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27bf414c | 1 | /* Parser for C and Objective-C. |
23a5b65a | 2 | Copyright (C) 1987-2014 Free Software Foundation, Inc. |
27bf414c JM |
3 | |
4 | Parser actions based on the old Bison parser; structure somewhat | |
5 | influenced by and fragments based on the C++ parser. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 11 | Software Foundation; either version 3, or (at your option) any later |
27bf414c JM |
12 | version. |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
27bf414c JM |
22 | |
23 | /* TODO: | |
24 | ||
25 | Make sure all relevant comments, and all relevant code from all | |
26 | actions, brought over from old parser. Verify exact correspondence | |
27 | of syntax accepted. | |
28 | ||
29 | Add testcases covering every input symbol in every state in old and | |
30 | new parsers. | |
31 | ||
32 | Include full syntax for GNU C, including erroneous cases accepted | |
33 | with error messages, in syntax productions in comments. | |
34 | ||
35 | Make more diagnostics in the front end generally take an explicit | |
36 | location rather than implicitly using input_location. */ | |
37 | ||
38 | #include "config.h" | |
39 | #include "system.h" | |
40 | #include "coretypes.h" | |
f4ce02c5 | 41 | #include "tm.h" /* For rtl.h: needs enum reg_class. */ |
27bf414c | 42 | #include "tree.h" |
d8a2d370 DN |
43 | #include "stringpool.h" |
44 | #include "attribs.h" | |
45 | #include "stor-layout.h" | |
46 | #include "varasm.h" | |
47 | #include "trans-mem.h" | |
27bf414c JM |
48 | #include "langhooks.h" |
49 | #include "input.h" | |
50 | #include "cpplib.h" | |
51 | #include "timevar.h" | |
39dabefd | 52 | #include "c-family/c-pragma.h" |
27bf414c | 53 | #include "c-tree.h" |
acf0174b | 54 | #include "c-lang.h" |
27bf414c | 55 | #include "flags.h" |
27bf414c | 56 | #include "ggc.h" |
39dabefd | 57 | #include "c-family/c-common.h" |
61d3ce20 | 58 | #include "c-family/c-objc.h" |
bc4071dd RH |
59 | #include "vec.h" |
60 | #include "target.h" | |
474eccc6 | 61 | #include "cgraph.h" |
68a607d8 | 62 | #include "plugin.h" |
0645c1a2 | 63 | #include "omp-low.h" |
27bf414c JM |
64 | |
65 | \f | |
27bf414c JM |
66 | /* Initialization routine for this file. */ |
67 | ||
68 | void | |
69 | c_parse_init (void) | |
70 | { | |
71 | /* The only initialization required is of the reserved word | |
72 | identifiers. */ | |
73 | unsigned int i; | |
74 | tree id; | |
eea1139b | 75 | int mask = 0; |
27bf414c | 76 | |
36c5e70a BE |
77 | /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in |
78 | the c_token structure. */ | |
79 | gcc_assert (RID_MAX <= 255); | |
80 | ||
eea1139b ILT |
81 | mask |= D_CXXONLY; |
82 | if (!flag_isoc99) | |
83 | mask |= D_C99; | |
84 | if (flag_no_asm) | |
85 | { | |
86 | mask |= D_ASM | D_EXT; | |
87 | if (!flag_isoc99) | |
88 | mask |= D_EXT89; | |
89 | } | |
27bf414c | 90 | if (!c_dialect_objc ()) |
eea1139b | 91 | mask |= D_OBJC | D_CXX_OBJC; |
27bf414c | 92 | |
a9429e29 | 93 | ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX); |
eea1139b | 94 | for (i = 0; i < num_c_common_reswords; i++) |
27bf414c JM |
95 | { |
96 | /* If a keyword is disabled, do not enter it into the table | |
97 | and so create a canonical spelling that isn't a keyword. */ | |
eea1139b ILT |
98 | if (c_common_reswords[i].disable & mask) |
99 | { | |
100 | if (warn_cxx_compat | |
101 | && (c_common_reswords[i].disable & D_CXXWARN)) | |
102 | { | |
103 | id = get_identifier (c_common_reswords[i].word); | |
104 | C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN); | |
105 | C_IS_RESERVED_WORD (id) = 1; | |
106 | } | |
107 | continue; | |
108 | } | |
27bf414c | 109 | |
eea1139b ILT |
110 | id = get_identifier (c_common_reswords[i].word); |
111 | C_SET_RID_CODE (id, c_common_reswords[i].rid); | |
27bf414c | 112 | C_IS_RESERVED_WORD (id) = 1; |
eea1139b | 113 | ridpointers [(int) c_common_reswords[i].rid] = id; |
27bf414c JM |
114 | } |
115 | } | |
116 | \f | |
117 | /* The C lexer intermediates between the lexer in cpplib and c-lex.c | |
118 | and the C parser. Unlike the C++ lexer, the parser structure | |
119 | stores the lexer information instead of using a separate structure. | |
120 | Identifiers are separated into ordinary identifiers, type names, | |
121 | keywords and some other Objective-C types of identifiers, and some | |
122 | look-ahead is maintained. | |
123 | ||
124 | ??? It might be a good idea to lex the whole file up front (as for | |
125 | C++). It would then be possible to share more of the C and C++ | |
126 | lexer code, if desired. */ | |
127 | ||
128 | /* The following local token type is used. */ | |
129 | ||
130 | /* A keyword. */ | |
131 | #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) | |
132 | ||
27bf414c JM |
133 | /* More information about the type of a CPP_NAME token. */ |
134 | typedef enum c_id_kind { | |
135 | /* An ordinary identifier. */ | |
136 | C_ID_ID, | |
137 | /* An identifier declared as a typedef name. */ | |
138 | C_ID_TYPENAME, | |
139 | /* An identifier declared as an Objective-C class name. */ | |
140 | C_ID_CLASSNAME, | |
36c5e70a BE |
141 | /* An address space identifier. */ |
142 | C_ID_ADDRSPACE, | |
27bf414c JM |
143 | /* Not an identifier. */ |
144 | C_ID_NONE | |
145 | } c_id_kind; | |
146 | ||
147 | /* A single C token after string literal concatenation and conversion | |
148 | of preprocessing tokens to tokens. */ | |
d1b38208 | 149 | typedef struct GTY (()) c_token { |
27bf414c JM |
150 | /* The kind of token. */ |
151 | ENUM_BITFIELD (cpp_ttype) type : 8; | |
152 | /* If this token is a CPP_NAME, this value indicates whether also | |
153 | declared as some kind of type. Otherwise, it is C_ID_NONE. */ | |
154 | ENUM_BITFIELD (c_id_kind) id_kind : 8; | |
155 | /* If this token is a keyword, this value indicates which keyword. | |
156 | Otherwise, this value is RID_MAX. */ | |
157 | ENUM_BITFIELD (rid) keyword : 8; | |
bc4071dd RH |
158 | /* If this token is a CPP_PRAGMA, this indicates the pragma that |
159 | was seen. Otherwise it is PRAGMA_NONE. */ | |
13fa1171 | 160 | ENUM_BITFIELD (pragma_kind) pragma_kind : 8; |
27bf414c JM |
161 | /* The location at which this token was found. */ |
162 | location_t location; | |
8415f317 NF |
163 | /* The value associated with this token, if any. */ |
164 | tree value; | |
27bf414c JM |
165 | } c_token; |
166 | ||
167 | /* A parser structure recording information about the state and | |
168 | context of parsing. Includes lexer information with up to two | |
169 | tokens of look-ahead; more are not needed for C. */ | |
d1b38208 | 170 | typedef struct GTY(()) c_parser { |
27bf414c | 171 | /* The look-ahead tokens. */ |
acf0174b JJ |
172 | c_token * GTY((skip)) tokens; |
173 | /* Buffer for look-ahead tokens. */ | |
174 | c_token tokens_buf[2]; | |
175 | /* How many look-ahead tokens are available (0, 1 or 2, or | |
176 | more if parsing from pre-lexed tokens). */ | |
177 | unsigned int tokens_avail; | |
27bf414c JM |
178 | /* True if a syntax error is being recovered from; false otherwise. |
179 | c_parser_error sets this flag. It should clear this flag when | |
180 | enough tokens have been consumed to recover from the error. */ | |
181 | BOOL_BITFIELD error : 1; | |
bc4071dd RH |
182 | /* True if we're processing a pragma, and shouldn't automatically |
183 | consume CPP_PRAGMA_EOL. */ | |
184 | BOOL_BITFIELD in_pragma : 1; | |
b4b56033 MLI |
185 | /* True if we're parsing the outermost block of an if statement. */ |
186 | BOOL_BITFIELD in_if_block : 1; | |
46c2514e TT |
187 | /* True if we want to lex an untranslated string. */ |
188 | BOOL_BITFIELD lex_untranslated_string : 1; | |
1973201f | 189 | |
0bacb8c7 | 190 | /* Objective-C specific parser/lexer information. */ |
1973201f NP |
191 | |
192 | /* True if we are in a context where the Objective-C "PQ" keywords | |
193 | are considered keywords. */ | |
0bacb8c7 | 194 | BOOL_BITFIELD objc_pq_context : 1; |
f05b9d93 NP |
195 | /* True if we are parsing a (potential) Objective-C foreach |
196 | statement. This is set to true after we parsed 'for (' and while | |
197 | we wait for 'in' or ';' to decide if it's a standard C for loop or an | |
198 | Objective-C foreach loop. */ | |
199 | BOOL_BITFIELD objc_could_be_foreach_context : 1; | |
0bacb8c7 TT |
200 | /* The following flag is needed to contextualize Objective-C lexical |
201 | analysis. In some cases (e.g., 'int NSObject;'), it is | |
202 | undesirable to bind an identifier to an Objective-C class, even | |
203 | if a class with that name exists. */ | |
204 | BOOL_BITFIELD objc_need_raw_identifier : 1; | |
0a35513e AH |
205 | /* Nonzero if we're processing a __transaction statement. The value |
206 | is 1 | TM_STMT_ATTR_*. */ | |
207 | unsigned int in_transaction : 4; | |
668ea4b1 IS |
208 | /* True if we are in a context where the Objective-C "Property attribute" |
209 | keywords are valid. */ | |
210 | BOOL_BITFIELD objc_property_attr_context : 1; | |
41958c28 BI |
211 | |
212 | /* Cilk Plus specific parser/lexer information. */ | |
213 | ||
214 | /* Buffer to hold all the tokens from parsing the vector attribute for the | |
215 | SIMD-enabled functions (formerly known as elemental functions). */ | |
216 | vec <c_token, va_gc> *cilk_simd_fn_tokens; | |
27bf414c JM |
217 | } c_parser; |
218 | ||
bc4071dd RH |
219 | |
220 | /* The actual parser and external interface. ??? Does this need to be | |
221 | garbage-collected? */ | |
222 | ||
223 | static GTY (()) c_parser *the_parser; | |
224 | ||
27bf414c JM |
225 | /* Read in and lex a single token, storing it in *TOKEN. */ |
226 | ||
227 | static void | |
0bacb8c7 | 228 | c_lex_one_token (c_parser *parser, c_token *token) |
27bf414c JM |
229 | { |
230 | timevar_push (TV_LEX); | |
bc4071dd | 231 | |
46c2514e TT |
232 | token->type = c_lex_with_flags (&token->value, &token->location, NULL, |
233 | (parser->lex_untranslated_string | |
234 | ? C_LEX_STRING_NO_TRANSLATE : 0)); | |
bc4071dd RH |
235 | token->id_kind = C_ID_NONE; |
236 | token->keyword = RID_MAX; | |
237 | token->pragma_kind = PRAGMA_NONE; | |
bc4071dd | 238 | |
27bf414c JM |
239 | switch (token->type) |
240 | { | |
241 | case CPP_NAME: | |
27bf414c JM |
242 | { |
243 | tree decl; | |
244 | ||
0bacb8c7 TT |
245 | bool objc_force_identifier = parser->objc_need_raw_identifier; |
246 | if (c_dialect_objc ()) | |
247 | parser->objc_need_raw_identifier = false; | |
27bf414c JM |
248 | |
249 | if (C_IS_RESERVED_WORD (token->value)) | |
250 | { | |
251 | enum rid rid_code = C_RID_CODE (token->value); | |
252 | ||
eea1139b ILT |
253 | if (rid_code == RID_CXX_COMPAT_WARN) |
254 | { | |
3ba09659 AH |
255 | warning_at (token->location, |
256 | OPT_Wc___compat, | |
88388a52 JM |
257 | "identifier %qE conflicts with C++ keyword", |
258 | token->value); | |
eea1139b | 259 | } |
36c5e70a BE |
260 | else if (rid_code >= RID_FIRST_ADDR_SPACE |
261 | && rid_code <= RID_LAST_ADDR_SPACE) | |
262 | { | |
263 | token->id_kind = C_ID_ADDRSPACE; | |
264 | token->keyword = rid_code; | |
265 | break; | |
266 | } | |
1973201f | 267 | else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code)) |
27bf414c | 268 | { |
1973201f NP |
269 | /* We found an Objective-C "pq" keyword (in, out, |
270 | inout, bycopy, byref, oneway). They need special | |
271 | care because the interpretation depends on the | |
d853ee42 | 272 | context. */ |
1973201f | 273 | if (parser->objc_pq_context) |
27bf414c | 274 | { |
27bf414c JM |
275 | token->type = CPP_KEYWORD; |
276 | token->keyword = rid_code; | |
277 | break; | |
278 | } | |
f05b9d93 NP |
279 | else if (parser->objc_could_be_foreach_context |
280 | && rid_code == RID_IN) | |
281 | { | |
282 | /* We are in Objective-C, inside a (potential) | |
283 | foreach context (which means after having | |
284 | parsed 'for (', but before having parsed ';'), | |
285 | and we found 'in'. We consider it the keyword | |
286 | which terminates the declaration at the | |
287 | beginning of a foreach-statement. Note that | |
288 | this means you can't use 'in' for anything else | |
289 | in that context; in particular, in Objective-C | |
290 | you can't use 'in' as the name of the running | |
291 | variable in a C for loop. We could potentially | |
292 | try to add code here to disambiguate, but it | |
d853ee42 | 293 | seems a reasonable limitation. */ |
f05b9d93 NP |
294 | token->type = CPP_KEYWORD; |
295 | token->keyword = rid_code; | |
296 | break; | |
297 | } | |
1973201f NP |
298 | /* Else, "pq" keywords outside of the "pq" context are |
299 | not keywords, and we fall through to the code for | |
d853ee42 | 300 | normal tokens. */ |
1973201f | 301 | } |
668ea4b1 IS |
302 | else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code)) |
303 | { | |
d853ee42 NP |
304 | /* We found an Objective-C "property attribute" |
305 | keyword (getter, setter, readonly, etc). These are | |
668ea4b1 IS |
306 | only valid in the property context. */ |
307 | if (parser->objc_property_attr_context) | |
308 | { | |
309 | token->type = CPP_KEYWORD; | |
310 | token->keyword = rid_code; | |
311 | break; | |
312 | } | |
313 | /* Else they are not special keywords. | |
314 | */ | |
315 | } | |
1973201f NP |
316 | else if (c_dialect_objc () |
317 | && (OBJC_IS_AT_KEYWORD (rid_code) | |
318 | || OBJC_IS_CXX_KEYWORD (rid_code))) | |
319 | { | |
320 | /* We found one of the Objective-C "@" keywords (defs, | |
321 | selector, synchronized, etc) or one of the | |
322 | Objective-C "cxx" keywords (class, private, | |
323 | protected, public, try, catch, throw) without a | |
324 | preceding '@' sign. Do nothing and fall through to | |
325 | the code for normal tokens (in C++ we would still | |
d853ee42 | 326 | consider the CXX ones keywords, but not in C). */ |
1973201f | 327 | ; |
27bf414c JM |
328 | } |
329 | else | |
330 | { | |
27bf414c JM |
331 | token->type = CPP_KEYWORD; |
332 | token->keyword = rid_code; | |
333 | break; | |
334 | } | |
335 | } | |
336 | ||
337 | decl = lookup_name (token->value); | |
338 | if (decl) | |
339 | { | |
340 | if (TREE_CODE (decl) == TYPE_DECL) | |
341 | { | |
342 | token->id_kind = C_ID_TYPENAME; | |
343 | break; | |
344 | } | |
345 | } | |
346 | else if (c_dialect_objc ()) | |
347 | { | |
348 | tree objc_interface_decl = objc_is_class_name (token->value); | |
349 | /* Objective-C class names are in the same namespace as | |
350 | variables and typedefs, and hence are shadowed by local | |
351 | declarations. */ | |
352 | if (objc_interface_decl | |
0d8a2528 | 353 | && (!objc_force_identifier || global_bindings_p ())) |
27bf414c JM |
354 | { |
355 | token->value = objc_interface_decl; | |
356 | token->id_kind = C_ID_CLASSNAME; | |
357 | break; | |
358 | } | |
359 | } | |
bc4071dd | 360 | token->id_kind = C_ID_ID; |
27bf414c | 361 | } |
27bf414c JM |
362 | break; |
363 | case CPP_AT_NAME: | |
364 | /* This only happens in Objective-C; it must be a keyword. */ | |
365 | token->type = CPP_KEYWORD; | |
49b91f05 NP |
366 | switch (C_RID_CODE (token->value)) |
367 | { | |
368 | /* Replace 'class' with '@class', 'private' with '@private', | |
369 | etc. This prevents confusion with the C++ keyword | |
370 | 'class', and makes the tokens consistent with other | |
371 | Objective-C 'AT' keywords. For example '@class' is | |
372 | reported as RID_AT_CLASS which is consistent with | |
373 | '@synchronized', which is reported as | |
374 | RID_AT_SYNCHRONIZED. | |
375 | */ | |
376 | case RID_CLASS: token->keyword = RID_AT_CLASS; break; | |
377 | case RID_PRIVATE: token->keyword = RID_AT_PRIVATE; break; | |
378 | case RID_PROTECTED: token->keyword = RID_AT_PROTECTED; break; | |
379 | case RID_PUBLIC: token->keyword = RID_AT_PUBLIC; break; | |
380 | case RID_THROW: token->keyword = RID_AT_THROW; break; | |
381 | case RID_TRY: token->keyword = RID_AT_TRY; break; | |
382 | case RID_CATCH: token->keyword = RID_AT_CATCH; break; | |
383 | default: token->keyword = C_RID_CODE (token->value); | |
384 | } | |
27bf414c JM |
385 | break; |
386 | case CPP_COLON: | |
387 | case CPP_COMMA: | |
388 | case CPP_CLOSE_PAREN: | |
389 | case CPP_SEMICOLON: | |
390 | /* These tokens may affect the interpretation of any identifiers | |
391 | following, if doing Objective-C. */ | |
0bacb8c7 TT |
392 | if (c_dialect_objc ()) |
393 | parser->objc_need_raw_identifier = false; | |
bc4071dd RH |
394 | break; |
395 | case CPP_PRAGMA: | |
396 | /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */ | |
d75d71e0 | 397 | token->pragma_kind = (enum pragma_kind) TREE_INT_CST_LOW (token->value); |
bc4071dd | 398 | token->value = NULL; |
27bf414c JM |
399 | break; |
400 | default: | |
27bf414c JM |
401 | break; |
402 | } | |
403 | timevar_pop (TV_LEX); | |
404 | } | |
405 | ||
406 | /* Return a pointer to the next token from PARSER, reading it in if | |
407 | necessary. */ | |
408 | ||
409 | static inline c_token * | |
410 | c_parser_peek_token (c_parser *parser) | |
411 | { | |
412 | if (parser->tokens_avail == 0) | |
413 | { | |
0bacb8c7 | 414 | c_lex_one_token (parser, &parser->tokens[0]); |
27bf414c JM |
415 | parser->tokens_avail = 1; |
416 | } | |
417 | return &parser->tokens[0]; | |
418 | } | |
419 | ||
420 | /* Return true if the next token from PARSER has the indicated | |
421 | TYPE. */ | |
422 | ||
423 | static inline bool | |
424 | c_parser_next_token_is (c_parser *parser, enum cpp_ttype type) | |
425 | { | |
426 | return c_parser_peek_token (parser)->type == type; | |
427 | } | |
428 | ||
429 | /* Return true if the next token from PARSER does not have the | |
430 | indicated TYPE. */ | |
431 | ||
432 | static inline bool | |
433 | c_parser_next_token_is_not (c_parser *parser, enum cpp_ttype type) | |
434 | { | |
435 | return !c_parser_next_token_is (parser, type); | |
436 | } | |
437 | ||
438 | /* Return true if the next token from PARSER is the indicated | |
439 | KEYWORD. */ | |
440 | ||
441 | static inline bool | |
442 | c_parser_next_token_is_keyword (c_parser *parser, enum rid keyword) | |
443 | { | |
dbc518f0 | 444 | return c_parser_peek_token (parser)->keyword == keyword; |
27bf414c JM |
445 | } |
446 | ||
29ce73cb PB |
447 | /* Return a pointer to the next-but-one token from PARSER, reading it |
448 | in if necessary. The next token is already read in. */ | |
449 | ||
450 | static c_token * | |
451 | c_parser_peek_2nd_token (c_parser *parser) | |
452 | { | |
453 | if (parser->tokens_avail >= 2) | |
454 | return &parser->tokens[1]; | |
455 | gcc_assert (parser->tokens_avail == 1); | |
456 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
457 | gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL); | |
458 | c_lex_one_token (parser, &parser->tokens[1]); | |
459 | parser->tokens_avail = 2; | |
460 | return &parser->tokens[1]; | |
461 | } | |
462 | ||
27bf414c JM |
463 | /* Return true if TOKEN can start a type name, |
464 | false otherwise. */ | |
465 | static bool | |
466 | c_token_starts_typename (c_token *token) | |
467 | { | |
468 | switch (token->type) | |
469 | { | |
470 | case CPP_NAME: | |
471 | switch (token->id_kind) | |
472 | { | |
473 | case C_ID_ID: | |
474 | return false; | |
36c5e70a BE |
475 | case C_ID_ADDRSPACE: |
476 | return true; | |
27bf414c JM |
477 | case C_ID_TYPENAME: |
478 | return true; | |
479 | case C_ID_CLASSNAME: | |
480 | gcc_assert (c_dialect_objc ()); | |
481 | return true; | |
482 | default: | |
483 | gcc_unreachable (); | |
484 | } | |
485 | case CPP_KEYWORD: | |
486 | switch (token->keyword) | |
487 | { | |
488 | case RID_UNSIGNED: | |
489 | case RID_LONG: | |
a6766312 | 490 | case RID_INT128: |
27bf414c JM |
491 | case RID_SHORT: |
492 | case RID_SIGNED: | |
493 | case RID_COMPLEX: | |
494 | case RID_INT: | |
495 | case RID_CHAR: | |
496 | case RID_FLOAT: | |
497 | case RID_DOUBLE: | |
498 | case RID_VOID: | |
9a8ce21f JG |
499 | case RID_DFLOAT32: |
500 | case RID_DFLOAT64: | |
501 | case RID_DFLOAT128: | |
27bf414c JM |
502 | case RID_BOOL: |
503 | case RID_ENUM: | |
504 | case RID_STRUCT: | |
505 | case RID_UNION: | |
506 | case RID_TYPEOF: | |
507 | case RID_CONST: | |
267bac10 | 508 | case RID_ATOMIC: |
27bf414c JM |
509 | case RID_VOLATILE: |
510 | case RID_RESTRICT: | |
511 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
512 | case RID_FRACT: |
513 | case RID_ACCUM: | |
514 | case RID_SAT: | |
38b7bc7f | 515 | case RID_AUTO_TYPE: |
27bf414c JM |
516 | return true; |
517 | default: | |
518 | return false; | |
519 | } | |
520 | case CPP_LESS: | |
521 | if (c_dialect_objc ()) | |
522 | return true; | |
523 | return false; | |
524 | default: | |
525 | return false; | |
526 | } | |
527 | } | |
528 | ||
29ce73cb PB |
529 | enum c_lookahead_kind { |
530 | /* Always treat unknown identifiers as typenames. */ | |
531 | cla_prefer_type, | |
532 | ||
533 | /* Could be parsing a nonabstract declarator. Only treat an identifier | |
534 | as a typename if followed by another identifier or a star. */ | |
535 | cla_nonabstract_decl, | |
536 | ||
537 | /* Never treat identifiers as typenames. */ | |
538 | cla_prefer_id | |
539 | }; | |
540 | ||
27bf414c | 541 | /* Return true if the next token from PARSER can start a type name, |
29ce73cb PB |
542 | false otherwise. LA specifies how to do lookahead in order to |
543 | detect unknown type names. If unsure, pick CLA_PREFER_ID. */ | |
544 | ||
27bf414c | 545 | static inline bool |
29ce73cb | 546 | c_parser_next_tokens_start_typename (c_parser *parser, enum c_lookahead_kind la) |
27bf414c JM |
547 | { |
548 | c_token *token = c_parser_peek_token (parser); | |
29ce73cb PB |
549 | if (c_token_starts_typename (token)) |
550 | return true; | |
551 | ||
552 | /* Try a bit harder to detect an unknown typename. */ | |
553 | if (la != cla_prefer_id | |
554 | && token->type == CPP_NAME | |
555 | && token->id_kind == C_ID_ID | |
556 | ||
557 | /* Do not try too hard when we could have "object in array". */ | |
558 | && !parser->objc_could_be_foreach_context | |
559 | ||
560 | && (la == cla_prefer_type | |
561 | || c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
562 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
563 | ||
564 | /* Only unknown identifiers. */ | |
565 | && !lookup_name (token->value)) | |
566 | return true; | |
567 | ||
568 | return false; | |
27bf414c JM |
569 | } |
570 | ||
f725e721 PB |
571 | /* Return true if TOKEN is a type qualifier, false otherwise. */ |
572 | static bool | |
573 | c_token_is_qualifier (c_token *token) | |
574 | { | |
575 | switch (token->type) | |
576 | { | |
577 | case CPP_NAME: | |
578 | switch (token->id_kind) | |
579 | { | |
580 | case C_ID_ADDRSPACE: | |
581 | return true; | |
582 | default: | |
583 | return false; | |
584 | } | |
585 | case CPP_KEYWORD: | |
586 | switch (token->keyword) | |
587 | { | |
588 | case RID_CONST: | |
589 | case RID_VOLATILE: | |
590 | case RID_RESTRICT: | |
591 | case RID_ATTRIBUTE: | |
267bac10 | 592 | case RID_ATOMIC: |
f725e721 PB |
593 | return true; |
594 | default: | |
595 | return false; | |
596 | } | |
597 | case CPP_LESS: | |
598 | return false; | |
599 | default: | |
600 | gcc_unreachable (); | |
601 | } | |
602 | } | |
603 | ||
604 | /* Return true if the next token from PARSER is a type qualifier, | |
605 | false otherwise. */ | |
606 | static inline bool | |
607 | c_parser_next_token_is_qualifier (c_parser *parser) | |
608 | { | |
609 | c_token *token = c_parser_peek_token (parser); | |
610 | return c_token_is_qualifier (token); | |
611 | } | |
612 | ||
27bf414c JM |
613 | /* Return true if TOKEN can start declaration specifiers, false |
614 | otherwise. */ | |
615 | static bool | |
616 | c_token_starts_declspecs (c_token *token) | |
617 | { | |
618 | switch (token->type) | |
619 | { | |
620 | case CPP_NAME: | |
621 | switch (token->id_kind) | |
622 | { | |
623 | case C_ID_ID: | |
624 | return false; | |
36c5e70a BE |
625 | case C_ID_ADDRSPACE: |
626 | return true; | |
27bf414c JM |
627 | case C_ID_TYPENAME: |
628 | return true; | |
629 | case C_ID_CLASSNAME: | |
630 | gcc_assert (c_dialect_objc ()); | |
631 | return true; | |
632 | default: | |
633 | gcc_unreachable (); | |
634 | } | |
635 | case CPP_KEYWORD: | |
636 | switch (token->keyword) | |
637 | { | |
638 | case RID_STATIC: | |
639 | case RID_EXTERN: | |
640 | case RID_REGISTER: | |
641 | case RID_TYPEDEF: | |
642 | case RID_INLINE: | |
bbceee64 | 643 | case RID_NORETURN: |
27bf414c JM |
644 | case RID_AUTO: |
645 | case RID_THREAD: | |
646 | case RID_UNSIGNED: | |
647 | case RID_LONG: | |
a6766312 | 648 | case RID_INT128: |
27bf414c JM |
649 | case RID_SHORT: |
650 | case RID_SIGNED: | |
651 | case RID_COMPLEX: | |
652 | case RID_INT: | |
653 | case RID_CHAR: | |
654 | case RID_FLOAT: | |
655 | case RID_DOUBLE: | |
656 | case RID_VOID: | |
9a8ce21f JG |
657 | case RID_DFLOAT32: |
658 | case RID_DFLOAT64: | |
659 | case RID_DFLOAT128: | |
27bf414c JM |
660 | case RID_BOOL: |
661 | case RID_ENUM: | |
662 | case RID_STRUCT: | |
663 | case RID_UNION: | |
664 | case RID_TYPEOF: | |
665 | case RID_CONST: | |
666 | case RID_VOLATILE: | |
667 | case RID_RESTRICT: | |
668 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
669 | case RID_FRACT: |
670 | case RID_ACCUM: | |
671 | case RID_SAT: | |
d19fa6b5 | 672 | case RID_ALIGNAS: |
267bac10 | 673 | case RID_ATOMIC: |
38b7bc7f | 674 | case RID_AUTO_TYPE: |
27bf414c JM |
675 | return true; |
676 | default: | |
677 | return false; | |
678 | } | |
679 | case CPP_LESS: | |
680 | if (c_dialect_objc ()) | |
681 | return true; | |
682 | return false; | |
683 | default: | |
684 | return false; | |
685 | } | |
686 | } | |
687 | ||
32912286 JM |
688 | |
689 | /* Return true if TOKEN can start declaration specifiers or a static | |
690 | assertion, false otherwise. */ | |
691 | static bool | |
692 | c_token_starts_declaration (c_token *token) | |
693 | { | |
694 | if (c_token_starts_declspecs (token) | |
695 | || token->keyword == RID_STATIC_ASSERT) | |
696 | return true; | |
697 | else | |
698 | return false; | |
699 | } | |
700 | ||
27bf414c JM |
701 | /* Return true if the next token from PARSER can start declaration |
702 | specifiers, false otherwise. */ | |
703 | static inline bool | |
704 | c_parser_next_token_starts_declspecs (c_parser *parser) | |
705 | { | |
706 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
707 | |
708 | /* In Objective-C, a classname normally starts a declspecs unless it | |
709 | is immediately followed by a dot. In that case, it is the | |
710 | Objective-C 2.0 "dot-syntax" for class objects, ie, calls the | |
711 | setter/getter on the class. c_token_starts_declspecs() can't | |
712 | differentiate between the two cases because it only checks the | |
713 | current token, so we have a special check here. */ | |
714 | if (c_dialect_objc () | |
715 | && token->type == CPP_NAME | |
716 | && token->id_kind == C_ID_CLASSNAME | |
717 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
718 | return false; | |
719 | ||
27bf414c JM |
720 | return c_token_starts_declspecs (token); |
721 | } | |
722 | ||
2f413185 | 723 | /* Return true if the next tokens from PARSER can start declaration |
32912286 JM |
724 | specifiers or a static assertion, false otherwise. */ |
725 | static inline bool | |
2f413185 | 726 | c_parser_next_tokens_start_declaration (c_parser *parser) |
32912286 JM |
727 | { |
728 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
729 | |
730 | /* Same as above. */ | |
731 | if (c_dialect_objc () | |
732 | && token->type == CPP_NAME | |
733 | && token->id_kind == C_ID_CLASSNAME | |
734 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
735 | return false; | |
736 | ||
2f413185 PB |
737 | /* Labels do not start declarations. */ |
738 | if (token->type == CPP_NAME | |
739 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
740 | return false; | |
741 | ||
742 | if (c_token_starts_declaration (token)) | |
743 | return true; | |
744 | ||
29ce73cb | 745 | if (c_parser_next_tokens_start_typename (parser, cla_nonabstract_decl)) |
2f413185 PB |
746 | return true; |
747 | ||
748 | return false; | |
32912286 JM |
749 | } |
750 | ||
27bf414c JM |
751 | /* Consume the next token from PARSER. */ |
752 | ||
753 | static void | |
754 | c_parser_consume_token (c_parser *parser) | |
755 | { | |
bc4071dd RH |
756 | gcc_assert (parser->tokens_avail >= 1); |
757 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
758 | gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL); | |
759 | gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA); | |
acf0174b JJ |
760 | if (parser->tokens != &parser->tokens_buf[0]) |
761 | parser->tokens++; | |
762 | else if (parser->tokens_avail == 2) | |
27bf414c | 763 | parser->tokens[0] = parser->tokens[1]; |
27bf414c JM |
764 | parser->tokens_avail--; |
765 | } | |
766 | ||
bc4071dd RH |
767 | /* Expect the current token to be a #pragma. Consume it and remember |
768 | that we've begun parsing a pragma. */ | |
769 | ||
770 | static void | |
771 | c_parser_consume_pragma (c_parser *parser) | |
772 | { | |
773 | gcc_assert (!parser->in_pragma); | |
774 | gcc_assert (parser->tokens_avail >= 1); | |
775 | gcc_assert (parser->tokens[0].type == CPP_PRAGMA); | |
acf0174b JJ |
776 | if (parser->tokens != &parser->tokens_buf[0]) |
777 | parser->tokens++; | |
778 | else if (parser->tokens_avail == 2) | |
bc4071dd RH |
779 | parser->tokens[0] = parser->tokens[1]; |
780 | parser->tokens_avail--; | |
781 | parser->in_pragma = true; | |
782 | } | |
783 | ||
8400e75e | 784 | /* Update the global input_location from TOKEN. */ |
27bf414c JM |
785 | static inline void |
786 | c_parser_set_source_position_from_token (c_token *token) | |
787 | { | |
788 | if (token->type != CPP_EOF) | |
789 | { | |
790 | input_location = token->location; | |
27bf414c JM |
791 | } |
792 | } | |
793 | ||
27bf414c JM |
794 | /* Issue a diagnostic of the form |
795 | FILE:LINE: MESSAGE before TOKEN | |
796 | where TOKEN is the next token in the input stream of PARSER. | |
797 | MESSAGE (specified by the caller) is usually of the form "expected | |
798 | OTHER-TOKEN". | |
799 | ||
800 | Do not issue a diagnostic if still recovering from an error. | |
801 | ||
802 | ??? This is taken from the C++ parser, but building up messages in | |
803 | this way is not i18n-friendly and some other approach should be | |
804 | used. */ | |
805 | ||
806 | static void | |
4b794eaf | 807 | c_parser_error (c_parser *parser, const char *gmsgid) |
27bf414c JM |
808 | { |
809 | c_token *token = c_parser_peek_token (parser); | |
810 | if (parser->error) | |
811 | return; | |
812 | parser->error = true; | |
4b794eaf | 813 | if (!gmsgid) |
27bf414c JM |
814 | return; |
815 | /* This diagnostic makes more sense if it is tagged to the line of | |
816 | the token we just peeked at. */ | |
817 | c_parser_set_source_position_from_token (token); | |
4b794eaf | 818 | c_parse_error (gmsgid, |
27bf414c JM |
819 | /* Because c_parse_error does not understand |
820 | CPP_KEYWORD, keywords are treated like | |
821 | identifiers. */ | |
822 | (token->type == CPP_KEYWORD ? CPP_NAME : token->type), | |
cfc93532 MLI |
823 | /* ??? The C parser does not save the cpp flags of a |
824 | token, we need to pass 0 here and we will not get | |
825 | the source spelling of some tokens but rather the | |
826 | canonical spelling. */ | |
827 | token->value, /*flags=*/0); | |
27bf414c JM |
828 | } |
829 | ||
830 | /* If the next token is of the indicated TYPE, consume it. Otherwise, | |
831 | issue the error MSGID. If MSGID is NULL then a message has already | |
832 | been produced and no message will be produced this time. Returns | |
833 | true if found, false otherwise. */ | |
834 | ||
835 | static bool | |
836 | c_parser_require (c_parser *parser, | |
837 | enum cpp_ttype type, | |
838 | const char *msgid) | |
839 | { | |
840 | if (c_parser_next_token_is (parser, type)) | |
841 | { | |
842 | c_parser_consume_token (parser); | |
843 | return true; | |
844 | } | |
845 | else | |
846 | { | |
847 | c_parser_error (parser, msgid); | |
848 | return false; | |
849 | } | |
850 | } | |
851 | ||
852 | /* If the next token is the indicated keyword, consume it. Otherwise, | |
853 | issue the error MSGID. Returns true if found, false otherwise. */ | |
854 | ||
855 | static bool | |
856 | c_parser_require_keyword (c_parser *parser, | |
857 | enum rid keyword, | |
858 | const char *msgid) | |
859 | { | |
860 | if (c_parser_next_token_is_keyword (parser, keyword)) | |
861 | { | |
862 | c_parser_consume_token (parser); | |
863 | return true; | |
864 | } | |
865 | else | |
866 | { | |
867 | c_parser_error (parser, msgid); | |
868 | return false; | |
869 | } | |
870 | } | |
871 | ||
872 | /* Like c_parser_require, except that tokens will be skipped until the | |
873 | desired token is found. An error message is still produced if the | |
874 | next token is not as expected. If MSGID is NULL then a message has | |
875 | already been produced and no message will be produced this | |
876 | time. */ | |
877 | ||
878 | static void | |
879 | c_parser_skip_until_found (c_parser *parser, | |
880 | enum cpp_ttype type, | |
881 | const char *msgid) | |
882 | { | |
883 | unsigned nesting_depth = 0; | |
884 | ||
885 | if (c_parser_require (parser, type, msgid)) | |
886 | return; | |
887 | ||
888 | /* Skip tokens until the desired token is found. */ | |
889 | while (true) | |
890 | { | |
891 | /* Peek at the next token. */ | |
892 | c_token *token = c_parser_peek_token (parser); | |
893 | /* If we've reached the token we want, consume it and stop. */ | |
894 | if (token->type == type && !nesting_depth) | |
895 | { | |
896 | c_parser_consume_token (parser); | |
897 | break; | |
898 | } | |
bc4071dd | 899 | |
27bf414c JM |
900 | /* If we've run out of tokens, stop. */ |
901 | if (token->type == CPP_EOF) | |
902 | return; | |
bc4071dd RH |
903 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
904 | return; | |
27bf414c JM |
905 | if (token->type == CPP_OPEN_BRACE |
906 | || token->type == CPP_OPEN_PAREN | |
907 | || token->type == CPP_OPEN_SQUARE) | |
908 | ++nesting_depth; | |
909 | else if (token->type == CPP_CLOSE_BRACE | |
910 | || token->type == CPP_CLOSE_PAREN | |
911 | || token->type == CPP_CLOSE_SQUARE) | |
912 | { | |
913 | if (nesting_depth-- == 0) | |
914 | break; | |
915 | } | |
916 | /* Consume this token. */ | |
917 | c_parser_consume_token (parser); | |
918 | } | |
919 | parser->error = false; | |
920 | } | |
921 | ||
922 | /* Skip tokens until the end of a parameter is found, but do not | |
923 | consume the comma, semicolon or closing delimiter. */ | |
924 | ||
925 | static void | |
926 | c_parser_skip_to_end_of_parameter (c_parser *parser) | |
927 | { | |
928 | unsigned nesting_depth = 0; | |
929 | ||
930 | while (true) | |
931 | { | |
932 | c_token *token = c_parser_peek_token (parser); | |
933 | if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON) | |
934 | && !nesting_depth) | |
935 | break; | |
936 | /* If we've run out of tokens, stop. */ | |
937 | if (token->type == CPP_EOF) | |
938 | return; | |
bc4071dd RH |
939 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
940 | return; | |
27bf414c JM |
941 | if (token->type == CPP_OPEN_BRACE |
942 | || token->type == CPP_OPEN_PAREN | |
943 | || token->type == CPP_OPEN_SQUARE) | |
944 | ++nesting_depth; | |
945 | else if (token->type == CPP_CLOSE_BRACE | |
946 | || token->type == CPP_CLOSE_PAREN | |
947 | || token->type == CPP_CLOSE_SQUARE) | |
948 | { | |
949 | if (nesting_depth-- == 0) | |
950 | break; | |
951 | } | |
952 | /* Consume this token. */ | |
953 | c_parser_consume_token (parser); | |
954 | } | |
955 | parser->error = false; | |
956 | } | |
957 | ||
bc4071dd RH |
958 | /* Expect to be at the end of the pragma directive and consume an |
959 | end of line marker. */ | |
960 | ||
961 | static void | |
962 | c_parser_skip_to_pragma_eol (c_parser *parser) | |
963 | { | |
964 | gcc_assert (parser->in_pragma); | |
965 | parser->in_pragma = false; | |
966 | ||
967 | if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line")) | |
968 | while (true) | |
969 | { | |
970 | c_token *token = c_parser_peek_token (parser); | |
971 | if (token->type == CPP_EOF) | |
972 | break; | |
973 | if (token->type == CPP_PRAGMA_EOL) | |
974 | { | |
975 | c_parser_consume_token (parser); | |
976 | break; | |
977 | } | |
978 | c_parser_consume_token (parser); | |
979 | } | |
980 | ||
981 | parser->error = false; | |
982 | } | |
27bf414c | 983 | |
2a83cc52 RH |
984 | /* Skip tokens until we have consumed an entire block, or until we |
985 | have consumed a non-nested ';'. */ | |
986 | ||
987 | static void | |
988 | c_parser_skip_to_end_of_block_or_statement (c_parser *parser) | |
989 | { | |
990 | unsigned nesting_depth = 0; | |
991 | bool save_error = parser->error; | |
992 | ||
993 | while (true) | |
994 | { | |
995 | c_token *token; | |
996 | ||
997 | /* Peek at the next token. */ | |
998 | token = c_parser_peek_token (parser); | |
999 | ||
1000 | switch (token->type) | |
1001 | { | |
1002 | case CPP_EOF: | |
1003 | return; | |
1004 | ||
1005 | case CPP_PRAGMA_EOL: | |
1006 | if (parser->in_pragma) | |
1007 | return; | |
1008 | break; | |
1009 | ||
1010 | case CPP_SEMICOLON: | |
1011 | /* If the next token is a ';', we have reached the | |
1012 | end of the statement. */ | |
1013 | if (!nesting_depth) | |
1014 | { | |
1015 | /* Consume the ';'. */ | |
1016 | c_parser_consume_token (parser); | |
1017 | goto finished; | |
1018 | } | |
1019 | break; | |
1020 | ||
1021 | case CPP_CLOSE_BRACE: | |
1022 | /* If the next token is a non-nested '}', then we have | |
1023 | reached the end of the current block. */ | |
1024 | if (nesting_depth == 0 || --nesting_depth == 0) | |
1025 | { | |
1026 | c_parser_consume_token (parser); | |
1027 | goto finished; | |
1028 | } | |
1029 | break; | |
1030 | ||
1031 | case CPP_OPEN_BRACE: | |
1032 | /* If it the next token is a '{', then we are entering a new | |
1033 | block. Consume the entire block. */ | |
1034 | ++nesting_depth; | |
1035 | break; | |
1036 | ||
1037 | case CPP_PRAGMA: | |
1038 | /* If we see a pragma, consume the whole thing at once. We | |
1039 | have some safeguards against consuming pragmas willy-nilly. | |
1040 | Normally, we'd expect to be here with parser->error set, | |
1041 | which disables these safeguards. But it's possible to get | |
1042 | here for secondary error recovery, after parser->error has | |
1043 | been cleared. */ | |
1044 | c_parser_consume_pragma (parser); | |
1045 | c_parser_skip_to_pragma_eol (parser); | |
1046 | parser->error = save_error; | |
1047 | continue; | |
9e33de05 RS |
1048 | |
1049 | default: | |
1050 | break; | |
2a83cc52 RH |
1051 | } |
1052 | ||
1053 | c_parser_consume_token (parser); | |
1054 | } | |
1055 | ||
1056 | finished: | |
1057 | parser->error = false; | |
1058 | } | |
1059 | ||
d2e796ad MLI |
1060 | /* CPP's options (initialized by c-opts.c). */ |
1061 | extern cpp_options *cpp_opts; | |
1062 | ||
27bf414c JM |
1063 | /* Save the warning flags which are controlled by __extension__. */ |
1064 | ||
1065 | static inline int | |
1066 | disable_extension_diagnostics (void) | |
1067 | { | |
1068 | int ret = (pedantic | |
1069 | | (warn_pointer_arith << 1) | |
1070 | | (warn_traditional << 2) | |
d2e796ad | 1071 | | (flag_iso << 3) |
24b97832 | 1072 | | (warn_long_long << 4) |
b3ab9ea2 TT |
1073 | | (warn_cxx_compat << 5) |
1074 | | (warn_overlength_strings << 6)); | |
e3339d0f | 1075 | cpp_opts->cpp_pedantic = pedantic = 0; |
27bf414c | 1076 | warn_pointer_arith = 0; |
e3339d0f | 1077 | cpp_opts->cpp_warn_traditional = warn_traditional = 0; |
27bf414c | 1078 | flag_iso = 0; |
e3339d0f | 1079 | cpp_opts->cpp_warn_long_long = warn_long_long = 0; |
24b97832 | 1080 | warn_cxx_compat = 0; |
b3ab9ea2 | 1081 | warn_overlength_strings = 0; |
27bf414c JM |
1082 | return ret; |
1083 | } | |
1084 | ||
1085 | /* Restore the warning flags which are controlled by __extension__. | |
1086 | FLAGS is the return value from disable_extension_diagnostics. */ | |
1087 | ||
1088 | static inline void | |
1089 | restore_extension_diagnostics (int flags) | |
1090 | { | |
e3339d0f | 1091 | cpp_opts->cpp_pedantic = pedantic = flags & 1; |
27bf414c | 1092 | warn_pointer_arith = (flags >> 1) & 1; |
e3339d0f | 1093 | cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1; |
27bf414c | 1094 | flag_iso = (flags >> 3) & 1; |
e3339d0f | 1095 | cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1; |
24b97832 | 1096 | warn_cxx_compat = (flags >> 5) & 1; |
b3ab9ea2 | 1097 | warn_overlength_strings = (flags >> 6) & 1; |
27bf414c JM |
1098 | } |
1099 | ||
1100 | /* Possibly kinds of declarator to parse. */ | |
1101 | typedef enum c_dtr_syn { | |
1102 | /* A normal declarator with an identifier. */ | |
1103 | C_DTR_NORMAL, | |
1104 | /* An abstract declarator (maybe empty). */ | |
1105 | C_DTR_ABSTRACT, | |
1106 | /* A parameter declarator: may be either, but after a type name does | |
1107 | not redeclare a typedef name as an identifier if it can | |
1108 | alternatively be interpreted as a typedef name; see DR#009, | |
1109 | applied in C90 TC1, omitted from C99 and reapplied in C99 TC2 | |
1110 | following DR#249. For example, given a typedef T, "int T" and | |
1111 | "int *T" are valid parameter declarations redeclaring T, while | |
1112 | "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are | |
1113 | abstract declarators rather than involving redundant parentheses; | |
1114 | the same applies with attributes inside the parentheses before | |
1115 | "T". */ | |
1116 | C_DTR_PARM | |
1117 | } c_dtr_syn; | |
1118 | ||
20906c66 JJ |
1119 | /* The binary operation precedence levels, where 0 is a dummy lowest level |
1120 | used for the bottom of the stack. */ | |
1121 | enum c_parser_prec { | |
1122 | PREC_NONE, | |
1123 | PREC_LOGOR, | |
1124 | PREC_LOGAND, | |
1125 | PREC_BITOR, | |
1126 | PREC_BITXOR, | |
1127 | PREC_BITAND, | |
1128 | PREC_EQ, | |
1129 | PREC_REL, | |
1130 | PREC_SHIFT, | |
1131 | PREC_ADD, | |
1132 | PREC_MULT, | |
1133 | NUM_PRECS | |
1134 | }; | |
1135 | ||
27bf414c JM |
1136 | static void c_parser_external_declaration (c_parser *); |
1137 | static void c_parser_asm_definition (c_parser *); | |
32912286 | 1138 | static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, |
acf0174b | 1139 | bool, bool, tree *, vec<c_token>); |
32912286 JM |
1140 | static void c_parser_static_assert_declaration_no_semi (c_parser *); |
1141 | static void c_parser_static_assert_declaration (c_parser *); | |
27bf414c | 1142 | static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool, |
38b7bc7f | 1143 | bool, bool, bool, enum c_lookahead_kind); |
27bf414c JM |
1144 | static struct c_typespec c_parser_enum_specifier (c_parser *); |
1145 | static struct c_typespec c_parser_struct_or_union_specifier (c_parser *); | |
1146 | static tree c_parser_struct_declaration (c_parser *); | |
1147 | static struct c_typespec c_parser_typeof_specifier (c_parser *); | |
d19fa6b5 | 1148 | static tree c_parser_alignas_specifier (c_parser *); |
27bf414c JM |
1149 | static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn, |
1150 | bool *); | |
1151 | static struct c_declarator *c_parser_direct_declarator (c_parser *, bool, | |
1152 | c_dtr_syn, bool *); | |
1153 | static struct c_declarator *c_parser_direct_declarator_inner (c_parser *, | |
1154 | bool, | |
1155 | struct c_declarator *); | |
1156 | static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree); | |
a04a722b JM |
1157 | static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree, |
1158 | tree); | |
27bf414c JM |
1159 | static struct c_parm *c_parser_parameter_declaration (c_parser *, tree); |
1160 | static tree c_parser_simple_asm_expr (c_parser *); | |
1161 | static tree c_parser_attributes (c_parser *); | |
1162 | static struct c_type_name *c_parser_type_name (c_parser *); | |
1163 | static struct c_expr c_parser_initializer (c_parser *); | |
1164 | static struct c_expr c_parser_braced_init (c_parser *, tree, bool); | |
a1e3b3d9 LB |
1165 | static void c_parser_initelt (c_parser *, struct obstack *); |
1166 | static void c_parser_initval (c_parser *, struct c_expr *, | |
1167 | struct obstack *); | |
27bf414c JM |
1168 | static tree c_parser_compound_statement (c_parser *); |
1169 | static void c_parser_compound_statement_nostart (c_parser *); | |
1170 | static void c_parser_label (c_parser *); | |
1171 | static void c_parser_statement (c_parser *); | |
1172 | static void c_parser_statement_after_labels (c_parser *); | |
1173 | static void c_parser_if_statement (c_parser *); | |
1174 | static void c_parser_switch_statement (c_parser *); | |
d4af74d4 TB |
1175 | static void c_parser_while_statement (c_parser *, bool); |
1176 | static void c_parser_do_statement (c_parser *, bool); | |
8170608b | 1177 | static void c_parser_for_statement (c_parser *, bool); |
27bf414c | 1178 | static tree c_parser_asm_statement (c_parser *); |
eadd3d0d | 1179 | static tree c_parser_asm_operands (c_parser *); |
1c384bf1 | 1180 | static tree c_parser_asm_goto_operands (c_parser *); |
27bf414c | 1181 | static tree c_parser_asm_clobbers (c_parser *); |
acf0174b JJ |
1182 | static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *, |
1183 | tree = NULL_TREE); | |
27bf414c | 1184 | static struct c_expr c_parser_conditional_expression (c_parser *, |
acf0174b | 1185 | struct c_expr *, tree); |
20906c66 | 1186 | static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *, |
acf0174b | 1187 | tree); |
27bf414c JM |
1188 | static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *); |
1189 | static struct c_expr c_parser_unary_expression (c_parser *); | |
1190 | static struct c_expr c_parser_sizeof_expression (c_parser *); | |
1191 | static struct c_expr c_parser_alignof_expression (c_parser *); | |
1192 | static struct c_expr c_parser_postfix_expression (c_parser *); | |
1193 | static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *, | |
24b97832 ILT |
1194 | struct c_type_name *, |
1195 | location_t); | |
27bf414c | 1196 | static struct c_expr c_parser_postfix_expression_after_primary (c_parser *, |
c2255bc4 | 1197 | location_t loc, |
27bf414c | 1198 | struct c_expr); |
0a35513e AH |
1199 | static tree c_parser_transaction (c_parser *, enum rid); |
1200 | static struct c_expr c_parser_transaction_expression (c_parser *, enum rid); | |
1201 | static tree c_parser_transaction_cancel (c_parser *); | |
27bf414c | 1202 | static struct c_expr c_parser_expression (c_parser *); |
46bdb9cf | 1203 | static struct c_expr c_parser_expression_conv (c_parser *); |
9771b263 DN |
1204 | static vec<tree, va_gc> *c_parser_expr_list (c_parser *, bool, bool, |
1205 | vec<tree, va_gc> **, location_t *, | |
81e5eca8 | 1206 | tree *, vec<location_t> *); |
953ff289 DN |
1207 | static void c_parser_omp_construct (c_parser *); |
1208 | static void c_parser_omp_threadprivate (c_parser *); | |
1209 | static void c_parser_omp_barrier (c_parser *); | |
1210 | static void c_parser_omp_flush (c_parser *); | |
a68ab351 | 1211 | static void c_parser_omp_taskwait (c_parser *); |
20906c66 | 1212 | static void c_parser_omp_taskyield (c_parser *); |
acf0174b JJ |
1213 | static void c_parser_omp_cancel (c_parser *); |
1214 | static void c_parser_omp_cancellation_point (c_parser *); | |
27bf414c | 1215 | |
acf0174b JJ |
1216 | enum pragma_context { pragma_external, pragma_struct, pragma_param, |
1217 | pragma_stmt, pragma_compound }; | |
bc4071dd | 1218 | static bool c_parser_pragma (c_parser *, enum pragma_context); |
acf0174b JJ |
1219 | static bool c_parser_omp_target (c_parser *, enum pragma_context); |
1220 | static void c_parser_omp_end_declare_target (c_parser *); | |
1221 | static void c_parser_omp_declare (c_parser *, enum pragma_context); | |
bc4071dd | 1222 | |
27bf414c JM |
1223 | /* These Objective-C parser functions are only ever called when |
1224 | compiling Objective-C. */ | |
c165dca7 | 1225 | static void c_parser_objc_class_definition (c_parser *, tree); |
27bf414c JM |
1226 | static void c_parser_objc_class_instance_variables (c_parser *); |
1227 | static void c_parser_objc_class_declaration (c_parser *); | |
1228 | static void c_parser_objc_alias_declaration (c_parser *); | |
c165dca7 | 1229 | static void c_parser_objc_protocol_definition (c_parser *, tree); |
249a82c4 | 1230 | static bool c_parser_objc_method_type (c_parser *); |
27bf414c JM |
1231 | static void c_parser_objc_method_definition (c_parser *); |
1232 | static void c_parser_objc_methodprotolist (c_parser *); | |
1233 | static void c_parser_objc_methodproto (c_parser *); | |
a04a722b | 1234 | static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *); |
27bf414c JM |
1235 | static tree c_parser_objc_type_name (c_parser *); |
1236 | static tree c_parser_objc_protocol_refs (c_parser *); | |
437c2322 | 1237 | static void c_parser_objc_try_catch_finally_statement (c_parser *); |
27bf414c JM |
1238 | static void c_parser_objc_synchronized_statement (c_parser *); |
1239 | static tree c_parser_objc_selector (c_parser *); | |
1240 | static tree c_parser_objc_selector_arg (c_parser *); | |
1241 | static tree c_parser_objc_receiver (c_parser *); | |
1242 | static tree c_parser_objc_message_args (c_parser *); | |
1243 | static tree c_parser_objc_keywordexpr (c_parser *); | |
f614132b | 1244 | static void c_parser_objc_at_property_declaration (c_parser *); |
da57d1b9 NP |
1245 | static void c_parser_objc_at_synthesize_declaration (c_parser *); |
1246 | static void c_parser_objc_at_dynamic_declaration (c_parser *); | |
668ea4b1 | 1247 | static bool c_parser_objc_diagnose_bad_element_prefix |
c165dca7 | 1248 | (c_parser *, struct c_declspecs *); |
27bf414c | 1249 | |
c02065fc AH |
1250 | /* Cilk Plus supporting routines. */ |
1251 | static void c_parser_cilk_simd (c_parser *); | |
1252 | static bool c_parser_cilk_verify_simd (c_parser *, enum pragma_context); | |
36536d79 | 1253 | static tree c_parser_array_notation (location_t, c_parser *, tree, tree); |
41958c28 | 1254 | static tree c_parser_cilk_clause_vectorlength (c_parser *, tree, bool); |
36536d79 | 1255 | |
27bf414c JM |
1256 | /* Parse a translation unit (C90 6.7, C99 6.9). |
1257 | ||
1258 | translation-unit: | |
1259 | external-declarations | |
1260 | ||
1261 | external-declarations: | |
1262 | external-declaration | |
1263 | external-declarations external-declaration | |
1264 | ||
1265 | GNU extensions: | |
1266 | ||
1267 | translation-unit: | |
1268 | empty | |
1269 | */ | |
1270 | ||
1271 | static void | |
1272 | c_parser_translation_unit (c_parser *parser) | |
1273 | { | |
1274 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
1275 | { | |
c1771a20 | 1276 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1277 | "ISO C forbids an empty translation unit"); |
27bf414c JM |
1278 | } |
1279 | else | |
1280 | { | |
1281 | void *obstack_position = obstack_alloc (&parser_obstack, 0); | |
6ec637a4 | 1282 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
1283 | do |
1284 | { | |
1285 | ggc_collect (); | |
1286 | c_parser_external_declaration (parser); | |
1287 | obstack_free (&parser_obstack, obstack_position); | |
1288 | } | |
1289 | while (c_parser_next_token_is_not (parser, CPP_EOF)); | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* Parse an external declaration (C90 6.7, C99 6.9). | |
1294 | ||
1295 | external-declaration: | |
1296 | function-definition | |
1297 | declaration | |
1298 | ||
1299 | GNU extensions: | |
1300 | ||
1301 | external-declaration: | |
1302 | asm-definition | |
1303 | ; | |
1304 | __extension__ external-declaration | |
1305 | ||
1306 | Objective-C: | |
1307 | ||
1308 | external-declaration: | |
1309 | objc-class-definition | |
1310 | objc-class-declaration | |
1311 | objc-alias-declaration | |
1312 | objc-protocol-definition | |
1313 | objc-method-definition | |
1314 | @end | |
1315 | */ | |
1316 | ||
1317 | static void | |
1318 | c_parser_external_declaration (c_parser *parser) | |
1319 | { | |
1320 | int ext; | |
1321 | switch (c_parser_peek_token (parser)->type) | |
1322 | { | |
1323 | case CPP_KEYWORD: | |
1324 | switch (c_parser_peek_token (parser)->keyword) | |
1325 | { | |
1326 | case RID_EXTENSION: | |
1327 | ext = disable_extension_diagnostics (); | |
1328 | c_parser_consume_token (parser); | |
1329 | c_parser_external_declaration (parser); | |
1330 | restore_extension_diagnostics (ext); | |
1331 | break; | |
1332 | case RID_ASM: | |
1333 | c_parser_asm_definition (parser); | |
1334 | break; | |
1335 | case RID_AT_INTERFACE: | |
1336 | case RID_AT_IMPLEMENTATION: | |
1337 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1338 | c_parser_objc_class_definition (parser, NULL_TREE); |
27bf414c | 1339 | break; |
49b91f05 | 1340 | case RID_AT_CLASS: |
27bf414c JM |
1341 | gcc_assert (c_dialect_objc ()); |
1342 | c_parser_objc_class_declaration (parser); | |
1343 | break; | |
1344 | case RID_AT_ALIAS: | |
1345 | gcc_assert (c_dialect_objc ()); | |
1346 | c_parser_objc_alias_declaration (parser); | |
1347 | break; | |
1348 | case RID_AT_PROTOCOL: | |
1349 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1350 | c_parser_objc_protocol_definition (parser, NULL_TREE); |
27bf414c | 1351 | break; |
668ea4b1 IS |
1352 | case RID_AT_PROPERTY: |
1353 | gcc_assert (c_dialect_objc ()); | |
f614132b | 1354 | c_parser_objc_at_property_declaration (parser); |
668ea4b1 | 1355 | break; |
da57d1b9 NP |
1356 | case RID_AT_SYNTHESIZE: |
1357 | gcc_assert (c_dialect_objc ()); | |
1358 | c_parser_objc_at_synthesize_declaration (parser); | |
1359 | break; | |
1360 | case RID_AT_DYNAMIC: | |
1361 | gcc_assert (c_dialect_objc ()); | |
1362 | c_parser_objc_at_dynamic_declaration (parser); | |
1363 | break; | |
27bf414c JM |
1364 | case RID_AT_END: |
1365 | gcc_assert (c_dialect_objc ()); | |
1366 | c_parser_consume_token (parser); | |
1367 | objc_finish_implementation (); | |
1368 | break; | |
1369 | default: | |
1370 | goto decl_or_fndef; | |
1371 | } | |
1372 | break; | |
1373 | case CPP_SEMICOLON: | |
c1771a20 | 1374 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1375 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
1376 | c_parser_consume_token (parser); |
1377 | break; | |
bc4071dd | 1378 | case CPP_PRAGMA: |
6ec637a4 | 1379 | mark_valid_location_for_stdc_pragma (true); |
bc4071dd | 1380 | c_parser_pragma (parser, pragma_external); |
6ec637a4 | 1381 | mark_valid_location_for_stdc_pragma (false); |
bc4071dd | 1382 | break; |
27bf414c JM |
1383 | case CPP_PLUS: |
1384 | case CPP_MINUS: | |
1385 | if (c_dialect_objc ()) | |
1386 | { | |
1387 | c_parser_objc_method_definition (parser); | |
1388 | break; | |
1389 | } | |
1390 | /* Else fall through, and yield a syntax error trying to parse | |
1391 | as a declaration or function definition. */ | |
1392 | default: | |
1393 | decl_or_fndef: | |
c165dca7 IS |
1394 | /* A declaration or a function definition (or, in Objective-C, |
1395 | an @interface or @protocol with prefix attributes). We can | |
1396 | only tell which after parsing the declaration specifiers, if | |
1397 | any, and the first declarator. */ | |
acf0174b JJ |
1398 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, |
1399 | NULL, vNULL); | |
27bf414c JM |
1400 | break; |
1401 | } | |
1402 | } | |
1403 | ||
acf0174b JJ |
1404 | static void c_finish_omp_declare_simd (c_parser *, tree, tree, vec<c_token>); |
1405 | ||
27bf414c JM |
1406 | /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99 |
1407 | 6.7, 6.9.1). If FNDEF_OK is true, a function definition is | |
1408 | accepted; otherwise (old-style parameter declarations) only other | |
32912286 JM |
1409 | declarations are accepted. If STATIC_ASSERT_OK is true, a static |
1410 | assertion is accepted; otherwise (old-style parameter declarations) | |
1411 | it is not. If NESTED is true, we are inside a function or parsing | |
1412 | old-style parameter declarations; any functions encountered are | |
1413 | nested functions and declaration specifiers are required; otherwise | |
1414 | we are at top level and functions are normal functions and | |
1415 | declaration specifiers may be optional. If EMPTY_OK is true, empty | |
1416 | declarations are OK (subject to all other constraints); otherwise | |
1417 | (old-style parameter declarations) they are diagnosed. If | |
1418 | START_ATTR_OK is true, the declaration specifiers may start with | |
1419 | attributes; otherwise they may not. | |
f05b9d93 NP |
1420 | OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed |
1421 | declaration when parsing an Objective-C foreach statement. | |
27bf414c JM |
1422 | |
1423 | declaration: | |
1424 | declaration-specifiers init-declarator-list[opt] ; | |
32912286 | 1425 | static_assert-declaration |
27bf414c JM |
1426 | |
1427 | function-definition: | |
1428 | declaration-specifiers[opt] declarator declaration-list[opt] | |
1429 | compound-statement | |
1430 | ||
1431 | declaration-list: | |
1432 | declaration | |
1433 | declaration-list declaration | |
1434 | ||
1435 | init-declarator-list: | |
1436 | init-declarator | |
1437 | init-declarator-list , init-declarator | |
1438 | ||
1439 | init-declarator: | |
1440 | declarator simple-asm-expr[opt] attributes[opt] | |
1441 | declarator simple-asm-expr[opt] attributes[opt] = initializer | |
1442 | ||
1443 | GNU extensions: | |
1444 | ||
1445 | nested-function-definition: | |
1446 | declaration-specifiers declarator declaration-list[opt] | |
1447 | compound-statement | |
1448 | ||
c165dca7 IS |
1449 | Objective-C: |
1450 | attributes objc-class-definition | |
1451 | attributes objc-category-definition | |
1452 | attributes objc-protocol-definition | |
1453 | ||
27bf414c JM |
1454 | The simple-asm-expr and attributes are GNU extensions. |
1455 | ||
1456 | This function does not handle __extension__; that is handled in its | |
1457 | callers. ??? Following the old parser, __extension__ may start | |
1458 | external declarations, declarations in functions and declarations | |
1459 | at the start of "for" loops, but not old-style parameter | |
1460 | declarations. | |
1461 | ||
1462 | C99 requires declaration specifiers in a function definition; the | |
1463 | absence is diagnosed through the diagnosis of implicit int. In GNU | |
1464 | C we also allow but diagnose declarations without declaration | |
1465 | specifiers, but only at top level (elsewhere they conflict with | |
953ff289 | 1466 | other syntax). |
b8698a0f | 1467 | |
f05b9d93 NP |
1468 | In Objective-C, declarations of the looping variable in a foreach |
1469 | statement are exceptionally terminated by 'in' (for example, 'for | |
1470 | (NSObject *object in array) { ... }'). | |
1471 | ||
953ff289 | 1472 | OpenMP: |
b8698a0f | 1473 | |
953ff289 DN |
1474 | declaration: |
1475 | threadprivate-directive */ | |
27bf414c JM |
1476 | |
1477 | static void | |
32912286 JM |
1478 | c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, |
1479 | bool static_assert_ok, bool empty_ok, | |
f05b9d93 | 1480 | bool nested, bool start_attr_ok, |
acf0174b JJ |
1481 | tree *objc_foreach_object_declaration, |
1482 | vec<c_token> omp_declare_simd_clauses) | |
27bf414c JM |
1483 | { |
1484 | struct c_declspecs *specs; | |
1485 | tree prefix_attrs; | |
1486 | tree all_prefix_attrs; | |
1487 | bool diagnosed_no_specs = false; | |
c7412148 | 1488 | location_t here = c_parser_peek_token (parser)->location; |
bc4071dd | 1489 | |
32912286 JM |
1490 | if (static_assert_ok |
1491 | && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) | |
1492 | { | |
1493 | c_parser_static_assert_declaration (parser); | |
1494 | return; | |
1495 | } | |
27bf414c | 1496 | specs = build_null_declspecs (); |
2f413185 PB |
1497 | |
1498 | /* Try to detect an unknown type name when we have "A B" or "A *B". */ | |
1499 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
1500 | && c_parser_peek_token (parser)->id_kind == C_ID_ID | |
1501 | && (c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
1502 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
1503 | && (!nested || !lookup_name (c_parser_peek_token (parser)->value))) | |
1504 | { | |
1505 | error_at (here, "unknown type name %qE", | |
1506 | c_parser_peek_token (parser)->value); | |
1507 | ||
1508 | /* Parse declspecs normally to get a correct pointer type, but avoid | |
a5812bdc PB |
1509 | a further "fails to be a type name" error. Refuse nested functions |
1510 | since it is not how the user likely wants us to recover. */ | |
2f413185 PB |
1511 | c_parser_peek_token (parser)->type = CPP_KEYWORD; |
1512 | c_parser_peek_token (parser)->keyword = RID_VOID; | |
1513 | c_parser_peek_token (parser)->value = error_mark_node; | |
a5812bdc | 1514 | fndef_ok = !nested; |
2f413185 PB |
1515 | } |
1516 | ||
568a31f2 | 1517 | c_parser_declspecs (parser, specs, true, true, start_attr_ok, |
38b7bc7f | 1518 | true, true, cla_nonabstract_decl); |
27bf414c JM |
1519 | if (parser->error) |
1520 | { | |
1521 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1522 | return; | |
1523 | } | |
1524 | if (nested && !specs->declspecs_seen_p) | |
1525 | { | |
1526 | c_parser_error (parser, "expected declaration specifiers"); | |
1527 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1528 | return; | |
1529 | } | |
1530 | finish_declspecs (specs); | |
38b7bc7f | 1531 | bool auto_type_p = specs->typespec_word == cts_auto_type; |
27bf414c JM |
1532 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
1533 | { | |
38b7bc7f JM |
1534 | if (auto_type_p) |
1535 | error_at (here, "%<__auto_type%> in empty declaration"); | |
1536 | else if (empty_ok) | |
27bf414c JM |
1537 | shadow_tag (specs); |
1538 | else | |
1539 | { | |
1540 | shadow_tag_warned (specs, 1); | |
509c9d60 | 1541 | pedwarn (here, 0, "empty declaration"); |
27bf414c JM |
1542 | } |
1543 | c_parser_consume_token (parser); | |
1544 | return; | |
1545 | } | |
f725e721 PB |
1546 | |
1547 | /* Provide better error recovery. Note that a type name here is usually | |
1548 | better diagnosed as a redeclaration. */ | |
1549 | if (empty_ok | |
1550 | && specs->typespec_kind == ctsk_tagdef | |
1551 | && c_parser_next_token_starts_declspecs (parser) | |
1552 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
1553 | { | |
1554 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
1555 | parser->error = false; | |
1556 | shadow_tag_warned (specs, 1); | |
1557 | return; | |
1558 | } | |
38b7bc7f | 1559 | else if (c_dialect_objc () && !auto_type_p) |
c165dca7 | 1560 | { |
f7e71da5 IS |
1561 | /* Prefix attributes are an error on method decls. */ |
1562 | switch (c_parser_peek_token (parser)->type) | |
1563 | { | |
1564 | case CPP_PLUS: | |
1565 | case CPP_MINUS: | |
1566 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1567 | return; | |
1568 | if (specs->attrs) | |
1569 | { | |
1570 | warning_at (c_parser_peek_token (parser)->location, | |
1571 | OPT_Wattributes, | |
1572 | "prefix attributes are ignored for methods"); | |
1573 | specs->attrs = NULL_TREE; | |
1574 | } | |
1575 | if (fndef_ok) | |
1576 | c_parser_objc_method_definition (parser); | |
1577 | else | |
1578 | c_parser_objc_methodproto (parser); | |
1579 | return; | |
1580 | break; | |
1581 | default: | |
1582 | break; | |
1583 | } | |
c165dca7 IS |
1584 | /* This is where we parse 'attributes @interface ...', |
1585 | 'attributes @implementation ...', 'attributes @protocol ...' | |
1586 | (where attributes could be, for example, __attribute__ | |
1587 | ((deprecated)). | |
1588 | */ | |
1589 | switch (c_parser_peek_token (parser)->keyword) | |
1590 | { | |
1591 | case RID_AT_INTERFACE: | |
1592 | { | |
1593 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1594 | return; | |
1595 | c_parser_objc_class_definition (parser, specs->attrs); | |
1596 | return; | |
1597 | } | |
1598 | break; | |
1599 | case RID_AT_IMPLEMENTATION: | |
1600 | { | |
1601 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1602 | return; | |
1603 | if (specs->attrs) | |
1604 | { | |
1605 | warning_at (c_parser_peek_token (parser)->location, | |
1606 | OPT_Wattributes, | |
1607 | "prefix attributes are ignored for implementations"); | |
1608 | specs->attrs = NULL_TREE; | |
1609 | } | |
1610 | c_parser_objc_class_definition (parser, NULL_TREE); | |
1611 | return; | |
1612 | } | |
1613 | break; | |
1614 | case RID_AT_PROTOCOL: | |
1615 | { | |
1616 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1617 | return; | |
1618 | c_parser_objc_protocol_definition (parser, specs->attrs); | |
1619 | return; | |
1620 | } | |
1621 | break; | |
668ea4b1 IS |
1622 | case RID_AT_ALIAS: |
1623 | case RID_AT_CLASS: | |
1624 | case RID_AT_END: | |
1625 | case RID_AT_PROPERTY: | |
1626 | if (specs->attrs) | |
1627 | { | |
96bbfbac | 1628 | c_parser_error (parser, "unexpected attribute"); |
668ea4b1 IS |
1629 | specs->attrs = NULL; |
1630 | } | |
1631 | break; | |
c165dca7 IS |
1632 | default: |
1633 | break; | |
1634 | } | |
1635 | } | |
1636 | ||
27bf414c JM |
1637 | pending_xref_error (); |
1638 | prefix_attrs = specs->attrs; | |
1639 | all_prefix_attrs = prefix_attrs; | |
1640 | specs->attrs = NULL_TREE; | |
1641 | while (true) | |
1642 | { | |
1643 | struct c_declarator *declarator; | |
1644 | bool dummy = false; | |
575bfb00 | 1645 | timevar_id_t tv; |
27bf414c JM |
1646 | tree fnbody; |
1647 | /* Declaring either one or more declarators (in which case we | |
1648 | should diagnose if there were no declaration specifiers) or a | |
1649 | function definition (in which case the diagnostic for | |
1650 | implicit int suffices). */ | |
9e5b2115 PB |
1651 | declarator = c_parser_declarator (parser, |
1652 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
1653 | C_DTR_NORMAL, &dummy); |
1654 | if (declarator == NULL) | |
1655 | { | |
41958c28 BI |
1656 | if (omp_declare_simd_clauses.exists () |
1657 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1658 | c_finish_omp_declare_simd (parser, NULL_TREE, NULL_TREE, |
1659 | omp_declare_simd_clauses); | |
27bf414c JM |
1660 | c_parser_skip_to_end_of_block_or_statement (parser); |
1661 | return; | |
1662 | } | |
38b7bc7f JM |
1663 | if (auto_type_p && declarator->kind != cdk_id) |
1664 | { | |
1665 | error_at (here, | |
1666 | "%<__auto_type%> requires a plain identifier" | |
1667 | " as declarator"); | |
1668 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1669 | return; | |
1670 | } | |
27bf414c JM |
1671 | if (c_parser_next_token_is (parser, CPP_EQ) |
1672 | || c_parser_next_token_is (parser, CPP_COMMA) | |
1673 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
1674 | || c_parser_next_token_is_keyword (parser, RID_ASM) | |
f05b9d93 NP |
1675 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE) |
1676 | || c_parser_next_token_is_keyword (parser, RID_IN)) | |
27bf414c JM |
1677 | { |
1678 | tree asm_name = NULL_TREE; | |
1679 | tree postfix_attrs = NULL_TREE; | |
1680 | if (!diagnosed_no_specs && !specs->declspecs_seen_p) | |
1681 | { | |
1682 | diagnosed_no_specs = true; | |
509c9d60 | 1683 | pedwarn (here, 0, "data definition has no type or storage class"); |
27bf414c JM |
1684 | } |
1685 | /* Having seen a data definition, there cannot now be a | |
1686 | function definition. */ | |
1687 | fndef_ok = false; | |
1688 | if (c_parser_next_token_is_keyword (parser, RID_ASM)) | |
1689 | asm_name = c_parser_simple_asm_expr (parser); | |
1690 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1691 | postfix_attrs = c_parser_attributes (parser); | |
1692 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
1693 | { | |
1694 | tree d; | |
1695 | struct c_expr init; | |
c2255bc4 | 1696 | location_t init_loc; |
27bf414c | 1697 | c_parser_consume_token (parser); |
38b7bc7f JM |
1698 | if (auto_type_p) |
1699 | { | |
1700 | start_init (NULL_TREE, asm_name, global_bindings_p ()); | |
1701 | init_loc = c_parser_peek_token (parser)->location; | |
1702 | init = c_parser_expr_no_commas (parser, NULL); | |
1703 | if (TREE_CODE (init.value) == COMPONENT_REF | |
1704 | && DECL_C_BIT_FIELD (TREE_OPERAND (init.value, 1))) | |
1705 | error_at (here, | |
1706 | "%<__auto_type%> used with a bit-field" | |
1707 | " initializer"); | |
1708 | init = convert_lvalue_to_rvalue (init_loc, init, true, true); | |
1709 | tree init_type = TREE_TYPE (init.value); | |
1710 | /* As with typeof, remove _Atomic and const | |
1711 | qualifiers from atomic types. */ | |
1712 | if (init_type != error_mark_node && TYPE_ATOMIC (init_type)) | |
1713 | init_type | |
1714 | = c_build_qualified_type (init_type, | |
1715 | (TYPE_QUALS (init_type) | |
1716 | & ~(TYPE_QUAL_ATOMIC | |
1717 | | TYPE_QUAL_CONST))); | |
1718 | bool vm_type = variably_modified_type_p (init_type, | |
1719 | NULL_TREE); | |
1720 | if (vm_type) | |
1721 | init.value = c_save_expr (init.value); | |
1722 | finish_init (); | |
1723 | specs->typespec_kind = ctsk_typeof; | |
1724 | specs->locations[cdw_typedef] = init_loc; | |
1725 | specs->typedef_p = true; | |
1726 | specs->type = init_type; | |
1727 | if (vm_type) | |
1728 | { | |
1729 | bool maybe_const = true; | |
1730 | tree type_expr = c_fully_fold (init.value, false, | |
1731 | &maybe_const); | |
1732 | specs->expr_const_operands &= maybe_const; | |
1733 | if (specs->expr) | |
1734 | specs->expr = build2 (COMPOUND_EXPR, | |
1735 | TREE_TYPE (type_expr), | |
1736 | specs->expr, type_expr); | |
1737 | else | |
1738 | specs->expr = type_expr; | |
1739 | } | |
1740 | d = start_decl (declarator, specs, true, | |
1741 | chainon (postfix_attrs, all_prefix_attrs)); | |
1742 | if (!d) | |
1743 | d = error_mark_node; | |
41958c28 BI |
1744 | if (omp_declare_simd_clauses.exists () |
1745 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
38b7bc7f JM |
1746 | c_finish_omp_declare_simd (parser, d, NULL_TREE, |
1747 | omp_declare_simd_clauses); | |
1748 | } | |
1749 | else | |
1750 | { | |
1751 | /* The declaration of the variable is in effect while | |
1752 | its initializer is parsed. */ | |
1753 | d = start_decl (declarator, specs, true, | |
1754 | chainon (postfix_attrs, all_prefix_attrs)); | |
1755 | if (!d) | |
1756 | d = error_mark_node; | |
41958c28 BI |
1757 | if (omp_declare_simd_clauses.exists () |
1758 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
38b7bc7f JM |
1759 | c_finish_omp_declare_simd (parser, d, NULL_TREE, |
1760 | omp_declare_simd_clauses); | |
1761 | start_init (d, asm_name, global_bindings_p ()); | |
1762 | init_loc = c_parser_peek_token (parser)->location; | |
1763 | init = c_parser_initializer (parser); | |
1764 | finish_init (); | |
1765 | } | |
27bf414c JM |
1766 | if (d != error_mark_node) |
1767 | { | |
1768 | maybe_warn_string_init (TREE_TYPE (d), init); | |
c2255bc4 AH |
1769 | finish_decl (d, init_loc, init.value, |
1770 | init.original_type, asm_name); | |
27bf414c JM |
1771 | } |
1772 | } | |
1773 | else | |
1774 | { | |
38b7bc7f JM |
1775 | if (auto_type_p) |
1776 | { | |
1777 | error_at (here, | |
1778 | "%<__auto_type%> requires an initialized " | |
1779 | "data declaration"); | |
1780 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1781 | return; | |
1782 | } | |
27bf414c JM |
1783 | tree d = start_decl (declarator, specs, false, |
1784 | chainon (postfix_attrs, | |
1785 | all_prefix_attrs)); | |
41958c28 BI |
1786 | if (omp_declare_simd_clauses.exists () |
1787 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1788 | { |
1789 | tree parms = NULL_TREE; | |
1790 | if (d && TREE_CODE (d) == FUNCTION_DECL) | |
1791 | { | |
1792 | struct c_declarator *ce = declarator; | |
1793 | while (ce != NULL) | |
1794 | if (ce->kind == cdk_function) | |
1795 | { | |
1796 | parms = ce->u.arg_info->parms; | |
1797 | break; | |
1798 | } | |
1799 | else | |
1800 | ce = ce->declarator; | |
1801 | } | |
1802 | if (parms) | |
1803 | temp_store_parm_decls (d, parms); | |
1804 | c_finish_omp_declare_simd (parser, d, parms, | |
1805 | omp_declare_simd_clauses); | |
1806 | if (parms) | |
1807 | temp_pop_parm_decls (); | |
1808 | } | |
27bf414c | 1809 | if (d) |
c2255bc4 | 1810 | finish_decl (d, UNKNOWN_LOCATION, NULL_TREE, |
f05b9d93 NP |
1811 | NULL_TREE, asm_name); |
1812 | ||
1813 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
1814 | { | |
1815 | if (d) | |
1816 | *objc_foreach_object_declaration = d; | |
1817 | else | |
1818 | *objc_foreach_object_declaration = error_mark_node; | |
1819 | } | |
27bf414c JM |
1820 | } |
1821 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
1822 | { | |
38b7bc7f JM |
1823 | if (auto_type_p) |
1824 | { | |
1825 | error_at (here, | |
1826 | "%<__auto_type%> may only be used with" | |
1827 | " a single declarator"); | |
1828 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1829 | return; | |
1830 | } | |
27bf414c JM |
1831 | c_parser_consume_token (parser); |
1832 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1833 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
1834 | prefix_attrs); | |
1835 | else | |
1836 | all_prefix_attrs = prefix_attrs; | |
1837 | continue; | |
1838 | } | |
1839 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1840 | { | |
1841 | c_parser_consume_token (parser); | |
1842 | return; | |
1843 | } | |
f05b9d93 NP |
1844 | else if (c_parser_next_token_is_keyword (parser, RID_IN)) |
1845 | { | |
1846 | /* This can only happen in Objective-C: we found the | |
1847 | 'in' that terminates the declaration inside an | |
1848 | Objective-C foreach statement. Do not consume the | |
1849 | token, so that the caller can use it to determine | |
1850 | that this indeed is a foreach context. */ | |
1851 | return; | |
1852 | } | |
27bf414c JM |
1853 | else |
1854 | { | |
1855 | c_parser_error (parser, "expected %<,%> or %<;%>"); | |
1856 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1857 | return; | |
1858 | } | |
1859 | } | |
38b7bc7f JM |
1860 | else if (auto_type_p) |
1861 | { | |
1862 | error_at (here, | |
1863 | "%<__auto_type%> requires an initialized data declaration"); | |
1864 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1865 | return; | |
1866 | } | |
27bf414c JM |
1867 | else if (!fndef_ok) |
1868 | { | |
1869 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, " | |
1870 | "%<asm%> or %<__attribute__%>"); | |
1871 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1872 | return; | |
1873 | } | |
1874 | /* Function definition (nested or otherwise). */ | |
1875 | if (nested) | |
1876 | { | |
c1771a20 | 1877 | pedwarn (here, OPT_Wpedantic, "ISO C forbids nested functions"); |
d2784db4 | 1878 | c_push_function_context (); |
27bf414c JM |
1879 | } |
1880 | if (!start_function (specs, declarator, all_prefix_attrs)) | |
1881 | { | |
1882 | /* This can appear in many cases looking nothing like a | |
1883 | function definition, so we don't give a more specific | |
1884 | error suggesting there was one. */ | |
1885 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> " | |
1886 | "or %<__attribute__%>"); | |
1887 | if (nested) | |
d2784db4 | 1888 | c_pop_function_context (); |
27bf414c JM |
1889 | break; |
1890 | } | |
575bfb00 LC |
1891 | |
1892 | if (DECL_DECLARED_INLINE_P (current_function_decl)) | |
1893 | tv = TV_PARSE_INLINE; | |
1894 | else | |
1895 | tv = TV_PARSE_FUNC; | |
1896 | timevar_push (tv); | |
1897 | ||
27bf414c JM |
1898 | /* Parse old-style parameter declarations. ??? Attributes are |
1899 | not allowed to start declaration specifiers here because of a | |
1900 | syntax conflict between a function declaration with attribute | |
1901 | suffix and a function definition with an attribute prefix on | |
1902 | first old-style parameter declaration. Following the old | |
1903 | parser, they are not accepted on subsequent old-style | |
1904 | parameter declarations either. However, there is no | |
1905 | ambiguity after the first declaration, nor indeed on the | |
1906 | first as long as we don't allow postfix attributes after a | |
1907 | declarator with a nonempty identifier list in a definition; | |
1908 | and postfix attributes have never been accepted here in | |
1909 | function definitions either. */ | |
1910 | while (c_parser_next_token_is_not (parser, CPP_EOF) | |
1911 | && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE)) | |
32912286 | 1912 | c_parser_declaration_or_fndef (parser, false, false, false, |
acf0174b | 1913 | true, false, NULL, vNULL); |
27bf414c | 1914 | store_parm_decls (); |
41958c28 BI |
1915 | if (omp_declare_simd_clauses.exists () |
1916 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1917 | c_finish_omp_declare_simd (parser, current_function_decl, NULL_TREE, |
1918 | omp_declare_simd_clauses); | |
1751ecd6 AH |
1919 | DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus |
1920 | = c_parser_peek_token (parser)->location; | |
27bf414c | 1921 | fnbody = c_parser_compound_statement (parser); |
b72271b9 | 1922 | if (flag_cilkplus && contains_array_notation_expr (fnbody)) |
25c22937 | 1923 | fnbody = expand_array_notation_exprs (fnbody); |
27bf414c JM |
1924 | if (nested) |
1925 | { | |
1926 | tree decl = current_function_decl; | |
9f62cb92 JJ |
1927 | /* Mark nested functions as needing static-chain initially. |
1928 | lower_nested_functions will recompute it but the | |
1929 | DECL_STATIC_CHAIN flag is also used before that happens, | |
1930 | by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */ | |
1931 | DECL_STATIC_CHAIN (decl) = 1; | |
27bf414c JM |
1932 | add_stmt (fnbody); |
1933 | finish_function (); | |
d2784db4 | 1934 | c_pop_function_context (); |
c2255bc4 | 1935 | add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl)); |
27bf414c JM |
1936 | } |
1937 | else | |
1938 | { | |
1939 | add_stmt (fnbody); | |
1940 | finish_function (); | |
1941 | } | |
575bfb00 LC |
1942 | |
1943 | timevar_pop (tv); | |
27bf414c JM |
1944 | break; |
1945 | } | |
1946 | } | |
1947 | ||
1948 | /* Parse an asm-definition (asm() outside a function body). This is a | |
1949 | GNU extension. | |
1950 | ||
1951 | asm-definition: | |
1952 | simple-asm-expr ; | |
1953 | */ | |
1954 | ||
1955 | static void | |
1956 | c_parser_asm_definition (c_parser *parser) | |
1957 | { | |
1958 | tree asm_str = c_parser_simple_asm_expr (parser); | |
27bf414c | 1959 | if (asm_str) |
65d630d4 | 1960 | add_asm_node (asm_str); |
27bf414c JM |
1961 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
1962 | } | |
1963 | ||
48b0b196 | 1964 | /* Parse a static assertion (C11 6.7.10). |
32912286 JM |
1965 | |
1966 | static_assert-declaration: | |
1967 | static_assert-declaration-no-semi ; | |
1968 | */ | |
1969 | ||
1970 | static void | |
1971 | c_parser_static_assert_declaration (c_parser *parser) | |
1972 | { | |
1973 | c_parser_static_assert_declaration_no_semi (parser); | |
1974 | if (parser->error | |
1975 | || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
1976 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1977 | } | |
1978 | ||
48b0b196 | 1979 | /* Parse a static assertion (C11 6.7.10), without the trailing |
32912286 JM |
1980 | semicolon. |
1981 | ||
1982 | static_assert-declaration-no-semi: | |
1983 | _Static_assert ( constant-expression , string-literal ) | |
1984 | */ | |
1985 | ||
1986 | static void | |
1987 | c_parser_static_assert_declaration_no_semi (c_parser *parser) | |
1988 | { | |
1989 | location_t assert_loc, value_loc; | |
1990 | tree value; | |
1991 | tree string; | |
1992 | ||
1993 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)); | |
1994 | assert_loc = c_parser_peek_token (parser)->location; | |
48b0b196 | 1995 | if (!flag_isoc11) |
32912286 JM |
1996 | { |
1997 | if (flag_isoc99) | |
c1771a20 | 1998 | pedwarn (assert_loc, OPT_Wpedantic, |
32912286 JM |
1999 | "ISO C99 does not support %<_Static_assert%>"); |
2000 | else | |
c1771a20 | 2001 | pedwarn (assert_loc, OPT_Wpedantic, |
32912286 JM |
2002 | "ISO C90 does not support %<_Static_assert%>"); |
2003 | } | |
2004 | c_parser_consume_token (parser); | |
2005 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2006 | return; | |
2007 | value_loc = c_parser_peek_token (parser)->location; | |
2008 | value = c_parser_expr_no_commas (parser, NULL).value; | |
2009 | parser->lex_untranslated_string = true; | |
2010 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
2011 | { | |
2012 | parser->lex_untranslated_string = false; | |
2013 | return; | |
2014 | } | |
2015 | switch (c_parser_peek_token (parser)->type) | |
2016 | { | |
2017 | case CPP_STRING: | |
2018 | case CPP_STRING16: | |
2019 | case CPP_STRING32: | |
2020 | case CPP_WSTRING: | |
2021 | case CPP_UTF8STRING: | |
2022 | string = c_parser_peek_token (parser)->value; | |
2023 | c_parser_consume_token (parser); | |
2024 | parser->lex_untranslated_string = false; | |
2025 | break; | |
2026 | default: | |
2027 | c_parser_error (parser, "expected string literal"); | |
2028 | parser->lex_untranslated_string = false; | |
2029 | return; | |
2030 | } | |
2031 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2032 | ||
2033 | if (!INTEGRAL_TYPE_P (TREE_TYPE (value))) | |
2034 | { | |
2035 | error_at (value_loc, "expression in static assertion is not an integer"); | |
2036 | return; | |
2037 | } | |
2038 | if (TREE_CODE (value) != INTEGER_CST) | |
2039 | { | |
2040 | value = c_fully_fold (value, false, NULL); | |
2041 | if (TREE_CODE (value) == INTEGER_CST) | |
c1771a20 | 2042 | pedwarn (value_loc, OPT_Wpedantic, "expression in static assertion " |
32912286 JM |
2043 | "is not an integer constant expression"); |
2044 | } | |
2045 | if (TREE_CODE (value) != INTEGER_CST) | |
2046 | { | |
2047 | error_at (value_loc, "expression in static assertion is not constant"); | |
2048 | return; | |
2049 | } | |
2050 | constant_expression_warning (value); | |
2051 | if (integer_zerop (value)) | |
2052 | error_at (assert_loc, "static assertion failed: %E", string); | |
2053 | } | |
2054 | ||
27bf414c JM |
2055 | /* Parse some declaration specifiers (possibly none) (C90 6.5, C99 |
2056 | 6.7), adding them to SPECS (which may already include some). | |
2057 | Storage class specifiers are accepted iff SCSPEC_OK; type | |
568a31f2 MP |
2058 | specifiers are accepted iff TYPESPEC_OK; alignment specifiers are |
2059 | accepted iff ALIGNSPEC_OK; attributes are accepted at the start | |
38b7bc7f | 2060 | iff START_ATTR_OK; __auto_type is accepted iff AUTO_TYPE_OK. |
27bf414c JM |
2061 | |
2062 | declaration-specifiers: | |
2063 | storage-class-specifier declaration-specifiers[opt] | |
2064 | type-specifier declaration-specifiers[opt] | |
2065 | type-qualifier declaration-specifiers[opt] | |
2066 | function-specifier declaration-specifiers[opt] | |
d19fa6b5 | 2067 | alignment-specifier declaration-specifiers[opt] |
27bf414c JM |
2068 | |
2069 | Function specifiers (inline) are from C99, and are currently | |
d19fa6b5 | 2070 | handled as storage class specifiers, as is __thread. Alignment |
48b0b196 | 2071 | specifiers are from C11. |
27bf414c JM |
2072 | |
2073 | C90 6.5.1, C99 6.7.1: | |
2074 | storage-class-specifier: | |
2075 | typedef | |
2076 | extern | |
2077 | static | |
2078 | auto | |
2079 | register | |
582d9b50 JM |
2080 | _Thread_local |
2081 | ||
2082 | (_Thread_local is new in C11.) | |
27bf414c JM |
2083 | |
2084 | C99 6.7.4: | |
2085 | function-specifier: | |
2086 | inline | |
c4b3a0a0 JM |
2087 | _Noreturn |
2088 | ||
48b0b196 | 2089 | (_Noreturn is new in C11.) |
27bf414c JM |
2090 | |
2091 | C90 6.5.2, C99 6.7.2: | |
2092 | type-specifier: | |
2093 | void | |
2094 | char | |
2095 | short | |
2096 | int | |
2097 | long | |
2098 | float | |
2099 | double | |
2100 | signed | |
2101 | unsigned | |
2102 | _Bool | |
2103 | _Complex | |
2104 | [_Imaginary removed in C99 TC2] | |
2105 | struct-or-union-specifier | |
2106 | enum-specifier | |
2107 | typedef-name | |
267bac10 | 2108 | atomic-type-specifier |
27bf414c JM |
2109 | |
2110 | (_Bool and _Complex are new in C99.) | |
267bac10 | 2111 | (atomic-type-specifier is new in C11.) |
27bf414c JM |
2112 | |
2113 | C90 6.5.3, C99 6.7.3: | |
2114 | ||
2115 | type-qualifier: | |
2116 | const | |
2117 | restrict | |
2118 | volatile | |
36c5e70a | 2119 | address-space-qualifier |
267bac10 | 2120 | _Atomic |
27bf414c JM |
2121 | |
2122 | (restrict is new in C99.) | |
267bac10 | 2123 | (_Atomic is new in C11.) |
27bf414c JM |
2124 | |
2125 | GNU extensions: | |
2126 | ||
2127 | declaration-specifiers: | |
2128 | attributes declaration-specifiers[opt] | |
2129 | ||
36c5e70a BE |
2130 | type-qualifier: |
2131 | address-space | |
2132 | ||
2133 | address-space: | |
2134 | identifier recognized by the target | |
2135 | ||
27bf414c JM |
2136 | storage-class-specifier: |
2137 | __thread | |
2138 | ||
2139 | type-specifier: | |
2140 | typeof-specifier | |
38b7bc7f | 2141 | __auto_type |
a6766312 | 2142 | __int128 |
9a8ce21f JG |
2143 | _Decimal32 |
2144 | _Decimal64 | |
2145 | _Decimal128 | |
ab22c1fa CF |
2146 | _Fract |
2147 | _Accum | |
2148 | _Sat | |
2149 | ||
2150 | (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037: | |
2151 | http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf) | |
27bf414c | 2152 | |
267bac10 JM |
2153 | atomic-type-specifier |
2154 | _Atomic ( type-name ) | |
2155 | ||
27bf414c JM |
2156 | Objective-C: |
2157 | ||
2158 | type-specifier: | |
2159 | class-name objc-protocol-refs[opt] | |
2160 | typedef-name objc-protocol-refs | |
2161 | objc-protocol-refs | |
2162 | */ | |
2163 | ||
2164 | static void | |
2165 | c_parser_declspecs (c_parser *parser, struct c_declspecs *specs, | |
29ce73cb | 2166 | bool scspec_ok, bool typespec_ok, bool start_attr_ok, |
38b7bc7f JM |
2167 | bool alignspec_ok, bool auto_type_ok, |
2168 | enum c_lookahead_kind la) | |
27bf414c JM |
2169 | { |
2170 | bool attrs_ok = start_attr_ok; | |
9e5b2115 | 2171 | bool seen_type = specs->typespec_kind != ctsk_none; |
29ce73cb PB |
2172 | |
2173 | if (!typespec_ok) | |
2174 | gcc_assert (la == cla_prefer_id); | |
2175 | ||
2176 | while (c_parser_next_token_is (parser, CPP_NAME) | |
27bf414c JM |
2177 | || c_parser_next_token_is (parser, CPP_KEYWORD) |
2178 | || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS))) | |
2179 | { | |
2180 | struct c_typespec t; | |
2181 | tree attrs; | |
d19fa6b5 | 2182 | tree align; |
dc491a25 | 2183 | location_t loc = c_parser_peek_token (parser)->location; |
f725e721 | 2184 | |
29ce73cb PB |
2185 | /* If we cannot accept a type, exit if the next token must start |
2186 | one. Also, if we already have seen a tagged definition, | |
2187 | a typename would be an error anyway and likely the user | |
2188 | has simply forgotten a semicolon, so we exit. */ | |
2189 | if ((!typespec_ok || specs->typespec_kind == ctsk_tagdef) | |
2190 | && c_parser_next_tokens_start_typename (parser, la) | |
2191 | && !c_parser_next_token_is_qualifier (parser)) | |
2192 | break; | |
f725e721 | 2193 | |
27bf414c JM |
2194 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2195 | { | |
0b2c4be5 DS |
2196 | c_token *name_token = c_parser_peek_token (parser); |
2197 | tree value = name_token->value; | |
2198 | c_id_kind kind = name_token->id_kind; | |
36c5e70a BE |
2199 | |
2200 | if (kind == C_ID_ADDRSPACE) | |
2201 | { | |
2202 | addr_space_t as | |
0b2c4be5 DS |
2203 | = name_token->keyword - RID_FIRST_ADDR_SPACE; |
2204 | declspecs_add_addrspace (name_token->location, specs, as); | |
36c5e70a BE |
2205 | c_parser_consume_token (parser); |
2206 | attrs_ok = true; | |
2207 | continue; | |
2208 | } | |
2209 | ||
29ce73cb PB |
2210 | gcc_assert (!c_parser_next_token_is_qualifier (parser)); |
2211 | ||
2212 | /* If we cannot accept a type, and the next token must start one, | |
2213 | exit. Do the same if we already have seen a tagged definition, | |
2214 | since it would be an error anyway and likely the user has simply | |
2215 | forgotten a semicolon. */ | |
2216 | if (seen_type || !c_parser_next_tokens_start_typename (parser, la)) | |
2217 | break; | |
2218 | ||
2219 | /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or | |
2220 | a C_ID_CLASSNAME. */ | |
27bf414c JM |
2221 | c_parser_consume_token (parser); |
2222 | seen_type = true; | |
2223 | attrs_ok = true; | |
29ce73cb PB |
2224 | if (kind == C_ID_ID) |
2225 | { | |
1c9f5f33 | 2226 | error_at (loc, "unknown type name %qE", value); |
29ce73cb PB |
2227 | t.kind = ctsk_typedef; |
2228 | t.spec = error_mark_node; | |
2229 | } | |
2230 | else if (kind == C_ID_TYPENAME | |
2231 | && (!c_dialect_objc () | |
2232 | || c_parser_next_token_is_not (parser, CPP_LESS))) | |
27bf414c JM |
2233 | { |
2234 | t.kind = ctsk_typedef; | |
2235 | /* For a typedef name, record the meaning, not the name. | |
2236 | In case of 'foo foo, bar;'. */ | |
2237 | t.spec = lookup_name (value); | |
2238 | } | |
2239 | else | |
2240 | { | |
2241 | tree proto = NULL_TREE; | |
2242 | gcc_assert (c_dialect_objc ()); | |
2243 | t.kind = ctsk_objc; | |
2244 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2245 | proto = c_parser_objc_protocol_refs (parser); | |
2246 | t.spec = objc_get_protocol_qualified_type (value, proto); | |
2247 | } | |
29ce73cb PB |
2248 | t.expr = NULL_TREE; |
2249 | t.expr_const_operands = true; | |
0b2c4be5 | 2250 | declspecs_add_type (name_token->location, specs, t); |
27bf414c JM |
2251 | continue; |
2252 | } | |
2253 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2254 | { | |
2255 | /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - | |
2256 | nisse@lysator.liu.se. */ | |
2257 | tree proto; | |
2258 | gcc_assert (c_dialect_objc ()); | |
2259 | if (!typespec_ok || seen_type) | |
2260 | break; | |
2261 | proto = c_parser_objc_protocol_refs (parser); | |
2262 | t.kind = ctsk_objc; | |
2263 | t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto); | |
928c19bb JM |
2264 | t.expr = NULL_TREE; |
2265 | t.expr_const_operands = true; | |
dc491a25 | 2266 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2267 | continue; |
2268 | } | |
2269 | gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD)); | |
2270 | switch (c_parser_peek_token (parser)->keyword) | |
2271 | { | |
2272 | case RID_STATIC: | |
2273 | case RID_EXTERN: | |
2274 | case RID_REGISTER: | |
2275 | case RID_TYPEDEF: | |
2276 | case RID_INLINE: | |
bbceee64 | 2277 | case RID_NORETURN: |
27bf414c JM |
2278 | case RID_AUTO: |
2279 | case RID_THREAD: | |
2280 | if (!scspec_ok) | |
2281 | goto out; | |
2282 | attrs_ok = true; | |
bbceee64 | 2283 | /* TODO: Distinguish between function specifiers (inline, noreturn) |
27bf414c JM |
2284 | and storage class specifiers, either here or in |
2285 | declspecs_add_scspec. */ | |
0b2c4be5 DS |
2286 | declspecs_add_scspec (loc, specs, |
2287 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
2288 | c_parser_consume_token (parser); |
2289 | break; | |
38b7bc7f JM |
2290 | case RID_AUTO_TYPE: |
2291 | if (!auto_type_ok) | |
2292 | goto out; | |
2293 | /* Fall through. */ | |
27bf414c JM |
2294 | case RID_UNSIGNED: |
2295 | case RID_LONG: | |
a6766312 | 2296 | case RID_INT128: |
27bf414c JM |
2297 | case RID_SHORT: |
2298 | case RID_SIGNED: | |
2299 | case RID_COMPLEX: | |
2300 | case RID_INT: | |
2301 | case RID_CHAR: | |
2302 | case RID_FLOAT: | |
2303 | case RID_DOUBLE: | |
2304 | case RID_VOID: | |
9a8ce21f JG |
2305 | case RID_DFLOAT32: |
2306 | case RID_DFLOAT64: | |
2307 | case RID_DFLOAT128: | |
27bf414c | 2308 | case RID_BOOL: |
ab22c1fa CF |
2309 | case RID_FRACT: |
2310 | case RID_ACCUM: | |
2311 | case RID_SAT: | |
27bf414c JM |
2312 | if (!typespec_ok) |
2313 | goto out; | |
2314 | attrs_ok = true; | |
2315 | seen_type = true; | |
0bacb8c7 TT |
2316 | if (c_dialect_objc ()) |
2317 | parser->objc_need_raw_identifier = true; | |
27bf414c JM |
2318 | t.kind = ctsk_resword; |
2319 | t.spec = c_parser_peek_token (parser)->value; | |
928c19bb JM |
2320 | t.expr = NULL_TREE; |
2321 | t.expr_const_operands = true; | |
dc491a25 | 2322 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2323 | c_parser_consume_token (parser); |
2324 | break; | |
2325 | case RID_ENUM: | |
2326 | if (!typespec_ok) | |
2327 | goto out; | |
2328 | attrs_ok = true; | |
2329 | seen_type = true; | |
2330 | t = c_parser_enum_specifier (parser); | |
dc491a25 | 2331 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2332 | break; |
2333 | case RID_STRUCT: | |
2334 | case RID_UNION: | |
2335 | if (!typespec_ok) | |
2336 | goto out; | |
2337 | attrs_ok = true; | |
2338 | seen_type = true; | |
2339 | t = c_parser_struct_or_union_specifier (parser); | |
dab71827 | 2340 | invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec); |
dc491a25 | 2341 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2342 | break; |
2343 | case RID_TYPEOF: | |
2344 | /* ??? The old parser rejected typeof after other type | |
2345 | specifiers, but is a syntax error the best way of | |
2346 | handling this? */ | |
2347 | if (!typespec_ok || seen_type) | |
2348 | goto out; | |
2349 | attrs_ok = true; | |
2350 | seen_type = true; | |
2351 | t = c_parser_typeof_specifier (parser); | |
dc491a25 | 2352 | declspecs_add_type (loc, specs, t); |
27bf414c | 2353 | break; |
267bac10 JM |
2354 | case RID_ATOMIC: |
2355 | /* C parser handling of Objective-C constructs needs | |
2356 | checking for correct lvalue-to-rvalue conversions, and | |
2357 | the code in build_modify_expr handling various | |
2358 | Objective-C cases, and that in build_unary_op handling | |
2359 | Objective-C cases for increment / decrement, also needs | |
2360 | updating; uses of TYPE_MAIN_VARIANT in objc_compare_types | |
2361 | and objc_types_are_equivalent may also need updates. */ | |
2362 | if (c_dialect_objc ()) | |
2363 | sorry ("%<_Atomic%> in Objective-C"); | |
2364 | /* C parser handling of OpenMP constructs needs checking for | |
2365 | correct lvalue-to-rvalue conversions. */ | |
2366 | if (flag_openmp) | |
2367 | sorry ("%<_Atomic%> with OpenMP"); | |
2368 | if (!flag_isoc11) | |
2369 | { | |
2370 | if (flag_isoc99) | |
2371 | pedwarn (loc, OPT_Wpedantic, | |
2372 | "ISO C99 does not support the %<_Atomic%> qualifier"); | |
2373 | else | |
2374 | pedwarn (loc, OPT_Wpedantic, | |
2375 | "ISO C90 does not support the %<_Atomic%> qualifier"); | |
2376 | } | |
2377 | attrs_ok = true; | |
2378 | tree value; | |
2379 | value = c_parser_peek_token (parser)->value; | |
2380 | c_parser_consume_token (parser); | |
2381 | if (typespec_ok && c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2382 | { | |
2383 | /* _Atomic ( type-name ). */ | |
2384 | seen_type = true; | |
2385 | c_parser_consume_token (parser); | |
2386 | struct c_type_name *type = c_parser_type_name (parser); | |
2387 | t.kind = ctsk_typeof; | |
2388 | t.spec = error_mark_node; | |
2389 | t.expr = NULL_TREE; | |
2390 | t.expr_const_operands = true; | |
2391 | if (type != NULL) | |
2392 | t.spec = groktypename (type, &t.expr, | |
2393 | &t.expr_const_operands); | |
2394 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2395 | "expected %<)%>"); | |
2396 | if (t.spec != error_mark_node) | |
2397 | { | |
2398 | if (TREE_CODE (t.spec) == ARRAY_TYPE) | |
2399 | error_at (loc, "%<_Atomic%>-qualified array type"); | |
2400 | else if (TREE_CODE (t.spec) == FUNCTION_TYPE) | |
2401 | error_at (loc, "%<_Atomic%>-qualified function type"); | |
2402 | else if (TYPE_QUALS (t.spec) != TYPE_UNQUALIFIED) | |
2403 | error_at (loc, "%<_Atomic%> applied to a qualified type"); | |
2404 | else | |
2405 | t.spec = c_build_qualified_type (t.spec, TYPE_QUAL_ATOMIC); | |
2406 | } | |
2407 | declspecs_add_type (loc, specs, t); | |
2408 | } | |
2409 | else | |
2410 | declspecs_add_qual (loc, specs, value); | |
2411 | break; | |
27bf414c JM |
2412 | case RID_CONST: |
2413 | case RID_VOLATILE: | |
2414 | case RID_RESTRICT: | |
2415 | attrs_ok = true; | |
0b2c4be5 | 2416 | declspecs_add_qual (loc, specs, c_parser_peek_token (parser)->value); |
27bf414c JM |
2417 | c_parser_consume_token (parser); |
2418 | break; | |
2419 | case RID_ATTRIBUTE: | |
2420 | if (!attrs_ok) | |
2421 | goto out; | |
2422 | attrs = c_parser_attributes (parser); | |
0b2c4be5 | 2423 | declspecs_add_attrs (loc, specs, attrs); |
27bf414c | 2424 | break; |
d19fa6b5 | 2425 | case RID_ALIGNAS: |
568a31f2 MP |
2426 | if (!alignspec_ok) |
2427 | goto out; | |
d19fa6b5 | 2428 | align = c_parser_alignas_specifier (parser); |
0b2c4be5 | 2429 | declspecs_add_alignas (loc, specs, align); |
d19fa6b5 | 2430 | break; |
27bf414c JM |
2431 | default: |
2432 | goto out; | |
2433 | } | |
2434 | } | |
2435 | out: ; | |
2436 | } | |
2437 | ||
2438 | /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2). | |
2439 | ||
2440 | enum-specifier: | |
2441 | enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt] | |
2442 | enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt] | |
2443 | enum attributes[opt] identifier | |
2444 | ||
2445 | The form with trailing comma is new in C99. The forms with | |
2446 | attributes are GNU extensions. In GNU C, we accept any expression | |
2447 | without commas in the syntax (assignment expressions, not just | |
2448 | conditional expressions); assignment expressions will be diagnosed | |
2449 | as non-constant. | |
2450 | ||
2451 | enumerator-list: | |
2452 | enumerator | |
2453 | enumerator-list , enumerator | |
2454 | ||
2455 | enumerator: | |
2456 | enumeration-constant | |
2457 | enumeration-constant = constant-expression | |
2458 | */ | |
2459 | ||
2460 | static struct c_typespec | |
2461 | c_parser_enum_specifier (c_parser *parser) | |
2462 | { | |
2463 | struct c_typespec ret; | |
2464 | tree attrs; | |
2465 | tree ident = NULL_TREE; | |
24b97832 | 2466 | location_t enum_loc; |
922f2908 | 2467 | location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c | 2468 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM)); |
24b97832 | 2469 | enum_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2470 | c_parser_consume_token (parser); |
2471 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2472 | enum_loc = c_parser_peek_token (parser)->location; |
5af28c74 TT |
2473 | /* Set the location in case we create a decl now. */ |
2474 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
27bf414c JM |
2475 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2476 | { | |
2477 | ident = c_parser_peek_token (parser)->value; | |
c7412148 | 2478 | ident_loc = c_parser_peek_token (parser)->location; |
24b97832 | 2479 | enum_loc = ident_loc; |
27bf414c JM |
2480 | c_parser_consume_token (parser); |
2481 | } | |
2482 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2483 | { | |
2484 | /* Parse an enum definition. */ | |
7114359f | 2485 | struct c_enum_contents the_enum; |
575bfb00 | 2486 | tree type; |
27bf414c JM |
2487 | tree postfix_attrs; |
2488 | /* We chain the enumerators in reverse order, then put them in | |
2489 | forward order at the end. */ | |
575bfb00 LC |
2490 | tree values; |
2491 | timevar_push (TV_PARSE_ENUM); | |
2492 | type = start_enum (enum_loc, &the_enum, ident); | |
2493 | values = NULL_TREE; | |
27bf414c JM |
2494 | c_parser_consume_token (parser); |
2495 | while (true) | |
2496 | { | |
2497 | tree enum_id; | |
2498 | tree enum_value; | |
2499 | tree enum_decl; | |
2500 | bool seen_comma; | |
5af28c74 | 2501 | c_token *token; |
922f2908 | 2502 | location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
7370e0da | 2503 | location_t decl_loc, value_loc; |
27bf414c JM |
2504 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
2505 | { | |
2506 | c_parser_error (parser, "expected identifier"); | |
2507 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2508 | values = error_mark_node; | |
2509 | break; | |
2510 | } | |
5af28c74 TT |
2511 | token = c_parser_peek_token (parser); |
2512 | enum_id = token->value; | |
2513 | /* Set the location in case we create a decl now. */ | |
2514 | c_parser_set_source_position_from_token (token); | |
7370e0da | 2515 | decl_loc = value_loc = token->location; |
27bf414c JM |
2516 | c_parser_consume_token (parser); |
2517 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
2518 | { | |
2519 | c_parser_consume_token (parser); | |
85790e66 | 2520 | value_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2521 | enum_value = c_parser_expr_no_commas (parser, NULL).value; |
2522 | } | |
2523 | else | |
2524 | enum_value = NULL_TREE; | |
7370e0da | 2525 | enum_decl = build_enumerator (decl_loc, value_loc, |
c2255bc4 | 2526 | &the_enum, enum_id, enum_value); |
27bf414c JM |
2527 | TREE_CHAIN (enum_decl) = values; |
2528 | values = enum_decl; | |
2529 | seen_comma = false; | |
2530 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2531 | { | |
c7412148 | 2532 | comma_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2533 | seen_comma = true; |
2534 | c_parser_consume_token (parser); | |
2535 | } | |
2536 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2537 | { | |
fcf73884 | 2538 | if (seen_comma && !flag_isoc99) |
c1771a20 | 2539 | pedwarn (comma_loc, OPT_Wpedantic, "comma at end of enumerator list"); |
27bf414c JM |
2540 | c_parser_consume_token (parser); |
2541 | break; | |
2542 | } | |
2543 | if (!seen_comma) | |
2544 | { | |
2545 | c_parser_error (parser, "expected %<,%> or %<}%>"); | |
2546 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2547 | values = error_mark_node; | |
2548 | break; | |
2549 | } | |
2550 | } | |
2551 | postfix_attrs = c_parser_attributes (parser); | |
2552 | ret.spec = finish_enum (type, nreverse (values), | |
2553 | chainon (attrs, postfix_attrs)); | |
2554 | ret.kind = ctsk_tagdef; | |
928c19bb JM |
2555 | ret.expr = NULL_TREE; |
2556 | ret.expr_const_operands = true; | |
575bfb00 | 2557 | timevar_pop (TV_PARSE_ENUM); |
27bf414c JM |
2558 | return ret; |
2559 | } | |
2560 | else if (!ident) | |
2561 | { | |
2562 | c_parser_error (parser, "expected %<{%>"); | |
2563 | ret.spec = error_mark_node; | |
2564 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2565 | ret.expr = NULL_TREE; |
2566 | ret.expr_const_operands = true; | |
27bf414c JM |
2567 | return ret; |
2568 | } | |
c2255bc4 | 2569 | ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident); |
27bf414c JM |
2570 | /* In ISO C, enumerated types can be referred to only if already |
2571 | defined. */ | |
2572 | if (pedantic && !COMPLETE_TYPE_P (ret.spec)) | |
c7412148 TT |
2573 | { |
2574 | gcc_assert (ident); | |
c1771a20 | 2575 | pedwarn (enum_loc, OPT_Wpedantic, |
509c9d60 | 2576 | "ISO C forbids forward references to %<enum%> types"); |
c7412148 | 2577 | } |
27bf414c JM |
2578 | return ret; |
2579 | } | |
2580 | ||
2581 | /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1). | |
2582 | ||
2583 | struct-or-union-specifier: | |
2584 | struct-or-union attributes[opt] identifier[opt] | |
2585 | { struct-contents } attributes[opt] | |
2586 | struct-or-union attributes[opt] identifier | |
2587 | ||
2588 | struct-contents: | |
2589 | struct-declaration-list | |
2590 | ||
2591 | struct-declaration-list: | |
2592 | struct-declaration ; | |
2593 | struct-declaration-list struct-declaration ; | |
2594 | ||
2595 | GNU extensions: | |
2596 | ||
2597 | struct-contents: | |
2598 | empty | |
2599 | struct-declaration | |
2600 | struct-declaration-list struct-declaration | |
2601 | ||
2602 | struct-declaration-list: | |
2603 | struct-declaration-list ; | |
2604 | ; | |
2605 | ||
2606 | (Note that in the syntax here, unlike that in ISO C, the semicolons | |
2607 | are included here rather than in struct-declaration, in order to | |
2608 | describe the syntax with extra semicolons and missing semicolon at | |
2609 | end.) | |
2610 | ||
2611 | Objective-C: | |
2612 | ||
2613 | struct-declaration-list: | |
2614 | @defs ( class-name ) | |
2615 | ||
2616 | (Note this does not include a trailing semicolon, but can be | |
2617 | followed by further declarations, and gets a pedwarn-if-pedantic | |
2618 | when followed by a semicolon.) */ | |
2619 | ||
2620 | static struct c_typespec | |
2621 | c_parser_struct_or_union_specifier (c_parser *parser) | |
2622 | { | |
2623 | struct c_typespec ret; | |
2624 | tree attrs; | |
2625 | tree ident = NULL_TREE; | |
24b97832 ILT |
2626 | location_t struct_loc; |
2627 | location_t ident_loc = UNKNOWN_LOCATION; | |
27bf414c JM |
2628 | enum tree_code code; |
2629 | switch (c_parser_peek_token (parser)->keyword) | |
2630 | { | |
2631 | case RID_STRUCT: | |
2632 | code = RECORD_TYPE; | |
2633 | break; | |
2634 | case RID_UNION: | |
2635 | code = UNION_TYPE; | |
2636 | break; | |
2637 | default: | |
2638 | gcc_unreachable (); | |
2639 | } | |
24b97832 | 2640 | struct_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2641 | c_parser_consume_token (parser); |
2642 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2643 | |
5af28c74 TT |
2644 | /* Set the location in case we create a decl now. */ |
2645 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
c2255bc4 | 2646 | |
27bf414c JM |
2647 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2648 | { | |
2649 | ident = c_parser_peek_token (parser)->value; | |
24b97832 ILT |
2650 | ident_loc = c_parser_peek_token (parser)->location; |
2651 | struct_loc = ident_loc; | |
27bf414c JM |
2652 | c_parser_consume_token (parser); |
2653 | } | |
2654 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2655 | { | |
2656 | /* Parse a struct or union definition. Start the scope of the | |
2657 | tag before parsing components. */ | |
dc491a25 ILT |
2658 | struct c_struct_parse_info *struct_info; |
2659 | tree type = start_struct (struct_loc, code, ident, &struct_info); | |
27bf414c JM |
2660 | tree postfix_attrs; |
2661 | /* We chain the components in reverse order, then put them in | |
2662 | forward order at the end. Each struct-declaration may | |
2663 | declare multiple components (comma-separated), so we must use | |
2664 | chainon to join them, although when parsing each | |
2665 | struct-declaration we can use TREE_CHAIN directly. | |
2666 | ||
2667 | The theory behind all this is that there will be more | |
2668 | semicolon separated fields than comma separated fields, and | |
2669 | so we'll be minimizing the number of node traversals required | |
2670 | by chainon. */ | |
575bfb00 LC |
2671 | tree contents; |
2672 | timevar_push (TV_PARSE_STRUCT); | |
2673 | contents = NULL_TREE; | |
27bf414c JM |
2674 | c_parser_consume_token (parser); |
2675 | /* Handle the Objective-C @defs construct, | |
2676 | e.g. foo(sizeof(struct{ @defs(ClassName) }));. */ | |
2677 | if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS)) | |
2678 | { | |
2679 | tree name; | |
2680 | gcc_assert (c_dialect_objc ()); | |
2681 | c_parser_consume_token (parser); | |
2682 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2683 | goto end_at_defs; | |
2684 | if (c_parser_next_token_is (parser, CPP_NAME) | |
2685 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME) | |
2686 | { | |
2687 | name = c_parser_peek_token (parser)->value; | |
2688 | c_parser_consume_token (parser); | |
2689 | } | |
2690 | else | |
2691 | { | |
2692 | c_parser_error (parser, "expected class name"); | |
2693 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
2694 | goto end_at_defs; | |
2695 | } | |
2696 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2697 | "expected %<)%>"); | |
2698 | contents = nreverse (objc_get_class_ivars (name)); | |
2699 | } | |
2700 | end_at_defs: | |
2701 | /* Parse the struct-declarations and semicolons. Problems with | |
2702 | semicolons are diagnosed here; empty structures are diagnosed | |
2703 | elsewhere. */ | |
2704 | while (true) | |
2705 | { | |
2706 | tree decls; | |
2707 | /* Parse any stray semicolon. */ | |
2708 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2709 | { | |
c1771a20 | 2710 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 2711 | "extra semicolon in struct or union specified"); |
27bf414c JM |
2712 | c_parser_consume_token (parser); |
2713 | continue; | |
2714 | } | |
2715 | /* Stop if at the end of the struct or union contents. */ | |
2716 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2717 | { | |
2718 | c_parser_consume_token (parser); | |
2719 | break; | |
2720 | } | |
bc4071dd RH |
2721 | /* Accept #pragmas at struct scope. */ |
2722 | if (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
2723 | { | |
acf0174b | 2724 | c_parser_pragma (parser, pragma_struct); |
bc4071dd RH |
2725 | continue; |
2726 | } | |
27bf414c JM |
2727 | /* Parse some comma-separated declarations, but not the |
2728 | trailing semicolon if any. */ | |
2729 | decls = c_parser_struct_declaration (parser); | |
2730 | contents = chainon (decls, contents); | |
2731 | /* If no semicolon follows, either we have a parse error or | |
2732 | are at the end of the struct or union and should | |
2733 | pedwarn. */ | |
2734 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2735 | c_parser_consume_token (parser); | |
2736 | else | |
2737 | { | |
2738 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
b8698a0f | 2739 | pedwarn (c_parser_peek_token (parser)->location, 0, |
509c9d60 | 2740 | "no semicolon at end of struct or union"); |
f725e721 PB |
2741 | else if (parser->error |
2742 | || !c_parser_next_token_starts_declspecs (parser)) | |
27bf414c JM |
2743 | { |
2744 | c_parser_error (parser, "expected %<;%>"); | |
2745 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2746 | break; | |
2747 | } | |
f725e721 PB |
2748 | |
2749 | /* If we come here, we have already emitted an error | |
2750 | for an expected `;', identifier or `(', and we also | |
2751 | recovered already. Go on with the next field. */ | |
27bf414c JM |
2752 | } |
2753 | } | |
2754 | postfix_attrs = c_parser_attributes (parser); | |
c2255bc4 | 2755 | ret.spec = finish_struct (struct_loc, type, nreverse (contents), |
dc491a25 | 2756 | chainon (attrs, postfix_attrs), struct_info); |
27bf414c | 2757 | ret.kind = ctsk_tagdef; |
928c19bb JM |
2758 | ret.expr = NULL_TREE; |
2759 | ret.expr_const_operands = true; | |
575bfb00 | 2760 | timevar_pop (TV_PARSE_STRUCT); |
27bf414c JM |
2761 | return ret; |
2762 | } | |
2763 | else if (!ident) | |
2764 | { | |
2765 | c_parser_error (parser, "expected %<{%>"); | |
2766 | ret.spec = error_mark_node; | |
2767 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2768 | ret.expr = NULL_TREE; |
2769 | ret.expr_const_operands = true; | |
67c2939d | 2770 | return ret; |
27bf414c | 2771 | } |
c2255bc4 | 2772 | ret = parser_xref_tag (ident_loc, code, ident); |
27bf414c JM |
2773 | return ret; |
2774 | } | |
2775 | ||
2776 | /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without* | |
2777 | the trailing semicolon. | |
2778 | ||
2779 | struct-declaration: | |
2780 | specifier-qualifier-list struct-declarator-list | |
32912286 | 2781 | static_assert-declaration-no-semi |
27bf414c JM |
2782 | |
2783 | specifier-qualifier-list: | |
2784 | type-specifier specifier-qualifier-list[opt] | |
2785 | type-qualifier specifier-qualifier-list[opt] | |
2786 | attributes specifier-qualifier-list[opt] | |
2787 | ||
2788 | struct-declarator-list: | |
2789 | struct-declarator | |
2790 | struct-declarator-list , attributes[opt] struct-declarator | |
2791 | ||
2792 | struct-declarator: | |
2793 | declarator attributes[opt] | |
2794 | declarator[opt] : constant-expression attributes[opt] | |
2795 | ||
2796 | GNU extensions: | |
2797 | ||
2798 | struct-declaration: | |
2799 | __extension__ struct-declaration | |
2800 | specifier-qualifier-list | |
2801 | ||
2802 | Unlike the ISO C syntax, semicolons are handled elsewhere. The use | |
2803 | of attributes where shown is a GNU extension. In GNU C, we accept | |
2804 | any expression without commas in the syntax (assignment | |
2805 | expressions, not just conditional expressions); assignment | |
2806 | expressions will be diagnosed as non-constant. */ | |
2807 | ||
2808 | static tree | |
2809 | c_parser_struct_declaration (c_parser *parser) | |
2810 | { | |
2811 | struct c_declspecs *specs; | |
2812 | tree prefix_attrs; | |
2813 | tree all_prefix_attrs; | |
2814 | tree decls; | |
c7412148 | 2815 | location_t decl_loc; |
27bf414c JM |
2816 | if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) |
2817 | { | |
2818 | int ext; | |
2819 | tree decl; | |
2820 | ext = disable_extension_diagnostics (); | |
2821 | c_parser_consume_token (parser); | |
2822 | decl = c_parser_struct_declaration (parser); | |
2823 | restore_extension_diagnostics (ext); | |
2824 | return decl; | |
2825 | } | |
32912286 JM |
2826 | if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) |
2827 | { | |
2828 | c_parser_static_assert_declaration_no_semi (parser); | |
2829 | return NULL_TREE; | |
2830 | } | |
27bf414c | 2831 | specs = build_null_declspecs (); |
c7412148 | 2832 | decl_loc = c_parser_peek_token (parser)->location; |
f28aa681 MP |
2833 | /* Strictly by the standard, we shouldn't allow _Alignas here, |
2834 | but it appears to have been intended to allow it there, so | |
2835 | we're keeping it as it is until WG14 reaches a conclusion | |
2836 | of N1731. | |
2837 | <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1731.pdf> */ | |
568a31f2 | 2838 | c_parser_declspecs (parser, specs, false, true, true, |
38b7bc7f | 2839 | true, false, cla_nonabstract_decl); |
27bf414c | 2840 | if (parser->error) |
67c2939d | 2841 | return NULL_TREE; |
27bf414c JM |
2842 | if (!specs->declspecs_seen_p) |
2843 | { | |
2844 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
2845 | return NULL_TREE; | |
2846 | } | |
2847 | finish_declspecs (specs); | |
b8cbdff5 JM |
2848 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) |
2849 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
27bf414c JM |
2850 | { |
2851 | tree ret; | |
9e5b2115 | 2852 | if (specs->typespec_kind == ctsk_none) |
27bf414c | 2853 | { |
c1771a20 | 2854 | pedwarn (decl_loc, OPT_Wpedantic, |
509c9d60 | 2855 | "ISO C forbids member declarations with no members"); |
27bf414c JM |
2856 | shadow_tag_warned (specs, pedantic); |
2857 | ret = NULL_TREE; | |
2858 | } | |
2859 | else | |
2860 | { | |
2861 | /* Support for unnamed structs or unions as members of | |
2862 | structs or unions (which is [a] useful and [b] supports | |
2863 | MS P-SDK). */ | |
b9baeecd | 2864 | tree attrs = NULL; |
3d10ed6c AH |
2865 | |
2866 | ret = grokfield (c_parser_peek_token (parser)->location, | |
2867 | build_id_declarator (NULL_TREE), specs, | |
b9baeecd | 2868 | NULL_TREE, &attrs); |
0ad7e054 RS |
2869 | if (ret) |
2870 | decl_attributes (&ret, attrs, 0); | |
27bf414c JM |
2871 | } |
2872 | return ret; | |
2873 | } | |
f725e721 PB |
2874 | |
2875 | /* Provide better error recovery. Note that a type name here is valid, | |
2876 | and will be treated as a field name. */ | |
2877 | if (specs->typespec_kind == ctsk_tagdef | |
2878 | && TREE_CODE (specs->type) != ENUMERAL_TYPE | |
2879 | && c_parser_next_token_starts_declspecs (parser) | |
2880 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
2881 | { | |
2882 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
2883 | parser->error = false; | |
2884 | return NULL_TREE; | |
2885 | } | |
2886 | ||
27bf414c JM |
2887 | pending_xref_error (); |
2888 | prefix_attrs = specs->attrs; | |
2889 | all_prefix_attrs = prefix_attrs; | |
2890 | specs->attrs = NULL_TREE; | |
2891 | decls = NULL_TREE; | |
2892 | while (true) | |
2893 | { | |
2894 | /* Declaring one or more declarators or un-named bit-fields. */ | |
2895 | struct c_declarator *declarator; | |
2896 | bool dummy = false; | |
2897 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2898 | declarator = build_id_declarator (NULL_TREE); | |
2899 | else | |
9e5b2115 PB |
2900 | declarator = c_parser_declarator (parser, |
2901 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
2902 | C_DTR_NORMAL, &dummy); |
2903 | if (declarator == NULL) | |
2904 | { | |
2905 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2906 | break; | |
2907 | } | |
2908 | if (c_parser_next_token_is (parser, CPP_COLON) | |
2909 | || c_parser_next_token_is (parser, CPP_COMMA) | |
2910 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2911 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE) | |
2912 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2913 | { | |
2914 | tree postfix_attrs = NULL_TREE; | |
2915 | tree width = NULL_TREE; | |
2916 | tree d; | |
2917 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2918 | { | |
2919 | c_parser_consume_token (parser); | |
2920 | width = c_parser_expr_no_commas (parser, NULL).value; | |
2921 | } | |
2922 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2923 | postfix_attrs = c_parser_attributes (parser); | |
3d10ed6c AH |
2924 | d = grokfield (c_parser_peek_token (parser)->location, |
2925 | declarator, specs, width, &all_prefix_attrs); | |
27bf414c JM |
2926 | decl_attributes (&d, chainon (postfix_attrs, |
2927 | all_prefix_attrs), 0); | |
910ad8de | 2928 | DECL_CHAIN (d) = decls; |
27bf414c JM |
2929 | decls = d; |
2930 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2931 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
2932 | prefix_attrs); | |
2933 | else | |
2934 | all_prefix_attrs = prefix_attrs; | |
2935 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2936 | c_parser_consume_token (parser); | |
2937 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2938 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2939 | { | |
2940 | /* Semicolon consumed in caller. */ | |
2941 | break; | |
2942 | } | |
2943 | else | |
2944 | { | |
2945 | c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>"); | |
2946 | break; | |
2947 | } | |
2948 | } | |
2949 | else | |
2950 | { | |
2951 | c_parser_error (parser, | |
2952 | "expected %<:%>, %<,%>, %<;%>, %<}%> or " | |
2953 | "%<__attribute__%>"); | |
2954 | break; | |
2955 | } | |
2956 | } | |
2957 | return decls; | |
2958 | } | |
2959 | ||
2960 | /* Parse a typeof specifier (a GNU extension). | |
2961 | ||
2962 | typeof-specifier: | |
2963 | typeof ( expression ) | |
2964 | typeof ( type-name ) | |
2965 | */ | |
2966 | ||
2967 | static struct c_typespec | |
2968 | c_parser_typeof_specifier (c_parser *parser) | |
2969 | { | |
2970 | struct c_typespec ret; | |
2971 | ret.kind = ctsk_typeof; | |
2972 | ret.spec = error_mark_node; | |
928c19bb JM |
2973 | ret.expr = NULL_TREE; |
2974 | ret.expr_const_operands = true; | |
27bf414c JM |
2975 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF)); |
2976 | c_parser_consume_token (parser); | |
7d882b83 | 2977 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
2978 | in_typeof++; |
2979 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2980 | { | |
7d882b83 | 2981 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2982 | in_typeof--; |
2983 | return ret; | |
2984 | } | |
29ce73cb | 2985 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) |
27bf414c JM |
2986 | { |
2987 | struct c_type_name *type = c_parser_type_name (parser); | |
7d882b83 | 2988 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
2989 | in_typeof--; |
2990 | if (type != NULL) | |
2991 | { | |
928c19bb | 2992 | ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands); |
27bf414c JM |
2993 | pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE)); |
2994 | } | |
2995 | } | |
2996 | else | |
2997 | { | |
52ffd86e | 2998 | bool was_vm; |
c7412148 | 2999 | location_t here = c_parser_peek_token (parser)->location; |
27bf414c | 3000 | struct c_expr expr = c_parser_expression (parser); |
7d882b83 | 3001 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
3002 | in_typeof--; |
3003 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
3004 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 3005 | error_at (here, "%<typeof%> applied to a bit-field"); |
ebfbbdc5 | 3006 | mark_exp_read (expr.value); |
27bf414c | 3007 | ret.spec = TREE_TYPE (expr.value); |
52ffd86e | 3008 | was_vm = variably_modified_type_p (ret.spec, NULL_TREE); |
928c19bb JM |
3009 | /* This is returned with the type so that when the type is |
3010 | evaluated, this can be evaluated. */ | |
3011 | if (was_vm) | |
3012 | ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands); | |
52ffd86e | 3013 | pop_maybe_used (was_vm); |
267bac10 JM |
3014 | /* For use in macros such as those in <stdatomic.h>, remove |
3015 | _Atomic and const qualifiers from atomic types. (Possibly | |
3016 | all qualifiers should be removed; const can be an issue for | |
3017 | more macros using typeof than just the <stdatomic.h> | |
3018 | ones.) */ | |
3019 | if (ret.spec != error_mark_node && TYPE_ATOMIC (ret.spec)) | |
3020 | ret.spec = c_build_qualified_type (ret.spec, | |
3021 | (TYPE_QUALS (ret.spec) | |
3022 | & ~(TYPE_QUAL_ATOMIC | |
3023 | | TYPE_QUAL_CONST))); | |
27bf414c JM |
3024 | } |
3025 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
3026 | return ret; | |
3027 | } | |
3028 | ||
d19fa6b5 JM |
3029 | /* Parse an alignment-specifier. |
3030 | ||
48b0b196 | 3031 | C11 6.7.5: |
d19fa6b5 JM |
3032 | |
3033 | alignment-specifier: | |
3034 | _Alignas ( type-name ) | |
3035 | _Alignas ( constant-expression ) | |
3036 | */ | |
3037 | ||
3038 | static tree | |
3039 | c_parser_alignas_specifier (c_parser * parser) | |
3040 | { | |
3041 | tree ret = error_mark_node; | |
3042 | location_t loc = c_parser_peek_token (parser)->location; | |
3043 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNAS)); | |
3044 | c_parser_consume_token (parser); | |
48b0b196 | 3045 | if (!flag_isoc11) |
d19fa6b5 JM |
3046 | { |
3047 | if (flag_isoc99) | |
c1771a20 | 3048 | pedwarn (loc, OPT_Wpedantic, |
d19fa6b5 JM |
3049 | "ISO C99 does not support %<_Alignas%>"); |
3050 | else | |
c1771a20 | 3051 | pedwarn (loc, OPT_Wpedantic, |
d19fa6b5 JM |
3052 | "ISO C90 does not support %<_Alignas%>"); |
3053 | } | |
3054 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3055 | return ret; | |
3056 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) | |
3057 | { | |
3058 | struct c_type_name *type = c_parser_type_name (parser); | |
3059 | if (type != NULL) | |
296674db JM |
3060 | ret = c_sizeof_or_alignof_type (loc, groktypename (type, NULL, NULL), |
3061 | false, true, 1); | |
d19fa6b5 JM |
3062 | } |
3063 | else | |
3064 | ret = c_parser_expr_no_commas (parser, NULL).value; | |
3065 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
3066 | return ret; | |
3067 | } | |
3068 | ||
27bf414c JM |
3069 | /* Parse a declarator, possibly an abstract declarator (C90 6.5.4, |
3070 | 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may | |
3071 | be redeclared; otherwise it may not. KIND indicates which kind of | |
3072 | declarator is wanted. Returns a valid declarator except in the | |
3073 | case of a syntax error in which case NULL is returned. *SEEN_ID is | |
3074 | set to true if an identifier being declared is seen; this is used | |
3075 | to diagnose bad forms of abstract array declarators and to | |
3076 | determine whether an identifier list is syntactically permitted. | |
3077 | ||
3078 | declarator: | |
3079 | pointer[opt] direct-declarator | |
3080 | ||
3081 | direct-declarator: | |
3082 | identifier | |
3083 | ( attributes[opt] declarator ) | |
3084 | direct-declarator array-declarator | |
3085 | direct-declarator ( parameter-type-list ) | |
3086 | direct-declarator ( identifier-list[opt] ) | |
3087 | ||
3088 | pointer: | |
3089 | * type-qualifier-list[opt] | |
3090 | * type-qualifier-list[opt] pointer | |
3091 | ||
3092 | type-qualifier-list: | |
3093 | type-qualifier | |
3094 | attributes | |
3095 | type-qualifier-list type-qualifier | |
3096 | type-qualifier-list attributes | |
3097 | ||
568a31f2 MP |
3098 | array-declarator: |
3099 | [ type-qualifier-list[opt] assignment-expression[opt] ] | |
3100 | [ static type-qualifier-list[opt] assignment-expression ] | |
3101 | [ type-qualifier-list static assignment-expression ] | |
3102 | [ type-qualifier-list[opt] * ] | |
3103 | ||
27bf414c JM |
3104 | parameter-type-list: |
3105 | parameter-list | |
3106 | parameter-list , ... | |
3107 | ||
3108 | parameter-list: | |
3109 | parameter-declaration | |
3110 | parameter-list , parameter-declaration | |
3111 | ||
3112 | parameter-declaration: | |
3113 | declaration-specifiers declarator attributes[opt] | |
3114 | declaration-specifiers abstract-declarator[opt] attributes[opt] | |
3115 | ||
3116 | identifier-list: | |
3117 | identifier | |
3118 | identifier-list , identifier | |
3119 | ||
3120 | abstract-declarator: | |
3121 | pointer | |
3122 | pointer[opt] direct-abstract-declarator | |
3123 | ||
3124 | direct-abstract-declarator: | |
3125 | ( attributes[opt] abstract-declarator ) | |
3126 | direct-abstract-declarator[opt] array-declarator | |
3127 | direct-abstract-declarator[opt] ( parameter-type-list[opt] ) | |
3128 | ||
3129 | GNU extensions: | |
3130 | ||
3131 | direct-declarator: | |
3132 | direct-declarator ( parameter-forward-declarations | |
3133 | parameter-type-list[opt] ) | |
3134 | ||
3135 | direct-abstract-declarator: | |
c22cacf3 | 3136 | direct-abstract-declarator[opt] ( parameter-forward-declarations |
27bf414c JM |
3137 | parameter-type-list[opt] ) |
3138 | ||
3139 | parameter-forward-declarations: | |
3140 | parameter-list ; | |
3141 | parameter-forward-declarations parameter-list ; | |
3142 | ||
3143 | The uses of attributes shown above are GNU extensions. | |
3144 | ||
3145 | Some forms of array declarator are not included in C99 in the | |
3146 | syntax for abstract declarators; these are disallowed elsewhere. | |
3147 | This may be a defect (DR#289). | |
3148 | ||
3149 | This function also accepts an omitted abstract declarator as being | |
3150 | an abstract declarator, although not part of the formal syntax. */ | |
3151 | ||
3152 | static struct c_declarator * | |
3153 | c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
3154 | bool *seen_id) | |
3155 | { | |
3156 | /* Parse any initial pointer part. */ | |
3157 | if (c_parser_next_token_is (parser, CPP_MULT)) | |
3158 | { | |
3159 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
3160 | struct c_declarator *inner; | |
3161 | c_parser_consume_token (parser); | |
568a31f2 | 3162 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3163 | false, false, cla_prefer_id); |
27bf414c JM |
3164 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); |
3165 | if (inner == NULL) | |
3166 | return NULL; | |
3167 | else | |
3168 | return make_pointer_declarator (quals_attrs, inner); | |
3169 | } | |
3170 | /* Now we have a direct declarator, direct abstract declarator or | |
3171 | nothing (which counts as a direct abstract declarator here). */ | |
3172 | return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id); | |
3173 | } | |
3174 | ||
3175 | /* Parse a direct declarator or direct abstract declarator; arguments | |
3176 | as c_parser_declarator. */ | |
3177 | ||
3178 | static struct c_declarator * | |
3179 | c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
3180 | bool *seen_id) | |
3181 | { | |
3182 | /* The direct declarator must start with an identifier (possibly | |
3183 | omitted) or a parenthesized declarator (possibly abstract). In | |
3184 | an ordinary declarator, initial parentheses must start a | |
3185 | parenthesized declarator. In an abstract declarator or parameter | |
3186 | declarator, they could start a parenthesized declarator or a | |
3187 | parameter list. To tell which, the open parenthesis and any | |
3188 | following attributes must be read. If a declaration specifier | |
3189 | follows, then it is a parameter list; if the specifier is a | |
3190 | typedef name, there might be an ambiguity about redeclaring it, | |
3191 | which is resolved in the direction of treating it as a typedef | |
3192 | name. If a close parenthesis follows, it is also an empty | |
3193 | parameter list, as the syntax does not permit empty abstract | |
0fa2e4df | 3194 | declarators. Otherwise, it is a parenthesized declarator (in |
27bf414c JM |
3195 | which case the analysis may be repeated inside it, recursively). |
3196 | ||
3197 | ??? There is an ambiguity in a parameter declaration "int | |
3198 | (__attribute__((foo)) x)", where x is not a typedef name: it | |
3199 | could be an abstract declarator for a function, or declare x with | |
3200 | parentheses. The proper resolution of this ambiguity needs | |
3201 | documenting. At present we follow an accident of the old | |
3202 | parser's implementation, whereby the first parameter must have | |
3203 | some declaration specifiers other than just attributes. Thus as | |
0fa2e4df | 3204 | a parameter declaration it is treated as a parenthesized |
27bf414c JM |
3205 | parameter named x, and as an abstract declarator it is |
3206 | rejected. | |
3207 | ||
3208 | ??? Also following the old parser, attributes inside an empty | |
3209 | parameter list are ignored, making it a list not yielding a | |
3210 | prototype, rather than giving an error or making it have one | |
3211 | parameter with implicit type int. | |
3212 | ||
3213 | ??? Also following the old parser, typedef names may be | |
3214 | redeclared in declarators, but not Objective-C class names. */ | |
3215 | ||
3216 | if (kind != C_DTR_ABSTRACT | |
3217 | && c_parser_next_token_is (parser, CPP_NAME) | |
3218 | && ((type_seen_p | |
a6341d57 NP |
3219 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME |
3220 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3221 | || c_parser_peek_token (parser)->id_kind == C_ID_ID)) |
3222 | { | |
3223 | struct c_declarator *inner | |
3224 | = build_id_declarator (c_parser_peek_token (parser)->value); | |
3225 | *seen_id = true; | |
6037d88d | 3226 | inner->id_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3227 | c_parser_consume_token (parser); |
3228 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3229 | } | |
3230 | ||
3231 | if (kind != C_DTR_NORMAL | |
3232 | && c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
3233 | { | |
3234 | struct c_declarator *inner = build_id_declarator (NULL_TREE); | |
3235 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3236 | } | |
3237 | ||
3238 | /* Either we are at the end of an abstract declarator, or we have | |
3239 | parentheses. */ | |
3240 | ||
3241 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3242 | { | |
3243 | tree attrs; | |
3244 | struct c_declarator *inner; | |
3245 | c_parser_consume_token (parser); | |
3246 | attrs = c_parser_attributes (parser); | |
3247 | if (kind != C_DTR_NORMAL | |
3248 | && (c_parser_next_token_starts_declspecs (parser) | |
3249 | || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))) | |
3250 | { | |
3251 | struct c_arg_info *args | |
3252 | = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL, | |
3253 | attrs); | |
3254 | if (args == NULL) | |
3255 | return NULL; | |
3256 | else | |
3257 | { | |
3258 | inner | |
3259 | = build_function_declarator (args, | |
3260 | build_id_declarator (NULL_TREE)); | |
3261 | return c_parser_direct_declarator_inner (parser, *seen_id, | |
3262 | inner); | |
3263 | } | |
3264 | } | |
3265 | /* A parenthesized declarator. */ | |
3266 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
3267 | if (inner != NULL && attrs != NULL) | |
3268 | inner = build_attrs_declarator (attrs, inner); | |
3269 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3270 | { | |
3271 | c_parser_consume_token (parser); | |
3272 | if (inner == NULL) | |
3273 | return NULL; | |
3274 | else | |
3275 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3276 | } | |
3277 | else | |
3278 | { | |
3279 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3280 | "expected %<)%>"); | |
3281 | return NULL; | |
3282 | } | |
3283 | } | |
3284 | else | |
3285 | { | |
3286 | if (kind == C_DTR_NORMAL) | |
3287 | { | |
3288 | c_parser_error (parser, "expected identifier or %<(%>"); | |
3289 | return NULL; | |
3290 | } | |
3291 | else | |
3292 | return build_id_declarator (NULL_TREE); | |
3293 | } | |
3294 | } | |
3295 | ||
3296 | /* Parse part of a direct declarator or direct abstract declarator, | |
3297 | given that some (in INNER) has already been parsed; ID_PRESENT is | |
3298 | true if an identifier is present, false for an abstract | |
3299 | declarator. */ | |
3300 | ||
3301 | static struct c_declarator * | |
3302 | c_parser_direct_declarator_inner (c_parser *parser, bool id_present, | |
3303 | struct c_declarator *inner) | |
3304 | { | |
3305 | /* Parse a sequence of array declarators and parameter lists. */ | |
3306 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
3307 | { | |
b8698a0f | 3308 | location_t brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3309 | struct c_declarator *declarator; |
3310 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
3311 | bool static_seen; | |
3312 | bool star_seen; | |
267bac10 JM |
3313 | struct c_expr dimen; |
3314 | dimen.value = NULL_TREE; | |
3315 | dimen.original_code = ERROR_MARK; | |
3316 | dimen.original_type = NULL_TREE; | |
27bf414c | 3317 | c_parser_consume_token (parser); |
568a31f2 | 3318 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3319 | false, false, cla_prefer_id); |
27bf414c JM |
3320 | static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC); |
3321 | if (static_seen) | |
3322 | c_parser_consume_token (parser); | |
3323 | if (static_seen && !quals_attrs->declspecs_seen_p) | |
568a31f2 | 3324 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3325 | false, false, cla_prefer_id); |
27bf414c JM |
3326 | if (!quals_attrs->declspecs_seen_p) |
3327 | quals_attrs = NULL; | |
3328 | /* If "static" is present, there must be an array dimension. | |
3329 | Otherwise, there may be a dimension, "*", or no | |
3330 | dimension. */ | |
3331 | if (static_seen) | |
3332 | { | |
3333 | star_seen = false; | |
267bac10 | 3334 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3335 | } |
3336 | else | |
3337 | { | |
3338 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3339 | { | |
267bac10 | 3340 | dimen.value = NULL_TREE; |
27bf414c JM |
3341 | star_seen = false; |
3342 | } | |
b72271b9 | 3343 | else if (flag_cilkplus |
36536d79 BI |
3344 | && c_parser_next_token_is (parser, CPP_COLON)) |
3345 | { | |
267bac10 | 3346 | dimen.value = error_mark_node; |
36536d79 BI |
3347 | star_seen = false; |
3348 | error_at (c_parser_peek_token (parser)->location, | |
3349 | "array notations cannot be used in declaration"); | |
3350 | c_parser_consume_token (parser); | |
3351 | } | |
27bf414c JM |
3352 | else if (c_parser_next_token_is (parser, CPP_MULT)) |
3353 | { | |
3354 | if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE) | |
3355 | { | |
267bac10 | 3356 | dimen.value = NULL_TREE; |
27bf414c JM |
3357 | star_seen = true; |
3358 | c_parser_consume_token (parser); | |
3359 | } | |
3360 | else | |
3361 | { | |
3362 | star_seen = false; | |
267bac10 | 3363 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3364 | } |
3365 | } | |
3366 | else | |
3367 | { | |
3368 | star_seen = false; | |
267bac10 | 3369 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3370 | } |
3371 | } | |
3372 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3373 | c_parser_consume_token (parser); | |
b72271b9 | 3374 | else if (flag_cilkplus |
36536d79 BI |
3375 | && c_parser_next_token_is (parser, CPP_COLON)) |
3376 | { | |
3377 | error_at (c_parser_peek_token (parser)->location, | |
3378 | "array notations cannot be used in declaration"); | |
3379 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
3380 | return NULL; | |
3381 | } | |
27bf414c JM |
3382 | else |
3383 | { | |
3384 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3385 | "expected %<]%>"); | |
3386 | return NULL; | |
3387 | } | |
267bac10 JM |
3388 | if (dimen.value) |
3389 | dimen = convert_lvalue_to_rvalue (brace_loc, dimen, true, true); | |
3390 | declarator = build_array_declarator (brace_loc, dimen.value, quals_attrs, | |
c2255bc4 | 3391 | static_seen, star_seen); |
52ffd86e MS |
3392 | if (declarator == NULL) |
3393 | return NULL; | |
6ac0194d | 3394 | inner = set_array_declarator_inner (declarator, inner); |
27bf414c JM |
3395 | return c_parser_direct_declarator_inner (parser, id_present, inner); |
3396 | } | |
3397 | else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3398 | { | |
3399 | tree attrs; | |
3400 | struct c_arg_info *args; | |
3401 | c_parser_consume_token (parser); | |
3402 | attrs = c_parser_attributes (parser); | |
3403 | args = c_parser_parms_declarator (parser, id_present, attrs); | |
3404 | if (args == NULL) | |
3405 | return NULL; | |
3406 | else | |
3407 | { | |
3408 | inner = build_function_declarator (args, inner); | |
3409 | return c_parser_direct_declarator_inner (parser, id_present, inner); | |
3410 | } | |
3411 | } | |
3412 | return inner; | |
3413 | } | |
3414 | ||
3415 | /* Parse a parameter list or identifier list, including the closing | |
3416 | parenthesis but not the opening one. ATTRS are the attributes at | |
3417 | the start of the list. ID_LIST_OK is true if an identifier list is | |
3418 | acceptable; such a list must not have attributes at the start. */ | |
3419 | ||
3420 | static struct c_arg_info * | |
3421 | c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs) | |
3422 | { | |
3423 | push_scope (); | |
3424 | declare_parm_level (); | |
3425 | /* If the list starts with an identifier, it is an identifier list. | |
3426 | Otherwise, it is either a prototype list or an empty list. */ | |
3427 | if (id_list_ok | |
3428 | && !attrs | |
3429 | && c_parser_next_token_is (parser, CPP_NAME) | |
29ce73cb PB |
3430 | && c_parser_peek_token (parser)->id_kind == C_ID_ID |
3431 | ||
3432 | /* Look ahead to detect typos in type names. */ | |
3433 | && c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
3434 | && c_parser_peek_2nd_token (parser)->type != CPP_MULT | |
3435 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
3436 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_SQUARE) | |
27bf414c | 3437 | { |
7fa3585c | 3438 | tree list = NULL_TREE, *nextp = &list; |
27bf414c JM |
3439 | while (c_parser_next_token_is (parser, CPP_NAME) |
3440 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
3441 | { | |
7fa3585c GK |
3442 | *nextp = build_tree_list (NULL_TREE, |
3443 | c_parser_peek_token (parser)->value); | |
3444 | nextp = & TREE_CHAIN (*nextp); | |
27bf414c JM |
3445 | c_parser_consume_token (parser); |
3446 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
3447 | break; | |
3448 | c_parser_consume_token (parser); | |
3449 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3450 | { | |
3451 | c_parser_error (parser, "expected identifier"); | |
3452 | break; | |
3453 | } | |
3454 | } | |
3455 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3456 | { | |
b3399d18 | 3457 | struct c_arg_info *ret = build_arg_info (); |
27bf414c | 3458 | ret->types = list; |
27bf414c JM |
3459 | c_parser_consume_token (parser); |
3460 | pop_scope (); | |
3461 | return ret; | |
3462 | } | |
3463 | else | |
3464 | { | |
3465 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3466 | "expected %<)%>"); | |
3467 | pop_scope (); | |
3468 | return NULL; | |
3469 | } | |
3470 | } | |
3471 | else | |
3472 | { | |
a04a722b JM |
3473 | struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs, |
3474 | NULL); | |
27bf414c JM |
3475 | pop_scope (); |
3476 | return ret; | |
3477 | } | |
3478 | } | |
3479 | ||
3480 | /* Parse a parameter list (possibly empty), including the closing | |
3481 | parenthesis but not the opening one. ATTRS are the attributes at | |
a04a722b JM |
3482 | the start of the list. EXPR is NULL or an expression that needs to |
3483 | be evaluated for the side effects of array size expressions in the | |
3484 | parameters. */ | |
27bf414c JM |
3485 | |
3486 | static struct c_arg_info * | |
a04a722b | 3487 | c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr) |
27bf414c | 3488 | { |
09a1e889 | 3489 | bool bad_parm = false; |
a04a722b | 3490 | |
27bf414c JM |
3491 | /* ??? Following the old parser, forward parameter declarations may |
3492 | use abstract declarators, and if no real parameter declarations | |
3493 | follow the forward declarations then this is not diagnosed. Also | |
3494 | note as above that attributes are ignored as the only contents of | |
3495 | the parentheses, or as the only contents after forward | |
3496 | declarations. */ | |
3497 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3498 | { | |
b3399d18 | 3499 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
3500 | c_parser_consume_token (parser); |
3501 | return ret; | |
3502 | } | |
3503 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3504 | { | |
b3399d18 | 3505 | struct c_arg_info *ret = build_arg_info (); |
6637388f TG |
3506 | |
3507 | if (flag_allow_parameterless_variadic_functions) | |
3508 | { | |
3509 | /* F (...) is allowed. */ | |
3510 | ret->types = NULL_TREE; | |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | /* Suppress -Wold-style-definition for this case. */ | |
3515 | ret->types = error_mark_node; | |
3516 | error_at (c_parser_peek_token (parser)->location, | |
3517 | "ISO C requires a named argument before %<...%>"); | |
3518 | } | |
27bf414c JM |
3519 | c_parser_consume_token (parser); |
3520 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3521 | { | |
3522 | c_parser_consume_token (parser); | |
3523 | return ret; | |
3524 | } | |
3525 | else | |
3526 | { | |
3527 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3528 | "expected %<)%>"); | |
3529 | return NULL; | |
3530 | } | |
3531 | } | |
3532 | /* Nonempty list of parameters, either terminated with semicolon | |
3533 | (forward declarations; recurse) or with close parenthesis (normal | |
3534 | function) or with ", ... )" (variadic function). */ | |
3535 | while (true) | |
3536 | { | |
3537 | /* Parse a parameter. */ | |
3538 | struct c_parm *parm = c_parser_parameter_declaration (parser, attrs); | |
3539 | attrs = NULL_TREE; | |
09a1e889 SZ |
3540 | if (parm == NULL) |
3541 | bad_parm = true; | |
3542 | else | |
a04a722b | 3543 | push_parm_decl (parm, &expr); |
27bf414c JM |
3544 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3545 | { | |
3546 | tree new_attrs; | |
3547 | c_parser_consume_token (parser); | |
91d975b8 | 3548 | mark_forward_parm_decls (); |
27bf414c | 3549 | new_attrs = c_parser_attributes (parser); |
a04a722b | 3550 | return c_parser_parms_list_declarator (parser, new_attrs, expr); |
27bf414c JM |
3551 | } |
3552 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3553 | { | |
3554 | c_parser_consume_token (parser); | |
09a1e889 | 3555 | if (bad_parm) |
a04a722b | 3556 | return NULL; |
09a1e889 | 3557 | else |
a04a722b | 3558 | return get_parm_info (false, expr); |
27bf414c JM |
3559 | } |
3560 | if (!c_parser_require (parser, CPP_COMMA, | |
3561 | "expected %<;%>, %<,%> or %<)%>")) | |
3562 | { | |
3563 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3564 | return NULL; | |
3565 | } | |
3566 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3567 | { | |
3568 | c_parser_consume_token (parser); | |
3569 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3570 | { | |
3571 | c_parser_consume_token (parser); | |
09a1e889 | 3572 | if (bad_parm) |
a04a722b | 3573 | return NULL; |
09a1e889 | 3574 | else |
a04a722b | 3575 | return get_parm_info (true, expr); |
27bf414c JM |
3576 | } |
3577 | else | |
3578 | { | |
3579 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3580 | "expected %<)%>"); | |
3581 | return NULL; | |
3582 | } | |
3583 | } | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | /* Parse a parameter declaration. ATTRS are the attributes at the | |
3588 | start of the declaration if it is the first parameter. */ | |
3589 | ||
3590 | static struct c_parm * | |
3591 | c_parser_parameter_declaration (c_parser *parser, tree attrs) | |
3592 | { | |
3593 | struct c_declspecs *specs; | |
3594 | struct c_declarator *declarator; | |
3595 | tree prefix_attrs; | |
3596 | tree postfix_attrs = NULL_TREE; | |
3597 | bool dummy = false; | |
51a1aacf TG |
3598 | |
3599 | /* Accept #pragmas between parameter declarations. */ | |
3600 | while (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
acf0174b | 3601 | c_parser_pragma (parser, pragma_param); |
51a1aacf | 3602 | |
27bf414c JM |
3603 | if (!c_parser_next_token_starts_declspecs (parser)) |
3604 | { | |
09a1e889 SZ |
3605 | c_token *token = c_parser_peek_token (parser); |
3606 | if (parser->error) | |
3607 | return NULL; | |
3608 | c_parser_set_source_position_from_token (token); | |
29ce73cb | 3609 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
09a1e889 | 3610 | { |
1c9f5f33 | 3611 | error_at (token->location, "unknown type name %qE", token->value); |
09a1e889 SZ |
3612 | parser->error = true; |
3613 | } | |
27bf414c JM |
3614 | /* ??? In some Objective-C cases '...' isn't applicable so there |
3615 | should be a different message. */ | |
09a1e889 SZ |
3616 | else |
3617 | c_parser_error (parser, | |
3618 | "expected declaration specifiers or %<...%>"); | |
27bf414c JM |
3619 | c_parser_skip_to_end_of_parameter (parser); |
3620 | return NULL; | |
3621 | } | |
3622 | specs = build_null_declspecs (); | |
3623 | if (attrs) | |
3624 | { | |
0b2c4be5 | 3625 | declspecs_add_attrs (input_location, specs, attrs); |
27bf414c JM |
3626 | attrs = NULL_TREE; |
3627 | } | |
38b7bc7f | 3628 | c_parser_declspecs (parser, specs, true, true, true, true, false, |
568a31f2 | 3629 | cla_nonabstract_decl); |
27bf414c JM |
3630 | finish_declspecs (specs); |
3631 | pending_xref_error (); | |
3632 | prefix_attrs = specs->attrs; | |
3633 | specs->attrs = NULL_TREE; | |
9e5b2115 PB |
3634 | declarator = c_parser_declarator (parser, |
3635 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3636 | C_DTR_PARM, &dummy); |
3637 | if (declarator == NULL) | |
3638 | { | |
3639 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
3640 | return NULL; | |
3641 | } | |
3642 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3643 | postfix_attrs = c_parser_attributes (parser); | |
3644 | return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs), | |
3645 | declarator); | |
3646 | } | |
3647 | ||
3648 | /* Parse a string literal in an asm expression. It should not be | |
3649 | translated, and wide string literals are an error although | |
3650 | permitted by the syntax. This is a GNU extension. | |
3651 | ||
3652 | asm-string-literal: | |
3653 | string-literal | |
3654 | ||
3655 | ??? At present, following the old parser, the caller needs to have | |
46c2514e TT |
3656 | set lex_untranslated_string to 1. It would be better to follow the |
3657 | C++ parser rather than using this kludge. */ | |
27bf414c JM |
3658 | |
3659 | static tree | |
3660 | c_parser_asm_string_literal (c_parser *parser) | |
3661 | { | |
3662 | tree str; | |
87f9e23d TT |
3663 | int save_flag = warn_overlength_strings; |
3664 | warn_overlength_strings = 0; | |
27bf414c JM |
3665 | if (c_parser_next_token_is (parser, CPP_STRING)) |
3666 | { | |
3667 | str = c_parser_peek_token (parser)->value; | |
3668 | c_parser_consume_token (parser); | |
3669 | } | |
3670 | else if (c_parser_next_token_is (parser, CPP_WSTRING)) | |
3671 | { | |
3ba09659 AH |
3672 | error_at (c_parser_peek_token (parser)->location, |
3673 | "wide string literal in %<asm%>"); | |
27bf414c JM |
3674 | str = build_string (1, ""); |
3675 | c_parser_consume_token (parser); | |
3676 | } | |
3677 | else | |
3678 | { | |
3679 | c_parser_error (parser, "expected string literal"); | |
3680 | str = NULL_TREE; | |
3681 | } | |
87f9e23d | 3682 | warn_overlength_strings = save_flag; |
27bf414c JM |
3683 | return str; |
3684 | } | |
3685 | ||
3686 | /* Parse a simple asm expression. This is used in restricted | |
3687 | contexts, where a full expression with inputs and outputs does not | |
3688 | make sense. This is a GNU extension. | |
3689 | ||
3690 | simple-asm-expr: | |
3691 | asm ( asm-string-literal ) | |
3692 | */ | |
3693 | ||
3694 | static tree | |
3695 | c_parser_simple_asm_expr (c_parser *parser) | |
3696 | { | |
3697 | tree str; | |
3698 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); | |
3699 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3700 | lex_untranslated_string kludge. */ |
3701 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3702 | c_parser_consume_token (parser); |
3703 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3704 | { | |
46c2514e | 3705 | parser->lex_untranslated_string = false; |
27bf414c JM |
3706 | return NULL_TREE; |
3707 | } | |
3708 | str = c_parser_asm_string_literal (parser); | |
46c2514e | 3709 | parser->lex_untranslated_string = false; |
27bf414c JM |
3710 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
3711 | { | |
3712 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3713 | return NULL_TREE; | |
3714 | } | |
3715 | return str; | |
3716 | } | |
3717 | ||
0a35513e AH |
3718 | static tree |
3719 | c_parser_attribute_any_word (c_parser *parser) | |
3720 | { | |
3721 | tree attr_name = NULL_TREE; | |
3722 | ||
3723 | if (c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3724 | { | |
3725 | /* ??? See comment above about what keywords are accepted here. */ | |
3726 | bool ok; | |
3727 | switch (c_parser_peek_token (parser)->keyword) | |
3728 | { | |
3729 | case RID_STATIC: | |
3730 | case RID_UNSIGNED: | |
3731 | case RID_LONG: | |
3732 | case RID_INT128: | |
3733 | case RID_CONST: | |
3734 | case RID_EXTERN: | |
3735 | case RID_REGISTER: | |
3736 | case RID_TYPEDEF: | |
3737 | case RID_SHORT: | |
3738 | case RID_INLINE: | |
3739 | case RID_NORETURN: | |
3740 | case RID_VOLATILE: | |
3741 | case RID_SIGNED: | |
3742 | case RID_AUTO: | |
3743 | case RID_RESTRICT: | |
3744 | case RID_COMPLEX: | |
3745 | case RID_THREAD: | |
3746 | case RID_INT: | |
3747 | case RID_CHAR: | |
3748 | case RID_FLOAT: | |
3749 | case RID_DOUBLE: | |
3750 | case RID_VOID: | |
3751 | case RID_DFLOAT32: | |
3752 | case RID_DFLOAT64: | |
3753 | case RID_DFLOAT128: | |
3754 | case RID_BOOL: | |
3755 | case RID_FRACT: | |
3756 | case RID_ACCUM: | |
3757 | case RID_SAT: | |
3758 | case RID_TRANSACTION_ATOMIC: | |
3759 | case RID_TRANSACTION_CANCEL: | |
267bac10 | 3760 | case RID_ATOMIC: |
38b7bc7f | 3761 | case RID_AUTO_TYPE: |
0a35513e AH |
3762 | ok = true; |
3763 | break; | |
3764 | default: | |
3765 | ok = false; | |
3766 | break; | |
3767 | } | |
3768 | if (!ok) | |
3769 | return NULL_TREE; | |
3770 | ||
3771 | /* Accept __attribute__((__const)) as __attribute__((const)) etc. */ | |
3772 | attr_name = ridpointers[(int) c_parser_peek_token (parser)->keyword]; | |
3773 | } | |
3774 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
3775 | attr_name = c_parser_peek_token (parser)->value; | |
3776 | ||
3777 | return attr_name; | |
3778 | } | |
3779 | ||
41958c28 BI |
3780 | /* Returns true of NAME is an IDENTIFIER_NODE with identiifer "vector," |
3781 | "__vector" or "__vector__." */ | |
3782 | ||
3783 | static inline bool | |
3784 | is_cilkplus_vector_p (tree name) | |
3785 | { | |
b72271b9 | 3786 | if (flag_cilkplus && is_attribute_p ("vector", name)) |
41958c28 BI |
3787 | return true; |
3788 | return false; | |
3789 | } | |
3790 | ||
3791 | #define CILK_SIMD_FN_CLAUSE_MASK \ | |
3792 | ((OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_VECTORLENGTH) \ | |
3793 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_LINEAR) \ | |
3794 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_UNIFORM) \ | |
3795 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_MASK) \ | |
3796 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_NOMASK)) | |
3797 | ||
3798 | /* Parses the vector attribute of SIMD enabled functions in Cilk Plus. | |
3799 | VEC_TOKEN is the "vector" token that is replaced with "simd" and | |
3800 | pushed into the token list. | |
3801 | Syntax: | |
3802 | vector | |
3803 | vector (<vector attributes>). */ | |
3804 | ||
3805 | static void | |
3806 | c_parser_cilk_simd_fn_vector_attrs (c_parser *parser, c_token vec_token) | |
3807 | { | |
3808 | gcc_assert (is_cilkplus_vector_p (vec_token.value)); | |
3809 | ||
3810 | int paren_scope = 0; | |
3811 | vec_safe_push (parser->cilk_simd_fn_tokens, vec_token); | |
3812 | /* Consume the "vector" token. */ | |
3813 | c_parser_consume_token (parser); | |
3814 | ||
3815 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3816 | { | |
3817 | c_parser_consume_token (parser); | |
3818 | paren_scope++; | |
3819 | } | |
3820 | while (paren_scope > 0) | |
3821 | { | |
3822 | c_token *token = c_parser_peek_token (parser); | |
3823 | if (token->type == CPP_OPEN_PAREN) | |
3824 | paren_scope++; | |
3825 | else if (token->type == CPP_CLOSE_PAREN) | |
3826 | paren_scope--; | |
3827 | /* Do not push the last ')' since we are not pushing the '('. */ | |
3828 | if (!(token->type == CPP_CLOSE_PAREN && paren_scope == 0)) | |
3829 | vec_safe_push (parser->cilk_simd_fn_tokens, *token); | |
3830 | c_parser_consume_token (parser); | |
3831 | } | |
3832 | ||
3833 | /* Since we are converting an attribute to a pragma, we need to end the | |
3834 | attribute with PRAGMA_EOL. */ | |
3835 | c_token eol_token; | |
3836 | memset (&eol_token, 0, sizeof (eol_token)); | |
3837 | eol_token.type = CPP_PRAGMA_EOL; | |
3838 | vec_safe_push (parser->cilk_simd_fn_tokens, eol_token); | |
3839 | } | |
3840 | ||
3841 | /* Add 2 CPP_EOF at the end of PARSER->ELEM_FN_TOKENS vector. */ | |
3842 | ||
3843 | static void | |
3844 | c_finish_cilk_simd_fn_tokens (c_parser *parser) | |
3845 | { | |
3846 | c_token last_token = parser->cilk_simd_fn_tokens->last (); | |
3847 | ||
3848 | /* c_parser_attributes is called in several places, so if these EOF | |
3849 | tokens are already inserted, then don't do them again. */ | |
3850 | if (last_token.type == CPP_EOF) | |
3851 | return; | |
3852 | ||
3853 | /* Two CPP_EOF token are added as a safety net since the normal C | |
3854 | front-end has two token look-ahead. */ | |
3855 | c_token eof_token; | |
3856 | eof_token.type = CPP_EOF; | |
3857 | vec_safe_push (parser->cilk_simd_fn_tokens, eof_token); | |
3858 | vec_safe_push (parser->cilk_simd_fn_tokens, eof_token); | |
3859 | } | |
3860 | ||
27bf414c JM |
3861 | /* Parse (possibly empty) attributes. This is a GNU extension. |
3862 | ||
3863 | attributes: | |
3864 | empty | |
3865 | attributes attribute | |
3866 | ||
3867 | attribute: | |
3868 | __attribute__ ( ( attribute-list ) ) | |
3869 | ||
3870 | attribute-list: | |
3871 | attrib | |
3872 | attribute_list , attrib | |
3873 | ||
3874 | attrib: | |
3875 | empty | |
3876 | any-word | |
3877 | any-word ( identifier ) | |
3878 | any-word ( identifier , nonempty-expr-list ) | |
3879 | any-word ( expr-list ) | |
3880 | ||
3881 | where the "identifier" must not be declared as a type, and | |
3882 | "any-word" may be any identifier (including one declared as a | |
3883 | type), a reserved word storage class specifier, type specifier or | |
3884 | type qualifier. ??? This still leaves out most reserved keywords | |
3885 | (following the old parser), shouldn't we include them, and why not | |
3886 | allow identifiers declared as types to start the arguments? */ | |
3887 | ||
3888 | static tree | |
3889 | c_parser_attributes (c_parser *parser) | |
3890 | { | |
3891 | tree attrs = NULL_TREE; | |
3892 | while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3893 | { | |
3894 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3895 | lex_untranslated_string kludge. */ |
3896 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3897 | c_parser_consume_token (parser); |
3898 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3899 | { | |
46c2514e | 3900 | parser->lex_untranslated_string = false; |
27bf414c JM |
3901 | return attrs; |
3902 | } | |
3903 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3904 | { | |
46c2514e | 3905 | parser->lex_untranslated_string = false; |
27bf414c JM |
3906 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
3907 | return attrs; | |
3908 | } | |
3909 | /* Parse the attribute list. */ | |
3910 | while (c_parser_next_token_is (parser, CPP_COMMA) | |
3911 | || c_parser_next_token_is (parser, CPP_NAME) | |
3912 | || c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3913 | { | |
3914 | tree attr, attr_name, attr_args; | |
9771b263 | 3915 | vec<tree, va_gc> *expr_list; |
27bf414c JM |
3916 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
3917 | { | |
3918 | c_parser_consume_token (parser); | |
3919 | continue; | |
3920 | } | |
0a35513e AH |
3921 | |
3922 | attr_name = c_parser_attribute_any_word (parser); | |
3923 | if (attr_name == NULL) | |
3924 | break; | |
41958c28 BI |
3925 | if (is_cilkplus_vector_p (attr_name)) |
3926 | { | |
3927 | c_token *v_token = c_parser_peek_token (parser); | |
3928 | c_parser_cilk_simd_fn_vector_attrs (parser, *v_token); | |
3929 | continue; | |
3930 | } | |
27bf414c JM |
3931 | c_parser_consume_token (parser); |
3932 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) | |
3933 | { | |
3934 | attr = build_tree_list (attr_name, NULL_TREE); | |
3935 | attrs = chainon (attrs, attr); | |
3936 | continue; | |
3937 | } | |
3938 | c_parser_consume_token (parser); | |
3939 | /* Parse the attribute contents. If they start with an | |
3940 | identifier which is followed by a comma or close | |
3941 | parenthesis, then the arguments start with that | |
91ebb981 IS |
3942 | identifier; otherwise they are an expression list. |
3943 | In objective-c the identifier may be a classname. */ | |
27bf414c | 3944 | if (c_parser_next_token_is (parser, CPP_NAME) |
91ebb981 IS |
3945 | && (c_parser_peek_token (parser)->id_kind == C_ID_ID |
3946 | || (c_dialect_objc () | |
3947 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3948 | && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA) |
3949 | || (c_parser_peek_2nd_token (parser)->type | |
3950 | == CPP_CLOSE_PAREN))) | |
3951 | { | |
3952 | tree arg1 = c_parser_peek_token (parser)->value; | |
3953 | c_parser_consume_token (parser); | |
3954 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3955 | attr_args = build_tree_list (NULL_TREE, arg1); | |
3956 | else | |
3957 | { | |
bbbbb16a | 3958 | tree tree_list; |
27bf414c | 3959 | c_parser_consume_token (parser); |
1a4049e7 | 3960 | expr_list = c_parser_expr_list (parser, false, true, |
81e5eca8 | 3961 | NULL, NULL, NULL, NULL); |
c166b898 | 3962 | tree_list = build_tree_list_vec (expr_list); |
bbbbb16a | 3963 | attr_args = tree_cons (NULL_TREE, arg1, tree_list); |
c166b898 | 3964 | release_tree_vector (expr_list); |
27bf414c JM |
3965 | } |
3966 | } | |
3967 | else | |
3968 | { | |
3969 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3970 | attr_args = NULL_TREE; | |
3971 | else | |
bbbbb16a | 3972 | { |
1a4049e7 | 3973 | expr_list = c_parser_expr_list (parser, false, true, |
81e5eca8 | 3974 | NULL, NULL, NULL, NULL); |
c166b898 ILT |
3975 | attr_args = build_tree_list_vec (expr_list); |
3976 | release_tree_vector (expr_list); | |
bbbbb16a | 3977 | } |
27bf414c JM |
3978 | } |
3979 | attr = build_tree_list (attr_name, attr_args); | |
3980 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3981 | c_parser_consume_token (parser); | |
3982 | else | |
3983 | { | |
46c2514e | 3984 | parser->lex_untranslated_string = false; |
27bf414c JM |
3985 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3986 | "expected %<)%>"); | |
3987 | return attrs; | |
3988 | } | |
3989 | attrs = chainon (attrs, attr); | |
3990 | } | |
3991 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3992 | c_parser_consume_token (parser); | |
3993 | else | |
3994 | { | |
46c2514e | 3995 | parser->lex_untranslated_string = false; |
27bf414c JM |
3996 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
3997 | "expected %<)%>"); | |
3998 | return attrs; | |
3999 | } | |
4000 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4001 | c_parser_consume_token (parser); | |
4002 | else | |
4003 | { | |
46c2514e | 4004 | parser->lex_untranslated_string = false; |
27bf414c JM |
4005 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
4006 | "expected %<)%>"); | |
4007 | return attrs; | |
4008 | } | |
46c2514e | 4009 | parser->lex_untranslated_string = false; |
27bf414c | 4010 | } |
41958c28 | 4011 | |
b72271b9 | 4012 | if (flag_cilkplus && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
41958c28 | 4013 | c_finish_cilk_simd_fn_tokens (parser); |
27bf414c JM |
4014 | return attrs; |
4015 | } | |
4016 | ||
4017 | /* Parse a type name (C90 6.5.5, C99 6.7.6). | |
4018 | ||
4019 | type-name: | |
4020 | specifier-qualifier-list abstract-declarator[opt] | |
4021 | */ | |
4022 | ||
4023 | static struct c_type_name * | |
4024 | c_parser_type_name (c_parser *parser) | |
4025 | { | |
4026 | struct c_declspecs *specs = build_null_declspecs (); | |
4027 | struct c_declarator *declarator; | |
4028 | struct c_type_name *ret; | |
4029 | bool dummy = false; | |
38b7bc7f | 4030 | c_parser_declspecs (parser, specs, false, true, true, false, false, |
568a31f2 | 4031 | cla_prefer_type); |
27bf414c JM |
4032 | if (!specs->declspecs_seen_p) |
4033 | { | |
4034 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
4035 | return NULL; | |
4036 | } | |
29ce73cb PB |
4037 | if (specs->type != error_mark_node) |
4038 | { | |
4039 | pending_xref_error (); | |
4040 | finish_declspecs (specs); | |
4041 | } | |
9e5b2115 PB |
4042 | declarator = c_parser_declarator (parser, |
4043 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
4044 | C_DTR_ABSTRACT, &dummy); |
4045 | if (declarator == NULL) | |
4046 | return NULL; | |
4047 | ret = XOBNEW (&parser_obstack, struct c_type_name); | |
4048 | ret->specs = specs; | |
4049 | ret->declarator = declarator; | |
4050 | return ret; | |
4051 | } | |
4052 | ||
4053 | /* Parse an initializer (C90 6.5.7, C99 6.7.8). | |
4054 | ||
4055 | initializer: | |
4056 | assignment-expression | |
4057 | { initializer-list } | |
4058 | { initializer-list , } | |
4059 | ||
4060 | initializer-list: | |
4061 | designation[opt] initializer | |
4062 | initializer-list , designation[opt] initializer | |
4063 | ||
4064 | designation: | |
4065 | designator-list = | |
4066 | ||
4067 | designator-list: | |
4068 | designator | |
4069 | designator-list designator | |
4070 | ||
4071 | designator: | |
4072 | array-designator | |
4073 | . identifier | |
4074 | ||
4075 | array-designator: | |
4076 | [ constant-expression ] | |
4077 | ||
4078 | GNU extensions: | |
4079 | ||
4080 | initializer: | |
4081 | { } | |
4082 | ||
4083 | designation: | |
4084 | array-designator | |
4085 | identifier : | |
4086 | ||
4087 | array-designator: | |
4088 | [ constant-expression ... constant-expression ] | |
4089 | ||
4090 | Any expression without commas is accepted in the syntax for the | |
4091 | constant-expressions, with non-constant expressions rejected later. | |
4092 | ||
4093 | This function is only used for top-level initializers; for nested | |
4094 | ones, see c_parser_initval. */ | |
4095 | ||
4096 | static struct c_expr | |
4097 | c_parser_initializer (c_parser *parser) | |
4098 | { | |
4099 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
4100 | return c_parser_braced_init (parser, NULL_TREE, false); | |
4101 | else | |
46bdb9cf JM |
4102 | { |
4103 | struct c_expr ret; | |
c2255bc4 | 4104 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
4105 | ret = c_parser_expr_no_commas (parser, NULL); |
4106 | if (TREE_CODE (ret.value) != STRING_CST | |
4107 | && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR) | |
267bac10 | 4108 | ret = convert_lvalue_to_rvalue (loc, ret, true, true); |
46bdb9cf JM |
4109 | return ret; |
4110 | } | |
27bf414c JM |
4111 | } |
4112 | ||
4113 | /* Parse a braced initializer list. TYPE is the type specified for a | |
4114 | compound literal, and NULL_TREE for other initializers and for | |
4115 | nested braced lists. NESTED_P is true for nested braced lists, | |
4116 | false for the list of a compound literal or the list that is the | |
4117 | top-level initializer in a declaration. */ | |
4118 | ||
4119 | static struct c_expr | |
4120 | c_parser_braced_init (c_parser *parser, tree type, bool nested_p) | |
4121 | { | |
a1e3b3d9 LB |
4122 | struct c_expr ret; |
4123 | struct obstack braced_init_obstack; | |
c7412148 | 4124 | location_t brace_loc = c_parser_peek_token (parser)->location; |
a1e3b3d9 | 4125 | gcc_obstack_init (&braced_init_obstack); |
27bf414c JM |
4126 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); |
4127 | c_parser_consume_token (parser); | |
4128 | if (nested_p) | |
a1e3b3d9 | 4129 | push_init_level (0, &braced_init_obstack); |
27bf414c JM |
4130 | else |
4131 | really_start_incremental_init (type); | |
4132 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4133 | { | |
c1771a20 | 4134 | pedwarn (brace_loc, OPT_Wpedantic, "ISO C forbids empty initializer braces"); |
27bf414c JM |
4135 | } |
4136 | else | |
4137 | { | |
4138 | /* Parse a non-empty initializer list, possibly with a trailing | |
4139 | comma. */ | |
4140 | while (true) | |
4141 | { | |
a1e3b3d9 | 4142 | c_parser_initelt (parser, &braced_init_obstack); |
27bf414c JM |
4143 | if (parser->error) |
4144 | break; | |
4145 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4146 | c_parser_consume_token (parser); | |
4147 | else | |
4148 | break; | |
4149 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4150 | break; | |
4151 | } | |
4152 | } | |
4153 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4154 | { | |
27bf414c JM |
4155 | ret.value = error_mark_node; |
4156 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 4157 | ret.original_type = NULL; |
27bf414c | 4158 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>"); |
a1e3b3d9 LB |
4159 | pop_init_level (0, &braced_init_obstack); |
4160 | obstack_free (&braced_init_obstack, NULL); | |
27bf414c JM |
4161 | return ret; |
4162 | } | |
4163 | c_parser_consume_token (parser); | |
a1e3b3d9 LB |
4164 | ret = pop_init_level (0, &braced_init_obstack); |
4165 | obstack_free (&braced_init_obstack, NULL); | |
4166 | return ret; | |
27bf414c JM |
4167 | } |
4168 | ||
4169 | /* Parse a nested initializer, including designators. */ | |
4170 | ||
4171 | static void | |
a1e3b3d9 | 4172 | c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack) |
27bf414c JM |
4173 | { |
4174 | /* Parse any designator or designator list. A single array | |
4175 | designator may have the subsequent "=" omitted in GNU C, but a | |
4176 | longer list or a structure member designator may not. */ | |
4177 | if (c_parser_next_token_is (parser, CPP_NAME) | |
4178 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
4179 | { | |
4180 | /* Old-style structure member designator. */ | |
a1e3b3d9 LB |
4181 | set_init_label (c_parser_peek_token (parser)->value, |
4182 | braced_init_obstack); | |
fcf73884 | 4183 | /* Use the colon as the error location. */ |
c1771a20 | 4184 | pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 4185 | "obsolete use of designated initializer with %<:%>"); |
27bf414c JM |
4186 | c_parser_consume_token (parser); |
4187 | c_parser_consume_token (parser); | |
4188 | } | |
4189 | else | |
4190 | { | |
4191 | /* des_seen is 0 if there have been no designators, 1 if there | |
4192 | has been a single array designator and 2 otherwise. */ | |
4193 | int des_seen = 0; | |
c7412148 | 4194 | /* Location of a designator. */ |
922f2908 | 4195 | location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4196 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE) |
4197 | || c_parser_next_token_is (parser, CPP_DOT)) | |
4198 | { | |
4199 | int des_prev = des_seen; | |
c7412148 TT |
4200 | if (!des_seen) |
4201 | des_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4202 | if (des_seen < 2) |
4203 | des_seen++; | |
4204 | if (c_parser_next_token_is (parser, CPP_DOT)) | |
4205 | { | |
4206 | des_seen = 2; | |
4207 | c_parser_consume_token (parser); | |
4208 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4209 | { | |
a1e3b3d9 LB |
4210 | set_init_label (c_parser_peek_token (parser)->value, |
4211 | braced_init_obstack); | |
27bf414c JM |
4212 | c_parser_consume_token (parser); |
4213 | } | |
4214 | else | |
4215 | { | |
4216 | struct c_expr init; | |
4217 | init.value = error_mark_node; | |
4218 | init.original_code = ERROR_MARK; | |
6866c6e8 | 4219 | init.original_type = NULL; |
27bf414c JM |
4220 | c_parser_error (parser, "expected identifier"); |
4221 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 4222 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
4223 | return; |
4224 | } | |
4225 | } | |
4226 | else | |
4227 | { | |
4228 | tree first, second; | |
922f2908 | 4229 | location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4230 | /* ??? Following the old parser, [ objc-receiver |
4231 | objc-message-args ] is accepted as an initializer, | |
4232 | being distinguished from a designator by what follows | |
4233 | the first assignment expression inside the square | |
4234 | brackets, but after a first array designator a | |
4235 | subsequent square bracket is for Objective-C taken to | |
4236 | start an expression, using the obsolete form of | |
4237 | designated initializer without '=', rather than | |
4238 | possibly being a second level of designation: in LALR | |
4239 | terms, the '[' is shifted rather than reducing | |
4240 | designator to designator-list. */ | |
4241 | if (des_prev == 1 && c_dialect_objc ()) | |
4242 | { | |
4243 | des_seen = des_prev; | |
4244 | break; | |
4245 | } | |
4246 | if (des_prev == 0 && c_dialect_objc ()) | |
4247 | { | |
4248 | /* This might be an array designator or an | |
4249 | Objective-C message expression. If the former, | |
4250 | continue parsing here; if the latter, parse the | |
4251 | remainder of the initializer given the starting | |
4252 | primary-expression. ??? It might make sense to | |
4253 | distinguish when des_prev == 1 as well; see | |
4254 | previous comment. */ | |
4255 | tree rec, args; | |
4256 | struct c_expr mexpr; | |
4257 | c_parser_consume_token (parser); | |
4258 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
4259 | && ((c_parser_peek_token (parser)->id_kind | |
4260 | == C_ID_TYPENAME) | |
4261 | || (c_parser_peek_token (parser)->id_kind | |
4262 | == C_ID_CLASSNAME))) | |
4263 | { | |
4264 | /* Type name receiver. */ | |
4265 | tree id = c_parser_peek_token (parser)->value; | |
4266 | c_parser_consume_token (parser); | |
4267 | rec = objc_get_class_reference (id); | |
4268 | goto parse_message_args; | |
4269 | } | |
4270 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 4271 | mark_exp_read (first); |
27bf414c JM |
4272 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS) |
4273 | || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
4274 | goto array_desig_after_first; | |
4275 | /* Expression receiver. So far only one part | |
4276 | without commas has been parsed; there might be | |
4277 | more of the expression. */ | |
4278 | rec = first; | |
4279 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
4280 | { | |
f2a71bbc | 4281 | struct c_expr next; |
c2255bc4 AH |
4282 | location_t comma_loc, exp_loc; |
4283 | comma_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 4284 | c_parser_consume_token (parser); |
c2255bc4 | 4285 | exp_loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 4286 | next = c_parser_expr_no_commas (parser, NULL); |
267bac10 JM |
4287 | next = convert_lvalue_to_rvalue (exp_loc, next, |
4288 | true, true); | |
c2255bc4 | 4289 | rec = build_compound_expr (comma_loc, rec, next.value); |
27bf414c JM |
4290 | } |
4291 | parse_message_args: | |
4292 | /* Now parse the objc-message-args. */ | |
4293 | args = c_parser_objc_message_args (parser); | |
4294 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
4295 | "expected %<]%>"); | |
4296 | mexpr.value | |
eb345401 | 4297 | = objc_build_message_expr (rec, args); |
27bf414c | 4298 | mexpr.original_code = ERROR_MARK; |
6866c6e8 | 4299 | mexpr.original_type = NULL; |
27bf414c JM |
4300 | /* Now parse and process the remainder of the |
4301 | initializer, starting with this message | |
4302 | expression as a primary-expression. */ | |
a1e3b3d9 | 4303 | c_parser_initval (parser, &mexpr, braced_init_obstack); |
27bf414c JM |
4304 | return; |
4305 | } | |
4306 | c_parser_consume_token (parser); | |
4307 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 4308 | mark_exp_read (first); |
27bf414c JM |
4309 | array_desig_after_first: |
4310 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4311 | { | |
c7412148 | 4312 | ellipsis_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4313 | c_parser_consume_token (parser); |
4314 | second = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 4315 | mark_exp_read (second); |
27bf414c JM |
4316 | } |
4317 | else | |
4318 | second = NULL_TREE; | |
4319 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
4320 | { | |
4321 | c_parser_consume_token (parser); | |
a1e3b3d9 | 4322 | set_init_index (first, second, braced_init_obstack); |
fcf73884 | 4323 | if (second) |
c1771a20 | 4324 | pedwarn (ellipsis_loc, OPT_Wpedantic, |
509c9d60 | 4325 | "ISO C forbids specifying range of elements to initialize"); |
27bf414c JM |
4326 | } |
4327 | else | |
4328 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
4329 | "expected %<]%>"); | |
4330 | } | |
4331 | } | |
4332 | if (des_seen >= 1) | |
4333 | { | |
4334 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
4335 | { | |
fcf73884 | 4336 | if (!flag_isoc99) |
c1771a20 | 4337 | pedwarn (des_loc, OPT_Wpedantic, |
509c9d60 | 4338 | "ISO C90 forbids specifying subobject to initialize"); |
27bf414c JM |
4339 | c_parser_consume_token (parser); |
4340 | } | |
4341 | else | |
4342 | { | |
4343 | if (des_seen == 1) | |
c1771a20 | 4344 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 4345 | "obsolete use of designated initializer without %<=%>"); |
27bf414c JM |
4346 | else |
4347 | { | |
4348 | struct c_expr init; | |
4349 | init.value = error_mark_node; | |
4350 | init.original_code = ERROR_MARK; | |
6866c6e8 | 4351 | init.original_type = NULL; |
27bf414c JM |
4352 | c_parser_error (parser, "expected %<=%>"); |
4353 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
a1e3b3d9 | 4354 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
4355 | return; |
4356 | } | |
4357 | } | |
4358 | } | |
4359 | } | |
a1e3b3d9 | 4360 | c_parser_initval (parser, NULL, braced_init_obstack); |
27bf414c JM |
4361 | } |
4362 | ||
4363 | /* Parse a nested initializer; as c_parser_initializer but parses | |
4364 | initializers within braced lists, after any designators have been | |
4365 | applied. If AFTER is not NULL then it is an Objective-C message | |
4366 | expression which is the primary-expression starting the | |
4367 | initializer. */ | |
4368 | ||
4369 | static void | |
a1e3b3d9 LB |
4370 | c_parser_initval (c_parser *parser, struct c_expr *after, |
4371 | struct obstack * braced_init_obstack) | |
27bf414c JM |
4372 | { |
4373 | struct c_expr init; | |
4374 | gcc_assert (!after || c_dialect_objc ()); | |
4375 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after) | |
4376 | init = c_parser_braced_init (parser, NULL_TREE, true); | |
4377 | else | |
46bdb9cf | 4378 | { |
c2255bc4 | 4379 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
4380 | init = c_parser_expr_no_commas (parser, after); |
4381 | if (init.value != NULL_TREE | |
4382 | && TREE_CODE (init.value) != STRING_CST | |
4383 | && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR) | |
267bac10 | 4384 | init = convert_lvalue_to_rvalue (loc, init, true, true); |
46bdb9cf | 4385 | } |
a1e3b3d9 | 4386 | process_init_element (init, false, braced_init_obstack); |
27bf414c JM |
4387 | } |
4388 | ||
4389 | /* Parse a compound statement (possibly a function body) (C90 6.6.2, | |
4390 | C99 6.8.2). | |
4391 | ||
4392 | compound-statement: | |
4393 | { block-item-list[opt] } | |
4394 | { label-declarations block-item-list } | |
4395 | ||
4396 | block-item-list: | |
4397 | block-item | |
4398 | block-item-list block-item | |
4399 | ||
4400 | block-item: | |
4401 | nested-declaration | |
4402 | statement | |
4403 | ||
4404 | nested-declaration: | |
4405 | declaration | |
4406 | ||
4407 | GNU extensions: | |
4408 | ||
4409 | compound-statement: | |
4410 | { label-declarations block-item-list } | |
4411 | ||
4412 | nested-declaration: | |
4413 | __extension__ nested-declaration | |
4414 | nested-function-definition | |
4415 | ||
4416 | label-declarations: | |
4417 | label-declaration | |
4418 | label-declarations label-declaration | |
4419 | ||
4420 | label-declaration: | |
4421 | __label__ identifier-list ; | |
4422 | ||
4423 | Allowing the mixing of declarations and code is new in C99. The | |
4424 | GNU syntax also permits (not shown above) labels at the end of | |
4425 | compound statements, which yield an error. We don't allow labels | |
4426 | on declarations; this might seem like a natural extension, but | |
4427 | there would be a conflict between attributes on the label and | |
4428 | prefix attributes on the declaration. ??? The syntax follows the | |
4429 | old parser in requiring something after label declarations. | |
4430 | Although they are erroneous if the labels declared aren't defined, | |
953ff289 | 4431 | is it useful for the syntax to be this way? |
b8698a0f | 4432 | |
953ff289 | 4433 | OpenMP: |
b8698a0f | 4434 | |
953ff289 DN |
4435 | block-item: |
4436 | openmp-directive | |
4437 | ||
4438 | openmp-directive: | |
4439 | barrier-directive | |
acf0174b JJ |
4440 | flush-directive |
4441 | taskwait-directive | |
4442 | taskyield-directive | |
4443 | cancel-directive | |
4444 | cancellation-point-directive */ | |
27bf414c JM |
4445 | |
4446 | static tree | |
4447 | c_parser_compound_statement (c_parser *parser) | |
4448 | { | |
4449 | tree stmt; | |
c2255bc4 AH |
4450 | location_t brace_loc; |
4451 | brace_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 4452 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
5600f233 JM |
4453 | { |
4454 | /* Ensure a scope is entered and left anyway to avoid confusion | |
4455 | if we have just prepared to enter a function body. */ | |
4456 | stmt = c_begin_compound_stmt (true); | |
c2255bc4 | 4457 | c_end_compound_stmt (brace_loc, stmt, true); |
5600f233 JM |
4458 | return error_mark_node; |
4459 | } | |
27bf414c JM |
4460 | stmt = c_begin_compound_stmt (true); |
4461 | c_parser_compound_statement_nostart (parser); | |
36536d79 BI |
4462 | |
4463 | /* If the compound stmt contains array notations, then we expand them. */ | |
b72271b9 | 4464 | if (flag_cilkplus && contains_array_notation_expr (stmt)) |
36536d79 | 4465 | stmt = expand_array_notation_exprs (stmt); |
c2255bc4 | 4466 | return c_end_compound_stmt (brace_loc, stmt, true); |
27bf414c JM |
4467 | } |
4468 | ||
4469 | /* Parse a compound statement except for the opening brace. This is | |
4470 | used for parsing both compound statements and statement expressions | |
4471 | (which follow different paths to handling the opening). */ | |
4472 | ||
4473 | static void | |
4474 | c_parser_compound_statement_nostart (c_parser *parser) | |
4475 | { | |
4476 | bool last_stmt = false; | |
4477 | bool last_label = false; | |
6ec637a4 | 4478 | bool save_valid_for_pragma = valid_location_for_stdc_pragma_p (); |
3ba09659 | 4479 | location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4480 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) |
4481 | { | |
4482 | c_parser_consume_token (parser); | |
4483 | return; | |
4484 | } | |
6ec637a4 | 4485 | mark_valid_location_for_stdc_pragma (true); |
27bf414c JM |
4486 | if (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4487 | { | |
4488 | /* Read zero or more forward-declarations for labels that nested | |
4489 | functions can jump to. */ | |
6ec637a4 | 4490 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4491 | while (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4492 | { | |
c2255bc4 | 4493 | label_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4494 | c_parser_consume_token (parser); |
4495 | /* Any identifiers, including those declared as type names, | |
4496 | are OK here. */ | |
4497 | while (true) | |
4498 | { | |
4499 | tree label; | |
4500 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
4501 | { | |
4502 | c_parser_error (parser, "expected identifier"); | |
4503 | break; | |
4504 | } | |
4505 | label | |
4506 | = declare_label (c_parser_peek_token (parser)->value); | |
4507 | C_DECLARED_LABEL_FLAG (label) = 1; | |
c2255bc4 | 4508 | add_stmt (build_stmt (label_loc, DECL_EXPR, label)); |
27bf414c JM |
4509 | c_parser_consume_token (parser); |
4510 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4511 | c_parser_consume_token (parser); | |
4512 | else | |
4513 | break; | |
4514 | } | |
4515 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4516 | } | |
c1771a20 | 4517 | pedwarn (label_loc, OPT_Wpedantic, "ISO C forbids label declarations"); |
27bf414c JM |
4518 | } |
4519 | /* We must now have at least one statement, label or declaration. */ | |
4520 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4521 | { | |
6ec637a4 | 4522 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
27bf414c JM |
4523 | c_parser_error (parser, "expected declaration or statement"); |
4524 | c_parser_consume_token (parser); | |
4525 | return; | |
4526 | } | |
4527 | while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4528 | { | |
4529 | location_t loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4530 | if (c_parser_next_token_is_keyword (parser, RID_CASE) |
4531 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4532 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4533 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4534 | { | |
c7412148 TT |
4535 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) |
4536 | label_loc = c_parser_peek_2nd_token (parser)->location; | |
4537 | else | |
4538 | label_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4539 | last_label = true; |
4540 | last_stmt = false; | |
6ec637a4 | 4541 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4542 | c_parser_label (parser); |
4543 | } | |
4544 | else if (!last_label | |
2f413185 | 4545 | && c_parser_next_tokens_start_declaration (parser)) |
27bf414c JM |
4546 | { |
4547 | last_label = false; | |
6ec637a4 | 4548 | mark_valid_location_for_stdc_pragma (false); |
acf0174b JJ |
4549 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
4550 | true, NULL, vNULL); | |
fcf73884 | 4551 | if (last_stmt) |
b8698a0f | 4552 | pedwarn_c90 (loc, |
509c9d60 | 4553 | (pedantic && !flag_isoc99) |
c1771a20 | 4554 | ? OPT_Wpedantic |
fcf73884 | 4555 | : OPT_Wdeclaration_after_statement, |
509c9d60 | 4556 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4557 | last_stmt = false; |
4558 | } | |
4559 | else if (!last_label | |
4560 | && c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4561 | { | |
4562 | /* __extension__ can start a declaration, but is also an | |
4563 | unary operator that can start an expression. Consume all | |
4564 | but the last of a possible series of __extension__ to | |
4565 | determine which. */ | |
4566 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4567 | && (c_parser_peek_2nd_token (parser)->keyword | |
4568 | == RID_EXTENSION)) | |
4569 | c_parser_consume_token (parser); | |
32912286 | 4570 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4571 | { |
4572 | int ext; | |
4573 | ext = disable_extension_diagnostics (); | |
4574 | c_parser_consume_token (parser); | |
4575 | last_label = false; | |
6ec637a4 | 4576 | mark_valid_location_for_stdc_pragma (false); |
32912286 | 4577 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
acf0174b | 4578 | true, NULL, vNULL); |
27bf414c JM |
4579 | /* Following the old parser, __extension__ does not |
4580 | disable this diagnostic. */ | |
4581 | restore_extension_diagnostics (ext); | |
fcf73884 | 4582 | if (last_stmt) |
509c9d60 | 4583 | pedwarn_c90 (loc, (pedantic && !flag_isoc99) |
c1771a20 | 4584 | ? OPT_Wpedantic |
fcf73884 | 4585 | : OPT_Wdeclaration_after_statement, |
509c9d60 | 4586 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4587 | last_stmt = false; |
4588 | } | |
4589 | else | |
4590 | goto statement; | |
4591 | } | |
bc4071dd RH |
4592 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
4593 | { | |
4594 | /* External pragmas, and some omp pragmas, are not associated | |
4595 | with regular c code, and so are not to be considered statements | |
4596 | syntactically. This ensures that the user doesn't put them | |
4597 | places that would turn into syntax errors if the directive | |
4598 | were ignored. */ | |
4599 | if (c_parser_pragma (parser, pragma_compound)) | |
4600 | last_label = false, last_stmt = true; | |
4601 | } | |
4602 | else if (c_parser_next_token_is (parser, CPP_EOF)) | |
4603 | { | |
6ec637a4 | 4604 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
bc4071dd RH |
4605 | c_parser_error (parser, "expected declaration or statement"); |
4606 | return; | |
4607 | } | |
b4b56033 MLI |
4608 | else if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4609 | { | |
b8698a0f | 4610 | if (parser->in_if_block) |
b4b56033 | 4611 | { |
6ec637a4 | 4612 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
3ba09659 | 4613 | error_at (loc, """expected %<}%> before %<else%>"); |
b4b56033 MLI |
4614 | return; |
4615 | } | |
b8698a0f | 4616 | else |
b4b56033 | 4617 | { |
3ba09659 | 4618 | error_at (loc, "%<else%> without a previous %<if%>"); |
b4b56033 MLI |
4619 | c_parser_consume_token (parser); |
4620 | continue; | |
4621 | } | |
4622 | } | |
27bf414c JM |
4623 | else |
4624 | { | |
4625 | statement: | |
4626 | last_label = false; | |
4627 | last_stmt = true; | |
6ec637a4 | 4628 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4629 | c_parser_statement_after_labels (parser); |
4630 | } | |
2c14ae9a VR |
4631 | |
4632 | parser->error = false; | |
27bf414c JM |
4633 | } |
4634 | if (last_label) | |
3ba09659 | 4635 | error_at (label_loc, "label at end of compound statement"); |
27bf414c | 4636 | c_parser_consume_token (parser); |
6ec637a4 JJ |
4637 | /* Restore the value we started with. */ |
4638 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); | |
27bf414c JM |
4639 | } |
4640 | ||
4641 | /* Parse a label (C90 6.6.1, C99 6.8.1). | |
4642 | ||
4643 | label: | |
4644 | identifier : attributes[opt] | |
4645 | case constant-expression : | |
4646 | default : | |
4647 | ||
4648 | GNU extensions: | |
4649 | ||
4650 | label: | |
4651 | case constant-expression ... constant-expression : | |
4652 | ||
4653 | The use of attributes on labels is a GNU extension. The syntax in | |
4654 | GNU C accepts any expressions without commas, non-constant | |
4655 | expressions being rejected later. */ | |
4656 | ||
4657 | static void | |
4658 | c_parser_label (c_parser *parser) | |
4659 | { | |
4660 | location_t loc1 = c_parser_peek_token (parser)->location; | |
4661 | tree label = NULL_TREE; | |
4662 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) | |
4663 | { | |
4664 | tree exp1, exp2; | |
4665 | c_parser_consume_token (parser); | |
4666 | exp1 = c_parser_expr_no_commas (parser, NULL).value; | |
4667 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
4668 | { | |
4669 | c_parser_consume_token (parser); | |
c2255bc4 | 4670 | label = do_case (loc1, exp1, NULL_TREE); |
27bf414c JM |
4671 | } |
4672 | else if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4673 | { | |
4674 | c_parser_consume_token (parser); | |
4675 | exp2 = c_parser_expr_no_commas (parser, NULL).value; | |
4676 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4677 | label = do_case (loc1, exp1, exp2); |
27bf414c JM |
4678 | } |
4679 | else | |
4680 | c_parser_error (parser, "expected %<:%> or %<...%>"); | |
4681 | } | |
4682 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
4683 | { | |
4684 | c_parser_consume_token (parser); | |
4685 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4686 | label = do_case (loc1, NULL_TREE, NULL_TREE); |
27bf414c JM |
4687 | } |
4688 | else | |
4689 | { | |
4690 | tree name = c_parser_peek_token (parser)->value; | |
4691 | tree tlab; | |
27bf414c | 4692 | tree attrs; |
c7412148 | 4693 | location_t loc2 = c_parser_peek_token (parser)->location; |
27bf414c JM |
4694 | gcc_assert (c_parser_next_token_is (parser, CPP_NAME)); |
4695 | c_parser_consume_token (parser); | |
4696 | gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); | |
27bf414c JM |
4697 | c_parser_consume_token (parser); |
4698 | attrs = c_parser_attributes (parser); | |
4699 | tlab = define_label (loc2, name); | |
4700 | if (tlab) | |
4701 | { | |
4702 | decl_attributes (&tlab, attrs, 0); | |
c2255bc4 | 4703 | label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab)); |
27bf414c JM |
4704 | } |
4705 | } | |
4706 | if (label) | |
3d57f0f0 | 4707 | { |
2f413185 | 4708 | if (c_parser_next_tokens_start_declaration (parser)) |
3d57f0f0 | 4709 | { |
3ba09659 AH |
4710 | error_at (c_parser_peek_token (parser)->location, |
4711 | "a label can only be part of a statement and " | |
4712 | "a declaration is not a statement"); | |
b8698a0f | 4713 | c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, |
32912286 | 4714 | /*static_assert_ok*/ true, |
6265d07c | 4715 | /*empty_ok*/ true, /*nested*/ true, |
acf0174b JJ |
4716 | /*start_attr_ok*/ true, NULL, |
4717 | vNULL); | |
3d57f0f0 MLI |
4718 | } |
4719 | } | |
27bf414c JM |
4720 | } |
4721 | ||
4722 | /* Parse a statement (C90 6.6, C99 6.8). | |
4723 | ||
4724 | statement: | |
4725 | labeled-statement | |
4726 | compound-statement | |
4727 | expression-statement | |
4728 | selection-statement | |
4729 | iteration-statement | |
4730 | jump-statement | |
4731 | ||
4732 | labeled-statement: | |
4733 | label statement | |
4734 | ||
4735 | expression-statement: | |
4736 | expression[opt] ; | |
4737 | ||
4738 | selection-statement: | |
4739 | if-statement | |
4740 | switch-statement | |
4741 | ||
4742 | iteration-statement: | |
4743 | while-statement | |
4744 | do-statement | |
4745 | for-statement | |
4746 | ||
4747 | jump-statement: | |
4748 | goto identifier ; | |
4749 | continue ; | |
4750 | break ; | |
4751 | return expression[opt] ; | |
4752 | ||
4753 | GNU extensions: | |
4754 | ||
4755 | statement: | |
4756 | asm-statement | |
4757 | ||
4758 | jump-statement: | |
4759 | goto * expression ; | |
4760 | ||
4761 | Objective-C: | |
4762 | ||
4763 | statement: | |
4764 | objc-throw-statement | |
4765 | objc-try-catch-statement | |
4766 | objc-synchronized-statement | |
4767 | ||
4768 | objc-throw-statement: | |
4769 | @throw expression ; | |
4770 | @throw ; | |
953ff289 DN |
4771 | |
4772 | OpenMP: | |
4773 | ||
4774 | statement: | |
4775 | openmp-construct | |
4776 | ||
4777 | openmp-construct: | |
4778 | parallel-construct | |
4779 | for-construct | |
acf0174b JJ |
4780 | simd-construct |
4781 | for-simd-construct | |
953ff289 DN |
4782 | sections-construct |
4783 | single-construct | |
4784 | parallel-for-construct | |
acf0174b | 4785 | parallel-for-simd-construct |
953ff289 DN |
4786 | parallel-sections-construct |
4787 | master-construct | |
4788 | critical-construct | |
4789 | atomic-construct | |
4790 | ordered-construct | |
4791 | ||
4792 | parallel-construct: | |
4793 | parallel-directive structured-block | |
4794 | ||
4795 | for-construct: | |
4796 | for-directive iteration-statement | |
4797 | ||
acf0174b JJ |
4798 | simd-construct: |
4799 | simd-directive iteration-statements | |
4800 | ||
4801 | for-simd-construct: | |
4802 | for-simd-directive iteration-statements | |
4803 | ||
953ff289 DN |
4804 | sections-construct: |
4805 | sections-directive section-scope | |
4806 | ||
4807 | single-construct: | |
4808 | single-directive structured-block | |
4809 | ||
4810 | parallel-for-construct: | |
4811 | parallel-for-directive iteration-statement | |
4812 | ||
acf0174b JJ |
4813 | parallel-for-simd-construct: |
4814 | parallel-for-simd-directive iteration-statement | |
4815 | ||
953ff289 DN |
4816 | parallel-sections-construct: |
4817 | parallel-sections-directive section-scope | |
4818 | ||
4819 | master-construct: | |
4820 | master-directive structured-block | |
4821 | ||
4822 | critical-construct: | |
4823 | critical-directive structured-block | |
4824 | ||
4825 | atomic-construct: | |
4826 | atomic-directive expression-statement | |
4827 | ||
4828 | ordered-construct: | |
0a35513e AH |
4829 | ordered-directive structured-block |
4830 | ||
4831 | Transactional Memory: | |
4832 | ||
4833 | statement: | |
4834 | transaction-statement | |
4835 | transaction-cancel-statement | |
4836 | */ | |
27bf414c JM |
4837 | |
4838 | static void | |
4839 | c_parser_statement (c_parser *parser) | |
4840 | { | |
4841 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4842 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4843 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4844 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4845 | c_parser_label (parser); | |
4846 | c_parser_statement_after_labels (parser); | |
4847 | } | |
4848 | ||
4849 | /* Parse a statement, other than a labeled statement. */ | |
4850 | ||
4851 | static void | |
4852 | c_parser_statement_after_labels (c_parser *parser) | |
4853 | { | |
4854 | location_t loc = c_parser_peek_token (parser)->location; | |
4855 | tree stmt = NULL_TREE; | |
b4b56033 MLI |
4856 | bool in_if_block = parser->in_if_block; |
4857 | parser->in_if_block = false; | |
27bf414c JM |
4858 | switch (c_parser_peek_token (parser)->type) |
4859 | { | |
4860 | case CPP_OPEN_BRACE: | |
4861 | add_stmt (c_parser_compound_statement (parser)); | |
4862 | break; | |
4863 | case CPP_KEYWORD: | |
4864 | switch (c_parser_peek_token (parser)->keyword) | |
4865 | { | |
4866 | case RID_IF: | |
4867 | c_parser_if_statement (parser); | |
4868 | break; | |
4869 | case RID_SWITCH: | |
4870 | c_parser_switch_statement (parser); | |
4871 | break; | |
4872 | case RID_WHILE: | |
d4af74d4 | 4873 | c_parser_while_statement (parser, false); |
27bf414c JM |
4874 | break; |
4875 | case RID_DO: | |
d4af74d4 | 4876 | c_parser_do_statement (parser, false); |
27bf414c JM |
4877 | break; |
4878 | case RID_FOR: | |
8170608b | 4879 | c_parser_for_statement (parser, false); |
27bf414c | 4880 | break; |
939b37da BI |
4881 | case RID_CILK_SYNC: |
4882 | c_parser_consume_token (parser); | |
4883 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
b72271b9 | 4884 | if (!flag_cilkplus) |
939b37da BI |
4885 | error_at (loc, "-fcilkplus must be enabled to use %<_Cilk_sync%>"); |
4886 | else | |
4887 | add_stmt (build_cilk_sync ()); | |
4888 | break; | |
27bf414c JM |
4889 | case RID_GOTO: |
4890 | c_parser_consume_token (parser); | |
4891 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4892 | { | |
c2255bc4 AH |
4893 | stmt = c_finish_goto_label (loc, |
4894 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4895 | c_parser_consume_token (parser); |
4896 | } | |
4897 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
4898 | { | |
267bac10 | 4899 | struct c_expr val; |
84628aa8 | 4900 | |
27bf414c | 4901 | c_parser_consume_token (parser); |
267bac10 JM |
4902 | val = c_parser_expression (parser); |
4903 | val = convert_lvalue_to_rvalue (loc, val, false, true); | |
4904 | stmt = c_finish_goto_ptr (loc, val.value); | |
27bf414c JM |
4905 | } |
4906 | else | |
4907 | c_parser_error (parser, "expected identifier or %<*%>"); | |
4908 | goto expect_semicolon; | |
4909 | case RID_CONTINUE: | |
4910 | c_parser_consume_token (parser); | |
c2255bc4 | 4911 | stmt = c_finish_bc_stmt (loc, &c_cont_label, false); |
27bf414c JM |
4912 | goto expect_semicolon; |
4913 | case RID_BREAK: | |
4914 | c_parser_consume_token (parser); | |
c2255bc4 | 4915 | stmt = c_finish_bc_stmt (loc, &c_break_label, true); |
27bf414c JM |
4916 | goto expect_semicolon; |
4917 | case RID_RETURN: | |
4918 | c_parser_consume_token (parser); | |
4919 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4920 | { | |
c2255bc4 | 4921 | stmt = c_finish_return (loc, NULL_TREE, NULL_TREE); |
27bf414c JM |
4922 | c_parser_consume_token (parser); |
4923 | } | |
4924 | else | |
4925 | { | |
bbbbb16a | 4926 | struct c_expr expr = c_parser_expression_conv (parser); |
ebfbbdc5 | 4927 | mark_exp_read (expr.value); |
c2255bc4 | 4928 | stmt = c_finish_return (loc, expr.value, expr.original_type); |
27bf414c JM |
4929 | goto expect_semicolon; |
4930 | } | |
4931 | break; | |
4932 | case RID_ASM: | |
4933 | stmt = c_parser_asm_statement (parser); | |
4934 | break; | |
0a35513e AH |
4935 | case RID_TRANSACTION_ATOMIC: |
4936 | case RID_TRANSACTION_RELAXED: | |
4937 | stmt = c_parser_transaction (parser, | |
4938 | c_parser_peek_token (parser)->keyword); | |
4939 | break; | |
4940 | case RID_TRANSACTION_CANCEL: | |
4941 | stmt = c_parser_transaction_cancel (parser); | |
4942 | goto expect_semicolon; | |
49b91f05 | 4943 | case RID_AT_THROW: |
27bf414c JM |
4944 | gcc_assert (c_dialect_objc ()); |
4945 | c_parser_consume_token (parser); | |
4946 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4947 | { | |
c2255bc4 | 4948 | stmt = objc_build_throw_stmt (loc, NULL_TREE); |
27bf414c JM |
4949 | c_parser_consume_token (parser); |
4950 | } | |
4951 | else | |
4952 | { | |
267bac10 JM |
4953 | struct c_expr expr = c_parser_expression (parser); |
4954 | expr = convert_lvalue_to_rvalue (loc, expr, false, false); | |
4955 | expr.value = c_fully_fold (expr.value, false, NULL); | |
4956 | stmt = objc_build_throw_stmt (loc, expr.value); | |
27bf414c JM |
4957 | goto expect_semicolon; |
4958 | } | |
4959 | break; | |
49b91f05 | 4960 | case RID_AT_TRY: |
27bf414c | 4961 | gcc_assert (c_dialect_objc ()); |
437c2322 | 4962 | c_parser_objc_try_catch_finally_statement (parser); |
27bf414c JM |
4963 | break; |
4964 | case RID_AT_SYNCHRONIZED: | |
4965 | gcc_assert (c_dialect_objc ()); | |
4966 | c_parser_objc_synchronized_statement (parser); | |
4967 | break; | |
4968 | default: | |
4969 | goto expr_stmt; | |
4970 | } | |
4971 | break; | |
4972 | case CPP_SEMICOLON: | |
4973 | c_parser_consume_token (parser); | |
4974 | break; | |
4975 | case CPP_CLOSE_PAREN: | |
4976 | case CPP_CLOSE_SQUARE: | |
4977 | /* Avoid infinite loop in error recovery: | |
4978 | c_parser_skip_until_found stops at a closing nesting | |
4979 | delimiter without consuming it, but here we need to consume | |
4980 | it to proceed further. */ | |
4981 | c_parser_error (parser, "expected statement"); | |
4982 | c_parser_consume_token (parser); | |
4983 | break; | |
bc4071dd RH |
4984 | case CPP_PRAGMA: |
4985 | c_parser_pragma (parser, pragma_stmt); | |
4986 | break; | |
27bf414c JM |
4987 | default: |
4988 | expr_stmt: | |
c2255bc4 | 4989 | stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value); |
27bf414c JM |
4990 | expect_semicolon: |
4991 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4992 | break; | |
4993 | } | |
4994 | /* Two cases cannot and do not have line numbers associated: If stmt | |
4995 | is degenerate, such as "2;", then stmt is an INTEGER_CST, which | |
4996 | cannot hold line numbers. But that's OK because the statement | |
4997 | will either be changed to a MODIFY_EXPR during gimplification of | |
4998 | the statement expr, or discarded. If stmt was compound, but | |
4999 | without new variables, we will have skipped the creation of a | |
5000 | BIND and will have a bare STATEMENT_LIST. But that's OK because | |
5001 | (recursively) all of the component statements should already have | |
5002 | line numbers assigned. ??? Can we discard no-op statements | |
5003 | earlier? */ | |
c2255bc4 AH |
5004 | if (CAN_HAVE_LOCATION_P (stmt) |
5005 | && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION) | |
5006 | SET_EXPR_LOCATION (stmt, loc); | |
b4b56033 MLI |
5007 | |
5008 | parser->in_if_block = in_if_block; | |
27bf414c JM |
5009 | } |
5010 | ||
ca085fd7 MLI |
5011 | /* Parse the condition from an if, do, while or for statements. */ |
5012 | ||
5013 | static tree | |
5014 | c_parser_condition (c_parser *parser) | |
5015 | { | |
c2255bc4 | 5016 | location_t loc = c_parser_peek_token (parser)->location; |
ca085fd7 | 5017 | tree cond; |
928c19bb JM |
5018 | cond = c_parser_expression_conv (parser).value; |
5019 | cond = c_objc_common_truthvalue_conversion (loc, cond); | |
5020 | cond = c_fully_fold (cond, false, NULL); | |
ca085fd7 MLI |
5021 | if (warn_sequence_point) |
5022 | verify_sequence_points (cond); | |
5023 | return cond; | |
5024 | } | |
5025 | ||
27bf414c JM |
5026 | /* Parse a parenthesized condition from an if, do or while statement. |
5027 | ||
5028 | condition: | |
5029 | ( expression ) | |
5030 | */ | |
5031 | static tree | |
5032 | c_parser_paren_condition (c_parser *parser) | |
5033 | { | |
27bf414c JM |
5034 | tree cond; |
5035 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
5036 | return error_mark_node; | |
ca085fd7 | 5037 | cond = c_parser_condition (parser); |
27bf414c JM |
5038 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5039 | return cond; | |
5040 | } | |
5041 | ||
5042 | /* Parse a statement which is a block in C99. */ | |
5043 | ||
5044 | static tree | |
5045 | c_parser_c99_block_statement (c_parser *parser) | |
5046 | { | |
5047 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 5048 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c | 5049 | c_parser_statement (parser); |
c2255bc4 | 5050 | return c_end_compound_stmt (loc, block, flag_isoc99); |
27bf414c JM |
5051 | } |
5052 | ||
b4b56033 MLI |
5053 | /* Parse the body of an if statement. This is just parsing a |
5054 | statement but (a) it is a block in C99, (b) we track whether the | |
5055 | body is an if statement for the sake of -Wparentheses warnings, (c) | |
5056 | we handle an empty body specially for the sake of -Wempty-body | |
5057 | warnings, and (d) we call parser_compound_statement directly | |
5058 | because c_parser_statement_after_labels resets | |
5059 | parser->in_if_block. */ | |
27bf414c JM |
5060 | |
5061 | static tree | |
5062 | c_parser_if_body (c_parser *parser, bool *if_p) | |
5063 | { | |
5064 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 5065 | location_t body_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
5066 | while (c_parser_next_token_is_keyword (parser, RID_CASE) |
5067 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
5068 | || (c_parser_next_token_is (parser, CPP_NAME) | |
5069 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
5070 | c_parser_label (parser); | |
5071 | *if_p = c_parser_next_token_is_keyword (parser, RID_IF); | |
62e00e94 | 5072 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
b4b56033 | 5073 | { |
626c34b5 | 5074 | location_t loc = c_parser_peek_token (parser)->location; |
c2255bc4 | 5075 | add_stmt (build_empty_stmt (loc)); |
b4b56033 | 5076 | c_parser_consume_token (parser); |
626c34b5 PB |
5077 | if (!c_parser_next_token_is_keyword (parser, RID_ELSE)) |
5078 | warning_at (loc, OPT_Wempty_body, | |
5079 | "suggest braces around empty body in an %<if%> statement"); | |
b4b56033 MLI |
5080 | } |
5081 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5082 | add_stmt (c_parser_compound_statement (parser)); | |
5083 | else | |
5084 | c_parser_statement_after_labels (parser); | |
c2255bc4 | 5085 | return c_end_compound_stmt (body_loc, block, flag_isoc99); |
b4b56033 MLI |
5086 | } |
5087 | ||
5088 | /* Parse the else body of an if statement. This is just parsing a | |
5089 | statement but (a) it is a block in C99, (b) we handle an empty body | |
5090 | specially for the sake of -Wempty-body warnings. */ | |
5091 | ||
5092 | static tree | |
5093 | c_parser_else_body (c_parser *parser) | |
5094 | { | |
c2255bc4 | 5095 | location_t else_loc = c_parser_peek_token (parser)->location; |
b4b56033 MLI |
5096 | tree block = c_begin_compound_stmt (flag_isoc99); |
5097 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
5098 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
5099 | || (c_parser_next_token_is (parser, CPP_NAME) | |
5100 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
5101 | c_parser_label (parser); | |
5102 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
5103 | { | |
c2255bc4 AH |
5104 | location_t loc = c_parser_peek_token (parser)->location; |
5105 | warning_at (loc, | |
626c34b5 PB |
5106 | OPT_Wempty_body, |
5107 | "suggest braces around empty body in an %<else%> statement"); | |
c2255bc4 | 5108 | add_stmt (build_empty_stmt (loc)); |
b4b56033 MLI |
5109 | c_parser_consume_token (parser); |
5110 | } | |
b8698a0f | 5111 | else |
b4b56033 | 5112 | c_parser_statement_after_labels (parser); |
c2255bc4 | 5113 | return c_end_compound_stmt (else_loc, block, flag_isoc99); |
27bf414c JM |
5114 | } |
5115 | ||
5116 | /* Parse an if statement (C90 6.6.4, C99 6.8.4). | |
5117 | ||
5118 | if-statement: | |
5119 | if ( expression ) statement | |
5120 | if ( expression ) statement else statement | |
5121 | */ | |
5122 | ||
5123 | static void | |
5124 | c_parser_if_statement (c_parser *parser) | |
5125 | { | |
5126 | tree block; | |
5127 | location_t loc; | |
5128 | tree cond; | |
b4b56033 | 5129 | bool first_if = false; |
27bf414c | 5130 | tree first_body, second_body; |
b4b56033 | 5131 | bool in_if_block; |
36536d79 | 5132 | tree if_stmt; |
b4b56033 | 5133 | |
27bf414c JM |
5134 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF)); |
5135 | c_parser_consume_token (parser); | |
5136 | block = c_begin_compound_stmt (flag_isoc99); | |
5137 | loc = c_parser_peek_token (parser)->location; | |
5138 | cond = c_parser_paren_condition (parser); | |
b4b56033 MLI |
5139 | in_if_block = parser->in_if_block; |
5140 | parser->in_if_block = true; | |
27bf414c | 5141 | first_body = c_parser_if_body (parser, &first_if); |
b4b56033 | 5142 | parser->in_if_block = in_if_block; |
27bf414c JM |
5143 | if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
5144 | { | |
5145 | c_parser_consume_token (parser); | |
b4b56033 | 5146 | second_body = c_parser_else_body (parser); |
27bf414c JM |
5147 | } |
5148 | else | |
5149 | second_body = NULL_TREE; | |
5150 | c_finish_if_stmt (loc, cond, first_body, second_body, first_if); | |
36536d79 BI |
5151 | if_stmt = c_end_compound_stmt (loc, block, flag_isoc99); |
5152 | ||
5153 | /* If the if statement contains array notations, then we expand them. */ | |
b72271b9 | 5154 | if (flag_cilkplus && contains_array_notation_expr (if_stmt)) |
36536d79 BI |
5155 | if_stmt = fix_conditional_array_notations (if_stmt); |
5156 | add_stmt (if_stmt); | |
27bf414c JM |
5157 | } |
5158 | ||
5159 | /* Parse a switch statement (C90 6.6.4, C99 6.8.4). | |
5160 | ||
5161 | switch-statement: | |
5162 | switch (expression) statement | |
5163 | */ | |
5164 | ||
5165 | static void | |
5166 | c_parser_switch_statement (c_parser *parser) | |
5167 | { | |
267bac10 | 5168 | struct c_expr ce; |
27bf414c | 5169 | tree block, expr, body, save_break; |
c2255bc4 AH |
5170 | location_t switch_loc = c_parser_peek_token (parser)->location; |
5171 | location_t switch_cond_loc; | |
27bf414c JM |
5172 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH)); |
5173 | c_parser_consume_token (parser); | |
5174 | block = c_begin_compound_stmt (flag_isoc99); | |
5175 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
5176 | { | |
c2255bc4 | 5177 | switch_cond_loc = c_parser_peek_token (parser)->location; |
267bac10 JM |
5178 | ce = c_parser_expression (parser); |
5179 | ce = convert_lvalue_to_rvalue (switch_cond_loc, ce, true, false); | |
5180 | expr = ce.value; | |
b72271b9 | 5181 | if (flag_cilkplus && contains_array_notation_expr (expr)) |
36536d79 BI |
5182 | { |
5183 | error_at (switch_cond_loc, | |
5184 | "array notations cannot be used as a condition for switch " | |
5185 | "statement"); | |
5186 | expr = error_mark_node; | |
5187 | } | |
27bf414c JM |
5188 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5189 | } | |
5190 | else | |
c2255bc4 AH |
5191 | { |
5192 | switch_cond_loc = UNKNOWN_LOCATION; | |
5193 | expr = error_mark_node; | |
5194 | } | |
5195 | c_start_case (switch_loc, switch_cond_loc, expr); | |
27bf414c JM |
5196 | save_break = c_break_label; |
5197 | c_break_label = NULL_TREE; | |
5198 | body = c_parser_c99_block_statement (parser); | |
5199 | c_finish_case (body); | |
5200 | if (c_break_label) | |
c2255bc4 AH |
5201 | { |
5202 | location_t here = c_parser_peek_token (parser)->location; | |
5203 | tree t = build1 (LABEL_EXPR, void_type_node, c_break_label); | |
5204 | SET_EXPR_LOCATION (t, here); | |
5205 | add_stmt (t); | |
5206 | } | |
27bf414c | 5207 | c_break_label = save_break; |
c2255bc4 | 5208 | add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99)); |
27bf414c JM |
5209 | } |
5210 | ||
5211 | /* Parse a while statement (C90 6.6.5, C99 6.8.5). | |
5212 | ||
5213 | while-statement: | |
5214 | while (expression) statement | |
5215 | */ | |
5216 | ||
5217 | static void | |
d4af74d4 | 5218 | c_parser_while_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5219 | { |
5220 | tree block, cond, body, save_break, save_cont; | |
5221 | location_t loc; | |
5222 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE)); | |
5223 | c_parser_consume_token (parser); | |
5224 | block = c_begin_compound_stmt (flag_isoc99); | |
5225 | loc = c_parser_peek_token (parser)->location; | |
5226 | cond = c_parser_paren_condition (parser); | |
b72271b9 | 5227 | if (flag_cilkplus && contains_array_notation_expr (cond)) |
36536d79 BI |
5228 | { |
5229 | error_at (loc, "array notations cannot be used as a condition for while " | |
5230 | "statement"); | |
5231 | cond = error_mark_node; | |
5232 | } | |
d4af74d4 TB |
5233 | |
5234 | if (ivdep && cond != error_mark_node) | |
5235 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5236 | build_int_cst (integer_type_node, | |
5237 | annot_expr_ivdep_kind)); | |
27bf414c JM |
5238 | save_break = c_break_label; |
5239 | c_break_label = NULL_TREE; | |
5240 | save_cont = c_cont_label; | |
5241 | c_cont_label = NULL_TREE; | |
5242 | body = c_parser_c99_block_statement (parser); | |
5243 | c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true); | |
c2255bc4 | 5244 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
5245 | c_break_label = save_break; |
5246 | c_cont_label = save_cont; | |
5247 | } | |
5248 | ||
5249 | /* Parse a do statement (C90 6.6.5, C99 6.8.5). | |
5250 | ||
5251 | do-statement: | |
5252 | do statement while ( expression ) ; | |
5253 | */ | |
5254 | ||
5255 | static void | |
d4af74d4 | 5256 | c_parser_do_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5257 | { |
5258 | tree block, cond, body, save_break, save_cont, new_break, new_cont; | |
5259 | location_t loc; | |
5260 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO)); | |
5261 | c_parser_consume_token (parser); | |
62e00e94 | 5262 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3ba09659 AH |
5263 | warning_at (c_parser_peek_token (parser)->location, |
5264 | OPT_Wempty_body, | |
5265 | "suggest braces around empty body in %<do%> statement"); | |
27bf414c JM |
5266 | block = c_begin_compound_stmt (flag_isoc99); |
5267 | loc = c_parser_peek_token (parser)->location; | |
5268 | save_break = c_break_label; | |
5269 | c_break_label = NULL_TREE; | |
5270 | save_cont = c_cont_label; | |
5271 | c_cont_label = NULL_TREE; | |
5272 | body = c_parser_c99_block_statement (parser); | |
5273 | c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>"); | |
5274 | new_break = c_break_label; | |
5275 | c_break_label = save_break; | |
5276 | new_cont = c_cont_label; | |
5277 | c_cont_label = save_cont; | |
5278 | cond = c_parser_paren_condition (parser); | |
b72271b9 | 5279 | if (flag_cilkplus && contains_array_notation_expr (cond)) |
36536d79 BI |
5280 | { |
5281 | error_at (loc, "array notations cannot be used as a condition for a " | |
5282 | "do-while statement"); | |
5283 | cond = error_mark_node; | |
5284 | } | |
d4af74d4 TB |
5285 | if (ivdep && cond != error_mark_node) |
5286 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5287 | build_int_cst (integer_type_node, | |
5288 | annot_expr_ivdep_kind)); | |
27bf414c JM |
5289 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5290 | c_parser_skip_to_end_of_block_or_statement (parser); | |
5291 | c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false); | |
c2255bc4 | 5292 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
5293 | } |
5294 | ||
5295 | /* Parse a for statement (C90 6.6.5, C99 6.8.5). | |
5296 | ||
5297 | for-statement: | |
5298 | for ( expression[opt] ; expression[opt] ; expression[opt] ) statement | |
5299 | for ( nested-declaration expression[opt] ; expression[opt] ) statement | |
5300 | ||
5301 | The form with a declaration is new in C99. | |
5302 | ||
5303 | ??? In accordance with the old parser, the declaration may be a | |
5304 | nested function, which is then rejected in check_for_loop_decls, | |
5305 | but does it make any sense for this to be included in the grammar? | |
5306 | Note in particular that the nested function does not include a | |
5307 | trailing ';', whereas the "declaration" production includes one. | |
5308 | Also, can we reject bad declarations earlier and cheaper than | |
f05b9d93 NP |
5309 | check_for_loop_decls? |
5310 | ||
5311 | In Objective-C, there are two additional variants: | |
5312 | ||
5313 | foreach-statement: | |
5314 | for ( expression in expresssion ) statement | |
5315 | for ( declaration in expression ) statement | |
5316 | ||
5317 | This is inconsistent with C, because the second variant is allowed | |
5318 | even if c99 is not enabled. | |
5319 | ||
5320 | The rest of the comment documents these Objective-C foreach-statement. | |
5321 | ||
5322 | Here is the canonical example of the first variant: | |
5323 | for (object in array) { do something with object } | |
5324 | we call the first expression ("object") the "object_expression" and | |
5325 | the second expression ("array") the "collection_expression". | |
5326 | object_expression must be an lvalue of type "id" (a generic Objective-C | |
5327 | object) because the loop works by assigning to object_expression the | |
5328 | various objects from the collection_expression. collection_expression | |
5329 | must evaluate to something of type "id" which responds to the method | |
5330 | countByEnumeratingWithState:objects:count:. | |
5331 | ||
5332 | The canonical example of the second variant is: | |
5333 | for (id object in array) { do something with object } | |
5334 | which is completely equivalent to | |
5335 | { | |
5336 | id object; | |
5337 | for (object in array) { do something with object } | |
5338 | } | |
5339 | Note that initizializing 'object' in some way (eg, "for ((object = | |
5340 | xxx) in array) { do something with object }") is possibly | |
5341 | technically valid, but completely pointless as 'object' will be | |
5342 | assigned to something else as soon as the loop starts. We should | |
5343 | most likely reject it (TODO). | |
5344 | ||
5345 | The beginning of the Objective-C foreach-statement looks exactly | |
5346 | like the beginning of the for-statement, and we can tell it is a | |
5347 | foreach-statement only because the initial declaration or | |
5348 | expression is terminated by 'in' instead of ';'. | |
5349 | */ | |
27bf414c JM |
5350 | |
5351 | static void | |
8170608b | 5352 | c_parser_for_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5353 | { |
5354 | tree block, cond, incr, save_break, save_cont, body; | |
f05b9d93 | 5355 | /* The following are only used when parsing an ObjC foreach statement. */ |
689f2c82 AO |
5356 | tree object_expression; |
5357 | /* Silence the bogus uninitialized warning. */ | |
5358 | tree collection_expression = NULL; | |
c2255bc4 AH |
5359 | location_t loc = c_parser_peek_token (parser)->location; |
5360 | location_t for_loc = c_parser_peek_token (parser)->location; | |
f05b9d93 | 5361 | bool is_foreach_statement = false; |
27bf414c JM |
5362 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR)); |
5363 | c_parser_consume_token (parser); | |
f05b9d93 NP |
5364 | /* Open a compound statement in Objective-C as well, just in case this is |
5365 | as foreach expression. */ | |
5366 | block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ()); | |
91b90ead UB |
5367 | cond = error_mark_node; |
5368 | incr = error_mark_node; | |
27bf414c JM |
5369 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5370 | { | |
5371 | /* Parse the initialization declaration or expression. */ | |
f05b9d93 | 5372 | object_expression = error_mark_node; |
a5812bdc | 5373 | parser->objc_could_be_foreach_context = c_dialect_objc (); |
27bf414c JM |
5374 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5375 | { | |
a5812bdc | 5376 | parser->objc_could_be_foreach_context = false; |
27bf414c | 5377 | c_parser_consume_token (parser); |
c2255bc4 | 5378 | c_finish_expr_stmt (loc, NULL_TREE); |
27bf414c | 5379 | } |
2f413185 | 5380 | else if (c_parser_next_tokens_start_declaration (parser)) |
27bf414c | 5381 | { |
f05b9d93 | 5382 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, |
acf0174b | 5383 | &object_expression, vNULL); |
f05b9d93 NP |
5384 | parser->objc_could_be_foreach_context = false; |
5385 | ||
5386 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
5387 | { | |
5388 | c_parser_consume_token (parser); | |
5389 | is_foreach_statement = true; | |
5390 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
5391 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
5392 | } | |
5393 | else | |
5394 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
5395 | } |
5396 | else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
5397 | { | |
5398 | /* __extension__ can start a declaration, but is also an | |
5399 | unary operator that can start an expression. Consume all | |
5400 | but the last of a possible series of __extension__ to | |
5401 | determine which. */ | |
5402 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
5403 | && (c_parser_peek_2nd_token (parser)->keyword | |
5404 | == RID_EXTENSION)) | |
5405 | c_parser_consume_token (parser); | |
32912286 | 5406 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
5407 | { |
5408 | int ext; | |
5409 | ext = disable_extension_diagnostics (); | |
5410 | c_parser_consume_token (parser); | |
32912286 | 5411 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
acf0174b | 5412 | true, &object_expression, vNULL); |
f05b9d93 NP |
5413 | parser->objc_could_be_foreach_context = false; |
5414 | ||
27bf414c | 5415 | restore_extension_diagnostics (ext); |
f05b9d93 NP |
5416 | if (c_parser_next_token_is_keyword (parser, RID_IN)) |
5417 | { | |
5418 | c_parser_consume_token (parser); | |
5419 | is_foreach_statement = true; | |
5420 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
5421 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
5422 | } | |
5423 | else | |
5424 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
5425 | } |
5426 | else | |
5427 | goto init_expr; | |
5428 | } | |
5429 | else | |
5430 | { | |
5431 | init_expr: | |
f05b9d93 | 5432 | { |
267bac10 | 5433 | struct c_expr ce; |
f05b9d93 | 5434 | tree init_expression; |
267bac10 JM |
5435 | ce = c_parser_expression (parser); |
5436 | init_expression = ce.value; | |
f05b9d93 NP |
5437 | parser->objc_could_be_foreach_context = false; |
5438 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
5439 | { | |
5440 | c_parser_consume_token (parser); | |
5441 | is_foreach_statement = true; | |
5442 | if (! lvalue_p (init_expression)) | |
5443 | c_parser_error (parser, "invalid iterating variable in fast enumeration"); | |
69a97201 | 5444 | object_expression = c_fully_fold (init_expression, false, NULL); |
f05b9d93 NP |
5445 | } |
5446 | else | |
5447 | { | |
267bac10 JM |
5448 | ce = convert_lvalue_to_rvalue (loc, ce, true, false); |
5449 | init_expression = ce.value; | |
f05b9d93 NP |
5450 | c_finish_expr_stmt (loc, init_expression); |
5451 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
5452 | } | |
5453 | } | |
27bf414c | 5454 | } |
f05b9d93 NP |
5455 | /* Parse the loop condition. In the case of a foreach |
5456 | statement, there is no loop condition. */ | |
a5812bdc | 5457 | gcc_assert (!parser->objc_could_be_foreach_context); |
f05b9d93 | 5458 | if (!is_foreach_statement) |
27bf414c | 5459 | { |
f05b9d93 NP |
5460 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5461 | { | |
8170608b TB |
5462 | if (ivdep) |
5463 | { | |
5464 | c_parser_error (parser, "missing loop condition in loop with " | |
5465 | "%<GCC ivdep%> pragma"); | |
5466 | cond = error_mark_node; | |
5467 | } | |
5468 | else | |
5469 | { | |
5470 | c_parser_consume_token (parser); | |
5471 | cond = NULL_TREE; | |
5472 | } | |
f05b9d93 NP |
5473 | } |
5474 | else | |
5475 | { | |
5476 | cond = c_parser_condition (parser); | |
b72271b9 | 5477 | if (flag_cilkplus && contains_array_notation_expr (cond)) |
36536d79 BI |
5478 | { |
5479 | error_at (loc, "array notations cannot be used in a " | |
5480 | "condition for a for-loop"); | |
5481 | cond = error_mark_node; | |
5482 | } | |
5483 | c_parser_skip_until_found (parser, CPP_SEMICOLON, | |
5484 | "expected %<;%>"); | |
f05b9d93 | 5485 | } |
8170608b TB |
5486 | if (ivdep && cond != error_mark_node) |
5487 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5488 | build_int_cst (integer_type_node, | |
5489 | annot_expr_ivdep_kind)); | |
27bf414c | 5490 | } |
f05b9d93 NP |
5491 | /* Parse the increment expression (the third expression in a |
5492 | for-statement). In the case of a foreach-statement, this is | |
5493 | the expression that follows the 'in'. */ | |
5494 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
27bf414c | 5495 | { |
f05b9d93 NP |
5496 | if (is_foreach_statement) |
5497 | { | |
5498 | c_parser_error (parser, "missing collection in fast enumeration"); | |
5499 | collection_expression = error_mark_node; | |
5500 | } | |
5501 | else | |
5502 | incr = c_process_expr_stmt (loc, NULL_TREE); | |
27bf414c | 5503 | } |
27bf414c | 5504 | else |
f05b9d93 NP |
5505 | { |
5506 | if (is_foreach_statement) | |
69a97201 NP |
5507 | collection_expression = c_fully_fold (c_parser_expression (parser).value, |
5508 | false, NULL); | |
f05b9d93 | 5509 | else |
267bac10 JM |
5510 | { |
5511 | struct c_expr ce = c_parser_expression (parser); | |
5512 | ce = convert_lvalue_to_rvalue (loc, ce, true, false); | |
5513 | incr = c_process_expr_stmt (loc, ce.value); | |
5514 | } | |
f05b9d93 | 5515 | } |
27bf414c JM |
5516 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5517 | } | |
27bf414c JM |
5518 | save_break = c_break_label; |
5519 | c_break_label = NULL_TREE; | |
5520 | save_cont = c_cont_label; | |
5521 | c_cont_label = NULL_TREE; | |
5522 | body = c_parser_c99_block_statement (parser); | |
f05b9d93 NP |
5523 | if (is_foreach_statement) |
5524 | objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label); | |
5525 | else | |
5526 | c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true); | |
5527 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ())); | |
27bf414c JM |
5528 | c_break_label = save_break; |
5529 | c_cont_label = save_cont; | |
5530 | } | |
5531 | ||
5532 | /* Parse an asm statement, a GNU extension. This is a full-blown asm | |
5533 | statement with inputs, outputs, clobbers, and volatile tag | |
5534 | allowed. | |
5535 | ||
5536 | asm-statement: | |
5537 | asm type-qualifier[opt] ( asm-argument ) ; | |
1c384bf1 | 5538 | asm type-qualifier[opt] goto ( asm-goto-argument ) ; |
27bf414c JM |
5539 | |
5540 | asm-argument: | |
5541 | asm-string-literal | |
5542 | asm-string-literal : asm-operands[opt] | |
5543 | asm-string-literal : asm-operands[opt] : asm-operands[opt] | |
1c384bf1 RH |
5544 | asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt] |
5545 | ||
5546 | asm-goto-argument: | |
5547 | asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \ | |
5548 | : asm-goto-operands | |
27bf414c JM |
5549 | |
5550 | Qualifiers other than volatile are accepted in the syntax but | |
5551 | warned for. */ | |
5552 | ||
5553 | static tree | |
5554 | c_parser_asm_statement (c_parser *parser) | |
5555 | { | |
1c384bf1 RH |
5556 | tree quals, str, outputs, inputs, clobbers, labels, ret; |
5557 | bool simple, is_goto; | |
c2255bc4 | 5558 | location_t asm_loc = c_parser_peek_token (parser)->location; |
1c384bf1 RH |
5559 | int section, nsections; |
5560 | ||
27bf414c JM |
5561 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); |
5562 | c_parser_consume_token (parser); | |
5563 | if (c_parser_next_token_is_keyword (parser, RID_VOLATILE)) | |
5564 | { | |
5565 | quals = c_parser_peek_token (parser)->value; | |
5566 | c_parser_consume_token (parser); | |
5567 | } | |
5568 | else if (c_parser_next_token_is_keyword (parser, RID_CONST) | |
5569 | || c_parser_next_token_is_keyword (parser, RID_RESTRICT)) | |
5570 | { | |
3ba09659 AH |
5571 | warning_at (c_parser_peek_token (parser)->location, |
5572 | 0, | |
5573 | "%E qualifier ignored on asm", | |
5574 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
5575 | quals = NULL_TREE; |
5576 | c_parser_consume_token (parser); | |
5577 | } | |
5578 | else | |
5579 | quals = NULL_TREE; | |
1c384bf1 RH |
5580 | |
5581 | is_goto = false; | |
5582 | if (c_parser_next_token_is_keyword (parser, RID_GOTO)) | |
5583 | { | |
5584 | c_parser_consume_token (parser); | |
5585 | is_goto = true; | |
5586 | } | |
5587 | ||
27bf414c | 5588 | /* ??? Follow the C++ parser rather than using the |
46c2514e TT |
5589 | lex_untranslated_string kludge. */ |
5590 | parser->lex_untranslated_string = true; | |
1c384bf1 RH |
5591 | ret = NULL; |
5592 | ||
27bf414c | 5593 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
1c384bf1 RH |
5594 | goto error; |
5595 | ||
27bf414c | 5596 | str = c_parser_asm_string_literal (parser); |
b85eb797 | 5597 | if (str == NULL_TREE) |
1c384bf1 RH |
5598 | goto error_close_paren; |
5599 | ||
5600 | simple = true; | |
5601 | outputs = NULL_TREE; | |
5602 | inputs = NULL_TREE; | |
5603 | clobbers = NULL_TREE; | |
5604 | labels = NULL_TREE; | |
5605 | ||
5606 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5607 | goto done_asm; | |
5608 | ||
5609 | /* Parse each colon-delimited section of operands. */ | |
5610 | nsections = 3 + is_goto; | |
5611 | for (section = 0; section < nsections; ++section) | |
b85eb797 | 5612 | { |
1c384bf1 RH |
5613 | if (!c_parser_require (parser, CPP_COLON, |
5614 | is_goto | |
5615 | ? "expected %<:%>" | |
5616 | : "expected %<:%> or %<)%>")) | |
5617 | goto error_close_paren; | |
5618 | ||
5619 | /* Once past any colon, we're no longer a simple asm. */ | |
5620 | simple = false; | |
5621 | ||
5622 | if ((!c_parser_next_token_is (parser, CPP_COLON) | |
5623 | && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
5624 | || section == 3) | |
5625 | switch (section) | |
5626 | { | |
5627 | case 0: | |
5628 | /* For asm goto, we don't allow output operands, but reserve | |
5629 | the slot for a future extension that does allow them. */ | |
5630 | if (!is_goto) | |
eadd3d0d | 5631 | outputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5632 | break; |
5633 | case 1: | |
eadd3d0d | 5634 | inputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5635 | break; |
5636 | case 2: | |
5637 | clobbers = c_parser_asm_clobbers (parser); | |
5638 | break; | |
5639 | case 3: | |
5640 | labels = c_parser_asm_goto_operands (parser); | |
5641 | break; | |
5642 | default: | |
5643 | gcc_unreachable (); | |
5644 | } | |
5645 | ||
5646 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5647 | goto done_asm; | |
27bf414c | 5648 | } |
1c384bf1 | 5649 | |
27bf414c | 5650 | done_asm: |
27bf414c JM |
5651 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5652 | { | |
5653 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
1c384bf1 | 5654 | goto error; |
27bf414c | 5655 | } |
1c384bf1 | 5656 | |
27bf414c JM |
5657 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5658 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1c384bf1 | 5659 | |
c2255bc4 | 5660 | ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs, |
1c384bf1 RH |
5661 | clobbers, labels, simple)); |
5662 | ||
5663 | error: | |
5664 | parser->lex_untranslated_string = false; | |
27bf414c | 5665 | return ret; |
1c384bf1 RH |
5666 | |
5667 | error_close_paren: | |
5668 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5669 | goto error; | |
27bf414c JM |
5670 | } |
5671 | ||
eadd3d0d | 5672 | /* Parse asm operands, a GNU extension. |
27bf414c JM |
5673 | |
5674 | asm-operands: | |
5675 | asm-operand | |
5676 | asm-operands , asm-operand | |
5677 | ||
5678 | asm-operand: | |
5679 | asm-string-literal ( expression ) | |
5680 | [ identifier ] asm-string-literal ( expression ) | |
5681 | */ | |
5682 | ||
5683 | static tree | |
eadd3d0d | 5684 | c_parser_asm_operands (c_parser *parser) |
27bf414c JM |
5685 | { |
5686 | tree list = NULL_TREE; | |
5687 | while (true) | |
5688 | { | |
f2a71bbc JM |
5689 | tree name, str; |
5690 | struct c_expr expr; | |
27bf414c JM |
5691 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) |
5692 | { | |
5693 | c_parser_consume_token (parser); | |
5694 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5695 | { | |
5696 | tree id = c_parser_peek_token (parser)->value; | |
5697 | c_parser_consume_token (parser); | |
5698 | name = build_string (IDENTIFIER_LENGTH (id), | |
5699 | IDENTIFIER_POINTER (id)); | |
5700 | } | |
5701 | else | |
5702 | { | |
5703 | c_parser_error (parser, "expected identifier"); | |
5704 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
5705 | return NULL_TREE; | |
5706 | } | |
5707 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
5708 | "expected %<]%>"); | |
5709 | } | |
5710 | else | |
5711 | name = NULL_TREE; | |
5712 | str = c_parser_asm_string_literal (parser); | |
5713 | if (str == NULL_TREE) | |
5714 | return NULL_TREE; | |
46c2514e | 5715 | parser->lex_untranslated_string = false; |
27bf414c JM |
5716 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5717 | { | |
46c2514e | 5718 | parser->lex_untranslated_string = true; |
27bf414c JM |
5719 | return NULL_TREE; |
5720 | } | |
f2a71bbc | 5721 | expr = c_parser_expression (parser); |
ebfbbdc5 | 5722 | mark_exp_read (expr.value); |
46c2514e | 5723 | parser->lex_untranslated_string = true; |
27bf414c JM |
5724 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5725 | { | |
5726 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5727 | return NULL_TREE; | |
5728 | } | |
5729 | list = chainon (list, build_tree_list (build_tree_list (name, str), | |
f2a71bbc | 5730 | expr.value)); |
27bf414c JM |
5731 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
5732 | c_parser_consume_token (parser); | |
5733 | else | |
5734 | break; | |
5735 | } | |
5736 | return list; | |
5737 | } | |
5738 | ||
5739 | /* Parse asm clobbers, a GNU extension. | |
5740 | ||
5741 | asm-clobbers: | |
5742 | asm-string-literal | |
5743 | asm-clobbers , asm-string-literal | |
5744 | */ | |
5745 | ||
5746 | static tree | |
5747 | c_parser_asm_clobbers (c_parser *parser) | |
5748 | { | |
5749 | tree list = NULL_TREE; | |
5750 | while (true) | |
5751 | { | |
5752 | tree str = c_parser_asm_string_literal (parser); | |
5753 | if (str) | |
5754 | list = tree_cons (NULL_TREE, str, list); | |
5755 | else | |
5756 | return NULL_TREE; | |
5757 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5758 | c_parser_consume_token (parser); | |
5759 | else | |
5760 | break; | |
5761 | } | |
5762 | return list; | |
5763 | } | |
5764 | ||
1c384bf1 | 5765 | /* Parse asm goto labels, a GNU extension. |
b8698a0f | 5766 | |
1c384bf1 RH |
5767 | asm-goto-operands: |
5768 | identifier | |
5769 | asm-goto-operands , identifier | |
5770 | */ | |
5771 | ||
5772 | static tree | |
5773 | c_parser_asm_goto_operands (c_parser *parser) | |
5774 | { | |
5775 | tree list = NULL_TREE; | |
5776 | while (true) | |
5777 | { | |
5778 | tree name, label; | |
5779 | ||
5780 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5781 | { | |
5782 | c_token *tok = c_parser_peek_token (parser); | |
5783 | name = tok->value; | |
5784 | label = lookup_label_for_goto (tok->location, name); | |
5785 | c_parser_consume_token (parser); | |
5786 | TREE_USED (label) = 1; | |
5787 | } | |
5788 | else | |
5789 | { | |
5790 | c_parser_error (parser, "expected identifier"); | |
5791 | return NULL_TREE; | |
5792 | } | |
5793 | ||
5794 | name = build_string (IDENTIFIER_LENGTH (name), | |
5795 | IDENTIFIER_POINTER (name)); | |
5796 | list = tree_cons (name, label, list); | |
5797 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5798 | c_parser_consume_token (parser); | |
5799 | else | |
5800 | return nreverse (list); | |
5801 | } | |
5802 | } | |
5803 | ||
27bf414c JM |
5804 | /* Parse an expression other than a compound expression; that is, an |
5805 | assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not | |
5806 | NULL then it is an Objective-C message expression which is the | |
5807 | primary-expression starting the expression as an initializer. | |
5808 | ||
5809 | assignment-expression: | |
5810 | conditional-expression | |
5811 | unary-expression assignment-operator assignment-expression | |
5812 | ||
5813 | assignment-operator: one of | |
5814 | = *= /= %= += -= <<= >>= &= ^= |= | |
5815 | ||
5816 | In GNU C we accept any conditional expression on the LHS and | |
5817 | diagnose the invalid lvalue rather than producing a syntax | |
5818 | error. */ | |
5819 | ||
5820 | static struct c_expr | |
acf0174b JJ |
5821 | c_parser_expr_no_commas (c_parser *parser, struct c_expr *after, |
5822 | tree omp_atomic_lhs) | |
27bf414c JM |
5823 | { |
5824 | struct c_expr lhs, rhs, ret; | |
5825 | enum tree_code code; | |
c2255bc4 | 5826 | location_t op_location, exp_location; |
27bf414c | 5827 | gcc_assert (!after || c_dialect_objc ()); |
acf0174b | 5828 | lhs = c_parser_conditional_expression (parser, after, omp_atomic_lhs); |
c9f9eb5d | 5829 | op_location = c_parser_peek_token (parser)->location; |
27bf414c JM |
5830 | switch (c_parser_peek_token (parser)->type) |
5831 | { | |
5832 | case CPP_EQ: | |
5833 | code = NOP_EXPR; | |
5834 | break; | |
5835 | case CPP_MULT_EQ: | |
5836 | code = MULT_EXPR; | |
5837 | break; | |
5838 | case CPP_DIV_EQ: | |
5839 | code = TRUNC_DIV_EXPR; | |
5840 | break; | |
5841 | case CPP_MOD_EQ: | |
5842 | code = TRUNC_MOD_EXPR; | |
5843 | break; | |
5844 | case CPP_PLUS_EQ: | |
5845 | code = PLUS_EXPR; | |
5846 | break; | |
5847 | case CPP_MINUS_EQ: | |
5848 | code = MINUS_EXPR; | |
5849 | break; | |
5850 | case CPP_LSHIFT_EQ: | |
5851 | code = LSHIFT_EXPR; | |
5852 | break; | |
5853 | case CPP_RSHIFT_EQ: | |
5854 | code = RSHIFT_EXPR; | |
5855 | break; | |
5856 | case CPP_AND_EQ: | |
5857 | code = BIT_AND_EXPR; | |
5858 | break; | |
5859 | case CPP_XOR_EQ: | |
5860 | code = BIT_XOR_EXPR; | |
5861 | break; | |
5862 | case CPP_OR_EQ: | |
5863 | code = BIT_IOR_EXPR; | |
5864 | break; | |
5865 | default: | |
5866 | return lhs; | |
5867 | } | |
5868 | c_parser_consume_token (parser); | |
c2255bc4 | 5869 | exp_location = c_parser_peek_token (parser)->location; |
27bf414c | 5870 | rhs = c_parser_expr_no_commas (parser, NULL); |
267bac10 | 5871 | rhs = convert_lvalue_to_rvalue (exp_location, rhs, true, true); |
36536d79 | 5872 | |
25c22937 BI |
5873 | ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type, |
5874 | code, exp_location, rhs.value, | |
5875 | rhs.original_type); | |
27bf414c JM |
5876 | if (code == NOP_EXPR) |
5877 | ret.original_code = MODIFY_EXPR; | |
5878 | else | |
5879 | { | |
5880 | TREE_NO_WARNING (ret.value) = 1; | |
5881 | ret.original_code = ERROR_MARK; | |
5882 | } | |
6866c6e8 | 5883 | ret.original_type = NULL; |
27bf414c JM |
5884 | return ret; |
5885 | } | |
5886 | ||
5887 | /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER | |
5888 | is not NULL then it is an Objective-C message expression which is | |
5889 | the primary-expression starting the expression as an initializer. | |
5890 | ||
5891 | conditional-expression: | |
5892 | logical-OR-expression | |
5893 | logical-OR-expression ? expression : conditional-expression | |
5894 | ||
5895 | GNU extensions: | |
5896 | ||
5897 | conditional-expression: | |
5898 | logical-OR-expression ? : conditional-expression | |
5899 | */ | |
5900 | ||
5901 | static struct c_expr | |
acf0174b JJ |
5902 | c_parser_conditional_expression (c_parser *parser, struct c_expr *after, |
5903 | tree omp_atomic_lhs) | |
27bf414c JM |
5904 | { |
5905 | struct c_expr cond, exp1, exp2, ret; | |
d166d4c3 | 5906 | location_t cond_loc, colon_loc, middle_loc; |
ba47d38d | 5907 | |
27bf414c | 5908 | gcc_assert (!after || c_dialect_objc ()); |
ba47d38d | 5909 | |
acf0174b | 5910 | cond = c_parser_binary_expression (parser, after, omp_atomic_lhs); |
ba47d38d | 5911 | |
27bf414c JM |
5912 | if (c_parser_next_token_is_not (parser, CPP_QUERY)) |
5913 | return cond; | |
c2255bc4 | 5914 | cond_loc = c_parser_peek_token (parser)->location; |
267bac10 | 5915 | cond = convert_lvalue_to_rvalue (cond_loc, cond, true, true); |
27bf414c JM |
5916 | c_parser_consume_token (parser); |
5917 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
5918 | { | |
8ce94e44 | 5919 | tree eptype = NULL_TREE; |
d166d4c3 AK |
5920 | |
5921 | middle_loc = c_parser_peek_token (parser)->location; | |
c1771a20 | 5922 | pedwarn (middle_loc, OPT_Wpedantic, |
509c9d60 | 5923 | "ISO C forbids omitting the middle term of a ?: expression"); |
d166d4c3 | 5924 | warn_for_omitted_condop (middle_loc, cond.value); |
8ce94e44 JM |
5925 | if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR) |
5926 | { | |
5927 | eptype = TREE_TYPE (cond.value); | |
5928 | cond.value = TREE_OPERAND (cond.value, 0); | |
5929 | } | |
27bf414c | 5930 | /* Make sure first operand is calculated only once. */ |
928c19bb | 5931 | exp1.value = c_save_expr (default_conversion (cond.value)); |
8ce94e44 JM |
5932 | if (eptype) |
5933 | exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value); | |
6866c6e8 | 5934 | exp1.original_type = NULL; |
ba47d38d | 5935 | cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value); |
7d882b83 | 5936 | c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node; |
27bf414c JM |
5937 | } |
5938 | else | |
5939 | { | |
5940 | cond.value | |
85498824 | 5941 | = c_objc_common_truthvalue_conversion |
ba47d38d | 5942 | (cond_loc, default_conversion (cond.value)); |
7d882b83 | 5943 | c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node; |
46bdb9cf | 5944 | exp1 = c_parser_expression_conv (parser); |
ebfbbdc5 | 5945 | mark_exp_read (exp1.value); |
7d882b83 ILT |
5946 | c_inhibit_evaluation_warnings += |
5947 | ((cond.value == truthvalue_true_node) | |
5948 | - (cond.value == truthvalue_false_node)); | |
27bf414c | 5949 | } |
744aa42f ILT |
5950 | |
5951 | colon_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
5952 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
5953 | { | |
7d882b83 | 5954 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
27bf414c JM |
5955 | ret.value = error_mark_node; |
5956 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 5957 | ret.original_type = NULL; |
27bf414c JM |
5958 | return ret; |
5959 | } | |
c2255bc4 AH |
5960 | { |
5961 | location_t exp2_loc = c_parser_peek_token (parser)->location; | |
acf0174b | 5962 | exp2 = c_parser_conditional_expression (parser, NULL, NULL_TREE); |
267bac10 | 5963 | exp2 = convert_lvalue_to_rvalue (exp2_loc, exp2, true, true); |
c2255bc4 | 5964 | } |
7d882b83 | 5965 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
744aa42f | 5966 | ret.value = build_conditional_expr (colon_loc, cond.value, |
928c19bb | 5967 | cond.original_code == C_MAYBE_CONST_EXPR, |
d130ae11 ILT |
5968 | exp1.value, exp1.original_type, |
5969 | exp2.value, exp2.original_type); | |
27bf414c | 5970 | ret.original_code = ERROR_MARK; |
6866c6e8 ILT |
5971 | if (exp1.value == error_mark_node || exp2.value == error_mark_node) |
5972 | ret.original_type = NULL; | |
5973 | else | |
5974 | { | |
5975 | tree t1, t2; | |
5976 | ||
5977 | /* If both sides are enum type, the default conversion will have | |
5978 | made the type of the result be an integer type. We want to | |
5979 | remember the enum types we started with. */ | |
5980 | t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value); | |
5981 | t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value); | |
5982 | ret.original_type = ((t1 != error_mark_node | |
5983 | && t2 != error_mark_node | |
5984 | && (TYPE_MAIN_VARIANT (t1) | |
5985 | == TYPE_MAIN_VARIANT (t2))) | |
5986 | ? t1 | |
5987 | : NULL); | |
5988 | } | |
27bf414c JM |
5989 | return ret; |
5990 | } | |
5991 | ||
5992 | /* Parse a binary expression; that is, a logical-OR-expression (C90 | |
5993 | 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is | |
5994 | an Objective-C message expression which is the primary-expression | |
acf0174b JJ |
5995 | starting the expression as an initializer. |
5996 | ||
5997 | OMP_ATOMIC_LHS is NULL, unless parsing OpenMP #pragma omp atomic, | |
5998 | when it should be the unfolded lhs. In a valid OpenMP source, | |
5999 | one of the operands of the toplevel binary expression must be equal | |
6000 | to it. In that case, just return a build2 created binary operation | |
6001 | rather than result of parser_build_binary_op. | |
27bf414c JM |
6002 | |
6003 | multiplicative-expression: | |
6004 | cast-expression | |
6005 | multiplicative-expression * cast-expression | |
6006 | multiplicative-expression / cast-expression | |
6007 | multiplicative-expression % cast-expression | |
6008 | ||
6009 | additive-expression: | |
6010 | multiplicative-expression | |
6011 | additive-expression + multiplicative-expression | |
6012 | additive-expression - multiplicative-expression | |
6013 | ||
6014 | shift-expression: | |
6015 | additive-expression | |
6016 | shift-expression << additive-expression | |
6017 | shift-expression >> additive-expression | |
6018 | ||
6019 | relational-expression: | |
6020 | shift-expression | |
6021 | relational-expression < shift-expression | |
6022 | relational-expression > shift-expression | |
6023 | relational-expression <= shift-expression | |
6024 | relational-expression >= shift-expression | |
6025 | ||
6026 | equality-expression: | |
6027 | relational-expression | |
6028 | equality-expression == relational-expression | |
6029 | equality-expression != relational-expression | |
6030 | ||
6031 | AND-expression: | |
6032 | equality-expression | |
6033 | AND-expression & equality-expression | |
6034 | ||
6035 | exclusive-OR-expression: | |
6036 | AND-expression | |
6037 | exclusive-OR-expression ^ AND-expression | |
6038 | ||
6039 | inclusive-OR-expression: | |
6040 | exclusive-OR-expression | |
6041 | inclusive-OR-expression | exclusive-OR-expression | |
6042 | ||
6043 | logical-AND-expression: | |
6044 | inclusive-OR-expression | |
6045 | logical-AND-expression && inclusive-OR-expression | |
6046 | ||
6047 | logical-OR-expression: | |
6048 | logical-AND-expression | |
6049 | logical-OR-expression || logical-AND-expression | |
6050 | */ | |
6051 | ||
6052 | static struct c_expr | |
20906c66 | 6053 | c_parser_binary_expression (c_parser *parser, struct c_expr *after, |
acf0174b | 6054 | tree omp_atomic_lhs) |
27bf414c JM |
6055 | { |
6056 | /* A binary expression is parsed using operator-precedence parsing, | |
6057 | with the operands being cast expressions. All the binary | |
6058 | operators are left-associative. Thus a binary expression is of | |
6059 | form: | |
6060 | ||
6061 | E0 op1 E1 op2 E2 ... | |
6062 | ||
6063 | which we represent on a stack. On the stack, the precedence | |
6064 | levels are strictly increasing. When a new operator is | |
6065 | encountered of higher precedence than that at the top of the | |
6066 | stack, it is pushed; its LHS is the top expression, and its RHS | |
6067 | is everything parsed until it is popped. When a new operator is | |
6068 | encountered with precedence less than or equal to that at the top | |
6069 | of the stack, triples E[i-1] op[i] E[i] are popped and replaced | |
6070 | by the result of the operation until the operator at the top of | |
6071 | the stack has lower precedence than the new operator or there is | |
6072 | only one element on the stack; then the top expression is the LHS | |
6073 | of the new operator. In the case of logical AND and OR | |
7d882b83 ILT |
6074 | expressions, we also need to adjust c_inhibit_evaluation_warnings |
6075 | as appropriate when the operators are pushed and popped. */ | |
27bf414c | 6076 | |
27bf414c JM |
6077 | struct { |
6078 | /* The expression at this stack level. */ | |
6079 | struct c_expr expr; | |
6080 | /* The precedence of the operator on its left, PREC_NONE at the | |
6081 | bottom of the stack. */ | |
20906c66 | 6082 | enum c_parser_prec prec; |
27bf414c JM |
6083 | /* The operation on its left. */ |
6084 | enum tree_code op; | |
ca80e52b EB |
6085 | /* The source location of this operation. */ |
6086 | location_t loc; | |
27bf414c JM |
6087 | } stack[NUM_PRECS]; |
6088 | int sp; | |
ba47d38d | 6089 | /* Location of the binary operator. */ |
1f6d0c60 | 6090 | location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
6091 | #define POP \ |
6092 | do { \ | |
6093 | switch (stack[sp].op) \ | |
6094 | { \ | |
6095 | case TRUTH_ANDIF_EXPR: \ | |
7d882b83 ILT |
6096 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
6097 | == truthvalue_false_node); \ | |
27bf414c JM |
6098 | break; \ |
6099 | case TRUTH_ORIF_EXPR: \ | |
7d882b83 ILT |
6100 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
6101 | == truthvalue_true_node); \ | |
27bf414c JM |
6102 | break; \ |
6103 | default: \ | |
6104 | break; \ | |
6105 | } \ | |
f2a71bbc | 6106 | stack[sp - 1].expr \ |
267bac10 JM |
6107 | = convert_lvalue_to_rvalue (stack[sp - 1].loc, \ |
6108 | stack[sp - 1].expr, true, true); \ | |
f2a71bbc | 6109 | stack[sp].expr \ |
267bac10 JM |
6110 | = convert_lvalue_to_rvalue (stack[sp].loc, \ |
6111 | stack[sp].expr, true, true); \ | |
acf0174b JJ |
6112 | if (__builtin_expect (omp_atomic_lhs != NULL_TREE, 0) && sp == 1 \ |
6113 | && c_parser_peek_token (parser)->type == CPP_SEMICOLON \ | |
6114 | && ((1 << stack[sp].prec) \ | |
6115 | & (1 << (PREC_BITOR | PREC_BITXOR | PREC_BITAND | PREC_SHIFT \ | |
6116 | | PREC_ADD | PREC_MULT))) \ | |
6117 | && stack[sp].op != TRUNC_MOD_EXPR \ | |
6118 | && stack[0].expr.value != error_mark_node \ | |
6119 | && stack[1].expr.value != error_mark_node \ | |
6120 | && (c_tree_equal (stack[0].expr.value, omp_atomic_lhs) \ | |
6121 | || c_tree_equal (stack[1].expr.value, omp_atomic_lhs))) \ | |
6122 | stack[0].expr.value \ | |
6123 | = build2 (stack[1].op, TREE_TYPE (stack[0].expr.value), \ | |
6124 | stack[0].expr.value, stack[1].expr.value); \ | |
6125 | else \ | |
6126 | stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \ | |
6127 | stack[sp].op, \ | |
6128 | stack[sp - 1].expr, \ | |
6129 | stack[sp].expr); \ | |
27bf414c JM |
6130 | sp--; \ |
6131 | } while (0) | |
6132 | gcc_assert (!after || c_dialect_objc ()); | |
ca80e52b | 6133 | stack[0].loc = c_parser_peek_token (parser)->location; |
27bf414c | 6134 | stack[0].expr = c_parser_cast_expression (parser, after); |
acf0174b | 6135 | stack[0].prec = PREC_NONE; |
27bf414c JM |
6136 | sp = 0; |
6137 | while (true) | |
6138 | { | |
20906c66 | 6139 | enum c_parser_prec oprec; |
27bf414c JM |
6140 | enum tree_code ocode; |
6141 | if (parser->error) | |
6142 | goto out; | |
6143 | switch (c_parser_peek_token (parser)->type) | |
6144 | { | |
6145 | case CPP_MULT: | |
6146 | oprec = PREC_MULT; | |
6147 | ocode = MULT_EXPR; | |
6148 | break; | |
6149 | case CPP_DIV: | |
6150 | oprec = PREC_MULT; | |
6151 | ocode = TRUNC_DIV_EXPR; | |
6152 | break; | |
6153 | case CPP_MOD: | |
6154 | oprec = PREC_MULT; | |
6155 | ocode = TRUNC_MOD_EXPR; | |
6156 | break; | |
6157 | case CPP_PLUS: | |
6158 | oprec = PREC_ADD; | |
6159 | ocode = PLUS_EXPR; | |
6160 | break; | |
6161 | case CPP_MINUS: | |
6162 | oprec = PREC_ADD; | |
6163 | ocode = MINUS_EXPR; | |
6164 | break; | |
6165 | case CPP_LSHIFT: | |
6166 | oprec = PREC_SHIFT; | |
6167 | ocode = LSHIFT_EXPR; | |
6168 | break; | |
6169 | case CPP_RSHIFT: | |
6170 | oprec = PREC_SHIFT; | |
6171 | ocode = RSHIFT_EXPR; | |
6172 | break; | |
6173 | case CPP_LESS: | |
6174 | oprec = PREC_REL; | |
6175 | ocode = LT_EXPR; | |
6176 | break; | |
6177 | case CPP_GREATER: | |
6178 | oprec = PREC_REL; | |
6179 | ocode = GT_EXPR; | |
6180 | break; | |
6181 | case CPP_LESS_EQ: | |
6182 | oprec = PREC_REL; | |
6183 | ocode = LE_EXPR; | |
6184 | break; | |
6185 | case CPP_GREATER_EQ: | |
6186 | oprec = PREC_REL; | |
6187 | ocode = GE_EXPR; | |
6188 | break; | |
6189 | case CPP_EQ_EQ: | |
6190 | oprec = PREC_EQ; | |
6191 | ocode = EQ_EXPR; | |
6192 | break; | |
6193 | case CPP_NOT_EQ: | |
6194 | oprec = PREC_EQ; | |
6195 | ocode = NE_EXPR; | |
6196 | break; | |
6197 | case CPP_AND: | |
6198 | oprec = PREC_BITAND; | |
6199 | ocode = BIT_AND_EXPR; | |
6200 | break; | |
6201 | case CPP_XOR: | |
6202 | oprec = PREC_BITXOR; | |
6203 | ocode = BIT_XOR_EXPR; | |
6204 | break; | |
6205 | case CPP_OR: | |
6206 | oprec = PREC_BITOR; | |
6207 | ocode = BIT_IOR_EXPR; | |
6208 | break; | |
6209 | case CPP_AND_AND: | |
6210 | oprec = PREC_LOGAND; | |
6211 | ocode = TRUTH_ANDIF_EXPR; | |
6212 | break; | |
6213 | case CPP_OR_OR: | |
6214 | oprec = PREC_LOGOR; | |
6215 | ocode = TRUTH_ORIF_EXPR; | |
6216 | break; | |
6217 | default: | |
6218 | /* Not a binary operator, so end of the binary | |
6219 | expression. */ | |
6220 | goto out; | |
6221 | } | |
ba47d38d | 6222 | binary_loc = c_parser_peek_token (parser)->location; |
27bf414c | 6223 | while (oprec <= stack[sp].prec) |
acf0174b | 6224 | POP; |
20906c66 | 6225 | c_parser_consume_token (parser); |
27bf414c JM |
6226 | switch (ocode) |
6227 | { | |
6228 | case TRUTH_ANDIF_EXPR: | |
f2a71bbc | 6229 | stack[sp].expr |
267bac10 JM |
6230 | = convert_lvalue_to_rvalue (stack[sp].loc, |
6231 | stack[sp].expr, true, true); | |
85498824 | 6232 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 6233 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
6234 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
6235 | == truthvalue_false_node); | |
27bf414c JM |
6236 | break; |
6237 | case TRUTH_ORIF_EXPR: | |
f2a71bbc | 6238 | stack[sp].expr |
267bac10 JM |
6239 | = convert_lvalue_to_rvalue (stack[sp].loc, |
6240 | stack[sp].expr, true, true); | |
85498824 | 6241 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 6242 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
6243 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
6244 | == truthvalue_true_node); | |
27bf414c JM |
6245 | break; |
6246 | default: | |
6247 | break; | |
6248 | } | |
6249 | sp++; | |
ca80e52b | 6250 | stack[sp].loc = binary_loc; |
27bf414c JM |
6251 | stack[sp].expr = c_parser_cast_expression (parser, NULL); |
6252 | stack[sp].prec = oprec; | |
6253 | stack[sp].op = ocode; | |
c2255bc4 | 6254 | stack[sp].loc = binary_loc; |
27bf414c JM |
6255 | } |
6256 | out: | |
6257 | while (sp > 0) | |
6258 | POP; | |
6259 | return stack[0].expr; | |
6260 | #undef POP | |
6261 | } | |
6262 | ||
6263 | /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not | |
6264 | NULL then it is an Objective-C message expression which is the | |
6265 | primary-expression starting the expression as an initializer. | |
6266 | ||
6267 | cast-expression: | |
6268 | unary-expression | |
6269 | ( type-name ) unary-expression | |
6270 | */ | |
6271 | ||
6272 | static struct c_expr | |
6273 | c_parser_cast_expression (c_parser *parser, struct c_expr *after) | |
6274 | { | |
c2255bc4 | 6275 | location_t cast_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6276 | gcc_assert (!after || c_dialect_objc ()); |
6277 | if (after) | |
c2255bc4 AH |
6278 | return c_parser_postfix_expression_after_primary (parser, |
6279 | cast_loc, *after); | |
27bf414c JM |
6280 | /* If the expression begins with a parenthesized type name, it may |
6281 | be either a cast or a compound literal; we need to see whether | |
6282 | the next character is '{' to tell the difference. If not, it is | |
29ce73cb PB |
6283 | an unary expression. Full detection of unknown typenames here |
6284 | would require a 3-token lookahead. */ | |
27bf414c JM |
6285 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) |
6286 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6287 | { | |
6288 | struct c_type_name *type_name; | |
6289 | struct c_expr ret; | |
f2a71bbc | 6290 | struct c_expr expr; |
27bf414c JM |
6291 | c_parser_consume_token (parser); |
6292 | type_name = c_parser_type_name (parser); | |
6293 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6294 | if (type_name == NULL) | |
6295 | { | |
6296 | ret.value = error_mark_node; | |
6297 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6298 | ret.original_type = NULL; |
27bf414c JM |
6299 | return ret; |
6300 | } | |
33c9159e AH |
6301 | |
6302 | /* Save casted types in the function's used types hash table. */ | |
8d8d1a28 | 6303 | used_types_insert (type_name->specs->type); |
33c9159e | 6304 | |
27bf414c | 6305 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
24b97832 | 6306 | return c_parser_postfix_expression_after_paren_type (parser, type_name, |
c2255bc4 AH |
6307 | cast_loc); |
6308 | { | |
6309 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
6310 | expr = c_parser_cast_expression (parser, NULL); | |
267bac10 | 6311 | expr = convert_lvalue_to_rvalue (expr_loc, expr, true, true); |
c2255bc4 AH |
6312 | } |
6313 | ret.value = c_cast_expr (cast_loc, type_name, expr.value); | |
27bf414c | 6314 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6315 | ret.original_type = NULL; |
27bf414c JM |
6316 | return ret; |
6317 | } | |
6318 | else | |
6319 | return c_parser_unary_expression (parser); | |
6320 | } | |
6321 | ||
6322 | /* Parse an unary expression (C90 6.3.3, C99 6.5.3). | |
6323 | ||
6324 | unary-expression: | |
6325 | postfix-expression | |
6326 | ++ unary-expression | |
6327 | -- unary-expression | |
6328 | unary-operator cast-expression | |
6329 | sizeof unary-expression | |
6330 | sizeof ( type-name ) | |
6331 | ||
6332 | unary-operator: one of | |
6333 | & * + - ~ ! | |
6334 | ||
6335 | GNU extensions: | |
6336 | ||
6337 | unary-expression: | |
6338 | __alignof__ unary-expression | |
6339 | __alignof__ ( type-name ) | |
6340 | && identifier | |
6341 | ||
48b0b196 | 6342 | (C11 permits _Alignof with type names only.) |
d19fa6b5 | 6343 | |
27bf414c JM |
6344 | unary-operator: one of |
6345 | __extension__ __real__ __imag__ | |
6346 | ||
0a35513e AH |
6347 | Transactional Memory: |
6348 | ||
6349 | unary-expression: | |
6350 | transaction-expression | |
6351 | ||
27bf414c JM |
6352 | In addition, the GNU syntax treats ++ and -- as unary operators, so |
6353 | they may be applied to cast expressions with errors for non-lvalues | |
6354 | given later. */ | |
6355 | ||
6356 | static struct c_expr | |
6357 | c_parser_unary_expression (c_parser *parser) | |
6358 | { | |
6359 | int ext; | |
46bdb9cf | 6360 | struct c_expr ret, op; |
c2255bc4 AH |
6361 | location_t op_loc = c_parser_peek_token (parser)->location; |
6362 | location_t exp_loc; | |
6866c6e8 ILT |
6363 | ret.original_code = ERROR_MARK; |
6364 | ret.original_type = NULL; | |
27bf414c JM |
6365 | switch (c_parser_peek_token (parser)->type) |
6366 | { | |
6367 | case CPP_PLUS_PLUS: | |
6368 | c_parser_consume_token (parser); | |
c2255bc4 | 6369 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6370 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
6371 | |
6372 | /* If there is array notations in op, we expand them. */ | |
b72271b9 | 6373 | if (flag_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) |
36536d79 BI |
6374 | return fix_array_notation_expr (exp_loc, PREINCREMENT_EXPR, op); |
6375 | else | |
6376 | { | |
6377 | op = default_function_array_read_conversion (exp_loc, op); | |
6378 | return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op); | |
6379 | } | |
27bf414c JM |
6380 | case CPP_MINUS_MINUS: |
6381 | c_parser_consume_token (parser); | |
c2255bc4 | 6382 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6383 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
6384 | |
6385 | /* If there is array notations in op, we expand them. */ | |
b72271b9 | 6386 | if (flag_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) |
36536d79 BI |
6387 | return fix_array_notation_expr (exp_loc, PREDECREMENT_EXPR, op); |
6388 | else | |
6389 | { | |
6390 | op = default_function_array_read_conversion (exp_loc, op); | |
6391 | return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op); | |
6392 | } | |
27bf414c JM |
6393 | case CPP_AND: |
6394 | c_parser_consume_token (parser); | |
ebfbbdc5 JJ |
6395 | op = c_parser_cast_expression (parser, NULL); |
6396 | mark_exp_read (op.value); | |
6397 | return parser_build_unary_op (op_loc, ADDR_EXPR, op); | |
27bf414c JM |
6398 | case CPP_MULT: |
6399 | c_parser_consume_token (parser); | |
c2255bc4 | 6400 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6401 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6402 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
dd865ef6 | 6403 | ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR); |
27bf414c JM |
6404 | return ret; |
6405 | case CPP_PLUS: | |
8400e75e | 6406 | if (!c_dialect_objc () && !in_system_header_at (input_location)) |
c2255bc4 | 6407 | warning_at (op_loc, |
3ba09659 AH |
6408 | OPT_Wtraditional, |
6409 | "traditional C rejects the unary plus operator"); | |
c7412148 | 6410 | c_parser_consume_token (parser); |
c2255bc4 | 6411 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6412 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6413 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6414 | return parser_build_unary_op (op_loc, CONVERT_EXPR, op); |
27bf414c JM |
6415 | case CPP_MINUS: |
6416 | c_parser_consume_token (parser); | |
c2255bc4 | 6417 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6418 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6419 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6420 | return parser_build_unary_op (op_loc, NEGATE_EXPR, op); |
27bf414c JM |
6421 | case CPP_COMPL: |
6422 | c_parser_consume_token (parser); | |
c2255bc4 | 6423 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6424 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6425 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6426 | return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op); |
27bf414c JM |
6427 | case CPP_NOT: |
6428 | c_parser_consume_token (parser); | |
c2255bc4 | 6429 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6430 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6431 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6432 | return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op); |
27bf414c JM |
6433 | case CPP_AND_AND: |
6434 | /* Refer to the address of a label as a pointer. */ | |
6435 | c_parser_consume_token (parser); | |
6436 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
6437 | { | |
6438 | ret.value = finish_label_address_expr | |
c2255bc4 | 6439 | (c_parser_peek_token (parser)->value, op_loc); |
27bf414c | 6440 | c_parser_consume_token (parser); |
27bf414c JM |
6441 | } |
6442 | else | |
6443 | { | |
6444 | c_parser_error (parser, "expected identifier"); | |
6445 | ret.value = error_mark_node; | |
27bf414c | 6446 | } |
43f6dfd3 | 6447 | return ret; |
27bf414c JM |
6448 | case CPP_KEYWORD: |
6449 | switch (c_parser_peek_token (parser)->keyword) | |
6450 | { | |
6451 | case RID_SIZEOF: | |
6452 | return c_parser_sizeof_expression (parser); | |
6453 | case RID_ALIGNOF: | |
6454 | return c_parser_alignof_expression (parser); | |
6455 | case RID_EXTENSION: | |
6456 | c_parser_consume_token (parser); | |
6457 | ext = disable_extension_diagnostics (); | |
6458 | ret = c_parser_cast_expression (parser, NULL); | |
6459 | restore_extension_diagnostics (ext); | |
6460 | return ret; | |
6461 | case RID_REALPART: | |
6462 | c_parser_consume_token (parser); | |
c2255bc4 | 6463 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6464 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6465 | op = default_function_array_conversion (exp_loc, op); |
6466 | return parser_build_unary_op (op_loc, REALPART_EXPR, op); | |
27bf414c JM |
6467 | case RID_IMAGPART: |
6468 | c_parser_consume_token (parser); | |
c2255bc4 | 6469 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6470 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6471 | op = default_function_array_conversion (exp_loc, op); |
6472 | return parser_build_unary_op (op_loc, IMAGPART_EXPR, op); | |
0a35513e AH |
6473 | case RID_TRANSACTION_ATOMIC: |
6474 | case RID_TRANSACTION_RELAXED: | |
6475 | return c_parser_transaction_expression (parser, | |
6476 | c_parser_peek_token (parser)->keyword); | |
27bf414c JM |
6477 | default: |
6478 | return c_parser_postfix_expression (parser); | |
6479 | } | |
6480 | default: | |
6481 | return c_parser_postfix_expression (parser); | |
6482 | } | |
6483 | } | |
6484 | ||
6485 | /* Parse a sizeof expression. */ | |
6486 | ||
6487 | static struct c_expr | |
6488 | c_parser_sizeof_expression (c_parser *parser) | |
6489 | { | |
6490 | struct c_expr expr; | |
c7412148 | 6491 | location_t expr_loc; |
27bf414c JM |
6492 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF)); |
6493 | c_parser_consume_token (parser); | |
7d882b83 | 6494 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6495 | in_sizeof++; |
6496 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6497 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6498 | { | |
6499 | /* Either sizeof ( type-name ) or sizeof unary-expression | |
6500 | starting with a compound literal. */ | |
6501 | struct c_type_name *type_name; | |
6502 | c_parser_consume_token (parser); | |
c7412148 | 6503 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6504 | type_name = c_parser_type_name (parser); |
6505 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6506 | if (type_name == NULL) | |
6507 | { | |
6508 | struct c_expr ret; | |
7d882b83 | 6509 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6510 | in_sizeof--; |
6511 | ret.value = error_mark_node; | |
6512 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6513 | ret.original_type = NULL; |
27bf414c JM |
6514 | return ret; |
6515 | } | |
6516 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6517 | { | |
6518 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6519 | type_name, |
6520 | expr_loc); | |
27bf414c JM |
6521 | goto sizeof_expr; |
6522 | } | |
6523 | /* sizeof ( type-name ). */ | |
7d882b83 | 6524 | c_inhibit_evaluation_warnings--; |
27bf414c | 6525 | in_sizeof--; |
c2255bc4 | 6526 | return c_expr_sizeof_type (expr_loc, type_name); |
27bf414c JM |
6527 | } |
6528 | else | |
6529 | { | |
c7412148 | 6530 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6531 | expr = c_parser_unary_expression (parser); |
6532 | sizeof_expr: | |
7d882b83 | 6533 | c_inhibit_evaluation_warnings--; |
27bf414c | 6534 | in_sizeof--; |
ebfbbdc5 | 6535 | mark_exp_read (expr.value); |
27bf414c JM |
6536 | if (TREE_CODE (expr.value) == COMPONENT_REF |
6537 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 6538 | error_at (expr_loc, "%<sizeof%> applied to a bit-field"); |
c2255bc4 | 6539 | return c_expr_sizeof_expr (expr_loc, expr); |
27bf414c JM |
6540 | } |
6541 | } | |
6542 | ||
6543 | /* Parse an alignof expression. */ | |
6544 | ||
6545 | static struct c_expr | |
6546 | c_parser_alignof_expression (c_parser *parser) | |
6547 | { | |
6548 | struct c_expr expr; | |
c2255bc4 | 6549 | location_t loc = c_parser_peek_token (parser)->location; |
d19fa6b5 | 6550 | tree alignof_spelling = c_parser_peek_token (parser)->value; |
27bf414c | 6551 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF)); |
296674db JM |
6552 | bool is_c11_alignof = strcmp (IDENTIFIER_POINTER (alignof_spelling), |
6553 | "_Alignof") == 0; | |
d19fa6b5 | 6554 | /* A diagnostic is not required for the use of this identifier in |
48b0b196 | 6555 | the implementation namespace; only diagnose it for the C11 |
d19fa6b5 | 6556 | spelling because of existing code using the other spellings. */ |
296674db | 6557 | if (!flag_isoc11 && is_c11_alignof) |
d19fa6b5 JM |
6558 | { |
6559 | if (flag_isoc99) | |
c1771a20 | 6560 | pedwarn (loc, OPT_Wpedantic, "ISO C99 does not support %qE", |
d19fa6b5 JM |
6561 | alignof_spelling); |
6562 | else | |
c1771a20 | 6563 | pedwarn (loc, OPT_Wpedantic, "ISO C90 does not support %qE", |
d19fa6b5 JM |
6564 | alignof_spelling); |
6565 | } | |
27bf414c | 6566 | c_parser_consume_token (parser); |
7d882b83 | 6567 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6568 | in_alignof++; |
6569 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6570 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6571 | { | |
6572 | /* Either __alignof__ ( type-name ) or __alignof__ | |
6573 | unary-expression starting with a compound literal. */ | |
24b97832 | 6574 | location_t loc; |
27bf414c JM |
6575 | struct c_type_name *type_name; |
6576 | struct c_expr ret; | |
6577 | c_parser_consume_token (parser); | |
24b97832 | 6578 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6579 | type_name = c_parser_type_name (parser); |
6580 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6581 | if (type_name == NULL) | |
6582 | { | |
6583 | struct c_expr ret; | |
7d882b83 | 6584 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6585 | in_alignof--; |
6586 | ret.value = error_mark_node; | |
6587 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6588 | ret.original_type = NULL; |
27bf414c JM |
6589 | return ret; |
6590 | } | |
6591 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6592 | { | |
6593 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6594 | type_name, |
6595 | loc); | |
27bf414c JM |
6596 | goto alignof_expr; |
6597 | } | |
6598 | /* alignof ( type-name ). */ | |
7d882b83 | 6599 | c_inhibit_evaluation_warnings--; |
27bf414c | 6600 | in_alignof--; |
296674db JM |
6601 | ret.value = c_sizeof_or_alignof_type (loc, groktypename (type_name, |
6602 | NULL, NULL), | |
6603 | false, is_c11_alignof, 1); | |
27bf414c | 6604 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6605 | ret.original_type = NULL; |
27bf414c JM |
6606 | return ret; |
6607 | } | |
6608 | else | |
6609 | { | |
6610 | struct c_expr ret; | |
6611 | expr = c_parser_unary_expression (parser); | |
6612 | alignof_expr: | |
ebfbbdc5 | 6613 | mark_exp_read (expr.value); |
7d882b83 | 6614 | c_inhibit_evaluation_warnings--; |
27bf414c | 6615 | in_alignof--; |
c1771a20 | 6616 | pedwarn (loc, OPT_Wpedantic, "ISO C does not allow %<%E (expression)%>", |
d19fa6b5 | 6617 | alignof_spelling); |
c2255bc4 | 6618 | ret.value = c_alignof_expr (loc, expr.value); |
27bf414c | 6619 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6620 | ret.original_type = NULL; |
27bf414c JM |
6621 | return ret; |
6622 | } | |
6623 | } | |
6624 | ||
f90e8e2e | 6625 | /* Helper function to read arguments of builtins which are interfaces |
2205ed25 | 6626 | for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and |
f90e8e2e AS |
6627 | others. The name of the builtin is passed using BNAME parameter. |
6628 | Function returns true if there were no errors while parsing and | |
86785830 | 6629 | stores the arguments in CEXPR_LIST. */ |
f90e8e2e AS |
6630 | static bool |
6631 | c_parser_get_builtin_args (c_parser *parser, const char *bname, | |
4e7d7b3d JJ |
6632 | vec<c_expr_t, va_gc> **ret_cexpr_list, |
6633 | bool choose_expr_p) | |
f90e8e2e AS |
6634 | { |
6635 | location_t loc = c_parser_peek_token (parser)->location; | |
9771b263 | 6636 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 | 6637 | c_expr_t expr; |
4e7d7b3d | 6638 | bool saved_force_folding_builtin_constant_p; |
f90e8e2e | 6639 | |
86785830 | 6640 | *ret_cexpr_list = NULL; |
f90e8e2e AS |
6641 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) |
6642 | { | |
6643 | error_at (loc, "cannot take address of %qs", bname); | |
6644 | return false; | |
6645 | } | |
6646 | ||
6647 | c_parser_consume_token (parser); | |
6648 | ||
6649 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
6650 | { | |
6651 | c_parser_consume_token (parser); | |
6652 | return true; | |
6653 | } | |
86785830 | 6654 | |
4e7d7b3d JJ |
6655 | saved_force_folding_builtin_constant_p |
6656 | = force_folding_builtin_constant_p; | |
6657 | force_folding_builtin_constant_p |= choose_expr_p; | |
86785830 | 6658 | expr = c_parser_expr_no_commas (parser, NULL); |
4e7d7b3d JJ |
6659 | force_folding_builtin_constant_p |
6660 | = saved_force_folding_builtin_constant_p; | |
9771b263 | 6661 | vec_alloc (cexpr_list, 1); |
b581c05c | 6662 | vec_safe_push (cexpr_list, expr); |
86785830 AS |
6663 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
6664 | { | |
6665 | c_parser_consume_token (parser); | |
6666 | expr = c_parser_expr_no_commas (parser, NULL); | |
b581c05c | 6667 | vec_safe_push (cexpr_list, expr); |
86785830 | 6668 | } |
f90e8e2e AS |
6669 | |
6670 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6671 | return false; | |
6672 | ||
86785830 | 6673 | *ret_cexpr_list = cexpr_list; |
f90e8e2e AS |
6674 | return true; |
6675 | } | |
6676 | ||
433cc7b0 TT |
6677 | /* This represents a single generic-association. */ |
6678 | ||
6679 | struct c_generic_association | |
6680 | { | |
6681 | /* The location of the starting token of the type. */ | |
6682 | location_t type_location; | |
fb48aadc | 6683 | /* The association's type, or NULL_TREE for 'default'. */ |
433cc7b0 TT |
6684 | tree type; |
6685 | /* The association's expression. */ | |
6686 | struct c_expr expression; | |
6687 | }; | |
6688 | ||
6689 | /* Parse a generic-selection. (C11 6.5.1.1). | |
6690 | ||
6691 | generic-selection: | |
6692 | _Generic ( assignment-expression , generic-assoc-list ) | |
6693 | ||
6694 | generic-assoc-list: | |
6695 | generic-association | |
6696 | generic-assoc-list , generic-association | |
6697 | ||
6698 | generic-association: | |
6699 | type-name : assignment-expression | |
6700 | default : assignment-expression | |
6701 | */ | |
6702 | ||
6703 | static struct c_expr | |
6704 | c_parser_generic_selection (c_parser *parser) | |
6705 | { | |
6706 | vec<c_generic_association> associations = vNULL; | |
6707 | struct c_expr selector, error_expr; | |
6708 | tree selector_type; | |
6709 | struct c_generic_association matched_assoc; | |
6710 | bool match_found = false; | |
6711 | location_t generic_loc, selector_loc; | |
6712 | ||
6713 | error_expr.original_code = ERROR_MARK; | |
6714 | error_expr.original_type = NULL; | |
6715 | error_expr.value = error_mark_node; | |
6716 | matched_assoc.type_location = UNKNOWN_LOCATION; | |
6717 | matched_assoc.type = NULL_TREE; | |
6718 | matched_assoc.expression = error_expr; | |
6719 | ||
6720 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_GENERIC)); | |
6721 | generic_loc = c_parser_peek_token (parser)->location; | |
6722 | c_parser_consume_token (parser); | |
6723 | if (!flag_isoc11) | |
6724 | { | |
6725 | if (flag_isoc99) | |
6726 | pedwarn (generic_loc, OPT_Wpedantic, | |
6727 | "ISO C99 does not support %<_Generic%>"); | |
6728 | else | |
6729 | pedwarn (generic_loc, OPT_Wpedantic, | |
6730 | "ISO C90 does not support %<_Generic%>"); | |
6731 | } | |
6732 | ||
6733 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6734 | return error_expr; | |
6735 | ||
6736 | c_inhibit_evaluation_warnings++; | |
6737 | selector_loc = c_parser_peek_token (parser)->location; | |
6738 | selector = c_parser_expr_no_commas (parser, NULL); | |
6739 | selector = default_function_array_conversion (selector_loc, selector); | |
6740 | c_inhibit_evaluation_warnings--; | |
6741 | ||
6742 | if (selector.value == error_mark_node) | |
6743 | { | |
6744 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6745 | return selector; | |
6746 | } | |
6747 | selector_type = TREE_TYPE (selector.value); | |
6748 | /* In ISO C terms, rvalues (including the controlling expression of | |
6749 | _Generic) do not have qualified types. */ | |
6750 | if (TREE_CODE (selector_type) != ARRAY_TYPE) | |
6751 | selector_type = TYPE_MAIN_VARIANT (selector_type); | |
6752 | /* In ISO C terms, _Noreturn is not part of the type of expressions | |
6753 | such as &abort, but in GCC it is represented internally as a type | |
6754 | qualifier. */ | |
6755 | if (FUNCTION_POINTER_TYPE_P (selector_type) | |
6756 | && TYPE_QUALS (TREE_TYPE (selector_type)) != TYPE_UNQUALIFIED) | |
6757 | selector_type | |
6758 | = build_pointer_type (TYPE_MAIN_VARIANT (TREE_TYPE (selector_type))); | |
6759 | ||
6760 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6761 | { | |
6762 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6763 | return error_expr; | |
6764 | } | |
6765 | ||
6766 | while (1) | |
6767 | { | |
6768 | struct c_generic_association assoc, *iter; | |
6769 | unsigned int ix; | |
6770 | c_token *token = c_parser_peek_token (parser); | |
6771 | ||
6772 | assoc.type_location = token->location; | |
6773 | if (token->type == CPP_KEYWORD && token->keyword == RID_DEFAULT) | |
6774 | { | |
6775 | c_parser_consume_token (parser); | |
6776 | assoc.type = NULL_TREE; | |
6777 | } | |
6778 | else | |
6779 | { | |
6780 | struct c_type_name *type_name; | |
6781 | ||
6782 | type_name = c_parser_type_name (parser); | |
6783 | if (type_name == NULL) | |
6784 | { | |
6785 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6786 | goto error_exit; | |
6787 | } | |
6788 | assoc.type = groktypename (type_name, NULL, NULL); | |
6789 | if (assoc.type == error_mark_node) | |
6790 | { | |
6791 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6792 | goto error_exit; | |
6793 | } | |
6794 | ||
6795 | if (TREE_CODE (assoc.type) == FUNCTION_TYPE) | |
6796 | error_at (assoc.type_location, | |
6797 | "%<_Generic%> association has function type"); | |
6798 | else if (!COMPLETE_TYPE_P (assoc.type)) | |
6799 | error_at (assoc.type_location, | |
6800 | "%<_Generic%> association has incomplete type"); | |
6801 | ||
6802 | if (variably_modified_type_p (assoc.type, NULL_TREE)) | |
6803 | error_at (assoc.type_location, | |
6804 | "%<_Generic%> association has " | |
6805 | "variable length type"); | |
6806 | } | |
6807 | ||
6808 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
6809 | { | |
6810 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6811 | goto error_exit; | |
6812 | } | |
6813 | ||
6814 | assoc.expression = c_parser_expr_no_commas (parser, NULL); | |
6815 | if (assoc.expression.value == error_mark_node) | |
6816 | { | |
6817 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6818 | goto error_exit; | |
6819 | } | |
6820 | ||
6821 | for (ix = 0; associations.iterate (ix, &iter); ++ix) | |
6822 | { | |
6823 | if (assoc.type == NULL_TREE) | |
6824 | { | |
6825 | if (iter->type == NULL_TREE) | |
6826 | { | |
6827 | error_at (assoc.type_location, | |
6828 | "duplicate %<default%> case in %<_Generic%>"); | |
6829 | inform (iter->type_location, "original %<default%> is here"); | |
6830 | } | |
6831 | } | |
6832 | else if (iter->type != NULL_TREE) | |
6833 | { | |
6834 | if (comptypes (assoc.type, iter->type)) | |
6835 | { | |
6836 | error_at (assoc.type_location, | |
6837 | "%<_Generic%> specifies two compatible types"); | |
6838 | inform (iter->type_location, "compatible type is here"); | |
6839 | } | |
6840 | } | |
6841 | } | |
6842 | ||
6843 | if (assoc.type == NULL_TREE) | |
6844 | { | |
6845 | if (!match_found) | |
6846 | { | |
6847 | matched_assoc = assoc; | |
6848 | match_found = true; | |
6849 | } | |
6850 | } | |
6851 | else if (comptypes (assoc.type, selector_type)) | |
6852 | { | |
6853 | if (!match_found || matched_assoc.type == NULL_TREE) | |
6854 | { | |
6855 | matched_assoc = assoc; | |
6856 | match_found = true; | |
6857 | } | |
6858 | else | |
6859 | { | |
6860 | error_at (assoc.type_location, | |
6861 | "%<_Generic> selector matches multiple associations"); | |
6862 | inform (matched_assoc.type_location, | |
6863 | "other match is here"); | |
6864 | } | |
6865 | } | |
6866 | ||
6867 | associations.safe_push (assoc); | |
6868 | ||
6869 | if (c_parser_peek_token (parser)->type != CPP_COMMA) | |
6870 | break; | |
6871 | c_parser_consume_token (parser); | |
6872 | } | |
6873 | ||
6874 | associations.release (); | |
6875 | ||
6876 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6877 | { | |
6878 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6879 | return error_expr; | |
6880 | } | |
6881 | ||
6882 | if (!match_found) | |
6883 | { | |
6884 | error_at (selector_loc, "%<_Generic%> selector of type %qT is not " | |
6885 | "compatible with any association", | |
6886 | selector_type); | |
6887 | return error_expr; | |
6888 | } | |
6889 | ||
6890 | return matched_assoc.expression; | |
6891 | ||
6892 | error_exit: | |
6893 | associations.release (); | |
6894 | return error_expr; | |
6895 | } | |
f90e8e2e | 6896 | |
27bf414c JM |
6897 | /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2). |
6898 | ||
6899 | postfix-expression: | |
6900 | primary-expression | |
6901 | postfix-expression [ expression ] | |
6902 | postfix-expression ( argument-expression-list[opt] ) | |
6903 | postfix-expression . identifier | |
6904 | postfix-expression -> identifier | |
6905 | postfix-expression ++ | |
6906 | postfix-expression -- | |
6907 | ( type-name ) { initializer-list } | |
6908 | ( type-name ) { initializer-list , } | |
6909 | ||
6910 | argument-expression-list: | |
6911 | argument-expression | |
6912 | argument-expression-list , argument-expression | |
6913 | ||
6914 | primary-expression: | |
6915 | identifier | |
6916 | constant | |
6917 | string-literal | |
6918 | ( expression ) | |
433cc7b0 | 6919 | generic-selection |
27bf414c JM |
6920 | |
6921 | GNU extensions: | |
6922 | ||
6923 | primary-expression: | |
6924 | __func__ | |
6925 | (treated as a keyword in GNU C) | |
6926 | __FUNCTION__ | |
6927 | __PRETTY_FUNCTION__ | |
6928 | ( compound-statement ) | |
6929 | __builtin_va_arg ( assignment-expression , type-name ) | |
6930 | __builtin_offsetof ( type-name , offsetof-member-designator ) | |
6931 | __builtin_choose_expr ( assignment-expression , | |
6932 | assignment-expression , | |
6933 | assignment-expression ) | |
6934 | __builtin_types_compatible_p ( type-name , type-name ) | |
d4a83c10 | 6935 | __builtin_complex ( assignment-expression , assignment-expression ) |
f90e8e2e AS |
6936 | __builtin_shuffle ( assignment-expression , assignment-expression ) |
6937 | __builtin_shuffle ( assignment-expression , | |
6938 | assignment-expression , | |
6939 | assignment-expression, ) | |
27bf414c JM |
6940 | |
6941 | offsetof-member-designator: | |
6942 | identifier | |
6943 | offsetof-member-designator . identifier | |
6944 | offsetof-member-designator [ expression ] | |
6945 | ||
6946 | Objective-C: | |
6947 | ||
6948 | primary-expression: | |
6949 | [ objc-receiver objc-message-args ] | |
6950 | @selector ( objc-selector-arg ) | |
6951 | @protocol ( identifier ) | |
6952 | @encode ( type-name ) | |
6953 | objc-string-literal | |
bede2adc | 6954 | Classname . identifier |
27bf414c JM |
6955 | */ |
6956 | ||
6957 | static struct c_expr | |
6958 | c_parser_postfix_expression (c_parser *parser) | |
6959 | { | |
f90e8e2e | 6960 | struct c_expr expr, e1; |
27bf414c | 6961 | struct c_type_name *t1, *t2; |
c2255bc4 | 6962 | location_t loc = c_parser_peek_token (parser)->location;; |
6866c6e8 ILT |
6963 | expr.original_code = ERROR_MARK; |
6964 | expr.original_type = NULL; | |
27bf414c JM |
6965 | switch (c_parser_peek_token (parser)->type) |
6966 | { | |
6967 | case CPP_NUMBER: | |
754ccf7c | 6968 | expr.value = c_parser_peek_token (parser)->value; |
754ccf7c JJ |
6969 | loc = c_parser_peek_token (parser)->location; |
6970 | c_parser_consume_token (parser); | |
6971 | if (TREE_CODE (expr.value) == FIXED_CST | |
6972 | && !targetm.fixed_point_supported_p ()) | |
6973 | { | |
6974 | error_at (loc, "fixed-point types not supported for this target"); | |
6975 | expr.value = error_mark_node; | |
6976 | } | |
6977 | break; | |
27bf414c | 6978 | case CPP_CHAR: |
b6baa67d KVH |
6979 | case CPP_CHAR16: |
6980 | case CPP_CHAR32: | |
27bf414c JM |
6981 | case CPP_WCHAR: |
6982 | expr.value = c_parser_peek_token (parser)->value; | |
27bf414c JM |
6983 | c_parser_consume_token (parser); |
6984 | break; | |
6985 | case CPP_STRING: | |
b6baa67d KVH |
6986 | case CPP_STRING16: |
6987 | case CPP_STRING32: | |
27bf414c | 6988 | case CPP_WSTRING: |
2c6e3f55 | 6989 | case CPP_UTF8STRING: |
27bf414c JM |
6990 | expr.value = c_parser_peek_token (parser)->value; |
6991 | expr.original_code = STRING_CST; | |
6992 | c_parser_consume_token (parser); | |
6993 | break; | |
6994 | case CPP_OBJC_STRING: | |
6995 | gcc_assert (c_dialect_objc ()); | |
6996 | expr.value | |
6997 | = objc_build_string_object (c_parser_peek_token (parser)->value); | |
27bf414c JM |
6998 | c_parser_consume_token (parser); |
6999 | break; | |
7000 | case CPP_NAME: | |
bede2adc | 7001 | switch (c_parser_peek_token (parser)->id_kind) |
27bf414c | 7002 | { |
bede2adc NP |
7003 | case C_ID_ID: |
7004 | { | |
7005 | tree id = c_parser_peek_token (parser)->value; | |
7006 | c_parser_consume_token (parser); | |
7007 | expr.value = build_external_ref (loc, id, | |
7008 | (c_parser_peek_token (parser)->type | |
7009 | == CPP_OPEN_PAREN), | |
7010 | &expr.original_type); | |
7011 | break; | |
7012 | } | |
7013 | case C_ID_CLASSNAME: | |
7014 | { | |
7015 | /* Here we parse the Objective-C 2.0 Class.name dot | |
7016 | syntax. */ | |
7017 | tree class_name = c_parser_peek_token (parser)->value; | |
7018 | tree component; | |
7019 | c_parser_consume_token (parser); | |
7020 | gcc_assert (c_dialect_objc ()); | |
7021 | if (!c_parser_require (parser, CPP_DOT, "expected %<.%>")) | |
7022 | { | |
7023 | expr.value = error_mark_node; | |
7024 | break; | |
7025 | } | |
7026 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7027 | { | |
7028 | c_parser_error (parser, "expected identifier"); | |
7029 | expr.value = error_mark_node; | |
7030 | break; | |
7031 | } | |
7032 | component = c_parser_peek_token (parser)->value; | |
7033 | c_parser_consume_token (parser); | |
7034 | expr.value = objc_build_class_component_ref (class_name, | |
7035 | component); | |
7036 | break; | |
7037 | } | |
7038 | default: | |
27bf414c JM |
7039 | c_parser_error (parser, "expected expression"); |
7040 | expr.value = error_mark_node; | |
27bf414c JM |
7041 | break; |
7042 | } | |
27bf414c JM |
7043 | break; |
7044 | case CPP_OPEN_PAREN: | |
7045 | /* A parenthesized expression, statement expression or compound | |
7046 | literal. */ | |
7047 | if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE) | |
7048 | { | |
7049 | /* A statement expression. */ | |
7050 | tree stmt; | |
c2255bc4 | 7051 | location_t brace_loc; |
27bf414c | 7052 | c_parser_consume_token (parser); |
c2255bc4 | 7053 | brace_loc = c_parser_peek_token (parser)->location; |
27bf414c | 7054 | c_parser_consume_token (parser); |
38e01f9e | 7055 | if (!building_stmt_list_p ()) |
27bf414c | 7056 | { |
c2255bc4 | 7057 | error_at (loc, "braced-group within expression allowed " |
3ba09659 | 7058 | "only inside a function"); |
27bf414c JM |
7059 | parser->error = true; |
7060 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
7061 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7062 | expr.value = error_mark_node; | |
27bf414c JM |
7063 | break; |
7064 | } | |
7065 | stmt = c_begin_stmt_expr (); | |
7066 | c_parser_compound_statement_nostart (parser); | |
7067 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7068 | "expected %<)%>"); | |
c1771a20 | 7069 | pedwarn (loc, OPT_Wpedantic, |
509c9d60 | 7070 | "ISO C forbids braced-groups within expressions"); |
c2255bc4 | 7071 | expr.value = c_finish_stmt_expr (brace_loc, stmt); |
82c3c067 | 7072 | mark_exp_read (expr.value); |
27bf414c JM |
7073 | } |
7074 | else if (c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
7075 | { | |
7076 | /* A compound literal. ??? Can we actually get here rather | |
7077 | than going directly to | |
7078 | c_parser_postfix_expression_after_paren_type from | |
7079 | elsewhere? */ | |
24b97832 | 7080 | location_t loc; |
27bf414c JM |
7081 | struct c_type_name *type_name; |
7082 | c_parser_consume_token (parser); | |
24b97832 | 7083 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7084 | type_name = c_parser_type_name (parser); |
7085 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7086 | "expected %<)%>"); | |
7087 | if (type_name == NULL) | |
7088 | { | |
7089 | expr.value = error_mark_node; | |
27bf414c JM |
7090 | } |
7091 | else | |
7092 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
7093 | type_name, |
7094 | loc); | |
27bf414c JM |
7095 | } |
7096 | else | |
7097 | { | |
7098 | /* A parenthesized expression. */ | |
7099 | c_parser_consume_token (parser); | |
7100 | expr = c_parser_expression (parser); | |
7101 | if (TREE_CODE (expr.value) == MODIFY_EXPR) | |
7102 | TREE_NO_WARNING (expr.value) = 1; | |
928c19bb JM |
7103 | if (expr.original_code != C_MAYBE_CONST_EXPR) |
7104 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7105 | /* Don't change EXPR.ORIGINAL_TYPE. */ |
27bf414c JM |
7106 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
7107 | "expected %<)%>"); | |
7108 | } | |
7109 | break; | |
7110 | case CPP_KEYWORD: | |
7111 | switch (c_parser_peek_token (parser)->keyword) | |
7112 | { | |
7113 | case RID_FUNCTION_NAME: | |
7114 | case RID_PRETTY_FUNCTION_NAME: | |
7115 | case RID_C99_FUNCTION_NAME: | |
c2255bc4 | 7116 | expr.value = fname_decl (loc, |
3ba09659 | 7117 | c_parser_peek_token (parser)->keyword, |
27bf414c | 7118 | c_parser_peek_token (parser)->value); |
27bf414c JM |
7119 | c_parser_consume_token (parser); |
7120 | break; | |
7121 | case RID_VA_ARG: | |
7122 | c_parser_consume_token (parser); | |
7123 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7124 | { | |
7125 | expr.value = error_mark_node; | |
27bf414c JM |
7126 | break; |
7127 | } | |
7128 | e1 = c_parser_expr_no_commas (parser, NULL); | |
ebfbbdc5 | 7129 | mark_exp_read (e1.value); |
928c19bb | 7130 | e1.value = c_fully_fold (e1.value, false, NULL); |
27bf414c JM |
7131 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
7132 | { | |
7133 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7134 | expr.value = error_mark_node; | |
27bf414c JM |
7135 | break; |
7136 | } | |
72b5577d | 7137 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7138 | t1 = c_parser_type_name (parser); |
7139 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7140 | "expected %<)%>"); | |
7141 | if (t1 == NULL) | |
7142 | { | |
7143 | expr.value = error_mark_node; | |
27bf414c JM |
7144 | } |
7145 | else | |
7146 | { | |
928c19bb | 7147 | tree type_expr = NULL_TREE; |
c2255bc4 AH |
7148 | expr.value = c_build_va_arg (loc, e1.value, |
7149 | groktypename (t1, &type_expr, NULL)); | |
928c19bb JM |
7150 | if (type_expr) |
7151 | { | |
7152 | expr.value = build2 (C_MAYBE_CONST_EXPR, | |
7153 | TREE_TYPE (expr.value), type_expr, | |
7154 | expr.value); | |
7155 | C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true; | |
7156 | } | |
27bf414c JM |
7157 | } |
7158 | break; | |
7159 | case RID_OFFSETOF: | |
7160 | c_parser_consume_token (parser); | |
7161 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7162 | { | |
7163 | expr.value = error_mark_node; | |
27bf414c JM |
7164 | break; |
7165 | } | |
7166 | t1 = c_parser_type_name (parser); | |
7167 | if (t1 == NULL) | |
29ce73cb | 7168 | parser->error = true; |
27bf414c | 7169 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
29ce73cb PB |
7170 | gcc_assert (parser->error); |
7171 | if (parser->error) | |
27bf414c JM |
7172 | { |
7173 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7174 | expr.value = error_mark_node; | |
27bf414c JM |
7175 | break; |
7176 | } | |
29ce73cb | 7177 | |
27bf414c | 7178 | { |
928c19bb | 7179 | tree type = groktypename (t1, NULL, NULL); |
27bf414c JM |
7180 | tree offsetof_ref; |
7181 | if (type == error_mark_node) | |
7182 | offsetof_ref = error_mark_node; | |
7183 | else | |
c2255bc4 AH |
7184 | { |
7185 | offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node); | |
7186 | SET_EXPR_LOCATION (offsetof_ref, loc); | |
7187 | } | |
27bf414c JM |
7188 | /* Parse the second argument to __builtin_offsetof. We |
7189 | must have one identifier, and beyond that we want to | |
7190 | accept sub structure and sub array references. */ | |
7191 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
7192 | { | |
7193 | offsetof_ref = build_component_ref | |
c2255bc4 | 7194 | (loc, offsetof_ref, c_parser_peek_token (parser)->value); |
27bf414c JM |
7195 | c_parser_consume_token (parser); |
7196 | while (c_parser_next_token_is (parser, CPP_DOT) | |
7197 | || c_parser_next_token_is (parser, | |
634b5df5 JJ |
7198 | CPP_OPEN_SQUARE) |
7199 | || c_parser_next_token_is (parser, | |
7200 | CPP_DEREF)) | |
27bf414c | 7201 | { |
634b5df5 JJ |
7202 | if (c_parser_next_token_is (parser, CPP_DEREF)) |
7203 | { | |
7204 | loc = c_parser_peek_token (parser)->location; | |
c2255bc4 AH |
7205 | offsetof_ref = build_array_ref (loc, |
7206 | offsetof_ref, | |
7207 | integer_zero_node); | |
634b5df5 JJ |
7208 | goto do_dot; |
7209 | } | |
7210 | else if (c_parser_next_token_is (parser, CPP_DOT)) | |
27bf414c | 7211 | { |
634b5df5 | 7212 | do_dot: |
27bf414c JM |
7213 | c_parser_consume_token (parser); |
7214 | if (c_parser_next_token_is_not (parser, | |
7215 | CPP_NAME)) | |
7216 | { | |
7217 | c_parser_error (parser, "expected identifier"); | |
7218 | break; | |
7219 | } | |
7220 | offsetof_ref = build_component_ref | |
c2255bc4 | 7221 | (loc, offsetof_ref, |
27bf414c JM |
7222 | c_parser_peek_token (parser)->value); |
7223 | c_parser_consume_token (parser); | |
7224 | } | |
7225 | else | |
7226 | { | |
267bac10 | 7227 | struct c_expr ce; |
27bf414c | 7228 | tree idx; |
6a3799eb | 7229 | loc = c_parser_peek_token (parser)->location; |
27bf414c | 7230 | c_parser_consume_token (parser); |
267bac10 JM |
7231 | ce = c_parser_expression (parser); |
7232 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
7233 | idx = ce.value; | |
928c19bb | 7234 | idx = c_fully_fold (idx, false, NULL); |
27bf414c JM |
7235 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, |
7236 | "expected %<]%>"); | |
c2255bc4 | 7237 | offsetof_ref = build_array_ref (loc, offsetof_ref, idx); |
27bf414c JM |
7238 | } |
7239 | } | |
7240 | } | |
7241 | else | |
7242 | c_parser_error (parser, "expected identifier"); | |
7243 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7244 | "expected %<)%>"); | |
cf9e9959 | 7245 | expr.value = fold_offsetof (offsetof_ref); |
27bf414c JM |
7246 | } |
7247 | break; | |
7248 | case RID_CHOOSE_EXPR: | |
27bf414c | 7249 | { |
9771b263 | 7250 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
7251 | c_expr_t *e1_p, *e2_p, *e3_p; |
7252 | tree c; | |
27bf414c | 7253 | |
f90e8e2e AS |
7254 | c_parser_consume_token (parser); |
7255 | if (!c_parser_get_builtin_args (parser, | |
7256 | "__builtin_choose_expr", | |
4e7d7b3d | 7257 | &cexpr_list, true)) |
f90e8e2e AS |
7258 | { |
7259 | expr.value = error_mark_node; | |
7260 | break; | |
7261 | } | |
7262 | ||
9771b263 | 7263 | if (vec_safe_length (cexpr_list) != 3) |
f90e8e2e AS |
7264 | { |
7265 | error_at (loc, "wrong number of arguments to " | |
7266 | "%<__builtin_choose_expr%>"); | |
7267 | expr.value = error_mark_node; | |
7268 | break; | |
7269 | } | |
86785830 | 7270 | |
9771b263 DN |
7271 | e1_p = &(*cexpr_list)[0]; |
7272 | e2_p = &(*cexpr_list)[1]; | |
7273 | e3_p = &(*cexpr_list)[2]; | |
86785830 AS |
7274 | |
7275 | c = e1_p->value; | |
7276 | mark_exp_read (e2_p->value); | |
7277 | mark_exp_read (e3_p->value); | |
928c19bb JM |
7278 | if (TREE_CODE (c) != INTEGER_CST |
7279 | || !INTEGRAL_TYPE_P (TREE_TYPE (c))) | |
3ba09659 AH |
7280 | error_at (loc, |
7281 | "first argument to %<__builtin_choose_expr%> not" | |
7282 | " a constant"); | |
928c19bb | 7283 | constant_expression_warning (c); |
86785830 | 7284 | expr = integer_zerop (c) ? *e3_p : *e2_p; |
f90e8e2e | 7285 | break; |
27bf414c | 7286 | } |
27bf414c JM |
7287 | case RID_TYPES_COMPATIBLE_P: |
7288 | c_parser_consume_token (parser); | |
7289 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7290 | { | |
7291 | expr.value = error_mark_node; | |
27bf414c JM |
7292 | break; |
7293 | } | |
7294 | t1 = c_parser_type_name (parser); | |
7295 | if (t1 == NULL) | |
7296 | { | |
7297 | expr.value = error_mark_node; | |
27bf414c JM |
7298 | break; |
7299 | } | |
7300 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
7301 | { | |
7302 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7303 | expr.value = error_mark_node; | |
27bf414c JM |
7304 | break; |
7305 | } | |
7306 | t2 = c_parser_type_name (parser); | |
7307 | if (t2 == NULL) | |
7308 | { | |
7309 | expr.value = error_mark_node; | |
27bf414c JM |
7310 | break; |
7311 | } | |
7312 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7313 | "expected %<)%>"); | |
7314 | { | |
7315 | tree e1, e2; | |
9abfe986 AP |
7316 | e1 = groktypename (t1, NULL, NULL); |
7317 | e2 = groktypename (t2, NULL, NULL); | |
7318 | if (e1 == error_mark_node || e2 == error_mark_node) | |
7319 | { | |
7320 | expr.value = error_mark_node; | |
7321 | break; | |
7322 | } | |
27bf414c | 7323 | |
9abfe986 AP |
7324 | e1 = TYPE_MAIN_VARIANT (e1); |
7325 | e2 = TYPE_MAIN_VARIANT (e2); | |
27bf414c | 7326 | |
9a9d280e AS |
7327 | expr.value |
7328 | = comptypes (e1, e2) ? integer_one_node : integer_zero_node; | |
27bf414c JM |
7329 | } |
7330 | break; | |
d4a83c10 | 7331 | case RID_BUILTIN_COMPLEX: |
86785830 | 7332 | { |
9771b263 | 7333 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
7334 | c_expr_t *e1_p, *e2_p; |
7335 | ||
f90e8e2e AS |
7336 | c_parser_consume_token (parser); |
7337 | if (!c_parser_get_builtin_args (parser, | |
7338 | "__builtin_complex", | |
4e7d7b3d | 7339 | &cexpr_list, false)) |
f90e8e2e AS |
7340 | { |
7341 | expr.value = error_mark_node; | |
7342 | break; | |
7343 | } | |
7344 | ||
9771b263 | 7345 | if (vec_safe_length (cexpr_list) != 2) |
f90e8e2e AS |
7346 | { |
7347 | error_at (loc, "wrong number of arguments to " | |
7348 | "%<__builtin_complex%>"); | |
7349 | expr.value = error_mark_node; | |
7350 | break; | |
7351 | } | |
86785830 | 7352 | |
9771b263 DN |
7353 | e1_p = &(*cexpr_list)[0]; |
7354 | e2_p = &(*cexpr_list)[1]; | |
86785830 | 7355 | |
267bac10 | 7356 | *e1_p = convert_lvalue_to_rvalue (loc, *e1_p, true, true); |
86785830 AS |
7357 | if (TREE_CODE (e1_p->value) == EXCESS_PRECISION_EXPR) |
7358 | e1_p->value = convert (TREE_TYPE (e1_p->value), | |
7359 | TREE_OPERAND (e1_p->value, 0)); | |
267bac10 | 7360 | *e2_p = convert_lvalue_to_rvalue (loc, *e2_p, true, true); |
86785830 AS |
7361 | if (TREE_CODE (e2_p->value) == EXCESS_PRECISION_EXPR) |
7362 | e2_p->value = convert (TREE_TYPE (e2_p->value), | |
7363 | TREE_OPERAND (e2_p->value, 0)); | |
7364 | if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
7365 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
7366 | || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p->value)) | |
7367 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
7368 | { |
7369 | error_at (loc, "%<__builtin_complex%> operand " | |
7370 | "not of real binary floating-point type"); | |
7371 | expr.value = error_mark_node; | |
7372 | break; | |
7373 | } | |
86785830 AS |
7374 | if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p->value)) |
7375 | != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
7376 | { |
7377 | error_at (loc, | |
7378 | "%<__builtin_complex%> operands of different types"); | |
7379 | expr.value = error_mark_node; | |
7380 | break; | |
7381 | } | |
7382 | if (!flag_isoc99) | |
c1771a20 | 7383 | pedwarn (loc, OPT_Wpedantic, |
f90e8e2e AS |
7384 | "ISO C90 does not support complex types"); |
7385 | expr.value = build2 (COMPLEX_EXPR, | |
86785830 AS |
7386 | build_complex_type |
7387 | (TYPE_MAIN_VARIANT | |
7388 | (TREE_TYPE (e1_p->value))), | |
7389 | e1_p->value, e2_p->value); | |
f90e8e2e AS |
7390 | break; |
7391 | } | |
7392 | case RID_BUILTIN_SHUFFLE: | |
7393 | { | |
9771b263 | 7394 | vec<c_expr_t, va_gc> *cexpr_list; |
9243c51d JJ |
7395 | unsigned int i; |
7396 | c_expr_t *p; | |
86785830 | 7397 | |
f90e8e2e AS |
7398 | c_parser_consume_token (parser); |
7399 | if (!c_parser_get_builtin_args (parser, | |
7400 | "__builtin_shuffle", | |
4e7d7b3d | 7401 | &cexpr_list, false)) |
f90e8e2e AS |
7402 | { |
7403 | expr.value = error_mark_node; | |
7404 | break; | |
7405 | } | |
7406 | ||
9771b263 | 7407 | FOR_EACH_VEC_SAFE_ELT (cexpr_list, i, p) |
267bac10 | 7408 | *p = convert_lvalue_to_rvalue (loc, *p, true, true); |
9243c51d | 7409 | |
9771b263 | 7410 | if (vec_safe_length (cexpr_list) == 2) |
86785830 | 7411 | expr.value = |
2205ed25 | 7412 | c_build_vec_perm_expr |
9771b263 DN |
7413 | (loc, (*cexpr_list)[0].value, |
7414 | NULL_TREE, (*cexpr_list)[1].value); | |
86785830 | 7415 | |
9771b263 | 7416 | else if (vec_safe_length (cexpr_list) == 3) |
86785830 | 7417 | expr.value = |
2205ed25 | 7418 | c_build_vec_perm_expr |
9771b263 DN |
7419 | (loc, (*cexpr_list)[0].value, |
7420 | (*cexpr_list)[1].value, | |
7421 | (*cexpr_list)[2].value); | |
f90e8e2e AS |
7422 | else |
7423 | { | |
7424 | error_at (loc, "wrong number of arguments to " | |
7425 | "%<__builtin_shuffle%>"); | |
7426 | expr.value = error_mark_node; | |
7427 | } | |
7428 | break; | |
7429 | } | |
27bf414c JM |
7430 | case RID_AT_SELECTOR: |
7431 | gcc_assert (c_dialect_objc ()); | |
7432 | c_parser_consume_token (parser); | |
7433 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7434 | { | |
7435 | expr.value = error_mark_node; | |
27bf414c JM |
7436 | break; |
7437 | } | |
7438 | { | |
7439 | tree sel = c_parser_objc_selector_arg (parser); | |
7440 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7441 | "expected %<)%>"); | |
c2255bc4 | 7442 | expr.value = objc_build_selector_expr (loc, sel); |
27bf414c JM |
7443 | } |
7444 | break; | |
7445 | case RID_AT_PROTOCOL: | |
7446 | gcc_assert (c_dialect_objc ()); | |
7447 | c_parser_consume_token (parser); | |
7448 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7449 | { | |
7450 | expr.value = error_mark_node; | |
27bf414c JM |
7451 | break; |
7452 | } | |
7453 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7454 | { | |
7455 | c_parser_error (parser, "expected identifier"); | |
7456 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7457 | expr.value = error_mark_node; | |
27bf414c JM |
7458 | break; |
7459 | } | |
7460 | { | |
7461 | tree id = c_parser_peek_token (parser)->value; | |
7462 | c_parser_consume_token (parser); | |
7463 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7464 | "expected %<)%>"); | |
7465 | expr.value = objc_build_protocol_expr (id); | |
27bf414c JM |
7466 | } |
7467 | break; | |
7468 | case RID_AT_ENCODE: | |
7469 | /* Extension to support C-structures in the archiver. */ | |
7470 | gcc_assert (c_dialect_objc ()); | |
7471 | c_parser_consume_token (parser); | |
7472 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7473 | { | |
7474 | expr.value = error_mark_node; | |
27bf414c JM |
7475 | break; |
7476 | } | |
7477 | t1 = c_parser_type_name (parser); | |
7478 | if (t1 == NULL) | |
7479 | { | |
7480 | expr.value = error_mark_node; | |
27bf414c JM |
7481 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
7482 | break; | |
7483 | } | |
7484 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7485 | "expected %<)%>"); | |
7486 | { | |
928c19bb | 7487 | tree type = groktypename (t1, NULL, NULL); |
27bf414c | 7488 | expr.value = objc_build_encode_expr (type); |
27bf414c JM |
7489 | } |
7490 | break; | |
433cc7b0 TT |
7491 | case RID_GENERIC: |
7492 | expr = c_parser_generic_selection (parser); | |
7493 | break; | |
939b37da BI |
7494 | case RID_CILK_SPAWN: |
7495 | c_parser_consume_token (parser); | |
b72271b9 | 7496 | if (!flag_cilkplus) |
939b37da BI |
7497 | { |
7498 | error_at (loc, "-fcilkplus must be enabled to use " | |
7499 | "%<_Cilk_spawn%>"); | |
7500 | expr = c_parser_postfix_expression (parser); | |
7501 | expr.value = error_mark_node; | |
7502 | } | |
9a74f20c | 7503 | else if (c_parser_peek_token (parser)->keyword == RID_CILK_SPAWN) |
939b37da BI |
7504 | { |
7505 | error_at (loc, "consecutive %<_Cilk_spawn%> keywords " | |
7506 | "are not permitted"); | |
7507 | /* Now flush out all the _Cilk_spawns. */ | |
7508 | while (c_parser_peek_token (parser)->keyword == RID_CILK_SPAWN) | |
7509 | c_parser_consume_token (parser); | |
7510 | expr = c_parser_postfix_expression (parser); | |
7511 | } | |
7512 | else | |
7513 | { | |
7514 | expr = c_parser_postfix_expression (parser); | |
7515 | expr.value = build_cilk_spawn (loc, expr.value); | |
7516 | } | |
7517 | break; | |
27bf414c JM |
7518 | default: |
7519 | c_parser_error (parser, "expected expression"); | |
7520 | expr.value = error_mark_node; | |
27bf414c JM |
7521 | break; |
7522 | } | |
7523 | break; | |
7524 | case CPP_OPEN_SQUARE: | |
7525 | if (c_dialect_objc ()) | |
7526 | { | |
7527 | tree receiver, args; | |
7528 | c_parser_consume_token (parser); | |
7529 | receiver = c_parser_objc_receiver (parser); | |
7530 | args = c_parser_objc_message_args (parser); | |
7531 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
7532 | "expected %<]%>"); | |
eb345401 | 7533 | expr.value = objc_build_message_expr (receiver, args); |
27bf414c JM |
7534 | break; |
7535 | } | |
7536 | /* Else fall through to report error. */ | |
7537 | default: | |
7538 | c_parser_error (parser, "expected expression"); | |
7539 | expr.value = error_mark_node; | |
27bf414c JM |
7540 | break; |
7541 | } | |
c2255bc4 | 7542 | return c_parser_postfix_expression_after_primary (parser, loc, expr); |
27bf414c JM |
7543 | } |
7544 | ||
7545 | /* Parse a postfix expression after a parenthesized type name: the | |
7546 | brace-enclosed initializer of a compound literal, possibly followed | |
7547 | by some postfix operators. This is separate because it is not | |
7548 | possible to tell until after the type name whether a cast | |
7549 | expression has a cast or a compound literal, or whether the operand | |
7550 | of sizeof is a parenthesized type name or starts with a compound | |
24b97832 ILT |
7551 | literal. TYPE_LOC is the location where TYPE_NAME starts--the |
7552 | location of the first token after the parentheses around the type | |
7553 | name. */ | |
27bf414c JM |
7554 | |
7555 | static struct c_expr | |
7556 | c_parser_postfix_expression_after_paren_type (c_parser *parser, | |
24b97832 ILT |
7557 | struct c_type_name *type_name, |
7558 | location_t type_loc) | |
27bf414c JM |
7559 | { |
7560 | tree type; | |
7561 | struct c_expr init; | |
928c19bb | 7562 | bool non_const; |
27bf414c | 7563 | struct c_expr expr; |
c7412148 | 7564 | location_t start_loc; |
928c19bb JM |
7565 | tree type_expr = NULL_TREE; |
7566 | bool type_expr_const = true; | |
c2255bc4 | 7567 | check_compound_literal_type (type_loc, type_name); |
27bf414c | 7568 | start_init (NULL_TREE, NULL, 0); |
928c19bb | 7569 | type = groktypename (type_name, &type_expr, &type_expr_const); |
c7412148 | 7570 | start_loc = c_parser_peek_token (parser)->location; |
85cad37c | 7571 | if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type)) |
27bf414c | 7572 | { |
24b97832 | 7573 | error_at (type_loc, "compound literal has variable size"); |
27bf414c JM |
7574 | type = error_mark_node; |
7575 | } | |
7576 | init = c_parser_braced_init (parser, type, false); | |
7577 | finish_init (); | |
7578 | maybe_warn_string_init (type, init); | |
7579 | ||
36c5e70a BE |
7580 | if (type != error_mark_node |
7581 | && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)) | |
7582 | && current_function_decl) | |
7583 | { | |
7584 | error ("compound literal qualified by address-space qualifier"); | |
7585 | type = error_mark_node; | |
7586 | } | |
7587 | ||
fcf73884 | 7588 | if (!flag_isoc99) |
c1771a20 | 7589 | pedwarn (start_loc, OPT_Wpedantic, "ISO C90 forbids compound literals"); |
928c19bb JM |
7590 | non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR) |
7591 | ? CONSTRUCTOR_NON_CONST (init.value) | |
7592 | : init.original_code == C_MAYBE_CONST_EXPR); | |
7593 | non_const |= !type_expr_const; | |
c2255bc4 | 7594 | expr.value = build_compound_literal (start_loc, type, init.value, non_const); |
27bf414c | 7595 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7596 | expr.original_type = NULL; |
928c19bb JM |
7597 | if (type_expr) |
7598 | { | |
7599 | if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR) | |
7600 | { | |
7601 | gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE); | |
7602 | C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr; | |
7603 | } | |
7604 | else | |
7605 | { | |
7606 | gcc_assert (!non_const); | |
7607 | expr.value = build2 (C_MAYBE_CONST_EXPR, type, | |
7608 | type_expr, expr.value); | |
7609 | } | |
7610 | } | |
c2255bc4 | 7611 | return c_parser_postfix_expression_after_primary (parser, start_loc, expr); |
27bf414c JM |
7612 | } |
7613 | ||
1a4049e7 JJ |
7614 | /* Callback function for sizeof_pointer_memaccess_warning to compare |
7615 | types. */ | |
7616 | ||
7617 | static bool | |
7618 | sizeof_ptr_memacc_comptypes (tree type1, tree type2) | |
7619 | { | |
7620 | return comptypes (type1, type2) == 1; | |
7621 | } | |
7622 | ||
27bf414c | 7623 | /* Parse a postfix expression after the initial primary or compound |
c2255bc4 AH |
7624 | literal; that is, parse a series of postfix operators. |
7625 | ||
7626 | EXPR_LOC is the location of the primary expression. */ | |
27bf414c JM |
7627 | |
7628 | static struct c_expr | |
7629 | c_parser_postfix_expression_after_primary (c_parser *parser, | |
c2255bc4 | 7630 | location_t expr_loc, |
27bf414c JM |
7631 | struct c_expr expr) |
7632 | { | |
928c19bb | 7633 | struct c_expr orig_expr; |
bbbbb16a | 7634 | tree ident, idx; |
3a785c97 JJ |
7635 | location_t sizeof_arg_loc[3]; |
7636 | tree sizeof_arg[3]; | |
7637 | unsigned int i; | |
9771b263 | 7638 | vec<tree, va_gc> *exprlist; |
2ee028f1 | 7639 | vec<tree, va_gc> *origtypes = NULL; |
81e5eca8 MP |
7640 | vec<location_t> arg_loc = vNULL; |
7641 | ||
27bf414c JM |
7642 | while (true) |
7643 | { | |
c2255bc4 | 7644 | location_t op_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7645 | switch (c_parser_peek_token (parser)->type) |
7646 | { | |
7647 | case CPP_OPEN_SQUARE: | |
7648 | /* Array reference. */ | |
7649 | c_parser_consume_token (parser); | |
b72271b9 | 7650 | if (flag_cilkplus |
36536d79 BI |
7651 | && c_parser_peek_token (parser)->type == CPP_COLON) |
7652 | /* If we are here, then we have something like this: | |
7653 | Array [ : ] | |
7654 | */ | |
7655 | expr.value = c_parser_array_notation (expr_loc, parser, NULL_TREE, | |
7656 | expr.value); | |
7657 | else | |
7658 | { | |
7659 | idx = c_parser_expression (parser).value; | |
7660 | /* Here we have 3 options: | |
7661 | 1. Array [EXPR] -- Normal Array call. | |
7662 | 2. Array [EXPR : EXPR] -- Array notation without stride. | |
7663 | 3. Array [EXPR : EXPR : EXPR] -- Array notation with stride. | |
7664 | ||
7665 | For 1, we just handle it just like a normal array expression. | |
7666 | For 2 and 3 we handle it like we handle array notations. The | |
7667 | idx value we have above becomes the initial/start index. | |
7668 | */ | |
b72271b9 | 7669 | if (flag_cilkplus |
36536d79 BI |
7670 | && c_parser_peek_token (parser)->type == CPP_COLON) |
7671 | expr.value = c_parser_array_notation (expr_loc, parser, idx, | |
7672 | expr.value); | |
7673 | else | |
7674 | { | |
7675 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
7676 | "expected %<]%>"); | |
7677 | expr.value = build_array_ref (op_loc, expr.value, idx); | |
7678 | } | |
7679 | } | |
27bf414c | 7680 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7681 | expr.original_type = NULL; |
27bf414c JM |
7682 | break; |
7683 | case CPP_OPEN_PAREN: | |
7684 | /* Function call. */ | |
7685 | c_parser_consume_token (parser); | |
3a785c97 JJ |
7686 | for (i = 0; i < 3; i++) |
7687 | { | |
7688 | sizeof_arg[i] = NULL_TREE; | |
7689 | sizeof_arg_loc[i] = UNKNOWN_LOCATION; | |
7690 | } | |
27bf414c | 7691 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
bbbbb16a | 7692 | exprlist = NULL; |
27bf414c | 7693 | else |
1a4049e7 | 7694 | exprlist = c_parser_expr_list (parser, true, false, &origtypes, |
81e5eca8 MP |
7695 | sizeof_arg_loc, sizeof_arg, |
7696 | &arg_loc); | |
27bf414c JM |
7697 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
7698 | "expected %<)%>"); | |
928c19bb | 7699 | orig_expr = expr; |
ebfbbdc5 | 7700 | mark_exp_read (expr.value); |
3a785c97 JJ |
7701 | if (warn_sizeof_pointer_memaccess) |
7702 | sizeof_pointer_memaccess_warning (sizeof_arg_loc, | |
1a4049e7 | 7703 | expr.value, exprlist, |
3a785c97 | 7704 | sizeof_arg, |
1a4049e7 | 7705 | sizeof_ptr_memacc_comptypes); |
8edbfaa6 JJ |
7706 | expr.value |
7707 | = c_build_function_call_vec (expr_loc, arg_loc, expr.value, | |
7708 | exprlist, origtypes); | |
27bf414c | 7709 | expr.original_code = ERROR_MARK; |
928c19bb JM |
7710 | if (TREE_CODE (expr.value) == INTEGER_CST |
7711 | && TREE_CODE (orig_expr.value) == FUNCTION_DECL | |
7712 | && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL | |
7713 | && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P) | |
7714 | expr.original_code = C_MAYBE_CONST_EXPR; | |
6866c6e8 | 7715 | expr.original_type = NULL; |
9771b263 | 7716 | if (exprlist) |
bbbbb16a | 7717 | { |
c166b898 ILT |
7718 | release_tree_vector (exprlist); |
7719 | release_tree_vector (origtypes); | |
bbbbb16a | 7720 | } |
81e5eca8 | 7721 | arg_loc.release (); |
27bf414c JM |
7722 | break; |
7723 | case CPP_DOT: | |
7724 | /* Structure element reference. */ | |
7725 | c_parser_consume_token (parser); | |
c2255bc4 | 7726 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
7727 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7728 | ident = c_parser_peek_token (parser)->value; | |
7729 | else | |
7730 | { | |
7731 | c_parser_error (parser, "expected identifier"); | |
7732 | expr.value = error_mark_node; | |
7733 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7734 | expr.original_type = NULL; |
27bf414c JM |
7735 | return expr; |
7736 | } | |
7737 | c_parser_consume_token (parser); | |
c2255bc4 | 7738 | expr.value = build_component_ref (op_loc, expr.value, ident); |
27bf414c | 7739 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7740 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7741 | expr.original_type = NULL; | |
7742 | else | |
7743 | { | |
7744 | /* Remember the original type of a bitfield. */ | |
7745 | tree field = TREE_OPERAND (expr.value, 1); | |
7746 | if (TREE_CODE (field) != FIELD_DECL) | |
7747 | expr.original_type = NULL; | |
7748 | else | |
7749 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7750 | } | |
27bf414c JM |
7751 | break; |
7752 | case CPP_DEREF: | |
7753 | /* Structure element reference. */ | |
7754 | c_parser_consume_token (parser); | |
267bac10 | 7755 | expr = convert_lvalue_to_rvalue (expr_loc, expr, true, false); |
27bf414c JM |
7756 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7757 | ident = c_parser_peek_token (parser)->value; | |
7758 | else | |
7759 | { | |
7760 | c_parser_error (parser, "expected identifier"); | |
7761 | expr.value = error_mark_node; | |
7762 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7763 | expr.original_type = NULL; |
27bf414c JM |
7764 | return expr; |
7765 | } | |
7766 | c_parser_consume_token (parser); | |
c2255bc4 AH |
7767 | expr.value = build_component_ref (op_loc, |
7768 | build_indirect_ref (op_loc, | |
c9f9eb5d | 7769 | expr.value, |
dd865ef6 | 7770 | RO_ARROW), |
6a3799eb | 7771 | ident); |
27bf414c | 7772 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7773 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7774 | expr.original_type = NULL; | |
7775 | else | |
7776 | { | |
7777 | /* Remember the original type of a bitfield. */ | |
7778 | tree field = TREE_OPERAND (expr.value, 1); | |
7779 | if (TREE_CODE (field) != FIELD_DECL) | |
7780 | expr.original_type = NULL; | |
7781 | else | |
7782 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7783 | } | |
27bf414c JM |
7784 | break; |
7785 | case CPP_PLUS_PLUS: | |
7786 | /* Postincrement. */ | |
7787 | c_parser_consume_token (parser); | |
36536d79 | 7788 | /* If the expressions have array notations, we expand them. */ |
b72271b9 | 7789 | if (flag_cilkplus |
36536d79 BI |
7790 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) |
7791 | expr = fix_array_notation_expr (expr_loc, POSTINCREMENT_EXPR, expr); | |
7792 | else | |
7793 | { | |
7794 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7795 | expr.value = build_unary_op (op_loc, | |
7796 | POSTINCREMENT_EXPR, expr.value, 0); | |
7797 | } | |
27bf414c | 7798 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7799 | expr.original_type = NULL; |
27bf414c JM |
7800 | break; |
7801 | case CPP_MINUS_MINUS: | |
7802 | /* Postdecrement. */ | |
7803 | c_parser_consume_token (parser); | |
36536d79 | 7804 | /* If the expressions have array notations, we expand them. */ |
b72271b9 | 7805 | if (flag_cilkplus |
36536d79 BI |
7806 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) |
7807 | expr = fix_array_notation_expr (expr_loc, POSTDECREMENT_EXPR, expr); | |
7808 | else | |
7809 | { | |
7810 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7811 | expr.value = build_unary_op (op_loc, | |
7812 | POSTDECREMENT_EXPR, expr.value, 0); | |
7813 | } | |
27bf414c | 7814 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7815 | expr.original_type = NULL; |
27bf414c JM |
7816 | break; |
7817 | default: | |
7818 | return expr; | |
7819 | } | |
7820 | } | |
7821 | } | |
7822 | ||
7823 | /* Parse an expression (C90 6.3.17, C99 6.5.17). | |
7824 | ||
7825 | expression: | |
7826 | assignment-expression | |
7827 | expression , assignment-expression | |
7828 | */ | |
7829 | ||
7830 | static struct c_expr | |
7831 | c_parser_expression (c_parser *parser) | |
7832 | { | |
267bac10 | 7833 | location_t tloc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7834 | struct c_expr expr; |
7835 | expr = c_parser_expr_no_commas (parser, NULL); | |
267bac10 JM |
7836 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
7837 | expr = convert_lvalue_to_rvalue (tloc, expr, true, false); | |
27bf414c JM |
7838 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7839 | { | |
7840 | struct c_expr next; | |
056928b2 | 7841 | tree lhsval; |
c2255bc4 AH |
7842 | location_t loc = c_parser_peek_token (parser)->location; |
7843 | location_t expr_loc; | |
27bf414c | 7844 | c_parser_consume_token (parser); |
c2255bc4 | 7845 | expr_loc = c_parser_peek_token (parser)->location; |
056928b2 JJ |
7846 | lhsval = expr.value; |
7847 | while (TREE_CODE (lhsval) == COMPOUND_EXPR) | |
7848 | lhsval = TREE_OPERAND (lhsval, 1); | |
7849 | if (DECL_P (lhsval) || handled_component_p (lhsval)) | |
7850 | mark_exp_read (lhsval); | |
27bf414c | 7851 | next = c_parser_expr_no_commas (parser, NULL); |
267bac10 | 7852 | next = convert_lvalue_to_rvalue (expr_loc, next, true, false); |
c2255bc4 | 7853 | expr.value = build_compound_expr (loc, expr.value, next.value); |
27bf414c | 7854 | expr.original_code = COMPOUND_EXPR; |
81f40b79 | 7855 | expr.original_type = next.original_type; |
27bf414c JM |
7856 | } |
7857 | return expr; | |
7858 | } | |
7859 | ||
267bac10 JM |
7860 | /* Parse an expression and convert functions or arrays to pointers and |
7861 | lvalues to rvalues. */ | |
46bdb9cf JM |
7862 | |
7863 | static struct c_expr | |
7864 | c_parser_expression_conv (c_parser *parser) | |
7865 | { | |
7866 | struct c_expr expr; | |
c2255bc4 | 7867 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 7868 | expr = c_parser_expression (parser); |
267bac10 | 7869 | expr = convert_lvalue_to_rvalue (loc, expr, true, false); |
46bdb9cf JM |
7870 | return expr; |
7871 | } | |
7872 | ||
7873 | /* Parse a non-empty list of expressions. If CONVERT_P, convert | |
267bac10 | 7874 | functions and arrays to pointers and lvalues to rvalues. If |
81e5eca8 MP |
7875 | FOLD_P, fold the expressions. If LOCATIONS is non-NULL, save the |
7876 | locations of function arguments into this vector. | |
27bf414c JM |
7877 | |
7878 | nonempty-expr-list: | |
7879 | assignment-expression | |
7880 | nonempty-expr-list , assignment-expression | |
7881 | */ | |
7882 | ||
9771b263 | 7883 | static vec<tree, va_gc> * |
bbbbb16a | 7884 | c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p, |
9771b263 | 7885 | vec<tree, va_gc> **p_orig_types, |
81e5eca8 MP |
7886 | location_t *sizeof_arg_loc, tree *sizeof_arg, |
7887 | vec<location_t> *locations) | |
27bf414c | 7888 | { |
9771b263 DN |
7889 | vec<tree, va_gc> *ret; |
7890 | vec<tree, va_gc> *orig_types; | |
27bf414c | 7891 | struct c_expr expr; |
c2255bc4 | 7892 | location_t loc = c_parser_peek_token (parser)->location; |
3a785c97 JJ |
7893 | location_t cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
7894 | unsigned int idx = 0; | |
bbbbb16a | 7895 | |
c166b898 | 7896 | ret = make_tree_vector (); |
bbbbb16a ILT |
7897 | if (p_orig_types == NULL) |
7898 | orig_types = NULL; | |
7899 | else | |
c166b898 | 7900 | orig_types = make_tree_vector (); |
bbbbb16a | 7901 | |
1a4049e7 JJ |
7902 | if (sizeof_arg != NULL |
7903 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 7904 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
27bf414c | 7905 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 7906 | if (convert_p) |
267bac10 | 7907 | expr = convert_lvalue_to_rvalue (loc, expr, true, true); |
928c19bb JM |
7908 | if (fold_p) |
7909 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
7910 | ret->quick_push (expr.value); |
7911 | if (orig_types) | |
7912 | orig_types->quick_push (expr.original_type); | |
81e5eca8 MP |
7913 | if (locations) |
7914 | locations->safe_push (loc); | |
3a785c97 JJ |
7915 | if (sizeof_arg != NULL |
7916 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
7917 | && expr.original_code == SIZEOF_EXPR) | |
7918 | { | |
7919 | sizeof_arg[0] = c_last_sizeof_arg; | |
7920 | sizeof_arg_loc[0] = cur_sizeof_arg_loc; | |
7921 | } | |
27bf414c JM |
7922 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7923 | { | |
7924 | c_parser_consume_token (parser); | |
c2255bc4 | 7925 | loc = c_parser_peek_token (parser)->location; |
1a4049e7 JJ |
7926 | if (sizeof_arg != NULL |
7927 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 7928 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
1a4049e7 | 7929 | else |
3a785c97 | 7930 | cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
27bf414c | 7931 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 7932 | if (convert_p) |
267bac10 | 7933 | expr = convert_lvalue_to_rvalue (loc, expr, true, true); |
928c19bb JM |
7934 | if (fold_p) |
7935 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
7936 | vec_safe_push (ret, expr.value); |
7937 | if (orig_types) | |
7938 | vec_safe_push (orig_types, expr.original_type); | |
81e5eca8 MP |
7939 | if (locations) |
7940 | locations->safe_push (loc); | |
3a785c97 JJ |
7941 | if (++idx < 3 |
7942 | && sizeof_arg != NULL | |
7943 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
1a4049e7 JJ |
7944 | && expr.original_code == SIZEOF_EXPR) |
7945 | { | |
3a785c97 JJ |
7946 | sizeof_arg[idx] = c_last_sizeof_arg; |
7947 | sizeof_arg_loc[idx] = cur_sizeof_arg_loc; | |
1a4049e7 JJ |
7948 | } |
7949 | } | |
9771b263 | 7950 | if (orig_types) |
bbbbb16a | 7951 | *p_orig_types = orig_types; |
27bf414c JM |
7952 | return ret; |
7953 | } | |
27bf414c JM |
7954 | \f |
7955 | /* Parse Objective-C-specific constructs. */ | |
7956 | ||
7957 | /* Parse an objc-class-definition. | |
7958 | ||
7959 | objc-class-definition: | |
7960 | @interface identifier objc-superclass[opt] objc-protocol-refs[opt] | |
7961 | objc-class-instance-variables[opt] objc-methodprotolist @end | |
7962 | @implementation identifier objc-superclass[opt] | |
7963 | objc-class-instance-variables[opt] | |
7964 | @interface identifier ( identifier ) objc-protocol-refs[opt] | |
7965 | objc-methodprotolist @end | |
ec3e9f82 NP |
7966 | @interface identifier ( ) objc-protocol-refs[opt] |
7967 | objc-methodprotolist @end | |
27bf414c JM |
7968 | @implementation identifier ( identifier ) |
7969 | ||
7970 | objc-superclass: | |
7971 | : identifier | |
7972 | ||
7973 | "@interface identifier (" must start "@interface identifier ( | |
7974 | identifier ) ...": objc-methodprotolist in the first production may | |
0fa2e4df | 7975 | not start with a parenthesized identifier as a declarator of a data |
27bf414c JM |
7976 | definition with no declaration specifiers if the objc-superclass, |
7977 | objc-protocol-refs and objc-class-instance-variables are omitted. */ | |
7978 | ||
7979 | static void | |
c165dca7 | 7980 | c_parser_objc_class_definition (c_parser *parser, tree attributes) |
27bf414c JM |
7981 | { |
7982 | bool iface_p; | |
7983 | tree id1; | |
7984 | tree superclass; | |
7985 | if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE)) | |
7986 | iface_p = true; | |
7987 | else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION)) | |
7988 | iface_p = false; | |
7989 | else | |
7990 | gcc_unreachable (); | |
c165dca7 | 7991 | |
27bf414c JM |
7992 | c_parser_consume_token (parser); |
7993 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7994 | { | |
7995 | c_parser_error (parser, "expected identifier"); | |
7996 | return; | |
7997 | } | |
7998 | id1 = c_parser_peek_token (parser)->value; | |
7999 | c_parser_consume_token (parser); | |
8000 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8001 | { | |
ec3e9f82 | 8002 | /* We have a category or class extension. */ |
27bf414c JM |
8003 | tree id2; |
8004 | tree proto = NULL_TREE; | |
8005 | c_parser_consume_token (parser); | |
8006 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8007 | { | |
ec3e9f82 NP |
8008 | if (iface_p && c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
8009 | { | |
8010 | /* We have a class extension. */ | |
8011 | id2 = NULL_TREE; | |
8012 | } | |
8013 | else | |
8014 | { | |
8015 | c_parser_error (parser, "expected identifier or %<)%>"); | |
8016 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
8017 | return; | |
8018 | } | |
8019 | } | |
8020 | else | |
8021 | { | |
8022 | id2 = c_parser_peek_token (parser)->value; | |
8023 | c_parser_consume_token (parser); | |
27bf414c | 8024 | } |
27bf414c JM |
8025 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8026 | if (!iface_p) | |
8027 | { | |
8028 | objc_start_category_implementation (id1, id2); | |
8029 | return; | |
8030 | } | |
8031 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8032 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 8033 | objc_start_category_interface (id1, id2, proto, attributes); |
27bf414c JM |
8034 | c_parser_objc_methodprotolist (parser); |
8035 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
8036 | objc_finish_interface (); | |
8037 | return; | |
8038 | } | |
8039 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
8040 | { | |
8041 | c_parser_consume_token (parser); | |
8042 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8043 | { | |
8044 | c_parser_error (parser, "expected identifier"); | |
8045 | return; | |
8046 | } | |
8047 | superclass = c_parser_peek_token (parser)->value; | |
8048 | c_parser_consume_token (parser); | |
8049 | } | |
8050 | else | |
8051 | superclass = NULL_TREE; | |
8052 | if (iface_p) | |
8053 | { | |
8054 | tree proto = NULL_TREE; | |
8055 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8056 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 8057 | objc_start_class_interface (id1, superclass, proto, attributes); |
27bf414c JM |
8058 | } |
8059 | else | |
8060 | objc_start_class_implementation (id1, superclass); | |
8061 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
8062 | c_parser_objc_class_instance_variables (parser); | |
8063 | if (iface_p) | |
8064 | { | |
8065 | objc_continue_interface (); | |
8066 | c_parser_objc_methodprotolist (parser); | |
8067 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
8068 | objc_finish_interface (); | |
8069 | } | |
8070 | else | |
8071 | { | |
8072 | objc_continue_implementation (); | |
8073 | return; | |
8074 | } | |
8075 | } | |
8076 | ||
8077 | /* Parse objc-class-instance-variables. | |
8078 | ||
8079 | objc-class-instance-variables: | |
8080 | { objc-instance-variable-decl-list[opt] } | |
8081 | ||
8082 | objc-instance-variable-decl-list: | |
8083 | objc-visibility-spec | |
8084 | objc-instance-variable-decl ; | |
8085 | ; | |
8086 | objc-instance-variable-decl-list objc-visibility-spec | |
8087 | objc-instance-variable-decl-list objc-instance-variable-decl ; | |
8088 | objc-instance-variable-decl-list ; | |
8089 | ||
8090 | objc-visibility-spec: | |
8091 | @private | |
8092 | @protected | |
8093 | @public | |
8094 | ||
8095 | objc-instance-variable-decl: | |
8096 | struct-declaration | |
8097 | */ | |
8098 | ||
8099 | static void | |
8100 | c_parser_objc_class_instance_variables (c_parser *parser) | |
8101 | { | |
8102 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); | |
8103 | c_parser_consume_token (parser); | |
8104 | while (c_parser_next_token_is_not (parser, CPP_EOF)) | |
8105 | { | |
8106 | tree decls; | |
8107 | /* Parse any stray semicolon. */ | |
8108 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
8109 | { | |
c1771a20 | 8110 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
4e26ba90 | 8111 | "extra semicolon"); |
27bf414c JM |
8112 | c_parser_consume_token (parser); |
8113 | continue; | |
8114 | } | |
8115 | /* Stop if at the end of the instance variables. */ | |
8116 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
8117 | { | |
8118 | c_parser_consume_token (parser); | |
8119 | break; | |
8120 | } | |
8121 | /* Parse any objc-visibility-spec. */ | |
49b91f05 | 8122 | if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE)) |
27bf414c JM |
8123 | { |
8124 | c_parser_consume_token (parser); | |
c37d8c30 | 8125 | objc_set_visibility (OBJC_IVAR_VIS_PRIVATE); |
27bf414c JM |
8126 | continue; |
8127 | } | |
49b91f05 | 8128 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED)) |
27bf414c JM |
8129 | { |
8130 | c_parser_consume_token (parser); | |
c37d8c30 | 8131 | objc_set_visibility (OBJC_IVAR_VIS_PROTECTED); |
27bf414c JM |
8132 | continue; |
8133 | } | |
49b91f05 | 8134 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC)) |
27bf414c JM |
8135 | { |
8136 | c_parser_consume_token (parser); | |
c37d8c30 IS |
8137 | objc_set_visibility (OBJC_IVAR_VIS_PUBLIC); |
8138 | continue; | |
8139 | } | |
8140 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE)) | |
8141 | { | |
8142 | c_parser_consume_token (parser); | |
8143 | objc_set_visibility (OBJC_IVAR_VIS_PACKAGE); | |
27bf414c JM |
8144 | continue; |
8145 | } | |
bc4071dd RH |
8146 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
8147 | { | |
8148 | c_parser_pragma (parser, pragma_external); | |
8149 | continue; | |
8150 | } | |
8151 | ||
27bf414c JM |
8152 | /* Parse some comma-separated declarations. */ |
8153 | decls = c_parser_struct_declaration (parser); | |
4e26ba90 NP |
8154 | if (decls == NULL) |
8155 | { | |
8156 | /* There is a syntax error. We want to skip the offending | |
8157 | tokens up to the next ';' (included) or '}' | |
8158 | (excluded). */ | |
8159 | ||
8160 | /* First, skip manually a ')' or ']'. This is because they | |
8161 | reduce the nesting level, so c_parser_skip_until_found() | |
8162 | wouldn't be able to skip past them. */ | |
8163 | c_token *token = c_parser_peek_token (parser); | |
8164 | if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE) | |
8165 | c_parser_consume_token (parser); | |
8166 | ||
8167 | /* Then, do the standard skipping. */ | |
8168 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8169 | ||
8170 | /* We hopefully recovered. Start normal parsing again. */ | |
8171 | parser->error = false; | |
8172 | continue; | |
8173 | } | |
8174 | else | |
8175 | { | |
8176 | /* Comma-separated instance variables are chained together | |
8177 | in reverse order; add them one by one. */ | |
8178 | tree ivar = nreverse (decls); | |
8179 | for (; ivar; ivar = DECL_CHAIN (ivar)) | |
8180 | objc_add_instance_variable (copy_node (ivar)); | |
8181 | } | |
27bf414c JM |
8182 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
8183 | } | |
8184 | } | |
8185 | ||
8186 | /* Parse an objc-class-declaration. | |
8187 | ||
8188 | objc-class-declaration: | |
8189 | @class identifier-list ; | |
8190 | */ | |
8191 | ||
8192 | static void | |
8193 | c_parser_objc_class_declaration (c_parser *parser) | |
8194 | { | |
49b91f05 | 8195 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS)); |
27bf414c JM |
8196 | c_parser_consume_token (parser); |
8197 | /* Any identifiers, including those declared as type names, are OK | |
8198 | here. */ | |
8199 | while (true) | |
8200 | { | |
8201 | tree id; | |
8202 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8203 | { | |
8204 | c_parser_error (parser, "expected identifier"); | |
da57d1b9 NP |
8205 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); |
8206 | parser->error = false; | |
8207 | return; | |
27bf414c JM |
8208 | } |
8209 | id = c_parser_peek_token (parser)->value; | |
32dabdaf | 8210 | objc_declare_class (id); |
27bf414c JM |
8211 | c_parser_consume_token (parser); |
8212 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8213 | c_parser_consume_token (parser); | |
8214 | else | |
8215 | break; | |
8216 | } | |
8217 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
8218 | } |
8219 | ||
8220 | /* Parse an objc-alias-declaration. | |
8221 | ||
8222 | objc-alias-declaration: | |
8223 | @compatibility_alias identifier identifier ; | |
8224 | */ | |
8225 | ||
8226 | static void | |
8227 | c_parser_objc_alias_declaration (c_parser *parser) | |
8228 | { | |
8229 | tree id1, id2; | |
8230 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS)); | |
8231 | c_parser_consume_token (parser); | |
8232 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8233 | { | |
8234 | c_parser_error (parser, "expected identifier"); | |
8235 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8236 | return; | |
8237 | } | |
8238 | id1 = c_parser_peek_token (parser)->value; | |
8239 | c_parser_consume_token (parser); | |
8240 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8241 | { | |
8242 | c_parser_error (parser, "expected identifier"); | |
8243 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8244 | return; | |
8245 | } | |
8246 | id2 = c_parser_peek_token (parser)->value; | |
8247 | c_parser_consume_token (parser); | |
8248 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8249 | objc_declare_alias (id1, id2); | |
8250 | } | |
8251 | ||
8252 | /* Parse an objc-protocol-definition. | |
8253 | ||
8254 | objc-protocol-definition: | |
8255 | @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end | |
8256 | @protocol identifier-list ; | |
8257 | ||
8258 | "@protocol identifier ;" should be resolved as "@protocol | |
8259 | identifier-list ;": objc-methodprotolist may not start with a | |
8260 | semicolon in the first alternative if objc-protocol-refs are | |
8261 | omitted. */ | |
8262 | ||
8263 | static void | |
c165dca7 | 8264 | c_parser_objc_protocol_definition (c_parser *parser, tree attributes) |
27bf414c JM |
8265 | { |
8266 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL)); | |
c165dca7 | 8267 | |
27bf414c JM |
8268 | c_parser_consume_token (parser); |
8269 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8270 | { | |
8271 | c_parser_error (parser, "expected identifier"); | |
8272 | return; | |
8273 | } | |
8274 | if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
8275 | || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON) | |
8276 | { | |
27bf414c JM |
8277 | /* Any identifiers, including those declared as type names, are |
8278 | OK here. */ | |
8279 | while (true) | |
8280 | { | |
8281 | tree id; | |
8282 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8283 | { | |
8284 | c_parser_error (parser, "expected identifier"); | |
8285 | break; | |
8286 | } | |
8287 | id = c_parser_peek_token (parser)->value; | |
c59633d9 | 8288 | objc_declare_protocol (id, attributes); |
27bf414c JM |
8289 | c_parser_consume_token (parser); |
8290 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8291 | c_parser_consume_token (parser); | |
8292 | else | |
8293 | break; | |
8294 | } | |
8295 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
8296 | } |
8297 | else | |
8298 | { | |
8299 | tree id = c_parser_peek_token (parser)->value; | |
8300 | tree proto = NULL_TREE; | |
8301 | c_parser_consume_token (parser); | |
8302 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8303 | proto = c_parser_objc_protocol_refs (parser); | |
0bacb8c7 | 8304 | parser->objc_pq_context = true; |
c165dca7 | 8305 | objc_start_protocol (id, proto, attributes); |
27bf414c JM |
8306 | c_parser_objc_methodprotolist (parser); |
8307 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
0bacb8c7 | 8308 | parser->objc_pq_context = false; |
27bf414c JM |
8309 | objc_finish_interface (); |
8310 | } | |
8311 | } | |
8312 | ||
8313 | /* Parse an objc-method-type. | |
8314 | ||
8315 | objc-method-type: | |
8316 | + | |
8317 | - | |
27bf414c | 8318 | |
249a82c4 NP |
8319 | Return true if it is a class method (+) and false if it is |
8320 | an instance method (-). | |
8321 | */ | |
8322 | static inline bool | |
27bf414c JM |
8323 | c_parser_objc_method_type (c_parser *parser) |
8324 | { | |
8325 | switch (c_parser_peek_token (parser)->type) | |
8326 | { | |
8327 | case CPP_PLUS: | |
8328 | c_parser_consume_token (parser); | |
249a82c4 | 8329 | return true; |
27bf414c JM |
8330 | case CPP_MINUS: |
8331 | c_parser_consume_token (parser); | |
249a82c4 | 8332 | return false; |
27bf414c JM |
8333 | default: |
8334 | gcc_unreachable (); | |
8335 | } | |
8336 | } | |
8337 | ||
8338 | /* Parse an objc-method-definition. | |
8339 | ||
8340 | objc-method-definition: | |
8341 | objc-method-type objc-method-decl ;[opt] compound-statement | |
8342 | */ | |
8343 | ||
8344 | static void | |
8345 | c_parser_objc_method_definition (c_parser *parser) | |
8346 | { | |
249a82c4 | 8347 | bool is_class_method = c_parser_objc_method_type (parser); |
a04a722b | 8348 | tree decl, attributes = NULL_TREE, expr = NULL_TREE; |
0bacb8c7 | 8349 | parser->objc_pq_context = true; |
a04a722b JM |
8350 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
8351 | &expr); | |
f7e71da5 IS |
8352 | if (decl == error_mark_node) |
8353 | return; /* Bail here. */ | |
8354 | ||
27bf414c JM |
8355 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
8356 | { | |
8357 | c_parser_consume_token (parser); | |
c1771a20 | 8358 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 8359 | "extra semicolon in method definition specified"); |
27bf414c | 8360 | } |
f7e71da5 | 8361 | |
8f078c08 AP |
8362 | if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
8363 | { | |
8364 | c_parser_error (parser, "expected %<{%>"); | |
8365 | return; | |
8366 | } | |
f7e71da5 | 8367 | |
0bacb8c7 | 8368 | parser->objc_pq_context = false; |
a04a722b | 8369 | if (objc_start_method_definition (is_class_method, decl, attributes, expr)) |
45547c7f NP |
8370 | { |
8371 | add_stmt (c_parser_compound_statement (parser)); | |
8372 | objc_finish_method_definition (current_function_decl); | |
8373 | } | |
8374 | else | |
8375 | { | |
8376 | /* This code is executed when we find a method definition | |
a26d8862 NP |
8377 | outside of an @implementation context (or invalid for other |
8378 | reasons). Parse the method (to keep going) but do not emit | |
8379 | any code. | |
45547c7f NP |
8380 | */ |
8381 | c_parser_compound_statement (parser); | |
8382 | } | |
27bf414c JM |
8383 | } |
8384 | ||
8385 | /* Parse an objc-methodprotolist. | |
8386 | ||
8387 | objc-methodprotolist: | |
8388 | empty | |
8389 | objc-methodprotolist objc-methodproto | |
8390 | objc-methodprotolist declaration | |
8391 | objc-methodprotolist ; | |
92902b1b IS |
8392 | @optional |
8393 | @required | |
27bf414c JM |
8394 | |
8395 | The declaration is a data definition, which may be missing | |
8396 | declaration specifiers under the same rules and diagnostics as | |
8397 | other data definitions outside functions, and the stray semicolon | |
8398 | is diagnosed the same way as a stray semicolon outside a | |
8399 | function. */ | |
8400 | ||
8401 | static void | |
8402 | c_parser_objc_methodprotolist (c_parser *parser) | |
8403 | { | |
8404 | while (true) | |
8405 | { | |
8406 | /* The list is terminated by @end. */ | |
8407 | switch (c_parser_peek_token (parser)->type) | |
8408 | { | |
8409 | case CPP_SEMICOLON: | |
c1771a20 | 8410 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 8411 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
8412 | c_parser_consume_token (parser); |
8413 | break; | |
8414 | case CPP_PLUS: | |
8415 | case CPP_MINUS: | |
8416 | c_parser_objc_methodproto (parser); | |
8417 | break; | |
b9b58168 RH |
8418 | case CPP_PRAGMA: |
8419 | c_parser_pragma (parser, pragma_external); | |
8420 | break; | |
27bf414c JM |
8421 | case CPP_EOF: |
8422 | return; | |
8423 | default: | |
8424 | if (c_parser_next_token_is_keyword (parser, RID_AT_END)) | |
8425 | return; | |
668ea4b1 | 8426 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)) |
f614132b | 8427 | c_parser_objc_at_property_declaration (parser); |
92902b1b IS |
8428 | else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL)) |
8429 | { | |
8430 | objc_set_method_opt (true); | |
8431 | c_parser_consume_token (parser); | |
8432 | } | |
8433 | else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED)) | |
8434 | { | |
8435 | objc_set_method_opt (false); | |
8436 | c_parser_consume_token (parser); | |
8437 | } | |
8438 | else | |
8439 | c_parser_declaration_or_fndef (parser, false, false, true, | |
acf0174b | 8440 | false, true, NULL, vNULL); |
27bf414c JM |
8441 | break; |
8442 | } | |
8443 | } | |
8444 | } | |
8445 | ||
8446 | /* Parse an objc-methodproto. | |
8447 | ||
8448 | objc-methodproto: | |
8449 | objc-method-type objc-method-decl ; | |
8450 | */ | |
8451 | ||
8452 | static void | |
8453 | c_parser_objc_methodproto (c_parser *parser) | |
8454 | { | |
249a82c4 | 8455 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 8456 | tree decl, attributes = NULL_TREE; |
249a82c4 | 8457 | |
27bf414c | 8458 | /* Remember protocol qualifiers in prototypes. */ |
0bacb8c7 | 8459 | parser->objc_pq_context = true; |
a04a722b JM |
8460 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
8461 | NULL); | |
f7e71da5 | 8462 | /* Forget protocol qualifiers now. */ |
0bacb8c7 | 8463 | parser->objc_pq_context = false; |
f7e71da5 IS |
8464 | |
8465 | /* Do not allow the presence of attributes to hide an erroneous | |
8466 | method implementation in the interface section. */ | |
8467 | if (!c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
8468 | { | |
8469 | c_parser_error (parser, "expected %<;%>"); | |
8470 | return; | |
8471 | } | |
8472 | ||
8473 | if (decl != error_mark_node) | |
249a82c4 | 8474 | objc_add_method_declaration (is_class_method, decl, attributes); |
f7e71da5 | 8475 | |
27bf414c JM |
8476 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
8477 | } | |
8478 | ||
f7e71da5 IS |
8479 | /* If we are at a position that method attributes may be present, check that |
8480 | there are not any parsed already (a syntax error) and then collect any | |
8481 | specified at the current location. Finally, if new attributes were present, | |
8482 | check that the next token is legal ( ';' for decls and '{' for defs). */ | |
8483 | ||
8484 | static bool | |
8485 | c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes) | |
8486 | { | |
8487 | bool bad = false; | |
8488 | if (*attributes) | |
8489 | { | |
8490 | c_parser_error (parser, | |
8491 | "method attributes must be specified at the end only"); | |
8492 | *attributes = NULL_TREE; | |
8493 | bad = true; | |
8494 | } | |
8495 | ||
8496 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
8497 | *attributes = c_parser_attributes (parser); | |
8498 | ||
8499 | /* If there were no attributes here, just report any earlier error. */ | |
8500 | if (*attributes == NULL_TREE || bad) | |
8501 | return bad; | |
8502 | ||
8503 | /* If the attributes are followed by a ; or {, then just report any earlier | |
8504 | error. */ | |
8505 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
8506 | || c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
8507 | return bad; | |
8508 | ||
8509 | /* We've got attributes, but not at the end. */ | |
8510 | c_parser_error (parser, | |
8511 | "expected %<;%> or %<{%> after method attribute definition"); | |
8512 | return true; | |
8513 | } | |
8514 | ||
27bf414c JM |
8515 | /* Parse an objc-method-decl. |
8516 | ||
8517 | objc-method-decl: | |
8518 | ( objc-type-name ) objc-selector | |
8519 | objc-selector | |
8520 | ( objc-type-name ) objc-keyword-selector objc-optparmlist | |
8521 | objc-keyword-selector objc-optparmlist | |
f7e71da5 | 8522 | attributes |
27bf414c JM |
8523 | |
8524 | objc-keyword-selector: | |
8525 | objc-keyword-decl | |
8526 | objc-keyword-selector objc-keyword-decl | |
8527 | ||
8528 | objc-keyword-decl: | |
8529 | objc-selector : ( objc-type-name ) identifier | |
8530 | objc-selector : identifier | |
8531 | : ( objc-type-name ) identifier | |
8532 | : identifier | |
8533 | ||
8534 | objc-optparmlist: | |
8535 | objc-optparms objc-optellipsis | |
8536 | ||
8537 | objc-optparms: | |
8538 | empty | |
8539 | objc-opt-parms , parameter-declaration | |
8540 | ||
8541 | objc-optellipsis: | |
8542 | empty | |
8543 | , ... | |
8544 | */ | |
8545 | ||
8546 | static tree | |
a04a722b JM |
8547 | c_parser_objc_method_decl (c_parser *parser, bool is_class_method, |
8548 | tree *attributes, tree *expr) | |
27bf414c JM |
8549 | { |
8550 | tree type = NULL_TREE; | |
8551 | tree sel; | |
8552 | tree parms = NULL_TREE; | |
dbb74365 | 8553 | bool ellipsis = false; |
f7e71da5 | 8554 | bool attr_err = false; |
dbb74365 | 8555 | |
f7e71da5 | 8556 | *attributes = NULL_TREE; |
27bf414c JM |
8557 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
8558 | { | |
8559 | c_parser_consume_token (parser); | |
8560 | type = c_parser_objc_type_name (parser); | |
8561 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8562 | } | |
8563 | sel = c_parser_objc_selector (parser); | |
8564 | /* If there is no selector, or a colon follows, we have an | |
8565 | objc-keyword-selector. If there is a selector, and a colon does | |
8566 | not follow, that selector ends the objc-method-decl. */ | |
8567 | if (!sel || c_parser_next_token_is (parser, CPP_COLON)) | |
8568 | { | |
8569 | tree tsel = sel; | |
8570 | tree list = NULL_TREE; | |
27bf414c JM |
8571 | while (true) |
8572 | { | |
8573 | tree atype = NULL_TREE, id, keyworddecl; | |
f7e71da5 | 8574 | tree param_attr = NULL_TREE; |
27bf414c JM |
8575 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
8576 | break; | |
8577 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8578 | { | |
8579 | c_parser_consume_token (parser); | |
8580 | atype = c_parser_objc_type_name (parser); | |
8581 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
8582 | "expected %<)%>"); | |
8583 | } | |
f7e71da5 IS |
8584 | /* New ObjC allows attributes on method parameters. */ |
8585 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
8586 | param_attr = c_parser_attributes (parser); | |
27bf414c JM |
8587 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
8588 | { | |
8589 | c_parser_error (parser, "expected identifier"); | |
8590 | return error_mark_node; | |
8591 | } | |
8592 | id = c_parser_peek_token (parser)->value; | |
8593 | c_parser_consume_token (parser); | |
f7e71da5 | 8594 | keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr); |
27bf414c JM |
8595 | list = chainon (list, keyworddecl); |
8596 | tsel = c_parser_objc_selector (parser); | |
8597 | if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8598 | break; | |
8599 | } | |
f7e71da5 IS |
8600 | |
8601 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
8602 | ||
27bf414c JM |
8603 | /* Parse the optional parameter list. Optional Objective-C |
8604 | method parameters follow the C syntax, and may include '...' | |
8605 | to denote a variable number of arguments. */ | |
8606 | parms = make_node (TREE_LIST); | |
27bf414c JM |
8607 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
8608 | { | |
8609 | struct c_parm *parm; | |
8610 | c_parser_consume_token (parser); | |
8611 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
8612 | { | |
8613 | ellipsis = true; | |
8614 | c_parser_consume_token (parser); | |
f7e71da5 IS |
8615 | attr_err |= c_parser_objc_maybe_method_attributes |
8616 | (parser, attributes) ; | |
27bf414c JM |
8617 | break; |
8618 | } | |
8619 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
8620 | if (parm == NULL) | |
8621 | break; | |
8622 | parms = chainon (parms, | |
a04a722b | 8623 | build_tree_list (NULL_TREE, grokparm (parm, expr))); |
27bf414c | 8624 | } |
27bf414c JM |
8625 | sel = list; |
8626 | } | |
f7e71da5 IS |
8627 | else |
8628 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
8629 | ||
8630 | if (sel == NULL) | |
8631 | { | |
8632 | c_parser_error (parser, "objective-c method declaration is expected"); | |
8633 | return error_mark_node; | |
8634 | } | |
8635 | ||
8636 | if (attr_err) | |
8637 | return error_mark_node; | |
8638 | ||
249a82c4 | 8639 | return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis); |
27bf414c JM |
8640 | } |
8641 | ||
8642 | /* Parse an objc-type-name. | |
8643 | ||
8644 | objc-type-name: | |
8645 | objc-type-qualifiers[opt] type-name | |
8646 | objc-type-qualifiers[opt] | |
8647 | ||
8648 | objc-type-qualifiers: | |
8649 | objc-type-qualifier | |
8650 | objc-type-qualifiers objc-type-qualifier | |
8651 | ||
8652 | objc-type-qualifier: one of | |
8653 | in out inout bycopy byref oneway | |
8654 | */ | |
8655 | ||
8656 | static tree | |
8657 | c_parser_objc_type_name (c_parser *parser) | |
8658 | { | |
8659 | tree quals = NULL_TREE; | |
d75d71e0 | 8660 | struct c_type_name *type_name = NULL; |
27bf414c JM |
8661 | tree type = NULL_TREE; |
8662 | while (true) | |
8663 | { | |
8664 | c_token *token = c_parser_peek_token (parser); | |
8665 | if (token->type == CPP_KEYWORD | |
8666 | && (token->keyword == RID_IN | |
8667 | || token->keyword == RID_OUT | |
8668 | || token->keyword == RID_INOUT | |
8669 | || token->keyword == RID_BYCOPY | |
8670 | || token->keyword == RID_BYREF | |
8671 | || token->keyword == RID_ONEWAY)) | |
8672 | { | |
71fc71d8 | 8673 | quals = chainon (build_tree_list (NULL_TREE, token->value), quals); |
27bf414c JM |
8674 | c_parser_consume_token (parser); |
8675 | } | |
8676 | else | |
8677 | break; | |
8678 | } | |
29ce73cb | 8679 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
d75d71e0 ILT |
8680 | type_name = c_parser_type_name (parser); |
8681 | if (type_name) | |
928c19bb | 8682 | type = groktypename (type_name, NULL, NULL); |
046608a3 NP |
8683 | |
8684 | /* If the type is unknown, and error has already been produced and | |
8685 | we need to recover from the error. In that case, use NULL_TREE | |
8686 | for the type, as if no type had been specified; this will use the | |
8687 | default type ('id') which is good for error recovery. */ | |
8688 | if (type == error_mark_node) | |
8689 | type = NULL_TREE; | |
8690 | ||
27bf414c JM |
8691 | return build_tree_list (quals, type); |
8692 | } | |
8693 | ||
8694 | /* Parse objc-protocol-refs. | |
8695 | ||
8696 | objc-protocol-refs: | |
8697 | < identifier-list > | |
8698 | */ | |
8699 | ||
8700 | static tree | |
8701 | c_parser_objc_protocol_refs (c_parser *parser) | |
8702 | { | |
8703 | tree list = NULL_TREE; | |
8704 | gcc_assert (c_parser_next_token_is (parser, CPP_LESS)); | |
8705 | c_parser_consume_token (parser); | |
8706 | /* Any identifiers, including those declared as type names, are OK | |
8707 | here. */ | |
8708 | while (true) | |
8709 | { | |
8710 | tree id; | |
8711 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8712 | { | |
8713 | c_parser_error (parser, "expected identifier"); | |
8714 | break; | |
8715 | } | |
8716 | id = c_parser_peek_token (parser)->value; | |
8717 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
8718 | c_parser_consume_token (parser); | |
8719 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8720 | c_parser_consume_token (parser); | |
8721 | else | |
8722 | break; | |
8723 | } | |
8724 | c_parser_require (parser, CPP_GREATER, "expected %<>%>"); | |
8725 | return list; | |
8726 | } | |
8727 | ||
437c2322 | 8728 | /* Parse an objc-try-catch-finally-statement. |
27bf414c | 8729 | |
437c2322 | 8730 | objc-try-catch-finally-statement: |
27bf414c JM |
8731 | @try compound-statement objc-catch-list[opt] |
8732 | @try compound-statement objc-catch-list[opt] @finally compound-statement | |
8733 | ||
8734 | objc-catch-list: | |
437c2322 NP |
8735 | @catch ( objc-catch-parameter-declaration ) compound-statement |
8736 | objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement | |
8737 | ||
8738 | objc-catch-parameter-declaration: | |
8739 | parameter-declaration | |
8740 | '...' | |
8741 | ||
8742 | where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS. | |
8743 | ||
8744 | PS: This function is identical to cp_parser_objc_try_catch_finally_statement | |
8745 | for C++. Keep them in sync. */ | |
27bf414c JM |
8746 | |
8747 | static void | |
437c2322 | 8748 | c_parser_objc_try_catch_finally_statement (c_parser *parser) |
27bf414c | 8749 | { |
437c2322 | 8750 | location_t location; |
27bf414c | 8751 | tree stmt; |
437c2322 | 8752 | |
49b91f05 | 8753 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY)); |
27bf414c | 8754 | c_parser_consume_token (parser); |
437c2322 | 8755 | location = c_parser_peek_token (parser)->location; |
46270f14 | 8756 | objc_maybe_warn_exceptions (location); |
27bf414c | 8757 | stmt = c_parser_compound_statement (parser); |
437c2322 NP |
8758 | objc_begin_try_stmt (location, stmt); |
8759 | ||
49b91f05 | 8760 | while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH)) |
27bf414c JM |
8761 | { |
8762 | struct c_parm *parm; | |
437c2322 NP |
8763 | tree parameter_declaration = error_mark_node; |
8764 | bool seen_open_paren = false; | |
8765 | ||
27bf414c JM |
8766 | c_parser_consume_token (parser); |
8767 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
437c2322 NP |
8768 | seen_open_paren = true; |
8769 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
27bf414c | 8770 | { |
437c2322 NP |
8771 | /* We have "@catch (...)" (where the '...' are literally |
8772 | what is in the code). Skip the '...'. | |
8773 | parameter_declaration is set to NULL_TREE, and | |
8774 | objc_being_catch_clauses() knows that that means | |
8775 | '...'. */ | |
8776 | c_parser_consume_token (parser); | |
8777 | parameter_declaration = NULL_TREE; | |
27bf414c | 8778 | } |
437c2322 NP |
8779 | else |
8780 | { | |
8781 | /* We have "@catch (NSException *exception)" or something | |
8782 | like that. Parse the parameter declaration. */ | |
8783 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
8784 | if (parm == NULL) | |
8785 | parameter_declaration = error_mark_node; | |
8786 | else | |
a04a722b | 8787 | parameter_declaration = grokparm (parm, NULL); |
437c2322 NP |
8788 | } |
8789 | if (seen_open_paren) | |
8790 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8791 | else | |
8792 | { | |
8793 | /* If there was no open parenthesis, we are recovering from | |
8794 | an error, and we are trying to figure out what mistake | |
8795 | the user has made. */ | |
8796 | ||
8797 | /* If there is an immediate closing parenthesis, the user | |
8798 | probably forgot the opening one (ie, they typed "@catch | |
8799 | NSException *e)". Parse the closing parenthesis and keep | |
8800 | going. */ | |
8801 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
8802 | c_parser_consume_token (parser); | |
8803 | ||
8804 | /* If these is no immediate closing parenthesis, the user | |
8805 | probably doesn't know that parenthesis are required at | |
8806 | all (ie, they typed "@catch NSException *e"). So, just | |
8807 | forget about the closing parenthesis and keep going. */ | |
8808 | } | |
8809 | objc_begin_catch_clause (parameter_declaration); | |
27bf414c JM |
8810 | if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
8811 | c_parser_compound_statement_nostart (parser); | |
8812 | objc_finish_catch_clause (); | |
8813 | } | |
8814 | if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY)) | |
8815 | { | |
27bf414c | 8816 | c_parser_consume_token (parser); |
437c2322 NP |
8817 | location = c_parser_peek_token (parser)->location; |
8818 | stmt = c_parser_compound_statement (parser); | |
8819 | objc_build_finally_clause (location, stmt); | |
27bf414c JM |
8820 | } |
8821 | objc_finish_try_stmt (); | |
8822 | } | |
8823 | ||
8824 | /* Parse an objc-synchronized-statement. | |
8825 | ||
8826 | objc-synchronized-statement: | |
8827 | @synchronized ( expression ) compound-statement | |
8828 | */ | |
8829 | ||
8830 | static void | |
8831 | c_parser_objc_synchronized_statement (c_parser *parser) | |
8832 | { | |
8833 | location_t loc; | |
8834 | tree expr, stmt; | |
8835 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED)); | |
8836 | c_parser_consume_token (parser); | |
8837 | loc = c_parser_peek_token (parser)->location; | |
46270f14 | 8838 | objc_maybe_warn_exceptions (loc); |
27bf414c JM |
8839 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
8840 | { | |
267bac10 JM |
8841 | struct c_expr ce = c_parser_expression (parser); |
8842 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
8843 | expr = ce.value; | |
928c19bb | 8844 | expr = c_fully_fold (expr, false, NULL); |
27bf414c JM |
8845 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8846 | } | |
8847 | else | |
8848 | expr = error_mark_node; | |
8849 | stmt = c_parser_compound_statement (parser); | |
8850 | objc_build_synchronized (loc, expr, stmt); | |
8851 | } | |
8852 | ||
8853 | /* Parse an objc-selector; return NULL_TREE without an error if the | |
8854 | next token is not an objc-selector. | |
8855 | ||
8856 | objc-selector: | |
8857 | identifier | |
8858 | one of | |
8859 | enum struct union if else while do for switch case default | |
8860 | break continue return goto asm sizeof typeof __alignof | |
8861 | unsigned long const short volatile signed restrict _Complex | |
8862 | in out inout bycopy byref oneway int char float double void _Bool | |
267bac10 | 8863 | _Atomic |
27bf414c JM |
8864 | |
8865 | ??? Why this selection of keywords but not, for example, storage | |
8866 | class specifiers? */ | |
8867 | ||
8868 | static tree | |
8869 | c_parser_objc_selector (c_parser *parser) | |
8870 | { | |
8871 | c_token *token = c_parser_peek_token (parser); | |
8872 | tree value = token->value; | |
8873 | if (token->type == CPP_NAME) | |
8874 | { | |
8875 | c_parser_consume_token (parser); | |
8876 | return value; | |
8877 | } | |
8878 | if (token->type != CPP_KEYWORD) | |
8879 | return NULL_TREE; | |
8880 | switch (token->keyword) | |
8881 | { | |
8882 | case RID_ENUM: | |
8883 | case RID_STRUCT: | |
8884 | case RID_UNION: | |
8885 | case RID_IF: | |
8886 | case RID_ELSE: | |
8887 | case RID_WHILE: | |
8888 | case RID_DO: | |
8889 | case RID_FOR: | |
8890 | case RID_SWITCH: | |
8891 | case RID_CASE: | |
8892 | case RID_DEFAULT: | |
8893 | case RID_BREAK: | |
8894 | case RID_CONTINUE: | |
8895 | case RID_RETURN: | |
8896 | case RID_GOTO: | |
8897 | case RID_ASM: | |
8898 | case RID_SIZEOF: | |
8899 | case RID_TYPEOF: | |
8900 | case RID_ALIGNOF: | |
8901 | case RID_UNSIGNED: | |
8902 | case RID_LONG: | |
a6766312 | 8903 | case RID_INT128: |
27bf414c JM |
8904 | case RID_CONST: |
8905 | case RID_SHORT: | |
8906 | case RID_VOLATILE: | |
8907 | case RID_SIGNED: | |
8908 | case RID_RESTRICT: | |
8909 | case RID_COMPLEX: | |
8910 | case RID_IN: | |
8911 | case RID_OUT: | |
8912 | case RID_INOUT: | |
8913 | case RID_BYCOPY: | |
8914 | case RID_BYREF: | |
8915 | case RID_ONEWAY: | |
8916 | case RID_INT: | |
8917 | case RID_CHAR: | |
8918 | case RID_FLOAT: | |
8919 | case RID_DOUBLE: | |
8920 | case RID_VOID: | |
8921 | case RID_BOOL: | |
267bac10 | 8922 | case RID_ATOMIC: |
38b7bc7f | 8923 | case RID_AUTO_TYPE: |
27bf414c JM |
8924 | c_parser_consume_token (parser); |
8925 | return value; | |
8926 | default: | |
8927 | return NULL_TREE; | |
8928 | } | |
8929 | } | |
8930 | ||
8931 | /* Parse an objc-selector-arg. | |
8932 | ||
8933 | objc-selector-arg: | |
8934 | objc-selector | |
8935 | objc-keywordname-list | |
8936 | ||
8937 | objc-keywordname-list: | |
8938 | objc-keywordname | |
8939 | objc-keywordname-list objc-keywordname | |
8940 | ||
8941 | objc-keywordname: | |
8942 | objc-selector : | |
8943 | : | |
8944 | */ | |
8945 | ||
8946 | static tree | |
8947 | c_parser_objc_selector_arg (c_parser *parser) | |
8948 | { | |
8949 | tree sel = c_parser_objc_selector (parser); | |
8950 | tree list = NULL_TREE; | |
8951 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8952 | return sel; | |
8953 | while (true) | |
8954 | { | |
8955 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
8956 | return list; | |
8957 | list = chainon (list, build_tree_list (sel, NULL_TREE)); | |
8958 | sel = c_parser_objc_selector (parser); | |
8959 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8960 | break; | |
8961 | } | |
8962 | return list; | |
8963 | } | |
8964 | ||
8965 | /* Parse an objc-receiver. | |
8966 | ||
8967 | objc-receiver: | |
8968 | expression | |
8969 | class-name | |
8970 | type-name | |
8971 | */ | |
8972 | ||
8973 | static tree | |
8974 | c_parser_objc_receiver (c_parser *parser) | |
8975 | { | |
267bac10 JM |
8976 | location_t loc = c_parser_peek_token (parser)->location; |
8977 | ||
27bf414c JM |
8978 | if (c_parser_peek_token (parser)->type == CPP_NAME |
8979 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME | |
8980 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
8981 | { | |
8982 | tree id = c_parser_peek_token (parser)->value; | |
8983 | c_parser_consume_token (parser); | |
8984 | return objc_get_class_reference (id); | |
8985 | } | |
267bac10 JM |
8986 | struct c_expr ce = c_parser_expression (parser); |
8987 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
8988 | return c_fully_fold (ce.value, false, NULL); | |
27bf414c JM |
8989 | } |
8990 | ||
8991 | /* Parse objc-message-args. | |
8992 | ||
8993 | objc-message-args: | |
8994 | objc-selector | |
8995 | objc-keywordarg-list | |
8996 | ||
8997 | objc-keywordarg-list: | |
8998 | objc-keywordarg | |
8999 | objc-keywordarg-list objc-keywordarg | |
9000 | ||
9001 | objc-keywordarg: | |
9002 | objc-selector : objc-keywordexpr | |
9003 | : objc-keywordexpr | |
9004 | */ | |
9005 | ||
9006 | static tree | |
9007 | c_parser_objc_message_args (c_parser *parser) | |
9008 | { | |
9009 | tree sel = c_parser_objc_selector (parser); | |
9010 | tree list = NULL_TREE; | |
9011 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9012 | return sel; | |
9013 | while (true) | |
9014 | { | |
9015 | tree keywordexpr; | |
9016 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
0a7d7dea | 9017 | return error_mark_node; |
27bf414c JM |
9018 | keywordexpr = c_parser_objc_keywordexpr (parser); |
9019 | list = chainon (list, build_tree_list (sel, keywordexpr)); | |
9020 | sel = c_parser_objc_selector (parser); | |
9021 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9022 | break; | |
9023 | } | |
9024 | return list; | |
9025 | } | |
9026 | ||
9027 | /* Parse an objc-keywordexpr. | |
9028 | ||
9029 | objc-keywordexpr: | |
9030 | nonempty-expr-list | |
9031 | */ | |
9032 | ||
9033 | static tree | |
9034 | c_parser_objc_keywordexpr (c_parser *parser) | |
9035 | { | |
bbbbb16a | 9036 | tree ret; |
9771b263 | 9037 | vec<tree, va_gc> *expr_list = c_parser_expr_list (parser, true, true, |
81e5eca8 | 9038 | NULL, NULL, NULL, NULL); |
9771b263 | 9039 | if (vec_safe_length (expr_list) == 1) |
27bf414c JM |
9040 | { |
9041 | /* Just return the expression, remove a level of | |
9042 | indirection. */ | |
9771b263 | 9043 | ret = (*expr_list)[0]; |
27bf414c JM |
9044 | } |
9045 | else | |
9046 | { | |
9047 | /* We have a comma expression, we will collapse later. */ | |
c166b898 | 9048 | ret = build_tree_list_vec (expr_list); |
27bf414c | 9049 | } |
c166b898 | 9050 | release_tree_vector (expr_list); |
bbbbb16a | 9051 | return ret; |
27bf414c JM |
9052 | } |
9053 | ||
c165dca7 IS |
9054 | /* A check, needed in several places, that ObjC interface, implementation or |
9055 | method definitions are not prefixed by incorrect items. */ | |
9056 | static bool | |
9057 | c_parser_objc_diagnose_bad_element_prefix (c_parser *parser, | |
9058 | struct c_declspecs *specs) | |
9059 | { | |
9e5b2115 PB |
9060 | if (!specs->declspecs_seen_p || specs->non_sc_seen_p |
9061 | || specs->typespec_kind != ctsk_none) | |
c165dca7 IS |
9062 | { |
9063 | c_parser_error (parser, | |
9064 | "no type or storage class may be specified here,"); | |
9065 | c_parser_skip_to_end_of_block_or_statement (parser); | |
9066 | return true; | |
9067 | } | |
9068 | return false; | |
9069 | } | |
668ea4b1 | 9070 | |
f614132b | 9071 | /* Parse an Objective-C @property declaration. The syntax is: |
668ea4b1 | 9072 | |
f614132b NP |
9073 | objc-property-declaration: |
9074 | '@property' objc-property-attributes[opt] struct-declaration ; | |
668ea4b1 | 9075 | |
f614132b NP |
9076 | objc-property-attributes: |
9077 | '(' objc-property-attribute-list ')' | |
9078 | ||
9079 | objc-property-attribute-list: | |
9080 | objc-property-attribute | |
9081 | objc-property-attribute-list, objc-property-attribute | |
9082 | ||
9083 | objc-property-attribute | |
9084 | 'getter' = identifier | |
9085 | 'setter' = identifier | |
9086 | 'readonly' | |
9087 | 'readwrite' | |
9088 | 'assign' | |
9089 | 'retain' | |
9090 | 'copy' | |
9091 | 'nonatomic' | |
9092 | ||
9093 | For example: | |
9094 | @property NSString *name; | |
9095 | @property (readonly) id object; | |
9096 | @property (retain, nonatomic, getter=getTheName) id name; | |
9097 | @property int a, b, c; | |
9098 | ||
9099 | PS: This function is identical to cp_parser_objc_at_propery_declaration | |
200290f2 | 9100 | for C++. Keep them in sync. */ |
668ea4b1 | 9101 | static void |
f614132b | 9102 | c_parser_objc_at_property_declaration (c_parser *parser) |
668ea4b1 | 9103 | { |
200290f2 NP |
9104 | /* The following variables hold the attributes of the properties as |
9105 | parsed. They are 'false' or 'NULL_TREE' if the attribute was not | |
9106 | seen. When we see an attribute, we set them to 'true' (if they | |
9107 | are boolean properties) or to the identifier (if they have an | |
9108 | argument, ie, for getter and setter). Note that here we only | |
9109 | parse the list of attributes, check the syntax and accumulate the | |
9110 | attributes that we find. objc_add_property_declaration() will | |
9111 | then process the information. */ | |
9112 | bool property_assign = false; | |
9113 | bool property_copy = false; | |
9114 | tree property_getter_ident = NULL_TREE; | |
9115 | bool property_nonatomic = false; | |
9116 | bool property_readonly = false; | |
9117 | bool property_readwrite = false; | |
9118 | bool property_retain = false; | |
9119 | tree property_setter_ident = NULL_TREE; | |
200290f2 NP |
9120 | |
9121 | /* 'properties' is the list of properties that we read. Usually a | |
9122 | single one, but maybe more (eg, in "@property int a, b, c;" there | |
9123 | are three). */ | |
f614132b NP |
9124 | tree properties; |
9125 | location_t loc; | |
200290f2 | 9126 | |
f614132b NP |
9127 | loc = c_parser_peek_token (parser)->location; |
9128 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)); | |
668ea4b1 | 9129 | |
f614132b | 9130 | c_parser_consume_token (parser); /* Eat '@property'. */ |
668ea4b1 | 9131 | |
f614132b NP |
9132 | /* Parse the optional attribute list... */ |
9133 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
668ea4b1 | 9134 | { |
f614132b NP |
9135 | /* Eat the '(' */ |
9136 | c_parser_consume_token (parser); | |
9137 | ||
9138 | /* Property attribute keywords are valid now. */ | |
9139 | parser->objc_property_attr_context = true; | |
9140 | ||
9141 | while (true) | |
668ea4b1 | 9142 | { |
f614132b NP |
9143 | bool syntax_error = false; |
9144 | c_token *token = c_parser_peek_token (parser); | |
9145 | enum rid keyword; | |
9146 | ||
9147 | if (token->type != CPP_KEYWORD) | |
9148 | { | |
9149 | if (token->type == CPP_CLOSE_PAREN) | |
9150 | c_parser_error (parser, "expected identifier"); | |
9151 | else | |
9152 | { | |
9153 | c_parser_consume_token (parser); | |
9154 | c_parser_error (parser, "unknown property attribute"); | |
9155 | } | |
9156 | break; | |
9157 | } | |
9158 | keyword = token->keyword; | |
200290f2 | 9159 | c_parser_consume_token (parser); |
f614132b NP |
9160 | switch (keyword) |
9161 | { | |
200290f2 | 9162 | case RID_ASSIGN: property_assign = true; break; |
200290f2 NP |
9163 | case RID_COPY: property_copy = true; break; |
9164 | case RID_NONATOMIC: property_nonatomic = true; break; | |
9165 | case RID_READONLY: property_readonly = true; break; | |
9166 | case RID_READWRITE: property_readwrite = true; break; | |
9167 | case RID_RETAIN: property_retain = true; break; | |
9168 | ||
f614132b NP |
9169 | case RID_GETTER: |
9170 | case RID_SETTER: | |
f614132b NP |
9171 | if (c_parser_next_token_is_not (parser, CPP_EQ)) |
9172 | { | |
d853ee42 NP |
9173 | if (keyword == RID_GETTER) |
9174 | c_parser_error (parser, | |
9175 | "missing %<=%> (after %<getter%> attribute)"); | |
9176 | else | |
9177 | c_parser_error (parser, | |
9178 | "missing %<=%> (after %<setter%> attribute)"); | |
f614132b NP |
9179 | syntax_error = true; |
9180 | break; | |
9181 | } | |
9182 | c_parser_consume_token (parser); /* eat the = */ | |
9183 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9184 | { | |
9185 | c_parser_error (parser, "expected identifier"); | |
9186 | syntax_error = true; | |
9187 | break; | |
9188 | } | |
f614132b NP |
9189 | if (keyword == RID_SETTER) |
9190 | { | |
200290f2 NP |
9191 | if (property_setter_ident != NULL_TREE) |
9192 | c_parser_error (parser, "the %<setter%> attribute may only be specified once"); | |
9193 | else | |
9194 | property_setter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 9195 | c_parser_consume_token (parser); |
200290f2 NP |
9196 | if (c_parser_next_token_is_not (parser, CPP_COLON)) |
9197 | c_parser_error (parser, "setter name must terminate with %<:%>"); | |
9198 | else | |
9199 | c_parser_consume_token (parser); | |
f614132b | 9200 | } |
46a88c12 | 9201 | else |
f614132b | 9202 | { |
200290f2 NP |
9203 | if (property_getter_ident != NULL_TREE) |
9204 | c_parser_error (parser, "the %<getter%> attribute may only be specified once"); | |
9205 | else | |
9206 | property_getter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 9207 | c_parser_consume_token (parser); |
f614132b | 9208 | } |
200290f2 NP |
9209 | break; |
9210 | default: | |
9211 | c_parser_error (parser, "unknown property attribute"); | |
f614132b NP |
9212 | syntax_error = true; |
9213 | break; | |
9214 | } | |
9215 | ||
9216 | if (syntax_error) | |
668ea4b1 | 9217 | break; |
f614132b NP |
9218 | |
9219 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
668ea4b1 | 9220 | c_parser_consume_token (parser); |
f614132b | 9221 | else |
668ea4b1 IS |
9222 | break; |
9223 | } | |
f614132b NP |
9224 | parser->objc_property_attr_context = false; |
9225 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9226 | } | |
9227 | /* ... and the property declaration(s). */ | |
9228 | properties = c_parser_struct_declaration (parser); | |
668ea4b1 | 9229 | |
f614132b NP |
9230 | if (properties == error_mark_node) |
9231 | { | |
9232 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9233 | parser->error = false; | |
9234 | return; | |
9235 | } | |
668ea4b1 | 9236 | |
f614132b NP |
9237 | if (properties == NULL_TREE) |
9238 | c_parser_error (parser, "expected identifier"); | |
9239 | else | |
9240 | { | |
9241 | /* Comma-separated properties are chained together in | |
9242 | reverse order; add them one by one. */ | |
9243 | properties = nreverse (properties); | |
9244 | ||
9245 | for (; properties; properties = TREE_CHAIN (properties)) | |
200290f2 NP |
9246 | objc_add_property_declaration (loc, copy_node (properties), |
9247 | property_readonly, property_readwrite, | |
9248 | property_assign, property_retain, | |
9249 | property_copy, property_nonatomic, | |
46a88c12 | 9250 | property_getter_ident, property_setter_ident); |
f614132b | 9251 | } |
668ea4b1 IS |
9252 | |
9253 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
f614132b | 9254 | parser->error = false; |
668ea4b1 IS |
9255 | } |
9256 | ||
da57d1b9 NP |
9257 | /* Parse an Objective-C @synthesize declaration. The syntax is: |
9258 | ||
9259 | objc-synthesize-declaration: | |
9260 | @synthesize objc-synthesize-identifier-list ; | |
9261 | ||
9262 | objc-synthesize-identifier-list: | |
9263 | objc-synthesize-identifier | |
9264 | objc-synthesize-identifier-list, objc-synthesize-identifier | |
9265 | ||
9266 | objc-synthesize-identifier | |
9267 | identifier | |
9268 | identifier = identifier | |
9269 | ||
9270 | For example: | |
9271 | @synthesize MyProperty; | |
9272 | @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty; | |
9273 | ||
9274 | PS: This function is identical to cp_parser_objc_at_synthesize_declaration | |
9275 | for C++. Keep them in sync. | |
9276 | */ | |
9277 | static void | |
9278 | c_parser_objc_at_synthesize_declaration (c_parser *parser) | |
9279 | { | |
9280 | tree list = NULL_TREE; | |
9281 | location_t loc; | |
9282 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE)); | |
9283 | loc = c_parser_peek_token (parser)->location; | |
9284 | ||
9285 | c_parser_consume_token (parser); | |
9286 | while (true) | |
9287 | { | |
9288 | tree property, ivar; | |
9289 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9290 | { | |
9291 | c_parser_error (parser, "expected identifier"); | |
9292 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9293 | /* Once we find the semicolon, we can resume normal parsing. | |
9294 | We have to reset parser->error manually because | |
9295 | c_parser_skip_until_found() won't reset it for us if the | |
9296 | next token is precisely a semicolon. */ | |
9297 | parser->error = false; | |
9298 | return; | |
9299 | } | |
9300 | property = c_parser_peek_token (parser)->value; | |
9301 | c_parser_consume_token (parser); | |
9302 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
9303 | { | |
9304 | c_parser_consume_token (parser); | |
9305 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9306 | { | |
9307 | c_parser_error (parser, "expected identifier"); | |
9308 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9309 | parser->error = false; | |
9310 | return; | |
9311 | } | |
9312 | ivar = c_parser_peek_token (parser)->value; | |
9313 | c_parser_consume_token (parser); | |
9314 | } | |
9315 | else | |
9316 | ivar = NULL_TREE; | |
9317 | list = chainon (list, build_tree_list (ivar, property)); | |
9318 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9319 | c_parser_consume_token (parser); | |
9320 | else | |
9321 | break; | |
9322 | } | |
9323 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9324 | objc_add_synthesize_declaration (loc, list); | |
9325 | } | |
9326 | ||
9327 | /* Parse an Objective-C @dynamic declaration. The syntax is: | |
9328 | ||
9329 | objc-dynamic-declaration: | |
9330 | @dynamic identifier-list ; | |
9331 | ||
9332 | For example: | |
9333 | @dynamic MyProperty; | |
9334 | @dynamic MyProperty, AnotherProperty; | |
9335 | ||
9336 | PS: This function is identical to cp_parser_objc_at_dynamic_declaration | |
9337 | for C++. Keep them in sync. | |
9338 | */ | |
9339 | static void | |
9340 | c_parser_objc_at_dynamic_declaration (c_parser *parser) | |
9341 | { | |
9342 | tree list = NULL_TREE; | |
9343 | location_t loc; | |
9344 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC)); | |
9345 | loc = c_parser_peek_token (parser)->location; | |
9346 | ||
9347 | c_parser_consume_token (parser); | |
9348 | while (true) | |
9349 | { | |
9350 | tree property; | |
9351 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9352 | { | |
9353 | c_parser_error (parser, "expected identifier"); | |
9354 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9355 | parser->error = false; | |
9356 | return; | |
9357 | } | |
9358 | property = c_parser_peek_token (parser)->value; | |
9359 | list = chainon (list, build_tree_list (NULL_TREE, property)); | |
9360 | c_parser_consume_token (parser); | |
9361 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9362 | c_parser_consume_token (parser); | |
9363 | else | |
9364 | break; | |
9365 | } | |
9366 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9367 | objc_add_dynamic_declaration (loc, list); | |
9368 | } | |
9369 | ||
27bf414c | 9370 | \f |
953ff289 DN |
9371 | /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore |
9372 | should be considered, statements. ALLOW_STMT is true if we're within | |
9373 | the context of a function and such pragmas are to be allowed. Returns | |
9374 | true if we actually parsed such a pragma. */ | |
27bf414c | 9375 | |
bc4071dd | 9376 | static bool |
953ff289 | 9377 | c_parser_pragma (c_parser *parser, enum pragma_context context) |
bc4071dd RH |
9378 | { |
9379 | unsigned int id; | |
9380 | ||
9381 | id = c_parser_peek_token (parser)->pragma_kind; | |
9382 | gcc_assert (id != PRAGMA_NONE); | |
9383 | ||
9384 | switch (id) | |
9385 | { | |
953ff289 DN |
9386 | case PRAGMA_OMP_BARRIER: |
9387 | if (context != pragma_compound) | |
9388 | { | |
9389 | if (context == pragma_stmt) | |
9390 | c_parser_error (parser, "%<#pragma omp barrier%> may only be " | |
9391 | "used in compound statements"); | |
9392 | goto bad_stmt; | |
9393 | } | |
9394 | c_parser_omp_barrier (parser); | |
9395 | return false; | |
9396 | ||
9397 | case PRAGMA_OMP_FLUSH: | |
9398 | if (context != pragma_compound) | |
9399 | { | |
9400 | if (context == pragma_stmt) | |
9401 | c_parser_error (parser, "%<#pragma omp flush%> may only be " | |
9402 | "used in compound statements"); | |
9403 | goto bad_stmt; | |
9404 | } | |
9405 | c_parser_omp_flush (parser); | |
9406 | return false; | |
9407 | ||
a68ab351 JJ |
9408 | case PRAGMA_OMP_TASKWAIT: |
9409 | if (context != pragma_compound) | |
9410 | { | |
9411 | if (context == pragma_stmt) | |
9412 | c_parser_error (parser, "%<#pragma omp taskwait%> may only be " | |
9413 | "used in compound statements"); | |
9414 | goto bad_stmt; | |
9415 | } | |
9416 | c_parser_omp_taskwait (parser); | |
9417 | return false; | |
9418 | ||
20906c66 JJ |
9419 | case PRAGMA_OMP_TASKYIELD: |
9420 | if (context != pragma_compound) | |
9421 | { | |
9422 | if (context == pragma_stmt) | |
9423 | c_parser_error (parser, "%<#pragma omp taskyield%> may only be " | |
9424 | "used in compound statements"); | |
9425 | goto bad_stmt; | |
9426 | } | |
9427 | c_parser_omp_taskyield (parser); | |
9428 | return false; | |
9429 | ||
acf0174b JJ |
9430 | case PRAGMA_OMP_CANCEL: |
9431 | if (context != pragma_compound) | |
9432 | { | |
9433 | if (context == pragma_stmt) | |
9434 | c_parser_error (parser, "%<#pragma omp cancel%> may only be " | |
9435 | "used in compound statements"); | |
9436 | goto bad_stmt; | |
9437 | } | |
9438 | c_parser_omp_cancel (parser); | |
9439 | return false; | |
9440 | ||
9441 | case PRAGMA_OMP_CANCELLATION_POINT: | |
9442 | if (context != pragma_compound) | |
9443 | { | |
9444 | if (context == pragma_stmt) | |
9445 | c_parser_error (parser, "%<#pragma omp cancellation point%> may " | |
9446 | "only be used in compound statements"); | |
9447 | goto bad_stmt; | |
9448 | } | |
9449 | c_parser_omp_cancellation_point (parser); | |
9450 | return false; | |
9451 | ||
953ff289 DN |
9452 | case PRAGMA_OMP_THREADPRIVATE: |
9453 | c_parser_omp_threadprivate (parser); | |
9454 | return false; | |
9455 | ||
acf0174b JJ |
9456 | case PRAGMA_OMP_TARGET: |
9457 | return c_parser_omp_target (parser, context); | |
9458 | ||
9459 | case PRAGMA_OMP_END_DECLARE_TARGET: | |
9460 | c_parser_omp_end_declare_target (parser); | |
9461 | return false; | |
9462 | ||
953ff289 | 9463 | case PRAGMA_OMP_SECTION: |
3ba09659 AH |
9464 | error_at (c_parser_peek_token (parser)->location, |
9465 | "%<#pragma omp section%> may only be used in " | |
9466 | "%<#pragma omp sections%> construct"); | |
953ff289 DN |
9467 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); |
9468 | return false; | |
9469 | ||
acf0174b JJ |
9470 | case PRAGMA_OMP_DECLARE_REDUCTION: |
9471 | c_parser_omp_declare (parser, context); | |
9472 | return false; | |
8170608b TB |
9473 | case PRAGMA_IVDEP: |
9474 | c_parser_consume_pragma (parser); | |
9475 | c_parser_skip_to_pragma_eol (parser); | |
d4af74d4 TB |
9476 | if (!c_parser_next_token_is_keyword (parser, RID_FOR) |
9477 | && !c_parser_next_token_is_keyword (parser, RID_WHILE) | |
9478 | && !c_parser_next_token_is_keyword (parser, RID_DO)) | |
8170608b | 9479 | { |
d4af74d4 | 9480 | c_parser_error (parser, "for, while or do statement expected"); |
8170608b TB |
9481 | return false; |
9482 | } | |
d4af74d4 TB |
9483 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) |
9484 | c_parser_for_statement (parser, true); | |
9485 | else if (c_parser_next_token_is_keyword (parser, RID_WHILE)) | |
9486 | c_parser_while_statement (parser, true); | |
9487 | else | |
9488 | c_parser_do_statement (parser, true); | |
8170608b | 9489 | return false; |
acf0174b | 9490 | |
bc4071dd RH |
9491 | case PRAGMA_GCC_PCH_PREPROCESS: |
9492 | c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first"); | |
9493 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9494 | return false; | |
9495 | ||
c02065fc AH |
9496 | case PRAGMA_CILK_SIMD: |
9497 | if (!c_parser_cilk_verify_simd (parser, context)) | |
9498 | return false; | |
9499 | c_parser_consume_pragma (parser); | |
9500 | c_parser_cilk_simd (parser); | |
9501 | return false; | |
9502 | ||
bc4071dd | 9503 | default: |
953ff289 DN |
9504 | if (id < PRAGMA_FIRST_EXTERNAL) |
9505 | { | |
acf0174b | 9506 | if (context != pragma_stmt && context != pragma_compound) |
953ff289 DN |
9507 | { |
9508 | bad_stmt: | |
9509 | c_parser_error (parser, "expected declaration specifiers"); | |
9510 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9511 | return false; | |
9512 | } | |
9513 | c_parser_omp_construct (parser); | |
9514 | return true; | |
9515 | } | |
bc4071dd RH |
9516 | break; |
9517 | } | |
9518 | ||
9519 | c_parser_consume_pragma (parser); | |
9520 | c_invoke_pragma_handler (id); | |
27bf414c | 9521 | |
b8698a0f | 9522 | /* Skip to EOL, but suppress any error message. Those will have been |
bc4071dd RH |
9523 | generated by the handler routine through calling error, as opposed |
9524 | to calling c_parser_error. */ | |
9525 | parser->error = true; | |
9526 | c_parser_skip_to_pragma_eol (parser); | |
9527 | ||
9528 | return false; | |
9529 | } | |
9530 | ||
9531 | /* The interface the pragma parsers have to the lexer. */ | |
9532 | ||
9533 | enum cpp_ttype | |
9534 | pragma_lex (tree *value) | |
9535 | { | |
9536 | c_token *tok = c_parser_peek_token (the_parser); | |
9537 | enum cpp_ttype ret = tok->type; | |
9538 | ||
9539 | *value = tok->value; | |
9540 | if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF) | |
9541 | ret = CPP_EOF; | |
9542 | else | |
9543 | { | |
9544 | if (ret == CPP_KEYWORD) | |
9545 | ret = CPP_NAME; | |
9546 | c_parser_consume_token (the_parser); | |
9547 | } | |
9548 | ||
9549 | return ret; | |
9550 | } | |
9551 | ||
9552 | static void | |
9553 | c_parser_pragma_pch_preprocess (c_parser *parser) | |
9554 | { | |
9555 | tree name = NULL; | |
9556 | ||
9557 | c_parser_consume_pragma (parser); | |
9558 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
9559 | { | |
9560 | name = c_parser_peek_token (parser)->value; | |
9561 | c_parser_consume_token (parser); | |
9562 | } | |
9563 | else | |
9564 | c_parser_error (parser, "expected string literal"); | |
9565 | c_parser_skip_to_pragma_eol (parser); | |
9566 | ||
9567 | if (name) | |
9568 | c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name)); | |
9569 | } | |
953ff289 | 9570 | \f |
acf0174b | 9571 | /* OpenMP 2.5 / 3.0 / 3.1 / 4.0 parsing routines. */ |
953ff289 DN |
9572 | |
9573 | /* Returns name of the next clause. | |
9574 | If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and | |
9575 | the token is not consumed. Otherwise appropriate pragma_omp_clause is | |
9576 | returned and the token is consumed. */ | |
9577 | ||
9578 | static pragma_omp_clause | |
9579 | c_parser_omp_clause_name (c_parser *parser) | |
9580 | { | |
9581 | pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE; | |
9582 | ||
9583 | if (c_parser_next_token_is_keyword (parser, RID_IF)) | |
9584 | result = PRAGMA_OMP_CLAUSE_IF; | |
9585 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
9586 | result = PRAGMA_OMP_CLAUSE_DEFAULT; | |
acf0174b JJ |
9587 | else if (c_parser_next_token_is_keyword (parser, RID_FOR)) |
9588 | result = PRAGMA_OMP_CLAUSE_FOR; | |
953ff289 DN |
9589 | else if (c_parser_next_token_is (parser, CPP_NAME)) |
9590 | { | |
9591 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9592 | ||
9593 | switch (p[0]) | |
9594 | { | |
acf0174b JJ |
9595 | case 'a': |
9596 | if (!strcmp ("aligned", p)) | |
9597 | result = PRAGMA_OMP_CLAUSE_ALIGNED; | |
9598 | break; | |
953ff289 | 9599 | case 'c': |
a68ab351 JJ |
9600 | if (!strcmp ("collapse", p)) |
9601 | result = PRAGMA_OMP_CLAUSE_COLLAPSE; | |
9602 | else if (!strcmp ("copyin", p)) | |
953ff289 DN |
9603 | result = PRAGMA_OMP_CLAUSE_COPYIN; |
9604 | else if (!strcmp ("copyprivate", p)) | |
9605 | result = PRAGMA_OMP_CLAUSE_COPYPRIVATE; | |
9606 | break; | |
acf0174b JJ |
9607 | case 'd': |
9608 | if (!strcmp ("depend", p)) | |
9609 | result = PRAGMA_OMP_CLAUSE_DEPEND; | |
9610 | else if (!strcmp ("device", p)) | |
9611 | result = PRAGMA_OMP_CLAUSE_DEVICE; | |
9612 | else if (!strcmp ("dist_schedule", p)) | |
9613 | result = PRAGMA_OMP_CLAUSE_DIST_SCHEDULE; | |
9614 | break; | |
953ff289 | 9615 | case 'f': |
20906c66 JJ |
9616 | if (!strcmp ("final", p)) |
9617 | result = PRAGMA_OMP_CLAUSE_FINAL; | |
9618 | else if (!strcmp ("firstprivate", p)) | |
953ff289 | 9619 | result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE; |
acf0174b JJ |
9620 | else if (!strcmp ("from", p)) |
9621 | result = PRAGMA_OMP_CLAUSE_FROM; | |
9622 | break; | |
9623 | case 'i': | |
9624 | if (!strcmp ("inbranch", p)) | |
9625 | result = PRAGMA_OMP_CLAUSE_INBRANCH; | |
953ff289 DN |
9626 | break; |
9627 | case 'l': | |
9628 | if (!strcmp ("lastprivate", p)) | |
9629 | result = PRAGMA_OMP_CLAUSE_LASTPRIVATE; | |
acf0174b JJ |
9630 | else if (!strcmp ("linear", p)) |
9631 | result = PRAGMA_OMP_CLAUSE_LINEAR; | |
953ff289 | 9632 | break; |
20906c66 | 9633 | case 'm': |
acf0174b JJ |
9634 | if (!strcmp ("map", p)) |
9635 | result = PRAGMA_OMP_CLAUSE_MAP; | |
9636 | else if (!strcmp ("mergeable", p)) | |
20906c66 | 9637 | result = PRAGMA_OMP_CLAUSE_MERGEABLE; |
b72271b9 | 9638 | else if (flag_cilkplus && !strcmp ("mask", p)) |
41958c28 | 9639 | result = PRAGMA_CILK_CLAUSE_MASK; |
20906c66 | 9640 | break; |
953ff289 | 9641 | case 'n': |
acf0174b JJ |
9642 | if (!strcmp ("notinbranch", p)) |
9643 | result = PRAGMA_OMP_CLAUSE_NOTINBRANCH; | |
9644 | else if (!strcmp ("nowait", p)) | |
953ff289 | 9645 | result = PRAGMA_OMP_CLAUSE_NOWAIT; |
acf0174b JJ |
9646 | else if (!strcmp ("num_teams", p)) |
9647 | result = PRAGMA_OMP_CLAUSE_NUM_TEAMS; | |
953ff289 DN |
9648 | else if (!strcmp ("num_threads", p)) |
9649 | result = PRAGMA_OMP_CLAUSE_NUM_THREADS; | |
b72271b9 | 9650 | else if (flag_cilkplus && !strcmp ("nomask", p)) |
41958c28 | 9651 | result = PRAGMA_CILK_CLAUSE_NOMASK; |
953ff289 DN |
9652 | break; |
9653 | case 'o': | |
9654 | if (!strcmp ("ordered", p)) | |
9655 | result = PRAGMA_OMP_CLAUSE_ORDERED; | |
9656 | break; | |
9657 | case 'p': | |
acf0174b JJ |
9658 | if (!strcmp ("parallel", p)) |
9659 | result = PRAGMA_OMP_CLAUSE_PARALLEL; | |
9660 | else if (!strcmp ("private", p)) | |
953ff289 | 9661 | result = PRAGMA_OMP_CLAUSE_PRIVATE; |
acf0174b JJ |
9662 | else if (!strcmp ("proc_bind", p)) |
9663 | result = PRAGMA_OMP_CLAUSE_PROC_BIND; | |
953ff289 DN |
9664 | break; |
9665 | case 'r': | |
9666 | if (!strcmp ("reduction", p)) | |
9667 | result = PRAGMA_OMP_CLAUSE_REDUCTION; | |
9668 | break; | |
9669 | case 's': | |
acf0174b JJ |
9670 | if (!strcmp ("safelen", p)) |
9671 | result = PRAGMA_OMP_CLAUSE_SAFELEN; | |
9672 | else if (!strcmp ("schedule", p)) | |
953ff289 | 9673 | result = PRAGMA_OMP_CLAUSE_SCHEDULE; |
acf0174b JJ |
9674 | else if (!strcmp ("sections", p)) |
9675 | result = PRAGMA_OMP_CLAUSE_SECTIONS; | |
953ff289 DN |
9676 | else if (!strcmp ("shared", p)) |
9677 | result = PRAGMA_OMP_CLAUSE_SHARED; | |
acf0174b JJ |
9678 | else if (!strcmp ("simdlen", p)) |
9679 | result = PRAGMA_OMP_CLAUSE_SIMDLEN; | |
9680 | break; | |
9681 | case 't': | |
9682 | if (!strcmp ("taskgroup", p)) | |
9683 | result = PRAGMA_OMP_CLAUSE_TASKGROUP; | |
9684 | else if (!strcmp ("thread_limit", p)) | |
9685 | result = PRAGMA_OMP_CLAUSE_THREAD_LIMIT; | |
9686 | else if (!strcmp ("to", p)) | |
9687 | result = PRAGMA_OMP_CLAUSE_TO; | |
953ff289 | 9688 | break; |
a68ab351 | 9689 | case 'u': |
acf0174b JJ |
9690 | if (!strcmp ("uniform", p)) |
9691 | result = PRAGMA_OMP_CLAUSE_UNIFORM; | |
9692 | else if (!strcmp ("untied", p)) | |
a68ab351 JJ |
9693 | result = PRAGMA_OMP_CLAUSE_UNTIED; |
9694 | break; | |
41958c28 | 9695 | case 'v': |
b72271b9 | 9696 | if (flag_cilkplus && !strcmp ("vectorlength", p)) |
41958c28 BI |
9697 | result = PRAGMA_CILK_CLAUSE_VECTORLENGTH; |
9698 | break; | |
953ff289 DN |
9699 | } |
9700 | } | |
9701 | ||
9702 | if (result != PRAGMA_OMP_CLAUSE_NONE) | |
9703 | c_parser_consume_token (parser); | |
9704 | ||
9705 | return result; | |
9706 | } | |
9707 | ||
9708 | /* Validate that a clause of the given type does not already exist. */ | |
9709 | ||
9710 | static void | |
d75d71e0 ILT |
9711 | check_no_duplicate_clause (tree clauses, enum omp_clause_code code, |
9712 | const char *name) | |
953ff289 DN |
9713 | { |
9714 | tree c; | |
9715 | ||
9716 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
aaf46ef9 | 9717 | if (OMP_CLAUSE_CODE (c) == code) |
953ff289 | 9718 | { |
c2255bc4 AH |
9719 | location_t loc = OMP_CLAUSE_LOCATION (c); |
9720 | error_at (loc, "too many %qs clauses", name); | |
953ff289 DN |
9721 | break; |
9722 | } | |
9723 | } | |
9724 | ||
9725 | /* OpenMP 2.5: | |
9726 | variable-list: | |
9727 | identifier | |
9728 | variable-list , identifier | |
9729 | ||
c2255bc4 AH |
9730 | If KIND is nonzero, create the appropriate node and install the |
9731 | decl in OMP_CLAUSE_DECL and add the node to the head of the list. | |
9732 | If KIND is nonzero, CLAUSE_LOC is the location of the clause. | |
953ff289 DN |
9733 | |
9734 | If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE; | |
9735 | return the list created. */ | |
9736 | ||
9737 | static tree | |
c2255bc4 AH |
9738 | c_parser_omp_variable_list (c_parser *parser, |
9739 | location_t clause_loc, | |
acf0174b | 9740 | enum omp_clause_code kind, tree list) |
953ff289 DN |
9741 | { |
9742 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
9743 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
9744 | c_parser_error (parser, "expected identifier"); | |
9745 | ||
9746 | while (c_parser_next_token_is (parser, CPP_NAME) | |
9747 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
9748 | { | |
9749 | tree t = lookup_name (c_parser_peek_token (parser)->value); | |
9750 | ||
9751 | if (t == NULL_TREE) | |
acf0174b JJ |
9752 | { |
9753 | undeclared_variable (c_parser_peek_token (parser)->location, | |
9754 | c_parser_peek_token (parser)->value); | |
9755 | t = error_mark_node; | |
9756 | } | |
9757 | ||
9758 | c_parser_consume_token (parser); | |
9759 | ||
9760 | if (t == error_mark_node) | |
953ff289 DN |
9761 | ; |
9762 | else if (kind != 0) | |
9763 | { | |
acf0174b JJ |
9764 | switch (kind) |
9765 | { | |
9766 | case OMP_CLAUSE_MAP: | |
9767 | case OMP_CLAUSE_FROM: | |
9768 | case OMP_CLAUSE_TO: | |
9769 | case OMP_CLAUSE_DEPEND: | |
9770 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
9771 | { | |
9772 | tree low_bound = NULL_TREE, length = NULL_TREE; | |
9773 | ||
9774 | c_parser_consume_token (parser); | |
9775 | if (!c_parser_next_token_is (parser, CPP_COLON)) | |
9776 | low_bound = c_parser_expression (parser).value; | |
9777 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
9778 | length = integer_one_node; | |
9779 | else | |
9780 | { | |
9781 | /* Look for `:'. */ | |
9782 | if (!c_parser_require (parser, CPP_COLON, | |
9783 | "expected %<:%>")) | |
9784 | { | |
9785 | t = error_mark_node; | |
9786 | break; | |
9787 | } | |
9788 | if (!c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
9789 | length = c_parser_expression (parser).value; | |
9790 | } | |
9791 | /* Look for the closing `]'. */ | |
9792 | if (!c_parser_require (parser, CPP_CLOSE_SQUARE, | |
9793 | "expected %<]%>")) | |
9794 | { | |
9795 | t = error_mark_node; | |
9796 | break; | |
9797 | } | |
9798 | t = tree_cons (low_bound, length, t); | |
9799 | } | |
9800 | break; | |
9801 | default: | |
9802 | break; | |
9803 | } | |
9804 | ||
9805 | if (t != error_mark_node) | |
9806 | { | |
9807 | tree u = build_omp_clause (clause_loc, kind); | |
9808 | OMP_CLAUSE_DECL (u) = t; | |
9809 | OMP_CLAUSE_CHAIN (u) = list; | |
9810 | list = u; | |
9811 | } | |
953ff289 DN |
9812 | } |
9813 | else | |
9814 | list = tree_cons (t, NULL_TREE, list); | |
9815 | ||
953ff289 DN |
9816 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) |
9817 | break; | |
9818 | ||
9819 | c_parser_consume_token (parser); | |
9820 | } | |
9821 | ||
9822 | return list; | |
9823 | } | |
9824 | ||
9825 | /* Similarly, but expect leading and trailing parenthesis. This is a very | |
9826 | common case for omp clauses. */ | |
9827 | ||
9828 | static tree | |
d75d71e0 ILT |
9829 | c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind, |
9830 | tree list) | |
953ff289 | 9831 | { |
c2255bc4 AH |
9832 | /* The clauses location. */ |
9833 | location_t loc = c_parser_peek_token (parser)->location; | |
9834 | ||
953ff289 DN |
9835 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9836 | { | |
c2255bc4 | 9837 | list = c_parser_omp_variable_list (parser, loc, kind, list); |
953ff289 DN |
9838 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
9839 | } | |
9840 | return list; | |
9841 | } | |
9842 | ||
a68ab351 JJ |
9843 | /* OpenMP 3.0: |
9844 | collapse ( constant-expression ) */ | |
9845 | ||
9846 | static tree | |
9847 | c_parser_omp_clause_collapse (c_parser *parser, tree list) | |
9848 | { | |
9849 | tree c, num = error_mark_node; | |
9850 | HOST_WIDE_INT n; | |
9851 | location_t loc; | |
9852 | ||
9853 | check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse"); | |
9854 | ||
9855 | loc = c_parser_peek_token (parser)->location; | |
9856 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
9857 | { | |
9858 | num = c_parser_expr_no_commas (parser, NULL).value; | |
9859 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9860 | } | |
9861 | if (num == error_mark_node) | |
9862 | return list; | |
acf0174b JJ |
9863 | mark_exp_read (num); |
9864 | num = c_fully_fold (num, false, NULL); | |
a68ab351 | 9865 | if (!INTEGRAL_TYPE_P (TREE_TYPE (num)) |
9541ffee | 9866 | || !tree_fits_shwi_p (num) |
9439e9a1 | 9867 | || (n = tree_to_shwi (num)) <= 0 |
a68ab351 JJ |
9868 | || (int) n != n) |
9869 | { | |
3ba09659 AH |
9870 | error_at (loc, |
9871 | "collapse argument needs positive constant integer expression"); | |
a68ab351 JJ |
9872 | return list; |
9873 | } | |
c2255bc4 | 9874 | c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE); |
a68ab351 JJ |
9875 | OMP_CLAUSE_COLLAPSE_EXPR (c) = num; |
9876 | OMP_CLAUSE_CHAIN (c) = list; | |
9877 | return c; | |
9878 | } | |
9879 | ||
953ff289 DN |
9880 | /* OpenMP 2.5: |
9881 | copyin ( variable-list ) */ | |
9882 | ||
9883 | static tree | |
9884 | c_parser_omp_clause_copyin (c_parser *parser, tree list) | |
9885 | { | |
9886 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list); | |
9887 | } | |
9888 | ||
9889 | /* OpenMP 2.5: | |
9890 | copyprivate ( variable-list ) */ | |
9891 | ||
9892 | static tree | |
9893 | c_parser_omp_clause_copyprivate (c_parser *parser, tree list) | |
9894 | { | |
9895 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list); | |
9896 | } | |
9897 | ||
9898 | /* OpenMP 2.5: | |
9899 | default ( shared | none ) */ | |
9900 | ||
9901 | static tree | |
9902 | c_parser_omp_clause_default (c_parser *parser, tree list) | |
9903 | { | |
9904 | enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
c2255bc4 | 9905 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9906 | tree c; |
9907 | ||
9908 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
9909 | return list; | |
9910 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
9911 | { | |
9912 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9913 | ||
9914 | switch (p[0]) | |
9915 | { | |
9916 | case 'n': | |
9917 | if (strcmp ("none", p) != 0) | |
9918 | goto invalid_kind; | |
9919 | kind = OMP_CLAUSE_DEFAULT_NONE; | |
9920 | break; | |
9921 | ||
9922 | case 's': | |
9923 | if (strcmp ("shared", p) != 0) | |
9924 | goto invalid_kind; | |
9925 | kind = OMP_CLAUSE_DEFAULT_SHARED; | |
9926 | break; | |
9927 | ||
9928 | default: | |
9929 | goto invalid_kind; | |
9930 | } | |
9931 | ||
9932 | c_parser_consume_token (parser); | |
9933 | } | |
9934 | else | |
9935 | { | |
9936 | invalid_kind: | |
9937 | c_parser_error (parser, "expected %<none%> or %<shared%>"); | |
9938 | } | |
9939 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9940 | ||
9941 | if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
9942 | return list; | |
9943 | ||
9944 | check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default"); | |
c2255bc4 | 9945 | c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT); |
953ff289 DN |
9946 | OMP_CLAUSE_CHAIN (c) = list; |
9947 | OMP_CLAUSE_DEFAULT_KIND (c) = kind; | |
9948 | ||
9949 | return c; | |
9950 | } | |
9951 | ||
9952 | /* OpenMP 2.5: | |
9953 | firstprivate ( variable-list ) */ | |
9954 | ||
9955 | static tree | |
9956 | c_parser_omp_clause_firstprivate (c_parser *parser, tree list) | |
9957 | { | |
9958 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list); | |
9959 | } | |
9960 | ||
20906c66 JJ |
9961 | /* OpenMP 3.1: |
9962 | final ( expression ) */ | |
9963 | ||
9964 | static tree | |
9965 | c_parser_omp_clause_final (c_parser *parser, tree list) | |
9966 | { | |
9967 | location_t loc = c_parser_peek_token (parser)->location; | |
9968 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
9969 | { | |
9970 | tree t = c_parser_paren_condition (parser); | |
9971 | tree c; | |
9972 | ||
9973 | check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final"); | |
9974 | ||
9975 | c = build_omp_clause (loc, OMP_CLAUSE_FINAL); | |
9976 | OMP_CLAUSE_FINAL_EXPR (c) = t; | |
9977 | OMP_CLAUSE_CHAIN (c) = list; | |
9978 | list = c; | |
9979 | } | |
9980 | else | |
9981 | c_parser_error (parser, "expected %<(%>"); | |
9982 | ||
9983 | return list; | |
9984 | } | |
9985 | ||
953ff289 DN |
9986 | /* OpenMP 2.5: |
9987 | if ( expression ) */ | |
9988 | ||
9989 | static tree | |
9990 | c_parser_omp_clause_if (c_parser *parser, tree list) | |
9991 | { | |
c2255bc4 | 9992 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
9993 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
9994 | { | |
9995 | tree t = c_parser_paren_condition (parser); | |
9996 | tree c; | |
9997 | ||
9998 | check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if"); | |
9999 | ||
c2255bc4 | 10000 | c = build_omp_clause (loc, OMP_CLAUSE_IF); |
953ff289 DN |
10001 | OMP_CLAUSE_IF_EXPR (c) = t; |
10002 | OMP_CLAUSE_CHAIN (c) = list; | |
10003 | list = c; | |
10004 | } | |
10005 | else | |
10006 | c_parser_error (parser, "expected %<(%>"); | |
10007 | ||
10008 | return list; | |
10009 | } | |
10010 | ||
10011 | /* OpenMP 2.5: | |
10012 | lastprivate ( variable-list ) */ | |
10013 | ||
10014 | static tree | |
10015 | c_parser_omp_clause_lastprivate (c_parser *parser, tree list) | |
10016 | { | |
10017 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list); | |
10018 | } | |
10019 | ||
20906c66 JJ |
10020 | /* OpenMP 3.1: |
10021 | mergeable */ | |
10022 | ||
10023 | static tree | |
10024 | c_parser_omp_clause_mergeable (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10025 | { | |
10026 | tree c; | |
10027 | ||
10028 | /* FIXME: Should we allow duplicates? */ | |
10029 | check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable"); | |
10030 | ||
10031 | c = build_omp_clause (c_parser_peek_token (parser)->location, | |
10032 | OMP_CLAUSE_MERGEABLE); | |
10033 | OMP_CLAUSE_CHAIN (c) = list; | |
10034 | ||
10035 | return c; | |
10036 | } | |
10037 | ||
953ff289 DN |
10038 | /* OpenMP 2.5: |
10039 | nowait */ | |
10040 | ||
10041 | static tree | |
10042 | c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10043 | { | |
10044 | tree c; | |
c2255bc4 | 10045 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10046 | |
10047 | check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait"); | |
10048 | ||
c2255bc4 | 10049 | c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT); |
953ff289 DN |
10050 | OMP_CLAUSE_CHAIN (c) = list; |
10051 | return c; | |
10052 | } | |
10053 | ||
10054 | /* OpenMP 2.5: | |
10055 | num_threads ( expression ) */ | |
10056 | ||
10057 | static tree | |
10058 | c_parser_omp_clause_num_threads (c_parser *parser, tree list) | |
10059 | { | |
c2255bc4 | 10060 | location_t num_threads_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10061 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10062 | { | |
c7412148 | 10063 | location_t expr_loc = c_parser_peek_token (parser)->location; |
953ff289 | 10064 | tree c, t = c_parser_expression (parser).value; |
7d1362bc | 10065 | mark_exp_read (t); |
928c19bb | 10066 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
10067 | |
10068 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10069 | ||
10070 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
10071 | { | |
10072 | c_parser_error (parser, "expected integer expression"); | |
10073 | return list; | |
10074 | } | |
10075 | ||
10076 | /* Attempt to statically determine when the number isn't positive. */ | |
db3927fb | 10077 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, |
953ff289 | 10078 | build_int_cst (TREE_TYPE (t), 0)); |
c2255bc4 AH |
10079 | if (CAN_HAVE_LOCATION_P (c)) |
10080 | SET_EXPR_LOCATION (c, expr_loc); | |
953ff289 DN |
10081 | if (c == boolean_true_node) |
10082 | { | |
3ba09659 AH |
10083 | warning_at (expr_loc, 0, |
10084 | "%<num_threads%> value must be positive"); | |
953ff289 DN |
10085 | t = integer_one_node; |
10086 | } | |
10087 | ||
10088 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads"); | |
10089 | ||
c2255bc4 | 10090 | c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS); |
953ff289 DN |
10091 | OMP_CLAUSE_NUM_THREADS_EXPR (c) = t; |
10092 | OMP_CLAUSE_CHAIN (c) = list; | |
10093 | list = c; | |
10094 | } | |
10095 | ||
10096 | return list; | |
10097 | } | |
10098 | ||
10099 | /* OpenMP 2.5: | |
10100 | ordered */ | |
10101 | ||
10102 | static tree | |
c2255bc4 | 10103 | c_parser_omp_clause_ordered (c_parser *parser, tree list) |
953ff289 DN |
10104 | { |
10105 | tree c; | |
10106 | ||
10107 | check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered"); | |
10108 | ||
c2255bc4 AH |
10109 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
10110 | OMP_CLAUSE_ORDERED); | |
953ff289 | 10111 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 10112 | |
953ff289 DN |
10113 | return c; |
10114 | } | |
10115 | ||
10116 | /* OpenMP 2.5: | |
10117 | private ( variable-list ) */ | |
10118 | ||
10119 | static tree | |
10120 | c_parser_omp_clause_private (c_parser *parser, tree list) | |
10121 | { | |
10122 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list); | |
10123 | } | |
10124 | ||
10125 | /* OpenMP 2.5: | |
10126 | reduction ( reduction-operator : variable-list ) | |
10127 | ||
10128 | reduction-operator: | |
20906c66 | 10129 | One of: + * - & ^ | && || |
acf0174b | 10130 | |
20906c66 JJ |
10131 | OpenMP 3.1: |
10132 | ||
10133 | reduction-operator: | |
acf0174b JJ |
10134 | One of: + * - & ^ | && || max min |
10135 | ||
10136 | OpenMP 4.0: | |
10137 | ||
10138 | reduction-operator: | |
10139 | One of: + * - & ^ | && || | |
10140 | identifier */ | |
953ff289 DN |
10141 | |
10142 | static tree | |
10143 | c_parser_omp_clause_reduction (c_parser *parser, tree list) | |
10144 | { | |
c2255bc4 | 10145 | location_t clause_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10146 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10147 | { | |
acf0174b JJ |
10148 | enum tree_code code = ERROR_MARK; |
10149 | tree reduc_id = NULL_TREE; | |
953ff289 DN |
10150 | |
10151 | switch (c_parser_peek_token (parser)->type) | |
10152 | { | |
10153 | case CPP_PLUS: | |
10154 | code = PLUS_EXPR; | |
10155 | break; | |
10156 | case CPP_MULT: | |
10157 | code = MULT_EXPR; | |
10158 | break; | |
10159 | case CPP_MINUS: | |
10160 | code = MINUS_EXPR; | |
10161 | break; | |
10162 | case CPP_AND: | |
10163 | code = BIT_AND_EXPR; | |
10164 | break; | |
10165 | case CPP_XOR: | |
10166 | code = BIT_XOR_EXPR; | |
10167 | break; | |
10168 | case CPP_OR: | |
10169 | code = BIT_IOR_EXPR; | |
10170 | break; | |
10171 | case CPP_AND_AND: | |
10172 | code = TRUTH_ANDIF_EXPR; | |
10173 | break; | |
10174 | case CPP_OR_OR: | |
10175 | code = TRUTH_ORIF_EXPR; | |
10176 | break; | |
20906c66 JJ |
10177 | case CPP_NAME: |
10178 | { | |
10179 | const char *p | |
10180 | = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10181 | if (strcmp (p, "min") == 0) | |
10182 | { | |
10183 | code = MIN_EXPR; | |
10184 | break; | |
10185 | } | |
10186 | if (strcmp (p, "max") == 0) | |
10187 | { | |
10188 | code = MAX_EXPR; | |
10189 | break; | |
10190 | } | |
acf0174b JJ |
10191 | reduc_id = c_parser_peek_token (parser)->value; |
10192 | break; | |
20906c66 | 10193 | } |
953ff289 DN |
10194 | default: |
10195 | c_parser_error (parser, | |
10196 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
20906c66 | 10197 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>"); |
953ff289 DN |
10198 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); |
10199 | return list; | |
10200 | } | |
10201 | c_parser_consume_token (parser); | |
acf0174b | 10202 | reduc_id = c_omp_reduction_id (code, reduc_id); |
953ff289 DN |
10203 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
10204 | { | |
10205 | tree nl, c; | |
10206 | ||
c2255bc4 AH |
10207 | nl = c_parser_omp_variable_list (parser, clause_loc, |
10208 | OMP_CLAUSE_REDUCTION, list); | |
953ff289 | 10209 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
acf0174b JJ |
10210 | { |
10211 | tree type = TREE_TYPE (OMP_CLAUSE_DECL (c)); | |
10212 | OMP_CLAUSE_REDUCTION_CODE (c) = code; | |
10213 | if (code == ERROR_MARK | |
10214 | || !(INTEGRAL_TYPE_P (type) | |
10215 | || TREE_CODE (type) == REAL_TYPE | |
10216 | || TREE_CODE (type) == COMPLEX_TYPE)) | |
10217 | OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) | |
10218 | = c_omp_reduction_lookup (reduc_id, | |
10219 | TYPE_MAIN_VARIANT (type)); | |
10220 | } | |
953ff289 DN |
10221 | |
10222 | list = nl; | |
10223 | } | |
10224 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10225 | } | |
10226 | return list; | |
10227 | } | |
10228 | ||
10229 | /* OpenMP 2.5: | |
10230 | schedule ( schedule-kind ) | |
10231 | schedule ( schedule-kind , expression ) | |
10232 | ||
10233 | schedule-kind: | |
a68ab351 | 10234 | static | dynamic | guided | runtime | auto |
953ff289 DN |
10235 | */ |
10236 | ||
10237 | static tree | |
10238 | c_parser_omp_clause_schedule (c_parser *parser, tree list) | |
10239 | { | |
10240 | tree c, t; | |
c2255bc4 | 10241 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10242 | |
10243 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10244 | return list; | |
10245 | ||
c2255bc4 | 10246 | c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE); |
953ff289 DN |
10247 | |
10248 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
10249 | { | |
10250 | tree kind = c_parser_peek_token (parser)->value; | |
10251 | const char *p = IDENTIFIER_POINTER (kind); | |
10252 | ||
10253 | switch (p[0]) | |
10254 | { | |
10255 | case 'd': | |
10256 | if (strcmp ("dynamic", p) != 0) | |
10257 | goto invalid_kind; | |
10258 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC; | |
10259 | break; | |
10260 | ||
10261 | case 'g': | |
10262 | if (strcmp ("guided", p) != 0) | |
10263 | goto invalid_kind; | |
10264 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED; | |
10265 | break; | |
10266 | ||
10267 | case 'r': | |
10268 | if (strcmp ("runtime", p) != 0) | |
10269 | goto invalid_kind; | |
10270 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME; | |
10271 | break; | |
10272 | ||
10273 | default: | |
10274 | goto invalid_kind; | |
10275 | } | |
10276 | } | |
10277 | else if (c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
10278 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC; | |
a68ab351 JJ |
10279 | else if (c_parser_next_token_is_keyword (parser, RID_AUTO)) |
10280 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO; | |
953ff289 DN |
10281 | else |
10282 | goto invalid_kind; | |
10283 | ||
10284 | c_parser_consume_token (parser); | |
10285 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
10286 | { | |
c7412148 | 10287 | location_t here; |
953ff289 DN |
10288 | c_parser_consume_token (parser); |
10289 | ||
c7412148 | 10290 | here = c_parser_peek_token (parser)->location; |
953ff289 | 10291 | t = c_parser_expr_no_commas (parser, NULL).value; |
7d1362bc | 10292 | mark_exp_read (t); |
928c19bb | 10293 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
10294 | |
10295 | if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
3ba09659 AH |
10296 | error_at (here, "schedule %<runtime%> does not take " |
10297 | "a %<chunk_size%> parameter"); | |
a68ab351 | 10298 | else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO) |
3ba09659 AH |
10299 | error_at (here, |
10300 | "schedule %<auto%> does not take " | |
10301 | "a %<chunk_size%> parameter"); | |
953ff289 DN |
10302 | else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE) |
10303 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
10304 | else | |
10305 | c_parser_error (parser, "expected integer expression"); | |
10306 | ||
10307 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10308 | } | |
10309 | else | |
10310 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10311 | "expected %<,%> or %<)%>"); | |
10312 | ||
10313 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
10314 | OMP_CLAUSE_CHAIN (c) = list; | |
10315 | return c; | |
10316 | ||
10317 | invalid_kind: | |
10318 | c_parser_error (parser, "invalid schedule kind"); | |
10319 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
10320 | return list; | |
10321 | } | |
10322 | ||
10323 | /* OpenMP 2.5: | |
10324 | shared ( variable-list ) */ | |
10325 | ||
10326 | static tree | |
10327 | c_parser_omp_clause_shared (c_parser *parser, tree list) | |
10328 | { | |
10329 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list); | |
10330 | } | |
10331 | ||
a68ab351 JJ |
10332 | /* OpenMP 3.0: |
10333 | untied */ | |
10334 | ||
10335 | static tree | |
10336 | c_parser_omp_clause_untied (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10337 | { | |
10338 | tree c; | |
10339 | ||
10340 | /* FIXME: Should we allow duplicates? */ | |
10341 | check_no_duplicate_clause (list, OMP_CLAUSE_UNTIED, "untied"); | |
10342 | ||
c2255bc4 AH |
10343 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
10344 | OMP_CLAUSE_UNTIED); | |
a68ab351 | 10345 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 10346 | |
a68ab351 JJ |
10347 | return c; |
10348 | } | |
10349 | ||
acf0174b JJ |
10350 | /* OpenMP 4.0: |
10351 | inbranch | |
10352 | notinbranch */ | |
953ff289 DN |
10353 | |
10354 | static tree | |
acf0174b JJ |
10355 | c_parser_omp_clause_branch (c_parser *parser ATTRIBUTE_UNUSED, |
10356 | enum omp_clause_code code, tree list) | |
953ff289 | 10357 | { |
acf0174b | 10358 | check_no_duplicate_clause (list, code, omp_clause_code_name[code]); |
953ff289 | 10359 | |
acf0174b JJ |
10360 | tree c = build_omp_clause (c_parser_peek_token (parser)->location, code); |
10361 | OMP_CLAUSE_CHAIN (c) = list; | |
953ff289 | 10362 | |
acf0174b JJ |
10363 | return c; |
10364 | } | |
8085ca15 | 10365 | |
acf0174b JJ |
10366 | /* OpenMP 4.0: |
10367 | parallel | |
10368 | for | |
10369 | sections | |
10370 | taskgroup */ | |
8085ca15 | 10371 | |
acf0174b JJ |
10372 | static tree |
10373 | c_parser_omp_clause_cancelkind (c_parser *parser ATTRIBUTE_UNUSED, | |
10374 | enum omp_clause_code code, tree list) | |
10375 | { | |
10376 | tree c = build_omp_clause (c_parser_peek_token (parser)->location, code); | |
10377 | OMP_CLAUSE_CHAIN (c) = list; | |
10378 | ||
10379 | return c; | |
10380 | } | |
10381 | ||
10382 | /* OpenMP 4.0: | |
10383 | num_teams ( expression ) */ | |
10384 | ||
10385 | static tree | |
10386 | c_parser_omp_clause_num_teams (c_parser *parser, tree list) | |
10387 | { | |
10388 | location_t num_teams_loc = c_parser_peek_token (parser)->location; | |
10389 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10390 | { | |
10391 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
10392 | tree c, t = c_parser_expression (parser).value; | |
10393 | mark_exp_read (t); | |
10394 | t = c_fully_fold (t, false, NULL); | |
10395 | ||
10396 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10397 | ||
10398 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
953ff289 | 10399 | { |
acf0174b JJ |
10400 | c_parser_error (parser, "expected integer expression"); |
10401 | return list; | |
953ff289 DN |
10402 | } |
10403 | ||
acf0174b JJ |
10404 | /* Attempt to statically determine when the number isn't positive. */ |
10405 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, | |
10406 | build_int_cst (TREE_TYPE (t), 0)); | |
10407 | if (CAN_HAVE_LOCATION_P (c)) | |
10408 | SET_EXPR_LOCATION (c, expr_loc); | |
10409 | if (c == boolean_true_node) | |
953ff289 | 10410 | { |
acf0174b JJ |
10411 | warning_at (expr_loc, 0, "%<num_teams%> value must be positive"); |
10412 | t = integer_one_node; | |
953ff289 | 10413 | } |
953ff289 | 10414 | |
acf0174b | 10415 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_TEAMS, "num_teams"); |
953ff289 | 10416 | |
acf0174b JJ |
10417 | c = build_omp_clause (num_teams_loc, OMP_CLAUSE_NUM_TEAMS); |
10418 | OMP_CLAUSE_NUM_TEAMS_EXPR (c) = t; | |
10419 | OMP_CLAUSE_CHAIN (c) = list; | |
10420 | list = c; | |
10421 | } | |
953ff289 | 10422 | |
acf0174b JJ |
10423 | return list; |
10424 | } | |
953ff289 | 10425 | |
acf0174b JJ |
10426 | /* OpenMP 4.0: |
10427 | thread_limit ( expression ) */ | |
953ff289 DN |
10428 | |
10429 | static tree | |
acf0174b | 10430 | c_parser_omp_clause_thread_limit (c_parser *parser, tree list) |
953ff289 | 10431 | { |
acf0174b JJ |
10432 | location_t num_teams_loc = c_parser_peek_token (parser)->location; |
10433 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10434 | { | |
10435 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
10436 | tree c, t = c_parser_expression (parser).value; | |
10437 | mark_exp_read (t); | |
10438 | t = c_fully_fold (t, false, NULL); | |
953ff289 | 10439 | |
acf0174b | 10440 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
953ff289 | 10441 | |
acf0174b JJ |
10442 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) |
10443 | { | |
10444 | c_parser_error (parser, "expected integer expression"); | |
10445 | return list; | |
10446 | } | |
c2255bc4 | 10447 | |
acf0174b JJ |
10448 | /* Attempt to statically determine when the number isn't positive. */ |
10449 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, | |
10450 | build_int_cst (TREE_TYPE (t), 0)); | |
10451 | if (CAN_HAVE_LOCATION_P (c)) | |
10452 | SET_EXPR_LOCATION (c, expr_loc); | |
10453 | if (c == boolean_true_node) | |
10454 | { | |
10455 | warning_at (expr_loc, 0, "%<thread_limit%> value must be positive"); | |
10456 | t = integer_one_node; | |
10457 | } | |
20906c66 | 10458 | |
acf0174b JJ |
10459 | check_no_duplicate_clause (list, OMP_CLAUSE_THREAD_LIMIT, |
10460 | "thread_limit"); | |
20906c66 | 10461 | |
acf0174b JJ |
10462 | c = build_omp_clause (num_teams_loc, OMP_CLAUSE_THREAD_LIMIT); |
10463 | OMP_CLAUSE_THREAD_LIMIT_EXPR (c) = t; | |
10464 | OMP_CLAUSE_CHAIN (c) = list; | |
10465 | list = c; | |
10466 | } | |
20906c66 | 10467 | |
acf0174b JJ |
10468 | return list; |
10469 | } | |
20906c66 | 10470 | |
acf0174b JJ |
10471 | /* OpenMP 4.0: |
10472 | aligned ( variable-list ) | |
10473 | aligned ( variable-list : constant-expression ) */ | |
20906c66 | 10474 | |
acf0174b JJ |
10475 | static tree |
10476 | c_parser_omp_clause_aligned (c_parser *parser, tree list) | |
10477 | { | |
10478 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10479 | tree nl, c; | |
20906c66 | 10480 | |
acf0174b JJ |
10481 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10482 | return list; | |
20906c66 | 10483 | |
acf0174b JJ |
10484 | nl = c_parser_omp_variable_list (parser, clause_loc, |
10485 | OMP_CLAUSE_ALIGNED, list); | |
20906c66 | 10486 | |
acf0174b JJ |
10487 | if (c_parser_next_token_is (parser, CPP_COLON)) |
10488 | { | |
10489 | c_parser_consume_token (parser); | |
10490 | tree alignment = c_parser_expr_no_commas (parser, NULL).value; | |
10491 | mark_exp_read (alignment); | |
10492 | alignment = c_fully_fold (alignment, false, NULL); | |
10493 | if (!INTEGRAL_TYPE_P (TREE_TYPE (alignment)) | |
10494 | && TREE_CODE (alignment) != INTEGER_CST | |
10495 | && tree_int_cst_sgn (alignment) != 1) | |
10496 | { | |
10497 | error_at (clause_loc, "%<aligned%> clause alignment expression must " | |
10498 | "be positive constant integer expression"); | |
10499 | alignment = NULL_TREE; | |
10500 | } | |
953ff289 | 10501 | |
acf0174b JJ |
10502 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
10503 | OMP_CLAUSE_ALIGNED_ALIGNMENT (c) = alignment; | |
10504 | } | |
10505 | ||
10506 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10507 | return nl; | |
10508 | } | |
10509 | ||
10510 | /* OpenMP 4.0: | |
10511 | linear ( variable-list ) | |
10512 | linear ( variable-list : expression ) */ | |
10513 | ||
10514 | static tree | |
41958c28 | 10515 | c_parser_omp_clause_linear (c_parser *parser, tree list, bool is_cilk_simd_fn) |
953ff289 | 10516 | { |
acf0174b JJ |
10517 | location_t clause_loc = c_parser_peek_token (parser)->location; |
10518 | tree nl, c, step; | |
10519 | ||
10520 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10521 | return list; | |
10522 | ||
10523 | nl = c_parser_omp_variable_list (parser, clause_loc, | |
10524 | OMP_CLAUSE_LINEAR, list); | |
10525 | ||
10526 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
10527 | { | |
10528 | c_parser_consume_token (parser); | |
10529 | step = c_parser_expression (parser).value; | |
10530 | mark_exp_read (step); | |
10531 | step = c_fully_fold (step, false, NULL); | |
41958c28 BI |
10532 | if (is_cilk_simd_fn && TREE_CODE (step) == PARM_DECL) |
10533 | { | |
10534 | sorry ("using parameters for %<linear%> step is not supported yet"); | |
10535 | step = integer_one_node; | |
10536 | } | |
acf0174b JJ |
10537 | if (!INTEGRAL_TYPE_P (TREE_TYPE (step))) |
10538 | { | |
10539 | error_at (clause_loc, "%<linear%> clause step expression must " | |
10540 | "be integral"); | |
10541 | step = integer_one_node; | |
10542 | } | |
10543 | ||
10544 | } | |
10545 | else | |
10546 | step = integer_one_node; | |
10547 | ||
10548 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10549 | { | |
10550 | OMP_CLAUSE_LINEAR_STEP (c) = step; | |
10551 | } | |
10552 | ||
10553 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10554 | return nl; | |
10555 | } | |
10556 | ||
10557 | /* OpenMP 4.0: | |
10558 | safelen ( constant-expression ) */ | |
10559 | ||
10560 | static tree | |
10561 | c_parser_omp_clause_safelen (c_parser *parser, tree list) | |
10562 | { | |
10563 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10564 | tree c, t; | |
10565 | ||
10566 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10567 | return list; | |
10568 | ||
10569 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10570 | mark_exp_read (t); | |
10571 | t = c_fully_fold (t, false, NULL); | |
10572 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
10573 | && TREE_CODE (t) != INTEGER_CST | |
10574 | && tree_int_cst_sgn (t) != 1) | |
10575 | { | |
10576 | error_at (clause_loc, "%<safelen%> clause expression must " | |
10577 | "be positive constant integer expression"); | |
10578 | t = NULL_TREE; | |
10579 | } | |
10580 | ||
10581 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10582 | if (t == NULL_TREE || t == error_mark_node) | |
10583 | return list; | |
10584 | ||
10585 | check_no_duplicate_clause (list, OMP_CLAUSE_SAFELEN, "safelen"); | |
10586 | ||
10587 | c = build_omp_clause (clause_loc, OMP_CLAUSE_SAFELEN); | |
10588 | OMP_CLAUSE_SAFELEN_EXPR (c) = t; | |
10589 | OMP_CLAUSE_CHAIN (c) = list; | |
10590 | return c; | |
10591 | } | |
10592 | ||
10593 | /* OpenMP 4.0: | |
10594 | simdlen ( constant-expression ) */ | |
10595 | ||
10596 | static tree | |
10597 | c_parser_omp_clause_simdlen (c_parser *parser, tree list) | |
10598 | { | |
10599 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10600 | tree c, t; | |
10601 | ||
10602 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10603 | return list; | |
10604 | ||
10605 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10606 | mark_exp_read (t); | |
10607 | t = c_fully_fold (t, false, NULL); | |
10608 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
10609 | && TREE_CODE (t) != INTEGER_CST | |
10610 | && tree_int_cst_sgn (t) != 1) | |
10611 | { | |
10612 | error_at (clause_loc, "%<simdlen%> clause expression must " | |
10613 | "be positive constant integer expression"); | |
10614 | t = NULL_TREE; | |
10615 | } | |
10616 | ||
10617 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10618 | if (t == NULL_TREE || t == error_mark_node) | |
10619 | return list; | |
10620 | ||
10621 | check_no_duplicate_clause (list, OMP_CLAUSE_SIMDLEN, "simdlen"); | |
10622 | ||
10623 | c = build_omp_clause (clause_loc, OMP_CLAUSE_SIMDLEN); | |
10624 | OMP_CLAUSE_SIMDLEN_EXPR (c) = t; | |
10625 | OMP_CLAUSE_CHAIN (c) = list; | |
10626 | return c; | |
10627 | } | |
10628 | ||
10629 | /* OpenMP 4.0: | |
10630 | depend ( depend-kind: variable-list ) | |
10631 | ||
10632 | depend-kind: | |
10633 | in | out | inout */ | |
10634 | ||
10635 | static tree | |
10636 | c_parser_omp_clause_depend (c_parser *parser, tree list) | |
10637 | { | |
10638 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10639 | enum omp_clause_depend_kind kind = OMP_CLAUSE_DEPEND_INOUT; | |
10640 | tree nl, c; | |
10641 | ||
10642 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10643 | return list; | |
953ff289 | 10644 | |
20906c66 JJ |
10645 | if (c_parser_next_token_is (parser, CPP_NAME)) |
10646 | { | |
10647 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
acf0174b JJ |
10648 | if (strcmp ("in", p) == 0) |
10649 | kind = OMP_CLAUSE_DEPEND_IN; | |
10650 | else if (strcmp ("inout", p) == 0) | |
10651 | kind = OMP_CLAUSE_DEPEND_INOUT; | |
10652 | else if (strcmp ("out", p) == 0) | |
10653 | kind = OMP_CLAUSE_DEPEND_OUT; | |
20906c66 | 10654 | else |
acf0174b | 10655 | goto invalid_kind; |
20906c66 | 10656 | } |
acf0174b JJ |
10657 | else |
10658 | goto invalid_kind; | |
953ff289 | 10659 | |
acf0174b JJ |
10660 | c_parser_consume_token (parser); |
10661 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
10662 | goto resync_fail; | |
10663 | ||
10664 | nl = c_parser_omp_variable_list (parser, clause_loc, | |
10665 | OMP_CLAUSE_DEPEND, list); | |
10666 | ||
10667 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10668 | OMP_CLAUSE_DEPEND_KIND (c) = kind; | |
10669 | ||
10670 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10671 | return nl; | |
10672 | ||
10673 | invalid_kind: | |
10674 | c_parser_error (parser, "invalid depend kind"); | |
10675 | resync_fail: | |
10676 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10677 | return list; | |
10678 | } | |
10679 | ||
10680 | /* OpenMP 4.0: | |
10681 | map ( map-kind: variable-list ) | |
10682 | map ( variable-list ) | |
10683 | ||
10684 | map-kind: | |
10685 | alloc | to | from | tofrom */ | |
10686 | ||
10687 | static tree | |
10688 | c_parser_omp_clause_map (c_parser *parser, tree list) | |
10689 | { | |
10690 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10691 | enum omp_clause_map_kind kind = OMP_CLAUSE_MAP_TOFROM; | |
10692 | tree nl, c; | |
10693 | ||
10694 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10695 | return list; | |
10696 | ||
10697 | if (c_parser_next_token_is (parser, CPP_NAME) | |
10698 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
20906c66 | 10699 | { |
acf0174b JJ |
10700 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
10701 | if (strcmp ("alloc", p) == 0) | |
10702 | kind = OMP_CLAUSE_MAP_ALLOC; | |
10703 | else if (strcmp ("to", p) == 0) | |
10704 | kind = OMP_CLAUSE_MAP_TO; | |
10705 | else if (strcmp ("from", p) == 0) | |
10706 | kind = OMP_CLAUSE_MAP_FROM; | |
10707 | else if (strcmp ("tofrom", p) == 0) | |
10708 | kind = OMP_CLAUSE_MAP_TOFROM; | |
20906c66 JJ |
10709 | else |
10710 | { | |
acf0174b JJ |
10711 | c_parser_error (parser, "invalid map kind"); |
10712 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10713 | "expected %<)%>"); | |
10714 | return list; | |
20906c66 | 10715 | } |
acf0174b JJ |
10716 | c_parser_consume_token (parser); |
10717 | c_parser_consume_token (parser); | |
20906c66 JJ |
10718 | } |
10719 | ||
acf0174b JJ |
10720 | nl = c_parser_omp_variable_list (parser, clause_loc, OMP_CLAUSE_MAP, list); |
10721 | ||
10722 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10723 | OMP_CLAUSE_MAP_KIND (c) = kind; | |
10724 | ||
10725 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10726 | return nl; | |
10727 | } | |
10728 | ||
10729 | /* OpenMP 4.0: | |
10730 | device ( expression ) */ | |
10731 | ||
10732 | static tree | |
10733 | c_parser_omp_clause_device (c_parser *parser, tree list) | |
10734 | { | |
10735 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10736 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
953ff289 | 10737 | { |
acf0174b JJ |
10738 | tree c, t = c_parser_expr_no_commas (parser, NULL).value; |
10739 | mark_exp_read (t); | |
10740 | t = c_fully_fold (t, false, NULL); | |
10741 | ||
10742 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10743 | ||
10744 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
20906c66 | 10745 | { |
acf0174b JJ |
10746 | c_parser_error (parser, "expected integer expression"); |
10747 | return list; | |
20906c66 | 10748 | } |
953ff289 | 10749 | |
acf0174b | 10750 | check_no_duplicate_clause (list, OMP_CLAUSE_DEVICE, "device"); |
953ff289 | 10751 | |
acf0174b JJ |
10752 | c = build_omp_clause (clause_loc, OMP_CLAUSE_DEVICE); |
10753 | OMP_CLAUSE_DEVICE_ID (c) = t; | |
10754 | OMP_CLAUSE_CHAIN (c) = list; | |
10755 | list = c; | |
10756 | } | |
953ff289 | 10757 | |
acf0174b JJ |
10758 | return list; |
10759 | } | |
10760 | ||
10761 | /* OpenMP 4.0: | |
10762 | dist_schedule ( static ) | |
10763 | dist_schedule ( static , expression ) */ | |
10764 | ||
10765 | static tree | |
10766 | c_parser_omp_clause_dist_schedule (c_parser *parser, tree list) | |
10767 | { | |
10768 | tree c, t = NULL_TREE; | |
10769 | location_t loc = c_parser_peek_token (parser)->location; | |
10770 | ||
10771 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10772 | return list; | |
10773 | ||
10774 | if (!c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
10775 | { | |
10776 | c_parser_error (parser, "invalid dist_schedule kind"); | |
10777 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10778 | "expected %<)%>"); | |
10779 | return list; | |
10780 | } | |
10781 | ||
10782 | c_parser_consume_token (parser); | |
10783 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
10784 | { | |
10785 | c_parser_consume_token (parser); | |
10786 | ||
10787 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10788 | mark_exp_read (t); | |
10789 | t = c_fully_fold (t, false, NULL); | |
10790 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10791 | } | |
10792 | else | |
10793 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10794 | "expected %<,%> or %<)%>"); | |
10795 | ||
10796 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
10797 | if (t == error_mark_node) | |
10798 | return list; | |
10799 | ||
10800 | c = build_omp_clause (loc, OMP_CLAUSE_DIST_SCHEDULE); | |
10801 | OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (c) = t; | |
10802 | OMP_CLAUSE_CHAIN (c) = list; | |
10803 | return c; | |
10804 | } | |
10805 | ||
10806 | /* OpenMP 4.0: | |
10807 | proc_bind ( proc-bind-kind ) | |
10808 | ||
10809 | proc-bind-kind: | |
10810 | master | close | spread */ | |
10811 | ||
10812 | static tree | |
10813 | c_parser_omp_clause_proc_bind (c_parser *parser, tree list) | |
10814 | { | |
10815 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10816 | enum omp_clause_proc_bind_kind kind; | |
10817 | tree c; | |
10818 | ||
10819 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10820 | return list; | |
10821 | ||
10822 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
10823 | { | |
10824 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10825 | if (strcmp ("master", p) == 0) | |
10826 | kind = OMP_CLAUSE_PROC_BIND_MASTER; | |
10827 | else if (strcmp ("close", p) == 0) | |
10828 | kind = OMP_CLAUSE_PROC_BIND_CLOSE; | |
10829 | else if (strcmp ("spread", p) == 0) | |
10830 | kind = OMP_CLAUSE_PROC_BIND_SPREAD; | |
10831 | else | |
10832 | goto invalid_kind; | |
10833 | } | |
10834 | else | |
10835 | goto invalid_kind; | |
10836 | ||
10837 | c_parser_consume_token (parser); | |
10838 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10839 | c = build_omp_clause (clause_loc, OMP_CLAUSE_PROC_BIND); | |
10840 | OMP_CLAUSE_PROC_BIND_KIND (c) = kind; | |
10841 | OMP_CLAUSE_CHAIN (c) = list; | |
10842 | return c; | |
10843 | ||
10844 | invalid_kind: | |
10845 | c_parser_error (parser, "invalid proc_bind kind"); | |
10846 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10847 | return list; | |
10848 | } | |
10849 | ||
10850 | /* OpenMP 4.0: | |
10851 | to ( variable-list ) */ | |
10852 | ||
10853 | static tree | |
10854 | c_parser_omp_clause_to (c_parser *parser, tree list) | |
10855 | { | |
10856 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_TO, list); | |
10857 | } | |
10858 | ||
10859 | /* OpenMP 4.0: | |
10860 | from ( variable-list ) */ | |
10861 | ||
10862 | static tree | |
10863 | c_parser_omp_clause_from (c_parser *parser, tree list) | |
10864 | { | |
10865 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FROM, list); | |
10866 | } | |
10867 | ||
10868 | /* OpenMP 4.0: | |
10869 | uniform ( variable-list ) */ | |
10870 | ||
10871 | static tree | |
10872 | c_parser_omp_clause_uniform (c_parser *parser, tree list) | |
10873 | { | |
10874 | /* The clauses location. */ | |
10875 | location_t loc = c_parser_peek_token (parser)->location; | |
10876 | ||
10877 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10878 | { | |
10879 | list = c_parser_omp_variable_list (parser, loc, OMP_CLAUSE_UNIFORM, | |
10880 | list); | |
10881 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10882 | } | |
10883 | return list; | |
10884 | } | |
10885 | ||
10886 | /* Parse all OpenMP clauses. The set clauses allowed by the directive | |
10887 | is a bitmask in MASK. Return the list of clauses found; the result | |
10888 | of clause default goes in *pdefault. */ | |
10889 | ||
10890 | static tree | |
10891 | c_parser_omp_all_clauses (c_parser *parser, omp_clause_mask mask, | |
10892 | const char *where, bool finish_p = true) | |
10893 | { | |
10894 | tree clauses = NULL; | |
41958c28 | 10895 | bool first = true, cilk_simd_fn = false; |
acf0174b JJ |
10896 | |
10897 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
10898 | { | |
10899 | location_t here; | |
10900 | pragma_omp_clause c_kind; | |
10901 | const char *c_name; | |
10902 | tree prev = clauses; | |
10903 | ||
10904 | if (!first && c_parser_next_token_is (parser, CPP_COMMA)) | |
10905 | c_parser_consume_token (parser); | |
10906 | ||
10907 | here = c_parser_peek_token (parser)->location; | |
10908 | c_kind = c_parser_omp_clause_name (parser); | |
10909 | ||
10910 | switch (c_kind) | |
953ff289 | 10911 | { |
acf0174b JJ |
10912 | case PRAGMA_OMP_CLAUSE_COLLAPSE: |
10913 | clauses = c_parser_omp_clause_collapse (parser, clauses); | |
10914 | c_name = "collapse"; | |
953ff289 | 10915 | break; |
acf0174b JJ |
10916 | case PRAGMA_OMP_CLAUSE_COPYIN: |
10917 | clauses = c_parser_omp_clause_copyin (parser, clauses); | |
10918 | c_name = "copyin"; | |
953ff289 | 10919 | break; |
acf0174b JJ |
10920 | case PRAGMA_OMP_CLAUSE_COPYPRIVATE: |
10921 | clauses = c_parser_omp_clause_copyprivate (parser, clauses); | |
10922 | c_name = "copyprivate"; | |
953ff289 | 10923 | break; |
acf0174b JJ |
10924 | case PRAGMA_OMP_CLAUSE_DEFAULT: |
10925 | clauses = c_parser_omp_clause_default (parser, clauses); | |
10926 | c_name = "default"; | |
953ff289 | 10927 | break; |
acf0174b JJ |
10928 | case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE: |
10929 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
10930 | c_name = "firstprivate"; | |
953ff289 | 10931 | break; |
acf0174b JJ |
10932 | case PRAGMA_OMP_CLAUSE_FINAL: |
10933 | clauses = c_parser_omp_clause_final (parser, clauses); | |
10934 | c_name = "final"; | |
953ff289 | 10935 | break; |
acf0174b JJ |
10936 | case PRAGMA_OMP_CLAUSE_IF: |
10937 | clauses = c_parser_omp_clause_if (parser, clauses); | |
10938 | c_name = "if"; | |
953ff289 | 10939 | break; |
acf0174b JJ |
10940 | case PRAGMA_OMP_CLAUSE_LASTPRIVATE: |
10941 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
10942 | c_name = "lastprivate"; | |
953ff289 | 10943 | break; |
acf0174b JJ |
10944 | case PRAGMA_OMP_CLAUSE_MERGEABLE: |
10945 | clauses = c_parser_omp_clause_mergeable (parser, clauses); | |
10946 | c_name = "mergeable"; | |
953ff289 | 10947 | break; |
acf0174b JJ |
10948 | case PRAGMA_OMP_CLAUSE_NOWAIT: |
10949 | clauses = c_parser_omp_clause_nowait (parser, clauses); | |
10950 | c_name = "nowait"; | |
10951 | break; | |
10952 | case PRAGMA_OMP_CLAUSE_NUM_THREADS: | |
10953 | clauses = c_parser_omp_clause_num_threads (parser, clauses); | |
10954 | c_name = "num_threads"; | |
10955 | break; | |
10956 | case PRAGMA_OMP_CLAUSE_ORDERED: | |
10957 | clauses = c_parser_omp_clause_ordered (parser, clauses); | |
10958 | c_name = "ordered"; | |
10959 | break; | |
10960 | case PRAGMA_OMP_CLAUSE_PRIVATE: | |
10961 | clauses = c_parser_omp_clause_private (parser, clauses); | |
10962 | c_name = "private"; | |
10963 | break; | |
10964 | case PRAGMA_OMP_CLAUSE_REDUCTION: | |
10965 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
10966 | c_name = "reduction"; | |
10967 | break; | |
10968 | case PRAGMA_OMP_CLAUSE_SCHEDULE: | |
10969 | clauses = c_parser_omp_clause_schedule (parser, clauses); | |
10970 | c_name = "schedule"; | |
10971 | break; | |
10972 | case PRAGMA_OMP_CLAUSE_SHARED: | |
10973 | clauses = c_parser_omp_clause_shared (parser, clauses); | |
10974 | c_name = "shared"; | |
10975 | break; | |
10976 | case PRAGMA_OMP_CLAUSE_UNTIED: | |
10977 | clauses = c_parser_omp_clause_untied (parser, clauses); | |
10978 | c_name = "untied"; | |
10979 | break; | |
10980 | case PRAGMA_OMP_CLAUSE_INBRANCH: | |
41958c28 | 10981 | case PRAGMA_CILK_CLAUSE_MASK: |
acf0174b JJ |
10982 | clauses = c_parser_omp_clause_branch (parser, OMP_CLAUSE_INBRANCH, |
10983 | clauses); | |
10984 | c_name = "inbranch"; | |
10985 | break; | |
10986 | case PRAGMA_OMP_CLAUSE_NOTINBRANCH: | |
41958c28 | 10987 | case PRAGMA_CILK_CLAUSE_NOMASK: |
acf0174b JJ |
10988 | clauses = c_parser_omp_clause_branch (parser, OMP_CLAUSE_NOTINBRANCH, |
10989 | clauses); | |
10990 | c_name = "notinbranch"; | |
10991 | break; | |
10992 | case PRAGMA_OMP_CLAUSE_PARALLEL: | |
10993 | clauses | |
10994 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_PARALLEL, | |
10995 | clauses); | |
10996 | c_name = "parallel"; | |
10997 | if (!first) | |
20906c66 | 10998 | { |
acf0174b JJ |
10999 | clause_not_first: |
11000 | error_at (here, "%qs must be the first clause of %qs", | |
11001 | c_name, where); | |
11002 | clauses = prev; | |
11003 | } | |
11004 | break; | |
11005 | case PRAGMA_OMP_CLAUSE_FOR: | |
11006 | clauses | |
11007 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_FOR, | |
11008 | clauses); | |
11009 | c_name = "for"; | |
11010 | if (!first) | |
11011 | goto clause_not_first; | |
11012 | break; | |
11013 | case PRAGMA_OMP_CLAUSE_SECTIONS: | |
11014 | clauses | |
11015 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_SECTIONS, | |
11016 | clauses); | |
11017 | c_name = "sections"; | |
11018 | if (!first) | |
11019 | goto clause_not_first; | |
11020 | break; | |
11021 | case PRAGMA_OMP_CLAUSE_TASKGROUP: | |
11022 | clauses | |
11023 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_TASKGROUP, | |
11024 | clauses); | |
11025 | c_name = "taskgroup"; | |
11026 | if (!first) | |
11027 | goto clause_not_first; | |
11028 | break; | |
11029 | case PRAGMA_OMP_CLAUSE_TO: | |
11030 | clauses = c_parser_omp_clause_to (parser, clauses); | |
11031 | c_name = "to"; | |
11032 | break; | |
11033 | case PRAGMA_OMP_CLAUSE_FROM: | |
11034 | clauses = c_parser_omp_clause_from (parser, clauses); | |
11035 | c_name = "from"; | |
11036 | break; | |
11037 | case PRAGMA_OMP_CLAUSE_UNIFORM: | |
11038 | clauses = c_parser_omp_clause_uniform (parser, clauses); | |
11039 | c_name = "uniform"; | |
11040 | break; | |
11041 | case PRAGMA_OMP_CLAUSE_NUM_TEAMS: | |
11042 | clauses = c_parser_omp_clause_num_teams (parser, clauses); | |
11043 | c_name = "num_teams"; | |
11044 | break; | |
11045 | case PRAGMA_OMP_CLAUSE_THREAD_LIMIT: | |
11046 | clauses = c_parser_omp_clause_thread_limit (parser, clauses); | |
11047 | c_name = "thread_limit"; | |
11048 | break; | |
11049 | case PRAGMA_OMP_CLAUSE_ALIGNED: | |
11050 | clauses = c_parser_omp_clause_aligned (parser, clauses); | |
11051 | c_name = "aligned"; | |
11052 | break; | |
41958c28 BI |
11053 | case PRAGMA_OMP_CLAUSE_LINEAR: |
11054 | if (((mask >> PRAGMA_CILK_CLAUSE_VECTORLENGTH) & 1) != 0) | |
11055 | cilk_simd_fn = true; | |
11056 | clauses = c_parser_omp_clause_linear (parser, clauses, cilk_simd_fn); | |
acf0174b JJ |
11057 | c_name = "linear"; |
11058 | break; | |
11059 | case PRAGMA_OMP_CLAUSE_DEPEND: | |
11060 | clauses = c_parser_omp_clause_depend (parser, clauses); | |
11061 | c_name = "depend"; | |
11062 | break; | |
11063 | case PRAGMA_OMP_CLAUSE_MAP: | |
11064 | clauses = c_parser_omp_clause_map (parser, clauses); | |
11065 | c_name = "map"; | |
11066 | break; | |
11067 | case PRAGMA_OMP_CLAUSE_DEVICE: | |
11068 | clauses = c_parser_omp_clause_device (parser, clauses); | |
11069 | c_name = "device"; | |
11070 | break; | |
11071 | case PRAGMA_OMP_CLAUSE_DIST_SCHEDULE: | |
11072 | clauses = c_parser_omp_clause_dist_schedule (parser, clauses); | |
11073 | c_name = "dist_schedule"; | |
11074 | break; | |
11075 | case PRAGMA_OMP_CLAUSE_PROC_BIND: | |
11076 | clauses = c_parser_omp_clause_proc_bind (parser, clauses); | |
11077 | c_name = "proc_bind"; | |
11078 | break; | |
11079 | case PRAGMA_OMP_CLAUSE_SAFELEN: | |
11080 | clauses = c_parser_omp_clause_safelen (parser, clauses); | |
11081 | c_name = "safelen"; | |
11082 | break; | |
41958c28 BI |
11083 | case PRAGMA_CILK_CLAUSE_VECTORLENGTH: |
11084 | clauses = c_parser_cilk_clause_vectorlength (parser, clauses, true); | |
11085 | c_name = "simdlen"; | |
11086 | break; | |
acf0174b JJ |
11087 | case PRAGMA_OMP_CLAUSE_SIMDLEN: |
11088 | clauses = c_parser_omp_clause_simdlen (parser, clauses); | |
11089 | c_name = "simdlen"; | |
11090 | break; | |
953ff289 | 11091 | default: |
acf0174b | 11092 | c_parser_error (parser, "expected %<#pragma omp%> clause"); |
953ff289 DN |
11093 | goto saw_error; |
11094 | } | |
11095 | ||
acf0174b JJ |
11096 | first = false; |
11097 | ||
11098 | if (((mask >> c_kind) & 1) == 0 && !parser->error) | |
11099 | { | |
11100 | /* Remove the invalid clause(s) from the list to avoid | |
11101 | confusing the rest of the compiler. */ | |
11102 | clauses = prev; | |
11103 | error_at (here, "%qs is not valid for %qs", c_name, where); | |
11104 | } | |
11105 | } | |
11106 | ||
11107 | saw_error: | |
11108 | c_parser_skip_to_pragma_eol (parser); | |
11109 | ||
11110 | if (finish_p) | |
11111 | return c_finish_omp_clauses (clauses); | |
11112 | ||
11113 | return clauses; | |
11114 | } | |
11115 | ||
11116 | /* OpenMP 2.5: | |
11117 | structured-block: | |
11118 | statement | |
11119 | ||
11120 | In practice, we're also interested in adding the statement to an | |
11121 | outer node. So it is convenient if we work around the fact that | |
11122 | c_parser_statement calls add_stmt. */ | |
11123 | ||
11124 | static tree | |
11125 | c_parser_omp_structured_block (c_parser *parser) | |
11126 | { | |
11127 | tree stmt = push_stmt_list (); | |
11128 | c_parser_statement (parser); | |
11129 | return pop_stmt_list (stmt); | |
11130 | } | |
11131 | ||
11132 | /* OpenMP 2.5: | |
11133 | # pragma omp atomic new-line | |
11134 | expression-stmt | |
11135 | ||
11136 | expression-stmt: | |
11137 | x binop= expr | x++ | ++x | x-- | --x | |
11138 | binop: | |
11139 | +, *, -, /, &, ^, |, <<, >> | |
11140 | ||
11141 | where x is an lvalue expression with scalar type. | |
11142 | ||
11143 | OpenMP 3.1: | |
11144 | # pragma omp atomic new-line | |
11145 | update-stmt | |
11146 | ||
11147 | # pragma omp atomic read new-line | |
11148 | read-stmt | |
11149 | ||
11150 | # pragma omp atomic write new-line | |
11151 | write-stmt | |
11152 | ||
11153 | # pragma omp atomic update new-line | |
11154 | update-stmt | |
11155 | ||
11156 | # pragma omp atomic capture new-line | |
11157 | capture-stmt | |
11158 | ||
11159 | # pragma omp atomic capture new-line | |
11160 | capture-block | |
11161 | ||
11162 | read-stmt: | |
11163 | v = x | |
11164 | write-stmt: | |
11165 | x = expr | |
11166 | update-stmt: | |
11167 | expression-stmt | x = x binop expr | |
11168 | capture-stmt: | |
11169 | v = expression-stmt | |
11170 | capture-block: | |
11171 | { v = x; update-stmt; } | { update-stmt; v = x; } | |
11172 | ||
11173 | OpenMP 4.0: | |
11174 | update-stmt: | |
11175 | expression-stmt | x = x binop expr | x = expr binop x | |
11176 | capture-stmt: | |
11177 | v = update-stmt | |
11178 | capture-block: | |
11179 | { v = x; update-stmt; } | { update-stmt; v = x; } | { v = x; x = expr; } | |
11180 | ||
11181 | where x and v are lvalue expressions with scalar type. | |
11182 | ||
11183 | LOC is the location of the #pragma token. */ | |
11184 | ||
11185 | static void | |
11186 | c_parser_omp_atomic (location_t loc, c_parser *parser) | |
11187 | { | |
11188 | tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE; | |
11189 | tree lhs1 = NULL_TREE, rhs1 = NULL_TREE; | |
11190 | tree stmt, orig_lhs, unfolded_lhs = NULL_TREE, unfolded_lhs1 = NULL_TREE; | |
11191 | enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR; | |
11192 | struct c_expr expr; | |
11193 | location_t eloc; | |
11194 | bool structured_block = false; | |
11195 | bool swapped = false; | |
11196 | bool seq_cst = false; | |
11197 | ||
11198 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
11199 | { | |
11200 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11201 | ||
11202 | if (!strcmp (p, "read")) | |
11203 | code = OMP_ATOMIC_READ; | |
11204 | else if (!strcmp (p, "write")) | |
11205 | code = NOP_EXPR; | |
11206 | else if (!strcmp (p, "update")) | |
11207 | code = OMP_ATOMIC; | |
11208 | else if (!strcmp (p, "capture")) | |
11209 | code = OMP_ATOMIC_CAPTURE_NEW; | |
11210 | else | |
11211 | p = NULL; | |
11212 | if (p) | |
11213 | c_parser_consume_token (parser); | |
11214 | } | |
11215 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
11216 | { | |
11217 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11218 | if (!strcmp (p, "seq_cst")) | |
11219 | { | |
11220 | seq_cst = true; | |
11221 | c_parser_consume_token (parser); | |
11222 | } | |
11223 | } | |
11224 | c_parser_skip_to_pragma_eol (parser); | |
11225 | ||
11226 | switch (code) | |
11227 | { | |
11228 | case OMP_ATOMIC_READ: | |
11229 | case NOP_EXPR: /* atomic write */ | |
11230 | v = c_parser_unary_expression (parser).value; | |
11231 | v = c_fully_fold (v, false, NULL); | |
11232 | if (v == error_mark_node) | |
11233 | goto saw_error; | |
11234 | loc = c_parser_peek_token (parser)->location; | |
11235 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11236 | goto saw_error; | |
11237 | if (code == NOP_EXPR) | |
11238 | lhs = c_parser_expression (parser).value; | |
11239 | else | |
11240 | lhs = c_parser_unary_expression (parser).value; | |
11241 | lhs = c_fully_fold (lhs, false, NULL); | |
11242 | if (lhs == error_mark_node) | |
11243 | goto saw_error; | |
11244 | if (code == NOP_EXPR) | |
11245 | { | |
11246 | /* atomic write is represented by OMP_ATOMIC with NOP_EXPR | |
11247 | opcode. */ | |
11248 | code = OMP_ATOMIC; | |
11249 | rhs = lhs; | |
11250 | lhs = v; | |
11251 | v = NULL_TREE; | |
11252 | } | |
11253 | goto done; | |
11254 | case OMP_ATOMIC_CAPTURE_NEW: | |
11255 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
11256 | { | |
11257 | c_parser_consume_token (parser); | |
11258 | structured_block = true; | |
11259 | } | |
11260 | else | |
11261 | { | |
11262 | v = c_parser_unary_expression (parser).value; | |
11263 | v = c_fully_fold (v, false, NULL); | |
11264 | if (v == error_mark_node) | |
11265 | goto saw_error; | |
11266 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11267 | goto saw_error; | |
11268 | } | |
11269 | break; | |
11270 | default: | |
11271 | break; | |
11272 | } | |
11273 | ||
11274 | /* For structured_block case we don't know yet whether | |
11275 | old or new x should be captured. */ | |
11276 | restart: | |
11277 | eloc = c_parser_peek_token (parser)->location; | |
11278 | expr = c_parser_unary_expression (parser); | |
11279 | lhs = expr.value; | |
11280 | expr = default_function_array_conversion (eloc, expr); | |
11281 | unfolded_lhs = expr.value; | |
11282 | lhs = c_fully_fold (lhs, false, NULL); | |
11283 | orig_lhs = lhs; | |
11284 | switch (TREE_CODE (lhs)) | |
11285 | { | |
11286 | case ERROR_MARK: | |
11287 | saw_error: | |
11288 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11289 | if (structured_block) | |
11290 | { | |
11291 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
11292 | c_parser_consume_token (parser); | |
11293 | else if (code == OMP_ATOMIC_CAPTURE_NEW) | |
11294 | { | |
11295 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11296 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
11297 | c_parser_consume_token (parser); | |
11298 | } | |
11299 | } | |
11300 | return; | |
11301 | ||
11302 | case POSTINCREMENT_EXPR: | |
11303 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) | |
11304 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11305 | /* FALLTHROUGH */ | |
11306 | case PREINCREMENT_EXPR: | |
11307 | lhs = TREE_OPERAND (lhs, 0); | |
11308 | unfolded_lhs = NULL_TREE; | |
11309 | opcode = PLUS_EXPR; | |
11310 | rhs = integer_one_node; | |
11311 | break; | |
11312 | ||
11313 | case POSTDECREMENT_EXPR: | |
11314 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) | |
11315 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11316 | /* FALLTHROUGH */ | |
11317 | case PREDECREMENT_EXPR: | |
11318 | lhs = TREE_OPERAND (lhs, 0); | |
11319 | unfolded_lhs = NULL_TREE; | |
11320 | opcode = MINUS_EXPR; | |
11321 | rhs = integer_one_node; | |
11322 | break; | |
11323 | ||
11324 | case COMPOUND_EXPR: | |
11325 | if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR | |
11326 | && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR | |
11327 | && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR | |
11328 | && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0) | |
11329 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND | |
11330 | (TREE_OPERAND (lhs, 1), 0), 0))) | |
11331 | == BOOLEAN_TYPE) | |
11332 | /* Undo effects of boolean_increment for post {in,de}crement. */ | |
11333 | lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0); | |
11334 | /* FALLTHRU */ | |
11335 | case MODIFY_EXPR: | |
11336 | if (TREE_CODE (lhs) == MODIFY_EXPR | |
11337 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE) | |
11338 | { | |
11339 | /* Undo effects of boolean_increment. */ | |
11340 | if (integer_onep (TREE_OPERAND (lhs, 1))) | |
11341 | { | |
11342 | /* This is pre or post increment. */ | |
11343 | rhs = TREE_OPERAND (lhs, 1); | |
11344 | lhs = TREE_OPERAND (lhs, 0); | |
11345 | unfolded_lhs = NULL_TREE; | |
11346 | opcode = NOP_EXPR; | |
11347 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
11348 | && !structured_block | |
11349 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
11350 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11351 | break; | |
11352 | } | |
11353 | if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR | |
11354 | && TREE_OPERAND (lhs, 0) | |
11355 | == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) | |
11356 | { | |
11357 | /* This is pre or post decrement. */ | |
11358 | rhs = TREE_OPERAND (lhs, 1); | |
11359 | lhs = TREE_OPERAND (lhs, 0); | |
11360 | unfolded_lhs = NULL_TREE; | |
11361 | opcode = NOP_EXPR; | |
11362 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
11363 | && !structured_block | |
11364 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
11365 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11366 | break; | |
11367 | } | |
11368 | } | |
11369 | /* FALLTHRU */ | |
11370 | default: | |
11371 | switch (c_parser_peek_token (parser)->type) | |
11372 | { | |
11373 | case CPP_MULT_EQ: | |
11374 | opcode = MULT_EXPR; | |
11375 | break; | |
11376 | case CPP_DIV_EQ: | |
11377 | opcode = TRUNC_DIV_EXPR; | |
11378 | break; | |
11379 | case CPP_PLUS_EQ: | |
11380 | opcode = PLUS_EXPR; | |
11381 | break; | |
11382 | case CPP_MINUS_EQ: | |
11383 | opcode = MINUS_EXPR; | |
11384 | break; | |
11385 | case CPP_LSHIFT_EQ: | |
11386 | opcode = LSHIFT_EXPR; | |
11387 | break; | |
11388 | case CPP_RSHIFT_EQ: | |
11389 | opcode = RSHIFT_EXPR; | |
11390 | break; | |
11391 | case CPP_AND_EQ: | |
11392 | opcode = BIT_AND_EXPR; | |
11393 | break; | |
11394 | case CPP_OR_EQ: | |
11395 | opcode = BIT_IOR_EXPR; | |
11396 | break; | |
11397 | case CPP_XOR_EQ: | |
11398 | opcode = BIT_XOR_EXPR; | |
11399 | break; | |
11400 | case CPP_EQ: | |
11401 | c_parser_consume_token (parser); | |
11402 | eloc = c_parser_peek_token (parser)->location; | |
11403 | expr = c_parser_expr_no_commas (parser, NULL, unfolded_lhs); | |
11404 | rhs1 = expr.value; | |
11405 | switch (TREE_CODE (rhs1)) | |
11406 | { | |
11407 | case MULT_EXPR: | |
11408 | case TRUNC_DIV_EXPR: | |
11409 | case PLUS_EXPR: | |
11410 | case MINUS_EXPR: | |
11411 | case LSHIFT_EXPR: | |
11412 | case RSHIFT_EXPR: | |
11413 | case BIT_AND_EXPR: | |
11414 | case BIT_IOR_EXPR: | |
11415 | case BIT_XOR_EXPR: | |
11416 | if (c_tree_equal (TREE_OPERAND (rhs1, 0), unfolded_lhs)) | |
11417 | { | |
11418 | opcode = TREE_CODE (rhs1); | |
11419 | rhs = c_fully_fold (TREE_OPERAND (rhs1, 1), false, NULL); | |
11420 | rhs1 = c_fully_fold (TREE_OPERAND (rhs1, 0), false, NULL); | |
11421 | goto stmt_done; | |
11422 | } | |
11423 | if (c_tree_equal (TREE_OPERAND (rhs1, 1), unfolded_lhs)) | |
11424 | { | |
11425 | opcode = TREE_CODE (rhs1); | |
11426 | rhs = c_fully_fold (TREE_OPERAND (rhs1, 0), false, NULL); | |
11427 | rhs1 = c_fully_fold (TREE_OPERAND (rhs1, 1), false, NULL); | |
11428 | swapped = !commutative_tree_code (opcode); | |
11429 | goto stmt_done; | |
11430 | } | |
11431 | break; | |
11432 | case ERROR_MARK: | |
11433 | goto saw_error; | |
11434 | default: | |
11435 | break; | |
11436 | } | |
11437 | if (c_parser_peek_token (parser)->type == CPP_SEMICOLON) | |
11438 | { | |
11439 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
11440 | { | |
11441 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11442 | v = lhs; | |
11443 | lhs = NULL_TREE; | |
11444 | expr = default_function_array_read_conversion (eloc, expr); | |
11445 | unfolded_lhs1 = expr.value; | |
11446 | lhs1 = c_fully_fold (unfolded_lhs1, false, NULL); | |
11447 | rhs1 = NULL_TREE; | |
11448 | c_parser_consume_token (parser); | |
11449 | goto restart; | |
11450 | } | |
11451 | if (structured_block) | |
11452 | { | |
11453 | opcode = NOP_EXPR; | |
11454 | expr = default_function_array_read_conversion (eloc, expr); | |
11455 | rhs = c_fully_fold (expr.value, false, NULL); | |
11456 | rhs1 = NULL_TREE; | |
11457 | goto stmt_done; | |
11458 | } | |
11459 | } | |
11460 | c_parser_error (parser, "invalid form of %<#pragma omp atomic%>"); | |
11461 | goto saw_error; | |
11462 | default: | |
11463 | c_parser_error (parser, | |
11464 | "invalid operator for %<#pragma omp atomic%>"); | |
11465 | goto saw_error; | |
11466 | } | |
11467 | ||
11468 | /* Arrange to pass the location of the assignment operator to | |
11469 | c_finish_omp_atomic. */ | |
11470 | loc = c_parser_peek_token (parser)->location; | |
11471 | c_parser_consume_token (parser); | |
11472 | eloc = c_parser_peek_token (parser)->location; | |
11473 | expr = c_parser_expression (parser); | |
11474 | expr = default_function_array_read_conversion (eloc, expr); | |
11475 | rhs = expr.value; | |
11476 | rhs = c_fully_fold (rhs, false, NULL); | |
11477 | break; | |
11478 | } | |
11479 | stmt_done: | |
11480 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
11481 | { | |
11482 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
11483 | goto saw_error; | |
11484 | v = c_parser_unary_expression (parser).value; | |
11485 | v = c_fully_fold (v, false, NULL); | |
11486 | if (v == error_mark_node) | |
11487 | goto saw_error; | |
11488 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11489 | goto saw_error; | |
11490 | eloc = c_parser_peek_token (parser)->location; | |
11491 | expr = c_parser_unary_expression (parser); | |
11492 | lhs1 = expr.value; | |
11493 | expr = default_function_array_read_conversion (eloc, expr); | |
11494 | unfolded_lhs1 = expr.value; | |
11495 | lhs1 = c_fully_fold (lhs1, false, NULL); | |
11496 | if (lhs1 == error_mark_node) | |
11497 | goto saw_error; | |
11498 | } | |
11499 | if (structured_block) | |
11500 | { | |
11501 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11502 | c_parser_require (parser, CPP_CLOSE_BRACE, "expected %<}%>"); | |
11503 | } | |
11504 | done: | |
11505 | if (unfolded_lhs && unfolded_lhs1 | |
11506 | && !c_tree_equal (unfolded_lhs, unfolded_lhs1)) | |
11507 | { | |
11508 | error ("%<#pragma omp atomic capture%> uses two different " | |
11509 | "expressions for memory"); | |
11510 | stmt = error_mark_node; | |
11511 | } | |
11512 | else | |
11513 | stmt = c_finish_omp_atomic (loc, code, opcode, lhs, rhs, v, lhs1, rhs1, | |
11514 | swapped, seq_cst); | |
11515 | if (stmt != error_mark_node) | |
11516 | add_stmt (stmt); | |
11517 | ||
11518 | if (!structured_block) | |
11519 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11520 | } | |
11521 | ||
11522 | ||
11523 | /* OpenMP 2.5: | |
11524 | # pragma omp barrier new-line | |
11525 | */ | |
11526 | ||
11527 | static void | |
11528 | c_parser_omp_barrier (c_parser *parser) | |
11529 | { | |
11530 | location_t loc = c_parser_peek_token (parser)->location; | |
11531 | c_parser_consume_pragma (parser); | |
11532 | c_parser_skip_to_pragma_eol (parser); | |
11533 | ||
11534 | c_finish_omp_barrier (loc); | |
11535 | } | |
11536 | ||
11537 | /* OpenMP 2.5: | |
11538 | # pragma omp critical [(name)] new-line | |
11539 | structured-block | |
11540 | ||
11541 | LOC is the location of the #pragma itself. */ | |
11542 | ||
11543 | static tree | |
11544 | c_parser_omp_critical (location_t loc, c_parser *parser) | |
11545 | { | |
11546 | tree stmt, name = NULL; | |
11547 | ||
11548 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
11549 | { | |
11550 | c_parser_consume_token (parser); | |
11551 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
11552 | { | |
11553 | name = c_parser_peek_token (parser)->value; | |
11554 | c_parser_consume_token (parser); | |
11555 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11556 | } | |
11557 | else | |
11558 | c_parser_error (parser, "expected identifier"); | |
11559 | } | |
11560 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
11561 | c_parser_error (parser, "expected %<(%> or end of line"); | |
11562 | c_parser_skip_to_pragma_eol (parser); | |
11563 | ||
11564 | stmt = c_parser_omp_structured_block (parser); | |
11565 | return c_finish_omp_critical (loc, stmt, name); | |
11566 | } | |
11567 | ||
11568 | /* OpenMP 2.5: | |
11569 | # pragma omp flush flush-vars[opt] new-line | |
11570 | ||
11571 | flush-vars: | |
11572 | ( variable-list ) */ | |
11573 | ||
11574 | static void | |
11575 | c_parser_omp_flush (c_parser *parser) | |
11576 | { | |
11577 | location_t loc = c_parser_peek_token (parser)->location; | |
11578 | c_parser_consume_pragma (parser); | |
11579 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
11580 | c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); | |
11581 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
11582 | c_parser_error (parser, "expected %<(%> or end of line"); | |
11583 | c_parser_skip_to_pragma_eol (parser); | |
11584 | ||
11585 | c_finish_omp_flush (loc); | |
11586 | } | |
11587 | ||
11588 | /* Parse the restricted form of the for statement allowed by OpenMP. | |
11589 | The real trick here is to determine the loop control variable early | |
11590 | so that we can push a new decl if necessary to make it private. | |
11591 | LOC is the location of the OMP in "#pragma omp". */ | |
11592 | ||
11593 | static tree | |
11594 | c_parser_omp_for_loop (location_t loc, c_parser *parser, enum tree_code code, | |
11595 | tree clauses, tree *cclauses) | |
11596 | { | |
11597 | tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl; | |
11598 | tree declv, condv, incrv, initv, ret = NULL; | |
11599 | bool fail = false, open_brace_parsed = false; | |
11600 | int i, collapse = 1, nbraces = 0; | |
11601 | location_t for_loc; | |
11602 | vec<tree, va_gc> *for_block = make_tree_vector (); | |
11603 | ||
11604 | for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl)) | |
11605 | if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE) | |
9439e9a1 | 11606 | collapse = tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (cl)); |
acf0174b JJ |
11607 | |
11608 | gcc_assert (collapse >= 1); | |
11609 | ||
11610 | declv = make_tree_vec (collapse); | |
11611 | initv = make_tree_vec (collapse); | |
11612 | condv = make_tree_vec (collapse); | |
11613 | incrv = make_tree_vec (collapse); | |
11614 | ||
11615 | if (!c_parser_next_token_is_keyword (parser, RID_FOR)) | |
11616 | { | |
11617 | c_parser_error (parser, "for statement expected"); | |
11618 | return NULL; | |
11619 | } | |
11620 | for_loc = c_parser_peek_token (parser)->location; | |
11621 | c_parser_consume_token (parser); | |
11622 | ||
11623 | for (i = 0; i < collapse; i++) | |
11624 | { | |
11625 | int bracecount = 0; | |
11626 | ||
11627 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
11628 | goto pop_scopes; | |
11629 | ||
11630 | /* Parse the initialization declaration or expression. */ | |
11631 | if (c_parser_next_tokens_start_declaration (parser)) | |
11632 | { | |
11633 | if (i > 0) | |
11634 | vec_safe_push (for_block, c_begin_compound_stmt (true)); | |
11635 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, | |
11636 | NULL, vNULL); | |
11637 | decl = check_for_loop_decls (for_loc, flag_isoc99); | |
11638 | if (decl == NULL) | |
11639 | goto error_init; | |
11640 | if (DECL_INITIAL (decl) == error_mark_node) | |
11641 | decl = error_mark_node; | |
11642 | init = decl; | |
11643 | } | |
11644 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
11645 | && c_parser_peek_2nd_token (parser)->type == CPP_EQ) | |
11646 | { | |
11647 | struct c_expr decl_exp; | |
11648 | struct c_expr init_exp; | |
11649 | location_t init_loc; | |
11650 | ||
11651 | decl_exp = c_parser_postfix_expression (parser); | |
11652 | decl = decl_exp.value; | |
11653 | ||
11654 | c_parser_require (parser, CPP_EQ, "expected %<=%>"); | |
11655 | ||
11656 | init_loc = c_parser_peek_token (parser)->location; | |
11657 | init_exp = c_parser_expr_no_commas (parser, NULL); | |
11658 | init_exp = default_function_array_read_conversion (init_loc, | |
11659 | init_exp); | |
11660 | init = build_modify_expr (init_loc, decl, decl_exp.original_type, | |
11661 | NOP_EXPR, init_loc, init_exp.value, | |
11662 | init_exp.original_type); | |
11663 | init = c_process_expr_stmt (init_loc, init); | |
11664 | ||
11665 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11666 | } | |
11667 | else | |
11668 | { | |
11669 | error_init: | |
11670 | c_parser_error (parser, | |
11671 | "expected iteration declaration or initialization"); | |
11672 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
11673 | "expected %<)%>"); | |
11674 | fail = true; | |
11675 | goto parse_next; | |
11676 | } | |
11677 | ||
11678 | /* Parse the loop condition. */ | |
11679 | cond = NULL_TREE; | |
11680 | if (c_parser_next_token_is_not (parser, CPP_SEMICOLON)) | |
11681 | { | |
11682 | location_t cond_loc = c_parser_peek_token (parser)->location; | |
11683 | struct c_expr cond_expr | |
11684 | = c_parser_binary_expression (parser, NULL, NULL_TREE); | |
11685 | ||
11686 | cond = cond_expr.value; | |
11687 | cond = c_objc_common_truthvalue_conversion (cond_loc, cond); | |
11688 | cond = c_fully_fold (cond, false, NULL); | |
11689 | switch (cond_expr.original_code) | |
11690 | { | |
11691 | case GT_EXPR: | |
11692 | case GE_EXPR: | |
11693 | case LT_EXPR: | |
11694 | case LE_EXPR: | |
11695 | break; | |
c02065fc AH |
11696 | case NE_EXPR: |
11697 | if (code == CILK_SIMD) | |
11698 | break; | |
11699 | /* FALLTHRU. */ | |
acf0174b JJ |
11700 | default: |
11701 | /* Can't be cond = error_mark_node, because we want to preserve | |
11702 | the location until c_finish_omp_for. */ | |
11703 | cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node); | |
11704 | break; | |
11705 | } | |
11706 | protected_set_expr_location (cond, cond_loc); | |
11707 | } | |
11708 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11709 | ||
11710 | /* Parse the increment expression. */ | |
11711 | incr = NULL_TREE; | |
11712 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN)) | |
11713 | { | |
11714 | location_t incr_loc = c_parser_peek_token (parser)->location; | |
11715 | ||
11716 | incr = c_process_expr_stmt (incr_loc, | |
11717 | c_parser_expression (parser).value); | |
11718 | } | |
11719 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11720 | ||
11721 | if (decl == NULL || decl == error_mark_node || init == error_mark_node) | |
11722 | fail = true; | |
11723 | else | |
11724 | { | |
11725 | TREE_VEC_ELT (declv, i) = decl; | |
11726 | TREE_VEC_ELT (initv, i) = init; | |
11727 | TREE_VEC_ELT (condv, i) = cond; | |
11728 | TREE_VEC_ELT (incrv, i) = incr; | |
11729 | } | |
11730 | ||
11731 | parse_next: | |
11732 | if (i == collapse - 1) | |
11733 | break; | |
11734 | ||
11735 | /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed | |
11736 | in between the collapsed for loops to be still considered perfectly | |
11737 | nested. Hopefully the final version clarifies this. | |
11738 | For now handle (multiple) {'s and empty statements. */ | |
11739 | do | |
11740 | { | |
11741 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
11742 | { | |
11743 | c_parser_consume_token (parser); | |
11744 | break; | |
11745 | } | |
11746 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
11747 | { | |
11748 | c_parser_consume_token (parser); | |
11749 | bracecount++; | |
11750 | } | |
11751 | else if (bracecount | |
11752 | && c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
11753 | c_parser_consume_token (parser); | |
11754 | else | |
11755 | { | |
11756 | c_parser_error (parser, "not enough perfectly nested loops"); | |
11757 | if (bracecount) | |
11758 | { | |
11759 | open_brace_parsed = true; | |
11760 | bracecount--; | |
11761 | } | |
11762 | fail = true; | |
11763 | collapse = 0; | |
11764 | break; | |
11765 | } | |
11766 | } | |
11767 | while (1); | |
11768 | ||
11769 | nbraces += bracecount; | |
11770 | } | |
11771 | ||
11772 | save_break = c_break_label; | |
c02065fc AH |
11773 | if (code == CILK_SIMD) |
11774 | c_break_label = build_int_cst (size_type_node, 2); | |
11775 | else | |
11776 | c_break_label = size_one_node; | |
acf0174b JJ |
11777 | save_cont = c_cont_label; |
11778 | c_cont_label = NULL_TREE; | |
11779 | body = push_stmt_list (); | |
11780 | ||
11781 | if (open_brace_parsed) | |
11782 | { | |
11783 | location_t here = c_parser_peek_token (parser)->location; | |
11784 | stmt = c_begin_compound_stmt (true); | |
11785 | c_parser_compound_statement_nostart (parser); | |
11786 | add_stmt (c_end_compound_stmt (here, stmt, true)); | |
11787 | } | |
11788 | else | |
11789 | add_stmt (c_parser_c99_block_statement (parser)); | |
11790 | if (c_cont_label) | |
11791 | { | |
11792 | tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label); | |
11793 | SET_EXPR_LOCATION (t, loc); | |
11794 | add_stmt (t); | |
11795 | } | |
11796 | ||
11797 | body = pop_stmt_list (body); | |
11798 | c_break_label = save_break; | |
11799 | c_cont_label = save_cont; | |
11800 | ||
11801 | while (nbraces) | |
11802 | { | |
11803 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
11804 | { | |
11805 | c_parser_consume_token (parser); | |
11806 | nbraces--; | |
11807 | } | |
11808 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
11809 | c_parser_consume_token (parser); | |
11810 | else | |
11811 | { | |
11812 | c_parser_error (parser, "collapsed loops not perfectly nested"); | |
11813 | while (nbraces) | |
11814 | { | |
11815 | location_t here = c_parser_peek_token (parser)->location; | |
11816 | stmt = c_begin_compound_stmt (true); | |
11817 | add_stmt (body); | |
11818 | c_parser_compound_statement_nostart (parser); | |
11819 | body = c_end_compound_stmt (here, stmt, true); | |
11820 | nbraces--; | |
11821 | } | |
11822 | goto pop_scopes; | |
11823 | } | |
11824 | } | |
11825 | ||
11826 | /* Only bother calling c_finish_omp_for if we haven't already generated | |
11827 | an error from the initialization parsing. */ | |
11828 | if (!fail) | |
11829 | { | |
11830 | stmt = c_finish_omp_for (loc, code, declv, initv, condv, | |
11831 | incrv, body, NULL); | |
11832 | if (stmt) | |
11833 | { | |
11834 | if (cclauses != NULL | |
11835 | && cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL] != NULL) | |
11836 | { | |
11837 | tree *c; | |
11838 | for (c = &cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL]; *c ; ) | |
11839 | if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE | |
11840 | && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE) | |
11841 | c = &OMP_CLAUSE_CHAIN (*c); | |
11842 | else | |
11843 | { | |
11844 | for (i = 0; i < collapse; i++) | |
11845 | if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c)) | |
11846 | break; | |
11847 | if (i == collapse) | |
11848 | c = &OMP_CLAUSE_CHAIN (*c); | |
11849 | else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE) | |
11850 | { | |
11851 | error_at (loc, | |
11852 | "iteration variable %qD should not be firstprivate", | |
11853 | OMP_CLAUSE_DECL (*c)); | |
11854 | *c = OMP_CLAUSE_CHAIN (*c); | |
11855 | } | |
11856 | else | |
11857 | { | |
11858 | /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES, | |
11859 | change it to shared (decl) in | |
11860 | OMP_PARALLEL_CLAUSES. */ | |
11861 | tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c), | |
11862 | OMP_CLAUSE_LASTPRIVATE); | |
11863 | OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c); | |
11864 | OMP_CLAUSE_CHAIN (l) = clauses; | |
11865 | clauses = l; | |
11866 | OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED); | |
11867 | } | |
11868 | } | |
11869 | } | |
11870 | OMP_FOR_CLAUSES (stmt) = clauses; | |
11871 | } | |
11872 | ret = stmt; | |
11873 | } | |
11874 | pop_scopes: | |
11875 | while (!for_block->is_empty ()) | |
11876 | { | |
11877 | /* FIXME diagnostics: LOC below should be the actual location of | |
11878 | this particular for block. We need to build a list of | |
11879 | locations to go along with FOR_BLOCK. */ | |
11880 | stmt = c_end_compound_stmt (loc, for_block->pop (), true); | |
11881 | add_stmt (stmt); | |
11882 | } | |
11883 | release_tree_vector (for_block); | |
11884 | return ret; | |
11885 | } | |
11886 | ||
11887 | /* Helper function for OpenMP parsing, split clauses and call | |
11888 | finish_omp_clauses on each of the set of clauses afterwards. */ | |
11889 | ||
11890 | static void | |
11891 | omp_split_clauses (location_t loc, enum tree_code code, | |
11892 | omp_clause_mask mask, tree clauses, tree *cclauses) | |
11893 | { | |
11894 | int i; | |
11895 | c_omp_split_clauses (loc, code, mask, clauses, cclauses); | |
11896 | for (i = 0; i < C_OMP_CLAUSE_SPLIT_COUNT; i++) | |
11897 | if (cclauses[i]) | |
11898 | cclauses[i] = c_finish_omp_clauses (cclauses[i]); | |
11899 | } | |
11900 | ||
11901 | /* OpenMP 4.0: | |
11902 | #pragma omp simd simd-clause[optseq] new-line | |
11903 | for-loop | |
11904 | ||
11905 | LOC is the location of the #pragma token. | |
11906 | */ | |
11907 | ||
11908 | #define OMP_SIMD_CLAUSE_MASK \ | |
11909 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SAFELEN) \ | |
11910 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \ | |
11911 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \ | |
11912 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
11913 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
11914 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
11915 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE)) | |
11916 | ||
11917 | static tree | |
11918 | c_parser_omp_simd (location_t loc, c_parser *parser, | |
11919 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
11920 | { | |
11921 | tree block, clauses, ret; | |
11922 | ||
11923 | strcat (p_name, " simd"); | |
11924 | mask |= OMP_SIMD_CLAUSE_MASK; | |
11925 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ORDERED); | |
11926 | ||
11927 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
11928 | if (cclauses) | |
11929 | { | |
11930 | omp_split_clauses (loc, OMP_SIMD, mask, clauses, cclauses); | |
11931 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_SIMD]; | |
11932 | } | |
11933 | ||
11934 | block = c_begin_compound_stmt (true); | |
11935 | ret = c_parser_omp_for_loop (loc, parser, OMP_SIMD, clauses, cclauses); | |
11936 | block = c_end_compound_stmt (loc, block, true); | |
11937 | add_stmt (block); | |
11938 | ||
11939 | return ret; | |
11940 | } | |
11941 | ||
11942 | /* OpenMP 2.5: | |
11943 | #pragma omp for for-clause[optseq] new-line | |
11944 | for-loop | |
11945 | ||
11946 | OpenMP 4.0: | |
11947 | #pragma omp for simd for-simd-clause[optseq] new-line | |
11948 | for-loop | |
11949 | ||
11950 | LOC is the location of the #pragma token. | |
11951 | */ | |
11952 | ||
11953 | #define OMP_FOR_CLAUSE_MASK \ | |
11954 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
11955 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
11956 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
11957 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
11958 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ORDERED) \ | |
11959 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SCHEDULE) \ | |
11960 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE) \ | |
11961 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
11962 | ||
11963 | static tree | |
11964 | c_parser_omp_for (location_t loc, c_parser *parser, | |
11965 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
11966 | { | |
11967 | tree block, clauses, ret; | |
11968 | ||
11969 | strcat (p_name, " for"); | |
11970 | mask |= OMP_FOR_CLAUSE_MASK; | |
11971 | if (cclauses) | |
11972 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT); | |
11973 | ||
11974 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
20906c66 | 11975 | { |
acf0174b JJ |
11976 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
11977 | ||
11978 | if (strcmp (p, "simd") == 0) | |
11979 | { | |
11980 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
11981 | if (cclauses == NULL) | |
11982 | cclauses = cclauses_buf; | |
11983 | ||
11984 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
11985 | if (!flag_openmp) /* flag_openmp_simd */ |
11986 | return c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
acf0174b JJ |
11987 | block = c_begin_compound_stmt (true); |
11988 | ret = c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
11989 | block = c_end_compound_stmt (loc, block, true); | |
11990 | if (ret == NULL_TREE) | |
11991 | return ret; | |
11992 | ret = make_node (OMP_FOR); | |
11993 | TREE_TYPE (ret) = void_type_node; | |
11994 | OMP_FOR_BODY (ret) = block; | |
11995 | OMP_FOR_CLAUSES (ret) = cclauses[C_OMP_CLAUSE_SPLIT_FOR]; | |
11996 | SET_EXPR_LOCATION (ret, loc); | |
11997 | add_stmt (ret); | |
11998 | return ret; | |
11999 | } | |
20906c66 | 12000 | } |
6d7f7e0a TB |
12001 | if (!flag_openmp) /* flag_openmp_simd */ |
12002 | { | |
12003 | c_parser_skip_to_pragma_eol (parser); | |
12004 | return NULL_TREE; | |
12005 | } | |
acf0174b JJ |
12006 | |
12007 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12008 | if (cclauses) | |
20906c66 | 12009 | { |
acf0174b JJ |
12010 | omp_split_clauses (loc, OMP_FOR, mask, clauses, cclauses); |
12011 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_FOR]; | |
20906c66 | 12012 | } |
20906c66 | 12013 | |
acf0174b JJ |
12014 | block = c_begin_compound_stmt (true); |
12015 | ret = c_parser_omp_for_loop (loc, parser, OMP_FOR, clauses, cclauses); | |
12016 | block = c_end_compound_stmt (loc, block, true); | |
12017 | add_stmt (block); | |
12018 | ||
12019 | return ret; | |
953ff289 DN |
12020 | } |
12021 | ||
acf0174b JJ |
12022 | /* OpenMP 2.5: |
12023 | # pragma omp master new-line | |
12024 | structured-block | |
12025 | ||
12026 | LOC is the location of the #pragma token. | |
12027 | */ | |
12028 | ||
12029 | static tree | |
12030 | c_parser_omp_master (location_t loc, c_parser *parser) | |
12031 | { | |
12032 | c_parser_skip_to_pragma_eol (parser); | |
12033 | return c_finish_omp_master (loc, c_parser_omp_structured_block (parser)); | |
12034 | } | |
953ff289 DN |
12035 | |
12036 | /* OpenMP 2.5: | |
acf0174b JJ |
12037 | # pragma omp ordered new-line |
12038 | structured-block | |
12039 | ||
12040 | LOC is the location of the #pragma itself. | |
953ff289 DN |
12041 | */ |
12042 | ||
acf0174b JJ |
12043 | static tree |
12044 | c_parser_omp_ordered (location_t loc, c_parser *parser) | |
953ff289 | 12045 | { |
953ff289 | 12046 | c_parser_skip_to_pragma_eol (parser); |
acf0174b JJ |
12047 | return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser)); |
12048 | } | |
953ff289 | 12049 | |
acf0174b JJ |
12050 | /* OpenMP 2.5: |
12051 | ||
12052 | section-scope: | |
12053 | { section-sequence } | |
12054 | ||
12055 | section-sequence: | |
12056 | section-directive[opt] structured-block | |
12057 | section-sequence section-directive structured-block | |
12058 | ||
12059 | SECTIONS_LOC is the location of the #pragma omp sections. */ | |
12060 | ||
12061 | static tree | |
12062 | c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser) | |
12063 | { | |
12064 | tree stmt, substmt; | |
12065 | bool error_suppress = false; | |
12066 | location_t loc; | |
12067 | ||
12068 | loc = c_parser_peek_token (parser)->location; | |
12069 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) | |
12070 | { | |
12071 | /* Avoid skipping until the end of the block. */ | |
12072 | parser->error = false; | |
12073 | return NULL_TREE; | |
12074 | } | |
12075 | ||
12076 | stmt = push_stmt_list (); | |
12077 | ||
12078 | if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION) | |
12079 | { | |
12080 | substmt = c_parser_omp_structured_block (parser); | |
12081 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
12082 | SET_EXPR_LOCATION (substmt, loc); | |
12083 | add_stmt (substmt); | |
12084 | } | |
12085 | ||
12086 | while (1) | |
12087 | { | |
12088 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
12089 | break; | |
12090 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
12091 | break; | |
12092 | ||
12093 | loc = c_parser_peek_token (parser)->location; | |
12094 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
12095 | { | |
12096 | c_parser_consume_pragma (parser); | |
12097 | c_parser_skip_to_pragma_eol (parser); | |
12098 | error_suppress = false; | |
12099 | } | |
12100 | else if (!error_suppress) | |
12101 | { | |
12102 | error_at (loc, "expected %<#pragma omp section%> or %<}%>"); | |
12103 | error_suppress = true; | |
12104 | } | |
12105 | ||
12106 | substmt = c_parser_omp_structured_block (parser); | |
12107 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
12108 | SET_EXPR_LOCATION (substmt, loc); | |
12109 | add_stmt (substmt); | |
12110 | } | |
12111 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, | |
12112 | "expected %<#pragma omp section%> or %<}%>"); | |
12113 | ||
12114 | substmt = pop_stmt_list (stmt); | |
12115 | ||
12116 | stmt = make_node (OMP_SECTIONS); | |
12117 | SET_EXPR_LOCATION (stmt, sections_loc); | |
12118 | TREE_TYPE (stmt) = void_type_node; | |
12119 | OMP_SECTIONS_BODY (stmt) = substmt; | |
12120 | ||
12121 | return add_stmt (stmt); | |
953ff289 DN |
12122 | } |
12123 | ||
12124 | /* OpenMP 2.5: | |
acf0174b JJ |
12125 | # pragma omp sections sections-clause[optseq] newline |
12126 | sections-scope | |
c2255bc4 | 12127 | |
acf0174b JJ |
12128 | LOC is the location of the #pragma token. |
12129 | */ | |
12130 | ||
12131 | #define OMP_SECTIONS_CLAUSE_MASK \ | |
12132 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12133 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12134 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
12135 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12136 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
953ff289 DN |
12137 | |
12138 | static tree | |
acf0174b JJ |
12139 | c_parser_omp_sections (location_t loc, c_parser *parser, |
12140 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12141 | { |
acf0174b | 12142 | tree block, clauses, ret; |
953ff289 | 12143 | |
acf0174b JJ |
12144 | strcat (p_name, " sections"); |
12145 | mask |= OMP_SECTIONS_CLAUSE_MASK; | |
12146 | if (cclauses) | |
12147 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT); | |
12148 | ||
12149 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12150 | if (cclauses) | |
12151 | { | |
12152 | omp_split_clauses (loc, OMP_SECTIONS, mask, clauses, cclauses); | |
12153 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_SECTIONS]; | |
12154 | } | |
12155 | ||
12156 | block = c_begin_compound_stmt (true); | |
12157 | ret = c_parser_omp_sections_scope (loc, parser); | |
12158 | if (ret) | |
12159 | OMP_SECTIONS_CLAUSES (ret) = clauses; | |
12160 | block = c_end_compound_stmt (loc, block, true); | |
12161 | add_stmt (block); | |
12162 | ||
12163 | return ret; | |
12164 | } | |
12165 | ||
12166 | /* OpenMP 2.5: | |
cef0fd0e TS |
12167 | # pragma omp parallel parallel-clause[optseq] new-line |
12168 | structured-block | |
12169 | # pragma omp parallel for parallel-for-clause[optseq] new-line | |
12170 | structured-block | |
12171 | # pragma omp parallel sections parallel-sections-clause[optseq] new-line | |
12172 | structured-block | |
12173 | ||
12174 | OpenMP 4.0: | |
12175 | # pragma omp parallel for simd parallel-for-simd-clause[optseq] new-line | |
12176 | structured-block | |
acf0174b JJ |
12177 | |
12178 | LOC is the location of the #pragma token. | |
12179 | */ | |
12180 | ||
12181 | #define OMP_PARALLEL_CLAUSE_MASK \ | |
12182 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \ | |
12183 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12184 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12185 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
12186 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12187 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYIN) \ | |
12188 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12189 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_THREADS) \ | |
12190 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PROC_BIND)) | |
12191 | ||
12192 | static tree | |
12193 | c_parser_omp_parallel (location_t loc, c_parser *parser, | |
12194 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
12195 | { | |
12196 | tree stmt, clauses, block; | |
12197 | ||
12198 | strcat (p_name, " parallel"); | |
12199 | mask |= OMP_PARALLEL_CLAUSE_MASK; | |
12200 | ||
12201 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
953ff289 | 12202 | { |
acf0174b JJ |
12203 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; |
12204 | if (cclauses == NULL) | |
12205 | cclauses = cclauses_buf; | |
12206 | ||
953ff289 | 12207 | c_parser_consume_token (parser); |
6d7f7e0a TB |
12208 | if (!flag_openmp) /* flag_openmp_simd */ |
12209 | return c_parser_omp_for (loc, parser, p_name, mask, cclauses); | |
acf0174b JJ |
12210 | block = c_begin_omp_parallel (); |
12211 | c_parser_omp_for (loc, parser, p_name, mask, cclauses); | |
12212 | stmt | |
12213 | = c_finish_omp_parallel (loc, cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL], | |
12214 | block); | |
12215 | OMP_PARALLEL_COMBINED (stmt) = 1; | |
12216 | return stmt; | |
12217 | } | |
12218 | else if (cclauses) | |
12219 | { | |
12220 | error_at (loc, "expected %<for%> after %qs", p_name); | |
12221 | c_parser_skip_to_pragma_eol (parser); | |
12222 | return NULL_TREE; | |
12223 | } | |
6d7f7e0a TB |
12224 | else if (!flag_openmp) /* flag_openmp_simd */ |
12225 | { | |
12226 | c_parser_skip_to_pragma_eol (parser); | |
12227 | return NULL_TREE; | |
12228 | } | |
acf0174b JJ |
12229 | else if (c_parser_next_token_is (parser, CPP_NAME)) |
12230 | { | |
12231 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12232 | if (strcmp (p, "sections") == 0) | |
953ff289 | 12233 | { |
acf0174b JJ |
12234 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; |
12235 | if (cclauses == NULL) | |
12236 | cclauses = cclauses_buf; | |
12237 | ||
953ff289 | 12238 | c_parser_consume_token (parser); |
acf0174b JJ |
12239 | block = c_begin_omp_parallel (); |
12240 | c_parser_omp_sections (loc, parser, p_name, mask, cclauses); | |
12241 | stmt = c_finish_omp_parallel (loc, | |
12242 | cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL], | |
12243 | block); | |
12244 | OMP_PARALLEL_COMBINED (stmt) = 1; | |
12245 | return stmt; | |
953ff289 | 12246 | } |
953ff289 | 12247 | } |
953ff289 | 12248 | |
acf0174b JJ |
12249 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); |
12250 | ||
12251 | block = c_begin_omp_parallel (); | |
12252 | c_parser_statement (parser); | |
12253 | stmt = c_finish_omp_parallel (loc, clauses, block); | |
12254 | ||
12255 | return stmt; | |
12256 | } | |
12257 | ||
12258 | /* OpenMP 2.5: | |
12259 | # pragma omp single single-clause[optseq] new-line | |
12260 | structured-block | |
12261 | ||
12262 | LOC is the location of the #pragma. | |
12263 | */ | |
12264 | ||
12265 | #define OMP_SINGLE_CLAUSE_MASK \ | |
12266 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12267 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12268 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \ | |
12269 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
12270 | ||
12271 | static tree | |
12272 | c_parser_omp_single (location_t loc, c_parser *parser) | |
12273 | { | |
12274 | tree stmt = make_node (OMP_SINGLE); | |
12275 | SET_EXPR_LOCATION (stmt, loc); | |
12276 | TREE_TYPE (stmt) = void_type_node; | |
12277 | ||
12278 | OMP_SINGLE_CLAUSES (stmt) | |
12279 | = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK, | |
12280 | "#pragma omp single"); | |
12281 | OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser); | |
12282 | ||
12283 | return add_stmt (stmt); | |
12284 | } | |
12285 | ||
12286 | /* OpenMP 3.0: | |
12287 | # pragma omp task task-clause[optseq] new-line | |
12288 | ||
12289 | LOC is the location of the #pragma. | |
12290 | */ | |
12291 | ||
12292 | #define OMP_TASK_CLAUSE_MASK \ | |
12293 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \ | |
12294 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNTIED) \ | |
12295 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
12296 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12297 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12298 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12299 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FINAL) \ | |
12300 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MERGEABLE) \ | |
12301 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEPEND)) | |
12302 | ||
12303 | static tree | |
12304 | c_parser_omp_task (location_t loc, c_parser *parser) | |
12305 | { | |
12306 | tree clauses, block; | |
12307 | ||
12308 | clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK, | |
12309 | "#pragma omp task"); | |
12310 | ||
12311 | block = c_begin_omp_task (); | |
12312 | c_parser_statement (parser); | |
12313 | return c_finish_omp_task (loc, clauses, block); | |
953ff289 DN |
12314 | } |
12315 | ||
acf0174b JJ |
12316 | /* OpenMP 3.0: |
12317 | # pragma omp taskwait new-line | |
12318 | */ | |
953ff289 DN |
12319 | |
12320 | static void | |
acf0174b | 12321 | c_parser_omp_taskwait (c_parser *parser) |
953ff289 | 12322 | { |
c2255bc4 | 12323 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 | 12324 | c_parser_consume_pragma (parser); |
953ff289 DN |
12325 | c_parser_skip_to_pragma_eol (parser); |
12326 | ||
acf0174b | 12327 | c_finish_omp_taskwait (loc); |
953ff289 DN |
12328 | } |
12329 | ||
acf0174b JJ |
12330 | /* OpenMP 3.1: |
12331 | # pragma omp taskyield new-line | |
12332 | */ | |
953ff289 | 12333 | |
acf0174b JJ |
12334 | static void |
12335 | c_parser_omp_taskyield (c_parser *parser) | |
953ff289 | 12336 | { |
acf0174b JJ |
12337 | location_t loc = c_parser_peek_token (parser)->location; |
12338 | c_parser_consume_pragma (parser); | |
12339 | c_parser_skip_to_pragma_eol (parser); | |
a68ab351 | 12340 | |
acf0174b JJ |
12341 | c_finish_omp_taskyield (loc); |
12342 | } | |
3ba09659 | 12343 | |
acf0174b JJ |
12344 | /* OpenMP 4.0: |
12345 | # pragma omp taskgroup new-line | |
12346 | */ | |
953ff289 | 12347 | |
acf0174b JJ |
12348 | static tree |
12349 | c_parser_omp_taskgroup (c_parser *parser) | |
12350 | { | |
12351 | location_t loc = c_parser_peek_token (parser)->location; | |
12352 | c_parser_skip_to_pragma_eol (parser); | |
12353 | return c_finish_omp_taskgroup (loc, c_parser_omp_structured_block (parser)); | |
12354 | } | |
c9f9eb5d | 12355 | |
acf0174b JJ |
12356 | /* OpenMP 4.0: |
12357 | # pragma omp cancel cancel-clause[optseq] new-line | |
953ff289 | 12358 | |
acf0174b JJ |
12359 | LOC is the location of the #pragma. |
12360 | */ | |
a68ab351 | 12361 | |
acf0174b JJ |
12362 | #define OMP_CANCEL_CLAUSE_MASK \ |
12363 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \ | |
12364 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \ | |
12365 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \ | |
12366 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP) \ | |
12367 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
a68ab351 | 12368 | |
acf0174b JJ |
12369 | static void |
12370 | c_parser_omp_cancel (c_parser *parser) | |
12371 | { | |
12372 | location_t loc = c_parser_peek_token (parser)->location; | |
a68ab351 | 12373 | |
acf0174b JJ |
12374 | c_parser_consume_pragma (parser); |
12375 | tree clauses = c_parser_omp_all_clauses (parser, OMP_CANCEL_CLAUSE_MASK, | |
12376 | "#pragma omp cancel"); | |
953ff289 | 12377 | |
acf0174b JJ |
12378 | c_finish_omp_cancel (loc, clauses); |
12379 | } | |
953ff289 | 12380 | |
acf0174b JJ |
12381 | /* OpenMP 4.0: |
12382 | # pragma omp cancellation point cancelpt-clause[optseq] new-line | |
953ff289 | 12383 | |
acf0174b JJ |
12384 | LOC is the location of the #pragma. |
12385 | */ | |
953ff289 | 12386 | |
acf0174b JJ |
12387 | #define OMP_CANCELLATION_POINT_CLAUSE_MASK \ |
12388 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \ | |
12389 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \ | |
12390 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \ | |
12391 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP)) | |
a68ab351 | 12392 | |
acf0174b JJ |
12393 | static void |
12394 | c_parser_omp_cancellation_point (c_parser *parser) | |
12395 | { | |
12396 | location_t loc = c_parser_peek_token (parser)->location; | |
12397 | tree clauses; | |
12398 | bool point_seen = false; | |
12399 | ||
12400 | c_parser_consume_pragma (parser); | |
12401 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
a68ab351 | 12402 | { |
acf0174b JJ |
12403 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
12404 | if (strcmp (p, "point") == 0) | |
a68ab351 | 12405 | { |
acf0174b JJ |
12406 | c_parser_consume_token (parser); |
12407 | point_seen = true; | |
a68ab351 | 12408 | } |
a68ab351 | 12409 | } |
acf0174b | 12410 | if (!point_seen) |
a68ab351 | 12411 | { |
acf0174b JJ |
12412 | c_parser_error (parser, "expected %<point%>"); |
12413 | c_parser_skip_to_pragma_eol (parser); | |
12414 | return; | |
a68ab351 | 12415 | } |
953ff289 | 12416 | |
acf0174b JJ |
12417 | clauses |
12418 | = c_parser_omp_all_clauses (parser, OMP_CANCELLATION_POINT_CLAUSE_MASK, | |
12419 | "#pragma omp cancellation point"); | |
c2255bc4 | 12420 | |
acf0174b JJ |
12421 | c_finish_omp_cancellation_point (loc, clauses); |
12422 | } | |
953ff289 | 12423 | |
acf0174b JJ |
12424 | /* OpenMP 4.0: |
12425 | #pragma omp distribute distribute-clause[optseq] new-line | |
12426 | for-loop */ | |
12427 | ||
12428 | #define OMP_DISTRIBUTE_CLAUSE_MASK \ | |
12429 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12430 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12431 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DIST_SCHEDULE)\ | |
12432 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE)) | |
953ff289 DN |
12433 | |
12434 | static tree | |
acf0174b JJ |
12435 | c_parser_omp_distribute (location_t loc, c_parser *parser, |
12436 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12437 | { |
acf0174b JJ |
12438 | tree clauses, block, ret; |
12439 | ||
12440 | strcat (p_name, " distribute"); | |
12441 | mask |= OMP_DISTRIBUTE_CLAUSE_MASK; | |
12442 | ||
12443 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
12444 | { | |
12445 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12446 | bool simd = false; | |
12447 | bool parallel = false; | |
12448 | ||
12449 | if (strcmp (p, "simd") == 0) | |
12450 | simd = true; | |
12451 | else | |
12452 | parallel = strcmp (p, "parallel") == 0; | |
12453 | if (parallel || simd) | |
12454 | { | |
12455 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12456 | if (cclauses == NULL) | |
12457 | cclauses = cclauses_buf; | |
12458 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
12459 | if (!flag_openmp) /* flag_openmp_simd */ |
12460 | { | |
12461 | if (simd) | |
12462 | return c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
12463 | else | |
12464 | return c_parser_omp_parallel (loc, parser, p_name, mask, | |
12465 | cclauses); | |
12466 | } | |
acf0174b JJ |
12467 | block = c_begin_compound_stmt (true); |
12468 | if (simd) | |
12469 | ret = c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
12470 | else | |
12471 | ret = c_parser_omp_parallel (loc, parser, p_name, mask, cclauses); | |
12472 | block = c_end_compound_stmt (loc, block, true); | |
12473 | if (ret == NULL) | |
12474 | return ret; | |
12475 | ret = make_node (OMP_DISTRIBUTE); | |
12476 | TREE_TYPE (ret) = void_type_node; | |
12477 | OMP_FOR_BODY (ret) = block; | |
12478 | OMP_FOR_CLAUSES (ret) = cclauses[C_OMP_CLAUSE_SPLIT_DISTRIBUTE]; | |
12479 | SET_EXPR_LOCATION (ret, loc); | |
12480 | add_stmt (ret); | |
12481 | return ret; | |
12482 | } | |
12483 | } | |
6d7f7e0a TB |
12484 | if (!flag_openmp) /* flag_openmp_simd */ |
12485 | { | |
12486 | c_parser_skip_to_pragma_eol (parser); | |
12487 | return NULL_TREE; | |
12488 | } | |
953ff289 | 12489 | |
acf0174b JJ |
12490 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); |
12491 | if (cclauses) | |
12492 | { | |
12493 | omp_split_clauses (loc, OMP_DISTRIBUTE, mask, clauses, cclauses); | |
12494 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_DISTRIBUTE]; | |
12495 | } | |
953ff289 DN |
12496 | |
12497 | block = c_begin_compound_stmt (true); | |
acf0174b | 12498 | ret = c_parser_omp_for_loop (loc, parser, OMP_DISTRIBUTE, clauses, NULL); |
c2255bc4 | 12499 | block = c_end_compound_stmt (loc, block, true); |
953ff289 DN |
12500 | add_stmt (block); |
12501 | ||
12502 | return ret; | |
12503 | } | |
12504 | ||
acf0174b JJ |
12505 | /* OpenMP 4.0: |
12506 | # pragma omp teams teams-clause[optseq] new-line | |
12507 | structured-block */ | |
c2255bc4 | 12508 | |
acf0174b JJ |
12509 | #define OMP_TEAMS_CLAUSE_MASK \ |
12510 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12511 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12512 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12513 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12514 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_TEAMS) \ | |
12515 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_THREAD_LIMIT) \ | |
12516 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT)) | |
953ff289 DN |
12517 | |
12518 | static tree | |
acf0174b JJ |
12519 | c_parser_omp_teams (location_t loc, c_parser *parser, |
12520 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12521 | { |
acf0174b JJ |
12522 | tree clauses, block, ret; |
12523 | ||
12524 | strcat (p_name, " teams"); | |
12525 | mask |= OMP_TEAMS_CLAUSE_MASK; | |
12526 | ||
12527 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
12528 | { | |
12529 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12530 | if (strcmp (p, "distribute") == 0) | |
12531 | { | |
12532 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12533 | if (cclauses == NULL) | |
12534 | cclauses = cclauses_buf; | |
12535 | ||
12536 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
12537 | if (!flag_openmp) /* flag_openmp_simd */ |
12538 | return c_parser_omp_distribute (loc, parser, p_name, mask, cclauses); | |
acf0174b JJ |
12539 | block = c_begin_compound_stmt (true); |
12540 | ret = c_parser_omp_distribute (loc, parser, p_name, mask, cclauses); | |
12541 | block = c_end_compound_stmt (loc, block, true); | |
12542 | if (ret == NULL) | |
12543 | return ret; | |
12544 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_TEAMS]; | |
12545 | ret = make_node (OMP_TEAMS); | |
12546 | TREE_TYPE (ret) = void_type_node; | |
12547 | OMP_TEAMS_CLAUSES (ret) = clauses; | |
12548 | OMP_TEAMS_BODY (ret) = block; | |
12549 | return add_stmt (ret); | |
12550 | } | |
12551 | } | |
6d7f7e0a TB |
12552 | if (!flag_openmp) /* flag_openmp_simd */ |
12553 | { | |
12554 | c_parser_skip_to_pragma_eol (parser); | |
12555 | return NULL_TREE; | |
12556 | } | |
acf0174b JJ |
12557 | |
12558 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12559 | if (cclauses) | |
12560 | { | |
12561 | omp_split_clauses (loc, OMP_TEAMS, mask, clauses, cclauses); | |
12562 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_TEAMS]; | |
12563 | } | |
12564 | ||
12565 | tree stmt = make_node (OMP_TEAMS); | |
12566 | TREE_TYPE (stmt) = void_type_node; | |
12567 | OMP_TEAMS_CLAUSES (stmt) = clauses; | |
12568 | OMP_TEAMS_BODY (stmt) = c_parser_omp_structured_block (parser); | |
12569 | ||
12570 | return add_stmt (stmt); | |
953ff289 DN |
12571 | } |
12572 | ||
acf0174b JJ |
12573 | /* OpenMP 4.0: |
12574 | # pragma omp target data target-data-clause[optseq] new-line | |
12575 | structured-block */ | |
c2255bc4 | 12576 | |
acf0174b JJ |
12577 | #define OMP_TARGET_DATA_CLAUSE_MASK \ |
12578 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12579 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \ | |
12580 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 DN |
12581 | |
12582 | static tree | |
acf0174b | 12583 | c_parser_omp_target_data (location_t loc, c_parser *parser) |
953ff289 | 12584 | { |
acf0174b JJ |
12585 | tree stmt = make_node (OMP_TARGET_DATA); |
12586 | TREE_TYPE (stmt) = void_type_node; | |
953ff289 | 12587 | |
acf0174b JJ |
12588 | OMP_TARGET_DATA_CLAUSES (stmt) |
12589 | = c_parser_omp_all_clauses (parser, OMP_TARGET_DATA_CLAUSE_MASK, | |
12590 | "#pragma omp target data"); | |
12591 | keep_next_level (); | |
12592 | tree block = c_begin_compound_stmt (true); | |
12593 | add_stmt (c_parser_omp_structured_block (parser)); | |
12594 | OMP_TARGET_DATA_BODY (stmt) = c_end_compound_stmt (loc, block, true); | |
953ff289 | 12595 | |
acf0174b JJ |
12596 | SET_EXPR_LOCATION (stmt, loc); |
12597 | return add_stmt (stmt); | |
12598 | } | |
953ff289 | 12599 | |
acf0174b JJ |
12600 | /* OpenMP 4.0: |
12601 | # pragma omp target update target-update-clause[optseq] new-line */ | |
c2255bc4 | 12602 | |
acf0174b JJ |
12603 | #define OMP_TARGET_UPDATE_CLAUSE_MASK \ |
12604 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FROM) \ | |
12605 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TO) \ | |
12606 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12607 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 | 12608 | |
acf0174b JJ |
12609 | static bool |
12610 | c_parser_omp_target_update (location_t loc, c_parser *parser, | |
12611 | enum pragma_context context) | |
953ff289 | 12612 | { |
acf0174b JJ |
12613 | if (context == pragma_stmt) |
12614 | { | |
12615 | error_at (loc, | |
12616 | "%<#pragma omp target update%> may only be " | |
12617 | "used in compound statements"); | |
12618 | c_parser_skip_to_pragma_eol (parser); | |
12619 | return false; | |
12620 | } | |
953ff289 | 12621 | |
acf0174b JJ |
12622 | tree clauses |
12623 | = c_parser_omp_all_clauses (parser, OMP_TARGET_UPDATE_CLAUSE_MASK, | |
12624 | "#pragma omp target update"); | |
12625 | if (find_omp_clause (clauses, OMP_CLAUSE_TO) == NULL_TREE | |
12626 | && find_omp_clause (clauses, OMP_CLAUSE_FROM) == NULL_TREE) | |
953ff289 | 12627 | { |
acf0174b JJ |
12628 | error_at (loc, |
12629 | "%<#pragma omp target update must contain at least one " | |
12630 | "%<from%> or %<to%> clauses"); | |
12631 | return false; | |
953ff289 DN |
12632 | } |
12633 | ||
acf0174b JJ |
12634 | tree stmt = make_node (OMP_TARGET_UPDATE); |
12635 | TREE_TYPE (stmt) = void_type_node; | |
12636 | OMP_TARGET_UPDATE_CLAUSES (stmt) = clauses; | |
12637 | SET_EXPR_LOCATION (stmt, loc); | |
12638 | add_stmt (stmt); | |
12639 | return false; | |
12640 | } | |
953ff289 | 12641 | |
acf0174b JJ |
12642 | /* OpenMP 4.0: |
12643 | # pragma omp target target-clause[optseq] new-line | |
12644 | structured-block */ | |
953ff289 | 12645 | |
acf0174b JJ |
12646 | #define OMP_TARGET_CLAUSE_MASK \ |
12647 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12648 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \ | |
12649 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 | 12650 | |
acf0174b JJ |
12651 | static bool |
12652 | c_parser_omp_target (c_parser *parser, enum pragma_context context) | |
12653 | { | |
12654 | location_t loc = c_parser_peek_token (parser)->location; | |
12655 | c_parser_consume_pragma (parser); | |
953ff289 | 12656 | |
acf0174b JJ |
12657 | if (context != pragma_stmt && context != pragma_compound) |
12658 | { | |
12659 | c_parser_error (parser, "expected declaration specifiers"); | |
12660 | c_parser_skip_to_pragma_eol (parser); | |
12661 | return false; | |
953ff289 DN |
12662 | } |
12663 | ||
acf0174b | 12664 | if (c_parser_next_token_is (parser, CPP_NAME)) |
953ff289 | 12665 | { |
acf0174b | 12666 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
953ff289 | 12667 | |
6d7f7e0a | 12668 | if (strcmp (p, "teams") == 0) |
acf0174b JJ |
12669 | { |
12670 | tree cclauses[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12671 | char p_name[sizeof ("#pragma omp target teams distribute " | |
12672 | "parallel for simd")]; | |
953ff289 | 12673 | |
acf0174b | 12674 | c_parser_consume_token (parser); |
e7bd1de1 | 12675 | strcpy (p_name, "#pragma omp target"); |
6d7f7e0a TB |
12676 | if (!flag_openmp) /* flag_openmp_simd */ |
12677 | return c_parser_omp_teams (loc, parser, p_name, | |
12678 | OMP_TARGET_CLAUSE_MASK, cclauses); | |
acf0174b JJ |
12679 | keep_next_level (); |
12680 | tree block = c_begin_compound_stmt (true); | |
12681 | tree ret = c_parser_omp_teams (loc, parser, p_name, | |
12682 | OMP_TARGET_CLAUSE_MASK, cclauses); | |
12683 | block = c_end_compound_stmt (loc, block, true); | |
12684 | if (ret == NULL) | |
12685 | return ret; | |
12686 | tree stmt = make_node (OMP_TARGET); | |
12687 | TREE_TYPE (stmt) = void_type_node; | |
12688 | OMP_TARGET_CLAUSES (stmt) = cclauses[C_OMP_CLAUSE_SPLIT_TARGET]; | |
12689 | OMP_TARGET_BODY (stmt) = block; | |
12690 | add_stmt (stmt); | |
12691 | return true; | |
12692 | } | |
6d7f7e0a TB |
12693 | else if (!flag_openmp) /* flag_openmp_simd */ |
12694 | { | |
12695 | c_parser_skip_to_pragma_eol (parser); | |
12696 | return NULL_TREE; | |
12697 | } | |
12698 | else if (strcmp (p, "data") == 0) | |
12699 | { | |
12700 | c_parser_consume_token (parser); | |
12701 | c_parser_omp_target_data (loc, parser); | |
12702 | return true; | |
12703 | } | |
12704 | else if (strcmp (p, "update") == 0) | |
12705 | { | |
12706 | c_parser_consume_token (parser); | |
12707 | return c_parser_omp_target_update (loc, parser, context); | |
12708 | } | |
953ff289 | 12709 | } |
953ff289 | 12710 | |
acf0174b | 12711 | tree stmt = make_node (OMP_TARGET); |
953ff289 | 12712 | TREE_TYPE (stmt) = void_type_node; |
953ff289 | 12713 | |
acf0174b JJ |
12714 | OMP_TARGET_CLAUSES (stmt) |
12715 | = c_parser_omp_all_clauses (parser, OMP_TARGET_CLAUSE_MASK, | |
12716 | "#pragma omp target"); | |
12717 | keep_next_level (); | |
12718 | tree block = c_begin_compound_stmt (true); | |
12719 | add_stmt (c_parser_omp_structured_block (parser)); | |
12720 | OMP_TARGET_BODY (stmt) = c_end_compound_stmt (loc, block, true); | |
12721 | ||
12722 | SET_EXPR_LOCATION (stmt, loc); | |
12723 | add_stmt (stmt); | |
12724 | return true; | |
12725 | } | |
12726 | ||
12727 | /* OpenMP 4.0: | |
12728 | # pragma omp declare simd declare-simd-clauses[optseq] new-line */ | |
12729 | ||
12730 | #define OMP_DECLARE_SIMD_CLAUSE_MASK \ | |
12731 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SIMDLEN) \ | |
12732 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \ | |
12733 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \ | |
12734 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNIFORM) \ | |
12735 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_INBRANCH) \ | |
12736 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOTINBRANCH)) | |
12737 | ||
12738 | static void | |
12739 | c_parser_omp_declare_simd (c_parser *parser, enum pragma_context context) | |
12740 | { | |
12741 | vec<c_token> clauses = vNULL; | |
12742 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
12743 | { | |
12744 | c_token *token = c_parser_peek_token (parser); | |
12745 | if (token->type == CPP_EOF) | |
12746 | { | |
12747 | c_parser_skip_to_pragma_eol (parser); | |
12748 | clauses.release (); | |
12749 | return; | |
12750 | } | |
12751 | clauses.safe_push (*token); | |
12752 | c_parser_consume_token (parser); | |
12753 | } | |
12754 | clauses.safe_push (*c_parser_peek_token (parser)); | |
12755 | c_parser_skip_to_pragma_eol (parser); | |
12756 | ||
12757 | while (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
12758 | { | |
12759 | if (c_parser_peek_token (parser)->pragma_kind | |
12760 | != PRAGMA_OMP_DECLARE_REDUCTION | |
12761 | || c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
12762 | || strcmp (IDENTIFIER_POINTER | |
12763 | (c_parser_peek_2nd_token (parser)->value), | |
12764 | "simd") != 0) | |
12765 | { | |
12766 | c_parser_error (parser, | |
12767 | "%<#pragma omp declare simd%> must be followed by " | |
12768 | "function declaration or definition or another " | |
12769 | "%<#pragma omp declare simd%>"); | |
12770 | clauses.release (); | |
12771 | return; | |
12772 | } | |
12773 | c_parser_consume_pragma (parser); | |
12774 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
12775 | { | |
12776 | c_token *token = c_parser_peek_token (parser); | |
12777 | if (token->type == CPP_EOF) | |
12778 | { | |
12779 | c_parser_skip_to_pragma_eol (parser); | |
12780 | clauses.release (); | |
12781 | return; | |
12782 | } | |
12783 | clauses.safe_push (*token); | |
12784 | c_parser_consume_token (parser); | |
12785 | } | |
12786 | clauses.safe_push (*c_parser_peek_token (parser)); | |
12787 | c_parser_skip_to_pragma_eol (parser); | |
12788 | } | |
12789 | ||
12790 | /* Make sure nothing tries to read past the end of the tokens. */ | |
12791 | c_token eof_token; | |
12792 | memset (&eof_token, 0, sizeof (eof_token)); | |
12793 | eof_token.type = CPP_EOF; | |
12794 | clauses.safe_push (eof_token); | |
12795 | clauses.safe_push (eof_token); | |
12796 | ||
12797 | switch (context) | |
12798 | { | |
12799 | case pragma_external: | |
12800 | if (c_parser_next_token_is (parser, CPP_KEYWORD) | |
12801 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION) | |
12802 | { | |
12803 | int ext = disable_extension_diagnostics (); | |
12804 | do | |
12805 | c_parser_consume_token (parser); | |
12806 | while (c_parser_next_token_is (parser, CPP_KEYWORD) | |
12807 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION); | |
12808 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, | |
12809 | NULL, clauses); | |
12810 | restore_extension_diagnostics (ext); | |
12811 | } | |
12812 | else | |
12813 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, | |
12814 | NULL, clauses); | |
12815 | break; | |
12816 | case pragma_struct: | |
12817 | case pragma_param: | |
12818 | c_parser_error (parser, "%<#pragma omp declare simd%> must be followed by " | |
12819 | "function declaration or definition"); | |
12820 | break; | |
12821 | case pragma_compound: | |
12822 | case pragma_stmt: | |
12823 | if (c_parser_next_token_is (parser, CPP_KEYWORD) | |
12824 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION) | |
12825 | { | |
12826 | int ext = disable_extension_diagnostics (); | |
12827 | do | |
12828 | c_parser_consume_token (parser); | |
12829 | while (c_parser_next_token_is (parser, CPP_KEYWORD) | |
12830 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION); | |
12831 | if (c_parser_next_tokens_start_declaration (parser)) | |
12832 | { | |
12833 | c_parser_declaration_or_fndef (parser, true, true, true, true, | |
12834 | true, NULL, clauses); | |
12835 | restore_extension_diagnostics (ext); | |
12836 | break; | |
12837 | } | |
12838 | restore_extension_diagnostics (ext); | |
12839 | } | |
12840 | else if (c_parser_next_tokens_start_declaration (parser)) | |
12841 | { | |
12842 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, | |
12843 | NULL, clauses); | |
12844 | break; | |
12845 | } | |
12846 | c_parser_error (parser, "%<#pragma omp declare simd%> must be followed by " | |
12847 | "function declaration or definition"); | |
12848 | break; | |
12849 | default: | |
12850 | gcc_unreachable (); | |
12851 | } | |
12852 | clauses.release (); | |
953ff289 DN |
12853 | } |
12854 | ||
acf0174b JJ |
12855 | /* Finalize #pragma omp declare simd clauses after FNDECL has been parsed, |
12856 | and put that into "omp declare simd" attribute. */ | |
c2255bc4 | 12857 | |
acf0174b JJ |
12858 | static void |
12859 | c_finish_omp_declare_simd (c_parser *parser, tree fndecl, tree parms, | |
12860 | vec<c_token> clauses) | |
12861 | { | |
b72271b9 | 12862 | if (flag_cilkplus |
41958c28 BI |
12863 | && clauses.exists () && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
12864 | { | |
12865 | error ("%<#pragma omp declare simd%> cannot be used in the same " | |
12866 | "function marked as a Cilk Plus SIMD-enabled function"); | |
12867 | vec_free (parser->cilk_simd_fn_tokens); | |
12868 | return; | |
12869 | } | |
12870 | ||
acf0174b JJ |
12871 | /* Normally first token is CPP_NAME "simd". CPP_EOF there indicates |
12872 | error has been reported and CPP_PRAGMA that c_finish_omp_declare_simd | |
12873 | has already processed the tokens. */ | |
41958c28 | 12874 | if (clauses.exists () && clauses[0].type == CPP_EOF) |
acf0174b JJ |
12875 | return; |
12876 | if (fndecl == NULL_TREE || TREE_CODE (fndecl) != FUNCTION_DECL) | |
12877 | { | |
12878 | error ("%<#pragma omp declare simd%> not immediately followed by " | |
12879 | "a function declaration or definition"); | |
12880 | clauses[0].type = CPP_EOF; | |
12881 | return; | |
12882 | } | |
41958c28 | 12883 | if (clauses.exists () && clauses[0].type != CPP_NAME) |
acf0174b JJ |
12884 | { |
12885 | error_at (DECL_SOURCE_LOCATION (fndecl), | |
12886 | "%<#pragma omp declare simd%> not immediately followed by " | |
12887 | "a single function declaration or definition"); | |
12888 | clauses[0].type = CPP_EOF; | |
12889 | return; | |
12890 | } | |
953ff289 | 12891 | |
acf0174b JJ |
12892 | if (parms == NULL_TREE) |
12893 | parms = DECL_ARGUMENTS (fndecl); | |
953ff289 | 12894 | |
acf0174b JJ |
12895 | unsigned int tokens_avail = parser->tokens_avail; |
12896 | gcc_assert (parser->tokens == &parser->tokens_buf[0]); | |
41958c28 BI |
12897 | bool is_cilkplus_cilk_simd_fn = false; |
12898 | ||
b72271b9 | 12899 | if (flag_cilkplus && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
41958c28 BI |
12900 | { |
12901 | parser->tokens = parser->cilk_simd_fn_tokens->address (); | |
12902 | parser->tokens_avail = vec_safe_length (parser->cilk_simd_fn_tokens); | |
12903 | is_cilkplus_cilk_simd_fn = true; | |
12904 | } | |
12905 | else | |
12906 | { | |
12907 | parser->tokens = clauses.address (); | |
12908 | parser->tokens_avail = clauses.length (); | |
12909 | } | |
12910 | ||
acf0174b JJ |
12911 | /* c_parser_omp_declare_simd pushed 2 extra CPP_EOF tokens at the end. */ |
12912 | while (parser->tokens_avail > 3) | |
12913 | { | |
12914 | c_token *token = c_parser_peek_token (parser); | |
41958c28 BI |
12915 | if (!is_cilkplus_cilk_simd_fn) |
12916 | gcc_assert (token->type == CPP_NAME | |
12917 | && strcmp (IDENTIFIER_POINTER (token->value), "simd") == 0); | |
12918 | else | |
12919 | gcc_assert (token->type == CPP_NAME | |
12920 | && is_cilkplus_vector_p (token->value)); | |
acf0174b JJ |
12921 | c_parser_consume_token (parser); |
12922 | parser->in_pragma = true; | |
953ff289 | 12923 | |
41958c28 BI |
12924 | tree c = NULL_TREE; |
12925 | if (is_cilkplus_cilk_simd_fn) | |
12926 | c = c_parser_omp_all_clauses (parser, CILK_SIMD_FN_CLAUSE_MASK, | |
12927 | "SIMD-enabled functions attribute"); | |
12928 | else | |
12929 | c = c_parser_omp_all_clauses (parser, OMP_DECLARE_SIMD_CLAUSE_MASK, | |
12930 | "#pragma omp declare simd"); | |
acf0174b JJ |
12931 | c = c_omp_declare_simd_clauses_to_numbers (parms, c); |
12932 | if (c != NULL_TREE) | |
12933 | c = tree_cons (NULL_TREE, c, NULL_TREE); | |
41958c28 BI |
12934 | if (is_cilkplus_cilk_simd_fn) |
12935 | { | |
74558dd9 BI |
12936 | tree k = build_tree_list (get_identifier ("cilk simd function"), |
12937 | NULL_TREE); | |
41958c28 BI |
12938 | TREE_CHAIN (k) = DECL_ATTRIBUTES (fndecl); |
12939 | DECL_ATTRIBUTES (fndecl) = k; | |
12940 | } | |
acf0174b JJ |
12941 | c = build_tree_list (get_identifier ("omp declare simd"), c); |
12942 | TREE_CHAIN (c) = DECL_ATTRIBUTES (fndecl); | |
12943 | DECL_ATTRIBUTES (fndecl) = c; | |
12944 | } | |
953ff289 | 12945 | |
acf0174b JJ |
12946 | parser->tokens = &parser->tokens_buf[0]; |
12947 | parser->tokens_avail = tokens_avail; | |
41958c28 BI |
12948 | if (clauses.exists ()) |
12949 | clauses[0].type = CPP_PRAGMA; | |
12950 | ||
12951 | if (!vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
12952 | vec_free (parser->cilk_simd_fn_tokens); | |
953ff289 DN |
12953 | } |
12954 | ||
953ff289 | 12955 | |
acf0174b JJ |
12956 | /* OpenMP 4.0: |
12957 | # pragma omp declare target new-line | |
12958 | declarations and definitions | |
12959 | # pragma omp end declare target new-line */ | |
953ff289 | 12960 | |
acf0174b JJ |
12961 | static void |
12962 | c_parser_omp_declare_target (c_parser *parser) | |
953ff289 | 12963 | { |
acf0174b JJ |
12964 | c_parser_skip_to_pragma_eol (parser); |
12965 | current_omp_declare_target_attribute++; | |
12966 | } | |
953ff289 | 12967 | |
acf0174b JJ |
12968 | static void |
12969 | c_parser_omp_end_declare_target (c_parser *parser) | |
12970 | { | |
12971 | location_t loc = c_parser_peek_token (parser)->location; | |
12972 | c_parser_consume_pragma (parser); | |
12973 | if (c_parser_next_token_is (parser, CPP_NAME) | |
12974 | && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser)->value), | |
12975 | "declare") == 0) | |
953ff289 DN |
12976 | { |
12977 | c_parser_consume_token (parser); | |
acf0174b JJ |
12978 | if (c_parser_next_token_is (parser, CPP_NAME) |
12979 | && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser)->value), | |
12980 | "target") == 0) | |
12981 | c_parser_consume_token (parser); | |
12982 | else | |
953ff289 | 12983 | { |
acf0174b JJ |
12984 | c_parser_error (parser, "expected %<target%>"); |
12985 | c_parser_skip_to_pragma_eol (parser); | |
12986 | return; | |
953ff289 DN |
12987 | } |
12988 | } | |
acf0174b JJ |
12989 | else |
12990 | { | |
12991 | c_parser_error (parser, "expected %<declare%>"); | |
12992 | c_parser_skip_to_pragma_eol (parser); | |
12993 | return; | |
12994 | } | |
12995 | c_parser_skip_to_pragma_eol (parser); | |
12996 | if (!current_omp_declare_target_attribute) | |
12997 | error_at (loc, "%<#pragma omp end declare target%> without corresponding " | |
12998 | "%<#pragma omp declare target%>"); | |
12999 | else | |
13000 | current_omp_declare_target_attribute--; | |
13001 | } | |
953ff289 | 13002 | |
953ff289 | 13003 | |
acf0174b JJ |
13004 | /* OpenMP 4.0 |
13005 | #pragma omp declare reduction (reduction-id : typename-list : expression) \ | |
13006 | initializer-clause[opt] new-line | |
13007 | ||
13008 | initializer-clause: | |
13009 | initializer (omp_priv = initializer) | |
13010 | initializer (function-name (argument-list)) */ | |
13011 | ||
13012 | static void | |
13013 | c_parser_omp_declare_reduction (c_parser *parser, enum pragma_context context) | |
13014 | { | |
13015 | unsigned int tokens_avail = 0, i; | |
13016 | vec<tree> types = vNULL; | |
13017 | vec<c_token> clauses = vNULL; | |
13018 | enum tree_code reduc_code = ERROR_MARK; | |
13019 | tree reduc_id = NULL_TREE; | |
13020 | tree type; | |
13021 | location_t rloc = c_parser_peek_token (parser)->location; | |
13022 | ||
13023 | if (context == pragma_struct || context == pragma_param) | |
953ff289 | 13024 | { |
acf0174b JJ |
13025 | error ("%<#pragma omp declare reduction%> not at file or block scope"); |
13026 | goto fail; | |
13027 | } | |
953ff289 | 13028 | |
acf0174b JJ |
13029 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
13030 | goto fail; | |
953ff289 | 13031 | |
acf0174b JJ |
13032 | switch (c_parser_peek_token (parser)->type) |
13033 | { | |
13034 | case CPP_PLUS: | |
13035 | reduc_code = PLUS_EXPR; | |
13036 | break; | |
13037 | case CPP_MULT: | |
13038 | reduc_code = MULT_EXPR; | |
13039 | break; | |
13040 | case CPP_MINUS: | |
13041 | reduc_code = MINUS_EXPR; | |
13042 | break; | |
13043 | case CPP_AND: | |
13044 | reduc_code = BIT_AND_EXPR; | |
13045 | break; | |
13046 | case CPP_XOR: | |
13047 | reduc_code = BIT_XOR_EXPR; | |
13048 | break; | |
13049 | case CPP_OR: | |
13050 | reduc_code = BIT_IOR_EXPR; | |
13051 | break; | |
13052 | case CPP_AND_AND: | |
13053 | reduc_code = TRUTH_ANDIF_EXPR; | |
13054 | break; | |
13055 | case CPP_OR_OR: | |
13056 | reduc_code = TRUTH_ORIF_EXPR; | |
13057 | break; | |
13058 | case CPP_NAME: | |
13059 | const char *p; | |
13060 | p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
13061 | if (strcmp (p, "min") == 0) | |
13062 | { | |
13063 | reduc_code = MIN_EXPR; | |
13064 | break; | |
13065 | } | |
13066 | if (strcmp (p, "max") == 0) | |
13067 | { | |
13068 | reduc_code = MAX_EXPR; | |
13069 | break; | |
13070 | } | |
13071 | reduc_id = c_parser_peek_token (parser)->value; | |
953ff289 | 13072 | break; |
953ff289 | 13073 | default: |
acf0174b JJ |
13074 | c_parser_error (parser, |
13075 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
13076 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or identifier"); | |
13077 | goto fail; | |
953ff289 DN |
13078 | } |
13079 | ||
acf0174b JJ |
13080 | tree orig_reduc_id, reduc_decl; |
13081 | orig_reduc_id = reduc_id; | |
13082 | reduc_id = c_omp_reduction_id (reduc_code, reduc_id); | |
13083 | reduc_decl = c_omp_reduction_decl (reduc_id); | |
13084 | c_parser_consume_token (parser); | |
953ff289 | 13085 | |
acf0174b JJ |
13086 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
13087 | goto fail; | |
c2255bc4 | 13088 | |
acf0174b JJ |
13089 | while (true) |
13090 | { | |
13091 | location_t loc = c_parser_peek_token (parser)->location; | |
13092 | struct c_type_name *ctype = c_parser_type_name (parser); | |
13093 | if (ctype != NULL) | |
13094 | { | |
13095 | type = groktypename (ctype, NULL, NULL); | |
13096 | if (type == error_mark_node) | |
13097 | ; | |
13098 | else if ((INTEGRAL_TYPE_P (type) | |
13099 | || TREE_CODE (type) == REAL_TYPE | |
13100 | || TREE_CODE (type) == COMPLEX_TYPE) | |
13101 | && orig_reduc_id == NULL_TREE) | |
13102 | error_at (loc, "predeclared arithmetic type in " | |
13103 | "%<#pragma omp declare reduction%>"); | |
13104 | else if (TREE_CODE (type) == FUNCTION_TYPE | |
13105 | || TREE_CODE (type) == ARRAY_TYPE) | |
13106 | error_at (loc, "function or array type in " | |
13107 | "%<#pragma omp declare reduction%>"); | |
13108 | else if (TYPE_QUALS_NO_ADDR_SPACE (type)) | |
13109 | error_at (loc, "const, volatile or restrict qualified type in " | |
13110 | "%<#pragma omp declare reduction%>"); | |
13111 | else | |
13112 | { | |
13113 | tree t; | |
13114 | for (t = DECL_INITIAL (reduc_decl); t; t = TREE_CHAIN (t)) | |
13115 | if (comptypes (TREE_PURPOSE (t), type)) | |
13116 | { | |
13117 | error_at (loc, "redeclaration of %qs " | |
13118 | "%<#pragma omp declare reduction%> for " | |
13119 | "type %qT", | |
13120 | IDENTIFIER_POINTER (reduc_id) | |
13121 | + sizeof ("omp declare reduction ") - 1, | |
13122 | type); | |
13123 | location_t ploc | |
13124 | = DECL_SOURCE_LOCATION (TREE_VEC_ELT (TREE_VALUE (t), | |
13125 | 0)); | |
13126 | error_at (ploc, "previous %<#pragma omp declare " | |
13127 | "reduction%>"); | |
13128 | break; | |
13129 | } | |
13130 | if (t == NULL_TREE) | |
13131 | types.safe_push (type); | |
13132 | } | |
13133 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
13134 | c_parser_consume_token (parser); | |
13135 | else | |
13136 | break; | |
13137 | } | |
13138 | else | |
13139 | break; | |
13140 | } | |
953ff289 | 13141 | |
acf0174b JJ |
13142 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>") |
13143 | || types.is_empty ()) | |
13144 | { | |
13145 | fail: | |
13146 | clauses.release (); | |
13147 | types.release (); | |
13148 | while (true) | |
13149 | { | |
13150 | c_token *token = c_parser_peek_token (parser); | |
13151 | if (token->type == CPP_EOF || token->type == CPP_PRAGMA_EOL) | |
13152 | break; | |
13153 | c_parser_consume_token (parser); | |
13154 | } | |
13155 | c_parser_skip_to_pragma_eol (parser); | |
13156 | return; | |
13157 | } | |
953ff289 | 13158 | |
acf0174b JJ |
13159 | if (types.length () > 1) |
13160 | { | |
13161 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
13162 | { | |
13163 | c_token *token = c_parser_peek_token (parser); | |
13164 | if (token->type == CPP_EOF) | |
13165 | goto fail; | |
13166 | clauses.safe_push (*token); | |
13167 | c_parser_consume_token (parser); | |
13168 | } | |
13169 | clauses.safe_push (*c_parser_peek_token (parser)); | |
13170 | c_parser_skip_to_pragma_eol (parser); | |
953ff289 | 13171 | |
acf0174b JJ |
13172 | /* Make sure nothing tries to read past the end of the tokens. */ |
13173 | c_token eof_token; | |
13174 | memset (&eof_token, 0, sizeof (eof_token)); | |
13175 | eof_token.type = CPP_EOF; | |
13176 | clauses.safe_push (eof_token); | |
13177 | clauses.safe_push (eof_token); | |
13178 | } | |
953ff289 | 13179 | |
acf0174b JJ |
13180 | int errs = errorcount; |
13181 | FOR_EACH_VEC_ELT (types, i, type) | |
13182 | { | |
13183 | tokens_avail = parser->tokens_avail; | |
13184 | gcc_assert (parser->tokens == &parser->tokens_buf[0]); | |
13185 | if (!clauses.is_empty ()) | |
13186 | { | |
13187 | parser->tokens = clauses.address (); | |
13188 | parser->tokens_avail = clauses.length (); | |
13189 | parser->in_pragma = true; | |
13190 | } | |
953ff289 | 13191 | |
acf0174b JJ |
13192 | bool nested = current_function_decl != NULL_TREE; |
13193 | if (nested) | |
13194 | c_push_function_context (); | |
13195 | tree fndecl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, | |
13196 | reduc_id, default_function_type); | |
13197 | current_function_decl = fndecl; | |
13198 | allocate_struct_function (fndecl, true); | |
13199 | push_scope (); | |
13200 | tree stmt = push_stmt_list (); | |
13201 | /* Intentionally BUILTINS_LOCATION, so that -Wshadow doesn't | |
13202 | warn about these. */ | |
13203 | tree omp_out = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13204 | get_identifier ("omp_out"), type); | |
13205 | DECL_ARTIFICIAL (omp_out) = 1; | |
13206 | DECL_CONTEXT (omp_out) = fndecl; | |
13207 | pushdecl (omp_out); | |
13208 | tree omp_in = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13209 | get_identifier ("omp_in"), type); | |
13210 | DECL_ARTIFICIAL (omp_in) = 1; | |
13211 | DECL_CONTEXT (omp_in) = fndecl; | |
13212 | pushdecl (omp_in); | |
13213 | struct c_expr combiner = c_parser_expression (parser); | |
13214 | struct c_expr initializer; | |
13215 | tree omp_priv = NULL_TREE, omp_orig = NULL_TREE; | |
13216 | bool bad = false; | |
13217 | initializer.value = error_mark_node; | |
13218 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
13219 | bad = true; | |
13220 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
13221 | && strcmp (IDENTIFIER_POINTER | |
13222 | (c_parser_peek_token (parser)->value), | |
13223 | "initializer") == 0) | |
13224 | { | |
13225 | c_parser_consume_token (parser); | |
13226 | pop_scope (); | |
13227 | push_scope (); | |
13228 | omp_priv = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13229 | get_identifier ("omp_priv"), type); | |
13230 | DECL_ARTIFICIAL (omp_priv) = 1; | |
13231 | DECL_INITIAL (omp_priv) = error_mark_node; | |
13232 | DECL_CONTEXT (omp_priv) = fndecl; | |
13233 | pushdecl (omp_priv); | |
13234 | omp_orig = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13235 | get_identifier ("omp_orig"), type); | |
13236 | DECL_ARTIFICIAL (omp_orig) = 1; | |
13237 | DECL_CONTEXT (omp_orig) = fndecl; | |
13238 | pushdecl (omp_orig); | |
13239 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13240 | bad = true; | |
13241 | else if (!c_parser_next_token_is (parser, CPP_NAME)) | |
13242 | { | |
13243 | c_parser_error (parser, "expected %<omp_priv%> or " | |
13244 | "function-name"); | |
13245 | bad = true; | |
13246 | } | |
13247 | else if (strcmp (IDENTIFIER_POINTER | |
13248 | (c_parser_peek_token (parser)->value), | |
13249 | "omp_priv") != 0) | |
13250 | { | |
13251 | if (c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
13252 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
13253 | { | |
13254 | c_parser_error (parser, "expected function-name %<(%>"); | |
13255 | bad = true; | |
13256 | } | |
13257 | else | |
13258 | initializer = c_parser_postfix_expression (parser); | |
13259 | if (initializer.value | |
13260 | && TREE_CODE (initializer.value) == CALL_EXPR) | |
13261 | { | |
13262 | int j; | |
13263 | tree c = initializer.value; | |
13264 | for (j = 0; j < call_expr_nargs (c); j++) | |
13265 | if (TREE_CODE (CALL_EXPR_ARG (c, j)) == ADDR_EXPR | |
13266 | && TREE_OPERAND (CALL_EXPR_ARG (c, j), 0) == omp_priv) | |
13267 | break; | |
13268 | if (j == call_expr_nargs (c)) | |
13269 | error ("one of the initializer call arguments should be " | |
13270 | "%<&omp_priv%>"); | |
13271 | } | |
13272 | } | |
13273 | else | |
13274 | { | |
13275 | c_parser_consume_token (parser); | |
13276 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
13277 | bad = true; | |
13278 | else | |
13279 | { | |
13280 | tree st = push_stmt_list (); | |
13281 | start_init (omp_priv, NULL_TREE, 0); | |
13282 | location_t loc = c_parser_peek_token (parser)->location; | |
13283 | struct c_expr init = c_parser_initializer (parser); | |
13284 | finish_init (); | |
13285 | finish_decl (omp_priv, loc, init.value, | |
13286 | init.original_type, NULL_TREE); | |
13287 | pop_stmt_list (st); | |
13288 | } | |
13289 | } | |
13290 | if (!bad | |
13291 | && !c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
13292 | bad = true; | |
13293 | } | |
c2255bc4 | 13294 | |
acf0174b JJ |
13295 | if (!bad) |
13296 | { | |
13297 | c_parser_skip_to_pragma_eol (parser); | |
a68ab351 | 13298 | |
acf0174b JJ |
13299 | tree t = tree_cons (type, make_tree_vec (omp_priv ? 6 : 3), |
13300 | DECL_INITIAL (reduc_decl)); | |
13301 | DECL_INITIAL (reduc_decl) = t; | |
13302 | DECL_SOURCE_LOCATION (omp_out) = rloc; | |
13303 | TREE_VEC_ELT (TREE_VALUE (t), 0) = omp_out; | |
13304 | TREE_VEC_ELT (TREE_VALUE (t), 1) = omp_in; | |
13305 | TREE_VEC_ELT (TREE_VALUE (t), 2) = combiner.value; | |
13306 | walk_tree (&combiner.value, c_check_omp_declare_reduction_r, | |
13307 | &TREE_VEC_ELT (TREE_VALUE (t), 0), NULL); | |
13308 | if (omp_priv) | |
13309 | { | |
13310 | DECL_SOURCE_LOCATION (omp_priv) = rloc; | |
13311 | TREE_VEC_ELT (TREE_VALUE (t), 3) = omp_priv; | |
13312 | TREE_VEC_ELT (TREE_VALUE (t), 4) = omp_orig; | |
13313 | TREE_VEC_ELT (TREE_VALUE (t), 5) = initializer.value; | |
13314 | walk_tree (&initializer.value, c_check_omp_declare_reduction_r, | |
13315 | &TREE_VEC_ELT (TREE_VALUE (t), 3), NULL); | |
13316 | walk_tree (&DECL_INITIAL (omp_priv), | |
13317 | c_check_omp_declare_reduction_r, | |
13318 | &TREE_VEC_ELT (TREE_VALUE (t), 3), NULL); | |
13319 | } | |
13320 | } | |
a68ab351 | 13321 | |
acf0174b JJ |
13322 | pop_stmt_list (stmt); |
13323 | pop_scope (); | |
13324 | if (cfun->language != NULL) | |
13325 | { | |
13326 | ggc_free (cfun->language); | |
13327 | cfun->language = NULL; | |
13328 | } | |
13329 | set_cfun (NULL); | |
13330 | current_function_decl = NULL_TREE; | |
13331 | if (nested) | |
13332 | c_pop_function_context (); | |
a68ab351 | 13333 | |
acf0174b JJ |
13334 | if (!clauses.is_empty ()) |
13335 | { | |
13336 | parser->tokens = &parser->tokens_buf[0]; | |
13337 | parser->tokens_avail = tokens_avail; | |
13338 | } | |
13339 | if (bad) | |
13340 | goto fail; | |
13341 | if (errs != errorcount) | |
13342 | break; | |
13343 | } | |
a68ab351 | 13344 | |
acf0174b JJ |
13345 | clauses.release (); |
13346 | types.release (); | |
a68ab351 JJ |
13347 | } |
13348 | ||
953ff289 | 13349 | |
acf0174b JJ |
13350 | /* OpenMP 4.0 |
13351 | #pragma omp declare simd declare-simd-clauses[optseq] new-line | |
13352 | #pragma omp declare reduction (reduction-id : typename-list : expression) \ | |
13353 | initializer-clause[opt] new-line | |
13354 | #pragma omp declare target new-line */ | |
20906c66 JJ |
13355 | |
13356 | static void | |
acf0174b | 13357 | c_parser_omp_declare (c_parser *parser, enum pragma_context context) |
20906c66 | 13358 | { |
20906c66 | 13359 | c_parser_consume_pragma (parser); |
acf0174b JJ |
13360 | if (c_parser_next_token_is (parser, CPP_NAME)) |
13361 | { | |
13362 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
13363 | if (strcmp (p, "simd") == 0) | |
13364 | { | |
13365 | /* c_parser_consume_token (parser); done in | |
13366 | c_parser_omp_declare_simd. */ | |
13367 | c_parser_omp_declare_simd (parser, context); | |
13368 | return; | |
13369 | } | |
13370 | if (strcmp (p, "reduction") == 0) | |
13371 | { | |
13372 | c_parser_consume_token (parser); | |
13373 | c_parser_omp_declare_reduction (parser, context); | |
13374 | return; | |
13375 | } | |
6d7f7e0a TB |
13376 | if (!flag_openmp) /* flag_openmp_simd */ |
13377 | { | |
13378 | c_parser_skip_to_pragma_eol (parser); | |
13379 | return; | |
13380 | } | |
acf0174b JJ |
13381 | if (strcmp (p, "target") == 0) |
13382 | { | |
13383 | c_parser_consume_token (parser); | |
13384 | c_parser_omp_declare_target (parser); | |
13385 | return; | |
13386 | } | |
13387 | } | |
20906c66 | 13388 | |
acf0174b JJ |
13389 | c_parser_error (parser, "expected %<simd%> or %<reduction%> " |
13390 | "or %<target%>"); | |
13391 | c_parser_skip_to_pragma_eol (parser); | |
20906c66 JJ |
13392 | } |
13393 | ||
953ff289 DN |
13394 | /* Main entry point to parsing most OpenMP pragmas. */ |
13395 | ||
13396 | static void | |
13397 | c_parser_omp_construct (c_parser *parser) | |
13398 | { | |
13399 | enum pragma_kind p_kind; | |
13400 | location_t loc; | |
13401 | tree stmt; | |
acf0174b JJ |
13402 | char p_name[sizeof "#pragma omp teams distribute parallel for simd"]; |
13403 | omp_clause_mask mask (0); | |
953ff289 DN |
13404 | |
13405 | loc = c_parser_peek_token (parser)->location; | |
13406 | p_kind = c_parser_peek_token (parser)->pragma_kind; | |
13407 | c_parser_consume_pragma (parser); | |
13408 | ||
13409 | switch (p_kind) | |
13410 | { | |
13411 | case PRAGMA_OMP_ATOMIC: | |
c2255bc4 | 13412 | c_parser_omp_atomic (loc, parser); |
953ff289 DN |
13413 | return; |
13414 | case PRAGMA_OMP_CRITICAL: | |
c2255bc4 | 13415 | stmt = c_parser_omp_critical (loc, parser); |
953ff289 | 13416 | break; |
acf0174b JJ |
13417 | case PRAGMA_OMP_DISTRIBUTE: |
13418 | strcpy (p_name, "#pragma omp"); | |
13419 | stmt = c_parser_omp_distribute (loc, parser, p_name, mask, NULL); | |
13420 | break; | |
953ff289 | 13421 | case PRAGMA_OMP_FOR: |
acf0174b JJ |
13422 | strcpy (p_name, "#pragma omp"); |
13423 | stmt = c_parser_omp_for (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13424 | break; |
13425 | case PRAGMA_OMP_MASTER: | |
c2255bc4 | 13426 | stmt = c_parser_omp_master (loc, parser); |
953ff289 DN |
13427 | break; |
13428 | case PRAGMA_OMP_ORDERED: | |
c2255bc4 | 13429 | stmt = c_parser_omp_ordered (loc, parser); |
953ff289 DN |
13430 | break; |
13431 | case PRAGMA_OMP_PARALLEL: | |
acf0174b JJ |
13432 | strcpy (p_name, "#pragma omp"); |
13433 | stmt = c_parser_omp_parallel (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13434 | break; |
13435 | case PRAGMA_OMP_SECTIONS: | |
acf0174b JJ |
13436 | strcpy (p_name, "#pragma omp"); |
13437 | stmt = c_parser_omp_sections (loc, parser, p_name, mask, NULL); | |
13438 | break; | |
13439 | case PRAGMA_OMP_SIMD: | |
13440 | strcpy (p_name, "#pragma omp"); | |
13441 | stmt = c_parser_omp_simd (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13442 | break; |
13443 | case PRAGMA_OMP_SINGLE: | |
c2255bc4 | 13444 | stmt = c_parser_omp_single (loc, parser); |
953ff289 | 13445 | break; |
a68ab351 | 13446 | case PRAGMA_OMP_TASK: |
c2255bc4 | 13447 | stmt = c_parser_omp_task (loc, parser); |
a68ab351 | 13448 | break; |
acf0174b JJ |
13449 | case PRAGMA_OMP_TASKGROUP: |
13450 | stmt = c_parser_omp_taskgroup (parser); | |
13451 | break; | |
13452 | case PRAGMA_OMP_TEAMS: | |
13453 | strcpy (p_name, "#pragma omp"); | |
13454 | stmt = c_parser_omp_teams (loc, parser, p_name, mask, NULL); | |
13455 | break; | |
953ff289 DN |
13456 | default: |
13457 | gcc_unreachable (); | |
13458 | } | |
13459 | ||
13460 | if (stmt) | |
c2255bc4 | 13461 | gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION); |
953ff289 DN |
13462 | } |
13463 | ||
13464 | ||
13465 | /* OpenMP 2.5: | |
13466 | # pragma omp threadprivate (variable-list) */ | |
13467 | ||
13468 | static void | |
13469 | c_parser_omp_threadprivate (c_parser *parser) | |
13470 | { | |
13471 | tree vars, t; | |
c2255bc4 | 13472 | location_t loc; |
953ff289 DN |
13473 | |
13474 | c_parser_consume_pragma (parser); | |
c2255bc4 | 13475 | loc = c_parser_peek_token (parser)->location; |
d75d71e0 | 13476 | vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 | 13477 | |
953ff289 DN |
13478 | /* Mark every variable in VARS to be assigned thread local storage. */ |
13479 | for (t = vars; t; t = TREE_CHAIN (t)) | |
13480 | { | |
13481 | tree v = TREE_PURPOSE (t); | |
13482 | ||
c2255bc4 AH |
13483 | /* FIXME diagnostics: Ideally we should keep individual |
13484 | locations for all the variables in the var list to make the | |
13485 | following errors more precise. Perhaps | |
13486 | c_parser_omp_var_list_parens() should construct a list of | |
13487 | locations to go along with the var list. */ | |
13488 | ||
953ff289 DN |
13489 | /* If V had already been marked threadprivate, it doesn't matter |
13490 | whether it had been used prior to this point. */ | |
5df27e4a | 13491 | if (TREE_CODE (v) != VAR_DECL) |
c2255bc4 | 13492 | error_at (loc, "%qD is not a variable", v); |
5df27e4a | 13493 | else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v)) |
c2255bc4 | 13494 | error_at (loc, "%qE declared %<threadprivate%> after first use", v); |
953ff289 | 13495 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) |
c2255bc4 | 13496 | error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v); |
5df27e4a JJ |
13497 | else if (TREE_TYPE (v) == error_mark_node) |
13498 | ; | |
953ff289 | 13499 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) |
c2255bc4 | 13500 | error_at (loc, "%<threadprivate%> %qE has incomplete type", v); |
953ff289 DN |
13501 | else |
13502 | { | |
13503 | if (! DECL_THREAD_LOCAL_P (v)) | |
13504 | { | |
13505 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
13506 | /* If rtl has been already set for this var, call | |
13507 | make_decl_rtl once again, so that encode_section_info | |
13508 | has a chance to look at the new decl flags. */ | |
13509 | if (DECL_RTL_SET_P (v)) | |
13510 | make_decl_rtl (v); | |
13511 | } | |
13512 | C_DECL_THREADPRIVATE_P (v) = 1; | |
13513 | } | |
13514 | } | |
13515 | ||
13516 | c_parser_skip_to_pragma_eol (parser); | |
13517 | } | |
c02065fc AH |
13518 | \f |
13519 | /* Cilk Plus <#pragma simd> parsing routines. */ | |
13520 | ||
13521 | /* Helper function for c_parser_pragma. Perform some sanity checking | |
13522 | for <#pragma simd> constructs. Returns FALSE if there was a | |
13523 | problem. */ | |
13524 | ||
13525 | static bool | |
13526 | c_parser_cilk_verify_simd (c_parser *parser, | |
13527 | enum pragma_context context) | |
13528 | { | |
b72271b9 | 13529 | if (!flag_cilkplus) |
c02065fc AH |
13530 | { |
13531 | warning (0, "pragma simd ignored because -fcilkplus is not enabled"); | |
13532 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
13533 | return false; | |
13534 | } | |
13535 | if (context == pragma_external) | |
13536 | { | |
13537 | c_parser_error (parser,"pragma simd must be inside a function"); | |
13538 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
13539 | return false; | |
13540 | } | |
13541 | return true; | |
13542 | } | |
13543 | ||
13544 | /* Cilk Plus: | |
41958c28 BI |
13545 | This function is shared by SIMD-enabled functions and #pragma simd. |
13546 | If IS_SIMD_FN is true then it is parsing a SIMD-enabled function and | |
13547 | CLAUSES is unused. The main purpose of this function is to parse a | |
13548 | vectorlength attribute or clause and check for parse errors. | |
13549 | When IS_SIMD_FN is true then the function is merely caching the tokens | |
13550 | in PARSER->CILK_SIMD_FN_TOKENS. If errors are found then the token | |
13551 | cache is cleared since there is no reason to continue. | |
13552 | Syntax: | |
13553 | vectorlength ( constant-expression ) */ | |
c02065fc AH |
13554 | |
13555 | static tree | |
41958c28 BI |
13556 | c_parser_cilk_clause_vectorlength (c_parser *parser, tree clauses, |
13557 | bool is_simd_fn) | |
c02065fc | 13558 | { |
41958c28 BI |
13559 | if (is_simd_fn) |
13560 | check_no_duplicate_clause (clauses, OMP_CLAUSE_SIMDLEN, "vectorlength"); | |
13561 | else | |
c02065fc AH |
13562 | /* The vectorlength clause behaves exactly like OpenMP's safelen |
13563 | clause. Represent it in OpenMP terms. */ | |
41958c28 | 13564 | check_no_duplicate_clause (clauses, OMP_CLAUSE_SAFELEN, "vectorlength"); |
c02065fc AH |
13565 | |
13566 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13567 | return clauses; | |
13568 | ||
13569 | location_t loc = c_parser_peek_token (parser)->location; | |
13570 | tree expr = c_parser_expr_no_commas (parser, NULL).value; | |
13571 | expr = c_fully_fold (expr, false, NULL); | |
13572 | ||
41958c28 BI |
13573 | /* If expr is an error_mark_node then the above function would have |
13574 | emitted an error. No reason to do it twice. */ | |
13575 | if (expr == error_mark_node) | |
13576 | ; | |
13577 | else if (!TREE_TYPE (expr) | |
13578 | || !TREE_CONSTANT (expr) | |
13579 | || !INTEGRAL_TYPE_P (TREE_TYPE (expr))) | |
13580 | ||
13581 | error_at (loc, "vectorlength must be an integer constant"); | |
c02065fc AH |
13582 | else if (exact_log2 (TREE_INT_CST_LOW (expr)) == -1) |
13583 | error_at (loc, "vectorlength must be a power of 2"); | |
13584 | else | |
13585 | { | |
41958c28 BI |
13586 | if (is_simd_fn) |
13587 | { | |
13588 | tree u = build_omp_clause (loc, OMP_CLAUSE_SIMDLEN); | |
13589 | OMP_CLAUSE_SIMDLEN_EXPR (u) = expr; | |
13590 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13591 | clauses = u; | |
13592 | } | |
13593 | else | |
13594 | { | |
13595 | tree u = build_omp_clause (loc, OMP_CLAUSE_SAFELEN); | |
13596 | OMP_CLAUSE_SAFELEN_EXPR (u) = expr; | |
13597 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13598 | clauses = u; | |
13599 | } | |
c02065fc AH |
13600 | } |
13601 | ||
13602 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
13603 | ||
13604 | return clauses; | |
13605 | } | |
13606 | ||
13607 | /* Cilk Plus: | |
13608 | linear ( simd-linear-variable-list ) | |
13609 | ||
13610 | simd-linear-variable-list: | |
13611 | simd-linear-variable | |
13612 | simd-linear-variable-list , simd-linear-variable | |
13613 | ||
13614 | simd-linear-variable: | |
13615 | id-expression | |
13616 | id-expression : simd-linear-step | |
13617 | ||
13618 | simd-linear-step: | |
13619 | conditional-expression */ | |
13620 | ||
13621 | static tree | |
13622 | c_parser_cilk_clause_linear (c_parser *parser, tree clauses) | |
13623 | { | |
13624 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13625 | return clauses; | |
13626 | ||
13627 | location_t loc = c_parser_peek_token (parser)->location; | |
13628 | ||
13629 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
13630 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
13631 | c_parser_error (parser, "expected identifier"); | |
13632 | ||
13633 | while (c_parser_next_token_is (parser, CPP_NAME) | |
13634 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
13635 | { | |
13636 | tree var = lookup_name (c_parser_peek_token (parser)->value); | |
13637 | ||
13638 | if (var == NULL) | |
13639 | { | |
13640 | undeclared_variable (c_parser_peek_token (parser)->location, | |
13641 | c_parser_peek_token (parser)->value); | |
13642 | c_parser_consume_token (parser); | |
13643 | } | |
13644 | else if (var == error_mark_node) | |
13645 | c_parser_consume_token (parser); | |
13646 | else | |
13647 | { | |
13648 | tree step = integer_one_node; | |
13649 | ||
13650 | /* Parse the linear step if present. */ | |
13651 | if (c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
13652 | { | |
13653 | c_parser_consume_token (parser); | |
13654 | c_parser_consume_token (parser); | |
13655 | ||
13656 | tree expr = c_parser_expr_no_commas (parser, NULL).value; | |
13657 | expr = c_fully_fold (expr, false, NULL); | |
13658 | ||
13659 | if (TREE_TYPE (expr) | |
13660 | && INTEGRAL_TYPE_P (TREE_TYPE (expr)) | |
13661 | && (TREE_CONSTANT (expr) | |
13662 | || DECL_P (expr))) | |
13663 | step = expr; | |
13664 | else | |
13665 | c_parser_error (parser, | |
13666 | "step size must be an integer constant " | |
13667 | "expression or an integer variable"); | |
13668 | } | |
13669 | else | |
13670 | c_parser_consume_token (parser); | |
13671 | ||
13672 | /* Use OMP_CLAUSE_LINEAR, which has the same semantics. */ | |
13673 | tree u = build_omp_clause (loc, OMP_CLAUSE_LINEAR); | |
13674 | OMP_CLAUSE_DECL (u) = var; | |
13675 | OMP_CLAUSE_LINEAR_STEP (u) = step; | |
13676 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13677 | clauses = u; | |
13678 | } | |
13679 | ||
13680 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
13681 | break; | |
13682 | ||
13683 | c_parser_consume_token (parser); | |
13684 | } | |
13685 | ||
13686 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
13687 | ||
13688 | return clauses; | |
13689 | } | |
13690 | ||
13691 | /* Returns the name of the next clause. If the clause is not | |
13692 | recognized SIMD_OMP_CLAUSE_NONE is returned and the next token is | |
13693 | not consumed. Otherwise, the appropriate pragma_simd_clause is | |
13694 | returned and the token is consumed. */ | |
13695 | ||
41958c28 | 13696 | static pragma_omp_clause |
c02065fc AH |
13697 | c_parser_cilk_clause_name (c_parser *parser) |
13698 | { | |
41958c28 | 13699 | pragma_omp_clause result; |
c02065fc AH |
13700 | c_token *token = c_parser_peek_token (parser); |
13701 | ||
13702 | if (!token->value || token->type != CPP_NAME) | |
13703 | return PRAGMA_CILK_CLAUSE_NONE; | |
13704 | ||
13705 | const char *p = IDENTIFIER_POINTER (token->value); | |
13706 | ||
13707 | if (!strcmp (p, "vectorlength")) | |
13708 | result = PRAGMA_CILK_CLAUSE_VECTORLENGTH; | |
13709 | else if (!strcmp (p, "linear")) | |
13710 | result = PRAGMA_CILK_CLAUSE_LINEAR; | |
13711 | else if (!strcmp (p, "private")) | |
13712 | result = PRAGMA_CILK_CLAUSE_PRIVATE; | |
13713 | else if (!strcmp (p, "firstprivate")) | |
13714 | result = PRAGMA_CILK_CLAUSE_FIRSTPRIVATE; | |
13715 | else if (!strcmp (p, "lastprivate")) | |
13716 | result = PRAGMA_CILK_CLAUSE_LASTPRIVATE; | |
13717 | else if (!strcmp (p, "reduction")) | |
13718 | result = PRAGMA_CILK_CLAUSE_REDUCTION; | |
13719 | else | |
13720 | return PRAGMA_CILK_CLAUSE_NONE; | |
13721 | ||
13722 | c_parser_consume_token (parser); | |
13723 | return result; | |
13724 | } | |
13725 | ||
13726 | /* Parse all #<pragma simd> clauses. Return the list of clauses | |
13727 | found. */ | |
13728 | ||
13729 | static tree | |
13730 | c_parser_cilk_all_clauses (c_parser *parser) | |
13731 | { | |
13732 | tree clauses = NULL; | |
13733 | ||
13734 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
13735 | { | |
41958c28 | 13736 | pragma_omp_clause c_kind; |
c02065fc AH |
13737 | |
13738 | c_kind = c_parser_cilk_clause_name (parser); | |
13739 | ||
13740 | switch (c_kind) | |
13741 | { | |
13742 | case PRAGMA_CILK_CLAUSE_VECTORLENGTH: | |
41958c28 | 13743 | clauses = c_parser_cilk_clause_vectorlength (parser, clauses, false); |
c02065fc AH |
13744 | break; |
13745 | case PRAGMA_CILK_CLAUSE_LINEAR: | |
13746 | clauses = c_parser_cilk_clause_linear (parser, clauses); | |
13747 | break; | |
13748 | case PRAGMA_CILK_CLAUSE_PRIVATE: | |
13749 | /* Use the OpenMP counterpart. */ | |
13750 | clauses = c_parser_omp_clause_private (parser, clauses); | |
13751 | break; | |
13752 | case PRAGMA_CILK_CLAUSE_FIRSTPRIVATE: | |
13753 | /* Use the OpenMP counterpart. */ | |
13754 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
13755 | break; | |
13756 | case PRAGMA_CILK_CLAUSE_LASTPRIVATE: | |
13757 | /* Use the OpenMP counterpart. */ | |
13758 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
13759 | break; | |
13760 | case PRAGMA_CILK_CLAUSE_REDUCTION: | |
13761 | /* Use the OpenMP counterpart. */ | |
13762 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
13763 | break; | |
13764 | default: | |
13765 | c_parser_error (parser, "expected %<#pragma simd%> clause"); | |
13766 | goto saw_error; | |
13767 | } | |
13768 | } | |
13769 | ||
13770 | saw_error: | |
13771 | c_parser_skip_to_pragma_eol (parser); | |
13772 | return c_finish_cilk_clauses (clauses); | |
13773 | } | |
13774 | ||
13775 | /* Main entry point for parsing Cilk Plus <#pragma simd> for | |
13776 | loops. */ | |
953ff289 | 13777 | |
c02065fc | 13778 | static void |
e7bd1de1 | 13779 | c_parser_cilk_simd (c_parser *parser) |
c02065fc | 13780 | { |
c02065fc AH |
13781 | tree clauses = c_parser_cilk_all_clauses (parser); |
13782 | tree block = c_begin_compound_stmt (true); | |
13783 | location_t loc = c_parser_peek_token (parser)->location; | |
13784 | c_parser_omp_for_loop (loc, parser, CILK_SIMD, clauses, NULL); | |
13785 | block = c_end_compound_stmt (loc, block, true); | |
13786 | add_stmt (block); | |
13787 | } | |
13788 | \f | |
0a35513e AH |
13789 | /* Parse a transaction attribute (GCC Extension). |
13790 | ||
13791 | transaction-attribute: | |
13792 | attributes | |
13793 | [ [ any-word ] ] | |
13794 | ||
13795 | The transactional memory language description is written for C++, | |
13796 | and uses the C++0x attribute syntax. For compatibility, allow the | |
13797 | bracket style for transactions in C as well. */ | |
13798 | ||
13799 | static tree | |
13800 | c_parser_transaction_attributes (c_parser *parser) | |
13801 | { | |
13802 | tree attr_name, attr = NULL; | |
13803 | ||
13804 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
13805 | return c_parser_attributes (parser); | |
13806 | ||
13807 | if (!c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
13808 | return NULL_TREE; | |
13809 | c_parser_consume_token (parser); | |
13810 | if (!c_parser_require (parser, CPP_OPEN_SQUARE, "expected %<[%>")) | |
13811 | goto error1; | |
13812 | ||
13813 | attr_name = c_parser_attribute_any_word (parser); | |
13814 | if (attr_name) | |
13815 | { | |
13816 | c_parser_consume_token (parser); | |
13817 | attr = build_tree_list (attr_name, NULL_TREE); | |
13818 | } | |
13819 | else | |
13820 | c_parser_error (parser, "expected identifier"); | |
13821 | ||
13822 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
13823 | error1: | |
13824 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
13825 | return attr; | |
13826 | } | |
13827 | ||
13828 | /* Parse a __transaction_atomic or __transaction_relaxed statement | |
13829 | (GCC Extension). | |
13830 | ||
13831 | transaction-statement: | |
13832 | __transaction_atomic transaction-attribute[opt] compound-statement | |
13833 | __transaction_relaxed compound-statement | |
13834 | ||
13835 | Note that the only valid attribute is: "outer". | |
13836 | */ | |
13837 | ||
13838 | static tree | |
13839 | c_parser_transaction (c_parser *parser, enum rid keyword) | |
13840 | { | |
13841 | unsigned int old_in = parser->in_transaction; | |
13842 | unsigned int this_in = 1, new_in; | |
13843 | location_t loc = c_parser_peek_token (parser)->location; | |
13844 | tree stmt, attrs; | |
13845 | ||
13846 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
13847 | || keyword == RID_TRANSACTION_RELAXED) | |
13848 | && c_parser_next_token_is_keyword (parser, keyword)); | |
13849 | c_parser_consume_token (parser); | |
13850 | ||
13851 | if (keyword == RID_TRANSACTION_RELAXED) | |
13852 | this_in |= TM_STMT_ATTR_RELAXED; | |
13853 | else | |
13854 | { | |
13855 | attrs = c_parser_transaction_attributes (parser); | |
13856 | if (attrs) | |
13857 | this_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER); | |
13858 | } | |
13859 | ||
13860 | /* Keep track if we're in the lexical scope of an outer transaction. */ | |
13861 | new_in = this_in | (old_in & TM_STMT_ATTR_OUTER); | |
13862 | ||
13863 | parser->in_transaction = new_in; | |
13864 | stmt = c_parser_compound_statement (parser); | |
13865 | parser->in_transaction = old_in; | |
13866 | ||
13867 | if (flag_tm) | |
13868 | stmt = c_finish_transaction (loc, stmt, this_in); | |
13869 | else | |
13870 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
13871 | "%<__transaction_atomic%> without transactional memory support enabled" | |
13872 | : "%<__transaction_relaxed %> " | |
13873 | "without transactional memory support enabled")); | |
13874 | ||
13875 | return stmt; | |
13876 | } | |
13877 | ||
13878 | /* Parse a __transaction_atomic or __transaction_relaxed expression | |
13879 | (GCC Extension). | |
13880 | ||
13881 | transaction-expression: | |
13882 | __transaction_atomic ( expression ) | |
13883 | __transaction_relaxed ( expression ) | |
13884 | */ | |
13885 | ||
13886 | static struct c_expr | |
13887 | c_parser_transaction_expression (c_parser *parser, enum rid keyword) | |
13888 | { | |
13889 | struct c_expr ret; | |
13890 | unsigned int old_in = parser->in_transaction; | |
13891 | unsigned int this_in = 1; | |
13892 | location_t loc = c_parser_peek_token (parser)->location; | |
13893 | tree attrs; | |
13894 | ||
13895 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
13896 | || keyword == RID_TRANSACTION_RELAXED) | |
13897 | && c_parser_next_token_is_keyword (parser, keyword)); | |
13898 | c_parser_consume_token (parser); | |
13899 | ||
13900 | if (keyword == RID_TRANSACTION_RELAXED) | |
13901 | this_in |= TM_STMT_ATTR_RELAXED; | |
13902 | else | |
13903 | { | |
13904 | attrs = c_parser_transaction_attributes (parser); | |
13905 | if (attrs) | |
13906 | this_in |= parse_tm_stmt_attr (attrs, 0); | |
13907 | } | |
13908 | ||
13909 | parser->in_transaction = this_in; | |
69b76518 | 13910 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
0a35513e AH |
13911 | { |
13912 | tree expr = c_parser_expression (parser).value; | |
13913 | ret.original_type = TREE_TYPE (expr); | |
13914 | ret.value = build1 (TRANSACTION_EXPR, ret.original_type, expr); | |
13915 | if (this_in & TM_STMT_ATTR_RELAXED) | |
13916 | TRANSACTION_EXPR_RELAXED (ret.value) = 1; | |
13917 | SET_EXPR_LOCATION (ret.value, loc); | |
13918 | ret.original_code = TRANSACTION_EXPR; | |
69b76518 TR |
13919 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
13920 | { | |
13921 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
13922 | goto error; | |
13923 | } | |
0a35513e AH |
13924 | } |
13925 | else | |
13926 | { | |
69b76518 | 13927 | error: |
0a35513e AH |
13928 | ret.value = error_mark_node; |
13929 | ret.original_code = ERROR_MARK; | |
13930 | ret.original_type = NULL; | |
13931 | } | |
13932 | parser->in_transaction = old_in; | |
13933 | ||
13934 | if (!flag_tm) | |
13935 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
13936 | "%<__transaction_atomic%> without transactional memory support enabled" | |
13937 | : "%<__transaction_relaxed %> " | |
13938 | "without transactional memory support enabled")); | |
13939 | ||
13940 | return ret; | |
13941 | } | |
13942 | ||
13943 | /* Parse a __transaction_cancel statement (GCC Extension). | |
13944 | ||
13945 | transaction-cancel-statement: | |
13946 | __transaction_cancel transaction-attribute[opt] ; | |
13947 | ||
13948 | Note that the only valid attribute is "outer". | |
13949 | */ | |
13950 | ||
13951 | static tree | |
acf0174b | 13952 | c_parser_transaction_cancel (c_parser *parser) |
0a35513e AH |
13953 | { |
13954 | location_t loc = c_parser_peek_token (parser)->location; | |
13955 | tree attrs; | |
13956 | bool is_outer = false; | |
13957 | ||
13958 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TRANSACTION_CANCEL)); | |
13959 | c_parser_consume_token (parser); | |
13960 | ||
13961 | attrs = c_parser_transaction_attributes (parser); | |
13962 | if (attrs) | |
13963 | is_outer = (parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER) != 0); | |
13964 | ||
13965 | if (!flag_tm) | |
13966 | { | |
13967 | error_at (loc, "%<__transaction_cancel%> without " | |
13968 | "transactional memory support enabled"); | |
13969 | goto ret_error; | |
13970 | } | |
13971 | else if (parser->in_transaction & TM_STMT_ATTR_RELAXED) | |
13972 | { | |
13973 | error_at (loc, "%<__transaction_cancel%> within a " | |
13974 | "%<__transaction_relaxed%>"); | |
13975 | goto ret_error; | |
13976 | } | |
13977 | else if (is_outer) | |
13978 | { | |
13979 | if ((parser->in_transaction & TM_STMT_ATTR_OUTER) == 0 | |
13980 | && !is_tm_may_cancel_outer (current_function_decl)) | |
13981 | { | |
13982 | error_at (loc, "outer %<__transaction_cancel%> not " | |
13983 | "within outer %<__transaction_atomic%>"); | |
13984 | error_at (loc, " or a %<transaction_may_cancel_outer%> function"); | |
13985 | goto ret_error; | |
13986 | } | |
13987 | } | |
13988 | else if (parser->in_transaction == 0) | |
13989 | { | |
13990 | error_at (loc, "%<__transaction_cancel%> not within " | |
13991 | "%<__transaction_atomic%>"); | |
13992 | goto ret_error; | |
13993 | } | |
13994 | ||
13995 | return add_stmt (build_tm_abort_call (loc, is_outer)); | |
13996 | ||
13997 | ret_error: | |
13998 | return build1 (NOP_EXPR, void_type_node, error_mark_node); | |
13999 | } | |
bc4071dd | 14000 | \f |
27bf414c JM |
14001 | /* Parse a single source file. */ |
14002 | ||
14003 | void | |
14004 | c_parse_file (void) | |
14005 | { | |
bc4071dd RH |
14006 | /* Use local storage to begin. If the first token is a pragma, parse it. |
14007 | If it is #pragma GCC pch_preprocess, then this will load a PCH file | |
14008 | which will cause garbage collection. */ | |
14009 | c_parser tparser; | |
14010 | ||
14011 | memset (&tparser, 0, sizeof tparser); | |
acf0174b | 14012 | tparser.tokens = &tparser.tokens_buf[0]; |
bc4071dd RH |
14013 | the_parser = &tparser; |
14014 | ||
14015 | if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS) | |
14016 | c_parser_pragma_pch_preprocess (&tparser); | |
14017 | ||
a9429e29 | 14018 | the_parser = ggc_alloc_c_parser (); |
bc4071dd | 14019 | *the_parser = tparser; |
acf0174b JJ |
14020 | if (tparser.tokens == &tparser.tokens_buf[0]) |
14021 | the_parser->tokens = &the_parser->tokens_buf[0]; | |
bc4071dd | 14022 | |
f9417da1 RG |
14023 | /* Initialize EH, if we've been told to do so. */ |
14024 | if (flag_exceptions) | |
1d65f45c | 14025 | using_eh_for_cleanups (); |
f9417da1 | 14026 | |
27bf414c JM |
14027 | c_parser_translation_unit (the_parser); |
14028 | the_parser = NULL; | |
14029 | } | |
14030 | ||
36536d79 BI |
14031 | /* This function parses Cilk Plus array notation. The starting index is |
14032 | passed in INITIAL_INDEX and the array name is passes in ARRAY_VALUE. The | |
14033 | return value of this function is a tree_node called VALUE_TREE of type | |
14034 | ARRAY_NOTATION_REF. */ | |
14035 | ||
14036 | static tree | |
14037 | c_parser_array_notation (location_t loc, c_parser *parser, tree initial_index, | |
14038 | tree array_value) | |
14039 | { | |
14040 | c_token *token = NULL; | |
14041 | tree start_index = NULL_TREE, end_index = NULL_TREE, stride = NULL_TREE; | |
14042 | tree value_tree = NULL_TREE, type = NULL_TREE, array_type = NULL_TREE; | |
14043 | tree array_type_domain = NULL_TREE; | |
14044 | ||
14045 | if (array_value == error_mark_node) | |
14046 | { | |
14047 | /* No need to continue. If either of these 2 were true, then an error | |
14048 | must be emitted already. Thus, no need to emit them twice. */ | |
14049 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14050 | return error_mark_node; | |
14051 | } | |
14052 | ||
14053 | array_type = TREE_TYPE (array_value); | |
14054 | gcc_assert (array_type); | |
14055 | type = TREE_TYPE (array_type); | |
14056 | token = c_parser_peek_token (parser); | |
14057 | ||
14058 | if (token->type == CPP_EOF) | |
14059 | { | |
14060 | c_parser_error (parser, "expected %<:%> or numeral"); | |
14061 | return value_tree; | |
14062 | } | |
14063 | else if (token->type == CPP_COLON) | |
14064 | { | |
14065 | if (!initial_index) | |
14066 | { | |
14067 | /* If we are here, then we have a case like this A[:]. */ | |
14068 | c_parser_consume_token (parser); | |
14069 | if (TREE_CODE (array_type) == POINTER_TYPE) | |
14070 | { | |
14071 | error_at (loc, "start-index and length fields necessary for " | |
14072 | "using array notations in pointers"); | |
14073 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14074 | return error_mark_node; | |
14075 | } | |
14076 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
14077 | { | |
14078 | error_at (loc, "array notations cannot be used with function " | |
14079 | "type"); | |
14080 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14081 | return error_mark_node; | |
14082 | } | |
36536d79 BI |
14083 | array_type_domain = TYPE_DOMAIN (array_type); |
14084 | ||
14085 | if (!array_type_domain) | |
14086 | { | |
14087 | error_at (loc, "start-index and length fields necessary for " | |
14088 | "using array notations in dimensionless arrays"); | |
14089 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14090 | return error_mark_node; | |
14091 | } | |
14092 | ||
14093 | start_index = TYPE_MINVAL (array_type_domain); | |
14094 | start_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, | |
14095 | start_index); | |
14096 | if (!TYPE_MAXVAL (array_type_domain) | |
14097 | || !TREE_CONSTANT (TYPE_MAXVAL (array_type_domain))) | |
14098 | { | |
14099 | error_at (loc, "start-index and length fields necessary for " | |
14100 | "using array notations in variable-length arrays"); | |
14101 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14102 | return error_mark_node; | |
14103 | } | |
14104 | end_index = TYPE_MAXVAL (array_type_domain); | |
14105 | end_index = fold_build2 (PLUS_EXPR, TREE_TYPE (end_index), | |
14106 | end_index, integer_one_node); | |
14107 | end_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, end_index); | |
14108 | stride = build_int_cst (integer_type_node, 1); | |
14109 | stride = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, stride); | |
14110 | } | |
14111 | else if (initial_index != error_mark_node) | |
14112 | { | |
14113 | /* If we are here, then there should be 2 possibilities: | |
14114 | 1. Array [EXPR : EXPR] | |
14115 | 2. Array [EXPR : EXPR : EXPR] | |
14116 | */ | |
14117 | start_index = initial_index; | |
14118 | ||
14119 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
14120 | { | |
14121 | error_at (loc, "array notations cannot be used with function " | |
14122 | "type"); | |
14123 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14124 | return error_mark_node; | |
14125 | } | |
36536d79 | 14126 | c_parser_consume_token (parser); /* consume the ':' */ |
267bac10 JM |
14127 | struct c_expr ce = c_parser_expression (parser); |
14128 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
14129 | end_index = ce.value; | |
36536d79 BI |
14130 | if (!end_index || end_index == error_mark_node) |
14131 | { | |
14132 | c_parser_skip_to_end_of_block_or_statement (parser); | |
14133 | return error_mark_node; | |
14134 | } | |
14135 | if (c_parser_peek_token (parser)->type == CPP_COLON) | |
14136 | { | |
14137 | c_parser_consume_token (parser); | |
267bac10 JM |
14138 | ce = c_parser_expression (parser); |
14139 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
14140 | stride = ce.value; | |
36536d79 BI |
14141 | if (!stride || stride == error_mark_node) |
14142 | { | |
14143 | c_parser_skip_to_end_of_block_or_statement (parser); | |
14144 | return error_mark_node; | |
14145 | } | |
14146 | } | |
14147 | } | |
14148 | else | |
14149 | c_parser_error (parser, "expected array notation expression"); | |
14150 | } | |
14151 | else | |
14152 | c_parser_error (parser, "expected array notation expression"); | |
14153 | ||
14154 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
14155 | ||
14156 | value_tree = build_array_notation_ref (loc, array_value, start_index, | |
14157 | end_index, stride, type); | |
14158 | if (value_tree != error_mark_node) | |
14159 | SET_EXPR_LOCATION (value_tree, loc); | |
14160 | return value_tree; | |
14161 | } | |
14162 | ||
d4a10d0a | 14163 | #include "gt-c-c-parser.h" |