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. */
58 /* Like YYERROR but do call yyerror. */
59 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
61 /* Like the default stack expander, except (1) use realloc when possible,
62 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
64 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
65 give malloced_yyvs its proper type. This is ok since all we need from
66 it is to be able to free it. */
68 static short *malloced_yyss;
69 static void *malloced_yyvs;
71 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
76 newsize = *(YYSSZ) *= 2; \
79 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
80 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
84 newss = really_call_malloc (newsize * sizeof (short)); \
85 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
87 memcpy (newss, *(SS), (SSSIZE)); \
89 memcpy (newvs, *(VS), (VSSIZE)); \
91 if (!newss || !newvs) \
98 malloced_yyss = newss; \
99 malloced_yyvs = (void *) newvs; \
105 %union {long itype; tree ttype; struct c_expr exprtype; enum tree_code code;
106 location_t location; }
108 /* All identifiers that are not reserved words
109 and are not declared typedefs in the current block */
112 /* All identifiers that are declared typedefs in the current block.
113 In some contexts, they are treated just like IDENTIFIER,
114 but they can also serve as typespecs in declarations. */
117 /* Reserved words that specify storage class.
118 yylval contains an IDENTIFIER_NODE which indicates which one. */
119 %token SCSPEC /* Storage class other than static. */
120 %token STATIC /* Static storage class. */
122 /* Reserved words that specify type.
123 yylval contains an IDENTIFIER_NODE which indicates which one. */
126 /* Reserved words that qualify type: "const", "volatile", or "restrict".
127 yylval contains an IDENTIFIER_NODE which indicates which one. */
130 /* Character or numeric constants.
131 yylval is the node for the constant. */
134 /* String constants in raw form.
135 yylval is a STRING_CST node. */
139 /* "...", used for functions with variable arglists. */
142 /* the reserved words */
143 /* SCO include files test "ASM", so use something else. */
144 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
145 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
146 %token ATTRIBUTE EXTENSION LABEL
147 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
148 %token PTR_VALUE PTR_BASE PTR_EXTENT
149 %token FUNC_NAME OFFSETOF
151 /* Add precedence rules to solve dangling else s/r conflict */
155 /* Define the operator tokens and their precedences.
156 The value is an integer because, if used, it is the tree code
157 to use in the expression made from the operator. */
159 %right <code> ASSIGN '='
160 %right <code> '?' ':'
166 %left <code> EQCOMPARE
167 %left <code> ARITHCOMPARE
168 %left <code> LSHIFT RSHIFT
170 %left <code> '*' '/' '%'
171 %right <code> UNARY PLUSPLUS MINUSMINUS
173 %left <code> POINTSAT '.' '(' '['
175 /* The Objective-C keywords. These are included in C and in
176 Objective C, so that the token codes are the same in both. */
177 %token AT_INTERFACE AT_IMPLEMENTATION AT_END AT_SELECTOR AT_DEFS AT_ENCODE
178 %token CLASSNAME AT_PUBLIC AT_PRIVATE AT_PROTECTED AT_PROTOCOL
179 %token OBJECTNAME AT_CLASS AT_ALIAS
180 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
184 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
185 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
187 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT STRING FUNC_NAME
188 %type <ttype> nonnull_exprlist exprlist
189 %type <exprtype> expr expr_no_commas cast_expr unary_expr primary
190 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
191 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
192 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
193 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
194 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
195 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
196 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
197 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
198 %type <ttype> declspecs_ts declspecs_nots
199 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
200 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
201 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
202 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
203 %type <ttype> typespec_nonreserved_nonattr
204 %type <ttype> offsetof_member_designator
206 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
207 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
208 %type <exprtype> init
209 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
210 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
211 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
212 %type <ttype> any_word
214 %type <ttype> compstmt compstmt_start compstmt_primary_start
215 %type <ttype> stmt label stmt_nocomp start_break start_continue
217 %type <ttype> c99_block_start c99_block_lineno_labeled_stmt
218 %type <ttype> if_statement_1 if_statement_2
219 %type <ttype> declarator
220 %type <ttype> notype_declarator after_type_declarator
221 %type <ttype> parm_declarator
222 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
223 %type <ttype> array_declarator
225 %type <ttype> structsp_attr structsp_nonattr
226 %type <ttype> component_decl_list component_decl_list2
227 %type <ttype> component_decl components components_notype component_declarator
228 %type <ttype> component_notype_declarator
229 %type <ttype> enumlist enumerator
230 %type <ttype> struct_head union_head enum_head
231 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
232 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
233 %type <ttype> condition xexpr for_cond_expr for_incr_expr
234 %type <ttype> parms parm firstparm identifiers
236 %type <ttype> parmlist parmlist_1 parmlist_2
237 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
238 %type <ttype> identifiers_or_typenames
240 %type <itype> setspecs setspecs_fp extension
242 %type <location> save_location
245 /* the Objective-C nonterminals */
247 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
248 %type <ttype> methoddecl unaryselector keywordselector selector
249 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
250 %type <ttype> keywordexpr keywordarglist keywordarg
251 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
252 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
253 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
255 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
257 %type <ttype> superclass
261 /* List of types and structure classes of the current declaration. */
262 static GTY(()) tree current_declspecs;
263 static GTY(()) tree prefix_attributes;
265 /* List of all the attributes applying to the identifier currently being
266 declared; includes prefix_attributes and possibly some more attributes
267 just after a comma. */
268 static GTY(()) tree all_prefix_attributes;
270 /* Stack of saved values of current_declspecs, prefix_attributes and
271 all_prefix_attributes. */
272 static GTY(()) tree declspec_stack;
274 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
275 should be called from the productions making use of setspecs. */
276 #define PUSH_DECLSPEC_STACK \
278 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
279 all_prefix_attributes), \
284 #define POP_DECLSPEC_STACK \
286 current_declspecs = TREE_VALUE (declspec_stack); \
287 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
288 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
289 declspec_stack = TREE_CHAIN (declspec_stack); \
292 /* For __extension__, save/restore the warning flags which are
293 controlled by __extension__. */
294 #define SAVE_EXT_FLAGS() \
296 | (warn_pointer_arith << 1) \
297 | (warn_traditional << 2) \
300 #define RESTORE_EXT_FLAGS(val) \
302 pedantic = val & 1; \
303 warn_pointer_arith = (val >> 1) & 1; \
304 warn_traditional = (val >> 2) & 1; \
305 flag_iso = (val >> 3) & 1; \
309 /* Objective-C specific parser/lexer information */
311 static enum tree_code objc_inherit_code;
312 static int objc_pq_context = 0, objc_public_flag = 0;
314 /* The following flag is needed to contextualize ObjC lexical analysis.
315 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
316 an identifier to an ObjC class, even if a class with that name
318 static int objc_need_raw_identifier;
319 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
323 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
326 /* Tell yyparse how to print a token's value, if yydebug is set. */
328 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
330 static void yyprint (FILE *, int, YYSTYPE);
331 static void yyerror (const char *);
332 static int yylexname (void);
333 static inline int _yylex (void);
334 static int yylex (void);
335 static void init_reswords (void);
337 /* Initialisation routine for this file. */
349 pedwarn ("ISO C forbids an empty source file");
354 /* the reason for the strange actions in this rule
355 is so that notype_initdecls when reached via datadef
356 can find a valid list of type and sc specs in $0. */
359 {$<ttype>$ = NULL_TREE; } extdef
360 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
368 { RESTORE_EXT_FLAGS ($1); }
375 setspecs notype_initdecls ';'
377 error ("ISO C forbids data definition with no type or storage class");
379 warning ("data definition has no type or storage class");
381 POP_DECLSPEC_STACK; }
382 | declspecs_nots setspecs notype_initdecls ';'
383 { POP_DECLSPEC_STACK; }
384 | declspecs_ts setspecs initdecls ';'
385 { POP_DECLSPEC_STACK; }
392 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
396 declspecs_ts setspecs declarator
397 { if (! start_function (current_declspecs, $3,
398 all_prefix_attributes))
401 old_style_parm_decls save_location
402 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
403 store_parm_decls (); }
405 { finish_function ();
406 POP_DECLSPEC_STACK; }
407 | declspecs_ts setspecs declarator error
408 { POP_DECLSPEC_STACK; }
409 | declspecs_nots setspecs notype_declarator
410 { if (! start_function (current_declspecs, $3,
411 all_prefix_attributes))
414 old_style_parm_decls save_location
415 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
416 store_parm_decls (); }
418 { finish_function ();
419 POP_DECLSPEC_STACK; }
420 | declspecs_nots setspecs notype_declarator error
421 { POP_DECLSPEC_STACK; }
422 | setspecs notype_declarator
423 { if (! start_function (NULL_TREE, $2,
424 all_prefix_attributes))
427 old_style_parm_decls save_location
428 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
429 store_parm_decls (); }
431 { finish_function ();
432 POP_DECLSPEC_STACK; }
433 | setspecs notype_declarator error
434 { POP_DECLSPEC_STACK; }
449 { $$ = NEGATE_EXPR; }
453 if (warn_traditional && !in_system_header)
454 warning ("traditional C rejects the unary plus operator");
458 { $$ = PREINCREMENT_EXPR; }
460 { $$ = PREDECREMENT_EXPR; }
462 { $$ = BIT_NOT_EXPR; }
464 { $$ = TRUTH_NOT_EXPR; }
468 | expr ',' expr_no_commas
469 { $$.value = build_compound_expr ($1.value, $3.value);
470 $$.original_code = COMPOUND_EXPR; }
481 { $$ = build_tree_list (NULL_TREE, $1.value); }
482 | nonnull_exprlist ',' expr_no_commas
483 { chainon ($1, build_tree_list (NULL_TREE, $3.value)); }
488 | '*' cast_expr %prec UNARY
489 { $$.value = build_indirect_ref ($2.value, "unary *");
490 $$.original_code = ERROR_MARK; }
491 /* __extension__ turns off -pedantic for following primary. */
492 | extension cast_expr %prec UNARY
494 RESTORE_EXT_FLAGS ($1); }
495 | unop cast_expr %prec UNARY
496 { $$.value = build_unary_op ($1, $2.value, 0);
497 overflow_warning ($$.value);
498 $$.original_code = ERROR_MARK; }
499 /* Refer to the address of a label as a pointer. */
501 { $$.value = finish_label_address_expr ($2);
502 $$.original_code = ERROR_MARK; }
503 | sizeof unary_expr %prec UNARY
505 if (TREE_CODE ($2.value) == COMPONENT_REF
506 && DECL_C_BIT_FIELD (TREE_OPERAND ($2.value, 1)))
507 error ("`sizeof' applied to a bit-field");
508 $$.value = c_sizeof (TREE_TYPE ($2.value));
509 $$.original_code = ERROR_MARK; }
510 | sizeof '(' typename ')' %prec HYPERUNARY
512 $$.value = c_sizeof (groktypename ($3));
513 $$.original_code = ERROR_MARK; }
514 | alignof unary_expr %prec UNARY
516 $$.value = c_alignof_expr ($2.value);
517 $$.original_code = ERROR_MARK; }
518 | alignof '(' typename ')' %prec HYPERUNARY
520 $$.value = c_alignof (groktypename ($3));
521 $$.original_code = ERROR_MARK; }
522 | REALPART cast_expr %prec UNARY
523 { $$.value = build_unary_op (REALPART_EXPR, $2.value, 0);
524 $$.original_code = ERROR_MARK; }
525 | IMAGPART cast_expr %prec UNARY
526 { $$.value = build_unary_op (IMAGPART_EXPR, $2.value, 0);
527 $$.original_code = ERROR_MARK; }
531 SIZEOF { skip_evaluation++; }
535 ALIGNOF { skip_evaluation++; }
539 TYPEOF { skip_evaluation++; }
544 | '(' typename ')' cast_expr %prec UNARY
545 { $$.value = c_cast_expr ($2, $4.value);
546 $$.original_code = ERROR_MARK; }
551 | expr_no_commas '+' expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas '-' expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas '*' expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas '/' expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas '%' expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas LSHIFT expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas RSHIFT expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas ARITHCOMPARE expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas EQCOMPARE expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '&' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas '|' expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas '^' expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas ANDAND
576 { $1.value = lang_hooks.truthvalue_conversion
577 (default_conversion ($1.value));
578 skip_evaluation += $1.value == truthvalue_false_node; }
580 { skip_evaluation -= $1.value == truthvalue_false_node;
581 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
582 | expr_no_commas OROR
583 { $1.value = lang_hooks.truthvalue_conversion
584 (default_conversion ($1.value));
585 skip_evaluation += $1.value == truthvalue_true_node; }
587 { skip_evaluation -= $1.value == truthvalue_true_node;
588 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
590 { $1.value = lang_hooks.truthvalue_conversion
591 (default_conversion ($1.value));
592 skip_evaluation += $1.value == truthvalue_false_node; }
594 { skip_evaluation += (($1.value == truthvalue_true_node)
595 - ($1.value == truthvalue_false_node)); }
597 { skip_evaluation -= $1.value == truthvalue_true_node;
598 $$.value = build_conditional_expr ($1.value, $4.value,
600 $$.original_code = ERROR_MARK; }
603 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
604 /* Make sure first operand is calculated only once. */
605 $<ttype>2 = save_expr (default_conversion ($1.value));
606 $1.value = lang_hooks.truthvalue_conversion ($<ttype>2);
607 skip_evaluation += $1.value == truthvalue_true_node; }
609 { skip_evaluation -= $1.value == truthvalue_true_node;
610 $$.value = build_conditional_expr ($1.value, $<ttype>2,
612 $$.original_code = ERROR_MARK; }
613 | expr_no_commas '=' expr_no_commas
614 { $$.value = build_modify_expr ($1.value, NOP_EXPR, $3.value);
615 $$.original_code = MODIFY_EXPR;
617 | expr_no_commas ASSIGN expr_no_commas
618 { $$.value = build_modify_expr ($1.value, $2, $3.value);
619 TREE_NO_WARNING ($$.value) = 1;
620 $$.original_code = ERROR_MARK;
627 if (yychar == YYEMPTY)
629 $$.value = build_external_ref ($1, yychar == '(');
630 $$.original_code = ERROR_MARK;
633 { $$.value = $1; $$.original_code = ERROR_MARK; }
635 { $$.value = $1; $$.original_code = STRING_CST; }
637 { $$.value = fname_decl (C_RID_CODE ($1), $1);
638 $$.original_code = ERROR_MARK; }
639 | '(' typename ')' '{'
640 { start_init (NULL_TREE, NULL, 0);
641 $2 = groktypename ($2);
642 really_start_incremental_init ($2); }
643 initlist_maybe_comma '}' %prec UNARY
644 { struct c_expr init = pop_init_level (0);
645 tree constructor = init.value;
648 maybe_warn_string_init (type, init);
650 if (pedantic && ! flag_isoc99)
651 pedwarn ("ISO C90 forbids compound literals");
652 $$.value = build_compound_literal (type, constructor);
653 $$.original_code = ERROR_MARK;
656 { $$.value = $2.value;
657 if (TREE_CODE ($$.value) == MODIFY_EXPR)
658 TREE_NO_WARNING ($$.value) = 1;
659 $$.original_code = ERROR_MARK; }
661 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
662 | compstmt_primary_start compstmt_nostart ')'
664 pedwarn ("ISO C forbids braced-groups within expressions");
665 $$.value = c_finish_stmt_expr ($1);
666 $$.original_code = ERROR_MARK;
668 | compstmt_primary_start error ')'
669 { c_finish_stmt_expr ($1);
670 $$.value = error_mark_node;
671 $$.original_code = ERROR_MARK;
673 | primary '(' exprlist ')' %prec '.'
674 { $$.value = build_function_call ($1.value, $3);
675 $$.original_code = ERROR_MARK; }
676 | VA_ARG '(' expr_no_commas ',' typename ')'
677 { $$.value = build_va_arg ($3.value, groktypename ($5));
678 $$.original_code = ERROR_MARK; }
680 | OFFSETOF '(' typename ',' offsetof_member_designator ')'
681 { $$.value = build_offsetof (groktypename ($3), $5);
682 $$.original_code = ERROR_MARK; }
683 | OFFSETOF '(' error ')'
684 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
685 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ','
692 if (TREE_CODE (c) != INTEGER_CST)
693 error ("first argument to __builtin_choose_expr not"
695 $$ = integer_zerop (c) ? $7 : $5;
697 | CHOOSE_EXPR '(' error ')'
698 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
699 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
703 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
704 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
706 $$.value = comptypes (e1, e2)
707 ? build_int_cst (NULL_TREE, 1, 0)
708 : build_int_cst (NULL_TREE, 0, 0);
709 $$.original_code = ERROR_MARK;
711 | TYPES_COMPATIBLE_P '(' error ')'
712 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
713 | primary '[' expr ']' %prec '.'
714 { $$.value = build_array_ref ($1.value, $3.value);
715 $$.original_code = ERROR_MARK; }
716 | primary '.' identifier
717 { $$.value = build_component_ref ($1.value, $3);
718 $$.original_code = ERROR_MARK; }
719 | primary POINTSAT identifier
721 tree expr = build_indirect_ref ($1.value, "->");
722 $$.value = build_component_ref (expr, $3);
723 $$.original_code = ERROR_MARK;
726 { $$.value = build_unary_op (POSTINCREMENT_EXPR, $1.value, 0);
727 $$.original_code = ERROR_MARK; }
729 { $$.value = build_unary_op (POSTDECREMENT_EXPR, $1.value, 0);
730 $$.original_code = ERROR_MARK; }
733 { $$.value = build_message_expr ($1);
734 $$.original_code = ERROR_MARK; }
736 { $$.value = build_selector_expr ($1);
737 $$.original_code = ERROR_MARK; }
739 { $$.value = build_protocol_expr ($1);
740 $$.original_code = ERROR_MARK; }
742 { $$.value = build_encode_expr ($1);
743 $$.original_code = ERROR_MARK; }
745 { $$.value = build_objc_string_object ($1);
746 $$.original_code = ERROR_MARK; }
750 /* This is the second argument to __builtin_offsetof. We must have one
751 identifier, and beyond that we want to accept sub structure and sub
752 array references. We return tree list where each element has
753 PURPOSE set for component refs or VALUE set for array refs. We'll
754 turn this into something real inside build_offsetof. */
756 offsetof_member_designator:
758 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
759 | offsetof_member_designator '.' identifier
760 { $$ = tree_cons ($3, NULL_TREE, $1); }
761 | offsetof_member_designator '[' expr ']'
762 { $$ = tree_cons (NULL_TREE, $3.value, $1); }
765 old_style_parm_decls:
770 /* The following are analogous to lineno_decl, decls and decl
771 except that they do not allow nested functions.
772 They are used for old-style parm decls. */
774 save_location datadecl
781 | datadecls lineno_datadecl
782 | lineno_datadecl errstmt
785 /* We don't allow prefix attributes here because they cause reduce/reduce
786 conflicts: we can't know whether we're parsing a function decl with
787 attribute suffix, or function defn with attribute prefix on first old
790 declspecs_ts_nosa setspecs initdecls ';'
791 { POP_DECLSPEC_STACK; }
792 | declspecs_nots_nosa setspecs notype_initdecls ';'
793 { POP_DECLSPEC_STACK; }
794 | declspecs_ts_nosa ';'
795 { shadow_tag_warned ($1, 1);
796 pedwarn ("empty declaration"); }
797 | declspecs_nots_nosa ';'
798 { pedwarn ("empty declaration"); }
801 /* This combination which saves a lineno before a decl
802 is the normal thing to use, rather than decl itself.
803 This is to avoid shift/reduce conflicts in contexts
804 where statement labels are allowed. */
810 /* records the type and storage class specs to use for processing
811 the declarators that follow.
812 Maintains a stack of outer-level values of current_declspecs,
813 for the sake of parm declarations nested in function declarators. */
814 setspecs: /* empty */
815 { pending_xref_error ();
817 split_specs_attrs ($<ttype>0,
818 ¤t_declspecs, &prefix_attributes);
819 all_prefix_attributes = prefix_attributes; }
822 /* Possibly attributes after a comma, which should reset all_prefix_attributes
823 to prefix_attributes with these ones chained on the front. */
826 { all_prefix_attributes = chainon ($1, prefix_attributes); }
830 declspecs_ts setspecs initdecls ';'
831 { POP_DECLSPEC_STACK; }
832 | declspecs_nots setspecs notype_initdecls ';'
833 { POP_DECLSPEC_STACK; }
834 | declspecs_ts setspecs nested_function
835 { POP_DECLSPEC_STACK; }
836 | declspecs_nots setspecs notype_nested_function
837 { POP_DECLSPEC_STACK; }
841 { RESTORE_EXT_FLAGS ($1); }
844 /* A list of declaration specifiers. These are:
846 - Storage class specifiers (scspec), which for GCC currently includes
847 function specifiers ("inline").
849 - Type specifiers (typespec_*).
851 - Type qualifiers (TYPE_QUAL).
853 - Attribute specifier lists (attributes).
855 These are stored as a TREE_LIST; the head of the list is the last
856 item in the specifier list. Each entry in the list has either a
857 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
858 is a single other specifier or qualifier; and a TREE_CHAIN that is the
859 rest of the list. TREE_STATIC is set on the list if something other
860 than a storage class specifier or attribute has been seen; this is used
861 to warn for the obsolescent usage of storage class specifiers other than
862 at the start of the list. (Doing this properly would require function
863 specifiers to be handled separately from storage class specifiers.)
865 The various cases below are classified according to:
867 (a) Whether a storage class specifier is included or not; some
868 places in the grammar disallow storage class specifiers (_sc or _nosc).
870 (b) Whether a type specifier has been seen; after a type specifier,
871 a typedef name is an identifier to redeclare (_ts or _nots).
873 (c) Whether the list starts with an attribute; in certain places,
874 the grammar requires specifiers that don't start with an attribute
877 (d) Whether the list ends with an attribute (or a specifier such that
878 any following attribute would have been parsed as part of that specifier);
879 this avoids shift-reduce conflicts in the parsing of attributes
884 (i) Distinguish between function specifiers and storage class specifiers,
885 at least for the purpose of warnings about obsolescent usage.
887 (ii) Halve the number of productions here by eliminating the _sc/_nosc
888 distinction and instead checking where required that storage class
889 specifiers aren't present. */
891 /* Declspecs which contain at least one type specifier or typedef name.
892 (Just `const' or `volatile' is not enough.)
893 A typedef'd name following these is taken as a name to be declared.
894 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
896 declspecs_nosc_nots_nosa_noea:
898 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
899 TREE_STATIC ($$) = 1; }
900 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
901 { $$ = tree_cons (NULL_TREE, $2, $1);
902 TREE_STATIC ($$) = 1; }
903 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
904 { $$ = tree_cons (NULL_TREE, $2, $1);
905 TREE_STATIC ($$) = 1; }
908 declspecs_nosc_nots_nosa_ea:
909 declspecs_nosc_nots_nosa_noea attributes
910 { $$ = tree_cons ($2, NULL_TREE, $1);
911 TREE_STATIC ($$) = TREE_STATIC ($1); }
914 declspecs_nosc_nots_sa_noea:
915 declspecs_nosc_nots_sa_noea TYPE_QUAL
916 { $$ = tree_cons (NULL_TREE, $2, $1);
917 TREE_STATIC ($$) = 1; }
918 | declspecs_nosc_nots_sa_ea TYPE_QUAL
919 { $$ = tree_cons (NULL_TREE, $2, $1);
920 TREE_STATIC ($$) = 1; }
923 declspecs_nosc_nots_sa_ea:
925 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
926 TREE_STATIC ($$) = 0; }
927 | declspecs_nosc_nots_sa_noea attributes
928 { $$ = tree_cons ($2, NULL_TREE, $1);
929 TREE_STATIC ($$) = TREE_STATIC ($1); }
932 declspecs_nosc_ts_nosa_noea:
934 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
935 TREE_STATIC ($$) = 1; }
936 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
937 { $$ = tree_cons (NULL_TREE, $2, $1);
938 TREE_STATIC ($$) = 1; }
939 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
940 { $$ = tree_cons (NULL_TREE, $2, $1);
941 TREE_STATIC ($$) = 1; }
942 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
943 { $$ = tree_cons (NULL_TREE, $2, $1);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_nots_nosa_noea typespec_nonattr
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_nots_nosa_ea typespec_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
956 declspecs_nosc_ts_nosa_ea:
958 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
959 TREE_STATIC ($$) = 1; }
960 | declspecs_nosc_ts_nosa_noea attributes
961 { $$ = tree_cons ($2, NULL_TREE, $1);
962 TREE_STATIC ($$) = TREE_STATIC ($1); }
963 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
964 { $$ = tree_cons (NULL_TREE, $2, $1);
965 TREE_STATIC ($$) = 1; }
966 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
967 { $$ = tree_cons (NULL_TREE, $2, $1);
968 TREE_STATIC ($$) = 1; }
969 | declspecs_nosc_nots_nosa_noea typespec_attr
970 { $$ = tree_cons (NULL_TREE, $2, $1);
971 TREE_STATIC ($$) = 1; }
972 | declspecs_nosc_nots_nosa_ea typespec_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
977 declspecs_nosc_ts_sa_noea:
978 declspecs_nosc_ts_sa_noea TYPE_QUAL
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
981 | declspecs_nosc_ts_sa_ea TYPE_QUAL
982 { $$ = tree_cons (NULL_TREE, $2, $1);
983 TREE_STATIC ($$) = 1; }
984 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
985 { $$ = tree_cons (NULL_TREE, $2, $1);
986 TREE_STATIC ($$) = 1; }
987 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_nots_sa_noea typespec_nonattr
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_nots_sa_ea typespec_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
998 declspecs_nosc_ts_sa_ea:
999 declspecs_nosc_ts_sa_noea attributes
1000 { $$ = tree_cons ($2, NULL_TREE, $1);
1001 TREE_STATIC ($$) = TREE_STATIC ($1); }
1002 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1003 { $$ = tree_cons (NULL_TREE, $2, $1);
1004 TREE_STATIC ($$) = 1; }
1005 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1006 { $$ = tree_cons (NULL_TREE, $2, $1);
1007 TREE_STATIC ($$) = 1; }
1008 | declspecs_nosc_nots_sa_noea typespec_attr
1009 { $$ = tree_cons (NULL_TREE, $2, $1);
1010 TREE_STATIC ($$) = 1; }
1011 | declspecs_nosc_nots_sa_ea typespec_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1016 declspecs_sc_nots_nosa_noea:
1018 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1019 TREE_STATIC ($$) = 0; }
1020 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1021 { $$ = tree_cons (NULL_TREE, $2, $1);
1022 TREE_STATIC ($$) = 1; }
1023 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1024 { $$ = tree_cons (NULL_TREE, $2, $1);
1025 TREE_STATIC ($$) = 1; }
1026 | declspecs_nosc_nots_nosa_noea scspec
1027 { if (extra_warnings && TREE_STATIC ($1))
1028 warning ("`%s' is not at beginning of declaration",
1029 IDENTIFIER_POINTER ($2));
1030 $$ = tree_cons (NULL_TREE, $2, $1);
1031 TREE_STATIC ($$) = TREE_STATIC ($1); }
1032 | declspecs_nosc_nots_nosa_ea scspec
1033 { if (extra_warnings && TREE_STATIC ($1))
1034 warning ("`%s' is not at beginning of declaration",
1035 IDENTIFIER_POINTER ($2));
1036 $$ = tree_cons (NULL_TREE, $2, $1);
1037 TREE_STATIC ($$) = TREE_STATIC ($1); }
1038 | declspecs_sc_nots_nosa_noea scspec
1039 { if (extra_warnings && TREE_STATIC ($1))
1040 warning ("`%s' is not at beginning of declaration",
1041 IDENTIFIER_POINTER ($2));
1042 $$ = tree_cons (NULL_TREE, $2, $1);
1043 TREE_STATIC ($$) = TREE_STATIC ($1); }
1044 | declspecs_sc_nots_nosa_ea scspec
1045 { if (extra_warnings && TREE_STATIC ($1))
1046 warning ("`%s' is not at beginning of declaration",
1047 IDENTIFIER_POINTER ($2));
1048 $$ = tree_cons (NULL_TREE, $2, $1);
1049 TREE_STATIC ($$) = TREE_STATIC ($1); }
1052 declspecs_sc_nots_nosa_ea:
1053 declspecs_sc_nots_nosa_noea attributes
1054 { $$ = tree_cons ($2, NULL_TREE, $1);
1055 TREE_STATIC ($$) = TREE_STATIC ($1); }
1058 declspecs_sc_nots_sa_noea:
1059 declspecs_sc_nots_sa_noea TYPE_QUAL
1060 { $$ = tree_cons (NULL_TREE, $2, $1);
1061 TREE_STATIC ($$) = 1; }
1062 | declspecs_sc_nots_sa_ea TYPE_QUAL
1063 { $$ = tree_cons (NULL_TREE, $2, $1);
1064 TREE_STATIC ($$) = 1; }
1065 | declspecs_nosc_nots_sa_noea scspec
1066 { if (extra_warnings && TREE_STATIC ($1))
1067 warning ("`%s' is not at beginning of declaration",
1068 IDENTIFIER_POINTER ($2));
1069 $$ = tree_cons (NULL_TREE, $2, $1);
1070 TREE_STATIC ($$) = TREE_STATIC ($1); }
1071 | declspecs_nosc_nots_sa_ea scspec
1072 { if (extra_warnings && TREE_STATIC ($1))
1073 warning ("`%s' is not at beginning of declaration",
1074 IDENTIFIER_POINTER ($2));
1075 $$ = tree_cons (NULL_TREE, $2, $1);
1076 TREE_STATIC ($$) = TREE_STATIC ($1); }
1077 | declspecs_sc_nots_sa_noea scspec
1078 { if (extra_warnings && TREE_STATIC ($1))
1079 warning ("`%s' is not at beginning of declaration",
1080 IDENTIFIER_POINTER ($2));
1081 $$ = tree_cons (NULL_TREE, $2, $1);
1082 TREE_STATIC ($$) = TREE_STATIC ($1); }
1083 | declspecs_sc_nots_sa_ea scspec
1084 { if (extra_warnings && TREE_STATIC ($1))
1085 warning ("`%s' is not at beginning of declaration",
1086 IDENTIFIER_POINTER ($2));
1087 $$ = tree_cons (NULL_TREE, $2, $1);
1088 TREE_STATIC ($$) = TREE_STATIC ($1); }
1091 declspecs_sc_nots_sa_ea:
1092 declspecs_sc_nots_sa_noea attributes
1093 { $$ = tree_cons ($2, NULL_TREE, $1);
1094 TREE_STATIC ($$) = TREE_STATIC ($1); }
1097 declspecs_sc_ts_nosa_noea:
1098 declspecs_sc_ts_nosa_noea TYPE_QUAL
1099 { $$ = tree_cons (NULL_TREE, $2, $1);
1100 TREE_STATIC ($$) = 1; }
1101 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1102 { $$ = tree_cons (NULL_TREE, $2, $1);
1103 TREE_STATIC ($$) = 1; }
1104 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1105 { $$ = tree_cons (NULL_TREE, $2, $1);
1106 TREE_STATIC ($$) = 1; }
1107 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_nots_nosa_noea typespec_nonattr
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_nots_nosa_ea typespec_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_nosc_ts_nosa_noea scspec
1117 { if (extra_warnings && TREE_STATIC ($1))
1118 warning ("`%s' is not at beginning of declaration",
1119 IDENTIFIER_POINTER ($2));
1120 $$ = tree_cons (NULL_TREE, $2, $1);
1121 TREE_STATIC ($$) = TREE_STATIC ($1); }
1122 | declspecs_nosc_ts_nosa_ea scspec
1123 { if (extra_warnings && TREE_STATIC ($1))
1124 warning ("`%s' is not at beginning of declaration",
1125 IDENTIFIER_POINTER ($2));
1126 $$ = tree_cons (NULL_TREE, $2, $1);
1127 TREE_STATIC ($$) = TREE_STATIC ($1); }
1128 | declspecs_sc_ts_nosa_noea scspec
1129 { if (extra_warnings && TREE_STATIC ($1))
1130 warning ("`%s' is not at beginning of declaration",
1131 IDENTIFIER_POINTER ($2));
1132 $$ = tree_cons (NULL_TREE, $2, $1);
1133 TREE_STATIC ($$) = TREE_STATIC ($1); }
1134 | declspecs_sc_ts_nosa_ea scspec
1135 { if (extra_warnings && TREE_STATIC ($1))
1136 warning ("`%s' is not at beginning of declaration",
1137 IDENTIFIER_POINTER ($2));
1138 $$ = tree_cons (NULL_TREE, $2, $1);
1139 TREE_STATIC ($$) = TREE_STATIC ($1); }
1142 declspecs_sc_ts_nosa_ea:
1143 declspecs_sc_ts_nosa_noea attributes
1144 { $$ = tree_cons ($2, NULL_TREE, $1);
1145 TREE_STATIC ($$) = TREE_STATIC ($1); }
1146 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1147 { $$ = tree_cons (NULL_TREE, $2, $1);
1148 TREE_STATIC ($$) = 1; }
1149 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1150 { $$ = tree_cons (NULL_TREE, $2, $1);
1151 TREE_STATIC ($$) = 1; }
1152 | declspecs_sc_nots_nosa_noea typespec_attr
1153 { $$ = tree_cons (NULL_TREE, $2, $1);
1154 TREE_STATIC ($$) = 1; }
1155 | declspecs_sc_nots_nosa_ea typespec_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1160 declspecs_sc_ts_sa_noea:
1161 declspecs_sc_ts_sa_noea TYPE_QUAL
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1164 | declspecs_sc_ts_sa_ea TYPE_QUAL
1165 { $$ = tree_cons (NULL_TREE, $2, $1);
1166 TREE_STATIC ($$) = 1; }
1167 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1168 { $$ = tree_cons (NULL_TREE, $2, $1);
1169 TREE_STATIC ($$) = 1; }
1170 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_nots_sa_noea typespec_nonattr
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_nots_sa_ea typespec_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_nosc_ts_sa_noea scspec
1180 { if (extra_warnings && TREE_STATIC ($1))
1181 warning ("`%s' is not at beginning of declaration",
1182 IDENTIFIER_POINTER ($2));
1183 $$ = tree_cons (NULL_TREE, $2, $1);
1184 TREE_STATIC ($$) = TREE_STATIC ($1); }
1185 | declspecs_nosc_ts_sa_ea scspec
1186 { if (extra_warnings && TREE_STATIC ($1))
1187 warning ("`%s' is not at beginning of declaration",
1188 IDENTIFIER_POINTER ($2));
1189 $$ = tree_cons (NULL_TREE, $2, $1);
1190 TREE_STATIC ($$) = TREE_STATIC ($1); }
1191 | declspecs_sc_ts_sa_noea scspec
1192 { if (extra_warnings && TREE_STATIC ($1))
1193 warning ("`%s' is not at beginning of declaration",
1194 IDENTIFIER_POINTER ($2));
1195 $$ = tree_cons (NULL_TREE, $2, $1);
1196 TREE_STATIC ($$) = TREE_STATIC ($1); }
1197 | declspecs_sc_ts_sa_ea scspec
1198 { if (extra_warnings && TREE_STATIC ($1))
1199 warning ("`%s' is not at beginning of declaration",
1200 IDENTIFIER_POINTER ($2));
1201 $$ = tree_cons (NULL_TREE, $2, $1);
1202 TREE_STATIC ($$) = TREE_STATIC ($1); }
1205 declspecs_sc_ts_sa_ea:
1206 declspecs_sc_ts_sa_noea attributes
1207 { $$ = tree_cons ($2, NULL_TREE, $1);
1208 TREE_STATIC ($$) = TREE_STATIC ($1); }
1209 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1210 { $$ = tree_cons (NULL_TREE, $2, $1);
1211 TREE_STATIC ($$) = 1; }
1212 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1213 { $$ = tree_cons (NULL_TREE, $2, $1);
1214 TREE_STATIC ($$) = 1; }
1215 | declspecs_sc_nots_sa_noea typespec_attr
1216 { $$ = tree_cons (NULL_TREE, $2, $1);
1217 TREE_STATIC ($$) = 1; }
1218 | declspecs_sc_nots_sa_ea typespec_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1223 /* Particular useful classes of declspecs. */
1225 declspecs_nosc_ts_nosa_noea
1226 | declspecs_nosc_ts_nosa_ea
1227 | declspecs_nosc_ts_sa_noea
1228 | declspecs_nosc_ts_sa_ea
1229 | declspecs_sc_ts_nosa_noea
1230 | declspecs_sc_ts_nosa_ea
1231 | declspecs_sc_ts_sa_noea
1232 | declspecs_sc_ts_sa_ea
1236 declspecs_nosc_nots_nosa_noea
1237 | declspecs_nosc_nots_nosa_ea
1238 | declspecs_nosc_nots_sa_noea
1239 | declspecs_nosc_nots_sa_ea
1240 | declspecs_sc_nots_nosa_noea
1241 | declspecs_sc_nots_nosa_ea
1242 | declspecs_sc_nots_sa_noea
1243 | declspecs_sc_nots_sa_ea
1247 declspecs_nosc_ts_nosa_noea
1248 | declspecs_nosc_ts_nosa_ea
1249 | declspecs_sc_ts_nosa_noea
1250 | declspecs_sc_ts_nosa_ea
1253 declspecs_nots_nosa:
1254 declspecs_nosc_nots_nosa_noea
1255 | declspecs_nosc_nots_nosa_ea
1256 | declspecs_sc_nots_nosa_noea
1257 | declspecs_sc_nots_nosa_ea
1261 declspecs_nosc_ts_nosa_noea
1262 | declspecs_nosc_ts_nosa_ea
1263 | declspecs_nosc_ts_sa_noea
1264 | declspecs_nosc_ts_sa_ea
1267 declspecs_nosc_nots:
1268 declspecs_nosc_nots_nosa_noea
1269 | declspecs_nosc_nots_nosa_ea
1270 | declspecs_nosc_nots_sa_noea
1271 | declspecs_nosc_nots_sa_ea
1275 declspecs_nosc_ts_nosa_noea
1276 | declspecs_nosc_ts_nosa_ea
1277 | declspecs_nosc_ts_sa_noea
1278 | declspecs_nosc_ts_sa_ea
1279 | declspecs_nosc_nots_nosa_noea
1280 | declspecs_nosc_nots_nosa_ea
1281 | declspecs_nosc_nots_sa_noea
1282 | declspecs_nosc_nots_sa_ea
1286 declspecs_nosc_nots_nosa_noea
1287 | declspecs_nosc_nots_nosa_ea
1288 | declspecs_nosc_nots_sa_noea
1289 | declspecs_nosc_nots_sa_ea
1290 | declspecs_nosc_ts_nosa_noea
1291 | declspecs_nosc_ts_nosa_ea
1292 | declspecs_nosc_ts_sa_noea
1293 | declspecs_nosc_ts_sa_ea
1294 | declspecs_sc_nots_nosa_noea
1295 | declspecs_sc_nots_nosa_ea
1296 | declspecs_sc_nots_sa_noea
1297 | declspecs_sc_nots_sa_ea
1298 | declspecs_sc_ts_nosa_noea
1299 | declspecs_sc_ts_nosa_ea
1300 | declspecs_sc_ts_sa_noea
1301 | declspecs_sc_ts_sa_ea
1304 /* A (possibly empty) sequence of type qualifiers and attributes. */
1305 maybe_type_quals_attrs:
1308 | declspecs_nosc_nots
1312 /* A type specifier (but not a type qualifier).
1313 Once we have seen one of these in a declaration,
1314 if a typedef name appears then it is being redeclared.
1316 The _reserved versions start with a reserved word and may appear anywhere
1317 in the declaration specifiers; the _nonreserved versions may only
1318 appear before any other type specifiers, and after that are (if names)
1321 FIXME: should the _nonreserved version be restricted to names being
1322 redeclared only? The other entries there relate only the GNU extensions
1323 and Objective C, and are historically parsed thus, and don't make sense
1324 after other type specifiers, but it might be cleaner to count them as
1327 _attr means: specifiers that either end with attributes,
1328 or are such that any following attributes would
1329 be parsed as part of the specifier.
1331 _nonattr: specifiers. */
1334 typespec_reserved_nonattr
1335 | typespec_nonreserved_nonattr
1339 typespec_reserved_attr
1342 typespec_reserved_nonattr:
1344 { OBJC_NEED_RAW_IDENTIFIER (1); }
1348 typespec_reserved_attr:
1352 typespec_nonreserved_nonattr:
1354 { /* For a typedef name, record the meaning, not the name.
1355 In case of `foo foo, bar;'. */
1356 $$ = lookup_name ($1); }
1358 | CLASSNAME protocolrefs
1359 { $$ = get_static_reference ($1, $2); }
1360 | OBJECTNAME protocolrefs
1361 { $$ = get_protocol_reference ($2); }
1363 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1364 - nisse@lysator.liu.se */
1365 | non_empty_protocolrefs
1366 { $$ = get_protocol_reference ($1); }
1368 | typeof '(' expr ')'
1369 { skip_evaluation--;
1370 if (TREE_CODE ($3.value) == COMPONENT_REF
1371 && DECL_C_BIT_FIELD (TREE_OPERAND ($3.value, 1)))
1372 error ("`typeof' applied to a bit-field");
1373 $$ = TREE_TYPE ($3.value); }
1374 | typeof '(' typename ')'
1375 { skip_evaluation--; $$ = groktypename ($3); }
1378 /* typespec_nonreserved_attr does not exist. */
1382 | initdecls ',' maybe_resetattrs initdcl
1387 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1391 declarator maybeasm maybe_attribute '='
1392 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1393 chainon ($3, all_prefix_attributes));
1394 start_init ($<ttype>$, $2, global_bindings_p ()); }
1396 /* Note how the declaration of the variable is in effect while its init is parsed! */
1398 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1399 finish_decl ($<ttype>5, $6.value, $2); }
1400 | declarator maybeasm maybe_attribute
1401 { tree d = start_decl ($1, current_declspecs, false,
1402 chainon ($3, all_prefix_attributes));
1403 finish_decl (d, NULL_TREE, $2);
1408 notype_declarator maybeasm maybe_attribute '='
1409 { $<ttype>$ = start_decl ($1, current_declspecs, true,
1410 chainon ($3, all_prefix_attributes));
1411 start_init ($<ttype>$, $2, global_bindings_p ()); }
1413 /* Note how the declaration of the variable is in effect while its init is parsed! */
1415 maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6);
1416 finish_decl ($<ttype>5, $6.value, $2); }
1417 | notype_declarator maybeasm maybe_attribute
1418 { tree d = start_decl ($1, current_declspecs, false,
1419 chainon ($3, all_prefix_attributes));
1420 finish_decl (d, NULL_TREE, $2); }
1422 /* the * rules are dummies to accept the Apollo extended syntax
1423 so that the header files compile. */
1434 | attributes attribute
1435 { $$ = chainon ($1, $2); }
1439 ATTRIBUTE stop_string_translation
1440 '(' '(' attribute_list ')' ')' start_string_translation
1442 | ATTRIBUTE error start_string_translation
1449 | attribute_list ',' attrib
1450 { $$ = chainon ($1, $3); }
1457 { $$ = build_tree_list ($1, NULL_TREE); }
1458 | any_word '(' IDENTIFIER ')'
1459 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1460 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1461 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1462 | any_word '(' exprlist ')'
1463 { $$ = build_tree_list ($1, $3); }
1466 /* This still leaves out most reserved keywords,
1467 shouldn't we include them? */
1481 /* Initializers. `init' is the entry point. */
1487 { really_start_incremental_init (NULL_TREE); }
1488 initlist_maybe_comma '}'
1489 { $$ = pop_init_level (0); }
1491 { $$.value = error_mark_node; $$.original_code = ERROR_MARK; }
1494 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1495 initlist_maybe_comma:
1498 pedwarn ("ISO C forbids empty initializer braces"); }
1499 | initlist1 maybecomma
1504 | initlist1 ',' initelt
1507 /* `initelt' is a single element of an initializer.
1508 It may use braces. */
1510 designator_list '=' initval
1511 { if (pedantic && ! flag_isoc99)
1512 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1513 | designator initval
1515 pedwarn ("obsolete use of designated initializer without `='"); }
1517 { set_init_label ($1);
1519 pedwarn ("obsolete use of designated initializer with `:'"); }
1527 { push_init_level (0); }
1528 initlist_maybe_comma '}'
1529 { process_init_element (pop_init_level (0)); }
1531 { process_init_element ($1); }
1537 | designator_list designator
1542 { set_init_label ($2); }
1543 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1544 { set_init_index ($2.value, $4.value);
1546 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1547 | '[' expr_no_commas ']'
1548 { set_init_index ($2.value, NULL_TREE); }
1554 pedwarn ("ISO C forbids nested functions");
1556 push_function_context ();
1557 if (! start_function (current_declspecs, $1,
1558 all_prefix_attributes))
1560 pop_function_context ();
1564 old_style_parm_decls save_location
1565 { tree decl = current_function_decl;
1566 DECL_SOURCE_LOCATION (decl) = $4;
1567 store_parm_decls (); }
1568 /* This used to use compstmt_or_error. That caused a bug with
1569 input `f(g) int g {}', where the use of YYERROR1 above caused
1570 an error which then was handled by compstmt_or_error. There
1571 followed a repeated execution of that same rule, which called
1572 YYERROR1 again, and so on. */
1574 { tree decl = current_function_decl;
1577 pop_function_context ();
1578 add_stmt (build_stmt (DECL_EXPR, decl)); }
1581 notype_nested_function:
1584 pedwarn ("ISO C forbids nested functions");
1586 push_function_context ();
1587 if (! start_function (current_declspecs, $1,
1588 all_prefix_attributes))
1590 pop_function_context ();
1594 old_style_parm_decls save_location
1595 { tree decl = current_function_decl;
1596 DECL_SOURCE_LOCATION (decl) = $4;
1597 store_parm_decls (); }
1598 /* This used to use compstmt_or_error. That caused a bug with
1599 input `f(g) int g {}', where the use of YYERROR1 above caused
1600 an error which then was handled by compstmt_or_error. There
1601 followed a repeated execution of that same rule, which called
1602 YYERROR1 again, and so on. */
1604 { tree decl = current_function_decl;
1607 pop_function_context ();
1608 add_stmt (build_stmt (DECL_EXPR, decl)); }
1611 /* Any kind of declarator (thus, all declarators allowed
1612 after an explicit typespec). */
1615 after_type_declarator
1619 /* A declarator that is allowed only after an explicit typespec. */
1621 after_type_declarator:
1622 '(' maybe_attribute after_type_declarator ')'
1623 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1624 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1625 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1626 | after_type_declarator array_declarator %prec '.'
1627 { $$ = set_array_declarator_type ($2, $1, false); }
1628 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1629 { $$ = make_pointer_declarator ($2, $3); }
1636 /* Kinds of declarator that can appear in a parameter list
1637 in addition to notype_declarator. This is like after_type_declarator
1638 but does not allow a typedef name in parentheses as an identifier
1639 (because it would conflict with a function with that typedef as arg). */
1641 parm_declarator_starttypename
1642 | parm_declarator_nostarttypename
1645 parm_declarator_starttypename:
1646 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1647 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1648 | parm_declarator_starttypename array_declarator %prec '.'
1649 { $$ = set_array_declarator_type ($2, $1, false); }
1656 parm_declarator_nostarttypename:
1657 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 | parm_declarator_nostarttypename array_declarator %prec '.'
1660 { $$ = set_array_declarator_type ($2, $1, false); }
1661 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1662 { $$ = make_pointer_declarator ($2, $3); }
1663 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1664 { $$ = make_pointer_declarator ($2, $3); }
1665 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1666 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1669 /* A declarator allowed whether or not there has been
1670 an explicit typespec. These cannot redeclare a typedef-name. */
1673 notype_declarator '(' parmlist_or_identifiers %prec '.'
1674 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1675 | '(' maybe_attribute notype_declarator ')'
1676 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1677 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1678 { $$ = make_pointer_declarator ($2, $3); }
1679 | notype_declarator array_declarator %prec '.'
1680 { $$ = set_array_declarator_type ($2, $1, false); }
1705 /* structsp_attr: struct/union/enum specifiers that either
1706 end with attributes, or are such that any following attributes would
1707 be parsed as part of the struct/union/enum specifier.
1709 structsp_nonattr: other struct/union/enum specifiers. */
1712 struct_head identifier '{'
1713 { $$ = start_struct (RECORD_TYPE, $2);
1714 /* Start scope of tag before parsing components. */
1716 component_decl_list '}' maybe_attribute
1717 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1718 chainon ($1, $7)); }
1719 | struct_head '{' component_decl_list '}' maybe_attribute
1720 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1721 nreverse ($3), chainon ($1, $5));
1723 | union_head identifier '{'
1724 { $$ = start_struct (UNION_TYPE, $2); }
1725 component_decl_list '}' maybe_attribute
1726 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1727 chainon ($1, $7)); }
1728 | union_head '{' component_decl_list '}' maybe_attribute
1729 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1730 nreverse ($3), chainon ($1, $5));
1732 | enum_head identifier '{'
1733 { $$ = start_enum ($2); }
1734 enumlist maybecomma_warn '}' maybe_attribute
1735 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1736 chainon ($1, $8)); }
1738 { $$ = start_enum (NULL_TREE); }
1739 enumlist maybecomma_warn '}' maybe_attribute
1740 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1741 chainon ($1, $7)); }
1745 struct_head identifier
1746 { $$ = xref_tag (RECORD_TYPE, $2); }
1747 | union_head identifier
1748 { $$ = xref_tag (UNION_TYPE, $2); }
1749 | enum_head identifier
1750 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1751 /* In ISO C, enumerated types can be referred to
1752 only if already defined. */
1753 if (pedantic && !COMPLETE_TYPE_P ($$))
1754 pedwarn ("ISO C forbids forward references to `enum' types"); }
1765 { if (pedantic && ! flag_isoc99)
1766 pedwarn ("comma at end of enumerator list"); }
1769 /* We chain the components in reverse order. They are put in forward
1770 order in structsp_attr.
1772 Note that component_declarator returns single decls, so components
1773 and components_notype can use TREE_CHAIN directly, wheras components
1774 and components_notype return lists (of comma separated decls), so
1775 component_decl_list and component_decl_list2 must use chainon.
1777 The theory behind all this is that there will be more semicolon
1778 separated fields than comma separated fields, and so we'll be
1779 minimizing the number of node traversals required by chainon. */
1781 component_decl_list:
1782 component_decl_list2
1784 | component_decl_list2 component_decl
1785 { $$ = chainon ($2, $1);
1786 pedwarn ("no semicolon at end of struct or union"); }
1789 component_decl_list2: /* empty */
1791 | component_decl_list2 component_decl ';'
1792 { $$ = chainon ($2, $1); }
1793 | component_decl_list2 ';'
1795 pedwarn ("extra semicolon in struct or union specified"); }
1797 /* foo(sizeof(struct{ @defs(ClassName)})); */
1798 | AT_DEFS '(' CLASSNAME ')'
1799 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1804 declspecs_nosc_ts setspecs components
1806 POP_DECLSPEC_STACK; }
1807 | declspecs_nosc_ts setspecs
1809 /* Support for unnamed structs or unions as members of
1810 structs or unions (which is [a] useful and [b] supports
1813 pedwarn ("ISO C doesn't support unnamed structs/unions");
1815 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1816 POP_DECLSPEC_STACK; }
1817 | declspecs_nosc_nots setspecs components_notype
1819 POP_DECLSPEC_STACK; }
1820 | declspecs_nosc_nots
1822 pedwarn ("ISO C forbids member declarations with no members");
1823 shadow_tag_warned ($1, pedantic);
1827 | extension component_decl
1829 RESTORE_EXT_FLAGS ($1); }
1833 component_declarator
1834 | components ',' maybe_resetattrs component_declarator
1835 { TREE_CHAIN ($4) = $1; $$ = $4; }
1839 component_notype_declarator
1840 | components_notype ',' maybe_resetattrs component_notype_declarator
1841 { TREE_CHAIN ($4) = $1; $$ = $4; }
1844 component_declarator:
1845 declarator maybe_attribute
1846 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1847 decl_attributes (&$$,
1848 chainon ($2, all_prefix_attributes), 0); }
1849 | declarator ':' expr_no_commas maybe_attribute
1850 { $$ = grokfield ($1, current_declspecs, $3.value);
1851 decl_attributes (&$$,
1852 chainon ($4, all_prefix_attributes), 0); }
1853 | ':' expr_no_commas maybe_attribute
1854 { $$ = grokfield (NULL_TREE, current_declspecs, $2.value);
1855 decl_attributes (&$$,
1856 chainon ($3, all_prefix_attributes), 0); }
1859 component_notype_declarator:
1860 notype_declarator maybe_attribute
1861 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1862 decl_attributes (&$$,
1863 chainon ($2, all_prefix_attributes), 0); }
1864 | notype_declarator ':' expr_no_commas maybe_attribute
1865 { $$ = grokfield ($1, current_declspecs, $3.value);
1866 decl_attributes (&$$,
1867 chainon ($4, all_prefix_attributes), 0); }
1868 | ':' expr_no_commas maybe_attribute
1869 { $$ = grokfield (NULL_TREE, current_declspecs, $2.value);
1870 decl_attributes (&$$,
1871 chainon ($3, all_prefix_attributes), 0); }
1874 /* We chain the enumerators in reverse order.
1875 They are put in forward order in structsp_attr. */
1879 | enumlist ',' enumerator
1880 { if ($1 == error_mark_node)
1883 TREE_CHAIN ($3) = $1, $$ = $3; }
1885 { $$ = error_mark_node; }
1891 { $$ = build_enumerator ($1, NULL_TREE); }
1892 | identifier '=' expr_no_commas
1893 { $$ = build_enumerator ($1, $3.value); }
1898 { pending_xref_error ();
1901 { $$ = build_tree_list ($<ttype>2, $3); }
1904 absdcl: /* an absolute declarator */
1910 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1912 { $$ = build_tree_list (build_tree_list (current_declspecs,
1914 all_prefix_attributes); }
1916 { $$ = build_tree_list (build_tree_list (current_declspecs,
1918 all_prefix_attributes); }
1919 | absdcl1_noea attributes
1920 { $$ = build_tree_list (build_tree_list (current_declspecs,
1922 chainon ($2, all_prefix_attributes)); }
1925 absdcl1: /* a nonempty absolute declarator */
1932 | '*' maybe_type_quals_attrs absdcl1_noea
1933 { $$ = make_pointer_declarator ($2, $3); }
1937 '*' maybe_type_quals_attrs
1938 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1939 | '*' maybe_type_quals_attrs absdcl1_ea
1940 { $$ = make_pointer_declarator ($2, $3); }
1944 '(' maybe_attribute absdcl1 ')'
1945 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1946 | direct_absdcl1 '(' parmlist
1947 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1948 | direct_absdcl1 array_declarator
1949 { $$ = set_array_declarator_type ($2, $1, true); }
1951 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1953 { $$ = set_array_declarator_type ($1, NULL_TREE, true); }
1956 /* The [...] part of a declarator for an array type. */
1959 '[' maybe_type_quals_attrs expr_no_commas ']'
1960 { $$ = build_array_declarator ($3.value, $2, false, false); }
1961 | '[' maybe_type_quals_attrs ']'
1962 { $$ = build_array_declarator (NULL_TREE, $2, false, false); }
1963 | '[' maybe_type_quals_attrs '*' ']'
1964 { $$ = build_array_declarator (NULL_TREE, $2, false, true); }
1965 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1966 { $$ = build_array_declarator ($4.value, $3, true, false); }
1967 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1968 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1969 { $$ = build_array_declarator ($4.value, $2, true, false); }
1972 /* A nonempty series of declarations and statements (possibly followed by
1973 some labels) that can form the body of a compound statement.
1974 NOTE: we don't allow labels on declarations; this might seem like a
1975 natural extension, but there would be a conflict between attributes
1976 on the label and prefix attributes on the declaration. */
1979 lineno_stmt_decl_or_labels_ending_stmt
1980 | lineno_stmt_decl_or_labels_ending_decl
1981 | lineno_stmt_decl_or_labels_ending_label
1983 error ("label at end of compound statement");
1985 | lineno_stmt_decl_or_labels_ending_error
1988 lineno_stmt_decl_or_labels_ending_stmt:
1990 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1991 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1992 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1993 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
1996 lineno_stmt_decl_or_labels_ending_decl:
1998 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2000 if ((pedantic && !flag_isoc99)
2001 || warn_declaration_after_statement)
2002 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2004 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2005 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2008 lineno_stmt_decl_or_labels_ending_label:
2010 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2011 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2012 | lineno_stmt_decl_or_labels_ending_label lineno_label
2013 | lineno_stmt_decl_or_labels_ending_error lineno_label
2016 lineno_stmt_decl_or_labels_ending_error:
2018 | lineno_stmt_decl_or_labels errstmt
2021 lineno_stmt_decl_or_labels:
2022 lineno_stmt_decl_or_labels_ending_stmt
2023 | lineno_stmt_decl_or_labels_ending_decl
2024 | lineno_stmt_decl_or_labels_ending_label
2025 | lineno_stmt_decl_or_labels_ending_error
2031 /* Start and end blocks created for the new scopes of C99. */
2032 c99_block_start: /* empty */
2033 { $$ = c_begin_compound_stmt (flag_isoc99); }
2036 /* Read zero or more forward-declarations for labels
2037 that nested functions can jump to. */
2042 pedwarn ("ISO C forbids label declarations"); }
2047 | label_decls label_decl
2051 LABEL identifiers_or_typenames ';'
2053 for (link = $2; link; link = TREE_CHAIN (link))
2055 tree label = declare_label (TREE_VALUE (link));
2056 C_DECLARED_LABEL_FLAG (label) = 1;
2057 add_stmt (build_stmt (DECL_EXPR, label));
2062 /* This is the body of a function definition.
2063 It causes syntax errors to ignore to the next openbrace. */
2070 compstmt_start: '{' { $$ = c_begin_compound_stmt (true); }
2073 compstmt_nostart: '}'
2074 | maybe_label_decls compstmt_contents_nonempty '}'
2077 compstmt_contents_nonempty:
2082 compstmt_primary_start:
2084 { if (current_function_decl == 0)
2086 error ("braced-group within expression allowed "
2087 "only inside a function");
2090 $$ = c_begin_stmt_expr ();
2094 compstmt: compstmt_start compstmt_nostart
2095 { $$ = c_end_compound_stmt ($1, true); }
2098 /* The forced readahead in here is because we might be at the end of a
2099 line, and the line and file won't be bumped until yylex absorbs the
2100 first token on the next line. */
2103 { if (yychar == YYEMPTY)
2105 $$ = input_location; }
2110 | lineno_labels lineno_label
2113 /* A labeled statement. In C99 it also generates an implicit block. */
2114 c99_block_lineno_labeled_stmt:
2115 c99_block_start lineno_labels lineno_stmt
2116 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2122 /* Two cases cannot and do not have line numbers associated:
2123 If stmt is degenerate, such as "2;", then stmt is an
2124 INTEGER_CST, which cannot hold line numbers. But that's
2125 ok because the statement will either be changed to a
2126 MODIFY_EXPR during gimplification of the statement expr,
2127 or discarded. If stmt was compound, but without new
2128 variables, we will have skipped the creation of a BIND
2129 and will have a bare STATEMENT_LIST. But that's ok
2130 because (recursively) all of the component statments
2131 should already have line numbers assigned. */
2132 if ($2 && EXPR_P ($2))
2133 SET_EXPR_LOCATION ($2, $1);
2139 { if ($2) SET_EXPR_LOCATION ($2, $1); }
2142 condition: save_location expr
2143 { $$ = lang_hooks.truthvalue_conversion ($2.value);
2145 SET_EXPR_LOCATION ($$, $1); }
2148 /* Implement -Wparenthesis by special casing IF statement directly nested
2149 within IF statement. This requires some amount of duplication of the
2150 productions under c99_block_lineno_labeled_stmt in order to work out.
2151 But it's still likely more maintainable than lots of state outside the
2155 c99_block_start lineno_labels if_statement
2156 { $$ = c_end_compound_stmt ($1, flag_isoc99); }
2160 c99_block_start lineno_labels ';'
2161 { if (extra_warnings)
2162 add_stmt (build (NOP_EXPR, NULL_TREE, NULL_TREE));
2163 $$ = c_end_compound_stmt ($1, flag_isoc99); }
2164 | c99_block_lineno_labeled_stmt
2168 IF c99_block_start save_location '(' condition ')'
2169 if_statement_1 ELSE if_statement_2
2170 { c_finish_if_stmt ($3, $5, $7, $9, true);
2171 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2172 | IF c99_block_start save_location '(' condition ')'
2173 if_statement_2 ELSE if_statement_2
2174 { c_finish_if_stmt ($3, $5, $7, $9, false);
2175 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2176 | IF c99_block_start save_location '(' condition ')'
2177 if_statement_1 %prec IF
2178 { c_finish_if_stmt ($3, $5, $7, NULL, true);
2179 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2180 | IF c99_block_start save_location '(' condition ')'
2181 if_statement_2 %prec IF
2182 { c_finish_if_stmt ($3, $5, $7, NULL, false);
2183 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2186 start_break: /* empty */
2187 { $$ = c_break_label; c_break_label = NULL; }
2190 start_continue: /* empty */
2191 { $$ = c_cont_label; c_cont_label = NULL; }
2195 WHILE c99_block_start save_location '(' condition ')'
2196 start_break start_continue c99_block_lineno_labeled_stmt
2197 { c_finish_loop ($3, $5, NULL, $9, c_break_label,
2198 c_cont_label, true);
2199 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2200 c_break_label = $7; c_cont_label = $8; }
2204 DO c99_block_start save_location start_break start_continue
2205 c99_block_lineno_labeled_stmt WHILE
2206 { $<ttype>$ = c_break_label; c_break_label = $4; }
2207 { $<ttype>$ = c_cont_label; c_cont_label = $5; }
2208 '(' condition ')' ';'
2209 { c_finish_loop ($3, $11, NULL, $6, $<ttype>8,
2211 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2223 { c_finish_expr_stmt ($1); }
2225 { check_for_loop_decls (); }
2228 for_cond_expr: save_location xexpr
2231 $$ = lang_hooks.truthvalue_conversion ($2);
2233 SET_EXPR_LOCATION ($$, $1);
2240 for_incr_expr: xexpr
2241 { $$ = c_process_expr_stmt ($1); }
2245 FOR c99_block_start '(' for_init_stmt
2246 save_location for_cond_expr ';' for_incr_expr ')'
2247 start_break start_continue c99_block_lineno_labeled_stmt
2248 { c_finish_loop ($5, $6, $8, $12, c_break_label,
2249 c_cont_label, true);
2250 add_stmt (c_end_compound_stmt ($2, flag_isoc99));
2251 c_break_label = $10; c_cont_label = $11; }
2255 SWITCH c99_block_start '(' expr ')'
2256 { $<ttype>$ = c_start_case ($4.value); }
2257 start_break c99_block_lineno_labeled_stmt
2258 { c_finish_case ($8);
2260 add_stmt (build (LABEL_EXPR, void_type_node,
2263 add_stmt (c_end_compound_stmt ($2, flag_isoc99)); }
2266 /* Parse a single real statement, not including any labels or compounds. */
2269 { $$ = c_finish_expr_stmt ($1.value); }
2281 { $$ = c_finish_bc_stmt (&c_break_label, true); }
2283 { $$ = c_finish_bc_stmt (&c_cont_label, false); }
2285 { $$ = c_finish_return (NULL_TREE); }
2287 { $$ = c_finish_return ($2.value); }
2289 | GOTO identifier ';'
2290 { $$ = c_finish_goto_label ($2); }
2292 { $$ = c_finish_goto_ptr ($3.value); }
2297 { $$ = objc_build_throw_stmt ($2.value); }
2299 { $$ = objc_build_throw_stmt (NULL_TREE); }
2300 | objc_try_catch_stmt
2302 | AT_SYNCHRONIZED save_location '(' expr ')' compstmt
2303 { objc_build_synchronized ($2, $4.value, $6); $$ = NULL_TREE; }
2307 AT_CATCH '(' parm ')'
2308 { objc_begin_catch_clause ($3); }
2312 objc_catch_prefix '{' compstmt_nostart
2313 { objc_finish_catch_clause (); }
2314 | objc_catch_prefix '{' error '}'
2315 { objc_finish_catch_clause (); }
2318 objc_opt_catch_list:
2320 | objc_opt_catch_list objc_catch_clause
2323 objc_try_catch_clause:
2324 AT_TRY save_location compstmt
2325 { objc_begin_try_stmt ($2, $3); }
2329 objc_finally_clause:
2330 AT_FINALLY save_location compstmt
2331 { objc_build_finally_clause ($2, $3); }
2334 objc_try_catch_stmt:
2335 objc_try_catch_clause
2336 { objc_finish_try_stmt (); }
2337 | objc_try_catch_clause objc_finally_clause
2338 { objc_finish_try_stmt (); }
2342 /* Parse a single or compound real statement, not including any labels. */
2345 { add_stmt ($1); $$ = NULL_TREE; }
2349 /* Any kind of label, including jump labels and case labels.
2350 ANSI C accepts labels only before statements, but we allow them
2351 also at the end of a compound statement. */
2353 label: CASE expr_no_commas ':'
2354 { $$ = do_case ($2.value, NULL_TREE); }
2355 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2356 { $$ = do_case ($2.value, $4.value); }
2358 { $$ = do_case (NULL_TREE, NULL_TREE); }
2359 | identifier save_location ':' maybe_attribute
2360 { tree label = define_label ($2, $1);
2363 decl_attributes (&label, $4, 0);
2364 $$ = add_stmt (build_stmt (LABEL_EXPR, label));
2371 /* Asm expressions and statements */
2373 /* simple_asm_expr is used in restricted contexts, where a full
2374 expression with inputs and outputs does not make sense. */
2376 ASM_KEYWORD stop_string_translation
2377 '(' STRING ')' start_string_translation
2381 /* maybeasm: used for assembly names for declarations */
2388 /* asmdef: asm() outside a function body. */
2391 { assemble_asm ($1); }
2392 | ASM_KEYWORD error start_string_translation ';'
2396 /* Full-blown asm statement with inputs, outputs, clobbers, and
2397 volatile tag allowed. */
2399 ASM_KEYWORD maybe_volatile stop_string_translation
2400 '(' asm_argument ')' start_string_translation ';'
2401 { $$ = build_asm_stmt ($2, $5); }
2407 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2408 /* output operands */
2409 | STRING ':' asm_operands
2410 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2411 /* output and input operands */
2412 | STRING ':' asm_operands ':' asm_operands
2413 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2414 /* output and input operands and clobbers */
2415 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2416 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2419 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2425 { if ($1 != ridpointers[RID_VOLATILE])
2427 warning ("%E qualifier ignored on asm", $1);
2435 /* These are the operands other than the first string and colon
2436 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2437 asm_operands: /* empty */
2439 | nonnull_asm_operands
2442 nonnull_asm_operands:
2444 | nonnull_asm_operands ',' asm_operand
2445 { $$ = chainon ($1, $3); }
2449 STRING start_string_translation '(' expr ')' stop_string_translation
2450 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1),
2452 | '[' identifier ']' STRING start_string_translation
2453 '(' expr ')' stop_string_translation
2454 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2455 IDENTIFIER_POINTER ($2));
2456 $$ = build_tree_list (build_tree_list ($2, $4), $7.value); }
2461 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2462 | asm_clobbers ',' STRING
2463 { $$ = tree_cons (NULL_TREE, $3, $1); }
2466 stop_string_translation:
2467 { c_lex_string_translate = 0; }
2470 start_string_translation:
2471 { c_lex_string_translate = 1; }
2475 /* This is what appears inside the parens in a function declarator.
2476 Its value is a list of ..._TYPE nodes. Attributes must appear here
2477 to avoid a conflict with their appearance after an open parenthesis
2478 in an abstract declarator, as in
2479 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2483 declare_parm_level (); }
2492 { mark_forward_parm_decls (); }
2494 { /* Dummy action so attributes are in known place
2495 on parser stack. */ }
2499 { $$ = make_node (TREE_LIST); }
2502 /* This is what appears inside the parens in a function declarator.
2503 Is value is represented in the format that grokdeclarator expects. */
2504 parmlist_2: /* empty */
2505 { $$ = make_node (TREE_LIST); }
2507 { $$ = make_node (TREE_LIST);
2508 /* Suppress -Wold-style-definition for this case. */
2509 TREE_CHAIN ($$) = error_mark_node;
2510 error ("ISO C requires a named argument before `...'");
2513 { $$ = get_parm_info (/*ellipsis=*/false); }
2514 | parms ',' ELLIPSIS
2515 { $$ = get_parm_info (/*ellipsis=*/true); }
2520 { push_parm_decl ($1); }
2522 { push_parm_decl ($3); }
2525 /* A single parameter declaration or parameter type name,
2526 as found in a parmlist. */
2528 declspecs_ts setspecs parm_declarator maybe_attribute
2529 { $$ = build_tree_list (build_tree_list (current_declspecs,
2531 chainon ($4, all_prefix_attributes));
2532 POP_DECLSPEC_STACK; }
2533 | declspecs_ts setspecs notype_declarator maybe_attribute
2534 { $$ = build_tree_list (build_tree_list (current_declspecs,
2536 chainon ($4, all_prefix_attributes));
2537 POP_DECLSPEC_STACK; }
2538 | declspecs_ts setspecs absdcl_maybe_attribute
2540 POP_DECLSPEC_STACK; }
2541 | declspecs_nots setspecs notype_declarator maybe_attribute
2542 { $$ = build_tree_list (build_tree_list (current_declspecs,
2544 chainon ($4, all_prefix_attributes));
2545 POP_DECLSPEC_STACK; }
2547 | declspecs_nots setspecs absdcl_maybe_attribute
2549 POP_DECLSPEC_STACK; }
2552 /* The first parm, which must suck attributes from off the top of the parser
2555 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2556 { $$ = build_tree_list (build_tree_list (current_declspecs,
2558 chainon ($4, all_prefix_attributes));
2559 POP_DECLSPEC_STACK; }
2560 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2561 { $$ = build_tree_list (build_tree_list (current_declspecs,
2563 chainon ($4, all_prefix_attributes));
2564 POP_DECLSPEC_STACK; }
2565 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2567 POP_DECLSPEC_STACK; }
2568 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2569 { $$ = build_tree_list (build_tree_list (current_declspecs,
2571 chainon ($4, all_prefix_attributes));
2572 POP_DECLSPEC_STACK; }
2574 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2576 POP_DECLSPEC_STACK; }
2581 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2582 all_prefix_attributes = prefix_attributes; }
2585 /* This is used in a function definition
2586 where either a parmlist or an identifier list is ok.
2587 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2588 parmlist_or_identifiers:
2591 declare_parm_level (); }
2592 parmlist_or_identifiers_1
2597 parmlist_or_identifiers_1:
2601 for (t = $1; t; t = TREE_CHAIN (t))
2602 if (TREE_VALUE (t) == NULL_TREE)
2603 error ("`...' in old-style identifier list");
2604 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2606 /* Make sure we have a parmlist after attributes. */
2608 && (TREE_CODE ($$) != TREE_LIST
2609 || TREE_PURPOSE ($$) == 0
2610 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2615 /* A nonempty list of identifiers. */
2618 { $$ = build_tree_list (NULL_TREE, $1); }
2619 | identifiers ',' IDENTIFIER
2620 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2623 /* A nonempty list of identifiers, including typenames. */
2624 identifiers_or_typenames:
2626 { $$ = build_tree_list (NULL_TREE, $1); }
2627 | identifiers_or_typenames ',' identifier
2628 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2633 { $$ = SAVE_EXT_FLAGS();
2635 warn_pointer_arith = 0;
2636 warn_traditional = 0;
2641 /* Objective-C productions. */
2651 if (objc_implementation_context)
2653 finish_class (objc_implementation_context);
2654 objc_ivar_chain = NULL_TREE;
2655 objc_implementation_context = NULL_TREE;
2658 warning ("`@end' must appear in an implementation context");
2662 /* A nonempty list of identifiers. */
2665 { $$ = build_tree_list (NULL_TREE, $1); }
2666 | identifier_list ',' identifier
2667 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2671 AT_CLASS identifier_list ';'
2673 objc_declare_class ($2);
2678 AT_ALIAS identifier identifier ';'
2680 objc_declare_alias ($2, $3);
2685 ':' identifier { $$ = $2; }
2686 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2690 '{' ivar_decl_list '}'
2695 AT_INTERFACE identifier superclass protocolrefs
2697 objc_interface_context = objc_ivar_context
2698 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2699 objc_public_flag = 0;
2703 continue_class (objc_interface_context);
2705 methodprotolist AT_END
2707 finish_class (objc_interface_context);
2708 objc_interface_context = NULL_TREE;
2711 | AT_IMPLEMENTATION identifier superclass
2713 objc_implementation_context = objc_ivar_context
2714 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2715 objc_public_flag = 0;
2720 = continue_class (objc_implementation_context);
2723 | AT_INTERFACE identifier '(' identifier ')' protocolrefs
2725 objc_interface_context
2726 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2727 continue_class (objc_interface_context);
2729 methodprotolist AT_END
2731 finish_class (objc_interface_context);
2732 objc_interface_context = NULL_TREE;
2735 | AT_IMPLEMENTATION identifier '(' identifier ')'
2737 objc_implementation_context
2738 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2740 = continue_class (objc_implementation_context);
2745 AT_PROTOCOL identifier protocolrefs
2747 objc_pq_context = 1;
2748 objc_interface_context
2749 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2751 methodprotolist AT_END
2753 objc_pq_context = 0;
2754 finish_protocol(objc_interface_context);
2755 objc_interface_context = NULL_TREE;
2757 /* The @protocol forward-declaration production introduces a
2758 reduce/reduce conflict on ';', which should be resolved in
2759 favor of the production 'identifier_list -> identifier'. */
2760 | AT_PROTOCOL identifier_list ';'
2762 objc_declare_protocols ($2);
2771 | non_empty_protocolrefs
2774 non_empty_protocolrefs:
2775 ARITHCOMPARE identifier_list ARITHCOMPARE
2777 if ($1 == LT_EXPR && $3 == GT_EXPR)
2785 ivar_decl_list visibility_spec ivar_decls
2790 AT_PRIVATE { objc_public_flag = 2; }
2791 | AT_PROTECTED { objc_public_flag = 0; }
2792 | AT_PUBLIC { objc_public_flag = 1; }
2800 | ivar_decls ivar_decl ';'
2804 pedwarn ("extra semicolon in struct or union specified");
2809 /* There is a shift-reduce conflict here, because `components' may
2810 start with a `typename'. It happens that shifting (the default resolution)
2811 does the right thing, because it treats the `typename' as part of
2812 a `typed_typespecs'.
2814 It is possible that this same technique would allow the distinction
2815 between `notype_initdecls' and `initdecls' to be eliminated.
2816 But I am being cautious and not trying it. */
2819 declspecs_nosc_ts setspecs ivars
2821 POP_DECLSPEC_STACK; }
2822 | declspecs_nosc_nots setspecs ivars
2824 POP_DECLSPEC_STACK; }
2833 | ivars ',' maybe_resetattrs ivar_declarator
2839 $$ = add_instance_variable (objc_ivar_context,
2841 $1, current_declspecs,
2844 | declarator ':' expr_no_commas
2846 $$ = add_instance_variable (objc_ivar_context,
2848 $1, current_declspecs, $3.value);
2850 | ':' expr_no_commas
2852 $$ = add_instance_variable (objc_ivar_context,
2855 current_declspecs, $2.value);
2861 { objc_inherit_code = CLASS_METHOD_DECL; }
2863 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2869 objc_pq_context = 1;
2870 if (!objc_implementation_context)
2871 fatal_error ("method definition not in class context");
2875 objc_pq_context = 0;
2876 objc_add_method (objc_implementation_context,
2878 objc_inherit_code == CLASS_METHOD_DECL);
2879 start_method_def ($3);
2883 continue_method_def ();
2887 finish_method_def ();
2891 /* the reason for the strange actions in this rule
2892 is so that notype_initdecls when reached via datadef
2893 can find a valid list of type and sc specs in $0. */
2897 | methodprotolist methodproto
2898 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2909 /* Remember protocol qualifiers in prototypes. */
2910 objc_pq_context = 1;
2914 /* Forget protocol qualifiers here. */
2915 objc_pq_context = 0;
2916 objc_add_method (objc_interface_context,
2918 objc_inherit_code == CLASS_METHOD_DECL);
2924 '(' typename ')' unaryselector
2926 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2931 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2934 | '(' typename ')' keywordselector optparmlist
2936 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2939 | keywordselector optparmlist
2941 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2945 /* "optarglist" assumes that start_method_def has already been called...
2946 if it is not, the "xdecls" will not be placed in the proper scope */
2953 /* to get around the following situation: "int foo (int a) int b; {}" that
2954 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
2969 declspecs_ts setspecs myparms ';'
2970 { POP_DECLSPEC_STACK; }
2972 { shadow_tag ($1); }
2973 | declspecs_nots ';'
2974 { pedwarn ("empty declaration"); }
2979 { push_parm_decl ($1); }
2980 | myparms ',' myparm
2981 { push_parm_decl ($3); }
2984 /* A single parameter declaration or parameter type name,
2985 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
2988 parm_declarator maybe_attribute
2989 { $$ = build_tree_list (build_tree_list (current_declspecs,
2991 chainon ($2, all_prefix_attributes)); }
2992 | notype_declarator maybe_attribute
2993 { $$ = build_tree_list (build_tree_list (current_declspecs,
2995 chainon ($2, all_prefix_attributes)); }
2996 | absdcl_maybe_attribute
3007 /* oh what a kludge! */
3008 $$ = objc_ellipsis_node;
3016 /* returns a tree list node generated by get_parm_info */
3029 | keywordselector keyworddecl
3031 $$ = chainon ($1, $2);
3044 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3045 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3046 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3047 | TYPESPEC | TYPE_QUAL
3051 selector ':' '(' typename ')' identifier
3053 $$ = build_keyword_decl ($1, $4, $6);
3056 | selector ':' identifier
3058 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3061 | ':' '(' typename ')' identifier
3063 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3068 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3079 | keywordarglist keywordarg
3081 $$ = chainon ($1, $2);
3089 if (TREE_CHAIN ($1) == NULL_TREE)
3090 /* just return the expr., remove a level of indirection */
3091 $$ = TREE_VALUE ($1);
3093 /* we have a comma expr., we will collapse later */
3099 selector ':' keywordexpr
3101 $$ = build_tree_list ($1, $3);
3105 $$ = build_tree_list (NULL_TREE, $2);
3114 $$ = get_class_reference ($1);
3118 $$ = get_class_reference ($1);
3123 '[' receiver messageargs ']'
3124 { $$ = build_tree_list ($2, $3); }
3134 | keywordnamelist keywordname
3136 $$ = chainon ($1, $2);
3143 $$ = build_tree_list ($1, NULL_TREE);
3147 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3152 AT_SELECTOR '(' selectorarg ')'
3159 AT_PROTOCOL '(' identifier ')'
3165 /* extension to support C-structures in the archiver */
3168 AT_ENCODE '(' typename ')'
3170 $$ = groktypename ($3);
3177 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3178 cpplib.h's token codes into yacc's token codes. */
3180 static enum cpp_ttype last_token;
3182 /* The reserved keyword table. */
3186 ENUM_BITFIELD(rid) rid : 16;
3187 unsigned int disable : 16;
3190 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3192 #define D_C89 0x01 /* not in C89 */
3193 #define D_EXT 0x02 /* GCC extension */
3194 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3195 #define D_OBJC 0x08 /* Objective C only */
3197 static const struct resword reswords[] =
3199 { "_Bool", RID_BOOL, 0 },
3200 { "_Complex", RID_COMPLEX, 0 },
3201 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3202 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3203 { "__alignof", RID_ALIGNOF, 0 },
3204 { "__alignof__", RID_ALIGNOF, 0 },
3205 { "__asm", RID_ASM, 0 },
3206 { "__asm__", RID_ASM, 0 },
3207 { "__attribute", RID_ATTRIBUTE, 0 },
3208 { "__attribute__", RID_ATTRIBUTE, 0 },
3209 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3210 { "__builtin_offsetof", RID_OFFSETOF, 0 },
3211 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3212 { "__builtin_va_arg", RID_VA_ARG, 0 },
3213 { "__complex", RID_COMPLEX, 0 },
3214 { "__complex__", RID_COMPLEX, 0 },
3215 { "__const", RID_CONST, 0 },
3216 { "__const__", RID_CONST, 0 },
3217 { "__extension__", RID_EXTENSION, 0 },
3218 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3219 { "__imag", RID_IMAGPART, 0 },
3220 { "__imag__", RID_IMAGPART, 0 },
3221 { "__inline", RID_INLINE, 0 },
3222 { "__inline__", RID_INLINE, 0 },
3223 { "__label__", RID_LABEL, 0 },
3224 { "__ptrbase", RID_PTRBASE, 0 },
3225 { "__ptrbase__", RID_PTRBASE, 0 },
3226 { "__ptrextent", RID_PTREXTENT, 0 },
3227 { "__ptrextent__", RID_PTREXTENT, 0 },
3228 { "__ptrvalue", RID_PTRVALUE, 0 },
3229 { "__ptrvalue__", RID_PTRVALUE, 0 },
3230 { "__real", RID_REALPART, 0 },
3231 { "__real__", RID_REALPART, 0 },
3232 { "__restrict", RID_RESTRICT, 0 },
3233 { "__restrict__", RID_RESTRICT, 0 },
3234 { "__signed", RID_SIGNED, 0 },
3235 { "__signed__", RID_SIGNED, 0 },
3236 { "__thread", RID_THREAD, 0 },
3237 { "__typeof", RID_TYPEOF, 0 },
3238 { "__typeof__", RID_TYPEOF, 0 },
3239 { "__volatile", RID_VOLATILE, 0 },
3240 { "__volatile__", RID_VOLATILE, 0 },
3241 { "asm", RID_ASM, D_EXT },
3242 { "auto", RID_AUTO, 0 },
3243 { "break", RID_BREAK, 0 },
3244 { "case", RID_CASE, 0 },
3245 { "char", RID_CHAR, 0 },
3246 { "const", RID_CONST, 0 },
3247 { "continue", RID_CONTINUE, 0 },
3248 { "default", RID_DEFAULT, 0 },
3249 { "do", RID_DO, 0 },
3250 { "double", RID_DOUBLE, 0 },
3251 { "else", RID_ELSE, 0 },
3252 { "enum", RID_ENUM, 0 },
3253 { "extern", RID_EXTERN, 0 },
3254 { "float", RID_FLOAT, 0 },
3255 { "for", RID_FOR, 0 },
3256 { "goto", RID_GOTO, 0 },
3257 { "if", RID_IF, 0 },
3258 { "inline", RID_INLINE, D_EXT89 },
3259 { "int", RID_INT, 0 },
3260 { "long", RID_LONG, 0 },
3261 { "register", RID_REGISTER, 0 },
3262 { "restrict", RID_RESTRICT, D_C89 },
3263 { "return", RID_RETURN, 0 },
3264 { "short", RID_SHORT, 0 },
3265 { "signed", RID_SIGNED, 0 },
3266 { "sizeof", RID_SIZEOF, 0 },
3267 { "static", RID_STATIC, 0 },
3268 { "struct", RID_STRUCT, 0 },
3269 { "switch", RID_SWITCH, 0 },
3270 { "typedef", RID_TYPEDEF, 0 },
3271 { "typeof", RID_TYPEOF, D_EXT },
3272 { "union", RID_UNION, 0 },
3273 { "unsigned", RID_UNSIGNED, 0 },
3274 { "void", RID_VOID, 0 },
3275 { "volatile", RID_VOLATILE, 0 },
3276 { "while", RID_WHILE, 0 },
3278 { "id", RID_ID, D_OBJC },
3280 /* These objc keywords are recognized only immediately after
3282 { "class", RID_AT_CLASS, D_OBJC },
3283 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3284 { "defs", RID_AT_DEFS, D_OBJC },
3285 { "encode", RID_AT_ENCODE, D_OBJC },
3286 { "end", RID_AT_END, D_OBJC },
3287 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3288 { "interface", RID_AT_INTERFACE, D_OBJC },
3289 { "private", RID_AT_PRIVATE, D_OBJC },
3290 { "protected", RID_AT_PROTECTED, D_OBJC },
3291 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3292 { "public", RID_AT_PUBLIC, D_OBJC },
3293 { "selector", RID_AT_SELECTOR, D_OBJC },
3294 { "throw", RID_AT_THROW, D_OBJC },
3295 { "try", RID_AT_TRY, D_OBJC },
3296 { "catch", RID_AT_CATCH, D_OBJC },
3297 { "finally", RID_AT_FINALLY, D_OBJC },
3298 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3299 /* These are recognized only in protocol-qualifier context
3301 { "bycopy", RID_BYCOPY, D_OBJC },
3302 { "byref", RID_BYREF, D_OBJC },
3303 { "in", RID_IN, D_OBJC },
3304 { "inout", RID_INOUT, D_OBJC },
3305 { "oneway", RID_ONEWAY, D_OBJC },
3306 { "out", RID_OUT, D_OBJC },
3309 #define N_reswords (sizeof reswords / sizeof (struct resword))
3311 /* Table mapping from RID_* constants to yacc token numbers.
3312 Unfortunately we have to have entries for all the keywords in all
3314 static const short rid_to_yy[RID_MAX] =
3316 /* RID_STATIC */ STATIC,
3317 /* RID_UNSIGNED */ TYPESPEC,
3318 /* RID_LONG */ TYPESPEC,
3319 /* RID_CONST */ TYPE_QUAL,
3320 /* RID_EXTERN */ SCSPEC,
3321 /* RID_REGISTER */ SCSPEC,
3322 /* RID_TYPEDEF */ SCSPEC,
3323 /* RID_SHORT */ TYPESPEC,
3324 /* RID_INLINE */ SCSPEC,
3325 /* RID_VOLATILE */ TYPE_QUAL,
3326 /* RID_SIGNED */ TYPESPEC,
3327 /* RID_AUTO */ SCSPEC,
3328 /* RID_RESTRICT */ TYPE_QUAL,
3331 /* RID_COMPLEX */ TYPESPEC,
3332 /* RID_THREAD */ SCSPEC,
3336 /* RID_VIRTUAL */ 0,
3337 /* RID_EXPLICIT */ 0,
3339 /* RID_MUTABLE */ 0,
3342 /* RID_IN */ TYPE_QUAL,
3343 /* RID_OUT */ TYPE_QUAL,
3344 /* RID_INOUT */ TYPE_QUAL,
3345 /* RID_BYCOPY */ TYPE_QUAL,
3346 /* RID_BYREF */ TYPE_QUAL,
3347 /* RID_ONEWAY */ TYPE_QUAL,
3350 /* RID_INT */ TYPESPEC,
3351 /* RID_CHAR */ TYPESPEC,
3352 /* RID_FLOAT */ TYPESPEC,
3353 /* RID_DOUBLE */ TYPESPEC,
3354 /* RID_VOID */ TYPESPEC,
3355 /* RID_ENUM */ ENUM,
3356 /* RID_STRUCT */ STRUCT,
3357 /* RID_UNION */ UNION,
3359 /* RID_ELSE */ ELSE,
3360 /* RID_WHILE */ WHILE,
3363 /* RID_SWITCH */ SWITCH,
3364 /* RID_CASE */ CASE,
3365 /* RID_DEFAULT */ DEFAULT,
3366 /* RID_BREAK */ BREAK,
3367 /* RID_CONTINUE */ CONTINUE,
3368 /* RID_RETURN */ RETURN,
3369 /* RID_GOTO */ GOTO,
3370 /* RID_SIZEOF */ SIZEOF,
3373 /* RID_ASM */ ASM_KEYWORD,
3374 /* RID_TYPEOF */ TYPEOF,
3375 /* RID_ALIGNOF */ ALIGNOF,
3376 /* RID_ATTRIBUTE */ ATTRIBUTE,
3377 /* RID_VA_ARG */ VA_ARG,
3378 /* RID_EXTENSION */ EXTENSION,
3379 /* RID_IMAGPART */ IMAGPART,
3380 /* RID_REALPART */ REALPART,
3381 /* RID_LABEL */ LABEL,
3382 /* RID_PTRBASE */ PTR_BASE,
3383 /* RID_PTREXTENT */ PTR_EXTENT,
3384 /* RID_PTRVALUE */ PTR_VALUE,
3386 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3387 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3389 /* RID_FUNCTION_NAME */ FUNC_NAME,
3390 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3391 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3394 /* RID_BOOL */ TYPESPEC,
3398 /* RID_PRIVATE */ 0,
3399 /* RID_PROTECTED */ 0,
3400 /* RID_TEMPLATE */ 0,
3405 /* RID_NAMESPACE */ 0,
3407 /* RID_OFFSETOF */ OFFSETOF,
3408 /* RID_OPERATOR */ 0,
3413 /* RID_TYPENAME */ 0,
3418 /* RID_CONSTCAST */ 0,
3419 /* RID_DYNCAST */ 0,
3420 /* RID_REINTCAST */ 0,
3421 /* RID_STATCAST */ 0,
3424 /* RID_ID */ OBJECTNAME,
3425 /* RID_AT_ENCODE */ AT_ENCODE,
3426 /* RID_AT_END */ AT_END,
3427 /* RID_AT_CLASS */ AT_CLASS,
3428 /* RID_AT_ALIAS */ AT_ALIAS,
3429 /* RID_AT_DEFS */ AT_DEFS,
3430 /* RID_AT_PRIVATE */ AT_PRIVATE,
3431 /* RID_AT_PROTECTED */ AT_PROTECTED,
3432 /* RID_AT_PUBLIC */ AT_PUBLIC,
3433 /* RID_AT_PROTOCOL */ AT_PROTOCOL,
3434 /* RID_AT_SELECTOR */ AT_SELECTOR,
3435 /* RID_AT_THROW */ AT_THROW,
3436 /* RID_AT_TRY */ AT_TRY,
3437 /* RID_AT_CATCH */ AT_CATCH,
3438 /* RID_AT_FINALLY */ AT_FINALLY,
3439 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3440 /* RID_AT_INTERFACE */ AT_INTERFACE,
3441 /* RID_AT_IMPLEMENTATION */ AT_IMPLEMENTATION
3445 init_reswords (void)
3449 int mask = (flag_isoc99 ? 0 : D_C89)
3450 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3452 if (!c_dialect_objc ())
3455 ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
3456 for (i = 0; i < N_reswords; i++)
3458 /* If a keyword is disabled, do not enter it into the table
3459 and so create a canonical spelling that isn't a keyword. */
3460 if (reswords[i].disable & mask)
3463 id = get_identifier (reswords[i].word);
3464 C_RID_CODE (id) = reswords[i].rid;
3465 C_IS_RESERVED_WORD (id) = 1;
3466 ridpointers [(int) reswords[i].rid] = id;
3470 #define NAME(type) cpp_type2name (type)
3473 yyerror (const char *msgid)
3475 c_parse_error (msgid, last_token, yylval.ttype);
3484 int objc_force_identifier = objc_need_raw_identifier;
3485 OBJC_NEED_RAW_IDENTIFIER (0);
3488 if (C_IS_RESERVED_WORD (yylval.ttype))
3490 enum rid rid_code = C_RID_CODE (yylval.ttype);
3493 /* Turn non-typedefed refs to "id" into plain identifiers; this
3494 allows constructs like "void foo(id id);" to work. */
3495 if (rid_code == RID_ID)
3497 decl = lookup_name (yylval.ttype);
3498 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3502 if (!OBJC_IS_AT_KEYWORD (rid_code)
3503 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3506 /* Return the canonical spelling for this keyword. */
3507 yylval.ttype = ridpointers[(int) rid_code];
3508 return rid_to_yy[(int) rid_code];
3512 decl = lookup_name (yylval.ttype);
3515 if (TREE_CODE (decl) == TYPE_DECL)
3521 tree objc_interface_decl = is_class_name (yylval.ttype);
3522 /* ObjC class names are in the same namespace as variables and
3523 typedefs, and hence are shadowed by local declarations. */
3524 if (objc_interface_decl
3525 && (global_bindings_p ()
3526 || (!objc_force_identifier && !decl)))
3528 yylval.ttype = objc_interface_decl;
3541 last_token = c_lex (&yylval.ttype);
3544 case CPP_EQ: return '=';
3545 case CPP_NOT: return '!';
3546 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3547 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3548 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3549 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3550 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3551 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3552 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3553 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3554 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3555 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3556 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3557 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3559 case CPP_COMPL: return '~';
3560 case CPP_AND_AND: return ANDAND;
3561 case CPP_OR_OR: return OROR;
3562 case CPP_QUERY: return '?';
3563 case CPP_OPEN_PAREN: return '(';
3564 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3565 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3566 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3567 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3569 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3570 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3571 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3572 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3573 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3574 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3575 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3576 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3577 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3578 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3580 case CPP_OPEN_SQUARE: return '[';
3581 case CPP_CLOSE_SQUARE: return ']';
3582 case CPP_OPEN_BRACE: return '{';
3583 case CPP_CLOSE_BRACE: return '}';
3584 case CPP_ELLIPSIS: return ELLIPSIS;
3586 case CPP_PLUS_PLUS: return PLUSPLUS;
3587 case CPP_MINUS_MINUS: return MINUSMINUS;
3588 case CPP_DEREF: return POINTSAT;
3589 case CPP_DOT: return '.';
3591 /* The following tokens may affect the interpretation of any
3592 identifiers following, if doing Objective-C. */
3593 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3594 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3595 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3596 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3602 return yylexname ();
3605 /* This only happens in Objective-C; it must be a keyword. */
3606 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3617 case CPP_OBJC_STRING:
3620 /* These tokens are C++ specific (and will not be generated
3621 in C mode, but let's be cautious). */
3623 case CPP_DEREF_STAR:
3629 /* These tokens should not survive translation phase 4. */
3632 error ("syntax error at '%s' token", NAME(last_token));
3645 timevar_push (TV_LEX);
3647 timevar_pop (TV_LEX);
3651 /* Function used when yydebug is set, to print a token in more detail. */
3654 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3658 fprintf (file, " [%s]", NAME(last_token));
3669 if (IDENTIFIER_POINTER (t))
3670 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3674 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3675 if (TREE_CODE (t) == INTEGER_CST)
3678 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3679 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3685 /* This is not the ideal place to put this, but we have to get it out
3686 of c-lex.c because cp/lex.c has its own version. */
3688 /* Parse the file. */
3696 free (malloced_yyss);
3697 free (malloced_yyvs);
3702 #include "gt-c-parse.h"