1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only.
24 @@ifc ... @@end_ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
41 #include "langhooks.h"
46 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
58 /* Like YYERROR but do call yyerror. */
59 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
61 /* Like the default stack expander, except (1) use realloc when possible,
62 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
64 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
65 give malloced_yyvs its proper type. This is ok since all we need from
66 it is to be able to free it. */
68 static short *malloced_yyss;
69 static void *malloced_yyvs;
71 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
76 newsize = *(YYSSZ) *= 2; \
79 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
80 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
84 newss = really_call_malloc (newsize * sizeof (short)); \
85 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
87 memcpy (newss, *(SS), (SSSIZE)); \
89 memcpy (newvs, *(VS), (VSSIZE)); \
91 if (!newss || !newvs) \
98 malloced_yyss = newss; \
99 malloced_yyvs = (void *) newvs; \
105 %union {long itype; tree ttype; enum tree_code code;
106 location_t location; }
108 /* All identifiers that are not reserved words
109 and are not declared typedefs in the current block */
112 /* All identifiers that are declared typedefs in the current block.
113 In some contexts, they are treated just like IDENTIFIER,
114 but they can also serve as typespecs in declarations. */
117 /* Reserved words that specify storage class.
118 yylval contains an IDENTIFIER_NODE which indicates which one. */
119 %token SCSPEC /* Storage class other than static. */
120 %token STATIC /* Static storage class. */
122 /* Reserved words that specify type.
123 yylval contains an IDENTIFIER_NODE which indicates which one. */
126 /* Reserved words that qualify type: "const", "volatile", or "restrict".
127 yylval contains an IDENTIFIER_NODE which indicates which one. */
130 /* Character or numeric constants.
131 yylval is the node for the constant. */
134 /* String constants in raw form.
135 yylval is a STRING_CST node. */
139 /* "...", used for functions with variable arglists. */
142 /* the reserved words */
143 /* SCO include files test "ASM", so use something else. */
144 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
145 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
146 %token ATTRIBUTE EXTENSION LABEL
147 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
148 %token PTR_VALUE PTR_BASE PTR_EXTENT
151 /* Add precedence rules to solve dangling else s/r conflict */
155 /* Define the operator tokens and their precedences.
156 The value is an integer because, if used, it is the tree code
157 to use in the expression made from the operator. */
159 %right <code> ASSIGN '='
160 %right <code> '?' ':'
166 %left <code> EQCOMPARE
167 %left <code> ARITHCOMPARE
168 %left <code> LSHIFT RSHIFT
170 %left <code> '*' '/' '%'
171 %right <code> UNARY PLUSPLUS MINUSMINUS
173 %left <code> POINTSAT '.' '(' '['
175 /* The Objective-C keywords. These are included in C and in
176 Objective C, so that the token codes are the same in both. */
177 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
178 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
179 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
183 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
184 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
186 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
187 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
188 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
189 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
190 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
191 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
192 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
193 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
194 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
195 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
196 %type <ttype> declspecs_ts declspecs_nots
197 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
198 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
199 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
200 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
201 %type <ttype> typespec_nonreserved_nonattr
203 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
204 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl init
205 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
206 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
207 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
208 %type <ttype> any_word
210 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
211 %type <ttype> do_stmt_start poplevel stmt label
213 %type <ttype> c99_block_start c99_block_end
214 %type <ttype> declarator
215 %type <ttype> notype_declarator after_type_declarator
216 %type <ttype> parm_declarator
217 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
218 %type <ttype> array_declarator
220 %type <ttype> structsp_attr structsp_nonattr
221 %type <ttype> component_decl_list component_decl_list2
222 %type <ttype> component_decl components components_notype component_declarator
223 %type <ttype> component_notype_declarator
224 %type <ttype> enumlist enumerator
225 %type <ttype> struct_head union_head enum_head
226 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
227 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
228 %type <ttype> xexpr parms parm firstparm identifiers
230 %type <ttype> parmlist parmlist_1 parmlist_2
231 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
232 %type <ttype> identifiers_or_typenames
234 %type <itype> setspecs setspecs_fp extension
236 %type <location> save_location
239 /* the Objective-C nonterminals */
241 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
242 %type <ttype> methoddecl unaryselector keywordselector selector
243 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
244 %type <ttype> keywordexpr keywordarglist keywordarg
245 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
246 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
247 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
249 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
251 %type <ttype> superclass
252 %type <itype> objc_try_catch_stmt objc_finally_block
256 /* Number of statements (loosely speaking) and compound statements
258 static int stmt_count;
259 static int compstmt_count;
261 /* Input location of the end of the body of last simple_if;
262 used by the stmt-rule immediately after simple_if returns. */
263 static location_t if_stmt_locus;
266 /* List of types and structure classes of the current declaration. */
267 static GTY(()) tree current_declspecs;
268 static GTY(()) tree prefix_attributes;
270 /* List of all the attributes applying to the identifier currently being
271 declared; includes prefix_attributes and possibly some more attributes
272 just after a comma. */
273 static GTY(()) tree all_prefix_attributes;
275 /* Stack of saved values of current_declspecs, prefix_attributes and
276 all_prefix_attributes. */
277 static GTY(()) tree declspec_stack;
279 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
280 should be called from the productions making use of setspecs. */
281 #define PUSH_DECLSPEC_STACK \
283 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
284 all_prefix_attributes), \
289 #define POP_DECLSPEC_STACK \
291 current_declspecs = TREE_VALUE (declspec_stack); \
292 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
293 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
294 declspec_stack = TREE_CHAIN (declspec_stack); \
297 /* For __extension__, save/restore the warning flags which are
298 controlled by __extension__. */
299 #define SAVE_EXT_FLAGS() \
301 | (warn_pointer_arith << 1) \
302 | (warn_traditional << 2) \
305 #define RESTORE_EXT_FLAGS(val) \
307 pedantic = val & 1; \
308 warn_pointer_arith = (val >> 1) & 1; \
309 warn_traditional = (val >> 2) & 1; \
310 flag_iso = (val >> 3) & 1; \
314 /* Objective-C specific parser/lexer information */
316 static enum tree_code objc_inherit_code;
317 static int objc_pq_context = 0, objc_public_flag = 0;
319 /* The following flag is needed to contextualize ObjC lexical analysis.
320 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
321 an identifier to an ObjC class, even if a class with that name
323 static int objc_need_raw_identifier;
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
328 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
331 static bool parsing_iso_function_signature;
333 /* Tell yyparse how to print a token's value, if yydebug is set. */
335 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
337 static void yyprint (FILE *, int, YYSTYPE);
338 static void yyerror (const char *);
339 static int yylexname (void);
340 static inline int _yylex (void);
341 static int yylex (void);
342 static void init_reswords (void);
344 /* Initialisation routine for this file. */
356 pedwarn ("ISO C forbids an empty source file");
361 /* the reason for the strange actions in this rule
362 is so that notype_initdecls when reached via datadef
363 can find a valid list of type and sc specs in $0. */
366 {$<ttype>$ = NULL_TREE; } extdef
367 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
372 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
380 { RESTORE_EXT_FLAGS ($1); }
387 setspecs notype_initdecls ';'
389 error ("ISO C forbids data definition with no type or storage class");
391 warning ("data definition has no type or storage class");
393 POP_DECLSPEC_STACK; }
394 | declspecs_nots setspecs notype_initdecls ';'
395 { POP_DECLSPEC_STACK; }
396 | declspecs_ts setspecs initdecls ';'
397 { POP_DECLSPEC_STACK; }
404 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
408 declspecs_ts setspecs declarator
409 { if (! start_function (current_declspecs, $3,
410 all_prefix_attributes))
413 old_style_parm_decls save_location
414 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
415 store_parm_decls (); }
417 { finish_function ();
418 POP_DECLSPEC_STACK; }
419 | declspecs_ts setspecs declarator error
420 { POP_DECLSPEC_STACK; }
421 | declspecs_nots setspecs notype_declarator
422 { if (! start_function (current_declspecs, $3,
423 all_prefix_attributes))
426 old_style_parm_decls save_location
427 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
428 store_parm_decls (); }
430 { finish_function ();
431 POP_DECLSPEC_STACK; }
432 | declspecs_nots setspecs notype_declarator error
433 { POP_DECLSPEC_STACK; }
434 | setspecs notype_declarator
435 { if (! start_function (NULL_TREE, $2,
436 all_prefix_attributes))
439 old_style_parm_decls save_location
440 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
441 store_parm_decls (); }
443 { finish_function ();
444 POP_DECLSPEC_STACK; }
445 | setspecs notype_declarator error
446 { POP_DECLSPEC_STACK; }
461 { $$ = NEGATE_EXPR; }
465 if (warn_traditional && !in_system_header)
466 warning ("traditional C rejects the unary plus operator");
470 { $$ = PREINCREMENT_EXPR; }
472 { $$ = PREDECREMENT_EXPR; }
474 { $$ = BIT_NOT_EXPR; }
476 { $$ = TRUTH_NOT_EXPR; }
479 expr: nonnull_exprlist
480 { $$ = build_compound_expr ($1); }
491 { $$ = build_tree_list (NULL_TREE, $1); }
492 | nonnull_exprlist ',' expr_no_commas
493 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
498 | '*' cast_expr %prec UNARY
499 { $$ = build_indirect_ref ($2, "unary *"); }
500 /* __extension__ turns off -pedantic for following primary. */
501 | extension cast_expr %prec UNARY
503 RESTORE_EXT_FLAGS ($1); }
504 | unop cast_expr %prec UNARY
505 { $$ = build_unary_op ($1, $2, 0);
506 overflow_warning ($$); }
507 /* Refer to the address of a label as a pointer. */
509 { $$ = finish_label_address_expr ($2); }
510 | sizeof unary_expr %prec UNARY
512 if (TREE_CODE ($2) == COMPONENT_REF
513 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
514 error ("`sizeof' applied to a bit-field");
515 $$ = c_sizeof (TREE_TYPE ($2)); }
516 | sizeof '(' typename ')' %prec HYPERUNARY
518 $$ = c_sizeof (groktypename ($3)); }
519 | alignof unary_expr %prec UNARY
521 $$ = c_alignof_expr ($2); }
522 | alignof '(' typename ')' %prec HYPERUNARY
524 $$ = c_alignof (groktypename ($3)); }
525 | REALPART cast_expr %prec UNARY
526 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
527 | IMAGPART cast_expr %prec UNARY
528 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
532 SIZEOF { skip_evaluation++; }
536 ALIGNOF { skip_evaluation++; }
540 TYPEOF { skip_evaluation++; }
545 | '(' typename ')' cast_expr %prec UNARY
546 { $$ = c_cast_expr ($2, $4); }
551 | expr_no_commas '+' expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas '-' expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas '*' expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas '/' expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas '%' expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas LSHIFT expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas RSHIFT expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas ARITHCOMPARE expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas EQCOMPARE expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '&' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas '|' expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas '^' expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas ANDAND
576 { $1 = (*lang_hooks.truthvalue_conversion)
577 (default_conversion ($1));
578 skip_evaluation += $1 == truthvalue_false_node; }
580 { skip_evaluation -= $1 == truthvalue_false_node;
581 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
582 | expr_no_commas OROR
583 { $1 = (*lang_hooks.truthvalue_conversion)
584 (default_conversion ($1));
585 skip_evaluation += $1 == truthvalue_true_node; }
587 { skip_evaluation -= $1 == truthvalue_true_node;
588 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
590 { $1 = (*lang_hooks.truthvalue_conversion)
591 (default_conversion ($1));
592 skip_evaluation += $1 == truthvalue_false_node; }
594 { skip_evaluation += (($1 == truthvalue_true_node)
595 - ($1 == truthvalue_false_node)); }
597 { skip_evaluation -= $1 == truthvalue_true_node;
598 $$ = build_conditional_expr ($1, $4, $7); }
601 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
602 /* Make sure first operand is calculated only once. */
603 $<ttype>2 = save_expr (default_conversion ($1));
604 $1 = (*lang_hooks.truthvalue_conversion) ($<ttype>2);
605 skip_evaluation += $1 == truthvalue_true_node; }
607 { skip_evaluation -= $1 == truthvalue_true_node;
608 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
609 | expr_no_commas '=' expr_no_commas
611 $$ = build_modify_expr ($1, NOP_EXPR, $3);
612 class = TREE_CODE_CLASS (TREE_CODE ($$));
613 if (IS_EXPR_CODE_CLASS (class))
614 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
616 | expr_no_commas ASSIGN expr_no_commas
618 $$ = build_modify_expr ($1, $2, $3);
619 /* This inhibits warnings in
620 c_common_truthvalue_conversion. */
621 class = TREE_CODE_CLASS (TREE_CODE ($$));
622 if (IS_EXPR_CODE_CLASS (class))
623 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
630 if (yychar == YYEMPTY)
632 $$ = build_external_ref ($1, yychar == '(');
637 { $$ = fname_decl (C_RID_CODE ($$), $$); }
638 | '(' typename ')' '{'
639 { start_init (NULL_TREE, NULL, 0);
640 $2 = groktypename ($2);
641 really_start_incremental_init ($2); }
642 initlist_maybe_comma '}' %prec UNARY
643 { tree constructor = pop_init_level (0);
647 if (pedantic && ! flag_isoc99)
648 pedwarn ("ISO C90 forbids compound literals");
649 $$ = build_compound_literal (type, constructor);
652 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
653 if (IS_EXPR_CODE_CLASS (class))
654 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
657 { $$ = error_mark_node; }
658 | compstmt_primary_start compstmt_nostart ')'
659 { tree saved_last_tree;
662 pedwarn ("ISO C forbids braced-groups within expressions");
663 saved_last_tree = COMPOUND_BODY ($1);
664 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
665 last_tree = saved_last_tree;
666 TREE_CHAIN (last_tree) = NULL_TREE;
668 last_expr_type = void_type_node;
669 $$ = build1 (STMT_EXPR, last_expr_type, $1);
670 TREE_SIDE_EFFECTS ($$) = 1;
672 | compstmt_primary_start error ')'
674 last_tree = COMPOUND_BODY ($1);
675 TREE_CHAIN (last_tree) = NULL_TREE;
676 $$ = error_mark_node;
678 | primary '(' exprlist ')' %prec '.'
679 { $$ = build_function_call ($1, $3); }
680 | VA_ARG '(' expr_no_commas ',' typename ')'
681 { $$ = build_va_arg ($3, groktypename ($5)); }
683 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
689 if (TREE_CODE (c) != INTEGER_CST)
690 error ("first argument to __builtin_choose_expr not a constant");
691 $$ = integer_zerop (c) ? $7 : $5;
693 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
697 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
698 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
700 $$ = comptypes (e1, e2, COMPARE_STRICT)
701 ? build_int_2 (1, 0) : build_int_2 (0, 0);
703 | primary '[' expr ']' %prec '.'
704 { $$ = build_array_ref ($1, $3); }
705 | primary '.' identifier
708 if (!is_public ($1, $3))
709 $$ = error_mark_node;
712 $$ = build_component_ref ($1, $3);
714 | primary POINTSAT identifier
716 tree expr = build_indirect_ref ($1, "->");
719 if (!is_public (expr, $3))
720 $$ = error_mark_node;
723 $$ = build_component_ref (expr, $3);
726 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
728 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
731 { $$ = build_message_expr ($1); }
733 { $$ = build_selector_expr ($1); }
735 { $$ = build_protocol_expr ($1); }
737 { $$ = build_encode_expr ($1); }
739 { $$ = build_objc_string_object ($1); }
743 old_style_parm_decls:
744 old_style_parm_decls_1
746 parsing_iso_function_signature = false; /* Reset after decls. */
750 old_style_parm_decls_1:
753 if (warn_traditional && !in_system_header
754 && parsing_iso_function_signature)
755 warning ("traditional C rejects ISO C style function definitions");
756 if (warn_old_style_definition && !in_system_header
757 && !parsing_iso_function_signature)
758 warning ("old-style parameter declaration");
759 parsing_iso_function_signature = false; /* Reset after warning. */
763 if (warn_old_style_definition && !in_system_header)
764 warning ("old-style parameter declaration");
768 /* The following are analogous to lineno_decl, decls and decl
769 except that they do not allow nested functions.
770 They are used for old-style parm decls. */
772 save_location datadecl
779 | datadecls lineno_datadecl
780 | lineno_datadecl errstmt
783 /* We don't allow prefix attributes here because they cause reduce/reduce
784 conflicts: we can't know whether we're parsing a function decl with
785 attribute suffix, or function defn with attribute prefix on first old
788 declspecs_ts_nosa setspecs initdecls ';'
789 { POP_DECLSPEC_STACK; }
790 | declspecs_nots_nosa setspecs notype_initdecls ';'
791 { POP_DECLSPEC_STACK; }
792 | declspecs_ts_nosa ';'
793 { shadow_tag_warned ($1, 1);
794 pedwarn ("empty declaration"); }
795 | declspecs_nots_nosa ';'
796 { pedwarn ("empty declaration"); }
799 /* This combination which saves a lineno before a decl
800 is the normal thing to use, rather than decl itself.
801 This is to avoid shift/reduce conflicts in contexts
802 where statement labels are allowed. */
808 /* records the type and storage class specs to use for processing
809 the declarators that follow.
810 Maintains a stack of outer-level values of current_declspecs,
811 for the sake of parm declarations nested in function declarators. */
812 setspecs: /* empty */
813 { pending_xref_error ();
815 split_specs_attrs ($<ttype>0,
816 ¤t_declspecs, &prefix_attributes);
817 all_prefix_attributes = prefix_attributes; }
820 /* Possibly attributes after a comma, which should reset all_prefix_attributes
821 to prefix_attributes with these ones chained on the front. */
824 { all_prefix_attributes = chainon ($1, prefix_attributes); }
828 declspecs_ts setspecs initdecls ';'
829 { POP_DECLSPEC_STACK; }
830 | declspecs_nots setspecs notype_initdecls ';'
831 { POP_DECLSPEC_STACK; }
832 | declspecs_ts setspecs nested_function
833 { POP_DECLSPEC_STACK; }
834 | declspecs_nots setspecs notype_nested_function
835 { POP_DECLSPEC_STACK; }
839 { RESTORE_EXT_FLAGS ($1); }
842 /* A list of declaration specifiers. These are:
844 - Storage class specifiers (scspec), which for GCC currently includes
845 function specifiers ("inline").
847 - Type specifiers (typespec_*).
849 - Type qualifiers (TYPE_QUAL).
851 - Attribute specifier lists (attributes).
853 These are stored as a TREE_LIST; the head of the list is the last
854 item in the specifier list. Each entry in the list has either a
855 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
856 is a single other specifier or qualifier; and a TREE_CHAIN that is the
857 rest of the list. TREE_STATIC is set on the list if something other
858 than a storage class specifier or attribute has been seen; this is used
859 to warn for the obsolescent usage of storage class specifiers other than
860 at the start of the list. (Doing this properly would require function
861 specifiers to be handled separately from storage class specifiers.)
863 The various cases below are classified according to:
865 (a) Whether a storage class specifier is included or not; some
866 places in the grammar disallow storage class specifiers (_sc or _nosc).
868 (b) Whether a type specifier has been seen; after a type specifier,
869 a typedef name is an identifier to redeclare (_ts or _nots).
871 (c) Whether the list starts with an attribute; in certain places,
872 the grammar requires specifiers that don't start with an attribute
875 (d) Whether the list ends with an attribute (or a specifier such that
876 any following attribute would have been parsed as part of that specifier);
877 this avoids shift-reduce conflicts in the parsing of attributes
882 (i) Distinguish between function specifiers and storage class specifiers,
883 at least for the purpose of warnings about obsolescent usage.
885 (ii) Halve the number of productions here by eliminating the _sc/_nosc
886 distinction and instead checking where required that storage class
887 specifiers aren't present. */
889 /* Declspecs which contain at least one type specifier or typedef name.
890 (Just `const' or `volatile' is not enough.)
891 A typedef'd name following these is taken as a name to be declared.
892 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
894 declspecs_nosc_nots_nosa_noea:
896 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
897 TREE_STATIC ($$) = 1; }
898 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
899 { $$ = tree_cons (NULL_TREE, $2, $1);
900 TREE_STATIC ($$) = 1; }
901 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
902 { $$ = tree_cons (NULL_TREE, $2, $1);
903 TREE_STATIC ($$) = 1; }
906 declspecs_nosc_nots_nosa_ea:
907 declspecs_nosc_nots_nosa_noea attributes
908 { $$ = tree_cons ($2, NULL_TREE, $1);
909 TREE_STATIC ($$) = TREE_STATIC ($1); }
912 declspecs_nosc_nots_sa_noea:
913 declspecs_nosc_nots_sa_noea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
916 | declspecs_nosc_nots_sa_ea TYPE_QUAL
917 { $$ = tree_cons (NULL_TREE, $2, $1);
918 TREE_STATIC ($$) = 1; }
921 declspecs_nosc_nots_sa_ea:
923 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
924 TREE_STATIC ($$) = 0; }
925 | declspecs_nosc_nots_sa_noea attributes
926 { $$ = tree_cons ($2, NULL_TREE, $1);
927 TREE_STATIC ($$) = TREE_STATIC ($1); }
930 declspecs_nosc_ts_nosa_noea:
932 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
933 TREE_STATIC ($$) = 1; }
934 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
935 { $$ = tree_cons (NULL_TREE, $2, $1);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
938 { $$ = tree_cons (NULL_TREE, $2, $1);
939 TREE_STATIC ($$) = 1; }
940 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
944 { $$ = tree_cons (NULL_TREE, $2, $1);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_nots_nosa_noea typespec_nonattr
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
949 | declspecs_nosc_nots_nosa_ea typespec_nonattr
950 { $$ = tree_cons (NULL_TREE, $2, $1);
951 TREE_STATIC ($$) = 1; }
954 declspecs_nosc_ts_nosa_ea:
956 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
957 TREE_STATIC ($$) = 1; }
958 | declspecs_nosc_ts_nosa_noea attributes
959 { $$ = tree_cons ($2, NULL_TREE, $1);
960 TREE_STATIC ($$) = TREE_STATIC ($1); }
961 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
964 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_nots_nosa_noea typespec_attr
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
970 | declspecs_nosc_nots_nosa_ea typespec_attr
971 { $$ = tree_cons (NULL_TREE, $2, $1);
972 TREE_STATIC ($$) = 1; }
975 declspecs_nosc_ts_sa_noea:
976 declspecs_nosc_ts_sa_noea TYPE_QUAL
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_ts_sa_ea TYPE_QUAL
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
985 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
986 { $$ = tree_cons (NULL_TREE, $2, $1);
987 TREE_STATIC ($$) = 1; }
988 | declspecs_nosc_nots_sa_noea typespec_nonattr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
991 | declspecs_nosc_nots_sa_ea typespec_nonattr
992 { $$ = tree_cons (NULL_TREE, $2, $1);
993 TREE_STATIC ($$) = 1; }
996 declspecs_nosc_ts_sa_ea:
997 declspecs_nosc_ts_sa_noea attributes
998 { $$ = tree_cons ($2, NULL_TREE, $1);
999 TREE_STATIC ($$) = TREE_STATIC ($1); }
1000 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1004 { $$ = tree_cons (NULL_TREE, $2, $1);
1005 TREE_STATIC ($$) = 1; }
1006 | declspecs_nosc_nots_sa_noea typespec_attr
1007 { $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = 1; }
1009 | declspecs_nosc_nots_sa_ea typespec_attr
1010 { $$ = tree_cons (NULL_TREE, $2, $1);
1011 TREE_STATIC ($$) = 1; }
1014 declspecs_sc_nots_nosa_noea:
1016 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1017 TREE_STATIC ($$) = 0; }
1018 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1019 { $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = 1; }
1021 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1022 { $$ = tree_cons (NULL_TREE, $2, $1);
1023 TREE_STATIC ($$) = 1; }
1024 | declspecs_nosc_nots_nosa_noea scspec
1025 { if (extra_warnings && TREE_STATIC ($1))
1026 warning ("`%s' is not at beginning of declaration",
1027 IDENTIFIER_POINTER ($2));
1028 $$ = tree_cons (NULL_TREE, $2, $1);
1029 TREE_STATIC ($$) = TREE_STATIC ($1); }
1030 | declspecs_nosc_nots_nosa_ea scspec
1031 { if (extra_warnings && TREE_STATIC ($1))
1032 warning ("`%s' is not at beginning of declaration",
1033 IDENTIFIER_POINTER ($2));
1034 $$ = tree_cons (NULL_TREE, $2, $1);
1035 TREE_STATIC ($$) = TREE_STATIC ($1); }
1036 | declspecs_sc_nots_nosa_noea scspec
1037 { if (extra_warnings && TREE_STATIC ($1))
1038 warning ("`%s' is not at beginning of declaration",
1039 IDENTIFIER_POINTER ($2));
1040 $$ = tree_cons (NULL_TREE, $2, $1);
1041 TREE_STATIC ($$) = TREE_STATIC ($1); }
1042 | declspecs_sc_nots_nosa_ea scspec
1043 { if (extra_warnings && TREE_STATIC ($1))
1044 warning ("`%s' is not at beginning of declaration",
1045 IDENTIFIER_POINTER ($2));
1046 $$ = tree_cons (NULL_TREE, $2, $1);
1047 TREE_STATIC ($$) = TREE_STATIC ($1); }
1050 declspecs_sc_nots_nosa_ea:
1051 declspecs_sc_nots_nosa_noea attributes
1052 { $$ = tree_cons ($2, NULL_TREE, $1);
1053 TREE_STATIC ($$) = TREE_STATIC ($1); }
1056 declspecs_sc_nots_sa_noea:
1057 declspecs_sc_nots_sa_noea TYPE_QUAL
1058 { $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = 1; }
1060 | declspecs_sc_nots_sa_ea TYPE_QUAL
1061 { $$ = tree_cons (NULL_TREE, $2, $1);
1062 TREE_STATIC ($$) = 1; }
1063 | declspecs_nosc_nots_sa_noea scspec
1064 { if (extra_warnings && TREE_STATIC ($1))
1065 warning ("`%s' is not at beginning of declaration",
1066 IDENTIFIER_POINTER ($2));
1067 $$ = tree_cons (NULL_TREE, $2, $1);
1068 TREE_STATIC ($$) = TREE_STATIC ($1); }
1069 | declspecs_nosc_nots_sa_ea scspec
1070 { if (extra_warnings && TREE_STATIC ($1))
1071 warning ("`%s' is not at beginning of declaration",
1072 IDENTIFIER_POINTER ($2));
1073 $$ = tree_cons (NULL_TREE, $2, $1);
1074 TREE_STATIC ($$) = TREE_STATIC ($1); }
1075 | declspecs_sc_nots_sa_noea scspec
1076 { if (extra_warnings && TREE_STATIC ($1))
1077 warning ("`%s' is not at beginning of declaration",
1078 IDENTIFIER_POINTER ($2));
1079 $$ = tree_cons (NULL_TREE, $2, $1);
1080 TREE_STATIC ($$) = TREE_STATIC ($1); }
1081 | declspecs_sc_nots_sa_ea scspec
1082 { if (extra_warnings && TREE_STATIC ($1))
1083 warning ("`%s' is not at beginning of declaration",
1084 IDENTIFIER_POINTER ($2));
1085 $$ = tree_cons (NULL_TREE, $2, $1);
1086 TREE_STATIC ($$) = TREE_STATIC ($1); }
1089 declspecs_sc_nots_sa_ea:
1090 declspecs_sc_nots_sa_noea attributes
1091 { $$ = tree_cons ($2, NULL_TREE, $1);
1092 TREE_STATIC ($$) = TREE_STATIC ($1); }
1095 declspecs_sc_ts_nosa_noea:
1096 declspecs_sc_ts_nosa_noea TYPE_QUAL
1097 { $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = 1; }
1099 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1100 { $$ = tree_cons (NULL_TREE, $2, $1);
1101 TREE_STATIC ($$) = 1; }
1102 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1103 { $$ = tree_cons (NULL_TREE, $2, $1);
1104 TREE_STATIC ($$) = 1; }
1105 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1106 { $$ = tree_cons (NULL_TREE, $2, $1);
1107 TREE_STATIC ($$) = 1; }
1108 | declspecs_sc_nots_nosa_noea typespec_nonattr
1109 { $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = 1; }
1111 | declspecs_sc_nots_nosa_ea typespec_nonattr
1112 { $$ = tree_cons (NULL_TREE, $2, $1);
1113 TREE_STATIC ($$) = 1; }
1114 | declspecs_nosc_ts_nosa_noea scspec
1115 { if (extra_warnings && TREE_STATIC ($1))
1116 warning ("`%s' is not at beginning of declaration",
1117 IDENTIFIER_POINTER ($2));
1118 $$ = tree_cons (NULL_TREE, $2, $1);
1119 TREE_STATIC ($$) = TREE_STATIC ($1); }
1120 | declspecs_nosc_ts_nosa_ea scspec
1121 { if (extra_warnings && TREE_STATIC ($1))
1122 warning ("`%s' is not at beginning of declaration",
1123 IDENTIFIER_POINTER ($2));
1124 $$ = tree_cons (NULL_TREE, $2, $1);
1125 TREE_STATIC ($$) = TREE_STATIC ($1); }
1126 | declspecs_sc_ts_nosa_noea scspec
1127 { if (extra_warnings && TREE_STATIC ($1))
1128 warning ("`%s' is not at beginning of declaration",
1129 IDENTIFIER_POINTER ($2));
1130 $$ = tree_cons (NULL_TREE, $2, $1);
1131 TREE_STATIC ($$) = TREE_STATIC ($1); }
1132 | declspecs_sc_ts_nosa_ea scspec
1133 { if (extra_warnings && TREE_STATIC ($1))
1134 warning ("`%s' is not at beginning of declaration",
1135 IDENTIFIER_POINTER ($2));
1136 $$ = tree_cons (NULL_TREE, $2, $1);
1137 TREE_STATIC ($$) = TREE_STATIC ($1); }
1140 declspecs_sc_ts_nosa_ea:
1141 declspecs_sc_ts_nosa_noea attributes
1142 { $$ = tree_cons ($2, NULL_TREE, $1);
1143 TREE_STATIC ($$) = TREE_STATIC ($1); }
1144 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1145 { $$ = tree_cons (NULL_TREE, $2, $1);
1146 TREE_STATIC ($$) = 1; }
1147 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_nots_nosa_noea typespec_attr
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1153 | declspecs_sc_nots_nosa_ea typespec_attr
1154 { $$ = tree_cons (NULL_TREE, $2, $1);
1155 TREE_STATIC ($$) = 1; }
1158 declspecs_sc_ts_sa_noea:
1159 declspecs_sc_ts_sa_noea TYPE_QUAL
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_ts_sa_ea TYPE_QUAL
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1166 { $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = 1; }
1168 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1169 { $$ = tree_cons (NULL_TREE, $2, $1);
1170 TREE_STATIC ($$) = 1; }
1171 | declspecs_sc_nots_sa_noea typespec_nonattr
1172 { $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = 1; }
1174 | declspecs_sc_nots_sa_ea typespec_nonattr
1175 { $$ = tree_cons (NULL_TREE, $2, $1);
1176 TREE_STATIC ($$) = 1; }
1177 | declspecs_nosc_ts_sa_noea scspec
1178 { if (extra_warnings && TREE_STATIC ($1))
1179 warning ("`%s' is not at beginning of declaration",
1180 IDENTIFIER_POINTER ($2));
1181 $$ = tree_cons (NULL_TREE, $2, $1);
1182 TREE_STATIC ($$) = TREE_STATIC ($1); }
1183 | declspecs_nosc_ts_sa_ea scspec
1184 { if (extra_warnings && TREE_STATIC ($1))
1185 warning ("`%s' is not at beginning of declaration",
1186 IDENTIFIER_POINTER ($2));
1187 $$ = tree_cons (NULL_TREE, $2, $1);
1188 TREE_STATIC ($$) = TREE_STATIC ($1); }
1189 | declspecs_sc_ts_sa_noea scspec
1190 { if (extra_warnings && TREE_STATIC ($1))
1191 warning ("`%s' is not at beginning of declaration",
1192 IDENTIFIER_POINTER ($2));
1193 $$ = tree_cons (NULL_TREE, $2, $1);
1194 TREE_STATIC ($$) = TREE_STATIC ($1); }
1195 | declspecs_sc_ts_sa_ea scspec
1196 { if (extra_warnings && TREE_STATIC ($1))
1197 warning ("`%s' is not at beginning of declaration",
1198 IDENTIFIER_POINTER ($2));
1199 $$ = tree_cons (NULL_TREE, $2, $1);
1200 TREE_STATIC ($$) = TREE_STATIC ($1); }
1203 declspecs_sc_ts_sa_ea:
1204 declspecs_sc_ts_sa_noea attributes
1205 { $$ = tree_cons ($2, NULL_TREE, $1);
1206 TREE_STATIC ($$) = TREE_STATIC ($1); }
1207 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1208 { $$ = tree_cons (NULL_TREE, $2, $1);
1209 TREE_STATIC ($$) = 1; }
1210 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1211 { $$ = tree_cons (NULL_TREE, $2, $1);
1212 TREE_STATIC ($$) = 1; }
1213 | declspecs_sc_nots_sa_noea typespec_attr
1214 { $$ = tree_cons (NULL_TREE, $2, $1);
1215 TREE_STATIC ($$) = 1; }
1216 | declspecs_sc_nots_sa_ea typespec_attr
1217 { $$ = tree_cons (NULL_TREE, $2, $1);
1218 TREE_STATIC ($$) = 1; }
1221 /* Particular useful classes of declspecs. */
1223 declspecs_nosc_ts_nosa_noea
1224 | declspecs_nosc_ts_nosa_ea
1225 | declspecs_nosc_ts_sa_noea
1226 | declspecs_nosc_ts_sa_ea
1227 | declspecs_sc_ts_nosa_noea
1228 | declspecs_sc_ts_nosa_ea
1229 | declspecs_sc_ts_sa_noea
1230 | declspecs_sc_ts_sa_ea
1234 declspecs_nosc_nots_nosa_noea
1235 | declspecs_nosc_nots_nosa_ea
1236 | declspecs_nosc_nots_sa_noea
1237 | declspecs_nosc_nots_sa_ea
1238 | declspecs_sc_nots_nosa_noea
1239 | declspecs_sc_nots_nosa_ea
1240 | declspecs_sc_nots_sa_noea
1241 | declspecs_sc_nots_sa_ea
1245 declspecs_nosc_ts_nosa_noea
1246 | declspecs_nosc_ts_nosa_ea
1247 | declspecs_sc_ts_nosa_noea
1248 | declspecs_sc_ts_nosa_ea
1251 declspecs_nots_nosa:
1252 declspecs_nosc_nots_nosa_noea
1253 | declspecs_nosc_nots_nosa_ea
1254 | declspecs_sc_nots_nosa_noea
1255 | declspecs_sc_nots_nosa_ea
1259 declspecs_nosc_ts_nosa_noea
1260 | declspecs_nosc_ts_nosa_ea
1261 | declspecs_nosc_ts_sa_noea
1262 | declspecs_nosc_ts_sa_ea
1265 declspecs_nosc_nots:
1266 declspecs_nosc_nots_nosa_noea
1267 | declspecs_nosc_nots_nosa_ea
1268 | declspecs_nosc_nots_sa_noea
1269 | declspecs_nosc_nots_sa_ea
1273 declspecs_nosc_ts_nosa_noea
1274 | declspecs_nosc_ts_nosa_ea
1275 | declspecs_nosc_ts_sa_noea
1276 | declspecs_nosc_ts_sa_ea
1277 | declspecs_nosc_nots_nosa_noea
1278 | declspecs_nosc_nots_nosa_ea
1279 | declspecs_nosc_nots_sa_noea
1280 | declspecs_nosc_nots_sa_ea
1284 declspecs_nosc_nots_nosa_noea
1285 | declspecs_nosc_nots_nosa_ea
1286 | declspecs_nosc_nots_sa_noea
1287 | declspecs_nosc_nots_sa_ea
1288 | declspecs_nosc_ts_nosa_noea
1289 | declspecs_nosc_ts_nosa_ea
1290 | declspecs_nosc_ts_sa_noea
1291 | declspecs_nosc_ts_sa_ea
1292 | declspecs_sc_nots_nosa_noea
1293 | declspecs_sc_nots_nosa_ea
1294 | declspecs_sc_nots_sa_noea
1295 | declspecs_sc_nots_sa_ea
1296 | declspecs_sc_ts_nosa_noea
1297 | declspecs_sc_ts_nosa_ea
1298 | declspecs_sc_ts_sa_noea
1299 | declspecs_sc_ts_sa_ea
1302 /* A (possibly empty) sequence of type qualifiers and attributes. */
1303 maybe_type_quals_attrs:
1306 | declspecs_nosc_nots
1310 /* A type specifier (but not a type qualifier).
1311 Once we have seen one of these in a declaration,
1312 if a typedef name appears then it is being redeclared.
1314 The _reserved versions start with a reserved word and may appear anywhere
1315 in the declaration specifiers; the _nonreserved versions may only
1316 appear before any other type specifiers, and after that are (if names)
1319 FIXME: should the _nonreserved version be restricted to names being
1320 redeclared only? The other entries there relate only the GNU extensions
1321 and Objective C, and are historically parsed thus, and don't make sense
1322 after other type specifiers, but it might be cleaner to count them as
1325 _attr means: specifiers that either end with attributes,
1326 or are such that any following attributes would
1327 be parsed as part of the specifier.
1329 _nonattr: specifiers. */
1332 typespec_reserved_nonattr
1333 | typespec_nonreserved_nonattr
1337 typespec_reserved_attr
1340 typespec_reserved_nonattr:
1342 { OBJC_NEED_RAW_IDENTIFIER (1); }
1346 typespec_reserved_attr:
1350 typespec_nonreserved_nonattr:
1352 { /* For a typedef name, record the meaning, not the name.
1353 In case of `foo foo, bar;'. */
1354 $$ = lookup_name ($1); }
1356 | CLASSNAME protocolrefs
1357 { $$ = get_static_reference ($1, $2); }
1358 | OBJECTNAME protocolrefs
1359 { $$ = get_object_reference ($2); }
1361 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1362 - nisse@lysator.liu.se */
1363 | non_empty_protocolrefs
1364 { $$ = get_object_reference ($1); }
1366 | typeof '(' expr ')'
1367 { skip_evaluation--;
1368 if (TREE_CODE ($3) == COMPONENT_REF
1369 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1370 error ("`typeof' applied to a bit-field");
1371 $$ = TREE_TYPE ($3); }
1372 | typeof '(' typename ')'
1373 { skip_evaluation--; $$ = groktypename ($3); }
1376 /* typespec_nonreserved_attr does not exist. */
1380 | initdecls ',' maybe_resetattrs initdcl
1385 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1389 declarator maybeasm maybe_attribute '='
1390 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1391 chainon ($3, all_prefix_attributes));
1392 start_init ($<ttype>$, $2, global_bindings_p ()); }
1394 /* Note how the declaration of the variable is in effect while its init is parsed! */
1396 finish_decl ($<ttype>5, $6, $2); }
1397 | declarator maybeasm maybe_attribute
1398 { tree d = start_decl ($1, current_declspecs, 0,
1399 chainon ($3, all_prefix_attributes));
1400 finish_decl (d, NULL_TREE, $2);
1405 notype_declarator maybeasm maybe_attribute '='
1406 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1407 chainon ($3, all_prefix_attributes));
1408 start_init ($<ttype>$, $2, global_bindings_p ()); }
1410 /* Note how the declaration of the variable is in effect while its init is parsed! */
1412 finish_decl ($<ttype>5, $6, $2); }
1413 | notype_declarator maybeasm maybe_attribute
1414 { tree d = start_decl ($1, current_declspecs, 0,
1415 chainon ($3, all_prefix_attributes));
1416 finish_decl (d, NULL_TREE, $2); }
1418 /* the * rules are dummies to accept the Apollo extended syntax
1419 so that the header files compile. */
1430 | attributes attribute
1431 { $$ = chainon ($1, $2); }
1435 ATTRIBUTE stop_string_translation
1436 '(' '(' attribute_list ')' ')' start_string_translation
1438 | ATTRIBUTE error start_string_translation
1445 | attribute_list ',' attrib
1446 { $$ = chainon ($1, $3); }
1453 { $$ = build_tree_list ($1, NULL_TREE); }
1454 | any_word '(' IDENTIFIER ')'
1455 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1456 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1457 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1458 | any_word '(' exprlist ')'
1459 { $$ = build_tree_list ($1, $3); }
1462 /* This still leaves out most reserved keywords,
1463 shouldn't we include them? */
1477 /* Initializers. `init' is the entry point. */
1482 { really_start_incremental_init (NULL_TREE); }
1483 initlist_maybe_comma '}'
1484 { $$ = pop_init_level (0); }
1486 { $$ = error_mark_node; }
1489 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1490 initlist_maybe_comma:
1493 pedwarn ("ISO C forbids empty initializer braces"); }
1494 | initlist1 maybecomma
1499 | initlist1 ',' initelt
1502 /* `initelt' is a single element of an initializer.
1503 It may use braces. */
1505 designator_list '=' initval
1506 { if (pedantic && ! flag_isoc99)
1507 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1508 | designator initval
1510 pedwarn ("obsolete use of designated initializer without `='"); }
1512 { set_init_label ($1);
1514 pedwarn ("obsolete use of designated initializer with `:'"); }
1522 { push_init_level (0); }
1523 initlist_maybe_comma '}'
1524 { process_init_element (pop_init_level (0)); }
1526 { process_init_element ($1); }
1532 | designator_list designator
1537 { set_init_label ($2); }
1538 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1539 { set_init_index ($2, $4);
1541 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1542 | '[' expr_no_commas ']'
1543 { set_init_index ($2, NULL_TREE); }
1549 pedwarn ("ISO C forbids nested functions");
1551 push_function_context ();
1552 if (! start_function (current_declspecs, $1,
1553 all_prefix_attributes))
1555 pop_function_context ();
1558 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1560 old_style_parm_decls save_location
1561 { tree decl = current_function_decl;
1562 DECL_SOURCE_LOCATION (decl) = $4;
1563 store_parm_decls (); }
1564 /* This used to use compstmt_or_error.
1565 That caused a bug with input `f(g) int g {}',
1566 where the use of YYERROR1 above caused an error
1567 which then was handled by compstmt_or_error.
1568 There followed a repeated execution of that same rule,
1569 which called YYERROR1 again, and so on. */
1571 { tree decl = current_function_decl;
1573 pop_function_context ();
1574 add_decl_stmt (decl); }
1577 notype_nested_function:
1580 pedwarn ("ISO C forbids nested functions");
1582 push_function_context ();
1583 if (! start_function (current_declspecs, $1,
1584 all_prefix_attributes))
1586 pop_function_context ();
1589 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1591 old_style_parm_decls save_location
1592 { tree decl = current_function_decl;
1593 DECL_SOURCE_LOCATION (decl) = $4;
1594 store_parm_decls (); }
1595 /* This used to use compstmt_or_error.
1596 That caused a bug with input `f(g) int g {}',
1597 where the use of YYERROR1 above caused an error
1598 which then was handled by compstmt_or_error.
1599 There followed a repeated execution of that same rule,
1600 which called YYERROR1 again, and so on. */
1602 { tree decl = current_function_decl;
1604 pop_function_context ();
1605 add_decl_stmt (decl); }
1608 /* Any kind of declarator (thus, all declarators allowed
1609 after an explicit typespec). */
1612 after_type_declarator
1616 /* A declarator that is allowed only after an explicit typespec. */
1618 after_type_declarator:
1619 '(' maybe_attribute after_type_declarator ')'
1620 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1621 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1622 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1623 /* | after_type_declarator '(' error ')' %prec '.'
1624 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1625 poplevel (0, 0, 0); } */
1626 | after_type_declarator array_declarator %prec '.'
1627 { $$ = set_array_declarator_type ($2, $1, 0); }
1628 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1629 { $$ = make_pointer_declarator ($2, $3); }
1636 /* Kinds of declarator that can appear in a parameter list
1637 in addition to notype_declarator. This is like after_type_declarator
1638 but does not allow a typedef name in parentheses as an identifier
1639 (because it would conflict with a function with that typedef as arg). */
1641 parm_declarator_starttypename
1642 | parm_declarator_nostarttypename
1645 parm_declarator_starttypename:
1646 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1647 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1648 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1649 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1650 poplevel (0, 0, 0); } */
1651 | parm_declarator_starttypename array_declarator %prec '.'
1652 { $$ = set_array_declarator_type ($2, $1, 0); }
1659 parm_declarator_nostarttypename:
1660 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1661 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1662 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1663 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1664 poplevel (0, 0, 0); } */
1665 | parm_declarator_nostarttypename array_declarator %prec '.'
1666 { $$ = set_array_declarator_type ($2, $1, 0); }
1667 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1668 { $$ = make_pointer_declarator ($2, $3); }
1669 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1670 { $$ = make_pointer_declarator ($2, $3); }
1671 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1672 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1675 /* A declarator allowed whether or not there has been
1676 an explicit typespec. These cannot redeclare a typedef-name. */
1679 notype_declarator '(' parmlist_or_identifiers %prec '.'
1680 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1681 /* | notype_declarator '(' error ')' %prec '.'
1682 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1683 poplevel (0, 0, 0); } */
1684 | '(' maybe_attribute notype_declarator ')'
1685 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1686 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1687 { $$ = make_pointer_declarator ($2, $3); }
1688 | notype_declarator array_declarator %prec '.'
1689 { $$ = set_array_declarator_type ($2, $1, 0); }
1714 /* structsp_attr: struct/union/enum specifiers that either
1715 end with attributes, or are such that any following attributes would
1716 be parsed as part of the struct/union/enum specifier.
1718 structsp_nonattr: other struct/union/enum specifiers. */
1721 struct_head identifier '{'
1722 { $$ = start_struct (RECORD_TYPE, $2);
1723 /* Start scope of tag before parsing components. */
1725 component_decl_list '}' maybe_attribute
1726 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1727 chainon ($1, $7)); }
1728 | struct_head '{' component_decl_list '}' maybe_attribute
1729 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1730 nreverse ($3), chainon ($1, $5));
1732 | union_head identifier '{'
1733 { $$ = start_struct (UNION_TYPE, $2); }
1734 component_decl_list '}' maybe_attribute
1735 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1736 chainon ($1, $7)); }
1737 | union_head '{' component_decl_list '}' maybe_attribute
1738 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1739 nreverse ($3), chainon ($1, $5));
1741 | enum_head identifier '{'
1742 { $$ = start_enum ($2); }
1743 enumlist maybecomma_warn '}' maybe_attribute
1744 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1745 chainon ($1, $8)); }
1747 { $$ = start_enum (NULL_TREE); }
1748 enumlist maybecomma_warn '}' maybe_attribute
1749 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1750 chainon ($1, $7)); }
1754 struct_head identifier
1755 { $$ = xref_tag (RECORD_TYPE, $2); }
1756 | union_head identifier
1757 { $$ = xref_tag (UNION_TYPE, $2); }
1758 | enum_head identifier
1759 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1760 /* In ISO C, enumerated types can be referred to
1761 only if already defined. */
1762 if (pedantic && !COMPLETE_TYPE_P ($$))
1763 pedwarn ("ISO C forbids forward references to `enum' types"); }
1774 { if (pedantic && ! flag_isoc99)
1775 pedwarn ("comma at end of enumerator list"); }
1778 /* We chain the components in reverse order. They are put in forward
1779 order in structsp_attr.
1781 Note that component_declarator returns single decls, so components
1782 and components_notype can use TREE_CHAIN directly, wheras components
1783 and components_notype return lists (of comma separated decls), so
1784 component_decl_list and component_decl_list2 must use chainon.
1786 The theory behind all this is that there will be more semicolon
1787 separated fields than comma separated fields, and so we'll be
1788 minimizing the number of node traversals required by chainon. */
1790 component_decl_list:
1791 component_decl_list2
1793 | component_decl_list2 component_decl
1794 { $$ = chainon ($2, $1);
1795 pedwarn ("no semicolon at end of struct or union"); }
1798 component_decl_list2: /* empty */
1800 | component_decl_list2 component_decl ';'
1801 { $$ = chainon ($2, $1); }
1802 | component_decl_list2 ';'
1804 pedwarn ("extra semicolon in struct or union specified"); }
1806 /* foo(sizeof(struct{ @defs(ClassName)})); */
1807 | DEFS '(' CLASSNAME ')'
1808 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1813 declspecs_nosc_ts setspecs components
1815 POP_DECLSPEC_STACK; }
1816 | declspecs_nosc_ts setspecs
1818 /* Support for unnamed structs or unions as members of
1819 structs or unions (which is [a] useful and [b] supports
1822 pedwarn ("ISO C doesn't support unnamed structs/unions");
1824 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1825 POP_DECLSPEC_STACK; }
1826 | declspecs_nosc_nots setspecs components_notype
1828 POP_DECLSPEC_STACK; }
1829 | declspecs_nosc_nots
1831 pedwarn ("ISO C forbids member declarations with no members");
1832 shadow_tag_warned ($1, pedantic);
1836 | extension component_decl
1838 RESTORE_EXT_FLAGS ($1); }
1842 component_declarator
1843 | components ',' maybe_resetattrs component_declarator
1844 { TREE_CHAIN ($4) = $1; $$ = $4; }
1848 component_notype_declarator
1849 | components_notype ',' maybe_resetattrs component_notype_declarator
1850 { TREE_CHAIN ($4) = $1; $$ = $4; }
1853 component_declarator:
1854 declarator maybe_attribute
1855 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1856 decl_attributes (&$$,
1857 chainon ($2, all_prefix_attributes), 0); }
1858 | declarator ':' expr_no_commas maybe_attribute
1859 { $$ = grokfield ($1, current_declspecs, $3);
1860 decl_attributes (&$$,
1861 chainon ($4, all_prefix_attributes), 0); }
1862 | ':' expr_no_commas maybe_attribute
1863 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1864 decl_attributes (&$$,
1865 chainon ($3, all_prefix_attributes), 0); }
1868 component_notype_declarator:
1869 notype_declarator maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1871 decl_attributes (&$$,
1872 chainon ($2, all_prefix_attributes), 0); }
1873 | notype_declarator ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield ($1, current_declspecs, $3);
1875 decl_attributes (&$$,
1876 chainon ($4, all_prefix_attributes), 0); }
1877 | ':' expr_no_commas maybe_attribute
1878 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1879 decl_attributes (&$$,
1880 chainon ($3, all_prefix_attributes), 0); }
1883 /* We chain the enumerators in reverse order.
1884 They are put in forward order in structsp_attr. */
1888 | enumlist ',' enumerator
1889 { if ($1 == error_mark_node)
1892 TREE_CHAIN ($3) = $1, $$ = $3; }
1894 { $$ = error_mark_node; }
1900 { $$ = build_enumerator ($1, NULL_TREE); }
1901 | identifier '=' expr_no_commas
1902 { $$ = build_enumerator ($1, $3); }
1907 { pending_xref_error ();
1910 { $$ = build_tree_list ($<ttype>2, $3); }
1913 absdcl: /* an absolute declarator */
1919 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1921 { $$ = build_tree_list (build_tree_list (current_declspecs,
1923 all_prefix_attributes); }
1925 { $$ = build_tree_list (build_tree_list (current_declspecs,
1927 all_prefix_attributes); }
1928 | absdcl1_noea attributes
1929 { $$ = build_tree_list (build_tree_list (current_declspecs,
1931 chainon ($2, all_prefix_attributes)); }
1934 absdcl1: /* a nonempty absolute declarator */
1941 | '*' maybe_type_quals_attrs absdcl1_noea
1942 { $$ = make_pointer_declarator ($2, $3); }
1946 '*' maybe_type_quals_attrs
1947 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1948 | '*' maybe_type_quals_attrs absdcl1_ea
1949 { $$ = make_pointer_declarator ($2, $3); }
1953 '(' maybe_attribute absdcl1 ')'
1954 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1955 | direct_absdcl1 '(' parmlist
1956 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1957 | direct_absdcl1 array_declarator
1958 { $$ = set_array_declarator_type ($2, $1, 1); }
1960 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1962 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1965 /* The [...] part of a declarator for an array type. */
1968 '[' maybe_type_quals_attrs expr_no_commas ']'
1969 { $$ = build_array_declarator ($3, $2, 0, 0); }
1970 | '[' maybe_type_quals_attrs ']'
1971 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1972 | '[' maybe_type_quals_attrs '*' ']'
1973 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1974 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1975 { $$ = build_array_declarator ($4, $3, 1, 0); }
1976 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1977 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1978 { $$ = build_array_declarator ($4, $2, 1, 0); }
1981 /* A nonempty series of declarations and statements (possibly followed by
1982 some labels) that can form the body of a compound statement.
1983 NOTE: we don't allow labels on declarations; this might seem like a
1984 natural extension, but there would be a conflict between attributes
1985 on the label and prefix attributes on the declaration. */
1988 lineno_stmt_decl_or_labels_ending_stmt
1989 | lineno_stmt_decl_or_labels_ending_decl
1990 | lineno_stmt_decl_or_labels_ending_label
1992 error ("label at end of compound statement");
1994 | lineno_stmt_decl_or_labels_ending_error
1997 lineno_stmt_decl_or_labels_ending_stmt:
1999 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2000 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2001 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2002 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2005 lineno_stmt_decl_or_labels_ending_decl:
2007 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2009 if ((pedantic && !flag_isoc99)
2010 || warn_declaration_after_statement)
2011 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2013 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2014 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2017 lineno_stmt_decl_or_labels_ending_label:
2019 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2020 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2021 | lineno_stmt_decl_or_labels_ending_label lineno_label
2022 | lineno_stmt_decl_or_labels_ending_error lineno_label
2025 lineno_stmt_decl_or_labels_ending_error:
2027 | lineno_stmt_decl_or_labels errstmt
2030 lineno_stmt_decl_or_labels:
2031 lineno_stmt_decl_or_labels_ending_stmt
2032 | lineno_stmt_decl_or_labels_ending_decl
2033 | lineno_stmt_decl_or_labels_ending_label
2034 | lineno_stmt_decl_or_labels_ending_error
2040 pushlevel: /* empty */
2043 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2047 poplevel: /* empty */
2050 if (c_dialect_objc ())
2051 objc_clear_super_receiver ();
2053 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2057 /* Start and end blocks created for the new scopes of C99. */
2058 c99_block_start: /* empty */
2061 $$ = c_begin_compound_stmt ();
2064 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2071 /* Productions using c99_block_start and c99_block_end will need to do what's
2072 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2073 $1 is the value of c99_block_start and $2 of c99_block_end. */
2074 c99_block_end: /* empty */
2077 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2078 $$ = poplevel (KEEP_MAYBE, 0, 0);
2079 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2080 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2087 /* Read zero or more forward-declarations for labels
2088 that nested functions can jump to. */
2093 pedwarn ("ISO C forbids label declarations"); }
2098 | label_decls label_decl
2102 LABEL identifiers_or_typenames ';'
2104 for (link = $2; link; link = TREE_CHAIN (link))
2106 tree label = declare_label (TREE_VALUE (link));
2107 C_DECLARED_LABEL_FLAG (label) = 1;
2108 add_decl_stmt (label);
2113 /* This is the body of a function definition.
2114 It causes syntax errors to ignore to the next openbrace. */
2121 compstmt_start: '{' { compstmt_count++;
2122 $$ = c_begin_compound_stmt (); }
2125 compstmt_nostart: '}'
2126 { $$ = convert (void_type_node, integer_zero_node); }
2127 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2128 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2129 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2130 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2134 compstmt_contents_nonempty:
2139 compstmt_primary_start:
2141 { if (current_function_decl == 0)
2143 error ("braced-group within expression allowed only inside a function");
2146 /* We must force a BLOCK for this level
2147 so that, if it is not expanded later,
2148 there is a way to turn off the entire subtree of blocks
2149 that are contained in it. */
2152 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2156 compstmt: compstmt_start compstmt_nostart
2157 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2158 last_expr_type = NULL_TREE;
2162 /* Value is number of statements counted as of the closeparen. */
2164 if_prefix c99_block_lineno_labeled_stmt
2165 { c_finish_then (); }
2166 /* Make sure c_expand_end_cond is run once
2167 for each call to c_expand_start_cond.
2168 Otherwise a crash is likely. */
2173 /* We must build the IF_STMT node before parsing its
2174 condition so that STMT_LINENO refers to the line
2175 containing the "if", and not the line containing
2176 the close-parenthesis.
2178 c_begin_if_stmt returns the IF_STMT node, which
2179 we later pass to c_expand_start_cond to fill
2180 in the condition and other tidbits. */
2182 { $<ttype>$ = c_begin_if_stmt (); }
2184 { c_expand_start_cond ((*lang_hooks.truthvalue_conversion) ($4),
2185 compstmt_count,$<ttype>2);
2186 $<itype>$ = stmt_count;
2187 if_stmt_locus = $<location>-1; }
2190 /* This is a subroutine of stmt.
2191 It is used twice, once for valid DO statements
2192 and once for catching errors in parsing the end test. */
2197 c_in_iteration_stmt++;
2199 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2201 /* In the event that a parse error prevents
2202 parsing the complete do-statement, set the
2203 condition now. Otherwise, we can get crashes at
2204 RTL-generation time. */
2205 DO_COND ($<ttype>$) = error_mark_node; }
2206 c99_block_lineno_labeled_stmt WHILE
2208 RECHAIN_STMTS ($$, DO_BODY ($$));
2209 c_in_iteration_stmt--; }
2212 /* The forced readahead in here is because we might be at the end of a
2213 line, and the line and file won't be bumped until yylex absorbs the
2214 first token on the next line. */
2217 { if (yychar == YYEMPTY)
2219 $$ = input_location; }
2222 lineno_labeled_stmt:
2224 | lineno_label lineno_labeled_stmt
2227 /* Like lineno_labeled_stmt, but a block in C99. */
2228 c99_block_lineno_labeled_stmt:
2229 c99_block_start lineno_labeled_stmt c99_block_end
2231 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2238 STMT_LINENO ($2) = $1.line;
2239 /* ??? We currently have no way of recording
2240 the filename for a statement. This probably
2241 matters little in practice at the moment,
2242 but I suspect that problems will occur when
2243 doing inlining at the tree level. */
2252 STMT_LINENO ($2) = $1.line;
2257 select_or_iter_stmt:
2259 { c_expand_start_else ();
2260 $<itype>1 = stmt_count; }
2261 c99_block_lineno_labeled_stmt
2263 c_expand_end_cond ();
2264 if (extra_warnings && stmt_count == $<itype>1)
2265 warning ("empty body in an else-statement"); }
2266 | simple_if %prec IF
2267 { c_expand_end_cond ();
2268 /* This warning is here instead of in simple_if, because we
2269 do not want a warning if an empty if is followed by an
2270 else statement. Increment stmt_count so we don't
2271 give a second error if this is a nested `if'. */
2272 if (extra_warnings && stmt_count++ == $<itype>1)
2273 warning ("%Hempty body in an if-statement",
2275 /* Make sure c_expand_end_cond is run once
2276 for each call to c_expand_start_cond.
2277 Otherwise a crash is likely. */
2278 | simple_if ELSE error
2279 { c_expand_end_cond (); }
2280 /* We must build the WHILE_STMT node before parsing its
2281 condition so that STMT_LINENO refers to the line
2282 containing the "while", and not the line containing
2283 the close-parenthesis.
2285 c_begin_while_stmt returns the WHILE_STMT node, which
2286 we later pass to c_finish_while_stmt_cond to fill
2287 in the condition and other tidbits. */
2290 $<ttype>$ = c_begin_while_stmt (); }
2292 { c_in_iteration_stmt++;
2293 $4 = (*lang_hooks.truthvalue_conversion) ($4);
2294 c_finish_while_stmt_cond
2295 ((*lang_hooks.truthvalue_conversion) ($4), $<ttype>2);
2296 $<ttype>$ = add_stmt ($<ttype>2); }
2297 c99_block_lineno_labeled_stmt
2298 { c_in_iteration_stmt--;
2299 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2302 { DO_COND ($1) = (*lang_hooks.truthvalue_conversion) ($3); }
2303 | do_stmt_start error
2306 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2307 NULL_TREE, NULL_TREE);
2308 add_stmt ($<ttype>$); }
2311 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2314 FOR_COND ($<ttype>2)
2315 = (*lang_hooks.truthvalue_conversion) ($6); }
2317 { c_in_iteration_stmt++;
2318 FOR_EXPR ($<ttype>2) = $9; }
2319 c99_block_lineno_labeled_stmt
2320 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2321 c_in_iteration_stmt--;}
2322 | SWITCH '(' expr ')'
2324 $<ttype>$ = c_start_case ($3);
2326 c99_block_lineno_labeled_stmt
2333 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2335 { check_for_loop_decls (); }
2344 /* Parse a single real statement, not including any labels. */
2347 { stmt_count++; $$ = $1; }
2350 $$ = c_expand_expr_stmt ($1); }
2351 | c99_block_start select_or_iter_stmt c99_block_end
2353 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2357 if (!(c_in_iteration_stmt || c_in_case_stmt))
2359 error ("break statement not within loop or switch");
2363 $$ = add_stmt (build_break_stmt ()); }
2366 if (!c_in_iteration_stmt)
2368 error ("continue statement not within a loop");
2372 $$ = add_stmt (build_continue_stmt ()); }
2375 $$ = c_expand_return (NULL_TREE); }
2378 $$ = c_expand_return ($2); }
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)); }
2403 $$ = objc_build_throw_stmt ($2);
2407 $$ = objc_build_throw_stmt (NULL_TREE);
2409 | objc_try_catch_stmt
2410 { objc_build_finally_prologue (); }
2412 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2413 | AT_SYNCHRONIZED '(' expr ')'
2414 { objc_build_synchronized_prologue ($3); }
2416 { $$ = objc_build_synchronized_epilogue (); }
2419 objc_try_catch_stmt:
2421 { objc_build_try_epilogue (1); }
2423 { objc_build_catch_epilogue (); $$ = 1; }
2425 { objc_build_try_epilogue (0); $$ = 0; }
2431 { objc_build_try_prologue (); }
2436 objc_catch_list objc_catch_block
2441 AT_CATCH '(' parm ')'
2442 { objc_build_catch_stmt ($3); }
2455 /* Any kind of label, including jump labels and case labels.
2456 ANSI C accepts labels only before statements, but we allow them
2457 also at the end of a compound statement. */
2459 label: CASE expr_no_commas ':'
2461 $$ = do_case ($2, NULL_TREE); }
2462 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2464 $$ = do_case ($2, $4); }
2467 $$ = do_case (NULL_TREE, NULL_TREE); }
2468 | identifier save_location ':' maybe_attribute
2469 { tree label = define_label ($2, $1);
2473 decl_attributes (&label, $4, 0);
2474 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2481 /* Asm expressions and statements */
2483 /* simple_asm_expr is used in restricted contexts, where a full
2484 expression with inputs and outputs does not make sense. */
2486 ASM_KEYWORD stop_string_translation
2487 '(' STRING ')' start_string_translation
2491 /* maybeasm: used for assembly names for declarations */
2498 /* asmdef: asm() outside a function body. */
2501 { assemble_asm ($1); }
2502 | ASM_KEYWORD error start_string_translation ';'
2506 /* Full-blown asm statement with inputs, outputs, clobbers, and
2507 volatile tag allowed. */
2509 ASM_KEYWORD maybe_volatile stop_string_translation
2510 '(' asm_argument ')' start_string_translation ';'
2512 $$ = build_asm_stmt ($2, $5); }
2518 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2519 /* output operands */
2520 | STRING ':' asm_operands
2521 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2522 /* output and input operands */
2523 | STRING ':' asm_operands ':' asm_operands
2524 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2525 /* output and input operands and clobbers */
2526 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2527 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2530 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2536 { if ($1 != ridpointers[RID_VOLATILE])
2538 warning ("%E qualifier ignored on asm", $1);
2546 /* These are the operands other than the first string and colon
2547 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2548 asm_operands: /* empty */
2550 | nonnull_asm_operands
2553 nonnull_asm_operands:
2555 | nonnull_asm_operands ',' asm_operand
2556 { $$ = chainon ($1, $3); }
2560 STRING start_string_translation '(' expr ')' stop_string_translation
2561 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $4); }
2562 | '[' identifier ']' STRING start_string_translation
2563 '(' expr ')' stop_string_translation
2564 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2565 IDENTIFIER_POINTER ($2));
2566 $$ = build_tree_list (build_tree_list ($2, $4), $7); }
2571 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2572 | asm_clobbers ',' STRING
2573 { $$ = tree_cons (NULL_TREE, $3, $1); }
2576 stop_string_translation:
2577 { c_lex_string_translate = false; }
2580 start_string_translation:
2581 { c_lex_string_translate = true; }
2585 /* This is what appears inside the parens in a function declarator.
2586 Its value is a list of ..._TYPE nodes. Attributes must appear here
2587 to avoid a conflict with their appearance after an open parenthesis
2588 in an abstract declarator, as in
2589 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2593 declare_parm_level (); }
2596 poplevel (0, 0, 0); }
2602 { mark_forward_parm_decls (); }
2604 { /* Dummy action so attributes are in known place
2605 on parser stack. */ }
2609 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2612 /* This is what appears inside the parens in a function declarator.
2613 Is value is represented in the format that grokdeclarator expects. */
2614 parmlist_2: /* empty */
2615 { $$ = get_parm_info (0); }
2617 { $$ = get_parm_info (0);
2618 /* Gcc used to allow this as an extension. However, it does
2619 not work for all targets, and thus has been disabled.
2620 Also, since func (...) and func () are indistinguishable,
2621 it caused problems with the code in expand_builtin which
2622 tries to verify that BUILT_IN_NEXT_ARG is being used
2624 error ("ISO C requires a named argument before `...'");
2625 parsing_iso_function_signature = true;
2628 { $$ = get_parm_info (1);
2629 parsing_iso_function_signature = true;
2631 | parms ',' ELLIPSIS
2632 { $$ = get_parm_info (0);
2633 parsing_iso_function_signature = true;
2639 { push_parm_decl ($1); }
2641 { push_parm_decl ($3); }
2644 /* A single parameter declaration or parameter type name,
2645 as found in a parmlist. */
2647 declspecs_ts setspecs parm_declarator maybe_attribute
2648 { $$ = build_tree_list (build_tree_list (current_declspecs,
2650 chainon ($4, all_prefix_attributes));
2651 POP_DECLSPEC_STACK; }
2652 | declspecs_ts setspecs notype_declarator maybe_attribute
2653 { $$ = build_tree_list (build_tree_list (current_declspecs,
2655 chainon ($4, all_prefix_attributes));
2656 POP_DECLSPEC_STACK; }
2657 | declspecs_ts setspecs absdcl_maybe_attribute
2659 POP_DECLSPEC_STACK; }
2660 | declspecs_nots setspecs notype_declarator maybe_attribute
2661 { $$ = build_tree_list (build_tree_list (current_declspecs,
2663 chainon ($4, all_prefix_attributes));
2664 POP_DECLSPEC_STACK; }
2666 | declspecs_nots setspecs absdcl_maybe_attribute
2668 POP_DECLSPEC_STACK; }
2671 /* The first parm, which must suck attributes from off the top of the parser
2674 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2675 { $$ = build_tree_list (build_tree_list (current_declspecs,
2677 chainon ($4, all_prefix_attributes));
2678 POP_DECLSPEC_STACK; }
2679 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2680 { $$ = build_tree_list (build_tree_list (current_declspecs,
2682 chainon ($4, all_prefix_attributes));
2683 POP_DECLSPEC_STACK; }
2684 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2686 POP_DECLSPEC_STACK; }
2687 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2688 { $$ = build_tree_list (build_tree_list (current_declspecs,
2690 chainon ($4, all_prefix_attributes));
2691 POP_DECLSPEC_STACK; }
2693 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2695 POP_DECLSPEC_STACK; }
2700 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2701 all_prefix_attributes = prefix_attributes; }
2704 /* This is used in a function definition
2705 where either a parmlist or an identifier list is ok.
2706 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2707 parmlist_or_identifiers:
2710 declare_parm_level (); }
2711 parmlist_or_identifiers_1
2713 poplevel (0, 0, 0); }
2716 parmlist_or_identifiers_1:
2720 for (t = $1; t; t = TREE_CHAIN (t))
2721 if (TREE_VALUE (t) == NULL_TREE)
2722 error ("`...' in old-style identifier list");
2723 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2725 /* Make sure we have a parmlist after attributes. */
2727 && (TREE_CODE ($$) != TREE_LIST
2728 || TREE_PURPOSE ($$) == 0
2729 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2734 /* A nonempty list of identifiers. */
2737 { $$ = build_tree_list (NULL_TREE, $1); }
2738 | identifiers ',' IDENTIFIER
2739 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2742 /* A nonempty list of identifiers, including typenames. */
2743 identifiers_or_typenames:
2745 { $$ = build_tree_list (NULL_TREE, $1); }
2746 | identifiers_or_typenames ',' identifier
2747 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2752 { $$ = SAVE_EXT_FLAGS();
2754 warn_pointer_arith = 0;
2755 warn_traditional = 0;
2760 /* Objective-C productions. */
2770 if (objc_implementation_context)
2772 finish_class (objc_implementation_context);
2773 objc_ivar_chain = NULL_TREE;
2774 objc_implementation_context = NULL_TREE;
2777 warning ("`@end' must appear in an implementation context");
2781 /* A nonempty list of identifiers. */
2784 { $$ = build_tree_list (NULL_TREE, $1); }
2785 | identifier_list ',' identifier
2786 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2790 CLASS identifier_list ';'
2792 objc_declare_class ($2);
2797 ALIAS identifier identifier ';'
2799 objc_declare_alias ($2, $3);
2804 ':' identifier { $$ = $2; }
2805 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2809 '{' ivar_decl_list '}'
2814 INTERFACE identifier superclass protocolrefs
2816 objc_interface_context = objc_ivar_context
2817 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2818 objc_public_flag = 0;
2822 continue_class (objc_interface_context);
2826 finish_class (objc_interface_context);
2827 objc_interface_context = NULL_TREE;
2830 | IMPLEMENTATION identifier superclass
2832 objc_implementation_context = objc_ivar_context
2833 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2834 objc_public_flag = 0;
2839 = continue_class (objc_implementation_context);
2842 | INTERFACE identifier '(' identifier ')' protocolrefs
2844 objc_interface_context
2845 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2846 continue_class (objc_interface_context);
2850 finish_class (objc_interface_context);
2851 objc_interface_context = NULL_TREE;
2854 | IMPLEMENTATION identifier '(' identifier ')'
2856 objc_implementation_context
2857 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2859 = continue_class (objc_implementation_context);
2864 PROTOCOL identifier protocolrefs
2866 objc_pq_context = 1;
2867 objc_interface_context
2868 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2872 objc_pq_context = 0;
2873 finish_protocol(objc_interface_context);
2874 objc_interface_context = NULL_TREE;
2876 /* The @protocol forward-declaration production introduces a
2877 reduce/reduce conflict on ';', which should be resolved in
2878 favor of the production 'identifier_list -> identifier'. */
2879 | PROTOCOL identifier_list ';'
2881 objc_declare_protocols ($2);
2890 | non_empty_protocolrefs
2893 non_empty_protocolrefs:
2894 ARITHCOMPARE identifier_list ARITHCOMPARE
2896 if ($1 == LT_EXPR && $3 == GT_EXPR)
2904 ivar_decl_list visibility_spec ivar_decls
2909 PRIVATE { objc_public_flag = 2; }
2910 | PROTECTED { objc_public_flag = 0; }
2911 | PUBLIC { objc_public_flag = 1; }
2919 | ivar_decls ivar_decl ';'
2923 pedwarn ("extra semicolon in struct or union specified");
2928 /* There is a shift-reduce conflict here, because `components' may
2929 start with a `typename'. It happens that shifting (the default resolution)
2930 does the right thing, because it treats the `typename' as part of
2931 a `typed_typespecs'.
2933 It is possible that this same technique would allow the distinction
2934 between `notype_initdecls' and `initdecls' to be eliminated.
2935 But I am being cautious and not trying it. */
2938 declspecs_nosc_ts setspecs ivars
2940 POP_DECLSPEC_STACK; }
2941 | declspecs_nosc_nots setspecs ivars
2943 POP_DECLSPEC_STACK; }
2952 | ivars ',' maybe_resetattrs ivar_declarator
2958 $$ = add_instance_variable (objc_ivar_context,
2960 $1, current_declspecs,
2963 | declarator ':' expr_no_commas
2965 $$ = add_instance_variable (objc_ivar_context,
2967 $1, current_declspecs, $3);
2969 | ':' expr_no_commas
2971 $$ = add_instance_variable (objc_ivar_context,
2974 current_declspecs, $2);
2980 { objc_inherit_code = CLASS_METHOD_DECL; }
2982 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2988 objc_pq_context = 1;
2989 if (!objc_implementation_context)
2990 fatal_error ("method definition not in class context");
2994 objc_pq_context = 0;
2995 objc_add_method (objc_implementation_context,
2997 objc_inherit_code == CLASS_METHOD_DECL);
2998 start_method_def ($3);
3002 continue_method_def ();
3006 finish_method_def ();
3010 /* the reason for the strange actions in this rule
3011 is so that notype_initdecls when reached via datadef
3012 can find a valid list of type and sc specs in $0. */
3016 | methodprotolist methodproto
3017 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
3028 /* Remember protocol qualifiers in prototypes. */
3029 objc_pq_context = 1;
3033 /* Forget protocol qualifiers here. */
3034 objc_pq_context = 0;
3035 objc_add_method (objc_interface_context,
3037 objc_inherit_code == CLASS_METHOD_DECL);
3043 '(' typename ')' unaryselector
3045 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3050 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3053 | '(' typename ')' keywordselector optparmlist
3055 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3058 | keywordselector optparmlist
3060 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3064 /* "optarglist" assumes that start_method_def has already been called...
3065 if it is not, the "xdecls" will not be placed in the proper scope */
3072 /* to get around the following situation: "int foo (int a) int b; {}" that
3073 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3088 declspecs_ts setspecs myparms ';'
3089 { POP_DECLSPEC_STACK; }
3091 { shadow_tag ($1); }
3092 | declspecs_nots ';'
3093 { pedwarn ("empty declaration"); }
3098 { push_parm_decl ($1); }
3099 | myparms ',' myparm
3100 { push_parm_decl ($3); }
3103 /* A single parameter declaration or parameter type name,
3104 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3107 parm_declarator maybe_attribute
3108 { $$ = build_tree_list (build_tree_list (current_declspecs,
3110 chainon ($2, all_prefix_attributes)); }
3111 | notype_declarator maybe_attribute
3112 { $$ = build_tree_list (build_tree_list (current_declspecs,
3114 chainon ($2, all_prefix_attributes)); }
3115 | absdcl_maybe_attribute
3126 /* oh what a kludge! */
3127 $$ = objc_ellipsis_node;
3135 /* returns a tree list node generated by get_parm_info */
3148 | keywordselector keyworddecl
3150 $$ = chainon ($1, $2);
3163 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3164 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3165 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3166 | TYPESPEC | TYPE_QUAL
3170 selector ':' '(' typename ')' identifier
3172 $$ = build_keyword_decl ($1, $4, $6);
3175 | selector ':' identifier
3177 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3180 | ':' '(' typename ')' identifier
3182 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3187 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3198 | keywordarglist keywordarg
3200 $$ = chainon ($1, $2);
3208 if (TREE_CHAIN ($1) == NULL_TREE)
3209 /* just return the expr., remove a level of indirection */
3210 $$ = TREE_VALUE ($1);
3212 /* we have a comma expr., we will collapse later */
3218 selector ':' keywordexpr
3220 $$ = build_tree_list ($1, $3);
3224 $$ = build_tree_list (NULL_TREE, $2);
3232 $$ = get_class_reference ($1);
3236 $$ = get_class_reference ($1);
3241 '[' receiver messageargs ']'
3242 { $$ = build_tree_list ($2, $3); }
3252 | keywordnamelist keywordname
3254 $$ = chainon ($1, $2);
3261 $$ = build_tree_list ($1, NULL_TREE);
3265 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3270 SELECTOR '(' selectorarg ')'
3277 PROTOCOL '(' identifier ')'
3283 /* extension to support C-structures in the archiver */
3286 ENCODE '(' typename ')'
3288 $$ = groktypename ($3);
3295 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3296 cpplib.h's token codes into yacc's token codes. */
3298 static enum cpp_ttype last_token;
3300 /* The reserved keyword table. */
3304 ENUM_BITFIELD(rid) rid : 16;
3305 unsigned int disable : 16;
3308 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3310 #define D_C89 0x01 /* not in C89 */
3311 #define D_EXT 0x02 /* GCC extension */
3312 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3313 #define D_OBJC 0x08 /* Objective C only */
3315 static const struct resword reswords[] =
3317 { "_Bool", RID_BOOL, 0 },
3318 { "_Complex", RID_COMPLEX, 0 },
3319 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3320 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3321 { "__alignof", RID_ALIGNOF, 0 },
3322 { "__alignof__", RID_ALIGNOF, 0 },
3323 { "__asm", RID_ASM, 0 },
3324 { "__asm__", RID_ASM, 0 },
3325 { "__attribute", RID_ATTRIBUTE, 0 },
3326 { "__attribute__", RID_ATTRIBUTE, 0 },
3327 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3328 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3329 { "__builtin_va_arg", RID_VA_ARG, 0 },
3330 { "__complex", RID_COMPLEX, 0 },
3331 { "__complex__", RID_COMPLEX, 0 },
3332 { "__const", RID_CONST, 0 },
3333 { "__const__", RID_CONST, 0 },
3334 { "__extension__", RID_EXTENSION, 0 },
3335 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3336 { "__imag", RID_IMAGPART, 0 },
3337 { "__imag__", RID_IMAGPART, 0 },
3338 { "__inline", RID_INLINE, 0 },
3339 { "__inline__", RID_INLINE, 0 },
3340 { "__label__", RID_LABEL, 0 },
3341 { "__ptrbase", RID_PTRBASE, 0 },
3342 { "__ptrbase__", RID_PTRBASE, 0 },
3343 { "__ptrextent", RID_PTREXTENT, 0 },
3344 { "__ptrextent__", RID_PTREXTENT, 0 },
3345 { "__ptrvalue", RID_PTRVALUE, 0 },
3346 { "__ptrvalue__", RID_PTRVALUE, 0 },
3347 { "__real", RID_REALPART, 0 },
3348 { "__real__", RID_REALPART, 0 },
3349 { "__restrict", RID_RESTRICT, 0 },
3350 { "__restrict__", RID_RESTRICT, 0 },
3351 { "__signed", RID_SIGNED, 0 },
3352 { "__signed__", RID_SIGNED, 0 },
3353 { "__thread", RID_THREAD, 0 },
3354 { "__typeof", RID_TYPEOF, 0 },
3355 { "__typeof__", RID_TYPEOF, 0 },
3356 { "__volatile", RID_VOLATILE, 0 },
3357 { "__volatile__", RID_VOLATILE, 0 },
3358 { "asm", RID_ASM, D_EXT },
3359 { "auto", RID_AUTO, 0 },
3360 { "break", RID_BREAK, 0 },
3361 { "case", RID_CASE, 0 },
3362 { "char", RID_CHAR, 0 },
3363 { "const", RID_CONST, 0 },
3364 { "continue", RID_CONTINUE, 0 },
3365 { "default", RID_DEFAULT, 0 },
3366 { "do", RID_DO, 0 },
3367 { "double", RID_DOUBLE, 0 },
3368 { "else", RID_ELSE, 0 },
3369 { "enum", RID_ENUM, 0 },
3370 { "extern", RID_EXTERN, 0 },
3371 { "float", RID_FLOAT, 0 },
3372 { "for", RID_FOR, 0 },
3373 { "goto", RID_GOTO, 0 },
3374 { "if", RID_IF, 0 },
3375 { "inline", RID_INLINE, D_EXT89 },
3376 { "int", RID_INT, 0 },
3377 { "long", RID_LONG, 0 },
3378 { "register", RID_REGISTER, 0 },
3379 { "restrict", RID_RESTRICT, D_C89 },
3380 { "return", RID_RETURN, 0 },
3381 { "short", RID_SHORT, 0 },
3382 { "signed", RID_SIGNED, 0 },
3383 { "sizeof", RID_SIZEOF, 0 },
3384 { "static", RID_STATIC, 0 },
3385 { "struct", RID_STRUCT, 0 },
3386 { "switch", RID_SWITCH, 0 },
3387 { "typedef", RID_TYPEDEF, 0 },
3388 { "typeof", RID_TYPEOF, D_EXT },
3389 { "union", RID_UNION, 0 },
3390 { "unsigned", RID_UNSIGNED, 0 },
3391 { "void", RID_VOID, 0 },
3392 { "volatile", RID_VOLATILE, 0 },
3393 { "while", RID_WHILE, 0 },
3395 { "id", RID_ID, D_OBJC },
3397 /* These objc keywords are recognized only immediately after
3399 { "class", RID_AT_CLASS, D_OBJC },
3400 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3401 { "defs", RID_AT_DEFS, D_OBJC },
3402 { "encode", RID_AT_ENCODE, D_OBJC },
3403 { "end", RID_AT_END, D_OBJC },
3404 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3405 { "interface", RID_AT_INTERFACE, D_OBJC },
3406 { "private", RID_AT_PRIVATE, D_OBJC },
3407 { "protected", RID_AT_PROTECTED, D_OBJC },
3408 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3409 { "public", RID_AT_PUBLIC, D_OBJC },
3410 { "selector", RID_AT_SELECTOR, D_OBJC },
3411 { "throw", RID_AT_THROW, D_OBJC },
3412 { "try", RID_AT_TRY, D_OBJC },
3413 { "catch", RID_AT_CATCH, D_OBJC },
3414 { "finally", RID_AT_FINALLY, D_OBJC },
3415 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3416 /* These are recognized only in protocol-qualifier context
3418 { "bycopy", RID_BYCOPY, D_OBJC },
3419 { "byref", RID_BYREF, D_OBJC },
3420 { "in", RID_IN, D_OBJC },
3421 { "inout", RID_INOUT, D_OBJC },
3422 { "oneway", RID_ONEWAY, D_OBJC },
3423 { "out", RID_OUT, D_OBJC },
3426 #define N_reswords (sizeof reswords / sizeof (struct resword))
3428 /* Table mapping from RID_* constants to yacc token numbers.
3429 Unfortunately we have to have entries for all the keywords in all
3431 static const short rid_to_yy[RID_MAX] =
3433 /* RID_STATIC */ STATIC,
3434 /* RID_UNSIGNED */ TYPESPEC,
3435 /* RID_LONG */ TYPESPEC,
3436 /* RID_CONST */ TYPE_QUAL,
3437 /* RID_EXTERN */ SCSPEC,
3438 /* RID_REGISTER */ SCSPEC,
3439 /* RID_TYPEDEF */ SCSPEC,
3440 /* RID_SHORT */ TYPESPEC,
3441 /* RID_INLINE */ SCSPEC,
3442 /* RID_VOLATILE */ TYPE_QUAL,
3443 /* RID_SIGNED */ TYPESPEC,
3444 /* RID_AUTO */ SCSPEC,
3445 /* RID_RESTRICT */ TYPE_QUAL,
3448 /* RID_COMPLEX */ TYPESPEC,
3449 /* RID_THREAD */ SCSPEC,
3453 /* RID_VIRTUAL */ 0,
3454 /* RID_EXPLICIT */ 0,
3456 /* RID_MUTABLE */ 0,
3459 /* RID_IN */ TYPE_QUAL,
3460 /* RID_OUT */ TYPE_QUAL,
3461 /* RID_INOUT */ TYPE_QUAL,
3462 /* RID_BYCOPY */ TYPE_QUAL,
3463 /* RID_BYREF */ TYPE_QUAL,
3464 /* RID_ONEWAY */ TYPE_QUAL,
3467 /* RID_INT */ TYPESPEC,
3468 /* RID_CHAR */ TYPESPEC,
3469 /* RID_FLOAT */ TYPESPEC,
3470 /* RID_DOUBLE */ TYPESPEC,
3471 /* RID_VOID */ TYPESPEC,
3472 /* RID_ENUM */ ENUM,
3473 /* RID_STRUCT */ STRUCT,
3474 /* RID_UNION */ UNION,
3476 /* RID_ELSE */ ELSE,
3477 /* RID_WHILE */ WHILE,
3480 /* RID_SWITCH */ SWITCH,
3481 /* RID_CASE */ CASE,
3482 /* RID_DEFAULT */ DEFAULT,
3483 /* RID_BREAK */ BREAK,
3484 /* RID_CONTINUE */ CONTINUE,
3485 /* RID_RETURN */ RETURN,
3486 /* RID_GOTO */ GOTO,
3487 /* RID_SIZEOF */ SIZEOF,
3490 /* RID_ASM */ ASM_KEYWORD,
3491 /* RID_TYPEOF */ TYPEOF,
3492 /* RID_ALIGNOF */ ALIGNOF,
3493 /* RID_ATTRIBUTE */ ATTRIBUTE,
3494 /* RID_VA_ARG */ VA_ARG,
3495 /* RID_EXTENSION */ EXTENSION,
3496 /* RID_IMAGPART */ IMAGPART,
3497 /* RID_REALPART */ REALPART,
3498 /* RID_LABEL */ LABEL,
3499 /* RID_PTRBASE */ PTR_BASE,
3500 /* RID_PTREXTENT */ PTR_EXTENT,
3501 /* RID_PTRVALUE */ PTR_VALUE,
3503 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3504 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3506 /* RID_FUNCTION_NAME */ FUNC_NAME,
3507 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3508 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3511 /* RID_BOOL */ TYPESPEC,
3515 /* RID_PRIVATE */ 0,
3516 /* RID_PROTECTED */ 0,
3517 /* RID_TEMPLATE */ 0,
3522 /* RID_NAMESPACE */ 0,
3524 /* RID_OFFSETOF */ 0,
3525 /* RID_OPERATOR */ 0,
3530 /* RID_TYPENAME */ 0,
3535 /* RID_CONSTCAST */ 0,
3536 /* RID_DYNCAST */ 0,
3537 /* RID_REINTCAST */ 0,
3538 /* RID_STATCAST */ 0,
3541 /* RID_ID */ OBJECTNAME,
3542 /* RID_AT_ENCODE */ ENCODE,
3543 /* RID_AT_END */ END,
3544 /* RID_AT_CLASS */ CLASS,
3545 /* RID_AT_ALIAS */ ALIAS,
3546 /* RID_AT_DEFS */ DEFS,
3547 /* RID_AT_PRIVATE */ PRIVATE,
3548 /* RID_AT_PROTECTED */ PROTECTED,
3549 /* RID_AT_PUBLIC */ PUBLIC,
3550 /* RID_AT_PROTOCOL */ PROTOCOL,
3551 /* RID_AT_SELECTOR */ SELECTOR,
3552 /* RID_AT_THROW */ AT_THROW,
3553 /* RID_AT_TRY */ AT_TRY,
3554 /* RID_AT_CATCH */ AT_CATCH,
3555 /* RID_AT_FINALLY */ AT_FINALLY,
3556 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3557 /* RID_AT_INTERFACE */ INTERFACE,
3558 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3562 init_reswords (void)
3566 int mask = (flag_isoc99 ? 0 : D_C89)
3567 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3569 if (!c_dialect_objc ())
3572 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3573 for (i = 0; i < N_reswords; i++)
3575 /* If a keyword is disabled, do not enter it into the table
3576 and so create a canonical spelling that isn't a keyword. */
3577 if (reswords[i].disable & mask)
3580 id = get_identifier (reswords[i].word);
3581 C_RID_CODE (id) = reswords[i].rid;
3582 C_IS_RESERVED_WORD (id) = 1;
3583 ridpointers [(int) reswords[i].rid] = id;
3587 #define NAME(type) cpp_type2name (type)
3590 yyerror (const char *msgid)
3592 c_parse_error (msgid, last_token, yylval.ttype);
3601 int objc_force_identifier = objc_need_raw_identifier;
3602 OBJC_NEED_RAW_IDENTIFIER (0);
3605 if (C_IS_RESERVED_WORD (yylval.ttype))
3607 enum rid rid_code = C_RID_CODE (yylval.ttype);
3610 /* Turn non-typedefed refs to "id" into plain identifiers; this
3611 allows constructs like "void foo(id id);" to work. */
3612 if (rid_code == RID_ID)
3614 decl = lookup_name (yylval.ttype);
3615 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3619 if (!OBJC_IS_AT_KEYWORD (rid_code)
3620 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3623 /* Return the canonical spelling for this keyword. */
3624 yylval.ttype = ridpointers[(int) rid_code];
3625 return rid_to_yy[(int) rid_code];
3629 decl = lookup_name (yylval.ttype);
3632 if (TREE_CODE (decl) == TYPE_DECL)
3638 tree objc_interface_decl = is_class_name (yylval.ttype);
3639 /* ObjC class names are in the same namespace as variables and
3640 typedefs, and hence are shadowed by local declarations. */
3641 if (objc_interface_decl
3642 && (global_bindings_p ()
3643 || (!objc_force_identifier && !decl)))
3645 yylval.ttype = objc_interface_decl;
3658 last_token = c_lex (&yylval.ttype);
3661 case CPP_EQ: return '=';
3662 case CPP_NOT: return '!';
3663 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3664 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3665 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3666 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3667 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3668 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3669 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3670 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3671 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3672 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3673 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3674 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3676 case CPP_COMPL: return '~';
3677 case CPP_AND_AND: return ANDAND;
3678 case CPP_OR_OR: return OROR;
3679 case CPP_QUERY: return '?';
3680 case CPP_OPEN_PAREN: return '(';
3681 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3682 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3683 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3684 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3686 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3687 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3688 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3689 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3690 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3691 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3692 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3693 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3694 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3695 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3697 case CPP_OPEN_SQUARE: return '[';
3698 case CPP_CLOSE_SQUARE: return ']';
3699 case CPP_OPEN_BRACE: return '{';
3700 case CPP_CLOSE_BRACE: return '}';
3701 case CPP_ELLIPSIS: return ELLIPSIS;
3703 case CPP_PLUS_PLUS: return PLUSPLUS;
3704 case CPP_MINUS_MINUS: return MINUSMINUS;
3705 case CPP_DEREF: return POINTSAT;
3706 case CPP_DOT: return '.';
3708 /* The following tokens may affect the interpretation of any
3709 identifiers following, if doing Objective-C. */
3710 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3711 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3712 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3713 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3719 return yylexname ();
3722 /* This only happens in Objective-C; it must be a keyword. */
3723 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3734 case CPP_OBJC_STRING:
3737 /* These tokens are C++ specific (and will not be generated
3738 in C mode, but let's be cautious). */
3740 case CPP_DEREF_STAR:
3746 /* These tokens should not survive translation phase 4. */
3749 error ("syntax error at '%s' token", NAME(last_token));
3762 timevar_push (TV_LEX);
3764 timevar_pop (TV_LEX);
3768 /* Function used when yydebug is set, to print a token in more detail. */
3771 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3775 fprintf (file, " [%s]", NAME(last_token));
3786 if (IDENTIFIER_POINTER (t))
3787 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3791 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3792 if (TREE_CODE (t) == INTEGER_CST)
3795 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3796 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3802 /* This is not the ideal place to put these, but we have to get them out
3803 of c-lex.c because cp/lex.c has its own versions. */
3805 /* Parse the file. */
3810 /* In case there were missing closebraces, get us back to the global
3812 while (! global_bindings_p ())
3814 /* __FUNCTION__ is defined at file scope (""). This
3815 call may not be necessary as my tests indicate it
3816 still works without it. */
3817 finish_fname_decls ();
3821 free (malloced_yyss);
3822 free (malloced_yyvs);
3827 #include "gt-c-parse.h"