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
149 %token FUNC_NAME OFFSETOF
151 /* Add precedence rules to solve dangling else s/r conflict */
155 /* Define the operator tokens and their precedences.
156 The value is an integer because, if used, it is the tree code
157 to use in the expression made from the operator. */
159 %right <code> ASSIGN '='
160 %right <code> '?' ':'
166 %left <code> EQCOMPARE
167 %left <code> ARITHCOMPARE
168 %left <code> LSHIFT RSHIFT
170 %left <code> '*' '/' '%'
171 %right <code> UNARY PLUSPLUS MINUSMINUS
173 %left <code> POINTSAT '.' '(' '['
175 /* The Objective-C keywords. These are included in C and in
176 Objective C, so that the token codes are the same in both. */
177 %token 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
202 %type <ttype> offsetof_member_designator
204 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
205 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl init
206 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
207 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
208 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
209 %type <ttype> any_word
211 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
212 %type <ttype> do_stmt_start pop_scope stmt label
214 %type <ttype> c99_block_start c99_block_end
215 %type <ttype> declarator
216 %type <ttype> notype_declarator after_type_declarator
217 %type <ttype> parm_declarator
218 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
219 %type <ttype> array_declarator
221 %type <ttype> structsp_attr structsp_nonattr
222 %type <ttype> component_decl_list component_decl_list2
223 %type <ttype> component_decl components components_notype component_declarator
224 %type <ttype> component_notype_declarator
225 %type <ttype> enumlist enumerator
226 %type <ttype> struct_head union_head enum_head
227 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
228 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
229 %type <ttype> xexpr parms parm firstparm identifiers
231 %type <ttype> parmlist parmlist_1 parmlist_2
232 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
233 %type <ttype> identifiers_or_typenames
235 %type <itype> setspecs setspecs_fp extension
237 %type <location> save_location
240 /* the Objective-C nonterminals */
242 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
243 %type <ttype> methoddecl unaryselector keywordselector selector
244 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
245 %type <ttype> keywordexpr keywordarglist keywordarg
246 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
247 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
248 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
250 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
252 %type <ttype> superclass
253 %type <itype> objc_try_catch_stmt objc_finally_block
257 /* Number of statements (loosely speaking) and compound statements
259 static int stmt_count;
260 static int compstmt_count;
262 /* Input location of the end of the body of last simple_if;
263 used by the stmt-rule immediately after simple_if returns. */
264 static location_t if_stmt_locus;
267 /* List of types and structure classes of the current declaration. */
268 static GTY(()) tree current_declspecs;
269 static GTY(()) tree prefix_attributes;
271 /* List of all the attributes applying to the identifier currently being
272 declared; includes prefix_attributes and possibly some more attributes
273 just after a comma. */
274 static GTY(()) tree all_prefix_attributes;
276 /* Stack of saved values of current_declspecs, prefix_attributes and
277 all_prefix_attributes. */
278 static GTY(()) tree declspec_stack;
280 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
281 should be called from the productions making use of setspecs. */
282 #define PUSH_DECLSPEC_STACK \
284 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
285 all_prefix_attributes), \
290 #define POP_DECLSPEC_STACK \
292 current_declspecs = TREE_VALUE (declspec_stack); \
293 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
294 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
295 declspec_stack = TREE_CHAIN (declspec_stack); \
298 /* For __extension__, save/restore the warning flags which are
299 controlled by __extension__. */
300 #define SAVE_EXT_FLAGS() \
302 | (warn_pointer_arith << 1) \
303 | (warn_traditional << 2) \
306 #define RESTORE_EXT_FLAGS(val) \
308 pedantic = val & 1; \
309 warn_pointer_arith = (val >> 1) & 1; \
310 warn_traditional = (val >> 2) & 1; \
311 flag_iso = (val >> 3) & 1; \
315 /* Objective-C specific parser/lexer information */
317 static enum tree_code objc_inherit_code;
318 static int objc_pq_context = 0, objc_public_flag = 0;
320 /* The following flag is needed to contextualize ObjC lexical analysis.
321 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
322 an identifier to an ObjC class, even if a class with that name
324 static int objc_need_raw_identifier;
325 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
329 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
332 /* Tell yyparse how to print a token's value, if yydebug is set. */
334 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
336 static void yyprint (FILE *, int, YYSTYPE);
337 static void yyerror (const char *);
338 static int yylexname (void);
339 static inline int _yylex (void);
340 static int yylex (void);
341 static void init_reswords (void);
343 /* Initialisation routine for this file. */
355 pedwarn ("ISO C forbids an empty source file");
360 /* the reason for the strange actions in this rule
361 is so that notype_initdecls when reached via datadef
362 can find a valid list of type and sc specs in $0. */
365 {$<ttype>$ = NULL_TREE; } extdef
366 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
374 { RESTORE_EXT_FLAGS ($1); }
381 setspecs notype_initdecls ';'
383 error ("ISO C forbids data definition with no type or storage class");
385 warning ("data definition has no type or storage class");
387 POP_DECLSPEC_STACK; }
388 | declspecs_nots setspecs notype_initdecls ';'
389 { POP_DECLSPEC_STACK; }
390 | declspecs_ts setspecs initdecls ';'
391 { POP_DECLSPEC_STACK; }
398 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
402 declspecs_ts setspecs declarator
403 { if (! start_function (current_declspecs, $3,
404 all_prefix_attributes))
407 old_style_parm_decls save_location
408 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
409 store_parm_decls (); }
411 { finish_function ();
412 POP_DECLSPEC_STACK; }
413 | declspecs_ts setspecs declarator error
414 { POP_DECLSPEC_STACK; }
415 | declspecs_nots setspecs notype_declarator
416 { if (! start_function (current_declspecs, $3,
417 all_prefix_attributes))
420 old_style_parm_decls save_location
421 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
422 store_parm_decls (); }
424 { finish_function ();
425 POP_DECLSPEC_STACK; }
426 | declspecs_nots setspecs notype_declarator error
427 { POP_DECLSPEC_STACK; }
428 | setspecs notype_declarator
429 { if (! start_function (NULL_TREE, $2,
430 all_prefix_attributes))
433 old_style_parm_decls save_location
434 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
435 store_parm_decls (); }
437 { finish_function ();
438 POP_DECLSPEC_STACK; }
439 | setspecs notype_declarator error
440 { POP_DECLSPEC_STACK; }
455 { $$ = NEGATE_EXPR; }
459 if (warn_traditional && !in_system_header)
460 warning ("traditional C rejects the unary plus operator");
464 { $$ = PREINCREMENT_EXPR; }
466 { $$ = PREDECREMENT_EXPR; }
468 { $$ = BIT_NOT_EXPR; }
470 { $$ = TRUTH_NOT_EXPR; }
473 expr: nonnull_exprlist
474 { $$ = build_compound_expr ($1); }
485 { $$ = build_tree_list (NULL_TREE, $1); }
486 | nonnull_exprlist ',' expr_no_commas
487 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
492 | '*' cast_expr %prec UNARY
493 { $$ = build_indirect_ref ($2, "unary *"); }
494 /* __extension__ turns off -pedantic for following primary. */
495 | extension cast_expr %prec UNARY
497 RESTORE_EXT_FLAGS ($1); }
498 | unop cast_expr %prec UNARY
499 { $$ = build_unary_op ($1, $2, 0);
500 overflow_warning ($$); }
501 /* Refer to the address of a label as a pointer. */
503 { $$ = finish_label_address_expr ($2); }
504 | sizeof unary_expr %prec UNARY
506 if (TREE_CODE ($2) == COMPONENT_REF
507 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
508 error ("`sizeof' applied to a bit-field");
509 $$ = c_sizeof (TREE_TYPE ($2)); }
510 | sizeof '(' typename ')' %prec HYPERUNARY
512 $$ = c_sizeof (groktypename ($3)); }
513 | alignof unary_expr %prec UNARY
515 $$ = c_alignof_expr ($2); }
516 | alignof '(' typename ')' %prec HYPERUNARY
518 $$ = c_alignof (groktypename ($3)); }
519 | REALPART cast_expr %prec UNARY
520 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
521 | IMAGPART cast_expr %prec UNARY
522 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
526 SIZEOF { skip_evaluation++; }
530 ALIGNOF { skip_evaluation++; }
534 TYPEOF { skip_evaluation++; }
539 | '(' typename ')' cast_expr %prec UNARY
540 { $$ = c_cast_expr ($2, $4); }
545 | expr_no_commas '+' expr_no_commas
546 { $$ = parser_build_binary_op ($2, $1, $3); }
547 | expr_no_commas '-' expr_no_commas
548 { $$ = parser_build_binary_op ($2, $1, $3); }
549 | expr_no_commas '*' expr_no_commas
550 { $$ = parser_build_binary_op ($2, $1, $3); }
551 | expr_no_commas '/' expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas '%' expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas LSHIFT expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas RSHIFT expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas ARITHCOMPARE expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas EQCOMPARE expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas '&' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas '|' expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas '^' expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas ANDAND
570 { $1 = lang_hooks.truthvalue_conversion
571 (default_conversion ($1));
572 skip_evaluation += $1 == truthvalue_false_node; }
574 { skip_evaluation -= $1 == truthvalue_false_node;
575 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
576 | expr_no_commas OROR
577 { $1 = lang_hooks.truthvalue_conversion
578 (default_conversion ($1));
579 skip_evaluation += $1 == truthvalue_true_node; }
581 { skip_evaluation -= $1 == truthvalue_true_node;
582 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
584 { $1 = lang_hooks.truthvalue_conversion
585 (default_conversion ($1));
586 skip_evaluation += $1 == truthvalue_false_node; }
588 { skip_evaluation += (($1 == truthvalue_true_node)
589 - ($1 == truthvalue_false_node)); }
591 { skip_evaluation -= $1 == truthvalue_true_node;
592 $$ = build_conditional_expr ($1, $4, $7); }
595 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
596 /* Make sure first operand is calculated only once. */
597 $<ttype>2 = save_expr (default_conversion ($1));
598 $1 = lang_hooks.truthvalue_conversion ($<ttype>2);
599 skip_evaluation += $1 == truthvalue_true_node; }
601 { skip_evaluation -= $1 == truthvalue_true_node;
602 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
603 | expr_no_commas '=' expr_no_commas
605 $$ = build_modify_expr ($1, NOP_EXPR, $3);
606 class = TREE_CODE_CLASS (TREE_CODE ($$));
607 if (IS_EXPR_CODE_CLASS (class))
608 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
610 | expr_no_commas ASSIGN expr_no_commas
612 $$ = build_modify_expr ($1, $2, $3);
613 /* This inhibits warnings in
614 c_common_truthvalue_conversion. */
615 class = TREE_CODE_CLASS (TREE_CODE ($$));
616 if (IS_EXPR_CODE_CLASS (class))
617 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
624 if (yychar == YYEMPTY)
626 $$ = build_external_ref ($1, yychar == '(');
631 { $$ = fname_decl (C_RID_CODE ($$), $$); }
632 | '(' typename ')' '{'
633 { start_init (NULL_TREE, NULL, 0);
634 $2 = groktypename ($2);
635 really_start_incremental_init ($2); }
636 initlist_maybe_comma '}' %prec UNARY
637 { tree constructor = pop_init_level (0);
641 if (pedantic && ! flag_isoc99)
642 pedwarn ("ISO C90 forbids compound literals");
643 $$ = build_compound_literal (type, constructor);
646 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
647 if (IS_EXPR_CODE_CLASS (class))
648 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
651 { $$ = error_mark_node; }
652 | compstmt_primary_start compstmt_nostart ')'
653 { tree saved_last_tree;
656 pedwarn ("ISO C forbids braced-groups within expressions");
657 saved_last_tree = COMPOUND_BODY ($1);
658 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
659 last_tree = saved_last_tree;
660 TREE_CHAIN (last_tree) = NULL_TREE;
662 last_expr_type = void_type_node;
663 $$ = build1 (STMT_EXPR, last_expr_type, $1);
664 TREE_SIDE_EFFECTS ($$) = 1;
665 annotate_with_locus ($$, input_location);
667 | compstmt_primary_start error ')'
669 last_tree = COMPOUND_BODY ($1);
670 TREE_CHAIN (last_tree) = NULL_TREE;
671 $$ = error_mark_node;
673 | primary '(' exprlist ')' %prec '.'
674 { $$ = build_function_call ($1, $3); }
675 | VA_ARG '(' expr_no_commas ',' typename ')'
676 { $$ = build_va_arg ($3, groktypename ($5)); }
678 | OFFSETOF '(' typename ',' offsetof_member_designator ')'
679 { $$ = build_offsetof (groktypename ($3), $5); }
680 | OFFSETOF '(' error ')'
681 { $$ = error_mark_node; }
682 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ','
689 if (TREE_CODE (c) != INTEGER_CST)
690 error ("first argument to __builtin_choose_expr not"
692 $$ = integer_zerop (c) ? $7 : $5;
694 | CHOOSE_EXPR '(' error ')'
695 { $$ = error_mark_node; }
696 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
700 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
701 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
703 $$ = comptypes (e1, e2)
704 ? build_int_2 (1, 0) : build_int_2 (0, 0);
706 | TYPES_COMPATIBLE_P '(' error ')'
707 { $$ = error_mark_node; }
708 | primary '[' expr ']' %prec '.'
709 { $$ = build_array_ref ($1, $3); }
710 | primary '.' identifier
711 { $$ = build_component_ref ($1, $3); }
712 | primary POINTSAT identifier
714 tree expr = build_indirect_ref ($1, "->");
715 $$ = build_component_ref (expr, $3);
718 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
720 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
723 { $$ = build_message_expr ($1); }
725 { $$ = build_selector_expr ($1); }
727 { $$ = build_protocol_expr ($1); }
729 { $$ = build_encode_expr ($1); }
731 { $$ = build_objc_string_object ($1); }
735 /* This is the second argument to __builtin_offsetof. We must have one
736 identifier, and beyond that we want to accept sub structure and sub
737 array references. We return tree list where each element has
738 PURPOSE set for component refs or VALUE set for array refs. We'll
739 turn this into something real inside build_offsetof. */
741 offsetof_member_designator:
743 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
744 | offsetof_member_designator '.' identifier
745 { $$ = tree_cons ($3, NULL_TREE, $1); }
746 | offsetof_member_designator '[' expr ']'
747 { $$ = tree_cons (NULL_TREE, $3, $1); }
750 old_style_parm_decls:
755 /* The following are analogous to lineno_decl, decls and decl
756 except that they do not allow nested functions.
757 They are used for old-style parm decls. */
759 save_location datadecl
766 | datadecls lineno_datadecl
767 | lineno_datadecl errstmt
770 /* We don't allow prefix attributes here because they cause reduce/reduce
771 conflicts: we can't know whether we're parsing a function decl with
772 attribute suffix, or function defn with attribute prefix on first old
775 declspecs_ts_nosa setspecs initdecls ';'
776 { POP_DECLSPEC_STACK; }
777 | declspecs_nots_nosa setspecs notype_initdecls ';'
778 { POP_DECLSPEC_STACK; }
779 | declspecs_ts_nosa ';'
780 { shadow_tag_warned ($1, 1);
781 pedwarn ("empty declaration"); }
782 | declspecs_nots_nosa ';'
783 { pedwarn ("empty declaration"); }
786 /* This combination which saves a lineno before a decl
787 is the normal thing to use, rather than decl itself.
788 This is to avoid shift/reduce conflicts in contexts
789 where statement labels are allowed. */
795 /* records the type and storage class specs to use for processing
796 the declarators that follow.
797 Maintains a stack of outer-level values of current_declspecs,
798 for the sake of parm declarations nested in function declarators. */
799 setspecs: /* empty */
800 { pending_xref_error ();
802 split_specs_attrs ($<ttype>0,
803 ¤t_declspecs, &prefix_attributes);
804 all_prefix_attributes = prefix_attributes; }
807 /* Possibly attributes after a comma, which should reset all_prefix_attributes
808 to prefix_attributes with these ones chained on the front. */
811 { all_prefix_attributes = chainon ($1, prefix_attributes); }
815 declspecs_ts setspecs initdecls ';'
816 { POP_DECLSPEC_STACK; }
817 | declspecs_nots setspecs notype_initdecls ';'
818 { POP_DECLSPEC_STACK; }
819 | declspecs_ts setspecs nested_function
820 { POP_DECLSPEC_STACK; }
821 | declspecs_nots setspecs notype_nested_function
822 { POP_DECLSPEC_STACK; }
826 { RESTORE_EXT_FLAGS ($1); }
829 /* A list of declaration specifiers. These are:
831 - Storage class specifiers (scspec), which for GCC currently includes
832 function specifiers ("inline").
834 - Type specifiers (typespec_*).
836 - Type qualifiers (TYPE_QUAL).
838 - Attribute specifier lists (attributes).
840 These are stored as a TREE_LIST; the head of the list is the last
841 item in the specifier list. Each entry in the list has either a
842 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
843 is a single other specifier or qualifier; and a TREE_CHAIN that is the
844 rest of the list. TREE_STATIC is set on the list if something other
845 than a storage class specifier or attribute has been seen; this is used
846 to warn for the obsolescent usage of storage class specifiers other than
847 at the start of the list. (Doing this properly would require function
848 specifiers to be handled separately from storage class specifiers.)
850 The various cases below are classified according to:
852 (a) Whether a storage class specifier is included or not; some
853 places in the grammar disallow storage class specifiers (_sc or _nosc).
855 (b) Whether a type specifier has been seen; after a type specifier,
856 a typedef name is an identifier to redeclare (_ts or _nots).
858 (c) Whether the list starts with an attribute; in certain places,
859 the grammar requires specifiers that don't start with an attribute
862 (d) Whether the list ends with an attribute (or a specifier such that
863 any following attribute would have been parsed as part of that specifier);
864 this avoids shift-reduce conflicts in the parsing of attributes
869 (i) Distinguish between function specifiers and storage class specifiers,
870 at least for the purpose of warnings about obsolescent usage.
872 (ii) Halve the number of productions here by eliminating the _sc/_nosc
873 distinction and instead checking where required that storage class
874 specifiers aren't present. */
876 /* Declspecs which contain at least one type specifier or typedef name.
877 (Just `const' or `volatile' is not enough.)
878 A typedef'd name following these is taken as a name to be declared.
879 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
881 declspecs_nosc_nots_nosa_noea:
883 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
884 TREE_STATIC ($$) = 1; }
885 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
886 { $$ = tree_cons (NULL_TREE, $2, $1);
887 TREE_STATIC ($$) = 1; }
888 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
889 { $$ = tree_cons (NULL_TREE, $2, $1);
890 TREE_STATIC ($$) = 1; }
893 declspecs_nosc_nots_nosa_ea:
894 declspecs_nosc_nots_nosa_noea attributes
895 { $$ = tree_cons ($2, NULL_TREE, $1);
896 TREE_STATIC ($$) = TREE_STATIC ($1); }
899 declspecs_nosc_nots_sa_noea:
900 declspecs_nosc_nots_sa_noea TYPE_QUAL
901 { $$ = tree_cons (NULL_TREE, $2, $1);
902 TREE_STATIC ($$) = 1; }
903 | declspecs_nosc_nots_sa_ea TYPE_QUAL
904 { $$ = tree_cons (NULL_TREE, $2, $1);
905 TREE_STATIC ($$) = 1; }
908 declspecs_nosc_nots_sa_ea:
910 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
911 TREE_STATIC ($$) = 0; }
912 | declspecs_nosc_nots_sa_noea attributes
913 { $$ = tree_cons ($2, NULL_TREE, $1);
914 TREE_STATIC ($$) = TREE_STATIC ($1); }
917 declspecs_nosc_ts_nosa_noea:
919 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
920 TREE_STATIC ($$) = 1; }
921 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
922 { $$ = tree_cons (NULL_TREE, $2, $1);
923 TREE_STATIC ($$) = 1; }
924 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
927 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
928 { $$ = tree_cons (NULL_TREE, $2, $1);
929 TREE_STATIC ($$) = 1; }
930 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
931 { $$ = tree_cons (NULL_TREE, $2, $1);
932 TREE_STATIC ($$) = 1; }
933 | declspecs_nosc_nots_nosa_noea typespec_nonattr
934 { $$ = tree_cons (NULL_TREE, $2, $1);
935 TREE_STATIC ($$) = 1; }
936 | declspecs_nosc_nots_nosa_ea typespec_nonattr
937 { $$ = tree_cons (NULL_TREE, $2, $1);
938 TREE_STATIC ($$) = 1; }
941 declspecs_nosc_ts_nosa_ea:
943 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_noea attributes
946 { $$ = tree_cons ($2, NULL_TREE, $1);
947 TREE_STATIC ($$) = TREE_STATIC ($1); }
948 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_nots_nosa_noea typespec_attr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
957 | declspecs_nosc_nots_nosa_ea typespec_attr
958 { $$ = tree_cons (NULL_TREE, $2, $1);
959 TREE_STATIC ($$) = 1; }
962 declspecs_nosc_ts_sa_noea:
963 declspecs_nosc_ts_sa_noea TYPE_QUAL
964 { $$ = tree_cons (NULL_TREE, $2, $1);
965 TREE_STATIC ($$) = 1; }
966 | declspecs_nosc_ts_sa_ea TYPE_QUAL
967 { $$ = tree_cons (NULL_TREE, $2, $1);
968 TREE_STATIC ($$) = 1; }
969 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
970 { $$ = tree_cons (NULL_TREE, $2, $1);
971 TREE_STATIC ($$) = 1; }
972 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_nots_sa_noea typespec_nonattr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
978 | declspecs_nosc_nots_sa_ea typespec_nonattr
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
983 declspecs_nosc_ts_sa_ea:
984 declspecs_nosc_ts_sa_noea attributes
985 { $$ = tree_cons ($2, NULL_TREE, $1);
986 TREE_STATIC ($$) = TREE_STATIC ($1); }
987 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_nots_sa_noea typespec_attr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_nots_sa_ea typespec_attr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
1001 declspecs_sc_nots_nosa_noea:
1003 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1004 TREE_STATIC ($$) = 0; }
1005 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1006 { $$ = tree_cons (NULL_TREE, $2, $1);
1007 TREE_STATIC ($$) = 1; }
1008 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1009 { $$ = tree_cons (NULL_TREE, $2, $1);
1010 TREE_STATIC ($$) = 1; }
1011 | declspecs_nosc_nots_nosa_noea scspec
1012 { if (extra_warnings && TREE_STATIC ($1))
1013 warning ("`%s' is not at beginning of declaration",
1014 IDENTIFIER_POINTER ($2));
1015 $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = TREE_STATIC ($1); }
1017 | declspecs_nosc_nots_nosa_ea scspec
1018 { if (extra_warnings && TREE_STATIC ($1))
1019 warning ("`%s' is not at beginning of declaration",
1020 IDENTIFIER_POINTER ($2));
1021 $$ = tree_cons (NULL_TREE, $2, $1);
1022 TREE_STATIC ($$) = TREE_STATIC ($1); }
1023 | declspecs_sc_nots_nosa_noea scspec
1024 { if (extra_warnings && TREE_STATIC ($1))
1025 warning ("`%s' is not at beginning of declaration",
1026 IDENTIFIER_POINTER ($2));
1027 $$ = tree_cons (NULL_TREE, $2, $1);
1028 TREE_STATIC ($$) = TREE_STATIC ($1); }
1029 | declspecs_sc_nots_nosa_ea scspec
1030 { if (extra_warnings && TREE_STATIC ($1))
1031 warning ("`%s' is not at beginning of declaration",
1032 IDENTIFIER_POINTER ($2));
1033 $$ = tree_cons (NULL_TREE, $2, $1);
1034 TREE_STATIC ($$) = TREE_STATIC ($1); }
1037 declspecs_sc_nots_nosa_ea:
1038 declspecs_sc_nots_nosa_noea attributes
1039 { $$ = tree_cons ($2, NULL_TREE, $1);
1040 TREE_STATIC ($$) = TREE_STATIC ($1); }
1043 declspecs_sc_nots_sa_noea:
1044 declspecs_sc_nots_sa_noea TYPE_QUAL
1045 { $$ = tree_cons (NULL_TREE, $2, $1);
1046 TREE_STATIC ($$) = 1; }
1047 | declspecs_sc_nots_sa_ea TYPE_QUAL
1048 { $$ = tree_cons (NULL_TREE, $2, $1);
1049 TREE_STATIC ($$) = 1; }
1050 | declspecs_nosc_nots_sa_noea scspec
1051 { if (extra_warnings && TREE_STATIC ($1))
1052 warning ("`%s' is not at beginning of declaration",
1053 IDENTIFIER_POINTER ($2));
1054 $$ = tree_cons (NULL_TREE, $2, $1);
1055 TREE_STATIC ($$) = TREE_STATIC ($1); }
1056 | declspecs_nosc_nots_sa_ea scspec
1057 { if (extra_warnings && TREE_STATIC ($1))
1058 warning ("`%s' is not at beginning of declaration",
1059 IDENTIFIER_POINTER ($2));
1060 $$ = tree_cons (NULL_TREE, $2, $1);
1061 TREE_STATIC ($$) = TREE_STATIC ($1); }
1062 | declspecs_sc_nots_sa_noea scspec
1063 { if (extra_warnings && TREE_STATIC ($1))
1064 warning ("`%s' is not at beginning of declaration",
1065 IDENTIFIER_POINTER ($2));
1066 $$ = tree_cons (NULL_TREE, $2, $1);
1067 TREE_STATIC ($$) = TREE_STATIC ($1); }
1068 | declspecs_sc_nots_sa_ea scspec
1069 { if (extra_warnings && TREE_STATIC ($1))
1070 warning ("`%s' is not at beginning of declaration",
1071 IDENTIFIER_POINTER ($2));
1072 $$ = tree_cons (NULL_TREE, $2, $1);
1073 TREE_STATIC ($$) = TREE_STATIC ($1); }
1076 declspecs_sc_nots_sa_ea:
1077 declspecs_sc_nots_sa_noea attributes
1078 { $$ = tree_cons ($2, NULL_TREE, $1);
1079 TREE_STATIC ($$) = TREE_STATIC ($1); }
1082 declspecs_sc_ts_nosa_noea:
1083 declspecs_sc_ts_nosa_noea TYPE_QUAL
1084 { $$ = tree_cons (NULL_TREE, $2, $1);
1085 TREE_STATIC ($$) = 1; }
1086 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1087 { $$ = tree_cons (NULL_TREE, $2, $1);
1088 TREE_STATIC ($$) = 1; }
1089 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1090 { $$ = tree_cons (NULL_TREE, $2, $1);
1091 TREE_STATIC ($$) = 1; }
1092 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1093 { $$ = tree_cons (NULL_TREE, $2, $1);
1094 TREE_STATIC ($$) = 1; }
1095 | declspecs_sc_nots_nosa_noea typespec_nonattr
1096 { $$ = tree_cons (NULL_TREE, $2, $1);
1097 TREE_STATIC ($$) = 1; }
1098 | declspecs_sc_nots_nosa_ea typespec_nonattr
1099 { $$ = tree_cons (NULL_TREE, $2, $1);
1100 TREE_STATIC ($$) = 1; }
1101 | declspecs_nosc_ts_nosa_noea scspec
1102 { if (extra_warnings && TREE_STATIC ($1))
1103 warning ("`%s' is not at beginning of declaration",
1104 IDENTIFIER_POINTER ($2));
1105 $$ = tree_cons (NULL_TREE, $2, $1);
1106 TREE_STATIC ($$) = TREE_STATIC ($1); }
1107 | declspecs_nosc_ts_nosa_ea scspec
1108 { if (extra_warnings && TREE_STATIC ($1))
1109 warning ("`%s' is not at beginning of declaration",
1110 IDENTIFIER_POINTER ($2));
1111 $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = TREE_STATIC ($1); }
1113 | declspecs_sc_ts_nosa_noea scspec
1114 { if (extra_warnings && TREE_STATIC ($1))
1115 warning ("`%s' is not at beginning of declaration",
1116 IDENTIFIER_POINTER ($2));
1117 $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = TREE_STATIC ($1); }
1119 | declspecs_sc_ts_nosa_ea scspec
1120 { if (extra_warnings && TREE_STATIC ($1))
1121 warning ("`%s' is not at beginning of declaration",
1122 IDENTIFIER_POINTER ($2));
1123 $$ = tree_cons (NULL_TREE, $2, $1);
1124 TREE_STATIC ($$) = TREE_STATIC ($1); }
1127 declspecs_sc_ts_nosa_ea:
1128 declspecs_sc_ts_nosa_noea attributes
1129 { $$ = tree_cons ($2, NULL_TREE, $1);
1130 TREE_STATIC ($$) = TREE_STATIC ($1); }
1131 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1132 { $$ = tree_cons (NULL_TREE, $2, $1);
1133 TREE_STATIC ($$) = 1; }
1134 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1135 { $$ = tree_cons (NULL_TREE, $2, $1);
1136 TREE_STATIC ($$) = 1; }
1137 | declspecs_sc_nots_nosa_noea typespec_attr
1138 { $$ = tree_cons (NULL_TREE, $2, $1);
1139 TREE_STATIC ($$) = 1; }
1140 | declspecs_sc_nots_nosa_ea typespec_attr
1141 { $$ = tree_cons (NULL_TREE, $2, $1);
1142 TREE_STATIC ($$) = 1; }
1145 declspecs_sc_ts_sa_noea:
1146 declspecs_sc_ts_sa_noea TYPE_QUAL
1147 { $$ = tree_cons (NULL_TREE, $2, $1);
1148 TREE_STATIC ($$) = 1; }
1149 | declspecs_sc_ts_sa_ea TYPE_QUAL
1150 { $$ = tree_cons (NULL_TREE, $2, $1);
1151 TREE_STATIC ($$) = 1; }
1152 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1153 { $$ = tree_cons (NULL_TREE, $2, $1);
1154 TREE_STATIC ($$) = 1; }
1155 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_nots_sa_noea typespec_nonattr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1161 | declspecs_sc_nots_sa_ea typespec_nonattr
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1164 | declspecs_nosc_ts_sa_noea scspec
1165 { if (extra_warnings && TREE_STATIC ($1))
1166 warning ("`%s' is not at beginning of declaration",
1167 IDENTIFIER_POINTER ($2));
1168 $$ = tree_cons (NULL_TREE, $2, $1);
1169 TREE_STATIC ($$) = TREE_STATIC ($1); }
1170 | declspecs_nosc_ts_sa_ea scspec
1171 { if (extra_warnings && TREE_STATIC ($1))
1172 warning ("`%s' is not at beginning of declaration",
1173 IDENTIFIER_POINTER ($2));
1174 $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = TREE_STATIC ($1); }
1176 | declspecs_sc_ts_sa_noea scspec
1177 { if (extra_warnings && TREE_STATIC ($1))
1178 warning ("`%s' is not at beginning of declaration",
1179 IDENTIFIER_POINTER ($2));
1180 $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = TREE_STATIC ($1); }
1182 | declspecs_sc_ts_sa_ea scspec
1183 { if (extra_warnings && TREE_STATIC ($1))
1184 warning ("`%s' is not at beginning of declaration",
1185 IDENTIFIER_POINTER ($2));
1186 $$ = tree_cons (NULL_TREE, $2, $1);
1187 TREE_STATIC ($$) = TREE_STATIC ($1); }
1190 declspecs_sc_ts_sa_ea:
1191 declspecs_sc_ts_sa_noea attributes
1192 { $$ = tree_cons ($2, NULL_TREE, $1);
1193 TREE_STATIC ($$) = TREE_STATIC ($1); }
1194 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1195 { $$ = tree_cons (NULL_TREE, $2, $1);
1196 TREE_STATIC ($$) = 1; }
1197 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1198 { $$ = tree_cons (NULL_TREE, $2, $1);
1199 TREE_STATIC ($$) = 1; }
1200 | declspecs_sc_nots_sa_noea typespec_attr
1201 { $$ = tree_cons (NULL_TREE, $2, $1);
1202 TREE_STATIC ($$) = 1; }
1203 | declspecs_sc_nots_sa_ea typespec_attr
1204 { $$ = tree_cons (NULL_TREE, $2, $1);
1205 TREE_STATIC ($$) = 1; }
1208 /* Particular useful classes of declspecs. */
1210 declspecs_nosc_ts_nosa_noea
1211 | declspecs_nosc_ts_nosa_ea
1212 | declspecs_nosc_ts_sa_noea
1213 | declspecs_nosc_ts_sa_ea
1214 | declspecs_sc_ts_nosa_noea
1215 | declspecs_sc_ts_nosa_ea
1216 | declspecs_sc_ts_sa_noea
1217 | declspecs_sc_ts_sa_ea
1221 declspecs_nosc_nots_nosa_noea
1222 | declspecs_nosc_nots_nosa_ea
1223 | declspecs_nosc_nots_sa_noea
1224 | declspecs_nosc_nots_sa_ea
1225 | declspecs_sc_nots_nosa_noea
1226 | declspecs_sc_nots_nosa_ea
1227 | declspecs_sc_nots_sa_noea
1228 | declspecs_sc_nots_sa_ea
1232 declspecs_nosc_ts_nosa_noea
1233 | declspecs_nosc_ts_nosa_ea
1234 | declspecs_sc_ts_nosa_noea
1235 | declspecs_sc_ts_nosa_ea
1238 declspecs_nots_nosa:
1239 declspecs_nosc_nots_nosa_noea
1240 | declspecs_nosc_nots_nosa_ea
1241 | declspecs_sc_nots_nosa_noea
1242 | declspecs_sc_nots_nosa_ea
1246 declspecs_nosc_ts_nosa_noea
1247 | declspecs_nosc_ts_nosa_ea
1248 | declspecs_nosc_ts_sa_noea
1249 | declspecs_nosc_ts_sa_ea
1252 declspecs_nosc_nots:
1253 declspecs_nosc_nots_nosa_noea
1254 | declspecs_nosc_nots_nosa_ea
1255 | declspecs_nosc_nots_sa_noea
1256 | declspecs_nosc_nots_sa_ea
1260 declspecs_nosc_ts_nosa_noea
1261 | declspecs_nosc_ts_nosa_ea
1262 | declspecs_nosc_ts_sa_noea
1263 | declspecs_nosc_ts_sa_ea
1264 | declspecs_nosc_nots_nosa_noea
1265 | declspecs_nosc_nots_nosa_ea
1266 | declspecs_nosc_nots_sa_noea
1267 | declspecs_nosc_nots_sa_ea
1271 declspecs_nosc_nots_nosa_noea
1272 | declspecs_nosc_nots_nosa_ea
1273 | declspecs_nosc_nots_sa_noea
1274 | declspecs_nosc_nots_sa_ea
1275 | declspecs_nosc_ts_nosa_noea
1276 | declspecs_nosc_ts_nosa_ea
1277 | declspecs_nosc_ts_sa_noea
1278 | declspecs_nosc_ts_sa_ea
1279 | declspecs_sc_nots_nosa_noea
1280 | declspecs_sc_nots_nosa_ea
1281 | declspecs_sc_nots_sa_noea
1282 | declspecs_sc_nots_sa_ea
1283 | declspecs_sc_ts_nosa_noea
1284 | declspecs_sc_ts_nosa_ea
1285 | declspecs_sc_ts_sa_noea
1286 | declspecs_sc_ts_sa_ea
1289 /* A (possibly empty) sequence of type qualifiers and attributes. */
1290 maybe_type_quals_attrs:
1293 | declspecs_nosc_nots
1297 /* A type specifier (but not a type qualifier).
1298 Once we have seen one of these in a declaration,
1299 if a typedef name appears then it is being redeclared.
1301 The _reserved versions start with a reserved word and may appear anywhere
1302 in the declaration specifiers; the _nonreserved versions may only
1303 appear before any other type specifiers, and after that are (if names)
1306 FIXME: should the _nonreserved version be restricted to names being
1307 redeclared only? The other entries there relate only the GNU extensions
1308 and Objective C, and are historically parsed thus, and don't make sense
1309 after other type specifiers, but it might be cleaner to count them as
1312 _attr means: specifiers that either end with attributes,
1313 or are such that any following attributes would
1314 be parsed as part of the specifier.
1316 _nonattr: specifiers. */
1319 typespec_reserved_nonattr
1320 | typespec_nonreserved_nonattr
1324 typespec_reserved_attr
1327 typespec_reserved_nonattr:
1329 { OBJC_NEED_RAW_IDENTIFIER (1); }
1333 typespec_reserved_attr:
1337 typespec_nonreserved_nonattr:
1339 { /* For a typedef name, record the meaning, not the name.
1340 In case of `foo foo, bar;'. */
1341 $$ = lookup_name ($1); }
1343 | CLASSNAME protocolrefs
1344 { $$ = get_static_reference ($1, $2); }
1345 | OBJECTNAME protocolrefs
1346 { $$ = get_object_reference ($2); }
1348 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1349 - nisse@lysator.liu.se */
1350 | non_empty_protocolrefs
1351 { $$ = get_object_reference ($1); }
1353 | typeof '(' expr ')'
1354 { skip_evaluation--;
1355 if (TREE_CODE ($3) == COMPONENT_REF
1356 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1357 error ("`typeof' applied to a bit-field");
1358 $$ = TREE_TYPE ($3); }
1359 | typeof '(' typename ')'
1360 { skip_evaluation--; $$ = groktypename ($3); }
1363 /* typespec_nonreserved_attr does not exist. */
1367 | initdecls ',' maybe_resetattrs initdcl
1372 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1376 declarator maybeasm maybe_attribute '='
1377 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1378 chainon ($3, all_prefix_attributes));
1379 start_init ($<ttype>$, $2, global_bindings_p ()); }
1381 /* Note how the declaration of the variable is in effect while its init is parsed! */
1383 finish_decl ($<ttype>5, $6, $2); }
1384 | declarator maybeasm maybe_attribute
1385 { tree d = start_decl ($1, current_declspecs, 0,
1386 chainon ($3, all_prefix_attributes));
1387 finish_decl (d, NULL_TREE, $2);
1392 notype_declarator maybeasm maybe_attribute '='
1393 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1394 chainon ($3, all_prefix_attributes));
1395 start_init ($<ttype>$, $2, global_bindings_p ()); }
1397 /* Note how the declaration of the variable is in effect while its init is parsed! */
1399 finish_decl ($<ttype>5, $6, $2); }
1400 | notype_declarator maybeasm maybe_attribute
1401 { tree d = start_decl ($1, current_declspecs, 0,
1402 chainon ($3, all_prefix_attributes));
1403 finish_decl (d, NULL_TREE, $2); }
1405 /* the * rules are dummies to accept the Apollo extended syntax
1406 so that the header files compile. */
1417 | attributes attribute
1418 { $$ = chainon ($1, $2); }
1422 ATTRIBUTE stop_string_translation
1423 '(' '(' attribute_list ')' ')' start_string_translation
1425 | ATTRIBUTE error start_string_translation
1432 | attribute_list ',' attrib
1433 { $$ = chainon ($1, $3); }
1440 { $$ = build_tree_list ($1, NULL_TREE); }
1441 | any_word '(' IDENTIFIER ')'
1442 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1443 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1444 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1445 | any_word '(' exprlist ')'
1446 { $$ = build_tree_list ($1, $3); }
1449 /* This still leaves out most reserved keywords,
1450 shouldn't we include them? */
1464 /* Initializers. `init' is the entry point. */
1469 { really_start_incremental_init (NULL_TREE); }
1470 initlist_maybe_comma '}'
1471 { $$ = pop_init_level (0); }
1473 { $$ = error_mark_node; }
1476 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1477 initlist_maybe_comma:
1480 pedwarn ("ISO C forbids empty initializer braces"); }
1481 | initlist1 maybecomma
1486 | initlist1 ',' initelt
1489 /* `initelt' is a single element of an initializer.
1490 It may use braces. */
1492 designator_list '=' initval
1493 { if (pedantic && ! flag_isoc99)
1494 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1495 | designator initval
1497 pedwarn ("obsolete use of designated initializer without `='"); }
1499 { set_init_label ($1);
1501 pedwarn ("obsolete use of designated initializer with `:'"); }
1509 { push_init_level (0); }
1510 initlist_maybe_comma '}'
1511 { process_init_element (pop_init_level (0)); }
1513 { process_init_element ($1); }
1519 | designator_list designator
1524 { set_init_label ($2); }
1525 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1526 { set_init_index ($2, $4);
1528 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1529 | '[' expr_no_commas ']'
1530 { set_init_index ($2, NULL_TREE); }
1536 pedwarn ("ISO C forbids nested functions");
1538 push_function_context ();
1539 if (! start_function (current_declspecs, $1,
1540 all_prefix_attributes))
1542 pop_function_context ();
1546 old_style_parm_decls save_location
1547 { tree decl = current_function_decl;
1548 DECL_SOURCE_LOCATION (decl) = $4;
1549 store_parm_decls (); }
1550 /* This used to use compstmt_or_error.
1551 That caused a bug with input `f(g) int g {}',
1552 where the use of YYERROR1 above caused an error
1553 which then was handled by compstmt_or_error.
1554 There followed a repeated execution of that same rule,
1555 which called YYERROR1 again, and so on. */
1557 { tree decl = current_function_decl;
1559 pop_function_context ();
1560 add_decl_stmt (decl); }
1563 notype_nested_function:
1566 pedwarn ("ISO C forbids nested functions");
1568 push_function_context ();
1569 if (! start_function (current_declspecs, $1,
1570 all_prefix_attributes))
1572 pop_function_context ();
1576 old_style_parm_decls save_location
1577 { tree decl = current_function_decl;
1578 DECL_SOURCE_LOCATION (decl) = $4;
1579 store_parm_decls (); }
1580 /* This used to use compstmt_or_error.
1581 That caused a bug with input `f(g) int g {}',
1582 where the use of YYERROR1 above caused an error
1583 which then was handled by compstmt_or_error.
1584 There followed a repeated execution of that same rule,
1585 which called YYERROR1 again, and so on. */
1587 { tree decl = current_function_decl;
1589 pop_function_context ();
1590 add_decl_stmt (decl); }
1593 /* Any kind of declarator (thus, all declarators allowed
1594 after an explicit typespec). */
1597 after_type_declarator
1601 /* A declarator that is allowed only after an explicit typespec. */
1603 after_type_declarator:
1604 '(' maybe_attribute after_type_declarator ')'
1605 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1606 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1607 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1608 | after_type_declarator array_declarator %prec '.'
1609 { $$ = set_array_declarator_type ($2, $1, 0); }
1610 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1611 { $$ = make_pointer_declarator ($2, $3); }
1618 /* Kinds of declarator that can appear in a parameter list
1619 in addition to notype_declarator. This is like after_type_declarator
1620 but does not allow a typedef name in parentheses as an identifier
1621 (because it would conflict with a function with that typedef as arg). */
1623 parm_declarator_starttypename
1624 | parm_declarator_nostarttypename
1627 parm_declarator_starttypename:
1628 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1629 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1630 | parm_declarator_starttypename array_declarator %prec '.'
1631 { $$ = set_array_declarator_type ($2, $1, 0); }
1638 parm_declarator_nostarttypename:
1639 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1640 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1641 | parm_declarator_nostarttypename array_declarator %prec '.'
1642 { $$ = set_array_declarator_type ($2, $1, 0); }
1643 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1644 { $$ = make_pointer_declarator ($2, $3); }
1645 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1646 { $$ = make_pointer_declarator ($2, $3); }
1647 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1648 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1651 /* A declarator allowed whether or not there has been
1652 an explicit typespec. These cannot redeclare a typedef-name. */
1655 notype_declarator '(' parmlist_or_identifiers %prec '.'
1656 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1657 | '(' maybe_attribute notype_declarator ')'
1658 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1659 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1660 { $$ = make_pointer_declarator ($2, $3); }
1661 | notype_declarator array_declarator %prec '.'
1662 { $$ = set_array_declarator_type ($2, $1, 0); }
1687 /* structsp_attr: struct/union/enum specifiers that either
1688 end with attributes, or are such that any following attributes would
1689 be parsed as part of the struct/union/enum specifier.
1691 structsp_nonattr: other struct/union/enum specifiers. */
1694 struct_head identifier '{'
1695 { $$ = start_struct (RECORD_TYPE, $2);
1696 /* Start scope of tag before parsing components. */
1698 component_decl_list '}' maybe_attribute
1699 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1700 chainon ($1, $7)); }
1701 | struct_head '{' component_decl_list '}' maybe_attribute
1702 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1703 nreverse ($3), chainon ($1, $5));
1705 | union_head identifier '{'
1706 { $$ = start_struct (UNION_TYPE, $2); }
1707 component_decl_list '}' maybe_attribute
1708 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1709 chainon ($1, $7)); }
1710 | union_head '{' component_decl_list '}' maybe_attribute
1711 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1712 nreverse ($3), chainon ($1, $5));
1714 | enum_head identifier '{'
1715 { $$ = start_enum ($2); }
1716 enumlist maybecomma_warn '}' maybe_attribute
1717 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1718 chainon ($1, $8)); }
1720 { $$ = start_enum (NULL_TREE); }
1721 enumlist maybecomma_warn '}' maybe_attribute
1722 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1723 chainon ($1, $7)); }
1727 struct_head identifier
1728 { $$ = xref_tag (RECORD_TYPE, $2); }
1729 | union_head identifier
1730 { $$ = xref_tag (UNION_TYPE, $2); }
1731 | enum_head identifier
1732 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1733 /* In ISO C, enumerated types can be referred to
1734 only if already defined. */
1735 if (pedantic && !COMPLETE_TYPE_P ($$))
1736 pedwarn ("ISO C forbids forward references to `enum' types"); }
1747 { if (pedantic && ! flag_isoc99)
1748 pedwarn ("comma at end of enumerator list"); }
1751 /* We chain the components in reverse order. They are put in forward
1752 order in structsp_attr.
1754 Note that component_declarator returns single decls, so components
1755 and components_notype can use TREE_CHAIN directly, wheras components
1756 and components_notype return lists (of comma separated decls), so
1757 component_decl_list and component_decl_list2 must use chainon.
1759 The theory behind all this is that there will be more semicolon
1760 separated fields than comma separated fields, and so we'll be
1761 minimizing the number of node traversals required by chainon. */
1763 component_decl_list:
1764 component_decl_list2
1766 | component_decl_list2 component_decl
1767 { $$ = chainon ($2, $1);
1768 pedwarn ("no semicolon at end of struct or union"); }
1771 component_decl_list2: /* empty */
1773 | component_decl_list2 component_decl ';'
1774 { $$ = chainon ($2, $1); }
1775 | component_decl_list2 ';'
1777 pedwarn ("extra semicolon in struct or union specified"); }
1779 /* foo(sizeof(struct{ @defs(ClassName)})); */
1780 | DEFS '(' CLASSNAME ')'
1781 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1786 declspecs_nosc_ts setspecs components
1788 POP_DECLSPEC_STACK; }
1789 | declspecs_nosc_ts setspecs
1791 /* Support for unnamed structs or unions as members of
1792 structs or unions (which is [a] useful and [b] supports
1795 pedwarn ("ISO C doesn't support unnamed structs/unions");
1797 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1798 POP_DECLSPEC_STACK; }
1799 | declspecs_nosc_nots setspecs components_notype
1801 POP_DECLSPEC_STACK; }
1802 | declspecs_nosc_nots
1804 pedwarn ("ISO C forbids member declarations with no members");
1805 shadow_tag_warned ($1, pedantic);
1809 | extension component_decl
1811 RESTORE_EXT_FLAGS ($1); }
1815 component_declarator
1816 | components ',' maybe_resetattrs component_declarator
1817 { TREE_CHAIN ($4) = $1; $$ = $4; }
1821 component_notype_declarator
1822 | components_notype ',' maybe_resetattrs component_notype_declarator
1823 { TREE_CHAIN ($4) = $1; $$ = $4; }
1826 component_declarator:
1827 declarator maybe_attribute
1828 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1829 decl_attributes (&$$,
1830 chainon ($2, all_prefix_attributes), 0); }
1831 | declarator ':' expr_no_commas maybe_attribute
1832 { $$ = grokfield ($1, current_declspecs, $3);
1833 decl_attributes (&$$,
1834 chainon ($4, all_prefix_attributes), 0); }
1835 | ':' expr_no_commas maybe_attribute
1836 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1837 decl_attributes (&$$,
1838 chainon ($3, all_prefix_attributes), 0); }
1841 component_notype_declarator:
1842 notype_declarator maybe_attribute
1843 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1844 decl_attributes (&$$,
1845 chainon ($2, all_prefix_attributes), 0); }
1846 | notype_declarator ':' expr_no_commas maybe_attribute
1847 { $$ = grokfield ($1, current_declspecs, $3);
1848 decl_attributes (&$$,
1849 chainon ($4, all_prefix_attributes), 0); }
1850 | ':' expr_no_commas maybe_attribute
1851 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1852 decl_attributes (&$$,
1853 chainon ($3, all_prefix_attributes), 0); }
1856 /* We chain the enumerators in reverse order.
1857 They are put in forward order in structsp_attr. */
1861 | enumlist ',' enumerator
1862 { if ($1 == error_mark_node)
1865 TREE_CHAIN ($3) = $1, $$ = $3; }
1867 { $$ = error_mark_node; }
1873 { $$ = build_enumerator ($1, NULL_TREE); }
1874 | identifier '=' expr_no_commas
1875 { $$ = build_enumerator ($1, $3); }
1880 { pending_xref_error ();
1883 { $$ = build_tree_list ($<ttype>2, $3); }
1886 absdcl: /* an absolute declarator */
1892 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1894 { $$ = build_tree_list (build_tree_list (current_declspecs,
1896 all_prefix_attributes); }
1898 { $$ = build_tree_list (build_tree_list (current_declspecs,
1900 all_prefix_attributes); }
1901 | absdcl1_noea attributes
1902 { $$ = build_tree_list (build_tree_list (current_declspecs,
1904 chainon ($2, all_prefix_attributes)); }
1907 absdcl1: /* a nonempty absolute declarator */
1914 | '*' maybe_type_quals_attrs absdcl1_noea
1915 { $$ = make_pointer_declarator ($2, $3); }
1919 '*' maybe_type_quals_attrs
1920 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1921 | '*' maybe_type_quals_attrs absdcl1_ea
1922 { $$ = make_pointer_declarator ($2, $3); }
1926 '(' maybe_attribute absdcl1 ')'
1927 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1928 | direct_absdcl1 '(' parmlist
1929 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1930 | direct_absdcl1 array_declarator
1931 { $$ = set_array_declarator_type ($2, $1, 1); }
1933 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1935 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1938 /* The [...] part of a declarator for an array type. */
1941 '[' maybe_type_quals_attrs expr_no_commas ']'
1942 { $$ = build_array_declarator ($3, $2, 0, 0); }
1943 | '[' maybe_type_quals_attrs ']'
1944 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1945 | '[' maybe_type_quals_attrs '*' ']'
1946 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1947 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1948 { $$ = build_array_declarator ($4, $3, 1, 0); }
1949 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1950 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1951 { $$ = build_array_declarator ($4, $2, 1, 0); }
1954 /* A nonempty series of declarations and statements (possibly followed by
1955 some labels) that can form the body of a compound statement.
1956 NOTE: we don't allow labels on declarations; this might seem like a
1957 natural extension, but there would be a conflict between attributes
1958 on the label and prefix attributes on the declaration. */
1961 lineno_stmt_decl_or_labels_ending_stmt
1962 | lineno_stmt_decl_or_labels_ending_decl
1963 | lineno_stmt_decl_or_labels_ending_label
1965 error ("label at end of compound statement");
1967 | lineno_stmt_decl_or_labels_ending_error
1970 lineno_stmt_decl_or_labels_ending_stmt:
1972 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1973 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1974 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1975 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
1978 lineno_stmt_decl_or_labels_ending_decl:
1980 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
1982 if ((pedantic && !flag_isoc99)
1983 || warn_declaration_after_statement)
1984 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
1986 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
1987 | lineno_stmt_decl_or_labels_ending_error lineno_decl
1990 lineno_stmt_decl_or_labels_ending_label:
1992 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
1993 | lineno_stmt_decl_or_labels_ending_decl lineno_label
1994 | lineno_stmt_decl_or_labels_ending_label lineno_label
1995 | lineno_stmt_decl_or_labels_ending_error lineno_label
1998 lineno_stmt_decl_or_labels_ending_error:
2000 | lineno_stmt_decl_or_labels errstmt
2003 lineno_stmt_decl_or_labels:
2004 lineno_stmt_decl_or_labels_ending_stmt
2005 | lineno_stmt_decl_or_labels_ending_decl
2006 | lineno_stmt_decl_or_labels_ending_label
2007 | lineno_stmt_decl_or_labels_ending_error
2013 push_scope: /* empty */
2016 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2020 pop_scope: /* empty */
2023 if (c_dialect_objc ())
2024 objc_clear_super_receiver ();
2026 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2030 /* Start and end blocks created for the new scopes of C99. */
2031 c99_block_start: /* empty */
2034 $$ = c_begin_compound_stmt ();
2037 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2044 /* Productions using c99_block_start and c99_block_end will need to do what's
2045 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2046 $1 is the value of c99_block_start and $2 of c99_block_end. */
2047 c99_block_end: /* empty */
2050 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2052 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2053 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2060 /* Read zero or more forward-declarations for labels
2061 that nested functions can jump to. */
2066 pedwarn ("ISO C forbids label declarations"); }
2071 | label_decls label_decl
2075 LABEL identifiers_or_typenames ';'
2077 for (link = $2; link; link = TREE_CHAIN (link))
2079 tree label = declare_label (TREE_VALUE (link));
2080 C_DECLARED_LABEL_FLAG (label) = 1;
2081 add_decl_stmt (label);
2086 /* This is the body of a function definition.
2087 It causes syntax errors to ignore to the next openbrace. */
2094 compstmt_start: '{' { compstmt_count++;
2095 $$ = c_begin_compound_stmt (); }
2098 compstmt_nostart: '}'
2099 { $$ = convert (void_type_node, integer_zero_node); }
2100 | push_scope maybe_label_decls compstmt_contents_nonempty '}' pop_scope
2101 { $$ = pop_scope ();
2102 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2103 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2107 compstmt_contents_nonempty:
2112 compstmt_primary_start:
2114 { if (current_function_decl == 0)
2116 error ("braced-group within expression allowed only inside a function");
2119 /* We must force a BLOCK for this level
2120 so that, if it is not expanded later,
2121 there is a way to turn off the entire subtree of blocks
2122 that are contained in it. */
2125 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2126 last_expr_type = NULL_TREE;
2130 compstmt: compstmt_start compstmt_nostart
2131 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2132 last_expr_type = NULL_TREE;
2136 /* Value is number of statements counted as of the closeparen. */
2138 if_prefix c99_block_lineno_labeled_stmt
2139 { c_finish_then (); }
2140 /* Make sure c_expand_end_cond is run once
2141 for each call to c_expand_start_cond.
2142 Otherwise a crash is likely. */
2147 /* We must build the IF_STMT node before parsing its
2148 condition so that EXPR_LOCUS refers to the line
2149 containing the "if", and not the line containing
2150 the close-parenthesis.
2152 c_begin_if_stmt returns the IF_STMT node, which
2153 we later pass to c_expand_start_cond to fill
2154 in the condition and other tidbits. */
2156 { $<ttype>$ = c_begin_if_stmt (); }
2158 { c_expand_start_cond (lang_hooks.truthvalue_conversion ($4),
2159 compstmt_count,$<ttype>2);
2160 $<itype>$ = stmt_count;
2161 if_stmt_locus = $<location>-1; }
2164 /* This is a subroutine of stmt.
2165 It is used twice, once for valid DO statements
2166 and once for catching errors in parsing the end test. */
2171 c_in_iteration_stmt++;
2173 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2175 /* In the event that a parse error prevents
2176 parsing the complete do-statement, set the
2177 condition now. Otherwise, we can get crashes at
2178 RTL-generation time. */
2179 DO_COND ($<ttype>$) = error_mark_node; }
2180 c99_block_lineno_labeled_stmt WHILE
2182 RECHAIN_STMTS ($$, DO_BODY ($$));
2183 c_in_iteration_stmt--; }
2186 /* The forced readahead in here is because we might be at the end of a
2187 line, and the line and file won't be bumped until yylex absorbs the
2188 first token on the next line. */
2191 { if (yychar == YYEMPTY)
2193 $$ = input_location; }
2196 lineno_labeled_stmt:
2198 | lineno_label lineno_labeled_stmt
2201 /* Like lineno_labeled_stmt, but a block in C99. */
2202 c99_block_lineno_labeled_stmt:
2203 c99_block_start lineno_labeled_stmt c99_block_end
2205 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2212 SET_EXPR_LOCUS ($2, NULL);
2213 annotate_with_locus ($2, $1);
2222 SET_EXPR_LOCUS ($2, NULL);
2223 annotate_with_locus ($2, $1);
2228 select_or_iter_stmt:
2230 { c_expand_start_else ();
2231 $<itype>1 = stmt_count; }
2232 c99_block_lineno_labeled_stmt
2234 c_expand_end_cond ();
2235 if (extra_warnings && stmt_count == $<itype>1)
2236 warning ("empty body in an else-statement"); }
2237 | simple_if %prec IF
2238 { c_expand_end_cond ();
2239 /* This warning is here instead of in simple_if, because we
2240 do not want a warning if an empty if is followed by an
2241 else statement. Increment stmt_count so we don't
2242 give a second error if this is a nested `if'. */
2243 if (extra_warnings && stmt_count++ == $<itype>1)
2244 warning ("%Hempty body in an if-statement",
2246 /* Make sure c_expand_end_cond is run once
2247 for each call to c_expand_start_cond.
2248 Otherwise a crash is likely. */
2249 | simple_if ELSE error
2250 { c_expand_end_cond (); }
2251 /* We must build the WHILE_STMT node before parsing its
2252 condition so that EXPR_LOCUS refers to the line
2253 containing the "while", and not the line containing
2254 the close-parenthesis.
2256 c_begin_while_stmt returns the WHILE_STMT node, which
2257 we later pass to c_finish_while_stmt_cond to fill
2258 in the condition and other tidbits. */
2261 $<ttype>$ = c_begin_while_stmt (); }
2263 { c_in_iteration_stmt++;
2264 $4 = lang_hooks.truthvalue_conversion ($4);
2265 c_finish_while_stmt_cond
2266 (lang_hooks.truthvalue_conversion ($4), $<ttype>2);
2267 $<ttype>$ = add_stmt ($<ttype>2); }
2268 c99_block_lineno_labeled_stmt
2269 { c_in_iteration_stmt--;
2270 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2273 { DO_COND ($1) = lang_hooks.truthvalue_conversion ($3); }
2274 | do_stmt_start error
2277 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2278 NULL_TREE, NULL_TREE);
2279 add_stmt ($<ttype>$); }
2282 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2285 FOR_COND ($<ttype>2)
2286 = lang_hooks.truthvalue_conversion ($6); }
2288 { c_in_iteration_stmt++;
2289 FOR_EXPR ($<ttype>2) = $9; }
2290 c99_block_lineno_labeled_stmt
2291 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2292 c_in_iteration_stmt--;}
2293 | SWITCH '(' expr ')'
2295 $<ttype>$ = c_start_case ($3);
2297 c99_block_lineno_labeled_stmt
2304 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2306 { check_for_loop_decls (); }
2315 /* Parse a single real statement, not including any labels. */
2318 { stmt_count++; $$ = $1; }
2321 $$ = c_expand_expr_stmt ($1); }
2322 | c99_block_start select_or_iter_stmt c99_block_end
2324 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2328 if (!(c_in_iteration_stmt || c_in_case_stmt))
2330 error ("break statement not within loop or switch");
2334 $$ = add_stmt (build_break_stmt ()); }
2337 if (!c_in_iteration_stmt)
2339 error ("continue statement not within a loop");
2343 $$ = add_stmt (build_continue_stmt ()); }
2346 $$ = c_expand_return (NULL_TREE); }
2349 $$ = c_expand_return ($2); }
2351 | GOTO identifier ';'
2354 decl = lookup_label ($2);
2357 TREE_USED (decl) = 1;
2358 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2365 pedwarn ("ISO C forbids `goto *expr;'");
2367 $3 = convert (ptr_type_node, $3);
2368 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2374 $$ = objc_build_throw_stmt ($2);
2378 $$ = objc_build_throw_stmt (NULL_TREE);
2380 | objc_try_catch_stmt
2381 { objc_build_finally_prologue (); }
2383 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2384 | AT_SYNCHRONIZED '(' expr ')'
2385 { objc_build_synchronized_prologue ($3); }
2387 { $$ = objc_build_synchronized_epilogue (); }
2390 objc_try_catch_stmt:
2392 { objc_build_try_epilogue (1); }
2394 { objc_build_catch_epilogue (); $$ = 1; }
2396 { objc_build_try_epilogue (0); $$ = 0; }
2402 { objc_build_try_prologue (); }
2407 objc_catch_list objc_catch_block
2412 AT_CATCH '(' parm ')'
2413 { objc_build_catch_stmt ($3); }
2426 /* Any kind of label, including jump labels and case labels.
2427 ANSI C accepts labels only before statements, but we allow them
2428 also at the end of a compound statement. */
2430 label: CASE expr_no_commas ':'
2432 $$ = do_case ($2, NULL_TREE); }
2433 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2435 $$ = do_case ($2, $4); }
2438 $$ = do_case (NULL_TREE, NULL_TREE); }
2439 | identifier save_location ':' maybe_attribute
2440 { tree label = define_label ($2, $1);
2444 decl_attributes (&label, $4, 0);
2445 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2452 /* Asm expressions and statements */
2454 /* simple_asm_expr is used in restricted contexts, where a full
2455 expression with inputs and outputs does not make sense. */
2457 ASM_KEYWORD stop_string_translation
2458 '(' STRING ')' start_string_translation
2462 /* maybeasm: used for assembly names for declarations */
2469 /* asmdef: asm() outside a function body. */
2472 { assemble_asm ($1); }
2473 | ASM_KEYWORD error start_string_translation ';'
2477 /* Full-blown asm statement with inputs, outputs, clobbers, and
2478 volatile tag allowed. */
2480 ASM_KEYWORD maybe_volatile stop_string_translation
2481 '(' asm_argument ')' start_string_translation ';'
2483 $$ = build_asm_stmt ($2, $5); }
2489 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2490 /* output operands */
2491 | STRING ':' asm_operands
2492 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2493 /* output and input operands */
2494 | STRING ':' asm_operands ':' asm_operands
2495 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2496 /* output and input operands and clobbers */
2497 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2498 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2501 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2507 { if ($1 != ridpointers[RID_VOLATILE])
2509 warning ("%E qualifier ignored on asm", $1);
2517 /* These are the operands other than the first string and colon
2518 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2519 asm_operands: /* empty */
2521 | nonnull_asm_operands
2524 nonnull_asm_operands:
2526 | nonnull_asm_operands ',' asm_operand
2527 { $$ = chainon ($1, $3); }
2531 STRING start_string_translation '(' expr ')' stop_string_translation
2532 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $4); }
2533 | '[' identifier ']' STRING start_string_translation
2534 '(' expr ')' stop_string_translation
2535 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2536 IDENTIFIER_POINTER ($2));
2537 $$ = build_tree_list (build_tree_list ($2, $4), $7); }
2542 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2543 | asm_clobbers ',' STRING
2544 { $$ = tree_cons (NULL_TREE, $3, $1); }
2547 stop_string_translation:
2548 { c_lex_string_translate = 0; }
2551 start_string_translation:
2552 { c_lex_string_translate = 1; }
2556 /* This is what appears inside the parens in a function declarator.
2557 Its value is a list of ..._TYPE nodes. Attributes must appear here
2558 to avoid a conflict with their appearance after an open parenthesis
2559 in an abstract declarator, as in
2560 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2564 declare_parm_level (); }
2573 { mark_forward_parm_decls (); }
2575 { /* Dummy action so attributes are in known place
2576 on parser stack. */ }
2580 { $$ = make_node (TREE_LIST); }
2583 /* This is what appears inside the parens in a function declarator.
2584 Is value is represented in the format that grokdeclarator expects. */
2585 parmlist_2: /* empty */
2586 { $$ = make_node (TREE_LIST); }
2588 { $$ = make_node (TREE_LIST);
2589 /* Suppress -Wold-style-definition for this case. */
2590 TREE_CHAIN ($$) = error_mark_node;
2591 error ("ISO C requires a named argument before `...'");
2594 { $$ = get_parm_info (/*ellipsis=*/false); }
2595 | parms ',' ELLIPSIS
2596 { $$ = get_parm_info (/*ellipsis=*/true); }
2601 { push_parm_decl ($1); }
2603 { push_parm_decl ($3); }
2606 /* A single parameter declaration or parameter type name,
2607 as found in a parmlist. */
2609 declspecs_ts setspecs parm_declarator maybe_attribute
2610 { $$ = build_tree_list (build_tree_list (current_declspecs,
2612 chainon ($4, all_prefix_attributes));
2613 POP_DECLSPEC_STACK; }
2614 | declspecs_ts setspecs notype_declarator maybe_attribute
2615 { $$ = build_tree_list (build_tree_list (current_declspecs,
2617 chainon ($4, all_prefix_attributes));
2618 POP_DECLSPEC_STACK; }
2619 | declspecs_ts setspecs absdcl_maybe_attribute
2621 POP_DECLSPEC_STACK; }
2622 | declspecs_nots setspecs notype_declarator maybe_attribute
2623 { $$ = build_tree_list (build_tree_list (current_declspecs,
2625 chainon ($4, all_prefix_attributes));
2626 POP_DECLSPEC_STACK; }
2628 | declspecs_nots setspecs absdcl_maybe_attribute
2630 POP_DECLSPEC_STACK; }
2633 /* The first parm, which must suck attributes from off the top of the parser
2636 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2637 { $$ = build_tree_list (build_tree_list (current_declspecs,
2639 chainon ($4, all_prefix_attributes));
2640 POP_DECLSPEC_STACK; }
2641 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2642 { $$ = build_tree_list (build_tree_list (current_declspecs,
2644 chainon ($4, all_prefix_attributes));
2645 POP_DECLSPEC_STACK; }
2646 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2648 POP_DECLSPEC_STACK; }
2649 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2650 { $$ = build_tree_list (build_tree_list (current_declspecs,
2652 chainon ($4, all_prefix_attributes));
2653 POP_DECLSPEC_STACK; }
2655 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2657 POP_DECLSPEC_STACK; }
2662 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2663 all_prefix_attributes = prefix_attributes; }
2666 /* This is used in a function definition
2667 where either a parmlist or an identifier list is ok.
2668 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2669 parmlist_or_identifiers:
2672 declare_parm_level (); }
2673 parmlist_or_identifiers_1
2678 parmlist_or_identifiers_1:
2682 for (t = $1; t; t = TREE_CHAIN (t))
2683 if (TREE_VALUE (t) == NULL_TREE)
2684 error ("`...' in old-style identifier list");
2685 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2687 /* Make sure we have a parmlist after attributes. */
2689 && (TREE_CODE ($$) != TREE_LIST
2690 || TREE_PURPOSE ($$) == 0
2691 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2696 /* A nonempty list of identifiers. */
2699 { $$ = build_tree_list (NULL_TREE, $1); }
2700 | identifiers ',' IDENTIFIER
2701 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2704 /* A nonempty list of identifiers, including typenames. */
2705 identifiers_or_typenames:
2707 { $$ = build_tree_list (NULL_TREE, $1); }
2708 | identifiers_or_typenames ',' identifier
2709 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2714 { $$ = SAVE_EXT_FLAGS();
2716 warn_pointer_arith = 0;
2717 warn_traditional = 0;
2722 /* Objective-C productions. */
2732 if (objc_implementation_context)
2734 finish_class (objc_implementation_context);
2735 objc_ivar_chain = NULL_TREE;
2736 objc_implementation_context = NULL_TREE;
2739 warning ("`@end' must appear in an implementation context");
2743 /* A nonempty list of identifiers. */
2746 { $$ = build_tree_list (NULL_TREE, $1); }
2747 | identifier_list ',' identifier
2748 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2752 CLASS identifier_list ';'
2754 objc_declare_class ($2);
2759 ALIAS identifier identifier ';'
2761 objc_declare_alias ($2, $3);
2766 ':' identifier { $$ = $2; }
2767 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2771 '{' ivar_decl_list '}'
2776 INTERFACE identifier superclass protocolrefs
2778 objc_interface_context = objc_ivar_context
2779 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2780 objc_public_flag = 0;
2784 continue_class (objc_interface_context);
2788 finish_class (objc_interface_context);
2789 objc_interface_context = NULL_TREE;
2792 | IMPLEMENTATION identifier superclass
2794 objc_implementation_context = objc_ivar_context
2795 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2796 objc_public_flag = 0;
2801 = continue_class (objc_implementation_context);
2804 | INTERFACE identifier '(' identifier ')' protocolrefs
2806 objc_interface_context
2807 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2808 continue_class (objc_interface_context);
2812 finish_class (objc_interface_context);
2813 objc_interface_context = NULL_TREE;
2816 | IMPLEMENTATION identifier '(' identifier ')'
2818 objc_implementation_context
2819 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2821 = continue_class (objc_implementation_context);
2826 PROTOCOL identifier protocolrefs
2828 objc_pq_context = 1;
2829 objc_interface_context
2830 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2834 objc_pq_context = 0;
2835 finish_protocol(objc_interface_context);
2836 objc_interface_context = NULL_TREE;
2838 /* The @protocol forward-declaration production introduces a
2839 reduce/reduce conflict on ';', which should be resolved in
2840 favor of the production 'identifier_list -> identifier'. */
2841 | PROTOCOL identifier_list ';'
2843 objc_declare_protocols ($2);
2852 | non_empty_protocolrefs
2855 non_empty_protocolrefs:
2856 ARITHCOMPARE identifier_list ARITHCOMPARE
2858 if ($1 == LT_EXPR && $3 == GT_EXPR)
2866 ivar_decl_list visibility_spec ivar_decls
2871 PRIVATE { objc_public_flag = 2; }
2872 | PROTECTED { objc_public_flag = 0; }
2873 | PUBLIC { objc_public_flag = 1; }
2881 | ivar_decls ivar_decl ';'
2885 pedwarn ("extra semicolon in struct or union specified");
2890 /* There is a shift-reduce conflict here, because `components' may
2891 start with a `typename'. It happens that shifting (the default resolution)
2892 does the right thing, because it treats the `typename' as part of
2893 a `typed_typespecs'.
2895 It is possible that this same technique would allow the distinction
2896 between `notype_initdecls' and `initdecls' to be eliminated.
2897 But I am being cautious and not trying it. */
2900 declspecs_nosc_ts setspecs ivars
2902 POP_DECLSPEC_STACK; }
2903 | declspecs_nosc_nots setspecs ivars
2905 POP_DECLSPEC_STACK; }
2914 | ivars ',' maybe_resetattrs ivar_declarator
2920 $$ = add_instance_variable (objc_ivar_context,
2922 $1, current_declspecs,
2925 | declarator ':' expr_no_commas
2927 $$ = add_instance_variable (objc_ivar_context,
2929 $1, current_declspecs, $3);
2931 | ':' expr_no_commas
2933 $$ = add_instance_variable (objc_ivar_context,
2936 current_declspecs, $2);
2942 { objc_inherit_code = CLASS_METHOD_DECL; }
2944 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2950 objc_pq_context = 1;
2951 if (!objc_implementation_context)
2952 fatal_error ("method definition not in class context");
2956 objc_pq_context = 0;
2957 objc_add_method (objc_implementation_context,
2959 objc_inherit_code == CLASS_METHOD_DECL);
2960 start_method_def ($3);
2964 continue_method_def ();
2968 finish_method_def ();
2972 /* the reason for the strange actions in this rule
2973 is so that notype_initdecls when reached via datadef
2974 can find a valid list of type and sc specs in $0. */
2978 | methodprotolist methodproto
2979 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2990 /* Remember protocol qualifiers in prototypes. */
2991 objc_pq_context = 1;
2995 /* Forget protocol qualifiers here. */
2996 objc_pq_context = 0;
2997 objc_add_method (objc_interface_context,
2999 objc_inherit_code == CLASS_METHOD_DECL);
3005 '(' typename ')' unaryselector
3007 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3012 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3015 | '(' typename ')' keywordselector optparmlist
3017 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3020 | keywordselector optparmlist
3022 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3026 /* "optarglist" assumes that start_method_def has already been called...
3027 if it is not, the "xdecls" will not be placed in the proper scope */
3034 /* to get around the following situation: "int foo (int a) int b; {}" that
3035 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3050 declspecs_ts setspecs myparms ';'
3051 { POP_DECLSPEC_STACK; }
3053 { shadow_tag ($1); }
3054 | declspecs_nots ';'
3055 { pedwarn ("empty declaration"); }
3060 { push_parm_decl ($1); }
3061 | myparms ',' myparm
3062 { push_parm_decl ($3); }
3065 /* A single parameter declaration or parameter type name,
3066 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3069 parm_declarator maybe_attribute
3070 { $$ = build_tree_list (build_tree_list (current_declspecs,
3072 chainon ($2, all_prefix_attributes)); }
3073 | notype_declarator maybe_attribute
3074 { $$ = build_tree_list (build_tree_list (current_declspecs,
3076 chainon ($2, all_prefix_attributes)); }
3077 | absdcl_maybe_attribute
3088 /* oh what a kludge! */
3089 $$ = objc_ellipsis_node;
3097 /* returns a tree list node generated by get_parm_info */
3110 | keywordselector keyworddecl
3112 $$ = chainon ($1, $2);
3125 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3126 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3127 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3128 | TYPESPEC | TYPE_QUAL
3132 selector ':' '(' typename ')' identifier
3134 $$ = build_keyword_decl ($1, $4, $6);
3137 | selector ':' identifier
3139 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3142 | ':' '(' typename ')' identifier
3144 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3149 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3160 | keywordarglist keywordarg
3162 $$ = chainon ($1, $2);
3170 if (TREE_CHAIN ($1) == NULL_TREE)
3171 /* just return the expr., remove a level of indirection */
3172 $$ = TREE_VALUE ($1);
3174 /* we have a comma expr., we will collapse later */
3180 selector ':' keywordexpr
3182 $$ = build_tree_list ($1, $3);
3186 $$ = build_tree_list (NULL_TREE, $2);
3194 $$ = get_class_reference ($1);
3198 $$ = get_class_reference ($1);
3203 '[' receiver messageargs ']'
3204 { $$ = build_tree_list ($2, $3); }
3214 | keywordnamelist keywordname
3216 $$ = chainon ($1, $2);
3223 $$ = build_tree_list ($1, NULL_TREE);
3227 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3232 SELECTOR '(' selectorarg ')'
3239 PROTOCOL '(' identifier ')'
3245 /* extension to support C-structures in the archiver */
3248 ENCODE '(' typename ')'
3250 $$ = groktypename ($3);
3257 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3258 cpplib.h's token codes into yacc's token codes. */
3260 static enum cpp_ttype last_token;
3262 /* The reserved keyword table. */
3266 ENUM_BITFIELD(rid) rid : 16;
3267 unsigned int disable : 16;
3270 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3272 #define D_C89 0x01 /* not in C89 */
3273 #define D_EXT 0x02 /* GCC extension */
3274 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3275 #define D_OBJC 0x08 /* Objective C only */
3277 static const struct resword reswords[] =
3279 { "_Bool", RID_BOOL, 0 },
3280 { "_Complex", RID_COMPLEX, 0 },
3281 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3282 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3283 { "__alignof", RID_ALIGNOF, 0 },
3284 { "__alignof__", RID_ALIGNOF, 0 },
3285 { "__asm", RID_ASM, 0 },
3286 { "__asm__", RID_ASM, 0 },
3287 { "__attribute", RID_ATTRIBUTE, 0 },
3288 { "__attribute__", RID_ATTRIBUTE, 0 },
3289 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3290 { "__builtin_offsetof", RID_OFFSETOF, 0 },
3291 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3292 { "__builtin_va_arg", RID_VA_ARG, 0 },
3293 { "__complex", RID_COMPLEX, 0 },
3294 { "__complex__", RID_COMPLEX, 0 },
3295 { "__const", RID_CONST, 0 },
3296 { "__const__", RID_CONST, 0 },
3297 { "__extension__", RID_EXTENSION, 0 },
3298 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3299 { "__imag", RID_IMAGPART, 0 },
3300 { "__imag__", RID_IMAGPART, 0 },
3301 { "__inline", RID_INLINE, 0 },
3302 { "__inline__", RID_INLINE, 0 },
3303 { "__label__", RID_LABEL, 0 },
3304 { "__ptrbase", RID_PTRBASE, 0 },
3305 { "__ptrbase__", RID_PTRBASE, 0 },
3306 { "__ptrextent", RID_PTREXTENT, 0 },
3307 { "__ptrextent__", RID_PTREXTENT, 0 },
3308 { "__ptrvalue", RID_PTRVALUE, 0 },
3309 { "__ptrvalue__", RID_PTRVALUE, 0 },
3310 { "__real", RID_REALPART, 0 },
3311 { "__real__", RID_REALPART, 0 },
3312 { "__restrict", RID_RESTRICT, 0 },
3313 { "__restrict__", RID_RESTRICT, 0 },
3314 { "__signed", RID_SIGNED, 0 },
3315 { "__signed__", RID_SIGNED, 0 },
3316 { "__thread", RID_THREAD, 0 },
3317 { "__typeof", RID_TYPEOF, 0 },
3318 { "__typeof__", RID_TYPEOF, 0 },
3319 { "__volatile", RID_VOLATILE, 0 },
3320 { "__volatile__", RID_VOLATILE, 0 },
3321 { "asm", RID_ASM, D_EXT },
3322 { "auto", RID_AUTO, 0 },
3323 { "break", RID_BREAK, 0 },
3324 { "case", RID_CASE, 0 },
3325 { "char", RID_CHAR, 0 },
3326 { "const", RID_CONST, 0 },
3327 { "continue", RID_CONTINUE, 0 },
3328 { "default", RID_DEFAULT, 0 },
3329 { "do", RID_DO, 0 },
3330 { "double", RID_DOUBLE, 0 },
3331 { "else", RID_ELSE, 0 },
3332 { "enum", RID_ENUM, 0 },
3333 { "extern", RID_EXTERN, 0 },
3334 { "float", RID_FLOAT, 0 },
3335 { "for", RID_FOR, 0 },
3336 { "goto", RID_GOTO, 0 },
3337 { "if", RID_IF, 0 },
3338 { "inline", RID_INLINE, D_EXT89 },
3339 { "int", RID_INT, 0 },
3340 { "long", RID_LONG, 0 },
3341 { "register", RID_REGISTER, 0 },
3342 { "restrict", RID_RESTRICT, D_C89 },
3343 { "return", RID_RETURN, 0 },
3344 { "short", RID_SHORT, 0 },
3345 { "signed", RID_SIGNED, 0 },
3346 { "sizeof", RID_SIZEOF, 0 },
3347 { "static", RID_STATIC, 0 },
3348 { "struct", RID_STRUCT, 0 },
3349 { "switch", RID_SWITCH, 0 },
3350 { "typedef", RID_TYPEDEF, 0 },
3351 { "typeof", RID_TYPEOF, D_EXT },
3352 { "union", RID_UNION, 0 },
3353 { "unsigned", RID_UNSIGNED, 0 },
3354 { "void", RID_VOID, 0 },
3355 { "volatile", RID_VOLATILE, 0 },
3356 { "while", RID_WHILE, 0 },
3358 { "id", RID_ID, D_OBJC },
3360 /* These objc keywords are recognized only immediately after
3362 { "class", RID_AT_CLASS, D_OBJC },
3363 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3364 { "defs", RID_AT_DEFS, D_OBJC },
3365 { "encode", RID_AT_ENCODE, D_OBJC },
3366 { "end", RID_AT_END, D_OBJC },
3367 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3368 { "interface", RID_AT_INTERFACE, D_OBJC },
3369 { "private", RID_AT_PRIVATE, D_OBJC },
3370 { "protected", RID_AT_PROTECTED, D_OBJC },
3371 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3372 { "public", RID_AT_PUBLIC, D_OBJC },
3373 { "selector", RID_AT_SELECTOR, D_OBJC },
3374 { "throw", RID_AT_THROW, D_OBJC },
3375 { "try", RID_AT_TRY, D_OBJC },
3376 { "catch", RID_AT_CATCH, D_OBJC },
3377 { "finally", RID_AT_FINALLY, D_OBJC },
3378 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3379 /* These are recognized only in protocol-qualifier context
3381 { "bycopy", RID_BYCOPY, D_OBJC },
3382 { "byref", RID_BYREF, D_OBJC },
3383 { "in", RID_IN, D_OBJC },
3384 { "inout", RID_INOUT, D_OBJC },
3385 { "oneway", RID_ONEWAY, D_OBJC },
3386 { "out", RID_OUT, D_OBJC },
3389 #define N_reswords (sizeof reswords / sizeof (struct resword))
3391 /* Table mapping from RID_* constants to yacc token numbers.
3392 Unfortunately we have to have entries for all the keywords in all
3394 static const short rid_to_yy[RID_MAX] =
3396 /* RID_STATIC */ STATIC,
3397 /* RID_UNSIGNED */ TYPESPEC,
3398 /* RID_LONG */ TYPESPEC,
3399 /* RID_CONST */ TYPE_QUAL,
3400 /* RID_EXTERN */ SCSPEC,
3401 /* RID_REGISTER */ SCSPEC,
3402 /* RID_TYPEDEF */ SCSPEC,
3403 /* RID_SHORT */ TYPESPEC,
3404 /* RID_INLINE */ SCSPEC,
3405 /* RID_VOLATILE */ TYPE_QUAL,
3406 /* RID_SIGNED */ TYPESPEC,
3407 /* RID_AUTO */ SCSPEC,
3408 /* RID_RESTRICT */ TYPE_QUAL,
3411 /* RID_COMPLEX */ TYPESPEC,
3412 /* RID_THREAD */ SCSPEC,
3416 /* RID_VIRTUAL */ 0,
3417 /* RID_EXPLICIT */ 0,
3419 /* RID_MUTABLE */ 0,
3422 /* RID_IN */ TYPE_QUAL,
3423 /* RID_OUT */ TYPE_QUAL,
3424 /* RID_INOUT */ TYPE_QUAL,
3425 /* RID_BYCOPY */ TYPE_QUAL,
3426 /* RID_BYREF */ TYPE_QUAL,
3427 /* RID_ONEWAY */ TYPE_QUAL,
3430 /* RID_INT */ TYPESPEC,
3431 /* RID_CHAR */ TYPESPEC,
3432 /* RID_FLOAT */ TYPESPEC,
3433 /* RID_DOUBLE */ TYPESPEC,
3434 /* RID_VOID */ TYPESPEC,
3435 /* RID_ENUM */ ENUM,
3436 /* RID_STRUCT */ STRUCT,
3437 /* RID_UNION */ UNION,
3439 /* RID_ELSE */ ELSE,
3440 /* RID_WHILE */ WHILE,
3443 /* RID_SWITCH */ SWITCH,
3444 /* RID_CASE */ CASE,
3445 /* RID_DEFAULT */ DEFAULT,
3446 /* RID_BREAK */ BREAK,
3447 /* RID_CONTINUE */ CONTINUE,
3448 /* RID_RETURN */ RETURN,
3449 /* RID_GOTO */ GOTO,
3450 /* RID_SIZEOF */ SIZEOF,
3453 /* RID_ASM */ ASM_KEYWORD,
3454 /* RID_TYPEOF */ TYPEOF,
3455 /* RID_ALIGNOF */ ALIGNOF,
3456 /* RID_ATTRIBUTE */ ATTRIBUTE,
3457 /* RID_VA_ARG */ VA_ARG,
3458 /* RID_EXTENSION */ EXTENSION,
3459 /* RID_IMAGPART */ IMAGPART,
3460 /* RID_REALPART */ REALPART,
3461 /* RID_LABEL */ LABEL,
3462 /* RID_PTRBASE */ PTR_BASE,
3463 /* RID_PTREXTENT */ PTR_EXTENT,
3464 /* RID_PTRVALUE */ PTR_VALUE,
3466 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3467 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3469 /* RID_FUNCTION_NAME */ FUNC_NAME,
3470 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3471 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3474 /* RID_BOOL */ TYPESPEC,
3478 /* RID_PRIVATE */ 0,
3479 /* RID_PROTECTED */ 0,
3480 /* RID_TEMPLATE */ 0,
3485 /* RID_NAMESPACE */ 0,
3487 /* RID_OFFSETOF */ OFFSETOF,
3488 /* RID_OPERATOR */ 0,
3493 /* RID_TYPENAME */ 0,
3498 /* RID_CONSTCAST */ 0,
3499 /* RID_DYNCAST */ 0,
3500 /* RID_REINTCAST */ 0,
3501 /* RID_STATCAST */ 0,
3504 /* RID_ID */ OBJECTNAME,
3505 /* RID_AT_ENCODE */ ENCODE,
3506 /* RID_AT_END */ END,
3507 /* RID_AT_CLASS */ CLASS,
3508 /* RID_AT_ALIAS */ ALIAS,
3509 /* RID_AT_DEFS */ DEFS,
3510 /* RID_AT_PRIVATE */ PRIVATE,
3511 /* RID_AT_PROTECTED */ PROTECTED,
3512 /* RID_AT_PUBLIC */ PUBLIC,
3513 /* RID_AT_PROTOCOL */ PROTOCOL,
3514 /* RID_AT_SELECTOR */ SELECTOR,
3515 /* RID_AT_THROW */ AT_THROW,
3516 /* RID_AT_TRY */ AT_TRY,
3517 /* RID_AT_CATCH */ AT_CATCH,
3518 /* RID_AT_FINALLY */ AT_FINALLY,
3519 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3520 /* RID_AT_INTERFACE */ INTERFACE,
3521 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3525 init_reswords (void)
3529 int mask = (flag_isoc99 ? 0 : D_C89)
3530 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3532 if (!c_dialect_objc ())
3535 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3536 for (i = 0; i < N_reswords; i++)
3538 /* If a keyword is disabled, do not enter it into the table
3539 and so create a canonical spelling that isn't a keyword. */
3540 if (reswords[i].disable & mask)
3543 id = get_identifier (reswords[i].word);
3544 C_RID_CODE (id) = reswords[i].rid;
3545 C_IS_RESERVED_WORD (id) = 1;
3546 ridpointers [(int) reswords[i].rid] = id;
3550 #define NAME(type) cpp_type2name (type)
3553 yyerror (const char *msgid)
3555 c_parse_error (msgid, last_token, yylval.ttype);
3564 int objc_force_identifier = objc_need_raw_identifier;
3565 OBJC_NEED_RAW_IDENTIFIER (0);
3568 if (C_IS_RESERVED_WORD (yylval.ttype))
3570 enum rid rid_code = C_RID_CODE (yylval.ttype);
3573 /* Turn non-typedefed refs to "id" into plain identifiers; this
3574 allows constructs like "void foo(id id);" to work. */
3575 if (rid_code == RID_ID)
3577 decl = lookup_name (yylval.ttype);
3578 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3582 if (!OBJC_IS_AT_KEYWORD (rid_code)
3583 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3586 /* Return the canonical spelling for this keyword. */
3587 yylval.ttype = ridpointers[(int) rid_code];
3588 return rid_to_yy[(int) rid_code];
3592 decl = lookup_name (yylval.ttype);
3595 if (TREE_CODE (decl) == TYPE_DECL)
3601 tree objc_interface_decl = is_class_name (yylval.ttype);
3602 /* ObjC class names are in the same namespace as variables and
3603 typedefs, and hence are shadowed by local declarations. */
3604 if (objc_interface_decl
3605 && (global_bindings_p ()
3606 || (!objc_force_identifier && !decl)))
3608 yylval.ttype = objc_interface_decl;
3621 last_token = c_lex (&yylval.ttype);
3624 case CPP_EQ: return '=';
3625 case CPP_NOT: return '!';
3626 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3627 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3628 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3629 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3630 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3631 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3632 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3633 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3634 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3635 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3636 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3637 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3639 case CPP_COMPL: return '~';
3640 case CPP_AND_AND: return ANDAND;
3641 case CPP_OR_OR: return OROR;
3642 case CPP_QUERY: return '?';
3643 case CPP_OPEN_PAREN: return '(';
3644 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3645 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3646 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3647 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3649 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3650 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3651 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3652 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3653 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3654 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3655 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3656 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3657 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3658 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3660 case CPP_OPEN_SQUARE: return '[';
3661 case CPP_CLOSE_SQUARE: return ']';
3662 case CPP_OPEN_BRACE: return '{';
3663 case CPP_CLOSE_BRACE: return '}';
3664 case CPP_ELLIPSIS: return ELLIPSIS;
3666 case CPP_PLUS_PLUS: return PLUSPLUS;
3667 case CPP_MINUS_MINUS: return MINUSMINUS;
3668 case CPP_DEREF: return POINTSAT;
3669 case CPP_DOT: return '.';
3671 /* The following tokens may affect the interpretation of any
3672 identifiers following, if doing Objective-C. */
3673 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3674 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3675 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3676 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3682 return yylexname ();
3685 /* This only happens in Objective-C; it must be a keyword. */
3686 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3697 case CPP_OBJC_STRING:
3700 /* These tokens are C++ specific (and will not be generated
3701 in C mode, but let's be cautious). */
3703 case CPP_DEREF_STAR:
3709 /* These tokens should not survive translation phase 4. */
3712 error ("syntax error at '%s' token", NAME(last_token));
3725 timevar_push (TV_LEX);
3727 timevar_pop (TV_LEX);
3731 /* Function used when yydebug is set, to print a token in more detail. */
3734 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3738 fprintf (file, " [%s]", NAME(last_token));
3749 if (IDENTIFIER_POINTER (t))
3750 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3754 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3755 if (TREE_CODE (t) == INTEGER_CST)
3758 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3759 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3765 /* This is not the ideal place to put this, but we have to get it out
3766 of c-lex.c because cp/lex.c has its own version. */
3768 /* Parse the file. */
3776 free (malloced_yyss);
3777 free (malloced_yyvs);
3782 #include "gt-c-parse.h"