1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
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 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
45 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
57 /* Like YYERROR but do call yyerror. */
58 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
60 /* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
67 static short *malloced_yyss;
68 static void *malloced_yyvs;
70 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
75 newsize = *(YYSSZ) *= 2; \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
86 memcpy (newss, *(SS), (SSSIZE)); \
88 memcpy (newvs, *(VS), (VSSIZE)); \
90 if (!newss || !newvs) \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
104 %union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
111 /* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
116 /* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118 %token SCSPEC /* Storage class other than static. */
119 %token STATIC /* Static storage class. */
121 /* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
129 /* Character or numeric constants.
130 yylval is the node for the constant. */
133 /* String constants in raw form.
134 yylval is a STRING_CST node. */
138 /* "...", used for functions with variable arglists. */
141 /* the reserved words */
142 /* SCO include files test "ASM", so use something else. */
143 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145 %token ATTRIBUTE EXTENSION LABEL
146 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147 %token PTR_VALUE PTR_BASE PTR_EXTENT
150 /* Add precedence rules to solve dangling else s/r conflict */
154 /* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
158 %right <code> ASSIGN '='
159 %right <code> '?' ':'
165 %left <code> EQCOMPARE
166 %left <code> ARITHCOMPARE
167 %left <code> LSHIFT RSHIFT
169 %left <code> '*' '/' '%'
170 %right <code> UNARY PLUSPLUS MINUSMINUS
172 %left <code> POINTSAT '.' '(' '['
174 /* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
178 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
182 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
183 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
185 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
186 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
187 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
188 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
189 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
190 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
191 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
192 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
193 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
194 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
195 %type <ttype> declspecs_ts declspecs_nots
196 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
197 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
198 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
199 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
200 %type <ttype> typespec_nonreserved_nonattr
202 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
203 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
204 %type <ttype> init maybeasm
205 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
206 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
207 %type <ttype> any_word extension
209 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
210 %type <ttype> do_stmt_start poplevel stmt label
212 %type <ttype> c99_block_start c99_block_end
213 %type <ttype> declarator
214 %type <ttype> notype_declarator after_type_declarator
215 %type <ttype> parm_declarator
216 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
217 %type <ttype> array_declarator
219 %type <ttype> structsp_attr structsp_nonattr
220 %type <ttype> component_decl_list component_decl_list2
221 %type <ttype> component_decl components components_notype component_declarator
222 %type <ttype> component_notype_declarator
223 %type <ttype> enumlist enumerator
224 %type <ttype> struct_head union_head enum_head
225 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
226 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
227 %type <ttype> xexpr parms parm firstparm identifiers
229 %type <ttype> parmlist parmlist_1 parmlist_2
230 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
231 %type <ttype> identifiers_or_typenames
233 %type <itype> setspecs setspecs_fp
235 %type <location> save_location
238 /* the Objective-C nonterminals */
240 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
241 %type <ttype> methoddecl unaryselector keywordselector selector
242 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
243 %type <ttype> keywordexpr keywordarglist keywordarg
244 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
245 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
246 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
248 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
250 %type <ttype> superclass
251 %type <itype> objc_try_catch_stmt objc_finally_block
255 /* Number of statements (loosely speaking) and compound statements
257 static int stmt_count;
258 static int compstmt_count;
260 extern int c_in_iteration_stmt;
261 extern int c_in_case_stmt;
263 /* Input location of the end of the body of last simple_if;
264 used by the stmt-rule immediately after simple_if returns. */
265 static location_t if_stmt_locus;
268 /* List of types and structure classes of the current declaration. */
269 static GTY(()) tree current_declspecs;
270 static GTY(()) tree prefix_attributes;
272 /* List of all the attributes applying to the identifier currently being
273 declared; includes prefix_attributes and possibly some more attributes
274 just after a comma. */
275 static GTY(()) tree all_prefix_attributes;
277 /* Stack of saved values of current_declspecs, prefix_attributes and
278 all_prefix_attributes. */
279 static GTY(()) tree declspec_stack;
281 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
282 should be called from the productions making use of setspecs. */
283 #define PUSH_DECLSPEC_STACK \
285 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
286 all_prefix_attributes), \
291 #define POP_DECLSPEC_STACK \
293 current_declspecs = TREE_VALUE (declspec_stack); \
294 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
295 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
296 declspec_stack = TREE_CHAIN (declspec_stack); \
299 /* For __extension__, save/restore the warning flags which are
300 controlled by __extension__. */
301 #define SAVE_EXT_FLAGS() \
303 | (warn_pointer_arith << 1) \
304 | (warn_traditional << 2) \
307 #define RESTORE_EXT_FLAGS(tval) \
309 int val = tree_low_cst (tval, 0); \
310 pedantic = val & 1; \
311 warn_pointer_arith = (val >> 1) & 1; \
312 warn_traditional = (val >> 2) & 1; \
313 flag_iso = (val >> 3) & 1; \
317 /* Objective-C specific parser/lexer information */
319 static enum tree_code objc_inherit_code;
320 static int objc_pq_context = 0, objc_public_flag = 0;
322 /* The following flag is needed to contextualize ObjC lexical analysis.
323 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
324 an identifier to an ObjC class, even if a class with that name
326 static int objc_need_raw_identifier;
327 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
331 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
334 static bool parsing_iso_function_signature;
336 /* Tell yyparse how to print a token's value, if yydebug is set. */
338 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
340 static void yyprint (FILE *, int, YYSTYPE);
341 static void yyerror (const char *);
342 static int yylexname (void);
343 static inline int _yylex (void);
344 static int yylex (void);
345 static void init_reswords (void);
347 /* Initialisation routine for this file. */
359 pedwarn ("ISO C forbids an empty source file");
364 /* the reason for the strange actions in this rule
365 is so that notype_initdecls when reached via datadef
366 can find a valid list of type and sc specs in $0. */
369 {$<ttype>$ = NULL_TREE; } extdef
370 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
375 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
384 | ASM_KEYWORD '(' expr ')' ';'
386 if ((TREE_CODE ($3) == ADDR_EXPR
387 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
388 || TREE_CODE ($3) == STRING_CST)
391 error ("argument of `asm' is not a constant string"); }
393 { RESTORE_EXT_FLAGS ($1); }
397 setspecs notype_initdecls ';'
399 error ("ISO C forbids data definition with no type or storage class");
401 warning ("data definition has no type or storage class");
403 POP_DECLSPEC_STACK; }
404 | declspecs_nots setspecs notype_initdecls ';'
405 { POP_DECLSPEC_STACK; }
406 | declspecs_ts setspecs initdecls ';'
407 { POP_DECLSPEC_STACK; }
414 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
418 declspecs_ts setspecs declarator
419 { if (! start_function (current_declspecs, $3,
420 all_prefix_attributes))
423 old_style_parm_decls save_location
424 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
425 store_parm_decls (); }
427 { finish_function ();
428 POP_DECLSPEC_STACK; }
429 | declspecs_ts setspecs declarator error
430 { POP_DECLSPEC_STACK; }
431 | declspecs_nots setspecs notype_declarator
432 { if (! start_function (current_declspecs, $3,
433 all_prefix_attributes))
436 old_style_parm_decls save_location
437 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
438 store_parm_decls (); }
440 { finish_function ();
441 POP_DECLSPEC_STACK; }
442 | declspecs_nots setspecs notype_declarator error
443 { POP_DECLSPEC_STACK; }
444 | setspecs notype_declarator
445 { if (! start_function (NULL_TREE, $2,
446 all_prefix_attributes))
449 old_style_parm_decls save_location
450 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
451 store_parm_decls (); }
453 { finish_function ();
454 POP_DECLSPEC_STACK; }
455 | setspecs notype_declarator error
456 { POP_DECLSPEC_STACK; }
471 { $$ = NEGATE_EXPR; }
475 if (warn_traditional && !in_system_header)
476 warning ("traditional C rejects the unary plus operator");
480 { $$ = PREINCREMENT_EXPR; }
482 { $$ = PREDECREMENT_EXPR; }
484 { $$ = BIT_NOT_EXPR; }
486 { $$ = TRUTH_NOT_EXPR; }
489 expr: nonnull_exprlist
490 { $$ = build_compound_expr ($1); }
501 { $$ = build_tree_list (NULL_TREE, $1); }
502 | nonnull_exprlist ',' expr_no_commas
503 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
508 | '*' cast_expr %prec UNARY
509 { $$ = build_indirect_ref ($2, "unary *"); }
510 /* __extension__ turns off -pedantic for following primary. */
511 | extension cast_expr %prec UNARY
513 RESTORE_EXT_FLAGS ($1); }
514 | unop cast_expr %prec UNARY
515 { $$ = build_unary_op ($1, $2, 0);
516 overflow_warning ($$); }
517 /* Refer to the address of a label as a pointer. */
519 { $$ = finish_label_address_expr ($2); }
520 | sizeof unary_expr %prec UNARY
522 if (TREE_CODE ($2) == COMPONENT_REF
523 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
524 error ("`sizeof' applied to a bit-field");
525 $$ = c_sizeof (TREE_TYPE ($2)); }
526 | sizeof '(' typename ')' %prec HYPERUNARY
528 $$ = c_sizeof (groktypename ($3)); }
529 | alignof unary_expr %prec UNARY
531 $$ = c_alignof_expr ($2); }
532 | alignof '(' typename ')' %prec HYPERUNARY
534 $$ = c_alignof (groktypename ($3)); }
535 | REALPART cast_expr %prec UNARY
536 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
537 | IMAGPART cast_expr %prec UNARY
538 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
542 SIZEOF { skip_evaluation++; }
546 ALIGNOF { skip_evaluation++; }
550 TYPEOF { skip_evaluation++; }
555 | '(' typename ')' cast_expr %prec UNARY
556 { $$ = c_cast_expr ($2, $4); }
561 | expr_no_commas '+' expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas '-' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas '*' expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas '/' expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '%' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas LSHIFT expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas RSHIFT expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas ARITHCOMPARE expr_no_commas
576 { $$ = parser_build_binary_op ($2, $1, $3); }
577 | expr_no_commas EQCOMPARE expr_no_commas
578 { $$ = parser_build_binary_op ($2, $1, $3); }
579 | expr_no_commas '&' expr_no_commas
580 { $$ = parser_build_binary_op ($2, $1, $3); }
581 | expr_no_commas '|' expr_no_commas
582 { $$ = parser_build_binary_op ($2, $1, $3); }
583 | expr_no_commas '^' expr_no_commas
584 { $$ = parser_build_binary_op ($2, $1, $3); }
585 | expr_no_commas ANDAND
586 { $1 = c_common_truthvalue_conversion
587 (default_conversion ($1));
588 skip_evaluation += $1 == truthvalue_false_node; }
590 { skip_evaluation -= $1 == truthvalue_false_node;
591 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
592 | expr_no_commas OROR
593 { $1 = c_common_truthvalue_conversion
594 (default_conversion ($1));
595 skip_evaluation += $1 == truthvalue_true_node; }
597 { skip_evaluation -= $1 == truthvalue_true_node;
598 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
600 { $1 = c_common_truthvalue_conversion
601 (default_conversion ($1));
602 skip_evaluation += $1 == truthvalue_false_node; }
604 { skip_evaluation += (($1 == truthvalue_true_node)
605 - ($1 == truthvalue_false_node)); }
607 { skip_evaluation -= $1 == truthvalue_true_node;
608 $$ = build_conditional_expr ($1, $4, $7); }
611 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
612 /* Make sure first operand is calculated only once. */
613 $<ttype>2 = save_expr ($1);
614 $1 = c_common_truthvalue_conversion
615 (default_conversion ($<ttype>2));
616 skip_evaluation += $1 == truthvalue_true_node; }
618 { skip_evaluation -= $1 == truthvalue_true_node;
619 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
620 | expr_no_commas '=' expr_no_commas
622 $$ = build_modify_expr ($1, NOP_EXPR, $3);
623 class = TREE_CODE_CLASS (TREE_CODE ($$));
624 if (IS_EXPR_CODE_CLASS (class))
625 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
627 | expr_no_commas ASSIGN expr_no_commas
629 $$ = build_modify_expr ($1, $2, $3);
630 /* This inhibits warnings in
631 c_common_truthvalue_conversion. */
632 class = TREE_CODE_CLASS (TREE_CODE ($$));
633 if (IS_EXPR_CODE_CLASS (class))
634 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
641 if (yychar == YYEMPTY)
643 $$ = build_external_ref ($1, yychar == '(');
648 { $$ = fname_decl (C_RID_CODE ($$), $$); }
649 | '(' typename ')' '{'
650 { start_init (NULL_TREE, NULL, 0);
651 $2 = groktypename ($2);
652 really_start_incremental_init ($2); }
653 initlist_maybe_comma '}' %prec UNARY
654 { tree constructor = pop_init_level (0);
658 if (pedantic && ! flag_isoc99)
659 pedwarn ("ISO C89 forbids compound literals");
660 $$ = build_compound_literal (type, constructor);
663 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
664 if (IS_EXPR_CODE_CLASS (class))
665 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
668 { $$ = error_mark_node; }
669 | compstmt_primary_start compstmt_nostart ')'
670 { tree saved_last_tree;
673 pedwarn ("ISO C forbids braced-groups within expressions");
674 saved_last_tree = COMPOUND_BODY ($1);
675 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
676 last_tree = saved_last_tree;
677 TREE_CHAIN (last_tree) = NULL_TREE;
679 last_expr_type = void_type_node;
680 $$ = build1 (STMT_EXPR, last_expr_type, $1);
681 TREE_SIDE_EFFECTS ($$) = 1;
683 | compstmt_primary_start error ')'
685 last_tree = COMPOUND_BODY ($1);
686 TREE_CHAIN (last_tree) = NULL_TREE;
687 $$ = error_mark_node;
689 | primary '(' exprlist ')' %prec '.'
690 { $$ = build_function_call ($1, $3); }
691 | VA_ARG '(' expr_no_commas ',' typename ')'
692 { $$ = build_va_arg ($3, groktypename ($5)); }
694 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
700 if (TREE_CODE (c) != INTEGER_CST)
701 error ("first argument to __builtin_choose_expr not a constant");
702 $$ = integer_zerop (c) ? $7 : $5;
704 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
708 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
709 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
711 $$ = comptypes (e1, e2, COMPARE_STRICT)
712 ? build_int_2 (1, 0) : build_int_2 (0, 0);
714 | primary '[' expr ']' %prec '.'
715 { $$ = build_array_ref ($1, $3); }
716 | primary '.' identifier
719 if (!is_public ($1, $3))
720 $$ = error_mark_node;
723 $$ = build_component_ref ($1, $3);
725 | primary POINTSAT identifier
727 tree expr = build_indirect_ref ($1, "->");
730 if (!is_public (expr, $3))
731 $$ = error_mark_node;
734 $$ = build_component_ref (expr, $3);
737 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
739 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
742 { $$ = build_message_expr ($1); }
744 { $$ = build_selector_expr ($1); }
746 { $$ = build_protocol_expr ($1); }
748 { $$ = build_encode_expr ($1); }
750 { $$ = build_objc_string_object ($1); }
754 old_style_parm_decls:
755 old_style_parm_decls_1
757 parsing_iso_function_signature = false; /* Reset after decls. */
761 old_style_parm_decls_1:
764 if (warn_traditional && !in_system_header
765 && parsing_iso_function_signature)
766 warning ("traditional C rejects ISO C style function definitions");
767 if (warn_old_style_definition && !in_system_header
768 && !parsing_iso_function_signature)
769 warning ("old-style parameter declaration");
770 parsing_iso_function_signature = false; /* Reset after warning. */
774 if (warn_old_style_definition && !in_system_header)
775 warning ("old-style parameter declaration");
779 /* The following are analogous to lineno_decl, decls and decl
780 except that they do not allow nested functions.
781 They are used for old-style parm decls. */
783 save_location datadecl
790 | datadecls lineno_datadecl
791 | lineno_datadecl errstmt
794 /* We don't allow prefix attributes here because they cause reduce/reduce
795 conflicts: we can't know whether we're parsing a function decl with
796 attribute suffix, or function defn with attribute prefix on first old
799 declspecs_ts_nosa setspecs initdecls ';'
800 { POP_DECLSPEC_STACK; }
801 | declspecs_nots_nosa setspecs notype_initdecls ';'
802 { POP_DECLSPEC_STACK; }
803 | declspecs_ts_nosa ';'
804 { shadow_tag_warned ($1, 1);
805 pedwarn ("empty declaration"); }
806 | declspecs_nots_nosa ';'
807 { pedwarn ("empty declaration"); }
810 /* This combination which saves a lineno before a decl
811 is the normal thing to use, rather than decl itself.
812 This is to avoid shift/reduce conflicts in contexts
813 where statement labels are allowed. */
819 /* records the type and storage class specs to use for processing
820 the declarators that follow.
821 Maintains a stack of outer-level values of current_declspecs,
822 for the sake of parm declarations nested in function declarators. */
823 setspecs: /* empty */
824 { pending_xref_error ();
826 split_specs_attrs ($<ttype>0,
827 ¤t_declspecs, &prefix_attributes);
828 all_prefix_attributes = prefix_attributes; }
831 /* Possibly attributes after a comma, which should reset all_prefix_attributes
832 to prefix_attributes with these ones chained on the front. */
835 { all_prefix_attributes = chainon ($1, prefix_attributes); }
839 declspecs_ts setspecs initdecls ';'
840 { POP_DECLSPEC_STACK; }
841 | declspecs_nots setspecs notype_initdecls ';'
842 { POP_DECLSPEC_STACK; }
843 | declspecs_ts setspecs nested_function
844 { POP_DECLSPEC_STACK; }
845 | declspecs_nots setspecs notype_nested_function
846 { POP_DECLSPEC_STACK; }
850 { RESTORE_EXT_FLAGS ($1); }
853 /* A list of declaration specifiers. These are:
855 - Storage class specifiers (scspec), which for GCC currently includes
856 function specifiers ("inline").
858 - Type specifiers (typespec_*).
860 - Type qualifiers (TYPE_QUAL).
862 - Attribute specifier lists (attributes).
864 These are stored as a TREE_LIST; the head of the list is the last
865 item in the specifier list. Each entry in the list has either a
866 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
867 is a single other specifier or qualifier; and a TREE_CHAIN that is the
868 rest of the list. TREE_STATIC is set on the list if something other
869 than a storage class specifier or attribute has been seen; this is used
870 to warn for the obsolescent usage of storage class specifiers other than
871 at the start of the list. (Doing this properly would require function
872 specifiers to be handled separately from storage class specifiers.)
874 The various cases below are classified according to:
876 (a) Whether a storage class specifier is included or not; some
877 places in the grammar disallow storage class specifiers (_sc or _nosc).
879 (b) Whether a type specifier has been seen; after a type specifier,
880 a typedef name is an identifier to redeclare (_ts or _nots).
882 (c) Whether the list starts with an attribute; in certain places,
883 the grammar requires specifiers that don't start with an attribute
886 (d) Whether the list ends with an attribute (or a specifier such that
887 any following attribute would have been parsed as part of that specifier);
888 this avoids shift-reduce conflicts in the parsing of attributes
893 (i) Distinguish between function specifiers and storage class specifiers,
894 at least for the purpose of warnings about obsolescent usage.
896 (ii) Halve the number of productions here by eliminating the _sc/_nosc
897 distinction and instead checking where required that storage class
898 specifiers aren't present. */
900 /* Declspecs which contain at least one type specifier or typedef name.
901 (Just `const' or `volatile' is not enough.)
902 A typedef'd name following these is taken as a name to be declared.
903 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
905 declspecs_nosc_nots_nosa_noea:
907 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
908 TREE_STATIC ($$) = 1; }
909 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
910 { $$ = tree_cons (NULL_TREE, $2, $1);
911 TREE_STATIC ($$) = 1; }
912 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
913 { $$ = tree_cons (NULL_TREE, $2, $1);
914 TREE_STATIC ($$) = 1; }
917 declspecs_nosc_nots_nosa_ea:
918 declspecs_nosc_nots_nosa_noea attributes
919 { $$ = tree_cons ($2, NULL_TREE, $1);
920 TREE_STATIC ($$) = TREE_STATIC ($1); }
923 declspecs_nosc_nots_sa_noea:
924 declspecs_nosc_nots_sa_noea TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
927 | declspecs_nosc_nots_sa_ea TYPE_QUAL
928 { $$ = tree_cons (NULL_TREE, $2, $1);
929 TREE_STATIC ($$) = 1; }
932 declspecs_nosc_nots_sa_ea:
934 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
935 TREE_STATIC ($$) = 0; }
936 | declspecs_nosc_nots_sa_noea attributes
937 { $$ = tree_cons ($2, NULL_TREE, $1);
938 TREE_STATIC ($$) = TREE_STATIC ($1); }
941 declspecs_nosc_ts_nosa_noea:
943 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
957 | declspecs_nosc_nots_nosa_noea typespec_nonattr
958 { $$ = tree_cons (NULL_TREE, $2, $1);
959 TREE_STATIC ($$) = 1; }
960 | declspecs_nosc_nots_nosa_ea typespec_nonattr
961 { $$ = tree_cons (NULL_TREE, $2, $1);
962 TREE_STATIC ($$) = 1; }
965 declspecs_nosc_ts_nosa_ea:
967 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
968 TREE_STATIC ($$) = 1; }
969 | declspecs_nosc_ts_nosa_noea attributes
970 { $$ = tree_cons ($2, NULL_TREE, $1);
971 TREE_STATIC ($$) = TREE_STATIC ($1); }
972 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
978 | declspecs_nosc_nots_nosa_noea typespec_attr
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
981 | declspecs_nosc_nots_nosa_ea typespec_attr
982 { $$ = tree_cons (NULL_TREE, $2, $1);
983 TREE_STATIC ($$) = 1; }
986 declspecs_nosc_ts_sa_noea:
987 declspecs_nosc_ts_sa_noea TYPE_QUAL
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_ea TYPE_QUAL
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
999 | declspecs_nosc_nots_sa_noea typespec_nonattr
1000 { $$ = tree_cons (NULL_TREE, $2, $1);
1001 TREE_STATIC ($$) = 1; }
1002 | declspecs_nosc_nots_sa_ea typespec_nonattr
1003 { $$ = tree_cons (NULL_TREE, $2, $1);
1004 TREE_STATIC ($$) = 1; }
1007 declspecs_nosc_ts_sa_ea:
1008 declspecs_nosc_ts_sa_noea attributes
1009 { $$ = tree_cons ($2, NULL_TREE, $1);
1010 TREE_STATIC ($$) = TREE_STATIC ($1); }
1011 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1014 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1015 { $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = 1; }
1017 | declspecs_nosc_nots_sa_noea typespec_attr
1018 { $$ = tree_cons (NULL_TREE, $2, $1);
1019 TREE_STATIC ($$) = 1; }
1020 | declspecs_nosc_nots_sa_ea typespec_attr
1021 { $$ = tree_cons (NULL_TREE, $2, $1);
1022 TREE_STATIC ($$) = 1; }
1025 declspecs_sc_nots_nosa_noea:
1027 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1028 TREE_STATIC ($$) = 0; }
1029 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1030 { $$ = tree_cons (NULL_TREE, $2, $1);
1031 TREE_STATIC ($$) = 1; }
1032 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1033 { $$ = tree_cons (NULL_TREE, $2, $1);
1034 TREE_STATIC ($$) = 1; }
1035 | declspecs_nosc_nots_nosa_noea scspec
1036 { if (extra_warnings && TREE_STATIC ($1))
1037 warning ("`%s' is not at beginning of declaration",
1038 IDENTIFIER_POINTER ($2));
1039 $$ = tree_cons (NULL_TREE, $2, $1);
1040 TREE_STATIC ($$) = TREE_STATIC ($1); }
1041 | declspecs_nosc_nots_nosa_ea scspec
1042 { if (extra_warnings && TREE_STATIC ($1))
1043 warning ("`%s' is not at beginning of declaration",
1044 IDENTIFIER_POINTER ($2));
1045 $$ = tree_cons (NULL_TREE, $2, $1);
1046 TREE_STATIC ($$) = TREE_STATIC ($1); }
1047 | declspecs_sc_nots_nosa_noea scspec
1048 { if (extra_warnings && TREE_STATIC ($1))
1049 warning ("`%s' is not at beginning of declaration",
1050 IDENTIFIER_POINTER ($2));
1051 $$ = tree_cons (NULL_TREE, $2, $1);
1052 TREE_STATIC ($$) = TREE_STATIC ($1); }
1053 | declspecs_sc_nots_nosa_ea scspec
1054 { if (extra_warnings && TREE_STATIC ($1))
1055 warning ("`%s' is not at beginning of declaration",
1056 IDENTIFIER_POINTER ($2));
1057 $$ = tree_cons (NULL_TREE, $2, $1);
1058 TREE_STATIC ($$) = TREE_STATIC ($1); }
1061 declspecs_sc_nots_nosa_ea:
1062 declspecs_sc_nots_nosa_noea attributes
1063 { $$ = tree_cons ($2, NULL_TREE, $1);
1064 TREE_STATIC ($$) = TREE_STATIC ($1); }
1067 declspecs_sc_nots_sa_noea:
1068 declspecs_sc_nots_sa_noea TYPE_QUAL
1069 { $$ = tree_cons (NULL_TREE, $2, $1);
1070 TREE_STATIC ($$) = 1; }
1071 | declspecs_sc_nots_sa_ea TYPE_QUAL
1072 { $$ = tree_cons (NULL_TREE, $2, $1);
1073 TREE_STATIC ($$) = 1; }
1074 | declspecs_nosc_nots_sa_noea scspec
1075 { if (extra_warnings && TREE_STATIC ($1))
1076 warning ("`%s' is not at beginning of declaration",
1077 IDENTIFIER_POINTER ($2));
1078 $$ = tree_cons (NULL_TREE, $2, $1);
1079 TREE_STATIC ($$) = TREE_STATIC ($1); }
1080 | declspecs_nosc_nots_sa_ea scspec
1081 { if (extra_warnings && TREE_STATIC ($1))
1082 warning ("`%s' is not at beginning of declaration",
1083 IDENTIFIER_POINTER ($2));
1084 $$ = tree_cons (NULL_TREE, $2, $1);
1085 TREE_STATIC ($$) = TREE_STATIC ($1); }
1086 | declspecs_sc_nots_sa_noea scspec
1087 { if (extra_warnings && TREE_STATIC ($1))
1088 warning ("`%s' is not at beginning of declaration",
1089 IDENTIFIER_POINTER ($2));
1090 $$ = tree_cons (NULL_TREE, $2, $1);
1091 TREE_STATIC ($$) = TREE_STATIC ($1); }
1092 | declspecs_sc_nots_sa_ea scspec
1093 { if (extra_warnings && TREE_STATIC ($1))
1094 warning ("`%s' is not at beginning of declaration",
1095 IDENTIFIER_POINTER ($2));
1096 $$ = tree_cons (NULL_TREE, $2, $1);
1097 TREE_STATIC ($$) = TREE_STATIC ($1); }
1100 declspecs_sc_nots_sa_ea:
1101 declspecs_sc_nots_sa_noea attributes
1102 { $$ = tree_cons ($2, NULL_TREE, $1);
1103 TREE_STATIC ($$) = TREE_STATIC ($1); }
1106 declspecs_sc_ts_nosa_noea:
1107 declspecs_sc_ts_nosa_noea TYPE_QUAL
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1117 { $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = 1; }
1119 | declspecs_sc_nots_nosa_noea typespec_nonattr
1120 { $$ = tree_cons (NULL_TREE, $2, $1);
1121 TREE_STATIC ($$) = 1; }
1122 | declspecs_sc_nots_nosa_ea typespec_nonattr
1123 { $$ = tree_cons (NULL_TREE, $2, $1);
1124 TREE_STATIC ($$) = 1; }
1125 | declspecs_nosc_ts_nosa_noea scspec
1126 { if (extra_warnings && TREE_STATIC ($1))
1127 warning ("`%s' is not at beginning of declaration",
1128 IDENTIFIER_POINTER ($2));
1129 $$ = tree_cons (NULL_TREE, $2, $1);
1130 TREE_STATIC ($$) = TREE_STATIC ($1); }
1131 | declspecs_nosc_ts_nosa_ea scspec
1132 { if (extra_warnings && TREE_STATIC ($1))
1133 warning ("`%s' is not at beginning of declaration",
1134 IDENTIFIER_POINTER ($2));
1135 $$ = tree_cons (NULL_TREE, $2, $1);
1136 TREE_STATIC ($$) = TREE_STATIC ($1); }
1137 | declspecs_sc_ts_nosa_noea scspec
1138 { if (extra_warnings && TREE_STATIC ($1))
1139 warning ("`%s' is not at beginning of declaration",
1140 IDENTIFIER_POINTER ($2));
1141 $$ = tree_cons (NULL_TREE, $2, $1);
1142 TREE_STATIC ($$) = TREE_STATIC ($1); }
1143 | declspecs_sc_ts_nosa_ea scspec
1144 { if (extra_warnings && TREE_STATIC ($1))
1145 warning ("`%s' is not at beginning of declaration",
1146 IDENTIFIER_POINTER ($2));
1147 $$ = tree_cons (NULL_TREE, $2, $1);
1148 TREE_STATIC ($$) = TREE_STATIC ($1); }
1151 declspecs_sc_ts_nosa_ea:
1152 declspecs_sc_ts_nosa_noea attributes
1153 { $$ = tree_cons ($2, NULL_TREE, $1);
1154 TREE_STATIC ($$) = TREE_STATIC ($1); }
1155 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1161 | declspecs_sc_nots_nosa_noea typespec_attr
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1164 | declspecs_sc_nots_nosa_ea typespec_attr
1165 { $$ = tree_cons (NULL_TREE, $2, $1);
1166 TREE_STATIC ($$) = 1; }
1169 declspecs_sc_ts_sa_noea:
1170 declspecs_sc_ts_sa_noea TYPE_QUAL
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_ts_sa_ea TYPE_QUAL
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1180 { $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = 1; }
1182 | declspecs_sc_nots_sa_noea typespec_nonattr
1183 { $$ = tree_cons (NULL_TREE, $2, $1);
1184 TREE_STATIC ($$) = 1; }
1185 | declspecs_sc_nots_sa_ea typespec_nonattr
1186 { $$ = tree_cons (NULL_TREE, $2, $1);
1187 TREE_STATIC ($$) = 1; }
1188 | declspecs_nosc_ts_sa_noea scspec
1189 { if (extra_warnings && TREE_STATIC ($1))
1190 warning ("`%s' is not at beginning of declaration",
1191 IDENTIFIER_POINTER ($2));
1192 $$ = tree_cons (NULL_TREE, $2, $1);
1193 TREE_STATIC ($$) = TREE_STATIC ($1); }
1194 | declspecs_nosc_ts_sa_ea scspec
1195 { if (extra_warnings && TREE_STATIC ($1))
1196 warning ("`%s' is not at beginning of declaration",
1197 IDENTIFIER_POINTER ($2));
1198 $$ = tree_cons (NULL_TREE, $2, $1);
1199 TREE_STATIC ($$) = TREE_STATIC ($1); }
1200 | declspecs_sc_ts_sa_noea scspec
1201 { if (extra_warnings && TREE_STATIC ($1))
1202 warning ("`%s' is not at beginning of declaration",
1203 IDENTIFIER_POINTER ($2));
1204 $$ = tree_cons (NULL_TREE, $2, $1);
1205 TREE_STATIC ($$) = TREE_STATIC ($1); }
1206 | declspecs_sc_ts_sa_ea scspec
1207 { if (extra_warnings && TREE_STATIC ($1))
1208 warning ("`%s' is not at beginning of declaration",
1209 IDENTIFIER_POINTER ($2));
1210 $$ = tree_cons (NULL_TREE, $2, $1);
1211 TREE_STATIC ($$) = TREE_STATIC ($1); }
1214 declspecs_sc_ts_sa_ea:
1215 declspecs_sc_ts_sa_noea attributes
1216 { $$ = tree_cons ($2, NULL_TREE, $1);
1217 TREE_STATIC ($$) = TREE_STATIC ($1); }
1218 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1221 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1222 { $$ = tree_cons (NULL_TREE, $2, $1);
1223 TREE_STATIC ($$) = 1; }
1224 | declspecs_sc_nots_sa_noea typespec_attr
1225 { $$ = tree_cons (NULL_TREE, $2, $1);
1226 TREE_STATIC ($$) = 1; }
1227 | declspecs_sc_nots_sa_ea typespec_attr
1228 { $$ = tree_cons (NULL_TREE, $2, $1);
1229 TREE_STATIC ($$) = 1; }
1232 /* Particular useful classes of declspecs. */
1234 declspecs_nosc_ts_nosa_noea
1235 | declspecs_nosc_ts_nosa_ea
1236 | declspecs_nosc_ts_sa_noea
1237 | declspecs_nosc_ts_sa_ea
1238 | declspecs_sc_ts_nosa_noea
1239 | declspecs_sc_ts_nosa_ea
1240 | declspecs_sc_ts_sa_noea
1241 | declspecs_sc_ts_sa_ea
1245 declspecs_nosc_nots_nosa_noea
1246 | declspecs_nosc_nots_nosa_ea
1247 | declspecs_nosc_nots_sa_noea
1248 | declspecs_nosc_nots_sa_ea
1249 | declspecs_sc_nots_nosa_noea
1250 | declspecs_sc_nots_nosa_ea
1251 | declspecs_sc_nots_sa_noea
1252 | declspecs_sc_nots_sa_ea
1256 declspecs_nosc_ts_nosa_noea
1257 | declspecs_nosc_ts_nosa_ea
1258 | declspecs_sc_ts_nosa_noea
1259 | declspecs_sc_ts_nosa_ea
1262 declspecs_nots_nosa:
1263 declspecs_nosc_nots_nosa_noea
1264 | declspecs_nosc_nots_nosa_ea
1265 | declspecs_sc_nots_nosa_noea
1266 | declspecs_sc_nots_nosa_ea
1270 declspecs_nosc_ts_nosa_noea
1271 | declspecs_nosc_ts_nosa_ea
1272 | declspecs_nosc_ts_sa_noea
1273 | declspecs_nosc_ts_sa_ea
1276 declspecs_nosc_nots:
1277 declspecs_nosc_nots_nosa_noea
1278 | declspecs_nosc_nots_nosa_ea
1279 | declspecs_nosc_nots_sa_noea
1280 | declspecs_nosc_nots_sa_ea
1284 declspecs_nosc_ts_nosa_noea
1285 | declspecs_nosc_ts_nosa_ea
1286 | declspecs_nosc_ts_sa_noea
1287 | declspecs_nosc_ts_sa_ea
1288 | declspecs_nosc_nots_nosa_noea
1289 | declspecs_nosc_nots_nosa_ea
1290 | declspecs_nosc_nots_sa_noea
1291 | declspecs_nosc_nots_sa_ea
1295 declspecs_nosc_nots_nosa_noea
1296 | declspecs_nosc_nots_nosa_ea
1297 | declspecs_nosc_nots_sa_noea
1298 | declspecs_nosc_nots_sa_ea
1299 | declspecs_nosc_ts_nosa_noea
1300 | declspecs_nosc_ts_nosa_ea
1301 | declspecs_nosc_ts_sa_noea
1302 | declspecs_nosc_ts_sa_ea
1303 | declspecs_sc_nots_nosa_noea
1304 | declspecs_sc_nots_nosa_ea
1305 | declspecs_sc_nots_sa_noea
1306 | declspecs_sc_nots_sa_ea
1307 | declspecs_sc_ts_nosa_noea
1308 | declspecs_sc_ts_nosa_ea
1309 | declspecs_sc_ts_sa_noea
1310 | declspecs_sc_ts_sa_ea
1313 /* A (possibly empty) sequence of type qualifiers and attributes. */
1314 maybe_type_quals_attrs:
1317 | declspecs_nosc_nots
1321 /* A type specifier (but not a type qualifier).
1322 Once we have seen one of these in a declaration,
1323 if a typedef name appears then it is being redeclared.
1325 The _reserved versions start with a reserved word and may appear anywhere
1326 in the declaration specifiers; the _nonreserved versions may only
1327 appear before any other type specifiers, and after that are (if names)
1330 FIXME: should the _nonreserved version be restricted to names being
1331 redeclared only? The other entries there relate only the GNU extensions
1332 and Objective C, and are historically parsed thus, and don't make sense
1333 after other type specifiers, but it might be cleaner to count them as
1336 _attr means: specifiers that either end with attributes,
1337 or are such that any following attributes would
1338 be parsed as part of the specifier.
1340 _nonattr: specifiers. */
1343 typespec_reserved_nonattr
1344 | typespec_nonreserved_nonattr
1348 typespec_reserved_attr
1351 typespec_reserved_nonattr:
1353 { OBJC_NEED_RAW_IDENTIFIER (1); }
1357 typespec_reserved_attr:
1361 typespec_nonreserved_nonattr:
1363 { /* For a typedef name, record the meaning, not the name.
1364 In case of `foo foo, bar;'. */
1365 $$ = lookup_name ($1); }
1367 | CLASSNAME protocolrefs
1368 { $$ = get_static_reference ($1, $2); }
1369 | OBJECTNAME protocolrefs
1370 { $$ = get_object_reference ($2); }
1372 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1373 - nisse@lysator.liu.se */
1374 | non_empty_protocolrefs
1375 { $$ = get_object_reference ($1); }
1377 | typeof '(' expr ')'
1378 { skip_evaluation--; $$ = TREE_TYPE ($3); }
1379 | typeof '(' typename ')'
1380 { skip_evaluation--; $$ = groktypename ($3); }
1383 /* typespec_nonreserved_attr does not exist. */
1387 | initdecls ',' maybe_resetattrs initdcl
1392 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1398 | ASM_KEYWORD '(' STRING ')'
1403 declarator maybeasm maybe_attribute '='
1404 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1405 chainon ($3, all_prefix_attributes));
1406 start_init ($<ttype>$, $2, global_bindings_p ()); }
1408 /* Note how the declaration of the variable is in effect while its init is parsed! */
1410 finish_decl ($<ttype>5, $6, $2); }
1411 | declarator maybeasm maybe_attribute
1412 { tree d = start_decl ($1, current_declspecs, 0,
1413 chainon ($3, all_prefix_attributes));
1414 finish_decl (d, NULL_TREE, $2);
1419 notype_declarator maybeasm maybe_attribute '='
1420 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1421 chainon ($3, all_prefix_attributes));
1422 start_init ($<ttype>$, $2, global_bindings_p ()); }
1424 /* Note how the declaration of the variable is in effect while its init is parsed! */
1426 finish_decl ($<ttype>5, $6, $2); }
1427 | notype_declarator maybeasm maybe_attribute
1428 { tree d = start_decl ($1, current_declspecs, 0,
1429 chainon ($3, all_prefix_attributes));
1430 finish_decl (d, NULL_TREE, $2); }
1432 /* the * rules are dummies to accept the Apollo extended syntax
1433 so that the header files compile. */
1444 | attributes attribute
1445 { $$ = chainon ($1, $2); }
1449 ATTRIBUTE '(' '(' attribute_list ')' ')'
1456 | attribute_list ',' attrib
1457 { $$ = chainon ($1, $3); }
1464 { $$ = build_tree_list ($1, NULL_TREE); }
1465 | any_word '(' IDENTIFIER ')'
1466 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1467 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1468 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1469 | any_word '(' exprlist ')'
1470 { $$ = build_tree_list ($1, $3); }
1473 /* This still leaves out most reserved keywords,
1474 shouldn't we include them? */
1488 /* Initializers. `init' is the entry point. */
1493 { really_start_incremental_init (NULL_TREE); }
1494 initlist_maybe_comma '}'
1495 { $$ = pop_init_level (0); }
1497 { $$ = error_mark_node; }
1500 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1501 initlist_maybe_comma:
1504 pedwarn ("ISO C forbids empty initializer braces"); }
1505 | initlist1 maybecomma
1510 | initlist1 ',' initelt
1513 /* `initelt' is a single element of an initializer.
1514 It may use braces. */
1516 designator_list '=' initval
1517 { if (pedantic && ! flag_isoc99)
1518 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1519 | designator initval
1521 pedwarn ("obsolete use of designated initializer without `='"); }
1523 { set_init_label ($1);
1525 pedwarn ("obsolete use of designated initializer with `:'"); }
1533 { push_init_level (0); }
1534 initlist_maybe_comma '}'
1535 { process_init_element (pop_init_level (0)); }
1537 { process_init_element ($1); }
1543 | designator_list designator
1548 { set_init_label ($2); }
1549 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1550 { set_init_index ($2, $4);
1552 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1553 | '[' expr_no_commas ']'
1554 { set_init_index ($2, NULL_TREE); }
1560 pedwarn ("ISO C forbids nested functions");
1562 push_function_context ();
1563 if (! start_function (current_declspecs, $1,
1564 all_prefix_attributes))
1566 pop_function_context ();
1569 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1571 old_style_parm_decls save_location
1572 { tree decl = current_function_decl;
1573 DECL_SOURCE_LOCATION (decl) = $4;
1574 store_parm_decls (); }
1575 /* This used to use compstmt_or_error.
1576 That caused a bug with input `f(g) int g {}',
1577 where the use of YYERROR1 above caused an error
1578 which then was handled by compstmt_or_error.
1579 There followed a repeated execution of that same rule,
1580 which called YYERROR1 again, and so on. */
1582 { tree decl = current_function_decl;
1584 pop_function_context ();
1585 add_decl_stmt (decl); }
1588 notype_nested_function:
1591 pedwarn ("ISO C forbids nested functions");
1593 push_function_context ();
1594 if (! start_function (current_declspecs, $1,
1595 all_prefix_attributes))
1597 pop_function_context ();
1600 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1602 old_style_parm_decls save_location
1603 { tree decl = current_function_decl;
1604 DECL_SOURCE_LOCATION (decl) = $4;
1605 store_parm_decls (); }
1606 /* This used to use compstmt_or_error.
1607 That caused a bug with input `f(g) int g {}',
1608 where the use of YYERROR1 above caused an error
1609 which then was handled by compstmt_or_error.
1610 There followed a repeated execution of that same rule,
1611 which called YYERROR1 again, and so on. */
1613 { tree decl = current_function_decl;
1615 pop_function_context ();
1616 add_decl_stmt (decl); }
1619 /* Any kind of declarator (thus, all declarators allowed
1620 after an explicit typespec). */
1623 after_type_declarator
1627 /* A declarator that is allowed only after an explicit typespec. */
1629 after_type_declarator:
1630 '(' maybe_attribute after_type_declarator ')'
1631 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1632 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1633 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1634 /* | after_type_declarator '(' error ')' %prec '.'
1635 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1636 poplevel (0, 0, 0); } */
1637 | after_type_declarator array_declarator %prec '.'
1638 { $$ = set_array_declarator_type ($2, $1, 0); }
1639 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1640 { $$ = make_pointer_declarator ($2, $3); }
1647 /* Kinds of declarator that can appear in a parameter list
1648 in addition to notype_declarator. This is like after_type_declarator
1649 but does not allow a typedef name in parentheses as an identifier
1650 (because it would conflict with a function with that typedef as arg). */
1652 parm_declarator_starttypename
1653 | parm_declarator_nostarttypename
1656 parm_declarator_starttypename:
1657 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_starttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1670 parm_declarator_nostarttypename:
1671 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1672 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1673 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1674 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1675 poplevel (0, 0, 0); } */
1676 | parm_declarator_nostarttypename array_declarator %prec '.'
1677 { $$ = set_array_declarator_type ($2, $1, 0); }
1678 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1679 { $$ = make_pointer_declarator ($2, $3); }
1680 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1681 { $$ = make_pointer_declarator ($2, $3); }
1682 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1683 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1686 /* A declarator allowed whether or not there has been
1687 an explicit typespec. These cannot redeclare a typedef-name. */
1690 notype_declarator '(' parmlist_or_identifiers %prec '.'
1691 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1692 /* | notype_declarator '(' error ')' %prec '.'
1693 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1694 poplevel (0, 0, 0); } */
1695 | '(' maybe_attribute notype_declarator ')'
1696 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1697 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1698 { $$ = make_pointer_declarator ($2, $3); }
1699 | notype_declarator array_declarator %prec '.'
1700 { $$ = set_array_declarator_type ($2, $1, 0); }
1725 /* structsp_attr: struct/union/enum specifiers that either
1726 end with attributes, or are such that any following attributes would
1727 be parsed as part of the struct/union/enum specifier.
1729 structsp_nonattr: other struct/union/enum specifiers. */
1732 struct_head identifier '{'
1733 { $$ = start_struct (RECORD_TYPE, $2);
1734 /* Start scope of tag before parsing components. */
1736 component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1738 chainon ($1, $7)); }
1739 | struct_head '{' component_decl_list '}' maybe_attribute
1740 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1741 nreverse ($3), chainon ($1, $5));
1743 | union_head identifier '{'
1744 { $$ = start_struct (UNION_TYPE, $2); }
1745 component_decl_list '}' maybe_attribute
1746 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1747 chainon ($1, $7)); }
1748 | union_head '{' component_decl_list '}' maybe_attribute
1749 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1750 nreverse ($3), chainon ($1, $5));
1752 | enum_head identifier '{'
1753 { $$ = start_enum ($2); }
1754 enumlist maybecomma_warn '}' maybe_attribute
1755 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1756 chainon ($1, $8)); }
1758 { $$ = start_enum (NULL_TREE); }
1759 enumlist maybecomma_warn '}' maybe_attribute
1760 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1761 chainon ($1, $7)); }
1765 struct_head identifier
1766 { $$ = xref_tag (RECORD_TYPE, $2); }
1767 | union_head identifier
1768 { $$ = xref_tag (UNION_TYPE, $2); }
1769 | enum_head identifier
1770 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1771 /* In ISO C, enumerated types can be referred to
1772 only if already defined. */
1773 if (pedantic && !COMPLETE_TYPE_P ($$))
1774 pedwarn ("ISO C forbids forward references to `enum' types"); }
1785 { if (pedantic && ! flag_isoc99)
1786 pedwarn ("comma at end of enumerator list"); }
1789 /* We chain the components in reverse order. They are put in forward
1790 order in structsp_attr.
1792 Note that component_declarator returns single decls, so components
1793 and components_notype can use TREE_CHAIN directly, wheras components
1794 and components_notype return lists (of comma separated decls), so
1795 component_decl_list and component_decl_list2 must use chainon.
1797 The theory behind all this is that there will be more semicolon
1798 separated fields than comma separated fields, and so we'll be
1799 minimizing the number of node traversals required by chainon. */
1801 component_decl_list:
1802 component_decl_list2
1804 | component_decl_list2 component_decl
1805 { $$ = chainon ($2, $1);
1806 pedwarn ("no semicolon at end of struct or union"); }
1809 component_decl_list2: /* empty */
1811 | component_decl_list2 component_decl ';'
1812 { $$ = chainon ($2, $1); }
1813 | component_decl_list2 ';'
1815 pedwarn ("extra semicolon in struct or union specified"); }
1817 /* foo(sizeof(struct{ @defs(ClassName)})); */
1818 | DEFS '(' CLASSNAME ')'
1819 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1824 declspecs_nosc_ts setspecs components
1826 POP_DECLSPEC_STACK; }
1827 | declspecs_nosc_ts setspecs
1829 /* Support for unnamed structs or unions as members of
1830 structs or unions (which is [a] useful and [b] supports
1833 pedwarn ("ISO C doesn't support unnamed structs/unions");
1835 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots setspecs components_notype
1839 POP_DECLSPEC_STACK; }
1840 | declspecs_nosc_nots
1842 pedwarn ("ISO C forbids member declarations with no members");
1843 shadow_tag_warned ($1, pedantic);
1847 | extension component_decl
1849 RESTORE_EXT_FLAGS ($1); }
1853 component_declarator
1854 | components ',' maybe_resetattrs component_declarator
1855 { TREE_CHAIN ($4) = $1; $$ = $4; }
1859 component_notype_declarator
1860 | components_notype ',' maybe_resetattrs component_notype_declarator
1861 { TREE_CHAIN ($4) = $1; $$ = $4; }
1864 component_declarator:
1865 declarator maybe_attribute
1866 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1867 decl_attributes (&$$,
1868 chainon ($2, all_prefix_attributes), 0); }
1869 | declarator ':' expr_no_commas maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, $3);
1871 decl_attributes (&$$,
1872 chainon ($4, all_prefix_attributes), 0); }
1873 | ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1875 decl_attributes (&$$,
1876 chainon ($3, all_prefix_attributes), 0); }
1879 component_notype_declarator:
1880 notype_declarator maybe_attribute
1881 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1882 decl_attributes (&$$,
1883 chainon ($2, all_prefix_attributes), 0); }
1884 | notype_declarator ':' expr_no_commas maybe_attribute
1885 { $$ = grokfield ($1, current_declspecs, $3);
1886 decl_attributes (&$$,
1887 chainon ($4, all_prefix_attributes), 0); }
1888 | ':' expr_no_commas maybe_attribute
1889 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1890 decl_attributes (&$$,
1891 chainon ($3, all_prefix_attributes), 0); }
1894 /* We chain the enumerators in reverse order.
1895 They are put in forward order in structsp_attr. */
1899 | enumlist ',' enumerator
1900 { if ($1 == error_mark_node)
1903 TREE_CHAIN ($3) = $1, $$ = $3; }
1905 { $$ = error_mark_node; }
1911 { $$ = build_enumerator ($1, NULL_TREE); }
1912 | identifier '=' expr_no_commas
1913 { $$ = build_enumerator ($1, $3); }
1918 { pending_xref_error ();
1921 { $$ = build_tree_list ($<ttype>2, $3); }
1924 absdcl: /* an absolute declarator */
1930 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1932 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 all_prefix_attributes); }
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 all_prefix_attributes); }
1939 | absdcl1_noea attributes
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1942 chainon ($2, all_prefix_attributes)); }
1945 absdcl1: /* a nonempty absolute declarator */
1952 | '*' maybe_type_quals_attrs absdcl1_noea
1953 { $$ = make_pointer_declarator ($2, $3); }
1957 '*' maybe_type_quals_attrs
1958 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1959 | '*' maybe_type_quals_attrs absdcl1_ea
1960 { $$ = make_pointer_declarator ($2, $3); }
1964 '(' maybe_attribute absdcl1 ')'
1965 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1966 | direct_absdcl1 '(' parmlist
1967 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1968 | direct_absdcl1 array_declarator
1969 { $$ = set_array_declarator_type ($2, $1, 1); }
1971 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1973 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1976 /* The [...] part of a declarator for an array type. */
1979 '[' maybe_type_quals_attrs expr_no_commas ']'
1980 { $$ = build_array_declarator ($3, $2, 0, 0); }
1981 | '[' maybe_type_quals_attrs ']'
1982 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1983 | '[' maybe_type_quals_attrs '*' ']'
1984 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1985 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1986 { $$ = build_array_declarator ($4, $3, 1, 0); }
1987 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1988 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1989 { $$ = build_array_declarator ($4, $2, 1, 0); }
1992 /* A nonempty series of declarations and statements (possibly followed by
1993 some labels) that can form the body of a compound statement.
1994 NOTE: we don't allow labels on declarations; this might seem like a
1995 natural extension, but there would be a conflict between attributes
1996 on the label and prefix attributes on the declaration. */
1999 lineno_stmt_decl_or_labels_ending_stmt
2000 | lineno_stmt_decl_or_labels_ending_decl
2001 | lineno_stmt_decl_or_labels_ending_label
2003 pedwarn ("deprecated use of label at end of compound statement");
2005 | lineno_stmt_decl_or_labels_ending_error
2008 lineno_stmt_decl_or_labels_ending_stmt:
2010 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2011 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2012 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2013 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2016 lineno_stmt_decl_or_labels_ending_decl:
2018 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2020 if ((pedantic && !flag_isoc99)
2021 || warn_declaration_after_statement)
2022 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2024 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2025 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2028 lineno_stmt_decl_or_labels_ending_label:
2030 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2031 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2032 | lineno_stmt_decl_or_labels_ending_label lineno_label
2033 | lineno_stmt_decl_or_labels_ending_error lineno_label
2036 lineno_stmt_decl_or_labels_ending_error:
2038 | lineno_stmt_decl_or_labels errstmt
2041 lineno_stmt_decl_or_labels:
2042 lineno_stmt_decl_or_labels_ending_stmt
2043 | lineno_stmt_decl_or_labels_ending_decl
2044 | lineno_stmt_decl_or_labels_ending_label
2045 | lineno_stmt_decl_or_labels_ending_error
2051 pushlevel: /* empty */
2054 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2058 poplevel: /* empty */
2061 if (c_dialect_objc ())
2062 objc_clear_super_receiver ();
2064 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2068 /* Start and end blocks created for the new scopes of C99. */
2069 c99_block_start: /* empty */
2072 $$ = c_begin_compound_stmt ();
2075 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2082 /* Productions using c99_block_start and c99_block_end will need to do what's
2083 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2084 $1 is the value of c99_block_start and $2 of c99_block_end. */
2085 c99_block_end: /* empty */
2088 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2089 $$ = poplevel (KEEP_MAYBE, 0, 0);
2090 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2091 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2098 /* Read zero or more forward-declarations for labels
2099 that nested functions can jump to. */
2104 pedwarn ("ISO C forbids label declarations"); }
2109 | label_decls label_decl
2113 LABEL identifiers_or_typenames ';'
2115 for (link = $2; link; link = TREE_CHAIN (link))
2117 tree label = declare_label (TREE_VALUE (link));
2118 C_DECLARED_LABEL_FLAG (label) = 1;
2119 add_decl_stmt (label);
2124 /* This is the body of a function definition.
2125 It causes syntax errors to ignore to the next openbrace. */
2132 compstmt_start: '{' { compstmt_count++;
2133 $$ = c_begin_compound_stmt (); }
2136 compstmt_nostart: '}'
2137 { $$ = convert (void_type_node, integer_zero_node); }
2138 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2139 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2140 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2141 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2145 compstmt_contents_nonempty:
2150 compstmt_primary_start:
2152 { if (current_function_decl == 0)
2154 error ("braced-group within expression allowed only inside a function");
2157 /* We must force a BLOCK for this level
2158 so that, if it is not expanded later,
2159 there is a way to turn off the entire subtree of blocks
2160 that are contained in it. */
2163 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2167 compstmt: compstmt_start compstmt_nostart
2168 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2169 last_expr_type = NULL_TREE;
2173 /* Value is number of statements counted as of the closeparen. */
2175 if_prefix c99_block_lineno_labeled_stmt
2176 { c_finish_then (); }
2177 /* Make sure c_expand_end_cond is run once
2178 for each call to c_expand_start_cond.
2179 Otherwise a crash is likely. */
2184 /* We must build the IF_STMT node before parsing its
2185 condition so that STMT_LINENO refers to the line
2186 containing the "if", and not the line containing
2187 the close-parenthesis.
2189 c_begin_if_stmt returns the IF_STMT node, which
2190 we later pass to c_expand_start_cond to fill
2191 in the condition and other tidbits. */
2193 { $<ttype>$ = c_begin_if_stmt (); }
2195 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2196 compstmt_count,$<ttype>2);
2197 $<itype>$ = stmt_count;
2198 if_stmt_locus = $<location>-1; }
2201 /* This is a subroutine of stmt.
2202 It is used twice, once for valid DO statements
2203 and once for catching errors in parsing the end test. */
2208 c_in_iteration_stmt++;
2210 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2212 /* In the event that a parse error prevents
2213 parsing the complete do-statement, set the
2214 condition now. Otherwise, we can get crashes at
2215 RTL-generation time. */
2216 DO_COND ($<ttype>$) = error_mark_node; }
2217 c99_block_lineno_labeled_stmt WHILE
2219 RECHAIN_STMTS ($$, DO_BODY ($$));
2220 c_in_iteration_stmt--; }
2223 /* The forced readahead in here is because we might be at the end of a
2224 line, and the line and file won't be bumped until yylex absorbs the
2225 first token on the next line. */
2228 { if (yychar == YYEMPTY)
2230 $$ = input_location; }
2233 lineno_labeled_stmt:
2235 | lineno_label lineno_labeled_stmt
2238 /* Like lineno_labeled_stmt, but a block in C99. */
2239 c99_block_lineno_labeled_stmt:
2240 c99_block_start lineno_labeled_stmt c99_block_end
2242 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2249 STMT_LINENO ($2) = $1.line;
2250 /* ??? We currently have no way of recording
2251 the filename for a statement. This probably
2252 matters little in practice at the moment,
2253 but I suspect that problems will occur when
2254 doing inlining at the tree level. */
2263 STMT_LINENO ($2) = $1.line;
2268 select_or_iter_stmt:
2270 { c_expand_start_else ();
2271 $<itype>1 = stmt_count; }
2272 c99_block_lineno_labeled_stmt
2274 c_expand_end_cond ();
2275 if (extra_warnings && stmt_count == $<itype>1)
2276 warning ("empty body in an else-statement"); }
2277 | simple_if %prec IF
2278 { c_expand_end_cond ();
2279 /* This warning is here instead of in simple_if, because we
2280 do not want a warning if an empty if is followed by an
2281 else statement. Increment stmt_count so we don't
2282 give a second error if this is a nested `if'. */
2283 if (extra_warnings && stmt_count++ == $<itype>1)
2284 warning ("%Hempty body in an if-statement",
2286 /* Make sure c_expand_end_cond is run once
2287 for each call to c_expand_start_cond.
2288 Otherwise a crash is likely. */
2289 | simple_if ELSE error
2290 { c_expand_end_cond (); }
2291 /* We must build the WHILE_STMT node before parsing its
2292 condition so that STMT_LINENO refers to the line
2293 containing the "while", and not the line containing
2294 the close-parenthesis.
2296 c_begin_while_stmt returns the WHILE_STMT node, which
2297 we later pass to c_finish_while_stmt_cond to fill
2298 in the condition and other tidbits. */
2301 $<ttype>$ = c_begin_while_stmt (); }
2303 { c_in_iteration_stmt++;
2304 $4 = c_common_truthvalue_conversion ($4);
2305 c_finish_while_stmt_cond
2306 (c_common_truthvalue_conversion ($4), $<ttype>2);
2307 $<ttype>$ = add_stmt ($<ttype>2); }
2308 c99_block_lineno_labeled_stmt
2309 { c_in_iteration_stmt--;
2310 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2313 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2314 | do_stmt_start error
2317 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2318 NULL_TREE, NULL_TREE);
2319 add_stmt ($<ttype>$); }
2322 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2325 FOR_COND ($<ttype>2)
2326 = c_common_truthvalue_conversion ($6); }
2328 { c_in_iteration_stmt++;
2329 FOR_EXPR ($<ttype>2) = $9; }
2330 c99_block_lineno_labeled_stmt
2331 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2332 c_in_iteration_stmt--;}
2333 | SWITCH '(' expr ')'
2335 $<ttype>$ = c_start_case ($3);
2337 c99_block_lineno_labeled_stmt
2344 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2346 { check_for_loop_decls (); }
2349 /* Parse a single real statement, not including any labels. */
2352 { stmt_count++; $$ = $1; }
2355 $$ = c_expand_expr_stmt ($1); }
2356 | c99_block_start select_or_iter_stmt c99_block_end
2358 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2362 if (!(c_in_iteration_stmt || c_in_case_stmt))
2364 error ("break statement not within loop or switch");
2368 $$ = add_stmt (build_break_stmt ()); }
2371 if (!c_in_iteration_stmt)
2373 error ("continue statement not within a loop");
2377 $$ = add_stmt (build_continue_stmt ()); }
2380 $$ = c_expand_return (NULL_TREE); }
2383 $$ = c_expand_return ($2); }
2384 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2386 $$ = simple_asm_stmt ($4); }
2387 /* This is the case with just output operands. */
2388 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2390 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2391 /* This is the case with input operands as well. */
2392 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2393 asm_operands ')' ';'
2395 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2396 /* This is the case with clobbered registers as well. */
2397 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2398 asm_operands ':' asm_clobbers ')' ';'
2400 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2401 | GOTO identifier ';'
2404 decl = lookup_label ($2);
2407 TREE_USED (decl) = 1;
2408 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2415 pedwarn ("ISO C forbids `goto *expr;'");
2417 $3 = convert (ptr_type_node, $3);
2418 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2424 $$ = objc_build_throw_stmt ($2);
2428 $$ = objc_build_throw_stmt (NULL_TREE);
2430 | objc_try_catch_stmt
2431 { objc_build_finally_prologue (); }
2433 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2434 | AT_SYNCHRONIZED '(' expr ')'
2435 { objc_build_synchronized_prologue ($3); }
2437 { $$ = objc_build_synchronized_epilogue (); }
2440 objc_try_catch_stmt:
2442 { objc_build_try_epilogue (1); }
2444 { objc_build_catch_epilogue (); $$ = 1; }
2446 { objc_build_try_epilogue (0); $$ = 0; }
2452 { objc_build_try_prologue (); }
2457 objc_catch_list objc_catch_block
2462 AT_CATCH '(' parm ')'
2463 { objc_build_catch_stmt ($3); }
2476 /* Any kind of label, including jump labels and case labels.
2477 ANSI C accepts labels only before statements, but we allow them
2478 also at the end of a compound statement. */
2480 label: CASE expr_no_commas ':'
2482 $$ = do_case ($2, NULL_TREE); }
2483 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2485 $$ = do_case ($2, $4); }
2488 $$ = do_case (NULL_TREE, NULL_TREE); }
2489 | identifier save_location ':' maybe_attribute
2490 { tree label = define_label ($2, $1);
2494 decl_attributes (&label, $4, 0);
2495 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2502 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2506 { emit_line_note (input_location);
2509 { emit_line_note (input_location); }
2518 /* These are the operands other than the first string and colon
2519 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2520 asm_operands: /* empty */
2522 | nonnull_asm_operands
2525 nonnull_asm_operands:
2527 | nonnull_asm_operands ',' asm_operand
2528 { $$ = chainon ($1, $3); }
2533 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2534 | '[' identifier ']' STRING '(' expr ')'
2535 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2536 IDENTIFIER_POINTER ($2));
2537 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2542 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2543 | asm_clobbers ',' STRING
2544 { $$ = tree_cons (NULL_TREE, $3, $1); }
2547 /* This is what appears inside the parens in a function declarator.
2548 Its value is a list of ..._TYPE nodes. Attributes must appear here
2549 to avoid a conflict with their appearance after an open parenthesis
2550 in an abstract declarator, as in
2551 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2555 declare_parm_level (); }
2558 poplevel (0, 0, 0); }
2564 { mark_forward_parm_decls (); }
2566 { /* Dummy action so attributes are in known place
2567 on parser stack. */ }
2571 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2574 /* This is what appears inside the parens in a function declarator.
2575 Is value is represented in the format that grokdeclarator expects. */
2576 parmlist_2: /* empty */
2577 { $$ = get_parm_info (0); }
2579 { $$ = get_parm_info (0);
2580 /* Gcc used to allow this as an extension. However, it does
2581 not work for all targets, and thus has been disabled.
2582 Also, since func (...) and func () are indistinguishable,
2583 it caused problems with the code in expand_builtin which
2584 tries to verify that BUILT_IN_NEXT_ARG is being used
2586 error ("ISO C requires a named argument before `...'");
2587 parsing_iso_function_signature = true;
2590 { $$ = get_parm_info (1);
2591 parsing_iso_function_signature = true;
2593 | parms ',' ELLIPSIS
2594 { $$ = get_parm_info (0);
2595 parsing_iso_function_signature = true;
2601 { push_parm_decl ($1); }
2603 { push_parm_decl ($3); }
2606 /* A single parameter declaration or parameter type name,
2607 as found in a parmlist. */
2609 declspecs_ts setspecs parm_declarator maybe_attribute
2610 { $$ = build_tree_list (build_tree_list (current_declspecs,
2612 chainon ($4, all_prefix_attributes));
2613 POP_DECLSPEC_STACK; }
2614 | declspecs_ts setspecs notype_declarator maybe_attribute
2615 { $$ = build_tree_list (build_tree_list (current_declspecs,
2617 chainon ($4, all_prefix_attributes));
2618 POP_DECLSPEC_STACK; }
2619 | declspecs_ts setspecs absdcl_maybe_attribute
2621 POP_DECLSPEC_STACK; }
2622 | declspecs_nots setspecs notype_declarator maybe_attribute
2623 { $$ = build_tree_list (build_tree_list (current_declspecs,
2625 chainon ($4, all_prefix_attributes));
2626 POP_DECLSPEC_STACK; }
2628 | declspecs_nots setspecs absdcl_maybe_attribute
2630 POP_DECLSPEC_STACK; }
2633 /* The first parm, which must suck attributes from off the top of the parser
2636 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2637 { $$ = build_tree_list (build_tree_list (current_declspecs,
2639 chainon ($4, all_prefix_attributes));
2640 POP_DECLSPEC_STACK; }
2641 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2642 { $$ = build_tree_list (build_tree_list (current_declspecs,
2644 chainon ($4, all_prefix_attributes));
2645 POP_DECLSPEC_STACK; }
2646 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2648 POP_DECLSPEC_STACK; }
2649 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2650 { $$ = build_tree_list (build_tree_list (current_declspecs,
2652 chainon ($4, all_prefix_attributes));
2653 POP_DECLSPEC_STACK; }
2655 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2657 POP_DECLSPEC_STACK; }
2662 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2663 all_prefix_attributes = prefix_attributes; }
2666 /* This is used in a function definition
2667 where either a parmlist or an identifier list is ok.
2668 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2669 parmlist_or_identifiers:
2672 declare_parm_level (); }
2673 parmlist_or_identifiers_1
2675 poplevel (0, 0, 0); }
2678 parmlist_or_identifiers_1:
2682 for (t = $1; t; t = TREE_CHAIN (t))
2683 if (TREE_VALUE (t) == NULL_TREE)
2684 error ("`...' in old-style identifier list");
2685 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2687 /* Make sure we have a parmlist after attributes. */
2689 && (TREE_CODE ($$) != TREE_LIST
2690 || TREE_PURPOSE ($$) == 0
2691 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2696 /* A nonempty list of identifiers. */
2699 { $$ = build_tree_list (NULL_TREE, $1); }
2700 | identifiers ',' IDENTIFIER
2701 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2704 /* A nonempty list of identifiers, including typenames. */
2705 identifiers_or_typenames:
2707 { $$ = build_tree_list (NULL_TREE, $1); }
2708 | identifiers_or_typenames ',' identifier
2709 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2714 { $$ = SAVE_EXT_FLAGS();
2716 warn_pointer_arith = 0;
2717 warn_traditional = 0;
2722 /* Objective-C productions. */
2732 if (objc_implementation_context)
2734 finish_class (objc_implementation_context);
2735 objc_ivar_chain = NULL_TREE;
2736 objc_implementation_context = NULL_TREE;
2739 warning ("`@end' must appear in an implementation context");
2743 /* A nonempty list of identifiers. */
2746 { $$ = build_tree_list (NULL_TREE, $1); }
2747 | identifier_list ',' identifier
2748 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2752 CLASS identifier_list ';'
2754 objc_declare_class ($2);
2759 ALIAS identifier identifier ';'
2761 objc_declare_alias ($2, $3);
2766 ':' identifier { $$ = $2; }
2767 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2771 '{' ivar_decl_list '}'
2776 INTERFACE identifier superclass protocolrefs
2778 objc_interface_context = objc_ivar_context
2779 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2780 objc_public_flag = 0;
2784 continue_class (objc_interface_context);
2788 finish_class (objc_interface_context);
2789 objc_interface_context = NULL_TREE;
2792 | IMPLEMENTATION identifier superclass
2794 objc_implementation_context = objc_ivar_context
2795 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2796 objc_public_flag = 0;
2801 = continue_class (objc_implementation_context);
2804 | INTERFACE identifier '(' identifier ')' protocolrefs
2806 objc_interface_context
2807 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2808 continue_class (objc_interface_context);
2812 finish_class (objc_interface_context);
2813 objc_interface_context = NULL_TREE;
2816 | IMPLEMENTATION identifier '(' identifier ')'
2818 objc_implementation_context
2819 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2821 = continue_class (objc_implementation_context);
2826 PROTOCOL identifier protocolrefs
2828 objc_pq_context = 1;
2829 objc_interface_context
2830 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2834 objc_pq_context = 0;
2835 finish_protocol(objc_interface_context);
2836 objc_interface_context = NULL_TREE;
2838 /* The @protocol forward-declaration production introduces a
2839 reduce/reduce conflict on ';', which should be resolved in
2840 favor of the production 'identifier_list -> identifier'. */
2841 | PROTOCOL identifier_list ';'
2843 objc_declare_protocols ($2);
2852 | non_empty_protocolrefs
2855 non_empty_protocolrefs:
2856 ARITHCOMPARE identifier_list ARITHCOMPARE
2858 if ($1 == LT_EXPR && $3 == GT_EXPR)
2866 ivar_decl_list visibility_spec ivar_decls
2871 PRIVATE { objc_public_flag = 2; }
2872 | PROTECTED { objc_public_flag = 0; }
2873 | PUBLIC { objc_public_flag = 1; }
2881 | ivar_decls ivar_decl ';'
2885 pedwarn ("extra semicolon in struct or union specified");
2890 /* There is a shift-reduce conflict here, because `components' may
2891 start with a `typename'. It happens that shifting (the default resolution)
2892 does the right thing, because it treats the `typename' as part of
2893 a `typed_typespecs'.
2895 It is possible that this same technique would allow the distinction
2896 between `notype_initdecls' and `initdecls' to be eliminated.
2897 But I am being cautious and not trying it. */
2900 declspecs_nosc_ts setspecs ivars
2902 POP_DECLSPEC_STACK; }
2903 | declspecs_nosc_nots setspecs ivars
2905 POP_DECLSPEC_STACK; }
2914 | ivars ',' maybe_resetattrs ivar_declarator
2920 $$ = add_instance_variable (objc_ivar_context,
2922 $1, current_declspecs,
2925 | declarator ':' expr_no_commas
2927 $$ = add_instance_variable (objc_ivar_context,
2929 $1, current_declspecs, $3);
2931 | ':' expr_no_commas
2933 $$ = add_instance_variable (objc_ivar_context,
2936 current_declspecs, $2);
2942 { objc_inherit_code = CLASS_METHOD_DECL; }
2944 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2950 objc_pq_context = 1;
2951 if (!objc_implementation_context)
2952 fatal_error ("method definition not in class context");
2956 objc_pq_context = 0;
2957 objc_add_method (objc_implementation_context,
2959 objc_inherit_code == CLASS_METHOD_DECL);
2960 start_method_def ($3);
2964 continue_method_def ();
2968 finish_method_def ();
2972 /* the reason for the strange actions in this rule
2973 is so that notype_initdecls when reached via datadef
2974 can find a valid list of type and sc specs in $0. */
2978 | methodprotolist methodproto
2979 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2990 /* Remember protocol qualifiers in prototypes. */
2991 objc_pq_context = 1;
2995 /* Forget protocol qualifiers here. */
2996 objc_pq_context = 0;
2997 objc_add_method (objc_interface_context,
2999 objc_inherit_code == CLASS_METHOD_DECL);
3005 '(' typename ')' unaryselector
3007 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3012 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3015 | '(' typename ')' keywordselector optparmlist
3017 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3020 | keywordselector optparmlist
3022 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3026 /* "optarglist" assumes that start_method_def has already been called...
3027 if it is not, the "xdecls" will not be placed in the proper scope */
3034 /* to get around the following situation: "int foo (int a) int b; {}" that
3035 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3050 declspecs_ts setspecs myparms ';'
3051 { POP_DECLSPEC_STACK; }
3053 { shadow_tag ($1); }
3054 | declspecs_nots ';'
3055 { pedwarn ("empty declaration"); }
3060 { push_parm_decl ($1); }
3061 | myparms ',' myparm
3062 { push_parm_decl ($3); }
3065 /* A single parameter declaration or parameter type name,
3066 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3069 parm_declarator maybe_attribute
3070 { $$ = build_tree_list (build_tree_list (current_declspecs,
3072 chainon ($2, all_prefix_attributes)); }
3073 | notype_declarator maybe_attribute
3074 { $$ = build_tree_list (build_tree_list (current_declspecs,
3076 chainon ($2, all_prefix_attributes)); }
3077 | absdcl_maybe_attribute
3088 /* oh what a kludge! */
3089 $$ = objc_ellipsis_node;
3097 /* returns a tree list node generated by get_parm_info */
3110 | keywordselector keyworddecl
3112 $$ = chainon ($1, $2);
3125 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3126 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3127 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3128 | TYPESPEC | TYPE_QUAL
3132 selector ':' '(' typename ')' identifier
3134 $$ = build_keyword_decl ($1, $4, $6);
3137 | selector ':' identifier
3139 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3142 | ':' '(' typename ')' identifier
3144 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3149 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3160 | keywordarglist keywordarg
3162 $$ = chainon ($1, $2);
3170 if (TREE_CHAIN ($1) == NULL_TREE)
3171 /* just return the expr., remove a level of indirection */
3172 $$ = TREE_VALUE ($1);
3174 /* we have a comma expr., we will collapse later */
3180 selector ':' keywordexpr
3182 $$ = build_tree_list ($1, $3);
3186 $$ = build_tree_list (NULL_TREE, $2);
3194 $$ = get_class_reference ($1);
3198 $$ = get_class_reference ($1);
3203 '[' receiver messageargs ']'
3204 { $$ = build_tree_list ($2, $3); }
3214 | keywordnamelist keywordname
3216 $$ = chainon ($1, $2);
3223 $$ = build_tree_list ($1, NULL_TREE);
3227 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3232 SELECTOR '(' selectorarg ')'
3239 PROTOCOL '(' identifier ')'
3245 /* extension to support C-structures in the archiver */
3248 ENCODE '(' typename ')'
3250 $$ = groktypename ($3);
3257 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3258 cpplib.h's token codes into yacc's token codes. */
3260 static enum cpp_ttype last_token;
3262 /* The reserved keyword table. */
3266 ENUM_BITFIELD(rid) rid : 16;
3267 unsigned int disable : 16;
3270 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3272 #define D_C89 0x01 /* not in C89 */
3273 #define D_EXT 0x02 /* GCC extension */
3274 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3275 #define D_OBJC 0x08 /* Objective C only */
3277 static const struct resword reswords[] =
3279 { "_Bool", RID_BOOL, 0 },
3280 { "_Complex", RID_COMPLEX, 0 },
3281 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3282 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3283 { "__alignof", RID_ALIGNOF, 0 },
3284 { "__alignof__", RID_ALIGNOF, 0 },
3285 { "__asm", RID_ASM, 0 },
3286 { "__asm__", RID_ASM, 0 },
3287 { "__attribute", RID_ATTRIBUTE, 0 },
3288 { "__attribute__", RID_ATTRIBUTE, 0 },
3289 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3290 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3291 { "__builtin_va_arg", RID_VA_ARG, 0 },
3292 { "__complex", RID_COMPLEX, 0 },
3293 { "__complex__", RID_COMPLEX, 0 },
3294 { "__const", RID_CONST, 0 },
3295 { "__const__", RID_CONST, 0 },
3296 { "__extension__", RID_EXTENSION, 0 },
3297 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3298 { "__imag", RID_IMAGPART, 0 },
3299 { "__imag__", RID_IMAGPART, 0 },
3300 { "__inline", RID_INLINE, 0 },
3301 { "__inline__", RID_INLINE, 0 },
3302 { "__label__", RID_LABEL, 0 },
3303 { "__ptrbase", RID_PTRBASE, 0 },
3304 { "__ptrbase__", RID_PTRBASE, 0 },
3305 { "__ptrextent", RID_PTREXTENT, 0 },
3306 { "__ptrextent__", RID_PTREXTENT, 0 },
3307 { "__ptrvalue", RID_PTRVALUE, 0 },
3308 { "__ptrvalue__", RID_PTRVALUE, 0 },
3309 { "__real", RID_REALPART, 0 },
3310 { "__real__", RID_REALPART, 0 },
3311 { "__restrict", RID_RESTRICT, 0 },
3312 { "__restrict__", RID_RESTRICT, 0 },
3313 { "__signed", RID_SIGNED, 0 },
3314 { "__signed__", RID_SIGNED, 0 },
3315 { "__thread", RID_THREAD, 0 },
3316 { "__typeof", RID_TYPEOF, 0 },
3317 { "__typeof__", RID_TYPEOF, 0 },
3318 { "__volatile", RID_VOLATILE, 0 },
3319 { "__volatile__", RID_VOLATILE, 0 },
3320 { "asm", RID_ASM, D_EXT },
3321 { "auto", RID_AUTO, 0 },
3322 { "break", RID_BREAK, 0 },
3323 { "case", RID_CASE, 0 },
3324 { "char", RID_CHAR, 0 },
3325 { "const", RID_CONST, 0 },
3326 { "continue", RID_CONTINUE, 0 },
3327 { "default", RID_DEFAULT, 0 },
3328 { "do", RID_DO, 0 },
3329 { "double", RID_DOUBLE, 0 },
3330 { "else", RID_ELSE, 0 },
3331 { "enum", RID_ENUM, 0 },
3332 { "extern", RID_EXTERN, 0 },
3333 { "float", RID_FLOAT, 0 },
3334 { "for", RID_FOR, 0 },
3335 { "goto", RID_GOTO, 0 },
3336 { "if", RID_IF, 0 },
3337 { "inline", RID_INLINE, D_EXT89 },
3338 { "int", RID_INT, 0 },
3339 { "long", RID_LONG, 0 },
3340 { "register", RID_REGISTER, 0 },
3341 { "restrict", RID_RESTRICT, D_C89 },
3342 { "return", RID_RETURN, 0 },
3343 { "short", RID_SHORT, 0 },
3344 { "signed", RID_SIGNED, 0 },
3345 { "sizeof", RID_SIZEOF, 0 },
3346 { "static", RID_STATIC, 0 },
3347 { "struct", RID_STRUCT, 0 },
3348 { "switch", RID_SWITCH, 0 },
3349 { "typedef", RID_TYPEDEF, 0 },
3350 { "typeof", RID_TYPEOF, D_EXT },
3351 { "union", RID_UNION, 0 },
3352 { "unsigned", RID_UNSIGNED, 0 },
3353 { "void", RID_VOID, 0 },
3354 { "volatile", RID_VOLATILE, 0 },
3355 { "while", RID_WHILE, 0 },
3357 { "id", RID_ID, D_OBJC },
3359 /* These objc keywords are recognized only immediately after
3361 { "class", RID_AT_CLASS, D_OBJC },
3362 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3363 { "defs", RID_AT_DEFS, D_OBJC },
3364 { "encode", RID_AT_ENCODE, D_OBJC },
3365 { "end", RID_AT_END, D_OBJC },
3366 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3367 { "interface", RID_AT_INTERFACE, D_OBJC },
3368 { "private", RID_AT_PRIVATE, D_OBJC },
3369 { "protected", RID_AT_PROTECTED, D_OBJC },
3370 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3371 { "public", RID_AT_PUBLIC, D_OBJC },
3372 { "selector", RID_AT_SELECTOR, D_OBJC },
3373 { "throw", RID_AT_THROW, D_OBJC },
3374 { "try", RID_AT_TRY, D_OBJC },
3375 { "catch", RID_AT_CATCH, D_OBJC },
3376 { "finally", RID_AT_FINALLY, D_OBJC },
3377 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3378 /* These are recognized only in protocol-qualifier context
3380 { "bycopy", RID_BYCOPY, D_OBJC },
3381 { "byref", RID_BYREF, D_OBJC },
3382 { "in", RID_IN, D_OBJC },
3383 { "inout", RID_INOUT, D_OBJC },
3384 { "oneway", RID_ONEWAY, D_OBJC },
3385 { "out", RID_OUT, D_OBJC },
3388 #define N_reswords (sizeof reswords / sizeof (struct resword))
3390 /* Table mapping from RID_* constants to yacc token numbers.
3391 Unfortunately we have to have entries for all the keywords in all
3393 static const short rid_to_yy[RID_MAX] =
3395 /* RID_STATIC */ STATIC,
3396 /* RID_UNSIGNED */ TYPESPEC,
3397 /* RID_LONG */ TYPESPEC,
3398 /* RID_CONST */ TYPE_QUAL,
3399 /* RID_EXTERN */ SCSPEC,
3400 /* RID_REGISTER */ SCSPEC,
3401 /* RID_TYPEDEF */ SCSPEC,
3402 /* RID_SHORT */ TYPESPEC,
3403 /* RID_INLINE */ SCSPEC,
3404 /* RID_VOLATILE */ TYPE_QUAL,
3405 /* RID_SIGNED */ TYPESPEC,
3406 /* RID_AUTO */ SCSPEC,
3407 /* RID_RESTRICT */ TYPE_QUAL,
3410 /* RID_COMPLEX */ TYPESPEC,
3411 /* RID_THREAD */ SCSPEC,
3415 /* RID_VIRTUAL */ 0,
3416 /* RID_EXPLICIT */ 0,
3418 /* RID_MUTABLE */ 0,
3421 /* RID_IN */ TYPE_QUAL,
3422 /* RID_OUT */ TYPE_QUAL,
3423 /* RID_INOUT */ TYPE_QUAL,
3424 /* RID_BYCOPY */ TYPE_QUAL,
3425 /* RID_BYREF */ TYPE_QUAL,
3426 /* RID_ONEWAY */ TYPE_QUAL,
3429 /* RID_INT */ TYPESPEC,
3430 /* RID_CHAR */ TYPESPEC,
3431 /* RID_FLOAT */ TYPESPEC,
3432 /* RID_DOUBLE */ TYPESPEC,
3433 /* RID_VOID */ TYPESPEC,
3434 /* RID_ENUM */ ENUM,
3435 /* RID_STRUCT */ STRUCT,
3436 /* RID_UNION */ UNION,
3438 /* RID_ELSE */ ELSE,
3439 /* RID_WHILE */ WHILE,
3442 /* RID_SWITCH */ SWITCH,
3443 /* RID_CASE */ CASE,
3444 /* RID_DEFAULT */ DEFAULT,
3445 /* RID_BREAK */ BREAK,
3446 /* RID_CONTINUE */ CONTINUE,
3447 /* RID_RETURN */ RETURN,
3448 /* RID_GOTO */ GOTO,
3449 /* RID_SIZEOF */ SIZEOF,
3452 /* RID_ASM */ ASM_KEYWORD,
3453 /* RID_TYPEOF */ TYPEOF,
3454 /* RID_ALIGNOF */ ALIGNOF,
3455 /* RID_ATTRIBUTE */ ATTRIBUTE,
3456 /* RID_VA_ARG */ VA_ARG,
3457 /* RID_EXTENSION */ EXTENSION,
3458 /* RID_IMAGPART */ IMAGPART,
3459 /* RID_REALPART */ REALPART,
3460 /* RID_LABEL */ LABEL,
3461 /* RID_PTRBASE */ PTR_BASE,
3462 /* RID_PTREXTENT */ PTR_EXTENT,
3463 /* RID_PTRVALUE */ PTR_VALUE,
3465 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3466 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3468 /* RID_FUNCTION_NAME */ FUNC_NAME,
3469 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3470 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3473 /* RID_BOOL */ TYPESPEC,
3477 /* RID_PRIVATE */ 0,
3478 /* RID_PROTECTED */ 0,
3479 /* RID_TEMPLATE */ 0,
3484 /* RID_NAMESPACE */ 0,
3486 /* RID_OPERATOR */ 0,
3491 /* RID_TYPENAME */ 0,
3496 /* RID_CONSTCAST */ 0,
3497 /* RID_DYNCAST */ 0,
3498 /* RID_REINTCAST */ 0,
3499 /* RID_STATCAST */ 0,
3502 /* RID_ID */ OBJECTNAME,
3503 /* RID_AT_ENCODE */ ENCODE,
3504 /* RID_AT_END */ END,
3505 /* RID_AT_CLASS */ CLASS,
3506 /* RID_AT_ALIAS */ ALIAS,
3507 /* RID_AT_DEFS */ DEFS,
3508 /* RID_AT_PRIVATE */ PRIVATE,
3509 /* RID_AT_PROTECTED */ PROTECTED,
3510 /* RID_AT_PUBLIC */ PUBLIC,
3511 /* RID_AT_PROTOCOL */ PROTOCOL,
3512 /* RID_AT_SELECTOR */ SELECTOR,
3513 /* RID_AT_THROW */ AT_THROW,
3514 /* RID_AT_TRY */ AT_TRY,
3515 /* RID_AT_CATCH */ AT_CATCH,
3516 /* RID_AT_FINALLY */ AT_FINALLY,
3517 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3518 /* RID_AT_INTERFACE */ INTERFACE,
3519 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3523 init_reswords (void)
3527 int mask = (flag_isoc99 ? 0 : D_C89)
3528 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3530 if (!c_dialect_objc ())
3533 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3534 for (i = 0; i < N_reswords; i++)
3536 /* If a keyword is disabled, do not enter it into the table
3537 and so create a canonical spelling that isn't a keyword. */
3538 if (reswords[i].disable & mask)
3541 id = get_identifier (reswords[i].word);
3542 C_RID_CODE (id) = reswords[i].rid;
3543 C_IS_RESERVED_WORD (id) = 1;
3544 ridpointers [(int) reswords[i].rid] = id;
3548 #define NAME(type) cpp_type2name (type)
3551 yyerror (const char *msgid)
3553 const char *string = _(msgid);
3555 if (last_token == CPP_EOF)
3556 error ("%s at end of input", string);
3557 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3559 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3560 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3561 if (val <= UCHAR_MAX && ISGRAPH (val))
3562 error ("%s before %s'%c'", string, ell, val);
3564 error ("%s before %s'\\x%x'", string, ell, val);
3566 else if (last_token == CPP_STRING
3567 || last_token == CPP_WSTRING)
3568 error ("%s before string constant", string);
3569 else if (last_token == CPP_NUMBER)
3570 error ("%s before numeric constant", string);
3571 else if (last_token == CPP_NAME)
3572 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3574 error ("%s before '%s' token", string, NAME(last_token));
3583 int objc_force_identifier = objc_need_raw_identifier;
3584 OBJC_NEED_RAW_IDENTIFIER (0);
3587 if (C_IS_RESERVED_WORD (yylval.ttype))
3589 enum rid rid_code = C_RID_CODE (yylval.ttype);
3592 /* Turn non-typedefed refs to "id" into plain identifiers; this
3593 allows constructs like "void foo(id id);" to work. */
3594 if (rid_code == RID_ID)
3596 decl = lookup_name (yylval.ttype);
3597 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3601 if (!OBJC_IS_AT_KEYWORD (rid_code)
3602 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3605 /* Return the canonical spelling for this keyword. */
3606 yylval.ttype = ridpointers[(int) rid_code];
3607 return rid_to_yy[(int) rid_code];
3611 decl = lookup_name (yylval.ttype);
3614 if (TREE_CODE (decl) == TYPE_DECL)
3620 tree objc_interface_decl = is_class_name (yylval.ttype);
3621 /* ObjC class names are in the same namespace as variables and
3622 typedefs, and hence are shadowed by local declarations. */
3623 if (objc_interface_decl
3624 && (global_bindings_p ()
3625 || (!objc_force_identifier && !decl)))
3627 yylval.ttype = objc_interface_decl;
3640 last_token = c_lex (&yylval.ttype);
3643 case CPP_EQ: return '=';
3644 case CPP_NOT: return '!';
3645 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3646 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3647 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3648 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3649 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3650 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3651 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3652 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3653 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3654 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3655 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3656 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3658 case CPP_COMPL: return '~';
3659 case CPP_AND_AND: return ANDAND;
3660 case CPP_OR_OR: return OROR;
3661 case CPP_QUERY: return '?';
3662 case CPP_OPEN_PAREN: return '(';
3663 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3664 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3665 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3666 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3668 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3669 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3670 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3671 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3672 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3673 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3674 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3675 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3676 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3677 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3679 case CPP_OPEN_SQUARE: return '[';
3680 case CPP_CLOSE_SQUARE: return ']';
3681 case CPP_OPEN_BRACE: return '{';
3682 case CPP_CLOSE_BRACE: return '}';
3683 case CPP_ELLIPSIS: return ELLIPSIS;
3685 case CPP_PLUS_PLUS: return PLUSPLUS;
3686 case CPP_MINUS_MINUS: return MINUSMINUS;
3687 case CPP_DEREF: return POINTSAT;
3688 case CPP_DOT: return '.';
3690 /* The following tokens may affect the interpretation of any
3691 identifiers following, if doing Objective-C. */
3692 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3693 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3694 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3695 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3701 return yylexname ();
3704 /* This only happens in Objective-C; it must be a keyword. */
3705 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3716 case CPP_OBJC_STRING:
3719 /* These tokens are C++ specific (and will not be generated
3720 in C mode, but let's be cautious). */
3722 case CPP_DEREF_STAR:
3728 /* These tokens should not survive translation phase 4. */
3731 error ("syntax error at '%s' token", NAME(last_token));
3744 timevar_push (TV_LEX);
3746 timevar_pop (TV_LEX);
3750 /* Function used when yydebug is set, to print a token in more detail. */
3753 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3757 fprintf (file, " [%s]", NAME(last_token));
3768 if (IDENTIFIER_POINTER (t))
3769 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3773 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3774 if (TREE_CODE (t) == INTEGER_CST)
3777 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3778 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3784 /* This is not the ideal place to put these, but we have to get them out
3785 of c-lex.c because cp/lex.c has its own versions. */
3787 /* Free malloced parser stacks if necessary. */
3790 free_parser_stacks (void)
3794 /* Parse the file. */
3799 /* In case there were missing closebraces, get us back to the global
3801 while (! global_bindings_p ())
3803 /* __FUNCTION__ is defined at file scope (""). This
3804 call may not be necessary as my tests indicate it
3805 still works without it. */
3806 finish_fname_decls ();
3810 free (malloced_yyss);
3811 free (malloced_yyvs);
3816 #include "gt-c-parse.h"