1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only.
24 @@ifc ... @@end_ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
41 #include "langhooks.h"
46 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
58 /* Like YYERROR but do call yyerror. */
59 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
61 /* Like the default stack expander, except (1) use realloc when possible,
62 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
64 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
65 give malloced_yyvs its proper type. This is ok since all we need from
66 it is to be able to free it. */
68 static short *malloced_yyss;
69 static void *malloced_yyvs;
71 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
76 newsize = *(YYSSZ) *= 2; \
79 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
80 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
84 newss = really_call_malloc (newsize * sizeof (short)); \
85 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
87 memcpy (newss, *(SS), (SSSIZE)); \
89 memcpy (newvs, *(VS), (VSSIZE)); \
91 if (!newss || !newvs) \
98 malloced_yyss = newss; \
99 malloced_yyvs = (void *) newvs; \
105 %union {long itype; tree ttype; enum tree_code code;
106 location_t location; }
108 /* All identifiers that are not reserved words
109 and are not declared typedefs in the current block */
112 /* All identifiers that are declared typedefs in the current block.
113 In some contexts, they are treated just like IDENTIFIER,
114 but they can also serve as typespecs in declarations. */
117 /* Reserved words that specify storage class.
118 yylval contains an IDENTIFIER_NODE which indicates which one. */
119 %token SCSPEC /* Storage class other than static. */
120 %token STATIC /* Static storage class. */
122 /* Reserved words that specify type.
123 yylval contains an IDENTIFIER_NODE which indicates which one. */
126 /* Reserved words that qualify type: "const", "volatile", or "restrict".
127 yylval contains an IDENTIFIER_NODE which indicates which one. */
130 /* Character or numeric constants.
131 yylval is the node for the constant. */
134 /* String constants in raw form.
135 yylval is a STRING_CST node. */
139 /* "...", used for functions with variable arglists. */
142 /* the reserved words */
143 /* SCO include files test "ASM", so use something else. */
144 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
145 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
146 %token ATTRIBUTE EXTENSION LABEL
147 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
148 %token PTR_VALUE PTR_BASE PTR_EXTENT
151 /* Add precedence rules to solve dangling else s/r conflict */
155 /* Define the operator tokens and their precedences.
156 The value is an integer because, if used, it is the tree code
157 to use in the expression made from the operator. */
159 %right <code> ASSIGN '='
160 %right <code> '?' ':'
166 %left <code> EQCOMPARE
167 %left <code> ARITHCOMPARE
168 %left <code> LSHIFT RSHIFT
170 %left <code> '*' '/' '%'
171 %right <code> UNARY PLUSPLUS MINUSMINUS
173 %left <code> POINTSAT '.' '(' '['
175 /* The Objective-C keywords. These are included in C and in
176 Objective C, so that the token codes are the same in both. */
177 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
178 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
179 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
183 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
184 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
186 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
187 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
188 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
189 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
190 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
191 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
192 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
193 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
194 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
195 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
196 %type <ttype> declspecs_ts declspecs_nots
197 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
198 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
199 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
200 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
201 %type <ttype> typespec_nonreserved_nonattr
203 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile
204 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl init
205 %type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument
206 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
207 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
208 %type <ttype> any_word
210 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
211 %type <ttype> do_stmt_start poplevel stmt label
213 %type <ttype> c99_block_start c99_block_end
214 %type <ttype> declarator
215 %type <ttype> notype_declarator after_type_declarator
216 %type <ttype> parm_declarator
217 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
218 %type <ttype> array_declarator
220 %type <ttype> structsp_attr structsp_nonattr
221 %type <ttype> component_decl_list component_decl_list2
222 %type <ttype> component_decl components components_notype component_declarator
223 %type <ttype> component_notype_declarator
224 %type <ttype> enumlist enumerator
225 %type <ttype> struct_head union_head enum_head
226 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
227 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
228 %type <ttype> xexpr parms parm firstparm identifiers
230 %type <ttype> parmlist parmlist_1 parmlist_2
231 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
232 %type <ttype> identifiers_or_typenames
234 %type <itype> setspecs setspecs_fp extension
236 %type <location> save_location
239 /* the Objective-C nonterminals */
241 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
242 %type <ttype> methoddecl unaryselector keywordselector selector
243 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
244 %type <ttype> keywordexpr keywordarglist keywordarg
245 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
246 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
247 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
249 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
251 %type <ttype> superclass
252 %type <itype> objc_try_catch_stmt objc_finally_block
256 /* Number of statements (loosely speaking) and compound statements
258 static int stmt_count;
259 static int compstmt_count;
261 /* Input location of the end of the body of last simple_if;
262 used by the stmt-rule immediately after simple_if returns. */
263 static location_t if_stmt_locus;
266 /* List of types and structure classes of the current declaration. */
267 static GTY(()) tree current_declspecs;
268 static GTY(()) tree prefix_attributes;
270 /* List of all the attributes applying to the identifier currently being
271 declared; includes prefix_attributes and possibly some more attributes
272 just after a comma. */
273 static GTY(()) tree all_prefix_attributes;
275 /* Stack of saved values of current_declspecs, prefix_attributes and
276 all_prefix_attributes. */
277 static GTY(()) tree declspec_stack;
279 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
280 should be called from the productions making use of setspecs. */
281 #define PUSH_DECLSPEC_STACK \
283 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
284 all_prefix_attributes), \
289 #define POP_DECLSPEC_STACK \
291 current_declspecs = TREE_VALUE (declspec_stack); \
292 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
293 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
294 declspec_stack = TREE_CHAIN (declspec_stack); \
297 /* For __extension__, save/restore the warning flags which are
298 controlled by __extension__. */
299 #define SAVE_EXT_FLAGS() \
301 | (warn_pointer_arith << 1) \
302 | (warn_traditional << 2) \
305 #define RESTORE_EXT_FLAGS(val) \
307 pedantic = val & 1; \
308 warn_pointer_arith = (val >> 1) & 1; \
309 warn_traditional = (val >> 2) & 1; \
310 flag_iso = (val >> 3) & 1; \
314 /* Objective-C specific parser/lexer information */
316 static enum tree_code objc_inherit_code;
317 static int objc_pq_context = 0, objc_public_flag = 0;
319 /* The following flag is needed to contextualize ObjC lexical analysis.
320 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
321 an identifier to an ObjC class, even if a class with that name
323 static int objc_need_raw_identifier;
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
328 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
331 static bool parsing_iso_function_signature;
333 /* Tell yyparse how to print a token's value, if yydebug is set. */
335 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
337 static void yyprint (FILE *, int, YYSTYPE);
338 static void yyerror (const char *);
339 static int yylexname (void);
340 static inline int _yylex (void);
341 static int yylex (void);
342 static void init_reswords (void);
344 /* Initialisation routine for this file. */
356 pedwarn ("ISO C forbids an empty source file");
361 /* the reason for the strange actions in this rule
362 is so that notype_initdecls when reached via datadef
363 can find a valid list of type and sc specs in $0. */
366 {$<ttype>$ = NULL_TREE; } extdef
367 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
372 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
380 { RESTORE_EXT_FLAGS ($1); }
387 setspecs notype_initdecls ';'
389 error ("ISO C forbids data definition with no type or storage class");
391 warning ("data definition has no type or storage class");
393 POP_DECLSPEC_STACK; }
394 | declspecs_nots setspecs notype_initdecls ';'
395 { POP_DECLSPEC_STACK; }
396 | declspecs_ts setspecs initdecls ';'
397 { POP_DECLSPEC_STACK; }
404 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
408 declspecs_ts setspecs declarator
409 { if (! start_function (current_declspecs, $3,
410 all_prefix_attributes))
413 old_style_parm_decls save_location
414 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
415 store_parm_decls (); }
417 { finish_function ();
418 POP_DECLSPEC_STACK; }
419 | declspecs_ts setspecs declarator error
420 { POP_DECLSPEC_STACK; }
421 | declspecs_nots setspecs notype_declarator
422 { if (! start_function (current_declspecs, $3,
423 all_prefix_attributes))
426 old_style_parm_decls save_location
427 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
428 store_parm_decls (); }
430 { finish_function ();
431 POP_DECLSPEC_STACK; }
432 | declspecs_nots setspecs notype_declarator error
433 { POP_DECLSPEC_STACK; }
434 | setspecs notype_declarator
435 { if (! start_function (NULL_TREE, $2,
436 all_prefix_attributes))
439 old_style_parm_decls save_location
440 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
441 store_parm_decls (); }
443 { finish_function ();
444 POP_DECLSPEC_STACK; }
445 | setspecs notype_declarator error
446 { POP_DECLSPEC_STACK; }
461 { $$ = NEGATE_EXPR; }
465 if (warn_traditional && !in_system_header)
466 warning ("traditional C rejects the unary plus operator");
470 { $$ = PREINCREMENT_EXPR; }
472 { $$ = PREDECREMENT_EXPR; }
474 { $$ = BIT_NOT_EXPR; }
476 { $$ = TRUTH_NOT_EXPR; }
479 expr: nonnull_exprlist
480 { $$ = build_compound_expr ($1); }
491 { $$ = build_tree_list (NULL_TREE, $1); }
492 | nonnull_exprlist ',' expr_no_commas
493 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
498 | '*' cast_expr %prec UNARY
499 { $$ = build_indirect_ref ($2, "unary *"); }
500 /* __extension__ turns off -pedantic for following primary. */
501 | extension cast_expr %prec UNARY
503 RESTORE_EXT_FLAGS ($1); }
504 | unop cast_expr %prec UNARY
505 { $$ = build_unary_op ($1, $2, 0);
506 overflow_warning ($$); }
507 /* Refer to the address of a label as a pointer. */
509 { $$ = finish_label_address_expr ($2); }
510 | sizeof unary_expr %prec UNARY
512 if (TREE_CODE ($2) == COMPONENT_REF
513 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
514 error ("`sizeof' applied to a bit-field");
515 $$ = c_sizeof (TREE_TYPE ($2)); }
516 | sizeof '(' typename ')' %prec HYPERUNARY
518 $$ = c_sizeof (groktypename ($3)); }
519 | alignof unary_expr %prec UNARY
521 $$ = c_alignof_expr ($2); }
522 | alignof '(' typename ')' %prec HYPERUNARY
524 $$ = c_alignof (groktypename ($3)); }
525 | REALPART cast_expr %prec UNARY
526 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
527 | IMAGPART cast_expr %prec UNARY
528 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
532 SIZEOF { skip_evaluation++; }
536 ALIGNOF { skip_evaluation++; }
540 TYPEOF { skip_evaluation++; }
545 | '(' typename ')' cast_expr %prec UNARY
546 { $$ = c_cast_expr ($2, $4); }
551 | expr_no_commas '+' expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas '-' expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas '*' expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas '/' expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas '%' expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas LSHIFT expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas RSHIFT expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas ARITHCOMPARE expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas EQCOMPARE expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '&' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas '|' expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas '^' expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas ANDAND
576 { $1 = (*lang_hooks.truthvalue_conversion)
577 (default_conversion ($1));
578 skip_evaluation += $1 == truthvalue_false_node; }
580 { skip_evaluation -= $1 == truthvalue_false_node;
581 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
582 | expr_no_commas OROR
583 { $1 = (*lang_hooks.truthvalue_conversion)
584 (default_conversion ($1));
585 skip_evaluation += $1 == truthvalue_true_node; }
587 { skip_evaluation -= $1 == truthvalue_true_node;
588 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
590 { $1 = (*lang_hooks.truthvalue_conversion)
591 (default_conversion ($1));
592 skip_evaluation += $1 == truthvalue_false_node; }
594 { skip_evaluation += (($1 == truthvalue_true_node)
595 - ($1 == truthvalue_false_node)); }
597 { skip_evaluation -= $1 == truthvalue_true_node;
598 $$ = build_conditional_expr ($1, $4, $7); }
601 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
602 /* Make sure first operand is calculated only once. */
603 $<ttype>2 = save_expr (default_conversion ($1));
604 $1 = (*lang_hooks.truthvalue_conversion) ($<ttype>2);
605 skip_evaluation += $1 == truthvalue_true_node; }
607 { skip_evaluation -= $1 == truthvalue_true_node;
608 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
609 | expr_no_commas '=' expr_no_commas
611 $$ = build_modify_expr ($1, NOP_EXPR, $3);
612 class = TREE_CODE_CLASS (TREE_CODE ($$));
613 if (IS_EXPR_CODE_CLASS (class))
614 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
616 | expr_no_commas ASSIGN expr_no_commas
618 $$ = build_modify_expr ($1, $2, $3);
619 /* This inhibits warnings in
620 c_common_truthvalue_conversion. */
621 class = TREE_CODE_CLASS (TREE_CODE ($$));
622 if (IS_EXPR_CODE_CLASS (class))
623 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
630 if (yychar == YYEMPTY)
632 $$ = build_external_ref ($1, yychar == '(');
637 { $$ = fname_decl (C_RID_CODE ($$), $$); }
638 | '(' typename ')' '{'
639 { start_init (NULL_TREE, NULL, 0);
640 $2 = groktypename ($2);
641 really_start_incremental_init ($2); }
642 initlist_maybe_comma '}' %prec UNARY
643 { tree constructor = pop_init_level (0);
647 if (pedantic && ! flag_isoc99)
648 pedwarn ("ISO C90 forbids compound literals");
649 $$ = build_compound_literal (type, constructor);
652 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
653 if (IS_EXPR_CODE_CLASS (class))
654 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
657 { $$ = error_mark_node; }
658 | compstmt_primary_start compstmt_nostart ')'
659 { tree saved_last_tree;
662 pedwarn ("ISO C forbids braced-groups within expressions");
663 saved_last_tree = COMPOUND_BODY ($1);
664 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
665 last_tree = saved_last_tree;
666 TREE_CHAIN (last_tree) = NULL_TREE;
668 last_expr_type = void_type_node;
669 $$ = build1 (STMT_EXPR, last_expr_type, $1);
670 TREE_SIDE_EFFECTS ($$) = 1;
672 | compstmt_primary_start error ')'
674 last_tree = COMPOUND_BODY ($1);
675 TREE_CHAIN (last_tree) = NULL_TREE;
676 $$ = error_mark_node;
678 | primary '(' exprlist ')' %prec '.'
679 { $$ = build_function_call ($1, $3); }
680 | VA_ARG '(' expr_no_commas ',' typename ')'
681 { $$ = build_va_arg ($3, groktypename ($5)); }
683 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
689 if (TREE_CODE (c) != INTEGER_CST)
690 error ("first argument to __builtin_choose_expr not a constant");
691 $$ = integer_zerop (c) ? $7 : $5;
693 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
697 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
698 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
700 $$ = comptypes (e1, e2, COMPARE_STRICT)
701 ? build_int_2 (1, 0) : build_int_2 (0, 0);
703 | primary '[' expr ']' %prec '.'
704 { $$ = build_array_ref ($1, $3); }
705 | primary '.' identifier
708 if (!is_public ($1, $3))
709 $$ = error_mark_node;
712 $$ = build_component_ref ($1, $3);
714 | primary POINTSAT identifier
716 tree expr = build_indirect_ref ($1, "->");
719 if (!is_public (expr, $3))
720 $$ = error_mark_node;
723 $$ = build_component_ref (expr, $3);
726 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
728 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
731 { $$ = build_message_expr ($1); }
733 { $$ = build_selector_expr ($1); }
735 { $$ = build_protocol_expr ($1); }
737 { $$ = build_encode_expr ($1); }
739 { $$ = build_objc_string_object ($1); }
743 old_style_parm_decls:
744 old_style_parm_decls_1
746 parsing_iso_function_signature = false; /* Reset after decls. */
750 old_style_parm_decls_1:
753 if (warn_traditional && !in_system_header
754 && parsing_iso_function_signature)
755 warning ("traditional C rejects ISO C style function definitions");
756 if (warn_old_style_definition && !in_system_header
757 && !parsing_iso_function_signature)
758 warning ("old-style parameter declaration");
759 parsing_iso_function_signature = false; /* Reset after warning. */
763 if (warn_old_style_definition && !in_system_header)
764 warning ("old-style parameter declaration");
768 /* The following are analogous to lineno_decl, decls and decl
769 except that they do not allow nested functions.
770 They are used for old-style parm decls. */
772 save_location datadecl
779 | datadecls lineno_datadecl
780 | lineno_datadecl errstmt
783 /* We don't allow prefix attributes here because they cause reduce/reduce
784 conflicts: we can't know whether we're parsing a function decl with
785 attribute suffix, or function defn with attribute prefix on first old
788 declspecs_ts_nosa setspecs initdecls ';'
789 { POP_DECLSPEC_STACK; }
790 | declspecs_nots_nosa setspecs notype_initdecls ';'
791 { POP_DECLSPEC_STACK; }
792 | declspecs_ts_nosa ';'
793 { shadow_tag_warned ($1, 1);
794 pedwarn ("empty declaration"); }
795 | declspecs_nots_nosa ';'
796 { pedwarn ("empty declaration"); }
799 /* This combination which saves a lineno before a decl
800 is the normal thing to use, rather than decl itself.
801 This is to avoid shift/reduce conflicts in contexts
802 where statement labels are allowed. */
808 /* records the type and storage class specs to use for processing
809 the declarators that follow.
810 Maintains a stack of outer-level values of current_declspecs,
811 for the sake of parm declarations nested in function declarators. */
812 setspecs: /* empty */
813 { pending_xref_error ();
815 split_specs_attrs ($<ttype>0,
816 ¤t_declspecs, &prefix_attributes);
817 all_prefix_attributes = prefix_attributes; }
820 /* Possibly attributes after a comma, which should reset all_prefix_attributes
821 to prefix_attributes with these ones chained on the front. */
824 { all_prefix_attributes = chainon ($1, prefix_attributes); }
828 declspecs_ts setspecs initdecls ';'
829 { POP_DECLSPEC_STACK; }
830 | declspecs_nots setspecs notype_initdecls ';'
831 { POP_DECLSPEC_STACK; }
832 | declspecs_ts setspecs nested_function
833 { POP_DECLSPEC_STACK; }
834 | declspecs_nots setspecs notype_nested_function
835 { POP_DECLSPEC_STACK; }
839 { RESTORE_EXT_FLAGS ($1); }
842 /* A list of declaration specifiers. These are:
844 - Storage class specifiers (scspec), which for GCC currently includes
845 function specifiers ("inline").
847 - Type specifiers (typespec_*).
849 - Type qualifiers (TYPE_QUAL).
851 - Attribute specifier lists (attributes).
853 These are stored as a TREE_LIST; the head of the list is the last
854 item in the specifier list. Each entry in the list has either a
855 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
856 is a single other specifier or qualifier; and a TREE_CHAIN that is the
857 rest of the list. TREE_STATIC is set on the list if something other
858 than a storage class specifier or attribute has been seen; this is used
859 to warn for the obsolescent usage of storage class specifiers other than
860 at the start of the list. (Doing this properly would require function
861 specifiers to be handled separately from storage class specifiers.)
863 The various cases below are classified according to:
865 (a) Whether a storage class specifier is included or not; some
866 places in the grammar disallow storage class specifiers (_sc or _nosc).
868 (b) Whether a type specifier has been seen; after a type specifier,
869 a typedef name is an identifier to redeclare (_ts or _nots).
871 (c) Whether the list starts with an attribute; in certain places,
872 the grammar requires specifiers that don't start with an attribute
875 (d) Whether the list ends with an attribute (or a specifier such that
876 any following attribute would have been parsed as part of that specifier);
877 this avoids shift-reduce conflicts in the parsing of attributes
882 (i) Distinguish between function specifiers and storage class specifiers,
883 at least for the purpose of warnings about obsolescent usage.
885 (ii) Halve the number of productions here by eliminating the _sc/_nosc
886 distinction and instead checking where required that storage class
887 specifiers aren't present. */
889 /* Declspecs which contain at least one type specifier or typedef name.
890 (Just `const' or `volatile' is not enough.)
891 A typedef'd name following these is taken as a name to be declared.
892 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
894 declspecs_nosc_nots_nosa_noea:
896 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
897 TREE_STATIC ($$) = 1; }
898 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
899 { $$ = tree_cons (NULL_TREE, $2, $1);
900 TREE_STATIC ($$) = 1; }
901 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
902 { $$ = tree_cons (NULL_TREE, $2, $1);
903 TREE_STATIC ($$) = 1; }
906 declspecs_nosc_nots_nosa_ea:
907 declspecs_nosc_nots_nosa_noea attributes
908 { $$ = tree_cons ($2, NULL_TREE, $1);
909 TREE_STATIC ($$) = TREE_STATIC ($1); }
912 declspecs_nosc_nots_sa_noea:
913 declspecs_nosc_nots_sa_noea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
916 | declspecs_nosc_nots_sa_ea TYPE_QUAL
917 { $$ = tree_cons (NULL_TREE, $2, $1);
918 TREE_STATIC ($$) = 1; }
921 declspecs_nosc_nots_sa_ea:
923 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
924 TREE_STATIC ($$) = 0; }
925 | declspecs_nosc_nots_sa_noea attributes
926 { $$ = tree_cons ($2, NULL_TREE, $1);
927 TREE_STATIC ($$) = TREE_STATIC ($1); }
930 declspecs_nosc_ts_nosa_noea:
932 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
933 TREE_STATIC ($$) = 1; }
934 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
935 { $$ = tree_cons (NULL_TREE, $2, $1);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
938 { $$ = tree_cons (NULL_TREE, $2, $1);
939 TREE_STATIC ($$) = 1; }
940 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
944 { $$ = tree_cons (NULL_TREE, $2, $1);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_nots_nosa_noea typespec_nonattr
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
949 | declspecs_nosc_nots_nosa_ea typespec_nonattr
950 { $$ = tree_cons (NULL_TREE, $2, $1);
951 TREE_STATIC ($$) = 1; }
954 declspecs_nosc_ts_nosa_ea:
956 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
957 TREE_STATIC ($$) = 1; }
958 | declspecs_nosc_ts_nosa_noea attributes
959 { $$ = tree_cons ($2, NULL_TREE, $1);
960 TREE_STATIC ($$) = TREE_STATIC ($1); }
961 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
964 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_nots_nosa_noea typespec_attr
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
970 | declspecs_nosc_nots_nosa_ea typespec_attr
971 { $$ = tree_cons (NULL_TREE, $2, $1);
972 TREE_STATIC ($$) = 1; }
975 declspecs_nosc_ts_sa_noea:
976 declspecs_nosc_ts_sa_noea TYPE_QUAL
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_ts_sa_ea TYPE_QUAL
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
985 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
986 { $$ = tree_cons (NULL_TREE, $2, $1);
987 TREE_STATIC ($$) = 1; }
988 | declspecs_nosc_nots_sa_noea typespec_nonattr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
991 | declspecs_nosc_nots_sa_ea typespec_nonattr
992 { $$ = tree_cons (NULL_TREE, $2, $1);
993 TREE_STATIC ($$) = 1; }
996 declspecs_nosc_ts_sa_ea:
997 declspecs_nosc_ts_sa_noea attributes
998 { $$ = tree_cons ($2, NULL_TREE, $1);
999 TREE_STATIC ($$) = TREE_STATIC ($1); }
1000 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1004 { $$ = tree_cons (NULL_TREE, $2, $1);
1005 TREE_STATIC ($$) = 1; }
1006 | declspecs_nosc_nots_sa_noea typespec_attr
1007 { $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = 1; }
1009 | declspecs_nosc_nots_sa_ea typespec_attr
1010 { $$ = tree_cons (NULL_TREE, $2, $1);
1011 TREE_STATIC ($$) = 1; }
1014 declspecs_sc_nots_nosa_noea:
1016 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1017 TREE_STATIC ($$) = 0; }
1018 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1019 { $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = 1; }
1021 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1022 { $$ = tree_cons (NULL_TREE, $2, $1);
1023 TREE_STATIC ($$) = 1; }
1024 | declspecs_nosc_nots_nosa_noea scspec
1025 { if (extra_warnings && TREE_STATIC ($1))
1026 warning ("`%s' is not at beginning of declaration",
1027 IDENTIFIER_POINTER ($2));
1028 $$ = tree_cons (NULL_TREE, $2, $1);
1029 TREE_STATIC ($$) = TREE_STATIC ($1); }
1030 | declspecs_nosc_nots_nosa_ea scspec
1031 { if (extra_warnings && TREE_STATIC ($1))
1032 warning ("`%s' is not at beginning of declaration",
1033 IDENTIFIER_POINTER ($2));
1034 $$ = tree_cons (NULL_TREE, $2, $1);
1035 TREE_STATIC ($$) = TREE_STATIC ($1); }
1036 | declspecs_sc_nots_nosa_noea scspec
1037 { if (extra_warnings && TREE_STATIC ($1))
1038 warning ("`%s' is not at beginning of declaration",
1039 IDENTIFIER_POINTER ($2));
1040 $$ = tree_cons (NULL_TREE, $2, $1);
1041 TREE_STATIC ($$) = TREE_STATIC ($1); }
1042 | declspecs_sc_nots_nosa_ea scspec
1043 { if (extra_warnings && TREE_STATIC ($1))
1044 warning ("`%s' is not at beginning of declaration",
1045 IDENTIFIER_POINTER ($2));
1046 $$ = tree_cons (NULL_TREE, $2, $1);
1047 TREE_STATIC ($$) = TREE_STATIC ($1); }
1050 declspecs_sc_nots_nosa_ea:
1051 declspecs_sc_nots_nosa_noea attributes
1052 { $$ = tree_cons ($2, NULL_TREE, $1);
1053 TREE_STATIC ($$) = TREE_STATIC ($1); }
1056 declspecs_sc_nots_sa_noea:
1057 declspecs_sc_nots_sa_noea TYPE_QUAL
1058 { $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = 1; }
1060 | declspecs_sc_nots_sa_ea TYPE_QUAL
1061 { $$ = tree_cons (NULL_TREE, $2, $1);
1062 TREE_STATIC ($$) = 1; }
1063 | declspecs_nosc_nots_sa_noea scspec
1064 { if (extra_warnings && TREE_STATIC ($1))
1065 warning ("`%s' is not at beginning of declaration",
1066 IDENTIFIER_POINTER ($2));
1067 $$ = tree_cons (NULL_TREE, $2, $1);
1068 TREE_STATIC ($$) = TREE_STATIC ($1); }
1069 | declspecs_nosc_nots_sa_ea scspec
1070 { if (extra_warnings && TREE_STATIC ($1))
1071 warning ("`%s' is not at beginning of declaration",
1072 IDENTIFIER_POINTER ($2));
1073 $$ = tree_cons (NULL_TREE, $2, $1);
1074 TREE_STATIC ($$) = TREE_STATIC ($1); }
1075 | declspecs_sc_nots_sa_noea scspec
1076 { if (extra_warnings && TREE_STATIC ($1))
1077 warning ("`%s' is not at beginning of declaration",
1078 IDENTIFIER_POINTER ($2));
1079 $$ = tree_cons (NULL_TREE, $2, $1);
1080 TREE_STATIC ($$) = TREE_STATIC ($1); }
1081 | declspecs_sc_nots_sa_ea scspec
1082 { if (extra_warnings && TREE_STATIC ($1))
1083 warning ("`%s' is not at beginning of declaration",
1084 IDENTIFIER_POINTER ($2));
1085 $$ = tree_cons (NULL_TREE, $2, $1);
1086 TREE_STATIC ($$) = TREE_STATIC ($1); }
1089 declspecs_sc_nots_sa_ea:
1090 declspecs_sc_nots_sa_noea attributes
1091 { $$ = tree_cons ($2, NULL_TREE, $1);
1092 TREE_STATIC ($$) = TREE_STATIC ($1); }
1095 declspecs_sc_ts_nosa_noea:
1096 declspecs_sc_ts_nosa_noea TYPE_QUAL
1097 { $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = 1; }
1099 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1100 { $$ = tree_cons (NULL_TREE, $2, $1);
1101 TREE_STATIC ($$) = 1; }
1102 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1103 { $$ = tree_cons (NULL_TREE, $2, $1);
1104 TREE_STATIC ($$) = 1; }
1105 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1106 { $$ = tree_cons (NULL_TREE, $2, $1);
1107 TREE_STATIC ($$) = 1; }
1108 | declspecs_sc_nots_nosa_noea typespec_nonattr
1109 { $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = 1; }
1111 | declspecs_sc_nots_nosa_ea typespec_nonattr
1112 { $$ = tree_cons (NULL_TREE, $2, $1);
1113 TREE_STATIC ($$) = 1; }
1114 | declspecs_nosc_ts_nosa_noea scspec
1115 { if (extra_warnings && TREE_STATIC ($1))
1116 warning ("`%s' is not at beginning of declaration",
1117 IDENTIFIER_POINTER ($2));
1118 $$ = tree_cons (NULL_TREE, $2, $1);
1119 TREE_STATIC ($$) = TREE_STATIC ($1); }
1120 | declspecs_nosc_ts_nosa_ea scspec
1121 { if (extra_warnings && TREE_STATIC ($1))
1122 warning ("`%s' is not at beginning of declaration",
1123 IDENTIFIER_POINTER ($2));
1124 $$ = tree_cons (NULL_TREE, $2, $1);
1125 TREE_STATIC ($$) = TREE_STATIC ($1); }
1126 | declspecs_sc_ts_nosa_noea scspec
1127 { if (extra_warnings && TREE_STATIC ($1))
1128 warning ("`%s' is not at beginning of declaration",
1129 IDENTIFIER_POINTER ($2));
1130 $$ = tree_cons (NULL_TREE, $2, $1);
1131 TREE_STATIC ($$) = TREE_STATIC ($1); }
1132 | declspecs_sc_ts_nosa_ea scspec
1133 { if (extra_warnings && TREE_STATIC ($1))
1134 warning ("`%s' is not at beginning of declaration",
1135 IDENTIFIER_POINTER ($2));
1136 $$ = tree_cons (NULL_TREE, $2, $1);
1137 TREE_STATIC ($$) = TREE_STATIC ($1); }
1140 declspecs_sc_ts_nosa_ea:
1141 declspecs_sc_ts_nosa_noea attributes
1142 { $$ = tree_cons ($2, NULL_TREE, $1);
1143 TREE_STATIC ($$) = TREE_STATIC ($1); }
1144 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1145 { $$ = tree_cons (NULL_TREE, $2, $1);
1146 TREE_STATIC ($$) = 1; }
1147 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_nots_nosa_noea typespec_attr
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1153 | declspecs_sc_nots_nosa_ea typespec_attr
1154 { $$ = tree_cons (NULL_TREE, $2, $1);
1155 TREE_STATIC ($$) = 1; }
1158 declspecs_sc_ts_sa_noea:
1159 declspecs_sc_ts_sa_noea TYPE_QUAL
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_ts_sa_ea TYPE_QUAL
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1166 { $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = 1; }
1168 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1169 { $$ = tree_cons (NULL_TREE, $2, $1);
1170 TREE_STATIC ($$) = 1; }
1171 | declspecs_sc_nots_sa_noea typespec_nonattr
1172 { $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = 1; }
1174 | declspecs_sc_nots_sa_ea typespec_nonattr
1175 { $$ = tree_cons (NULL_TREE, $2, $1);
1176 TREE_STATIC ($$) = 1; }
1177 | declspecs_nosc_ts_sa_noea scspec
1178 { if (extra_warnings && TREE_STATIC ($1))
1179 warning ("`%s' is not at beginning of declaration",
1180 IDENTIFIER_POINTER ($2));
1181 $$ = tree_cons (NULL_TREE, $2, $1);
1182 TREE_STATIC ($$) = TREE_STATIC ($1); }
1183 | declspecs_nosc_ts_sa_ea scspec
1184 { if (extra_warnings && TREE_STATIC ($1))
1185 warning ("`%s' is not at beginning of declaration",
1186 IDENTIFIER_POINTER ($2));
1187 $$ = tree_cons (NULL_TREE, $2, $1);
1188 TREE_STATIC ($$) = TREE_STATIC ($1); }
1189 | declspecs_sc_ts_sa_noea scspec
1190 { if (extra_warnings && TREE_STATIC ($1))
1191 warning ("`%s' is not at beginning of declaration",
1192 IDENTIFIER_POINTER ($2));
1193 $$ = tree_cons (NULL_TREE, $2, $1);
1194 TREE_STATIC ($$) = TREE_STATIC ($1); }
1195 | declspecs_sc_ts_sa_ea scspec
1196 { if (extra_warnings && TREE_STATIC ($1))
1197 warning ("`%s' is not at beginning of declaration",
1198 IDENTIFIER_POINTER ($2));
1199 $$ = tree_cons (NULL_TREE, $2, $1);
1200 TREE_STATIC ($$) = TREE_STATIC ($1); }
1203 declspecs_sc_ts_sa_ea:
1204 declspecs_sc_ts_sa_noea attributes
1205 { $$ = tree_cons ($2, NULL_TREE, $1);
1206 TREE_STATIC ($$) = TREE_STATIC ($1); }
1207 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1208 { $$ = tree_cons (NULL_TREE, $2, $1);
1209 TREE_STATIC ($$) = 1; }
1210 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1211 { $$ = tree_cons (NULL_TREE, $2, $1);
1212 TREE_STATIC ($$) = 1; }
1213 | declspecs_sc_nots_sa_noea typespec_attr
1214 { $$ = tree_cons (NULL_TREE, $2, $1);
1215 TREE_STATIC ($$) = 1; }
1216 | declspecs_sc_nots_sa_ea typespec_attr
1217 { $$ = tree_cons (NULL_TREE, $2, $1);
1218 TREE_STATIC ($$) = 1; }
1221 /* Particular useful classes of declspecs. */
1223 declspecs_nosc_ts_nosa_noea
1224 | declspecs_nosc_ts_nosa_ea
1225 | declspecs_nosc_ts_sa_noea
1226 | declspecs_nosc_ts_sa_ea
1227 | declspecs_sc_ts_nosa_noea
1228 | declspecs_sc_ts_nosa_ea
1229 | declspecs_sc_ts_sa_noea
1230 | declspecs_sc_ts_sa_ea
1234 declspecs_nosc_nots_nosa_noea
1235 | declspecs_nosc_nots_nosa_ea
1236 | declspecs_nosc_nots_sa_noea
1237 | declspecs_nosc_nots_sa_ea
1238 | declspecs_sc_nots_nosa_noea
1239 | declspecs_sc_nots_nosa_ea
1240 | declspecs_sc_nots_sa_noea
1241 | declspecs_sc_nots_sa_ea
1245 declspecs_nosc_ts_nosa_noea
1246 | declspecs_nosc_ts_nosa_ea
1247 | declspecs_sc_ts_nosa_noea
1248 | declspecs_sc_ts_nosa_ea
1251 declspecs_nots_nosa:
1252 declspecs_nosc_nots_nosa_noea
1253 | declspecs_nosc_nots_nosa_ea
1254 | declspecs_sc_nots_nosa_noea
1255 | declspecs_sc_nots_nosa_ea
1259 declspecs_nosc_ts_nosa_noea
1260 | declspecs_nosc_ts_nosa_ea
1261 | declspecs_nosc_ts_sa_noea
1262 | declspecs_nosc_ts_sa_ea
1265 declspecs_nosc_nots:
1266 declspecs_nosc_nots_nosa_noea
1267 | declspecs_nosc_nots_nosa_ea
1268 | declspecs_nosc_nots_sa_noea
1269 | declspecs_nosc_nots_sa_ea
1273 declspecs_nosc_ts_nosa_noea
1274 | declspecs_nosc_ts_nosa_ea
1275 | declspecs_nosc_ts_sa_noea
1276 | declspecs_nosc_ts_sa_ea
1277 | declspecs_nosc_nots_nosa_noea
1278 | declspecs_nosc_nots_nosa_ea
1279 | declspecs_nosc_nots_sa_noea
1280 | declspecs_nosc_nots_sa_ea
1284 declspecs_nosc_nots_nosa_noea
1285 | declspecs_nosc_nots_nosa_ea
1286 | declspecs_nosc_nots_sa_noea
1287 | declspecs_nosc_nots_sa_ea
1288 | declspecs_nosc_ts_nosa_noea
1289 | declspecs_nosc_ts_nosa_ea
1290 | declspecs_nosc_ts_sa_noea
1291 | declspecs_nosc_ts_sa_ea
1292 | declspecs_sc_nots_nosa_noea
1293 | declspecs_sc_nots_nosa_ea
1294 | declspecs_sc_nots_sa_noea
1295 | declspecs_sc_nots_sa_ea
1296 | declspecs_sc_ts_nosa_noea
1297 | declspecs_sc_ts_nosa_ea
1298 | declspecs_sc_ts_sa_noea
1299 | declspecs_sc_ts_sa_ea
1302 /* A (possibly empty) sequence of type qualifiers and attributes. */
1303 maybe_type_quals_attrs:
1306 | declspecs_nosc_nots
1310 /* A type specifier (but not a type qualifier).
1311 Once we have seen one of these in a declaration,
1312 if a typedef name appears then it is being redeclared.
1314 The _reserved versions start with a reserved word and may appear anywhere
1315 in the declaration specifiers; the _nonreserved versions may only
1316 appear before any other type specifiers, and after that are (if names)
1319 FIXME: should the _nonreserved version be restricted to names being
1320 redeclared only? The other entries there relate only the GNU extensions
1321 and Objective C, and are historically parsed thus, and don't make sense
1322 after other type specifiers, but it might be cleaner to count them as
1325 _attr means: specifiers that either end with attributes,
1326 or are such that any following attributes would
1327 be parsed as part of the specifier.
1329 _nonattr: specifiers. */
1332 typespec_reserved_nonattr
1333 | typespec_nonreserved_nonattr
1337 typespec_reserved_attr
1340 typespec_reserved_nonattr:
1342 { OBJC_NEED_RAW_IDENTIFIER (1); }
1346 typespec_reserved_attr:
1350 typespec_nonreserved_nonattr:
1352 { /* For a typedef name, record the meaning, not the name.
1353 In case of `foo foo, bar;'. */
1354 $$ = lookup_name ($1); }
1356 | CLASSNAME protocolrefs
1357 { $$ = get_static_reference ($1, $2); }
1358 | OBJECTNAME protocolrefs
1359 { $$ = get_object_reference ($2); }
1361 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1362 - nisse@lysator.liu.se */
1363 | non_empty_protocolrefs
1364 { $$ = get_object_reference ($1); }
1366 | typeof '(' expr ')'
1367 { skip_evaluation--;
1368 if (TREE_CODE ($3) == COMPONENT_REF
1369 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1370 error ("`typeof' applied to a bit-field");
1371 $$ = TREE_TYPE ($3); }
1372 | typeof '(' typename ')'
1373 { skip_evaluation--; $$ = groktypename ($3); }
1376 /* typespec_nonreserved_attr does not exist. */
1380 | initdecls ',' maybe_resetattrs initdcl
1385 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1389 declarator maybeasm maybe_attribute '='
1390 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1391 chainon ($3, all_prefix_attributes));
1392 start_init ($<ttype>$, $2, global_bindings_p ()); }
1394 /* Note how the declaration of the variable is in effect while its init is parsed! */
1396 finish_decl ($<ttype>5, $6, $2); }
1397 | declarator maybeasm maybe_attribute
1398 { tree d = start_decl ($1, current_declspecs, 0,
1399 chainon ($3, all_prefix_attributes));
1400 finish_decl (d, NULL_TREE, $2);
1405 notype_declarator maybeasm maybe_attribute '='
1406 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1407 chainon ($3, all_prefix_attributes));
1408 start_init ($<ttype>$, $2, global_bindings_p ()); }
1410 /* Note how the declaration of the variable is in effect while its init is parsed! */
1412 finish_decl ($<ttype>5, $6, $2); }
1413 | notype_declarator maybeasm maybe_attribute
1414 { tree d = start_decl ($1, current_declspecs, 0,
1415 chainon ($3, all_prefix_attributes));
1416 finish_decl (d, NULL_TREE, $2); }
1418 /* the * rules are dummies to accept the Apollo extended syntax
1419 so that the header files compile. */
1430 | attributes attribute
1431 { $$ = chainon ($1, $2); }
1435 ATTRIBUTE '(' '(' attribute_list ')' ')'
1442 | attribute_list ',' attrib
1443 { $$ = chainon ($1, $3); }
1450 { $$ = build_tree_list ($1, NULL_TREE); }
1451 | any_word '(' IDENTIFIER ')'
1452 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1453 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1454 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1455 | any_word '(' exprlist ')'
1456 { $$ = build_tree_list ($1, $3); }
1459 /* This still leaves out most reserved keywords,
1460 shouldn't we include them? */
1474 /* Initializers. `init' is the entry point. */
1479 { really_start_incremental_init (NULL_TREE); }
1480 initlist_maybe_comma '}'
1481 { $$ = pop_init_level (0); }
1483 { $$ = error_mark_node; }
1486 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1487 initlist_maybe_comma:
1490 pedwarn ("ISO C forbids empty initializer braces"); }
1491 | initlist1 maybecomma
1496 | initlist1 ',' initelt
1499 /* `initelt' is a single element of an initializer.
1500 It may use braces. */
1502 designator_list '=' initval
1503 { if (pedantic && ! flag_isoc99)
1504 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1505 | designator initval
1507 pedwarn ("obsolete use of designated initializer without `='"); }
1509 { set_init_label ($1);
1511 pedwarn ("obsolete use of designated initializer with `:'"); }
1519 { push_init_level (0); }
1520 initlist_maybe_comma '}'
1521 { process_init_element (pop_init_level (0)); }
1523 { process_init_element ($1); }
1529 | designator_list designator
1534 { set_init_label ($2); }
1535 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1536 { set_init_index ($2, $4);
1538 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1539 | '[' expr_no_commas ']'
1540 { set_init_index ($2, NULL_TREE); }
1546 pedwarn ("ISO C forbids nested functions");
1548 push_function_context ();
1549 if (! start_function (current_declspecs, $1,
1550 all_prefix_attributes))
1552 pop_function_context ();
1555 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1557 old_style_parm_decls save_location
1558 { tree decl = current_function_decl;
1559 DECL_SOURCE_LOCATION (decl) = $4;
1560 store_parm_decls (); }
1561 /* This used to use compstmt_or_error.
1562 That caused a bug with input `f(g) int g {}',
1563 where the use of YYERROR1 above caused an error
1564 which then was handled by compstmt_or_error.
1565 There followed a repeated execution of that same rule,
1566 which called YYERROR1 again, and so on. */
1568 { tree decl = current_function_decl;
1570 pop_function_context ();
1571 add_decl_stmt (decl); }
1574 notype_nested_function:
1577 pedwarn ("ISO C forbids nested functions");
1579 push_function_context ();
1580 if (! start_function (current_declspecs, $1,
1581 all_prefix_attributes))
1583 pop_function_context ();
1586 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1588 old_style_parm_decls save_location
1589 { tree decl = current_function_decl;
1590 DECL_SOURCE_LOCATION (decl) = $4;
1591 store_parm_decls (); }
1592 /* This used to use compstmt_or_error.
1593 That caused a bug with input `f(g) int g {}',
1594 where the use of YYERROR1 above caused an error
1595 which then was handled by compstmt_or_error.
1596 There followed a repeated execution of that same rule,
1597 which called YYERROR1 again, and so on. */
1599 { tree decl = current_function_decl;
1601 pop_function_context ();
1602 add_decl_stmt (decl); }
1605 /* Any kind of declarator (thus, all declarators allowed
1606 after an explicit typespec). */
1609 after_type_declarator
1613 /* A declarator that is allowed only after an explicit typespec. */
1615 after_type_declarator:
1616 '(' maybe_attribute after_type_declarator ')'
1617 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1618 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1619 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1620 /* | after_type_declarator '(' error ')' %prec '.'
1621 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1622 poplevel (0, 0, 0); } */
1623 | after_type_declarator array_declarator %prec '.'
1624 { $$ = set_array_declarator_type ($2, $1, 0); }
1625 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1626 { $$ = make_pointer_declarator ($2, $3); }
1633 /* Kinds of declarator that can appear in a parameter list
1634 in addition to notype_declarator. This is like after_type_declarator
1635 but does not allow a typedef name in parentheses as an identifier
1636 (because it would conflict with a function with that typedef as arg). */
1638 parm_declarator_starttypename
1639 | parm_declarator_nostarttypename
1642 parm_declarator_starttypename:
1643 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1644 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1645 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1646 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1647 poplevel (0, 0, 0); } */
1648 | parm_declarator_starttypename array_declarator %prec '.'
1649 { $$ = set_array_declarator_type ($2, $1, 0); }
1656 parm_declarator_nostarttypename:
1657 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_nostarttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1664 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1665 { $$ = make_pointer_declarator ($2, $3); }
1666 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1667 { $$ = make_pointer_declarator ($2, $3); }
1668 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1669 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1672 /* A declarator allowed whether or not there has been
1673 an explicit typespec. These cannot redeclare a typedef-name. */
1676 notype_declarator '(' parmlist_or_identifiers %prec '.'
1677 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1678 /* | notype_declarator '(' error ')' %prec '.'
1679 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1680 poplevel (0, 0, 0); } */
1681 | '(' maybe_attribute notype_declarator ')'
1682 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1683 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1684 { $$ = make_pointer_declarator ($2, $3); }
1685 | notype_declarator array_declarator %prec '.'
1686 { $$ = set_array_declarator_type ($2, $1, 0); }
1711 /* structsp_attr: struct/union/enum specifiers that either
1712 end with attributes, or are such that any following attributes would
1713 be parsed as part of the struct/union/enum specifier.
1715 structsp_nonattr: other struct/union/enum specifiers. */
1718 struct_head identifier '{'
1719 { $$ = start_struct (RECORD_TYPE, $2);
1720 /* Start scope of tag before parsing components. */
1722 component_decl_list '}' maybe_attribute
1723 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1724 chainon ($1, $7)); }
1725 | struct_head '{' component_decl_list '}' maybe_attribute
1726 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1727 nreverse ($3), chainon ($1, $5));
1729 | union_head identifier '{'
1730 { $$ = start_struct (UNION_TYPE, $2); }
1731 component_decl_list '}' maybe_attribute
1732 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1733 chainon ($1, $7)); }
1734 | union_head '{' component_decl_list '}' maybe_attribute
1735 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1736 nreverse ($3), chainon ($1, $5));
1738 | enum_head identifier '{'
1739 { $$ = start_enum ($2); }
1740 enumlist maybecomma_warn '}' maybe_attribute
1741 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1742 chainon ($1, $8)); }
1744 { $$ = start_enum (NULL_TREE); }
1745 enumlist maybecomma_warn '}' maybe_attribute
1746 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1747 chainon ($1, $7)); }
1751 struct_head identifier
1752 { $$ = xref_tag (RECORD_TYPE, $2); }
1753 | union_head identifier
1754 { $$ = xref_tag (UNION_TYPE, $2); }
1755 | enum_head identifier
1756 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1757 /* In ISO C, enumerated types can be referred to
1758 only if already defined. */
1759 if (pedantic && !COMPLETE_TYPE_P ($$))
1760 pedwarn ("ISO C forbids forward references to `enum' types"); }
1771 { if (pedantic && ! flag_isoc99)
1772 pedwarn ("comma at end of enumerator list"); }
1775 /* We chain the components in reverse order. They are put in forward
1776 order in structsp_attr.
1778 Note that component_declarator returns single decls, so components
1779 and components_notype can use TREE_CHAIN directly, wheras components
1780 and components_notype return lists (of comma separated decls), so
1781 component_decl_list and component_decl_list2 must use chainon.
1783 The theory behind all this is that there will be more semicolon
1784 separated fields than comma separated fields, and so we'll be
1785 minimizing the number of node traversals required by chainon. */
1787 component_decl_list:
1788 component_decl_list2
1790 | component_decl_list2 component_decl
1791 { $$ = chainon ($2, $1);
1792 pedwarn ("no semicolon at end of struct or union"); }
1795 component_decl_list2: /* empty */
1797 | component_decl_list2 component_decl ';'
1798 { $$ = chainon ($2, $1); }
1799 | component_decl_list2 ';'
1801 pedwarn ("extra semicolon in struct or union specified"); }
1803 /* foo(sizeof(struct{ @defs(ClassName)})); */
1804 | DEFS '(' CLASSNAME ')'
1805 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1810 declspecs_nosc_ts setspecs components
1812 POP_DECLSPEC_STACK; }
1813 | declspecs_nosc_ts setspecs
1815 /* Support for unnamed structs or unions as members of
1816 structs or unions (which is [a] useful and [b] supports
1819 pedwarn ("ISO C doesn't support unnamed structs/unions");
1821 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1822 POP_DECLSPEC_STACK; }
1823 | declspecs_nosc_nots setspecs components_notype
1825 POP_DECLSPEC_STACK; }
1826 | declspecs_nosc_nots
1828 pedwarn ("ISO C forbids member declarations with no members");
1829 shadow_tag_warned ($1, pedantic);
1833 | extension component_decl
1835 RESTORE_EXT_FLAGS ($1); }
1839 component_declarator
1840 | components ',' maybe_resetattrs component_declarator
1841 { TREE_CHAIN ($4) = $1; $$ = $4; }
1845 component_notype_declarator
1846 | components_notype ',' maybe_resetattrs component_notype_declarator
1847 { TREE_CHAIN ($4) = $1; $$ = $4; }
1850 component_declarator:
1851 declarator maybe_attribute
1852 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1853 decl_attributes (&$$,
1854 chainon ($2, all_prefix_attributes), 0); }
1855 | declarator ':' expr_no_commas maybe_attribute
1856 { $$ = grokfield ($1, current_declspecs, $3);
1857 decl_attributes (&$$,
1858 chainon ($4, all_prefix_attributes), 0); }
1859 | ':' expr_no_commas maybe_attribute
1860 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1861 decl_attributes (&$$,
1862 chainon ($3, all_prefix_attributes), 0); }
1865 component_notype_declarator:
1866 notype_declarator maybe_attribute
1867 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1868 decl_attributes (&$$,
1869 chainon ($2, all_prefix_attributes), 0); }
1870 | notype_declarator ':' expr_no_commas maybe_attribute
1871 { $$ = grokfield ($1, current_declspecs, $3);
1872 decl_attributes (&$$,
1873 chainon ($4, all_prefix_attributes), 0); }
1874 | ':' expr_no_commas maybe_attribute
1875 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1876 decl_attributes (&$$,
1877 chainon ($3, all_prefix_attributes), 0); }
1880 /* We chain the enumerators in reverse order.
1881 They are put in forward order in structsp_attr. */
1885 | enumlist ',' enumerator
1886 { if ($1 == error_mark_node)
1889 TREE_CHAIN ($3) = $1, $$ = $3; }
1891 { $$ = error_mark_node; }
1897 { $$ = build_enumerator ($1, NULL_TREE); }
1898 | identifier '=' expr_no_commas
1899 { $$ = build_enumerator ($1, $3); }
1904 { pending_xref_error ();
1907 { $$ = build_tree_list ($<ttype>2, $3); }
1910 absdcl: /* an absolute declarator */
1916 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1918 { $$ = build_tree_list (build_tree_list (current_declspecs,
1920 all_prefix_attributes); }
1922 { $$ = build_tree_list (build_tree_list (current_declspecs,
1924 all_prefix_attributes); }
1925 | absdcl1_noea attributes
1926 { $$ = build_tree_list (build_tree_list (current_declspecs,
1928 chainon ($2, all_prefix_attributes)); }
1931 absdcl1: /* a nonempty absolute declarator */
1938 | '*' maybe_type_quals_attrs absdcl1_noea
1939 { $$ = make_pointer_declarator ($2, $3); }
1943 '*' maybe_type_quals_attrs
1944 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1945 | '*' maybe_type_quals_attrs absdcl1_ea
1946 { $$ = make_pointer_declarator ($2, $3); }
1950 '(' maybe_attribute absdcl1 ')'
1951 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1952 | direct_absdcl1 '(' parmlist
1953 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1954 | direct_absdcl1 array_declarator
1955 { $$ = set_array_declarator_type ($2, $1, 1); }
1957 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1959 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1962 /* The [...] part of a declarator for an array type. */
1965 '[' maybe_type_quals_attrs expr_no_commas ']'
1966 { $$ = build_array_declarator ($3, $2, 0, 0); }
1967 | '[' maybe_type_quals_attrs ']'
1968 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1969 | '[' maybe_type_quals_attrs '*' ']'
1970 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1971 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1972 { $$ = build_array_declarator ($4, $3, 1, 0); }
1973 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1974 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1975 { $$ = build_array_declarator ($4, $2, 1, 0); }
1978 /* A nonempty series of declarations and statements (possibly followed by
1979 some labels) that can form the body of a compound statement.
1980 NOTE: we don't allow labels on declarations; this might seem like a
1981 natural extension, but there would be a conflict between attributes
1982 on the label and prefix attributes on the declaration. */
1985 lineno_stmt_decl_or_labels_ending_stmt
1986 | lineno_stmt_decl_or_labels_ending_decl
1987 | lineno_stmt_decl_or_labels_ending_label
1989 error ("label at end of compound statement");
1991 | lineno_stmt_decl_or_labels_ending_error
1994 lineno_stmt_decl_or_labels_ending_stmt:
1996 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1997 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1998 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1999 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2002 lineno_stmt_decl_or_labels_ending_decl:
2004 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2006 if ((pedantic && !flag_isoc99)
2007 || warn_declaration_after_statement)
2008 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2010 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2011 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2014 lineno_stmt_decl_or_labels_ending_label:
2016 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2017 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2018 | lineno_stmt_decl_or_labels_ending_label lineno_label
2019 | lineno_stmt_decl_or_labels_ending_error lineno_label
2022 lineno_stmt_decl_or_labels_ending_error:
2024 | lineno_stmt_decl_or_labels errstmt
2027 lineno_stmt_decl_or_labels:
2028 lineno_stmt_decl_or_labels_ending_stmt
2029 | lineno_stmt_decl_or_labels_ending_decl
2030 | lineno_stmt_decl_or_labels_ending_label
2031 | lineno_stmt_decl_or_labels_ending_error
2037 pushlevel: /* empty */
2040 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2044 poplevel: /* empty */
2047 if (c_dialect_objc ())
2048 objc_clear_super_receiver ();
2050 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2054 /* Start and end blocks created for the new scopes of C99. */
2055 c99_block_start: /* empty */
2058 $$ = c_begin_compound_stmt ();
2061 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2068 /* Productions using c99_block_start and c99_block_end will need to do what's
2069 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2070 $1 is the value of c99_block_start and $2 of c99_block_end. */
2071 c99_block_end: /* empty */
2074 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2075 $$ = poplevel (KEEP_MAYBE, 0, 0);
2076 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2077 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2084 /* Read zero or more forward-declarations for labels
2085 that nested functions can jump to. */
2090 pedwarn ("ISO C forbids label declarations"); }
2095 | label_decls label_decl
2099 LABEL identifiers_or_typenames ';'
2101 for (link = $2; link; link = TREE_CHAIN (link))
2103 tree label = declare_label (TREE_VALUE (link));
2104 C_DECLARED_LABEL_FLAG (label) = 1;
2105 add_decl_stmt (label);
2110 /* This is the body of a function definition.
2111 It causes syntax errors to ignore to the next openbrace. */
2118 compstmt_start: '{' { compstmt_count++;
2119 $$ = c_begin_compound_stmt (); }
2122 compstmt_nostart: '}'
2123 { $$ = convert (void_type_node, integer_zero_node); }
2124 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2125 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2126 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2127 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2131 compstmt_contents_nonempty:
2136 compstmt_primary_start:
2138 { if (current_function_decl == 0)
2140 error ("braced-group within expression allowed only inside a function");
2143 /* We must force a BLOCK for this level
2144 so that, if it is not expanded later,
2145 there is a way to turn off the entire subtree of blocks
2146 that are contained in it. */
2149 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2153 compstmt: compstmt_start compstmt_nostart
2154 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2155 last_expr_type = NULL_TREE;
2159 /* Value is number of statements counted as of the closeparen. */
2161 if_prefix c99_block_lineno_labeled_stmt
2162 { c_finish_then (); }
2163 /* Make sure c_expand_end_cond is run once
2164 for each call to c_expand_start_cond.
2165 Otherwise a crash is likely. */
2170 /* We must build the IF_STMT node before parsing its
2171 condition so that STMT_LINENO refers to the line
2172 containing the "if", and not the line containing
2173 the close-parenthesis.
2175 c_begin_if_stmt returns the IF_STMT node, which
2176 we later pass to c_expand_start_cond to fill
2177 in the condition and other tidbits. */
2179 { $<ttype>$ = c_begin_if_stmt (); }
2181 { c_expand_start_cond ((*lang_hooks.truthvalue_conversion) ($4),
2182 compstmt_count,$<ttype>2);
2183 $<itype>$ = stmt_count;
2184 if_stmt_locus = $<location>-1; }
2187 /* This is a subroutine of stmt.
2188 It is used twice, once for valid DO statements
2189 and once for catching errors in parsing the end test. */
2194 c_in_iteration_stmt++;
2196 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2198 /* In the event that a parse error prevents
2199 parsing the complete do-statement, set the
2200 condition now. Otherwise, we can get crashes at
2201 RTL-generation time. */
2202 DO_COND ($<ttype>$) = error_mark_node; }
2203 c99_block_lineno_labeled_stmt WHILE
2205 RECHAIN_STMTS ($$, DO_BODY ($$));
2206 c_in_iteration_stmt--; }
2209 /* The forced readahead in here is because we might be at the end of a
2210 line, and the line and file won't be bumped until yylex absorbs the
2211 first token on the next line. */
2214 { if (yychar == YYEMPTY)
2216 $$ = input_location; }
2219 lineno_labeled_stmt:
2221 | lineno_label lineno_labeled_stmt
2224 /* Like lineno_labeled_stmt, but a block in C99. */
2225 c99_block_lineno_labeled_stmt:
2226 c99_block_start lineno_labeled_stmt c99_block_end
2228 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2235 STMT_LINENO ($2) = $1.line;
2236 /* ??? We currently have no way of recording
2237 the filename for a statement. This probably
2238 matters little in practice at the moment,
2239 but I suspect that problems will occur when
2240 doing inlining at the tree level. */
2249 STMT_LINENO ($2) = $1.line;
2254 select_or_iter_stmt:
2256 { c_expand_start_else ();
2257 $<itype>1 = stmt_count; }
2258 c99_block_lineno_labeled_stmt
2260 c_expand_end_cond ();
2261 if (extra_warnings && stmt_count == $<itype>1)
2262 warning ("empty body in an else-statement"); }
2263 | simple_if %prec IF
2264 { c_expand_end_cond ();
2265 /* This warning is here instead of in simple_if, because we
2266 do not want a warning if an empty if is followed by an
2267 else statement. Increment stmt_count so we don't
2268 give a second error if this is a nested `if'. */
2269 if (extra_warnings && stmt_count++ == $<itype>1)
2270 warning ("%Hempty body in an if-statement",
2272 /* Make sure c_expand_end_cond is run once
2273 for each call to c_expand_start_cond.
2274 Otherwise a crash is likely. */
2275 | simple_if ELSE error
2276 { c_expand_end_cond (); }
2277 /* We must build the WHILE_STMT node before parsing its
2278 condition so that STMT_LINENO refers to the line
2279 containing the "while", and not the line containing
2280 the close-parenthesis.
2282 c_begin_while_stmt returns the WHILE_STMT node, which
2283 we later pass to c_finish_while_stmt_cond to fill
2284 in the condition and other tidbits. */
2287 $<ttype>$ = c_begin_while_stmt (); }
2289 { c_in_iteration_stmt++;
2290 $4 = (*lang_hooks.truthvalue_conversion) ($4);
2291 c_finish_while_stmt_cond
2292 ((*lang_hooks.truthvalue_conversion) ($4), $<ttype>2);
2293 $<ttype>$ = add_stmt ($<ttype>2); }
2294 c99_block_lineno_labeled_stmt
2295 { c_in_iteration_stmt--;
2296 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2299 { DO_COND ($1) = (*lang_hooks.truthvalue_conversion) ($3); }
2300 | do_stmt_start error
2303 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2304 NULL_TREE, NULL_TREE);
2305 add_stmt ($<ttype>$); }
2308 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2311 FOR_COND ($<ttype>2)
2312 = (*lang_hooks.truthvalue_conversion) ($6); }
2314 { c_in_iteration_stmt++;
2315 FOR_EXPR ($<ttype>2) = $9; }
2316 c99_block_lineno_labeled_stmt
2317 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2318 c_in_iteration_stmt--;}
2319 | SWITCH '(' expr ')'
2321 $<ttype>$ = c_start_case ($3);
2323 c99_block_lineno_labeled_stmt
2330 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2332 { check_for_loop_decls (); }
2341 /* Parse a single real statement, not including any labels. */
2344 { stmt_count++; $$ = $1; }
2347 $$ = c_expand_expr_stmt ($1); }
2348 | c99_block_start select_or_iter_stmt c99_block_end
2350 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2354 if (!(c_in_iteration_stmt || c_in_case_stmt))
2356 error ("break statement not within loop or switch");
2360 $$ = add_stmt (build_break_stmt ()); }
2363 if (!c_in_iteration_stmt)
2365 error ("continue statement not within a loop");
2369 $$ = add_stmt (build_continue_stmt ()); }
2372 $$ = c_expand_return (NULL_TREE); }
2375 $$ = c_expand_return ($2); }
2377 | GOTO identifier ';'
2380 decl = lookup_label ($2);
2383 TREE_USED (decl) = 1;
2384 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2391 pedwarn ("ISO C forbids `goto *expr;'");
2393 $3 = convert (ptr_type_node, $3);
2394 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2400 $$ = objc_build_throw_stmt ($2);
2404 $$ = objc_build_throw_stmt (NULL_TREE);
2406 | objc_try_catch_stmt
2407 { objc_build_finally_prologue (); }
2409 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2410 | AT_SYNCHRONIZED '(' expr ')'
2411 { objc_build_synchronized_prologue ($3); }
2413 { $$ = objc_build_synchronized_epilogue (); }
2416 objc_try_catch_stmt:
2418 { objc_build_try_epilogue (1); }
2420 { objc_build_catch_epilogue (); $$ = 1; }
2422 { objc_build_try_epilogue (0); $$ = 0; }
2428 { objc_build_try_prologue (); }
2433 objc_catch_list objc_catch_block
2438 AT_CATCH '(' parm ')'
2439 { objc_build_catch_stmt ($3); }
2452 /* Any kind of label, including jump labels and case labels.
2453 ANSI C accepts labels only before statements, but we allow them
2454 also at the end of a compound statement. */
2456 label: CASE expr_no_commas ':'
2458 $$ = do_case ($2, NULL_TREE); }
2459 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2461 $$ = do_case ($2, $4); }
2464 $$ = do_case (NULL_TREE, NULL_TREE); }
2465 | identifier save_location ':' maybe_attribute
2466 { tree label = define_label ($2, $1);
2470 decl_attributes (&label, $4, 0);
2471 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2478 /* Asm expressions and statements */
2480 /* simple_asm_expr is used in restricted contexts, where a full
2481 expression with inputs and outputs does not make sense. */
2483 ASM_KEYWORD '(' STRING ')'
2487 /* maybeasm: used for assembly names for declarations */
2494 /* asmdef: asm() outside a function body. */
2497 { assemble_asm ($1); }
2500 /* Full-blown asm statement with inputs, outputs, clobbers, and
2501 volatile tag allowed. */
2503 ASM_KEYWORD maybe_volatile '(' asm_argument ')' ';'
2505 $$ = build_asm_stmt ($2, $4); }
2511 { $$ = build_asm_expr ($1, 0, 0, 0, true); }
2512 /* output operands */
2513 | STRING ':' asm_operands
2514 { $$ = build_asm_expr ($1, $3, 0, 0, false); }
2515 /* output and input operands */
2516 | STRING ':' asm_operands ':' asm_operands
2517 { $$ = build_asm_expr ($1, $3, $5, 0, false); }
2518 /* output and input operands and clobbers */
2519 | STRING ':' asm_operands ':' asm_operands ':' asm_clobbers
2520 { $$ = build_asm_expr ($1, $3, $5, $7, false); }
2523 /* Either 'volatile' or nothing. First thing in an `asm' statement. */
2529 { if ($1 != ridpointers[RID_VOLATILE])
2531 warning ("%E qualifier ignored on asm", $1);
2539 /* These are the operands other than the first string and colon
2540 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2541 asm_operands: /* empty */
2543 | nonnull_asm_operands
2546 nonnull_asm_operands:
2548 | nonnull_asm_operands ',' asm_operand
2549 { $$ = chainon ($1, $3); }
2554 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2555 | '[' identifier ']' STRING '(' expr ')'
2556 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2557 IDENTIFIER_POINTER ($2));
2558 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2563 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2564 | asm_clobbers ',' STRING
2565 { $$ = tree_cons (NULL_TREE, $3, $1); }
2568 /* This is what appears inside the parens in a function declarator.
2569 Its value is a list of ..._TYPE nodes. Attributes must appear here
2570 to avoid a conflict with their appearance after an open parenthesis
2571 in an abstract declarator, as in
2572 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2576 declare_parm_level (); }
2579 poplevel (0, 0, 0); }
2585 { mark_forward_parm_decls (); }
2587 { /* Dummy action so attributes are in known place
2588 on parser stack. */ }
2592 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2595 /* This is what appears inside the parens in a function declarator.
2596 Is value is represented in the format that grokdeclarator expects. */
2597 parmlist_2: /* empty */
2598 { $$ = get_parm_info (0); }
2600 { $$ = get_parm_info (0);
2601 /* Gcc used to allow this as an extension. However, it does
2602 not work for all targets, and thus has been disabled.
2603 Also, since func (...) and func () are indistinguishable,
2604 it caused problems with the code in expand_builtin which
2605 tries to verify that BUILT_IN_NEXT_ARG is being used
2607 error ("ISO C requires a named argument before `...'");
2608 parsing_iso_function_signature = true;
2611 { $$ = get_parm_info (1);
2612 parsing_iso_function_signature = true;
2614 | parms ',' ELLIPSIS
2615 { $$ = get_parm_info (0);
2616 parsing_iso_function_signature = true;
2622 { push_parm_decl ($1); }
2624 { push_parm_decl ($3); }
2627 /* A single parameter declaration or parameter type name,
2628 as found in a parmlist. */
2630 declspecs_ts setspecs parm_declarator maybe_attribute
2631 { $$ = build_tree_list (build_tree_list (current_declspecs,
2633 chainon ($4, all_prefix_attributes));
2634 POP_DECLSPEC_STACK; }
2635 | declspecs_ts setspecs notype_declarator maybe_attribute
2636 { $$ = build_tree_list (build_tree_list (current_declspecs,
2638 chainon ($4, all_prefix_attributes));
2639 POP_DECLSPEC_STACK; }
2640 | declspecs_ts setspecs absdcl_maybe_attribute
2642 POP_DECLSPEC_STACK; }
2643 | declspecs_nots setspecs notype_declarator maybe_attribute
2644 { $$ = build_tree_list (build_tree_list (current_declspecs,
2646 chainon ($4, all_prefix_attributes));
2647 POP_DECLSPEC_STACK; }
2649 | declspecs_nots setspecs absdcl_maybe_attribute
2651 POP_DECLSPEC_STACK; }
2654 /* The first parm, which must suck attributes from off the top of the parser
2657 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2658 { $$ = build_tree_list (build_tree_list (current_declspecs,
2660 chainon ($4, all_prefix_attributes));
2661 POP_DECLSPEC_STACK; }
2662 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2663 { $$ = build_tree_list (build_tree_list (current_declspecs,
2665 chainon ($4, all_prefix_attributes));
2666 POP_DECLSPEC_STACK; }
2667 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2669 POP_DECLSPEC_STACK; }
2670 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2671 { $$ = build_tree_list (build_tree_list (current_declspecs,
2673 chainon ($4, all_prefix_attributes));
2674 POP_DECLSPEC_STACK; }
2676 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2678 POP_DECLSPEC_STACK; }
2683 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2684 all_prefix_attributes = prefix_attributes; }
2687 /* This is used in a function definition
2688 where either a parmlist or an identifier list is ok.
2689 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2690 parmlist_or_identifiers:
2693 declare_parm_level (); }
2694 parmlist_or_identifiers_1
2696 poplevel (0, 0, 0); }
2699 parmlist_or_identifiers_1:
2703 for (t = $1; t; t = TREE_CHAIN (t))
2704 if (TREE_VALUE (t) == NULL_TREE)
2705 error ("`...' in old-style identifier list");
2706 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2708 /* Make sure we have a parmlist after attributes. */
2710 && (TREE_CODE ($$) != TREE_LIST
2711 || TREE_PURPOSE ($$) == 0
2712 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2717 /* A nonempty list of identifiers. */
2720 { $$ = build_tree_list (NULL_TREE, $1); }
2721 | identifiers ',' IDENTIFIER
2722 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2725 /* A nonempty list of identifiers, including typenames. */
2726 identifiers_or_typenames:
2728 { $$ = build_tree_list (NULL_TREE, $1); }
2729 | identifiers_or_typenames ',' identifier
2730 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2735 { $$ = SAVE_EXT_FLAGS();
2737 warn_pointer_arith = 0;
2738 warn_traditional = 0;
2743 /* Objective-C productions. */
2753 if (objc_implementation_context)
2755 finish_class (objc_implementation_context);
2756 objc_ivar_chain = NULL_TREE;
2757 objc_implementation_context = NULL_TREE;
2760 warning ("`@end' must appear in an implementation context");
2764 /* A nonempty list of identifiers. */
2767 { $$ = build_tree_list (NULL_TREE, $1); }
2768 | identifier_list ',' identifier
2769 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2773 CLASS identifier_list ';'
2775 objc_declare_class ($2);
2780 ALIAS identifier identifier ';'
2782 objc_declare_alias ($2, $3);
2787 ':' identifier { $$ = $2; }
2788 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2792 '{' ivar_decl_list '}'
2797 INTERFACE identifier superclass protocolrefs
2799 objc_interface_context = objc_ivar_context
2800 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2801 objc_public_flag = 0;
2805 continue_class (objc_interface_context);
2809 finish_class (objc_interface_context);
2810 objc_interface_context = NULL_TREE;
2813 | IMPLEMENTATION identifier superclass
2815 objc_implementation_context = objc_ivar_context
2816 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2817 objc_public_flag = 0;
2822 = continue_class (objc_implementation_context);
2825 | INTERFACE identifier '(' identifier ')' protocolrefs
2827 objc_interface_context
2828 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2829 continue_class (objc_interface_context);
2833 finish_class (objc_interface_context);
2834 objc_interface_context = NULL_TREE;
2837 | IMPLEMENTATION identifier '(' identifier ')'
2839 objc_implementation_context
2840 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2842 = continue_class (objc_implementation_context);
2847 PROTOCOL identifier protocolrefs
2849 objc_pq_context = 1;
2850 objc_interface_context
2851 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2855 objc_pq_context = 0;
2856 finish_protocol(objc_interface_context);
2857 objc_interface_context = NULL_TREE;
2859 /* The @protocol forward-declaration production introduces a
2860 reduce/reduce conflict on ';', which should be resolved in
2861 favor of the production 'identifier_list -> identifier'. */
2862 | PROTOCOL identifier_list ';'
2864 objc_declare_protocols ($2);
2873 | non_empty_protocolrefs
2876 non_empty_protocolrefs:
2877 ARITHCOMPARE identifier_list ARITHCOMPARE
2879 if ($1 == LT_EXPR && $3 == GT_EXPR)
2887 ivar_decl_list visibility_spec ivar_decls
2892 PRIVATE { objc_public_flag = 2; }
2893 | PROTECTED { objc_public_flag = 0; }
2894 | PUBLIC { objc_public_flag = 1; }
2902 | ivar_decls ivar_decl ';'
2906 pedwarn ("extra semicolon in struct or union specified");
2911 /* There is a shift-reduce conflict here, because `components' may
2912 start with a `typename'. It happens that shifting (the default resolution)
2913 does the right thing, because it treats the `typename' as part of
2914 a `typed_typespecs'.
2916 It is possible that this same technique would allow the distinction
2917 between `notype_initdecls' and `initdecls' to be eliminated.
2918 But I am being cautious and not trying it. */
2921 declspecs_nosc_ts setspecs ivars
2923 POP_DECLSPEC_STACK; }
2924 | declspecs_nosc_nots setspecs ivars
2926 POP_DECLSPEC_STACK; }
2935 | ivars ',' maybe_resetattrs ivar_declarator
2941 $$ = add_instance_variable (objc_ivar_context,
2943 $1, current_declspecs,
2946 | declarator ':' expr_no_commas
2948 $$ = add_instance_variable (objc_ivar_context,
2950 $1, current_declspecs, $3);
2952 | ':' expr_no_commas
2954 $$ = add_instance_variable (objc_ivar_context,
2957 current_declspecs, $2);
2963 { objc_inherit_code = CLASS_METHOD_DECL; }
2965 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2971 objc_pq_context = 1;
2972 if (!objc_implementation_context)
2973 fatal_error ("method definition not in class context");
2977 objc_pq_context = 0;
2978 objc_add_method (objc_implementation_context,
2980 objc_inherit_code == CLASS_METHOD_DECL);
2981 start_method_def ($3);
2985 continue_method_def ();
2989 finish_method_def ();
2993 /* the reason for the strange actions in this rule
2994 is so that notype_initdecls when reached via datadef
2995 can find a valid list of type and sc specs in $0. */
2999 | methodprotolist methodproto
3000 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
3011 /* Remember protocol qualifiers in prototypes. */
3012 objc_pq_context = 1;
3016 /* Forget protocol qualifiers here. */
3017 objc_pq_context = 0;
3018 objc_add_method (objc_interface_context,
3020 objc_inherit_code == CLASS_METHOD_DECL);
3026 '(' typename ')' unaryselector
3028 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3033 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3036 | '(' typename ')' keywordselector optparmlist
3038 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3041 | keywordselector optparmlist
3043 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3047 /* "optarglist" assumes that start_method_def has already been called...
3048 if it is not, the "xdecls" will not be placed in the proper scope */
3055 /* to get around the following situation: "int foo (int a) int b; {}" that
3056 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3071 declspecs_ts setspecs myparms ';'
3072 { POP_DECLSPEC_STACK; }
3074 { shadow_tag ($1); }
3075 | declspecs_nots ';'
3076 { pedwarn ("empty declaration"); }
3081 { push_parm_decl ($1); }
3082 | myparms ',' myparm
3083 { push_parm_decl ($3); }
3086 /* A single parameter declaration or parameter type name,
3087 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3090 parm_declarator maybe_attribute
3091 { $$ = build_tree_list (build_tree_list (current_declspecs,
3093 chainon ($2, all_prefix_attributes)); }
3094 | notype_declarator maybe_attribute
3095 { $$ = build_tree_list (build_tree_list (current_declspecs,
3097 chainon ($2, all_prefix_attributes)); }
3098 | absdcl_maybe_attribute
3109 /* oh what a kludge! */
3110 $$ = objc_ellipsis_node;
3118 /* returns a tree list node generated by get_parm_info */
3131 | keywordselector keyworddecl
3133 $$ = chainon ($1, $2);
3146 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3147 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3148 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3149 | TYPESPEC | TYPE_QUAL
3153 selector ':' '(' typename ')' identifier
3155 $$ = build_keyword_decl ($1, $4, $6);
3158 | selector ':' identifier
3160 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3163 | ':' '(' typename ')' identifier
3165 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3170 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3181 | keywordarglist keywordarg
3183 $$ = chainon ($1, $2);
3191 if (TREE_CHAIN ($1) == NULL_TREE)
3192 /* just return the expr., remove a level of indirection */
3193 $$ = TREE_VALUE ($1);
3195 /* we have a comma expr., we will collapse later */
3201 selector ':' keywordexpr
3203 $$ = build_tree_list ($1, $3);
3207 $$ = build_tree_list (NULL_TREE, $2);
3215 $$ = get_class_reference ($1);
3219 $$ = get_class_reference ($1);
3224 '[' receiver messageargs ']'
3225 { $$ = build_tree_list ($2, $3); }
3235 | keywordnamelist keywordname
3237 $$ = chainon ($1, $2);
3244 $$ = build_tree_list ($1, NULL_TREE);
3248 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3253 SELECTOR '(' selectorarg ')'
3260 PROTOCOL '(' identifier ')'
3266 /* extension to support C-structures in the archiver */
3269 ENCODE '(' typename ')'
3271 $$ = groktypename ($3);
3278 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3279 cpplib.h's token codes into yacc's token codes. */
3281 static enum cpp_ttype last_token;
3283 /* The reserved keyword table. */
3287 ENUM_BITFIELD(rid) rid : 16;
3288 unsigned int disable : 16;
3291 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3293 #define D_C89 0x01 /* not in C89 */
3294 #define D_EXT 0x02 /* GCC extension */
3295 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3296 #define D_OBJC 0x08 /* Objective C only */
3298 static const struct resword reswords[] =
3300 { "_Bool", RID_BOOL, 0 },
3301 { "_Complex", RID_COMPLEX, 0 },
3302 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3303 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3304 { "__alignof", RID_ALIGNOF, 0 },
3305 { "__alignof__", RID_ALIGNOF, 0 },
3306 { "__asm", RID_ASM, 0 },
3307 { "__asm__", RID_ASM, 0 },
3308 { "__attribute", RID_ATTRIBUTE, 0 },
3309 { "__attribute__", RID_ATTRIBUTE, 0 },
3310 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3311 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3312 { "__builtin_va_arg", RID_VA_ARG, 0 },
3313 { "__complex", RID_COMPLEX, 0 },
3314 { "__complex__", RID_COMPLEX, 0 },
3315 { "__const", RID_CONST, 0 },
3316 { "__const__", RID_CONST, 0 },
3317 { "__extension__", RID_EXTENSION, 0 },
3318 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3319 { "__imag", RID_IMAGPART, 0 },
3320 { "__imag__", RID_IMAGPART, 0 },
3321 { "__inline", RID_INLINE, 0 },
3322 { "__inline__", RID_INLINE, 0 },
3323 { "__label__", RID_LABEL, 0 },
3324 { "__ptrbase", RID_PTRBASE, 0 },
3325 { "__ptrbase__", RID_PTRBASE, 0 },
3326 { "__ptrextent", RID_PTREXTENT, 0 },
3327 { "__ptrextent__", RID_PTREXTENT, 0 },
3328 { "__ptrvalue", RID_PTRVALUE, 0 },
3329 { "__ptrvalue__", RID_PTRVALUE, 0 },
3330 { "__real", RID_REALPART, 0 },
3331 { "__real__", RID_REALPART, 0 },
3332 { "__restrict", RID_RESTRICT, 0 },
3333 { "__restrict__", RID_RESTRICT, 0 },
3334 { "__signed", RID_SIGNED, 0 },
3335 { "__signed__", RID_SIGNED, 0 },
3336 { "__thread", RID_THREAD, 0 },
3337 { "__typeof", RID_TYPEOF, 0 },
3338 { "__typeof__", RID_TYPEOF, 0 },
3339 { "__volatile", RID_VOLATILE, 0 },
3340 { "__volatile__", RID_VOLATILE, 0 },
3341 { "asm", RID_ASM, D_EXT },
3342 { "auto", RID_AUTO, 0 },
3343 { "break", RID_BREAK, 0 },
3344 { "case", RID_CASE, 0 },
3345 { "char", RID_CHAR, 0 },
3346 { "const", RID_CONST, 0 },
3347 { "continue", RID_CONTINUE, 0 },
3348 { "default", RID_DEFAULT, 0 },
3349 { "do", RID_DO, 0 },
3350 { "double", RID_DOUBLE, 0 },
3351 { "else", RID_ELSE, 0 },
3352 { "enum", RID_ENUM, 0 },
3353 { "extern", RID_EXTERN, 0 },
3354 { "float", RID_FLOAT, 0 },
3355 { "for", RID_FOR, 0 },
3356 { "goto", RID_GOTO, 0 },
3357 { "if", RID_IF, 0 },
3358 { "inline", RID_INLINE, D_EXT89 },
3359 { "int", RID_INT, 0 },
3360 { "long", RID_LONG, 0 },
3361 { "register", RID_REGISTER, 0 },
3362 { "restrict", RID_RESTRICT, D_C89 },
3363 { "return", RID_RETURN, 0 },
3364 { "short", RID_SHORT, 0 },
3365 { "signed", RID_SIGNED, 0 },
3366 { "sizeof", RID_SIZEOF, 0 },
3367 { "static", RID_STATIC, 0 },
3368 { "struct", RID_STRUCT, 0 },
3369 { "switch", RID_SWITCH, 0 },
3370 { "typedef", RID_TYPEDEF, 0 },
3371 { "typeof", RID_TYPEOF, D_EXT },
3372 { "union", RID_UNION, 0 },
3373 { "unsigned", RID_UNSIGNED, 0 },
3374 { "void", RID_VOID, 0 },
3375 { "volatile", RID_VOLATILE, 0 },
3376 { "while", RID_WHILE, 0 },
3378 { "id", RID_ID, D_OBJC },
3380 /* These objc keywords are recognized only immediately after
3382 { "class", RID_AT_CLASS, D_OBJC },
3383 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3384 { "defs", RID_AT_DEFS, D_OBJC },
3385 { "encode", RID_AT_ENCODE, D_OBJC },
3386 { "end", RID_AT_END, D_OBJC },
3387 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3388 { "interface", RID_AT_INTERFACE, D_OBJC },
3389 { "private", RID_AT_PRIVATE, D_OBJC },
3390 { "protected", RID_AT_PROTECTED, D_OBJC },
3391 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3392 { "public", RID_AT_PUBLIC, D_OBJC },
3393 { "selector", RID_AT_SELECTOR, D_OBJC },
3394 { "throw", RID_AT_THROW, D_OBJC },
3395 { "try", RID_AT_TRY, D_OBJC },
3396 { "catch", RID_AT_CATCH, D_OBJC },
3397 { "finally", RID_AT_FINALLY, D_OBJC },
3398 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3399 /* These are recognized only in protocol-qualifier context
3401 { "bycopy", RID_BYCOPY, D_OBJC },
3402 { "byref", RID_BYREF, D_OBJC },
3403 { "in", RID_IN, D_OBJC },
3404 { "inout", RID_INOUT, D_OBJC },
3405 { "oneway", RID_ONEWAY, D_OBJC },
3406 { "out", RID_OUT, D_OBJC },
3409 #define N_reswords (sizeof reswords / sizeof (struct resword))
3411 /* Table mapping from RID_* constants to yacc token numbers.
3412 Unfortunately we have to have entries for all the keywords in all
3414 static const short rid_to_yy[RID_MAX] =
3416 /* RID_STATIC */ STATIC,
3417 /* RID_UNSIGNED */ TYPESPEC,
3418 /* RID_LONG */ TYPESPEC,
3419 /* RID_CONST */ TYPE_QUAL,
3420 /* RID_EXTERN */ SCSPEC,
3421 /* RID_REGISTER */ SCSPEC,
3422 /* RID_TYPEDEF */ SCSPEC,
3423 /* RID_SHORT */ TYPESPEC,
3424 /* RID_INLINE */ SCSPEC,
3425 /* RID_VOLATILE */ TYPE_QUAL,
3426 /* RID_SIGNED */ TYPESPEC,
3427 /* RID_AUTO */ SCSPEC,
3428 /* RID_RESTRICT */ TYPE_QUAL,
3431 /* RID_COMPLEX */ TYPESPEC,
3432 /* RID_THREAD */ SCSPEC,
3436 /* RID_VIRTUAL */ 0,
3437 /* RID_EXPLICIT */ 0,
3439 /* RID_MUTABLE */ 0,
3442 /* RID_IN */ TYPE_QUAL,
3443 /* RID_OUT */ TYPE_QUAL,
3444 /* RID_INOUT */ TYPE_QUAL,
3445 /* RID_BYCOPY */ TYPE_QUAL,
3446 /* RID_BYREF */ TYPE_QUAL,
3447 /* RID_ONEWAY */ TYPE_QUAL,
3450 /* RID_INT */ TYPESPEC,
3451 /* RID_CHAR */ TYPESPEC,
3452 /* RID_FLOAT */ TYPESPEC,
3453 /* RID_DOUBLE */ TYPESPEC,
3454 /* RID_VOID */ TYPESPEC,
3455 /* RID_ENUM */ ENUM,
3456 /* RID_STRUCT */ STRUCT,
3457 /* RID_UNION */ UNION,
3459 /* RID_ELSE */ ELSE,
3460 /* RID_WHILE */ WHILE,
3463 /* RID_SWITCH */ SWITCH,
3464 /* RID_CASE */ CASE,
3465 /* RID_DEFAULT */ DEFAULT,
3466 /* RID_BREAK */ BREAK,
3467 /* RID_CONTINUE */ CONTINUE,
3468 /* RID_RETURN */ RETURN,
3469 /* RID_GOTO */ GOTO,
3470 /* RID_SIZEOF */ SIZEOF,
3473 /* RID_ASM */ ASM_KEYWORD,
3474 /* RID_TYPEOF */ TYPEOF,
3475 /* RID_ALIGNOF */ ALIGNOF,
3476 /* RID_ATTRIBUTE */ ATTRIBUTE,
3477 /* RID_VA_ARG */ VA_ARG,
3478 /* RID_EXTENSION */ EXTENSION,
3479 /* RID_IMAGPART */ IMAGPART,
3480 /* RID_REALPART */ REALPART,
3481 /* RID_LABEL */ LABEL,
3482 /* RID_PTRBASE */ PTR_BASE,
3483 /* RID_PTREXTENT */ PTR_EXTENT,
3484 /* RID_PTRVALUE */ PTR_VALUE,
3486 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3487 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3489 /* RID_FUNCTION_NAME */ FUNC_NAME,
3490 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3491 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3494 /* RID_BOOL */ TYPESPEC,
3498 /* RID_PRIVATE */ 0,
3499 /* RID_PROTECTED */ 0,
3500 /* RID_TEMPLATE */ 0,
3505 /* RID_NAMESPACE */ 0,
3507 /* RID_OFFSETOF */ 0,
3508 /* RID_OPERATOR */ 0,
3513 /* RID_TYPENAME */ 0,
3518 /* RID_CONSTCAST */ 0,
3519 /* RID_DYNCAST */ 0,
3520 /* RID_REINTCAST */ 0,
3521 /* RID_STATCAST */ 0,
3524 /* RID_ID */ OBJECTNAME,
3525 /* RID_AT_ENCODE */ ENCODE,
3526 /* RID_AT_END */ END,
3527 /* RID_AT_CLASS */ CLASS,
3528 /* RID_AT_ALIAS */ ALIAS,
3529 /* RID_AT_DEFS */ DEFS,
3530 /* RID_AT_PRIVATE */ PRIVATE,
3531 /* RID_AT_PROTECTED */ PROTECTED,
3532 /* RID_AT_PUBLIC */ PUBLIC,
3533 /* RID_AT_PROTOCOL */ PROTOCOL,
3534 /* RID_AT_SELECTOR */ SELECTOR,
3535 /* RID_AT_THROW */ AT_THROW,
3536 /* RID_AT_TRY */ AT_TRY,
3537 /* RID_AT_CATCH */ AT_CATCH,
3538 /* RID_AT_FINALLY */ AT_FINALLY,
3539 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3540 /* RID_AT_INTERFACE */ INTERFACE,
3541 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3545 init_reswords (void)
3549 int mask = (flag_isoc99 ? 0 : D_C89)
3550 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3552 if (!c_dialect_objc ())
3555 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3556 for (i = 0; i < N_reswords; i++)
3558 /* If a keyword is disabled, do not enter it into the table
3559 and so create a canonical spelling that isn't a keyword. */
3560 if (reswords[i].disable & mask)
3563 id = get_identifier (reswords[i].word);
3564 C_RID_CODE (id) = reswords[i].rid;
3565 C_IS_RESERVED_WORD (id) = 1;
3566 ridpointers [(int) reswords[i].rid] = id;
3570 #define NAME(type) cpp_type2name (type)
3573 yyerror (const char *msgid)
3575 c_parse_error (msgid, last_token, yylval.ttype);
3584 int objc_force_identifier = objc_need_raw_identifier;
3585 OBJC_NEED_RAW_IDENTIFIER (0);
3588 if (C_IS_RESERVED_WORD (yylval.ttype))
3590 enum rid rid_code = C_RID_CODE (yylval.ttype);
3593 /* Turn non-typedefed refs to "id" into plain identifiers; this
3594 allows constructs like "void foo(id id);" to work. */
3595 if (rid_code == RID_ID)
3597 decl = lookup_name (yylval.ttype);
3598 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3602 if (!OBJC_IS_AT_KEYWORD (rid_code)
3603 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3606 /* Return the canonical spelling for this keyword. */
3607 yylval.ttype = ridpointers[(int) rid_code];
3608 return rid_to_yy[(int) rid_code];
3612 decl = lookup_name (yylval.ttype);
3615 if (TREE_CODE (decl) == TYPE_DECL)
3621 tree objc_interface_decl = is_class_name (yylval.ttype);
3622 /* ObjC class names are in the same namespace as variables and
3623 typedefs, and hence are shadowed by local declarations. */
3624 if (objc_interface_decl
3625 && (global_bindings_p ()
3626 || (!objc_force_identifier && !decl)))
3628 yylval.ttype = objc_interface_decl;
3641 last_token = c_lex (&yylval.ttype);
3644 case CPP_EQ: return '=';
3645 case CPP_NOT: return '!';
3646 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3647 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3648 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3649 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3650 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3651 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3652 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3653 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3654 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3655 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3656 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3657 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3659 case CPP_COMPL: return '~';
3660 case CPP_AND_AND: return ANDAND;
3661 case CPP_OR_OR: return OROR;
3662 case CPP_QUERY: return '?';
3663 case CPP_OPEN_PAREN: return '(';
3664 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3665 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3666 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3667 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3669 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3670 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3671 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3672 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3673 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3674 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3675 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3676 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3677 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3678 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3680 case CPP_OPEN_SQUARE: return '[';
3681 case CPP_CLOSE_SQUARE: return ']';
3682 case CPP_OPEN_BRACE: return '{';
3683 case CPP_CLOSE_BRACE: return '}';
3684 case CPP_ELLIPSIS: return ELLIPSIS;
3686 case CPP_PLUS_PLUS: return PLUSPLUS;
3687 case CPP_MINUS_MINUS: return MINUSMINUS;
3688 case CPP_DEREF: return POINTSAT;
3689 case CPP_DOT: return '.';
3691 /* The following tokens may affect the interpretation of any
3692 identifiers following, if doing Objective-C. */
3693 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3694 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3695 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3696 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3702 return yylexname ();
3705 /* This only happens in Objective-C; it must be a keyword. */
3706 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3717 case CPP_OBJC_STRING:
3720 /* These tokens are C++ specific (and will not be generated
3721 in C mode, but let's be cautious). */
3723 case CPP_DEREF_STAR:
3729 /* These tokens should not survive translation phase 4. */
3732 error ("syntax error at '%s' token", NAME(last_token));
3745 timevar_push (TV_LEX);
3747 timevar_pop (TV_LEX);
3751 /* Function used when yydebug is set, to print a token in more detail. */
3754 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3758 fprintf (file, " [%s]", NAME(last_token));
3769 if (IDENTIFIER_POINTER (t))
3770 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3774 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3775 if (TREE_CODE (t) == INTEGER_CST)
3778 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3779 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3785 /* This is not the ideal place to put these, but we have to get them out
3786 of c-lex.c because cp/lex.c has its own versions. */
3788 /* Parse the file. */
3793 /* In case there were missing closebraces, get us back to the global
3795 while (! global_bindings_p ())
3797 /* __FUNCTION__ is defined at file scope (""). This
3798 call may not be necessary as my tests indicate it
3799 still works without it. */
3800 finish_fname_decls ();
3804 free (malloced_yyss);
3805 free (malloced_yyvs);
3810 #include "gt-c-parse.h"