1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004 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
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
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
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. */
32 %expect 13 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
41 #include "langhooks.h"
46 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
55 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
57 /* Like the default stack expander, except (1) use realloc when possible,
58 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
60 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
61 give malloced_yyvs its proper type. This is ok since all we need from
62 it is to be able to free it. */
64 static short *malloced_yyss;
65 static void *malloced_yyvs;
67 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
72 newsize = *(YYSSZ) *= 2; \
75 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
76 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
80 newss = really_call_malloc (newsize * sizeof (short)); \
81 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
83 memcpy (newss, *(SS), (SSSIZE)); \
85 memcpy (newvs, *(VS), (VSSIZE)); \
87 if (!newss || !newvs) \
94 malloced_yyss = newss; \
95 malloced_yyvs = (void *) newvs; \
101 %union {long itype; tree ttype; void *otype; struct c_expr exprtype;
102 struct c_arg_info *arginfotype; struct c_declarator *dtrtype;
103 struct c_type_name *typenametype; struct c_parm *parmtype;
104 struct c_declspecs *dsptype; struct c_typespec tstype;
105 enum tree_code code; location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
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. */
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. */
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
129 /* Objective-C protocol qualifiers. These acquire their magic powers
130 only in certain contexts. */
131 %token OBJC_TYPE_QUAL
133 /* Character or numeric constants.
134 yylval is the node for the constant. */
137 /* String constants in raw form.
138 yylval is a STRING_CST node. */
142 /* "...", used for functions with variable arglists. */
145 /* the reserved words */
146 /* SCO include files test "ASM", so use something else. */
147 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
148 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
149 %token ATTRIBUTE EXTENSION LABEL
150 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
151 %token FUNC_NAME OFFSETOF
153 /* Add precedence rules to solve dangling else s/r conflict */
157 /* Define the operator tokens and their precedences.
158 The value is an integer because, if used, it is the tree code
159 to use in the expression made from the operator. */
161 %right <code> ASSIGN '='
162 %right <code> '?' ':'
168 %left <code> EQCOMPARE
169 %left <code> ARITHCOMPARE
170 %left <code> LSHIFT RSHIFT
172 %left <code> '*' '/' '%'
173 %right <code> UNARY PLUSPLUS MINUSMINUS
175 %left <code> POINTSAT '.' '(' '['
177 /* The Objective-C keywords. These are included in C and in
178 Objective C, so that the token codes are the same in both. */
179 %token AT_INTERFACE AT_IMPLEMENTATION AT_END AT_SELECTOR AT_DEFS AT_ENCODE
180 %token CLASSNAME AT_PUBLIC AT_PRIVATE AT_PROTECTED AT_PROTOCOL
181 %token OBJECTNAME AT_CLASS AT_ALIAS
182 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
186 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
187 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
189 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT STRING FUNC_NAME
190 %type <ttype> nonnull_exprlist exprlist
191 %type <exprtype> expr expr_no_commas cast_expr unary_expr primary
192 %type <dsptype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
193 %type <dsptype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
194 %type <dsptype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
195 %type <dsptype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
196 %type <dsptype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
197 %type <dsptype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
198 %type <dsptype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
199 %type <dsptype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
200 %type <dsptype> declspecs_ts declspecs_nots
201 %type <dsptype> declspecs_ts_nosa declspecs_nots_nosa
202 %type <dsptype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
203 %type <dsptype> maybe_type_quals_attrs
204 %type <tstype> typespec_nonattr typespec_attr
205 %type <tstype> typespec_reserved_nonattr typespec_reserved_attr
206 %type <tstype> typespec_nonreserved_nonattr
207 %type <ttype> offsetof_member_designator
209 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
210 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
211 %type <exprtype> init
212 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
213 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
214 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
215 %type <ttype> any_word
217 %type <ttype> compstmt compstmt_start compstmt_primary_start
218 %type <ttype> stmt label stmt_nocomp start_break start_continue
220 %type <ttype> c99_block_start c99_block_lineno_labeled_stmt
221 %type <ttype> if_statement_1 if_statement_2
222 %type <dtrtype> declarator
223 %type <dtrtype> notype_declarator after_type_declarator
224 %type <dtrtype> parm_declarator
225 %type <dtrtype> parm_declarator_starttypename parm_declarator_nostarttypename
226 %type <dtrtype> array_declarator
228 %type <tstype> structsp_attr structsp_nonattr
229 %type <ttype> component_decl_list component_decl_list2
230 %type <ttype> component_decl components components_notype component_declarator
231 %type <ttype> component_notype_declarator
232 %type <ttype> enumlist enumerator
233 %type <ttype> struct_head union_head enum_head
234 %type <typenametype> typename
235 %type <dtrtype> absdcl absdcl1 absdcl1_ea absdcl1_noea direct_absdcl1
236 %type <parmtype> absdcl_maybe_attribute
237 %type <ttype> condition xexpr for_cond_expr for_incr_expr
238 %type <parmtype> parm firstparm
239 %type <ttype> identifiers
241 %type <arginfotype> parms parmlist parmlist_1 parmlist_2
242 %type <arginfotype> parmlist_or_identifiers parmlist_or_identifiers_1
243 %type <ttype> identifiers_or_typenames
245 %type <itype> setspecs setspecs_fp extension
247 %type <location> save_location
249 %type <otype> save_obstack_position
252 /* the Objective-C nonterminals */
254 %type <ttype> methoddecl unaryselector keywordselector selector
255 %type <code> methodtype
256 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
257 %type <ttype> keywordexpr keywordarglist keywordarg
258 %type <ttype> optparmlist optparms reservedwords objcselectorexpr
259 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
260 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
262 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING OBJC_TYPE_QUAL
264 %type <ttype> superclass objc_quals objc_qual objc_typename
265 %type <itype> objc_try_catch_stmt optellipsis
269 /* Declaration specifiers of the current declaration. */
270 static struct c_declspecs *current_declspecs;
271 static GTY(()) tree prefix_attributes;
273 /* List of all the attributes applying to the identifier currently being
274 declared; includes prefix_attributes and possibly some more attributes
275 just after a comma. */
276 static GTY(()) tree all_prefix_attributes;
278 /* Structure to save declaration specifiers. */
279 struct c_declspec_stack {
280 /* Saved value of current_declspecs. */
281 struct c_declspecs *current_declspecs;
282 /* Saved value of prefix_attributes. */
283 tree prefix_attributes;
284 /* Saved value of all_prefix_attributes. */
285 tree all_prefix_attributes;
286 /* Next level of stack. */
287 struct c_declspec_stack *next;
290 /* Stack of saved values of current_declspecs, prefix_attributes and
291 all_prefix_attributes. */
292 static struct c_declspec_stack *declspec_stack;
294 /* INDIRECT_REF with a TREE_TYPE of the type being queried for offsetof. */
295 static tree offsetof_base;
297 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
298 should be called from the productions making use of setspecs. */
299 #define PUSH_DECLSPEC_STACK \
301 struct c_declspec_stack *t = XOBNEW (&parser_obstack, \
302 struct c_declspec_stack); \
303 t->current_declspecs = current_declspecs; \
304 t->prefix_attributes = prefix_attributes; \
305 t->all_prefix_attributes = all_prefix_attributes; \
306 t->next = declspec_stack; \
307 declspec_stack = t; \
310 #define POP_DECLSPEC_STACK \
312 current_declspecs = declspec_stack->current_declspecs; \
313 prefix_attributes = declspec_stack->prefix_attributes; \
314 all_prefix_attributes = declspec_stack->all_prefix_attributes; \
315 declspec_stack = declspec_stack->next; \
318 /* For __extension__, save/restore the warning flags which are
319 controlled by __extension__. */
320 #define SAVE_EXT_FLAGS() \
322 | (warn_pointer_arith << 1) \
323 | (warn_traditional << 2) \
326 #define RESTORE_EXT_FLAGS(val) \
328 pedantic = val & 1; \
329 warn_pointer_arith = (val >> 1) & 1; \
330 warn_traditional = (val >> 2) & 1; \
331 flag_iso = (val >> 3) & 1; \
335 /* Objective-C specific parser/lexer information */
337 static int objc_pq_context = 0;
339 /* The following flag is needed to contextualize ObjC lexical analysis.
340 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
341 an identifier to an ObjC class, even if a class with that name
343 static int objc_need_raw_identifier;
344 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
348 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
351 /* Tell yyparse how to print a token's value, if yydebug is set. */
353 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
355 static void yyprint (FILE *, int, YYSTYPE);
356 static void yyerror (const char *);
357 static int yylexname (void);
358 static inline int _yylex (void);
359 static int yylex (void);
360 static void init_reswords (void);
362 /* Initialization routine for this file. */
374 pedwarn ("ISO C forbids an empty source file");
379 /* the reason for the strange actions in this rule
380 is so that notype_initdecls when reached via datadef
381 can find valid declaration specifiers in $0. */
384 save_obstack_position { $<dsptype>$ = NULL; } extdef
385 { obstack_free (&parser_obstack, $1); }
386 | extdefs save_obstack_position
387 { $<dsptype>$ = NULL; ggc_collect (); } extdef
388 { obstack_free (&parser_obstack, $2); }
396 { RESTORE_EXT_FLAGS ($1); }
402 /* Record the current position of parser_obstack before a
403 declaration to restore it afterwards. */
404 save_obstack_position:
405 { $$ = obstack_alloc (&parser_obstack, 0); }
409 setspecs notype_initdecls ';'
411 error ("ISO C forbids data definition with no type or storage class");
413 warning ("data definition has no type or storage class");
415 POP_DECLSPEC_STACK; }
416 | declspecs_nots setspecs notype_initdecls ';'
417 { POP_DECLSPEC_STACK; }
418 | declspecs_ts setspecs initdecls ';'
419 { POP_DECLSPEC_STACK; }
421 { shadow_tag (finish_declspecs ($1)); }
426 pedwarn ("ISO C does not allow extra %<;%> outside of a function"); }
430 declspecs_ts setspecs declarator
431 { if (!start_function (current_declspecs, $3,
432 all_prefix_attributes))
435 old_style_parm_decls save_location
436 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
437 store_parm_decls (); }
439 { finish_function ();
440 POP_DECLSPEC_STACK; }
441 | declspecs_ts setspecs declarator error
442 { POP_DECLSPEC_STACK; }
443 | declspecs_nots setspecs notype_declarator
444 { if (!start_function (current_declspecs, $3,
445 all_prefix_attributes))
448 old_style_parm_decls save_location
449 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
450 store_parm_decls (); }
452 { finish_function ();
453 POP_DECLSPEC_STACK; }
454 | declspecs_nots setspecs notype_declarator error
455 { POP_DECLSPEC_STACK; }
456 | setspecs notype_declarator
457 { if (!start_function (current_declspecs, $2,
458 all_prefix_attributes))
461 old_style_parm_decls save_location
462 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
463 store_parm_decls (); }
465 { finish_function ();
466 POP_DECLSPEC_STACK; }
467 | setspecs notype_declarator error
468 { POP_DECLSPEC_STACK; }
483 { $$ = NEGATE_EXPR; }
487 if (warn_traditional && !in_system_header)
488 warning ("traditional C rejects the unary plus operator");
492 { $$ = PREINCREMENT_EXPR; }
494 { $$ = PREDECREMENT_EXPR; }
496 { $$ = BIT_NOT_EXPR; }
498 { $$ = TRUTH_NOT_EXPR; }
502 | expr ',' expr_no_commas
503 { $$.value = build_compound_expr ($1.value, $3.value);
504 $$.original_code = COMPOUND_EXPR; }
515 { $$ = build_tree_list (NULL_TREE, $1.value); }
516 | nonnull_exprlist ',' expr_no_commas
517 { chainon ($1, build_tree_list (NULL_TREE, $3.value)); }
522 | '*' cast_expr %prec UNARY
523 { $$.value = build_indirect_ref ($2.value, "unary *");
524 $$.original_code = ERROR_MARK; }
525 /* __extension__ turns off -pedantic for following primary. */
526 | extension cast_expr %prec UNARY
528 RESTORE_EXT_FLAGS ($1); }
529 | unop cast_expr %prec UNARY
530 { $$.value = build_unary_op ($1, $2.value, 0);
531 overflow_warning ($$.value);
532 $$.original_code = ERROR_MARK; }
533 /* Refer to the address of a label as a pointer. */
535 { $$.value = finish_label_address_expr ($2);
536 $$.original_code = ERROR_MARK; }
537 | sizeof unary_expr %prec UNARY
540 if (TREE_CODE ($2.value) == COMPONENT_REF
541 && DECL_C_BIT_FIELD (TREE_OPERAND ($2.value, 1)))
542 error ("%<sizeof%> applied to a bit-field");
543 $$ = c_expr_sizeof_expr ($2); }
544 | sizeof '(' typename ')' %prec HYPERUNARY
547 $$ = c_expr_sizeof_type ($3); }
548 | alignof unary_expr %prec UNARY
551 $$.value = c_alignof_expr ($2.value);
552 $$.original_code = ERROR_MARK; }
553 | alignof '(' typename ')' %prec HYPERUNARY
556 $$.value = c_alignof (groktypename ($3));
557 $$.original_code = ERROR_MARK; }
558 | REALPART cast_expr %prec UNARY
559 { $$.value = build_unary_op (REALPART_EXPR, $2.value, 0);
560 $$.original_code = ERROR_MARK; }
561 | IMAGPART cast_expr %prec UNARY
562 { $$.value = build_unary_op (IMAGPART_EXPR, $2.value, 0);
563 $$.original_code = ERROR_MARK; }
567 SIZEOF { skip_evaluation++; in_sizeof++; }
571 ALIGNOF { skip_evaluation++; in_alignof++; }
575 TYPEOF { skip_evaluation++; in_typeof++; }
580 | '(' typename ')' cast_expr %prec UNARY
581 { $$.value = c_cast_expr ($2, $4.value);
582 $$.original_code = ERROR_MARK; }
587 | expr_no_commas '+' expr_no_commas
588 { $$ = parser_build_binary_op ($2, $1, $3); }
589 | expr_no_commas '-' expr_no_commas
590 { $$ = parser_build_binary_op ($2, $1, $3); }
591 | expr_no_commas '*' expr_no_commas
592 { $$ = parser_build_binary_op ($2, $1, $3); }
593 | expr_no_commas '/' expr_no_commas
594 { $$ = parser_build_binary_op ($2, $1, $3); }
595 | expr_no_commas '%' expr_no_commas
596 { $$ = parser_build_binary_op ($2, $1, $3); }
597 | expr_no_commas LSHIFT expr_no_commas
598 { $$ = parser_build_binary_op ($2, $1, $3); }
599 | expr_no_commas RSHIFT expr_no_commas
600 { $$ = parser_build_binary_op ($2, $1, $3); }
601 | expr_no_commas ARITHCOMPARE expr_no_commas
602 { $$ = parser_build_binary_op ($2, $1, $3); }
603 | expr_no_commas EQCOMPARE expr_no_commas
604 { $$ = parser_build_binary_op ($2, $1, $3); }
605 | expr_no_commas '&' expr_no_commas
606 { $$ = parser_build_binary_op ($2, $1, $3); }
607 | expr_no_commas '|' expr_no_commas
608 { $$ = parser_build_binary_op ($2, $1, $3); }
609 | expr_no_commas '^' expr_no_commas
610 { $$ = parser_build_binary_op ($2, $1, $3); }
611 | expr_no_commas ANDAND
612 { $1.value = lang_hooks.truthvalue_conversion
613 (default_conversion ($1.value));
614 skip_evaluation += $1.value == truthvalue_false_node; }
616 { skip_evaluation -= $1.value == truthvalue_false_node;
617 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
618 | expr_no_commas OROR
619 { $1.value = lang_hooks.truthvalue_conversion
620 (default_conversion ($1.value));
621 skip_evaluation += $1.value == truthvalue_true_node; }
623 { skip_evaluation -= $1.value == truthvalue_true_node;
624 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
626 { $1.value = lang_hooks.truthvalue_conversion
627 (default_conversion ($1.value));
628 skip_evaluation += $1.value == truthvalue_false_node; }
630 { skip_evaluation += (($1.value == truthvalue_true_node)
631 - ($1.value == truthvalue_false_node)); }
633 { skip_evaluation -= $1.value == truthvalue_true_node;
634 $$.value = build_conditional_expr ($1.value, $4.value,
636 $$.original_code = ERROR_MARK; }
639 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
640 /* Make sure first operand is calculated only once. */
641 $<ttype>2 = save_expr (default_conversion ($1.value));
642 $1.value = lang_hooks.truthvalue_conversion ($<ttype>2);
643 skip_evaluation += $1.value == truthvalue_true_node; }
645 { skip_evaluation -= $1.value == truthvalue_true_node;
646 $$.value = build_conditional_expr ($1.value, $<ttype>2,
648 $$.original_code = ERROR_MARK; }
649 | expr_no_commas '=' expr_no_commas
650 { $$.value = build_modify_expr ($1.value, NOP_EXPR, $3.value);
651 $$.original_code = MODIFY_EXPR;
653 | expr_no_commas ASSIGN expr_no_commas
654 { $$.value = build_modify_expr ($1.value, $2, $3.value);
655 TREE_NO_WARNING ($$.value) = 1;
656 $$.original_code = ERROR_MARK;
663 if (yychar == YYEMPTY)
665 $$.value = build_external_ref ($1, yychar == '(');
666 $$.original_code = ERROR_MARK;
669 { $$.value = $1; $$.original_code = ERROR_MARK; }
671 { $$.value = $1; $$.original_code = STRING_CST; }
673 { $$.value = fname_decl (C_RID_CODE ($1), $1);
674 $$.original_code = ERROR_MARK; }
675 | '(' typename ')' '{'
676 { start_init (NULL_TREE, NULL, 0);
677 $<ttype>$ = groktypename ($2);
678 if (C_TYPE_VARIABLE_SIZE ($<ttype>$))
680 error ("compound literal has variable size");
681 $<ttype>$ = error_mark_node;
683 really_start_incremental_init ($<ttype>$); }
684 initlist_maybe_comma '}' %prec UNARY
685 { struct c_expr init = pop_init_level (0);
686 tree constructor = init.value;
687 tree type = $<ttype>5;
689 maybe_warn_string_init (type, init);
691 if (pedantic && !flag_isoc99)
692 pedwarn ("ISO C90 forbids compound literals");
693 $$.value = build_compound_literal (type, constructor);
694 $$.original_code = ERROR_MARK;
697 { $$.value = $2.value;
698 if (TREE_CODE ($$.value) == MODIFY_EXPR)
699 TREE_NO_WARNING ($$.value) = 1;
700 $$.original_code = ERROR_MARK; }
702 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
703 | compstmt_primary_start compstmt_nostart ')'
705 pedwarn ("ISO C forbids braced-groups within expressions");
706 $$.value = c_finish_stmt_expr ($1);
707 $$.original_code = ERROR_MARK;
709 | compstmt_primary_start error ')'
710 { c_finish_stmt_expr ($1);
711 $$.value = error_mark_node;
712 $$.original_code = ERROR_MARK;
714 | primary '(' exprlist ')' %prec '.'
715 { $$.value = build_function_call ($1.value, $3);
716 $$.original_code = ERROR_MARK; }
717 | VA_ARG '(' expr_no_commas ',' typename ')'
718 { $$.value = build_va_arg ($3.value, groktypename ($5));
719 $$.original_code = ERROR_MARK; }
721 | OFFSETOF '(' typename ','
722 { tree type = groktypename ($3);
723 if (type == error_mark_node)
724 offsetof_base = error_mark_node;
726 offsetof_base = build1 (INDIRECT_REF, type, NULL);
728 offsetof_member_designator ')'
729 { $$.value = fold_offsetof ($6);
730 $$.original_code = ERROR_MARK; }
731 | OFFSETOF '(' error ')'
732 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
733 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ','
740 if (TREE_CODE (c) != INTEGER_CST)
741 error ("first argument to __builtin_choose_expr not"
743 $$ = integer_zerop (c) ? $7 : $5;
745 | CHOOSE_EXPR '(' error ')'
746 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
747 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
751 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
752 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
754 $$.value = comptypes (e1, e2)
755 ? build_int_cst (NULL_TREE, 1)
756 : build_int_cst (NULL_TREE, 0);
757 $$.original_code = ERROR_MARK;
759 | TYPES_COMPATIBLE_P '(' error ')'
760 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
761 | primary '[' expr ']' %prec '.'
762 { $$.value = build_array_ref ($1.value, $3.value);
763 $$.original_code = ERROR_MARK; }
764 | primary '.' identifier
765 { $$.value = build_component_ref ($1.value, $3);
766 $$.original_code = ERROR_MARK; }
767 | primary POINTSAT identifier
769 tree expr = build_indirect_ref ($1.value, "->");
770 $$.value = build_component_ref (expr, $3);
771 $$.original_code = ERROR_MARK;
774 { $$.value = build_unary_op (POSTINCREMENT_EXPR, $1.value, 0);
775 $$.original_code = ERROR_MARK; }
777 { $$.value = build_unary_op (POSTDECREMENT_EXPR, $1.value, 0);
778 $$.original_code = ERROR_MARK; }
781 { $$.value = objc_build_message_expr ($1);
782 $$.original_code = ERROR_MARK; }
784 { $$.value = objc_build_selector_expr ($1);
785 $$.original_code = ERROR_MARK; }
787 { $$.value = objc_build_protocol_expr ($1);
788 $$.original_code = ERROR_MARK; }
790 { $$.value = objc_build_encode_expr ($1);
791 $$.original_code = ERROR_MARK; }
793 { $$.value = objc_build_string_object ($1);
794 $$.original_code = ERROR_MARK; }
798 /* This is the second argument to __builtin_offsetof. We must have one
799 identifier, and beyond that we want to accept sub structure and sub
802 offsetof_member_designator:
804 { $$ = build_component_ref (offsetof_base, $1); }
805 | offsetof_member_designator '.' identifier
806 { $$ = build_component_ref ($1, $3); }
807 | offsetof_member_designator '[' expr ']'
808 { $$ = build_array_ref ($1, $3.value); }
811 old_style_parm_decls:
816 /* The following are analogous to lineno_decl, decls and decl
817 except that they do not allow nested functions.
818 They are used for old-style parm decls. */
820 save_location datadecl
827 | datadecls lineno_datadecl
828 | lineno_datadecl errstmt
831 /* We don't allow prefix attributes here because they cause reduce/reduce
832 conflicts: we can't know whether we're parsing a function decl with
833 attribute suffix, or function defn with attribute prefix on first old
836 declspecs_ts_nosa setspecs initdecls ';'
837 { POP_DECLSPEC_STACK; }
838 | declspecs_nots_nosa setspecs notype_initdecls ';'
839 { POP_DECLSPEC_STACK; }
840 | declspecs_ts_nosa ';'
841 { shadow_tag_warned (finish_declspecs ($1), 1);
842 pedwarn ("empty declaration"); }
843 | declspecs_nots_nosa ';'
844 { pedwarn ("empty declaration"); }
847 /* This combination which saves a lineno before a decl
848 is the normal thing to use, rather than decl itself.
849 This is to avoid shift/reduce conflicts in contexts
850 where statement labels are allowed. */
856 /* records the type and storage class specs to use for processing
857 the declarators that follow.
858 Maintains a stack of outer-level values of current_declspecs,
859 for the sake of parm declarations nested in function declarators. */
860 setspecs: /* empty */
861 { pending_xref_error ();
865 prefix_attributes = $<dsptype>0->attrs;
866 $<dsptype>0->attrs = NULL_TREE;
867 current_declspecs = $<dsptype>0;
871 prefix_attributes = NULL_TREE;
872 current_declspecs = build_null_declspecs ();
874 current_declspecs = finish_declspecs (current_declspecs);
875 all_prefix_attributes = prefix_attributes; }
878 /* Possibly attributes after a comma, which should reset all_prefix_attributes
879 to prefix_attributes with these ones chained on the front. */
882 { all_prefix_attributes = chainon ($1, prefix_attributes); }
886 declspecs_ts setspecs initdecls ';'
887 { POP_DECLSPEC_STACK; }
888 | declspecs_nots setspecs notype_initdecls ';'
889 { POP_DECLSPEC_STACK; }
890 | declspecs_ts setspecs nested_function
891 { POP_DECLSPEC_STACK; }
892 | declspecs_nots setspecs notype_nested_function
893 { POP_DECLSPEC_STACK; }
895 { shadow_tag (finish_declspecs ($1)); }
897 { RESTORE_EXT_FLAGS ($1); }
900 /* A list of declaration specifiers. These are:
902 - Storage class specifiers (scspec), which for GCC currently includes
903 function specifiers ("inline").
905 - Type specifiers (typespec_*).
907 - Type qualifiers (TYPE_QUAL).
909 - Attribute specifier lists (attributes).
911 The various cases below are classified according to:
913 (a) Whether a storage class specifier is included or not; some
914 places in the grammar disallow storage class specifiers (_sc or _nosc).
916 (b) Whether a type specifier has been seen; after a type specifier,
917 a typedef name is an identifier to redeclare (_ts or _nots).
919 (c) Whether the list starts with an attribute; in certain places,
920 the grammar requires specifiers that don't start with an attribute
923 (d) Whether the list ends with an attribute (or a specifier such that
924 any following attribute would have been parsed as part of that specifier);
925 this avoids shift-reduce conflicts in the parsing of attributes
930 (i) Distinguish between function specifiers and storage class specifiers,
931 at least for the purpose of warnings about obsolescent usage.
933 (ii) Halve the number of productions here by eliminating the _sc/_nosc
934 distinction and instead checking where required that storage class
935 specifiers aren't present. */
937 /* Declspecs which contain at least one type specifier or typedef name.
938 (Just `const' or `volatile' is not enough.)
939 A typedef'd name following these is taken as a name to be declared. */
941 declspecs_nosc_nots_nosa_noea:
943 { $$ = declspecs_add_qual (build_null_declspecs (), $1); }
944 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
945 { $$ = declspecs_add_qual ($1, $2); }
946 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
947 { $$ = declspecs_add_qual ($1, $2); }
950 declspecs_nosc_nots_nosa_ea:
951 declspecs_nosc_nots_nosa_noea attributes
952 { $$ = declspecs_add_attrs ($1, $2); }
955 declspecs_nosc_nots_sa_noea:
956 declspecs_nosc_nots_sa_noea TYPE_QUAL
957 { $$ = declspecs_add_qual ($1, $2); }
958 | declspecs_nosc_nots_sa_ea TYPE_QUAL
959 { $$ = declspecs_add_qual ($1, $2); }
962 declspecs_nosc_nots_sa_ea:
964 { $$ = declspecs_add_attrs (build_null_declspecs (), $1); }
965 | declspecs_nosc_nots_sa_noea attributes
966 { $$ = declspecs_add_attrs ($1, $2); }
969 declspecs_nosc_ts_nosa_noea:
971 { $$ = declspecs_add_type (build_null_declspecs (), $1); }
972 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
973 { $$ = declspecs_add_qual ($1, $2); }
974 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
975 { $$ = declspecs_add_qual ($1, $2); }
976 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
977 { $$ = declspecs_add_type ($1, $2); }
978 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
979 { $$ = declspecs_add_type ($1, $2); }
980 | declspecs_nosc_nots_nosa_noea typespec_nonattr
981 { $$ = declspecs_add_type ($1, $2); }
982 | declspecs_nosc_nots_nosa_ea typespec_nonattr
983 { $$ = declspecs_add_type ($1, $2); }
986 declspecs_nosc_ts_nosa_ea:
988 { $$ = declspecs_add_type (build_null_declspecs (), $1); }
989 | declspecs_nosc_ts_nosa_noea attributes
990 { $$ = declspecs_add_attrs ($1, $2); }
991 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
992 { $$ = declspecs_add_type ($1, $2); }
993 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
994 { $$ = declspecs_add_type ($1, $2); }
995 | declspecs_nosc_nots_nosa_noea typespec_attr
996 { $$ = declspecs_add_type ($1, $2); }
997 | declspecs_nosc_nots_nosa_ea typespec_attr
998 { $$ = declspecs_add_type ($1, $2); }
1001 declspecs_nosc_ts_sa_noea:
1002 declspecs_nosc_ts_sa_noea TYPE_QUAL
1003 { $$ = declspecs_add_qual ($1, $2); }
1004 | declspecs_nosc_ts_sa_ea TYPE_QUAL
1005 { $$ = declspecs_add_qual ($1, $2); }
1006 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
1007 { $$ = declspecs_add_type ($1, $2); }
1008 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
1009 { $$ = declspecs_add_type ($1, $2); }
1010 | declspecs_nosc_nots_sa_noea typespec_nonattr
1011 { $$ = declspecs_add_type ($1, $2); }
1012 | declspecs_nosc_nots_sa_ea typespec_nonattr
1013 { $$ = declspecs_add_type ($1, $2); }
1016 declspecs_nosc_ts_sa_ea:
1017 declspecs_nosc_ts_sa_noea attributes
1018 { $$ = declspecs_add_attrs ($1, $2); }
1019 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1020 { $$ = declspecs_add_type ($1, $2); }
1021 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1022 { $$ = declspecs_add_type ($1, $2); }
1023 | declspecs_nosc_nots_sa_noea typespec_attr
1024 { $$ = declspecs_add_type ($1, $2); }
1025 | declspecs_nosc_nots_sa_ea typespec_attr
1026 { $$ = declspecs_add_type ($1, $2); }
1029 declspecs_sc_nots_nosa_noea:
1031 { $$ = declspecs_add_scspec (build_null_declspecs (), $1); }
1032 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1033 { $$ = declspecs_add_qual ($1, $2); }
1034 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1035 { $$ = declspecs_add_qual ($1, $2); }
1036 | declspecs_nosc_nots_nosa_noea scspec
1037 { $$ = declspecs_add_scspec ($1, $2); }
1038 | declspecs_nosc_nots_nosa_ea scspec
1039 { $$ = declspecs_add_scspec ($1, $2); }
1040 | declspecs_sc_nots_nosa_noea scspec
1041 { $$ = declspecs_add_scspec ($1, $2); }
1042 | declspecs_sc_nots_nosa_ea scspec
1043 { $$ = declspecs_add_scspec ($1, $2); }
1046 declspecs_sc_nots_nosa_ea:
1047 declspecs_sc_nots_nosa_noea attributes
1048 { $$ = declspecs_add_attrs ($1, $2); }
1051 declspecs_sc_nots_sa_noea:
1052 declspecs_sc_nots_sa_noea TYPE_QUAL
1053 { $$ = declspecs_add_qual ($1, $2); }
1054 | declspecs_sc_nots_sa_ea TYPE_QUAL
1055 { $$ = declspecs_add_qual ($1, $2); }
1056 | declspecs_nosc_nots_sa_noea scspec
1057 { $$ = declspecs_add_scspec ($1, $2); }
1058 | declspecs_nosc_nots_sa_ea scspec
1059 { $$ = declspecs_add_scspec ($1, $2); }
1060 | declspecs_sc_nots_sa_noea scspec
1061 { $$ = declspecs_add_scspec ($1, $2); }
1062 | declspecs_sc_nots_sa_ea scspec
1063 { $$ = declspecs_add_scspec ($1, $2); }
1066 declspecs_sc_nots_sa_ea:
1067 declspecs_sc_nots_sa_noea attributes
1068 { $$ = declspecs_add_attrs ($1, $2); }
1071 declspecs_sc_ts_nosa_noea:
1072 declspecs_sc_ts_nosa_noea TYPE_QUAL
1073 { $$ = declspecs_add_qual ($1, $2); }
1074 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1075 { $$ = declspecs_add_qual ($1, $2); }
1076 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1077 { $$ = declspecs_add_type ($1, $2); }
1078 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1079 { $$ = declspecs_add_type ($1, $2); }
1080 | declspecs_sc_nots_nosa_noea typespec_nonattr
1081 { $$ = declspecs_add_type ($1, $2); }
1082 | declspecs_sc_nots_nosa_ea typespec_nonattr
1083 { $$ = declspecs_add_type ($1, $2); }
1084 | declspecs_nosc_ts_nosa_noea scspec
1085 { $$ = declspecs_add_scspec ($1, $2); }
1086 | declspecs_nosc_ts_nosa_ea scspec
1087 { $$ = declspecs_add_scspec ($1, $2); }
1088 | declspecs_sc_ts_nosa_noea scspec
1089 { $$ = declspecs_add_scspec ($1, $2); }
1090 | declspecs_sc_ts_nosa_ea scspec
1091 { $$ = declspecs_add_scspec ($1, $2); }
1094 declspecs_sc_ts_nosa_ea:
1095 declspecs_sc_ts_nosa_noea attributes
1096 { $$ = declspecs_add_attrs ($1, $2); }
1097 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1098 { $$ = declspecs_add_type ($1, $2); }
1099 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1100 { $$ = declspecs_add_type ($1, $2); }
1101 | declspecs_sc_nots_nosa_noea typespec_attr
1102 { $$ = declspecs_add_type ($1, $2); }
1103 | declspecs_sc_nots_nosa_ea typespec_attr
1104 { $$ = declspecs_add_type ($1, $2); }
1107 declspecs_sc_ts_sa_noea:
1108 declspecs_sc_ts_sa_noea TYPE_QUAL
1109 { $$ = declspecs_add_qual ($1, $2); }
1110 | declspecs_sc_ts_sa_ea TYPE_QUAL
1111 { $$ = declspecs_add_qual ($1, $2); }
1112 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1113 { $$ = declspecs_add_type ($1, $2); }
1114 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1115 { $$ = declspecs_add_type ($1, $2); }
1116 | declspecs_sc_nots_sa_noea typespec_nonattr
1117 { $$ = declspecs_add_type ($1, $2); }
1118 | declspecs_sc_nots_sa_ea typespec_nonattr
1119 { $$ = declspecs_add_type ($1, $2); }
1120 | declspecs_nosc_ts_sa_noea scspec
1121 { $$ = declspecs_add_scspec ($1, $2); }
1122 | declspecs_nosc_ts_sa_ea scspec
1123 { $$ = declspecs_add_scspec ($1, $2); }
1124 | declspecs_sc_ts_sa_noea scspec
1125 { $$ = declspecs_add_scspec ($1, $2); }
1126 | declspecs_sc_ts_sa_ea scspec
1127 { $$ = declspecs_add_scspec ($1, $2); }
1130 declspecs_sc_ts_sa_ea:
1131 declspecs_sc_ts_sa_noea attributes
1132 { $$ = declspecs_add_attrs ($1, $2); }
1133 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1134 { $$ = declspecs_add_type ($1, $2); }
1135 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1136 { $$ = declspecs_add_type ($1, $2); }
1137 | declspecs_sc_nots_sa_noea typespec_attr
1138 { $$ = declspecs_add_type ($1, $2); }
1139 | declspecs_sc_nots_sa_ea typespec_attr
1140 { $$ = declspecs_add_type ($1, $2); }
1143 /* Particular useful classes of declspecs. */
1145 declspecs_nosc_ts_nosa_noea
1146 | declspecs_nosc_ts_nosa_ea
1147 | declspecs_nosc_ts_sa_noea
1148 | declspecs_nosc_ts_sa_ea
1149 | declspecs_sc_ts_nosa_noea
1150 | declspecs_sc_ts_nosa_ea
1151 | declspecs_sc_ts_sa_noea
1152 | declspecs_sc_ts_sa_ea
1156 declspecs_nosc_nots_nosa_noea
1157 | declspecs_nosc_nots_nosa_ea
1158 | declspecs_nosc_nots_sa_noea
1159 | declspecs_nosc_nots_sa_ea
1160 | declspecs_sc_nots_nosa_noea
1161 | declspecs_sc_nots_nosa_ea
1162 | declspecs_sc_nots_sa_noea
1163 | declspecs_sc_nots_sa_ea
1167 declspecs_nosc_ts_nosa_noea
1168 | declspecs_nosc_ts_nosa_ea
1169 | declspecs_sc_ts_nosa_noea
1170 | declspecs_sc_ts_nosa_ea
1173 declspecs_nots_nosa:
1174 declspecs_nosc_nots_nosa_noea
1175 | declspecs_nosc_nots_nosa_ea
1176 | declspecs_sc_nots_nosa_noea
1177 | declspecs_sc_nots_nosa_ea
1181 declspecs_nosc_ts_nosa_noea
1182 | declspecs_nosc_ts_nosa_ea
1183 | declspecs_nosc_ts_sa_noea
1184 | declspecs_nosc_ts_sa_ea
1187 declspecs_nosc_nots:
1188 declspecs_nosc_nots_nosa_noea
1189 | declspecs_nosc_nots_nosa_ea
1190 | declspecs_nosc_nots_sa_noea
1191 | declspecs_nosc_nots_sa_ea
1195 declspecs_nosc_ts_nosa_noea
1196 | declspecs_nosc_ts_nosa_ea
1197 | declspecs_nosc_ts_sa_noea
1198 | declspecs_nosc_ts_sa_ea
1199 | declspecs_nosc_nots_nosa_noea
1200 | declspecs_nosc_nots_nosa_ea
1201 | declspecs_nosc_nots_sa_noea
1202 | declspecs_nosc_nots_sa_ea
1206 declspecs_nosc_nots_nosa_noea
1207 | declspecs_nosc_nots_nosa_ea
1208 | declspecs_nosc_nots_sa_noea
1209 | declspecs_nosc_nots_sa_ea
1210 | declspecs_nosc_ts_nosa_noea
1211 | declspecs_nosc_ts_nosa_ea
1212 | declspecs_nosc_ts_sa_noea
1213 | declspecs_nosc_ts_sa_ea
1214 | declspecs_sc_nots_nosa_noea
1215 | declspecs_sc_nots_nosa_ea
1216 | declspecs_sc_nots_sa_noea
1217 | declspecs_sc_nots_sa_ea
1218 | declspecs_sc_ts_nosa_noea
1219 | declspecs_sc_ts_nosa_ea
1220 | declspecs_sc_ts_sa_noea
1221 | declspecs_sc_ts_sa_ea
1224 /* A (possibly empty) sequence of type qualifiers and attributes. */
1225 maybe_type_quals_attrs:
1228 | declspecs_nosc_nots
1232 /* A type specifier (but not a type qualifier).
1233 Once we have seen one of these in a declaration,
1234 if a typedef name appears then it is being redeclared.
1236 The _reserved versions start with a reserved word and may appear anywhere
1237 in the declaration specifiers; the _nonreserved versions may only
1238 appear before any other type specifiers, and after that are (if names)
1241 FIXME: should the _nonreserved version be restricted to names being
1242 redeclared only? The other entries there relate only the GNU extensions
1243 and Objective C, and are historically parsed thus, and don't make sense
1244 after other type specifiers, but it might be cleaner to count them as
1247 _attr means: specifiers that either end with attributes,
1248 or are such that any following attributes would
1249 be parsed as part of the specifier.
1251 _nonattr: other specifiers not ending with attributes. */
1254 typespec_reserved_nonattr
1255 | typespec_nonreserved_nonattr
1259 typespec_reserved_attr
1262 typespec_reserved_nonattr:
1264 { OBJC_NEED_RAW_IDENTIFIER (1);
1265 $$.kind = ctsk_resword;
1270 typespec_reserved_attr:
1274 typespec_nonreserved_nonattr:
1276 { /* For a typedef name, record the meaning, not the name.
1277 In case of `foo foo, bar;'. */
1278 $$.kind = ctsk_typedef;
1279 $$.spec = lookup_name ($1); }
1281 | CLASSNAME protocolrefs
1282 { $$.kind = ctsk_objc;
1283 $$.spec = objc_get_protocol_qualified_type ($1, $2); }
1284 | OBJECTNAME protocolrefs
1285 { $$.kind = ctsk_objc;
1286 $$.spec = objc_get_protocol_qualified_type ($1, $2); }
1288 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1289 - nisse@lysator.liu.se */
1290 | non_empty_protocolrefs
1291 { $$.kind = ctsk_objc;
1292 $$.spec = objc_get_protocol_qualified_type (NULL_TREE, $1); }
1294 | typeof '(' expr ')'
1295 { skip_evaluation--;
1297 if (TREE_CODE ($3.value) == COMPONENT_REF
1298 && DECL_C_BIT_FIELD (TREE_OPERAND ($3.value, 1)))
1299 error ("%<typeof%> applied to a bit-field");
1300 $$.kind = ctsk_typeof;
1301 $$.spec = TREE_TYPE ($3.value);
1302 pop_maybe_used (variably_modified_type_p ($$.spec,
1304 | typeof '(' typename ')'
1305 { skip_evaluation--;
1307 $$.kind = ctsk_typeof;
1308 $$.spec = groktypename ($3);
1309 pop_maybe_used (variably_modified_type_p ($$.spec,
1313 /* typespec_nonreserved_attr does not exist. */
1317 | initdecls ',' maybe_resetattrs initdcl
1322 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1326 declarator maybeasm maybe_attribute '='
1327 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1328 chainon ($3, all_prefix_attributes));
1329 start_init ($<ttype>$, $2, global_bindings_p ()); }
1331 /* Note how the declaration of the variable is in effect while its init is parsed! */
1333 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1334 finish_decl ($<ttype>5, $6.value, $2); }
1335 | declarator maybeasm maybe_attribute
1336 { tree d = start_decl ($1, current_declspecs, false,
1337 chainon ($3, all_prefix_attributes));
1338 finish_decl (d, NULL_TREE, $2);
1343 notype_declarator maybeasm maybe_attribute '='
1344 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1345 chainon ($3, all_prefix_attributes));
1346 start_init ($<ttype>$, $2, global_bindings_p ()); }
1348 /* Note how the declaration of the variable is in effect while its init is parsed! */
1350 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1351 finish_decl ($<ttype>5, $6.value, $2); }
1352 | notype_declarator maybeasm maybe_attribute
1353 { tree d = start_decl ($1, current_declspecs, false,
1354 chainon ($3, all_prefix_attributes));
1355 finish_decl (d, NULL_TREE, $2); }
1357 /* the * rules are dummies to accept the Apollo extended syntax
1358 so that the header files compile. */
1369 | attributes attribute
1370 { $$ = chainon ($1, $2); }
1374 ATTRIBUTE stop_string_translation
1375 '(' '(' attribute_list ')' ')' start_string_translation
1377 | ATTRIBUTE error start_string_translation
1384 | attribute_list ',' attrib
1385 { $$ = chainon ($1, $3); }
1392 { $$ = build_tree_list ($1, NULL_TREE); }
1393 | any_word '(' IDENTIFIER ')'
1394 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1395 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1396 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1397 | any_word '(' exprlist ')'
1398 { $$ = build_tree_list ($1, $3); }
1401 /* This still leaves out most reserved keywords,
1402 shouldn't we include them? */
1416 /* Initializers. `init' is the entry point. */
1422 { really_start_incremental_init (NULL_TREE); }
1423 initlist_maybe_comma '}'
1424 { $$ = pop_init_level (0); }
1426 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
1429 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1430 initlist_maybe_comma:
1433 pedwarn ("ISO C forbids empty initializer braces"); }
1434 | initlist1 maybecomma
1439 | initlist1 ',' initelt
1442 /* `initelt' is a single element of an initializer.
1443 It may use braces. */
1445 designator_list '=' initval
1446 { if (pedantic && !flag_isoc99)
1447 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1448 | designator initval
1450 pedwarn ("obsolete use of designated initializer without %<=%>"); }
1452 { set_init_label ($1);
1454 pedwarn ("obsolete use of designated initializer with %<:%>"); }
1462 { push_init_level (0); }
1463 initlist_maybe_comma '}'
1464 { process_init_element (pop_init_level (0)); }
1466 { process_init_element ($1); }
1472 | designator_list designator
1477 { set_init_label ($2); }
1478 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1479 { set_init_index ($2.value, $4.value);
1481 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1482 | '[' expr_no_commas ']'
1483 { set_init_index ($2.value, NULL_TREE); }
1489 pedwarn ("ISO C forbids nested functions");
1491 push_function_context ();
1492 if (!start_function (current_declspecs, $1,
1493 all_prefix_attributes))
1495 pop_function_context ();
1499 old_style_parm_decls save_location
1500 { tree decl = current_function_decl;
1501 DECL_SOURCE_LOCATION (decl) = $4;
1502 store_parm_decls (); }
1503 /* This used to use compstmt_or_error. That caused a bug with
1504 input `f(g) int g {}', where the use of YYERROR1 above caused
1505 an error which then was handled by compstmt_or_error. There
1506 followed a repeated execution of that same rule, which called
1507 YYERROR1 again, and so on. */
1509 { tree decl = current_function_decl;
1512 pop_function_context ();
1513 add_stmt (build_stmt (DECL_EXPR, decl)); }
1516 notype_nested_function:
1519 pedwarn ("ISO C forbids nested functions");
1521 push_function_context ();
1522 if (!start_function (current_declspecs, $1,
1523 all_prefix_attributes))
1525 pop_function_context ();
1529 old_style_parm_decls save_location
1530 { tree decl = current_function_decl;
1531 DECL_SOURCE_LOCATION (decl) = $4;
1532 store_parm_decls (); }
1533 /* This used to use compstmt_or_error. That caused a bug with
1534 input `f(g) int g {}', where the use of YYERROR1 above caused
1535 an error which then was handled by compstmt_or_error. There
1536 followed a repeated execution of that same rule, which called
1537 YYERROR1 again, and so on. */
1539 { tree decl = current_function_decl;
1542 pop_function_context ();
1543 add_stmt (build_stmt (DECL_EXPR, decl)); }
1546 /* Any kind of declarator (thus, all declarators allowed
1547 after an explicit typespec). */
1550 after_type_declarator
1554 /* A declarator that is allowed only after an explicit typespec. */
1556 after_type_declarator:
1557 '(' maybe_attribute after_type_declarator ')'
1558 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1559 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1560 { $$ = build_function_declarator ($3, $1); }
1561 | after_type_declarator array_declarator %prec '.'
1562 { $$ = set_array_declarator_inner ($2, $1, false); }
1563 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1564 { $$ = make_pointer_declarator ($2, $3); }
1566 { $$ = build_id_declarator ($1); }
1569 { $$ = build_id_declarator ($1); }
1573 /* Kinds of declarator that can appear in a parameter list
1574 in addition to notype_declarator. This is like after_type_declarator
1575 but does not allow a typedef name in parentheses as an identifier
1576 (because it would conflict with a function with that typedef as arg). */
1578 parm_declarator_starttypename
1579 | parm_declarator_nostarttypename
1582 parm_declarator_starttypename:
1583 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1584 { $$ = build_function_declarator ($3, $1); }
1585 | parm_declarator_starttypename array_declarator %prec '.'
1586 { $$ = set_array_declarator_inner ($2, $1, false); }
1588 { $$ = build_id_declarator ($1); }
1591 { $$ = build_id_declarator ($1); }
1595 parm_declarator_nostarttypename:
1596 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1597 { $$ = build_function_declarator ($3, $1); }
1598 | parm_declarator_nostarttypename array_declarator %prec '.'
1599 { $$ = set_array_declarator_inner ($2, $1, false); }
1600 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1601 { $$ = make_pointer_declarator ($2, $3); }
1602 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1603 { $$ = make_pointer_declarator ($2, $3); }
1604 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1605 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1608 /* A declarator allowed whether or not there has been
1609 an explicit typespec. These cannot redeclare a typedef-name. */
1612 notype_declarator '(' parmlist_or_identifiers %prec '.'
1613 { $$ = build_function_declarator ($3, $1); }
1614 | '(' maybe_attribute notype_declarator ')'
1615 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1616 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1617 { $$ = make_pointer_declarator ($2, $3); }
1618 | notype_declarator array_declarator %prec '.'
1619 { $$ = set_array_declarator_inner ($2, $1, false); }
1621 { $$ = build_id_declarator ($1); }
1645 /* structsp_attr: struct/union/enum specifiers that either
1646 end with attributes, or are such that any following attributes would
1647 be parsed as part of the struct/union/enum specifier.
1649 structsp_nonattr: other struct/union/enum specifiers. */
1652 struct_head identifier '{'
1653 { $<ttype>$ = start_struct (RECORD_TYPE, $2);
1654 /* Start scope of tag before parsing components. */
1656 component_decl_list '}' maybe_attribute
1657 { $$.spec = finish_struct ($<ttype>4, nreverse ($5),
1659 $$.kind = ctsk_tagdef; }
1660 | struct_head '{' component_decl_list '}' maybe_attribute
1661 { $$.spec = finish_struct (start_struct (RECORD_TYPE,
1663 nreverse ($3), chainon ($1, $5));
1664 $$.kind = ctsk_tagdef;
1666 | union_head identifier '{'
1667 { $<ttype>$ = start_struct (UNION_TYPE, $2); }
1668 component_decl_list '}' maybe_attribute
1669 { $$.spec = finish_struct ($<ttype>4, nreverse ($5),
1671 $$.kind = ctsk_tagdef; }
1672 | union_head '{' component_decl_list '}' maybe_attribute
1673 { $$.spec = finish_struct (start_struct (UNION_TYPE,
1675 nreverse ($3), chainon ($1, $5));
1676 $$.kind = ctsk_tagdef;
1678 | enum_head identifier '{'
1679 { $<ttype>$ = start_enum ($2); }
1680 enumlist maybecomma_warn '}' maybe_attribute
1681 { $$.spec = finish_enum ($<ttype>4, nreverse ($5),
1683 $$.kind = ctsk_tagdef; }
1685 { $<ttype>$ = start_enum (NULL_TREE); }
1686 enumlist maybecomma_warn '}' maybe_attribute
1687 { $$.spec = finish_enum ($<ttype>3, nreverse ($4),
1689 $$.kind = ctsk_tagdef; }
1693 struct_head identifier
1694 { $$ = parser_xref_tag (RECORD_TYPE, $2); }
1695 | union_head identifier
1696 { $$ = parser_xref_tag (UNION_TYPE, $2); }
1697 | enum_head identifier
1698 { $$ = parser_xref_tag (ENUMERAL_TYPE, $2);
1699 /* In ISO C, enumerated types can be referred to
1700 only if already defined. */
1701 if (pedantic && !COMPLETE_TYPE_P ($$.spec))
1702 pedwarn ("ISO C forbids forward references to %<enum%> types"); }
1713 { if (pedantic && !flag_isoc99)
1714 pedwarn ("comma at end of enumerator list"); }
1717 /* We chain the components in reverse order. They are put in forward
1718 order in structsp_attr.
1720 Note that component_declarator returns single decls, so components
1721 and components_notype can use TREE_CHAIN directly, wheras components
1722 and components_notype return lists (of comma separated decls), so
1723 component_decl_list and component_decl_list2 must use chainon.
1725 The theory behind all this is that there will be more semicolon
1726 separated fields than comma separated fields, and so we'll be
1727 minimizing the number of node traversals required by chainon. */
1729 component_decl_list:
1730 component_decl_list2
1732 | component_decl_list2 component_decl
1733 { $$ = chainon ($2, $1);
1734 pedwarn ("no semicolon at end of struct or union"); }
1737 component_decl_list2: /* empty */
1739 | component_decl_list2 component_decl ';'
1740 { $$ = chainon ($2, $1); }
1741 | component_decl_list2 ';'
1743 pedwarn ("extra semicolon in struct or union specified"); }
1745 /* foo(sizeof(struct{ @defs(ClassName)})); */
1746 | AT_DEFS '(' CLASSNAME ')'
1747 { $$ = nreverse (objc_get_class_ivars ($3)); }
1752 declspecs_nosc_ts setspecs components
1754 POP_DECLSPEC_STACK; }
1755 | declspecs_nosc_ts setspecs
1757 /* Support for unnamed structs or unions as members of
1758 structs or unions (which is [a] useful and [b] supports
1760 $$ = grokfield (build_id_declarator (NULL_TREE),
1761 current_declspecs, NULL_TREE);
1762 POP_DECLSPEC_STACK; }
1763 | declspecs_nosc_nots setspecs components_notype
1765 POP_DECLSPEC_STACK; }
1766 | declspecs_nosc_nots
1768 pedwarn ("ISO C forbids member declarations with no members");
1769 shadow_tag_warned (finish_declspecs ($1), pedantic);
1773 | extension component_decl
1775 RESTORE_EXT_FLAGS ($1); }
1779 component_declarator
1780 | components ',' maybe_resetattrs component_declarator
1781 { TREE_CHAIN ($4) = $1; $$ = $4; }
1785 component_notype_declarator
1786 | components_notype ',' maybe_resetattrs component_notype_declarator
1787 { TREE_CHAIN ($4) = $1; $$ = $4; }
1790 component_declarator:
1791 declarator maybe_attribute
1792 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1793 decl_attributes (&$$,
1794 chainon ($2, all_prefix_attributes), 0); }
1795 | declarator ':' expr_no_commas maybe_attribute
1796 { $$ = grokfield ($1, current_declspecs, $3.value);
1797 decl_attributes (&$$,
1798 chainon ($4, all_prefix_attributes), 0); }
1799 | ':' expr_no_commas maybe_attribute
1800 { $$ = grokfield (build_id_declarator (NULL_TREE),
1801 current_declspecs, $2.value);
1802 decl_attributes (&$$,
1803 chainon ($3, all_prefix_attributes), 0); }
1806 component_notype_declarator:
1807 notype_declarator maybe_attribute
1808 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1809 decl_attributes (&$$,
1810 chainon ($2, all_prefix_attributes), 0); }
1811 | notype_declarator ':' expr_no_commas maybe_attribute
1812 { $$ = grokfield ($1, current_declspecs, $3.value);
1813 decl_attributes (&$$,
1814 chainon ($4, all_prefix_attributes), 0); }
1815 | ':' expr_no_commas maybe_attribute
1816 { $$ = grokfield (build_id_declarator (NULL_TREE),
1817 current_declspecs, $2.value);
1818 decl_attributes (&$$,
1819 chainon ($3, all_prefix_attributes), 0); }
1822 /* We chain the enumerators in reverse order.
1823 They are put in forward order in structsp_attr. */
1827 | enumlist ',' enumerator
1828 { if ($1 == error_mark_node)
1831 TREE_CHAIN ($3) = $1, $$ = $3; }
1833 { $$ = error_mark_node; }
1839 { $$ = build_enumerator ($1, NULL_TREE); }
1840 | identifier '=' expr_no_commas
1841 { $$ = build_enumerator ($1, $3.value); }
1846 { pending_xref_error ();
1847 $<dsptype>$ = finish_declspecs ($1); }
1849 { $$ = XOBNEW (&parser_obstack, struct c_type_name);
1850 $$->specs = $<dsptype>2;
1851 $$->declarator = $3; }
1854 absdcl: /* an absolute declarator */
1856 { $$ = build_id_declarator (NULL_TREE); }
1860 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1862 { $$ = build_c_parm (current_declspecs, all_prefix_attributes,
1863 build_id_declarator (NULL_TREE)); }
1865 { $$ = build_c_parm (current_declspecs, all_prefix_attributes,
1867 | absdcl1_noea attributes
1868 { $$ = build_c_parm (current_declspecs,
1869 chainon ($2, all_prefix_attributes),
1873 absdcl1: /* a nonempty absolute declarator */
1880 | '*' maybe_type_quals_attrs absdcl1_noea
1881 { $$ = make_pointer_declarator ($2, $3); }
1885 '*' maybe_type_quals_attrs
1886 { $$ = make_pointer_declarator
1887 ($2, build_id_declarator (NULL_TREE)); }
1888 | '*' maybe_type_quals_attrs absdcl1_ea
1889 { $$ = make_pointer_declarator ($2, $3); }
1893 '(' maybe_attribute absdcl1 ')'
1894 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1895 | direct_absdcl1 '(' parmlist
1896 { $$ = build_function_declarator ($3, $1); }
1897 | direct_absdcl1 array_declarator
1898 { $$ = set_array_declarator_inner ($2, $1, true); }
1900 { $$ = build_function_declarator
1901 ($2, build_id_declarator (NULL_TREE)); }
1903 { $$ = set_array_declarator_inner
1904 ($1, build_id_declarator (NULL_TREE), true); }
1907 /* The [...] part of a declarator for an array type. */
1910 '[' maybe_type_quals_attrs expr_no_commas ']'
1911 { $$ = build_array_declarator ($3.value, $2, false, false); }
1912 | '[' maybe_type_quals_attrs ']'
1913 { $$ = build_array_declarator (NULL_TREE, $2, false, false); }
1914 | '[' maybe_type_quals_attrs '*' ']'
1915 { $$ = build_array_declarator (NULL_TREE, $2, false, true); }
1916 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1917 { $$ = build_array_declarator ($4.value, $3, true, false); }
1918 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1919 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1920 { $$ = build_array_declarator ($4.value, $2, true, false); }
1923 /* A nonempty series of declarations and statements (possibly followed by
1924 some labels) that can form the body of a compound statement.
1925 NOTE: we don't allow labels on declarations; this might seem like a
1926 natural extension, but there would be a conflict between attributes
1927 on the label and prefix attributes on the declaration. */
1930 lineno_stmt_decl_or_labels_ending_stmt
1931 | lineno_stmt_decl_or_labels_ending_decl
1932 | lineno_stmt_decl_or_labels_ending_label
1934 error ("label at end of compound statement");
1936 | lineno_stmt_decl_or_labels_ending_error
1939 lineno_stmt_decl_or_labels_ending_stmt:
1941 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1942 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1943 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1944 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
1947 lineno_stmt_decl_or_labels_ending_decl:
1949 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
1951 if ((pedantic && !flag_isoc99)
1952 || warn_declaration_after_statement)
1953 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
1955 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
1956 | lineno_stmt_decl_or_labels_ending_error lineno_decl
1959 lineno_stmt_decl_or_labels_ending_label:
1961 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
1962 | lineno_stmt_decl_or_labels_ending_decl lineno_label
1963 | lineno_stmt_decl_or_labels_ending_label lineno_label
1964 | lineno_stmt_decl_or_labels_ending_error lineno_label
1967 lineno_stmt_decl_or_labels_ending_error:
1969 | lineno_stmt_decl_or_labels errstmt
1972 lineno_stmt_decl_or_labels:
1973 lineno_stmt_decl_or_labels_ending_stmt
1974 | lineno_stmt_decl_or_labels_ending_decl
1975 | lineno_stmt_decl_or_labels_ending_label
1976 | lineno_stmt_decl_or_labels_ending_error
1982 /* Start and end blocks created for the new scopes of C99. */
1983 c99_block_start: /* empty */
1984 { $$ = c_begin_compound_stmt (flag_isoc99); }
1987 /* Read zero or more forward-declarations for labels
1988 that nested functions can jump to. */
1993 pedwarn ("ISO C forbids label declarations"); }
1998 | label_decls label_decl
2002 LABEL identifiers_or_typenames ';'
2004 for (link = $2; link; link = TREE_CHAIN (link))
2006 tree label = declare_label (TREE_VALUE (link));
2007 C_DECLARED_LABEL_FLAG (label) = 1;
2008 add_stmt (build_stmt (DECL_EXPR, label));
2013 /* This is the body of a function definition.
2014 It causes syntax errors to ignore to the next openbrace. */
2021 compstmt_start: '{' { $$ = c_begin_compound_stmt (true); }
2024 compstmt_nostart: '}'
2025 | maybe_label_decls compstmt_contents_nonempty '}'
2028 compstmt_contents_nonempty:
2033 compstmt_primary_start:
2035 { if (cur_stmt_list == NULL)
2037 error ("braced-group within expression allowed "
2038 "only inside a function");
2041 $$ = c_begin_stmt_expr ();
2045 compstmt: compstmt_start compstmt_nostart
2046 { $$ = c_end_compound_stmt ($1, true); }
2049 /* The forced readahead in here is because we might be at the end of a
2050 line, and the line and file won't be bumped until yylex absorbs the
2051 first token on the next line. */
2054 { if (yychar == YYEMPTY)
2056 $$ = input_location; }
2061 | lineno_labels lineno_label
2064 /* A labeled statement. In C99 it also generates an implicit block. */
2065 c99_block_lineno_labeled_stmt:
2066 c99_block_start lineno_labels lineno_stmt
2067 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2073 /* Two cases cannot and do not have line numbers associated:
2074 If stmt is degenerate, such as "2;", then stmt is an
2075 INTEGER_CST, which cannot hold line numbers. But that's
2076 ok because the statement will either be changed to a
2077 MODIFY_EXPR during gimplification of the statement expr,
2078 or discarded. If stmt was compound, but without new
2079 variables, we will have skipped the creation of a BIND
2080 and will have a bare STATEMENT_LIST. But that's ok
2081 because (recursively) all of the component statments
2082 should already have line numbers assigned. */
2083 if ($2 && EXPR_P ($2))
2084 SET_EXPR_LOCATION ($2, $1);
2090 { if ($2) SET_EXPR_LOCATION ($2, $1); }
2093 condition: save_location expr
2094 { $$ = lang_hooks.truthvalue_conversion ($2.value);
2096 SET_EXPR_LOCATION ($$, $1); }
2099 /* Implement -Wparenthesis by special casing IF statement directly nested
2100 within IF statement. This requires some amount of duplication of the
2101 productions under c99_block_lineno_labeled_stmt in order to work out.
2102 But it's still likely more maintainable than lots of state outside the
2106 c99_block_start lineno_labels if_statement
2107 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2111 c99_block_start lineno_labels ';'
2112 { if (extra_warnings)
2113 add_stmt (build (NOP_EXPR, NULL_TREE, NULL_TREE));
2114 $$ = c_end_compound_stmt ($1, flag_isoc99); }
2115 | c99_block_lineno_labeled_stmt
2119 IF c99_block_start save_location '(' condition ')'
2120 if_statement_1 ELSE if_statement_2
2121 { c_finish_if_stmt ($3, $5, $7, $9, true);
2122 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2123 | IF c99_block_start save_location '(' condition ')'
2124 if_statement_2 ELSE if_statement_2
2125 { c_finish_if_stmt ($3, $5, $7, $9, false);
2126 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2127 | IF c99_block_start save_location '(' condition ')'
2128 if_statement_1 %prec IF
2129 { c_finish_if_stmt ($3, $5, $7, NULL, true);
2130 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2131 | IF c99_block_start save_location '(' condition ')'
2132 if_statement_2 %prec IF
2133 { c_finish_if_stmt ($3, $5, $7, NULL, false);
2134 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2137 start_break: /* empty */
2138 { $$ = c_break_label; c_break_label = NULL; }
2141 start_continue: /* empty */
2142 { $$ = c_cont_label; c_cont_label = NULL; }
2146 WHILE c99_block_start save_location '(' condition ')'
2147 start_break start_continue c99_block_lineno_labeled_stmt
2148 { c_finish_loop ($3, $5, NULL, $9, c_break_label,
2149 c_cont_label, true);
2150 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2151 c_break_label = $7; c_cont_label = $8; }
2155 DO c99_block_start save_location start_break start_continue
2156 c99_block_lineno_labeled_stmt WHILE
2157 { $<ttype>$ = c_break_label; c_break_label = $4; }
2158 { $<ttype>$ = c_cont_label; c_cont_label = $5; }
2159 '(' condition ')' ';'
2160 { c_finish_loop ($3, $11, NULL, $6, $<ttype>8,
2162 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2174 { c_finish_expr_stmt ($1); }
2176 { check_for_loop_decls (); }
2179 for_cond_expr: save_location xexpr
2182 $$ = lang_hooks.truthvalue_conversion ($2);
2184 SET_EXPR_LOCATION ($$, $1);
2191 for_incr_expr: xexpr
2192 { $$ = c_process_expr_stmt ($1); }
2196 FOR c99_block_start '(' for_init_stmt
2197 save_location for_cond_expr ';' for_incr_expr ')'
2198 start_break start_continue c99_block_lineno_labeled_stmt
2199 { c_finish_loop ($5, $6, $8, $12, c_break_label,
2200 c_cont_label, true);
2201 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2202 c_break_label = $10; c_cont_label = $11; }
2206 SWITCH c99_block_start '(' expr ')'
2207 { $<ttype>$ = c_start_case ($4.value); }
2208 start_break c99_block_lineno_labeled_stmt
2209 { c_finish_case ($8);
2211 add_stmt (build (LABEL_EXPR, void_type_node,
2214 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2217 /* Parse a single real statement, not including any labels or compounds. */
2220 { $$ = c_finish_expr_stmt ($1.value); }
2232 { $$ = c_finish_bc_stmt (&c_break_label, true); }
2234 { $$ = c_finish_bc_stmt (&c_cont_label, false); }
2236 { $$ = c_finish_return (NULL_TREE); }
2238 { $$ = c_finish_return ($2.value); }
2240 | GOTO identifier ';'
2241 { $$ = c_finish_goto_label ($2); }
2243 { $$ = c_finish_goto_ptr ($3.value); }
2248 { $$ = objc_build_throw_stmt ($2.value); }
2250 { $$ = objc_build_throw_stmt (NULL_TREE); }
2251 | objc_try_catch_stmt
2253 | AT_SYNCHRONIZED save_location '(' expr ')' compstmt
2254 { objc_build_synchronized ($2, $4.value, $6); $$ = NULL_TREE; }
2258 AT_CATCH '(' parm ')'
2259 { objc_begin_catch_clause (grokparm ($3)); }
2263 objc_catch_prefix '{' compstmt_nostart
2264 { objc_finish_catch_clause (); }
2265 | objc_catch_prefix '{' error '}'
2266 { objc_finish_catch_clause (); }
2269 objc_opt_catch_list:
2271 | objc_opt_catch_list objc_catch_clause
2274 objc_try_catch_clause:
2275 AT_TRY save_location compstmt
2276 { objc_begin_try_stmt ($2, $3); }
2280 objc_finally_clause:
2281 AT_FINALLY save_location compstmt
2282 { objc_build_finally_clause ($2, $3); }
2285 objc_try_catch_stmt:
2286 objc_try_catch_clause
2287 { objc_finish_try_stmt (); }
2288 | objc_try_catch_clause objc_finally_clause
2289 { objc_finish_try_stmt (); }
2293 /* Parse a single or compound real statement, not including any labels. */
2296 { add_stmt ($1); $$ = NULL_TREE; }
2300 /* Any kind of label, including jump labels and case labels.
2301 ANSI C accepts labels only before statements, but we allow them
2302 also at the end of a compound statement. */
2304 label: CASE expr_no_commas ':'
2305 { $$ = do_case ($2.value, NULL_TREE); }
2306 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2307 { $$ = do_case ($2.value, $4.value); }
2309 { $$ = do_case (NULL_TREE, NULL_TREE); }
2310 | identifier save_location ':' maybe_attribute
2311 { tree label = define_label ($2, $1);
2314 decl_attributes (&label, $4, 0);
2315 $$ = add_stmt (build_stmt (LABEL_EXPR, label));
2322 /* Asm expressions and statements */
2324 /* simple_asm_expr is used in restricted contexts, where a full
2325 expression with inputs and outputs does not make sense. */
2327 ASM_KEYWORD stop_string_translation
2328 '(' STRING ')' start_string_translation
2332 /* maybeasm: used for assembly names for declarations */
2339 /* asmdef: asm() outside a function body. */
2342 { assemble_asm ($1); }
2343 | ASM_KEYWORD error start_string_translation ';'
2347 /* Full-blown asm statement with inputs, outputs, clobbers, and
2348 volatile tag allowed. */
2350 ASM_KEYWORD maybe_volatile stop_string_translation
2351 '(' asm_argument ')' start_string_translation ';'
2352 { $$ = build_asm_stmt ($2, $5); }
2358 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2359 /* output operands */
2360 | STRING ':' asm_operands
2361 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2362 /* output and input operands */
2363 | STRING ':' asm_operands ':' asm_operands
2364 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2365 /* output and input operands and clobbers */
2366 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2367 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2370 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2376 { if ($1 != ridpointers[RID_VOLATILE])
2378 warning ("%E qualifier ignored on asm", $1);
2386 /* These are the operands other than the first string and colon
2387 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2388 asm_operands: /* empty */
2390 | nonnull_asm_operands
2393 nonnull_asm_operands:
2395 | nonnull_asm_operands ',' asm_operand
2396 { $$ = chainon ($1, $3); }
2400 STRING start_string_translation '(' expr ')' stop_string_translation
2401 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1),
2403 | '[' identifier ']' STRING start_string_translation
2404 '(' expr ')' stop_string_translation
2405 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2406 IDENTIFIER_POINTER ($2));
2407 $$ = build_tree_list (build_tree_list ($2, $4), $7.value); }
2412 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2413 | asm_clobbers ',' STRING
2414 { $$ = tree_cons (NULL_TREE, $3, $1); }
2417 stop_string_translation:
2418 { c_lex_string_translate = 0; }
2421 start_string_translation:
2422 { c_lex_string_translate = 1; }
2426 /* This is what appears inside the parens in a function declarator.
2427 Its value is a list of ..._TYPE nodes. Attributes must appear here
2428 to avoid a conflict with their appearance after an open parenthesis
2429 in an abstract declarator, as in
2430 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2434 declare_parm_level (); }
2443 { mark_forward_parm_decls (); }
2445 { /* Dummy action so attributes are in known place
2446 on parser stack. */ }
2450 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2457 /* This is what appears inside the parens in a function declarator.
2458 Its value is represented in the format that grokdeclarator expects. */
2459 parmlist_2: /* empty */
2460 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2466 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2470 /* Suppress -Wold-style-definition for this case. */
2471 $$->types = error_mark_node;
2472 error ("ISO C requires a named argument before %<...%>");
2475 { $$ = get_parm_info (/*ellipsis=*/false); }
2476 | parms ',' ELLIPSIS
2477 { $$ = get_parm_info (/*ellipsis=*/true); }
2482 { push_parm_decl ($1); }
2484 { push_parm_decl ($3); }
2487 /* A single parameter declaration or parameter type name,
2488 as found in a parmlist. */
2490 declspecs_ts setspecs parm_declarator maybe_attribute
2491 { $$ = build_c_parm (current_declspecs,
2492 chainon ($4, all_prefix_attributes), $3);
2493 POP_DECLSPEC_STACK; }
2494 | declspecs_ts setspecs notype_declarator maybe_attribute
2495 { $$ = build_c_parm (current_declspecs,
2496 chainon ($4, all_prefix_attributes), $3);
2497 POP_DECLSPEC_STACK; }
2498 | declspecs_ts setspecs absdcl_maybe_attribute
2500 POP_DECLSPEC_STACK; }
2501 | declspecs_nots setspecs notype_declarator maybe_attribute
2502 { $$ = build_c_parm (current_declspecs,
2503 chainon ($4, all_prefix_attributes), $3);
2504 POP_DECLSPEC_STACK; }
2506 | declspecs_nots setspecs absdcl_maybe_attribute
2508 POP_DECLSPEC_STACK; }
2511 /* The first parm, which must suck attributes from off the top of the parser
2514 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2515 { $$ = build_c_parm (current_declspecs,
2516 chainon ($4, all_prefix_attributes), $3);
2517 POP_DECLSPEC_STACK; }
2518 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2519 { $$ = build_c_parm (current_declspecs,
2520 chainon ($4, all_prefix_attributes), $3);
2521 POP_DECLSPEC_STACK; }
2522 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2524 POP_DECLSPEC_STACK; }
2525 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2526 { $$ = build_c_parm (current_declspecs,
2527 chainon ($4, all_prefix_attributes), $3);
2528 POP_DECLSPEC_STACK; }
2530 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2532 POP_DECLSPEC_STACK; }
2537 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2538 all_prefix_attributes = prefix_attributes; }
2541 /* This is used in a function definition
2542 where either a parmlist or an identifier list is ok.
2543 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2544 parmlist_or_identifiers:
2547 declare_parm_level (); }
2548 parmlist_or_identifiers_1
2553 parmlist_or_identifiers_1:
2556 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2562 /* Make sure we have a parmlist after attributes. */
2563 if ($<ttype>-1 != 0)
2568 /* A nonempty list of identifiers. */
2571 { $$ = build_tree_list (NULL_TREE, $1); }
2572 | identifiers ',' IDENTIFIER
2573 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2576 /* A nonempty list of identifiers, including typenames. */
2577 identifiers_or_typenames:
2579 { $$ = build_tree_list (NULL_TREE, $1); }
2580 | identifiers_or_typenames ',' identifier
2581 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2586 { $$ = SAVE_EXT_FLAGS ();
2588 warn_pointer_arith = 0;
2589 warn_traditional = 0;
2594 /* Objective-C productions. */
2604 objc_finish_implementation ();
2608 /* A nonempty list of identifiers. */
2611 { $$ = build_tree_list (NULL_TREE, $1); }
2612 | identifier_list ',' identifier
2613 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2617 AT_CLASS identifier_list ';'
2619 objc_declare_class ($2);
2624 AT_ALIAS identifier identifier ';'
2626 objc_declare_alias ($2, $3);
2631 ':' identifier { $$ = $2; }
2632 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2636 '{' ivar_decl_list '}'
2641 AT_INTERFACE identifier superclass protocolrefs
2643 objc_start_class_interface ($2, $3, $4);
2647 objc_continue_interface ();
2649 methodprotolist AT_END
2651 objc_finish_interface ();
2654 | AT_IMPLEMENTATION identifier superclass
2656 objc_start_class_implementation ($2, $3);
2660 objc_continue_implementation ();
2663 | AT_INTERFACE identifier '(' identifier ')' protocolrefs
2665 objc_start_category_interface ($2, $4, $6);
2667 methodprotolist AT_END
2669 objc_finish_interface ();
2672 | AT_IMPLEMENTATION identifier '(' identifier ')'
2674 objc_start_category_implementation ($2, $4);
2679 AT_PROTOCOL identifier protocolrefs
2681 objc_pq_context = 1;
2682 objc_start_protocol ($2, $3);
2684 methodprotolist AT_END
2686 objc_pq_context = 0;
2687 objc_finish_interface ();
2689 /* The @protocol forward-declaration production introduces a
2690 reduce/reduce conflict on ';', which should be resolved in
2691 favor of the production 'identifier_list -> identifier'. */
2692 | AT_PROTOCOL identifier_list ';'
2694 objc_declare_protocols ($2);
2703 | non_empty_protocolrefs
2706 non_empty_protocolrefs:
2707 ARITHCOMPARE identifier_list ARITHCOMPARE
2709 if ($1 == LT_EXPR && $3 == GT_EXPR)
2718 | ivar_decl_list visibility_spec ivar_decls
2723 | AT_PRIVATE { objc_set_visibility (2); }
2724 | AT_PROTECTED { objc_set_visibility (0); }
2725 | AT_PUBLIC { objc_set_visibility (1); }
2730 | ivar_decls ivar_decl ';'
2734 pedwarn ("extra semicolon in struct or union specified");
2741 /* Comma-separated ivars are chained together in
2742 reverse order; add them one by one. */
2743 tree ivar = nreverse ($1);
2745 for (; ivar; ivar = TREE_CHAIN (ivar))
2746 objc_add_instance_variable (copy_node (ivar));
2755 pedwarn ("extra semicolon in method definition specified");
2767 objc_set_method_type ($1);
2768 objc_pq_context = 1;
2772 objc_pq_context = 0;
2773 objc_start_method_definition ($3);
2777 objc_finish_method_definition (current_function_decl);
2781 /* the reason for the strange actions in this rule
2782 is so that notype_initdecls when reached via datadef
2783 can find a valid list of type and sc specs in $0. */
2787 | methodprotolist methodproto
2788 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2799 objc_set_method_type ($1);
2800 /* Remember protocol qualifiers in prototypes. */
2801 objc_pq_context = 1;
2805 /* Forget protocol qualifiers here. */
2806 objc_pq_context = 0;
2807 objc_add_method_declaration ($3);
2813 '(' objc_typename ')' unaryselector
2815 $$ = objc_build_method_signature ($2, $4, NULL_TREE);
2820 $$ = objc_build_method_signature (NULL_TREE, $1, NULL_TREE);
2823 | '(' objc_typename ')' keywordselector optparmlist
2825 $$ = objc_build_method_signature ($2, $4, $5);
2828 | keywordselector optparmlist
2830 $$ = objc_build_method_signature (NULL_TREE, $1, $2);
2834 /* Optional ObjC method parameters follow the C syntax, and may include '...'
2835 to denote a variable number of arguments. */
2838 optparms optellipsis
2840 TREE_OVERFLOW ($$) = $2;
2847 $$ = make_node (TREE_LIST);
2851 $$ = chainon ($1, build_tree_list (NULL_TREE,
2874 | keywordselector keyworddecl
2876 $$ = chainon ($1, $2);
2889 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
2890 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
2891 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
2892 | TYPESPEC | TYPE_QUAL | OBJC_TYPE_QUAL
2900 objc_quals objc_qual
2902 $$ = chainon ($1, build_tree_list (NULL_TREE, $2));
2913 $$ = build_tree_list ($1, groktypename ($2));
2917 $$ = build_tree_list ($1, NULL_TREE);
2922 selector ':' '(' objc_typename ')' identifier
2924 $$ = objc_build_keyword_decl ($1, $4, $6);
2927 | selector ':' identifier
2929 $$ = objc_build_keyword_decl ($1, NULL_TREE, $3);
2932 | ':' '(' objc_typename ')' identifier
2934 $$ = objc_build_keyword_decl (NULL_TREE, $3, $5);
2939 $$ = objc_build_keyword_decl (NULL_TREE, NULL_TREE, $2);
2950 | keywordarglist keywordarg
2952 $$ = chainon ($1, $2);
2960 if (TREE_CHAIN ($1) == NULL_TREE)
2961 /* just return the expr., remove a level of indirection */
2962 $$ = TREE_VALUE ($1);
2964 /* we have a comma expr., we will collapse later */
2970 selector ':' keywordexpr
2972 $$ = build_tree_list ($1, $3);
2976 $$ = build_tree_list (NULL_TREE, $2);
2985 $$ = objc_get_class_reference ($1);
2989 $$ = objc_get_class_reference ($1);
2994 '[' receiver messageargs ']'
2995 { $$ = build_tree_list ($2, $3); }
3005 | keywordnamelist keywordname
3007 $$ = chainon ($1, $2);
3014 $$ = build_tree_list ($1, NULL_TREE);
3018 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3023 AT_SELECTOR '(' selectorarg ')'
3030 AT_PROTOCOL '(' identifier ')'
3036 /* extension to support C-structures in the archiver */
3039 AT_ENCODE '(' typename ')'
3041 $$ = groktypename ($3);
3048 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3049 cpplib.h's token codes into yacc's token codes. */
3051 static enum cpp_ttype last_token;
3053 /* The reserved keyword table. */
3057 ENUM_BITFIELD(rid) rid : 16;
3058 unsigned int disable : 16;
3061 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3063 #define D_C89 0x01 /* not in C89 */
3064 #define D_EXT 0x02 /* GCC extension */
3065 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3066 #define D_OBJC 0x08 /* Objective C only */
3068 static const struct resword reswords[] =
3070 { "_Bool", RID_BOOL, 0 },
3071 { "_Complex", RID_COMPLEX, 0 },
3072 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3073 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3074 { "__alignof", RID_ALIGNOF, 0 },
3075 { "__alignof__", RID_ALIGNOF, 0 },
3076 { "__asm", RID_ASM, 0 },
3077 { "__asm__", RID_ASM, 0 },
3078 { "__attribute", RID_ATTRIBUTE, 0 },
3079 { "__attribute__", RID_ATTRIBUTE, 0 },
3080 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3081 { "__builtin_offsetof", RID_OFFSETOF, 0 },
3082 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3083 { "__builtin_va_arg", RID_VA_ARG, 0 },
3084 { "__complex", RID_COMPLEX, 0 },
3085 { "__complex__", RID_COMPLEX, 0 },
3086 { "__const", RID_CONST, 0 },
3087 { "__const__", RID_CONST, 0 },
3088 { "__extension__", RID_EXTENSION, 0 },
3089 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3090 { "__imag", RID_IMAGPART, 0 },
3091 { "__imag__", RID_IMAGPART, 0 },
3092 { "__inline", RID_INLINE, 0 },
3093 { "__inline__", RID_INLINE, 0 },
3094 { "__label__", RID_LABEL, 0 },
3095 { "__real", RID_REALPART, 0 },
3096 { "__real__", RID_REALPART, 0 },
3097 { "__restrict", RID_RESTRICT, 0 },
3098 { "__restrict__", RID_RESTRICT, 0 },
3099 { "__signed", RID_SIGNED, 0 },
3100 { "__signed__", RID_SIGNED, 0 },
3101 { "__thread", RID_THREAD, 0 },
3102 { "__typeof", RID_TYPEOF, 0 },
3103 { "__typeof__", RID_TYPEOF, 0 },
3104 { "__volatile", RID_VOLATILE, 0 },
3105 { "__volatile__", RID_VOLATILE, 0 },
3106 { "asm", RID_ASM, D_EXT },
3107 { "auto", RID_AUTO, 0 },
3108 { "break", RID_BREAK, 0 },
3109 { "case", RID_CASE, 0 },
3110 { "char", RID_CHAR, 0 },
3111 { "const", RID_CONST, 0 },
3112 { "continue", RID_CONTINUE, 0 },
3113 { "default", RID_DEFAULT, 0 },
3114 { "do", RID_DO, 0 },
3115 { "double", RID_DOUBLE, 0 },
3116 { "else", RID_ELSE, 0 },
3117 { "enum", RID_ENUM, 0 },
3118 { "extern", RID_EXTERN, 0 },
3119 { "float", RID_FLOAT, 0 },
3120 { "for", RID_FOR, 0 },
3121 { "goto", RID_GOTO, 0 },
3122 { "if", RID_IF, 0 },
3123 { "inline", RID_INLINE, D_EXT89 },
3124 { "int", RID_INT, 0 },
3125 { "long", RID_LONG, 0 },
3126 { "register", RID_REGISTER, 0 },
3127 { "restrict", RID_RESTRICT, D_C89 },
3128 { "return", RID_RETURN, 0 },
3129 { "short", RID_SHORT, 0 },
3130 { "signed", RID_SIGNED, 0 },
3131 { "sizeof", RID_SIZEOF, 0 },
3132 { "static", RID_STATIC, 0 },
3133 { "struct", RID_STRUCT, 0 },
3134 { "switch", RID_SWITCH, 0 },
3135 { "typedef", RID_TYPEDEF, 0 },
3136 { "typeof", RID_TYPEOF, D_EXT },
3137 { "union", RID_UNION, 0 },
3138 { "unsigned", RID_UNSIGNED, 0 },
3139 { "void", RID_VOID, 0 },
3140 { "volatile", RID_VOLATILE, 0 },
3141 { "while", RID_WHILE, 0 },
3144 { "id", RID_ID, D_OBJC },
3146 /* These objc keywords are recognized only immediately after
3148 { "class", RID_AT_CLASS, D_OBJC },
3149 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3150 { "defs", RID_AT_DEFS, D_OBJC },
3151 { "encode", RID_AT_ENCODE, D_OBJC },
3152 { "end", RID_AT_END, D_OBJC },
3153 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3154 { "interface", RID_AT_INTERFACE, D_OBJC },
3155 { "private", RID_AT_PRIVATE, D_OBJC },
3156 { "protected", RID_AT_PROTECTED, D_OBJC },
3157 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3158 { "public", RID_AT_PUBLIC, D_OBJC },
3159 { "selector", RID_AT_SELECTOR, D_OBJC },
3160 { "throw", RID_AT_THROW, D_OBJC },
3161 { "try", RID_AT_TRY, D_OBJC },
3162 { "catch", RID_AT_CATCH, D_OBJC },
3163 { "finally", RID_AT_FINALLY, D_OBJC },
3164 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3165 /* These are recognized only in protocol-qualifier context
3167 { "bycopy", RID_BYCOPY, D_OBJC },
3168 { "byref", RID_BYREF, D_OBJC },
3169 { "in", RID_IN, D_OBJC },
3170 { "inout", RID_INOUT, D_OBJC },
3171 { "oneway", RID_ONEWAY, D_OBJC },
3172 { "out", RID_OUT, D_OBJC },
3175 #define N_reswords (sizeof reswords / sizeof (struct resword))
3177 /* Table mapping from RID_* constants to yacc token numbers.
3178 Unfortunately we have to have entries for all the keywords in all
3180 static const short rid_to_yy[RID_MAX] =
3182 /* RID_STATIC */ STATIC,
3183 /* RID_UNSIGNED */ TYPESPEC,
3184 /* RID_LONG */ TYPESPEC,
3185 /* RID_CONST */ TYPE_QUAL,
3186 /* RID_EXTERN */ SCSPEC,
3187 /* RID_REGISTER */ SCSPEC,
3188 /* RID_TYPEDEF */ SCSPEC,
3189 /* RID_SHORT */ TYPESPEC,
3190 /* RID_INLINE */ SCSPEC,
3191 /* RID_VOLATILE */ TYPE_QUAL,
3192 /* RID_SIGNED */ TYPESPEC,
3193 /* RID_AUTO */ SCSPEC,
3194 /* RID_RESTRICT */ TYPE_QUAL,
3197 /* RID_COMPLEX */ TYPESPEC,
3198 /* RID_THREAD */ SCSPEC,
3202 /* RID_VIRTUAL */ 0,
3203 /* RID_EXPLICIT */ 0,
3205 /* RID_MUTABLE */ 0,
3208 /* RID_IN */ OBJC_TYPE_QUAL,
3209 /* RID_OUT */ OBJC_TYPE_QUAL,
3210 /* RID_INOUT */ OBJC_TYPE_QUAL,
3211 /* RID_BYCOPY */ OBJC_TYPE_QUAL,
3212 /* RID_BYREF */ OBJC_TYPE_QUAL,
3213 /* RID_ONEWAY */ OBJC_TYPE_QUAL,
3216 /* RID_INT */ TYPESPEC,
3217 /* RID_CHAR */ TYPESPEC,
3218 /* RID_FLOAT */ TYPESPEC,
3219 /* RID_DOUBLE */ TYPESPEC,
3220 /* RID_VOID */ TYPESPEC,
3221 /* RID_ENUM */ ENUM,
3222 /* RID_STRUCT */ STRUCT,
3223 /* RID_UNION */ UNION,
3225 /* RID_ELSE */ ELSE,
3226 /* RID_WHILE */ WHILE,
3229 /* RID_SWITCH */ SWITCH,
3230 /* RID_CASE */ CASE,
3231 /* RID_DEFAULT */ DEFAULT,
3232 /* RID_BREAK */ BREAK,
3233 /* RID_CONTINUE */ CONTINUE,
3234 /* RID_RETURN */ RETURN,
3235 /* RID_GOTO */ GOTO,
3236 /* RID_SIZEOF */ SIZEOF,
3239 /* RID_ASM */ ASM_KEYWORD,
3240 /* RID_TYPEOF */ TYPEOF,
3241 /* RID_ALIGNOF */ ALIGNOF,
3242 /* RID_ATTRIBUTE */ ATTRIBUTE,
3243 /* RID_VA_ARG */ VA_ARG,
3244 /* RID_EXTENSION */ EXTENSION,
3245 /* RID_IMAGPART */ IMAGPART,
3246 /* RID_REALPART */ REALPART,
3247 /* RID_LABEL */ LABEL,
3249 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3250 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3252 /* RID_FUNCTION_NAME */ FUNC_NAME,
3253 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3254 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3257 /* RID_BOOL */ TYPESPEC,
3261 /* RID_PRIVATE */ 0,
3262 /* RID_PROTECTED */ 0,
3263 /* RID_TEMPLATE */ 0,
3268 /* RID_NAMESPACE */ 0,
3270 /* RID_OFFSETOF */ OFFSETOF,
3271 /* RID_OPERATOR */ 0,
3276 /* RID_TYPENAME */ 0,
3281 /* RID_CONSTCAST */ 0,
3282 /* RID_DYNCAST */ 0,
3283 /* RID_REINTCAST */ 0,
3284 /* RID_STATCAST */ 0,
3287 /* RID_ID */ OBJECTNAME,
3288 /* RID_AT_ENCODE */ AT_ENCODE,
3289 /* RID_AT_END */ AT_END,
3290 /* RID_AT_CLASS */ AT_CLASS,
3291 /* RID_AT_ALIAS */ AT_ALIAS,
3292 /* RID_AT_DEFS */ AT_DEFS,
3293 /* RID_AT_PRIVATE */ AT_PRIVATE,
3294 /* RID_AT_PROTECTED */ AT_PROTECTED,
3295 /* RID_AT_PUBLIC */ AT_PUBLIC,
3296 /* RID_AT_PROTOCOL */ AT_PROTOCOL,
3297 /* RID_AT_SELECTOR */ AT_SELECTOR,
3298 /* RID_AT_THROW */ AT_THROW,
3299 /* RID_AT_TRY */ AT_TRY,
3300 /* RID_AT_CATCH */ AT_CATCH,
3301 /* RID_AT_FINALLY */ AT_FINALLY,
3302 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3303 /* RID_AT_INTERFACE */ AT_INTERFACE,
3304 /* RID_AT_IMPLEMENTATION */ AT_IMPLEMENTATION
3308 init_reswords (void)
3312 int mask = (flag_isoc99 ? 0 : D_C89)
3313 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3315 if (!c_dialect_objc ())
3318 ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
3319 for (i = 0; i < N_reswords; i++)
3321 /* If a keyword is disabled, do not enter it into the table
3322 and so create a canonical spelling that isn't a keyword. */
3323 if (reswords[i].disable & mask)
3326 id = get_identifier (reswords[i].word);
3327 C_RID_CODE (id) = reswords[i].rid;
3328 C_IS_RESERVED_WORD (id) = 1;
3329 ridpointers [(int) reswords[i].rid] = id;
3333 #define NAME(type) cpp_type2name (type)
3336 yyerror (const char *msgid)
3338 c_parse_error (msgid, last_token, yylval.ttype);
3347 int objc_force_identifier = objc_need_raw_identifier;
3348 OBJC_NEED_RAW_IDENTIFIER (0);
3351 if (C_IS_RESERVED_WORD (yylval.ttype))
3353 enum rid rid_code = C_RID_CODE (yylval.ttype);
3356 /* Turn non-typedefed refs to "id" into plain identifiers; this
3357 allows constructs like "void foo(id id);" to work. */
3358 if (rid_code == RID_ID)
3360 decl = lookup_name (yylval.ttype);
3361 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3365 if (!OBJC_IS_AT_KEYWORD (rid_code)
3366 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3369 /* Return the canonical spelling for this keyword. */
3370 yylval.ttype = ridpointers[(int) rid_code];
3371 return rid_to_yy[(int) rid_code];
3375 decl = lookup_name (yylval.ttype);
3378 if (TREE_CODE (decl) == TYPE_DECL)
3384 tree objc_interface_decl = objc_is_class_name (yylval.ttype);
3385 /* ObjC class names are in the same namespace as variables and
3386 typedefs, and hence are shadowed by local declarations. */
3387 if (objc_interface_decl
3388 && (global_bindings_p ()
3389 || (!objc_force_identifier && !decl)))
3391 yylval.ttype = objc_interface_decl;
3404 last_token = c_lex (&yylval.ttype);
3407 case CPP_EQ: return '=';
3408 case CPP_NOT: return '!';
3409 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3410 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3411 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3412 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3413 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3414 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3415 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3416 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3417 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3418 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3419 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3420 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3422 case CPP_COMPL: return '~';
3423 case CPP_AND_AND: return ANDAND;
3424 case CPP_OR_OR: return OROR;
3425 case CPP_QUERY: return '?';
3426 case CPP_OPEN_PAREN: return '(';
3427 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3428 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3429 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3430 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3432 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3433 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3434 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3435 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3436 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3437 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3438 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3439 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3440 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3441 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3443 case CPP_OPEN_SQUARE: return '[';
3444 case CPP_CLOSE_SQUARE: return ']';
3445 case CPP_OPEN_BRACE: return '{';
3446 case CPP_CLOSE_BRACE: return '}';
3447 case CPP_ELLIPSIS: return ELLIPSIS;
3449 case CPP_PLUS_PLUS: return PLUSPLUS;
3450 case CPP_MINUS_MINUS: return MINUSMINUS;
3451 case CPP_DEREF: return POINTSAT;
3452 case CPP_DOT: return '.';
3454 /* The following tokens may affect the interpretation of any
3455 identifiers following, if doing Objective-C. */
3456 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3457 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3458 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3459 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3465 return yylexname ();
3468 /* This only happens in Objective-C; it must be a keyword. */
3469 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3480 case CPP_OBJC_STRING:
3483 /* These tokens are C++ specific (and will not be generated
3484 in C mode, but let's be cautious). */
3486 case CPP_DEREF_STAR:
3492 /* These tokens should not survive translation phase 4. */
3495 error ("syntax error at %qs token", NAME(last_token));
3508 timevar_push (TV_LEX);
3510 timevar_pop (TV_LEX);
3514 /* Function used when yydebug is set, to print a token in more detail. */
3517 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3521 fprintf (file, " [%s]", NAME(last_token));
3532 if (IDENTIFIER_POINTER (t))
3533 fprintf (file, " '%s'", IDENTIFIER_POINTER (t));
3537 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3538 if (TREE_CODE (t) == INTEGER_CST)
3541 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3542 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3548 /* This is not the ideal place to put this, but we have to get it out
3549 of c-lex.c because cp/lex.c has its own version. */
3551 /* Parse the file. */
3559 free (malloced_yyss);
3560 free (malloced_yyvs);
3566 /* Depending on the version of Bison used to compile this grammar,
3567 it may issue generic diagnostics spelled "syntax error" or
3568 "parse error". To prevent this from changing the translation
3569 template randomly, we list all the variants of this particular
3570 diagnostic here. Translators: there is no fine distinction
3571 between diagnostics with "syntax error" in them, and diagnostics
3572 with "parse error" in them. It's okay to give them both the same
3574 const char d1[] = N_("syntax error");
3575 const char d2[] = N_("parse error");
3576 const char d3[] = N_("syntax error; also virtual memory exhausted");
3577 const char d4[] = N_("parse error; also virtual memory exhausted");
3578 const char d5[] = N_("syntax error: cannot back up");
3579 const char d6[] = N_("parse error: cannot back up");
3582 #include "gt-c-parse.h"