1 /* Parser for C and Objective-C.
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 Parser actions based on the old Bison parser; structure somewhat
6 influenced by and fragments based on the C++ parser.
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify it under
11 the terms of the GNU General Public License as published by the Free
12 Software Foundation; either version 2, or (at your option) any later
15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
27 Make sure all relevant comments, and all relevant code from all
28 actions, brought over from old parser. Verify exact correspondence
31 Add testcases covering every input symbol in every state in old and
34 Include full syntax for GNU C, including erroneous cases accepted
35 with error messages, in syntax productions in comments.
37 Make more diagnostics in the front end generally take an explicit
38 location rather than implicitly using input_location. */
42 #include "coretypes.h"
46 #include "langhooks.h"
62 /* Miscellaneous data and functions needed for the parser. */
66 /* Objective-C specific parser/lexer information. */
68 static int objc_pq_context = 0;
70 /* The following flag is needed to contextualize Objective-C lexical
71 analysis. In some cases (e.g., 'int NSObject;'), it is undesirable
72 to bind an identifier to an Objective-C class, even if a class with
74 static int objc_need_raw_identifier = 0;
75 #define OBJC_NEED_RAW_IDENTIFIER(VAL) \
77 if (c_dialect_objc ()) \
78 objc_need_raw_identifier = VAL; \
81 /* The reserved keyword table. */
85 ENUM_BITFIELD(rid) rid : 16;
86 unsigned int disable : 16;
89 /* Disable mask. Keywords are disabled if (reswords[i].disable &
91 #define D_C89 0x01 /* not in C89 */
92 #define D_EXT 0x02 /* GCC extension */
93 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
94 #define D_OBJC 0x08 /* Objective C only */
96 static const struct resword reswords[] =
98 { "_Bool", RID_BOOL, 0 },
99 { "_Complex", RID_COMPLEX, 0 },
100 { "_Decimal32", RID_DFLOAT32, D_EXT },
101 { "_Decimal64", RID_DFLOAT64, D_EXT },
102 { "_Decimal128", RID_DFLOAT128, D_EXT },
103 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
104 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
105 { "__alignof", RID_ALIGNOF, 0 },
106 { "__alignof__", RID_ALIGNOF, 0 },
107 { "__asm", RID_ASM, 0 },
108 { "__asm__", RID_ASM, 0 },
109 { "__attribute", RID_ATTRIBUTE, 0 },
110 { "__attribute__", RID_ATTRIBUTE, 0 },
111 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
112 { "__builtin_offsetof", RID_OFFSETOF, 0 },
113 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
114 { "__builtin_va_arg", RID_VA_ARG, 0 },
115 { "__complex", RID_COMPLEX, 0 },
116 { "__complex__", RID_COMPLEX, 0 },
117 { "__const", RID_CONST, 0 },
118 { "__const__", RID_CONST, 0 },
119 { "__extension__", RID_EXTENSION, 0 },
120 { "__func__", RID_C99_FUNCTION_NAME, 0 },
121 { "__imag", RID_IMAGPART, 0 },
122 { "__imag__", RID_IMAGPART, 0 },
123 { "__inline", RID_INLINE, 0 },
124 { "__inline__", RID_INLINE, 0 },
125 { "__label__", RID_LABEL, 0 },
126 { "__real", RID_REALPART, 0 },
127 { "__real__", RID_REALPART, 0 },
128 { "__restrict", RID_RESTRICT, 0 },
129 { "__restrict__", RID_RESTRICT, 0 },
130 { "__signed", RID_SIGNED, 0 },
131 { "__signed__", RID_SIGNED, 0 },
132 { "__thread", RID_THREAD, 0 },
133 { "__typeof", RID_TYPEOF, 0 },
134 { "__typeof__", RID_TYPEOF, 0 },
135 { "__volatile", RID_VOLATILE, 0 },
136 { "__volatile__", RID_VOLATILE, 0 },
137 { "asm", RID_ASM, D_EXT },
138 { "auto", RID_AUTO, 0 },
139 { "break", RID_BREAK, 0 },
140 { "case", RID_CASE, 0 },
141 { "char", RID_CHAR, 0 },
142 { "const", RID_CONST, 0 },
143 { "continue", RID_CONTINUE, 0 },
144 { "default", RID_DEFAULT, 0 },
146 { "double", RID_DOUBLE, 0 },
147 { "else", RID_ELSE, 0 },
148 { "enum", RID_ENUM, 0 },
149 { "extern", RID_EXTERN, 0 },
150 { "float", RID_FLOAT, 0 },
151 { "for", RID_FOR, 0 },
152 { "goto", RID_GOTO, 0 },
154 { "inline", RID_INLINE, D_EXT89 },
155 { "int", RID_INT, 0 },
156 { "long", RID_LONG, 0 },
157 { "register", RID_REGISTER, 0 },
158 { "restrict", RID_RESTRICT, D_C89 },
159 { "return", RID_RETURN, 0 },
160 { "short", RID_SHORT, 0 },
161 { "signed", RID_SIGNED, 0 },
162 { "sizeof", RID_SIZEOF, 0 },
163 { "static", RID_STATIC, 0 },
164 { "struct", RID_STRUCT, 0 },
165 { "switch", RID_SWITCH, 0 },
166 { "typedef", RID_TYPEDEF, 0 },
167 { "typeof", RID_TYPEOF, D_EXT },
168 { "union", RID_UNION, 0 },
169 { "unsigned", RID_UNSIGNED, 0 },
170 { "void", RID_VOID, 0 },
171 { "volatile", RID_VOLATILE, 0 },
172 { "while", RID_WHILE, 0 },
173 /* These Objective-C keywords are recognized only immediately after
175 { "class", RID_AT_CLASS, D_OBJC },
176 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
177 { "defs", RID_AT_DEFS, D_OBJC },
178 { "encode", RID_AT_ENCODE, D_OBJC },
179 { "end", RID_AT_END, D_OBJC },
180 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
181 { "interface", RID_AT_INTERFACE, D_OBJC },
182 { "private", RID_AT_PRIVATE, D_OBJC },
183 { "protected", RID_AT_PROTECTED, D_OBJC },
184 { "protocol", RID_AT_PROTOCOL, D_OBJC },
185 { "public", RID_AT_PUBLIC, D_OBJC },
186 { "selector", RID_AT_SELECTOR, D_OBJC },
187 { "throw", RID_AT_THROW, D_OBJC },
188 { "try", RID_AT_TRY, D_OBJC },
189 { "catch", RID_AT_CATCH, D_OBJC },
190 { "finally", RID_AT_FINALLY, D_OBJC },
191 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
192 /* These are recognized only in protocol-qualifier context
194 { "bycopy", RID_BYCOPY, D_OBJC },
195 { "byref", RID_BYREF, D_OBJC },
196 { "in", RID_IN, D_OBJC },
197 { "inout", RID_INOUT, D_OBJC },
198 { "oneway", RID_ONEWAY, D_OBJC },
199 { "out", RID_OUT, D_OBJC },
201 #define N_reswords (sizeof reswords / sizeof (struct resword))
203 /* All OpenMP clauses. OpenMP 2.5. */
204 typedef enum pragma_omp_clause {
205 PRAGMA_OMP_CLAUSE_NONE = 0,
207 PRAGMA_OMP_CLAUSE_COPYIN,
208 PRAGMA_OMP_CLAUSE_COPYPRIVATE,
209 PRAGMA_OMP_CLAUSE_DEFAULT,
210 PRAGMA_OMP_CLAUSE_FIRSTPRIVATE,
211 PRAGMA_OMP_CLAUSE_IF,
212 PRAGMA_OMP_CLAUSE_LASTPRIVATE,
213 PRAGMA_OMP_CLAUSE_NOWAIT,
214 PRAGMA_OMP_CLAUSE_NUM_THREADS,
215 PRAGMA_OMP_CLAUSE_ORDERED,
216 PRAGMA_OMP_CLAUSE_PRIVATE,
217 PRAGMA_OMP_CLAUSE_REDUCTION,
218 PRAGMA_OMP_CLAUSE_SCHEDULE,
219 PRAGMA_OMP_CLAUSE_SHARED
223 /* Initialization routine for this file. */
228 /* The only initialization required is of the reserved word
232 int mask = (flag_isoc99 ? 0 : D_C89)
233 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
235 if (!c_dialect_objc ())
238 ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
239 for (i = 0; i < N_reswords; i++)
241 /* If a keyword is disabled, do not enter it into the table
242 and so create a canonical spelling that isn't a keyword. */
243 if (reswords[i].disable & mask)
246 id = get_identifier (reswords[i].word);
247 C_RID_CODE (id) = reswords[i].rid;
248 C_IS_RESERVED_WORD (id) = 1;
249 ridpointers [(int) reswords[i].rid] = id;
253 /* The C lexer intermediates between the lexer in cpplib and c-lex.c
254 and the C parser. Unlike the C++ lexer, the parser structure
255 stores the lexer information instead of using a separate structure.
256 Identifiers are separated into ordinary identifiers, type names,
257 keywords and some other Objective-C types of identifiers, and some
258 look-ahead is maintained.
260 ??? It might be a good idea to lex the whole file up front (as for
261 C++). It would then be possible to share more of the C and C++
262 lexer code, if desired. */
264 /* The following local token type is used. */
267 #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1))
269 /* More information about the type of a CPP_NAME token. */
270 typedef enum c_id_kind {
271 /* An ordinary identifier. */
273 /* An identifier declared as a typedef name. */
275 /* An identifier declared as an Objective-C class name. */
277 /* Not an identifier. */
281 /* A single C token after string literal concatenation and conversion
282 of preprocessing tokens to tokens. */
283 typedef struct c_token GTY (())
285 /* The kind of token. */
286 ENUM_BITFIELD (cpp_ttype) type : 8;
287 /* If this token is a CPP_NAME, this value indicates whether also
288 declared as some kind of type. Otherwise, it is C_ID_NONE. */
289 ENUM_BITFIELD (c_id_kind) id_kind : 8;
290 /* If this token is a keyword, this value indicates which keyword.
291 Otherwise, this value is RID_MAX. */
292 ENUM_BITFIELD (rid) keyword : 8;
293 /* If this token is a CPP_PRAGMA, this indicates the pragma that
294 was seen. Otherwise it is PRAGMA_NONE. */
295 ENUM_BITFIELD (pragma_kind) pragma_kind : 7;
296 /* True if this token is from a system header. */
297 BOOL_BITFIELD in_system_header : 1;
298 /* The value associated with this token, if any. */
300 /* The location at which this token was found. */
304 /* A parser structure recording information about the state and
305 context of parsing. Includes lexer information with up to two
306 tokens of look-ahead; more are not needed for C. */
307 typedef struct c_parser GTY(())
309 /* The look-ahead tokens. */
311 /* How many look-ahead tokens are available (0, 1 or 2). */
313 /* True if a syntax error is being recovered from; false otherwise.
314 c_parser_error sets this flag. It should clear this flag when
315 enough tokens have been consumed to recover from the error. */
316 BOOL_BITFIELD error : 1;
317 /* True if we're processing a pragma, and shouldn't automatically
318 consume CPP_PRAGMA_EOL. */
319 BOOL_BITFIELD in_pragma : 1;
323 /* The actual parser and external interface. ??? Does this need to be
324 garbage-collected? */
326 static GTY (()) c_parser *the_parser;
329 /* Read in and lex a single token, storing it in *TOKEN. */
332 c_lex_one_token (c_token *token)
334 timevar_push (TV_LEX);
336 token->type = c_lex_with_flags (&token->value, &token->location, NULL);
337 token->id_kind = C_ID_NONE;
338 token->keyword = RID_MAX;
339 token->pragma_kind = PRAGMA_NONE;
340 token->in_system_header = in_system_header;
348 int objc_force_identifier = objc_need_raw_identifier;
349 OBJC_NEED_RAW_IDENTIFIER (0);
351 if (C_IS_RESERVED_WORD (token->value))
353 enum rid rid_code = C_RID_CODE (token->value);
355 if (c_dialect_objc ())
357 if (!OBJC_IS_AT_KEYWORD (rid_code)
358 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
360 /* Return the canonical spelling for this keyword. */
361 token->value = ridpointers[(int) rid_code];
362 token->type = CPP_KEYWORD;
363 token->keyword = rid_code;
369 /* Return the canonical spelling for this keyword. */
370 token->value = ridpointers[(int) rid_code];
371 token->type = CPP_KEYWORD;
372 token->keyword = rid_code;
377 decl = lookup_name (token->value);
380 if (TREE_CODE (decl) == TYPE_DECL)
382 token->id_kind = C_ID_TYPENAME;
386 else if (c_dialect_objc ())
388 tree objc_interface_decl = objc_is_class_name (token->value);
389 /* Objective-C class names are in the same namespace as
390 variables and typedefs, and hence are shadowed by local
392 if (objc_interface_decl
393 && (global_bindings_p ()
394 || (!objc_force_identifier && !decl)))
396 token->value = objc_interface_decl;
397 token->id_kind = C_ID_CLASSNAME;
401 token->id_kind = C_ID_ID;
405 /* This only happens in Objective-C; it must be a keyword. */
406 token->type = CPP_KEYWORD;
407 token->keyword = C_RID_CODE (token->value);
411 case CPP_CLOSE_PAREN:
413 /* These tokens may affect the interpretation of any identifiers
414 following, if doing Objective-C. */
415 OBJC_NEED_RAW_IDENTIFIER (0);
418 /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */
419 token->pragma_kind = TREE_INT_CST_LOW (token->value);
425 timevar_pop (TV_LEX);
428 /* Return a pointer to the next token from PARSER, reading it in if
431 static inline c_token *
432 c_parser_peek_token (c_parser *parser)
434 if (parser->tokens_avail == 0)
436 c_lex_one_token (&parser->tokens[0]);
437 parser->tokens_avail = 1;
439 return &parser->tokens[0];
442 /* Return true if the next token from PARSER has the indicated
446 c_parser_next_token_is (c_parser *parser, enum cpp_ttype type)
448 return c_parser_peek_token (parser)->type == type;
451 /* Return true if the next token from PARSER does not have the
455 c_parser_next_token_is_not (c_parser *parser, enum cpp_ttype type)
457 return !c_parser_next_token_is (parser, type);
460 /* Return true if the next token from PARSER is the indicated
464 c_parser_next_token_is_keyword (c_parser *parser, enum rid keyword)
468 /* Peek at the next token. */
469 token = c_parser_peek_token (parser);
470 /* Check to see if it is the indicated keyword. */
471 return token->keyword == keyword;
474 /* Return true if TOKEN can start a type name,
477 c_token_starts_typename (c_token *token)
482 switch (token->id_kind)
489 gcc_assert (c_dialect_objc ());
495 switch (token->keyword)
524 if (c_dialect_objc ())
532 /* Return true if the next token from PARSER can start a type name,
535 c_parser_next_token_starts_typename (c_parser *parser)
537 c_token *token = c_parser_peek_token (parser);
538 return c_token_starts_typename (token);
541 /* Return true if TOKEN can start declaration specifiers, false
544 c_token_starts_declspecs (c_token *token)
549 switch (token->id_kind)
556 gcc_assert (c_dialect_objc ());
562 switch (token->keyword)
598 if (c_dialect_objc ())
606 /* Return true if the next token from PARSER can start declaration
607 specifiers, false otherwise. */
609 c_parser_next_token_starts_declspecs (c_parser *parser)
611 c_token *token = c_parser_peek_token (parser);
612 return c_token_starts_declspecs (token);
615 /* Return a pointer to the next-but-one token from PARSER, reading it
616 in if necessary. The next token is already read in. */
619 c_parser_peek_2nd_token (c_parser *parser)
621 if (parser->tokens_avail >= 2)
622 return &parser->tokens[1];
623 gcc_assert (parser->tokens_avail == 1);
624 gcc_assert (parser->tokens[0].type != CPP_EOF);
625 gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL);
626 c_lex_one_token (&parser->tokens[1]);
627 parser->tokens_avail = 2;
628 return &parser->tokens[1];
631 /* Consume the next token from PARSER. */
634 c_parser_consume_token (c_parser *parser)
636 gcc_assert (parser->tokens_avail >= 1);
637 gcc_assert (parser->tokens[0].type != CPP_EOF);
638 gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL);
639 gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA);
640 if (parser->tokens_avail == 2)
641 parser->tokens[0] = parser->tokens[1];
642 parser->tokens_avail--;
645 /* Expect the current token to be a #pragma. Consume it and remember
646 that we've begun parsing a pragma. */
649 c_parser_consume_pragma (c_parser *parser)
651 gcc_assert (!parser->in_pragma);
652 gcc_assert (parser->tokens_avail >= 1);
653 gcc_assert (parser->tokens[0].type == CPP_PRAGMA);
654 if (parser->tokens_avail == 2)
655 parser->tokens[0] = parser->tokens[1];
656 parser->tokens_avail--;
657 parser->in_pragma = true;
660 /* Update the globals input_location and in_system_header from
663 c_parser_set_source_position_from_token (c_token *token)
665 if (token->type != CPP_EOF)
667 input_location = token->location;
668 in_system_header = token->in_system_header;
672 /* Issue a diagnostic of the form
673 FILE:LINE: MESSAGE before TOKEN
674 where TOKEN is the next token in the input stream of PARSER.
675 MESSAGE (specified by the caller) is usually of the form "expected
678 Do not issue a diagnostic if still recovering from an error.
680 ??? This is taken from the C++ parser, but building up messages in
681 this way is not i18n-friendly and some other approach should be
685 c_parser_error (c_parser *parser, const char *gmsgid)
687 c_token *token = c_parser_peek_token (parser);
690 parser->error = true;
693 /* This diagnostic makes more sense if it is tagged to the line of
694 the token we just peeked at. */
695 c_parser_set_source_position_from_token (token);
696 c_parse_error (gmsgid,
697 /* Because c_parse_error does not understand
698 CPP_KEYWORD, keywords are treated like
700 (token->type == CPP_KEYWORD ? CPP_NAME : token->type),
704 /* If the next token is of the indicated TYPE, consume it. Otherwise,
705 issue the error MSGID. If MSGID is NULL then a message has already
706 been produced and no message will be produced this time. Returns
707 true if found, false otherwise. */
710 c_parser_require (c_parser *parser,
714 if (c_parser_next_token_is (parser, type))
716 c_parser_consume_token (parser);
721 c_parser_error (parser, msgid);
726 /* If the next token is the indicated keyword, consume it. Otherwise,
727 issue the error MSGID. Returns true if found, false otherwise. */
730 c_parser_require_keyword (c_parser *parser,
734 if (c_parser_next_token_is_keyword (parser, keyword))
736 c_parser_consume_token (parser);
741 c_parser_error (parser, msgid);
746 /* Like c_parser_require, except that tokens will be skipped until the
747 desired token is found. An error message is still produced if the
748 next token is not as expected. If MSGID is NULL then a message has
749 already been produced and no message will be produced this
753 c_parser_skip_until_found (c_parser *parser,
757 unsigned nesting_depth = 0;
759 if (c_parser_require (parser, type, msgid))
762 /* Skip tokens until the desired token is found. */
765 /* Peek at the next token. */
766 c_token *token = c_parser_peek_token (parser);
767 /* If we've reached the token we want, consume it and stop. */
768 if (token->type == type && !nesting_depth)
770 c_parser_consume_token (parser);
774 /* If we've run out of tokens, stop. */
775 if (token->type == CPP_EOF)
777 if (token->type == CPP_PRAGMA_EOL && parser->in_pragma)
779 if (token->type == CPP_OPEN_BRACE
780 || token->type == CPP_OPEN_PAREN
781 || token->type == CPP_OPEN_SQUARE)
783 else if (token->type == CPP_CLOSE_BRACE
784 || token->type == CPP_CLOSE_PAREN
785 || token->type == CPP_CLOSE_SQUARE)
787 if (nesting_depth-- == 0)
790 /* Consume this token. */
791 c_parser_consume_token (parser);
793 parser->error = false;
796 /* Skip tokens until the end of a parameter is found, but do not
797 consume the comma, semicolon or closing delimiter. */
800 c_parser_skip_to_end_of_parameter (c_parser *parser)
802 unsigned nesting_depth = 0;
806 c_token *token = c_parser_peek_token (parser);
807 if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON)
810 /* If we've run out of tokens, stop. */
811 if (token->type == CPP_EOF)
813 if (token->type == CPP_PRAGMA_EOL && parser->in_pragma)
815 if (token->type == CPP_OPEN_BRACE
816 || token->type == CPP_OPEN_PAREN
817 || token->type == CPP_OPEN_SQUARE)
819 else if (token->type == CPP_CLOSE_BRACE
820 || token->type == CPP_CLOSE_PAREN
821 || token->type == CPP_CLOSE_SQUARE)
823 if (nesting_depth-- == 0)
826 /* Consume this token. */
827 c_parser_consume_token (parser);
829 parser->error = false;
832 /* Expect to be at the end of the pragma directive and consume an
833 end of line marker. */
836 c_parser_skip_to_pragma_eol (c_parser *parser)
838 gcc_assert (parser->in_pragma);
839 parser->in_pragma = false;
841 if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line"))
844 c_token *token = c_parser_peek_token (parser);
845 if (token->type == CPP_EOF)
847 if (token->type == CPP_PRAGMA_EOL)
849 c_parser_consume_token (parser);
852 c_parser_consume_token (parser);
855 parser->error = false;
858 /* Skip tokens until we have consumed an entire block, or until we
859 have consumed a non-nested ';'. */
862 c_parser_skip_to_end_of_block_or_statement (c_parser *parser)
864 unsigned nesting_depth = 0;
865 bool save_error = parser->error;
871 /* Peek at the next token. */
872 token = c_parser_peek_token (parser);
880 if (parser->in_pragma)
885 /* If the next token is a ';', we have reached the
886 end of the statement. */
889 /* Consume the ';'. */
890 c_parser_consume_token (parser);
895 case CPP_CLOSE_BRACE:
896 /* If the next token is a non-nested '}', then we have
897 reached the end of the current block. */
898 if (nesting_depth == 0 || --nesting_depth == 0)
900 c_parser_consume_token (parser);
906 /* If it the next token is a '{', then we are entering a new
907 block. Consume the entire block. */
912 /* If we see a pragma, consume the whole thing at once. We
913 have some safeguards against consuming pragmas willy-nilly.
914 Normally, we'd expect to be here with parser->error set,
915 which disables these safeguards. But it's possible to get
916 here for secondary error recovery, after parser->error has
918 c_parser_consume_pragma (parser);
919 c_parser_skip_to_pragma_eol (parser);
920 parser->error = save_error;
927 c_parser_consume_token (parser);
931 parser->error = false;
934 /* Save the warning flags which are controlled by __extension__. */
937 disable_extension_diagnostics (void)
940 | (warn_pointer_arith << 1)
941 | (warn_traditional << 2)
944 warn_pointer_arith = 0;
945 warn_traditional = 0;
950 /* Restore the warning flags which are controlled by __extension__.
951 FLAGS is the return value from disable_extension_diagnostics. */
954 restore_extension_diagnostics (int flags)
956 pedantic = flags & 1;
957 warn_pointer_arith = (flags >> 1) & 1;
958 warn_traditional = (flags >> 2) & 1;
959 flag_iso = (flags >> 3) & 1;
962 /* Possibly kinds of declarator to parse. */
963 typedef enum c_dtr_syn {
964 /* A normal declarator with an identifier. */
966 /* An abstract declarator (maybe empty). */
968 /* A parameter declarator: may be either, but after a type name does
969 not redeclare a typedef name as an identifier if it can
970 alternatively be interpreted as a typedef name; see DR#009,
971 applied in C90 TC1, omitted from C99 and reapplied in C99 TC2
972 following DR#249. For example, given a typedef T, "int T" and
973 "int *T" are valid parameter declarations redeclaring T, while
974 "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are
975 abstract declarators rather than involving redundant parentheses;
976 the same applies with attributes inside the parentheses before
981 static void c_parser_external_declaration (c_parser *);
982 static void c_parser_asm_definition (c_parser *);
983 static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, bool);
984 static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool,
986 static struct c_typespec c_parser_enum_specifier (c_parser *);
987 static struct c_typespec c_parser_struct_or_union_specifier (c_parser *);
988 static tree c_parser_struct_declaration (c_parser *);
989 static struct c_typespec c_parser_typeof_specifier (c_parser *);
990 static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn,
992 static struct c_declarator *c_parser_direct_declarator (c_parser *, bool,
994 static struct c_declarator *c_parser_direct_declarator_inner (c_parser *,
996 struct c_declarator *);
997 static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree);
998 static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree);
999 static struct c_parm *c_parser_parameter_declaration (c_parser *, tree);
1000 static tree c_parser_simple_asm_expr (c_parser *);
1001 static tree c_parser_attributes (c_parser *);
1002 static struct c_type_name *c_parser_type_name (c_parser *);
1003 static struct c_expr c_parser_initializer (c_parser *);
1004 static struct c_expr c_parser_braced_init (c_parser *, tree, bool);
1005 static void c_parser_initelt (c_parser *);
1006 static void c_parser_initval (c_parser *, struct c_expr *);
1007 static tree c_parser_compound_statement (c_parser *);
1008 static void c_parser_compound_statement_nostart (c_parser *);
1009 static void c_parser_label (c_parser *);
1010 static void c_parser_statement (c_parser *);
1011 static void c_parser_statement_after_labels (c_parser *);
1012 static void c_parser_if_statement (c_parser *);
1013 static void c_parser_switch_statement (c_parser *);
1014 static void c_parser_while_statement (c_parser *);
1015 static void c_parser_do_statement (c_parser *);
1016 static void c_parser_for_statement (c_parser *);
1017 static tree c_parser_asm_statement (c_parser *);
1018 static tree c_parser_asm_operands (c_parser *, bool);
1019 static tree c_parser_asm_clobbers (c_parser *);
1020 static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *);
1021 static struct c_expr c_parser_conditional_expression (c_parser *,
1023 static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *);
1024 static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *);
1025 static struct c_expr c_parser_unary_expression (c_parser *);
1026 static struct c_expr c_parser_sizeof_expression (c_parser *);
1027 static struct c_expr c_parser_alignof_expression (c_parser *);
1028 static struct c_expr c_parser_postfix_expression (c_parser *);
1029 static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *,
1030 struct c_type_name *);
1031 static struct c_expr c_parser_postfix_expression_after_primary (c_parser *,
1033 static struct c_expr c_parser_expression (c_parser *);
1034 static struct c_expr c_parser_expression_conv (c_parser *);
1035 static tree c_parser_expr_list (c_parser *, bool);
1036 static void c_parser_omp_construct (c_parser *);
1037 static void c_parser_omp_threadprivate (c_parser *);
1038 static void c_parser_omp_barrier (c_parser *);
1039 static void c_parser_omp_flush (c_parser *);
1041 enum pragma_context { pragma_external, pragma_stmt, pragma_compound };
1042 static bool c_parser_pragma (c_parser *, enum pragma_context);
1044 /* These Objective-C parser functions are only ever called when
1045 compiling Objective-C. */
1046 static void c_parser_objc_class_definition (c_parser *);
1047 static void c_parser_objc_class_instance_variables (c_parser *);
1048 static void c_parser_objc_class_declaration (c_parser *);
1049 static void c_parser_objc_alias_declaration (c_parser *);
1050 static void c_parser_objc_protocol_definition (c_parser *);
1051 static enum tree_code c_parser_objc_method_type (c_parser *);
1052 static void c_parser_objc_method_definition (c_parser *);
1053 static void c_parser_objc_methodprotolist (c_parser *);
1054 static void c_parser_objc_methodproto (c_parser *);
1055 static tree c_parser_objc_method_decl (c_parser *);
1056 static tree c_parser_objc_type_name (c_parser *);
1057 static tree c_parser_objc_protocol_refs (c_parser *);
1058 static void c_parser_objc_try_catch_statement (c_parser *);
1059 static void c_parser_objc_synchronized_statement (c_parser *);
1060 static tree c_parser_objc_selector (c_parser *);
1061 static tree c_parser_objc_selector_arg (c_parser *);
1062 static tree c_parser_objc_receiver (c_parser *);
1063 static tree c_parser_objc_message_args (c_parser *);
1064 static tree c_parser_objc_keywordexpr (c_parser *);
1066 /* Parse a translation unit (C90 6.7, C99 6.9).
1069 external-declarations
1071 external-declarations:
1072 external-declaration
1073 external-declarations external-declaration
1082 c_parser_translation_unit (c_parser *parser)
1084 if (c_parser_next_token_is (parser, CPP_EOF))
1087 pedwarn ("ISO C forbids an empty source file");
1091 void *obstack_position = obstack_alloc (&parser_obstack, 0);
1095 c_parser_external_declaration (parser);
1096 obstack_free (&parser_obstack, obstack_position);
1098 while (c_parser_next_token_is_not (parser, CPP_EOF));
1102 /* Parse an external declaration (C90 6.7, C99 6.9).
1104 external-declaration:
1110 external-declaration:
1113 __extension__ external-declaration
1117 external-declaration:
1118 objc-class-definition
1119 objc-class-declaration
1120 objc-alias-declaration
1121 objc-protocol-definition
1122 objc-method-definition
1127 c_parser_external_declaration (c_parser *parser)
1130 switch (c_parser_peek_token (parser)->type)
1133 switch (c_parser_peek_token (parser)->keyword)
1136 ext = disable_extension_diagnostics ();
1137 c_parser_consume_token (parser);
1138 c_parser_external_declaration (parser);
1139 restore_extension_diagnostics (ext);
1142 c_parser_asm_definition (parser);
1144 case RID_AT_INTERFACE:
1145 case RID_AT_IMPLEMENTATION:
1146 gcc_assert (c_dialect_objc ());
1147 c_parser_objc_class_definition (parser);
1150 gcc_assert (c_dialect_objc ());
1151 c_parser_objc_class_declaration (parser);
1154 gcc_assert (c_dialect_objc ());
1155 c_parser_objc_alias_declaration (parser);
1157 case RID_AT_PROTOCOL:
1158 gcc_assert (c_dialect_objc ());
1159 c_parser_objc_protocol_definition (parser);
1162 gcc_assert (c_dialect_objc ());
1163 c_parser_consume_token (parser);
1164 objc_finish_implementation ();
1172 pedwarn ("ISO C does not allow extra %<;%> outside of a function");
1173 c_parser_consume_token (parser);
1176 c_parser_pragma (parser, pragma_external);
1180 if (c_dialect_objc ())
1182 c_parser_objc_method_definition (parser);
1185 /* Else fall through, and yield a syntax error trying to parse
1186 as a declaration or function definition. */
1189 /* A declaration or a function definition. We can only tell
1190 which after parsing the declaration specifiers, if any, and
1191 the first declarator. */
1192 c_parser_declaration_or_fndef (parser, true, true, false, true);
1198 /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99
1199 6.7, 6.9.1). If FNDEF_OK is true, a function definition is
1200 accepted; otherwise (old-style parameter declarations) only other
1201 declarations are accepted. If NESTED is true, we are inside a
1202 function or parsing old-style parameter declarations; any functions
1203 encountered are nested functions and declaration specifiers are
1204 required; otherwise we are at top level and functions are normal
1205 functions and declaration specifiers may be optional. If EMPTY_OK
1206 is true, empty declarations are OK (subject to all other
1207 constraints); otherwise (old-style parameter declarations) they are
1208 diagnosed. If START_ATTR_OK is true, the declaration specifiers
1209 may start with attributes; otherwise they may not.
1212 declaration-specifiers init-declarator-list[opt] ;
1214 function-definition:
1215 declaration-specifiers[opt] declarator declaration-list[opt]
1220 declaration-list declaration
1222 init-declarator-list:
1224 init-declarator-list , init-declarator
1227 declarator simple-asm-expr[opt] attributes[opt]
1228 declarator simple-asm-expr[opt] attributes[opt] = initializer
1232 nested-function-definition:
1233 declaration-specifiers declarator declaration-list[opt]
1236 The simple-asm-expr and attributes are GNU extensions.
1238 This function does not handle __extension__; that is handled in its
1239 callers. ??? Following the old parser, __extension__ may start
1240 external declarations, declarations in functions and declarations
1241 at the start of "for" loops, but not old-style parameter
1244 C99 requires declaration specifiers in a function definition; the
1245 absence is diagnosed through the diagnosis of implicit int. In GNU
1246 C we also allow but diagnose declarations without declaration
1247 specifiers, but only at top level (elsewhere they conflict with
1253 threadprivate-directive */
1256 c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, bool empty_ok,
1257 bool nested, bool start_attr_ok)
1259 struct c_declspecs *specs;
1261 tree all_prefix_attrs;
1262 bool diagnosed_no_specs = false;
1264 specs = build_null_declspecs ();
1265 c_parser_declspecs (parser, specs, true, true, start_attr_ok);
1268 c_parser_skip_to_end_of_block_or_statement (parser);
1271 if (nested && !specs->declspecs_seen_p)
1273 c_parser_error (parser, "expected declaration specifiers");
1274 c_parser_skip_to_end_of_block_or_statement (parser);
1277 finish_declspecs (specs);
1278 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
1284 shadow_tag_warned (specs, 1);
1285 pedwarn ("empty declaration");
1287 c_parser_consume_token (parser);
1290 pending_xref_error ();
1291 prefix_attrs = specs->attrs;
1292 all_prefix_attrs = prefix_attrs;
1293 specs->attrs = NULL_TREE;
1296 struct c_declarator *declarator;
1299 /* Declaring either one or more declarators (in which case we
1300 should diagnose if there were no declaration specifiers) or a
1301 function definition (in which case the diagnostic for
1302 implicit int suffices). */
1303 declarator = c_parser_declarator (parser, specs->type_seen_p,
1304 C_DTR_NORMAL, &dummy);
1305 if (declarator == NULL)
1307 c_parser_skip_to_end_of_block_or_statement (parser);
1310 if (c_parser_next_token_is (parser, CPP_EQ)
1311 || c_parser_next_token_is (parser, CPP_COMMA)
1312 || c_parser_next_token_is (parser, CPP_SEMICOLON)
1313 || c_parser_next_token_is_keyword (parser, RID_ASM)
1314 || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
1316 tree asm_name = NULL_TREE;
1317 tree postfix_attrs = NULL_TREE;
1318 if (!diagnosed_no_specs && !specs->declspecs_seen_p)
1320 diagnosed_no_specs = true;
1321 pedwarn ("data definition has no type or storage class");
1323 /* Having seen a data definition, there cannot now be a
1324 function definition. */
1326 if (c_parser_next_token_is_keyword (parser, RID_ASM))
1327 asm_name = c_parser_simple_asm_expr (parser);
1328 if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
1329 postfix_attrs = c_parser_attributes (parser);
1330 if (c_parser_next_token_is (parser, CPP_EQ))
1334 c_parser_consume_token (parser);
1335 /* The declaration of the variable is in effect while
1336 its initializer is parsed. */
1337 d = start_decl (declarator, specs, true,
1338 chainon (postfix_attrs, all_prefix_attrs));
1340 d = error_mark_node;
1341 start_init (d, asm_name, global_bindings_p ());
1342 init = c_parser_initializer (parser);
1344 if (d != error_mark_node)
1346 maybe_warn_string_init (TREE_TYPE (d), init);
1347 finish_decl (d, init.value, asm_name);
1352 tree d = start_decl (declarator, specs, false,
1353 chainon (postfix_attrs,
1356 finish_decl (d, NULL_TREE, asm_name);
1358 if (c_parser_next_token_is (parser, CPP_COMMA))
1360 c_parser_consume_token (parser);
1361 if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
1362 all_prefix_attrs = chainon (c_parser_attributes (parser),
1365 all_prefix_attrs = prefix_attrs;
1368 else if (c_parser_next_token_is (parser, CPP_SEMICOLON))
1370 c_parser_consume_token (parser);
1375 c_parser_error (parser, "expected %<,%> or %<;%>");
1376 c_parser_skip_to_end_of_block_or_statement (parser);
1382 c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, "
1383 "%<asm%> or %<__attribute__%>");
1384 c_parser_skip_to_end_of_block_or_statement (parser);
1387 /* Function definition (nested or otherwise). */
1391 pedwarn ("ISO C forbids nested functions");
1392 push_function_context ();
1394 if (!start_function (specs, declarator, all_prefix_attrs))
1396 /* This can appear in many cases looking nothing like a
1397 function definition, so we don't give a more specific
1398 error suggesting there was one. */
1399 c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> "
1400 "or %<__attribute__%>");
1402 pop_function_context ();
1405 /* Parse old-style parameter declarations. ??? Attributes are
1406 not allowed to start declaration specifiers here because of a
1407 syntax conflict between a function declaration with attribute
1408 suffix and a function definition with an attribute prefix on
1409 first old-style parameter declaration. Following the old
1410 parser, they are not accepted on subsequent old-style
1411 parameter declarations either. However, there is no
1412 ambiguity after the first declaration, nor indeed on the
1413 first as long as we don't allow postfix attributes after a
1414 declarator with a nonempty identifier list in a definition;
1415 and postfix attributes have never been accepted here in
1416 function definitions either. */
1417 while (c_parser_next_token_is_not (parser, CPP_EOF)
1418 && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE))
1419 c_parser_declaration_or_fndef (parser, false, false, true, false);
1420 DECL_SOURCE_LOCATION (current_function_decl)
1421 = c_parser_peek_token (parser)->location;
1422 store_parm_decls ();
1423 fnbody = c_parser_compound_statement (parser);
1426 tree decl = current_function_decl;
1429 pop_function_context ();
1430 add_stmt (build_stmt (DECL_EXPR, decl));
1441 /* Parse an asm-definition (asm() outside a function body). This is a
1449 c_parser_asm_definition (c_parser *parser)
1451 tree asm_str = c_parser_simple_asm_expr (parser);
1453 cgraph_add_asm_node (asm_str);
1454 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
1457 /* Parse some declaration specifiers (possibly none) (C90 6.5, C99
1458 6.7), adding them to SPECS (which may already include some).
1459 Storage class specifiers are accepted iff SCSPEC_OK; type
1460 specifiers are accepted iff TYPESPEC_OK; attributes are accepted at
1461 the start iff START_ATTR_OK.
1463 declaration-specifiers:
1464 storage-class-specifier declaration-specifiers[opt]
1465 type-specifier declaration-specifiers[opt]
1466 type-qualifier declaration-specifiers[opt]
1467 function-specifier declaration-specifiers[opt]
1469 Function specifiers (inline) are from C99, and are currently
1470 handled as storage class specifiers, as is __thread.
1472 C90 6.5.1, C99 6.7.1:
1473 storage-class-specifier:
1484 C90 6.5.2, C99 6.7.2:
1497 [_Imaginary removed in C99 TC2]
1498 struct-or-union-specifier
1502 (_Bool and _Complex are new in C99.)
1504 C90 6.5.3, C99 6.7.3:
1511 (restrict is new in C99.)
1515 declaration-specifiers:
1516 attributes declaration-specifiers[opt]
1518 storage-class-specifier:
1530 class-name objc-protocol-refs[opt]
1531 typedef-name objc-protocol-refs
1536 c_parser_declspecs (c_parser *parser, struct c_declspecs *specs,
1537 bool scspec_ok, bool typespec_ok, bool start_attr_ok)
1539 bool attrs_ok = start_attr_ok;
1540 bool seen_type = specs->type_seen_p;
1541 while (c_parser_next_token_is (parser, CPP_NAME)
1542 || c_parser_next_token_is (parser, CPP_KEYWORD)
1543 || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS)))
1545 struct c_typespec t;
1547 if (c_parser_next_token_is (parser, CPP_NAME))
1549 tree value = c_parser_peek_token (parser)->value;
1550 c_id_kind kind = c_parser_peek_token (parser)->id_kind;
1551 /* This finishes the specifiers unless a type name is OK, it
1552 is declared as a type name and a type name hasn't yet
1554 if (!typespec_ok || seen_type
1555 || (kind != C_ID_TYPENAME && kind != C_ID_CLASSNAME))
1557 c_parser_consume_token (parser);
1560 if (kind == C_ID_TYPENAME
1561 && (!c_dialect_objc ()
1562 || c_parser_next_token_is_not (parser, CPP_LESS)))
1564 t.kind = ctsk_typedef;
1565 /* For a typedef name, record the meaning, not the name.
1566 In case of 'foo foo, bar;'. */
1567 t.spec = lookup_name (value);
1571 tree proto = NULL_TREE;
1572 gcc_assert (c_dialect_objc ());
1574 if (c_parser_next_token_is (parser, CPP_LESS))
1575 proto = c_parser_objc_protocol_refs (parser);
1576 t.spec = objc_get_protocol_qualified_type (value, proto);
1578 declspecs_add_type (specs, t);
1581 if (c_parser_next_token_is (parser, CPP_LESS))
1583 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" -
1584 nisse@lysator.liu.se. */
1586 gcc_assert (c_dialect_objc ());
1587 if (!typespec_ok || seen_type)
1589 proto = c_parser_objc_protocol_refs (parser);
1591 t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto);
1592 declspecs_add_type (specs, t);
1595 gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD));
1596 switch (c_parser_peek_token (parser)->keyword)
1608 /* TODO: Distinguish between function specifiers (inline)
1609 and storage class specifiers, either here or in
1610 declspecs_add_scspec. */
1611 declspecs_add_scspec (specs, c_parser_peek_token (parser)->value);
1612 c_parser_consume_token (parser);
1632 OBJC_NEED_RAW_IDENTIFIER (1);
1633 t.kind = ctsk_resword;
1634 t.spec = c_parser_peek_token (parser)->value;
1635 declspecs_add_type (specs, t);
1636 c_parser_consume_token (parser);
1643 t = c_parser_enum_specifier (parser);
1644 declspecs_add_type (specs, t);
1652 t = c_parser_struct_or_union_specifier (parser);
1653 declspecs_add_type (specs, t);
1656 /* ??? The old parser rejected typeof after other type
1657 specifiers, but is a syntax error the best way of
1659 if (!typespec_ok || seen_type)
1663 t = c_parser_typeof_specifier (parser);
1664 declspecs_add_type (specs, t);
1670 declspecs_add_qual (specs, c_parser_peek_token (parser)->value);
1671 c_parser_consume_token (parser);
1676 attrs = c_parser_attributes (parser);
1677 declspecs_add_attrs (specs, attrs);
1686 /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2).
1689 enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt]
1690 enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt]
1691 enum attributes[opt] identifier
1693 The form with trailing comma is new in C99. The forms with
1694 attributes are GNU extensions. In GNU C, we accept any expression
1695 without commas in the syntax (assignment expressions, not just
1696 conditional expressions); assignment expressions will be diagnosed
1701 enumerator-list , enumerator
1704 enumeration-constant
1705 enumeration-constant = constant-expression
1708 static struct c_typespec
1709 c_parser_enum_specifier (c_parser *parser)
1711 struct c_typespec ret;
1713 tree ident = NULL_TREE;
1714 gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM));
1715 c_parser_consume_token (parser);
1716 attrs = c_parser_attributes (parser);
1717 if (c_parser_next_token_is (parser, CPP_NAME))
1719 ident = c_parser_peek_token (parser)->value;
1720 c_parser_consume_token (parser);
1722 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
1724 /* Parse an enum definition. */
1725 tree type = start_enum (ident);
1727 /* We chain the enumerators in reverse order, then put them in
1728 forward order at the end. */
1729 tree values = NULL_TREE;
1730 c_parser_consume_token (parser);
1737 if (c_parser_next_token_is_not (parser, CPP_NAME))
1739 c_parser_error (parser, "expected identifier");
1740 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
1741 values = error_mark_node;
1744 enum_id = c_parser_peek_token (parser)->value;
1745 c_parser_consume_token (parser);
1746 if (c_parser_next_token_is (parser, CPP_EQ))
1748 c_parser_consume_token (parser);
1749 enum_value = c_parser_expr_no_commas (parser, NULL).value;
1752 enum_value = NULL_TREE;
1753 enum_decl = build_enumerator (enum_id, enum_value);
1754 TREE_CHAIN (enum_decl) = values;
1757 if (c_parser_next_token_is (parser, CPP_COMMA))
1760 c_parser_consume_token (parser);
1762 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
1764 if (seen_comma && pedantic && !flag_isoc99)
1765 pedwarn ("comma at end of enumerator list");
1766 c_parser_consume_token (parser);
1771 c_parser_error (parser, "expected %<,%> or %<}%>");
1772 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
1773 values = error_mark_node;
1777 postfix_attrs = c_parser_attributes (parser);
1778 ret.spec = finish_enum (type, nreverse (values),
1779 chainon (attrs, postfix_attrs));
1780 ret.kind = ctsk_tagdef;
1785 c_parser_error (parser, "expected %<{%>");
1786 ret.spec = error_mark_node;
1787 ret.kind = ctsk_tagref;
1790 ret = parser_xref_tag (ENUMERAL_TYPE, ident);
1791 /* In ISO C, enumerated types can be referred to only if already
1793 if (pedantic && !COMPLETE_TYPE_P (ret.spec))
1794 pedwarn ("ISO C forbids forward references to %<enum%> types");
1798 /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1).
1800 struct-or-union-specifier:
1801 struct-or-union attributes[opt] identifier[opt]
1802 { struct-contents } attributes[opt]
1803 struct-or-union attributes[opt] identifier
1806 struct-declaration-list
1808 struct-declaration-list:
1809 struct-declaration ;
1810 struct-declaration-list struct-declaration ;
1817 struct-declaration-list struct-declaration
1819 struct-declaration-list:
1820 struct-declaration-list ;
1823 (Note that in the syntax here, unlike that in ISO C, the semicolons
1824 are included here rather than in struct-declaration, in order to
1825 describe the syntax with extra semicolons and missing semicolon at
1830 struct-declaration-list:
1831 @defs ( class-name )
1833 (Note this does not include a trailing semicolon, but can be
1834 followed by further declarations, and gets a pedwarn-if-pedantic
1835 when followed by a semicolon.) */
1837 static struct c_typespec
1838 c_parser_struct_or_union_specifier (c_parser *parser)
1840 struct c_typespec ret;
1842 tree ident = NULL_TREE;
1843 enum tree_code code;
1844 switch (c_parser_peek_token (parser)->keyword)
1855 c_parser_consume_token (parser);
1856 attrs = c_parser_attributes (parser);
1857 if (c_parser_next_token_is (parser, CPP_NAME))
1859 ident = c_parser_peek_token (parser)->value;
1860 c_parser_consume_token (parser);
1862 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
1864 /* Parse a struct or union definition. Start the scope of the
1865 tag before parsing components. */
1866 tree type = start_struct (code, ident);
1868 /* We chain the components in reverse order, then put them in
1869 forward order at the end. Each struct-declaration may
1870 declare multiple components (comma-separated), so we must use
1871 chainon to join them, although when parsing each
1872 struct-declaration we can use TREE_CHAIN directly.
1874 The theory behind all this is that there will be more
1875 semicolon separated fields than comma separated fields, and
1876 so we'll be minimizing the number of node traversals required
1878 tree contents = NULL_TREE;
1879 c_parser_consume_token (parser);
1880 /* Handle the Objective-C @defs construct,
1881 e.g. foo(sizeof(struct{ @defs(ClassName) }));. */
1882 if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS))
1885 gcc_assert (c_dialect_objc ());
1886 c_parser_consume_token (parser);
1887 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
1889 if (c_parser_next_token_is (parser, CPP_NAME)
1890 && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)
1892 name = c_parser_peek_token (parser)->value;
1893 c_parser_consume_token (parser);
1897 c_parser_error (parser, "expected class name");
1898 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
1901 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
1903 contents = nreverse (objc_get_class_ivars (name));
1906 /* Parse the struct-declarations and semicolons. Problems with
1907 semicolons are diagnosed here; empty structures are diagnosed
1912 /* Parse any stray semicolon. */
1913 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
1916 pedwarn ("extra semicolon in struct or union specified");
1917 c_parser_consume_token (parser);
1920 /* Stop if at the end of the struct or union contents. */
1921 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
1923 c_parser_consume_token (parser);
1926 /* Accept #pragmas at struct scope. */
1927 if (c_parser_next_token_is (parser, CPP_PRAGMA))
1929 c_parser_pragma (parser, pragma_external);
1932 /* Parse some comma-separated declarations, but not the
1933 trailing semicolon if any. */
1934 decls = c_parser_struct_declaration (parser);
1935 contents = chainon (decls, contents);
1936 /* If no semicolon follows, either we have a parse error or
1937 are at the end of the struct or union and should
1939 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
1940 c_parser_consume_token (parser);
1943 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
1944 pedwarn ("no semicolon at end of struct or union");
1947 c_parser_error (parser, "expected %<;%>");
1948 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
1953 postfix_attrs = c_parser_attributes (parser);
1954 ret.spec = finish_struct (type, nreverse (contents),
1955 chainon (attrs, postfix_attrs));
1956 ret.kind = ctsk_tagdef;
1961 c_parser_error (parser, "expected %<{%>");
1962 ret.spec = error_mark_node;
1963 ret.kind = ctsk_tagref;
1966 ret = parser_xref_tag (code, ident);
1970 /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without*
1971 the trailing semicolon.
1974 specifier-qualifier-list struct-declarator-list
1976 specifier-qualifier-list:
1977 type-specifier specifier-qualifier-list[opt]
1978 type-qualifier specifier-qualifier-list[opt]
1979 attributes specifier-qualifier-list[opt]
1981 struct-declarator-list:
1983 struct-declarator-list , attributes[opt] struct-declarator
1986 declarator attributes[opt]
1987 declarator[opt] : constant-expression attributes[opt]
1992 __extension__ struct-declaration
1993 specifier-qualifier-list
1995 Unlike the ISO C syntax, semicolons are handled elsewhere. The use
1996 of attributes where shown is a GNU extension. In GNU C, we accept
1997 any expression without commas in the syntax (assignment
1998 expressions, not just conditional expressions); assignment
1999 expressions will be diagnosed as non-constant. */
2002 c_parser_struct_declaration (c_parser *parser)
2004 struct c_declspecs *specs;
2006 tree all_prefix_attrs;
2008 if (c_parser_next_token_is_keyword (parser, RID_EXTENSION))
2012 ext = disable_extension_diagnostics ();
2013 c_parser_consume_token (parser);
2014 decl = c_parser_struct_declaration (parser);
2015 restore_extension_diagnostics (ext);
2018 specs = build_null_declspecs ();
2019 c_parser_declspecs (parser, specs, false, true, true);
2022 if (!specs->declspecs_seen_p)
2024 c_parser_error (parser, "expected specifier-qualifier-list");
2027 finish_declspecs (specs);
2028 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
2031 if (!specs->type_seen_p)
2034 pedwarn ("ISO C forbids member declarations with no members");
2035 shadow_tag_warned (specs, pedantic);
2040 /* Support for unnamed structs or unions as members of
2041 structs or unions (which is [a] useful and [b] supports
2043 ret = grokfield (build_id_declarator (NULL_TREE), specs, NULL_TREE);
2047 pending_xref_error ();
2048 prefix_attrs = specs->attrs;
2049 all_prefix_attrs = prefix_attrs;
2050 specs->attrs = NULL_TREE;
2054 /* Declaring one or more declarators or un-named bit-fields. */
2055 struct c_declarator *declarator;
2057 if (c_parser_next_token_is (parser, CPP_COLON))
2058 declarator = build_id_declarator (NULL_TREE);
2060 declarator = c_parser_declarator (parser, specs->type_seen_p,
2061 C_DTR_NORMAL, &dummy);
2062 if (declarator == NULL)
2064 c_parser_skip_to_end_of_block_or_statement (parser);
2067 if (c_parser_next_token_is (parser, CPP_COLON)
2068 || c_parser_next_token_is (parser, CPP_COMMA)
2069 || c_parser_next_token_is (parser, CPP_SEMICOLON)
2070 || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)
2071 || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
2073 tree postfix_attrs = NULL_TREE;
2074 tree width = NULL_TREE;
2076 if (c_parser_next_token_is (parser, CPP_COLON))
2078 c_parser_consume_token (parser);
2079 width = c_parser_expr_no_commas (parser, NULL).value;
2081 if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
2082 postfix_attrs = c_parser_attributes (parser);
2083 d = grokfield (declarator, specs, width);
2084 decl_attributes (&d, chainon (postfix_attrs,
2085 all_prefix_attrs), 0);
2086 TREE_CHAIN (d) = decls;
2088 if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
2089 all_prefix_attrs = chainon (c_parser_attributes (parser),
2092 all_prefix_attrs = prefix_attrs;
2093 if (c_parser_next_token_is (parser, CPP_COMMA))
2094 c_parser_consume_token (parser);
2095 else if (c_parser_next_token_is (parser, CPP_SEMICOLON)
2096 || c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
2098 /* Semicolon consumed in caller. */
2103 c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>");
2109 c_parser_error (parser,
2110 "expected %<:%>, %<,%>, %<;%>, %<}%> or "
2111 "%<__attribute__%>");
2118 /* Parse a typeof specifier (a GNU extension).
2121 typeof ( expression )
2122 typeof ( type-name )
2125 static struct c_typespec
2126 c_parser_typeof_specifier (c_parser *parser)
2128 struct c_typespec ret;
2129 ret.kind = ctsk_typeof;
2130 ret.spec = error_mark_node;
2131 gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF));
2132 c_parser_consume_token (parser);
2135 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
2141 if (c_parser_next_token_starts_typename (parser))
2143 struct c_type_name *type = c_parser_type_name (parser);
2148 ret.spec = groktypename (type);
2149 pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE));
2155 struct c_expr expr = c_parser_expression (parser);
2158 if (TREE_CODE (expr.value) == COMPONENT_REF
2159 && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1)))
2160 error ("%<typeof%> applied to a bit-field");
2161 ret.spec = TREE_TYPE (expr.value);
2162 was_vm = variably_modified_type_p (ret.spec, NULL_TREE);
2163 /* This should be returned with the type so that when the type
2164 is evaluated, this can be evaluated. For now, we avoid
2165 evaluation when the context might. */
2166 if (!skip_evaluation && was_vm)
2168 tree e = expr.value;
2170 /* If the expression is not of a type to which we cannot assign a line
2171 number, wrap the thing in a no-op NOP_EXPR. */
2172 if (DECL_P (e) || CONSTANT_CLASS_P (e))
2173 e = build1 (NOP_EXPR, void_type_node, e);
2176 SET_EXPR_LOCATION (e, input_location);
2180 pop_maybe_used (was_vm);
2182 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
2186 /* Parse a declarator, possibly an abstract declarator (C90 6.5.4,
2187 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may
2188 be redeclared; otherwise it may not. KIND indicates which kind of
2189 declarator is wanted. Returns a valid declarator except in the
2190 case of a syntax error in which case NULL is returned. *SEEN_ID is
2191 set to true if an identifier being declared is seen; this is used
2192 to diagnose bad forms of abstract array declarators and to
2193 determine whether an identifier list is syntactically permitted.
2196 pointer[opt] direct-declarator
2200 ( attributes[opt] declarator )
2201 direct-declarator array-declarator
2202 direct-declarator ( parameter-type-list )
2203 direct-declarator ( identifier-list[opt] )
2206 * type-qualifier-list[opt]
2207 * type-qualifier-list[opt] pointer
2209 type-qualifier-list:
2212 type-qualifier-list type-qualifier
2213 type-qualifier-list attributes
2215 parameter-type-list:
2217 parameter-list , ...
2220 parameter-declaration
2221 parameter-list , parameter-declaration
2223 parameter-declaration:
2224 declaration-specifiers declarator attributes[opt]
2225 declaration-specifiers abstract-declarator[opt] attributes[opt]
2229 identifier-list , identifier
2231 abstract-declarator:
2233 pointer[opt] direct-abstract-declarator
2235 direct-abstract-declarator:
2236 ( attributes[opt] abstract-declarator )
2237 direct-abstract-declarator[opt] array-declarator
2238 direct-abstract-declarator[opt] ( parameter-type-list[opt] )
2243 direct-declarator ( parameter-forward-declarations
2244 parameter-type-list[opt] )
2246 direct-abstract-declarator:
2247 direct-abstract-declarator[opt] ( parameter-forward-declarations
2248 parameter-type-list[opt] )
2250 parameter-forward-declarations:
2252 parameter-forward-declarations parameter-list ;
2254 The uses of attributes shown above are GNU extensions.
2256 Some forms of array declarator are not included in C99 in the
2257 syntax for abstract declarators; these are disallowed elsewhere.
2258 This may be a defect (DR#289).
2260 This function also accepts an omitted abstract declarator as being
2261 an abstract declarator, although not part of the formal syntax. */
2263 static struct c_declarator *
2264 c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind,
2267 /* Parse any initial pointer part. */
2268 if (c_parser_next_token_is (parser, CPP_MULT))
2270 struct c_declspecs *quals_attrs = build_null_declspecs ();
2271 struct c_declarator *inner;
2272 c_parser_consume_token (parser);
2273 c_parser_declspecs (parser, quals_attrs, false, false, true);
2274 inner = c_parser_declarator (parser, type_seen_p, kind, seen_id);
2278 return make_pointer_declarator (quals_attrs, inner);
2280 /* Now we have a direct declarator, direct abstract declarator or
2281 nothing (which counts as a direct abstract declarator here). */
2282 return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id);
2285 /* Parse a direct declarator or direct abstract declarator; arguments
2286 as c_parser_declarator. */
2288 static struct c_declarator *
2289 c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind,
2292 /* The direct declarator must start with an identifier (possibly
2293 omitted) or a parenthesized declarator (possibly abstract). In
2294 an ordinary declarator, initial parentheses must start a
2295 parenthesized declarator. In an abstract declarator or parameter
2296 declarator, they could start a parenthesized declarator or a
2297 parameter list. To tell which, the open parenthesis and any
2298 following attributes must be read. If a declaration specifier
2299 follows, then it is a parameter list; if the specifier is a
2300 typedef name, there might be an ambiguity about redeclaring it,
2301 which is resolved in the direction of treating it as a typedef
2302 name. If a close parenthesis follows, it is also an empty
2303 parameter list, as the syntax does not permit empty abstract
2304 declarators. Otherwise, it is a parenthesized declarator (in
2305 which case the analysis may be repeated inside it, recursively).
2307 ??? There is an ambiguity in a parameter declaration "int
2308 (__attribute__((foo)) x)", where x is not a typedef name: it
2309 could be an abstract declarator for a function, or declare x with
2310 parentheses. The proper resolution of this ambiguity needs
2311 documenting. At present we follow an accident of the old
2312 parser's implementation, whereby the first parameter must have
2313 some declaration specifiers other than just attributes. Thus as
2314 a parameter declaration it is treated as a parenthesized
2315 parameter named x, and as an abstract declarator it is
2318 ??? Also following the old parser, attributes inside an empty
2319 parameter list are ignored, making it a list not yielding a
2320 prototype, rather than giving an error or making it have one
2321 parameter with implicit type int.
2323 ??? Also following the old parser, typedef names may be
2324 redeclared in declarators, but not Objective-C class names. */
2326 if (kind != C_DTR_ABSTRACT
2327 && c_parser_next_token_is (parser, CPP_NAME)
2329 && c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME)
2330 || c_parser_peek_token (parser)->id_kind == C_ID_ID))
2332 struct c_declarator *inner
2333 = build_id_declarator (c_parser_peek_token (parser)->value);
2335 inner->id_loc = c_parser_peek_token (parser)->location;
2336 c_parser_consume_token (parser);
2337 return c_parser_direct_declarator_inner (parser, *seen_id, inner);
2340 if (kind != C_DTR_NORMAL
2341 && c_parser_next_token_is (parser, CPP_OPEN_SQUARE))
2343 struct c_declarator *inner = build_id_declarator (NULL_TREE);
2344 return c_parser_direct_declarator_inner (parser, *seen_id, inner);
2347 /* Either we are at the end of an abstract declarator, or we have
2350 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
2353 struct c_declarator *inner;
2354 c_parser_consume_token (parser);
2355 attrs = c_parser_attributes (parser);
2356 if (kind != C_DTR_NORMAL
2357 && (c_parser_next_token_starts_declspecs (parser)
2358 || c_parser_next_token_is (parser, CPP_CLOSE_PAREN)))
2360 struct c_arg_info *args
2361 = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL,
2368 = build_function_declarator (args,
2369 build_id_declarator (NULL_TREE));
2370 return c_parser_direct_declarator_inner (parser, *seen_id,
2374 /* A parenthesized declarator. */
2375 inner = c_parser_declarator (parser, type_seen_p, kind, seen_id);
2376 if (inner != NULL && attrs != NULL)
2377 inner = build_attrs_declarator (attrs, inner);
2378 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2380 c_parser_consume_token (parser);
2384 return c_parser_direct_declarator_inner (parser, *seen_id, inner);
2388 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2395 if (kind == C_DTR_NORMAL)
2397 c_parser_error (parser, "expected identifier or %<(%>");
2401 return build_id_declarator (NULL_TREE);
2405 /* Parse part of a direct declarator or direct abstract declarator,
2406 given that some (in INNER) has already been parsed; ID_PRESENT is
2407 true if an identifier is present, false for an abstract
2410 static struct c_declarator *
2411 c_parser_direct_declarator_inner (c_parser *parser, bool id_present,
2412 struct c_declarator *inner)
2414 /* Parse a sequence of array declarators and parameter lists. */
2415 if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE))
2417 struct c_declarator *declarator;
2418 struct c_declspecs *quals_attrs = build_null_declspecs ();
2422 c_parser_consume_token (parser);
2423 c_parser_declspecs (parser, quals_attrs, false, false, true);
2424 static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC);
2426 c_parser_consume_token (parser);
2427 if (static_seen && !quals_attrs->declspecs_seen_p)
2428 c_parser_declspecs (parser, quals_attrs, false, false, true);
2429 if (!quals_attrs->declspecs_seen_p)
2431 /* If "static" is present, there must be an array dimension.
2432 Otherwise, there may be a dimension, "*", or no
2437 dimen = c_parser_expr_no_commas (parser, NULL).value;
2441 if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
2446 else if (c_parser_next_token_is (parser, CPP_MULT))
2448 if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE)
2452 c_parser_consume_token (parser);
2457 dimen = c_parser_expr_no_commas (parser, NULL).value;
2463 dimen = c_parser_expr_no_commas (parser, NULL).value;
2466 if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
2467 c_parser_consume_token (parser);
2470 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
2474 declarator = build_array_declarator (dimen, quals_attrs, static_seen,
2476 if (declarator == NULL)
2478 inner = set_array_declarator_inner (declarator, inner, !id_present);
2479 return c_parser_direct_declarator_inner (parser, id_present, inner);
2481 else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
2484 struct c_arg_info *args;
2485 c_parser_consume_token (parser);
2486 attrs = c_parser_attributes (parser);
2487 args = c_parser_parms_declarator (parser, id_present, attrs);
2492 inner = build_function_declarator (args, inner);
2493 return c_parser_direct_declarator_inner (parser, id_present, inner);
2499 /* Parse a parameter list or identifier list, including the closing
2500 parenthesis but not the opening one. ATTRS are the attributes at
2501 the start of the list. ID_LIST_OK is true if an identifier list is
2502 acceptable; such a list must not have attributes at the start. */
2504 static struct c_arg_info *
2505 c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs)
2508 declare_parm_level ();
2509 /* If the list starts with an identifier, it is an identifier list.
2510 Otherwise, it is either a prototype list or an empty list. */
2513 && c_parser_next_token_is (parser, CPP_NAME)
2514 && c_parser_peek_token (parser)->id_kind == C_ID_ID)
2516 tree list = NULL_TREE, *nextp = &list;
2517 while (c_parser_next_token_is (parser, CPP_NAME)
2518 && c_parser_peek_token (parser)->id_kind == C_ID_ID)
2520 *nextp = build_tree_list (NULL_TREE,
2521 c_parser_peek_token (parser)->value);
2522 nextp = & TREE_CHAIN (*nextp);
2523 c_parser_consume_token (parser);
2524 if (c_parser_next_token_is_not (parser, CPP_COMMA))
2526 c_parser_consume_token (parser);
2527 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2529 c_parser_error (parser, "expected identifier");
2533 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2535 struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
2540 ret->pending_sizes = 0;
2541 ret->had_vla_unspec = 0;
2542 c_parser_consume_token (parser);
2548 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2556 struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs);
2562 /* Parse a parameter list (possibly empty), including the closing
2563 parenthesis but not the opening one. ATTRS are the attributes at
2564 the start of the list. */
2566 static struct c_arg_info *
2567 c_parser_parms_list_declarator (c_parser *parser, tree attrs)
2569 bool good_parm = false;
2570 /* ??? Following the old parser, forward parameter declarations may
2571 use abstract declarators, and if no real parameter declarations
2572 follow the forward declarations then this is not diagnosed. Also
2573 note as above that attributes are ignored as the only contents of
2574 the parentheses, or as the only contents after forward
2576 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2578 struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
2583 ret->pending_sizes = 0;
2584 ret->had_vla_unspec = 0;
2585 c_parser_consume_token (parser);
2588 if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
2590 struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
2594 ret->pending_sizes = 0;
2595 ret->had_vla_unspec = 0;
2596 /* Suppress -Wold-style-definition for this case. */
2597 ret->types = error_mark_node;
2598 error ("ISO C requires a named argument before %<...%>");
2599 c_parser_consume_token (parser);
2600 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2602 c_parser_consume_token (parser);
2607 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2612 /* Nonempty list of parameters, either terminated with semicolon
2613 (forward declarations; recurse) or with close parenthesis (normal
2614 function) or with ", ... )" (variadic function). */
2617 /* Parse a parameter. */
2618 struct c_parm *parm = c_parser_parameter_declaration (parser, attrs);
2623 push_parm_decl (parm);
2625 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
2628 c_parser_consume_token (parser);
2629 mark_forward_parm_decls ();
2630 new_attrs = c_parser_attributes (parser);
2631 return c_parser_parms_list_declarator (parser, new_attrs);
2633 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2635 c_parser_consume_token (parser);
2637 return get_parm_info (false);
2640 struct c_arg_info *ret
2641 = XOBNEW (&parser_obstack, struct c_arg_info);
2646 ret->pending_sizes = 0;
2647 ret->had_vla_unspec = 0;
2651 if (!c_parser_require (parser, CPP_COMMA,
2652 "expected %<;%>, %<,%> or %<)%>"))
2654 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
2657 if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
2659 c_parser_consume_token (parser);
2660 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2662 c_parser_consume_token (parser);
2664 return get_parm_info (true);
2667 struct c_arg_info *ret
2668 = XOBNEW (&parser_obstack, struct c_arg_info);
2673 ret->pending_sizes = 0;
2674 ret->had_vla_unspec = 0;
2680 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2688 /* Parse a parameter declaration. ATTRS are the attributes at the
2689 start of the declaration if it is the first parameter. */
2691 static struct c_parm *
2692 c_parser_parameter_declaration (c_parser *parser, tree attrs)
2694 struct c_declspecs *specs;
2695 struct c_declarator *declarator;
2697 tree postfix_attrs = NULL_TREE;
2699 if (!c_parser_next_token_starts_declspecs (parser))
2701 /* ??? In some Objective-C cases '...' isn't applicable so there
2702 should be a different message. */
2703 c_parser_error (parser,
2704 "expected declaration specifiers or %<...%>");
2705 c_parser_skip_to_end_of_parameter (parser);
2708 specs = build_null_declspecs ();
2711 declspecs_add_attrs (specs, attrs);
2714 c_parser_declspecs (parser, specs, true, true, true);
2715 finish_declspecs (specs);
2716 pending_xref_error ();
2717 prefix_attrs = specs->attrs;
2718 specs->attrs = NULL_TREE;
2719 declarator = c_parser_declarator (parser, specs->type_seen_p,
2720 C_DTR_PARM, &dummy);
2721 if (declarator == NULL)
2723 c_parser_skip_until_found (parser, CPP_COMMA, NULL);
2726 if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
2727 postfix_attrs = c_parser_attributes (parser);
2728 return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs),
2732 /* Parse a string literal in an asm expression. It should not be
2733 translated, and wide string literals are an error although
2734 permitted by the syntax. This is a GNU extension.
2739 ??? At present, following the old parser, the caller needs to have
2740 set c_lex_string_translate to 0. It would be better to follow the
2741 C++ parser rather than using the c_lex_string_translate kludge. */
2744 c_parser_asm_string_literal (c_parser *parser)
2747 if (c_parser_next_token_is (parser, CPP_STRING))
2749 str = c_parser_peek_token (parser)->value;
2750 c_parser_consume_token (parser);
2752 else if (c_parser_next_token_is (parser, CPP_WSTRING))
2754 error ("wide string literal in %<asm%>");
2755 str = build_string (1, "");
2756 c_parser_consume_token (parser);
2760 c_parser_error (parser, "expected string literal");
2766 /* Parse a simple asm expression. This is used in restricted
2767 contexts, where a full expression with inputs and outputs does not
2768 make sense. This is a GNU extension.
2771 asm ( asm-string-literal )
2775 c_parser_simple_asm_expr (c_parser *parser)
2778 gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM));
2779 /* ??? Follow the C++ parser rather than using the
2780 c_lex_string_translate kludge. */
2781 c_lex_string_translate = 0;
2782 c_parser_consume_token (parser);
2783 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
2785 c_lex_string_translate = 1;
2788 str = c_parser_asm_string_literal (parser);
2789 c_lex_string_translate = 1;
2790 if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
2792 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
2798 /* Parse (possibly empty) attributes. This is a GNU extension.
2802 attributes attribute
2805 __attribute__ ( ( attribute-list ) )
2809 attribute_list , attrib
2814 any-word ( identifier )
2815 any-word ( identifier , nonempty-expr-list )
2816 any-word ( expr-list )
2818 where the "identifier" must not be declared as a type, and
2819 "any-word" may be any identifier (including one declared as a
2820 type), a reserved word storage class specifier, type specifier or
2821 type qualifier. ??? This still leaves out most reserved keywords
2822 (following the old parser), shouldn't we include them, and why not
2823 allow identifiers declared as types to start the arguments? */
2826 c_parser_attributes (c_parser *parser)
2828 tree attrs = NULL_TREE;
2829 while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
2831 /* ??? Follow the C++ parser rather than using the
2832 c_lex_string_translate kludge. */
2833 c_lex_string_translate = 0;
2834 c_parser_consume_token (parser);
2835 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
2837 c_lex_string_translate = 1;
2840 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
2842 c_lex_string_translate = 1;
2843 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
2846 /* Parse the attribute list. */
2847 while (c_parser_next_token_is (parser, CPP_COMMA)
2848 || c_parser_next_token_is (parser, CPP_NAME)
2849 || c_parser_next_token_is (parser, CPP_KEYWORD))
2851 tree attr, attr_name, attr_args;
2852 if (c_parser_next_token_is (parser, CPP_COMMA))
2854 c_parser_consume_token (parser);
2857 if (c_parser_next_token_is (parser, CPP_KEYWORD))
2859 /* ??? See comment above about what keywords are
2862 switch (c_parser_peek_token (parser)->keyword)
2897 attr_name = c_parser_peek_token (parser)->value;
2898 c_parser_consume_token (parser);
2899 if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN))
2901 attr = build_tree_list (attr_name, NULL_TREE);
2902 attrs = chainon (attrs, attr);
2905 c_parser_consume_token (parser);
2906 /* Parse the attribute contents. If they start with an
2907 identifier which is followed by a comma or close
2908 parenthesis, then the arguments start with that
2909 identifier; otherwise they are an expression list. */
2910 if (c_parser_next_token_is (parser, CPP_NAME)
2911 && c_parser_peek_token (parser)->id_kind == C_ID_ID
2912 && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA)
2913 || (c_parser_peek_2nd_token (parser)->type
2914 == CPP_CLOSE_PAREN)))
2916 tree arg1 = c_parser_peek_token (parser)->value;
2917 c_parser_consume_token (parser);
2918 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2919 attr_args = build_tree_list (NULL_TREE, arg1);
2922 c_parser_consume_token (parser);
2923 attr_args = tree_cons (NULL_TREE, arg1,
2924 c_parser_expr_list (parser, false));
2929 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2930 attr_args = NULL_TREE;
2932 attr_args = c_parser_expr_list (parser, false);
2934 attr = build_tree_list (attr_name, attr_args);
2935 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2936 c_parser_consume_token (parser);
2939 c_lex_string_translate = 1;
2940 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2944 attrs = chainon (attrs, attr);
2946 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2947 c_parser_consume_token (parser);
2950 c_lex_string_translate = 1;
2951 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2955 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
2956 c_parser_consume_token (parser);
2959 c_lex_string_translate = 1;
2960 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
2964 c_lex_string_translate = 1;
2969 /* Parse a type name (C90 6.5.5, C99 6.7.6).
2972 specifier-qualifier-list abstract-declarator[opt]
2975 static struct c_type_name *
2976 c_parser_type_name (c_parser *parser)
2978 struct c_declspecs *specs = build_null_declspecs ();
2979 struct c_declarator *declarator;
2980 struct c_type_name *ret;
2982 c_parser_declspecs (parser, specs, false, true, true);
2983 if (!specs->declspecs_seen_p)
2985 c_parser_error (parser, "expected specifier-qualifier-list");
2988 pending_xref_error ();
2989 finish_declspecs (specs);
2990 declarator = c_parser_declarator (parser, specs->type_seen_p,
2991 C_DTR_ABSTRACT, &dummy);
2992 if (declarator == NULL)
2994 ret = XOBNEW (&parser_obstack, struct c_type_name);
2996 ret->declarator = declarator;
3000 /* Parse an initializer (C90 6.5.7, C99 6.7.8).
3003 assignment-expression
3004 { initializer-list }
3005 { initializer-list , }
3008 designation[opt] initializer
3009 initializer-list , designation[opt] initializer
3016 designator-list designator
3023 [ constant-expression ]
3035 [ constant-expression ... constant-expression ]
3037 Any expression without commas is accepted in the syntax for the
3038 constant-expressions, with non-constant expressions rejected later.
3040 This function is only used for top-level initializers; for nested
3041 ones, see c_parser_initval. */
3043 static struct c_expr
3044 c_parser_initializer (c_parser *parser)
3046 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
3047 return c_parser_braced_init (parser, NULL_TREE, false);
3051 ret = c_parser_expr_no_commas (parser, NULL);
3052 if (TREE_CODE (ret.value) != STRING_CST
3053 && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR)
3054 ret = default_function_array_conversion (ret);
3059 /* Parse a braced initializer list. TYPE is the type specified for a
3060 compound literal, and NULL_TREE for other initializers and for
3061 nested braced lists. NESTED_P is true for nested braced lists,
3062 false for the list of a compound literal or the list that is the
3063 top-level initializer in a declaration. */
3065 static struct c_expr
3066 c_parser_braced_init (c_parser *parser, tree type, bool nested_p)
3068 gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE));
3069 c_parser_consume_token (parser);
3071 push_init_level (0);
3073 really_start_incremental_init (type);
3074 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
3077 pedwarn ("ISO C forbids empty initializer braces");
3081 /* Parse a non-empty initializer list, possibly with a trailing
3085 c_parser_initelt (parser);
3088 if (c_parser_next_token_is (parser, CPP_COMMA))
3089 c_parser_consume_token (parser);
3092 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
3096 if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE))
3099 ret.value = error_mark_node;
3100 ret.original_code = ERROR_MARK;
3101 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>");
3104 c_parser_consume_token (parser);
3105 return pop_init_level (0);
3108 /* Parse a nested initializer, including designators. */
3111 c_parser_initelt (c_parser *parser)
3113 /* Parse any designator or designator list. A single array
3114 designator may have the subsequent "=" omitted in GNU C, but a
3115 longer list or a structure member designator may not. */
3116 if (c_parser_next_token_is (parser, CPP_NAME)
3117 && c_parser_peek_2nd_token (parser)->type == CPP_COLON)
3119 /* Old-style structure member designator. */
3120 set_init_label (c_parser_peek_token (parser)->value);
3122 pedwarn ("obsolete use of designated initializer with %<:%>");
3123 c_parser_consume_token (parser);
3124 c_parser_consume_token (parser);
3128 /* des_seen is 0 if there have been no designators, 1 if there
3129 has been a single array designator and 2 otherwise. */
3131 while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)
3132 || c_parser_next_token_is (parser, CPP_DOT))
3134 int des_prev = des_seen;
3137 if (c_parser_next_token_is (parser, CPP_DOT))
3140 c_parser_consume_token (parser);
3141 if (c_parser_next_token_is (parser, CPP_NAME))
3143 set_init_label (c_parser_peek_token (parser)->value);
3144 c_parser_consume_token (parser);
3149 init.value = error_mark_node;
3150 init.original_code = ERROR_MARK;
3151 c_parser_error (parser, "expected identifier");
3152 c_parser_skip_until_found (parser, CPP_COMMA, NULL);
3153 process_init_element (init);
3160 /* ??? Following the old parser, [ objc-receiver
3161 objc-message-args ] is accepted as an initializer,
3162 being distinguished from a designator by what follows
3163 the first assignment expression inside the square
3164 brackets, but after a first array designator a
3165 subsequent square bracket is for Objective-C taken to
3166 start an expression, using the obsolete form of
3167 designated initializer without '=', rather than
3168 possibly being a second level of designation: in LALR
3169 terms, the '[' is shifted rather than reducing
3170 designator to designator-list. */
3171 if (des_prev == 1 && c_dialect_objc ())
3173 des_seen = des_prev;
3176 if (des_prev == 0 && c_dialect_objc ())
3178 /* This might be an array designator or an
3179 Objective-C message expression. If the former,
3180 continue parsing here; if the latter, parse the
3181 remainder of the initializer given the starting
3182 primary-expression. ??? It might make sense to
3183 distinguish when des_prev == 1 as well; see
3184 previous comment. */
3186 struct c_expr mexpr;
3187 c_parser_consume_token (parser);
3188 if (c_parser_peek_token (parser)->type == CPP_NAME
3189 && ((c_parser_peek_token (parser)->id_kind
3191 || (c_parser_peek_token (parser)->id_kind
3192 == C_ID_CLASSNAME)))
3194 /* Type name receiver. */
3195 tree id = c_parser_peek_token (parser)->value;
3196 c_parser_consume_token (parser);
3197 rec = objc_get_class_reference (id);
3198 goto parse_message_args;
3200 first = c_parser_expr_no_commas (parser, NULL).value;
3201 if (c_parser_next_token_is (parser, CPP_ELLIPSIS)
3202 || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
3203 goto array_desig_after_first;
3204 /* Expression receiver. So far only one part
3205 without commas has been parsed; there might be
3206 more of the expression. */
3208 while (c_parser_next_token_is (parser, CPP_COMMA))
3211 c_parser_consume_token (parser);
3212 next = c_parser_expr_no_commas (parser, NULL);
3213 next = default_function_array_conversion (next);
3214 rec = build_compound_expr (rec, next.value);
3217 /* Now parse the objc-message-args. */
3218 args = c_parser_objc_message_args (parser);
3219 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
3222 = objc_build_message_expr (build_tree_list (rec, args));
3223 mexpr.original_code = ERROR_MARK;
3224 /* Now parse and process the remainder of the
3225 initializer, starting with this message
3226 expression as a primary-expression. */
3227 c_parser_initval (parser, &mexpr);
3230 c_parser_consume_token (parser);
3231 first = c_parser_expr_no_commas (parser, NULL).value;
3232 array_desig_after_first:
3233 if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
3235 c_parser_consume_token (parser);
3236 second = c_parser_expr_no_commas (parser, NULL).value;
3240 if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
3242 c_parser_consume_token (parser);
3243 set_init_index (first, second);
3244 if (pedantic && second)
3245 pedwarn ("ISO C forbids specifying range of "
3246 "elements to initialize");
3249 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
3255 if (c_parser_next_token_is (parser, CPP_EQ))
3257 if (pedantic && !flag_isoc99)
3258 pedwarn ("ISO C90 forbids specifying subobject to initialize");
3259 c_parser_consume_token (parser);
3266 pedwarn ("obsolete use of designated initializer "
3272 init.value = error_mark_node;
3273 init.original_code = ERROR_MARK;
3274 c_parser_error (parser, "expected %<=%>");
3275 c_parser_skip_until_found (parser, CPP_COMMA, NULL);
3276 process_init_element (init);
3282 c_parser_initval (parser, NULL);
3285 /* Parse a nested initializer; as c_parser_initializer but parses
3286 initializers within braced lists, after any designators have been
3287 applied. If AFTER is not NULL then it is an Objective-C message
3288 expression which is the primary-expression starting the
3292 c_parser_initval (c_parser *parser, struct c_expr *after)
3295 gcc_assert (!after || c_dialect_objc ());
3296 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after)
3297 init = c_parser_braced_init (parser, NULL_TREE, true);
3300 init = c_parser_expr_no_commas (parser, after);
3301 if (init.value != NULL_TREE
3302 && TREE_CODE (init.value) != STRING_CST
3303 && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR)
3304 init = default_function_array_conversion (init);
3306 process_init_element (init);
3309 /* Parse a compound statement (possibly a function body) (C90 6.6.2,
3313 { block-item-list[opt] }
3314 { label-declarations block-item-list }
3318 block-item-list block-item
3330 { label-declarations block-item-list }
3333 __extension__ nested-declaration
3334 nested-function-definition
3338 label-declarations label-declaration
3341 __label__ identifier-list ;
3343 Allowing the mixing of declarations and code is new in C99. The
3344 GNU syntax also permits (not shown above) labels at the end of
3345 compound statements, which yield an error. We don't allow labels
3346 on declarations; this might seem like a natural extension, but
3347 there would be a conflict between attributes on the label and
3348 prefix attributes on the declaration. ??? The syntax follows the
3349 old parser in requiring something after label declarations.
3350 Although they are erroneous if the labels declared aren't defined,
3351 is it useful for the syntax to be this way?
3363 c_parser_compound_statement (c_parser *parser)
3366 if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
3367 return error_mark_node;
3368 stmt = c_begin_compound_stmt (true);
3369 c_parser_compound_statement_nostart (parser);
3370 return c_end_compound_stmt (stmt, true);
3373 /* Parse a compound statement except for the opening brace. This is
3374 used for parsing both compound statements and statement expressions
3375 (which follow different paths to handling the opening). */
3378 c_parser_compound_statement_nostart (c_parser *parser)
3380 bool last_stmt = false;
3381 bool last_label = false;
3382 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
3384 c_parser_consume_token (parser);
3387 if (c_parser_next_token_is_keyword (parser, RID_LABEL))
3389 /* Read zero or more forward-declarations for labels that nested
3390 functions can jump to. */
3391 while (c_parser_next_token_is_keyword (parser, RID_LABEL))
3393 c_parser_consume_token (parser);
3394 /* Any identifiers, including those declared as type names,
3399 if (c_parser_next_token_is_not (parser, CPP_NAME))
3401 c_parser_error (parser, "expected identifier");
3405 = declare_label (c_parser_peek_token (parser)->value);
3406 C_DECLARED_LABEL_FLAG (label) = 1;
3407 add_stmt (build_stmt (DECL_EXPR, label));
3408 c_parser_consume_token (parser);
3409 if (c_parser_next_token_is (parser, CPP_COMMA))
3410 c_parser_consume_token (parser);
3414 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
3416 /* ??? Locating this diagnostic on the token after the
3417 declarations end follows the old parser, but it might be
3418 better to locate it where the declarations start instead. */
3420 pedwarn ("ISO C forbids label declarations");
3422 /* We must now have at least one statement, label or declaration. */
3423 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
3425 c_parser_error (parser, "expected declaration or statement");
3426 c_parser_consume_token (parser);
3429 while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE))
3431 location_t loc = c_parser_peek_token (parser)->location;
3432 if (c_parser_next_token_is_keyword (parser, RID_CASE)
3433 || c_parser_next_token_is_keyword (parser, RID_DEFAULT)
3434 || (c_parser_next_token_is (parser, CPP_NAME)
3435 && c_parser_peek_2nd_token (parser)->type == CPP_COLON))
3439 c_parser_label (parser);
3441 else if (!last_label
3442 && c_parser_next_token_starts_declspecs (parser))
3445 c_parser_declaration_or_fndef (parser, true, true, true, true);
3447 && ((pedantic && !flag_isoc99)
3448 || warn_declaration_after_statement))
3449 pedwarn_c90 ("%HISO C90 forbids mixed declarations and code",
3453 else if (!last_label
3454 && c_parser_next_token_is_keyword (parser, RID_EXTENSION))
3456 /* __extension__ can start a declaration, but is also an
3457 unary operator that can start an expression. Consume all
3458 but the last of a possible series of __extension__ to
3460 while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD
3461 && (c_parser_peek_2nd_token (parser)->keyword
3463 c_parser_consume_token (parser);
3464 if (c_token_starts_declspecs (c_parser_peek_2nd_token (parser)))
3467 ext = disable_extension_diagnostics ();
3468 c_parser_consume_token (parser);
3470 c_parser_declaration_or_fndef (parser, true, true, true, true);
3471 /* Following the old parser, __extension__ does not
3472 disable this diagnostic. */
3473 restore_extension_diagnostics (ext);
3475 && ((pedantic && !flag_isoc99)
3476 || warn_declaration_after_statement))
3477 pedwarn_c90 ("%HISO C90 forbids mixed declarations and code",
3484 else if (c_parser_next_token_is (parser, CPP_PRAGMA))
3486 /* External pragmas, and some omp pragmas, are not associated
3487 with regular c code, and so are not to be considered statements
3488 syntactically. This ensures that the user doesn't put them
3489 places that would turn into syntax errors if the directive
3491 if (c_parser_pragma (parser, pragma_compound))
3492 last_label = false, last_stmt = true;
3494 else if (c_parser_next_token_is (parser, CPP_EOF))
3496 c_parser_error (parser, "expected declaration or statement");
3504 c_parser_statement_after_labels (parser);
3507 parser->error = false;
3510 error ("label at end of compound statement");
3511 c_parser_consume_token (parser);
3514 /* Parse a label (C90 6.6.1, C99 6.8.1).
3517 identifier : attributes[opt]
3518 case constant-expression :
3524 case constant-expression ... constant-expression :
3526 The use of attributes on labels is a GNU extension. The syntax in
3527 GNU C accepts any expressions without commas, non-constant
3528 expressions being rejected later. */
3531 c_parser_label (c_parser *parser)
3533 location_t loc1 = c_parser_peek_token (parser)->location;
3534 tree label = NULL_TREE;
3535 if (c_parser_next_token_is_keyword (parser, RID_CASE))
3538 c_parser_consume_token (parser);
3539 exp1 = c_parser_expr_no_commas (parser, NULL).value;
3540 if (c_parser_next_token_is (parser, CPP_COLON))
3542 c_parser_consume_token (parser);
3543 label = do_case (exp1, NULL_TREE);
3545 else if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
3547 c_parser_consume_token (parser);
3548 exp2 = c_parser_expr_no_commas (parser, NULL).value;
3549 if (c_parser_require (parser, CPP_COLON, "expected %<:%>"))
3550 label = do_case (exp1, exp2);
3553 c_parser_error (parser, "expected %<:%> or %<...%>");
3555 else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT))
3557 c_parser_consume_token (parser);
3558 if (c_parser_require (parser, CPP_COLON, "expected %<:%>"))
3559 label = do_case (NULL_TREE, NULL_TREE);
3563 tree name = c_parser_peek_token (parser)->value;
3567 gcc_assert (c_parser_next_token_is (parser, CPP_NAME));
3568 c_parser_consume_token (parser);
3569 gcc_assert (c_parser_next_token_is (parser, CPP_COLON));
3570 loc2 = c_parser_peek_token (parser)->location;
3571 c_parser_consume_token (parser);
3572 attrs = c_parser_attributes (parser);
3573 tlab = define_label (loc2, name);
3576 decl_attributes (&tlab, attrs, 0);
3577 label = add_stmt (build_stmt (LABEL_EXPR, tlab));
3581 SET_EXPR_LOCATION (label, loc1);
3584 /* Parse a statement (C90 6.6, C99 6.8).
3589 expression-statement
3597 expression-statement:
3600 selection-statement:
3604 iteration-statement:
3613 return expression[opt] ;
3626 objc-throw-statement
3627 objc-try-catch-statement
3628 objc-synchronized-statement
3630 objc-throw-statement:
3644 parallel-for-construct
3645 parallel-sections-construct
3652 parallel-directive structured-block
3655 for-directive iteration-statement
3658 sections-directive section-scope
3661 single-directive structured-block
3663 parallel-for-construct:
3664 parallel-for-directive iteration-statement
3666 parallel-sections-construct:
3667 parallel-sections-directive section-scope
3670 master-directive structured-block
3673 critical-directive structured-block
3676 atomic-directive expression-statement
3679 ordered-directive structured-block */
3682 c_parser_statement (c_parser *parser)
3684 while (c_parser_next_token_is_keyword (parser, RID_CASE)
3685 || c_parser_next_token_is_keyword (parser, RID_DEFAULT)
3686 || (c_parser_next_token_is (parser, CPP_NAME)
3687 && c_parser_peek_2nd_token (parser)->type == CPP_COLON))
3688 c_parser_label (parser);
3689 c_parser_statement_after_labels (parser);
3692 /* Parse a statement, other than a labeled statement. */
3695 c_parser_statement_after_labels (c_parser *parser)
3697 location_t loc = c_parser_peek_token (parser)->location;
3698 tree stmt = NULL_TREE;
3699 switch (c_parser_peek_token (parser)->type)
3701 case CPP_OPEN_BRACE:
3702 add_stmt (c_parser_compound_statement (parser));
3705 switch (c_parser_peek_token (parser)->keyword)
3708 c_parser_if_statement (parser);
3711 c_parser_switch_statement (parser);
3714 c_parser_while_statement (parser);
3717 c_parser_do_statement (parser);
3720 c_parser_for_statement (parser);
3723 c_parser_consume_token (parser);
3724 if (c_parser_next_token_is (parser, CPP_NAME))
3726 stmt = c_finish_goto_label (c_parser_peek_token (parser)->value);
3727 c_parser_consume_token (parser);
3729 else if (c_parser_next_token_is (parser, CPP_MULT))
3731 c_parser_consume_token (parser);
3732 stmt = c_finish_goto_ptr (c_parser_expression (parser).value);
3735 c_parser_error (parser, "expected identifier or %<*%>");
3736 goto expect_semicolon;
3738 c_parser_consume_token (parser);
3739 stmt = c_finish_bc_stmt (&c_cont_label, false);
3740 goto expect_semicolon;
3742 c_parser_consume_token (parser);
3743 stmt = c_finish_bc_stmt (&c_break_label, true);
3744 goto expect_semicolon;
3746 c_parser_consume_token (parser);
3747 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
3749 stmt = c_finish_return (NULL_TREE);
3750 c_parser_consume_token (parser);
3754 stmt = c_finish_return (c_parser_expression_conv (parser).value);
3755 goto expect_semicolon;
3759 stmt = c_parser_asm_statement (parser);
3762 gcc_assert (c_dialect_objc ());
3763 c_parser_consume_token (parser);
3764 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
3766 stmt = objc_build_throw_stmt (NULL_TREE);
3767 c_parser_consume_token (parser);
3772 = objc_build_throw_stmt (c_parser_expression (parser).value);
3773 goto expect_semicolon;
3777 gcc_assert (c_dialect_objc ());
3778 c_parser_objc_try_catch_statement (parser);
3780 case RID_AT_SYNCHRONIZED:
3781 gcc_assert (c_dialect_objc ());
3782 c_parser_objc_synchronized_statement (parser);
3789 c_parser_consume_token (parser);
3791 case CPP_CLOSE_PAREN:
3792 case CPP_CLOSE_SQUARE:
3793 /* Avoid infinite loop in error recovery:
3794 c_parser_skip_until_found stops at a closing nesting
3795 delimiter without consuming it, but here we need to consume
3796 it to proceed further. */
3797 c_parser_error (parser, "expected statement");
3798 c_parser_consume_token (parser);
3801 c_parser_pragma (parser, pragma_stmt);
3805 stmt = c_finish_expr_stmt (c_parser_expression_conv (parser).value);
3807 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
3810 /* Two cases cannot and do not have line numbers associated: If stmt
3811 is degenerate, such as "2;", then stmt is an INTEGER_CST, which
3812 cannot hold line numbers. But that's OK because the statement
3813 will either be changed to a MODIFY_EXPR during gimplification of
3814 the statement expr, or discarded. If stmt was compound, but
3815 without new variables, we will have skipped the creation of a
3816 BIND and will have a bare STATEMENT_LIST. But that's OK because
3817 (recursively) all of the component statements should already have
3818 line numbers assigned. ??? Can we discard no-op statements
3820 if (stmt && EXPR_P (stmt))
3821 SET_EXPR_LOCATION (stmt, loc);
3824 /* Parse a parenthesized condition from an if, do or while statement.
3830 c_parser_paren_condition (c_parser *parser)
3834 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
3835 return error_mark_node;
3836 loc = c_parser_peek_token (parser)->location;
3837 cond = c_objc_common_truthvalue_conversion
3838 (c_parser_expression_conv (parser).value);
3840 SET_EXPR_LOCATION (cond, loc);
3841 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
3845 /* Parse a statement which is a block in C99. */
3848 c_parser_c99_block_statement (c_parser *parser)
3850 tree block = c_begin_compound_stmt (flag_isoc99);
3851 c_parser_statement (parser);
3852 return c_end_compound_stmt (block, flag_isoc99);
3855 /* Parse the body of an if statement or the else half thereof. This
3856 is just parsing a statement but (a) it is a block in C99, (b) we
3857 track whether the body is an if statement for the sake of
3858 -Wparentheses warnings, (c) we handle an empty body specially for
3859 the sake of -Wextra warnings. */
3862 c_parser_if_body (c_parser *parser, bool *if_p)
3864 tree block = c_begin_compound_stmt (flag_isoc99);
3865 while (c_parser_next_token_is_keyword (parser, RID_CASE)
3866 || c_parser_next_token_is_keyword (parser, RID_DEFAULT)
3867 || (c_parser_next_token_is (parser, CPP_NAME)
3868 && c_parser_peek_2nd_token (parser)->type == CPP_COLON))
3869 c_parser_label (parser);
3870 *if_p = c_parser_next_token_is_keyword (parser, RID_IF);
3871 if (extra_warnings && c_parser_next_token_is (parser, CPP_SEMICOLON))
3872 add_stmt (build_empty_stmt ());
3873 c_parser_statement_after_labels (parser);
3874 return c_end_compound_stmt (block, flag_isoc99);
3877 /* Parse an if statement (C90 6.6.4, C99 6.8.4).
3880 if ( expression ) statement
3881 if ( expression ) statement else statement
3885 c_parser_if_statement (c_parser *parser)
3890 bool first_if = false, second_if = false;
3891 tree first_body, second_body;
3892 gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF));
3893 c_parser_consume_token (parser);
3894 block = c_begin_compound_stmt (flag_isoc99);
3895 loc = c_parser_peek_token (parser)->location;
3896 cond = c_parser_paren_condition (parser);
3897 first_body = c_parser_if_body (parser, &first_if);
3898 if (c_parser_next_token_is_keyword (parser, RID_ELSE))
3900 c_parser_consume_token (parser);
3901 second_body = c_parser_if_body (parser, &second_if);
3904 second_body = NULL_TREE;
3905 c_finish_if_stmt (loc, cond, first_body, second_body, first_if);
3906 add_stmt (c_end_compound_stmt (block, flag_isoc99));
3909 /* Parse a switch statement (C90 6.6.4, C99 6.8.4).
3912 switch (expression) statement
3916 c_parser_switch_statement (c_parser *parser)
3918 tree block, expr, body, save_break;
3919 gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH));
3920 c_parser_consume_token (parser);
3921 block = c_begin_compound_stmt (flag_isoc99);
3922 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
3924 expr = c_parser_expression (parser).value;
3925 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
3928 expr = error_mark_node;
3929 c_start_case (expr);
3930 save_break = c_break_label;
3931 c_break_label = NULL_TREE;
3932 body = c_parser_c99_block_statement (parser);
3933 c_finish_case (body);
3935 add_stmt (build1 (LABEL_EXPR, void_type_node, c_break_label));
3936 c_break_label = save_break;
3937 add_stmt (c_end_compound_stmt (block, flag_isoc99));
3940 /* Parse a while statement (C90 6.6.5, C99 6.8.5).
3943 APPLE LOCAL begin for-fsf-4_4 3274130 5295549
3944 while attributes (expression) statement
3946 The use of attributes is a GNU extension.
3947 APPLE LOCAL end for-fsf-4_4 3274130 5295549
3951 c_parser_while_statement (c_parser *parser)
3953 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
3954 tree block, cond, body, save_break, save_cont, attrs;
3955 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
3957 gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE));
3958 c_parser_consume_token (parser);
3959 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
3960 attrs = c_parser_attributes (parser);
3961 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
3962 block = c_begin_compound_stmt (flag_isoc99);
3963 loc = c_parser_peek_token (parser)->location;
3964 cond = c_parser_paren_condition (parser);
3965 save_break = c_break_label;
3966 c_break_label = NULL_TREE;
3967 save_cont = c_cont_label;
3968 c_cont_label = NULL_TREE;
3969 body = c_parser_c99_block_statement (parser);
3970 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
3971 c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, attrs,
3973 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
3974 add_stmt (c_end_compound_stmt (block, flag_isoc99));
3975 c_break_label = save_break;
3976 c_cont_label = save_cont;
3979 /* Parse a do statement (C90 6.6.5, C99 6.8.5).
3982 APPLE LOCAL begin for-fsf-4_4 3274130 5295549
3983 do attributes statement while ( expression ) ;
3985 The use of attributes is a GNU extension.
3986 APPLE LOCAL end for-fsf-4_4 3274130 5295549
3990 c_parser_do_statement (c_parser *parser)
3992 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
3993 tree block, cond, body, save_break, save_cont, new_break, new_cont, attrs;
3994 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
3996 gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO));
3997 c_parser_consume_token (parser);
3998 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
3999 attrs = c_parser_attributes (parser);
4000 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
4001 block = c_begin_compound_stmt (flag_isoc99);
4002 loc = c_parser_peek_token (parser)->location;
4003 save_break = c_break_label;
4004 c_break_label = NULL_TREE;
4005 save_cont = c_cont_label;
4006 c_cont_label = NULL_TREE;
4007 body = c_parser_c99_block_statement (parser);
4008 c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>");
4009 new_break = c_break_label;
4010 c_break_label = save_break;
4011 new_cont = c_cont_label;
4012 c_cont_label = save_cont;
4013 cond = c_parser_paren_condition (parser);
4014 if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
4015 c_parser_skip_to_end_of_block_or_statement (parser);
4016 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
4017 c_finish_loop (loc, cond, NULL, body, new_break, new_cont, attrs, false);
4018 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
4019 add_stmt (c_end_compound_stmt (block, flag_isoc99));
4022 /* Parse a for statement (C90 6.6.5, C99 6.8.5).
4025 APPLE LOCAL begin for-fsf-4_4 3274130 5295549
4026 for attributes ( expression[opt] ; expression[opt] ; expression[opt] ) \
4028 for attributes ( nested-declaration expression[opt] ; expression[opt] ) \
4031 The form with a declaration is new in C99.
4033 The use of attributes is a GNU extension.
4035 APPLE LOCAL end for-fsf-4_4 3274130 5295549
4036 ??? In accordance with the old parser, the declaration may be a
4037 nested function, which is then rejected in check_for_loop_decls,
4038 but does it make any sense for this to be included in the grammar?
4039 Note in particular that the nested function does not include a
4040 trailing ';', whereas the "declaration" production includes one.
4041 Also, can we reject bad declarations earlier and cheaper than
4042 check_for_loop_decls? */
4045 c_parser_for_statement (c_parser *parser)
4047 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
4048 tree block, cond, incr, save_break, save_cont, body, attrs;
4049 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
4051 gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR));
4052 loc = c_parser_peek_token (parser)->location;
4053 c_parser_consume_token (parser);
4054 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
4055 attrs = c_parser_attributes (parser);
4056 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
4057 block = c_begin_compound_stmt (flag_isoc99);
4058 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
4060 /* Parse the initialization declaration or expression. */
4061 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
4063 c_parser_consume_token (parser);
4064 c_finish_expr_stmt (NULL_TREE);
4066 else if (c_parser_next_token_starts_declspecs (parser))
4068 c_parser_declaration_or_fndef (parser, true, true, true, true);
4069 check_for_loop_decls ();
4071 else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION))
4073 /* __extension__ can start a declaration, but is also an
4074 unary operator that can start an expression. Consume all
4075 but the last of a possible series of __extension__ to
4077 while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD
4078 && (c_parser_peek_2nd_token (parser)->keyword
4080 c_parser_consume_token (parser);
4081 if (c_token_starts_declspecs (c_parser_peek_2nd_token (parser)))
4084 ext = disable_extension_diagnostics ();
4085 c_parser_consume_token (parser);
4086 c_parser_declaration_or_fndef (parser, true, true, true, true);
4087 restore_extension_diagnostics (ext);
4088 check_for_loop_decls ();
4096 c_finish_expr_stmt (c_parser_expression (parser).value);
4097 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
4099 /* Parse the loop condition. */
4100 loc = c_parser_peek_token (parser)->location;
4101 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
4103 c_parser_consume_token (parser);
4108 tree ocond = c_parser_expression_conv (parser).value;
4109 cond = c_objc_common_truthvalue_conversion (ocond);
4111 SET_EXPR_LOCATION (cond, loc);
4112 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
4114 /* Parse the increment expression. */
4115 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4116 incr = c_process_expr_stmt (NULL_TREE);
4118 incr = c_process_expr_stmt (c_parser_expression (parser).value);
4119 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
4123 cond = error_mark_node;
4124 incr = error_mark_node;
4126 save_break = c_break_label;
4127 c_break_label = NULL_TREE;
4128 save_cont = c_cont_label;
4129 c_cont_label = NULL_TREE;
4130 body = c_parser_c99_block_statement (parser);
4131 /* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \
4132 c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, attrs,
4134 /* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \
4135 add_stmt (c_end_compound_stmt (block, flag_isoc99));
4136 c_break_label = save_break;
4137 c_cont_label = save_cont;
4140 /* Parse an asm statement, a GNU extension. This is a full-blown asm
4141 statement with inputs, outputs, clobbers, and volatile tag
4145 asm type-qualifier[opt] ( asm-argument ) ;
4149 asm-string-literal : asm-operands[opt]
4150 asm-string-literal : asm-operands[opt] : asm-operands[opt]
4151 asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers
4153 Qualifiers other than volatile are accepted in the syntax but
4157 c_parser_asm_statement (c_parser *parser)
4159 tree quals, str, outputs, inputs, clobbers, ret;
4161 gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM));
4162 c_parser_consume_token (parser);
4163 if (c_parser_next_token_is_keyword (parser, RID_VOLATILE))
4165 quals = c_parser_peek_token (parser)->value;
4166 c_parser_consume_token (parser);
4168 else if (c_parser_next_token_is_keyword (parser, RID_CONST)
4169 || c_parser_next_token_is_keyword (parser, RID_RESTRICT))
4171 warning (0, "%E qualifier ignored on asm",
4172 c_parser_peek_token (parser)->value);
4174 c_parser_consume_token (parser);
4178 /* ??? Follow the C++ parser rather than using the
4179 c_lex_string_translate kludge. */
4180 c_lex_string_translate = 0;
4181 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
4183 c_lex_string_translate = 1;
4186 str = c_parser_asm_string_literal (parser);
4187 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4190 outputs = NULL_TREE;
4192 clobbers = NULL_TREE;
4195 if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
4197 c_lex_string_translate = 1;
4198 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
4202 /* Parse outputs. */
4203 if (c_parser_next_token_is (parser, CPP_COLON)
4204 || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4205 outputs = NULL_TREE;
4207 outputs = c_parser_asm_operands (parser, false);
4208 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4211 clobbers = NULL_TREE;
4214 if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
4216 c_lex_string_translate = 1;
4217 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
4221 if (c_parser_next_token_is (parser, CPP_COLON)
4222 || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4225 inputs = c_parser_asm_operands (parser, true);
4226 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
4228 clobbers = NULL_TREE;
4231 if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
4233 c_lex_string_translate = 1;
4234 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
4237 /* Parse clobbers. */
4238 clobbers = c_parser_asm_clobbers (parser);
4240 c_lex_string_translate = 1;
4241 if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
4243 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
4246 if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
4247 c_parser_skip_to_end_of_block_or_statement (parser);
4248 ret = build_asm_stmt (quals, build_asm_expr (str, outputs, inputs,
4253 /* Parse asm operands, a GNU extension. If CONVERT_P (for inputs but
4254 not outputs), apply the default conversion of functions and arrays
4259 asm-operands , asm-operand
4262 asm-string-literal ( expression )
4263 [ identifier ] asm-string-literal ( expression )
4267 c_parser_asm_operands (c_parser *parser, bool convert_p)
4269 tree list = NULL_TREE;
4274 if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE))
4276 c_parser_consume_token (parser);
4277 if (c_parser_next_token_is (parser, CPP_NAME))
4279 tree id = c_parser_peek_token (parser)->value;
4280 c_parser_consume_token (parser);
4281 name = build_string (IDENTIFIER_LENGTH (id),
4282 IDENTIFIER_POINTER (id));
4286 c_parser_error (parser, "expected identifier");
4287 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL);
4290 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
4295 str = c_parser_asm_string_literal (parser);
4296 if (str == NULL_TREE)
4298 c_lex_string_translate = 1;
4299 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
4301 c_lex_string_translate = 0;
4304 expr = c_parser_expression (parser);
4306 expr = default_function_array_conversion (expr);
4307 c_lex_string_translate = 0;
4308 if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
4310 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
4313 list = chainon (list, build_tree_list (build_tree_list (name, str),
4315 if (c_parser_next_token_is (parser, CPP_COMMA))
4316 c_parser_consume_token (parser);
4323 /* Parse asm clobbers, a GNU extension.
4327 asm-clobbers , asm-string-literal
4331 c_parser_asm_clobbers (c_parser *parser)
4333 tree list = NULL_TREE;
4336 tree str = c_parser_asm_string_literal (parser);
4338 list = tree_cons (NULL_TREE, str, list);
4341 if (c_parser_next_token_is (parser, CPP_COMMA))
4342 c_parser_consume_token (parser);
4349 /* Parse an expression other than a compound expression; that is, an
4350 assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not
4351 NULL then it is an Objective-C message expression which is the
4352 primary-expression starting the expression as an initializer.
4354 assignment-expression:
4355 conditional-expression
4356 unary-expression assignment-operator assignment-expression
4358 assignment-operator: one of
4359 = *= /= %= += -= <<= >>= &= ^= |=
4361 In GNU C we accept any conditional expression on the LHS and
4362 diagnose the invalid lvalue rather than producing a syntax
4365 static struct c_expr
4366 c_parser_expr_no_commas (c_parser *parser, struct c_expr *after)
4368 struct c_expr lhs, rhs, ret;
4369 enum tree_code code;
4370 gcc_assert (!after || c_dialect_objc ());
4371 lhs = c_parser_conditional_expression (parser, after);
4372 switch (c_parser_peek_token (parser)->type)
4381 code = TRUNC_DIV_EXPR;
4384 code = TRUNC_MOD_EXPR;
4399 code = BIT_AND_EXPR;
4402 code = BIT_XOR_EXPR;
4405 code = BIT_IOR_EXPR;
4410 c_parser_consume_token (parser);
4411 rhs = c_parser_expr_no_commas (parser, NULL);
4412 rhs = default_function_array_conversion (rhs);
4413 ret.value = build_modify_expr (lhs.value, code, rhs.value);
4414 if (code == NOP_EXPR)
4415 ret.original_code = MODIFY_EXPR;
4418 TREE_NO_WARNING (ret.value) = 1;
4419 ret.original_code = ERROR_MARK;
4424 /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER
4425 is not NULL then it is an Objective-C message expression which is
4426 the primary-expression starting the expression as an initializer.
4428 conditional-expression:
4429 logical-OR-expression
4430 logical-OR-expression ? expression : conditional-expression
4434 conditional-expression:
4435 logical-OR-expression ? : conditional-expression
4438 static struct c_expr
4439 c_parser_conditional_expression (c_parser *parser, struct c_expr *after)
4441 struct c_expr cond, exp1, exp2, ret;
4442 gcc_assert (!after || c_dialect_objc ());
4443 cond = c_parser_binary_expression (parser, after);
4444 if (c_parser_next_token_is_not (parser, CPP_QUERY))
4446 cond = default_function_array_conversion (cond);
4447 c_parser_consume_token (parser);
4448 if (c_parser_next_token_is (parser, CPP_COLON))
4451 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
4452 /* Make sure first operand is calculated only once. */
4453 exp1.value = save_expr (default_conversion (cond.value));
4454 cond.value = c_objc_common_truthvalue_conversion (exp1.value);
4455 skip_evaluation += cond.value == truthvalue_true_node;
4460 = c_objc_common_truthvalue_conversion
4461 (default_conversion (cond.value));
4462 skip_evaluation += cond.value == truthvalue_false_node;
4463 exp1 = c_parser_expression_conv (parser);
4464 skip_evaluation += ((cond.value == truthvalue_true_node)
4465 - (cond.value == truthvalue_false_node));
4467 if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
4469 skip_evaluation -= cond.value == truthvalue_true_node;
4470 ret.value = error_mark_node;
4471 ret.original_code = ERROR_MARK;
4474 exp2 = c_parser_conditional_expression (parser, NULL);
4475 exp2 = default_function_array_conversion (exp2);
4476 skip_evaluation -= cond.value == truthvalue_true_node;
4477 ret.value = build_conditional_expr (cond.value, exp1.value, exp2.value);
4478 ret.original_code = ERROR_MARK;
4482 /* Parse a binary expression; that is, a logical-OR-expression (C90
4483 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is
4484 an Objective-C message expression which is the primary-expression
4485 starting the expression as an initializer.
4487 multiplicative-expression:
4489 multiplicative-expression * cast-expression
4490 multiplicative-expression / cast-expression
4491 multiplicative-expression % cast-expression
4493 additive-expression:
4494 multiplicative-expression
4495 additive-expression + multiplicative-expression
4496 additive-expression - multiplicative-expression
4500 shift-expression << additive-expression
4501 shift-expression >> additive-expression
4503 relational-expression:
4505 relational-expression < shift-expression
4506 relational-expression > shift-expression
4507 relational-expression <= shift-expression
4508 relational-expression >= shift-expression
4510 equality-expression:
4511 relational-expression
4512 equality-expression == relational-expression
4513 equality-expression != relational-expression
4517 AND-expression & equality-expression
4519 exclusive-OR-expression:
4521 exclusive-OR-expression ^ AND-expression
4523 inclusive-OR-expression:
4524 exclusive-OR-expression
4525 inclusive-OR-expression | exclusive-OR-expression
4527 logical-AND-expression:
4528 inclusive-OR-expression
4529 logical-AND-expression && inclusive-OR-expression
4531 logical-OR-expression:
4532 logical-AND-expression
4533 logical-OR-expression || logical-AND-expression
4536 static struct c_expr
4537 c_parser_binary_expression (c_parser *parser, struct c_expr *after)
4539 /* A binary expression is parsed using operator-precedence parsing,
4540 with the operands being cast expressions. All the binary
4541 operators are left-associative. Thus a binary expression is of
4544 E0 op1 E1 op2 E2 ...
4546 which we represent on a stack. On the stack, the precedence
4547 levels are strictly increasing. When a new operator is
4548 encountered of higher precedence than that at the top of the
4549 stack, it is pushed; its LHS is the top expression, and its RHS
4550 is everything parsed until it is popped. When a new operator is
4551 encountered with precedence less than or equal to that at the top
4552 of the stack, triples E[i-1] op[i] E[i] are popped and replaced
4553 by the result of the operation until the operator at the top of
4554 the stack has lower precedence than the new operator or there is
4555 only one element on the stack; then the top expression is the LHS
4556 of the new operator. In the case of logical AND and OR
4557 expressions, we also need to adjust skip_evaluation as
4558 appropriate when the operators are pushed and popped. */
4560 /* The precedence levels, where 0 is a dummy lowest level used for
4561 the bottom of the stack. */
4577 /* The expression at this stack level. */
4579 /* The precedence of the operator on its left, PREC_NONE at the
4580 bottom of the stack. */
4582 /* The operation on its left. */
4588 switch (stack[sp].op) \
4590 case TRUTH_ANDIF_EXPR: \
4591 skip_evaluation -= stack[sp - 1].expr.value == truthvalue_false_node; \
4593 case TRUTH_ORIF_EXPR: \
4594 skip_evaluation -= stack[sp - 1].expr.value == truthvalue_true_node; \
4599 stack[sp - 1].expr \
4600 = default_function_array_conversion (stack[sp - 1].expr); \
4602 = default_function_array_conversion (stack[sp].expr); \
4603 stack[sp - 1].expr = parser_build_binary_op (stack[sp].op, \
4604 stack[sp - 1].expr, \
4608 gcc_assert (!after || c_dialect_objc ());
4609 stack[0].expr = c_parser_cast_expression (parser, after);
4610 stack[0].prec = PREC_NONE;
4615 enum tree_code ocode;
4618 switch (c_parser_peek_token (parser)->type)
4626 ocode = TRUNC_DIV_EXPR;
4630 ocode = TRUNC_MOD_EXPR;
4642 ocode = LSHIFT_EXPR;
4646 ocode = RSHIFT_EXPR;
4660 case CPP_GREATER_EQ:
4673 oprec = PREC_BITAND;
4674 ocode = BIT_AND_EXPR;
4677 oprec = PREC_BITXOR;
4678 ocode = BIT_XOR_EXPR;
4682 ocode = BIT_IOR_EXPR;
4685 oprec = PREC_LOGAND;
4686 ocode = TRUTH_ANDIF_EXPR;
4690 ocode = TRUTH_ORIF_EXPR;
4693 /* Not a binary operator, so end of the binary
4697 c_parser_consume_token (parser);
4698 while (oprec <= stack[sp].prec)
4702 case TRUTH_ANDIF_EXPR:
4704 = default_function_array_conversion (stack[sp].expr);
4705 stack[sp].expr.value = c_objc_common_truthvalue_conversion
4706 (default_conversion (stack[sp].expr.value));
4707 skip_evaluation += stack[sp].expr.value == truthvalue_false_node;
4709 case TRUTH_ORIF_EXPR:
4711 = default_function_array_conversion (stack[sp].expr);
4712 stack[sp].expr.value = c_objc_common_truthvalue_conversion
4713 (default_conversion (stack[sp].expr.value));
4714 skip_evaluation += stack[sp].expr.value == truthvalue_true_node;
4720 stack[sp].expr = c_parser_cast_expression (parser, NULL);
4721 stack[sp].prec = oprec;
4722 stack[sp].op = ocode;
4727 return stack[0].expr;
4731 /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not
4732 NULL then it is an Objective-C message expression which is the
4733 primary-expression starting the expression as an initializer.
4737 ( type-name ) unary-expression
4740 static struct c_expr
4741 c_parser_cast_expression (c_parser *parser, struct c_expr *after)
4743 gcc_assert (!after || c_dialect_objc ());
4745 return c_parser_postfix_expression_after_primary (parser, *after);
4746 /* If the expression begins with a parenthesized type name, it may
4747 be either a cast or a compound literal; we need to see whether
4748 the next character is '{' to tell the difference. If not, it is
4749 an unary expression. */
4750 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
4751 && c_token_starts_typename (c_parser_peek_2nd_token (parser)))
4753 struct c_type_name *type_name;
4756 c_parser_consume_token (parser);
4757 type_name = c_parser_type_name (parser);
4758 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
4759 if (type_name == NULL)
4761 ret.value = error_mark_node;
4762 ret.original_code = ERROR_MARK;
4766 /* Save casted types in the function's used types hash table. */
4767 used_types_insert (type_name->specs->type);
4769 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
4770 return c_parser_postfix_expression_after_paren_type (parser,
4772 expr = c_parser_cast_expression (parser, NULL);
4773 expr = default_function_array_conversion (expr);
4774 ret.value = c_cast_expr (type_name, expr.value);
4775 ret.original_code = ERROR_MARK;
4779 return c_parser_unary_expression (parser);
4782 /* Parse an unary expression (C90 6.3.3, C99 6.5.3).
4788 unary-operator cast-expression
4789 sizeof unary-expression
4790 sizeof ( type-name )
4792 unary-operator: one of
4798 __alignof__ unary-expression
4799 __alignof__ ( type-name )
4802 unary-operator: one of
4803 __extension__ __real__ __imag__
4805 In addition, the GNU syntax treats ++ and -- as unary operators, so
4806 they may be applied to cast expressions with errors for non-lvalues
4809 static struct c_expr
4810 c_parser_unary_expression (c_parser *parser)
4813 struct c_expr ret, op;
4814 switch (c_parser_peek_token (parser)->type)
4817 c_parser_consume_token (parser);
4818 op = c_parser_cast_expression (parser, NULL);
4819 op = default_function_array_conversion (op);
4820 return parser_build_unary_op (PREINCREMENT_EXPR, op);
4821 case CPP_MINUS_MINUS:
4822 c_parser_consume_token (parser);
4823 op = c_parser_cast_expression (parser, NULL);
4824 op = default_function_array_conversion (op);
4825 return parser_build_unary_op (PREDECREMENT_EXPR, op);
4827 c_parser_consume_token (parser);
4828 return parser_build_unary_op (ADDR_EXPR,
4829 c_parser_cast_expression (parser, NULL));
4831 c_parser_consume_token (parser);
4832 op = c_parser_cast_expression (parser, NULL);
4833 op = default_function_array_conversion (op);
4834 ret.value = build_indirect_ref (op.value, "unary *");
4835 ret.original_code = ERROR_MARK;
4838 c_parser_consume_token (parser);
4839 if (!c_dialect_objc () && !in_system_header)
4840 warning (OPT_Wtraditional,
4841 "traditional C rejects the unary plus operator");
4842 op = c_parser_cast_expression (parser, NULL);
4843 op = default_function_array_conversion (op);
4844 return parser_build_unary_op (CONVERT_EXPR, op);
4846 c_parser_consume_token (parser);
4847 op = c_parser_cast_expression (parser, NULL);
4848 op = default_function_array_conversion (op);
4849 return parser_build_unary_op (NEGATE_EXPR, op);
4851 c_parser_consume_token (parser);
4852 op = c_parser_cast_expression (parser, NULL);
4853 op = default_function_array_conversion (op);
4854 return parser_build_unary_op (BIT_NOT_EXPR, op);
4856 c_parser_consume_token (parser);
4857 op = c_parser_cast_expression (parser, NULL);
4858 op = default_function_array_conversion (op);
4859 return parser_build_unary_op (TRUTH_NOT_EXPR, op);
4861 /* Refer to the address of a label as a pointer. */
4862 c_parser_consume_token (parser);
4863 if (c_parser_next_token_is (parser, CPP_NAME))
4865 ret.value = finish_label_address_expr
4866 (c_parser_peek_token (parser)->value);
4867 c_parser_consume_token (parser);
4871 c_parser_error (parser, "expected identifier");
4872 ret.value = error_mark_node;
4874 ret.original_code = ERROR_MARK;
4877 switch (c_parser_peek_token (parser)->keyword)
4880 return c_parser_sizeof_expression (parser);
4882 return c_parser_alignof_expression (parser);
4884 c_parser_consume_token (parser);
4885 ext = disable_extension_diagnostics ();
4886 ret = c_parser_cast_expression (parser, NULL);
4887 restore_extension_diagnostics (ext);
4890 c_parser_consume_token (parser);
4891 op = c_parser_cast_expression (parser, NULL);
4892 op = default_function_array_conversion (op);
4893 return parser_build_unary_op (REALPART_EXPR, op);
4895 c_parser_consume_token (parser);
4896 op = c_parser_cast_expression (parser, NULL);
4897 op = default_function_array_conversion (op);
4898 return parser_build_unary_op (IMAGPART_EXPR, op);
4900 return c_parser_postfix_expression (parser);
4903 return c_parser_postfix_expression (parser);
4907 /* Parse a sizeof expression. */
4909 static struct c_expr
4910 c_parser_sizeof_expression (c_parser *parser)
4913 gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF));
4914 c_parser_consume_token (parser);
4917 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
4918 && c_token_starts_typename (c_parser_peek_2nd_token (parser)))
4920 /* Either sizeof ( type-name ) or sizeof unary-expression
4921 starting with a compound literal. */
4922 struct c_type_name *type_name;
4923 c_parser_consume_token (parser);
4924 type_name = c_parser_type_name (parser);
4925 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
4926 if (type_name == NULL)
4931 ret.value = error_mark_node;
4932 ret.original_code = ERROR_MARK;
4935 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
4937 expr = c_parser_postfix_expression_after_paren_type (parser,
4941 /* sizeof ( type-name ). */
4944 if (type_name->declarator->kind == cdk_array
4945 && type_name->declarator->u.array.vla_unspec_p)
4948 error ("%<[*]%> not allowed in other than a declaration");
4950 return c_expr_sizeof_type (type_name);
4954 expr = c_parser_unary_expression (parser);
4958 if (TREE_CODE (expr.value) == COMPONENT_REF
4959 && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1)))
4960 error ("%<sizeof%> applied to a bit-field");
4961 return c_expr_sizeof_expr (expr);
4965 /* Parse an alignof expression. */
4967 static struct c_expr
4968 c_parser_alignof_expression (c_parser *parser)
4971 gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF));
4972 c_parser_consume_token (parser);
4975 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
4976 && c_token_starts_typename (c_parser_peek_2nd_token (parser)))
4978 /* Either __alignof__ ( type-name ) or __alignof__
4979 unary-expression starting with a compound literal. */
4980 struct c_type_name *type_name;
4982 c_parser_consume_token (parser);
4983 type_name = c_parser_type_name (parser);
4984 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
4985 if (type_name == NULL)
4990 ret.value = error_mark_node;
4991 ret.original_code = ERROR_MARK;
4994 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
4996 expr = c_parser_postfix_expression_after_paren_type (parser,
5000 /* alignof ( type-name ). */
5003 ret.value = c_alignof (groktypename (type_name));
5004 ret.original_code = ERROR_MARK;
5010 expr = c_parser_unary_expression (parser);
5014 ret.value = c_alignof_expr (expr.value);
5015 ret.original_code = ERROR_MARK;
5020 /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2).
5024 postfix-expression [ expression ]
5025 postfix-expression ( argument-expression-list[opt] )
5026 postfix-expression . identifier
5027 postfix-expression -> identifier
5028 postfix-expression ++
5029 postfix-expression --
5030 ( type-name ) { initializer-list }
5031 ( type-name ) { initializer-list , }
5033 argument-expression-list:
5035 argument-expression-list , argument-expression
5047 (treated as a keyword in GNU C)
5050 ( compound-statement )
5051 __builtin_va_arg ( assignment-expression , type-name )
5052 __builtin_offsetof ( type-name , offsetof-member-designator )
5053 __builtin_choose_expr ( assignment-expression ,
5054 assignment-expression ,
5055 assignment-expression )
5056 __builtin_types_compatible_p ( type-name , type-name )
5058 offsetof-member-designator:
5060 offsetof-member-designator . identifier
5061 offsetof-member-designator [ expression ]
5066 [ objc-receiver objc-message-args ]
5067 @selector ( objc-selector-arg )
5068 @protocol ( identifier )
5069 @encode ( type-name )
5073 static struct c_expr
5074 c_parser_postfix_expression (c_parser *parser)
5076 struct c_expr expr, e1, e2, e3;
5077 struct c_type_name *t1, *t2;
5078 switch (c_parser_peek_token (parser)->type)
5083 expr.value = c_parser_peek_token (parser)->value;
5084 expr.original_code = ERROR_MARK;
5085 c_parser_consume_token (parser);
5089 expr.value = c_parser_peek_token (parser)->value;
5090 expr.original_code = STRING_CST;
5091 c_parser_consume_token (parser);
5093 case CPP_OBJC_STRING:
5094 gcc_assert (c_dialect_objc ());
5096 = objc_build_string_object (c_parser_peek_token (parser)->value);
5097 expr.original_code = ERROR_MARK;
5098 c_parser_consume_token (parser);
5101 if (c_parser_peek_token (parser)->id_kind != C_ID_ID)
5103 c_parser_error (parser, "expected expression");
5104 expr.value = error_mark_node;
5105 expr.original_code = ERROR_MARK;
5109 tree id = c_parser_peek_token (parser)->value;
5110 location_t loc = c_parser_peek_token (parser)->location;
5111 c_parser_consume_token (parser);
5112 expr.value = build_external_ref (id,
5113 (c_parser_peek_token (parser)->type
5114 == CPP_OPEN_PAREN), loc);
5115 expr.original_code = ERROR_MARK;
5118 case CPP_OPEN_PAREN:
5119 /* A parenthesized expression, statement expression or compound
5121 if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE)
5123 /* A statement expression. */
5125 c_parser_consume_token (parser);
5126 c_parser_consume_token (parser);
5127 if (cur_stmt_list == NULL)
5129 error ("braced-group within expression allowed "
5130 "only inside a function");
5131 parser->error = true;
5132 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
5133 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5134 expr.value = error_mark_node;
5135 expr.original_code = ERROR_MARK;
5138 stmt = c_begin_stmt_expr ();
5139 c_parser_compound_statement_nostart (parser);
5140 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5143 pedwarn ("ISO C forbids braced-groups within expressions");
5144 expr.value = c_finish_stmt_expr (stmt);
5145 expr.original_code = ERROR_MARK;
5147 else if (c_token_starts_typename (c_parser_peek_2nd_token (parser)))
5149 /* A compound literal. ??? Can we actually get here rather
5150 than going directly to
5151 c_parser_postfix_expression_after_paren_type from
5153 struct c_type_name *type_name;
5154 c_parser_consume_token (parser);
5155 type_name = c_parser_type_name (parser);
5156 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5158 if (type_name == NULL)
5160 expr.value = error_mark_node;
5161 expr.original_code = ERROR_MARK;
5164 expr = c_parser_postfix_expression_after_paren_type (parser,
5169 /* A parenthesized expression. */
5170 c_parser_consume_token (parser);
5171 expr = c_parser_expression (parser);
5172 if (TREE_CODE (expr.value) == MODIFY_EXPR)
5173 TREE_NO_WARNING (expr.value) = 1;
5174 expr.original_code = ERROR_MARK;
5175 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5180 switch (c_parser_peek_token (parser)->keyword)
5182 case RID_FUNCTION_NAME:
5183 case RID_PRETTY_FUNCTION_NAME:
5184 case RID_C99_FUNCTION_NAME:
5185 expr.value = fname_decl (c_parser_peek_token (parser)->keyword,
5186 c_parser_peek_token (parser)->value);
5187 expr.original_code = ERROR_MARK;
5188 c_parser_consume_token (parser);
5191 c_parser_consume_token (parser);
5192 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5194 expr.value = error_mark_node;
5195 expr.original_code = ERROR_MARK;
5198 e1 = c_parser_expr_no_commas (parser, NULL);
5199 if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
5201 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5202 expr.value = error_mark_node;
5203 expr.original_code = ERROR_MARK;
5206 t1 = c_parser_type_name (parser);
5207 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5211 expr.value = error_mark_node;
5212 expr.original_code = ERROR_MARK;
5216 expr.value = build_va_arg (e1.value, groktypename (t1));
5217 expr.original_code = ERROR_MARK;
5221 c_parser_consume_token (parser);
5222 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5224 expr.value = error_mark_node;
5225 expr.original_code = ERROR_MARK;
5228 t1 = c_parser_type_name (parser);
5231 expr.value = error_mark_node;
5232 expr.original_code = ERROR_MARK;
5235 if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
5237 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5238 expr.value = error_mark_node;
5239 expr.original_code = ERROR_MARK;
5243 tree type = groktypename (t1);
5245 if (type == error_mark_node)
5246 offsetof_ref = error_mark_node;
5248 offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node);
5249 /* Parse the second argument to __builtin_offsetof. We
5250 must have one identifier, and beyond that we want to
5251 accept sub structure and sub array references. */
5252 if (c_parser_next_token_is (parser, CPP_NAME))
5254 offsetof_ref = build_component_ref
5255 (offsetof_ref, c_parser_peek_token (parser)->value);
5256 c_parser_consume_token (parser);
5257 while (c_parser_next_token_is (parser, CPP_DOT)
5258 || c_parser_next_token_is (parser,
5261 if (c_parser_next_token_is (parser, CPP_DOT))
5263 c_parser_consume_token (parser);
5264 if (c_parser_next_token_is_not (parser,
5267 c_parser_error (parser, "expected identifier");
5270 offsetof_ref = build_component_ref
5272 c_parser_peek_token (parser)->value);
5273 c_parser_consume_token (parser);
5278 c_parser_consume_token (parser);
5279 idx = c_parser_expression (parser).value;
5280 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
5282 offsetof_ref = build_array_ref (offsetof_ref, idx);
5287 c_parser_error (parser, "expected identifier");
5288 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5290 expr.value = fold_offsetof (offsetof_ref, NULL_TREE);
5291 expr.original_code = ERROR_MARK;
5294 case RID_CHOOSE_EXPR:
5295 c_parser_consume_token (parser);
5296 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5298 expr.value = error_mark_node;
5299 expr.original_code = ERROR_MARK;
5302 e1 = c_parser_expr_no_commas (parser, NULL);
5303 if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
5305 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5306 expr.value = error_mark_node;
5307 expr.original_code = ERROR_MARK;
5310 e2 = c_parser_expr_no_commas (parser, NULL);
5311 if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
5313 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5314 expr.value = error_mark_node;
5315 expr.original_code = ERROR_MARK;
5318 e3 = c_parser_expr_no_commas (parser, NULL);
5319 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5324 c = fold (e1.value);
5325 if (TREE_CODE (c) != INTEGER_CST)
5326 error ("first argument to %<__builtin_choose_expr%> not"
5328 expr = integer_zerop (c) ? e3 : e2;
5331 case RID_TYPES_COMPATIBLE_P:
5332 c_parser_consume_token (parser);
5333 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5335 expr.value = error_mark_node;
5336 expr.original_code = ERROR_MARK;
5339 t1 = c_parser_type_name (parser);
5342 expr.value = error_mark_node;
5343 expr.original_code = ERROR_MARK;
5346 if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
5348 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5349 expr.value = error_mark_node;
5350 expr.original_code = ERROR_MARK;
5353 t2 = c_parser_type_name (parser);
5356 expr.value = error_mark_node;
5357 expr.original_code = ERROR_MARK;
5360 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5365 e1 = TYPE_MAIN_VARIANT (groktypename (t1));
5366 e2 = TYPE_MAIN_VARIANT (groktypename (t2));
5368 expr.value = comptypes (e1, e2)
5369 ? build_int_cst (NULL_TREE, 1)
5370 : build_int_cst (NULL_TREE, 0);
5371 expr.original_code = ERROR_MARK;
5374 case RID_AT_SELECTOR:
5375 gcc_assert (c_dialect_objc ());
5376 c_parser_consume_token (parser);
5377 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5379 expr.value = error_mark_node;
5380 expr.original_code = ERROR_MARK;
5384 tree sel = c_parser_objc_selector_arg (parser);
5385 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5387 expr.value = objc_build_selector_expr (sel);
5388 expr.original_code = ERROR_MARK;
5391 case RID_AT_PROTOCOL:
5392 gcc_assert (c_dialect_objc ());
5393 c_parser_consume_token (parser);
5394 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5396 expr.value = error_mark_node;
5397 expr.original_code = ERROR_MARK;
5400 if (c_parser_next_token_is_not (parser, CPP_NAME))
5402 c_parser_error (parser, "expected identifier");
5403 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5404 expr.value = error_mark_node;
5405 expr.original_code = ERROR_MARK;
5409 tree id = c_parser_peek_token (parser)->value;
5410 c_parser_consume_token (parser);
5411 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5413 expr.value = objc_build_protocol_expr (id);
5414 expr.original_code = ERROR_MARK;
5418 /* Extension to support C-structures in the archiver. */
5419 gcc_assert (c_dialect_objc ());
5420 c_parser_consume_token (parser);
5421 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
5423 expr.value = error_mark_node;
5424 expr.original_code = ERROR_MARK;
5427 t1 = c_parser_type_name (parser);
5430 expr.value = error_mark_node;
5431 expr.original_code = ERROR_MARK;
5432 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5435 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5438 tree type = groktypename (t1);
5439 expr.value = objc_build_encode_expr (type);
5440 expr.original_code = ERROR_MARK;
5444 c_parser_error (parser, "expected expression");
5445 expr.value = error_mark_node;
5446 expr.original_code = ERROR_MARK;
5450 case CPP_OPEN_SQUARE:
5451 if (c_dialect_objc ())
5453 tree receiver, args;
5454 c_parser_consume_token (parser);
5455 receiver = c_parser_objc_receiver (parser);
5456 args = c_parser_objc_message_args (parser);
5457 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
5459 expr.value = objc_build_message_expr (build_tree_list (receiver,
5461 expr.original_code = ERROR_MARK;
5464 /* Else fall through to report error. */
5466 c_parser_error (parser, "expected expression");
5467 expr.value = error_mark_node;
5468 expr.original_code = ERROR_MARK;
5471 return c_parser_postfix_expression_after_primary (parser, expr);
5474 /* Parse a postfix expression after a parenthesized type name: the
5475 brace-enclosed initializer of a compound literal, possibly followed
5476 by some postfix operators. This is separate because it is not
5477 possible to tell until after the type name whether a cast
5478 expression has a cast or a compound literal, or whether the operand
5479 of sizeof is a parenthesized type name or starts with a compound
5482 static struct c_expr
5483 c_parser_postfix_expression_after_paren_type (c_parser *parser,
5484 struct c_type_name *type_name)
5489 start_init (NULL_TREE, NULL, 0);
5490 type = groktypename (type_name);
5491 if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type))
5493 error ("compound literal has variable size");
5494 type = error_mark_node;
5496 init = c_parser_braced_init (parser, type, false);
5498 maybe_warn_string_init (type, init);
5500 if (pedantic && !flag_isoc99)
5501 pedwarn ("ISO C90 forbids compound literals");
5502 expr.value = build_compound_literal (type, init.value);
5503 expr.original_code = ERROR_MARK;
5504 return c_parser_postfix_expression_after_primary (parser, expr);
5507 /* Parse a postfix expression after the initial primary or compound
5508 literal; that is, parse a series of postfix operators. */
5510 static struct c_expr
5511 c_parser_postfix_expression_after_primary (c_parser *parser,
5514 tree ident, idx, exprlist;
5517 switch (c_parser_peek_token (parser)->type)
5519 case CPP_OPEN_SQUARE:
5520 /* Array reference. */
5521 c_parser_consume_token (parser);
5522 idx = c_parser_expression (parser).value;
5523 c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
5525 expr.value = build_array_ref (expr.value, idx);
5526 expr.original_code = ERROR_MARK;
5528 case CPP_OPEN_PAREN:
5529 /* Function call. */
5530 c_parser_consume_token (parser);
5531 if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
5532 exprlist = NULL_TREE;
5534 exprlist = c_parser_expr_list (parser, true);
5535 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
5537 expr.value = build_function_call (expr.value, exprlist);
5538 expr.original_code = ERROR_MARK;
5541 /* Structure element reference. */
5542 c_parser_consume_token (parser);
5543 expr = default_function_array_conversion (expr);
5544 if (c_parser_next_token_is (parser, CPP_NAME))
5545 ident = c_parser_peek_token (parser)->value;
5548 c_parser_error (parser, "expected identifier");
5549 expr.value = error_mark_node;
5550 expr.original_code = ERROR_MARK;
5553 c_parser_consume_token (parser);
5554 expr.value = build_component_ref (expr.value, ident);
5555 expr.original_code = ERROR_MARK;
5558 /* Structure element reference. */
5559 c_parser_consume_token (parser);
5560 expr = default_function_array_conversion (expr);
5561 if (c_parser_next_token_is (parser, CPP_NAME))
5562 ident = c_parser_peek_token (parser)->value;
5565 c_parser_error (parser, "expected identifier");
5566 expr.value = error_mark_node;
5567 expr.original_code = ERROR_MARK;
5570 c_parser_consume_token (parser);
5571 expr.value = build_component_ref (build_indirect_ref (expr.value,
5573 expr.original_code = ERROR_MARK;
5576 /* Postincrement. */
5577 c_parser_consume_token (parser);
5578 expr = default_function_array_conversion (expr);
5579 expr.value = build_unary_op (POSTINCREMENT_EXPR, expr.value, 0);
5580 expr.original_code = ERROR_MARK;
5582 case CPP_MINUS_MINUS:
5583 /* Postdecrement. */
5584 c_parser_consume_token (parser);
5585 expr = default_function_array_conversion (expr);
5586 expr.value = build_unary_op (POSTDECREMENT_EXPR, expr.value, 0);
5587 expr.original_code = ERROR_MARK;
5595 /* Parse an expression (C90 6.3.17, C99 6.5.17).
5598 assignment-expression
5599 expression , assignment-expression
5602 static struct c_expr
5603 c_parser_expression (c_parser *parser)
5606 expr = c_parser_expr_no_commas (parser, NULL);
5607 while (c_parser_next_token_is (parser, CPP_COMMA))
5610 c_parser_consume_token (parser);
5611 next = c_parser_expr_no_commas (parser, NULL);
5612 next = default_function_array_conversion (next);
5613 expr.value = build_compound_expr (expr.value, next.value);
5614 expr.original_code = COMPOUND_EXPR;
5619 /* Parse an expression and convert functions or arrays to
5622 static struct c_expr
5623 c_parser_expression_conv (c_parser *parser)
5626 expr = c_parser_expression (parser);
5627 expr = default_function_array_conversion (expr);
5631 /* Parse a non-empty list of expressions. If CONVERT_P, convert
5632 functions and arrays to pointers.
5635 assignment-expression
5636 nonempty-expr-list , assignment-expression
5640 c_parser_expr_list (c_parser *parser, bool convert_p)
5644 expr = c_parser_expr_no_commas (parser, NULL);
5646 expr = default_function_array_conversion (expr);
5647 ret = cur = build_tree_list (NULL_TREE, expr.value);
5648 while (c_parser_next_token_is (parser, CPP_COMMA))
5650 c_parser_consume_token (parser);
5651 expr = c_parser_expr_no_commas (parser, NULL);
5653 expr = default_function_array_conversion (expr);
5654 cur = TREE_CHAIN (cur) = build_tree_list (NULL_TREE, expr.value);
5660 /* Parse Objective-C-specific constructs. */
5662 /* Parse an objc-class-definition.
5664 objc-class-definition:
5665 @interface identifier objc-superclass[opt] objc-protocol-refs[opt]
5666 objc-class-instance-variables[opt] objc-methodprotolist @end
5667 @implementation identifier objc-superclass[opt]
5668 objc-class-instance-variables[opt]
5669 @interface identifier ( identifier ) objc-protocol-refs[opt]
5670 objc-methodprotolist @end
5671 @implementation identifier ( identifier )
5676 "@interface identifier (" must start "@interface identifier (
5677 identifier ) ...": objc-methodprotolist in the first production may
5678 not start with a parenthesized identifier as a declarator of a data
5679 definition with no declaration specifiers if the objc-superclass,
5680 objc-protocol-refs and objc-class-instance-variables are omitted. */
5683 c_parser_objc_class_definition (c_parser *parser)
5688 if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE))
5690 else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION))
5694 c_parser_consume_token (parser);
5695 if (c_parser_next_token_is_not (parser, CPP_NAME))
5697 c_parser_error (parser, "expected identifier");
5700 id1 = c_parser_peek_token (parser)->value;
5701 c_parser_consume_token (parser);
5702 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
5705 tree proto = NULL_TREE;
5706 c_parser_consume_token (parser);
5707 if (c_parser_next_token_is_not (parser, CPP_NAME))
5709 c_parser_error (parser, "expected identifier");
5710 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
5713 id2 = c_parser_peek_token (parser)->value;
5714 c_parser_consume_token (parser);
5715 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
5718 objc_start_category_implementation (id1, id2);
5721 if (c_parser_next_token_is (parser, CPP_LESS))
5722 proto = c_parser_objc_protocol_refs (parser);
5723 objc_start_category_interface (id1, id2, proto);
5724 c_parser_objc_methodprotolist (parser);
5725 c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>");
5726 objc_finish_interface ();
5729 if (c_parser_next_token_is (parser, CPP_COLON))
5731 c_parser_consume_token (parser);
5732 if (c_parser_next_token_is_not (parser, CPP_NAME))
5734 c_parser_error (parser, "expected identifier");
5737 superclass = c_parser_peek_token (parser)->value;
5738 c_parser_consume_token (parser);
5741 superclass = NULL_TREE;
5744 tree proto = NULL_TREE;
5745 if (c_parser_next_token_is (parser, CPP_LESS))
5746 proto = c_parser_objc_protocol_refs (parser);
5747 objc_start_class_interface (id1, superclass, proto);
5750 objc_start_class_implementation (id1, superclass);
5751 if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
5752 c_parser_objc_class_instance_variables (parser);
5755 objc_continue_interface ();
5756 c_parser_objc_methodprotolist (parser);
5757 c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>");
5758 objc_finish_interface ();
5762 objc_continue_implementation ();
5767 /* Parse objc-class-instance-variables.
5769 objc-class-instance-variables:
5770 { objc-instance-variable-decl-list[opt] }
5772 objc-instance-variable-decl-list:
5773 objc-visibility-spec
5774 objc-instance-variable-decl ;
5776 objc-instance-variable-decl-list objc-visibility-spec
5777 objc-instance-variable-decl-list objc-instance-variable-decl ;
5778 objc-instance-variable-decl-list ;
5780 objc-visibility-spec:
5785 objc-instance-variable-decl:
5790 c_parser_objc_class_instance_variables (c_parser *parser)
5792 gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE));
5793 c_parser_consume_token (parser);
5794 while (c_parser_next_token_is_not (parser, CPP_EOF))
5797 /* Parse any stray semicolon. */
5798 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
5801 pedwarn ("extra semicolon in struct or union specified");
5802 c_parser_consume_token (parser);
5805 /* Stop if at the end of the instance variables. */
5806 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
5808 c_parser_consume_token (parser);
5811 /* Parse any objc-visibility-spec. */
5812 if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE))
5814 c_parser_consume_token (parser);
5815 objc_set_visibility (2);
5818 else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED))
5820 c_parser_consume_token (parser);
5821 objc_set_visibility (0);
5824 else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC))
5826 c_parser_consume_token (parser);
5827 objc_set_visibility (1);
5830 else if (c_parser_next_token_is (parser, CPP_PRAGMA))
5832 c_parser_pragma (parser, pragma_external);
5836 /* Parse some comma-separated declarations. */
5837 decls = c_parser_struct_declaration (parser);
5839 /* Comma-separated instance variables are chained together in
5840 reverse order; add them one by one. */
5841 tree ivar = nreverse (decls);
5842 for (; ivar; ivar = TREE_CHAIN (ivar))
5843 objc_add_instance_variable (copy_node (ivar));
5845 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
5849 /* Parse an objc-class-declaration.
5851 objc-class-declaration:
5852 @class identifier-list ;
5856 c_parser_objc_class_declaration (c_parser *parser)
5858 tree list = NULL_TREE;
5859 gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS));
5860 c_parser_consume_token (parser);
5861 /* Any identifiers, including those declared as type names, are OK
5866 if (c_parser_next_token_is_not (parser, CPP_NAME))
5868 c_parser_error (parser, "expected identifier");
5871 id = c_parser_peek_token (parser)->value;
5872 list = chainon (list, build_tree_list (NULL_TREE, id));
5873 c_parser_consume_token (parser);
5874 if (c_parser_next_token_is (parser, CPP_COMMA))
5875 c_parser_consume_token (parser);
5879 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
5880 objc_declare_class (list);
5883 /* Parse an objc-alias-declaration.
5885 objc-alias-declaration:
5886 @compatibility_alias identifier identifier ;
5890 c_parser_objc_alias_declaration (c_parser *parser)
5893 gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS));
5894 c_parser_consume_token (parser);
5895 if (c_parser_next_token_is_not (parser, CPP_NAME))
5897 c_parser_error (parser, "expected identifier");
5898 c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
5901 id1 = c_parser_peek_token (parser)->value;
5902 c_parser_consume_token (parser);
5903 if (c_parser_next_token_is_not (parser, CPP_NAME))
5905 c_parser_error (parser, "expected identifier");
5906 c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
5909 id2 = c_parser_peek_token (parser)->value;
5910 c_parser_consume_token (parser);
5911 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
5912 objc_declare_alias (id1, id2);
5915 /* Parse an objc-protocol-definition.
5917 objc-protocol-definition:
5918 @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end
5919 @protocol identifier-list ;
5921 "@protocol identifier ;" should be resolved as "@protocol
5922 identifier-list ;": objc-methodprotolist may not start with a
5923 semicolon in the first alternative if objc-protocol-refs are
5927 c_parser_objc_protocol_definition (c_parser *parser)
5929 gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL));
5930 c_parser_consume_token (parser);
5931 if (c_parser_next_token_is_not (parser, CPP_NAME))
5933 c_parser_error (parser, "expected identifier");
5936 if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA
5937 || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON)
5939 tree list = NULL_TREE;
5940 /* Any identifiers, including those declared as type names, are
5945 if (c_parser_next_token_is_not (parser, CPP_NAME))
5947 c_parser_error (parser, "expected identifier");
5950 id = c_parser_peek_token (parser)->value;
5951 list = chainon (list, build_tree_list (NULL_TREE, id));
5952 c_parser_consume_token (parser);
5953 if (c_parser_next_token_is (parser, CPP_COMMA))
5954 c_parser_consume_token (parser);
5958 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
5959 objc_declare_protocols (list);
5963 tree id = c_parser_peek_token (parser)->value;
5964 tree proto = NULL_TREE;
5965 c_parser_consume_token (parser);
5966 if (c_parser_next_token_is (parser, CPP_LESS))
5967 proto = c_parser_objc_protocol_refs (parser);
5968 objc_pq_context = 1;
5969 objc_start_protocol (id, proto);
5970 c_parser_objc_methodprotolist (parser);
5971 c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>");
5972 objc_pq_context = 0;
5973 objc_finish_interface ();
5977 /* Parse an objc-method-type.
5984 static enum tree_code
5985 c_parser_objc_method_type (c_parser *parser)
5987 switch (c_parser_peek_token (parser)->type)
5990 c_parser_consume_token (parser);
5993 c_parser_consume_token (parser);
6000 /* Parse an objc-method-definition.
6002 objc-method-definition:
6003 objc-method-type objc-method-decl ;[opt] compound-statement
6007 c_parser_objc_method_definition (c_parser *parser)
6009 enum tree_code type = c_parser_objc_method_type (parser);
6011 objc_set_method_type (type);
6012 objc_pq_context = 1;
6013 decl = c_parser_objc_method_decl (parser);
6014 if (c_parser_next_token_is (parser, CPP_SEMICOLON))
6016 c_parser_consume_token (parser);
6018 pedwarn ("extra semicolon in method definition specified");
6020 if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE))
6022 c_parser_error (parser, "expected %<{%>");
6025 objc_pq_context = 0;
6026 objc_start_method_definition (decl);
6027 add_stmt (c_parser_compound_statement (parser));
6028 objc_finish_method_definition (current_function_decl);
6031 /* Parse an objc-methodprotolist.
6033 objc-methodprotolist:
6035 objc-methodprotolist objc-methodproto
6036 objc-methodprotolist declaration
6037 objc-methodprotolist ;
6039 The declaration is a data definition, which may be missing
6040 declaration specifiers under the same rules and diagnostics as
6041 other data definitions outside functions, and the stray semicolon
6042 is diagnosed the same way as a stray semicolon outside a
6046 c_parser_objc_methodprotolist (c_parser *parser)
6050 /* The list is terminated by @end. */
6051 switch (c_parser_peek_token (parser)->type)
6055 pedwarn ("ISO C does not allow extra %<;%> outside of a function");
6056 c_parser_consume_token (parser);
6060 c_parser_objc_methodproto (parser);
6063 c_parser_pragma (parser, pragma_external);
6068 if (c_parser_next_token_is_keyword (parser, RID_AT_END))
6070 c_parser_declaration_or_fndef (parser, false, true, false, true);
6076 /* Parse an objc-methodproto.
6079 objc-method-type objc-method-decl ;
6083 c_parser_objc_methodproto (c_parser *parser)
6085 enum tree_code type = c_parser_objc_method_type (parser);
6087 objc_set_method_type (type);
6088 /* Remember protocol qualifiers in prototypes. */
6089 objc_pq_context = 1;
6090 decl = c_parser_objc_method_decl (parser);
6091 /* Forget protocol qualifiers here. */
6092 objc_pq_context = 0;
6093 objc_add_method_declaration (decl);
6094 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
6097 /* Parse an objc-method-decl.
6100 ( objc-type-name ) objc-selector
6102 ( objc-type-name ) objc-keyword-selector objc-optparmlist
6103 objc-keyword-selector objc-optparmlist
6105 objc-keyword-selector:
6107 objc-keyword-selector objc-keyword-decl
6110 objc-selector : ( objc-type-name ) identifier
6111 objc-selector : identifier
6112 : ( objc-type-name ) identifier
6116 objc-optparms objc-optellipsis
6120 objc-opt-parms , parameter-declaration
6128 c_parser_objc_method_decl (c_parser *parser)
6130 tree type = NULL_TREE;
6132 tree parms = NULL_TREE;
6133 bool ellipsis = false;
6135 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
6137 c_parser_consume_token (parser);
6138 type = c_parser_objc_type_name (parser);
6139 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6141 sel = c_parser_objc_selector (parser);
6142 /* If there is no selector, or a colon follows, we have an
6143 objc-keyword-selector. If there is a selector, and a colon does
6144 not follow, that selector ends the objc-method-decl. */
6145 if (!sel || c_parser_next_token_is (parser, CPP_COLON))
6148 tree list = NULL_TREE;
6151 tree atype = NULL_TREE, id, keyworddecl;
6152 if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
6154 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
6156 c_parser_consume_token (parser);
6157 atype = c_parser_objc_type_name (parser);
6158 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
6161 if (c_parser_next_token_is_not (parser, CPP_NAME))
6163 c_parser_error (parser, "expected identifier");
6164 return error_mark_node;
6166 id = c_parser_peek_token (parser)->value;
6167 c_parser_consume_token (parser);
6168 keyworddecl = objc_build_keyword_decl (tsel, atype, id);
6169 list = chainon (list, keyworddecl);
6170 tsel = c_parser_objc_selector (parser);
6171 if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON))
6174 /* Parse the optional parameter list. Optional Objective-C
6175 method parameters follow the C syntax, and may include '...'
6176 to denote a variable number of arguments. */
6177 parms = make_node (TREE_LIST);
6178 while (c_parser_next_token_is (parser, CPP_COMMA))
6180 struct c_parm *parm;
6181 c_parser_consume_token (parser);
6182 if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
6185 c_parser_consume_token (parser);
6188 parm = c_parser_parameter_declaration (parser, NULL_TREE);
6191 parms = chainon (parms,
6192 build_tree_list (NULL_TREE, grokparm (parm)));
6196 return objc_build_method_signature (type, sel, parms, ellipsis);
6199 /* Parse an objc-type-name.
6202 objc-type-qualifiers[opt] type-name
6203 objc-type-qualifiers[opt]
6205 objc-type-qualifiers:
6207 objc-type-qualifiers objc-type-qualifier
6209 objc-type-qualifier: one of
6210 in out inout bycopy byref oneway
6214 c_parser_objc_type_name (c_parser *parser)
6216 tree quals = NULL_TREE;
6217 struct c_type_name *typename = NULL;
6218 tree type = NULL_TREE;
6221 c_token *token = c_parser_peek_token (parser);
6222 if (token->type == CPP_KEYWORD
6223 && (token->keyword == RID_IN
6224 || token->keyword == RID_OUT
6225 || token->keyword == RID_INOUT
6226 || token->keyword == RID_BYCOPY
6227 || token->keyword == RID_BYREF
6228 || token->keyword == RID_ONEWAY))
6230 quals = chainon (quals, build_tree_list (NULL_TREE, token->value));
6231 c_parser_consume_token (parser);
6236 if (c_parser_next_token_starts_typename (parser))
6237 typename = c_parser_type_name (parser);
6239 type = groktypename (typename);
6240 return build_tree_list (quals, type);
6243 /* Parse objc-protocol-refs.
6250 c_parser_objc_protocol_refs (c_parser *parser)
6252 tree list = NULL_TREE;
6253 gcc_assert (c_parser_next_token_is (parser, CPP_LESS));
6254 c_parser_consume_token (parser);
6255 /* Any identifiers, including those declared as type names, are OK
6260 if (c_parser_next_token_is_not (parser, CPP_NAME))
6262 c_parser_error (parser, "expected identifier");
6265 id = c_parser_peek_token (parser)->value;
6266 list = chainon (list, build_tree_list (NULL_TREE, id));
6267 c_parser_consume_token (parser);
6268 if (c_parser_next_token_is (parser, CPP_COMMA))
6269 c_parser_consume_token (parser);
6273 c_parser_require (parser, CPP_GREATER, "expected %<>%>");
6277 /* Parse an objc-try-catch-statement.
6279 objc-try-catch-statement:
6280 @try compound-statement objc-catch-list[opt]
6281 @try compound-statement objc-catch-list[opt] @finally compound-statement
6284 @catch ( parameter-declaration ) compound-statement
6285 objc-catch-list @catch ( parameter-declaration ) compound-statement
6289 c_parser_objc_try_catch_statement (c_parser *parser)
6293 gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY));
6294 c_parser_consume_token (parser);
6295 loc = c_parser_peek_token (parser)->location;
6296 stmt = c_parser_compound_statement (parser);
6297 objc_begin_try_stmt (loc, stmt);
6298 while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH))
6300 struct c_parm *parm;
6301 c_parser_consume_token (parser);
6302 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
6304 parm = c_parser_parameter_declaration (parser, NULL_TREE);
6307 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
6310 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6311 objc_begin_catch_clause (grokparm (parm));
6312 if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
6313 c_parser_compound_statement_nostart (parser);
6314 objc_finish_catch_clause ();
6316 if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY))
6320 c_parser_consume_token (parser);
6321 finloc = c_parser_peek_token (parser)->location;
6322 finstmt = c_parser_compound_statement (parser);
6323 objc_build_finally_clause (finloc, finstmt);
6325 objc_finish_try_stmt ();
6328 /* Parse an objc-synchronized-statement.
6330 objc-synchronized-statement:
6331 @synchronized ( expression ) compound-statement
6335 c_parser_objc_synchronized_statement (c_parser *parser)
6339 gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED));
6340 c_parser_consume_token (parser);
6341 loc = c_parser_peek_token (parser)->location;
6342 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
6344 expr = c_parser_expression (parser).value;
6345 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6348 expr = error_mark_node;
6349 stmt = c_parser_compound_statement (parser);
6350 objc_build_synchronized (loc, expr, stmt);
6353 /* Parse an objc-selector; return NULL_TREE without an error if the
6354 next token is not an objc-selector.
6359 enum struct union if else while do for switch case default
6360 break continue return goto asm sizeof typeof __alignof
6361 unsigned long const short volatile signed restrict _Complex
6362 in out inout bycopy byref oneway int char float double void _Bool
6364 ??? Why this selection of keywords but not, for example, storage
6365 class specifiers? */
6368 c_parser_objc_selector (c_parser *parser)
6370 c_token *token = c_parser_peek_token (parser);
6371 tree value = token->value;
6372 if (token->type == CPP_NAME)
6374 c_parser_consume_token (parser);
6377 if (token->type != CPP_KEYWORD)
6379 switch (token->keyword)
6420 c_parser_consume_token (parser);
6427 /* Parse an objc-selector-arg.
6431 objc-keywordname-list
6433 objc-keywordname-list:
6435 objc-keywordname-list objc-keywordname
6443 c_parser_objc_selector_arg (c_parser *parser)
6445 tree sel = c_parser_objc_selector (parser);
6446 tree list = NULL_TREE;
6447 if (sel && c_parser_next_token_is_not (parser, CPP_COLON))
6451 if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
6453 list = chainon (list, build_tree_list (sel, NULL_TREE));
6454 sel = c_parser_objc_selector (parser);
6455 if (!sel && c_parser_next_token_is_not (parser, CPP_COLON))
6461 /* Parse an objc-receiver.
6470 c_parser_objc_receiver (c_parser *parser)
6472 if (c_parser_peek_token (parser)->type == CPP_NAME
6473 && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME
6474 || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME))
6476 tree id = c_parser_peek_token (parser)->value;
6477 c_parser_consume_token (parser);
6478 return objc_get_class_reference (id);
6480 return c_parser_expression (parser).value;
6483 /* Parse objc-message-args.
6487 objc-keywordarg-list
6489 objc-keywordarg-list:
6491 objc-keywordarg-list objc-keywordarg
6494 objc-selector : objc-keywordexpr
6499 c_parser_objc_message_args (c_parser *parser)
6501 tree sel = c_parser_objc_selector (parser);
6502 tree list = NULL_TREE;
6503 if (sel && c_parser_next_token_is_not (parser, CPP_COLON))
6508 if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
6510 keywordexpr = c_parser_objc_keywordexpr (parser);
6511 list = chainon (list, build_tree_list (sel, keywordexpr));
6512 sel = c_parser_objc_selector (parser);
6513 if (!sel && c_parser_next_token_is_not (parser, CPP_COLON))
6519 /* Parse an objc-keywordexpr.
6526 c_parser_objc_keywordexpr (c_parser *parser)
6528 tree list = c_parser_expr_list (parser, true);
6529 if (TREE_CHAIN (list) == NULL_TREE)
6531 /* Just return the expression, remove a level of
6533 return TREE_VALUE (list);
6537 /* We have a comma expression, we will collapse later. */
6543 /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore
6544 should be considered, statements. ALLOW_STMT is true if we're within
6545 the context of a function and such pragmas are to be allowed. Returns
6546 true if we actually parsed such a pragma. */
6549 c_parser_pragma (c_parser *parser, enum pragma_context context)
6553 id = c_parser_peek_token (parser)->pragma_kind;
6554 gcc_assert (id != PRAGMA_NONE);
6558 case PRAGMA_OMP_BARRIER:
6559 if (context != pragma_compound)
6561 if (context == pragma_stmt)
6562 c_parser_error (parser, "%<#pragma omp barrier%> may only be "
6563 "used in compound statements");
6566 c_parser_omp_barrier (parser);
6569 case PRAGMA_OMP_FLUSH:
6570 if (context != pragma_compound)
6572 if (context == pragma_stmt)
6573 c_parser_error (parser, "%<#pragma omp flush%> may only be "
6574 "used in compound statements");
6577 c_parser_omp_flush (parser);
6580 case PRAGMA_OMP_THREADPRIVATE:
6581 c_parser_omp_threadprivate (parser);
6584 case PRAGMA_OMP_SECTION:
6585 error ("%<#pragma omp section%> may only be used in "
6586 "%<#pragma omp sections%> construct");
6587 c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL);
6590 case PRAGMA_GCC_PCH_PREPROCESS:
6591 c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first");
6592 c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL);
6596 if (id < PRAGMA_FIRST_EXTERNAL)
6598 if (context == pragma_external)
6601 c_parser_error (parser, "expected declaration specifiers");
6602 c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL);
6605 c_parser_omp_construct (parser);
6611 c_parser_consume_pragma (parser);
6612 c_invoke_pragma_handler (id);
6614 /* Skip to EOL, but suppress any error message. Those will have been
6615 generated by the handler routine through calling error, as opposed
6616 to calling c_parser_error. */
6617 parser->error = true;
6618 c_parser_skip_to_pragma_eol (parser);
6623 /* The interface the pragma parsers have to the lexer. */
6626 pragma_lex (tree *value)
6628 c_token *tok = c_parser_peek_token (the_parser);
6629 enum cpp_ttype ret = tok->type;
6631 *value = tok->value;
6632 if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF)
6636 if (ret == CPP_KEYWORD)
6638 c_parser_consume_token (the_parser);
6645 c_parser_pragma_pch_preprocess (c_parser *parser)
6649 c_parser_consume_pragma (parser);
6650 if (c_parser_next_token_is (parser, CPP_STRING))
6652 name = c_parser_peek_token (parser)->value;
6653 c_parser_consume_token (parser);
6656 c_parser_error (parser, "expected string literal");
6657 c_parser_skip_to_pragma_eol (parser);
6660 c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name));
6663 /* OpenMP 2.5 parsing routines. */
6665 /* Returns name of the next clause.
6666 If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and
6667 the token is not consumed. Otherwise appropriate pragma_omp_clause is
6668 returned and the token is consumed. */
6670 static pragma_omp_clause
6671 c_parser_omp_clause_name (c_parser *parser)
6673 pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE;
6675 if (c_parser_next_token_is_keyword (parser, RID_IF))
6676 result = PRAGMA_OMP_CLAUSE_IF;
6677 else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT))
6678 result = PRAGMA_OMP_CLAUSE_DEFAULT;
6679 else if (c_parser_next_token_is (parser, CPP_NAME))
6681 const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
6686 if (!strcmp ("copyin", p))
6687 result = PRAGMA_OMP_CLAUSE_COPYIN;
6688 else if (!strcmp ("copyprivate", p))
6689 result = PRAGMA_OMP_CLAUSE_COPYPRIVATE;
6692 if (!strcmp ("firstprivate", p))
6693 result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE;
6696 if (!strcmp ("lastprivate", p))
6697 result = PRAGMA_OMP_CLAUSE_LASTPRIVATE;
6700 if (!strcmp ("nowait", p))
6701 result = PRAGMA_OMP_CLAUSE_NOWAIT;
6702 else if (!strcmp ("num_threads", p))
6703 result = PRAGMA_OMP_CLAUSE_NUM_THREADS;
6706 if (!strcmp ("ordered", p))
6707 result = PRAGMA_OMP_CLAUSE_ORDERED;
6710 if (!strcmp ("private", p))
6711 result = PRAGMA_OMP_CLAUSE_PRIVATE;
6714 if (!strcmp ("reduction", p))
6715 result = PRAGMA_OMP_CLAUSE_REDUCTION;
6718 if (!strcmp ("schedule", p))
6719 result = PRAGMA_OMP_CLAUSE_SCHEDULE;
6720 else if (!strcmp ("shared", p))
6721 result = PRAGMA_OMP_CLAUSE_SHARED;
6726 if (result != PRAGMA_OMP_CLAUSE_NONE)
6727 c_parser_consume_token (parser);
6732 /* Validate that a clause of the given type does not already exist. */
6735 check_no_duplicate_clause (tree clauses, enum tree_code code, const char *name)
6739 for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c))
6740 if (OMP_CLAUSE_CODE (c) == code)
6742 error ("too many %qs clauses", name);
6750 variable-list , identifier
6752 If KIND is nonzero, create the appropriate node and install the decl
6753 in OMP_CLAUSE_DECL and add the node to the head of the list.
6755 If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE;
6756 return the list created. */
6759 c_parser_omp_variable_list (c_parser *parser, enum omp_clause_code kind,
6762 if (c_parser_next_token_is_not (parser, CPP_NAME)
6763 || c_parser_peek_token (parser)->id_kind != C_ID_ID)
6764 c_parser_error (parser, "expected identifier");
6766 while (c_parser_next_token_is (parser, CPP_NAME)
6767 && c_parser_peek_token (parser)->id_kind == C_ID_ID)
6769 tree t = lookup_name (c_parser_peek_token (parser)->value);
6772 undeclared_variable (c_parser_peek_token (parser)->value,
6773 c_parser_peek_token (parser)->location);
6774 else if (t == error_mark_node)
6778 tree u = build_omp_clause (kind);
6779 OMP_CLAUSE_DECL (u) = t;
6780 OMP_CLAUSE_CHAIN (u) = list;
6784 list = tree_cons (t, NULL_TREE, list);
6786 c_parser_consume_token (parser);
6788 if (c_parser_next_token_is_not (parser, CPP_COMMA))
6791 c_parser_consume_token (parser);
6797 /* Similarly, but expect leading and trailing parenthesis. This is a very
6798 common case for omp clauses. */
6801 c_parser_omp_var_list_parens (c_parser *parser, enum tree_code kind, tree list)
6803 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
6805 list = c_parser_omp_variable_list (parser, kind, list);
6806 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6812 copyin ( variable-list ) */
6815 c_parser_omp_clause_copyin (c_parser *parser, tree list)
6817 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list);
6821 copyprivate ( variable-list ) */
6824 c_parser_omp_clause_copyprivate (c_parser *parser, tree list)
6826 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list);
6830 default ( shared | none ) */
6833 c_parser_omp_clause_default (c_parser *parser, tree list)
6835 enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED;
6838 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
6840 if (c_parser_next_token_is (parser, CPP_NAME))
6842 const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
6847 if (strcmp ("none", p) != 0)
6849 kind = OMP_CLAUSE_DEFAULT_NONE;
6853 if (strcmp ("shared", p) != 0)
6855 kind = OMP_CLAUSE_DEFAULT_SHARED;
6862 c_parser_consume_token (parser);
6867 c_parser_error (parser, "expected %<none%> or %<shared%>");
6869 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6871 if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED)
6874 check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default");
6875 c = build_omp_clause (OMP_CLAUSE_DEFAULT);
6876 OMP_CLAUSE_CHAIN (c) = list;
6877 OMP_CLAUSE_DEFAULT_KIND (c) = kind;
6883 firstprivate ( variable-list ) */
6886 c_parser_omp_clause_firstprivate (c_parser *parser, tree list)
6888 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list);
6892 if ( expression ) */
6895 c_parser_omp_clause_if (c_parser *parser, tree list)
6897 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
6899 tree t = c_parser_paren_condition (parser);
6902 check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if");
6904 c = build_omp_clause (OMP_CLAUSE_IF);
6905 OMP_CLAUSE_IF_EXPR (c) = t;
6906 OMP_CLAUSE_CHAIN (c) = list;
6910 c_parser_error (parser, "expected %<(%>");
6916 lastprivate ( variable-list ) */
6919 c_parser_omp_clause_lastprivate (c_parser *parser, tree list)
6921 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list);
6928 c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list)
6932 check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait");
6934 c = build_omp_clause (OMP_CLAUSE_NOWAIT);
6935 OMP_CLAUSE_CHAIN (c) = list;
6940 num_threads ( expression ) */
6943 c_parser_omp_clause_num_threads (c_parser *parser, tree list)
6945 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
6947 tree c, t = c_parser_expression (parser).value;
6949 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
6951 if (!INTEGRAL_TYPE_P (TREE_TYPE (t)))
6953 c_parser_error (parser, "expected integer expression");
6957 /* Attempt to statically determine when the number isn't positive. */
6958 c = fold_build2 (LE_EXPR, boolean_type_node, t,
6959 build_int_cst (TREE_TYPE (t), 0));
6960 if (c == boolean_true_node)
6962 warning (0, "%<num_threads%> value must be positive");
6963 t = integer_one_node;
6966 check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads");
6968 c = build_omp_clause (OMP_CLAUSE_NUM_THREADS);
6969 OMP_CLAUSE_NUM_THREADS_EXPR (c) = t;
6970 OMP_CLAUSE_CHAIN (c) = list;
6981 c_parser_omp_clause_ordered (c_parser *parser ATTRIBUTE_UNUSED, tree list)
6985 check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered");
6987 c = build_omp_clause (OMP_CLAUSE_ORDERED);
6988 OMP_CLAUSE_CHAIN (c) = list;
6993 private ( variable-list ) */
6996 c_parser_omp_clause_private (c_parser *parser, tree list)
6998 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list);
7002 reduction ( reduction-operator : variable-list )
7005 One of: + * - & ^ | && || */
7008 c_parser_omp_clause_reduction (c_parser *parser, tree list)
7010 if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
7012 enum tree_code code;
7014 switch (c_parser_peek_token (parser)->type)
7026 code = BIT_AND_EXPR;
7029 code = BIT_XOR_EXPR;
7032 code = BIT_IOR_EXPR;
7035 code = TRUTH_ANDIF_EXPR;
7038 code = TRUTH_ORIF_EXPR;
7041 c_parser_error (parser,
7042 "expected %<+%>, %<*%>, %<-%>, %<&%>, "
7043 "%<^%>, %<|%>, %<&&%>, or %<||%>");
7044 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0);
7047 c_parser_consume_token (parser);
7048 if (c_parser_require (parser, CPP_COLON, "expected %<:%>"))
7052 nl = c_parser_omp_variable_list (parser, OMP_CLAUSE_REDUCTION, list);
7053 for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
7054 OMP_CLAUSE_REDUCTION_CODE (c) = code;
7058 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
7064 schedule ( schedule-kind )
7065 schedule ( schedule-kind , expression )
7068 static | dynamic | guided | runtime
7072 c_parser_omp_clause_schedule (c_parser *parser, tree list)
7076 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
7079 c = build_omp_clause (OMP_CLAUSE_SCHEDULE);
7081 if (c_parser_next_token_is (parser, CPP_NAME))
7083 tree kind = c_parser_peek_token (parser)->value;
7084 const char *p = IDENTIFIER_POINTER (kind);
7089 if (strcmp ("dynamic", p) != 0)
7091 OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC;
7095 if (strcmp ("guided", p) != 0)
7097 OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED;
7101 if (strcmp ("runtime", p) != 0)
7103 OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME;
7110 else if (c_parser_next_token_is_keyword (parser, RID_STATIC))
7111 OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC;
7115 c_parser_consume_token (parser);
7116 if (c_parser_next_token_is (parser, CPP_COMMA))
7118 c_parser_consume_token (parser);
7120 t = c_parser_expr_no_commas (parser, NULL).value;
7122 if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME)
7123 error ("schedule %<runtime%> does not take "
7124 "a %<chunk_size%> parameter");
7125 else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE)
7126 OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t;
7128 c_parser_error (parser, "expected integer expression");
7130 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
7133 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
7134 "expected %<,%> or %<)%>");
7136 check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule");
7137 OMP_CLAUSE_CHAIN (c) = list;
7141 c_parser_error (parser, "invalid schedule kind");
7142 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0);
7147 shared ( variable-list ) */
7150 c_parser_omp_clause_shared (c_parser *parser, tree list)
7152 return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list);
7155 /* Parse all OpenMP clauses. The set clauses allowed by the directive
7156 is a bitmask in MASK. Return the list of clauses found; the result
7157 of clause default goes in *pdefault. */
7160 c_parser_omp_all_clauses (c_parser *parser, unsigned int mask,
7163 tree clauses = NULL;
7165 while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL))
7167 const pragma_omp_clause c_kind = c_parser_omp_clause_name (parser);
7169 tree prev = clauses;
7173 case PRAGMA_OMP_CLAUSE_COPYIN:
7174 clauses = c_parser_omp_clause_copyin (parser, clauses);
7177 case PRAGMA_OMP_CLAUSE_COPYPRIVATE:
7178 clauses = c_parser_omp_clause_copyprivate (parser, clauses);
7179 c_name = "copyprivate";
7181 case PRAGMA_OMP_CLAUSE_DEFAULT:
7182 clauses = c_parser_omp_clause_default (parser, clauses);
7185 case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE:
7186 clauses = c_parser_omp_clause_firstprivate (parser, clauses);
7187 c_name = "firstprivate";
7189 case PRAGMA_OMP_CLAUSE_IF:
7190 clauses = c_parser_omp_clause_if (parser, clauses);
7193 case PRAGMA_OMP_CLAUSE_LASTPRIVATE:
7194 clauses = c_parser_omp_clause_lastprivate (parser, clauses);
7195 c_name = "lastprivate";
7197 case PRAGMA_OMP_CLAUSE_NOWAIT:
7198 clauses = c_parser_omp_clause_nowait (parser, clauses);
7201 case PRAGMA_OMP_CLAUSE_NUM_THREADS:
7202 clauses = c_parser_omp_clause_num_threads (parser, clauses);
7203 c_name = "num_threads";
7205 case PRAGMA_OMP_CLAUSE_ORDERED:
7206 clauses = c_parser_omp_clause_ordered (parser, clauses);
7209 case PRAGMA_OMP_CLAUSE_PRIVATE:
7210 clauses = c_parser_omp_clause_private (parser, clauses);
7213 case PRAGMA_OMP_CLAUSE_REDUCTION:
7214 clauses = c_parser_omp_clause_reduction (parser, clauses);
7215 c_name = "reduction";
7217 case PRAGMA_OMP_CLAUSE_SCHEDULE:
7218 clauses = c_parser_omp_clause_schedule (parser, clauses);
7219 c_name = "schedule";
7221 case PRAGMA_OMP_CLAUSE_SHARED:
7222 clauses = c_parser_omp_clause_shared (parser, clauses);
7226 c_parser_error (parser, "expected %<#pragma omp%> clause");
7230 if (((mask >> c_kind) & 1) == 0 && !parser->error)
7232 /* Remove the invalid clause(s) from the list to avoid
7233 confusing the rest of the compiler. */
7235 error ("%qs is not valid for %qs", c_name, where);
7240 c_parser_skip_to_pragma_eol (parser);
7242 return c_finish_omp_clauses (clauses);
7249 In practice, we're also interested in adding the statement to an
7250 outer node. So it is convenient if we work around the fact that
7251 c_parser_statement calls add_stmt. */
7254 c_parser_omp_structured_block (c_parser *parser)
7256 tree stmt = push_stmt_list ();
7257 c_parser_statement (parser);
7258 return pop_stmt_list (stmt);
7262 # pragma omp atomic new-line
7266 x binop= expr | x++ | ++x | x-- | --x
7268 +, *, -, /, &, ^, |, <<, >>
7270 where x is an lvalue expression with scalar type. */
7273 c_parser_omp_atomic (c_parser *parser)
7277 enum tree_code code;
7279 c_parser_skip_to_pragma_eol (parser);
7281 lhs = c_parser_unary_expression (parser).value;
7282 switch (TREE_CODE (lhs))
7286 c_parser_skip_to_end_of_block_or_statement (parser);
7289 case PREINCREMENT_EXPR:
7290 case POSTINCREMENT_EXPR:
7291 lhs = TREE_OPERAND (lhs, 0);
7293 rhs = integer_one_node;
7296 case PREDECREMENT_EXPR:
7297 case POSTDECREMENT_EXPR:
7298 lhs = TREE_OPERAND (lhs, 0);
7300 rhs = integer_one_node;
7304 switch (c_parser_peek_token (parser)->type)
7310 code = TRUNC_DIV_EXPR;
7325 code = BIT_AND_EXPR;
7328 code = BIT_IOR_EXPR;
7331 code = BIT_XOR_EXPR;
7334 c_parser_error (parser,
7335 "invalid operator for %<#pragma omp atomic%>");
7339 c_parser_consume_token (parser);
7340 rhs = c_parser_expression (parser).value;
7343 stmt = c_finish_omp_atomic (code, lhs, rhs);
7344 if (stmt != error_mark_node)
7346 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
7351 # pragma omp barrier new-line
7355 c_parser_omp_barrier (c_parser *parser)
7357 c_parser_consume_pragma (parser);
7358 c_parser_skip_to_pragma_eol (parser);
7360 c_finish_omp_barrier ();
7364 # pragma omp critical [(name)] new-line
7369 c_parser_omp_critical (c_parser *parser)
7371 tree stmt, name = NULL;
7373 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
7375 c_parser_consume_token (parser);
7376 if (c_parser_next_token_is (parser, CPP_NAME))
7378 name = c_parser_peek_token (parser)->value;
7379 c_parser_consume_token (parser);
7380 c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>");
7383 c_parser_error (parser, "expected identifier");
7385 else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL))
7386 c_parser_error (parser, "expected %<(%> or end of line");
7387 c_parser_skip_to_pragma_eol (parser);
7389 stmt = c_parser_omp_structured_block (parser);
7390 return c_finish_omp_critical (stmt, name);
7394 # pragma omp flush flush-vars[opt] new-line
7397 ( variable-list ) */
7400 c_parser_omp_flush (c_parser *parser)
7402 c_parser_consume_pragma (parser);
7403 if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
7404 c_parser_omp_var_list_parens (parser, 0, NULL);
7405 else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL))
7406 c_parser_error (parser, "expected %<(%> or end of line");
7407 c_parser_skip_to_pragma_eol (parser);
7409 c_finish_omp_flush ();
7412 /* Parse the restricted form of the for statment allowed by OpenMP.
7413 The real trick here is to determine the loop control variable early
7414 so that we can push a new decl if necessary to make it private. */
7417 c_parser_omp_for_loop (c_parser *parser)
7419 tree decl, cond, incr, save_break, save_cont, body, init;
7422 if (!c_parser_next_token_is_keyword (parser, RID_FOR))
7424 c_parser_error (parser, "for statement expected");
7427 loc = c_parser_peek_token (parser)->location;
7428 c_parser_consume_token (parser);
7430 if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
7433 /* Parse the initialization declaration or expression. */
7434 if (c_parser_next_token_starts_declspecs (parser))
7436 c_parser_declaration_or_fndef (parser, true, true, true, true);
7437 decl = check_for_loop_decls ();
7442 else if (c_parser_next_token_is (parser, CPP_NAME)
7443 && c_parser_peek_2nd_token (parser)->type == CPP_EQ)
7445 decl = c_parser_postfix_expression (parser).value;
7447 c_parser_require (parser, CPP_EQ, "expected %<=%>");
7449 init = c_parser_expr_no_commas (parser, NULL).value;
7450 init = build_modify_expr (decl, NOP_EXPR, init);
7451 init = c_process_expr_stmt (init);
7453 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
7458 /* Parse the loop condition. */
7460 if (c_parser_next_token_is_not (parser, CPP_SEMICOLON))
7462 cond = c_parser_expression_conv (parser).value;
7463 cond = c_objc_common_truthvalue_conversion (cond);
7465 SET_EXPR_LOCATION (cond, input_location);
7467 c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
7469 /* Parse the increment expression. */
7471 if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN))
7472 incr = c_process_expr_stmt (c_parser_expression (parser).value);
7473 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
7476 save_break = c_break_label;
7477 c_break_label = size_one_node;
7478 save_cont = c_cont_label;
7479 c_cont_label = NULL_TREE;
7480 body = push_stmt_list ();
7482 add_stmt (c_parser_c99_block_statement (parser));
7484 add_stmt (build1 (LABEL_EXPR, void_type_node, c_cont_label));
7486 body = pop_stmt_list (body);
7487 c_break_label = save_break;
7488 c_cont_label = save_cont;
7490 /* Only bother calling c_finish_omp_for if we havn't already generated
7491 an error from the initialization parsing. */
7492 if (decl != NULL && decl != error_mark_node && init != error_mark_node)
7493 return c_finish_omp_for (loc, decl, init, cond, incr, body, NULL);
7497 c_parser_error (parser, "expected iteration declaration or initialization");
7498 c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
7499 decl = init = cond = incr = NULL_TREE;
7504 #pragma omp for for-clause[optseq] new-line
7508 #define OMP_FOR_CLAUSE_MASK \
7509 ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
7510 | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
7511 | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \
7512 | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \
7513 | (1u << PRAGMA_OMP_CLAUSE_ORDERED) \
7514 | (1u << PRAGMA_OMP_CLAUSE_SCHEDULE) \
7515 | (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
7518 c_parser_omp_for (c_parser *parser)
7520 tree block, clauses, ret;
7522 clauses = c_parser_omp_all_clauses (parser, OMP_FOR_CLAUSE_MASK,
7525 block = c_begin_compound_stmt (true);
7526 ret = c_parser_omp_for_loop (parser);
7528 OMP_FOR_CLAUSES (ret) = clauses;
7529 block = c_end_compound_stmt (block, true);
7536 # pragma omp master new-line
7541 c_parser_omp_master (c_parser *parser)
7543 c_parser_skip_to_pragma_eol (parser);
7544 return c_finish_omp_master (c_parser_omp_structured_block (parser));
7548 # pragma omp ordered new-line
7553 c_parser_omp_ordered (c_parser *parser)
7555 c_parser_skip_to_pragma_eol (parser);
7556 return c_finish_omp_ordered (c_parser_omp_structured_block (parser));
7562 { section-sequence }
7565 section-directive[opt] structured-block
7566 section-sequence section-directive structured-block */
7569 c_parser_omp_sections_scope (c_parser *parser)
7572 bool error_suppress = false;
7575 if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
7577 /* Avoid skipping until the end of the block. */
7578 parser->error = false;
7582 stmt = push_stmt_list ();
7584 loc = c_parser_peek_token (parser)->location;
7585 if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION)
7587 substmt = push_stmt_list ();
7591 c_parser_statement (parser);
7593 if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION)
7595 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
7597 if (c_parser_next_token_is (parser, CPP_EOF))
7601 substmt = pop_stmt_list (substmt);
7602 substmt = build1 (OMP_SECTION, void_type_node, substmt);
7603 SET_EXPR_LOCATION (substmt, loc);
7609 if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
7611 if (c_parser_next_token_is (parser, CPP_EOF))
7614 loc = c_parser_peek_token (parser)->location;
7615 if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION)
7617 c_parser_consume_pragma (parser);
7618 c_parser_skip_to_pragma_eol (parser);
7619 error_suppress = false;
7621 else if (!error_suppress)
7623 error ("expected %<#pragma omp section%> or %<}%>");
7624 error_suppress = true;
7627 substmt = c_parser_omp_structured_block (parser);
7628 substmt = build1 (OMP_SECTION, void_type_node, substmt);
7629 SET_EXPR_LOCATION (substmt, loc);
7632 c_parser_skip_until_found (parser, CPP_CLOSE_BRACE,
7633 "expected %<#pragma omp section%> or %<}%>");
7635 substmt = pop_stmt_list (stmt);
7637 stmt = make_node (OMP_SECTIONS);
7638 TREE_TYPE (stmt) = void_type_node;
7639 OMP_SECTIONS_BODY (stmt) = substmt;
7641 return add_stmt (stmt);
7645 # pragma omp sections sections-clause[optseq] newline
7649 #define OMP_SECTIONS_CLAUSE_MASK \
7650 ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
7651 | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
7652 | (1u << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \
7653 | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \
7654 | (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
7657 c_parser_omp_sections (c_parser *parser)
7659 tree block, clauses, ret;
7661 clauses = c_parser_omp_all_clauses (parser, OMP_SECTIONS_CLAUSE_MASK,
7662 "#pragma omp sections");
7664 block = c_begin_compound_stmt (true);
7665 ret = c_parser_omp_sections_scope (parser);
7667 OMP_SECTIONS_CLAUSES (ret) = clauses;
7668 block = c_end_compound_stmt (block, true);
7675 # pragma parallel parallel-clause new-line
7676 # pragma parallel for parallel-for-clause new-line
7677 # pragma parallel sections parallel-sections-clause new-line
7680 #define OMP_PARALLEL_CLAUSE_MASK \
7681 ( (1u << PRAGMA_OMP_CLAUSE_IF) \
7682 | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
7683 | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
7684 | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \
7685 | (1u << PRAGMA_OMP_CLAUSE_SHARED) \
7686 | (1u << PRAGMA_OMP_CLAUSE_COPYIN) \
7687 | (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \
7688 | (1u << PRAGMA_OMP_CLAUSE_NUM_THREADS))
7691 c_parser_omp_parallel (c_parser *parser)
7693 enum pragma_kind p_kind = PRAGMA_OMP_PARALLEL;
7694 const char *p_name = "#pragma omp parallel";
7695 tree stmt, clauses, par_clause, ws_clause, block;
7696 unsigned int mask = OMP_PARALLEL_CLAUSE_MASK;
7698 if (c_parser_next_token_is_keyword (parser, RID_FOR))
7700 c_parser_consume_token (parser);
7701 p_kind = PRAGMA_OMP_PARALLEL_FOR;
7702 p_name = "#pragma omp parallel for";
7703 mask |= OMP_FOR_CLAUSE_MASK;
7704 mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT);
7706 else if (c_parser_next_token_is (parser, CPP_NAME))
7708 const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
7709 if (strcmp (p, "sections") == 0)
7711 c_parser_consume_token (parser);
7712 p_kind = PRAGMA_OMP_PARALLEL_SECTIONS;
7713 p_name = "#pragma omp parallel sections";
7714 mask |= OMP_SECTIONS_CLAUSE_MASK;
7715 mask &= ~(1u << PRAGMA_OMP_CLAUSE_NOWAIT);
7719 clauses = c_parser_omp_all_clauses (parser, mask, p_name);
7723 case PRAGMA_OMP_PARALLEL:
7724 block = c_begin_omp_parallel ();
7725 c_parser_statement (parser);
7726 stmt = c_finish_omp_parallel (clauses, block);
7729 case PRAGMA_OMP_PARALLEL_FOR:
7730 block = c_begin_omp_parallel ();
7731 c_split_parallel_clauses (clauses, &par_clause, &ws_clause);
7732 stmt = c_parser_omp_for_loop (parser);
7734 OMP_FOR_CLAUSES (stmt) = ws_clause;
7735 stmt = c_finish_omp_parallel (par_clause, block);
7736 OMP_PARALLEL_COMBINED (stmt) = 1;
7739 case PRAGMA_OMP_PARALLEL_SECTIONS:
7740 block = c_begin_omp_parallel ();
7741 c_split_parallel_clauses (clauses, &par_clause, &ws_clause);
7742 stmt = c_parser_omp_sections_scope (parser);
7744 OMP_SECTIONS_CLAUSES (stmt) = ws_clause;
7745 stmt = c_finish_omp_parallel (par_clause, block);
7746 OMP_PARALLEL_COMBINED (stmt) = 1;
7757 # pragma omp single single-clause[optseq] new-line
7761 #define OMP_SINGLE_CLAUSE_MASK \
7762 ( (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
7763 | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
7764 | (1u << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \
7765 | (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
7768 c_parser_omp_single (c_parser *parser)
7770 tree stmt = make_node (OMP_SINGLE);
7771 TREE_TYPE (stmt) = void_type_node;
7773 OMP_SINGLE_CLAUSES (stmt)
7774 = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK,
7775 "#pragma omp single");
7776 OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser);
7778 return add_stmt (stmt);
7782 /* Main entry point to parsing most OpenMP pragmas. */
7785 c_parser_omp_construct (c_parser *parser)
7787 enum pragma_kind p_kind;
7791 loc = c_parser_peek_token (parser)->location;
7792 p_kind = c_parser_peek_token (parser)->pragma_kind;
7793 c_parser_consume_pragma (parser);
7795 /* For all constructs below except #pragma omp atomic
7796 MUST_NOT_THROW catch handlers are needed when exceptions
7798 if (p_kind != PRAGMA_OMP_ATOMIC)
7799 c_maybe_initialize_eh ();
7803 case PRAGMA_OMP_ATOMIC:
7804 c_parser_omp_atomic (parser);
7806 case PRAGMA_OMP_CRITICAL:
7807 stmt = c_parser_omp_critical (parser);
7809 case PRAGMA_OMP_FOR:
7810 stmt = c_parser_omp_for (parser);
7812 case PRAGMA_OMP_MASTER:
7813 stmt = c_parser_omp_master (parser);
7815 case PRAGMA_OMP_ORDERED:
7816 stmt = c_parser_omp_ordered (parser);
7818 case PRAGMA_OMP_PARALLEL:
7819 stmt = c_parser_omp_parallel (parser);
7821 case PRAGMA_OMP_SECTIONS:
7822 stmt = c_parser_omp_sections (parser);
7824 case PRAGMA_OMP_SINGLE:
7825 stmt = c_parser_omp_single (parser);
7832 SET_EXPR_LOCATION (stmt, loc);
7837 # pragma omp threadprivate (variable-list) */
7840 c_parser_omp_threadprivate (c_parser *parser)
7844 c_parser_consume_pragma (parser);
7845 vars = c_parser_omp_var_list_parens (parser, 0, NULL);
7847 if (!targetm.have_tls)
7848 sorry ("threadprivate variables not supported in this target");
7850 /* Mark every variable in VARS to be assigned thread local storage. */
7851 for (t = vars; t; t = TREE_CHAIN (t))
7853 tree v = TREE_PURPOSE (t);
7855 /* If V had already been marked threadprivate, it doesn't matter
7856 whether it had been used prior to this point. */
7857 if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v))
7858 error ("%qE declared %<threadprivate%> after first use", v);
7859 else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v))
7860 error ("automatic variable %qE cannot be %<threadprivate%>", v);
7861 else if (! COMPLETE_TYPE_P (TREE_TYPE (v)))
7862 error ("%<threadprivate%> %qE has incomplete type", v);
7865 if (! DECL_THREAD_LOCAL_P (v))
7867 DECL_TLS_MODEL (v) = decl_default_tls_model (v);
7868 /* If rtl has been already set for this var, call
7869 make_decl_rtl once again, so that encode_section_info
7870 has a chance to look at the new decl flags. */
7871 if (DECL_RTL_SET_P (v))
7874 C_DECL_THREADPRIVATE_P (v) = 1;
7878 c_parser_skip_to_pragma_eol (parser);
7882 /* Parse a single source file. */
7887 /* Use local storage to begin. If the first token is a pragma, parse it.
7888 If it is #pragma GCC pch_preprocess, then this will load a PCH file
7889 which will cause garbage collection. */
7892 memset (&tparser, 0, sizeof tparser);
7893 the_parser = &tparser;
7895 if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS)
7896 c_parser_pragma_pch_preprocess (&tparser);
7898 the_parser = GGC_NEW (c_parser);
7899 *the_parser = tparser;
7901 c_parser_translation_unit (the_parser);
7905 #include "gt-c-parser.h"