| blob | a798ec3dc01b3d8e626aab3f6d75b50b02980635 |
1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
22 /* This file defines the grammar of C and that of Objective C.
23 ifobjc ... end ifobjc conditionals contain code for Objective C only.
24 ifc ... end ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
31 ifc
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
33 end ifc
35 %{
36 #include "config.h"
37 #include "system.h"
38 #include "coretypes.h"
39 #include "tm.h"
40 #include "tree.h"
41 #include "input.h"
42 #include "cpplib.h"
43 #include "intl.h"
44 #include "timevar.h"
45 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
46 #include "c-tree.h"
47 #include "flags.h"
48 #include "varray.h"
49 #include "output.h"
50 #include "toplev.h"
51 #include "ggc.h"
53 ifobjc
54 #include "objc-act.h"
55 end ifobjc
57 /* Like YYERROR but do call yyerror. */
58 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
60 /* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
67 static short *malloced_yyss;
68 static void *malloced_yyvs;
70 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
71 do { \
72 size_t newsize; \
73 short *newss; \
74 YYSTYPE *newvs; \
75 newsize = *(YYSSZ) *= 2; \
76 if (malloced_yyss) \
77 { \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
80 } \
81 else \
82 { \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
85 if (newss) \
86 memcpy (newss, *(SS), (SSSIZE)); \
87 if (newvs) \
88 memcpy (newvs, *(VS), (VSSIZE)); \
89 } \
90 if (!newss || !newvs) \
91 { \
92 yyerror (MSG); \
93 return 2; \
94 } \
95 *(SS) = newss; \
96 *(VS) = newvs; \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
99 } while (0)
100 %}
102 %start program
104 %union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
109 %token IDENTIFIER
111 /* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
114 %token TYPENAME
116 /* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118 %token SCSPEC /* Storage class other than static. */
119 %token STATIC /* Static storage class. */
121 /* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
123 %token TYPESPEC
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
127 %token TYPE_QUAL
129 /* Character or numeric constants.
130 yylval is the node for the constant. */
131 %token CONSTANT
133 /* String constants in raw form.
134 yylval is a STRING_CST node. */
136 %token STRING
138 /* "...", used for functions with variable arglists. */
139 %token ELLIPSIS
141 /* the reserved words */
142 /* SCO include files test "ASM", so use something else. */
143 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145 %token ATTRIBUTE EXTENSION LABEL
146 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147 %token PTR_VALUE PTR_BASE PTR_EXTENT
148 %token FUNC_NAME
150 /* Add precedence rules to solve dangling else s/r conflict */
151 %nonassoc IF
152 %nonassoc ELSE
154 /* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
158 %right <code> ASSIGN '='
159 %right <code> '?' ':'
160 %left <code> OROR
161 %left <code> ANDAND
162 %left <code> '|'
163 %left <code> '^'
164 %left <code> '&'
165 %left <code> EQCOMPARE
166 %left <code> ARITHCOMPARE
167 %left <code> LSHIFT RSHIFT
168 %left <code> '+' '-'
169 %left <code> '*' '/' '%'
170 %right <code> UNARY PLUSPLUS MINUSMINUS
171 %left HYPERUNARY
172 %left <code> POINTSAT '.' '(' '['
174 /* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
178 %token OBJC_STRING
180 %type <code> unop
181 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
182 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
184 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
185 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
186 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
187 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
188 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
189 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
190 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
191 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
192 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
193 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
194 %type <ttype> declspecs_ts declspecs_nots
195 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
196 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
197 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
198 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
199 %type <ttype> typespec_nonreserved_nonattr
201 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
202 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
203 %type <ttype> init maybeasm
204 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
205 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
206 %type <ttype> any_word extension
208 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
209 %type <ttype> do_stmt_start poplevel stmt label
211 %type <ttype> c99_block_start c99_block_end
212 %type <ttype> declarator
213 %type <ttype> notype_declarator after_type_declarator
214 %type <ttype> parm_declarator
215 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
216 %type <ttype> array_declarator
218 %type <ttype> structsp_attr structsp_nonattr
219 %type <ttype> component_decl_list component_decl_list2
220 %type <ttype> component_decl components components_notype component_declarator
221 %type <ttype> component_notype_declarator
222 %type <ttype> enumlist enumerator
223 %type <ttype> struct_head union_head enum_head
224 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
225 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
226 %type <ttype> xexpr parms parm firstparm identifiers
228 %type <ttype> parmlist parmlist_1 parmlist_2
229 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
230 %type <ttype> identifiers_or_typenames
232 %type <itype> setspecs setspecs_fp
234 %type <location> save_location
235 \f
236 ifobjc
237 /* the Objective-C nonterminals */
239 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
240 %type <ttype> methoddecl unaryselector keywordselector selector
241 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
242 %type <ttype> keywordexpr keywordarglist keywordarg
243 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
244 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
245 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
247 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
248 end ifobjc
249 \f
250 %{
251 /* Number of statements (loosely speaking) and compound statements
252 seen so far. */
253 static int stmt_count;
254 static int compstmt_count;
256 /* Input location of the end of the body of last simple_if;
257 used by the stmt-rule immediately after simple_if returns. */
258 static location_t if_stmt_locus;
261 /* List of types and structure classes of the current declaration. */
262 static GTY(()) tree current_declspecs;
263 static GTY(()) tree prefix_attributes;
265 /* List of all the attributes applying to the identifier currently being
266 declared; includes prefix_attributes and possibly some more attributes
267 just after a comma. */
268 static GTY(()) tree all_prefix_attributes;
270 /* Stack of saved values of current_declspecs, prefix_attributes and
271 all_prefix_attributes. */
272 static GTY(()) tree declspec_stack;
274 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
275 should be called from the productions making use of setspecs. */
276 #define PUSH_DECLSPEC_STACK \
277 do { \
278 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
279 all_prefix_attributes), \
280 current_declspecs, \
281 declspec_stack); \
282 } while (0)
284 #define POP_DECLSPEC_STACK \
285 do { \
286 current_declspecs = TREE_VALUE (declspec_stack); \
287 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
288 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
289 declspec_stack = TREE_CHAIN (declspec_stack); \
290 } while (0)
292 /* For __extension__, save/restore the warning flags which are
293 controlled by __extension__. */
294 #define SAVE_EXT_FLAGS() \
295 size_int (pedantic \
296 | (warn_pointer_arith << 1) \
297 | (warn_traditional << 2) \
298 | (flag_iso << 3))
300 #define RESTORE_EXT_FLAGS(tval) \
301 do { \
302 int val = tree_low_cst (tval, 0); \
303 pedantic = val & 1; \
304 warn_pointer_arith = (val >> 1) & 1; \
305 warn_traditional = (val >> 2) & 1; \
306 flag_iso = (val >> 3) & 1; \
307 } while (0)
309 ifobjc
310 /* Objective-C specific parser/lexer information */
312 static enum tree_code objc_inherit_code;
313 static int objc_pq_context = 0, objc_public_flag = 0;
315 /* The following flag is needed to contextualize ObjC lexical analysis.
316 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
317 an identifier to an ObjC class, even if a class with that name
318 exists. */
319 static int objc_need_raw_identifier;
320 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
321 end ifobjc
323 ifc
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
325 end ifc
327 static bool parsing_iso_function_signature;
329 /* Tell yyparse how to print a token's value, if yydebug is set. */
331 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
333 static void yyprint (FILE *, int, YYSTYPE);
334 static void yyerror (const char *);
335 static int yylexname (void);
336 static inline int _yylex (void);
337 static int yylex (void);
338 static void init_reswords (void);
340 /* Initialisation routine for this file. */
341 void
342 c_parse_init (void)
343 {
344 init_reswords ();
345 }
347 %}
348 \f
349 %%
350 program: /* empty */
351 { if (pedantic)
352 pedwarn ("ISO C forbids an empty source file");
353 }
354 | extdefs
355 ;
357 /* the reason for the strange actions in this rule
358 is so that notype_initdecls when reached via datadef
359 can find a valid list of type and sc specs in $0. */
361 extdefs:
362 {$<ttype>$ = NULL_TREE; } extdef
363 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
364 ;
366 extdef:
367 extdef_1
368 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
369 ;
371 extdef_1:
372 fndef
373 | datadef
374 ifobjc
375 | objcdef
376 end ifobjc
377 | ASM_KEYWORD '(' expr ')' ';'
378 { STRIP_NOPS ($3);
379 if ((TREE_CODE ($3) == ADDR_EXPR
380 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
381 || TREE_CODE ($3) == STRING_CST)
382 assemble_asm ($3);
383 else
384 error ("argument of `asm' is not a constant string"); }
385 | extension extdef
386 { RESTORE_EXT_FLAGS ($1); }
387 ;
389 datadef:
390 setspecs notype_initdecls ';'
391 { if (pedantic)
392 error ("ISO C forbids data definition with no type or storage class");
393 else
394 warning ("data definition has no type or storage class");
396 POP_DECLSPEC_STACK; }
397 | declspecs_nots setspecs notype_initdecls ';'
398 { POP_DECLSPEC_STACK; }
399 | declspecs_ts setspecs initdecls ';'
400 { POP_DECLSPEC_STACK; }
401 | declspecs ';'
402 { shadow_tag ($1); }
403 | error ';'
404 | error '}'
405 | ';'
406 { if (pedantic)
407 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
408 ;
409 \f
410 fndef:
411 declspecs_ts setspecs declarator
412 { if (! start_function (current_declspecs, $3,
413 all_prefix_attributes))
414 YYERROR1;
415 }
416 old_style_parm_decls save_location
417 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
418 store_parm_decls (); }
419 compstmt_or_error
420 { finish_function (0, 1);
421 POP_DECLSPEC_STACK; }
422 | declspecs_ts setspecs declarator error
423 { POP_DECLSPEC_STACK; }
424 | declspecs_nots setspecs notype_declarator
425 { if (! start_function (current_declspecs, $3,
426 all_prefix_attributes))
427 YYERROR1;
428 }
429 old_style_parm_decls save_location
430 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
431 store_parm_decls (); }
432 compstmt_or_error
433 { finish_function (0, 1);
434 POP_DECLSPEC_STACK; }
435 | declspecs_nots setspecs notype_declarator error
436 { POP_DECLSPEC_STACK; }
437 | setspecs notype_declarator
438 { if (! start_function (NULL_TREE, $2,
439 all_prefix_attributes))
440 YYERROR1;
441 }
442 old_style_parm_decls save_location
443 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
444 store_parm_decls (); }
445 compstmt_or_error
446 { finish_function (0, 1);
447 POP_DECLSPEC_STACK; }
448 | setspecs notype_declarator error
449 { POP_DECLSPEC_STACK; }
450 ;
452 identifier:
453 IDENTIFIER
454 | TYPENAME
455 ifobjc
456 | OBJECTNAME
457 | CLASSNAME
458 end ifobjc
459 ;
461 unop: '&'
462 { $$ = ADDR_EXPR; }
463 | '-'
464 { $$ = NEGATE_EXPR; }
465 | '+'
466 { $$ = CONVERT_EXPR;
467 ifc
468 if (warn_traditional && !in_system_header)
469 warning ("traditional C rejects the unary plus operator");
470 end ifc
471 }
472 | PLUSPLUS
473 { $$ = PREINCREMENT_EXPR; }
474 | MINUSMINUS
475 { $$ = PREDECREMENT_EXPR; }
476 | '~'
477 { $$ = BIT_NOT_EXPR; }
478 | '!'
479 { $$ = TRUTH_NOT_EXPR; }
480 ;
482 expr: nonnull_exprlist
483 { $$ = build_compound_expr ($1); }
484 ;
486 exprlist:
487 /* empty */
488 { $$ = NULL_TREE; }
489 | nonnull_exprlist
490 ;
492 nonnull_exprlist:
493 expr_no_commas
494 { $$ = build_tree_list (NULL_TREE, $1); }
495 | nonnull_exprlist ',' expr_no_commas
496 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
497 ;
499 unary_expr:
500 primary
501 | '*' cast_expr %prec UNARY
502 { $$ = build_indirect_ref ($2, "unary *"); }
503 /* __extension__ turns off -pedantic for following primary. */
504 | extension cast_expr %prec UNARY
505 { $$ = $2;
506 RESTORE_EXT_FLAGS ($1); }
507 | unop cast_expr %prec UNARY
508 { $$ = build_unary_op ($1, $2, 0);
509 overflow_warning ($$); }
510 /* Refer to the address of a label as a pointer. */
511 | ANDAND identifier
512 { $$ = finish_label_address_expr ($2); }
513 | sizeof unary_expr %prec UNARY
514 { skip_evaluation--;
515 if (TREE_CODE ($2) == COMPONENT_REF
516 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
517 error ("`sizeof' applied to a bit-field");
518 $$ = c_sizeof (TREE_TYPE ($2)); }
519 | sizeof '(' typename ')' %prec HYPERUNARY
520 { skip_evaluation--;
521 $$ = c_sizeof (groktypename ($3)); }
522 | alignof unary_expr %prec UNARY
523 { skip_evaluation--;
524 $$ = c_alignof_expr ($2); }
525 | alignof '(' typename ')' %prec HYPERUNARY
526 { skip_evaluation--;
527 $$ = c_alignof (groktypename ($3)); }
528 | REALPART cast_expr %prec UNARY
529 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
530 | IMAGPART cast_expr %prec UNARY
531 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
532 ;
534 sizeof:
535 SIZEOF { skip_evaluation++; }
536 ;
538 alignof:
539 ALIGNOF { skip_evaluation++; }
540 ;
542 typeof:
543 TYPEOF { skip_evaluation++; }
544 ;
546 cast_expr:
547 unary_expr
548 | '(' typename ')' cast_expr %prec UNARY
549 { $$ = c_cast_expr ($2, $4); }
550 ;
552 expr_no_commas:
553 cast_expr
554 | expr_no_commas '+' expr_no_commas
555 { $$ = parser_build_binary_op ($2, $1, $3); }
556 | expr_no_commas '-' expr_no_commas
557 { $$ = parser_build_binary_op ($2, $1, $3); }
558 | expr_no_commas '*' expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas '/' expr_no_commas
561 { $$ = parser_build_binary_op ($2, $1, $3); }
562 | expr_no_commas '%' expr_no_commas
563 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas LSHIFT expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas RSHIFT expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas ARITHCOMPARE expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas EQCOMPARE expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas '&' expr_no_commas
573 { $$ = parser_build_binary_op ($2, $1, $3); }
574 | expr_no_commas '|' expr_no_commas
575 { $$ = parser_build_binary_op ($2, $1, $3); }
576 | expr_no_commas '^' expr_no_commas
577 { $$ = parser_build_binary_op ($2, $1, $3); }
578 | expr_no_commas ANDAND
579 { $1 = c_common_truthvalue_conversion
580 (default_conversion ($1));
581 skip_evaluation += $1 == boolean_false_node; }
582 expr_no_commas
583 { skip_evaluation -= $1 == boolean_false_node;
584 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
585 | expr_no_commas OROR
586 { $1 = c_common_truthvalue_conversion
587 (default_conversion ($1));
588 skip_evaluation += $1 == boolean_true_node; }
589 expr_no_commas
590 { skip_evaluation -= $1 == boolean_true_node;
591 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
592 | expr_no_commas '?'
593 { $1 = c_common_truthvalue_conversion
594 (default_conversion ($1));
595 skip_evaluation += $1 == boolean_false_node; }
596 expr ':'
597 { skip_evaluation += (($1 == boolean_true_node)
598 - ($1 == boolean_false_node)); }
599 expr_no_commas
600 { skip_evaluation -= $1 == boolean_true_node;
601 $$ = build_conditional_expr ($1, $4, $7); }
602 | expr_no_commas '?'
603 { if (pedantic)
604 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
605 /* Make sure first operand is calculated only once. */
606 $<ttype>2 = save_expr ($1);
607 $1 = c_common_truthvalue_conversion
608 (default_conversion ($<ttype>2));
609 skip_evaluation += $1 == boolean_true_node; }
610 ':' expr_no_commas
611 { skip_evaluation -= $1 == boolean_true_node;
612 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
613 | expr_no_commas '=' expr_no_commas
614 { char class;
615 $$ = build_modify_expr ($1, NOP_EXPR, $3);
616 class = TREE_CODE_CLASS (TREE_CODE ($$));
617 if (IS_EXPR_CODE_CLASS (class))
618 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
619 }
620 | expr_no_commas ASSIGN expr_no_commas
621 { char class;
622 $$ = build_modify_expr ($1, $2, $3);
623 /* This inhibits warnings in
624 c_common_truthvalue_conversion. */
625 class = TREE_CODE_CLASS (TREE_CODE ($$));
626 if (IS_EXPR_CODE_CLASS (class))
627 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
628 }
629 ;
631 primary:
632 IDENTIFIER
633 {
634 if (yychar == YYEMPTY)
635 yychar = YYLEX;
636 $$ = build_external_ref ($1, yychar == '(');
637 }
638 | CONSTANT
639 | STRING
640 | FUNC_NAME
641 { $$ = fname_decl (C_RID_CODE ($$), $$); }
642 | '(' typename ')' '{'
643 { start_init (NULL_TREE, NULL, 0);
644 $2 = groktypename ($2);
645 really_start_incremental_init ($2); }
646 initlist_maybe_comma '}' %prec UNARY
647 { tree constructor = pop_init_level (0);
648 tree type = $2;
649 finish_init ();
651 if (pedantic && ! flag_isoc99)
652 pedwarn ("ISO C89 forbids compound literals");
653 $$ = build_compound_literal (type, constructor);
654 }
655 | '(' expr ')'
656 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
657 if (IS_EXPR_CODE_CLASS (class))
658 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
659 $$ = $2; }
660 | '(' error ')'
661 { $$ = error_mark_node; }
662 | compstmt_primary_start compstmt_nostart ')'
663 { tree saved_last_tree;
665 if (pedantic)
666 pedwarn ("ISO C forbids braced-groups within expressions");
667 saved_last_tree = COMPOUND_BODY ($1);
668 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
669 last_tree = saved_last_tree;
670 TREE_CHAIN (last_tree) = NULL_TREE;
671 if (!last_expr_type)
672 last_expr_type = void_type_node;
673 $$ = build1 (STMT_EXPR, last_expr_type, $1);
674 TREE_SIDE_EFFECTS ($$) = 1;
675 }
676 | compstmt_primary_start error ')'
677 {
678 last_tree = COMPOUND_BODY ($1);
679 TREE_CHAIN (last_tree) = NULL_TREE;
680 $$ = error_mark_node;
681 }
682 | primary '(' exprlist ')' %prec '.'
683 { $$ = build_function_call ($1, $3); }
684 | VA_ARG '(' expr_no_commas ',' typename ')'
685 { $$ = build_va_arg ($3, groktypename ($5)); }
687 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
688 {
689 tree c;
691 c = fold ($3);
692 STRIP_NOPS (c);
693 if (TREE_CODE (c) != INTEGER_CST)
694 error ("first argument to __builtin_choose_expr not a constant");
695 $$ = integer_zerop (c) ? $7 : $5;
696 }
697 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
698 {
699 tree e1, e2;
701 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
702 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
704 $$ = comptypes (e1, e2, COMPARE_STRICT)
705 ? build_int_2 (1, 0) : build_int_2 (0, 0);
706 }
707 | primary '[' expr ']' %prec '.'
708 { $$ = build_array_ref ($1, $3); }
709 | primary '.' identifier
710 {
711 ifobjc
712 if (!is_public ($1, $3))
713 $$ = error_mark_node;
714 else
715 end ifobjc
716 $$ = build_component_ref ($1, $3);
717 }
718 | primary POINTSAT identifier
719 {
720 tree expr = build_indirect_ref ($1, "->");
722 ifobjc
723 if (!is_public (expr, $3))
724 $$ = error_mark_node;
725 else
726 end ifobjc
727 $$ = build_component_ref (expr, $3);
728 }
729 | primary PLUSPLUS
730 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
731 | primary MINUSMINUS
732 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
733 ifobjc
734 | objcmessageexpr
735 { $$ = build_message_expr ($1); }
736 | objcselectorexpr
737 { $$ = build_selector_expr ($1); }
738 | objcprotocolexpr
739 { $$ = build_protocol_expr ($1); }
740 | objcencodeexpr
741 { $$ = build_encode_expr ($1); }
742 | OBJC_STRING
743 { $$ = build_objc_string_object ($1); }
744 end ifobjc
745 ;
747 old_style_parm_decls:
748 old_style_parm_decls_1
749 {
750 parsing_iso_function_signature = false; /* Reset after decls. */
751 }
752 ;
754 old_style_parm_decls_1:
755 /* empty */
756 {
757 if (warn_traditional && !in_system_header
758 && parsing_iso_function_signature)
759 warning ("traditional C rejects ISO C style function definitions");
760 parsing_iso_function_signature = false; /* Reset after warning. */
761 }
762 | datadecls
763 ;
765 /* The following are analogous to lineno_decl, decls and decl
766 except that they do not allow nested functions.
767 They are used for old-style parm decls. */
768 lineno_datadecl:
769 save_location datadecl
770 { }
771 ;
773 datadecls:
774 lineno_datadecl
775 | errstmt
776 | datadecls lineno_datadecl
777 | lineno_datadecl errstmt
778 ;
780 /* We don't allow prefix attributes here because they cause reduce/reduce
781 conflicts: we can't know whether we're parsing a function decl with
782 attribute suffix, or function defn with attribute prefix on first old
783 style parm. */
784 datadecl:
785 declspecs_ts_nosa setspecs initdecls ';'
786 { POP_DECLSPEC_STACK; }
787 | declspecs_nots_nosa setspecs notype_initdecls ';'
788 { POP_DECLSPEC_STACK; }
789 | declspecs_ts_nosa ';'
790 { shadow_tag_warned ($1, 1);
791 pedwarn ("empty declaration"); }
792 | declspecs_nots_nosa ';'
793 { pedwarn ("empty declaration"); }
794 ;
796 /* This combination which saves a lineno before a decl
797 is the normal thing to use, rather than decl itself.
798 This is to avoid shift/reduce conflicts in contexts
799 where statement labels are allowed. */
800 lineno_decl:
801 save_location decl
802 { }
803 ;
805 /* records the type and storage class specs to use for processing
806 the declarators that follow.
807 Maintains a stack of outer-level values of current_declspecs,
808 for the sake of parm declarations nested in function declarators. */
809 setspecs: /* empty */
810 { pending_xref_error ();
811 PUSH_DECLSPEC_STACK;
812 split_specs_attrs ($<ttype>0,
813 ¤t_declspecs, &prefix_attributes);
814 all_prefix_attributes = prefix_attributes; }
815 ;
817 /* Possibly attributes after a comma, which should reset all_prefix_attributes
818 to prefix_attributes with these ones chained on the front. */
819 maybe_resetattrs:
820 maybe_attribute
821 { all_prefix_attributes = chainon ($1, prefix_attributes); }
822 ;
824 decl:
825 declspecs_ts setspecs initdecls ';'
826 { POP_DECLSPEC_STACK; }
827 | declspecs_nots setspecs notype_initdecls ';'
828 { POP_DECLSPEC_STACK; }
829 | declspecs_ts setspecs nested_function
830 { POP_DECLSPEC_STACK; }
831 | declspecs_nots setspecs notype_nested_function
832 { POP_DECLSPEC_STACK; }
833 | declspecs ';'
834 { shadow_tag ($1); }
835 | extension decl
836 { RESTORE_EXT_FLAGS ($1); }
837 ;
839 /* A list of declaration specifiers. These are:
841 - Storage class specifiers (scspec), which for GCC currently includes
842 function specifiers ("inline").
844 - Type specifiers (typespec_*).
846 - Type qualifiers (TYPE_QUAL).
848 - Attribute specifier lists (attributes).
850 These are stored as a TREE_LIST; the head of the list is the last
851 item in the specifier list. Each entry in the list has either a
852 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
853 is a single other specifier or qualifier; and a TREE_CHAIN that is the
854 rest of the list. TREE_STATIC is set on the list if something other
855 than a storage class specifier or attribute has been seen; this is used
856 to warn for the obsolescent usage of storage class specifiers other than
857 at the start of the list. (Doing this properly would require function
858 specifiers to be handled separately from storage class specifiers.)
860 The various cases below are classified according to:
862 (a) Whether a storage class specifier is included or not; some
863 places in the grammar disallow storage class specifiers (_sc or _nosc).
865 (b) Whether a type specifier has been seen; after a type specifier,
866 a typedef name is an identifier to redeclare (_ts or _nots).
868 (c) Whether the list starts with an attribute; in certain places,
869 the grammar requires specifiers that don't start with an attribute
870 (_sa or _nosa).
872 (d) Whether the list ends with an attribute (or a specifier such that
873 any following attribute would have been parsed as part of that specifier);
874 this avoids shift-reduce conflicts in the parsing of attributes
875 (_ea or _noea).
877 TODO:
879 (i) Distinguish between function specifiers and storage class specifiers,
880 at least for the purpose of warnings about obsolescent usage.
882 (ii) Halve the number of productions here by eliminating the _sc/_nosc
883 distinction and instead checking where required that storage class
884 specifiers aren't present. */
886 /* Declspecs which contain at least one type specifier or typedef name.
887 (Just `const' or `volatile' is not enough.)
888 A typedef'd name following these is taken as a name to be declared.
889 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
891 declspecs_nosc_nots_nosa_noea:
892 TYPE_QUAL
893 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
894 TREE_STATIC ($$) = 1; }
895 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
896 { $$ = tree_cons (NULL_TREE, $2, $1);
897 TREE_STATIC ($$) = 1; }
898 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
899 { $$ = tree_cons (NULL_TREE, $2, $1);
900 TREE_STATIC ($$) = 1; }
901 ;
903 declspecs_nosc_nots_nosa_ea:
904 declspecs_nosc_nots_nosa_noea attributes
905 { $$ = tree_cons ($2, NULL_TREE, $1);
906 TREE_STATIC ($$) = TREE_STATIC ($1); }
907 ;
909 declspecs_nosc_nots_sa_noea:
910 declspecs_nosc_nots_sa_noea TYPE_QUAL
911 { $$ = tree_cons (NULL_TREE, $2, $1);
912 TREE_STATIC ($$) = 1; }
913 | declspecs_nosc_nots_sa_ea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
916 ;
918 declspecs_nosc_nots_sa_ea:
919 attributes
920 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
921 TREE_STATIC ($$) = 0; }
922 | declspecs_nosc_nots_sa_noea attributes
923 { $$ = tree_cons ($2, NULL_TREE, $1);
924 TREE_STATIC ($$) = TREE_STATIC ($1); }
925 ;
927 declspecs_nosc_ts_nosa_noea:
928 typespec_nonattr
929 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
930 TREE_STATIC ($$) = 1; }
931 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
932 { $$ = tree_cons (NULL_TREE, $2, $1);
933 TREE_STATIC ($$) = 1; }
934 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
935 { $$ = tree_cons (NULL_TREE, $2, $1);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
938 { $$ = tree_cons (NULL_TREE, $2, $1);
939 TREE_STATIC ($$) = 1; }
940 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declspecs_nosc_nots_nosa_noea typespec_nonattr
944 { $$ = tree_cons (NULL_TREE, $2, $1);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_nots_nosa_ea typespec_nonattr
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
949 ;
951 declspecs_nosc_ts_nosa_ea:
952 typespec_attr
953 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
954 TREE_STATIC ($$) = 1; }
955 | declspecs_nosc_ts_nosa_noea attributes
956 { $$ = tree_cons ($2, NULL_TREE, $1);
957 TREE_STATIC ($$) = TREE_STATIC ($1); }
958 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
959 { $$ = tree_cons (NULL_TREE, $2, $1);
960 TREE_STATIC ($$) = 1; }
961 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
964 | declspecs_nosc_nots_nosa_noea typespec_attr
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_nots_nosa_ea typespec_attr
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
970 ;
972 declspecs_nosc_ts_sa_noea:
973 declspecs_nosc_ts_sa_noea TYPE_QUAL
974 { $$ = tree_cons (NULL_TREE, $2, $1);
975 TREE_STATIC ($$) = 1; }
976 | declspecs_nosc_ts_sa_ea TYPE_QUAL
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
985 | declspecs_nosc_nots_sa_noea typespec_nonattr
986 { $$ = tree_cons (NULL_TREE, $2, $1);
987 TREE_STATIC ($$) = 1; }
988 | declspecs_nosc_nots_sa_ea typespec_nonattr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
991 ;
993 declspecs_nosc_ts_sa_ea:
994 declspecs_nosc_ts_sa_noea attributes
995 { $$ = tree_cons ($2, NULL_TREE, $1);
996 TREE_STATIC ($$) = TREE_STATIC ($1); }
997 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
998 { $$ = tree_cons (NULL_TREE, $2, $1);
999 TREE_STATIC ($$) = 1; }
1000 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_nots_sa_noea typespec_attr
1004 { $$ = tree_cons (NULL_TREE, $2, $1);
1005 TREE_STATIC ($$) = 1; }
1006 | declspecs_nosc_nots_sa_ea typespec_attr
1007 { $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = 1; }
1009 ;
1011 declspecs_sc_nots_nosa_noea:
1012 scspec
1013 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1014 TREE_STATIC ($$) = 0; }
1015 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1016 { $$ = tree_cons (NULL_TREE, $2, $1);
1017 TREE_STATIC ($$) = 1; }
1018 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1019 { $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = 1; }
1021 | declspecs_nosc_nots_nosa_noea scspec
1022 { if (extra_warnings && TREE_STATIC ($1))
1023 warning ("`%s' is not at beginning of declaration",
1024 IDENTIFIER_POINTER ($2));
1025 $$ = tree_cons (NULL_TREE, $2, $1);
1026 TREE_STATIC ($$) = TREE_STATIC ($1); }
1027 | declspecs_nosc_nots_nosa_ea scspec
1028 { if (extra_warnings && TREE_STATIC ($1))
1029 warning ("`%s' is not at beginning of declaration",
1030 IDENTIFIER_POINTER ($2));
1031 $$ = tree_cons (NULL_TREE, $2, $1);
1032 TREE_STATIC ($$) = TREE_STATIC ($1); }
1033 | declspecs_sc_nots_nosa_noea scspec
1034 { if (extra_warnings && TREE_STATIC ($1))
1035 warning ("`%s' is not at beginning of declaration",
1036 IDENTIFIER_POINTER ($2));
1037 $$ = tree_cons (NULL_TREE, $2, $1);
1038 TREE_STATIC ($$) = TREE_STATIC ($1); }
1039 | declspecs_sc_nots_nosa_ea scspec
1040 { if (extra_warnings && TREE_STATIC ($1))
1041 warning ("`%s' is not at beginning of declaration",
1042 IDENTIFIER_POINTER ($2));
1043 $$ = tree_cons (NULL_TREE, $2, $1);
1044 TREE_STATIC ($$) = TREE_STATIC ($1); }
1045 ;
1047 declspecs_sc_nots_nosa_ea:
1048 declspecs_sc_nots_nosa_noea attributes
1049 { $$ = tree_cons ($2, NULL_TREE, $1);
1050 TREE_STATIC ($$) = TREE_STATIC ($1); }
1051 ;
1053 declspecs_sc_nots_sa_noea:
1054 declspecs_sc_nots_sa_noea TYPE_QUAL
1055 { $$ = tree_cons (NULL_TREE, $2, $1);
1056 TREE_STATIC ($$) = 1; }
1057 | declspecs_sc_nots_sa_ea TYPE_QUAL
1058 { $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = 1; }
1060 | declspecs_nosc_nots_sa_noea scspec
1061 { if (extra_warnings && TREE_STATIC ($1))
1062 warning ("`%s' is not at beginning of declaration",
1063 IDENTIFIER_POINTER ($2));
1064 $$ = tree_cons (NULL_TREE, $2, $1);
1065 TREE_STATIC ($$) = TREE_STATIC ($1); }
1066 | declspecs_nosc_nots_sa_ea scspec
1067 { if (extra_warnings && TREE_STATIC ($1))
1068 warning ("`%s' is not at beginning of declaration",
1069 IDENTIFIER_POINTER ($2));
1070 $$ = tree_cons (NULL_TREE, $2, $1);
1071 TREE_STATIC ($$) = TREE_STATIC ($1); }
1072 | declspecs_sc_nots_sa_noea scspec
1073 { if (extra_warnings && TREE_STATIC ($1))
1074 warning ("`%s' is not at beginning of declaration",
1075 IDENTIFIER_POINTER ($2));
1076 $$ = tree_cons (NULL_TREE, $2, $1);
1077 TREE_STATIC ($$) = TREE_STATIC ($1); }
1078 | declspecs_sc_nots_sa_ea scspec
1079 { if (extra_warnings && TREE_STATIC ($1))
1080 warning ("`%s' is not at beginning of declaration",
1081 IDENTIFIER_POINTER ($2));
1082 $$ = tree_cons (NULL_TREE, $2, $1);
1083 TREE_STATIC ($$) = TREE_STATIC ($1); }
1084 ;
1086 declspecs_sc_nots_sa_ea:
1087 declspecs_sc_nots_sa_noea attributes
1088 { $$ = tree_cons ($2, NULL_TREE, $1);
1089 TREE_STATIC ($$) = TREE_STATIC ($1); }
1090 ;
1092 declspecs_sc_ts_nosa_noea:
1093 declspecs_sc_ts_nosa_noea TYPE_QUAL
1094 { $$ = tree_cons (NULL_TREE, $2, $1);
1095 TREE_STATIC ($$) = 1; }
1096 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1097 { $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = 1; }
1099 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1100 { $$ = tree_cons (NULL_TREE, $2, $1);
1101 TREE_STATIC ($$) = 1; }
1102 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1103 { $$ = tree_cons (NULL_TREE, $2, $1);
1104 TREE_STATIC ($$) = 1; }
1105 | declspecs_sc_nots_nosa_noea typespec_nonattr
1106 { $$ = tree_cons (NULL_TREE, $2, $1);
1107 TREE_STATIC ($$) = 1; }
1108 | declspecs_sc_nots_nosa_ea typespec_nonattr
1109 { $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = 1; }
1111 | declspecs_nosc_ts_nosa_noea scspec
1112 { if (extra_warnings && TREE_STATIC ($1))
1113 warning ("`%s' is not at beginning of declaration",
1114 IDENTIFIER_POINTER ($2));
1115 $$ = tree_cons (NULL_TREE, $2, $1);
1116 TREE_STATIC ($$) = TREE_STATIC ($1); }
1117 | declspecs_nosc_ts_nosa_ea scspec
1118 { if (extra_warnings && TREE_STATIC ($1))
1119 warning ("`%s' is not at beginning of declaration",
1120 IDENTIFIER_POINTER ($2));
1121 $$ = tree_cons (NULL_TREE, $2, $1);
1122 TREE_STATIC ($$) = TREE_STATIC ($1); }
1123 | declspecs_sc_ts_nosa_noea scspec
1124 { if (extra_warnings && TREE_STATIC ($1))
1125 warning ("`%s' is not at beginning of declaration",
1126 IDENTIFIER_POINTER ($2));
1127 $$ = tree_cons (NULL_TREE, $2, $1);
1128 TREE_STATIC ($$) = TREE_STATIC ($1); }
1129 | declspecs_sc_ts_nosa_ea scspec
1130 { if (extra_warnings && TREE_STATIC ($1))
1131 warning ("`%s' is not at beginning of declaration",
1132 IDENTIFIER_POINTER ($2));
1133 $$ = tree_cons (NULL_TREE, $2, $1);
1134 TREE_STATIC ($$) = TREE_STATIC ($1); }
1135 ;
1137 declspecs_sc_ts_nosa_ea:
1138 declspecs_sc_ts_nosa_noea attributes
1139 { $$ = tree_cons ($2, NULL_TREE, $1);
1140 TREE_STATIC ($$) = TREE_STATIC ($1); }
1141 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1142 { $$ = tree_cons (NULL_TREE, $2, $1);
1143 TREE_STATIC ($$) = 1; }
1144 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1145 { $$ = tree_cons (NULL_TREE, $2, $1);
1146 TREE_STATIC ($$) = 1; }
1147 | declspecs_sc_nots_nosa_noea typespec_attr
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_nots_nosa_ea typespec_attr
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1153 ;
1155 declspecs_sc_ts_sa_noea:
1156 declspecs_sc_ts_sa_noea TYPE_QUAL
1157 { $$ = tree_cons (NULL_TREE, $2, $1);
1158 TREE_STATIC ($$) = 1; }
1159 | declspecs_sc_ts_sa_ea TYPE_QUAL
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1166 { $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = 1; }
1168 | declspecs_sc_nots_sa_noea typespec_nonattr
1169 { $$ = tree_cons (NULL_TREE, $2, $1);
1170 TREE_STATIC ($$) = 1; }
1171 | declspecs_sc_nots_sa_ea typespec_nonattr
1172 { $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = 1; }
1174 | declspecs_nosc_ts_sa_noea scspec
1175 { if (extra_warnings && TREE_STATIC ($1))
1176 warning ("`%s' is not at beginning of declaration",
1177 IDENTIFIER_POINTER ($2));
1178 $$ = tree_cons (NULL_TREE, $2, $1);
1179 TREE_STATIC ($$) = TREE_STATIC ($1); }
1180 | declspecs_nosc_ts_sa_ea scspec
1181 { if (extra_warnings && TREE_STATIC ($1))
1182 warning ("`%s' is not at beginning of declaration",
1183 IDENTIFIER_POINTER ($2));
1184 $$ = tree_cons (NULL_TREE, $2, $1);
1185 TREE_STATIC ($$) = TREE_STATIC ($1); }
1186 | declspecs_sc_ts_sa_noea scspec
1187 { if (extra_warnings && TREE_STATIC ($1))
1188 warning ("`%s' is not at beginning of declaration",
1189 IDENTIFIER_POINTER ($2));
1190 $$ = tree_cons (NULL_TREE, $2, $1);
1191 TREE_STATIC ($$) = TREE_STATIC ($1); }
1192 | declspecs_sc_ts_sa_ea scspec
1193 { if (extra_warnings && TREE_STATIC ($1))
1194 warning ("`%s' is not at beginning of declaration",
1195 IDENTIFIER_POINTER ($2));
1196 $$ = tree_cons (NULL_TREE, $2, $1);
1197 TREE_STATIC ($$) = TREE_STATIC ($1); }
1198 ;
1200 declspecs_sc_ts_sa_ea:
1201 declspecs_sc_ts_sa_noea attributes
1202 { $$ = tree_cons ($2, NULL_TREE, $1);
1203 TREE_STATIC ($$) = TREE_STATIC ($1); }
1204 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1205 { $$ = tree_cons (NULL_TREE, $2, $1);
1206 TREE_STATIC ($$) = 1; }
1207 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1208 { $$ = tree_cons (NULL_TREE, $2, $1);
1209 TREE_STATIC ($$) = 1; }
1210 | declspecs_sc_nots_sa_noea typespec_attr
1211 { $$ = tree_cons (NULL_TREE, $2, $1);
1212 TREE_STATIC ($$) = 1; }
1213 | declspecs_sc_nots_sa_ea typespec_attr
1214 { $$ = tree_cons (NULL_TREE, $2, $1);
1215 TREE_STATIC ($$) = 1; }
1216 ;
1218 /* Particular useful classes of declspecs. */
1219 declspecs_ts:
1220 declspecs_nosc_ts_nosa_noea
1221 | declspecs_nosc_ts_nosa_ea
1222 | declspecs_nosc_ts_sa_noea
1223 | declspecs_nosc_ts_sa_ea
1224 | declspecs_sc_ts_nosa_noea
1225 | declspecs_sc_ts_nosa_ea
1226 | declspecs_sc_ts_sa_noea
1227 | declspecs_sc_ts_sa_ea
1228 ;
1230 declspecs_nots:
1231 declspecs_nosc_nots_nosa_noea
1232 | declspecs_nosc_nots_nosa_ea
1233 | declspecs_nosc_nots_sa_noea
1234 | declspecs_nosc_nots_sa_ea
1235 | declspecs_sc_nots_nosa_noea
1236 | declspecs_sc_nots_nosa_ea
1237 | declspecs_sc_nots_sa_noea
1238 | declspecs_sc_nots_sa_ea
1239 ;
1241 declspecs_ts_nosa:
1242 declspecs_nosc_ts_nosa_noea
1243 | declspecs_nosc_ts_nosa_ea
1244 | declspecs_sc_ts_nosa_noea
1245 | declspecs_sc_ts_nosa_ea
1246 ;
1248 declspecs_nots_nosa:
1249 declspecs_nosc_nots_nosa_noea
1250 | declspecs_nosc_nots_nosa_ea
1251 | declspecs_sc_nots_nosa_noea
1252 | declspecs_sc_nots_nosa_ea
1253 ;
1255 declspecs_nosc_ts:
1256 declspecs_nosc_ts_nosa_noea
1257 | declspecs_nosc_ts_nosa_ea
1258 | declspecs_nosc_ts_sa_noea
1259 | declspecs_nosc_ts_sa_ea
1260 ;
1262 declspecs_nosc_nots:
1263 declspecs_nosc_nots_nosa_noea
1264 | declspecs_nosc_nots_nosa_ea
1265 | declspecs_nosc_nots_sa_noea
1266 | declspecs_nosc_nots_sa_ea
1267 ;
1269 declspecs_nosc:
1270 declspecs_nosc_ts_nosa_noea
1271 | declspecs_nosc_ts_nosa_ea
1272 | declspecs_nosc_ts_sa_noea
1273 | declspecs_nosc_ts_sa_ea
1274 | declspecs_nosc_nots_nosa_noea
1275 | declspecs_nosc_nots_nosa_ea
1276 | declspecs_nosc_nots_sa_noea
1277 | declspecs_nosc_nots_sa_ea
1278 ;
1280 declspecs:
1281 declspecs_nosc_nots_nosa_noea
1282 | declspecs_nosc_nots_nosa_ea
1283 | declspecs_nosc_nots_sa_noea
1284 | declspecs_nosc_nots_sa_ea
1285 | declspecs_nosc_ts_nosa_noea
1286 | declspecs_nosc_ts_nosa_ea
1287 | declspecs_nosc_ts_sa_noea
1288 | declspecs_nosc_ts_sa_ea
1289 | declspecs_sc_nots_nosa_noea
1290 | declspecs_sc_nots_nosa_ea
1291 | declspecs_sc_nots_sa_noea
1292 | declspecs_sc_nots_sa_ea
1293 | declspecs_sc_ts_nosa_noea
1294 | declspecs_sc_ts_nosa_ea
1295 | declspecs_sc_ts_sa_noea
1296 | declspecs_sc_ts_sa_ea
1297 ;
1299 /* A (possibly empty) sequence of type qualifiers and attributes. */
1300 maybe_type_quals_attrs:
1301 /* empty */
1302 { $$ = NULL_TREE; }
1303 | declspecs_nosc_nots
1304 { $$ = $1; }
1305 ;
1307 /* A type specifier (but not a type qualifier).
1308 Once we have seen one of these in a declaration,
1309 if a typedef name appears then it is being redeclared.
1311 The _reserved versions start with a reserved word and may appear anywhere
1312 in the declaration specifiers; the _nonreserved versions may only
1313 appear before any other type specifiers, and after that are (if names)
1314 being redeclared.
1316 FIXME: should the _nonreserved version be restricted to names being
1317 redeclared only? The other entries there relate only the GNU extensions
1318 and Objective C, and are historically parsed thus, and don't make sense
1319 after other type specifiers, but it might be cleaner to count them as
1320 _reserved.
1322 _attr means: specifiers that either end with attributes,
1323 or are such that any following attributes would
1324 be parsed as part of the specifier.
1326 _nonattr: specifiers. */
1328 typespec_nonattr:
1329 typespec_reserved_nonattr
1330 | typespec_nonreserved_nonattr
1331 ;
1333 typespec_attr:
1334 typespec_reserved_attr
1335 ;
1337 typespec_reserved_nonattr:
1338 TYPESPEC
1339 { OBJC_NEED_RAW_IDENTIFIER (1); }
1340 | structsp_nonattr
1341 ;
1343 typespec_reserved_attr:
1344 structsp_attr
1345 ;
1347 typespec_nonreserved_nonattr:
1348 TYPENAME
1349 { /* For a typedef name, record the meaning, not the name.
1350 In case of `foo foo, bar;'. */
1351 $$ = lookup_name ($1); }
1352 ifobjc
1353 | CLASSNAME protocolrefs
1354 { $$ = get_static_reference ($1, $2); }
1355 | OBJECTNAME protocolrefs
1356 { $$ = get_object_reference ($2); }
1358 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1359 - nisse@lysator.liu.se */
1360 | non_empty_protocolrefs
1361 { $$ = get_object_reference ($1); }
1362 end ifobjc
1363 | typeof '(' expr ')'
1364 { skip_evaluation--; $$ = TREE_TYPE ($3); }
1365 | typeof '(' typename ')'
1366 { skip_evaluation--; $$ = groktypename ($3); }
1367 ;
1369 /* typespec_nonreserved_attr does not exist. */
1371 initdecls:
1372 initdcl
1373 | initdecls ',' maybe_resetattrs initdcl
1374 ;
1376 notype_initdecls:
1377 notype_initdcl
1378 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1379 ;
1381 maybeasm:
1382 /* empty */
1383 { $$ = NULL_TREE; }
1384 | ASM_KEYWORD '(' STRING ')'
1385 { $$ = $3; }
1386 ;
1388 initdcl:
1389 declarator maybeasm maybe_attribute '='
1390 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1391 chainon ($3, all_prefix_attributes));
1392 start_init ($<ttype>$, $2, global_bindings_p ()); }
1393 init
1394 /* Note how the declaration of the variable is in effect while its init is parsed! */
1395 { finish_init ();
1396 finish_decl ($<ttype>5, $6, $2); }
1397 | declarator maybeasm maybe_attribute
1398 { tree d = start_decl ($1, current_declspecs, 0,
1399 chainon ($3, all_prefix_attributes));
1400 finish_decl (d, NULL_TREE, $2);
1401 }
1402 ;
1404 notype_initdcl:
1405 notype_declarator maybeasm maybe_attribute '='
1406 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1407 chainon ($3, all_prefix_attributes));
1408 start_init ($<ttype>$, $2, global_bindings_p ()); }
1409 init
1410 /* Note how the declaration of the variable is in effect while its init is parsed! */
1411 { finish_init ();
1412 finish_decl ($<ttype>5, $6, $2); }
1413 | notype_declarator maybeasm maybe_attribute
1414 { tree d = start_decl ($1, current_declspecs, 0,
1415 chainon ($3, all_prefix_attributes));
1416 finish_decl (d, NULL_TREE, $2); }
1417 ;
1418 /* the * rules are dummies to accept the Apollo extended syntax
1419 so that the header files compile. */
1420 maybe_attribute:
1421 /* empty */
1422 { $$ = NULL_TREE; }
1423 | attributes
1424 { $$ = $1; }
1425 ;
1427 attributes:
1428 attribute
1429 { $$ = $1; }
1430 | attributes attribute
1431 { $$ = chainon ($1, $2); }
1432 ;
1434 attribute:
1435 ATTRIBUTE '(' '(' attribute_list ')' ')'
1436 { $$ = $4; }
1437 ;
1439 attribute_list:
1440 attrib
1441 { $$ = $1; }
1442 | attribute_list ',' attrib
1443 { $$ = chainon ($1, $3); }
1444 ;
1446 attrib:
1447 /* empty */
1448 { $$ = NULL_TREE; }
1449 | any_word
1450 { $$ = build_tree_list ($1, NULL_TREE); }
1451 | any_word '(' IDENTIFIER ')'
1452 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1453 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1454 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1455 | any_word '(' exprlist ')'
1456 { $$ = build_tree_list ($1, $3); }
1457 ;
1459 /* This still leaves out most reserved keywords,
1460 shouldn't we include them? */
1462 any_word:
1463 identifier
1464 | scspec
1465 | TYPESPEC
1466 | TYPE_QUAL
1467 ;
1469 scspec:
1470 STATIC
1471 | SCSPEC
1472 ;
1473 \f
1474 /* Initializers. `init' is the entry point. */
1476 init:
1477 expr_no_commas
1478 | '{'
1479 { really_start_incremental_init (NULL_TREE); }
1480 initlist_maybe_comma '}'
1481 { $$ = pop_init_level (0); }
1482 | error
1483 { $$ = error_mark_node; }
1484 ;
1486 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1487 initlist_maybe_comma:
1488 /* empty */
1489 { if (pedantic)
1490 pedwarn ("ISO C forbids empty initializer braces"); }
1491 | initlist1 maybecomma
1492 ;
1494 initlist1:
1495 initelt
1496 | initlist1 ',' initelt
1497 ;
1499 /* `initelt' is a single element of an initializer.
1500 It may use braces. */
1501 initelt:
1502 designator_list '=' initval
1503 { if (pedantic && ! flag_isoc99)
1504 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1505 | designator initval
1506 { if (pedantic)
1507 pedwarn ("obsolete use of designated initializer without `='"); }
1508 | identifier ':'
1509 { set_init_label ($1);
1510 if (pedantic)
1511 pedwarn ("obsolete use of designated initializer with `:'"); }
1512 initval
1513 {}
1514 | initval
1515 ;
1517 initval:
1518 '{'
1519 { push_init_level (0); }
1520 initlist_maybe_comma '}'
1521 { process_init_element (pop_init_level (0)); }
1522 | expr_no_commas
1523 { process_init_element ($1); }
1524 | error
1525 ;
1527 designator_list:
1528 designator
1529 | designator_list designator
1530 ;
1532 designator:
1533 '.' identifier
1534 { set_init_label ($2); }
1535 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1536 { set_init_index ($2, $4);
1537 if (pedantic)
1538 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1539 | '[' expr_no_commas ']'
1540 { set_init_index ($2, NULL_TREE); }
1541 ;
1542 \f
1543 nested_function:
1544 declarator
1545 { if (pedantic)
1546 pedwarn ("ISO C forbids nested functions");
1548 push_function_context ();
1549 if (! start_function (current_declspecs, $1,
1550 all_prefix_attributes))
1551 {
1552 pop_function_context ();
1553 YYERROR1;
1554 }
1555 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1556 }
1557 old_style_parm_decls save_location
1558 { tree decl = current_function_decl;
1559 DECL_SOURCE_LOCATION (decl) = $4;
1560 store_parm_decls (); }
1561 /* This used to use compstmt_or_error.
1562 That caused a bug with input `f(g) int g {}',
1563 where the use of YYERROR1 above caused an error
1564 which then was handled by compstmt_or_error.
1565 There followed a repeated execution of that same rule,
1566 which called YYERROR1 again, and so on. */
1567 compstmt
1568 { tree decl = current_function_decl;
1569 finish_function (1, 1);
1570 pop_function_context ();
1571 add_decl_stmt (decl); }
1572 ;
1574 notype_nested_function:
1575 notype_declarator
1576 { if (pedantic)
1577 pedwarn ("ISO C forbids nested functions");
1579 push_function_context ();
1580 if (! start_function (current_declspecs, $1,
1581 all_prefix_attributes))
1582 {
1583 pop_function_context ();
1584 YYERROR1;
1585 }
1586 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1587 }
1588 old_style_parm_decls save_location
1589 { tree decl = current_function_decl;
1590 DECL_SOURCE_LOCATION (decl) = $4;
1591 store_parm_decls (); }
1592 /* This used to use compstmt_or_error.
1593 That caused a bug with input `f(g) int g {}',
1594 where the use of YYERROR1 above caused an error
1595 which then was handled by compstmt_or_error.
1596 There followed a repeated execution of that same rule,
1597 which called YYERROR1 again, and so on. */
1598 compstmt
1599 { tree decl = current_function_decl;
1600 finish_function (1, 1);
1601 pop_function_context ();
1602 add_decl_stmt (decl); }
1603 ;
1605 /* Any kind of declarator (thus, all declarators allowed
1606 after an explicit typespec). */
1608 declarator:
1609 after_type_declarator
1610 | notype_declarator
1611 ;
1613 /* A declarator that is allowed only after an explicit typespec. */
1615 after_type_declarator:
1616 '(' maybe_attribute after_type_declarator ')'
1617 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1618 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1619 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1620 /* | after_type_declarator '(' error ')' %prec '.'
1621 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1622 poplevel (0, 0, 0); } */
1623 | after_type_declarator array_declarator %prec '.'
1624 { $$ = set_array_declarator_type ($2, $1, 0); }
1625 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1626 { $$ = make_pointer_declarator ($2, $3); }
1627 | TYPENAME
1628 ifobjc
1629 | OBJECTNAME
1630 end ifobjc
1631 ;
1633 /* Kinds of declarator that can appear in a parameter list
1634 in addition to notype_declarator. This is like after_type_declarator
1635 but does not allow a typedef name in parentheses as an identifier
1636 (because it would conflict with a function with that typedef as arg). */
1637 parm_declarator:
1638 parm_declarator_starttypename
1639 | parm_declarator_nostarttypename
1640 ;
1642 parm_declarator_starttypename:
1643 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1644 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1645 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1646 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1647 poplevel (0, 0, 0); } */
1648 | parm_declarator_starttypename array_declarator %prec '.'
1649 { $$ = set_array_declarator_type ($2, $1, 0); }
1650 | TYPENAME
1651 ifobjc
1652 | OBJECTNAME
1653 end ifobjc
1654 ;
1656 parm_declarator_nostarttypename:
1657 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_nostarttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1664 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1665 { $$ = make_pointer_declarator ($2, $3); }
1666 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1667 { $$ = make_pointer_declarator ($2, $3); }
1668 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1669 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1670 ;
1672 /* A declarator allowed whether or not there has been
1673 an explicit typespec. These cannot redeclare a typedef-name. */
1675 notype_declarator:
1676 notype_declarator '(' parmlist_or_identifiers %prec '.'
1677 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1678 /* | notype_declarator '(' error ')' %prec '.'
1679 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1680 poplevel (0, 0, 0); } */
1681 | '(' maybe_attribute notype_declarator ')'
1682 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1683 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1684 { $$ = make_pointer_declarator ($2, $3); }
1685 | notype_declarator array_declarator %prec '.'
1686 { $$ = set_array_declarator_type ($2, $1, 0); }
1687 | IDENTIFIER
1688 ;
1690 struct_head:
1691 STRUCT
1692 { $$ = NULL_TREE; }
1693 | STRUCT attributes
1694 { $$ = $2; }
1695 ;
1697 union_head:
1698 UNION
1699 { $$ = NULL_TREE; }
1700 | UNION attributes
1701 { $$ = $2; }
1702 ;
1704 enum_head:
1705 ENUM
1706 { $$ = NULL_TREE; }
1707 | ENUM attributes
1708 { $$ = $2; }
1709 ;
1711 /* structsp_attr: struct/union/enum specifiers that either
1712 end with attributes, or are such that any following attributes would
1713 be parsed as part of the struct/union/enum specifier.
1715 structsp_nonattr: other struct/union/enum specifiers. */
1717 structsp_attr:
1718 struct_head identifier '{'
1719 { $$ = start_struct (RECORD_TYPE, $2);
1720 /* Start scope of tag before parsing components. */
1721 }
1722 component_decl_list '}' maybe_attribute
1723 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1724 chainon ($1, $7)); }
1725 | struct_head '{' component_decl_list '}' maybe_attribute
1726 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1727 nreverse ($3), chainon ($1, $5));
1728 }
1729 | union_head identifier '{'
1730 { $$ = start_struct (UNION_TYPE, $2); }
1731 component_decl_list '}' maybe_attribute
1732 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1733 chainon ($1, $7)); }
1734 | union_head '{' component_decl_list '}' maybe_attribute
1735 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1736 nreverse ($3), chainon ($1, $5));
1737 }
1738 | enum_head identifier '{'
1739 { $$ = start_enum ($2); }
1740 enumlist maybecomma_warn '}' maybe_attribute
1741 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1742 chainon ($1, $8)); }
1743 | enum_head '{'
1744 { $$ = start_enum (NULL_TREE); }
1745 enumlist maybecomma_warn '}' maybe_attribute
1746 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1747 chainon ($1, $7)); }
1748 ;
1750 structsp_nonattr:
1751 struct_head identifier
1752 { $$ = xref_tag (RECORD_TYPE, $2); }
1753 | union_head identifier
1754 { $$ = xref_tag (UNION_TYPE, $2); }
1755 | enum_head identifier
1756 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1757 /* In ISO C, enumerated types can be referred to
1758 only if already defined. */
1759 if (pedantic && !COMPLETE_TYPE_P ($$))
1760 pedwarn ("ISO C forbids forward references to `enum' types"); }
1761 ;
1763 maybecomma:
1764 /* empty */
1765 | ','
1766 ;
1768 maybecomma_warn:
1769 /* empty */
1770 | ','
1771 { if (pedantic && ! flag_isoc99)
1772 pedwarn ("comma at end of enumerator list"); }
1773 ;
1775 /* We chain the components in reverse order. They are put in forward
1776 order in structsp_attr.
1778 Note that component_declarator returns single decls, so components
1779 and components_notype can use TREE_CHAIN directly, wheras components
1780 and components_notype return lists (of comma separated decls), so
1781 component_decl_list and component_decl_list2 must use chainon.
1783 The theory behind all this is that there will be more semicolon
1784 separated fields than comma separated fields, and so we'll be
1785 minimizing the number of node traversals required by chainon. */
1787 component_decl_list:
1788 component_decl_list2
1789 { $$ = $1; }
1790 | component_decl_list2 component_decl
1791 { $$ = chainon ($2, $1);
1792 pedwarn ("no semicolon at end of struct or union"); }
1793 ;
1795 component_decl_list2: /* empty */
1796 { $$ = NULL_TREE; }
1797 | component_decl_list2 component_decl ';'
1798 { $$ = chainon ($2, $1); }
1799 | component_decl_list2 ';'
1800 { if (pedantic)
1801 pedwarn ("extra semicolon in struct or union specified"); }
1802 ifobjc
1803 /* foo(sizeof(struct{ @defs(ClassName)})); */
1804 | DEFS '(' CLASSNAME ')'
1805 {
1806 tree interface = lookup_interface ($3);
1808 if (interface)
1809 $$ = nreverse (get_class_ivars (interface));
1810 else
1811 {
1812 error ("cannot find interface declaration for `%s'",
1813 IDENTIFIER_POINTER ($3));
1814 $$ = NULL_TREE;
1815 }
1816 }
1817 end ifobjc
1818 ;
1820 component_decl:
1821 declspecs_nosc_ts setspecs components
1822 { $$ = $3;
1823 POP_DECLSPEC_STACK; }
1824 | declspecs_nosc_ts setspecs
1825 {
1826 /* Support for unnamed structs or unions as members of
1827 structs or unions (which is [a] useful and [b] supports
1828 MS P-SDK). */
1829 if (pedantic)
1830 pedwarn ("ISO C doesn't support unnamed structs/unions");
1832 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1833 POP_DECLSPEC_STACK; }
1834 | declspecs_nosc_nots setspecs components_notype
1835 { $$ = $3;
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots
1838 { if (pedantic)
1839 pedwarn ("ISO C forbids member declarations with no members");
1840 shadow_tag_warned ($1, pedantic);
1841 $$ = NULL_TREE; }
1842 | error
1843 { $$ = NULL_TREE; }
1844 | extension component_decl
1845 { $$ = $2;
1846 RESTORE_EXT_FLAGS ($1); }
1847 ;
1849 components:
1850 component_declarator
1851 | components ',' maybe_resetattrs component_declarator
1852 { TREE_CHAIN ($4) = $1; $$ = $4; }
1853 ;
1855 components_notype:
1856 component_notype_declarator
1857 | components_notype ',' maybe_resetattrs component_notype_declarator
1858 { TREE_CHAIN ($4) = $1; $$ = $4; }
1859 ;
1861 component_declarator:
1862 declarator maybe_attribute
1863 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1864 decl_attributes (&$$,
1865 chainon ($2, all_prefix_attributes), 0); }
1866 | declarator ':' expr_no_commas maybe_attribute
1867 { $$ = grokfield ($1, current_declspecs, $3);
1868 decl_attributes (&$$,
1869 chainon ($4, all_prefix_attributes), 0); }
1870 | ':' expr_no_commas maybe_attribute
1871 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1872 decl_attributes (&$$,
1873 chainon ($3, all_prefix_attributes), 0); }
1874 ;
1876 component_notype_declarator:
1877 notype_declarator maybe_attribute
1878 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1879 decl_attributes (&$$,
1880 chainon ($2, all_prefix_attributes), 0); }
1881 | notype_declarator ':' expr_no_commas maybe_attribute
1882 { $$ = grokfield ($1, current_declspecs, $3);
1883 decl_attributes (&$$,
1884 chainon ($4, all_prefix_attributes), 0); }
1885 | ':' expr_no_commas maybe_attribute
1886 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1887 decl_attributes (&$$,
1888 chainon ($3, all_prefix_attributes), 0); }
1889 ;
1891 /* We chain the enumerators in reverse order.
1892 They are put in forward order in structsp_attr. */
1894 enumlist:
1895 enumerator
1896 | enumlist ',' enumerator
1897 { if ($1 == error_mark_node)
1898 $$ = $1;
1899 else
1900 TREE_CHAIN ($3) = $1, $$ = $3; }
1901 | error
1902 { $$ = error_mark_node; }
1903 ;
1906 enumerator:
1907 identifier
1908 { $$ = build_enumerator ($1, NULL_TREE); }
1909 | identifier '=' expr_no_commas
1910 { $$ = build_enumerator ($1, $3); }
1911 ;
1913 typename:
1914 declspecs_nosc
1915 { pending_xref_error ();
1916 $<ttype>$ = $1; }
1917 absdcl
1918 { $$ = build_tree_list ($<ttype>2, $3); }
1919 ;
1921 absdcl: /* an absolute declarator */
1922 /* empty */
1923 { $$ = NULL_TREE; }
1924 | absdcl1
1925 ;
1927 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1928 /* empty */
1929 { $$ = build_tree_list (build_tree_list (current_declspecs,
1930 NULL_TREE),
1931 all_prefix_attributes); }
1932 | absdcl1
1933 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 $1),
1935 all_prefix_attributes); }
1936 | absdcl1_noea attributes
1937 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 $1),
1939 chainon ($2, all_prefix_attributes)); }
1940 ;
1942 absdcl1: /* a nonempty absolute declarator */
1943 absdcl1_ea
1944 | absdcl1_noea
1945 ;
1947 absdcl1_noea:
1948 direct_absdcl1
1949 | '*' maybe_type_quals_attrs absdcl1_noea
1950 { $$ = make_pointer_declarator ($2, $3); }
1951 ;
1953 absdcl1_ea:
1954 '*' maybe_type_quals_attrs
1955 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1956 | '*' maybe_type_quals_attrs absdcl1_ea
1957 { $$ = make_pointer_declarator ($2, $3); }
1958 ;
1960 direct_absdcl1:
1961 '(' maybe_attribute absdcl1 ')'
1962 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1963 | direct_absdcl1 '(' parmlist
1964 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1965 | direct_absdcl1 array_declarator
1966 { $$ = set_array_declarator_type ($2, $1, 1); }
1967 | '(' parmlist
1968 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1969 | array_declarator
1970 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1971 ;
1973 /* The [...] part of a declarator for an array type. */
1975 array_declarator:
1976 '[' maybe_type_quals_attrs expr ']'
1977 { $$ = build_array_declarator ($3, $2, 0, 0); }
1978 | '[' maybe_type_quals_attrs ']'
1979 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1980 | '[' maybe_type_quals_attrs '*' ']'
1981 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1982 | '[' STATIC maybe_type_quals_attrs expr ']'
1983 { $$ = build_array_declarator ($4, $3, 1, 0); }
1984 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1985 | '[' declspecs_nosc_nots STATIC expr ']'
1986 { $$ = build_array_declarator ($4, $2, 1, 0); }
1987 ;
1989 /* A nonempty series of declarations and statements (possibly followed by
1990 some labels) that can form the body of a compound statement.
1991 NOTE: we don't allow labels on declarations; this might seem like a
1992 natural extension, but there would be a conflict between attributes
1993 on the label and prefix attributes on the declaration. */
1995 stmts_and_decls:
1996 lineno_stmt_decl_or_labels_ending_stmt
1997 | lineno_stmt_decl_or_labels_ending_decl
1998 | lineno_stmt_decl_or_labels_ending_label
1999 {
2000 pedwarn ("deprecated use of label at end of compound statement");
2001 }
2002 | lineno_stmt_decl_or_labels_ending_error
2003 ;
2005 lineno_stmt_decl_or_labels_ending_stmt:
2006 lineno_stmt
2007 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2008 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2009 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2010 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2011 ;
2013 lineno_stmt_decl_or_labels_ending_decl:
2014 lineno_decl
2015 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2016 { if (pedantic && !flag_isoc99)
2017 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2018 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2019 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2020 ;
2022 lineno_stmt_decl_or_labels_ending_label:
2023 lineno_label
2024 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2025 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2026 | lineno_stmt_decl_or_labels_ending_label lineno_label
2027 | lineno_stmt_decl_or_labels_ending_error lineno_label
2028 ;
2030 lineno_stmt_decl_or_labels_ending_error:
2031 errstmt
2032 | lineno_stmt_decl_or_labels errstmt
2033 ;
2035 lineno_stmt_decl_or_labels:
2036 lineno_stmt_decl_or_labels_ending_stmt
2037 | lineno_stmt_decl_or_labels_ending_decl
2038 | lineno_stmt_decl_or_labels_ending_label
2039 | lineno_stmt_decl_or_labels_ending_error
2040 ;
2042 errstmt: error ';'
2043 ;
2045 pushlevel: /* empty */
2046 { pushlevel (0);
2047 clear_last_expr ();
2048 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2049 ifobjc
2050 if (objc_method_context)
2051 add_objc_decls ();
2052 end ifobjc
2053 }
2054 ;
2056 poplevel: /* empty */
2057 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2058 ;
2060 /* Start and end blocks created for the new scopes of C99. */
2061 c99_block_start: /* empty */
2062 { if (flag_isoc99)
2063 {
2064 $$ = c_begin_compound_stmt ();
2065 pushlevel (0);
2066 clear_last_expr ();
2067 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2068 ifobjc
2069 if (objc_method_context)
2070 add_objc_decls ();
2071 end ifobjc
2072 }
2073 else
2074 $$ = NULL_TREE;
2075 }
2076 ;
2078 /* Productions using c99_block_start and c99_block_end will need to do what's
2079 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2080 $1 is the value of c99_block_start and $2 of c99_block_end. */
2081 c99_block_end: /* empty */
2082 { if (flag_isoc99)
2083 {
2084 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2085 $$ = poplevel (KEEP_MAYBE, 0, 0);
2086 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2087 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2088 = $$;
2089 }
2090 else
2091 $$ = NULL_TREE; }
2092 ;
2094 /* Read zero or more forward-declarations for labels
2095 that nested functions can jump to. */
2096 maybe_label_decls:
2097 /* empty */
2098 | label_decls
2099 { if (pedantic)
2100 pedwarn ("ISO C forbids label declarations"); }
2101 ;
2103 label_decls:
2104 label_decl
2105 | label_decls label_decl
2106 ;
2108 label_decl:
2109 LABEL identifiers_or_typenames ';'
2110 { tree link;
2111 for (link = $2; link; link = TREE_CHAIN (link))
2112 {
2113 tree label = declare_label (TREE_VALUE (link));
2114 C_DECLARED_LABEL_FLAG (label) = 1;
2115 add_decl_stmt (label);
2116 }
2117 }
2118 ;
2120 /* This is the body of a function definition.
2121 It causes syntax errors to ignore to the next openbrace. */
2122 compstmt_or_error:
2123 compstmt
2124 {}
2125 | error compstmt
2126 ;
2128 compstmt_start: '{' { compstmt_count++;
2129 $$ = c_begin_compound_stmt (); }
2130 ;
2132 compstmt_nostart: '}'
2133 { $$ = convert (void_type_node, integer_zero_node); }
2134 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2135 { $$ = poplevel (KEEP_MAYBE, 1, 0);
2136 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2137 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2138 = $$; }
2139 ;
2141 compstmt_contents_nonempty:
2142 stmts_and_decls
2143 | error
2144 ;
2146 compstmt_primary_start:
2147 '(' '{'
2148 { if (current_function_decl == 0)
2149 {
2150 error ("braced-group within expression allowed only inside a function");
2151 YYERROR;
2152 }
2153 /* We must force a BLOCK for this level
2154 so that, if it is not expanded later,
2155 there is a way to turn off the entire subtree of blocks
2156 that are contained in it. */
2157 keep_next_level ();
2158 compstmt_count++;
2159 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2160 }
2161 ;
2163 compstmt: compstmt_start compstmt_nostart
2164 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2165 last_expr_type = NULL_TREE;
2166 $$ = $1; }
2167 ;
2169 /* Value is number of statements counted as of the closeparen. */
2170 simple_if:
2171 if_prefix c99_block_lineno_labeled_stmt
2172 { c_finish_then (); }
2173 /* Make sure c_expand_end_cond is run once
2174 for each call to c_expand_start_cond.
2175 Otherwise a crash is likely. */
2176 | if_prefix error
2177 ;
2179 if_prefix:
2180 /* We must build the IF_STMT node before parsing its
2181 condition so that STMT_LINENO refers to the line
2182 containing the "if", and not the line containing
2183 the close-parenthesis.
2185 c_begin_if_stmt returns the IF_STMT node, which
2186 we later pass to c_expand_start_cond to fill
2187 in the condition and other tidbits. */
2188 IF
2189 { $<ttype>$ = c_begin_if_stmt (); }
2190 '(' expr ')'
2191 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2192 compstmt_count,$<ttype>2);
2193 $<itype>$ = stmt_count;
2194 if_stmt_locus = $<location>-1; }
2195 ;
2197 /* This is a subroutine of stmt.
2198 It is used twice, once for valid DO statements
2199 and once for catching errors in parsing the end test. */
2200 do_stmt_start:
2201 DO
2202 { stmt_count++;
2203 compstmt_count++;
2204 $<ttype>$
2205 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2206 NULL_TREE));
2207 /* In the event that a parse error prevents
2208 parsing the complete do-statement, set the
2209 condition now. Otherwise, we can get crashes at
2210 RTL-generation time. */
2211 DO_COND ($<ttype>$) = error_mark_node; }
2212 c99_block_lineno_labeled_stmt WHILE
2213 { $$ = $<ttype>2;
2214 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2215 ;
2217 /* The forced readahead in here is because we might be at the end of a
2218 line, and the line and file won't be bumped until yylex absorbs the
2219 first token on the next line. */
2221 save_location:
2222 { if (yychar == YYEMPTY)
2223 yychar = YYLEX;
2224 $$ = input_location; }
2225 ;
2227 lineno_labeled_stmt:
2228 lineno_stmt
2229 | lineno_label lineno_labeled_stmt
2230 ;
2232 /* Like lineno_labeled_stmt, but a block in C99. */
2233 c99_block_lineno_labeled_stmt:
2234 c99_block_start lineno_labeled_stmt c99_block_end
2235 { if (flag_isoc99)
2236 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2237 ;
2239 lineno_stmt:
2240 save_location stmt
2241 { if ($2)
2242 {
2243 STMT_LINENO ($2) = $1.line;
2244 /* ??? We currently have no way of recording
2245 the filename for a statement. This probably
2246 matters little in practice at the moment,
2247 but I suspect that problems will occur when
2248 doing inlining at the tree level. */
2249 }
2250 }
2251 ;
2253 lineno_label:
2254 save_location label
2255 { if ($2)
2256 {
2257 STMT_LINENO ($2) = $1.line;
2258 }
2259 }
2260 ;
2262 select_or_iter_stmt:
2263 simple_if ELSE
2264 { c_expand_start_else ();
2265 $<itype>1 = stmt_count; }
2266 c99_block_lineno_labeled_stmt
2267 { c_finish_else ();
2268 c_expand_end_cond ();
2269 if (extra_warnings && stmt_count == $<itype>1)
2270 warning ("empty body in an else-statement"); }
2271 | simple_if %prec IF
2272 { c_expand_end_cond ();
2273 /* This warning is here instead of in simple_if, because we
2274 do not want a warning if an empty if is followed by an
2275 else statement. Increment stmt_count so we don't
2276 give a second error if this is a nested `if'. */
2277 if (extra_warnings && stmt_count++ == $<itype>1)
2278 warning ("%Hempty body in an if-statement",
2279 &if_stmt_locus); }
2280 /* Make sure c_expand_end_cond is run once
2281 for each call to c_expand_start_cond.
2282 Otherwise a crash is likely. */
2283 | simple_if ELSE error
2284 { c_expand_end_cond (); }
2285 /* We must build the WHILE_STMT node before parsing its
2286 condition so that STMT_LINENO refers to the line
2287 containing the "while", and not the line containing
2288 the close-parenthesis.
2290 c_begin_while_stmt returns the WHILE_STMT node, which
2291 we later pass to c_finish_while_stmt_cond to fill
2292 in the condition and other tidbits. */
2293 | WHILE
2294 { stmt_count++;
2295 $<ttype>$ = c_begin_while_stmt (); }
2296 '(' expr ')'
2297 { $4 = c_common_truthvalue_conversion ($4);
2298 c_finish_while_stmt_cond
2299 (c_common_truthvalue_conversion ($4), $<ttype>2);
2300 $<ttype>$ = add_stmt ($<ttype>2); }
2301 c99_block_lineno_labeled_stmt
2302 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2303 | do_stmt_start
2304 '(' expr ')' ';'
2305 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2306 | do_stmt_start error
2307 { }
2308 | FOR
2309 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2310 NULL_TREE, NULL_TREE);
2311 add_stmt ($<ttype>$); }
2312 '(' for_init_stmt
2313 { stmt_count++;
2314 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2315 xexpr ';'
2316 { if ($6)
2317 FOR_COND ($<ttype>2)
2318 = c_common_truthvalue_conversion ($6); }
2319 xexpr ')'
2320 { FOR_EXPR ($<ttype>2) = $9; }
2321 c99_block_lineno_labeled_stmt
2322 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2323 | SWITCH '(' expr ')'
2324 { stmt_count++;
2325 $<ttype>$ = c_start_case ($3); }
2326 c99_block_lineno_labeled_stmt
2327 { c_finish_case (); }
2328 ;
2330 for_init_stmt:
2331 xexpr ';'
2332 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2333 | decl
2334 { check_for_loop_decls (); }
2335 ;
2337 /* Parse a single real statement, not including any labels. */
2338 stmt:
2339 compstmt
2340 { stmt_count++; $$ = $1; }
2341 | expr ';'
2342 { stmt_count++;
2343 $$ = c_expand_expr_stmt ($1); }
2344 | c99_block_start select_or_iter_stmt c99_block_end
2345 { if (flag_isoc99)
2346 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2347 $$ = NULL_TREE; }
2348 | BREAK ';'
2349 { stmt_count++;
2350 $$ = add_stmt (build_break_stmt ()); }
2351 | CONTINUE ';'
2352 { stmt_count++;
2353 $$ = add_stmt (build_continue_stmt ()); }
2354 | RETURN ';'
2355 { stmt_count++;
2356 $$ = c_expand_return (NULL_TREE); }
2357 | RETURN expr ';'
2358 { stmt_count++;
2359 $$ = c_expand_return ($2); }
2360 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2361 { stmt_count++;
2362 $$ = simple_asm_stmt ($4); }
2363 /* This is the case with just output operands. */
2364 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2365 { stmt_count++;
2366 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2367 /* This is the case with input operands as well. */
2368 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2369 asm_operands ')' ';'
2370 { stmt_count++;
2371 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2372 /* This is the case with clobbered registers as well. */
2373 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2374 asm_operands ':' asm_clobbers ')' ';'
2375 { stmt_count++;
2376 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2377 | GOTO identifier ';'
2378 { tree decl;
2379 stmt_count++;
2380 decl = lookup_label ($2);
2381 if (decl != 0)
2382 {
2383 TREE_USED (decl) = 1;
2384 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2385 }
2386 else
2387 $$ = NULL_TREE;
2388 }
2389 | GOTO '*' expr ';'
2390 { if (pedantic)
2391 pedwarn ("ISO C forbids `goto *expr;'");
2392 stmt_count++;
2393 $3 = convert (ptr_type_node, $3);
2394 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2395 | ';'
2396 { $$ = NULL_TREE; }
2397 ;
2399 /* Any kind of label, including jump labels and case labels.
2400 ANSI C accepts labels only before statements, but we allow them
2401 also at the end of a compound statement. */
2403 label: CASE expr_no_commas ':'
2404 { stmt_count++;
2405 $$ = do_case ($2, NULL_TREE); }
2406 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2407 { stmt_count++;
2408 $$ = do_case ($2, $4); }
2409 | DEFAULT ':'
2410 { stmt_count++;
2411 $$ = do_case (NULL_TREE, NULL_TREE); }
2412 | identifier save_location ':' maybe_attribute
2413 { tree label = define_label ($2, $1);
2414 stmt_count++;
2415 if (label)
2416 {
2417 decl_attributes (&label, $4, 0);
2418 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2419 }
2420 else
2421 $$ = NULL_TREE;
2422 }
2423 ;
2425 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2427 maybe_type_qual:
2428 /* empty */
2429 { emit_line_note (input_location);
2430 $$ = NULL_TREE; }
2431 | TYPE_QUAL
2432 { emit_line_note (input_location); }
2433 ;
2435 xexpr:
2436 /* empty */
2437 { $$ = NULL_TREE; }
2438 | expr
2439 ;
2441 /* These are the operands other than the first string and colon
2442 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2443 asm_operands: /* empty */
2444 { $$ = NULL_TREE; }
2445 | nonnull_asm_operands
2446 ;
2448 nonnull_asm_operands:
2449 asm_operand
2450 | nonnull_asm_operands ',' asm_operand
2451 { $$ = chainon ($1, $3); }
2452 ;
2454 asm_operand:
2455 STRING '(' expr ')'
2456 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2457 | '[' identifier ']' STRING '(' expr ')'
2458 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2459 IDENTIFIER_POINTER ($2));
2460 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2461 ;
2463 asm_clobbers:
2464 STRING
2465 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2466 | asm_clobbers ',' STRING
2467 { $$ = tree_cons (NULL_TREE, $3, $1); }
2468 ;
2469 \f
2470 /* This is what appears inside the parens in a function declarator.
2471 Its value is a list of ..._TYPE nodes. Attributes must appear here
2472 to avoid a conflict with their appearance after an open parenthesis
2473 in an abstract declarator, as in
2474 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2475 parmlist:
2476 maybe_attribute
2477 { pushlevel (0);
2478 clear_parm_order ();
2479 declare_parm_level (); }
2480 parmlist_1
2481 { $$ = $3;
2482 parmlist_tags_warning ();
2483 poplevel (0, 0, 0); }
2484 ;
2486 parmlist_1:
2487 parmlist_2 ')'
2488 | parms ';'
2489 { tree parm;
2490 if (pedantic)
2491 pedwarn ("ISO C forbids forward parameter declarations");
2492 /* Mark the forward decls as such. */
2493 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2494 TREE_ASM_WRITTEN (parm) = 1;
2495 clear_parm_order (); }
2496 maybe_attribute
2497 { /* Dummy action so attributes are in known place
2498 on parser stack. */ }
2499 parmlist_1
2500 { $$ = $6; }
2501 | error ')'
2502 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2503 ;
2505 /* This is what appears inside the parens in a function declarator.
2506 Is value is represented in the format that grokdeclarator expects. */
2507 parmlist_2: /* empty */
2508 { $$ = get_parm_info (0); }
2509 | ELLIPSIS
2510 { $$ = get_parm_info (0);
2511 /* Gcc used to allow this as an extension. However, it does
2512 not work for all targets, and thus has been disabled.
2513 Also, since func (...) and func () are indistinguishable,
2514 it caused problems with the code in expand_builtin which
2515 tries to verify that BUILT_IN_NEXT_ARG is being used
2516 correctly. */
2517 error ("ISO C requires a named argument before `...'");
2518 }
2519 | parms
2520 { $$ = get_parm_info (1);
2521 parsing_iso_function_signature = true;
2522 }
2523 | parms ',' ELLIPSIS
2524 { $$ = get_parm_info (0); }
2525 ;
2527 parms:
2528 firstparm
2529 { push_parm_decl ($1); }
2530 | parms ',' parm
2531 { push_parm_decl ($3); }
2532 ;
2534 /* A single parameter declaration or parameter type name,
2535 as found in a parmlist. */
2536 parm:
2537 declspecs_ts setspecs parm_declarator maybe_attribute
2538 { $$ = build_tree_list (build_tree_list (current_declspecs,
2539 $3),
2540 chainon ($4, all_prefix_attributes));
2541 POP_DECLSPEC_STACK; }
2542 | declspecs_ts setspecs notype_declarator maybe_attribute
2543 { $$ = build_tree_list (build_tree_list (current_declspecs,
2544 $3),
2545 chainon ($4, all_prefix_attributes));
2546 POP_DECLSPEC_STACK; }
2547 | declspecs_ts setspecs absdcl_maybe_attribute
2548 { $$ = $3;
2549 POP_DECLSPEC_STACK; }
2550 | declspecs_nots setspecs notype_declarator maybe_attribute
2551 { $$ = build_tree_list (build_tree_list (current_declspecs,
2552 $3),
2553 chainon ($4, all_prefix_attributes));
2554 POP_DECLSPEC_STACK; }
2556 | declspecs_nots setspecs absdcl_maybe_attribute
2557 { $$ = $3;
2558 POP_DECLSPEC_STACK; }
2559 ;
2561 /* The first parm, which must suck attributes from off the top of the parser
2562 stack. */
2563 firstparm:
2564 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2565 { $$ = build_tree_list (build_tree_list (current_declspecs,
2566 $3),
2567 chainon ($4, all_prefix_attributes));
2568 POP_DECLSPEC_STACK; }
2569 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2570 { $$ = build_tree_list (build_tree_list (current_declspecs,
2571 $3),
2572 chainon ($4, all_prefix_attributes));
2573 POP_DECLSPEC_STACK; }
2574 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2575 { $$ = $3;
2576 POP_DECLSPEC_STACK; }
2577 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2578 { $$ = build_tree_list (build_tree_list (current_declspecs,
2579 $3),
2580 chainon ($4, all_prefix_attributes));
2581 POP_DECLSPEC_STACK; }
2583 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2584 { $$ = $3;
2585 POP_DECLSPEC_STACK; }
2586 ;
2588 setspecs_fp:
2589 setspecs
2590 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2591 all_prefix_attributes = prefix_attributes; }
2592 ;
2594 /* This is used in a function definition
2595 where either a parmlist or an identifier list is ok.
2596 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2597 parmlist_or_identifiers:
2598 maybe_attribute
2599 { pushlevel (0);
2600 clear_parm_order ();
2601 declare_parm_level (); }
2602 parmlist_or_identifiers_1
2603 { $$ = $3;
2604 parmlist_tags_warning ();
2605 poplevel (0, 0, 0); }
2606 ;
2608 parmlist_or_identifiers_1:
2609 parmlist_1
2610 | identifiers ')'
2611 { tree t;
2612 for (t = $1; t; t = TREE_CHAIN (t))
2613 if (TREE_VALUE (t) == NULL_TREE)
2614 error ("`...' in old-style identifier list");
2615 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2617 /* Make sure we have a parmlist after attributes. */
2618 if ($<ttype>-1 != 0
2619 && (TREE_CODE ($$) != TREE_LIST
2620 || TREE_PURPOSE ($$) == 0
2621 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2622 YYERROR1;
2623 }
2624 ;
2626 /* A nonempty list of identifiers. */
2627 identifiers:
2628 IDENTIFIER
2629 { $$ = build_tree_list (NULL_TREE, $1); }
2630 | identifiers ',' IDENTIFIER
2631 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2632 ;
2634 /* A nonempty list of identifiers, including typenames. */
2635 identifiers_or_typenames:
2636 identifier
2637 { $$ = build_tree_list (NULL_TREE, $1); }
2638 | identifiers_or_typenames ',' identifier
2639 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2640 ;
2642 extension:
2643 EXTENSION
2644 { $$ = SAVE_EXT_FLAGS();
2645 pedantic = 0;
2646 warn_pointer_arith = 0;
2647 warn_traditional = 0;
2648 flag_iso = 0; }
2649 ;
2650 \f
2651 ifobjc
2652 /* Objective-C productions. */
2654 objcdef:
2655 classdef
2656 | classdecl
2657 | aliasdecl
2658 | protocoldef
2659 | methoddef
2660 | END
2661 {
2662 if (objc_implementation_context)
2663 {
2664 finish_class (objc_implementation_context);
2665 objc_ivar_chain = NULL_TREE;
2666 objc_implementation_context = NULL_TREE;
2667 }
2668 else
2669 warning ("`@end' must appear in an implementation context");
2670 }
2671 ;
2673 /* A nonempty list of identifiers. */
2674 identifier_list:
2675 identifier
2676 { $$ = build_tree_list (NULL_TREE, $1); }
2677 | identifier_list ',' identifier
2678 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2679 ;
2681 classdecl:
2682 CLASS identifier_list ';'
2683 {
2684 objc_declare_class ($2);
2685 }
2686 ;
2688 aliasdecl:
2689 ALIAS identifier identifier ';'
2690 {
2691 objc_declare_alias ($2, $3);
2692 }
2693 ;
2695 classdef:
2696 INTERFACE identifier protocolrefs '{'
2697 {
2698 objc_interface_context = objc_ivar_context
2699 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2700 objc_public_flag = 0;
2701 }
2702 ivar_decl_list '}'
2703 {
2704 continue_class (objc_interface_context);
2705 }
2706 methodprotolist
2707 END
2708 {
2709 finish_class (objc_interface_context);
2710 objc_interface_context = NULL_TREE;
2711 }
2713 | INTERFACE identifier protocolrefs
2714 {
2715 objc_interface_context
2716 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2717 continue_class (objc_interface_context);
2718 }
2719 methodprotolist
2720 END
2721 {
2722 finish_class (objc_interface_context);
2723 objc_interface_context = NULL_TREE;
2724 }
2726 | INTERFACE identifier ':' identifier protocolrefs '{'
2727 {
2728 objc_interface_context = objc_ivar_context
2729 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2730 objc_public_flag = 0;
2731 }
2732 ivar_decl_list '}'
2733 {
2734 continue_class (objc_interface_context);
2735 }
2736 methodprotolist
2737 END
2738 {
2739 finish_class (objc_interface_context);
2740 objc_interface_context = NULL_TREE;
2741 }
2743 | INTERFACE identifier ':' identifier protocolrefs
2744 {
2745 objc_interface_context
2746 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2747 continue_class (objc_interface_context);
2748 }
2749 methodprotolist
2750 END
2751 {
2752 finish_class (objc_interface_context);
2753 objc_interface_context = NULL_TREE;
2754 }
2756 | IMPLEMENTATION identifier '{'
2757 {
2758 objc_implementation_context = objc_ivar_context
2759 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2760 objc_public_flag = 0;
2761 }
2762 ivar_decl_list '}'
2763 {
2764 objc_ivar_chain
2765 = continue_class (objc_implementation_context);
2766 }
2768 | IMPLEMENTATION identifier
2769 {
2770 objc_implementation_context
2771 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2772 objc_ivar_chain
2773 = continue_class (objc_implementation_context);
2774 }
2776 | IMPLEMENTATION identifier ':' identifier '{'
2777 {
2778 objc_implementation_context = objc_ivar_context
2779 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2780 objc_public_flag = 0;
2781 }
2782 ivar_decl_list '}'
2783 {
2784 objc_ivar_chain
2785 = continue_class (objc_implementation_context);
2786 }
2788 | IMPLEMENTATION identifier ':' identifier
2789 {
2790 objc_implementation_context
2791 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2792 objc_ivar_chain
2793 = continue_class (objc_implementation_context);
2794 }
2796 | INTERFACE identifier '(' identifier ')' protocolrefs
2797 {
2798 objc_interface_context
2799 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2800 continue_class (objc_interface_context);
2801 }
2802 methodprotolist
2803 END
2804 {
2805 finish_class (objc_interface_context);
2806 objc_interface_context = NULL_TREE;
2807 }
2809 | IMPLEMENTATION identifier '(' identifier ')'
2810 {
2811 objc_implementation_context
2812 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2813 objc_ivar_chain
2814 = continue_class (objc_implementation_context);
2815 }
2816 ;
2818 protocoldef:
2819 PROTOCOL identifier protocolrefs
2820 {
2821 objc_pq_context = 1;
2822 objc_interface_context
2823 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2824 }
2825 methodprotolist END
2826 {
2827 objc_pq_context = 0;
2828 finish_protocol(objc_interface_context);
2829 objc_interface_context = NULL_TREE;
2830 }
2831 /* The @protocol forward-declaration production introduces a
2832 reduce/reduce conflict on ';', which should be resolved in
2833 favor of the production 'identifier_list -> identifier'. */
2834 | PROTOCOL identifier_list ';'
2835 {
2836 objc_declare_protocols ($2);
2837 }
2838 ;
2840 protocolrefs:
2841 /* empty */
2842 {
2843 $$ = NULL_TREE;
2844 }
2845 | non_empty_protocolrefs
2846 ;
2848 non_empty_protocolrefs:
2849 ARITHCOMPARE identifier_list ARITHCOMPARE
2850 {
2851 if ($1 == LT_EXPR && $3 == GT_EXPR)
2852 $$ = $2;
2853 else
2854 YYERROR1;
2855 }
2856 ;
2858 ivar_decl_list:
2859 ivar_decl_list visibility_spec ivar_decls
2860 | ivar_decls
2861 ;
2863 visibility_spec:
2864 PRIVATE { objc_public_flag = 2; }
2865 | PROTECTED { objc_public_flag = 0; }
2866 | PUBLIC { objc_public_flag = 1; }
2867 ;
2869 ivar_decls:
2870 /* empty */
2871 {
2872 $$ = NULL_TREE;
2873 }
2874 | ivar_decls ivar_decl ';'
2875 | ivar_decls ';'
2876 {
2877 if (pedantic)
2878 pedwarn ("extra semicolon in struct or union specified");
2879 }
2880 ;
2883 /* There is a shift-reduce conflict here, because `components' may
2884 start with a `typename'. It happens that shifting (the default resolution)
2885 does the right thing, because it treats the `typename' as part of
2886 a `typed_typespecs'.
2888 It is possible that this same technique would allow the distinction
2889 between `notype_initdecls' and `initdecls' to be eliminated.
2890 But I am being cautious and not trying it. */
2892 ivar_decl:
2893 declspecs_nosc_ts setspecs ivars
2894 { $$ = $3;
2895 POP_DECLSPEC_STACK; }
2896 | declspecs_nosc_nots setspecs ivars
2897 { $$ = $3;
2898 POP_DECLSPEC_STACK; }
2899 | error
2900 { $$ = NULL_TREE; }
2901 ;
2903 ivars:
2904 /* empty */
2905 { $$ = NULL_TREE; }
2906 | ivar_declarator
2907 | ivars ',' maybe_resetattrs ivar_declarator
2908 ;
2910 ivar_declarator:
2911 declarator
2912 {
2913 $$ = add_instance_variable (objc_ivar_context,
2914 objc_public_flag,
2915 $1, current_declspecs,
2916 NULL_TREE);
2917 }
2918 | declarator ':' expr_no_commas
2919 {
2920 $$ = add_instance_variable (objc_ivar_context,
2921 objc_public_flag,
2922 $1, current_declspecs, $3);
2923 }
2924 | ':' expr_no_commas
2925 {
2926 $$ = add_instance_variable (objc_ivar_context,
2927 objc_public_flag,
2928 NULL_TREE,
2929 current_declspecs, $2);
2930 }
2931 ;
2933 methodtype:
2934 '+'
2935 { objc_inherit_code = CLASS_METHOD_DECL; }
2936 | '-'
2937 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2938 ;
2940 methoddef:
2941 methodtype
2942 {
2943 objc_pq_context = 1;
2944 if (!objc_implementation_context)
2945 fatal_error ("method definition not in class context");
2946 }
2947 methoddecl
2948 {
2949 objc_pq_context = 0;
2950 if (objc_inherit_code == CLASS_METHOD_DECL)
2951 add_class_method (objc_implementation_context, $3);
2952 else
2953 add_instance_method (objc_implementation_context, $3);
2954 start_method_def ($3);
2955 }
2956 optarglist
2957 {
2958 continue_method_def ();
2959 }
2960 compstmt_or_error
2961 {
2962 finish_method_def ();
2963 }
2964 ;
2966 /* the reason for the strange actions in this rule
2967 is so that notype_initdecls when reached via datadef
2968 can find a valid list of type and sc specs in $0. */
2970 methodprotolist:
2971 /* empty */
2972 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2973 ;
2975 methodprotolist2: /* eliminates a shift/reduce conflict */
2976 methodproto
2977 | datadef
2978 | methodprotolist2 methodproto
2979 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2980 ;
2982 semi_or_error:
2983 ';'
2984 | error
2985 ;
2987 methodproto:
2988 methodtype
2989 {
2990 /* Remember protocol qualifiers in prototypes. */
2991 objc_pq_context = 1;
2992 }
2993 methoddecl
2994 {
2995 /* Forget protocol qualifiers here. */
2996 objc_pq_context = 0;
2997 if (objc_inherit_code == CLASS_METHOD_DECL)
2998 add_class_method (objc_interface_context, $3);
2999 else
3000 add_instance_method (objc_interface_context, $3);
3001 }
3002 semi_or_error
3003 ;
3005 methoddecl:
3006 '(' typename ')' unaryselector
3007 {
3008 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3009 }
3011 | unaryselector
3012 {
3013 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3014 }
3016 | '(' typename ')' keywordselector optparmlist
3017 {
3018 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3019 }
3021 | keywordselector optparmlist
3022 {
3023 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3024 }
3025 ;
3027 /* "optarglist" assumes that start_method_def has already been called...
3028 if it is not, the "xdecls" will not be placed in the proper scope */
3030 optarglist:
3031 /* empty */
3032 | ';' myxdecls
3033 ;
3035 /* to get around the following situation: "int foo (int a) int b; {}" that
3036 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3038 myxdecls:
3039 /* empty */
3040 | mydecls
3041 ;
3043 mydecls:
3044 mydecl
3045 | errstmt
3046 | mydecls mydecl
3047 | mydecl errstmt
3048 ;
3050 mydecl:
3051 declspecs_ts setspecs myparms ';'
3052 { POP_DECLSPEC_STACK; }
3053 | declspecs_ts ';'
3054 { shadow_tag ($1); }
3055 | declspecs_nots ';'
3056 { pedwarn ("empty declaration"); }
3057 ;
3059 myparms:
3060 myparm
3061 { push_parm_decl ($1); }
3062 | myparms ',' myparm
3063 { push_parm_decl ($3); }
3064 ;
3066 /* A single parameter declaration or parameter type name,
3067 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3069 myparm:
3070 parm_declarator maybe_attribute
3071 { $$ = build_tree_list (build_tree_list (current_declspecs,
3072 $1),
3073 chainon ($2, all_prefix_attributes)); }
3074 | notype_declarator maybe_attribute
3075 { $$ = build_tree_list (build_tree_list (current_declspecs,
3076 $1),
3077 chainon ($2, all_prefix_attributes)); }
3078 | absdcl_maybe_attribute
3079 { $$ = $1; }
3080 ;
3082 optparmlist:
3083 /* empty */
3084 {
3085 $$ = NULL_TREE;
3086 }
3087 | ',' ELLIPSIS
3088 {
3089 /* oh what a kludge! */
3090 $$ = objc_ellipsis_node;
3091 }
3092 | ','
3093 {
3094 pushlevel (0);
3095 }
3096 parmlist_2
3097 {
3098 /* returns a tree list node generated by get_parm_info */
3099 $$ = $3;
3100 poplevel (0, 0, 0);
3101 }
3102 ;
3104 unaryselector:
3105 selector
3106 ;
3108 keywordselector:
3109 keyworddecl
3111 | keywordselector keyworddecl
3112 {
3113 $$ = chainon ($1, $2);
3114 }
3115 ;
3117 selector:
3118 IDENTIFIER
3119 | TYPENAME
3120 | CLASSNAME
3121 | OBJECTNAME
3122 | reservedwords
3123 ;
3125 reservedwords:
3126 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3127 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3128 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3129 | TYPESPEC | TYPE_QUAL
3130 ;
3132 keyworddecl:
3133 selector ':' '(' typename ')' identifier
3134 {
3135 $$ = build_keyword_decl ($1, $4, $6);
3136 }
3138 | selector ':' identifier
3139 {
3140 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3141 }
3143 | ':' '(' typename ')' identifier
3144 {
3145 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3146 }
3148 | ':' identifier
3149 {
3150 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3151 }
3152 ;
3154 messageargs:
3155 selector
3156 | keywordarglist
3157 ;
3159 keywordarglist:
3160 keywordarg
3161 | keywordarglist keywordarg
3162 {
3163 $$ = chainon ($1, $2);
3164 }
3165 ;
3168 keywordexpr:
3169 nonnull_exprlist
3170 {
3171 if (TREE_CHAIN ($1) == NULL_TREE)
3172 /* just return the expr., remove a level of indirection */
3173 $$ = TREE_VALUE ($1);
3174 else
3175 /* we have a comma expr., we will collapse later */
3176 $$ = $1;
3177 }
3178 ;
3180 keywordarg:
3181 selector ':' keywordexpr
3182 {
3183 $$ = build_tree_list ($1, $3);
3184 }
3185 | ':' keywordexpr
3186 {
3187 $$ = build_tree_list (NULL_TREE, $2);
3188 }
3189 ;
3191 receiver:
3192 expr
3193 | CLASSNAME
3194 {
3195 $$ = get_class_reference ($1);
3196 }
3197 ;
3199 objcmessageexpr:
3200 '[' receiver messageargs ']'
3201 { $$ = build_tree_list ($2, $3); }
3202 ;
3204 selectorarg:
3205 selector
3206 | keywordnamelist
3207 ;
3209 keywordnamelist:
3210 keywordname
3211 | keywordnamelist keywordname
3212 {
3213 $$ = chainon ($1, $2);
3214 }
3215 ;
3217 keywordname:
3218 selector ':'
3219 {
3220 $$ = build_tree_list ($1, NULL_TREE);
3221 }
3222 | ':'
3223 {
3224 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3225 }
3226 ;
3228 objcselectorexpr:
3229 SELECTOR '(' selectorarg ')'
3230 {
3231 $$ = $3;
3232 }
3233 ;
3235 objcprotocolexpr:
3236 PROTOCOL '(' identifier ')'
3237 {
3238 $$ = $3;
3239 }
3240 ;
3242 /* extension to support C-structures in the archiver */
3244 objcencodeexpr:
3245 ENCODE '(' typename ')'
3246 {
3247 $$ = groktypename ($3);
3248 }
3249 ;
3251 end ifobjc
3252 %%
3254 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3255 cpplib.h's token codes into yacc's token codes. */
3257 static enum cpp_ttype last_token;
3259 /* The reserved keyword table. */
3260 struct resword
3261 {
3262 const char *word;
3263 ENUM_BITFIELD(rid) rid : 16;
3264 unsigned int disable : 16;
3265 };
3267 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3268 _true_. */
3269 #define D_C89 0x01 /* not in C89 */
3270 #define D_EXT 0x02 /* GCC extension */
3271 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3272 #define D_OBJC 0x08 /* Objective C only */
3274 static const struct resword reswords[] =
3275 {
3276 { "_Bool", RID_BOOL, 0 },
3277 { "_Complex", RID_COMPLEX, 0 },
3278 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3279 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3280 { "__alignof", RID_ALIGNOF, 0 },
3281 { "__alignof__", RID_ALIGNOF, 0 },
3282 { "__asm", RID_ASM, 0 },
3283 { "__asm__", RID_ASM, 0 },
3284 { "__attribute", RID_ATTRIBUTE, 0 },
3285 { "__attribute__", RID_ATTRIBUTE, 0 },
3286 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3287 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3288 { "__builtin_va_arg", RID_VA_ARG, 0 },
3289 { "__complex", RID_COMPLEX, 0 },
3290 { "__complex__", RID_COMPLEX, 0 },
3291 { "__const", RID_CONST, 0 },
3292 { "__const__", RID_CONST, 0 },
3293 { "__extension__", RID_EXTENSION, 0 },
3294 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3295 { "__imag", RID_IMAGPART, 0 },
3296 { "__imag__", RID_IMAGPART, 0 },
3297 { "__inline", RID_INLINE, 0 },
3298 { "__inline__", RID_INLINE, 0 },
3299 { "__label__", RID_LABEL, 0 },
3300 { "__ptrbase", RID_PTRBASE, 0 },
3301 { "__ptrbase__", RID_PTRBASE, 0 },
3302 { "__ptrextent", RID_PTREXTENT, 0 },
3303 { "__ptrextent__", RID_PTREXTENT, 0 },
3304 { "__ptrvalue", RID_PTRVALUE, 0 },
3305 { "__ptrvalue__", RID_PTRVALUE, 0 },
3306 { "__real", RID_REALPART, 0 },
3307 { "__real__", RID_REALPART, 0 },
3308 { "__restrict", RID_RESTRICT, 0 },
3309 { "__restrict__", RID_RESTRICT, 0 },
3310 { "__signed", RID_SIGNED, 0 },
3311 { "__signed__", RID_SIGNED, 0 },
3312 { "__thread", RID_THREAD, 0 },
3313 { "__typeof", RID_TYPEOF, 0 },
3314 { "__typeof__", RID_TYPEOF, 0 },
3315 { "__volatile", RID_VOLATILE, 0 },
3316 { "__volatile__", RID_VOLATILE, 0 },
3317 { "asm", RID_ASM, D_EXT },
3318 { "auto", RID_AUTO, 0 },
3319 { "break", RID_BREAK, 0 },
3320 { "case", RID_CASE, 0 },
3321 { "char", RID_CHAR, 0 },
3322 { "const", RID_CONST, 0 },
3323 { "continue", RID_CONTINUE, 0 },
3324 { "default", RID_DEFAULT, 0 },
3325 { "do", RID_DO, 0 },
3326 { "double", RID_DOUBLE, 0 },
3327 { "else", RID_ELSE, 0 },
3328 { "enum", RID_ENUM, 0 },
3329 { "extern", RID_EXTERN, 0 },
3330 { "float", RID_FLOAT, 0 },
3331 { "for", RID_FOR, 0 },
3332 { "goto", RID_GOTO, 0 },
3333 { "if", RID_IF, 0 },
3334 { "inline", RID_INLINE, D_EXT89 },
3335 { "int", RID_INT, 0 },
3336 { "long", RID_LONG, 0 },
3337 { "register", RID_REGISTER, 0 },
3338 { "restrict", RID_RESTRICT, D_C89 },
3339 { "return", RID_RETURN, 0 },
3340 { "short", RID_SHORT, 0 },
3341 { "signed", RID_SIGNED, 0 },
3342 { "sizeof", RID_SIZEOF, 0 },
3343 { "static", RID_STATIC, 0 },
3344 { "struct", RID_STRUCT, 0 },
3345 { "switch", RID_SWITCH, 0 },
3346 { "typedef", RID_TYPEDEF, 0 },
3347 { "typeof", RID_TYPEOF, D_EXT },
3348 { "union", RID_UNION, 0 },
3349 { "unsigned", RID_UNSIGNED, 0 },
3350 { "void", RID_VOID, 0 },
3351 { "volatile", RID_VOLATILE, 0 },
3352 { "while", RID_WHILE, 0 },
3353 ifobjc
3354 { "id", RID_ID, D_OBJC },
3356 /* These objc keywords are recognized only immediately after
3357 an '@'. */
3358 { "class", RID_AT_CLASS, D_OBJC },
3359 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3360 { "defs", RID_AT_DEFS, D_OBJC },
3361 { "encode", RID_AT_ENCODE, D_OBJC },
3362 { "end", RID_AT_END, D_OBJC },
3363 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3364 { "interface", RID_AT_INTERFACE, D_OBJC },
3365 { "private", RID_AT_PRIVATE, D_OBJC },
3366 { "protected", RID_AT_PROTECTED, D_OBJC },
3367 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3368 { "public", RID_AT_PUBLIC, D_OBJC },
3369 { "selector", RID_AT_SELECTOR, D_OBJC },
3371 /* These are recognized only in protocol-qualifier context
3372 (see above) */
3373 { "bycopy", RID_BYCOPY, D_OBJC },
3374 { "byref", RID_BYREF, D_OBJC },
3375 { "in", RID_IN, D_OBJC },
3376 { "inout", RID_INOUT, D_OBJC },
3377 { "oneway", RID_ONEWAY, D_OBJC },
3378 { "out", RID_OUT, D_OBJC },
3379 end ifobjc
3380 };
3381 #define N_reswords (sizeof reswords / sizeof (struct resword))
3383 /* Table mapping from RID_* constants to yacc token numbers.
3384 Unfortunately we have to have entries for all the keywords in all
3385 three languages. */
3386 static const short rid_to_yy[RID_MAX] =
3387 {
3388 /* RID_STATIC */ STATIC,
3389 /* RID_UNSIGNED */ TYPESPEC,
3390 /* RID_LONG */ TYPESPEC,
3391 /* RID_CONST */ TYPE_QUAL,
3392 /* RID_EXTERN */ SCSPEC,
3393 /* RID_REGISTER */ SCSPEC,
3394 /* RID_TYPEDEF */ SCSPEC,
3395 /* RID_SHORT */ TYPESPEC,
3396 /* RID_INLINE */ SCSPEC,
3397 /* RID_VOLATILE */ TYPE_QUAL,
3398 /* RID_SIGNED */ TYPESPEC,
3399 /* RID_AUTO */ SCSPEC,
3400 /* RID_RESTRICT */ TYPE_QUAL,
3402 /* C extensions */
3403 /* RID_COMPLEX */ TYPESPEC,
3404 /* RID_THREAD */ SCSPEC,
3406 /* C++ */
3407 /* RID_FRIEND */ 0,
3408 /* RID_VIRTUAL */ 0,
3409 /* RID_EXPLICIT */ 0,
3410 /* RID_EXPORT */ 0,
3411 /* RID_MUTABLE */ 0,
3413 /* ObjC */
3414 /* RID_IN */ TYPE_QUAL,
3415 /* RID_OUT */ TYPE_QUAL,
3416 /* RID_INOUT */ TYPE_QUAL,
3417 /* RID_BYCOPY */ TYPE_QUAL,
3418 /* RID_BYREF */ TYPE_QUAL,
3419 /* RID_ONEWAY */ TYPE_QUAL,
3421 /* C */
3422 /* RID_INT */ TYPESPEC,
3423 /* RID_CHAR */ TYPESPEC,
3424 /* RID_FLOAT */ TYPESPEC,
3425 /* RID_DOUBLE */ TYPESPEC,
3426 /* RID_VOID */ TYPESPEC,
3427 /* RID_ENUM */ ENUM,
3428 /* RID_STRUCT */ STRUCT,
3429 /* RID_UNION */ UNION,
3430 /* RID_IF */ IF,
3431 /* RID_ELSE */ ELSE,
3432 /* RID_WHILE */ WHILE,
3433 /* RID_DO */ DO,
3434 /* RID_FOR */ FOR,
3435 /* RID_SWITCH */ SWITCH,
3436 /* RID_CASE */ CASE,
3437 /* RID_DEFAULT */ DEFAULT,
3438 /* RID_BREAK */ BREAK,
3439 /* RID_CONTINUE */ CONTINUE,
3440 /* RID_RETURN */ RETURN,
3441 /* RID_GOTO */ GOTO,
3442 /* RID_SIZEOF */ SIZEOF,
3444 /* C extensions */
3445 /* RID_ASM */ ASM_KEYWORD,
3446 /* RID_TYPEOF */ TYPEOF,
3447 /* RID_ALIGNOF */ ALIGNOF,
3448 /* RID_ATTRIBUTE */ ATTRIBUTE,
3449 /* RID_VA_ARG */ VA_ARG,
3450 /* RID_EXTENSION */ EXTENSION,
3451 /* RID_IMAGPART */ IMAGPART,
3452 /* RID_REALPART */ REALPART,
3453 /* RID_LABEL */ LABEL,
3454 /* RID_PTRBASE */ PTR_BASE,
3455 /* RID_PTREXTENT */ PTR_EXTENT,
3456 /* RID_PTRVALUE */ PTR_VALUE,
3458 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3459 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3461 /* RID_FUNCTION_NAME */ FUNC_NAME,
3462 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3463 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3465 /* C++ */
3466 /* RID_BOOL */ TYPESPEC,
3467 /* RID_WCHAR */ 0,
3468 /* RID_CLASS */ 0,
3469 /* RID_PUBLIC */ 0,
3470 /* RID_PRIVATE */ 0,
3471 /* RID_PROTECTED */ 0,
3472 /* RID_TEMPLATE */ 0,
3473 /* RID_NULL */ 0,
3474 /* RID_CATCH */ 0,
3475 /* RID_DELETE */ 0,
3476 /* RID_FALSE */ 0,
3477 /* RID_NAMESPACE */ 0,
3478 /* RID_NEW */ 0,
3479 /* RID_OPERATOR */ 0,
3480 /* RID_THIS */ 0,
3481 /* RID_THROW */ 0,
3482 /* RID_TRUE */ 0,
3483 /* RID_TRY */ 0,
3484 /* RID_TYPENAME */ 0,
3485 /* RID_TYPEID */ 0,
3486 /* RID_USING */ 0,
3488 /* casts */
3489 /* RID_CONSTCAST */ 0,
3490 /* RID_DYNCAST */ 0,
3491 /* RID_REINTCAST */ 0,
3492 /* RID_STATCAST */ 0,
3494 /* Objective C */
3495 /* RID_ID */ OBJECTNAME,
3496 /* RID_AT_ENCODE */ ENCODE,
3497 /* RID_AT_END */ END,
3498 /* RID_AT_CLASS */ CLASS,
3499 /* RID_AT_ALIAS */ ALIAS,
3500 /* RID_AT_DEFS */ DEFS,
3501 /* RID_AT_PRIVATE */ PRIVATE,
3502 /* RID_AT_PROTECTED */ PROTECTED,
3503 /* RID_AT_PUBLIC */ PUBLIC,
3504 /* RID_AT_PROTOCOL */ PROTOCOL,
3505 /* RID_AT_SELECTOR */ SELECTOR,
3506 /* RID_AT_INTERFACE */ INTERFACE,
3507 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3508 };
3510 static void
3511 init_reswords (void)
3512 {
3513 unsigned int i;
3514 tree id;
3515 int mask = (flag_isoc99 ? 0 : D_C89)
3516 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3518 if (!c_dialect_objc ())
3519 mask |= D_OBJC;
3521 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3522 for (i = 0; i < N_reswords; i++)
3523 {
3524 /* If a keyword is disabled, do not enter it into the table
3525 and so create a canonical spelling that isn't a keyword. */
3526 if (reswords[i].disable & mask)
3527 continue;
3529 id = get_identifier (reswords[i].word);
3530 C_RID_CODE (id) = reswords[i].rid;
3531 C_IS_RESERVED_WORD (id) = 1;
3532 ridpointers [(int) reswords[i].rid] = id;
3533 }
3534 }
3536 #define NAME(type) cpp_type2name (type)
3538 static void
3539 yyerror (const char *msgid)
3540 {
3541 const char *string = _(msgid);
3543 if (last_token == CPP_EOF)
3544 error ("%s at end of input", string);
3545 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3546 {
3547 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3548 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3549 if (val <= UCHAR_MAX && ISGRAPH (val))
3550 error ("%s before %s'%c'", string, ell, val);
3551 else
3552 error ("%s before %s'\\x%x'", string, ell, val);
3553 }
3554 else if (last_token == CPP_STRING
3555 || last_token == CPP_WSTRING)
3556 error ("%s before string constant", string);
3557 else if (last_token == CPP_NUMBER)
3558 error ("%s before numeric constant", string);
3559 else if (last_token == CPP_NAME)
3560 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3561 else
3562 error ("%s before '%s' token", string, NAME(last_token));
3563 }
3565 static int
3566 yylexname (void)
3567 {
3568 tree decl;
3570 ifobjc
3571 int objc_force_identifier = objc_need_raw_identifier;
3572 OBJC_NEED_RAW_IDENTIFIER (0);
3573 end ifobjc
3575 if (C_IS_RESERVED_WORD (yylval.ttype))
3576 {
3577 enum rid rid_code = C_RID_CODE (yylval.ttype);
3579 ifobjc
3580 /* Turn non-typedefed refs to "id" into plain identifiers; this
3581 allows constructs like "void foo(id id);" to work. */
3582 if (rid_code == RID_ID)
3583 {
3584 decl = lookup_name (yylval.ttype);
3585 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3586 return IDENTIFIER;
3587 }
3589 if (!OBJC_IS_AT_KEYWORD (rid_code)
3590 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3591 end ifobjc
3592 {
3593 /* Return the canonical spelling for this keyword. */
3594 yylval.ttype = ridpointers[(int) rid_code];
3595 return rid_to_yy[(int) rid_code];
3596 }
3597 }
3599 decl = lookup_name (yylval.ttype);
3600 if (decl)
3601 {
3602 if (TREE_CODE (decl) == TYPE_DECL)
3603 return TYPENAME;
3604 }
3605 ifobjc
3606 else
3607 {
3608 tree objc_interface_decl = is_class_name (yylval.ttype);
3609 /* ObjC class names are in the same namespace as variables and
3610 typedefs, and hence are shadowed by local declarations. */
3611 if (objc_interface_decl
3612 && (global_bindings_p ()
3613 || (!objc_force_identifier && !decl)))
3614 {
3615 yylval.ttype = objc_interface_decl;
3616 return CLASSNAME;
3617 }
3618 }
3619 end ifobjc
3621 return IDENTIFIER;
3622 }
3624 static inline int
3625 _yylex (void)
3626 {
3627 get_next:
3628 last_token = c_lex (&yylval.ttype);
3629 switch (last_token)
3630 {
3631 case CPP_EQ: return '=';
3632 case CPP_NOT: return '!';
3633 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3634 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3635 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3636 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3637 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3638 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3639 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3640 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3641 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3642 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3643 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3644 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3646 case CPP_COMPL: return '~';
3647 case CPP_AND_AND: return ANDAND;
3648 case CPP_OR_OR: return OROR;
3649 case CPP_QUERY: return '?';
3650 case CPP_OPEN_PAREN: return '(';
3651 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3652 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3653 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3654 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3656 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3657 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3658 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3659 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3660 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3661 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3662 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3663 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3664 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3665 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3667 case CPP_OPEN_SQUARE: return '[';
3668 case CPP_CLOSE_SQUARE: return ']';
3669 case CPP_OPEN_BRACE: return '{';
3670 case CPP_CLOSE_BRACE: return '}';
3671 case CPP_ELLIPSIS: return ELLIPSIS;
3673 case CPP_PLUS_PLUS: return PLUSPLUS;
3674 case CPP_MINUS_MINUS: return MINUSMINUS;
3675 case CPP_DEREF: return POINTSAT;
3676 case CPP_DOT: return '.';
3678 /* The following tokens may affect the interpretation of any
3679 identifiers following, if doing Objective-C. */
3680 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3681 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3682 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3683 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3685 case CPP_EOF:
3686 return 0;
3688 case CPP_NAME:
3689 return yylexname ();
3691 case CPP_AT_NAME:
3692 /* This only happens in Objective-C; it must be a keyword. */
3693 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3695 case CPP_NUMBER:
3696 case CPP_CHAR:
3697 case CPP_WCHAR:
3698 return CONSTANT;
3700 case CPP_STRING:
3701 case CPP_WSTRING:
3702 return STRING;
3704 case CPP_OBJC_STRING:
3705 return OBJC_STRING;
3707 /* These tokens are C++ specific (and will not be generated
3708 in C mode, but let's be cautious). */
3709 case CPP_SCOPE:
3710 case CPP_DEREF_STAR:
3711 case CPP_DOT_STAR:
3712 case CPP_MIN_EQ:
3713 case CPP_MAX_EQ:
3714 case CPP_MIN:
3715 case CPP_MAX:
3716 /* These tokens should not survive translation phase 4. */
3717 case CPP_HASH:
3718 case CPP_PASTE:
3719 error ("syntax error at '%s' token", NAME(last_token));
3720 goto get_next;
3722 default:
3723 abort ();
3724 }
3725 /* NOTREACHED */
3726 }
3728 static int
3729 yylex (void)
3730 {
3731 int r;
3732 timevar_push (TV_LEX);
3733 r = _yylex();
3734 timevar_pop (TV_LEX);
3735 return r;
3736 }
3738 /* Function used when yydebug is set, to print a token in more detail. */
3740 static void
3741 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3742 {
3743 tree t = yyl.ttype;
3745 fprintf (file, " [%s]", NAME(last_token));
3747 switch (yychar)
3748 {
3749 case IDENTIFIER:
3750 case TYPENAME:
3751 case OBJECTNAME:
3752 case TYPESPEC:
3753 case TYPE_QUAL:
3754 case SCSPEC:
3755 case STATIC:
3756 if (IDENTIFIER_POINTER (t))
3757 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3758 break;
3760 case CONSTANT:
3761 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3762 if (TREE_CODE (t) == INTEGER_CST)
3763 {
3764 fputs (" ", file);
3765 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3766 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3767 }
3768 break;
3769 }
3770 }
3771 \f
3772 /* This is not the ideal place to put these, but we have to get them out
3773 of c-lex.c because cp/lex.c has its own versions. */
3775 /* Free malloced parser stacks if necessary. */
3777 void
3778 free_parser_stacks (void)
3779 {
3780 }
3782 /* Parse the file. */
3783 void
3784 c_parse_file (void)
3785 {
3786 yyparse ();
3787 /* In case there were missing closebraces, get us back to the global
3788 binding level. */
3789 while (! global_bindings_p ())
3790 poplevel (0, 0, 0);
3791 /* __FUNCTION__ is defined at file scope (""). This
3792 call may not be necessary as my tests indicate it
3793 still works without it. */
3794 finish_fname_decls ();
3796 if (malloced_yyss)
3797 {
3798 free (malloced_yyss);
3799 free (malloced_yyvs);
3800 malloced_yyss = 0;
3801 }
3802 }
3804 #include "gt-c-parse.h"