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 PTR_VALUE PTR_BASE PTR_EXTENT
152 %token FUNC_NAME OFFSETOF
154 /* Add precedence rules to solve dangling else s/r conflict */
158 /* Define the operator tokens and their precedences.
159 The value is an integer because, if used, it is the tree code
160 to use in the expression made from the operator. */
162 %right <code> ASSIGN '='
163 %right <code> '?' ':'
169 %left <code> EQCOMPARE
170 %left <code> ARITHCOMPARE
171 %left <code> LSHIFT RSHIFT
173 %left <code> '*' '/' '%'
174 %right <code> UNARY PLUSPLUS MINUSMINUS
176 %left <code> POINTSAT '.' '(' '['
178 /* The Objective-C keywords. These are included in C and in
179 Objective C, so that the token codes are the same in both. */
180 %token AT_INTERFACE AT_IMPLEMENTATION AT_END AT_SELECTOR AT_DEFS AT_ENCODE
181 %token CLASSNAME AT_PUBLIC AT_PRIVATE AT_PROTECTED AT_PROTOCOL
182 %token OBJECTNAME AT_CLASS AT_ALIAS
183 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
187 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
188 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
190 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT STRING FUNC_NAME
191 %type <ttype> nonnull_exprlist exprlist
192 %type <exprtype> expr expr_no_commas cast_expr unary_expr primary
193 %type <dsptype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
194 %type <dsptype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
195 %type <dsptype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
196 %type <dsptype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
197 %type <dsptype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
198 %type <dsptype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
199 %type <dsptype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
200 %type <dsptype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
201 %type <dsptype> declspecs_ts declspecs_nots
202 %type <dsptype> declspecs_ts_nosa declspecs_nots_nosa
203 %type <dsptype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
204 %type <dsptype> maybe_type_quals_attrs
205 %type <tstype> typespec_nonattr typespec_attr
206 %type <tstype> typespec_reserved_nonattr typespec_reserved_attr
207 %type <tstype> typespec_nonreserved_nonattr
208 %type <ttype> offsetof_member_designator
210 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
211 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
212 %type <exprtype> init
213 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
214 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
215 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
216 %type <ttype> any_word
218 %type <ttype> compstmt compstmt_start compstmt_primary_start
219 %type <ttype> stmt label stmt_nocomp start_break start_continue
221 %type <ttype> c99_block_start c99_block_lineno_labeled_stmt
222 %type <ttype> if_statement_1 if_statement_2
223 %type <dtrtype> declarator
224 %type <dtrtype> notype_declarator after_type_declarator
225 %type <dtrtype> parm_declarator
226 %type <dtrtype> parm_declarator_starttypename parm_declarator_nostarttypename
227 %type <dtrtype> array_declarator
229 %type <tstype> structsp_attr structsp_nonattr
230 %type <ttype> component_decl_list component_decl_list2
231 %type <ttype> component_decl components components_notype component_declarator
232 %type <ttype> component_notype_declarator
233 %type <ttype> enumlist enumerator
234 %type <ttype> struct_head union_head enum_head
235 %type <typenametype> typename
236 %type <dtrtype> absdcl absdcl1 absdcl1_ea absdcl1_noea direct_absdcl1
237 %type <parmtype> absdcl_maybe_attribute
238 %type <ttype> condition xexpr for_cond_expr for_incr_expr
239 %type <parmtype> parm firstparm
240 %type <ttype> identifiers
242 %type <arginfotype> parms parmlist parmlist_1 parmlist_2
243 %type <arginfotype> parmlist_or_identifiers parmlist_or_identifiers_1
244 %type <ttype> identifiers_or_typenames
246 %type <itype> setspecs setspecs_fp extension
248 %type <location> save_location
250 %type <otype> save_obstack_position
253 /* the Objective-C nonterminals */
255 %type <ttype> methoddecl unaryselector keywordselector selector
256 %type <code> methodtype
257 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
258 %type <ttype> keywordexpr keywordarglist keywordarg
259 %type <ttype> optparmlist optparms reservedwords objcselectorexpr
260 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
261 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
263 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING OBJC_TYPE_QUAL
265 %type <ttype> superclass objc_quals objc_qual objc_typename
266 %type <itype> objc_try_catch_stmt optellipsis
270 /* Declaration specifiers of the current declaration. */
271 static struct c_declspecs *current_declspecs;
272 static GTY(()) tree prefix_attributes;
274 /* List of all the attributes applying to the identifier currently being
275 declared; includes prefix_attributes and possibly some more attributes
276 just after a comma. */
277 static GTY(()) tree all_prefix_attributes;
279 /* Structure to save declaration specifiers. */
280 struct c_declspec_stack {
281 /* Saved value of current_declspecs. */
282 struct c_declspecs *current_declspecs;
283 /* Saved value of prefix_attributes. */
284 tree prefix_attributes;
285 /* Saved value of all_prefix_attributes. */
286 tree all_prefix_attributes;
287 /* Next level of stack. */
288 struct c_declspec_stack *next;
291 /* Stack of saved values of current_declspecs, prefix_attributes and
292 all_prefix_attributes. */
293 static struct c_declspec_stack *declspec_stack;
295 /* INDIRECT_REF with a TREE_TYPE of the type being queried for offsetof. */
296 static tree offsetof_base;
298 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
299 should be called from the productions making use of setspecs. */
300 #define PUSH_DECLSPEC_STACK \
302 struct c_declspec_stack *t = XOBNEW (&parser_obstack, \
303 struct c_declspec_stack); \
304 t->current_declspecs = current_declspecs; \
305 t->prefix_attributes = prefix_attributes; \
306 t->all_prefix_attributes = all_prefix_attributes; \
307 t->next = declspec_stack; \
308 declspec_stack = t; \
311 #define POP_DECLSPEC_STACK \
313 current_declspecs = declspec_stack->current_declspecs; \
314 prefix_attributes = declspec_stack->prefix_attributes; \
315 all_prefix_attributes = declspec_stack->all_prefix_attributes; \
316 declspec_stack = declspec_stack->next; \
319 /* For __extension__, save/restore the warning flags which are
320 controlled by __extension__. */
321 #define SAVE_EXT_FLAGS() \
323 | (warn_pointer_arith << 1) \
324 | (warn_traditional << 2) \
327 #define RESTORE_EXT_FLAGS(val) \
329 pedantic = val & 1; \
330 warn_pointer_arith = (val >> 1) & 1; \
331 warn_traditional = (val >> 2) & 1; \
332 flag_iso = (val >> 3) & 1; \
336 /* Objective-C specific parser/lexer information */
338 static int objc_pq_context = 0;
340 /* The following flag is needed to contextualize ObjC lexical analysis.
341 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
342 an identifier to an ObjC class, even if a class with that name
344 static int objc_need_raw_identifier;
345 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
349 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
352 /* Tell yyparse how to print a token's value, if yydebug is set. */
354 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
356 static void yyprint (FILE *, int, YYSTYPE);
357 static void yyerror (const char *);
358 static int yylexname (void);
359 static inline int _yylex (void);
360 static int yylex (void);
361 static void init_reswords (void);
363 /* Initialization routine for this file. */
375 pedwarn ("ISO C forbids an empty source file");
380 /* the reason for the strange actions in this rule
381 is so that notype_initdecls when reached via datadef
382 can find valid declaration specifiers in $0. */
385 save_obstack_position { $<dsptype>$ = NULL; } extdef
386 { obstack_free (&parser_obstack, $1); }
387 | extdefs save_obstack_position
388 { $<dsptype>$ = NULL; ggc_collect (); } extdef
389 { obstack_free (&parser_obstack, $2); }
397 { RESTORE_EXT_FLAGS ($1); }
403 /* Record the current position of parser_obstack before a
404 declaration to restore it afterwards. */
405 save_obstack_position:
406 { $$ = obstack_alloc (&parser_obstack, 0); }
410 setspecs notype_initdecls ';'
412 error ("ISO C forbids data definition with no type or storage class");
414 warning ("data definition has no type or storage class");
416 POP_DECLSPEC_STACK; }
417 | declspecs_nots setspecs notype_initdecls ';'
418 { POP_DECLSPEC_STACK; }
419 | declspecs_ts setspecs initdecls ';'
420 { POP_DECLSPEC_STACK; }
422 { shadow_tag (finish_declspecs ($1)); }
427 pedwarn ("ISO C does not allow extra %<;%> outside of a function"); }
431 declspecs_ts setspecs declarator
432 { if (!start_function (current_declspecs, $3,
433 all_prefix_attributes))
436 old_style_parm_decls save_location
437 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
438 store_parm_decls (); }
440 { finish_function ();
441 POP_DECLSPEC_STACK; }
442 | declspecs_ts setspecs declarator error
443 { POP_DECLSPEC_STACK; }
444 | declspecs_nots setspecs notype_declarator
445 { if (!start_function (current_declspecs, $3,
446 all_prefix_attributes))
449 old_style_parm_decls save_location
450 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
451 store_parm_decls (); }
453 { finish_function ();
454 POP_DECLSPEC_STACK; }
455 | declspecs_nots setspecs notype_declarator error
456 { POP_DECLSPEC_STACK; }
457 | setspecs notype_declarator
458 { if (!start_function (current_declspecs, $2,
459 all_prefix_attributes))
462 old_style_parm_decls save_location
463 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
464 store_parm_decls (); }
466 { finish_function ();
467 POP_DECLSPEC_STACK; }
468 | setspecs notype_declarator error
469 { POP_DECLSPEC_STACK; }
484 { $$ = NEGATE_EXPR; }
488 if (warn_traditional && !in_system_header)
489 warning ("traditional C rejects the unary plus operator");
493 { $$ = PREINCREMENT_EXPR; }
495 { $$ = PREDECREMENT_EXPR; }
497 { $$ = BIT_NOT_EXPR; }
499 { $$ = TRUTH_NOT_EXPR; }
503 | expr ',' expr_no_commas
504 { $$.value = build_compound_expr ($1.value, $3.value);
505 $$.original_code = COMPOUND_EXPR; }
516 { $$ = build_tree_list (NULL_TREE, $1.value); }
517 | nonnull_exprlist ',' expr_no_commas
518 { chainon ($1, build_tree_list (NULL_TREE, $3.value)); }
523 | '*' cast_expr %prec UNARY
524 { $$.value = build_indirect_ref ($2.value, "unary *");
525 $$.original_code = ERROR_MARK; }
526 /* __extension__ turns off -pedantic for following primary. */
527 | extension cast_expr %prec UNARY
529 RESTORE_EXT_FLAGS ($1); }
530 | unop cast_expr %prec UNARY
531 { $$.value = build_unary_op ($1, $2.value, 0);
532 overflow_warning ($$.value);
533 $$.original_code = ERROR_MARK; }
534 /* Refer to the address of a label as a pointer. */
536 { $$.value = finish_label_address_expr ($2);
537 $$.original_code = ERROR_MARK; }
538 | sizeof unary_expr %prec UNARY
541 if (TREE_CODE ($2.value) == COMPONENT_REF
542 && DECL_C_BIT_FIELD (TREE_OPERAND ($2.value, 1)))
543 error ("%<sizeof%> applied to a bit-field");
544 $$ = c_expr_sizeof_expr ($2); }
545 | sizeof '(' typename ')' %prec HYPERUNARY
548 $$ = c_expr_sizeof_type ($3); }
549 | alignof unary_expr %prec UNARY
552 $$.value = c_alignof_expr ($2.value);
553 $$.original_code = ERROR_MARK; }
554 | alignof '(' typename ')' %prec HYPERUNARY
557 $$.value = c_alignof (groktypename ($3));
558 $$.original_code = ERROR_MARK; }
559 | REALPART cast_expr %prec UNARY
560 { $$.value = build_unary_op (REALPART_EXPR, $2.value, 0);
561 $$.original_code = ERROR_MARK; }
562 | IMAGPART cast_expr %prec UNARY
563 { $$.value = build_unary_op (IMAGPART_EXPR, $2.value, 0);
564 $$.original_code = ERROR_MARK; }
568 SIZEOF { skip_evaluation++; in_sizeof++; }
572 ALIGNOF { skip_evaluation++; in_alignof++; }
576 TYPEOF { skip_evaluation++; in_typeof++; }
581 | '(' typename ')' cast_expr %prec UNARY
582 { $$.value = c_cast_expr ($2, $4.value);
583 $$.original_code = ERROR_MARK; }
588 | expr_no_commas '+' expr_no_commas
589 { $$ = parser_build_binary_op ($2, $1, $3); }
590 | expr_no_commas '-' expr_no_commas
591 { $$ = parser_build_binary_op ($2, $1, $3); }
592 | expr_no_commas '*' expr_no_commas
593 { $$ = parser_build_binary_op ($2, $1, $3); }
594 | expr_no_commas '/' expr_no_commas
595 { $$ = parser_build_binary_op ($2, $1, $3); }
596 | expr_no_commas '%' expr_no_commas
597 { $$ = parser_build_binary_op ($2, $1, $3); }
598 | expr_no_commas LSHIFT expr_no_commas
599 { $$ = parser_build_binary_op ($2, $1, $3); }
600 | expr_no_commas RSHIFT expr_no_commas
601 { $$ = parser_build_binary_op ($2, $1, $3); }
602 | expr_no_commas ARITHCOMPARE expr_no_commas
603 { $$ = parser_build_binary_op ($2, $1, $3); }
604 | expr_no_commas EQCOMPARE expr_no_commas
605 { $$ = parser_build_binary_op ($2, $1, $3); }
606 | expr_no_commas '&' expr_no_commas
607 { $$ = parser_build_binary_op ($2, $1, $3); }
608 | expr_no_commas '|' expr_no_commas
609 { $$ = parser_build_binary_op ($2, $1, $3); }
610 | expr_no_commas '^' expr_no_commas
611 { $$ = parser_build_binary_op ($2, $1, $3); }
612 | expr_no_commas ANDAND
613 { $1.value = lang_hooks.truthvalue_conversion
614 (default_conversion ($1.value));
615 skip_evaluation += $1.value == truthvalue_false_node; }
617 { skip_evaluation -= $1.value == truthvalue_false_node;
618 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
619 | expr_no_commas OROR
620 { $1.value = lang_hooks.truthvalue_conversion
621 (default_conversion ($1.value));
622 skip_evaluation += $1.value == truthvalue_true_node; }
624 { skip_evaluation -= $1.value == truthvalue_true_node;
625 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
627 { $1.value = lang_hooks.truthvalue_conversion
628 (default_conversion ($1.value));
629 skip_evaluation += $1.value == truthvalue_false_node; }
631 { skip_evaluation += (($1.value == truthvalue_true_node)
632 - ($1.value == truthvalue_false_node)); }
634 { skip_evaluation -= $1.value == truthvalue_true_node;
635 $$.value = build_conditional_expr ($1.value, $4.value,
637 $$.original_code = ERROR_MARK; }
640 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
641 /* Make sure first operand is calculated only once. */
642 $<ttype>2 = save_expr (default_conversion ($1.value));
643 $1.value = lang_hooks.truthvalue_conversion ($<ttype>2);
644 skip_evaluation += $1.value == truthvalue_true_node; }
646 { skip_evaluation -= $1.value == truthvalue_true_node;
647 $$.value = build_conditional_expr ($1.value, $<ttype>2,
649 $$.original_code = ERROR_MARK; }
650 | expr_no_commas '=' expr_no_commas
651 { $$.value = build_modify_expr ($1.value, NOP_EXPR, $3.value);
652 $$.original_code = MODIFY_EXPR;
654 | expr_no_commas ASSIGN expr_no_commas
655 { $$.value = build_modify_expr ($1.value, $2, $3.value);
656 TREE_NO_WARNING ($$.value) = 1;
657 $$.original_code = ERROR_MARK;
664 if (yychar == YYEMPTY)
666 $$.value = build_external_ref ($1, yychar == '(');
667 $$.original_code = ERROR_MARK;
670 { $$.value = $1; $$.original_code = ERROR_MARK; }
672 { $$.value = $1; $$.original_code = STRING_CST; }
674 { $$.value = fname_decl (C_RID_CODE ($1), $1);
675 $$.original_code = ERROR_MARK; }
676 | '(' typename ')' '{'
677 { start_init (NULL_TREE, NULL, 0);
678 $<ttype>$ = groktypename ($2);
679 if (C_TYPE_VARIABLE_SIZE ($<ttype>$))
681 error ("compound literal has variable size");
682 $<ttype>$ = error_mark_node;
684 really_start_incremental_init ($<ttype>$); }
685 initlist_maybe_comma '}' %prec UNARY
686 { struct c_expr init = pop_init_level (0);
687 tree constructor = init.value;
688 tree type = $<ttype>5;
690 maybe_warn_string_init (type, init);
692 if (pedantic && !flag_isoc99)
693 pedwarn ("ISO C90 forbids compound literals");
694 $$.value = build_compound_literal (type, constructor);
695 $$.original_code = ERROR_MARK;
698 { $$.value = $2.value;
699 if (TREE_CODE ($$.value) == MODIFY_EXPR)
700 TREE_NO_WARNING ($$.value) = 1;
701 $$.original_code = ERROR_MARK; }
703 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
704 | compstmt_primary_start compstmt_nostart ')'
706 pedwarn ("ISO C forbids braced-groups within expressions");
707 $$.value = c_finish_stmt_expr ($1);
708 $$.original_code = ERROR_MARK;
710 | compstmt_primary_start error ')'
711 { c_finish_stmt_expr ($1);
712 $$.value = error_mark_node;
713 $$.original_code = ERROR_MARK;
715 | primary '(' exprlist ')' %prec '.'
716 { $$.value = build_function_call ($1.value, $3);
717 $$.original_code = ERROR_MARK; }
718 | VA_ARG '(' expr_no_commas ',' typename ')'
719 { $$.value = build_va_arg ($3.value, groktypename ($5));
720 $$.original_code = ERROR_MARK; }
722 | OFFSETOF '(' typename ','
723 { tree type = groktypename ($3);
724 if (type == error_mark_node)
725 offsetof_base = error_mark_node;
727 offsetof_base = build1 (INDIRECT_REF, type, NULL);
729 offsetof_member_designator ')'
730 { $$.value = fold_offsetof ($6);
731 $$.original_code = ERROR_MARK; }
732 | OFFSETOF '(' error ')'
733 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
734 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ','
741 if (TREE_CODE (c) != INTEGER_CST)
742 error ("first argument to __builtin_choose_expr not"
744 $$ = integer_zerop (c) ? $7 : $5;
746 | CHOOSE_EXPR '(' error ')'
747 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
748 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
752 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
753 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
755 $$.value = comptypes (e1, e2)
756 ? build_int_cst (NULL_TREE, 1)
757 : build_int_cst (NULL_TREE, 0);
758 $$.original_code = ERROR_MARK;
760 | TYPES_COMPATIBLE_P '(' error ')'
761 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
762 | primary '[' expr ']' %prec '.'
763 { $$.value = build_array_ref ($1.value, $3.value);
764 $$.original_code = ERROR_MARK; }
765 | primary '.' identifier
766 { $$.value = build_component_ref ($1.value, $3);
767 $$.original_code = ERROR_MARK; }
768 | primary POINTSAT identifier
770 tree expr = build_indirect_ref ($1.value, "->");
771 $$.value = build_component_ref (expr, $3);
772 $$.original_code = ERROR_MARK;
775 { $$.value = build_unary_op (POSTINCREMENT_EXPR, $1.value, 0);
776 $$.original_code = ERROR_MARK; }
778 { $$.value = build_unary_op (POSTDECREMENT_EXPR, $1.value, 0);
779 $$.original_code = ERROR_MARK; }
782 { $$.value = objc_build_message_expr ($1);
783 $$.original_code = ERROR_MARK; }
785 { $$.value = objc_build_selector_expr ($1);
786 $$.original_code = ERROR_MARK; }
788 { $$.value = objc_build_protocol_expr ($1);
789 $$.original_code = ERROR_MARK; }
791 { $$.value = objc_build_encode_expr ($1);
792 $$.original_code = ERROR_MARK; }
794 { $$.value = objc_build_string_object ($1);
795 $$.original_code = ERROR_MARK; }
799 /* This is the second argument to __builtin_offsetof. We must have one
800 identifier, and beyond that we want to accept sub structure and sub
803 offsetof_member_designator:
805 { $$ = build_component_ref (offsetof_base, $1); }
806 | offsetof_member_designator '.' identifier
807 { $$ = build_component_ref ($1, $3); }
808 | offsetof_member_designator '[' expr ']'
809 { $$ = build_array_ref ($1, $3.value); }
812 old_style_parm_decls:
817 /* The following are analogous to lineno_decl, decls and decl
818 except that they do not allow nested functions.
819 They are used for old-style parm decls. */
821 save_location datadecl
828 | datadecls lineno_datadecl
829 | lineno_datadecl errstmt
832 /* We don't allow prefix attributes here because they cause reduce/reduce
833 conflicts: we can't know whether we're parsing a function decl with
834 attribute suffix, or function defn with attribute prefix on first old
837 declspecs_ts_nosa setspecs initdecls ';'
838 { POP_DECLSPEC_STACK; }
839 | declspecs_nots_nosa setspecs notype_initdecls ';'
840 { POP_DECLSPEC_STACK; }
841 | declspecs_ts_nosa ';'
842 { shadow_tag_warned (finish_declspecs ($1), 1);
843 pedwarn ("empty declaration"); }
844 | declspecs_nots_nosa ';'
845 { pedwarn ("empty declaration"); }
848 /* This combination which saves a lineno before a decl
849 is the normal thing to use, rather than decl itself.
850 This is to avoid shift/reduce conflicts in contexts
851 where statement labels are allowed. */
857 /* records the type and storage class specs to use for processing
858 the declarators that follow.
859 Maintains a stack of outer-level values of current_declspecs,
860 for the sake of parm declarations nested in function declarators. */
861 setspecs: /* empty */
862 { pending_xref_error ();
866 prefix_attributes = $<dsptype>0->attrs;
867 $<dsptype>0->attrs = NULL_TREE;
868 current_declspecs = $<dsptype>0;
872 prefix_attributes = NULL_TREE;
873 current_declspecs = build_null_declspecs ();
875 current_declspecs = finish_declspecs (current_declspecs);
876 all_prefix_attributes = prefix_attributes; }
879 /* Possibly attributes after a comma, which should reset all_prefix_attributes
880 to prefix_attributes with these ones chained on the front. */
883 { all_prefix_attributes = chainon ($1, prefix_attributes); }
887 declspecs_ts setspecs initdecls ';'
888 { POP_DECLSPEC_STACK; }
889 | declspecs_nots setspecs notype_initdecls ';'
890 { POP_DECLSPEC_STACK; }
891 | declspecs_ts setspecs nested_function
892 { POP_DECLSPEC_STACK; }
893 | declspecs_nots setspecs notype_nested_function
894 { POP_DECLSPEC_STACK; }
896 { shadow_tag (finish_declspecs ($1)); }
898 { RESTORE_EXT_FLAGS ($1); }
901 /* A list of declaration specifiers. These are:
903 - Storage class specifiers (scspec), which for GCC currently includes
904 function specifiers ("inline").
906 - Type specifiers (typespec_*).
908 - Type qualifiers (TYPE_QUAL).
910 - Attribute specifier lists (attributes).
912 The various cases below are classified according to:
914 (a) Whether a storage class specifier is included or not; some
915 places in the grammar disallow storage class specifiers (_sc or _nosc).
917 (b) Whether a type specifier has been seen; after a type specifier,
918 a typedef name is an identifier to redeclare (_ts or _nots).
920 (c) Whether the list starts with an attribute; in certain places,
921 the grammar requires specifiers that don't start with an attribute
924 (d) Whether the list ends with an attribute (or a specifier such that
925 any following attribute would have been parsed as part of that specifier);
926 this avoids shift-reduce conflicts in the parsing of attributes
931 (i) Distinguish between function specifiers and storage class specifiers,
932 at least for the purpose of warnings about obsolescent usage.
934 (ii) Halve the number of productions here by eliminating the _sc/_nosc
935 distinction and instead checking where required that storage class
936 specifiers aren't present. */
938 /* Declspecs which contain at least one type specifier or typedef name.
939 (Just `const' or `volatile' is not enough.)
940 A typedef'd name following these is taken as a name to be declared. */
942 declspecs_nosc_nots_nosa_noea:
944 { $$ = declspecs_add_qual (build_null_declspecs (), $1); }
945 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
946 { $$ = declspecs_add_qual ($1, $2); }
947 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
948 { $$ = declspecs_add_qual ($1, $2); }
951 declspecs_nosc_nots_nosa_ea:
952 declspecs_nosc_nots_nosa_noea attributes
953 { $$ = declspecs_add_attrs ($1, $2); }
956 declspecs_nosc_nots_sa_noea:
957 declspecs_nosc_nots_sa_noea TYPE_QUAL
958 { $$ = declspecs_add_qual ($1, $2); }
959 | declspecs_nosc_nots_sa_ea TYPE_QUAL
960 { $$ = declspecs_add_qual ($1, $2); }
963 declspecs_nosc_nots_sa_ea:
965 { $$ = declspecs_add_attrs (build_null_declspecs (), $1); }
966 | declspecs_nosc_nots_sa_noea attributes
967 { $$ = declspecs_add_attrs ($1, $2); }
970 declspecs_nosc_ts_nosa_noea:
972 { $$ = declspecs_add_type (build_null_declspecs (), $1); }
973 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
974 { $$ = declspecs_add_qual ($1, $2); }
975 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
976 { $$ = declspecs_add_qual ($1, $2); }
977 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
978 { $$ = declspecs_add_type ($1, $2); }
979 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
980 { $$ = declspecs_add_type ($1, $2); }
981 | declspecs_nosc_nots_nosa_noea typespec_nonattr
982 { $$ = declspecs_add_type ($1, $2); }
983 | declspecs_nosc_nots_nosa_ea typespec_nonattr
984 { $$ = declspecs_add_type ($1, $2); }
987 declspecs_nosc_ts_nosa_ea:
989 { $$ = declspecs_add_type (build_null_declspecs (), $1); }
990 | declspecs_nosc_ts_nosa_noea attributes
991 { $$ = declspecs_add_attrs ($1, $2); }
992 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
993 { $$ = declspecs_add_type ($1, $2); }
994 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
995 { $$ = declspecs_add_type ($1, $2); }
996 | declspecs_nosc_nots_nosa_noea typespec_attr
997 { $$ = declspecs_add_type ($1, $2); }
998 | declspecs_nosc_nots_nosa_ea typespec_attr
999 { $$ = declspecs_add_type ($1, $2); }
1002 declspecs_nosc_ts_sa_noea:
1003 declspecs_nosc_ts_sa_noea TYPE_QUAL
1004 { $$ = declspecs_add_qual ($1, $2); }
1005 | declspecs_nosc_ts_sa_ea TYPE_QUAL
1006 { $$ = declspecs_add_qual ($1, $2); }
1007 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
1008 { $$ = declspecs_add_type ($1, $2); }
1009 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
1010 { $$ = declspecs_add_type ($1, $2); }
1011 | declspecs_nosc_nots_sa_noea typespec_nonattr
1012 { $$ = declspecs_add_type ($1, $2); }
1013 | declspecs_nosc_nots_sa_ea typespec_nonattr
1014 { $$ = declspecs_add_type ($1, $2); }
1017 declspecs_nosc_ts_sa_ea:
1018 declspecs_nosc_ts_sa_noea attributes
1019 { $$ = declspecs_add_attrs ($1, $2); }
1020 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1021 { $$ = declspecs_add_type ($1, $2); }
1022 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1023 { $$ = declspecs_add_type ($1, $2); }
1024 | declspecs_nosc_nots_sa_noea typespec_attr
1025 { $$ = declspecs_add_type ($1, $2); }
1026 | declspecs_nosc_nots_sa_ea typespec_attr
1027 { $$ = declspecs_add_type ($1, $2); }
1030 declspecs_sc_nots_nosa_noea:
1032 { $$ = declspecs_add_scspec (build_null_declspecs (), $1); }
1033 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1034 { $$ = declspecs_add_qual ($1, $2); }
1035 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1036 { $$ = declspecs_add_qual ($1, $2); }
1037 | declspecs_nosc_nots_nosa_noea scspec
1038 { $$ = declspecs_add_scspec ($1, $2); }
1039 | declspecs_nosc_nots_nosa_ea scspec
1040 { $$ = declspecs_add_scspec ($1, $2); }
1041 | declspecs_sc_nots_nosa_noea scspec
1042 { $$ = declspecs_add_scspec ($1, $2); }
1043 | declspecs_sc_nots_nosa_ea scspec
1044 { $$ = declspecs_add_scspec ($1, $2); }
1047 declspecs_sc_nots_nosa_ea:
1048 declspecs_sc_nots_nosa_noea attributes
1049 { $$ = declspecs_add_attrs ($1, $2); }
1052 declspecs_sc_nots_sa_noea:
1053 declspecs_sc_nots_sa_noea TYPE_QUAL
1054 { $$ = declspecs_add_qual ($1, $2); }
1055 | declspecs_sc_nots_sa_ea TYPE_QUAL
1056 { $$ = declspecs_add_qual ($1, $2); }
1057 | declspecs_nosc_nots_sa_noea scspec
1058 { $$ = declspecs_add_scspec ($1, $2); }
1059 | declspecs_nosc_nots_sa_ea scspec
1060 { $$ = declspecs_add_scspec ($1, $2); }
1061 | declspecs_sc_nots_sa_noea scspec
1062 { $$ = declspecs_add_scspec ($1, $2); }
1063 | declspecs_sc_nots_sa_ea scspec
1064 { $$ = declspecs_add_scspec ($1, $2); }
1067 declspecs_sc_nots_sa_ea:
1068 declspecs_sc_nots_sa_noea attributes
1069 { $$ = declspecs_add_attrs ($1, $2); }
1072 declspecs_sc_ts_nosa_noea:
1073 declspecs_sc_ts_nosa_noea TYPE_QUAL
1074 { $$ = declspecs_add_qual ($1, $2); }
1075 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1076 { $$ = declspecs_add_qual ($1, $2); }
1077 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1078 { $$ = declspecs_add_type ($1, $2); }
1079 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1080 { $$ = declspecs_add_type ($1, $2); }
1081 | declspecs_sc_nots_nosa_noea typespec_nonattr
1082 { $$ = declspecs_add_type ($1, $2); }
1083 | declspecs_sc_nots_nosa_ea typespec_nonattr
1084 { $$ = declspecs_add_type ($1, $2); }
1085 | declspecs_nosc_ts_nosa_noea scspec
1086 { $$ = declspecs_add_scspec ($1, $2); }
1087 | declspecs_nosc_ts_nosa_ea scspec
1088 { $$ = declspecs_add_scspec ($1, $2); }
1089 | declspecs_sc_ts_nosa_noea scspec
1090 { $$ = declspecs_add_scspec ($1, $2); }
1091 | declspecs_sc_ts_nosa_ea scspec
1092 { $$ = declspecs_add_scspec ($1, $2); }
1095 declspecs_sc_ts_nosa_ea:
1096 declspecs_sc_ts_nosa_noea attributes
1097 { $$ = declspecs_add_attrs ($1, $2); }
1098 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1099 { $$ = declspecs_add_type ($1, $2); }
1100 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1101 { $$ = declspecs_add_type ($1, $2); }
1102 | declspecs_sc_nots_nosa_noea typespec_attr
1103 { $$ = declspecs_add_type ($1, $2); }
1104 | declspecs_sc_nots_nosa_ea typespec_attr
1105 { $$ = declspecs_add_type ($1, $2); }
1108 declspecs_sc_ts_sa_noea:
1109 declspecs_sc_ts_sa_noea TYPE_QUAL
1110 { $$ = declspecs_add_qual ($1, $2); }
1111 | declspecs_sc_ts_sa_ea TYPE_QUAL
1112 { $$ = declspecs_add_qual ($1, $2); }
1113 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1114 { $$ = declspecs_add_type ($1, $2); }
1115 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1116 { $$ = declspecs_add_type ($1, $2); }
1117 | declspecs_sc_nots_sa_noea typespec_nonattr
1118 { $$ = declspecs_add_type ($1, $2); }
1119 | declspecs_sc_nots_sa_ea typespec_nonattr
1120 { $$ = declspecs_add_type ($1, $2); }
1121 | declspecs_nosc_ts_sa_noea scspec
1122 { $$ = declspecs_add_scspec ($1, $2); }
1123 | declspecs_nosc_ts_sa_ea scspec
1124 { $$ = declspecs_add_scspec ($1, $2); }
1125 | declspecs_sc_ts_sa_noea scspec
1126 { $$ = declspecs_add_scspec ($1, $2); }
1127 | declspecs_sc_ts_sa_ea scspec
1128 { $$ = declspecs_add_scspec ($1, $2); }
1131 declspecs_sc_ts_sa_ea:
1132 declspecs_sc_ts_sa_noea attributes
1133 { $$ = declspecs_add_attrs ($1, $2); }
1134 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1135 { $$ = declspecs_add_type ($1, $2); }
1136 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1137 { $$ = declspecs_add_type ($1, $2); }
1138 | declspecs_sc_nots_sa_noea typespec_attr
1139 { $$ = declspecs_add_type ($1, $2); }
1140 | declspecs_sc_nots_sa_ea typespec_attr
1141 { $$ = declspecs_add_type ($1, $2); }
1144 /* Particular useful classes of declspecs. */
1146 declspecs_nosc_ts_nosa_noea
1147 | declspecs_nosc_ts_nosa_ea
1148 | declspecs_nosc_ts_sa_noea
1149 | declspecs_nosc_ts_sa_ea
1150 | declspecs_sc_ts_nosa_noea
1151 | declspecs_sc_ts_nosa_ea
1152 | declspecs_sc_ts_sa_noea
1153 | declspecs_sc_ts_sa_ea
1157 declspecs_nosc_nots_nosa_noea
1158 | declspecs_nosc_nots_nosa_ea
1159 | declspecs_nosc_nots_sa_noea
1160 | declspecs_nosc_nots_sa_ea
1161 | declspecs_sc_nots_nosa_noea
1162 | declspecs_sc_nots_nosa_ea
1163 | declspecs_sc_nots_sa_noea
1164 | declspecs_sc_nots_sa_ea
1168 declspecs_nosc_ts_nosa_noea
1169 | declspecs_nosc_ts_nosa_ea
1170 | declspecs_sc_ts_nosa_noea
1171 | declspecs_sc_ts_nosa_ea
1174 declspecs_nots_nosa:
1175 declspecs_nosc_nots_nosa_noea
1176 | declspecs_nosc_nots_nosa_ea
1177 | declspecs_sc_nots_nosa_noea
1178 | declspecs_sc_nots_nosa_ea
1182 declspecs_nosc_ts_nosa_noea
1183 | declspecs_nosc_ts_nosa_ea
1184 | declspecs_nosc_ts_sa_noea
1185 | declspecs_nosc_ts_sa_ea
1188 declspecs_nosc_nots:
1189 declspecs_nosc_nots_nosa_noea
1190 | declspecs_nosc_nots_nosa_ea
1191 | declspecs_nosc_nots_sa_noea
1192 | declspecs_nosc_nots_sa_ea
1196 declspecs_nosc_ts_nosa_noea
1197 | declspecs_nosc_ts_nosa_ea
1198 | declspecs_nosc_ts_sa_noea
1199 | declspecs_nosc_ts_sa_ea
1200 | declspecs_nosc_nots_nosa_noea
1201 | declspecs_nosc_nots_nosa_ea
1202 | declspecs_nosc_nots_sa_noea
1203 | declspecs_nosc_nots_sa_ea
1207 declspecs_nosc_nots_nosa_noea
1208 | declspecs_nosc_nots_nosa_ea
1209 | declspecs_nosc_nots_sa_noea
1210 | declspecs_nosc_nots_sa_ea
1211 | declspecs_nosc_ts_nosa_noea
1212 | declspecs_nosc_ts_nosa_ea
1213 | declspecs_nosc_ts_sa_noea
1214 | declspecs_nosc_ts_sa_ea
1215 | declspecs_sc_nots_nosa_noea
1216 | declspecs_sc_nots_nosa_ea
1217 | declspecs_sc_nots_sa_noea
1218 | declspecs_sc_nots_sa_ea
1219 | declspecs_sc_ts_nosa_noea
1220 | declspecs_sc_ts_nosa_ea
1221 | declspecs_sc_ts_sa_noea
1222 | declspecs_sc_ts_sa_ea
1225 /* A (possibly empty) sequence of type qualifiers and attributes. */
1226 maybe_type_quals_attrs:
1229 | declspecs_nosc_nots
1233 /* A type specifier (but not a type qualifier).
1234 Once we have seen one of these in a declaration,
1235 if a typedef name appears then it is being redeclared.
1237 The _reserved versions start with a reserved word and may appear anywhere
1238 in the declaration specifiers; the _nonreserved versions may only
1239 appear before any other type specifiers, and after that are (if names)
1242 FIXME: should the _nonreserved version be restricted to names being
1243 redeclared only? The other entries there relate only the GNU extensions
1244 and Objective C, and are historically parsed thus, and don't make sense
1245 after other type specifiers, but it might be cleaner to count them as
1248 _attr means: specifiers that either end with attributes,
1249 or are such that any following attributes would
1250 be parsed as part of the specifier.
1252 _nonattr: other specifiers not ending with attributes. */
1255 typespec_reserved_nonattr
1256 | typespec_nonreserved_nonattr
1260 typespec_reserved_attr
1263 typespec_reserved_nonattr:
1265 { OBJC_NEED_RAW_IDENTIFIER (1);
1266 $$.kind = ctsk_resword;
1271 typespec_reserved_attr:
1275 typespec_nonreserved_nonattr:
1277 { /* For a typedef name, record the meaning, not the name.
1278 In case of `foo foo, bar;'. */
1279 $$.kind = ctsk_typedef;
1280 $$.spec = lookup_name ($1); }
1282 | CLASSNAME protocolrefs
1283 { $$.kind = ctsk_objc;
1284 $$.spec = objc_get_protocol_qualified_type ($1, $2); }
1285 | OBJECTNAME protocolrefs
1286 { $$.kind = ctsk_objc;
1287 $$.spec = objc_get_protocol_qualified_type ($1, $2); }
1289 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1290 - nisse@lysator.liu.se */
1291 | non_empty_protocolrefs
1292 { $$.kind = ctsk_objc;
1293 $$.spec = objc_get_protocol_qualified_type (NULL_TREE, $1); }
1295 | typeof '(' expr ')'
1296 { skip_evaluation--;
1298 if (TREE_CODE ($3.value) == COMPONENT_REF
1299 && DECL_C_BIT_FIELD (TREE_OPERAND ($3.value, 1)))
1300 error ("%<typeof%> applied to a bit-field");
1301 $$.kind = ctsk_typeof;
1302 $$.spec = TREE_TYPE ($3.value);
1303 pop_maybe_used (variably_modified_type_p ($$.spec,
1305 | typeof '(' typename ')'
1306 { skip_evaluation--;
1308 $$.kind = ctsk_typeof;
1309 $$.spec = groktypename ($3);
1310 pop_maybe_used (variably_modified_type_p ($$.spec,
1314 /* typespec_nonreserved_attr does not exist. */
1318 | initdecls ',' maybe_resetattrs initdcl
1323 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1327 declarator maybeasm maybe_attribute '='
1328 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1329 chainon ($3, all_prefix_attributes));
1330 start_init ($<ttype>$, $2, global_bindings_p ()); }
1332 /* Note how the declaration of the variable is in effect while its init is parsed! */
1334 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1335 finish_decl ($<ttype>5, $6.value, $2); }
1336 | declarator maybeasm maybe_attribute
1337 { tree d = start_decl ($1, current_declspecs, false,
1338 chainon ($3, all_prefix_attributes));
1339 finish_decl (d, NULL_TREE, $2);
1344 notype_declarator maybeasm maybe_attribute '='
1345 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1346 chainon ($3, all_prefix_attributes));
1347 start_init ($<ttype>$, $2, global_bindings_p ()); }
1349 /* Note how the declaration of the variable is in effect while its init is parsed! */
1351 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1352 finish_decl ($<ttype>5, $6.value, $2); }
1353 | notype_declarator maybeasm maybe_attribute
1354 { tree d = start_decl ($1, current_declspecs, false,
1355 chainon ($3, all_prefix_attributes));
1356 finish_decl (d, NULL_TREE, $2); }
1358 /* the * rules are dummies to accept the Apollo extended syntax
1359 so that the header files compile. */
1370 | attributes attribute
1371 { $$ = chainon ($1, $2); }
1375 ATTRIBUTE stop_string_translation
1376 '(' '(' attribute_list ')' ')' start_string_translation
1378 | ATTRIBUTE error start_string_translation
1385 | attribute_list ',' attrib
1386 { $$ = chainon ($1, $3); }
1393 { $$ = build_tree_list ($1, NULL_TREE); }
1394 | any_word '(' IDENTIFIER ')'
1395 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1396 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1397 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1398 | any_word '(' exprlist ')'
1399 { $$ = build_tree_list ($1, $3); }
1402 /* This still leaves out most reserved keywords,
1403 shouldn't we include them? */
1417 /* Initializers. `init' is the entry point. */
1423 { really_start_incremental_init (NULL_TREE); }
1424 initlist_maybe_comma '}'
1425 { $$ = pop_init_level (0); }
1427 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
1430 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1431 initlist_maybe_comma:
1434 pedwarn ("ISO C forbids empty initializer braces"); }
1435 | initlist1 maybecomma
1440 | initlist1 ',' initelt
1443 /* `initelt' is a single element of an initializer.
1444 It may use braces. */
1446 designator_list '=' initval
1447 { if (pedantic && !flag_isoc99)
1448 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1449 | designator initval
1451 pedwarn ("obsolete use of designated initializer without %<=%>"); }
1453 { set_init_label ($1);
1455 pedwarn ("obsolete use of designated initializer with %<:%>"); }
1463 { push_init_level (0); }
1464 initlist_maybe_comma '}'
1465 { process_init_element (pop_init_level (0)); }
1467 { process_init_element ($1); }
1473 | designator_list designator
1478 { set_init_label ($2); }
1479 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1480 { set_init_index ($2.value, $4.value);
1482 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1483 | '[' expr_no_commas ']'
1484 { set_init_index ($2.value, NULL_TREE); }
1490 pedwarn ("ISO C forbids nested functions");
1492 push_function_context ();
1493 if (!start_function (current_declspecs, $1,
1494 all_prefix_attributes))
1496 pop_function_context ();
1500 old_style_parm_decls save_location
1501 { tree decl = current_function_decl;
1502 DECL_SOURCE_LOCATION (decl) = $4;
1503 store_parm_decls (); }
1504 /* This used to use compstmt_or_error. That caused a bug with
1505 input `f(g) int g {}', where the use of YYERROR1 above caused
1506 an error which then was handled by compstmt_or_error. There
1507 followed a repeated execution of that same rule, which called
1508 YYERROR1 again, and so on. */
1510 { tree decl = current_function_decl;
1513 pop_function_context ();
1514 add_stmt (build_stmt (DECL_EXPR, decl)); }
1517 notype_nested_function:
1520 pedwarn ("ISO C forbids nested functions");
1522 push_function_context ();
1523 if (!start_function (current_declspecs, $1,
1524 all_prefix_attributes))
1526 pop_function_context ();
1530 old_style_parm_decls save_location
1531 { tree decl = current_function_decl;
1532 DECL_SOURCE_LOCATION (decl) = $4;
1533 store_parm_decls (); }
1534 /* This used to use compstmt_or_error. That caused a bug with
1535 input `f(g) int g {}', where the use of YYERROR1 above caused
1536 an error which then was handled by compstmt_or_error. There
1537 followed a repeated execution of that same rule, which called
1538 YYERROR1 again, and so on. */
1540 { tree decl = current_function_decl;
1543 pop_function_context ();
1544 add_stmt (build_stmt (DECL_EXPR, decl)); }
1547 /* Any kind of declarator (thus, all declarators allowed
1548 after an explicit typespec). */
1551 after_type_declarator
1555 /* A declarator that is allowed only after an explicit typespec. */
1557 after_type_declarator:
1558 '(' maybe_attribute after_type_declarator ')'
1559 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1560 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1561 { $$ = build_function_declarator ($3, $1); }
1562 | after_type_declarator array_declarator %prec '.'
1563 { $$ = set_array_declarator_inner ($2, $1, false); }
1564 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1565 { $$ = make_pointer_declarator ($2, $3); }
1567 { $$ = build_id_declarator ($1); }
1570 { $$ = build_id_declarator ($1); }
1574 /* Kinds of declarator that can appear in a parameter list
1575 in addition to notype_declarator. This is like after_type_declarator
1576 but does not allow a typedef name in parentheses as an identifier
1577 (because it would conflict with a function with that typedef as arg). */
1579 parm_declarator_starttypename
1580 | parm_declarator_nostarttypename
1583 parm_declarator_starttypename:
1584 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1585 { $$ = build_function_declarator ($3, $1); }
1586 | parm_declarator_starttypename array_declarator %prec '.'
1587 { $$ = set_array_declarator_inner ($2, $1, false); }
1589 { $$ = build_id_declarator ($1); }
1592 { $$ = build_id_declarator ($1); }
1596 parm_declarator_nostarttypename:
1597 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1598 { $$ = build_function_declarator ($3, $1); }
1599 | parm_declarator_nostarttypename array_declarator %prec '.'
1600 { $$ = set_array_declarator_inner ($2, $1, false); }
1601 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1602 { $$ = make_pointer_declarator ($2, $3); }
1603 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1604 { $$ = make_pointer_declarator ($2, $3); }
1605 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1606 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1609 /* A declarator allowed whether or not there has been
1610 an explicit typespec. These cannot redeclare a typedef-name. */
1613 notype_declarator '(' parmlist_or_identifiers %prec '.'
1614 { $$ = build_function_declarator ($3, $1); }
1615 | '(' maybe_attribute notype_declarator ')'
1616 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1617 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1618 { $$ = make_pointer_declarator ($2, $3); }
1619 | notype_declarator array_declarator %prec '.'
1620 { $$ = set_array_declarator_inner ($2, $1, false); }
1622 { $$ = build_id_declarator ($1); }
1646 /* structsp_attr: struct/union/enum specifiers that either
1647 end with attributes, or are such that any following attributes would
1648 be parsed as part of the struct/union/enum specifier.
1650 structsp_nonattr: other struct/union/enum specifiers. */
1653 struct_head identifier '{'
1654 { $<ttype>$ = start_struct (RECORD_TYPE, $2);
1655 /* Start scope of tag before parsing components. */
1657 component_decl_list '}' maybe_attribute
1658 { $$.spec = finish_struct ($<ttype>4, nreverse ($5),
1660 $$.kind = ctsk_tagdef; }
1661 | struct_head '{' component_decl_list '}' maybe_attribute
1662 { $$.spec = finish_struct (start_struct (RECORD_TYPE,
1664 nreverse ($3), chainon ($1, $5));
1665 $$.kind = ctsk_tagdef;
1667 | union_head identifier '{'
1668 { $<ttype>$ = start_struct (UNION_TYPE, $2); }
1669 component_decl_list '}' maybe_attribute
1670 { $$.spec = finish_struct ($<ttype>4, nreverse ($5),
1672 $$.kind = ctsk_tagdef; }
1673 | union_head '{' component_decl_list '}' maybe_attribute
1674 { $$.spec = finish_struct (start_struct (UNION_TYPE,
1676 nreverse ($3), chainon ($1, $5));
1677 $$.kind = ctsk_tagdef;
1679 | enum_head identifier '{'
1680 { $<ttype>$ = start_enum ($2); }
1681 enumlist maybecomma_warn '}' maybe_attribute
1682 { $$.spec = finish_enum ($<ttype>4, nreverse ($5),
1684 $$.kind = ctsk_tagdef; }
1686 { $<ttype>$ = start_enum (NULL_TREE); }
1687 enumlist maybecomma_warn '}' maybe_attribute
1688 { $$.spec = finish_enum ($<ttype>3, nreverse ($4),
1690 $$.kind = ctsk_tagdef; }
1694 struct_head identifier
1695 { $$ = parser_xref_tag (RECORD_TYPE, $2); }
1696 | union_head identifier
1697 { $$ = parser_xref_tag (UNION_TYPE, $2); }
1698 | enum_head identifier
1699 { $$ = parser_xref_tag (ENUMERAL_TYPE, $2);
1700 /* In ISO C, enumerated types can be referred to
1701 only if already defined. */
1702 if (pedantic && !COMPLETE_TYPE_P ($$.spec))
1703 pedwarn ("ISO C forbids forward references to %<enum%> types"); }
1714 { if (pedantic && !flag_isoc99)
1715 pedwarn ("comma at end of enumerator list"); }
1718 /* We chain the components in reverse order. They are put in forward
1719 order in structsp_attr.
1721 Note that component_declarator returns single decls, so components
1722 and components_notype can use TREE_CHAIN directly, wheras components
1723 and components_notype return lists (of comma separated decls), so
1724 component_decl_list and component_decl_list2 must use chainon.
1726 The theory behind all this is that there will be more semicolon
1727 separated fields than comma separated fields, and so we'll be
1728 minimizing the number of node traversals required by chainon. */
1730 component_decl_list:
1731 component_decl_list2
1733 | component_decl_list2 component_decl
1734 { $$ = chainon ($2, $1);
1735 pedwarn ("no semicolon at end of struct or union"); }
1738 component_decl_list2: /* empty */
1740 | component_decl_list2 component_decl ';'
1741 { $$ = chainon ($2, $1); }
1742 | component_decl_list2 ';'
1744 pedwarn ("extra semicolon in struct or union specified"); }
1746 /* foo(sizeof(struct{ @defs(ClassName)})); */
1747 | AT_DEFS '(' CLASSNAME ')'
1748 { $$ = nreverse (objc_get_class_ivars ($3)); }
1753 declspecs_nosc_ts setspecs components
1755 POP_DECLSPEC_STACK; }
1756 | declspecs_nosc_ts setspecs
1758 /* Support for unnamed structs or unions as members of
1759 structs or unions (which is [a] useful and [b] supports
1761 $$ = grokfield (build_id_declarator (NULL_TREE),
1762 current_declspecs, NULL_TREE);
1763 POP_DECLSPEC_STACK; }
1764 | declspecs_nosc_nots setspecs components_notype
1766 POP_DECLSPEC_STACK; }
1767 | declspecs_nosc_nots
1769 pedwarn ("ISO C forbids member declarations with no members");
1770 shadow_tag_warned (finish_declspecs ($1), pedantic);
1774 | extension component_decl
1776 RESTORE_EXT_FLAGS ($1); }
1780 component_declarator
1781 | components ',' maybe_resetattrs component_declarator
1782 { TREE_CHAIN ($4) = $1; $$ = $4; }
1786 component_notype_declarator
1787 | components_notype ',' maybe_resetattrs component_notype_declarator
1788 { TREE_CHAIN ($4) = $1; $$ = $4; }
1791 component_declarator:
1792 declarator maybe_attribute
1793 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1794 decl_attributes (&$$,
1795 chainon ($2, all_prefix_attributes), 0); }
1796 | declarator ':' expr_no_commas maybe_attribute
1797 { $$ = grokfield ($1, current_declspecs, $3.value);
1798 decl_attributes (&$$,
1799 chainon ($4, all_prefix_attributes), 0); }
1800 | ':' expr_no_commas maybe_attribute
1801 { $$ = grokfield (build_id_declarator (NULL_TREE),
1802 current_declspecs, $2.value);
1803 decl_attributes (&$$,
1804 chainon ($3, all_prefix_attributes), 0); }
1807 component_notype_declarator:
1808 notype_declarator maybe_attribute
1809 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1810 decl_attributes (&$$,
1811 chainon ($2, all_prefix_attributes), 0); }
1812 | notype_declarator ':' expr_no_commas maybe_attribute
1813 { $$ = grokfield ($1, current_declspecs, $3.value);
1814 decl_attributes (&$$,
1815 chainon ($4, all_prefix_attributes), 0); }
1816 | ':' expr_no_commas maybe_attribute
1817 { $$ = grokfield (build_id_declarator (NULL_TREE),
1818 current_declspecs, $2.value);
1819 decl_attributes (&$$,
1820 chainon ($3, all_prefix_attributes), 0); }
1823 /* We chain the enumerators in reverse order.
1824 They are put in forward order in structsp_attr. */
1828 | enumlist ',' enumerator
1829 { if ($1 == error_mark_node)
1832 TREE_CHAIN ($3) = $1, $$ = $3; }
1834 { $$ = error_mark_node; }
1840 { $$ = build_enumerator ($1, NULL_TREE); }
1841 | identifier '=' expr_no_commas
1842 { $$ = build_enumerator ($1, $3.value); }
1847 { pending_xref_error ();
1848 $<dsptype>$ = finish_declspecs ($1); }
1850 { $$ = XOBNEW (&parser_obstack, struct c_type_name);
1851 $$->specs = $<dsptype>2;
1852 $$->declarator = $3; }
1855 absdcl: /* an absolute declarator */
1857 { $$ = build_id_declarator (NULL_TREE); }
1861 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1863 { $$ = build_c_parm (current_declspecs, all_prefix_attributes,
1864 build_id_declarator (NULL_TREE)); }
1866 { $$ = build_c_parm (current_declspecs, all_prefix_attributes,
1868 | absdcl1_noea attributes
1869 { $$ = build_c_parm (current_declspecs,
1870 chainon ($2, all_prefix_attributes),
1874 absdcl1: /* a nonempty absolute declarator */
1881 | '*' maybe_type_quals_attrs absdcl1_noea
1882 { $$ = make_pointer_declarator ($2, $3); }
1886 '*' maybe_type_quals_attrs
1887 { $$ = make_pointer_declarator
1888 ($2, build_id_declarator (NULL_TREE)); }
1889 | '*' maybe_type_quals_attrs absdcl1_ea
1890 { $$ = make_pointer_declarator ($2, $3); }
1894 '(' maybe_attribute absdcl1 ')'
1895 { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; }
1896 | direct_absdcl1 '(' parmlist
1897 { $$ = build_function_declarator ($3, $1); }
1898 | direct_absdcl1 array_declarator
1899 { $$ = set_array_declarator_inner ($2, $1, true); }
1901 { $$ = build_function_declarator
1902 ($2, build_id_declarator (NULL_TREE)); }
1904 { $$ = set_array_declarator_inner
1905 ($1, build_id_declarator (NULL_TREE), true); }
1908 /* The [...] part of a declarator for an array type. */
1911 '[' maybe_type_quals_attrs expr_no_commas ']'
1912 { $$ = build_array_declarator ($3.value, $2, false, false); }
1913 | '[' maybe_type_quals_attrs ']'
1914 { $$ = build_array_declarator (NULL_TREE, $2, false, false); }
1915 | '[' maybe_type_quals_attrs '*' ']'
1916 { $$ = build_array_declarator (NULL_TREE, $2, false, true); }
1917 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1918 { $$ = build_array_declarator ($4.value, $3, true, false); }
1919 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1920 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1921 { $$ = build_array_declarator ($4.value, $2, true, false); }
1924 /* A nonempty series of declarations and statements (possibly followed by
1925 some labels) that can form the body of a compound statement.
1926 NOTE: we don't allow labels on declarations; this might seem like a
1927 natural extension, but there would be a conflict between attributes
1928 on the label and prefix attributes on the declaration. */
1931 lineno_stmt_decl_or_labels_ending_stmt
1932 | lineno_stmt_decl_or_labels_ending_decl
1933 | lineno_stmt_decl_or_labels_ending_label
1935 error ("label at end of compound statement");
1937 | lineno_stmt_decl_or_labels_ending_error
1940 lineno_stmt_decl_or_labels_ending_stmt:
1942 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1943 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1944 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1945 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
1948 lineno_stmt_decl_or_labels_ending_decl:
1950 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
1952 if ((pedantic && !flag_isoc99)
1953 || warn_declaration_after_statement)
1954 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
1956 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
1957 | lineno_stmt_decl_or_labels_ending_error lineno_decl
1960 lineno_stmt_decl_or_labels_ending_label:
1962 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
1963 | lineno_stmt_decl_or_labels_ending_decl lineno_label
1964 | lineno_stmt_decl_or_labels_ending_label lineno_label
1965 | lineno_stmt_decl_or_labels_ending_error lineno_label
1968 lineno_stmt_decl_or_labels_ending_error:
1970 | lineno_stmt_decl_or_labels errstmt
1973 lineno_stmt_decl_or_labels:
1974 lineno_stmt_decl_or_labels_ending_stmt
1975 | lineno_stmt_decl_or_labels_ending_decl
1976 | lineno_stmt_decl_or_labels_ending_label
1977 | lineno_stmt_decl_or_labels_ending_error
1983 /* Start and end blocks created for the new scopes of C99. */
1984 c99_block_start: /* empty */
1985 { $$ = c_begin_compound_stmt (flag_isoc99); }
1988 /* Read zero or more forward-declarations for labels
1989 that nested functions can jump to. */
1994 pedwarn ("ISO C forbids label declarations"); }
1999 | label_decls label_decl
2003 LABEL identifiers_or_typenames ';'
2005 for (link = $2; link; link = TREE_CHAIN (link))
2007 tree label = declare_label (TREE_VALUE (link));
2008 C_DECLARED_LABEL_FLAG (label) = 1;
2009 add_stmt (build_stmt (DECL_EXPR, label));
2014 /* This is the body of a function definition.
2015 It causes syntax errors to ignore to the next openbrace. */
2022 compstmt_start: '{' { $$ = c_begin_compound_stmt (true); }
2025 compstmt_nostart: '}'
2026 | maybe_label_decls compstmt_contents_nonempty '}'
2029 compstmt_contents_nonempty:
2034 compstmt_primary_start:
2036 { if (current_function_decl == 0)
2038 error ("braced-group within expression allowed "
2039 "only inside a function");
2042 $$ = c_begin_stmt_expr ();
2046 compstmt: compstmt_start compstmt_nostart
2047 { $$ = c_end_compound_stmt ($1, true); }
2050 /* The forced readahead in here is because we might be at the end of a
2051 line, and the line and file won't be bumped until yylex absorbs the
2052 first token on the next line. */
2055 { if (yychar == YYEMPTY)
2057 $$ = input_location; }
2062 | lineno_labels lineno_label
2065 /* A labeled statement. In C99 it also generates an implicit block. */
2066 c99_block_lineno_labeled_stmt:
2067 c99_block_start lineno_labels lineno_stmt
2068 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2074 /* Two cases cannot and do not have line numbers associated:
2075 If stmt is degenerate, such as "2;", then stmt is an
2076 INTEGER_CST, which cannot hold line numbers. But that's
2077 ok because the statement will either be changed to a
2078 MODIFY_EXPR during gimplification of the statement expr,
2079 or discarded. If stmt was compound, but without new
2080 variables, we will have skipped the creation of a BIND
2081 and will have a bare STATEMENT_LIST. But that's ok
2082 because (recursively) all of the component statments
2083 should already have line numbers assigned. */
2084 if ($2 && EXPR_P ($2))
2085 SET_EXPR_LOCATION ($2, $1);
2091 { if ($2) SET_EXPR_LOCATION ($2, $1); }
2094 condition: save_location expr
2095 { $$ = lang_hooks.truthvalue_conversion ($2.value);
2097 SET_EXPR_LOCATION ($$, $1); }
2100 /* Implement -Wparenthesis by special casing IF statement directly nested
2101 within IF statement. This requires some amount of duplication of the
2102 productions under c99_block_lineno_labeled_stmt in order to work out.
2103 But it's still likely more maintainable than lots of state outside the
2107 c99_block_start lineno_labels if_statement
2108 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2112 c99_block_start lineno_labels ';'
2113 { if (extra_warnings)
2114 add_stmt (build (NOP_EXPR, NULL_TREE, NULL_TREE));
2115 $$ = c_end_compound_stmt ($1, flag_isoc99); }
2116 | c99_block_lineno_labeled_stmt
2120 IF c99_block_start save_location '(' condition ')'
2121 if_statement_1 ELSE if_statement_2
2122 { c_finish_if_stmt ($3, $5, $7, $9, true);
2123 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2124 | IF c99_block_start save_location '(' condition ')'
2125 if_statement_2 ELSE if_statement_2
2126 { c_finish_if_stmt ($3, $5, $7, $9, false);
2127 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2128 | IF c99_block_start save_location '(' condition ')'
2129 if_statement_1 %prec IF
2130 { c_finish_if_stmt ($3, $5, $7, NULL, true);
2131 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2132 | IF c99_block_start save_location '(' condition ')'
2133 if_statement_2 %prec IF
2134 { c_finish_if_stmt ($3, $5, $7, NULL, false);
2135 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2138 start_break: /* empty */
2139 { $$ = c_break_label; c_break_label = NULL; }
2142 start_continue: /* empty */
2143 { $$ = c_cont_label; c_cont_label = NULL; }
2147 WHILE c99_block_start save_location '(' condition ')'
2148 start_break start_continue c99_block_lineno_labeled_stmt
2149 { c_finish_loop ($3, $5, NULL, $9, c_break_label,
2150 c_cont_label, true);
2151 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2152 c_break_label = $7; c_cont_label = $8; }
2156 DO c99_block_start save_location start_break start_continue
2157 c99_block_lineno_labeled_stmt WHILE
2158 { $<ttype>$ = c_break_label; c_break_label = $4; }
2159 { $<ttype>$ = c_cont_label; c_cont_label = $5; }
2160 '(' condition ')' ';'
2161 { c_finish_loop ($3, $11, NULL, $6, $<ttype>8,
2163 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2175 { c_finish_expr_stmt ($1); }
2177 { check_for_loop_decls (); }
2180 for_cond_expr: save_location xexpr
2183 $$ = lang_hooks.truthvalue_conversion ($2);
2185 SET_EXPR_LOCATION ($$, $1);
2192 for_incr_expr: xexpr
2193 { $$ = c_process_expr_stmt ($1); }
2197 FOR c99_block_start '(' for_init_stmt
2198 save_location for_cond_expr ';' for_incr_expr ')'
2199 start_break start_continue c99_block_lineno_labeled_stmt
2200 { c_finish_loop ($5, $6, $8, $12, c_break_label,
2201 c_cont_label, true);
2202 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2203 c_break_label = $10; c_cont_label = $11; }
2207 SWITCH c99_block_start '(' expr ')'
2208 { $<ttype>$ = c_start_case ($4.value); }
2209 start_break c99_block_lineno_labeled_stmt
2210 { c_finish_case ($8);
2212 add_stmt (build (LABEL_EXPR, void_type_node,
2215 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2218 /* Parse a single real statement, not including any labels or compounds. */
2221 { $$ = c_finish_expr_stmt ($1.value); }
2233 { $$ = c_finish_bc_stmt (&c_break_label, true); }
2235 { $$ = c_finish_bc_stmt (&c_cont_label, false); }
2237 { $$ = c_finish_return (NULL_TREE); }
2239 { $$ = c_finish_return ($2.value); }
2241 | GOTO identifier ';'
2242 { $$ = c_finish_goto_label ($2); }
2244 { $$ = c_finish_goto_ptr ($3.value); }
2249 { $$ = objc_build_throw_stmt ($2.value); }
2251 { $$ = objc_build_throw_stmt (NULL_TREE); }
2252 | objc_try_catch_stmt
2254 | AT_SYNCHRONIZED save_location '(' expr ')' compstmt
2255 { objc_build_synchronized ($2, $4.value, $6); $$ = NULL_TREE; }
2259 AT_CATCH '(' parm ')'
2260 { objc_begin_catch_clause (grokparm ($3)); }
2264 objc_catch_prefix '{' compstmt_nostart
2265 { objc_finish_catch_clause (); }
2266 | objc_catch_prefix '{' error '}'
2267 { objc_finish_catch_clause (); }
2270 objc_opt_catch_list:
2272 | objc_opt_catch_list objc_catch_clause
2275 objc_try_catch_clause:
2276 AT_TRY save_location compstmt
2277 { objc_begin_try_stmt ($2, $3); }
2281 objc_finally_clause:
2282 AT_FINALLY save_location compstmt
2283 { objc_build_finally_clause ($2, $3); }
2286 objc_try_catch_stmt:
2287 objc_try_catch_clause
2288 { objc_finish_try_stmt (); }
2289 | objc_try_catch_clause objc_finally_clause
2290 { objc_finish_try_stmt (); }
2294 /* Parse a single or compound real statement, not including any labels. */
2297 { add_stmt ($1); $$ = NULL_TREE; }
2301 /* Any kind of label, including jump labels and case labels.
2302 ANSI C accepts labels only before statements, but we allow them
2303 also at the end of a compound statement. */
2305 label: CASE expr_no_commas ':'
2306 { $$ = do_case ($2.value, NULL_TREE); }
2307 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2308 { $$ = do_case ($2.value, $4.value); }
2310 { $$ = do_case (NULL_TREE, NULL_TREE); }
2311 | identifier save_location ':' maybe_attribute
2312 { tree label = define_label ($2, $1);
2315 decl_attributes (&label, $4, 0);
2316 $$ = add_stmt (build_stmt (LABEL_EXPR, label));
2323 /* Asm expressions and statements */
2325 /* simple_asm_expr is used in restricted contexts, where a full
2326 expression with inputs and outputs does not make sense. */
2328 ASM_KEYWORD stop_string_translation
2329 '(' STRING ')' start_string_translation
2333 /* maybeasm: used for assembly names for declarations */
2340 /* asmdef: asm() outside a function body. */
2343 { assemble_asm ($1); }
2344 | ASM_KEYWORD error start_string_translation ';'
2348 /* Full-blown asm statement with inputs, outputs, clobbers, and
2349 volatile tag allowed. */
2351 ASM_KEYWORD maybe_volatile stop_string_translation
2352 '(' asm_argument ')' start_string_translation ';'
2353 { $$ = build_asm_stmt ($2, $5); }
2359 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2360 /* output operands */
2361 | STRING ':' asm_operands
2362 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2363 /* output and input operands */
2364 | STRING ':' asm_operands ':' asm_operands
2365 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2366 /* output and input operands and clobbers */
2367 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2368 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2371 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2377 { if ($1 != ridpointers[RID_VOLATILE])
2379 warning ("%E qualifier ignored on asm", $1);
2387 /* These are the operands other than the first string and colon
2388 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2389 asm_operands: /* empty */
2391 | nonnull_asm_operands
2394 nonnull_asm_operands:
2396 | nonnull_asm_operands ',' asm_operand
2397 { $$ = chainon ($1, $3); }
2401 STRING start_string_translation '(' expr ')' stop_string_translation
2402 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1),
2404 | '[' identifier ']' STRING start_string_translation
2405 '(' expr ')' stop_string_translation
2406 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2407 IDENTIFIER_POINTER ($2));
2408 $$ = build_tree_list (build_tree_list ($2, $4), $7.value); }
2413 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2414 | asm_clobbers ',' STRING
2415 { $$ = tree_cons (NULL_TREE, $3, $1); }
2418 stop_string_translation:
2419 { c_lex_string_translate = 0; }
2422 start_string_translation:
2423 { c_lex_string_translate = 1; }
2427 /* This is what appears inside the parens in a function declarator.
2428 Its value is a list of ..._TYPE nodes. Attributes must appear here
2429 to avoid a conflict with their appearance after an open parenthesis
2430 in an abstract declarator, as in
2431 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2435 declare_parm_level (); }
2444 { mark_forward_parm_decls (); }
2446 { /* Dummy action so attributes are in known place
2447 on parser stack. */ }
2451 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2458 /* This is what appears inside the parens in a function declarator.
2459 Its value is represented in the format that grokdeclarator expects. */
2460 parmlist_2: /* empty */
2461 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2467 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2471 /* Suppress -Wold-style-definition for this case. */
2472 $$->types = error_mark_node;
2473 error ("ISO C requires a named argument before %<...%>");
2476 { $$ = get_parm_info (/*ellipsis=*/false); }
2477 | parms ',' ELLIPSIS
2478 { $$ = get_parm_info (/*ellipsis=*/true); }
2483 { push_parm_decl ($1); }
2485 { push_parm_decl ($3); }
2488 /* A single parameter declaration or parameter type name,
2489 as found in a parmlist. */
2491 declspecs_ts setspecs parm_declarator maybe_attribute
2492 { $$ = build_c_parm (current_declspecs,
2493 chainon ($4, all_prefix_attributes), $3);
2494 POP_DECLSPEC_STACK; }
2495 | declspecs_ts setspecs notype_declarator maybe_attribute
2496 { $$ = build_c_parm (current_declspecs,
2497 chainon ($4, all_prefix_attributes), $3);
2498 POP_DECLSPEC_STACK; }
2499 | declspecs_ts setspecs absdcl_maybe_attribute
2501 POP_DECLSPEC_STACK; }
2502 | declspecs_nots setspecs notype_declarator maybe_attribute
2503 { $$ = build_c_parm (current_declspecs,
2504 chainon ($4, all_prefix_attributes), $3);
2505 POP_DECLSPEC_STACK; }
2507 | declspecs_nots setspecs absdcl_maybe_attribute
2509 POP_DECLSPEC_STACK; }
2512 /* The first parm, which must suck attributes from off the top of the parser
2515 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2516 { $$ = build_c_parm (current_declspecs,
2517 chainon ($4, all_prefix_attributes), $3);
2518 POP_DECLSPEC_STACK; }
2519 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2520 { $$ = build_c_parm (current_declspecs,
2521 chainon ($4, all_prefix_attributes), $3);
2522 POP_DECLSPEC_STACK; }
2523 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2525 POP_DECLSPEC_STACK; }
2526 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2527 { $$ = build_c_parm (current_declspecs,
2528 chainon ($4, all_prefix_attributes), $3);
2529 POP_DECLSPEC_STACK; }
2531 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2533 POP_DECLSPEC_STACK; }
2538 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2539 all_prefix_attributes = prefix_attributes; }
2542 /* This is used in a function definition
2543 where either a parmlist or an identifier list is ok.
2544 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2545 parmlist_or_identifiers:
2548 declare_parm_level (); }
2549 parmlist_or_identifiers_1
2554 parmlist_or_identifiers_1:
2557 { $$ = XOBNEW (&parser_obstack, struct c_arg_info);
2563 /* Make sure we have a parmlist after attributes. */
2564 if ($<ttype>-1 != 0)
2569 /* A nonempty list of identifiers. */
2572 { $$ = build_tree_list (NULL_TREE, $1); }
2573 | identifiers ',' IDENTIFIER
2574 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2577 /* A nonempty list of identifiers, including typenames. */
2578 identifiers_or_typenames:
2580 { $$ = build_tree_list (NULL_TREE, $1); }
2581 | identifiers_or_typenames ',' identifier
2582 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2587 { $$ = SAVE_EXT_FLAGS ();
2589 warn_pointer_arith = 0;
2590 warn_traditional = 0;
2595 /* Objective-C productions. */
2605 objc_finish_implementation ();
2609 /* A nonempty list of identifiers. */
2612 { $$ = build_tree_list (NULL_TREE, $1); }
2613 | identifier_list ',' identifier
2614 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2618 AT_CLASS identifier_list ';'
2620 objc_declare_class ($2);
2625 AT_ALIAS identifier identifier ';'
2627 objc_declare_alias ($2, $3);
2632 ':' identifier { $$ = $2; }
2633 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2637 '{' ivar_decl_list '}'
2642 AT_INTERFACE identifier superclass protocolrefs
2644 objc_start_class_interface ($2, $3, $4);
2648 objc_continue_interface ();
2650 methodprotolist AT_END
2652 objc_finish_interface ();
2655 | AT_IMPLEMENTATION identifier superclass
2657 objc_start_class_implementation ($2, $3);
2661 objc_continue_implementation ();
2664 | AT_INTERFACE identifier '(' identifier ')' protocolrefs
2666 objc_start_category_interface ($2, $4, $6);
2668 methodprotolist AT_END
2670 objc_finish_interface ();
2673 | AT_IMPLEMENTATION identifier '(' identifier ')'
2675 objc_start_category_implementation ($2, $4);
2680 AT_PROTOCOL identifier protocolrefs
2682 objc_pq_context = 1;
2683 objc_start_protocol ($2, $3);
2685 methodprotolist AT_END
2687 objc_pq_context = 0;
2688 objc_finish_interface ();
2690 /* The @protocol forward-declaration production introduces a
2691 reduce/reduce conflict on ';', which should be resolved in
2692 favor of the production 'identifier_list -> identifier'. */
2693 | AT_PROTOCOL identifier_list ';'
2695 objc_declare_protocols ($2);
2704 | non_empty_protocolrefs
2707 non_empty_protocolrefs:
2708 ARITHCOMPARE identifier_list ARITHCOMPARE
2710 if ($1 == LT_EXPR && $3 == GT_EXPR)
2719 | ivar_decl_list visibility_spec ivar_decls
2724 | AT_PRIVATE { objc_set_visibility (2); }
2725 | AT_PROTECTED { objc_set_visibility (0); }
2726 | AT_PUBLIC { objc_set_visibility (1); }
2731 | ivar_decls ivar_decl ';'
2735 pedwarn ("extra semicolon in struct or union specified");
2742 /* Comma-separated ivars are chained together in
2743 reverse order; add them one by one. */
2744 tree ivar = nreverse ($1);
2746 for (; ivar; ivar = TREE_CHAIN (ivar))
2747 objc_add_instance_variable (copy_node (ivar));
2756 pedwarn ("extra semicolon in method definition specified");
2768 objc_set_method_type ($1);
2769 objc_pq_context = 1;
2773 objc_pq_context = 0;
2774 objc_start_method_definition ($3);
2778 objc_finish_method_definition (current_function_decl);
2782 /* the reason for the strange actions in this rule
2783 is so that notype_initdecls when reached via datadef
2784 can find a valid list of type and sc specs in $0. */
2788 | methodprotolist methodproto
2789 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2800 objc_set_method_type ($1);
2801 /* Remember protocol qualifiers in prototypes. */
2802 objc_pq_context = 1;
2806 /* Forget protocol qualifiers here. */
2807 objc_pq_context = 0;
2808 objc_add_method_declaration ($3);
2814 '(' objc_typename ')' unaryselector
2816 $$ = objc_build_method_signature ($2, $4, NULL_TREE);
2821 $$ = objc_build_method_signature (NULL_TREE, $1, NULL_TREE);
2824 | '(' objc_typename ')' keywordselector optparmlist
2826 $$ = objc_build_method_signature ($2, $4, $5);
2829 | keywordselector optparmlist
2831 $$ = objc_build_method_signature (NULL_TREE, $1, $2);
2835 /* Optional ObjC method parameters follow the C syntax, and may include '...'
2836 to denote a variable number of arguments. */
2839 optparms optellipsis
2841 TREE_OVERFLOW ($$) = $2;
2848 $$ = make_node (TREE_LIST);
2852 $$ = chainon ($1, build_tree_list (NULL_TREE,
2875 | keywordselector keyworddecl
2877 $$ = chainon ($1, $2);
2890 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
2891 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
2892 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
2893 | TYPESPEC | TYPE_QUAL
2901 objc_quals objc_qual
2903 $$ = chainon ($1, build_tree_list (NULL_TREE, $2));
2914 $$ = build_tree_list ($1, groktypename ($2));
2918 $$ = build_tree_list ($1, NULL_TREE);
2923 selector ':' '(' objc_typename ')' identifier
2925 $$ = objc_build_keyword_decl ($1, $4, $6);
2928 | selector ':' identifier
2930 $$ = objc_build_keyword_decl ($1, NULL_TREE, $3);
2933 | ':' '(' objc_typename ')' identifier
2935 $$ = objc_build_keyword_decl (NULL_TREE, $3, $5);
2940 $$ = objc_build_keyword_decl (NULL_TREE, NULL_TREE, $2);
2951 | keywordarglist keywordarg
2953 $$ = chainon ($1, $2);
2961 if (TREE_CHAIN ($1) == NULL_TREE)
2962 /* just return the expr., remove a level of indirection */
2963 $$ = TREE_VALUE ($1);
2965 /* we have a comma expr., we will collapse later */
2971 selector ':' keywordexpr
2973 $$ = build_tree_list ($1, $3);
2977 $$ = build_tree_list (NULL_TREE, $2);
2986 $$ = objc_get_class_reference ($1);
2990 $$ = objc_get_class_reference ($1);
2995 '[' receiver messageargs ']'
2996 { $$ = build_tree_list ($2, $3); }
3006 | keywordnamelist keywordname
3008 $$ = chainon ($1, $2);
3015 $$ = build_tree_list ($1, NULL_TREE);
3019 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3024 AT_SELECTOR '(' selectorarg ')'
3031 AT_PROTOCOL '(' identifier ')'
3037 /* extension to support C-structures in the archiver */
3040 AT_ENCODE '(' typename ')'
3042 $$ = groktypename ($3);
3049 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3050 cpplib.h's token codes into yacc's token codes. */
3052 static enum cpp_ttype last_token;
3054 /* The reserved keyword table. */
3058 ENUM_BITFIELD(rid) rid : 16;
3059 unsigned int disable : 16;
3062 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3064 #define D_C89 0x01 /* not in C89 */
3065 #define D_EXT 0x02 /* GCC extension */
3066 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3067 #define D_OBJC 0x08 /* Objective C only */
3069 static const struct resword reswords[] =
3071 { "_Bool", RID_BOOL, 0 },
3072 { "_Complex", RID_COMPLEX, 0 },
3073 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3074 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3075 { "__alignof", RID_ALIGNOF, 0 },
3076 { "__alignof__", RID_ALIGNOF, 0 },
3077 { "__asm", RID_ASM, 0 },
3078 { "__asm__", RID_ASM, 0 },
3079 { "__attribute", RID_ATTRIBUTE, 0 },
3080 { "__attribute__", RID_ATTRIBUTE, 0 },
3081 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3082 { "__builtin_offsetof", RID_OFFSETOF, 0 },
3083 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3084 { "__builtin_va_arg", RID_VA_ARG, 0 },
3085 { "__complex", RID_COMPLEX, 0 },
3086 { "__complex__", RID_COMPLEX, 0 },
3087 { "__const", RID_CONST, 0 },
3088 { "__const__", RID_CONST, 0 },
3089 { "__extension__", RID_EXTENSION, 0 },
3090 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3091 { "__imag", RID_IMAGPART, 0 },
3092 { "__imag__", RID_IMAGPART, 0 },
3093 { "__inline", RID_INLINE, 0 },
3094 { "__inline__", RID_INLINE, 0 },
3095 { "__label__", RID_LABEL, 0 },
3096 { "__ptrbase", RID_PTRBASE, 0 },
3097 { "__ptrbase__", RID_PTRBASE, 0 },
3098 { "__ptrextent", RID_PTREXTENT, 0 },
3099 { "__ptrextent__", RID_PTREXTENT, 0 },
3100 { "__ptrvalue", RID_PTRVALUE, 0 },
3101 { "__ptrvalue__", RID_PTRVALUE, 0 },
3102 { "__real", RID_REALPART, 0 },
3103 { "__real__", RID_REALPART, 0 },
3104 { "__restrict", RID_RESTRICT, 0 },
3105 { "__restrict__", RID_RESTRICT, 0 },
3106 { "__signed", RID_SIGNED, 0 },
3107 { "__signed__", RID_SIGNED, 0 },
3108 { "__thread", RID_THREAD, 0 },
3109 { "__typeof", RID_TYPEOF, 0 },
3110 { "__typeof__", RID_TYPEOF, 0 },
3111 { "__volatile", RID_VOLATILE, 0 },
3112 { "__volatile__", RID_VOLATILE, 0 },
3113 { "asm", RID_ASM, D_EXT },
3114 { "auto", RID_AUTO, 0 },
3115 { "break", RID_BREAK, 0 },
3116 { "case", RID_CASE, 0 },
3117 { "char", RID_CHAR, 0 },
3118 { "const", RID_CONST, 0 },
3119 { "continue", RID_CONTINUE, 0 },
3120 { "default", RID_DEFAULT, 0 },
3121 { "do", RID_DO, 0 },
3122 { "double", RID_DOUBLE, 0 },
3123 { "else", RID_ELSE, 0 },
3124 { "enum", RID_ENUM, 0 },
3125 { "extern", RID_EXTERN, 0 },
3126 { "float", RID_FLOAT, 0 },
3127 { "for", RID_FOR, 0 },
3128 { "goto", RID_GOTO, 0 },
3129 { "if", RID_IF, 0 },
3130 { "inline", RID_INLINE, D_EXT89 },
3131 { "int", RID_INT, 0 },
3132 { "long", RID_LONG, 0 },
3133 { "register", RID_REGISTER, 0 },
3134 { "restrict", RID_RESTRICT, D_C89 },
3135 { "return", RID_RETURN, 0 },
3136 { "short", RID_SHORT, 0 },
3137 { "signed", RID_SIGNED, 0 },
3138 { "sizeof", RID_SIZEOF, 0 },
3139 { "static", RID_STATIC, 0 },
3140 { "struct", RID_STRUCT, 0 },
3141 { "switch", RID_SWITCH, 0 },
3142 { "typedef", RID_TYPEDEF, 0 },
3143 { "typeof", RID_TYPEOF, D_EXT },
3144 { "union", RID_UNION, 0 },
3145 { "unsigned", RID_UNSIGNED, 0 },
3146 { "void", RID_VOID, 0 },
3147 { "volatile", RID_VOLATILE, 0 },
3148 { "while", RID_WHILE, 0 },
3151 { "id", RID_ID, D_OBJC },
3153 /* These objc keywords are recognized only immediately after
3155 { "class", RID_AT_CLASS, D_OBJC },
3156 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3157 { "defs", RID_AT_DEFS, D_OBJC },
3158 { "encode", RID_AT_ENCODE, D_OBJC },
3159 { "end", RID_AT_END, D_OBJC },
3160 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3161 { "interface", RID_AT_INTERFACE, D_OBJC },
3162 { "private", RID_AT_PRIVATE, D_OBJC },
3163 { "protected", RID_AT_PROTECTED, D_OBJC },
3164 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3165 { "public", RID_AT_PUBLIC, D_OBJC },
3166 { "selector", RID_AT_SELECTOR, D_OBJC },
3167 { "throw", RID_AT_THROW, D_OBJC },
3168 { "try", RID_AT_TRY, D_OBJC },
3169 { "catch", RID_AT_CATCH, D_OBJC },
3170 { "finally", RID_AT_FINALLY, D_OBJC },
3171 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3172 /* These are recognized only in protocol-qualifier context
3174 { "bycopy", RID_BYCOPY, D_OBJC },
3175 { "byref", RID_BYREF, D_OBJC },
3176 { "in", RID_IN, D_OBJC },
3177 { "inout", RID_INOUT, D_OBJC },
3178 { "oneway", RID_ONEWAY, D_OBJC },
3179 { "out", RID_OUT, D_OBJC },
3182 #define N_reswords (sizeof reswords / sizeof (struct resword))
3184 /* Table mapping from RID_* constants to yacc token numbers.
3185 Unfortunately we have to have entries for all the keywords in all
3187 static const short rid_to_yy[RID_MAX] =
3189 /* RID_STATIC */ STATIC,
3190 /* RID_UNSIGNED */ TYPESPEC,
3191 /* RID_LONG */ TYPESPEC,
3192 /* RID_CONST */ TYPE_QUAL,
3193 /* RID_EXTERN */ SCSPEC,
3194 /* RID_REGISTER */ SCSPEC,
3195 /* RID_TYPEDEF */ SCSPEC,
3196 /* RID_SHORT */ TYPESPEC,
3197 /* RID_INLINE */ SCSPEC,
3198 /* RID_VOLATILE */ TYPE_QUAL,
3199 /* RID_SIGNED */ TYPESPEC,
3200 /* RID_AUTO */ SCSPEC,
3201 /* RID_RESTRICT */ TYPE_QUAL,
3204 /* RID_COMPLEX */ TYPESPEC,
3205 /* RID_THREAD */ SCSPEC,
3209 /* RID_VIRTUAL */ 0,
3210 /* RID_EXPLICIT */ 0,
3212 /* RID_MUTABLE */ 0,
3215 /* RID_IN */ OBJC_TYPE_QUAL,
3216 /* RID_OUT */ OBJC_TYPE_QUAL,
3217 /* RID_INOUT */ OBJC_TYPE_QUAL,
3218 /* RID_BYCOPY */ OBJC_TYPE_QUAL,
3219 /* RID_BYREF */ OBJC_TYPE_QUAL,
3220 /* RID_ONEWAY */ OBJC_TYPE_QUAL,
3223 /* RID_INT */ TYPESPEC,
3224 /* RID_CHAR */ TYPESPEC,
3225 /* RID_FLOAT */ TYPESPEC,
3226 /* RID_DOUBLE */ TYPESPEC,
3227 /* RID_VOID */ TYPESPEC,
3228 /* RID_ENUM */ ENUM,
3229 /* RID_STRUCT */ STRUCT,
3230 /* RID_UNION */ UNION,
3232 /* RID_ELSE */ ELSE,
3233 /* RID_WHILE */ WHILE,
3236 /* RID_SWITCH */ SWITCH,
3237 /* RID_CASE */ CASE,
3238 /* RID_DEFAULT */ DEFAULT,
3239 /* RID_BREAK */ BREAK,
3240 /* RID_CONTINUE */ CONTINUE,
3241 /* RID_RETURN */ RETURN,
3242 /* RID_GOTO */ GOTO,
3243 /* RID_SIZEOF */ SIZEOF,
3246 /* RID_ASM */ ASM_KEYWORD,
3247 /* RID_TYPEOF */ TYPEOF,
3248 /* RID_ALIGNOF */ ALIGNOF,
3249 /* RID_ATTRIBUTE */ ATTRIBUTE,
3250 /* RID_VA_ARG */ VA_ARG,
3251 /* RID_EXTENSION */ EXTENSION,
3252 /* RID_IMAGPART */ IMAGPART,
3253 /* RID_REALPART */ REALPART,
3254 /* RID_LABEL */ LABEL,
3255 /* RID_PTRBASE */ PTR_BASE,
3256 /* RID_PTREXTENT */ PTR_EXTENT,
3257 /* RID_PTRVALUE */ PTR_VALUE,
3259 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3260 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3262 /* RID_FUNCTION_NAME */ FUNC_NAME,
3263 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3264 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3267 /* RID_BOOL */ TYPESPEC,
3271 /* RID_PRIVATE */ 0,
3272 /* RID_PROTECTED */ 0,
3273 /* RID_TEMPLATE */ 0,
3278 /* RID_NAMESPACE */ 0,
3280 /* RID_OFFSETOF */ OFFSETOF,
3281 /* RID_OPERATOR */ 0,
3286 /* RID_TYPENAME */ 0,
3291 /* RID_CONSTCAST */ 0,
3292 /* RID_DYNCAST */ 0,
3293 /* RID_REINTCAST */ 0,
3294 /* RID_STATCAST */ 0,
3297 /* RID_ID */ OBJECTNAME,
3298 /* RID_AT_ENCODE */ AT_ENCODE,
3299 /* RID_AT_END */ AT_END,
3300 /* RID_AT_CLASS */ AT_CLASS,
3301 /* RID_AT_ALIAS */ AT_ALIAS,
3302 /* RID_AT_DEFS */ AT_DEFS,
3303 /* RID_AT_PRIVATE */ AT_PRIVATE,
3304 /* RID_AT_PROTECTED */ AT_PROTECTED,
3305 /* RID_AT_PUBLIC */ AT_PUBLIC,
3306 /* RID_AT_PROTOCOL */ AT_PROTOCOL,
3307 /* RID_AT_SELECTOR */ AT_SELECTOR,
3308 /* RID_AT_THROW */ AT_THROW,
3309 /* RID_AT_TRY */ AT_TRY,
3310 /* RID_AT_CATCH */ AT_CATCH,
3311 /* RID_AT_FINALLY */ AT_FINALLY,
3312 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3313 /* RID_AT_INTERFACE */ AT_INTERFACE,
3314 /* RID_AT_IMPLEMENTATION */ AT_IMPLEMENTATION
3318 init_reswords (void)
3322 int mask = (flag_isoc99 ? 0 : D_C89)
3323 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3325 if (!c_dialect_objc ())
3328 ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
3329 for (i = 0; i < N_reswords; i++)
3331 /* If a keyword is disabled, do not enter it into the table
3332 and so create a canonical spelling that isn't a keyword. */
3333 if (reswords[i].disable & mask)
3336 id = get_identifier (reswords[i].word);
3337 C_RID_CODE (id) = reswords[i].rid;
3338 C_IS_RESERVED_WORD (id) = 1;
3339 ridpointers [(int) reswords[i].rid] = id;
3343 #define NAME(type) cpp_type2name (type)
3346 yyerror (const char *msgid)
3348 c_parse_error (msgid, last_token, yylval.ttype);
3357 int objc_force_identifier = objc_need_raw_identifier;
3358 OBJC_NEED_RAW_IDENTIFIER (0);
3361 if (C_IS_RESERVED_WORD (yylval.ttype))
3363 enum rid rid_code = C_RID_CODE (yylval.ttype);
3366 /* Turn non-typedefed refs to "id" into plain identifiers; this
3367 allows constructs like "void foo(id id);" to work. */
3368 if (rid_code == RID_ID)
3370 decl = lookup_name (yylval.ttype);
3371 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3375 if (!OBJC_IS_AT_KEYWORD (rid_code)
3376 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3379 /* Return the canonical spelling for this keyword. */
3380 yylval.ttype = ridpointers[(int) rid_code];
3381 return rid_to_yy[(int) rid_code];
3385 decl = lookup_name (yylval.ttype);
3388 if (TREE_CODE (decl) == TYPE_DECL)
3394 tree objc_interface_decl = objc_is_class_name (yylval.ttype);
3395 /* ObjC class names are in the same namespace as variables and
3396 typedefs, and hence are shadowed by local declarations. */
3397 if (objc_interface_decl
3398 && (global_bindings_p ()
3399 || (!objc_force_identifier && !decl)))
3401 yylval.ttype = objc_interface_decl;
3414 last_token = c_lex (&yylval.ttype);
3417 case CPP_EQ: return '=';
3418 case CPP_NOT: return '!';
3419 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3420 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3421 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3422 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3423 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3424 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3425 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3426 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3427 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3428 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3429 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3430 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3432 case CPP_COMPL: return '~';
3433 case CPP_AND_AND: return ANDAND;
3434 case CPP_OR_OR: return OROR;
3435 case CPP_QUERY: return '?';
3436 case CPP_OPEN_PAREN: return '(';
3437 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3438 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3439 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3440 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3442 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3443 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3444 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3445 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3446 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3447 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3448 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3449 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3450 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3451 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3453 case CPP_OPEN_SQUARE: return '[';
3454 case CPP_CLOSE_SQUARE: return ']';
3455 case CPP_OPEN_BRACE: return '{';
3456 case CPP_CLOSE_BRACE: return '}';
3457 case CPP_ELLIPSIS: return ELLIPSIS;
3459 case CPP_PLUS_PLUS: return PLUSPLUS;
3460 case CPP_MINUS_MINUS: return MINUSMINUS;
3461 case CPP_DEREF: return POINTSAT;
3462 case CPP_DOT: return '.';
3464 /* The following tokens may affect the interpretation of any
3465 identifiers following, if doing Objective-C. */
3466 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3467 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3468 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3469 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3475 return yylexname ();
3478 /* This only happens in Objective-C; it must be a keyword. */
3479 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3490 case CPP_OBJC_STRING:
3493 /* These tokens are C++ specific (and will not be generated
3494 in C mode, but let's be cautious). */
3496 case CPP_DEREF_STAR:
3502 /* These tokens should not survive translation phase 4. */
3505 error ("syntax error at %qs token", NAME(last_token));
3518 timevar_push (TV_LEX);
3520 timevar_pop (TV_LEX);
3524 /* Function used when yydebug is set, to print a token in more detail. */
3527 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3531 fprintf (file, " [%s]", NAME(last_token));
3542 if (IDENTIFIER_POINTER (t))
3543 fprintf (file, " '%s'", IDENTIFIER_POINTER (t));
3547 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3548 if (TREE_CODE (t) == INTEGER_CST)
3551 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3552 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3558 /* This is not the ideal place to put this, but we have to get it out
3559 of c-lex.c because cp/lex.c has its own version. */
3561 /* Parse the file. */
3569 free (malloced_yyss);
3570 free (malloced_yyvs);
3576 /* Depending on the version of Bison used to compile this grammar,
3577 it may issue generic diagnostics spelled "syntax error" or
3578 "parse error". To prevent this from changing the translation
3579 template randomly, we list all the variants of this particular
3580 diagnostic here. Translators: there is no fine distinction
3581 between diagnostics with "syntax error" in them, and diagnostics
3582 with "parse error" in them. It's okay to give them both the same
3584 const char d1[] = N_("syntax error");
3585 const char d2[] = N_("parse error");
3586 const char d3[] = N_("syntax error; also virtual memory exhausted");
3587 const char d4[] = N_("parse error; also virtual memory exhausted");
3588 const char d5[] = N_("syntax error: cannot back up");
3589 const char d6[] = N_("parse error: cannot back up");
3592 #include "gt-c-parse.h"