0; |
e3339d0f | 972 | cpp_opts->cpp_warn_traditional = warn_traditional = 0; |
27bf414c | 973 | flag_iso = 0; |
e3339d0f | 974 | cpp_opts->cpp_warn_long_long = warn_long_long = 0; |
24b97832 | 975 | warn_cxx_compat = 0; |
27bf414c JM |
976 | return ret; |
977 | } | |
978 | ||
979 | /* Restore the warning flags which are controlled by __extension__. | |
980 | FLAGS is the return value from disable_extension_diagnostics. */ | |
981 | ||
982 | static inline void | |
983 | restore_extension_diagnostics (int flags) | |
984 | { | |
e3339d0f | 985 | cpp_opts->cpp_pedantic = pedantic = flags & 1; |
27bf414c | 986 | warn_pointer_arith = (flags >> 1) & 1; |
e3339d0f | 987 | cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1; |
27bf414c | 988 | flag_iso = (flags >> 3) & 1; |
e3339d0f | 989 | cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1; |
24b97832 | 990 | warn_cxx_compat = (flags >> 5) & 1; |
27bf414c JM |
991 | } |
992 | ||
993 | /* Possibly kinds of declarator to parse. */ | |
994 | typedef enum c_dtr_syn { | |
995 | /* A normal declarator with an identifier. */ | |
996 | C_DTR_NORMAL, | |
997 | /* An abstract declarator (maybe empty). */ | |
998 | C_DTR_ABSTRACT, | |
999 | /* A parameter declarator: may be either, but after a type name does | |
1000 | not redeclare a typedef name as an identifier if it can | |
1001 | alternatively be interpreted as a typedef name; see DR#009, | |
1002 | applied in C90 TC1, omitted from C99 and reapplied in C99 TC2 | |
1003 | following DR#249. For example, given a typedef T, "int T" and | |
1004 | "int *T" are valid parameter declarations redeclaring T, while | |
1005 | "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are | |
1006 | abstract declarators rather than involving redundant parentheses; | |
1007 | the same applies with attributes inside the parentheses before | |
1008 | "T". */ | |
1009 | C_DTR_PARM | |
1010 | } c_dtr_syn; | |
1011 | ||
1012 | static void c_parser_external_declaration (c_parser *); | |
1013 | static void c_parser_asm_definition (c_parser *); | |
32912286 | 1014 | static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, |
f05b9d93 | 1015 | bool, bool, tree *); |
32912286 JM |
1016 | static void c_parser_static_assert_declaration_no_semi (c_parser *); |
1017 | static void c_parser_static_assert_declaration (c_parser *); | |
27bf414c JM |
1018 | static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool, |
1019 | bool); | |
1020 | static struct c_typespec c_parser_enum_specifier (c_parser *); | |
1021 | static struct c_typespec c_parser_struct_or_union_specifier (c_parser *); | |
1022 | static tree c_parser_struct_declaration (c_parser *); | |
1023 | static struct c_typespec c_parser_typeof_specifier (c_parser *); | |
1024 | static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn, | |
1025 | bool *); | |
1026 | static struct c_declarator *c_parser_direct_declarator (c_parser *, bool, | |
1027 | c_dtr_syn, bool *); | |
1028 | static struct c_declarator *c_parser_direct_declarator_inner (c_parser *, | |
1029 | bool, | |
1030 | struct c_declarator *); | |
1031 | static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree); | |
1032 | static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree); | |
1033 | static struct c_parm *c_parser_parameter_declaration (c_parser *, tree); | |
1034 | static tree c_parser_simple_asm_expr (c_parser *); | |
1035 | static tree c_parser_attributes (c_parser *); | |
1036 | static struct c_type_name *c_parser_type_name (c_parser *); | |
1037 | static struct c_expr c_parser_initializer (c_parser *); | |
1038 | static struct c_expr c_parser_braced_init (c_parser *, tree, bool); | |
a1e3b3d9 LB |
1039 | static void c_parser_initelt (c_parser *, struct obstack *); |
1040 | static void c_parser_initval (c_parser *, struct c_expr *, | |
1041 | struct obstack *); | |
27bf414c JM |
1042 | static tree c_parser_compound_statement (c_parser *); |
1043 | static void c_parser_compound_statement_nostart (c_parser *); | |
1044 | static void c_parser_label (c_parser *); | |
1045 | static void c_parser_statement (c_parser *); | |
1046 | static void c_parser_statement_after_labels (c_parser *); | |
1047 | static void c_parser_if_statement (c_parser *); | |
1048 | static void c_parser_switch_statement (c_parser *); | |
1049 | static void c_parser_while_statement (c_parser *); | |
1050 | static void c_parser_do_statement (c_parser *); | |
1051 | static void c_parser_for_statement (c_parser *); | |
1052 | static tree c_parser_asm_statement (c_parser *); | |
46bdb9cf | 1053 | static tree c_parser_asm_operands (c_parser *, bool); |
1c384bf1 | 1054 | static tree c_parser_asm_goto_operands (c_parser *); |
27bf414c JM |
1055 | static tree c_parser_asm_clobbers (c_parser *); |
1056 | static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *); | |
1057 | static struct c_expr c_parser_conditional_expression (c_parser *, | |
1058 | struct c_expr *); | |
1059 | static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *); | |
1060 | static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *); | |
1061 | static struct c_expr c_parser_unary_expression (c_parser *); | |
1062 | static struct c_expr c_parser_sizeof_expression (c_parser *); | |
1063 | static struct c_expr c_parser_alignof_expression (c_parser *); | |
1064 | static struct c_expr c_parser_postfix_expression (c_parser *); | |
1065 | static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *, | |
24b97832 ILT |
1066 | struct c_type_name *, |
1067 | location_t); | |
27bf414c | 1068 | static struct c_expr c_parser_postfix_expression_after_primary (c_parser *, |
c2255bc4 | 1069 | location_t loc, |
27bf414c JM |
1070 | struct c_expr); |
1071 | static struct c_expr c_parser_expression (c_parser *); | |
46bdb9cf | 1072 | static struct c_expr c_parser_expression_conv (c_parser *); |
bbbbb16a ILT |
1073 | static VEC(tree,gc) *c_parser_expr_list (c_parser *, bool, bool, |
1074 | VEC(tree,gc) **); | |
953ff289 DN |
1075 | static void c_parser_omp_construct (c_parser *); |
1076 | static void c_parser_omp_threadprivate (c_parser *); | |
1077 | static void c_parser_omp_barrier (c_parser *); | |
1078 | static void c_parser_omp_flush (c_parser *); | |
a68ab351 | 1079 | static void c_parser_omp_taskwait (c_parser *); |
27bf414c | 1080 | |
bc4071dd RH |
1081 | enum pragma_context { pragma_external, pragma_stmt, pragma_compound }; |
1082 | static bool c_parser_pragma (c_parser *, enum pragma_context); | |
1083 | ||
27bf414c JM |
1084 | /* These Objective-C parser functions are only ever called when |
1085 | compiling Objective-C. */ | |
c165dca7 | 1086 | static void c_parser_objc_class_definition (c_parser *, tree); |
27bf414c JM |
1087 | static void c_parser_objc_class_instance_variables (c_parser *); |
1088 | static void c_parser_objc_class_declaration (c_parser *); | |
1089 | static void c_parser_objc_alias_declaration (c_parser *); | |
c165dca7 | 1090 | static void c_parser_objc_protocol_definition (c_parser *, tree); |
249a82c4 | 1091 | static bool c_parser_objc_method_type (c_parser *); |
27bf414c JM |
1092 | static void c_parser_objc_method_definition (c_parser *); |
1093 | static void c_parser_objc_methodprotolist (c_parser *); | |
1094 | static void c_parser_objc_methodproto (c_parser *); | |
249a82c4 | 1095 | static tree c_parser_objc_method_decl (c_parser *, bool, tree *); |
27bf414c JM |
1096 | static tree c_parser_objc_type_name (c_parser *); |
1097 | static tree c_parser_objc_protocol_refs (c_parser *); | |
1098 | static void c_parser_objc_try_catch_statement (c_parser *); | |
1099 | static void c_parser_objc_synchronized_statement (c_parser *); | |
1100 | static tree c_parser_objc_selector (c_parser *); | |
1101 | static tree c_parser_objc_selector_arg (c_parser *); | |
1102 | static tree c_parser_objc_receiver (c_parser *); | |
1103 | static tree c_parser_objc_message_args (c_parser *); | |
1104 | static tree c_parser_objc_keywordexpr (c_parser *); | |
f614132b | 1105 | static void c_parser_objc_at_property_declaration (c_parser *); |
da57d1b9 NP |
1106 | static void c_parser_objc_at_synthesize_declaration (c_parser *); |
1107 | static void c_parser_objc_at_dynamic_declaration (c_parser *); | |
668ea4b1 | 1108 | static bool c_parser_objc_diagnose_bad_element_prefix |
c165dca7 | 1109 | (c_parser *, struct c_declspecs *); |
27bf414c JM |
1110 | |
1111 | /* Parse a translation unit (C90 6.7, C99 6.9). | |
1112 | ||
1113 | translation-unit: | |
1114 | external-declarations | |
1115 | ||
1116 | external-declarations: | |
1117 | external-declaration | |
1118 | external-declarations external-declaration | |
1119 | ||
1120 | GNU extensions: | |
1121 | ||
1122 | translation-unit: | |
1123 | empty | |
1124 | */ | |
1125 | ||
1126 | static void | |
1127 | c_parser_translation_unit (c_parser *parser) | |
1128 | { | |
1129 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
1130 | { | |
b8698a0f | 1131 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 1132 | "ISO C forbids an empty translation unit"); |
27bf414c JM |
1133 | } |
1134 | else | |
1135 | { | |
1136 | void *obstack_position = obstack_alloc (&parser_obstack, 0); | |
6ec637a4 | 1137 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
1138 | do |
1139 | { | |
1140 | ggc_collect (); | |
1141 | c_parser_external_declaration (parser); | |
1142 | obstack_free (&parser_obstack, obstack_position); | |
1143 | } | |
1144 | while (c_parser_next_token_is_not (parser, CPP_EOF)); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | /* Parse an external declaration (C90 6.7, C99 6.9). | |
1149 | ||
1150 | external-declaration: | |
1151 | function-definition | |
1152 | declaration | |
1153 | ||
1154 | GNU extensions: | |
1155 | ||
1156 | external-declaration: | |
1157 | asm-definition | |
1158 | ; | |
1159 | __extension__ external-declaration | |
1160 | ||
1161 | Objective-C: | |
1162 | ||
1163 | external-declaration: | |
1164 | objc-class-definition | |
1165 | objc-class-declaration | |
1166 | objc-alias-declaration | |
1167 | objc-protocol-definition | |
1168 | objc-method-definition | |
1169 | @end | |
1170 | */ | |
1171 | ||
1172 | static void | |
1173 | c_parser_external_declaration (c_parser *parser) | |
1174 | { | |
1175 | int ext; | |
1176 | switch (c_parser_peek_token (parser)->type) | |
1177 | { | |
1178 | case CPP_KEYWORD: | |
1179 | switch (c_parser_peek_token (parser)->keyword) | |
1180 | { | |
1181 | case RID_EXTENSION: | |
1182 | ext = disable_extension_diagnostics (); | |
1183 | c_parser_consume_token (parser); | |
1184 | c_parser_external_declaration (parser); | |
1185 | restore_extension_diagnostics (ext); | |
1186 | break; | |
1187 | case RID_ASM: | |
1188 | c_parser_asm_definition (parser); | |
1189 | break; | |
1190 | case RID_AT_INTERFACE: | |
1191 | case RID_AT_IMPLEMENTATION: | |
1192 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1193 | c_parser_objc_class_definition (parser, NULL_TREE); |
27bf414c | 1194 | break; |
49b91f05 | 1195 | case RID_AT_CLASS: |
27bf414c JM |
1196 | gcc_assert (c_dialect_objc ()); |
1197 | c_parser_objc_class_declaration (parser); | |
1198 | break; | |
1199 | case RID_AT_ALIAS: | |
1200 | gcc_assert (c_dialect_objc ()); | |
1201 | c_parser_objc_alias_declaration (parser); | |
1202 | break; | |
1203 | case RID_AT_PROTOCOL: | |
1204 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1205 | c_parser_objc_protocol_definition (parser, NULL_TREE); |
27bf414c | 1206 | break; |
668ea4b1 IS |
1207 | case RID_AT_PROPERTY: |
1208 | gcc_assert (c_dialect_objc ()); | |
f614132b | 1209 | c_parser_objc_at_property_declaration (parser); |
668ea4b1 | 1210 | break; |
da57d1b9 NP |
1211 | case RID_AT_SYNTHESIZE: |
1212 | gcc_assert (c_dialect_objc ()); | |
1213 | c_parser_objc_at_synthesize_declaration (parser); | |
1214 | break; | |
1215 | case RID_AT_DYNAMIC: | |
1216 | gcc_assert (c_dialect_objc ()); | |
1217 | c_parser_objc_at_dynamic_declaration (parser); | |
1218 | break; | |
27bf414c JM |
1219 | case RID_AT_END: |
1220 | gcc_assert (c_dialect_objc ()); | |
1221 | c_parser_consume_token (parser); | |
1222 | objc_finish_implementation (); | |
1223 | break; | |
1224 | default: | |
1225 | goto decl_or_fndef; | |
1226 | } | |
1227 | break; | |
1228 | case CPP_SEMICOLON: | |
b8698a0f | 1229 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 1230 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
1231 | c_parser_consume_token (parser); |
1232 | break; | |
bc4071dd | 1233 | case CPP_PRAGMA: |
6ec637a4 | 1234 | mark_valid_location_for_stdc_pragma (true); |
bc4071dd | 1235 | c_parser_pragma (parser, pragma_external); |
6ec637a4 | 1236 | mark_valid_location_for_stdc_pragma (false); |
bc4071dd | 1237 | break; |
27bf414c JM |
1238 | case CPP_PLUS: |
1239 | case CPP_MINUS: | |
1240 | if (c_dialect_objc ()) | |
1241 | { | |
1242 | c_parser_objc_method_definition (parser); | |
1243 | break; | |
1244 | } | |
1245 | /* Else fall through, and yield a syntax error trying to parse | |
1246 | as a declaration or function definition. */ | |
1247 | default: | |
1248 | decl_or_fndef: | |
c165dca7 IS |
1249 | /* A declaration or a function definition (or, in Objective-C, |
1250 | an @interface or @protocol with prefix attributes). We can | |
1251 | only tell which after parsing the declaration specifiers, if | |
1252 | any, and the first declarator. */ | |
f05b9d93 | 1253 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, NULL); |
27bf414c JM |
1254 | break; |
1255 | } | |
1256 | } | |
1257 | ||
1258 | /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99 | |
1259 | 6.7, 6.9.1). If FNDEF_OK is true, a function definition is | |
1260 | accepted; otherwise (old-style parameter declarations) only other | |
32912286 JM |
1261 | declarations are accepted. If STATIC_ASSERT_OK is true, a static |
1262 | assertion is accepted; otherwise (old-style parameter declarations) | |
1263 | it is not. If NESTED is true, we are inside a function or parsing | |
1264 | old-style parameter declarations; any functions encountered are | |
1265 | nested functions and declaration specifiers are required; otherwise | |
1266 | we are at top level and functions are normal functions and | |
1267 | declaration specifiers may be optional. If EMPTY_OK is true, empty | |
1268 | declarations are OK (subject to all other constraints); otherwise | |
1269 | (old-style parameter declarations) they are diagnosed. If | |
1270 | START_ATTR_OK is true, the declaration specifiers may start with | |
1271 | attributes; otherwise they may not. | |
f05b9d93 NP |
1272 | OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed |
1273 | declaration when parsing an Objective-C foreach statement. | |
27bf414c JM |
1274 | |
1275 | declaration: | |
1276 | declaration-specifiers init-declarator-list[opt] ; | |
32912286 | 1277 | static_assert-declaration |
27bf414c JM |
1278 | |
1279 | function-definition: | |
1280 | declaration-specifiers[opt] declarator declaration-list[opt] | |
1281 | compound-statement | |
1282 | ||
1283 | declaration-list: | |
1284 | declaration | |
1285 | declaration-list declaration | |
1286 | ||
1287 | init-declarator-list: | |
1288 | init-declarator | |
1289 | init-declarator-list , init-declarator | |
1290 | ||
1291 | init-declarator: | |
1292 | declarator simple-asm-expr[opt] attributes[opt] | |
1293 | declarator simple-asm-expr[opt] attributes[opt] = initializer | |
1294 | ||
1295 | GNU extensions: | |
1296 | ||
1297 | nested-function-definition: | |
1298 | declaration-specifiers declarator declaration-list[opt] | |
1299 | compound-statement | |
1300 | ||
c165dca7 IS |
1301 | Objective-C: |
1302 | attributes objc-class-definition | |
1303 | attributes objc-category-definition | |
1304 | attributes objc-protocol-definition | |
1305 | ||
27bf414c JM |
1306 | The simple-asm-expr and attributes are GNU extensions. |
1307 | ||
1308 | This function does not handle __extension__; that is handled in its | |
1309 | callers. ??? Following the old parser, __extension__ may start | |
1310 | external declarations, declarations in functions and declarations | |
1311 | at the start of "for" loops, but not old-style parameter | |
1312 | declarations. | |
1313 | ||
1314 | C99 requires declaration specifiers in a function definition; the | |
1315 | absence is diagnosed through the diagnosis of implicit int. In GNU | |
1316 | C we also allow but diagnose declarations without declaration | |
1317 | specifiers, but only at top level (elsewhere they conflict with | |
953ff289 | 1318 | other syntax). |
b8698a0f | 1319 | |
f05b9d93 NP |
1320 | In Objective-C, declarations of the looping variable in a foreach |
1321 | statement are exceptionally terminated by 'in' (for example, 'for | |
1322 | (NSObject *object in array) { ... }'). | |
1323 | ||
953ff289 | 1324 | OpenMP: |
b8698a0f | 1325 | |
953ff289 DN |
1326 | declaration: |
1327 | threadprivate-directive */ | |
27bf414c JM |
1328 | |
1329 | static void | |
32912286 JM |
1330 | c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, |
1331 | bool static_assert_ok, bool empty_ok, | |
f05b9d93 NP |
1332 | bool nested, bool start_attr_ok, |
1333 | tree *objc_foreach_object_declaration) | |
27bf414c JM |
1334 | { |
1335 | struct c_declspecs *specs; | |
1336 | tree prefix_attrs; | |
1337 | tree all_prefix_attrs; | |
1338 | bool diagnosed_no_specs = false; | |
c7412148 | 1339 | location_t here = c_parser_peek_token (parser)->location; |
bc4071dd | 1340 | |
32912286 JM |
1341 | if (static_assert_ok |
1342 | && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) | |
1343 | { | |
1344 | c_parser_static_assert_declaration (parser); | |
1345 | return; | |
1346 | } | |
27bf414c JM |
1347 | specs = build_null_declspecs (); |
1348 | c_parser_declspecs (parser, specs, true, true, start_attr_ok); | |
1349 | if (parser->error) | |
1350 | { | |
1351 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1352 | return; | |
1353 | } | |
1354 | if (nested && !specs->declspecs_seen_p) | |
1355 | { | |
1356 | c_parser_error (parser, "expected declaration specifiers"); | |
1357 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1358 | return; | |
1359 | } | |
1360 | finish_declspecs (specs); | |
1361 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1362 | { | |
1363 | if (empty_ok) | |
1364 | shadow_tag (specs); | |
1365 | else | |
1366 | { | |
1367 | shadow_tag_warned (specs, 1); | |
509c9d60 | 1368 | pedwarn (here, 0, "empty declaration"); |
27bf414c JM |
1369 | } |
1370 | c_parser_consume_token (parser); | |
1371 | return; | |
1372 | } | |
c165dca7 IS |
1373 | else if (c_dialect_objc ()) |
1374 | { | |
f7e71da5 IS |
1375 | /* Prefix attributes are an error on method decls. */ |
1376 | switch (c_parser_peek_token (parser)->type) | |
1377 | { | |
1378 | case CPP_PLUS: | |
1379 | case CPP_MINUS: | |
1380 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1381 | return; | |
1382 | if (specs->attrs) | |
1383 | { | |
1384 | warning_at (c_parser_peek_token (parser)->location, | |
1385 | OPT_Wattributes, | |
1386 | "prefix attributes are ignored for methods"); | |
1387 | specs->attrs = NULL_TREE; | |
1388 | } | |
1389 | if (fndef_ok) | |
1390 | c_parser_objc_method_definition (parser); | |
1391 | else | |
1392 | c_parser_objc_methodproto (parser); | |
1393 | return; | |
1394 | break; | |
1395 | default: | |
1396 | break; | |
1397 | } | |
c165dca7 IS |
1398 | /* This is where we parse 'attributes @interface ...', |
1399 | 'attributes @implementation ...', 'attributes @protocol ...' | |
1400 | (where attributes could be, for example, __attribute__ | |
1401 | ((deprecated)). | |
1402 | */ | |
1403 | switch (c_parser_peek_token (parser)->keyword) | |
1404 | { | |
1405 | case RID_AT_INTERFACE: | |
1406 | { | |
1407 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1408 | return; | |
1409 | c_parser_objc_class_definition (parser, specs->attrs); | |
1410 | return; | |
1411 | } | |
1412 | break; | |
1413 | case RID_AT_IMPLEMENTATION: | |
1414 | { | |
1415 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1416 | return; | |
1417 | if (specs->attrs) | |
1418 | { | |
1419 | warning_at (c_parser_peek_token (parser)->location, | |
1420 | OPT_Wattributes, | |
1421 | "prefix attributes are ignored for implementations"); | |
1422 | specs->attrs = NULL_TREE; | |
1423 | } | |
1424 | c_parser_objc_class_definition (parser, NULL_TREE); | |
1425 | return; | |
1426 | } | |
1427 | break; | |
1428 | case RID_AT_PROTOCOL: | |
1429 | { | |
1430 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1431 | return; | |
1432 | c_parser_objc_protocol_definition (parser, specs->attrs); | |
1433 | return; | |
1434 | } | |
1435 | break; | |
668ea4b1 IS |
1436 | case RID_AT_ALIAS: |
1437 | case RID_AT_CLASS: | |
1438 | case RID_AT_END: | |
1439 | case RID_AT_PROPERTY: | |
1440 | if (specs->attrs) | |
1441 | { | |
1442 | c_parser_error (parser, | |
1443 | "attributes may not be specified before" ); | |
1444 | specs->attrs = NULL; | |
1445 | } | |
1446 | break; | |
c165dca7 IS |
1447 | default: |
1448 | break; | |
1449 | } | |
1450 | } | |
1451 | ||
27bf414c JM |
1452 | pending_xref_error (); |
1453 | prefix_attrs = specs->attrs; | |
1454 | all_prefix_attrs = prefix_attrs; | |
1455 | specs->attrs = NULL_TREE; | |
1456 | while (true) | |
1457 | { | |
1458 | struct c_declarator *declarator; | |
1459 | bool dummy = false; | |
1460 | tree fnbody; | |
1461 | /* Declaring either one or more declarators (in which case we | |
1462 | should diagnose if there were no declaration specifiers) or a | |
1463 | function definition (in which case the diagnostic for | |
1464 | implicit int suffices). */ | |
9e5b2115 PB |
1465 | declarator = c_parser_declarator (parser, |
1466 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
1467 | C_DTR_NORMAL, &dummy); |
1468 | if (declarator == NULL) | |
1469 | { | |
1470 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1471 | return; | |
1472 | } | |
1473 | if (c_parser_next_token_is (parser, CPP_EQ) | |
1474 | || c_parser_next_token_is (parser, CPP_COMMA) | |
1475 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
1476 | || c_parser_next_token_is_keyword (parser, RID_ASM) | |
f05b9d93 NP |
1477 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE) |
1478 | || c_parser_next_token_is_keyword (parser, RID_IN)) | |
27bf414c JM |
1479 | { |
1480 | tree asm_name = NULL_TREE; | |
1481 | tree postfix_attrs = NULL_TREE; | |
1482 | if (!diagnosed_no_specs && !specs->declspecs_seen_p) | |
1483 | { | |
1484 | diagnosed_no_specs = true; | |
509c9d60 | 1485 | pedwarn (here, 0, "data definition has no type or storage class"); |
27bf414c JM |
1486 | } |
1487 | /* Having seen a data definition, there cannot now be a | |
1488 | function definition. */ | |
1489 | fndef_ok = false; | |
1490 | if (c_parser_next_token_is_keyword (parser, RID_ASM)) | |
1491 | asm_name = c_parser_simple_asm_expr (parser); | |
1492 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1493 | postfix_attrs = c_parser_attributes (parser); | |
1494 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
1495 | { | |
1496 | tree d; | |
1497 | struct c_expr init; | |
c2255bc4 | 1498 | location_t init_loc; |
27bf414c JM |
1499 | c_parser_consume_token (parser); |
1500 | /* The declaration of the variable is in effect while | |
1501 | its initializer is parsed. */ | |
1502 | d = start_decl (declarator, specs, true, | |
1503 | chainon (postfix_attrs, all_prefix_attrs)); | |
1504 | if (!d) | |
1505 | d = error_mark_node; | |
1506 | start_init (d, asm_name, global_bindings_p ()); | |
c2255bc4 | 1507 | init_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
1508 | init = c_parser_initializer (parser); |
1509 | finish_init (); | |
1510 | if (d != error_mark_node) | |
1511 | { | |
1512 | maybe_warn_string_init (TREE_TYPE (d), init); | |
c2255bc4 AH |
1513 | finish_decl (d, init_loc, init.value, |
1514 | init.original_type, asm_name); | |
27bf414c JM |
1515 | } |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | tree d = start_decl (declarator, specs, false, | |
1520 | chainon (postfix_attrs, | |
1521 | all_prefix_attrs)); | |
1522 | if (d) | |
c2255bc4 | 1523 | finish_decl (d, UNKNOWN_LOCATION, NULL_TREE, |
f05b9d93 NP |
1524 | NULL_TREE, asm_name); |
1525 | ||
1526 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
1527 | { | |
1528 | if (d) | |
1529 | *objc_foreach_object_declaration = d; | |
1530 | else | |
1531 | *objc_foreach_object_declaration = error_mark_node; | |
1532 | } | |
27bf414c JM |
1533 | } |
1534 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
1535 | { | |
1536 | c_parser_consume_token (parser); | |
1537 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1538 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
1539 | prefix_attrs); | |
1540 | else | |
1541 | all_prefix_attrs = prefix_attrs; | |
1542 | continue; | |
1543 | } | |
1544 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1545 | { | |
1546 | c_parser_consume_token (parser); | |
1547 | return; | |
1548 | } | |
f05b9d93 NP |
1549 | else if (c_parser_next_token_is_keyword (parser, RID_IN)) |
1550 | { | |
1551 | /* This can only happen in Objective-C: we found the | |
1552 | 'in' that terminates the declaration inside an | |
1553 | Objective-C foreach statement. Do not consume the | |
1554 | token, so that the caller can use it to determine | |
1555 | that this indeed is a foreach context. */ | |
1556 | return; | |
1557 | } | |
27bf414c JM |
1558 | else |
1559 | { | |
1560 | c_parser_error (parser, "expected %<,%> or %<;%>"); | |
1561 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1562 | return; | |
1563 | } | |
1564 | } | |
1565 | else if (!fndef_ok) | |
1566 | { | |
1567 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, " | |
1568 | "%<asm%> or %<__attribute__%>"); | |
1569 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1570 | return; | |
1571 | } | |
1572 | /* Function definition (nested or otherwise). */ | |
1573 | if (nested) | |
1574 | { | |
509c9d60 | 1575 | pedwarn (here, OPT_pedantic, "ISO C forbids nested functions"); |
d2784db4 | 1576 | c_push_function_context (); |
27bf414c JM |
1577 | } |
1578 | if (!start_function (specs, declarator, all_prefix_attrs)) | |
1579 | { | |
1580 | /* This can appear in many cases looking nothing like a | |
1581 | function definition, so we don't give a more specific | |
1582 | error suggesting there was one. */ | |
1583 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> " | |
1584 | "or %<__attribute__%>"); | |
1585 | if (nested) | |
d2784db4 | 1586 | c_pop_function_context (); |
27bf414c JM |
1587 | break; |
1588 | } | |
1589 | /* Parse old-style parameter declarations. ??? Attributes are | |
1590 | not allowed to start declaration specifiers here because of a | |
1591 | syntax conflict between a function declaration with attribute | |
1592 | suffix and a function definition with an attribute prefix on | |
1593 | first old-style parameter declaration. Following the old | |
1594 | parser, they are not accepted on subsequent old-style | |
1595 | parameter declarations either. However, there is no | |
1596 | ambiguity after the first declaration, nor indeed on the | |
1597 | first as long as we don't allow postfix attributes after a | |
1598 | declarator with a nonempty identifier list in a definition; | |
1599 | and postfix attributes have never been accepted here in | |
1600 | function definitions either. */ | |
1601 | while (c_parser_next_token_is_not (parser, CPP_EOF) | |
1602 | && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE)) | |
32912286 | 1603 | c_parser_declaration_or_fndef (parser, false, false, false, |
f05b9d93 | 1604 | true, false, NULL); |
27bf414c | 1605 | store_parm_decls (); |
1751ecd6 AH |
1606 | DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus |
1607 | = c_parser_peek_token (parser)->location; | |
27bf414c JM |
1608 | fnbody = c_parser_compound_statement (parser); |
1609 | if (nested) | |
1610 | { | |
1611 | tree decl = current_function_decl; | |
9f62cb92 JJ |
1612 | /* Mark nested functions as needing static-chain initially. |
1613 | lower_nested_functions will recompute it but the | |
1614 | DECL_STATIC_CHAIN flag is also used before that happens, | |
1615 | by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */ | |
1616 | DECL_STATIC_CHAIN (decl) = 1; | |
27bf414c JM |
1617 | add_stmt (fnbody); |
1618 | finish_function (); | |
d2784db4 | 1619 | c_pop_function_context (); |
c2255bc4 | 1620 | add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl)); |
27bf414c JM |
1621 | } |
1622 | else | |
1623 | { | |
1624 | add_stmt (fnbody); | |
1625 | finish_function (); | |
1626 | } | |
1627 | break; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | /* Parse an asm-definition (asm() outside a function body). This is a | |
1632 | GNU extension. | |
1633 | ||
1634 | asm-definition: | |
1635 | simple-asm-expr ; | |
1636 | */ | |
1637 | ||
1638 | static void | |
1639 | c_parser_asm_definition (c_parser *parser) | |
1640 | { | |
1641 | tree asm_str = c_parser_simple_asm_expr (parser); | |
27bf414c | 1642 | if (asm_str) |
474eccc6 | 1643 | cgraph_add_asm_node (asm_str); |
27bf414c JM |
1644 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
1645 | } | |
1646 | ||
32912286 JM |
1647 | /* Parse a static assertion (C1X N1425 6.7.10). |
1648 | ||
1649 | static_assert-declaration: | |
1650 | static_assert-declaration-no-semi ; | |
1651 | */ | |
1652 | ||
1653 | static void | |
1654 | c_parser_static_assert_declaration (c_parser *parser) | |
1655 | { | |
1656 | c_parser_static_assert_declaration_no_semi (parser); | |
1657 | if (parser->error | |
1658 | || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
1659 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1660 | } | |
1661 | ||
1662 | /* Parse a static assertion (C1X N1425 6.7.10), without the trailing | |
1663 | semicolon. | |
1664 | ||
1665 | static_assert-declaration-no-semi: | |
1666 | _Static_assert ( constant-expression , string-literal ) | |
1667 | */ | |
1668 | ||
1669 | static void | |
1670 | c_parser_static_assert_declaration_no_semi (c_parser *parser) | |
1671 | { | |
1672 | location_t assert_loc, value_loc; | |
1673 | tree value; | |
1674 | tree string; | |
1675 | ||
1676 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)); | |
1677 | assert_loc = c_parser_peek_token (parser)->location; | |
1678 | if (!flag_isoc1x) | |
1679 | { | |
1680 | if (flag_isoc99) | |
1681 | pedwarn (assert_loc, OPT_pedantic, | |
1682 | "ISO C99 does not support %<_Static_assert%>"); | |
1683 | else | |
1684 | pedwarn (assert_loc, OPT_pedantic, | |
1685 | "ISO C90 does not support %<_Static_assert%>"); | |
1686 | } | |
1687 | c_parser_consume_token (parser); | |
1688 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
1689 | return; | |
1690 | value_loc = c_parser_peek_token (parser)->location; | |
1691 | value = c_parser_expr_no_commas (parser, NULL).value; | |
1692 | parser->lex_untranslated_string = true; | |
1693 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
1694 | { | |
1695 | parser->lex_untranslated_string = false; | |
1696 | return; | |
1697 | } | |
1698 | switch (c_parser_peek_token (parser)->type) | |
1699 | { | |
1700 | case CPP_STRING: | |
1701 | case CPP_STRING16: | |
1702 | case CPP_STRING32: | |
1703 | case CPP_WSTRING: | |
1704 | case CPP_UTF8STRING: | |
1705 | string = c_parser_peek_token (parser)->value; | |
1706 | c_parser_consume_token (parser); | |
1707 | parser->lex_untranslated_string = false; | |
1708 | break; | |
1709 | default: | |
1710 | c_parser_error (parser, "expected string literal"); | |
1711 | parser->lex_untranslated_string = false; | |
1712 | return; | |
1713 | } | |
1714 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
1715 | ||
1716 | if (!INTEGRAL_TYPE_P (TREE_TYPE (value))) | |
1717 | { | |
1718 | error_at (value_loc, "expression in static assertion is not an integer"); | |
1719 | return; | |
1720 | } | |
1721 | if (TREE_CODE (value) != INTEGER_CST) | |
1722 | { | |
1723 | value = c_fully_fold (value, false, NULL); | |
1724 | if (TREE_CODE (value) == INTEGER_CST) | |
1725 | pedwarn (value_loc, OPT_pedantic, "expression in static assertion " | |
1726 | "is not an integer constant expression"); | |
1727 | } | |
1728 | if (TREE_CODE (value) != INTEGER_CST) | |
1729 | { | |
1730 | error_at (value_loc, "expression in static assertion is not constant"); | |
1731 | return; | |
1732 | } | |
1733 | constant_expression_warning (value); | |
1734 | if (integer_zerop (value)) | |
1735 | error_at (assert_loc, "static assertion failed: %E", string); | |
1736 | } | |
1737 | ||
27bf414c JM |
1738 | /* Parse some declaration specifiers (possibly none) (C90 6.5, C99 |
1739 | 6.7), adding them to SPECS (which may already include some). | |
1740 | Storage class specifiers are accepted iff SCSPEC_OK; type | |
1741 | specifiers are accepted iff TYPESPEC_OK; attributes are accepted at | |
1742 | the start iff START_ATTR_OK. | |
1743 | ||
1744 | declaration-specifiers: | |
1745 | storage-class-specifier declaration-specifiers[opt] | |
1746 | type-specifier declaration-specifiers[opt] | |
1747 | type-qualifier declaration-specifiers[opt] | |
1748 | function-specifier declaration-specifiers[opt] | |
1749 | ||
1750 | Function specifiers (inline) are from C99, and are currently | |
1751 | handled as storage class specifiers, as is __thread. | |
1752 | ||
1753 | C90 6.5.1, C99 6.7.1: | |
1754 | storage-class-specifier: | |
1755 | typedef | |
1756 | extern | |
1757 | static | |
1758 | auto | |
1759 | register | |
1760 | ||
1761 | C99 6.7.4: | |
1762 | function-specifier: | |
1763 | inline | |
1764 | ||
1765 | C90 6.5.2, C99 6.7.2: | |
1766 | type-specifier: | |
1767 | void | |
1768 | char | |
1769 | short | |
1770 | int | |
1771 | long | |
1772 | float | |
1773 | double | |
1774 | signed | |
1775 | unsigned | |
1776 | _Bool | |
1777 | _Complex | |
1778 | [_Imaginary removed in C99 TC2] | |
1779 | struct-or-union-specifier | |
1780 | enum-specifier | |
1781 | typedef-name | |
1782 | ||
1783 | (_Bool and _Complex are new in C99.) | |
1784 | ||
1785 | C90 6.5.3, C99 6.7.3: | |
1786 | ||
1787 | type-qualifier: | |
1788 | const | |
1789 | restrict | |
1790 | volatile | |
36c5e70a | 1791 | address-space-qualifier |
27bf414c JM |
1792 | |
1793 | (restrict is new in C99.) | |
1794 | ||
1795 | GNU extensions: | |
1796 | ||
1797 | declaration-specifiers: | |
1798 | attributes declaration-specifiers[opt] | |
1799 | ||
36c5e70a BE |
1800 | type-qualifier: |
1801 | address-space | |
1802 | ||
1803 | address-space: | |
1804 | identifier recognized by the target | |
1805 | ||
27bf414c JM |
1806 | storage-class-specifier: |
1807 | __thread | |
1808 | ||
1809 | type-specifier: | |
1810 | typeof-specifier | |
a6766312 | 1811 | __int128 |
9a8ce21f JG |
1812 | _Decimal32 |
1813 | _Decimal64 | |
1814 | _Decimal128 | |
ab22c1fa CF |
1815 | _Fract |
1816 | _Accum | |
1817 | _Sat | |
1818 | ||
1819 | (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037: | |
1820 | http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf) | |
27bf414c JM |
1821 | |
1822 | Objective-C: | |
1823 | ||
1824 | type-specifier: | |
1825 | class-name objc-protocol-refs[opt] | |
1826 | typedef-name objc-protocol-refs | |
1827 | objc-protocol-refs | |
1828 | */ | |
1829 | ||
1830 | static void | |
1831 | c_parser_declspecs (c_parser *parser, struct c_declspecs *specs, | |
1832 | bool scspec_ok, bool typespec_ok, bool start_attr_ok) | |
1833 | { | |
1834 | bool attrs_ok = start_attr_ok; | |
9e5b2115 | 1835 | bool seen_type = specs->typespec_kind != ctsk_none; |
27bf414c JM |
1836 | while (c_parser_next_token_is (parser, CPP_NAME) |
1837 | || c_parser_next_token_is (parser, CPP_KEYWORD) | |
1838 | || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS))) | |
1839 | { | |
1840 | struct c_typespec t; | |
1841 | tree attrs; | |
dc491a25 | 1842 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
1843 | if (c_parser_next_token_is (parser, CPP_NAME)) |
1844 | { | |
1845 | tree value = c_parser_peek_token (parser)->value; | |
1846 | c_id_kind kind = c_parser_peek_token (parser)->id_kind; | |
36c5e70a BE |
1847 | |
1848 | if (kind == C_ID_ADDRSPACE) | |
1849 | { | |
1850 | addr_space_t as | |
1851 | = c_parser_peek_token (parser)->keyword - RID_FIRST_ADDR_SPACE; | |
1852 | declspecs_add_addrspace (specs, as); | |
1853 | c_parser_consume_token (parser); | |
1854 | attrs_ok = true; | |
1855 | continue; | |
1856 | } | |
1857 | ||
27bf414c JM |
1858 | /* This finishes the specifiers unless a type name is OK, it |
1859 | is declared as a type name and a type name hasn't yet | |
1860 | been seen. */ | |
1861 | if (!typespec_ok || seen_type | |
1862 | || (kind != C_ID_TYPENAME && kind != C_ID_CLASSNAME)) | |
1863 | break; | |
1864 | c_parser_consume_token (parser); | |
1865 | seen_type = true; | |
1866 | attrs_ok = true; | |
1867 | if (kind == C_ID_TYPENAME | |
1868 | && (!c_dialect_objc () | |
1869 | || c_parser_next_token_is_not (parser, CPP_LESS))) | |
1870 | { | |
1871 | t.kind = ctsk_typedef; | |
1872 | /* For a typedef name, record the meaning, not the name. | |
1873 | In case of 'foo foo, bar;'. */ | |
1874 | t.spec = lookup_name (value); | |
928c19bb JM |
1875 | t.expr = NULL_TREE; |
1876 | t.expr_const_operands = true; | |
27bf414c JM |
1877 | } |
1878 | else | |
1879 | { | |
1880 | tree proto = NULL_TREE; | |
1881 | gcc_assert (c_dialect_objc ()); | |
1882 | t.kind = ctsk_objc; | |
1883 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
1884 | proto = c_parser_objc_protocol_refs (parser); | |
1885 | t.spec = objc_get_protocol_qualified_type (value, proto); | |
928c19bb JM |
1886 | t.expr = NULL_TREE; |
1887 | t.expr_const_operands = true; | |
27bf414c | 1888 | } |
dc491a25 | 1889 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1890 | continue; |
1891 | } | |
1892 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
1893 | { | |
1894 | /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - | |
1895 | nisse@lysator.liu.se. */ | |
1896 | tree proto; | |
1897 | gcc_assert (c_dialect_objc ()); | |
1898 | if (!typespec_ok || seen_type) | |
1899 | break; | |
1900 | proto = c_parser_objc_protocol_refs (parser); | |
1901 | t.kind = ctsk_objc; | |
1902 | t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto); | |
928c19bb JM |
1903 | t.expr = NULL_TREE; |
1904 | t.expr_const_operands = true; | |
dc491a25 | 1905 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1906 | continue; |
1907 | } | |
1908 | gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD)); | |
1909 | switch (c_parser_peek_token (parser)->keyword) | |
1910 | { | |
1911 | case RID_STATIC: | |
1912 | case RID_EXTERN: | |
1913 | case RID_REGISTER: | |
1914 | case RID_TYPEDEF: | |
1915 | case RID_INLINE: | |
1916 | case RID_AUTO: | |
1917 | case RID_THREAD: | |
1918 | if (!scspec_ok) | |
1919 | goto out; | |
1920 | attrs_ok = true; | |
1921 | /* TODO: Distinguish between function specifiers (inline) | |
1922 | and storage class specifiers, either here or in | |
1923 | declspecs_add_scspec. */ | |
1924 | declspecs_add_scspec (specs, c_parser_peek_token (parser)->value); | |
1925 | c_parser_consume_token (parser); | |
1926 | break; | |
1927 | case RID_UNSIGNED: | |
1928 | case RID_LONG: | |
a6766312 | 1929 | case RID_INT128: |
27bf414c JM |
1930 | case RID_SHORT: |
1931 | case RID_SIGNED: | |
1932 | case RID_COMPLEX: | |
1933 | case RID_INT: | |
1934 | case RID_CHAR: | |
1935 | case RID_FLOAT: | |
1936 | case RID_DOUBLE: | |
1937 | case RID_VOID: | |
9a8ce21f JG |
1938 | case RID_DFLOAT32: |
1939 | case RID_DFLOAT64: | |
1940 | case RID_DFLOAT128: | |
27bf414c | 1941 | case RID_BOOL: |
ab22c1fa CF |
1942 | case RID_FRACT: |
1943 | case RID_ACCUM: | |
1944 | case RID_SAT: | |
27bf414c JM |
1945 | if (!typespec_ok) |
1946 | goto out; | |
1947 | attrs_ok = true; | |
1948 | seen_type = true; | |
0bacb8c7 TT |
1949 | if (c_dialect_objc ()) |
1950 | parser->objc_need_raw_identifier = true; | |
27bf414c JM |
1951 | t.kind = ctsk_resword; |
1952 | t.spec = c_parser_peek_token (parser)->value; | |
928c19bb JM |
1953 | t.expr = NULL_TREE; |
1954 | t.expr_const_operands = true; | |
dc491a25 | 1955 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1956 | c_parser_consume_token (parser); |
1957 | break; | |
1958 | case RID_ENUM: | |
1959 | if (!typespec_ok) | |
1960 | goto out; | |
1961 | attrs_ok = true; | |
1962 | seen_type = true; | |
1963 | t = c_parser_enum_specifier (parser); | |
dc491a25 | 1964 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1965 | break; |
1966 | case RID_STRUCT: | |
1967 | case RID_UNION: | |
1968 | if (!typespec_ok) | |
1969 | goto out; | |
1970 | attrs_ok = true; | |
1971 | seen_type = true; | |
1972 | t = c_parser_struct_or_union_specifier (parser); | |
dab71827 | 1973 | invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec); |
dc491a25 | 1974 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1975 | break; |
1976 | case RID_TYPEOF: | |
1977 | /* ??? The old parser rejected typeof after other type | |
1978 | specifiers, but is a syntax error the best way of | |
1979 | handling this? */ | |
1980 | if (!typespec_ok || seen_type) | |
1981 | goto out; | |
1982 | attrs_ok = true; | |
1983 | seen_type = true; | |
1984 | t = c_parser_typeof_specifier (parser); | |
dc491a25 | 1985 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
1986 | break; |
1987 | case RID_CONST: | |
1988 | case RID_VOLATILE: | |
1989 | case RID_RESTRICT: | |
1990 | attrs_ok = true; | |
1991 | declspecs_add_qual (specs, c_parser_peek_token (parser)->value); | |
1992 | c_parser_consume_token (parser); | |
1993 | break; | |
1994 | case RID_ATTRIBUTE: | |
1995 | if (!attrs_ok) | |
1996 | goto out; | |
1997 | attrs = c_parser_attributes (parser); | |
1998 | declspecs_add_attrs (specs, attrs); | |
1999 | break; | |
2000 | default: | |
2001 | goto out; | |
2002 | } | |
2003 | } | |
2004 | out: ; | |
2005 | } | |
2006 | ||
2007 | /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2). | |
2008 | ||
2009 | enum-specifier: | |
2010 | enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt] | |
2011 | enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt] | |
2012 | enum attributes[opt] identifier | |
2013 | ||
2014 | The form with trailing comma is new in C99. The forms with | |
2015 | attributes are GNU extensions. In GNU C, we accept any expression | |
2016 | without commas in the syntax (assignment expressions, not just | |
2017 | conditional expressions); assignment expressions will be diagnosed | |
2018 | as non-constant. | |
2019 | ||
2020 | enumerator-list: | |
2021 | enumerator | |
2022 | enumerator-list , enumerator | |
2023 | ||
2024 | enumerator: | |
2025 | enumeration-constant | |
2026 | enumeration-constant = constant-expression | |
2027 | */ | |
2028 | ||
2029 | static struct c_typespec | |
2030 | c_parser_enum_specifier (c_parser *parser) | |
2031 | { | |
2032 | struct c_typespec ret; | |
2033 | tree attrs; | |
2034 | tree ident = NULL_TREE; | |
24b97832 | 2035 | location_t enum_loc; |
922f2908 | 2036 | location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c | 2037 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM)); |
24b97832 | 2038 | enum_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2039 | c_parser_consume_token (parser); |
2040 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2041 | enum_loc = c_parser_peek_token (parser)->location; |
5af28c74 TT |
2042 | /* Set the location in case we create a decl now. */ |
2043 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
27bf414c JM |
2044 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2045 | { | |
2046 | ident = c_parser_peek_token (parser)->value; | |
c7412148 | 2047 | ident_loc = c_parser_peek_token (parser)->location; |
24b97832 | 2048 | enum_loc = ident_loc; |
27bf414c JM |
2049 | c_parser_consume_token (parser); |
2050 | } | |
2051 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2052 | { | |
2053 | /* Parse an enum definition. */ | |
7114359f | 2054 | struct c_enum_contents the_enum; |
c2255bc4 | 2055 | tree type = start_enum (enum_loc, &the_enum, ident); |
27bf414c JM |
2056 | tree postfix_attrs; |
2057 | /* We chain the enumerators in reverse order, then put them in | |
2058 | forward order at the end. */ | |
2059 | tree values = NULL_TREE; | |
2060 | c_parser_consume_token (parser); | |
2061 | while (true) | |
2062 | { | |
2063 | tree enum_id; | |
2064 | tree enum_value; | |
2065 | tree enum_decl; | |
2066 | bool seen_comma; | |
5af28c74 | 2067 | c_token *token; |
922f2908 | 2068 | location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
7370e0da | 2069 | location_t decl_loc, value_loc; |
27bf414c JM |
2070 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
2071 | { | |
2072 | c_parser_error (parser, "expected identifier"); | |
2073 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2074 | values = error_mark_node; | |
2075 | break; | |
2076 | } | |
5af28c74 TT |
2077 | token = c_parser_peek_token (parser); |
2078 | enum_id = token->value; | |
2079 | /* Set the location in case we create a decl now. */ | |
2080 | c_parser_set_source_position_from_token (token); | |
7370e0da | 2081 | decl_loc = value_loc = token->location; |
27bf414c JM |
2082 | c_parser_consume_token (parser); |
2083 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
2084 | { | |
2085 | c_parser_consume_token (parser); | |
85790e66 | 2086 | value_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2087 | enum_value = c_parser_expr_no_commas (parser, NULL).value; |
2088 | } | |
2089 | else | |
2090 | enum_value = NULL_TREE; | |
7370e0da | 2091 | enum_decl = build_enumerator (decl_loc, value_loc, |
c2255bc4 | 2092 | &the_enum, enum_id, enum_value); |
27bf414c JM |
2093 | TREE_CHAIN (enum_decl) = values; |
2094 | values = enum_decl; | |
2095 | seen_comma = false; | |
2096 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2097 | { | |
c7412148 | 2098 | comma_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2099 | seen_comma = true; |
2100 | c_parser_consume_token (parser); | |
2101 | } | |
2102 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2103 | { | |
fcf73884 | 2104 | if (seen_comma && !flag_isoc99) |
509c9d60 | 2105 | pedwarn (comma_loc, OPT_pedantic, "comma at end of enumerator list"); |
27bf414c JM |
2106 | c_parser_consume_token (parser); |
2107 | break; | |
2108 | } | |
2109 | if (!seen_comma) | |
2110 | { | |
2111 | c_parser_error (parser, "expected %<,%> or %<}%>"); | |
2112 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2113 | values = error_mark_node; | |
2114 | break; | |
2115 | } | |
2116 | } | |
2117 | postfix_attrs = c_parser_attributes (parser); | |
2118 | ret.spec = finish_enum (type, nreverse (values), | |
2119 | chainon (attrs, postfix_attrs)); | |
2120 | ret.kind = ctsk_tagdef; | |
928c19bb JM |
2121 | ret.expr = NULL_TREE; |
2122 | ret.expr_const_operands = true; | |
27bf414c JM |
2123 | return ret; |
2124 | } | |
2125 | else if (!ident) | |
2126 | { | |
2127 | c_parser_error (parser, "expected %<{%>"); | |
2128 | ret.spec = error_mark_node; | |
2129 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2130 | ret.expr = NULL_TREE; |
2131 | ret.expr_const_operands = true; | |
27bf414c JM |
2132 | return ret; |
2133 | } | |
c2255bc4 | 2134 | ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident); |
27bf414c JM |
2135 | /* In ISO C, enumerated types can be referred to only if already |
2136 | defined. */ | |
2137 | if (pedantic && !COMPLETE_TYPE_P (ret.spec)) | |
c7412148 TT |
2138 | { |
2139 | gcc_assert (ident); | |
c2255bc4 | 2140 | pedwarn (enum_loc, OPT_pedantic, |
509c9d60 | 2141 | "ISO C forbids forward references to %<enum%> types"); |
c7412148 | 2142 | } |
27bf414c JM |
2143 | return ret; |
2144 | } | |
2145 | ||
2146 | /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1). | |
2147 | ||
2148 | struct-or-union-specifier: | |
2149 | struct-or-union attributes[opt] identifier[opt] | |
2150 | { struct-contents } attributes[opt] | |
2151 | struct-or-union attributes[opt] identifier | |
2152 | ||
2153 | struct-contents: | |
2154 | struct-declaration-list | |
2155 | ||
2156 | struct-declaration-list: | |
2157 | struct-declaration ; | |
2158 | struct-declaration-list struct-declaration ; | |
2159 | ||
2160 | GNU extensions: | |
2161 | ||
2162 | struct-contents: | |
2163 | empty | |
2164 | struct-declaration | |
2165 | struct-declaration-list struct-declaration | |
2166 | ||
2167 | struct-declaration-list: | |
2168 | struct-declaration-list ; | |
2169 | ; | |
2170 | ||
2171 | (Note that in the syntax here, unlike that in ISO C, the semicolons | |
2172 | are included here rather than in struct-declaration, in order to | |
2173 | describe the syntax with extra semicolons and missing semicolon at | |
2174 | end.) | |
2175 | ||
2176 | Objective-C: | |
2177 | ||
2178 | struct-declaration-list: | |
2179 | @defs ( class-name ) | |
2180 | ||
2181 | (Note this does not include a trailing semicolon, but can be | |
2182 | followed by further declarations, and gets a pedwarn-if-pedantic | |
2183 | when followed by a semicolon.) */ | |
2184 | ||
2185 | static struct c_typespec | |
2186 | c_parser_struct_or_union_specifier (c_parser *parser) | |
2187 | { | |
2188 | struct c_typespec ret; | |
2189 | tree attrs; | |
2190 | tree ident = NULL_TREE; | |
24b97832 ILT |
2191 | location_t struct_loc; |
2192 | location_t ident_loc = UNKNOWN_LOCATION; | |
27bf414c JM |
2193 | enum tree_code code; |
2194 | switch (c_parser_peek_token (parser)->keyword) | |
2195 | { | |
2196 | case RID_STRUCT: | |
2197 | code = RECORD_TYPE; | |
2198 | break; | |
2199 | case RID_UNION: | |
2200 | code = UNION_TYPE; | |
2201 | break; | |
2202 | default: | |
2203 | gcc_unreachable (); | |
2204 | } | |
24b97832 | 2205 | struct_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2206 | c_parser_consume_token (parser); |
2207 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2208 | |
5af28c74 TT |
2209 | /* Set the location in case we create a decl now. */ |
2210 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
c2255bc4 | 2211 | |
27bf414c JM |
2212 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2213 | { | |
2214 | ident = c_parser_peek_token (parser)->value; | |
24b97832 ILT |
2215 | ident_loc = c_parser_peek_token (parser)->location; |
2216 | struct_loc = ident_loc; | |
27bf414c JM |
2217 | c_parser_consume_token (parser); |
2218 | } | |
2219 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2220 | { | |
2221 | /* Parse a struct or union definition. Start the scope of the | |
2222 | tag before parsing components. */ | |
dc491a25 ILT |
2223 | struct c_struct_parse_info *struct_info; |
2224 | tree type = start_struct (struct_loc, code, ident, &struct_info); | |
27bf414c JM |
2225 | tree postfix_attrs; |
2226 | /* We chain the components in reverse order, then put them in | |
2227 | forward order at the end. Each struct-declaration may | |
2228 | declare multiple components (comma-separated), so we must use | |
2229 | chainon to join them, although when parsing each | |
2230 | struct-declaration we can use TREE_CHAIN directly. | |
2231 | ||
2232 | The theory behind all this is that there will be more | |
2233 | semicolon separated fields than comma separated fields, and | |
2234 | so we'll be minimizing the number of node traversals required | |
2235 | by chainon. */ | |
2236 | tree contents = NULL_TREE; | |
2237 | c_parser_consume_token (parser); | |
2238 | /* Handle the Objective-C @defs construct, | |
2239 | e.g. foo(sizeof(struct{ @defs(ClassName) }));. */ | |
2240 | if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS)) | |
2241 | { | |
2242 | tree name; | |
2243 | gcc_assert (c_dialect_objc ()); | |
2244 | c_parser_consume_token (parser); | |
2245 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2246 | goto end_at_defs; | |
2247 | if (c_parser_next_token_is (parser, CPP_NAME) | |
2248 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME) | |
2249 | { | |
2250 | name = c_parser_peek_token (parser)->value; | |
2251 | c_parser_consume_token (parser); | |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | c_parser_error (parser, "expected class name"); | |
2256 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
2257 | goto end_at_defs; | |
2258 | } | |
2259 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2260 | "expected %<)%>"); | |
2261 | contents = nreverse (objc_get_class_ivars (name)); | |
2262 | } | |
2263 | end_at_defs: | |
2264 | /* Parse the struct-declarations and semicolons. Problems with | |
2265 | semicolons are diagnosed here; empty structures are diagnosed | |
2266 | elsewhere. */ | |
2267 | while (true) | |
2268 | { | |
2269 | tree decls; | |
2270 | /* Parse any stray semicolon. */ | |
2271 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2272 | { | |
b8698a0f | 2273 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 2274 | "extra semicolon in struct or union specified"); |
27bf414c JM |
2275 | c_parser_consume_token (parser); |
2276 | continue; | |
2277 | } | |
2278 | /* Stop if at the end of the struct or union contents. */ | |
2279 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2280 | { | |
2281 | c_parser_consume_token (parser); | |
2282 | break; | |
2283 | } | |
bc4071dd RH |
2284 | /* Accept #pragmas at struct scope. */ |
2285 | if (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
2286 | { | |
2287 | c_parser_pragma (parser, pragma_external); | |
2288 | continue; | |
2289 | } | |
27bf414c JM |
2290 | /* Parse some comma-separated declarations, but not the |
2291 | trailing semicolon if any. */ | |
2292 | decls = c_parser_struct_declaration (parser); | |
2293 | contents = chainon (decls, contents); | |
2294 | /* If no semicolon follows, either we have a parse error or | |
2295 | are at the end of the struct or union and should | |
2296 | pedwarn. */ | |
2297 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2298 | c_parser_consume_token (parser); | |
2299 | else | |
2300 | { | |
2301 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
b8698a0f | 2302 | pedwarn (c_parser_peek_token (parser)->location, 0, |
509c9d60 | 2303 | "no semicolon at end of struct or union"); |
27bf414c JM |
2304 | else |
2305 | { | |
2306 | c_parser_error (parser, "expected %<;%>"); | |
2307 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2308 | break; | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | postfix_attrs = c_parser_attributes (parser); | |
c2255bc4 | 2313 | ret.spec = finish_struct (struct_loc, type, nreverse (contents), |
dc491a25 | 2314 | chainon (attrs, postfix_attrs), struct_info); |
27bf414c | 2315 | ret.kind = ctsk_tagdef; |
928c19bb JM |
2316 | ret.expr = NULL_TREE; |
2317 | ret.expr_const_operands = true; | |
27bf414c JM |
2318 | return ret; |
2319 | } | |
2320 | else if (!ident) | |
2321 | { | |
2322 | c_parser_error (parser, "expected %<{%>"); | |
2323 | ret.spec = error_mark_node; | |
2324 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2325 | ret.expr = NULL_TREE; |
2326 | ret.expr_const_operands = true; | |
67c2939d | 2327 | return ret; |
27bf414c | 2328 | } |
c2255bc4 | 2329 | ret = parser_xref_tag (ident_loc, code, ident); |
27bf414c JM |
2330 | return ret; |
2331 | } | |
2332 | ||
2333 | /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without* | |
2334 | the trailing semicolon. | |
2335 | ||
2336 | struct-declaration: | |
2337 | specifier-qualifier-list struct-declarator-list | |
32912286 | 2338 | static_assert-declaration-no-semi |
27bf414c JM |
2339 | |
2340 | specifier-qualifier-list: | |
2341 | type-specifier specifier-qualifier-list[opt] | |
2342 | type-qualifier specifier-qualifier-list[opt] | |
2343 | attributes specifier-qualifier-list[opt] | |
2344 | ||
2345 | struct-declarator-list: | |
2346 | struct-declarator | |
2347 | struct-declarator-list , attributes[opt] struct-declarator | |
2348 | ||
2349 | struct-declarator: | |
2350 | declarator attributes[opt] | |
2351 | declarator[opt] : constant-expression attributes[opt] | |
2352 | ||
2353 | GNU extensions: | |
2354 | ||
2355 | struct-declaration: | |
2356 | __extension__ struct-declaration | |
2357 | specifier-qualifier-list | |
2358 | ||
2359 | Unlike the ISO C syntax, semicolons are handled elsewhere. The use | |
2360 | of attributes where shown is a GNU extension. In GNU C, we accept | |
2361 | any expression without commas in the syntax (assignment | |
2362 | expressions, not just conditional expressions); assignment | |
2363 | expressions will be diagnosed as non-constant. */ | |
2364 | ||
2365 | static tree | |
2366 | c_parser_struct_declaration (c_parser *parser) | |
2367 | { | |
2368 | struct c_declspecs *specs; | |
2369 | tree prefix_attrs; | |
2370 | tree all_prefix_attrs; | |
2371 | tree decls; | |
c7412148 | 2372 | location_t decl_loc; |
27bf414c JM |
2373 | if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) |
2374 | { | |
2375 | int ext; | |
2376 | tree decl; | |
2377 | ext = disable_extension_diagnostics (); | |
2378 | c_parser_consume_token (parser); | |
2379 | decl = c_parser_struct_declaration (parser); | |
2380 | restore_extension_diagnostics (ext); | |
2381 | return decl; | |
2382 | } | |
32912286 JM |
2383 | if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) |
2384 | { | |
2385 | c_parser_static_assert_declaration_no_semi (parser); | |
2386 | return NULL_TREE; | |
2387 | } | |
27bf414c | 2388 | specs = build_null_declspecs (); |
c7412148 | 2389 | decl_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2390 | c_parser_declspecs (parser, specs, false, true, true); |
2391 | if (parser->error) | |
67c2939d | 2392 | return NULL_TREE; |
27bf414c JM |
2393 | if (!specs->declspecs_seen_p) |
2394 | { | |
2395 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
2396 | return NULL_TREE; | |
2397 | } | |
2398 | finish_declspecs (specs); | |
b8cbdff5 JM |
2399 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) |
2400 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
27bf414c JM |
2401 | { |
2402 | tree ret; | |
9e5b2115 | 2403 | if (specs->typespec_kind == ctsk_none) |
27bf414c | 2404 | { |
b8698a0f | 2405 | pedwarn (decl_loc, OPT_pedantic, |
509c9d60 | 2406 | "ISO C forbids member declarations with no members"); |
27bf414c JM |
2407 | shadow_tag_warned (specs, pedantic); |
2408 | ret = NULL_TREE; | |
2409 | } | |
2410 | else | |
2411 | { | |
2412 | /* Support for unnamed structs or unions as members of | |
2413 | structs or unions (which is [a] useful and [b] supports | |
2414 | MS P-SDK). */ | |
b9baeecd | 2415 | tree attrs = NULL; |
3d10ed6c AH |
2416 | |
2417 | ret = grokfield (c_parser_peek_token (parser)->location, | |
2418 | build_id_declarator (NULL_TREE), specs, | |
b9baeecd | 2419 | NULL_TREE, &attrs); |
0ad7e054 RS |
2420 | if (ret) |
2421 | decl_attributes (&ret, attrs, 0); | |
27bf414c JM |
2422 | } |
2423 | return ret; | |
2424 | } | |
2425 | pending_xref_error (); | |
2426 | prefix_attrs = specs->attrs; | |
2427 | all_prefix_attrs = prefix_attrs; | |
2428 | specs->attrs = NULL_TREE; | |
2429 | decls = NULL_TREE; | |
2430 | while (true) | |
2431 | { | |
2432 | /* Declaring one or more declarators or un-named bit-fields. */ | |
2433 | struct c_declarator *declarator; | |
2434 | bool dummy = false; | |
2435 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2436 | declarator = build_id_declarator (NULL_TREE); | |
2437 | else | |
9e5b2115 PB |
2438 | declarator = c_parser_declarator (parser, |
2439 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
2440 | C_DTR_NORMAL, &dummy); |
2441 | if (declarator == NULL) | |
2442 | { | |
2443 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2444 | break; | |
2445 | } | |
2446 | if (c_parser_next_token_is (parser, CPP_COLON) | |
2447 | || c_parser_next_token_is (parser, CPP_COMMA) | |
2448 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2449 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE) | |
2450 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2451 | { | |
2452 | tree postfix_attrs = NULL_TREE; | |
2453 | tree width = NULL_TREE; | |
2454 | tree d; | |
2455 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2456 | { | |
2457 | c_parser_consume_token (parser); | |
2458 | width = c_parser_expr_no_commas (parser, NULL).value; | |
2459 | } | |
2460 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2461 | postfix_attrs = c_parser_attributes (parser); | |
3d10ed6c AH |
2462 | d = grokfield (c_parser_peek_token (parser)->location, |
2463 | declarator, specs, width, &all_prefix_attrs); | |
27bf414c JM |
2464 | decl_attributes (&d, chainon (postfix_attrs, |
2465 | all_prefix_attrs), 0); | |
910ad8de | 2466 | DECL_CHAIN (d) = decls; |
27bf414c JM |
2467 | decls = d; |
2468 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2469 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
2470 | prefix_attrs); | |
2471 | else | |
2472 | all_prefix_attrs = prefix_attrs; | |
2473 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2474 | c_parser_consume_token (parser); | |
2475 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2476 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2477 | { | |
2478 | /* Semicolon consumed in caller. */ | |
2479 | break; | |
2480 | } | |
2481 | else | |
2482 | { | |
2483 | c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>"); | |
2484 | break; | |
2485 | } | |
2486 | } | |
2487 | else | |
2488 | { | |
2489 | c_parser_error (parser, | |
2490 | "expected %<:%>, %<,%>, %<;%>, %<}%> or " | |
2491 | "%<__attribute__%>"); | |
2492 | break; | |
2493 | } | |
2494 | } | |
2495 | return decls; | |
2496 | } | |
2497 | ||
2498 | /* Parse a typeof specifier (a GNU extension). | |
2499 | ||
2500 | typeof-specifier: | |
2501 | typeof ( expression ) | |
2502 | typeof ( type-name ) | |
2503 | */ | |
2504 | ||
2505 | static struct c_typespec | |
2506 | c_parser_typeof_specifier (c_parser *parser) | |
2507 | { | |
2508 | struct c_typespec ret; | |
2509 | ret.kind = ctsk_typeof; | |
2510 | ret.spec = error_mark_node; | |
928c19bb JM |
2511 | ret.expr = NULL_TREE; |
2512 | ret.expr_const_operands = true; | |
27bf414c JM |
2513 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF)); |
2514 | c_parser_consume_token (parser); | |
7d882b83 | 2515 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
2516 | in_typeof++; |
2517 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2518 | { | |
7d882b83 | 2519 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2520 | in_typeof--; |
2521 | return ret; | |
2522 | } | |
2523 | if (c_parser_next_token_starts_typename (parser)) | |
2524 | { | |
2525 | struct c_type_name *type = c_parser_type_name (parser); | |
7d882b83 | 2526 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2527 | in_typeof--; |
2528 | if (type != NULL) | |
2529 | { | |
928c19bb | 2530 | ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands); |
27bf414c JM |
2531 | pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE)); |
2532 | } | |
2533 | } | |
2534 | else | |
2535 | { | |
52ffd86e | 2536 | bool was_vm; |
c7412148 | 2537 | location_t here = c_parser_peek_token (parser)->location; |
27bf414c | 2538 | struct c_expr expr = c_parser_expression (parser); |
7d882b83 | 2539 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2540 | in_typeof--; |
2541 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
2542 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 2543 | error_at (here, "%<typeof%> applied to a bit-field"); |
ebfbbdc5 | 2544 | mark_exp_read (expr.value); |
27bf414c | 2545 | ret.spec = TREE_TYPE (expr.value); |
e426b47b NP |
2546 | if (c_dialect_objc() |
2547 | && ret.spec != error_mark_node | |
2548 | && lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (ret.spec))) | |
2549 | ret.spec = build_qualified_type | |
2550 | (ret.spec, (TYPE_QUALS (ret.spec) & ~TYPE_QUAL_VOLATILE)); | |
52ffd86e | 2551 | was_vm = variably_modified_type_p (ret.spec, NULL_TREE); |
928c19bb JM |
2552 | /* This is returned with the type so that when the type is |
2553 | evaluated, this can be evaluated. */ | |
2554 | if (was_vm) | |
2555 | ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands); | |
52ffd86e | 2556 | pop_maybe_used (was_vm); |
27bf414c JM |
2557 | } |
2558 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2559 | return ret; | |
2560 | } | |
2561 | ||
2562 | /* Parse a declarator, possibly an abstract declarator (C90 6.5.4, | |
2563 | 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may | |
2564 | be redeclared; otherwise it may not. KIND indicates which kind of | |
2565 | declarator is wanted. Returns a valid declarator except in the | |
2566 | case of a syntax error in which case NULL is returned. *SEEN_ID is | |
2567 | set to true if an identifier being declared is seen; this is used | |
2568 | to diagnose bad forms of abstract array declarators and to | |
2569 | determine whether an identifier list is syntactically permitted. | |
2570 | ||
2571 | declarator: | |
2572 | pointer[opt] direct-declarator | |
2573 | ||
2574 | direct-declarator: | |
2575 | identifier | |
2576 | ( attributes[opt] declarator ) | |
2577 | direct-declarator array-declarator | |
2578 | direct-declarator ( parameter-type-list ) | |
2579 | direct-declarator ( identifier-list[opt] ) | |
2580 | ||
2581 | pointer: | |
2582 | * type-qualifier-list[opt] | |
2583 | * type-qualifier-list[opt] pointer | |
2584 | ||
2585 | type-qualifier-list: | |
2586 | type-qualifier | |
2587 | attributes | |
2588 | type-qualifier-list type-qualifier | |
2589 | type-qualifier-list attributes | |
2590 | ||
2591 | parameter-type-list: | |
2592 | parameter-list | |
2593 | parameter-list , ... | |
2594 | ||
2595 | parameter-list: | |
2596 | parameter-declaration | |
2597 | parameter-list , parameter-declaration | |
2598 | ||
2599 | parameter-declaration: | |
2600 | declaration-specifiers declarator attributes[opt] | |
2601 | declaration-specifiers abstract-declarator[opt] attributes[opt] | |
2602 | ||
2603 | identifier-list: | |
2604 | identifier | |
2605 | identifier-list , identifier | |
2606 | ||
2607 | abstract-declarator: | |
2608 | pointer | |
2609 | pointer[opt] direct-abstract-declarator | |
2610 | ||
2611 | direct-abstract-declarator: | |
2612 | ( attributes[opt] abstract-declarator ) | |
2613 | direct-abstract-declarator[opt] array-declarator | |
2614 | direct-abstract-declarator[opt] ( parameter-type-list[opt] ) | |
2615 | ||
2616 | GNU extensions: | |
2617 | ||
2618 | direct-declarator: | |
2619 | direct-declarator ( parameter-forward-declarations | |
2620 | parameter-type-list[opt] ) | |
2621 | ||
2622 | direct-abstract-declarator: | |
c22cacf3 | 2623 | direct-abstract-declarator[opt] ( parameter-forward-declarations |
27bf414c JM |
2624 | parameter-type-list[opt] ) |
2625 | ||
2626 | parameter-forward-declarations: | |
2627 | parameter-list ; | |
2628 | parameter-forward-declarations parameter-list ; | |
2629 | ||
2630 | The uses of attributes shown above are GNU extensions. | |
2631 | ||
2632 | Some forms of array declarator are not included in C99 in the | |
2633 | syntax for abstract declarators; these are disallowed elsewhere. | |
2634 | This may be a defect (DR#289). | |
2635 | ||
2636 | This function also accepts an omitted abstract declarator as being | |
2637 | an abstract declarator, although not part of the formal syntax. */ | |
2638 | ||
2639 | static struct c_declarator * | |
2640 | c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2641 | bool *seen_id) | |
2642 | { | |
2643 | /* Parse any initial pointer part. */ | |
2644 | if (c_parser_next_token_is (parser, CPP_MULT)) | |
2645 | { | |
2646 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
2647 | struct c_declarator *inner; | |
2648 | c_parser_consume_token (parser); | |
2649 | c_parser_declspecs (parser, quals_attrs, false, false, true); | |
2650 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
2651 | if (inner == NULL) | |
2652 | return NULL; | |
2653 | else | |
2654 | return make_pointer_declarator (quals_attrs, inner); | |
2655 | } | |
2656 | /* Now we have a direct declarator, direct abstract declarator or | |
2657 | nothing (which counts as a direct abstract declarator here). */ | |
2658 | return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id); | |
2659 | } | |
2660 | ||
2661 | /* Parse a direct declarator or direct abstract declarator; arguments | |
2662 | as c_parser_declarator. */ | |
2663 | ||
2664 | static struct c_declarator * | |
2665 | c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2666 | bool *seen_id) | |
2667 | { | |
2668 | /* The direct declarator must start with an identifier (possibly | |
2669 | omitted) or a parenthesized declarator (possibly abstract). In | |
2670 | an ordinary declarator, initial parentheses must start a | |
2671 | parenthesized declarator. In an abstract declarator or parameter | |
2672 | declarator, they could start a parenthesized declarator or a | |
2673 | parameter list. To tell which, the open parenthesis and any | |
2674 | following attributes must be read. If a declaration specifier | |
2675 | follows, then it is a parameter list; if the specifier is a | |
2676 | typedef name, there might be an ambiguity about redeclaring it, | |
2677 | which is resolved in the direction of treating it as a typedef | |
2678 | name. If a close parenthesis follows, it is also an empty | |
2679 | parameter list, as the syntax does not permit empty abstract | |
0fa2e4df | 2680 | declarators. Otherwise, it is a parenthesized declarator (in |
27bf414c JM |
2681 | which case the analysis may be repeated inside it, recursively). |
2682 | ||
2683 | ??? There is an ambiguity in a parameter declaration "int | |
2684 | (__attribute__((foo)) x)", where x is not a typedef name: it | |
2685 | could be an abstract declarator for a function, or declare x with | |
2686 | parentheses. The proper resolution of this ambiguity needs | |
2687 | documenting. At present we follow an accident of the old | |
2688 | parser's implementation, whereby the first parameter must have | |
2689 | some declaration specifiers other than just attributes. Thus as | |
0fa2e4df | 2690 | a parameter declaration it is treated as a parenthesized |
27bf414c JM |
2691 | parameter named x, and as an abstract declarator it is |
2692 | rejected. | |
2693 | ||
2694 | ??? Also following the old parser, attributes inside an empty | |
2695 | parameter list are ignored, making it a list not yielding a | |
2696 | prototype, rather than giving an error or making it have one | |
2697 | parameter with implicit type int. | |
2698 | ||
2699 | ??? Also following the old parser, typedef names may be | |
2700 | redeclared in declarators, but not Objective-C class names. */ | |
2701 | ||
2702 | if (kind != C_DTR_ABSTRACT | |
2703 | && c_parser_next_token_is (parser, CPP_NAME) | |
2704 | && ((type_seen_p | |
a6341d57 NP |
2705 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME |
2706 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
2707 | || c_parser_peek_token (parser)->id_kind == C_ID_ID)) |
2708 | { | |
2709 | struct c_declarator *inner | |
2710 | = build_id_declarator (c_parser_peek_token (parser)->value); | |
2711 | *seen_id = true; | |
6037d88d | 2712 | inner->id_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2713 | c_parser_consume_token (parser); |
2714 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2715 | } | |
2716 | ||
2717 | if (kind != C_DTR_NORMAL | |
2718 | && c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
2719 | { | |
2720 | struct c_declarator *inner = build_id_declarator (NULL_TREE); | |
2721 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2722 | } | |
2723 | ||
2724 | /* Either we are at the end of an abstract declarator, or we have | |
2725 | parentheses. */ | |
2726 | ||
2727 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2728 | { | |
2729 | tree attrs; | |
2730 | struct c_declarator *inner; | |
2731 | c_parser_consume_token (parser); | |
2732 | attrs = c_parser_attributes (parser); | |
2733 | if (kind != C_DTR_NORMAL | |
2734 | && (c_parser_next_token_starts_declspecs (parser) | |
2735 | || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))) | |
2736 | { | |
2737 | struct c_arg_info *args | |
2738 | = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL, | |
2739 | attrs); | |
2740 | if (args == NULL) | |
2741 | return NULL; | |
2742 | else | |
2743 | { | |
2744 | inner | |
2745 | = build_function_declarator (args, | |
2746 | build_id_declarator (NULL_TREE)); | |
2747 | return c_parser_direct_declarator_inner (parser, *seen_id, | |
2748 | inner); | |
2749 | } | |
2750 | } | |
2751 | /* A parenthesized declarator. */ | |
2752 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
2753 | if (inner != NULL && attrs != NULL) | |
2754 | inner = build_attrs_declarator (attrs, inner); | |
2755 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2756 | { | |
2757 | c_parser_consume_token (parser); | |
2758 | if (inner == NULL) | |
2759 | return NULL; | |
2760 | else | |
2761 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2762 | } | |
2763 | else | |
2764 | { | |
2765 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2766 | "expected %<)%>"); | |
2767 | return NULL; | |
2768 | } | |
2769 | } | |
2770 | else | |
2771 | { | |
2772 | if (kind == C_DTR_NORMAL) | |
2773 | { | |
2774 | c_parser_error (parser, "expected identifier or %<(%>"); | |
2775 | return NULL; | |
2776 | } | |
2777 | else | |
2778 | return build_id_declarator (NULL_TREE); | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | /* Parse part of a direct declarator or direct abstract declarator, | |
2783 | given that some (in INNER) has already been parsed; ID_PRESENT is | |
2784 | true if an identifier is present, false for an abstract | |
2785 | declarator. */ | |
2786 | ||
2787 | static struct c_declarator * | |
2788 | c_parser_direct_declarator_inner (c_parser *parser, bool id_present, | |
2789 | struct c_declarator *inner) | |
2790 | { | |
2791 | /* Parse a sequence of array declarators and parameter lists. */ | |
2792 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
2793 | { | |
b8698a0f | 2794 | location_t brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2795 | struct c_declarator *declarator; |
2796 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
2797 | bool static_seen; | |
2798 | bool star_seen; | |
2799 | tree dimen; | |
2800 | c_parser_consume_token (parser); | |
2801 | c_parser_declspecs (parser, quals_attrs, false, false, true); | |
2802 | static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC); | |
2803 | if (static_seen) | |
2804 | c_parser_consume_token (parser); | |
2805 | if (static_seen && !quals_attrs->declspecs_seen_p) | |
2806 | c_parser_declspecs (parser, quals_attrs, false, false, true); | |
2807 | if (!quals_attrs->declspecs_seen_p) | |
2808 | quals_attrs = NULL; | |
2809 | /* If "static" is present, there must be an array dimension. | |
2810 | Otherwise, there may be a dimension, "*", or no | |
2811 | dimension. */ | |
2812 | if (static_seen) | |
2813 | { | |
2814 | star_seen = false; | |
2815 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
2816 | } | |
2817 | else | |
2818 | { | |
2819 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
2820 | { | |
2821 | dimen = NULL_TREE; | |
2822 | star_seen = false; | |
2823 | } | |
2824 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
2825 | { | |
2826 | if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE) | |
2827 | { | |
2828 | dimen = NULL_TREE; | |
2829 | star_seen = true; | |
2830 | c_parser_consume_token (parser); | |
2831 | } | |
2832 | else | |
2833 | { | |
2834 | star_seen = false; | |
2835 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
2836 | } | |
2837 | } | |
2838 | else | |
2839 | { | |
2840 | star_seen = false; | |
2841 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
2842 | } | |
2843 | } | |
2844 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
2845 | c_parser_consume_token (parser); | |
2846 | else | |
2847 | { | |
2848 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
2849 | "expected %<]%>"); | |
2850 | return NULL; | |
2851 | } | |
97e3c923 JJ |
2852 | if (dimen) |
2853 | mark_exp_read (dimen); | |
c2255bc4 AH |
2854 | declarator = build_array_declarator (brace_loc, dimen, quals_attrs, |
2855 | static_seen, star_seen); | |
52ffd86e MS |
2856 | if (declarator == NULL) |
2857 | return NULL; | |
6ac0194d | 2858 | inner = set_array_declarator_inner (declarator, inner); |
27bf414c JM |
2859 | return c_parser_direct_declarator_inner (parser, id_present, inner); |
2860 | } | |
2861 | else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2862 | { | |
2863 | tree attrs; | |
2864 | struct c_arg_info *args; | |
2865 | c_parser_consume_token (parser); | |
2866 | attrs = c_parser_attributes (parser); | |
2867 | args = c_parser_parms_declarator (parser, id_present, attrs); | |
2868 | if (args == NULL) | |
2869 | return NULL; | |
2870 | else | |
2871 | { | |
2872 | inner = build_function_declarator (args, inner); | |
2873 | return c_parser_direct_declarator_inner (parser, id_present, inner); | |
2874 | } | |
2875 | } | |
2876 | return inner; | |
2877 | } | |
2878 | ||
2879 | /* Parse a parameter list or identifier list, including the closing | |
2880 | parenthesis but not the opening one. ATTRS are the attributes at | |
2881 | the start of the list. ID_LIST_OK is true if an identifier list is | |
2882 | acceptable; such a list must not have attributes at the start. */ | |
2883 | ||
2884 | static struct c_arg_info * | |
2885 | c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs) | |
2886 | { | |
2887 | push_scope (); | |
2888 | declare_parm_level (); | |
2889 | /* If the list starts with an identifier, it is an identifier list. | |
2890 | Otherwise, it is either a prototype list or an empty list. */ | |
2891 | if (id_list_ok | |
2892 | && !attrs | |
2893 | && c_parser_next_token_is (parser, CPP_NAME) | |
2894 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
2895 | { | |
7fa3585c | 2896 | tree list = NULL_TREE, *nextp = &list; |
27bf414c JM |
2897 | while (c_parser_next_token_is (parser, CPP_NAME) |
2898 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
2899 | { | |
7fa3585c GK |
2900 | *nextp = build_tree_list (NULL_TREE, |
2901 | c_parser_peek_token (parser)->value); | |
2902 | nextp = & TREE_CHAIN (*nextp); | |
27bf414c JM |
2903 | c_parser_consume_token (parser); |
2904 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
2905 | break; | |
2906 | c_parser_consume_token (parser); | |
2907 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2908 | { | |
2909 | c_parser_error (parser, "expected identifier"); | |
2910 | break; | |
2911 | } | |
2912 | } | |
2913 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2914 | { | |
b3399d18 | 2915 | struct c_arg_info *ret = build_arg_info (); |
27bf414c | 2916 | ret->types = list; |
27bf414c JM |
2917 | c_parser_consume_token (parser); |
2918 | pop_scope (); | |
2919 | return ret; | |
2920 | } | |
2921 | else | |
2922 | { | |
2923 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2924 | "expected %<)%>"); | |
2925 | pop_scope (); | |
2926 | return NULL; | |
2927 | } | |
2928 | } | |
2929 | else | |
2930 | { | |
2931 | struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs); | |
2932 | pop_scope (); | |
2933 | return ret; | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | /* Parse a parameter list (possibly empty), including the closing | |
2938 | parenthesis but not the opening one. ATTRS are the attributes at | |
2939 | the start of the list. */ | |
2940 | ||
2941 | static struct c_arg_info * | |
2942 | c_parser_parms_list_declarator (c_parser *parser, tree attrs) | |
2943 | { | |
09a1e889 | 2944 | bool bad_parm = false; |
27bf414c JM |
2945 | /* ??? Following the old parser, forward parameter declarations may |
2946 | use abstract declarators, and if no real parameter declarations | |
2947 | follow the forward declarations then this is not diagnosed. Also | |
2948 | note as above that attributes are ignored as the only contents of | |
2949 | the parentheses, or as the only contents after forward | |
2950 | declarations. */ | |
2951 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2952 | { | |
b3399d18 | 2953 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
2954 | c_parser_consume_token (parser); |
2955 | return ret; | |
2956 | } | |
2957 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
2958 | { | |
b3399d18 | 2959 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
2960 | /* Suppress -Wold-style-definition for this case. */ |
2961 | ret->types = error_mark_node; | |
3ba09659 AH |
2962 | error_at (c_parser_peek_token (parser)->location, |
2963 | "ISO C requires a named argument before %<...%>"); | |
27bf414c JM |
2964 | c_parser_consume_token (parser); |
2965 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2966 | { | |
2967 | c_parser_consume_token (parser); | |
2968 | return ret; | |
2969 | } | |
2970 | else | |
2971 | { | |
2972 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2973 | "expected %<)%>"); | |
2974 | return NULL; | |
2975 | } | |
2976 | } | |
2977 | /* Nonempty list of parameters, either terminated with semicolon | |
2978 | (forward declarations; recurse) or with close parenthesis (normal | |
2979 | function) or with ", ... )" (variadic function). */ | |
2980 | while (true) | |
2981 | { | |
2982 | /* Parse a parameter. */ | |
2983 | struct c_parm *parm = c_parser_parameter_declaration (parser, attrs); | |
2984 | attrs = NULL_TREE; | |
09a1e889 SZ |
2985 | if (parm == NULL) |
2986 | bad_parm = true; | |
2987 | else | |
2988 | push_parm_decl (parm); | |
27bf414c JM |
2989 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
2990 | { | |
2991 | tree new_attrs; | |
2992 | c_parser_consume_token (parser); | |
91d975b8 | 2993 | mark_forward_parm_decls (); |
27bf414c JM |
2994 | new_attrs = c_parser_attributes (parser); |
2995 | return c_parser_parms_list_declarator (parser, new_attrs); | |
2996 | } | |
2997 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2998 | { | |
2999 | c_parser_consume_token (parser); | |
09a1e889 | 3000 | if (bad_parm) |
27bf414c | 3001 | { |
09a1e889 SZ |
3002 | get_pending_sizes (); |
3003 | return NULL; | |
27bf414c | 3004 | } |
09a1e889 SZ |
3005 | else |
3006 | return get_parm_info (false); | |
27bf414c JM |
3007 | } |
3008 | if (!c_parser_require (parser, CPP_COMMA, | |
3009 | "expected %<;%>, %<,%> or %<)%>")) | |
3010 | { | |
3011 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
f007042e | 3012 | get_pending_sizes (); |
27bf414c JM |
3013 | return NULL; |
3014 | } | |
3015 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3016 | { | |
3017 | c_parser_consume_token (parser); | |
3018 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3019 | { | |
3020 | c_parser_consume_token (parser); | |
09a1e889 | 3021 | if (bad_parm) |
27bf414c | 3022 | { |
09a1e889 SZ |
3023 | get_pending_sizes (); |
3024 | return NULL; | |
27bf414c | 3025 | } |
09a1e889 SZ |
3026 | else |
3027 | return get_parm_info (true); | |
27bf414c JM |
3028 | } |
3029 | else | |
3030 | { | |
3031 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3032 | "expected %<)%>"); | |
f007042e | 3033 | get_pending_sizes (); |
27bf414c JM |
3034 | return NULL; |
3035 | } | |
3036 | } | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | /* Parse a parameter declaration. ATTRS are the attributes at the | |
3041 | start of the declaration if it is the first parameter. */ | |
3042 | ||
3043 | static struct c_parm * | |
3044 | c_parser_parameter_declaration (c_parser *parser, tree attrs) | |
3045 | { | |
3046 | struct c_declspecs *specs; | |
3047 | struct c_declarator *declarator; | |
3048 | tree prefix_attrs; | |
3049 | tree postfix_attrs = NULL_TREE; | |
3050 | bool dummy = false; | |
3051 | if (!c_parser_next_token_starts_declspecs (parser)) | |
3052 | { | |
09a1e889 SZ |
3053 | c_token *token = c_parser_peek_token (parser); |
3054 | if (parser->error) | |
3055 | return NULL; | |
3056 | c_parser_set_source_position_from_token (token); | |
3057 | if (token->type == CPP_NAME | |
3058 | && c_parser_peek_2nd_token (parser)->type != CPP_COMMA | |
3059 | && c_parser_peek_2nd_token (parser)->type != CPP_CLOSE_PAREN) | |
3060 | { | |
3061 | error ("unknown type name %qE", token->value); | |
3062 | parser->error = true; | |
3063 | } | |
27bf414c JM |
3064 | /* ??? In some Objective-C cases '...' isn't applicable so there |
3065 | should be a different message. */ | |
09a1e889 SZ |
3066 | else |
3067 | c_parser_error (parser, | |
3068 | "expected declaration specifiers or %<...%>"); | |
27bf414c JM |
3069 | c_parser_skip_to_end_of_parameter (parser); |
3070 | return NULL; | |
3071 | } | |
3072 | specs = build_null_declspecs (); | |
3073 | if (attrs) | |
3074 | { | |
3075 | declspecs_add_attrs (specs, attrs); | |
3076 | attrs = NULL_TREE; | |
3077 | } | |
3078 | c_parser_declspecs (parser, specs, true, true, true); | |
3079 | finish_declspecs (specs); | |
3080 | pending_xref_error (); | |
3081 | prefix_attrs = specs->attrs; | |
3082 | specs->attrs = NULL_TREE; | |
9e5b2115 PB |
3083 | declarator = c_parser_declarator (parser, |
3084 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3085 | C_DTR_PARM, &dummy); |
3086 | if (declarator == NULL) | |
3087 | { | |
3088 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
3089 | return NULL; | |
3090 | } | |
3091 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3092 | postfix_attrs = c_parser_attributes (parser); | |
3093 | return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs), | |
3094 | declarator); | |
3095 | } | |
3096 | ||
3097 | /* Parse a string literal in an asm expression. It should not be | |
3098 | translated, and wide string literals are an error although | |
3099 | permitted by the syntax. This is a GNU extension. | |
3100 | ||
3101 | asm-string-literal: | |
3102 | string-literal | |
3103 | ||
3104 | ??? At present, following the old parser, the caller needs to have | |
46c2514e TT |
3105 | set lex_untranslated_string to 1. It would be better to follow the |
3106 | C++ parser rather than using this kludge. */ | |
27bf414c JM |
3107 | |
3108 | static tree | |
3109 | c_parser_asm_string_literal (c_parser *parser) | |
3110 | { | |
3111 | tree str; | |
3112 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
3113 | { | |
3114 | str = c_parser_peek_token (parser)->value; | |
3115 | c_parser_consume_token (parser); | |
3116 | } | |
3117 | else if (c_parser_next_token_is (parser, CPP_WSTRING)) | |
3118 | { | |
3ba09659 AH |
3119 | error_at (c_parser_peek_token (parser)->location, |
3120 | "wide string literal in %<asm%>"); | |
27bf414c JM |
3121 | str = build_string (1, ""); |
3122 | c_parser_consume_token (parser); | |
3123 | } | |
3124 | else | |
3125 | { | |
3126 | c_parser_error (parser, "expected string literal"); | |
3127 | str = NULL_TREE; | |
3128 | } | |
3129 | return str; | |
3130 | } | |
3131 | ||
3132 | /* Parse a simple asm expression. This is used in restricted | |
3133 | contexts, where a full expression with inputs and outputs does not | |
3134 | make sense. This is a GNU extension. | |
3135 | ||
3136 | simple-asm-expr: | |
3137 | asm ( asm-string-literal ) | |
3138 | */ | |
3139 | ||
3140 | static tree | |
3141 | c_parser_simple_asm_expr (c_parser *parser) | |
3142 | { | |
3143 | tree str; | |
3144 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); | |
3145 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3146 | lex_untranslated_string kludge. */ |
3147 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3148 | c_parser_consume_token (parser); |
3149 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3150 | { | |
46c2514e | 3151 | parser->lex_untranslated_string = false; |
27bf414c JM |
3152 | return NULL_TREE; |
3153 | } | |
3154 | str = c_parser_asm_string_literal (parser); | |
46c2514e | 3155 | parser->lex_untranslated_string = false; |
27bf414c JM |
3156 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
3157 | { | |
3158 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3159 | return NULL_TREE; | |
3160 | } | |
3161 | return str; | |
3162 | } | |
3163 | ||
3164 | /* Parse (possibly empty) attributes. This is a GNU extension. | |
3165 | ||
3166 | attributes: | |
3167 | empty | |
3168 | attributes attribute | |
3169 | ||
3170 | attribute: | |
3171 | __attribute__ ( ( attribute-list ) ) | |
3172 | ||
3173 | attribute-list: | |
3174 | attrib | |
3175 | attribute_list , attrib | |
3176 | ||
3177 | attrib: | |
3178 | empty | |
3179 | any-word | |
3180 | any-word ( identifier ) | |
3181 | any-word ( identifier , nonempty-expr-list ) | |
3182 | any-word ( expr-list ) | |
3183 | ||
3184 | where the "identifier" must not be declared as a type, and | |
3185 | "any-word" may be any identifier (including one declared as a | |
3186 | type), a reserved word storage class specifier, type specifier or | |
3187 | type qualifier. ??? This still leaves out most reserved keywords | |
3188 | (following the old parser), shouldn't we include them, and why not | |
3189 | allow identifiers declared as types to start the arguments? */ | |
3190 | ||
3191 | static tree | |
3192 | c_parser_attributes (c_parser *parser) | |
3193 | { | |
3194 | tree attrs = NULL_TREE; | |
3195 | while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3196 | { | |
3197 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3198 | lex_untranslated_string kludge. */ |
3199 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3200 | c_parser_consume_token (parser); |
3201 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3202 | { | |
46c2514e | 3203 | parser->lex_untranslated_string = false; |
27bf414c JM |
3204 | return attrs; |
3205 | } | |
3206 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3207 | { | |
46c2514e | 3208 | parser->lex_untranslated_string = false; |
27bf414c JM |
3209 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
3210 | return attrs; | |
3211 | } | |
3212 | /* Parse the attribute list. */ | |
3213 | while (c_parser_next_token_is (parser, CPP_COMMA) | |
3214 | || c_parser_next_token_is (parser, CPP_NAME) | |
3215 | || c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3216 | { | |
3217 | tree attr, attr_name, attr_args; | |
bbbbb16a | 3218 | VEC(tree,gc) *expr_list; |
27bf414c JM |
3219 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
3220 | { | |
3221 | c_parser_consume_token (parser); | |
3222 | continue; | |
3223 | } | |
3224 | if (c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3225 | { | |
3226 | /* ??? See comment above about what keywords are | |
3227 | accepted here. */ | |
3228 | bool ok; | |
3229 | switch (c_parser_peek_token (parser)->keyword) | |
3230 | { | |
3231 | case RID_STATIC: | |
3232 | case RID_UNSIGNED: | |
3233 | case RID_LONG: | |
a6766312 | 3234 | case RID_INT128: |
27bf414c JM |
3235 | case RID_CONST: |
3236 | case RID_EXTERN: | |
3237 | case RID_REGISTER: | |
3238 | case RID_TYPEDEF: | |
3239 | case RID_SHORT: | |
3240 | case RID_INLINE: | |
3241 | case RID_VOLATILE: | |
3242 | case RID_SIGNED: | |
3243 | case RID_AUTO: | |
3244 | case RID_RESTRICT: | |
3245 | case RID_COMPLEX: | |
3246 | case RID_THREAD: | |
3247 | case RID_INT: | |
3248 | case RID_CHAR: | |
3249 | case RID_FLOAT: | |
3250 | case RID_DOUBLE: | |
3251 | case RID_VOID: | |
9a8ce21f JG |
3252 | case RID_DFLOAT32: |
3253 | case RID_DFLOAT64: | |
3254 | case RID_DFLOAT128: | |
27bf414c | 3255 | case RID_BOOL: |
ab22c1fa CF |
3256 | case RID_FRACT: |
3257 | case RID_ACCUM: | |
3258 | case RID_SAT: | |
27bf414c JM |
3259 | ok = true; |
3260 | break; | |
3261 | default: | |
3262 | ok = false; | |
3263 | break; | |
3264 | } | |
3265 | if (!ok) | |
3266 | break; | |
5dc4a7f4 JJ |
3267 | /* Accept __attribute__((__const)) as __attribute__((const)) |
3268 | etc. */ | |
3269 | attr_name | |
3270 | = ridpointers[(int) c_parser_peek_token (parser)->keyword]; | |
27bf414c | 3271 | } |
5dc4a7f4 JJ |
3272 | else |
3273 | attr_name = c_parser_peek_token (parser)->value; | |
27bf414c JM |
3274 | c_parser_consume_token (parser); |
3275 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) | |
3276 | { | |
3277 | attr = build_tree_list (attr_name, NULL_TREE); | |
3278 | attrs = chainon (attrs, attr); | |
3279 | continue; | |
3280 | } | |
3281 | c_parser_consume_token (parser); | |
3282 | /* Parse the attribute contents. If they start with an | |
3283 | identifier which is followed by a comma or close | |
3284 | parenthesis, then the arguments start with that | |
91ebb981 IS |
3285 | identifier; otherwise they are an expression list. |
3286 | In objective-c the identifier may be a classname. */ | |
27bf414c | 3287 | if (c_parser_next_token_is (parser, CPP_NAME) |
91ebb981 IS |
3288 | && (c_parser_peek_token (parser)->id_kind == C_ID_ID |
3289 | || (c_dialect_objc () | |
3290 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3291 | && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA) |
3292 | || (c_parser_peek_2nd_token (parser)->type | |
3293 | == CPP_CLOSE_PAREN))) | |
3294 | { | |
3295 | tree arg1 = c_parser_peek_token (parser)->value; | |
3296 | c_parser_consume_token (parser); | |
3297 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3298 | attr_args = build_tree_list (NULL_TREE, arg1); | |
3299 | else | |
3300 | { | |
bbbbb16a | 3301 | tree tree_list; |
27bf414c | 3302 | c_parser_consume_token (parser); |
bbbbb16a | 3303 | expr_list = c_parser_expr_list (parser, false, true, NULL); |
c166b898 | 3304 | tree_list = build_tree_list_vec (expr_list); |
bbbbb16a | 3305 | attr_args = tree_cons (NULL_TREE, arg1, tree_list); |
c166b898 | 3306 | release_tree_vector (expr_list); |
27bf414c JM |
3307 | } |
3308 | } | |
3309 | else | |
3310 | { | |
3311 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3312 | attr_args = NULL_TREE; | |
3313 | else | |
bbbbb16a ILT |
3314 | { |
3315 | expr_list = c_parser_expr_list (parser, false, true, NULL); | |
c166b898 ILT |
3316 | attr_args = build_tree_list_vec (expr_list); |
3317 | release_tree_vector (expr_list); | |
bbbbb16a | 3318 | } |
27bf414c JM |
3319 | } |
3320 | attr = build_tree_list (attr_name, attr_args); | |
3321 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3322 | c_parser_consume_token (parser); | |
3323 | else | |
3324 | { | |
46c2514e | 3325 | parser->lex_untranslated_string = false; |
27bf414c JM |
3326 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3327 | "expected %<)%>"); | |
3328 | return attrs; | |
3329 | } | |
3330 | attrs = chainon (attrs, attr); | |
3331 | } | |
3332 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3333 | c_parser_consume_token (parser); | |
3334 | else | |
3335 | { | |
46c2514e | 3336 | parser->lex_untranslated_string = false; |
27bf414c JM |
3337 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3338 | "expected %<)%>"); | |
3339 | return attrs; | |
3340 | } | |
3341 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3342 | c_parser_consume_token (parser); | |
3343 | else | |
3344 | { | |
46c2514e | 3345 | parser->lex_untranslated_string = false; |
27bf414c JM |
3346 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3347 | "expected %<)%>"); | |
3348 | return attrs; | |
3349 | } | |
46c2514e | 3350 | parser->lex_untranslated_string = false; |
27bf414c JM |
3351 | } |
3352 | return attrs; | |
3353 | } | |
3354 | ||
3355 | /* Parse a type name (C90 6.5.5, C99 6.7.6). | |
3356 | ||
3357 | type-name: | |
3358 | specifier-qualifier-list abstract-declarator[opt] | |
3359 | */ | |
3360 | ||
3361 | static struct c_type_name * | |
3362 | c_parser_type_name (c_parser *parser) | |
3363 | { | |
3364 | struct c_declspecs *specs = build_null_declspecs (); | |
3365 | struct c_declarator *declarator; | |
3366 | struct c_type_name *ret; | |
3367 | bool dummy = false; | |
3368 | c_parser_declspecs (parser, specs, false, true, true); | |
3369 | if (!specs->declspecs_seen_p) | |
3370 | { | |
3371 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
3372 | return NULL; | |
3373 | } | |
3374 | pending_xref_error (); | |
3375 | finish_declspecs (specs); | |
9e5b2115 PB |
3376 | declarator = c_parser_declarator (parser, |
3377 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3378 | C_DTR_ABSTRACT, &dummy); |
3379 | if (declarator == NULL) | |
3380 | return NULL; | |
3381 | ret = XOBNEW (&parser_obstack, struct c_type_name); | |
3382 | ret->specs = specs; | |
3383 | ret->declarator = declarator; | |
3384 | return ret; | |
3385 | } | |
3386 | ||
3387 | /* Parse an initializer (C90 6.5.7, C99 6.7.8). | |
3388 | ||
3389 | initializer: | |
3390 | assignment-expression | |
3391 | { initializer-list } | |
3392 | { initializer-list , } | |
3393 | ||
3394 | initializer-list: | |
3395 | designation[opt] initializer | |
3396 | initializer-list , designation[opt] initializer | |
3397 | ||
3398 | designation: | |
3399 | designator-list = | |
3400 | ||
3401 | designator-list: | |
3402 | designator | |
3403 | designator-list designator | |
3404 | ||
3405 | designator: | |
3406 | array-designator | |
3407 | . identifier | |
3408 | ||
3409 | array-designator: | |
3410 | [ constant-expression ] | |
3411 | ||
3412 | GNU extensions: | |
3413 | ||
3414 | initializer: | |
3415 | { } | |
3416 | ||
3417 | designation: | |
3418 | array-designator | |
3419 | identifier : | |
3420 | ||
3421 | array-designator: | |
3422 | [ constant-expression ... constant-expression ] | |
3423 | ||
3424 | Any expression without commas is accepted in the syntax for the | |
3425 | constant-expressions, with non-constant expressions rejected later. | |
3426 | ||
3427 | This function is only used for top-level initializers; for nested | |
3428 | ones, see c_parser_initval. */ | |
3429 | ||
3430 | static struct c_expr | |
3431 | c_parser_initializer (c_parser *parser) | |
3432 | { | |
3433 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
3434 | return c_parser_braced_init (parser, NULL_TREE, false); | |
3435 | else | |
46bdb9cf JM |
3436 | { |
3437 | struct c_expr ret; | |
c2255bc4 | 3438 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
3439 | ret = c_parser_expr_no_commas (parser, NULL); |
3440 | if (TREE_CODE (ret.value) != STRING_CST | |
3441 | && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 3442 | ret = default_function_array_read_conversion (loc, ret); |
46bdb9cf JM |
3443 | return ret; |
3444 | } | |
27bf414c JM |
3445 | } |
3446 | ||
3447 | /* Parse a braced initializer list. TYPE is the type specified for a | |
3448 | compound literal, and NULL_TREE for other initializers and for | |
3449 | nested braced lists. NESTED_P is true for nested braced lists, | |
3450 | false for the list of a compound literal or the list that is the | |
3451 | top-level initializer in a declaration. */ | |
3452 | ||
3453 | static struct c_expr | |
3454 | c_parser_braced_init (c_parser *parser, tree type, bool nested_p) | |
3455 | { | |
a1e3b3d9 LB |
3456 | struct c_expr ret; |
3457 | struct obstack braced_init_obstack; | |
c7412148 | 3458 | location_t brace_loc = c_parser_peek_token (parser)->location; |
a1e3b3d9 | 3459 | gcc_obstack_init (&braced_init_obstack); |
27bf414c JM |
3460 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); |
3461 | c_parser_consume_token (parser); | |
3462 | if (nested_p) | |
a1e3b3d9 | 3463 | push_init_level (0, &braced_init_obstack); |
27bf414c JM |
3464 | else |
3465 | really_start_incremental_init (type); | |
3466 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3467 | { | |
509c9d60 | 3468 | pedwarn (brace_loc, OPT_pedantic, "ISO C forbids empty initializer braces"); |
27bf414c JM |
3469 | } |
3470 | else | |
3471 | { | |
3472 | /* Parse a non-empty initializer list, possibly with a trailing | |
3473 | comma. */ | |
3474 | while (true) | |
3475 | { | |
a1e3b3d9 | 3476 | c_parser_initelt (parser, &braced_init_obstack); |
27bf414c JM |
3477 | if (parser->error) |
3478 | break; | |
3479 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
3480 | c_parser_consume_token (parser); | |
3481 | else | |
3482 | break; | |
3483 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3484 | break; | |
3485 | } | |
3486 | } | |
3487 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
3488 | { | |
27bf414c JM |
3489 | ret.value = error_mark_node; |
3490 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 3491 | ret.original_type = NULL; |
27bf414c | 3492 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>"); |
a1e3b3d9 LB |
3493 | pop_init_level (0, &braced_init_obstack); |
3494 | obstack_free (&braced_init_obstack, NULL); | |
27bf414c JM |
3495 | return ret; |
3496 | } | |
3497 | c_parser_consume_token (parser); | |
a1e3b3d9 LB |
3498 | ret = pop_init_level (0, &braced_init_obstack); |
3499 | obstack_free (&braced_init_obstack, NULL); | |
3500 | return ret; | |
27bf414c JM |
3501 | } |
3502 | ||
3503 | /* Parse a nested initializer, including designators. */ | |
3504 | ||
3505 | static void | |
a1e3b3d9 | 3506 | c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack) |
27bf414c JM |
3507 | { |
3508 | /* Parse any designator or designator list. A single array | |
3509 | designator may have the subsequent "=" omitted in GNU C, but a | |
3510 | longer list or a structure member designator may not. */ | |
3511 | if (c_parser_next_token_is (parser, CPP_NAME) | |
3512 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
3513 | { | |
3514 | /* Old-style structure member designator. */ | |
a1e3b3d9 LB |
3515 | set_init_label (c_parser_peek_token (parser)->value, |
3516 | braced_init_obstack); | |
fcf73884 | 3517 | /* Use the colon as the error location. */ |
b8698a0f | 3518 | pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_pedantic, |
509c9d60 | 3519 | "obsolete use of designated initializer with %<:%>"); |
27bf414c JM |
3520 | c_parser_consume_token (parser); |
3521 | c_parser_consume_token (parser); | |
3522 | } | |
3523 | else | |
3524 | { | |
3525 | /* des_seen is 0 if there have been no designators, 1 if there | |
3526 | has been a single array designator and 2 otherwise. */ | |
3527 | int des_seen = 0; | |
c7412148 | 3528 | /* Location of a designator. */ |
922f2908 | 3529 | location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3530 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE) |
3531 | || c_parser_next_token_is (parser, CPP_DOT)) | |
3532 | { | |
3533 | int des_prev = des_seen; | |
c7412148 TT |
3534 | if (!des_seen) |
3535 | des_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
3536 | if (des_seen < 2) |
3537 | des_seen++; | |
3538 | if (c_parser_next_token_is (parser, CPP_DOT)) | |
3539 | { | |
3540 | des_seen = 2; | |
3541 | c_parser_consume_token (parser); | |
3542 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
3543 | { | |
a1e3b3d9 LB |
3544 | set_init_label (c_parser_peek_token (parser)->value, |
3545 | braced_init_obstack); | |
27bf414c JM |
3546 | c_parser_consume_token (parser); |
3547 | } | |
3548 | else | |
3549 | { | |
3550 | struct c_expr init; | |
3551 | init.value = error_mark_node; | |
3552 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3553 | init.original_type = NULL; |
27bf414c JM |
3554 | c_parser_error (parser, "expected identifier"); |
3555 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3556 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3557 | return; |
3558 | } | |
3559 | } | |
3560 | else | |
3561 | { | |
3562 | tree first, second; | |
922f2908 | 3563 | location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3564 | /* ??? Following the old parser, [ objc-receiver |
3565 | objc-message-args ] is accepted as an initializer, | |
3566 | being distinguished from a designator by what follows | |
3567 | the first assignment expression inside the square | |
3568 | brackets, but after a first array designator a | |
3569 | subsequent square bracket is for Objective-C taken to | |
3570 | start an expression, using the obsolete form of | |
3571 | designated initializer without '=', rather than | |
3572 | possibly being a second level of designation: in LALR | |
3573 | terms, the '[' is shifted rather than reducing | |
3574 | designator to designator-list. */ | |
3575 | if (des_prev == 1 && c_dialect_objc ()) | |
3576 | { | |
3577 | des_seen = des_prev; | |
3578 | break; | |
3579 | } | |
3580 | if (des_prev == 0 && c_dialect_objc ()) | |
3581 | { | |
3582 | /* This might be an array designator or an | |
3583 | Objective-C message expression. If the former, | |
3584 | continue parsing here; if the latter, parse the | |
3585 | remainder of the initializer given the starting | |
3586 | primary-expression. ??? It might make sense to | |
3587 | distinguish when des_prev == 1 as well; see | |
3588 | previous comment. */ | |
3589 | tree rec, args; | |
3590 | struct c_expr mexpr; | |
3591 | c_parser_consume_token (parser); | |
3592 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
3593 | && ((c_parser_peek_token (parser)->id_kind | |
3594 | == C_ID_TYPENAME) | |
3595 | || (c_parser_peek_token (parser)->id_kind | |
3596 | == C_ID_CLASSNAME))) | |
3597 | { | |
3598 | /* Type name receiver. */ | |
3599 | tree id = c_parser_peek_token (parser)->value; | |
3600 | c_parser_consume_token (parser); | |
3601 | rec = objc_get_class_reference (id); | |
3602 | goto parse_message_args; | |
3603 | } | |
3604 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3605 | mark_exp_read (first); |
27bf414c JM |
3606 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS) |
3607 | || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3608 | goto array_desig_after_first; | |
3609 | /* Expression receiver. So far only one part | |
3610 | without commas has been parsed; there might be | |
3611 | more of the expression. */ | |
3612 | rec = first; | |
3613 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
3614 | { | |
f2a71bbc | 3615 | struct c_expr next; |
c2255bc4 AH |
3616 | location_t comma_loc, exp_loc; |
3617 | comma_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 3618 | c_parser_consume_token (parser); |
c2255bc4 | 3619 | exp_loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 3620 | next = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
3621 | next = default_function_array_read_conversion (exp_loc, |
3622 | next); | |
c2255bc4 | 3623 | rec = build_compound_expr (comma_loc, rec, next.value); |
27bf414c JM |
3624 | } |
3625 | parse_message_args: | |
3626 | /* Now parse the objc-message-args. */ | |
3627 | args = c_parser_objc_message_args (parser); | |
3628 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3629 | "expected %<]%>"); | |
3630 | mexpr.value | |
3631 | = objc_build_message_expr (build_tree_list (rec, args)); | |
3632 | mexpr.original_code = ERROR_MARK; | |
6866c6e8 | 3633 | mexpr.original_type = NULL; |
27bf414c JM |
3634 | /* Now parse and process the remainder of the |
3635 | initializer, starting with this message | |
3636 | expression as a primary-expression. */ | |
a1e3b3d9 | 3637 | c_parser_initval (parser, &mexpr, braced_init_obstack); |
27bf414c JM |
3638 | return; |
3639 | } | |
3640 | c_parser_consume_token (parser); | |
3641 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3642 | mark_exp_read (first); |
27bf414c JM |
3643 | array_desig_after_first: |
3644 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3645 | { | |
c7412148 | 3646 | ellipsis_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3647 | c_parser_consume_token (parser); |
3648 | second = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3649 | mark_exp_read (second); |
27bf414c JM |
3650 | } |
3651 | else | |
3652 | second = NULL_TREE; | |
3653 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3654 | { | |
3655 | c_parser_consume_token (parser); | |
a1e3b3d9 | 3656 | set_init_index (first, second, braced_init_obstack); |
fcf73884 | 3657 | if (second) |
b8698a0f | 3658 | pedwarn (ellipsis_loc, OPT_pedantic, |
509c9d60 | 3659 | "ISO C forbids specifying range of elements to initialize"); |
27bf414c JM |
3660 | } |
3661 | else | |
3662 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3663 | "expected %<]%>"); | |
3664 | } | |
3665 | } | |
3666 | if (des_seen >= 1) | |
3667 | { | |
3668 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
3669 | { | |
fcf73884 | 3670 | if (!flag_isoc99) |
b8698a0f | 3671 | pedwarn (des_loc, OPT_pedantic, |
509c9d60 | 3672 | "ISO C90 forbids specifying subobject to initialize"); |
27bf414c JM |
3673 | c_parser_consume_token (parser); |
3674 | } | |
3675 | else | |
3676 | { | |
3677 | if (des_seen == 1) | |
b8698a0f | 3678 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 3679 | "obsolete use of designated initializer without %<=%>"); |
27bf414c JM |
3680 | else |
3681 | { | |
3682 | struct c_expr init; | |
3683 | init.value = error_mark_node; | |
3684 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3685 | init.original_type = NULL; |
27bf414c JM |
3686 | c_parser_error (parser, "expected %<=%>"); |
3687 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3688 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3689 | return; |
3690 | } | |
3691 | } | |
3692 | } | |
3693 | } | |
a1e3b3d9 | 3694 | c_parser_initval (parser, NULL, braced_init_obstack); |
27bf414c JM |
3695 | } |
3696 | ||
3697 | /* Parse a nested initializer; as c_parser_initializer but parses | |
3698 | initializers within braced lists, after any designators have been | |
3699 | applied. If AFTER is not NULL then it is an Objective-C message | |
3700 | expression which is the primary-expression starting the | |
3701 | initializer. */ | |
3702 | ||
3703 | static void | |
a1e3b3d9 LB |
3704 | c_parser_initval (c_parser *parser, struct c_expr *after, |
3705 | struct obstack * braced_init_obstack) | |
27bf414c JM |
3706 | { |
3707 | struct c_expr init; | |
3708 | gcc_assert (!after || c_dialect_objc ()); | |
3709 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after) | |
3710 | init = c_parser_braced_init (parser, NULL_TREE, true); | |
3711 | else | |
46bdb9cf | 3712 | { |
c2255bc4 | 3713 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
3714 | init = c_parser_expr_no_commas (parser, after); |
3715 | if (init.value != NULL_TREE | |
3716 | && TREE_CODE (init.value) != STRING_CST | |
3717 | && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 3718 | init = default_function_array_read_conversion (loc, init); |
46bdb9cf | 3719 | } |
a1e3b3d9 | 3720 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3721 | } |
3722 | ||
3723 | /* Parse a compound statement (possibly a function body) (C90 6.6.2, | |
3724 | C99 6.8.2). | |
3725 | ||
3726 | compound-statement: | |
3727 | { block-item-list[opt] } | |
3728 | { label-declarations block-item-list } | |
3729 | ||
3730 | block-item-list: | |
3731 | block-item | |
3732 | block-item-list block-item | |
3733 | ||
3734 | block-item: | |
3735 | nested-declaration | |
3736 | statement | |
3737 | ||
3738 | nested-declaration: | |
3739 | declaration | |
3740 | ||
3741 | GNU extensions: | |
3742 | ||
3743 | compound-statement: | |
3744 | { label-declarations block-item-list } | |
3745 | ||
3746 | nested-declaration: | |
3747 | __extension__ nested-declaration | |
3748 | nested-function-definition | |
3749 | ||
3750 | label-declarations: | |
3751 | label-declaration | |
3752 | label-declarations label-declaration | |
3753 | ||
3754 | label-declaration: | |
3755 | __label__ identifier-list ; | |
3756 | ||
3757 | Allowing the mixing of declarations and code is new in C99. The | |
3758 | GNU syntax also permits (not shown above) labels at the end of | |
3759 | compound statements, which yield an error. We don't allow labels | |
3760 | on declarations; this might seem like a natural extension, but | |
3761 | there would be a conflict between attributes on the label and | |
3762 | prefix attributes on the declaration. ??? The syntax follows the | |
3763 | old parser in requiring something after label declarations. | |
3764 | Although they are erroneous if the labels declared aren't defined, | |
953ff289 | 3765 | is it useful for the syntax to be this way? |
b8698a0f | 3766 | |
953ff289 | 3767 | OpenMP: |
b8698a0f | 3768 | |
953ff289 DN |
3769 | block-item: |
3770 | openmp-directive | |
3771 | ||
3772 | openmp-directive: | |
3773 | barrier-directive | |
3774 | flush-directive */ | |
27bf414c JM |
3775 | |
3776 | static tree | |
3777 | c_parser_compound_statement (c_parser *parser) | |
3778 | { | |
3779 | tree stmt; | |
c2255bc4 AH |
3780 | location_t brace_loc; |
3781 | brace_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 3782 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
5600f233 JM |
3783 | { |
3784 | /* Ensure a scope is entered and left anyway to avoid confusion | |
3785 | if we have just prepared to enter a function body. */ | |
3786 | stmt = c_begin_compound_stmt (true); | |
c2255bc4 | 3787 | c_end_compound_stmt (brace_loc, stmt, true); |
5600f233 JM |
3788 | return error_mark_node; |
3789 | } | |
27bf414c JM |
3790 | stmt = c_begin_compound_stmt (true); |
3791 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 3792 | return c_end_compound_stmt (brace_loc, stmt, true); |
27bf414c JM |
3793 | } |
3794 | ||
3795 | /* Parse a compound statement except for the opening brace. This is | |
3796 | used for parsing both compound statements and statement expressions | |
3797 | (which follow different paths to handling the opening). */ | |
3798 | ||
3799 | static void | |
3800 | c_parser_compound_statement_nostart (c_parser *parser) | |
3801 | { | |
3802 | bool last_stmt = false; | |
3803 | bool last_label = false; | |
6ec637a4 | 3804 | bool save_valid_for_pragma = valid_location_for_stdc_pragma_p (); |
3ba09659 | 3805 | location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3806 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) |
3807 | { | |
3808 | c_parser_consume_token (parser); | |
3809 | return; | |
3810 | } | |
6ec637a4 | 3811 | mark_valid_location_for_stdc_pragma (true); |
27bf414c JM |
3812 | if (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
3813 | { | |
3814 | /* Read zero or more forward-declarations for labels that nested | |
3815 | functions can jump to. */ | |
6ec637a4 | 3816 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
3817 | while (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
3818 | { | |
c2255bc4 | 3819 | label_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3820 | c_parser_consume_token (parser); |
3821 | /* Any identifiers, including those declared as type names, | |
3822 | are OK here. */ | |
3823 | while (true) | |
3824 | { | |
3825 | tree label; | |
3826 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
3827 | { | |
3828 | c_parser_error (parser, "expected identifier"); | |
3829 | break; | |
3830 | } | |
3831 | label | |
3832 | = declare_label (c_parser_peek_token (parser)->value); | |
3833 | C_DECLARED_LABEL_FLAG (label) = 1; | |
c2255bc4 | 3834 | add_stmt (build_stmt (label_loc, DECL_EXPR, label)); |
27bf414c JM |
3835 | c_parser_consume_token (parser); |
3836 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
3837 | c_parser_consume_token (parser); | |
3838 | else | |
3839 | break; | |
3840 | } | |
3841 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
3842 | } | |
c2255bc4 | 3843 | pedwarn (label_loc, OPT_pedantic, "ISO C forbids label declarations"); |
27bf414c JM |
3844 | } |
3845 | /* We must now have at least one statement, label or declaration. */ | |
3846 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3847 | { | |
6ec637a4 | 3848 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
27bf414c JM |
3849 | c_parser_error (parser, "expected declaration or statement"); |
3850 | c_parser_consume_token (parser); | |
3851 | return; | |
3852 | } | |
3853 | while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
3854 | { | |
3855 | location_t loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
3856 | if (c_parser_next_token_is_keyword (parser, RID_CASE) |
3857 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
3858 | || (c_parser_next_token_is (parser, CPP_NAME) | |
3859 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
3860 | { | |
c7412148 TT |
3861 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) |
3862 | label_loc = c_parser_peek_2nd_token (parser)->location; | |
3863 | else | |
3864 | label_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
3865 | last_label = true; |
3866 | last_stmt = false; | |
6ec637a4 | 3867 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
3868 | c_parser_label (parser); |
3869 | } | |
3870 | else if (!last_label | |
32912286 | 3871 | && c_parser_next_token_starts_declaration (parser)) |
27bf414c JM |
3872 | { |
3873 | last_label = false; | |
6ec637a4 | 3874 | mark_valid_location_for_stdc_pragma (false); |
f05b9d93 | 3875 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
fcf73884 | 3876 | if (last_stmt) |
b8698a0f | 3877 | pedwarn_c90 (loc, |
509c9d60 | 3878 | (pedantic && !flag_isoc99) |
fcf73884 MLI |
3879 | ? OPT_pedantic |
3880 | : OPT_Wdeclaration_after_statement, | |
509c9d60 | 3881 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
3882 | last_stmt = false; |
3883 | } | |
3884 | else if (!last_label | |
3885 | && c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
3886 | { | |
3887 | /* __extension__ can start a declaration, but is also an | |
3888 | unary operator that can start an expression. Consume all | |
3889 | but the last of a possible series of __extension__ to | |
3890 | determine which. */ | |
3891 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
3892 | && (c_parser_peek_2nd_token (parser)->keyword | |
3893 | == RID_EXTENSION)) | |
3894 | c_parser_consume_token (parser); | |
32912286 | 3895 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
3896 | { |
3897 | int ext; | |
3898 | ext = disable_extension_diagnostics (); | |
3899 | c_parser_consume_token (parser); | |
3900 | last_label = false; | |
6ec637a4 | 3901 | mark_valid_location_for_stdc_pragma (false); |
32912286 | 3902 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 | 3903 | true, NULL); |
27bf414c JM |
3904 | /* Following the old parser, __extension__ does not |
3905 | disable this diagnostic. */ | |
3906 | restore_extension_diagnostics (ext); | |
fcf73884 | 3907 | if (last_stmt) |
509c9d60 | 3908 | pedwarn_c90 (loc, (pedantic && !flag_isoc99) |
fcf73884 MLI |
3909 | ? OPT_pedantic |
3910 | : OPT_Wdeclaration_after_statement, | |
509c9d60 | 3911 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
3912 | last_stmt = false; |
3913 | } | |
3914 | else | |
3915 | goto statement; | |
3916 | } | |
bc4071dd RH |
3917 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
3918 | { | |
3919 | /* External pragmas, and some omp pragmas, are not associated | |
3920 | with regular c code, and so are not to be considered statements | |
3921 | syntactically. This ensures that the user doesn't put them | |
3922 | places that would turn into syntax errors if the directive | |
3923 | were ignored. */ | |
3924 | if (c_parser_pragma (parser, pragma_compound)) | |
3925 | last_label = false, last_stmt = true; | |
3926 | } | |
3927 | else if (c_parser_next_token_is (parser, CPP_EOF)) | |
3928 | { | |
6ec637a4 | 3929 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
bc4071dd RH |
3930 | c_parser_error (parser, "expected declaration or statement"); |
3931 | return; | |
3932 | } | |
b4b56033 MLI |
3933 | else if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
3934 | { | |
b8698a0f | 3935 | if (parser->in_if_block) |
b4b56033 | 3936 | { |
6ec637a4 | 3937 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
3ba09659 | 3938 | error_at (loc, """expected %<}%> before %<else%>"); |
b4b56033 MLI |
3939 | return; |
3940 | } | |
b8698a0f | 3941 | else |
b4b56033 | 3942 | { |
3ba09659 | 3943 | error_at (loc, "%<else%> without a previous %<if%>"); |
b4b56033 MLI |
3944 | c_parser_consume_token (parser); |
3945 | continue; | |
3946 | } | |
3947 | } | |
27bf414c JM |
3948 | else |
3949 | { | |
3950 | statement: | |
3951 | last_label = false; | |
3952 | last_stmt = true; | |
6ec637a4 | 3953 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
3954 | c_parser_statement_after_labels (parser); |
3955 | } | |
2c14ae9a VR |
3956 | |
3957 | parser->error = false; | |
27bf414c JM |
3958 | } |
3959 | if (last_label) | |
3ba09659 | 3960 | error_at (label_loc, "label at end of compound statement"); |
27bf414c | 3961 | c_parser_consume_token (parser); |
6ec637a4 JJ |
3962 | /* Restore the value we started with. */ |
3963 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); | |
27bf414c JM |
3964 | } |
3965 | ||
3966 | /* Parse a label (C90 6.6.1, C99 6.8.1). | |
3967 | ||
3968 | label: | |
3969 | identifier : attributes[opt] | |
3970 | case constant-expression : | |
3971 | default : | |
3972 | ||
3973 | GNU extensions: | |
3974 | ||
3975 | label: | |
3976 | case constant-expression ... constant-expression : | |
3977 | ||
3978 | The use of attributes on labels is a GNU extension. The syntax in | |
3979 | GNU C accepts any expressions without commas, non-constant | |
3980 | expressions being rejected later. */ | |
3981 | ||
3982 | static void | |
3983 | c_parser_label (c_parser *parser) | |
3984 | { | |
3985 | location_t loc1 = c_parser_peek_token (parser)->location; | |
3986 | tree label = NULL_TREE; | |
3987 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) | |
3988 | { | |
3989 | tree exp1, exp2; | |
3990 | c_parser_consume_token (parser); | |
3991 | exp1 = c_parser_expr_no_commas (parser, NULL).value; | |
3992 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
3993 | { | |
3994 | c_parser_consume_token (parser); | |
c2255bc4 | 3995 | label = do_case (loc1, exp1, NULL_TREE); |
27bf414c JM |
3996 | } |
3997 | else if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3998 | { | |
3999 | c_parser_consume_token (parser); | |
4000 | exp2 = c_parser_expr_no_commas (parser, NULL).value; | |
4001 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4002 | label = do_case (loc1, exp1, exp2); |
27bf414c JM |
4003 | } |
4004 | else | |
4005 | c_parser_error (parser, "expected %<:%> or %<...%>"); | |
4006 | } | |
4007 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
4008 | { | |
4009 | c_parser_consume_token (parser); | |
4010 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4011 | label = do_case (loc1, NULL_TREE, NULL_TREE); |
27bf414c JM |
4012 | } |
4013 | else | |
4014 | { | |
4015 | tree name = c_parser_peek_token (parser)->value; | |
4016 | tree tlab; | |
27bf414c | 4017 | tree attrs; |
c7412148 | 4018 | location_t loc2 = c_parser_peek_token (parser)->location; |
27bf414c JM |
4019 | gcc_assert (c_parser_next_token_is (parser, CPP_NAME)); |
4020 | c_parser_consume_token (parser); | |
4021 | gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); | |
27bf414c JM |
4022 | c_parser_consume_token (parser); |
4023 | attrs = c_parser_attributes (parser); | |
4024 | tlab = define_label (loc2, name); | |
4025 | if (tlab) | |
4026 | { | |
4027 | decl_attributes (&tlab, attrs, 0); | |
c2255bc4 | 4028 | label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab)); |
27bf414c JM |
4029 | } |
4030 | } | |
4031 | if (label) | |
3d57f0f0 | 4032 | { |
32912286 | 4033 | if (c_parser_next_token_starts_declaration (parser) |
3d57f0f0 MLI |
4034 | && !(c_parser_next_token_is (parser, CPP_NAME) |
4035 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4036 | { | |
3ba09659 AH |
4037 | error_at (c_parser_peek_token (parser)->location, |
4038 | "a label can only be part of a statement and " | |
4039 | "a declaration is not a statement"); | |
b8698a0f | 4040 | c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, |
32912286 | 4041 | /*static_assert_ok*/ true, |
3d57f0f0 | 4042 | /*nested*/ true, /*empty_ok*/ false, |
f05b9d93 | 4043 | /*start_attr_ok*/ true, NULL); |
3d57f0f0 MLI |
4044 | } |
4045 | } | |
27bf414c JM |
4046 | } |
4047 | ||
4048 | /* Parse a statement (C90 6.6, C99 6.8). | |
4049 | ||
4050 | statement: | |
4051 | labeled-statement | |
4052 | compound-statement | |
4053 | expression-statement | |
4054 | selection-statement | |
4055 | iteration-statement | |
4056 | jump-statement | |
4057 | ||
4058 | labeled-statement: | |
4059 | label statement | |
4060 | ||
4061 | expression-statement: | |
4062 | expression[opt] ; | |
4063 | ||
4064 | selection-statement: | |
4065 | if-statement | |
4066 | switch-statement | |
4067 | ||
4068 | iteration-statement: | |
4069 | while-statement | |
4070 | do-statement | |
4071 | for-statement | |
4072 | ||
4073 | jump-statement: | |
4074 | goto identifier ; | |
4075 | continue ; | |
4076 | break ; | |
4077 | return expression[opt] ; | |
4078 | ||
4079 | GNU extensions: | |
4080 | ||
4081 | statement: | |
4082 | asm-statement | |
4083 | ||
4084 | jump-statement: | |
4085 | goto * expression ; | |
4086 | ||
4087 | Objective-C: | |
4088 | ||
4089 | statement: | |
4090 | objc-throw-statement | |
4091 | objc-try-catch-statement | |
4092 | objc-synchronized-statement | |
4093 | ||
4094 | objc-throw-statement: | |
4095 | @throw expression ; | |
4096 | @throw ; | |
953ff289 DN |
4097 | |
4098 | OpenMP: | |
4099 | ||
4100 | statement: | |
4101 | openmp-construct | |
4102 | ||
4103 | openmp-construct: | |
4104 | parallel-construct | |
4105 | for-construct | |
4106 | sections-construct | |
4107 | single-construct | |
4108 | parallel-for-construct | |
4109 | parallel-sections-construct | |
4110 | master-construct | |
4111 | critical-construct | |
4112 | atomic-construct | |
4113 | ordered-construct | |
4114 | ||
4115 | parallel-construct: | |
4116 | parallel-directive structured-block | |
4117 | ||
4118 | for-construct: | |
4119 | for-directive iteration-statement | |
4120 | ||
4121 | sections-construct: | |
4122 | sections-directive section-scope | |
4123 | ||
4124 | single-construct: | |
4125 | single-directive structured-block | |
4126 | ||
4127 | parallel-for-construct: | |
4128 | parallel-for-directive iteration-statement | |
4129 | ||
4130 | parallel-sections-construct: | |
4131 | parallel-sections-directive section-scope | |
4132 | ||
4133 | master-construct: | |
4134 | master-directive structured-block | |
4135 | ||
4136 | critical-construct: | |
4137 | critical-directive structured-block | |
4138 | ||
4139 | atomic-construct: | |
4140 | atomic-directive expression-statement | |
4141 | ||
4142 | ordered-construct: | |
4143 | ordered-directive structured-block */ | |
27bf414c JM |
4144 | |
4145 | static void | |
4146 | c_parser_statement (c_parser *parser) | |
4147 | { | |
4148 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4149 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4150 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4151 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4152 | c_parser_label (parser); | |
4153 | c_parser_statement_after_labels (parser); | |
4154 | } | |
4155 | ||
4156 | /* Parse a statement, other than a labeled statement. */ | |
4157 | ||
4158 | static void | |
4159 | c_parser_statement_after_labels (c_parser *parser) | |
4160 | { | |
4161 | location_t loc = c_parser_peek_token (parser)->location; | |
4162 | tree stmt = NULL_TREE; | |
b4b56033 MLI |
4163 | bool in_if_block = parser->in_if_block; |
4164 | parser->in_if_block = false; | |
27bf414c JM |
4165 | switch (c_parser_peek_token (parser)->type) |
4166 | { | |
4167 | case CPP_OPEN_BRACE: | |
4168 | add_stmt (c_parser_compound_statement (parser)); | |
4169 | break; | |
4170 | case CPP_KEYWORD: | |
4171 | switch (c_parser_peek_token (parser)->keyword) | |
4172 | { | |
4173 | case RID_IF: | |
4174 | c_parser_if_statement (parser); | |
4175 | break; | |
4176 | case RID_SWITCH: | |
4177 | c_parser_switch_statement (parser); | |
4178 | break; | |
4179 | case RID_WHILE: | |
4180 | c_parser_while_statement (parser); | |
4181 | break; | |
4182 | case RID_DO: | |
4183 | c_parser_do_statement (parser); | |
4184 | break; | |
4185 | case RID_FOR: | |
4186 | c_parser_for_statement (parser); | |
4187 | break; | |
4188 | case RID_GOTO: | |
4189 | c_parser_consume_token (parser); | |
4190 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4191 | { | |
c2255bc4 AH |
4192 | stmt = c_finish_goto_label (loc, |
4193 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4194 | c_parser_consume_token (parser); |
4195 | } | |
4196 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
4197 | { | |
84628aa8 JJ |
4198 | tree val; |
4199 | ||
27bf414c | 4200 | c_parser_consume_token (parser); |
84628aa8 JJ |
4201 | val = c_parser_expression (parser).value; |
4202 | mark_exp_read (val); | |
4203 | stmt = c_finish_goto_ptr (loc, val); | |
27bf414c JM |
4204 | } |
4205 | else | |
4206 | c_parser_error (parser, "expected identifier or %<*%>"); | |
4207 | goto expect_semicolon; | |
4208 | case RID_CONTINUE: | |
4209 | c_parser_consume_token (parser); | |
c2255bc4 | 4210 | stmt = c_finish_bc_stmt (loc, &c_cont_label, false); |
27bf414c JM |
4211 | goto expect_semicolon; |
4212 | case RID_BREAK: | |
4213 | c_parser_consume_token (parser); | |
c2255bc4 | 4214 | stmt = c_finish_bc_stmt (loc, &c_break_label, true); |
27bf414c JM |
4215 | goto expect_semicolon; |
4216 | case RID_RETURN: | |
4217 | c_parser_consume_token (parser); | |
4218 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4219 | { | |
c2255bc4 | 4220 | stmt = c_finish_return (loc, NULL_TREE, NULL_TREE); |
27bf414c JM |
4221 | c_parser_consume_token (parser); |
4222 | } | |
4223 | else | |
4224 | { | |
bbbbb16a | 4225 | struct c_expr expr = c_parser_expression_conv (parser); |
ebfbbdc5 | 4226 | mark_exp_read (expr.value); |
c2255bc4 | 4227 | stmt = c_finish_return (loc, expr.value, expr.original_type); |
27bf414c JM |
4228 | goto expect_semicolon; |
4229 | } | |
4230 | break; | |
4231 | case RID_ASM: | |
4232 | stmt = c_parser_asm_statement (parser); | |
4233 | break; | |
49b91f05 | 4234 | case RID_AT_THROW: |
27bf414c JM |
4235 | gcc_assert (c_dialect_objc ()); |
4236 | c_parser_consume_token (parser); | |
4237 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4238 | { | |
c2255bc4 | 4239 | stmt = objc_build_throw_stmt (loc, NULL_TREE); |
27bf414c JM |
4240 | c_parser_consume_token (parser); |
4241 | } | |
4242 | else | |
4243 | { | |
928c19bb JM |
4244 | tree expr = c_parser_expression (parser).value; |
4245 | expr = c_fully_fold (expr, false, NULL); | |
c2255bc4 | 4246 | stmt = objc_build_throw_stmt (loc, expr); |
27bf414c JM |
4247 | goto expect_semicolon; |
4248 | } | |
4249 | break; | |
49b91f05 | 4250 | case RID_AT_TRY: |
27bf414c JM |
4251 | gcc_assert (c_dialect_objc ()); |
4252 | c_parser_objc_try_catch_statement (parser); | |
4253 | break; | |
4254 | case RID_AT_SYNCHRONIZED: | |
4255 | gcc_assert (c_dialect_objc ()); | |
4256 | c_parser_objc_synchronized_statement (parser); | |
4257 | break; | |
4258 | default: | |
4259 | goto expr_stmt; | |
4260 | } | |
4261 | break; | |
4262 | case CPP_SEMICOLON: | |
4263 | c_parser_consume_token (parser); | |
4264 | break; | |
4265 | case CPP_CLOSE_PAREN: | |
4266 | case CPP_CLOSE_SQUARE: | |
4267 | /* Avoid infinite loop in error recovery: | |
4268 | c_parser_skip_until_found stops at a closing nesting | |
4269 | delimiter without consuming it, but here we need to consume | |
4270 | it to proceed further. */ | |
4271 | c_parser_error (parser, "expected statement"); | |
4272 | c_parser_consume_token (parser); | |
4273 | break; | |
bc4071dd RH |
4274 | case CPP_PRAGMA: |
4275 | c_parser_pragma (parser, pragma_stmt); | |
4276 | break; | |
27bf414c JM |
4277 | default: |
4278 | expr_stmt: | |
c2255bc4 | 4279 | stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value); |
27bf414c JM |
4280 | expect_semicolon: |
4281 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4282 | break; | |
4283 | } | |
4284 | /* Two cases cannot and do not have line numbers associated: If stmt | |
4285 | is degenerate, such as "2;", then stmt is an INTEGER_CST, which | |
4286 | cannot hold line numbers. But that's OK because the statement | |
4287 | will either be changed to a MODIFY_EXPR during gimplification of | |
4288 | the statement expr, or discarded. If stmt was compound, but | |
4289 | without new variables, we will have skipped the creation of a | |
4290 | BIND and will have a bare STATEMENT_LIST. But that's OK because | |
4291 | (recursively) all of the component statements should already have | |
4292 | line numbers assigned. ??? Can we discard no-op statements | |
4293 | earlier? */ | |
c2255bc4 AH |
4294 | if (CAN_HAVE_LOCATION_P (stmt) |
4295 | && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION) | |
4296 | SET_EXPR_LOCATION (stmt, loc); | |
b4b56033 MLI |
4297 | |
4298 | parser->in_if_block = in_if_block; | |
27bf414c JM |
4299 | } |
4300 | ||
ca085fd7 MLI |
4301 | /* Parse the condition from an if, do, while or for statements. */ |
4302 | ||
4303 | static tree | |
4304 | c_parser_condition (c_parser *parser) | |
4305 | { | |
c2255bc4 | 4306 | location_t loc = c_parser_peek_token (parser)->location; |
ca085fd7 | 4307 | tree cond; |
928c19bb JM |
4308 | cond = c_parser_expression_conv (parser).value; |
4309 | cond = c_objc_common_truthvalue_conversion (loc, cond); | |
4310 | cond = c_fully_fold (cond, false, NULL); | |
ca085fd7 MLI |
4311 | if (warn_sequence_point) |
4312 | verify_sequence_points (cond); | |
4313 | return cond; | |
4314 | } | |
4315 | ||
27bf414c JM |
4316 | /* Parse a parenthesized condition from an if, do or while statement. |
4317 | ||
4318 | condition: | |
4319 | ( expression ) | |
4320 | */ | |
4321 | static tree | |
4322 | c_parser_paren_condition (c_parser *parser) | |
4323 | { | |
27bf414c JM |
4324 | tree cond; |
4325 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4326 | return error_mark_node; | |
ca085fd7 | 4327 | cond = c_parser_condition (parser); |
27bf414c JM |
4328 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4329 | return cond; | |
4330 | } | |
4331 | ||
4332 | /* Parse a statement which is a block in C99. */ | |
4333 | ||
4334 | static tree | |
4335 | c_parser_c99_block_statement (c_parser *parser) | |
4336 | { | |
4337 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4338 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c | 4339 | c_parser_statement (parser); |
c2255bc4 | 4340 | return c_end_compound_stmt (loc, block, flag_isoc99); |
27bf414c JM |
4341 | } |
4342 | ||
b4b56033 MLI |
4343 | /* Parse the body of an if statement. This is just parsing a |
4344 | statement but (a) it is a block in C99, (b) we track whether the | |
4345 | body is an if statement for the sake of -Wparentheses warnings, (c) | |
4346 | we handle an empty body specially for the sake of -Wempty-body | |
4347 | warnings, and (d) we call parser_compound_statement directly | |
4348 | because c_parser_statement_after_labels resets | |
4349 | parser->in_if_block. */ | |
27bf414c JM |
4350 | |
4351 | static tree | |
4352 | c_parser_if_body (c_parser *parser, bool *if_p) | |
4353 | { | |
4354 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4355 | location_t body_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4356 | while (c_parser_next_token_is_keyword (parser, RID_CASE) |
4357 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4358 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4359 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4360 | c_parser_label (parser); | |
4361 | *if_p = c_parser_next_token_is_keyword (parser, RID_IF); | |
62e00e94 | 4362 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
b4b56033 | 4363 | { |
626c34b5 | 4364 | location_t loc = c_parser_peek_token (parser)->location; |
c2255bc4 | 4365 | add_stmt (build_empty_stmt (loc)); |
b4b56033 | 4366 | c_parser_consume_token (parser); |
626c34b5 PB |
4367 | if (!c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4368 | warning_at (loc, OPT_Wempty_body, | |
4369 | "suggest braces around empty body in an %<if%> statement"); | |
b4b56033 MLI |
4370 | } |
4371 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
4372 | add_stmt (c_parser_compound_statement (parser)); | |
4373 | else | |
4374 | c_parser_statement_after_labels (parser); | |
c2255bc4 | 4375 | return c_end_compound_stmt (body_loc, block, flag_isoc99); |
b4b56033 MLI |
4376 | } |
4377 | ||
4378 | /* Parse the else body of an if statement. This is just parsing a | |
4379 | statement but (a) it is a block in C99, (b) we handle an empty body | |
4380 | specially for the sake of -Wempty-body warnings. */ | |
4381 | ||
4382 | static tree | |
4383 | c_parser_else_body (c_parser *parser) | |
4384 | { | |
c2255bc4 | 4385 | location_t else_loc = c_parser_peek_token (parser)->location; |
b4b56033 MLI |
4386 | tree block = c_begin_compound_stmt (flag_isoc99); |
4387 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4388 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4389 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4390 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4391 | c_parser_label (parser); | |
4392 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4393 | { | |
c2255bc4 AH |
4394 | location_t loc = c_parser_peek_token (parser)->location; |
4395 | warning_at (loc, | |
626c34b5 PB |
4396 | OPT_Wempty_body, |
4397 | "suggest braces around empty body in an %<else%> statement"); | |
c2255bc4 | 4398 | add_stmt (build_empty_stmt (loc)); |
b4b56033 MLI |
4399 | c_parser_consume_token (parser); |
4400 | } | |
b8698a0f | 4401 | else |
b4b56033 | 4402 | c_parser_statement_after_labels (parser); |
c2255bc4 | 4403 | return c_end_compound_stmt (else_loc, block, flag_isoc99); |
27bf414c JM |
4404 | } |
4405 | ||
4406 | /* Parse an if statement (C90 6.6.4, C99 6.8.4). | |
4407 | ||
4408 | if-statement: | |
4409 | if ( expression ) statement | |
4410 | if ( expression ) statement else statement | |
4411 | */ | |
4412 | ||
4413 | static void | |
4414 | c_parser_if_statement (c_parser *parser) | |
4415 | { | |
4416 | tree block; | |
4417 | location_t loc; | |
4418 | tree cond; | |
b4b56033 | 4419 | bool first_if = false; |
27bf414c | 4420 | tree first_body, second_body; |
b4b56033 MLI |
4421 | bool in_if_block; |
4422 | ||
27bf414c JM |
4423 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF)); |
4424 | c_parser_consume_token (parser); | |
4425 | block = c_begin_compound_stmt (flag_isoc99); | |
4426 | loc = c_parser_peek_token (parser)->location; | |
4427 | cond = c_parser_paren_condition (parser); | |
b4b56033 MLI |
4428 | in_if_block = parser->in_if_block; |
4429 | parser->in_if_block = true; | |
27bf414c | 4430 | first_body = c_parser_if_body (parser, &first_if); |
b4b56033 | 4431 | parser->in_if_block = in_if_block; |
27bf414c JM |
4432 | if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4433 | { | |
4434 | c_parser_consume_token (parser); | |
b4b56033 | 4435 | second_body = c_parser_else_body (parser); |
27bf414c JM |
4436 | } |
4437 | else | |
4438 | second_body = NULL_TREE; | |
4439 | c_finish_if_stmt (loc, cond, first_body, second_body, first_if); | |
c2255bc4 | 4440 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4441 | } |
4442 | ||
4443 | /* Parse a switch statement (C90 6.6.4, C99 6.8.4). | |
4444 | ||
4445 | switch-statement: | |
4446 | switch (expression) statement | |
4447 | */ | |
4448 | ||
4449 | static void | |
4450 | c_parser_switch_statement (c_parser *parser) | |
4451 | { | |
4452 | tree block, expr, body, save_break; | |
c2255bc4 AH |
4453 | location_t switch_loc = c_parser_peek_token (parser)->location; |
4454 | location_t switch_cond_loc; | |
27bf414c JM |
4455 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH)); |
4456 | c_parser_consume_token (parser); | |
4457 | block = c_begin_compound_stmt (flag_isoc99); | |
4458 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4459 | { | |
c2255bc4 | 4460 | switch_cond_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4461 | expr = c_parser_expression (parser).value; |
4462 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
4463 | } | |
4464 | else | |
c2255bc4 AH |
4465 | { |
4466 | switch_cond_loc = UNKNOWN_LOCATION; | |
4467 | expr = error_mark_node; | |
4468 | } | |
4469 | c_start_case (switch_loc, switch_cond_loc, expr); | |
27bf414c JM |
4470 | save_break = c_break_label; |
4471 | c_break_label = NULL_TREE; | |
4472 | body = c_parser_c99_block_statement (parser); | |
4473 | c_finish_case (body); | |
4474 | if (c_break_label) | |
c2255bc4 AH |
4475 | { |
4476 | location_t here = c_parser_peek_token (parser)->location; | |
4477 | tree t = build1 (LABEL_EXPR, void_type_node, c_break_label); | |
4478 | SET_EXPR_LOCATION (t, here); | |
4479 | add_stmt (t); | |
4480 | } | |
27bf414c | 4481 | c_break_label = save_break; |
c2255bc4 | 4482 | add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99)); |
27bf414c JM |
4483 | } |
4484 | ||
4485 | /* Parse a while statement (C90 6.6.5, C99 6.8.5). | |
4486 | ||
4487 | while-statement: | |
4488 | while (expression) statement | |
4489 | */ | |
4490 | ||
4491 | static void | |
4492 | c_parser_while_statement (c_parser *parser) | |
4493 | { | |
4494 | tree block, cond, body, save_break, save_cont; | |
4495 | location_t loc; | |
4496 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE)); | |
4497 | c_parser_consume_token (parser); | |
4498 | block = c_begin_compound_stmt (flag_isoc99); | |
4499 | loc = c_parser_peek_token (parser)->location; | |
4500 | cond = c_parser_paren_condition (parser); | |
4501 | save_break = c_break_label; | |
4502 | c_break_label = NULL_TREE; | |
4503 | save_cont = c_cont_label; | |
4504 | c_cont_label = NULL_TREE; | |
4505 | body = c_parser_c99_block_statement (parser); | |
4506 | c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true); | |
c2255bc4 | 4507 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4508 | c_break_label = save_break; |
4509 | c_cont_label = save_cont; | |
4510 | } | |
4511 | ||
4512 | /* Parse a do statement (C90 6.6.5, C99 6.8.5). | |
4513 | ||
4514 | do-statement: | |
4515 | do statement while ( expression ) ; | |
4516 | */ | |
4517 | ||
4518 | static void | |
4519 | c_parser_do_statement (c_parser *parser) | |
4520 | { | |
4521 | tree block, cond, body, save_break, save_cont, new_break, new_cont; | |
4522 | location_t loc; | |
4523 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO)); | |
4524 | c_parser_consume_token (parser); | |
62e00e94 | 4525 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3ba09659 AH |
4526 | warning_at (c_parser_peek_token (parser)->location, |
4527 | OPT_Wempty_body, | |
4528 | "suggest braces around empty body in %<do%> statement"); | |
27bf414c JM |
4529 | block = c_begin_compound_stmt (flag_isoc99); |
4530 | loc = c_parser_peek_token (parser)->location; | |
4531 | save_break = c_break_label; | |
4532 | c_break_label = NULL_TREE; | |
4533 | save_cont = c_cont_label; | |
4534 | c_cont_label = NULL_TREE; | |
4535 | body = c_parser_c99_block_statement (parser); | |
4536 | c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>"); | |
4537 | new_break = c_break_label; | |
4538 | c_break_label = save_break; | |
4539 | new_cont = c_cont_label; | |
4540 | c_cont_label = save_cont; | |
4541 | cond = c_parser_paren_condition (parser); | |
4542 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
4543 | c_parser_skip_to_end_of_block_or_statement (parser); | |
4544 | c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false); | |
c2255bc4 | 4545 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4546 | } |
4547 | ||
4548 | /* Parse a for statement (C90 6.6.5, C99 6.8.5). | |
4549 | ||
4550 | for-statement: | |
4551 | for ( expression[opt] ; expression[opt] ; expression[opt] ) statement | |
4552 | for ( nested-declaration expression[opt] ; expression[opt] ) statement | |
4553 | ||
4554 | The form with a declaration is new in C99. | |
4555 | ||
4556 | ??? In accordance with the old parser, the declaration may be a | |
4557 | nested function, which is then rejected in check_for_loop_decls, | |
4558 | but does it make any sense for this to be included in the grammar? | |
4559 | Note in particular that the nested function does not include a | |
4560 | trailing ';', whereas the "declaration" production includes one. | |
4561 | Also, can we reject bad declarations earlier and cheaper than | |
f05b9d93 NP |
4562 | check_for_loop_decls? |
4563 | ||
4564 | In Objective-C, there are two additional variants: | |
4565 | ||
4566 | foreach-statement: | |
4567 | for ( expression in expresssion ) statement | |
4568 | for ( declaration in expression ) statement | |
4569 | ||
4570 | This is inconsistent with C, because the second variant is allowed | |
4571 | even if c99 is not enabled. | |
4572 | ||
4573 | The rest of the comment documents these Objective-C foreach-statement. | |
4574 | ||
4575 | Here is the canonical example of the first variant: | |
4576 | for (object in array) { do something with object } | |
4577 | we call the first expression ("object") the "object_expression" and | |
4578 | the second expression ("array") the "collection_expression". | |
4579 | object_expression must be an lvalue of type "id" (a generic Objective-C | |
4580 | object) because the loop works by assigning to object_expression the | |
4581 | various objects from the collection_expression. collection_expression | |
4582 | must evaluate to something of type "id" which responds to the method | |
4583 | countByEnumeratingWithState:objects:count:. | |
4584 | ||
4585 | The canonical example of the second variant is: | |
4586 | for (id object in array) { do something with object } | |
4587 | which is completely equivalent to | |
4588 | { | |
4589 | id object; | |
4590 | for (object in array) { do something with object } | |
4591 | } | |
4592 | Note that initizializing 'object' in some way (eg, "for ((object = | |
4593 | xxx) in array) { do something with object }") is possibly | |
4594 | technically valid, but completely pointless as 'object' will be | |
4595 | assigned to something else as soon as the loop starts. We should | |
4596 | most likely reject it (TODO). | |
4597 | ||
4598 | The beginning of the Objective-C foreach-statement looks exactly | |
4599 | like the beginning of the for-statement, and we can tell it is a | |
4600 | foreach-statement only because the initial declaration or | |
4601 | expression is terminated by 'in' instead of ';'. | |
4602 | */ | |
27bf414c JM |
4603 | |
4604 | static void | |
4605 | c_parser_for_statement (c_parser *parser) | |
4606 | { | |
4607 | tree block, cond, incr, save_break, save_cont, body; | |
f05b9d93 NP |
4608 | /* The following are only used when parsing an ObjC foreach statement. */ |
4609 | tree object_expression, collection_expression; | |
c2255bc4 AH |
4610 | location_t loc = c_parser_peek_token (parser)->location; |
4611 | location_t for_loc = c_parser_peek_token (parser)->location; | |
f05b9d93 | 4612 | bool is_foreach_statement = false; |
27bf414c JM |
4613 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR)); |
4614 | c_parser_consume_token (parser); | |
f05b9d93 NP |
4615 | /* Open a compound statement in Objective-C as well, just in case this is |
4616 | as foreach expression. */ | |
4617 | block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ()); | |
91b90ead UB |
4618 | cond = error_mark_node; |
4619 | incr = error_mark_node; | |
27bf414c JM |
4620 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
4621 | { | |
4622 | /* Parse the initialization declaration or expression. */ | |
f05b9d93 | 4623 | object_expression = error_mark_node; |
27bf414c JM |
4624 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
4625 | { | |
4626 | c_parser_consume_token (parser); | |
c2255bc4 | 4627 | c_finish_expr_stmt (loc, NULL_TREE); |
27bf414c | 4628 | } |
32912286 | 4629 | else if (c_parser_next_token_starts_declaration (parser)) |
27bf414c | 4630 | { |
f05b9d93 NP |
4631 | parser->objc_could_be_foreach_context = true; |
4632 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, | |
4633 | &object_expression); | |
4634 | parser->objc_could_be_foreach_context = false; | |
4635 | ||
4636 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
4637 | { | |
4638 | c_parser_consume_token (parser); | |
4639 | is_foreach_statement = true; | |
4640 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
4641 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
4642 | } | |
4643 | else | |
4644 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
4645 | } |
4646 | else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4647 | { | |
4648 | /* __extension__ can start a declaration, but is also an | |
4649 | unary operator that can start an expression. Consume all | |
4650 | but the last of a possible series of __extension__ to | |
4651 | determine which. */ | |
4652 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4653 | && (c_parser_peek_2nd_token (parser)->keyword | |
4654 | == RID_EXTENSION)) | |
4655 | c_parser_consume_token (parser); | |
32912286 | 4656 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4657 | { |
4658 | int ext; | |
4659 | ext = disable_extension_diagnostics (); | |
4660 | c_parser_consume_token (parser); | |
f05b9d93 | 4661 | parser->objc_could_be_foreach_context = true; |
32912286 | 4662 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 NP |
4663 | true, &object_expression); |
4664 | parser->objc_could_be_foreach_context = false; | |
4665 | ||
27bf414c | 4666 | restore_extension_diagnostics (ext); |
f05b9d93 NP |
4667 | if (c_parser_next_token_is_keyword (parser, RID_IN)) |
4668 | { | |
4669 | c_parser_consume_token (parser); | |
4670 | is_foreach_statement = true; | |
4671 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
4672 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
4673 | } | |
4674 | else | |
4675 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
4676 | } |
4677 | else | |
4678 | goto init_expr; | |
4679 | } | |
4680 | else | |
4681 | { | |
4682 | init_expr: | |
f05b9d93 NP |
4683 | { |
4684 | tree init_expression; | |
4685 | parser->objc_could_be_foreach_context = true; | |
4686 | init_expression = c_parser_expression (parser).value; | |
4687 | parser->objc_could_be_foreach_context = false; | |
4688 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
4689 | { | |
4690 | c_parser_consume_token (parser); | |
4691 | is_foreach_statement = true; | |
4692 | if (! lvalue_p (init_expression)) | |
4693 | c_parser_error (parser, "invalid iterating variable in fast enumeration"); | |
4694 | object_expression = c_process_expr_stmt (loc, init_expression); | |
4695 | ||
4696 | } | |
4697 | else | |
4698 | { | |
4699 | c_finish_expr_stmt (loc, init_expression); | |
4700 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4701 | } | |
4702 | } | |
27bf414c | 4703 | } |
f05b9d93 NP |
4704 | /* Parse the loop condition. In the case of a foreach |
4705 | statement, there is no loop condition. */ | |
4706 | if (!is_foreach_statement) | |
27bf414c | 4707 | { |
f05b9d93 NP |
4708 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
4709 | { | |
4710 | c_parser_consume_token (parser); | |
4711 | cond = NULL_TREE; | |
4712 | } | |
4713 | else | |
4714 | { | |
4715 | cond = c_parser_condition (parser); | |
4716 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4717 | } | |
27bf414c | 4718 | } |
f05b9d93 NP |
4719 | /* Parse the increment expression (the third expression in a |
4720 | for-statement). In the case of a foreach-statement, this is | |
4721 | the expression that follows the 'in'. */ | |
4722 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
27bf414c | 4723 | { |
f05b9d93 NP |
4724 | if (is_foreach_statement) |
4725 | { | |
4726 | c_parser_error (parser, "missing collection in fast enumeration"); | |
4727 | collection_expression = error_mark_node; | |
4728 | } | |
4729 | else | |
4730 | incr = c_process_expr_stmt (loc, NULL_TREE); | |
27bf414c | 4731 | } |
27bf414c | 4732 | else |
f05b9d93 NP |
4733 | { |
4734 | if (is_foreach_statement) | |
4735 | collection_expression = c_process_expr_stmt (loc, c_parser_expression (parser).value); | |
4736 | else | |
4737 | incr = c_process_expr_stmt (loc, c_parser_expression (parser).value); | |
4738 | } | |
27bf414c JM |
4739 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4740 | } | |
27bf414c JM |
4741 | save_break = c_break_label; |
4742 | c_break_label = NULL_TREE; | |
4743 | save_cont = c_cont_label; | |
4744 | c_cont_label = NULL_TREE; | |
4745 | body = c_parser_c99_block_statement (parser); | |
f05b9d93 NP |
4746 | if (is_foreach_statement) |
4747 | objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label); | |
4748 | else | |
4749 | c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true); | |
4750 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ())); | |
27bf414c JM |
4751 | c_break_label = save_break; |
4752 | c_cont_label = save_cont; | |
4753 | } | |
4754 | ||
4755 | /* Parse an asm statement, a GNU extension. This is a full-blown asm | |
4756 | statement with inputs, outputs, clobbers, and volatile tag | |
4757 | allowed. | |
4758 | ||
4759 | asm-statement: | |
4760 | asm type-qualifier[opt] ( asm-argument ) ; | |
1c384bf1 | 4761 | asm type-qualifier[opt] goto ( asm-goto-argument ) ; |
27bf414c JM |
4762 | |
4763 | asm-argument: | |
4764 | asm-string-literal | |
4765 | asm-string-literal : asm-operands[opt] | |
4766 | asm-string-literal : asm-operands[opt] : asm-operands[opt] | |
1c384bf1 RH |
4767 | asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt] |
4768 | ||
4769 | asm-goto-argument: | |
4770 | asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \ | |
4771 | : asm-goto-operands | |
27bf414c JM |
4772 | |
4773 | Qualifiers other than volatile are accepted in the syntax but | |
4774 | warned for. */ | |
4775 | ||
4776 | static tree | |
4777 | c_parser_asm_statement (c_parser *parser) | |
4778 | { | |
1c384bf1 RH |
4779 | tree quals, str, outputs, inputs, clobbers, labels, ret; |
4780 | bool simple, is_goto; | |
c2255bc4 | 4781 | location_t asm_loc = c_parser_peek_token (parser)->location; |
1c384bf1 RH |
4782 | int section, nsections; |
4783 | ||
27bf414c JM |
4784 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); |
4785 | c_parser_consume_token (parser); | |
4786 | if (c_parser_next_token_is_keyword (parser, RID_VOLATILE)) | |
4787 | { | |
4788 | quals = c_parser_peek_token (parser)->value; | |
4789 | c_parser_consume_token (parser); | |
4790 | } | |
4791 | else if (c_parser_next_token_is_keyword (parser, RID_CONST) | |
4792 | || c_parser_next_token_is_keyword (parser, RID_RESTRICT)) | |
4793 | { | |
3ba09659 AH |
4794 | warning_at (c_parser_peek_token (parser)->location, |
4795 | 0, | |
4796 | "%E qualifier ignored on asm", | |
4797 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4798 | quals = NULL_TREE; |
4799 | c_parser_consume_token (parser); | |
4800 | } | |
4801 | else | |
4802 | quals = NULL_TREE; | |
1c384bf1 RH |
4803 | |
4804 | is_goto = false; | |
4805 | if (c_parser_next_token_is_keyword (parser, RID_GOTO)) | |
4806 | { | |
4807 | c_parser_consume_token (parser); | |
4808 | is_goto = true; | |
4809 | } | |
4810 | ||
27bf414c | 4811 | /* ??? Follow the C++ parser rather than using the |
46c2514e TT |
4812 | lex_untranslated_string kludge. */ |
4813 | parser->lex_untranslated_string = true; | |
1c384bf1 RH |
4814 | ret = NULL; |
4815 | ||
27bf414c | 4816 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
1c384bf1 RH |
4817 | goto error; |
4818 | ||
27bf414c | 4819 | str = c_parser_asm_string_literal (parser); |
b85eb797 | 4820 | if (str == NULL_TREE) |
1c384bf1 RH |
4821 | goto error_close_paren; |
4822 | ||
4823 | simple = true; | |
4824 | outputs = NULL_TREE; | |
4825 | inputs = NULL_TREE; | |
4826 | clobbers = NULL_TREE; | |
4827 | labels = NULL_TREE; | |
4828 | ||
4829 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
4830 | goto done_asm; | |
4831 | ||
4832 | /* Parse each colon-delimited section of operands. */ | |
4833 | nsections = 3 + is_goto; | |
4834 | for (section = 0; section < nsections; ++section) | |
b85eb797 | 4835 | { |
1c384bf1 RH |
4836 | if (!c_parser_require (parser, CPP_COLON, |
4837 | is_goto | |
4838 | ? "expected %<:%>" | |
4839 | : "expected %<:%> or %<)%>")) | |
4840 | goto error_close_paren; | |
4841 | ||
4842 | /* Once past any colon, we're no longer a simple asm. */ | |
4843 | simple = false; | |
4844 | ||
4845 | if ((!c_parser_next_token_is (parser, CPP_COLON) | |
4846 | && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4847 | || section == 3) | |
4848 | switch (section) | |
4849 | { | |
4850 | case 0: | |
4851 | /* For asm goto, we don't allow output operands, but reserve | |
4852 | the slot for a future extension that does allow them. */ | |
4853 | if (!is_goto) | |
4854 | outputs = c_parser_asm_operands (parser, false); | |
4855 | break; | |
4856 | case 1: | |
4857 | inputs = c_parser_asm_operands (parser, true); | |
4858 | break; | |
4859 | case 2: | |
4860 | clobbers = c_parser_asm_clobbers (parser); | |
4861 | break; | |
4862 | case 3: | |
4863 | labels = c_parser_asm_goto_operands (parser); | |
4864 | break; | |
4865 | default: | |
4866 | gcc_unreachable (); | |
4867 | } | |
4868 | ||
4869 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
4870 | goto done_asm; | |
27bf414c | 4871 | } |
1c384bf1 | 4872 | |
27bf414c | 4873 | done_asm: |
27bf414c JM |
4874 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
4875 | { | |
4876 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
1c384bf1 | 4877 | goto error; |
27bf414c | 4878 | } |
1c384bf1 | 4879 | |
27bf414c JM |
4880 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
4881 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1c384bf1 | 4882 | |
c2255bc4 | 4883 | ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs, |
1c384bf1 RH |
4884 | clobbers, labels, simple)); |
4885 | ||
4886 | error: | |
4887 | parser->lex_untranslated_string = false; | |
27bf414c | 4888 | return ret; |
1c384bf1 RH |
4889 | |
4890 | error_close_paren: | |
4891 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
4892 | goto error; | |
27bf414c JM |
4893 | } |
4894 | ||
46bdb9cf JM |
4895 | /* Parse asm operands, a GNU extension. If CONVERT_P (for inputs but |
4896 | not outputs), apply the default conversion of functions and arrays | |
4897 | to pointers. | |
27bf414c JM |
4898 | |
4899 | asm-operands: | |
4900 | asm-operand | |
4901 | asm-operands , asm-operand | |
4902 | ||
4903 | asm-operand: | |
4904 | asm-string-literal ( expression ) | |
4905 | [ identifier ] asm-string-literal ( expression ) | |
4906 | */ | |
4907 | ||
4908 | static tree | |
46bdb9cf | 4909 | c_parser_asm_operands (c_parser *parser, bool convert_p) |
27bf414c JM |
4910 | { |
4911 | tree list = NULL_TREE; | |
c2255bc4 | 4912 | location_t loc; |
27bf414c JM |
4913 | while (true) |
4914 | { | |
f2a71bbc JM |
4915 | tree name, str; |
4916 | struct c_expr expr; | |
27bf414c JM |
4917 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) |
4918 | { | |
4919 | c_parser_consume_token (parser); | |
4920 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4921 | { | |
4922 | tree id = c_parser_peek_token (parser)->value; | |
4923 | c_parser_consume_token (parser); | |
4924 | name = build_string (IDENTIFIER_LENGTH (id), | |
4925 | IDENTIFIER_POINTER (id)); | |
4926 | } | |
4927 | else | |
4928 | { | |
4929 | c_parser_error (parser, "expected identifier"); | |
4930 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
4931 | return NULL_TREE; | |
4932 | } | |
4933 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
4934 | "expected %<]%>"); | |
4935 | } | |
4936 | else | |
4937 | name = NULL_TREE; | |
4938 | str = c_parser_asm_string_literal (parser); | |
4939 | if (str == NULL_TREE) | |
4940 | return NULL_TREE; | |
46c2514e | 4941 | parser->lex_untranslated_string = false; |
27bf414c JM |
4942 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
4943 | { | |
46c2514e | 4944 | parser->lex_untranslated_string = true; |
27bf414c JM |
4945 | return NULL_TREE; |
4946 | } | |
c2255bc4 | 4947 | loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 4948 | expr = c_parser_expression (parser); |
ebfbbdc5 | 4949 | mark_exp_read (expr.value); |
46bdb9cf | 4950 | if (convert_p) |
c2255bc4 | 4951 | expr = default_function_array_conversion (loc, expr); |
928c19bb | 4952 | expr.value = c_fully_fold (expr.value, false, NULL); |
46c2514e | 4953 | parser->lex_untranslated_string = true; |
27bf414c JM |
4954 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
4955 | { | |
4956 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
4957 | return NULL_TREE; | |
4958 | } | |
4959 | list = chainon (list, build_tree_list (build_tree_list (name, str), | |
f2a71bbc | 4960 | expr.value)); |
27bf414c JM |
4961 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
4962 | c_parser_consume_token (parser); | |
4963 | else | |
4964 | break; | |
4965 | } | |
4966 | return list; | |
4967 | } | |
4968 | ||
4969 | /* Parse asm clobbers, a GNU extension. | |
4970 | ||
4971 | asm-clobbers: | |
4972 | asm-string-literal | |
4973 | asm-clobbers , asm-string-literal | |
4974 | */ | |
4975 | ||
4976 | static tree | |
4977 | c_parser_asm_clobbers (c_parser *parser) | |
4978 | { | |
4979 | tree list = NULL_TREE; | |
4980 | while (true) | |
4981 | { | |
4982 | tree str = c_parser_asm_string_literal (parser); | |
4983 | if (str) | |
4984 | list = tree_cons (NULL_TREE, str, list); | |
4985 | else | |
4986 | return NULL_TREE; | |
4987 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4988 | c_parser_consume_token (parser); | |
4989 | else | |
4990 | break; | |
4991 | } | |
4992 | return list; | |
4993 | } | |
4994 | ||
1c384bf1 | 4995 | /* Parse asm goto labels, a GNU extension. |
b8698a0f | 4996 | |
1c384bf1 RH |
4997 | asm-goto-operands: |
4998 | identifier | |
4999 | asm-goto-operands , identifier | |
5000 | */ | |
5001 | ||
5002 | static tree | |
5003 | c_parser_asm_goto_operands (c_parser *parser) | |
5004 | { | |
5005 | tree list = NULL_TREE; | |
5006 | while (true) | |
5007 | { | |
5008 | tree name, label; | |
5009 | ||
5010 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5011 | { | |
5012 | c_token *tok = c_parser_peek_token (parser); | |
5013 | name = tok->value; | |
5014 | label = lookup_label_for_goto (tok->location, name); | |
5015 | c_parser_consume_token (parser); | |
5016 | TREE_USED (label) = 1; | |
5017 | } | |
5018 | else | |
5019 | { | |
5020 | c_parser_error (parser, "expected identifier"); | |
5021 | return NULL_TREE; | |
5022 | } | |
5023 | ||
5024 | name = build_string (IDENTIFIER_LENGTH (name), | |
5025 | IDENTIFIER_POINTER (name)); | |
5026 | list = tree_cons (name, label, list); | |
5027 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5028 | c_parser_consume_token (parser); | |
5029 | else | |
5030 | return nreverse (list); | |
5031 | } | |
5032 | } | |
5033 | ||
27bf414c JM |
5034 | /* Parse an expression other than a compound expression; that is, an |
5035 | assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not | |
5036 | NULL then it is an Objective-C message expression which is the | |
5037 | primary-expression starting the expression as an initializer. | |
5038 | ||
5039 | assignment-expression: | |
5040 | conditional-expression | |
5041 | unary-expression assignment-operator assignment-expression | |
5042 | ||
5043 | assignment-operator: one of | |
5044 | = *= /= %= += -= <<= >>= &= ^= |= | |
5045 | ||
5046 | In GNU C we accept any conditional expression on the LHS and | |
5047 | diagnose the invalid lvalue rather than producing a syntax | |
5048 | error. */ | |
5049 | ||
5050 | static struct c_expr | |
5051 | c_parser_expr_no_commas (c_parser *parser, struct c_expr *after) | |
5052 | { | |
5053 | struct c_expr lhs, rhs, ret; | |
5054 | enum tree_code code; | |
c2255bc4 | 5055 | location_t op_location, exp_location; |
27bf414c JM |
5056 | gcc_assert (!after || c_dialect_objc ()); |
5057 | lhs = c_parser_conditional_expression (parser, after); | |
c9f9eb5d | 5058 | op_location = c_parser_peek_token (parser)->location; |
27bf414c JM |
5059 | switch (c_parser_peek_token (parser)->type) |
5060 | { | |
5061 | case CPP_EQ: | |
5062 | code = NOP_EXPR; | |
5063 | break; | |
5064 | case CPP_MULT_EQ: | |
5065 | code = MULT_EXPR; | |
5066 | break; | |
5067 | case CPP_DIV_EQ: | |
5068 | code = TRUNC_DIV_EXPR; | |
5069 | break; | |
5070 | case CPP_MOD_EQ: | |
5071 | code = TRUNC_MOD_EXPR; | |
5072 | break; | |
5073 | case CPP_PLUS_EQ: | |
5074 | code = PLUS_EXPR; | |
5075 | break; | |
5076 | case CPP_MINUS_EQ: | |
5077 | code = MINUS_EXPR; | |
5078 | break; | |
5079 | case CPP_LSHIFT_EQ: | |
5080 | code = LSHIFT_EXPR; | |
5081 | break; | |
5082 | case CPP_RSHIFT_EQ: | |
5083 | code = RSHIFT_EXPR; | |
5084 | break; | |
5085 | case CPP_AND_EQ: | |
5086 | code = BIT_AND_EXPR; | |
5087 | break; | |
5088 | case CPP_XOR_EQ: | |
5089 | code = BIT_XOR_EXPR; | |
5090 | break; | |
5091 | case CPP_OR_EQ: | |
5092 | code = BIT_IOR_EXPR; | |
5093 | break; | |
5094 | default: | |
5095 | return lhs; | |
5096 | } | |
5097 | c_parser_consume_token (parser); | |
c2255bc4 | 5098 | exp_location = c_parser_peek_token (parser)->location; |
27bf414c | 5099 | rhs = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 | 5100 | rhs = default_function_array_read_conversion (exp_location, rhs); |
32e8bb8e | 5101 | ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type, |
c2255bc4 AH |
5102 | code, exp_location, rhs.value, |
5103 | rhs.original_type); | |
27bf414c JM |
5104 | if (code == NOP_EXPR) |
5105 | ret.original_code = MODIFY_EXPR; | |
5106 | else | |
5107 | { | |
5108 | TREE_NO_WARNING (ret.value) = 1; | |
5109 | ret.original_code = ERROR_MARK; | |
5110 | } | |
6866c6e8 | 5111 | ret.original_type = NULL; |
27bf414c JM |
5112 | return ret; |
5113 | } | |
5114 | ||
5115 | /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER | |
5116 | is not NULL then it is an Objective-C message expression which is | |
5117 | the primary-expression starting the expression as an initializer. | |
5118 | ||
5119 | conditional-expression: | |
5120 | logical-OR-expression | |
5121 | logical-OR-expression ? expression : conditional-expression | |
5122 | ||
5123 | GNU extensions: | |
5124 | ||
5125 | conditional-expression: | |
5126 | logical-OR-expression ? : conditional-expression | |
5127 | */ | |
5128 | ||
5129 | static struct c_expr | |
5130 | c_parser_conditional_expression (c_parser *parser, struct c_expr *after) | |
5131 | { | |
5132 | struct c_expr cond, exp1, exp2, ret; | |
d166d4c3 | 5133 | location_t cond_loc, colon_loc, middle_loc; |
ba47d38d | 5134 | |
27bf414c | 5135 | gcc_assert (!after || c_dialect_objc ()); |
ba47d38d | 5136 | |
27bf414c | 5137 | cond = c_parser_binary_expression (parser, after); |
ba47d38d | 5138 | |
27bf414c JM |
5139 | if (c_parser_next_token_is_not (parser, CPP_QUERY)) |
5140 | return cond; | |
c2255bc4 | 5141 | cond_loc = c_parser_peek_token (parser)->location; |
ebfbbdc5 | 5142 | cond = default_function_array_read_conversion (cond_loc, cond); |
27bf414c JM |
5143 | c_parser_consume_token (parser); |
5144 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
5145 | { | |
8ce94e44 | 5146 | tree eptype = NULL_TREE; |
d166d4c3 AK |
5147 | |
5148 | middle_loc = c_parser_peek_token (parser)->location; | |
5149 | pedwarn (middle_loc, OPT_pedantic, | |
509c9d60 | 5150 | "ISO C forbids omitting the middle term of a ?: expression"); |
d166d4c3 | 5151 | warn_for_omitted_condop (middle_loc, cond.value); |
8ce94e44 JM |
5152 | if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR) |
5153 | { | |
5154 | eptype = TREE_TYPE (cond.value); | |
5155 | cond.value = TREE_OPERAND (cond.value, 0); | |
5156 | } | |
27bf414c | 5157 | /* Make sure first operand is calculated only once. */ |
928c19bb | 5158 | exp1.value = c_save_expr (default_conversion (cond.value)); |
8ce94e44 JM |
5159 | if (eptype) |
5160 | exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value); | |
6866c6e8 | 5161 | exp1.original_type = NULL; |
ba47d38d | 5162 | cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value); |
7d882b83 | 5163 | c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node; |
27bf414c JM |
5164 | } |
5165 | else | |
5166 | { | |
5167 | cond.value | |
85498824 | 5168 | = c_objc_common_truthvalue_conversion |
ba47d38d | 5169 | (cond_loc, default_conversion (cond.value)); |
7d882b83 | 5170 | c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node; |
46bdb9cf | 5171 | exp1 = c_parser_expression_conv (parser); |
ebfbbdc5 | 5172 | mark_exp_read (exp1.value); |
7d882b83 ILT |
5173 | c_inhibit_evaluation_warnings += |
5174 | ((cond.value == truthvalue_true_node) | |
5175 | - (cond.value == truthvalue_false_node)); | |
27bf414c | 5176 | } |
744aa42f ILT |
5177 | |
5178 | colon_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
5179 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
5180 | { | |
7d882b83 | 5181 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
27bf414c JM |
5182 | ret.value = error_mark_node; |
5183 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5184 | ret.original_type = NULL; |
27bf414c JM |
5185 | return ret; |
5186 | } | |
c2255bc4 AH |
5187 | { |
5188 | location_t exp2_loc = c_parser_peek_token (parser)->location; | |
5189 | exp2 = c_parser_conditional_expression (parser, NULL); | |
ebfbbdc5 | 5190 | exp2 = default_function_array_read_conversion (exp2_loc, exp2); |
c2255bc4 | 5191 | } |
7d882b83 | 5192 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
744aa42f | 5193 | ret.value = build_conditional_expr (colon_loc, cond.value, |
928c19bb | 5194 | cond.original_code == C_MAYBE_CONST_EXPR, |
d130ae11 ILT |
5195 | exp1.value, exp1.original_type, |
5196 | exp2.value, exp2.original_type); | |
27bf414c | 5197 | ret.original_code = ERROR_MARK; |
6866c6e8 ILT |
5198 | if (exp1.value == error_mark_node || exp2.value == error_mark_node) |
5199 | ret.original_type = NULL; | |
5200 | else | |
5201 | { | |
5202 | tree t1, t2; | |
5203 | ||
5204 | /* If both sides are enum type, the default conversion will have | |
5205 | made the type of the result be an integer type. We want to | |
5206 | remember the enum types we started with. */ | |
5207 | t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value); | |
5208 | t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value); | |
5209 | ret.original_type = ((t1 != error_mark_node | |
5210 | && t2 != error_mark_node | |
5211 | && (TYPE_MAIN_VARIANT (t1) | |
5212 | == TYPE_MAIN_VARIANT (t2))) | |
5213 | ? t1 | |
5214 | : NULL); | |
5215 | } | |
27bf414c JM |
5216 | return ret; |
5217 | } | |
5218 | ||
5219 | /* Parse a binary expression; that is, a logical-OR-expression (C90 | |
5220 | 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is | |
5221 | an Objective-C message expression which is the primary-expression | |
5222 | starting the expression as an initializer. | |
5223 | ||
5224 | multiplicative-expression: | |
5225 | cast-expression | |
5226 | multiplicative-expression * cast-expression | |
5227 | multiplicative-expression / cast-expression | |
5228 | multiplicative-expression % cast-expression | |
5229 | ||
5230 | additive-expression: | |
5231 | multiplicative-expression | |
5232 | additive-expression + multiplicative-expression | |
5233 | additive-expression - multiplicative-expression | |
5234 | ||
5235 | shift-expression: | |
5236 | additive-expression | |
5237 | shift-expression << additive-expression | |
5238 | shift-expression >> additive-expression | |
5239 | ||
5240 | relational-expression: | |
5241 | shift-expression | |
5242 | relational-expression < shift-expression | |
5243 | relational-expression > shift-expression | |
5244 | relational-expression <= shift-expression | |
5245 | relational-expression >= shift-expression | |
5246 | ||
5247 | equality-expression: | |
5248 | relational-expression | |
5249 | equality-expression == relational-expression | |
5250 | equality-expression != relational-expression | |
5251 | ||
5252 | AND-expression: | |
5253 | equality-expression | |
5254 | AND-expression & equality-expression | |
5255 | ||
5256 | exclusive-OR-expression: | |
5257 | AND-expression | |
5258 | exclusive-OR-expression ^ AND-expression | |
5259 | ||
5260 | inclusive-OR-expression: | |
5261 | exclusive-OR-expression | |
5262 | inclusive-OR-expression | exclusive-OR-expression | |
5263 | ||
5264 | logical-AND-expression: | |
5265 | inclusive-OR-expression | |
5266 | logical-AND-expression && inclusive-OR-expression | |
5267 | ||
5268 | logical-OR-expression: | |
5269 | logical-AND-expression | |
5270 | logical-OR-expression || logical-AND-expression | |
5271 | */ | |
5272 | ||
5273 | static struct c_expr | |
5274 | c_parser_binary_expression (c_parser *parser, struct c_expr *after) | |
5275 | { | |
5276 | /* A binary expression is parsed using operator-precedence parsing, | |
5277 | with the operands being cast expressions. All the binary | |
5278 | operators are left-associative. Thus a binary expression is of | |
5279 | form: | |
5280 | ||
5281 | E0 op1 E1 op2 E2 ... | |
5282 | ||
5283 | which we represent on a stack. On the stack, the precedence | |
5284 | levels are strictly increasing. When a new operator is | |
5285 | encountered of higher precedence than that at the top of the | |
5286 | stack, it is pushed; its LHS is the top expression, and its RHS | |
5287 | is everything parsed until it is popped. When a new operator is | |
5288 | encountered with precedence less than or equal to that at the top | |
5289 | of the stack, triples E[i-1] op[i] E[i] are popped and replaced | |
5290 | by the result of the operation until the operator at the top of | |
5291 | the stack has lower precedence than the new operator or there is | |
5292 | only one element on the stack; then the top expression is the LHS | |
5293 | of the new operator. In the case of logical AND and OR | |
7d882b83 ILT |
5294 | expressions, we also need to adjust c_inhibit_evaluation_warnings |
5295 | as appropriate when the operators are pushed and popped. */ | |
27bf414c JM |
5296 | |
5297 | /* The precedence levels, where 0 is a dummy lowest level used for | |
5298 | the bottom of the stack. */ | |
5299 | enum prec { | |
5300 | PREC_NONE, | |
5301 | PREC_LOGOR, | |
5302 | PREC_LOGAND, | |
5303 | PREC_BITOR, | |
5304 | PREC_BITXOR, | |
5305 | PREC_BITAND, | |
5306 | PREC_EQ, | |
5307 | PREC_REL, | |
5308 | PREC_SHIFT, | |
5309 | PREC_ADD, | |
5310 | PREC_MULT, | |
5311 | NUM_PRECS | |
5312 | }; | |
5313 | struct { | |
5314 | /* The expression at this stack level. */ | |
5315 | struct c_expr expr; | |
5316 | /* The precedence of the operator on its left, PREC_NONE at the | |
5317 | bottom of the stack. */ | |
5318 | enum prec prec; | |
5319 | /* The operation on its left. */ | |
5320 | enum tree_code op; | |
ca80e52b EB |
5321 | /* The source location of this operation. */ |
5322 | location_t loc; | |
27bf414c JM |
5323 | } stack[NUM_PRECS]; |
5324 | int sp; | |
ba47d38d | 5325 | /* Location of the binary operator. */ |
1f6d0c60 | 5326 | location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
5327 | #define POP \ |
5328 | do { \ | |
5329 | switch (stack[sp].op) \ | |
5330 | { \ | |
5331 | case TRUTH_ANDIF_EXPR: \ | |
7d882b83 ILT |
5332 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5333 | == truthvalue_false_node); \ | |
27bf414c JM |
5334 | break; \ |
5335 | case TRUTH_ORIF_EXPR: \ | |
7d882b83 ILT |
5336 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5337 | == truthvalue_true_node); \ | |
27bf414c JM |
5338 | break; \ |
5339 | default: \ | |
5340 | break; \ | |
5341 | } \ | |
f2a71bbc | 5342 | stack[sp - 1].expr \ |
ebfbbdc5 JJ |
5343 | = default_function_array_read_conversion (stack[sp - 1].loc, \ |
5344 | stack[sp - 1].expr); \ | |
f2a71bbc | 5345 | stack[sp].expr \ |
ebfbbdc5 JJ |
5346 | = default_function_array_read_conversion (stack[sp].loc, \ |
5347 | stack[sp].expr); \ | |
ca80e52b | 5348 | stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \ |
ba47d38d | 5349 | stack[sp].op, \ |
27bf414c JM |
5350 | stack[sp - 1].expr, \ |
5351 | stack[sp].expr); \ | |
5352 | sp--; \ | |
5353 | } while (0) | |
5354 | gcc_assert (!after || c_dialect_objc ()); | |
ca80e52b | 5355 | stack[0].loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5356 | stack[0].expr = c_parser_cast_expression (parser, after); |
5357 | stack[0].prec = PREC_NONE; | |
5358 | sp = 0; | |
5359 | while (true) | |
5360 | { | |
5361 | enum prec oprec; | |
5362 | enum tree_code ocode; | |
5363 | if (parser->error) | |
5364 | goto out; | |
5365 | switch (c_parser_peek_token (parser)->type) | |
5366 | { | |
5367 | case CPP_MULT: | |
5368 | oprec = PREC_MULT; | |
5369 | ocode = MULT_EXPR; | |
5370 | break; | |
5371 | case CPP_DIV: | |
5372 | oprec = PREC_MULT; | |
5373 | ocode = TRUNC_DIV_EXPR; | |
5374 | break; | |
5375 | case CPP_MOD: | |
5376 | oprec = PREC_MULT; | |
5377 | ocode = TRUNC_MOD_EXPR; | |
5378 | break; | |
5379 | case CPP_PLUS: | |
5380 | oprec = PREC_ADD; | |
5381 | ocode = PLUS_EXPR; | |
5382 | break; | |
5383 | case CPP_MINUS: | |
5384 | oprec = PREC_ADD; | |
5385 | ocode = MINUS_EXPR; | |
5386 | break; | |
5387 | case CPP_LSHIFT: | |
5388 | oprec = PREC_SHIFT; | |
5389 | ocode = LSHIFT_EXPR; | |
5390 | break; | |
5391 | case CPP_RSHIFT: | |
5392 | oprec = PREC_SHIFT; | |
5393 | ocode = RSHIFT_EXPR; | |
5394 | break; | |
5395 | case CPP_LESS: | |
5396 | oprec = PREC_REL; | |
5397 | ocode = LT_EXPR; | |
5398 | break; | |
5399 | case CPP_GREATER: | |
5400 | oprec = PREC_REL; | |
5401 | ocode = GT_EXPR; | |
5402 | break; | |
5403 | case CPP_LESS_EQ: | |
5404 | oprec = PREC_REL; | |
5405 | ocode = LE_EXPR; | |
5406 | break; | |
5407 | case CPP_GREATER_EQ: | |
5408 | oprec = PREC_REL; | |
5409 | ocode = GE_EXPR; | |
5410 | break; | |
5411 | case CPP_EQ_EQ: | |
5412 | oprec = PREC_EQ; | |
5413 | ocode = EQ_EXPR; | |
5414 | break; | |
5415 | case CPP_NOT_EQ: | |
5416 | oprec = PREC_EQ; | |
5417 | ocode = NE_EXPR; | |
5418 | break; | |
5419 | case CPP_AND: | |
5420 | oprec = PREC_BITAND; | |
5421 | ocode = BIT_AND_EXPR; | |
5422 | break; | |
5423 | case CPP_XOR: | |
5424 | oprec = PREC_BITXOR; | |
5425 | ocode = BIT_XOR_EXPR; | |
5426 | break; | |
5427 | case CPP_OR: | |
5428 | oprec = PREC_BITOR; | |
5429 | ocode = BIT_IOR_EXPR; | |
5430 | break; | |
5431 | case CPP_AND_AND: | |
5432 | oprec = PREC_LOGAND; | |
5433 | ocode = TRUTH_ANDIF_EXPR; | |
5434 | break; | |
5435 | case CPP_OR_OR: | |
5436 | oprec = PREC_LOGOR; | |
5437 | ocode = TRUTH_ORIF_EXPR; | |
5438 | break; | |
5439 | default: | |
5440 | /* Not a binary operator, so end of the binary | |
5441 | expression. */ | |
5442 | goto out; | |
5443 | } | |
ba47d38d | 5444 | binary_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5445 | c_parser_consume_token (parser); |
5446 | while (oprec <= stack[sp].prec) | |
5447 | POP; | |
5448 | switch (ocode) | |
5449 | { | |
5450 | case TRUTH_ANDIF_EXPR: | |
f2a71bbc | 5451 | stack[sp].expr |
ebfbbdc5 JJ |
5452 | = default_function_array_read_conversion (stack[sp].loc, |
5453 | stack[sp].expr); | |
85498824 | 5454 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5455 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5456 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5457 | == truthvalue_false_node); | |
27bf414c JM |
5458 | break; |
5459 | case TRUTH_ORIF_EXPR: | |
f2a71bbc | 5460 | stack[sp].expr |
ebfbbdc5 JJ |
5461 | = default_function_array_read_conversion (stack[sp].loc, |
5462 | stack[sp].expr); | |
85498824 | 5463 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5464 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5465 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5466 | == truthvalue_true_node); | |
27bf414c JM |
5467 | break; |
5468 | default: | |
5469 | break; | |
5470 | } | |
5471 | sp++; | |
ca80e52b | 5472 | stack[sp].loc = binary_loc; |
27bf414c JM |
5473 | stack[sp].expr = c_parser_cast_expression (parser, NULL); |
5474 | stack[sp].prec = oprec; | |
5475 | stack[sp].op = ocode; | |
c2255bc4 | 5476 | stack[sp].loc = binary_loc; |
27bf414c JM |
5477 | } |
5478 | out: | |
5479 | while (sp > 0) | |
5480 | POP; | |
5481 | return stack[0].expr; | |
5482 | #undef POP | |
5483 | } | |
5484 | ||
5485 | /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not | |
5486 | NULL then it is an Objective-C message expression which is the | |
5487 | primary-expression starting the expression as an initializer. | |
5488 | ||
5489 | cast-expression: | |
5490 | unary-expression | |
5491 | ( type-name ) unary-expression | |
5492 | */ | |
5493 | ||
5494 | static struct c_expr | |
5495 | c_parser_cast_expression (c_parser *parser, struct c_expr *after) | |
5496 | { | |
c2255bc4 | 5497 | location_t cast_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5498 | gcc_assert (!after || c_dialect_objc ()); |
5499 | if (after) | |
c2255bc4 AH |
5500 | return c_parser_postfix_expression_after_primary (parser, |
5501 | cast_loc, *after); | |
27bf414c JM |
5502 | /* If the expression begins with a parenthesized type name, it may |
5503 | be either a cast or a compound literal; we need to see whether | |
5504 | the next character is '{' to tell the difference. If not, it is | |
5505 | an unary expression. */ | |
5506 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
5507 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5508 | { | |
5509 | struct c_type_name *type_name; | |
5510 | struct c_expr ret; | |
f2a71bbc | 5511 | struct c_expr expr; |
27bf414c JM |
5512 | c_parser_consume_token (parser); |
5513 | type_name = c_parser_type_name (parser); | |
5514 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5515 | if (type_name == NULL) | |
5516 | { | |
5517 | ret.value = error_mark_node; | |
5518 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5519 | ret.original_type = NULL; |
27bf414c JM |
5520 | return ret; |
5521 | } | |
33c9159e AH |
5522 | |
5523 | /* Save casted types in the function's used types hash table. */ | |
8d8d1a28 | 5524 | used_types_insert (type_name->specs->type); |
33c9159e | 5525 | |
27bf414c | 5526 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
24b97832 | 5527 | return c_parser_postfix_expression_after_paren_type (parser, type_name, |
c2255bc4 AH |
5528 | cast_loc); |
5529 | { | |
5530 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
5531 | expr = c_parser_cast_expression (parser, NULL); | |
ebfbbdc5 | 5532 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 AH |
5533 | } |
5534 | ret.value = c_cast_expr (cast_loc, type_name, expr.value); | |
27bf414c | 5535 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5536 | ret.original_type = NULL; |
27bf414c JM |
5537 | return ret; |
5538 | } | |
5539 | else | |
5540 | return c_parser_unary_expression (parser); | |
5541 | } | |
5542 | ||
5543 | /* Parse an unary expression (C90 6.3.3, C99 6.5.3). | |
5544 | ||
5545 | unary-expression: | |
5546 | postfix-expression | |
5547 | ++ unary-expression | |
5548 | -- unary-expression | |
5549 | unary-operator cast-expression | |
5550 | sizeof unary-expression | |
5551 | sizeof ( type-name ) | |
5552 | ||
5553 | unary-operator: one of | |
5554 | & * + - ~ ! | |
5555 | ||
5556 | GNU extensions: | |
5557 | ||
5558 | unary-expression: | |
5559 | __alignof__ unary-expression | |
5560 | __alignof__ ( type-name ) | |
5561 | && identifier | |
5562 | ||
5563 | unary-operator: one of | |
5564 | __extension__ __real__ __imag__ | |
5565 | ||
5566 | In addition, the GNU syntax treats ++ and -- as unary operators, so | |
5567 | they may be applied to cast expressions with errors for non-lvalues | |
5568 | given later. */ | |
5569 | ||
5570 | static struct c_expr | |
5571 | c_parser_unary_expression (c_parser *parser) | |
5572 | { | |
5573 | int ext; | |
46bdb9cf | 5574 | struct c_expr ret, op; |
c2255bc4 AH |
5575 | location_t op_loc = c_parser_peek_token (parser)->location; |
5576 | location_t exp_loc; | |
6866c6e8 ILT |
5577 | ret.original_code = ERROR_MARK; |
5578 | ret.original_type = NULL; | |
27bf414c JM |
5579 | switch (c_parser_peek_token (parser)->type) |
5580 | { | |
5581 | case CPP_PLUS_PLUS: | |
5582 | c_parser_consume_token (parser); | |
c2255bc4 | 5583 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5584 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5585 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5586 | return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op); |
27bf414c JM |
5587 | case CPP_MINUS_MINUS: |
5588 | c_parser_consume_token (parser); | |
c2255bc4 | 5589 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5590 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5591 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5592 | return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op); |
27bf414c JM |
5593 | case CPP_AND: |
5594 | c_parser_consume_token (parser); | |
ebfbbdc5 JJ |
5595 | op = c_parser_cast_expression (parser, NULL); |
5596 | mark_exp_read (op.value); | |
5597 | return parser_build_unary_op (op_loc, ADDR_EXPR, op); | |
27bf414c JM |
5598 | case CPP_MULT: |
5599 | c_parser_consume_token (parser); | |
c2255bc4 | 5600 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5601 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5602 | op = default_function_array_read_conversion (exp_loc, op); |
dd865ef6 | 5603 | ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR); |
27bf414c JM |
5604 | return ret; |
5605 | case CPP_PLUS: | |
44c21c7f | 5606 | if (!c_dialect_objc () && !in_system_header) |
c2255bc4 | 5607 | warning_at (op_loc, |
3ba09659 AH |
5608 | OPT_Wtraditional, |
5609 | "traditional C rejects the unary plus operator"); | |
c7412148 | 5610 | c_parser_consume_token (parser); |
c2255bc4 | 5611 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5612 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5613 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5614 | return parser_build_unary_op (op_loc, CONVERT_EXPR, op); |
27bf414c JM |
5615 | case CPP_MINUS: |
5616 | c_parser_consume_token (parser); | |
c2255bc4 | 5617 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5618 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5619 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5620 | return parser_build_unary_op (op_loc, NEGATE_EXPR, op); |
27bf414c JM |
5621 | case CPP_COMPL: |
5622 | c_parser_consume_token (parser); | |
c2255bc4 | 5623 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5624 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5625 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5626 | return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op); |
27bf414c JM |
5627 | case CPP_NOT: |
5628 | c_parser_consume_token (parser); | |
c2255bc4 | 5629 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5630 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5631 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5632 | return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op); |
27bf414c JM |
5633 | case CPP_AND_AND: |
5634 | /* Refer to the address of a label as a pointer. */ | |
5635 | c_parser_consume_token (parser); | |
5636 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5637 | { | |
5638 | ret.value = finish_label_address_expr | |
c2255bc4 | 5639 | (c_parser_peek_token (parser)->value, op_loc); |
27bf414c | 5640 | c_parser_consume_token (parser); |
27bf414c JM |
5641 | } |
5642 | else | |
5643 | { | |
5644 | c_parser_error (parser, "expected identifier"); | |
5645 | ret.value = error_mark_node; | |
27bf414c | 5646 | } |
43f6dfd3 | 5647 | return ret; |
27bf414c JM |
5648 | case CPP_KEYWORD: |
5649 | switch (c_parser_peek_token (parser)->keyword) | |
5650 | { | |
5651 | case RID_SIZEOF: | |
5652 | return c_parser_sizeof_expression (parser); | |
5653 | case RID_ALIGNOF: | |
5654 | return c_parser_alignof_expression (parser); | |
5655 | case RID_EXTENSION: | |
5656 | c_parser_consume_token (parser); | |
5657 | ext = disable_extension_diagnostics (); | |
5658 | ret = c_parser_cast_expression (parser, NULL); | |
5659 | restore_extension_diagnostics (ext); | |
5660 | return ret; | |
5661 | case RID_REALPART: | |
5662 | c_parser_consume_token (parser); | |
c2255bc4 | 5663 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5664 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
5665 | op = default_function_array_conversion (exp_loc, op); |
5666 | return parser_build_unary_op (op_loc, REALPART_EXPR, op); | |
27bf414c JM |
5667 | case RID_IMAGPART: |
5668 | c_parser_consume_token (parser); | |
c2255bc4 | 5669 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5670 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
5671 | op = default_function_array_conversion (exp_loc, op); |
5672 | return parser_build_unary_op (op_loc, IMAGPART_EXPR, op); | |
27bf414c JM |
5673 | default: |
5674 | return c_parser_postfix_expression (parser); | |
5675 | } | |
5676 | default: | |
5677 | return c_parser_postfix_expression (parser); | |
5678 | } | |
5679 | } | |
5680 | ||
5681 | /* Parse a sizeof expression. */ | |
5682 | ||
5683 | static struct c_expr | |
5684 | c_parser_sizeof_expression (c_parser *parser) | |
5685 | { | |
5686 | struct c_expr expr; | |
c7412148 | 5687 | location_t expr_loc; |
27bf414c JM |
5688 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF)); |
5689 | c_parser_consume_token (parser); | |
7d882b83 | 5690 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
5691 | in_sizeof++; |
5692 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
5693 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5694 | { | |
5695 | /* Either sizeof ( type-name ) or sizeof unary-expression | |
5696 | starting with a compound literal. */ | |
5697 | struct c_type_name *type_name; | |
5698 | c_parser_consume_token (parser); | |
c7412148 | 5699 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5700 | type_name = c_parser_type_name (parser); |
5701 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5702 | if (type_name == NULL) | |
5703 | { | |
5704 | struct c_expr ret; | |
7d882b83 | 5705 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
5706 | in_sizeof--; |
5707 | ret.value = error_mark_node; | |
5708 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5709 | ret.original_type = NULL; |
27bf414c JM |
5710 | return ret; |
5711 | } | |
5712 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5713 | { | |
5714 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
5715 | type_name, |
5716 | expr_loc); | |
27bf414c JM |
5717 | goto sizeof_expr; |
5718 | } | |
5719 | /* sizeof ( type-name ). */ | |
7d882b83 | 5720 | c_inhibit_evaluation_warnings--; |
27bf414c | 5721 | in_sizeof--; |
c2255bc4 | 5722 | return c_expr_sizeof_type (expr_loc, type_name); |
27bf414c JM |
5723 | } |
5724 | else | |
5725 | { | |
c7412148 | 5726 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5727 | expr = c_parser_unary_expression (parser); |
5728 | sizeof_expr: | |
7d882b83 | 5729 | c_inhibit_evaluation_warnings--; |
27bf414c | 5730 | in_sizeof--; |
ebfbbdc5 | 5731 | mark_exp_read (expr.value); |
27bf414c JM |
5732 | if (TREE_CODE (expr.value) == COMPONENT_REF |
5733 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 5734 | error_at (expr_loc, "%<sizeof%> applied to a bit-field"); |
c2255bc4 | 5735 | return c_expr_sizeof_expr (expr_loc, expr); |
27bf414c JM |
5736 | } |
5737 | } | |
5738 | ||
5739 | /* Parse an alignof expression. */ | |
5740 | ||
5741 | static struct c_expr | |
5742 | c_parser_alignof_expression (c_parser *parser) | |
5743 | { | |
5744 | struct c_expr expr; | |
c2255bc4 | 5745 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5746 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF)); |
5747 | c_parser_consume_token (parser); | |
7d882b83 | 5748 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
5749 | in_alignof++; |
5750 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
5751 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5752 | { | |
5753 | /* Either __alignof__ ( type-name ) or __alignof__ | |
5754 | unary-expression starting with a compound literal. */ | |
24b97832 | 5755 | location_t loc; |
27bf414c JM |
5756 | struct c_type_name *type_name; |
5757 | struct c_expr ret; | |
5758 | c_parser_consume_token (parser); | |
24b97832 | 5759 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5760 | type_name = c_parser_type_name (parser); |
5761 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5762 | if (type_name == NULL) | |
5763 | { | |
5764 | struct c_expr ret; | |
7d882b83 | 5765 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
5766 | in_alignof--; |
5767 | ret.value = error_mark_node; | |
5768 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5769 | ret.original_type = NULL; |
27bf414c JM |
5770 | return ret; |
5771 | } | |
5772 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5773 | { | |
5774 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
5775 | type_name, |
5776 | loc); | |
27bf414c JM |
5777 | goto alignof_expr; |
5778 | } | |
5779 | /* alignof ( type-name ). */ | |
7d882b83 | 5780 | c_inhibit_evaluation_warnings--; |
27bf414c | 5781 | in_alignof--; |
c2255bc4 | 5782 | ret.value = c_alignof (loc, groktypename (type_name, NULL, NULL)); |
27bf414c | 5783 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5784 | ret.original_type = NULL; |
27bf414c JM |
5785 | return ret; |
5786 | } | |
5787 | else | |
5788 | { | |
5789 | struct c_expr ret; | |
5790 | expr = c_parser_unary_expression (parser); | |
5791 | alignof_expr: | |
ebfbbdc5 | 5792 | mark_exp_read (expr.value); |
7d882b83 | 5793 | c_inhibit_evaluation_warnings--; |
27bf414c | 5794 | in_alignof--; |
c2255bc4 | 5795 | ret.value = c_alignof_expr (loc, expr.value); |
27bf414c | 5796 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5797 | ret.original_type = NULL; |
27bf414c JM |
5798 | return ret; |
5799 | } | |
5800 | } | |
5801 | ||
5802 | /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2). | |
5803 | ||
5804 | postfix-expression: | |
5805 | primary-expression | |
5806 | postfix-expression [ expression ] | |
5807 | postfix-expression ( argument-expression-list[opt] ) | |
5808 | postfix-expression . identifier | |
5809 | postfix-expression -> identifier | |
5810 | postfix-expression ++ | |
5811 | postfix-expression -- | |
5812 | ( type-name ) { initializer-list } | |
5813 | ( type-name ) { initializer-list , } | |
5814 | ||
5815 | argument-expression-list: | |
5816 | argument-expression | |
5817 | argument-expression-list , argument-expression | |
5818 | ||
5819 | primary-expression: | |
5820 | identifier | |
5821 | constant | |
5822 | string-literal | |
5823 | ( expression ) | |
5824 | ||
5825 | GNU extensions: | |
5826 | ||
5827 | primary-expression: | |
5828 | __func__ | |
5829 | (treated as a keyword in GNU C) | |
5830 | __FUNCTION__ | |
5831 | __PRETTY_FUNCTION__ | |
5832 | ( compound-statement ) | |
5833 | __builtin_va_arg ( assignment-expression , type-name ) | |
5834 | __builtin_offsetof ( type-name , offsetof-member-designator ) | |
5835 | __builtin_choose_expr ( assignment-expression , | |
5836 | assignment-expression , | |
5837 | assignment-expression ) | |
5838 | __builtin_types_compatible_p ( type-name , type-name ) | |
5839 | ||
5840 | offsetof-member-designator: | |
5841 | identifier | |
5842 | offsetof-member-designator . identifier | |
5843 | offsetof-member-designator [ expression ] | |
5844 | ||
5845 | Objective-C: | |
5846 | ||
5847 | primary-expression: | |
5848 | [ objc-receiver objc-message-args ] | |
5849 | @selector ( objc-selector-arg ) | |
5850 | @protocol ( identifier ) | |
5851 | @encode ( type-name ) | |
5852 | objc-string-literal | |
bede2adc | 5853 | Classname . identifier |
27bf414c JM |
5854 | */ |
5855 | ||
5856 | static struct c_expr | |
5857 | c_parser_postfix_expression (c_parser *parser) | |
5858 | { | |
5859 | struct c_expr expr, e1, e2, e3; | |
5860 | struct c_type_name *t1, *t2; | |
c2255bc4 | 5861 | location_t loc = c_parser_peek_token (parser)->location;; |
6866c6e8 ILT |
5862 | expr.original_code = ERROR_MARK; |
5863 | expr.original_type = NULL; | |
27bf414c JM |
5864 | switch (c_parser_peek_token (parser)->type) |
5865 | { | |
5866 | case CPP_NUMBER: | |
754ccf7c | 5867 | expr.value = c_parser_peek_token (parser)->value; |
754ccf7c JJ |
5868 | loc = c_parser_peek_token (parser)->location; |
5869 | c_parser_consume_token (parser); | |
5870 | if (TREE_CODE (expr.value) == FIXED_CST | |
5871 | && !targetm.fixed_point_supported_p ()) | |
5872 | { | |
5873 | error_at (loc, "fixed-point types not supported for this target"); | |
5874 | expr.value = error_mark_node; | |
5875 | } | |
5876 | break; | |
27bf414c | 5877 | case CPP_CHAR: |
b6baa67d KVH |
5878 | case CPP_CHAR16: |
5879 | case CPP_CHAR32: | |
27bf414c JM |
5880 | case CPP_WCHAR: |
5881 | expr.value = c_parser_peek_token (parser)->value; | |
27bf414c JM |
5882 | c_parser_consume_token (parser); |
5883 | break; | |
5884 | case CPP_STRING: | |
b6baa67d KVH |
5885 | case CPP_STRING16: |
5886 | case CPP_STRING32: | |
27bf414c | 5887 | case CPP_WSTRING: |
2c6e3f55 | 5888 | case CPP_UTF8STRING: |
27bf414c JM |
5889 | expr.value = c_parser_peek_token (parser)->value; |
5890 | expr.original_code = STRING_CST; | |
5891 | c_parser_consume_token (parser); | |
5892 | break; | |
5893 | case CPP_OBJC_STRING: | |
5894 | gcc_assert (c_dialect_objc ()); | |
5895 | expr.value | |
5896 | = objc_build_string_object (c_parser_peek_token (parser)->value); | |
27bf414c JM |
5897 | c_parser_consume_token (parser); |
5898 | break; | |
5899 | case CPP_NAME: | |
bede2adc | 5900 | switch (c_parser_peek_token (parser)->id_kind) |
27bf414c | 5901 | { |
bede2adc NP |
5902 | case C_ID_ID: |
5903 | { | |
5904 | tree id = c_parser_peek_token (parser)->value; | |
5905 | c_parser_consume_token (parser); | |
5906 | expr.value = build_external_ref (loc, id, | |
5907 | (c_parser_peek_token (parser)->type | |
5908 | == CPP_OPEN_PAREN), | |
5909 | &expr.original_type); | |
5910 | break; | |
5911 | } | |
5912 | case C_ID_CLASSNAME: | |
5913 | { | |
5914 | /* Here we parse the Objective-C 2.0 Class.name dot | |
5915 | syntax. */ | |
5916 | tree class_name = c_parser_peek_token (parser)->value; | |
5917 | tree component; | |
5918 | c_parser_consume_token (parser); | |
5919 | gcc_assert (c_dialect_objc ()); | |
5920 | if (!c_parser_require (parser, CPP_DOT, "expected %<.%>")) | |
5921 | { | |
5922 | expr.value = error_mark_node; | |
5923 | break; | |
5924 | } | |
5925 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
5926 | { | |
5927 | c_parser_error (parser, "expected identifier"); | |
5928 | expr.value = error_mark_node; | |
5929 | break; | |
5930 | } | |
5931 | component = c_parser_peek_token (parser)->value; | |
5932 | c_parser_consume_token (parser); | |
5933 | expr.value = objc_build_class_component_ref (class_name, | |
5934 | component); | |
5935 | break; | |
5936 | } | |
5937 | default: | |
27bf414c JM |
5938 | c_parser_error (parser, "expected expression"); |
5939 | expr.value = error_mark_node; | |
27bf414c JM |
5940 | break; |
5941 | } | |
27bf414c JM |
5942 | break; |
5943 | case CPP_OPEN_PAREN: | |
5944 | /* A parenthesized expression, statement expression or compound | |
5945 | literal. */ | |
5946 | if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE) | |
5947 | { | |
5948 | /* A statement expression. */ | |
5949 | tree stmt; | |
c2255bc4 | 5950 | location_t brace_loc; |
27bf414c | 5951 | c_parser_consume_token (parser); |
c2255bc4 | 5952 | brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5953 | c_parser_consume_token (parser); |
5954 | if (cur_stmt_list == NULL) | |
5955 | { | |
c2255bc4 | 5956 | error_at (loc, "braced-group within expression allowed " |
3ba09659 | 5957 | "only inside a function"); |
27bf414c JM |
5958 | parser->error = true; |
5959 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
5960 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5961 | expr.value = error_mark_node; | |
27bf414c JM |
5962 | break; |
5963 | } | |
5964 | stmt = c_begin_stmt_expr (); | |
5965 | c_parser_compound_statement_nostart (parser); | |
5966 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
5967 | "expected %<)%>"); | |
b8698a0f | 5968 | pedwarn (loc, OPT_pedantic, |
509c9d60 | 5969 | "ISO C forbids braced-groups within expressions"); |
c2255bc4 | 5970 | expr.value = c_finish_stmt_expr (brace_loc, stmt); |
82c3c067 | 5971 | mark_exp_read (expr.value); |
27bf414c JM |
5972 | } |
5973 | else if (c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5974 | { | |
5975 | /* A compound literal. ??? Can we actually get here rather | |
5976 | than going directly to | |
5977 | c_parser_postfix_expression_after_paren_type from | |
5978 | elsewhere? */ | |
24b97832 | 5979 | location_t loc; |
27bf414c JM |
5980 | struct c_type_name *type_name; |
5981 | c_parser_consume_token (parser); | |
24b97832 | 5982 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5983 | type_name = c_parser_type_name (parser); |
5984 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
5985 | "expected %<)%>"); | |
5986 | if (type_name == NULL) | |
5987 | { | |
5988 | expr.value = error_mark_node; | |
27bf414c JM |
5989 | } |
5990 | else | |
5991 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
5992 | type_name, |
5993 | loc); | |
27bf414c JM |
5994 | } |
5995 | else | |
5996 | { | |
5997 | /* A parenthesized expression. */ | |
5998 | c_parser_consume_token (parser); | |
5999 | expr = c_parser_expression (parser); | |
6000 | if (TREE_CODE (expr.value) == MODIFY_EXPR) | |
6001 | TREE_NO_WARNING (expr.value) = 1; | |
928c19bb JM |
6002 | if (expr.original_code != C_MAYBE_CONST_EXPR) |
6003 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6004 | /* Don't change EXPR.ORIGINAL_TYPE. */ |
27bf414c JM |
6005 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
6006 | "expected %<)%>"); | |
6007 | } | |
6008 | break; | |
6009 | case CPP_KEYWORD: | |
6010 | switch (c_parser_peek_token (parser)->keyword) | |
6011 | { | |
6012 | case RID_FUNCTION_NAME: | |
6013 | case RID_PRETTY_FUNCTION_NAME: | |
6014 | case RID_C99_FUNCTION_NAME: | |
c2255bc4 | 6015 | expr.value = fname_decl (loc, |
3ba09659 | 6016 | c_parser_peek_token (parser)->keyword, |
27bf414c | 6017 | c_parser_peek_token (parser)->value); |
27bf414c JM |
6018 | c_parser_consume_token (parser); |
6019 | break; | |
6020 | case RID_VA_ARG: | |
6021 | c_parser_consume_token (parser); | |
6022 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6023 | { | |
6024 | expr.value = error_mark_node; | |
27bf414c JM |
6025 | break; |
6026 | } | |
6027 | e1 = c_parser_expr_no_commas (parser, NULL); | |
ebfbbdc5 | 6028 | mark_exp_read (e1.value); |
928c19bb | 6029 | e1.value = c_fully_fold (e1.value, false, NULL); |
27bf414c JM |
6030 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
6031 | { | |
6032 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6033 | expr.value = error_mark_node; | |
27bf414c JM |
6034 | break; |
6035 | } | |
72b5577d | 6036 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6037 | t1 = c_parser_type_name (parser); |
6038 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6039 | "expected %<)%>"); | |
6040 | if (t1 == NULL) | |
6041 | { | |
6042 | expr.value = error_mark_node; | |
27bf414c JM |
6043 | } |
6044 | else | |
6045 | { | |
928c19bb | 6046 | tree type_expr = NULL_TREE; |
c2255bc4 AH |
6047 | expr.value = c_build_va_arg (loc, e1.value, |
6048 | groktypename (t1, &type_expr, NULL)); | |
928c19bb JM |
6049 | if (type_expr) |
6050 | { | |
6051 | expr.value = build2 (C_MAYBE_CONST_EXPR, | |
6052 | TREE_TYPE (expr.value), type_expr, | |
6053 | expr.value); | |
6054 | C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true; | |
6055 | } | |
27bf414c JM |
6056 | } |
6057 | break; | |
6058 | case RID_OFFSETOF: | |
6059 | c_parser_consume_token (parser); | |
6060 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6061 | { | |
6062 | expr.value = error_mark_node; | |
27bf414c JM |
6063 | break; |
6064 | } | |
6065 | t1 = c_parser_type_name (parser); | |
6066 | if (t1 == NULL) | |
6067 | { | |
6068 | expr.value = error_mark_node; | |
27bf414c JM |
6069 | break; |
6070 | } | |
6071 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6072 | { | |
6073 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6074 | expr.value = error_mark_node; | |
27bf414c JM |
6075 | break; |
6076 | } | |
6077 | { | |
928c19bb | 6078 | tree type = groktypename (t1, NULL, NULL); |
27bf414c JM |
6079 | tree offsetof_ref; |
6080 | if (type == error_mark_node) | |
6081 | offsetof_ref = error_mark_node; | |
6082 | else | |
c2255bc4 AH |
6083 | { |
6084 | offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node); | |
6085 | SET_EXPR_LOCATION (offsetof_ref, loc); | |
6086 | } | |
27bf414c JM |
6087 | /* Parse the second argument to __builtin_offsetof. We |
6088 | must have one identifier, and beyond that we want to | |
6089 | accept sub structure and sub array references. */ | |
6090 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
6091 | { | |
6092 | offsetof_ref = build_component_ref | |
c2255bc4 | 6093 | (loc, offsetof_ref, c_parser_peek_token (parser)->value); |
27bf414c JM |
6094 | c_parser_consume_token (parser); |
6095 | while (c_parser_next_token_is (parser, CPP_DOT) | |
6096 | || c_parser_next_token_is (parser, | |
634b5df5 JJ |
6097 | CPP_OPEN_SQUARE) |
6098 | || c_parser_next_token_is (parser, | |
6099 | CPP_DEREF)) | |
27bf414c | 6100 | { |
634b5df5 JJ |
6101 | if (c_parser_next_token_is (parser, CPP_DEREF)) |
6102 | { | |
6103 | loc = c_parser_peek_token (parser)->location; | |
c2255bc4 AH |
6104 | offsetof_ref = build_array_ref (loc, |
6105 | offsetof_ref, | |
6106 | integer_zero_node); | |
634b5df5 JJ |
6107 | goto do_dot; |
6108 | } | |
6109 | else if (c_parser_next_token_is (parser, CPP_DOT)) | |
27bf414c | 6110 | { |
634b5df5 | 6111 | do_dot: |
27bf414c JM |
6112 | c_parser_consume_token (parser); |
6113 | if (c_parser_next_token_is_not (parser, | |
6114 | CPP_NAME)) | |
6115 | { | |
6116 | c_parser_error (parser, "expected identifier"); | |
6117 | break; | |
6118 | } | |
6119 | offsetof_ref = build_component_ref | |
c2255bc4 | 6120 | (loc, offsetof_ref, |
27bf414c JM |
6121 | c_parser_peek_token (parser)->value); |
6122 | c_parser_consume_token (parser); | |
6123 | } | |
6124 | else | |
6125 | { | |
6126 | tree idx; | |
6a3799eb | 6127 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6128 | c_parser_consume_token (parser); |
6129 | idx = c_parser_expression (parser).value; | |
928c19bb | 6130 | idx = c_fully_fold (idx, false, NULL); |
27bf414c JM |
6131 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, |
6132 | "expected %<]%>"); | |
c2255bc4 | 6133 | offsetof_ref = build_array_ref (loc, offsetof_ref, idx); |
27bf414c JM |
6134 | } |
6135 | } | |
6136 | } | |
6137 | else | |
6138 | c_parser_error (parser, "expected identifier"); | |
6139 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6140 | "expected %<)%>"); | |
6d4d7b0e | 6141 | expr.value = fold_offsetof (offsetof_ref, NULL_TREE); |
27bf414c JM |
6142 | } |
6143 | break; | |
6144 | case RID_CHOOSE_EXPR: | |
6145 | c_parser_consume_token (parser); | |
6146 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6147 | { | |
6148 | expr.value = error_mark_node; | |
27bf414c JM |
6149 | break; |
6150 | } | |
c7412148 | 6151 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6152 | e1 = c_parser_expr_no_commas (parser, NULL); |
6153 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6154 | { | |
6155 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6156 | expr.value = error_mark_node; | |
27bf414c JM |
6157 | break; |
6158 | } | |
6159 | e2 = c_parser_expr_no_commas (parser, NULL); | |
6160 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6161 | { | |
6162 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6163 | expr.value = error_mark_node; | |
27bf414c JM |
6164 | break; |
6165 | } | |
6166 | e3 = c_parser_expr_no_commas (parser, NULL); | |
6167 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6168 | "expected %<)%>"); | |
6169 | { | |
6170 | tree c; | |
6171 | ||
4d84fe7c | 6172 | c = e1.value; |
ebfbbdc5 JJ |
6173 | mark_exp_read (e2.value); |
6174 | mark_exp_read (e3.value); | |
928c19bb JM |
6175 | if (TREE_CODE (c) != INTEGER_CST |
6176 | || !INTEGRAL_TYPE_P (TREE_TYPE (c))) | |
3ba09659 AH |
6177 | error_at (loc, |
6178 | "first argument to %<__builtin_choose_expr%> not" | |
6179 | " a constant"); | |
928c19bb | 6180 | constant_expression_warning (c); |
27bf414c JM |
6181 | expr = integer_zerop (c) ? e3 : e2; |
6182 | } | |
6183 | break; | |
6184 | case RID_TYPES_COMPATIBLE_P: | |
6185 | c_parser_consume_token (parser); | |
6186 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6187 | { | |
6188 | expr.value = error_mark_node; | |
27bf414c JM |
6189 | break; |
6190 | } | |
6191 | t1 = c_parser_type_name (parser); | |
6192 | if (t1 == NULL) | |
6193 | { | |
6194 | expr.value = error_mark_node; | |
27bf414c JM |
6195 | break; |
6196 | } | |
6197 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6198 | { | |
6199 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6200 | expr.value = error_mark_node; | |
27bf414c JM |
6201 | break; |
6202 | } | |
6203 | t2 = c_parser_type_name (parser); | |
6204 | if (t2 == NULL) | |
6205 | { | |
6206 | expr.value = error_mark_node; | |
27bf414c JM |
6207 | break; |
6208 | } | |
6209 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6210 | "expected %<)%>"); | |
6211 | { | |
6212 | tree e1, e2; | |
6213 | ||
928c19bb JM |
6214 | e1 = TYPE_MAIN_VARIANT (groktypename (t1, NULL, NULL)); |
6215 | e2 = TYPE_MAIN_VARIANT (groktypename (t2, NULL, NULL)); | |
27bf414c | 6216 | |
9a9d280e AS |
6217 | expr.value |
6218 | = comptypes (e1, e2) ? integer_one_node : integer_zero_node; | |
27bf414c JM |
6219 | } |
6220 | break; | |
6221 | case RID_AT_SELECTOR: | |
6222 | gcc_assert (c_dialect_objc ()); | |
6223 | c_parser_consume_token (parser); | |
6224 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6225 | { | |
6226 | expr.value = error_mark_node; | |
27bf414c JM |
6227 | break; |
6228 | } | |
6229 | { | |
6230 | tree sel = c_parser_objc_selector_arg (parser); | |
6231 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6232 | "expected %<)%>"); | |
c2255bc4 | 6233 | expr.value = objc_build_selector_expr (loc, sel); |
27bf414c JM |
6234 | } |
6235 | break; | |
6236 | case RID_AT_PROTOCOL: | |
6237 | gcc_assert (c_dialect_objc ()); | |
6238 | c_parser_consume_token (parser); | |
6239 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6240 | { | |
6241 | expr.value = error_mark_node; | |
27bf414c JM |
6242 | break; |
6243 | } | |
6244 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6245 | { | |
6246 | c_parser_error (parser, "expected identifier"); | |
6247 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6248 | expr.value = error_mark_node; | |
27bf414c JM |
6249 | break; |
6250 | } | |
6251 | { | |
6252 | tree id = c_parser_peek_token (parser)->value; | |
6253 | c_parser_consume_token (parser); | |
6254 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6255 | "expected %<)%>"); | |
6256 | expr.value = objc_build_protocol_expr (id); | |
27bf414c JM |
6257 | } |
6258 | break; | |
6259 | case RID_AT_ENCODE: | |
6260 | /* Extension to support C-structures in the archiver. */ | |
6261 | gcc_assert (c_dialect_objc ()); | |
6262 | c_parser_consume_token (parser); | |
6263 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6264 | { | |
6265 | expr.value = error_mark_node; | |
27bf414c JM |
6266 | break; |
6267 | } | |
6268 | t1 = c_parser_type_name (parser); | |
6269 | if (t1 == NULL) | |
6270 | { | |
6271 | expr.value = error_mark_node; | |
27bf414c JM |
6272 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
6273 | break; | |
6274 | } | |
6275 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6276 | "expected %<)%>"); | |
6277 | { | |
928c19bb | 6278 | tree type = groktypename (t1, NULL, NULL); |
27bf414c | 6279 | expr.value = objc_build_encode_expr (type); |
27bf414c JM |
6280 | } |
6281 | break; | |
6282 | default: | |
6283 | c_parser_error (parser, "expected expression"); | |
6284 | expr.value = error_mark_node; | |
27bf414c JM |
6285 | break; |
6286 | } | |
6287 | break; | |
6288 | case CPP_OPEN_SQUARE: | |
6289 | if (c_dialect_objc ()) | |
6290 | { | |
6291 | tree receiver, args; | |
6292 | c_parser_consume_token (parser); | |
6293 | receiver = c_parser_objc_receiver (parser); | |
6294 | args = c_parser_objc_message_args (parser); | |
6295 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6296 | "expected %<]%>"); | |
6297 | expr.value = objc_build_message_expr (build_tree_list (receiver, | |
6298 | args)); | |
27bf414c JM |
6299 | break; |
6300 | } | |
6301 | /* Else fall through to report error. */ | |
6302 | default: | |
6303 | c_parser_error (parser, "expected expression"); | |
6304 | expr.value = error_mark_node; | |
27bf414c JM |
6305 | break; |
6306 | } | |
c2255bc4 | 6307 | return c_parser_postfix_expression_after_primary (parser, loc, expr); |
27bf414c JM |
6308 | } |
6309 | ||
6310 | /* Parse a postfix expression after a parenthesized type name: the | |
6311 | brace-enclosed initializer of a compound literal, possibly followed | |
6312 | by some postfix operators. This is separate because it is not | |
6313 | possible to tell until after the type name whether a cast | |
6314 | expression has a cast or a compound literal, or whether the operand | |
6315 | of sizeof is a parenthesized type name or starts with a compound | |
24b97832 ILT |
6316 | literal. TYPE_LOC is the location where TYPE_NAME starts--the |
6317 | location of the first token after the parentheses around the type | |
6318 | name. */ | |
27bf414c JM |
6319 | |
6320 | static struct c_expr | |
6321 | c_parser_postfix_expression_after_paren_type (c_parser *parser, | |
24b97832 ILT |
6322 | struct c_type_name *type_name, |
6323 | location_t type_loc) | |
27bf414c JM |
6324 | { |
6325 | tree type; | |
6326 | struct c_expr init; | |
928c19bb | 6327 | bool non_const; |
27bf414c | 6328 | struct c_expr expr; |
c7412148 | 6329 | location_t start_loc; |
928c19bb JM |
6330 | tree type_expr = NULL_TREE; |
6331 | bool type_expr_const = true; | |
c2255bc4 | 6332 | check_compound_literal_type (type_loc, type_name); |
27bf414c | 6333 | start_init (NULL_TREE, NULL, 0); |
928c19bb | 6334 | type = groktypename (type_name, &type_expr, &type_expr_const); |
c7412148 | 6335 | start_loc = c_parser_peek_token (parser)->location; |
85cad37c | 6336 | if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type)) |
27bf414c | 6337 | { |
24b97832 | 6338 | error_at (type_loc, "compound literal has variable size"); |
27bf414c JM |
6339 | type = error_mark_node; |
6340 | } | |
6341 | init = c_parser_braced_init (parser, type, false); | |
6342 | finish_init (); | |
6343 | maybe_warn_string_init (type, init); | |
6344 | ||
36c5e70a BE |
6345 | if (type != error_mark_node |
6346 | && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)) | |
6347 | && current_function_decl) | |
6348 | { | |
6349 | error ("compound literal qualified by address-space qualifier"); | |
6350 | type = error_mark_node; | |
6351 | } | |
6352 | ||
fcf73884 | 6353 | if (!flag_isoc99) |
509c9d60 | 6354 | pedwarn (start_loc, OPT_pedantic, "ISO C90 forbids compound literals"); |
928c19bb JM |
6355 | non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR) |
6356 | ? CONSTRUCTOR_NON_CONST (init.value) | |
6357 | : init.original_code == C_MAYBE_CONST_EXPR); | |
6358 | non_const |= !type_expr_const; | |
c2255bc4 | 6359 | expr.value = build_compound_literal (start_loc, type, init.value, non_const); |
27bf414c | 6360 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6361 | expr.original_type = NULL; |
928c19bb JM |
6362 | if (type_expr) |
6363 | { | |
6364 | if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR) | |
6365 | { | |
6366 | gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE); | |
6367 | C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr; | |
6368 | } | |
6369 | else | |
6370 | { | |
6371 | gcc_assert (!non_const); | |
6372 | expr.value = build2 (C_MAYBE_CONST_EXPR, type, | |
6373 | type_expr, expr.value); | |
6374 | } | |
6375 | } | |
c2255bc4 | 6376 | return c_parser_postfix_expression_after_primary (parser, start_loc, expr); |
27bf414c JM |
6377 | } |
6378 | ||
6379 | /* Parse a postfix expression after the initial primary or compound | |
c2255bc4 AH |
6380 | literal; that is, parse a series of postfix operators. |
6381 | ||
6382 | EXPR_LOC is the location of the primary expression. */ | |
27bf414c JM |
6383 | |
6384 | static struct c_expr | |
6385 | c_parser_postfix_expression_after_primary (c_parser *parser, | |
c2255bc4 | 6386 | location_t expr_loc, |
27bf414c JM |
6387 | struct c_expr expr) |
6388 | { | |
928c19bb | 6389 | struct c_expr orig_expr; |
bbbbb16a ILT |
6390 | tree ident, idx; |
6391 | VEC(tree,gc) *exprlist; | |
6392 | VEC(tree,gc) *origtypes; | |
27bf414c JM |
6393 | while (true) |
6394 | { | |
c2255bc4 | 6395 | location_t op_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6396 | switch (c_parser_peek_token (parser)->type) |
6397 | { | |
6398 | case CPP_OPEN_SQUARE: | |
6399 | /* Array reference. */ | |
6400 | c_parser_consume_token (parser); | |
6401 | idx = c_parser_expression (parser).value; | |
6402 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6403 | "expected %<]%>"); | |
c2255bc4 | 6404 | expr.value = build_array_ref (op_loc, expr.value, idx); |
27bf414c | 6405 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6406 | expr.original_type = NULL; |
27bf414c JM |
6407 | break; |
6408 | case CPP_OPEN_PAREN: | |
6409 | /* Function call. */ | |
6410 | c_parser_consume_token (parser); | |
6411 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
bbbbb16a | 6412 | exprlist = NULL; |
27bf414c | 6413 | else |
bbbbb16a | 6414 | exprlist = c_parser_expr_list (parser, true, false, &origtypes); |
27bf414c JM |
6415 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
6416 | "expected %<)%>"); | |
928c19bb | 6417 | orig_expr = expr; |
ebfbbdc5 | 6418 | mark_exp_read (expr.value); |
c2255bc4 AH |
6419 | /* FIXME diagnostics: Ideally we want the FUNCNAME, not the |
6420 | "(" after the FUNCNAME, which is what we have now. */ | |
6421 | expr.value = build_function_call_vec (op_loc, expr.value, exprlist, | |
bbbbb16a | 6422 | origtypes); |
27bf414c | 6423 | expr.original_code = ERROR_MARK; |
928c19bb JM |
6424 | if (TREE_CODE (expr.value) == INTEGER_CST |
6425 | && TREE_CODE (orig_expr.value) == FUNCTION_DECL | |
6426 | && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL | |
6427 | && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P) | |
6428 | expr.original_code = C_MAYBE_CONST_EXPR; | |
6866c6e8 | 6429 | expr.original_type = NULL; |
bbbbb16a ILT |
6430 | if (exprlist != NULL) |
6431 | { | |
c166b898 ILT |
6432 | release_tree_vector (exprlist); |
6433 | release_tree_vector (origtypes); | |
bbbbb16a | 6434 | } |
27bf414c JM |
6435 | break; |
6436 | case CPP_DOT: | |
6437 | /* Structure element reference. */ | |
6438 | c_parser_consume_token (parser); | |
c2255bc4 | 6439 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
6440 | if (c_parser_next_token_is (parser, CPP_NAME)) |
6441 | ident = c_parser_peek_token (parser)->value; | |
6442 | else | |
6443 | { | |
6444 | c_parser_error (parser, "expected identifier"); | |
6445 | expr.value = error_mark_node; | |
6446 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6447 | expr.original_type = NULL; |
27bf414c JM |
6448 | return expr; |
6449 | } | |
6450 | c_parser_consume_token (parser); | |
c2255bc4 | 6451 | expr.value = build_component_ref (op_loc, expr.value, ident); |
27bf414c | 6452 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
6453 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
6454 | expr.original_type = NULL; | |
6455 | else | |
6456 | { | |
6457 | /* Remember the original type of a bitfield. */ | |
6458 | tree field = TREE_OPERAND (expr.value, 1); | |
6459 | if (TREE_CODE (field) != FIELD_DECL) | |
6460 | expr.original_type = NULL; | |
6461 | else | |
6462 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
6463 | } | |
27bf414c JM |
6464 | break; |
6465 | case CPP_DEREF: | |
6466 | /* Structure element reference. */ | |
6467 | c_parser_consume_token (parser); | |
c2255bc4 | 6468 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
6469 | if (c_parser_next_token_is (parser, CPP_NAME)) |
6470 | ident = c_parser_peek_token (parser)->value; | |
6471 | else | |
6472 | { | |
6473 | c_parser_error (parser, "expected identifier"); | |
6474 | expr.value = error_mark_node; | |
6475 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6476 | expr.original_type = NULL; |
27bf414c JM |
6477 | return expr; |
6478 | } | |
6479 | c_parser_consume_token (parser); | |
c2255bc4 AH |
6480 | expr.value = build_component_ref (op_loc, |
6481 | build_indirect_ref (op_loc, | |
c9f9eb5d | 6482 | expr.value, |
dd865ef6 | 6483 | RO_ARROW), |
6a3799eb | 6484 | ident); |
27bf414c | 6485 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
6486 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
6487 | expr.original_type = NULL; | |
6488 | else | |
6489 | { | |
6490 | /* Remember the original type of a bitfield. */ | |
6491 | tree field = TREE_OPERAND (expr.value, 1); | |
6492 | if (TREE_CODE (field) != FIELD_DECL) | |
6493 | expr.original_type = NULL; | |
6494 | else | |
6495 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
6496 | } | |
27bf414c JM |
6497 | break; |
6498 | case CPP_PLUS_PLUS: | |
6499 | /* Postincrement. */ | |
6500 | c_parser_consume_token (parser); | |
ebfbbdc5 | 6501 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 | 6502 | expr.value = build_unary_op (op_loc, |
c9f9eb5d | 6503 | POSTINCREMENT_EXPR, expr.value, 0); |
27bf414c | 6504 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6505 | expr.original_type = NULL; |
27bf414c JM |
6506 | break; |
6507 | case CPP_MINUS_MINUS: | |
6508 | /* Postdecrement. */ | |
6509 | c_parser_consume_token (parser); | |
ebfbbdc5 | 6510 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 | 6511 | expr.value = build_unary_op (op_loc, |
c9f9eb5d | 6512 | POSTDECREMENT_EXPR, expr.value, 0); |
27bf414c | 6513 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6514 | expr.original_type = NULL; |
27bf414c JM |
6515 | break; |
6516 | default: | |
6517 | return expr; | |
6518 | } | |
6519 | } | |
6520 | } | |
6521 | ||
6522 | /* Parse an expression (C90 6.3.17, C99 6.5.17). | |
6523 | ||
6524 | expression: | |
6525 | assignment-expression | |
6526 | expression , assignment-expression | |
6527 | */ | |
6528 | ||
6529 | static struct c_expr | |
6530 | c_parser_expression (c_parser *parser) | |
6531 | { | |
6532 | struct c_expr expr; | |
6533 | expr = c_parser_expr_no_commas (parser, NULL); | |
6534 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
6535 | { | |
6536 | struct c_expr next; | |
056928b2 | 6537 | tree lhsval; |
c2255bc4 AH |
6538 | location_t loc = c_parser_peek_token (parser)->location; |
6539 | location_t expr_loc; | |
27bf414c | 6540 | c_parser_consume_token (parser); |
c2255bc4 | 6541 | expr_loc = c_parser_peek_token (parser)->location; |
056928b2 JJ |
6542 | lhsval = expr.value; |
6543 | while (TREE_CODE (lhsval) == COMPOUND_EXPR) | |
6544 | lhsval = TREE_OPERAND (lhsval, 1); | |
6545 | if (DECL_P (lhsval) || handled_component_p (lhsval)) | |
6546 | mark_exp_read (lhsval); | |
27bf414c | 6547 | next = c_parser_expr_no_commas (parser, NULL); |
c2255bc4 AH |
6548 | next = default_function_array_conversion (expr_loc, next); |
6549 | expr.value = build_compound_expr (loc, expr.value, next.value); | |
27bf414c | 6550 | expr.original_code = COMPOUND_EXPR; |
81f40b79 | 6551 | expr.original_type = next.original_type; |
27bf414c JM |
6552 | } |
6553 | return expr; | |
6554 | } | |
6555 | ||
46bdb9cf JM |
6556 | /* Parse an expression and convert functions or arrays to |
6557 | pointers. */ | |
6558 | ||
6559 | static struct c_expr | |
6560 | c_parser_expression_conv (c_parser *parser) | |
6561 | { | |
6562 | struct c_expr expr; | |
c2255bc4 | 6563 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6564 | expr = c_parser_expression (parser); |
c2255bc4 | 6565 | expr = default_function_array_conversion (loc, expr); |
46bdb9cf JM |
6566 | return expr; |
6567 | } | |
6568 | ||
6569 | /* Parse a non-empty list of expressions. If CONVERT_P, convert | |
928c19bb | 6570 | functions and arrays to pointers. If FOLD_P, fold the expressions. |
27bf414c JM |
6571 | |
6572 | nonempty-expr-list: | |
6573 | assignment-expression | |
6574 | nonempty-expr-list , assignment-expression | |
6575 | */ | |
6576 | ||
bbbbb16a ILT |
6577 | static VEC(tree,gc) * |
6578 | c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p, | |
6579 | VEC(tree,gc) **p_orig_types) | |
27bf414c | 6580 | { |
bbbbb16a ILT |
6581 | VEC(tree,gc) *ret; |
6582 | VEC(tree,gc) *orig_types; | |
27bf414c | 6583 | struct c_expr expr; |
c2255bc4 | 6584 | location_t loc = c_parser_peek_token (parser)->location; |
bbbbb16a | 6585 | |
c166b898 | 6586 | ret = make_tree_vector (); |
bbbbb16a ILT |
6587 | if (p_orig_types == NULL) |
6588 | orig_types = NULL; | |
6589 | else | |
c166b898 | 6590 | orig_types = make_tree_vector (); |
bbbbb16a | 6591 | |
27bf414c | 6592 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 6593 | if (convert_p) |
ebfbbdc5 | 6594 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
6595 | if (fold_p) |
6596 | expr.value = c_fully_fold (expr.value, false, NULL); | |
bbbbb16a ILT |
6597 | VEC_quick_push (tree, ret, expr.value); |
6598 | if (orig_types != NULL) | |
6599 | VEC_quick_push (tree, orig_types, expr.original_type); | |
27bf414c JM |
6600 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
6601 | { | |
6602 | c_parser_consume_token (parser); | |
c2255bc4 | 6603 | loc = c_parser_peek_token (parser)->location; |
27bf414c | 6604 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 6605 | if (convert_p) |
ebfbbdc5 | 6606 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
6607 | if (fold_p) |
6608 | expr.value = c_fully_fold (expr.value, false, NULL); | |
bbbbb16a ILT |
6609 | VEC_safe_push (tree, gc, ret, expr.value); |
6610 | if (orig_types != NULL) | |
6611 | VEC_safe_push (tree, gc, orig_types, expr.original_type); | |
27bf414c | 6612 | } |
bbbbb16a ILT |
6613 | if (orig_types != NULL) |
6614 | *p_orig_types = orig_types; | |
27bf414c JM |
6615 | return ret; |
6616 | } | |
27bf414c JM |
6617 | \f |
6618 | /* Parse Objective-C-specific constructs. */ | |
6619 | ||
6620 | /* Parse an objc-class-definition. | |
6621 | ||
6622 | objc-class-definition: | |
6623 | @interface identifier objc-superclass[opt] objc-protocol-refs[opt] | |
6624 | objc-class-instance-variables[opt] objc-methodprotolist @end | |
6625 | @implementation identifier objc-superclass[opt] | |
6626 | objc-class-instance-variables[opt] | |
6627 | @interface identifier ( identifier ) objc-protocol-refs[opt] | |
6628 | objc-methodprotolist @end | |
6629 | @implementation identifier ( identifier ) | |
6630 | ||
6631 | objc-superclass: | |
6632 | : identifier | |
6633 | ||
6634 | "@interface identifier (" must start "@interface identifier ( | |
6635 | identifier ) ...": objc-methodprotolist in the first production may | |
0fa2e4df | 6636 | not start with a parenthesized identifier as a declarator of a data |
27bf414c JM |
6637 | definition with no declaration specifiers if the objc-superclass, |
6638 | objc-protocol-refs and objc-class-instance-variables are omitted. */ | |
6639 | ||
6640 | static void | |
c165dca7 | 6641 | c_parser_objc_class_definition (c_parser *parser, tree attributes) |
27bf414c JM |
6642 | { |
6643 | bool iface_p; | |
6644 | tree id1; | |
6645 | tree superclass; | |
6646 | if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE)) | |
6647 | iface_p = true; | |
6648 | else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION)) | |
6649 | iface_p = false; | |
6650 | else | |
6651 | gcc_unreachable (); | |
c165dca7 | 6652 | |
27bf414c JM |
6653 | c_parser_consume_token (parser); |
6654 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6655 | { | |
6656 | c_parser_error (parser, "expected identifier"); | |
6657 | return; | |
6658 | } | |
6659 | id1 = c_parser_peek_token (parser)->value; | |
6660 | c_parser_consume_token (parser); | |
6661 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
6662 | { | |
6663 | tree id2; | |
6664 | tree proto = NULL_TREE; | |
6665 | c_parser_consume_token (parser); | |
6666 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6667 | { | |
6668 | c_parser_error (parser, "expected identifier"); | |
6669 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6670 | return; | |
6671 | } | |
6672 | id2 = c_parser_peek_token (parser)->value; | |
6673 | c_parser_consume_token (parser); | |
6674 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6675 | if (!iface_p) | |
6676 | { | |
6677 | objc_start_category_implementation (id1, id2); | |
6678 | return; | |
6679 | } | |
6680 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
6681 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 6682 | objc_start_category_interface (id1, id2, proto, attributes); |
27bf414c JM |
6683 | c_parser_objc_methodprotolist (parser); |
6684 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
6685 | objc_finish_interface (); | |
6686 | return; | |
6687 | } | |
6688 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
6689 | { | |
6690 | c_parser_consume_token (parser); | |
6691 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6692 | { | |
6693 | c_parser_error (parser, "expected identifier"); | |
6694 | return; | |
6695 | } | |
6696 | superclass = c_parser_peek_token (parser)->value; | |
6697 | c_parser_consume_token (parser); | |
6698 | } | |
6699 | else | |
6700 | superclass = NULL_TREE; | |
6701 | if (iface_p) | |
6702 | { | |
6703 | tree proto = NULL_TREE; | |
6704 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
6705 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 6706 | objc_start_class_interface (id1, superclass, proto, attributes); |
27bf414c JM |
6707 | } |
6708 | else | |
6709 | objc_start_class_implementation (id1, superclass); | |
6710 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6711 | c_parser_objc_class_instance_variables (parser); | |
6712 | if (iface_p) | |
6713 | { | |
6714 | objc_continue_interface (); | |
6715 | c_parser_objc_methodprotolist (parser); | |
6716 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
6717 | objc_finish_interface (); | |
6718 | } | |
6719 | else | |
6720 | { | |
6721 | objc_continue_implementation (); | |
6722 | return; | |
6723 | } | |
6724 | } | |
6725 | ||
6726 | /* Parse objc-class-instance-variables. | |
6727 | ||
6728 | objc-class-instance-variables: | |
6729 | { objc-instance-variable-decl-list[opt] } | |
6730 | ||
6731 | objc-instance-variable-decl-list: | |
6732 | objc-visibility-spec | |
6733 | objc-instance-variable-decl ; | |
6734 | ; | |
6735 | objc-instance-variable-decl-list objc-visibility-spec | |
6736 | objc-instance-variable-decl-list objc-instance-variable-decl ; | |
6737 | objc-instance-variable-decl-list ; | |
6738 | ||
6739 | objc-visibility-spec: | |
6740 | @private | |
6741 | @protected | |
6742 | @public | |
6743 | ||
6744 | objc-instance-variable-decl: | |
6745 | struct-declaration | |
6746 | */ | |
6747 | ||
6748 | static void | |
6749 | c_parser_objc_class_instance_variables (c_parser *parser) | |
6750 | { | |
6751 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); | |
6752 | c_parser_consume_token (parser); | |
6753 | while (c_parser_next_token_is_not (parser, CPP_EOF)) | |
6754 | { | |
6755 | tree decls; | |
6756 | /* Parse any stray semicolon. */ | |
6757 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
6758 | { | |
b8698a0f | 6759 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 6760 | "extra semicolon in struct or union specified"); |
27bf414c JM |
6761 | c_parser_consume_token (parser); |
6762 | continue; | |
6763 | } | |
6764 | /* Stop if at the end of the instance variables. */ | |
6765 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
6766 | { | |
6767 | c_parser_consume_token (parser); | |
6768 | break; | |
6769 | } | |
6770 | /* Parse any objc-visibility-spec. */ | |
49b91f05 | 6771 | if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE)) |
27bf414c JM |
6772 | { |
6773 | c_parser_consume_token (parser); | |
c37d8c30 | 6774 | objc_set_visibility (OBJC_IVAR_VIS_PRIVATE); |
27bf414c JM |
6775 | continue; |
6776 | } | |
49b91f05 | 6777 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED)) |
27bf414c JM |
6778 | { |
6779 | c_parser_consume_token (parser); | |
c37d8c30 | 6780 | objc_set_visibility (OBJC_IVAR_VIS_PROTECTED); |
27bf414c JM |
6781 | continue; |
6782 | } | |
49b91f05 | 6783 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC)) |
27bf414c JM |
6784 | { |
6785 | c_parser_consume_token (parser); | |
c37d8c30 IS |
6786 | objc_set_visibility (OBJC_IVAR_VIS_PUBLIC); |
6787 | continue; | |
6788 | } | |
6789 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE)) | |
6790 | { | |
6791 | c_parser_consume_token (parser); | |
6792 | objc_set_visibility (OBJC_IVAR_VIS_PACKAGE); | |
27bf414c JM |
6793 | continue; |
6794 | } | |
bc4071dd RH |
6795 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
6796 | { | |
6797 | c_parser_pragma (parser, pragma_external); | |
6798 | continue; | |
6799 | } | |
6800 | ||
27bf414c JM |
6801 | /* Parse some comma-separated declarations. */ |
6802 | decls = c_parser_struct_declaration (parser); | |
6803 | { | |
6804 | /* Comma-separated instance variables are chained together in | |
6805 | reverse order; add them one by one. */ | |
6806 | tree ivar = nreverse (decls); | |
910ad8de | 6807 | for (; ivar; ivar = DECL_CHAIN (ivar)) |
27bf414c JM |
6808 | objc_add_instance_variable (copy_node (ivar)); |
6809 | } | |
6810 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
6811 | } | |
6812 | } | |
6813 | ||
6814 | /* Parse an objc-class-declaration. | |
6815 | ||
6816 | objc-class-declaration: | |
6817 | @class identifier-list ; | |
6818 | */ | |
6819 | ||
6820 | static void | |
6821 | c_parser_objc_class_declaration (c_parser *parser) | |
6822 | { | |
6823 | tree list = NULL_TREE; | |
49b91f05 | 6824 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS)); |
27bf414c JM |
6825 | c_parser_consume_token (parser); |
6826 | /* Any identifiers, including those declared as type names, are OK | |
6827 | here. */ | |
6828 | while (true) | |
6829 | { | |
6830 | tree id; | |
6831 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6832 | { | |
6833 | c_parser_error (parser, "expected identifier"); | |
da57d1b9 NP |
6834 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); |
6835 | parser->error = false; | |
6836 | return; | |
27bf414c JM |
6837 | } |
6838 | id = c_parser_peek_token (parser)->value; | |
6839 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
6840 | c_parser_consume_token (parser); | |
6841 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
6842 | c_parser_consume_token (parser); | |
6843 | else | |
6844 | break; | |
6845 | } | |
6846 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
6847 | objc_declare_class (list); | |
6848 | } | |
6849 | ||
6850 | /* Parse an objc-alias-declaration. | |
6851 | ||
6852 | objc-alias-declaration: | |
6853 | @compatibility_alias identifier identifier ; | |
6854 | */ | |
6855 | ||
6856 | static void | |
6857 | c_parser_objc_alias_declaration (c_parser *parser) | |
6858 | { | |
6859 | tree id1, id2; | |
6860 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS)); | |
6861 | c_parser_consume_token (parser); | |
6862 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6863 | { | |
6864 | c_parser_error (parser, "expected identifier"); | |
6865 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
6866 | return; | |
6867 | } | |
6868 | id1 = c_parser_peek_token (parser)->value; | |
6869 | c_parser_consume_token (parser); | |
6870 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6871 | { | |
6872 | c_parser_error (parser, "expected identifier"); | |
6873 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
6874 | return; | |
6875 | } | |
6876 | id2 = c_parser_peek_token (parser)->value; | |
6877 | c_parser_consume_token (parser); | |
6878 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
6879 | objc_declare_alias (id1, id2); | |
6880 | } | |
6881 | ||
6882 | /* Parse an objc-protocol-definition. | |
6883 | ||
6884 | objc-protocol-definition: | |
6885 | @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end | |
6886 | @protocol identifier-list ; | |
6887 | ||
6888 | "@protocol identifier ;" should be resolved as "@protocol | |
6889 | identifier-list ;": objc-methodprotolist may not start with a | |
6890 | semicolon in the first alternative if objc-protocol-refs are | |
6891 | omitted. */ | |
6892 | ||
6893 | static void | |
c165dca7 | 6894 | c_parser_objc_protocol_definition (c_parser *parser, tree attributes) |
27bf414c JM |
6895 | { |
6896 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL)); | |
c165dca7 | 6897 | |
27bf414c JM |
6898 | c_parser_consume_token (parser); |
6899 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6900 | { | |
6901 | c_parser_error (parser, "expected identifier"); | |
6902 | return; | |
6903 | } | |
6904 | if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
6905 | || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON) | |
6906 | { | |
6907 | tree list = NULL_TREE; | |
6908 | /* Any identifiers, including those declared as type names, are | |
6909 | OK here. */ | |
6910 | while (true) | |
6911 | { | |
6912 | tree id; | |
6913 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6914 | { | |
6915 | c_parser_error (parser, "expected identifier"); | |
6916 | break; | |
6917 | } | |
6918 | id = c_parser_peek_token (parser)->value; | |
6919 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
6920 | c_parser_consume_token (parser); | |
6921 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
6922 | c_parser_consume_token (parser); | |
6923 | else | |
6924 | break; | |
6925 | } | |
6926 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
6927 | objc_declare_protocols (list); | |
6928 | } | |
6929 | else | |
6930 | { | |
6931 | tree id = c_parser_peek_token (parser)->value; | |
6932 | tree proto = NULL_TREE; | |
6933 | c_parser_consume_token (parser); | |
6934 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
6935 | proto = c_parser_objc_protocol_refs (parser); | |
0bacb8c7 | 6936 | parser->objc_pq_context = true; |
c165dca7 | 6937 | objc_start_protocol (id, proto, attributes); |
27bf414c JM |
6938 | c_parser_objc_methodprotolist (parser); |
6939 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
0bacb8c7 | 6940 | parser->objc_pq_context = false; |
27bf414c JM |
6941 | objc_finish_interface (); |
6942 | } | |
6943 | } | |
6944 | ||
6945 | /* Parse an objc-method-type. | |
6946 | ||
6947 | objc-method-type: | |
6948 | + | |
6949 | - | |
27bf414c | 6950 | |
249a82c4 NP |
6951 | Return true if it is a class method (+) and false if it is |
6952 | an instance method (-). | |
6953 | */ | |
6954 | static inline bool | |
27bf414c JM |
6955 | c_parser_objc_method_type (c_parser *parser) |
6956 | { | |
6957 | switch (c_parser_peek_token (parser)->type) | |
6958 | { | |
6959 | case CPP_PLUS: | |
6960 | c_parser_consume_token (parser); | |
249a82c4 | 6961 | return true; |
27bf414c JM |
6962 | case CPP_MINUS: |
6963 | c_parser_consume_token (parser); | |
249a82c4 | 6964 | return false; |
27bf414c JM |
6965 | default: |
6966 | gcc_unreachable (); | |
6967 | } | |
6968 | } | |
6969 | ||
6970 | /* Parse an objc-method-definition. | |
6971 | ||
6972 | objc-method-definition: | |
6973 | objc-method-type objc-method-decl ;[opt] compound-statement | |
6974 | */ | |
6975 | ||
6976 | static void | |
6977 | c_parser_objc_method_definition (c_parser *parser) | |
6978 | { | |
249a82c4 | 6979 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 6980 | tree decl, attributes = NULL_TREE; |
0bacb8c7 | 6981 | parser->objc_pq_context = true; |
249a82c4 | 6982 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes); |
f7e71da5 IS |
6983 | if (decl == error_mark_node) |
6984 | return; /* Bail here. */ | |
6985 | ||
27bf414c JM |
6986 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
6987 | { | |
6988 | c_parser_consume_token (parser); | |
b8698a0f | 6989 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 6990 | "extra semicolon in method definition specified"); |
27bf414c | 6991 | } |
f7e71da5 | 6992 | |
8f078c08 AP |
6993 | if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
6994 | { | |
6995 | c_parser_error (parser, "expected %<{%>"); | |
6996 | return; | |
6997 | } | |
f7e71da5 | 6998 | |
0bacb8c7 | 6999 | parser->objc_pq_context = false; |
249a82c4 | 7000 | if (objc_start_method_definition (is_class_method, decl, attributes)) |
45547c7f NP |
7001 | { |
7002 | add_stmt (c_parser_compound_statement (parser)); | |
7003 | objc_finish_method_definition (current_function_decl); | |
7004 | } | |
7005 | else | |
7006 | { | |
7007 | /* This code is executed when we find a method definition | |
a26d8862 NP |
7008 | outside of an @implementation context (or invalid for other |
7009 | reasons). Parse the method (to keep going) but do not emit | |
7010 | any code. | |
45547c7f NP |
7011 | */ |
7012 | c_parser_compound_statement (parser); | |
7013 | } | |
27bf414c JM |
7014 | } |
7015 | ||
7016 | /* Parse an objc-methodprotolist. | |
7017 | ||
7018 | objc-methodprotolist: | |
7019 | empty | |
7020 | objc-methodprotolist objc-methodproto | |
7021 | objc-methodprotolist declaration | |
7022 | objc-methodprotolist ; | |
92902b1b IS |
7023 | @optional |
7024 | @required | |
27bf414c JM |
7025 | |
7026 | The declaration is a data definition, which may be missing | |
7027 | declaration specifiers under the same rules and diagnostics as | |
7028 | other data definitions outside functions, and the stray semicolon | |
7029 | is diagnosed the same way as a stray semicolon outside a | |
7030 | function. */ | |
7031 | ||
7032 | static void | |
7033 | c_parser_objc_methodprotolist (c_parser *parser) | |
7034 | { | |
7035 | while (true) | |
7036 | { | |
7037 | /* The list is terminated by @end. */ | |
7038 | switch (c_parser_peek_token (parser)->type) | |
7039 | { | |
7040 | case CPP_SEMICOLON: | |
b8698a0f | 7041 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 7042 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
7043 | c_parser_consume_token (parser); |
7044 | break; | |
7045 | case CPP_PLUS: | |
7046 | case CPP_MINUS: | |
7047 | c_parser_objc_methodproto (parser); | |
7048 | break; | |
b9b58168 RH |
7049 | case CPP_PRAGMA: |
7050 | c_parser_pragma (parser, pragma_external); | |
7051 | break; | |
27bf414c JM |
7052 | case CPP_EOF: |
7053 | return; | |
7054 | default: | |
7055 | if (c_parser_next_token_is_keyword (parser, RID_AT_END)) | |
7056 | return; | |
668ea4b1 | 7057 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)) |
f614132b | 7058 | c_parser_objc_at_property_declaration (parser); |
92902b1b IS |
7059 | else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL)) |
7060 | { | |
7061 | objc_set_method_opt (true); | |
7062 | c_parser_consume_token (parser); | |
7063 | } | |
7064 | else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED)) | |
7065 | { | |
7066 | objc_set_method_opt (false); | |
7067 | c_parser_consume_token (parser); | |
7068 | } | |
7069 | else | |
7070 | c_parser_declaration_or_fndef (parser, false, false, true, | |
f05b9d93 | 7071 | false, true, NULL); |
27bf414c JM |
7072 | break; |
7073 | } | |
7074 | } | |
7075 | } | |
7076 | ||
7077 | /* Parse an objc-methodproto. | |
7078 | ||
7079 | objc-methodproto: | |
7080 | objc-method-type objc-method-decl ; | |
7081 | */ | |
7082 | ||
7083 | static void | |
7084 | c_parser_objc_methodproto (c_parser *parser) | |
7085 | { | |
249a82c4 | 7086 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 7087 | tree decl, attributes = NULL_TREE; |
249a82c4 | 7088 | |
27bf414c | 7089 | /* Remember protocol qualifiers in prototypes. */ |
0bacb8c7 | 7090 | parser->objc_pq_context = true; |
249a82c4 | 7091 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes); |
f7e71da5 | 7092 | /* Forget protocol qualifiers now. */ |
0bacb8c7 | 7093 | parser->objc_pq_context = false; |
f7e71da5 IS |
7094 | |
7095 | /* Do not allow the presence of attributes to hide an erroneous | |
7096 | method implementation in the interface section. */ | |
7097 | if (!c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
7098 | { | |
7099 | c_parser_error (parser, "expected %<;%>"); | |
7100 | return; | |
7101 | } | |
7102 | ||
7103 | if (decl != error_mark_node) | |
249a82c4 | 7104 | objc_add_method_declaration (is_class_method, decl, attributes); |
f7e71da5 | 7105 | |
27bf414c JM |
7106 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
7107 | } | |
7108 | ||
f7e71da5 IS |
7109 | /* If we are at a position that method attributes may be present, check that |
7110 | there are not any parsed already (a syntax error) and then collect any | |
7111 | specified at the current location. Finally, if new attributes were present, | |
7112 | check that the next token is legal ( ';' for decls and '{' for defs). */ | |
7113 | ||
7114 | static bool | |
7115 | c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes) | |
7116 | { | |
7117 | bool bad = false; | |
7118 | if (*attributes) | |
7119 | { | |
7120 | c_parser_error (parser, | |
7121 | "method attributes must be specified at the end only"); | |
7122 | *attributes = NULL_TREE; | |
7123 | bad = true; | |
7124 | } | |
7125 | ||
7126 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7127 | *attributes = c_parser_attributes (parser); | |
7128 | ||
7129 | /* If there were no attributes here, just report any earlier error. */ | |
7130 | if (*attributes == NULL_TREE || bad) | |
7131 | return bad; | |
7132 | ||
7133 | /* If the attributes are followed by a ; or {, then just report any earlier | |
7134 | error. */ | |
7135 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
7136 | || c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
7137 | return bad; | |
7138 | ||
7139 | /* We've got attributes, but not at the end. */ | |
7140 | c_parser_error (parser, | |
7141 | "expected %<;%> or %<{%> after method attribute definition"); | |
7142 | return true; | |
7143 | } | |
7144 | ||
27bf414c JM |
7145 | /* Parse an objc-method-decl. |
7146 | ||
7147 | objc-method-decl: | |
7148 | ( objc-type-name ) objc-selector | |
7149 | objc-selector | |
7150 | ( objc-type-name ) objc-keyword-selector objc-optparmlist | |
7151 | objc-keyword-selector objc-optparmlist | |
f7e71da5 | 7152 | attributes |
27bf414c JM |
7153 | |
7154 | objc-keyword-selector: | |
7155 | objc-keyword-decl | |
7156 | objc-keyword-selector objc-keyword-decl | |
7157 | ||
7158 | objc-keyword-decl: | |
7159 | objc-selector : ( objc-type-name ) identifier | |
7160 | objc-selector : identifier | |
7161 | : ( objc-type-name ) identifier | |
7162 | : identifier | |
7163 | ||
7164 | objc-optparmlist: | |
7165 | objc-optparms objc-optellipsis | |
7166 | ||
7167 | objc-optparms: | |
7168 | empty | |
7169 | objc-opt-parms , parameter-declaration | |
7170 | ||
7171 | objc-optellipsis: | |
7172 | empty | |
7173 | , ... | |
7174 | */ | |
7175 | ||
7176 | static tree | |
249a82c4 | 7177 | c_parser_objc_method_decl (c_parser *parser, bool is_class_method, tree *attributes) |
27bf414c JM |
7178 | { |
7179 | tree type = NULL_TREE; | |
7180 | tree sel; | |
7181 | tree parms = NULL_TREE; | |
dbb74365 | 7182 | bool ellipsis = false; |
f7e71da5 | 7183 | bool attr_err = false; |
dbb74365 | 7184 | |
f7e71da5 | 7185 | *attributes = NULL_TREE; |
27bf414c JM |
7186 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
7187 | { | |
7188 | c_parser_consume_token (parser); | |
7189 | type = c_parser_objc_type_name (parser); | |
7190 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7191 | } | |
7192 | sel = c_parser_objc_selector (parser); | |
7193 | /* If there is no selector, or a colon follows, we have an | |
7194 | objc-keyword-selector. If there is a selector, and a colon does | |
7195 | not follow, that selector ends the objc-method-decl. */ | |
7196 | if (!sel || c_parser_next_token_is (parser, CPP_COLON)) | |
7197 | { | |
7198 | tree tsel = sel; | |
7199 | tree list = NULL_TREE; | |
27bf414c JM |
7200 | while (true) |
7201 | { | |
7202 | tree atype = NULL_TREE, id, keyworddecl; | |
f7e71da5 | 7203 | tree param_attr = NULL_TREE; |
27bf414c JM |
7204 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
7205 | break; | |
7206 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
7207 | { | |
7208 | c_parser_consume_token (parser); | |
7209 | atype = c_parser_objc_type_name (parser); | |
7210 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7211 | "expected %<)%>"); | |
7212 | } | |
f7e71da5 IS |
7213 | /* New ObjC allows attributes on method parameters. */ |
7214 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7215 | param_attr = c_parser_attributes (parser); | |
27bf414c JM |
7216 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
7217 | { | |
7218 | c_parser_error (parser, "expected identifier"); | |
7219 | return error_mark_node; | |
7220 | } | |
7221 | id = c_parser_peek_token (parser)->value; | |
7222 | c_parser_consume_token (parser); | |
f7e71da5 | 7223 | keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr); |
27bf414c JM |
7224 | list = chainon (list, keyworddecl); |
7225 | tsel = c_parser_objc_selector (parser); | |
7226 | if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7227 | break; | |
7228 | } | |
f7e71da5 IS |
7229 | |
7230 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7231 | ||
27bf414c JM |
7232 | /* Parse the optional parameter list. Optional Objective-C |
7233 | method parameters follow the C syntax, and may include '...' | |
7234 | to denote a variable number of arguments. */ | |
7235 | parms = make_node (TREE_LIST); | |
27bf414c JM |
7236 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7237 | { | |
7238 | struct c_parm *parm; | |
7239 | c_parser_consume_token (parser); | |
7240 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
7241 | { | |
7242 | ellipsis = true; | |
7243 | c_parser_consume_token (parser); | |
f7e71da5 IS |
7244 | attr_err |= c_parser_objc_maybe_method_attributes |
7245 | (parser, attributes) ; | |
27bf414c JM |
7246 | break; |
7247 | } | |
7248 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
7249 | if (parm == NULL) | |
7250 | break; | |
7251 | parms = chainon (parms, | |
7252 | build_tree_list (NULL_TREE, grokparm (parm))); | |
7253 | } | |
27bf414c JM |
7254 | sel = list; |
7255 | } | |
f7e71da5 IS |
7256 | else |
7257 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7258 | ||
7259 | if (sel == NULL) | |
7260 | { | |
7261 | c_parser_error (parser, "objective-c method declaration is expected"); | |
7262 | return error_mark_node; | |
7263 | } | |
7264 | ||
7265 | if (attr_err) | |
7266 | return error_mark_node; | |
7267 | ||
249a82c4 | 7268 | return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis); |
27bf414c JM |
7269 | } |
7270 | ||
7271 | /* Parse an objc-type-name. | |
7272 | ||
7273 | objc-type-name: | |
7274 | objc-type-qualifiers[opt] type-name | |
7275 | objc-type-qualifiers[opt] | |
7276 | ||
7277 | objc-type-qualifiers: | |
7278 | objc-type-qualifier | |
7279 | objc-type-qualifiers objc-type-qualifier | |
7280 | ||
7281 | objc-type-qualifier: one of | |
7282 | in out inout bycopy byref oneway | |
7283 | */ | |
7284 | ||
7285 | static tree | |
7286 | c_parser_objc_type_name (c_parser *parser) | |
7287 | { | |
7288 | tree quals = NULL_TREE; | |
d75d71e0 | 7289 | struct c_type_name *type_name = NULL; |
27bf414c JM |
7290 | tree type = NULL_TREE; |
7291 | while (true) | |
7292 | { | |
7293 | c_token *token = c_parser_peek_token (parser); | |
7294 | if (token->type == CPP_KEYWORD | |
7295 | && (token->keyword == RID_IN | |
7296 | || token->keyword == RID_OUT | |
7297 | || token->keyword == RID_INOUT | |
7298 | || token->keyword == RID_BYCOPY | |
7299 | || token->keyword == RID_BYREF | |
7300 | || token->keyword == RID_ONEWAY)) | |
7301 | { | |
71fc71d8 | 7302 | quals = chainon (build_tree_list (NULL_TREE, token->value), quals); |
27bf414c JM |
7303 | c_parser_consume_token (parser); |
7304 | } | |
7305 | else | |
7306 | break; | |
7307 | } | |
7308 | if (c_parser_next_token_starts_typename (parser)) | |
d75d71e0 ILT |
7309 | type_name = c_parser_type_name (parser); |
7310 | if (type_name) | |
928c19bb | 7311 | type = groktypename (type_name, NULL, NULL); |
27bf414c JM |
7312 | return build_tree_list (quals, type); |
7313 | } | |
7314 | ||
7315 | /* Parse objc-protocol-refs. | |
7316 | ||
7317 | objc-protocol-refs: | |
7318 | < identifier-list > | |
7319 | */ | |
7320 | ||
7321 | static tree | |
7322 | c_parser_objc_protocol_refs (c_parser *parser) | |
7323 | { | |
7324 | tree list = NULL_TREE; | |
7325 | gcc_assert (c_parser_next_token_is (parser, CPP_LESS)); | |
7326 | c_parser_consume_token (parser); | |
7327 | /* Any identifiers, including those declared as type names, are OK | |
7328 | here. */ | |
7329 | while (true) | |
7330 | { | |
7331 | tree id; | |
7332 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7333 | { | |
7334 | c_parser_error (parser, "expected identifier"); | |
7335 | break; | |
7336 | } | |
7337 | id = c_parser_peek_token (parser)->value; | |
7338 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
7339 | c_parser_consume_token (parser); | |
7340 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7341 | c_parser_consume_token (parser); | |
7342 | else | |
7343 | break; | |
7344 | } | |
7345 | c_parser_require (parser, CPP_GREATER, "expected %<>%>"); | |
7346 | return list; | |
7347 | } | |
7348 | ||
7349 | /* Parse an objc-try-catch-statement. | |
7350 | ||
7351 | objc-try-catch-statement: | |
7352 | @try compound-statement objc-catch-list[opt] | |
7353 | @try compound-statement objc-catch-list[opt] @finally compound-statement | |
7354 | ||
7355 | objc-catch-list: | |
7356 | @catch ( parameter-declaration ) compound-statement | |
7357 | objc-catch-list @catch ( parameter-declaration ) compound-statement | |
7358 | */ | |
7359 | ||
7360 | static void | |
7361 | c_parser_objc_try_catch_statement (c_parser *parser) | |
7362 | { | |
7363 | location_t loc; | |
7364 | tree stmt; | |
49b91f05 | 7365 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY)); |
27bf414c JM |
7366 | c_parser_consume_token (parser); |
7367 | loc = c_parser_peek_token (parser)->location; | |
7368 | stmt = c_parser_compound_statement (parser); | |
7369 | objc_begin_try_stmt (loc, stmt); | |
49b91f05 | 7370 | while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH)) |
27bf414c JM |
7371 | { |
7372 | struct c_parm *parm; | |
7373 | c_parser_consume_token (parser); | |
7374 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7375 | break; | |
7376 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
7377 | if (parm == NULL) | |
7378 | { | |
7379 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7380 | break; | |
7381 | } | |
7382 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7383 | objc_begin_catch_clause (grokparm (parm)); | |
7384 | if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) | |
7385 | c_parser_compound_statement_nostart (parser); | |
7386 | objc_finish_catch_clause (); | |
7387 | } | |
7388 | if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY)) | |
7389 | { | |
7390 | location_t finloc; | |
7391 | tree finstmt; | |
7392 | c_parser_consume_token (parser); | |
7393 | finloc = c_parser_peek_token (parser)->location; | |
7394 | finstmt = c_parser_compound_statement (parser); | |
7395 | objc_build_finally_clause (finloc, finstmt); | |
7396 | } | |
7397 | objc_finish_try_stmt (); | |
7398 | } | |
7399 | ||
7400 | /* Parse an objc-synchronized-statement. | |
7401 | ||
7402 | objc-synchronized-statement: | |
7403 | @synchronized ( expression ) compound-statement | |
7404 | */ | |
7405 | ||
7406 | static void | |
7407 | c_parser_objc_synchronized_statement (c_parser *parser) | |
7408 | { | |
7409 | location_t loc; | |
7410 | tree expr, stmt; | |
7411 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED)); | |
7412 | c_parser_consume_token (parser); | |
7413 | loc = c_parser_peek_token (parser)->location; | |
7414 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7415 | { | |
7416 | expr = c_parser_expression (parser).value; | |
928c19bb | 7417 | expr = c_fully_fold (expr, false, NULL); |
27bf414c JM |
7418 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
7419 | } | |
7420 | else | |
7421 | expr = error_mark_node; | |
7422 | stmt = c_parser_compound_statement (parser); | |
7423 | objc_build_synchronized (loc, expr, stmt); | |
7424 | } | |
7425 | ||
7426 | /* Parse an objc-selector; return NULL_TREE without an error if the | |
7427 | next token is not an objc-selector. | |
7428 | ||
7429 | objc-selector: | |
7430 | identifier | |
7431 | one of | |
7432 | enum struct union if else while do for switch case default | |
7433 | break continue return goto asm sizeof typeof __alignof | |
7434 | unsigned long const short volatile signed restrict _Complex | |
7435 | in out inout bycopy byref oneway int char float double void _Bool | |
7436 | ||
7437 | ??? Why this selection of keywords but not, for example, storage | |
7438 | class specifiers? */ | |
7439 | ||
7440 | static tree | |
7441 | c_parser_objc_selector (c_parser *parser) | |
7442 | { | |
7443 | c_token *token = c_parser_peek_token (parser); | |
7444 | tree value = token->value; | |
7445 | if (token->type == CPP_NAME) | |
7446 | { | |
7447 | c_parser_consume_token (parser); | |
7448 | return value; | |
7449 | } | |
7450 | if (token->type != CPP_KEYWORD) | |
7451 | return NULL_TREE; | |
7452 | switch (token->keyword) | |
7453 | { | |
7454 | case RID_ENUM: | |
7455 | case RID_STRUCT: | |
7456 | case RID_UNION: | |
7457 | case RID_IF: | |
7458 | case RID_ELSE: | |
7459 | case RID_WHILE: | |
7460 | case RID_DO: | |
7461 | case RID_FOR: | |
7462 | case RID_SWITCH: | |
7463 | case RID_CASE: | |
7464 | case RID_DEFAULT: | |
7465 | case RID_BREAK: | |
7466 | case RID_CONTINUE: | |
7467 | case RID_RETURN: | |
7468 | case RID_GOTO: | |
7469 | case RID_ASM: | |
7470 | case RID_SIZEOF: | |
7471 | case RID_TYPEOF: | |
7472 | case RID_ALIGNOF: | |
7473 | case RID_UNSIGNED: | |
7474 | case RID_LONG: | |
a6766312 | 7475 | case RID_INT128: |
27bf414c JM |
7476 | case RID_CONST: |
7477 | case RID_SHORT: | |
7478 | case RID_VOLATILE: | |
7479 | case RID_SIGNED: | |
7480 | case RID_RESTRICT: | |
7481 | case RID_COMPLEX: | |
7482 | case RID_IN: | |
7483 | case RID_OUT: | |
7484 | case RID_INOUT: | |
7485 | case RID_BYCOPY: | |
7486 | case RID_BYREF: | |
7487 | case RID_ONEWAY: | |
7488 | case RID_INT: | |
7489 | case RID_CHAR: | |
7490 | case RID_FLOAT: | |
7491 | case RID_DOUBLE: | |
7492 | case RID_VOID: | |
7493 | case RID_BOOL: | |
7494 | c_parser_consume_token (parser); | |
7495 | return value; | |
7496 | default: | |
7497 | return NULL_TREE; | |
7498 | } | |
7499 | } | |
7500 | ||
7501 | /* Parse an objc-selector-arg. | |
7502 | ||
7503 | objc-selector-arg: | |
7504 | objc-selector | |
7505 | objc-keywordname-list | |
7506 | ||
7507 | objc-keywordname-list: | |
7508 | objc-keywordname | |
7509 | objc-keywordname-list objc-keywordname | |
7510 | ||
7511 | objc-keywordname: | |
7512 | objc-selector : | |
7513 | : | |
7514 | */ | |
7515 | ||
7516 | static tree | |
7517 | c_parser_objc_selector_arg (c_parser *parser) | |
7518 | { | |
7519 | tree sel = c_parser_objc_selector (parser); | |
7520 | tree list = NULL_TREE; | |
7521 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7522 | return sel; | |
7523 | while (true) | |
7524 | { | |
7525 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
7526 | return list; | |
7527 | list = chainon (list, build_tree_list (sel, NULL_TREE)); | |
7528 | sel = c_parser_objc_selector (parser); | |
7529 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7530 | break; | |
7531 | } | |
7532 | return list; | |
7533 | } | |
7534 | ||
7535 | /* Parse an objc-receiver. | |
7536 | ||
7537 | objc-receiver: | |
7538 | expression | |
7539 | class-name | |
7540 | type-name | |
7541 | */ | |
7542 | ||
7543 | static tree | |
7544 | c_parser_objc_receiver (c_parser *parser) | |
7545 | { | |
7546 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
7547 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME | |
7548 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
7549 | { | |
7550 | tree id = c_parser_peek_token (parser)->value; | |
7551 | c_parser_consume_token (parser); | |
7552 | return objc_get_class_reference (id); | |
7553 | } | |
928c19bb | 7554 | return c_fully_fold (c_parser_expression (parser).value, false, NULL); |
27bf414c JM |
7555 | } |
7556 | ||
7557 | /* Parse objc-message-args. | |
7558 | ||
7559 | objc-message-args: | |
7560 | objc-selector | |
7561 | objc-keywordarg-list | |
7562 | ||
7563 | objc-keywordarg-list: | |
7564 | objc-keywordarg | |
7565 | objc-keywordarg-list objc-keywordarg | |
7566 | ||
7567 | objc-keywordarg: | |
7568 | objc-selector : objc-keywordexpr | |
7569 | : objc-keywordexpr | |
7570 | */ | |
7571 | ||
7572 | static tree | |
7573 | c_parser_objc_message_args (c_parser *parser) | |
7574 | { | |
7575 | tree sel = c_parser_objc_selector (parser); | |
7576 | tree list = NULL_TREE; | |
7577 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7578 | return sel; | |
7579 | while (true) | |
7580 | { | |
7581 | tree keywordexpr; | |
7582 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
0a7d7dea | 7583 | return error_mark_node; |
27bf414c JM |
7584 | keywordexpr = c_parser_objc_keywordexpr (parser); |
7585 | list = chainon (list, build_tree_list (sel, keywordexpr)); | |
7586 | sel = c_parser_objc_selector (parser); | |
7587 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7588 | break; | |
7589 | } | |
7590 | return list; | |
7591 | } | |
7592 | ||
7593 | /* Parse an objc-keywordexpr. | |
7594 | ||
7595 | objc-keywordexpr: | |
7596 | nonempty-expr-list | |
7597 | */ | |
7598 | ||
7599 | static tree | |
7600 | c_parser_objc_keywordexpr (c_parser *parser) | |
7601 | { | |
bbbbb16a ILT |
7602 | tree ret; |
7603 | VEC(tree,gc) *expr_list = c_parser_expr_list (parser, true, true, NULL); | |
7604 | if (VEC_length (tree, expr_list) == 1) | |
27bf414c JM |
7605 | { |
7606 | /* Just return the expression, remove a level of | |
7607 | indirection. */ | |
bbbbb16a | 7608 | ret = VEC_index (tree, expr_list, 0); |
27bf414c JM |
7609 | } |
7610 | else | |
7611 | { | |
7612 | /* We have a comma expression, we will collapse later. */ | |
c166b898 | 7613 | ret = build_tree_list_vec (expr_list); |
27bf414c | 7614 | } |
c166b898 | 7615 | release_tree_vector (expr_list); |
bbbbb16a | 7616 | return ret; |
27bf414c JM |
7617 | } |
7618 | ||
c165dca7 IS |
7619 | /* A check, needed in several places, that ObjC interface, implementation or |
7620 | method definitions are not prefixed by incorrect items. */ | |
7621 | static bool | |
7622 | c_parser_objc_diagnose_bad_element_prefix (c_parser *parser, | |
7623 | struct c_declspecs *specs) | |
7624 | { | |
9e5b2115 PB |
7625 | if (!specs->declspecs_seen_p || specs->non_sc_seen_p |
7626 | || specs->typespec_kind != ctsk_none) | |
c165dca7 IS |
7627 | { |
7628 | c_parser_error (parser, | |
7629 | "no type or storage class may be specified here,"); | |
7630 | c_parser_skip_to_end_of_block_or_statement (parser); | |
7631 | return true; | |
7632 | } | |
7633 | return false; | |
7634 | } | |
668ea4b1 | 7635 | |
f614132b | 7636 | /* Parse an Objective-C @property declaration. The syntax is: |
668ea4b1 | 7637 | |
f614132b NP |
7638 | objc-property-declaration: |
7639 | '@property' objc-property-attributes[opt] struct-declaration ; | |
668ea4b1 | 7640 | |
f614132b NP |
7641 | objc-property-attributes: |
7642 | '(' objc-property-attribute-list ')' | |
7643 | ||
7644 | objc-property-attribute-list: | |
7645 | objc-property-attribute | |
7646 | objc-property-attribute-list, objc-property-attribute | |
7647 | ||
7648 | objc-property-attribute | |
7649 | 'getter' = identifier | |
7650 | 'setter' = identifier | |
7651 | 'readonly' | |
7652 | 'readwrite' | |
7653 | 'assign' | |
7654 | 'retain' | |
7655 | 'copy' | |
7656 | 'nonatomic' | |
7657 | ||
7658 | For example: | |
7659 | @property NSString *name; | |
7660 | @property (readonly) id object; | |
7661 | @property (retain, nonatomic, getter=getTheName) id name; | |
7662 | @property int a, b, c; | |
7663 | ||
7664 | PS: This function is identical to cp_parser_objc_at_propery_declaration | |
200290f2 | 7665 | for C++. Keep them in sync. */ |
668ea4b1 | 7666 | static void |
f614132b | 7667 | c_parser_objc_at_property_declaration (c_parser *parser) |
668ea4b1 | 7668 | { |
200290f2 NP |
7669 | /* The following variables hold the attributes of the properties as |
7670 | parsed. They are 'false' or 'NULL_TREE' if the attribute was not | |
7671 | seen. When we see an attribute, we set them to 'true' (if they | |
7672 | are boolean properties) or to the identifier (if they have an | |
7673 | argument, ie, for getter and setter). Note that here we only | |
7674 | parse the list of attributes, check the syntax and accumulate the | |
7675 | attributes that we find. objc_add_property_declaration() will | |
7676 | then process the information. */ | |
7677 | bool property_assign = false; | |
7678 | bool property_copy = false; | |
7679 | tree property_getter_ident = NULL_TREE; | |
7680 | bool property_nonatomic = false; | |
7681 | bool property_readonly = false; | |
7682 | bool property_readwrite = false; | |
7683 | bool property_retain = false; | |
7684 | tree property_setter_ident = NULL_TREE; | |
200290f2 NP |
7685 | |
7686 | /* 'properties' is the list of properties that we read. Usually a | |
7687 | single one, but maybe more (eg, in "@property int a, b, c;" there | |
7688 | are three). */ | |
f614132b NP |
7689 | tree properties; |
7690 | location_t loc; | |
200290f2 | 7691 | |
f614132b NP |
7692 | loc = c_parser_peek_token (parser)->location; |
7693 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)); | |
668ea4b1 | 7694 | |
f614132b | 7695 | c_parser_consume_token (parser); /* Eat '@property'. */ |
668ea4b1 | 7696 | |
f614132b NP |
7697 | /* Parse the optional attribute list... */ |
7698 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
668ea4b1 | 7699 | { |
f614132b NP |
7700 | /* Eat the '(' */ |
7701 | c_parser_consume_token (parser); | |
7702 | ||
7703 | /* Property attribute keywords are valid now. */ | |
7704 | parser->objc_property_attr_context = true; | |
7705 | ||
7706 | while (true) | |
668ea4b1 | 7707 | { |
f614132b NP |
7708 | bool syntax_error = false; |
7709 | c_token *token = c_parser_peek_token (parser); | |
7710 | enum rid keyword; | |
7711 | ||
7712 | if (token->type != CPP_KEYWORD) | |
7713 | { | |
7714 | if (token->type == CPP_CLOSE_PAREN) | |
7715 | c_parser_error (parser, "expected identifier"); | |
7716 | else | |
7717 | { | |
7718 | c_parser_consume_token (parser); | |
7719 | c_parser_error (parser, "unknown property attribute"); | |
7720 | } | |
7721 | break; | |
7722 | } | |
7723 | keyword = token->keyword; | |
200290f2 | 7724 | c_parser_consume_token (parser); |
f614132b NP |
7725 | switch (keyword) |
7726 | { | |
200290f2 | 7727 | case RID_ASSIGN: property_assign = true; break; |
200290f2 NP |
7728 | case RID_COPY: property_copy = true; break; |
7729 | case RID_NONATOMIC: property_nonatomic = true; break; | |
7730 | case RID_READONLY: property_readonly = true; break; | |
7731 | case RID_READWRITE: property_readwrite = true; break; | |
7732 | case RID_RETAIN: property_retain = true; break; | |
7733 | ||
f614132b NP |
7734 | case RID_GETTER: |
7735 | case RID_SETTER: | |
f614132b NP |
7736 | if (c_parser_next_token_is_not (parser, CPP_EQ)) |
7737 | { | |
7738 | c_parser_error (parser, | |
46a88c12 | 7739 | "getter/setter attribute must be followed by %<=%>"); |
f614132b NP |
7740 | syntax_error = true; |
7741 | break; | |
7742 | } | |
7743 | c_parser_consume_token (parser); /* eat the = */ | |
7744 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7745 | { | |
7746 | c_parser_error (parser, "expected identifier"); | |
7747 | syntax_error = true; | |
7748 | break; | |
7749 | } | |
f614132b NP |
7750 | if (keyword == RID_SETTER) |
7751 | { | |
200290f2 NP |
7752 | if (property_setter_ident != NULL_TREE) |
7753 | c_parser_error (parser, "the %<setter%> attribute may only be specified once"); | |
7754 | else | |
7755 | property_setter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 7756 | c_parser_consume_token (parser); |
200290f2 NP |
7757 | if (c_parser_next_token_is_not (parser, CPP_COLON)) |
7758 | c_parser_error (parser, "setter name must terminate with %<:%>"); | |
7759 | else | |
7760 | c_parser_consume_token (parser); | |
f614132b | 7761 | } |
46a88c12 | 7762 | else |
f614132b | 7763 | { |
200290f2 NP |
7764 | if (property_getter_ident != NULL_TREE) |
7765 | c_parser_error (parser, "the %<getter%> attribute may only be specified once"); | |
7766 | else | |
7767 | property_getter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 7768 | c_parser_consume_token (parser); |
f614132b | 7769 | } |
200290f2 NP |
7770 | break; |
7771 | default: | |
7772 | c_parser_error (parser, "unknown property attribute"); | |
f614132b NP |
7773 | syntax_error = true; |
7774 | break; | |
7775 | } | |
7776 | ||
7777 | if (syntax_error) | |
668ea4b1 | 7778 | break; |
f614132b NP |
7779 | |
7780 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
668ea4b1 | 7781 | c_parser_consume_token (parser); |
f614132b | 7782 | else |
668ea4b1 IS |
7783 | break; |
7784 | } | |
f614132b NP |
7785 | parser->objc_property_attr_context = false; |
7786 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7787 | } | |
7788 | /* ... and the property declaration(s). */ | |
7789 | properties = c_parser_struct_declaration (parser); | |
668ea4b1 | 7790 | |
f614132b NP |
7791 | if (properties == error_mark_node) |
7792 | { | |
7793 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7794 | parser->error = false; | |
7795 | return; | |
7796 | } | |
668ea4b1 | 7797 | |
f614132b NP |
7798 | if (properties == NULL_TREE) |
7799 | c_parser_error (parser, "expected identifier"); | |
7800 | else | |
7801 | { | |
7802 | /* Comma-separated properties are chained together in | |
7803 | reverse order; add them one by one. */ | |
7804 | properties = nreverse (properties); | |
7805 | ||
7806 | for (; properties; properties = TREE_CHAIN (properties)) | |
200290f2 NP |
7807 | objc_add_property_declaration (loc, copy_node (properties), |
7808 | property_readonly, property_readwrite, | |
7809 | property_assign, property_retain, | |
7810 | property_copy, property_nonatomic, | |
46a88c12 | 7811 | property_getter_ident, property_setter_ident); |
f614132b | 7812 | } |
668ea4b1 IS |
7813 | |
7814 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
f614132b | 7815 | parser->error = false; |
668ea4b1 IS |
7816 | } |
7817 | ||
da57d1b9 NP |
7818 | /* Parse an Objective-C @synthesize declaration. The syntax is: |
7819 | ||
7820 | objc-synthesize-declaration: | |
7821 | @synthesize objc-synthesize-identifier-list ; | |
7822 | ||
7823 | objc-synthesize-identifier-list: | |
7824 | objc-synthesize-identifier | |
7825 | objc-synthesize-identifier-list, objc-synthesize-identifier | |
7826 | ||
7827 | objc-synthesize-identifier | |
7828 | identifier | |
7829 | identifier = identifier | |
7830 | ||
7831 | For example: | |
7832 | @synthesize MyProperty; | |
7833 | @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty; | |
7834 | ||
7835 | PS: This function is identical to cp_parser_objc_at_synthesize_declaration | |
7836 | for C++. Keep them in sync. | |
7837 | */ | |
7838 | static void | |
7839 | c_parser_objc_at_synthesize_declaration (c_parser *parser) | |
7840 | { | |
7841 | tree list = NULL_TREE; | |
7842 | location_t loc; | |
7843 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE)); | |
7844 | loc = c_parser_peek_token (parser)->location; | |
7845 | ||
7846 | c_parser_consume_token (parser); | |
7847 | while (true) | |
7848 | { | |
7849 | tree property, ivar; | |
7850 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7851 | { | |
7852 | c_parser_error (parser, "expected identifier"); | |
7853 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7854 | /* Once we find the semicolon, we can resume normal parsing. | |
7855 | We have to reset parser->error manually because | |
7856 | c_parser_skip_until_found() won't reset it for us if the | |
7857 | next token is precisely a semicolon. */ | |
7858 | parser->error = false; | |
7859 | return; | |
7860 | } | |
7861 | property = c_parser_peek_token (parser)->value; | |
7862 | c_parser_consume_token (parser); | |
7863 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
7864 | { | |
7865 | c_parser_consume_token (parser); | |
7866 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7867 | { | |
7868 | c_parser_error (parser, "expected identifier"); | |
7869 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7870 | parser->error = false; | |
7871 | return; | |
7872 | } | |
7873 | ivar = c_parser_peek_token (parser)->value; | |
7874 | c_parser_consume_token (parser); | |
7875 | } | |
7876 | else | |
7877 | ivar = NULL_TREE; | |
7878 | list = chainon (list, build_tree_list (ivar, property)); | |
7879 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7880 | c_parser_consume_token (parser); | |
7881 | else | |
7882 | break; | |
7883 | } | |
7884 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
7885 | objc_add_synthesize_declaration (loc, list); | |
7886 | } | |
7887 | ||
7888 | /* Parse an Objective-C @dynamic declaration. The syntax is: | |
7889 | ||
7890 | objc-dynamic-declaration: | |
7891 | @dynamic identifier-list ; | |
7892 | ||
7893 | For example: | |
7894 | @dynamic MyProperty; | |
7895 | @dynamic MyProperty, AnotherProperty; | |
7896 | ||
7897 | PS: This function is identical to cp_parser_objc_at_dynamic_declaration | |
7898 | for C++. Keep them in sync. | |
7899 | */ | |
7900 | static void | |
7901 | c_parser_objc_at_dynamic_declaration (c_parser *parser) | |
7902 | { | |
7903 | tree list = NULL_TREE; | |
7904 | location_t loc; | |
7905 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC)); | |
7906 | loc = c_parser_peek_token (parser)->location; | |
7907 | ||
7908 | c_parser_consume_token (parser); | |
7909 | while (true) | |
7910 | { | |
7911 | tree property; | |
7912 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7913 | { | |
7914 | c_parser_error (parser, "expected identifier"); | |
7915 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7916 | parser->error = false; | |
7917 | return; | |
7918 | } | |
7919 | property = c_parser_peek_token (parser)->value; | |
7920 | list = chainon (list, build_tree_list (NULL_TREE, property)); | |
7921 | c_parser_consume_token (parser); | |
7922 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7923 | c_parser_consume_token (parser); | |
7924 | else | |
7925 | break; | |
7926 | } | |
7927 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
7928 | objc_add_dynamic_declaration (loc, list); | |
7929 | } | |
7930 | ||
27bf414c | 7931 | \f |
953ff289 DN |
7932 | /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore |
7933 | should be considered, statements. ALLOW_STMT is true if we're within | |
7934 | the context of a function and such pragmas are to be allowed. Returns | |
7935 | true if we actually parsed such a pragma. */ | |
27bf414c | 7936 | |
bc4071dd | 7937 | static bool |
953ff289 | 7938 | c_parser_pragma (c_parser *parser, enum pragma_context context) |
bc4071dd RH |
7939 | { |
7940 | unsigned int id; | |
7941 | ||
7942 | id = c_parser_peek_token (parser)->pragma_kind; | |
7943 | gcc_assert (id != PRAGMA_NONE); | |
7944 | ||
7945 | switch (id) | |
7946 | { | |
953ff289 DN |
7947 | case PRAGMA_OMP_BARRIER: |
7948 | if (context != pragma_compound) | |
7949 | { | |
7950 | if (context == pragma_stmt) | |
7951 | c_parser_error (parser, "%<#pragma omp barrier%> may only be " | |
7952 | "used in compound statements"); | |
7953 | goto bad_stmt; | |
7954 | } | |
7955 | c_parser_omp_barrier (parser); | |
7956 | return false; | |
7957 | ||
7958 | case PRAGMA_OMP_FLUSH: | |
7959 | if (context != pragma_compound) | |
7960 | { | |
7961 | if (context == pragma_stmt) | |
7962 | c_parser_error (parser, "%<#pragma omp flush%> may only be " | |
7963 | "used in compound statements"); | |
7964 | goto bad_stmt; | |
7965 | } | |
7966 | c_parser_omp_flush (parser); | |
7967 | return false; | |
7968 | ||
a68ab351 JJ |
7969 | case PRAGMA_OMP_TASKWAIT: |
7970 | if (context != pragma_compound) | |
7971 | { | |
7972 | if (context == pragma_stmt) | |
7973 | c_parser_error (parser, "%<#pragma omp taskwait%> may only be " | |
7974 | "used in compound statements"); | |
7975 | goto bad_stmt; | |
7976 | } | |
7977 | c_parser_omp_taskwait (parser); | |
7978 | return false; | |
7979 | ||
953ff289 DN |
7980 | case PRAGMA_OMP_THREADPRIVATE: |
7981 | c_parser_omp_threadprivate (parser); | |
7982 | return false; | |
7983 | ||
7984 | case PRAGMA_OMP_SECTION: | |
3ba09659 AH |
7985 | error_at (c_parser_peek_token (parser)->location, |
7986 | "%<#pragma omp section%> may only be used in " | |
7987 | "%<#pragma omp sections%> construct"); | |
953ff289 DN |
7988 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); |
7989 | return false; | |
7990 | ||
bc4071dd RH |
7991 | case PRAGMA_GCC_PCH_PREPROCESS: |
7992 | c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first"); | |
7993 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
7994 | return false; | |
7995 | ||
7996 | default: | |
953ff289 DN |
7997 | if (id < PRAGMA_FIRST_EXTERNAL) |
7998 | { | |
7999 | if (context == pragma_external) | |
8000 | { | |
8001 | bad_stmt: | |
8002 | c_parser_error (parser, "expected declaration specifiers"); | |
8003 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
8004 | return false; | |
8005 | } | |
8006 | c_parser_omp_construct (parser); | |
8007 | return true; | |
8008 | } | |
bc4071dd RH |
8009 | break; |
8010 | } | |
8011 | ||
8012 | c_parser_consume_pragma (parser); | |
8013 | c_invoke_pragma_handler (id); | |
27bf414c | 8014 | |
b8698a0f | 8015 | /* Skip to EOL, but suppress any error message. Those will have been |
bc4071dd RH |
8016 | generated by the handler routine through calling error, as opposed |
8017 | to calling c_parser_error. */ | |
8018 | parser->error = true; | |
8019 | c_parser_skip_to_pragma_eol (parser); | |
8020 | ||
8021 | return false; | |
8022 | } | |
8023 | ||
8024 | /* The interface the pragma parsers have to the lexer. */ | |
8025 | ||
8026 | enum cpp_ttype | |
8027 | pragma_lex (tree *value) | |
8028 | { | |
8029 | c_token *tok = c_parser_peek_token (the_parser); | |
8030 | enum cpp_ttype ret = tok->type; | |
8031 | ||
8032 | *value = tok->value; | |
8033 | if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF) | |
8034 | ret = CPP_EOF; | |
8035 | else | |
8036 | { | |
8037 | if (ret == CPP_KEYWORD) | |
8038 | ret = CPP_NAME; | |
8039 | c_parser_consume_token (the_parser); | |
8040 | } | |
8041 | ||
8042 | return ret; | |
8043 | } | |
8044 | ||
8045 | static void | |
8046 | c_parser_pragma_pch_preprocess (c_parser *parser) | |
8047 | { | |
8048 | tree name = NULL; | |
8049 | ||
8050 | c_parser_consume_pragma (parser); | |
8051 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
8052 | { | |
8053 | name = c_parser_peek_token (parser)->value; | |
8054 | c_parser_consume_token (parser); | |
8055 | } | |
8056 | else | |
8057 | c_parser_error (parser, "expected string literal"); | |
8058 | c_parser_skip_to_pragma_eol (parser); | |
8059 | ||
8060 | if (name) | |
8061 | c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name)); | |
8062 | } | |
953ff289 DN |
8063 | \f |
8064 | /* OpenMP 2.5 parsing routines. */ | |
8065 | ||
8066 | /* Returns name of the next clause. | |
8067 | If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and | |
8068 | the token is not consumed. Otherwise appropriate pragma_omp_clause is | |
8069 | returned and the token is consumed. */ | |
8070 | ||
8071 | static pragma_omp_clause | |
8072 | c_parser_omp_clause_name (c_parser *parser) | |
8073 | { | |
8074 | pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE; | |
8075 | ||
8076 | if (c_parser_next_token_is_keyword (parser, RID_IF)) | |
8077 | result = PRAGMA_OMP_CLAUSE_IF; | |
8078 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
8079 | result = PRAGMA_OMP_CLAUSE_DEFAULT; | |
8080 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
8081 | { | |
8082 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
8083 | ||
8084 | switch (p[0]) | |
8085 | { | |
8086 | case 'c': | |
a68ab351 JJ |
8087 | if (!strcmp ("collapse", p)) |
8088 | result = PRAGMA_OMP_CLAUSE_COLLAPSE; | |
8089 | else if (!strcmp ("copyin", p)) | |
953ff289 DN |
8090 | result = PRAGMA_OMP_CLAUSE_COPYIN; |
8091 | else if (!strcmp ("copyprivate", p)) | |
8092 | result = PRAGMA_OMP_CLAUSE_COPYPRIVATE; | |
8093 | break; | |
8094 | case 'f': | |
8095 | if (!strcmp ("firstprivate", p)) | |
8096 | result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE; | |
8097 | break; | |
8098 | case 'l': | |
8099 | if (!strcmp ("lastprivate", p)) | |
8100 | result = PRAGMA_OMP_CLAUSE_LASTPRIVATE; | |
8101 | break; | |
8102 | case 'n': | |
8103 | if (!strcmp ("nowait", p)) | |
8104 | result = PRAGMA_OMP_CLAUSE_NOWAIT; | |
8105 | else if (!strcmp ("num_threads", p)) | |
8106 | result = PRAGMA_OMP_CLAUSE_NUM_THREADS; | |
8107 | break; | |
8108 | case 'o': | |
8109 | if (!strcmp ("ordered", p)) | |
8110 | result = PRAGMA_OMP_CLAUSE_ORDERED; | |
8111 | break; | |
8112 | case 'p': | |
8113 | if (!strcmp ("private", p)) | |
8114 | result = PRAGMA_OMP_CLAUSE_PRIVATE; | |
8115 | break; | |
8116 | case 'r': | |
8117 | if (!strcmp ("reduction", p)) | |
8118 | result = PRAGMA_OMP_CLAUSE_REDUCTION; | |
8119 | break; | |
8120 | case 's': | |
8121 | if (!strcmp ("schedule", p)) | |
8122 | result = PRAGMA_OMP_CLAUSE_SCHEDULE; | |
8123 | else if (!strcmp ("shared", p)) | |
8124 | result = PRAGMA_OMP_CLAUSE_SHARED; | |
8125 | break; | |
a68ab351 JJ |
8126 | case 'u': |
8127 | if (!strcmp ("untied", p)) | |
8128 | result = PRAGMA_OMP_CLAUSE_UNTIED; | |
8129 | break; | |
953ff289 DN |
8130 | } |
8131 | } | |
8132 | ||
8133 | if (result != PRAGMA_OMP_CLAUSE_NONE) | |
8134 | c_parser_consume_token (parser); | |
8135 | ||
8136 | return result; | |
8137 | } | |
8138 | ||
8139 | /* Validate that a clause of the given type does not already exist. */ | |
8140 | ||
8141 | static void | |
d75d71e0 ILT |
8142 | check_no_duplicate_clause (tree clauses, enum omp_clause_code code, |
8143 | const char *name) | |
953ff289 DN |
8144 | { |
8145 | tree c; | |
8146 | ||
8147 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
aaf46ef9 | 8148 | if (OMP_CLAUSE_CODE (c) == code) |
953ff289 | 8149 | { |
c2255bc4 AH |
8150 | location_t loc = OMP_CLAUSE_LOCATION (c); |
8151 | error_at (loc, "too many %qs clauses", name); | |
953ff289 DN |
8152 | break; |
8153 | } | |
8154 | } | |
8155 | ||
8156 | /* OpenMP 2.5: | |
8157 | variable-list: | |
8158 | identifier | |
8159 | variable-list , identifier | |
8160 | ||
c2255bc4 AH |
8161 | If KIND is nonzero, create the appropriate node and install the |
8162 | decl in OMP_CLAUSE_DECL and add the node to the head of the list. | |
8163 | If KIND is nonzero, CLAUSE_LOC is the location of the clause. | |
953ff289 DN |
8164 | |
8165 | If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE; | |
8166 | return the list created. */ | |
8167 | ||
8168 | static tree | |
c2255bc4 AH |
8169 | c_parser_omp_variable_list (c_parser *parser, |
8170 | location_t clause_loc, | |
8171 | enum omp_clause_code kind, | |
aaf46ef9 | 8172 | tree list) |
953ff289 DN |
8173 | { |
8174 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
8175 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
8176 | c_parser_error (parser, "expected identifier"); | |
8177 | ||
8178 | while (c_parser_next_token_is (parser, CPP_NAME) | |
8179 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
8180 | { | |
8181 | tree t = lookup_name (c_parser_peek_token (parser)->value); | |
8182 | ||
8183 | if (t == NULL_TREE) | |
c2255bc4 AH |
8184 | undeclared_variable (c_parser_peek_token (parser)->location, |
8185 | c_parser_peek_token (parser)->value); | |
953ff289 DN |
8186 | else if (t == error_mark_node) |
8187 | ; | |
8188 | else if (kind != 0) | |
8189 | { | |
c2255bc4 | 8190 | tree u = build_omp_clause (clause_loc, kind); |
953ff289 DN |
8191 | OMP_CLAUSE_DECL (u) = t; |
8192 | OMP_CLAUSE_CHAIN (u) = list; | |
8193 | list = u; | |
8194 | } | |
8195 | else | |
8196 | list = tree_cons (t, NULL_TREE, list); | |
8197 | ||
8198 | c_parser_consume_token (parser); | |
8199 | ||
8200 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
8201 | break; | |
8202 | ||
8203 | c_parser_consume_token (parser); | |
8204 | } | |
8205 | ||
8206 | return list; | |
8207 | } | |
8208 | ||
8209 | /* Similarly, but expect leading and trailing parenthesis. This is a very | |
8210 | common case for omp clauses. */ | |
8211 | ||
8212 | static tree | |
d75d71e0 ILT |
8213 | c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind, |
8214 | tree list) | |
953ff289 | 8215 | { |
c2255bc4 AH |
8216 | /* The clauses location. */ |
8217 | location_t loc = c_parser_peek_token (parser)->location; | |
8218 | ||
953ff289 DN |
8219 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8220 | { | |
c2255bc4 | 8221 | list = c_parser_omp_variable_list (parser, loc, kind, list); |
953ff289 DN |
8222 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8223 | } | |
8224 | return list; | |
8225 | } | |
8226 | ||
a68ab351 JJ |
8227 | /* OpenMP 3.0: |
8228 | collapse ( constant-expression ) */ | |
8229 | ||
8230 | static tree | |
8231 | c_parser_omp_clause_collapse (c_parser *parser, tree list) | |
8232 | { | |
8233 | tree c, num = error_mark_node; | |
8234 | HOST_WIDE_INT n; | |
8235 | location_t loc; | |
8236 | ||
8237 | check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse"); | |
8238 | ||
8239 | loc = c_parser_peek_token (parser)->location; | |
8240 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8241 | { | |
8242 | num = c_parser_expr_no_commas (parser, NULL).value; | |
8243 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8244 | } | |
8245 | if (num == error_mark_node) | |
8246 | return list; | |
8247 | if (!INTEGRAL_TYPE_P (TREE_TYPE (num)) | |
8248 | || !host_integerp (num, 0) | |
8249 | || (n = tree_low_cst (num, 0)) <= 0 | |
8250 | || (int) n != n) | |
8251 | { | |
3ba09659 AH |
8252 | error_at (loc, |
8253 | "collapse argument needs positive constant integer expression"); | |
a68ab351 JJ |
8254 | return list; |
8255 | } | |
c2255bc4 | 8256 | c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE); |
a68ab351 JJ |
8257 | OMP_CLAUSE_COLLAPSE_EXPR (c) = num; |
8258 | OMP_CLAUSE_CHAIN (c) = list; | |
8259 | return c; | |
8260 | } | |
8261 | ||
953ff289 DN |
8262 | /* OpenMP 2.5: |
8263 | copyin ( variable-list ) */ | |
8264 | ||
8265 | static tree | |
8266 | c_parser_omp_clause_copyin (c_parser *parser, tree list) | |
8267 | { | |
8268 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list); | |
8269 | } | |
8270 | ||
8271 | /* OpenMP 2.5: | |
8272 | copyprivate ( variable-list ) */ | |
8273 | ||
8274 | static tree | |
8275 | c_parser_omp_clause_copyprivate (c_parser *parser, tree list) | |
8276 | { | |
8277 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list); | |
8278 | } | |
8279 | ||
8280 | /* OpenMP 2.5: | |
8281 | default ( shared | none ) */ | |
8282 | ||
8283 | static tree | |
8284 | c_parser_omp_clause_default (c_parser *parser, tree list) | |
8285 | { | |
8286 | enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
c2255bc4 | 8287 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8288 | tree c; |
8289 | ||
8290 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8291 | return list; | |
8292 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
8293 | { | |
8294 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
8295 | ||
8296 | switch (p[0]) | |
8297 | { | |
8298 | case 'n': | |
8299 | if (strcmp ("none", p) != 0) | |
8300 | goto invalid_kind; | |
8301 | kind = OMP_CLAUSE_DEFAULT_NONE; | |
8302 | break; | |
8303 | ||
8304 | case 's': | |
8305 | if (strcmp ("shared", p) != 0) | |
8306 | goto invalid_kind; | |
8307 | kind = OMP_CLAUSE_DEFAULT_SHARED; | |
8308 | break; | |
8309 | ||
8310 | default: | |
8311 | goto invalid_kind; | |
8312 | } | |
8313 | ||
8314 | c_parser_consume_token (parser); | |
8315 | } | |
8316 | else | |
8317 | { | |
8318 | invalid_kind: | |
8319 | c_parser_error (parser, "expected %<none%> or %<shared%>"); | |
8320 | } | |
8321 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8322 | ||
8323 | if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
8324 | return list; | |
8325 | ||
8326 | check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default"); | |
c2255bc4 | 8327 | c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT); |
953ff289 DN |
8328 | OMP_CLAUSE_CHAIN (c) = list; |
8329 | OMP_CLAUSE_DEFAULT_KIND (c) = kind; | |
8330 | ||
8331 | return c; | |
8332 | } | |
8333 | ||
8334 | /* OpenMP 2.5: | |
8335 | firstprivate ( variable-list ) */ | |
8336 | ||
8337 | static tree | |
8338 | c_parser_omp_clause_firstprivate (c_parser *parser, tree list) | |
8339 | { | |
8340 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list); | |
8341 | } | |
8342 | ||
8343 | /* OpenMP 2.5: | |
8344 | if ( expression ) */ | |
8345 | ||
8346 | static tree | |
8347 | c_parser_omp_clause_if (c_parser *parser, tree list) | |
8348 | { | |
c2255bc4 | 8349 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8350 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
8351 | { | |
8352 | tree t = c_parser_paren_condition (parser); | |
8353 | tree c; | |
8354 | ||
8355 | check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if"); | |
8356 | ||
c2255bc4 | 8357 | c = build_omp_clause (loc, OMP_CLAUSE_IF); |
953ff289 DN |
8358 | OMP_CLAUSE_IF_EXPR (c) = t; |
8359 | OMP_CLAUSE_CHAIN (c) = list; | |
8360 | list = c; | |
8361 | } | |
8362 | else | |
8363 | c_parser_error (parser, "expected %<(%>"); | |
8364 | ||
8365 | return list; | |
8366 | } | |
8367 | ||
8368 | /* OpenMP 2.5: | |
8369 | lastprivate ( variable-list ) */ | |
8370 | ||
8371 | static tree | |
8372 | c_parser_omp_clause_lastprivate (c_parser *parser, tree list) | |
8373 | { | |
8374 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list); | |
8375 | } | |
8376 | ||
8377 | /* OpenMP 2.5: | |
8378 | nowait */ | |
8379 | ||
8380 | static tree | |
8381 | c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
8382 | { | |
8383 | tree c; | |
c2255bc4 | 8384 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8385 | |
8386 | check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait"); | |
8387 | ||
c2255bc4 | 8388 | c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT); |
953ff289 DN |
8389 | OMP_CLAUSE_CHAIN (c) = list; |
8390 | return c; | |
8391 | } | |
8392 | ||
8393 | /* OpenMP 2.5: | |
8394 | num_threads ( expression ) */ | |
8395 | ||
8396 | static tree | |
8397 | c_parser_omp_clause_num_threads (c_parser *parser, tree list) | |
8398 | { | |
c2255bc4 | 8399 | location_t num_threads_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8400 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8401 | { | |
c7412148 | 8402 | location_t expr_loc = c_parser_peek_token (parser)->location; |
953ff289 | 8403 | tree c, t = c_parser_expression (parser).value; |
928c19bb | 8404 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
8405 | |
8406 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8407 | ||
8408 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
8409 | { | |
8410 | c_parser_error (parser, "expected integer expression"); | |
8411 | return list; | |
8412 | } | |
8413 | ||
8414 | /* Attempt to statically determine when the number isn't positive. */ | |
db3927fb | 8415 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, |
953ff289 | 8416 | build_int_cst (TREE_TYPE (t), 0)); |
c2255bc4 AH |
8417 | if (CAN_HAVE_LOCATION_P (c)) |
8418 | SET_EXPR_LOCATION (c, expr_loc); | |
953ff289 DN |
8419 | if (c == boolean_true_node) |
8420 | { | |
3ba09659 AH |
8421 | warning_at (expr_loc, 0, |
8422 | "%<num_threads%> value must be positive"); | |
953ff289 DN |
8423 | t = integer_one_node; |
8424 | } | |
8425 | ||
8426 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads"); | |
8427 | ||
c2255bc4 | 8428 | c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS); |
953ff289 DN |
8429 | OMP_CLAUSE_NUM_THREADS_EXPR (c) = t; |
8430 | OMP_CLAUSE_CHAIN (c) = list; | |
8431 | list = c; | |
8432 | } | |
8433 | ||
8434 | return list; | |
8435 | } | |
8436 | ||
8437 | /* OpenMP 2.5: | |
8438 | ordered */ | |
8439 | ||
8440 | static tree | |
c2255bc4 | 8441 | c_parser_omp_clause_ordered (c_parser *parser, tree list) |
953ff289 DN |
8442 | { |
8443 | tree c; | |
8444 | ||
8445 | check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered"); | |
8446 | ||
c2255bc4 AH |
8447 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
8448 | OMP_CLAUSE_ORDERED); | |
953ff289 | 8449 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 8450 | |
953ff289 DN |
8451 | return c; |
8452 | } | |
8453 | ||
8454 | /* OpenMP 2.5: | |
8455 | private ( variable-list ) */ | |
8456 | ||
8457 | static tree | |
8458 | c_parser_omp_clause_private (c_parser *parser, tree list) | |
8459 | { | |
8460 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list); | |
8461 | } | |
8462 | ||
8463 | /* OpenMP 2.5: | |
8464 | reduction ( reduction-operator : variable-list ) | |
8465 | ||
8466 | reduction-operator: | |
8467 | One of: + * - & ^ | && || */ | |
8468 | ||
8469 | static tree | |
8470 | c_parser_omp_clause_reduction (c_parser *parser, tree list) | |
8471 | { | |
c2255bc4 | 8472 | location_t clause_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8473 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8474 | { | |
8475 | enum tree_code code; | |
8476 | ||
8477 | switch (c_parser_peek_token (parser)->type) | |
8478 | { | |
8479 | case CPP_PLUS: | |
8480 | code = PLUS_EXPR; | |
8481 | break; | |
8482 | case CPP_MULT: | |
8483 | code = MULT_EXPR; | |
8484 | break; | |
8485 | case CPP_MINUS: | |
8486 | code = MINUS_EXPR; | |
8487 | break; | |
8488 | case CPP_AND: | |
8489 | code = BIT_AND_EXPR; | |
8490 | break; | |
8491 | case CPP_XOR: | |
8492 | code = BIT_XOR_EXPR; | |
8493 | break; | |
8494 | case CPP_OR: | |
8495 | code = BIT_IOR_EXPR; | |
8496 | break; | |
8497 | case CPP_AND_AND: | |
8498 | code = TRUTH_ANDIF_EXPR; | |
8499 | break; | |
8500 | case CPP_OR_OR: | |
8501 | code = TRUTH_ORIF_EXPR; | |
8502 | break; | |
8503 | default: | |
8504 | c_parser_error (parser, | |
8505 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
8506 | "%<^%>, %<|%>, %<&&%>, or %<||%>"); | |
8507 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
8508 | return list; | |
8509 | } | |
8510 | c_parser_consume_token (parser); | |
8511 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
8512 | { | |
8513 | tree nl, c; | |
8514 | ||
c2255bc4 AH |
8515 | nl = c_parser_omp_variable_list (parser, clause_loc, |
8516 | OMP_CLAUSE_REDUCTION, list); | |
953ff289 DN |
8517 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
8518 | OMP_CLAUSE_REDUCTION_CODE (c) = code; | |
8519 | ||
8520 | list = nl; | |
8521 | } | |
8522 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8523 | } | |
8524 | return list; | |
8525 | } | |
8526 | ||
8527 | /* OpenMP 2.5: | |
8528 | schedule ( schedule-kind ) | |
8529 | schedule ( schedule-kind , expression ) | |
8530 | ||
8531 | schedule-kind: | |
a68ab351 | 8532 | static | dynamic | guided | runtime | auto |
953ff289 DN |
8533 | */ |
8534 | ||
8535 | static tree | |
8536 | c_parser_omp_clause_schedule (c_parser *parser, tree list) | |
8537 | { | |
8538 | tree c, t; | |
c2255bc4 | 8539 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8540 | |
8541 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8542 | return list; | |
8543 | ||
c2255bc4 | 8544 | c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE); |
953ff289 DN |
8545 | |
8546 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
8547 | { | |
8548 | tree kind = c_parser_peek_token (parser)->value; | |
8549 | const char *p = IDENTIFIER_POINTER (kind); | |
8550 | ||
8551 | switch (p[0]) | |
8552 | { | |
8553 | case 'd': | |
8554 | if (strcmp ("dynamic", p) != 0) | |
8555 | goto invalid_kind; | |
8556 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC; | |
8557 | break; | |
8558 | ||
8559 | case 'g': | |
8560 | if (strcmp ("guided", p) != 0) | |
8561 | goto invalid_kind; | |
8562 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED; | |
8563 | break; | |
8564 | ||
8565 | case 'r': | |
8566 | if (strcmp ("runtime", p) != 0) | |
8567 | goto invalid_kind; | |
8568 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME; | |
8569 | break; | |
8570 | ||
8571 | default: | |
8572 | goto invalid_kind; | |
8573 | } | |
8574 | } | |
8575 | else if (c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
8576 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC; | |
a68ab351 JJ |
8577 | else if (c_parser_next_token_is_keyword (parser, RID_AUTO)) |
8578 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO; | |
953ff289 DN |
8579 | else |
8580 | goto invalid_kind; | |
8581 | ||
8582 | c_parser_consume_token (parser); | |
8583 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8584 | { | |
c7412148 | 8585 | location_t here; |
953ff289 DN |
8586 | c_parser_consume_token (parser); |
8587 | ||
c7412148 | 8588 | here = c_parser_peek_token (parser)->location; |
953ff289 | 8589 | t = c_parser_expr_no_commas (parser, NULL).value; |
928c19bb | 8590 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
8591 | |
8592 | if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
3ba09659 AH |
8593 | error_at (here, "schedule %<runtime%> does not take " |
8594 | "a %<chunk_size%> parameter"); | |
a68ab351 | 8595 | else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO) |
3ba09659 AH |
8596 | error_at (here, |
8597 | "schedule %<auto%> does not take " | |
8598 | "a %<chunk_size%> parameter"); | |
953ff289 DN |
8599 | else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE) |
8600 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
8601 | else | |
8602 | c_parser_error (parser, "expected integer expression"); | |
8603 | ||
8604 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8605 | } | |
8606 | else | |
8607 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
8608 | "expected %<,%> or %<)%>"); | |
8609 | ||
8610 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
8611 | OMP_CLAUSE_CHAIN (c) = list; | |
8612 | return c; | |
8613 | ||
8614 | invalid_kind: | |
8615 | c_parser_error (parser, "invalid schedule kind"); | |
8616 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
8617 | return list; | |
8618 | } | |
8619 | ||
8620 | /* OpenMP 2.5: | |
8621 | shared ( variable-list ) */ | |
8622 | ||
8623 | static tree | |
8624 | c_parser_omp_clause_shared (c_parser *parser, tree list) | |
8625 | { | |
8626 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list); | |
8627 | } | |
8628 | ||
a68ab351 JJ |
8629 | /* OpenMP 3.0: |
8630 | untied */ | |
8631 | ||
8632 | static tree | |
8633 | c_parser_omp_clause_untied (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
8634 | { | |
8635 | tree c; | |
8636 | ||
8637 | /* FIXME: Should we allow duplicates? */ | |
8638 | check_no_duplicate_clause (list, OMP_CLAUSE_UNTIED, "untied"); | |
8639 | ||
c2255bc4 AH |
8640 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
8641 | OMP_CLAUSE_UNTIED); | |
a68ab351 | 8642 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 8643 | |
a68ab351 JJ |
8644 | return c; |
8645 | } | |
8646 | ||
953ff289 DN |
8647 | /* Parse all OpenMP clauses. The set clauses allowed by the directive |
8648 | is a bitmask in MASK. Return the list of clauses found; the result | |
8649 | of clause default goes in *pdefault. */ | |
8650 | ||
8651 | static tree | |
8652 | c_parser_omp_all_clauses (c_parser *parser, unsigned int mask, | |
8653 | const char *where) | |
8654 | { | |
8655 | tree clauses = NULL; | |
8085ca15 | 8656 | bool first = true; |
953ff289 DN |
8657 | |
8658 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
8659 | { | |
8085ca15 JJ |
8660 | location_t here; |
8661 | pragma_omp_clause c_kind; | |
953ff289 DN |
8662 | const char *c_name; |
8663 | tree prev = clauses; | |
8664 | ||
8085ca15 JJ |
8665 | if (!first && c_parser_next_token_is (parser, CPP_COMMA)) |
8666 | c_parser_consume_token (parser); | |
8667 | ||
8668 | first = false; | |
8669 | here = c_parser_peek_token (parser)->location; | |
8670 | c_kind = c_parser_omp_clause_name (parser); | |
8671 | ||
953ff289 DN |
8672 | switch (c_kind) |
8673 | { | |
a68ab351 JJ |
8674 | case PRAGMA_OMP_CLAUSE_COLLAPSE: |
8675 | clauses = c_parser_omp_clause_collapse (parser, clauses); | |
8676 | c_name = "collapse"; | |
8677 | break; | |
953ff289 DN |
8678 | case PRAGMA_OMP_CLAUSE_COPYIN: |
8679 | clauses = c_parser_omp_clause_copyin (parser, clauses); | |
8680 | c_name = "copyin"; | |
8681 | break; | |
8682 | case PRAGMA_OMP_CLAUSE_COPYPRIVATE: | |
8683 | clauses = c_parser_omp_clause_copyprivate (parser, clauses); | |
8684 | c_name = "copyprivate"; | |
8685 | break; | |
8686 | case PRAGMA_OMP_CLAUSE_DEFAULT: | |
8687 | clauses = c_parser_omp_clause_default (parser, clauses); | |
8688 | c_name = "default"; | |
8689 | break; | |
8690 | case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE: | |
8691 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
8692 | c_name = "firstprivate"; | |
8693 | break; | |
8694 | case PRAGMA_OMP_CLAUSE_IF: | |
8695 | clauses = c_parser_omp_clause_if (parser, clauses); | |
8696 | c_name = "if"; | |
8697 | break; | |
8698 | case PRAGMA_OMP_CLAUSE_LASTPRIVATE: | |
8699 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
8700 | c_name = "lastprivate"; | |
8701 | break; | |
8702 | case PRAGMA_OMP_CLAUSE_NOWAIT: | |
8703 | clauses = c_parser_omp_clause_nowait (parser, clauses); | |
8704 | c_name = "nowait"; | |
8705 | break; | |
8706 | case PRAGMA_OMP_CLAUSE_NUM_THREADS: | |
8707 | clauses = c_parser_omp_clause_num_threads (parser, clauses); | |
8708 | c_name = "num_threads"; | |
8709 | break; | |
8710 | case PRAGMA_OMP_CLAUSE_ORDERED: | |
8711 | clauses = c_parser_omp_clause_ordered (parser, clauses); | |
8712 | c_name = "ordered"; | |
8713 | break; | |
8714 | case PRAGMA_OMP_CLAUSE_PRIVATE: | |
8715 | clauses = c_parser_omp_clause_private (parser, clauses); | |
8716 | c_name = "private"; | |
8717 | break; | |
8718 | case PRAGMA_OMP_CLAUSE_REDUCTION: | |
8719 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
8720 | c_name = "reduction"; | |
8721 | break; | |
8722 | case PRAGMA_OMP_CLAUSE_SCHEDULE: | |
8723 | clauses = c_parser_omp_clause_schedule (parser, clauses); | |
8724 | c_name = "schedule"; | |
8725 | break; | |
8726 | case PRAGMA_OMP_CLAUSE_SHARED: | |
8727 | clauses = c_parser_omp_clause_shared (parser, clauses); | |
8728 | c_name = "shared"; | |
8729 | break; | |
a68ab351 JJ |
8730 | case PRAGMA_OMP_CLAUSE_UNTIED: |
8731 | clauses = c_parser_omp_clause_untied (parser, clauses); | |
8732 | c_name = "untied"; | |
8733 | break; | |
953ff289 DN |
8734 | default: |
8735 | c_parser_error (parser, "expected %<#pragma omp%> clause"); | |
8736 | goto saw_error; | |
8737 | } | |
8738 | ||
8739 | if (((mask >> c_kind) & 1) == 0 && !parser->error) | |
8740 | { | |
8741 | /* Remove the invalid clause(s) from the list to avoid | |
8742 | confusing the rest of the compiler. */ | |
8743 | clauses = prev; | |
3ba09659 | 8744 | error_at (here, "%qs is not valid for %qs", c_name, where); |
953ff289 DN |
8745 | } |
8746 | } | |
8747 | ||
8748 | saw_error: | |
8749 | c_parser_skip_to_pragma_eol (parser); | |
8750 | ||
8751 | return c_finish_omp_clauses (clauses); | |
8752 | } | |
8753 | ||
8754 | /* OpenMP 2.5: | |
8755 | structured-block: | |
8756 | statement | |
8757 | ||
8758 | In practice, we're also interested in adding the statement to an | |
8759 | outer node. So it is convenient if we work around the fact that | |
8760 | c_parser_statement calls add_stmt. */ | |
8761 | ||
8762 | static tree | |
8763 | c_parser_omp_structured_block (c_parser *parser) | |
8764 | { | |
8765 | tree stmt = push_stmt_list (); | |
8766 | c_parser_statement (parser); | |
8767 | return pop_stmt_list (stmt); | |
8768 | } | |
8769 | ||
8770 | /* OpenMP 2.5: | |
8771 | # pragma omp atomic new-line | |
8772 | expression-stmt | |
8773 | ||
8774 | expression-stmt: | |
8775 | x binop= expr | x++ | ++x | x-- | --x | |
8776 | binop: | |
8777 | +, *, -, /, &, ^, |, <<, >> | |
8778 | ||
b8698a0f | 8779 | where x is an lvalue expression with scalar type. |
c2255bc4 AH |
8780 | |
8781 | LOC is the location of the #pragma token. */ | |
953ff289 DN |
8782 | |
8783 | static void | |
c2255bc4 | 8784 | c_parser_omp_atomic (location_t loc, c_parser *parser) |
953ff289 DN |
8785 | { |
8786 | tree lhs, rhs; | |
fe89d797 | 8787 | tree stmt; |
953ff289 | 8788 | enum tree_code code; |
79addd1f | 8789 | struct c_expr rhs_expr; |
953ff289 DN |
8790 | |
8791 | c_parser_skip_to_pragma_eol (parser); | |
8792 | ||
8793 | lhs = c_parser_unary_expression (parser).value; | |
928c19bb | 8794 | lhs = c_fully_fold (lhs, false, NULL); |
953ff289 DN |
8795 | switch (TREE_CODE (lhs)) |
8796 | { | |
8797 | case ERROR_MARK: | |
8798 | saw_error: | |
8799 | c_parser_skip_to_end_of_block_or_statement (parser); | |
8800 | return; | |
8801 | ||
8802 | case PREINCREMENT_EXPR: | |
8803 | case POSTINCREMENT_EXPR: | |
8804 | lhs = TREE_OPERAND (lhs, 0); | |
8805 | code = PLUS_EXPR; | |
8806 | rhs = integer_one_node; | |
8807 | break; | |
8808 | ||
8809 | case PREDECREMENT_EXPR: | |
8810 | case POSTDECREMENT_EXPR: | |
8811 | lhs = TREE_OPERAND (lhs, 0); | |
8812 | code = MINUS_EXPR; | |
8813 | rhs = integer_one_node; | |
8814 | break; | |
8815 | ||
f2b11865 JJ |
8816 | case COMPOUND_EXPR: |
8817 | if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR | |
8818 | && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR | |
8819 | && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR | |
8820 | && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0) | |
8821 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND | |
8822 | (TREE_OPERAND (lhs, 1), 0), 0))) | |
8823 | == BOOLEAN_TYPE) | |
8824 | /* Undo effects of boolean_increment for post {in,de}crement. */ | |
8825 | lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0); | |
8826 | /* FALLTHRU */ | |
8827 | case MODIFY_EXPR: | |
8828 | if (TREE_CODE (lhs) == MODIFY_EXPR | |
8829 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE) | |
8830 | { | |
8831 | /* Undo effects of boolean_increment. */ | |
8832 | if (integer_onep (TREE_OPERAND (lhs, 1))) | |
8833 | { | |
8834 | /* This is pre or post increment. */ | |
8835 | rhs = TREE_OPERAND (lhs, 1); | |
8836 | lhs = TREE_OPERAND (lhs, 0); | |
8837 | code = NOP_EXPR; | |
8838 | break; | |
8839 | } | |
8840 | if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR | |
8841 | && TREE_OPERAND (lhs, 0) | |
8842 | == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) | |
8843 | { | |
8844 | /* This is pre or post decrement. */ | |
8845 | rhs = TREE_OPERAND (lhs, 1); | |
8846 | lhs = TREE_OPERAND (lhs, 0); | |
8847 | code = NOP_EXPR; | |
8848 | break; | |
8849 | } | |
8850 | } | |
8851 | /* FALLTHRU */ | |
953ff289 DN |
8852 | default: |
8853 | switch (c_parser_peek_token (parser)->type) | |
8854 | { | |
8855 | case CPP_MULT_EQ: | |
8856 | code = MULT_EXPR; | |
8857 | break; | |
8858 | case CPP_DIV_EQ: | |
8859 | code = TRUNC_DIV_EXPR; | |
8860 | break; | |
8861 | case CPP_PLUS_EQ: | |
8862 | code = PLUS_EXPR; | |
8863 | break; | |
8864 | case CPP_MINUS_EQ: | |
8865 | code = MINUS_EXPR; | |
8866 | break; | |
8867 | case CPP_LSHIFT_EQ: | |
8868 | code = LSHIFT_EXPR; | |
8869 | break; | |
8870 | case CPP_RSHIFT_EQ: | |
8871 | code = RSHIFT_EXPR; | |
8872 | break; | |
8873 | case CPP_AND_EQ: | |
8874 | code = BIT_AND_EXPR; | |
8875 | break; | |
8876 | case CPP_OR_EQ: | |
8877 | code = BIT_IOR_EXPR; | |
8878 | break; | |
8879 | case CPP_XOR_EQ: | |
8880 | code = BIT_XOR_EXPR; | |
8881 | break; | |
8882 | default: | |
8883 | c_parser_error (parser, | |
8884 | "invalid operator for %<#pragma omp atomic%>"); | |
8885 | goto saw_error; | |
8886 | } | |
8887 | ||
8888 | c_parser_consume_token (parser); | |
c2255bc4 AH |
8889 | { |
8890 | location_t rhs_loc = c_parser_peek_token (parser)->location; | |
8891 | rhs_expr = c_parser_expression (parser); | |
ebfbbdc5 | 8892 | rhs_expr = default_function_array_read_conversion (rhs_loc, rhs_expr); |
c2255bc4 | 8893 | } |
79addd1f | 8894 | rhs = rhs_expr.value; |
928c19bb | 8895 | rhs = c_fully_fold (rhs, false, NULL); |
953ff289 DN |
8896 | break; |
8897 | } | |
c2255bc4 | 8898 | stmt = c_finish_omp_atomic (loc, code, lhs, rhs); |
fe89d797 MM |
8899 | if (stmt != error_mark_node) |
8900 | add_stmt (stmt); | |
953ff289 DN |
8901 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
8902 | } | |
8903 | ||
8904 | ||
8905 | /* OpenMP 2.5: | |
8906 | # pragma omp barrier new-line | |
8907 | */ | |
8908 | ||
8909 | static void | |
8910 | c_parser_omp_barrier (c_parser *parser) | |
8911 | { | |
c2255bc4 | 8912 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8913 | c_parser_consume_pragma (parser); |
8914 | c_parser_skip_to_pragma_eol (parser); | |
8915 | ||
c2255bc4 | 8916 | c_finish_omp_barrier (loc); |
953ff289 DN |
8917 | } |
8918 | ||
8919 | /* OpenMP 2.5: | |
8920 | # pragma omp critical [(name)] new-line | |
8921 | structured-block | |
c2255bc4 AH |
8922 | |
8923 | LOC is the location of the #pragma itself. */ | |
953ff289 DN |
8924 | |
8925 | static tree | |
c2255bc4 | 8926 | c_parser_omp_critical (location_t loc, c_parser *parser) |
953ff289 DN |
8927 | { |
8928 | tree stmt, name = NULL; | |
8929 | ||
8930 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8931 | { | |
8932 | c_parser_consume_token (parser); | |
8933 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
8934 | { | |
8935 | name = c_parser_peek_token (parser)->value; | |
8936 | c_parser_consume_token (parser); | |
8937 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8938 | } | |
8939 | else | |
8940 | c_parser_error (parser, "expected identifier"); | |
8941 | } | |
8942 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
8943 | c_parser_error (parser, "expected %<(%> or end of line"); | |
8944 | c_parser_skip_to_pragma_eol (parser); | |
8945 | ||
8946 | stmt = c_parser_omp_structured_block (parser); | |
c2255bc4 | 8947 | return c_finish_omp_critical (loc, stmt, name); |
953ff289 DN |
8948 | } |
8949 | ||
8950 | /* OpenMP 2.5: | |
8951 | # pragma omp flush flush-vars[opt] new-line | |
8952 | ||
8953 | flush-vars: | |
8954 | ( variable-list ) */ | |
8955 | ||
8956 | static void | |
8957 | c_parser_omp_flush (c_parser *parser) | |
8958 | { | |
c2255bc4 | 8959 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8960 | c_parser_consume_pragma (parser); |
8961 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
d75d71e0 | 8962 | c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 DN |
8963 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) |
8964 | c_parser_error (parser, "expected %<(%> or end of line"); | |
8965 | c_parser_skip_to_pragma_eol (parser); | |
8966 | ||
c2255bc4 | 8967 | c_finish_omp_flush (loc); |
953ff289 DN |
8968 | } |
8969 | ||
fa10beec | 8970 | /* Parse the restricted form of the for statement allowed by OpenMP. |
953ff289 | 8971 | The real trick here is to determine the loop control variable early |
c2255bc4 AH |
8972 | so that we can push a new decl if necessary to make it private. |
8973 | LOC is the location of the OMP in "#pragma omp". */ | |
953ff289 DN |
8974 | |
8975 | static tree | |
c2255bc4 AH |
8976 | c_parser_omp_for_loop (location_t loc, |
8977 | c_parser *parser, tree clauses, tree *par_clauses) | |
953ff289 | 8978 | { |
a68ab351 | 8979 | tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl; |
1d468b06 | 8980 | tree declv, condv, incrv, initv, ret = NULL; |
a68ab351 JJ |
8981 | bool fail = false, open_brace_parsed = false; |
8982 | int i, collapse = 1, nbraces = 0; | |
c2255bc4 | 8983 | location_t for_loc; |
1d468b06 | 8984 | VEC(tree,gc) *for_block = make_tree_vector (); |
a68ab351 JJ |
8985 | |
8986 | for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl)) | |
8987 | if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE) | |
8988 | collapse = tree_low_cst (OMP_CLAUSE_COLLAPSE_EXPR (cl), 0); | |
8989 | ||
8990 | gcc_assert (collapse >= 1); | |
8991 | ||
8992 | declv = make_tree_vec (collapse); | |
8993 | initv = make_tree_vec (collapse); | |
8994 | condv = make_tree_vec (collapse); | |
8995 | incrv = make_tree_vec (collapse); | |
953ff289 DN |
8996 | |
8997 | if (!c_parser_next_token_is_keyword (parser, RID_FOR)) | |
8998 | { | |
8999 | c_parser_error (parser, "for statement expected"); | |
9000 | return NULL; | |
9001 | } | |
c2255bc4 | 9002 | for_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9003 | c_parser_consume_token (parser); |
9004 | ||
a68ab351 | 9005 | for (i = 0; i < collapse; i++) |
953ff289 | 9006 | { |
a68ab351 | 9007 | int bracecount = 0; |
953ff289 | 9008 | |
a68ab351 JJ |
9009 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9010 | goto pop_scopes; | |
953ff289 | 9011 | |
a68ab351 | 9012 | /* Parse the initialization declaration or expression. */ |
32912286 | 9013 | if (c_parser_next_token_starts_declaration (parser)) |
a68ab351 JJ |
9014 | { |
9015 | if (i > 0) | |
1d468b06 | 9016 | VEC_safe_push (tree, gc, for_block, c_begin_compound_stmt (true)); |
f05b9d93 NP |
9017 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
9018 | decl = check_for_loop_decls (for_loc, flag_isoc99); | |
a68ab351 JJ |
9019 | if (decl == NULL) |
9020 | goto error_init; | |
9021 | if (DECL_INITIAL (decl) == error_mark_node) | |
9022 | decl = error_mark_node; | |
9023 | init = decl; | |
9024 | } | |
9025 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
9026 | && c_parser_peek_2nd_token (parser)->type == CPP_EQ) | |
9027 | { | |
32e8bb8e | 9028 | struct c_expr decl_exp; |
a68ab351 | 9029 | struct c_expr init_exp; |
c9f9eb5d | 9030 | location_t init_loc; |
a68ab351 | 9031 | |
32e8bb8e ILT |
9032 | decl_exp = c_parser_postfix_expression (parser); |
9033 | decl = decl_exp.value; | |
a68ab351 JJ |
9034 | |
9035 | c_parser_require (parser, CPP_EQ, "expected %<=%>"); | |
9036 | ||
c2255bc4 | 9037 | init_loc = c_parser_peek_token (parser)->location; |
a68ab351 | 9038 | init_exp = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
9039 | init_exp = default_function_array_read_conversion (init_loc, |
9040 | init_exp); | |
32e8bb8e | 9041 | init = build_modify_expr (init_loc, decl, decl_exp.original_type, |
c2255bc4 | 9042 | NOP_EXPR, init_loc, init_exp.value, |
bbbbb16a | 9043 | init_exp.original_type); |
c2255bc4 | 9044 | init = c_process_expr_stmt (init_loc, init); |
953ff289 | 9045 | |
a68ab351 JJ |
9046 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
9047 | } | |
9048 | else | |
9049 | { | |
9050 | error_init: | |
9051 | c_parser_error (parser, | |
9052 | "expected iteration declaration or initialization"); | |
9053 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
9054 | "expected %<)%>"); | |
9055 | fail = true; | |
9056 | goto parse_next; | |
9057 | } | |
9058 | ||
9059 | /* Parse the loop condition. */ | |
9060 | cond = NULL_TREE; | |
9061 | if (c_parser_next_token_is_not (parser, CPP_SEMICOLON)) | |
9062 | { | |
3ba09659 | 9063 | location_t cond_loc = c_parser_peek_token (parser)->location; |
c5cdb03f | 9064 | struct c_expr cond_expr = c_parser_binary_expression (parser, NULL); |
3ba09659 | 9065 | |
c5cdb03f | 9066 | cond = cond_expr.value; |
3ba09659 | 9067 | cond = c_objc_common_truthvalue_conversion (cond_loc, cond); |
928c19bb | 9068 | cond = c_fully_fold (cond, false, NULL); |
c5cdb03f JJ |
9069 | switch (cond_expr.original_code) |
9070 | { | |
9071 | case GT_EXPR: | |
9072 | case GE_EXPR: | |
9073 | case LT_EXPR: | |
9074 | case LE_EXPR: | |
9075 | break; | |
9076 | default: | |
9077 | /* Can't be cond = error_mark_node, because we want to preserve | |
9078 | the location until c_finish_omp_for. */ | |
9079 | cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node); | |
9080 | break; | |
9081 | } | |
c9f9eb5d | 9082 | protected_set_expr_location (cond, cond_loc); |
a68ab351 | 9083 | } |
953ff289 | 9084 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
953ff289 | 9085 | |
a68ab351 JJ |
9086 | /* Parse the increment expression. */ |
9087 | incr = NULL_TREE; | |
9088 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN)) | |
c9f9eb5d AH |
9089 | { |
9090 | location_t incr_loc = c_parser_peek_token (parser)->location; | |
9091 | ||
c2255bc4 AH |
9092 | incr = c_process_expr_stmt (incr_loc, |
9093 | c_parser_expression (parser).value); | |
c9f9eb5d | 9094 | } |
a68ab351 | 9095 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
953ff289 | 9096 | |
a68ab351 JJ |
9097 | if (decl == NULL || decl == error_mark_node || init == error_mark_node) |
9098 | fail = true; | |
9099 | else | |
9100 | { | |
9101 | TREE_VEC_ELT (declv, i) = decl; | |
9102 | TREE_VEC_ELT (initv, i) = init; | |
9103 | TREE_VEC_ELT (condv, i) = cond; | |
9104 | TREE_VEC_ELT (incrv, i) = incr; | |
9105 | } | |
9106 | ||
9107 | parse_next: | |
9108 | if (i == collapse - 1) | |
9109 | break; | |
9110 | ||
9111 | /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed | |
9112 | in between the collapsed for loops to be still considered perfectly | |
9113 | nested. Hopefully the final version clarifies this. | |
9114 | For now handle (multiple) {'s and empty statements. */ | |
9115 | do | |
9116 | { | |
9117 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
9118 | { | |
9119 | c_parser_consume_token (parser); | |
9120 | break; | |
9121 | } | |
9122 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
9123 | { | |
9124 | c_parser_consume_token (parser); | |
9125 | bracecount++; | |
9126 | } | |
9127 | else if (bracecount | |
9128 | && c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
9129 | c_parser_consume_token (parser); | |
9130 | else | |
9131 | { | |
9132 | c_parser_error (parser, "not enough perfectly nested loops"); | |
9133 | if (bracecount) | |
9134 | { | |
9135 | open_brace_parsed = true; | |
9136 | bracecount--; | |
9137 | } | |
9138 | fail = true; | |
9139 | collapse = 0; | |
9140 | break; | |
9141 | } | |
9142 | } | |
9143 | while (1); | |
9144 | ||
9145 | nbraces += bracecount; | |
9146 | } | |
953ff289 | 9147 | |
953ff289 DN |
9148 | save_break = c_break_label; |
9149 | c_break_label = size_one_node; | |
9150 | save_cont = c_cont_label; | |
9151 | c_cont_label = NULL_TREE; | |
9152 | body = push_stmt_list (); | |
9153 | ||
a68ab351 JJ |
9154 | if (open_brace_parsed) |
9155 | { | |
c2255bc4 | 9156 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
9157 | stmt = c_begin_compound_stmt (true); |
9158 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 9159 | add_stmt (c_end_compound_stmt (here, stmt, true)); |
a68ab351 JJ |
9160 | } |
9161 | else | |
9162 | add_stmt (c_parser_c99_block_statement (parser)); | |
953ff289 | 9163 | if (c_cont_label) |
c2255bc4 AH |
9164 | { |
9165 | tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label); | |
9166 | SET_EXPR_LOCATION (t, loc); | |
9167 | add_stmt (t); | |
9168 | } | |
953ff289 DN |
9169 | |
9170 | body = pop_stmt_list (body); | |
9171 | c_break_label = save_break; | |
9172 | c_cont_label = save_cont; | |
9173 | ||
a68ab351 JJ |
9174 | while (nbraces) |
9175 | { | |
9176 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9177 | { | |
9178 | c_parser_consume_token (parser); | |
9179 | nbraces--; | |
9180 | } | |
9181 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
9182 | c_parser_consume_token (parser); | |
9183 | else | |
9184 | { | |
9185 | c_parser_error (parser, "collapsed loops not perfectly nested"); | |
9186 | while (nbraces) | |
9187 | { | |
c2255bc4 | 9188 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
9189 | stmt = c_begin_compound_stmt (true); |
9190 | add_stmt (body); | |
9191 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 9192 | body = c_end_compound_stmt (here, stmt, true); |
a68ab351 JJ |
9193 | nbraces--; |
9194 | } | |
9195 | goto pop_scopes; | |
9196 | } | |
9197 | } | |
9198 | ||
61c3a446 | 9199 | /* Only bother calling c_finish_omp_for if we haven't already generated |
953ff289 | 9200 | an error from the initialization parsing. */ |
a68ab351 JJ |
9201 | if (!fail) |
9202 | { | |
9203 | stmt = c_finish_omp_for (loc, declv, initv, condv, incrv, body, NULL); | |
9204 | if (stmt) | |
9205 | { | |
9206 | if (par_clauses != NULL) | |
9207 | { | |
9208 | tree *c; | |
9209 | for (c = par_clauses; *c ; ) | |
9210 | if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE | |
9211 | && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE) | |
9212 | c = &OMP_CLAUSE_CHAIN (*c); | |
9213 | else | |
9214 | { | |
9215 | for (i = 0; i < collapse; i++) | |
9216 | if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c)) | |
9217 | break; | |
9218 | if (i == collapse) | |
9219 | c = &OMP_CLAUSE_CHAIN (*c); | |
9220 | else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE) | |
9221 | { | |
3ba09659 AH |
9222 | error_at (loc, |
9223 | "iteration variable %qD should not be firstprivate", | |
9224 | OMP_CLAUSE_DECL (*c)); | |
a68ab351 JJ |
9225 | *c = OMP_CLAUSE_CHAIN (*c); |
9226 | } | |
9227 | else | |
9228 | { | |
9229 | /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES, | |
9230 | change it to shared (decl) in | |
9231 | OMP_PARALLEL_CLAUSES. */ | |
c2255bc4 AH |
9232 | tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c), |
9233 | OMP_CLAUSE_LASTPRIVATE); | |
a68ab351 JJ |
9234 | OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c); |
9235 | OMP_CLAUSE_CHAIN (l) = clauses; | |
9236 | clauses = l; | |
9237 | OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED); | |
9238 | } | |
9239 | } | |
9240 | } | |
9241 | OMP_FOR_CLAUSES (stmt) = clauses; | |
9242 | } | |
9243 | ret = stmt; | |
9244 | } | |
9245 | pop_scopes: | |
1d468b06 | 9246 | while (!VEC_empty (tree, for_block)) |
a68ab351 | 9247 | { |
c2255bc4 AH |
9248 | /* FIXME diagnostics: LOC below should be the actual location of |
9249 | this particular for block. We need to build a list of | |
9250 | locations to go along with FOR_BLOCK. */ | |
1d468b06 | 9251 | stmt = c_end_compound_stmt (loc, VEC_pop (tree, for_block), true); |
a68ab351 | 9252 | add_stmt (stmt); |
a68ab351 | 9253 | } |
1d468b06 | 9254 | release_tree_vector (for_block); |
a68ab351 | 9255 | return ret; |
953ff289 DN |
9256 | } |
9257 | ||
9258 | /* OpenMP 2.5: | |
9259 | #pragma omp for for-clause[optseq] new-line | |
9260 | for-loop | |
c2255bc4 AH |
9261 | |
9262 | LOC is the location of the #pragma token. | |
953ff289 DN |
9263 | */ |
9264 | ||
9265 | #define OMP_FOR_CLAUSE_MASK \ | |
9266 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
9267 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
9268 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
9269 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
9270 | | (1u << PRAGMA_OMP_CLAUSE_ORDERED) \ | |
9271 | | (1u << PRAGMA_OMP_CLAUSE_SCHEDULE) \ | |
a68ab351 | 9272 | | (1u << PRAGMA_OMP_CLAUSE_COLLAPSE) \ |
953ff289 DN |
9273 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) |
9274 | ||
9275 | static tree | |
c2255bc4 | 9276 | c_parser_omp_for (location_t loc, c_parser *parser) |
953ff289 DN |
9277 | { |
9278 | tree block, clauses, ret; | |
9279 | ||
9280 | clauses = c_parser_omp_all_clauses (parser, OMP_FOR_CLAUSE_MASK, | |
9281 | "#pragma omp for"); | |
9282 | ||
9283 | block = c_begin_compound_stmt (true); | |
c2255bc4 AH |
9284 | ret = c_parser_omp_for_loop (loc, parser, clauses, NULL); |
9285 | block = c_end_compound_stmt (loc, block, true); | |
953ff289 DN |
9286 | add_stmt (block); |
9287 | ||
9288 | return ret; | |
9289 | } | |
9290 | ||
9291 | /* OpenMP 2.5: | |
9292 | # pragma omp master new-line | |
9293 | structured-block | |
c2255bc4 AH |
9294 | |
9295 | LOC is the location of the #pragma token. | |
953ff289 DN |
9296 | */ |
9297 | ||
9298 | static tree | |
c2255bc4 | 9299 | c_parser_omp_master (location_t loc, c_parser *parser) |
953ff289 DN |
9300 | { |
9301 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 9302 | return c_finish_omp_master (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
9303 | } |
9304 | ||
9305 | /* OpenMP 2.5: | |
9306 | # pragma omp ordered new-line | |
9307 | structured-block | |
c2255bc4 AH |
9308 | |
9309 | LOC is the location of the #pragma itself. | |
953ff289 DN |
9310 | */ |
9311 | ||
9312 | static tree | |
c2255bc4 | 9313 | c_parser_omp_ordered (location_t loc, c_parser *parser) |
953ff289 DN |
9314 | { |
9315 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 9316 | return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
9317 | } |
9318 | ||
9319 | /* OpenMP 2.5: | |
9320 | ||
9321 | section-scope: | |
9322 | { section-sequence } | |
9323 | ||
9324 | section-sequence: | |
9325 | section-directive[opt] structured-block | |
b8698a0f | 9326 | section-sequence section-directive structured-block |
c2255bc4 AH |
9327 | |
9328 | SECTIONS_LOC is the location of the #pragma omp sections. */ | |
953ff289 DN |
9329 | |
9330 | static tree | |
c2255bc4 | 9331 | c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser) |
953ff289 DN |
9332 | { |
9333 | tree stmt, substmt; | |
9334 | bool error_suppress = false; | |
9335 | location_t loc; | |
9336 | ||
c2255bc4 | 9337 | loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9338 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
9339 | { | |
9340 | /* Avoid skipping until the end of the block. */ | |
9341 | parser->error = false; | |
9342 | return NULL_TREE; | |
9343 | } | |
9344 | ||
9345 | stmt = push_stmt_list (); | |
9346 | ||
953ff289 DN |
9347 | if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION) |
9348 | { | |
9349 | substmt = push_stmt_list (); | |
9350 | ||
9351 | while (1) | |
9352 | { | |
9353 | c_parser_statement (parser); | |
9354 | ||
9355 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
9356 | break; | |
9357 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9358 | break; | |
9359 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
9360 | break; | |
9361 | } | |
9362 | ||
9363 | substmt = pop_stmt_list (substmt); | |
9364 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
9365 | SET_EXPR_LOCATION (substmt, loc); | |
9366 | add_stmt (substmt); | |
9367 | } | |
9368 | ||
9369 | while (1) | |
9370 | { | |
9371 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9372 | break; | |
9373 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
9374 | break; | |
9375 | ||
9376 | loc = c_parser_peek_token (parser)->location; | |
9377 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
9378 | { | |
9379 | c_parser_consume_pragma (parser); | |
9380 | c_parser_skip_to_pragma_eol (parser); | |
9381 | error_suppress = false; | |
9382 | } | |
9383 | else if (!error_suppress) | |
9384 | { | |
3ba09659 | 9385 | error_at (loc, "expected %<#pragma omp section%> or %<}%>"); |
953ff289 DN |
9386 | error_suppress = true; |
9387 | } | |
9388 | ||
9389 | substmt = c_parser_omp_structured_block (parser); | |
9390 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
9391 | SET_EXPR_LOCATION (substmt, loc); | |
9392 | add_stmt (substmt); | |
9393 | } | |
9394 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, | |
9395 | "expected %<#pragma omp section%> or %<}%>"); | |
9396 | ||
9397 | substmt = pop_stmt_list (stmt); | |
9398 | ||
9399 | stmt = make_node (OMP_SECTIONS); | |
c2255bc4 | 9400 | SET_EXPR_LOCATION (stmt, sections_loc); |
953ff289 DN |
9401 | TREE_TYPE (stmt) = void_type_node; |
9402 | OMP_SECTIONS_BODY (stmt) = substmt; | |
9403 | ||
9404 | return add_stmt (stmt); | |
9405 | } | |
9406 | ||
9407 | /* OpenMP 2.5: | |
9408 | # pragma omp sections sections-clause[optseq] newline | |
9409 | sections-scope | |
c2255bc4 AH |
9410 | |
9411 | LOC is the location of the #pragma token. | |
953ff289 DN |
9412 | */ |
9413 | ||
9414 | #define OMP_SECTIONS_CLAUSE_MASK \ | |
9415 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
9416 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
9417 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
9418 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
9419 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
9420 | ||
9421 | static tree | |
c2255bc4 | 9422 | c_parser_omp_sections (location_t loc, c_parser *parser) |
953ff289 DN |
9423 | { |
9424 | tree block, clauses, ret; | |
9425 | ||
9426 | clauses = c_parser_omp_all_clauses (parser, OMP_SECTIONS_CLAUSE_MASK, | |
9427 | "#pragma omp sections"); | |
9428 | ||
9429 | block = c_begin_compound_stmt (true); | |
c2255bc4 | 9430 | ret = c_parser_omp_sections_scope (loc, parser); |
953ff289 DN |
9431 | if (ret) |
9432 | OMP_SECTIONS_CLAUSES (ret) = clauses; | |
c2255bc4 | 9433 | block = c_end_compound_stmt (loc, block, true); |
953ff289 DN |
9434 | add_stmt (block); |
9435 | ||
9436 | return ret; | |
9437 | } | |
9438 | ||
9439 | /* OpenMP 2.5: | |
9440 | # pragma parallel parallel-clause new-line | |
9441 | # pragma parallel for parallel-for-clause new-line | |
9442 | # pragma parallel sections parallel-sections-clause new-line | |
c2255bc4 AH |
9443 | |
9444 | LOC is the location of the #pragma token. | |
953ff289 DN |
9445 | */ |
9446 | ||
9447 | #define OMP_PARALLEL_CLAUSE_MASK \ | |
9448 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
9449 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
9450 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
9451 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
9452 | | (1u << PRAGMA_OMP_CLAUSE_SHARED) \ | |
9453 | | (1u << PRAGMA_OMP_CLAUSE_COPYIN) \ | |
9454 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
9455 | | (1u << PRAGMA_OMP_CLAUSE_NUM_THREADS)) | |
9456 | ||
9457 | static tree | |
c2255bc4 | 9458 | c_parser_omp_parallel (location_t loc, c_parser *parser) |
953ff289 DN |
9459 | { |
9460 | enum pragma_kind p_kind = PRAGMA_OMP_PARALLEL; | |
9461 | const char *p_name = "#pragma omp parallel"; | |
9462 | tree stmt, clauses, par_clause, ws_clause, block; | |
9463 | unsigned int mask = OMP_PARALLEL_CLAUSE_MASK; | |
9464 | ||
9465 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
9466 | { | |
9467 | c_parser_consume_token (parser); | |
9468 | p_kind = PRAGMA_OMP_PARALLEL_FOR; | |
9469 | p_name = "#pragma omp parallel for"; | |
9470 | mask |= OMP_FOR_CLAUSE_MASK; | |
9471 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
9472 | } | |
9473 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
9474 | { | |
9475 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9476 | if (strcmp (p, "sections") == 0) | |
9477 | { | |
9478 | c_parser_consume_token (parser); | |
9479 | p_kind = PRAGMA_OMP_PARALLEL_SECTIONS; | |
9480 | p_name = "#pragma omp parallel sections"; | |
9481 | mask |= OMP_SECTIONS_CLAUSE_MASK; | |
9482 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
9483 | } | |
9484 | } | |
9485 | ||
9486 | clauses = c_parser_omp_all_clauses (parser, mask, p_name); | |
9487 | ||
9488 | switch (p_kind) | |
9489 | { | |
9490 | case PRAGMA_OMP_PARALLEL: | |
9491 | block = c_begin_omp_parallel (); | |
9492 | c_parser_statement (parser); | |
c2255bc4 | 9493 | stmt = c_finish_omp_parallel (loc, clauses, block); |
953ff289 DN |
9494 | break; |
9495 | ||
9496 | case PRAGMA_OMP_PARALLEL_FOR: | |
9497 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
9498 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
9499 | c_parser_omp_for_loop (loc, parser, ws_clause, &par_clause); | |
9500 | stmt = c_finish_omp_parallel (loc, par_clause, block); | |
761041be | 9501 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
9502 | break; |
9503 | ||
9504 | case PRAGMA_OMP_PARALLEL_SECTIONS: | |
9505 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
9506 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
9507 | stmt = c_parser_omp_sections_scope (loc, parser); | |
953ff289 DN |
9508 | if (stmt) |
9509 | OMP_SECTIONS_CLAUSES (stmt) = ws_clause; | |
c2255bc4 | 9510 | stmt = c_finish_omp_parallel (loc, par_clause, block); |
761041be | 9511 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
9512 | break; |
9513 | ||
9514 | default: | |
9515 | gcc_unreachable (); | |
9516 | } | |
9517 | ||
9518 | return stmt; | |
9519 | } | |
9520 | ||
9521 | /* OpenMP 2.5: | |
9522 | # pragma omp single single-clause[optseq] new-line | |
9523 | structured-block | |
c2255bc4 AH |
9524 | |
9525 | LOC is the location of the #pragma. | |
953ff289 DN |
9526 | */ |
9527 | ||
9528 | #define OMP_SINGLE_CLAUSE_MASK \ | |
9529 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
9530 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
9531 | | (1u << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \ | |
9532 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
9533 | ||
9534 | static tree | |
c2255bc4 | 9535 | c_parser_omp_single (location_t loc, c_parser *parser) |
953ff289 DN |
9536 | { |
9537 | tree stmt = make_node (OMP_SINGLE); | |
c2255bc4 | 9538 | SET_EXPR_LOCATION (stmt, loc); |
953ff289 DN |
9539 | TREE_TYPE (stmt) = void_type_node; |
9540 | ||
9541 | OMP_SINGLE_CLAUSES (stmt) | |
9542 | = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK, | |
9543 | "#pragma omp single"); | |
9544 | OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser); | |
9545 | ||
9546 | return add_stmt (stmt); | |
9547 | } | |
9548 | ||
a68ab351 JJ |
9549 | /* OpenMP 3.0: |
9550 | # pragma omp task task-clause[optseq] new-line | |
c2255bc4 AH |
9551 | |
9552 | LOC is the location of the #pragma. | |
a68ab351 JJ |
9553 | */ |
9554 | ||
9555 | #define OMP_TASK_CLAUSE_MASK \ | |
9556 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
9557 | | (1u << PRAGMA_OMP_CLAUSE_UNTIED) \ | |
9558 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
9559 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
9560 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
9561 | | (1u << PRAGMA_OMP_CLAUSE_SHARED)) | |
9562 | ||
9563 | static tree | |
c2255bc4 | 9564 | c_parser_omp_task (location_t loc, c_parser *parser) |
a68ab351 JJ |
9565 | { |
9566 | tree clauses, block; | |
9567 | ||
9568 | clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK, | |
9569 | "#pragma omp task"); | |
9570 | ||
9571 | block = c_begin_omp_task (); | |
9572 | c_parser_statement (parser); | |
c2255bc4 | 9573 | return c_finish_omp_task (loc, clauses, block); |
a68ab351 JJ |
9574 | } |
9575 | ||
9576 | /* OpenMP 3.0: | |
9577 | # pragma omp taskwait new-line | |
9578 | */ | |
9579 | ||
9580 | static void | |
9581 | c_parser_omp_taskwait (c_parser *parser) | |
9582 | { | |
c2255bc4 | 9583 | location_t loc = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
9584 | c_parser_consume_pragma (parser); |
9585 | c_parser_skip_to_pragma_eol (parser); | |
9586 | ||
c2255bc4 | 9587 | c_finish_omp_taskwait (loc); |
a68ab351 | 9588 | } |
953ff289 DN |
9589 | |
9590 | /* Main entry point to parsing most OpenMP pragmas. */ | |
9591 | ||
9592 | static void | |
9593 | c_parser_omp_construct (c_parser *parser) | |
9594 | { | |
9595 | enum pragma_kind p_kind; | |
9596 | location_t loc; | |
9597 | tree stmt; | |
9598 | ||
9599 | loc = c_parser_peek_token (parser)->location; | |
9600 | p_kind = c_parser_peek_token (parser)->pragma_kind; | |
9601 | c_parser_consume_pragma (parser); | |
9602 | ||
9603 | switch (p_kind) | |
9604 | { | |
9605 | case PRAGMA_OMP_ATOMIC: | |
c2255bc4 | 9606 | c_parser_omp_atomic (loc, parser); |
953ff289 DN |
9607 | return; |
9608 | case PRAGMA_OMP_CRITICAL: | |
c2255bc4 | 9609 | stmt = c_parser_omp_critical (loc, parser); |
953ff289 DN |
9610 | break; |
9611 | case PRAGMA_OMP_FOR: | |
c2255bc4 | 9612 | stmt = c_parser_omp_for (loc, parser); |
953ff289 DN |
9613 | break; |
9614 | case PRAGMA_OMP_MASTER: | |
c2255bc4 | 9615 | stmt = c_parser_omp_master (loc, parser); |
953ff289 DN |
9616 | break; |
9617 | case PRAGMA_OMP_ORDERED: | |
c2255bc4 | 9618 | stmt = c_parser_omp_ordered (loc, parser); |
953ff289 DN |
9619 | break; |
9620 | case PRAGMA_OMP_PARALLEL: | |
c2255bc4 | 9621 | stmt = c_parser_omp_parallel (loc, parser); |
953ff289 DN |
9622 | break; |
9623 | case PRAGMA_OMP_SECTIONS: | |
c2255bc4 | 9624 | stmt = c_parser_omp_sections (loc, parser); |
953ff289 DN |
9625 | break; |
9626 | case PRAGMA_OMP_SINGLE: | |
c2255bc4 | 9627 | stmt = c_parser_omp_single (loc, parser); |
953ff289 | 9628 | break; |
a68ab351 | 9629 | case PRAGMA_OMP_TASK: |
c2255bc4 | 9630 | stmt = c_parser_omp_task (loc, parser); |
a68ab351 | 9631 | break; |
953ff289 DN |
9632 | default: |
9633 | gcc_unreachable (); | |
9634 | } | |
9635 | ||
9636 | if (stmt) | |
c2255bc4 | 9637 | gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION); |
953ff289 DN |
9638 | } |
9639 | ||
9640 | ||
9641 | /* OpenMP 2.5: | |
9642 | # pragma omp threadprivate (variable-list) */ | |
9643 | ||
9644 | static void | |
9645 | c_parser_omp_threadprivate (c_parser *parser) | |
9646 | { | |
9647 | tree vars, t; | |
c2255bc4 | 9648 | location_t loc; |
953ff289 DN |
9649 | |
9650 | c_parser_consume_pragma (parser); | |
c2255bc4 | 9651 | loc = c_parser_peek_token (parser)->location; |
d75d71e0 | 9652 | vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 | 9653 | |
953ff289 DN |
9654 | /* Mark every variable in VARS to be assigned thread local storage. */ |
9655 | for (t = vars; t; t = TREE_CHAIN (t)) | |
9656 | { | |
9657 | tree v = TREE_PURPOSE (t); | |
9658 | ||
c2255bc4 AH |
9659 | /* FIXME diagnostics: Ideally we should keep individual |
9660 | locations for all the variables in the var list to make the | |
9661 | following errors more precise. Perhaps | |
9662 | c_parser_omp_var_list_parens() should construct a list of | |
9663 | locations to go along with the var list. */ | |
9664 | ||
953ff289 DN |
9665 | /* If V had already been marked threadprivate, it doesn't matter |
9666 | whether it had been used prior to this point. */ | |
5df27e4a | 9667 | if (TREE_CODE (v) != VAR_DECL) |
c2255bc4 | 9668 | error_at (loc, "%qD is not a variable", v); |
5df27e4a | 9669 | else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v)) |
c2255bc4 | 9670 | error_at (loc, "%qE declared %<threadprivate%> after first use", v); |
953ff289 | 9671 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) |
c2255bc4 | 9672 | error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v); |
5df27e4a JJ |
9673 | else if (TREE_TYPE (v) == error_mark_node) |
9674 | ; | |
953ff289 | 9675 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) |
c2255bc4 | 9676 | error_at (loc, "%<threadprivate%> %qE has incomplete type", v); |
953ff289 DN |
9677 | else |
9678 | { | |
9679 | if (! DECL_THREAD_LOCAL_P (v)) | |
9680 | { | |
9681 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
9682 | /* If rtl has been already set for this var, call | |
9683 | make_decl_rtl once again, so that encode_section_info | |
9684 | has a chance to look at the new decl flags. */ | |
9685 | if (DECL_RTL_SET_P (v)) | |
9686 | make_decl_rtl (v); | |
9687 | } | |
9688 | C_DECL_THREADPRIVATE_P (v) = 1; | |
9689 | } | |
9690 | } | |
9691 | ||
9692 | c_parser_skip_to_pragma_eol (parser); | |
9693 | } | |
9694 | ||
bc4071dd | 9695 | \f |
27bf414c JM |
9696 | /* Parse a single source file. */ |
9697 | ||
9698 | void | |
9699 | c_parse_file (void) | |
9700 | { | |
bc4071dd RH |
9701 | /* Use local storage to begin. If the first token is a pragma, parse it. |
9702 | If it is #pragma GCC pch_preprocess, then this will load a PCH file | |
9703 | which will cause garbage collection. */ | |
9704 | c_parser tparser; | |
9705 | ||
9706 | memset (&tparser, 0, sizeof tparser); | |
9707 | the_parser = &tparser; | |
9708 | ||
9709 | if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS) | |
9710 | c_parser_pragma_pch_preprocess (&tparser); | |
9711 | ||
a9429e29 | 9712 | the_parser = ggc_alloc_c_parser (); |
bc4071dd RH |
9713 | *the_parser = tparser; |
9714 | ||
f9417da1 RG |
9715 | /* Initialize EH, if we've been told to do so. */ |
9716 | if (flag_exceptions) | |
1d65f45c | 9717 | using_eh_for_cleanups (); |
f9417da1 | 9718 | |
27bf414c JM |
9719 | c_parser_translation_unit (the_parser); |
9720 | the_parser = NULL; | |
9721 | } | |
9722 | ||
9723 | #include "gt-c-parser.h" |