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27bf414c | 1 | /* Parser for C and Objective-C. |
d1e082c2 | 2 | Copyright (C) 1987-2013 Free Software Foundation, Inc. |
27bf414c JM |
3 | |
4 | Parser actions based on the old Bison parser; structure somewhat | |
5 | influenced by and fragments based on the C++ parser. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 11 | Software Foundation; either version 3, or (at your option) any later |
27bf414c JM |
12 | version. |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
27bf414c JM |
22 | |
23 | /* TODO: | |
24 | ||
25 | Make sure all relevant comments, and all relevant code from all | |
26 | actions, brought over from old parser. Verify exact correspondence | |
27 | of syntax accepted. | |
28 | ||
29 | Add testcases covering every input symbol in every state in old and | |
30 | new parsers. | |
31 | ||
32 | Include full syntax for GNU C, including erroneous cases accepted | |
33 | with error messages, in syntax productions in comments. | |
34 | ||
35 | Make more diagnostics in the front end generally take an explicit | |
36 | location rather than implicitly using input_location. */ | |
37 | ||
38 | #include "config.h" | |
39 | #include "system.h" | |
40 | #include "coretypes.h" | |
f4ce02c5 | 41 | #include "tm.h" /* For rtl.h: needs enum reg_class. */ |
27bf414c JM |
42 | #include "tree.h" |
43 | #include "langhooks.h" | |
44 | #include "input.h" | |
45 | #include "cpplib.h" | |
46 | #include "timevar.h" | |
39dabefd | 47 | #include "c-family/c-pragma.h" |
27bf414c JM |
48 | #include "c-tree.h" |
49 | #include "flags.h" | |
27bf414c | 50 | #include "ggc.h" |
39dabefd | 51 | #include "c-family/c-common.h" |
61d3ce20 | 52 | #include "c-family/c-objc.h" |
bc4071dd RH |
53 | #include "vec.h" |
54 | #include "target.h" | |
474eccc6 | 55 | #include "cgraph.h" |
68a607d8 | 56 | #include "plugin.h" |
27bf414c JM |
57 | |
58 | \f | |
27bf414c JM |
59 | /* Initialization routine for this file. */ |
60 | ||
61 | void | |
62 | c_parse_init (void) | |
63 | { | |
64 | /* The only initialization required is of the reserved word | |
65 | identifiers. */ | |
66 | unsigned int i; | |
67 | tree id; | |
eea1139b | 68 | int mask = 0; |
27bf414c | 69 | |
36c5e70a BE |
70 | /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in |
71 | the c_token structure. */ | |
72 | gcc_assert (RID_MAX <= 255); | |
73 | ||
eea1139b ILT |
74 | mask |= D_CXXONLY; |
75 | if (!flag_isoc99) | |
76 | mask |= D_C99; | |
77 | if (flag_no_asm) | |
78 | { | |
79 | mask |= D_ASM | D_EXT; | |
80 | if (!flag_isoc99) | |
81 | mask |= D_EXT89; | |
82 | } | |
27bf414c | 83 | if (!c_dialect_objc ()) |
eea1139b | 84 | mask |= D_OBJC | D_CXX_OBJC; |
27bf414c | 85 | |
a9429e29 | 86 | ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX); |
eea1139b | 87 | for (i = 0; i < num_c_common_reswords; i++) |
27bf414c JM |
88 | { |
89 | /* If a keyword is disabled, do not enter it into the table | |
90 | and so create a canonical spelling that isn't a keyword. */ | |
eea1139b ILT |
91 | if (c_common_reswords[i].disable & mask) |
92 | { | |
93 | if (warn_cxx_compat | |
94 | && (c_common_reswords[i].disable & D_CXXWARN)) | |
95 | { | |
96 | id = get_identifier (c_common_reswords[i].word); | |
97 | C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN); | |
98 | C_IS_RESERVED_WORD (id) = 1; | |
99 | } | |
100 | continue; | |
101 | } | |
27bf414c | 102 | |
eea1139b ILT |
103 | id = get_identifier (c_common_reswords[i].word); |
104 | C_SET_RID_CODE (id, c_common_reswords[i].rid); | |
27bf414c | 105 | C_IS_RESERVED_WORD (id) = 1; |
eea1139b | 106 | ridpointers [(int) c_common_reswords[i].rid] = id; |
27bf414c JM |
107 | } |
108 | } | |
109 | \f | |
110 | /* The C lexer intermediates between the lexer in cpplib and c-lex.c | |
111 | and the C parser. Unlike the C++ lexer, the parser structure | |
112 | stores the lexer information instead of using a separate structure. | |
113 | Identifiers are separated into ordinary identifiers, type names, | |
114 | keywords and some other Objective-C types of identifiers, and some | |
115 | look-ahead is maintained. | |
116 | ||
117 | ??? It might be a good idea to lex the whole file up front (as for | |
118 | C++). It would then be possible to share more of the C and C++ | |
119 | lexer code, if desired. */ | |
120 | ||
121 | /* The following local token type is used. */ | |
122 | ||
123 | /* A keyword. */ | |
124 | #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) | |
125 | ||
27bf414c JM |
126 | /* More information about the type of a CPP_NAME token. */ |
127 | typedef enum c_id_kind { | |
128 | /* An ordinary identifier. */ | |
129 | C_ID_ID, | |
130 | /* An identifier declared as a typedef name. */ | |
131 | C_ID_TYPENAME, | |
132 | /* An identifier declared as an Objective-C class name. */ | |
133 | C_ID_CLASSNAME, | |
36c5e70a BE |
134 | /* An address space identifier. */ |
135 | C_ID_ADDRSPACE, | |
27bf414c JM |
136 | /* Not an identifier. */ |
137 | C_ID_NONE | |
138 | } c_id_kind; | |
139 | ||
140 | /* A single C token after string literal concatenation and conversion | |
141 | of preprocessing tokens to tokens. */ | |
d1b38208 | 142 | typedef struct GTY (()) c_token { |
27bf414c JM |
143 | /* The kind of token. */ |
144 | ENUM_BITFIELD (cpp_ttype) type : 8; | |
145 | /* If this token is a CPP_NAME, this value indicates whether also | |
146 | declared as some kind of type. Otherwise, it is C_ID_NONE. */ | |
147 | ENUM_BITFIELD (c_id_kind) id_kind : 8; | |
148 | /* If this token is a keyword, this value indicates which keyword. | |
149 | Otherwise, this value is RID_MAX. */ | |
150 | ENUM_BITFIELD (rid) keyword : 8; | |
bc4071dd RH |
151 | /* If this token is a CPP_PRAGMA, this indicates the pragma that |
152 | was seen. Otherwise it is PRAGMA_NONE. */ | |
13fa1171 | 153 | ENUM_BITFIELD (pragma_kind) pragma_kind : 8; |
27bf414c JM |
154 | /* The location at which this token was found. */ |
155 | location_t location; | |
8415f317 NF |
156 | /* The value associated with this token, if any. */ |
157 | tree value; | |
27bf414c JM |
158 | } c_token; |
159 | ||
160 | /* A parser structure recording information about the state and | |
161 | context of parsing. Includes lexer information with up to two | |
162 | tokens of look-ahead; more are not needed for C. */ | |
d1b38208 | 163 | typedef struct GTY(()) c_parser { |
27bf414c JM |
164 | /* The look-ahead tokens. */ |
165 | c_token tokens[2]; | |
166 | /* How many look-ahead tokens are available (0, 1 or 2). */ | |
167 | short tokens_avail; | |
168 | /* True if a syntax error is being recovered from; false otherwise. | |
169 | c_parser_error sets this flag. It should clear this flag when | |
170 | enough tokens have been consumed to recover from the error. */ | |
171 | BOOL_BITFIELD error : 1; | |
bc4071dd RH |
172 | /* True if we're processing a pragma, and shouldn't automatically |
173 | consume CPP_PRAGMA_EOL. */ | |
174 | BOOL_BITFIELD in_pragma : 1; | |
b4b56033 MLI |
175 | /* True if we're parsing the outermost block of an if statement. */ |
176 | BOOL_BITFIELD in_if_block : 1; | |
46c2514e TT |
177 | /* True if we want to lex an untranslated string. */ |
178 | BOOL_BITFIELD lex_untranslated_string : 1; | |
1973201f | 179 | |
0bacb8c7 | 180 | /* Objective-C specific parser/lexer information. */ |
1973201f NP |
181 | |
182 | /* True if we are in a context where the Objective-C "PQ" keywords | |
183 | are considered keywords. */ | |
0bacb8c7 | 184 | BOOL_BITFIELD objc_pq_context : 1; |
f05b9d93 NP |
185 | /* True if we are parsing a (potential) Objective-C foreach |
186 | statement. This is set to true after we parsed 'for (' and while | |
187 | we wait for 'in' or ';' to decide if it's a standard C for loop or an | |
188 | Objective-C foreach loop. */ | |
189 | BOOL_BITFIELD objc_could_be_foreach_context : 1; | |
0bacb8c7 TT |
190 | /* The following flag is needed to contextualize Objective-C lexical |
191 | analysis. In some cases (e.g., 'int NSObject;'), it is | |
192 | undesirable to bind an identifier to an Objective-C class, even | |
193 | if a class with that name exists. */ | |
194 | BOOL_BITFIELD objc_need_raw_identifier : 1; | |
0a35513e AH |
195 | /* Nonzero if we're processing a __transaction statement. The value |
196 | is 1 | TM_STMT_ATTR_*. */ | |
197 | unsigned int in_transaction : 4; | |
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 | |
d853ee42 | 256 | context. */ |
1973201f | 257 | if (parser->objc_pq_context) |
27bf414c | 258 | { |
27bf414c JM |
259 | token->type = CPP_KEYWORD; |
260 | token->keyword = rid_code; | |
261 | break; | |
262 | } | |
f05b9d93 NP |
263 | else if (parser->objc_could_be_foreach_context |
264 | && rid_code == RID_IN) | |
265 | { | |
266 | /* We are in Objective-C, inside a (potential) | |
267 | foreach context (which means after having | |
268 | parsed 'for (', but before having parsed ';'), | |
269 | and we found 'in'. We consider it the keyword | |
270 | which terminates the declaration at the | |
271 | beginning of a foreach-statement. Note that | |
272 | this means you can't use 'in' for anything else | |
273 | in that context; in particular, in Objective-C | |
274 | you can't use 'in' as the name of the running | |
275 | variable in a C for loop. We could potentially | |
276 | try to add code here to disambiguate, but it | |
d853ee42 | 277 | seems a reasonable limitation. */ |
f05b9d93 NP |
278 | token->type = CPP_KEYWORD; |
279 | token->keyword = rid_code; | |
280 | break; | |
281 | } | |
1973201f NP |
282 | /* Else, "pq" keywords outside of the "pq" context are |
283 | not keywords, and we fall through to the code for | |
d853ee42 | 284 | normal tokens. */ |
1973201f | 285 | } |
668ea4b1 IS |
286 | else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code)) |
287 | { | |
d853ee42 NP |
288 | /* We found an Objective-C "property attribute" |
289 | keyword (getter, setter, readonly, etc). These are | |
668ea4b1 IS |
290 | only valid in the property context. */ |
291 | if (parser->objc_property_attr_context) | |
292 | { | |
293 | token->type = CPP_KEYWORD; | |
294 | token->keyword = rid_code; | |
295 | break; | |
296 | } | |
297 | /* Else they are not special keywords. | |
298 | */ | |
299 | } | |
1973201f NP |
300 | else if (c_dialect_objc () |
301 | && (OBJC_IS_AT_KEYWORD (rid_code) | |
302 | || OBJC_IS_CXX_KEYWORD (rid_code))) | |
303 | { | |
304 | /* We found one of the Objective-C "@" keywords (defs, | |
305 | selector, synchronized, etc) or one of the | |
306 | Objective-C "cxx" keywords (class, private, | |
307 | protected, public, try, catch, throw) without a | |
308 | preceding '@' sign. Do nothing and fall through to | |
309 | the code for normal tokens (in C++ we would still | |
d853ee42 | 310 | consider the CXX ones keywords, but not in C). */ |
1973201f | 311 | ; |
27bf414c JM |
312 | } |
313 | else | |
314 | { | |
27bf414c JM |
315 | token->type = CPP_KEYWORD; |
316 | token->keyword = rid_code; | |
317 | break; | |
318 | } | |
319 | } | |
320 | ||
321 | decl = lookup_name (token->value); | |
322 | if (decl) | |
323 | { | |
324 | if (TREE_CODE (decl) == TYPE_DECL) | |
325 | { | |
326 | token->id_kind = C_ID_TYPENAME; | |
327 | break; | |
328 | } | |
329 | } | |
330 | else if (c_dialect_objc ()) | |
331 | { | |
332 | tree objc_interface_decl = objc_is_class_name (token->value); | |
333 | /* Objective-C class names are in the same namespace as | |
334 | variables and typedefs, and hence are shadowed by local | |
335 | declarations. */ | |
336 | if (objc_interface_decl | |
0d8a2528 | 337 | && (!objc_force_identifier || global_bindings_p ())) |
27bf414c JM |
338 | { |
339 | token->value = objc_interface_decl; | |
340 | token->id_kind = C_ID_CLASSNAME; | |
341 | break; | |
342 | } | |
343 | } | |
bc4071dd | 344 | token->id_kind = C_ID_ID; |
27bf414c | 345 | } |
27bf414c JM |
346 | break; |
347 | case CPP_AT_NAME: | |
348 | /* This only happens in Objective-C; it must be a keyword. */ | |
349 | token->type = CPP_KEYWORD; | |
49b91f05 NP |
350 | switch (C_RID_CODE (token->value)) |
351 | { | |
352 | /* Replace 'class' with '@class', 'private' with '@private', | |
353 | etc. This prevents confusion with the C++ keyword | |
354 | 'class', and makes the tokens consistent with other | |
355 | Objective-C 'AT' keywords. For example '@class' is | |
356 | reported as RID_AT_CLASS which is consistent with | |
357 | '@synchronized', which is reported as | |
358 | RID_AT_SYNCHRONIZED. | |
359 | */ | |
360 | case RID_CLASS: token->keyword = RID_AT_CLASS; break; | |
361 | case RID_PRIVATE: token->keyword = RID_AT_PRIVATE; break; | |
362 | case RID_PROTECTED: token->keyword = RID_AT_PROTECTED; break; | |
363 | case RID_PUBLIC: token->keyword = RID_AT_PUBLIC; break; | |
364 | case RID_THROW: token->keyword = RID_AT_THROW; break; | |
365 | case RID_TRY: token->keyword = RID_AT_TRY; break; | |
366 | case RID_CATCH: token->keyword = RID_AT_CATCH; break; | |
367 | default: token->keyword = C_RID_CODE (token->value); | |
368 | } | |
27bf414c JM |
369 | break; |
370 | case CPP_COLON: | |
371 | case CPP_COMMA: | |
372 | case CPP_CLOSE_PAREN: | |
373 | case CPP_SEMICOLON: | |
374 | /* These tokens may affect the interpretation of any identifiers | |
375 | following, if doing Objective-C. */ | |
0bacb8c7 TT |
376 | if (c_dialect_objc ()) |
377 | parser->objc_need_raw_identifier = false; | |
bc4071dd RH |
378 | break; |
379 | case CPP_PRAGMA: | |
380 | /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */ | |
d75d71e0 | 381 | token->pragma_kind = (enum pragma_kind) TREE_INT_CST_LOW (token->value); |
bc4071dd | 382 | token->value = NULL; |
27bf414c JM |
383 | break; |
384 | default: | |
27bf414c JM |
385 | break; |
386 | } | |
387 | timevar_pop (TV_LEX); | |
388 | } | |
389 | ||
390 | /* Return a pointer to the next token from PARSER, reading it in if | |
391 | necessary. */ | |
392 | ||
393 | static inline c_token * | |
394 | c_parser_peek_token (c_parser *parser) | |
395 | { | |
396 | if (parser->tokens_avail == 0) | |
397 | { | |
0bacb8c7 | 398 | c_lex_one_token (parser, &parser->tokens[0]); |
27bf414c JM |
399 | parser->tokens_avail = 1; |
400 | } | |
401 | return &parser->tokens[0]; | |
402 | } | |
403 | ||
404 | /* Return true if the next token from PARSER has the indicated | |
405 | TYPE. */ | |
406 | ||
407 | static inline bool | |
408 | c_parser_next_token_is (c_parser *parser, enum cpp_ttype type) | |
409 | { | |
410 | return c_parser_peek_token (parser)->type == type; | |
411 | } | |
412 | ||
413 | /* Return true if the next token from PARSER does not have the | |
414 | indicated TYPE. */ | |
415 | ||
416 | static inline bool | |
417 | c_parser_next_token_is_not (c_parser *parser, enum cpp_ttype type) | |
418 | { | |
419 | return !c_parser_next_token_is (parser, type); | |
420 | } | |
421 | ||
422 | /* Return true if the next token from PARSER is the indicated | |
423 | KEYWORD. */ | |
424 | ||
425 | static inline bool | |
426 | c_parser_next_token_is_keyword (c_parser *parser, enum rid keyword) | |
427 | { | |
dbc518f0 | 428 | return c_parser_peek_token (parser)->keyword == keyword; |
27bf414c JM |
429 | } |
430 | ||
29ce73cb PB |
431 | /* Return a pointer to the next-but-one token from PARSER, reading it |
432 | in if necessary. The next token is already read in. */ | |
433 | ||
434 | static c_token * | |
435 | c_parser_peek_2nd_token (c_parser *parser) | |
436 | { | |
437 | if (parser->tokens_avail >= 2) | |
438 | return &parser->tokens[1]; | |
439 | gcc_assert (parser->tokens_avail == 1); | |
440 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
441 | gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL); | |
442 | c_lex_one_token (parser, &parser->tokens[1]); | |
443 | parser->tokens_avail = 2; | |
444 | return &parser->tokens[1]; | |
445 | } | |
446 | ||
27bf414c JM |
447 | /* Return true if TOKEN can start a type name, |
448 | false otherwise. */ | |
449 | static bool | |
450 | c_token_starts_typename (c_token *token) | |
451 | { | |
452 | switch (token->type) | |
453 | { | |
454 | case CPP_NAME: | |
455 | switch (token->id_kind) | |
456 | { | |
457 | case C_ID_ID: | |
458 | return false; | |
36c5e70a BE |
459 | case C_ID_ADDRSPACE: |
460 | return true; | |
27bf414c JM |
461 | case C_ID_TYPENAME: |
462 | return true; | |
463 | case C_ID_CLASSNAME: | |
464 | gcc_assert (c_dialect_objc ()); | |
465 | return true; | |
466 | default: | |
467 | gcc_unreachable (); | |
468 | } | |
469 | case CPP_KEYWORD: | |
470 | switch (token->keyword) | |
471 | { | |
472 | case RID_UNSIGNED: | |
473 | case RID_LONG: | |
a6766312 | 474 | case RID_INT128: |
27bf414c JM |
475 | case RID_SHORT: |
476 | case RID_SIGNED: | |
477 | case RID_COMPLEX: | |
478 | case RID_INT: | |
479 | case RID_CHAR: | |
480 | case RID_FLOAT: | |
481 | case RID_DOUBLE: | |
482 | case RID_VOID: | |
9a8ce21f JG |
483 | case RID_DFLOAT32: |
484 | case RID_DFLOAT64: | |
485 | case RID_DFLOAT128: | |
27bf414c JM |
486 | case RID_BOOL: |
487 | case RID_ENUM: | |
488 | case RID_STRUCT: | |
489 | case RID_UNION: | |
490 | case RID_TYPEOF: | |
491 | case RID_CONST: | |
492 | case RID_VOLATILE: | |
493 | case RID_RESTRICT: | |
494 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
495 | case RID_FRACT: |
496 | case RID_ACCUM: | |
497 | case RID_SAT: | |
27bf414c JM |
498 | return true; |
499 | default: | |
500 | return false; | |
501 | } | |
502 | case CPP_LESS: | |
503 | if (c_dialect_objc ()) | |
504 | return true; | |
505 | return false; | |
506 | default: | |
507 | return false; | |
508 | } | |
509 | } | |
510 | ||
29ce73cb PB |
511 | enum c_lookahead_kind { |
512 | /* Always treat unknown identifiers as typenames. */ | |
513 | cla_prefer_type, | |
514 | ||
515 | /* Could be parsing a nonabstract declarator. Only treat an identifier | |
516 | as a typename if followed by another identifier or a star. */ | |
517 | cla_nonabstract_decl, | |
518 | ||
519 | /* Never treat identifiers as typenames. */ | |
520 | cla_prefer_id | |
521 | }; | |
522 | ||
27bf414c | 523 | /* Return true if the next token from PARSER can start a type name, |
29ce73cb PB |
524 | false otherwise. LA specifies how to do lookahead in order to |
525 | detect unknown type names. If unsure, pick CLA_PREFER_ID. */ | |
526 | ||
27bf414c | 527 | static inline bool |
29ce73cb | 528 | c_parser_next_tokens_start_typename (c_parser *parser, enum c_lookahead_kind la) |
27bf414c JM |
529 | { |
530 | c_token *token = c_parser_peek_token (parser); | |
29ce73cb PB |
531 | if (c_token_starts_typename (token)) |
532 | return true; | |
533 | ||
534 | /* Try a bit harder to detect an unknown typename. */ | |
535 | if (la != cla_prefer_id | |
536 | && token->type == CPP_NAME | |
537 | && token->id_kind == C_ID_ID | |
538 | ||
539 | /* Do not try too hard when we could have "object in array". */ | |
540 | && !parser->objc_could_be_foreach_context | |
541 | ||
542 | && (la == cla_prefer_type | |
543 | || c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
544 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
545 | ||
546 | /* Only unknown identifiers. */ | |
547 | && !lookup_name (token->value)) | |
548 | return true; | |
549 | ||
550 | return false; | |
27bf414c JM |
551 | } |
552 | ||
f725e721 PB |
553 | /* Return true if TOKEN is a type qualifier, false otherwise. */ |
554 | static bool | |
555 | c_token_is_qualifier (c_token *token) | |
556 | { | |
557 | switch (token->type) | |
558 | { | |
559 | case CPP_NAME: | |
560 | switch (token->id_kind) | |
561 | { | |
562 | case C_ID_ADDRSPACE: | |
563 | return true; | |
564 | default: | |
565 | return false; | |
566 | } | |
567 | case CPP_KEYWORD: | |
568 | switch (token->keyword) | |
569 | { | |
570 | case RID_CONST: | |
571 | case RID_VOLATILE: | |
572 | case RID_RESTRICT: | |
573 | case RID_ATTRIBUTE: | |
574 | return true; | |
575 | default: | |
576 | return false; | |
577 | } | |
578 | case CPP_LESS: | |
579 | return false; | |
580 | default: | |
581 | gcc_unreachable (); | |
582 | } | |
583 | } | |
584 | ||
585 | /* Return true if the next token from PARSER is a type qualifier, | |
586 | false otherwise. */ | |
587 | static inline bool | |
588 | c_parser_next_token_is_qualifier (c_parser *parser) | |
589 | { | |
590 | c_token *token = c_parser_peek_token (parser); | |
591 | return c_token_is_qualifier (token); | |
592 | } | |
593 | ||
27bf414c JM |
594 | /* Return true if TOKEN can start declaration specifiers, false |
595 | otherwise. */ | |
596 | static bool | |
597 | c_token_starts_declspecs (c_token *token) | |
598 | { | |
599 | switch (token->type) | |
600 | { | |
601 | case CPP_NAME: | |
602 | switch (token->id_kind) | |
603 | { | |
604 | case C_ID_ID: | |
605 | return false; | |
36c5e70a BE |
606 | case C_ID_ADDRSPACE: |
607 | return true; | |
27bf414c JM |
608 | case C_ID_TYPENAME: |
609 | return true; | |
610 | case C_ID_CLASSNAME: | |
611 | gcc_assert (c_dialect_objc ()); | |
612 | return true; | |
613 | default: | |
614 | gcc_unreachable (); | |
615 | } | |
616 | case CPP_KEYWORD: | |
617 | switch (token->keyword) | |
618 | { | |
619 | case RID_STATIC: | |
620 | case RID_EXTERN: | |
621 | case RID_REGISTER: | |
622 | case RID_TYPEDEF: | |
623 | case RID_INLINE: | |
bbceee64 | 624 | case RID_NORETURN: |
27bf414c JM |
625 | case RID_AUTO: |
626 | case RID_THREAD: | |
627 | case RID_UNSIGNED: | |
628 | case RID_LONG: | |
a6766312 | 629 | case RID_INT128: |
27bf414c JM |
630 | case RID_SHORT: |
631 | case RID_SIGNED: | |
632 | case RID_COMPLEX: | |
633 | case RID_INT: | |
634 | case RID_CHAR: | |
635 | case RID_FLOAT: | |
636 | case RID_DOUBLE: | |
637 | case RID_VOID: | |
9a8ce21f JG |
638 | case RID_DFLOAT32: |
639 | case RID_DFLOAT64: | |
640 | case RID_DFLOAT128: | |
27bf414c JM |
641 | case RID_BOOL: |
642 | case RID_ENUM: | |
643 | case RID_STRUCT: | |
644 | case RID_UNION: | |
645 | case RID_TYPEOF: | |
646 | case RID_CONST: | |
647 | case RID_VOLATILE: | |
648 | case RID_RESTRICT: | |
649 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
650 | case RID_FRACT: |
651 | case RID_ACCUM: | |
652 | case RID_SAT: | |
d19fa6b5 | 653 | case RID_ALIGNAS: |
27bf414c JM |
654 | return true; |
655 | default: | |
656 | return false; | |
657 | } | |
658 | case CPP_LESS: | |
659 | if (c_dialect_objc ()) | |
660 | return true; | |
661 | return false; | |
662 | default: | |
663 | return false; | |
664 | } | |
665 | } | |
666 | ||
32912286 JM |
667 | |
668 | /* Return true if TOKEN can start declaration specifiers or a static | |
669 | assertion, false otherwise. */ | |
670 | static bool | |
671 | c_token_starts_declaration (c_token *token) | |
672 | { | |
673 | if (c_token_starts_declspecs (token) | |
674 | || token->keyword == RID_STATIC_ASSERT) | |
675 | return true; | |
676 | else | |
677 | return false; | |
678 | } | |
679 | ||
27bf414c JM |
680 | /* Return true if the next token from PARSER can start declaration |
681 | specifiers, false otherwise. */ | |
682 | static inline bool | |
683 | c_parser_next_token_starts_declspecs (c_parser *parser) | |
684 | { | |
685 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
686 | |
687 | /* In Objective-C, a classname normally starts a declspecs unless it | |
688 | is immediately followed by a dot. In that case, it is the | |
689 | Objective-C 2.0 "dot-syntax" for class objects, ie, calls the | |
690 | setter/getter on the class. c_token_starts_declspecs() can't | |
691 | differentiate between the two cases because it only checks the | |
692 | current token, so we have a special check here. */ | |
693 | if (c_dialect_objc () | |
694 | && token->type == CPP_NAME | |
695 | && token->id_kind == C_ID_CLASSNAME | |
696 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
697 | return false; | |
698 | ||
27bf414c JM |
699 | return c_token_starts_declspecs (token); |
700 | } | |
701 | ||
2f413185 | 702 | /* Return true if the next tokens from PARSER can start declaration |
32912286 JM |
703 | specifiers or a static assertion, false otherwise. */ |
704 | static inline bool | |
2f413185 | 705 | c_parser_next_tokens_start_declaration (c_parser *parser) |
32912286 JM |
706 | { |
707 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
708 | |
709 | /* Same as above. */ | |
710 | if (c_dialect_objc () | |
711 | && token->type == CPP_NAME | |
712 | && token->id_kind == C_ID_CLASSNAME | |
713 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
714 | return false; | |
715 | ||
2f413185 PB |
716 | /* Labels do not start declarations. */ |
717 | if (token->type == CPP_NAME | |
718 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
719 | return false; | |
720 | ||
721 | if (c_token_starts_declaration (token)) | |
722 | return true; | |
723 | ||
29ce73cb | 724 | if (c_parser_next_tokens_start_typename (parser, cla_nonabstract_decl)) |
2f413185 PB |
725 | return true; |
726 | ||
727 | return false; | |
32912286 JM |
728 | } |
729 | ||
27bf414c JM |
730 | /* Consume the next token from PARSER. */ |
731 | ||
732 | static void | |
733 | c_parser_consume_token (c_parser *parser) | |
734 | { | |
bc4071dd RH |
735 | gcc_assert (parser->tokens_avail >= 1); |
736 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
737 | gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL); | |
738 | gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA); | |
27bf414c JM |
739 | if (parser->tokens_avail == 2) |
740 | parser->tokens[0] = parser->tokens[1]; | |
27bf414c JM |
741 | parser->tokens_avail--; |
742 | } | |
743 | ||
bc4071dd RH |
744 | /* Expect the current token to be a #pragma. Consume it and remember |
745 | that we've begun parsing a pragma. */ | |
746 | ||
747 | static void | |
748 | c_parser_consume_pragma (c_parser *parser) | |
749 | { | |
750 | gcc_assert (!parser->in_pragma); | |
751 | gcc_assert (parser->tokens_avail >= 1); | |
752 | gcc_assert (parser->tokens[0].type == CPP_PRAGMA); | |
753 | if (parser->tokens_avail == 2) | |
754 | parser->tokens[0] = parser->tokens[1]; | |
755 | parser->tokens_avail--; | |
756 | parser->in_pragma = true; | |
757 | } | |
758 | ||
27bf414c JM |
759 | /* Update the globals input_location and in_system_header from |
760 | TOKEN. */ | |
761 | static inline void | |
762 | c_parser_set_source_position_from_token (c_token *token) | |
763 | { | |
764 | if (token->type != CPP_EOF) | |
765 | { | |
766 | input_location = token->location; | |
27bf414c JM |
767 | } |
768 | } | |
769 | ||
27bf414c JM |
770 | /* Issue a diagnostic of the form |
771 | FILE:LINE: MESSAGE before TOKEN | |
772 | where TOKEN is the next token in the input stream of PARSER. | |
773 | MESSAGE (specified by the caller) is usually of the form "expected | |
774 | OTHER-TOKEN". | |
775 | ||
776 | Do not issue a diagnostic if still recovering from an error. | |
777 | ||
778 | ??? This is taken from the C++ parser, but building up messages in | |
779 | this way is not i18n-friendly and some other approach should be | |
780 | used. */ | |
781 | ||
782 | static void | |
4b794eaf | 783 | c_parser_error (c_parser *parser, const char *gmsgid) |
27bf414c JM |
784 | { |
785 | c_token *token = c_parser_peek_token (parser); | |
786 | if (parser->error) | |
787 | return; | |
788 | parser->error = true; | |
4b794eaf | 789 | if (!gmsgid) |
27bf414c JM |
790 | return; |
791 | /* This diagnostic makes more sense if it is tagged to the line of | |
792 | the token we just peeked at. */ | |
793 | c_parser_set_source_position_from_token (token); | |
4b794eaf | 794 | c_parse_error (gmsgid, |
27bf414c JM |
795 | /* Because c_parse_error does not understand |
796 | CPP_KEYWORD, keywords are treated like | |
797 | identifiers. */ | |
798 | (token->type == CPP_KEYWORD ? CPP_NAME : token->type), | |
cfc93532 MLI |
799 | /* ??? The C parser does not save the cpp flags of a |
800 | token, we need to pass 0 here and we will not get | |
801 | the source spelling of some tokens but rather the | |
802 | canonical spelling. */ | |
803 | token->value, /*flags=*/0); | |
27bf414c JM |
804 | } |
805 | ||
806 | /* If the next token is of the indicated TYPE, consume it. Otherwise, | |
807 | issue the error MSGID. If MSGID is NULL then a message has already | |
808 | been produced and no message will be produced this time. Returns | |
809 | true if found, false otherwise. */ | |
810 | ||
811 | static bool | |
812 | c_parser_require (c_parser *parser, | |
813 | enum cpp_ttype type, | |
814 | const char *msgid) | |
815 | { | |
816 | if (c_parser_next_token_is (parser, type)) | |
817 | { | |
818 | c_parser_consume_token (parser); | |
819 | return true; | |
820 | } | |
821 | else | |
822 | { | |
823 | c_parser_error (parser, msgid); | |
824 | return false; | |
825 | } | |
826 | } | |
827 | ||
828 | /* If the next token is the indicated keyword, consume it. Otherwise, | |
829 | issue the error MSGID. Returns true if found, false otherwise. */ | |
830 | ||
831 | static bool | |
832 | c_parser_require_keyword (c_parser *parser, | |
833 | enum rid keyword, | |
834 | const char *msgid) | |
835 | { | |
836 | if (c_parser_next_token_is_keyword (parser, keyword)) | |
837 | { | |
838 | c_parser_consume_token (parser); | |
839 | return true; | |
840 | } | |
841 | else | |
842 | { | |
843 | c_parser_error (parser, msgid); | |
844 | return false; | |
845 | } | |
846 | } | |
847 | ||
848 | /* Like c_parser_require, except that tokens will be skipped until the | |
849 | desired token is found. An error message is still produced if the | |
850 | next token is not as expected. If MSGID is NULL then a message has | |
851 | already been produced and no message will be produced this | |
852 | time. */ | |
853 | ||
854 | static void | |
855 | c_parser_skip_until_found (c_parser *parser, | |
856 | enum cpp_ttype type, | |
857 | const char *msgid) | |
858 | { | |
859 | unsigned nesting_depth = 0; | |
860 | ||
861 | if (c_parser_require (parser, type, msgid)) | |
862 | return; | |
863 | ||
864 | /* Skip tokens until the desired token is found. */ | |
865 | while (true) | |
866 | { | |
867 | /* Peek at the next token. */ | |
868 | c_token *token = c_parser_peek_token (parser); | |
869 | /* If we've reached the token we want, consume it and stop. */ | |
870 | if (token->type == type && !nesting_depth) | |
871 | { | |
872 | c_parser_consume_token (parser); | |
873 | break; | |
874 | } | |
bc4071dd | 875 | |
27bf414c JM |
876 | /* If we've run out of tokens, stop. */ |
877 | if (token->type == CPP_EOF) | |
878 | return; | |
bc4071dd RH |
879 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
880 | return; | |
27bf414c JM |
881 | if (token->type == CPP_OPEN_BRACE |
882 | || token->type == CPP_OPEN_PAREN | |
883 | || token->type == CPP_OPEN_SQUARE) | |
884 | ++nesting_depth; | |
885 | else if (token->type == CPP_CLOSE_BRACE | |
886 | || token->type == CPP_CLOSE_PAREN | |
887 | || token->type == CPP_CLOSE_SQUARE) | |
888 | { | |
889 | if (nesting_depth-- == 0) | |
890 | break; | |
891 | } | |
892 | /* Consume this token. */ | |
893 | c_parser_consume_token (parser); | |
894 | } | |
895 | parser->error = false; | |
896 | } | |
897 | ||
898 | /* Skip tokens until the end of a parameter is found, but do not | |
899 | consume the comma, semicolon or closing delimiter. */ | |
900 | ||
901 | static void | |
902 | c_parser_skip_to_end_of_parameter (c_parser *parser) | |
903 | { | |
904 | unsigned nesting_depth = 0; | |
905 | ||
906 | while (true) | |
907 | { | |
908 | c_token *token = c_parser_peek_token (parser); | |
909 | if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON) | |
910 | && !nesting_depth) | |
911 | break; | |
912 | /* If we've run out of tokens, stop. */ | |
913 | if (token->type == CPP_EOF) | |
914 | return; | |
bc4071dd RH |
915 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
916 | return; | |
27bf414c JM |
917 | if (token->type == CPP_OPEN_BRACE |
918 | || token->type == CPP_OPEN_PAREN | |
919 | || token->type == CPP_OPEN_SQUARE) | |
920 | ++nesting_depth; | |
921 | else if (token->type == CPP_CLOSE_BRACE | |
922 | || token->type == CPP_CLOSE_PAREN | |
923 | || token->type == CPP_CLOSE_SQUARE) | |
924 | { | |
925 | if (nesting_depth-- == 0) | |
926 | break; | |
927 | } | |
928 | /* Consume this token. */ | |
929 | c_parser_consume_token (parser); | |
930 | } | |
931 | parser->error = false; | |
932 | } | |
933 | ||
bc4071dd RH |
934 | /* Expect to be at the end of the pragma directive and consume an |
935 | end of line marker. */ | |
936 | ||
937 | static void | |
938 | c_parser_skip_to_pragma_eol (c_parser *parser) | |
939 | { | |
940 | gcc_assert (parser->in_pragma); | |
941 | parser->in_pragma = false; | |
942 | ||
943 | if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line")) | |
944 | while (true) | |
945 | { | |
946 | c_token *token = c_parser_peek_token (parser); | |
947 | if (token->type == CPP_EOF) | |
948 | break; | |
949 | if (token->type == CPP_PRAGMA_EOL) | |
950 | { | |
951 | c_parser_consume_token (parser); | |
952 | break; | |
953 | } | |
954 | c_parser_consume_token (parser); | |
955 | } | |
956 | ||
957 | parser->error = false; | |
958 | } | |
27bf414c | 959 | |
2a83cc52 RH |
960 | /* Skip tokens until we have consumed an entire block, or until we |
961 | have consumed a non-nested ';'. */ | |
962 | ||
963 | static void | |
964 | c_parser_skip_to_end_of_block_or_statement (c_parser *parser) | |
965 | { | |
966 | unsigned nesting_depth = 0; | |
967 | bool save_error = parser->error; | |
968 | ||
969 | while (true) | |
970 | { | |
971 | c_token *token; | |
972 | ||
973 | /* Peek at the next token. */ | |
974 | token = c_parser_peek_token (parser); | |
975 | ||
976 | switch (token->type) | |
977 | { | |
978 | case CPP_EOF: | |
979 | return; | |
980 | ||
981 | case CPP_PRAGMA_EOL: | |
982 | if (parser->in_pragma) | |
983 | return; | |
984 | break; | |
985 | ||
986 | case CPP_SEMICOLON: | |
987 | /* If the next token is a ';', we have reached the | |
988 | end of the statement. */ | |
989 | if (!nesting_depth) | |
990 | { | |
991 | /* Consume the ';'. */ | |
992 | c_parser_consume_token (parser); | |
993 | goto finished; | |
994 | } | |
995 | break; | |
996 | ||
997 | case CPP_CLOSE_BRACE: | |
998 | /* If the next token is a non-nested '}', then we have | |
999 | reached the end of the current block. */ | |
1000 | if (nesting_depth == 0 || --nesting_depth == 0) | |
1001 | { | |
1002 | c_parser_consume_token (parser); | |
1003 | goto finished; | |
1004 | } | |
1005 | break; | |
1006 | ||
1007 | case CPP_OPEN_BRACE: | |
1008 | /* If it the next token is a '{', then we are entering a new | |
1009 | block. Consume the entire block. */ | |
1010 | ++nesting_depth; | |
1011 | break; | |
1012 | ||
1013 | case CPP_PRAGMA: | |
1014 | /* If we see a pragma, consume the whole thing at once. We | |
1015 | have some safeguards against consuming pragmas willy-nilly. | |
1016 | Normally, we'd expect to be here with parser->error set, | |
1017 | which disables these safeguards. But it's possible to get | |
1018 | here for secondary error recovery, after parser->error has | |
1019 | been cleared. */ | |
1020 | c_parser_consume_pragma (parser); | |
1021 | c_parser_skip_to_pragma_eol (parser); | |
1022 | parser->error = save_error; | |
1023 | continue; | |
9e33de05 RS |
1024 | |
1025 | default: | |
1026 | break; | |
2a83cc52 RH |
1027 | } |
1028 | ||
1029 | c_parser_consume_token (parser); | |
1030 | } | |
1031 | ||
1032 | finished: | |
1033 | parser->error = false; | |
1034 | } | |
1035 | ||
d2e796ad MLI |
1036 | /* CPP's options (initialized by c-opts.c). */ |
1037 | extern cpp_options *cpp_opts; | |
1038 | ||
27bf414c JM |
1039 | /* Save the warning flags which are controlled by __extension__. */ |
1040 | ||
1041 | static inline int | |
1042 | disable_extension_diagnostics (void) | |
1043 | { | |
1044 | int ret = (pedantic | |
1045 | | (warn_pointer_arith << 1) | |
1046 | | (warn_traditional << 2) | |
d2e796ad | 1047 | | (flag_iso << 3) |
24b97832 | 1048 | | (warn_long_long << 4) |
b3ab9ea2 TT |
1049 | | (warn_cxx_compat << 5) |
1050 | | (warn_overlength_strings << 6)); | |
e3339d0f | 1051 | cpp_opts->cpp_pedantic = pedantic = 0; |
27bf414c | 1052 | warn_pointer_arith = 0; |
e3339d0f | 1053 | cpp_opts->cpp_warn_traditional = warn_traditional = 0; |
27bf414c | 1054 | flag_iso = 0; |
e3339d0f | 1055 | cpp_opts->cpp_warn_long_long = warn_long_long = 0; |
24b97832 | 1056 | warn_cxx_compat = 0; |
b3ab9ea2 | 1057 | warn_overlength_strings = 0; |
27bf414c JM |
1058 | return ret; |
1059 | } | |
1060 | ||
1061 | /* Restore the warning flags which are controlled by __extension__. | |
1062 | FLAGS is the return value from disable_extension_diagnostics. */ | |
1063 | ||
1064 | static inline void | |
1065 | restore_extension_diagnostics (int flags) | |
1066 | { | |
e3339d0f | 1067 | cpp_opts->cpp_pedantic = pedantic = flags & 1; |
27bf414c | 1068 | warn_pointer_arith = (flags >> 1) & 1; |
e3339d0f | 1069 | cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1; |
27bf414c | 1070 | flag_iso = (flags >> 3) & 1; |
e3339d0f | 1071 | cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1; |
24b97832 | 1072 | warn_cxx_compat = (flags >> 5) & 1; |
b3ab9ea2 | 1073 | warn_overlength_strings = (flags >> 6) & 1; |
27bf414c JM |
1074 | } |
1075 | ||
1076 | /* Possibly kinds of declarator to parse. */ | |
1077 | typedef enum c_dtr_syn { | |
1078 | /* A normal declarator with an identifier. */ | |
1079 | C_DTR_NORMAL, | |
1080 | /* An abstract declarator (maybe empty). */ | |
1081 | C_DTR_ABSTRACT, | |
1082 | /* A parameter declarator: may be either, but after a type name does | |
1083 | not redeclare a typedef name as an identifier if it can | |
1084 | alternatively be interpreted as a typedef name; see DR#009, | |
1085 | applied in C90 TC1, omitted from C99 and reapplied in C99 TC2 | |
1086 | following DR#249. For example, given a typedef T, "int T" and | |
1087 | "int *T" are valid parameter declarations redeclaring T, while | |
1088 | "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are | |
1089 | abstract declarators rather than involving redundant parentheses; | |
1090 | the same applies with attributes inside the parentheses before | |
1091 | "T". */ | |
1092 | C_DTR_PARM | |
1093 | } c_dtr_syn; | |
1094 | ||
20906c66 JJ |
1095 | /* The binary operation precedence levels, where 0 is a dummy lowest level |
1096 | used for the bottom of the stack. */ | |
1097 | enum c_parser_prec { | |
1098 | PREC_NONE, | |
1099 | PREC_LOGOR, | |
1100 | PREC_LOGAND, | |
1101 | PREC_BITOR, | |
1102 | PREC_BITXOR, | |
1103 | PREC_BITAND, | |
1104 | PREC_EQ, | |
1105 | PREC_REL, | |
1106 | PREC_SHIFT, | |
1107 | PREC_ADD, | |
1108 | PREC_MULT, | |
1109 | NUM_PRECS | |
1110 | }; | |
1111 | ||
27bf414c JM |
1112 | static void c_parser_external_declaration (c_parser *); |
1113 | static void c_parser_asm_definition (c_parser *); | |
32912286 | 1114 | static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, |
f05b9d93 | 1115 | bool, bool, tree *); |
32912286 JM |
1116 | static void c_parser_static_assert_declaration_no_semi (c_parser *); |
1117 | static void c_parser_static_assert_declaration (c_parser *); | |
27bf414c | 1118 | static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool, |
29ce73cb | 1119 | bool, enum c_lookahead_kind); |
27bf414c JM |
1120 | static struct c_typespec c_parser_enum_specifier (c_parser *); |
1121 | static struct c_typespec c_parser_struct_or_union_specifier (c_parser *); | |
1122 | static tree c_parser_struct_declaration (c_parser *); | |
1123 | static struct c_typespec c_parser_typeof_specifier (c_parser *); | |
d19fa6b5 | 1124 | static tree c_parser_alignas_specifier (c_parser *); |
27bf414c JM |
1125 | static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn, |
1126 | bool *); | |
1127 | static struct c_declarator *c_parser_direct_declarator (c_parser *, bool, | |
1128 | c_dtr_syn, bool *); | |
1129 | static struct c_declarator *c_parser_direct_declarator_inner (c_parser *, | |
1130 | bool, | |
1131 | struct c_declarator *); | |
1132 | static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree); | |
a04a722b JM |
1133 | static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree, |
1134 | tree); | |
27bf414c JM |
1135 | static struct c_parm *c_parser_parameter_declaration (c_parser *, tree); |
1136 | static tree c_parser_simple_asm_expr (c_parser *); | |
1137 | static tree c_parser_attributes (c_parser *); | |
1138 | static struct c_type_name *c_parser_type_name (c_parser *); | |
1139 | static struct c_expr c_parser_initializer (c_parser *); | |
1140 | static struct c_expr c_parser_braced_init (c_parser *, tree, bool); | |
a1e3b3d9 LB |
1141 | static void c_parser_initelt (c_parser *, struct obstack *); |
1142 | static void c_parser_initval (c_parser *, struct c_expr *, | |
1143 | struct obstack *); | |
27bf414c JM |
1144 | static tree c_parser_compound_statement (c_parser *); |
1145 | static void c_parser_compound_statement_nostart (c_parser *); | |
1146 | static void c_parser_label (c_parser *); | |
1147 | static void c_parser_statement (c_parser *); | |
1148 | static void c_parser_statement_after_labels (c_parser *); | |
1149 | static void c_parser_if_statement (c_parser *); | |
1150 | static void c_parser_switch_statement (c_parser *); | |
1151 | static void c_parser_while_statement (c_parser *); | |
1152 | static void c_parser_do_statement (c_parser *); | |
1153 | static void c_parser_for_statement (c_parser *); | |
1154 | static tree c_parser_asm_statement (c_parser *); | |
eadd3d0d | 1155 | static tree c_parser_asm_operands (c_parser *); |
1c384bf1 | 1156 | static tree c_parser_asm_goto_operands (c_parser *); |
27bf414c JM |
1157 | static tree c_parser_asm_clobbers (c_parser *); |
1158 | static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *); | |
1159 | static struct c_expr c_parser_conditional_expression (c_parser *, | |
1160 | struct c_expr *); | |
20906c66 JJ |
1161 | static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *, |
1162 | enum c_parser_prec); | |
27bf414c JM |
1163 | static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *); |
1164 | static struct c_expr c_parser_unary_expression (c_parser *); | |
1165 | static struct c_expr c_parser_sizeof_expression (c_parser *); | |
1166 | static struct c_expr c_parser_alignof_expression (c_parser *); | |
1167 | static struct c_expr c_parser_postfix_expression (c_parser *); | |
1168 | static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *, | |
24b97832 ILT |
1169 | struct c_type_name *, |
1170 | location_t); | |
27bf414c | 1171 | static struct c_expr c_parser_postfix_expression_after_primary (c_parser *, |
c2255bc4 | 1172 | location_t loc, |
27bf414c | 1173 | struct c_expr); |
0a35513e AH |
1174 | static tree c_parser_transaction (c_parser *, enum rid); |
1175 | static struct c_expr c_parser_transaction_expression (c_parser *, enum rid); | |
1176 | static tree c_parser_transaction_cancel (c_parser *); | |
27bf414c | 1177 | static struct c_expr c_parser_expression (c_parser *); |
46bdb9cf | 1178 | static struct c_expr c_parser_expression_conv (c_parser *); |
9771b263 DN |
1179 | static vec<tree, va_gc> *c_parser_expr_list (c_parser *, bool, bool, |
1180 | vec<tree, va_gc> **, location_t *, | |
1181 | tree *); | |
953ff289 DN |
1182 | static void c_parser_omp_construct (c_parser *); |
1183 | static void c_parser_omp_threadprivate (c_parser *); | |
1184 | static void c_parser_omp_barrier (c_parser *); | |
1185 | static void c_parser_omp_flush (c_parser *); | |
a68ab351 | 1186 | static void c_parser_omp_taskwait (c_parser *); |
20906c66 | 1187 | static void c_parser_omp_taskyield (c_parser *); |
27bf414c | 1188 | |
bc4071dd RH |
1189 | enum pragma_context { pragma_external, pragma_stmt, pragma_compound }; |
1190 | static bool c_parser_pragma (c_parser *, enum pragma_context); | |
1191 | ||
27bf414c JM |
1192 | /* These Objective-C parser functions are only ever called when |
1193 | compiling Objective-C. */ | |
c165dca7 | 1194 | static void c_parser_objc_class_definition (c_parser *, tree); |
27bf414c JM |
1195 | static void c_parser_objc_class_instance_variables (c_parser *); |
1196 | static void c_parser_objc_class_declaration (c_parser *); | |
1197 | static void c_parser_objc_alias_declaration (c_parser *); | |
c165dca7 | 1198 | static void c_parser_objc_protocol_definition (c_parser *, tree); |
249a82c4 | 1199 | static bool c_parser_objc_method_type (c_parser *); |
27bf414c JM |
1200 | static void c_parser_objc_method_definition (c_parser *); |
1201 | static void c_parser_objc_methodprotolist (c_parser *); | |
1202 | static void c_parser_objc_methodproto (c_parser *); | |
a04a722b | 1203 | static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *); |
27bf414c JM |
1204 | static tree c_parser_objc_type_name (c_parser *); |
1205 | static tree c_parser_objc_protocol_refs (c_parser *); | |
437c2322 | 1206 | static void c_parser_objc_try_catch_finally_statement (c_parser *); |
27bf414c JM |
1207 | static void c_parser_objc_synchronized_statement (c_parser *); |
1208 | static tree c_parser_objc_selector (c_parser *); | |
1209 | static tree c_parser_objc_selector_arg (c_parser *); | |
1210 | static tree c_parser_objc_receiver (c_parser *); | |
1211 | static tree c_parser_objc_message_args (c_parser *); | |
1212 | static tree c_parser_objc_keywordexpr (c_parser *); | |
f614132b | 1213 | static void c_parser_objc_at_property_declaration (c_parser *); |
da57d1b9 NP |
1214 | static void c_parser_objc_at_synthesize_declaration (c_parser *); |
1215 | static void c_parser_objc_at_dynamic_declaration (c_parser *); | |
668ea4b1 | 1216 | static bool c_parser_objc_diagnose_bad_element_prefix |
c165dca7 | 1217 | (c_parser *, struct c_declspecs *); |
27bf414c | 1218 | |
36536d79 BI |
1219 | static tree c_parser_array_notation (location_t, c_parser *, tree, tree); |
1220 | ||
27bf414c JM |
1221 | /* Parse a translation unit (C90 6.7, C99 6.9). |
1222 | ||
1223 | translation-unit: | |
1224 | external-declarations | |
1225 | ||
1226 | external-declarations: | |
1227 | external-declaration | |
1228 | external-declarations external-declaration | |
1229 | ||
1230 | GNU extensions: | |
1231 | ||
1232 | translation-unit: | |
1233 | empty | |
1234 | */ | |
1235 | ||
1236 | static void | |
1237 | c_parser_translation_unit (c_parser *parser) | |
1238 | { | |
1239 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
1240 | { | |
c1771a20 | 1241 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1242 | "ISO C forbids an empty translation unit"); |
27bf414c JM |
1243 | } |
1244 | else | |
1245 | { | |
1246 | void *obstack_position = obstack_alloc (&parser_obstack, 0); | |
6ec637a4 | 1247 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
1248 | do |
1249 | { | |
1250 | ggc_collect (); | |
1251 | c_parser_external_declaration (parser); | |
1252 | obstack_free (&parser_obstack, obstack_position); | |
1253 | } | |
1254 | while (c_parser_next_token_is_not (parser, CPP_EOF)); | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | /* Parse an external declaration (C90 6.7, C99 6.9). | |
1259 | ||
1260 | external-declaration: | |
1261 | function-definition | |
1262 | declaration | |
1263 | ||
1264 | GNU extensions: | |
1265 | ||
1266 | external-declaration: | |
1267 | asm-definition | |
1268 | ; | |
1269 | __extension__ external-declaration | |
1270 | ||
1271 | Objective-C: | |
1272 | ||
1273 | external-declaration: | |
1274 | objc-class-definition | |
1275 | objc-class-declaration | |
1276 | objc-alias-declaration | |
1277 | objc-protocol-definition | |
1278 | objc-method-definition | |
1279 | @end | |
1280 | */ | |
1281 | ||
1282 | static void | |
1283 | c_parser_external_declaration (c_parser *parser) | |
1284 | { | |
1285 | int ext; | |
1286 | switch (c_parser_peek_token (parser)->type) | |
1287 | { | |
1288 | case CPP_KEYWORD: | |
1289 | switch (c_parser_peek_token (parser)->keyword) | |
1290 | { | |
1291 | case RID_EXTENSION: | |
1292 | ext = disable_extension_diagnostics (); | |
1293 | c_parser_consume_token (parser); | |
1294 | c_parser_external_declaration (parser); | |
1295 | restore_extension_diagnostics (ext); | |
1296 | break; | |
1297 | case RID_ASM: | |
1298 | c_parser_asm_definition (parser); | |
1299 | break; | |
1300 | case RID_AT_INTERFACE: | |
1301 | case RID_AT_IMPLEMENTATION: | |
1302 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1303 | c_parser_objc_class_definition (parser, NULL_TREE); |
27bf414c | 1304 | break; |
49b91f05 | 1305 | case RID_AT_CLASS: |
27bf414c JM |
1306 | gcc_assert (c_dialect_objc ()); |
1307 | c_parser_objc_class_declaration (parser); | |
1308 | break; | |
1309 | case RID_AT_ALIAS: | |
1310 | gcc_assert (c_dialect_objc ()); | |
1311 | c_parser_objc_alias_declaration (parser); | |
1312 | break; | |
1313 | case RID_AT_PROTOCOL: | |
1314 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1315 | c_parser_objc_protocol_definition (parser, NULL_TREE); |
27bf414c | 1316 | break; |
668ea4b1 IS |
1317 | case RID_AT_PROPERTY: |
1318 | gcc_assert (c_dialect_objc ()); | |
f614132b | 1319 | c_parser_objc_at_property_declaration (parser); |
668ea4b1 | 1320 | break; |
da57d1b9 NP |
1321 | case RID_AT_SYNTHESIZE: |
1322 | gcc_assert (c_dialect_objc ()); | |
1323 | c_parser_objc_at_synthesize_declaration (parser); | |
1324 | break; | |
1325 | case RID_AT_DYNAMIC: | |
1326 | gcc_assert (c_dialect_objc ()); | |
1327 | c_parser_objc_at_dynamic_declaration (parser); | |
1328 | break; | |
27bf414c JM |
1329 | case RID_AT_END: |
1330 | gcc_assert (c_dialect_objc ()); | |
1331 | c_parser_consume_token (parser); | |
1332 | objc_finish_implementation (); | |
1333 | break; | |
1334 | default: | |
1335 | goto decl_or_fndef; | |
1336 | } | |
1337 | break; | |
1338 | case CPP_SEMICOLON: | |
c1771a20 | 1339 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1340 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
1341 | c_parser_consume_token (parser); |
1342 | break; | |
bc4071dd | 1343 | case CPP_PRAGMA: |
6ec637a4 | 1344 | mark_valid_location_for_stdc_pragma (true); |
bc4071dd | 1345 | c_parser_pragma (parser, pragma_external); |
6ec637a4 | 1346 | mark_valid_location_for_stdc_pragma (false); |
bc4071dd | 1347 | break; |
27bf414c JM |
1348 | case CPP_PLUS: |
1349 | case CPP_MINUS: | |
1350 | if (c_dialect_objc ()) | |
1351 | { | |
1352 | c_parser_objc_method_definition (parser); | |
1353 | break; | |
1354 | } | |
1355 | /* Else fall through, and yield a syntax error trying to parse | |
1356 | as a declaration or function definition. */ | |
1357 | default: | |
1358 | decl_or_fndef: | |
c165dca7 IS |
1359 | /* A declaration or a function definition (or, in Objective-C, |
1360 | an @interface or @protocol with prefix attributes). We can | |
1361 | only tell which after parsing the declaration specifiers, if | |
1362 | any, and the first declarator. */ | |
f05b9d93 | 1363 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, NULL); |
27bf414c JM |
1364 | break; |
1365 | } | |
1366 | } | |
1367 | ||
1368 | /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99 | |
1369 | 6.7, 6.9.1). If FNDEF_OK is true, a function definition is | |
1370 | accepted; otherwise (old-style parameter declarations) only other | |
32912286 JM |
1371 | declarations are accepted. If STATIC_ASSERT_OK is true, a static |
1372 | assertion is accepted; otherwise (old-style parameter declarations) | |
1373 | it is not. If NESTED is true, we are inside a function or parsing | |
1374 | old-style parameter declarations; any functions encountered are | |
1375 | nested functions and declaration specifiers are required; otherwise | |
1376 | we are at top level and functions are normal functions and | |
1377 | declaration specifiers may be optional. If EMPTY_OK is true, empty | |
1378 | declarations are OK (subject to all other constraints); otherwise | |
1379 | (old-style parameter declarations) they are diagnosed. If | |
1380 | START_ATTR_OK is true, the declaration specifiers may start with | |
1381 | attributes; otherwise they may not. | |
f05b9d93 NP |
1382 | OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed |
1383 | declaration when parsing an Objective-C foreach statement. | |
27bf414c JM |
1384 | |
1385 | declaration: | |
1386 | declaration-specifiers init-declarator-list[opt] ; | |
32912286 | 1387 | static_assert-declaration |
27bf414c JM |
1388 | |
1389 | function-definition: | |
1390 | declaration-specifiers[opt] declarator declaration-list[opt] | |
1391 | compound-statement | |
1392 | ||
1393 | declaration-list: | |
1394 | declaration | |
1395 | declaration-list declaration | |
1396 | ||
1397 | init-declarator-list: | |
1398 | init-declarator | |
1399 | init-declarator-list , init-declarator | |
1400 | ||
1401 | init-declarator: | |
1402 | declarator simple-asm-expr[opt] attributes[opt] | |
1403 | declarator simple-asm-expr[opt] attributes[opt] = initializer | |
1404 | ||
1405 | GNU extensions: | |
1406 | ||
1407 | nested-function-definition: | |
1408 | declaration-specifiers declarator declaration-list[opt] | |
1409 | compound-statement | |
1410 | ||
c165dca7 IS |
1411 | Objective-C: |
1412 | attributes objc-class-definition | |
1413 | attributes objc-category-definition | |
1414 | attributes objc-protocol-definition | |
1415 | ||
27bf414c JM |
1416 | The simple-asm-expr and attributes are GNU extensions. |
1417 | ||
1418 | This function does not handle __extension__; that is handled in its | |
1419 | callers. ??? Following the old parser, __extension__ may start | |
1420 | external declarations, declarations in functions and declarations | |
1421 | at the start of "for" loops, but not old-style parameter | |
1422 | declarations. | |
1423 | ||
1424 | C99 requires declaration specifiers in a function definition; the | |
1425 | absence is diagnosed through the diagnosis of implicit int. In GNU | |
1426 | C we also allow but diagnose declarations without declaration | |
1427 | specifiers, but only at top level (elsewhere they conflict with | |
953ff289 | 1428 | other syntax). |
b8698a0f | 1429 | |
f05b9d93 NP |
1430 | In Objective-C, declarations of the looping variable in a foreach |
1431 | statement are exceptionally terminated by 'in' (for example, 'for | |
1432 | (NSObject *object in array) { ... }'). | |
1433 | ||
953ff289 | 1434 | OpenMP: |
b8698a0f | 1435 | |
953ff289 DN |
1436 | declaration: |
1437 | threadprivate-directive */ | |
27bf414c JM |
1438 | |
1439 | static void | |
32912286 JM |
1440 | c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, |
1441 | bool static_assert_ok, bool empty_ok, | |
f05b9d93 NP |
1442 | bool nested, bool start_attr_ok, |
1443 | tree *objc_foreach_object_declaration) | |
27bf414c JM |
1444 | { |
1445 | struct c_declspecs *specs; | |
1446 | tree prefix_attrs; | |
1447 | tree all_prefix_attrs; | |
1448 | bool diagnosed_no_specs = false; | |
c7412148 | 1449 | location_t here = c_parser_peek_token (parser)->location; |
bc4071dd | 1450 | |
32912286 JM |
1451 | if (static_assert_ok |
1452 | && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) | |
1453 | { | |
1454 | c_parser_static_assert_declaration (parser); | |
1455 | return; | |
1456 | } | |
27bf414c | 1457 | specs = build_null_declspecs (); |
2f413185 PB |
1458 | |
1459 | /* Try to detect an unknown type name when we have "A B" or "A *B". */ | |
1460 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
1461 | && c_parser_peek_token (parser)->id_kind == C_ID_ID | |
1462 | && (c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
1463 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
1464 | && (!nested || !lookup_name (c_parser_peek_token (parser)->value))) | |
1465 | { | |
1466 | error_at (here, "unknown type name %qE", | |
1467 | c_parser_peek_token (parser)->value); | |
1468 | ||
1469 | /* Parse declspecs normally to get a correct pointer type, but avoid | |
a5812bdc PB |
1470 | a further "fails to be a type name" error. Refuse nested functions |
1471 | since it is not how the user likely wants us to recover. */ | |
2f413185 PB |
1472 | c_parser_peek_token (parser)->type = CPP_KEYWORD; |
1473 | c_parser_peek_token (parser)->keyword = RID_VOID; | |
1474 | c_parser_peek_token (parser)->value = error_mark_node; | |
a5812bdc | 1475 | fndef_ok = !nested; |
2f413185 PB |
1476 | } |
1477 | ||
29ce73cb | 1478 | c_parser_declspecs (parser, specs, true, true, start_attr_ok, cla_nonabstract_decl); |
27bf414c JM |
1479 | if (parser->error) |
1480 | { | |
1481 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1482 | return; | |
1483 | } | |
1484 | if (nested && !specs->declspecs_seen_p) | |
1485 | { | |
1486 | c_parser_error (parser, "expected declaration specifiers"); | |
1487 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1488 | return; | |
1489 | } | |
1490 | finish_declspecs (specs); | |
1491 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1492 | { | |
1493 | if (empty_ok) | |
1494 | shadow_tag (specs); | |
1495 | else | |
1496 | { | |
1497 | shadow_tag_warned (specs, 1); | |
509c9d60 | 1498 | pedwarn (here, 0, "empty declaration"); |
27bf414c JM |
1499 | } |
1500 | c_parser_consume_token (parser); | |
1501 | return; | |
1502 | } | |
f725e721 PB |
1503 | |
1504 | /* Provide better error recovery. Note that a type name here is usually | |
1505 | better diagnosed as a redeclaration. */ | |
1506 | if (empty_ok | |
1507 | && specs->typespec_kind == ctsk_tagdef | |
1508 | && c_parser_next_token_starts_declspecs (parser) | |
1509 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
1510 | { | |
1511 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
1512 | parser->error = false; | |
1513 | shadow_tag_warned (specs, 1); | |
1514 | return; | |
1515 | } | |
c165dca7 IS |
1516 | else if (c_dialect_objc ()) |
1517 | { | |
f7e71da5 IS |
1518 | /* Prefix attributes are an error on method decls. */ |
1519 | switch (c_parser_peek_token (parser)->type) | |
1520 | { | |
1521 | case CPP_PLUS: | |
1522 | case CPP_MINUS: | |
1523 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1524 | return; | |
1525 | if (specs->attrs) | |
1526 | { | |
1527 | warning_at (c_parser_peek_token (parser)->location, | |
1528 | OPT_Wattributes, | |
1529 | "prefix attributes are ignored for methods"); | |
1530 | specs->attrs = NULL_TREE; | |
1531 | } | |
1532 | if (fndef_ok) | |
1533 | c_parser_objc_method_definition (parser); | |
1534 | else | |
1535 | c_parser_objc_methodproto (parser); | |
1536 | return; | |
1537 | break; | |
1538 | default: | |
1539 | break; | |
1540 | } | |
c165dca7 IS |
1541 | /* This is where we parse 'attributes @interface ...', |
1542 | 'attributes @implementation ...', 'attributes @protocol ...' | |
1543 | (where attributes could be, for example, __attribute__ | |
1544 | ((deprecated)). | |
1545 | */ | |
1546 | switch (c_parser_peek_token (parser)->keyword) | |
1547 | { | |
1548 | case RID_AT_INTERFACE: | |
1549 | { | |
1550 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1551 | return; | |
1552 | c_parser_objc_class_definition (parser, specs->attrs); | |
1553 | return; | |
1554 | } | |
1555 | break; | |
1556 | case RID_AT_IMPLEMENTATION: | |
1557 | { | |
1558 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1559 | return; | |
1560 | if (specs->attrs) | |
1561 | { | |
1562 | warning_at (c_parser_peek_token (parser)->location, | |
1563 | OPT_Wattributes, | |
1564 | "prefix attributes are ignored for implementations"); | |
1565 | specs->attrs = NULL_TREE; | |
1566 | } | |
1567 | c_parser_objc_class_definition (parser, NULL_TREE); | |
1568 | return; | |
1569 | } | |
1570 | break; | |
1571 | case RID_AT_PROTOCOL: | |
1572 | { | |
1573 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1574 | return; | |
1575 | c_parser_objc_protocol_definition (parser, specs->attrs); | |
1576 | return; | |
1577 | } | |
1578 | break; | |
668ea4b1 IS |
1579 | case RID_AT_ALIAS: |
1580 | case RID_AT_CLASS: | |
1581 | case RID_AT_END: | |
1582 | case RID_AT_PROPERTY: | |
1583 | if (specs->attrs) | |
1584 | { | |
96bbfbac | 1585 | c_parser_error (parser, "unexpected attribute"); |
668ea4b1 IS |
1586 | specs->attrs = NULL; |
1587 | } | |
1588 | break; | |
c165dca7 IS |
1589 | default: |
1590 | break; | |
1591 | } | |
1592 | } | |
1593 | ||
27bf414c JM |
1594 | pending_xref_error (); |
1595 | prefix_attrs = specs->attrs; | |
1596 | all_prefix_attrs = prefix_attrs; | |
1597 | specs->attrs = NULL_TREE; | |
1598 | while (true) | |
1599 | { | |
1600 | struct c_declarator *declarator; | |
1601 | bool dummy = false; | |
575bfb00 | 1602 | timevar_id_t tv; |
27bf414c JM |
1603 | tree fnbody; |
1604 | /* Declaring either one or more declarators (in which case we | |
1605 | should diagnose if there were no declaration specifiers) or a | |
1606 | function definition (in which case the diagnostic for | |
1607 | implicit int suffices). */ | |
9e5b2115 PB |
1608 | declarator = c_parser_declarator (parser, |
1609 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
1610 | C_DTR_NORMAL, &dummy); |
1611 | if (declarator == NULL) | |
1612 | { | |
1613 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1614 | return; | |
1615 | } | |
1616 | if (c_parser_next_token_is (parser, CPP_EQ) | |
1617 | || c_parser_next_token_is (parser, CPP_COMMA) | |
1618 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
1619 | || c_parser_next_token_is_keyword (parser, RID_ASM) | |
f05b9d93 NP |
1620 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE) |
1621 | || c_parser_next_token_is_keyword (parser, RID_IN)) | |
27bf414c JM |
1622 | { |
1623 | tree asm_name = NULL_TREE; | |
1624 | tree postfix_attrs = NULL_TREE; | |
1625 | if (!diagnosed_no_specs && !specs->declspecs_seen_p) | |
1626 | { | |
1627 | diagnosed_no_specs = true; | |
509c9d60 | 1628 | pedwarn (here, 0, "data definition has no type or storage class"); |
27bf414c JM |
1629 | } |
1630 | /* Having seen a data definition, there cannot now be a | |
1631 | function definition. */ | |
1632 | fndef_ok = false; | |
1633 | if (c_parser_next_token_is_keyword (parser, RID_ASM)) | |
1634 | asm_name = c_parser_simple_asm_expr (parser); | |
1635 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1636 | postfix_attrs = c_parser_attributes (parser); | |
1637 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
1638 | { | |
1639 | tree d; | |
1640 | struct c_expr init; | |
c2255bc4 | 1641 | location_t init_loc; |
27bf414c JM |
1642 | c_parser_consume_token (parser); |
1643 | /* The declaration of the variable is in effect while | |
1644 | its initializer is parsed. */ | |
1645 | d = start_decl (declarator, specs, true, | |
1646 | chainon (postfix_attrs, all_prefix_attrs)); | |
1647 | if (!d) | |
1648 | d = error_mark_node; | |
1649 | start_init (d, asm_name, global_bindings_p ()); | |
c2255bc4 | 1650 | init_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
1651 | init = c_parser_initializer (parser); |
1652 | finish_init (); | |
1653 | if (d != error_mark_node) | |
1654 | { | |
1655 | maybe_warn_string_init (TREE_TYPE (d), init); | |
c2255bc4 AH |
1656 | finish_decl (d, init_loc, init.value, |
1657 | init.original_type, asm_name); | |
27bf414c JM |
1658 | } |
1659 | } | |
1660 | else | |
1661 | { | |
1662 | tree d = start_decl (declarator, specs, false, | |
1663 | chainon (postfix_attrs, | |
1664 | all_prefix_attrs)); | |
1665 | if (d) | |
c2255bc4 | 1666 | finish_decl (d, UNKNOWN_LOCATION, NULL_TREE, |
f05b9d93 NP |
1667 | NULL_TREE, asm_name); |
1668 | ||
1669 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
1670 | { | |
1671 | if (d) | |
1672 | *objc_foreach_object_declaration = d; | |
1673 | else | |
1674 | *objc_foreach_object_declaration = error_mark_node; | |
1675 | } | |
27bf414c JM |
1676 | } |
1677 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
1678 | { | |
1679 | c_parser_consume_token (parser); | |
1680 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1681 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
1682 | prefix_attrs); | |
1683 | else | |
1684 | all_prefix_attrs = prefix_attrs; | |
1685 | continue; | |
1686 | } | |
1687 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1688 | { | |
1689 | c_parser_consume_token (parser); | |
1690 | return; | |
1691 | } | |
f05b9d93 NP |
1692 | else if (c_parser_next_token_is_keyword (parser, RID_IN)) |
1693 | { | |
1694 | /* This can only happen in Objective-C: we found the | |
1695 | 'in' that terminates the declaration inside an | |
1696 | Objective-C foreach statement. Do not consume the | |
1697 | token, so that the caller can use it to determine | |
1698 | that this indeed is a foreach context. */ | |
1699 | return; | |
1700 | } | |
27bf414c JM |
1701 | else |
1702 | { | |
1703 | c_parser_error (parser, "expected %<,%> or %<;%>"); | |
1704 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1705 | return; | |
1706 | } | |
1707 | } | |
1708 | else if (!fndef_ok) | |
1709 | { | |
1710 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, " | |
1711 | "%<asm%> or %<__attribute__%>"); | |
1712 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1713 | return; | |
1714 | } | |
1715 | /* Function definition (nested or otherwise). */ | |
1716 | if (nested) | |
1717 | { | |
c1771a20 | 1718 | pedwarn (here, OPT_Wpedantic, "ISO C forbids nested functions"); |
d2784db4 | 1719 | c_push_function_context (); |
27bf414c JM |
1720 | } |
1721 | if (!start_function (specs, declarator, all_prefix_attrs)) | |
1722 | { | |
1723 | /* This can appear in many cases looking nothing like a | |
1724 | function definition, so we don't give a more specific | |
1725 | error suggesting there was one. */ | |
1726 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> " | |
1727 | "or %<__attribute__%>"); | |
1728 | if (nested) | |
d2784db4 | 1729 | c_pop_function_context (); |
27bf414c JM |
1730 | break; |
1731 | } | |
575bfb00 LC |
1732 | |
1733 | if (DECL_DECLARED_INLINE_P (current_function_decl)) | |
1734 | tv = TV_PARSE_INLINE; | |
1735 | else | |
1736 | tv = TV_PARSE_FUNC; | |
1737 | timevar_push (tv); | |
1738 | ||
27bf414c JM |
1739 | /* Parse old-style parameter declarations. ??? Attributes are |
1740 | not allowed to start declaration specifiers here because of a | |
1741 | syntax conflict between a function declaration with attribute | |
1742 | suffix and a function definition with an attribute prefix on | |
1743 | first old-style parameter declaration. Following the old | |
1744 | parser, they are not accepted on subsequent old-style | |
1745 | parameter declarations either. However, there is no | |
1746 | ambiguity after the first declaration, nor indeed on the | |
1747 | first as long as we don't allow postfix attributes after a | |
1748 | declarator with a nonempty identifier list in a definition; | |
1749 | and postfix attributes have never been accepted here in | |
1750 | function definitions either. */ | |
1751 | while (c_parser_next_token_is_not (parser, CPP_EOF) | |
1752 | && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE)) | |
32912286 | 1753 | c_parser_declaration_or_fndef (parser, false, false, false, |
f05b9d93 | 1754 | true, false, NULL); |
27bf414c | 1755 | store_parm_decls (); |
1751ecd6 AH |
1756 | DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus |
1757 | = c_parser_peek_token (parser)->location; | |
27bf414c | 1758 | fnbody = c_parser_compound_statement (parser); |
25c22937 BI |
1759 | if (flag_enable_cilkplus && contains_array_notation_expr (fnbody)) |
1760 | fnbody = expand_array_notation_exprs (fnbody); | |
27bf414c JM |
1761 | if (nested) |
1762 | { | |
1763 | tree decl = current_function_decl; | |
9f62cb92 JJ |
1764 | /* Mark nested functions as needing static-chain initially. |
1765 | lower_nested_functions will recompute it but the | |
1766 | DECL_STATIC_CHAIN flag is also used before that happens, | |
1767 | by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */ | |
1768 | DECL_STATIC_CHAIN (decl) = 1; | |
27bf414c JM |
1769 | add_stmt (fnbody); |
1770 | finish_function (); | |
d2784db4 | 1771 | c_pop_function_context (); |
c2255bc4 | 1772 | add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl)); |
27bf414c JM |
1773 | } |
1774 | else | |
1775 | { | |
1776 | add_stmt (fnbody); | |
1777 | finish_function (); | |
1778 | } | |
575bfb00 LC |
1779 | |
1780 | timevar_pop (tv); | |
27bf414c JM |
1781 | break; |
1782 | } | |
1783 | } | |
1784 | ||
1785 | /* Parse an asm-definition (asm() outside a function body). This is a | |
1786 | GNU extension. | |
1787 | ||
1788 | asm-definition: | |
1789 | simple-asm-expr ; | |
1790 | */ | |
1791 | ||
1792 | static void | |
1793 | c_parser_asm_definition (c_parser *parser) | |
1794 | { | |
1795 | tree asm_str = c_parser_simple_asm_expr (parser); | |
27bf414c | 1796 | if (asm_str) |
65d630d4 | 1797 | add_asm_node (asm_str); |
27bf414c JM |
1798 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
1799 | } | |
1800 | ||
48b0b196 | 1801 | /* Parse a static assertion (C11 6.7.10). |
32912286 JM |
1802 | |
1803 | static_assert-declaration: | |
1804 | static_assert-declaration-no-semi ; | |
1805 | */ | |
1806 | ||
1807 | static void | |
1808 | c_parser_static_assert_declaration (c_parser *parser) | |
1809 | { | |
1810 | c_parser_static_assert_declaration_no_semi (parser); | |
1811 | if (parser->error | |
1812 | || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
1813 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1814 | } | |
1815 | ||
48b0b196 | 1816 | /* Parse a static assertion (C11 6.7.10), without the trailing |
32912286 JM |
1817 | semicolon. |
1818 | ||
1819 | static_assert-declaration-no-semi: | |
1820 | _Static_assert ( constant-expression , string-literal ) | |
1821 | */ | |
1822 | ||
1823 | static void | |
1824 | c_parser_static_assert_declaration_no_semi (c_parser *parser) | |
1825 | { | |
1826 | location_t assert_loc, value_loc; | |
1827 | tree value; | |
1828 | tree string; | |
1829 | ||
1830 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)); | |
1831 | assert_loc = c_parser_peek_token (parser)->location; | |
48b0b196 | 1832 | if (!flag_isoc11) |
32912286 JM |
1833 | { |
1834 | if (flag_isoc99) | |
c1771a20 | 1835 | pedwarn (assert_loc, OPT_Wpedantic, |
32912286 JM |
1836 | "ISO C99 does not support %<_Static_assert%>"); |
1837 | else | |
c1771a20 | 1838 | pedwarn (assert_loc, OPT_Wpedantic, |
32912286 JM |
1839 | "ISO C90 does not support %<_Static_assert%>"); |
1840 | } | |
1841 | c_parser_consume_token (parser); | |
1842 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
1843 | return; | |
1844 | value_loc = c_parser_peek_token (parser)->location; | |
1845 | value = c_parser_expr_no_commas (parser, NULL).value; | |
1846 | parser->lex_untranslated_string = true; | |
1847 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
1848 | { | |
1849 | parser->lex_untranslated_string = false; | |
1850 | return; | |
1851 | } | |
1852 | switch (c_parser_peek_token (parser)->type) | |
1853 | { | |
1854 | case CPP_STRING: | |
1855 | case CPP_STRING16: | |
1856 | case CPP_STRING32: | |
1857 | case CPP_WSTRING: | |
1858 | case CPP_UTF8STRING: | |
1859 | string = c_parser_peek_token (parser)->value; | |
1860 | c_parser_consume_token (parser); | |
1861 | parser->lex_untranslated_string = false; | |
1862 | break; | |
1863 | default: | |
1864 | c_parser_error (parser, "expected string literal"); | |
1865 | parser->lex_untranslated_string = false; | |
1866 | return; | |
1867 | } | |
1868 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
1869 | ||
1870 | if (!INTEGRAL_TYPE_P (TREE_TYPE (value))) | |
1871 | { | |
1872 | error_at (value_loc, "expression in static assertion is not an integer"); | |
1873 | return; | |
1874 | } | |
1875 | if (TREE_CODE (value) != INTEGER_CST) | |
1876 | { | |
1877 | value = c_fully_fold (value, false, NULL); | |
1878 | if (TREE_CODE (value) == INTEGER_CST) | |
c1771a20 | 1879 | pedwarn (value_loc, OPT_Wpedantic, "expression in static assertion " |
32912286 JM |
1880 | "is not an integer constant expression"); |
1881 | } | |
1882 | if (TREE_CODE (value) != INTEGER_CST) | |
1883 | { | |
1884 | error_at (value_loc, "expression in static assertion is not constant"); | |
1885 | return; | |
1886 | } | |
1887 | constant_expression_warning (value); | |
1888 | if (integer_zerop (value)) | |
1889 | error_at (assert_loc, "static assertion failed: %E", string); | |
1890 | } | |
1891 | ||
27bf414c JM |
1892 | /* Parse some declaration specifiers (possibly none) (C90 6.5, C99 |
1893 | 6.7), adding them to SPECS (which may already include some). | |
1894 | Storage class specifiers are accepted iff SCSPEC_OK; type | |
1895 | specifiers are accepted iff TYPESPEC_OK; attributes are accepted at | |
1896 | the start iff START_ATTR_OK. | |
1897 | ||
1898 | declaration-specifiers: | |
1899 | storage-class-specifier declaration-specifiers[opt] | |
1900 | type-specifier declaration-specifiers[opt] | |
1901 | type-qualifier declaration-specifiers[opt] | |
1902 | function-specifier declaration-specifiers[opt] | |
d19fa6b5 | 1903 | alignment-specifier declaration-specifiers[opt] |
27bf414c JM |
1904 | |
1905 | Function specifiers (inline) are from C99, and are currently | |
d19fa6b5 | 1906 | handled as storage class specifiers, as is __thread. Alignment |
48b0b196 | 1907 | specifiers are from C11. |
27bf414c JM |
1908 | |
1909 | C90 6.5.1, C99 6.7.1: | |
1910 | storage-class-specifier: | |
1911 | typedef | |
1912 | extern | |
1913 | static | |
1914 | auto | |
1915 | register | |
1916 | ||
1917 | C99 6.7.4: | |
1918 | function-specifier: | |
1919 | inline | |
c4b3a0a0 JM |
1920 | _Noreturn |
1921 | ||
48b0b196 | 1922 | (_Noreturn is new in C11.) |
27bf414c JM |
1923 | |
1924 | C90 6.5.2, C99 6.7.2: | |
1925 | type-specifier: | |
1926 | void | |
1927 | char | |
1928 | short | |
1929 | int | |
1930 | long | |
1931 | float | |
1932 | double | |
1933 | signed | |
1934 | unsigned | |
1935 | _Bool | |
1936 | _Complex | |
1937 | [_Imaginary removed in C99 TC2] | |
1938 | struct-or-union-specifier | |
1939 | enum-specifier | |
1940 | typedef-name | |
1941 | ||
1942 | (_Bool and _Complex are new in C99.) | |
1943 | ||
1944 | C90 6.5.3, C99 6.7.3: | |
1945 | ||
1946 | type-qualifier: | |
1947 | const | |
1948 | restrict | |
1949 | volatile | |
36c5e70a | 1950 | address-space-qualifier |
27bf414c JM |
1951 | |
1952 | (restrict is new in C99.) | |
1953 | ||
1954 | GNU extensions: | |
1955 | ||
1956 | declaration-specifiers: | |
1957 | attributes declaration-specifiers[opt] | |
1958 | ||
36c5e70a BE |
1959 | type-qualifier: |
1960 | address-space | |
1961 | ||
1962 | address-space: | |
1963 | identifier recognized by the target | |
1964 | ||
27bf414c JM |
1965 | storage-class-specifier: |
1966 | __thread | |
1967 | ||
1968 | type-specifier: | |
1969 | typeof-specifier | |
a6766312 | 1970 | __int128 |
9a8ce21f JG |
1971 | _Decimal32 |
1972 | _Decimal64 | |
1973 | _Decimal128 | |
ab22c1fa CF |
1974 | _Fract |
1975 | _Accum | |
1976 | _Sat | |
1977 | ||
1978 | (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037: | |
1979 | http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf) | |
27bf414c JM |
1980 | |
1981 | Objective-C: | |
1982 | ||
1983 | type-specifier: | |
1984 | class-name objc-protocol-refs[opt] | |
1985 | typedef-name objc-protocol-refs | |
1986 | objc-protocol-refs | |
1987 | */ | |
1988 | ||
1989 | static void | |
1990 | c_parser_declspecs (c_parser *parser, struct c_declspecs *specs, | |
29ce73cb PB |
1991 | bool scspec_ok, bool typespec_ok, bool start_attr_ok, |
1992 | enum c_lookahead_kind la) | |
27bf414c JM |
1993 | { |
1994 | bool attrs_ok = start_attr_ok; | |
9e5b2115 | 1995 | bool seen_type = specs->typespec_kind != ctsk_none; |
29ce73cb PB |
1996 | |
1997 | if (!typespec_ok) | |
1998 | gcc_assert (la == cla_prefer_id); | |
1999 | ||
2000 | while (c_parser_next_token_is (parser, CPP_NAME) | |
27bf414c JM |
2001 | || c_parser_next_token_is (parser, CPP_KEYWORD) |
2002 | || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS))) | |
2003 | { | |
2004 | struct c_typespec t; | |
2005 | tree attrs; | |
d19fa6b5 | 2006 | tree align; |
dc491a25 | 2007 | location_t loc = c_parser_peek_token (parser)->location; |
f725e721 | 2008 | |
29ce73cb PB |
2009 | /* If we cannot accept a type, exit if the next token must start |
2010 | one. Also, if we already have seen a tagged definition, | |
2011 | a typename would be an error anyway and likely the user | |
2012 | has simply forgotten a semicolon, so we exit. */ | |
2013 | if ((!typespec_ok || specs->typespec_kind == ctsk_tagdef) | |
2014 | && c_parser_next_tokens_start_typename (parser, la) | |
2015 | && !c_parser_next_token_is_qualifier (parser)) | |
2016 | break; | |
f725e721 | 2017 | |
27bf414c JM |
2018 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2019 | { | |
0b2c4be5 DS |
2020 | c_token *name_token = c_parser_peek_token (parser); |
2021 | tree value = name_token->value; | |
2022 | c_id_kind kind = name_token->id_kind; | |
36c5e70a BE |
2023 | |
2024 | if (kind == C_ID_ADDRSPACE) | |
2025 | { | |
2026 | addr_space_t as | |
0b2c4be5 DS |
2027 | = name_token->keyword - RID_FIRST_ADDR_SPACE; |
2028 | declspecs_add_addrspace (name_token->location, specs, as); | |
36c5e70a BE |
2029 | c_parser_consume_token (parser); |
2030 | attrs_ok = true; | |
2031 | continue; | |
2032 | } | |
2033 | ||
29ce73cb PB |
2034 | gcc_assert (!c_parser_next_token_is_qualifier (parser)); |
2035 | ||
2036 | /* If we cannot accept a type, and the next token must start one, | |
2037 | exit. Do the same if we already have seen a tagged definition, | |
2038 | since it would be an error anyway and likely the user has simply | |
2039 | forgotten a semicolon. */ | |
2040 | if (seen_type || !c_parser_next_tokens_start_typename (parser, la)) | |
2041 | break; | |
2042 | ||
2043 | /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or | |
2044 | a C_ID_CLASSNAME. */ | |
27bf414c JM |
2045 | c_parser_consume_token (parser); |
2046 | seen_type = true; | |
2047 | attrs_ok = true; | |
29ce73cb PB |
2048 | if (kind == C_ID_ID) |
2049 | { | |
2050 | error ("unknown type name %qE", value); | |
2051 | t.kind = ctsk_typedef; | |
2052 | t.spec = error_mark_node; | |
2053 | } | |
2054 | else if (kind == C_ID_TYPENAME | |
2055 | && (!c_dialect_objc () | |
2056 | || c_parser_next_token_is_not (parser, CPP_LESS))) | |
27bf414c JM |
2057 | { |
2058 | t.kind = ctsk_typedef; | |
2059 | /* For a typedef name, record the meaning, not the name. | |
2060 | In case of 'foo foo, bar;'. */ | |
2061 | t.spec = lookup_name (value); | |
2062 | } | |
2063 | else | |
2064 | { | |
2065 | tree proto = NULL_TREE; | |
2066 | gcc_assert (c_dialect_objc ()); | |
2067 | t.kind = ctsk_objc; | |
2068 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2069 | proto = c_parser_objc_protocol_refs (parser); | |
2070 | t.spec = objc_get_protocol_qualified_type (value, proto); | |
2071 | } | |
29ce73cb PB |
2072 | t.expr = NULL_TREE; |
2073 | t.expr_const_operands = true; | |
0b2c4be5 | 2074 | declspecs_add_type (name_token->location, specs, t); |
27bf414c JM |
2075 | continue; |
2076 | } | |
2077 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2078 | { | |
2079 | /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - | |
2080 | nisse@lysator.liu.se. */ | |
2081 | tree proto; | |
2082 | gcc_assert (c_dialect_objc ()); | |
2083 | if (!typespec_ok || seen_type) | |
2084 | break; | |
2085 | proto = c_parser_objc_protocol_refs (parser); | |
2086 | t.kind = ctsk_objc; | |
2087 | t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto); | |
928c19bb JM |
2088 | t.expr = NULL_TREE; |
2089 | t.expr_const_operands = true; | |
dc491a25 | 2090 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2091 | continue; |
2092 | } | |
2093 | gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD)); | |
2094 | switch (c_parser_peek_token (parser)->keyword) | |
2095 | { | |
2096 | case RID_STATIC: | |
2097 | case RID_EXTERN: | |
2098 | case RID_REGISTER: | |
2099 | case RID_TYPEDEF: | |
2100 | case RID_INLINE: | |
bbceee64 | 2101 | case RID_NORETURN: |
27bf414c JM |
2102 | case RID_AUTO: |
2103 | case RID_THREAD: | |
2104 | if (!scspec_ok) | |
2105 | goto out; | |
2106 | attrs_ok = true; | |
bbceee64 | 2107 | /* TODO: Distinguish between function specifiers (inline, noreturn) |
27bf414c JM |
2108 | and storage class specifiers, either here or in |
2109 | declspecs_add_scspec. */ | |
0b2c4be5 DS |
2110 | declspecs_add_scspec (loc, specs, |
2111 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
2112 | c_parser_consume_token (parser); |
2113 | break; | |
2114 | case RID_UNSIGNED: | |
2115 | case RID_LONG: | |
a6766312 | 2116 | case RID_INT128: |
27bf414c JM |
2117 | case RID_SHORT: |
2118 | case RID_SIGNED: | |
2119 | case RID_COMPLEX: | |
2120 | case RID_INT: | |
2121 | case RID_CHAR: | |
2122 | case RID_FLOAT: | |
2123 | case RID_DOUBLE: | |
2124 | case RID_VOID: | |
9a8ce21f JG |
2125 | case RID_DFLOAT32: |
2126 | case RID_DFLOAT64: | |
2127 | case RID_DFLOAT128: | |
27bf414c | 2128 | case RID_BOOL: |
ab22c1fa CF |
2129 | case RID_FRACT: |
2130 | case RID_ACCUM: | |
2131 | case RID_SAT: | |
27bf414c JM |
2132 | if (!typespec_ok) |
2133 | goto out; | |
2134 | attrs_ok = true; | |
2135 | seen_type = true; | |
0bacb8c7 TT |
2136 | if (c_dialect_objc ()) |
2137 | parser->objc_need_raw_identifier = true; | |
27bf414c JM |
2138 | t.kind = ctsk_resword; |
2139 | t.spec = c_parser_peek_token (parser)->value; | |
928c19bb JM |
2140 | t.expr = NULL_TREE; |
2141 | t.expr_const_operands = true; | |
dc491a25 | 2142 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2143 | c_parser_consume_token (parser); |
2144 | break; | |
2145 | case RID_ENUM: | |
2146 | if (!typespec_ok) | |
2147 | goto out; | |
2148 | attrs_ok = true; | |
2149 | seen_type = true; | |
2150 | t = c_parser_enum_specifier (parser); | |
dc491a25 | 2151 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2152 | break; |
2153 | case RID_STRUCT: | |
2154 | case RID_UNION: | |
2155 | if (!typespec_ok) | |
2156 | goto out; | |
2157 | attrs_ok = true; | |
2158 | seen_type = true; | |
2159 | t = c_parser_struct_or_union_specifier (parser); | |
dab71827 | 2160 | invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec); |
dc491a25 | 2161 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2162 | break; |
2163 | case RID_TYPEOF: | |
2164 | /* ??? The old parser rejected typeof after other type | |
2165 | specifiers, but is a syntax error the best way of | |
2166 | handling this? */ | |
2167 | if (!typespec_ok || seen_type) | |
2168 | goto out; | |
2169 | attrs_ok = true; | |
2170 | seen_type = true; | |
2171 | t = c_parser_typeof_specifier (parser); | |
dc491a25 | 2172 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2173 | break; |
2174 | case RID_CONST: | |
2175 | case RID_VOLATILE: | |
2176 | case RID_RESTRICT: | |
2177 | attrs_ok = true; | |
0b2c4be5 | 2178 | declspecs_add_qual (loc, specs, c_parser_peek_token (parser)->value); |
27bf414c JM |
2179 | c_parser_consume_token (parser); |
2180 | break; | |
2181 | case RID_ATTRIBUTE: | |
2182 | if (!attrs_ok) | |
2183 | goto out; | |
2184 | attrs = c_parser_attributes (parser); | |
0b2c4be5 | 2185 | declspecs_add_attrs (loc, specs, attrs); |
27bf414c | 2186 | break; |
d19fa6b5 JM |
2187 | case RID_ALIGNAS: |
2188 | align = c_parser_alignas_specifier (parser); | |
0b2c4be5 | 2189 | declspecs_add_alignas (loc, specs, align); |
d19fa6b5 | 2190 | break; |
27bf414c JM |
2191 | default: |
2192 | goto out; | |
2193 | } | |
2194 | } | |
2195 | out: ; | |
2196 | } | |
2197 | ||
2198 | /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2). | |
2199 | ||
2200 | enum-specifier: | |
2201 | enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt] | |
2202 | enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt] | |
2203 | enum attributes[opt] identifier | |
2204 | ||
2205 | The form with trailing comma is new in C99. The forms with | |
2206 | attributes are GNU extensions. In GNU C, we accept any expression | |
2207 | without commas in the syntax (assignment expressions, not just | |
2208 | conditional expressions); assignment expressions will be diagnosed | |
2209 | as non-constant. | |
2210 | ||
2211 | enumerator-list: | |
2212 | enumerator | |
2213 | enumerator-list , enumerator | |
2214 | ||
2215 | enumerator: | |
2216 | enumeration-constant | |
2217 | enumeration-constant = constant-expression | |
2218 | */ | |
2219 | ||
2220 | static struct c_typespec | |
2221 | c_parser_enum_specifier (c_parser *parser) | |
2222 | { | |
2223 | struct c_typespec ret; | |
2224 | tree attrs; | |
2225 | tree ident = NULL_TREE; | |
24b97832 | 2226 | location_t enum_loc; |
922f2908 | 2227 | location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c | 2228 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM)); |
24b97832 | 2229 | enum_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2230 | c_parser_consume_token (parser); |
2231 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2232 | enum_loc = c_parser_peek_token (parser)->location; |
5af28c74 TT |
2233 | /* Set the location in case we create a decl now. */ |
2234 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
27bf414c JM |
2235 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2236 | { | |
2237 | ident = c_parser_peek_token (parser)->value; | |
c7412148 | 2238 | ident_loc = c_parser_peek_token (parser)->location; |
24b97832 | 2239 | enum_loc = ident_loc; |
27bf414c JM |
2240 | c_parser_consume_token (parser); |
2241 | } | |
2242 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2243 | { | |
2244 | /* Parse an enum definition. */ | |
7114359f | 2245 | struct c_enum_contents the_enum; |
575bfb00 | 2246 | tree type; |
27bf414c JM |
2247 | tree postfix_attrs; |
2248 | /* We chain the enumerators in reverse order, then put them in | |
2249 | forward order at the end. */ | |
575bfb00 LC |
2250 | tree values; |
2251 | timevar_push (TV_PARSE_ENUM); | |
2252 | type = start_enum (enum_loc, &the_enum, ident); | |
2253 | values = NULL_TREE; | |
27bf414c JM |
2254 | c_parser_consume_token (parser); |
2255 | while (true) | |
2256 | { | |
2257 | tree enum_id; | |
2258 | tree enum_value; | |
2259 | tree enum_decl; | |
2260 | bool seen_comma; | |
5af28c74 | 2261 | c_token *token; |
922f2908 | 2262 | location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
7370e0da | 2263 | location_t decl_loc, value_loc; |
27bf414c JM |
2264 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
2265 | { | |
2266 | c_parser_error (parser, "expected identifier"); | |
2267 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2268 | values = error_mark_node; | |
2269 | break; | |
2270 | } | |
5af28c74 TT |
2271 | token = c_parser_peek_token (parser); |
2272 | enum_id = token->value; | |
2273 | /* Set the location in case we create a decl now. */ | |
2274 | c_parser_set_source_position_from_token (token); | |
7370e0da | 2275 | decl_loc = value_loc = token->location; |
27bf414c JM |
2276 | c_parser_consume_token (parser); |
2277 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
2278 | { | |
2279 | c_parser_consume_token (parser); | |
85790e66 | 2280 | value_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2281 | enum_value = c_parser_expr_no_commas (parser, NULL).value; |
2282 | } | |
2283 | else | |
2284 | enum_value = NULL_TREE; | |
7370e0da | 2285 | enum_decl = build_enumerator (decl_loc, value_loc, |
c2255bc4 | 2286 | &the_enum, enum_id, enum_value); |
27bf414c JM |
2287 | TREE_CHAIN (enum_decl) = values; |
2288 | values = enum_decl; | |
2289 | seen_comma = false; | |
2290 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2291 | { | |
c7412148 | 2292 | comma_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2293 | seen_comma = true; |
2294 | c_parser_consume_token (parser); | |
2295 | } | |
2296 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2297 | { | |
fcf73884 | 2298 | if (seen_comma && !flag_isoc99) |
c1771a20 | 2299 | pedwarn (comma_loc, OPT_Wpedantic, "comma at end of enumerator list"); |
27bf414c JM |
2300 | c_parser_consume_token (parser); |
2301 | break; | |
2302 | } | |
2303 | if (!seen_comma) | |
2304 | { | |
2305 | c_parser_error (parser, "expected %<,%> or %<}%>"); | |
2306 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2307 | values = error_mark_node; | |
2308 | break; | |
2309 | } | |
2310 | } | |
2311 | postfix_attrs = c_parser_attributes (parser); | |
2312 | ret.spec = finish_enum (type, nreverse (values), | |
2313 | chainon (attrs, postfix_attrs)); | |
2314 | ret.kind = ctsk_tagdef; | |
928c19bb JM |
2315 | ret.expr = NULL_TREE; |
2316 | ret.expr_const_operands = true; | |
575bfb00 | 2317 | timevar_pop (TV_PARSE_ENUM); |
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; | |
27bf414c JM |
2327 | return ret; |
2328 | } | |
c2255bc4 | 2329 | ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident); |
27bf414c JM |
2330 | /* In ISO C, enumerated types can be referred to only if already |
2331 | defined. */ | |
2332 | if (pedantic && !COMPLETE_TYPE_P (ret.spec)) | |
c7412148 TT |
2333 | { |
2334 | gcc_assert (ident); | |
c1771a20 | 2335 | pedwarn (enum_loc, OPT_Wpedantic, |
509c9d60 | 2336 | "ISO C forbids forward references to %<enum%> types"); |
c7412148 | 2337 | } |
27bf414c JM |
2338 | return ret; |
2339 | } | |
2340 | ||
2341 | /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1). | |
2342 | ||
2343 | struct-or-union-specifier: | |
2344 | struct-or-union attributes[opt] identifier[opt] | |
2345 | { struct-contents } attributes[opt] | |
2346 | struct-or-union attributes[opt] identifier | |
2347 | ||
2348 | struct-contents: | |
2349 | struct-declaration-list | |
2350 | ||
2351 | struct-declaration-list: | |
2352 | struct-declaration ; | |
2353 | struct-declaration-list struct-declaration ; | |
2354 | ||
2355 | GNU extensions: | |
2356 | ||
2357 | struct-contents: | |
2358 | empty | |
2359 | struct-declaration | |
2360 | struct-declaration-list struct-declaration | |
2361 | ||
2362 | struct-declaration-list: | |
2363 | struct-declaration-list ; | |
2364 | ; | |
2365 | ||
2366 | (Note that in the syntax here, unlike that in ISO C, the semicolons | |
2367 | are included here rather than in struct-declaration, in order to | |
2368 | describe the syntax with extra semicolons and missing semicolon at | |
2369 | end.) | |
2370 | ||
2371 | Objective-C: | |
2372 | ||
2373 | struct-declaration-list: | |
2374 | @defs ( class-name ) | |
2375 | ||
2376 | (Note this does not include a trailing semicolon, but can be | |
2377 | followed by further declarations, and gets a pedwarn-if-pedantic | |
2378 | when followed by a semicolon.) */ | |
2379 | ||
2380 | static struct c_typespec | |
2381 | c_parser_struct_or_union_specifier (c_parser *parser) | |
2382 | { | |
2383 | struct c_typespec ret; | |
2384 | tree attrs; | |
2385 | tree ident = NULL_TREE; | |
24b97832 ILT |
2386 | location_t struct_loc; |
2387 | location_t ident_loc = UNKNOWN_LOCATION; | |
27bf414c JM |
2388 | enum tree_code code; |
2389 | switch (c_parser_peek_token (parser)->keyword) | |
2390 | { | |
2391 | case RID_STRUCT: | |
2392 | code = RECORD_TYPE; | |
2393 | break; | |
2394 | case RID_UNION: | |
2395 | code = UNION_TYPE; | |
2396 | break; | |
2397 | default: | |
2398 | gcc_unreachable (); | |
2399 | } | |
24b97832 | 2400 | struct_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2401 | c_parser_consume_token (parser); |
2402 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2403 | |
5af28c74 TT |
2404 | /* Set the location in case we create a decl now. */ |
2405 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
c2255bc4 | 2406 | |
27bf414c JM |
2407 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2408 | { | |
2409 | ident = c_parser_peek_token (parser)->value; | |
24b97832 ILT |
2410 | ident_loc = c_parser_peek_token (parser)->location; |
2411 | struct_loc = ident_loc; | |
27bf414c JM |
2412 | c_parser_consume_token (parser); |
2413 | } | |
2414 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2415 | { | |
2416 | /* Parse a struct or union definition. Start the scope of the | |
2417 | tag before parsing components. */ | |
dc491a25 ILT |
2418 | struct c_struct_parse_info *struct_info; |
2419 | tree type = start_struct (struct_loc, code, ident, &struct_info); | |
27bf414c JM |
2420 | tree postfix_attrs; |
2421 | /* We chain the components in reverse order, then put them in | |
2422 | forward order at the end. Each struct-declaration may | |
2423 | declare multiple components (comma-separated), so we must use | |
2424 | chainon to join them, although when parsing each | |
2425 | struct-declaration we can use TREE_CHAIN directly. | |
2426 | ||
2427 | The theory behind all this is that there will be more | |
2428 | semicolon separated fields than comma separated fields, and | |
2429 | so we'll be minimizing the number of node traversals required | |
2430 | by chainon. */ | |
575bfb00 LC |
2431 | tree contents; |
2432 | timevar_push (TV_PARSE_STRUCT); | |
2433 | contents = NULL_TREE; | |
27bf414c JM |
2434 | c_parser_consume_token (parser); |
2435 | /* Handle the Objective-C @defs construct, | |
2436 | e.g. foo(sizeof(struct{ @defs(ClassName) }));. */ | |
2437 | if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS)) | |
2438 | { | |
2439 | tree name; | |
2440 | gcc_assert (c_dialect_objc ()); | |
2441 | c_parser_consume_token (parser); | |
2442 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2443 | goto end_at_defs; | |
2444 | if (c_parser_next_token_is (parser, CPP_NAME) | |
2445 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME) | |
2446 | { | |
2447 | name = c_parser_peek_token (parser)->value; | |
2448 | c_parser_consume_token (parser); | |
2449 | } | |
2450 | else | |
2451 | { | |
2452 | c_parser_error (parser, "expected class name"); | |
2453 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
2454 | goto end_at_defs; | |
2455 | } | |
2456 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2457 | "expected %<)%>"); | |
2458 | contents = nreverse (objc_get_class_ivars (name)); | |
2459 | } | |
2460 | end_at_defs: | |
2461 | /* Parse the struct-declarations and semicolons. Problems with | |
2462 | semicolons are diagnosed here; empty structures are diagnosed | |
2463 | elsewhere. */ | |
2464 | while (true) | |
2465 | { | |
2466 | tree decls; | |
2467 | /* Parse any stray semicolon. */ | |
2468 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2469 | { | |
c1771a20 | 2470 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 2471 | "extra semicolon in struct or union specified"); |
27bf414c JM |
2472 | c_parser_consume_token (parser); |
2473 | continue; | |
2474 | } | |
2475 | /* Stop if at the end of the struct or union contents. */ | |
2476 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2477 | { | |
2478 | c_parser_consume_token (parser); | |
2479 | break; | |
2480 | } | |
bc4071dd RH |
2481 | /* Accept #pragmas at struct scope. */ |
2482 | if (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
2483 | { | |
2484 | c_parser_pragma (parser, pragma_external); | |
2485 | continue; | |
2486 | } | |
27bf414c JM |
2487 | /* Parse some comma-separated declarations, but not the |
2488 | trailing semicolon if any. */ | |
2489 | decls = c_parser_struct_declaration (parser); | |
2490 | contents = chainon (decls, contents); | |
2491 | /* If no semicolon follows, either we have a parse error or | |
2492 | are at the end of the struct or union and should | |
2493 | pedwarn. */ | |
2494 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2495 | c_parser_consume_token (parser); | |
2496 | else | |
2497 | { | |
2498 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
b8698a0f | 2499 | pedwarn (c_parser_peek_token (parser)->location, 0, |
509c9d60 | 2500 | "no semicolon at end of struct or union"); |
f725e721 PB |
2501 | else if (parser->error |
2502 | || !c_parser_next_token_starts_declspecs (parser)) | |
27bf414c JM |
2503 | { |
2504 | c_parser_error (parser, "expected %<;%>"); | |
2505 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2506 | break; | |
2507 | } | |
f725e721 PB |
2508 | |
2509 | /* If we come here, we have already emitted an error | |
2510 | for an expected `;', identifier or `(', and we also | |
2511 | recovered already. Go on with the next field. */ | |
27bf414c JM |
2512 | } |
2513 | } | |
2514 | postfix_attrs = c_parser_attributes (parser); | |
c2255bc4 | 2515 | ret.spec = finish_struct (struct_loc, type, nreverse (contents), |
dc491a25 | 2516 | chainon (attrs, postfix_attrs), struct_info); |
27bf414c | 2517 | ret.kind = ctsk_tagdef; |
928c19bb JM |
2518 | ret.expr = NULL_TREE; |
2519 | ret.expr_const_operands = true; | |
575bfb00 | 2520 | timevar_pop (TV_PARSE_STRUCT); |
27bf414c JM |
2521 | return ret; |
2522 | } | |
2523 | else if (!ident) | |
2524 | { | |
2525 | c_parser_error (parser, "expected %<{%>"); | |
2526 | ret.spec = error_mark_node; | |
2527 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2528 | ret.expr = NULL_TREE; |
2529 | ret.expr_const_operands = true; | |
67c2939d | 2530 | return ret; |
27bf414c | 2531 | } |
c2255bc4 | 2532 | ret = parser_xref_tag (ident_loc, code, ident); |
27bf414c JM |
2533 | return ret; |
2534 | } | |
2535 | ||
2536 | /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without* | |
2537 | the trailing semicolon. | |
2538 | ||
2539 | struct-declaration: | |
2540 | specifier-qualifier-list struct-declarator-list | |
32912286 | 2541 | static_assert-declaration-no-semi |
27bf414c JM |
2542 | |
2543 | specifier-qualifier-list: | |
2544 | type-specifier specifier-qualifier-list[opt] | |
2545 | type-qualifier specifier-qualifier-list[opt] | |
2546 | attributes specifier-qualifier-list[opt] | |
2547 | ||
2548 | struct-declarator-list: | |
2549 | struct-declarator | |
2550 | struct-declarator-list , attributes[opt] struct-declarator | |
2551 | ||
2552 | struct-declarator: | |
2553 | declarator attributes[opt] | |
2554 | declarator[opt] : constant-expression attributes[opt] | |
2555 | ||
2556 | GNU extensions: | |
2557 | ||
2558 | struct-declaration: | |
2559 | __extension__ struct-declaration | |
2560 | specifier-qualifier-list | |
2561 | ||
2562 | Unlike the ISO C syntax, semicolons are handled elsewhere. The use | |
2563 | of attributes where shown is a GNU extension. In GNU C, we accept | |
2564 | any expression without commas in the syntax (assignment | |
2565 | expressions, not just conditional expressions); assignment | |
2566 | expressions will be diagnosed as non-constant. */ | |
2567 | ||
2568 | static tree | |
2569 | c_parser_struct_declaration (c_parser *parser) | |
2570 | { | |
2571 | struct c_declspecs *specs; | |
2572 | tree prefix_attrs; | |
2573 | tree all_prefix_attrs; | |
2574 | tree decls; | |
c7412148 | 2575 | location_t decl_loc; |
27bf414c JM |
2576 | if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) |
2577 | { | |
2578 | int ext; | |
2579 | tree decl; | |
2580 | ext = disable_extension_diagnostics (); | |
2581 | c_parser_consume_token (parser); | |
2582 | decl = c_parser_struct_declaration (parser); | |
2583 | restore_extension_diagnostics (ext); | |
2584 | return decl; | |
2585 | } | |
32912286 JM |
2586 | if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) |
2587 | { | |
2588 | c_parser_static_assert_declaration_no_semi (parser); | |
2589 | return NULL_TREE; | |
2590 | } | |
27bf414c | 2591 | specs = build_null_declspecs (); |
c7412148 | 2592 | decl_loc = c_parser_peek_token (parser)->location; |
29ce73cb | 2593 | c_parser_declspecs (parser, specs, false, true, true, cla_nonabstract_decl); |
27bf414c | 2594 | if (parser->error) |
67c2939d | 2595 | return NULL_TREE; |
27bf414c JM |
2596 | if (!specs->declspecs_seen_p) |
2597 | { | |
2598 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
2599 | return NULL_TREE; | |
2600 | } | |
2601 | finish_declspecs (specs); | |
b8cbdff5 JM |
2602 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) |
2603 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
27bf414c JM |
2604 | { |
2605 | tree ret; | |
9e5b2115 | 2606 | if (specs->typespec_kind == ctsk_none) |
27bf414c | 2607 | { |
c1771a20 | 2608 | pedwarn (decl_loc, OPT_Wpedantic, |
509c9d60 | 2609 | "ISO C forbids member declarations with no members"); |
27bf414c JM |
2610 | shadow_tag_warned (specs, pedantic); |
2611 | ret = NULL_TREE; | |
2612 | } | |
2613 | else | |
2614 | { | |
2615 | /* Support for unnamed structs or unions as members of | |
2616 | structs or unions (which is [a] useful and [b] supports | |
2617 | MS P-SDK). */ | |
b9baeecd | 2618 | tree attrs = NULL; |
3d10ed6c AH |
2619 | |
2620 | ret = grokfield (c_parser_peek_token (parser)->location, | |
2621 | build_id_declarator (NULL_TREE), specs, | |
b9baeecd | 2622 | NULL_TREE, &attrs); |
0ad7e054 RS |
2623 | if (ret) |
2624 | decl_attributes (&ret, attrs, 0); | |
27bf414c JM |
2625 | } |
2626 | return ret; | |
2627 | } | |
f725e721 PB |
2628 | |
2629 | /* Provide better error recovery. Note that a type name here is valid, | |
2630 | and will be treated as a field name. */ | |
2631 | if (specs->typespec_kind == ctsk_tagdef | |
2632 | && TREE_CODE (specs->type) != ENUMERAL_TYPE | |
2633 | && c_parser_next_token_starts_declspecs (parser) | |
2634 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
2635 | { | |
2636 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
2637 | parser->error = false; | |
2638 | return NULL_TREE; | |
2639 | } | |
2640 | ||
27bf414c JM |
2641 | pending_xref_error (); |
2642 | prefix_attrs = specs->attrs; | |
2643 | all_prefix_attrs = prefix_attrs; | |
2644 | specs->attrs = NULL_TREE; | |
2645 | decls = NULL_TREE; | |
2646 | while (true) | |
2647 | { | |
2648 | /* Declaring one or more declarators or un-named bit-fields. */ | |
2649 | struct c_declarator *declarator; | |
2650 | bool dummy = false; | |
2651 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2652 | declarator = build_id_declarator (NULL_TREE); | |
2653 | else | |
9e5b2115 PB |
2654 | declarator = c_parser_declarator (parser, |
2655 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
2656 | C_DTR_NORMAL, &dummy); |
2657 | if (declarator == NULL) | |
2658 | { | |
2659 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2660 | break; | |
2661 | } | |
2662 | if (c_parser_next_token_is (parser, CPP_COLON) | |
2663 | || c_parser_next_token_is (parser, CPP_COMMA) | |
2664 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2665 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE) | |
2666 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2667 | { | |
2668 | tree postfix_attrs = NULL_TREE; | |
2669 | tree width = NULL_TREE; | |
2670 | tree d; | |
2671 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2672 | { | |
2673 | c_parser_consume_token (parser); | |
2674 | width = c_parser_expr_no_commas (parser, NULL).value; | |
2675 | } | |
2676 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2677 | postfix_attrs = c_parser_attributes (parser); | |
3d10ed6c AH |
2678 | d = grokfield (c_parser_peek_token (parser)->location, |
2679 | declarator, specs, width, &all_prefix_attrs); | |
27bf414c JM |
2680 | decl_attributes (&d, chainon (postfix_attrs, |
2681 | all_prefix_attrs), 0); | |
910ad8de | 2682 | DECL_CHAIN (d) = decls; |
27bf414c JM |
2683 | decls = d; |
2684 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2685 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
2686 | prefix_attrs); | |
2687 | else | |
2688 | all_prefix_attrs = prefix_attrs; | |
2689 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2690 | c_parser_consume_token (parser); | |
2691 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2692 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2693 | { | |
2694 | /* Semicolon consumed in caller. */ | |
2695 | break; | |
2696 | } | |
2697 | else | |
2698 | { | |
2699 | c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>"); | |
2700 | break; | |
2701 | } | |
2702 | } | |
2703 | else | |
2704 | { | |
2705 | c_parser_error (parser, | |
2706 | "expected %<:%>, %<,%>, %<;%>, %<}%> or " | |
2707 | "%<__attribute__%>"); | |
2708 | break; | |
2709 | } | |
2710 | } | |
2711 | return decls; | |
2712 | } | |
2713 | ||
2714 | /* Parse a typeof specifier (a GNU extension). | |
2715 | ||
2716 | typeof-specifier: | |
2717 | typeof ( expression ) | |
2718 | typeof ( type-name ) | |
2719 | */ | |
2720 | ||
2721 | static struct c_typespec | |
2722 | c_parser_typeof_specifier (c_parser *parser) | |
2723 | { | |
2724 | struct c_typespec ret; | |
2725 | ret.kind = ctsk_typeof; | |
2726 | ret.spec = error_mark_node; | |
928c19bb JM |
2727 | ret.expr = NULL_TREE; |
2728 | ret.expr_const_operands = true; | |
27bf414c JM |
2729 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF)); |
2730 | c_parser_consume_token (parser); | |
7d882b83 | 2731 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
2732 | in_typeof++; |
2733 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2734 | { | |
7d882b83 | 2735 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2736 | in_typeof--; |
2737 | return ret; | |
2738 | } | |
29ce73cb | 2739 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) |
27bf414c JM |
2740 | { |
2741 | struct c_type_name *type = c_parser_type_name (parser); | |
7d882b83 | 2742 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2743 | in_typeof--; |
2744 | if (type != NULL) | |
2745 | { | |
928c19bb | 2746 | ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands); |
27bf414c JM |
2747 | pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE)); |
2748 | } | |
2749 | } | |
2750 | else | |
2751 | { | |
52ffd86e | 2752 | bool was_vm; |
c7412148 | 2753 | location_t here = c_parser_peek_token (parser)->location; |
27bf414c | 2754 | struct c_expr expr = c_parser_expression (parser); |
7d882b83 | 2755 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2756 | in_typeof--; |
2757 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
2758 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 2759 | error_at (here, "%<typeof%> applied to a bit-field"); |
ebfbbdc5 | 2760 | mark_exp_read (expr.value); |
27bf414c | 2761 | ret.spec = TREE_TYPE (expr.value); |
52ffd86e | 2762 | was_vm = variably_modified_type_p (ret.spec, NULL_TREE); |
928c19bb JM |
2763 | /* This is returned with the type so that when the type is |
2764 | evaluated, this can be evaluated. */ | |
2765 | if (was_vm) | |
2766 | ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands); | |
52ffd86e | 2767 | pop_maybe_used (was_vm); |
27bf414c JM |
2768 | } |
2769 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2770 | return ret; | |
2771 | } | |
2772 | ||
d19fa6b5 JM |
2773 | /* Parse an alignment-specifier. |
2774 | ||
48b0b196 | 2775 | C11 6.7.5: |
d19fa6b5 JM |
2776 | |
2777 | alignment-specifier: | |
2778 | _Alignas ( type-name ) | |
2779 | _Alignas ( constant-expression ) | |
2780 | */ | |
2781 | ||
2782 | static tree | |
2783 | c_parser_alignas_specifier (c_parser * parser) | |
2784 | { | |
2785 | tree ret = error_mark_node; | |
2786 | location_t loc = c_parser_peek_token (parser)->location; | |
2787 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNAS)); | |
2788 | c_parser_consume_token (parser); | |
48b0b196 | 2789 | if (!flag_isoc11) |
d19fa6b5 JM |
2790 | { |
2791 | if (flag_isoc99) | |
c1771a20 | 2792 | pedwarn (loc, OPT_Wpedantic, |
d19fa6b5 JM |
2793 | "ISO C99 does not support %<_Alignas%>"); |
2794 | else | |
c1771a20 | 2795 | pedwarn (loc, OPT_Wpedantic, |
d19fa6b5 JM |
2796 | "ISO C90 does not support %<_Alignas%>"); |
2797 | } | |
2798 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2799 | return ret; | |
2800 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) | |
2801 | { | |
2802 | struct c_type_name *type = c_parser_type_name (parser); | |
2803 | if (type != NULL) | |
2804 | ret = c_alignof (loc, groktypename (type, NULL, NULL)); | |
2805 | } | |
2806 | else | |
2807 | ret = c_parser_expr_no_commas (parser, NULL).value; | |
2808 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2809 | return ret; | |
2810 | } | |
2811 | ||
27bf414c JM |
2812 | /* Parse a declarator, possibly an abstract declarator (C90 6.5.4, |
2813 | 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may | |
2814 | be redeclared; otherwise it may not. KIND indicates which kind of | |
2815 | declarator is wanted. Returns a valid declarator except in the | |
2816 | case of a syntax error in which case NULL is returned. *SEEN_ID is | |
2817 | set to true if an identifier being declared is seen; this is used | |
2818 | to diagnose bad forms of abstract array declarators and to | |
2819 | determine whether an identifier list is syntactically permitted. | |
2820 | ||
2821 | declarator: | |
2822 | pointer[opt] direct-declarator | |
2823 | ||
2824 | direct-declarator: | |
2825 | identifier | |
2826 | ( attributes[opt] declarator ) | |
2827 | direct-declarator array-declarator | |
2828 | direct-declarator ( parameter-type-list ) | |
2829 | direct-declarator ( identifier-list[opt] ) | |
2830 | ||
2831 | pointer: | |
2832 | * type-qualifier-list[opt] | |
2833 | * type-qualifier-list[opt] pointer | |
2834 | ||
2835 | type-qualifier-list: | |
2836 | type-qualifier | |
2837 | attributes | |
2838 | type-qualifier-list type-qualifier | |
2839 | type-qualifier-list attributes | |
2840 | ||
2841 | parameter-type-list: | |
2842 | parameter-list | |
2843 | parameter-list , ... | |
2844 | ||
2845 | parameter-list: | |
2846 | parameter-declaration | |
2847 | parameter-list , parameter-declaration | |
2848 | ||
2849 | parameter-declaration: | |
2850 | declaration-specifiers declarator attributes[opt] | |
2851 | declaration-specifiers abstract-declarator[opt] attributes[opt] | |
2852 | ||
2853 | identifier-list: | |
2854 | identifier | |
2855 | identifier-list , identifier | |
2856 | ||
2857 | abstract-declarator: | |
2858 | pointer | |
2859 | pointer[opt] direct-abstract-declarator | |
2860 | ||
2861 | direct-abstract-declarator: | |
2862 | ( attributes[opt] abstract-declarator ) | |
2863 | direct-abstract-declarator[opt] array-declarator | |
2864 | direct-abstract-declarator[opt] ( parameter-type-list[opt] ) | |
2865 | ||
2866 | GNU extensions: | |
2867 | ||
2868 | direct-declarator: | |
2869 | direct-declarator ( parameter-forward-declarations | |
2870 | parameter-type-list[opt] ) | |
2871 | ||
2872 | direct-abstract-declarator: | |
c22cacf3 | 2873 | direct-abstract-declarator[opt] ( parameter-forward-declarations |
27bf414c JM |
2874 | parameter-type-list[opt] ) |
2875 | ||
2876 | parameter-forward-declarations: | |
2877 | parameter-list ; | |
2878 | parameter-forward-declarations parameter-list ; | |
2879 | ||
2880 | The uses of attributes shown above are GNU extensions. | |
2881 | ||
2882 | Some forms of array declarator are not included in C99 in the | |
2883 | syntax for abstract declarators; these are disallowed elsewhere. | |
2884 | This may be a defect (DR#289). | |
2885 | ||
2886 | This function also accepts an omitted abstract declarator as being | |
2887 | an abstract declarator, although not part of the formal syntax. */ | |
2888 | ||
2889 | static struct c_declarator * | |
2890 | c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2891 | bool *seen_id) | |
2892 | { | |
2893 | /* Parse any initial pointer part. */ | |
2894 | if (c_parser_next_token_is (parser, CPP_MULT)) | |
2895 | { | |
2896 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
2897 | struct c_declarator *inner; | |
2898 | c_parser_consume_token (parser); | |
29ce73cb | 2899 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
2900 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); |
2901 | if (inner == NULL) | |
2902 | return NULL; | |
2903 | else | |
2904 | return make_pointer_declarator (quals_attrs, inner); | |
2905 | } | |
2906 | /* Now we have a direct declarator, direct abstract declarator or | |
2907 | nothing (which counts as a direct abstract declarator here). */ | |
2908 | return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id); | |
2909 | } | |
2910 | ||
2911 | /* Parse a direct declarator or direct abstract declarator; arguments | |
2912 | as c_parser_declarator. */ | |
2913 | ||
2914 | static struct c_declarator * | |
2915 | c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2916 | bool *seen_id) | |
2917 | { | |
2918 | /* The direct declarator must start with an identifier (possibly | |
2919 | omitted) or a parenthesized declarator (possibly abstract). In | |
2920 | an ordinary declarator, initial parentheses must start a | |
2921 | parenthesized declarator. In an abstract declarator or parameter | |
2922 | declarator, they could start a parenthesized declarator or a | |
2923 | parameter list. To tell which, the open parenthesis and any | |
2924 | following attributes must be read. If a declaration specifier | |
2925 | follows, then it is a parameter list; if the specifier is a | |
2926 | typedef name, there might be an ambiguity about redeclaring it, | |
2927 | which is resolved in the direction of treating it as a typedef | |
2928 | name. If a close parenthesis follows, it is also an empty | |
2929 | parameter list, as the syntax does not permit empty abstract | |
0fa2e4df | 2930 | declarators. Otherwise, it is a parenthesized declarator (in |
27bf414c JM |
2931 | which case the analysis may be repeated inside it, recursively). |
2932 | ||
2933 | ??? There is an ambiguity in a parameter declaration "int | |
2934 | (__attribute__((foo)) x)", where x is not a typedef name: it | |
2935 | could be an abstract declarator for a function, or declare x with | |
2936 | parentheses. The proper resolution of this ambiguity needs | |
2937 | documenting. At present we follow an accident of the old | |
2938 | parser's implementation, whereby the first parameter must have | |
2939 | some declaration specifiers other than just attributes. Thus as | |
0fa2e4df | 2940 | a parameter declaration it is treated as a parenthesized |
27bf414c JM |
2941 | parameter named x, and as an abstract declarator it is |
2942 | rejected. | |
2943 | ||
2944 | ??? Also following the old parser, attributes inside an empty | |
2945 | parameter list are ignored, making it a list not yielding a | |
2946 | prototype, rather than giving an error or making it have one | |
2947 | parameter with implicit type int. | |
2948 | ||
2949 | ??? Also following the old parser, typedef names may be | |
2950 | redeclared in declarators, but not Objective-C class names. */ | |
2951 | ||
2952 | if (kind != C_DTR_ABSTRACT | |
2953 | && c_parser_next_token_is (parser, CPP_NAME) | |
2954 | && ((type_seen_p | |
a6341d57 NP |
2955 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME |
2956 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
2957 | || c_parser_peek_token (parser)->id_kind == C_ID_ID)) |
2958 | { | |
2959 | struct c_declarator *inner | |
2960 | = build_id_declarator (c_parser_peek_token (parser)->value); | |
2961 | *seen_id = true; | |
6037d88d | 2962 | inner->id_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2963 | c_parser_consume_token (parser); |
2964 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2965 | } | |
2966 | ||
2967 | if (kind != C_DTR_NORMAL | |
2968 | && c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
2969 | { | |
2970 | struct c_declarator *inner = build_id_declarator (NULL_TREE); | |
2971 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2972 | } | |
2973 | ||
2974 | /* Either we are at the end of an abstract declarator, or we have | |
2975 | parentheses. */ | |
2976 | ||
2977 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2978 | { | |
2979 | tree attrs; | |
2980 | struct c_declarator *inner; | |
2981 | c_parser_consume_token (parser); | |
2982 | attrs = c_parser_attributes (parser); | |
2983 | if (kind != C_DTR_NORMAL | |
2984 | && (c_parser_next_token_starts_declspecs (parser) | |
2985 | || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))) | |
2986 | { | |
2987 | struct c_arg_info *args | |
2988 | = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL, | |
2989 | attrs); | |
2990 | if (args == NULL) | |
2991 | return NULL; | |
2992 | else | |
2993 | { | |
2994 | inner | |
2995 | = build_function_declarator (args, | |
2996 | build_id_declarator (NULL_TREE)); | |
2997 | return c_parser_direct_declarator_inner (parser, *seen_id, | |
2998 | inner); | |
2999 | } | |
3000 | } | |
3001 | /* A parenthesized declarator. */ | |
3002 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
3003 | if (inner != NULL && attrs != NULL) | |
3004 | inner = build_attrs_declarator (attrs, inner); | |
3005 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3006 | { | |
3007 | c_parser_consume_token (parser); | |
3008 | if (inner == NULL) | |
3009 | return NULL; | |
3010 | else | |
3011 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3012 | } | |
3013 | else | |
3014 | { | |
3015 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3016 | "expected %<)%>"); | |
3017 | return NULL; | |
3018 | } | |
3019 | } | |
3020 | else | |
3021 | { | |
3022 | if (kind == C_DTR_NORMAL) | |
3023 | { | |
3024 | c_parser_error (parser, "expected identifier or %<(%>"); | |
3025 | return NULL; | |
3026 | } | |
3027 | else | |
3028 | return build_id_declarator (NULL_TREE); | |
3029 | } | |
3030 | } | |
3031 | ||
3032 | /* Parse part of a direct declarator or direct abstract declarator, | |
3033 | given that some (in INNER) has already been parsed; ID_PRESENT is | |
3034 | true if an identifier is present, false for an abstract | |
3035 | declarator. */ | |
3036 | ||
3037 | static struct c_declarator * | |
3038 | c_parser_direct_declarator_inner (c_parser *parser, bool id_present, | |
3039 | struct c_declarator *inner) | |
3040 | { | |
3041 | /* Parse a sequence of array declarators and parameter lists. */ | |
3042 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
3043 | { | |
b8698a0f | 3044 | location_t brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3045 | struct c_declarator *declarator; |
3046 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
3047 | bool static_seen; | |
3048 | bool star_seen; | |
3049 | tree dimen; | |
3050 | c_parser_consume_token (parser); | |
29ce73cb | 3051 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
3052 | static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC); |
3053 | if (static_seen) | |
3054 | c_parser_consume_token (parser); | |
3055 | if (static_seen && !quals_attrs->declspecs_seen_p) | |
29ce73cb | 3056 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
3057 | if (!quals_attrs->declspecs_seen_p) |
3058 | quals_attrs = NULL; | |
3059 | /* If "static" is present, there must be an array dimension. | |
3060 | Otherwise, there may be a dimension, "*", or no | |
3061 | dimension. */ | |
3062 | if (static_seen) | |
3063 | { | |
3064 | star_seen = false; | |
3065 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3066 | } | |
3067 | else | |
3068 | { | |
3069 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3070 | { | |
3071 | dimen = NULL_TREE; | |
3072 | star_seen = false; | |
3073 | } | |
36536d79 BI |
3074 | else if (flag_enable_cilkplus |
3075 | && c_parser_next_token_is (parser, CPP_COLON)) | |
3076 | { | |
3077 | dimen = error_mark_node; | |
3078 | star_seen = false; | |
3079 | error_at (c_parser_peek_token (parser)->location, | |
3080 | "array notations cannot be used in declaration"); | |
3081 | c_parser_consume_token (parser); | |
3082 | } | |
27bf414c JM |
3083 | else if (c_parser_next_token_is (parser, CPP_MULT)) |
3084 | { | |
3085 | if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE) | |
3086 | { | |
3087 | dimen = NULL_TREE; | |
3088 | star_seen = true; | |
3089 | c_parser_consume_token (parser); | |
3090 | } | |
3091 | else | |
3092 | { | |
3093 | star_seen = false; | |
3094 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3095 | } | |
3096 | } | |
3097 | else | |
3098 | { | |
3099 | star_seen = false; | |
3100 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3101 | } | |
3102 | } | |
3103 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3104 | c_parser_consume_token (parser); | |
36536d79 BI |
3105 | else if (flag_enable_cilkplus |
3106 | && c_parser_next_token_is (parser, CPP_COLON)) | |
3107 | { | |
3108 | error_at (c_parser_peek_token (parser)->location, | |
3109 | "array notations cannot be used in declaration"); | |
3110 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
3111 | return NULL; | |
3112 | } | |
27bf414c JM |
3113 | else |
3114 | { | |
3115 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3116 | "expected %<]%>"); | |
3117 | return NULL; | |
3118 | } | |
97e3c923 JJ |
3119 | if (dimen) |
3120 | mark_exp_read (dimen); | |
c2255bc4 AH |
3121 | declarator = build_array_declarator (brace_loc, dimen, quals_attrs, |
3122 | static_seen, star_seen); | |
52ffd86e MS |
3123 | if (declarator == NULL) |
3124 | return NULL; | |
6ac0194d | 3125 | inner = set_array_declarator_inner (declarator, inner); |
27bf414c JM |
3126 | return c_parser_direct_declarator_inner (parser, id_present, inner); |
3127 | } | |
3128 | else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3129 | { | |
3130 | tree attrs; | |
3131 | struct c_arg_info *args; | |
3132 | c_parser_consume_token (parser); | |
3133 | attrs = c_parser_attributes (parser); | |
3134 | args = c_parser_parms_declarator (parser, id_present, attrs); | |
3135 | if (args == NULL) | |
3136 | return NULL; | |
3137 | else | |
3138 | { | |
3139 | inner = build_function_declarator (args, inner); | |
3140 | return c_parser_direct_declarator_inner (parser, id_present, inner); | |
3141 | } | |
3142 | } | |
3143 | return inner; | |
3144 | } | |
3145 | ||
3146 | /* Parse a parameter list or identifier list, including the closing | |
3147 | parenthesis but not the opening one. ATTRS are the attributes at | |
3148 | the start of the list. ID_LIST_OK is true if an identifier list is | |
3149 | acceptable; such a list must not have attributes at the start. */ | |
3150 | ||
3151 | static struct c_arg_info * | |
3152 | c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs) | |
3153 | { | |
3154 | push_scope (); | |
3155 | declare_parm_level (); | |
3156 | /* If the list starts with an identifier, it is an identifier list. | |
3157 | Otherwise, it is either a prototype list or an empty list. */ | |
3158 | if (id_list_ok | |
3159 | && !attrs | |
3160 | && c_parser_next_token_is (parser, CPP_NAME) | |
29ce73cb PB |
3161 | && c_parser_peek_token (parser)->id_kind == C_ID_ID |
3162 | ||
3163 | /* Look ahead to detect typos in type names. */ | |
3164 | && c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
3165 | && c_parser_peek_2nd_token (parser)->type != CPP_MULT | |
3166 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
3167 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_SQUARE) | |
27bf414c | 3168 | { |
7fa3585c | 3169 | tree list = NULL_TREE, *nextp = &list; |
27bf414c JM |
3170 | while (c_parser_next_token_is (parser, CPP_NAME) |
3171 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
3172 | { | |
7fa3585c GK |
3173 | *nextp = build_tree_list (NULL_TREE, |
3174 | c_parser_peek_token (parser)->value); | |
3175 | nextp = & TREE_CHAIN (*nextp); | |
27bf414c JM |
3176 | c_parser_consume_token (parser); |
3177 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
3178 | break; | |
3179 | c_parser_consume_token (parser); | |
3180 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3181 | { | |
3182 | c_parser_error (parser, "expected identifier"); | |
3183 | break; | |
3184 | } | |
3185 | } | |
3186 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3187 | { | |
b3399d18 | 3188 | struct c_arg_info *ret = build_arg_info (); |
27bf414c | 3189 | ret->types = list; |
27bf414c JM |
3190 | c_parser_consume_token (parser); |
3191 | pop_scope (); | |
3192 | return ret; | |
3193 | } | |
3194 | else | |
3195 | { | |
3196 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3197 | "expected %<)%>"); | |
3198 | pop_scope (); | |
3199 | return NULL; | |
3200 | } | |
3201 | } | |
3202 | else | |
3203 | { | |
a04a722b JM |
3204 | struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs, |
3205 | NULL); | |
27bf414c JM |
3206 | pop_scope (); |
3207 | return ret; | |
3208 | } | |
3209 | } | |
3210 | ||
3211 | /* Parse a parameter list (possibly empty), including the closing | |
3212 | parenthesis but not the opening one. ATTRS are the attributes at | |
a04a722b JM |
3213 | the start of the list. EXPR is NULL or an expression that needs to |
3214 | be evaluated for the side effects of array size expressions in the | |
3215 | parameters. */ | |
27bf414c JM |
3216 | |
3217 | static struct c_arg_info * | |
a04a722b | 3218 | c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr) |
27bf414c | 3219 | { |
09a1e889 | 3220 | bool bad_parm = false; |
a04a722b | 3221 | |
27bf414c JM |
3222 | /* ??? Following the old parser, forward parameter declarations may |
3223 | use abstract declarators, and if no real parameter declarations | |
3224 | follow the forward declarations then this is not diagnosed. Also | |
3225 | note as above that attributes are ignored as the only contents of | |
3226 | the parentheses, or as the only contents after forward | |
3227 | declarations. */ | |
3228 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3229 | { | |
b3399d18 | 3230 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
3231 | c_parser_consume_token (parser); |
3232 | return ret; | |
3233 | } | |
3234 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3235 | { | |
b3399d18 | 3236 | struct c_arg_info *ret = build_arg_info (); |
6637388f TG |
3237 | |
3238 | if (flag_allow_parameterless_variadic_functions) | |
3239 | { | |
3240 | /* F (...) is allowed. */ | |
3241 | ret->types = NULL_TREE; | |
3242 | } | |
3243 | else | |
3244 | { | |
3245 | /* Suppress -Wold-style-definition for this case. */ | |
3246 | ret->types = error_mark_node; | |
3247 | error_at (c_parser_peek_token (parser)->location, | |
3248 | "ISO C requires a named argument before %<...%>"); | |
3249 | } | |
27bf414c JM |
3250 | c_parser_consume_token (parser); |
3251 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3252 | { | |
3253 | c_parser_consume_token (parser); | |
3254 | return ret; | |
3255 | } | |
3256 | else | |
3257 | { | |
3258 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3259 | "expected %<)%>"); | |
3260 | return NULL; | |
3261 | } | |
3262 | } | |
3263 | /* Nonempty list of parameters, either terminated with semicolon | |
3264 | (forward declarations; recurse) or with close parenthesis (normal | |
3265 | function) or with ", ... )" (variadic function). */ | |
3266 | while (true) | |
3267 | { | |
3268 | /* Parse a parameter. */ | |
3269 | struct c_parm *parm = c_parser_parameter_declaration (parser, attrs); | |
3270 | attrs = NULL_TREE; | |
09a1e889 SZ |
3271 | if (parm == NULL) |
3272 | bad_parm = true; | |
3273 | else | |
a04a722b | 3274 | push_parm_decl (parm, &expr); |
27bf414c JM |
3275 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3276 | { | |
3277 | tree new_attrs; | |
3278 | c_parser_consume_token (parser); | |
91d975b8 | 3279 | mark_forward_parm_decls (); |
27bf414c | 3280 | new_attrs = c_parser_attributes (parser); |
a04a722b | 3281 | return c_parser_parms_list_declarator (parser, new_attrs, expr); |
27bf414c JM |
3282 | } |
3283 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3284 | { | |
3285 | c_parser_consume_token (parser); | |
09a1e889 | 3286 | if (bad_parm) |
a04a722b | 3287 | return NULL; |
09a1e889 | 3288 | else |
a04a722b | 3289 | return get_parm_info (false, expr); |
27bf414c JM |
3290 | } |
3291 | if (!c_parser_require (parser, CPP_COMMA, | |
3292 | "expected %<;%>, %<,%> or %<)%>")) | |
3293 | { | |
3294 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3295 | return NULL; | |
3296 | } | |
3297 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3298 | { | |
3299 | c_parser_consume_token (parser); | |
3300 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3301 | { | |
3302 | c_parser_consume_token (parser); | |
09a1e889 | 3303 | if (bad_parm) |
a04a722b | 3304 | return NULL; |
09a1e889 | 3305 | else |
a04a722b | 3306 | return get_parm_info (true, expr); |
27bf414c JM |
3307 | } |
3308 | else | |
3309 | { | |
3310 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3311 | "expected %<)%>"); | |
3312 | return NULL; | |
3313 | } | |
3314 | } | |
3315 | } | |
3316 | } | |
3317 | ||
3318 | /* Parse a parameter declaration. ATTRS are the attributes at the | |
3319 | start of the declaration if it is the first parameter. */ | |
3320 | ||
3321 | static struct c_parm * | |
3322 | c_parser_parameter_declaration (c_parser *parser, tree attrs) | |
3323 | { | |
3324 | struct c_declspecs *specs; | |
3325 | struct c_declarator *declarator; | |
3326 | tree prefix_attrs; | |
3327 | tree postfix_attrs = NULL_TREE; | |
3328 | bool dummy = false; | |
51a1aacf TG |
3329 | |
3330 | /* Accept #pragmas between parameter declarations. */ | |
3331 | while (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
3332 | c_parser_pragma (parser, pragma_external); | |
3333 | ||
27bf414c JM |
3334 | if (!c_parser_next_token_starts_declspecs (parser)) |
3335 | { | |
09a1e889 SZ |
3336 | c_token *token = c_parser_peek_token (parser); |
3337 | if (parser->error) | |
3338 | return NULL; | |
3339 | c_parser_set_source_position_from_token (token); | |
29ce73cb | 3340 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
09a1e889 SZ |
3341 | { |
3342 | error ("unknown type name %qE", token->value); | |
3343 | parser->error = true; | |
3344 | } | |
27bf414c JM |
3345 | /* ??? In some Objective-C cases '...' isn't applicable so there |
3346 | should be a different message. */ | |
09a1e889 SZ |
3347 | else |
3348 | c_parser_error (parser, | |
3349 | "expected declaration specifiers or %<...%>"); | |
27bf414c JM |
3350 | c_parser_skip_to_end_of_parameter (parser); |
3351 | return NULL; | |
3352 | } | |
3353 | specs = build_null_declspecs (); | |
3354 | if (attrs) | |
3355 | { | |
0b2c4be5 | 3356 | declspecs_add_attrs (input_location, specs, attrs); |
27bf414c JM |
3357 | attrs = NULL_TREE; |
3358 | } | |
29ce73cb | 3359 | c_parser_declspecs (parser, specs, true, true, true, cla_nonabstract_decl); |
27bf414c JM |
3360 | finish_declspecs (specs); |
3361 | pending_xref_error (); | |
3362 | prefix_attrs = specs->attrs; | |
3363 | specs->attrs = NULL_TREE; | |
9e5b2115 PB |
3364 | declarator = c_parser_declarator (parser, |
3365 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3366 | C_DTR_PARM, &dummy); |
3367 | if (declarator == NULL) | |
3368 | { | |
3369 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
3370 | return NULL; | |
3371 | } | |
3372 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3373 | postfix_attrs = c_parser_attributes (parser); | |
3374 | return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs), | |
3375 | declarator); | |
3376 | } | |
3377 | ||
3378 | /* Parse a string literal in an asm expression. It should not be | |
3379 | translated, and wide string literals are an error although | |
3380 | permitted by the syntax. This is a GNU extension. | |
3381 | ||
3382 | asm-string-literal: | |
3383 | string-literal | |
3384 | ||
3385 | ??? At present, following the old parser, the caller needs to have | |
46c2514e TT |
3386 | set lex_untranslated_string to 1. It would be better to follow the |
3387 | C++ parser rather than using this kludge. */ | |
27bf414c JM |
3388 | |
3389 | static tree | |
3390 | c_parser_asm_string_literal (c_parser *parser) | |
3391 | { | |
3392 | tree str; | |
87f9e23d TT |
3393 | int save_flag = warn_overlength_strings; |
3394 | warn_overlength_strings = 0; | |
27bf414c JM |
3395 | if (c_parser_next_token_is (parser, CPP_STRING)) |
3396 | { | |
3397 | str = c_parser_peek_token (parser)->value; | |
3398 | c_parser_consume_token (parser); | |
3399 | } | |
3400 | else if (c_parser_next_token_is (parser, CPP_WSTRING)) | |
3401 | { | |
3ba09659 AH |
3402 | error_at (c_parser_peek_token (parser)->location, |
3403 | "wide string literal in %<asm%>"); | |
27bf414c JM |
3404 | str = build_string (1, ""); |
3405 | c_parser_consume_token (parser); | |
3406 | } | |
3407 | else | |
3408 | { | |
3409 | c_parser_error (parser, "expected string literal"); | |
3410 | str = NULL_TREE; | |
3411 | } | |
87f9e23d | 3412 | warn_overlength_strings = save_flag; |
27bf414c JM |
3413 | return str; |
3414 | } | |
3415 | ||
3416 | /* Parse a simple asm expression. This is used in restricted | |
3417 | contexts, where a full expression with inputs and outputs does not | |
3418 | make sense. This is a GNU extension. | |
3419 | ||
3420 | simple-asm-expr: | |
3421 | asm ( asm-string-literal ) | |
3422 | */ | |
3423 | ||
3424 | static tree | |
3425 | c_parser_simple_asm_expr (c_parser *parser) | |
3426 | { | |
3427 | tree str; | |
3428 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); | |
3429 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3430 | lex_untranslated_string kludge. */ |
3431 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3432 | c_parser_consume_token (parser); |
3433 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3434 | { | |
46c2514e | 3435 | parser->lex_untranslated_string = false; |
27bf414c JM |
3436 | return NULL_TREE; |
3437 | } | |
3438 | str = c_parser_asm_string_literal (parser); | |
46c2514e | 3439 | parser->lex_untranslated_string = false; |
27bf414c JM |
3440 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
3441 | { | |
3442 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3443 | return NULL_TREE; | |
3444 | } | |
3445 | return str; | |
3446 | } | |
3447 | ||
0a35513e AH |
3448 | static tree |
3449 | c_parser_attribute_any_word (c_parser *parser) | |
3450 | { | |
3451 | tree attr_name = NULL_TREE; | |
3452 | ||
3453 | if (c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3454 | { | |
3455 | /* ??? See comment above about what keywords are accepted here. */ | |
3456 | bool ok; | |
3457 | switch (c_parser_peek_token (parser)->keyword) | |
3458 | { | |
3459 | case RID_STATIC: | |
3460 | case RID_UNSIGNED: | |
3461 | case RID_LONG: | |
3462 | case RID_INT128: | |
3463 | case RID_CONST: | |
3464 | case RID_EXTERN: | |
3465 | case RID_REGISTER: | |
3466 | case RID_TYPEDEF: | |
3467 | case RID_SHORT: | |
3468 | case RID_INLINE: | |
3469 | case RID_NORETURN: | |
3470 | case RID_VOLATILE: | |
3471 | case RID_SIGNED: | |
3472 | case RID_AUTO: | |
3473 | case RID_RESTRICT: | |
3474 | case RID_COMPLEX: | |
3475 | case RID_THREAD: | |
3476 | case RID_INT: | |
3477 | case RID_CHAR: | |
3478 | case RID_FLOAT: | |
3479 | case RID_DOUBLE: | |
3480 | case RID_VOID: | |
3481 | case RID_DFLOAT32: | |
3482 | case RID_DFLOAT64: | |
3483 | case RID_DFLOAT128: | |
3484 | case RID_BOOL: | |
3485 | case RID_FRACT: | |
3486 | case RID_ACCUM: | |
3487 | case RID_SAT: | |
3488 | case RID_TRANSACTION_ATOMIC: | |
3489 | case RID_TRANSACTION_CANCEL: | |
3490 | ok = true; | |
3491 | break; | |
3492 | default: | |
3493 | ok = false; | |
3494 | break; | |
3495 | } | |
3496 | if (!ok) | |
3497 | return NULL_TREE; | |
3498 | ||
3499 | /* Accept __attribute__((__const)) as __attribute__((const)) etc. */ | |
3500 | attr_name = ridpointers[(int) c_parser_peek_token (parser)->keyword]; | |
3501 | } | |
3502 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
3503 | attr_name = c_parser_peek_token (parser)->value; | |
3504 | ||
3505 | return attr_name; | |
3506 | } | |
3507 | ||
27bf414c JM |
3508 | /* Parse (possibly empty) attributes. This is a GNU extension. |
3509 | ||
3510 | attributes: | |
3511 | empty | |
3512 | attributes attribute | |
3513 | ||
3514 | attribute: | |
3515 | __attribute__ ( ( attribute-list ) ) | |
3516 | ||
3517 | attribute-list: | |
3518 | attrib | |
3519 | attribute_list , attrib | |
3520 | ||
3521 | attrib: | |
3522 | empty | |
3523 | any-word | |
3524 | any-word ( identifier ) | |
3525 | any-word ( identifier , nonempty-expr-list ) | |
3526 | any-word ( expr-list ) | |
3527 | ||
3528 | where the "identifier" must not be declared as a type, and | |
3529 | "any-word" may be any identifier (including one declared as a | |
3530 | type), a reserved word storage class specifier, type specifier or | |
3531 | type qualifier. ??? This still leaves out most reserved keywords | |
3532 | (following the old parser), shouldn't we include them, and why not | |
3533 | allow identifiers declared as types to start the arguments? */ | |
3534 | ||
3535 | static tree | |
3536 | c_parser_attributes (c_parser *parser) | |
3537 | { | |
3538 | tree attrs = NULL_TREE; | |
3539 | while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3540 | { | |
3541 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3542 | lex_untranslated_string kludge. */ |
3543 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3544 | c_parser_consume_token (parser); |
3545 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3546 | { | |
46c2514e | 3547 | parser->lex_untranslated_string = false; |
27bf414c JM |
3548 | return attrs; |
3549 | } | |
3550 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3551 | { | |
46c2514e | 3552 | parser->lex_untranslated_string = false; |
27bf414c JM |
3553 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
3554 | return attrs; | |
3555 | } | |
3556 | /* Parse the attribute list. */ | |
3557 | while (c_parser_next_token_is (parser, CPP_COMMA) | |
3558 | || c_parser_next_token_is (parser, CPP_NAME) | |
3559 | || c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3560 | { | |
3561 | tree attr, attr_name, attr_args; | |
9771b263 | 3562 | vec<tree, va_gc> *expr_list; |
27bf414c JM |
3563 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
3564 | { | |
3565 | c_parser_consume_token (parser); | |
3566 | continue; | |
3567 | } | |
0a35513e AH |
3568 | |
3569 | attr_name = c_parser_attribute_any_word (parser); | |
3570 | if (attr_name == NULL) | |
3571 | break; | |
27bf414c JM |
3572 | c_parser_consume_token (parser); |
3573 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) | |
3574 | { | |
3575 | attr = build_tree_list (attr_name, NULL_TREE); | |
3576 | attrs = chainon (attrs, attr); | |
3577 | continue; | |
3578 | } | |
3579 | c_parser_consume_token (parser); | |
3580 | /* Parse the attribute contents. If they start with an | |
3581 | identifier which is followed by a comma or close | |
3582 | parenthesis, then the arguments start with that | |
91ebb981 IS |
3583 | identifier; otherwise they are an expression list. |
3584 | In objective-c the identifier may be a classname. */ | |
27bf414c | 3585 | if (c_parser_next_token_is (parser, CPP_NAME) |
91ebb981 IS |
3586 | && (c_parser_peek_token (parser)->id_kind == C_ID_ID |
3587 | || (c_dialect_objc () | |
3588 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3589 | && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA) |
3590 | || (c_parser_peek_2nd_token (parser)->type | |
3591 | == CPP_CLOSE_PAREN))) | |
3592 | { | |
3593 | tree arg1 = c_parser_peek_token (parser)->value; | |
3594 | c_parser_consume_token (parser); | |
3595 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3596 | attr_args = build_tree_list (NULL_TREE, arg1); | |
3597 | else | |
3598 | { | |
bbbbb16a | 3599 | tree tree_list; |
27bf414c | 3600 | c_parser_consume_token (parser); |
1a4049e7 | 3601 | expr_list = c_parser_expr_list (parser, false, true, |
3a785c97 | 3602 | NULL, NULL, NULL); |
c166b898 | 3603 | tree_list = build_tree_list_vec (expr_list); |
bbbbb16a | 3604 | attr_args = tree_cons (NULL_TREE, arg1, tree_list); |
c166b898 | 3605 | release_tree_vector (expr_list); |
27bf414c JM |
3606 | } |
3607 | } | |
3608 | else | |
3609 | { | |
3610 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3611 | attr_args = NULL_TREE; | |
3612 | else | |
bbbbb16a | 3613 | { |
1a4049e7 | 3614 | expr_list = c_parser_expr_list (parser, false, true, |
3a785c97 | 3615 | NULL, NULL, NULL); |
c166b898 ILT |
3616 | attr_args = build_tree_list_vec (expr_list); |
3617 | release_tree_vector (expr_list); | |
bbbbb16a | 3618 | } |
27bf414c JM |
3619 | } |
3620 | attr = build_tree_list (attr_name, attr_args); | |
3621 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3622 | c_parser_consume_token (parser); | |
3623 | else | |
3624 | { | |
46c2514e | 3625 | parser->lex_untranslated_string = false; |
27bf414c JM |
3626 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3627 | "expected %<)%>"); | |
3628 | return attrs; | |
3629 | } | |
3630 | attrs = chainon (attrs, attr); | |
3631 | } | |
3632 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3633 | c_parser_consume_token (parser); | |
3634 | else | |
3635 | { | |
46c2514e | 3636 | parser->lex_untranslated_string = false; |
27bf414c JM |
3637 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3638 | "expected %<)%>"); | |
3639 | return attrs; | |
3640 | } | |
3641 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3642 | c_parser_consume_token (parser); | |
3643 | else | |
3644 | { | |
46c2514e | 3645 | parser->lex_untranslated_string = false; |
27bf414c JM |
3646 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3647 | "expected %<)%>"); | |
3648 | return attrs; | |
3649 | } | |
46c2514e | 3650 | parser->lex_untranslated_string = false; |
27bf414c JM |
3651 | } |
3652 | return attrs; | |
3653 | } | |
3654 | ||
3655 | /* Parse a type name (C90 6.5.5, C99 6.7.6). | |
3656 | ||
3657 | type-name: | |
3658 | specifier-qualifier-list abstract-declarator[opt] | |
3659 | */ | |
3660 | ||
3661 | static struct c_type_name * | |
3662 | c_parser_type_name (c_parser *parser) | |
3663 | { | |
3664 | struct c_declspecs *specs = build_null_declspecs (); | |
3665 | struct c_declarator *declarator; | |
3666 | struct c_type_name *ret; | |
3667 | bool dummy = false; | |
29ce73cb | 3668 | c_parser_declspecs (parser, specs, false, true, true, cla_prefer_type); |
27bf414c JM |
3669 | if (!specs->declspecs_seen_p) |
3670 | { | |
3671 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
3672 | return NULL; | |
3673 | } | |
29ce73cb PB |
3674 | if (specs->type != error_mark_node) |
3675 | { | |
3676 | pending_xref_error (); | |
3677 | finish_declspecs (specs); | |
3678 | } | |
9e5b2115 PB |
3679 | declarator = c_parser_declarator (parser, |
3680 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3681 | C_DTR_ABSTRACT, &dummy); |
3682 | if (declarator == NULL) | |
3683 | return NULL; | |
3684 | ret = XOBNEW (&parser_obstack, struct c_type_name); | |
3685 | ret->specs = specs; | |
3686 | ret->declarator = declarator; | |
3687 | return ret; | |
3688 | } | |
3689 | ||
3690 | /* Parse an initializer (C90 6.5.7, C99 6.7.8). | |
3691 | ||
3692 | initializer: | |
3693 | assignment-expression | |
3694 | { initializer-list } | |
3695 | { initializer-list , } | |
3696 | ||
3697 | initializer-list: | |
3698 | designation[opt] initializer | |
3699 | initializer-list , designation[opt] initializer | |
3700 | ||
3701 | designation: | |
3702 | designator-list = | |
3703 | ||
3704 | designator-list: | |
3705 | designator | |
3706 | designator-list designator | |
3707 | ||
3708 | designator: | |
3709 | array-designator | |
3710 | . identifier | |
3711 | ||
3712 | array-designator: | |
3713 | [ constant-expression ] | |
3714 | ||
3715 | GNU extensions: | |
3716 | ||
3717 | initializer: | |
3718 | { } | |
3719 | ||
3720 | designation: | |
3721 | array-designator | |
3722 | identifier : | |
3723 | ||
3724 | array-designator: | |
3725 | [ constant-expression ... constant-expression ] | |
3726 | ||
3727 | Any expression without commas is accepted in the syntax for the | |
3728 | constant-expressions, with non-constant expressions rejected later. | |
3729 | ||
3730 | This function is only used for top-level initializers; for nested | |
3731 | ones, see c_parser_initval. */ | |
3732 | ||
3733 | static struct c_expr | |
3734 | c_parser_initializer (c_parser *parser) | |
3735 | { | |
3736 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
3737 | return c_parser_braced_init (parser, NULL_TREE, false); | |
3738 | else | |
46bdb9cf JM |
3739 | { |
3740 | struct c_expr ret; | |
c2255bc4 | 3741 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
3742 | ret = c_parser_expr_no_commas (parser, NULL); |
3743 | if (TREE_CODE (ret.value) != STRING_CST | |
3744 | && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 3745 | ret = default_function_array_read_conversion (loc, ret); |
46bdb9cf JM |
3746 | return ret; |
3747 | } | |
27bf414c JM |
3748 | } |
3749 | ||
3750 | /* Parse a braced initializer list. TYPE is the type specified for a | |
3751 | compound literal, and NULL_TREE for other initializers and for | |
3752 | nested braced lists. NESTED_P is true for nested braced lists, | |
3753 | false for the list of a compound literal or the list that is the | |
3754 | top-level initializer in a declaration. */ | |
3755 | ||
3756 | static struct c_expr | |
3757 | c_parser_braced_init (c_parser *parser, tree type, bool nested_p) | |
3758 | { | |
a1e3b3d9 LB |
3759 | struct c_expr ret; |
3760 | struct obstack braced_init_obstack; | |
c7412148 | 3761 | location_t brace_loc = c_parser_peek_token (parser)->location; |
a1e3b3d9 | 3762 | gcc_obstack_init (&braced_init_obstack); |
27bf414c JM |
3763 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); |
3764 | c_parser_consume_token (parser); | |
3765 | if (nested_p) | |
a1e3b3d9 | 3766 | push_init_level (0, &braced_init_obstack); |
27bf414c JM |
3767 | else |
3768 | really_start_incremental_init (type); | |
3769 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3770 | { | |
c1771a20 | 3771 | pedwarn (brace_loc, OPT_Wpedantic, "ISO C forbids empty initializer braces"); |
27bf414c JM |
3772 | } |
3773 | else | |
3774 | { | |
3775 | /* Parse a non-empty initializer list, possibly with a trailing | |
3776 | comma. */ | |
3777 | while (true) | |
3778 | { | |
a1e3b3d9 | 3779 | c_parser_initelt (parser, &braced_init_obstack); |
27bf414c JM |
3780 | if (parser->error) |
3781 | break; | |
3782 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
3783 | c_parser_consume_token (parser); | |
3784 | else | |
3785 | break; | |
3786 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3787 | break; | |
3788 | } | |
3789 | } | |
3790 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
3791 | { | |
27bf414c JM |
3792 | ret.value = error_mark_node; |
3793 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 3794 | ret.original_type = NULL; |
27bf414c | 3795 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>"); |
a1e3b3d9 LB |
3796 | pop_init_level (0, &braced_init_obstack); |
3797 | obstack_free (&braced_init_obstack, NULL); | |
27bf414c JM |
3798 | return ret; |
3799 | } | |
3800 | c_parser_consume_token (parser); | |
a1e3b3d9 LB |
3801 | ret = pop_init_level (0, &braced_init_obstack); |
3802 | obstack_free (&braced_init_obstack, NULL); | |
3803 | return ret; | |
27bf414c JM |
3804 | } |
3805 | ||
3806 | /* Parse a nested initializer, including designators. */ | |
3807 | ||
3808 | static void | |
a1e3b3d9 | 3809 | c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack) |
27bf414c JM |
3810 | { |
3811 | /* Parse any designator or designator list. A single array | |
3812 | designator may have the subsequent "=" omitted in GNU C, but a | |
3813 | longer list or a structure member designator may not. */ | |
3814 | if (c_parser_next_token_is (parser, CPP_NAME) | |
3815 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
3816 | { | |
3817 | /* Old-style structure member designator. */ | |
a1e3b3d9 LB |
3818 | set_init_label (c_parser_peek_token (parser)->value, |
3819 | braced_init_obstack); | |
fcf73884 | 3820 | /* Use the colon as the error location. */ |
c1771a20 | 3821 | pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 3822 | "obsolete use of designated initializer with %<:%>"); |
27bf414c JM |
3823 | c_parser_consume_token (parser); |
3824 | c_parser_consume_token (parser); | |
3825 | } | |
3826 | else | |
3827 | { | |
3828 | /* des_seen is 0 if there have been no designators, 1 if there | |
3829 | has been a single array designator and 2 otherwise. */ | |
3830 | int des_seen = 0; | |
c7412148 | 3831 | /* Location of a designator. */ |
922f2908 | 3832 | location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3833 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE) |
3834 | || c_parser_next_token_is (parser, CPP_DOT)) | |
3835 | { | |
3836 | int des_prev = des_seen; | |
c7412148 TT |
3837 | if (!des_seen) |
3838 | des_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
3839 | if (des_seen < 2) |
3840 | des_seen++; | |
3841 | if (c_parser_next_token_is (parser, CPP_DOT)) | |
3842 | { | |
3843 | des_seen = 2; | |
3844 | c_parser_consume_token (parser); | |
3845 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
3846 | { | |
a1e3b3d9 LB |
3847 | set_init_label (c_parser_peek_token (parser)->value, |
3848 | braced_init_obstack); | |
27bf414c JM |
3849 | c_parser_consume_token (parser); |
3850 | } | |
3851 | else | |
3852 | { | |
3853 | struct c_expr init; | |
3854 | init.value = error_mark_node; | |
3855 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3856 | init.original_type = NULL; |
27bf414c JM |
3857 | c_parser_error (parser, "expected identifier"); |
3858 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3859 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3860 | return; |
3861 | } | |
3862 | } | |
3863 | else | |
3864 | { | |
3865 | tree first, second; | |
922f2908 | 3866 | location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3867 | /* ??? Following the old parser, [ objc-receiver |
3868 | objc-message-args ] is accepted as an initializer, | |
3869 | being distinguished from a designator by what follows | |
3870 | the first assignment expression inside the square | |
3871 | brackets, but after a first array designator a | |
3872 | subsequent square bracket is for Objective-C taken to | |
3873 | start an expression, using the obsolete form of | |
3874 | designated initializer without '=', rather than | |
3875 | possibly being a second level of designation: in LALR | |
3876 | terms, the '[' is shifted rather than reducing | |
3877 | designator to designator-list. */ | |
3878 | if (des_prev == 1 && c_dialect_objc ()) | |
3879 | { | |
3880 | des_seen = des_prev; | |
3881 | break; | |
3882 | } | |
3883 | if (des_prev == 0 && c_dialect_objc ()) | |
3884 | { | |
3885 | /* This might be an array designator or an | |
3886 | Objective-C message expression. If the former, | |
3887 | continue parsing here; if the latter, parse the | |
3888 | remainder of the initializer given the starting | |
3889 | primary-expression. ??? It might make sense to | |
3890 | distinguish when des_prev == 1 as well; see | |
3891 | previous comment. */ | |
3892 | tree rec, args; | |
3893 | struct c_expr mexpr; | |
3894 | c_parser_consume_token (parser); | |
3895 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
3896 | && ((c_parser_peek_token (parser)->id_kind | |
3897 | == C_ID_TYPENAME) | |
3898 | || (c_parser_peek_token (parser)->id_kind | |
3899 | == C_ID_CLASSNAME))) | |
3900 | { | |
3901 | /* Type name receiver. */ | |
3902 | tree id = c_parser_peek_token (parser)->value; | |
3903 | c_parser_consume_token (parser); | |
3904 | rec = objc_get_class_reference (id); | |
3905 | goto parse_message_args; | |
3906 | } | |
3907 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3908 | mark_exp_read (first); |
27bf414c JM |
3909 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS) |
3910 | || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3911 | goto array_desig_after_first; | |
3912 | /* Expression receiver. So far only one part | |
3913 | without commas has been parsed; there might be | |
3914 | more of the expression. */ | |
3915 | rec = first; | |
3916 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
3917 | { | |
f2a71bbc | 3918 | struct c_expr next; |
c2255bc4 AH |
3919 | location_t comma_loc, exp_loc; |
3920 | comma_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 3921 | c_parser_consume_token (parser); |
c2255bc4 | 3922 | exp_loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 3923 | next = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
3924 | next = default_function_array_read_conversion (exp_loc, |
3925 | next); | |
c2255bc4 | 3926 | rec = build_compound_expr (comma_loc, rec, next.value); |
27bf414c JM |
3927 | } |
3928 | parse_message_args: | |
3929 | /* Now parse the objc-message-args. */ | |
3930 | args = c_parser_objc_message_args (parser); | |
3931 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3932 | "expected %<]%>"); | |
3933 | mexpr.value | |
eb345401 | 3934 | = objc_build_message_expr (rec, args); |
27bf414c | 3935 | mexpr.original_code = ERROR_MARK; |
6866c6e8 | 3936 | mexpr.original_type = NULL; |
27bf414c JM |
3937 | /* Now parse and process the remainder of the |
3938 | initializer, starting with this message | |
3939 | expression as a primary-expression. */ | |
a1e3b3d9 | 3940 | c_parser_initval (parser, &mexpr, braced_init_obstack); |
27bf414c JM |
3941 | return; |
3942 | } | |
3943 | c_parser_consume_token (parser); | |
3944 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3945 | mark_exp_read (first); |
27bf414c JM |
3946 | array_desig_after_first: |
3947 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3948 | { | |
c7412148 | 3949 | ellipsis_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3950 | c_parser_consume_token (parser); |
3951 | second = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3952 | mark_exp_read (second); |
27bf414c JM |
3953 | } |
3954 | else | |
3955 | second = NULL_TREE; | |
3956 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3957 | { | |
3958 | c_parser_consume_token (parser); | |
a1e3b3d9 | 3959 | set_init_index (first, second, braced_init_obstack); |
fcf73884 | 3960 | if (second) |
c1771a20 | 3961 | pedwarn (ellipsis_loc, OPT_Wpedantic, |
509c9d60 | 3962 | "ISO C forbids specifying range of elements to initialize"); |
27bf414c JM |
3963 | } |
3964 | else | |
3965 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3966 | "expected %<]%>"); | |
3967 | } | |
3968 | } | |
3969 | if (des_seen >= 1) | |
3970 | { | |
3971 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
3972 | { | |
fcf73884 | 3973 | if (!flag_isoc99) |
c1771a20 | 3974 | pedwarn (des_loc, OPT_Wpedantic, |
509c9d60 | 3975 | "ISO C90 forbids specifying subobject to initialize"); |
27bf414c JM |
3976 | c_parser_consume_token (parser); |
3977 | } | |
3978 | else | |
3979 | { | |
3980 | if (des_seen == 1) | |
c1771a20 | 3981 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 3982 | "obsolete use of designated initializer without %<=%>"); |
27bf414c JM |
3983 | else |
3984 | { | |
3985 | struct c_expr init; | |
3986 | init.value = error_mark_node; | |
3987 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3988 | init.original_type = NULL; |
27bf414c JM |
3989 | c_parser_error (parser, "expected %<=%>"); |
3990 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3991 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3992 | return; |
3993 | } | |
3994 | } | |
3995 | } | |
3996 | } | |
a1e3b3d9 | 3997 | c_parser_initval (parser, NULL, braced_init_obstack); |
27bf414c JM |
3998 | } |
3999 | ||
4000 | /* Parse a nested initializer; as c_parser_initializer but parses | |
4001 | initializers within braced lists, after any designators have been | |
4002 | applied. If AFTER is not NULL then it is an Objective-C message | |
4003 | expression which is the primary-expression starting the | |
4004 | initializer. */ | |
4005 | ||
4006 | static void | |
a1e3b3d9 LB |
4007 | c_parser_initval (c_parser *parser, struct c_expr *after, |
4008 | struct obstack * braced_init_obstack) | |
27bf414c JM |
4009 | { |
4010 | struct c_expr init; | |
4011 | gcc_assert (!after || c_dialect_objc ()); | |
4012 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after) | |
4013 | init = c_parser_braced_init (parser, NULL_TREE, true); | |
4014 | else | |
46bdb9cf | 4015 | { |
c2255bc4 | 4016 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
4017 | init = c_parser_expr_no_commas (parser, after); |
4018 | if (init.value != NULL_TREE | |
4019 | && TREE_CODE (init.value) != STRING_CST | |
4020 | && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 4021 | init = default_function_array_read_conversion (loc, init); |
46bdb9cf | 4022 | } |
a1e3b3d9 | 4023 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
4024 | } |
4025 | ||
4026 | /* Parse a compound statement (possibly a function body) (C90 6.6.2, | |
4027 | C99 6.8.2). | |
4028 | ||
4029 | compound-statement: | |
4030 | { block-item-list[opt] } | |
4031 | { label-declarations block-item-list } | |
4032 | ||
4033 | block-item-list: | |
4034 | block-item | |
4035 | block-item-list block-item | |
4036 | ||
4037 | block-item: | |
4038 | nested-declaration | |
4039 | statement | |
4040 | ||
4041 | nested-declaration: | |
4042 | declaration | |
4043 | ||
4044 | GNU extensions: | |
4045 | ||
4046 | compound-statement: | |
4047 | { label-declarations block-item-list } | |
4048 | ||
4049 | nested-declaration: | |
4050 | __extension__ nested-declaration | |
4051 | nested-function-definition | |
4052 | ||
4053 | label-declarations: | |
4054 | label-declaration | |
4055 | label-declarations label-declaration | |
4056 | ||
4057 | label-declaration: | |
4058 | __label__ identifier-list ; | |
4059 | ||
4060 | Allowing the mixing of declarations and code is new in C99. The | |
4061 | GNU syntax also permits (not shown above) labels at the end of | |
4062 | compound statements, which yield an error. We don't allow labels | |
4063 | on declarations; this might seem like a natural extension, but | |
4064 | there would be a conflict between attributes on the label and | |
4065 | prefix attributes on the declaration. ??? The syntax follows the | |
4066 | old parser in requiring something after label declarations. | |
4067 | Although they are erroneous if the labels declared aren't defined, | |
953ff289 | 4068 | is it useful for the syntax to be this way? |
b8698a0f | 4069 | |
953ff289 | 4070 | OpenMP: |
b8698a0f | 4071 | |
953ff289 DN |
4072 | block-item: |
4073 | openmp-directive | |
4074 | ||
4075 | openmp-directive: | |
4076 | barrier-directive | |
4077 | flush-directive */ | |
27bf414c JM |
4078 | |
4079 | static tree | |
4080 | c_parser_compound_statement (c_parser *parser) | |
4081 | { | |
4082 | tree stmt; | |
c2255bc4 AH |
4083 | location_t brace_loc; |
4084 | brace_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 4085 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
5600f233 JM |
4086 | { |
4087 | /* Ensure a scope is entered and left anyway to avoid confusion | |
4088 | if we have just prepared to enter a function body. */ | |
4089 | stmt = c_begin_compound_stmt (true); | |
c2255bc4 | 4090 | c_end_compound_stmt (brace_loc, stmt, true); |
5600f233 JM |
4091 | return error_mark_node; |
4092 | } | |
27bf414c JM |
4093 | stmt = c_begin_compound_stmt (true); |
4094 | c_parser_compound_statement_nostart (parser); | |
36536d79 BI |
4095 | |
4096 | /* If the compound stmt contains array notations, then we expand them. */ | |
4097 | if (flag_enable_cilkplus && contains_array_notation_expr (stmt)) | |
4098 | stmt = expand_array_notation_exprs (stmt); | |
c2255bc4 | 4099 | return c_end_compound_stmt (brace_loc, stmt, true); |
27bf414c JM |
4100 | } |
4101 | ||
4102 | /* Parse a compound statement except for the opening brace. This is | |
4103 | used for parsing both compound statements and statement expressions | |
4104 | (which follow different paths to handling the opening). */ | |
4105 | ||
4106 | static void | |
4107 | c_parser_compound_statement_nostart (c_parser *parser) | |
4108 | { | |
4109 | bool last_stmt = false; | |
4110 | bool last_label = false; | |
6ec637a4 | 4111 | bool save_valid_for_pragma = valid_location_for_stdc_pragma_p (); |
3ba09659 | 4112 | location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4113 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) |
4114 | { | |
4115 | c_parser_consume_token (parser); | |
4116 | return; | |
4117 | } | |
6ec637a4 | 4118 | mark_valid_location_for_stdc_pragma (true); |
27bf414c JM |
4119 | if (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4120 | { | |
4121 | /* Read zero or more forward-declarations for labels that nested | |
4122 | functions can jump to. */ | |
6ec637a4 | 4123 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4124 | while (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4125 | { | |
c2255bc4 | 4126 | label_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4127 | c_parser_consume_token (parser); |
4128 | /* Any identifiers, including those declared as type names, | |
4129 | are OK here. */ | |
4130 | while (true) | |
4131 | { | |
4132 | tree label; | |
4133 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
4134 | { | |
4135 | c_parser_error (parser, "expected identifier"); | |
4136 | break; | |
4137 | } | |
4138 | label | |
4139 | = declare_label (c_parser_peek_token (parser)->value); | |
4140 | C_DECLARED_LABEL_FLAG (label) = 1; | |
c2255bc4 | 4141 | add_stmt (build_stmt (label_loc, DECL_EXPR, label)); |
27bf414c JM |
4142 | c_parser_consume_token (parser); |
4143 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4144 | c_parser_consume_token (parser); | |
4145 | else | |
4146 | break; | |
4147 | } | |
4148 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4149 | } | |
c1771a20 | 4150 | pedwarn (label_loc, OPT_Wpedantic, "ISO C forbids label declarations"); |
27bf414c JM |
4151 | } |
4152 | /* We must now have at least one statement, label or declaration. */ | |
4153 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4154 | { | |
6ec637a4 | 4155 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
27bf414c JM |
4156 | c_parser_error (parser, "expected declaration or statement"); |
4157 | c_parser_consume_token (parser); | |
4158 | return; | |
4159 | } | |
4160 | while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4161 | { | |
4162 | location_t loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4163 | if (c_parser_next_token_is_keyword (parser, RID_CASE) |
4164 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4165 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4166 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4167 | { | |
c7412148 TT |
4168 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) |
4169 | label_loc = c_parser_peek_2nd_token (parser)->location; | |
4170 | else | |
4171 | label_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4172 | last_label = true; |
4173 | last_stmt = false; | |
6ec637a4 | 4174 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4175 | c_parser_label (parser); |
4176 | } | |
4177 | else if (!last_label | |
2f413185 | 4178 | && c_parser_next_tokens_start_declaration (parser)) |
27bf414c JM |
4179 | { |
4180 | last_label = false; | |
6ec637a4 | 4181 | mark_valid_location_for_stdc_pragma (false); |
f05b9d93 | 4182 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
fcf73884 | 4183 | if (last_stmt) |
b8698a0f | 4184 | pedwarn_c90 (loc, |
509c9d60 | 4185 | (pedantic && !flag_isoc99) |
c1771a20 | 4186 | ? OPT_Wpedantic |
fcf73884 | 4187 | : OPT_Wdeclaration_after_statement, |
509c9d60 | 4188 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4189 | last_stmt = false; |
4190 | } | |
4191 | else if (!last_label | |
4192 | && c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4193 | { | |
4194 | /* __extension__ can start a declaration, but is also an | |
4195 | unary operator that can start an expression. Consume all | |
4196 | but the last of a possible series of __extension__ to | |
4197 | determine which. */ | |
4198 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4199 | && (c_parser_peek_2nd_token (parser)->keyword | |
4200 | == RID_EXTENSION)) | |
4201 | c_parser_consume_token (parser); | |
32912286 | 4202 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4203 | { |
4204 | int ext; | |
4205 | ext = disable_extension_diagnostics (); | |
4206 | c_parser_consume_token (parser); | |
4207 | last_label = false; | |
6ec637a4 | 4208 | mark_valid_location_for_stdc_pragma (false); |
32912286 | 4209 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 | 4210 | true, NULL); |
27bf414c JM |
4211 | /* Following the old parser, __extension__ does not |
4212 | disable this diagnostic. */ | |
4213 | restore_extension_diagnostics (ext); | |
fcf73884 | 4214 | if (last_stmt) |
509c9d60 | 4215 | pedwarn_c90 (loc, (pedantic && !flag_isoc99) |
c1771a20 | 4216 | ? OPT_Wpedantic |
fcf73884 | 4217 | : OPT_Wdeclaration_after_statement, |
509c9d60 | 4218 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4219 | last_stmt = false; |
4220 | } | |
4221 | else | |
4222 | goto statement; | |
4223 | } | |
bc4071dd RH |
4224 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
4225 | { | |
4226 | /* External pragmas, and some omp pragmas, are not associated | |
4227 | with regular c code, and so are not to be considered statements | |
4228 | syntactically. This ensures that the user doesn't put them | |
4229 | places that would turn into syntax errors if the directive | |
4230 | were ignored. */ | |
4231 | if (c_parser_pragma (parser, pragma_compound)) | |
4232 | last_label = false, last_stmt = true; | |
4233 | } | |
4234 | else if (c_parser_next_token_is (parser, CPP_EOF)) | |
4235 | { | |
6ec637a4 | 4236 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
bc4071dd RH |
4237 | c_parser_error (parser, "expected declaration or statement"); |
4238 | return; | |
4239 | } | |
b4b56033 MLI |
4240 | else if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4241 | { | |
b8698a0f | 4242 | if (parser->in_if_block) |
b4b56033 | 4243 | { |
6ec637a4 | 4244 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
3ba09659 | 4245 | error_at (loc, """expected %<}%> before %<else%>"); |
b4b56033 MLI |
4246 | return; |
4247 | } | |
b8698a0f | 4248 | else |
b4b56033 | 4249 | { |
3ba09659 | 4250 | error_at (loc, "%<else%> without a previous %<if%>"); |
b4b56033 MLI |
4251 | c_parser_consume_token (parser); |
4252 | continue; | |
4253 | } | |
4254 | } | |
27bf414c JM |
4255 | else |
4256 | { | |
4257 | statement: | |
4258 | last_label = false; | |
4259 | last_stmt = true; | |
6ec637a4 | 4260 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4261 | c_parser_statement_after_labels (parser); |
4262 | } | |
2c14ae9a VR |
4263 | |
4264 | parser->error = false; | |
27bf414c JM |
4265 | } |
4266 | if (last_label) | |
3ba09659 | 4267 | error_at (label_loc, "label at end of compound statement"); |
27bf414c | 4268 | c_parser_consume_token (parser); |
6ec637a4 JJ |
4269 | /* Restore the value we started with. */ |
4270 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); | |
27bf414c JM |
4271 | } |
4272 | ||
4273 | /* Parse a label (C90 6.6.1, C99 6.8.1). | |
4274 | ||
4275 | label: | |
4276 | identifier : attributes[opt] | |
4277 | case constant-expression : | |
4278 | default : | |
4279 | ||
4280 | GNU extensions: | |
4281 | ||
4282 | label: | |
4283 | case constant-expression ... constant-expression : | |
4284 | ||
4285 | The use of attributes on labels is a GNU extension. The syntax in | |
4286 | GNU C accepts any expressions without commas, non-constant | |
4287 | expressions being rejected later. */ | |
4288 | ||
4289 | static void | |
4290 | c_parser_label (c_parser *parser) | |
4291 | { | |
4292 | location_t loc1 = c_parser_peek_token (parser)->location; | |
4293 | tree label = NULL_TREE; | |
4294 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) | |
4295 | { | |
4296 | tree exp1, exp2; | |
4297 | c_parser_consume_token (parser); | |
4298 | exp1 = c_parser_expr_no_commas (parser, NULL).value; | |
4299 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
4300 | { | |
4301 | c_parser_consume_token (parser); | |
c2255bc4 | 4302 | label = do_case (loc1, exp1, NULL_TREE); |
27bf414c JM |
4303 | } |
4304 | else if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4305 | { | |
4306 | c_parser_consume_token (parser); | |
4307 | exp2 = c_parser_expr_no_commas (parser, NULL).value; | |
4308 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4309 | label = do_case (loc1, exp1, exp2); |
27bf414c JM |
4310 | } |
4311 | else | |
4312 | c_parser_error (parser, "expected %<:%> or %<...%>"); | |
4313 | } | |
4314 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
4315 | { | |
4316 | c_parser_consume_token (parser); | |
4317 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4318 | label = do_case (loc1, NULL_TREE, NULL_TREE); |
27bf414c JM |
4319 | } |
4320 | else | |
4321 | { | |
4322 | tree name = c_parser_peek_token (parser)->value; | |
4323 | tree tlab; | |
27bf414c | 4324 | tree attrs; |
c7412148 | 4325 | location_t loc2 = c_parser_peek_token (parser)->location; |
27bf414c JM |
4326 | gcc_assert (c_parser_next_token_is (parser, CPP_NAME)); |
4327 | c_parser_consume_token (parser); | |
4328 | gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); | |
27bf414c JM |
4329 | c_parser_consume_token (parser); |
4330 | attrs = c_parser_attributes (parser); | |
4331 | tlab = define_label (loc2, name); | |
4332 | if (tlab) | |
4333 | { | |
4334 | decl_attributes (&tlab, attrs, 0); | |
c2255bc4 | 4335 | label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab)); |
27bf414c JM |
4336 | } |
4337 | } | |
4338 | if (label) | |
3d57f0f0 | 4339 | { |
2f413185 | 4340 | if (c_parser_next_tokens_start_declaration (parser)) |
3d57f0f0 | 4341 | { |
3ba09659 AH |
4342 | error_at (c_parser_peek_token (parser)->location, |
4343 | "a label can only be part of a statement and " | |
4344 | "a declaration is not a statement"); | |
b8698a0f | 4345 | c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, |
32912286 | 4346 | /*static_assert_ok*/ true, |
6265d07c | 4347 | /*empty_ok*/ true, /*nested*/ true, |
f05b9d93 | 4348 | /*start_attr_ok*/ true, NULL); |
3d57f0f0 MLI |
4349 | } |
4350 | } | |
27bf414c JM |
4351 | } |
4352 | ||
4353 | /* Parse a statement (C90 6.6, C99 6.8). | |
4354 | ||
4355 | statement: | |
4356 | labeled-statement | |
4357 | compound-statement | |
4358 | expression-statement | |
4359 | selection-statement | |
4360 | iteration-statement | |
4361 | jump-statement | |
4362 | ||
4363 | labeled-statement: | |
4364 | label statement | |
4365 | ||
4366 | expression-statement: | |
4367 | expression[opt] ; | |
4368 | ||
4369 | selection-statement: | |
4370 | if-statement | |
4371 | switch-statement | |
4372 | ||
4373 | iteration-statement: | |
4374 | while-statement | |
4375 | do-statement | |
4376 | for-statement | |
4377 | ||
4378 | jump-statement: | |
4379 | goto identifier ; | |
4380 | continue ; | |
4381 | break ; | |
4382 | return expression[opt] ; | |
4383 | ||
4384 | GNU extensions: | |
4385 | ||
4386 | statement: | |
4387 | asm-statement | |
4388 | ||
4389 | jump-statement: | |
4390 | goto * expression ; | |
4391 | ||
4392 | Objective-C: | |
4393 | ||
4394 | statement: | |
4395 | objc-throw-statement | |
4396 | objc-try-catch-statement | |
4397 | objc-synchronized-statement | |
4398 | ||
4399 | objc-throw-statement: | |
4400 | @throw expression ; | |
4401 | @throw ; | |
953ff289 DN |
4402 | |
4403 | OpenMP: | |
4404 | ||
4405 | statement: | |
4406 | openmp-construct | |
4407 | ||
4408 | openmp-construct: | |
4409 | parallel-construct | |
4410 | for-construct | |
4411 | sections-construct | |
4412 | single-construct | |
4413 | parallel-for-construct | |
4414 | parallel-sections-construct | |
4415 | master-construct | |
4416 | critical-construct | |
4417 | atomic-construct | |
4418 | ordered-construct | |
4419 | ||
4420 | parallel-construct: | |
4421 | parallel-directive structured-block | |
4422 | ||
4423 | for-construct: | |
4424 | for-directive iteration-statement | |
4425 | ||
4426 | sections-construct: | |
4427 | sections-directive section-scope | |
4428 | ||
4429 | single-construct: | |
4430 | single-directive structured-block | |
4431 | ||
4432 | parallel-for-construct: | |
4433 | parallel-for-directive iteration-statement | |
4434 | ||
4435 | parallel-sections-construct: | |
4436 | parallel-sections-directive section-scope | |
4437 | ||
4438 | master-construct: | |
4439 | master-directive structured-block | |
4440 | ||
4441 | critical-construct: | |
4442 | critical-directive structured-block | |
4443 | ||
4444 | atomic-construct: | |
4445 | atomic-directive expression-statement | |
4446 | ||
4447 | ordered-construct: | |
0a35513e AH |
4448 | ordered-directive structured-block |
4449 | ||
4450 | Transactional Memory: | |
4451 | ||
4452 | statement: | |
4453 | transaction-statement | |
4454 | transaction-cancel-statement | |
4455 | */ | |
27bf414c JM |
4456 | |
4457 | static void | |
4458 | c_parser_statement (c_parser *parser) | |
4459 | { | |
4460 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4461 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4462 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4463 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4464 | c_parser_label (parser); | |
4465 | c_parser_statement_after_labels (parser); | |
4466 | } | |
4467 | ||
4468 | /* Parse a statement, other than a labeled statement. */ | |
4469 | ||
4470 | static void | |
4471 | c_parser_statement_after_labels (c_parser *parser) | |
4472 | { | |
4473 | location_t loc = c_parser_peek_token (parser)->location; | |
4474 | tree stmt = NULL_TREE; | |
b4b56033 MLI |
4475 | bool in_if_block = parser->in_if_block; |
4476 | parser->in_if_block = false; | |
27bf414c JM |
4477 | switch (c_parser_peek_token (parser)->type) |
4478 | { | |
4479 | case CPP_OPEN_BRACE: | |
4480 | add_stmt (c_parser_compound_statement (parser)); | |
4481 | break; | |
4482 | case CPP_KEYWORD: | |
4483 | switch (c_parser_peek_token (parser)->keyword) | |
4484 | { | |
4485 | case RID_IF: | |
4486 | c_parser_if_statement (parser); | |
4487 | break; | |
4488 | case RID_SWITCH: | |
4489 | c_parser_switch_statement (parser); | |
4490 | break; | |
4491 | case RID_WHILE: | |
4492 | c_parser_while_statement (parser); | |
4493 | break; | |
4494 | case RID_DO: | |
4495 | c_parser_do_statement (parser); | |
4496 | break; | |
4497 | case RID_FOR: | |
4498 | c_parser_for_statement (parser); | |
4499 | break; | |
4500 | case RID_GOTO: | |
4501 | c_parser_consume_token (parser); | |
4502 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4503 | { | |
c2255bc4 AH |
4504 | stmt = c_finish_goto_label (loc, |
4505 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4506 | c_parser_consume_token (parser); |
4507 | } | |
4508 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
4509 | { | |
84628aa8 JJ |
4510 | tree val; |
4511 | ||
27bf414c | 4512 | c_parser_consume_token (parser); |
84628aa8 JJ |
4513 | val = c_parser_expression (parser).value; |
4514 | mark_exp_read (val); | |
4515 | stmt = c_finish_goto_ptr (loc, val); | |
27bf414c JM |
4516 | } |
4517 | else | |
4518 | c_parser_error (parser, "expected identifier or %<*%>"); | |
4519 | goto expect_semicolon; | |
4520 | case RID_CONTINUE: | |
4521 | c_parser_consume_token (parser); | |
c2255bc4 | 4522 | stmt = c_finish_bc_stmt (loc, &c_cont_label, false); |
27bf414c JM |
4523 | goto expect_semicolon; |
4524 | case RID_BREAK: | |
4525 | c_parser_consume_token (parser); | |
c2255bc4 | 4526 | stmt = c_finish_bc_stmt (loc, &c_break_label, true); |
27bf414c JM |
4527 | goto expect_semicolon; |
4528 | case RID_RETURN: | |
4529 | c_parser_consume_token (parser); | |
4530 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4531 | { | |
c2255bc4 | 4532 | stmt = c_finish_return (loc, NULL_TREE, NULL_TREE); |
27bf414c JM |
4533 | c_parser_consume_token (parser); |
4534 | } | |
4535 | else | |
4536 | { | |
bbbbb16a | 4537 | struct c_expr expr = c_parser_expression_conv (parser); |
ebfbbdc5 | 4538 | mark_exp_read (expr.value); |
c2255bc4 | 4539 | stmt = c_finish_return (loc, expr.value, expr.original_type); |
27bf414c JM |
4540 | goto expect_semicolon; |
4541 | } | |
4542 | break; | |
4543 | case RID_ASM: | |
4544 | stmt = c_parser_asm_statement (parser); | |
4545 | break; | |
0a35513e AH |
4546 | case RID_TRANSACTION_ATOMIC: |
4547 | case RID_TRANSACTION_RELAXED: | |
4548 | stmt = c_parser_transaction (parser, | |
4549 | c_parser_peek_token (parser)->keyword); | |
4550 | break; | |
4551 | case RID_TRANSACTION_CANCEL: | |
4552 | stmt = c_parser_transaction_cancel (parser); | |
4553 | goto expect_semicolon; | |
49b91f05 | 4554 | case RID_AT_THROW: |
27bf414c JM |
4555 | gcc_assert (c_dialect_objc ()); |
4556 | c_parser_consume_token (parser); | |
4557 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4558 | { | |
c2255bc4 | 4559 | stmt = objc_build_throw_stmt (loc, NULL_TREE); |
27bf414c JM |
4560 | c_parser_consume_token (parser); |
4561 | } | |
4562 | else | |
4563 | { | |
928c19bb JM |
4564 | tree expr = c_parser_expression (parser).value; |
4565 | expr = c_fully_fold (expr, false, NULL); | |
c2255bc4 | 4566 | stmt = objc_build_throw_stmt (loc, expr); |
27bf414c JM |
4567 | goto expect_semicolon; |
4568 | } | |
4569 | break; | |
49b91f05 | 4570 | case RID_AT_TRY: |
27bf414c | 4571 | gcc_assert (c_dialect_objc ()); |
437c2322 | 4572 | c_parser_objc_try_catch_finally_statement (parser); |
27bf414c JM |
4573 | break; |
4574 | case RID_AT_SYNCHRONIZED: | |
4575 | gcc_assert (c_dialect_objc ()); | |
4576 | c_parser_objc_synchronized_statement (parser); | |
4577 | break; | |
4578 | default: | |
4579 | goto expr_stmt; | |
4580 | } | |
4581 | break; | |
4582 | case CPP_SEMICOLON: | |
4583 | c_parser_consume_token (parser); | |
4584 | break; | |
4585 | case CPP_CLOSE_PAREN: | |
4586 | case CPP_CLOSE_SQUARE: | |
4587 | /* Avoid infinite loop in error recovery: | |
4588 | c_parser_skip_until_found stops at a closing nesting | |
4589 | delimiter without consuming it, but here we need to consume | |
4590 | it to proceed further. */ | |
4591 | c_parser_error (parser, "expected statement"); | |
4592 | c_parser_consume_token (parser); | |
4593 | break; | |
bc4071dd RH |
4594 | case CPP_PRAGMA: |
4595 | c_parser_pragma (parser, pragma_stmt); | |
4596 | break; | |
27bf414c JM |
4597 | default: |
4598 | expr_stmt: | |
c2255bc4 | 4599 | stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value); |
27bf414c JM |
4600 | expect_semicolon: |
4601 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4602 | break; | |
4603 | } | |
4604 | /* Two cases cannot and do not have line numbers associated: If stmt | |
4605 | is degenerate, such as "2;", then stmt is an INTEGER_CST, which | |
4606 | cannot hold line numbers. But that's OK because the statement | |
4607 | will either be changed to a MODIFY_EXPR during gimplification of | |
4608 | the statement expr, or discarded. If stmt was compound, but | |
4609 | without new variables, we will have skipped the creation of a | |
4610 | BIND and will have a bare STATEMENT_LIST. But that's OK because | |
4611 | (recursively) all of the component statements should already have | |
4612 | line numbers assigned. ??? Can we discard no-op statements | |
4613 | earlier? */ | |
c2255bc4 AH |
4614 | if (CAN_HAVE_LOCATION_P (stmt) |
4615 | && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION) | |
4616 | SET_EXPR_LOCATION (stmt, loc); | |
b4b56033 MLI |
4617 | |
4618 | parser->in_if_block = in_if_block; | |
27bf414c JM |
4619 | } |
4620 | ||
ca085fd7 MLI |
4621 | /* Parse the condition from an if, do, while or for statements. */ |
4622 | ||
4623 | static tree | |
4624 | c_parser_condition (c_parser *parser) | |
4625 | { | |
c2255bc4 | 4626 | location_t loc = c_parser_peek_token (parser)->location; |
ca085fd7 | 4627 | tree cond; |
928c19bb JM |
4628 | cond = c_parser_expression_conv (parser).value; |
4629 | cond = c_objc_common_truthvalue_conversion (loc, cond); | |
4630 | cond = c_fully_fold (cond, false, NULL); | |
ca085fd7 MLI |
4631 | if (warn_sequence_point) |
4632 | verify_sequence_points (cond); | |
4633 | return cond; | |
4634 | } | |
4635 | ||
27bf414c JM |
4636 | /* Parse a parenthesized condition from an if, do or while statement. |
4637 | ||
4638 | condition: | |
4639 | ( expression ) | |
4640 | */ | |
4641 | static tree | |
4642 | c_parser_paren_condition (c_parser *parser) | |
4643 | { | |
27bf414c JM |
4644 | tree cond; |
4645 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4646 | return error_mark_node; | |
ca085fd7 | 4647 | cond = c_parser_condition (parser); |
27bf414c JM |
4648 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4649 | return cond; | |
4650 | } | |
4651 | ||
4652 | /* Parse a statement which is a block in C99. */ | |
4653 | ||
4654 | static tree | |
4655 | c_parser_c99_block_statement (c_parser *parser) | |
4656 | { | |
4657 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4658 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c | 4659 | c_parser_statement (parser); |
c2255bc4 | 4660 | return c_end_compound_stmt (loc, block, flag_isoc99); |
27bf414c JM |
4661 | } |
4662 | ||
b4b56033 MLI |
4663 | /* Parse the body of an if statement. This is just parsing a |
4664 | statement but (a) it is a block in C99, (b) we track whether the | |
4665 | body is an if statement for the sake of -Wparentheses warnings, (c) | |
4666 | we handle an empty body specially for the sake of -Wempty-body | |
4667 | warnings, and (d) we call parser_compound_statement directly | |
4668 | because c_parser_statement_after_labels resets | |
4669 | parser->in_if_block. */ | |
27bf414c JM |
4670 | |
4671 | static tree | |
4672 | c_parser_if_body (c_parser *parser, bool *if_p) | |
4673 | { | |
4674 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4675 | location_t body_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4676 | while (c_parser_next_token_is_keyword (parser, RID_CASE) |
4677 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4678 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4679 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4680 | c_parser_label (parser); | |
4681 | *if_p = c_parser_next_token_is_keyword (parser, RID_IF); | |
62e00e94 | 4682 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
b4b56033 | 4683 | { |
626c34b5 | 4684 | location_t loc = c_parser_peek_token (parser)->location; |
c2255bc4 | 4685 | add_stmt (build_empty_stmt (loc)); |
b4b56033 | 4686 | c_parser_consume_token (parser); |
626c34b5 PB |
4687 | if (!c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4688 | warning_at (loc, OPT_Wempty_body, | |
4689 | "suggest braces around empty body in an %<if%> statement"); | |
b4b56033 MLI |
4690 | } |
4691 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
4692 | add_stmt (c_parser_compound_statement (parser)); | |
4693 | else | |
4694 | c_parser_statement_after_labels (parser); | |
c2255bc4 | 4695 | return c_end_compound_stmt (body_loc, block, flag_isoc99); |
b4b56033 MLI |
4696 | } |
4697 | ||
4698 | /* Parse the else body of an if statement. This is just parsing a | |
4699 | statement but (a) it is a block in C99, (b) we handle an empty body | |
4700 | specially for the sake of -Wempty-body warnings. */ | |
4701 | ||
4702 | static tree | |
4703 | c_parser_else_body (c_parser *parser) | |
4704 | { | |
c2255bc4 | 4705 | location_t else_loc = c_parser_peek_token (parser)->location; |
b4b56033 MLI |
4706 | tree block = c_begin_compound_stmt (flag_isoc99); |
4707 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4708 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4709 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4710 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4711 | c_parser_label (parser); | |
4712 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4713 | { | |
c2255bc4 AH |
4714 | location_t loc = c_parser_peek_token (parser)->location; |
4715 | warning_at (loc, | |
626c34b5 PB |
4716 | OPT_Wempty_body, |
4717 | "suggest braces around empty body in an %<else%> statement"); | |
c2255bc4 | 4718 | add_stmt (build_empty_stmt (loc)); |
b4b56033 MLI |
4719 | c_parser_consume_token (parser); |
4720 | } | |
b8698a0f | 4721 | else |
b4b56033 | 4722 | c_parser_statement_after_labels (parser); |
c2255bc4 | 4723 | return c_end_compound_stmt (else_loc, block, flag_isoc99); |
27bf414c JM |
4724 | } |
4725 | ||
4726 | /* Parse an if statement (C90 6.6.4, C99 6.8.4). | |
4727 | ||
4728 | if-statement: | |
4729 | if ( expression ) statement | |
4730 | if ( expression ) statement else statement | |
4731 | */ | |
4732 | ||
4733 | static void | |
4734 | c_parser_if_statement (c_parser *parser) | |
4735 | { | |
4736 | tree block; | |
4737 | location_t loc; | |
4738 | tree cond; | |
b4b56033 | 4739 | bool first_if = false; |
27bf414c | 4740 | tree first_body, second_body; |
b4b56033 | 4741 | bool in_if_block; |
36536d79 | 4742 | tree if_stmt; |
b4b56033 | 4743 | |
27bf414c JM |
4744 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF)); |
4745 | c_parser_consume_token (parser); | |
4746 | block = c_begin_compound_stmt (flag_isoc99); | |
4747 | loc = c_parser_peek_token (parser)->location; | |
4748 | cond = c_parser_paren_condition (parser); | |
b4b56033 MLI |
4749 | in_if_block = parser->in_if_block; |
4750 | parser->in_if_block = true; | |
27bf414c | 4751 | first_body = c_parser_if_body (parser, &first_if); |
b4b56033 | 4752 | parser->in_if_block = in_if_block; |
27bf414c JM |
4753 | if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4754 | { | |
4755 | c_parser_consume_token (parser); | |
b4b56033 | 4756 | second_body = c_parser_else_body (parser); |
27bf414c JM |
4757 | } |
4758 | else | |
4759 | second_body = NULL_TREE; | |
4760 | c_finish_if_stmt (loc, cond, first_body, second_body, first_if); | |
36536d79 BI |
4761 | if_stmt = c_end_compound_stmt (loc, block, flag_isoc99); |
4762 | ||
4763 | /* If the if statement contains array notations, then we expand them. */ | |
4764 | if (flag_enable_cilkplus && contains_array_notation_expr (if_stmt)) | |
4765 | if_stmt = fix_conditional_array_notations (if_stmt); | |
4766 | add_stmt (if_stmt); | |
27bf414c JM |
4767 | } |
4768 | ||
4769 | /* Parse a switch statement (C90 6.6.4, C99 6.8.4). | |
4770 | ||
4771 | switch-statement: | |
4772 | switch (expression) statement | |
4773 | */ | |
4774 | ||
4775 | static void | |
4776 | c_parser_switch_statement (c_parser *parser) | |
4777 | { | |
4778 | tree block, expr, body, save_break; | |
c2255bc4 AH |
4779 | location_t switch_loc = c_parser_peek_token (parser)->location; |
4780 | location_t switch_cond_loc; | |
27bf414c JM |
4781 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH)); |
4782 | c_parser_consume_token (parser); | |
4783 | block = c_begin_compound_stmt (flag_isoc99); | |
4784 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4785 | { | |
c2255bc4 | 4786 | switch_cond_loc = c_parser_peek_token (parser)->location; |
27bf414c | 4787 | expr = c_parser_expression (parser).value; |
36536d79 BI |
4788 | if (flag_enable_cilkplus && contains_array_notation_expr (expr)) |
4789 | { | |
4790 | error_at (switch_cond_loc, | |
4791 | "array notations cannot be used as a condition for switch " | |
4792 | "statement"); | |
4793 | expr = error_mark_node; | |
4794 | } | |
27bf414c JM |
4795 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4796 | } | |
4797 | else | |
c2255bc4 AH |
4798 | { |
4799 | switch_cond_loc = UNKNOWN_LOCATION; | |
4800 | expr = error_mark_node; | |
4801 | } | |
4802 | c_start_case (switch_loc, switch_cond_loc, expr); | |
27bf414c JM |
4803 | save_break = c_break_label; |
4804 | c_break_label = NULL_TREE; | |
4805 | body = c_parser_c99_block_statement (parser); | |
4806 | c_finish_case (body); | |
4807 | if (c_break_label) | |
c2255bc4 AH |
4808 | { |
4809 | location_t here = c_parser_peek_token (parser)->location; | |
4810 | tree t = build1 (LABEL_EXPR, void_type_node, c_break_label); | |
4811 | SET_EXPR_LOCATION (t, here); | |
4812 | add_stmt (t); | |
4813 | } | |
27bf414c | 4814 | c_break_label = save_break; |
c2255bc4 | 4815 | add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99)); |
27bf414c JM |
4816 | } |
4817 | ||
4818 | /* Parse a while statement (C90 6.6.5, C99 6.8.5). | |
4819 | ||
4820 | while-statement: | |
4821 | while (expression) statement | |
4822 | */ | |
4823 | ||
4824 | static void | |
4825 | c_parser_while_statement (c_parser *parser) | |
4826 | { | |
4827 | tree block, cond, body, save_break, save_cont; | |
4828 | location_t loc; | |
4829 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE)); | |
4830 | c_parser_consume_token (parser); | |
4831 | block = c_begin_compound_stmt (flag_isoc99); | |
4832 | loc = c_parser_peek_token (parser)->location; | |
4833 | cond = c_parser_paren_condition (parser); | |
36536d79 BI |
4834 | if (flag_enable_cilkplus && contains_array_notation_expr (cond)) |
4835 | { | |
4836 | error_at (loc, "array notations cannot be used as a condition for while " | |
4837 | "statement"); | |
4838 | cond = error_mark_node; | |
4839 | } | |
27bf414c JM |
4840 | save_break = c_break_label; |
4841 | c_break_label = NULL_TREE; | |
4842 | save_cont = c_cont_label; | |
4843 | c_cont_label = NULL_TREE; | |
4844 | body = c_parser_c99_block_statement (parser); | |
4845 | c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true); | |
c2255bc4 | 4846 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4847 | c_break_label = save_break; |
4848 | c_cont_label = save_cont; | |
4849 | } | |
4850 | ||
4851 | /* Parse a do statement (C90 6.6.5, C99 6.8.5). | |
4852 | ||
4853 | do-statement: | |
4854 | do statement while ( expression ) ; | |
4855 | */ | |
4856 | ||
4857 | static void | |
4858 | c_parser_do_statement (c_parser *parser) | |
4859 | { | |
4860 | tree block, cond, body, save_break, save_cont, new_break, new_cont; | |
4861 | location_t loc; | |
4862 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO)); | |
4863 | c_parser_consume_token (parser); | |
62e00e94 | 4864 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3ba09659 AH |
4865 | warning_at (c_parser_peek_token (parser)->location, |
4866 | OPT_Wempty_body, | |
4867 | "suggest braces around empty body in %<do%> statement"); | |
27bf414c JM |
4868 | block = c_begin_compound_stmt (flag_isoc99); |
4869 | loc = c_parser_peek_token (parser)->location; | |
4870 | save_break = c_break_label; | |
4871 | c_break_label = NULL_TREE; | |
4872 | save_cont = c_cont_label; | |
4873 | c_cont_label = NULL_TREE; | |
4874 | body = c_parser_c99_block_statement (parser); | |
4875 | c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>"); | |
4876 | new_break = c_break_label; | |
4877 | c_break_label = save_break; | |
4878 | new_cont = c_cont_label; | |
4879 | c_cont_label = save_cont; | |
4880 | cond = c_parser_paren_condition (parser); | |
36536d79 BI |
4881 | if (flag_enable_cilkplus && contains_array_notation_expr (cond)) |
4882 | { | |
4883 | error_at (loc, "array notations cannot be used as a condition for a " | |
4884 | "do-while statement"); | |
4885 | cond = error_mark_node; | |
4886 | } | |
4887 | ||
27bf414c JM |
4888 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
4889 | c_parser_skip_to_end_of_block_or_statement (parser); | |
4890 | c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false); | |
c2255bc4 | 4891 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4892 | } |
4893 | ||
4894 | /* Parse a for statement (C90 6.6.5, C99 6.8.5). | |
4895 | ||
4896 | for-statement: | |
4897 | for ( expression[opt] ; expression[opt] ; expression[opt] ) statement | |
4898 | for ( nested-declaration expression[opt] ; expression[opt] ) statement | |
4899 | ||
4900 | The form with a declaration is new in C99. | |
4901 | ||
4902 | ??? In accordance with the old parser, the declaration may be a | |
4903 | nested function, which is then rejected in check_for_loop_decls, | |
4904 | but does it make any sense for this to be included in the grammar? | |
4905 | Note in particular that the nested function does not include a | |
4906 | trailing ';', whereas the "declaration" production includes one. | |
4907 | Also, can we reject bad declarations earlier and cheaper than | |
f05b9d93 NP |
4908 | check_for_loop_decls? |
4909 | ||
4910 | In Objective-C, there are two additional variants: | |
4911 | ||
4912 | foreach-statement: | |
4913 | for ( expression in expresssion ) statement | |
4914 | for ( declaration in expression ) statement | |
4915 | ||
4916 | This is inconsistent with C, because the second variant is allowed | |
4917 | even if c99 is not enabled. | |
4918 | ||
4919 | The rest of the comment documents these Objective-C foreach-statement. | |
4920 | ||
4921 | Here is the canonical example of the first variant: | |
4922 | for (object in array) { do something with object } | |
4923 | we call the first expression ("object") the "object_expression" and | |
4924 | the second expression ("array") the "collection_expression". | |
4925 | object_expression must be an lvalue of type "id" (a generic Objective-C | |
4926 | object) because the loop works by assigning to object_expression the | |
4927 | various objects from the collection_expression. collection_expression | |
4928 | must evaluate to something of type "id" which responds to the method | |
4929 | countByEnumeratingWithState:objects:count:. | |
4930 | ||
4931 | The canonical example of the second variant is: | |
4932 | for (id object in array) { do something with object } | |
4933 | which is completely equivalent to | |
4934 | { | |
4935 | id object; | |
4936 | for (object in array) { do something with object } | |
4937 | } | |
4938 | Note that initizializing 'object' in some way (eg, "for ((object = | |
4939 | xxx) in array) { do something with object }") is possibly | |
4940 | technically valid, but completely pointless as 'object' will be | |
4941 | assigned to something else as soon as the loop starts. We should | |
4942 | most likely reject it (TODO). | |
4943 | ||
4944 | The beginning of the Objective-C foreach-statement looks exactly | |
4945 | like the beginning of the for-statement, and we can tell it is a | |
4946 | foreach-statement only because the initial declaration or | |
4947 | expression is terminated by 'in' instead of ';'. | |
4948 | */ | |
27bf414c JM |
4949 | |
4950 | static void | |
4951 | c_parser_for_statement (c_parser *parser) | |
4952 | { | |
4953 | tree block, cond, incr, save_break, save_cont, body; | |
f05b9d93 | 4954 | /* The following are only used when parsing an ObjC foreach statement. */ |
689f2c82 AO |
4955 | tree object_expression; |
4956 | /* Silence the bogus uninitialized warning. */ | |
4957 | tree collection_expression = NULL; | |
c2255bc4 AH |
4958 | location_t loc = c_parser_peek_token (parser)->location; |
4959 | location_t for_loc = c_parser_peek_token (parser)->location; | |
f05b9d93 | 4960 | bool is_foreach_statement = false; |
27bf414c JM |
4961 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR)); |
4962 | c_parser_consume_token (parser); | |
f05b9d93 NP |
4963 | /* Open a compound statement in Objective-C as well, just in case this is |
4964 | as foreach expression. */ | |
4965 | block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ()); | |
91b90ead UB |
4966 | cond = error_mark_node; |
4967 | incr = error_mark_node; | |
27bf414c JM |
4968 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
4969 | { | |
4970 | /* Parse the initialization declaration or expression. */ | |
f05b9d93 | 4971 | object_expression = error_mark_node; |
a5812bdc | 4972 | parser->objc_could_be_foreach_context = c_dialect_objc (); |
27bf414c JM |
4973 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
4974 | { | |
a5812bdc | 4975 | parser->objc_could_be_foreach_context = false; |
27bf414c | 4976 | c_parser_consume_token (parser); |
c2255bc4 | 4977 | c_finish_expr_stmt (loc, NULL_TREE); |
27bf414c | 4978 | } |
2f413185 | 4979 | else if (c_parser_next_tokens_start_declaration (parser)) |
27bf414c | 4980 | { |
f05b9d93 NP |
4981 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, |
4982 | &object_expression); | |
4983 | parser->objc_could_be_foreach_context = false; | |
4984 | ||
4985 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
4986 | { | |
4987 | c_parser_consume_token (parser); | |
4988 | is_foreach_statement = true; | |
4989 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
4990 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
4991 | } | |
4992 | else | |
4993 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
4994 | } |
4995 | else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4996 | { | |
4997 | /* __extension__ can start a declaration, but is also an | |
4998 | unary operator that can start an expression. Consume all | |
4999 | but the last of a possible series of __extension__ to | |
5000 | determine which. */ | |
5001 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
5002 | && (c_parser_peek_2nd_token (parser)->keyword | |
5003 | == RID_EXTENSION)) | |
5004 | c_parser_consume_token (parser); | |
32912286 | 5005 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
5006 | { |
5007 | int ext; | |
5008 | ext = disable_extension_diagnostics (); | |
5009 | c_parser_consume_token (parser); | |
32912286 | 5010 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 NP |
5011 | true, &object_expression); |
5012 | parser->objc_could_be_foreach_context = false; | |
5013 | ||
27bf414c | 5014 | restore_extension_diagnostics (ext); |
f05b9d93 NP |
5015 | if (c_parser_next_token_is_keyword (parser, RID_IN)) |
5016 | { | |
5017 | c_parser_consume_token (parser); | |
5018 | is_foreach_statement = true; | |
5019 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
5020 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
5021 | } | |
5022 | else | |
5023 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
5024 | } |
5025 | else | |
5026 | goto init_expr; | |
5027 | } | |
5028 | else | |
5029 | { | |
5030 | init_expr: | |
f05b9d93 NP |
5031 | { |
5032 | tree init_expression; | |
f05b9d93 NP |
5033 | init_expression = c_parser_expression (parser).value; |
5034 | parser->objc_could_be_foreach_context = false; | |
5035 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
5036 | { | |
5037 | c_parser_consume_token (parser); | |
5038 | is_foreach_statement = true; | |
5039 | if (! lvalue_p (init_expression)) | |
5040 | c_parser_error (parser, "invalid iterating variable in fast enumeration"); | |
69a97201 | 5041 | object_expression = c_fully_fold (init_expression, false, NULL); |
f05b9d93 NP |
5042 | } |
5043 | else | |
5044 | { | |
5045 | c_finish_expr_stmt (loc, init_expression); | |
5046 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
5047 | } | |
5048 | } | |
27bf414c | 5049 | } |
f05b9d93 NP |
5050 | /* Parse the loop condition. In the case of a foreach |
5051 | statement, there is no loop condition. */ | |
a5812bdc | 5052 | gcc_assert (!parser->objc_could_be_foreach_context); |
f05b9d93 | 5053 | if (!is_foreach_statement) |
27bf414c | 5054 | { |
f05b9d93 NP |
5055 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5056 | { | |
5057 | c_parser_consume_token (parser); | |
5058 | cond = NULL_TREE; | |
5059 | } | |
5060 | else | |
5061 | { | |
5062 | cond = c_parser_condition (parser); | |
36536d79 BI |
5063 | if (flag_enable_cilkplus && contains_array_notation_expr (cond)) |
5064 | { | |
5065 | error_at (loc, "array notations cannot be used in a " | |
5066 | "condition for a for-loop"); | |
5067 | cond = error_mark_node; | |
5068 | } | |
5069 | c_parser_skip_until_found (parser, CPP_SEMICOLON, | |
5070 | "expected %<;%>"); | |
f05b9d93 | 5071 | } |
27bf414c | 5072 | } |
f05b9d93 NP |
5073 | /* Parse the increment expression (the third expression in a |
5074 | for-statement). In the case of a foreach-statement, this is | |
5075 | the expression that follows the 'in'. */ | |
5076 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
27bf414c | 5077 | { |
f05b9d93 NP |
5078 | if (is_foreach_statement) |
5079 | { | |
5080 | c_parser_error (parser, "missing collection in fast enumeration"); | |
5081 | collection_expression = error_mark_node; | |
5082 | } | |
5083 | else | |
5084 | incr = c_process_expr_stmt (loc, NULL_TREE); | |
27bf414c | 5085 | } |
27bf414c | 5086 | else |
f05b9d93 NP |
5087 | { |
5088 | if (is_foreach_statement) | |
69a97201 NP |
5089 | collection_expression = c_fully_fold (c_parser_expression (parser).value, |
5090 | false, NULL); | |
f05b9d93 NP |
5091 | else |
5092 | incr = c_process_expr_stmt (loc, c_parser_expression (parser).value); | |
5093 | } | |
27bf414c JM |
5094 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5095 | } | |
27bf414c JM |
5096 | save_break = c_break_label; |
5097 | c_break_label = NULL_TREE; | |
5098 | save_cont = c_cont_label; | |
5099 | c_cont_label = NULL_TREE; | |
5100 | body = c_parser_c99_block_statement (parser); | |
f05b9d93 NP |
5101 | if (is_foreach_statement) |
5102 | objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label); | |
5103 | else | |
5104 | c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true); | |
5105 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ())); | |
27bf414c JM |
5106 | c_break_label = save_break; |
5107 | c_cont_label = save_cont; | |
5108 | } | |
5109 | ||
5110 | /* Parse an asm statement, a GNU extension. This is a full-blown asm | |
5111 | statement with inputs, outputs, clobbers, and volatile tag | |
5112 | allowed. | |
5113 | ||
5114 | asm-statement: | |
5115 | asm type-qualifier[opt] ( asm-argument ) ; | |
1c384bf1 | 5116 | asm type-qualifier[opt] goto ( asm-goto-argument ) ; |
27bf414c JM |
5117 | |
5118 | asm-argument: | |
5119 | asm-string-literal | |
5120 | asm-string-literal : asm-operands[opt] | |
5121 | asm-string-literal : asm-operands[opt] : asm-operands[opt] | |
1c384bf1 RH |
5122 | asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt] |
5123 | ||
5124 | asm-goto-argument: | |
5125 | asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \ | |
5126 | : asm-goto-operands | |
27bf414c JM |
5127 | |
5128 | Qualifiers other than volatile are accepted in the syntax but | |
5129 | warned for. */ | |
5130 | ||
5131 | static tree | |
5132 | c_parser_asm_statement (c_parser *parser) | |
5133 | { | |
1c384bf1 RH |
5134 | tree quals, str, outputs, inputs, clobbers, labels, ret; |
5135 | bool simple, is_goto; | |
c2255bc4 | 5136 | location_t asm_loc = c_parser_peek_token (parser)->location; |
1c384bf1 RH |
5137 | int section, nsections; |
5138 | ||
27bf414c JM |
5139 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); |
5140 | c_parser_consume_token (parser); | |
5141 | if (c_parser_next_token_is_keyword (parser, RID_VOLATILE)) | |
5142 | { | |
5143 | quals = c_parser_peek_token (parser)->value; | |
5144 | c_parser_consume_token (parser); | |
5145 | } | |
5146 | else if (c_parser_next_token_is_keyword (parser, RID_CONST) | |
5147 | || c_parser_next_token_is_keyword (parser, RID_RESTRICT)) | |
5148 | { | |
3ba09659 AH |
5149 | warning_at (c_parser_peek_token (parser)->location, |
5150 | 0, | |
5151 | "%E qualifier ignored on asm", | |
5152 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
5153 | quals = NULL_TREE; |
5154 | c_parser_consume_token (parser); | |
5155 | } | |
5156 | else | |
5157 | quals = NULL_TREE; | |
1c384bf1 RH |
5158 | |
5159 | is_goto = false; | |
5160 | if (c_parser_next_token_is_keyword (parser, RID_GOTO)) | |
5161 | { | |
5162 | c_parser_consume_token (parser); | |
5163 | is_goto = true; | |
5164 | } | |
5165 | ||
27bf414c | 5166 | /* ??? Follow the C++ parser rather than using the |
46c2514e TT |
5167 | lex_untranslated_string kludge. */ |
5168 | parser->lex_untranslated_string = true; | |
1c384bf1 RH |
5169 | ret = NULL; |
5170 | ||
27bf414c | 5171 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
1c384bf1 RH |
5172 | goto error; |
5173 | ||
27bf414c | 5174 | str = c_parser_asm_string_literal (parser); |
b85eb797 | 5175 | if (str == NULL_TREE) |
1c384bf1 RH |
5176 | goto error_close_paren; |
5177 | ||
5178 | simple = true; | |
5179 | outputs = NULL_TREE; | |
5180 | inputs = NULL_TREE; | |
5181 | clobbers = NULL_TREE; | |
5182 | labels = NULL_TREE; | |
5183 | ||
5184 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5185 | goto done_asm; | |
5186 | ||
5187 | /* Parse each colon-delimited section of operands. */ | |
5188 | nsections = 3 + is_goto; | |
5189 | for (section = 0; section < nsections; ++section) | |
b85eb797 | 5190 | { |
1c384bf1 RH |
5191 | if (!c_parser_require (parser, CPP_COLON, |
5192 | is_goto | |
5193 | ? "expected %<:%>" | |
5194 | : "expected %<:%> or %<)%>")) | |
5195 | goto error_close_paren; | |
5196 | ||
5197 | /* Once past any colon, we're no longer a simple asm. */ | |
5198 | simple = false; | |
5199 | ||
5200 | if ((!c_parser_next_token_is (parser, CPP_COLON) | |
5201 | && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
5202 | || section == 3) | |
5203 | switch (section) | |
5204 | { | |
5205 | case 0: | |
5206 | /* For asm goto, we don't allow output operands, but reserve | |
5207 | the slot for a future extension that does allow them. */ | |
5208 | if (!is_goto) | |
eadd3d0d | 5209 | outputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5210 | break; |
5211 | case 1: | |
eadd3d0d | 5212 | inputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5213 | break; |
5214 | case 2: | |
5215 | clobbers = c_parser_asm_clobbers (parser); | |
5216 | break; | |
5217 | case 3: | |
5218 | labels = c_parser_asm_goto_operands (parser); | |
5219 | break; | |
5220 | default: | |
5221 | gcc_unreachable (); | |
5222 | } | |
5223 | ||
5224 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5225 | goto done_asm; | |
27bf414c | 5226 | } |
1c384bf1 | 5227 | |
27bf414c | 5228 | done_asm: |
27bf414c JM |
5229 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5230 | { | |
5231 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
1c384bf1 | 5232 | goto error; |
27bf414c | 5233 | } |
1c384bf1 | 5234 | |
27bf414c JM |
5235 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5236 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1c384bf1 | 5237 | |
c2255bc4 | 5238 | ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs, |
1c384bf1 RH |
5239 | clobbers, labels, simple)); |
5240 | ||
5241 | error: | |
5242 | parser->lex_untranslated_string = false; | |
27bf414c | 5243 | return ret; |
1c384bf1 RH |
5244 | |
5245 | error_close_paren: | |
5246 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5247 | goto error; | |
27bf414c JM |
5248 | } |
5249 | ||
eadd3d0d | 5250 | /* Parse asm operands, a GNU extension. |
27bf414c JM |
5251 | |
5252 | asm-operands: | |
5253 | asm-operand | |
5254 | asm-operands , asm-operand | |
5255 | ||
5256 | asm-operand: | |
5257 | asm-string-literal ( expression ) | |
5258 | [ identifier ] asm-string-literal ( expression ) | |
5259 | */ | |
5260 | ||
5261 | static tree | |
eadd3d0d | 5262 | c_parser_asm_operands (c_parser *parser) |
27bf414c JM |
5263 | { |
5264 | tree list = NULL_TREE; | |
5265 | while (true) | |
5266 | { | |
f2a71bbc JM |
5267 | tree name, str; |
5268 | struct c_expr expr; | |
27bf414c JM |
5269 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) |
5270 | { | |
5271 | c_parser_consume_token (parser); | |
5272 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5273 | { | |
5274 | tree id = c_parser_peek_token (parser)->value; | |
5275 | c_parser_consume_token (parser); | |
5276 | name = build_string (IDENTIFIER_LENGTH (id), | |
5277 | IDENTIFIER_POINTER (id)); | |
5278 | } | |
5279 | else | |
5280 | { | |
5281 | c_parser_error (parser, "expected identifier"); | |
5282 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
5283 | return NULL_TREE; | |
5284 | } | |
5285 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
5286 | "expected %<]%>"); | |
5287 | } | |
5288 | else | |
5289 | name = NULL_TREE; | |
5290 | str = c_parser_asm_string_literal (parser); | |
5291 | if (str == NULL_TREE) | |
5292 | return NULL_TREE; | |
46c2514e | 5293 | parser->lex_untranslated_string = false; |
27bf414c JM |
5294 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5295 | { | |
46c2514e | 5296 | parser->lex_untranslated_string = true; |
27bf414c JM |
5297 | return NULL_TREE; |
5298 | } | |
f2a71bbc | 5299 | expr = c_parser_expression (parser); |
ebfbbdc5 | 5300 | mark_exp_read (expr.value); |
46c2514e | 5301 | parser->lex_untranslated_string = true; |
27bf414c JM |
5302 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5303 | { | |
5304 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5305 | return NULL_TREE; | |
5306 | } | |
5307 | list = chainon (list, build_tree_list (build_tree_list (name, str), | |
f2a71bbc | 5308 | expr.value)); |
27bf414c JM |
5309 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
5310 | c_parser_consume_token (parser); | |
5311 | else | |
5312 | break; | |
5313 | } | |
5314 | return list; | |
5315 | } | |
5316 | ||
5317 | /* Parse asm clobbers, a GNU extension. | |
5318 | ||
5319 | asm-clobbers: | |
5320 | asm-string-literal | |
5321 | asm-clobbers , asm-string-literal | |
5322 | */ | |
5323 | ||
5324 | static tree | |
5325 | c_parser_asm_clobbers (c_parser *parser) | |
5326 | { | |
5327 | tree list = NULL_TREE; | |
5328 | while (true) | |
5329 | { | |
5330 | tree str = c_parser_asm_string_literal (parser); | |
5331 | if (str) | |
5332 | list = tree_cons (NULL_TREE, str, list); | |
5333 | else | |
5334 | return NULL_TREE; | |
5335 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5336 | c_parser_consume_token (parser); | |
5337 | else | |
5338 | break; | |
5339 | } | |
5340 | return list; | |
5341 | } | |
5342 | ||
1c384bf1 | 5343 | /* Parse asm goto labels, a GNU extension. |
b8698a0f | 5344 | |
1c384bf1 RH |
5345 | asm-goto-operands: |
5346 | identifier | |
5347 | asm-goto-operands , identifier | |
5348 | */ | |
5349 | ||
5350 | static tree | |
5351 | c_parser_asm_goto_operands (c_parser *parser) | |
5352 | { | |
5353 | tree list = NULL_TREE; | |
5354 | while (true) | |
5355 | { | |
5356 | tree name, label; | |
5357 | ||
5358 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5359 | { | |
5360 | c_token *tok = c_parser_peek_token (parser); | |
5361 | name = tok->value; | |
5362 | label = lookup_label_for_goto (tok->location, name); | |
5363 | c_parser_consume_token (parser); | |
5364 | TREE_USED (label) = 1; | |
5365 | } | |
5366 | else | |
5367 | { | |
5368 | c_parser_error (parser, "expected identifier"); | |
5369 | return NULL_TREE; | |
5370 | } | |
5371 | ||
5372 | name = build_string (IDENTIFIER_LENGTH (name), | |
5373 | IDENTIFIER_POINTER (name)); | |
5374 | list = tree_cons (name, label, list); | |
5375 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5376 | c_parser_consume_token (parser); | |
5377 | else | |
5378 | return nreverse (list); | |
5379 | } | |
5380 | } | |
5381 | ||
27bf414c JM |
5382 | /* Parse an expression other than a compound expression; that is, an |
5383 | assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not | |
5384 | NULL then it is an Objective-C message expression which is the | |
5385 | primary-expression starting the expression as an initializer. | |
5386 | ||
5387 | assignment-expression: | |
5388 | conditional-expression | |
5389 | unary-expression assignment-operator assignment-expression | |
5390 | ||
5391 | assignment-operator: one of | |
5392 | = *= /= %= += -= <<= >>= &= ^= |= | |
5393 | ||
5394 | In GNU C we accept any conditional expression on the LHS and | |
5395 | diagnose the invalid lvalue rather than producing a syntax | |
5396 | error. */ | |
5397 | ||
5398 | static struct c_expr | |
5399 | c_parser_expr_no_commas (c_parser *parser, struct c_expr *after) | |
5400 | { | |
5401 | struct c_expr lhs, rhs, ret; | |
5402 | enum tree_code code; | |
c2255bc4 | 5403 | location_t op_location, exp_location; |
27bf414c JM |
5404 | gcc_assert (!after || c_dialect_objc ()); |
5405 | lhs = c_parser_conditional_expression (parser, after); | |
c9f9eb5d | 5406 | op_location = c_parser_peek_token (parser)->location; |
27bf414c JM |
5407 | switch (c_parser_peek_token (parser)->type) |
5408 | { | |
5409 | case CPP_EQ: | |
5410 | code = NOP_EXPR; | |
5411 | break; | |
5412 | case CPP_MULT_EQ: | |
5413 | code = MULT_EXPR; | |
5414 | break; | |
5415 | case CPP_DIV_EQ: | |
5416 | code = TRUNC_DIV_EXPR; | |
5417 | break; | |
5418 | case CPP_MOD_EQ: | |
5419 | code = TRUNC_MOD_EXPR; | |
5420 | break; | |
5421 | case CPP_PLUS_EQ: | |
5422 | code = PLUS_EXPR; | |
5423 | break; | |
5424 | case CPP_MINUS_EQ: | |
5425 | code = MINUS_EXPR; | |
5426 | break; | |
5427 | case CPP_LSHIFT_EQ: | |
5428 | code = LSHIFT_EXPR; | |
5429 | break; | |
5430 | case CPP_RSHIFT_EQ: | |
5431 | code = RSHIFT_EXPR; | |
5432 | break; | |
5433 | case CPP_AND_EQ: | |
5434 | code = BIT_AND_EXPR; | |
5435 | break; | |
5436 | case CPP_XOR_EQ: | |
5437 | code = BIT_XOR_EXPR; | |
5438 | break; | |
5439 | case CPP_OR_EQ: | |
5440 | code = BIT_IOR_EXPR; | |
5441 | break; | |
5442 | default: | |
5443 | return lhs; | |
5444 | } | |
5445 | c_parser_consume_token (parser); | |
c2255bc4 | 5446 | exp_location = c_parser_peek_token (parser)->location; |
27bf414c | 5447 | rhs = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 | 5448 | rhs = default_function_array_read_conversion (exp_location, rhs); |
36536d79 | 5449 | |
25c22937 BI |
5450 | ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type, |
5451 | code, exp_location, rhs.value, | |
5452 | rhs.original_type); | |
27bf414c JM |
5453 | if (code == NOP_EXPR) |
5454 | ret.original_code = MODIFY_EXPR; | |
5455 | else | |
5456 | { | |
5457 | TREE_NO_WARNING (ret.value) = 1; | |
5458 | ret.original_code = ERROR_MARK; | |
5459 | } | |
6866c6e8 | 5460 | ret.original_type = NULL; |
27bf414c JM |
5461 | return ret; |
5462 | } | |
5463 | ||
5464 | /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER | |
5465 | is not NULL then it is an Objective-C message expression which is | |
5466 | the primary-expression starting the expression as an initializer. | |
5467 | ||
5468 | conditional-expression: | |
5469 | logical-OR-expression | |
5470 | logical-OR-expression ? expression : conditional-expression | |
5471 | ||
5472 | GNU extensions: | |
5473 | ||
5474 | conditional-expression: | |
5475 | logical-OR-expression ? : conditional-expression | |
5476 | */ | |
5477 | ||
5478 | static struct c_expr | |
5479 | c_parser_conditional_expression (c_parser *parser, struct c_expr *after) | |
5480 | { | |
5481 | struct c_expr cond, exp1, exp2, ret; | |
d166d4c3 | 5482 | location_t cond_loc, colon_loc, middle_loc; |
ba47d38d | 5483 | |
27bf414c | 5484 | gcc_assert (!after || c_dialect_objc ()); |
ba47d38d | 5485 | |
20906c66 | 5486 | cond = c_parser_binary_expression (parser, after, PREC_NONE); |
ba47d38d | 5487 | |
27bf414c JM |
5488 | if (c_parser_next_token_is_not (parser, CPP_QUERY)) |
5489 | return cond; | |
c2255bc4 | 5490 | cond_loc = c_parser_peek_token (parser)->location; |
ebfbbdc5 | 5491 | cond = default_function_array_read_conversion (cond_loc, cond); |
27bf414c JM |
5492 | c_parser_consume_token (parser); |
5493 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
5494 | { | |
8ce94e44 | 5495 | tree eptype = NULL_TREE; |
d166d4c3 AK |
5496 | |
5497 | middle_loc = c_parser_peek_token (parser)->location; | |
c1771a20 | 5498 | pedwarn (middle_loc, OPT_Wpedantic, |
509c9d60 | 5499 | "ISO C forbids omitting the middle term of a ?: expression"); |
d166d4c3 | 5500 | warn_for_omitted_condop (middle_loc, cond.value); |
8ce94e44 JM |
5501 | if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR) |
5502 | { | |
5503 | eptype = TREE_TYPE (cond.value); | |
5504 | cond.value = TREE_OPERAND (cond.value, 0); | |
5505 | } | |
27bf414c | 5506 | /* Make sure first operand is calculated only once. */ |
928c19bb | 5507 | exp1.value = c_save_expr (default_conversion (cond.value)); |
8ce94e44 JM |
5508 | if (eptype) |
5509 | exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value); | |
6866c6e8 | 5510 | exp1.original_type = NULL; |
ba47d38d | 5511 | cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value); |
7d882b83 | 5512 | c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node; |
27bf414c JM |
5513 | } |
5514 | else | |
5515 | { | |
5516 | cond.value | |
85498824 | 5517 | = c_objc_common_truthvalue_conversion |
ba47d38d | 5518 | (cond_loc, default_conversion (cond.value)); |
7d882b83 | 5519 | c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node; |
46bdb9cf | 5520 | exp1 = c_parser_expression_conv (parser); |
ebfbbdc5 | 5521 | mark_exp_read (exp1.value); |
7d882b83 ILT |
5522 | c_inhibit_evaluation_warnings += |
5523 | ((cond.value == truthvalue_true_node) | |
5524 | - (cond.value == truthvalue_false_node)); | |
27bf414c | 5525 | } |
744aa42f ILT |
5526 | |
5527 | colon_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
5528 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
5529 | { | |
7d882b83 | 5530 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
27bf414c JM |
5531 | ret.value = error_mark_node; |
5532 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5533 | ret.original_type = NULL; |
27bf414c JM |
5534 | return ret; |
5535 | } | |
c2255bc4 AH |
5536 | { |
5537 | location_t exp2_loc = c_parser_peek_token (parser)->location; | |
5538 | exp2 = c_parser_conditional_expression (parser, NULL); | |
ebfbbdc5 | 5539 | exp2 = default_function_array_read_conversion (exp2_loc, exp2); |
c2255bc4 | 5540 | } |
7d882b83 | 5541 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
744aa42f | 5542 | ret.value = build_conditional_expr (colon_loc, cond.value, |
928c19bb | 5543 | cond.original_code == C_MAYBE_CONST_EXPR, |
d130ae11 ILT |
5544 | exp1.value, exp1.original_type, |
5545 | exp2.value, exp2.original_type); | |
27bf414c | 5546 | ret.original_code = ERROR_MARK; |
6866c6e8 ILT |
5547 | if (exp1.value == error_mark_node || exp2.value == error_mark_node) |
5548 | ret.original_type = NULL; | |
5549 | else | |
5550 | { | |
5551 | tree t1, t2; | |
5552 | ||
5553 | /* If both sides are enum type, the default conversion will have | |
5554 | made the type of the result be an integer type. We want to | |
5555 | remember the enum types we started with. */ | |
5556 | t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value); | |
5557 | t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value); | |
5558 | ret.original_type = ((t1 != error_mark_node | |
5559 | && t2 != error_mark_node | |
5560 | && (TYPE_MAIN_VARIANT (t1) | |
5561 | == TYPE_MAIN_VARIANT (t2))) | |
5562 | ? t1 | |
5563 | : NULL); | |
5564 | } | |
27bf414c JM |
5565 | return ret; |
5566 | } | |
5567 | ||
5568 | /* Parse a binary expression; that is, a logical-OR-expression (C90 | |
5569 | 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is | |
5570 | an Objective-C message expression which is the primary-expression | |
20906c66 JJ |
5571 | starting the expression as an initializer. PREC is the starting |
5572 | precedence, usually PREC_NONE. | |
27bf414c JM |
5573 | |
5574 | multiplicative-expression: | |
5575 | cast-expression | |
5576 | multiplicative-expression * cast-expression | |
5577 | multiplicative-expression / cast-expression | |
5578 | multiplicative-expression % cast-expression | |
5579 | ||
5580 | additive-expression: | |
5581 | multiplicative-expression | |
5582 | additive-expression + multiplicative-expression | |
5583 | additive-expression - multiplicative-expression | |
5584 | ||
5585 | shift-expression: | |
5586 | additive-expression | |
5587 | shift-expression << additive-expression | |
5588 | shift-expression >> additive-expression | |
5589 | ||
5590 | relational-expression: | |
5591 | shift-expression | |
5592 | relational-expression < shift-expression | |
5593 | relational-expression > shift-expression | |
5594 | relational-expression <= shift-expression | |
5595 | relational-expression >= shift-expression | |
5596 | ||
5597 | equality-expression: | |
5598 | relational-expression | |
5599 | equality-expression == relational-expression | |
5600 | equality-expression != relational-expression | |
5601 | ||
5602 | AND-expression: | |
5603 | equality-expression | |
5604 | AND-expression & equality-expression | |
5605 | ||
5606 | exclusive-OR-expression: | |
5607 | AND-expression | |
5608 | exclusive-OR-expression ^ AND-expression | |
5609 | ||
5610 | inclusive-OR-expression: | |
5611 | exclusive-OR-expression | |
5612 | inclusive-OR-expression | exclusive-OR-expression | |
5613 | ||
5614 | logical-AND-expression: | |
5615 | inclusive-OR-expression | |
5616 | logical-AND-expression && inclusive-OR-expression | |
5617 | ||
5618 | logical-OR-expression: | |
5619 | logical-AND-expression | |
5620 | logical-OR-expression || logical-AND-expression | |
5621 | */ | |
5622 | ||
5623 | static struct c_expr | |
20906c66 JJ |
5624 | c_parser_binary_expression (c_parser *parser, struct c_expr *after, |
5625 | enum c_parser_prec prec) | |
27bf414c JM |
5626 | { |
5627 | /* A binary expression is parsed using operator-precedence parsing, | |
5628 | with the operands being cast expressions. All the binary | |
5629 | operators are left-associative. Thus a binary expression is of | |
5630 | form: | |
5631 | ||
5632 | E0 op1 E1 op2 E2 ... | |
5633 | ||
5634 | which we represent on a stack. On the stack, the precedence | |
5635 | levels are strictly increasing. When a new operator is | |
5636 | encountered of higher precedence than that at the top of the | |
5637 | stack, it is pushed; its LHS is the top expression, and its RHS | |
5638 | is everything parsed until it is popped. When a new operator is | |
5639 | encountered with precedence less than or equal to that at the top | |
5640 | of the stack, triples E[i-1] op[i] E[i] are popped and replaced | |
5641 | by the result of the operation until the operator at the top of | |
5642 | the stack has lower precedence than the new operator or there is | |
5643 | only one element on the stack; then the top expression is the LHS | |
5644 | of the new operator. In the case of logical AND and OR | |
7d882b83 ILT |
5645 | expressions, we also need to adjust c_inhibit_evaluation_warnings |
5646 | as appropriate when the operators are pushed and popped. */ | |
27bf414c | 5647 | |
27bf414c JM |
5648 | struct { |
5649 | /* The expression at this stack level. */ | |
5650 | struct c_expr expr; | |
5651 | /* The precedence of the operator on its left, PREC_NONE at the | |
5652 | bottom of the stack. */ | |
20906c66 | 5653 | enum c_parser_prec prec; |
27bf414c JM |
5654 | /* The operation on its left. */ |
5655 | enum tree_code op; | |
ca80e52b EB |
5656 | /* The source location of this operation. */ |
5657 | location_t loc; | |
27bf414c JM |
5658 | } stack[NUM_PRECS]; |
5659 | int sp; | |
ba47d38d | 5660 | /* Location of the binary operator. */ |
1f6d0c60 | 5661 | location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
5662 | #define POP \ |
5663 | do { \ | |
5664 | switch (stack[sp].op) \ | |
5665 | { \ | |
5666 | case TRUTH_ANDIF_EXPR: \ | |
7d882b83 ILT |
5667 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5668 | == truthvalue_false_node); \ | |
27bf414c JM |
5669 | break; \ |
5670 | case TRUTH_ORIF_EXPR: \ | |
7d882b83 ILT |
5671 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5672 | == truthvalue_true_node); \ | |
27bf414c JM |
5673 | break; \ |
5674 | default: \ | |
5675 | break; \ | |
5676 | } \ | |
f2a71bbc | 5677 | stack[sp - 1].expr \ |
ebfbbdc5 JJ |
5678 | = default_function_array_read_conversion (stack[sp - 1].loc, \ |
5679 | stack[sp - 1].expr); \ | |
f2a71bbc | 5680 | stack[sp].expr \ |
ebfbbdc5 JJ |
5681 | = default_function_array_read_conversion (stack[sp].loc, \ |
5682 | stack[sp].expr); \ | |
ca80e52b | 5683 | stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \ |
ba47d38d | 5684 | stack[sp].op, \ |
27bf414c JM |
5685 | stack[sp - 1].expr, \ |
5686 | stack[sp].expr); \ | |
5687 | sp--; \ | |
5688 | } while (0) | |
5689 | gcc_assert (!after || c_dialect_objc ()); | |
ca80e52b | 5690 | stack[0].loc = c_parser_peek_token (parser)->location; |
27bf414c | 5691 | stack[0].expr = c_parser_cast_expression (parser, after); |
20906c66 | 5692 | stack[0].prec = prec; |
27bf414c JM |
5693 | sp = 0; |
5694 | while (true) | |
5695 | { | |
20906c66 | 5696 | enum c_parser_prec oprec; |
27bf414c JM |
5697 | enum tree_code ocode; |
5698 | if (parser->error) | |
5699 | goto out; | |
5700 | switch (c_parser_peek_token (parser)->type) | |
5701 | { | |
5702 | case CPP_MULT: | |
5703 | oprec = PREC_MULT; | |
5704 | ocode = MULT_EXPR; | |
5705 | break; | |
5706 | case CPP_DIV: | |
5707 | oprec = PREC_MULT; | |
5708 | ocode = TRUNC_DIV_EXPR; | |
5709 | break; | |
5710 | case CPP_MOD: | |
5711 | oprec = PREC_MULT; | |
5712 | ocode = TRUNC_MOD_EXPR; | |
5713 | break; | |
5714 | case CPP_PLUS: | |
5715 | oprec = PREC_ADD; | |
5716 | ocode = PLUS_EXPR; | |
5717 | break; | |
5718 | case CPP_MINUS: | |
5719 | oprec = PREC_ADD; | |
5720 | ocode = MINUS_EXPR; | |
5721 | break; | |
5722 | case CPP_LSHIFT: | |
5723 | oprec = PREC_SHIFT; | |
5724 | ocode = LSHIFT_EXPR; | |
5725 | break; | |
5726 | case CPP_RSHIFT: | |
5727 | oprec = PREC_SHIFT; | |
5728 | ocode = RSHIFT_EXPR; | |
5729 | break; | |
5730 | case CPP_LESS: | |
5731 | oprec = PREC_REL; | |
5732 | ocode = LT_EXPR; | |
5733 | break; | |
5734 | case CPP_GREATER: | |
5735 | oprec = PREC_REL; | |
5736 | ocode = GT_EXPR; | |
5737 | break; | |
5738 | case CPP_LESS_EQ: | |
5739 | oprec = PREC_REL; | |
5740 | ocode = LE_EXPR; | |
5741 | break; | |
5742 | case CPP_GREATER_EQ: | |
5743 | oprec = PREC_REL; | |
5744 | ocode = GE_EXPR; | |
5745 | break; | |
5746 | case CPP_EQ_EQ: | |
5747 | oprec = PREC_EQ; | |
5748 | ocode = EQ_EXPR; | |
5749 | break; | |
5750 | case CPP_NOT_EQ: | |
5751 | oprec = PREC_EQ; | |
5752 | ocode = NE_EXPR; | |
5753 | break; | |
5754 | case CPP_AND: | |
5755 | oprec = PREC_BITAND; | |
5756 | ocode = BIT_AND_EXPR; | |
5757 | break; | |
5758 | case CPP_XOR: | |
5759 | oprec = PREC_BITXOR; | |
5760 | ocode = BIT_XOR_EXPR; | |
5761 | break; | |
5762 | case CPP_OR: | |
5763 | oprec = PREC_BITOR; | |
5764 | ocode = BIT_IOR_EXPR; | |
5765 | break; | |
5766 | case CPP_AND_AND: | |
5767 | oprec = PREC_LOGAND; | |
5768 | ocode = TRUTH_ANDIF_EXPR; | |
5769 | break; | |
5770 | case CPP_OR_OR: | |
5771 | oprec = PREC_LOGOR; | |
5772 | ocode = TRUTH_ORIF_EXPR; | |
5773 | break; | |
5774 | default: | |
5775 | /* Not a binary operator, so end of the binary | |
5776 | expression. */ | |
5777 | goto out; | |
5778 | } | |
ba47d38d | 5779 | binary_loc = c_parser_peek_token (parser)->location; |
27bf414c | 5780 | while (oprec <= stack[sp].prec) |
20906c66 JJ |
5781 | { |
5782 | if (sp == 0) | |
5783 | goto out; | |
5784 | POP; | |
5785 | } | |
5786 | c_parser_consume_token (parser); | |
27bf414c JM |
5787 | switch (ocode) |
5788 | { | |
5789 | case TRUTH_ANDIF_EXPR: | |
f2a71bbc | 5790 | stack[sp].expr |
ebfbbdc5 JJ |
5791 | = default_function_array_read_conversion (stack[sp].loc, |
5792 | stack[sp].expr); | |
85498824 | 5793 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5794 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5795 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5796 | == truthvalue_false_node); | |
27bf414c JM |
5797 | break; |
5798 | case TRUTH_ORIF_EXPR: | |
f2a71bbc | 5799 | stack[sp].expr |
ebfbbdc5 JJ |
5800 | = default_function_array_read_conversion (stack[sp].loc, |
5801 | stack[sp].expr); | |
85498824 | 5802 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5803 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5804 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5805 | == truthvalue_true_node); | |
27bf414c JM |
5806 | break; |
5807 | default: | |
5808 | break; | |
5809 | } | |
5810 | sp++; | |
ca80e52b | 5811 | stack[sp].loc = binary_loc; |
27bf414c JM |
5812 | stack[sp].expr = c_parser_cast_expression (parser, NULL); |
5813 | stack[sp].prec = oprec; | |
5814 | stack[sp].op = ocode; | |
c2255bc4 | 5815 | stack[sp].loc = binary_loc; |
27bf414c JM |
5816 | } |
5817 | out: | |
5818 | while (sp > 0) | |
5819 | POP; | |
5820 | return stack[0].expr; | |
5821 | #undef POP | |
5822 | } | |
5823 | ||
5824 | /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not | |
5825 | NULL then it is an Objective-C message expression which is the | |
5826 | primary-expression starting the expression as an initializer. | |
5827 | ||
5828 | cast-expression: | |
5829 | unary-expression | |
5830 | ( type-name ) unary-expression | |
5831 | */ | |
5832 | ||
5833 | static struct c_expr | |
5834 | c_parser_cast_expression (c_parser *parser, struct c_expr *after) | |
5835 | { | |
c2255bc4 | 5836 | location_t cast_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5837 | gcc_assert (!after || c_dialect_objc ()); |
5838 | if (after) | |
c2255bc4 AH |
5839 | return c_parser_postfix_expression_after_primary (parser, |
5840 | cast_loc, *after); | |
27bf414c JM |
5841 | /* If the expression begins with a parenthesized type name, it may |
5842 | be either a cast or a compound literal; we need to see whether | |
5843 | the next character is '{' to tell the difference. If not, it is | |
29ce73cb PB |
5844 | an unary expression. Full detection of unknown typenames here |
5845 | would require a 3-token lookahead. */ | |
27bf414c JM |
5846 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) |
5847 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5848 | { | |
5849 | struct c_type_name *type_name; | |
5850 | struct c_expr ret; | |
f2a71bbc | 5851 | struct c_expr expr; |
27bf414c JM |
5852 | c_parser_consume_token (parser); |
5853 | type_name = c_parser_type_name (parser); | |
5854 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5855 | if (type_name == NULL) | |
5856 | { | |
5857 | ret.value = error_mark_node; | |
5858 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5859 | ret.original_type = NULL; |
27bf414c JM |
5860 | return ret; |
5861 | } | |
33c9159e AH |
5862 | |
5863 | /* Save casted types in the function's used types hash table. */ | |
8d8d1a28 | 5864 | used_types_insert (type_name->specs->type); |
33c9159e | 5865 | |
27bf414c | 5866 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
24b97832 | 5867 | return c_parser_postfix_expression_after_paren_type (parser, type_name, |
c2255bc4 AH |
5868 | cast_loc); |
5869 | { | |
5870 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
5871 | expr = c_parser_cast_expression (parser, NULL); | |
ebfbbdc5 | 5872 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 AH |
5873 | } |
5874 | ret.value = c_cast_expr (cast_loc, type_name, expr.value); | |
27bf414c | 5875 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5876 | ret.original_type = NULL; |
27bf414c JM |
5877 | return ret; |
5878 | } | |
5879 | else | |
5880 | return c_parser_unary_expression (parser); | |
5881 | } | |
5882 | ||
5883 | /* Parse an unary expression (C90 6.3.3, C99 6.5.3). | |
5884 | ||
5885 | unary-expression: | |
5886 | postfix-expression | |
5887 | ++ unary-expression | |
5888 | -- unary-expression | |
5889 | unary-operator cast-expression | |
5890 | sizeof unary-expression | |
5891 | sizeof ( type-name ) | |
5892 | ||
5893 | unary-operator: one of | |
5894 | & * + - ~ ! | |
5895 | ||
5896 | GNU extensions: | |
5897 | ||
5898 | unary-expression: | |
5899 | __alignof__ unary-expression | |
5900 | __alignof__ ( type-name ) | |
5901 | && identifier | |
5902 | ||
48b0b196 | 5903 | (C11 permits _Alignof with type names only.) |
d19fa6b5 | 5904 | |
27bf414c JM |
5905 | unary-operator: one of |
5906 | __extension__ __real__ __imag__ | |
5907 | ||
0a35513e AH |
5908 | Transactional Memory: |
5909 | ||
5910 | unary-expression: | |
5911 | transaction-expression | |
5912 | ||
27bf414c JM |
5913 | In addition, the GNU syntax treats ++ and -- as unary operators, so |
5914 | they may be applied to cast expressions with errors for non-lvalues | |
5915 | given later. */ | |
5916 | ||
5917 | static struct c_expr | |
5918 | c_parser_unary_expression (c_parser *parser) | |
5919 | { | |
5920 | int ext; | |
46bdb9cf | 5921 | struct c_expr ret, op; |
c2255bc4 AH |
5922 | location_t op_loc = c_parser_peek_token (parser)->location; |
5923 | location_t exp_loc; | |
6866c6e8 ILT |
5924 | ret.original_code = ERROR_MARK; |
5925 | ret.original_type = NULL; | |
27bf414c JM |
5926 | switch (c_parser_peek_token (parser)->type) |
5927 | { | |
5928 | case CPP_PLUS_PLUS: | |
5929 | c_parser_consume_token (parser); | |
c2255bc4 | 5930 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5931 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
5932 | |
5933 | /* If there is array notations in op, we expand them. */ | |
5934 | if (flag_enable_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) | |
5935 | return fix_array_notation_expr (exp_loc, PREINCREMENT_EXPR, op); | |
5936 | else | |
5937 | { | |
5938 | op = default_function_array_read_conversion (exp_loc, op); | |
5939 | return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op); | |
5940 | } | |
27bf414c JM |
5941 | case CPP_MINUS_MINUS: |
5942 | c_parser_consume_token (parser); | |
c2255bc4 | 5943 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5944 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
5945 | |
5946 | /* If there is array notations in op, we expand them. */ | |
5947 | if (flag_enable_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) | |
5948 | return fix_array_notation_expr (exp_loc, PREDECREMENT_EXPR, op); | |
5949 | else | |
5950 | { | |
5951 | op = default_function_array_read_conversion (exp_loc, op); | |
5952 | return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op); | |
5953 | } | |
27bf414c JM |
5954 | case CPP_AND: |
5955 | c_parser_consume_token (parser); | |
ebfbbdc5 JJ |
5956 | op = c_parser_cast_expression (parser, NULL); |
5957 | mark_exp_read (op.value); | |
5958 | return parser_build_unary_op (op_loc, ADDR_EXPR, op); | |
27bf414c JM |
5959 | case CPP_MULT: |
5960 | c_parser_consume_token (parser); | |
c2255bc4 | 5961 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5962 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5963 | op = default_function_array_read_conversion (exp_loc, op); |
dd865ef6 | 5964 | ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR); |
27bf414c JM |
5965 | return ret; |
5966 | case CPP_PLUS: | |
44c21c7f | 5967 | if (!c_dialect_objc () && !in_system_header) |
c2255bc4 | 5968 | warning_at (op_loc, |
3ba09659 AH |
5969 | OPT_Wtraditional, |
5970 | "traditional C rejects the unary plus operator"); | |
c7412148 | 5971 | c_parser_consume_token (parser); |
c2255bc4 | 5972 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5973 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5974 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5975 | return parser_build_unary_op (op_loc, CONVERT_EXPR, op); |
27bf414c JM |
5976 | case CPP_MINUS: |
5977 | c_parser_consume_token (parser); | |
c2255bc4 | 5978 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5979 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5980 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5981 | return parser_build_unary_op (op_loc, NEGATE_EXPR, op); |
27bf414c JM |
5982 | case CPP_COMPL: |
5983 | c_parser_consume_token (parser); | |
c2255bc4 | 5984 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5985 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5986 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5987 | return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op); |
27bf414c JM |
5988 | case CPP_NOT: |
5989 | c_parser_consume_token (parser); | |
c2255bc4 | 5990 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5991 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5992 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5993 | return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op); |
27bf414c JM |
5994 | case CPP_AND_AND: |
5995 | /* Refer to the address of a label as a pointer. */ | |
5996 | c_parser_consume_token (parser); | |
5997 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5998 | { | |
5999 | ret.value = finish_label_address_expr | |
c2255bc4 | 6000 | (c_parser_peek_token (parser)->value, op_loc); |
27bf414c | 6001 | c_parser_consume_token (parser); |
27bf414c JM |
6002 | } |
6003 | else | |
6004 | { | |
6005 | c_parser_error (parser, "expected identifier"); | |
6006 | ret.value = error_mark_node; | |
27bf414c | 6007 | } |
43f6dfd3 | 6008 | return ret; |
27bf414c JM |
6009 | case CPP_KEYWORD: |
6010 | switch (c_parser_peek_token (parser)->keyword) | |
6011 | { | |
6012 | case RID_SIZEOF: | |
6013 | return c_parser_sizeof_expression (parser); | |
6014 | case RID_ALIGNOF: | |
6015 | return c_parser_alignof_expression (parser); | |
6016 | case RID_EXTENSION: | |
6017 | c_parser_consume_token (parser); | |
6018 | ext = disable_extension_diagnostics (); | |
6019 | ret = c_parser_cast_expression (parser, NULL); | |
6020 | restore_extension_diagnostics (ext); | |
6021 | return ret; | |
6022 | case RID_REALPART: | |
6023 | c_parser_consume_token (parser); | |
c2255bc4 | 6024 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6025 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6026 | op = default_function_array_conversion (exp_loc, op); |
6027 | return parser_build_unary_op (op_loc, REALPART_EXPR, op); | |
27bf414c JM |
6028 | case RID_IMAGPART: |
6029 | c_parser_consume_token (parser); | |
c2255bc4 | 6030 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6031 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6032 | op = default_function_array_conversion (exp_loc, op); |
6033 | return parser_build_unary_op (op_loc, IMAGPART_EXPR, op); | |
0a35513e AH |
6034 | case RID_TRANSACTION_ATOMIC: |
6035 | case RID_TRANSACTION_RELAXED: | |
6036 | return c_parser_transaction_expression (parser, | |
6037 | c_parser_peek_token (parser)->keyword); | |
27bf414c JM |
6038 | default: |
6039 | return c_parser_postfix_expression (parser); | |
6040 | } | |
6041 | default: | |
6042 | return c_parser_postfix_expression (parser); | |
6043 | } | |
6044 | } | |
6045 | ||
6046 | /* Parse a sizeof expression. */ | |
6047 | ||
6048 | static struct c_expr | |
6049 | c_parser_sizeof_expression (c_parser *parser) | |
6050 | { | |
6051 | struct c_expr expr; | |
c7412148 | 6052 | location_t expr_loc; |
27bf414c JM |
6053 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF)); |
6054 | c_parser_consume_token (parser); | |
7d882b83 | 6055 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6056 | in_sizeof++; |
6057 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6058 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6059 | { | |
6060 | /* Either sizeof ( type-name ) or sizeof unary-expression | |
6061 | starting with a compound literal. */ | |
6062 | struct c_type_name *type_name; | |
6063 | c_parser_consume_token (parser); | |
c7412148 | 6064 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6065 | type_name = c_parser_type_name (parser); |
6066 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6067 | if (type_name == NULL) | |
6068 | { | |
6069 | struct c_expr ret; | |
7d882b83 | 6070 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6071 | in_sizeof--; |
6072 | ret.value = error_mark_node; | |
6073 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6074 | ret.original_type = NULL; |
27bf414c JM |
6075 | return ret; |
6076 | } | |
6077 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6078 | { | |
6079 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6080 | type_name, |
6081 | expr_loc); | |
27bf414c JM |
6082 | goto sizeof_expr; |
6083 | } | |
6084 | /* sizeof ( type-name ). */ | |
7d882b83 | 6085 | c_inhibit_evaluation_warnings--; |
27bf414c | 6086 | in_sizeof--; |
c2255bc4 | 6087 | return c_expr_sizeof_type (expr_loc, type_name); |
27bf414c JM |
6088 | } |
6089 | else | |
6090 | { | |
c7412148 | 6091 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6092 | expr = c_parser_unary_expression (parser); |
6093 | sizeof_expr: | |
7d882b83 | 6094 | c_inhibit_evaluation_warnings--; |
27bf414c | 6095 | in_sizeof--; |
ebfbbdc5 | 6096 | mark_exp_read (expr.value); |
27bf414c JM |
6097 | if (TREE_CODE (expr.value) == COMPONENT_REF |
6098 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 6099 | error_at (expr_loc, "%<sizeof%> applied to a bit-field"); |
c2255bc4 | 6100 | return c_expr_sizeof_expr (expr_loc, expr); |
27bf414c JM |
6101 | } |
6102 | } | |
6103 | ||
6104 | /* Parse an alignof expression. */ | |
6105 | ||
6106 | static struct c_expr | |
6107 | c_parser_alignof_expression (c_parser *parser) | |
6108 | { | |
6109 | struct c_expr expr; | |
c2255bc4 | 6110 | location_t loc = c_parser_peek_token (parser)->location; |
d19fa6b5 | 6111 | tree alignof_spelling = c_parser_peek_token (parser)->value; |
27bf414c | 6112 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF)); |
d19fa6b5 | 6113 | /* A diagnostic is not required for the use of this identifier in |
48b0b196 | 6114 | the implementation namespace; only diagnose it for the C11 |
d19fa6b5 | 6115 | spelling because of existing code using the other spellings. */ |
48b0b196 | 6116 | if (!flag_isoc11 |
d19fa6b5 JM |
6117 | && strcmp (IDENTIFIER_POINTER (alignof_spelling), "_Alignof") == 0) |
6118 | { | |
6119 | if (flag_isoc99) | |
c1771a20 | 6120 | pedwarn (loc, OPT_Wpedantic, "ISO C99 does not support %qE", |
d19fa6b5 JM |
6121 | alignof_spelling); |
6122 | else | |
c1771a20 | 6123 | pedwarn (loc, OPT_Wpedantic, "ISO C90 does not support %qE", |
d19fa6b5 JM |
6124 | alignof_spelling); |
6125 | } | |
27bf414c | 6126 | c_parser_consume_token (parser); |
7d882b83 | 6127 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6128 | in_alignof++; |
6129 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6130 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6131 | { | |
6132 | /* Either __alignof__ ( type-name ) or __alignof__ | |
6133 | unary-expression starting with a compound literal. */ | |
24b97832 | 6134 | location_t loc; |
27bf414c JM |
6135 | struct c_type_name *type_name; |
6136 | struct c_expr ret; | |
6137 | c_parser_consume_token (parser); | |
24b97832 | 6138 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6139 | type_name = c_parser_type_name (parser); |
6140 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6141 | if (type_name == NULL) | |
6142 | { | |
6143 | struct c_expr ret; | |
7d882b83 | 6144 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6145 | in_alignof--; |
6146 | ret.value = error_mark_node; | |
6147 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6148 | ret.original_type = NULL; |
27bf414c JM |
6149 | return ret; |
6150 | } | |
6151 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6152 | { | |
6153 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6154 | type_name, |
6155 | loc); | |
27bf414c JM |
6156 | goto alignof_expr; |
6157 | } | |
6158 | /* alignof ( type-name ). */ | |
7d882b83 | 6159 | c_inhibit_evaluation_warnings--; |
27bf414c | 6160 | in_alignof--; |
c2255bc4 | 6161 | ret.value = c_alignof (loc, groktypename (type_name, NULL, NULL)); |
27bf414c | 6162 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6163 | ret.original_type = NULL; |
27bf414c JM |
6164 | return ret; |
6165 | } | |
6166 | else | |
6167 | { | |
6168 | struct c_expr ret; | |
6169 | expr = c_parser_unary_expression (parser); | |
6170 | alignof_expr: | |
ebfbbdc5 | 6171 | mark_exp_read (expr.value); |
7d882b83 | 6172 | c_inhibit_evaluation_warnings--; |
27bf414c | 6173 | in_alignof--; |
c1771a20 | 6174 | pedwarn (loc, OPT_Wpedantic, "ISO C does not allow %<%E (expression)%>", |
d19fa6b5 | 6175 | alignof_spelling); |
c2255bc4 | 6176 | ret.value = c_alignof_expr (loc, expr.value); |
27bf414c | 6177 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6178 | ret.original_type = NULL; |
27bf414c JM |
6179 | return ret; |
6180 | } | |
6181 | } | |
6182 | ||
f90e8e2e | 6183 | /* Helper function to read arguments of builtins which are interfaces |
2205ed25 | 6184 | for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and |
f90e8e2e AS |
6185 | others. The name of the builtin is passed using BNAME parameter. |
6186 | Function returns true if there were no errors while parsing and | |
86785830 | 6187 | stores the arguments in CEXPR_LIST. */ |
f90e8e2e AS |
6188 | static bool |
6189 | c_parser_get_builtin_args (c_parser *parser, const char *bname, | |
4e7d7b3d JJ |
6190 | vec<c_expr_t, va_gc> **ret_cexpr_list, |
6191 | bool choose_expr_p) | |
f90e8e2e AS |
6192 | { |
6193 | location_t loc = c_parser_peek_token (parser)->location; | |
9771b263 | 6194 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 | 6195 | c_expr_t expr; |
4e7d7b3d | 6196 | bool saved_force_folding_builtin_constant_p; |
f90e8e2e | 6197 | |
86785830 | 6198 | *ret_cexpr_list = NULL; |
f90e8e2e AS |
6199 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) |
6200 | { | |
6201 | error_at (loc, "cannot take address of %qs", bname); | |
6202 | return false; | |
6203 | } | |
6204 | ||
6205 | c_parser_consume_token (parser); | |
6206 | ||
6207 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
6208 | { | |
6209 | c_parser_consume_token (parser); | |
6210 | return true; | |
6211 | } | |
86785830 | 6212 | |
4e7d7b3d JJ |
6213 | saved_force_folding_builtin_constant_p |
6214 | = force_folding_builtin_constant_p; | |
6215 | force_folding_builtin_constant_p |= choose_expr_p; | |
86785830 | 6216 | expr = c_parser_expr_no_commas (parser, NULL); |
4e7d7b3d JJ |
6217 | force_folding_builtin_constant_p |
6218 | = saved_force_folding_builtin_constant_p; | |
9771b263 | 6219 | vec_alloc (cexpr_list, 1); |
86785830 AS |
6220 | C_EXPR_APPEND (cexpr_list, expr); |
6221 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
6222 | { | |
6223 | c_parser_consume_token (parser); | |
6224 | expr = c_parser_expr_no_commas (parser, NULL); | |
6225 | C_EXPR_APPEND (cexpr_list, expr); | |
6226 | } | |
f90e8e2e AS |
6227 | |
6228 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6229 | return false; | |
6230 | ||
86785830 | 6231 | *ret_cexpr_list = cexpr_list; |
f90e8e2e AS |
6232 | return true; |
6233 | } | |
6234 | ||
6235 | ||
27bf414c JM |
6236 | /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2). |
6237 | ||
6238 | postfix-expression: | |
6239 | primary-expression | |
6240 | postfix-expression [ expression ] | |
6241 | postfix-expression ( argument-expression-list[opt] ) | |
6242 | postfix-expression . identifier | |
6243 | postfix-expression -> identifier | |
6244 | postfix-expression ++ | |
6245 | postfix-expression -- | |
6246 | ( type-name ) { initializer-list } | |
6247 | ( type-name ) { initializer-list , } | |
6248 | ||
6249 | argument-expression-list: | |
6250 | argument-expression | |
6251 | argument-expression-list , argument-expression | |
6252 | ||
6253 | primary-expression: | |
6254 | identifier | |
6255 | constant | |
6256 | string-literal | |
6257 | ( expression ) | |
6258 | ||
6259 | GNU extensions: | |
6260 | ||
6261 | primary-expression: | |
6262 | __func__ | |
6263 | (treated as a keyword in GNU C) | |
6264 | __FUNCTION__ | |
6265 | __PRETTY_FUNCTION__ | |
6266 | ( compound-statement ) | |
6267 | __builtin_va_arg ( assignment-expression , type-name ) | |
6268 | __builtin_offsetof ( type-name , offsetof-member-designator ) | |
6269 | __builtin_choose_expr ( assignment-expression , | |
6270 | assignment-expression , | |
6271 | assignment-expression ) | |
6272 | __builtin_types_compatible_p ( type-name , type-name ) | |
d4a83c10 | 6273 | __builtin_complex ( assignment-expression , assignment-expression ) |
f90e8e2e AS |
6274 | __builtin_shuffle ( assignment-expression , assignment-expression ) |
6275 | __builtin_shuffle ( assignment-expression , | |
6276 | assignment-expression , | |
6277 | assignment-expression, ) | |
27bf414c JM |
6278 | |
6279 | offsetof-member-designator: | |
6280 | identifier | |
6281 | offsetof-member-designator . identifier | |
6282 | offsetof-member-designator [ expression ] | |
6283 | ||
6284 | Objective-C: | |
6285 | ||
6286 | primary-expression: | |
6287 | [ objc-receiver objc-message-args ] | |
6288 | @selector ( objc-selector-arg ) | |
6289 | @protocol ( identifier ) | |
6290 | @encode ( type-name ) | |
6291 | objc-string-literal | |
bede2adc | 6292 | Classname . identifier |
27bf414c JM |
6293 | */ |
6294 | ||
6295 | static struct c_expr | |
6296 | c_parser_postfix_expression (c_parser *parser) | |
6297 | { | |
f90e8e2e | 6298 | struct c_expr expr, e1; |
27bf414c | 6299 | struct c_type_name *t1, *t2; |
c2255bc4 | 6300 | location_t loc = c_parser_peek_token (parser)->location;; |
6866c6e8 ILT |
6301 | expr.original_code = ERROR_MARK; |
6302 | expr.original_type = NULL; | |
27bf414c JM |
6303 | switch (c_parser_peek_token (parser)->type) |
6304 | { | |
6305 | case CPP_NUMBER: | |
754ccf7c | 6306 | expr.value = c_parser_peek_token (parser)->value; |
754ccf7c JJ |
6307 | loc = c_parser_peek_token (parser)->location; |
6308 | c_parser_consume_token (parser); | |
6309 | if (TREE_CODE (expr.value) == FIXED_CST | |
6310 | && !targetm.fixed_point_supported_p ()) | |
6311 | { | |
6312 | error_at (loc, "fixed-point types not supported for this target"); | |
6313 | expr.value = error_mark_node; | |
6314 | } | |
6315 | break; | |
27bf414c | 6316 | case CPP_CHAR: |
b6baa67d KVH |
6317 | case CPP_CHAR16: |
6318 | case CPP_CHAR32: | |
27bf414c JM |
6319 | case CPP_WCHAR: |
6320 | expr.value = c_parser_peek_token (parser)->value; | |
27bf414c JM |
6321 | c_parser_consume_token (parser); |
6322 | break; | |
6323 | case CPP_STRING: | |
b6baa67d KVH |
6324 | case CPP_STRING16: |
6325 | case CPP_STRING32: | |
27bf414c | 6326 | case CPP_WSTRING: |
2c6e3f55 | 6327 | case CPP_UTF8STRING: |
27bf414c JM |
6328 | expr.value = c_parser_peek_token (parser)->value; |
6329 | expr.original_code = STRING_CST; | |
6330 | c_parser_consume_token (parser); | |
6331 | break; | |
6332 | case CPP_OBJC_STRING: | |
6333 | gcc_assert (c_dialect_objc ()); | |
6334 | expr.value | |
6335 | = objc_build_string_object (c_parser_peek_token (parser)->value); | |
27bf414c JM |
6336 | c_parser_consume_token (parser); |
6337 | break; | |
6338 | case CPP_NAME: | |
bede2adc | 6339 | switch (c_parser_peek_token (parser)->id_kind) |
27bf414c | 6340 | { |
bede2adc NP |
6341 | case C_ID_ID: |
6342 | { | |
6343 | tree id = c_parser_peek_token (parser)->value; | |
6344 | c_parser_consume_token (parser); | |
6345 | expr.value = build_external_ref (loc, id, | |
6346 | (c_parser_peek_token (parser)->type | |
6347 | == CPP_OPEN_PAREN), | |
6348 | &expr.original_type); | |
6349 | break; | |
6350 | } | |
6351 | case C_ID_CLASSNAME: | |
6352 | { | |
6353 | /* Here we parse the Objective-C 2.0 Class.name dot | |
6354 | syntax. */ | |
6355 | tree class_name = c_parser_peek_token (parser)->value; | |
6356 | tree component; | |
6357 | c_parser_consume_token (parser); | |
6358 | gcc_assert (c_dialect_objc ()); | |
6359 | if (!c_parser_require (parser, CPP_DOT, "expected %<.%>")) | |
6360 | { | |
6361 | expr.value = error_mark_node; | |
6362 | break; | |
6363 | } | |
6364 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6365 | { | |
6366 | c_parser_error (parser, "expected identifier"); | |
6367 | expr.value = error_mark_node; | |
6368 | break; | |
6369 | } | |
6370 | component = c_parser_peek_token (parser)->value; | |
6371 | c_parser_consume_token (parser); | |
6372 | expr.value = objc_build_class_component_ref (class_name, | |
6373 | component); | |
6374 | break; | |
6375 | } | |
6376 | default: | |
27bf414c JM |
6377 | c_parser_error (parser, "expected expression"); |
6378 | expr.value = error_mark_node; | |
27bf414c JM |
6379 | break; |
6380 | } | |
27bf414c JM |
6381 | break; |
6382 | case CPP_OPEN_PAREN: | |
6383 | /* A parenthesized expression, statement expression or compound | |
6384 | literal. */ | |
6385 | if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE) | |
6386 | { | |
6387 | /* A statement expression. */ | |
6388 | tree stmt; | |
c2255bc4 | 6389 | location_t brace_loc; |
27bf414c | 6390 | c_parser_consume_token (parser); |
c2255bc4 | 6391 | brace_loc = c_parser_peek_token (parser)->location; |
27bf414c | 6392 | c_parser_consume_token (parser); |
38e01f9e | 6393 | if (!building_stmt_list_p ()) |
27bf414c | 6394 | { |
c2255bc4 | 6395 | error_at (loc, "braced-group within expression allowed " |
3ba09659 | 6396 | "only inside a function"); |
27bf414c JM |
6397 | parser->error = true; |
6398 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
6399 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6400 | expr.value = error_mark_node; | |
27bf414c JM |
6401 | break; |
6402 | } | |
6403 | stmt = c_begin_stmt_expr (); | |
6404 | c_parser_compound_statement_nostart (parser); | |
6405 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6406 | "expected %<)%>"); | |
c1771a20 | 6407 | pedwarn (loc, OPT_Wpedantic, |
509c9d60 | 6408 | "ISO C forbids braced-groups within expressions"); |
c2255bc4 | 6409 | expr.value = c_finish_stmt_expr (brace_loc, stmt); |
82c3c067 | 6410 | mark_exp_read (expr.value); |
27bf414c JM |
6411 | } |
6412 | else if (c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6413 | { | |
6414 | /* A compound literal. ??? Can we actually get here rather | |
6415 | than going directly to | |
6416 | c_parser_postfix_expression_after_paren_type from | |
6417 | elsewhere? */ | |
24b97832 | 6418 | location_t loc; |
27bf414c JM |
6419 | struct c_type_name *type_name; |
6420 | c_parser_consume_token (parser); | |
24b97832 | 6421 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6422 | type_name = c_parser_type_name (parser); |
6423 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6424 | "expected %<)%>"); | |
6425 | if (type_name == NULL) | |
6426 | { | |
6427 | expr.value = error_mark_node; | |
27bf414c JM |
6428 | } |
6429 | else | |
6430 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6431 | type_name, |
6432 | loc); | |
27bf414c JM |
6433 | } |
6434 | else | |
6435 | { | |
6436 | /* A parenthesized expression. */ | |
6437 | c_parser_consume_token (parser); | |
6438 | expr = c_parser_expression (parser); | |
6439 | if (TREE_CODE (expr.value) == MODIFY_EXPR) | |
6440 | TREE_NO_WARNING (expr.value) = 1; | |
928c19bb JM |
6441 | if (expr.original_code != C_MAYBE_CONST_EXPR) |
6442 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6443 | /* Don't change EXPR.ORIGINAL_TYPE. */ |
27bf414c JM |
6444 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
6445 | "expected %<)%>"); | |
6446 | } | |
6447 | break; | |
6448 | case CPP_KEYWORD: | |
6449 | switch (c_parser_peek_token (parser)->keyword) | |
6450 | { | |
6451 | case RID_FUNCTION_NAME: | |
6452 | case RID_PRETTY_FUNCTION_NAME: | |
6453 | case RID_C99_FUNCTION_NAME: | |
c2255bc4 | 6454 | expr.value = fname_decl (loc, |
3ba09659 | 6455 | c_parser_peek_token (parser)->keyword, |
27bf414c | 6456 | c_parser_peek_token (parser)->value); |
27bf414c JM |
6457 | c_parser_consume_token (parser); |
6458 | break; | |
6459 | case RID_VA_ARG: | |
6460 | c_parser_consume_token (parser); | |
6461 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6462 | { | |
6463 | expr.value = error_mark_node; | |
27bf414c JM |
6464 | break; |
6465 | } | |
6466 | e1 = c_parser_expr_no_commas (parser, NULL); | |
ebfbbdc5 | 6467 | mark_exp_read (e1.value); |
928c19bb | 6468 | e1.value = c_fully_fold (e1.value, false, NULL); |
27bf414c JM |
6469 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
6470 | { | |
6471 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6472 | expr.value = error_mark_node; | |
27bf414c JM |
6473 | break; |
6474 | } | |
72b5577d | 6475 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6476 | t1 = c_parser_type_name (parser); |
6477 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6478 | "expected %<)%>"); | |
6479 | if (t1 == NULL) | |
6480 | { | |
6481 | expr.value = error_mark_node; | |
27bf414c JM |
6482 | } |
6483 | else | |
6484 | { | |
928c19bb | 6485 | tree type_expr = NULL_TREE; |
c2255bc4 AH |
6486 | expr.value = c_build_va_arg (loc, e1.value, |
6487 | groktypename (t1, &type_expr, NULL)); | |
928c19bb JM |
6488 | if (type_expr) |
6489 | { | |
6490 | expr.value = build2 (C_MAYBE_CONST_EXPR, | |
6491 | TREE_TYPE (expr.value), type_expr, | |
6492 | expr.value); | |
6493 | C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true; | |
6494 | } | |
27bf414c JM |
6495 | } |
6496 | break; | |
6497 | case RID_OFFSETOF: | |
6498 | c_parser_consume_token (parser); | |
6499 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6500 | { | |
6501 | expr.value = error_mark_node; | |
27bf414c JM |
6502 | break; |
6503 | } | |
6504 | t1 = c_parser_type_name (parser); | |
6505 | if (t1 == NULL) | |
29ce73cb | 6506 | parser->error = true; |
27bf414c | 6507 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
29ce73cb PB |
6508 | gcc_assert (parser->error); |
6509 | if (parser->error) | |
27bf414c JM |
6510 | { |
6511 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6512 | expr.value = error_mark_node; | |
27bf414c JM |
6513 | break; |
6514 | } | |
29ce73cb | 6515 | |
27bf414c | 6516 | { |
928c19bb | 6517 | tree type = groktypename (t1, NULL, NULL); |
27bf414c JM |
6518 | tree offsetof_ref; |
6519 | if (type == error_mark_node) | |
6520 | offsetof_ref = error_mark_node; | |
6521 | else | |
c2255bc4 AH |
6522 | { |
6523 | offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node); | |
6524 | SET_EXPR_LOCATION (offsetof_ref, loc); | |
6525 | } | |
27bf414c JM |
6526 | /* Parse the second argument to __builtin_offsetof. We |
6527 | must have one identifier, and beyond that we want to | |
6528 | accept sub structure and sub array references. */ | |
6529 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
6530 | { | |
6531 | offsetof_ref = build_component_ref | |
c2255bc4 | 6532 | (loc, offsetof_ref, c_parser_peek_token (parser)->value); |
27bf414c JM |
6533 | c_parser_consume_token (parser); |
6534 | while (c_parser_next_token_is (parser, CPP_DOT) | |
6535 | || c_parser_next_token_is (parser, | |
634b5df5 JJ |
6536 | CPP_OPEN_SQUARE) |
6537 | || c_parser_next_token_is (parser, | |
6538 | CPP_DEREF)) | |
27bf414c | 6539 | { |
634b5df5 JJ |
6540 | if (c_parser_next_token_is (parser, CPP_DEREF)) |
6541 | { | |
6542 | loc = c_parser_peek_token (parser)->location; | |
c2255bc4 AH |
6543 | offsetof_ref = build_array_ref (loc, |
6544 | offsetof_ref, | |
6545 | integer_zero_node); | |
634b5df5 JJ |
6546 | goto do_dot; |
6547 | } | |
6548 | else if (c_parser_next_token_is (parser, CPP_DOT)) | |
27bf414c | 6549 | { |
634b5df5 | 6550 | do_dot: |
27bf414c JM |
6551 | c_parser_consume_token (parser); |
6552 | if (c_parser_next_token_is_not (parser, | |
6553 | CPP_NAME)) | |
6554 | { | |
6555 | c_parser_error (parser, "expected identifier"); | |
6556 | break; | |
6557 | } | |
6558 | offsetof_ref = build_component_ref | |
c2255bc4 | 6559 | (loc, offsetof_ref, |
27bf414c JM |
6560 | c_parser_peek_token (parser)->value); |
6561 | c_parser_consume_token (parser); | |
6562 | } | |
6563 | else | |
6564 | { | |
6565 | tree idx; | |
6a3799eb | 6566 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6567 | c_parser_consume_token (parser); |
6568 | idx = c_parser_expression (parser).value; | |
928c19bb | 6569 | idx = c_fully_fold (idx, false, NULL); |
27bf414c JM |
6570 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, |
6571 | "expected %<]%>"); | |
c2255bc4 | 6572 | offsetof_ref = build_array_ref (loc, offsetof_ref, idx); |
27bf414c JM |
6573 | } |
6574 | } | |
6575 | } | |
6576 | else | |
6577 | c_parser_error (parser, "expected identifier"); | |
6578 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6579 | "expected %<)%>"); | |
cf9e9959 | 6580 | expr.value = fold_offsetof (offsetof_ref); |
27bf414c JM |
6581 | } |
6582 | break; | |
6583 | case RID_CHOOSE_EXPR: | |
27bf414c | 6584 | { |
9771b263 | 6585 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
6586 | c_expr_t *e1_p, *e2_p, *e3_p; |
6587 | tree c; | |
27bf414c | 6588 | |
f90e8e2e AS |
6589 | c_parser_consume_token (parser); |
6590 | if (!c_parser_get_builtin_args (parser, | |
6591 | "__builtin_choose_expr", | |
4e7d7b3d | 6592 | &cexpr_list, true)) |
f90e8e2e AS |
6593 | { |
6594 | expr.value = error_mark_node; | |
6595 | break; | |
6596 | } | |
6597 | ||
9771b263 | 6598 | if (vec_safe_length (cexpr_list) != 3) |
f90e8e2e AS |
6599 | { |
6600 | error_at (loc, "wrong number of arguments to " | |
6601 | "%<__builtin_choose_expr%>"); | |
6602 | expr.value = error_mark_node; | |
6603 | break; | |
6604 | } | |
86785830 | 6605 | |
9771b263 DN |
6606 | e1_p = &(*cexpr_list)[0]; |
6607 | e2_p = &(*cexpr_list)[1]; | |
6608 | e3_p = &(*cexpr_list)[2]; | |
86785830 AS |
6609 | |
6610 | c = e1_p->value; | |
6611 | mark_exp_read (e2_p->value); | |
6612 | mark_exp_read (e3_p->value); | |
928c19bb JM |
6613 | if (TREE_CODE (c) != INTEGER_CST |
6614 | || !INTEGRAL_TYPE_P (TREE_TYPE (c))) | |
3ba09659 AH |
6615 | error_at (loc, |
6616 | "first argument to %<__builtin_choose_expr%> not" | |
6617 | " a constant"); | |
928c19bb | 6618 | constant_expression_warning (c); |
86785830 | 6619 | expr = integer_zerop (c) ? *e3_p : *e2_p; |
f90e8e2e | 6620 | break; |
27bf414c | 6621 | } |
27bf414c JM |
6622 | case RID_TYPES_COMPATIBLE_P: |
6623 | c_parser_consume_token (parser); | |
6624 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6625 | { | |
6626 | expr.value = error_mark_node; | |
27bf414c JM |
6627 | break; |
6628 | } | |
6629 | t1 = c_parser_type_name (parser); | |
6630 | if (t1 == NULL) | |
6631 | { | |
6632 | expr.value = error_mark_node; | |
27bf414c JM |
6633 | break; |
6634 | } | |
6635 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6636 | { | |
6637 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6638 | expr.value = error_mark_node; | |
27bf414c JM |
6639 | break; |
6640 | } | |
6641 | t2 = c_parser_type_name (parser); | |
6642 | if (t2 == NULL) | |
6643 | { | |
6644 | expr.value = error_mark_node; | |
27bf414c JM |
6645 | break; |
6646 | } | |
6647 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6648 | "expected %<)%>"); | |
6649 | { | |
6650 | tree e1, e2; | |
9abfe986 AP |
6651 | e1 = groktypename (t1, NULL, NULL); |
6652 | e2 = groktypename (t2, NULL, NULL); | |
6653 | if (e1 == error_mark_node || e2 == error_mark_node) | |
6654 | { | |
6655 | expr.value = error_mark_node; | |
6656 | break; | |
6657 | } | |
27bf414c | 6658 | |
9abfe986 AP |
6659 | e1 = TYPE_MAIN_VARIANT (e1); |
6660 | e2 = TYPE_MAIN_VARIANT (e2); | |
27bf414c | 6661 | |
9a9d280e AS |
6662 | expr.value |
6663 | = comptypes (e1, e2) ? integer_one_node : integer_zero_node; | |
27bf414c JM |
6664 | } |
6665 | break; | |
d4a83c10 | 6666 | case RID_BUILTIN_COMPLEX: |
86785830 | 6667 | { |
9771b263 | 6668 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
6669 | c_expr_t *e1_p, *e2_p; |
6670 | ||
f90e8e2e AS |
6671 | c_parser_consume_token (parser); |
6672 | if (!c_parser_get_builtin_args (parser, | |
6673 | "__builtin_complex", | |
4e7d7b3d | 6674 | &cexpr_list, false)) |
f90e8e2e AS |
6675 | { |
6676 | expr.value = error_mark_node; | |
6677 | break; | |
6678 | } | |
6679 | ||
9771b263 | 6680 | if (vec_safe_length (cexpr_list) != 2) |
f90e8e2e AS |
6681 | { |
6682 | error_at (loc, "wrong number of arguments to " | |
6683 | "%<__builtin_complex%>"); | |
6684 | expr.value = error_mark_node; | |
6685 | break; | |
6686 | } | |
86785830 | 6687 | |
9771b263 DN |
6688 | e1_p = &(*cexpr_list)[0]; |
6689 | e2_p = &(*cexpr_list)[1]; | |
86785830 AS |
6690 | |
6691 | mark_exp_read (e1_p->value); | |
6692 | if (TREE_CODE (e1_p->value) == EXCESS_PRECISION_EXPR) | |
6693 | e1_p->value = convert (TREE_TYPE (e1_p->value), | |
6694 | TREE_OPERAND (e1_p->value, 0)); | |
6695 | mark_exp_read (e2_p->value); | |
6696 | if (TREE_CODE (e2_p->value) == EXCESS_PRECISION_EXPR) | |
6697 | e2_p->value = convert (TREE_TYPE (e2_p->value), | |
6698 | TREE_OPERAND (e2_p->value, 0)); | |
6699 | if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
6700 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
6701 | || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p->value)) | |
6702 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
6703 | { |
6704 | error_at (loc, "%<__builtin_complex%> operand " | |
6705 | "not of real binary floating-point type"); | |
6706 | expr.value = error_mark_node; | |
6707 | break; | |
6708 | } | |
86785830 AS |
6709 | if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p->value)) |
6710 | != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
6711 | { |
6712 | error_at (loc, | |
6713 | "%<__builtin_complex%> operands of different types"); | |
6714 | expr.value = error_mark_node; | |
6715 | break; | |
6716 | } | |
6717 | if (!flag_isoc99) | |
c1771a20 | 6718 | pedwarn (loc, OPT_Wpedantic, |
f90e8e2e AS |
6719 | "ISO C90 does not support complex types"); |
6720 | expr.value = build2 (COMPLEX_EXPR, | |
86785830 AS |
6721 | build_complex_type |
6722 | (TYPE_MAIN_VARIANT | |
6723 | (TREE_TYPE (e1_p->value))), | |
6724 | e1_p->value, e2_p->value); | |
f90e8e2e AS |
6725 | break; |
6726 | } | |
6727 | case RID_BUILTIN_SHUFFLE: | |
6728 | { | |
9771b263 | 6729 | vec<c_expr_t, va_gc> *cexpr_list; |
9243c51d JJ |
6730 | unsigned int i; |
6731 | c_expr_t *p; | |
86785830 | 6732 | |
f90e8e2e AS |
6733 | c_parser_consume_token (parser); |
6734 | if (!c_parser_get_builtin_args (parser, | |
6735 | "__builtin_shuffle", | |
4e7d7b3d | 6736 | &cexpr_list, false)) |
f90e8e2e AS |
6737 | { |
6738 | expr.value = error_mark_node; | |
6739 | break; | |
6740 | } | |
6741 | ||
9771b263 | 6742 | FOR_EACH_VEC_SAFE_ELT (cexpr_list, i, p) |
9243c51d JJ |
6743 | mark_exp_read (p->value); |
6744 | ||
9771b263 | 6745 | if (vec_safe_length (cexpr_list) == 2) |
86785830 | 6746 | expr.value = |
2205ed25 | 6747 | c_build_vec_perm_expr |
9771b263 DN |
6748 | (loc, (*cexpr_list)[0].value, |
6749 | NULL_TREE, (*cexpr_list)[1].value); | |
86785830 | 6750 | |
9771b263 | 6751 | else if (vec_safe_length (cexpr_list) == 3) |
86785830 | 6752 | expr.value = |
2205ed25 | 6753 | c_build_vec_perm_expr |
9771b263 DN |
6754 | (loc, (*cexpr_list)[0].value, |
6755 | (*cexpr_list)[1].value, | |
6756 | (*cexpr_list)[2].value); | |
f90e8e2e AS |
6757 | else |
6758 | { | |
6759 | error_at (loc, "wrong number of arguments to " | |
6760 | "%<__builtin_shuffle%>"); | |
6761 | expr.value = error_mark_node; | |
6762 | } | |
6763 | break; | |
6764 | } | |
27bf414c JM |
6765 | case RID_AT_SELECTOR: |
6766 | gcc_assert (c_dialect_objc ()); | |
6767 | c_parser_consume_token (parser); | |
6768 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6769 | { | |
6770 | expr.value = error_mark_node; | |
27bf414c JM |
6771 | break; |
6772 | } | |
6773 | { | |
6774 | tree sel = c_parser_objc_selector_arg (parser); | |
6775 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6776 | "expected %<)%>"); | |
c2255bc4 | 6777 | expr.value = objc_build_selector_expr (loc, sel); |
27bf414c JM |
6778 | } |
6779 | break; | |
6780 | case RID_AT_PROTOCOL: | |
6781 | gcc_assert (c_dialect_objc ()); | |
6782 | c_parser_consume_token (parser); | |
6783 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6784 | { | |
6785 | expr.value = error_mark_node; | |
27bf414c JM |
6786 | break; |
6787 | } | |
6788 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6789 | { | |
6790 | c_parser_error (parser, "expected identifier"); | |
6791 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6792 | expr.value = error_mark_node; | |
27bf414c JM |
6793 | break; |
6794 | } | |
6795 | { | |
6796 | tree id = c_parser_peek_token (parser)->value; | |
6797 | c_parser_consume_token (parser); | |
6798 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6799 | "expected %<)%>"); | |
6800 | expr.value = objc_build_protocol_expr (id); | |
27bf414c JM |
6801 | } |
6802 | break; | |
6803 | case RID_AT_ENCODE: | |
6804 | /* Extension to support C-structures in the archiver. */ | |
6805 | gcc_assert (c_dialect_objc ()); | |
6806 | c_parser_consume_token (parser); | |
6807 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6808 | { | |
6809 | expr.value = error_mark_node; | |
27bf414c JM |
6810 | break; |
6811 | } | |
6812 | t1 = c_parser_type_name (parser); | |
6813 | if (t1 == NULL) | |
6814 | { | |
6815 | expr.value = error_mark_node; | |
27bf414c JM |
6816 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
6817 | break; | |
6818 | } | |
6819 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6820 | "expected %<)%>"); | |
6821 | { | |
928c19bb | 6822 | tree type = groktypename (t1, NULL, NULL); |
27bf414c | 6823 | expr.value = objc_build_encode_expr (type); |
27bf414c JM |
6824 | } |
6825 | break; | |
6826 | default: | |
6827 | c_parser_error (parser, "expected expression"); | |
6828 | expr.value = error_mark_node; | |
27bf414c JM |
6829 | break; |
6830 | } | |
6831 | break; | |
6832 | case CPP_OPEN_SQUARE: | |
6833 | if (c_dialect_objc ()) | |
6834 | { | |
6835 | tree receiver, args; | |
6836 | c_parser_consume_token (parser); | |
6837 | receiver = c_parser_objc_receiver (parser); | |
6838 | args = c_parser_objc_message_args (parser); | |
6839 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6840 | "expected %<]%>"); | |
eb345401 | 6841 | expr.value = objc_build_message_expr (receiver, args); |
27bf414c JM |
6842 | break; |
6843 | } | |
6844 | /* Else fall through to report error. */ | |
6845 | default: | |
6846 | c_parser_error (parser, "expected expression"); | |
6847 | expr.value = error_mark_node; | |
27bf414c JM |
6848 | break; |
6849 | } | |
c2255bc4 | 6850 | return c_parser_postfix_expression_after_primary (parser, loc, expr); |
27bf414c JM |
6851 | } |
6852 | ||
6853 | /* Parse a postfix expression after a parenthesized type name: the | |
6854 | brace-enclosed initializer of a compound literal, possibly followed | |
6855 | by some postfix operators. This is separate because it is not | |
6856 | possible to tell until after the type name whether a cast | |
6857 | expression has a cast or a compound literal, or whether the operand | |
6858 | of sizeof is a parenthesized type name or starts with a compound | |
24b97832 ILT |
6859 | literal. TYPE_LOC is the location where TYPE_NAME starts--the |
6860 | location of the first token after the parentheses around the type | |
6861 | name. */ | |
27bf414c JM |
6862 | |
6863 | static struct c_expr | |
6864 | c_parser_postfix_expression_after_paren_type (c_parser *parser, | |
24b97832 ILT |
6865 | struct c_type_name *type_name, |
6866 | location_t type_loc) | |
27bf414c JM |
6867 | { |
6868 | tree type; | |
6869 | struct c_expr init; | |
928c19bb | 6870 | bool non_const; |
27bf414c | 6871 | struct c_expr expr; |
c7412148 | 6872 | location_t start_loc; |
928c19bb JM |
6873 | tree type_expr = NULL_TREE; |
6874 | bool type_expr_const = true; | |
c2255bc4 | 6875 | check_compound_literal_type (type_loc, type_name); |
27bf414c | 6876 | start_init (NULL_TREE, NULL, 0); |
928c19bb | 6877 | type = groktypename (type_name, &type_expr, &type_expr_const); |
c7412148 | 6878 | start_loc = c_parser_peek_token (parser)->location; |
85cad37c | 6879 | if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type)) |
27bf414c | 6880 | { |
24b97832 | 6881 | error_at (type_loc, "compound literal has variable size"); |
27bf414c JM |
6882 | type = error_mark_node; |
6883 | } | |
6884 | init = c_parser_braced_init (parser, type, false); | |
6885 | finish_init (); | |
6886 | maybe_warn_string_init (type, init); | |
6887 | ||
36c5e70a BE |
6888 | if (type != error_mark_node |
6889 | && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)) | |
6890 | && current_function_decl) | |
6891 | { | |
6892 | error ("compound literal qualified by address-space qualifier"); | |
6893 | type = error_mark_node; | |
6894 | } | |
6895 | ||
fcf73884 | 6896 | if (!flag_isoc99) |
c1771a20 | 6897 | pedwarn (start_loc, OPT_Wpedantic, "ISO C90 forbids compound literals"); |
928c19bb JM |
6898 | non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR) |
6899 | ? CONSTRUCTOR_NON_CONST (init.value) | |
6900 | : init.original_code == C_MAYBE_CONST_EXPR); | |
6901 | non_const |= !type_expr_const; | |
c2255bc4 | 6902 | expr.value = build_compound_literal (start_loc, type, init.value, non_const); |
27bf414c | 6903 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6904 | expr.original_type = NULL; |
928c19bb JM |
6905 | if (type_expr) |
6906 | { | |
6907 | if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR) | |
6908 | { | |
6909 | gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE); | |
6910 | C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr; | |
6911 | } | |
6912 | else | |
6913 | { | |
6914 | gcc_assert (!non_const); | |
6915 | expr.value = build2 (C_MAYBE_CONST_EXPR, type, | |
6916 | type_expr, expr.value); | |
6917 | } | |
6918 | } | |
c2255bc4 | 6919 | return c_parser_postfix_expression_after_primary (parser, start_loc, expr); |
27bf414c JM |
6920 | } |
6921 | ||
1a4049e7 JJ |
6922 | /* Callback function for sizeof_pointer_memaccess_warning to compare |
6923 | types. */ | |
6924 | ||
6925 | static bool | |
6926 | sizeof_ptr_memacc_comptypes (tree type1, tree type2) | |
6927 | { | |
6928 | return comptypes (type1, type2) == 1; | |
6929 | } | |
6930 | ||
27bf414c | 6931 | /* Parse a postfix expression after the initial primary or compound |
c2255bc4 AH |
6932 | literal; that is, parse a series of postfix operators. |
6933 | ||
6934 | EXPR_LOC is the location of the primary expression. */ | |
27bf414c JM |
6935 | |
6936 | static struct c_expr | |
6937 | c_parser_postfix_expression_after_primary (c_parser *parser, | |
c2255bc4 | 6938 | location_t expr_loc, |
27bf414c JM |
6939 | struct c_expr expr) |
6940 | { | |
928c19bb | 6941 | struct c_expr orig_expr; |
bbbbb16a | 6942 | tree ident, idx; |
3a785c97 JJ |
6943 | location_t sizeof_arg_loc[3]; |
6944 | tree sizeof_arg[3]; | |
6945 | unsigned int i; | |
9771b263 | 6946 | vec<tree, va_gc> *exprlist; |
2ee028f1 | 6947 | vec<tree, va_gc> *origtypes = NULL; |
27bf414c JM |
6948 | while (true) |
6949 | { | |
c2255bc4 | 6950 | location_t op_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6951 | switch (c_parser_peek_token (parser)->type) |
6952 | { | |
6953 | case CPP_OPEN_SQUARE: | |
6954 | /* Array reference. */ | |
6955 | c_parser_consume_token (parser); | |
36536d79 BI |
6956 | if (flag_enable_cilkplus |
6957 | && c_parser_peek_token (parser)->type == CPP_COLON) | |
6958 | /* If we are here, then we have something like this: | |
6959 | Array [ : ] | |
6960 | */ | |
6961 | expr.value = c_parser_array_notation (expr_loc, parser, NULL_TREE, | |
6962 | expr.value); | |
6963 | else | |
6964 | { | |
6965 | idx = c_parser_expression (parser).value; | |
6966 | /* Here we have 3 options: | |
6967 | 1. Array [EXPR] -- Normal Array call. | |
6968 | 2. Array [EXPR : EXPR] -- Array notation without stride. | |
6969 | 3. Array [EXPR : EXPR : EXPR] -- Array notation with stride. | |
6970 | ||
6971 | For 1, we just handle it just like a normal array expression. | |
6972 | For 2 and 3 we handle it like we handle array notations. The | |
6973 | idx value we have above becomes the initial/start index. | |
6974 | */ | |
6975 | if (flag_enable_cilkplus | |
6976 | && c_parser_peek_token (parser)->type == CPP_COLON) | |
6977 | expr.value = c_parser_array_notation (expr_loc, parser, idx, | |
6978 | expr.value); | |
6979 | else | |
6980 | { | |
6981 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6982 | "expected %<]%>"); | |
6983 | expr.value = build_array_ref (op_loc, expr.value, idx); | |
6984 | } | |
6985 | } | |
27bf414c | 6986 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6987 | expr.original_type = NULL; |
27bf414c JM |
6988 | break; |
6989 | case CPP_OPEN_PAREN: | |
6990 | /* Function call. */ | |
6991 | c_parser_consume_token (parser); | |
3a785c97 JJ |
6992 | for (i = 0; i < 3; i++) |
6993 | { | |
6994 | sizeof_arg[i] = NULL_TREE; | |
6995 | sizeof_arg_loc[i] = UNKNOWN_LOCATION; | |
6996 | } | |
27bf414c | 6997 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
bbbbb16a | 6998 | exprlist = NULL; |
27bf414c | 6999 | else |
1a4049e7 | 7000 | exprlist = c_parser_expr_list (parser, true, false, &origtypes, |
3a785c97 | 7001 | sizeof_arg_loc, sizeof_arg); |
27bf414c JM |
7002 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
7003 | "expected %<)%>"); | |
928c19bb | 7004 | orig_expr = expr; |
ebfbbdc5 | 7005 | mark_exp_read (expr.value); |
3a785c97 JJ |
7006 | if (warn_sizeof_pointer_memaccess) |
7007 | sizeof_pointer_memaccess_warning (sizeof_arg_loc, | |
1a4049e7 | 7008 | expr.value, exprlist, |
3a785c97 | 7009 | sizeof_arg, |
1a4049e7 | 7010 | sizeof_ptr_memacc_comptypes); |
c2255bc4 AH |
7011 | /* FIXME diagnostics: Ideally we want the FUNCNAME, not the |
7012 | "(" after the FUNCNAME, which is what we have now. */ | |
7013 | expr.value = build_function_call_vec (op_loc, expr.value, exprlist, | |
bbbbb16a | 7014 | origtypes); |
27bf414c | 7015 | expr.original_code = ERROR_MARK; |
928c19bb JM |
7016 | if (TREE_CODE (expr.value) == INTEGER_CST |
7017 | && TREE_CODE (orig_expr.value) == FUNCTION_DECL | |
7018 | && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL | |
7019 | && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P) | |
7020 | expr.original_code = C_MAYBE_CONST_EXPR; | |
6866c6e8 | 7021 | expr.original_type = NULL; |
9771b263 | 7022 | if (exprlist) |
bbbbb16a | 7023 | { |
c166b898 ILT |
7024 | release_tree_vector (exprlist); |
7025 | release_tree_vector (origtypes); | |
bbbbb16a | 7026 | } |
27bf414c JM |
7027 | break; |
7028 | case CPP_DOT: | |
7029 | /* Structure element reference. */ | |
7030 | c_parser_consume_token (parser); | |
c2255bc4 | 7031 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
7032 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7033 | ident = c_parser_peek_token (parser)->value; | |
7034 | else | |
7035 | { | |
7036 | c_parser_error (parser, "expected identifier"); | |
7037 | expr.value = error_mark_node; | |
7038 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7039 | expr.original_type = NULL; |
27bf414c JM |
7040 | return expr; |
7041 | } | |
7042 | c_parser_consume_token (parser); | |
c2255bc4 | 7043 | expr.value = build_component_ref (op_loc, expr.value, ident); |
27bf414c | 7044 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7045 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7046 | expr.original_type = NULL; | |
7047 | else | |
7048 | { | |
7049 | /* Remember the original type of a bitfield. */ | |
7050 | tree field = TREE_OPERAND (expr.value, 1); | |
7051 | if (TREE_CODE (field) != FIELD_DECL) | |
7052 | expr.original_type = NULL; | |
7053 | else | |
7054 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7055 | } | |
27bf414c JM |
7056 | break; |
7057 | case CPP_DEREF: | |
7058 | /* Structure element reference. */ | |
7059 | c_parser_consume_token (parser); | |
c2255bc4 | 7060 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
7061 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7062 | ident = c_parser_peek_token (parser)->value; | |
7063 | else | |
7064 | { | |
7065 | c_parser_error (parser, "expected identifier"); | |
7066 | expr.value = error_mark_node; | |
7067 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7068 | expr.original_type = NULL; |
27bf414c JM |
7069 | return expr; |
7070 | } | |
7071 | c_parser_consume_token (parser); | |
c2255bc4 AH |
7072 | expr.value = build_component_ref (op_loc, |
7073 | build_indirect_ref (op_loc, | |
c9f9eb5d | 7074 | expr.value, |
dd865ef6 | 7075 | RO_ARROW), |
6a3799eb | 7076 | ident); |
27bf414c | 7077 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7078 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7079 | expr.original_type = NULL; | |
7080 | else | |
7081 | { | |
7082 | /* Remember the original type of a bitfield. */ | |
7083 | tree field = TREE_OPERAND (expr.value, 1); | |
7084 | if (TREE_CODE (field) != FIELD_DECL) | |
7085 | expr.original_type = NULL; | |
7086 | else | |
7087 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7088 | } | |
27bf414c JM |
7089 | break; |
7090 | case CPP_PLUS_PLUS: | |
7091 | /* Postincrement. */ | |
7092 | c_parser_consume_token (parser); | |
36536d79 BI |
7093 | /* If the expressions have array notations, we expand them. */ |
7094 | if (flag_enable_cilkplus | |
7095 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) | |
7096 | expr = fix_array_notation_expr (expr_loc, POSTINCREMENT_EXPR, expr); | |
7097 | else | |
7098 | { | |
7099 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7100 | expr.value = build_unary_op (op_loc, | |
7101 | POSTINCREMENT_EXPR, expr.value, 0); | |
7102 | } | |
27bf414c | 7103 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7104 | expr.original_type = NULL; |
27bf414c JM |
7105 | break; |
7106 | case CPP_MINUS_MINUS: | |
7107 | /* Postdecrement. */ | |
7108 | c_parser_consume_token (parser); | |
36536d79 BI |
7109 | /* If the expressions have array notations, we expand them. */ |
7110 | if (flag_enable_cilkplus | |
7111 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) | |
7112 | expr = fix_array_notation_expr (expr_loc, POSTDECREMENT_EXPR, expr); | |
7113 | else | |
7114 | { | |
7115 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7116 | expr.value = build_unary_op (op_loc, | |
7117 | POSTDECREMENT_EXPR, expr.value, 0); | |
7118 | } | |
27bf414c | 7119 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7120 | expr.original_type = NULL; |
27bf414c JM |
7121 | break; |
7122 | default: | |
7123 | return expr; | |
7124 | } | |
7125 | } | |
7126 | } | |
7127 | ||
7128 | /* Parse an expression (C90 6.3.17, C99 6.5.17). | |
7129 | ||
7130 | expression: | |
7131 | assignment-expression | |
7132 | expression , assignment-expression | |
7133 | */ | |
7134 | ||
7135 | static struct c_expr | |
7136 | c_parser_expression (c_parser *parser) | |
7137 | { | |
7138 | struct c_expr expr; | |
7139 | expr = c_parser_expr_no_commas (parser, NULL); | |
7140 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
7141 | { | |
7142 | struct c_expr next; | |
056928b2 | 7143 | tree lhsval; |
c2255bc4 AH |
7144 | location_t loc = c_parser_peek_token (parser)->location; |
7145 | location_t expr_loc; | |
27bf414c | 7146 | c_parser_consume_token (parser); |
c2255bc4 | 7147 | expr_loc = c_parser_peek_token (parser)->location; |
056928b2 JJ |
7148 | lhsval = expr.value; |
7149 | while (TREE_CODE (lhsval) == COMPOUND_EXPR) | |
7150 | lhsval = TREE_OPERAND (lhsval, 1); | |
7151 | if (DECL_P (lhsval) || handled_component_p (lhsval)) | |
7152 | mark_exp_read (lhsval); | |
27bf414c | 7153 | next = c_parser_expr_no_commas (parser, NULL); |
c2255bc4 AH |
7154 | next = default_function_array_conversion (expr_loc, next); |
7155 | expr.value = build_compound_expr (loc, expr.value, next.value); | |
27bf414c | 7156 | expr.original_code = COMPOUND_EXPR; |
81f40b79 | 7157 | expr.original_type = next.original_type; |
27bf414c JM |
7158 | } |
7159 | return expr; | |
7160 | } | |
7161 | ||
46bdb9cf JM |
7162 | /* Parse an expression and convert functions or arrays to |
7163 | pointers. */ | |
7164 | ||
7165 | static struct c_expr | |
7166 | c_parser_expression_conv (c_parser *parser) | |
7167 | { | |
7168 | struct c_expr expr; | |
c2255bc4 | 7169 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 7170 | expr = c_parser_expression (parser); |
c2255bc4 | 7171 | expr = default_function_array_conversion (loc, expr); |
46bdb9cf JM |
7172 | return expr; |
7173 | } | |
7174 | ||
7175 | /* Parse a non-empty list of expressions. If CONVERT_P, convert | |
928c19bb | 7176 | functions and arrays to pointers. If FOLD_P, fold the expressions. |
27bf414c JM |
7177 | |
7178 | nonempty-expr-list: | |
7179 | assignment-expression | |
7180 | nonempty-expr-list , assignment-expression | |
7181 | */ | |
7182 | ||
9771b263 | 7183 | static vec<tree, va_gc> * |
bbbbb16a | 7184 | c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p, |
9771b263 DN |
7185 | vec<tree, va_gc> **p_orig_types, |
7186 | location_t *sizeof_arg_loc, tree *sizeof_arg) | |
27bf414c | 7187 | { |
9771b263 DN |
7188 | vec<tree, va_gc> *ret; |
7189 | vec<tree, va_gc> *orig_types; | |
27bf414c | 7190 | struct c_expr expr; |
c2255bc4 | 7191 | location_t loc = c_parser_peek_token (parser)->location; |
3a785c97 JJ |
7192 | location_t cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
7193 | unsigned int idx = 0; | |
bbbbb16a | 7194 | |
c166b898 | 7195 | ret = make_tree_vector (); |
bbbbb16a ILT |
7196 | if (p_orig_types == NULL) |
7197 | orig_types = NULL; | |
7198 | else | |
c166b898 | 7199 | orig_types = make_tree_vector (); |
bbbbb16a | 7200 | |
1a4049e7 JJ |
7201 | if (sizeof_arg != NULL |
7202 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 7203 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
27bf414c | 7204 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 7205 | if (convert_p) |
ebfbbdc5 | 7206 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
7207 | if (fold_p) |
7208 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
7209 | ret->quick_push (expr.value); |
7210 | if (orig_types) | |
7211 | orig_types->quick_push (expr.original_type); | |
3a785c97 JJ |
7212 | if (sizeof_arg != NULL |
7213 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
7214 | && expr.original_code == SIZEOF_EXPR) | |
7215 | { | |
7216 | sizeof_arg[0] = c_last_sizeof_arg; | |
7217 | sizeof_arg_loc[0] = cur_sizeof_arg_loc; | |
7218 | } | |
27bf414c JM |
7219 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7220 | { | |
7221 | c_parser_consume_token (parser); | |
c2255bc4 | 7222 | loc = c_parser_peek_token (parser)->location; |
1a4049e7 JJ |
7223 | if (sizeof_arg != NULL |
7224 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 7225 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
1a4049e7 | 7226 | else |
3a785c97 | 7227 | cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
27bf414c | 7228 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 7229 | if (convert_p) |
ebfbbdc5 | 7230 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
7231 | if (fold_p) |
7232 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
7233 | vec_safe_push (ret, expr.value); |
7234 | if (orig_types) | |
7235 | vec_safe_push (orig_types, expr.original_type); | |
3a785c97 JJ |
7236 | if (++idx < 3 |
7237 | && sizeof_arg != NULL | |
7238 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
1a4049e7 JJ |
7239 | && expr.original_code == SIZEOF_EXPR) |
7240 | { | |
3a785c97 JJ |
7241 | sizeof_arg[idx] = c_last_sizeof_arg; |
7242 | sizeof_arg_loc[idx] = cur_sizeof_arg_loc; | |
1a4049e7 JJ |
7243 | } |
7244 | } | |
9771b263 | 7245 | if (orig_types) |
bbbbb16a | 7246 | *p_orig_types = orig_types; |
27bf414c JM |
7247 | return ret; |
7248 | } | |
27bf414c JM |
7249 | \f |
7250 | /* Parse Objective-C-specific constructs. */ | |
7251 | ||
7252 | /* Parse an objc-class-definition. | |
7253 | ||
7254 | objc-class-definition: | |
7255 | @interface identifier objc-superclass[opt] objc-protocol-refs[opt] | |
7256 | objc-class-instance-variables[opt] objc-methodprotolist @end | |
7257 | @implementation identifier objc-superclass[opt] | |
7258 | objc-class-instance-variables[opt] | |
7259 | @interface identifier ( identifier ) objc-protocol-refs[opt] | |
7260 | objc-methodprotolist @end | |
ec3e9f82 NP |
7261 | @interface identifier ( ) objc-protocol-refs[opt] |
7262 | objc-methodprotolist @end | |
27bf414c JM |
7263 | @implementation identifier ( identifier ) |
7264 | ||
7265 | objc-superclass: | |
7266 | : identifier | |
7267 | ||
7268 | "@interface identifier (" must start "@interface identifier ( | |
7269 | identifier ) ...": objc-methodprotolist in the first production may | |
0fa2e4df | 7270 | not start with a parenthesized identifier as a declarator of a data |
27bf414c JM |
7271 | definition with no declaration specifiers if the objc-superclass, |
7272 | objc-protocol-refs and objc-class-instance-variables are omitted. */ | |
7273 | ||
7274 | static void | |
c165dca7 | 7275 | c_parser_objc_class_definition (c_parser *parser, tree attributes) |
27bf414c JM |
7276 | { |
7277 | bool iface_p; | |
7278 | tree id1; | |
7279 | tree superclass; | |
7280 | if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE)) | |
7281 | iface_p = true; | |
7282 | else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION)) | |
7283 | iface_p = false; | |
7284 | else | |
7285 | gcc_unreachable (); | |
c165dca7 | 7286 | |
27bf414c JM |
7287 | c_parser_consume_token (parser); |
7288 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7289 | { | |
7290 | c_parser_error (parser, "expected identifier"); | |
7291 | return; | |
7292 | } | |
7293 | id1 = c_parser_peek_token (parser)->value; | |
7294 | c_parser_consume_token (parser); | |
7295 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
7296 | { | |
ec3e9f82 | 7297 | /* We have a category or class extension. */ |
27bf414c JM |
7298 | tree id2; |
7299 | tree proto = NULL_TREE; | |
7300 | c_parser_consume_token (parser); | |
7301 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7302 | { | |
ec3e9f82 NP |
7303 | if (iface_p && c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
7304 | { | |
7305 | /* We have a class extension. */ | |
7306 | id2 = NULL_TREE; | |
7307 | } | |
7308 | else | |
7309 | { | |
7310 | c_parser_error (parser, "expected identifier or %<)%>"); | |
7311 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7312 | return; | |
7313 | } | |
7314 | } | |
7315 | else | |
7316 | { | |
7317 | id2 = c_parser_peek_token (parser)->value; | |
7318 | c_parser_consume_token (parser); | |
27bf414c | 7319 | } |
27bf414c JM |
7320 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
7321 | if (!iface_p) | |
7322 | { | |
7323 | objc_start_category_implementation (id1, id2); | |
7324 | return; | |
7325 | } | |
7326 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7327 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 7328 | objc_start_category_interface (id1, id2, proto, attributes); |
27bf414c JM |
7329 | c_parser_objc_methodprotolist (parser); |
7330 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
7331 | objc_finish_interface (); | |
7332 | return; | |
7333 | } | |
7334 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
7335 | { | |
7336 | c_parser_consume_token (parser); | |
7337 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7338 | { | |
7339 | c_parser_error (parser, "expected identifier"); | |
7340 | return; | |
7341 | } | |
7342 | superclass = c_parser_peek_token (parser)->value; | |
7343 | c_parser_consume_token (parser); | |
7344 | } | |
7345 | else | |
7346 | superclass = NULL_TREE; | |
7347 | if (iface_p) | |
7348 | { | |
7349 | tree proto = NULL_TREE; | |
7350 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7351 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 7352 | objc_start_class_interface (id1, superclass, proto, attributes); |
27bf414c JM |
7353 | } |
7354 | else | |
7355 | objc_start_class_implementation (id1, superclass); | |
7356 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
7357 | c_parser_objc_class_instance_variables (parser); | |
7358 | if (iface_p) | |
7359 | { | |
7360 | objc_continue_interface (); | |
7361 | c_parser_objc_methodprotolist (parser); | |
7362 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
7363 | objc_finish_interface (); | |
7364 | } | |
7365 | else | |
7366 | { | |
7367 | objc_continue_implementation (); | |
7368 | return; | |
7369 | } | |
7370 | } | |
7371 | ||
7372 | /* Parse objc-class-instance-variables. | |
7373 | ||
7374 | objc-class-instance-variables: | |
7375 | { objc-instance-variable-decl-list[opt] } | |
7376 | ||
7377 | objc-instance-variable-decl-list: | |
7378 | objc-visibility-spec | |
7379 | objc-instance-variable-decl ; | |
7380 | ; | |
7381 | objc-instance-variable-decl-list objc-visibility-spec | |
7382 | objc-instance-variable-decl-list objc-instance-variable-decl ; | |
7383 | objc-instance-variable-decl-list ; | |
7384 | ||
7385 | objc-visibility-spec: | |
7386 | @private | |
7387 | @protected | |
7388 | @public | |
7389 | ||
7390 | objc-instance-variable-decl: | |
7391 | struct-declaration | |
7392 | */ | |
7393 | ||
7394 | static void | |
7395 | c_parser_objc_class_instance_variables (c_parser *parser) | |
7396 | { | |
7397 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); | |
7398 | c_parser_consume_token (parser); | |
7399 | while (c_parser_next_token_is_not (parser, CPP_EOF)) | |
7400 | { | |
7401 | tree decls; | |
7402 | /* Parse any stray semicolon. */ | |
7403 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
7404 | { | |
c1771a20 | 7405 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
4e26ba90 | 7406 | "extra semicolon"); |
27bf414c JM |
7407 | c_parser_consume_token (parser); |
7408 | continue; | |
7409 | } | |
7410 | /* Stop if at the end of the instance variables. */ | |
7411 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
7412 | { | |
7413 | c_parser_consume_token (parser); | |
7414 | break; | |
7415 | } | |
7416 | /* Parse any objc-visibility-spec. */ | |
49b91f05 | 7417 | if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE)) |
27bf414c JM |
7418 | { |
7419 | c_parser_consume_token (parser); | |
c37d8c30 | 7420 | objc_set_visibility (OBJC_IVAR_VIS_PRIVATE); |
27bf414c JM |
7421 | continue; |
7422 | } | |
49b91f05 | 7423 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED)) |
27bf414c JM |
7424 | { |
7425 | c_parser_consume_token (parser); | |
c37d8c30 | 7426 | objc_set_visibility (OBJC_IVAR_VIS_PROTECTED); |
27bf414c JM |
7427 | continue; |
7428 | } | |
49b91f05 | 7429 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC)) |
27bf414c JM |
7430 | { |
7431 | c_parser_consume_token (parser); | |
c37d8c30 IS |
7432 | objc_set_visibility (OBJC_IVAR_VIS_PUBLIC); |
7433 | continue; | |
7434 | } | |
7435 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE)) | |
7436 | { | |
7437 | c_parser_consume_token (parser); | |
7438 | objc_set_visibility (OBJC_IVAR_VIS_PACKAGE); | |
27bf414c JM |
7439 | continue; |
7440 | } | |
bc4071dd RH |
7441 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
7442 | { | |
7443 | c_parser_pragma (parser, pragma_external); | |
7444 | continue; | |
7445 | } | |
7446 | ||
27bf414c JM |
7447 | /* Parse some comma-separated declarations. */ |
7448 | decls = c_parser_struct_declaration (parser); | |
4e26ba90 NP |
7449 | if (decls == NULL) |
7450 | { | |
7451 | /* There is a syntax error. We want to skip the offending | |
7452 | tokens up to the next ';' (included) or '}' | |
7453 | (excluded). */ | |
7454 | ||
7455 | /* First, skip manually a ')' or ']'. This is because they | |
7456 | reduce the nesting level, so c_parser_skip_until_found() | |
7457 | wouldn't be able to skip past them. */ | |
7458 | c_token *token = c_parser_peek_token (parser); | |
7459 | if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE) | |
7460 | c_parser_consume_token (parser); | |
7461 | ||
7462 | /* Then, do the standard skipping. */ | |
7463 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7464 | ||
7465 | /* We hopefully recovered. Start normal parsing again. */ | |
7466 | parser->error = false; | |
7467 | continue; | |
7468 | } | |
7469 | else | |
7470 | { | |
7471 | /* Comma-separated instance variables are chained together | |
7472 | in reverse order; add them one by one. */ | |
7473 | tree ivar = nreverse (decls); | |
7474 | for (; ivar; ivar = DECL_CHAIN (ivar)) | |
7475 | objc_add_instance_variable (copy_node (ivar)); | |
7476 | } | |
27bf414c JM |
7477 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
7478 | } | |
7479 | } | |
7480 | ||
7481 | /* Parse an objc-class-declaration. | |
7482 | ||
7483 | objc-class-declaration: | |
7484 | @class identifier-list ; | |
7485 | */ | |
7486 | ||
7487 | static void | |
7488 | c_parser_objc_class_declaration (c_parser *parser) | |
7489 | { | |
49b91f05 | 7490 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS)); |
27bf414c JM |
7491 | c_parser_consume_token (parser); |
7492 | /* Any identifiers, including those declared as type names, are OK | |
7493 | here. */ | |
7494 | while (true) | |
7495 | { | |
7496 | tree id; | |
7497 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7498 | { | |
7499 | c_parser_error (parser, "expected identifier"); | |
da57d1b9 NP |
7500 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); |
7501 | parser->error = false; | |
7502 | return; | |
27bf414c JM |
7503 | } |
7504 | id = c_parser_peek_token (parser)->value; | |
32dabdaf | 7505 | objc_declare_class (id); |
27bf414c JM |
7506 | c_parser_consume_token (parser); |
7507 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7508 | c_parser_consume_token (parser); | |
7509 | else | |
7510 | break; | |
7511 | } | |
7512 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
7513 | } |
7514 | ||
7515 | /* Parse an objc-alias-declaration. | |
7516 | ||
7517 | objc-alias-declaration: | |
7518 | @compatibility_alias identifier identifier ; | |
7519 | */ | |
7520 | ||
7521 | static void | |
7522 | c_parser_objc_alias_declaration (c_parser *parser) | |
7523 | { | |
7524 | tree id1, id2; | |
7525 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS)); | |
7526 | c_parser_consume_token (parser); | |
7527 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7528 | { | |
7529 | c_parser_error (parser, "expected identifier"); | |
7530 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7531 | return; | |
7532 | } | |
7533 | id1 = c_parser_peek_token (parser)->value; | |
7534 | c_parser_consume_token (parser); | |
7535 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7536 | { | |
7537 | c_parser_error (parser, "expected identifier"); | |
7538 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7539 | return; | |
7540 | } | |
7541 | id2 = c_parser_peek_token (parser)->value; | |
7542 | c_parser_consume_token (parser); | |
7543 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
7544 | objc_declare_alias (id1, id2); | |
7545 | } | |
7546 | ||
7547 | /* Parse an objc-protocol-definition. | |
7548 | ||
7549 | objc-protocol-definition: | |
7550 | @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end | |
7551 | @protocol identifier-list ; | |
7552 | ||
7553 | "@protocol identifier ;" should be resolved as "@protocol | |
7554 | identifier-list ;": objc-methodprotolist may not start with a | |
7555 | semicolon in the first alternative if objc-protocol-refs are | |
7556 | omitted. */ | |
7557 | ||
7558 | static void | |
c165dca7 | 7559 | c_parser_objc_protocol_definition (c_parser *parser, tree attributes) |
27bf414c JM |
7560 | { |
7561 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL)); | |
c165dca7 | 7562 | |
27bf414c JM |
7563 | c_parser_consume_token (parser); |
7564 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7565 | { | |
7566 | c_parser_error (parser, "expected identifier"); | |
7567 | return; | |
7568 | } | |
7569 | if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
7570 | || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON) | |
7571 | { | |
27bf414c JM |
7572 | /* Any identifiers, including those declared as type names, are |
7573 | OK here. */ | |
7574 | while (true) | |
7575 | { | |
7576 | tree id; | |
7577 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7578 | { | |
7579 | c_parser_error (parser, "expected identifier"); | |
7580 | break; | |
7581 | } | |
7582 | id = c_parser_peek_token (parser)->value; | |
c59633d9 | 7583 | objc_declare_protocol (id, attributes); |
27bf414c JM |
7584 | c_parser_consume_token (parser); |
7585 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7586 | c_parser_consume_token (parser); | |
7587 | else | |
7588 | break; | |
7589 | } | |
7590 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
7591 | } |
7592 | else | |
7593 | { | |
7594 | tree id = c_parser_peek_token (parser)->value; | |
7595 | tree proto = NULL_TREE; | |
7596 | c_parser_consume_token (parser); | |
7597 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7598 | proto = c_parser_objc_protocol_refs (parser); | |
0bacb8c7 | 7599 | parser->objc_pq_context = true; |
c165dca7 | 7600 | objc_start_protocol (id, proto, attributes); |
27bf414c JM |
7601 | c_parser_objc_methodprotolist (parser); |
7602 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
0bacb8c7 | 7603 | parser->objc_pq_context = false; |
27bf414c JM |
7604 | objc_finish_interface (); |
7605 | } | |
7606 | } | |
7607 | ||
7608 | /* Parse an objc-method-type. | |
7609 | ||
7610 | objc-method-type: | |
7611 | + | |
7612 | - | |
27bf414c | 7613 | |
249a82c4 NP |
7614 | Return true if it is a class method (+) and false if it is |
7615 | an instance method (-). | |
7616 | */ | |
7617 | static inline bool | |
27bf414c JM |
7618 | c_parser_objc_method_type (c_parser *parser) |
7619 | { | |
7620 | switch (c_parser_peek_token (parser)->type) | |
7621 | { | |
7622 | case CPP_PLUS: | |
7623 | c_parser_consume_token (parser); | |
249a82c4 | 7624 | return true; |
27bf414c JM |
7625 | case CPP_MINUS: |
7626 | c_parser_consume_token (parser); | |
249a82c4 | 7627 | return false; |
27bf414c JM |
7628 | default: |
7629 | gcc_unreachable (); | |
7630 | } | |
7631 | } | |
7632 | ||
7633 | /* Parse an objc-method-definition. | |
7634 | ||
7635 | objc-method-definition: | |
7636 | objc-method-type objc-method-decl ;[opt] compound-statement | |
7637 | */ | |
7638 | ||
7639 | static void | |
7640 | c_parser_objc_method_definition (c_parser *parser) | |
7641 | { | |
249a82c4 | 7642 | bool is_class_method = c_parser_objc_method_type (parser); |
a04a722b | 7643 | tree decl, attributes = NULL_TREE, expr = NULL_TREE; |
0bacb8c7 | 7644 | parser->objc_pq_context = true; |
a04a722b JM |
7645 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
7646 | &expr); | |
f7e71da5 IS |
7647 | if (decl == error_mark_node) |
7648 | return; /* Bail here. */ | |
7649 | ||
27bf414c JM |
7650 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
7651 | { | |
7652 | c_parser_consume_token (parser); | |
c1771a20 | 7653 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 7654 | "extra semicolon in method definition specified"); |
27bf414c | 7655 | } |
f7e71da5 | 7656 | |
8f078c08 AP |
7657 | if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
7658 | { | |
7659 | c_parser_error (parser, "expected %<{%>"); | |
7660 | return; | |
7661 | } | |
f7e71da5 | 7662 | |
0bacb8c7 | 7663 | parser->objc_pq_context = false; |
a04a722b | 7664 | if (objc_start_method_definition (is_class_method, decl, attributes, expr)) |
45547c7f NP |
7665 | { |
7666 | add_stmt (c_parser_compound_statement (parser)); | |
7667 | objc_finish_method_definition (current_function_decl); | |
7668 | } | |
7669 | else | |
7670 | { | |
7671 | /* This code is executed when we find a method definition | |
a26d8862 NP |
7672 | outside of an @implementation context (or invalid for other |
7673 | reasons). Parse the method (to keep going) but do not emit | |
7674 | any code. | |
45547c7f NP |
7675 | */ |
7676 | c_parser_compound_statement (parser); | |
7677 | } | |
27bf414c JM |
7678 | } |
7679 | ||
7680 | /* Parse an objc-methodprotolist. | |
7681 | ||
7682 | objc-methodprotolist: | |
7683 | empty | |
7684 | objc-methodprotolist objc-methodproto | |
7685 | objc-methodprotolist declaration | |
7686 | objc-methodprotolist ; | |
92902b1b IS |
7687 | @optional |
7688 | @required | |
27bf414c JM |
7689 | |
7690 | The declaration is a data definition, which may be missing | |
7691 | declaration specifiers under the same rules and diagnostics as | |
7692 | other data definitions outside functions, and the stray semicolon | |
7693 | is diagnosed the same way as a stray semicolon outside a | |
7694 | function. */ | |
7695 | ||
7696 | static void | |
7697 | c_parser_objc_methodprotolist (c_parser *parser) | |
7698 | { | |
7699 | while (true) | |
7700 | { | |
7701 | /* The list is terminated by @end. */ | |
7702 | switch (c_parser_peek_token (parser)->type) | |
7703 | { | |
7704 | case CPP_SEMICOLON: | |
c1771a20 | 7705 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 7706 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
7707 | c_parser_consume_token (parser); |
7708 | break; | |
7709 | case CPP_PLUS: | |
7710 | case CPP_MINUS: | |
7711 | c_parser_objc_methodproto (parser); | |
7712 | break; | |
b9b58168 RH |
7713 | case CPP_PRAGMA: |
7714 | c_parser_pragma (parser, pragma_external); | |
7715 | break; | |
27bf414c JM |
7716 | case CPP_EOF: |
7717 | return; | |
7718 | default: | |
7719 | if (c_parser_next_token_is_keyword (parser, RID_AT_END)) | |
7720 | return; | |
668ea4b1 | 7721 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)) |
f614132b | 7722 | c_parser_objc_at_property_declaration (parser); |
92902b1b IS |
7723 | else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL)) |
7724 | { | |
7725 | objc_set_method_opt (true); | |
7726 | c_parser_consume_token (parser); | |
7727 | } | |
7728 | else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED)) | |
7729 | { | |
7730 | objc_set_method_opt (false); | |
7731 | c_parser_consume_token (parser); | |
7732 | } | |
7733 | else | |
7734 | c_parser_declaration_or_fndef (parser, false, false, true, | |
f05b9d93 | 7735 | false, true, NULL); |
27bf414c JM |
7736 | break; |
7737 | } | |
7738 | } | |
7739 | } | |
7740 | ||
7741 | /* Parse an objc-methodproto. | |
7742 | ||
7743 | objc-methodproto: | |
7744 | objc-method-type objc-method-decl ; | |
7745 | */ | |
7746 | ||
7747 | static void | |
7748 | c_parser_objc_methodproto (c_parser *parser) | |
7749 | { | |
249a82c4 | 7750 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 7751 | tree decl, attributes = NULL_TREE; |
249a82c4 | 7752 | |
27bf414c | 7753 | /* Remember protocol qualifiers in prototypes. */ |
0bacb8c7 | 7754 | parser->objc_pq_context = true; |
a04a722b JM |
7755 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
7756 | NULL); | |
f7e71da5 | 7757 | /* Forget protocol qualifiers now. */ |
0bacb8c7 | 7758 | parser->objc_pq_context = false; |
f7e71da5 IS |
7759 | |
7760 | /* Do not allow the presence of attributes to hide an erroneous | |
7761 | method implementation in the interface section. */ | |
7762 | if (!c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
7763 | { | |
7764 | c_parser_error (parser, "expected %<;%>"); | |
7765 | return; | |
7766 | } | |
7767 | ||
7768 | if (decl != error_mark_node) | |
249a82c4 | 7769 | objc_add_method_declaration (is_class_method, decl, attributes); |
f7e71da5 | 7770 | |
27bf414c JM |
7771 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
7772 | } | |
7773 | ||
f7e71da5 IS |
7774 | /* If we are at a position that method attributes may be present, check that |
7775 | there are not any parsed already (a syntax error) and then collect any | |
7776 | specified at the current location. Finally, if new attributes were present, | |
7777 | check that the next token is legal ( ';' for decls and '{' for defs). */ | |
7778 | ||
7779 | static bool | |
7780 | c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes) | |
7781 | { | |
7782 | bool bad = false; | |
7783 | if (*attributes) | |
7784 | { | |
7785 | c_parser_error (parser, | |
7786 | "method attributes must be specified at the end only"); | |
7787 | *attributes = NULL_TREE; | |
7788 | bad = true; | |
7789 | } | |
7790 | ||
7791 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7792 | *attributes = c_parser_attributes (parser); | |
7793 | ||
7794 | /* If there were no attributes here, just report any earlier error. */ | |
7795 | if (*attributes == NULL_TREE || bad) | |
7796 | return bad; | |
7797 | ||
7798 | /* If the attributes are followed by a ; or {, then just report any earlier | |
7799 | error. */ | |
7800 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
7801 | || c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
7802 | return bad; | |
7803 | ||
7804 | /* We've got attributes, but not at the end. */ | |
7805 | c_parser_error (parser, | |
7806 | "expected %<;%> or %<{%> after method attribute definition"); | |
7807 | return true; | |
7808 | } | |
7809 | ||
27bf414c JM |
7810 | /* Parse an objc-method-decl. |
7811 | ||
7812 | objc-method-decl: | |
7813 | ( objc-type-name ) objc-selector | |
7814 | objc-selector | |
7815 | ( objc-type-name ) objc-keyword-selector objc-optparmlist | |
7816 | objc-keyword-selector objc-optparmlist | |
f7e71da5 | 7817 | attributes |
27bf414c JM |
7818 | |
7819 | objc-keyword-selector: | |
7820 | objc-keyword-decl | |
7821 | objc-keyword-selector objc-keyword-decl | |
7822 | ||
7823 | objc-keyword-decl: | |
7824 | objc-selector : ( objc-type-name ) identifier | |
7825 | objc-selector : identifier | |
7826 | : ( objc-type-name ) identifier | |
7827 | : identifier | |
7828 | ||
7829 | objc-optparmlist: | |
7830 | objc-optparms objc-optellipsis | |
7831 | ||
7832 | objc-optparms: | |
7833 | empty | |
7834 | objc-opt-parms , parameter-declaration | |
7835 | ||
7836 | objc-optellipsis: | |
7837 | empty | |
7838 | , ... | |
7839 | */ | |
7840 | ||
7841 | static tree | |
a04a722b JM |
7842 | c_parser_objc_method_decl (c_parser *parser, bool is_class_method, |
7843 | tree *attributes, tree *expr) | |
27bf414c JM |
7844 | { |
7845 | tree type = NULL_TREE; | |
7846 | tree sel; | |
7847 | tree parms = NULL_TREE; | |
dbb74365 | 7848 | bool ellipsis = false; |
f7e71da5 | 7849 | bool attr_err = false; |
dbb74365 | 7850 | |
f7e71da5 | 7851 | *attributes = NULL_TREE; |
27bf414c JM |
7852 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
7853 | { | |
7854 | c_parser_consume_token (parser); | |
7855 | type = c_parser_objc_type_name (parser); | |
7856 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7857 | } | |
7858 | sel = c_parser_objc_selector (parser); | |
7859 | /* If there is no selector, or a colon follows, we have an | |
7860 | objc-keyword-selector. If there is a selector, and a colon does | |
7861 | not follow, that selector ends the objc-method-decl. */ | |
7862 | if (!sel || c_parser_next_token_is (parser, CPP_COLON)) | |
7863 | { | |
7864 | tree tsel = sel; | |
7865 | tree list = NULL_TREE; | |
27bf414c JM |
7866 | while (true) |
7867 | { | |
7868 | tree atype = NULL_TREE, id, keyworddecl; | |
f7e71da5 | 7869 | tree param_attr = NULL_TREE; |
27bf414c JM |
7870 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
7871 | break; | |
7872 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
7873 | { | |
7874 | c_parser_consume_token (parser); | |
7875 | atype = c_parser_objc_type_name (parser); | |
7876 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7877 | "expected %<)%>"); | |
7878 | } | |
f7e71da5 IS |
7879 | /* New ObjC allows attributes on method parameters. */ |
7880 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7881 | param_attr = c_parser_attributes (parser); | |
27bf414c JM |
7882 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
7883 | { | |
7884 | c_parser_error (parser, "expected identifier"); | |
7885 | return error_mark_node; | |
7886 | } | |
7887 | id = c_parser_peek_token (parser)->value; | |
7888 | c_parser_consume_token (parser); | |
f7e71da5 | 7889 | keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr); |
27bf414c JM |
7890 | list = chainon (list, keyworddecl); |
7891 | tsel = c_parser_objc_selector (parser); | |
7892 | if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7893 | break; | |
7894 | } | |
f7e71da5 IS |
7895 | |
7896 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7897 | ||
27bf414c JM |
7898 | /* Parse the optional parameter list. Optional Objective-C |
7899 | method parameters follow the C syntax, and may include '...' | |
7900 | to denote a variable number of arguments. */ | |
7901 | parms = make_node (TREE_LIST); | |
27bf414c JM |
7902 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7903 | { | |
7904 | struct c_parm *parm; | |
7905 | c_parser_consume_token (parser); | |
7906 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
7907 | { | |
7908 | ellipsis = true; | |
7909 | c_parser_consume_token (parser); | |
f7e71da5 IS |
7910 | attr_err |= c_parser_objc_maybe_method_attributes |
7911 | (parser, attributes) ; | |
27bf414c JM |
7912 | break; |
7913 | } | |
7914 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
7915 | if (parm == NULL) | |
7916 | break; | |
7917 | parms = chainon (parms, | |
a04a722b | 7918 | build_tree_list (NULL_TREE, grokparm (parm, expr))); |
27bf414c | 7919 | } |
27bf414c JM |
7920 | sel = list; |
7921 | } | |
f7e71da5 IS |
7922 | else |
7923 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7924 | ||
7925 | if (sel == NULL) | |
7926 | { | |
7927 | c_parser_error (parser, "objective-c method declaration is expected"); | |
7928 | return error_mark_node; | |
7929 | } | |
7930 | ||
7931 | if (attr_err) | |
7932 | return error_mark_node; | |
7933 | ||
249a82c4 | 7934 | return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis); |
27bf414c JM |
7935 | } |
7936 | ||
7937 | /* Parse an objc-type-name. | |
7938 | ||
7939 | objc-type-name: | |
7940 | objc-type-qualifiers[opt] type-name | |
7941 | objc-type-qualifiers[opt] | |
7942 | ||
7943 | objc-type-qualifiers: | |
7944 | objc-type-qualifier | |
7945 | objc-type-qualifiers objc-type-qualifier | |
7946 | ||
7947 | objc-type-qualifier: one of | |
7948 | in out inout bycopy byref oneway | |
7949 | */ | |
7950 | ||
7951 | static tree | |
7952 | c_parser_objc_type_name (c_parser *parser) | |
7953 | { | |
7954 | tree quals = NULL_TREE; | |
d75d71e0 | 7955 | struct c_type_name *type_name = NULL; |
27bf414c JM |
7956 | tree type = NULL_TREE; |
7957 | while (true) | |
7958 | { | |
7959 | c_token *token = c_parser_peek_token (parser); | |
7960 | if (token->type == CPP_KEYWORD | |
7961 | && (token->keyword == RID_IN | |
7962 | || token->keyword == RID_OUT | |
7963 | || token->keyword == RID_INOUT | |
7964 | || token->keyword == RID_BYCOPY | |
7965 | || token->keyword == RID_BYREF | |
7966 | || token->keyword == RID_ONEWAY)) | |
7967 | { | |
71fc71d8 | 7968 | quals = chainon (build_tree_list (NULL_TREE, token->value), quals); |
27bf414c JM |
7969 | c_parser_consume_token (parser); |
7970 | } | |
7971 | else | |
7972 | break; | |
7973 | } | |
29ce73cb | 7974 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
d75d71e0 ILT |
7975 | type_name = c_parser_type_name (parser); |
7976 | if (type_name) | |
928c19bb | 7977 | type = groktypename (type_name, NULL, NULL); |
046608a3 NP |
7978 | |
7979 | /* If the type is unknown, and error has already been produced and | |
7980 | we need to recover from the error. In that case, use NULL_TREE | |
7981 | for the type, as if no type had been specified; this will use the | |
7982 | default type ('id') which is good for error recovery. */ | |
7983 | if (type == error_mark_node) | |
7984 | type = NULL_TREE; | |
7985 | ||
27bf414c JM |
7986 | return build_tree_list (quals, type); |
7987 | } | |
7988 | ||
7989 | /* Parse objc-protocol-refs. | |
7990 | ||
7991 | objc-protocol-refs: | |
7992 | < identifier-list > | |
7993 | */ | |
7994 | ||
7995 | static tree | |
7996 | c_parser_objc_protocol_refs (c_parser *parser) | |
7997 | { | |
7998 | tree list = NULL_TREE; | |
7999 | gcc_assert (c_parser_next_token_is (parser, CPP_LESS)); | |
8000 | c_parser_consume_token (parser); | |
8001 | /* Any identifiers, including those declared as type names, are OK | |
8002 | here. */ | |
8003 | while (true) | |
8004 | { | |
8005 | tree id; | |
8006 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8007 | { | |
8008 | c_parser_error (parser, "expected identifier"); | |
8009 | break; | |
8010 | } | |
8011 | id = c_parser_peek_token (parser)->value; | |
8012 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
8013 | c_parser_consume_token (parser); | |
8014 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8015 | c_parser_consume_token (parser); | |
8016 | else | |
8017 | break; | |
8018 | } | |
8019 | c_parser_require (parser, CPP_GREATER, "expected %<>%>"); | |
8020 | return list; | |
8021 | } | |
8022 | ||
437c2322 | 8023 | /* Parse an objc-try-catch-finally-statement. |
27bf414c | 8024 | |
437c2322 | 8025 | objc-try-catch-finally-statement: |
27bf414c JM |
8026 | @try compound-statement objc-catch-list[opt] |
8027 | @try compound-statement objc-catch-list[opt] @finally compound-statement | |
8028 | ||
8029 | objc-catch-list: | |
437c2322 NP |
8030 | @catch ( objc-catch-parameter-declaration ) compound-statement |
8031 | objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement | |
8032 | ||
8033 | objc-catch-parameter-declaration: | |
8034 | parameter-declaration | |
8035 | '...' | |
8036 | ||
8037 | where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS. | |
8038 | ||
8039 | PS: This function is identical to cp_parser_objc_try_catch_finally_statement | |
8040 | for C++. Keep them in sync. */ | |
27bf414c JM |
8041 | |
8042 | static void | |
437c2322 | 8043 | c_parser_objc_try_catch_finally_statement (c_parser *parser) |
27bf414c | 8044 | { |
437c2322 | 8045 | location_t location; |
27bf414c | 8046 | tree stmt; |
437c2322 | 8047 | |
49b91f05 | 8048 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY)); |
27bf414c | 8049 | c_parser_consume_token (parser); |
437c2322 | 8050 | location = c_parser_peek_token (parser)->location; |
46270f14 | 8051 | objc_maybe_warn_exceptions (location); |
27bf414c | 8052 | stmt = c_parser_compound_statement (parser); |
437c2322 NP |
8053 | objc_begin_try_stmt (location, stmt); |
8054 | ||
49b91f05 | 8055 | while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH)) |
27bf414c JM |
8056 | { |
8057 | struct c_parm *parm; | |
437c2322 NP |
8058 | tree parameter_declaration = error_mark_node; |
8059 | bool seen_open_paren = false; | |
8060 | ||
27bf414c JM |
8061 | c_parser_consume_token (parser); |
8062 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
437c2322 NP |
8063 | seen_open_paren = true; |
8064 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
27bf414c | 8065 | { |
437c2322 NP |
8066 | /* We have "@catch (...)" (where the '...' are literally |
8067 | what is in the code). Skip the '...'. | |
8068 | parameter_declaration is set to NULL_TREE, and | |
8069 | objc_being_catch_clauses() knows that that means | |
8070 | '...'. */ | |
8071 | c_parser_consume_token (parser); | |
8072 | parameter_declaration = NULL_TREE; | |
27bf414c | 8073 | } |
437c2322 NP |
8074 | else |
8075 | { | |
8076 | /* We have "@catch (NSException *exception)" or something | |
8077 | like that. Parse the parameter declaration. */ | |
8078 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
8079 | if (parm == NULL) | |
8080 | parameter_declaration = error_mark_node; | |
8081 | else | |
a04a722b | 8082 | parameter_declaration = grokparm (parm, NULL); |
437c2322 NP |
8083 | } |
8084 | if (seen_open_paren) | |
8085 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8086 | else | |
8087 | { | |
8088 | /* If there was no open parenthesis, we are recovering from | |
8089 | an error, and we are trying to figure out what mistake | |
8090 | the user has made. */ | |
8091 | ||
8092 | /* If there is an immediate closing parenthesis, the user | |
8093 | probably forgot the opening one (ie, they typed "@catch | |
8094 | NSException *e)". Parse the closing parenthesis and keep | |
8095 | going. */ | |
8096 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
8097 | c_parser_consume_token (parser); | |
8098 | ||
8099 | /* If these is no immediate closing parenthesis, the user | |
8100 | probably doesn't know that parenthesis are required at | |
8101 | all (ie, they typed "@catch NSException *e"). So, just | |
8102 | forget about the closing parenthesis and keep going. */ | |
8103 | } | |
8104 | objc_begin_catch_clause (parameter_declaration); | |
27bf414c JM |
8105 | if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
8106 | c_parser_compound_statement_nostart (parser); | |
8107 | objc_finish_catch_clause (); | |
8108 | } | |
8109 | if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY)) | |
8110 | { | |
27bf414c | 8111 | c_parser_consume_token (parser); |
437c2322 NP |
8112 | location = c_parser_peek_token (parser)->location; |
8113 | stmt = c_parser_compound_statement (parser); | |
8114 | objc_build_finally_clause (location, stmt); | |
27bf414c JM |
8115 | } |
8116 | objc_finish_try_stmt (); | |
8117 | } | |
8118 | ||
8119 | /* Parse an objc-synchronized-statement. | |
8120 | ||
8121 | objc-synchronized-statement: | |
8122 | @synchronized ( expression ) compound-statement | |
8123 | */ | |
8124 | ||
8125 | static void | |
8126 | c_parser_objc_synchronized_statement (c_parser *parser) | |
8127 | { | |
8128 | location_t loc; | |
8129 | tree expr, stmt; | |
8130 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED)); | |
8131 | c_parser_consume_token (parser); | |
8132 | loc = c_parser_peek_token (parser)->location; | |
46270f14 | 8133 | objc_maybe_warn_exceptions (loc); |
27bf414c JM |
8134 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8135 | { | |
8136 | expr = c_parser_expression (parser).value; | |
928c19bb | 8137 | expr = c_fully_fold (expr, false, NULL); |
27bf414c JM |
8138 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8139 | } | |
8140 | else | |
8141 | expr = error_mark_node; | |
8142 | stmt = c_parser_compound_statement (parser); | |
8143 | objc_build_synchronized (loc, expr, stmt); | |
8144 | } | |
8145 | ||
8146 | /* Parse an objc-selector; return NULL_TREE without an error if the | |
8147 | next token is not an objc-selector. | |
8148 | ||
8149 | objc-selector: | |
8150 | identifier | |
8151 | one of | |
8152 | enum struct union if else while do for switch case default | |
8153 | break continue return goto asm sizeof typeof __alignof | |
8154 | unsigned long const short volatile signed restrict _Complex | |
8155 | in out inout bycopy byref oneway int char float double void _Bool | |
8156 | ||
8157 | ??? Why this selection of keywords but not, for example, storage | |
8158 | class specifiers? */ | |
8159 | ||
8160 | static tree | |
8161 | c_parser_objc_selector (c_parser *parser) | |
8162 | { | |
8163 | c_token *token = c_parser_peek_token (parser); | |
8164 | tree value = token->value; | |
8165 | if (token->type == CPP_NAME) | |
8166 | { | |
8167 | c_parser_consume_token (parser); | |
8168 | return value; | |
8169 | } | |
8170 | if (token->type != CPP_KEYWORD) | |
8171 | return NULL_TREE; | |
8172 | switch (token->keyword) | |
8173 | { | |
8174 | case RID_ENUM: | |
8175 | case RID_STRUCT: | |
8176 | case RID_UNION: | |
8177 | case RID_IF: | |
8178 | case RID_ELSE: | |
8179 | case RID_WHILE: | |
8180 | case RID_DO: | |
8181 | case RID_FOR: | |
8182 | case RID_SWITCH: | |
8183 | case RID_CASE: | |
8184 | case RID_DEFAULT: | |
8185 | case RID_BREAK: | |
8186 | case RID_CONTINUE: | |
8187 | case RID_RETURN: | |
8188 | case RID_GOTO: | |
8189 | case RID_ASM: | |
8190 | case RID_SIZEOF: | |
8191 | case RID_TYPEOF: | |
8192 | case RID_ALIGNOF: | |
8193 | case RID_UNSIGNED: | |
8194 | case RID_LONG: | |
a6766312 | 8195 | case RID_INT128: |
27bf414c JM |
8196 | case RID_CONST: |
8197 | case RID_SHORT: | |
8198 | case RID_VOLATILE: | |
8199 | case RID_SIGNED: | |
8200 | case RID_RESTRICT: | |
8201 | case RID_COMPLEX: | |
8202 | case RID_IN: | |
8203 | case RID_OUT: | |
8204 | case RID_INOUT: | |
8205 | case RID_BYCOPY: | |
8206 | case RID_BYREF: | |
8207 | case RID_ONEWAY: | |
8208 | case RID_INT: | |
8209 | case RID_CHAR: | |
8210 | case RID_FLOAT: | |
8211 | case RID_DOUBLE: | |
8212 | case RID_VOID: | |
8213 | case RID_BOOL: | |
8214 | c_parser_consume_token (parser); | |
8215 | return value; | |
8216 | default: | |
8217 | return NULL_TREE; | |
8218 | } | |
8219 | } | |
8220 | ||
8221 | /* Parse an objc-selector-arg. | |
8222 | ||
8223 | objc-selector-arg: | |
8224 | objc-selector | |
8225 | objc-keywordname-list | |
8226 | ||
8227 | objc-keywordname-list: | |
8228 | objc-keywordname | |
8229 | objc-keywordname-list objc-keywordname | |
8230 | ||
8231 | objc-keywordname: | |
8232 | objc-selector : | |
8233 | : | |
8234 | */ | |
8235 | ||
8236 | static tree | |
8237 | c_parser_objc_selector_arg (c_parser *parser) | |
8238 | { | |
8239 | tree sel = c_parser_objc_selector (parser); | |
8240 | tree list = NULL_TREE; | |
8241 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8242 | return sel; | |
8243 | while (true) | |
8244 | { | |
8245 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
8246 | return list; | |
8247 | list = chainon (list, build_tree_list (sel, NULL_TREE)); | |
8248 | sel = c_parser_objc_selector (parser); | |
8249 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8250 | break; | |
8251 | } | |
8252 | return list; | |
8253 | } | |
8254 | ||
8255 | /* Parse an objc-receiver. | |
8256 | ||
8257 | objc-receiver: | |
8258 | expression | |
8259 | class-name | |
8260 | type-name | |
8261 | */ | |
8262 | ||
8263 | static tree | |
8264 | c_parser_objc_receiver (c_parser *parser) | |
8265 | { | |
8266 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
8267 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME | |
8268 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
8269 | { | |
8270 | tree id = c_parser_peek_token (parser)->value; | |
8271 | c_parser_consume_token (parser); | |
8272 | return objc_get_class_reference (id); | |
8273 | } | |
928c19bb | 8274 | return c_fully_fold (c_parser_expression (parser).value, false, NULL); |
27bf414c JM |
8275 | } |
8276 | ||
8277 | /* Parse objc-message-args. | |
8278 | ||
8279 | objc-message-args: | |
8280 | objc-selector | |
8281 | objc-keywordarg-list | |
8282 | ||
8283 | objc-keywordarg-list: | |
8284 | objc-keywordarg | |
8285 | objc-keywordarg-list objc-keywordarg | |
8286 | ||
8287 | objc-keywordarg: | |
8288 | objc-selector : objc-keywordexpr | |
8289 | : objc-keywordexpr | |
8290 | */ | |
8291 | ||
8292 | static tree | |
8293 | c_parser_objc_message_args (c_parser *parser) | |
8294 | { | |
8295 | tree sel = c_parser_objc_selector (parser); | |
8296 | tree list = NULL_TREE; | |
8297 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8298 | return sel; | |
8299 | while (true) | |
8300 | { | |
8301 | tree keywordexpr; | |
8302 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
0a7d7dea | 8303 | return error_mark_node; |
27bf414c JM |
8304 | keywordexpr = c_parser_objc_keywordexpr (parser); |
8305 | list = chainon (list, build_tree_list (sel, keywordexpr)); | |
8306 | sel = c_parser_objc_selector (parser); | |
8307 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8308 | break; | |
8309 | } | |
8310 | return list; | |
8311 | } | |
8312 | ||
8313 | /* Parse an objc-keywordexpr. | |
8314 | ||
8315 | objc-keywordexpr: | |
8316 | nonempty-expr-list | |
8317 | */ | |
8318 | ||
8319 | static tree | |
8320 | c_parser_objc_keywordexpr (c_parser *parser) | |
8321 | { | |
bbbbb16a | 8322 | tree ret; |
9771b263 | 8323 | vec<tree, va_gc> *expr_list = c_parser_expr_list (parser, true, true, |
3a785c97 | 8324 | NULL, NULL, NULL); |
9771b263 | 8325 | if (vec_safe_length (expr_list) == 1) |
27bf414c JM |
8326 | { |
8327 | /* Just return the expression, remove a level of | |
8328 | indirection. */ | |
9771b263 | 8329 | ret = (*expr_list)[0]; |
27bf414c JM |
8330 | } |
8331 | else | |
8332 | { | |
8333 | /* We have a comma expression, we will collapse later. */ | |
c166b898 | 8334 | ret = build_tree_list_vec (expr_list); |
27bf414c | 8335 | } |
c166b898 | 8336 | release_tree_vector (expr_list); |
bbbbb16a | 8337 | return ret; |
27bf414c JM |
8338 | } |
8339 | ||
c165dca7 IS |
8340 | /* A check, needed in several places, that ObjC interface, implementation or |
8341 | method definitions are not prefixed by incorrect items. */ | |
8342 | static bool | |
8343 | c_parser_objc_diagnose_bad_element_prefix (c_parser *parser, | |
8344 | struct c_declspecs *specs) | |
8345 | { | |
9e5b2115 PB |
8346 | if (!specs->declspecs_seen_p || specs->non_sc_seen_p |
8347 | || specs->typespec_kind != ctsk_none) | |
c165dca7 IS |
8348 | { |
8349 | c_parser_error (parser, | |
8350 | "no type or storage class may be specified here,"); | |
8351 | c_parser_skip_to_end_of_block_or_statement (parser); | |
8352 | return true; | |
8353 | } | |
8354 | return false; | |
8355 | } | |
668ea4b1 | 8356 | |
f614132b | 8357 | /* Parse an Objective-C @property declaration. The syntax is: |
668ea4b1 | 8358 | |
f614132b NP |
8359 | objc-property-declaration: |
8360 | '@property' objc-property-attributes[opt] struct-declaration ; | |
668ea4b1 | 8361 | |
f614132b NP |
8362 | objc-property-attributes: |
8363 | '(' objc-property-attribute-list ')' | |
8364 | ||
8365 | objc-property-attribute-list: | |
8366 | objc-property-attribute | |
8367 | objc-property-attribute-list, objc-property-attribute | |
8368 | ||
8369 | objc-property-attribute | |
8370 | 'getter' = identifier | |
8371 | 'setter' = identifier | |
8372 | 'readonly' | |
8373 | 'readwrite' | |
8374 | 'assign' | |
8375 | 'retain' | |
8376 | 'copy' | |
8377 | 'nonatomic' | |
8378 | ||
8379 | For example: | |
8380 | @property NSString *name; | |
8381 | @property (readonly) id object; | |
8382 | @property (retain, nonatomic, getter=getTheName) id name; | |
8383 | @property int a, b, c; | |
8384 | ||
8385 | PS: This function is identical to cp_parser_objc_at_propery_declaration | |
200290f2 | 8386 | for C++. Keep them in sync. */ |
668ea4b1 | 8387 | static void |
f614132b | 8388 | c_parser_objc_at_property_declaration (c_parser *parser) |
668ea4b1 | 8389 | { |
200290f2 NP |
8390 | /* The following variables hold the attributes of the properties as |
8391 | parsed. They are 'false' or 'NULL_TREE' if the attribute was not | |
8392 | seen. When we see an attribute, we set them to 'true' (if they | |
8393 | are boolean properties) or to the identifier (if they have an | |
8394 | argument, ie, for getter and setter). Note that here we only | |
8395 | parse the list of attributes, check the syntax and accumulate the | |
8396 | attributes that we find. objc_add_property_declaration() will | |
8397 | then process the information. */ | |
8398 | bool property_assign = false; | |
8399 | bool property_copy = false; | |
8400 | tree property_getter_ident = NULL_TREE; | |
8401 | bool property_nonatomic = false; | |
8402 | bool property_readonly = false; | |
8403 | bool property_readwrite = false; | |
8404 | bool property_retain = false; | |
8405 | tree property_setter_ident = NULL_TREE; | |
200290f2 NP |
8406 | |
8407 | /* 'properties' is the list of properties that we read. Usually a | |
8408 | single one, but maybe more (eg, in "@property int a, b, c;" there | |
8409 | are three). */ | |
f614132b NP |
8410 | tree properties; |
8411 | location_t loc; | |
200290f2 | 8412 | |
f614132b NP |
8413 | loc = c_parser_peek_token (parser)->location; |
8414 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)); | |
668ea4b1 | 8415 | |
f614132b | 8416 | c_parser_consume_token (parser); /* Eat '@property'. */ |
668ea4b1 | 8417 | |
f614132b NP |
8418 | /* Parse the optional attribute list... */ |
8419 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
668ea4b1 | 8420 | { |
f614132b NP |
8421 | /* Eat the '(' */ |
8422 | c_parser_consume_token (parser); | |
8423 | ||
8424 | /* Property attribute keywords are valid now. */ | |
8425 | parser->objc_property_attr_context = true; | |
8426 | ||
8427 | while (true) | |
668ea4b1 | 8428 | { |
f614132b NP |
8429 | bool syntax_error = false; |
8430 | c_token *token = c_parser_peek_token (parser); | |
8431 | enum rid keyword; | |
8432 | ||
8433 | if (token->type != CPP_KEYWORD) | |
8434 | { | |
8435 | if (token->type == CPP_CLOSE_PAREN) | |
8436 | c_parser_error (parser, "expected identifier"); | |
8437 | else | |
8438 | { | |
8439 | c_parser_consume_token (parser); | |
8440 | c_parser_error (parser, "unknown property attribute"); | |
8441 | } | |
8442 | break; | |
8443 | } | |
8444 | keyword = token->keyword; | |
200290f2 | 8445 | c_parser_consume_token (parser); |
f614132b NP |
8446 | switch (keyword) |
8447 | { | |
200290f2 | 8448 | case RID_ASSIGN: property_assign = true; break; |
200290f2 NP |
8449 | case RID_COPY: property_copy = true; break; |
8450 | case RID_NONATOMIC: property_nonatomic = true; break; | |
8451 | case RID_READONLY: property_readonly = true; break; | |
8452 | case RID_READWRITE: property_readwrite = true; break; | |
8453 | case RID_RETAIN: property_retain = true; break; | |
8454 | ||
f614132b NP |
8455 | case RID_GETTER: |
8456 | case RID_SETTER: | |
f614132b NP |
8457 | if (c_parser_next_token_is_not (parser, CPP_EQ)) |
8458 | { | |
d853ee42 NP |
8459 | if (keyword == RID_GETTER) |
8460 | c_parser_error (parser, | |
8461 | "missing %<=%> (after %<getter%> attribute)"); | |
8462 | else | |
8463 | c_parser_error (parser, | |
8464 | "missing %<=%> (after %<setter%> attribute)"); | |
f614132b NP |
8465 | syntax_error = true; |
8466 | break; | |
8467 | } | |
8468 | c_parser_consume_token (parser); /* eat the = */ | |
8469 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8470 | { | |
8471 | c_parser_error (parser, "expected identifier"); | |
8472 | syntax_error = true; | |
8473 | break; | |
8474 | } | |
f614132b NP |
8475 | if (keyword == RID_SETTER) |
8476 | { | |
200290f2 NP |
8477 | if (property_setter_ident != NULL_TREE) |
8478 | c_parser_error (parser, "the %<setter%> attribute may only be specified once"); | |
8479 | else | |
8480 | property_setter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 8481 | c_parser_consume_token (parser); |
200290f2 NP |
8482 | if (c_parser_next_token_is_not (parser, CPP_COLON)) |
8483 | c_parser_error (parser, "setter name must terminate with %<:%>"); | |
8484 | else | |
8485 | c_parser_consume_token (parser); | |
f614132b | 8486 | } |
46a88c12 | 8487 | else |
f614132b | 8488 | { |
200290f2 NP |
8489 | if (property_getter_ident != NULL_TREE) |
8490 | c_parser_error (parser, "the %<getter%> attribute may only be specified once"); | |
8491 | else | |
8492 | property_getter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 8493 | c_parser_consume_token (parser); |
f614132b | 8494 | } |
200290f2 NP |
8495 | break; |
8496 | default: | |
8497 | c_parser_error (parser, "unknown property attribute"); | |
f614132b NP |
8498 | syntax_error = true; |
8499 | break; | |
8500 | } | |
8501 | ||
8502 | if (syntax_error) | |
668ea4b1 | 8503 | break; |
f614132b NP |
8504 | |
8505 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
668ea4b1 | 8506 | c_parser_consume_token (parser); |
f614132b | 8507 | else |
668ea4b1 IS |
8508 | break; |
8509 | } | |
f614132b NP |
8510 | parser->objc_property_attr_context = false; |
8511 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8512 | } | |
8513 | /* ... and the property declaration(s). */ | |
8514 | properties = c_parser_struct_declaration (parser); | |
668ea4b1 | 8515 | |
f614132b NP |
8516 | if (properties == error_mark_node) |
8517 | { | |
8518 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8519 | parser->error = false; | |
8520 | return; | |
8521 | } | |
668ea4b1 | 8522 | |
f614132b NP |
8523 | if (properties == NULL_TREE) |
8524 | c_parser_error (parser, "expected identifier"); | |
8525 | else | |
8526 | { | |
8527 | /* Comma-separated properties are chained together in | |
8528 | reverse order; add them one by one. */ | |
8529 | properties = nreverse (properties); | |
8530 | ||
8531 | for (; properties; properties = TREE_CHAIN (properties)) | |
200290f2 NP |
8532 | objc_add_property_declaration (loc, copy_node (properties), |
8533 | property_readonly, property_readwrite, | |
8534 | property_assign, property_retain, | |
8535 | property_copy, property_nonatomic, | |
46a88c12 | 8536 | property_getter_ident, property_setter_ident); |
f614132b | 8537 | } |
668ea4b1 IS |
8538 | |
8539 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
f614132b | 8540 | parser->error = false; |
668ea4b1 IS |
8541 | } |
8542 | ||
da57d1b9 NP |
8543 | /* Parse an Objective-C @synthesize declaration. The syntax is: |
8544 | ||
8545 | objc-synthesize-declaration: | |
8546 | @synthesize objc-synthesize-identifier-list ; | |
8547 | ||
8548 | objc-synthesize-identifier-list: | |
8549 | objc-synthesize-identifier | |
8550 | objc-synthesize-identifier-list, objc-synthesize-identifier | |
8551 | ||
8552 | objc-synthesize-identifier | |
8553 | identifier | |
8554 | identifier = identifier | |
8555 | ||
8556 | For example: | |
8557 | @synthesize MyProperty; | |
8558 | @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty; | |
8559 | ||
8560 | PS: This function is identical to cp_parser_objc_at_synthesize_declaration | |
8561 | for C++. Keep them in sync. | |
8562 | */ | |
8563 | static void | |
8564 | c_parser_objc_at_synthesize_declaration (c_parser *parser) | |
8565 | { | |
8566 | tree list = NULL_TREE; | |
8567 | location_t loc; | |
8568 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE)); | |
8569 | loc = c_parser_peek_token (parser)->location; | |
8570 | ||
8571 | c_parser_consume_token (parser); | |
8572 | while (true) | |
8573 | { | |
8574 | tree property, ivar; | |
8575 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8576 | { | |
8577 | c_parser_error (parser, "expected identifier"); | |
8578 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8579 | /* Once we find the semicolon, we can resume normal parsing. | |
8580 | We have to reset parser->error manually because | |
8581 | c_parser_skip_until_found() won't reset it for us if the | |
8582 | next token is precisely a semicolon. */ | |
8583 | parser->error = false; | |
8584 | return; | |
8585 | } | |
8586 | property = c_parser_peek_token (parser)->value; | |
8587 | c_parser_consume_token (parser); | |
8588 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
8589 | { | |
8590 | c_parser_consume_token (parser); | |
8591 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8592 | { | |
8593 | c_parser_error (parser, "expected identifier"); | |
8594 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8595 | parser->error = false; | |
8596 | return; | |
8597 | } | |
8598 | ivar = c_parser_peek_token (parser)->value; | |
8599 | c_parser_consume_token (parser); | |
8600 | } | |
8601 | else | |
8602 | ivar = NULL_TREE; | |
8603 | list = chainon (list, build_tree_list (ivar, property)); | |
8604 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8605 | c_parser_consume_token (parser); | |
8606 | else | |
8607 | break; | |
8608 | } | |
8609 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8610 | objc_add_synthesize_declaration (loc, list); | |
8611 | } | |
8612 | ||
8613 | /* Parse an Objective-C @dynamic declaration. The syntax is: | |
8614 | ||
8615 | objc-dynamic-declaration: | |
8616 | @dynamic identifier-list ; | |
8617 | ||
8618 | For example: | |
8619 | @dynamic MyProperty; | |
8620 | @dynamic MyProperty, AnotherProperty; | |
8621 | ||
8622 | PS: This function is identical to cp_parser_objc_at_dynamic_declaration | |
8623 | for C++. Keep them in sync. | |
8624 | */ | |
8625 | static void | |
8626 | c_parser_objc_at_dynamic_declaration (c_parser *parser) | |
8627 | { | |
8628 | tree list = NULL_TREE; | |
8629 | location_t loc; | |
8630 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC)); | |
8631 | loc = c_parser_peek_token (parser)->location; | |
8632 | ||
8633 | c_parser_consume_token (parser); | |
8634 | while (true) | |
8635 | { | |
8636 | tree property; | |
8637 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8638 | { | |
8639 | c_parser_error (parser, "expected identifier"); | |
8640 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8641 | parser->error = false; | |
8642 | return; | |
8643 | } | |
8644 | property = c_parser_peek_token (parser)->value; | |
8645 | list = chainon (list, build_tree_list (NULL_TREE, property)); | |
8646 | c_parser_consume_token (parser); | |
8647 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8648 | c_parser_consume_token (parser); | |
8649 | else | |
8650 | break; | |
8651 | } | |
8652 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8653 | objc_add_dynamic_declaration (loc, list); | |
8654 | } | |
8655 | ||
27bf414c | 8656 | \f |
953ff289 DN |
8657 | /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore |
8658 | should be considered, statements. ALLOW_STMT is true if we're within | |
8659 | the context of a function and such pragmas are to be allowed. Returns | |
8660 | true if we actually parsed such a pragma. */ | |
27bf414c | 8661 | |
bc4071dd | 8662 | static bool |
953ff289 | 8663 | c_parser_pragma (c_parser *parser, enum pragma_context context) |
bc4071dd RH |
8664 | { |
8665 | unsigned int id; | |
8666 | ||
8667 | id = c_parser_peek_token (parser)->pragma_kind; | |
8668 | gcc_assert (id != PRAGMA_NONE); | |
8669 | ||
8670 | switch (id) | |
8671 | { | |
953ff289 DN |
8672 | case PRAGMA_OMP_BARRIER: |
8673 | if (context != pragma_compound) | |
8674 | { | |
8675 | if (context == pragma_stmt) | |
8676 | c_parser_error (parser, "%<#pragma omp barrier%> may only be " | |
8677 | "used in compound statements"); | |
8678 | goto bad_stmt; | |
8679 | } | |
8680 | c_parser_omp_barrier (parser); | |
8681 | return false; | |
8682 | ||
8683 | case PRAGMA_OMP_FLUSH: | |
8684 | if (context != pragma_compound) | |
8685 | { | |
8686 | if (context == pragma_stmt) | |
8687 | c_parser_error (parser, "%<#pragma omp flush%> may only be " | |
8688 | "used in compound statements"); | |
8689 | goto bad_stmt; | |
8690 | } | |
8691 | c_parser_omp_flush (parser); | |
8692 | return false; | |
8693 | ||
a68ab351 JJ |
8694 | case PRAGMA_OMP_TASKWAIT: |
8695 | if (context != pragma_compound) | |
8696 | { | |
8697 | if (context == pragma_stmt) | |
8698 | c_parser_error (parser, "%<#pragma omp taskwait%> may only be " | |
8699 | "used in compound statements"); | |
8700 | goto bad_stmt; | |
8701 | } | |
8702 | c_parser_omp_taskwait (parser); | |
8703 | return false; | |
8704 | ||
20906c66 JJ |
8705 | case PRAGMA_OMP_TASKYIELD: |
8706 | if (context != pragma_compound) | |
8707 | { | |
8708 | if (context == pragma_stmt) | |
8709 | c_parser_error (parser, "%<#pragma omp taskyield%> may only be " | |
8710 | "used in compound statements"); | |
8711 | goto bad_stmt; | |
8712 | } | |
8713 | c_parser_omp_taskyield (parser); | |
8714 | return false; | |
8715 | ||
953ff289 DN |
8716 | case PRAGMA_OMP_THREADPRIVATE: |
8717 | c_parser_omp_threadprivate (parser); | |
8718 | return false; | |
8719 | ||
8720 | case PRAGMA_OMP_SECTION: | |
3ba09659 AH |
8721 | error_at (c_parser_peek_token (parser)->location, |
8722 | "%<#pragma omp section%> may only be used in " | |
8723 | "%<#pragma omp sections%> construct"); | |
953ff289 DN |
8724 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); |
8725 | return false; | |
8726 | ||
bc4071dd RH |
8727 | case PRAGMA_GCC_PCH_PREPROCESS: |
8728 | c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first"); | |
8729 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
8730 | return false; | |
8731 | ||
8732 | default: | |
953ff289 DN |
8733 | if (id < PRAGMA_FIRST_EXTERNAL) |
8734 | { | |
8735 | if (context == pragma_external) | |
8736 | { | |
8737 | bad_stmt: | |
8738 | c_parser_error (parser, "expected declaration specifiers"); | |
8739 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
8740 | return false; | |
8741 | } | |
8742 | c_parser_omp_construct (parser); | |
8743 | return true; | |
8744 | } | |
bc4071dd RH |
8745 | break; |
8746 | } | |
8747 | ||
8748 | c_parser_consume_pragma (parser); | |
8749 | c_invoke_pragma_handler (id); | |
27bf414c | 8750 | |
b8698a0f | 8751 | /* Skip to EOL, but suppress any error message. Those will have been |
bc4071dd RH |
8752 | generated by the handler routine through calling error, as opposed |
8753 | to calling c_parser_error. */ | |
8754 | parser->error = true; | |
8755 | c_parser_skip_to_pragma_eol (parser); | |
8756 | ||
8757 | return false; | |
8758 | } | |
8759 | ||
8760 | /* The interface the pragma parsers have to the lexer. */ | |
8761 | ||
8762 | enum cpp_ttype | |
8763 | pragma_lex (tree *value) | |
8764 | { | |
8765 | c_token *tok = c_parser_peek_token (the_parser); | |
8766 | enum cpp_ttype ret = tok->type; | |
8767 | ||
8768 | *value = tok->value; | |
8769 | if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF) | |
8770 | ret = CPP_EOF; | |
8771 | else | |
8772 | { | |
8773 | if (ret == CPP_KEYWORD) | |
8774 | ret = CPP_NAME; | |
8775 | c_parser_consume_token (the_parser); | |
8776 | } | |
8777 | ||
8778 | return ret; | |
8779 | } | |
8780 | ||
8781 | static void | |
8782 | c_parser_pragma_pch_preprocess (c_parser *parser) | |
8783 | { | |
8784 | tree name = NULL; | |
8785 | ||
8786 | c_parser_consume_pragma (parser); | |
8787 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
8788 | { | |
8789 | name = c_parser_peek_token (parser)->value; | |
8790 | c_parser_consume_token (parser); | |
8791 | } | |
8792 | else | |
8793 | c_parser_error (parser, "expected string literal"); | |
8794 | c_parser_skip_to_pragma_eol (parser); | |
8795 | ||
8796 | if (name) | |
8797 | c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name)); | |
8798 | } | |
953ff289 DN |
8799 | \f |
8800 | /* OpenMP 2.5 parsing routines. */ | |
8801 | ||
8802 | /* Returns name of the next clause. | |
8803 | If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and | |
8804 | the token is not consumed. Otherwise appropriate pragma_omp_clause is | |
8805 | returned and the token is consumed. */ | |
8806 | ||
8807 | static pragma_omp_clause | |
8808 | c_parser_omp_clause_name (c_parser *parser) | |
8809 | { | |
8810 | pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE; | |
8811 | ||
8812 | if (c_parser_next_token_is_keyword (parser, RID_IF)) | |
8813 | result = PRAGMA_OMP_CLAUSE_IF; | |
8814 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
8815 | result = PRAGMA_OMP_CLAUSE_DEFAULT; | |
8816 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
8817 | { | |
8818 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
8819 | ||
8820 | switch (p[0]) | |
8821 | { | |
8822 | case 'c': | |
a68ab351 JJ |
8823 | if (!strcmp ("collapse", p)) |
8824 | result = PRAGMA_OMP_CLAUSE_COLLAPSE; | |
8825 | else if (!strcmp ("copyin", p)) | |
953ff289 DN |
8826 | result = PRAGMA_OMP_CLAUSE_COPYIN; |
8827 | else if (!strcmp ("copyprivate", p)) | |
8828 | result = PRAGMA_OMP_CLAUSE_COPYPRIVATE; | |
8829 | break; | |
8830 | case 'f': | |
20906c66 JJ |
8831 | if (!strcmp ("final", p)) |
8832 | result = PRAGMA_OMP_CLAUSE_FINAL; | |
8833 | else if (!strcmp ("firstprivate", p)) | |
953ff289 DN |
8834 | result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE; |
8835 | break; | |
8836 | case 'l': | |
8837 | if (!strcmp ("lastprivate", p)) | |
8838 | result = PRAGMA_OMP_CLAUSE_LASTPRIVATE; | |
8839 | break; | |
20906c66 JJ |
8840 | case 'm': |
8841 | if (!strcmp ("mergeable", p)) | |
8842 | result = PRAGMA_OMP_CLAUSE_MERGEABLE; | |
8843 | break; | |
953ff289 DN |
8844 | case 'n': |
8845 | if (!strcmp ("nowait", p)) | |
8846 | result = PRAGMA_OMP_CLAUSE_NOWAIT; | |
8847 | else if (!strcmp ("num_threads", p)) | |
8848 | result = PRAGMA_OMP_CLAUSE_NUM_THREADS; | |
8849 | break; | |
8850 | case 'o': | |
8851 | if (!strcmp ("ordered", p)) | |
8852 | result = PRAGMA_OMP_CLAUSE_ORDERED; | |
8853 | break; | |
8854 | case 'p': | |
8855 | if (!strcmp ("private", p)) | |
8856 | result = PRAGMA_OMP_CLAUSE_PRIVATE; | |
8857 | break; | |
8858 | case 'r': | |
8859 | if (!strcmp ("reduction", p)) | |
8860 | result = PRAGMA_OMP_CLAUSE_REDUCTION; | |
8861 | break; | |
8862 | case 's': | |
8863 | if (!strcmp ("schedule", p)) | |
8864 | result = PRAGMA_OMP_CLAUSE_SCHEDULE; | |
8865 | else if (!strcmp ("shared", p)) | |
8866 | result = PRAGMA_OMP_CLAUSE_SHARED; | |
8867 | break; | |
a68ab351 JJ |
8868 | case 'u': |
8869 | if (!strcmp ("untied", p)) | |
8870 | result = PRAGMA_OMP_CLAUSE_UNTIED; | |
8871 | break; | |
953ff289 DN |
8872 | } |
8873 | } | |
8874 | ||
8875 | if (result != PRAGMA_OMP_CLAUSE_NONE) | |
8876 | c_parser_consume_token (parser); | |
8877 | ||
8878 | return result; | |
8879 | } | |
8880 | ||
8881 | /* Validate that a clause of the given type does not already exist. */ | |
8882 | ||
8883 | static void | |
d75d71e0 ILT |
8884 | check_no_duplicate_clause (tree clauses, enum omp_clause_code code, |
8885 | const char *name) | |
953ff289 DN |
8886 | { |
8887 | tree c; | |
8888 | ||
8889 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
aaf46ef9 | 8890 | if (OMP_CLAUSE_CODE (c) == code) |
953ff289 | 8891 | { |
c2255bc4 AH |
8892 | location_t loc = OMP_CLAUSE_LOCATION (c); |
8893 | error_at (loc, "too many %qs clauses", name); | |
953ff289 DN |
8894 | break; |
8895 | } | |
8896 | } | |
8897 | ||
8898 | /* OpenMP 2.5: | |
8899 | variable-list: | |
8900 | identifier | |
8901 | variable-list , identifier | |
8902 | ||
c2255bc4 AH |
8903 | If KIND is nonzero, create the appropriate node and install the |
8904 | decl in OMP_CLAUSE_DECL and add the node to the head of the list. | |
8905 | If KIND is nonzero, CLAUSE_LOC is the location of the clause. | |
953ff289 DN |
8906 | |
8907 | If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE; | |
8908 | return the list created. */ | |
8909 | ||
8910 | static tree | |
c2255bc4 AH |
8911 | c_parser_omp_variable_list (c_parser *parser, |
8912 | location_t clause_loc, | |
8913 | enum omp_clause_code kind, | |
aaf46ef9 | 8914 | tree list) |
953ff289 DN |
8915 | { |
8916 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
8917 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
8918 | c_parser_error (parser, "expected identifier"); | |
8919 | ||
8920 | while (c_parser_next_token_is (parser, CPP_NAME) | |
8921 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
8922 | { | |
8923 | tree t = lookup_name (c_parser_peek_token (parser)->value); | |
8924 | ||
8925 | if (t == NULL_TREE) | |
c2255bc4 AH |
8926 | undeclared_variable (c_parser_peek_token (parser)->location, |
8927 | c_parser_peek_token (parser)->value); | |
953ff289 DN |
8928 | else if (t == error_mark_node) |
8929 | ; | |
8930 | else if (kind != 0) | |
8931 | { | |
c2255bc4 | 8932 | tree u = build_omp_clause (clause_loc, kind); |
953ff289 DN |
8933 | OMP_CLAUSE_DECL (u) = t; |
8934 | OMP_CLAUSE_CHAIN (u) = list; | |
8935 | list = u; | |
8936 | } | |
8937 | else | |
8938 | list = tree_cons (t, NULL_TREE, list); | |
8939 | ||
8940 | c_parser_consume_token (parser); | |
8941 | ||
8942 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
8943 | break; | |
8944 | ||
8945 | c_parser_consume_token (parser); | |
8946 | } | |
8947 | ||
8948 | return list; | |
8949 | } | |
8950 | ||
8951 | /* Similarly, but expect leading and trailing parenthesis. This is a very | |
8952 | common case for omp clauses. */ | |
8953 | ||
8954 | static tree | |
d75d71e0 ILT |
8955 | c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind, |
8956 | tree list) | |
953ff289 | 8957 | { |
c2255bc4 AH |
8958 | /* The clauses location. */ |
8959 | location_t loc = c_parser_peek_token (parser)->location; | |
8960 | ||
953ff289 DN |
8961 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8962 | { | |
c2255bc4 | 8963 | list = c_parser_omp_variable_list (parser, loc, kind, list); |
953ff289 DN |
8964 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8965 | } | |
8966 | return list; | |
8967 | } | |
8968 | ||
a68ab351 JJ |
8969 | /* OpenMP 3.0: |
8970 | collapse ( constant-expression ) */ | |
8971 | ||
8972 | static tree | |
8973 | c_parser_omp_clause_collapse (c_parser *parser, tree list) | |
8974 | { | |
8975 | tree c, num = error_mark_node; | |
8976 | HOST_WIDE_INT n; | |
8977 | location_t loc; | |
8978 | ||
8979 | check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse"); | |
8980 | ||
8981 | loc = c_parser_peek_token (parser)->location; | |
8982 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8983 | { | |
8984 | num = c_parser_expr_no_commas (parser, NULL).value; | |
8985 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8986 | } | |
8987 | if (num == error_mark_node) | |
8988 | return list; | |
8989 | if (!INTEGRAL_TYPE_P (TREE_TYPE (num)) | |
8990 | || !host_integerp (num, 0) | |
8991 | || (n = tree_low_cst (num, 0)) <= 0 | |
8992 | || (int) n != n) | |
8993 | { | |
3ba09659 AH |
8994 | error_at (loc, |
8995 | "collapse argument needs positive constant integer expression"); | |
a68ab351 JJ |
8996 | return list; |
8997 | } | |
c2255bc4 | 8998 | c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE); |
a68ab351 JJ |
8999 | OMP_CLAUSE_COLLAPSE_EXPR (c) = num; |
9000 | OMP_CLAUSE_CHAIN (c) = list; | |
9001 | return c; | |
9002 | } | |
9003 | ||
953ff289 DN |
9004 | /* OpenMP 2.5: |
9005 | copyin ( variable-list ) */ | |
9006 | ||
9007 | static tree | |
9008 | c_parser_omp_clause_copyin (c_parser *parser, tree list) | |
9009 | { | |
9010 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list); | |
9011 | } | |
9012 | ||
9013 | /* OpenMP 2.5: | |
9014 | copyprivate ( variable-list ) */ | |
9015 | ||
9016 | static tree | |
9017 | c_parser_omp_clause_copyprivate (c_parser *parser, tree list) | |
9018 | { | |
9019 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list); | |
9020 | } | |
9021 | ||
9022 | /* OpenMP 2.5: | |
9023 | default ( shared | none ) */ | |
9024 | ||
9025 | static tree | |
9026 | c_parser_omp_clause_default (c_parser *parser, tree list) | |
9027 | { | |
9028 | enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
c2255bc4 | 9029 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9030 | tree c; |
9031 | ||
9032 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
9033 | return list; | |
9034 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9035 | { | |
9036 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9037 | ||
9038 | switch (p[0]) | |
9039 | { | |
9040 | case 'n': | |
9041 | if (strcmp ("none", p) != 0) | |
9042 | goto invalid_kind; | |
9043 | kind = OMP_CLAUSE_DEFAULT_NONE; | |
9044 | break; | |
9045 | ||
9046 | case 's': | |
9047 | if (strcmp ("shared", p) != 0) | |
9048 | goto invalid_kind; | |
9049 | kind = OMP_CLAUSE_DEFAULT_SHARED; | |
9050 | break; | |
9051 | ||
9052 | default: | |
9053 | goto invalid_kind; | |
9054 | } | |
9055 | ||
9056 | c_parser_consume_token (parser); | |
9057 | } | |
9058 | else | |
9059 | { | |
9060 | invalid_kind: | |
9061 | c_parser_error (parser, "expected %<none%> or %<shared%>"); | |
9062 | } | |
9063 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9064 | ||
9065 | if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
9066 | return list; | |
9067 | ||
9068 | check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default"); | |
c2255bc4 | 9069 | c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT); |
953ff289 DN |
9070 | OMP_CLAUSE_CHAIN (c) = list; |
9071 | OMP_CLAUSE_DEFAULT_KIND (c) = kind; | |
9072 | ||
9073 | return c; | |
9074 | } | |
9075 | ||
9076 | /* OpenMP 2.5: | |
9077 | firstprivate ( variable-list ) */ | |
9078 | ||
9079 | static tree | |
9080 | c_parser_omp_clause_firstprivate (c_parser *parser, tree list) | |
9081 | { | |
9082 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list); | |
9083 | } | |
9084 | ||
20906c66 JJ |
9085 | /* OpenMP 3.1: |
9086 | final ( expression ) */ | |
9087 | ||
9088 | static tree | |
9089 | c_parser_omp_clause_final (c_parser *parser, tree list) | |
9090 | { | |
9091 | location_t loc = c_parser_peek_token (parser)->location; | |
9092 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
9093 | { | |
9094 | tree t = c_parser_paren_condition (parser); | |
9095 | tree c; | |
9096 | ||
9097 | check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final"); | |
9098 | ||
9099 | c = build_omp_clause (loc, OMP_CLAUSE_FINAL); | |
9100 | OMP_CLAUSE_FINAL_EXPR (c) = t; | |
9101 | OMP_CLAUSE_CHAIN (c) = list; | |
9102 | list = c; | |
9103 | } | |
9104 | else | |
9105 | c_parser_error (parser, "expected %<(%>"); | |
9106 | ||
9107 | return list; | |
9108 | } | |
9109 | ||
953ff289 DN |
9110 | /* OpenMP 2.5: |
9111 | if ( expression ) */ | |
9112 | ||
9113 | static tree | |
9114 | c_parser_omp_clause_if (c_parser *parser, tree list) | |
9115 | { | |
c2255bc4 | 9116 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9117 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
9118 | { | |
9119 | tree t = c_parser_paren_condition (parser); | |
9120 | tree c; | |
9121 | ||
9122 | check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if"); | |
9123 | ||
c2255bc4 | 9124 | c = build_omp_clause (loc, OMP_CLAUSE_IF); |
953ff289 DN |
9125 | OMP_CLAUSE_IF_EXPR (c) = t; |
9126 | OMP_CLAUSE_CHAIN (c) = list; | |
9127 | list = c; | |
9128 | } | |
9129 | else | |
9130 | c_parser_error (parser, "expected %<(%>"); | |
9131 | ||
9132 | return list; | |
9133 | } | |
9134 | ||
9135 | /* OpenMP 2.5: | |
9136 | lastprivate ( variable-list ) */ | |
9137 | ||
9138 | static tree | |
9139 | c_parser_omp_clause_lastprivate (c_parser *parser, tree list) | |
9140 | { | |
9141 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list); | |
9142 | } | |
9143 | ||
20906c66 JJ |
9144 | /* OpenMP 3.1: |
9145 | mergeable */ | |
9146 | ||
9147 | static tree | |
9148 | c_parser_omp_clause_mergeable (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
9149 | { | |
9150 | tree c; | |
9151 | ||
9152 | /* FIXME: Should we allow duplicates? */ | |
9153 | check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable"); | |
9154 | ||
9155 | c = build_omp_clause (c_parser_peek_token (parser)->location, | |
9156 | OMP_CLAUSE_MERGEABLE); | |
9157 | OMP_CLAUSE_CHAIN (c) = list; | |
9158 | ||
9159 | return c; | |
9160 | } | |
9161 | ||
953ff289 DN |
9162 | /* OpenMP 2.5: |
9163 | nowait */ | |
9164 | ||
9165 | static tree | |
9166 | c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
9167 | { | |
9168 | tree c; | |
c2255bc4 | 9169 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9170 | |
9171 | check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait"); | |
9172 | ||
c2255bc4 | 9173 | c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT); |
953ff289 DN |
9174 | OMP_CLAUSE_CHAIN (c) = list; |
9175 | return c; | |
9176 | } | |
9177 | ||
9178 | /* OpenMP 2.5: | |
9179 | num_threads ( expression ) */ | |
9180 | ||
9181 | static tree | |
9182 | c_parser_omp_clause_num_threads (c_parser *parser, tree list) | |
9183 | { | |
c2255bc4 | 9184 | location_t num_threads_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9185 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9186 | { | |
c7412148 | 9187 | location_t expr_loc = c_parser_peek_token (parser)->location; |
953ff289 | 9188 | tree c, t = c_parser_expression (parser).value; |
7d1362bc | 9189 | mark_exp_read (t); |
928c19bb | 9190 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
9191 | |
9192 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9193 | ||
9194 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
9195 | { | |
9196 | c_parser_error (parser, "expected integer expression"); | |
9197 | return list; | |
9198 | } | |
9199 | ||
9200 | /* Attempt to statically determine when the number isn't positive. */ | |
db3927fb | 9201 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, |
953ff289 | 9202 | build_int_cst (TREE_TYPE (t), 0)); |
c2255bc4 AH |
9203 | if (CAN_HAVE_LOCATION_P (c)) |
9204 | SET_EXPR_LOCATION (c, expr_loc); | |
953ff289 DN |
9205 | if (c == boolean_true_node) |
9206 | { | |
3ba09659 AH |
9207 | warning_at (expr_loc, 0, |
9208 | "%<num_threads%> value must be positive"); | |
953ff289 DN |
9209 | t = integer_one_node; |
9210 | } | |
9211 | ||
9212 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads"); | |
9213 | ||
c2255bc4 | 9214 | c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS); |
953ff289 DN |
9215 | OMP_CLAUSE_NUM_THREADS_EXPR (c) = t; |
9216 | OMP_CLAUSE_CHAIN (c) = list; | |
9217 | list = c; | |
9218 | } | |
9219 | ||
9220 | return list; | |
9221 | } | |
9222 | ||
9223 | /* OpenMP 2.5: | |
9224 | ordered */ | |
9225 | ||
9226 | static tree | |
c2255bc4 | 9227 | c_parser_omp_clause_ordered (c_parser *parser, tree list) |
953ff289 DN |
9228 | { |
9229 | tree c; | |
9230 | ||
9231 | check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered"); | |
9232 | ||
c2255bc4 AH |
9233 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
9234 | OMP_CLAUSE_ORDERED); | |
953ff289 | 9235 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 9236 | |
953ff289 DN |
9237 | return c; |
9238 | } | |
9239 | ||
9240 | /* OpenMP 2.5: | |
9241 | private ( variable-list ) */ | |
9242 | ||
9243 | static tree | |
9244 | c_parser_omp_clause_private (c_parser *parser, tree list) | |
9245 | { | |
9246 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list); | |
9247 | } | |
9248 | ||
9249 | /* OpenMP 2.5: | |
9250 | reduction ( reduction-operator : variable-list ) | |
9251 | ||
9252 | reduction-operator: | |
20906c66 JJ |
9253 | One of: + * - & ^ | && || |
9254 | ||
9255 | OpenMP 3.1: | |
9256 | ||
9257 | reduction-operator: | |
9258 | One of: + * - & ^ | && || max min */ | |
953ff289 DN |
9259 | |
9260 | static tree | |
9261 | c_parser_omp_clause_reduction (c_parser *parser, tree list) | |
9262 | { | |
c2255bc4 | 9263 | location_t clause_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9264 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9265 | { | |
9266 | enum tree_code code; | |
9267 | ||
9268 | switch (c_parser_peek_token (parser)->type) | |
9269 | { | |
9270 | case CPP_PLUS: | |
9271 | code = PLUS_EXPR; | |
9272 | break; | |
9273 | case CPP_MULT: | |
9274 | code = MULT_EXPR; | |
9275 | break; | |
9276 | case CPP_MINUS: | |
9277 | code = MINUS_EXPR; | |
9278 | break; | |
9279 | case CPP_AND: | |
9280 | code = BIT_AND_EXPR; | |
9281 | break; | |
9282 | case CPP_XOR: | |
9283 | code = BIT_XOR_EXPR; | |
9284 | break; | |
9285 | case CPP_OR: | |
9286 | code = BIT_IOR_EXPR; | |
9287 | break; | |
9288 | case CPP_AND_AND: | |
9289 | code = TRUTH_ANDIF_EXPR; | |
9290 | break; | |
9291 | case CPP_OR_OR: | |
9292 | code = TRUTH_ORIF_EXPR; | |
9293 | break; | |
20906c66 JJ |
9294 | case CPP_NAME: |
9295 | { | |
9296 | const char *p | |
9297 | = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9298 | if (strcmp (p, "min") == 0) | |
9299 | { | |
9300 | code = MIN_EXPR; | |
9301 | break; | |
9302 | } | |
9303 | if (strcmp (p, "max") == 0) | |
9304 | { | |
9305 | code = MAX_EXPR; | |
9306 | break; | |
9307 | } | |
9308 | } | |
9309 | /* FALLTHRU */ | |
953ff289 DN |
9310 | default: |
9311 | c_parser_error (parser, | |
9312 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
20906c66 | 9313 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>"); |
953ff289 DN |
9314 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); |
9315 | return list; | |
9316 | } | |
9317 | c_parser_consume_token (parser); | |
9318 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
9319 | { | |
9320 | tree nl, c; | |
9321 | ||
c2255bc4 AH |
9322 | nl = c_parser_omp_variable_list (parser, clause_loc, |
9323 | OMP_CLAUSE_REDUCTION, list); | |
953ff289 DN |
9324 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
9325 | OMP_CLAUSE_REDUCTION_CODE (c) = code; | |
9326 | ||
9327 | list = nl; | |
9328 | } | |
9329 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9330 | } | |
9331 | return list; | |
9332 | } | |
9333 | ||
9334 | /* OpenMP 2.5: | |
9335 | schedule ( schedule-kind ) | |
9336 | schedule ( schedule-kind , expression ) | |
9337 | ||
9338 | schedule-kind: | |
a68ab351 | 9339 | static | dynamic | guided | runtime | auto |
953ff289 DN |
9340 | */ |
9341 | ||
9342 | static tree | |
9343 | c_parser_omp_clause_schedule (c_parser *parser, tree list) | |
9344 | { | |
9345 | tree c, t; | |
c2255bc4 | 9346 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9347 | |
9348 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
9349 | return list; | |
9350 | ||
c2255bc4 | 9351 | c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE); |
953ff289 DN |
9352 | |
9353 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9354 | { | |
9355 | tree kind = c_parser_peek_token (parser)->value; | |
9356 | const char *p = IDENTIFIER_POINTER (kind); | |
9357 | ||
9358 | switch (p[0]) | |
9359 | { | |
9360 | case 'd': | |
9361 | if (strcmp ("dynamic", p) != 0) | |
9362 | goto invalid_kind; | |
9363 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC; | |
9364 | break; | |
9365 | ||
9366 | case 'g': | |
9367 | if (strcmp ("guided", p) != 0) | |
9368 | goto invalid_kind; | |
9369 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED; | |
9370 | break; | |
9371 | ||
9372 | case 'r': | |
9373 | if (strcmp ("runtime", p) != 0) | |
9374 | goto invalid_kind; | |
9375 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME; | |
9376 | break; | |
9377 | ||
9378 | default: | |
9379 | goto invalid_kind; | |
9380 | } | |
9381 | } | |
9382 | else if (c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
9383 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC; | |
a68ab351 JJ |
9384 | else if (c_parser_next_token_is_keyword (parser, RID_AUTO)) |
9385 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO; | |
953ff289 DN |
9386 | else |
9387 | goto invalid_kind; | |
9388 | ||
9389 | c_parser_consume_token (parser); | |
9390 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9391 | { | |
c7412148 | 9392 | location_t here; |
953ff289 DN |
9393 | c_parser_consume_token (parser); |
9394 | ||
c7412148 | 9395 | here = c_parser_peek_token (parser)->location; |
953ff289 | 9396 | t = c_parser_expr_no_commas (parser, NULL).value; |
7d1362bc | 9397 | mark_exp_read (t); |
928c19bb | 9398 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
9399 | |
9400 | if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
3ba09659 AH |
9401 | error_at (here, "schedule %<runtime%> does not take " |
9402 | "a %<chunk_size%> parameter"); | |
a68ab351 | 9403 | else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO) |
3ba09659 AH |
9404 | error_at (here, |
9405 | "schedule %<auto%> does not take " | |
9406 | "a %<chunk_size%> parameter"); | |
953ff289 DN |
9407 | else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE) |
9408 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
9409 | else | |
9410 | c_parser_error (parser, "expected integer expression"); | |
9411 | ||
9412 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9413 | } | |
9414 | else | |
9415 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
9416 | "expected %<,%> or %<)%>"); | |
9417 | ||
9418 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
9419 | OMP_CLAUSE_CHAIN (c) = list; | |
9420 | return c; | |
9421 | ||
9422 | invalid_kind: | |
9423 | c_parser_error (parser, "invalid schedule kind"); | |
9424 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
9425 | return list; | |
9426 | } | |
9427 | ||
9428 | /* OpenMP 2.5: | |
9429 | shared ( variable-list ) */ | |
9430 | ||
9431 | static tree | |
9432 | c_parser_omp_clause_shared (c_parser *parser, tree list) | |
9433 | { | |
9434 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list); | |
9435 | } | |
9436 | ||
a68ab351 JJ |
9437 | /* OpenMP 3.0: |
9438 | untied */ | |
9439 | ||
9440 | static tree | |
9441 | c_parser_omp_clause_untied (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
9442 | { | |
9443 | tree c; | |
9444 | ||
9445 | /* FIXME: Should we allow duplicates? */ | |
9446 | check_no_duplicate_clause (list, OMP_CLAUSE_UNTIED, "untied"); | |
9447 | ||
c2255bc4 AH |
9448 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
9449 | OMP_CLAUSE_UNTIED); | |
a68ab351 | 9450 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 9451 | |
a68ab351 JJ |
9452 | return c; |
9453 | } | |
9454 | ||
953ff289 DN |
9455 | /* Parse all OpenMP clauses. The set clauses allowed by the directive |
9456 | is a bitmask in MASK. Return the list of clauses found; the result | |
9457 | of clause default goes in *pdefault. */ | |
9458 | ||
9459 | static tree | |
9460 | c_parser_omp_all_clauses (c_parser *parser, unsigned int mask, | |
9461 | const char *where) | |
9462 | { | |
9463 | tree clauses = NULL; | |
8085ca15 | 9464 | bool first = true; |
953ff289 DN |
9465 | |
9466 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
9467 | { | |
8085ca15 JJ |
9468 | location_t here; |
9469 | pragma_omp_clause c_kind; | |
953ff289 DN |
9470 | const char *c_name; |
9471 | tree prev = clauses; | |
9472 | ||
8085ca15 JJ |
9473 | if (!first && c_parser_next_token_is (parser, CPP_COMMA)) |
9474 | c_parser_consume_token (parser); | |
9475 | ||
9476 | first = false; | |
9477 | here = c_parser_peek_token (parser)->location; | |
9478 | c_kind = c_parser_omp_clause_name (parser); | |
9479 | ||
953ff289 DN |
9480 | switch (c_kind) |
9481 | { | |
a68ab351 JJ |
9482 | case PRAGMA_OMP_CLAUSE_COLLAPSE: |
9483 | clauses = c_parser_omp_clause_collapse (parser, clauses); | |
9484 | c_name = "collapse"; | |
9485 | break; | |
953ff289 DN |
9486 | case PRAGMA_OMP_CLAUSE_COPYIN: |
9487 | clauses = c_parser_omp_clause_copyin (parser, clauses); | |
9488 | c_name = "copyin"; | |
9489 | break; | |
9490 | case PRAGMA_OMP_CLAUSE_COPYPRIVATE: | |
9491 | clauses = c_parser_omp_clause_copyprivate (parser, clauses); | |
9492 | c_name = "copyprivate"; | |
9493 | break; | |
9494 | case PRAGMA_OMP_CLAUSE_DEFAULT: | |
9495 | clauses = c_parser_omp_clause_default (parser, clauses); | |
9496 | c_name = "default"; | |
9497 | break; | |
9498 | case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE: | |
9499 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
9500 | c_name = "firstprivate"; | |
9501 | break; | |
20906c66 JJ |
9502 | case PRAGMA_OMP_CLAUSE_FINAL: |
9503 | clauses = c_parser_omp_clause_final (parser, clauses); | |
9504 | c_name = "final"; | |
9505 | break; | |
953ff289 DN |
9506 | case PRAGMA_OMP_CLAUSE_IF: |
9507 | clauses = c_parser_omp_clause_if (parser, clauses); | |
9508 | c_name = "if"; | |
9509 | break; | |
9510 | case PRAGMA_OMP_CLAUSE_LASTPRIVATE: | |
9511 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
9512 | c_name = "lastprivate"; | |
9513 | break; | |
20906c66 JJ |
9514 | case PRAGMA_OMP_CLAUSE_MERGEABLE: |
9515 | clauses = c_parser_omp_clause_mergeable (parser, clauses); | |
9516 | c_name = "mergeable"; | |
9517 | break; | |
953ff289 DN |
9518 | case PRAGMA_OMP_CLAUSE_NOWAIT: |
9519 | clauses = c_parser_omp_clause_nowait (parser, clauses); | |
9520 | c_name = "nowait"; | |
9521 | break; | |
9522 | case PRAGMA_OMP_CLAUSE_NUM_THREADS: | |
9523 | clauses = c_parser_omp_clause_num_threads (parser, clauses); | |
9524 | c_name = "num_threads"; | |
9525 | break; | |
9526 | case PRAGMA_OMP_CLAUSE_ORDERED: | |
9527 | clauses = c_parser_omp_clause_ordered (parser, clauses); | |
9528 | c_name = "ordered"; | |
9529 | break; | |
9530 | case PRAGMA_OMP_CLAUSE_PRIVATE: | |
9531 | clauses = c_parser_omp_clause_private (parser, clauses); | |
9532 | c_name = "private"; | |
9533 | break; | |
9534 | case PRAGMA_OMP_CLAUSE_REDUCTION: | |
9535 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
9536 | c_name = "reduction"; | |
9537 | break; | |
9538 | case PRAGMA_OMP_CLAUSE_SCHEDULE: | |
9539 | clauses = c_parser_omp_clause_schedule (parser, clauses); | |
9540 | c_name = "schedule"; | |
9541 | break; | |
9542 | case PRAGMA_OMP_CLAUSE_SHARED: | |
9543 | clauses = c_parser_omp_clause_shared (parser, clauses); | |
9544 | c_name = "shared"; | |
9545 | break; | |
a68ab351 JJ |
9546 | case PRAGMA_OMP_CLAUSE_UNTIED: |
9547 | clauses = c_parser_omp_clause_untied (parser, clauses); | |
9548 | c_name = "untied"; | |
9549 | break; | |
953ff289 DN |
9550 | default: |
9551 | c_parser_error (parser, "expected %<#pragma omp%> clause"); | |
9552 | goto saw_error; | |
9553 | } | |
9554 | ||
9555 | if (((mask >> c_kind) & 1) == 0 && !parser->error) | |
9556 | { | |
9557 | /* Remove the invalid clause(s) from the list to avoid | |
9558 | confusing the rest of the compiler. */ | |
9559 | clauses = prev; | |
3ba09659 | 9560 | error_at (here, "%qs is not valid for %qs", c_name, where); |
953ff289 DN |
9561 | } |
9562 | } | |
9563 | ||
9564 | saw_error: | |
9565 | c_parser_skip_to_pragma_eol (parser); | |
9566 | ||
9567 | return c_finish_omp_clauses (clauses); | |
9568 | } | |
9569 | ||
9570 | /* OpenMP 2.5: | |
9571 | structured-block: | |
9572 | statement | |
9573 | ||
9574 | In practice, we're also interested in adding the statement to an | |
9575 | outer node. So it is convenient if we work around the fact that | |
9576 | c_parser_statement calls add_stmt. */ | |
9577 | ||
9578 | static tree | |
9579 | c_parser_omp_structured_block (c_parser *parser) | |
9580 | { | |
9581 | tree stmt = push_stmt_list (); | |
9582 | c_parser_statement (parser); | |
9583 | return pop_stmt_list (stmt); | |
9584 | } | |
9585 | ||
9586 | /* OpenMP 2.5: | |
9587 | # pragma omp atomic new-line | |
9588 | expression-stmt | |
9589 | ||
9590 | expression-stmt: | |
9591 | x binop= expr | x++ | ++x | x-- | --x | |
9592 | binop: | |
9593 | +, *, -, /, &, ^, |, <<, >> | |
9594 | ||
b8698a0f | 9595 | where x is an lvalue expression with scalar type. |
c2255bc4 | 9596 | |
20906c66 JJ |
9597 | OpenMP 3.1: |
9598 | # pragma omp atomic new-line | |
9599 | update-stmt | |
9600 | ||
9601 | # pragma omp atomic read new-line | |
9602 | read-stmt | |
9603 | ||
9604 | # pragma omp atomic write new-line | |
9605 | write-stmt | |
9606 | ||
9607 | # pragma omp atomic update new-line | |
9608 | update-stmt | |
9609 | ||
9610 | # pragma omp atomic capture new-line | |
9611 | capture-stmt | |
9612 | ||
9613 | # pragma omp atomic capture new-line | |
9614 | capture-block | |
9615 | ||
9616 | read-stmt: | |
9617 | v = x | |
9618 | write-stmt: | |
9619 | x = expr | |
9620 | update-stmt: | |
9621 | expression-stmt | x = x binop expr | |
9622 | capture-stmt: | |
9623 | v = x binop= expr | v = x++ | v = ++x | v = x-- | v = --x | |
9624 | capture-block: | |
9625 | { v = x; update-stmt; } | { update-stmt; v = x; } | |
9626 | ||
9627 | where x and v are lvalue expressions with scalar type. | |
9628 | ||
c2255bc4 | 9629 | LOC is the location of the #pragma token. */ |
953ff289 DN |
9630 | |
9631 | static void | |
c2255bc4 | 9632 | c_parser_omp_atomic (location_t loc, c_parser *parser) |
953ff289 | 9633 | { |
20906c66 JJ |
9634 | tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE; |
9635 | tree lhs1 = NULL_TREE, rhs1 = NULL_TREE; | |
9636 | tree stmt, orig_lhs; | |
9637 | enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR; | |
79addd1f | 9638 | struct c_expr rhs_expr; |
20906c66 | 9639 | bool structured_block = false; |
953ff289 | 9640 | |
20906c66 JJ |
9641 | if (c_parser_next_token_is (parser, CPP_NAME)) |
9642 | { | |
9643 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9644 | ||
9645 | if (!strcmp (p, "read")) | |
9646 | code = OMP_ATOMIC_READ; | |
9647 | else if (!strcmp (p, "write")) | |
9648 | code = NOP_EXPR; | |
9649 | else if (!strcmp (p, "update")) | |
9650 | code = OMP_ATOMIC; | |
9651 | else if (!strcmp (p, "capture")) | |
9652 | code = OMP_ATOMIC_CAPTURE_NEW; | |
9653 | else | |
9654 | p = NULL; | |
9655 | if (p) | |
9656 | c_parser_consume_token (parser); | |
9657 | } | |
953ff289 DN |
9658 | c_parser_skip_to_pragma_eol (parser); |
9659 | ||
20906c66 JJ |
9660 | switch (code) |
9661 | { | |
9662 | case OMP_ATOMIC_READ: | |
9663 | case NOP_EXPR: /* atomic write */ | |
9664 | v = c_parser_unary_expression (parser).value; | |
9665 | v = c_fully_fold (v, false, NULL); | |
9666 | if (v == error_mark_node) | |
9667 | goto saw_error; | |
9668 | loc = c_parser_peek_token (parser)->location; | |
9669 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9670 | goto saw_error; | |
9671 | if (code == NOP_EXPR) | |
9672 | lhs = c_parser_expression (parser).value; | |
9673 | else | |
9674 | lhs = c_parser_unary_expression (parser).value; | |
9675 | lhs = c_fully_fold (lhs, false, NULL); | |
9676 | if (lhs == error_mark_node) | |
9677 | goto saw_error; | |
9678 | if (code == NOP_EXPR) | |
9679 | { | |
9680 | /* atomic write is represented by OMP_ATOMIC with NOP_EXPR | |
9681 | opcode. */ | |
9682 | code = OMP_ATOMIC; | |
9683 | rhs = lhs; | |
9684 | lhs = v; | |
9685 | v = NULL_TREE; | |
9686 | } | |
9687 | goto done; | |
9688 | case OMP_ATOMIC_CAPTURE_NEW: | |
9689 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
9690 | { | |
9691 | c_parser_consume_token (parser); | |
9692 | structured_block = true; | |
9693 | } | |
9694 | else | |
9695 | { | |
9696 | v = c_parser_unary_expression (parser).value; | |
9697 | v = c_fully_fold (v, false, NULL); | |
9698 | if (v == error_mark_node) | |
9699 | goto saw_error; | |
9700 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9701 | goto saw_error; | |
9702 | } | |
9703 | break; | |
9704 | default: | |
9705 | break; | |
9706 | } | |
9707 | ||
9708 | /* For structured_block case we don't know yet whether | |
9709 | old or new x should be captured. */ | |
9710 | restart: | |
953ff289 | 9711 | lhs = c_parser_unary_expression (parser).value; |
928c19bb | 9712 | lhs = c_fully_fold (lhs, false, NULL); |
20906c66 | 9713 | orig_lhs = lhs; |
953ff289 DN |
9714 | switch (TREE_CODE (lhs)) |
9715 | { | |
9716 | case ERROR_MARK: | |
9717 | saw_error: | |
9718 | c_parser_skip_to_end_of_block_or_statement (parser); | |
20906c66 JJ |
9719 | if (structured_block) |
9720 | { | |
9721 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9722 | c_parser_consume_token (parser); | |
9723 | else if (code == OMP_ATOMIC_CAPTURE_NEW) | |
9724 | { | |
9725 | c_parser_skip_to_end_of_block_or_statement (parser); | |
9726 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9727 | c_parser_consume_token (parser); | |
9728 | } | |
9729 | } | |
953ff289 DN |
9730 | return; |
9731 | ||
953ff289 | 9732 | case POSTINCREMENT_EXPR: |
20906c66 JJ |
9733 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) |
9734 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9735 | /* FALLTHROUGH */ | |
9736 | case PREINCREMENT_EXPR: | |
953ff289 | 9737 | lhs = TREE_OPERAND (lhs, 0); |
20906c66 | 9738 | opcode = PLUS_EXPR; |
953ff289 DN |
9739 | rhs = integer_one_node; |
9740 | break; | |
9741 | ||
953ff289 | 9742 | case POSTDECREMENT_EXPR: |
20906c66 JJ |
9743 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) |
9744 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9745 | /* FALLTHROUGH */ | |
9746 | case PREDECREMENT_EXPR: | |
953ff289 | 9747 | lhs = TREE_OPERAND (lhs, 0); |
20906c66 | 9748 | opcode = MINUS_EXPR; |
953ff289 DN |
9749 | rhs = integer_one_node; |
9750 | break; | |
9751 | ||
f2b11865 JJ |
9752 | case COMPOUND_EXPR: |
9753 | if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR | |
9754 | && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR | |
9755 | && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR | |
9756 | && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0) | |
9757 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND | |
9758 | (TREE_OPERAND (lhs, 1), 0), 0))) | |
9759 | == BOOLEAN_TYPE) | |
9760 | /* Undo effects of boolean_increment for post {in,de}crement. */ | |
9761 | lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0); | |
9762 | /* FALLTHRU */ | |
9763 | case MODIFY_EXPR: | |
9764 | if (TREE_CODE (lhs) == MODIFY_EXPR | |
9765 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE) | |
9766 | { | |
9767 | /* Undo effects of boolean_increment. */ | |
9768 | if (integer_onep (TREE_OPERAND (lhs, 1))) | |
9769 | { | |
9770 | /* This is pre or post increment. */ | |
9771 | rhs = TREE_OPERAND (lhs, 1); | |
9772 | lhs = TREE_OPERAND (lhs, 0); | |
20906c66 JJ |
9773 | opcode = NOP_EXPR; |
9774 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
9775 | && !structured_block | |
9776 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
9777 | code = OMP_ATOMIC_CAPTURE_OLD; | |
f2b11865 JJ |
9778 | break; |
9779 | } | |
9780 | if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR | |
9781 | && TREE_OPERAND (lhs, 0) | |
9782 | == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) | |
9783 | { | |
9784 | /* This is pre or post decrement. */ | |
9785 | rhs = TREE_OPERAND (lhs, 1); | |
9786 | lhs = TREE_OPERAND (lhs, 0); | |
20906c66 JJ |
9787 | opcode = NOP_EXPR; |
9788 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
9789 | && !structured_block | |
9790 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
9791 | code = OMP_ATOMIC_CAPTURE_OLD; | |
f2b11865 JJ |
9792 | break; |
9793 | } | |
9794 | } | |
9795 | /* FALLTHRU */ | |
953ff289 DN |
9796 | default: |
9797 | switch (c_parser_peek_token (parser)->type) | |
9798 | { | |
9799 | case CPP_MULT_EQ: | |
20906c66 | 9800 | opcode = MULT_EXPR; |
953ff289 DN |
9801 | break; |
9802 | case CPP_DIV_EQ: | |
20906c66 | 9803 | opcode = TRUNC_DIV_EXPR; |
953ff289 DN |
9804 | break; |
9805 | case CPP_PLUS_EQ: | |
20906c66 | 9806 | opcode = PLUS_EXPR; |
953ff289 DN |
9807 | break; |
9808 | case CPP_MINUS_EQ: | |
20906c66 | 9809 | opcode = MINUS_EXPR; |
953ff289 DN |
9810 | break; |
9811 | case CPP_LSHIFT_EQ: | |
20906c66 | 9812 | opcode = LSHIFT_EXPR; |
953ff289 DN |
9813 | break; |
9814 | case CPP_RSHIFT_EQ: | |
20906c66 | 9815 | opcode = RSHIFT_EXPR; |
953ff289 DN |
9816 | break; |
9817 | case CPP_AND_EQ: | |
20906c66 | 9818 | opcode = BIT_AND_EXPR; |
953ff289 DN |
9819 | break; |
9820 | case CPP_OR_EQ: | |
20906c66 | 9821 | opcode = BIT_IOR_EXPR; |
953ff289 DN |
9822 | break; |
9823 | case CPP_XOR_EQ: | |
20906c66 | 9824 | opcode = BIT_XOR_EXPR; |
953ff289 | 9825 | break; |
20906c66 JJ |
9826 | case CPP_EQ: |
9827 | if (structured_block || code == OMP_ATOMIC) | |
9828 | { | |
9829 | location_t aloc = c_parser_peek_token (parser)->location; | |
9830 | location_t rhs_loc; | |
9831 | enum c_parser_prec oprec = PREC_NONE; | |
9832 | ||
9833 | c_parser_consume_token (parser); | |
9834 | rhs1 = c_parser_unary_expression (parser).value; | |
9835 | rhs1 = c_fully_fold (rhs1, false, NULL); | |
9836 | if (rhs1 == error_mark_node) | |
9837 | goto saw_error; | |
9838 | switch (c_parser_peek_token (parser)->type) | |
9839 | { | |
9840 | case CPP_SEMICOLON: | |
9841 | if (code == OMP_ATOMIC_CAPTURE_NEW) | |
9842 | { | |
9843 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9844 | v = lhs; | |
9845 | lhs = NULL_TREE; | |
9846 | lhs1 = rhs1; | |
9847 | rhs1 = NULL_TREE; | |
9848 | c_parser_consume_token (parser); | |
9849 | goto restart; | |
9850 | } | |
9851 | c_parser_error (parser, | |
9852 | "invalid form of %<#pragma omp atomic%>"); | |
9853 | goto saw_error; | |
9854 | case CPP_MULT: | |
9855 | opcode = MULT_EXPR; | |
9856 | oprec = PREC_MULT; | |
9857 | break; | |
9858 | case CPP_DIV: | |
9859 | opcode = TRUNC_DIV_EXPR; | |
9860 | oprec = PREC_MULT; | |
9861 | break; | |
9862 | case CPP_PLUS: | |
9863 | opcode = PLUS_EXPR; | |
9864 | oprec = PREC_ADD; | |
9865 | break; | |
9866 | case CPP_MINUS: | |
9867 | opcode = MINUS_EXPR; | |
9868 | oprec = PREC_ADD; | |
9869 | break; | |
9870 | case CPP_LSHIFT: | |
9871 | opcode = LSHIFT_EXPR; | |
9872 | oprec = PREC_SHIFT; | |
9873 | break; | |
9874 | case CPP_RSHIFT: | |
9875 | opcode = RSHIFT_EXPR; | |
9876 | oprec = PREC_SHIFT; | |
9877 | break; | |
9878 | case CPP_AND: | |
9879 | opcode = BIT_AND_EXPR; | |
9880 | oprec = PREC_BITAND; | |
9881 | break; | |
9882 | case CPP_OR: | |
9883 | opcode = BIT_IOR_EXPR; | |
9884 | oprec = PREC_BITOR; | |
9885 | break; | |
9886 | case CPP_XOR: | |
9887 | opcode = BIT_XOR_EXPR; | |
9888 | oprec = PREC_BITXOR; | |
9889 | break; | |
9890 | default: | |
9891 | c_parser_error (parser, | |
9892 | "invalid operator for %<#pragma omp atomic%>"); | |
9893 | goto saw_error; | |
9894 | } | |
9895 | loc = aloc; | |
9896 | c_parser_consume_token (parser); | |
9897 | rhs_loc = c_parser_peek_token (parser)->location; | |
9898 | if (commutative_tree_code (opcode)) | |
9899 | oprec = (enum c_parser_prec) (oprec - 1); | |
9900 | rhs_expr = c_parser_binary_expression (parser, NULL, oprec); | |
9901 | rhs_expr = default_function_array_read_conversion (rhs_loc, | |
9902 | rhs_expr); | |
9903 | rhs = rhs_expr.value; | |
9904 | rhs = c_fully_fold (rhs, false, NULL); | |
9905 | goto stmt_done; | |
9906 | } | |
9907 | /* FALLTHROUGH */ | |
953ff289 DN |
9908 | default: |
9909 | c_parser_error (parser, | |
9910 | "invalid operator for %<#pragma omp atomic%>"); | |
9911 | goto saw_error; | |
9912 | } | |
9913 | ||
7bd11157 TT |
9914 | /* Arrange to pass the location of the assignment operator to |
9915 | c_finish_omp_atomic. */ | |
9916 | loc = c_parser_peek_token (parser)->location; | |
953ff289 | 9917 | c_parser_consume_token (parser); |
c2255bc4 AH |
9918 | { |
9919 | location_t rhs_loc = c_parser_peek_token (parser)->location; | |
9920 | rhs_expr = c_parser_expression (parser); | |
ebfbbdc5 | 9921 | rhs_expr = default_function_array_read_conversion (rhs_loc, rhs_expr); |
c2255bc4 | 9922 | } |
79addd1f | 9923 | rhs = rhs_expr.value; |
928c19bb | 9924 | rhs = c_fully_fold (rhs, false, NULL); |
953ff289 DN |
9925 | break; |
9926 | } | |
20906c66 JJ |
9927 | stmt_done: |
9928 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
9929 | { | |
9930 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
9931 | goto saw_error; | |
9932 | v = c_parser_unary_expression (parser).value; | |
9933 | v = c_fully_fold (v, false, NULL); | |
9934 | if (v == error_mark_node) | |
9935 | goto saw_error; | |
9936 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9937 | goto saw_error; | |
9938 | lhs1 = c_parser_unary_expression (parser).value; | |
9939 | lhs1 = c_fully_fold (lhs1, false, NULL); | |
9940 | if (lhs1 == error_mark_node) | |
9941 | goto saw_error; | |
9942 | } | |
9943 | if (structured_block) | |
9944 | { | |
9945 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9946 | c_parser_require (parser, CPP_CLOSE_BRACE, "expected %<}%>"); | |
9947 | } | |
9948 | done: | |
9949 | stmt = c_finish_omp_atomic (loc, code, opcode, lhs, rhs, v, lhs1, rhs1); | |
fe89d797 MM |
9950 | if (stmt != error_mark_node) |
9951 | add_stmt (stmt); | |
20906c66 JJ |
9952 | |
9953 | if (!structured_block) | |
9954 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
953ff289 DN |
9955 | } |
9956 | ||
9957 | ||
9958 | /* OpenMP 2.5: | |
9959 | # pragma omp barrier new-line | |
9960 | */ | |
9961 | ||
9962 | static void | |
9963 | c_parser_omp_barrier (c_parser *parser) | |
9964 | { | |
c2255bc4 | 9965 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9966 | c_parser_consume_pragma (parser); |
9967 | c_parser_skip_to_pragma_eol (parser); | |
9968 | ||
c2255bc4 | 9969 | c_finish_omp_barrier (loc); |
953ff289 DN |
9970 | } |
9971 | ||
9972 | /* OpenMP 2.5: | |
9973 | # pragma omp critical [(name)] new-line | |
9974 | structured-block | |
c2255bc4 AH |
9975 | |
9976 | LOC is the location of the #pragma itself. */ | |
953ff289 DN |
9977 | |
9978 | static tree | |
c2255bc4 | 9979 | c_parser_omp_critical (location_t loc, c_parser *parser) |
953ff289 DN |
9980 | { |
9981 | tree stmt, name = NULL; | |
9982 | ||
9983 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
9984 | { | |
9985 | c_parser_consume_token (parser); | |
9986 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9987 | { | |
9988 | name = c_parser_peek_token (parser)->value; | |
9989 | c_parser_consume_token (parser); | |
9990 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9991 | } | |
9992 | else | |
9993 | c_parser_error (parser, "expected identifier"); | |
9994 | } | |
9995 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
9996 | c_parser_error (parser, "expected %<(%> or end of line"); | |
9997 | c_parser_skip_to_pragma_eol (parser); | |
9998 | ||
9999 | stmt = c_parser_omp_structured_block (parser); | |
c2255bc4 | 10000 | return c_finish_omp_critical (loc, stmt, name); |
953ff289 DN |
10001 | } |
10002 | ||
10003 | /* OpenMP 2.5: | |
10004 | # pragma omp flush flush-vars[opt] new-line | |
10005 | ||
10006 | flush-vars: | |
10007 | ( variable-list ) */ | |
10008 | ||
10009 | static void | |
10010 | c_parser_omp_flush (c_parser *parser) | |
10011 | { | |
c2255bc4 | 10012 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10013 | c_parser_consume_pragma (parser); |
10014 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
d75d71e0 | 10015 | c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 DN |
10016 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) |
10017 | c_parser_error (parser, "expected %<(%> or end of line"); | |
10018 | c_parser_skip_to_pragma_eol (parser); | |
10019 | ||
c2255bc4 | 10020 | c_finish_omp_flush (loc); |
953ff289 DN |
10021 | } |
10022 | ||
fa10beec | 10023 | /* Parse the restricted form of the for statement allowed by OpenMP. |
953ff289 | 10024 | The real trick here is to determine the loop control variable early |
c2255bc4 AH |
10025 | so that we can push a new decl if necessary to make it private. |
10026 | LOC is the location of the OMP in "#pragma omp". */ | |
953ff289 DN |
10027 | |
10028 | static tree | |
c2255bc4 AH |
10029 | c_parser_omp_for_loop (location_t loc, |
10030 | c_parser *parser, tree clauses, tree *par_clauses) | |
953ff289 | 10031 | { |
a68ab351 | 10032 | tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl; |
1d468b06 | 10033 | tree declv, condv, incrv, initv, ret = NULL; |
a68ab351 JJ |
10034 | bool fail = false, open_brace_parsed = false; |
10035 | int i, collapse = 1, nbraces = 0; | |
c2255bc4 | 10036 | location_t for_loc; |
9771b263 | 10037 | vec<tree, va_gc> *for_block = make_tree_vector (); |
a68ab351 JJ |
10038 | |
10039 | for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl)) | |
10040 | if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE) | |
10041 | collapse = tree_low_cst (OMP_CLAUSE_COLLAPSE_EXPR (cl), 0); | |
10042 | ||
10043 | gcc_assert (collapse >= 1); | |
10044 | ||
10045 | declv = make_tree_vec (collapse); | |
10046 | initv = make_tree_vec (collapse); | |
10047 | condv = make_tree_vec (collapse); | |
10048 | incrv = make_tree_vec (collapse); | |
953ff289 DN |
10049 | |
10050 | if (!c_parser_next_token_is_keyword (parser, RID_FOR)) | |
10051 | { | |
10052 | c_parser_error (parser, "for statement expected"); | |
10053 | return NULL; | |
10054 | } | |
c2255bc4 | 10055 | for_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10056 | c_parser_consume_token (parser); |
10057 | ||
a68ab351 | 10058 | for (i = 0; i < collapse; i++) |
953ff289 | 10059 | { |
a68ab351 | 10060 | int bracecount = 0; |
953ff289 | 10061 | |
a68ab351 JJ |
10062 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10063 | goto pop_scopes; | |
953ff289 | 10064 | |
a68ab351 | 10065 | /* Parse the initialization declaration or expression. */ |
2f413185 | 10066 | if (c_parser_next_tokens_start_declaration (parser)) |
a68ab351 JJ |
10067 | { |
10068 | if (i > 0) | |
9771b263 | 10069 | vec_safe_push (for_block, c_begin_compound_stmt (true)); |
f05b9d93 NP |
10070 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
10071 | decl = check_for_loop_decls (for_loc, flag_isoc99); | |
a68ab351 JJ |
10072 | if (decl == NULL) |
10073 | goto error_init; | |
10074 | if (DECL_INITIAL (decl) == error_mark_node) | |
10075 | decl = error_mark_node; | |
10076 | init = decl; | |
10077 | } | |
10078 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
10079 | && c_parser_peek_2nd_token (parser)->type == CPP_EQ) | |
10080 | { | |
32e8bb8e | 10081 | struct c_expr decl_exp; |
a68ab351 | 10082 | struct c_expr init_exp; |
c9f9eb5d | 10083 | location_t init_loc; |
a68ab351 | 10084 | |
32e8bb8e ILT |
10085 | decl_exp = c_parser_postfix_expression (parser); |
10086 | decl = decl_exp.value; | |
a68ab351 JJ |
10087 | |
10088 | c_parser_require (parser, CPP_EQ, "expected %<=%>"); | |
10089 | ||
c2255bc4 | 10090 | init_loc = c_parser_peek_token (parser)->location; |
a68ab351 | 10091 | init_exp = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
10092 | init_exp = default_function_array_read_conversion (init_loc, |
10093 | init_exp); | |
32e8bb8e | 10094 | init = build_modify_expr (init_loc, decl, decl_exp.original_type, |
c2255bc4 | 10095 | NOP_EXPR, init_loc, init_exp.value, |
bbbbb16a | 10096 | init_exp.original_type); |
c2255bc4 | 10097 | init = c_process_expr_stmt (init_loc, init); |
953ff289 | 10098 | |
a68ab351 JJ |
10099 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
10100 | } | |
10101 | else | |
10102 | { | |
10103 | error_init: | |
10104 | c_parser_error (parser, | |
10105 | "expected iteration declaration or initialization"); | |
10106 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10107 | "expected %<)%>"); | |
10108 | fail = true; | |
10109 | goto parse_next; | |
10110 | } | |
10111 | ||
10112 | /* Parse the loop condition. */ | |
10113 | cond = NULL_TREE; | |
10114 | if (c_parser_next_token_is_not (parser, CPP_SEMICOLON)) | |
10115 | { | |
3ba09659 | 10116 | location_t cond_loc = c_parser_peek_token (parser)->location; |
20906c66 JJ |
10117 | struct c_expr cond_expr = c_parser_binary_expression (parser, NULL, |
10118 | PREC_NONE); | |
3ba09659 | 10119 | |
c5cdb03f | 10120 | cond = cond_expr.value; |
3ba09659 | 10121 | cond = c_objc_common_truthvalue_conversion (cond_loc, cond); |
928c19bb | 10122 | cond = c_fully_fold (cond, false, NULL); |
c5cdb03f JJ |
10123 | switch (cond_expr.original_code) |
10124 | { | |
10125 | case GT_EXPR: | |
10126 | case GE_EXPR: | |
10127 | case LT_EXPR: | |
10128 | case LE_EXPR: | |
10129 | break; | |
10130 | default: | |
10131 | /* Can't be cond = error_mark_node, because we want to preserve | |
10132 | the location until c_finish_omp_for. */ | |
10133 | cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node); | |
10134 | break; | |
10135 | } | |
c9f9eb5d | 10136 | protected_set_expr_location (cond, cond_loc); |
a68ab351 | 10137 | } |
953ff289 | 10138 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
953ff289 | 10139 | |
a68ab351 JJ |
10140 | /* Parse the increment expression. */ |
10141 | incr = NULL_TREE; | |
10142 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN)) | |
c9f9eb5d AH |
10143 | { |
10144 | location_t incr_loc = c_parser_peek_token (parser)->location; | |
10145 | ||
c2255bc4 AH |
10146 | incr = c_process_expr_stmt (incr_loc, |
10147 | c_parser_expression (parser).value); | |
c9f9eb5d | 10148 | } |
a68ab351 | 10149 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
953ff289 | 10150 | |
a68ab351 JJ |
10151 | if (decl == NULL || decl == error_mark_node || init == error_mark_node) |
10152 | fail = true; | |
10153 | else | |
10154 | { | |
10155 | TREE_VEC_ELT (declv, i) = decl; | |
10156 | TREE_VEC_ELT (initv, i) = init; | |
10157 | TREE_VEC_ELT (condv, i) = cond; | |
10158 | TREE_VEC_ELT (incrv, i) = incr; | |
10159 | } | |
10160 | ||
10161 | parse_next: | |
10162 | if (i == collapse - 1) | |
10163 | break; | |
10164 | ||
10165 | /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed | |
10166 | in between the collapsed for loops to be still considered perfectly | |
10167 | nested. Hopefully the final version clarifies this. | |
10168 | For now handle (multiple) {'s and empty statements. */ | |
10169 | do | |
10170 | { | |
10171 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
10172 | { | |
10173 | c_parser_consume_token (parser); | |
10174 | break; | |
10175 | } | |
10176 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
10177 | { | |
10178 | c_parser_consume_token (parser); | |
10179 | bracecount++; | |
10180 | } | |
10181 | else if (bracecount | |
10182 | && c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
10183 | c_parser_consume_token (parser); | |
10184 | else | |
10185 | { | |
10186 | c_parser_error (parser, "not enough perfectly nested loops"); | |
10187 | if (bracecount) | |
10188 | { | |
10189 | open_brace_parsed = true; | |
10190 | bracecount--; | |
10191 | } | |
10192 | fail = true; | |
10193 | collapse = 0; | |
10194 | break; | |
10195 | } | |
10196 | } | |
10197 | while (1); | |
10198 | ||
10199 | nbraces += bracecount; | |
10200 | } | |
953ff289 | 10201 | |
953ff289 DN |
10202 | save_break = c_break_label; |
10203 | c_break_label = size_one_node; | |
10204 | save_cont = c_cont_label; | |
10205 | c_cont_label = NULL_TREE; | |
10206 | body = push_stmt_list (); | |
10207 | ||
a68ab351 JJ |
10208 | if (open_brace_parsed) |
10209 | { | |
c2255bc4 | 10210 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
10211 | stmt = c_begin_compound_stmt (true); |
10212 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 10213 | add_stmt (c_end_compound_stmt (here, stmt, true)); |
a68ab351 JJ |
10214 | } |
10215 | else | |
10216 | add_stmt (c_parser_c99_block_statement (parser)); | |
953ff289 | 10217 | if (c_cont_label) |
c2255bc4 AH |
10218 | { |
10219 | tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label); | |
10220 | SET_EXPR_LOCATION (t, loc); | |
10221 | add_stmt (t); | |
10222 | } | |
953ff289 DN |
10223 | |
10224 | body = pop_stmt_list (body); | |
10225 | c_break_label = save_break; | |
10226 | c_cont_label = save_cont; | |
10227 | ||
a68ab351 JJ |
10228 | while (nbraces) |
10229 | { | |
10230 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
10231 | { | |
10232 | c_parser_consume_token (parser); | |
10233 | nbraces--; | |
10234 | } | |
10235 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
10236 | c_parser_consume_token (parser); | |
10237 | else | |
10238 | { | |
10239 | c_parser_error (parser, "collapsed loops not perfectly nested"); | |
10240 | while (nbraces) | |
10241 | { | |
c2255bc4 | 10242 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
10243 | stmt = c_begin_compound_stmt (true); |
10244 | add_stmt (body); | |
10245 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 10246 | body = c_end_compound_stmt (here, stmt, true); |
a68ab351 JJ |
10247 | nbraces--; |
10248 | } | |
10249 | goto pop_scopes; | |
10250 | } | |
10251 | } | |
10252 | ||
61c3a446 | 10253 | /* Only bother calling c_finish_omp_for if we haven't already generated |
953ff289 | 10254 | an error from the initialization parsing. */ |
a68ab351 JJ |
10255 | if (!fail) |
10256 | { | |
10257 | stmt = c_finish_omp_for (loc, declv, initv, condv, incrv, body, NULL); | |
10258 | if (stmt) | |
10259 | { | |
10260 | if (par_clauses != NULL) | |
10261 | { | |
10262 | tree *c; | |
10263 | for (c = par_clauses; *c ; ) | |
10264 | if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE | |
10265 | && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE) | |
10266 | c = &OMP_CLAUSE_CHAIN (*c); | |
10267 | else | |
10268 | { | |
10269 | for (i = 0; i < collapse; i++) | |
10270 | if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c)) | |
10271 | break; | |
10272 | if (i == collapse) | |
10273 | c = &OMP_CLAUSE_CHAIN (*c); | |
10274 | else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE) | |
10275 | { | |
3ba09659 AH |
10276 | error_at (loc, |
10277 | "iteration variable %qD should not be firstprivate", | |
10278 | OMP_CLAUSE_DECL (*c)); | |
a68ab351 JJ |
10279 | *c = OMP_CLAUSE_CHAIN (*c); |
10280 | } | |
10281 | else | |
10282 | { | |
10283 | /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES, | |
10284 | change it to shared (decl) in | |
10285 | OMP_PARALLEL_CLAUSES. */ | |
c2255bc4 AH |
10286 | tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c), |
10287 | OMP_CLAUSE_LASTPRIVATE); | |
a68ab351 JJ |
10288 | OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c); |
10289 | OMP_CLAUSE_CHAIN (l) = clauses; | |
10290 | clauses = l; | |
10291 | OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED); | |
10292 | } | |
10293 | } | |
10294 | } | |
10295 | OMP_FOR_CLAUSES (stmt) = clauses; | |
10296 | } | |
10297 | ret = stmt; | |
10298 | } | |
10299 | pop_scopes: | |
9771b263 | 10300 | while (!for_block->is_empty ()) |
a68ab351 | 10301 | { |
c2255bc4 AH |
10302 | /* FIXME diagnostics: LOC below should be the actual location of |
10303 | this particular for block. We need to build a list of | |
10304 | locations to go along with FOR_BLOCK. */ | |
9771b263 | 10305 | stmt = c_end_compound_stmt (loc, for_block->pop (), true); |
a68ab351 | 10306 | add_stmt (stmt); |
a68ab351 | 10307 | } |
1d468b06 | 10308 | release_tree_vector (for_block); |
a68ab351 | 10309 | return ret; |
953ff289 DN |
10310 | } |
10311 | ||
10312 | /* OpenMP 2.5: | |
10313 | #pragma omp for for-clause[optseq] new-line | |
10314 | for-loop | |
c2255bc4 AH |
10315 | |
10316 | LOC is the location of the #pragma token. | |
953ff289 DN |
10317 | */ |
10318 | ||
10319 | #define OMP_FOR_CLAUSE_MASK \ | |
10320 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10321 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10322 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
10323 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10324 | | (1u << PRAGMA_OMP_CLAUSE_ORDERED) \ | |
10325 | | (1u << PRAGMA_OMP_CLAUSE_SCHEDULE) \ | |
a68ab351 | 10326 | | (1u << PRAGMA_OMP_CLAUSE_COLLAPSE) \ |
953ff289 DN |
10327 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) |
10328 | ||
10329 | static tree | |
c2255bc4 | 10330 | c_parser_omp_for (location_t loc, c_parser *parser) |
953ff289 DN |
10331 | { |
10332 | tree block, clauses, ret; | |
10333 | ||
10334 | clauses = c_parser_omp_all_clauses (parser, OMP_FOR_CLAUSE_MASK, | |
10335 | "#pragma omp for"); | |
10336 | ||
10337 | block = c_begin_compound_stmt (true); | |
c2255bc4 AH |
10338 | ret = c_parser_omp_for_loop (loc, parser, clauses, NULL); |
10339 | block = c_end_compound_stmt (loc, block, true); | |
953ff289 DN |
10340 | add_stmt (block); |
10341 | ||
10342 | return ret; | |
10343 | } | |
10344 | ||
10345 | /* OpenMP 2.5: | |
10346 | # pragma omp master new-line | |
10347 | structured-block | |
c2255bc4 AH |
10348 | |
10349 | LOC is the location of the #pragma token. | |
953ff289 DN |
10350 | */ |
10351 | ||
10352 | static tree | |
c2255bc4 | 10353 | c_parser_omp_master (location_t loc, c_parser *parser) |
953ff289 DN |
10354 | { |
10355 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 10356 | return c_finish_omp_master (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
10357 | } |
10358 | ||
10359 | /* OpenMP 2.5: | |
10360 | # pragma omp ordered new-line | |
10361 | structured-block | |
c2255bc4 AH |
10362 | |
10363 | LOC is the location of the #pragma itself. | |
953ff289 DN |
10364 | */ |
10365 | ||
10366 | static tree | |
c2255bc4 | 10367 | c_parser_omp_ordered (location_t loc, c_parser *parser) |
953ff289 DN |
10368 | { |
10369 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 10370 | return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
10371 | } |
10372 | ||
10373 | /* OpenMP 2.5: | |
10374 | ||
10375 | section-scope: | |
10376 | { section-sequence } | |
10377 | ||
10378 | section-sequence: | |
10379 | section-directive[opt] structured-block | |
b8698a0f | 10380 | section-sequence section-directive structured-block |
c2255bc4 AH |
10381 | |
10382 | SECTIONS_LOC is the location of the #pragma omp sections. */ | |
953ff289 DN |
10383 | |
10384 | static tree | |
c2255bc4 | 10385 | c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser) |
953ff289 DN |
10386 | { |
10387 | tree stmt, substmt; | |
10388 | bool error_suppress = false; | |
10389 | location_t loc; | |
10390 | ||
c2255bc4 | 10391 | loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10392 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
10393 | { | |
10394 | /* Avoid skipping until the end of the block. */ | |
10395 | parser->error = false; | |
10396 | return NULL_TREE; | |
10397 | } | |
10398 | ||
10399 | stmt = push_stmt_list (); | |
10400 | ||
953ff289 DN |
10401 | if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION) |
10402 | { | |
10403 | substmt = push_stmt_list (); | |
10404 | ||
10405 | while (1) | |
10406 | { | |
10407 | c_parser_statement (parser); | |
10408 | ||
10409 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
10410 | break; | |
10411 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
10412 | break; | |
10413 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
10414 | break; | |
10415 | } | |
10416 | ||
10417 | substmt = pop_stmt_list (substmt); | |
10418 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
10419 | SET_EXPR_LOCATION (substmt, loc); | |
10420 | add_stmt (substmt); | |
10421 | } | |
10422 | ||
10423 | while (1) | |
10424 | { | |
10425 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
10426 | break; | |
10427 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
10428 | break; | |
10429 | ||
10430 | loc = c_parser_peek_token (parser)->location; | |
10431 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
10432 | { | |
10433 | c_parser_consume_pragma (parser); | |
10434 | c_parser_skip_to_pragma_eol (parser); | |
10435 | error_suppress = false; | |
10436 | } | |
10437 | else if (!error_suppress) | |
10438 | { | |
3ba09659 | 10439 | error_at (loc, "expected %<#pragma omp section%> or %<}%>"); |
953ff289 DN |
10440 | error_suppress = true; |
10441 | } | |
10442 | ||
10443 | substmt = c_parser_omp_structured_block (parser); | |
10444 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
10445 | SET_EXPR_LOCATION (substmt, loc); | |
10446 | add_stmt (substmt); | |
10447 | } | |
10448 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, | |
10449 | "expected %<#pragma omp section%> or %<}%>"); | |
10450 | ||
10451 | substmt = pop_stmt_list (stmt); | |
10452 | ||
10453 | stmt = make_node (OMP_SECTIONS); | |
c2255bc4 | 10454 | SET_EXPR_LOCATION (stmt, sections_loc); |
953ff289 DN |
10455 | TREE_TYPE (stmt) = void_type_node; |
10456 | OMP_SECTIONS_BODY (stmt) = substmt; | |
10457 | ||
10458 | return add_stmt (stmt); | |
10459 | } | |
10460 | ||
10461 | /* OpenMP 2.5: | |
10462 | # pragma omp sections sections-clause[optseq] newline | |
10463 | sections-scope | |
c2255bc4 AH |
10464 | |
10465 | LOC is the location of the #pragma token. | |
953ff289 DN |
10466 | */ |
10467 | ||
10468 | #define OMP_SECTIONS_CLAUSE_MASK \ | |
10469 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10470 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10471 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
10472 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10473 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
10474 | ||
10475 | static tree | |
c2255bc4 | 10476 | c_parser_omp_sections (location_t loc, c_parser *parser) |
953ff289 DN |
10477 | { |
10478 | tree block, clauses, ret; | |
10479 | ||
10480 | clauses = c_parser_omp_all_clauses (parser, OMP_SECTIONS_CLAUSE_MASK, | |
10481 | "#pragma omp sections"); | |
10482 | ||
10483 | block = c_begin_compound_stmt (true); | |
c2255bc4 | 10484 | ret = c_parser_omp_sections_scope (loc, parser); |
953ff289 DN |
10485 | if (ret) |
10486 | OMP_SECTIONS_CLAUSES (ret) = clauses; | |
c2255bc4 | 10487 | block = c_end_compound_stmt (loc, block, true); |
953ff289 DN |
10488 | add_stmt (block); |
10489 | ||
10490 | return ret; | |
10491 | } | |
10492 | ||
10493 | /* OpenMP 2.5: | |
10494 | # pragma parallel parallel-clause new-line | |
10495 | # pragma parallel for parallel-for-clause new-line | |
10496 | # pragma parallel sections parallel-sections-clause new-line | |
c2255bc4 AH |
10497 | |
10498 | LOC is the location of the #pragma token. | |
953ff289 DN |
10499 | */ |
10500 | ||
10501 | #define OMP_PARALLEL_CLAUSE_MASK \ | |
10502 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
10503 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10504 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10505 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
10506 | | (1u << PRAGMA_OMP_CLAUSE_SHARED) \ | |
10507 | | (1u << PRAGMA_OMP_CLAUSE_COPYIN) \ | |
10508 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10509 | | (1u << PRAGMA_OMP_CLAUSE_NUM_THREADS)) | |
10510 | ||
10511 | static tree | |
c2255bc4 | 10512 | c_parser_omp_parallel (location_t loc, c_parser *parser) |
953ff289 DN |
10513 | { |
10514 | enum pragma_kind p_kind = PRAGMA_OMP_PARALLEL; | |
10515 | const char *p_name = "#pragma omp parallel"; | |
10516 | tree stmt, clauses, par_clause, ws_clause, block; | |
10517 | unsigned int mask = OMP_PARALLEL_CLAUSE_MASK; | |
10518 | ||
10519 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
10520 | { | |
10521 | c_parser_consume_token (parser); | |
10522 | p_kind = PRAGMA_OMP_PARALLEL_FOR; | |
10523 | p_name = "#pragma omp parallel for"; | |
10524 | mask |= OMP_FOR_CLAUSE_MASK; | |
10525 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
10526 | } | |
10527 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
10528 | { | |
10529 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10530 | if (strcmp (p, "sections") == 0) | |
10531 | { | |
10532 | c_parser_consume_token (parser); | |
10533 | p_kind = PRAGMA_OMP_PARALLEL_SECTIONS; | |
10534 | p_name = "#pragma omp parallel sections"; | |
10535 | mask |= OMP_SECTIONS_CLAUSE_MASK; | |
10536 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
10537 | } | |
10538 | } | |
10539 | ||
10540 | clauses = c_parser_omp_all_clauses (parser, mask, p_name); | |
10541 | ||
10542 | switch (p_kind) | |
10543 | { | |
10544 | case PRAGMA_OMP_PARALLEL: | |
10545 | block = c_begin_omp_parallel (); | |
10546 | c_parser_statement (parser); | |
c2255bc4 | 10547 | stmt = c_finish_omp_parallel (loc, clauses, block); |
953ff289 DN |
10548 | break; |
10549 | ||
10550 | case PRAGMA_OMP_PARALLEL_FOR: | |
10551 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
10552 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
10553 | c_parser_omp_for_loop (loc, parser, ws_clause, &par_clause); | |
10554 | stmt = c_finish_omp_parallel (loc, par_clause, block); | |
761041be | 10555 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
10556 | break; |
10557 | ||
10558 | case PRAGMA_OMP_PARALLEL_SECTIONS: | |
10559 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
10560 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
10561 | stmt = c_parser_omp_sections_scope (loc, parser); | |
953ff289 DN |
10562 | if (stmt) |
10563 | OMP_SECTIONS_CLAUSES (stmt) = ws_clause; | |
c2255bc4 | 10564 | stmt = c_finish_omp_parallel (loc, par_clause, block); |
761041be | 10565 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
10566 | break; |
10567 | ||
10568 | default: | |
10569 | gcc_unreachable (); | |
10570 | } | |
10571 | ||
10572 | return stmt; | |
10573 | } | |
10574 | ||
10575 | /* OpenMP 2.5: | |
10576 | # pragma omp single single-clause[optseq] new-line | |
10577 | structured-block | |
c2255bc4 AH |
10578 | |
10579 | LOC is the location of the #pragma. | |
953ff289 DN |
10580 | */ |
10581 | ||
10582 | #define OMP_SINGLE_CLAUSE_MASK \ | |
10583 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10584 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10585 | | (1u << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \ | |
10586 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
10587 | ||
10588 | static tree | |
c2255bc4 | 10589 | c_parser_omp_single (location_t loc, c_parser *parser) |
953ff289 DN |
10590 | { |
10591 | tree stmt = make_node (OMP_SINGLE); | |
c2255bc4 | 10592 | SET_EXPR_LOCATION (stmt, loc); |
953ff289 DN |
10593 | TREE_TYPE (stmt) = void_type_node; |
10594 | ||
10595 | OMP_SINGLE_CLAUSES (stmt) | |
10596 | = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK, | |
10597 | "#pragma omp single"); | |
10598 | OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser); | |
10599 | ||
10600 | return add_stmt (stmt); | |
10601 | } | |
10602 | ||
a68ab351 JJ |
10603 | /* OpenMP 3.0: |
10604 | # pragma omp task task-clause[optseq] new-line | |
c2255bc4 AH |
10605 | |
10606 | LOC is the location of the #pragma. | |
a68ab351 JJ |
10607 | */ |
10608 | ||
10609 | #define OMP_TASK_CLAUSE_MASK \ | |
10610 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
10611 | | (1u << PRAGMA_OMP_CLAUSE_UNTIED) \ | |
10612 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
10613 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10614 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
20906c66 JJ |
10615 | | (1u << PRAGMA_OMP_CLAUSE_SHARED) \ |
10616 | | (1u << PRAGMA_OMP_CLAUSE_FINAL) \ | |
10617 | | (1u << PRAGMA_OMP_CLAUSE_MERGEABLE)) | |
a68ab351 JJ |
10618 | |
10619 | static tree | |
c2255bc4 | 10620 | c_parser_omp_task (location_t loc, c_parser *parser) |
a68ab351 JJ |
10621 | { |
10622 | tree clauses, block; | |
10623 | ||
10624 | clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK, | |
10625 | "#pragma omp task"); | |
10626 | ||
10627 | block = c_begin_omp_task (); | |
10628 | c_parser_statement (parser); | |
c2255bc4 | 10629 | return c_finish_omp_task (loc, clauses, block); |
a68ab351 JJ |
10630 | } |
10631 | ||
10632 | /* OpenMP 3.0: | |
10633 | # pragma omp taskwait new-line | |
10634 | */ | |
10635 | ||
10636 | static void | |
10637 | c_parser_omp_taskwait (c_parser *parser) | |
10638 | { | |
c2255bc4 | 10639 | location_t loc = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
10640 | c_parser_consume_pragma (parser); |
10641 | c_parser_skip_to_pragma_eol (parser); | |
10642 | ||
c2255bc4 | 10643 | c_finish_omp_taskwait (loc); |
a68ab351 | 10644 | } |
953ff289 | 10645 | |
20906c66 JJ |
10646 | /* OpenMP 3.1: |
10647 | # pragma omp taskyield new-line | |
10648 | */ | |
10649 | ||
10650 | static void | |
10651 | c_parser_omp_taskyield (c_parser *parser) | |
10652 | { | |
10653 | location_t loc = c_parser_peek_token (parser)->location; | |
10654 | c_parser_consume_pragma (parser); | |
10655 | c_parser_skip_to_pragma_eol (parser); | |
10656 | ||
10657 | c_finish_omp_taskyield (loc); | |
10658 | } | |
10659 | ||
953ff289 DN |
10660 | /* Main entry point to parsing most OpenMP pragmas. */ |
10661 | ||
10662 | static void | |
10663 | c_parser_omp_construct (c_parser *parser) | |
10664 | { | |
10665 | enum pragma_kind p_kind; | |
10666 | location_t loc; | |
10667 | tree stmt; | |
10668 | ||
10669 | loc = c_parser_peek_token (parser)->location; | |
10670 | p_kind = c_parser_peek_token (parser)->pragma_kind; | |
10671 | c_parser_consume_pragma (parser); | |
10672 | ||
10673 | switch (p_kind) | |
10674 | { | |
10675 | case PRAGMA_OMP_ATOMIC: | |
c2255bc4 | 10676 | c_parser_omp_atomic (loc, parser); |
953ff289 DN |
10677 | return; |
10678 | case PRAGMA_OMP_CRITICAL: | |
c2255bc4 | 10679 | stmt = c_parser_omp_critical (loc, parser); |
953ff289 DN |
10680 | break; |
10681 | case PRAGMA_OMP_FOR: | |
c2255bc4 | 10682 | stmt = c_parser_omp_for (loc, parser); |
953ff289 DN |
10683 | break; |
10684 | case PRAGMA_OMP_MASTER: | |
c2255bc4 | 10685 | stmt = c_parser_omp_master (loc, parser); |
953ff289 DN |
10686 | break; |
10687 | case PRAGMA_OMP_ORDERED: | |
c2255bc4 | 10688 | stmt = c_parser_omp_ordered (loc, parser); |
953ff289 DN |
10689 | break; |
10690 | case PRAGMA_OMP_PARALLEL: | |
c2255bc4 | 10691 | stmt = c_parser_omp_parallel (loc, parser); |
953ff289 DN |
10692 | break; |
10693 | case PRAGMA_OMP_SECTIONS: | |
c2255bc4 | 10694 | stmt = c_parser_omp_sections (loc, parser); |
953ff289 DN |
10695 | break; |
10696 | case PRAGMA_OMP_SINGLE: | |
c2255bc4 | 10697 | stmt = c_parser_omp_single (loc, parser); |
953ff289 | 10698 | break; |
a68ab351 | 10699 | case PRAGMA_OMP_TASK: |
c2255bc4 | 10700 | stmt = c_parser_omp_task (loc, parser); |
a68ab351 | 10701 | break; |
953ff289 DN |
10702 | default: |
10703 | gcc_unreachable (); | |
10704 | } | |
10705 | ||
10706 | if (stmt) | |
c2255bc4 | 10707 | gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION); |
953ff289 DN |
10708 | } |
10709 | ||
10710 | ||
10711 | /* OpenMP 2.5: | |
10712 | # pragma omp threadprivate (variable-list) */ | |
10713 | ||
10714 | static void | |
10715 | c_parser_omp_threadprivate (c_parser *parser) | |
10716 | { | |
10717 | tree vars, t; | |
c2255bc4 | 10718 | location_t loc; |
953ff289 DN |
10719 | |
10720 | c_parser_consume_pragma (parser); | |
c2255bc4 | 10721 | loc = c_parser_peek_token (parser)->location; |
d75d71e0 | 10722 | vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 | 10723 | |
953ff289 DN |
10724 | /* Mark every variable in VARS to be assigned thread local storage. */ |
10725 | for (t = vars; t; t = TREE_CHAIN (t)) | |
10726 | { | |
10727 | tree v = TREE_PURPOSE (t); | |
10728 | ||
c2255bc4 AH |
10729 | /* FIXME diagnostics: Ideally we should keep individual |
10730 | locations for all the variables in the var list to make the | |
10731 | following errors more precise. Perhaps | |
10732 | c_parser_omp_var_list_parens() should construct a list of | |
10733 | locations to go along with the var list. */ | |
10734 | ||
953ff289 DN |
10735 | /* If V had already been marked threadprivate, it doesn't matter |
10736 | whether it had been used prior to this point. */ | |
5df27e4a | 10737 | if (TREE_CODE (v) != VAR_DECL) |
c2255bc4 | 10738 | error_at (loc, "%qD is not a variable", v); |
5df27e4a | 10739 | else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v)) |
c2255bc4 | 10740 | error_at (loc, "%qE declared %<threadprivate%> after first use", v); |
953ff289 | 10741 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) |
c2255bc4 | 10742 | error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v); |
5df27e4a JJ |
10743 | else if (TREE_TYPE (v) == error_mark_node) |
10744 | ; | |
953ff289 | 10745 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) |
c2255bc4 | 10746 | error_at (loc, "%<threadprivate%> %qE has incomplete type", v); |
953ff289 DN |
10747 | else |
10748 | { | |
10749 | if (! DECL_THREAD_LOCAL_P (v)) | |
10750 | { | |
10751 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
10752 | /* If rtl has been already set for this var, call | |
10753 | make_decl_rtl once again, so that encode_section_info | |
10754 | has a chance to look at the new decl flags. */ | |
10755 | if (DECL_RTL_SET_P (v)) | |
10756 | make_decl_rtl (v); | |
10757 | } | |
10758 | C_DECL_THREADPRIVATE_P (v) = 1; | |
10759 | } | |
10760 | } | |
10761 | ||
10762 | c_parser_skip_to_pragma_eol (parser); | |
10763 | } | |
10764 | ||
0a35513e AH |
10765 | /* Parse a transaction attribute (GCC Extension). |
10766 | ||
10767 | transaction-attribute: | |
10768 | attributes | |
10769 | [ [ any-word ] ] | |
10770 | ||
10771 | The transactional memory language description is written for C++, | |
10772 | and uses the C++0x attribute syntax. For compatibility, allow the | |
10773 | bracket style for transactions in C as well. */ | |
10774 | ||
10775 | static tree | |
10776 | c_parser_transaction_attributes (c_parser *parser) | |
10777 | { | |
10778 | tree attr_name, attr = NULL; | |
10779 | ||
10780 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
10781 | return c_parser_attributes (parser); | |
10782 | ||
10783 | if (!c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
10784 | return NULL_TREE; | |
10785 | c_parser_consume_token (parser); | |
10786 | if (!c_parser_require (parser, CPP_OPEN_SQUARE, "expected %<[%>")) | |
10787 | goto error1; | |
10788 | ||
10789 | attr_name = c_parser_attribute_any_word (parser); | |
10790 | if (attr_name) | |
10791 | { | |
10792 | c_parser_consume_token (parser); | |
10793 | attr = build_tree_list (attr_name, NULL_TREE); | |
10794 | } | |
10795 | else | |
10796 | c_parser_error (parser, "expected identifier"); | |
10797 | ||
10798 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
10799 | error1: | |
10800 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
10801 | return attr; | |
10802 | } | |
10803 | ||
10804 | /* Parse a __transaction_atomic or __transaction_relaxed statement | |
10805 | (GCC Extension). | |
10806 | ||
10807 | transaction-statement: | |
10808 | __transaction_atomic transaction-attribute[opt] compound-statement | |
10809 | __transaction_relaxed compound-statement | |
10810 | ||
10811 | Note that the only valid attribute is: "outer". | |
10812 | */ | |
10813 | ||
10814 | static tree | |
10815 | c_parser_transaction (c_parser *parser, enum rid keyword) | |
10816 | { | |
10817 | unsigned int old_in = parser->in_transaction; | |
10818 | unsigned int this_in = 1, new_in; | |
10819 | location_t loc = c_parser_peek_token (parser)->location; | |
10820 | tree stmt, attrs; | |
10821 | ||
10822 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
10823 | || keyword == RID_TRANSACTION_RELAXED) | |
10824 | && c_parser_next_token_is_keyword (parser, keyword)); | |
10825 | c_parser_consume_token (parser); | |
10826 | ||
10827 | if (keyword == RID_TRANSACTION_RELAXED) | |
10828 | this_in |= TM_STMT_ATTR_RELAXED; | |
10829 | else | |
10830 | { | |
10831 | attrs = c_parser_transaction_attributes (parser); | |
10832 | if (attrs) | |
10833 | this_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER); | |
10834 | } | |
10835 | ||
10836 | /* Keep track if we're in the lexical scope of an outer transaction. */ | |
10837 | new_in = this_in | (old_in & TM_STMT_ATTR_OUTER); | |
10838 | ||
10839 | parser->in_transaction = new_in; | |
10840 | stmt = c_parser_compound_statement (parser); | |
10841 | parser->in_transaction = old_in; | |
10842 | ||
10843 | if (flag_tm) | |
10844 | stmt = c_finish_transaction (loc, stmt, this_in); | |
10845 | else | |
10846 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
10847 | "%<__transaction_atomic%> without transactional memory support enabled" | |
10848 | : "%<__transaction_relaxed %> " | |
10849 | "without transactional memory support enabled")); | |
10850 | ||
10851 | return stmt; | |
10852 | } | |
10853 | ||
10854 | /* Parse a __transaction_atomic or __transaction_relaxed expression | |
10855 | (GCC Extension). | |
10856 | ||
10857 | transaction-expression: | |
10858 | __transaction_atomic ( expression ) | |
10859 | __transaction_relaxed ( expression ) | |
10860 | */ | |
10861 | ||
10862 | static struct c_expr | |
10863 | c_parser_transaction_expression (c_parser *parser, enum rid keyword) | |
10864 | { | |
10865 | struct c_expr ret; | |
10866 | unsigned int old_in = parser->in_transaction; | |
10867 | unsigned int this_in = 1; | |
10868 | location_t loc = c_parser_peek_token (parser)->location; | |
10869 | tree attrs; | |
10870 | ||
10871 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
10872 | || keyword == RID_TRANSACTION_RELAXED) | |
10873 | && c_parser_next_token_is_keyword (parser, keyword)); | |
10874 | c_parser_consume_token (parser); | |
10875 | ||
10876 | if (keyword == RID_TRANSACTION_RELAXED) | |
10877 | this_in |= TM_STMT_ATTR_RELAXED; | |
10878 | else | |
10879 | { | |
10880 | attrs = c_parser_transaction_attributes (parser); | |
10881 | if (attrs) | |
10882 | this_in |= parse_tm_stmt_attr (attrs, 0); | |
10883 | } | |
10884 | ||
10885 | parser->in_transaction = this_in; | |
69b76518 | 10886 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
0a35513e AH |
10887 | { |
10888 | tree expr = c_parser_expression (parser).value; | |
10889 | ret.original_type = TREE_TYPE (expr); | |
10890 | ret.value = build1 (TRANSACTION_EXPR, ret.original_type, expr); | |
10891 | if (this_in & TM_STMT_ATTR_RELAXED) | |
10892 | TRANSACTION_EXPR_RELAXED (ret.value) = 1; | |
10893 | SET_EXPR_LOCATION (ret.value, loc); | |
10894 | ret.original_code = TRANSACTION_EXPR; | |
69b76518 TR |
10895 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
10896 | { | |
10897 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
10898 | goto error; | |
10899 | } | |
0a35513e AH |
10900 | } |
10901 | else | |
10902 | { | |
69b76518 | 10903 | error: |
0a35513e AH |
10904 | ret.value = error_mark_node; |
10905 | ret.original_code = ERROR_MARK; | |
10906 | ret.original_type = NULL; | |
10907 | } | |
10908 | parser->in_transaction = old_in; | |
10909 | ||
10910 | if (!flag_tm) | |
10911 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
10912 | "%<__transaction_atomic%> without transactional memory support enabled" | |
10913 | : "%<__transaction_relaxed %> " | |
10914 | "without transactional memory support enabled")); | |
10915 | ||
10916 | return ret; | |
10917 | } | |
10918 | ||
10919 | /* Parse a __transaction_cancel statement (GCC Extension). | |
10920 | ||
10921 | transaction-cancel-statement: | |
10922 | __transaction_cancel transaction-attribute[opt] ; | |
10923 | ||
10924 | Note that the only valid attribute is "outer". | |
10925 | */ | |
10926 | ||
10927 | static tree | |
10928 | c_parser_transaction_cancel(c_parser *parser) | |
10929 | { | |
10930 | location_t loc = c_parser_peek_token (parser)->location; | |
10931 | tree attrs; | |
10932 | bool is_outer = false; | |
10933 | ||
10934 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TRANSACTION_CANCEL)); | |
10935 | c_parser_consume_token (parser); | |
10936 | ||
10937 | attrs = c_parser_transaction_attributes (parser); | |
10938 | if (attrs) | |
10939 | is_outer = (parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER) != 0); | |
10940 | ||
10941 | if (!flag_tm) | |
10942 | { | |
10943 | error_at (loc, "%<__transaction_cancel%> without " | |
10944 | "transactional memory support enabled"); | |
10945 | goto ret_error; | |
10946 | } | |
10947 | else if (parser->in_transaction & TM_STMT_ATTR_RELAXED) | |
10948 | { | |
10949 | error_at (loc, "%<__transaction_cancel%> within a " | |
10950 | "%<__transaction_relaxed%>"); | |
10951 | goto ret_error; | |
10952 | } | |
10953 | else if (is_outer) | |
10954 | { | |
10955 | if ((parser->in_transaction & TM_STMT_ATTR_OUTER) == 0 | |
10956 | && !is_tm_may_cancel_outer (current_function_decl)) | |
10957 | { | |
10958 | error_at (loc, "outer %<__transaction_cancel%> not " | |
10959 | "within outer %<__transaction_atomic%>"); | |
10960 | error_at (loc, " or a %<transaction_may_cancel_outer%> function"); | |
10961 | goto ret_error; | |
10962 | } | |
10963 | } | |
10964 | else if (parser->in_transaction == 0) | |
10965 | { | |
10966 | error_at (loc, "%<__transaction_cancel%> not within " | |
10967 | "%<__transaction_atomic%>"); | |
10968 | goto ret_error; | |
10969 | } | |
10970 | ||
10971 | return add_stmt (build_tm_abort_call (loc, is_outer)); | |
10972 | ||
10973 | ret_error: | |
10974 | return build1 (NOP_EXPR, void_type_node, error_mark_node); | |
10975 | } | |
bc4071dd | 10976 | \f |
27bf414c JM |
10977 | /* Parse a single source file. */ |
10978 | ||
10979 | void | |
10980 | c_parse_file (void) | |
10981 | { | |
bc4071dd RH |
10982 | /* Use local storage to begin. If the first token is a pragma, parse it. |
10983 | If it is #pragma GCC pch_preprocess, then this will load a PCH file | |
10984 | which will cause garbage collection. */ | |
10985 | c_parser tparser; | |
10986 | ||
10987 | memset (&tparser, 0, sizeof tparser); | |
10988 | the_parser = &tparser; | |
10989 | ||
10990 | if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS) | |
10991 | c_parser_pragma_pch_preprocess (&tparser); | |
10992 | ||
a9429e29 | 10993 | the_parser = ggc_alloc_c_parser (); |
bc4071dd RH |
10994 | *the_parser = tparser; |
10995 | ||
f9417da1 RG |
10996 | /* Initialize EH, if we've been told to do so. */ |
10997 | if (flag_exceptions) | |
1d65f45c | 10998 | using_eh_for_cleanups (); |
f9417da1 | 10999 | |
27bf414c JM |
11000 | c_parser_translation_unit (the_parser); |
11001 | the_parser = NULL; | |
11002 | } | |
11003 | ||
36536d79 BI |
11004 | /* This function parses Cilk Plus array notation. The starting index is |
11005 | passed in INITIAL_INDEX and the array name is passes in ARRAY_VALUE. The | |
11006 | return value of this function is a tree_node called VALUE_TREE of type | |
11007 | ARRAY_NOTATION_REF. */ | |
11008 | ||
11009 | static tree | |
11010 | c_parser_array_notation (location_t loc, c_parser *parser, tree initial_index, | |
11011 | tree array_value) | |
11012 | { | |
11013 | c_token *token = NULL; | |
11014 | tree start_index = NULL_TREE, end_index = NULL_TREE, stride = NULL_TREE; | |
11015 | tree value_tree = NULL_TREE, type = NULL_TREE, array_type = NULL_TREE; | |
11016 | tree array_type_domain = NULL_TREE; | |
11017 | ||
11018 | if (array_value == error_mark_node) | |
11019 | { | |
11020 | /* No need to continue. If either of these 2 were true, then an error | |
11021 | must be emitted already. Thus, no need to emit them twice. */ | |
11022 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11023 | return error_mark_node; | |
11024 | } | |
11025 | ||
11026 | array_type = TREE_TYPE (array_value); | |
11027 | gcc_assert (array_type); | |
11028 | type = TREE_TYPE (array_type); | |
11029 | token = c_parser_peek_token (parser); | |
11030 | ||
11031 | if (token->type == CPP_EOF) | |
11032 | { | |
11033 | c_parser_error (parser, "expected %<:%> or numeral"); | |
11034 | return value_tree; | |
11035 | } | |
11036 | else if (token->type == CPP_COLON) | |
11037 | { | |
11038 | if (!initial_index) | |
11039 | { | |
11040 | /* If we are here, then we have a case like this A[:]. */ | |
11041 | c_parser_consume_token (parser); | |
11042 | if (TREE_CODE (array_type) == POINTER_TYPE) | |
11043 | { | |
11044 | error_at (loc, "start-index and length fields necessary for " | |
11045 | "using array notations in pointers"); | |
11046 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11047 | return error_mark_node; | |
11048 | } | |
11049 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
11050 | { | |
11051 | error_at (loc, "array notations cannot be used with function " | |
11052 | "type"); | |
11053 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11054 | return error_mark_node; | |
11055 | } | |
36536d79 BI |
11056 | array_type_domain = TYPE_DOMAIN (array_type); |
11057 | ||
11058 | if (!array_type_domain) | |
11059 | { | |
11060 | error_at (loc, "start-index and length fields necessary for " | |
11061 | "using array notations in dimensionless arrays"); | |
11062 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11063 | return error_mark_node; | |
11064 | } | |
11065 | ||
11066 | start_index = TYPE_MINVAL (array_type_domain); | |
11067 | start_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, | |
11068 | start_index); | |
11069 | if (!TYPE_MAXVAL (array_type_domain) | |
11070 | || !TREE_CONSTANT (TYPE_MAXVAL (array_type_domain))) | |
11071 | { | |
11072 | error_at (loc, "start-index and length fields necessary for " | |
11073 | "using array notations in variable-length arrays"); | |
11074 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11075 | return error_mark_node; | |
11076 | } | |
11077 | end_index = TYPE_MAXVAL (array_type_domain); | |
11078 | end_index = fold_build2 (PLUS_EXPR, TREE_TYPE (end_index), | |
11079 | end_index, integer_one_node); | |
11080 | end_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, end_index); | |
11081 | stride = build_int_cst (integer_type_node, 1); | |
11082 | stride = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, stride); | |
11083 | } | |
11084 | else if (initial_index != error_mark_node) | |
11085 | { | |
11086 | /* If we are here, then there should be 2 possibilities: | |
11087 | 1. Array [EXPR : EXPR] | |
11088 | 2. Array [EXPR : EXPR : EXPR] | |
11089 | */ | |
11090 | start_index = initial_index; | |
11091 | ||
11092 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
11093 | { | |
11094 | error_at (loc, "array notations cannot be used with function " | |
11095 | "type"); | |
11096 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
11097 | return error_mark_node; | |
11098 | } | |
36536d79 BI |
11099 | c_parser_consume_token (parser); /* consume the ':' */ |
11100 | end_index = c_parser_expression (parser).value; | |
11101 | if (!end_index || end_index == error_mark_node) | |
11102 | { | |
11103 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11104 | return error_mark_node; | |
11105 | } | |
11106 | if (c_parser_peek_token (parser)->type == CPP_COLON) | |
11107 | { | |
11108 | c_parser_consume_token (parser); | |
11109 | stride = c_parser_expression (parser).value; | |
11110 | if (!stride || stride == error_mark_node) | |
11111 | { | |
11112 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11113 | return error_mark_node; | |
11114 | } | |
11115 | } | |
11116 | } | |
11117 | else | |
11118 | c_parser_error (parser, "expected array notation expression"); | |
11119 | } | |
11120 | else | |
11121 | c_parser_error (parser, "expected array notation expression"); | |
11122 | ||
11123 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
11124 | ||
11125 | value_tree = build_array_notation_ref (loc, array_value, start_index, | |
11126 | end_index, stride, type); | |
11127 | if (value_tree != error_mark_node) | |
11128 | SET_EXPR_LOCATION (value_tree, loc); | |
11129 | return value_tree; | |
11130 | } | |
11131 | ||
d4a10d0a | 11132 | #include "gt-c-c-parser.h" |