| blob | 9a18d3407372ff1500576c8d7fd450e449755117 |
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 AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
179 %token OBJC_STRING
181 %type <code> unop
182 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
183 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
185 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
186 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
187 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
188 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
189 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
190 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
191 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
192 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
193 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
194 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
195 %type <ttype> declspecs_ts declspecs_nots
196 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
197 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
198 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
199 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
200 %type <ttype> typespec_nonreserved_nonattr
202 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
203 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
204 %type <ttype> init maybeasm
205 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
206 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
207 %type <ttype> any_word extension
209 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
210 %type <ttype> do_stmt_start poplevel stmt label
212 %type <ttype> c99_block_start c99_block_end
213 %type <ttype> declarator
214 %type <ttype> notype_declarator after_type_declarator
215 %type <ttype> parm_declarator
216 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
217 %type <ttype> array_declarator
219 %type <ttype> structsp_attr structsp_nonattr
220 %type <ttype> component_decl_list component_decl_list2
221 %type <ttype> component_decl components components_notype component_declarator
222 %type <ttype> component_notype_declarator
223 %type <ttype> enumlist enumerator
224 %type <ttype> struct_head union_head enum_head
225 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
226 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
227 %type <ttype> xexpr parms parm firstparm identifiers
229 %type <ttype> parmlist parmlist_1 parmlist_2
230 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
231 %type <ttype> identifiers_or_typenames
233 %type <itype> setspecs setspecs_fp
235 %type <location> save_location
236 \f
237 @@ifobjc
238 /* the Objective-C nonterminals */
240 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
241 %type <ttype> methoddecl unaryselector keywordselector selector
242 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
243 %type <ttype> keywordexpr keywordarglist keywordarg
244 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
245 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
246 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
248 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
250 %type <ttype> superclass
251 %type <itype> objc_try_catch_stmt objc_finally_block
252 @@end_ifobjc
253 \f
254 %{
255 /* Number of statements (loosely speaking) and compound statements
256 seen so far. */
257 static int stmt_count;
258 static int compstmt_count;
260 extern int c_in_iteration_stmt;
261 extern int c_in_case_stmt;
263 /* Input location of the end of the body of last simple_if;
264 used by the stmt-rule immediately after simple_if returns. */
265 static location_t if_stmt_locus;
268 /* List of types and structure classes of the current declaration. */
269 static GTY(()) tree current_declspecs;
270 static GTY(()) tree prefix_attributes;
272 /* List of all the attributes applying to the identifier currently being
273 declared; includes prefix_attributes and possibly some more attributes
274 just after a comma. */
275 static GTY(()) tree all_prefix_attributes;
277 /* Stack of saved values of current_declspecs, prefix_attributes and
278 all_prefix_attributes. */
279 static GTY(()) tree declspec_stack;
281 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
282 should be called from the productions making use of setspecs. */
283 #define PUSH_DECLSPEC_STACK \
284 do { \
285 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
286 all_prefix_attributes), \
287 current_declspecs, \
288 declspec_stack); \
289 } while (0)
291 #define POP_DECLSPEC_STACK \
292 do { \
293 current_declspecs = TREE_VALUE (declspec_stack); \
294 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
295 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
296 declspec_stack = TREE_CHAIN (declspec_stack); \
297 } while (0)
299 /* For __extension__, save/restore the warning flags which are
300 controlled by __extension__. */
301 #define SAVE_EXT_FLAGS() \
302 size_int (pedantic \
303 | (warn_pointer_arith << 1) \
304 | (warn_traditional << 2) \
305 | (flag_iso << 3))
307 #define RESTORE_EXT_FLAGS(tval) \
308 do { \
309 int val = tree_low_cst (tval, 0); \
310 pedantic = val & 1; \
311 warn_pointer_arith = (val >> 1) & 1; \
312 warn_traditional = (val >> 2) & 1; \
313 flag_iso = (val >> 3) & 1; \
314 } while (0)
316 @@ifobjc
317 /* Objective-C specific parser/lexer information */
319 static enum tree_code objc_inherit_code;
320 static int objc_pq_context = 0, objc_public_flag = 0;
322 /* The following flag is needed to contextualize ObjC lexical analysis.
323 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
324 an identifier to an ObjC class, even if a class with that name
325 exists. */
326 static int objc_need_raw_identifier;
327 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
328 @@end_ifobjc
330 @@ifc
331 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
332 @@end_ifc
334 static bool parsing_iso_function_signature;
336 /* Tell yyparse how to print a token's value, if yydebug is set. */
338 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
340 static void yyprint (FILE *, int, YYSTYPE);
341 static void yyerror (const char *);
342 static int yylexname (void);
343 static inline int _yylex (void);
344 static int yylex (void);
345 static void init_reswords (void);
347 /* Initialisation routine for this file. */
348 void
349 c_parse_init (void)
350 {
351 init_reswords ();
352 }
354 %}
355 \f
356 %%
357 program: /* empty */
358 { if (pedantic)
359 pedwarn ("ISO C forbids an empty source file");
360 }
361 | extdefs
362 ;
364 /* the reason for the strange actions in this rule
365 is so that notype_initdecls when reached via datadef
366 can find a valid list of type and sc specs in $0. */
368 extdefs:
369 {$<ttype>$ = NULL_TREE; } extdef
370 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
371 ;
373 extdef:
374 extdef_1
375 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
376 ;
378 extdef_1:
379 fndef
380 | datadef
381 @@ifobjc
382 | objcdef
383 @@end_ifobjc
384 | ASM_KEYWORD '(' expr ')' ';'
385 { STRIP_NOPS ($3);
386 if ((TREE_CODE ($3) == ADDR_EXPR
387 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
388 || TREE_CODE ($3) == STRING_CST)
389 assemble_asm ($3);
390 else
391 error ("argument of `asm' is not a constant string"); }
392 | extension extdef
393 { RESTORE_EXT_FLAGS ($1); }
394 ;
396 datadef:
397 setspecs notype_initdecls ';'
398 { if (pedantic)
399 error ("ISO C forbids data definition with no type or storage class");
400 else
401 warning ("data definition has no type or storage class");
403 POP_DECLSPEC_STACK; }
404 | declspecs_nots setspecs notype_initdecls ';'
405 { POP_DECLSPEC_STACK; }
406 | declspecs_ts setspecs initdecls ';'
407 { POP_DECLSPEC_STACK; }
408 | declspecs ';'
409 { shadow_tag ($1); }
410 | error ';'
411 | error '}'
412 | ';'
413 { if (pedantic)
414 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
415 ;
416 \f
417 fndef:
418 declspecs_ts setspecs declarator
419 { if (! start_function (current_declspecs, $3,
420 all_prefix_attributes))
421 YYERROR1;
422 }
423 old_style_parm_decls save_location
424 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
425 store_parm_decls (); }
426 compstmt_or_error
427 { finish_function ();
428 POP_DECLSPEC_STACK; }
429 | declspecs_ts setspecs declarator error
430 { POP_DECLSPEC_STACK; }
431 | declspecs_nots setspecs notype_declarator
432 { if (! start_function (current_declspecs, $3,
433 all_prefix_attributes))
434 YYERROR1;
435 }
436 old_style_parm_decls save_location
437 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
438 store_parm_decls (); }
439 compstmt_or_error
440 { finish_function ();
441 POP_DECLSPEC_STACK; }
442 | declspecs_nots setspecs notype_declarator error
443 { POP_DECLSPEC_STACK; }
444 | setspecs notype_declarator
445 { if (! start_function (NULL_TREE, $2,
446 all_prefix_attributes))
447 YYERROR1;
448 }
449 old_style_parm_decls save_location
450 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
451 store_parm_decls (); }
452 compstmt_or_error
453 { finish_function ();
454 POP_DECLSPEC_STACK; }
455 | setspecs notype_declarator error
456 { POP_DECLSPEC_STACK; }
457 ;
459 identifier:
460 IDENTIFIER
461 | TYPENAME
462 @@ifobjc
463 | OBJECTNAME
464 | CLASSNAME
465 @@end_ifobjc
466 ;
468 unop: '&'
469 { $$ = ADDR_EXPR; }
470 | '-'
471 { $$ = NEGATE_EXPR; }
472 | '+'
473 { $$ = CONVERT_EXPR;
474 @@ifc
475 if (warn_traditional && !in_system_header)
476 warning ("traditional C rejects the unary plus operator");
477 @@end_ifc
478 }
479 | PLUSPLUS
480 { $$ = PREINCREMENT_EXPR; }
481 | MINUSMINUS
482 { $$ = PREDECREMENT_EXPR; }
483 | '~'
484 { $$ = BIT_NOT_EXPR; }
485 | '!'
486 { $$ = TRUTH_NOT_EXPR; }
487 ;
489 expr: nonnull_exprlist
490 { $$ = build_compound_expr ($1); }
491 ;
493 exprlist:
494 /* empty */
495 { $$ = NULL_TREE; }
496 | nonnull_exprlist
497 ;
499 nonnull_exprlist:
500 expr_no_commas
501 { $$ = build_tree_list (NULL_TREE, $1); }
502 | nonnull_exprlist ',' expr_no_commas
503 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
504 ;
506 unary_expr:
507 primary
508 | '*' cast_expr %prec UNARY
509 { $$ = build_indirect_ref ($2, "unary *"); }
510 /* __extension__ turns off -pedantic for following primary. */
511 | extension cast_expr %prec UNARY
512 { $$ = $2;
513 RESTORE_EXT_FLAGS ($1); }
514 | unop cast_expr %prec UNARY
515 { $$ = build_unary_op ($1, $2, 0);
516 overflow_warning ($$); }
517 /* Refer to the address of a label as a pointer. */
518 | ANDAND identifier
519 { $$ = finish_label_address_expr ($2); }
520 | sizeof unary_expr %prec UNARY
521 { skip_evaluation--;
522 if (TREE_CODE ($2) == COMPONENT_REF
523 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
524 error ("`sizeof' applied to a bit-field");
525 $$ = c_sizeof (TREE_TYPE ($2)); }
526 | sizeof '(' typename ')' %prec HYPERUNARY
527 { skip_evaluation--;
528 $$ = c_sizeof (groktypename ($3)); }
529 | alignof unary_expr %prec UNARY
530 { skip_evaluation--;
531 $$ = c_alignof_expr ($2); }
532 | alignof '(' typename ')' %prec HYPERUNARY
533 { skip_evaluation--;
534 $$ = c_alignof (groktypename ($3)); }
535 | REALPART cast_expr %prec UNARY
536 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
537 | IMAGPART cast_expr %prec UNARY
538 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
539 ;
541 sizeof:
542 SIZEOF { skip_evaluation++; }
543 ;
545 alignof:
546 ALIGNOF { skip_evaluation++; }
547 ;
549 typeof:
550 TYPEOF { skip_evaluation++; }
551 ;
553 cast_expr:
554 unary_expr
555 | '(' typename ')' cast_expr %prec UNARY
556 { $$ = c_cast_expr ($2, $4); }
557 ;
559 expr_no_commas:
560 cast_expr
561 | expr_no_commas '+' expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas '-' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas '*' expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas '/' expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '%' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas LSHIFT expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas RSHIFT expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas ARITHCOMPARE expr_no_commas
576 { $$ = parser_build_binary_op ($2, $1, $3); }
577 | expr_no_commas EQCOMPARE expr_no_commas
578 { $$ = parser_build_binary_op ($2, $1, $3); }
579 | expr_no_commas '&' expr_no_commas
580 { $$ = parser_build_binary_op ($2, $1, $3); }
581 | expr_no_commas '|' expr_no_commas
582 { $$ = parser_build_binary_op ($2, $1, $3); }
583 | expr_no_commas '^' expr_no_commas
584 { $$ = parser_build_binary_op ($2, $1, $3); }
585 | expr_no_commas ANDAND
586 { $1 = c_common_truthvalue_conversion
587 (default_conversion ($1));
588 skip_evaluation += $1 == truthvalue_false_node; }
589 expr_no_commas
590 { skip_evaluation -= $1 == truthvalue_false_node;
591 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
592 | expr_no_commas OROR
593 { $1 = c_common_truthvalue_conversion
594 (default_conversion ($1));
595 skip_evaluation += $1 == truthvalue_true_node; }
596 expr_no_commas
597 { skip_evaluation -= $1 == truthvalue_true_node;
598 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
599 | expr_no_commas '?'
600 { $1 = c_common_truthvalue_conversion
601 (default_conversion ($1));
602 skip_evaluation += $1 == truthvalue_false_node; }
603 expr ':'
604 { skip_evaluation += (($1 == truthvalue_true_node)
605 - ($1 == truthvalue_false_node)); }
606 expr_no_commas
607 { skip_evaluation -= $1 == truthvalue_true_node;
608 $$ = build_conditional_expr ($1, $4, $7); }
609 | expr_no_commas '?'
610 { if (pedantic)
611 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
612 /* Make sure first operand is calculated only once. */
613 $<ttype>2 = save_expr ($1);
614 $1 = c_common_truthvalue_conversion
615 (default_conversion ($<ttype>2));
616 skip_evaluation += $1 == truthvalue_true_node; }
617 ':' expr_no_commas
618 { skip_evaluation -= $1 == truthvalue_true_node;
619 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
620 | expr_no_commas '=' expr_no_commas
621 { char class;
622 $$ = build_modify_expr ($1, NOP_EXPR, $3);
623 class = TREE_CODE_CLASS (TREE_CODE ($$));
624 if (IS_EXPR_CODE_CLASS (class))
625 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
626 }
627 | expr_no_commas ASSIGN expr_no_commas
628 { char class;
629 $$ = build_modify_expr ($1, $2, $3);
630 /* This inhibits warnings in
631 c_common_truthvalue_conversion. */
632 class = TREE_CODE_CLASS (TREE_CODE ($$));
633 if (IS_EXPR_CODE_CLASS (class))
634 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
635 }
636 ;
638 primary:
639 IDENTIFIER
640 {
641 if (yychar == YYEMPTY)
642 yychar = YYLEX;
643 $$ = build_external_ref ($1, yychar == '(');
644 }
645 | CONSTANT
646 | STRING
647 | FUNC_NAME
648 { $$ = fname_decl (C_RID_CODE ($$), $$); }
649 | '(' typename ')' '{'
650 { start_init (NULL_TREE, NULL, 0);
651 $2 = groktypename ($2);
652 really_start_incremental_init ($2); }
653 initlist_maybe_comma '}' %prec UNARY
654 { tree constructor = pop_init_level (0);
655 tree type = $2;
656 finish_init ();
658 if (pedantic && ! flag_isoc99)
659 pedwarn ("ISO C89 forbids compound literals");
660 $$ = build_compound_literal (type, constructor);
661 }
662 | '(' expr ')'
663 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
664 if (IS_EXPR_CODE_CLASS (class))
665 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
666 $$ = $2; }
667 | '(' error ')'
668 { $$ = error_mark_node; }
669 | compstmt_primary_start compstmt_nostart ')'
670 { tree saved_last_tree;
672 if (pedantic)
673 pedwarn ("ISO C forbids braced-groups within expressions");
674 saved_last_tree = COMPOUND_BODY ($1);
675 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
676 last_tree = saved_last_tree;
677 TREE_CHAIN (last_tree) = NULL_TREE;
678 if (!last_expr_type)
679 last_expr_type = void_type_node;
680 $$ = build1 (STMT_EXPR, last_expr_type, $1);
681 TREE_SIDE_EFFECTS ($$) = 1;
682 }
683 | compstmt_primary_start error ')'
684 {
685 last_tree = COMPOUND_BODY ($1);
686 TREE_CHAIN (last_tree) = NULL_TREE;
687 $$ = error_mark_node;
688 }
689 | primary '(' exprlist ')' %prec '.'
690 { $$ = build_function_call ($1, $3); }
691 | VA_ARG '(' expr_no_commas ',' typename ')'
692 { $$ = build_va_arg ($3, groktypename ($5)); }
694 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
695 {
696 tree c;
698 c = fold ($3);
699 STRIP_NOPS (c);
700 if (TREE_CODE (c) != INTEGER_CST)
701 error ("first argument to __builtin_choose_expr not a constant");
702 $$ = integer_zerop (c) ? $7 : $5;
703 }
704 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
705 {
706 tree e1, e2;
708 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
709 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
711 $$ = comptypes (e1, e2, COMPARE_STRICT)
712 ? build_int_2 (1, 0) : build_int_2 (0, 0);
713 }
714 | primary '[' expr ']' %prec '.'
715 { $$ = build_array_ref ($1, $3); }
716 | primary '.' identifier
717 {
718 @@ifobjc
719 if (!is_public ($1, $3))
720 $$ = error_mark_node;
721 else
722 @@end_ifobjc
723 $$ = build_component_ref ($1, $3);
724 }
725 | primary POINTSAT identifier
726 {
727 tree expr = build_indirect_ref ($1, "->");
729 @@ifobjc
730 if (!is_public (expr, $3))
731 $$ = error_mark_node;
732 else
733 @@end_ifobjc
734 $$ = build_component_ref (expr, $3);
735 }
736 | primary PLUSPLUS
737 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
738 | primary MINUSMINUS
739 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
740 @@ifobjc
741 | objcmessageexpr
742 { $$ = build_message_expr ($1); }
743 | objcselectorexpr
744 { $$ = build_selector_expr ($1); }
745 | objcprotocolexpr
746 { $$ = build_protocol_expr ($1); }
747 | objcencodeexpr
748 { $$ = build_encode_expr ($1); }
749 | OBJC_STRING
750 { $$ = build_objc_string_object ($1); }
751 @@end_ifobjc
752 ;
754 old_style_parm_decls:
755 old_style_parm_decls_1
756 {
757 parsing_iso_function_signature = false; /* Reset after decls. */
758 }
759 ;
761 old_style_parm_decls_1:
762 /* empty */
763 {
764 if (warn_traditional && !in_system_header
765 && parsing_iso_function_signature)
766 warning ("traditional C rejects ISO C style function definitions");
767 if (warn_old_style_definition && !in_system_header
768 && !parsing_iso_function_signature)
769 warning ("old-style parameter declaration");
770 parsing_iso_function_signature = false; /* Reset after warning. */
771 }
772 | datadecls
773 {
774 if (warn_old_style_definition && !in_system_header)
775 warning ("old-style parameter declaration");
776 }
777 ;
779 /* The following are analogous to lineno_decl, decls and decl
780 except that they do not allow nested functions.
781 They are used for old-style parm decls. */
782 lineno_datadecl:
783 save_location datadecl
784 { }
785 ;
787 datadecls:
788 lineno_datadecl
789 | errstmt
790 | datadecls lineno_datadecl
791 | lineno_datadecl errstmt
792 ;
794 /* We don't allow prefix attributes here because they cause reduce/reduce
795 conflicts: we can't know whether we're parsing a function decl with
796 attribute suffix, or function defn with attribute prefix on first old
797 style parm. */
798 datadecl:
799 declspecs_ts_nosa setspecs initdecls ';'
800 { POP_DECLSPEC_STACK; }
801 | declspecs_nots_nosa setspecs notype_initdecls ';'
802 { POP_DECLSPEC_STACK; }
803 | declspecs_ts_nosa ';'
804 { shadow_tag_warned ($1, 1);
805 pedwarn ("empty declaration"); }
806 | declspecs_nots_nosa ';'
807 { pedwarn ("empty declaration"); }
808 ;
810 /* This combination which saves a lineno before a decl
811 is the normal thing to use, rather than decl itself.
812 This is to avoid shift/reduce conflicts in contexts
813 where statement labels are allowed. */
814 lineno_decl:
815 save_location decl
816 { }
817 ;
819 /* records the type and storage class specs to use for processing
820 the declarators that follow.
821 Maintains a stack of outer-level values of current_declspecs,
822 for the sake of parm declarations nested in function declarators. */
823 setspecs: /* empty */
824 { pending_xref_error ();
825 PUSH_DECLSPEC_STACK;
826 split_specs_attrs ($<ttype>0,
827 ¤t_declspecs, &prefix_attributes);
828 all_prefix_attributes = prefix_attributes; }
829 ;
831 /* Possibly attributes after a comma, which should reset all_prefix_attributes
832 to prefix_attributes with these ones chained on the front. */
833 maybe_resetattrs:
834 maybe_attribute
835 { all_prefix_attributes = chainon ($1, prefix_attributes); }
836 ;
838 decl:
839 declspecs_ts setspecs initdecls ';'
840 { POP_DECLSPEC_STACK; }
841 | declspecs_nots setspecs notype_initdecls ';'
842 { POP_DECLSPEC_STACK; }
843 | declspecs_ts setspecs nested_function
844 { POP_DECLSPEC_STACK; }
845 | declspecs_nots setspecs notype_nested_function
846 { POP_DECLSPEC_STACK; }
847 | declspecs ';'
848 { shadow_tag ($1); }
849 | extension decl
850 { RESTORE_EXT_FLAGS ($1); }
851 ;
853 /* A list of declaration specifiers. These are:
855 - Storage class specifiers (scspec), which for GCC currently includes
856 function specifiers ("inline").
858 - Type specifiers (typespec_*).
860 - Type qualifiers (TYPE_QUAL).
862 - Attribute specifier lists (attributes).
864 These are stored as a TREE_LIST; the head of the list is the last
865 item in the specifier list. Each entry in the list has either a
866 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
867 is a single other specifier or qualifier; and a TREE_CHAIN that is the
868 rest of the list. TREE_STATIC is set on the list if something other
869 than a storage class specifier or attribute has been seen; this is used
870 to warn for the obsolescent usage of storage class specifiers other than
871 at the start of the list. (Doing this properly would require function
872 specifiers to be handled separately from storage class specifiers.)
874 The various cases below are classified according to:
876 (a) Whether a storage class specifier is included or not; some
877 places in the grammar disallow storage class specifiers (_sc or _nosc).
879 (b) Whether a type specifier has been seen; after a type specifier,
880 a typedef name is an identifier to redeclare (_ts or _nots).
882 (c) Whether the list starts with an attribute; in certain places,
883 the grammar requires specifiers that don't start with an attribute
884 (_sa or _nosa).
886 (d) Whether the list ends with an attribute (or a specifier such that
887 any following attribute would have been parsed as part of that specifier);
888 this avoids shift-reduce conflicts in the parsing of attributes
889 (_ea or _noea).
891 TODO:
893 (i) Distinguish between function specifiers and storage class specifiers,
894 at least for the purpose of warnings about obsolescent usage.
896 (ii) Halve the number of productions here by eliminating the _sc/_nosc
897 distinction and instead checking where required that storage class
898 specifiers aren't present. */
900 /* Declspecs which contain at least one type specifier or typedef name.
901 (Just `const' or `volatile' is not enough.)
902 A typedef'd name following these is taken as a name to be declared.
903 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
905 declspecs_nosc_nots_nosa_noea:
906 TYPE_QUAL
907 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
908 TREE_STATIC ($$) = 1; }
909 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
910 { $$ = tree_cons (NULL_TREE, $2, $1);
911 TREE_STATIC ($$) = 1; }
912 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
913 { $$ = tree_cons (NULL_TREE, $2, $1);
914 TREE_STATIC ($$) = 1; }
915 ;
917 declspecs_nosc_nots_nosa_ea:
918 declspecs_nosc_nots_nosa_noea attributes
919 { $$ = tree_cons ($2, NULL_TREE, $1);
920 TREE_STATIC ($$) = TREE_STATIC ($1); }
921 ;
923 declspecs_nosc_nots_sa_noea:
924 declspecs_nosc_nots_sa_noea TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
927 | declspecs_nosc_nots_sa_ea TYPE_QUAL
928 { $$ = tree_cons (NULL_TREE, $2, $1);
929 TREE_STATIC ($$) = 1; }
930 ;
932 declspecs_nosc_nots_sa_ea:
933 attributes
934 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
935 TREE_STATIC ($$) = 0; }
936 | declspecs_nosc_nots_sa_noea attributes
937 { $$ = tree_cons ($2, NULL_TREE, $1);
938 TREE_STATIC ($$) = TREE_STATIC ($1); }
939 ;
941 declspecs_nosc_ts_nosa_noea:
942 typespec_nonattr
943 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
957 | declspecs_nosc_nots_nosa_noea typespec_nonattr
958 { $$ = tree_cons (NULL_TREE, $2, $1);
959 TREE_STATIC ($$) = 1; }
960 | declspecs_nosc_nots_nosa_ea typespec_nonattr
961 { $$ = tree_cons (NULL_TREE, $2, $1);
962 TREE_STATIC ($$) = 1; }
963 ;
965 declspecs_nosc_ts_nosa_ea:
966 typespec_attr
967 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
968 TREE_STATIC ($$) = 1; }
969 | declspecs_nosc_ts_nosa_noea attributes
970 { $$ = tree_cons ($2, NULL_TREE, $1);
971 TREE_STATIC ($$) = TREE_STATIC ($1); }
972 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
978 | declspecs_nosc_nots_nosa_noea typespec_attr
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
981 | declspecs_nosc_nots_nosa_ea typespec_attr
982 { $$ = tree_cons (NULL_TREE, $2, $1);
983 TREE_STATIC ($$) = 1; }
984 ;
986 declspecs_nosc_ts_sa_noea:
987 declspecs_nosc_ts_sa_noea TYPE_QUAL
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_ea TYPE_QUAL
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
999 | declspecs_nosc_nots_sa_noea typespec_nonattr
1000 { $$ = tree_cons (NULL_TREE, $2, $1);
1001 TREE_STATIC ($$) = 1; }
1002 | declspecs_nosc_nots_sa_ea typespec_nonattr
1003 { $$ = tree_cons (NULL_TREE, $2, $1);
1004 TREE_STATIC ($$) = 1; }
1005 ;
1007 declspecs_nosc_ts_sa_ea:
1008 declspecs_nosc_ts_sa_noea attributes
1009 { $$ = tree_cons ($2, NULL_TREE, $1);
1010 TREE_STATIC ($$) = TREE_STATIC ($1); }
1011 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1014 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1015 { $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = 1; }
1017 | declspecs_nosc_nots_sa_noea typespec_attr
1018 { $$ = tree_cons (NULL_TREE, $2, $1);
1019 TREE_STATIC ($$) = 1; }
1020 | declspecs_nosc_nots_sa_ea typespec_attr
1021 { $$ = tree_cons (NULL_TREE, $2, $1);
1022 TREE_STATIC ($$) = 1; }
1023 ;
1025 declspecs_sc_nots_nosa_noea:
1026 scspec
1027 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1028 TREE_STATIC ($$) = 0; }
1029 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1030 { $$ = tree_cons (NULL_TREE, $2, $1);
1031 TREE_STATIC ($$) = 1; }
1032 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1033 { $$ = tree_cons (NULL_TREE, $2, $1);
1034 TREE_STATIC ($$) = 1; }
1035 | declspecs_nosc_nots_nosa_noea scspec
1036 { if (extra_warnings && TREE_STATIC ($1))
1037 warning ("`%s' is not at beginning of declaration",
1038 IDENTIFIER_POINTER ($2));
1039 $$ = tree_cons (NULL_TREE, $2, $1);
1040 TREE_STATIC ($$) = TREE_STATIC ($1); }
1041 | declspecs_nosc_nots_nosa_ea scspec
1042 { if (extra_warnings && TREE_STATIC ($1))
1043 warning ("`%s' is not at beginning of declaration",
1044 IDENTIFIER_POINTER ($2));
1045 $$ = tree_cons (NULL_TREE, $2, $1);
1046 TREE_STATIC ($$) = TREE_STATIC ($1); }
1047 | declspecs_sc_nots_nosa_noea scspec
1048 { if (extra_warnings && TREE_STATIC ($1))
1049 warning ("`%s' is not at beginning of declaration",
1050 IDENTIFIER_POINTER ($2));
1051 $$ = tree_cons (NULL_TREE, $2, $1);
1052 TREE_STATIC ($$) = TREE_STATIC ($1); }
1053 | declspecs_sc_nots_nosa_ea scspec
1054 { if (extra_warnings && TREE_STATIC ($1))
1055 warning ("`%s' is not at beginning of declaration",
1056 IDENTIFIER_POINTER ($2));
1057 $$ = tree_cons (NULL_TREE, $2, $1);
1058 TREE_STATIC ($$) = TREE_STATIC ($1); }
1059 ;
1061 declspecs_sc_nots_nosa_ea:
1062 declspecs_sc_nots_nosa_noea attributes
1063 { $$ = tree_cons ($2, NULL_TREE, $1);
1064 TREE_STATIC ($$) = TREE_STATIC ($1); }
1065 ;
1067 declspecs_sc_nots_sa_noea:
1068 declspecs_sc_nots_sa_noea TYPE_QUAL
1069 { $$ = tree_cons (NULL_TREE, $2, $1);
1070 TREE_STATIC ($$) = 1; }
1071 | declspecs_sc_nots_sa_ea TYPE_QUAL
1072 { $$ = tree_cons (NULL_TREE, $2, $1);
1073 TREE_STATIC ($$) = 1; }
1074 | declspecs_nosc_nots_sa_noea scspec
1075 { if (extra_warnings && TREE_STATIC ($1))
1076 warning ("`%s' is not at beginning of declaration",
1077 IDENTIFIER_POINTER ($2));
1078 $$ = tree_cons (NULL_TREE, $2, $1);
1079 TREE_STATIC ($$) = TREE_STATIC ($1); }
1080 | declspecs_nosc_nots_sa_ea scspec
1081 { if (extra_warnings && TREE_STATIC ($1))
1082 warning ("`%s' is not at beginning of declaration",
1083 IDENTIFIER_POINTER ($2));
1084 $$ = tree_cons (NULL_TREE, $2, $1);
1085 TREE_STATIC ($$) = TREE_STATIC ($1); }
1086 | declspecs_sc_nots_sa_noea scspec
1087 { if (extra_warnings && TREE_STATIC ($1))
1088 warning ("`%s' is not at beginning of declaration",
1089 IDENTIFIER_POINTER ($2));
1090 $$ = tree_cons (NULL_TREE, $2, $1);
1091 TREE_STATIC ($$) = TREE_STATIC ($1); }
1092 | declspecs_sc_nots_sa_ea scspec
1093 { if (extra_warnings && TREE_STATIC ($1))
1094 warning ("`%s' is not at beginning of declaration",
1095 IDENTIFIER_POINTER ($2));
1096 $$ = tree_cons (NULL_TREE, $2, $1);
1097 TREE_STATIC ($$) = TREE_STATIC ($1); }
1098 ;
1100 declspecs_sc_nots_sa_ea:
1101 declspecs_sc_nots_sa_noea attributes
1102 { $$ = tree_cons ($2, NULL_TREE, $1);
1103 TREE_STATIC ($$) = TREE_STATIC ($1); }
1104 ;
1106 declspecs_sc_ts_nosa_noea:
1107 declspecs_sc_ts_nosa_noea TYPE_QUAL
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1117 { $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = 1; }
1119 | declspecs_sc_nots_nosa_noea typespec_nonattr
1120 { $$ = tree_cons (NULL_TREE, $2, $1);
1121 TREE_STATIC ($$) = 1; }
1122 | declspecs_sc_nots_nosa_ea typespec_nonattr
1123 { $$ = tree_cons (NULL_TREE, $2, $1);
1124 TREE_STATIC ($$) = 1; }
1125 | declspecs_nosc_ts_nosa_noea scspec
1126 { if (extra_warnings && TREE_STATIC ($1))
1127 warning ("`%s' is not at beginning of declaration",
1128 IDENTIFIER_POINTER ($2));
1129 $$ = tree_cons (NULL_TREE, $2, $1);
1130 TREE_STATIC ($$) = TREE_STATIC ($1); }
1131 | declspecs_nosc_ts_nosa_ea scspec
1132 { if (extra_warnings && TREE_STATIC ($1))
1133 warning ("`%s' is not at beginning of declaration",
1134 IDENTIFIER_POINTER ($2));
1135 $$ = tree_cons (NULL_TREE, $2, $1);
1136 TREE_STATIC ($$) = TREE_STATIC ($1); }
1137 | declspecs_sc_ts_nosa_noea scspec
1138 { if (extra_warnings && TREE_STATIC ($1))
1139 warning ("`%s' is not at beginning of declaration",
1140 IDENTIFIER_POINTER ($2));
1141 $$ = tree_cons (NULL_TREE, $2, $1);
1142 TREE_STATIC ($$) = TREE_STATIC ($1); }
1143 | declspecs_sc_ts_nosa_ea scspec
1144 { if (extra_warnings && TREE_STATIC ($1))
1145 warning ("`%s' is not at beginning of declaration",
1146 IDENTIFIER_POINTER ($2));
1147 $$ = tree_cons (NULL_TREE, $2, $1);
1148 TREE_STATIC ($$) = TREE_STATIC ($1); }
1149 ;
1151 declspecs_sc_ts_nosa_ea:
1152 declspecs_sc_ts_nosa_noea attributes
1153 { $$ = tree_cons ($2, NULL_TREE, $1);
1154 TREE_STATIC ($$) = TREE_STATIC ($1); }
1155 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1161 | declspecs_sc_nots_nosa_noea typespec_attr
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1164 | declspecs_sc_nots_nosa_ea typespec_attr
1165 { $$ = tree_cons (NULL_TREE, $2, $1);
1166 TREE_STATIC ($$) = 1; }
1167 ;
1169 declspecs_sc_ts_sa_noea:
1170 declspecs_sc_ts_sa_noea TYPE_QUAL
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_ts_sa_ea TYPE_QUAL
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1180 { $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = 1; }
1182 | declspecs_sc_nots_sa_noea typespec_nonattr
1183 { $$ = tree_cons (NULL_TREE, $2, $1);
1184 TREE_STATIC ($$) = 1; }
1185 | declspecs_sc_nots_sa_ea typespec_nonattr
1186 { $$ = tree_cons (NULL_TREE, $2, $1);
1187 TREE_STATIC ($$) = 1; }
1188 | declspecs_nosc_ts_sa_noea scspec
1189 { if (extra_warnings && TREE_STATIC ($1))
1190 warning ("`%s' is not at beginning of declaration",
1191 IDENTIFIER_POINTER ($2));
1192 $$ = tree_cons (NULL_TREE, $2, $1);
1193 TREE_STATIC ($$) = TREE_STATIC ($1); }
1194 | declspecs_nosc_ts_sa_ea scspec
1195 { if (extra_warnings && TREE_STATIC ($1))
1196 warning ("`%s' is not at beginning of declaration",
1197 IDENTIFIER_POINTER ($2));
1198 $$ = tree_cons (NULL_TREE, $2, $1);
1199 TREE_STATIC ($$) = TREE_STATIC ($1); }
1200 | declspecs_sc_ts_sa_noea scspec
1201 { if (extra_warnings && TREE_STATIC ($1))
1202 warning ("`%s' is not at beginning of declaration",
1203 IDENTIFIER_POINTER ($2));
1204 $$ = tree_cons (NULL_TREE, $2, $1);
1205 TREE_STATIC ($$) = TREE_STATIC ($1); }
1206 | declspecs_sc_ts_sa_ea scspec
1207 { if (extra_warnings && TREE_STATIC ($1))
1208 warning ("`%s' is not at beginning of declaration",
1209 IDENTIFIER_POINTER ($2));
1210 $$ = tree_cons (NULL_TREE, $2, $1);
1211 TREE_STATIC ($$) = TREE_STATIC ($1); }
1212 ;
1214 declspecs_sc_ts_sa_ea:
1215 declspecs_sc_ts_sa_noea attributes
1216 { $$ = tree_cons ($2, NULL_TREE, $1);
1217 TREE_STATIC ($$) = TREE_STATIC ($1); }
1218 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1221 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1222 { $$ = tree_cons (NULL_TREE, $2, $1);
1223 TREE_STATIC ($$) = 1; }
1224 | declspecs_sc_nots_sa_noea typespec_attr
1225 { $$ = tree_cons (NULL_TREE, $2, $1);
1226 TREE_STATIC ($$) = 1; }
1227 | declspecs_sc_nots_sa_ea typespec_attr
1228 { $$ = tree_cons (NULL_TREE, $2, $1);
1229 TREE_STATIC ($$) = 1; }
1230 ;
1232 /* Particular useful classes of declspecs. */
1233 declspecs_ts:
1234 declspecs_nosc_ts_nosa_noea
1235 | declspecs_nosc_ts_nosa_ea
1236 | declspecs_nosc_ts_sa_noea
1237 | declspecs_nosc_ts_sa_ea
1238 | declspecs_sc_ts_nosa_noea
1239 | declspecs_sc_ts_nosa_ea
1240 | declspecs_sc_ts_sa_noea
1241 | declspecs_sc_ts_sa_ea
1242 ;
1244 declspecs_nots:
1245 declspecs_nosc_nots_nosa_noea
1246 | declspecs_nosc_nots_nosa_ea
1247 | declspecs_nosc_nots_sa_noea
1248 | declspecs_nosc_nots_sa_ea
1249 | declspecs_sc_nots_nosa_noea
1250 | declspecs_sc_nots_nosa_ea
1251 | declspecs_sc_nots_sa_noea
1252 | declspecs_sc_nots_sa_ea
1253 ;
1255 declspecs_ts_nosa:
1256 declspecs_nosc_ts_nosa_noea
1257 | declspecs_nosc_ts_nosa_ea
1258 | declspecs_sc_ts_nosa_noea
1259 | declspecs_sc_ts_nosa_ea
1260 ;
1262 declspecs_nots_nosa:
1263 declspecs_nosc_nots_nosa_noea
1264 | declspecs_nosc_nots_nosa_ea
1265 | declspecs_sc_nots_nosa_noea
1266 | declspecs_sc_nots_nosa_ea
1267 ;
1269 declspecs_nosc_ts:
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 ;
1276 declspecs_nosc_nots:
1277 declspecs_nosc_nots_nosa_noea
1278 | declspecs_nosc_nots_nosa_ea
1279 | declspecs_nosc_nots_sa_noea
1280 | declspecs_nosc_nots_sa_ea
1281 ;
1283 declspecs_nosc:
1284 declspecs_nosc_ts_nosa_noea
1285 | declspecs_nosc_ts_nosa_ea
1286 | declspecs_nosc_ts_sa_noea
1287 | declspecs_nosc_ts_sa_ea
1288 | declspecs_nosc_nots_nosa_noea
1289 | declspecs_nosc_nots_nosa_ea
1290 | declspecs_nosc_nots_sa_noea
1291 | declspecs_nosc_nots_sa_ea
1292 ;
1294 declspecs:
1295 declspecs_nosc_nots_nosa_noea
1296 | declspecs_nosc_nots_nosa_ea
1297 | declspecs_nosc_nots_sa_noea
1298 | declspecs_nosc_nots_sa_ea
1299 | declspecs_nosc_ts_nosa_noea
1300 | declspecs_nosc_ts_nosa_ea
1301 | declspecs_nosc_ts_sa_noea
1302 | declspecs_nosc_ts_sa_ea
1303 | declspecs_sc_nots_nosa_noea
1304 | declspecs_sc_nots_nosa_ea
1305 | declspecs_sc_nots_sa_noea
1306 | declspecs_sc_nots_sa_ea
1307 | declspecs_sc_ts_nosa_noea
1308 | declspecs_sc_ts_nosa_ea
1309 | declspecs_sc_ts_sa_noea
1310 | declspecs_sc_ts_sa_ea
1311 ;
1313 /* A (possibly empty) sequence of type qualifiers and attributes. */
1314 maybe_type_quals_attrs:
1315 /* empty */
1316 { $$ = NULL_TREE; }
1317 | declspecs_nosc_nots
1318 { $$ = $1; }
1319 ;
1321 /* A type specifier (but not a type qualifier).
1322 Once we have seen one of these in a declaration,
1323 if a typedef name appears then it is being redeclared.
1325 The _reserved versions start with a reserved word and may appear anywhere
1326 in the declaration specifiers; the _nonreserved versions may only
1327 appear before any other type specifiers, and after that are (if names)
1328 being redeclared.
1330 FIXME: should the _nonreserved version be restricted to names being
1331 redeclared only? The other entries there relate only the GNU extensions
1332 and Objective C, and are historically parsed thus, and don't make sense
1333 after other type specifiers, but it might be cleaner to count them as
1334 _reserved.
1336 _attr means: specifiers that either end with attributes,
1337 or are such that any following attributes would
1338 be parsed as part of the specifier.
1340 _nonattr: specifiers. */
1342 typespec_nonattr:
1343 typespec_reserved_nonattr
1344 | typespec_nonreserved_nonattr
1345 ;
1347 typespec_attr:
1348 typespec_reserved_attr
1349 ;
1351 typespec_reserved_nonattr:
1352 TYPESPEC
1353 { OBJC_NEED_RAW_IDENTIFIER (1); }
1354 | structsp_nonattr
1355 ;
1357 typespec_reserved_attr:
1358 structsp_attr
1359 ;
1361 typespec_nonreserved_nonattr:
1362 TYPENAME
1363 { /* For a typedef name, record the meaning, not the name.
1364 In case of `foo foo, bar;'. */
1365 $$ = lookup_name ($1); }
1366 @@ifobjc
1367 | CLASSNAME protocolrefs
1368 { $$ = get_static_reference ($1, $2); }
1369 | OBJECTNAME protocolrefs
1370 { $$ = get_object_reference ($2); }
1372 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1373 - nisse@lysator.liu.se */
1374 | non_empty_protocolrefs
1375 { $$ = get_object_reference ($1); }
1376 @@end_ifobjc
1377 | typeof '(' expr ')'
1378 { skip_evaluation--;
1379 if (TREE_CODE ($3) == COMPONENT_REF
1380 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1381 error ("`typeof' applied to a bit-field");
1382 $$ = TREE_TYPE ($3); }
1383 | typeof '(' typename ')'
1384 { skip_evaluation--; $$ = groktypename ($3); }
1385 ;
1387 /* typespec_nonreserved_attr does not exist. */
1389 initdecls:
1390 initdcl
1391 | initdecls ',' maybe_resetattrs initdcl
1392 ;
1394 notype_initdecls:
1395 notype_initdcl
1396 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1397 ;
1399 maybeasm:
1400 /* empty */
1401 { $$ = NULL_TREE; }
1402 | ASM_KEYWORD '(' STRING ')'
1403 { $$ = $3; }
1404 ;
1406 initdcl:
1407 declarator maybeasm maybe_attribute '='
1408 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1409 chainon ($3, all_prefix_attributes));
1410 start_init ($<ttype>$, $2, global_bindings_p ()); }
1411 init
1412 /* Note how the declaration of the variable is in effect while its init is parsed! */
1413 { finish_init ();
1414 finish_decl ($<ttype>5, $6, $2); }
1415 | declarator maybeasm maybe_attribute
1416 { tree d = start_decl ($1, current_declspecs, 0,
1417 chainon ($3, all_prefix_attributes));
1418 finish_decl (d, NULL_TREE, $2);
1419 }
1420 ;
1422 notype_initdcl:
1423 notype_declarator maybeasm maybe_attribute '='
1424 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1425 chainon ($3, all_prefix_attributes));
1426 start_init ($<ttype>$, $2, global_bindings_p ()); }
1427 init
1428 /* Note how the declaration of the variable is in effect while its init is parsed! */
1429 { finish_init ();
1430 finish_decl ($<ttype>5, $6, $2); }
1431 | notype_declarator maybeasm maybe_attribute
1432 { tree d = start_decl ($1, current_declspecs, 0,
1433 chainon ($3, all_prefix_attributes));
1434 finish_decl (d, NULL_TREE, $2); }
1435 ;
1436 /* the * rules are dummies to accept the Apollo extended syntax
1437 so that the header files compile. */
1438 maybe_attribute:
1439 /* empty */
1440 { $$ = NULL_TREE; }
1441 | attributes
1442 { $$ = $1; }
1443 ;
1445 attributes:
1446 attribute
1447 { $$ = $1; }
1448 | attributes attribute
1449 { $$ = chainon ($1, $2); }
1450 ;
1452 attribute:
1453 ATTRIBUTE '(' '(' attribute_list ')' ')'
1454 { $$ = $4; }
1455 ;
1457 attribute_list:
1458 attrib
1459 { $$ = $1; }
1460 | attribute_list ',' attrib
1461 { $$ = chainon ($1, $3); }
1462 ;
1464 attrib:
1465 /* empty */
1466 { $$ = NULL_TREE; }
1467 | any_word
1468 { $$ = build_tree_list ($1, NULL_TREE); }
1469 | any_word '(' IDENTIFIER ')'
1470 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1471 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1472 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1473 | any_word '(' exprlist ')'
1474 { $$ = build_tree_list ($1, $3); }
1475 ;
1477 /* This still leaves out most reserved keywords,
1478 shouldn't we include them? */
1480 any_word:
1481 identifier
1482 | scspec
1483 | TYPESPEC
1484 | TYPE_QUAL
1485 ;
1487 scspec:
1488 STATIC
1489 | SCSPEC
1490 ;
1491 \f
1492 /* Initializers. `init' is the entry point. */
1494 init:
1495 expr_no_commas
1496 | '{'
1497 { really_start_incremental_init (NULL_TREE); }
1498 initlist_maybe_comma '}'
1499 { $$ = pop_init_level (0); }
1500 | error
1501 { $$ = error_mark_node; }
1502 ;
1504 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1505 initlist_maybe_comma:
1506 /* empty */
1507 { if (pedantic)
1508 pedwarn ("ISO C forbids empty initializer braces"); }
1509 | initlist1 maybecomma
1510 ;
1512 initlist1:
1513 initelt
1514 | initlist1 ',' initelt
1515 ;
1517 /* `initelt' is a single element of an initializer.
1518 It may use braces. */
1519 initelt:
1520 designator_list '=' initval
1521 { if (pedantic && ! flag_isoc99)
1522 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1523 | designator initval
1524 { if (pedantic)
1525 pedwarn ("obsolete use of designated initializer without `='"); }
1526 | identifier ':'
1527 { set_init_label ($1);
1528 if (pedantic)
1529 pedwarn ("obsolete use of designated initializer with `:'"); }
1530 initval
1531 {}
1532 | initval
1533 ;
1535 initval:
1536 '{'
1537 { push_init_level (0); }
1538 initlist_maybe_comma '}'
1539 { process_init_element (pop_init_level (0)); }
1540 | expr_no_commas
1541 { process_init_element ($1); }
1542 | error
1543 ;
1545 designator_list:
1546 designator
1547 | designator_list designator
1548 ;
1550 designator:
1551 '.' identifier
1552 { set_init_label ($2); }
1553 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1554 { set_init_index ($2, $4);
1555 if (pedantic)
1556 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1557 | '[' expr_no_commas ']'
1558 { set_init_index ($2, NULL_TREE); }
1559 ;
1560 \f
1561 nested_function:
1562 declarator
1563 { if (pedantic)
1564 pedwarn ("ISO C forbids nested functions");
1566 push_function_context ();
1567 if (! start_function (current_declspecs, $1,
1568 all_prefix_attributes))
1569 {
1570 pop_function_context ();
1571 YYERROR1;
1572 }
1573 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1574 }
1575 old_style_parm_decls save_location
1576 { tree decl = current_function_decl;
1577 DECL_SOURCE_LOCATION (decl) = $4;
1578 store_parm_decls (); }
1579 /* This used to use compstmt_or_error.
1580 That caused a bug with input `f(g) int g {}',
1581 where the use of YYERROR1 above caused an error
1582 which then was handled by compstmt_or_error.
1583 There followed a repeated execution of that same rule,
1584 which called YYERROR1 again, and so on. */
1585 compstmt
1586 { tree decl = current_function_decl;
1587 finish_function ();
1588 pop_function_context ();
1589 add_decl_stmt (decl); }
1590 ;
1592 notype_nested_function:
1593 notype_declarator
1594 { if (pedantic)
1595 pedwarn ("ISO C forbids nested functions");
1597 push_function_context ();
1598 if (! start_function (current_declspecs, $1,
1599 all_prefix_attributes))
1600 {
1601 pop_function_context ();
1602 YYERROR1;
1603 }
1604 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1605 }
1606 old_style_parm_decls save_location
1607 { tree decl = current_function_decl;
1608 DECL_SOURCE_LOCATION (decl) = $4;
1609 store_parm_decls (); }
1610 /* This used to use compstmt_or_error.
1611 That caused a bug with input `f(g) int g {}',
1612 where the use of YYERROR1 above caused an error
1613 which then was handled by compstmt_or_error.
1614 There followed a repeated execution of that same rule,
1615 which called YYERROR1 again, and so on. */
1616 compstmt
1617 { tree decl = current_function_decl;
1618 finish_function ();
1619 pop_function_context ();
1620 add_decl_stmt (decl); }
1621 ;
1623 /* Any kind of declarator (thus, all declarators allowed
1624 after an explicit typespec). */
1626 declarator:
1627 after_type_declarator
1628 | notype_declarator
1629 ;
1631 /* A declarator that is allowed only after an explicit typespec. */
1633 after_type_declarator:
1634 '(' maybe_attribute after_type_declarator ')'
1635 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1636 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1637 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1638 /* | after_type_declarator '(' error ')' %prec '.'
1639 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1640 poplevel (0, 0, 0); } */
1641 | after_type_declarator array_declarator %prec '.'
1642 { $$ = set_array_declarator_type ($2, $1, 0); }
1643 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1644 { $$ = make_pointer_declarator ($2, $3); }
1645 | TYPENAME
1646 @@ifobjc
1647 | OBJECTNAME
1648 @@end_ifobjc
1649 ;
1651 /* Kinds of declarator that can appear in a parameter list
1652 in addition to notype_declarator. This is like after_type_declarator
1653 but does not allow a typedef name in parentheses as an identifier
1654 (because it would conflict with a function with that typedef as arg). */
1655 parm_declarator:
1656 parm_declarator_starttypename
1657 | parm_declarator_nostarttypename
1658 ;
1660 parm_declarator_starttypename:
1661 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1662 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1663 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1664 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1665 poplevel (0, 0, 0); } */
1666 | parm_declarator_starttypename array_declarator %prec '.'
1667 { $$ = set_array_declarator_type ($2, $1, 0); }
1668 | TYPENAME
1669 @@ifobjc
1670 | OBJECTNAME
1671 @@end_ifobjc
1672 ;
1674 parm_declarator_nostarttypename:
1675 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1676 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1677 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1678 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1679 poplevel (0, 0, 0); } */
1680 | parm_declarator_nostarttypename array_declarator %prec '.'
1681 { $$ = set_array_declarator_type ($2, $1, 0); }
1682 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1683 { $$ = make_pointer_declarator ($2, $3); }
1684 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1685 { $$ = make_pointer_declarator ($2, $3); }
1686 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1687 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1688 ;
1690 /* A declarator allowed whether or not there has been
1691 an explicit typespec. These cannot redeclare a typedef-name. */
1693 notype_declarator:
1694 notype_declarator '(' parmlist_or_identifiers %prec '.'
1695 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1696 /* | notype_declarator '(' error ')' %prec '.'
1697 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1698 poplevel (0, 0, 0); } */
1699 | '(' maybe_attribute notype_declarator ')'
1700 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1701 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1702 { $$ = make_pointer_declarator ($2, $3); }
1703 | notype_declarator array_declarator %prec '.'
1704 { $$ = set_array_declarator_type ($2, $1, 0); }
1705 | IDENTIFIER
1706 ;
1708 struct_head:
1709 STRUCT
1710 { $$ = NULL_TREE; }
1711 | STRUCT attributes
1712 { $$ = $2; }
1713 ;
1715 union_head:
1716 UNION
1717 { $$ = NULL_TREE; }
1718 | UNION attributes
1719 { $$ = $2; }
1720 ;
1722 enum_head:
1723 ENUM
1724 { $$ = NULL_TREE; }
1725 | ENUM attributes
1726 { $$ = $2; }
1727 ;
1729 /* structsp_attr: struct/union/enum specifiers that either
1730 end with attributes, or are such that any following attributes would
1731 be parsed as part of the struct/union/enum specifier.
1733 structsp_nonattr: other struct/union/enum specifiers. */
1735 structsp_attr:
1736 struct_head identifier '{'
1737 { $$ = start_struct (RECORD_TYPE, $2);
1738 /* Start scope of tag before parsing components. */
1739 }
1740 component_decl_list '}' maybe_attribute
1741 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1742 chainon ($1, $7)); }
1743 | struct_head '{' component_decl_list '}' maybe_attribute
1744 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1745 nreverse ($3), chainon ($1, $5));
1746 }
1747 | union_head identifier '{'
1748 { $$ = start_struct (UNION_TYPE, $2); }
1749 component_decl_list '}' maybe_attribute
1750 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1751 chainon ($1, $7)); }
1752 | union_head '{' component_decl_list '}' maybe_attribute
1753 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1754 nreverse ($3), chainon ($1, $5));
1755 }
1756 | enum_head identifier '{'
1757 { $$ = start_enum ($2); }
1758 enumlist maybecomma_warn '}' maybe_attribute
1759 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1760 chainon ($1, $8)); }
1761 | enum_head '{'
1762 { $$ = start_enum (NULL_TREE); }
1763 enumlist maybecomma_warn '}' maybe_attribute
1764 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1765 chainon ($1, $7)); }
1766 ;
1768 structsp_nonattr:
1769 struct_head identifier
1770 { $$ = xref_tag (RECORD_TYPE, $2); }
1771 | union_head identifier
1772 { $$ = xref_tag (UNION_TYPE, $2); }
1773 | enum_head identifier
1774 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1775 /* In ISO C, enumerated types can be referred to
1776 only if already defined. */
1777 if (pedantic && !COMPLETE_TYPE_P ($$))
1778 pedwarn ("ISO C forbids forward references to `enum' types"); }
1779 ;
1781 maybecomma:
1782 /* empty */
1783 | ','
1784 ;
1786 maybecomma_warn:
1787 /* empty */
1788 | ','
1789 { if (pedantic && ! flag_isoc99)
1790 pedwarn ("comma at end of enumerator list"); }
1791 ;
1793 /* We chain the components in reverse order. They are put in forward
1794 order in structsp_attr.
1796 Note that component_declarator returns single decls, so components
1797 and components_notype can use TREE_CHAIN directly, wheras components
1798 and components_notype return lists (of comma separated decls), so
1799 component_decl_list and component_decl_list2 must use chainon.
1801 The theory behind all this is that there will be more semicolon
1802 separated fields than comma separated fields, and so we'll be
1803 minimizing the number of node traversals required by chainon. */
1805 component_decl_list:
1806 component_decl_list2
1807 { $$ = $1; }
1808 | component_decl_list2 component_decl
1809 { $$ = chainon ($2, $1);
1810 pedwarn ("no semicolon at end of struct or union"); }
1811 ;
1813 component_decl_list2: /* empty */
1814 { $$ = NULL_TREE; }
1815 | component_decl_list2 component_decl ';'
1816 { $$ = chainon ($2, $1); }
1817 | component_decl_list2 ';'
1818 { if (pedantic)
1819 pedwarn ("extra semicolon in struct or union specified"); }
1820 @@ifobjc
1821 /* foo(sizeof(struct{ @defs(ClassName)})); */
1822 | DEFS '(' CLASSNAME ')'
1823 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1824 @@end_ifobjc
1825 ;
1827 component_decl:
1828 declspecs_nosc_ts setspecs components
1829 { $$ = $3;
1830 POP_DECLSPEC_STACK; }
1831 | declspecs_nosc_ts setspecs
1832 {
1833 /* Support for unnamed structs or unions as members of
1834 structs or unions (which is [a] useful and [b] supports
1835 MS P-SDK). */
1836 if (pedantic)
1837 pedwarn ("ISO C doesn't support unnamed structs/unions");
1839 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1840 POP_DECLSPEC_STACK; }
1841 | declspecs_nosc_nots setspecs components_notype
1842 { $$ = $3;
1843 POP_DECLSPEC_STACK; }
1844 | declspecs_nosc_nots
1845 { if (pedantic)
1846 pedwarn ("ISO C forbids member declarations with no members");
1847 shadow_tag_warned ($1, pedantic);
1848 $$ = NULL_TREE; }
1849 | error
1850 { $$ = NULL_TREE; }
1851 | extension component_decl
1852 { $$ = $2;
1853 RESTORE_EXT_FLAGS ($1); }
1854 ;
1856 components:
1857 component_declarator
1858 | components ',' maybe_resetattrs component_declarator
1859 { TREE_CHAIN ($4) = $1; $$ = $4; }
1860 ;
1862 components_notype:
1863 component_notype_declarator
1864 | components_notype ',' maybe_resetattrs component_notype_declarator
1865 { TREE_CHAIN ($4) = $1; $$ = $4; }
1866 ;
1868 component_declarator:
1869 declarator maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1871 decl_attributes (&$$,
1872 chainon ($2, all_prefix_attributes), 0); }
1873 | declarator ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield ($1, current_declspecs, $3);
1875 decl_attributes (&$$,
1876 chainon ($4, all_prefix_attributes), 0); }
1877 | ':' expr_no_commas maybe_attribute
1878 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1879 decl_attributes (&$$,
1880 chainon ($3, all_prefix_attributes), 0); }
1881 ;
1883 component_notype_declarator:
1884 notype_declarator maybe_attribute
1885 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1886 decl_attributes (&$$,
1887 chainon ($2, all_prefix_attributes), 0); }
1888 | notype_declarator ':' expr_no_commas maybe_attribute
1889 { $$ = grokfield ($1, current_declspecs, $3);
1890 decl_attributes (&$$,
1891 chainon ($4, all_prefix_attributes), 0); }
1892 | ':' expr_no_commas maybe_attribute
1893 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1894 decl_attributes (&$$,
1895 chainon ($3, all_prefix_attributes), 0); }
1896 ;
1898 /* We chain the enumerators in reverse order.
1899 They are put in forward order in structsp_attr. */
1901 enumlist:
1902 enumerator
1903 | enumlist ',' enumerator
1904 { if ($1 == error_mark_node)
1905 $$ = $1;
1906 else
1907 TREE_CHAIN ($3) = $1, $$ = $3; }
1908 | error
1909 { $$ = error_mark_node; }
1910 ;
1913 enumerator:
1914 identifier
1915 { $$ = build_enumerator ($1, NULL_TREE); }
1916 | identifier '=' expr_no_commas
1917 { $$ = build_enumerator ($1, $3); }
1918 ;
1920 typename:
1921 declspecs_nosc
1922 { pending_xref_error ();
1923 $<ttype>$ = $1; }
1924 absdcl
1925 { $$ = build_tree_list ($<ttype>2, $3); }
1926 ;
1928 absdcl: /* an absolute declarator */
1929 /* empty */
1930 { $$ = NULL_TREE; }
1931 | absdcl1
1932 ;
1934 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1935 /* empty */
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1937 NULL_TREE),
1938 all_prefix_attributes); }
1939 | absdcl1
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1941 $1),
1942 all_prefix_attributes); }
1943 | absdcl1_noea attributes
1944 { $$ = build_tree_list (build_tree_list (current_declspecs,
1945 $1),
1946 chainon ($2, all_prefix_attributes)); }
1947 ;
1949 absdcl1: /* a nonempty absolute declarator */
1950 absdcl1_ea
1951 | absdcl1_noea
1952 ;
1954 absdcl1_noea:
1955 direct_absdcl1
1956 | '*' maybe_type_quals_attrs absdcl1_noea
1957 { $$ = make_pointer_declarator ($2, $3); }
1958 ;
1960 absdcl1_ea:
1961 '*' maybe_type_quals_attrs
1962 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1963 | '*' maybe_type_quals_attrs absdcl1_ea
1964 { $$ = make_pointer_declarator ($2, $3); }
1965 ;
1967 direct_absdcl1:
1968 '(' maybe_attribute absdcl1 ')'
1969 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1970 | direct_absdcl1 '(' parmlist
1971 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1972 | direct_absdcl1 array_declarator
1973 { $$ = set_array_declarator_type ($2, $1, 1); }
1974 | '(' parmlist
1975 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1976 | array_declarator
1977 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1978 ;
1980 /* The [...] part of a declarator for an array type. */
1982 array_declarator:
1983 '[' maybe_type_quals_attrs expr_no_commas ']'
1984 { $$ = build_array_declarator ($3, $2, 0, 0); }
1985 | '[' maybe_type_quals_attrs ']'
1986 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1987 | '[' maybe_type_quals_attrs '*' ']'
1988 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1989 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1990 { $$ = build_array_declarator ($4, $3, 1, 0); }
1991 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1992 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1993 { $$ = build_array_declarator ($4, $2, 1, 0); }
1994 ;
1996 /* A nonempty series of declarations and statements (possibly followed by
1997 some labels) that can form the body of a compound statement.
1998 NOTE: we don't allow labels on declarations; this might seem like a
1999 natural extension, but there would be a conflict between attributes
2000 on the label and prefix attributes on the declaration. */
2002 stmts_and_decls:
2003 lineno_stmt_decl_or_labels_ending_stmt
2004 | lineno_stmt_decl_or_labels_ending_decl
2005 | lineno_stmt_decl_or_labels_ending_label
2006 {
2007 pedwarn ("deprecated use of label at end of compound statement");
2008 }
2009 | lineno_stmt_decl_or_labels_ending_error
2010 ;
2012 lineno_stmt_decl_or_labels_ending_stmt:
2013 lineno_stmt
2014 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2015 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2016 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2017 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2018 ;
2020 lineno_stmt_decl_or_labels_ending_decl:
2021 lineno_decl
2022 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2023 {
2024 if ((pedantic && !flag_isoc99)
2025 || warn_declaration_after_statement)
2026 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2027 }
2028 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2029 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2030 ;
2032 lineno_stmt_decl_or_labels_ending_label:
2033 lineno_label
2034 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2035 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2036 | lineno_stmt_decl_or_labels_ending_label lineno_label
2037 | lineno_stmt_decl_or_labels_ending_error lineno_label
2038 ;
2040 lineno_stmt_decl_or_labels_ending_error:
2041 errstmt
2042 | lineno_stmt_decl_or_labels errstmt
2043 ;
2045 lineno_stmt_decl_or_labels:
2046 lineno_stmt_decl_or_labels_ending_stmt
2047 | lineno_stmt_decl_or_labels_ending_decl
2048 | lineno_stmt_decl_or_labels_ending_label
2049 | lineno_stmt_decl_or_labels_ending_error
2050 ;
2052 errstmt: error ';'
2053 ;
2055 pushlevel: /* empty */
2056 { pushlevel (0);
2057 clear_last_expr ();
2058 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2059 }
2060 ;
2062 poplevel: /* empty */
2063 {
2064 @@ifobjc
2065 if (c_dialect_objc ())
2066 objc_clear_super_receiver ();
2067 @@end_ifobjc
2068 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2069 }
2070 ;
2072 /* Start and end blocks created for the new scopes of C99. */
2073 c99_block_start: /* empty */
2074 { if (flag_isoc99)
2075 {
2076 $$ = c_begin_compound_stmt ();
2077 pushlevel (0);
2078 clear_last_expr ();
2079 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2080 }
2081 else
2082 $$ = NULL_TREE;
2083 }
2084 ;
2086 /* Productions using c99_block_start and c99_block_end will need to do what's
2087 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2088 $1 is the value of c99_block_start and $2 of c99_block_end. */
2089 c99_block_end: /* empty */
2090 { if (flag_isoc99)
2091 {
2092 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2093 $$ = poplevel (KEEP_MAYBE, 0, 0);
2094 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2095 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2096 = $$;
2097 }
2098 else
2099 $$ = NULL_TREE; }
2100 ;
2102 /* Read zero or more forward-declarations for labels
2103 that nested functions can jump to. */
2104 maybe_label_decls:
2105 /* empty */
2106 | label_decls
2107 { if (pedantic)
2108 pedwarn ("ISO C forbids label declarations"); }
2109 ;
2111 label_decls:
2112 label_decl
2113 | label_decls label_decl
2114 ;
2116 label_decl:
2117 LABEL identifiers_or_typenames ';'
2118 { tree link;
2119 for (link = $2; link; link = TREE_CHAIN (link))
2120 {
2121 tree label = declare_label (TREE_VALUE (link));
2122 C_DECLARED_LABEL_FLAG (label) = 1;
2123 add_decl_stmt (label);
2124 }
2125 }
2126 ;
2128 /* This is the body of a function definition.
2129 It causes syntax errors to ignore to the next openbrace. */
2130 compstmt_or_error:
2131 compstmt
2132 {}
2133 | error compstmt
2134 ;
2136 compstmt_start: '{' { compstmt_count++;
2137 $$ = c_begin_compound_stmt (); }
2138 ;
2140 compstmt_nostart: '}'
2141 { $$ = convert (void_type_node, integer_zero_node); }
2142 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2143 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2144 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2145 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2146 = $$; }
2147 ;
2149 compstmt_contents_nonempty:
2150 stmts_and_decls
2151 | error
2152 ;
2154 compstmt_primary_start:
2155 '(' '{'
2156 { if (current_function_decl == 0)
2157 {
2158 error ("braced-group within expression allowed only inside a function");
2159 YYERROR;
2160 }
2161 /* We must force a BLOCK for this level
2162 so that, if it is not expanded later,
2163 there is a way to turn off the entire subtree of blocks
2164 that are contained in it. */
2165 keep_next_level ();
2166 compstmt_count++;
2167 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2168 }
2169 ;
2171 compstmt: compstmt_start compstmt_nostart
2172 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2173 last_expr_type = NULL_TREE;
2174 $$ = $1; }
2175 ;
2177 /* Value is number of statements counted as of the closeparen. */
2178 simple_if:
2179 if_prefix c99_block_lineno_labeled_stmt
2180 { c_finish_then (); }
2181 /* Make sure c_expand_end_cond is run once
2182 for each call to c_expand_start_cond.
2183 Otherwise a crash is likely. */
2184 | if_prefix error
2185 ;
2187 if_prefix:
2188 /* We must build the IF_STMT node before parsing its
2189 condition so that STMT_LINENO refers to the line
2190 containing the "if", and not the line containing
2191 the close-parenthesis.
2193 c_begin_if_stmt returns the IF_STMT node, which
2194 we later pass to c_expand_start_cond to fill
2195 in the condition and other tidbits. */
2196 IF
2197 { $<ttype>$ = c_begin_if_stmt (); }
2198 '(' expr ')'
2199 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2200 compstmt_count,$<ttype>2);
2201 $<itype>$ = stmt_count;
2202 if_stmt_locus = $<location>-1; }
2203 ;
2205 /* This is a subroutine of stmt.
2206 It is used twice, once for valid DO statements
2207 and once for catching errors in parsing the end test. */
2208 do_stmt_start:
2209 DO
2210 { stmt_count++;
2211 compstmt_count++;
2212 c_in_iteration_stmt++;
2213 $<ttype>$
2214 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2215 NULL_TREE));
2216 /* In the event that a parse error prevents
2217 parsing the complete do-statement, set the
2218 condition now. Otherwise, we can get crashes at
2219 RTL-generation time. */
2220 DO_COND ($<ttype>$) = error_mark_node; }
2221 c99_block_lineno_labeled_stmt WHILE
2222 { $$ = $<ttype>2;
2223 RECHAIN_STMTS ($$, DO_BODY ($$));
2224 c_in_iteration_stmt--; }
2225 ;
2227 /* The forced readahead in here is because we might be at the end of a
2228 line, and the line and file won't be bumped until yylex absorbs the
2229 first token on the next line. */
2231 save_location:
2232 { if (yychar == YYEMPTY)
2233 yychar = YYLEX;
2234 $$ = input_location; }
2235 ;
2237 lineno_labeled_stmt:
2238 lineno_stmt
2239 | lineno_label lineno_labeled_stmt
2240 ;
2242 /* Like lineno_labeled_stmt, but a block in C99. */
2243 c99_block_lineno_labeled_stmt:
2244 c99_block_start lineno_labeled_stmt c99_block_end
2245 { if (flag_isoc99)
2246 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2247 ;
2249 lineno_stmt:
2250 save_location stmt
2251 { if ($2)
2252 {
2253 STMT_LINENO ($2) = $1.line;
2254 /* ??? We currently have no way of recording
2255 the filename for a statement. This probably
2256 matters little in practice at the moment,
2257 but I suspect that problems will occur when
2258 doing inlining at the tree level. */
2259 }
2260 }
2261 ;
2263 lineno_label:
2264 save_location label
2265 { if ($2)
2266 {
2267 STMT_LINENO ($2) = $1.line;
2268 }
2269 }
2270 ;
2272 select_or_iter_stmt:
2273 simple_if ELSE
2274 { c_expand_start_else ();
2275 $<itype>1 = stmt_count; }
2276 c99_block_lineno_labeled_stmt
2277 { c_finish_else ();
2278 c_expand_end_cond ();
2279 if (extra_warnings && stmt_count == $<itype>1)
2280 warning ("empty body in an else-statement"); }
2281 | simple_if %prec IF
2282 { c_expand_end_cond ();
2283 /* This warning is here instead of in simple_if, because we
2284 do not want a warning if an empty if is followed by an
2285 else statement. Increment stmt_count so we don't
2286 give a second error if this is a nested `if'. */
2287 if (extra_warnings && stmt_count++ == $<itype>1)
2288 warning ("%Hempty body in an if-statement",
2289 &if_stmt_locus); }
2290 /* Make sure c_expand_end_cond is run once
2291 for each call to c_expand_start_cond.
2292 Otherwise a crash is likely. */
2293 | simple_if ELSE error
2294 { c_expand_end_cond (); }
2295 /* We must build the WHILE_STMT node before parsing its
2296 condition so that STMT_LINENO refers to the line
2297 containing the "while", and not the line containing
2298 the close-parenthesis.
2300 c_begin_while_stmt returns the WHILE_STMT node, which
2301 we later pass to c_finish_while_stmt_cond to fill
2302 in the condition and other tidbits. */
2303 | WHILE
2304 { stmt_count++;
2305 $<ttype>$ = c_begin_while_stmt (); }
2306 '(' expr ')'
2307 { c_in_iteration_stmt++;
2308 $4 = c_common_truthvalue_conversion ($4);
2309 c_finish_while_stmt_cond
2310 (c_common_truthvalue_conversion ($4), $<ttype>2);
2311 $<ttype>$ = add_stmt ($<ttype>2); }
2312 c99_block_lineno_labeled_stmt
2313 { c_in_iteration_stmt--;
2314 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2315 | do_stmt_start
2316 '(' expr ')' ';'
2317 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2318 | do_stmt_start error
2319 { }
2320 | FOR
2321 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2322 NULL_TREE, NULL_TREE);
2323 add_stmt ($<ttype>$); }
2324 '(' for_init_stmt
2325 { stmt_count++;
2326 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2327 xexpr ';'
2328 { if ($6)
2329 FOR_COND ($<ttype>2)
2330 = c_common_truthvalue_conversion ($6); }
2331 xexpr ')'
2332 { c_in_iteration_stmt++;
2333 FOR_EXPR ($<ttype>2) = $9; }
2334 c99_block_lineno_labeled_stmt
2335 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2336 c_in_iteration_stmt--;}
2337 | SWITCH '(' expr ')'
2338 { stmt_count++;
2339 $<ttype>$ = c_start_case ($3);
2340 c_in_case_stmt++; }
2341 c99_block_lineno_labeled_stmt
2342 { c_finish_case ();
2343 c_in_case_stmt--; }
2344 ;
2346 for_init_stmt:
2347 xexpr ';'
2348 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2349 | decl
2350 { check_for_loop_decls (); }
2351 ;
2353 /* Parse a single real statement, not including any labels. */
2354 stmt:
2355 compstmt
2356 { stmt_count++; $$ = $1; }
2357 | expr ';'
2358 { stmt_count++;
2359 $$ = c_expand_expr_stmt ($1); }
2360 | c99_block_start select_or_iter_stmt c99_block_end
2361 { if (flag_isoc99)
2362 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2363 $$ = NULL_TREE; }
2364 | BREAK ';'
2365 { stmt_count++;
2366 if (!(c_in_iteration_stmt || c_in_case_stmt))
2367 {
2368 error ("break statement not within loop or switch");
2369 $$ = NULL_TREE;
2370 }
2371 else
2372 $$ = add_stmt (build_break_stmt ()); }
2373 | CONTINUE ';'
2374 { stmt_count++;
2375 if (!c_in_iteration_stmt)
2376 {
2377 error ("continue statement not within a loop");
2378 $$ = NULL_TREE;
2379 }
2380 else
2381 $$ = add_stmt (build_continue_stmt ()); }
2382 | RETURN ';'
2383 { stmt_count++;
2384 $$ = c_expand_return (NULL_TREE); }
2385 | RETURN expr ';'
2386 { stmt_count++;
2387 $$ = c_expand_return ($2); }
2388 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2389 { stmt_count++;
2390 $$ = simple_asm_stmt ($4); }
2391 /* This is the case with just output operands. */
2392 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2393 { stmt_count++;
2394 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2395 /* This is the case with input operands as well. */
2396 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2397 asm_operands ')' ';'
2398 { stmt_count++;
2399 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2400 /* This is the case with clobbered registers as well. */
2401 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2402 asm_operands ':' asm_clobbers ')' ';'
2403 { stmt_count++;
2404 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2405 | GOTO identifier ';'
2406 { tree decl;
2407 stmt_count++;
2408 decl = lookup_label ($2);
2409 if (decl != 0)
2410 {
2411 TREE_USED (decl) = 1;
2412 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2413 }
2414 else
2415 $$ = NULL_TREE;
2416 }
2417 | GOTO '*' expr ';'
2418 { if (pedantic)
2419 pedwarn ("ISO C forbids `goto *expr;'");
2420 stmt_count++;
2421 $3 = convert (ptr_type_node, $3);
2422 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2423 | ';'
2424 { $$ = NULL_TREE; }
2425 @@ifobjc
2426 | AT_THROW expr ';'
2427 { stmt_count++;
2428 $$ = objc_build_throw_stmt ($2);
2429 }
2430 | AT_THROW ';'
2431 { stmt_count++;
2432 $$ = objc_build_throw_stmt (NULL_TREE);
2433 }
2434 | objc_try_catch_stmt
2435 { objc_build_finally_prologue (); }
2436 objc_finally_block
2437 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2438 | AT_SYNCHRONIZED '(' expr ')'
2439 { objc_build_synchronized_prologue ($3); }
2440 compstmt
2441 { $$ = objc_build_synchronized_epilogue (); }
2442 ;
2444 objc_try_catch_stmt:
2445 objc_try_stmt
2446 { objc_build_try_epilogue (1); }
2447 objc_catch_list
2448 { objc_build_catch_epilogue (); $$ = 1; }
2449 | objc_try_stmt
2450 { objc_build_try_epilogue (0); $$ = 0; }
2451 ;
2454 objc_try_stmt:
2455 AT_TRY
2456 { objc_build_try_prologue (); }
2457 compstmt
2458 ;
2460 objc_catch_list:
2461 objc_catch_list objc_catch_block
2462 | objc_catch_block
2463 ;
2465 objc_catch_block:
2466 AT_CATCH '(' parm ')'
2467 { objc_build_catch_stmt ($3); }
2468 compstmt
2469 { stmt_count++; }
2470 ;
2472 objc_finally_block:
2473 AT_FINALLY compstmt
2474 { $$ = 1; }
2475 | /* NULL */
2476 { $$ = 0; }
2477 @@end_ifobjc
2478 ;
2480 /* Any kind of label, including jump labels and case labels.
2481 ANSI C accepts labels only before statements, but we allow them
2482 also at the end of a compound statement. */
2484 label: CASE expr_no_commas ':'
2485 { stmt_count++;
2486 $$ = do_case ($2, NULL_TREE); }
2487 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2488 { stmt_count++;
2489 $$ = do_case ($2, $4); }
2490 | DEFAULT ':'
2491 { stmt_count++;
2492 $$ = do_case (NULL_TREE, NULL_TREE); }
2493 | identifier save_location ':' maybe_attribute
2494 { tree label = define_label ($2, $1);
2495 stmt_count++;
2496 if (label)
2497 {
2498 decl_attributes (&label, $4, 0);
2499 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2500 }
2501 else
2502 $$ = NULL_TREE;
2503 }
2504 ;
2506 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2508 maybe_type_qual:
2509 /* empty */
2510 { emit_line_note (input_location);
2511 $$ = NULL_TREE; }
2512 | TYPE_QUAL
2513 { emit_line_note (input_location); }
2514 ;
2516 xexpr:
2517 /* empty */
2518 { $$ = NULL_TREE; }
2519 | expr
2520 ;
2522 /* These are the operands other than the first string and colon
2523 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2524 asm_operands: /* empty */
2525 { $$ = NULL_TREE; }
2526 | nonnull_asm_operands
2527 ;
2529 nonnull_asm_operands:
2530 asm_operand
2531 | nonnull_asm_operands ',' asm_operand
2532 { $$ = chainon ($1, $3); }
2533 ;
2535 asm_operand:
2536 STRING '(' expr ')'
2537 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2538 | '[' identifier ']' STRING '(' expr ')'
2539 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2540 IDENTIFIER_POINTER ($2));
2541 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2542 ;
2544 asm_clobbers:
2545 STRING
2546 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2547 | asm_clobbers ',' STRING
2548 { $$ = tree_cons (NULL_TREE, $3, $1); }
2549 ;
2550 \f
2551 /* This is what appears inside the parens in a function declarator.
2552 Its value is a list of ..._TYPE nodes. Attributes must appear here
2553 to avoid a conflict with their appearance after an open parenthesis
2554 in an abstract declarator, as in
2555 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2556 parmlist:
2557 maybe_attribute
2558 { pushlevel (0);
2559 declare_parm_level (); }
2560 parmlist_1
2561 { $$ = $3;
2562 poplevel (0, 0, 0); }
2563 ;
2565 parmlist_1:
2566 parmlist_2 ')'
2567 | parms ';'
2568 { mark_forward_parm_decls (); }
2569 maybe_attribute
2570 { /* Dummy action so attributes are in known place
2571 on parser stack. */ }
2572 parmlist_1
2573 { $$ = $6; }
2574 | error ')'
2575 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2576 ;
2578 /* This is what appears inside the parens in a function declarator.
2579 Is value is represented in the format that grokdeclarator expects. */
2580 parmlist_2: /* empty */
2581 { $$ = get_parm_info (0); }
2582 | ELLIPSIS
2583 { $$ = get_parm_info (0);
2584 /* Gcc used to allow this as an extension. However, it does
2585 not work for all targets, and thus has been disabled.
2586 Also, since func (...) and func () are indistinguishable,
2587 it caused problems with the code in expand_builtin which
2588 tries to verify that BUILT_IN_NEXT_ARG is being used
2589 correctly. */
2590 error ("ISO C requires a named argument before `...'");
2591 parsing_iso_function_signature = true;
2592 }
2593 | parms
2594 { $$ = get_parm_info (1);
2595 parsing_iso_function_signature = true;
2596 }
2597 | parms ',' ELLIPSIS
2598 { $$ = get_parm_info (0);
2599 parsing_iso_function_signature = true;
2600 }
2601 ;
2603 parms:
2604 firstparm
2605 { push_parm_decl ($1); }
2606 | parms ',' parm
2607 { push_parm_decl ($3); }
2608 ;
2610 /* A single parameter declaration or parameter type name,
2611 as found in a parmlist. */
2612 parm:
2613 declspecs_ts setspecs parm_declarator maybe_attribute
2614 { $$ = build_tree_list (build_tree_list (current_declspecs,
2615 $3),
2616 chainon ($4, all_prefix_attributes));
2617 POP_DECLSPEC_STACK; }
2618 | declspecs_ts setspecs notype_declarator maybe_attribute
2619 { $$ = build_tree_list (build_tree_list (current_declspecs,
2620 $3),
2621 chainon ($4, all_prefix_attributes));
2622 POP_DECLSPEC_STACK; }
2623 | declspecs_ts setspecs absdcl_maybe_attribute
2624 { $$ = $3;
2625 POP_DECLSPEC_STACK; }
2626 | declspecs_nots setspecs notype_declarator maybe_attribute
2627 { $$ = build_tree_list (build_tree_list (current_declspecs,
2628 $3),
2629 chainon ($4, all_prefix_attributes));
2630 POP_DECLSPEC_STACK; }
2632 | declspecs_nots setspecs absdcl_maybe_attribute
2633 { $$ = $3;
2634 POP_DECLSPEC_STACK; }
2635 ;
2637 /* The first parm, which must suck attributes from off the top of the parser
2638 stack. */
2639 firstparm:
2640 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2641 { $$ = build_tree_list (build_tree_list (current_declspecs,
2642 $3),
2643 chainon ($4, all_prefix_attributes));
2644 POP_DECLSPEC_STACK; }
2645 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2646 { $$ = build_tree_list (build_tree_list (current_declspecs,
2647 $3),
2648 chainon ($4, all_prefix_attributes));
2649 POP_DECLSPEC_STACK; }
2650 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2651 { $$ = $3;
2652 POP_DECLSPEC_STACK; }
2653 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2654 { $$ = build_tree_list (build_tree_list (current_declspecs,
2655 $3),
2656 chainon ($4, all_prefix_attributes));
2657 POP_DECLSPEC_STACK; }
2659 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2660 { $$ = $3;
2661 POP_DECLSPEC_STACK; }
2662 ;
2664 setspecs_fp:
2665 setspecs
2666 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2667 all_prefix_attributes = prefix_attributes; }
2668 ;
2670 /* This is used in a function definition
2671 where either a parmlist or an identifier list is ok.
2672 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2673 parmlist_or_identifiers:
2674 maybe_attribute
2675 { pushlevel (0);
2676 declare_parm_level (); }
2677 parmlist_or_identifiers_1
2678 { $$ = $3;
2679 poplevel (0, 0, 0); }
2680 ;
2682 parmlist_or_identifiers_1:
2683 parmlist_1
2684 | identifiers ')'
2685 { tree t;
2686 for (t = $1; t; t = TREE_CHAIN (t))
2687 if (TREE_VALUE (t) == NULL_TREE)
2688 error ("`...' in old-style identifier list");
2689 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2691 /* Make sure we have a parmlist after attributes. */
2692 if ($<ttype>-1 != 0
2693 && (TREE_CODE ($$) != TREE_LIST
2694 || TREE_PURPOSE ($$) == 0
2695 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2696 YYERROR1;
2697 }
2698 ;
2700 /* A nonempty list of identifiers. */
2701 identifiers:
2702 IDENTIFIER
2703 { $$ = build_tree_list (NULL_TREE, $1); }
2704 | identifiers ',' IDENTIFIER
2705 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2706 ;
2708 /* A nonempty list of identifiers, including typenames. */
2709 identifiers_or_typenames:
2710 identifier
2711 { $$ = build_tree_list (NULL_TREE, $1); }
2712 | identifiers_or_typenames ',' identifier
2713 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2714 ;
2716 extension:
2717 EXTENSION
2718 { $$ = SAVE_EXT_FLAGS();
2719 pedantic = 0;
2720 warn_pointer_arith = 0;
2721 warn_traditional = 0;
2722 flag_iso = 0; }
2723 ;
2724 \f
2725 @@ifobjc
2726 /* Objective-C productions. */
2728 objcdef:
2729 classdef
2730 | classdecl
2731 | aliasdecl
2732 | protocoldef
2733 | methoddef
2734 | END
2735 {
2736 if (objc_implementation_context)
2737 {
2738 finish_class (objc_implementation_context);
2739 objc_ivar_chain = NULL_TREE;
2740 objc_implementation_context = NULL_TREE;
2741 }
2742 else
2743 warning ("`@end' must appear in an implementation context");
2744 }
2745 ;
2747 /* A nonempty list of identifiers. */
2748 identifier_list:
2749 identifier
2750 { $$ = build_tree_list (NULL_TREE, $1); }
2751 | identifier_list ',' identifier
2752 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2753 ;
2755 classdecl:
2756 CLASS identifier_list ';'
2757 {
2758 objc_declare_class ($2);
2759 }
2760 ;
2762 aliasdecl:
2763 ALIAS identifier identifier ';'
2764 {
2765 objc_declare_alias ($2, $3);
2766 }
2767 ;
2769 superclass:
2770 ':' identifier { $$ = $2; }
2771 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2772 ;
2774 class_ivars:
2775 '{' ivar_decl_list '}'
2776 | /* NULL */
2777 ;
2779 classdef:
2780 INTERFACE identifier superclass protocolrefs
2781 {
2782 objc_interface_context = objc_ivar_context
2783 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2784 objc_public_flag = 0;
2785 }
2786 class_ivars
2787 {
2788 continue_class (objc_interface_context);
2789 }
2790 methodprotolist END
2791 {
2792 finish_class (objc_interface_context);
2793 objc_interface_context = NULL_TREE;
2794 }
2796 | IMPLEMENTATION identifier superclass
2797 {
2798 objc_implementation_context = objc_ivar_context
2799 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2800 objc_public_flag = 0;
2801 }
2802 class_ivars
2803 {
2804 objc_ivar_chain
2805 = continue_class (objc_implementation_context);
2806 }
2808 | INTERFACE identifier '(' identifier ')' protocolrefs
2809 {
2810 objc_interface_context
2811 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2812 continue_class (objc_interface_context);
2813 }
2814 methodprotolist END
2815 {
2816 finish_class (objc_interface_context);
2817 objc_interface_context = NULL_TREE;
2818 }
2820 | IMPLEMENTATION identifier '(' identifier ')'
2821 {
2822 objc_implementation_context
2823 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2824 objc_ivar_chain
2825 = continue_class (objc_implementation_context);
2826 }
2827 ;
2829 protocoldef:
2830 PROTOCOL identifier protocolrefs
2831 {
2832 objc_pq_context = 1;
2833 objc_interface_context
2834 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2835 }
2836 methodprotolist END
2837 {
2838 objc_pq_context = 0;
2839 finish_protocol(objc_interface_context);
2840 objc_interface_context = NULL_TREE;
2841 }
2842 /* The @protocol forward-declaration production introduces a
2843 reduce/reduce conflict on ';', which should be resolved in
2844 favor of the production 'identifier_list -> identifier'. */
2845 | PROTOCOL identifier_list ';'
2846 {
2847 objc_declare_protocols ($2);
2848 }
2849 ;
2851 protocolrefs:
2852 /* empty */
2853 {
2854 $$ = NULL_TREE;
2855 }
2856 | non_empty_protocolrefs
2857 ;
2859 non_empty_protocolrefs:
2860 ARITHCOMPARE identifier_list ARITHCOMPARE
2861 {
2862 if ($1 == LT_EXPR && $3 == GT_EXPR)
2863 $$ = $2;
2864 else
2865 YYERROR1;
2866 }
2867 ;
2869 ivar_decl_list:
2870 ivar_decl_list visibility_spec ivar_decls
2871 | ivar_decls
2872 ;
2874 visibility_spec:
2875 PRIVATE { objc_public_flag = 2; }
2876 | PROTECTED { objc_public_flag = 0; }
2877 | PUBLIC { objc_public_flag = 1; }
2878 ;
2880 ivar_decls:
2881 /* empty */
2882 {
2883 $$ = NULL_TREE;
2884 }
2885 | ivar_decls ivar_decl ';'
2886 | ivar_decls ';'
2887 {
2888 if (pedantic)
2889 pedwarn ("extra semicolon in struct or union specified");
2890 }
2891 ;
2894 /* There is a shift-reduce conflict here, because `components' may
2895 start with a `typename'. It happens that shifting (the default resolution)
2896 does the right thing, because it treats the `typename' as part of
2897 a `typed_typespecs'.
2899 It is possible that this same technique would allow the distinction
2900 between `notype_initdecls' and `initdecls' to be eliminated.
2901 But I am being cautious and not trying it. */
2903 ivar_decl:
2904 declspecs_nosc_ts setspecs ivars
2905 { $$ = $3;
2906 POP_DECLSPEC_STACK; }
2907 | declspecs_nosc_nots setspecs ivars
2908 { $$ = $3;
2909 POP_DECLSPEC_STACK; }
2910 | error
2911 { $$ = NULL_TREE; }
2912 ;
2914 ivars:
2915 /* empty */
2916 { $$ = NULL_TREE; }
2917 | ivar_declarator
2918 | ivars ',' maybe_resetattrs ivar_declarator
2919 ;
2921 ivar_declarator:
2922 declarator
2923 {
2924 $$ = add_instance_variable (objc_ivar_context,
2925 objc_public_flag,
2926 $1, current_declspecs,
2927 NULL_TREE);
2928 }
2929 | declarator ':' expr_no_commas
2930 {
2931 $$ = add_instance_variable (objc_ivar_context,
2932 objc_public_flag,
2933 $1, current_declspecs, $3);
2934 }
2935 | ':' expr_no_commas
2936 {
2937 $$ = add_instance_variable (objc_ivar_context,
2938 objc_public_flag,
2939 NULL_TREE,
2940 current_declspecs, $2);
2941 }
2942 ;
2944 methodtype:
2945 '+'
2946 { objc_inherit_code = CLASS_METHOD_DECL; }
2947 | '-'
2948 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2949 ;
2951 methoddef:
2952 methodtype
2953 {
2954 objc_pq_context = 1;
2955 if (!objc_implementation_context)
2956 fatal_error ("method definition not in class context");
2957 }
2958 methoddecl
2959 {
2960 objc_pq_context = 0;
2961 objc_add_method (objc_implementation_context,
2962 $3,
2963 objc_inherit_code == CLASS_METHOD_DECL);
2964 start_method_def ($3);
2965 }
2966 optarglist
2967 {
2968 continue_method_def ();
2969 }
2970 compstmt_or_error
2971 {
2972 finish_method_def ();
2973 }
2974 ;
2976 /* the reason for the strange actions in this rule
2977 is so that notype_initdecls when reached via datadef
2978 can find a valid list of type and sc specs in $0. */
2980 methodprotolist:
2981 /* empty */
2982 | methodprotolist methodproto
2983 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2984 ;
2986 semi_or_error:
2987 ';'
2988 | error
2989 ;
2991 methodproto:
2992 methodtype
2993 {
2994 /* Remember protocol qualifiers in prototypes. */
2995 objc_pq_context = 1;
2996 }
2997 methoddecl
2998 {
2999 /* Forget protocol qualifiers here. */
3000 objc_pq_context = 0;
3001 objc_add_method (objc_interface_context,
3002 $3,
3003 objc_inherit_code == CLASS_METHOD_DECL);
3004 }
3005 semi_or_error
3006 ;
3008 methoddecl:
3009 '(' typename ')' unaryselector
3010 {
3011 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3012 }
3014 | unaryselector
3015 {
3016 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3017 }
3019 | '(' typename ')' keywordselector optparmlist
3020 {
3021 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3022 }
3024 | keywordselector optparmlist
3025 {
3026 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3027 }
3028 ;
3030 /* "optarglist" assumes that start_method_def has already been called...
3031 if it is not, the "xdecls" will not be placed in the proper scope */
3033 optarglist:
3034 /* empty */
3035 | ';' myxdecls
3036 ;
3038 /* to get around the following situation: "int foo (int a) int b; {}" that
3039 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3041 myxdecls:
3042 /* empty */
3043 | mydecls
3044 ;
3046 mydecls:
3047 mydecl
3048 | errstmt
3049 | mydecls mydecl
3050 | mydecl errstmt
3051 ;
3053 mydecl:
3054 declspecs_ts setspecs myparms ';'
3055 { POP_DECLSPEC_STACK; }
3056 | declspecs_ts ';'
3057 { shadow_tag ($1); }
3058 | declspecs_nots ';'
3059 { pedwarn ("empty declaration"); }
3060 ;
3062 myparms:
3063 myparm
3064 { push_parm_decl ($1); }
3065 | myparms ',' myparm
3066 { push_parm_decl ($3); }
3067 ;
3069 /* A single parameter declaration or parameter type name,
3070 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3072 myparm:
3073 parm_declarator maybe_attribute
3074 { $$ = build_tree_list (build_tree_list (current_declspecs,
3075 $1),
3076 chainon ($2, all_prefix_attributes)); }
3077 | notype_declarator maybe_attribute
3078 { $$ = build_tree_list (build_tree_list (current_declspecs,
3079 $1),
3080 chainon ($2, all_prefix_attributes)); }
3081 | absdcl_maybe_attribute
3082 { $$ = $1; }
3083 ;
3085 optparmlist:
3086 /* empty */
3087 {
3088 $$ = NULL_TREE;
3089 }
3090 | ',' ELLIPSIS
3091 {
3092 /* oh what a kludge! */
3093 $$ = objc_ellipsis_node;
3094 }
3095 | ','
3096 {
3097 pushlevel (0);
3098 }
3099 parmlist_2
3100 {
3101 /* returns a tree list node generated by get_parm_info */
3102 $$ = $3;
3103 poplevel (0, 0, 0);
3104 }
3105 ;
3107 unaryselector:
3108 selector
3109 ;
3111 keywordselector:
3112 keyworddecl
3114 | keywordselector keyworddecl
3115 {
3116 $$ = chainon ($1, $2);
3117 }
3118 ;
3120 selector:
3121 IDENTIFIER
3122 | TYPENAME
3123 | CLASSNAME
3124 | OBJECTNAME
3125 | reservedwords
3126 ;
3128 reservedwords:
3129 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3130 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3131 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3132 | TYPESPEC | TYPE_QUAL
3133 ;
3135 keyworddecl:
3136 selector ':' '(' typename ')' identifier
3137 {
3138 $$ = build_keyword_decl ($1, $4, $6);
3139 }
3141 | selector ':' identifier
3142 {
3143 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3144 }
3146 | ':' '(' typename ')' identifier
3147 {
3148 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3149 }
3151 | ':' identifier
3152 {
3153 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3154 }
3155 ;
3157 messageargs:
3158 selector
3159 | keywordarglist
3160 ;
3162 keywordarglist:
3163 keywordarg
3164 | keywordarglist keywordarg
3165 {
3166 $$ = chainon ($1, $2);
3167 }
3168 ;
3171 keywordexpr:
3172 nonnull_exprlist
3173 {
3174 if (TREE_CHAIN ($1) == NULL_TREE)
3175 /* just return the expr., remove a level of indirection */
3176 $$ = TREE_VALUE ($1);
3177 else
3178 /* we have a comma expr., we will collapse later */
3179 $$ = $1;
3180 }
3181 ;
3183 keywordarg:
3184 selector ':' keywordexpr
3185 {
3186 $$ = build_tree_list ($1, $3);
3187 }
3188 | ':' keywordexpr
3189 {
3190 $$ = build_tree_list (NULL_TREE, $2);
3191 }
3192 ;
3194 receiver:
3195 expr
3196 | CLASSNAME
3197 {
3198 $$ = get_class_reference ($1);
3199 }
3200 | TYPENAME
3201 {
3202 $$ = get_class_reference ($1);
3203 }
3204 ;
3206 objcmessageexpr:
3207 '[' receiver messageargs ']'
3208 { $$ = build_tree_list ($2, $3); }
3209 ;
3211 selectorarg:
3212 selector
3213 | keywordnamelist
3214 ;
3216 keywordnamelist:
3217 keywordname
3218 | keywordnamelist keywordname
3219 {
3220 $$ = chainon ($1, $2);
3221 }
3222 ;
3224 keywordname:
3225 selector ':'
3226 {
3227 $$ = build_tree_list ($1, NULL_TREE);
3228 }
3229 | ':'
3230 {
3231 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3232 }
3233 ;
3235 objcselectorexpr:
3236 SELECTOR '(' selectorarg ')'
3237 {
3238 $$ = $3;
3239 }
3240 ;
3242 objcprotocolexpr:
3243 PROTOCOL '(' identifier ')'
3244 {
3245 $$ = $3;
3246 }
3247 ;
3249 /* extension to support C-structures in the archiver */
3251 objcencodeexpr:
3252 ENCODE '(' typename ')'
3253 {
3254 $$ = groktypename ($3);
3255 }
3256 ;
3258 @@end_ifobjc
3259 %%
3261 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3262 cpplib.h's token codes into yacc's token codes. */
3264 static enum cpp_ttype last_token;
3266 /* The reserved keyword table. */
3267 struct resword
3268 {
3269 const char *word;
3270 ENUM_BITFIELD(rid) rid : 16;
3271 unsigned int disable : 16;
3272 };
3274 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3275 _true_. */
3276 #define D_C89 0x01 /* not in C89 */
3277 #define D_EXT 0x02 /* GCC extension */
3278 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3279 #define D_OBJC 0x08 /* Objective C only */
3281 static const struct resword reswords[] =
3282 {
3283 { "_Bool", RID_BOOL, 0 },
3284 { "_Complex", RID_COMPLEX, 0 },
3285 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3286 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3287 { "__alignof", RID_ALIGNOF, 0 },
3288 { "__alignof__", RID_ALIGNOF, 0 },
3289 { "__asm", RID_ASM, 0 },
3290 { "__asm__", RID_ASM, 0 },
3291 { "__attribute", RID_ATTRIBUTE, 0 },
3292 { "__attribute__", RID_ATTRIBUTE, 0 },
3293 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3294 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3295 { "__builtin_va_arg", RID_VA_ARG, 0 },
3296 { "__complex", RID_COMPLEX, 0 },
3297 { "__complex__", RID_COMPLEX, 0 },
3298 { "__const", RID_CONST, 0 },
3299 { "__const__", RID_CONST, 0 },
3300 { "__extension__", RID_EXTENSION, 0 },
3301 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3302 { "__imag", RID_IMAGPART, 0 },
3303 { "__imag__", RID_IMAGPART, 0 },
3304 { "__inline", RID_INLINE, 0 },
3305 { "__inline__", RID_INLINE, 0 },
3306 { "__label__", RID_LABEL, 0 },
3307 { "__ptrbase", RID_PTRBASE, 0 },
3308 { "__ptrbase__", RID_PTRBASE, 0 },
3309 { "__ptrextent", RID_PTREXTENT, 0 },
3310 { "__ptrextent__", RID_PTREXTENT, 0 },
3311 { "__ptrvalue", RID_PTRVALUE, 0 },
3312 { "__ptrvalue__", RID_PTRVALUE, 0 },
3313 { "__real", RID_REALPART, 0 },
3314 { "__real__", RID_REALPART, 0 },
3315 { "__restrict", RID_RESTRICT, 0 },
3316 { "__restrict__", RID_RESTRICT, 0 },
3317 { "__signed", RID_SIGNED, 0 },
3318 { "__signed__", RID_SIGNED, 0 },
3319 { "__thread", RID_THREAD, 0 },
3320 { "__typeof", RID_TYPEOF, 0 },
3321 { "__typeof__", RID_TYPEOF, 0 },
3322 { "__volatile", RID_VOLATILE, 0 },
3323 { "__volatile__", RID_VOLATILE, 0 },
3324 { "asm", RID_ASM, D_EXT },
3325 { "auto", RID_AUTO, 0 },
3326 { "break", RID_BREAK, 0 },
3327 { "case", RID_CASE, 0 },
3328 { "char", RID_CHAR, 0 },
3329 { "const", RID_CONST, 0 },
3330 { "continue", RID_CONTINUE, 0 },
3331 { "default", RID_DEFAULT, 0 },
3332 { "do", RID_DO, 0 },
3333 { "double", RID_DOUBLE, 0 },
3334 { "else", RID_ELSE, 0 },
3335 { "enum", RID_ENUM, 0 },
3336 { "extern", RID_EXTERN, 0 },
3337 { "float", RID_FLOAT, 0 },
3338 { "for", RID_FOR, 0 },
3339 { "goto", RID_GOTO, 0 },
3340 { "if", RID_IF, 0 },
3341 { "inline", RID_INLINE, D_EXT89 },
3342 { "int", RID_INT, 0 },
3343 { "long", RID_LONG, 0 },
3344 { "register", RID_REGISTER, 0 },
3345 { "restrict", RID_RESTRICT, D_C89 },
3346 { "return", RID_RETURN, 0 },
3347 { "short", RID_SHORT, 0 },
3348 { "signed", RID_SIGNED, 0 },
3349 { "sizeof", RID_SIZEOF, 0 },
3350 { "static", RID_STATIC, 0 },
3351 { "struct", RID_STRUCT, 0 },
3352 { "switch", RID_SWITCH, 0 },
3353 { "typedef", RID_TYPEDEF, 0 },
3354 { "typeof", RID_TYPEOF, D_EXT },
3355 { "union", RID_UNION, 0 },
3356 { "unsigned", RID_UNSIGNED, 0 },
3357 { "void", RID_VOID, 0 },
3358 { "volatile", RID_VOLATILE, 0 },
3359 { "while", RID_WHILE, 0 },
3360 @@ifobjc
3361 { "id", RID_ID, D_OBJC },
3363 /* These objc keywords are recognized only immediately after
3364 an '@'. */
3365 { "class", RID_AT_CLASS, D_OBJC },
3366 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3367 { "defs", RID_AT_DEFS, D_OBJC },
3368 { "encode", RID_AT_ENCODE, D_OBJC },
3369 { "end", RID_AT_END, D_OBJC },
3370 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3371 { "interface", RID_AT_INTERFACE, D_OBJC },
3372 { "private", RID_AT_PRIVATE, D_OBJC },
3373 { "protected", RID_AT_PROTECTED, D_OBJC },
3374 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3375 { "public", RID_AT_PUBLIC, D_OBJC },
3376 { "selector", RID_AT_SELECTOR, D_OBJC },
3377 { "throw", RID_AT_THROW, D_OBJC },
3378 { "try", RID_AT_TRY, D_OBJC },
3379 { "catch", RID_AT_CATCH, D_OBJC },
3380 { "finally", RID_AT_FINALLY, D_OBJC },
3381 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3382 /* These are recognized only in protocol-qualifier context
3383 (see above) */
3384 { "bycopy", RID_BYCOPY, D_OBJC },
3385 { "byref", RID_BYREF, D_OBJC },
3386 { "in", RID_IN, D_OBJC },
3387 { "inout", RID_INOUT, D_OBJC },
3388 { "oneway", RID_ONEWAY, D_OBJC },
3389 { "out", RID_OUT, D_OBJC },
3390 @@end_ifobjc
3391 };
3392 #define N_reswords (sizeof reswords / sizeof (struct resword))
3394 /* Table mapping from RID_* constants to yacc token numbers.
3395 Unfortunately we have to have entries for all the keywords in all
3396 three languages. */
3397 static const short rid_to_yy[RID_MAX] =
3398 {
3399 /* RID_STATIC */ STATIC,
3400 /* RID_UNSIGNED */ TYPESPEC,
3401 /* RID_LONG */ TYPESPEC,
3402 /* RID_CONST */ TYPE_QUAL,
3403 /* RID_EXTERN */ SCSPEC,
3404 /* RID_REGISTER */ SCSPEC,
3405 /* RID_TYPEDEF */ SCSPEC,
3406 /* RID_SHORT */ TYPESPEC,
3407 /* RID_INLINE */ SCSPEC,
3408 /* RID_VOLATILE */ TYPE_QUAL,
3409 /* RID_SIGNED */ TYPESPEC,
3410 /* RID_AUTO */ SCSPEC,
3411 /* RID_RESTRICT */ TYPE_QUAL,
3413 /* C extensions */
3414 /* RID_COMPLEX */ TYPESPEC,
3415 /* RID_THREAD */ SCSPEC,
3417 /* C++ */
3418 /* RID_FRIEND */ 0,
3419 /* RID_VIRTUAL */ 0,
3420 /* RID_EXPLICIT */ 0,
3421 /* RID_EXPORT */ 0,
3422 /* RID_MUTABLE */ 0,
3424 /* ObjC */
3425 /* RID_IN */ TYPE_QUAL,
3426 /* RID_OUT */ TYPE_QUAL,
3427 /* RID_INOUT */ TYPE_QUAL,
3428 /* RID_BYCOPY */ TYPE_QUAL,
3429 /* RID_BYREF */ TYPE_QUAL,
3430 /* RID_ONEWAY */ TYPE_QUAL,
3432 /* C */
3433 /* RID_INT */ TYPESPEC,
3434 /* RID_CHAR */ TYPESPEC,
3435 /* RID_FLOAT */ TYPESPEC,
3436 /* RID_DOUBLE */ TYPESPEC,
3437 /* RID_VOID */ TYPESPEC,
3438 /* RID_ENUM */ ENUM,
3439 /* RID_STRUCT */ STRUCT,
3440 /* RID_UNION */ UNION,
3441 /* RID_IF */ IF,
3442 /* RID_ELSE */ ELSE,
3443 /* RID_WHILE */ WHILE,
3444 /* RID_DO */ DO,
3445 /* RID_FOR */ FOR,
3446 /* RID_SWITCH */ SWITCH,
3447 /* RID_CASE */ CASE,
3448 /* RID_DEFAULT */ DEFAULT,
3449 /* RID_BREAK */ BREAK,
3450 /* RID_CONTINUE */ CONTINUE,
3451 /* RID_RETURN */ RETURN,
3452 /* RID_GOTO */ GOTO,
3453 /* RID_SIZEOF */ SIZEOF,
3455 /* C extensions */
3456 /* RID_ASM */ ASM_KEYWORD,
3457 /* RID_TYPEOF */ TYPEOF,
3458 /* RID_ALIGNOF */ ALIGNOF,
3459 /* RID_ATTRIBUTE */ ATTRIBUTE,
3460 /* RID_VA_ARG */ VA_ARG,
3461 /* RID_EXTENSION */ EXTENSION,
3462 /* RID_IMAGPART */ IMAGPART,
3463 /* RID_REALPART */ REALPART,
3464 /* RID_LABEL */ LABEL,
3465 /* RID_PTRBASE */ PTR_BASE,
3466 /* RID_PTREXTENT */ PTR_EXTENT,
3467 /* RID_PTRVALUE */ PTR_VALUE,
3469 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3470 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3472 /* RID_FUNCTION_NAME */ FUNC_NAME,
3473 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3474 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3476 /* C++ */
3477 /* RID_BOOL */ TYPESPEC,
3478 /* RID_WCHAR */ 0,
3479 /* RID_CLASS */ 0,
3480 /* RID_PUBLIC */ 0,
3481 /* RID_PRIVATE */ 0,
3482 /* RID_PROTECTED */ 0,
3483 /* RID_TEMPLATE */ 0,
3484 /* RID_NULL */ 0,
3485 /* RID_CATCH */ 0,
3486 /* RID_DELETE */ 0,
3487 /* RID_FALSE */ 0,
3488 /* RID_NAMESPACE */ 0,
3489 /* RID_NEW */ 0,
3490 /* RID_OPERATOR */ 0,
3491 /* RID_THIS */ 0,
3492 /* RID_THROW */ 0,
3493 /* RID_TRUE */ 0,
3494 /* RID_TRY */ 0,
3495 /* RID_TYPENAME */ 0,
3496 /* RID_TYPEID */ 0,
3497 /* RID_USING */ 0,
3499 /* casts */
3500 /* RID_CONSTCAST */ 0,
3501 /* RID_DYNCAST */ 0,
3502 /* RID_REINTCAST */ 0,
3503 /* RID_STATCAST */ 0,
3505 /* Objective C */
3506 /* RID_ID */ OBJECTNAME,
3507 /* RID_AT_ENCODE */ ENCODE,
3508 /* RID_AT_END */ END,
3509 /* RID_AT_CLASS */ CLASS,
3510 /* RID_AT_ALIAS */ ALIAS,
3511 /* RID_AT_DEFS */ DEFS,
3512 /* RID_AT_PRIVATE */ PRIVATE,
3513 /* RID_AT_PROTECTED */ PROTECTED,
3514 /* RID_AT_PUBLIC */ PUBLIC,
3515 /* RID_AT_PROTOCOL */ PROTOCOL,
3516 /* RID_AT_SELECTOR */ SELECTOR,
3517 /* RID_AT_THROW */ AT_THROW,
3518 /* RID_AT_TRY */ AT_TRY,
3519 /* RID_AT_CATCH */ AT_CATCH,
3520 /* RID_AT_FINALLY */ AT_FINALLY,
3521 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3522 /* RID_AT_INTERFACE */ INTERFACE,
3523 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3524 };
3526 static void
3527 init_reswords (void)
3528 {
3529 unsigned int i;
3530 tree id;
3531 int mask = (flag_isoc99 ? 0 : D_C89)
3532 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3534 if (!c_dialect_objc ())
3535 mask |= D_OBJC;
3537 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3538 for (i = 0; i < N_reswords; i++)
3539 {
3540 /* If a keyword is disabled, do not enter it into the table
3541 and so create a canonical spelling that isn't a keyword. */
3542 if (reswords[i].disable & mask)
3543 continue;
3545 id = get_identifier (reswords[i].word);
3546 C_RID_CODE (id) = reswords[i].rid;
3547 C_IS_RESERVED_WORD (id) = 1;
3548 ridpointers [(int) reswords[i].rid] = id;
3549 }
3550 }
3552 #define NAME(type) cpp_type2name (type)
3554 static void
3555 yyerror (const char *msgid)
3556 {
3557 const char *string = _(msgid);
3559 if (last_token == CPP_EOF)
3560 error ("%s at end of input", string);
3561 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3562 {
3563 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3564 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3565 if (val <= UCHAR_MAX && ISGRAPH (val))
3566 error ("%s before %s'%c'", string, ell, val);
3567 else
3568 error ("%s before %s'\\x%x'", string, ell, val);
3569 }
3570 else if (last_token == CPP_STRING
3571 || last_token == CPP_WSTRING)
3572 error ("%s before string constant", string);
3573 else if (last_token == CPP_NUMBER)
3574 error ("%s before numeric constant", string);
3575 else if (last_token == CPP_NAME)
3576 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3577 else
3578 error ("%s before '%s' token", string, NAME(last_token));
3579 }
3581 static int
3582 yylexname (void)
3583 {
3584 tree decl;
3586 @@ifobjc
3587 int objc_force_identifier = objc_need_raw_identifier;
3588 OBJC_NEED_RAW_IDENTIFIER (0);
3589 @@end_ifobjc
3591 if (C_IS_RESERVED_WORD (yylval.ttype))
3592 {
3593 enum rid rid_code = C_RID_CODE (yylval.ttype);
3595 @@ifobjc
3596 /* Turn non-typedefed refs to "id" into plain identifiers; this
3597 allows constructs like "void foo(id id);" to work. */
3598 if (rid_code == RID_ID)
3599 {
3600 decl = lookup_name (yylval.ttype);
3601 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3602 return IDENTIFIER;
3603 }
3605 if (!OBJC_IS_AT_KEYWORD (rid_code)
3606 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3607 @@end_ifobjc
3608 {
3609 /* Return the canonical spelling for this keyword. */
3610 yylval.ttype = ridpointers[(int) rid_code];
3611 return rid_to_yy[(int) rid_code];
3612 }
3613 }
3615 decl = lookup_name (yylval.ttype);
3616 if (decl)
3617 {
3618 if (TREE_CODE (decl) == TYPE_DECL)
3619 return TYPENAME;
3620 }
3621 @@ifobjc
3622 else
3623 {
3624 tree objc_interface_decl = is_class_name (yylval.ttype);
3625 /* ObjC class names are in the same namespace as variables and
3626 typedefs, and hence are shadowed by local declarations. */
3627 if (objc_interface_decl
3628 && (global_bindings_p ()
3629 || (!objc_force_identifier && !decl)))
3630 {
3631 yylval.ttype = objc_interface_decl;
3632 return CLASSNAME;
3633 }
3634 }
3635 @@end_ifobjc
3637 return IDENTIFIER;
3638 }
3640 static inline int
3641 _yylex (void)
3642 {
3643 get_next:
3644 last_token = c_lex (&yylval.ttype);
3645 switch (last_token)
3646 {
3647 case CPP_EQ: return '=';
3648 case CPP_NOT: return '!';
3649 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3650 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3651 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3652 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3653 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3654 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3655 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3656 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3657 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3658 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3659 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3660 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3662 case CPP_COMPL: return '~';
3663 case CPP_AND_AND: return ANDAND;
3664 case CPP_OR_OR: return OROR;
3665 case CPP_QUERY: return '?';
3666 case CPP_OPEN_PAREN: return '(';
3667 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3668 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3669 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3670 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3672 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3673 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3674 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3675 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3676 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3677 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3678 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3679 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3680 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3681 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3683 case CPP_OPEN_SQUARE: return '[';
3684 case CPP_CLOSE_SQUARE: return ']';
3685 case CPP_OPEN_BRACE: return '{';
3686 case CPP_CLOSE_BRACE: return '}';
3687 case CPP_ELLIPSIS: return ELLIPSIS;
3689 case CPP_PLUS_PLUS: return PLUSPLUS;
3690 case CPP_MINUS_MINUS: return MINUSMINUS;
3691 case CPP_DEREF: return POINTSAT;
3692 case CPP_DOT: return '.';
3694 /* The following tokens may affect the interpretation of any
3695 identifiers following, if doing Objective-C. */
3696 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3697 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3698 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3699 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3701 case CPP_EOF:
3702 return 0;
3704 case CPP_NAME:
3705 return yylexname ();
3707 case CPP_AT_NAME:
3708 /* This only happens in Objective-C; it must be a keyword. */
3709 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3711 case CPP_NUMBER:
3712 case CPP_CHAR:
3713 case CPP_WCHAR:
3714 return CONSTANT;
3716 case CPP_STRING:
3717 case CPP_WSTRING:
3718 return STRING;
3720 case CPP_OBJC_STRING:
3721 return OBJC_STRING;
3723 /* These tokens are C++ specific (and will not be generated
3724 in C mode, but let's be cautious). */
3725 case CPP_SCOPE:
3726 case CPP_DEREF_STAR:
3727 case CPP_DOT_STAR:
3728 case CPP_MIN_EQ:
3729 case CPP_MAX_EQ:
3730 case CPP_MIN:
3731 case CPP_MAX:
3732 /* These tokens should not survive translation phase 4. */
3733 case CPP_HASH:
3734 case CPP_PASTE:
3735 error ("syntax error at '%s' token", NAME(last_token));
3736 goto get_next;
3738 default:
3739 abort ();
3740 }
3741 /* NOTREACHED */
3742 }
3744 static int
3745 yylex (void)
3746 {
3747 int r;
3748 timevar_push (TV_LEX);
3749 r = _yylex();
3750 timevar_pop (TV_LEX);
3751 return r;
3752 }
3754 /* Function used when yydebug is set, to print a token in more detail. */
3756 static void
3757 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3758 {
3759 tree t = yyl.ttype;
3761 fprintf (file, " [%s]", NAME(last_token));
3763 switch (yychar)
3764 {
3765 case IDENTIFIER:
3766 case TYPENAME:
3767 case OBJECTNAME:
3768 case TYPESPEC:
3769 case TYPE_QUAL:
3770 case SCSPEC:
3771 case STATIC:
3772 if (IDENTIFIER_POINTER (t))
3773 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3774 break;
3776 case CONSTANT:
3777 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3778 if (TREE_CODE (t) == INTEGER_CST)
3779 {
3780 fputs (" ", file);
3781 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3782 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3783 }
3784 break;
3785 }
3786 }
3787 \f
3788 /* This is not the ideal place to put these, but we have to get them out
3789 of c-lex.c because cp/lex.c has its own versions. */
3791 /* Free malloced parser stacks if necessary. */
3793 void
3794 free_parser_stacks (void)
3795 {
3796 }
3798 /* Parse the file. */
3799 void
3800 c_parse_file (void)
3801 {
3802 yyparse ();
3803 /* In case there were missing closebraces, get us back to the global
3804 binding level. */
3805 while (! global_bindings_p ())
3806 poplevel (0, 0, 0);
3807 /* __FUNCTION__ is defined at file scope (""). This
3808 call may not be necessary as my tests indicate it
3809 still works without it. */
3810 finish_fname_decls ();
3812 if (malloced_yyss)
3813 {
3814 free (malloced_yyss);
3815 free (malloced_yyvs);
3816 malloced_yyss = 0;
3817 }
3818 }
3820 #include "gt-c-parse.h"