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
181 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
182 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
184 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
185 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
186 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
187 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
188 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
189 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
190 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
191 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
192 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
193 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
194 %type <ttype> declspecs_ts declspecs_nots
195 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
196 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
197 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
198 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
199 %type <ttype> typespec_nonreserved_nonattr
201 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
202 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
203 %type <ttype> init maybeasm
204 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
205 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
206 %type <ttype> any_word extension
208 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
209 %type <ttype> do_stmt_start poplevel stmt label
211 %type <ttype> c99_block_start c99_block_end
212 %type <ttype> declarator
213 %type <ttype> notype_declarator after_type_declarator
214 %type <ttype> parm_declarator
215 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
216 %type <ttype> array_declarator
218 %type <ttype> structsp_attr structsp_nonattr
219 %type <ttype> component_decl_list component_decl_list2
220 %type <ttype> component_decl components components_notype component_declarator
221 %type <ttype> component_notype_declarator
222 %type <ttype> enumlist enumerator
223 %type <ttype> struct_head union_head enum_head
224 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
225 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
226 %type <ttype> xexpr parms parm firstparm identifiers
228 %type <ttype> parmlist parmlist_1 parmlist_2
229 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
230 %type <ttype> identifiers_or_typenames
232 %type <itype> setspecs setspecs_fp
234 %type <location> save_location
237 /* the Objective-C nonterminals */
239 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
240 %type <ttype> methoddecl unaryselector keywordselector selector
241 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
242 %type <ttype> keywordexpr keywordarglist keywordarg
243 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
244 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
245 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
247 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
251 /* Number of statements (loosely speaking) and compound statements
253 static int stmt_count;
254 static int compstmt_count;
256 /* Input location of the end of the body of last simple_if;
257 used by the stmt-rule immediately after simple_if returns. */
258 static location_t if_stmt_locus;
261 /* List of types and structure classes of the current declaration. */
262 static GTY(()) tree current_declspecs;
263 static GTY(()) tree prefix_attributes;
265 /* List of all the attributes applying to the identifier currently being
266 declared; includes prefix_attributes and possibly some more attributes
267 just after a comma. */
268 static GTY(()) tree all_prefix_attributes;
270 /* Stack of saved values of current_declspecs, prefix_attributes and
271 all_prefix_attributes. */
272 static GTY(()) tree declspec_stack;
274 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
275 should be called from the productions making use of setspecs. */
276 #define PUSH_DECLSPEC_STACK \
278 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
279 all_prefix_attributes), \
284 #define POP_DECLSPEC_STACK \
286 current_declspecs = TREE_VALUE (declspec_stack); \
287 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
288 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
289 declspec_stack = TREE_CHAIN (declspec_stack); \
292 /* For __extension__, save/restore the warning flags which are
293 controlled by __extension__. */
294 #define SAVE_EXT_FLAGS() \
296 | (warn_pointer_arith << 1) \
297 | (warn_traditional << 2) \
300 #define RESTORE_EXT_FLAGS(tval) \
302 int val = tree_low_cst (tval, 0); \
303 pedantic = val & 1; \
304 warn_pointer_arith = (val >> 1) & 1; \
305 warn_traditional = (val >> 2) & 1; \
306 flag_iso = (val >> 3) & 1; \
310 /* Objective-C specific parser/lexer information */
312 static enum tree_code objc_inherit_code;
313 static int objc_pq_context = 0, objc_public_flag = 0;
315 /* The following flag is needed to contextualize ObjC lexical analysis.
316 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
317 an identifier to an ObjC class, even if a class with that name
319 static int objc_need_raw_identifier;
320 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
327 static bool parsing_iso_function_signature;
329 /* Tell yyparse how to print a token's value, if yydebug is set. */
331 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
333 static void yyprint (FILE *, int, YYSTYPE);
334 static void yyerror (const char *);
335 static int yylexname (void);
336 static inline int _yylex (void);
337 static int yylex (void);
338 static void init_reswords (void);
340 /* Initialisation routine for this file. */
352 pedwarn ("ISO C forbids an empty source file");
357 /* the reason for the strange actions in this rule
358 is so that notype_initdecls when reached via datadef
359 can find a valid list of type and sc specs in $0. */
362 {$<ttype>$ = NULL_TREE; } extdef
363 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
368 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
377 | ASM_KEYWORD '(' expr ')' ';'
379 if ((TREE_CODE ($3) == ADDR_EXPR
380 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
381 || TREE_CODE ($3) == STRING_CST)
384 error ("argument of `asm' is not a constant string"); }
386 { RESTORE_EXT_FLAGS ($1); }
390 setspecs notype_initdecls ';'
392 error ("ISO C forbids data definition with no type or storage class");
394 warning ("data definition has no type or storage class");
396 POP_DECLSPEC_STACK; }
397 | declspecs_nots setspecs notype_initdecls ';'
398 { POP_DECLSPEC_STACK; }
399 | declspecs_ts setspecs initdecls ';'
400 { POP_DECLSPEC_STACK; }
407 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
411 declspecs_ts setspecs declarator
412 { if (! start_function (current_declspecs, $3,
413 all_prefix_attributes))
416 old_style_parm_decls save_location
417 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
418 store_parm_decls (); }
420 { finish_function (0, 1);
421 POP_DECLSPEC_STACK; }
422 | declspecs_ts setspecs declarator error
423 { POP_DECLSPEC_STACK; }
424 | declspecs_nots setspecs notype_declarator
425 { if (! start_function (current_declspecs, $3,
426 all_prefix_attributes))
429 old_style_parm_decls save_location
430 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
431 store_parm_decls (); }
433 { finish_function (0, 1);
434 POP_DECLSPEC_STACK; }
435 | declspecs_nots setspecs notype_declarator error
436 { POP_DECLSPEC_STACK; }
437 | setspecs notype_declarator
438 { if (! start_function (NULL_TREE, $2,
439 all_prefix_attributes))
442 old_style_parm_decls save_location
443 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
444 store_parm_decls (); }
446 { finish_function (0, 1);
447 POP_DECLSPEC_STACK; }
448 | setspecs notype_declarator error
449 { POP_DECLSPEC_STACK; }
464 { $$ = NEGATE_EXPR; }
468 if (warn_traditional && !in_system_header)
469 warning ("traditional C rejects the unary plus operator");
473 { $$ = PREINCREMENT_EXPR; }
475 { $$ = PREDECREMENT_EXPR; }
477 { $$ = BIT_NOT_EXPR; }
479 { $$ = TRUTH_NOT_EXPR; }
482 expr: nonnull_exprlist
483 { $$ = build_compound_expr ($1); }
494 { $$ = build_tree_list (NULL_TREE, $1); }
495 | nonnull_exprlist ',' expr_no_commas
496 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
501 | '*' cast_expr %prec UNARY
502 { $$ = build_indirect_ref ($2, "unary *"); }
503 /* __extension__ turns off -pedantic for following primary. */
504 | extension cast_expr %prec UNARY
506 RESTORE_EXT_FLAGS ($1); }
507 | unop cast_expr %prec UNARY
508 { $$ = build_unary_op ($1, $2, 0);
509 overflow_warning ($$); }
510 /* Refer to the address of a label as a pointer. */
512 { $$ = finish_label_address_expr ($2); }
513 | sizeof unary_expr %prec UNARY
515 if (TREE_CODE ($2) == COMPONENT_REF
516 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
517 error ("`sizeof' applied to a bit-field");
518 $$ = c_sizeof (TREE_TYPE ($2)); }
519 | sizeof '(' typename ')' %prec HYPERUNARY
521 $$ = c_sizeof (groktypename ($3)); }
522 | alignof unary_expr %prec UNARY
524 $$ = c_alignof_expr ($2); }
525 | alignof '(' typename ')' %prec HYPERUNARY
527 $$ = c_alignof (groktypename ($3)); }
528 | REALPART cast_expr %prec UNARY
529 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
530 | IMAGPART cast_expr %prec UNARY
531 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
535 SIZEOF { skip_evaluation++; }
539 ALIGNOF { skip_evaluation++; }
543 TYPEOF { skip_evaluation++; }
548 | '(' typename ')' cast_expr %prec UNARY
549 { $$ = c_cast_expr ($2, $4); }
554 | expr_no_commas '+' expr_no_commas
555 { $$ = parser_build_binary_op ($2, $1, $3); }
556 | expr_no_commas '-' expr_no_commas
557 { $$ = parser_build_binary_op ($2, $1, $3); }
558 | expr_no_commas '*' expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas '/' expr_no_commas
561 { $$ = parser_build_binary_op ($2, $1, $3); }
562 | expr_no_commas '%' expr_no_commas
563 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas LSHIFT expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas RSHIFT expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas ARITHCOMPARE expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas EQCOMPARE expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas '&' expr_no_commas
573 { $$ = parser_build_binary_op ($2, $1, $3); }
574 | expr_no_commas '|' expr_no_commas
575 { $$ = parser_build_binary_op ($2, $1, $3); }
576 | expr_no_commas '^' expr_no_commas
577 { $$ = parser_build_binary_op ($2, $1, $3); }
578 | expr_no_commas ANDAND
579 { $1 = c_common_truthvalue_conversion
580 (default_conversion ($1));
581 skip_evaluation += $1 == truthvalue_false_node; }
583 { skip_evaluation -= $1 == truthvalue_false_node;
584 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
585 | expr_no_commas OROR
586 { $1 = c_common_truthvalue_conversion
587 (default_conversion ($1));
588 skip_evaluation += $1 == truthvalue_true_node; }
590 { skip_evaluation -= $1 == truthvalue_true_node;
591 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
593 { $1 = c_common_truthvalue_conversion
594 (default_conversion ($1));
595 skip_evaluation += $1 == truthvalue_false_node; }
597 { skip_evaluation += (($1 == truthvalue_true_node)
598 - ($1 == truthvalue_false_node)); }
600 { skip_evaluation -= $1 == truthvalue_true_node;
601 $$ = build_conditional_expr ($1, $4, $7); }
604 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
605 /* Make sure first operand is calculated only once. */
606 $<ttype>2 = save_expr ($1);
607 $1 = c_common_truthvalue_conversion
608 (default_conversion ($<ttype>2));
609 skip_evaluation += $1 == truthvalue_true_node; }
611 { skip_evaluation -= $1 == truthvalue_true_node;
612 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
613 | expr_no_commas '=' expr_no_commas
615 $$ = build_modify_expr ($1, NOP_EXPR, $3);
616 class = TREE_CODE_CLASS (TREE_CODE ($$));
617 if (IS_EXPR_CODE_CLASS (class))
618 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
620 | expr_no_commas ASSIGN expr_no_commas
622 $$ = build_modify_expr ($1, $2, $3);
623 /* This inhibits warnings in
624 c_common_truthvalue_conversion. */
625 class = TREE_CODE_CLASS (TREE_CODE ($$));
626 if (IS_EXPR_CODE_CLASS (class))
627 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
634 if (yychar == YYEMPTY)
636 $$ = build_external_ref ($1, yychar == '(');
641 { $$ = fname_decl (C_RID_CODE ($$), $$); }
642 | '(' typename ')' '{'
643 { start_init (NULL_TREE, NULL, 0);
644 $2 = groktypename ($2);
645 really_start_incremental_init ($2); }
646 initlist_maybe_comma '}' %prec UNARY
647 { tree constructor = pop_init_level (0);
651 if (pedantic && ! flag_isoc99)
652 pedwarn ("ISO C89 forbids compound literals");
653 $$ = build_compound_literal (type, constructor);
656 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
657 if (IS_EXPR_CODE_CLASS (class))
658 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
661 { $$ = error_mark_node; }
662 | compstmt_primary_start compstmt_nostart ')'
663 { tree saved_last_tree;
666 pedwarn ("ISO C forbids braced-groups within expressions");
667 saved_last_tree = COMPOUND_BODY ($1);
668 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
669 last_tree = saved_last_tree;
670 TREE_CHAIN (last_tree) = NULL_TREE;
672 last_expr_type = void_type_node;
673 $$ = build1 (STMT_EXPR, last_expr_type, $1);
674 TREE_SIDE_EFFECTS ($$) = 1;
676 | compstmt_primary_start error ')'
678 last_tree = COMPOUND_BODY ($1);
679 TREE_CHAIN (last_tree) = NULL_TREE;
680 $$ = error_mark_node;
682 | primary '(' exprlist ')' %prec '.'
683 { $$ = build_function_call ($1, $3); }
684 | VA_ARG '(' expr_no_commas ',' typename ')'
685 { $$ = build_va_arg ($3, groktypename ($5)); }
687 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
693 if (TREE_CODE (c) != INTEGER_CST)
694 error ("first argument to __builtin_choose_expr not a constant");
695 $$ = integer_zerop (c) ? $7 : $5;
697 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
701 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
702 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
704 $$ = comptypes (e1, e2, COMPARE_STRICT)
705 ? build_int_2 (1, 0) : build_int_2 (0, 0);
707 | primary '[' expr ']' %prec '.'
708 { $$ = build_array_ref ($1, $3); }
709 | primary '.' identifier
712 if (!is_public ($1, $3))
713 $$ = error_mark_node;
716 $$ = build_component_ref ($1, $3);
718 | primary POINTSAT identifier
720 tree expr = build_indirect_ref ($1, "->");
723 if (!is_public (expr, $3))
724 $$ = error_mark_node;
727 $$ = build_component_ref (expr, $3);
730 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
732 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
735 { $$ = build_message_expr ($1); }
737 { $$ = build_selector_expr ($1); }
739 { $$ = build_protocol_expr ($1); }
741 { $$ = build_encode_expr ($1); }
743 { $$ = build_objc_string_object ($1); }
747 old_style_parm_decls:
748 old_style_parm_decls_1
750 parsing_iso_function_signature = false; /* Reset after decls. */
754 old_style_parm_decls_1:
757 if (warn_traditional && !in_system_header
758 && parsing_iso_function_signature)
759 warning ("traditional C rejects ISO C style function definitions");
760 parsing_iso_function_signature = false; /* Reset after warning. */
765 /* The following are analogous to lineno_decl, decls and decl
766 except that they do not allow nested functions.
767 They are used for old-style parm decls. */
769 save_location datadecl
776 | datadecls lineno_datadecl
777 | lineno_datadecl errstmt
780 /* We don't allow prefix attributes here because they cause reduce/reduce
781 conflicts: we can't know whether we're parsing a function decl with
782 attribute suffix, or function defn with attribute prefix on first old
785 declspecs_ts_nosa setspecs initdecls ';'
786 { POP_DECLSPEC_STACK; }
787 | declspecs_nots_nosa setspecs notype_initdecls ';'
788 { POP_DECLSPEC_STACK; }
789 | declspecs_ts_nosa ';'
790 { shadow_tag_warned ($1, 1);
791 pedwarn ("empty declaration"); }
792 | declspecs_nots_nosa ';'
793 { pedwarn ("empty declaration"); }
796 /* This combination which saves a lineno before a decl
797 is the normal thing to use, rather than decl itself.
798 This is to avoid shift/reduce conflicts in contexts
799 where statement labels are allowed. */
805 /* records the type and storage class specs to use for processing
806 the declarators that follow.
807 Maintains a stack of outer-level values of current_declspecs,
808 for the sake of parm declarations nested in function declarators. */
809 setspecs: /* empty */
810 { pending_xref_error ();
812 split_specs_attrs ($<ttype>0,
813 ¤t_declspecs, &prefix_attributes);
814 all_prefix_attributes = prefix_attributes; }
817 /* Possibly attributes after a comma, which should reset all_prefix_attributes
818 to prefix_attributes with these ones chained on the front. */
821 { all_prefix_attributes = chainon ($1, prefix_attributes); }
825 declspecs_ts setspecs initdecls ';'
826 { POP_DECLSPEC_STACK; }
827 | declspecs_nots setspecs notype_initdecls ';'
828 { POP_DECLSPEC_STACK; }
829 | declspecs_ts setspecs nested_function
830 { POP_DECLSPEC_STACK; }
831 | declspecs_nots setspecs notype_nested_function
832 { POP_DECLSPEC_STACK; }
836 { RESTORE_EXT_FLAGS ($1); }
839 /* A list of declaration specifiers. These are:
841 - Storage class specifiers (scspec), which for GCC currently includes
842 function specifiers ("inline").
844 - Type specifiers (typespec_*).
846 - Type qualifiers (TYPE_QUAL).
848 - Attribute specifier lists (attributes).
850 These are stored as a TREE_LIST; the head of the list is the last
851 item in the specifier list. Each entry in the list has either a
852 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
853 is a single other specifier or qualifier; and a TREE_CHAIN that is the
854 rest of the list. TREE_STATIC is set on the list if something other
855 than a storage class specifier or attribute has been seen; this is used
856 to warn for the obsolescent usage of storage class specifiers other than
857 at the start of the list. (Doing this properly would require function
858 specifiers to be handled separately from storage class specifiers.)
860 The various cases below are classified according to:
862 (a) Whether a storage class specifier is included or not; some
863 places in the grammar disallow storage class specifiers (_sc or _nosc).
865 (b) Whether a type specifier has been seen; after a type specifier,
866 a typedef name is an identifier to redeclare (_ts or _nots).
868 (c) Whether the list starts with an attribute; in certain places,
869 the grammar requires specifiers that don't start with an attribute
872 (d) Whether the list ends with an attribute (or a specifier such that
873 any following attribute would have been parsed as part of that specifier);
874 this avoids shift-reduce conflicts in the parsing of attributes
879 (i) Distinguish between function specifiers and storage class specifiers,
880 at least for the purpose of warnings about obsolescent usage.
882 (ii) Halve the number of productions here by eliminating the _sc/_nosc
883 distinction and instead checking where required that storage class
884 specifiers aren't present. */
886 /* Declspecs which contain at least one type specifier or typedef name.
887 (Just `const' or `volatile' is not enough.)
888 A typedef'd name following these is taken as a name to be declared.
889 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
891 declspecs_nosc_nots_nosa_noea:
893 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
894 TREE_STATIC ($$) = 1; }
895 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
896 { $$ = tree_cons (NULL_TREE, $2, $1);
897 TREE_STATIC ($$) = 1; }
898 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
899 { $$ = tree_cons (NULL_TREE, $2, $1);
900 TREE_STATIC ($$) = 1; }
903 declspecs_nosc_nots_nosa_ea:
904 declspecs_nosc_nots_nosa_noea attributes
905 { $$ = tree_cons ($2, NULL_TREE, $1);
906 TREE_STATIC ($$) = TREE_STATIC ($1); }
909 declspecs_nosc_nots_sa_noea:
910 declspecs_nosc_nots_sa_noea TYPE_QUAL
911 { $$ = tree_cons (NULL_TREE, $2, $1);
912 TREE_STATIC ($$) = 1; }
913 | declspecs_nosc_nots_sa_ea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
918 declspecs_nosc_nots_sa_ea:
920 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
921 TREE_STATIC ($$) = 0; }
922 | declspecs_nosc_nots_sa_noea attributes
923 { $$ = tree_cons ($2, NULL_TREE, $1);
924 TREE_STATIC ($$) = TREE_STATIC ($1); }
927 declspecs_nosc_ts_nosa_noea:
929 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
930 TREE_STATIC ($$) = 1; }
931 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
932 { $$ = tree_cons (NULL_TREE, $2, $1);
933 TREE_STATIC ($$) = 1; }
934 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
935 { $$ = tree_cons (NULL_TREE, $2, $1);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
938 { $$ = tree_cons (NULL_TREE, $2, $1);
939 TREE_STATIC ($$) = 1; }
940 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declspecs_nosc_nots_nosa_noea typespec_nonattr
944 { $$ = tree_cons (NULL_TREE, $2, $1);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_nots_nosa_ea typespec_nonattr
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
951 declspecs_nosc_ts_nosa_ea:
953 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
954 TREE_STATIC ($$) = 1; }
955 | declspecs_nosc_ts_nosa_noea attributes
956 { $$ = tree_cons ($2, NULL_TREE, $1);
957 TREE_STATIC ($$) = TREE_STATIC ($1); }
958 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
959 { $$ = tree_cons (NULL_TREE, $2, $1);
960 TREE_STATIC ($$) = 1; }
961 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
964 | declspecs_nosc_nots_nosa_noea typespec_attr
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_nots_nosa_ea typespec_attr
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
972 declspecs_nosc_ts_sa_noea:
973 declspecs_nosc_ts_sa_noea TYPE_QUAL
974 { $$ = tree_cons (NULL_TREE, $2, $1);
975 TREE_STATIC ($$) = 1; }
976 | declspecs_nosc_ts_sa_ea TYPE_QUAL
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
985 | declspecs_nosc_nots_sa_noea typespec_nonattr
986 { $$ = tree_cons (NULL_TREE, $2, $1);
987 TREE_STATIC ($$) = 1; }
988 | declspecs_nosc_nots_sa_ea typespec_nonattr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
993 declspecs_nosc_ts_sa_ea:
994 declspecs_nosc_ts_sa_noea attributes
995 { $$ = tree_cons ($2, NULL_TREE, $1);
996 TREE_STATIC ($$) = TREE_STATIC ($1); }
997 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
998 { $$ = tree_cons (NULL_TREE, $2, $1);
999 TREE_STATIC ($$) = 1; }
1000 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_nots_sa_noea typespec_attr
1004 { $$ = tree_cons (NULL_TREE, $2, $1);
1005 TREE_STATIC ($$) = 1; }
1006 | declspecs_nosc_nots_sa_ea typespec_attr
1007 { $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = 1; }
1011 declspecs_sc_nots_nosa_noea:
1013 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1014 TREE_STATIC ($$) = 0; }
1015 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1016 { $$ = tree_cons (NULL_TREE, $2, $1);
1017 TREE_STATIC ($$) = 1; }
1018 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1019 { $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = 1; }
1021 | declspecs_nosc_nots_nosa_noea scspec
1022 { if (extra_warnings && TREE_STATIC ($1))
1023 warning ("`%s' is not at beginning of declaration",
1024 IDENTIFIER_POINTER ($2));
1025 $$ = tree_cons (NULL_TREE, $2, $1);
1026 TREE_STATIC ($$) = TREE_STATIC ($1); }
1027 | declspecs_nosc_nots_nosa_ea scspec
1028 { if (extra_warnings && TREE_STATIC ($1))
1029 warning ("`%s' is not at beginning of declaration",
1030 IDENTIFIER_POINTER ($2));
1031 $$ = tree_cons (NULL_TREE, $2, $1);
1032 TREE_STATIC ($$) = TREE_STATIC ($1); }
1033 | declspecs_sc_nots_nosa_noea scspec
1034 { if (extra_warnings && TREE_STATIC ($1))
1035 warning ("`%s' is not at beginning of declaration",
1036 IDENTIFIER_POINTER ($2));
1037 $$ = tree_cons (NULL_TREE, $2, $1);
1038 TREE_STATIC ($$) = TREE_STATIC ($1); }
1039 | declspecs_sc_nots_nosa_ea scspec
1040 { if (extra_warnings && TREE_STATIC ($1))
1041 warning ("`%s' is not at beginning of declaration",
1042 IDENTIFIER_POINTER ($2));
1043 $$ = tree_cons (NULL_TREE, $2, $1);
1044 TREE_STATIC ($$) = TREE_STATIC ($1); }
1047 declspecs_sc_nots_nosa_ea:
1048 declspecs_sc_nots_nosa_noea attributes
1049 { $$ = tree_cons ($2, NULL_TREE, $1);
1050 TREE_STATIC ($$) = TREE_STATIC ($1); }
1053 declspecs_sc_nots_sa_noea:
1054 declspecs_sc_nots_sa_noea TYPE_QUAL
1055 { $$ = tree_cons (NULL_TREE, $2, $1);
1056 TREE_STATIC ($$) = 1; }
1057 | declspecs_sc_nots_sa_ea TYPE_QUAL
1058 { $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = 1; }
1060 | declspecs_nosc_nots_sa_noea scspec
1061 { if (extra_warnings && TREE_STATIC ($1))
1062 warning ("`%s' is not at beginning of declaration",
1063 IDENTIFIER_POINTER ($2));
1064 $$ = tree_cons (NULL_TREE, $2, $1);
1065 TREE_STATIC ($$) = TREE_STATIC ($1); }
1066 | declspecs_nosc_nots_sa_ea scspec
1067 { if (extra_warnings && TREE_STATIC ($1))
1068 warning ("`%s' is not at beginning of declaration",
1069 IDENTIFIER_POINTER ($2));
1070 $$ = tree_cons (NULL_TREE, $2, $1);
1071 TREE_STATIC ($$) = TREE_STATIC ($1); }
1072 | declspecs_sc_nots_sa_noea scspec
1073 { if (extra_warnings && TREE_STATIC ($1))
1074 warning ("`%s' is not at beginning of declaration",
1075 IDENTIFIER_POINTER ($2));
1076 $$ = tree_cons (NULL_TREE, $2, $1);
1077 TREE_STATIC ($$) = TREE_STATIC ($1); }
1078 | declspecs_sc_nots_sa_ea scspec
1079 { if (extra_warnings && TREE_STATIC ($1))
1080 warning ("`%s' is not at beginning of declaration",
1081 IDENTIFIER_POINTER ($2));
1082 $$ = tree_cons (NULL_TREE, $2, $1);
1083 TREE_STATIC ($$) = TREE_STATIC ($1); }
1086 declspecs_sc_nots_sa_ea:
1087 declspecs_sc_nots_sa_noea attributes
1088 { $$ = tree_cons ($2, NULL_TREE, $1);
1089 TREE_STATIC ($$) = TREE_STATIC ($1); }
1092 declspecs_sc_ts_nosa_noea:
1093 declspecs_sc_ts_nosa_noea TYPE_QUAL
1094 { $$ = tree_cons (NULL_TREE, $2, $1);
1095 TREE_STATIC ($$) = 1; }
1096 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1097 { $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = 1; }
1099 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1100 { $$ = tree_cons (NULL_TREE, $2, $1);
1101 TREE_STATIC ($$) = 1; }
1102 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1103 { $$ = tree_cons (NULL_TREE, $2, $1);
1104 TREE_STATIC ($$) = 1; }
1105 | declspecs_sc_nots_nosa_noea typespec_nonattr
1106 { $$ = tree_cons (NULL_TREE, $2, $1);
1107 TREE_STATIC ($$) = 1; }
1108 | declspecs_sc_nots_nosa_ea typespec_nonattr
1109 { $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = 1; }
1111 | declspecs_nosc_ts_nosa_noea scspec
1112 { if (extra_warnings && TREE_STATIC ($1))
1113 warning ("`%s' is not at beginning of declaration",
1114 IDENTIFIER_POINTER ($2));
1115 $$ = tree_cons (NULL_TREE, $2, $1);
1116 TREE_STATIC ($$) = TREE_STATIC ($1); }
1117 | declspecs_nosc_ts_nosa_ea scspec
1118 { if (extra_warnings && TREE_STATIC ($1))
1119 warning ("`%s' is not at beginning of declaration",
1120 IDENTIFIER_POINTER ($2));
1121 $$ = tree_cons (NULL_TREE, $2, $1);
1122 TREE_STATIC ($$) = TREE_STATIC ($1); }
1123 | declspecs_sc_ts_nosa_noea scspec
1124 { if (extra_warnings && TREE_STATIC ($1))
1125 warning ("`%s' is not at beginning of declaration",
1126 IDENTIFIER_POINTER ($2));
1127 $$ = tree_cons (NULL_TREE, $2, $1);
1128 TREE_STATIC ($$) = TREE_STATIC ($1); }
1129 | declspecs_sc_ts_nosa_ea scspec
1130 { if (extra_warnings && TREE_STATIC ($1))
1131 warning ("`%s' is not at beginning of declaration",
1132 IDENTIFIER_POINTER ($2));
1133 $$ = tree_cons (NULL_TREE, $2, $1);
1134 TREE_STATIC ($$) = TREE_STATIC ($1); }
1137 declspecs_sc_ts_nosa_ea:
1138 declspecs_sc_ts_nosa_noea attributes
1139 { $$ = tree_cons ($2, NULL_TREE, $1);
1140 TREE_STATIC ($$) = TREE_STATIC ($1); }
1141 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1142 { $$ = tree_cons (NULL_TREE, $2, $1);
1143 TREE_STATIC ($$) = 1; }
1144 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1145 { $$ = tree_cons (NULL_TREE, $2, $1);
1146 TREE_STATIC ($$) = 1; }
1147 | declspecs_sc_nots_nosa_noea typespec_attr
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_nots_nosa_ea typespec_attr
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1155 declspecs_sc_ts_sa_noea:
1156 declspecs_sc_ts_sa_noea TYPE_QUAL
1157 { $$ = tree_cons (NULL_TREE, $2, $1);
1158 TREE_STATIC ($$) = 1; }
1159 | declspecs_sc_ts_sa_ea TYPE_QUAL
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1166 { $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = 1; }
1168 | declspecs_sc_nots_sa_noea typespec_nonattr
1169 { $$ = tree_cons (NULL_TREE, $2, $1);
1170 TREE_STATIC ($$) = 1; }
1171 | declspecs_sc_nots_sa_ea typespec_nonattr
1172 { $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = 1; }
1174 | declspecs_nosc_ts_sa_noea scspec
1175 { if (extra_warnings && TREE_STATIC ($1))
1176 warning ("`%s' is not at beginning of declaration",
1177 IDENTIFIER_POINTER ($2));
1178 $$ = tree_cons (NULL_TREE, $2, $1);
1179 TREE_STATIC ($$) = TREE_STATIC ($1); }
1180 | declspecs_nosc_ts_sa_ea scspec
1181 { if (extra_warnings && TREE_STATIC ($1))
1182 warning ("`%s' is not at beginning of declaration",
1183 IDENTIFIER_POINTER ($2));
1184 $$ = tree_cons (NULL_TREE, $2, $1);
1185 TREE_STATIC ($$) = TREE_STATIC ($1); }
1186 | declspecs_sc_ts_sa_noea scspec
1187 { if (extra_warnings && TREE_STATIC ($1))
1188 warning ("`%s' is not at beginning of declaration",
1189 IDENTIFIER_POINTER ($2));
1190 $$ = tree_cons (NULL_TREE, $2, $1);
1191 TREE_STATIC ($$) = TREE_STATIC ($1); }
1192 | declspecs_sc_ts_sa_ea scspec
1193 { if (extra_warnings && TREE_STATIC ($1))
1194 warning ("`%s' is not at beginning of declaration",
1195 IDENTIFIER_POINTER ($2));
1196 $$ = tree_cons (NULL_TREE, $2, $1);
1197 TREE_STATIC ($$) = TREE_STATIC ($1); }
1200 declspecs_sc_ts_sa_ea:
1201 declspecs_sc_ts_sa_noea attributes
1202 { $$ = tree_cons ($2, NULL_TREE, $1);
1203 TREE_STATIC ($$) = TREE_STATIC ($1); }
1204 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1205 { $$ = tree_cons (NULL_TREE, $2, $1);
1206 TREE_STATIC ($$) = 1; }
1207 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1208 { $$ = tree_cons (NULL_TREE, $2, $1);
1209 TREE_STATIC ($$) = 1; }
1210 | declspecs_sc_nots_sa_noea typespec_attr
1211 { $$ = tree_cons (NULL_TREE, $2, $1);
1212 TREE_STATIC ($$) = 1; }
1213 | declspecs_sc_nots_sa_ea typespec_attr
1214 { $$ = tree_cons (NULL_TREE, $2, $1);
1215 TREE_STATIC ($$) = 1; }
1218 /* Particular useful classes of declspecs. */
1220 declspecs_nosc_ts_nosa_noea
1221 | declspecs_nosc_ts_nosa_ea
1222 | declspecs_nosc_ts_sa_noea
1223 | declspecs_nosc_ts_sa_ea
1224 | declspecs_sc_ts_nosa_noea
1225 | declspecs_sc_ts_nosa_ea
1226 | declspecs_sc_ts_sa_noea
1227 | declspecs_sc_ts_sa_ea
1231 declspecs_nosc_nots_nosa_noea
1232 | declspecs_nosc_nots_nosa_ea
1233 | declspecs_nosc_nots_sa_noea
1234 | declspecs_nosc_nots_sa_ea
1235 | declspecs_sc_nots_nosa_noea
1236 | declspecs_sc_nots_nosa_ea
1237 | declspecs_sc_nots_sa_noea
1238 | declspecs_sc_nots_sa_ea
1242 declspecs_nosc_ts_nosa_noea
1243 | declspecs_nosc_ts_nosa_ea
1244 | declspecs_sc_ts_nosa_noea
1245 | declspecs_sc_ts_nosa_ea
1248 declspecs_nots_nosa:
1249 declspecs_nosc_nots_nosa_noea
1250 | declspecs_nosc_nots_nosa_ea
1251 | declspecs_sc_nots_nosa_noea
1252 | declspecs_sc_nots_nosa_ea
1256 declspecs_nosc_ts_nosa_noea
1257 | declspecs_nosc_ts_nosa_ea
1258 | declspecs_nosc_ts_sa_noea
1259 | declspecs_nosc_ts_sa_ea
1262 declspecs_nosc_nots:
1263 declspecs_nosc_nots_nosa_noea
1264 | declspecs_nosc_nots_nosa_ea
1265 | declspecs_nosc_nots_sa_noea
1266 | declspecs_nosc_nots_sa_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
1274 | declspecs_nosc_nots_nosa_noea
1275 | declspecs_nosc_nots_nosa_ea
1276 | declspecs_nosc_nots_sa_noea
1277 | declspecs_nosc_nots_sa_ea
1281 declspecs_nosc_nots_nosa_noea
1282 | declspecs_nosc_nots_nosa_ea
1283 | declspecs_nosc_nots_sa_noea
1284 | declspecs_nosc_nots_sa_ea
1285 | declspecs_nosc_ts_nosa_noea
1286 | declspecs_nosc_ts_nosa_ea
1287 | declspecs_nosc_ts_sa_noea
1288 | declspecs_nosc_ts_sa_ea
1289 | declspecs_sc_nots_nosa_noea
1290 | declspecs_sc_nots_nosa_ea
1291 | declspecs_sc_nots_sa_noea
1292 | declspecs_sc_nots_sa_ea
1293 | declspecs_sc_ts_nosa_noea
1294 | declspecs_sc_ts_nosa_ea
1295 | declspecs_sc_ts_sa_noea
1296 | declspecs_sc_ts_sa_ea
1299 /* A (possibly empty) sequence of type qualifiers and attributes. */
1300 maybe_type_quals_attrs:
1303 | declspecs_nosc_nots
1307 /* A type specifier (but not a type qualifier).
1308 Once we have seen one of these in a declaration,
1309 if a typedef name appears then it is being redeclared.
1311 The _reserved versions start with a reserved word and may appear anywhere
1312 in the declaration specifiers; the _nonreserved versions may only
1313 appear before any other type specifiers, and after that are (if names)
1316 FIXME: should the _nonreserved version be restricted to names being
1317 redeclared only? The other entries there relate only the GNU extensions
1318 and Objective C, and are historically parsed thus, and don't make sense
1319 after other type specifiers, but it might be cleaner to count them as
1322 _attr means: specifiers that either end with attributes,
1323 or are such that any following attributes would
1324 be parsed as part of the specifier.
1326 _nonattr: specifiers. */
1329 typespec_reserved_nonattr
1330 | typespec_nonreserved_nonattr
1334 typespec_reserved_attr
1337 typespec_reserved_nonattr:
1339 { OBJC_NEED_RAW_IDENTIFIER (1); }
1343 typespec_reserved_attr:
1347 typespec_nonreserved_nonattr:
1349 { /* For a typedef name, record the meaning, not the name.
1350 In case of `foo foo, bar;'. */
1351 $$ = lookup_name ($1); }
1353 | CLASSNAME protocolrefs
1354 { $$ = get_static_reference ($1, $2); }
1355 | OBJECTNAME protocolrefs
1356 { $$ = get_object_reference ($2); }
1358 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1359 - nisse@lysator.liu.se */
1360 | non_empty_protocolrefs
1361 { $$ = get_object_reference ($1); }
1363 | typeof '(' expr ')'
1364 { skip_evaluation--; $$ = TREE_TYPE ($3); }
1365 | typeof '(' typename ')'
1366 { skip_evaluation--; $$ = groktypename ($3); }
1369 /* typespec_nonreserved_attr does not exist. */
1373 | initdecls ',' maybe_resetattrs initdcl
1378 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1384 | ASM_KEYWORD '(' STRING ')'
1389 declarator maybeasm maybe_attribute '='
1390 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1391 chainon ($3, all_prefix_attributes));
1392 start_init ($<ttype>$, $2, global_bindings_p ()); }
1394 /* Note how the declaration of the variable is in effect while its init is parsed! */
1396 finish_decl ($<ttype>5, $6, $2); }
1397 | declarator maybeasm maybe_attribute
1398 { tree d = start_decl ($1, current_declspecs, 0,
1399 chainon ($3, all_prefix_attributes));
1400 finish_decl (d, NULL_TREE, $2);
1405 notype_declarator maybeasm maybe_attribute '='
1406 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1407 chainon ($3, all_prefix_attributes));
1408 start_init ($<ttype>$, $2, global_bindings_p ()); }
1410 /* Note how the declaration of the variable is in effect while its init is parsed! */
1412 finish_decl ($<ttype>5, $6, $2); }
1413 | notype_declarator maybeasm maybe_attribute
1414 { tree d = start_decl ($1, current_declspecs, 0,
1415 chainon ($3, all_prefix_attributes));
1416 finish_decl (d, NULL_TREE, $2); }
1418 /* the * rules are dummies to accept the Apollo extended syntax
1419 so that the header files compile. */
1430 | attributes attribute
1431 { $$ = chainon ($1, $2); }
1435 ATTRIBUTE '(' '(' attribute_list ')' ')'
1442 | attribute_list ',' attrib
1443 { $$ = chainon ($1, $3); }
1450 { $$ = build_tree_list ($1, NULL_TREE); }
1451 | any_word '(' IDENTIFIER ')'
1452 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1453 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1454 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1455 | any_word '(' exprlist ')'
1456 { $$ = build_tree_list ($1, $3); }
1459 /* This still leaves out most reserved keywords,
1460 shouldn't we include them? */
1474 /* Initializers. `init' is the entry point. */
1479 { really_start_incremental_init (NULL_TREE); }
1480 initlist_maybe_comma '}'
1481 { $$ = pop_init_level (0); }
1483 { $$ = error_mark_node; }
1486 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1487 initlist_maybe_comma:
1490 pedwarn ("ISO C forbids empty initializer braces"); }
1491 | initlist1 maybecomma
1496 | initlist1 ',' initelt
1499 /* `initelt' is a single element of an initializer.
1500 It may use braces. */
1502 designator_list '=' initval
1503 { if (pedantic && ! flag_isoc99)
1504 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1505 | designator initval
1507 pedwarn ("obsolete use of designated initializer without `='"); }
1509 { set_init_label ($1);
1511 pedwarn ("obsolete use of designated initializer with `:'"); }
1519 { push_init_level (0); }
1520 initlist_maybe_comma '}'
1521 { process_init_element (pop_init_level (0)); }
1523 { process_init_element ($1); }
1529 | designator_list designator
1534 { set_init_label ($2); }
1535 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1536 { set_init_index ($2, $4);
1538 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1539 | '[' expr_no_commas ']'
1540 { set_init_index ($2, NULL_TREE); }
1546 pedwarn ("ISO C forbids nested functions");
1548 push_function_context ();
1549 if (! start_function (current_declspecs, $1,
1550 all_prefix_attributes))
1552 pop_function_context ();
1555 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1557 old_style_parm_decls save_location
1558 { tree decl = current_function_decl;
1559 DECL_SOURCE_LOCATION (decl) = $4;
1560 store_parm_decls (); }
1561 /* This used to use compstmt_or_error.
1562 That caused a bug with input `f(g) int g {}',
1563 where the use of YYERROR1 above caused an error
1564 which then was handled by compstmt_or_error.
1565 There followed a repeated execution of that same rule,
1566 which called YYERROR1 again, and so on. */
1568 { tree decl = current_function_decl;
1569 finish_function (1, 1);
1570 pop_function_context ();
1571 add_decl_stmt (decl); }
1574 notype_nested_function:
1577 pedwarn ("ISO C forbids nested functions");
1579 push_function_context ();
1580 if (! start_function (current_declspecs, $1,
1581 all_prefix_attributes))
1583 pop_function_context ();
1586 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1588 old_style_parm_decls save_location
1589 { tree decl = current_function_decl;
1590 DECL_SOURCE_LOCATION (decl) = $4;
1591 store_parm_decls (); }
1592 /* This used to use compstmt_or_error.
1593 That caused a bug with input `f(g) int g {}',
1594 where the use of YYERROR1 above caused an error
1595 which then was handled by compstmt_or_error.
1596 There followed a repeated execution of that same rule,
1597 which called YYERROR1 again, and so on. */
1599 { tree decl = current_function_decl;
1600 finish_function (1, 1);
1601 pop_function_context ();
1602 add_decl_stmt (decl); }
1605 /* Any kind of declarator (thus, all declarators allowed
1606 after an explicit typespec). */
1609 after_type_declarator
1613 /* A declarator that is allowed only after an explicit typespec. */
1615 after_type_declarator:
1616 '(' maybe_attribute after_type_declarator ')'
1617 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1618 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1619 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1620 /* | after_type_declarator '(' error ')' %prec '.'
1621 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1622 poplevel (0, 0, 0); } */
1623 | after_type_declarator array_declarator %prec '.'
1624 { $$ = set_array_declarator_type ($2, $1, 0); }
1625 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1626 { $$ = make_pointer_declarator ($2, $3); }
1633 /* Kinds of declarator that can appear in a parameter list
1634 in addition to notype_declarator. This is like after_type_declarator
1635 but does not allow a typedef name in parentheses as an identifier
1636 (because it would conflict with a function with that typedef as arg). */
1638 parm_declarator_starttypename
1639 | parm_declarator_nostarttypename
1642 parm_declarator_starttypename:
1643 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1644 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1645 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1646 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1647 poplevel (0, 0, 0); } */
1648 | parm_declarator_starttypename array_declarator %prec '.'
1649 { $$ = set_array_declarator_type ($2, $1, 0); }
1656 parm_declarator_nostarttypename:
1657 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_nostarttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1664 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1665 { $$ = make_pointer_declarator ($2, $3); }
1666 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1667 { $$ = make_pointer_declarator ($2, $3); }
1668 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1669 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1672 /* A declarator allowed whether or not there has been
1673 an explicit typespec. These cannot redeclare a typedef-name. */
1676 notype_declarator '(' parmlist_or_identifiers %prec '.'
1677 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1678 /* | notype_declarator '(' error ')' %prec '.'
1679 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1680 poplevel (0, 0, 0); } */
1681 | '(' maybe_attribute notype_declarator ')'
1682 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1683 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1684 { $$ = make_pointer_declarator ($2, $3); }
1685 | notype_declarator array_declarator %prec '.'
1686 { $$ = set_array_declarator_type ($2, $1, 0); }
1711 /* structsp_attr: struct/union/enum specifiers that either
1712 end with attributes, or are such that any following attributes would
1713 be parsed as part of the struct/union/enum specifier.
1715 structsp_nonattr: other struct/union/enum specifiers. */
1718 struct_head identifier '{'
1719 { $$ = start_struct (RECORD_TYPE, $2);
1720 /* Start scope of tag before parsing components. */
1722 component_decl_list '}' maybe_attribute
1723 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1724 chainon ($1, $7)); }
1725 | struct_head '{' component_decl_list '}' maybe_attribute
1726 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1727 nreverse ($3), chainon ($1, $5));
1729 | union_head identifier '{'
1730 { $$ = start_struct (UNION_TYPE, $2); }
1731 component_decl_list '}' maybe_attribute
1732 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1733 chainon ($1, $7)); }
1734 | union_head '{' component_decl_list '}' maybe_attribute
1735 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1736 nreverse ($3), chainon ($1, $5));
1738 | enum_head identifier '{'
1739 { $$ = start_enum ($2); }
1740 enumlist maybecomma_warn '}' maybe_attribute
1741 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1742 chainon ($1, $8)); }
1744 { $$ = start_enum (NULL_TREE); }
1745 enumlist maybecomma_warn '}' maybe_attribute
1746 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1747 chainon ($1, $7)); }
1751 struct_head identifier
1752 { $$ = xref_tag (RECORD_TYPE, $2); }
1753 | union_head identifier
1754 { $$ = xref_tag (UNION_TYPE, $2); }
1755 | enum_head identifier
1756 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1757 /* In ISO C, enumerated types can be referred to
1758 only if already defined. */
1759 if (pedantic && !COMPLETE_TYPE_P ($$))
1760 pedwarn ("ISO C forbids forward references to `enum' types"); }
1771 { if (pedantic && ! flag_isoc99)
1772 pedwarn ("comma at end of enumerator list"); }
1775 /* We chain the components in reverse order. They are put in forward
1776 order in structsp_attr.
1778 Note that component_declarator returns single decls, so components
1779 and components_notype can use TREE_CHAIN directly, wheras components
1780 and components_notype return lists (of comma separated decls), so
1781 component_decl_list and component_decl_list2 must use chainon.
1783 The theory behind all this is that there will be more semicolon
1784 separated fields than comma separated fields, and so we'll be
1785 minimizing the number of node traversals required by chainon. */
1787 component_decl_list:
1788 component_decl_list2
1790 | component_decl_list2 component_decl
1791 { $$ = chainon ($2, $1);
1792 pedwarn ("no semicolon at end of struct or union"); }
1795 component_decl_list2: /* empty */
1797 | component_decl_list2 component_decl ';'
1798 { $$ = chainon ($2, $1); }
1799 | component_decl_list2 ';'
1801 pedwarn ("extra semicolon in struct or union specified"); }
1803 /* foo(sizeof(struct{ @defs(ClassName)})); */
1804 | DEFS '(' CLASSNAME ')'
1806 tree interface = lookup_interface ($3);
1809 $$ = nreverse (get_class_ivars (interface));
1812 error ("cannot find interface declaration for `%s'",
1813 IDENTIFIER_POINTER ($3));
1821 declspecs_nosc_ts setspecs components
1823 POP_DECLSPEC_STACK; }
1824 | declspecs_nosc_ts setspecs
1826 /* Support for unnamed structs or unions as members of
1827 structs or unions (which is [a] useful and [b] supports
1830 pedwarn ("ISO C doesn't support unnamed structs/unions");
1832 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1833 POP_DECLSPEC_STACK; }
1834 | declspecs_nosc_nots setspecs components_notype
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots
1839 pedwarn ("ISO C forbids member declarations with no members");
1840 shadow_tag_warned ($1, pedantic);
1844 | extension component_decl
1846 RESTORE_EXT_FLAGS ($1); }
1850 component_declarator
1851 | components ',' maybe_resetattrs component_declarator
1852 { TREE_CHAIN ($4) = $1; $$ = $4; }
1856 component_notype_declarator
1857 | components_notype ',' maybe_resetattrs component_notype_declarator
1858 { TREE_CHAIN ($4) = $1; $$ = $4; }
1861 component_declarator:
1862 declarator maybe_attribute
1863 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1864 decl_attributes (&$$,
1865 chainon ($2, all_prefix_attributes), 0); }
1866 | declarator ':' expr_no_commas maybe_attribute
1867 { $$ = grokfield ($1, current_declspecs, $3);
1868 decl_attributes (&$$,
1869 chainon ($4, all_prefix_attributes), 0); }
1870 | ':' expr_no_commas maybe_attribute
1871 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1872 decl_attributes (&$$,
1873 chainon ($3, all_prefix_attributes), 0); }
1876 component_notype_declarator:
1877 notype_declarator maybe_attribute
1878 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1879 decl_attributes (&$$,
1880 chainon ($2, all_prefix_attributes), 0); }
1881 | notype_declarator ':' expr_no_commas maybe_attribute
1882 { $$ = grokfield ($1, current_declspecs, $3);
1883 decl_attributes (&$$,
1884 chainon ($4, all_prefix_attributes), 0); }
1885 | ':' expr_no_commas maybe_attribute
1886 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1887 decl_attributes (&$$,
1888 chainon ($3, all_prefix_attributes), 0); }
1891 /* We chain the enumerators in reverse order.
1892 They are put in forward order in structsp_attr. */
1896 | enumlist ',' enumerator
1897 { if ($1 == error_mark_node)
1900 TREE_CHAIN ($3) = $1, $$ = $3; }
1902 { $$ = error_mark_node; }
1908 { $$ = build_enumerator ($1, NULL_TREE); }
1909 | identifier '=' expr_no_commas
1910 { $$ = build_enumerator ($1, $3); }
1915 { pending_xref_error ();
1918 { $$ = build_tree_list ($<ttype>2, $3); }
1921 absdcl: /* an absolute declarator */
1927 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1929 { $$ = build_tree_list (build_tree_list (current_declspecs,
1931 all_prefix_attributes); }
1933 { $$ = build_tree_list (build_tree_list (current_declspecs,
1935 all_prefix_attributes); }
1936 | absdcl1_noea attributes
1937 { $$ = build_tree_list (build_tree_list (current_declspecs,
1939 chainon ($2, all_prefix_attributes)); }
1942 absdcl1: /* a nonempty absolute declarator */
1949 | '*' maybe_type_quals_attrs absdcl1_noea
1950 { $$ = make_pointer_declarator ($2, $3); }
1954 '*' maybe_type_quals_attrs
1955 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1956 | '*' maybe_type_quals_attrs absdcl1_ea
1957 { $$ = make_pointer_declarator ($2, $3); }
1961 '(' maybe_attribute absdcl1 ')'
1962 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1963 | direct_absdcl1 '(' parmlist
1964 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1965 | direct_absdcl1 array_declarator
1966 { $$ = set_array_declarator_type ($2, $1, 1); }
1968 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1970 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1973 /* The [...] part of a declarator for an array type. */
1976 '[' maybe_type_quals_attrs expr ']'
1977 { $$ = build_array_declarator ($3, $2, 0, 0); }
1978 | '[' maybe_type_quals_attrs ']'
1979 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1980 | '[' maybe_type_quals_attrs '*' ']'
1981 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1982 | '[' STATIC maybe_type_quals_attrs expr ']'
1983 { $$ = build_array_declarator ($4, $3, 1, 0); }
1984 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1985 | '[' declspecs_nosc_nots STATIC expr ']'
1986 { $$ = build_array_declarator ($4, $2, 1, 0); }
1989 /* A nonempty series of declarations and statements (possibly followed by
1990 some labels) that can form the body of a compound statement.
1991 NOTE: we don't allow labels on declarations; this might seem like a
1992 natural extension, but there would be a conflict between attributes
1993 on the label and prefix attributes on the declaration. */
1996 lineno_stmt_decl_or_labels_ending_stmt
1997 | lineno_stmt_decl_or_labels_ending_decl
1998 | lineno_stmt_decl_or_labels_ending_label
2000 pedwarn ("deprecated use of label at end of compound statement");
2002 | lineno_stmt_decl_or_labels_ending_error
2005 lineno_stmt_decl_or_labels_ending_stmt:
2007 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2008 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2009 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2010 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2013 lineno_stmt_decl_or_labels_ending_decl:
2015 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2017 if ((pedantic && !flag_isoc99)
2018 || warn_declaration_after_statement)
2019 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2021 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2022 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2025 lineno_stmt_decl_or_labels_ending_label:
2027 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2028 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2029 | lineno_stmt_decl_or_labels_ending_label lineno_label
2030 | lineno_stmt_decl_or_labels_ending_error lineno_label
2033 lineno_stmt_decl_or_labels_ending_error:
2035 | lineno_stmt_decl_or_labels errstmt
2038 lineno_stmt_decl_or_labels:
2039 lineno_stmt_decl_or_labels_ending_stmt
2040 | lineno_stmt_decl_or_labels_ending_decl
2041 | lineno_stmt_decl_or_labels_ending_label
2042 | lineno_stmt_decl_or_labels_ending_error
2048 pushlevel: /* empty */
2051 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2053 if (objc_method_context)
2059 poplevel: /* empty */
2060 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2063 /* Start and end blocks created for the new scopes of C99. */
2064 c99_block_start: /* empty */
2067 $$ = c_begin_compound_stmt ();
2070 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2072 if (objc_method_context)
2081 /* Productions using c99_block_start and c99_block_end will need to do what's
2082 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2083 $1 is the value of c99_block_start and $2 of c99_block_end. */
2084 c99_block_end: /* empty */
2087 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2088 $$ = poplevel (KEEP_MAYBE, 0, 0);
2089 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2090 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2097 /* Read zero or more forward-declarations for labels
2098 that nested functions can jump to. */
2103 pedwarn ("ISO C forbids label declarations"); }
2108 | label_decls label_decl
2112 LABEL identifiers_or_typenames ';'
2114 for (link = $2; link; link = TREE_CHAIN (link))
2116 tree label = declare_label (TREE_VALUE (link));
2117 C_DECLARED_LABEL_FLAG (label) = 1;
2118 add_decl_stmt (label);
2123 /* This is the body of a function definition.
2124 It causes syntax errors to ignore to the next openbrace. */
2131 compstmt_start: '{' { compstmt_count++;
2132 $$ = c_begin_compound_stmt (); }
2135 compstmt_nostart: '}'
2136 { $$ = convert (void_type_node, integer_zero_node); }
2137 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2138 { $$ = poplevel (KEEP_MAYBE, 1, 0);
2139 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2140 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2144 compstmt_contents_nonempty:
2149 compstmt_primary_start:
2151 { if (current_function_decl == 0)
2153 error ("braced-group within expression allowed only inside a function");
2156 /* We must force a BLOCK for this level
2157 so that, if it is not expanded later,
2158 there is a way to turn off the entire subtree of blocks
2159 that are contained in it. */
2162 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2166 compstmt: compstmt_start compstmt_nostart
2167 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2168 last_expr_type = NULL_TREE;
2172 /* Value is number of statements counted as of the closeparen. */
2174 if_prefix c99_block_lineno_labeled_stmt
2175 { c_finish_then (); }
2176 /* Make sure c_expand_end_cond is run once
2177 for each call to c_expand_start_cond.
2178 Otherwise a crash is likely. */
2183 /* We must build the IF_STMT node before parsing its
2184 condition so that STMT_LINENO refers to the line
2185 containing the "if", and not the line containing
2186 the close-parenthesis.
2188 c_begin_if_stmt returns the IF_STMT node, which
2189 we later pass to c_expand_start_cond to fill
2190 in the condition and other tidbits. */
2192 { $<ttype>$ = c_begin_if_stmt (); }
2194 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2195 compstmt_count,$<ttype>2);
2196 $<itype>$ = stmt_count;
2197 if_stmt_locus = $<location>-1; }
2200 /* This is a subroutine of stmt.
2201 It is used twice, once for valid DO statements
2202 and once for catching errors in parsing the end test. */
2208 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2210 /* In the event that a parse error prevents
2211 parsing the complete do-statement, set the
2212 condition now. Otherwise, we can get crashes at
2213 RTL-generation time. */
2214 DO_COND ($<ttype>$) = error_mark_node; }
2215 c99_block_lineno_labeled_stmt WHILE
2217 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2220 /* The forced readahead in here is because we might be at the end of a
2221 line, and the line and file won't be bumped until yylex absorbs the
2222 first token on the next line. */
2225 { if (yychar == YYEMPTY)
2227 $$ = input_location; }
2230 lineno_labeled_stmt:
2232 | lineno_label lineno_labeled_stmt
2235 /* Like lineno_labeled_stmt, but a block in C99. */
2236 c99_block_lineno_labeled_stmt:
2237 c99_block_start lineno_labeled_stmt c99_block_end
2239 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2246 STMT_LINENO ($2) = $1.line;
2247 /* ??? We currently have no way of recording
2248 the filename for a statement. This probably
2249 matters little in practice at the moment,
2250 but I suspect that problems will occur when
2251 doing inlining at the tree level. */
2260 STMT_LINENO ($2) = $1.line;
2265 select_or_iter_stmt:
2267 { c_expand_start_else ();
2268 $<itype>1 = stmt_count; }
2269 c99_block_lineno_labeled_stmt
2271 c_expand_end_cond ();
2272 if (extra_warnings && stmt_count == $<itype>1)
2273 warning ("empty body in an else-statement"); }
2274 | simple_if %prec IF
2275 { c_expand_end_cond ();
2276 /* This warning is here instead of in simple_if, because we
2277 do not want a warning if an empty if is followed by an
2278 else statement. Increment stmt_count so we don't
2279 give a second error if this is a nested `if'. */
2280 if (extra_warnings && stmt_count++ == $<itype>1)
2281 warning ("%Hempty body in an if-statement",
2283 /* Make sure c_expand_end_cond is run once
2284 for each call to c_expand_start_cond.
2285 Otherwise a crash is likely. */
2286 | simple_if ELSE error
2287 { c_expand_end_cond (); }
2288 /* We must build the WHILE_STMT node before parsing its
2289 condition so that STMT_LINENO refers to the line
2290 containing the "while", and not the line containing
2291 the close-parenthesis.
2293 c_begin_while_stmt returns the WHILE_STMT node, which
2294 we later pass to c_finish_while_stmt_cond to fill
2295 in the condition and other tidbits. */
2298 $<ttype>$ = c_begin_while_stmt (); }
2300 { $4 = c_common_truthvalue_conversion ($4);
2301 c_finish_while_stmt_cond
2302 (c_common_truthvalue_conversion ($4), $<ttype>2);
2303 $<ttype>$ = add_stmt ($<ttype>2); }
2304 c99_block_lineno_labeled_stmt
2305 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2308 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2309 | do_stmt_start error
2312 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2313 NULL_TREE, NULL_TREE);
2314 add_stmt ($<ttype>$); }
2317 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2320 FOR_COND ($<ttype>2)
2321 = c_common_truthvalue_conversion ($6); }
2323 { FOR_EXPR ($<ttype>2) = $9; }
2324 c99_block_lineno_labeled_stmt
2325 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2326 | SWITCH '(' expr ')'
2328 $<ttype>$ = c_start_case ($3); }
2329 c99_block_lineno_labeled_stmt
2330 { c_finish_case (); }
2335 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2337 { check_for_loop_decls (); }
2340 /* Parse a single real statement, not including any labels. */
2343 { stmt_count++; $$ = $1; }
2346 $$ = c_expand_expr_stmt ($1); }
2347 | c99_block_start select_or_iter_stmt c99_block_end
2349 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2353 $$ = add_stmt (build_break_stmt ()); }
2356 $$ = add_stmt (build_continue_stmt ()); }
2359 $$ = c_expand_return (NULL_TREE); }
2362 $$ = c_expand_return ($2); }
2363 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2365 $$ = simple_asm_stmt ($4); }
2366 /* This is the case with just output operands. */
2367 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2369 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2370 /* This is the case with input operands as well. */
2371 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2372 asm_operands ')' ';'
2374 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2375 /* This is the case with clobbered registers as well. */
2376 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2377 asm_operands ':' asm_clobbers ')' ';'
2379 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2380 | GOTO identifier ';'
2383 decl = lookup_label ($2);
2386 TREE_USED (decl) = 1;
2387 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2394 pedwarn ("ISO C forbids `goto *expr;'");
2396 $3 = convert (ptr_type_node, $3);
2397 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2402 /* Any kind of label, including jump labels and case labels.
2403 ANSI C accepts labels only before statements, but we allow them
2404 also at the end of a compound statement. */
2406 label: CASE expr_no_commas ':'
2408 $$ = do_case ($2, NULL_TREE); }
2409 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2411 $$ = do_case ($2, $4); }
2414 $$ = do_case (NULL_TREE, NULL_TREE); }
2415 | identifier save_location ':' maybe_attribute
2416 { tree label = define_label ($2, $1);
2420 decl_attributes (&label, $4, 0);
2421 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2428 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2432 { emit_line_note (input_location);
2435 { emit_line_note (input_location); }
2444 /* These are the operands other than the first string and colon
2445 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2446 asm_operands: /* empty */
2448 | nonnull_asm_operands
2451 nonnull_asm_operands:
2453 | nonnull_asm_operands ',' asm_operand
2454 { $$ = chainon ($1, $3); }
2459 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2460 | '[' identifier ']' STRING '(' expr ')'
2461 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2462 IDENTIFIER_POINTER ($2));
2463 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2468 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2469 | asm_clobbers ',' STRING
2470 { $$ = tree_cons (NULL_TREE, $3, $1); }
2473 /* This is what appears inside the parens in a function declarator.
2474 Its value is a list of ..._TYPE nodes. Attributes must appear here
2475 to avoid a conflict with their appearance after an open parenthesis
2476 in an abstract declarator, as in
2477 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2481 clear_parm_order ();
2482 declare_parm_level (); }
2485 parmlist_tags_warning ();
2486 poplevel (0, 0, 0); }
2494 pedwarn ("ISO C forbids forward parameter declarations");
2495 /* Mark the forward decls as such. */
2496 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2497 TREE_ASM_WRITTEN (parm) = 1;
2498 clear_parm_order (); }
2500 { /* Dummy action so attributes are in known place
2501 on parser stack. */ }
2505 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2508 /* This is what appears inside the parens in a function declarator.
2509 Is value is represented in the format that grokdeclarator expects. */
2510 parmlist_2: /* empty */
2511 { $$ = get_parm_info (0); }
2513 { $$ = get_parm_info (0);
2514 /* Gcc used to allow this as an extension. However, it does
2515 not work for all targets, and thus has been disabled.
2516 Also, since func (...) and func () are indistinguishable,
2517 it caused problems with the code in expand_builtin which
2518 tries to verify that BUILT_IN_NEXT_ARG is being used
2520 error ("ISO C requires a named argument before `...'");
2523 { $$ = get_parm_info (1);
2524 parsing_iso_function_signature = true;
2526 | parms ',' ELLIPSIS
2527 { $$ = get_parm_info (0); }
2532 { push_parm_decl ($1); }
2534 { push_parm_decl ($3); }
2537 /* A single parameter declaration or parameter type name,
2538 as found in a parmlist. */
2540 declspecs_ts setspecs parm_declarator maybe_attribute
2541 { $$ = build_tree_list (build_tree_list (current_declspecs,
2543 chainon ($4, all_prefix_attributes));
2544 POP_DECLSPEC_STACK; }
2545 | declspecs_ts setspecs notype_declarator maybe_attribute
2546 { $$ = build_tree_list (build_tree_list (current_declspecs,
2548 chainon ($4, all_prefix_attributes));
2549 POP_DECLSPEC_STACK; }
2550 | declspecs_ts setspecs absdcl_maybe_attribute
2552 POP_DECLSPEC_STACK; }
2553 | declspecs_nots setspecs notype_declarator maybe_attribute
2554 { $$ = build_tree_list (build_tree_list (current_declspecs,
2556 chainon ($4, all_prefix_attributes));
2557 POP_DECLSPEC_STACK; }
2559 | declspecs_nots setspecs absdcl_maybe_attribute
2561 POP_DECLSPEC_STACK; }
2564 /* The first parm, which must suck attributes from off the top of the parser
2567 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2568 { $$ = build_tree_list (build_tree_list (current_declspecs,
2570 chainon ($4, all_prefix_attributes));
2571 POP_DECLSPEC_STACK; }
2572 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2573 { $$ = build_tree_list (build_tree_list (current_declspecs,
2575 chainon ($4, all_prefix_attributes));
2576 POP_DECLSPEC_STACK; }
2577 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2579 POP_DECLSPEC_STACK; }
2580 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2581 { $$ = build_tree_list (build_tree_list (current_declspecs,
2583 chainon ($4, all_prefix_attributes));
2584 POP_DECLSPEC_STACK; }
2586 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2588 POP_DECLSPEC_STACK; }
2593 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2594 all_prefix_attributes = prefix_attributes; }
2597 /* This is used in a function definition
2598 where either a parmlist or an identifier list is ok.
2599 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2600 parmlist_or_identifiers:
2603 clear_parm_order ();
2604 declare_parm_level (); }
2605 parmlist_or_identifiers_1
2607 parmlist_tags_warning ();
2608 poplevel (0, 0, 0); }
2611 parmlist_or_identifiers_1:
2615 for (t = $1; t; t = TREE_CHAIN (t))
2616 if (TREE_VALUE (t) == NULL_TREE)
2617 error ("`...' in old-style identifier list");
2618 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2620 /* Make sure we have a parmlist after attributes. */
2622 && (TREE_CODE ($$) != TREE_LIST
2623 || TREE_PURPOSE ($$) == 0
2624 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2629 /* A nonempty list of identifiers. */
2632 { $$ = build_tree_list (NULL_TREE, $1); }
2633 | identifiers ',' IDENTIFIER
2634 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2637 /* A nonempty list of identifiers, including typenames. */
2638 identifiers_or_typenames:
2640 { $$ = build_tree_list (NULL_TREE, $1); }
2641 | identifiers_or_typenames ',' identifier
2642 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2647 { $$ = SAVE_EXT_FLAGS();
2649 warn_pointer_arith = 0;
2650 warn_traditional = 0;
2655 /* Objective-C productions. */
2665 if (objc_implementation_context)
2667 finish_class (objc_implementation_context);
2668 objc_ivar_chain = NULL_TREE;
2669 objc_implementation_context = NULL_TREE;
2672 warning ("`@end' must appear in an implementation context");
2676 /* A nonempty list of identifiers. */
2679 { $$ = build_tree_list (NULL_TREE, $1); }
2680 | identifier_list ',' identifier
2681 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2685 CLASS identifier_list ';'
2687 objc_declare_class ($2);
2692 ALIAS identifier identifier ';'
2694 objc_declare_alias ($2, $3);
2699 INTERFACE identifier protocolrefs '{'
2701 objc_interface_context = objc_ivar_context
2702 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2703 objc_public_flag = 0;
2707 continue_class (objc_interface_context);
2712 finish_class (objc_interface_context);
2713 objc_interface_context = NULL_TREE;
2716 | INTERFACE identifier protocolrefs
2718 objc_interface_context
2719 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2720 continue_class (objc_interface_context);
2725 finish_class (objc_interface_context);
2726 objc_interface_context = NULL_TREE;
2729 | INTERFACE identifier ':' identifier protocolrefs '{'
2731 objc_interface_context = objc_ivar_context
2732 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2733 objc_public_flag = 0;
2737 continue_class (objc_interface_context);
2742 finish_class (objc_interface_context);
2743 objc_interface_context = NULL_TREE;
2746 | INTERFACE identifier ':' identifier protocolrefs
2748 objc_interface_context
2749 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2750 continue_class (objc_interface_context);
2755 finish_class (objc_interface_context);
2756 objc_interface_context = NULL_TREE;
2759 | IMPLEMENTATION identifier '{'
2761 objc_implementation_context = objc_ivar_context
2762 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2763 objc_public_flag = 0;
2768 = continue_class (objc_implementation_context);
2771 | IMPLEMENTATION identifier
2773 objc_implementation_context
2774 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2776 = continue_class (objc_implementation_context);
2779 | IMPLEMENTATION identifier ':' identifier '{'
2781 objc_implementation_context = objc_ivar_context
2782 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2783 objc_public_flag = 0;
2788 = continue_class (objc_implementation_context);
2791 | IMPLEMENTATION identifier ':' identifier
2793 objc_implementation_context
2794 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2796 = continue_class (objc_implementation_context);
2799 | INTERFACE identifier '(' identifier ')' protocolrefs
2801 objc_interface_context
2802 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2803 continue_class (objc_interface_context);
2808 finish_class (objc_interface_context);
2809 objc_interface_context = NULL_TREE;
2812 | IMPLEMENTATION identifier '(' identifier ')'
2814 objc_implementation_context
2815 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2817 = continue_class (objc_implementation_context);
2822 PROTOCOL identifier protocolrefs
2824 objc_pq_context = 1;
2825 objc_interface_context
2826 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2830 objc_pq_context = 0;
2831 finish_protocol(objc_interface_context);
2832 objc_interface_context = NULL_TREE;
2834 /* The @protocol forward-declaration production introduces a
2835 reduce/reduce conflict on ';', which should be resolved in
2836 favor of the production 'identifier_list -> identifier'. */
2837 | PROTOCOL identifier_list ';'
2839 objc_declare_protocols ($2);
2848 | non_empty_protocolrefs
2851 non_empty_protocolrefs:
2852 ARITHCOMPARE identifier_list ARITHCOMPARE
2854 if ($1 == LT_EXPR && $3 == GT_EXPR)
2862 ivar_decl_list visibility_spec ivar_decls
2867 PRIVATE { objc_public_flag = 2; }
2868 | PROTECTED { objc_public_flag = 0; }
2869 | PUBLIC { objc_public_flag = 1; }
2877 | ivar_decls ivar_decl ';'
2881 pedwarn ("extra semicolon in struct or union specified");
2886 /* There is a shift-reduce conflict here, because `components' may
2887 start with a `typename'. It happens that shifting (the default resolution)
2888 does the right thing, because it treats the `typename' as part of
2889 a `typed_typespecs'.
2891 It is possible that this same technique would allow the distinction
2892 between `notype_initdecls' and `initdecls' to be eliminated.
2893 But I am being cautious and not trying it. */
2896 declspecs_nosc_ts setspecs ivars
2898 POP_DECLSPEC_STACK; }
2899 | declspecs_nosc_nots setspecs ivars
2901 POP_DECLSPEC_STACK; }
2910 | ivars ',' maybe_resetattrs ivar_declarator
2916 $$ = add_instance_variable (objc_ivar_context,
2918 $1, current_declspecs,
2921 | declarator ':' expr_no_commas
2923 $$ = add_instance_variable (objc_ivar_context,
2925 $1, current_declspecs, $3);
2927 | ':' expr_no_commas
2929 $$ = add_instance_variable (objc_ivar_context,
2932 current_declspecs, $2);
2938 { objc_inherit_code = CLASS_METHOD_DECL; }
2940 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2946 objc_pq_context = 1;
2947 if (!objc_implementation_context)
2948 fatal_error ("method definition not in class context");
2952 objc_pq_context = 0;
2953 if (objc_inherit_code == CLASS_METHOD_DECL)
2954 add_class_method (objc_implementation_context, $3);
2956 add_instance_method (objc_implementation_context, $3);
2957 start_method_def ($3);
2961 continue_method_def ();
2965 finish_method_def ();
2969 /* the reason for the strange actions in this rule
2970 is so that notype_initdecls when reached via datadef
2971 can find a valid list of type and sc specs in $0. */
2975 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2978 methodprotolist2: /* eliminates a shift/reduce conflict */
2981 | methodprotolist2 methodproto
2982 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2993 /* Remember protocol qualifiers in prototypes. */
2994 objc_pq_context = 1;
2998 /* Forget protocol qualifiers here. */
2999 objc_pq_context = 0;
3000 if (objc_inherit_code == CLASS_METHOD_DECL)
3001 add_class_method (objc_interface_context, $3);
3003 add_instance_method (objc_interface_context, $3);
3009 '(' typename ')' unaryselector
3011 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3016 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3019 | '(' typename ')' keywordselector optparmlist
3021 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3024 | keywordselector optparmlist
3026 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3030 /* "optarglist" assumes that start_method_def has already been called...
3031 if it is not, the "xdecls" will not be placed in the proper scope */
3038 /* to get around the following situation: "int foo (int a) int b; {}" that
3039 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3054 declspecs_ts setspecs myparms ';'
3055 { POP_DECLSPEC_STACK; }
3057 { shadow_tag ($1); }
3058 | declspecs_nots ';'
3059 { pedwarn ("empty declaration"); }
3064 { push_parm_decl ($1); }
3065 | myparms ',' myparm
3066 { push_parm_decl ($3); }
3069 /* A single parameter declaration or parameter type name,
3070 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3073 parm_declarator maybe_attribute
3074 { $$ = build_tree_list (build_tree_list (current_declspecs,
3076 chainon ($2, all_prefix_attributes)); }
3077 | notype_declarator maybe_attribute
3078 { $$ = build_tree_list (build_tree_list (current_declspecs,
3080 chainon ($2, all_prefix_attributes)); }
3081 | absdcl_maybe_attribute
3092 /* oh what a kludge! */
3093 $$ = objc_ellipsis_node;
3101 /* returns a tree list node generated by get_parm_info */
3114 | keywordselector keyworddecl
3116 $$ = chainon ($1, $2);
3129 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3130 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3131 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3132 | TYPESPEC | TYPE_QUAL
3136 selector ':' '(' typename ')' identifier
3138 $$ = build_keyword_decl ($1, $4, $6);
3141 | selector ':' identifier
3143 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3146 | ':' '(' typename ')' identifier
3148 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3153 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3164 | keywordarglist keywordarg
3166 $$ = chainon ($1, $2);
3174 if (TREE_CHAIN ($1) == NULL_TREE)
3175 /* just return the expr., remove a level of indirection */
3176 $$ = TREE_VALUE ($1);
3178 /* we have a comma expr., we will collapse later */
3184 selector ':' keywordexpr
3186 $$ = build_tree_list ($1, $3);
3190 $$ = build_tree_list (NULL_TREE, $2);
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 },
3374 /* These are recognized only in protocol-qualifier context
3376 { "bycopy", RID_BYCOPY, D_OBJC },
3377 { "byref", RID_BYREF, D_OBJC },
3378 { "in", RID_IN, D_OBJC },
3379 { "inout", RID_INOUT, D_OBJC },
3380 { "oneway", RID_ONEWAY, D_OBJC },
3381 { "out", RID_OUT, D_OBJC },
3384 #define N_reswords (sizeof reswords / sizeof (struct resword))
3386 /* Table mapping from RID_* constants to yacc token numbers.
3387 Unfortunately we have to have entries for all the keywords in all
3389 static const short rid_to_yy[RID_MAX] =
3391 /* RID_STATIC */ STATIC,
3392 /* RID_UNSIGNED */ TYPESPEC,
3393 /* RID_LONG */ TYPESPEC,
3394 /* RID_CONST */ TYPE_QUAL,
3395 /* RID_EXTERN */ SCSPEC,
3396 /* RID_REGISTER */ SCSPEC,
3397 /* RID_TYPEDEF */ SCSPEC,
3398 /* RID_SHORT */ TYPESPEC,
3399 /* RID_INLINE */ SCSPEC,
3400 /* RID_VOLATILE */ TYPE_QUAL,
3401 /* RID_SIGNED */ TYPESPEC,
3402 /* RID_AUTO */ SCSPEC,
3403 /* RID_RESTRICT */ TYPE_QUAL,
3406 /* RID_COMPLEX */ TYPESPEC,
3407 /* RID_THREAD */ SCSPEC,
3411 /* RID_VIRTUAL */ 0,
3412 /* RID_EXPLICIT */ 0,
3414 /* RID_MUTABLE */ 0,
3417 /* RID_IN */ TYPE_QUAL,
3418 /* RID_OUT */ TYPE_QUAL,
3419 /* RID_INOUT */ TYPE_QUAL,
3420 /* RID_BYCOPY */ TYPE_QUAL,
3421 /* RID_BYREF */ TYPE_QUAL,
3422 /* RID_ONEWAY */ TYPE_QUAL,
3425 /* RID_INT */ TYPESPEC,
3426 /* RID_CHAR */ TYPESPEC,
3427 /* RID_FLOAT */ TYPESPEC,
3428 /* RID_DOUBLE */ TYPESPEC,
3429 /* RID_VOID */ TYPESPEC,
3430 /* RID_ENUM */ ENUM,
3431 /* RID_STRUCT */ STRUCT,
3432 /* RID_UNION */ UNION,
3434 /* RID_ELSE */ ELSE,
3435 /* RID_WHILE */ WHILE,
3438 /* RID_SWITCH */ SWITCH,
3439 /* RID_CASE */ CASE,
3440 /* RID_DEFAULT */ DEFAULT,
3441 /* RID_BREAK */ BREAK,
3442 /* RID_CONTINUE */ CONTINUE,
3443 /* RID_RETURN */ RETURN,
3444 /* RID_GOTO */ GOTO,
3445 /* RID_SIZEOF */ SIZEOF,
3448 /* RID_ASM */ ASM_KEYWORD,
3449 /* RID_TYPEOF */ TYPEOF,
3450 /* RID_ALIGNOF */ ALIGNOF,
3451 /* RID_ATTRIBUTE */ ATTRIBUTE,
3452 /* RID_VA_ARG */ VA_ARG,
3453 /* RID_EXTENSION */ EXTENSION,
3454 /* RID_IMAGPART */ IMAGPART,
3455 /* RID_REALPART */ REALPART,
3456 /* RID_LABEL */ LABEL,
3457 /* RID_PTRBASE */ PTR_BASE,
3458 /* RID_PTREXTENT */ PTR_EXTENT,
3459 /* RID_PTRVALUE */ PTR_VALUE,
3461 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3462 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3464 /* RID_FUNCTION_NAME */ FUNC_NAME,
3465 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3466 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3469 /* RID_BOOL */ TYPESPEC,
3473 /* RID_PRIVATE */ 0,
3474 /* RID_PROTECTED */ 0,
3475 /* RID_TEMPLATE */ 0,
3480 /* RID_NAMESPACE */ 0,
3482 /* RID_OPERATOR */ 0,
3487 /* RID_TYPENAME */ 0,
3492 /* RID_CONSTCAST */ 0,
3493 /* RID_DYNCAST */ 0,
3494 /* RID_REINTCAST */ 0,
3495 /* RID_STATCAST */ 0,
3498 /* RID_ID */ OBJECTNAME,
3499 /* RID_AT_ENCODE */ ENCODE,
3500 /* RID_AT_END */ END,
3501 /* RID_AT_CLASS */ CLASS,
3502 /* RID_AT_ALIAS */ ALIAS,
3503 /* RID_AT_DEFS */ DEFS,
3504 /* RID_AT_PRIVATE */ PRIVATE,
3505 /* RID_AT_PROTECTED */ PROTECTED,
3506 /* RID_AT_PUBLIC */ PUBLIC,
3507 /* RID_AT_PROTOCOL */ PROTOCOL,
3508 /* RID_AT_SELECTOR */ SELECTOR,
3509 /* RID_AT_INTERFACE */ INTERFACE,
3510 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3514 init_reswords (void)
3518 int mask = (flag_isoc99 ? 0 : D_C89)
3519 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3521 if (!c_dialect_objc ())
3524 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3525 for (i = 0; i < N_reswords; i++)
3527 /* If a keyword is disabled, do not enter it into the table
3528 and so create a canonical spelling that isn't a keyword. */
3529 if (reswords[i].disable & mask)
3532 id = get_identifier (reswords[i].word);
3533 C_RID_CODE (id) = reswords[i].rid;
3534 C_IS_RESERVED_WORD (id) = 1;
3535 ridpointers [(int) reswords[i].rid] = id;
3539 #define NAME(type) cpp_type2name (type)
3542 yyerror (const char *msgid)
3544 const char *string = _(msgid);
3546 if (last_token == CPP_EOF)
3547 error ("%s at end of input", string);
3548 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3550 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3551 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3552 if (val <= UCHAR_MAX && ISGRAPH (val))
3553 error ("%s before %s'%c'", string, ell, val);
3555 error ("%s before %s'\\x%x'", string, ell, val);
3557 else if (last_token == CPP_STRING
3558 || last_token == CPP_WSTRING)
3559 error ("%s before string constant", string);
3560 else if (last_token == CPP_NUMBER)
3561 error ("%s before numeric constant", string);
3562 else if (last_token == CPP_NAME)
3563 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3565 error ("%s before '%s' token", string, NAME(last_token));
3574 int objc_force_identifier = objc_need_raw_identifier;
3575 OBJC_NEED_RAW_IDENTIFIER (0);
3578 if (C_IS_RESERVED_WORD (yylval.ttype))
3580 enum rid rid_code = C_RID_CODE (yylval.ttype);
3583 /* Turn non-typedefed refs to "id" into plain identifiers; this
3584 allows constructs like "void foo(id id);" to work. */
3585 if (rid_code == RID_ID)
3587 decl = lookup_name (yylval.ttype);
3588 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3592 if (!OBJC_IS_AT_KEYWORD (rid_code)
3593 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3596 /* Return the canonical spelling for this keyword. */
3597 yylval.ttype = ridpointers[(int) rid_code];
3598 return rid_to_yy[(int) rid_code];
3602 decl = lookup_name (yylval.ttype);
3605 if (TREE_CODE (decl) == TYPE_DECL)
3611 tree objc_interface_decl = is_class_name (yylval.ttype);
3612 /* ObjC class names are in the same namespace as variables and
3613 typedefs, and hence are shadowed by local declarations. */
3614 if (objc_interface_decl
3615 && (global_bindings_p ()
3616 || (!objc_force_identifier && !decl)))
3618 yylval.ttype = objc_interface_decl;
3631 last_token = c_lex (&yylval.ttype);
3634 case CPP_EQ: return '=';
3635 case CPP_NOT: return '!';
3636 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3637 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3638 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3639 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3640 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3641 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3642 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3643 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3644 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3645 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3646 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3647 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3649 case CPP_COMPL: return '~';
3650 case CPP_AND_AND: return ANDAND;
3651 case CPP_OR_OR: return OROR;
3652 case CPP_QUERY: return '?';
3653 case CPP_OPEN_PAREN: return '(';
3654 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3655 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3656 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3657 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3659 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3660 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3661 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3662 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3663 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3664 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3665 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3666 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3667 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3668 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3670 case CPP_OPEN_SQUARE: return '[';
3671 case CPP_CLOSE_SQUARE: return ']';
3672 case CPP_OPEN_BRACE: return '{';
3673 case CPP_CLOSE_BRACE: return '}';
3674 case CPP_ELLIPSIS: return ELLIPSIS;
3676 case CPP_PLUS_PLUS: return PLUSPLUS;
3677 case CPP_MINUS_MINUS: return MINUSMINUS;
3678 case CPP_DEREF: return POINTSAT;
3679 case CPP_DOT: return '.';
3681 /* The following tokens may affect the interpretation of any
3682 identifiers following, if doing Objective-C. */
3683 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3684 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3685 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3686 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3692 return yylexname ();
3695 /* This only happens in Objective-C; it must be a keyword. */
3696 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3707 case CPP_OBJC_STRING:
3710 /* These tokens are C++ specific (and will not be generated
3711 in C mode, but let's be cautious). */
3713 case CPP_DEREF_STAR:
3719 /* These tokens should not survive translation phase 4. */
3722 error ("syntax error at '%s' token", NAME(last_token));
3735 timevar_push (TV_LEX);
3737 timevar_pop (TV_LEX);
3741 /* Function used when yydebug is set, to print a token in more detail. */
3744 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3748 fprintf (file, " [%s]", NAME(last_token));
3759 if (IDENTIFIER_POINTER (t))
3760 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3764 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3765 if (TREE_CODE (t) == INTEGER_CST)
3768 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3769 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3775 /* This is not the ideal place to put these, but we have to get them out
3776 of c-lex.c because cp/lex.c has its own versions. */
3778 /* Free malloced parser stacks if necessary. */
3781 free_parser_stacks (void)
3785 /* Parse the file. */
3790 /* In case there were missing closebraces, get us back to the global
3792 while (! global_bindings_p ())
3794 /* __FUNCTION__ is defined at file scope (""). This
3795 call may not be necessary as my tests indicate it
3796 still works without it. */
3797 finish_fname_decls ();
3801 free (malloced_yyss);
3802 free (malloced_yyvs);
3807 #include "gt-c-parse.h"