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27bf414c JM |
1 | /* Parser for C and Objective-C. |
2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
7bd11157 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
5df27e4a | 4 | Free Software Foundation, Inc. |
27bf414c JM |
5 | |
6 | Parser actions based on the old Bison parser; structure somewhat | |
7 | influenced by and fragments based on the C++ parser. | |
8 | ||
9 | This file is part of GCC. | |
10 | ||
11 | GCC is free software; you can redistribute it and/or modify it under | |
12 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 13 | Software Foundation; either version 3, or (at your option) any later |
27bf414c JM |
14 | version. |
15 | ||
16 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
17 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
18 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
22 | along with GCC; see the file COPYING3. If not see |
23 | <http://www.gnu.org/licenses/>. */ | |
27bf414c JM |
24 | |
25 | /* TODO: | |
26 | ||
27 | Make sure all relevant comments, and all relevant code from all | |
28 | actions, brought over from old parser. Verify exact correspondence | |
29 | of syntax accepted. | |
30 | ||
31 | Add testcases covering every input symbol in every state in old and | |
32 | new parsers. | |
33 | ||
34 | Include full syntax for GNU C, including erroneous cases accepted | |
35 | with error messages, in syntax productions in comments. | |
36 | ||
37 | Make more diagnostics in the front end generally take an explicit | |
38 | location rather than implicitly using input_location. */ | |
39 | ||
40 | #include "config.h" | |
41 | #include "system.h" | |
42 | #include "coretypes.h" | |
f4ce02c5 | 43 | #include "tm.h" /* For rtl.h: needs enum reg_class. */ |
27bf414c JM |
44 | #include "tree.h" |
45 | #include "langhooks.h" | |
46 | #include "input.h" | |
47 | #include "cpplib.h" | |
48 | #include "timevar.h" | |
39dabefd | 49 | #include "c-family/c-pragma.h" |
27bf414c JM |
50 | #include "c-tree.h" |
51 | #include "flags.h" | |
52 | #include "output.h" | |
27bf414c | 53 | #include "ggc.h" |
39dabefd | 54 | #include "c-family/c-common.h" |
61d3ce20 | 55 | #include "c-family/c-objc.h" |
bc4071dd RH |
56 | #include "vec.h" |
57 | #include "target.h" | |
474eccc6 | 58 | #include "cgraph.h" |
68a607d8 | 59 | #include "plugin.h" |
27bf414c JM |
60 | |
61 | \f | |
27bf414c JM |
62 | /* Initialization routine for this file. */ |
63 | ||
64 | void | |
65 | c_parse_init (void) | |
66 | { | |
67 | /* The only initialization required is of the reserved word | |
68 | identifiers. */ | |
69 | unsigned int i; | |
70 | tree id; | |
eea1139b | 71 | int mask = 0; |
27bf414c | 72 | |
36c5e70a BE |
73 | /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in |
74 | the c_token structure. */ | |
75 | gcc_assert (RID_MAX <= 255); | |
76 | ||
eea1139b ILT |
77 | mask |= D_CXXONLY; |
78 | if (!flag_isoc99) | |
79 | mask |= D_C99; | |
80 | if (flag_no_asm) | |
81 | { | |
82 | mask |= D_ASM | D_EXT; | |
83 | if (!flag_isoc99) | |
84 | mask |= D_EXT89; | |
85 | } | |
27bf414c | 86 | if (!c_dialect_objc ()) |
eea1139b | 87 | mask |= D_OBJC | D_CXX_OBJC; |
27bf414c | 88 | |
a9429e29 | 89 | ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX); |
eea1139b | 90 | for (i = 0; i < num_c_common_reswords; i++) |
27bf414c JM |
91 | { |
92 | /* If a keyword is disabled, do not enter it into the table | |
93 | and so create a canonical spelling that isn't a keyword. */ | |
eea1139b ILT |
94 | if (c_common_reswords[i].disable & mask) |
95 | { | |
96 | if (warn_cxx_compat | |
97 | && (c_common_reswords[i].disable & D_CXXWARN)) | |
98 | { | |
99 | id = get_identifier (c_common_reswords[i].word); | |
100 | C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN); | |
101 | C_IS_RESERVED_WORD (id) = 1; | |
102 | } | |
103 | continue; | |
104 | } | |
27bf414c | 105 | |
eea1139b ILT |
106 | id = get_identifier (c_common_reswords[i].word); |
107 | C_SET_RID_CODE (id, c_common_reswords[i].rid); | |
27bf414c | 108 | C_IS_RESERVED_WORD (id) = 1; |
eea1139b | 109 | ridpointers [(int) c_common_reswords[i].rid] = id; |
27bf414c JM |
110 | } |
111 | } | |
112 | \f | |
113 | /* The C lexer intermediates between the lexer in cpplib and c-lex.c | |
114 | and the C parser. Unlike the C++ lexer, the parser structure | |
115 | stores the lexer information instead of using a separate structure. | |
116 | Identifiers are separated into ordinary identifiers, type names, | |
117 | keywords and some other Objective-C types of identifiers, and some | |
118 | look-ahead is maintained. | |
119 | ||
120 | ??? It might be a good idea to lex the whole file up front (as for | |
121 | C++). It would then be possible to share more of the C and C++ | |
122 | lexer code, if desired. */ | |
123 | ||
124 | /* The following local token type is used. */ | |
125 | ||
126 | /* A keyword. */ | |
127 | #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) | |
128 | ||
27bf414c JM |
129 | /* More information about the type of a CPP_NAME token. */ |
130 | typedef enum c_id_kind { | |
131 | /* An ordinary identifier. */ | |
132 | C_ID_ID, | |
133 | /* An identifier declared as a typedef name. */ | |
134 | C_ID_TYPENAME, | |
135 | /* An identifier declared as an Objective-C class name. */ | |
136 | C_ID_CLASSNAME, | |
36c5e70a BE |
137 | /* An address space identifier. */ |
138 | C_ID_ADDRSPACE, | |
27bf414c JM |
139 | /* Not an identifier. */ |
140 | C_ID_NONE | |
141 | } c_id_kind; | |
142 | ||
143 | /* A single C token after string literal concatenation and conversion | |
144 | of preprocessing tokens to tokens. */ | |
d1b38208 | 145 | typedef struct GTY (()) c_token { |
27bf414c JM |
146 | /* The kind of token. */ |
147 | ENUM_BITFIELD (cpp_ttype) type : 8; | |
148 | /* If this token is a CPP_NAME, this value indicates whether also | |
149 | declared as some kind of type. Otherwise, it is C_ID_NONE. */ | |
150 | ENUM_BITFIELD (c_id_kind) id_kind : 8; | |
151 | /* If this token is a keyword, this value indicates which keyword. | |
152 | Otherwise, this value is RID_MAX. */ | |
153 | ENUM_BITFIELD (rid) keyword : 8; | |
bc4071dd RH |
154 | /* If this token is a CPP_PRAGMA, this indicates the pragma that |
155 | was seen. Otherwise it is PRAGMA_NONE. */ | |
13fa1171 | 156 | ENUM_BITFIELD (pragma_kind) pragma_kind : 8; |
27bf414c JM |
157 | /* The location at which this token was found. */ |
158 | location_t location; | |
8415f317 NF |
159 | /* The value associated with this token, if any. */ |
160 | tree value; | |
27bf414c JM |
161 | } c_token; |
162 | ||
163 | /* A parser structure recording information about the state and | |
164 | context of parsing. Includes lexer information with up to two | |
165 | tokens of look-ahead; more are not needed for C. */ | |
d1b38208 | 166 | typedef struct GTY(()) c_parser { |
27bf414c JM |
167 | /* The look-ahead tokens. */ |
168 | c_token tokens[2]; | |
169 | /* How many look-ahead tokens are available (0, 1 or 2). */ | |
170 | short tokens_avail; | |
171 | /* True if a syntax error is being recovered from; false otherwise. | |
172 | c_parser_error sets this flag. It should clear this flag when | |
173 | enough tokens have been consumed to recover from the error. */ | |
174 | BOOL_BITFIELD error : 1; | |
bc4071dd RH |
175 | /* True if we're processing a pragma, and shouldn't automatically |
176 | consume CPP_PRAGMA_EOL. */ | |
177 | BOOL_BITFIELD in_pragma : 1; | |
b4b56033 MLI |
178 | /* True if we're parsing the outermost block of an if statement. */ |
179 | BOOL_BITFIELD in_if_block : 1; | |
46c2514e TT |
180 | /* True if we want to lex an untranslated string. */ |
181 | BOOL_BITFIELD lex_untranslated_string : 1; | |
1973201f | 182 | |
0bacb8c7 | 183 | /* Objective-C specific parser/lexer information. */ |
1973201f NP |
184 | |
185 | /* True if we are in a context where the Objective-C "PQ" keywords | |
186 | are considered keywords. */ | |
0bacb8c7 | 187 | BOOL_BITFIELD objc_pq_context : 1; |
f05b9d93 NP |
188 | /* True if we are parsing a (potential) Objective-C foreach |
189 | statement. This is set to true after we parsed 'for (' and while | |
190 | we wait for 'in' or ';' to decide if it's a standard C for loop or an | |
191 | Objective-C foreach loop. */ | |
192 | BOOL_BITFIELD objc_could_be_foreach_context : 1; | |
0bacb8c7 TT |
193 | /* The following flag is needed to contextualize Objective-C lexical |
194 | analysis. In some cases (e.g., 'int NSObject;'), it is | |
195 | undesirable to bind an identifier to an Objective-C class, even | |
196 | if a class with that name exists. */ | |
197 | BOOL_BITFIELD objc_need_raw_identifier : 1; | |
668ea4b1 IS |
198 | /* True if we are in a context where the Objective-C "Property attribute" |
199 | keywords are valid. */ | |
200 | BOOL_BITFIELD objc_property_attr_context : 1; | |
27bf414c JM |
201 | } c_parser; |
202 | ||
bc4071dd RH |
203 | |
204 | /* The actual parser and external interface. ??? Does this need to be | |
205 | garbage-collected? */ | |
206 | ||
207 | static GTY (()) c_parser *the_parser; | |
208 | ||
27bf414c JM |
209 | /* Read in and lex a single token, storing it in *TOKEN. */ |
210 | ||
211 | static void | |
0bacb8c7 | 212 | c_lex_one_token (c_parser *parser, c_token *token) |
27bf414c JM |
213 | { |
214 | timevar_push (TV_LEX); | |
bc4071dd | 215 | |
46c2514e TT |
216 | token->type = c_lex_with_flags (&token->value, &token->location, NULL, |
217 | (parser->lex_untranslated_string | |
218 | ? C_LEX_STRING_NO_TRANSLATE : 0)); | |
bc4071dd RH |
219 | token->id_kind = C_ID_NONE; |
220 | token->keyword = RID_MAX; | |
221 | token->pragma_kind = PRAGMA_NONE; | |
bc4071dd | 222 | |
27bf414c JM |
223 | switch (token->type) |
224 | { | |
225 | case CPP_NAME: | |
27bf414c JM |
226 | { |
227 | tree decl; | |
228 | ||
0bacb8c7 TT |
229 | bool objc_force_identifier = parser->objc_need_raw_identifier; |
230 | if (c_dialect_objc ()) | |
231 | parser->objc_need_raw_identifier = false; | |
27bf414c JM |
232 | |
233 | if (C_IS_RESERVED_WORD (token->value)) | |
234 | { | |
235 | enum rid rid_code = C_RID_CODE (token->value); | |
236 | ||
eea1139b ILT |
237 | if (rid_code == RID_CXX_COMPAT_WARN) |
238 | { | |
3ba09659 AH |
239 | warning_at (token->location, |
240 | OPT_Wc___compat, | |
88388a52 JM |
241 | "identifier %qE conflicts with C++ keyword", |
242 | token->value); | |
eea1139b | 243 | } |
36c5e70a BE |
244 | else if (rid_code >= RID_FIRST_ADDR_SPACE |
245 | && rid_code <= RID_LAST_ADDR_SPACE) | |
246 | { | |
247 | token->id_kind = C_ID_ADDRSPACE; | |
248 | token->keyword = rid_code; | |
249 | break; | |
250 | } | |
1973201f | 251 | else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code)) |
27bf414c | 252 | { |
1973201f NP |
253 | /* We found an Objective-C "pq" keyword (in, out, |
254 | inout, bycopy, byref, oneway). They need special | |
255 | care because the interpretation depends on the | |
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: | |
27bf414c JM |
653 | return true; |
654 | default: | |
655 | return false; | |
656 | } | |
657 | case CPP_LESS: | |
658 | if (c_dialect_objc ()) | |
659 | return true; | |
660 | return false; | |
661 | default: | |
662 | return false; | |
663 | } | |
664 | } | |
665 | ||
32912286 JM |
666 | |
667 | /* Return true if TOKEN can start declaration specifiers or a static | |
668 | assertion, false otherwise. */ | |
669 | static bool | |
670 | c_token_starts_declaration (c_token *token) | |
671 | { | |
672 | if (c_token_starts_declspecs (token) | |
673 | || token->keyword == RID_STATIC_ASSERT) | |
674 | return true; | |
675 | else | |
676 | return false; | |
677 | } | |
678 | ||
27bf414c JM |
679 | /* Return true if the next token from PARSER can start declaration |
680 | specifiers, false otherwise. */ | |
681 | static inline bool | |
682 | c_parser_next_token_starts_declspecs (c_parser *parser) | |
683 | { | |
684 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
685 | |
686 | /* In Objective-C, a classname normally starts a declspecs unless it | |
687 | is immediately followed by a dot. In that case, it is the | |
688 | Objective-C 2.0 "dot-syntax" for class objects, ie, calls the | |
689 | setter/getter on the class. c_token_starts_declspecs() can't | |
690 | differentiate between the two cases because it only checks the | |
691 | current token, so we have a special check here. */ | |
692 | if (c_dialect_objc () | |
693 | && token->type == CPP_NAME | |
694 | && token->id_kind == C_ID_CLASSNAME | |
695 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
696 | return false; | |
697 | ||
27bf414c JM |
698 | return c_token_starts_declspecs (token); |
699 | } | |
700 | ||
2f413185 | 701 | /* Return true if the next tokens from PARSER can start declaration |
32912286 JM |
702 | specifiers or a static assertion, false otherwise. */ |
703 | static inline bool | |
2f413185 | 704 | c_parser_next_tokens_start_declaration (c_parser *parser) |
32912286 JM |
705 | { |
706 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
707 | |
708 | /* Same as above. */ | |
709 | if (c_dialect_objc () | |
710 | && token->type == CPP_NAME | |
711 | && token->id_kind == C_ID_CLASSNAME | |
712 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
713 | return false; | |
714 | ||
2f413185 PB |
715 | /* Labels do not start declarations. */ |
716 | if (token->type == CPP_NAME | |
717 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
718 | return false; | |
719 | ||
720 | if (c_token_starts_declaration (token)) | |
721 | return true; | |
722 | ||
29ce73cb | 723 | if (c_parser_next_tokens_start_typename (parser, cla_nonabstract_decl)) |
2f413185 PB |
724 | return true; |
725 | ||
726 | return false; | |
32912286 JM |
727 | } |
728 | ||
27bf414c JM |
729 | /* Consume the next token from PARSER. */ |
730 | ||
731 | static void | |
732 | c_parser_consume_token (c_parser *parser) | |
733 | { | |
bc4071dd RH |
734 | gcc_assert (parser->tokens_avail >= 1); |
735 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
736 | gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL); | |
737 | gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA); | |
27bf414c JM |
738 | if (parser->tokens_avail == 2) |
739 | parser->tokens[0] = parser->tokens[1]; | |
27bf414c JM |
740 | parser->tokens_avail--; |
741 | } | |
742 | ||
bc4071dd RH |
743 | /* Expect the current token to be a #pragma. Consume it and remember |
744 | that we've begun parsing a pragma. */ | |
745 | ||
746 | static void | |
747 | c_parser_consume_pragma (c_parser *parser) | |
748 | { | |
749 | gcc_assert (!parser->in_pragma); | |
750 | gcc_assert (parser->tokens_avail >= 1); | |
751 | gcc_assert (parser->tokens[0].type == CPP_PRAGMA); | |
752 | if (parser->tokens_avail == 2) | |
753 | parser->tokens[0] = parser->tokens[1]; | |
754 | parser->tokens_avail--; | |
755 | parser->in_pragma = true; | |
756 | } | |
757 | ||
27bf414c JM |
758 | /* Update the globals input_location and in_system_header from |
759 | TOKEN. */ | |
760 | static inline void | |
761 | c_parser_set_source_position_from_token (c_token *token) | |
762 | { | |
763 | if (token->type != CPP_EOF) | |
764 | { | |
765 | input_location = token->location; | |
27bf414c JM |
766 | } |
767 | } | |
768 | ||
27bf414c JM |
769 | /* Issue a diagnostic of the form |
770 | FILE:LINE: MESSAGE before TOKEN | |
771 | where TOKEN is the next token in the input stream of PARSER. | |
772 | MESSAGE (specified by the caller) is usually of the form "expected | |
773 | OTHER-TOKEN". | |
774 | ||
775 | Do not issue a diagnostic if still recovering from an error. | |
776 | ||
777 | ??? This is taken from the C++ parser, but building up messages in | |
778 | this way is not i18n-friendly and some other approach should be | |
779 | used. */ | |
780 | ||
781 | static void | |
4b794eaf | 782 | c_parser_error (c_parser *parser, const char *gmsgid) |
27bf414c JM |
783 | { |
784 | c_token *token = c_parser_peek_token (parser); | |
785 | if (parser->error) | |
786 | return; | |
787 | parser->error = true; | |
4b794eaf | 788 | if (!gmsgid) |
27bf414c JM |
789 | return; |
790 | /* This diagnostic makes more sense if it is tagged to the line of | |
791 | the token we just peeked at. */ | |
792 | c_parser_set_source_position_from_token (token); | |
4b794eaf | 793 | c_parse_error (gmsgid, |
27bf414c JM |
794 | /* Because c_parse_error does not understand |
795 | CPP_KEYWORD, keywords are treated like | |
796 | identifiers. */ | |
797 | (token->type == CPP_KEYWORD ? CPP_NAME : token->type), | |
cfc93532 MLI |
798 | /* ??? The C parser does not save the cpp flags of a |
799 | token, we need to pass 0 here and we will not get | |
800 | the source spelling of some tokens but rather the | |
801 | canonical spelling. */ | |
802 | token->value, /*flags=*/0); | |
27bf414c JM |
803 | } |
804 | ||
805 | /* If the next token is of the indicated TYPE, consume it. Otherwise, | |
806 | issue the error MSGID. If MSGID is NULL then a message has already | |
807 | been produced and no message will be produced this time. Returns | |
808 | true if found, false otherwise. */ | |
809 | ||
810 | static bool | |
811 | c_parser_require (c_parser *parser, | |
812 | enum cpp_ttype type, | |
813 | const char *msgid) | |
814 | { | |
815 | if (c_parser_next_token_is (parser, type)) | |
816 | { | |
817 | c_parser_consume_token (parser); | |
818 | return true; | |
819 | } | |
820 | else | |
821 | { | |
822 | c_parser_error (parser, msgid); | |
823 | return false; | |
824 | } | |
825 | } | |
826 | ||
827 | /* If the next token is the indicated keyword, consume it. Otherwise, | |
828 | issue the error MSGID. Returns true if found, false otherwise. */ | |
829 | ||
830 | static bool | |
831 | c_parser_require_keyword (c_parser *parser, | |
832 | enum rid keyword, | |
833 | const char *msgid) | |
834 | { | |
835 | if (c_parser_next_token_is_keyword (parser, keyword)) | |
836 | { | |
837 | c_parser_consume_token (parser); | |
838 | return true; | |
839 | } | |
840 | else | |
841 | { | |
842 | c_parser_error (parser, msgid); | |
843 | return false; | |
844 | } | |
845 | } | |
846 | ||
847 | /* Like c_parser_require, except that tokens will be skipped until the | |
848 | desired token is found. An error message is still produced if the | |
849 | next token is not as expected. If MSGID is NULL then a message has | |
850 | already been produced and no message will be produced this | |
851 | time. */ | |
852 | ||
853 | static void | |
854 | c_parser_skip_until_found (c_parser *parser, | |
855 | enum cpp_ttype type, | |
856 | const char *msgid) | |
857 | { | |
858 | unsigned nesting_depth = 0; | |
859 | ||
860 | if (c_parser_require (parser, type, msgid)) | |
861 | return; | |
862 | ||
863 | /* Skip tokens until the desired token is found. */ | |
864 | while (true) | |
865 | { | |
866 | /* Peek at the next token. */ | |
867 | c_token *token = c_parser_peek_token (parser); | |
868 | /* If we've reached the token we want, consume it and stop. */ | |
869 | if (token->type == type && !nesting_depth) | |
870 | { | |
871 | c_parser_consume_token (parser); | |
872 | break; | |
873 | } | |
bc4071dd | 874 | |
27bf414c JM |
875 | /* If we've run out of tokens, stop. */ |
876 | if (token->type == CPP_EOF) | |
877 | return; | |
bc4071dd RH |
878 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
879 | return; | |
27bf414c JM |
880 | if (token->type == CPP_OPEN_BRACE |
881 | || token->type == CPP_OPEN_PAREN | |
882 | || token->type == CPP_OPEN_SQUARE) | |
883 | ++nesting_depth; | |
884 | else if (token->type == CPP_CLOSE_BRACE | |
885 | || token->type == CPP_CLOSE_PAREN | |
886 | || token->type == CPP_CLOSE_SQUARE) | |
887 | { | |
888 | if (nesting_depth-- == 0) | |
889 | break; | |
890 | } | |
891 | /* Consume this token. */ | |
892 | c_parser_consume_token (parser); | |
893 | } | |
894 | parser->error = false; | |
895 | } | |
896 | ||
897 | /* Skip tokens until the end of a parameter is found, but do not | |
898 | consume the comma, semicolon or closing delimiter. */ | |
899 | ||
900 | static void | |
901 | c_parser_skip_to_end_of_parameter (c_parser *parser) | |
902 | { | |
903 | unsigned nesting_depth = 0; | |
904 | ||
905 | while (true) | |
906 | { | |
907 | c_token *token = c_parser_peek_token (parser); | |
908 | if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON) | |
909 | && !nesting_depth) | |
910 | break; | |
911 | /* If we've run out of tokens, stop. */ | |
912 | if (token->type == CPP_EOF) | |
913 | return; | |
bc4071dd RH |
914 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
915 | return; | |
27bf414c JM |
916 | if (token->type == CPP_OPEN_BRACE |
917 | || token->type == CPP_OPEN_PAREN | |
918 | || token->type == CPP_OPEN_SQUARE) | |
919 | ++nesting_depth; | |
920 | else if (token->type == CPP_CLOSE_BRACE | |
921 | || token->type == CPP_CLOSE_PAREN | |
922 | || token->type == CPP_CLOSE_SQUARE) | |
923 | { | |
924 | if (nesting_depth-- == 0) | |
925 | break; | |
926 | } | |
927 | /* Consume this token. */ | |
928 | c_parser_consume_token (parser); | |
929 | } | |
930 | parser->error = false; | |
931 | } | |
932 | ||
bc4071dd RH |
933 | /* Expect to be at the end of the pragma directive and consume an |
934 | end of line marker. */ | |
935 | ||
936 | static void | |
937 | c_parser_skip_to_pragma_eol (c_parser *parser) | |
938 | { | |
939 | gcc_assert (parser->in_pragma); | |
940 | parser->in_pragma = false; | |
941 | ||
942 | if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line")) | |
943 | while (true) | |
944 | { | |
945 | c_token *token = c_parser_peek_token (parser); | |
946 | if (token->type == CPP_EOF) | |
947 | break; | |
948 | if (token->type == CPP_PRAGMA_EOL) | |
949 | { | |
950 | c_parser_consume_token (parser); | |
951 | break; | |
952 | } | |
953 | c_parser_consume_token (parser); | |
954 | } | |
955 | ||
956 | parser->error = false; | |
957 | } | |
27bf414c | 958 | |
2a83cc52 RH |
959 | /* Skip tokens until we have consumed an entire block, or until we |
960 | have consumed a non-nested ';'. */ | |
961 | ||
962 | static void | |
963 | c_parser_skip_to_end_of_block_or_statement (c_parser *parser) | |
964 | { | |
965 | unsigned nesting_depth = 0; | |
966 | bool save_error = parser->error; | |
967 | ||
968 | while (true) | |
969 | { | |
970 | c_token *token; | |
971 | ||
972 | /* Peek at the next token. */ | |
973 | token = c_parser_peek_token (parser); | |
974 | ||
975 | switch (token->type) | |
976 | { | |
977 | case CPP_EOF: | |
978 | return; | |
979 | ||
980 | case CPP_PRAGMA_EOL: | |
981 | if (parser->in_pragma) | |
982 | return; | |
983 | break; | |
984 | ||
985 | case CPP_SEMICOLON: | |
986 | /* If the next token is a ';', we have reached the | |
987 | end of the statement. */ | |
988 | if (!nesting_depth) | |
989 | { | |
990 | /* Consume the ';'. */ | |
991 | c_parser_consume_token (parser); | |
992 | goto finished; | |
993 | } | |
994 | break; | |
995 | ||
996 | case CPP_CLOSE_BRACE: | |
997 | /* If the next token is a non-nested '}', then we have | |
998 | reached the end of the current block. */ | |
999 | if (nesting_depth == 0 || --nesting_depth == 0) | |
1000 | { | |
1001 | c_parser_consume_token (parser); | |
1002 | goto finished; | |
1003 | } | |
1004 | break; | |
1005 | ||
1006 | case CPP_OPEN_BRACE: | |
1007 | /* If it the next token is a '{', then we are entering a new | |
1008 | block. Consume the entire block. */ | |
1009 | ++nesting_depth; | |
1010 | break; | |
1011 | ||
1012 | case CPP_PRAGMA: | |
1013 | /* If we see a pragma, consume the whole thing at once. We | |
1014 | have some safeguards against consuming pragmas willy-nilly. | |
1015 | Normally, we'd expect to be here with parser->error set, | |
1016 | which disables these safeguards. But it's possible to get | |
1017 | here for secondary error recovery, after parser->error has | |
1018 | been cleared. */ | |
1019 | c_parser_consume_pragma (parser); | |
1020 | c_parser_skip_to_pragma_eol (parser); | |
1021 | parser->error = save_error; | |
1022 | continue; | |
9e33de05 RS |
1023 | |
1024 | default: | |
1025 | break; | |
2a83cc52 RH |
1026 | } |
1027 | ||
1028 | c_parser_consume_token (parser); | |
1029 | } | |
1030 | ||
1031 | finished: | |
1032 | parser->error = false; | |
1033 | } | |
1034 | ||
d2e796ad MLI |
1035 | /* CPP's options (initialized by c-opts.c). */ |
1036 | extern cpp_options *cpp_opts; | |
1037 | ||
27bf414c JM |
1038 | /* Save the warning flags which are controlled by __extension__. */ |
1039 | ||
1040 | static inline int | |
1041 | disable_extension_diagnostics (void) | |
1042 | { | |
1043 | int ret = (pedantic | |
1044 | | (warn_pointer_arith << 1) | |
1045 | | (warn_traditional << 2) | |
d2e796ad | 1046 | | (flag_iso << 3) |
24b97832 | 1047 | | (warn_long_long << 4) |
b3ab9ea2 TT |
1048 | | (warn_cxx_compat << 5) |
1049 | | (warn_overlength_strings << 6)); | |
e3339d0f | 1050 | cpp_opts->cpp_pedantic = pedantic = 0; |
27bf414c | 1051 | warn_pointer_arith = 0; |
e3339d0f | 1052 | cpp_opts->cpp_warn_traditional = warn_traditional = 0; |
27bf414c | 1053 | flag_iso = 0; |
e3339d0f | 1054 | cpp_opts->cpp_warn_long_long = warn_long_long = 0; |
24b97832 | 1055 | warn_cxx_compat = 0; |
b3ab9ea2 | 1056 | warn_overlength_strings = 0; |
27bf414c JM |
1057 | return ret; |
1058 | } | |
1059 | ||
1060 | /* Restore the warning flags which are controlled by __extension__. | |
1061 | FLAGS is the return value from disable_extension_diagnostics. */ | |
1062 | ||
1063 | static inline void | |
1064 | restore_extension_diagnostics (int flags) | |
1065 | { | |
e3339d0f | 1066 | cpp_opts->cpp_pedantic = pedantic = flags & 1; |
27bf414c | 1067 | warn_pointer_arith = (flags >> 1) & 1; |
e3339d0f | 1068 | cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1; |
27bf414c | 1069 | flag_iso = (flags >> 3) & 1; |
e3339d0f | 1070 | cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1; |
24b97832 | 1071 | warn_cxx_compat = (flags >> 5) & 1; |
b3ab9ea2 | 1072 | warn_overlength_strings = (flags >> 6) & 1; |
27bf414c JM |
1073 | } |
1074 | ||
1075 | /* Possibly kinds of declarator to parse. */ | |
1076 | typedef enum c_dtr_syn { | |
1077 | /* A normal declarator with an identifier. */ | |
1078 | C_DTR_NORMAL, | |
1079 | /* An abstract declarator (maybe empty). */ | |
1080 | C_DTR_ABSTRACT, | |
1081 | /* A parameter declarator: may be either, but after a type name does | |
1082 | not redeclare a typedef name as an identifier if it can | |
1083 | alternatively be interpreted as a typedef name; see DR#009, | |
1084 | applied in C90 TC1, omitted from C99 and reapplied in C99 TC2 | |
1085 | following DR#249. For example, given a typedef T, "int T" and | |
1086 | "int *T" are valid parameter declarations redeclaring T, while | |
1087 | "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are | |
1088 | abstract declarators rather than involving redundant parentheses; | |
1089 | the same applies with attributes inside the parentheses before | |
1090 | "T". */ | |
1091 | C_DTR_PARM | |
1092 | } c_dtr_syn; | |
1093 | ||
20906c66 JJ |
1094 | /* The binary operation precedence levels, where 0 is a dummy lowest level |
1095 | used for the bottom of the stack. */ | |
1096 | enum c_parser_prec { | |
1097 | PREC_NONE, | |
1098 | PREC_LOGOR, | |
1099 | PREC_LOGAND, | |
1100 | PREC_BITOR, | |
1101 | PREC_BITXOR, | |
1102 | PREC_BITAND, | |
1103 | PREC_EQ, | |
1104 | PREC_REL, | |
1105 | PREC_SHIFT, | |
1106 | PREC_ADD, | |
1107 | PREC_MULT, | |
1108 | NUM_PRECS | |
1109 | }; | |
1110 | ||
27bf414c JM |
1111 | static void c_parser_external_declaration (c_parser *); |
1112 | static void c_parser_asm_definition (c_parser *); | |
32912286 | 1113 | static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, |
f05b9d93 | 1114 | bool, bool, tree *); |
32912286 JM |
1115 | static void c_parser_static_assert_declaration_no_semi (c_parser *); |
1116 | static void c_parser_static_assert_declaration (c_parser *); | |
27bf414c | 1117 | static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool, |
29ce73cb | 1118 | bool, enum c_lookahead_kind); |
27bf414c JM |
1119 | static struct c_typespec c_parser_enum_specifier (c_parser *); |
1120 | static struct c_typespec c_parser_struct_or_union_specifier (c_parser *); | |
1121 | static tree c_parser_struct_declaration (c_parser *); | |
1122 | static struct c_typespec c_parser_typeof_specifier (c_parser *); | |
1123 | static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn, | |
1124 | bool *); | |
1125 | static struct c_declarator *c_parser_direct_declarator (c_parser *, bool, | |
1126 | c_dtr_syn, bool *); | |
1127 | static struct c_declarator *c_parser_direct_declarator_inner (c_parser *, | |
1128 | bool, | |
1129 | struct c_declarator *); | |
1130 | static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree); | |
a04a722b JM |
1131 | static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree, |
1132 | tree); | |
27bf414c JM |
1133 | static struct c_parm *c_parser_parameter_declaration (c_parser *, tree); |
1134 | static tree c_parser_simple_asm_expr (c_parser *); | |
1135 | static tree c_parser_attributes (c_parser *); | |
1136 | static struct c_type_name *c_parser_type_name (c_parser *); | |
1137 | static struct c_expr c_parser_initializer (c_parser *); | |
1138 | static struct c_expr c_parser_braced_init (c_parser *, tree, bool); | |
a1e3b3d9 LB |
1139 | static void c_parser_initelt (c_parser *, struct obstack *); |
1140 | static void c_parser_initval (c_parser *, struct c_expr *, | |
1141 | struct obstack *); | |
27bf414c JM |
1142 | static tree c_parser_compound_statement (c_parser *); |
1143 | static void c_parser_compound_statement_nostart (c_parser *); | |
1144 | static void c_parser_label (c_parser *); | |
1145 | static void c_parser_statement (c_parser *); | |
1146 | static void c_parser_statement_after_labels (c_parser *); | |
1147 | static void c_parser_if_statement (c_parser *); | |
1148 | static void c_parser_switch_statement (c_parser *); | |
1149 | static void c_parser_while_statement (c_parser *); | |
1150 | static void c_parser_do_statement (c_parser *); | |
1151 | static void c_parser_for_statement (c_parser *); | |
1152 | static tree c_parser_asm_statement (c_parser *); | |
46bdb9cf | 1153 | static tree c_parser_asm_operands (c_parser *, bool); |
1c384bf1 | 1154 | static tree c_parser_asm_goto_operands (c_parser *); |
27bf414c JM |
1155 | static tree c_parser_asm_clobbers (c_parser *); |
1156 | static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *); | |
1157 | static struct c_expr c_parser_conditional_expression (c_parser *, | |
1158 | struct c_expr *); | |
20906c66 JJ |
1159 | static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *, |
1160 | enum c_parser_prec); | |
27bf414c JM |
1161 | static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *); |
1162 | static struct c_expr c_parser_unary_expression (c_parser *); | |
1163 | static struct c_expr c_parser_sizeof_expression (c_parser *); | |
1164 | static struct c_expr c_parser_alignof_expression (c_parser *); | |
1165 | static struct c_expr c_parser_postfix_expression (c_parser *); | |
1166 | static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *, | |
24b97832 ILT |
1167 | struct c_type_name *, |
1168 | location_t); | |
27bf414c | 1169 | static struct c_expr c_parser_postfix_expression_after_primary (c_parser *, |
c2255bc4 | 1170 | location_t loc, |
27bf414c JM |
1171 | struct c_expr); |
1172 | static struct c_expr c_parser_expression (c_parser *); | |
46bdb9cf | 1173 | static struct c_expr c_parser_expression_conv (c_parser *); |
bbbbb16a ILT |
1174 | static VEC(tree,gc) *c_parser_expr_list (c_parser *, bool, bool, |
1175 | VEC(tree,gc) **); | |
953ff289 DN |
1176 | static void c_parser_omp_construct (c_parser *); |
1177 | static void c_parser_omp_threadprivate (c_parser *); | |
1178 | static void c_parser_omp_barrier (c_parser *); | |
1179 | static void c_parser_omp_flush (c_parser *); | |
a68ab351 | 1180 | static void c_parser_omp_taskwait (c_parser *); |
20906c66 | 1181 | static void c_parser_omp_taskyield (c_parser *); |
27bf414c | 1182 | |
bc4071dd RH |
1183 | enum pragma_context { pragma_external, pragma_stmt, pragma_compound }; |
1184 | static bool c_parser_pragma (c_parser *, enum pragma_context); | |
1185 | ||
27bf414c JM |
1186 | /* These Objective-C parser functions are only ever called when |
1187 | compiling Objective-C. */ | |
c165dca7 | 1188 | static void c_parser_objc_class_definition (c_parser *, tree); |
27bf414c JM |
1189 | static void c_parser_objc_class_instance_variables (c_parser *); |
1190 | static void c_parser_objc_class_declaration (c_parser *); | |
1191 | static void c_parser_objc_alias_declaration (c_parser *); | |
c165dca7 | 1192 | static void c_parser_objc_protocol_definition (c_parser *, tree); |
249a82c4 | 1193 | static bool c_parser_objc_method_type (c_parser *); |
27bf414c JM |
1194 | static void c_parser_objc_method_definition (c_parser *); |
1195 | static void c_parser_objc_methodprotolist (c_parser *); | |
1196 | static void c_parser_objc_methodproto (c_parser *); | |
a04a722b | 1197 | static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *); |
27bf414c JM |
1198 | static tree c_parser_objc_type_name (c_parser *); |
1199 | static tree c_parser_objc_protocol_refs (c_parser *); | |
437c2322 | 1200 | static void c_parser_objc_try_catch_finally_statement (c_parser *); |
27bf414c JM |
1201 | static void c_parser_objc_synchronized_statement (c_parser *); |
1202 | static tree c_parser_objc_selector (c_parser *); | |
1203 | static tree c_parser_objc_selector_arg (c_parser *); | |
1204 | static tree c_parser_objc_receiver (c_parser *); | |
1205 | static tree c_parser_objc_message_args (c_parser *); | |
1206 | static tree c_parser_objc_keywordexpr (c_parser *); | |
f614132b | 1207 | static void c_parser_objc_at_property_declaration (c_parser *); |
da57d1b9 NP |
1208 | static void c_parser_objc_at_synthesize_declaration (c_parser *); |
1209 | static void c_parser_objc_at_dynamic_declaration (c_parser *); | |
668ea4b1 | 1210 | static bool c_parser_objc_diagnose_bad_element_prefix |
c165dca7 | 1211 | (c_parser *, struct c_declspecs *); |
27bf414c JM |
1212 | |
1213 | /* Parse a translation unit (C90 6.7, C99 6.9). | |
1214 | ||
1215 | translation-unit: | |
1216 | external-declarations | |
1217 | ||
1218 | external-declarations: | |
1219 | external-declaration | |
1220 | external-declarations external-declaration | |
1221 | ||
1222 | GNU extensions: | |
1223 | ||
1224 | translation-unit: | |
1225 | empty | |
1226 | */ | |
1227 | ||
1228 | static void | |
1229 | c_parser_translation_unit (c_parser *parser) | |
1230 | { | |
1231 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
1232 | { | |
b8698a0f | 1233 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 1234 | "ISO C forbids an empty translation unit"); |
27bf414c JM |
1235 | } |
1236 | else | |
1237 | { | |
1238 | void *obstack_position = obstack_alloc (&parser_obstack, 0); | |
6ec637a4 | 1239 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
1240 | do |
1241 | { | |
1242 | ggc_collect (); | |
1243 | c_parser_external_declaration (parser); | |
1244 | obstack_free (&parser_obstack, obstack_position); | |
1245 | } | |
1246 | while (c_parser_next_token_is_not (parser, CPP_EOF)); | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | /* Parse an external declaration (C90 6.7, C99 6.9). | |
1251 | ||
1252 | external-declaration: | |
1253 | function-definition | |
1254 | declaration | |
1255 | ||
1256 | GNU extensions: | |
1257 | ||
1258 | external-declaration: | |
1259 | asm-definition | |
1260 | ; | |
1261 | __extension__ external-declaration | |
1262 | ||
1263 | Objective-C: | |
1264 | ||
1265 | external-declaration: | |
1266 | objc-class-definition | |
1267 | objc-class-declaration | |
1268 | objc-alias-declaration | |
1269 | objc-protocol-definition | |
1270 | objc-method-definition | |
1271 | @end | |
1272 | */ | |
1273 | ||
1274 | static void | |
1275 | c_parser_external_declaration (c_parser *parser) | |
1276 | { | |
1277 | int ext; | |
1278 | switch (c_parser_peek_token (parser)->type) | |
1279 | { | |
1280 | case CPP_KEYWORD: | |
1281 | switch (c_parser_peek_token (parser)->keyword) | |
1282 | { | |
1283 | case RID_EXTENSION: | |
1284 | ext = disable_extension_diagnostics (); | |
1285 | c_parser_consume_token (parser); | |
1286 | c_parser_external_declaration (parser); | |
1287 | restore_extension_diagnostics (ext); | |
1288 | break; | |
1289 | case RID_ASM: | |
1290 | c_parser_asm_definition (parser); | |
1291 | break; | |
1292 | case RID_AT_INTERFACE: | |
1293 | case RID_AT_IMPLEMENTATION: | |
1294 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1295 | c_parser_objc_class_definition (parser, NULL_TREE); |
27bf414c | 1296 | break; |
49b91f05 | 1297 | case RID_AT_CLASS: |
27bf414c JM |
1298 | gcc_assert (c_dialect_objc ()); |
1299 | c_parser_objc_class_declaration (parser); | |
1300 | break; | |
1301 | case RID_AT_ALIAS: | |
1302 | gcc_assert (c_dialect_objc ()); | |
1303 | c_parser_objc_alias_declaration (parser); | |
1304 | break; | |
1305 | case RID_AT_PROTOCOL: | |
1306 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1307 | c_parser_objc_protocol_definition (parser, NULL_TREE); |
27bf414c | 1308 | break; |
668ea4b1 IS |
1309 | case RID_AT_PROPERTY: |
1310 | gcc_assert (c_dialect_objc ()); | |
f614132b | 1311 | c_parser_objc_at_property_declaration (parser); |
668ea4b1 | 1312 | break; |
da57d1b9 NP |
1313 | case RID_AT_SYNTHESIZE: |
1314 | gcc_assert (c_dialect_objc ()); | |
1315 | c_parser_objc_at_synthesize_declaration (parser); | |
1316 | break; | |
1317 | case RID_AT_DYNAMIC: | |
1318 | gcc_assert (c_dialect_objc ()); | |
1319 | c_parser_objc_at_dynamic_declaration (parser); | |
1320 | break; | |
27bf414c JM |
1321 | case RID_AT_END: |
1322 | gcc_assert (c_dialect_objc ()); | |
1323 | c_parser_consume_token (parser); | |
1324 | objc_finish_implementation (); | |
1325 | break; | |
1326 | default: | |
1327 | goto decl_or_fndef; | |
1328 | } | |
1329 | break; | |
1330 | case CPP_SEMICOLON: | |
b8698a0f | 1331 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 1332 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
1333 | c_parser_consume_token (parser); |
1334 | break; | |
bc4071dd | 1335 | case CPP_PRAGMA: |
6ec637a4 | 1336 | mark_valid_location_for_stdc_pragma (true); |
bc4071dd | 1337 | c_parser_pragma (parser, pragma_external); |
6ec637a4 | 1338 | mark_valid_location_for_stdc_pragma (false); |
bc4071dd | 1339 | break; |
27bf414c JM |
1340 | case CPP_PLUS: |
1341 | case CPP_MINUS: | |
1342 | if (c_dialect_objc ()) | |
1343 | { | |
1344 | c_parser_objc_method_definition (parser); | |
1345 | break; | |
1346 | } | |
1347 | /* Else fall through, and yield a syntax error trying to parse | |
1348 | as a declaration or function definition. */ | |
1349 | default: | |
1350 | decl_or_fndef: | |
c165dca7 IS |
1351 | /* A declaration or a function definition (or, in Objective-C, |
1352 | an @interface or @protocol with prefix attributes). We can | |
1353 | only tell which after parsing the declaration specifiers, if | |
1354 | any, and the first declarator. */ | |
f05b9d93 | 1355 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, NULL); |
27bf414c JM |
1356 | break; |
1357 | } | |
1358 | } | |
1359 | ||
1360 | /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99 | |
1361 | 6.7, 6.9.1). If FNDEF_OK is true, a function definition is | |
1362 | accepted; otherwise (old-style parameter declarations) only other | |
32912286 JM |
1363 | declarations are accepted. If STATIC_ASSERT_OK is true, a static |
1364 | assertion is accepted; otherwise (old-style parameter declarations) | |
1365 | it is not. If NESTED is true, we are inside a function or parsing | |
1366 | old-style parameter declarations; any functions encountered are | |
1367 | nested functions and declaration specifiers are required; otherwise | |
1368 | we are at top level and functions are normal functions and | |
1369 | declaration specifiers may be optional. If EMPTY_OK is true, empty | |
1370 | declarations are OK (subject to all other constraints); otherwise | |
1371 | (old-style parameter declarations) they are diagnosed. If | |
1372 | START_ATTR_OK is true, the declaration specifiers may start with | |
1373 | attributes; otherwise they may not. | |
f05b9d93 NP |
1374 | OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed |
1375 | declaration when parsing an Objective-C foreach statement. | |
27bf414c JM |
1376 | |
1377 | declaration: | |
1378 | declaration-specifiers init-declarator-list[opt] ; | |
32912286 | 1379 | static_assert-declaration |
27bf414c JM |
1380 | |
1381 | function-definition: | |
1382 | declaration-specifiers[opt] declarator declaration-list[opt] | |
1383 | compound-statement | |
1384 | ||
1385 | declaration-list: | |
1386 | declaration | |
1387 | declaration-list declaration | |
1388 | ||
1389 | init-declarator-list: | |
1390 | init-declarator | |
1391 | init-declarator-list , init-declarator | |
1392 | ||
1393 | init-declarator: | |
1394 | declarator simple-asm-expr[opt] attributes[opt] | |
1395 | declarator simple-asm-expr[opt] attributes[opt] = initializer | |
1396 | ||
1397 | GNU extensions: | |
1398 | ||
1399 | nested-function-definition: | |
1400 | declaration-specifiers declarator declaration-list[opt] | |
1401 | compound-statement | |
1402 | ||
c165dca7 IS |
1403 | Objective-C: |
1404 | attributes objc-class-definition | |
1405 | attributes objc-category-definition | |
1406 | attributes objc-protocol-definition | |
1407 | ||
27bf414c JM |
1408 | The simple-asm-expr and attributes are GNU extensions. |
1409 | ||
1410 | This function does not handle __extension__; that is handled in its | |
1411 | callers. ??? Following the old parser, __extension__ may start | |
1412 | external declarations, declarations in functions and declarations | |
1413 | at the start of "for" loops, but not old-style parameter | |
1414 | declarations. | |
1415 | ||
1416 | C99 requires declaration specifiers in a function definition; the | |
1417 | absence is diagnosed through the diagnosis of implicit int. In GNU | |
1418 | C we also allow but diagnose declarations without declaration | |
1419 | specifiers, but only at top level (elsewhere they conflict with | |
953ff289 | 1420 | other syntax). |
b8698a0f | 1421 | |
f05b9d93 NP |
1422 | In Objective-C, declarations of the looping variable in a foreach |
1423 | statement are exceptionally terminated by 'in' (for example, 'for | |
1424 | (NSObject *object in array) { ... }'). | |
1425 | ||
953ff289 | 1426 | OpenMP: |
b8698a0f | 1427 | |
953ff289 DN |
1428 | declaration: |
1429 | threadprivate-directive */ | |
27bf414c JM |
1430 | |
1431 | static void | |
32912286 JM |
1432 | c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, |
1433 | bool static_assert_ok, bool empty_ok, | |
f05b9d93 NP |
1434 | bool nested, bool start_attr_ok, |
1435 | tree *objc_foreach_object_declaration) | |
27bf414c JM |
1436 | { |
1437 | struct c_declspecs *specs; | |
1438 | tree prefix_attrs; | |
1439 | tree all_prefix_attrs; | |
1440 | bool diagnosed_no_specs = false; | |
c7412148 | 1441 | location_t here = c_parser_peek_token (parser)->location; |
bc4071dd | 1442 | |
32912286 JM |
1443 | if (static_assert_ok |
1444 | && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) | |
1445 | { | |
1446 | c_parser_static_assert_declaration (parser); | |
1447 | return; | |
1448 | } | |
27bf414c | 1449 | specs = build_null_declspecs (); |
2f413185 PB |
1450 | |
1451 | /* Try to detect an unknown type name when we have "A B" or "A *B". */ | |
1452 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
1453 | && c_parser_peek_token (parser)->id_kind == C_ID_ID | |
1454 | && (c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
1455 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
1456 | && (!nested || !lookup_name (c_parser_peek_token (parser)->value))) | |
1457 | { | |
1458 | error_at (here, "unknown type name %qE", | |
1459 | c_parser_peek_token (parser)->value); | |
1460 | ||
1461 | /* Parse declspecs normally to get a correct pointer type, but avoid | |
a5812bdc PB |
1462 | a further "fails to be a type name" error. Refuse nested functions |
1463 | since it is not how the user likely wants us to recover. */ | |
2f413185 PB |
1464 | c_parser_peek_token (parser)->type = CPP_KEYWORD; |
1465 | c_parser_peek_token (parser)->keyword = RID_VOID; | |
1466 | c_parser_peek_token (parser)->value = error_mark_node; | |
a5812bdc | 1467 | fndef_ok = !nested; |
2f413185 PB |
1468 | } |
1469 | ||
29ce73cb | 1470 | c_parser_declspecs (parser, specs, true, true, start_attr_ok, cla_nonabstract_decl); |
27bf414c JM |
1471 | if (parser->error) |
1472 | { | |
1473 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1474 | return; | |
1475 | } | |
1476 | if (nested && !specs->declspecs_seen_p) | |
1477 | { | |
1478 | c_parser_error (parser, "expected declaration specifiers"); | |
1479 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1480 | return; | |
1481 | } | |
1482 | finish_declspecs (specs); | |
1483 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1484 | { | |
1485 | if (empty_ok) | |
1486 | shadow_tag (specs); | |
1487 | else | |
1488 | { | |
1489 | shadow_tag_warned (specs, 1); | |
509c9d60 | 1490 | pedwarn (here, 0, "empty declaration"); |
27bf414c JM |
1491 | } |
1492 | c_parser_consume_token (parser); | |
1493 | return; | |
1494 | } | |
f725e721 PB |
1495 | |
1496 | /* Provide better error recovery. Note that a type name here is usually | |
1497 | better diagnosed as a redeclaration. */ | |
1498 | if (empty_ok | |
1499 | && specs->typespec_kind == ctsk_tagdef | |
1500 | && c_parser_next_token_starts_declspecs (parser) | |
1501 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
1502 | { | |
1503 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
1504 | parser->error = false; | |
1505 | shadow_tag_warned (specs, 1); | |
1506 | return; | |
1507 | } | |
c165dca7 IS |
1508 | else if (c_dialect_objc ()) |
1509 | { | |
f7e71da5 IS |
1510 | /* Prefix attributes are an error on method decls. */ |
1511 | switch (c_parser_peek_token (parser)->type) | |
1512 | { | |
1513 | case CPP_PLUS: | |
1514 | case CPP_MINUS: | |
1515 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1516 | return; | |
1517 | if (specs->attrs) | |
1518 | { | |
1519 | warning_at (c_parser_peek_token (parser)->location, | |
1520 | OPT_Wattributes, | |
1521 | "prefix attributes are ignored for methods"); | |
1522 | specs->attrs = NULL_TREE; | |
1523 | } | |
1524 | if (fndef_ok) | |
1525 | c_parser_objc_method_definition (parser); | |
1526 | else | |
1527 | c_parser_objc_methodproto (parser); | |
1528 | return; | |
1529 | break; | |
1530 | default: | |
1531 | break; | |
1532 | } | |
c165dca7 IS |
1533 | /* This is where we parse 'attributes @interface ...', |
1534 | 'attributes @implementation ...', 'attributes @protocol ...' | |
1535 | (where attributes could be, for example, __attribute__ | |
1536 | ((deprecated)). | |
1537 | */ | |
1538 | switch (c_parser_peek_token (parser)->keyword) | |
1539 | { | |
1540 | case RID_AT_INTERFACE: | |
1541 | { | |
1542 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1543 | return; | |
1544 | c_parser_objc_class_definition (parser, specs->attrs); | |
1545 | return; | |
1546 | } | |
1547 | break; | |
1548 | case RID_AT_IMPLEMENTATION: | |
1549 | { | |
1550 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1551 | return; | |
1552 | if (specs->attrs) | |
1553 | { | |
1554 | warning_at (c_parser_peek_token (parser)->location, | |
1555 | OPT_Wattributes, | |
1556 | "prefix attributes are ignored for implementations"); | |
1557 | specs->attrs = NULL_TREE; | |
1558 | } | |
1559 | c_parser_objc_class_definition (parser, NULL_TREE); | |
1560 | return; | |
1561 | } | |
1562 | break; | |
1563 | case RID_AT_PROTOCOL: | |
1564 | { | |
1565 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1566 | return; | |
1567 | c_parser_objc_protocol_definition (parser, specs->attrs); | |
1568 | return; | |
1569 | } | |
1570 | break; | |
668ea4b1 IS |
1571 | case RID_AT_ALIAS: |
1572 | case RID_AT_CLASS: | |
1573 | case RID_AT_END: | |
1574 | case RID_AT_PROPERTY: | |
1575 | if (specs->attrs) | |
1576 | { | |
96bbfbac | 1577 | c_parser_error (parser, "unexpected attribute"); |
668ea4b1 IS |
1578 | specs->attrs = NULL; |
1579 | } | |
1580 | break; | |
c165dca7 IS |
1581 | default: |
1582 | break; | |
1583 | } | |
1584 | } | |
1585 | ||
27bf414c JM |
1586 | pending_xref_error (); |
1587 | prefix_attrs = specs->attrs; | |
1588 | all_prefix_attrs = prefix_attrs; | |
1589 | specs->attrs = NULL_TREE; | |
1590 | while (true) | |
1591 | { | |
1592 | struct c_declarator *declarator; | |
1593 | bool dummy = false; | |
575bfb00 | 1594 | timevar_id_t tv; |
27bf414c JM |
1595 | tree fnbody; |
1596 | /* Declaring either one or more declarators (in which case we | |
1597 | should diagnose if there were no declaration specifiers) or a | |
1598 | function definition (in which case the diagnostic for | |
1599 | implicit int suffices). */ | |
9e5b2115 PB |
1600 | declarator = c_parser_declarator (parser, |
1601 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
1602 | C_DTR_NORMAL, &dummy); |
1603 | if (declarator == NULL) | |
1604 | { | |
1605 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1606 | return; | |
1607 | } | |
1608 | if (c_parser_next_token_is (parser, CPP_EQ) | |
1609 | || c_parser_next_token_is (parser, CPP_COMMA) | |
1610 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
1611 | || c_parser_next_token_is_keyword (parser, RID_ASM) | |
f05b9d93 NP |
1612 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE) |
1613 | || c_parser_next_token_is_keyword (parser, RID_IN)) | |
27bf414c JM |
1614 | { |
1615 | tree asm_name = NULL_TREE; | |
1616 | tree postfix_attrs = NULL_TREE; | |
1617 | if (!diagnosed_no_specs && !specs->declspecs_seen_p) | |
1618 | { | |
1619 | diagnosed_no_specs = true; | |
509c9d60 | 1620 | pedwarn (here, 0, "data definition has no type or storage class"); |
27bf414c JM |
1621 | } |
1622 | /* Having seen a data definition, there cannot now be a | |
1623 | function definition. */ | |
1624 | fndef_ok = false; | |
1625 | if (c_parser_next_token_is_keyword (parser, RID_ASM)) | |
1626 | asm_name = c_parser_simple_asm_expr (parser); | |
1627 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1628 | postfix_attrs = c_parser_attributes (parser); | |
1629 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
1630 | { | |
1631 | tree d; | |
1632 | struct c_expr init; | |
c2255bc4 | 1633 | location_t init_loc; |
27bf414c JM |
1634 | c_parser_consume_token (parser); |
1635 | /* The declaration of the variable is in effect while | |
1636 | its initializer is parsed. */ | |
1637 | d = start_decl (declarator, specs, true, | |
1638 | chainon (postfix_attrs, all_prefix_attrs)); | |
1639 | if (!d) | |
1640 | d = error_mark_node; | |
1641 | start_init (d, asm_name, global_bindings_p ()); | |
c2255bc4 | 1642 | init_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
1643 | init = c_parser_initializer (parser); |
1644 | finish_init (); | |
1645 | if (d != error_mark_node) | |
1646 | { | |
1647 | maybe_warn_string_init (TREE_TYPE (d), init); | |
c2255bc4 AH |
1648 | finish_decl (d, init_loc, init.value, |
1649 | init.original_type, asm_name); | |
27bf414c JM |
1650 | } |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | tree d = start_decl (declarator, specs, false, | |
1655 | chainon (postfix_attrs, | |
1656 | all_prefix_attrs)); | |
1657 | if (d) | |
c2255bc4 | 1658 | finish_decl (d, UNKNOWN_LOCATION, NULL_TREE, |
f05b9d93 NP |
1659 | NULL_TREE, asm_name); |
1660 | ||
1661 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
1662 | { | |
1663 | if (d) | |
1664 | *objc_foreach_object_declaration = d; | |
1665 | else | |
1666 | *objc_foreach_object_declaration = error_mark_node; | |
1667 | } | |
27bf414c JM |
1668 | } |
1669 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
1670 | { | |
1671 | c_parser_consume_token (parser); | |
1672 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1673 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
1674 | prefix_attrs); | |
1675 | else | |
1676 | all_prefix_attrs = prefix_attrs; | |
1677 | continue; | |
1678 | } | |
1679 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1680 | { | |
1681 | c_parser_consume_token (parser); | |
1682 | return; | |
1683 | } | |
f05b9d93 NP |
1684 | else if (c_parser_next_token_is_keyword (parser, RID_IN)) |
1685 | { | |
1686 | /* This can only happen in Objective-C: we found the | |
1687 | 'in' that terminates the declaration inside an | |
1688 | Objective-C foreach statement. Do not consume the | |
1689 | token, so that the caller can use it to determine | |
1690 | that this indeed is a foreach context. */ | |
1691 | return; | |
1692 | } | |
27bf414c JM |
1693 | else |
1694 | { | |
1695 | c_parser_error (parser, "expected %<,%> or %<;%>"); | |
1696 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1697 | return; | |
1698 | } | |
1699 | } | |
1700 | else if (!fndef_ok) | |
1701 | { | |
1702 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, " | |
1703 | "%<asm%> or %<__attribute__%>"); | |
1704 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1705 | return; | |
1706 | } | |
1707 | /* Function definition (nested or otherwise). */ | |
1708 | if (nested) | |
1709 | { | |
509c9d60 | 1710 | pedwarn (here, OPT_pedantic, "ISO C forbids nested functions"); |
d2784db4 | 1711 | c_push_function_context (); |
27bf414c JM |
1712 | } |
1713 | if (!start_function (specs, declarator, all_prefix_attrs)) | |
1714 | { | |
1715 | /* This can appear in many cases looking nothing like a | |
1716 | function definition, so we don't give a more specific | |
1717 | error suggesting there was one. */ | |
1718 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> " | |
1719 | "or %<__attribute__%>"); | |
1720 | if (nested) | |
d2784db4 | 1721 | c_pop_function_context (); |
27bf414c JM |
1722 | break; |
1723 | } | |
575bfb00 LC |
1724 | |
1725 | if (DECL_DECLARED_INLINE_P (current_function_decl)) | |
1726 | tv = TV_PARSE_INLINE; | |
1727 | else | |
1728 | tv = TV_PARSE_FUNC; | |
1729 | timevar_push (tv); | |
1730 | ||
27bf414c JM |
1731 | /* Parse old-style parameter declarations. ??? Attributes are |
1732 | not allowed to start declaration specifiers here because of a | |
1733 | syntax conflict between a function declaration with attribute | |
1734 | suffix and a function definition with an attribute prefix on | |
1735 | first old-style parameter declaration. Following the old | |
1736 | parser, they are not accepted on subsequent old-style | |
1737 | parameter declarations either. However, there is no | |
1738 | ambiguity after the first declaration, nor indeed on the | |
1739 | first as long as we don't allow postfix attributes after a | |
1740 | declarator with a nonempty identifier list in a definition; | |
1741 | and postfix attributes have never been accepted here in | |
1742 | function definitions either. */ | |
1743 | while (c_parser_next_token_is_not (parser, CPP_EOF) | |
1744 | && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE)) | |
32912286 | 1745 | c_parser_declaration_or_fndef (parser, false, false, false, |
f05b9d93 | 1746 | true, false, NULL); |
27bf414c | 1747 | store_parm_decls (); |
1751ecd6 AH |
1748 | DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus |
1749 | = c_parser_peek_token (parser)->location; | |
27bf414c JM |
1750 | fnbody = c_parser_compound_statement (parser); |
1751 | if (nested) | |
1752 | { | |
1753 | tree decl = current_function_decl; | |
9f62cb92 JJ |
1754 | /* Mark nested functions as needing static-chain initially. |
1755 | lower_nested_functions will recompute it but the | |
1756 | DECL_STATIC_CHAIN flag is also used before that happens, | |
1757 | by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */ | |
1758 | DECL_STATIC_CHAIN (decl) = 1; | |
27bf414c JM |
1759 | add_stmt (fnbody); |
1760 | finish_function (); | |
d2784db4 | 1761 | c_pop_function_context (); |
c2255bc4 | 1762 | add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl)); |
27bf414c JM |
1763 | } |
1764 | else | |
1765 | { | |
1766 | add_stmt (fnbody); | |
1767 | finish_function (); | |
1768 | } | |
575bfb00 LC |
1769 | |
1770 | timevar_pop (tv); | |
27bf414c JM |
1771 | break; |
1772 | } | |
1773 | } | |
1774 | ||
1775 | /* Parse an asm-definition (asm() outside a function body). This is a | |
1776 | GNU extension. | |
1777 | ||
1778 | asm-definition: | |
1779 | simple-asm-expr ; | |
1780 | */ | |
1781 | ||
1782 | static void | |
1783 | c_parser_asm_definition (c_parser *parser) | |
1784 | { | |
1785 | tree asm_str = c_parser_simple_asm_expr (parser); | |
27bf414c | 1786 | if (asm_str) |
474eccc6 | 1787 | cgraph_add_asm_node (asm_str); |
27bf414c JM |
1788 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
1789 | } | |
1790 | ||
32912286 JM |
1791 | /* Parse a static assertion (C1X N1425 6.7.10). |
1792 | ||
1793 | static_assert-declaration: | |
1794 | static_assert-declaration-no-semi ; | |
1795 | */ | |
1796 | ||
1797 | static void | |
1798 | c_parser_static_assert_declaration (c_parser *parser) | |
1799 | { | |
1800 | c_parser_static_assert_declaration_no_semi (parser); | |
1801 | if (parser->error | |
1802 | || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
1803 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1804 | } | |
1805 | ||
1806 | /* Parse a static assertion (C1X N1425 6.7.10), without the trailing | |
1807 | semicolon. | |
1808 | ||
1809 | static_assert-declaration-no-semi: | |
1810 | _Static_assert ( constant-expression , string-literal ) | |
1811 | */ | |
1812 | ||
1813 | static void | |
1814 | c_parser_static_assert_declaration_no_semi (c_parser *parser) | |
1815 | { | |
1816 | location_t assert_loc, value_loc; | |
1817 | tree value; | |
1818 | tree string; | |
1819 | ||
1820 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)); | |
1821 | assert_loc = c_parser_peek_token (parser)->location; | |
1822 | if (!flag_isoc1x) | |
1823 | { | |
1824 | if (flag_isoc99) | |
1825 | pedwarn (assert_loc, OPT_pedantic, | |
1826 | "ISO C99 does not support %<_Static_assert%>"); | |
1827 | else | |
1828 | pedwarn (assert_loc, OPT_pedantic, | |
1829 | "ISO C90 does not support %<_Static_assert%>"); | |
1830 | } | |
1831 | c_parser_consume_token (parser); | |
1832 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
1833 | return; | |
1834 | value_loc = c_parser_peek_token (parser)->location; | |
1835 | value = c_parser_expr_no_commas (parser, NULL).value; | |
1836 | parser->lex_untranslated_string = true; | |
1837 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
1838 | { | |
1839 | parser->lex_untranslated_string = false; | |
1840 | return; | |
1841 | } | |
1842 | switch (c_parser_peek_token (parser)->type) | |
1843 | { | |
1844 | case CPP_STRING: | |
1845 | case CPP_STRING16: | |
1846 | case CPP_STRING32: | |
1847 | case CPP_WSTRING: | |
1848 | case CPP_UTF8STRING: | |
1849 | string = c_parser_peek_token (parser)->value; | |
1850 | c_parser_consume_token (parser); | |
1851 | parser->lex_untranslated_string = false; | |
1852 | break; | |
1853 | default: | |
1854 | c_parser_error (parser, "expected string literal"); | |
1855 | parser->lex_untranslated_string = false; | |
1856 | return; | |
1857 | } | |
1858 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
1859 | ||
1860 | if (!INTEGRAL_TYPE_P (TREE_TYPE (value))) | |
1861 | { | |
1862 | error_at (value_loc, "expression in static assertion is not an integer"); | |
1863 | return; | |
1864 | } | |
1865 | if (TREE_CODE (value) != INTEGER_CST) | |
1866 | { | |
1867 | value = c_fully_fold (value, false, NULL); | |
1868 | if (TREE_CODE (value) == INTEGER_CST) | |
1869 | pedwarn (value_loc, OPT_pedantic, "expression in static assertion " | |
1870 | "is not an integer constant expression"); | |
1871 | } | |
1872 | if (TREE_CODE (value) != INTEGER_CST) | |
1873 | { | |
1874 | error_at (value_loc, "expression in static assertion is not constant"); | |
1875 | return; | |
1876 | } | |
1877 | constant_expression_warning (value); | |
1878 | if (integer_zerop (value)) | |
1879 | error_at (assert_loc, "static assertion failed: %E", string); | |
1880 | } | |
1881 | ||
27bf414c JM |
1882 | /* Parse some declaration specifiers (possibly none) (C90 6.5, C99 |
1883 | 6.7), adding them to SPECS (which may already include some). | |
1884 | Storage class specifiers are accepted iff SCSPEC_OK; type | |
1885 | specifiers are accepted iff TYPESPEC_OK; attributes are accepted at | |
1886 | the start iff START_ATTR_OK. | |
1887 | ||
1888 | declaration-specifiers: | |
1889 | storage-class-specifier declaration-specifiers[opt] | |
1890 | type-specifier declaration-specifiers[opt] | |
1891 | type-qualifier declaration-specifiers[opt] | |
1892 | function-specifier declaration-specifiers[opt] | |
1893 | ||
1894 | Function specifiers (inline) are from C99, and are currently | |
1895 | handled as storage class specifiers, as is __thread. | |
1896 | ||
1897 | C90 6.5.1, C99 6.7.1: | |
1898 | storage-class-specifier: | |
1899 | typedef | |
1900 | extern | |
1901 | static | |
1902 | auto | |
1903 | register | |
1904 | ||
1905 | C99 6.7.4: | |
1906 | function-specifier: | |
1907 | inline | |
c4b3a0a0 JM |
1908 | _Noreturn |
1909 | ||
1910 | (_Noreturn is new in C1X.) | |
27bf414c JM |
1911 | |
1912 | C90 6.5.2, C99 6.7.2: | |
1913 | type-specifier: | |
1914 | void | |
1915 | char | |
1916 | short | |
1917 | int | |
1918 | long | |
1919 | float | |
1920 | double | |
1921 | signed | |
1922 | unsigned | |
1923 | _Bool | |
1924 | _Complex | |
1925 | [_Imaginary removed in C99 TC2] | |
1926 | struct-or-union-specifier | |
1927 | enum-specifier | |
1928 | typedef-name | |
1929 | ||
1930 | (_Bool and _Complex are new in C99.) | |
1931 | ||
1932 | C90 6.5.3, C99 6.7.3: | |
1933 | ||
1934 | type-qualifier: | |
1935 | const | |
1936 | restrict | |
1937 | volatile | |
36c5e70a | 1938 | address-space-qualifier |
27bf414c JM |
1939 | |
1940 | (restrict is new in C99.) | |
1941 | ||
1942 | GNU extensions: | |
1943 | ||
1944 | declaration-specifiers: | |
1945 | attributes declaration-specifiers[opt] | |
1946 | ||
36c5e70a BE |
1947 | type-qualifier: |
1948 | address-space | |
1949 | ||
1950 | address-space: | |
1951 | identifier recognized by the target | |
1952 | ||
27bf414c JM |
1953 | storage-class-specifier: |
1954 | __thread | |
1955 | ||
1956 | type-specifier: | |
1957 | typeof-specifier | |
a6766312 | 1958 | __int128 |
9a8ce21f JG |
1959 | _Decimal32 |
1960 | _Decimal64 | |
1961 | _Decimal128 | |
ab22c1fa CF |
1962 | _Fract |
1963 | _Accum | |
1964 | _Sat | |
1965 | ||
1966 | (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037: | |
1967 | http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf) | |
27bf414c JM |
1968 | |
1969 | Objective-C: | |
1970 | ||
1971 | type-specifier: | |
1972 | class-name objc-protocol-refs[opt] | |
1973 | typedef-name objc-protocol-refs | |
1974 | objc-protocol-refs | |
1975 | */ | |
1976 | ||
1977 | static void | |
1978 | c_parser_declspecs (c_parser *parser, struct c_declspecs *specs, | |
29ce73cb PB |
1979 | bool scspec_ok, bool typespec_ok, bool start_attr_ok, |
1980 | enum c_lookahead_kind la) | |
27bf414c JM |
1981 | { |
1982 | bool attrs_ok = start_attr_ok; | |
9e5b2115 | 1983 | bool seen_type = specs->typespec_kind != ctsk_none; |
29ce73cb PB |
1984 | |
1985 | if (!typespec_ok) | |
1986 | gcc_assert (la == cla_prefer_id); | |
1987 | ||
1988 | while (c_parser_next_token_is (parser, CPP_NAME) | |
27bf414c JM |
1989 | || c_parser_next_token_is (parser, CPP_KEYWORD) |
1990 | || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS))) | |
1991 | { | |
1992 | struct c_typespec t; | |
1993 | tree attrs; | |
dc491a25 | 1994 | location_t loc = c_parser_peek_token (parser)->location; |
f725e721 | 1995 | |
29ce73cb PB |
1996 | /* If we cannot accept a type, exit if the next token must start |
1997 | one. Also, if we already have seen a tagged definition, | |
1998 | a typename would be an error anyway and likely the user | |
1999 | has simply forgotten a semicolon, so we exit. */ | |
2000 | if ((!typespec_ok || specs->typespec_kind == ctsk_tagdef) | |
2001 | && c_parser_next_tokens_start_typename (parser, la) | |
2002 | && !c_parser_next_token_is_qualifier (parser)) | |
2003 | break; | |
f725e721 | 2004 | |
27bf414c JM |
2005 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2006 | { | |
2007 | tree value = c_parser_peek_token (parser)->value; | |
2008 | c_id_kind kind = c_parser_peek_token (parser)->id_kind; | |
36c5e70a BE |
2009 | |
2010 | if (kind == C_ID_ADDRSPACE) | |
2011 | { | |
2012 | addr_space_t as | |
2013 | = c_parser_peek_token (parser)->keyword - RID_FIRST_ADDR_SPACE; | |
2014 | declspecs_add_addrspace (specs, as); | |
2015 | c_parser_consume_token (parser); | |
2016 | attrs_ok = true; | |
2017 | continue; | |
2018 | } | |
2019 | ||
29ce73cb PB |
2020 | gcc_assert (!c_parser_next_token_is_qualifier (parser)); |
2021 | ||
2022 | /* If we cannot accept a type, and the next token must start one, | |
2023 | exit. Do the same if we already have seen a tagged definition, | |
2024 | since it would be an error anyway and likely the user has simply | |
2025 | forgotten a semicolon. */ | |
2026 | if (seen_type || !c_parser_next_tokens_start_typename (parser, la)) | |
2027 | break; | |
2028 | ||
2029 | /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or | |
2030 | a C_ID_CLASSNAME. */ | |
27bf414c JM |
2031 | c_parser_consume_token (parser); |
2032 | seen_type = true; | |
2033 | attrs_ok = true; | |
29ce73cb PB |
2034 | if (kind == C_ID_ID) |
2035 | { | |
2036 | error ("unknown type name %qE", value); | |
2037 | t.kind = ctsk_typedef; | |
2038 | t.spec = error_mark_node; | |
2039 | } | |
2040 | else if (kind == C_ID_TYPENAME | |
2041 | && (!c_dialect_objc () | |
2042 | || c_parser_next_token_is_not (parser, CPP_LESS))) | |
27bf414c JM |
2043 | { |
2044 | t.kind = ctsk_typedef; | |
2045 | /* For a typedef name, record the meaning, not the name. | |
2046 | In case of 'foo foo, bar;'. */ | |
2047 | t.spec = lookup_name (value); | |
2048 | } | |
2049 | else | |
2050 | { | |
2051 | tree proto = NULL_TREE; | |
2052 | gcc_assert (c_dialect_objc ()); | |
2053 | t.kind = ctsk_objc; | |
2054 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2055 | proto = c_parser_objc_protocol_refs (parser); | |
2056 | t.spec = objc_get_protocol_qualified_type (value, proto); | |
2057 | } | |
29ce73cb PB |
2058 | t.expr = NULL_TREE; |
2059 | t.expr_const_operands = true; | |
dc491a25 | 2060 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2061 | continue; |
2062 | } | |
2063 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2064 | { | |
2065 | /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - | |
2066 | nisse@lysator.liu.se. */ | |
2067 | tree proto; | |
2068 | gcc_assert (c_dialect_objc ()); | |
2069 | if (!typespec_ok || seen_type) | |
2070 | break; | |
2071 | proto = c_parser_objc_protocol_refs (parser); | |
2072 | t.kind = ctsk_objc; | |
2073 | t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto); | |
928c19bb JM |
2074 | t.expr = NULL_TREE; |
2075 | t.expr_const_operands = true; | |
dc491a25 | 2076 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2077 | continue; |
2078 | } | |
2079 | gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD)); | |
2080 | switch (c_parser_peek_token (parser)->keyword) | |
2081 | { | |
2082 | case RID_STATIC: | |
2083 | case RID_EXTERN: | |
2084 | case RID_REGISTER: | |
2085 | case RID_TYPEDEF: | |
2086 | case RID_INLINE: | |
bbceee64 | 2087 | case RID_NORETURN: |
27bf414c JM |
2088 | case RID_AUTO: |
2089 | case RID_THREAD: | |
2090 | if (!scspec_ok) | |
2091 | goto out; | |
2092 | attrs_ok = true; | |
bbceee64 | 2093 | /* TODO: Distinguish between function specifiers (inline, noreturn) |
27bf414c JM |
2094 | and storage class specifiers, either here or in |
2095 | declspecs_add_scspec. */ | |
2096 | declspecs_add_scspec (specs, c_parser_peek_token (parser)->value); | |
2097 | c_parser_consume_token (parser); | |
2098 | break; | |
2099 | case RID_UNSIGNED: | |
2100 | case RID_LONG: | |
a6766312 | 2101 | case RID_INT128: |
27bf414c JM |
2102 | case RID_SHORT: |
2103 | case RID_SIGNED: | |
2104 | case RID_COMPLEX: | |
2105 | case RID_INT: | |
2106 | case RID_CHAR: | |
2107 | case RID_FLOAT: | |
2108 | case RID_DOUBLE: | |
2109 | case RID_VOID: | |
9a8ce21f JG |
2110 | case RID_DFLOAT32: |
2111 | case RID_DFLOAT64: | |
2112 | case RID_DFLOAT128: | |
27bf414c | 2113 | case RID_BOOL: |
ab22c1fa CF |
2114 | case RID_FRACT: |
2115 | case RID_ACCUM: | |
2116 | case RID_SAT: | |
27bf414c JM |
2117 | if (!typespec_ok) |
2118 | goto out; | |
2119 | attrs_ok = true; | |
2120 | seen_type = true; | |
0bacb8c7 TT |
2121 | if (c_dialect_objc ()) |
2122 | parser->objc_need_raw_identifier = true; | |
27bf414c JM |
2123 | t.kind = ctsk_resword; |
2124 | t.spec = c_parser_peek_token (parser)->value; | |
928c19bb JM |
2125 | t.expr = NULL_TREE; |
2126 | t.expr_const_operands = true; | |
dc491a25 | 2127 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2128 | c_parser_consume_token (parser); |
2129 | break; | |
2130 | case RID_ENUM: | |
2131 | if (!typespec_ok) | |
2132 | goto out; | |
2133 | attrs_ok = true; | |
2134 | seen_type = true; | |
2135 | t = c_parser_enum_specifier (parser); | |
dc491a25 | 2136 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2137 | break; |
2138 | case RID_STRUCT: | |
2139 | case RID_UNION: | |
2140 | if (!typespec_ok) | |
2141 | goto out; | |
2142 | attrs_ok = true; | |
2143 | seen_type = true; | |
2144 | t = c_parser_struct_or_union_specifier (parser); | |
dab71827 | 2145 | invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec); |
dc491a25 | 2146 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2147 | break; |
2148 | case RID_TYPEOF: | |
2149 | /* ??? The old parser rejected typeof after other type | |
2150 | specifiers, but is a syntax error the best way of | |
2151 | handling this? */ | |
2152 | if (!typespec_ok || seen_type) | |
2153 | goto out; | |
2154 | attrs_ok = true; | |
2155 | seen_type = true; | |
2156 | t = c_parser_typeof_specifier (parser); | |
dc491a25 | 2157 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2158 | break; |
2159 | case RID_CONST: | |
2160 | case RID_VOLATILE: | |
2161 | case RID_RESTRICT: | |
2162 | attrs_ok = true; | |
2163 | declspecs_add_qual (specs, c_parser_peek_token (parser)->value); | |
2164 | c_parser_consume_token (parser); | |
2165 | break; | |
2166 | case RID_ATTRIBUTE: | |
2167 | if (!attrs_ok) | |
2168 | goto out; | |
2169 | attrs = c_parser_attributes (parser); | |
2170 | declspecs_add_attrs (specs, attrs); | |
2171 | break; | |
2172 | default: | |
2173 | goto out; | |
2174 | } | |
2175 | } | |
2176 | out: ; | |
2177 | } | |
2178 | ||
2179 | /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2). | |
2180 | ||
2181 | enum-specifier: | |
2182 | enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt] | |
2183 | enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt] | |
2184 | enum attributes[opt] identifier | |
2185 | ||
2186 | The form with trailing comma is new in C99. The forms with | |
2187 | attributes are GNU extensions. In GNU C, we accept any expression | |
2188 | without commas in the syntax (assignment expressions, not just | |
2189 | conditional expressions); assignment expressions will be diagnosed | |
2190 | as non-constant. | |
2191 | ||
2192 | enumerator-list: | |
2193 | enumerator | |
2194 | enumerator-list , enumerator | |
2195 | ||
2196 | enumerator: | |
2197 | enumeration-constant | |
2198 | enumeration-constant = constant-expression | |
2199 | */ | |
2200 | ||
2201 | static struct c_typespec | |
2202 | c_parser_enum_specifier (c_parser *parser) | |
2203 | { | |
2204 | struct c_typespec ret; | |
2205 | tree attrs; | |
2206 | tree ident = NULL_TREE; | |
24b97832 | 2207 | location_t enum_loc; |
922f2908 | 2208 | location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c | 2209 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM)); |
24b97832 | 2210 | enum_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2211 | c_parser_consume_token (parser); |
2212 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2213 | enum_loc = c_parser_peek_token (parser)->location; |
5af28c74 TT |
2214 | /* Set the location in case we create a decl now. */ |
2215 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
27bf414c JM |
2216 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2217 | { | |
2218 | ident = c_parser_peek_token (parser)->value; | |
c7412148 | 2219 | ident_loc = c_parser_peek_token (parser)->location; |
24b97832 | 2220 | enum_loc = ident_loc; |
27bf414c JM |
2221 | c_parser_consume_token (parser); |
2222 | } | |
2223 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2224 | { | |
2225 | /* Parse an enum definition. */ | |
7114359f | 2226 | struct c_enum_contents the_enum; |
575bfb00 | 2227 | tree type; |
27bf414c JM |
2228 | tree postfix_attrs; |
2229 | /* We chain the enumerators in reverse order, then put them in | |
2230 | forward order at the end. */ | |
575bfb00 LC |
2231 | tree values; |
2232 | timevar_push (TV_PARSE_ENUM); | |
2233 | type = start_enum (enum_loc, &the_enum, ident); | |
2234 | values = NULL_TREE; | |
27bf414c JM |
2235 | c_parser_consume_token (parser); |
2236 | while (true) | |
2237 | { | |
2238 | tree enum_id; | |
2239 | tree enum_value; | |
2240 | tree enum_decl; | |
2241 | bool seen_comma; | |
5af28c74 | 2242 | c_token *token; |
922f2908 | 2243 | location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
7370e0da | 2244 | location_t decl_loc, value_loc; |
27bf414c JM |
2245 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
2246 | { | |
2247 | c_parser_error (parser, "expected identifier"); | |
2248 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2249 | values = error_mark_node; | |
2250 | break; | |
2251 | } | |
5af28c74 TT |
2252 | token = c_parser_peek_token (parser); |
2253 | enum_id = token->value; | |
2254 | /* Set the location in case we create a decl now. */ | |
2255 | c_parser_set_source_position_from_token (token); | |
7370e0da | 2256 | decl_loc = value_loc = token->location; |
27bf414c JM |
2257 | c_parser_consume_token (parser); |
2258 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
2259 | { | |
2260 | c_parser_consume_token (parser); | |
85790e66 | 2261 | value_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2262 | enum_value = c_parser_expr_no_commas (parser, NULL).value; |
2263 | } | |
2264 | else | |
2265 | enum_value = NULL_TREE; | |
7370e0da | 2266 | enum_decl = build_enumerator (decl_loc, value_loc, |
c2255bc4 | 2267 | &the_enum, enum_id, enum_value); |
27bf414c JM |
2268 | TREE_CHAIN (enum_decl) = values; |
2269 | values = enum_decl; | |
2270 | seen_comma = false; | |
2271 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2272 | { | |
c7412148 | 2273 | comma_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2274 | seen_comma = true; |
2275 | c_parser_consume_token (parser); | |
2276 | } | |
2277 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2278 | { | |
fcf73884 | 2279 | if (seen_comma && !flag_isoc99) |
509c9d60 | 2280 | pedwarn (comma_loc, OPT_pedantic, "comma at end of enumerator list"); |
27bf414c JM |
2281 | c_parser_consume_token (parser); |
2282 | break; | |
2283 | } | |
2284 | if (!seen_comma) | |
2285 | { | |
2286 | c_parser_error (parser, "expected %<,%> or %<}%>"); | |
2287 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2288 | values = error_mark_node; | |
2289 | break; | |
2290 | } | |
2291 | } | |
2292 | postfix_attrs = c_parser_attributes (parser); | |
2293 | ret.spec = finish_enum (type, nreverse (values), | |
2294 | chainon (attrs, postfix_attrs)); | |
2295 | ret.kind = ctsk_tagdef; | |
928c19bb JM |
2296 | ret.expr = NULL_TREE; |
2297 | ret.expr_const_operands = true; | |
575bfb00 | 2298 | timevar_pop (TV_PARSE_ENUM); |
27bf414c JM |
2299 | return ret; |
2300 | } | |
2301 | else if (!ident) | |
2302 | { | |
2303 | c_parser_error (parser, "expected %<{%>"); | |
2304 | ret.spec = error_mark_node; | |
2305 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2306 | ret.expr = NULL_TREE; |
2307 | ret.expr_const_operands = true; | |
27bf414c JM |
2308 | return ret; |
2309 | } | |
c2255bc4 | 2310 | ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident); |
27bf414c JM |
2311 | /* In ISO C, enumerated types can be referred to only if already |
2312 | defined. */ | |
2313 | if (pedantic && !COMPLETE_TYPE_P (ret.spec)) | |
c7412148 TT |
2314 | { |
2315 | gcc_assert (ident); | |
c2255bc4 | 2316 | pedwarn (enum_loc, OPT_pedantic, |
509c9d60 | 2317 | "ISO C forbids forward references to %<enum%> types"); |
c7412148 | 2318 | } |
27bf414c JM |
2319 | return ret; |
2320 | } | |
2321 | ||
2322 | /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1). | |
2323 | ||
2324 | struct-or-union-specifier: | |
2325 | struct-or-union attributes[opt] identifier[opt] | |
2326 | { struct-contents } attributes[opt] | |
2327 | struct-or-union attributes[opt] identifier | |
2328 | ||
2329 | struct-contents: | |
2330 | struct-declaration-list | |
2331 | ||
2332 | struct-declaration-list: | |
2333 | struct-declaration ; | |
2334 | struct-declaration-list struct-declaration ; | |
2335 | ||
2336 | GNU extensions: | |
2337 | ||
2338 | struct-contents: | |
2339 | empty | |
2340 | struct-declaration | |
2341 | struct-declaration-list struct-declaration | |
2342 | ||
2343 | struct-declaration-list: | |
2344 | struct-declaration-list ; | |
2345 | ; | |
2346 | ||
2347 | (Note that in the syntax here, unlike that in ISO C, the semicolons | |
2348 | are included here rather than in struct-declaration, in order to | |
2349 | describe the syntax with extra semicolons and missing semicolon at | |
2350 | end.) | |
2351 | ||
2352 | Objective-C: | |
2353 | ||
2354 | struct-declaration-list: | |
2355 | @defs ( class-name ) | |
2356 | ||
2357 | (Note this does not include a trailing semicolon, but can be | |
2358 | followed by further declarations, and gets a pedwarn-if-pedantic | |
2359 | when followed by a semicolon.) */ | |
2360 | ||
2361 | static struct c_typespec | |
2362 | c_parser_struct_or_union_specifier (c_parser *parser) | |
2363 | { | |
2364 | struct c_typespec ret; | |
2365 | tree attrs; | |
2366 | tree ident = NULL_TREE; | |
24b97832 ILT |
2367 | location_t struct_loc; |
2368 | location_t ident_loc = UNKNOWN_LOCATION; | |
27bf414c JM |
2369 | enum tree_code code; |
2370 | switch (c_parser_peek_token (parser)->keyword) | |
2371 | { | |
2372 | case RID_STRUCT: | |
2373 | code = RECORD_TYPE; | |
2374 | break; | |
2375 | case RID_UNION: | |
2376 | code = UNION_TYPE; | |
2377 | break; | |
2378 | default: | |
2379 | gcc_unreachable (); | |
2380 | } | |
24b97832 | 2381 | struct_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2382 | c_parser_consume_token (parser); |
2383 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2384 | |
5af28c74 TT |
2385 | /* Set the location in case we create a decl now. */ |
2386 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
c2255bc4 | 2387 | |
27bf414c JM |
2388 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2389 | { | |
2390 | ident = c_parser_peek_token (parser)->value; | |
24b97832 ILT |
2391 | ident_loc = c_parser_peek_token (parser)->location; |
2392 | struct_loc = ident_loc; | |
27bf414c JM |
2393 | c_parser_consume_token (parser); |
2394 | } | |
2395 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2396 | { | |
2397 | /* Parse a struct or union definition. Start the scope of the | |
2398 | tag before parsing components. */ | |
dc491a25 ILT |
2399 | struct c_struct_parse_info *struct_info; |
2400 | tree type = start_struct (struct_loc, code, ident, &struct_info); | |
27bf414c JM |
2401 | tree postfix_attrs; |
2402 | /* We chain the components in reverse order, then put them in | |
2403 | forward order at the end. Each struct-declaration may | |
2404 | declare multiple components (comma-separated), so we must use | |
2405 | chainon to join them, although when parsing each | |
2406 | struct-declaration we can use TREE_CHAIN directly. | |
2407 | ||
2408 | The theory behind all this is that there will be more | |
2409 | semicolon separated fields than comma separated fields, and | |
2410 | so we'll be minimizing the number of node traversals required | |
2411 | by chainon. */ | |
575bfb00 LC |
2412 | tree contents; |
2413 | timevar_push (TV_PARSE_STRUCT); | |
2414 | contents = NULL_TREE; | |
27bf414c JM |
2415 | c_parser_consume_token (parser); |
2416 | /* Handle the Objective-C @defs construct, | |
2417 | e.g. foo(sizeof(struct{ @defs(ClassName) }));. */ | |
2418 | if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS)) | |
2419 | { | |
2420 | tree name; | |
2421 | gcc_assert (c_dialect_objc ()); | |
2422 | c_parser_consume_token (parser); | |
2423 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2424 | goto end_at_defs; | |
2425 | if (c_parser_next_token_is (parser, CPP_NAME) | |
2426 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME) | |
2427 | { | |
2428 | name = c_parser_peek_token (parser)->value; | |
2429 | c_parser_consume_token (parser); | |
2430 | } | |
2431 | else | |
2432 | { | |
2433 | c_parser_error (parser, "expected class name"); | |
2434 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
2435 | goto end_at_defs; | |
2436 | } | |
2437 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2438 | "expected %<)%>"); | |
2439 | contents = nreverse (objc_get_class_ivars (name)); | |
2440 | } | |
2441 | end_at_defs: | |
2442 | /* Parse the struct-declarations and semicolons. Problems with | |
2443 | semicolons are diagnosed here; empty structures are diagnosed | |
2444 | elsewhere. */ | |
2445 | while (true) | |
2446 | { | |
2447 | tree decls; | |
2448 | /* Parse any stray semicolon. */ | |
2449 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2450 | { | |
b8698a0f | 2451 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 2452 | "extra semicolon in struct or union specified"); |
27bf414c JM |
2453 | c_parser_consume_token (parser); |
2454 | continue; | |
2455 | } | |
2456 | /* Stop if at the end of the struct or union contents. */ | |
2457 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2458 | { | |
2459 | c_parser_consume_token (parser); | |
2460 | break; | |
2461 | } | |
bc4071dd RH |
2462 | /* Accept #pragmas at struct scope. */ |
2463 | if (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
2464 | { | |
2465 | c_parser_pragma (parser, pragma_external); | |
2466 | continue; | |
2467 | } | |
27bf414c JM |
2468 | /* Parse some comma-separated declarations, but not the |
2469 | trailing semicolon if any. */ | |
2470 | decls = c_parser_struct_declaration (parser); | |
2471 | contents = chainon (decls, contents); | |
2472 | /* If no semicolon follows, either we have a parse error or | |
2473 | are at the end of the struct or union and should | |
2474 | pedwarn. */ | |
2475 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2476 | c_parser_consume_token (parser); | |
2477 | else | |
2478 | { | |
2479 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
b8698a0f | 2480 | pedwarn (c_parser_peek_token (parser)->location, 0, |
509c9d60 | 2481 | "no semicolon at end of struct or union"); |
f725e721 PB |
2482 | else if (parser->error |
2483 | || !c_parser_next_token_starts_declspecs (parser)) | |
27bf414c JM |
2484 | { |
2485 | c_parser_error (parser, "expected %<;%>"); | |
2486 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2487 | break; | |
2488 | } | |
f725e721 PB |
2489 | |
2490 | /* If we come here, we have already emitted an error | |
2491 | for an expected `;', identifier or `(', and we also | |
2492 | recovered already. Go on with the next field. */ | |
27bf414c JM |
2493 | } |
2494 | } | |
2495 | postfix_attrs = c_parser_attributes (parser); | |
c2255bc4 | 2496 | ret.spec = finish_struct (struct_loc, type, nreverse (contents), |
dc491a25 | 2497 | chainon (attrs, postfix_attrs), struct_info); |
27bf414c | 2498 | ret.kind = ctsk_tagdef; |
928c19bb JM |
2499 | ret.expr = NULL_TREE; |
2500 | ret.expr_const_operands = true; | |
575bfb00 | 2501 | timevar_pop (TV_PARSE_STRUCT); |
27bf414c JM |
2502 | return ret; |
2503 | } | |
2504 | else if (!ident) | |
2505 | { | |
2506 | c_parser_error (parser, "expected %<{%>"); | |
2507 | ret.spec = error_mark_node; | |
2508 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2509 | ret.expr = NULL_TREE; |
2510 | ret.expr_const_operands = true; | |
67c2939d | 2511 | return ret; |
27bf414c | 2512 | } |
c2255bc4 | 2513 | ret = parser_xref_tag (ident_loc, code, ident); |
27bf414c JM |
2514 | return ret; |
2515 | } | |
2516 | ||
2517 | /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without* | |
2518 | the trailing semicolon. | |
2519 | ||
2520 | struct-declaration: | |
2521 | specifier-qualifier-list struct-declarator-list | |
32912286 | 2522 | static_assert-declaration-no-semi |
27bf414c JM |
2523 | |
2524 | specifier-qualifier-list: | |
2525 | type-specifier specifier-qualifier-list[opt] | |
2526 | type-qualifier specifier-qualifier-list[opt] | |
2527 | attributes specifier-qualifier-list[opt] | |
2528 | ||
2529 | struct-declarator-list: | |
2530 | struct-declarator | |
2531 | struct-declarator-list , attributes[opt] struct-declarator | |
2532 | ||
2533 | struct-declarator: | |
2534 | declarator attributes[opt] | |
2535 | declarator[opt] : constant-expression attributes[opt] | |
2536 | ||
2537 | GNU extensions: | |
2538 | ||
2539 | struct-declaration: | |
2540 | __extension__ struct-declaration | |
2541 | specifier-qualifier-list | |
2542 | ||
2543 | Unlike the ISO C syntax, semicolons are handled elsewhere. The use | |
2544 | of attributes where shown is a GNU extension. In GNU C, we accept | |
2545 | any expression without commas in the syntax (assignment | |
2546 | expressions, not just conditional expressions); assignment | |
2547 | expressions will be diagnosed as non-constant. */ | |
2548 | ||
2549 | static tree | |
2550 | c_parser_struct_declaration (c_parser *parser) | |
2551 | { | |
2552 | struct c_declspecs *specs; | |
2553 | tree prefix_attrs; | |
2554 | tree all_prefix_attrs; | |
2555 | tree decls; | |
c7412148 | 2556 | location_t decl_loc; |
27bf414c JM |
2557 | if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) |
2558 | { | |
2559 | int ext; | |
2560 | tree decl; | |
2561 | ext = disable_extension_diagnostics (); | |
2562 | c_parser_consume_token (parser); | |
2563 | decl = c_parser_struct_declaration (parser); | |
2564 | restore_extension_diagnostics (ext); | |
2565 | return decl; | |
2566 | } | |
32912286 JM |
2567 | if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) |
2568 | { | |
2569 | c_parser_static_assert_declaration_no_semi (parser); | |
2570 | return NULL_TREE; | |
2571 | } | |
27bf414c | 2572 | specs = build_null_declspecs (); |
c7412148 | 2573 | decl_loc = c_parser_peek_token (parser)->location; |
29ce73cb | 2574 | c_parser_declspecs (parser, specs, false, true, true, cla_nonabstract_decl); |
27bf414c | 2575 | if (parser->error) |
67c2939d | 2576 | return NULL_TREE; |
27bf414c JM |
2577 | if (!specs->declspecs_seen_p) |
2578 | { | |
2579 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
2580 | return NULL_TREE; | |
2581 | } | |
2582 | finish_declspecs (specs); | |
b8cbdff5 JM |
2583 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) |
2584 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
27bf414c JM |
2585 | { |
2586 | tree ret; | |
9e5b2115 | 2587 | if (specs->typespec_kind == ctsk_none) |
27bf414c | 2588 | { |
b8698a0f | 2589 | pedwarn (decl_loc, OPT_pedantic, |
509c9d60 | 2590 | "ISO C forbids member declarations with no members"); |
27bf414c JM |
2591 | shadow_tag_warned (specs, pedantic); |
2592 | ret = NULL_TREE; | |
2593 | } | |
2594 | else | |
2595 | { | |
2596 | /* Support for unnamed structs or unions as members of | |
2597 | structs or unions (which is [a] useful and [b] supports | |
2598 | MS P-SDK). */ | |
b9baeecd | 2599 | tree attrs = NULL; |
3d10ed6c AH |
2600 | |
2601 | ret = grokfield (c_parser_peek_token (parser)->location, | |
2602 | build_id_declarator (NULL_TREE), specs, | |
b9baeecd | 2603 | NULL_TREE, &attrs); |
0ad7e054 RS |
2604 | if (ret) |
2605 | decl_attributes (&ret, attrs, 0); | |
27bf414c JM |
2606 | } |
2607 | return ret; | |
2608 | } | |
f725e721 PB |
2609 | |
2610 | /* Provide better error recovery. Note that a type name here is valid, | |
2611 | and will be treated as a field name. */ | |
2612 | if (specs->typespec_kind == ctsk_tagdef | |
2613 | && TREE_CODE (specs->type) != ENUMERAL_TYPE | |
2614 | && c_parser_next_token_starts_declspecs (parser) | |
2615 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
2616 | { | |
2617 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
2618 | parser->error = false; | |
2619 | return NULL_TREE; | |
2620 | } | |
2621 | ||
27bf414c JM |
2622 | pending_xref_error (); |
2623 | prefix_attrs = specs->attrs; | |
2624 | all_prefix_attrs = prefix_attrs; | |
2625 | specs->attrs = NULL_TREE; | |
2626 | decls = NULL_TREE; | |
2627 | while (true) | |
2628 | { | |
2629 | /* Declaring one or more declarators or un-named bit-fields. */ | |
2630 | struct c_declarator *declarator; | |
2631 | bool dummy = false; | |
2632 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2633 | declarator = build_id_declarator (NULL_TREE); | |
2634 | else | |
9e5b2115 PB |
2635 | declarator = c_parser_declarator (parser, |
2636 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
2637 | C_DTR_NORMAL, &dummy); |
2638 | if (declarator == NULL) | |
2639 | { | |
2640 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2641 | break; | |
2642 | } | |
2643 | if (c_parser_next_token_is (parser, CPP_COLON) | |
2644 | || c_parser_next_token_is (parser, CPP_COMMA) | |
2645 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2646 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE) | |
2647 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2648 | { | |
2649 | tree postfix_attrs = NULL_TREE; | |
2650 | tree width = NULL_TREE; | |
2651 | tree d; | |
2652 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2653 | { | |
2654 | c_parser_consume_token (parser); | |
2655 | width = c_parser_expr_no_commas (parser, NULL).value; | |
2656 | } | |
2657 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2658 | postfix_attrs = c_parser_attributes (parser); | |
3d10ed6c AH |
2659 | d = grokfield (c_parser_peek_token (parser)->location, |
2660 | declarator, specs, width, &all_prefix_attrs); | |
27bf414c JM |
2661 | decl_attributes (&d, chainon (postfix_attrs, |
2662 | all_prefix_attrs), 0); | |
910ad8de | 2663 | DECL_CHAIN (d) = decls; |
27bf414c JM |
2664 | decls = d; |
2665 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2666 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
2667 | prefix_attrs); | |
2668 | else | |
2669 | all_prefix_attrs = prefix_attrs; | |
2670 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2671 | c_parser_consume_token (parser); | |
2672 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2673 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2674 | { | |
2675 | /* Semicolon consumed in caller. */ | |
2676 | break; | |
2677 | } | |
2678 | else | |
2679 | { | |
2680 | c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>"); | |
2681 | break; | |
2682 | } | |
2683 | } | |
2684 | else | |
2685 | { | |
2686 | c_parser_error (parser, | |
2687 | "expected %<:%>, %<,%>, %<;%>, %<}%> or " | |
2688 | "%<__attribute__%>"); | |
2689 | break; | |
2690 | } | |
2691 | } | |
2692 | return decls; | |
2693 | } | |
2694 | ||
2695 | /* Parse a typeof specifier (a GNU extension). | |
2696 | ||
2697 | typeof-specifier: | |
2698 | typeof ( expression ) | |
2699 | typeof ( type-name ) | |
2700 | */ | |
2701 | ||
2702 | static struct c_typespec | |
2703 | c_parser_typeof_specifier (c_parser *parser) | |
2704 | { | |
2705 | struct c_typespec ret; | |
2706 | ret.kind = ctsk_typeof; | |
2707 | ret.spec = error_mark_node; | |
928c19bb JM |
2708 | ret.expr = NULL_TREE; |
2709 | ret.expr_const_operands = true; | |
27bf414c JM |
2710 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF)); |
2711 | c_parser_consume_token (parser); | |
7d882b83 | 2712 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
2713 | in_typeof++; |
2714 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2715 | { | |
7d882b83 | 2716 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2717 | in_typeof--; |
2718 | return ret; | |
2719 | } | |
29ce73cb | 2720 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) |
27bf414c JM |
2721 | { |
2722 | struct c_type_name *type = c_parser_type_name (parser); | |
7d882b83 | 2723 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2724 | in_typeof--; |
2725 | if (type != NULL) | |
2726 | { | |
928c19bb | 2727 | ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands); |
27bf414c JM |
2728 | pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE)); |
2729 | } | |
2730 | } | |
2731 | else | |
2732 | { | |
52ffd86e | 2733 | bool was_vm; |
c7412148 | 2734 | location_t here = c_parser_peek_token (parser)->location; |
27bf414c | 2735 | struct c_expr expr = c_parser_expression (parser); |
7d882b83 | 2736 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2737 | in_typeof--; |
2738 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
2739 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 2740 | error_at (here, "%<typeof%> applied to a bit-field"); |
ebfbbdc5 | 2741 | mark_exp_read (expr.value); |
27bf414c | 2742 | ret.spec = TREE_TYPE (expr.value); |
52ffd86e | 2743 | was_vm = variably_modified_type_p (ret.spec, NULL_TREE); |
928c19bb JM |
2744 | /* This is returned with the type so that when the type is |
2745 | evaluated, this can be evaluated. */ | |
2746 | if (was_vm) | |
2747 | ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands); | |
52ffd86e | 2748 | pop_maybe_used (was_vm); |
27bf414c JM |
2749 | } |
2750 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2751 | return ret; | |
2752 | } | |
2753 | ||
2754 | /* Parse a declarator, possibly an abstract declarator (C90 6.5.4, | |
2755 | 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may | |
2756 | be redeclared; otherwise it may not. KIND indicates which kind of | |
2757 | declarator is wanted. Returns a valid declarator except in the | |
2758 | case of a syntax error in which case NULL is returned. *SEEN_ID is | |
2759 | set to true if an identifier being declared is seen; this is used | |
2760 | to diagnose bad forms of abstract array declarators and to | |
2761 | determine whether an identifier list is syntactically permitted. | |
2762 | ||
2763 | declarator: | |
2764 | pointer[opt] direct-declarator | |
2765 | ||
2766 | direct-declarator: | |
2767 | identifier | |
2768 | ( attributes[opt] declarator ) | |
2769 | direct-declarator array-declarator | |
2770 | direct-declarator ( parameter-type-list ) | |
2771 | direct-declarator ( identifier-list[opt] ) | |
2772 | ||
2773 | pointer: | |
2774 | * type-qualifier-list[opt] | |
2775 | * type-qualifier-list[opt] pointer | |
2776 | ||
2777 | type-qualifier-list: | |
2778 | type-qualifier | |
2779 | attributes | |
2780 | type-qualifier-list type-qualifier | |
2781 | type-qualifier-list attributes | |
2782 | ||
2783 | parameter-type-list: | |
2784 | parameter-list | |
2785 | parameter-list , ... | |
2786 | ||
2787 | parameter-list: | |
2788 | parameter-declaration | |
2789 | parameter-list , parameter-declaration | |
2790 | ||
2791 | parameter-declaration: | |
2792 | declaration-specifiers declarator attributes[opt] | |
2793 | declaration-specifiers abstract-declarator[opt] attributes[opt] | |
2794 | ||
2795 | identifier-list: | |
2796 | identifier | |
2797 | identifier-list , identifier | |
2798 | ||
2799 | abstract-declarator: | |
2800 | pointer | |
2801 | pointer[opt] direct-abstract-declarator | |
2802 | ||
2803 | direct-abstract-declarator: | |
2804 | ( attributes[opt] abstract-declarator ) | |
2805 | direct-abstract-declarator[opt] array-declarator | |
2806 | direct-abstract-declarator[opt] ( parameter-type-list[opt] ) | |
2807 | ||
2808 | GNU extensions: | |
2809 | ||
2810 | direct-declarator: | |
2811 | direct-declarator ( parameter-forward-declarations | |
2812 | parameter-type-list[opt] ) | |
2813 | ||
2814 | direct-abstract-declarator: | |
c22cacf3 | 2815 | direct-abstract-declarator[opt] ( parameter-forward-declarations |
27bf414c JM |
2816 | parameter-type-list[opt] ) |
2817 | ||
2818 | parameter-forward-declarations: | |
2819 | parameter-list ; | |
2820 | parameter-forward-declarations parameter-list ; | |
2821 | ||
2822 | The uses of attributes shown above are GNU extensions. | |
2823 | ||
2824 | Some forms of array declarator are not included in C99 in the | |
2825 | syntax for abstract declarators; these are disallowed elsewhere. | |
2826 | This may be a defect (DR#289). | |
2827 | ||
2828 | This function also accepts an omitted abstract declarator as being | |
2829 | an abstract declarator, although not part of the formal syntax. */ | |
2830 | ||
2831 | static struct c_declarator * | |
2832 | c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2833 | bool *seen_id) | |
2834 | { | |
2835 | /* Parse any initial pointer part. */ | |
2836 | if (c_parser_next_token_is (parser, CPP_MULT)) | |
2837 | { | |
2838 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
2839 | struct c_declarator *inner; | |
2840 | c_parser_consume_token (parser); | |
29ce73cb | 2841 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
2842 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); |
2843 | if (inner == NULL) | |
2844 | return NULL; | |
2845 | else | |
2846 | return make_pointer_declarator (quals_attrs, inner); | |
2847 | } | |
2848 | /* Now we have a direct declarator, direct abstract declarator or | |
2849 | nothing (which counts as a direct abstract declarator here). */ | |
2850 | return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id); | |
2851 | } | |
2852 | ||
2853 | /* Parse a direct declarator or direct abstract declarator; arguments | |
2854 | as c_parser_declarator. */ | |
2855 | ||
2856 | static struct c_declarator * | |
2857 | c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
2858 | bool *seen_id) | |
2859 | { | |
2860 | /* The direct declarator must start with an identifier (possibly | |
2861 | omitted) or a parenthesized declarator (possibly abstract). In | |
2862 | an ordinary declarator, initial parentheses must start a | |
2863 | parenthesized declarator. In an abstract declarator or parameter | |
2864 | declarator, they could start a parenthesized declarator or a | |
2865 | parameter list. To tell which, the open parenthesis and any | |
2866 | following attributes must be read. If a declaration specifier | |
2867 | follows, then it is a parameter list; if the specifier is a | |
2868 | typedef name, there might be an ambiguity about redeclaring it, | |
2869 | which is resolved in the direction of treating it as a typedef | |
2870 | name. If a close parenthesis follows, it is also an empty | |
2871 | parameter list, as the syntax does not permit empty abstract | |
0fa2e4df | 2872 | declarators. Otherwise, it is a parenthesized declarator (in |
27bf414c JM |
2873 | which case the analysis may be repeated inside it, recursively). |
2874 | ||
2875 | ??? There is an ambiguity in a parameter declaration "int | |
2876 | (__attribute__((foo)) x)", where x is not a typedef name: it | |
2877 | could be an abstract declarator for a function, or declare x with | |
2878 | parentheses. The proper resolution of this ambiguity needs | |
2879 | documenting. At present we follow an accident of the old | |
2880 | parser's implementation, whereby the first parameter must have | |
2881 | some declaration specifiers other than just attributes. Thus as | |
0fa2e4df | 2882 | a parameter declaration it is treated as a parenthesized |
27bf414c JM |
2883 | parameter named x, and as an abstract declarator it is |
2884 | rejected. | |
2885 | ||
2886 | ??? Also following the old parser, attributes inside an empty | |
2887 | parameter list are ignored, making it a list not yielding a | |
2888 | prototype, rather than giving an error or making it have one | |
2889 | parameter with implicit type int. | |
2890 | ||
2891 | ??? Also following the old parser, typedef names may be | |
2892 | redeclared in declarators, but not Objective-C class names. */ | |
2893 | ||
2894 | if (kind != C_DTR_ABSTRACT | |
2895 | && c_parser_next_token_is (parser, CPP_NAME) | |
2896 | && ((type_seen_p | |
a6341d57 NP |
2897 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME |
2898 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
2899 | || c_parser_peek_token (parser)->id_kind == C_ID_ID)) |
2900 | { | |
2901 | struct c_declarator *inner | |
2902 | = build_id_declarator (c_parser_peek_token (parser)->value); | |
2903 | *seen_id = true; | |
6037d88d | 2904 | inner->id_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2905 | c_parser_consume_token (parser); |
2906 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2907 | } | |
2908 | ||
2909 | if (kind != C_DTR_NORMAL | |
2910 | && c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
2911 | { | |
2912 | struct c_declarator *inner = build_id_declarator (NULL_TREE); | |
2913 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2914 | } | |
2915 | ||
2916 | /* Either we are at the end of an abstract declarator, or we have | |
2917 | parentheses. */ | |
2918 | ||
2919 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2920 | { | |
2921 | tree attrs; | |
2922 | struct c_declarator *inner; | |
2923 | c_parser_consume_token (parser); | |
2924 | attrs = c_parser_attributes (parser); | |
2925 | if (kind != C_DTR_NORMAL | |
2926 | && (c_parser_next_token_starts_declspecs (parser) | |
2927 | || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))) | |
2928 | { | |
2929 | struct c_arg_info *args | |
2930 | = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL, | |
2931 | attrs); | |
2932 | if (args == NULL) | |
2933 | return NULL; | |
2934 | else | |
2935 | { | |
2936 | inner | |
2937 | = build_function_declarator (args, | |
2938 | build_id_declarator (NULL_TREE)); | |
2939 | return c_parser_direct_declarator_inner (parser, *seen_id, | |
2940 | inner); | |
2941 | } | |
2942 | } | |
2943 | /* A parenthesized declarator. */ | |
2944 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
2945 | if (inner != NULL && attrs != NULL) | |
2946 | inner = build_attrs_declarator (attrs, inner); | |
2947 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
2948 | { | |
2949 | c_parser_consume_token (parser); | |
2950 | if (inner == NULL) | |
2951 | return NULL; | |
2952 | else | |
2953 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
2954 | } | |
2955 | else | |
2956 | { | |
2957 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2958 | "expected %<)%>"); | |
2959 | return NULL; | |
2960 | } | |
2961 | } | |
2962 | else | |
2963 | { | |
2964 | if (kind == C_DTR_NORMAL) | |
2965 | { | |
2966 | c_parser_error (parser, "expected identifier or %<(%>"); | |
2967 | return NULL; | |
2968 | } | |
2969 | else | |
2970 | return build_id_declarator (NULL_TREE); | |
2971 | } | |
2972 | } | |
2973 | ||
2974 | /* Parse part of a direct declarator or direct abstract declarator, | |
2975 | given that some (in INNER) has already been parsed; ID_PRESENT is | |
2976 | true if an identifier is present, false for an abstract | |
2977 | declarator. */ | |
2978 | ||
2979 | static struct c_declarator * | |
2980 | c_parser_direct_declarator_inner (c_parser *parser, bool id_present, | |
2981 | struct c_declarator *inner) | |
2982 | { | |
2983 | /* Parse a sequence of array declarators and parameter lists. */ | |
2984 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
2985 | { | |
b8698a0f | 2986 | location_t brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2987 | struct c_declarator *declarator; |
2988 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
2989 | bool static_seen; | |
2990 | bool star_seen; | |
2991 | tree dimen; | |
2992 | c_parser_consume_token (parser); | |
29ce73cb | 2993 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
2994 | static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC); |
2995 | if (static_seen) | |
2996 | c_parser_consume_token (parser); | |
2997 | if (static_seen && !quals_attrs->declspecs_seen_p) | |
29ce73cb | 2998 | c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id); |
27bf414c JM |
2999 | if (!quals_attrs->declspecs_seen_p) |
3000 | quals_attrs = NULL; | |
3001 | /* If "static" is present, there must be an array dimension. | |
3002 | Otherwise, there may be a dimension, "*", or no | |
3003 | dimension. */ | |
3004 | if (static_seen) | |
3005 | { | |
3006 | star_seen = false; | |
3007 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3008 | } | |
3009 | else | |
3010 | { | |
3011 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3012 | { | |
3013 | dimen = NULL_TREE; | |
3014 | star_seen = false; | |
3015 | } | |
3016 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
3017 | { | |
3018 | if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE) | |
3019 | { | |
3020 | dimen = NULL_TREE; | |
3021 | star_seen = true; | |
3022 | c_parser_consume_token (parser); | |
3023 | } | |
3024 | else | |
3025 | { | |
3026 | star_seen = false; | |
3027 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3028 | } | |
3029 | } | |
3030 | else | |
3031 | { | |
3032 | star_seen = false; | |
3033 | dimen = c_parser_expr_no_commas (parser, NULL).value; | |
3034 | } | |
3035 | } | |
3036 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3037 | c_parser_consume_token (parser); | |
3038 | else | |
3039 | { | |
3040 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3041 | "expected %<]%>"); | |
3042 | return NULL; | |
3043 | } | |
97e3c923 JJ |
3044 | if (dimen) |
3045 | mark_exp_read (dimen); | |
c2255bc4 AH |
3046 | declarator = build_array_declarator (brace_loc, dimen, quals_attrs, |
3047 | static_seen, star_seen); | |
52ffd86e MS |
3048 | if (declarator == NULL) |
3049 | return NULL; | |
6ac0194d | 3050 | inner = set_array_declarator_inner (declarator, inner); |
27bf414c JM |
3051 | return c_parser_direct_declarator_inner (parser, id_present, inner); |
3052 | } | |
3053 | else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3054 | { | |
3055 | tree attrs; | |
3056 | struct c_arg_info *args; | |
3057 | c_parser_consume_token (parser); | |
3058 | attrs = c_parser_attributes (parser); | |
3059 | args = c_parser_parms_declarator (parser, id_present, attrs); | |
3060 | if (args == NULL) | |
3061 | return NULL; | |
3062 | else | |
3063 | { | |
3064 | inner = build_function_declarator (args, inner); | |
3065 | return c_parser_direct_declarator_inner (parser, id_present, inner); | |
3066 | } | |
3067 | } | |
3068 | return inner; | |
3069 | } | |
3070 | ||
3071 | /* Parse a parameter list or identifier list, including the closing | |
3072 | parenthesis but not the opening one. ATTRS are the attributes at | |
3073 | the start of the list. ID_LIST_OK is true if an identifier list is | |
3074 | acceptable; such a list must not have attributes at the start. */ | |
3075 | ||
3076 | static struct c_arg_info * | |
3077 | c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs) | |
3078 | { | |
3079 | push_scope (); | |
3080 | declare_parm_level (); | |
3081 | /* If the list starts with an identifier, it is an identifier list. | |
3082 | Otherwise, it is either a prototype list or an empty list. */ | |
3083 | if (id_list_ok | |
3084 | && !attrs | |
3085 | && c_parser_next_token_is (parser, CPP_NAME) | |
29ce73cb PB |
3086 | && c_parser_peek_token (parser)->id_kind == C_ID_ID |
3087 | ||
3088 | /* Look ahead to detect typos in type names. */ | |
3089 | && c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
3090 | && c_parser_peek_2nd_token (parser)->type != CPP_MULT | |
3091 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
3092 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_SQUARE) | |
27bf414c | 3093 | { |
7fa3585c | 3094 | tree list = NULL_TREE, *nextp = &list; |
27bf414c JM |
3095 | while (c_parser_next_token_is (parser, CPP_NAME) |
3096 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
3097 | { | |
7fa3585c GK |
3098 | *nextp = build_tree_list (NULL_TREE, |
3099 | c_parser_peek_token (parser)->value); | |
3100 | nextp = & TREE_CHAIN (*nextp); | |
27bf414c JM |
3101 | c_parser_consume_token (parser); |
3102 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
3103 | break; | |
3104 | c_parser_consume_token (parser); | |
3105 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3106 | { | |
3107 | c_parser_error (parser, "expected identifier"); | |
3108 | break; | |
3109 | } | |
3110 | } | |
3111 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3112 | { | |
b3399d18 | 3113 | struct c_arg_info *ret = build_arg_info (); |
27bf414c | 3114 | ret->types = list; |
27bf414c JM |
3115 | c_parser_consume_token (parser); |
3116 | pop_scope (); | |
3117 | return ret; | |
3118 | } | |
3119 | else | |
3120 | { | |
3121 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3122 | "expected %<)%>"); | |
3123 | pop_scope (); | |
3124 | return NULL; | |
3125 | } | |
3126 | } | |
3127 | else | |
3128 | { | |
a04a722b JM |
3129 | struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs, |
3130 | NULL); | |
27bf414c JM |
3131 | pop_scope (); |
3132 | return ret; | |
3133 | } | |
3134 | } | |
3135 | ||
3136 | /* Parse a parameter list (possibly empty), including the closing | |
3137 | parenthesis but not the opening one. ATTRS are the attributes at | |
a04a722b JM |
3138 | the start of the list. EXPR is NULL or an expression that needs to |
3139 | be evaluated for the side effects of array size expressions in the | |
3140 | parameters. */ | |
27bf414c JM |
3141 | |
3142 | static struct c_arg_info * | |
a04a722b | 3143 | c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr) |
27bf414c | 3144 | { |
09a1e889 | 3145 | bool bad_parm = false; |
a04a722b | 3146 | |
27bf414c JM |
3147 | /* ??? Following the old parser, forward parameter declarations may |
3148 | use abstract declarators, and if no real parameter declarations | |
3149 | follow the forward declarations then this is not diagnosed. Also | |
3150 | note as above that attributes are ignored as the only contents of | |
3151 | the parentheses, or as the only contents after forward | |
3152 | declarations. */ | |
3153 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3154 | { | |
b3399d18 | 3155 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
3156 | c_parser_consume_token (parser); |
3157 | return ret; | |
3158 | } | |
3159 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3160 | { | |
b3399d18 | 3161 | struct c_arg_info *ret = build_arg_info (); |
6637388f TG |
3162 | |
3163 | if (flag_allow_parameterless_variadic_functions) | |
3164 | { | |
3165 | /* F (...) is allowed. */ | |
3166 | ret->types = NULL_TREE; | |
3167 | } | |
3168 | else | |
3169 | { | |
3170 | /* Suppress -Wold-style-definition for this case. */ | |
3171 | ret->types = error_mark_node; | |
3172 | error_at (c_parser_peek_token (parser)->location, | |
3173 | "ISO C requires a named argument before %<...%>"); | |
3174 | } | |
27bf414c JM |
3175 | c_parser_consume_token (parser); |
3176 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3177 | { | |
3178 | c_parser_consume_token (parser); | |
3179 | return ret; | |
3180 | } | |
3181 | else | |
3182 | { | |
3183 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3184 | "expected %<)%>"); | |
3185 | return NULL; | |
3186 | } | |
3187 | } | |
3188 | /* Nonempty list of parameters, either terminated with semicolon | |
3189 | (forward declarations; recurse) or with close parenthesis (normal | |
3190 | function) or with ", ... )" (variadic function). */ | |
3191 | while (true) | |
3192 | { | |
3193 | /* Parse a parameter. */ | |
3194 | struct c_parm *parm = c_parser_parameter_declaration (parser, attrs); | |
3195 | attrs = NULL_TREE; | |
09a1e889 SZ |
3196 | if (parm == NULL) |
3197 | bad_parm = true; | |
3198 | else | |
a04a722b | 3199 | push_parm_decl (parm, &expr); |
27bf414c JM |
3200 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3201 | { | |
3202 | tree new_attrs; | |
3203 | c_parser_consume_token (parser); | |
91d975b8 | 3204 | mark_forward_parm_decls (); |
27bf414c | 3205 | new_attrs = c_parser_attributes (parser); |
a04a722b | 3206 | return c_parser_parms_list_declarator (parser, new_attrs, expr); |
27bf414c JM |
3207 | } |
3208 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3209 | { | |
3210 | c_parser_consume_token (parser); | |
09a1e889 | 3211 | if (bad_parm) |
a04a722b | 3212 | return NULL; |
09a1e889 | 3213 | else |
a04a722b | 3214 | return get_parm_info (false, expr); |
27bf414c JM |
3215 | } |
3216 | if (!c_parser_require (parser, CPP_COMMA, | |
3217 | "expected %<;%>, %<,%> or %<)%>")) | |
3218 | { | |
3219 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3220 | return NULL; | |
3221 | } | |
3222 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3223 | { | |
3224 | c_parser_consume_token (parser); | |
3225 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3226 | { | |
3227 | c_parser_consume_token (parser); | |
09a1e889 | 3228 | if (bad_parm) |
a04a722b | 3229 | return NULL; |
09a1e889 | 3230 | else |
a04a722b | 3231 | return get_parm_info (true, expr); |
27bf414c JM |
3232 | } |
3233 | else | |
3234 | { | |
3235 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3236 | "expected %<)%>"); | |
3237 | return NULL; | |
3238 | } | |
3239 | } | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | /* Parse a parameter declaration. ATTRS are the attributes at the | |
3244 | start of the declaration if it is the first parameter. */ | |
3245 | ||
3246 | static struct c_parm * | |
3247 | c_parser_parameter_declaration (c_parser *parser, tree attrs) | |
3248 | { | |
3249 | struct c_declspecs *specs; | |
3250 | struct c_declarator *declarator; | |
3251 | tree prefix_attrs; | |
3252 | tree postfix_attrs = NULL_TREE; | |
3253 | bool dummy = false; | |
3254 | if (!c_parser_next_token_starts_declspecs (parser)) | |
3255 | { | |
09a1e889 SZ |
3256 | c_token *token = c_parser_peek_token (parser); |
3257 | if (parser->error) | |
3258 | return NULL; | |
3259 | c_parser_set_source_position_from_token (token); | |
29ce73cb | 3260 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
09a1e889 SZ |
3261 | { |
3262 | error ("unknown type name %qE", token->value); | |
3263 | parser->error = true; | |
3264 | } | |
27bf414c JM |
3265 | /* ??? In some Objective-C cases '...' isn't applicable so there |
3266 | should be a different message. */ | |
09a1e889 SZ |
3267 | else |
3268 | c_parser_error (parser, | |
3269 | "expected declaration specifiers or %<...%>"); | |
27bf414c JM |
3270 | c_parser_skip_to_end_of_parameter (parser); |
3271 | return NULL; | |
3272 | } | |
3273 | specs = build_null_declspecs (); | |
3274 | if (attrs) | |
3275 | { | |
3276 | declspecs_add_attrs (specs, attrs); | |
3277 | attrs = NULL_TREE; | |
3278 | } | |
29ce73cb | 3279 | c_parser_declspecs (parser, specs, true, true, true, cla_nonabstract_decl); |
27bf414c JM |
3280 | finish_declspecs (specs); |
3281 | pending_xref_error (); | |
3282 | prefix_attrs = specs->attrs; | |
3283 | specs->attrs = NULL_TREE; | |
9e5b2115 PB |
3284 | declarator = c_parser_declarator (parser, |
3285 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3286 | C_DTR_PARM, &dummy); |
3287 | if (declarator == NULL) | |
3288 | { | |
3289 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
3290 | return NULL; | |
3291 | } | |
3292 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3293 | postfix_attrs = c_parser_attributes (parser); | |
3294 | return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs), | |
3295 | declarator); | |
3296 | } | |
3297 | ||
3298 | /* Parse a string literal in an asm expression. It should not be | |
3299 | translated, and wide string literals are an error although | |
3300 | permitted by the syntax. This is a GNU extension. | |
3301 | ||
3302 | asm-string-literal: | |
3303 | string-literal | |
3304 | ||
3305 | ??? At present, following the old parser, the caller needs to have | |
46c2514e TT |
3306 | set lex_untranslated_string to 1. It would be better to follow the |
3307 | C++ parser rather than using this kludge. */ | |
27bf414c JM |
3308 | |
3309 | static tree | |
3310 | c_parser_asm_string_literal (c_parser *parser) | |
3311 | { | |
3312 | tree str; | |
87f9e23d TT |
3313 | int save_flag = warn_overlength_strings; |
3314 | warn_overlength_strings = 0; | |
27bf414c JM |
3315 | if (c_parser_next_token_is (parser, CPP_STRING)) |
3316 | { | |
3317 | str = c_parser_peek_token (parser)->value; | |
3318 | c_parser_consume_token (parser); | |
3319 | } | |
3320 | else if (c_parser_next_token_is (parser, CPP_WSTRING)) | |
3321 | { | |
3ba09659 AH |
3322 | error_at (c_parser_peek_token (parser)->location, |
3323 | "wide string literal in %<asm%>"); | |
27bf414c JM |
3324 | str = build_string (1, ""); |
3325 | c_parser_consume_token (parser); | |
3326 | } | |
3327 | else | |
3328 | { | |
3329 | c_parser_error (parser, "expected string literal"); | |
3330 | str = NULL_TREE; | |
3331 | } | |
87f9e23d | 3332 | warn_overlength_strings = save_flag; |
27bf414c JM |
3333 | return str; |
3334 | } | |
3335 | ||
3336 | /* Parse a simple asm expression. This is used in restricted | |
3337 | contexts, where a full expression with inputs and outputs does not | |
3338 | make sense. This is a GNU extension. | |
3339 | ||
3340 | simple-asm-expr: | |
3341 | asm ( asm-string-literal ) | |
3342 | */ | |
3343 | ||
3344 | static tree | |
3345 | c_parser_simple_asm_expr (c_parser *parser) | |
3346 | { | |
3347 | tree str; | |
3348 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); | |
3349 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3350 | lex_untranslated_string kludge. */ |
3351 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3352 | c_parser_consume_token (parser); |
3353 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3354 | { | |
46c2514e | 3355 | parser->lex_untranslated_string = false; |
27bf414c JM |
3356 | return NULL_TREE; |
3357 | } | |
3358 | str = c_parser_asm_string_literal (parser); | |
46c2514e | 3359 | parser->lex_untranslated_string = false; |
27bf414c JM |
3360 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
3361 | { | |
3362 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3363 | return NULL_TREE; | |
3364 | } | |
3365 | return str; | |
3366 | } | |
3367 | ||
3368 | /* Parse (possibly empty) attributes. This is a GNU extension. | |
3369 | ||
3370 | attributes: | |
3371 | empty | |
3372 | attributes attribute | |
3373 | ||
3374 | attribute: | |
3375 | __attribute__ ( ( attribute-list ) ) | |
3376 | ||
3377 | attribute-list: | |
3378 | attrib | |
3379 | attribute_list , attrib | |
3380 | ||
3381 | attrib: | |
3382 | empty | |
3383 | any-word | |
3384 | any-word ( identifier ) | |
3385 | any-word ( identifier , nonempty-expr-list ) | |
3386 | any-word ( expr-list ) | |
3387 | ||
3388 | where the "identifier" must not be declared as a type, and | |
3389 | "any-word" may be any identifier (including one declared as a | |
3390 | type), a reserved word storage class specifier, type specifier or | |
3391 | type qualifier. ??? This still leaves out most reserved keywords | |
3392 | (following the old parser), shouldn't we include them, and why not | |
3393 | allow identifiers declared as types to start the arguments? */ | |
3394 | ||
3395 | static tree | |
3396 | c_parser_attributes (c_parser *parser) | |
3397 | { | |
3398 | tree attrs = NULL_TREE; | |
3399 | while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3400 | { | |
3401 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3402 | lex_untranslated_string kludge. */ |
3403 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3404 | c_parser_consume_token (parser); |
3405 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3406 | { | |
46c2514e | 3407 | parser->lex_untranslated_string = false; |
27bf414c JM |
3408 | return attrs; |
3409 | } | |
3410 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3411 | { | |
46c2514e | 3412 | parser->lex_untranslated_string = false; |
27bf414c JM |
3413 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
3414 | return attrs; | |
3415 | } | |
3416 | /* Parse the attribute list. */ | |
3417 | while (c_parser_next_token_is (parser, CPP_COMMA) | |
3418 | || c_parser_next_token_is (parser, CPP_NAME) | |
3419 | || c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3420 | { | |
3421 | tree attr, attr_name, attr_args; | |
bbbbb16a | 3422 | VEC(tree,gc) *expr_list; |
27bf414c JM |
3423 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
3424 | { | |
3425 | c_parser_consume_token (parser); | |
3426 | continue; | |
3427 | } | |
3428 | if (c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3429 | { | |
3430 | /* ??? See comment above about what keywords are | |
3431 | accepted here. */ | |
3432 | bool ok; | |
3433 | switch (c_parser_peek_token (parser)->keyword) | |
3434 | { | |
3435 | case RID_STATIC: | |
3436 | case RID_UNSIGNED: | |
3437 | case RID_LONG: | |
a6766312 | 3438 | case RID_INT128: |
27bf414c JM |
3439 | case RID_CONST: |
3440 | case RID_EXTERN: | |
3441 | case RID_REGISTER: | |
3442 | case RID_TYPEDEF: | |
3443 | case RID_SHORT: | |
3444 | case RID_INLINE: | |
bbceee64 | 3445 | case RID_NORETURN: |
27bf414c JM |
3446 | case RID_VOLATILE: |
3447 | case RID_SIGNED: | |
3448 | case RID_AUTO: | |
3449 | case RID_RESTRICT: | |
3450 | case RID_COMPLEX: | |
3451 | case RID_THREAD: | |
3452 | case RID_INT: | |
3453 | case RID_CHAR: | |
3454 | case RID_FLOAT: | |
3455 | case RID_DOUBLE: | |
3456 | case RID_VOID: | |
9a8ce21f JG |
3457 | case RID_DFLOAT32: |
3458 | case RID_DFLOAT64: | |
3459 | case RID_DFLOAT128: | |
27bf414c | 3460 | case RID_BOOL: |
ab22c1fa CF |
3461 | case RID_FRACT: |
3462 | case RID_ACCUM: | |
3463 | case RID_SAT: | |
27bf414c JM |
3464 | ok = true; |
3465 | break; | |
3466 | default: | |
3467 | ok = false; | |
3468 | break; | |
3469 | } | |
3470 | if (!ok) | |
3471 | break; | |
5dc4a7f4 JJ |
3472 | /* Accept __attribute__((__const)) as __attribute__((const)) |
3473 | etc. */ | |
3474 | attr_name | |
3475 | = ridpointers[(int) c_parser_peek_token (parser)->keyword]; | |
27bf414c | 3476 | } |
5dc4a7f4 JJ |
3477 | else |
3478 | attr_name = c_parser_peek_token (parser)->value; | |
27bf414c JM |
3479 | c_parser_consume_token (parser); |
3480 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) | |
3481 | { | |
3482 | attr = build_tree_list (attr_name, NULL_TREE); | |
3483 | attrs = chainon (attrs, attr); | |
3484 | continue; | |
3485 | } | |
3486 | c_parser_consume_token (parser); | |
3487 | /* Parse the attribute contents. If they start with an | |
3488 | identifier which is followed by a comma or close | |
3489 | parenthesis, then the arguments start with that | |
91ebb981 IS |
3490 | identifier; otherwise they are an expression list. |
3491 | In objective-c the identifier may be a classname. */ | |
27bf414c | 3492 | if (c_parser_next_token_is (parser, CPP_NAME) |
91ebb981 IS |
3493 | && (c_parser_peek_token (parser)->id_kind == C_ID_ID |
3494 | || (c_dialect_objc () | |
3495 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3496 | && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA) |
3497 | || (c_parser_peek_2nd_token (parser)->type | |
3498 | == CPP_CLOSE_PAREN))) | |
3499 | { | |
3500 | tree arg1 = c_parser_peek_token (parser)->value; | |
3501 | c_parser_consume_token (parser); | |
3502 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3503 | attr_args = build_tree_list (NULL_TREE, arg1); | |
3504 | else | |
3505 | { | |
bbbbb16a | 3506 | tree tree_list; |
27bf414c | 3507 | c_parser_consume_token (parser); |
bbbbb16a | 3508 | expr_list = c_parser_expr_list (parser, false, true, NULL); |
c166b898 | 3509 | tree_list = build_tree_list_vec (expr_list); |
bbbbb16a | 3510 | attr_args = tree_cons (NULL_TREE, arg1, tree_list); |
c166b898 | 3511 | release_tree_vector (expr_list); |
27bf414c JM |
3512 | } |
3513 | } | |
3514 | else | |
3515 | { | |
3516 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3517 | attr_args = NULL_TREE; | |
3518 | else | |
bbbbb16a ILT |
3519 | { |
3520 | expr_list = c_parser_expr_list (parser, false, true, NULL); | |
c166b898 ILT |
3521 | attr_args = build_tree_list_vec (expr_list); |
3522 | release_tree_vector (expr_list); | |
bbbbb16a | 3523 | } |
27bf414c JM |
3524 | } |
3525 | attr = build_tree_list (attr_name, attr_args); | |
3526 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3527 | c_parser_consume_token (parser); | |
3528 | else | |
3529 | { | |
46c2514e | 3530 | parser->lex_untranslated_string = false; |
27bf414c JM |
3531 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3532 | "expected %<)%>"); | |
3533 | return attrs; | |
3534 | } | |
3535 | attrs = chainon (attrs, attr); | |
3536 | } | |
3537 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3538 | c_parser_consume_token (parser); | |
3539 | else | |
3540 | { | |
46c2514e | 3541 | parser->lex_untranslated_string = false; |
27bf414c JM |
3542 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3543 | "expected %<)%>"); | |
3544 | return attrs; | |
3545 | } | |
3546 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3547 | c_parser_consume_token (parser); | |
3548 | else | |
3549 | { | |
46c2514e | 3550 | parser->lex_untranslated_string = false; |
27bf414c JM |
3551 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3552 | "expected %<)%>"); | |
3553 | return attrs; | |
3554 | } | |
46c2514e | 3555 | parser->lex_untranslated_string = false; |
27bf414c JM |
3556 | } |
3557 | return attrs; | |
3558 | } | |
3559 | ||
3560 | /* Parse a type name (C90 6.5.5, C99 6.7.6). | |
3561 | ||
3562 | type-name: | |
3563 | specifier-qualifier-list abstract-declarator[opt] | |
3564 | */ | |
3565 | ||
3566 | static struct c_type_name * | |
3567 | c_parser_type_name (c_parser *parser) | |
3568 | { | |
3569 | struct c_declspecs *specs = build_null_declspecs (); | |
3570 | struct c_declarator *declarator; | |
3571 | struct c_type_name *ret; | |
3572 | bool dummy = false; | |
29ce73cb | 3573 | c_parser_declspecs (parser, specs, false, true, true, cla_prefer_type); |
27bf414c JM |
3574 | if (!specs->declspecs_seen_p) |
3575 | { | |
3576 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
3577 | return NULL; | |
3578 | } | |
29ce73cb PB |
3579 | if (specs->type != error_mark_node) |
3580 | { | |
3581 | pending_xref_error (); | |
3582 | finish_declspecs (specs); | |
3583 | } | |
9e5b2115 PB |
3584 | declarator = c_parser_declarator (parser, |
3585 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3586 | C_DTR_ABSTRACT, &dummy); |
3587 | if (declarator == NULL) | |
3588 | return NULL; | |
3589 | ret = XOBNEW (&parser_obstack, struct c_type_name); | |
3590 | ret->specs = specs; | |
3591 | ret->declarator = declarator; | |
3592 | return ret; | |
3593 | } | |
3594 | ||
3595 | /* Parse an initializer (C90 6.5.7, C99 6.7.8). | |
3596 | ||
3597 | initializer: | |
3598 | assignment-expression | |
3599 | { initializer-list } | |
3600 | { initializer-list , } | |
3601 | ||
3602 | initializer-list: | |
3603 | designation[opt] initializer | |
3604 | initializer-list , designation[opt] initializer | |
3605 | ||
3606 | designation: | |
3607 | designator-list = | |
3608 | ||
3609 | designator-list: | |
3610 | designator | |
3611 | designator-list designator | |
3612 | ||
3613 | designator: | |
3614 | array-designator | |
3615 | . identifier | |
3616 | ||
3617 | array-designator: | |
3618 | [ constant-expression ] | |
3619 | ||
3620 | GNU extensions: | |
3621 | ||
3622 | initializer: | |
3623 | { } | |
3624 | ||
3625 | designation: | |
3626 | array-designator | |
3627 | identifier : | |
3628 | ||
3629 | array-designator: | |
3630 | [ constant-expression ... constant-expression ] | |
3631 | ||
3632 | Any expression without commas is accepted in the syntax for the | |
3633 | constant-expressions, with non-constant expressions rejected later. | |
3634 | ||
3635 | This function is only used for top-level initializers; for nested | |
3636 | ones, see c_parser_initval. */ | |
3637 | ||
3638 | static struct c_expr | |
3639 | c_parser_initializer (c_parser *parser) | |
3640 | { | |
3641 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
3642 | return c_parser_braced_init (parser, NULL_TREE, false); | |
3643 | else | |
46bdb9cf JM |
3644 | { |
3645 | struct c_expr ret; | |
c2255bc4 | 3646 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
3647 | ret = c_parser_expr_no_commas (parser, NULL); |
3648 | if (TREE_CODE (ret.value) != STRING_CST | |
3649 | && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 3650 | ret = default_function_array_read_conversion (loc, ret); |
46bdb9cf JM |
3651 | return ret; |
3652 | } | |
27bf414c JM |
3653 | } |
3654 | ||
3655 | /* Parse a braced initializer list. TYPE is the type specified for a | |
3656 | compound literal, and NULL_TREE for other initializers and for | |
3657 | nested braced lists. NESTED_P is true for nested braced lists, | |
3658 | false for the list of a compound literal or the list that is the | |
3659 | top-level initializer in a declaration. */ | |
3660 | ||
3661 | static struct c_expr | |
3662 | c_parser_braced_init (c_parser *parser, tree type, bool nested_p) | |
3663 | { | |
a1e3b3d9 LB |
3664 | struct c_expr ret; |
3665 | struct obstack braced_init_obstack; | |
c7412148 | 3666 | location_t brace_loc = c_parser_peek_token (parser)->location; |
a1e3b3d9 | 3667 | gcc_obstack_init (&braced_init_obstack); |
27bf414c JM |
3668 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); |
3669 | c_parser_consume_token (parser); | |
3670 | if (nested_p) | |
a1e3b3d9 | 3671 | push_init_level (0, &braced_init_obstack); |
27bf414c JM |
3672 | else |
3673 | really_start_incremental_init (type); | |
3674 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3675 | { | |
509c9d60 | 3676 | pedwarn (brace_loc, OPT_pedantic, "ISO C forbids empty initializer braces"); |
27bf414c JM |
3677 | } |
3678 | else | |
3679 | { | |
3680 | /* Parse a non-empty initializer list, possibly with a trailing | |
3681 | comma. */ | |
3682 | while (true) | |
3683 | { | |
a1e3b3d9 | 3684 | c_parser_initelt (parser, &braced_init_obstack); |
27bf414c JM |
3685 | if (parser->error) |
3686 | break; | |
3687 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
3688 | c_parser_consume_token (parser); | |
3689 | else | |
3690 | break; | |
3691 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
3692 | break; | |
3693 | } | |
3694 | } | |
3695 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
3696 | { | |
27bf414c JM |
3697 | ret.value = error_mark_node; |
3698 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 3699 | ret.original_type = NULL; |
27bf414c | 3700 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>"); |
a1e3b3d9 LB |
3701 | pop_init_level (0, &braced_init_obstack); |
3702 | obstack_free (&braced_init_obstack, NULL); | |
27bf414c JM |
3703 | return ret; |
3704 | } | |
3705 | c_parser_consume_token (parser); | |
a1e3b3d9 LB |
3706 | ret = pop_init_level (0, &braced_init_obstack); |
3707 | obstack_free (&braced_init_obstack, NULL); | |
3708 | return ret; | |
27bf414c JM |
3709 | } |
3710 | ||
3711 | /* Parse a nested initializer, including designators. */ | |
3712 | ||
3713 | static void | |
a1e3b3d9 | 3714 | c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack) |
27bf414c JM |
3715 | { |
3716 | /* Parse any designator or designator list. A single array | |
3717 | designator may have the subsequent "=" omitted in GNU C, but a | |
3718 | longer list or a structure member designator may not. */ | |
3719 | if (c_parser_next_token_is (parser, CPP_NAME) | |
3720 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
3721 | { | |
3722 | /* Old-style structure member designator. */ | |
a1e3b3d9 LB |
3723 | set_init_label (c_parser_peek_token (parser)->value, |
3724 | braced_init_obstack); | |
fcf73884 | 3725 | /* Use the colon as the error location. */ |
b8698a0f | 3726 | pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_pedantic, |
509c9d60 | 3727 | "obsolete use of designated initializer with %<:%>"); |
27bf414c JM |
3728 | c_parser_consume_token (parser); |
3729 | c_parser_consume_token (parser); | |
3730 | } | |
3731 | else | |
3732 | { | |
3733 | /* des_seen is 0 if there have been no designators, 1 if there | |
3734 | has been a single array designator and 2 otherwise. */ | |
3735 | int des_seen = 0; | |
c7412148 | 3736 | /* Location of a designator. */ |
922f2908 | 3737 | location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3738 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE) |
3739 | || c_parser_next_token_is (parser, CPP_DOT)) | |
3740 | { | |
3741 | int des_prev = des_seen; | |
c7412148 TT |
3742 | if (!des_seen) |
3743 | des_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
3744 | if (des_seen < 2) |
3745 | des_seen++; | |
3746 | if (c_parser_next_token_is (parser, CPP_DOT)) | |
3747 | { | |
3748 | des_seen = 2; | |
3749 | c_parser_consume_token (parser); | |
3750 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
3751 | { | |
a1e3b3d9 LB |
3752 | set_init_label (c_parser_peek_token (parser)->value, |
3753 | braced_init_obstack); | |
27bf414c JM |
3754 | c_parser_consume_token (parser); |
3755 | } | |
3756 | else | |
3757 | { | |
3758 | struct c_expr init; | |
3759 | init.value = error_mark_node; | |
3760 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3761 | init.original_type = NULL; |
27bf414c JM |
3762 | c_parser_error (parser, "expected identifier"); |
3763 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3764 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3765 | return; |
3766 | } | |
3767 | } | |
3768 | else | |
3769 | { | |
3770 | tree first, second; | |
922f2908 | 3771 | location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
3772 | /* ??? Following the old parser, [ objc-receiver |
3773 | objc-message-args ] is accepted as an initializer, | |
3774 | being distinguished from a designator by what follows | |
3775 | the first assignment expression inside the square | |
3776 | brackets, but after a first array designator a | |
3777 | subsequent square bracket is for Objective-C taken to | |
3778 | start an expression, using the obsolete form of | |
3779 | designated initializer without '=', rather than | |
3780 | possibly being a second level of designation: in LALR | |
3781 | terms, the '[' is shifted rather than reducing | |
3782 | designator to designator-list. */ | |
3783 | if (des_prev == 1 && c_dialect_objc ()) | |
3784 | { | |
3785 | des_seen = des_prev; | |
3786 | break; | |
3787 | } | |
3788 | if (des_prev == 0 && c_dialect_objc ()) | |
3789 | { | |
3790 | /* This might be an array designator or an | |
3791 | Objective-C message expression. If the former, | |
3792 | continue parsing here; if the latter, parse the | |
3793 | remainder of the initializer given the starting | |
3794 | primary-expression. ??? It might make sense to | |
3795 | distinguish when des_prev == 1 as well; see | |
3796 | previous comment. */ | |
3797 | tree rec, args; | |
3798 | struct c_expr mexpr; | |
3799 | c_parser_consume_token (parser); | |
3800 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
3801 | && ((c_parser_peek_token (parser)->id_kind | |
3802 | == C_ID_TYPENAME) | |
3803 | || (c_parser_peek_token (parser)->id_kind | |
3804 | == C_ID_CLASSNAME))) | |
3805 | { | |
3806 | /* Type name receiver. */ | |
3807 | tree id = c_parser_peek_token (parser)->value; | |
3808 | c_parser_consume_token (parser); | |
3809 | rec = objc_get_class_reference (id); | |
3810 | goto parse_message_args; | |
3811 | } | |
3812 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3813 | mark_exp_read (first); |
27bf414c JM |
3814 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS) |
3815 | || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3816 | goto array_desig_after_first; | |
3817 | /* Expression receiver. So far only one part | |
3818 | without commas has been parsed; there might be | |
3819 | more of the expression. */ | |
3820 | rec = first; | |
3821 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
3822 | { | |
f2a71bbc | 3823 | struct c_expr next; |
c2255bc4 AH |
3824 | location_t comma_loc, exp_loc; |
3825 | comma_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 3826 | c_parser_consume_token (parser); |
c2255bc4 | 3827 | exp_loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 3828 | next = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
3829 | next = default_function_array_read_conversion (exp_loc, |
3830 | next); | |
c2255bc4 | 3831 | rec = build_compound_expr (comma_loc, rec, next.value); |
27bf414c JM |
3832 | } |
3833 | parse_message_args: | |
3834 | /* Now parse the objc-message-args. */ | |
3835 | args = c_parser_objc_message_args (parser); | |
3836 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3837 | "expected %<]%>"); | |
3838 | mexpr.value | |
eb345401 | 3839 | = objc_build_message_expr (rec, args); |
27bf414c | 3840 | mexpr.original_code = ERROR_MARK; |
6866c6e8 | 3841 | mexpr.original_type = NULL; |
27bf414c JM |
3842 | /* Now parse and process the remainder of the |
3843 | initializer, starting with this message | |
3844 | expression as a primary-expression. */ | |
a1e3b3d9 | 3845 | c_parser_initval (parser, &mexpr, braced_init_obstack); |
27bf414c JM |
3846 | return; |
3847 | } | |
3848 | c_parser_consume_token (parser); | |
3849 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3850 | mark_exp_read (first); |
27bf414c JM |
3851 | array_desig_after_first: |
3852 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3853 | { | |
c7412148 | 3854 | ellipsis_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3855 | c_parser_consume_token (parser); |
3856 | second = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 3857 | mark_exp_read (second); |
27bf414c JM |
3858 | } |
3859 | else | |
3860 | second = NULL_TREE; | |
3861 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3862 | { | |
3863 | c_parser_consume_token (parser); | |
a1e3b3d9 | 3864 | set_init_index (first, second, braced_init_obstack); |
fcf73884 | 3865 | if (second) |
b8698a0f | 3866 | pedwarn (ellipsis_loc, OPT_pedantic, |
509c9d60 | 3867 | "ISO C forbids specifying range of elements to initialize"); |
27bf414c JM |
3868 | } |
3869 | else | |
3870 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3871 | "expected %<]%>"); | |
3872 | } | |
3873 | } | |
3874 | if (des_seen >= 1) | |
3875 | { | |
3876 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
3877 | { | |
fcf73884 | 3878 | if (!flag_isoc99) |
b8698a0f | 3879 | pedwarn (des_loc, OPT_pedantic, |
509c9d60 | 3880 | "ISO C90 forbids specifying subobject to initialize"); |
27bf414c JM |
3881 | c_parser_consume_token (parser); |
3882 | } | |
3883 | else | |
3884 | { | |
3885 | if (des_seen == 1) | |
b8698a0f | 3886 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 3887 | "obsolete use of designated initializer without %<=%>"); |
27bf414c JM |
3888 | else |
3889 | { | |
3890 | struct c_expr init; | |
3891 | init.value = error_mark_node; | |
3892 | init.original_code = ERROR_MARK; | |
6866c6e8 | 3893 | init.original_type = NULL; |
27bf414c JM |
3894 | c_parser_error (parser, "expected %<=%>"); |
3895 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 3896 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3897 | return; |
3898 | } | |
3899 | } | |
3900 | } | |
3901 | } | |
a1e3b3d9 | 3902 | c_parser_initval (parser, NULL, braced_init_obstack); |
27bf414c JM |
3903 | } |
3904 | ||
3905 | /* Parse a nested initializer; as c_parser_initializer but parses | |
3906 | initializers within braced lists, after any designators have been | |
3907 | applied. If AFTER is not NULL then it is an Objective-C message | |
3908 | expression which is the primary-expression starting the | |
3909 | initializer. */ | |
3910 | ||
3911 | static void | |
a1e3b3d9 LB |
3912 | c_parser_initval (c_parser *parser, struct c_expr *after, |
3913 | struct obstack * braced_init_obstack) | |
27bf414c JM |
3914 | { |
3915 | struct c_expr init; | |
3916 | gcc_assert (!after || c_dialect_objc ()); | |
3917 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after) | |
3918 | init = c_parser_braced_init (parser, NULL_TREE, true); | |
3919 | else | |
46bdb9cf | 3920 | { |
c2255bc4 | 3921 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
3922 | init = c_parser_expr_no_commas (parser, after); |
3923 | if (init.value != NULL_TREE | |
3924 | && TREE_CODE (init.value) != STRING_CST | |
3925 | && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR) | |
ebfbbdc5 | 3926 | init = default_function_array_read_conversion (loc, init); |
46bdb9cf | 3927 | } |
a1e3b3d9 | 3928 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
3929 | } |
3930 | ||
3931 | /* Parse a compound statement (possibly a function body) (C90 6.6.2, | |
3932 | C99 6.8.2). | |
3933 | ||
3934 | compound-statement: | |
3935 | { block-item-list[opt] } | |
3936 | { label-declarations block-item-list } | |
3937 | ||
3938 | block-item-list: | |
3939 | block-item | |
3940 | block-item-list block-item | |
3941 | ||
3942 | block-item: | |
3943 | nested-declaration | |
3944 | statement | |
3945 | ||
3946 | nested-declaration: | |
3947 | declaration | |
3948 | ||
3949 | GNU extensions: | |
3950 | ||
3951 | compound-statement: | |
3952 | { label-declarations block-item-list } | |
3953 | ||
3954 | nested-declaration: | |
3955 | __extension__ nested-declaration | |
3956 | nested-function-definition | |
3957 | ||
3958 | label-declarations: | |
3959 | label-declaration | |
3960 | label-declarations label-declaration | |
3961 | ||
3962 | label-declaration: | |
3963 | __label__ identifier-list ; | |
3964 | ||
3965 | Allowing the mixing of declarations and code is new in C99. The | |
3966 | GNU syntax also permits (not shown above) labels at the end of | |
3967 | compound statements, which yield an error. We don't allow labels | |
3968 | on declarations; this might seem like a natural extension, but | |
3969 | there would be a conflict between attributes on the label and | |
3970 | prefix attributes on the declaration. ??? The syntax follows the | |
3971 | old parser in requiring something after label declarations. | |
3972 | Although they are erroneous if the labels declared aren't defined, | |
953ff289 | 3973 | is it useful for the syntax to be this way? |
b8698a0f | 3974 | |
953ff289 | 3975 | OpenMP: |
b8698a0f | 3976 | |
953ff289 DN |
3977 | block-item: |
3978 | openmp-directive | |
3979 | ||
3980 | openmp-directive: | |
3981 | barrier-directive | |
3982 | flush-directive */ | |
27bf414c JM |
3983 | |
3984 | static tree | |
3985 | c_parser_compound_statement (c_parser *parser) | |
3986 | { | |
3987 | tree stmt; | |
c2255bc4 AH |
3988 | location_t brace_loc; |
3989 | brace_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 3990 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
5600f233 JM |
3991 | { |
3992 | /* Ensure a scope is entered and left anyway to avoid confusion | |
3993 | if we have just prepared to enter a function body. */ | |
3994 | stmt = c_begin_compound_stmt (true); | |
c2255bc4 | 3995 | c_end_compound_stmt (brace_loc, stmt, true); |
5600f233 JM |
3996 | return error_mark_node; |
3997 | } | |
27bf414c JM |
3998 | stmt = c_begin_compound_stmt (true); |
3999 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 4000 | return c_end_compound_stmt (brace_loc, stmt, true); |
27bf414c JM |
4001 | } |
4002 | ||
4003 | /* Parse a compound statement except for the opening brace. This is | |
4004 | used for parsing both compound statements and statement expressions | |
4005 | (which follow different paths to handling the opening). */ | |
4006 | ||
4007 | static void | |
4008 | c_parser_compound_statement_nostart (c_parser *parser) | |
4009 | { | |
4010 | bool last_stmt = false; | |
4011 | bool last_label = false; | |
6ec637a4 | 4012 | bool save_valid_for_pragma = valid_location_for_stdc_pragma_p (); |
3ba09659 | 4013 | location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4014 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) |
4015 | { | |
4016 | c_parser_consume_token (parser); | |
4017 | return; | |
4018 | } | |
6ec637a4 | 4019 | mark_valid_location_for_stdc_pragma (true); |
27bf414c JM |
4020 | if (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4021 | { | |
4022 | /* Read zero or more forward-declarations for labels that nested | |
4023 | functions can jump to. */ | |
6ec637a4 | 4024 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4025 | while (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4026 | { | |
c2255bc4 | 4027 | label_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4028 | c_parser_consume_token (parser); |
4029 | /* Any identifiers, including those declared as type names, | |
4030 | are OK here. */ | |
4031 | while (true) | |
4032 | { | |
4033 | tree label; | |
4034 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
4035 | { | |
4036 | c_parser_error (parser, "expected identifier"); | |
4037 | break; | |
4038 | } | |
4039 | label | |
4040 | = declare_label (c_parser_peek_token (parser)->value); | |
4041 | C_DECLARED_LABEL_FLAG (label) = 1; | |
c2255bc4 | 4042 | add_stmt (build_stmt (label_loc, DECL_EXPR, label)); |
27bf414c JM |
4043 | c_parser_consume_token (parser); |
4044 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4045 | c_parser_consume_token (parser); | |
4046 | else | |
4047 | break; | |
4048 | } | |
4049 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4050 | } | |
c2255bc4 | 4051 | pedwarn (label_loc, OPT_pedantic, "ISO C forbids label declarations"); |
27bf414c JM |
4052 | } |
4053 | /* We must now have at least one statement, label or declaration. */ | |
4054 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4055 | { | |
6ec637a4 | 4056 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
27bf414c JM |
4057 | c_parser_error (parser, "expected declaration or statement"); |
4058 | c_parser_consume_token (parser); | |
4059 | return; | |
4060 | } | |
4061 | while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4062 | { | |
4063 | location_t loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4064 | if (c_parser_next_token_is_keyword (parser, RID_CASE) |
4065 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4066 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4067 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4068 | { | |
c7412148 TT |
4069 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) |
4070 | label_loc = c_parser_peek_2nd_token (parser)->location; | |
4071 | else | |
4072 | label_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4073 | last_label = true; |
4074 | last_stmt = false; | |
6ec637a4 | 4075 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4076 | c_parser_label (parser); |
4077 | } | |
4078 | else if (!last_label | |
2f413185 | 4079 | && c_parser_next_tokens_start_declaration (parser)) |
27bf414c JM |
4080 | { |
4081 | last_label = false; | |
6ec637a4 | 4082 | mark_valid_location_for_stdc_pragma (false); |
f05b9d93 | 4083 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
fcf73884 | 4084 | if (last_stmt) |
b8698a0f | 4085 | pedwarn_c90 (loc, |
509c9d60 | 4086 | (pedantic && !flag_isoc99) |
fcf73884 MLI |
4087 | ? OPT_pedantic |
4088 | : OPT_Wdeclaration_after_statement, | |
509c9d60 | 4089 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4090 | last_stmt = false; |
4091 | } | |
4092 | else if (!last_label | |
4093 | && c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4094 | { | |
4095 | /* __extension__ can start a declaration, but is also an | |
4096 | unary operator that can start an expression. Consume all | |
4097 | but the last of a possible series of __extension__ to | |
4098 | determine which. */ | |
4099 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4100 | && (c_parser_peek_2nd_token (parser)->keyword | |
4101 | == RID_EXTENSION)) | |
4102 | c_parser_consume_token (parser); | |
32912286 | 4103 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4104 | { |
4105 | int ext; | |
4106 | ext = disable_extension_diagnostics (); | |
4107 | c_parser_consume_token (parser); | |
4108 | last_label = false; | |
6ec637a4 | 4109 | mark_valid_location_for_stdc_pragma (false); |
32912286 | 4110 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 | 4111 | true, NULL); |
27bf414c JM |
4112 | /* Following the old parser, __extension__ does not |
4113 | disable this diagnostic. */ | |
4114 | restore_extension_diagnostics (ext); | |
fcf73884 | 4115 | if (last_stmt) |
509c9d60 | 4116 | pedwarn_c90 (loc, (pedantic && !flag_isoc99) |
fcf73884 MLI |
4117 | ? OPT_pedantic |
4118 | : OPT_Wdeclaration_after_statement, | |
509c9d60 | 4119 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4120 | last_stmt = false; |
4121 | } | |
4122 | else | |
4123 | goto statement; | |
4124 | } | |
bc4071dd RH |
4125 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
4126 | { | |
4127 | /* External pragmas, and some omp pragmas, are not associated | |
4128 | with regular c code, and so are not to be considered statements | |
4129 | syntactically. This ensures that the user doesn't put them | |
4130 | places that would turn into syntax errors if the directive | |
4131 | were ignored. */ | |
4132 | if (c_parser_pragma (parser, pragma_compound)) | |
4133 | last_label = false, last_stmt = true; | |
4134 | } | |
4135 | else if (c_parser_next_token_is (parser, CPP_EOF)) | |
4136 | { | |
6ec637a4 | 4137 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
bc4071dd RH |
4138 | c_parser_error (parser, "expected declaration or statement"); |
4139 | return; | |
4140 | } | |
b4b56033 MLI |
4141 | else if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4142 | { | |
b8698a0f | 4143 | if (parser->in_if_block) |
b4b56033 | 4144 | { |
6ec637a4 | 4145 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
3ba09659 | 4146 | error_at (loc, """expected %<}%> before %<else%>"); |
b4b56033 MLI |
4147 | return; |
4148 | } | |
b8698a0f | 4149 | else |
b4b56033 | 4150 | { |
3ba09659 | 4151 | error_at (loc, "%<else%> without a previous %<if%>"); |
b4b56033 MLI |
4152 | c_parser_consume_token (parser); |
4153 | continue; | |
4154 | } | |
4155 | } | |
27bf414c JM |
4156 | else |
4157 | { | |
4158 | statement: | |
4159 | last_label = false; | |
4160 | last_stmt = true; | |
6ec637a4 | 4161 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4162 | c_parser_statement_after_labels (parser); |
4163 | } | |
2c14ae9a VR |
4164 | |
4165 | parser->error = false; | |
27bf414c JM |
4166 | } |
4167 | if (last_label) | |
3ba09659 | 4168 | error_at (label_loc, "label at end of compound statement"); |
27bf414c | 4169 | c_parser_consume_token (parser); |
6ec637a4 JJ |
4170 | /* Restore the value we started with. */ |
4171 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); | |
27bf414c JM |
4172 | } |
4173 | ||
4174 | /* Parse a label (C90 6.6.1, C99 6.8.1). | |
4175 | ||
4176 | label: | |
4177 | identifier : attributes[opt] | |
4178 | case constant-expression : | |
4179 | default : | |
4180 | ||
4181 | GNU extensions: | |
4182 | ||
4183 | label: | |
4184 | case constant-expression ... constant-expression : | |
4185 | ||
4186 | The use of attributes on labels is a GNU extension. The syntax in | |
4187 | GNU C accepts any expressions without commas, non-constant | |
4188 | expressions being rejected later. */ | |
4189 | ||
4190 | static void | |
4191 | c_parser_label (c_parser *parser) | |
4192 | { | |
4193 | location_t loc1 = c_parser_peek_token (parser)->location; | |
4194 | tree label = NULL_TREE; | |
4195 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) | |
4196 | { | |
4197 | tree exp1, exp2; | |
4198 | c_parser_consume_token (parser); | |
4199 | exp1 = c_parser_expr_no_commas (parser, NULL).value; | |
4200 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
4201 | { | |
4202 | c_parser_consume_token (parser); | |
c2255bc4 | 4203 | label = do_case (loc1, exp1, NULL_TREE); |
27bf414c JM |
4204 | } |
4205 | else if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4206 | { | |
4207 | c_parser_consume_token (parser); | |
4208 | exp2 = c_parser_expr_no_commas (parser, NULL).value; | |
4209 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4210 | label = do_case (loc1, exp1, exp2); |
27bf414c JM |
4211 | } |
4212 | else | |
4213 | c_parser_error (parser, "expected %<:%> or %<...%>"); | |
4214 | } | |
4215 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
4216 | { | |
4217 | c_parser_consume_token (parser); | |
4218 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4219 | label = do_case (loc1, NULL_TREE, NULL_TREE); |
27bf414c JM |
4220 | } |
4221 | else | |
4222 | { | |
4223 | tree name = c_parser_peek_token (parser)->value; | |
4224 | tree tlab; | |
27bf414c | 4225 | tree attrs; |
c7412148 | 4226 | location_t loc2 = c_parser_peek_token (parser)->location; |
27bf414c JM |
4227 | gcc_assert (c_parser_next_token_is (parser, CPP_NAME)); |
4228 | c_parser_consume_token (parser); | |
4229 | gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); | |
27bf414c JM |
4230 | c_parser_consume_token (parser); |
4231 | attrs = c_parser_attributes (parser); | |
4232 | tlab = define_label (loc2, name); | |
4233 | if (tlab) | |
4234 | { | |
4235 | decl_attributes (&tlab, attrs, 0); | |
c2255bc4 | 4236 | label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab)); |
27bf414c JM |
4237 | } |
4238 | } | |
4239 | if (label) | |
3d57f0f0 | 4240 | { |
2f413185 | 4241 | if (c_parser_next_tokens_start_declaration (parser)) |
3d57f0f0 | 4242 | { |
3ba09659 AH |
4243 | error_at (c_parser_peek_token (parser)->location, |
4244 | "a label can only be part of a statement and " | |
4245 | "a declaration is not a statement"); | |
b8698a0f | 4246 | c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, |
32912286 | 4247 | /*static_assert_ok*/ true, |
3d57f0f0 | 4248 | /*nested*/ true, /*empty_ok*/ false, |
f05b9d93 | 4249 | /*start_attr_ok*/ true, NULL); |
3d57f0f0 MLI |
4250 | } |
4251 | } | |
27bf414c JM |
4252 | } |
4253 | ||
4254 | /* Parse a statement (C90 6.6, C99 6.8). | |
4255 | ||
4256 | statement: | |
4257 | labeled-statement | |
4258 | compound-statement | |
4259 | expression-statement | |
4260 | selection-statement | |
4261 | iteration-statement | |
4262 | jump-statement | |
4263 | ||
4264 | labeled-statement: | |
4265 | label statement | |
4266 | ||
4267 | expression-statement: | |
4268 | expression[opt] ; | |
4269 | ||
4270 | selection-statement: | |
4271 | if-statement | |
4272 | switch-statement | |
4273 | ||
4274 | iteration-statement: | |
4275 | while-statement | |
4276 | do-statement | |
4277 | for-statement | |
4278 | ||
4279 | jump-statement: | |
4280 | goto identifier ; | |
4281 | continue ; | |
4282 | break ; | |
4283 | return expression[opt] ; | |
4284 | ||
4285 | GNU extensions: | |
4286 | ||
4287 | statement: | |
4288 | asm-statement | |
4289 | ||
4290 | jump-statement: | |
4291 | goto * expression ; | |
4292 | ||
4293 | Objective-C: | |
4294 | ||
4295 | statement: | |
4296 | objc-throw-statement | |
4297 | objc-try-catch-statement | |
4298 | objc-synchronized-statement | |
4299 | ||
4300 | objc-throw-statement: | |
4301 | @throw expression ; | |
4302 | @throw ; | |
953ff289 DN |
4303 | |
4304 | OpenMP: | |
4305 | ||
4306 | statement: | |
4307 | openmp-construct | |
4308 | ||
4309 | openmp-construct: | |
4310 | parallel-construct | |
4311 | for-construct | |
4312 | sections-construct | |
4313 | single-construct | |
4314 | parallel-for-construct | |
4315 | parallel-sections-construct | |
4316 | master-construct | |
4317 | critical-construct | |
4318 | atomic-construct | |
4319 | ordered-construct | |
4320 | ||
4321 | parallel-construct: | |
4322 | parallel-directive structured-block | |
4323 | ||
4324 | for-construct: | |
4325 | for-directive iteration-statement | |
4326 | ||
4327 | sections-construct: | |
4328 | sections-directive section-scope | |
4329 | ||
4330 | single-construct: | |
4331 | single-directive structured-block | |
4332 | ||
4333 | parallel-for-construct: | |
4334 | parallel-for-directive iteration-statement | |
4335 | ||
4336 | parallel-sections-construct: | |
4337 | parallel-sections-directive section-scope | |
4338 | ||
4339 | master-construct: | |
4340 | master-directive structured-block | |
4341 | ||
4342 | critical-construct: | |
4343 | critical-directive structured-block | |
4344 | ||
4345 | atomic-construct: | |
4346 | atomic-directive expression-statement | |
4347 | ||
4348 | ordered-construct: | |
4349 | ordered-directive structured-block */ | |
27bf414c JM |
4350 | |
4351 | static void | |
4352 | c_parser_statement (c_parser *parser) | |
4353 | { | |
4354 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4355 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4356 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4357 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4358 | c_parser_label (parser); | |
4359 | c_parser_statement_after_labels (parser); | |
4360 | } | |
4361 | ||
4362 | /* Parse a statement, other than a labeled statement. */ | |
4363 | ||
4364 | static void | |
4365 | c_parser_statement_after_labels (c_parser *parser) | |
4366 | { | |
4367 | location_t loc = c_parser_peek_token (parser)->location; | |
4368 | tree stmt = NULL_TREE; | |
b4b56033 MLI |
4369 | bool in_if_block = parser->in_if_block; |
4370 | parser->in_if_block = false; | |
27bf414c JM |
4371 | switch (c_parser_peek_token (parser)->type) |
4372 | { | |
4373 | case CPP_OPEN_BRACE: | |
4374 | add_stmt (c_parser_compound_statement (parser)); | |
4375 | break; | |
4376 | case CPP_KEYWORD: | |
4377 | switch (c_parser_peek_token (parser)->keyword) | |
4378 | { | |
4379 | case RID_IF: | |
4380 | c_parser_if_statement (parser); | |
4381 | break; | |
4382 | case RID_SWITCH: | |
4383 | c_parser_switch_statement (parser); | |
4384 | break; | |
4385 | case RID_WHILE: | |
4386 | c_parser_while_statement (parser); | |
4387 | break; | |
4388 | case RID_DO: | |
4389 | c_parser_do_statement (parser); | |
4390 | break; | |
4391 | case RID_FOR: | |
4392 | c_parser_for_statement (parser); | |
4393 | break; | |
4394 | case RID_GOTO: | |
4395 | c_parser_consume_token (parser); | |
4396 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4397 | { | |
c2255bc4 AH |
4398 | stmt = c_finish_goto_label (loc, |
4399 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4400 | c_parser_consume_token (parser); |
4401 | } | |
4402 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
4403 | { | |
84628aa8 JJ |
4404 | tree val; |
4405 | ||
27bf414c | 4406 | c_parser_consume_token (parser); |
84628aa8 JJ |
4407 | val = c_parser_expression (parser).value; |
4408 | mark_exp_read (val); | |
4409 | stmt = c_finish_goto_ptr (loc, val); | |
27bf414c JM |
4410 | } |
4411 | else | |
4412 | c_parser_error (parser, "expected identifier or %<*%>"); | |
4413 | goto expect_semicolon; | |
4414 | case RID_CONTINUE: | |
4415 | c_parser_consume_token (parser); | |
c2255bc4 | 4416 | stmt = c_finish_bc_stmt (loc, &c_cont_label, false); |
27bf414c JM |
4417 | goto expect_semicolon; |
4418 | case RID_BREAK: | |
4419 | c_parser_consume_token (parser); | |
c2255bc4 | 4420 | stmt = c_finish_bc_stmt (loc, &c_break_label, true); |
27bf414c JM |
4421 | goto expect_semicolon; |
4422 | case RID_RETURN: | |
4423 | c_parser_consume_token (parser); | |
4424 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4425 | { | |
c2255bc4 | 4426 | stmt = c_finish_return (loc, NULL_TREE, NULL_TREE); |
27bf414c JM |
4427 | c_parser_consume_token (parser); |
4428 | } | |
4429 | else | |
4430 | { | |
bbbbb16a | 4431 | struct c_expr expr = c_parser_expression_conv (parser); |
ebfbbdc5 | 4432 | mark_exp_read (expr.value); |
c2255bc4 | 4433 | stmt = c_finish_return (loc, expr.value, expr.original_type); |
27bf414c JM |
4434 | goto expect_semicolon; |
4435 | } | |
4436 | break; | |
4437 | case RID_ASM: | |
4438 | stmt = c_parser_asm_statement (parser); | |
4439 | break; | |
49b91f05 | 4440 | case RID_AT_THROW: |
27bf414c JM |
4441 | gcc_assert (c_dialect_objc ()); |
4442 | c_parser_consume_token (parser); | |
4443 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4444 | { | |
c2255bc4 | 4445 | stmt = objc_build_throw_stmt (loc, NULL_TREE); |
27bf414c JM |
4446 | c_parser_consume_token (parser); |
4447 | } | |
4448 | else | |
4449 | { | |
928c19bb JM |
4450 | tree expr = c_parser_expression (parser).value; |
4451 | expr = c_fully_fold (expr, false, NULL); | |
c2255bc4 | 4452 | stmt = objc_build_throw_stmt (loc, expr); |
27bf414c JM |
4453 | goto expect_semicolon; |
4454 | } | |
4455 | break; | |
49b91f05 | 4456 | case RID_AT_TRY: |
27bf414c | 4457 | gcc_assert (c_dialect_objc ()); |
437c2322 | 4458 | c_parser_objc_try_catch_finally_statement (parser); |
27bf414c JM |
4459 | break; |
4460 | case RID_AT_SYNCHRONIZED: | |
4461 | gcc_assert (c_dialect_objc ()); | |
4462 | c_parser_objc_synchronized_statement (parser); | |
4463 | break; | |
4464 | default: | |
4465 | goto expr_stmt; | |
4466 | } | |
4467 | break; | |
4468 | case CPP_SEMICOLON: | |
4469 | c_parser_consume_token (parser); | |
4470 | break; | |
4471 | case CPP_CLOSE_PAREN: | |
4472 | case CPP_CLOSE_SQUARE: | |
4473 | /* Avoid infinite loop in error recovery: | |
4474 | c_parser_skip_until_found stops at a closing nesting | |
4475 | delimiter without consuming it, but here we need to consume | |
4476 | it to proceed further. */ | |
4477 | c_parser_error (parser, "expected statement"); | |
4478 | c_parser_consume_token (parser); | |
4479 | break; | |
bc4071dd RH |
4480 | case CPP_PRAGMA: |
4481 | c_parser_pragma (parser, pragma_stmt); | |
4482 | break; | |
27bf414c JM |
4483 | default: |
4484 | expr_stmt: | |
c2255bc4 | 4485 | stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value); |
27bf414c JM |
4486 | expect_semicolon: |
4487 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4488 | break; | |
4489 | } | |
4490 | /* Two cases cannot and do not have line numbers associated: If stmt | |
4491 | is degenerate, such as "2;", then stmt is an INTEGER_CST, which | |
4492 | cannot hold line numbers. But that's OK because the statement | |
4493 | will either be changed to a MODIFY_EXPR during gimplification of | |
4494 | the statement expr, or discarded. If stmt was compound, but | |
4495 | without new variables, we will have skipped the creation of a | |
4496 | BIND and will have a bare STATEMENT_LIST. But that's OK because | |
4497 | (recursively) all of the component statements should already have | |
4498 | line numbers assigned. ??? Can we discard no-op statements | |
4499 | earlier? */ | |
c2255bc4 AH |
4500 | if (CAN_HAVE_LOCATION_P (stmt) |
4501 | && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION) | |
4502 | SET_EXPR_LOCATION (stmt, loc); | |
b4b56033 MLI |
4503 | |
4504 | parser->in_if_block = in_if_block; | |
27bf414c JM |
4505 | } |
4506 | ||
ca085fd7 MLI |
4507 | /* Parse the condition from an if, do, while or for statements. */ |
4508 | ||
4509 | static tree | |
4510 | c_parser_condition (c_parser *parser) | |
4511 | { | |
c2255bc4 | 4512 | location_t loc = c_parser_peek_token (parser)->location; |
ca085fd7 | 4513 | tree cond; |
928c19bb JM |
4514 | cond = c_parser_expression_conv (parser).value; |
4515 | cond = c_objc_common_truthvalue_conversion (loc, cond); | |
4516 | cond = c_fully_fold (cond, false, NULL); | |
ca085fd7 MLI |
4517 | if (warn_sequence_point) |
4518 | verify_sequence_points (cond); | |
4519 | return cond; | |
4520 | } | |
4521 | ||
27bf414c JM |
4522 | /* Parse a parenthesized condition from an if, do or while statement. |
4523 | ||
4524 | condition: | |
4525 | ( expression ) | |
4526 | */ | |
4527 | static tree | |
4528 | c_parser_paren_condition (c_parser *parser) | |
4529 | { | |
27bf414c JM |
4530 | tree cond; |
4531 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4532 | return error_mark_node; | |
ca085fd7 | 4533 | cond = c_parser_condition (parser); |
27bf414c JM |
4534 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4535 | return cond; | |
4536 | } | |
4537 | ||
4538 | /* Parse a statement which is a block in C99. */ | |
4539 | ||
4540 | static tree | |
4541 | c_parser_c99_block_statement (c_parser *parser) | |
4542 | { | |
4543 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4544 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c | 4545 | c_parser_statement (parser); |
c2255bc4 | 4546 | return c_end_compound_stmt (loc, block, flag_isoc99); |
27bf414c JM |
4547 | } |
4548 | ||
b4b56033 MLI |
4549 | /* Parse the body of an if statement. This is just parsing a |
4550 | statement but (a) it is a block in C99, (b) we track whether the | |
4551 | body is an if statement for the sake of -Wparentheses warnings, (c) | |
4552 | we handle an empty body specially for the sake of -Wempty-body | |
4553 | warnings, and (d) we call parser_compound_statement directly | |
4554 | because c_parser_statement_after_labels resets | |
4555 | parser->in_if_block. */ | |
27bf414c JM |
4556 | |
4557 | static tree | |
4558 | c_parser_if_body (c_parser *parser, bool *if_p) | |
4559 | { | |
4560 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 4561 | location_t body_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4562 | while (c_parser_next_token_is_keyword (parser, RID_CASE) |
4563 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4564 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4565 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4566 | c_parser_label (parser); | |
4567 | *if_p = c_parser_next_token_is_keyword (parser, RID_IF); | |
62e00e94 | 4568 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
b4b56033 | 4569 | { |
626c34b5 | 4570 | location_t loc = c_parser_peek_token (parser)->location; |
c2255bc4 | 4571 | add_stmt (build_empty_stmt (loc)); |
b4b56033 | 4572 | c_parser_consume_token (parser); |
626c34b5 PB |
4573 | if (!c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4574 | warning_at (loc, OPT_Wempty_body, | |
4575 | "suggest braces around empty body in an %<if%> statement"); | |
b4b56033 MLI |
4576 | } |
4577 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
4578 | add_stmt (c_parser_compound_statement (parser)); | |
4579 | else | |
4580 | c_parser_statement_after_labels (parser); | |
c2255bc4 | 4581 | return c_end_compound_stmt (body_loc, block, flag_isoc99); |
b4b56033 MLI |
4582 | } |
4583 | ||
4584 | /* Parse the else body of an if statement. This is just parsing a | |
4585 | statement but (a) it is a block in C99, (b) we handle an empty body | |
4586 | specially for the sake of -Wempty-body warnings. */ | |
4587 | ||
4588 | static tree | |
4589 | c_parser_else_body (c_parser *parser) | |
4590 | { | |
c2255bc4 | 4591 | location_t else_loc = c_parser_peek_token (parser)->location; |
b4b56033 MLI |
4592 | tree block = c_begin_compound_stmt (flag_isoc99); |
4593 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4594 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4595 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4596 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4597 | c_parser_label (parser); | |
4598 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4599 | { | |
c2255bc4 AH |
4600 | location_t loc = c_parser_peek_token (parser)->location; |
4601 | warning_at (loc, | |
626c34b5 PB |
4602 | OPT_Wempty_body, |
4603 | "suggest braces around empty body in an %<else%> statement"); | |
c2255bc4 | 4604 | add_stmt (build_empty_stmt (loc)); |
b4b56033 MLI |
4605 | c_parser_consume_token (parser); |
4606 | } | |
b8698a0f | 4607 | else |
b4b56033 | 4608 | c_parser_statement_after_labels (parser); |
c2255bc4 | 4609 | return c_end_compound_stmt (else_loc, block, flag_isoc99); |
27bf414c JM |
4610 | } |
4611 | ||
4612 | /* Parse an if statement (C90 6.6.4, C99 6.8.4). | |
4613 | ||
4614 | if-statement: | |
4615 | if ( expression ) statement | |
4616 | if ( expression ) statement else statement | |
4617 | */ | |
4618 | ||
4619 | static void | |
4620 | c_parser_if_statement (c_parser *parser) | |
4621 | { | |
4622 | tree block; | |
4623 | location_t loc; | |
4624 | tree cond; | |
b4b56033 | 4625 | bool first_if = false; |
27bf414c | 4626 | tree first_body, second_body; |
b4b56033 MLI |
4627 | bool in_if_block; |
4628 | ||
27bf414c JM |
4629 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF)); |
4630 | c_parser_consume_token (parser); | |
4631 | block = c_begin_compound_stmt (flag_isoc99); | |
4632 | loc = c_parser_peek_token (parser)->location; | |
4633 | cond = c_parser_paren_condition (parser); | |
b4b56033 MLI |
4634 | in_if_block = parser->in_if_block; |
4635 | parser->in_if_block = true; | |
27bf414c | 4636 | first_body = c_parser_if_body (parser, &first_if); |
b4b56033 | 4637 | parser->in_if_block = in_if_block; |
27bf414c JM |
4638 | if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4639 | { | |
4640 | c_parser_consume_token (parser); | |
b4b56033 | 4641 | second_body = c_parser_else_body (parser); |
27bf414c JM |
4642 | } |
4643 | else | |
4644 | second_body = NULL_TREE; | |
4645 | c_finish_if_stmt (loc, cond, first_body, second_body, first_if); | |
c2255bc4 | 4646 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4647 | } |
4648 | ||
4649 | /* Parse a switch statement (C90 6.6.4, C99 6.8.4). | |
4650 | ||
4651 | switch-statement: | |
4652 | switch (expression) statement | |
4653 | */ | |
4654 | ||
4655 | static void | |
4656 | c_parser_switch_statement (c_parser *parser) | |
4657 | { | |
4658 | tree block, expr, body, save_break; | |
c2255bc4 AH |
4659 | location_t switch_loc = c_parser_peek_token (parser)->location; |
4660 | location_t switch_cond_loc; | |
27bf414c JM |
4661 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH)); |
4662 | c_parser_consume_token (parser); | |
4663 | block = c_begin_compound_stmt (flag_isoc99); | |
4664 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
4665 | { | |
c2255bc4 | 4666 | switch_cond_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4667 | expr = c_parser_expression (parser).value; |
4668 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
4669 | } | |
4670 | else | |
c2255bc4 AH |
4671 | { |
4672 | switch_cond_loc = UNKNOWN_LOCATION; | |
4673 | expr = error_mark_node; | |
4674 | } | |
4675 | c_start_case (switch_loc, switch_cond_loc, expr); | |
27bf414c JM |
4676 | save_break = c_break_label; |
4677 | c_break_label = NULL_TREE; | |
4678 | body = c_parser_c99_block_statement (parser); | |
4679 | c_finish_case (body); | |
4680 | if (c_break_label) | |
c2255bc4 AH |
4681 | { |
4682 | location_t here = c_parser_peek_token (parser)->location; | |
4683 | tree t = build1 (LABEL_EXPR, void_type_node, c_break_label); | |
4684 | SET_EXPR_LOCATION (t, here); | |
4685 | add_stmt (t); | |
4686 | } | |
27bf414c | 4687 | c_break_label = save_break; |
c2255bc4 | 4688 | add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99)); |
27bf414c JM |
4689 | } |
4690 | ||
4691 | /* Parse a while statement (C90 6.6.5, C99 6.8.5). | |
4692 | ||
4693 | while-statement: | |
4694 | while (expression) statement | |
4695 | */ | |
4696 | ||
4697 | static void | |
4698 | c_parser_while_statement (c_parser *parser) | |
4699 | { | |
4700 | tree block, cond, body, save_break, save_cont; | |
4701 | location_t loc; | |
4702 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE)); | |
4703 | c_parser_consume_token (parser); | |
4704 | block = c_begin_compound_stmt (flag_isoc99); | |
4705 | loc = c_parser_peek_token (parser)->location; | |
4706 | cond = c_parser_paren_condition (parser); | |
4707 | save_break = c_break_label; | |
4708 | c_break_label = NULL_TREE; | |
4709 | save_cont = c_cont_label; | |
4710 | c_cont_label = NULL_TREE; | |
4711 | body = c_parser_c99_block_statement (parser); | |
4712 | c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true); | |
c2255bc4 | 4713 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4714 | c_break_label = save_break; |
4715 | c_cont_label = save_cont; | |
4716 | } | |
4717 | ||
4718 | /* Parse a do statement (C90 6.6.5, C99 6.8.5). | |
4719 | ||
4720 | do-statement: | |
4721 | do statement while ( expression ) ; | |
4722 | */ | |
4723 | ||
4724 | static void | |
4725 | c_parser_do_statement (c_parser *parser) | |
4726 | { | |
4727 | tree block, cond, body, save_break, save_cont, new_break, new_cont; | |
4728 | location_t loc; | |
4729 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO)); | |
4730 | c_parser_consume_token (parser); | |
62e00e94 | 4731 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3ba09659 AH |
4732 | warning_at (c_parser_peek_token (parser)->location, |
4733 | OPT_Wempty_body, | |
4734 | "suggest braces around empty body in %<do%> statement"); | |
27bf414c JM |
4735 | block = c_begin_compound_stmt (flag_isoc99); |
4736 | loc = c_parser_peek_token (parser)->location; | |
4737 | save_break = c_break_label; | |
4738 | c_break_label = NULL_TREE; | |
4739 | save_cont = c_cont_label; | |
4740 | c_cont_label = NULL_TREE; | |
4741 | body = c_parser_c99_block_statement (parser); | |
4742 | c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>"); | |
4743 | new_break = c_break_label; | |
4744 | c_break_label = save_break; | |
4745 | new_cont = c_cont_label; | |
4746 | c_cont_label = save_cont; | |
4747 | cond = c_parser_paren_condition (parser); | |
4748 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
4749 | c_parser_skip_to_end_of_block_or_statement (parser); | |
4750 | c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false); | |
c2255bc4 | 4751 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
4752 | } |
4753 | ||
4754 | /* Parse a for statement (C90 6.6.5, C99 6.8.5). | |
4755 | ||
4756 | for-statement: | |
4757 | for ( expression[opt] ; expression[opt] ; expression[opt] ) statement | |
4758 | for ( nested-declaration expression[opt] ; expression[opt] ) statement | |
4759 | ||
4760 | The form with a declaration is new in C99. | |
4761 | ||
4762 | ??? In accordance with the old parser, the declaration may be a | |
4763 | nested function, which is then rejected in check_for_loop_decls, | |
4764 | but does it make any sense for this to be included in the grammar? | |
4765 | Note in particular that the nested function does not include a | |
4766 | trailing ';', whereas the "declaration" production includes one. | |
4767 | Also, can we reject bad declarations earlier and cheaper than | |
f05b9d93 NP |
4768 | check_for_loop_decls? |
4769 | ||
4770 | In Objective-C, there are two additional variants: | |
4771 | ||
4772 | foreach-statement: | |
4773 | for ( expression in expresssion ) statement | |
4774 | for ( declaration in expression ) statement | |
4775 | ||
4776 | This is inconsistent with C, because the second variant is allowed | |
4777 | even if c99 is not enabled. | |
4778 | ||
4779 | The rest of the comment documents these Objective-C foreach-statement. | |
4780 | ||
4781 | Here is the canonical example of the first variant: | |
4782 | for (object in array) { do something with object } | |
4783 | we call the first expression ("object") the "object_expression" and | |
4784 | the second expression ("array") the "collection_expression". | |
4785 | object_expression must be an lvalue of type "id" (a generic Objective-C | |
4786 | object) because the loop works by assigning to object_expression the | |
4787 | various objects from the collection_expression. collection_expression | |
4788 | must evaluate to something of type "id" which responds to the method | |
4789 | countByEnumeratingWithState:objects:count:. | |
4790 | ||
4791 | The canonical example of the second variant is: | |
4792 | for (id object in array) { do something with object } | |
4793 | which is completely equivalent to | |
4794 | { | |
4795 | id object; | |
4796 | for (object in array) { do something with object } | |
4797 | } | |
4798 | Note that initizializing 'object' in some way (eg, "for ((object = | |
4799 | xxx) in array) { do something with object }") is possibly | |
4800 | technically valid, but completely pointless as 'object' will be | |
4801 | assigned to something else as soon as the loop starts. We should | |
4802 | most likely reject it (TODO). | |
4803 | ||
4804 | The beginning of the Objective-C foreach-statement looks exactly | |
4805 | like the beginning of the for-statement, and we can tell it is a | |
4806 | foreach-statement only because the initial declaration or | |
4807 | expression is terminated by 'in' instead of ';'. | |
4808 | */ | |
27bf414c JM |
4809 | |
4810 | static void | |
4811 | c_parser_for_statement (c_parser *parser) | |
4812 | { | |
4813 | tree block, cond, incr, save_break, save_cont, body; | |
f05b9d93 | 4814 | /* The following are only used when parsing an ObjC foreach statement. */ |
689f2c82 AO |
4815 | tree object_expression; |
4816 | /* Silence the bogus uninitialized warning. */ | |
4817 | tree collection_expression = NULL; | |
c2255bc4 AH |
4818 | location_t loc = c_parser_peek_token (parser)->location; |
4819 | location_t for_loc = c_parser_peek_token (parser)->location; | |
f05b9d93 | 4820 | bool is_foreach_statement = false; |
27bf414c JM |
4821 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR)); |
4822 | c_parser_consume_token (parser); | |
f05b9d93 NP |
4823 | /* Open a compound statement in Objective-C as well, just in case this is |
4824 | as foreach expression. */ | |
4825 | block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ()); | |
91b90ead UB |
4826 | cond = error_mark_node; |
4827 | incr = error_mark_node; | |
27bf414c JM |
4828 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
4829 | { | |
4830 | /* Parse the initialization declaration or expression. */ | |
f05b9d93 | 4831 | object_expression = error_mark_node; |
a5812bdc | 4832 | parser->objc_could_be_foreach_context = c_dialect_objc (); |
27bf414c JM |
4833 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
4834 | { | |
a5812bdc | 4835 | parser->objc_could_be_foreach_context = false; |
27bf414c | 4836 | c_parser_consume_token (parser); |
c2255bc4 | 4837 | c_finish_expr_stmt (loc, NULL_TREE); |
27bf414c | 4838 | } |
2f413185 | 4839 | else if (c_parser_next_tokens_start_declaration (parser)) |
27bf414c | 4840 | { |
f05b9d93 NP |
4841 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, |
4842 | &object_expression); | |
4843 | parser->objc_could_be_foreach_context = false; | |
4844 | ||
4845 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
4846 | { | |
4847 | c_parser_consume_token (parser); | |
4848 | is_foreach_statement = true; | |
4849 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
4850 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
4851 | } | |
4852 | else | |
4853 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
4854 | } |
4855 | else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4856 | { | |
4857 | /* __extension__ can start a declaration, but is also an | |
4858 | unary operator that can start an expression. Consume all | |
4859 | but the last of a possible series of __extension__ to | |
4860 | determine which. */ | |
4861 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4862 | && (c_parser_peek_2nd_token (parser)->keyword | |
4863 | == RID_EXTENSION)) | |
4864 | c_parser_consume_token (parser); | |
32912286 | 4865 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4866 | { |
4867 | int ext; | |
4868 | ext = disable_extension_diagnostics (); | |
4869 | c_parser_consume_token (parser); | |
32912286 | 4870 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
f05b9d93 NP |
4871 | true, &object_expression); |
4872 | parser->objc_could_be_foreach_context = false; | |
4873 | ||
27bf414c | 4874 | restore_extension_diagnostics (ext); |
f05b9d93 NP |
4875 | if (c_parser_next_token_is_keyword (parser, RID_IN)) |
4876 | { | |
4877 | c_parser_consume_token (parser); | |
4878 | is_foreach_statement = true; | |
4879 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
4880 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
4881 | } | |
4882 | else | |
4883 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
4884 | } |
4885 | else | |
4886 | goto init_expr; | |
4887 | } | |
4888 | else | |
4889 | { | |
4890 | init_expr: | |
f05b9d93 NP |
4891 | { |
4892 | tree init_expression; | |
f05b9d93 NP |
4893 | init_expression = c_parser_expression (parser).value; |
4894 | parser->objc_could_be_foreach_context = false; | |
4895 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
4896 | { | |
4897 | c_parser_consume_token (parser); | |
4898 | is_foreach_statement = true; | |
4899 | if (! lvalue_p (init_expression)) | |
4900 | c_parser_error (parser, "invalid iterating variable in fast enumeration"); | |
69a97201 | 4901 | object_expression = c_fully_fold (init_expression, false, NULL); |
f05b9d93 NP |
4902 | } |
4903 | else | |
4904 | { | |
4905 | c_finish_expr_stmt (loc, init_expression); | |
4906 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4907 | } | |
4908 | } | |
27bf414c | 4909 | } |
f05b9d93 NP |
4910 | /* Parse the loop condition. In the case of a foreach |
4911 | statement, there is no loop condition. */ | |
a5812bdc | 4912 | gcc_assert (!parser->objc_could_be_foreach_context); |
f05b9d93 | 4913 | if (!is_foreach_statement) |
27bf414c | 4914 | { |
f05b9d93 NP |
4915 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
4916 | { | |
4917 | c_parser_consume_token (parser); | |
4918 | cond = NULL_TREE; | |
4919 | } | |
4920 | else | |
4921 | { | |
4922 | cond = c_parser_condition (parser); | |
4923 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4924 | } | |
27bf414c | 4925 | } |
f05b9d93 NP |
4926 | /* Parse the increment expression (the third expression in a |
4927 | for-statement). In the case of a foreach-statement, this is | |
4928 | the expression that follows the 'in'. */ | |
4929 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
27bf414c | 4930 | { |
f05b9d93 NP |
4931 | if (is_foreach_statement) |
4932 | { | |
4933 | c_parser_error (parser, "missing collection in fast enumeration"); | |
4934 | collection_expression = error_mark_node; | |
4935 | } | |
4936 | else | |
4937 | incr = c_process_expr_stmt (loc, NULL_TREE); | |
27bf414c | 4938 | } |
27bf414c | 4939 | else |
f05b9d93 NP |
4940 | { |
4941 | if (is_foreach_statement) | |
69a97201 NP |
4942 | collection_expression = c_fully_fold (c_parser_expression (parser).value, |
4943 | false, NULL); | |
f05b9d93 NP |
4944 | else |
4945 | incr = c_process_expr_stmt (loc, c_parser_expression (parser).value); | |
4946 | } | |
27bf414c JM |
4947 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
4948 | } | |
27bf414c JM |
4949 | save_break = c_break_label; |
4950 | c_break_label = NULL_TREE; | |
4951 | save_cont = c_cont_label; | |
4952 | c_cont_label = NULL_TREE; | |
4953 | body = c_parser_c99_block_statement (parser); | |
f05b9d93 NP |
4954 | if (is_foreach_statement) |
4955 | objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label); | |
4956 | else | |
4957 | c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true); | |
4958 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ())); | |
27bf414c JM |
4959 | c_break_label = save_break; |
4960 | c_cont_label = save_cont; | |
4961 | } | |
4962 | ||
4963 | /* Parse an asm statement, a GNU extension. This is a full-blown asm | |
4964 | statement with inputs, outputs, clobbers, and volatile tag | |
4965 | allowed. | |
4966 | ||
4967 | asm-statement: | |
4968 | asm type-qualifier[opt] ( asm-argument ) ; | |
1c384bf1 | 4969 | asm type-qualifier[opt] goto ( asm-goto-argument ) ; |
27bf414c JM |
4970 | |
4971 | asm-argument: | |
4972 | asm-string-literal | |
4973 | asm-string-literal : asm-operands[opt] | |
4974 | asm-string-literal : asm-operands[opt] : asm-operands[opt] | |
1c384bf1 RH |
4975 | asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt] |
4976 | ||
4977 | asm-goto-argument: | |
4978 | asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \ | |
4979 | : asm-goto-operands | |
27bf414c JM |
4980 | |
4981 | Qualifiers other than volatile are accepted in the syntax but | |
4982 | warned for. */ | |
4983 | ||
4984 | static tree | |
4985 | c_parser_asm_statement (c_parser *parser) | |
4986 | { | |
1c384bf1 RH |
4987 | tree quals, str, outputs, inputs, clobbers, labels, ret; |
4988 | bool simple, is_goto; | |
c2255bc4 | 4989 | location_t asm_loc = c_parser_peek_token (parser)->location; |
1c384bf1 RH |
4990 | int section, nsections; |
4991 | ||
27bf414c JM |
4992 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); |
4993 | c_parser_consume_token (parser); | |
4994 | if (c_parser_next_token_is_keyword (parser, RID_VOLATILE)) | |
4995 | { | |
4996 | quals = c_parser_peek_token (parser)->value; | |
4997 | c_parser_consume_token (parser); | |
4998 | } | |
4999 | else if (c_parser_next_token_is_keyword (parser, RID_CONST) | |
5000 | || c_parser_next_token_is_keyword (parser, RID_RESTRICT)) | |
5001 | { | |
3ba09659 AH |
5002 | warning_at (c_parser_peek_token (parser)->location, |
5003 | 0, | |
5004 | "%E qualifier ignored on asm", | |
5005 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
5006 | quals = NULL_TREE; |
5007 | c_parser_consume_token (parser); | |
5008 | } | |
5009 | else | |
5010 | quals = NULL_TREE; | |
1c384bf1 RH |
5011 | |
5012 | is_goto = false; | |
5013 | if (c_parser_next_token_is_keyword (parser, RID_GOTO)) | |
5014 | { | |
5015 | c_parser_consume_token (parser); | |
5016 | is_goto = true; | |
5017 | } | |
5018 | ||
27bf414c | 5019 | /* ??? Follow the C++ parser rather than using the |
46c2514e TT |
5020 | lex_untranslated_string kludge. */ |
5021 | parser->lex_untranslated_string = true; | |
1c384bf1 RH |
5022 | ret = NULL; |
5023 | ||
27bf414c | 5024 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
1c384bf1 RH |
5025 | goto error; |
5026 | ||
27bf414c | 5027 | str = c_parser_asm_string_literal (parser); |
b85eb797 | 5028 | if (str == NULL_TREE) |
1c384bf1 RH |
5029 | goto error_close_paren; |
5030 | ||
5031 | simple = true; | |
5032 | outputs = NULL_TREE; | |
5033 | inputs = NULL_TREE; | |
5034 | clobbers = NULL_TREE; | |
5035 | labels = NULL_TREE; | |
5036 | ||
5037 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5038 | goto done_asm; | |
5039 | ||
5040 | /* Parse each colon-delimited section of operands. */ | |
5041 | nsections = 3 + is_goto; | |
5042 | for (section = 0; section < nsections; ++section) | |
b85eb797 | 5043 | { |
1c384bf1 RH |
5044 | if (!c_parser_require (parser, CPP_COLON, |
5045 | is_goto | |
5046 | ? "expected %<:%>" | |
5047 | : "expected %<:%> or %<)%>")) | |
5048 | goto error_close_paren; | |
5049 | ||
5050 | /* Once past any colon, we're no longer a simple asm. */ | |
5051 | simple = false; | |
5052 | ||
5053 | if ((!c_parser_next_token_is (parser, CPP_COLON) | |
5054 | && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
5055 | || section == 3) | |
5056 | switch (section) | |
5057 | { | |
5058 | case 0: | |
5059 | /* For asm goto, we don't allow output operands, but reserve | |
5060 | the slot for a future extension that does allow them. */ | |
5061 | if (!is_goto) | |
5062 | outputs = c_parser_asm_operands (parser, false); | |
5063 | break; | |
5064 | case 1: | |
5065 | inputs = c_parser_asm_operands (parser, true); | |
5066 | break; | |
5067 | case 2: | |
5068 | clobbers = c_parser_asm_clobbers (parser); | |
5069 | break; | |
5070 | case 3: | |
5071 | labels = c_parser_asm_goto_operands (parser); | |
5072 | break; | |
5073 | default: | |
5074 | gcc_unreachable (); | |
5075 | } | |
5076 | ||
5077 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5078 | goto done_asm; | |
27bf414c | 5079 | } |
1c384bf1 | 5080 | |
27bf414c | 5081 | done_asm: |
27bf414c JM |
5082 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5083 | { | |
5084 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
1c384bf1 | 5085 | goto error; |
27bf414c | 5086 | } |
1c384bf1 | 5087 | |
27bf414c JM |
5088 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5089 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1c384bf1 | 5090 | |
c2255bc4 | 5091 | ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs, |
1c384bf1 RH |
5092 | clobbers, labels, simple)); |
5093 | ||
5094 | error: | |
5095 | parser->lex_untranslated_string = false; | |
27bf414c | 5096 | return ret; |
1c384bf1 RH |
5097 | |
5098 | error_close_paren: | |
5099 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5100 | goto error; | |
27bf414c JM |
5101 | } |
5102 | ||
46bdb9cf JM |
5103 | /* Parse asm operands, a GNU extension. If CONVERT_P (for inputs but |
5104 | not outputs), apply the default conversion of functions and arrays | |
5105 | to pointers. | |
27bf414c JM |
5106 | |
5107 | asm-operands: | |
5108 | asm-operand | |
5109 | asm-operands , asm-operand | |
5110 | ||
5111 | asm-operand: | |
5112 | asm-string-literal ( expression ) | |
5113 | [ identifier ] asm-string-literal ( expression ) | |
5114 | */ | |
5115 | ||
5116 | static tree | |
46bdb9cf | 5117 | c_parser_asm_operands (c_parser *parser, bool convert_p) |
27bf414c JM |
5118 | { |
5119 | tree list = NULL_TREE; | |
c2255bc4 | 5120 | location_t loc; |
27bf414c JM |
5121 | while (true) |
5122 | { | |
f2a71bbc JM |
5123 | tree name, str; |
5124 | struct c_expr expr; | |
27bf414c JM |
5125 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) |
5126 | { | |
5127 | c_parser_consume_token (parser); | |
5128 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5129 | { | |
5130 | tree id = c_parser_peek_token (parser)->value; | |
5131 | c_parser_consume_token (parser); | |
5132 | name = build_string (IDENTIFIER_LENGTH (id), | |
5133 | IDENTIFIER_POINTER (id)); | |
5134 | } | |
5135 | else | |
5136 | { | |
5137 | c_parser_error (parser, "expected identifier"); | |
5138 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
5139 | return NULL_TREE; | |
5140 | } | |
5141 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
5142 | "expected %<]%>"); | |
5143 | } | |
5144 | else | |
5145 | name = NULL_TREE; | |
5146 | str = c_parser_asm_string_literal (parser); | |
5147 | if (str == NULL_TREE) | |
5148 | return NULL_TREE; | |
46c2514e | 5149 | parser->lex_untranslated_string = false; |
27bf414c JM |
5150 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5151 | { | |
46c2514e | 5152 | parser->lex_untranslated_string = true; |
27bf414c JM |
5153 | return NULL_TREE; |
5154 | } | |
c2255bc4 | 5155 | loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 5156 | expr = c_parser_expression (parser); |
ebfbbdc5 | 5157 | mark_exp_read (expr.value); |
46bdb9cf | 5158 | if (convert_p) |
c2255bc4 | 5159 | expr = default_function_array_conversion (loc, expr); |
928c19bb | 5160 | expr.value = c_fully_fold (expr.value, false, NULL); |
46c2514e | 5161 | parser->lex_untranslated_string = true; |
27bf414c JM |
5162 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5163 | { | |
5164 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5165 | return NULL_TREE; | |
5166 | } | |
5167 | list = chainon (list, build_tree_list (build_tree_list (name, str), | |
f2a71bbc | 5168 | expr.value)); |
27bf414c JM |
5169 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
5170 | c_parser_consume_token (parser); | |
5171 | else | |
5172 | break; | |
5173 | } | |
5174 | return list; | |
5175 | } | |
5176 | ||
5177 | /* Parse asm clobbers, a GNU extension. | |
5178 | ||
5179 | asm-clobbers: | |
5180 | asm-string-literal | |
5181 | asm-clobbers , asm-string-literal | |
5182 | */ | |
5183 | ||
5184 | static tree | |
5185 | c_parser_asm_clobbers (c_parser *parser) | |
5186 | { | |
5187 | tree list = NULL_TREE; | |
5188 | while (true) | |
5189 | { | |
5190 | tree str = c_parser_asm_string_literal (parser); | |
5191 | if (str) | |
5192 | list = tree_cons (NULL_TREE, str, list); | |
5193 | else | |
5194 | return NULL_TREE; | |
5195 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5196 | c_parser_consume_token (parser); | |
5197 | else | |
5198 | break; | |
5199 | } | |
5200 | return list; | |
5201 | } | |
5202 | ||
1c384bf1 | 5203 | /* Parse asm goto labels, a GNU extension. |
b8698a0f | 5204 | |
1c384bf1 RH |
5205 | asm-goto-operands: |
5206 | identifier | |
5207 | asm-goto-operands , identifier | |
5208 | */ | |
5209 | ||
5210 | static tree | |
5211 | c_parser_asm_goto_operands (c_parser *parser) | |
5212 | { | |
5213 | tree list = NULL_TREE; | |
5214 | while (true) | |
5215 | { | |
5216 | tree name, label; | |
5217 | ||
5218 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5219 | { | |
5220 | c_token *tok = c_parser_peek_token (parser); | |
5221 | name = tok->value; | |
5222 | label = lookup_label_for_goto (tok->location, name); | |
5223 | c_parser_consume_token (parser); | |
5224 | TREE_USED (label) = 1; | |
5225 | } | |
5226 | else | |
5227 | { | |
5228 | c_parser_error (parser, "expected identifier"); | |
5229 | return NULL_TREE; | |
5230 | } | |
5231 | ||
5232 | name = build_string (IDENTIFIER_LENGTH (name), | |
5233 | IDENTIFIER_POINTER (name)); | |
5234 | list = tree_cons (name, label, list); | |
5235 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5236 | c_parser_consume_token (parser); | |
5237 | else | |
5238 | return nreverse (list); | |
5239 | } | |
5240 | } | |
5241 | ||
27bf414c JM |
5242 | /* Parse an expression other than a compound expression; that is, an |
5243 | assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not | |
5244 | NULL then it is an Objective-C message expression which is the | |
5245 | primary-expression starting the expression as an initializer. | |
5246 | ||
5247 | assignment-expression: | |
5248 | conditional-expression | |
5249 | unary-expression assignment-operator assignment-expression | |
5250 | ||
5251 | assignment-operator: one of | |
5252 | = *= /= %= += -= <<= >>= &= ^= |= | |
5253 | ||
5254 | In GNU C we accept any conditional expression on the LHS and | |
5255 | diagnose the invalid lvalue rather than producing a syntax | |
5256 | error. */ | |
5257 | ||
5258 | static struct c_expr | |
5259 | c_parser_expr_no_commas (c_parser *parser, struct c_expr *after) | |
5260 | { | |
5261 | struct c_expr lhs, rhs, ret; | |
5262 | enum tree_code code; | |
c2255bc4 | 5263 | location_t op_location, exp_location; |
27bf414c JM |
5264 | gcc_assert (!after || c_dialect_objc ()); |
5265 | lhs = c_parser_conditional_expression (parser, after); | |
c9f9eb5d | 5266 | op_location = c_parser_peek_token (parser)->location; |
27bf414c JM |
5267 | switch (c_parser_peek_token (parser)->type) |
5268 | { | |
5269 | case CPP_EQ: | |
5270 | code = NOP_EXPR; | |
5271 | break; | |
5272 | case CPP_MULT_EQ: | |
5273 | code = MULT_EXPR; | |
5274 | break; | |
5275 | case CPP_DIV_EQ: | |
5276 | code = TRUNC_DIV_EXPR; | |
5277 | break; | |
5278 | case CPP_MOD_EQ: | |
5279 | code = TRUNC_MOD_EXPR; | |
5280 | break; | |
5281 | case CPP_PLUS_EQ: | |
5282 | code = PLUS_EXPR; | |
5283 | break; | |
5284 | case CPP_MINUS_EQ: | |
5285 | code = MINUS_EXPR; | |
5286 | break; | |
5287 | case CPP_LSHIFT_EQ: | |
5288 | code = LSHIFT_EXPR; | |
5289 | break; | |
5290 | case CPP_RSHIFT_EQ: | |
5291 | code = RSHIFT_EXPR; | |
5292 | break; | |
5293 | case CPP_AND_EQ: | |
5294 | code = BIT_AND_EXPR; | |
5295 | break; | |
5296 | case CPP_XOR_EQ: | |
5297 | code = BIT_XOR_EXPR; | |
5298 | break; | |
5299 | case CPP_OR_EQ: | |
5300 | code = BIT_IOR_EXPR; | |
5301 | break; | |
5302 | default: | |
5303 | return lhs; | |
5304 | } | |
5305 | c_parser_consume_token (parser); | |
c2255bc4 | 5306 | exp_location = c_parser_peek_token (parser)->location; |
27bf414c | 5307 | rhs = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 | 5308 | rhs = default_function_array_read_conversion (exp_location, rhs); |
32e8bb8e | 5309 | ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type, |
c2255bc4 AH |
5310 | code, exp_location, rhs.value, |
5311 | rhs.original_type); | |
27bf414c JM |
5312 | if (code == NOP_EXPR) |
5313 | ret.original_code = MODIFY_EXPR; | |
5314 | else | |
5315 | { | |
5316 | TREE_NO_WARNING (ret.value) = 1; | |
5317 | ret.original_code = ERROR_MARK; | |
5318 | } | |
6866c6e8 | 5319 | ret.original_type = NULL; |
27bf414c JM |
5320 | return ret; |
5321 | } | |
5322 | ||
5323 | /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER | |
5324 | is not NULL then it is an Objective-C message expression which is | |
5325 | the primary-expression starting the expression as an initializer. | |
5326 | ||
5327 | conditional-expression: | |
5328 | logical-OR-expression | |
5329 | logical-OR-expression ? expression : conditional-expression | |
5330 | ||
5331 | GNU extensions: | |
5332 | ||
5333 | conditional-expression: | |
5334 | logical-OR-expression ? : conditional-expression | |
5335 | */ | |
5336 | ||
5337 | static struct c_expr | |
5338 | c_parser_conditional_expression (c_parser *parser, struct c_expr *after) | |
5339 | { | |
5340 | struct c_expr cond, exp1, exp2, ret; | |
d166d4c3 | 5341 | location_t cond_loc, colon_loc, middle_loc; |
ba47d38d | 5342 | |
27bf414c | 5343 | gcc_assert (!after || c_dialect_objc ()); |
ba47d38d | 5344 | |
20906c66 | 5345 | cond = c_parser_binary_expression (parser, after, PREC_NONE); |
ba47d38d | 5346 | |
27bf414c JM |
5347 | if (c_parser_next_token_is_not (parser, CPP_QUERY)) |
5348 | return cond; | |
c2255bc4 | 5349 | cond_loc = c_parser_peek_token (parser)->location; |
ebfbbdc5 | 5350 | cond = default_function_array_read_conversion (cond_loc, cond); |
27bf414c JM |
5351 | c_parser_consume_token (parser); |
5352 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
5353 | { | |
8ce94e44 | 5354 | tree eptype = NULL_TREE; |
d166d4c3 AK |
5355 | |
5356 | middle_loc = c_parser_peek_token (parser)->location; | |
5357 | pedwarn (middle_loc, OPT_pedantic, | |
509c9d60 | 5358 | "ISO C forbids omitting the middle term of a ?: expression"); |
d166d4c3 | 5359 | warn_for_omitted_condop (middle_loc, cond.value); |
8ce94e44 JM |
5360 | if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR) |
5361 | { | |
5362 | eptype = TREE_TYPE (cond.value); | |
5363 | cond.value = TREE_OPERAND (cond.value, 0); | |
5364 | } | |
27bf414c | 5365 | /* Make sure first operand is calculated only once. */ |
928c19bb | 5366 | exp1.value = c_save_expr (default_conversion (cond.value)); |
8ce94e44 JM |
5367 | if (eptype) |
5368 | exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value); | |
6866c6e8 | 5369 | exp1.original_type = NULL; |
ba47d38d | 5370 | cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value); |
7d882b83 | 5371 | c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node; |
27bf414c JM |
5372 | } |
5373 | else | |
5374 | { | |
5375 | cond.value | |
85498824 | 5376 | = c_objc_common_truthvalue_conversion |
ba47d38d | 5377 | (cond_loc, default_conversion (cond.value)); |
7d882b83 | 5378 | c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node; |
46bdb9cf | 5379 | exp1 = c_parser_expression_conv (parser); |
ebfbbdc5 | 5380 | mark_exp_read (exp1.value); |
7d882b83 ILT |
5381 | c_inhibit_evaluation_warnings += |
5382 | ((cond.value == truthvalue_true_node) | |
5383 | - (cond.value == truthvalue_false_node)); | |
27bf414c | 5384 | } |
744aa42f ILT |
5385 | |
5386 | colon_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
5387 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
5388 | { | |
7d882b83 | 5389 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
27bf414c JM |
5390 | ret.value = error_mark_node; |
5391 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5392 | ret.original_type = NULL; |
27bf414c JM |
5393 | return ret; |
5394 | } | |
c2255bc4 AH |
5395 | { |
5396 | location_t exp2_loc = c_parser_peek_token (parser)->location; | |
5397 | exp2 = c_parser_conditional_expression (parser, NULL); | |
ebfbbdc5 | 5398 | exp2 = default_function_array_read_conversion (exp2_loc, exp2); |
c2255bc4 | 5399 | } |
7d882b83 | 5400 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
744aa42f | 5401 | ret.value = build_conditional_expr (colon_loc, cond.value, |
928c19bb | 5402 | cond.original_code == C_MAYBE_CONST_EXPR, |
d130ae11 ILT |
5403 | exp1.value, exp1.original_type, |
5404 | exp2.value, exp2.original_type); | |
27bf414c | 5405 | ret.original_code = ERROR_MARK; |
6866c6e8 ILT |
5406 | if (exp1.value == error_mark_node || exp2.value == error_mark_node) |
5407 | ret.original_type = NULL; | |
5408 | else | |
5409 | { | |
5410 | tree t1, t2; | |
5411 | ||
5412 | /* If both sides are enum type, the default conversion will have | |
5413 | made the type of the result be an integer type. We want to | |
5414 | remember the enum types we started with. */ | |
5415 | t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value); | |
5416 | t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value); | |
5417 | ret.original_type = ((t1 != error_mark_node | |
5418 | && t2 != error_mark_node | |
5419 | && (TYPE_MAIN_VARIANT (t1) | |
5420 | == TYPE_MAIN_VARIANT (t2))) | |
5421 | ? t1 | |
5422 | : NULL); | |
5423 | } | |
27bf414c JM |
5424 | return ret; |
5425 | } | |
5426 | ||
5427 | /* Parse a binary expression; that is, a logical-OR-expression (C90 | |
5428 | 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is | |
5429 | an Objective-C message expression which is the primary-expression | |
20906c66 JJ |
5430 | starting the expression as an initializer. PREC is the starting |
5431 | precedence, usually PREC_NONE. | |
27bf414c JM |
5432 | |
5433 | multiplicative-expression: | |
5434 | cast-expression | |
5435 | multiplicative-expression * cast-expression | |
5436 | multiplicative-expression / cast-expression | |
5437 | multiplicative-expression % cast-expression | |
5438 | ||
5439 | additive-expression: | |
5440 | multiplicative-expression | |
5441 | additive-expression + multiplicative-expression | |
5442 | additive-expression - multiplicative-expression | |
5443 | ||
5444 | shift-expression: | |
5445 | additive-expression | |
5446 | shift-expression << additive-expression | |
5447 | shift-expression >> additive-expression | |
5448 | ||
5449 | relational-expression: | |
5450 | shift-expression | |
5451 | relational-expression < shift-expression | |
5452 | relational-expression > shift-expression | |
5453 | relational-expression <= shift-expression | |
5454 | relational-expression >= shift-expression | |
5455 | ||
5456 | equality-expression: | |
5457 | relational-expression | |
5458 | equality-expression == relational-expression | |
5459 | equality-expression != relational-expression | |
5460 | ||
5461 | AND-expression: | |
5462 | equality-expression | |
5463 | AND-expression & equality-expression | |
5464 | ||
5465 | exclusive-OR-expression: | |
5466 | AND-expression | |
5467 | exclusive-OR-expression ^ AND-expression | |
5468 | ||
5469 | inclusive-OR-expression: | |
5470 | exclusive-OR-expression | |
5471 | inclusive-OR-expression | exclusive-OR-expression | |
5472 | ||
5473 | logical-AND-expression: | |
5474 | inclusive-OR-expression | |
5475 | logical-AND-expression && inclusive-OR-expression | |
5476 | ||
5477 | logical-OR-expression: | |
5478 | logical-AND-expression | |
5479 | logical-OR-expression || logical-AND-expression | |
5480 | */ | |
5481 | ||
5482 | static struct c_expr | |
20906c66 JJ |
5483 | c_parser_binary_expression (c_parser *parser, struct c_expr *after, |
5484 | enum c_parser_prec prec) | |
27bf414c JM |
5485 | { |
5486 | /* A binary expression is parsed using operator-precedence parsing, | |
5487 | with the operands being cast expressions. All the binary | |
5488 | operators are left-associative. Thus a binary expression is of | |
5489 | form: | |
5490 | ||
5491 | E0 op1 E1 op2 E2 ... | |
5492 | ||
5493 | which we represent on a stack. On the stack, the precedence | |
5494 | levels are strictly increasing. When a new operator is | |
5495 | encountered of higher precedence than that at the top of the | |
5496 | stack, it is pushed; its LHS is the top expression, and its RHS | |
5497 | is everything parsed until it is popped. When a new operator is | |
5498 | encountered with precedence less than or equal to that at the top | |
5499 | of the stack, triples E[i-1] op[i] E[i] are popped and replaced | |
5500 | by the result of the operation until the operator at the top of | |
5501 | the stack has lower precedence than the new operator or there is | |
5502 | only one element on the stack; then the top expression is the LHS | |
5503 | of the new operator. In the case of logical AND and OR | |
7d882b83 ILT |
5504 | expressions, we also need to adjust c_inhibit_evaluation_warnings |
5505 | as appropriate when the operators are pushed and popped. */ | |
27bf414c | 5506 | |
27bf414c JM |
5507 | struct { |
5508 | /* The expression at this stack level. */ | |
5509 | struct c_expr expr; | |
5510 | /* The precedence of the operator on its left, PREC_NONE at the | |
5511 | bottom of the stack. */ | |
20906c66 | 5512 | enum c_parser_prec prec; |
27bf414c JM |
5513 | /* The operation on its left. */ |
5514 | enum tree_code op; | |
ca80e52b EB |
5515 | /* The source location of this operation. */ |
5516 | location_t loc; | |
27bf414c JM |
5517 | } stack[NUM_PRECS]; |
5518 | int sp; | |
ba47d38d | 5519 | /* Location of the binary operator. */ |
1f6d0c60 | 5520 | location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
5521 | #define POP \ |
5522 | do { \ | |
5523 | switch (stack[sp].op) \ | |
5524 | { \ | |
5525 | case TRUTH_ANDIF_EXPR: \ | |
7d882b83 ILT |
5526 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5527 | == truthvalue_false_node); \ | |
27bf414c JM |
5528 | break; \ |
5529 | case TRUTH_ORIF_EXPR: \ | |
7d882b83 ILT |
5530 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
5531 | == truthvalue_true_node); \ | |
27bf414c JM |
5532 | break; \ |
5533 | default: \ | |
5534 | break; \ | |
5535 | } \ | |
f2a71bbc | 5536 | stack[sp - 1].expr \ |
ebfbbdc5 JJ |
5537 | = default_function_array_read_conversion (stack[sp - 1].loc, \ |
5538 | stack[sp - 1].expr); \ | |
f2a71bbc | 5539 | stack[sp].expr \ |
ebfbbdc5 JJ |
5540 | = default_function_array_read_conversion (stack[sp].loc, \ |
5541 | stack[sp].expr); \ | |
ca80e52b | 5542 | stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \ |
ba47d38d | 5543 | stack[sp].op, \ |
27bf414c JM |
5544 | stack[sp - 1].expr, \ |
5545 | stack[sp].expr); \ | |
5546 | sp--; \ | |
5547 | } while (0) | |
5548 | gcc_assert (!after || c_dialect_objc ()); | |
ca80e52b | 5549 | stack[0].loc = c_parser_peek_token (parser)->location; |
27bf414c | 5550 | stack[0].expr = c_parser_cast_expression (parser, after); |
20906c66 | 5551 | stack[0].prec = prec; |
27bf414c JM |
5552 | sp = 0; |
5553 | while (true) | |
5554 | { | |
20906c66 | 5555 | enum c_parser_prec oprec; |
27bf414c JM |
5556 | enum tree_code ocode; |
5557 | if (parser->error) | |
5558 | goto out; | |
5559 | switch (c_parser_peek_token (parser)->type) | |
5560 | { | |
5561 | case CPP_MULT: | |
5562 | oprec = PREC_MULT; | |
5563 | ocode = MULT_EXPR; | |
5564 | break; | |
5565 | case CPP_DIV: | |
5566 | oprec = PREC_MULT; | |
5567 | ocode = TRUNC_DIV_EXPR; | |
5568 | break; | |
5569 | case CPP_MOD: | |
5570 | oprec = PREC_MULT; | |
5571 | ocode = TRUNC_MOD_EXPR; | |
5572 | break; | |
5573 | case CPP_PLUS: | |
5574 | oprec = PREC_ADD; | |
5575 | ocode = PLUS_EXPR; | |
5576 | break; | |
5577 | case CPP_MINUS: | |
5578 | oprec = PREC_ADD; | |
5579 | ocode = MINUS_EXPR; | |
5580 | break; | |
5581 | case CPP_LSHIFT: | |
5582 | oprec = PREC_SHIFT; | |
5583 | ocode = LSHIFT_EXPR; | |
5584 | break; | |
5585 | case CPP_RSHIFT: | |
5586 | oprec = PREC_SHIFT; | |
5587 | ocode = RSHIFT_EXPR; | |
5588 | break; | |
5589 | case CPP_LESS: | |
5590 | oprec = PREC_REL; | |
5591 | ocode = LT_EXPR; | |
5592 | break; | |
5593 | case CPP_GREATER: | |
5594 | oprec = PREC_REL; | |
5595 | ocode = GT_EXPR; | |
5596 | break; | |
5597 | case CPP_LESS_EQ: | |
5598 | oprec = PREC_REL; | |
5599 | ocode = LE_EXPR; | |
5600 | break; | |
5601 | case CPP_GREATER_EQ: | |
5602 | oprec = PREC_REL; | |
5603 | ocode = GE_EXPR; | |
5604 | break; | |
5605 | case CPP_EQ_EQ: | |
5606 | oprec = PREC_EQ; | |
5607 | ocode = EQ_EXPR; | |
5608 | break; | |
5609 | case CPP_NOT_EQ: | |
5610 | oprec = PREC_EQ; | |
5611 | ocode = NE_EXPR; | |
5612 | break; | |
5613 | case CPP_AND: | |
5614 | oprec = PREC_BITAND; | |
5615 | ocode = BIT_AND_EXPR; | |
5616 | break; | |
5617 | case CPP_XOR: | |
5618 | oprec = PREC_BITXOR; | |
5619 | ocode = BIT_XOR_EXPR; | |
5620 | break; | |
5621 | case CPP_OR: | |
5622 | oprec = PREC_BITOR; | |
5623 | ocode = BIT_IOR_EXPR; | |
5624 | break; | |
5625 | case CPP_AND_AND: | |
5626 | oprec = PREC_LOGAND; | |
5627 | ocode = TRUTH_ANDIF_EXPR; | |
5628 | break; | |
5629 | case CPP_OR_OR: | |
5630 | oprec = PREC_LOGOR; | |
5631 | ocode = TRUTH_ORIF_EXPR; | |
5632 | break; | |
5633 | default: | |
5634 | /* Not a binary operator, so end of the binary | |
5635 | expression. */ | |
5636 | goto out; | |
5637 | } | |
ba47d38d | 5638 | binary_loc = c_parser_peek_token (parser)->location; |
27bf414c | 5639 | while (oprec <= stack[sp].prec) |
20906c66 JJ |
5640 | { |
5641 | if (sp == 0) | |
5642 | goto out; | |
5643 | POP; | |
5644 | } | |
5645 | c_parser_consume_token (parser); | |
27bf414c JM |
5646 | switch (ocode) |
5647 | { | |
5648 | case TRUTH_ANDIF_EXPR: | |
f2a71bbc | 5649 | stack[sp].expr |
ebfbbdc5 JJ |
5650 | = default_function_array_read_conversion (stack[sp].loc, |
5651 | stack[sp].expr); | |
85498824 | 5652 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5653 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5654 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5655 | == truthvalue_false_node); | |
27bf414c JM |
5656 | break; |
5657 | case TRUTH_ORIF_EXPR: | |
f2a71bbc | 5658 | stack[sp].expr |
ebfbbdc5 JJ |
5659 | = default_function_array_read_conversion (stack[sp].loc, |
5660 | stack[sp].expr); | |
85498824 | 5661 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 5662 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
5663 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
5664 | == truthvalue_true_node); | |
27bf414c JM |
5665 | break; |
5666 | default: | |
5667 | break; | |
5668 | } | |
5669 | sp++; | |
ca80e52b | 5670 | stack[sp].loc = binary_loc; |
27bf414c JM |
5671 | stack[sp].expr = c_parser_cast_expression (parser, NULL); |
5672 | stack[sp].prec = oprec; | |
5673 | stack[sp].op = ocode; | |
c2255bc4 | 5674 | stack[sp].loc = binary_loc; |
27bf414c JM |
5675 | } |
5676 | out: | |
5677 | while (sp > 0) | |
5678 | POP; | |
5679 | return stack[0].expr; | |
5680 | #undef POP | |
5681 | } | |
5682 | ||
5683 | /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not | |
5684 | NULL then it is an Objective-C message expression which is the | |
5685 | primary-expression starting the expression as an initializer. | |
5686 | ||
5687 | cast-expression: | |
5688 | unary-expression | |
5689 | ( type-name ) unary-expression | |
5690 | */ | |
5691 | ||
5692 | static struct c_expr | |
5693 | c_parser_cast_expression (c_parser *parser, struct c_expr *after) | |
5694 | { | |
c2255bc4 | 5695 | location_t cast_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5696 | gcc_assert (!after || c_dialect_objc ()); |
5697 | if (after) | |
c2255bc4 AH |
5698 | return c_parser_postfix_expression_after_primary (parser, |
5699 | cast_loc, *after); | |
27bf414c JM |
5700 | /* If the expression begins with a parenthesized type name, it may |
5701 | be either a cast or a compound literal; we need to see whether | |
5702 | the next character is '{' to tell the difference. If not, it is | |
29ce73cb PB |
5703 | an unary expression. Full detection of unknown typenames here |
5704 | would require a 3-token lookahead. */ | |
27bf414c JM |
5705 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) |
5706 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5707 | { | |
5708 | struct c_type_name *type_name; | |
5709 | struct c_expr ret; | |
f2a71bbc | 5710 | struct c_expr expr; |
27bf414c JM |
5711 | c_parser_consume_token (parser); |
5712 | type_name = c_parser_type_name (parser); | |
5713 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5714 | if (type_name == NULL) | |
5715 | { | |
5716 | ret.value = error_mark_node; | |
5717 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5718 | ret.original_type = NULL; |
27bf414c JM |
5719 | return ret; |
5720 | } | |
33c9159e AH |
5721 | |
5722 | /* Save casted types in the function's used types hash table. */ | |
8d8d1a28 | 5723 | used_types_insert (type_name->specs->type); |
33c9159e | 5724 | |
27bf414c | 5725 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
24b97832 | 5726 | return c_parser_postfix_expression_after_paren_type (parser, type_name, |
c2255bc4 AH |
5727 | cast_loc); |
5728 | { | |
5729 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
5730 | expr = c_parser_cast_expression (parser, NULL); | |
ebfbbdc5 | 5731 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 AH |
5732 | } |
5733 | ret.value = c_cast_expr (cast_loc, type_name, expr.value); | |
27bf414c | 5734 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5735 | ret.original_type = NULL; |
27bf414c JM |
5736 | return ret; |
5737 | } | |
5738 | else | |
5739 | return c_parser_unary_expression (parser); | |
5740 | } | |
5741 | ||
5742 | /* Parse an unary expression (C90 6.3.3, C99 6.5.3). | |
5743 | ||
5744 | unary-expression: | |
5745 | postfix-expression | |
5746 | ++ unary-expression | |
5747 | -- unary-expression | |
5748 | unary-operator cast-expression | |
5749 | sizeof unary-expression | |
5750 | sizeof ( type-name ) | |
5751 | ||
5752 | unary-operator: one of | |
5753 | & * + - ~ ! | |
5754 | ||
5755 | GNU extensions: | |
5756 | ||
5757 | unary-expression: | |
5758 | __alignof__ unary-expression | |
5759 | __alignof__ ( type-name ) | |
5760 | && identifier | |
5761 | ||
5762 | unary-operator: one of | |
5763 | __extension__ __real__ __imag__ | |
5764 | ||
5765 | In addition, the GNU syntax treats ++ and -- as unary operators, so | |
5766 | they may be applied to cast expressions with errors for non-lvalues | |
5767 | given later. */ | |
5768 | ||
5769 | static struct c_expr | |
5770 | c_parser_unary_expression (c_parser *parser) | |
5771 | { | |
5772 | int ext; | |
46bdb9cf | 5773 | struct c_expr ret, op; |
c2255bc4 AH |
5774 | location_t op_loc = c_parser_peek_token (parser)->location; |
5775 | location_t exp_loc; | |
6866c6e8 ILT |
5776 | ret.original_code = ERROR_MARK; |
5777 | ret.original_type = NULL; | |
27bf414c JM |
5778 | switch (c_parser_peek_token (parser)->type) |
5779 | { | |
5780 | case CPP_PLUS_PLUS: | |
5781 | c_parser_consume_token (parser); | |
c2255bc4 | 5782 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5783 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5784 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5785 | return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op); |
27bf414c JM |
5786 | case CPP_MINUS_MINUS: |
5787 | c_parser_consume_token (parser); | |
c2255bc4 | 5788 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5789 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5790 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5791 | return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op); |
27bf414c JM |
5792 | case CPP_AND: |
5793 | c_parser_consume_token (parser); | |
ebfbbdc5 JJ |
5794 | op = c_parser_cast_expression (parser, NULL); |
5795 | mark_exp_read (op.value); | |
5796 | return parser_build_unary_op (op_loc, ADDR_EXPR, op); | |
27bf414c JM |
5797 | case CPP_MULT: |
5798 | c_parser_consume_token (parser); | |
c2255bc4 | 5799 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5800 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5801 | op = default_function_array_read_conversion (exp_loc, op); |
dd865ef6 | 5802 | ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR); |
27bf414c JM |
5803 | return ret; |
5804 | case CPP_PLUS: | |
44c21c7f | 5805 | if (!c_dialect_objc () && !in_system_header) |
c2255bc4 | 5806 | warning_at (op_loc, |
3ba09659 AH |
5807 | OPT_Wtraditional, |
5808 | "traditional C rejects the unary plus operator"); | |
c7412148 | 5809 | c_parser_consume_token (parser); |
c2255bc4 | 5810 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5811 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5812 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5813 | return parser_build_unary_op (op_loc, CONVERT_EXPR, op); |
27bf414c JM |
5814 | case CPP_MINUS: |
5815 | c_parser_consume_token (parser); | |
c2255bc4 | 5816 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5817 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5818 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5819 | return parser_build_unary_op (op_loc, NEGATE_EXPR, op); |
27bf414c JM |
5820 | case CPP_COMPL: |
5821 | c_parser_consume_token (parser); | |
c2255bc4 | 5822 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5823 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5824 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5825 | return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op); |
27bf414c JM |
5826 | case CPP_NOT: |
5827 | c_parser_consume_token (parser); | |
c2255bc4 | 5828 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5829 | op = c_parser_cast_expression (parser, NULL); |
ebfbbdc5 | 5830 | op = default_function_array_read_conversion (exp_loc, op); |
c2255bc4 | 5831 | return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op); |
27bf414c JM |
5832 | case CPP_AND_AND: |
5833 | /* Refer to the address of a label as a pointer. */ | |
5834 | c_parser_consume_token (parser); | |
5835 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5836 | { | |
5837 | ret.value = finish_label_address_expr | |
c2255bc4 | 5838 | (c_parser_peek_token (parser)->value, op_loc); |
27bf414c | 5839 | c_parser_consume_token (parser); |
27bf414c JM |
5840 | } |
5841 | else | |
5842 | { | |
5843 | c_parser_error (parser, "expected identifier"); | |
5844 | ret.value = error_mark_node; | |
27bf414c | 5845 | } |
43f6dfd3 | 5846 | return ret; |
27bf414c JM |
5847 | case CPP_KEYWORD: |
5848 | switch (c_parser_peek_token (parser)->keyword) | |
5849 | { | |
5850 | case RID_SIZEOF: | |
5851 | return c_parser_sizeof_expression (parser); | |
5852 | case RID_ALIGNOF: | |
5853 | return c_parser_alignof_expression (parser); | |
5854 | case RID_EXTENSION: | |
5855 | c_parser_consume_token (parser); | |
5856 | ext = disable_extension_diagnostics (); | |
5857 | ret = c_parser_cast_expression (parser, NULL); | |
5858 | restore_extension_diagnostics (ext); | |
5859 | return ret; | |
5860 | case RID_REALPART: | |
5861 | c_parser_consume_token (parser); | |
c2255bc4 | 5862 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5863 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
5864 | op = default_function_array_conversion (exp_loc, op); |
5865 | return parser_build_unary_op (op_loc, REALPART_EXPR, op); | |
27bf414c JM |
5866 | case RID_IMAGPART: |
5867 | c_parser_consume_token (parser); | |
c2255bc4 | 5868 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 5869 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
5870 | op = default_function_array_conversion (exp_loc, op); |
5871 | return parser_build_unary_op (op_loc, IMAGPART_EXPR, op); | |
27bf414c JM |
5872 | default: |
5873 | return c_parser_postfix_expression (parser); | |
5874 | } | |
5875 | default: | |
5876 | return c_parser_postfix_expression (parser); | |
5877 | } | |
5878 | } | |
5879 | ||
5880 | /* Parse a sizeof expression. */ | |
5881 | ||
5882 | static struct c_expr | |
5883 | c_parser_sizeof_expression (c_parser *parser) | |
5884 | { | |
5885 | struct c_expr expr; | |
c7412148 | 5886 | location_t expr_loc; |
27bf414c JM |
5887 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF)); |
5888 | c_parser_consume_token (parser); | |
7d882b83 | 5889 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
5890 | in_sizeof++; |
5891 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
5892 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5893 | { | |
5894 | /* Either sizeof ( type-name ) or sizeof unary-expression | |
5895 | starting with a compound literal. */ | |
5896 | struct c_type_name *type_name; | |
5897 | c_parser_consume_token (parser); | |
c7412148 | 5898 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5899 | type_name = c_parser_type_name (parser); |
5900 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5901 | if (type_name == NULL) | |
5902 | { | |
5903 | struct c_expr ret; | |
7d882b83 | 5904 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
5905 | in_sizeof--; |
5906 | ret.value = error_mark_node; | |
5907 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5908 | ret.original_type = NULL; |
27bf414c JM |
5909 | return ret; |
5910 | } | |
5911 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5912 | { | |
5913 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
5914 | type_name, |
5915 | expr_loc); | |
27bf414c JM |
5916 | goto sizeof_expr; |
5917 | } | |
5918 | /* sizeof ( type-name ). */ | |
7d882b83 | 5919 | c_inhibit_evaluation_warnings--; |
27bf414c | 5920 | in_sizeof--; |
c2255bc4 | 5921 | return c_expr_sizeof_type (expr_loc, type_name); |
27bf414c JM |
5922 | } |
5923 | else | |
5924 | { | |
c7412148 | 5925 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5926 | expr = c_parser_unary_expression (parser); |
5927 | sizeof_expr: | |
7d882b83 | 5928 | c_inhibit_evaluation_warnings--; |
27bf414c | 5929 | in_sizeof--; |
ebfbbdc5 | 5930 | mark_exp_read (expr.value); |
27bf414c JM |
5931 | if (TREE_CODE (expr.value) == COMPONENT_REF |
5932 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 5933 | error_at (expr_loc, "%<sizeof%> applied to a bit-field"); |
c2255bc4 | 5934 | return c_expr_sizeof_expr (expr_loc, expr); |
27bf414c JM |
5935 | } |
5936 | } | |
5937 | ||
5938 | /* Parse an alignof expression. */ | |
5939 | ||
5940 | static struct c_expr | |
5941 | c_parser_alignof_expression (c_parser *parser) | |
5942 | { | |
5943 | struct c_expr expr; | |
c2255bc4 | 5944 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5945 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF)); |
5946 | c_parser_consume_token (parser); | |
7d882b83 | 5947 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
5948 | in_alignof++; |
5949 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
5950 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5951 | { | |
5952 | /* Either __alignof__ ( type-name ) or __alignof__ | |
5953 | unary-expression starting with a compound literal. */ | |
24b97832 | 5954 | location_t loc; |
27bf414c JM |
5955 | struct c_type_name *type_name; |
5956 | struct c_expr ret; | |
5957 | c_parser_consume_token (parser); | |
24b97832 | 5958 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5959 | type_name = c_parser_type_name (parser); |
5960 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
5961 | if (type_name == NULL) | |
5962 | { | |
5963 | struct c_expr ret; | |
7d882b83 | 5964 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
5965 | in_alignof--; |
5966 | ret.value = error_mark_node; | |
5967 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5968 | ret.original_type = NULL; |
27bf414c JM |
5969 | return ret; |
5970 | } | |
5971 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5972 | { | |
5973 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
5974 | type_name, |
5975 | loc); | |
27bf414c JM |
5976 | goto alignof_expr; |
5977 | } | |
5978 | /* alignof ( type-name ). */ | |
7d882b83 | 5979 | c_inhibit_evaluation_warnings--; |
27bf414c | 5980 | in_alignof--; |
c2255bc4 | 5981 | ret.value = c_alignof (loc, groktypename (type_name, NULL, NULL)); |
27bf414c | 5982 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5983 | ret.original_type = NULL; |
27bf414c JM |
5984 | return ret; |
5985 | } | |
5986 | else | |
5987 | { | |
5988 | struct c_expr ret; | |
5989 | expr = c_parser_unary_expression (parser); | |
5990 | alignof_expr: | |
ebfbbdc5 | 5991 | mark_exp_read (expr.value); |
7d882b83 | 5992 | c_inhibit_evaluation_warnings--; |
27bf414c | 5993 | in_alignof--; |
c2255bc4 | 5994 | ret.value = c_alignof_expr (loc, expr.value); |
27bf414c | 5995 | ret.original_code = ERROR_MARK; |
6866c6e8 | 5996 | ret.original_type = NULL; |
27bf414c JM |
5997 | return ret; |
5998 | } | |
5999 | } | |
6000 | ||
f90e8e2e | 6001 | /* Helper function to read arguments of builtins which are interfaces |
2205ed25 | 6002 | for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and |
f90e8e2e AS |
6003 | others. The name of the builtin is passed using BNAME parameter. |
6004 | Function returns true if there were no errors while parsing and | |
86785830 | 6005 | stores the arguments in CEXPR_LIST. */ |
f90e8e2e AS |
6006 | static bool |
6007 | c_parser_get_builtin_args (c_parser *parser, const char *bname, | |
86785830 | 6008 | VEC(c_expr_t,gc) **ret_cexpr_list) |
f90e8e2e AS |
6009 | { |
6010 | location_t loc = c_parser_peek_token (parser)->location; | |
86785830 AS |
6011 | VEC (c_expr_t,gc) *cexpr_list; |
6012 | c_expr_t expr; | |
f90e8e2e | 6013 | |
86785830 | 6014 | *ret_cexpr_list = NULL; |
f90e8e2e AS |
6015 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) |
6016 | { | |
6017 | error_at (loc, "cannot take address of %qs", bname); | |
6018 | return false; | |
6019 | } | |
6020 | ||
6021 | c_parser_consume_token (parser); | |
6022 | ||
6023 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
6024 | { | |
6025 | c_parser_consume_token (parser); | |
6026 | return true; | |
6027 | } | |
86785830 AS |
6028 | |
6029 | expr = c_parser_expr_no_commas (parser, NULL); | |
6030 | cexpr_list = VEC_alloc (c_expr_t, gc, 1); | |
6031 | C_EXPR_APPEND (cexpr_list, expr); | |
6032 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
6033 | { | |
6034 | c_parser_consume_token (parser); | |
6035 | expr = c_parser_expr_no_commas (parser, NULL); | |
6036 | C_EXPR_APPEND (cexpr_list, expr); | |
6037 | } | |
f90e8e2e AS |
6038 | |
6039 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6040 | return false; | |
6041 | ||
86785830 | 6042 | *ret_cexpr_list = cexpr_list; |
f90e8e2e AS |
6043 | return true; |
6044 | } | |
6045 | ||
6046 | ||
27bf414c JM |
6047 | /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2). |
6048 | ||
6049 | postfix-expression: | |
6050 | primary-expression | |
6051 | postfix-expression [ expression ] | |
6052 | postfix-expression ( argument-expression-list[opt] ) | |
6053 | postfix-expression . identifier | |
6054 | postfix-expression -> identifier | |
6055 | postfix-expression ++ | |
6056 | postfix-expression -- | |
6057 | ( type-name ) { initializer-list } | |
6058 | ( type-name ) { initializer-list , } | |
6059 | ||
6060 | argument-expression-list: | |
6061 | argument-expression | |
6062 | argument-expression-list , argument-expression | |
6063 | ||
6064 | primary-expression: | |
6065 | identifier | |
6066 | constant | |
6067 | string-literal | |
6068 | ( expression ) | |
6069 | ||
6070 | GNU extensions: | |
6071 | ||
6072 | primary-expression: | |
6073 | __func__ | |
6074 | (treated as a keyword in GNU C) | |
6075 | __FUNCTION__ | |
6076 | __PRETTY_FUNCTION__ | |
6077 | ( compound-statement ) | |
6078 | __builtin_va_arg ( assignment-expression , type-name ) | |
6079 | __builtin_offsetof ( type-name , offsetof-member-designator ) | |
6080 | __builtin_choose_expr ( assignment-expression , | |
6081 | assignment-expression , | |
6082 | assignment-expression ) | |
6083 | __builtin_types_compatible_p ( type-name , type-name ) | |
d4a83c10 | 6084 | __builtin_complex ( assignment-expression , assignment-expression ) |
f90e8e2e AS |
6085 | __builtin_shuffle ( assignment-expression , assignment-expression ) |
6086 | __builtin_shuffle ( assignment-expression , | |
6087 | assignment-expression , | |
6088 | assignment-expression, ) | |
27bf414c JM |
6089 | |
6090 | offsetof-member-designator: | |
6091 | identifier | |
6092 | offsetof-member-designator . identifier | |
6093 | offsetof-member-designator [ expression ] | |
6094 | ||
6095 | Objective-C: | |
6096 | ||
6097 | primary-expression: | |
6098 | [ objc-receiver objc-message-args ] | |
6099 | @selector ( objc-selector-arg ) | |
6100 | @protocol ( identifier ) | |
6101 | @encode ( type-name ) | |
6102 | objc-string-literal | |
bede2adc | 6103 | Classname . identifier |
27bf414c JM |
6104 | */ |
6105 | ||
6106 | static struct c_expr | |
6107 | c_parser_postfix_expression (c_parser *parser) | |
6108 | { | |
f90e8e2e | 6109 | struct c_expr expr, e1; |
27bf414c | 6110 | struct c_type_name *t1, *t2; |
c2255bc4 | 6111 | location_t loc = c_parser_peek_token (parser)->location;; |
6866c6e8 ILT |
6112 | expr.original_code = ERROR_MARK; |
6113 | expr.original_type = NULL; | |
27bf414c JM |
6114 | switch (c_parser_peek_token (parser)->type) |
6115 | { | |
6116 | case CPP_NUMBER: | |
754ccf7c | 6117 | expr.value = c_parser_peek_token (parser)->value; |
754ccf7c JJ |
6118 | loc = c_parser_peek_token (parser)->location; |
6119 | c_parser_consume_token (parser); | |
6120 | if (TREE_CODE (expr.value) == FIXED_CST | |
6121 | && !targetm.fixed_point_supported_p ()) | |
6122 | { | |
6123 | error_at (loc, "fixed-point types not supported for this target"); | |
6124 | expr.value = error_mark_node; | |
6125 | } | |
6126 | break; | |
27bf414c | 6127 | case CPP_CHAR: |
b6baa67d KVH |
6128 | case CPP_CHAR16: |
6129 | case CPP_CHAR32: | |
27bf414c JM |
6130 | case CPP_WCHAR: |
6131 | expr.value = c_parser_peek_token (parser)->value; | |
27bf414c JM |
6132 | c_parser_consume_token (parser); |
6133 | break; | |
6134 | case CPP_STRING: | |
b6baa67d KVH |
6135 | case CPP_STRING16: |
6136 | case CPP_STRING32: | |
27bf414c | 6137 | case CPP_WSTRING: |
2c6e3f55 | 6138 | case CPP_UTF8STRING: |
27bf414c JM |
6139 | expr.value = c_parser_peek_token (parser)->value; |
6140 | expr.original_code = STRING_CST; | |
6141 | c_parser_consume_token (parser); | |
6142 | break; | |
6143 | case CPP_OBJC_STRING: | |
6144 | gcc_assert (c_dialect_objc ()); | |
6145 | expr.value | |
6146 | = objc_build_string_object (c_parser_peek_token (parser)->value); | |
27bf414c JM |
6147 | c_parser_consume_token (parser); |
6148 | break; | |
6149 | case CPP_NAME: | |
bede2adc | 6150 | switch (c_parser_peek_token (parser)->id_kind) |
27bf414c | 6151 | { |
bede2adc NP |
6152 | case C_ID_ID: |
6153 | { | |
6154 | tree id = c_parser_peek_token (parser)->value; | |
6155 | c_parser_consume_token (parser); | |
6156 | expr.value = build_external_ref (loc, id, | |
6157 | (c_parser_peek_token (parser)->type | |
6158 | == CPP_OPEN_PAREN), | |
6159 | &expr.original_type); | |
6160 | break; | |
6161 | } | |
6162 | case C_ID_CLASSNAME: | |
6163 | { | |
6164 | /* Here we parse the Objective-C 2.0 Class.name dot | |
6165 | syntax. */ | |
6166 | tree class_name = c_parser_peek_token (parser)->value; | |
6167 | tree component; | |
6168 | c_parser_consume_token (parser); | |
6169 | gcc_assert (c_dialect_objc ()); | |
6170 | if (!c_parser_require (parser, CPP_DOT, "expected %<.%>")) | |
6171 | { | |
6172 | expr.value = error_mark_node; | |
6173 | break; | |
6174 | } | |
6175 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6176 | { | |
6177 | c_parser_error (parser, "expected identifier"); | |
6178 | expr.value = error_mark_node; | |
6179 | break; | |
6180 | } | |
6181 | component = c_parser_peek_token (parser)->value; | |
6182 | c_parser_consume_token (parser); | |
6183 | expr.value = objc_build_class_component_ref (class_name, | |
6184 | component); | |
6185 | break; | |
6186 | } | |
6187 | default: | |
27bf414c JM |
6188 | c_parser_error (parser, "expected expression"); |
6189 | expr.value = error_mark_node; | |
27bf414c JM |
6190 | break; |
6191 | } | |
27bf414c JM |
6192 | break; |
6193 | case CPP_OPEN_PAREN: | |
6194 | /* A parenthesized expression, statement expression or compound | |
6195 | literal. */ | |
6196 | if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE) | |
6197 | { | |
6198 | /* A statement expression. */ | |
6199 | tree stmt; | |
c2255bc4 | 6200 | location_t brace_loc; |
27bf414c | 6201 | c_parser_consume_token (parser); |
c2255bc4 | 6202 | brace_loc = c_parser_peek_token (parser)->location; |
27bf414c | 6203 | c_parser_consume_token (parser); |
38e01f9e | 6204 | if (!building_stmt_list_p ()) |
27bf414c | 6205 | { |
c2255bc4 | 6206 | error_at (loc, "braced-group within expression allowed " |
3ba09659 | 6207 | "only inside a function"); |
27bf414c JM |
6208 | parser->error = true; |
6209 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
6210 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6211 | expr.value = error_mark_node; | |
27bf414c JM |
6212 | break; |
6213 | } | |
6214 | stmt = c_begin_stmt_expr (); | |
6215 | c_parser_compound_statement_nostart (parser); | |
6216 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6217 | "expected %<)%>"); | |
b8698a0f | 6218 | pedwarn (loc, OPT_pedantic, |
509c9d60 | 6219 | "ISO C forbids braced-groups within expressions"); |
c2255bc4 | 6220 | expr.value = c_finish_stmt_expr (brace_loc, stmt); |
82c3c067 | 6221 | mark_exp_read (expr.value); |
27bf414c JM |
6222 | } |
6223 | else if (c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6224 | { | |
6225 | /* A compound literal. ??? Can we actually get here rather | |
6226 | than going directly to | |
6227 | c_parser_postfix_expression_after_paren_type from | |
6228 | elsewhere? */ | |
24b97832 | 6229 | location_t loc; |
27bf414c JM |
6230 | struct c_type_name *type_name; |
6231 | c_parser_consume_token (parser); | |
24b97832 | 6232 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6233 | type_name = c_parser_type_name (parser); |
6234 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6235 | "expected %<)%>"); | |
6236 | if (type_name == NULL) | |
6237 | { | |
6238 | expr.value = error_mark_node; | |
27bf414c JM |
6239 | } |
6240 | else | |
6241 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6242 | type_name, |
6243 | loc); | |
27bf414c JM |
6244 | } |
6245 | else | |
6246 | { | |
6247 | /* A parenthesized expression. */ | |
6248 | c_parser_consume_token (parser); | |
6249 | expr = c_parser_expression (parser); | |
6250 | if (TREE_CODE (expr.value) == MODIFY_EXPR) | |
6251 | TREE_NO_WARNING (expr.value) = 1; | |
928c19bb JM |
6252 | if (expr.original_code != C_MAYBE_CONST_EXPR) |
6253 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6254 | /* Don't change EXPR.ORIGINAL_TYPE. */ |
27bf414c JM |
6255 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
6256 | "expected %<)%>"); | |
6257 | } | |
6258 | break; | |
6259 | case CPP_KEYWORD: | |
6260 | switch (c_parser_peek_token (parser)->keyword) | |
6261 | { | |
6262 | case RID_FUNCTION_NAME: | |
6263 | case RID_PRETTY_FUNCTION_NAME: | |
6264 | case RID_C99_FUNCTION_NAME: | |
c2255bc4 | 6265 | expr.value = fname_decl (loc, |
3ba09659 | 6266 | c_parser_peek_token (parser)->keyword, |
27bf414c | 6267 | c_parser_peek_token (parser)->value); |
27bf414c JM |
6268 | c_parser_consume_token (parser); |
6269 | break; | |
6270 | case RID_VA_ARG: | |
6271 | c_parser_consume_token (parser); | |
6272 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6273 | { | |
6274 | expr.value = error_mark_node; | |
27bf414c JM |
6275 | break; |
6276 | } | |
6277 | e1 = c_parser_expr_no_commas (parser, NULL); | |
ebfbbdc5 | 6278 | mark_exp_read (e1.value); |
928c19bb | 6279 | e1.value = c_fully_fold (e1.value, false, NULL); |
27bf414c JM |
6280 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
6281 | { | |
6282 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6283 | expr.value = error_mark_node; | |
27bf414c JM |
6284 | break; |
6285 | } | |
72b5577d | 6286 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6287 | t1 = c_parser_type_name (parser); |
6288 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6289 | "expected %<)%>"); | |
6290 | if (t1 == NULL) | |
6291 | { | |
6292 | expr.value = error_mark_node; | |
27bf414c JM |
6293 | } |
6294 | else | |
6295 | { | |
928c19bb | 6296 | tree type_expr = NULL_TREE; |
c2255bc4 AH |
6297 | expr.value = c_build_va_arg (loc, e1.value, |
6298 | groktypename (t1, &type_expr, NULL)); | |
928c19bb JM |
6299 | if (type_expr) |
6300 | { | |
6301 | expr.value = build2 (C_MAYBE_CONST_EXPR, | |
6302 | TREE_TYPE (expr.value), type_expr, | |
6303 | expr.value); | |
6304 | C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true; | |
6305 | } | |
27bf414c JM |
6306 | } |
6307 | break; | |
6308 | case RID_OFFSETOF: | |
6309 | c_parser_consume_token (parser); | |
6310 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6311 | { | |
6312 | expr.value = error_mark_node; | |
27bf414c JM |
6313 | break; |
6314 | } | |
6315 | t1 = c_parser_type_name (parser); | |
6316 | if (t1 == NULL) | |
29ce73cb | 6317 | parser->error = true; |
27bf414c | 6318 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
29ce73cb PB |
6319 | gcc_assert (parser->error); |
6320 | if (parser->error) | |
27bf414c JM |
6321 | { |
6322 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6323 | expr.value = error_mark_node; | |
27bf414c JM |
6324 | break; |
6325 | } | |
29ce73cb | 6326 | |
27bf414c | 6327 | { |
928c19bb | 6328 | tree type = groktypename (t1, NULL, NULL); |
27bf414c JM |
6329 | tree offsetof_ref; |
6330 | if (type == error_mark_node) | |
6331 | offsetof_ref = error_mark_node; | |
6332 | else | |
c2255bc4 AH |
6333 | { |
6334 | offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node); | |
6335 | SET_EXPR_LOCATION (offsetof_ref, loc); | |
6336 | } | |
27bf414c JM |
6337 | /* Parse the second argument to __builtin_offsetof. We |
6338 | must have one identifier, and beyond that we want to | |
6339 | accept sub structure and sub array references. */ | |
6340 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
6341 | { | |
6342 | offsetof_ref = build_component_ref | |
c2255bc4 | 6343 | (loc, offsetof_ref, c_parser_peek_token (parser)->value); |
27bf414c JM |
6344 | c_parser_consume_token (parser); |
6345 | while (c_parser_next_token_is (parser, CPP_DOT) | |
6346 | || c_parser_next_token_is (parser, | |
634b5df5 JJ |
6347 | CPP_OPEN_SQUARE) |
6348 | || c_parser_next_token_is (parser, | |
6349 | CPP_DEREF)) | |
27bf414c | 6350 | { |
634b5df5 JJ |
6351 | if (c_parser_next_token_is (parser, CPP_DEREF)) |
6352 | { | |
6353 | loc = c_parser_peek_token (parser)->location; | |
c2255bc4 AH |
6354 | offsetof_ref = build_array_ref (loc, |
6355 | offsetof_ref, | |
6356 | integer_zero_node); | |
634b5df5 JJ |
6357 | goto do_dot; |
6358 | } | |
6359 | else if (c_parser_next_token_is (parser, CPP_DOT)) | |
27bf414c | 6360 | { |
634b5df5 | 6361 | do_dot: |
27bf414c JM |
6362 | c_parser_consume_token (parser); |
6363 | if (c_parser_next_token_is_not (parser, | |
6364 | CPP_NAME)) | |
6365 | { | |
6366 | c_parser_error (parser, "expected identifier"); | |
6367 | break; | |
6368 | } | |
6369 | offsetof_ref = build_component_ref | |
c2255bc4 | 6370 | (loc, offsetof_ref, |
27bf414c JM |
6371 | c_parser_peek_token (parser)->value); |
6372 | c_parser_consume_token (parser); | |
6373 | } | |
6374 | else | |
6375 | { | |
6376 | tree idx; | |
6a3799eb | 6377 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6378 | c_parser_consume_token (parser); |
6379 | idx = c_parser_expression (parser).value; | |
928c19bb | 6380 | idx = c_fully_fold (idx, false, NULL); |
27bf414c JM |
6381 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, |
6382 | "expected %<]%>"); | |
c2255bc4 | 6383 | offsetof_ref = build_array_ref (loc, offsetof_ref, idx); |
27bf414c JM |
6384 | } |
6385 | } | |
6386 | } | |
6387 | else | |
6388 | c_parser_error (parser, "expected identifier"); | |
6389 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6390 | "expected %<)%>"); | |
cf9e9959 | 6391 | expr.value = fold_offsetof (offsetof_ref); |
27bf414c JM |
6392 | } |
6393 | break; | |
6394 | case RID_CHOOSE_EXPR: | |
27bf414c | 6395 | { |
86785830 AS |
6396 | VEC (c_expr_t, gc) *cexpr_list; |
6397 | c_expr_t *e1_p, *e2_p, *e3_p; | |
6398 | tree c; | |
27bf414c | 6399 | |
f90e8e2e AS |
6400 | c_parser_consume_token (parser); |
6401 | if (!c_parser_get_builtin_args (parser, | |
6402 | "__builtin_choose_expr", | |
86785830 | 6403 | &cexpr_list)) |
f90e8e2e AS |
6404 | { |
6405 | expr.value = error_mark_node; | |
6406 | break; | |
6407 | } | |
6408 | ||
86785830 | 6409 | if (VEC_length (c_expr_t, cexpr_list) != 3) |
f90e8e2e AS |
6410 | { |
6411 | error_at (loc, "wrong number of arguments to " | |
6412 | "%<__builtin_choose_expr%>"); | |
6413 | expr.value = error_mark_node; | |
6414 | break; | |
6415 | } | |
86785830 AS |
6416 | |
6417 | e1_p = VEC_index (c_expr_t, cexpr_list, 0); | |
6418 | e2_p = VEC_index (c_expr_t, cexpr_list, 1); | |
6419 | e3_p = VEC_index (c_expr_t, cexpr_list, 2); | |
6420 | ||
6421 | c = e1_p->value; | |
6422 | mark_exp_read (e2_p->value); | |
6423 | mark_exp_read (e3_p->value); | |
928c19bb JM |
6424 | if (TREE_CODE (c) != INTEGER_CST |
6425 | || !INTEGRAL_TYPE_P (TREE_TYPE (c))) | |
3ba09659 AH |
6426 | error_at (loc, |
6427 | "first argument to %<__builtin_choose_expr%> not" | |
6428 | " a constant"); | |
928c19bb | 6429 | constant_expression_warning (c); |
86785830 | 6430 | expr = integer_zerop (c) ? *e3_p : *e2_p; |
f90e8e2e | 6431 | break; |
27bf414c | 6432 | } |
27bf414c JM |
6433 | case RID_TYPES_COMPATIBLE_P: |
6434 | c_parser_consume_token (parser); | |
6435 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6436 | { | |
6437 | expr.value = error_mark_node; | |
27bf414c JM |
6438 | break; |
6439 | } | |
6440 | t1 = c_parser_type_name (parser); | |
6441 | if (t1 == NULL) | |
6442 | { | |
6443 | expr.value = error_mark_node; | |
27bf414c JM |
6444 | break; |
6445 | } | |
6446 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6447 | { | |
6448 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6449 | expr.value = error_mark_node; | |
27bf414c JM |
6450 | break; |
6451 | } | |
6452 | t2 = c_parser_type_name (parser); | |
6453 | if (t2 == NULL) | |
6454 | { | |
6455 | expr.value = error_mark_node; | |
27bf414c JM |
6456 | break; |
6457 | } | |
6458 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6459 | "expected %<)%>"); | |
6460 | { | |
6461 | tree e1, e2; | |
6462 | ||
928c19bb JM |
6463 | e1 = TYPE_MAIN_VARIANT (groktypename (t1, NULL, NULL)); |
6464 | e2 = TYPE_MAIN_VARIANT (groktypename (t2, NULL, NULL)); | |
27bf414c | 6465 | |
9a9d280e AS |
6466 | expr.value |
6467 | = comptypes (e1, e2) ? integer_one_node : integer_zero_node; | |
27bf414c JM |
6468 | } |
6469 | break; | |
d4a83c10 | 6470 | case RID_BUILTIN_COMPLEX: |
86785830 AS |
6471 | { |
6472 | VEC(c_expr_t, gc) *cexpr_list; | |
6473 | c_expr_t *e1_p, *e2_p; | |
6474 | ||
f90e8e2e AS |
6475 | c_parser_consume_token (parser); |
6476 | if (!c_parser_get_builtin_args (parser, | |
6477 | "__builtin_complex", | |
86785830 | 6478 | &cexpr_list)) |
f90e8e2e AS |
6479 | { |
6480 | expr.value = error_mark_node; | |
6481 | break; | |
6482 | } | |
6483 | ||
86785830 | 6484 | if (VEC_length (c_expr_t, cexpr_list) != 2) |
f90e8e2e AS |
6485 | { |
6486 | error_at (loc, "wrong number of arguments to " | |
6487 | "%<__builtin_complex%>"); | |
6488 | expr.value = error_mark_node; | |
6489 | break; | |
6490 | } | |
86785830 AS |
6491 | |
6492 | e1_p = VEC_index (c_expr_t, cexpr_list, 0); | |
6493 | e2_p = VEC_index (c_expr_t, cexpr_list, 1); | |
6494 | ||
6495 | mark_exp_read (e1_p->value); | |
6496 | if (TREE_CODE (e1_p->value) == EXCESS_PRECISION_EXPR) | |
6497 | e1_p->value = convert (TREE_TYPE (e1_p->value), | |
6498 | TREE_OPERAND (e1_p->value, 0)); | |
6499 | mark_exp_read (e2_p->value); | |
6500 | if (TREE_CODE (e2_p->value) == EXCESS_PRECISION_EXPR) | |
6501 | e2_p->value = convert (TREE_TYPE (e2_p->value), | |
6502 | TREE_OPERAND (e2_p->value, 0)); | |
6503 | if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
6504 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
6505 | || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p->value)) | |
6506 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
6507 | { |
6508 | error_at (loc, "%<__builtin_complex%> operand " | |
6509 | "not of real binary floating-point type"); | |
6510 | expr.value = error_mark_node; | |
6511 | break; | |
6512 | } | |
86785830 AS |
6513 | if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p->value)) |
6514 | != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
6515 | { |
6516 | error_at (loc, | |
6517 | "%<__builtin_complex%> operands of different types"); | |
6518 | expr.value = error_mark_node; | |
6519 | break; | |
6520 | } | |
6521 | if (!flag_isoc99) | |
6522 | pedwarn (loc, OPT_pedantic, | |
6523 | "ISO C90 does not support complex types"); | |
6524 | expr.value = build2 (COMPLEX_EXPR, | |
86785830 AS |
6525 | build_complex_type |
6526 | (TYPE_MAIN_VARIANT | |
6527 | (TREE_TYPE (e1_p->value))), | |
6528 | e1_p->value, e2_p->value); | |
f90e8e2e AS |
6529 | break; |
6530 | } | |
6531 | case RID_BUILTIN_SHUFFLE: | |
6532 | { | |
86785830 AS |
6533 | VEC(c_expr_t,gc) *cexpr_list; |
6534 | ||
f90e8e2e AS |
6535 | c_parser_consume_token (parser); |
6536 | if (!c_parser_get_builtin_args (parser, | |
6537 | "__builtin_shuffle", | |
86785830 | 6538 | &cexpr_list)) |
f90e8e2e AS |
6539 | { |
6540 | expr.value = error_mark_node; | |
6541 | break; | |
6542 | } | |
6543 | ||
86785830 AS |
6544 | if (VEC_length (c_expr_t, cexpr_list) == 2) |
6545 | expr.value = | |
2205ed25 | 6546 | c_build_vec_perm_expr |
86785830 AS |
6547 | (loc, VEC_index (c_expr_t, cexpr_list, 0)->value, |
6548 | NULL_TREE, VEC_index (c_expr_t, cexpr_list, 1)->value); | |
6549 | ||
6550 | else if (VEC_length (c_expr_t, cexpr_list) == 3) | |
6551 | expr.value = | |
2205ed25 | 6552 | c_build_vec_perm_expr |
86785830 AS |
6553 | (loc, VEC_index (c_expr_t, cexpr_list, 0)->value, |
6554 | VEC_index (c_expr_t, cexpr_list, 1)->value, | |
6555 | VEC_index (c_expr_t, cexpr_list, 2)->value); | |
f90e8e2e AS |
6556 | else |
6557 | { | |
6558 | error_at (loc, "wrong number of arguments to " | |
6559 | "%<__builtin_shuffle%>"); | |
6560 | expr.value = error_mark_node; | |
6561 | } | |
6562 | break; | |
6563 | } | |
27bf414c JM |
6564 | case RID_AT_SELECTOR: |
6565 | gcc_assert (c_dialect_objc ()); | |
6566 | c_parser_consume_token (parser); | |
6567 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6568 | { | |
6569 | expr.value = error_mark_node; | |
27bf414c JM |
6570 | break; |
6571 | } | |
6572 | { | |
6573 | tree sel = c_parser_objc_selector_arg (parser); | |
6574 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6575 | "expected %<)%>"); | |
c2255bc4 | 6576 | expr.value = objc_build_selector_expr (loc, sel); |
27bf414c JM |
6577 | } |
6578 | break; | |
6579 | case RID_AT_PROTOCOL: | |
6580 | gcc_assert (c_dialect_objc ()); | |
6581 | c_parser_consume_token (parser); | |
6582 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6583 | { | |
6584 | expr.value = error_mark_node; | |
27bf414c JM |
6585 | break; |
6586 | } | |
6587 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6588 | { | |
6589 | c_parser_error (parser, "expected identifier"); | |
6590 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6591 | expr.value = error_mark_node; | |
27bf414c JM |
6592 | break; |
6593 | } | |
6594 | { | |
6595 | tree id = c_parser_peek_token (parser)->value; | |
6596 | c_parser_consume_token (parser); | |
6597 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6598 | "expected %<)%>"); | |
6599 | expr.value = objc_build_protocol_expr (id); | |
27bf414c JM |
6600 | } |
6601 | break; | |
6602 | case RID_AT_ENCODE: | |
6603 | /* Extension to support C-structures in the archiver. */ | |
6604 | gcc_assert (c_dialect_objc ()); | |
6605 | c_parser_consume_token (parser); | |
6606 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6607 | { | |
6608 | expr.value = error_mark_node; | |
27bf414c JM |
6609 | break; |
6610 | } | |
6611 | t1 = c_parser_type_name (parser); | |
6612 | if (t1 == NULL) | |
6613 | { | |
6614 | expr.value = error_mark_node; | |
27bf414c JM |
6615 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
6616 | break; | |
6617 | } | |
6618 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
6619 | "expected %<)%>"); | |
6620 | { | |
928c19bb | 6621 | tree type = groktypename (t1, NULL, NULL); |
27bf414c | 6622 | expr.value = objc_build_encode_expr (type); |
27bf414c JM |
6623 | } |
6624 | break; | |
6625 | default: | |
6626 | c_parser_error (parser, "expected expression"); | |
6627 | expr.value = error_mark_node; | |
27bf414c JM |
6628 | break; |
6629 | } | |
6630 | break; | |
6631 | case CPP_OPEN_SQUARE: | |
6632 | if (c_dialect_objc ()) | |
6633 | { | |
6634 | tree receiver, args; | |
6635 | c_parser_consume_token (parser); | |
6636 | receiver = c_parser_objc_receiver (parser); | |
6637 | args = c_parser_objc_message_args (parser); | |
6638 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6639 | "expected %<]%>"); | |
eb345401 | 6640 | expr.value = objc_build_message_expr (receiver, args); |
27bf414c JM |
6641 | break; |
6642 | } | |
6643 | /* Else fall through to report error. */ | |
6644 | default: | |
6645 | c_parser_error (parser, "expected expression"); | |
6646 | expr.value = error_mark_node; | |
27bf414c JM |
6647 | break; |
6648 | } | |
c2255bc4 | 6649 | return c_parser_postfix_expression_after_primary (parser, loc, expr); |
27bf414c JM |
6650 | } |
6651 | ||
6652 | /* Parse a postfix expression after a parenthesized type name: the | |
6653 | brace-enclosed initializer of a compound literal, possibly followed | |
6654 | by some postfix operators. This is separate because it is not | |
6655 | possible to tell until after the type name whether a cast | |
6656 | expression has a cast or a compound literal, or whether the operand | |
6657 | of sizeof is a parenthesized type name or starts with a compound | |
24b97832 ILT |
6658 | literal. TYPE_LOC is the location where TYPE_NAME starts--the |
6659 | location of the first token after the parentheses around the type | |
6660 | name. */ | |
27bf414c JM |
6661 | |
6662 | static struct c_expr | |
6663 | c_parser_postfix_expression_after_paren_type (c_parser *parser, | |
24b97832 ILT |
6664 | struct c_type_name *type_name, |
6665 | location_t type_loc) | |
27bf414c JM |
6666 | { |
6667 | tree type; | |
6668 | struct c_expr init; | |
928c19bb | 6669 | bool non_const; |
27bf414c | 6670 | struct c_expr expr; |
c7412148 | 6671 | location_t start_loc; |
928c19bb JM |
6672 | tree type_expr = NULL_TREE; |
6673 | bool type_expr_const = true; | |
c2255bc4 | 6674 | check_compound_literal_type (type_loc, type_name); |
27bf414c | 6675 | start_init (NULL_TREE, NULL, 0); |
928c19bb | 6676 | type = groktypename (type_name, &type_expr, &type_expr_const); |
c7412148 | 6677 | start_loc = c_parser_peek_token (parser)->location; |
85cad37c | 6678 | if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type)) |
27bf414c | 6679 | { |
24b97832 | 6680 | error_at (type_loc, "compound literal has variable size"); |
27bf414c JM |
6681 | type = error_mark_node; |
6682 | } | |
6683 | init = c_parser_braced_init (parser, type, false); | |
6684 | finish_init (); | |
6685 | maybe_warn_string_init (type, init); | |
6686 | ||
36c5e70a BE |
6687 | if (type != error_mark_node |
6688 | && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)) | |
6689 | && current_function_decl) | |
6690 | { | |
6691 | error ("compound literal qualified by address-space qualifier"); | |
6692 | type = error_mark_node; | |
6693 | } | |
6694 | ||
fcf73884 | 6695 | if (!flag_isoc99) |
509c9d60 | 6696 | pedwarn (start_loc, OPT_pedantic, "ISO C90 forbids compound literals"); |
928c19bb JM |
6697 | non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR) |
6698 | ? CONSTRUCTOR_NON_CONST (init.value) | |
6699 | : init.original_code == C_MAYBE_CONST_EXPR); | |
6700 | non_const |= !type_expr_const; | |
c2255bc4 | 6701 | expr.value = build_compound_literal (start_loc, type, init.value, non_const); |
27bf414c | 6702 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6703 | expr.original_type = NULL; |
928c19bb JM |
6704 | if (type_expr) |
6705 | { | |
6706 | if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR) | |
6707 | { | |
6708 | gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE); | |
6709 | C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr; | |
6710 | } | |
6711 | else | |
6712 | { | |
6713 | gcc_assert (!non_const); | |
6714 | expr.value = build2 (C_MAYBE_CONST_EXPR, type, | |
6715 | type_expr, expr.value); | |
6716 | } | |
6717 | } | |
c2255bc4 | 6718 | return c_parser_postfix_expression_after_primary (parser, start_loc, expr); |
27bf414c JM |
6719 | } |
6720 | ||
6721 | /* Parse a postfix expression after the initial primary or compound | |
c2255bc4 AH |
6722 | literal; that is, parse a series of postfix operators. |
6723 | ||
6724 | EXPR_LOC is the location of the primary expression. */ | |
27bf414c JM |
6725 | |
6726 | static struct c_expr | |
6727 | c_parser_postfix_expression_after_primary (c_parser *parser, | |
c2255bc4 | 6728 | location_t expr_loc, |
27bf414c JM |
6729 | struct c_expr expr) |
6730 | { | |
928c19bb | 6731 | struct c_expr orig_expr; |
bbbbb16a ILT |
6732 | tree ident, idx; |
6733 | VEC(tree,gc) *exprlist; | |
6734 | VEC(tree,gc) *origtypes; | |
27bf414c JM |
6735 | while (true) |
6736 | { | |
c2255bc4 | 6737 | location_t op_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6738 | switch (c_parser_peek_token (parser)->type) |
6739 | { | |
6740 | case CPP_OPEN_SQUARE: | |
6741 | /* Array reference. */ | |
6742 | c_parser_consume_token (parser); | |
6743 | idx = c_parser_expression (parser).value; | |
6744 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
6745 | "expected %<]%>"); | |
c2255bc4 | 6746 | expr.value = build_array_ref (op_loc, expr.value, idx); |
27bf414c | 6747 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6748 | expr.original_type = NULL; |
27bf414c JM |
6749 | break; |
6750 | case CPP_OPEN_PAREN: | |
6751 | /* Function call. */ | |
6752 | c_parser_consume_token (parser); | |
6753 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
bbbbb16a | 6754 | exprlist = NULL; |
27bf414c | 6755 | else |
bbbbb16a | 6756 | exprlist = c_parser_expr_list (parser, true, false, &origtypes); |
27bf414c JM |
6757 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
6758 | "expected %<)%>"); | |
928c19bb | 6759 | orig_expr = expr; |
ebfbbdc5 | 6760 | mark_exp_read (expr.value); |
c2255bc4 AH |
6761 | /* FIXME diagnostics: Ideally we want the FUNCNAME, not the |
6762 | "(" after the FUNCNAME, which is what we have now. */ | |
6763 | expr.value = build_function_call_vec (op_loc, expr.value, exprlist, | |
bbbbb16a | 6764 | origtypes); |
27bf414c | 6765 | expr.original_code = ERROR_MARK; |
928c19bb JM |
6766 | if (TREE_CODE (expr.value) == INTEGER_CST |
6767 | && TREE_CODE (orig_expr.value) == FUNCTION_DECL | |
6768 | && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL | |
6769 | && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P) | |
6770 | expr.original_code = C_MAYBE_CONST_EXPR; | |
6866c6e8 | 6771 | expr.original_type = NULL; |
bbbbb16a ILT |
6772 | if (exprlist != NULL) |
6773 | { | |
c166b898 ILT |
6774 | release_tree_vector (exprlist); |
6775 | release_tree_vector (origtypes); | |
bbbbb16a | 6776 | } |
27bf414c JM |
6777 | break; |
6778 | case CPP_DOT: | |
6779 | /* Structure element reference. */ | |
6780 | c_parser_consume_token (parser); | |
c2255bc4 | 6781 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
6782 | if (c_parser_next_token_is (parser, CPP_NAME)) |
6783 | ident = c_parser_peek_token (parser)->value; | |
6784 | else | |
6785 | { | |
6786 | c_parser_error (parser, "expected identifier"); | |
6787 | expr.value = error_mark_node; | |
6788 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6789 | expr.original_type = NULL; |
27bf414c JM |
6790 | return expr; |
6791 | } | |
6792 | c_parser_consume_token (parser); | |
c2255bc4 | 6793 | expr.value = build_component_ref (op_loc, expr.value, ident); |
27bf414c | 6794 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
6795 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
6796 | expr.original_type = NULL; | |
6797 | else | |
6798 | { | |
6799 | /* Remember the original type of a bitfield. */ | |
6800 | tree field = TREE_OPERAND (expr.value, 1); | |
6801 | if (TREE_CODE (field) != FIELD_DECL) | |
6802 | expr.original_type = NULL; | |
6803 | else | |
6804 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
6805 | } | |
27bf414c JM |
6806 | break; |
6807 | case CPP_DEREF: | |
6808 | /* Structure element reference. */ | |
6809 | c_parser_consume_token (parser); | |
c2255bc4 | 6810 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
6811 | if (c_parser_next_token_is (parser, CPP_NAME)) |
6812 | ident = c_parser_peek_token (parser)->value; | |
6813 | else | |
6814 | { | |
6815 | c_parser_error (parser, "expected identifier"); | |
6816 | expr.value = error_mark_node; | |
6817 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 6818 | expr.original_type = NULL; |
27bf414c JM |
6819 | return expr; |
6820 | } | |
6821 | c_parser_consume_token (parser); | |
c2255bc4 AH |
6822 | expr.value = build_component_ref (op_loc, |
6823 | build_indirect_ref (op_loc, | |
c9f9eb5d | 6824 | expr.value, |
dd865ef6 | 6825 | RO_ARROW), |
6a3799eb | 6826 | ident); |
27bf414c | 6827 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
6828 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
6829 | expr.original_type = NULL; | |
6830 | else | |
6831 | { | |
6832 | /* Remember the original type of a bitfield. */ | |
6833 | tree field = TREE_OPERAND (expr.value, 1); | |
6834 | if (TREE_CODE (field) != FIELD_DECL) | |
6835 | expr.original_type = NULL; | |
6836 | else | |
6837 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
6838 | } | |
27bf414c JM |
6839 | break; |
6840 | case CPP_PLUS_PLUS: | |
6841 | /* Postincrement. */ | |
6842 | c_parser_consume_token (parser); | |
ebfbbdc5 | 6843 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 | 6844 | expr.value = build_unary_op (op_loc, |
c9f9eb5d | 6845 | POSTINCREMENT_EXPR, expr.value, 0); |
27bf414c | 6846 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6847 | expr.original_type = NULL; |
27bf414c JM |
6848 | break; |
6849 | case CPP_MINUS_MINUS: | |
6850 | /* Postdecrement. */ | |
6851 | c_parser_consume_token (parser); | |
ebfbbdc5 | 6852 | expr = default_function_array_read_conversion (expr_loc, expr); |
c2255bc4 | 6853 | expr.value = build_unary_op (op_loc, |
c9f9eb5d | 6854 | POSTDECREMENT_EXPR, expr.value, 0); |
27bf414c | 6855 | expr.original_code = ERROR_MARK; |
6866c6e8 | 6856 | expr.original_type = NULL; |
27bf414c JM |
6857 | break; |
6858 | default: | |
6859 | return expr; | |
6860 | } | |
6861 | } | |
6862 | } | |
6863 | ||
6864 | /* Parse an expression (C90 6.3.17, C99 6.5.17). | |
6865 | ||
6866 | expression: | |
6867 | assignment-expression | |
6868 | expression , assignment-expression | |
6869 | */ | |
6870 | ||
6871 | static struct c_expr | |
6872 | c_parser_expression (c_parser *parser) | |
6873 | { | |
6874 | struct c_expr expr; | |
6875 | expr = c_parser_expr_no_commas (parser, NULL); | |
6876 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
6877 | { | |
6878 | struct c_expr next; | |
056928b2 | 6879 | tree lhsval; |
c2255bc4 AH |
6880 | location_t loc = c_parser_peek_token (parser)->location; |
6881 | location_t expr_loc; | |
27bf414c | 6882 | c_parser_consume_token (parser); |
c2255bc4 | 6883 | expr_loc = c_parser_peek_token (parser)->location; |
056928b2 JJ |
6884 | lhsval = expr.value; |
6885 | while (TREE_CODE (lhsval) == COMPOUND_EXPR) | |
6886 | lhsval = TREE_OPERAND (lhsval, 1); | |
6887 | if (DECL_P (lhsval) || handled_component_p (lhsval)) | |
6888 | mark_exp_read (lhsval); | |
27bf414c | 6889 | next = c_parser_expr_no_commas (parser, NULL); |
c2255bc4 AH |
6890 | next = default_function_array_conversion (expr_loc, next); |
6891 | expr.value = build_compound_expr (loc, expr.value, next.value); | |
27bf414c | 6892 | expr.original_code = COMPOUND_EXPR; |
81f40b79 | 6893 | expr.original_type = next.original_type; |
27bf414c JM |
6894 | } |
6895 | return expr; | |
6896 | } | |
6897 | ||
46bdb9cf JM |
6898 | /* Parse an expression and convert functions or arrays to |
6899 | pointers. */ | |
6900 | ||
6901 | static struct c_expr | |
6902 | c_parser_expression_conv (c_parser *parser) | |
6903 | { | |
6904 | struct c_expr expr; | |
c2255bc4 | 6905 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6906 | expr = c_parser_expression (parser); |
c2255bc4 | 6907 | expr = default_function_array_conversion (loc, expr); |
46bdb9cf JM |
6908 | return expr; |
6909 | } | |
6910 | ||
6911 | /* Parse a non-empty list of expressions. If CONVERT_P, convert | |
928c19bb | 6912 | functions and arrays to pointers. If FOLD_P, fold the expressions. |
27bf414c JM |
6913 | |
6914 | nonempty-expr-list: | |
6915 | assignment-expression | |
6916 | nonempty-expr-list , assignment-expression | |
6917 | */ | |
6918 | ||
bbbbb16a ILT |
6919 | static VEC(tree,gc) * |
6920 | c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p, | |
6921 | VEC(tree,gc) **p_orig_types) | |
27bf414c | 6922 | { |
bbbbb16a ILT |
6923 | VEC(tree,gc) *ret; |
6924 | VEC(tree,gc) *orig_types; | |
27bf414c | 6925 | struct c_expr expr; |
c2255bc4 | 6926 | location_t loc = c_parser_peek_token (parser)->location; |
bbbbb16a | 6927 | |
c166b898 | 6928 | ret = make_tree_vector (); |
bbbbb16a ILT |
6929 | if (p_orig_types == NULL) |
6930 | orig_types = NULL; | |
6931 | else | |
c166b898 | 6932 | orig_types = make_tree_vector (); |
bbbbb16a | 6933 | |
27bf414c | 6934 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 6935 | if (convert_p) |
ebfbbdc5 | 6936 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
6937 | if (fold_p) |
6938 | expr.value = c_fully_fold (expr.value, false, NULL); | |
bbbbb16a ILT |
6939 | VEC_quick_push (tree, ret, expr.value); |
6940 | if (orig_types != NULL) | |
6941 | VEC_quick_push (tree, orig_types, expr.original_type); | |
27bf414c JM |
6942 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
6943 | { | |
6944 | c_parser_consume_token (parser); | |
c2255bc4 | 6945 | loc = c_parser_peek_token (parser)->location; |
27bf414c | 6946 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 6947 | if (convert_p) |
ebfbbdc5 | 6948 | expr = default_function_array_read_conversion (loc, expr); |
928c19bb JM |
6949 | if (fold_p) |
6950 | expr.value = c_fully_fold (expr.value, false, NULL); | |
bbbbb16a ILT |
6951 | VEC_safe_push (tree, gc, ret, expr.value); |
6952 | if (orig_types != NULL) | |
6953 | VEC_safe_push (tree, gc, orig_types, expr.original_type); | |
27bf414c | 6954 | } |
bbbbb16a ILT |
6955 | if (orig_types != NULL) |
6956 | *p_orig_types = orig_types; | |
27bf414c JM |
6957 | return ret; |
6958 | } | |
27bf414c JM |
6959 | \f |
6960 | /* Parse Objective-C-specific constructs. */ | |
6961 | ||
6962 | /* Parse an objc-class-definition. | |
6963 | ||
6964 | objc-class-definition: | |
6965 | @interface identifier objc-superclass[opt] objc-protocol-refs[opt] | |
6966 | objc-class-instance-variables[opt] objc-methodprotolist @end | |
6967 | @implementation identifier objc-superclass[opt] | |
6968 | objc-class-instance-variables[opt] | |
6969 | @interface identifier ( identifier ) objc-protocol-refs[opt] | |
6970 | objc-methodprotolist @end | |
ec3e9f82 NP |
6971 | @interface identifier ( ) objc-protocol-refs[opt] |
6972 | objc-methodprotolist @end | |
27bf414c JM |
6973 | @implementation identifier ( identifier ) |
6974 | ||
6975 | objc-superclass: | |
6976 | : identifier | |
6977 | ||
6978 | "@interface identifier (" must start "@interface identifier ( | |
6979 | identifier ) ...": objc-methodprotolist in the first production may | |
0fa2e4df | 6980 | not start with a parenthesized identifier as a declarator of a data |
27bf414c JM |
6981 | definition with no declaration specifiers if the objc-superclass, |
6982 | objc-protocol-refs and objc-class-instance-variables are omitted. */ | |
6983 | ||
6984 | static void | |
c165dca7 | 6985 | c_parser_objc_class_definition (c_parser *parser, tree attributes) |
27bf414c JM |
6986 | { |
6987 | bool iface_p; | |
6988 | tree id1; | |
6989 | tree superclass; | |
6990 | if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE)) | |
6991 | iface_p = true; | |
6992 | else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION)) | |
6993 | iface_p = false; | |
6994 | else | |
6995 | gcc_unreachable (); | |
c165dca7 | 6996 | |
27bf414c JM |
6997 | c_parser_consume_token (parser); |
6998 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
6999 | { | |
7000 | c_parser_error (parser, "expected identifier"); | |
7001 | return; | |
7002 | } | |
7003 | id1 = c_parser_peek_token (parser)->value; | |
7004 | c_parser_consume_token (parser); | |
7005 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
7006 | { | |
ec3e9f82 | 7007 | /* We have a category or class extension. */ |
27bf414c JM |
7008 | tree id2; |
7009 | tree proto = NULL_TREE; | |
7010 | c_parser_consume_token (parser); | |
7011 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7012 | { | |
ec3e9f82 NP |
7013 | if (iface_p && c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
7014 | { | |
7015 | /* We have a class extension. */ | |
7016 | id2 = NULL_TREE; | |
7017 | } | |
7018 | else | |
7019 | { | |
7020 | c_parser_error (parser, "expected identifier or %<)%>"); | |
7021 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7022 | return; | |
7023 | } | |
7024 | } | |
7025 | else | |
7026 | { | |
7027 | id2 = c_parser_peek_token (parser)->value; | |
7028 | c_parser_consume_token (parser); | |
27bf414c | 7029 | } |
27bf414c JM |
7030 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
7031 | if (!iface_p) | |
7032 | { | |
7033 | objc_start_category_implementation (id1, id2); | |
7034 | return; | |
7035 | } | |
7036 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7037 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 7038 | objc_start_category_interface (id1, id2, proto, attributes); |
27bf414c JM |
7039 | c_parser_objc_methodprotolist (parser); |
7040 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
7041 | objc_finish_interface (); | |
7042 | return; | |
7043 | } | |
7044 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
7045 | { | |
7046 | c_parser_consume_token (parser); | |
7047 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7048 | { | |
7049 | c_parser_error (parser, "expected identifier"); | |
7050 | return; | |
7051 | } | |
7052 | superclass = c_parser_peek_token (parser)->value; | |
7053 | c_parser_consume_token (parser); | |
7054 | } | |
7055 | else | |
7056 | superclass = NULL_TREE; | |
7057 | if (iface_p) | |
7058 | { | |
7059 | tree proto = NULL_TREE; | |
7060 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7061 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 7062 | objc_start_class_interface (id1, superclass, proto, attributes); |
27bf414c JM |
7063 | } |
7064 | else | |
7065 | objc_start_class_implementation (id1, superclass); | |
7066 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
7067 | c_parser_objc_class_instance_variables (parser); | |
7068 | if (iface_p) | |
7069 | { | |
7070 | objc_continue_interface (); | |
7071 | c_parser_objc_methodprotolist (parser); | |
7072 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
7073 | objc_finish_interface (); | |
7074 | } | |
7075 | else | |
7076 | { | |
7077 | objc_continue_implementation (); | |
7078 | return; | |
7079 | } | |
7080 | } | |
7081 | ||
7082 | /* Parse objc-class-instance-variables. | |
7083 | ||
7084 | objc-class-instance-variables: | |
7085 | { objc-instance-variable-decl-list[opt] } | |
7086 | ||
7087 | objc-instance-variable-decl-list: | |
7088 | objc-visibility-spec | |
7089 | objc-instance-variable-decl ; | |
7090 | ; | |
7091 | objc-instance-variable-decl-list objc-visibility-spec | |
7092 | objc-instance-variable-decl-list objc-instance-variable-decl ; | |
7093 | objc-instance-variable-decl-list ; | |
7094 | ||
7095 | objc-visibility-spec: | |
7096 | @private | |
7097 | @protected | |
7098 | @public | |
7099 | ||
7100 | objc-instance-variable-decl: | |
7101 | struct-declaration | |
7102 | */ | |
7103 | ||
7104 | static void | |
7105 | c_parser_objc_class_instance_variables (c_parser *parser) | |
7106 | { | |
7107 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); | |
7108 | c_parser_consume_token (parser); | |
7109 | while (c_parser_next_token_is_not (parser, CPP_EOF)) | |
7110 | { | |
7111 | tree decls; | |
7112 | /* Parse any stray semicolon. */ | |
7113 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
7114 | { | |
b8698a0f | 7115 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
4e26ba90 | 7116 | "extra semicolon"); |
27bf414c JM |
7117 | c_parser_consume_token (parser); |
7118 | continue; | |
7119 | } | |
7120 | /* Stop if at the end of the instance variables. */ | |
7121 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
7122 | { | |
7123 | c_parser_consume_token (parser); | |
7124 | break; | |
7125 | } | |
7126 | /* Parse any objc-visibility-spec. */ | |
49b91f05 | 7127 | if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE)) |
27bf414c JM |
7128 | { |
7129 | c_parser_consume_token (parser); | |
c37d8c30 | 7130 | objc_set_visibility (OBJC_IVAR_VIS_PRIVATE); |
27bf414c JM |
7131 | continue; |
7132 | } | |
49b91f05 | 7133 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED)) |
27bf414c JM |
7134 | { |
7135 | c_parser_consume_token (parser); | |
c37d8c30 | 7136 | objc_set_visibility (OBJC_IVAR_VIS_PROTECTED); |
27bf414c JM |
7137 | continue; |
7138 | } | |
49b91f05 | 7139 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC)) |
27bf414c JM |
7140 | { |
7141 | c_parser_consume_token (parser); | |
c37d8c30 IS |
7142 | objc_set_visibility (OBJC_IVAR_VIS_PUBLIC); |
7143 | continue; | |
7144 | } | |
7145 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE)) | |
7146 | { | |
7147 | c_parser_consume_token (parser); | |
7148 | objc_set_visibility (OBJC_IVAR_VIS_PACKAGE); | |
27bf414c JM |
7149 | continue; |
7150 | } | |
bc4071dd RH |
7151 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
7152 | { | |
7153 | c_parser_pragma (parser, pragma_external); | |
7154 | continue; | |
7155 | } | |
7156 | ||
27bf414c JM |
7157 | /* Parse some comma-separated declarations. */ |
7158 | decls = c_parser_struct_declaration (parser); | |
4e26ba90 NP |
7159 | if (decls == NULL) |
7160 | { | |
7161 | /* There is a syntax error. We want to skip the offending | |
7162 | tokens up to the next ';' (included) or '}' | |
7163 | (excluded). */ | |
7164 | ||
7165 | /* First, skip manually a ')' or ']'. This is because they | |
7166 | reduce the nesting level, so c_parser_skip_until_found() | |
7167 | wouldn't be able to skip past them. */ | |
7168 | c_token *token = c_parser_peek_token (parser); | |
7169 | if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE) | |
7170 | c_parser_consume_token (parser); | |
7171 | ||
7172 | /* Then, do the standard skipping. */ | |
7173 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7174 | ||
7175 | /* We hopefully recovered. Start normal parsing again. */ | |
7176 | parser->error = false; | |
7177 | continue; | |
7178 | } | |
7179 | else | |
7180 | { | |
7181 | /* Comma-separated instance variables are chained together | |
7182 | in reverse order; add them one by one. */ | |
7183 | tree ivar = nreverse (decls); | |
7184 | for (; ivar; ivar = DECL_CHAIN (ivar)) | |
7185 | objc_add_instance_variable (copy_node (ivar)); | |
7186 | } | |
27bf414c JM |
7187 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
7188 | } | |
7189 | } | |
7190 | ||
7191 | /* Parse an objc-class-declaration. | |
7192 | ||
7193 | objc-class-declaration: | |
7194 | @class identifier-list ; | |
7195 | */ | |
7196 | ||
7197 | static void | |
7198 | c_parser_objc_class_declaration (c_parser *parser) | |
7199 | { | |
49b91f05 | 7200 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS)); |
27bf414c JM |
7201 | c_parser_consume_token (parser); |
7202 | /* Any identifiers, including those declared as type names, are OK | |
7203 | here. */ | |
7204 | while (true) | |
7205 | { | |
7206 | tree id; | |
7207 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7208 | { | |
7209 | c_parser_error (parser, "expected identifier"); | |
da57d1b9 NP |
7210 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); |
7211 | parser->error = false; | |
7212 | return; | |
27bf414c JM |
7213 | } |
7214 | id = c_parser_peek_token (parser)->value; | |
32dabdaf | 7215 | objc_declare_class (id); |
27bf414c JM |
7216 | c_parser_consume_token (parser); |
7217 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7218 | c_parser_consume_token (parser); | |
7219 | else | |
7220 | break; | |
7221 | } | |
7222 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
7223 | } |
7224 | ||
7225 | /* Parse an objc-alias-declaration. | |
7226 | ||
7227 | objc-alias-declaration: | |
7228 | @compatibility_alias identifier identifier ; | |
7229 | */ | |
7230 | ||
7231 | static void | |
7232 | c_parser_objc_alias_declaration (c_parser *parser) | |
7233 | { | |
7234 | tree id1, id2; | |
7235 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS)); | |
7236 | c_parser_consume_token (parser); | |
7237 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7238 | { | |
7239 | c_parser_error (parser, "expected identifier"); | |
7240 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7241 | return; | |
7242 | } | |
7243 | id1 = c_parser_peek_token (parser)->value; | |
7244 | c_parser_consume_token (parser); | |
7245 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7246 | { | |
7247 | c_parser_error (parser, "expected identifier"); | |
7248 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
7249 | return; | |
7250 | } | |
7251 | id2 = c_parser_peek_token (parser)->value; | |
7252 | c_parser_consume_token (parser); | |
7253 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
7254 | objc_declare_alias (id1, id2); | |
7255 | } | |
7256 | ||
7257 | /* Parse an objc-protocol-definition. | |
7258 | ||
7259 | objc-protocol-definition: | |
7260 | @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end | |
7261 | @protocol identifier-list ; | |
7262 | ||
7263 | "@protocol identifier ;" should be resolved as "@protocol | |
7264 | identifier-list ;": objc-methodprotolist may not start with a | |
7265 | semicolon in the first alternative if objc-protocol-refs are | |
7266 | omitted. */ | |
7267 | ||
7268 | static void | |
c165dca7 | 7269 | c_parser_objc_protocol_definition (c_parser *parser, tree attributes) |
27bf414c JM |
7270 | { |
7271 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL)); | |
c165dca7 | 7272 | |
27bf414c JM |
7273 | c_parser_consume_token (parser); |
7274 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7275 | { | |
7276 | c_parser_error (parser, "expected identifier"); | |
7277 | return; | |
7278 | } | |
7279 | if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
7280 | || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON) | |
7281 | { | |
27bf414c JM |
7282 | /* Any identifiers, including those declared as type names, are |
7283 | OK here. */ | |
7284 | while (true) | |
7285 | { | |
7286 | tree id; | |
7287 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7288 | { | |
7289 | c_parser_error (parser, "expected identifier"); | |
7290 | break; | |
7291 | } | |
7292 | id = c_parser_peek_token (parser)->value; | |
c59633d9 | 7293 | objc_declare_protocol (id, attributes); |
27bf414c JM |
7294 | c_parser_consume_token (parser); |
7295 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7296 | c_parser_consume_token (parser); | |
7297 | else | |
7298 | break; | |
7299 | } | |
7300 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
7301 | } |
7302 | else | |
7303 | { | |
7304 | tree id = c_parser_peek_token (parser)->value; | |
7305 | tree proto = NULL_TREE; | |
7306 | c_parser_consume_token (parser); | |
7307 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
7308 | proto = c_parser_objc_protocol_refs (parser); | |
0bacb8c7 | 7309 | parser->objc_pq_context = true; |
c165dca7 | 7310 | objc_start_protocol (id, proto, attributes); |
27bf414c JM |
7311 | c_parser_objc_methodprotolist (parser); |
7312 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
0bacb8c7 | 7313 | parser->objc_pq_context = false; |
27bf414c JM |
7314 | objc_finish_interface (); |
7315 | } | |
7316 | } | |
7317 | ||
7318 | /* Parse an objc-method-type. | |
7319 | ||
7320 | objc-method-type: | |
7321 | + | |
7322 | - | |
27bf414c | 7323 | |
249a82c4 NP |
7324 | Return true if it is a class method (+) and false if it is |
7325 | an instance method (-). | |
7326 | */ | |
7327 | static inline bool | |
27bf414c JM |
7328 | c_parser_objc_method_type (c_parser *parser) |
7329 | { | |
7330 | switch (c_parser_peek_token (parser)->type) | |
7331 | { | |
7332 | case CPP_PLUS: | |
7333 | c_parser_consume_token (parser); | |
249a82c4 | 7334 | return true; |
27bf414c JM |
7335 | case CPP_MINUS: |
7336 | c_parser_consume_token (parser); | |
249a82c4 | 7337 | return false; |
27bf414c JM |
7338 | default: |
7339 | gcc_unreachable (); | |
7340 | } | |
7341 | } | |
7342 | ||
7343 | /* Parse an objc-method-definition. | |
7344 | ||
7345 | objc-method-definition: | |
7346 | objc-method-type objc-method-decl ;[opt] compound-statement | |
7347 | */ | |
7348 | ||
7349 | static void | |
7350 | c_parser_objc_method_definition (c_parser *parser) | |
7351 | { | |
249a82c4 | 7352 | bool is_class_method = c_parser_objc_method_type (parser); |
a04a722b | 7353 | tree decl, attributes = NULL_TREE, expr = NULL_TREE; |
0bacb8c7 | 7354 | parser->objc_pq_context = true; |
a04a722b JM |
7355 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
7356 | &expr); | |
f7e71da5 IS |
7357 | if (decl == error_mark_node) |
7358 | return; /* Bail here. */ | |
7359 | ||
27bf414c JM |
7360 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
7361 | { | |
7362 | c_parser_consume_token (parser); | |
b8698a0f | 7363 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 7364 | "extra semicolon in method definition specified"); |
27bf414c | 7365 | } |
f7e71da5 | 7366 | |
8f078c08 AP |
7367 | if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
7368 | { | |
7369 | c_parser_error (parser, "expected %<{%>"); | |
7370 | return; | |
7371 | } | |
f7e71da5 | 7372 | |
0bacb8c7 | 7373 | parser->objc_pq_context = false; |
a04a722b | 7374 | if (objc_start_method_definition (is_class_method, decl, attributes, expr)) |
45547c7f NP |
7375 | { |
7376 | add_stmt (c_parser_compound_statement (parser)); | |
7377 | objc_finish_method_definition (current_function_decl); | |
7378 | } | |
7379 | else | |
7380 | { | |
7381 | /* This code is executed when we find a method definition | |
a26d8862 NP |
7382 | outside of an @implementation context (or invalid for other |
7383 | reasons). Parse the method (to keep going) but do not emit | |
7384 | any code. | |
45547c7f NP |
7385 | */ |
7386 | c_parser_compound_statement (parser); | |
7387 | } | |
27bf414c JM |
7388 | } |
7389 | ||
7390 | /* Parse an objc-methodprotolist. | |
7391 | ||
7392 | objc-methodprotolist: | |
7393 | empty | |
7394 | objc-methodprotolist objc-methodproto | |
7395 | objc-methodprotolist declaration | |
7396 | objc-methodprotolist ; | |
92902b1b IS |
7397 | @optional |
7398 | @required | |
27bf414c JM |
7399 | |
7400 | The declaration is a data definition, which may be missing | |
7401 | declaration specifiers under the same rules and diagnostics as | |
7402 | other data definitions outside functions, and the stray semicolon | |
7403 | is diagnosed the same way as a stray semicolon outside a | |
7404 | function. */ | |
7405 | ||
7406 | static void | |
7407 | c_parser_objc_methodprotolist (c_parser *parser) | |
7408 | { | |
7409 | while (true) | |
7410 | { | |
7411 | /* The list is terminated by @end. */ | |
7412 | switch (c_parser_peek_token (parser)->type) | |
7413 | { | |
7414 | case CPP_SEMICOLON: | |
b8698a0f | 7415 | pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic, |
509c9d60 | 7416 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
7417 | c_parser_consume_token (parser); |
7418 | break; | |
7419 | case CPP_PLUS: | |
7420 | case CPP_MINUS: | |
7421 | c_parser_objc_methodproto (parser); | |
7422 | break; | |
b9b58168 RH |
7423 | case CPP_PRAGMA: |
7424 | c_parser_pragma (parser, pragma_external); | |
7425 | break; | |
27bf414c JM |
7426 | case CPP_EOF: |
7427 | return; | |
7428 | default: | |
7429 | if (c_parser_next_token_is_keyword (parser, RID_AT_END)) | |
7430 | return; | |
668ea4b1 | 7431 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)) |
f614132b | 7432 | c_parser_objc_at_property_declaration (parser); |
92902b1b IS |
7433 | else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL)) |
7434 | { | |
7435 | objc_set_method_opt (true); | |
7436 | c_parser_consume_token (parser); | |
7437 | } | |
7438 | else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED)) | |
7439 | { | |
7440 | objc_set_method_opt (false); | |
7441 | c_parser_consume_token (parser); | |
7442 | } | |
7443 | else | |
7444 | c_parser_declaration_or_fndef (parser, false, false, true, | |
f05b9d93 | 7445 | false, true, NULL); |
27bf414c JM |
7446 | break; |
7447 | } | |
7448 | } | |
7449 | } | |
7450 | ||
7451 | /* Parse an objc-methodproto. | |
7452 | ||
7453 | objc-methodproto: | |
7454 | objc-method-type objc-method-decl ; | |
7455 | */ | |
7456 | ||
7457 | static void | |
7458 | c_parser_objc_methodproto (c_parser *parser) | |
7459 | { | |
249a82c4 | 7460 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 7461 | tree decl, attributes = NULL_TREE; |
249a82c4 | 7462 | |
27bf414c | 7463 | /* Remember protocol qualifiers in prototypes. */ |
0bacb8c7 | 7464 | parser->objc_pq_context = true; |
a04a722b JM |
7465 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
7466 | NULL); | |
f7e71da5 | 7467 | /* Forget protocol qualifiers now. */ |
0bacb8c7 | 7468 | parser->objc_pq_context = false; |
f7e71da5 IS |
7469 | |
7470 | /* Do not allow the presence of attributes to hide an erroneous | |
7471 | method implementation in the interface section. */ | |
7472 | if (!c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
7473 | { | |
7474 | c_parser_error (parser, "expected %<;%>"); | |
7475 | return; | |
7476 | } | |
7477 | ||
7478 | if (decl != error_mark_node) | |
249a82c4 | 7479 | objc_add_method_declaration (is_class_method, decl, attributes); |
f7e71da5 | 7480 | |
27bf414c JM |
7481 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
7482 | } | |
7483 | ||
f7e71da5 IS |
7484 | /* If we are at a position that method attributes may be present, check that |
7485 | there are not any parsed already (a syntax error) and then collect any | |
7486 | specified at the current location. Finally, if new attributes were present, | |
7487 | check that the next token is legal ( ';' for decls and '{' for defs). */ | |
7488 | ||
7489 | static bool | |
7490 | c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes) | |
7491 | { | |
7492 | bool bad = false; | |
7493 | if (*attributes) | |
7494 | { | |
7495 | c_parser_error (parser, | |
7496 | "method attributes must be specified at the end only"); | |
7497 | *attributes = NULL_TREE; | |
7498 | bad = true; | |
7499 | } | |
7500 | ||
7501 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7502 | *attributes = c_parser_attributes (parser); | |
7503 | ||
7504 | /* If there were no attributes here, just report any earlier error. */ | |
7505 | if (*attributes == NULL_TREE || bad) | |
7506 | return bad; | |
7507 | ||
7508 | /* If the attributes are followed by a ; or {, then just report any earlier | |
7509 | error. */ | |
7510 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
7511 | || c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
7512 | return bad; | |
7513 | ||
7514 | /* We've got attributes, but not at the end. */ | |
7515 | c_parser_error (parser, | |
7516 | "expected %<;%> or %<{%> after method attribute definition"); | |
7517 | return true; | |
7518 | } | |
7519 | ||
27bf414c JM |
7520 | /* Parse an objc-method-decl. |
7521 | ||
7522 | objc-method-decl: | |
7523 | ( objc-type-name ) objc-selector | |
7524 | objc-selector | |
7525 | ( objc-type-name ) objc-keyword-selector objc-optparmlist | |
7526 | objc-keyword-selector objc-optparmlist | |
f7e71da5 | 7527 | attributes |
27bf414c JM |
7528 | |
7529 | objc-keyword-selector: | |
7530 | objc-keyword-decl | |
7531 | objc-keyword-selector objc-keyword-decl | |
7532 | ||
7533 | objc-keyword-decl: | |
7534 | objc-selector : ( objc-type-name ) identifier | |
7535 | objc-selector : identifier | |
7536 | : ( objc-type-name ) identifier | |
7537 | : identifier | |
7538 | ||
7539 | objc-optparmlist: | |
7540 | objc-optparms objc-optellipsis | |
7541 | ||
7542 | objc-optparms: | |
7543 | empty | |
7544 | objc-opt-parms , parameter-declaration | |
7545 | ||
7546 | objc-optellipsis: | |
7547 | empty | |
7548 | , ... | |
7549 | */ | |
7550 | ||
7551 | static tree | |
a04a722b JM |
7552 | c_parser_objc_method_decl (c_parser *parser, bool is_class_method, |
7553 | tree *attributes, tree *expr) | |
27bf414c JM |
7554 | { |
7555 | tree type = NULL_TREE; | |
7556 | tree sel; | |
7557 | tree parms = NULL_TREE; | |
dbb74365 | 7558 | bool ellipsis = false; |
f7e71da5 | 7559 | bool attr_err = false; |
dbb74365 | 7560 | |
f7e71da5 | 7561 | *attributes = NULL_TREE; |
27bf414c JM |
7562 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
7563 | { | |
7564 | c_parser_consume_token (parser); | |
7565 | type = c_parser_objc_type_name (parser); | |
7566 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7567 | } | |
7568 | sel = c_parser_objc_selector (parser); | |
7569 | /* If there is no selector, or a colon follows, we have an | |
7570 | objc-keyword-selector. If there is a selector, and a colon does | |
7571 | not follow, that selector ends the objc-method-decl. */ | |
7572 | if (!sel || c_parser_next_token_is (parser, CPP_COLON)) | |
7573 | { | |
7574 | tree tsel = sel; | |
7575 | tree list = NULL_TREE; | |
27bf414c JM |
7576 | while (true) |
7577 | { | |
7578 | tree atype = NULL_TREE, id, keyworddecl; | |
f7e71da5 | 7579 | tree param_attr = NULL_TREE; |
27bf414c JM |
7580 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
7581 | break; | |
7582 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
7583 | { | |
7584 | c_parser_consume_token (parser); | |
7585 | atype = c_parser_objc_type_name (parser); | |
7586 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7587 | "expected %<)%>"); | |
7588 | } | |
f7e71da5 IS |
7589 | /* New ObjC allows attributes on method parameters. */ |
7590 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
7591 | param_attr = c_parser_attributes (parser); | |
27bf414c JM |
7592 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
7593 | { | |
7594 | c_parser_error (parser, "expected identifier"); | |
7595 | return error_mark_node; | |
7596 | } | |
7597 | id = c_parser_peek_token (parser)->value; | |
7598 | c_parser_consume_token (parser); | |
f7e71da5 | 7599 | keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr); |
27bf414c JM |
7600 | list = chainon (list, keyworddecl); |
7601 | tsel = c_parser_objc_selector (parser); | |
7602 | if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7603 | break; | |
7604 | } | |
f7e71da5 IS |
7605 | |
7606 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7607 | ||
27bf414c JM |
7608 | /* Parse the optional parameter list. Optional Objective-C |
7609 | method parameters follow the C syntax, and may include '...' | |
7610 | to denote a variable number of arguments. */ | |
7611 | parms = make_node (TREE_LIST); | |
27bf414c JM |
7612 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7613 | { | |
7614 | struct c_parm *parm; | |
7615 | c_parser_consume_token (parser); | |
7616 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
7617 | { | |
7618 | ellipsis = true; | |
7619 | c_parser_consume_token (parser); | |
f7e71da5 IS |
7620 | attr_err |= c_parser_objc_maybe_method_attributes |
7621 | (parser, attributes) ; | |
27bf414c JM |
7622 | break; |
7623 | } | |
7624 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
7625 | if (parm == NULL) | |
7626 | break; | |
7627 | parms = chainon (parms, | |
a04a722b | 7628 | build_tree_list (NULL_TREE, grokparm (parm, expr))); |
27bf414c | 7629 | } |
27bf414c JM |
7630 | sel = list; |
7631 | } | |
f7e71da5 IS |
7632 | else |
7633 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
7634 | ||
7635 | if (sel == NULL) | |
7636 | { | |
7637 | c_parser_error (parser, "objective-c method declaration is expected"); | |
7638 | return error_mark_node; | |
7639 | } | |
7640 | ||
7641 | if (attr_err) | |
7642 | return error_mark_node; | |
7643 | ||
249a82c4 | 7644 | return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis); |
27bf414c JM |
7645 | } |
7646 | ||
7647 | /* Parse an objc-type-name. | |
7648 | ||
7649 | objc-type-name: | |
7650 | objc-type-qualifiers[opt] type-name | |
7651 | objc-type-qualifiers[opt] | |
7652 | ||
7653 | objc-type-qualifiers: | |
7654 | objc-type-qualifier | |
7655 | objc-type-qualifiers objc-type-qualifier | |
7656 | ||
7657 | objc-type-qualifier: one of | |
7658 | in out inout bycopy byref oneway | |
7659 | */ | |
7660 | ||
7661 | static tree | |
7662 | c_parser_objc_type_name (c_parser *parser) | |
7663 | { | |
7664 | tree quals = NULL_TREE; | |
d75d71e0 | 7665 | struct c_type_name *type_name = NULL; |
27bf414c JM |
7666 | tree type = NULL_TREE; |
7667 | while (true) | |
7668 | { | |
7669 | c_token *token = c_parser_peek_token (parser); | |
7670 | if (token->type == CPP_KEYWORD | |
7671 | && (token->keyword == RID_IN | |
7672 | || token->keyword == RID_OUT | |
7673 | || token->keyword == RID_INOUT | |
7674 | || token->keyword == RID_BYCOPY | |
7675 | || token->keyword == RID_BYREF | |
7676 | || token->keyword == RID_ONEWAY)) | |
7677 | { | |
71fc71d8 | 7678 | quals = chainon (build_tree_list (NULL_TREE, token->value), quals); |
27bf414c JM |
7679 | c_parser_consume_token (parser); |
7680 | } | |
7681 | else | |
7682 | break; | |
7683 | } | |
29ce73cb | 7684 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
d75d71e0 ILT |
7685 | type_name = c_parser_type_name (parser); |
7686 | if (type_name) | |
928c19bb | 7687 | type = groktypename (type_name, NULL, NULL); |
046608a3 NP |
7688 | |
7689 | /* If the type is unknown, and error has already been produced and | |
7690 | we need to recover from the error. In that case, use NULL_TREE | |
7691 | for the type, as if no type had been specified; this will use the | |
7692 | default type ('id') which is good for error recovery. */ | |
7693 | if (type == error_mark_node) | |
7694 | type = NULL_TREE; | |
7695 | ||
27bf414c JM |
7696 | return build_tree_list (quals, type); |
7697 | } | |
7698 | ||
7699 | /* Parse objc-protocol-refs. | |
7700 | ||
7701 | objc-protocol-refs: | |
7702 | < identifier-list > | |
7703 | */ | |
7704 | ||
7705 | static tree | |
7706 | c_parser_objc_protocol_refs (c_parser *parser) | |
7707 | { | |
7708 | tree list = NULL_TREE; | |
7709 | gcc_assert (c_parser_next_token_is (parser, CPP_LESS)); | |
7710 | c_parser_consume_token (parser); | |
7711 | /* Any identifiers, including those declared as type names, are OK | |
7712 | here. */ | |
7713 | while (true) | |
7714 | { | |
7715 | tree id; | |
7716 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7717 | { | |
7718 | c_parser_error (parser, "expected identifier"); | |
7719 | break; | |
7720 | } | |
7721 | id = c_parser_peek_token (parser)->value; | |
7722 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
7723 | c_parser_consume_token (parser); | |
7724 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
7725 | c_parser_consume_token (parser); | |
7726 | else | |
7727 | break; | |
7728 | } | |
7729 | c_parser_require (parser, CPP_GREATER, "expected %<>%>"); | |
7730 | return list; | |
7731 | } | |
7732 | ||
437c2322 | 7733 | /* Parse an objc-try-catch-finally-statement. |
27bf414c | 7734 | |
437c2322 | 7735 | objc-try-catch-finally-statement: |
27bf414c JM |
7736 | @try compound-statement objc-catch-list[opt] |
7737 | @try compound-statement objc-catch-list[opt] @finally compound-statement | |
7738 | ||
7739 | objc-catch-list: | |
437c2322 NP |
7740 | @catch ( objc-catch-parameter-declaration ) compound-statement |
7741 | objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement | |
7742 | ||
7743 | objc-catch-parameter-declaration: | |
7744 | parameter-declaration | |
7745 | '...' | |
7746 | ||
7747 | where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS. | |
7748 | ||
7749 | PS: This function is identical to cp_parser_objc_try_catch_finally_statement | |
7750 | for C++. Keep them in sync. */ | |
27bf414c JM |
7751 | |
7752 | static void | |
437c2322 | 7753 | c_parser_objc_try_catch_finally_statement (c_parser *parser) |
27bf414c | 7754 | { |
437c2322 | 7755 | location_t location; |
27bf414c | 7756 | tree stmt; |
437c2322 | 7757 | |
49b91f05 | 7758 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY)); |
27bf414c | 7759 | c_parser_consume_token (parser); |
437c2322 | 7760 | location = c_parser_peek_token (parser)->location; |
46270f14 | 7761 | objc_maybe_warn_exceptions (location); |
27bf414c | 7762 | stmt = c_parser_compound_statement (parser); |
437c2322 NP |
7763 | objc_begin_try_stmt (location, stmt); |
7764 | ||
49b91f05 | 7765 | while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH)) |
27bf414c JM |
7766 | { |
7767 | struct c_parm *parm; | |
437c2322 NP |
7768 | tree parameter_declaration = error_mark_node; |
7769 | bool seen_open_paren = false; | |
7770 | ||
27bf414c JM |
7771 | c_parser_consume_token (parser); |
7772 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
437c2322 NP |
7773 | seen_open_paren = true; |
7774 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
27bf414c | 7775 | { |
437c2322 NP |
7776 | /* We have "@catch (...)" (where the '...' are literally |
7777 | what is in the code). Skip the '...'. | |
7778 | parameter_declaration is set to NULL_TREE, and | |
7779 | objc_being_catch_clauses() knows that that means | |
7780 | '...'. */ | |
7781 | c_parser_consume_token (parser); | |
7782 | parameter_declaration = NULL_TREE; | |
27bf414c | 7783 | } |
437c2322 NP |
7784 | else |
7785 | { | |
7786 | /* We have "@catch (NSException *exception)" or something | |
7787 | like that. Parse the parameter declaration. */ | |
7788 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
7789 | if (parm == NULL) | |
7790 | parameter_declaration = error_mark_node; | |
7791 | else | |
a04a722b | 7792 | parameter_declaration = grokparm (parm, NULL); |
437c2322 NP |
7793 | } |
7794 | if (seen_open_paren) | |
7795 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
7796 | else | |
7797 | { | |
7798 | /* If there was no open parenthesis, we are recovering from | |
7799 | an error, and we are trying to figure out what mistake | |
7800 | the user has made. */ | |
7801 | ||
7802 | /* If there is an immediate closing parenthesis, the user | |
7803 | probably forgot the opening one (ie, they typed "@catch | |
7804 | NSException *e)". Parse the closing parenthesis and keep | |
7805 | going. */ | |
7806 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
7807 | c_parser_consume_token (parser); | |
7808 | ||
7809 | /* If these is no immediate closing parenthesis, the user | |
7810 | probably doesn't know that parenthesis are required at | |
7811 | all (ie, they typed "@catch NSException *e"). So, just | |
7812 | forget about the closing parenthesis and keep going. */ | |
7813 | } | |
7814 | objc_begin_catch_clause (parameter_declaration); | |
27bf414c JM |
7815 | if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
7816 | c_parser_compound_statement_nostart (parser); | |
7817 | objc_finish_catch_clause (); | |
7818 | } | |
7819 | if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY)) | |
7820 | { | |
27bf414c | 7821 | c_parser_consume_token (parser); |
437c2322 NP |
7822 | location = c_parser_peek_token (parser)->location; |
7823 | stmt = c_parser_compound_statement (parser); | |
7824 | objc_build_finally_clause (location, stmt); | |
27bf414c JM |
7825 | } |
7826 | objc_finish_try_stmt (); | |
7827 | } | |
7828 | ||
7829 | /* Parse an objc-synchronized-statement. | |
7830 | ||
7831 | objc-synchronized-statement: | |
7832 | @synchronized ( expression ) compound-statement | |
7833 | */ | |
7834 | ||
7835 | static void | |
7836 | c_parser_objc_synchronized_statement (c_parser *parser) | |
7837 | { | |
7838 | location_t loc; | |
7839 | tree expr, stmt; | |
7840 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED)); | |
7841 | c_parser_consume_token (parser); | |
7842 | loc = c_parser_peek_token (parser)->location; | |
46270f14 | 7843 | objc_maybe_warn_exceptions (loc); |
27bf414c JM |
7844 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
7845 | { | |
7846 | expr = c_parser_expression (parser).value; | |
928c19bb | 7847 | expr = c_fully_fold (expr, false, NULL); |
27bf414c JM |
7848 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
7849 | } | |
7850 | else | |
7851 | expr = error_mark_node; | |
7852 | stmt = c_parser_compound_statement (parser); | |
7853 | objc_build_synchronized (loc, expr, stmt); | |
7854 | } | |
7855 | ||
7856 | /* Parse an objc-selector; return NULL_TREE without an error if the | |
7857 | next token is not an objc-selector. | |
7858 | ||
7859 | objc-selector: | |
7860 | identifier | |
7861 | one of | |
7862 | enum struct union if else while do for switch case default | |
7863 | break continue return goto asm sizeof typeof __alignof | |
7864 | unsigned long const short volatile signed restrict _Complex | |
7865 | in out inout bycopy byref oneway int char float double void _Bool | |
7866 | ||
7867 | ??? Why this selection of keywords but not, for example, storage | |
7868 | class specifiers? */ | |
7869 | ||
7870 | static tree | |
7871 | c_parser_objc_selector (c_parser *parser) | |
7872 | { | |
7873 | c_token *token = c_parser_peek_token (parser); | |
7874 | tree value = token->value; | |
7875 | if (token->type == CPP_NAME) | |
7876 | { | |
7877 | c_parser_consume_token (parser); | |
7878 | return value; | |
7879 | } | |
7880 | if (token->type != CPP_KEYWORD) | |
7881 | return NULL_TREE; | |
7882 | switch (token->keyword) | |
7883 | { | |
7884 | case RID_ENUM: | |
7885 | case RID_STRUCT: | |
7886 | case RID_UNION: | |
7887 | case RID_IF: | |
7888 | case RID_ELSE: | |
7889 | case RID_WHILE: | |
7890 | case RID_DO: | |
7891 | case RID_FOR: | |
7892 | case RID_SWITCH: | |
7893 | case RID_CASE: | |
7894 | case RID_DEFAULT: | |
7895 | case RID_BREAK: | |
7896 | case RID_CONTINUE: | |
7897 | case RID_RETURN: | |
7898 | case RID_GOTO: | |
7899 | case RID_ASM: | |
7900 | case RID_SIZEOF: | |
7901 | case RID_TYPEOF: | |
7902 | case RID_ALIGNOF: | |
7903 | case RID_UNSIGNED: | |
7904 | case RID_LONG: | |
a6766312 | 7905 | case RID_INT128: |
27bf414c JM |
7906 | case RID_CONST: |
7907 | case RID_SHORT: | |
7908 | case RID_VOLATILE: | |
7909 | case RID_SIGNED: | |
7910 | case RID_RESTRICT: | |
7911 | case RID_COMPLEX: | |
7912 | case RID_IN: | |
7913 | case RID_OUT: | |
7914 | case RID_INOUT: | |
7915 | case RID_BYCOPY: | |
7916 | case RID_BYREF: | |
7917 | case RID_ONEWAY: | |
7918 | case RID_INT: | |
7919 | case RID_CHAR: | |
7920 | case RID_FLOAT: | |
7921 | case RID_DOUBLE: | |
7922 | case RID_VOID: | |
7923 | case RID_BOOL: | |
7924 | c_parser_consume_token (parser); | |
7925 | return value; | |
7926 | default: | |
7927 | return NULL_TREE; | |
7928 | } | |
7929 | } | |
7930 | ||
7931 | /* Parse an objc-selector-arg. | |
7932 | ||
7933 | objc-selector-arg: | |
7934 | objc-selector | |
7935 | objc-keywordname-list | |
7936 | ||
7937 | objc-keywordname-list: | |
7938 | objc-keywordname | |
7939 | objc-keywordname-list objc-keywordname | |
7940 | ||
7941 | objc-keywordname: | |
7942 | objc-selector : | |
7943 | : | |
7944 | */ | |
7945 | ||
7946 | static tree | |
7947 | c_parser_objc_selector_arg (c_parser *parser) | |
7948 | { | |
7949 | tree sel = c_parser_objc_selector (parser); | |
7950 | tree list = NULL_TREE; | |
7951 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7952 | return sel; | |
7953 | while (true) | |
7954 | { | |
7955 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
7956 | return list; | |
7957 | list = chainon (list, build_tree_list (sel, NULL_TREE)); | |
7958 | sel = c_parser_objc_selector (parser); | |
7959 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
7960 | break; | |
7961 | } | |
7962 | return list; | |
7963 | } | |
7964 | ||
7965 | /* Parse an objc-receiver. | |
7966 | ||
7967 | objc-receiver: | |
7968 | expression | |
7969 | class-name | |
7970 | type-name | |
7971 | */ | |
7972 | ||
7973 | static tree | |
7974 | c_parser_objc_receiver (c_parser *parser) | |
7975 | { | |
7976 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
7977 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME | |
7978 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
7979 | { | |
7980 | tree id = c_parser_peek_token (parser)->value; | |
7981 | c_parser_consume_token (parser); | |
7982 | return objc_get_class_reference (id); | |
7983 | } | |
928c19bb | 7984 | return c_fully_fold (c_parser_expression (parser).value, false, NULL); |
27bf414c JM |
7985 | } |
7986 | ||
7987 | /* Parse objc-message-args. | |
7988 | ||
7989 | objc-message-args: | |
7990 | objc-selector | |
7991 | objc-keywordarg-list | |
7992 | ||
7993 | objc-keywordarg-list: | |
7994 | objc-keywordarg | |
7995 | objc-keywordarg-list objc-keywordarg | |
7996 | ||
7997 | objc-keywordarg: | |
7998 | objc-selector : objc-keywordexpr | |
7999 | : objc-keywordexpr | |
8000 | */ | |
8001 | ||
8002 | static tree | |
8003 | c_parser_objc_message_args (c_parser *parser) | |
8004 | { | |
8005 | tree sel = c_parser_objc_selector (parser); | |
8006 | tree list = NULL_TREE; | |
8007 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8008 | return sel; | |
8009 | while (true) | |
8010 | { | |
8011 | tree keywordexpr; | |
8012 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
0a7d7dea | 8013 | return error_mark_node; |
27bf414c JM |
8014 | keywordexpr = c_parser_objc_keywordexpr (parser); |
8015 | list = chainon (list, build_tree_list (sel, keywordexpr)); | |
8016 | sel = c_parser_objc_selector (parser); | |
8017 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8018 | break; | |
8019 | } | |
8020 | return list; | |
8021 | } | |
8022 | ||
8023 | /* Parse an objc-keywordexpr. | |
8024 | ||
8025 | objc-keywordexpr: | |
8026 | nonempty-expr-list | |
8027 | */ | |
8028 | ||
8029 | static tree | |
8030 | c_parser_objc_keywordexpr (c_parser *parser) | |
8031 | { | |
bbbbb16a ILT |
8032 | tree ret; |
8033 | VEC(tree,gc) *expr_list = c_parser_expr_list (parser, true, true, NULL); | |
8034 | if (VEC_length (tree, expr_list) == 1) | |
27bf414c JM |
8035 | { |
8036 | /* Just return the expression, remove a level of | |
8037 | indirection. */ | |
bbbbb16a | 8038 | ret = VEC_index (tree, expr_list, 0); |
27bf414c JM |
8039 | } |
8040 | else | |
8041 | { | |
8042 | /* We have a comma expression, we will collapse later. */ | |
c166b898 | 8043 | ret = build_tree_list_vec (expr_list); |
27bf414c | 8044 | } |
c166b898 | 8045 | release_tree_vector (expr_list); |
bbbbb16a | 8046 | return ret; |
27bf414c JM |
8047 | } |
8048 | ||
c165dca7 IS |
8049 | /* A check, needed in several places, that ObjC interface, implementation or |
8050 | method definitions are not prefixed by incorrect items. */ | |
8051 | static bool | |
8052 | c_parser_objc_diagnose_bad_element_prefix (c_parser *parser, | |
8053 | struct c_declspecs *specs) | |
8054 | { | |
9e5b2115 PB |
8055 | if (!specs->declspecs_seen_p || specs->non_sc_seen_p |
8056 | || specs->typespec_kind != ctsk_none) | |
c165dca7 IS |
8057 | { |
8058 | c_parser_error (parser, | |
8059 | "no type or storage class may be specified here,"); | |
8060 | c_parser_skip_to_end_of_block_or_statement (parser); | |
8061 | return true; | |
8062 | } | |
8063 | return false; | |
8064 | } | |
668ea4b1 | 8065 | |
f614132b | 8066 | /* Parse an Objective-C @property declaration. The syntax is: |
668ea4b1 | 8067 | |
f614132b NP |
8068 | objc-property-declaration: |
8069 | '@property' objc-property-attributes[opt] struct-declaration ; | |
668ea4b1 | 8070 | |
f614132b NP |
8071 | objc-property-attributes: |
8072 | '(' objc-property-attribute-list ')' | |
8073 | ||
8074 | objc-property-attribute-list: | |
8075 | objc-property-attribute | |
8076 | objc-property-attribute-list, objc-property-attribute | |
8077 | ||
8078 | objc-property-attribute | |
8079 | 'getter' = identifier | |
8080 | 'setter' = identifier | |
8081 | 'readonly' | |
8082 | 'readwrite' | |
8083 | 'assign' | |
8084 | 'retain' | |
8085 | 'copy' | |
8086 | 'nonatomic' | |
8087 | ||
8088 | For example: | |
8089 | @property NSString *name; | |
8090 | @property (readonly) id object; | |
8091 | @property (retain, nonatomic, getter=getTheName) id name; | |
8092 | @property int a, b, c; | |
8093 | ||
8094 | PS: This function is identical to cp_parser_objc_at_propery_declaration | |
200290f2 | 8095 | for C++. Keep them in sync. */ |
668ea4b1 | 8096 | static void |
f614132b | 8097 | c_parser_objc_at_property_declaration (c_parser *parser) |
668ea4b1 | 8098 | { |
200290f2 NP |
8099 | /* The following variables hold the attributes of the properties as |
8100 | parsed. They are 'false' or 'NULL_TREE' if the attribute was not | |
8101 | seen. When we see an attribute, we set them to 'true' (if they | |
8102 | are boolean properties) or to the identifier (if they have an | |
8103 | argument, ie, for getter and setter). Note that here we only | |
8104 | parse the list of attributes, check the syntax and accumulate the | |
8105 | attributes that we find. objc_add_property_declaration() will | |
8106 | then process the information. */ | |
8107 | bool property_assign = false; | |
8108 | bool property_copy = false; | |
8109 | tree property_getter_ident = NULL_TREE; | |
8110 | bool property_nonatomic = false; | |
8111 | bool property_readonly = false; | |
8112 | bool property_readwrite = false; | |
8113 | bool property_retain = false; | |
8114 | tree property_setter_ident = NULL_TREE; | |
200290f2 NP |
8115 | |
8116 | /* 'properties' is the list of properties that we read. Usually a | |
8117 | single one, but maybe more (eg, in "@property int a, b, c;" there | |
8118 | are three). */ | |
f614132b NP |
8119 | tree properties; |
8120 | location_t loc; | |
200290f2 | 8121 | |
f614132b NP |
8122 | loc = c_parser_peek_token (parser)->location; |
8123 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)); | |
668ea4b1 | 8124 | |
f614132b | 8125 | c_parser_consume_token (parser); /* Eat '@property'. */ |
668ea4b1 | 8126 | |
f614132b NP |
8127 | /* Parse the optional attribute list... */ |
8128 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
668ea4b1 | 8129 | { |
f614132b NP |
8130 | /* Eat the '(' */ |
8131 | c_parser_consume_token (parser); | |
8132 | ||
8133 | /* Property attribute keywords are valid now. */ | |
8134 | parser->objc_property_attr_context = true; | |
8135 | ||
8136 | while (true) | |
668ea4b1 | 8137 | { |
f614132b NP |
8138 | bool syntax_error = false; |
8139 | c_token *token = c_parser_peek_token (parser); | |
8140 | enum rid keyword; | |
8141 | ||
8142 | if (token->type != CPP_KEYWORD) | |
8143 | { | |
8144 | if (token->type == CPP_CLOSE_PAREN) | |
8145 | c_parser_error (parser, "expected identifier"); | |
8146 | else | |
8147 | { | |
8148 | c_parser_consume_token (parser); | |
8149 | c_parser_error (parser, "unknown property attribute"); | |
8150 | } | |
8151 | break; | |
8152 | } | |
8153 | keyword = token->keyword; | |
200290f2 | 8154 | c_parser_consume_token (parser); |
f614132b NP |
8155 | switch (keyword) |
8156 | { | |
200290f2 | 8157 | case RID_ASSIGN: property_assign = true; break; |
200290f2 NP |
8158 | case RID_COPY: property_copy = true; break; |
8159 | case RID_NONATOMIC: property_nonatomic = true; break; | |
8160 | case RID_READONLY: property_readonly = true; break; | |
8161 | case RID_READWRITE: property_readwrite = true; break; | |
8162 | case RID_RETAIN: property_retain = true; break; | |
8163 | ||
f614132b NP |
8164 | case RID_GETTER: |
8165 | case RID_SETTER: | |
f614132b NP |
8166 | if (c_parser_next_token_is_not (parser, CPP_EQ)) |
8167 | { | |
d853ee42 NP |
8168 | if (keyword == RID_GETTER) |
8169 | c_parser_error (parser, | |
8170 | "missing %<=%> (after %<getter%> attribute)"); | |
8171 | else | |
8172 | c_parser_error (parser, | |
8173 | "missing %<=%> (after %<setter%> attribute)"); | |
f614132b NP |
8174 | syntax_error = true; |
8175 | break; | |
8176 | } | |
8177 | c_parser_consume_token (parser); /* eat the = */ | |
8178 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8179 | { | |
8180 | c_parser_error (parser, "expected identifier"); | |
8181 | syntax_error = true; | |
8182 | break; | |
8183 | } | |
f614132b NP |
8184 | if (keyword == RID_SETTER) |
8185 | { | |
200290f2 NP |
8186 | if (property_setter_ident != NULL_TREE) |
8187 | c_parser_error (parser, "the %<setter%> attribute may only be specified once"); | |
8188 | else | |
8189 | property_setter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 8190 | c_parser_consume_token (parser); |
200290f2 NP |
8191 | if (c_parser_next_token_is_not (parser, CPP_COLON)) |
8192 | c_parser_error (parser, "setter name must terminate with %<:%>"); | |
8193 | else | |
8194 | c_parser_consume_token (parser); | |
f614132b | 8195 | } |
46a88c12 | 8196 | else |
f614132b | 8197 | { |
200290f2 NP |
8198 | if (property_getter_ident != NULL_TREE) |
8199 | c_parser_error (parser, "the %<getter%> attribute may only be specified once"); | |
8200 | else | |
8201 | property_getter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 8202 | c_parser_consume_token (parser); |
f614132b | 8203 | } |
200290f2 NP |
8204 | break; |
8205 | default: | |
8206 | c_parser_error (parser, "unknown property attribute"); | |
f614132b NP |
8207 | syntax_error = true; |
8208 | break; | |
8209 | } | |
8210 | ||
8211 | if (syntax_error) | |
668ea4b1 | 8212 | break; |
f614132b NP |
8213 | |
8214 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
668ea4b1 | 8215 | c_parser_consume_token (parser); |
f614132b | 8216 | else |
668ea4b1 IS |
8217 | break; |
8218 | } | |
f614132b NP |
8219 | parser->objc_property_attr_context = false; |
8220 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8221 | } | |
8222 | /* ... and the property declaration(s). */ | |
8223 | properties = c_parser_struct_declaration (parser); | |
668ea4b1 | 8224 | |
f614132b NP |
8225 | if (properties == error_mark_node) |
8226 | { | |
8227 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8228 | parser->error = false; | |
8229 | return; | |
8230 | } | |
668ea4b1 | 8231 | |
f614132b NP |
8232 | if (properties == NULL_TREE) |
8233 | c_parser_error (parser, "expected identifier"); | |
8234 | else | |
8235 | { | |
8236 | /* Comma-separated properties are chained together in | |
8237 | reverse order; add them one by one. */ | |
8238 | properties = nreverse (properties); | |
8239 | ||
8240 | for (; properties; properties = TREE_CHAIN (properties)) | |
200290f2 NP |
8241 | objc_add_property_declaration (loc, copy_node (properties), |
8242 | property_readonly, property_readwrite, | |
8243 | property_assign, property_retain, | |
8244 | property_copy, property_nonatomic, | |
46a88c12 | 8245 | property_getter_ident, property_setter_ident); |
f614132b | 8246 | } |
668ea4b1 IS |
8247 | |
8248 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
f614132b | 8249 | parser->error = false; |
668ea4b1 IS |
8250 | } |
8251 | ||
da57d1b9 NP |
8252 | /* Parse an Objective-C @synthesize declaration. The syntax is: |
8253 | ||
8254 | objc-synthesize-declaration: | |
8255 | @synthesize objc-synthesize-identifier-list ; | |
8256 | ||
8257 | objc-synthesize-identifier-list: | |
8258 | objc-synthesize-identifier | |
8259 | objc-synthesize-identifier-list, objc-synthesize-identifier | |
8260 | ||
8261 | objc-synthesize-identifier | |
8262 | identifier | |
8263 | identifier = identifier | |
8264 | ||
8265 | For example: | |
8266 | @synthesize MyProperty; | |
8267 | @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty; | |
8268 | ||
8269 | PS: This function is identical to cp_parser_objc_at_synthesize_declaration | |
8270 | for C++. Keep them in sync. | |
8271 | */ | |
8272 | static void | |
8273 | c_parser_objc_at_synthesize_declaration (c_parser *parser) | |
8274 | { | |
8275 | tree list = NULL_TREE; | |
8276 | location_t loc; | |
8277 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE)); | |
8278 | loc = c_parser_peek_token (parser)->location; | |
8279 | ||
8280 | c_parser_consume_token (parser); | |
8281 | while (true) | |
8282 | { | |
8283 | tree property, ivar; | |
8284 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8285 | { | |
8286 | c_parser_error (parser, "expected identifier"); | |
8287 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8288 | /* Once we find the semicolon, we can resume normal parsing. | |
8289 | We have to reset parser->error manually because | |
8290 | c_parser_skip_until_found() won't reset it for us if the | |
8291 | next token is precisely a semicolon. */ | |
8292 | parser->error = false; | |
8293 | return; | |
8294 | } | |
8295 | property = c_parser_peek_token (parser)->value; | |
8296 | c_parser_consume_token (parser); | |
8297 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
8298 | { | |
8299 | c_parser_consume_token (parser); | |
8300 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8301 | { | |
8302 | c_parser_error (parser, "expected identifier"); | |
8303 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8304 | parser->error = false; | |
8305 | return; | |
8306 | } | |
8307 | ivar = c_parser_peek_token (parser)->value; | |
8308 | c_parser_consume_token (parser); | |
8309 | } | |
8310 | else | |
8311 | ivar = NULL_TREE; | |
8312 | list = chainon (list, build_tree_list (ivar, property)); | |
8313 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8314 | c_parser_consume_token (parser); | |
8315 | else | |
8316 | break; | |
8317 | } | |
8318 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8319 | objc_add_synthesize_declaration (loc, list); | |
8320 | } | |
8321 | ||
8322 | /* Parse an Objective-C @dynamic declaration. The syntax is: | |
8323 | ||
8324 | objc-dynamic-declaration: | |
8325 | @dynamic identifier-list ; | |
8326 | ||
8327 | For example: | |
8328 | @dynamic MyProperty; | |
8329 | @dynamic MyProperty, AnotherProperty; | |
8330 | ||
8331 | PS: This function is identical to cp_parser_objc_at_dynamic_declaration | |
8332 | for C++. Keep them in sync. | |
8333 | */ | |
8334 | static void | |
8335 | c_parser_objc_at_dynamic_declaration (c_parser *parser) | |
8336 | { | |
8337 | tree list = NULL_TREE; | |
8338 | location_t loc; | |
8339 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC)); | |
8340 | loc = c_parser_peek_token (parser)->location; | |
8341 | ||
8342 | c_parser_consume_token (parser); | |
8343 | while (true) | |
8344 | { | |
8345 | tree property; | |
8346 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8347 | { | |
8348 | c_parser_error (parser, "expected identifier"); | |
8349 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8350 | parser->error = false; | |
8351 | return; | |
8352 | } | |
8353 | property = c_parser_peek_token (parser)->value; | |
8354 | list = chainon (list, build_tree_list (NULL_TREE, property)); | |
8355 | c_parser_consume_token (parser); | |
8356 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8357 | c_parser_consume_token (parser); | |
8358 | else | |
8359 | break; | |
8360 | } | |
8361 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8362 | objc_add_dynamic_declaration (loc, list); | |
8363 | } | |
8364 | ||
27bf414c | 8365 | \f |
953ff289 DN |
8366 | /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore |
8367 | should be considered, statements. ALLOW_STMT is true if we're within | |
8368 | the context of a function and such pragmas are to be allowed. Returns | |
8369 | true if we actually parsed such a pragma. */ | |
27bf414c | 8370 | |
bc4071dd | 8371 | static bool |
953ff289 | 8372 | c_parser_pragma (c_parser *parser, enum pragma_context context) |
bc4071dd RH |
8373 | { |
8374 | unsigned int id; | |
8375 | ||
8376 | id = c_parser_peek_token (parser)->pragma_kind; | |
8377 | gcc_assert (id != PRAGMA_NONE); | |
8378 | ||
8379 | switch (id) | |
8380 | { | |
953ff289 DN |
8381 | case PRAGMA_OMP_BARRIER: |
8382 | if (context != pragma_compound) | |
8383 | { | |
8384 | if (context == pragma_stmt) | |
8385 | c_parser_error (parser, "%<#pragma omp barrier%> may only be " | |
8386 | "used in compound statements"); | |
8387 | goto bad_stmt; | |
8388 | } | |
8389 | c_parser_omp_barrier (parser); | |
8390 | return false; | |
8391 | ||
8392 | case PRAGMA_OMP_FLUSH: | |
8393 | if (context != pragma_compound) | |
8394 | { | |
8395 | if (context == pragma_stmt) | |
8396 | c_parser_error (parser, "%<#pragma omp flush%> may only be " | |
8397 | "used in compound statements"); | |
8398 | goto bad_stmt; | |
8399 | } | |
8400 | c_parser_omp_flush (parser); | |
8401 | return false; | |
8402 | ||
a68ab351 JJ |
8403 | case PRAGMA_OMP_TASKWAIT: |
8404 | if (context != pragma_compound) | |
8405 | { | |
8406 | if (context == pragma_stmt) | |
8407 | c_parser_error (parser, "%<#pragma omp taskwait%> may only be " | |
8408 | "used in compound statements"); | |
8409 | goto bad_stmt; | |
8410 | } | |
8411 | c_parser_omp_taskwait (parser); | |
8412 | return false; | |
8413 | ||
20906c66 JJ |
8414 | case PRAGMA_OMP_TASKYIELD: |
8415 | if (context != pragma_compound) | |
8416 | { | |
8417 | if (context == pragma_stmt) | |
8418 | c_parser_error (parser, "%<#pragma omp taskyield%> may only be " | |
8419 | "used in compound statements"); | |
8420 | goto bad_stmt; | |
8421 | } | |
8422 | c_parser_omp_taskyield (parser); | |
8423 | return false; | |
8424 | ||
953ff289 DN |
8425 | case PRAGMA_OMP_THREADPRIVATE: |
8426 | c_parser_omp_threadprivate (parser); | |
8427 | return false; | |
8428 | ||
8429 | case PRAGMA_OMP_SECTION: | |
3ba09659 AH |
8430 | error_at (c_parser_peek_token (parser)->location, |
8431 | "%<#pragma omp section%> may only be used in " | |
8432 | "%<#pragma omp sections%> construct"); | |
953ff289 DN |
8433 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); |
8434 | return false; | |
8435 | ||
bc4071dd RH |
8436 | case PRAGMA_GCC_PCH_PREPROCESS: |
8437 | c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first"); | |
8438 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
8439 | return false; | |
8440 | ||
8441 | default: | |
953ff289 DN |
8442 | if (id < PRAGMA_FIRST_EXTERNAL) |
8443 | { | |
8444 | if (context == pragma_external) | |
8445 | { | |
8446 | bad_stmt: | |
8447 | c_parser_error (parser, "expected declaration specifiers"); | |
8448 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
8449 | return false; | |
8450 | } | |
8451 | c_parser_omp_construct (parser); | |
8452 | return true; | |
8453 | } | |
bc4071dd RH |
8454 | break; |
8455 | } | |
8456 | ||
8457 | c_parser_consume_pragma (parser); | |
8458 | c_invoke_pragma_handler (id); | |
27bf414c | 8459 | |
b8698a0f | 8460 | /* Skip to EOL, but suppress any error message. Those will have been |
bc4071dd RH |
8461 | generated by the handler routine through calling error, as opposed |
8462 | to calling c_parser_error. */ | |
8463 | parser->error = true; | |
8464 | c_parser_skip_to_pragma_eol (parser); | |
8465 | ||
8466 | return false; | |
8467 | } | |
8468 | ||
8469 | /* The interface the pragma parsers have to the lexer. */ | |
8470 | ||
8471 | enum cpp_ttype | |
8472 | pragma_lex (tree *value) | |
8473 | { | |
8474 | c_token *tok = c_parser_peek_token (the_parser); | |
8475 | enum cpp_ttype ret = tok->type; | |
8476 | ||
8477 | *value = tok->value; | |
8478 | if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF) | |
8479 | ret = CPP_EOF; | |
8480 | else | |
8481 | { | |
8482 | if (ret == CPP_KEYWORD) | |
8483 | ret = CPP_NAME; | |
8484 | c_parser_consume_token (the_parser); | |
8485 | } | |
8486 | ||
8487 | return ret; | |
8488 | } | |
8489 | ||
8490 | static void | |
8491 | c_parser_pragma_pch_preprocess (c_parser *parser) | |
8492 | { | |
8493 | tree name = NULL; | |
8494 | ||
8495 | c_parser_consume_pragma (parser); | |
8496 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
8497 | { | |
8498 | name = c_parser_peek_token (parser)->value; | |
8499 | c_parser_consume_token (parser); | |
8500 | } | |
8501 | else | |
8502 | c_parser_error (parser, "expected string literal"); | |
8503 | c_parser_skip_to_pragma_eol (parser); | |
8504 | ||
8505 | if (name) | |
8506 | c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name)); | |
8507 | } | |
953ff289 DN |
8508 | \f |
8509 | /* OpenMP 2.5 parsing routines. */ | |
8510 | ||
8511 | /* Returns name of the next clause. | |
8512 | If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and | |
8513 | the token is not consumed. Otherwise appropriate pragma_omp_clause is | |
8514 | returned and the token is consumed. */ | |
8515 | ||
8516 | static pragma_omp_clause | |
8517 | c_parser_omp_clause_name (c_parser *parser) | |
8518 | { | |
8519 | pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE; | |
8520 | ||
8521 | if (c_parser_next_token_is_keyword (parser, RID_IF)) | |
8522 | result = PRAGMA_OMP_CLAUSE_IF; | |
8523 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
8524 | result = PRAGMA_OMP_CLAUSE_DEFAULT; | |
8525 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
8526 | { | |
8527 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
8528 | ||
8529 | switch (p[0]) | |
8530 | { | |
8531 | case 'c': | |
a68ab351 JJ |
8532 | if (!strcmp ("collapse", p)) |
8533 | result = PRAGMA_OMP_CLAUSE_COLLAPSE; | |
8534 | else if (!strcmp ("copyin", p)) | |
953ff289 DN |
8535 | result = PRAGMA_OMP_CLAUSE_COPYIN; |
8536 | else if (!strcmp ("copyprivate", p)) | |
8537 | result = PRAGMA_OMP_CLAUSE_COPYPRIVATE; | |
8538 | break; | |
8539 | case 'f': | |
20906c66 JJ |
8540 | if (!strcmp ("final", p)) |
8541 | result = PRAGMA_OMP_CLAUSE_FINAL; | |
8542 | else if (!strcmp ("firstprivate", p)) | |
953ff289 DN |
8543 | result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE; |
8544 | break; | |
8545 | case 'l': | |
8546 | if (!strcmp ("lastprivate", p)) | |
8547 | result = PRAGMA_OMP_CLAUSE_LASTPRIVATE; | |
8548 | break; | |
20906c66 JJ |
8549 | case 'm': |
8550 | if (!strcmp ("mergeable", p)) | |
8551 | result = PRAGMA_OMP_CLAUSE_MERGEABLE; | |
8552 | break; | |
953ff289 DN |
8553 | case 'n': |
8554 | if (!strcmp ("nowait", p)) | |
8555 | result = PRAGMA_OMP_CLAUSE_NOWAIT; | |
8556 | else if (!strcmp ("num_threads", p)) | |
8557 | result = PRAGMA_OMP_CLAUSE_NUM_THREADS; | |
8558 | break; | |
8559 | case 'o': | |
8560 | if (!strcmp ("ordered", p)) | |
8561 | result = PRAGMA_OMP_CLAUSE_ORDERED; | |
8562 | break; | |
8563 | case 'p': | |
8564 | if (!strcmp ("private", p)) | |
8565 | result = PRAGMA_OMP_CLAUSE_PRIVATE; | |
8566 | break; | |
8567 | case 'r': | |
8568 | if (!strcmp ("reduction", p)) | |
8569 | result = PRAGMA_OMP_CLAUSE_REDUCTION; | |
8570 | break; | |
8571 | case 's': | |
8572 | if (!strcmp ("schedule", p)) | |
8573 | result = PRAGMA_OMP_CLAUSE_SCHEDULE; | |
8574 | else if (!strcmp ("shared", p)) | |
8575 | result = PRAGMA_OMP_CLAUSE_SHARED; | |
8576 | break; | |
a68ab351 JJ |
8577 | case 'u': |
8578 | if (!strcmp ("untied", p)) | |
8579 | result = PRAGMA_OMP_CLAUSE_UNTIED; | |
8580 | break; | |
953ff289 DN |
8581 | } |
8582 | } | |
8583 | ||
8584 | if (result != PRAGMA_OMP_CLAUSE_NONE) | |
8585 | c_parser_consume_token (parser); | |
8586 | ||
8587 | return result; | |
8588 | } | |
8589 | ||
8590 | /* Validate that a clause of the given type does not already exist. */ | |
8591 | ||
8592 | static void | |
d75d71e0 ILT |
8593 | check_no_duplicate_clause (tree clauses, enum omp_clause_code code, |
8594 | const char *name) | |
953ff289 DN |
8595 | { |
8596 | tree c; | |
8597 | ||
8598 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
aaf46ef9 | 8599 | if (OMP_CLAUSE_CODE (c) == code) |
953ff289 | 8600 | { |
c2255bc4 AH |
8601 | location_t loc = OMP_CLAUSE_LOCATION (c); |
8602 | error_at (loc, "too many %qs clauses", name); | |
953ff289 DN |
8603 | break; |
8604 | } | |
8605 | } | |
8606 | ||
8607 | /* OpenMP 2.5: | |
8608 | variable-list: | |
8609 | identifier | |
8610 | variable-list , identifier | |
8611 | ||
c2255bc4 AH |
8612 | If KIND is nonzero, create the appropriate node and install the |
8613 | decl in OMP_CLAUSE_DECL and add the node to the head of the list. | |
8614 | If KIND is nonzero, CLAUSE_LOC is the location of the clause. | |
953ff289 DN |
8615 | |
8616 | If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE; | |
8617 | return the list created. */ | |
8618 | ||
8619 | static tree | |
c2255bc4 AH |
8620 | c_parser_omp_variable_list (c_parser *parser, |
8621 | location_t clause_loc, | |
8622 | enum omp_clause_code kind, | |
aaf46ef9 | 8623 | tree list) |
953ff289 DN |
8624 | { |
8625 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
8626 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
8627 | c_parser_error (parser, "expected identifier"); | |
8628 | ||
8629 | while (c_parser_next_token_is (parser, CPP_NAME) | |
8630 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
8631 | { | |
8632 | tree t = lookup_name (c_parser_peek_token (parser)->value); | |
8633 | ||
8634 | if (t == NULL_TREE) | |
c2255bc4 AH |
8635 | undeclared_variable (c_parser_peek_token (parser)->location, |
8636 | c_parser_peek_token (parser)->value); | |
953ff289 DN |
8637 | else if (t == error_mark_node) |
8638 | ; | |
8639 | else if (kind != 0) | |
8640 | { | |
c2255bc4 | 8641 | tree u = build_omp_clause (clause_loc, kind); |
953ff289 DN |
8642 | OMP_CLAUSE_DECL (u) = t; |
8643 | OMP_CLAUSE_CHAIN (u) = list; | |
8644 | list = u; | |
8645 | } | |
8646 | else | |
8647 | list = tree_cons (t, NULL_TREE, list); | |
8648 | ||
8649 | c_parser_consume_token (parser); | |
8650 | ||
8651 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
8652 | break; | |
8653 | ||
8654 | c_parser_consume_token (parser); | |
8655 | } | |
8656 | ||
8657 | return list; | |
8658 | } | |
8659 | ||
8660 | /* Similarly, but expect leading and trailing parenthesis. This is a very | |
8661 | common case for omp clauses. */ | |
8662 | ||
8663 | static tree | |
d75d71e0 ILT |
8664 | c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind, |
8665 | tree list) | |
953ff289 | 8666 | { |
c2255bc4 AH |
8667 | /* The clauses location. */ |
8668 | location_t loc = c_parser_peek_token (parser)->location; | |
8669 | ||
953ff289 DN |
8670 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8671 | { | |
c2255bc4 | 8672 | list = c_parser_omp_variable_list (parser, loc, kind, list); |
953ff289 DN |
8673 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8674 | } | |
8675 | return list; | |
8676 | } | |
8677 | ||
a68ab351 JJ |
8678 | /* OpenMP 3.0: |
8679 | collapse ( constant-expression ) */ | |
8680 | ||
8681 | static tree | |
8682 | c_parser_omp_clause_collapse (c_parser *parser, tree list) | |
8683 | { | |
8684 | tree c, num = error_mark_node; | |
8685 | HOST_WIDE_INT n; | |
8686 | location_t loc; | |
8687 | ||
8688 | check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse"); | |
8689 | ||
8690 | loc = c_parser_peek_token (parser)->location; | |
8691 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8692 | { | |
8693 | num = c_parser_expr_no_commas (parser, NULL).value; | |
8694 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8695 | } | |
8696 | if (num == error_mark_node) | |
8697 | return list; | |
8698 | if (!INTEGRAL_TYPE_P (TREE_TYPE (num)) | |
8699 | || !host_integerp (num, 0) | |
8700 | || (n = tree_low_cst (num, 0)) <= 0 | |
8701 | || (int) n != n) | |
8702 | { | |
3ba09659 AH |
8703 | error_at (loc, |
8704 | "collapse argument needs positive constant integer expression"); | |
a68ab351 JJ |
8705 | return list; |
8706 | } | |
c2255bc4 | 8707 | c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE); |
a68ab351 JJ |
8708 | OMP_CLAUSE_COLLAPSE_EXPR (c) = num; |
8709 | OMP_CLAUSE_CHAIN (c) = list; | |
8710 | return c; | |
8711 | } | |
8712 | ||
953ff289 DN |
8713 | /* OpenMP 2.5: |
8714 | copyin ( variable-list ) */ | |
8715 | ||
8716 | static tree | |
8717 | c_parser_omp_clause_copyin (c_parser *parser, tree list) | |
8718 | { | |
8719 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list); | |
8720 | } | |
8721 | ||
8722 | /* OpenMP 2.5: | |
8723 | copyprivate ( variable-list ) */ | |
8724 | ||
8725 | static tree | |
8726 | c_parser_omp_clause_copyprivate (c_parser *parser, tree list) | |
8727 | { | |
8728 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list); | |
8729 | } | |
8730 | ||
8731 | /* OpenMP 2.5: | |
8732 | default ( shared | none ) */ | |
8733 | ||
8734 | static tree | |
8735 | c_parser_omp_clause_default (c_parser *parser, tree list) | |
8736 | { | |
8737 | enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
c2255bc4 | 8738 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8739 | tree c; |
8740 | ||
8741 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
8742 | return list; | |
8743 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
8744 | { | |
8745 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
8746 | ||
8747 | switch (p[0]) | |
8748 | { | |
8749 | case 'n': | |
8750 | if (strcmp ("none", p) != 0) | |
8751 | goto invalid_kind; | |
8752 | kind = OMP_CLAUSE_DEFAULT_NONE; | |
8753 | break; | |
8754 | ||
8755 | case 's': | |
8756 | if (strcmp ("shared", p) != 0) | |
8757 | goto invalid_kind; | |
8758 | kind = OMP_CLAUSE_DEFAULT_SHARED; | |
8759 | break; | |
8760 | ||
8761 | default: | |
8762 | goto invalid_kind; | |
8763 | } | |
8764 | ||
8765 | c_parser_consume_token (parser); | |
8766 | } | |
8767 | else | |
8768 | { | |
8769 | invalid_kind: | |
8770 | c_parser_error (parser, "expected %<none%> or %<shared%>"); | |
8771 | } | |
8772 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8773 | ||
8774 | if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
8775 | return list; | |
8776 | ||
8777 | check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default"); | |
c2255bc4 | 8778 | c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT); |
953ff289 DN |
8779 | OMP_CLAUSE_CHAIN (c) = list; |
8780 | OMP_CLAUSE_DEFAULT_KIND (c) = kind; | |
8781 | ||
8782 | return c; | |
8783 | } | |
8784 | ||
8785 | /* OpenMP 2.5: | |
8786 | firstprivate ( variable-list ) */ | |
8787 | ||
8788 | static tree | |
8789 | c_parser_omp_clause_firstprivate (c_parser *parser, tree list) | |
8790 | { | |
8791 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list); | |
8792 | } | |
8793 | ||
20906c66 JJ |
8794 | /* OpenMP 3.1: |
8795 | final ( expression ) */ | |
8796 | ||
8797 | static tree | |
8798 | c_parser_omp_clause_final (c_parser *parser, tree list) | |
8799 | { | |
8800 | location_t loc = c_parser_peek_token (parser)->location; | |
8801 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8802 | { | |
8803 | tree t = c_parser_paren_condition (parser); | |
8804 | tree c; | |
8805 | ||
8806 | check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final"); | |
8807 | ||
8808 | c = build_omp_clause (loc, OMP_CLAUSE_FINAL); | |
8809 | OMP_CLAUSE_FINAL_EXPR (c) = t; | |
8810 | OMP_CLAUSE_CHAIN (c) = list; | |
8811 | list = c; | |
8812 | } | |
8813 | else | |
8814 | c_parser_error (parser, "expected %<(%>"); | |
8815 | ||
8816 | return list; | |
8817 | } | |
8818 | ||
953ff289 DN |
8819 | /* OpenMP 2.5: |
8820 | if ( expression ) */ | |
8821 | ||
8822 | static tree | |
8823 | c_parser_omp_clause_if (c_parser *parser, tree list) | |
8824 | { | |
c2255bc4 | 8825 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8826 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
8827 | { | |
8828 | tree t = c_parser_paren_condition (parser); | |
8829 | tree c; | |
8830 | ||
8831 | check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if"); | |
8832 | ||
c2255bc4 | 8833 | c = build_omp_clause (loc, OMP_CLAUSE_IF); |
953ff289 DN |
8834 | OMP_CLAUSE_IF_EXPR (c) = t; |
8835 | OMP_CLAUSE_CHAIN (c) = list; | |
8836 | list = c; | |
8837 | } | |
8838 | else | |
8839 | c_parser_error (parser, "expected %<(%>"); | |
8840 | ||
8841 | return list; | |
8842 | } | |
8843 | ||
8844 | /* OpenMP 2.5: | |
8845 | lastprivate ( variable-list ) */ | |
8846 | ||
8847 | static tree | |
8848 | c_parser_omp_clause_lastprivate (c_parser *parser, tree list) | |
8849 | { | |
8850 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list); | |
8851 | } | |
8852 | ||
20906c66 JJ |
8853 | /* OpenMP 3.1: |
8854 | mergeable */ | |
8855 | ||
8856 | static tree | |
8857 | c_parser_omp_clause_mergeable (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
8858 | { | |
8859 | tree c; | |
8860 | ||
8861 | /* FIXME: Should we allow duplicates? */ | |
8862 | check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable"); | |
8863 | ||
8864 | c = build_omp_clause (c_parser_peek_token (parser)->location, | |
8865 | OMP_CLAUSE_MERGEABLE); | |
8866 | OMP_CLAUSE_CHAIN (c) = list; | |
8867 | ||
8868 | return c; | |
8869 | } | |
8870 | ||
953ff289 DN |
8871 | /* OpenMP 2.5: |
8872 | nowait */ | |
8873 | ||
8874 | static tree | |
8875 | c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
8876 | { | |
8877 | tree c; | |
c2255bc4 | 8878 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8879 | |
8880 | check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait"); | |
8881 | ||
c2255bc4 | 8882 | c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT); |
953ff289 DN |
8883 | OMP_CLAUSE_CHAIN (c) = list; |
8884 | return c; | |
8885 | } | |
8886 | ||
8887 | /* OpenMP 2.5: | |
8888 | num_threads ( expression ) */ | |
8889 | ||
8890 | static tree | |
8891 | c_parser_omp_clause_num_threads (c_parser *parser, tree list) | |
8892 | { | |
c2255bc4 | 8893 | location_t num_threads_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8894 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8895 | { | |
c7412148 | 8896 | location_t expr_loc = c_parser_peek_token (parser)->location; |
953ff289 | 8897 | tree c, t = c_parser_expression (parser).value; |
928c19bb | 8898 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
8899 | |
8900 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8901 | ||
8902 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
8903 | { | |
8904 | c_parser_error (parser, "expected integer expression"); | |
8905 | return list; | |
8906 | } | |
8907 | ||
8908 | /* Attempt to statically determine when the number isn't positive. */ | |
db3927fb | 8909 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, |
953ff289 | 8910 | build_int_cst (TREE_TYPE (t), 0)); |
c2255bc4 AH |
8911 | if (CAN_HAVE_LOCATION_P (c)) |
8912 | SET_EXPR_LOCATION (c, expr_loc); | |
953ff289 DN |
8913 | if (c == boolean_true_node) |
8914 | { | |
3ba09659 AH |
8915 | warning_at (expr_loc, 0, |
8916 | "%<num_threads%> value must be positive"); | |
953ff289 DN |
8917 | t = integer_one_node; |
8918 | } | |
8919 | ||
8920 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads"); | |
8921 | ||
c2255bc4 | 8922 | c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS); |
953ff289 DN |
8923 | OMP_CLAUSE_NUM_THREADS_EXPR (c) = t; |
8924 | OMP_CLAUSE_CHAIN (c) = list; | |
8925 | list = c; | |
8926 | } | |
8927 | ||
8928 | return list; | |
8929 | } | |
8930 | ||
8931 | /* OpenMP 2.5: | |
8932 | ordered */ | |
8933 | ||
8934 | static tree | |
c2255bc4 | 8935 | c_parser_omp_clause_ordered (c_parser *parser, tree list) |
953ff289 DN |
8936 | { |
8937 | tree c; | |
8938 | ||
8939 | check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered"); | |
8940 | ||
c2255bc4 AH |
8941 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
8942 | OMP_CLAUSE_ORDERED); | |
953ff289 | 8943 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 8944 | |
953ff289 DN |
8945 | return c; |
8946 | } | |
8947 | ||
8948 | /* OpenMP 2.5: | |
8949 | private ( variable-list ) */ | |
8950 | ||
8951 | static tree | |
8952 | c_parser_omp_clause_private (c_parser *parser, tree list) | |
8953 | { | |
8954 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list); | |
8955 | } | |
8956 | ||
8957 | /* OpenMP 2.5: | |
8958 | reduction ( reduction-operator : variable-list ) | |
8959 | ||
8960 | reduction-operator: | |
20906c66 JJ |
8961 | One of: + * - & ^ | && || |
8962 | ||
8963 | OpenMP 3.1: | |
8964 | ||
8965 | reduction-operator: | |
8966 | One of: + * - & ^ | && || max min */ | |
953ff289 DN |
8967 | |
8968 | static tree | |
8969 | c_parser_omp_clause_reduction (c_parser *parser, tree list) | |
8970 | { | |
c2255bc4 | 8971 | location_t clause_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
8972 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8973 | { | |
8974 | enum tree_code code; | |
8975 | ||
8976 | switch (c_parser_peek_token (parser)->type) | |
8977 | { | |
8978 | case CPP_PLUS: | |
8979 | code = PLUS_EXPR; | |
8980 | break; | |
8981 | case CPP_MULT: | |
8982 | code = MULT_EXPR; | |
8983 | break; | |
8984 | case CPP_MINUS: | |
8985 | code = MINUS_EXPR; | |
8986 | break; | |
8987 | case CPP_AND: | |
8988 | code = BIT_AND_EXPR; | |
8989 | break; | |
8990 | case CPP_XOR: | |
8991 | code = BIT_XOR_EXPR; | |
8992 | break; | |
8993 | case CPP_OR: | |
8994 | code = BIT_IOR_EXPR; | |
8995 | break; | |
8996 | case CPP_AND_AND: | |
8997 | code = TRUTH_ANDIF_EXPR; | |
8998 | break; | |
8999 | case CPP_OR_OR: | |
9000 | code = TRUTH_ORIF_EXPR; | |
9001 | break; | |
20906c66 JJ |
9002 | case CPP_NAME: |
9003 | { | |
9004 | const char *p | |
9005 | = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9006 | if (strcmp (p, "min") == 0) | |
9007 | { | |
9008 | code = MIN_EXPR; | |
9009 | break; | |
9010 | } | |
9011 | if (strcmp (p, "max") == 0) | |
9012 | { | |
9013 | code = MAX_EXPR; | |
9014 | break; | |
9015 | } | |
9016 | } | |
9017 | /* FALLTHRU */ | |
953ff289 DN |
9018 | default: |
9019 | c_parser_error (parser, | |
9020 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
20906c66 | 9021 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>"); |
953ff289 DN |
9022 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); |
9023 | return list; | |
9024 | } | |
9025 | c_parser_consume_token (parser); | |
9026 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
9027 | { | |
9028 | tree nl, c; | |
9029 | ||
c2255bc4 AH |
9030 | nl = c_parser_omp_variable_list (parser, clause_loc, |
9031 | OMP_CLAUSE_REDUCTION, list); | |
953ff289 DN |
9032 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
9033 | OMP_CLAUSE_REDUCTION_CODE (c) = code; | |
9034 | ||
9035 | list = nl; | |
9036 | } | |
9037 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9038 | } | |
9039 | return list; | |
9040 | } | |
9041 | ||
9042 | /* OpenMP 2.5: | |
9043 | schedule ( schedule-kind ) | |
9044 | schedule ( schedule-kind , expression ) | |
9045 | ||
9046 | schedule-kind: | |
a68ab351 | 9047 | static | dynamic | guided | runtime | auto |
953ff289 DN |
9048 | */ |
9049 | ||
9050 | static tree | |
9051 | c_parser_omp_clause_schedule (c_parser *parser, tree list) | |
9052 | { | |
9053 | tree c, t; | |
c2255bc4 | 9054 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9055 | |
9056 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
9057 | return list; | |
9058 | ||
c2255bc4 | 9059 | c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE); |
953ff289 DN |
9060 | |
9061 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9062 | { | |
9063 | tree kind = c_parser_peek_token (parser)->value; | |
9064 | const char *p = IDENTIFIER_POINTER (kind); | |
9065 | ||
9066 | switch (p[0]) | |
9067 | { | |
9068 | case 'd': | |
9069 | if (strcmp ("dynamic", p) != 0) | |
9070 | goto invalid_kind; | |
9071 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC; | |
9072 | break; | |
9073 | ||
9074 | case 'g': | |
9075 | if (strcmp ("guided", p) != 0) | |
9076 | goto invalid_kind; | |
9077 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED; | |
9078 | break; | |
9079 | ||
9080 | case 'r': | |
9081 | if (strcmp ("runtime", p) != 0) | |
9082 | goto invalid_kind; | |
9083 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME; | |
9084 | break; | |
9085 | ||
9086 | default: | |
9087 | goto invalid_kind; | |
9088 | } | |
9089 | } | |
9090 | else if (c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
9091 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC; | |
a68ab351 JJ |
9092 | else if (c_parser_next_token_is_keyword (parser, RID_AUTO)) |
9093 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO; | |
953ff289 DN |
9094 | else |
9095 | goto invalid_kind; | |
9096 | ||
9097 | c_parser_consume_token (parser); | |
9098 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9099 | { | |
c7412148 | 9100 | location_t here; |
953ff289 DN |
9101 | c_parser_consume_token (parser); |
9102 | ||
c7412148 | 9103 | here = c_parser_peek_token (parser)->location; |
953ff289 | 9104 | t = c_parser_expr_no_commas (parser, NULL).value; |
928c19bb | 9105 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
9106 | |
9107 | if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
3ba09659 AH |
9108 | error_at (here, "schedule %<runtime%> does not take " |
9109 | "a %<chunk_size%> parameter"); | |
a68ab351 | 9110 | else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO) |
3ba09659 AH |
9111 | error_at (here, |
9112 | "schedule %<auto%> does not take " | |
9113 | "a %<chunk_size%> parameter"); | |
953ff289 DN |
9114 | else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE) |
9115 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
9116 | else | |
9117 | c_parser_error (parser, "expected integer expression"); | |
9118 | ||
9119 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9120 | } | |
9121 | else | |
9122 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
9123 | "expected %<,%> or %<)%>"); | |
9124 | ||
9125 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
9126 | OMP_CLAUSE_CHAIN (c) = list; | |
9127 | return c; | |
9128 | ||
9129 | invalid_kind: | |
9130 | c_parser_error (parser, "invalid schedule kind"); | |
9131 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
9132 | return list; | |
9133 | } | |
9134 | ||
9135 | /* OpenMP 2.5: | |
9136 | shared ( variable-list ) */ | |
9137 | ||
9138 | static tree | |
9139 | c_parser_omp_clause_shared (c_parser *parser, tree list) | |
9140 | { | |
9141 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list); | |
9142 | } | |
9143 | ||
a68ab351 JJ |
9144 | /* OpenMP 3.0: |
9145 | untied */ | |
9146 | ||
9147 | static tree | |
9148 | c_parser_omp_clause_untied (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_UNTIED, "untied"); | |
9154 | ||
c2255bc4 AH |
9155 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
9156 | OMP_CLAUSE_UNTIED); | |
a68ab351 | 9157 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 9158 | |
a68ab351 JJ |
9159 | return c; |
9160 | } | |
9161 | ||
953ff289 DN |
9162 | /* Parse all OpenMP clauses. The set clauses allowed by the directive |
9163 | is a bitmask in MASK. Return the list of clauses found; the result | |
9164 | of clause default goes in *pdefault. */ | |
9165 | ||
9166 | static tree | |
9167 | c_parser_omp_all_clauses (c_parser *parser, unsigned int mask, | |
9168 | const char *where) | |
9169 | { | |
9170 | tree clauses = NULL; | |
8085ca15 | 9171 | bool first = true; |
953ff289 DN |
9172 | |
9173 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
9174 | { | |
8085ca15 JJ |
9175 | location_t here; |
9176 | pragma_omp_clause c_kind; | |
953ff289 DN |
9177 | const char *c_name; |
9178 | tree prev = clauses; | |
9179 | ||
8085ca15 JJ |
9180 | if (!first && c_parser_next_token_is (parser, CPP_COMMA)) |
9181 | c_parser_consume_token (parser); | |
9182 | ||
9183 | first = false; | |
9184 | here = c_parser_peek_token (parser)->location; | |
9185 | c_kind = c_parser_omp_clause_name (parser); | |
9186 | ||
953ff289 DN |
9187 | switch (c_kind) |
9188 | { | |
a68ab351 JJ |
9189 | case PRAGMA_OMP_CLAUSE_COLLAPSE: |
9190 | clauses = c_parser_omp_clause_collapse (parser, clauses); | |
9191 | c_name = "collapse"; | |
9192 | break; | |
953ff289 DN |
9193 | case PRAGMA_OMP_CLAUSE_COPYIN: |
9194 | clauses = c_parser_omp_clause_copyin (parser, clauses); | |
9195 | c_name = "copyin"; | |
9196 | break; | |
9197 | case PRAGMA_OMP_CLAUSE_COPYPRIVATE: | |
9198 | clauses = c_parser_omp_clause_copyprivate (parser, clauses); | |
9199 | c_name = "copyprivate"; | |
9200 | break; | |
9201 | case PRAGMA_OMP_CLAUSE_DEFAULT: | |
9202 | clauses = c_parser_omp_clause_default (parser, clauses); | |
9203 | c_name = "default"; | |
9204 | break; | |
9205 | case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE: | |
9206 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
9207 | c_name = "firstprivate"; | |
9208 | break; | |
20906c66 JJ |
9209 | case PRAGMA_OMP_CLAUSE_FINAL: |
9210 | clauses = c_parser_omp_clause_final (parser, clauses); | |
9211 | c_name = "final"; | |
9212 | break; | |
953ff289 DN |
9213 | case PRAGMA_OMP_CLAUSE_IF: |
9214 | clauses = c_parser_omp_clause_if (parser, clauses); | |
9215 | c_name = "if"; | |
9216 | break; | |
9217 | case PRAGMA_OMP_CLAUSE_LASTPRIVATE: | |
9218 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
9219 | c_name = "lastprivate"; | |
9220 | break; | |
20906c66 JJ |
9221 | case PRAGMA_OMP_CLAUSE_MERGEABLE: |
9222 | clauses = c_parser_omp_clause_mergeable (parser, clauses); | |
9223 | c_name = "mergeable"; | |
9224 | break; | |
953ff289 DN |
9225 | case PRAGMA_OMP_CLAUSE_NOWAIT: |
9226 | clauses = c_parser_omp_clause_nowait (parser, clauses); | |
9227 | c_name = "nowait"; | |
9228 | break; | |
9229 | case PRAGMA_OMP_CLAUSE_NUM_THREADS: | |
9230 | clauses = c_parser_omp_clause_num_threads (parser, clauses); | |
9231 | c_name = "num_threads"; | |
9232 | break; | |
9233 | case PRAGMA_OMP_CLAUSE_ORDERED: | |
9234 | clauses = c_parser_omp_clause_ordered (parser, clauses); | |
9235 | c_name = "ordered"; | |
9236 | break; | |
9237 | case PRAGMA_OMP_CLAUSE_PRIVATE: | |
9238 | clauses = c_parser_omp_clause_private (parser, clauses); | |
9239 | c_name = "private"; | |
9240 | break; | |
9241 | case PRAGMA_OMP_CLAUSE_REDUCTION: | |
9242 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
9243 | c_name = "reduction"; | |
9244 | break; | |
9245 | case PRAGMA_OMP_CLAUSE_SCHEDULE: | |
9246 | clauses = c_parser_omp_clause_schedule (parser, clauses); | |
9247 | c_name = "schedule"; | |
9248 | break; | |
9249 | case PRAGMA_OMP_CLAUSE_SHARED: | |
9250 | clauses = c_parser_omp_clause_shared (parser, clauses); | |
9251 | c_name = "shared"; | |
9252 | break; | |
a68ab351 JJ |
9253 | case PRAGMA_OMP_CLAUSE_UNTIED: |
9254 | clauses = c_parser_omp_clause_untied (parser, clauses); | |
9255 | c_name = "untied"; | |
9256 | break; | |
953ff289 DN |
9257 | default: |
9258 | c_parser_error (parser, "expected %<#pragma omp%> clause"); | |
9259 | goto saw_error; | |
9260 | } | |
9261 | ||
9262 | if (((mask >> c_kind) & 1) == 0 && !parser->error) | |
9263 | { | |
9264 | /* Remove the invalid clause(s) from the list to avoid | |
9265 | confusing the rest of the compiler. */ | |
9266 | clauses = prev; | |
3ba09659 | 9267 | error_at (here, "%qs is not valid for %qs", c_name, where); |
953ff289 DN |
9268 | } |
9269 | } | |
9270 | ||
9271 | saw_error: | |
9272 | c_parser_skip_to_pragma_eol (parser); | |
9273 | ||
9274 | return c_finish_omp_clauses (clauses); | |
9275 | } | |
9276 | ||
9277 | /* OpenMP 2.5: | |
9278 | structured-block: | |
9279 | statement | |
9280 | ||
9281 | In practice, we're also interested in adding the statement to an | |
9282 | outer node. So it is convenient if we work around the fact that | |
9283 | c_parser_statement calls add_stmt. */ | |
9284 | ||
9285 | static tree | |
9286 | c_parser_omp_structured_block (c_parser *parser) | |
9287 | { | |
9288 | tree stmt = push_stmt_list (); | |
9289 | c_parser_statement (parser); | |
9290 | return pop_stmt_list (stmt); | |
9291 | } | |
9292 | ||
9293 | /* OpenMP 2.5: | |
9294 | # pragma omp atomic new-line | |
9295 | expression-stmt | |
9296 | ||
9297 | expression-stmt: | |
9298 | x binop= expr | x++ | ++x | x-- | --x | |
9299 | binop: | |
9300 | +, *, -, /, &, ^, |, <<, >> | |
9301 | ||
b8698a0f | 9302 | where x is an lvalue expression with scalar type. |
c2255bc4 | 9303 | |
20906c66 JJ |
9304 | OpenMP 3.1: |
9305 | # pragma omp atomic new-line | |
9306 | update-stmt | |
9307 | ||
9308 | # pragma omp atomic read new-line | |
9309 | read-stmt | |
9310 | ||
9311 | # pragma omp atomic write new-line | |
9312 | write-stmt | |
9313 | ||
9314 | # pragma omp atomic update new-line | |
9315 | update-stmt | |
9316 | ||
9317 | # pragma omp atomic capture new-line | |
9318 | capture-stmt | |
9319 | ||
9320 | # pragma omp atomic capture new-line | |
9321 | capture-block | |
9322 | ||
9323 | read-stmt: | |
9324 | v = x | |
9325 | write-stmt: | |
9326 | x = expr | |
9327 | update-stmt: | |
9328 | expression-stmt | x = x binop expr | |
9329 | capture-stmt: | |
9330 | v = x binop= expr | v = x++ | v = ++x | v = x-- | v = --x | |
9331 | capture-block: | |
9332 | { v = x; update-stmt; } | { update-stmt; v = x; } | |
9333 | ||
9334 | where x and v are lvalue expressions with scalar type. | |
9335 | ||
c2255bc4 | 9336 | LOC is the location of the #pragma token. */ |
953ff289 DN |
9337 | |
9338 | static void | |
c2255bc4 | 9339 | c_parser_omp_atomic (location_t loc, c_parser *parser) |
953ff289 | 9340 | { |
20906c66 JJ |
9341 | tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE; |
9342 | tree lhs1 = NULL_TREE, rhs1 = NULL_TREE; | |
9343 | tree stmt, orig_lhs; | |
9344 | enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR; | |
79addd1f | 9345 | struct c_expr rhs_expr; |
20906c66 | 9346 | bool structured_block = false; |
953ff289 | 9347 | |
20906c66 JJ |
9348 | if (c_parser_next_token_is (parser, CPP_NAME)) |
9349 | { | |
9350 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9351 | ||
9352 | if (!strcmp (p, "read")) | |
9353 | code = OMP_ATOMIC_READ; | |
9354 | else if (!strcmp (p, "write")) | |
9355 | code = NOP_EXPR; | |
9356 | else if (!strcmp (p, "update")) | |
9357 | code = OMP_ATOMIC; | |
9358 | else if (!strcmp (p, "capture")) | |
9359 | code = OMP_ATOMIC_CAPTURE_NEW; | |
9360 | else | |
9361 | p = NULL; | |
9362 | if (p) | |
9363 | c_parser_consume_token (parser); | |
9364 | } | |
953ff289 DN |
9365 | c_parser_skip_to_pragma_eol (parser); |
9366 | ||
20906c66 JJ |
9367 | switch (code) |
9368 | { | |
9369 | case OMP_ATOMIC_READ: | |
9370 | case NOP_EXPR: /* atomic write */ | |
9371 | v = c_parser_unary_expression (parser).value; | |
9372 | v = c_fully_fold (v, false, NULL); | |
9373 | if (v == error_mark_node) | |
9374 | goto saw_error; | |
9375 | loc = c_parser_peek_token (parser)->location; | |
9376 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9377 | goto saw_error; | |
9378 | if (code == NOP_EXPR) | |
9379 | lhs = c_parser_expression (parser).value; | |
9380 | else | |
9381 | lhs = c_parser_unary_expression (parser).value; | |
9382 | lhs = c_fully_fold (lhs, false, NULL); | |
9383 | if (lhs == error_mark_node) | |
9384 | goto saw_error; | |
9385 | if (code == NOP_EXPR) | |
9386 | { | |
9387 | /* atomic write is represented by OMP_ATOMIC with NOP_EXPR | |
9388 | opcode. */ | |
9389 | code = OMP_ATOMIC; | |
9390 | rhs = lhs; | |
9391 | lhs = v; | |
9392 | v = NULL_TREE; | |
9393 | } | |
9394 | goto done; | |
9395 | case OMP_ATOMIC_CAPTURE_NEW: | |
9396 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
9397 | { | |
9398 | c_parser_consume_token (parser); | |
9399 | structured_block = true; | |
9400 | } | |
9401 | else | |
9402 | { | |
9403 | v = c_parser_unary_expression (parser).value; | |
9404 | v = c_fully_fold (v, false, NULL); | |
9405 | if (v == error_mark_node) | |
9406 | goto saw_error; | |
9407 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9408 | goto saw_error; | |
9409 | } | |
9410 | break; | |
9411 | default: | |
9412 | break; | |
9413 | } | |
9414 | ||
9415 | /* For structured_block case we don't know yet whether | |
9416 | old or new x should be captured. */ | |
9417 | restart: | |
953ff289 | 9418 | lhs = c_parser_unary_expression (parser).value; |
928c19bb | 9419 | lhs = c_fully_fold (lhs, false, NULL); |
20906c66 | 9420 | orig_lhs = lhs; |
953ff289 DN |
9421 | switch (TREE_CODE (lhs)) |
9422 | { | |
9423 | case ERROR_MARK: | |
9424 | saw_error: | |
9425 | c_parser_skip_to_end_of_block_or_statement (parser); | |
20906c66 JJ |
9426 | if (structured_block) |
9427 | { | |
9428 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9429 | c_parser_consume_token (parser); | |
9430 | else if (code == OMP_ATOMIC_CAPTURE_NEW) | |
9431 | { | |
9432 | c_parser_skip_to_end_of_block_or_statement (parser); | |
9433 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9434 | c_parser_consume_token (parser); | |
9435 | } | |
9436 | } | |
953ff289 DN |
9437 | return; |
9438 | ||
953ff289 | 9439 | case POSTINCREMENT_EXPR: |
20906c66 JJ |
9440 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) |
9441 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9442 | /* FALLTHROUGH */ | |
9443 | case PREINCREMENT_EXPR: | |
953ff289 | 9444 | lhs = TREE_OPERAND (lhs, 0); |
20906c66 | 9445 | opcode = PLUS_EXPR; |
953ff289 DN |
9446 | rhs = integer_one_node; |
9447 | break; | |
9448 | ||
953ff289 | 9449 | case POSTDECREMENT_EXPR: |
20906c66 JJ |
9450 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) |
9451 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9452 | /* FALLTHROUGH */ | |
9453 | case PREDECREMENT_EXPR: | |
953ff289 | 9454 | lhs = TREE_OPERAND (lhs, 0); |
20906c66 | 9455 | opcode = MINUS_EXPR; |
953ff289 DN |
9456 | rhs = integer_one_node; |
9457 | break; | |
9458 | ||
f2b11865 JJ |
9459 | case COMPOUND_EXPR: |
9460 | if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR | |
9461 | && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR | |
9462 | && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR | |
9463 | && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0) | |
9464 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND | |
9465 | (TREE_OPERAND (lhs, 1), 0), 0))) | |
9466 | == BOOLEAN_TYPE) | |
9467 | /* Undo effects of boolean_increment for post {in,de}crement. */ | |
9468 | lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0); | |
9469 | /* FALLTHRU */ | |
9470 | case MODIFY_EXPR: | |
9471 | if (TREE_CODE (lhs) == MODIFY_EXPR | |
9472 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE) | |
9473 | { | |
9474 | /* Undo effects of boolean_increment. */ | |
9475 | if (integer_onep (TREE_OPERAND (lhs, 1))) | |
9476 | { | |
9477 | /* This is pre or post increment. */ | |
9478 | rhs = TREE_OPERAND (lhs, 1); | |
9479 | lhs = TREE_OPERAND (lhs, 0); | |
20906c66 JJ |
9480 | opcode = NOP_EXPR; |
9481 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
9482 | && !structured_block | |
9483 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
9484 | code = OMP_ATOMIC_CAPTURE_OLD; | |
f2b11865 JJ |
9485 | break; |
9486 | } | |
9487 | if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR | |
9488 | && TREE_OPERAND (lhs, 0) | |
9489 | == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) | |
9490 | { | |
9491 | /* This is pre or post decrement. */ | |
9492 | rhs = TREE_OPERAND (lhs, 1); | |
9493 | lhs = TREE_OPERAND (lhs, 0); | |
20906c66 JJ |
9494 | opcode = NOP_EXPR; |
9495 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
9496 | && !structured_block | |
9497 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
9498 | code = OMP_ATOMIC_CAPTURE_OLD; | |
f2b11865 JJ |
9499 | break; |
9500 | } | |
9501 | } | |
9502 | /* FALLTHRU */ | |
953ff289 DN |
9503 | default: |
9504 | switch (c_parser_peek_token (parser)->type) | |
9505 | { | |
9506 | case CPP_MULT_EQ: | |
20906c66 | 9507 | opcode = MULT_EXPR; |
953ff289 DN |
9508 | break; |
9509 | case CPP_DIV_EQ: | |
20906c66 | 9510 | opcode = TRUNC_DIV_EXPR; |
953ff289 DN |
9511 | break; |
9512 | case CPP_PLUS_EQ: | |
20906c66 | 9513 | opcode = PLUS_EXPR; |
953ff289 DN |
9514 | break; |
9515 | case CPP_MINUS_EQ: | |
20906c66 | 9516 | opcode = MINUS_EXPR; |
953ff289 DN |
9517 | break; |
9518 | case CPP_LSHIFT_EQ: | |
20906c66 | 9519 | opcode = LSHIFT_EXPR; |
953ff289 DN |
9520 | break; |
9521 | case CPP_RSHIFT_EQ: | |
20906c66 | 9522 | opcode = RSHIFT_EXPR; |
953ff289 DN |
9523 | break; |
9524 | case CPP_AND_EQ: | |
20906c66 | 9525 | opcode = BIT_AND_EXPR; |
953ff289 DN |
9526 | break; |
9527 | case CPP_OR_EQ: | |
20906c66 | 9528 | opcode = BIT_IOR_EXPR; |
953ff289 DN |
9529 | break; |
9530 | case CPP_XOR_EQ: | |
20906c66 | 9531 | opcode = BIT_XOR_EXPR; |
953ff289 | 9532 | break; |
20906c66 JJ |
9533 | case CPP_EQ: |
9534 | if (structured_block || code == OMP_ATOMIC) | |
9535 | { | |
9536 | location_t aloc = c_parser_peek_token (parser)->location; | |
9537 | location_t rhs_loc; | |
9538 | enum c_parser_prec oprec = PREC_NONE; | |
9539 | ||
9540 | c_parser_consume_token (parser); | |
9541 | rhs1 = c_parser_unary_expression (parser).value; | |
9542 | rhs1 = c_fully_fold (rhs1, false, NULL); | |
9543 | if (rhs1 == error_mark_node) | |
9544 | goto saw_error; | |
9545 | switch (c_parser_peek_token (parser)->type) | |
9546 | { | |
9547 | case CPP_SEMICOLON: | |
9548 | if (code == OMP_ATOMIC_CAPTURE_NEW) | |
9549 | { | |
9550 | code = OMP_ATOMIC_CAPTURE_OLD; | |
9551 | v = lhs; | |
9552 | lhs = NULL_TREE; | |
9553 | lhs1 = rhs1; | |
9554 | rhs1 = NULL_TREE; | |
9555 | c_parser_consume_token (parser); | |
9556 | goto restart; | |
9557 | } | |
9558 | c_parser_error (parser, | |
9559 | "invalid form of %<#pragma omp atomic%>"); | |
9560 | goto saw_error; | |
9561 | case CPP_MULT: | |
9562 | opcode = MULT_EXPR; | |
9563 | oprec = PREC_MULT; | |
9564 | break; | |
9565 | case CPP_DIV: | |
9566 | opcode = TRUNC_DIV_EXPR; | |
9567 | oprec = PREC_MULT; | |
9568 | break; | |
9569 | case CPP_PLUS: | |
9570 | opcode = PLUS_EXPR; | |
9571 | oprec = PREC_ADD; | |
9572 | break; | |
9573 | case CPP_MINUS: | |
9574 | opcode = MINUS_EXPR; | |
9575 | oprec = PREC_ADD; | |
9576 | break; | |
9577 | case CPP_LSHIFT: | |
9578 | opcode = LSHIFT_EXPR; | |
9579 | oprec = PREC_SHIFT; | |
9580 | break; | |
9581 | case CPP_RSHIFT: | |
9582 | opcode = RSHIFT_EXPR; | |
9583 | oprec = PREC_SHIFT; | |
9584 | break; | |
9585 | case CPP_AND: | |
9586 | opcode = BIT_AND_EXPR; | |
9587 | oprec = PREC_BITAND; | |
9588 | break; | |
9589 | case CPP_OR: | |
9590 | opcode = BIT_IOR_EXPR; | |
9591 | oprec = PREC_BITOR; | |
9592 | break; | |
9593 | case CPP_XOR: | |
9594 | opcode = BIT_XOR_EXPR; | |
9595 | oprec = PREC_BITXOR; | |
9596 | break; | |
9597 | default: | |
9598 | c_parser_error (parser, | |
9599 | "invalid operator for %<#pragma omp atomic%>"); | |
9600 | goto saw_error; | |
9601 | } | |
9602 | loc = aloc; | |
9603 | c_parser_consume_token (parser); | |
9604 | rhs_loc = c_parser_peek_token (parser)->location; | |
9605 | if (commutative_tree_code (opcode)) | |
9606 | oprec = (enum c_parser_prec) (oprec - 1); | |
9607 | rhs_expr = c_parser_binary_expression (parser, NULL, oprec); | |
9608 | rhs_expr = default_function_array_read_conversion (rhs_loc, | |
9609 | rhs_expr); | |
9610 | rhs = rhs_expr.value; | |
9611 | rhs = c_fully_fold (rhs, false, NULL); | |
9612 | goto stmt_done; | |
9613 | } | |
9614 | /* FALLTHROUGH */ | |
953ff289 DN |
9615 | default: |
9616 | c_parser_error (parser, | |
9617 | "invalid operator for %<#pragma omp atomic%>"); | |
9618 | goto saw_error; | |
9619 | } | |
9620 | ||
7bd11157 TT |
9621 | /* Arrange to pass the location of the assignment operator to |
9622 | c_finish_omp_atomic. */ | |
9623 | loc = c_parser_peek_token (parser)->location; | |
953ff289 | 9624 | c_parser_consume_token (parser); |
c2255bc4 AH |
9625 | { |
9626 | location_t rhs_loc = c_parser_peek_token (parser)->location; | |
9627 | rhs_expr = c_parser_expression (parser); | |
ebfbbdc5 | 9628 | rhs_expr = default_function_array_read_conversion (rhs_loc, rhs_expr); |
c2255bc4 | 9629 | } |
79addd1f | 9630 | rhs = rhs_expr.value; |
928c19bb | 9631 | rhs = c_fully_fold (rhs, false, NULL); |
953ff289 DN |
9632 | break; |
9633 | } | |
20906c66 JJ |
9634 | stmt_done: |
9635 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
9636 | { | |
9637 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
9638 | goto saw_error; | |
9639 | v = c_parser_unary_expression (parser).value; | |
9640 | v = c_fully_fold (v, false, NULL); | |
9641 | if (v == error_mark_node) | |
9642 | goto saw_error; | |
9643 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
9644 | goto saw_error; | |
9645 | lhs1 = c_parser_unary_expression (parser).value; | |
9646 | lhs1 = c_fully_fold (lhs1, false, NULL); | |
9647 | if (lhs1 == error_mark_node) | |
9648 | goto saw_error; | |
9649 | } | |
9650 | if (structured_block) | |
9651 | { | |
9652 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9653 | c_parser_require (parser, CPP_CLOSE_BRACE, "expected %<}%>"); | |
9654 | } | |
9655 | done: | |
9656 | stmt = c_finish_omp_atomic (loc, code, opcode, lhs, rhs, v, lhs1, rhs1); | |
fe89d797 MM |
9657 | if (stmt != error_mark_node) |
9658 | add_stmt (stmt); | |
20906c66 JJ |
9659 | |
9660 | if (!structured_block) | |
9661 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
953ff289 DN |
9662 | } |
9663 | ||
9664 | ||
9665 | /* OpenMP 2.5: | |
9666 | # pragma omp barrier new-line | |
9667 | */ | |
9668 | ||
9669 | static void | |
9670 | c_parser_omp_barrier (c_parser *parser) | |
9671 | { | |
c2255bc4 | 9672 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9673 | c_parser_consume_pragma (parser); |
9674 | c_parser_skip_to_pragma_eol (parser); | |
9675 | ||
c2255bc4 | 9676 | c_finish_omp_barrier (loc); |
953ff289 DN |
9677 | } |
9678 | ||
9679 | /* OpenMP 2.5: | |
9680 | # pragma omp critical [(name)] new-line | |
9681 | structured-block | |
c2255bc4 AH |
9682 | |
9683 | LOC is the location of the #pragma itself. */ | |
953ff289 DN |
9684 | |
9685 | static tree | |
c2255bc4 | 9686 | c_parser_omp_critical (location_t loc, c_parser *parser) |
953ff289 DN |
9687 | { |
9688 | tree stmt, name = NULL; | |
9689 | ||
9690 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
9691 | { | |
9692 | c_parser_consume_token (parser); | |
9693 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9694 | { | |
9695 | name = c_parser_peek_token (parser)->value; | |
9696 | c_parser_consume_token (parser); | |
9697 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9698 | } | |
9699 | else | |
9700 | c_parser_error (parser, "expected identifier"); | |
9701 | } | |
9702 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
9703 | c_parser_error (parser, "expected %<(%> or end of line"); | |
9704 | c_parser_skip_to_pragma_eol (parser); | |
9705 | ||
9706 | stmt = c_parser_omp_structured_block (parser); | |
c2255bc4 | 9707 | return c_finish_omp_critical (loc, stmt, name); |
953ff289 DN |
9708 | } |
9709 | ||
9710 | /* OpenMP 2.5: | |
9711 | # pragma omp flush flush-vars[opt] new-line | |
9712 | ||
9713 | flush-vars: | |
9714 | ( variable-list ) */ | |
9715 | ||
9716 | static void | |
9717 | c_parser_omp_flush (c_parser *parser) | |
9718 | { | |
c2255bc4 | 9719 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9720 | c_parser_consume_pragma (parser); |
9721 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
d75d71e0 | 9722 | c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 DN |
9723 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) |
9724 | c_parser_error (parser, "expected %<(%> or end of line"); | |
9725 | c_parser_skip_to_pragma_eol (parser); | |
9726 | ||
c2255bc4 | 9727 | c_finish_omp_flush (loc); |
953ff289 DN |
9728 | } |
9729 | ||
fa10beec | 9730 | /* Parse the restricted form of the for statement allowed by OpenMP. |
953ff289 | 9731 | The real trick here is to determine the loop control variable early |
c2255bc4 AH |
9732 | so that we can push a new decl if necessary to make it private. |
9733 | LOC is the location of the OMP in "#pragma omp". */ | |
953ff289 DN |
9734 | |
9735 | static tree | |
c2255bc4 AH |
9736 | c_parser_omp_for_loop (location_t loc, |
9737 | c_parser *parser, tree clauses, tree *par_clauses) | |
953ff289 | 9738 | { |
a68ab351 | 9739 | tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl; |
1d468b06 | 9740 | tree declv, condv, incrv, initv, ret = NULL; |
a68ab351 JJ |
9741 | bool fail = false, open_brace_parsed = false; |
9742 | int i, collapse = 1, nbraces = 0; | |
c2255bc4 | 9743 | location_t for_loc; |
1d468b06 | 9744 | VEC(tree,gc) *for_block = make_tree_vector (); |
a68ab351 JJ |
9745 | |
9746 | for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl)) | |
9747 | if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE) | |
9748 | collapse = tree_low_cst (OMP_CLAUSE_COLLAPSE_EXPR (cl), 0); | |
9749 | ||
9750 | gcc_assert (collapse >= 1); | |
9751 | ||
9752 | declv = make_tree_vec (collapse); | |
9753 | initv = make_tree_vec (collapse); | |
9754 | condv = make_tree_vec (collapse); | |
9755 | incrv = make_tree_vec (collapse); | |
953ff289 DN |
9756 | |
9757 | if (!c_parser_next_token_is_keyword (parser, RID_FOR)) | |
9758 | { | |
9759 | c_parser_error (parser, "for statement expected"); | |
9760 | return NULL; | |
9761 | } | |
c2255bc4 | 9762 | for_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9763 | c_parser_consume_token (parser); |
9764 | ||
a68ab351 | 9765 | for (i = 0; i < collapse; i++) |
953ff289 | 9766 | { |
a68ab351 | 9767 | int bracecount = 0; |
953ff289 | 9768 | |
a68ab351 JJ |
9769 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9770 | goto pop_scopes; | |
953ff289 | 9771 | |
a68ab351 | 9772 | /* Parse the initialization declaration or expression. */ |
2f413185 | 9773 | if (c_parser_next_tokens_start_declaration (parser)) |
a68ab351 JJ |
9774 | { |
9775 | if (i > 0) | |
1d468b06 | 9776 | VEC_safe_push (tree, gc, for_block, c_begin_compound_stmt (true)); |
f05b9d93 NP |
9777 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL); |
9778 | decl = check_for_loop_decls (for_loc, flag_isoc99); | |
a68ab351 JJ |
9779 | if (decl == NULL) |
9780 | goto error_init; | |
9781 | if (DECL_INITIAL (decl) == error_mark_node) | |
9782 | decl = error_mark_node; | |
9783 | init = decl; | |
9784 | } | |
9785 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
9786 | && c_parser_peek_2nd_token (parser)->type == CPP_EQ) | |
9787 | { | |
32e8bb8e | 9788 | struct c_expr decl_exp; |
a68ab351 | 9789 | struct c_expr init_exp; |
c9f9eb5d | 9790 | location_t init_loc; |
a68ab351 | 9791 | |
32e8bb8e ILT |
9792 | decl_exp = c_parser_postfix_expression (parser); |
9793 | decl = decl_exp.value; | |
a68ab351 JJ |
9794 | |
9795 | c_parser_require (parser, CPP_EQ, "expected %<=%>"); | |
9796 | ||
c2255bc4 | 9797 | init_loc = c_parser_peek_token (parser)->location; |
a68ab351 | 9798 | init_exp = c_parser_expr_no_commas (parser, NULL); |
ebfbbdc5 JJ |
9799 | init_exp = default_function_array_read_conversion (init_loc, |
9800 | init_exp); | |
32e8bb8e | 9801 | init = build_modify_expr (init_loc, decl, decl_exp.original_type, |
c2255bc4 | 9802 | NOP_EXPR, init_loc, init_exp.value, |
bbbbb16a | 9803 | init_exp.original_type); |
c2255bc4 | 9804 | init = c_process_expr_stmt (init_loc, init); |
953ff289 | 9805 | |
a68ab351 JJ |
9806 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
9807 | } | |
9808 | else | |
9809 | { | |
9810 | error_init: | |
9811 | c_parser_error (parser, | |
9812 | "expected iteration declaration or initialization"); | |
9813 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
9814 | "expected %<)%>"); | |
9815 | fail = true; | |
9816 | goto parse_next; | |
9817 | } | |
9818 | ||
9819 | /* Parse the loop condition. */ | |
9820 | cond = NULL_TREE; | |
9821 | if (c_parser_next_token_is_not (parser, CPP_SEMICOLON)) | |
9822 | { | |
3ba09659 | 9823 | location_t cond_loc = c_parser_peek_token (parser)->location; |
20906c66 JJ |
9824 | struct c_expr cond_expr = c_parser_binary_expression (parser, NULL, |
9825 | PREC_NONE); | |
3ba09659 | 9826 | |
c5cdb03f | 9827 | cond = cond_expr.value; |
3ba09659 | 9828 | cond = c_objc_common_truthvalue_conversion (cond_loc, cond); |
928c19bb | 9829 | cond = c_fully_fold (cond, false, NULL); |
c5cdb03f JJ |
9830 | switch (cond_expr.original_code) |
9831 | { | |
9832 | case GT_EXPR: | |
9833 | case GE_EXPR: | |
9834 | case LT_EXPR: | |
9835 | case LE_EXPR: | |
9836 | break; | |
9837 | default: | |
9838 | /* Can't be cond = error_mark_node, because we want to preserve | |
9839 | the location until c_finish_omp_for. */ | |
9840 | cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node); | |
9841 | break; | |
9842 | } | |
c9f9eb5d | 9843 | protected_set_expr_location (cond, cond_loc); |
a68ab351 | 9844 | } |
953ff289 | 9845 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
953ff289 | 9846 | |
a68ab351 JJ |
9847 | /* Parse the increment expression. */ |
9848 | incr = NULL_TREE; | |
9849 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN)) | |
c9f9eb5d AH |
9850 | { |
9851 | location_t incr_loc = c_parser_peek_token (parser)->location; | |
9852 | ||
c2255bc4 AH |
9853 | incr = c_process_expr_stmt (incr_loc, |
9854 | c_parser_expression (parser).value); | |
c9f9eb5d | 9855 | } |
a68ab351 | 9856 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
953ff289 | 9857 | |
a68ab351 JJ |
9858 | if (decl == NULL || decl == error_mark_node || init == error_mark_node) |
9859 | fail = true; | |
9860 | else | |
9861 | { | |
9862 | TREE_VEC_ELT (declv, i) = decl; | |
9863 | TREE_VEC_ELT (initv, i) = init; | |
9864 | TREE_VEC_ELT (condv, i) = cond; | |
9865 | TREE_VEC_ELT (incrv, i) = incr; | |
9866 | } | |
9867 | ||
9868 | parse_next: | |
9869 | if (i == collapse - 1) | |
9870 | break; | |
9871 | ||
9872 | /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed | |
9873 | in between the collapsed for loops to be still considered perfectly | |
9874 | nested. Hopefully the final version clarifies this. | |
9875 | For now handle (multiple) {'s and empty statements. */ | |
9876 | do | |
9877 | { | |
9878 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
9879 | { | |
9880 | c_parser_consume_token (parser); | |
9881 | break; | |
9882 | } | |
9883 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
9884 | { | |
9885 | c_parser_consume_token (parser); | |
9886 | bracecount++; | |
9887 | } | |
9888 | else if (bracecount | |
9889 | && c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
9890 | c_parser_consume_token (parser); | |
9891 | else | |
9892 | { | |
9893 | c_parser_error (parser, "not enough perfectly nested loops"); | |
9894 | if (bracecount) | |
9895 | { | |
9896 | open_brace_parsed = true; | |
9897 | bracecount--; | |
9898 | } | |
9899 | fail = true; | |
9900 | collapse = 0; | |
9901 | break; | |
9902 | } | |
9903 | } | |
9904 | while (1); | |
9905 | ||
9906 | nbraces += bracecount; | |
9907 | } | |
953ff289 | 9908 | |
953ff289 DN |
9909 | save_break = c_break_label; |
9910 | c_break_label = size_one_node; | |
9911 | save_cont = c_cont_label; | |
9912 | c_cont_label = NULL_TREE; | |
9913 | body = push_stmt_list (); | |
9914 | ||
a68ab351 JJ |
9915 | if (open_brace_parsed) |
9916 | { | |
c2255bc4 | 9917 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
9918 | stmt = c_begin_compound_stmt (true); |
9919 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 9920 | add_stmt (c_end_compound_stmt (here, stmt, true)); |
a68ab351 JJ |
9921 | } |
9922 | else | |
9923 | add_stmt (c_parser_c99_block_statement (parser)); | |
953ff289 | 9924 | if (c_cont_label) |
c2255bc4 AH |
9925 | { |
9926 | tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label); | |
9927 | SET_EXPR_LOCATION (t, loc); | |
9928 | add_stmt (t); | |
9929 | } | |
953ff289 DN |
9930 | |
9931 | body = pop_stmt_list (body); | |
9932 | c_break_label = save_break; | |
9933 | c_cont_label = save_cont; | |
9934 | ||
a68ab351 JJ |
9935 | while (nbraces) |
9936 | { | |
9937 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
9938 | { | |
9939 | c_parser_consume_token (parser); | |
9940 | nbraces--; | |
9941 | } | |
9942 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
9943 | c_parser_consume_token (parser); | |
9944 | else | |
9945 | { | |
9946 | c_parser_error (parser, "collapsed loops not perfectly nested"); | |
9947 | while (nbraces) | |
9948 | { | |
c2255bc4 | 9949 | location_t here = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
9950 | stmt = c_begin_compound_stmt (true); |
9951 | add_stmt (body); | |
9952 | c_parser_compound_statement_nostart (parser); | |
c2255bc4 | 9953 | body = c_end_compound_stmt (here, stmt, true); |
a68ab351 JJ |
9954 | nbraces--; |
9955 | } | |
9956 | goto pop_scopes; | |
9957 | } | |
9958 | } | |
9959 | ||
61c3a446 | 9960 | /* Only bother calling c_finish_omp_for if we haven't already generated |
953ff289 | 9961 | an error from the initialization parsing. */ |
a68ab351 JJ |
9962 | if (!fail) |
9963 | { | |
9964 | stmt = c_finish_omp_for (loc, declv, initv, condv, incrv, body, NULL); | |
9965 | if (stmt) | |
9966 | { | |
9967 | if (par_clauses != NULL) | |
9968 | { | |
9969 | tree *c; | |
9970 | for (c = par_clauses; *c ; ) | |
9971 | if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE | |
9972 | && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE) | |
9973 | c = &OMP_CLAUSE_CHAIN (*c); | |
9974 | else | |
9975 | { | |
9976 | for (i = 0; i < collapse; i++) | |
9977 | if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c)) | |
9978 | break; | |
9979 | if (i == collapse) | |
9980 | c = &OMP_CLAUSE_CHAIN (*c); | |
9981 | else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE) | |
9982 | { | |
3ba09659 AH |
9983 | error_at (loc, |
9984 | "iteration variable %qD should not be firstprivate", | |
9985 | OMP_CLAUSE_DECL (*c)); | |
a68ab351 JJ |
9986 | *c = OMP_CLAUSE_CHAIN (*c); |
9987 | } | |
9988 | else | |
9989 | { | |
9990 | /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES, | |
9991 | change it to shared (decl) in | |
9992 | OMP_PARALLEL_CLAUSES. */ | |
c2255bc4 AH |
9993 | tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c), |
9994 | OMP_CLAUSE_LASTPRIVATE); | |
a68ab351 JJ |
9995 | OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c); |
9996 | OMP_CLAUSE_CHAIN (l) = clauses; | |
9997 | clauses = l; | |
9998 | OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED); | |
9999 | } | |
10000 | } | |
10001 | } | |
10002 | OMP_FOR_CLAUSES (stmt) = clauses; | |
10003 | } | |
10004 | ret = stmt; | |
10005 | } | |
10006 | pop_scopes: | |
1d468b06 | 10007 | while (!VEC_empty (tree, for_block)) |
a68ab351 | 10008 | { |
c2255bc4 AH |
10009 | /* FIXME diagnostics: LOC below should be the actual location of |
10010 | this particular for block. We need to build a list of | |
10011 | locations to go along with FOR_BLOCK. */ | |
1d468b06 | 10012 | stmt = c_end_compound_stmt (loc, VEC_pop (tree, for_block), true); |
a68ab351 | 10013 | add_stmt (stmt); |
a68ab351 | 10014 | } |
1d468b06 | 10015 | release_tree_vector (for_block); |
a68ab351 | 10016 | return ret; |
953ff289 DN |
10017 | } |
10018 | ||
10019 | /* OpenMP 2.5: | |
10020 | #pragma omp for for-clause[optseq] new-line | |
10021 | for-loop | |
c2255bc4 AH |
10022 | |
10023 | LOC is the location of the #pragma token. | |
953ff289 DN |
10024 | */ |
10025 | ||
10026 | #define OMP_FOR_CLAUSE_MASK \ | |
10027 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10028 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10029 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
10030 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10031 | | (1u << PRAGMA_OMP_CLAUSE_ORDERED) \ | |
10032 | | (1u << PRAGMA_OMP_CLAUSE_SCHEDULE) \ | |
a68ab351 | 10033 | | (1u << PRAGMA_OMP_CLAUSE_COLLAPSE) \ |
953ff289 DN |
10034 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) |
10035 | ||
10036 | static tree | |
c2255bc4 | 10037 | c_parser_omp_for (location_t loc, c_parser *parser) |
953ff289 DN |
10038 | { |
10039 | tree block, clauses, ret; | |
10040 | ||
10041 | clauses = c_parser_omp_all_clauses (parser, OMP_FOR_CLAUSE_MASK, | |
10042 | "#pragma omp for"); | |
10043 | ||
10044 | block = c_begin_compound_stmt (true); | |
c2255bc4 AH |
10045 | ret = c_parser_omp_for_loop (loc, parser, clauses, NULL); |
10046 | block = c_end_compound_stmt (loc, block, true); | |
953ff289 DN |
10047 | add_stmt (block); |
10048 | ||
10049 | return ret; | |
10050 | } | |
10051 | ||
10052 | /* OpenMP 2.5: | |
10053 | # pragma omp master new-line | |
10054 | structured-block | |
c2255bc4 AH |
10055 | |
10056 | LOC is the location of the #pragma token. | |
953ff289 DN |
10057 | */ |
10058 | ||
10059 | static tree | |
c2255bc4 | 10060 | c_parser_omp_master (location_t loc, c_parser *parser) |
953ff289 DN |
10061 | { |
10062 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 10063 | return c_finish_omp_master (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
10064 | } |
10065 | ||
10066 | /* OpenMP 2.5: | |
10067 | # pragma omp ordered new-line | |
10068 | structured-block | |
c2255bc4 AH |
10069 | |
10070 | LOC is the location of the #pragma itself. | |
953ff289 DN |
10071 | */ |
10072 | ||
10073 | static tree | |
c2255bc4 | 10074 | c_parser_omp_ordered (location_t loc, c_parser *parser) |
953ff289 DN |
10075 | { |
10076 | c_parser_skip_to_pragma_eol (parser); | |
c2255bc4 | 10077 | return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser)); |
953ff289 DN |
10078 | } |
10079 | ||
10080 | /* OpenMP 2.5: | |
10081 | ||
10082 | section-scope: | |
10083 | { section-sequence } | |
10084 | ||
10085 | section-sequence: | |
10086 | section-directive[opt] structured-block | |
b8698a0f | 10087 | section-sequence section-directive structured-block |
c2255bc4 AH |
10088 | |
10089 | SECTIONS_LOC is the location of the #pragma omp sections. */ | |
953ff289 DN |
10090 | |
10091 | static tree | |
c2255bc4 | 10092 | c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser) |
953ff289 DN |
10093 | { |
10094 | tree stmt, substmt; | |
10095 | bool error_suppress = false; | |
10096 | location_t loc; | |
10097 | ||
c2255bc4 | 10098 | loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10099 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
10100 | { | |
10101 | /* Avoid skipping until the end of the block. */ | |
10102 | parser->error = false; | |
10103 | return NULL_TREE; | |
10104 | } | |
10105 | ||
10106 | stmt = push_stmt_list (); | |
10107 | ||
953ff289 DN |
10108 | if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION) |
10109 | { | |
10110 | substmt = push_stmt_list (); | |
10111 | ||
10112 | while (1) | |
10113 | { | |
10114 | c_parser_statement (parser); | |
10115 | ||
10116 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
10117 | break; | |
10118 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
10119 | break; | |
10120 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
10121 | break; | |
10122 | } | |
10123 | ||
10124 | substmt = pop_stmt_list (substmt); | |
10125 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
10126 | SET_EXPR_LOCATION (substmt, loc); | |
10127 | add_stmt (substmt); | |
10128 | } | |
10129 | ||
10130 | while (1) | |
10131 | { | |
10132 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
10133 | break; | |
10134 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
10135 | break; | |
10136 | ||
10137 | loc = c_parser_peek_token (parser)->location; | |
10138 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
10139 | { | |
10140 | c_parser_consume_pragma (parser); | |
10141 | c_parser_skip_to_pragma_eol (parser); | |
10142 | error_suppress = false; | |
10143 | } | |
10144 | else if (!error_suppress) | |
10145 | { | |
3ba09659 | 10146 | error_at (loc, "expected %<#pragma omp section%> or %<}%>"); |
953ff289 DN |
10147 | error_suppress = true; |
10148 | } | |
10149 | ||
10150 | substmt = c_parser_omp_structured_block (parser); | |
10151 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
10152 | SET_EXPR_LOCATION (substmt, loc); | |
10153 | add_stmt (substmt); | |
10154 | } | |
10155 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, | |
10156 | "expected %<#pragma omp section%> or %<}%>"); | |
10157 | ||
10158 | substmt = pop_stmt_list (stmt); | |
10159 | ||
10160 | stmt = make_node (OMP_SECTIONS); | |
c2255bc4 | 10161 | SET_EXPR_LOCATION (stmt, sections_loc); |
953ff289 DN |
10162 | TREE_TYPE (stmt) = void_type_node; |
10163 | OMP_SECTIONS_BODY (stmt) = substmt; | |
10164 | ||
10165 | return add_stmt (stmt); | |
10166 | } | |
10167 | ||
10168 | /* OpenMP 2.5: | |
10169 | # pragma omp sections sections-clause[optseq] newline | |
10170 | sections-scope | |
c2255bc4 AH |
10171 | |
10172 | LOC is the location of the #pragma token. | |
953ff289 DN |
10173 | */ |
10174 | ||
10175 | #define OMP_SECTIONS_CLAUSE_MASK \ | |
10176 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10177 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10178 | | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
10179 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10180 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
10181 | ||
10182 | static tree | |
c2255bc4 | 10183 | c_parser_omp_sections (location_t loc, c_parser *parser) |
953ff289 DN |
10184 | { |
10185 | tree block, clauses, ret; | |
10186 | ||
10187 | clauses = c_parser_omp_all_clauses (parser, OMP_SECTIONS_CLAUSE_MASK, | |
10188 | "#pragma omp sections"); | |
10189 | ||
10190 | block = c_begin_compound_stmt (true); | |
c2255bc4 | 10191 | ret = c_parser_omp_sections_scope (loc, parser); |
953ff289 DN |
10192 | if (ret) |
10193 | OMP_SECTIONS_CLAUSES (ret) = clauses; | |
c2255bc4 | 10194 | block = c_end_compound_stmt (loc, block, true); |
953ff289 DN |
10195 | add_stmt (block); |
10196 | ||
10197 | return ret; | |
10198 | } | |
10199 | ||
10200 | /* OpenMP 2.5: | |
10201 | # pragma parallel parallel-clause new-line | |
10202 | # pragma parallel for parallel-for-clause new-line | |
10203 | # pragma parallel sections parallel-sections-clause new-line | |
c2255bc4 AH |
10204 | |
10205 | LOC is the location of the #pragma token. | |
953ff289 DN |
10206 | */ |
10207 | ||
10208 | #define OMP_PARALLEL_CLAUSE_MASK \ | |
10209 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
10210 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10211 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10212 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
10213 | | (1u << PRAGMA_OMP_CLAUSE_SHARED) \ | |
10214 | | (1u << PRAGMA_OMP_CLAUSE_COPYIN) \ | |
10215 | | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
10216 | | (1u << PRAGMA_OMP_CLAUSE_NUM_THREADS)) | |
10217 | ||
10218 | static tree | |
c2255bc4 | 10219 | c_parser_omp_parallel (location_t loc, c_parser *parser) |
953ff289 DN |
10220 | { |
10221 | enum pragma_kind p_kind = PRAGMA_OMP_PARALLEL; | |
10222 | const char *p_name = "#pragma omp parallel"; | |
10223 | tree stmt, clauses, par_clause, ws_clause, block; | |
10224 | unsigned int mask = OMP_PARALLEL_CLAUSE_MASK; | |
10225 | ||
10226 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
10227 | { | |
10228 | c_parser_consume_token (parser); | |
10229 | p_kind = PRAGMA_OMP_PARALLEL_FOR; | |
10230 | p_name = "#pragma omp parallel for"; | |
10231 | mask |= OMP_FOR_CLAUSE_MASK; | |
10232 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
10233 | } | |
10234 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
10235 | { | |
10236 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10237 | if (strcmp (p, "sections") == 0) | |
10238 | { | |
10239 | c_parser_consume_token (parser); | |
10240 | p_kind = PRAGMA_OMP_PARALLEL_SECTIONS; | |
10241 | p_name = "#pragma omp parallel sections"; | |
10242 | mask |= OMP_SECTIONS_CLAUSE_MASK; | |
10243 | mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT); | |
10244 | } | |
10245 | } | |
10246 | ||
10247 | clauses = c_parser_omp_all_clauses (parser, mask, p_name); | |
10248 | ||
10249 | switch (p_kind) | |
10250 | { | |
10251 | case PRAGMA_OMP_PARALLEL: | |
10252 | block = c_begin_omp_parallel (); | |
10253 | c_parser_statement (parser); | |
c2255bc4 | 10254 | stmt = c_finish_omp_parallel (loc, clauses, block); |
953ff289 DN |
10255 | break; |
10256 | ||
10257 | case PRAGMA_OMP_PARALLEL_FOR: | |
10258 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
10259 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
10260 | c_parser_omp_for_loop (loc, parser, ws_clause, &par_clause); | |
10261 | stmt = c_finish_omp_parallel (loc, par_clause, block); | |
761041be | 10262 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
10263 | break; |
10264 | ||
10265 | case PRAGMA_OMP_PARALLEL_SECTIONS: | |
10266 | block = c_begin_omp_parallel (); | |
c2255bc4 AH |
10267 | c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause); |
10268 | stmt = c_parser_omp_sections_scope (loc, parser); | |
953ff289 DN |
10269 | if (stmt) |
10270 | OMP_SECTIONS_CLAUSES (stmt) = ws_clause; | |
c2255bc4 | 10271 | stmt = c_finish_omp_parallel (loc, par_clause, block); |
761041be | 10272 | OMP_PARALLEL_COMBINED (stmt) = 1; |
953ff289 DN |
10273 | break; |
10274 | ||
10275 | default: | |
10276 | gcc_unreachable (); | |
10277 | } | |
10278 | ||
10279 | return stmt; | |
10280 | } | |
10281 | ||
10282 | /* OpenMP 2.5: | |
10283 | # pragma omp single single-clause[optseq] new-line | |
10284 | structured-block | |
c2255bc4 AH |
10285 | |
10286 | LOC is the location of the #pragma. | |
953ff289 DN |
10287 | */ |
10288 | ||
10289 | #define OMP_SINGLE_CLAUSE_MASK \ | |
10290 | ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10291 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
10292 | | (1u << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \ | |
10293 | | (1u << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
10294 | ||
10295 | static tree | |
c2255bc4 | 10296 | c_parser_omp_single (location_t loc, c_parser *parser) |
953ff289 DN |
10297 | { |
10298 | tree stmt = make_node (OMP_SINGLE); | |
c2255bc4 | 10299 | SET_EXPR_LOCATION (stmt, loc); |
953ff289 DN |
10300 | TREE_TYPE (stmt) = void_type_node; |
10301 | ||
10302 | OMP_SINGLE_CLAUSES (stmt) | |
10303 | = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK, | |
10304 | "#pragma omp single"); | |
10305 | OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser); | |
10306 | ||
10307 | return add_stmt (stmt); | |
10308 | } | |
10309 | ||
a68ab351 JJ |
10310 | /* OpenMP 3.0: |
10311 | # pragma omp task task-clause[optseq] new-line | |
c2255bc4 AH |
10312 | |
10313 | LOC is the location of the #pragma. | |
a68ab351 JJ |
10314 | */ |
10315 | ||
10316 | #define OMP_TASK_CLAUSE_MASK \ | |
10317 | ( (1u << PRAGMA_OMP_CLAUSE_IF) \ | |
10318 | | (1u << PRAGMA_OMP_CLAUSE_UNTIED) \ | |
10319 | | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
10320 | | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
10321 | | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
20906c66 JJ |
10322 | | (1u << PRAGMA_OMP_CLAUSE_SHARED) \ |
10323 | | (1u << PRAGMA_OMP_CLAUSE_FINAL) \ | |
10324 | | (1u << PRAGMA_OMP_CLAUSE_MERGEABLE)) | |
a68ab351 JJ |
10325 | |
10326 | static tree | |
c2255bc4 | 10327 | c_parser_omp_task (location_t loc, c_parser *parser) |
a68ab351 JJ |
10328 | { |
10329 | tree clauses, block; | |
10330 | ||
10331 | clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK, | |
10332 | "#pragma omp task"); | |
10333 | ||
10334 | block = c_begin_omp_task (); | |
10335 | c_parser_statement (parser); | |
c2255bc4 | 10336 | return c_finish_omp_task (loc, clauses, block); |
a68ab351 JJ |
10337 | } |
10338 | ||
10339 | /* OpenMP 3.0: | |
10340 | # pragma omp taskwait new-line | |
10341 | */ | |
10342 | ||
10343 | static void | |
10344 | c_parser_omp_taskwait (c_parser *parser) | |
10345 | { | |
c2255bc4 | 10346 | location_t loc = c_parser_peek_token (parser)->location; |
a68ab351 JJ |
10347 | c_parser_consume_pragma (parser); |
10348 | c_parser_skip_to_pragma_eol (parser); | |
10349 | ||
c2255bc4 | 10350 | c_finish_omp_taskwait (loc); |
a68ab351 | 10351 | } |
953ff289 | 10352 | |
20906c66 JJ |
10353 | /* OpenMP 3.1: |
10354 | # pragma omp taskyield new-line | |
10355 | */ | |
10356 | ||
10357 | static void | |
10358 | c_parser_omp_taskyield (c_parser *parser) | |
10359 | { | |
10360 | location_t loc = c_parser_peek_token (parser)->location; | |
10361 | c_parser_consume_pragma (parser); | |
10362 | c_parser_skip_to_pragma_eol (parser); | |
10363 | ||
10364 | c_finish_omp_taskyield (loc); | |
10365 | } | |
10366 | ||
953ff289 DN |
10367 | /* Main entry point to parsing most OpenMP pragmas. */ |
10368 | ||
10369 | static void | |
10370 | c_parser_omp_construct (c_parser *parser) | |
10371 | { | |
10372 | enum pragma_kind p_kind; | |
10373 | location_t loc; | |
10374 | tree stmt; | |
10375 | ||
10376 | loc = c_parser_peek_token (parser)->location; | |
10377 | p_kind = c_parser_peek_token (parser)->pragma_kind; | |
10378 | c_parser_consume_pragma (parser); | |
10379 | ||
10380 | switch (p_kind) | |
10381 | { | |
10382 | case PRAGMA_OMP_ATOMIC: | |
c2255bc4 | 10383 | c_parser_omp_atomic (loc, parser); |
953ff289 DN |
10384 | return; |
10385 | case PRAGMA_OMP_CRITICAL: | |
c2255bc4 | 10386 | stmt = c_parser_omp_critical (loc, parser); |
953ff289 DN |
10387 | break; |
10388 | case PRAGMA_OMP_FOR: | |
c2255bc4 | 10389 | stmt = c_parser_omp_for (loc, parser); |
953ff289 DN |
10390 | break; |
10391 | case PRAGMA_OMP_MASTER: | |
c2255bc4 | 10392 | stmt = c_parser_omp_master (loc, parser); |
953ff289 DN |
10393 | break; |
10394 | case PRAGMA_OMP_ORDERED: | |
c2255bc4 | 10395 | stmt = c_parser_omp_ordered (loc, parser); |
953ff289 DN |
10396 | break; |
10397 | case PRAGMA_OMP_PARALLEL: | |
c2255bc4 | 10398 | stmt = c_parser_omp_parallel (loc, parser); |
953ff289 DN |
10399 | break; |
10400 | case PRAGMA_OMP_SECTIONS: | |
c2255bc4 | 10401 | stmt = c_parser_omp_sections (loc, parser); |
953ff289 DN |
10402 | break; |
10403 | case PRAGMA_OMP_SINGLE: | |
c2255bc4 | 10404 | stmt = c_parser_omp_single (loc, parser); |
953ff289 | 10405 | break; |
a68ab351 | 10406 | case PRAGMA_OMP_TASK: |
c2255bc4 | 10407 | stmt = c_parser_omp_task (loc, parser); |
a68ab351 | 10408 | break; |
953ff289 DN |
10409 | default: |
10410 | gcc_unreachable (); | |
10411 | } | |
10412 | ||
10413 | if (stmt) | |
c2255bc4 | 10414 | gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION); |
953ff289 DN |
10415 | } |
10416 | ||
10417 | ||
10418 | /* OpenMP 2.5: | |
10419 | # pragma omp threadprivate (variable-list) */ | |
10420 | ||
10421 | static void | |
10422 | c_parser_omp_threadprivate (c_parser *parser) | |
10423 | { | |
10424 | tree vars, t; | |
c2255bc4 | 10425 | location_t loc; |
953ff289 DN |
10426 | |
10427 | c_parser_consume_pragma (parser); | |
c2255bc4 | 10428 | loc = c_parser_peek_token (parser)->location; |
d75d71e0 | 10429 | vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 | 10430 | |
953ff289 DN |
10431 | /* Mark every variable in VARS to be assigned thread local storage. */ |
10432 | for (t = vars; t; t = TREE_CHAIN (t)) | |
10433 | { | |
10434 | tree v = TREE_PURPOSE (t); | |
10435 | ||
c2255bc4 AH |
10436 | /* FIXME diagnostics: Ideally we should keep individual |
10437 | locations for all the variables in the var list to make the | |
10438 | following errors more precise. Perhaps | |
10439 | c_parser_omp_var_list_parens() should construct a list of | |
10440 | locations to go along with the var list. */ | |
10441 | ||
953ff289 DN |
10442 | /* If V had already been marked threadprivate, it doesn't matter |
10443 | whether it had been used prior to this point. */ | |
5df27e4a | 10444 | if (TREE_CODE (v) != VAR_DECL) |
c2255bc4 | 10445 | error_at (loc, "%qD is not a variable", v); |
5df27e4a | 10446 | else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v)) |
c2255bc4 | 10447 | error_at (loc, "%qE declared %<threadprivate%> after first use", v); |
953ff289 | 10448 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) |
c2255bc4 | 10449 | error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v); |
5df27e4a JJ |
10450 | else if (TREE_TYPE (v) == error_mark_node) |
10451 | ; | |
953ff289 | 10452 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) |
c2255bc4 | 10453 | error_at (loc, "%<threadprivate%> %qE has incomplete type", v); |
953ff289 DN |
10454 | else |
10455 | { | |
10456 | if (! DECL_THREAD_LOCAL_P (v)) | |
10457 | { | |
10458 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
10459 | /* If rtl has been already set for this var, call | |
10460 | make_decl_rtl once again, so that encode_section_info | |
10461 | has a chance to look at the new decl flags. */ | |
10462 | if (DECL_RTL_SET_P (v)) | |
10463 | make_decl_rtl (v); | |
10464 | } | |
10465 | C_DECL_THREADPRIVATE_P (v) = 1; | |
10466 | } | |
10467 | } | |
10468 | ||
10469 | c_parser_skip_to_pragma_eol (parser); | |
10470 | } | |
10471 | ||
bc4071dd | 10472 | \f |
27bf414c JM |
10473 | /* Parse a single source file. */ |
10474 | ||
10475 | void | |
10476 | c_parse_file (void) | |
10477 | { | |
bc4071dd RH |
10478 | /* Use local storage to begin. If the first token is a pragma, parse it. |
10479 | If it is #pragma GCC pch_preprocess, then this will load a PCH file | |
10480 | which will cause garbage collection. */ | |
10481 | c_parser tparser; | |
10482 | ||
10483 | memset (&tparser, 0, sizeof tparser); | |
10484 | the_parser = &tparser; | |
10485 | ||
10486 | if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS) | |
10487 | c_parser_pragma_pch_preprocess (&tparser); | |
10488 | ||
a9429e29 | 10489 | the_parser = ggc_alloc_c_parser (); |
bc4071dd RH |
10490 | *the_parser = tparser; |
10491 | ||
f9417da1 RG |
10492 | /* Initialize EH, if we've been told to do so. */ |
10493 | if (flag_exceptions) | |
1d65f45c | 10494 | using_eh_for_cleanups (); |
f9417da1 | 10495 | |
27bf414c JM |
10496 | c_parser_translation_unit (the_parser); |
10497 | the_parser = NULL; | |
10498 | } | |
10499 | ||
10500 | #include "gt-c-parser.h" |