1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only.
24 @@ifc ... @@end_ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
45 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
57 /* Like YYERROR but do call yyerror. */
58 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
60 /* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
67 static short *malloced_yyss;
68 static void *malloced_yyvs;
70 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
75 newsize = *(YYSSZ) *= 2; \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
86 memcpy (newss, *(SS), (SSSIZE)); \
88 memcpy (newvs, *(VS), (VSSIZE)); \
90 if (!newss || !newvs) \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
104 %union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
111 /* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
116 /* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118 %token SCSPEC /* Storage class other than static. */
119 %token STATIC /* Static storage class. */
121 /* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
129 /* Character or numeric constants.
130 yylval is the node for the constant. */
133 /* String constants in raw form.
134 yylval is a STRING_CST node. */
138 /* "...", used for functions with variable arglists. */
141 /* the reserved words */
142 /* SCO include files test "ASM", so use something else. */
143 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145 %token ATTRIBUTE EXTENSION LABEL
146 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147 %token PTR_VALUE PTR_BASE PTR_EXTENT
150 /* Add precedence rules to solve dangling else s/r conflict */
154 /* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
158 %right <code> ASSIGN '='
159 %right <code> '?' ':'
165 %left <code> EQCOMPARE
166 %left <code> ARITHCOMPARE
167 %left <code> LSHIFT RSHIFT
169 %left <code> '*' '/' '%'
170 %right <code> UNARY PLUSPLUS MINUSMINUS
172 %left <code> POINTSAT '.' '(' '['
174 /* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
178 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
182 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
183 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
185 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
186 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
187 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
188 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
189 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
190 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
191 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
192 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
193 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
194 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
195 %type <ttype> declspecs_ts declspecs_nots
196 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
197 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
198 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
199 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
200 %type <ttype> typespec_nonreserved_nonattr
202 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
203 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
204 %type <ttype> init maybeasm
205 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
206 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
207 %type <ttype> any_word extension
209 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
210 %type <ttype> do_stmt_start poplevel stmt label
212 %type <ttype> c99_block_start c99_block_end
213 %type <ttype> declarator
214 %type <ttype> notype_declarator after_type_declarator
215 %type <ttype> parm_declarator
216 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
217 %type <ttype> array_declarator
219 %type <ttype> structsp_attr structsp_nonattr
220 %type <ttype> component_decl_list component_decl_list2
221 %type <ttype> component_decl components components_notype component_declarator
222 %type <ttype> component_notype_declarator
223 %type <ttype> enumlist enumerator
224 %type <ttype> struct_head union_head enum_head
225 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
226 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
227 %type <ttype> xexpr parms parm firstparm identifiers
229 %type <ttype> parmlist parmlist_1 parmlist_2
230 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
231 %type <ttype> identifiers_or_typenames
233 %type <itype> setspecs setspecs_fp
235 %type <location> save_location
238 /* the Objective-C nonterminals */
240 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
241 %type <ttype> methoddecl unaryselector keywordselector selector
242 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
243 %type <ttype> keywordexpr keywordarglist keywordarg
244 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
245 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
246 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
248 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
250 %type <ttype> superclass
251 %type <itype> objc_try_catch_stmt objc_finally_block
255 /* Number of statements (loosely speaking) and compound statements
257 static int stmt_count;
258 static int compstmt_count;
260 /* Input location of the end of the body of last simple_if;
261 used by the stmt-rule immediately after simple_if returns. */
262 static location_t if_stmt_locus;
265 /* List of types and structure classes of the current declaration. */
266 static GTY(()) tree current_declspecs;
267 static GTY(()) tree prefix_attributes;
269 /* List of all the attributes applying to the identifier currently being
270 declared; includes prefix_attributes and possibly some more attributes
271 just after a comma. */
272 static GTY(()) tree all_prefix_attributes;
274 /* Stack of saved values of current_declspecs, prefix_attributes and
275 all_prefix_attributes. */
276 static GTY(()) tree declspec_stack;
278 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
279 should be called from the productions making use of setspecs. */
280 #define PUSH_DECLSPEC_STACK \
282 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
283 all_prefix_attributes), \
288 #define POP_DECLSPEC_STACK \
290 current_declspecs = TREE_VALUE (declspec_stack); \
291 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
292 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
293 declspec_stack = TREE_CHAIN (declspec_stack); \
296 /* For __extension__, save/restore the warning flags which are
297 controlled by __extension__. */
298 #define SAVE_EXT_FLAGS() \
300 | (warn_pointer_arith << 1) \
301 | (warn_traditional << 2) \
304 #define RESTORE_EXT_FLAGS(tval) \
306 int val = tree_low_cst (tval, 0); \
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. */
381 | ASM_KEYWORD '(' expr ')' ';'
383 if ((TREE_CODE ($3) == ADDR_EXPR
384 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
385 || TREE_CODE ($3) == STRING_CST)
388 error ("argument of `asm' is not a constant string"); }
390 { RESTORE_EXT_FLAGS ($1); }
394 setspecs notype_initdecls ';'
396 error ("ISO C forbids data definition with no type or storage class");
398 warning ("data definition has no type or storage class");
400 POP_DECLSPEC_STACK; }
401 | declspecs_nots setspecs notype_initdecls ';'
402 { POP_DECLSPEC_STACK; }
403 | declspecs_ts setspecs initdecls ';'
404 { POP_DECLSPEC_STACK; }
411 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
415 declspecs_ts setspecs declarator
416 { if (! start_function (current_declspecs, $3,
417 all_prefix_attributes))
420 old_style_parm_decls save_location
421 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
422 store_parm_decls (); }
424 { finish_function ();
425 POP_DECLSPEC_STACK; }
426 | declspecs_ts setspecs declarator error
427 { POP_DECLSPEC_STACK; }
428 | declspecs_nots setspecs notype_declarator
429 { if (! start_function (current_declspecs, $3,
430 all_prefix_attributes))
433 old_style_parm_decls save_location
434 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
435 store_parm_decls (); }
437 { finish_function ();
438 POP_DECLSPEC_STACK; }
439 | declspecs_nots setspecs notype_declarator error
440 { POP_DECLSPEC_STACK; }
441 | setspecs notype_declarator
442 { if (! start_function (NULL_TREE, $2,
443 all_prefix_attributes))
446 old_style_parm_decls save_location
447 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
448 store_parm_decls (); }
450 { finish_function ();
451 POP_DECLSPEC_STACK; }
452 | setspecs notype_declarator error
453 { POP_DECLSPEC_STACK; }
468 { $$ = NEGATE_EXPR; }
472 if (warn_traditional && !in_system_header)
473 warning ("traditional C rejects the unary plus operator");
477 { $$ = PREINCREMENT_EXPR; }
479 { $$ = PREDECREMENT_EXPR; }
481 { $$ = BIT_NOT_EXPR; }
483 { $$ = TRUTH_NOT_EXPR; }
486 expr: nonnull_exprlist
487 { $$ = build_compound_expr ($1); }
498 { $$ = build_tree_list (NULL_TREE, $1); }
499 | nonnull_exprlist ',' expr_no_commas
500 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
505 | '*' cast_expr %prec UNARY
506 { $$ = build_indirect_ref ($2, "unary *"); }
507 /* __extension__ turns off -pedantic for following primary. */
508 | extension cast_expr %prec UNARY
510 RESTORE_EXT_FLAGS ($1); }
511 | unop cast_expr %prec UNARY
512 { $$ = build_unary_op ($1, $2, 0);
513 overflow_warning ($$); }
514 /* Refer to the address of a label as a pointer. */
516 { $$ = finish_label_address_expr ($2); }
517 | sizeof unary_expr %prec UNARY
519 if (TREE_CODE ($2) == COMPONENT_REF
520 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
521 error ("`sizeof' applied to a bit-field");
522 $$ = c_sizeof (TREE_TYPE ($2)); }
523 | sizeof '(' typename ')' %prec HYPERUNARY
525 $$ = c_sizeof (groktypename ($3)); }
526 | alignof unary_expr %prec UNARY
528 $$ = c_alignof_expr ($2); }
529 | alignof '(' typename ')' %prec HYPERUNARY
531 $$ = c_alignof (groktypename ($3)); }
532 | REALPART cast_expr %prec UNARY
533 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
534 | IMAGPART cast_expr %prec UNARY
535 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
539 SIZEOF { skip_evaluation++; }
543 ALIGNOF { skip_evaluation++; }
547 TYPEOF { skip_evaluation++; }
552 | '(' typename ')' cast_expr %prec UNARY
553 { $$ = c_cast_expr ($2, $4); }
558 | expr_no_commas '+' expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas '-' expr_no_commas
561 { $$ = parser_build_binary_op ($2, $1, $3); }
562 | expr_no_commas '*' expr_no_commas
563 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas '/' expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas '%' expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas LSHIFT expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas RSHIFT expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas ARITHCOMPARE expr_no_commas
573 { $$ = parser_build_binary_op ($2, $1, $3); }
574 | expr_no_commas EQCOMPARE expr_no_commas
575 { $$ = parser_build_binary_op ($2, $1, $3); }
576 | expr_no_commas '&' expr_no_commas
577 { $$ = parser_build_binary_op ($2, $1, $3); }
578 | expr_no_commas '|' expr_no_commas
579 { $$ = parser_build_binary_op ($2, $1, $3); }
580 | expr_no_commas '^' expr_no_commas
581 { $$ = parser_build_binary_op ($2, $1, $3); }
582 | expr_no_commas ANDAND
583 { $1 = c_common_truthvalue_conversion
584 (default_conversion ($1));
585 skip_evaluation += $1 == truthvalue_false_node; }
587 { skip_evaluation -= $1 == truthvalue_false_node;
588 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
589 | expr_no_commas OROR
590 { $1 = c_common_truthvalue_conversion
591 (default_conversion ($1));
592 skip_evaluation += $1 == truthvalue_true_node; }
594 { skip_evaluation -= $1 == truthvalue_true_node;
595 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
597 { $1 = c_common_truthvalue_conversion
598 (default_conversion ($1));
599 skip_evaluation += $1 == truthvalue_false_node; }
601 { skip_evaluation += (($1 == truthvalue_true_node)
602 - ($1 == truthvalue_false_node)); }
604 { skip_evaluation -= $1 == truthvalue_true_node;
605 $$ = build_conditional_expr ($1, $4, $7); }
608 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
609 /* Make sure first operand is calculated only once. */
610 $<ttype>2 = save_expr ($1);
611 $1 = c_common_truthvalue_conversion
612 (default_conversion ($<ttype>2));
613 skip_evaluation += $1 == truthvalue_true_node; }
615 { skip_evaluation -= $1 == truthvalue_true_node;
616 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
617 | expr_no_commas '=' expr_no_commas
619 $$ = build_modify_expr ($1, NOP_EXPR, $3);
620 class = TREE_CODE_CLASS (TREE_CODE ($$));
621 if (IS_EXPR_CODE_CLASS (class))
622 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
624 | expr_no_commas ASSIGN expr_no_commas
626 $$ = build_modify_expr ($1, $2, $3);
627 /* This inhibits warnings in
628 c_common_truthvalue_conversion. */
629 class = TREE_CODE_CLASS (TREE_CODE ($$));
630 if (IS_EXPR_CODE_CLASS (class))
631 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
638 if (yychar == YYEMPTY)
640 $$ = build_external_ref ($1, yychar == '(');
645 { $$ = fname_decl (C_RID_CODE ($$), $$); }
646 | '(' typename ')' '{'
647 { start_init (NULL_TREE, NULL, 0);
648 $2 = groktypename ($2);
649 really_start_incremental_init ($2); }
650 initlist_maybe_comma '}' %prec UNARY
651 { tree constructor = pop_init_level (0);
655 if (pedantic && ! flag_isoc99)
656 pedwarn ("ISO C89 forbids compound literals");
657 $$ = build_compound_literal (type, constructor);
660 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
661 if (IS_EXPR_CODE_CLASS (class))
662 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
665 { $$ = error_mark_node; }
666 | compstmt_primary_start compstmt_nostart ')'
667 { tree saved_last_tree;
670 pedwarn ("ISO C forbids braced-groups within expressions");
671 saved_last_tree = COMPOUND_BODY ($1);
672 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
673 last_tree = saved_last_tree;
674 TREE_CHAIN (last_tree) = NULL_TREE;
676 last_expr_type = void_type_node;
677 $$ = build1 (STMT_EXPR, last_expr_type, $1);
678 TREE_SIDE_EFFECTS ($$) = 1;
680 | compstmt_primary_start error ')'
682 last_tree = COMPOUND_BODY ($1);
683 TREE_CHAIN (last_tree) = NULL_TREE;
684 $$ = error_mark_node;
686 | primary '(' exprlist ')' %prec '.'
687 { $$ = build_function_call ($1, $3); }
688 | VA_ARG '(' expr_no_commas ',' typename ')'
689 { $$ = build_va_arg ($3, groktypename ($5)); }
691 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
697 if (TREE_CODE (c) != INTEGER_CST)
698 error ("first argument to __builtin_choose_expr not a constant");
699 $$ = integer_zerop (c) ? $7 : $5;
701 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
705 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
706 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
708 $$ = comptypes (e1, e2, COMPARE_STRICT)
709 ? build_int_2 (1, 0) : build_int_2 (0, 0);
711 | primary '[' expr ']' %prec '.'
712 { $$ = build_array_ref ($1, $3); }
713 | primary '.' identifier
716 if (!is_public ($1, $3))
717 $$ = error_mark_node;
720 $$ = build_component_ref ($1, $3);
722 | primary POINTSAT identifier
724 tree expr = build_indirect_ref ($1, "->");
727 if (!is_public (expr, $3))
728 $$ = error_mark_node;
731 $$ = build_component_ref (expr, $3);
734 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
736 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
739 { $$ = build_message_expr ($1); }
741 { $$ = build_selector_expr ($1); }
743 { $$ = build_protocol_expr ($1); }
745 { $$ = build_encode_expr ($1); }
747 { $$ = build_objc_string_object ($1); }
751 old_style_parm_decls:
752 old_style_parm_decls_1
754 parsing_iso_function_signature = false; /* Reset after decls. */
758 old_style_parm_decls_1:
761 if (warn_traditional && !in_system_header
762 && parsing_iso_function_signature)
763 warning ("traditional C rejects ISO C style function definitions");
764 if (warn_old_style_definition && !in_system_header
765 && !parsing_iso_function_signature)
766 warning ("old-style parameter declaration");
767 parsing_iso_function_signature = false; /* Reset after warning. */
771 if (warn_old_style_definition && !in_system_header)
772 warning ("old-style parameter declaration");
776 /* The following are analogous to lineno_decl, decls and decl
777 except that they do not allow nested functions.
778 They are used for old-style parm decls. */
780 save_location datadecl
787 | datadecls lineno_datadecl
788 | lineno_datadecl errstmt
791 /* We don't allow prefix attributes here because they cause reduce/reduce
792 conflicts: we can't know whether we're parsing a function decl with
793 attribute suffix, or function defn with attribute prefix on first old
796 declspecs_ts_nosa setspecs initdecls ';'
797 { POP_DECLSPEC_STACK; }
798 | declspecs_nots_nosa setspecs notype_initdecls ';'
799 { POP_DECLSPEC_STACK; }
800 | declspecs_ts_nosa ';'
801 { shadow_tag_warned ($1, 1);
802 pedwarn ("empty declaration"); }
803 | declspecs_nots_nosa ';'
804 { pedwarn ("empty declaration"); }
807 /* This combination which saves a lineno before a decl
808 is the normal thing to use, rather than decl itself.
809 This is to avoid shift/reduce conflicts in contexts
810 where statement labels are allowed. */
816 /* records the type and storage class specs to use for processing
817 the declarators that follow.
818 Maintains a stack of outer-level values of current_declspecs,
819 for the sake of parm declarations nested in function declarators. */
820 setspecs: /* empty */
821 { pending_xref_error ();
823 split_specs_attrs ($<ttype>0,
824 ¤t_declspecs, &prefix_attributes);
825 all_prefix_attributes = prefix_attributes; }
828 /* Possibly attributes after a comma, which should reset all_prefix_attributes
829 to prefix_attributes with these ones chained on the front. */
832 { all_prefix_attributes = chainon ($1, prefix_attributes); }
836 declspecs_ts setspecs initdecls ';'
837 { POP_DECLSPEC_STACK; }
838 | declspecs_nots setspecs notype_initdecls ';'
839 { POP_DECLSPEC_STACK; }
840 | declspecs_ts setspecs nested_function
841 { POP_DECLSPEC_STACK; }
842 | declspecs_nots setspecs notype_nested_function
843 { POP_DECLSPEC_STACK; }
847 { RESTORE_EXT_FLAGS ($1); }
850 /* A list of declaration specifiers. These are:
852 - Storage class specifiers (scspec), which for GCC currently includes
853 function specifiers ("inline").
855 - Type specifiers (typespec_*).
857 - Type qualifiers (TYPE_QUAL).
859 - Attribute specifier lists (attributes).
861 These are stored as a TREE_LIST; the head of the list is the last
862 item in the specifier list. Each entry in the list has either a
863 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
864 is a single other specifier or qualifier; and a TREE_CHAIN that is the
865 rest of the list. TREE_STATIC is set on the list if something other
866 than a storage class specifier or attribute has been seen; this is used
867 to warn for the obsolescent usage of storage class specifiers other than
868 at the start of the list. (Doing this properly would require function
869 specifiers to be handled separately from storage class specifiers.)
871 The various cases below are classified according to:
873 (a) Whether a storage class specifier is included or not; some
874 places in the grammar disallow storage class specifiers (_sc or _nosc).
876 (b) Whether a type specifier has been seen; after a type specifier,
877 a typedef name is an identifier to redeclare (_ts or _nots).
879 (c) Whether the list starts with an attribute; in certain places,
880 the grammar requires specifiers that don't start with an attribute
883 (d) Whether the list ends with an attribute (or a specifier such that
884 any following attribute would have been parsed as part of that specifier);
885 this avoids shift-reduce conflicts in the parsing of attributes
890 (i) Distinguish between function specifiers and storage class specifiers,
891 at least for the purpose of warnings about obsolescent usage.
893 (ii) Halve the number of productions here by eliminating the _sc/_nosc
894 distinction and instead checking where required that storage class
895 specifiers aren't present. */
897 /* Declspecs which contain at least one type specifier or typedef name.
898 (Just `const' or `volatile' is not enough.)
899 A typedef'd name following these is taken as a name to be declared.
900 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
902 declspecs_nosc_nots_nosa_noea:
904 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
905 TREE_STATIC ($$) = 1; }
906 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
907 { $$ = tree_cons (NULL_TREE, $2, $1);
908 TREE_STATIC ($$) = 1; }
909 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
910 { $$ = tree_cons (NULL_TREE, $2, $1);
911 TREE_STATIC ($$) = 1; }
914 declspecs_nosc_nots_nosa_ea:
915 declspecs_nosc_nots_nosa_noea attributes
916 { $$ = tree_cons ($2, NULL_TREE, $1);
917 TREE_STATIC ($$) = TREE_STATIC ($1); }
920 declspecs_nosc_nots_sa_noea:
921 declspecs_nosc_nots_sa_noea TYPE_QUAL
922 { $$ = tree_cons (NULL_TREE, $2, $1);
923 TREE_STATIC ($$) = 1; }
924 | declspecs_nosc_nots_sa_ea TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
929 declspecs_nosc_nots_sa_ea:
931 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
932 TREE_STATIC ($$) = 0; }
933 | declspecs_nosc_nots_sa_noea attributes
934 { $$ = tree_cons ($2, NULL_TREE, $1);
935 TREE_STATIC ($$) = TREE_STATIC ($1); }
938 declspecs_nosc_ts_nosa_noea:
940 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
941 TREE_STATIC ($$) = 1; }
942 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
943 { $$ = tree_cons (NULL_TREE, $2, $1);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_nots_nosa_noea typespec_nonattr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
957 | declspecs_nosc_nots_nosa_ea typespec_nonattr
958 { $$ = tree_cons (NULL_TREE, $2, $1);
959 TREE_STATIC ($$) = 1; }
962 declspecs_nosc_ts_nosa_ea:
964 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
965 TREE_STATIC ($$) = 1; }
966 | declspecs_nosc_ts_nosa_noea attributes
967 { $$ = tree_cons ($2, NULL_TREE, $1);
968 TREE_STATIC ($$) = TREE_STATIC ($1); }
969 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
970 { $$ = tree_cons (NULL_TREE, $2, $1);
971 TREE_STATIC ($$) = 1; }
972 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_nots_nosa_noea typespec_attr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
978 | declspecs_nosc_nots_nosa_ea typespec_attr
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
983 declspecs_nosc_ts_sa_noea:
984 declspecs_nosc_ts_sa_noea TYPE_QUAL
985 { $$ = tree_cons (NULL_TREE, $2, $1);
986 TREE_STATIC ($$) = 1; }
987 | declspecs_nosc_ts_sa_ea TYPE_QUAL
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_nots_sa_noea typespec_nonattr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
999 | declspecs_nosc_nots_sa_ea typespec_nonattr
1000 { $$ = tree_cons (NULL_TREE, $2, $1);
1001 TREE_STATIC ($$) = 1; }
1004 declspecs_nosc_ts_sa_ea:
1005 declspecs_nosc_ts_sa_noea attributes
1006 { $$ = tree_cons ($2, NULL_TREE, $1);
1007 TREE_STATIC ($$) = TREE_STATIC ($1); }
1008 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1009 { $$ = tree_cons (NULL_TREE, $2, $1);
1010 TREE_STATIC ($$) = 1; }
1011 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1014 | declspecs_nosc_nots_sa_noea typespec_attr
1015 { $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = 1; }
1017 | declspecs_nosc_nots_sa_ea typespec_attr
1018 { $$ = tree_cons (NULL_TREE, $2, $1);
1019 TREE_STATIC ($$) = 1; }
1022 declspecs_sc_nots_nosa_noea:
1024 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1025 TREE_STATIC ($$) = 0; }
1026 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1027 { $$ = tree_cons (NULL_TREE, $2, $1);
1028 TREE_STATIC ($$) = 1; }
1029 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1030 { $$ = tree_cons (NULL_TREE, $2, $1);
1031 TREE_STATIC ($$) = 1; }
1032 | declspecs_nosc_nots_nosa_noea scspec
1033 { if (extra_warnings && TREE_STATIC ($1))
1034 warning ("`%s' is not at beginning of declaration",
1035 IDENTIFIER_POINTER ($2));
1036 $$ = tree_cons (NULL_TREE, $2, $1);
1037 TREE_STATIC ($$) = TREE_STATIC ($1); }
1038 | declspecs_nosc_nots_nosa_ea scspec
1039 { if (extra_warnings && TREE_STATIC ($1))
1040 warning ("`%s' is not at beginning of declaration",
1041 IDENTIFIER_POINTER ($2));
1042 $$ = tree_cons (NULL_TREE, $2, $1);
1043 TREE_STATIC ($$) = TREE_STATIC ($1); }
1044 | declspecs_sc_nots_nosa_noea scspec
1045 { if (extra_warnings && TREE_STATIC ($1))
1046 warning ("`%s' is not at beginning of declaration",
1047 IDENTIFIER_POINTER ($2));
1048 $$ = tree_cons (NULL_TREE, $2, $1);
1049 TREE_STATIC ($$) = TREE_STATIC ($1); }
1050 | declspecs_sc_nots_nosa_ea scspec
1051 { if (extra_warnings && TREE_STATIC ($1))
1052 warning ("`%s' is not at beginning of declaration",
1053 IDENTIFIER_POINTER ($2));
1054 $$ = tree_cons (NULL_TREE, $2, $1);
1055 TREE_STATIC ($$) = TREE_STATIC ($1); }
1058 declspecs_sc_nots_nosa_ea:
1059 declspecs_sc_nots_nosa_noea attributes
1060 { $$ = tree_cons ($2, NULL_TREE, $1);
1061 TREE_STATIC ($$) = TREE_STATIC ($1); }
1064 declspecs_sc_nots_sa_noea:
1065 declspecs_sc_nots_sa_noea TYPE_QUAL
1066 { $$ = tree_cons (NULL_TREE, $2, $1);
1067 TREE_STATIC ($$) = 1; }
1068 | declspecs_sc_nots_sa_ea TYPE_QUAL
1069 { $$ = tree_cons (NULL_TREE, $2, $1);
1070 TREE_STATIC ($$) = 1; }
1071 | declspecs_nosc_nots_sa_noea scspec
1072 { if (extra_warnings && TREE_STATIC ($1))
1073 warning ("`%s' is not at beginning of declaration",
1074 IDENTIFIER_POINTER ($2));
1075 $$ = tree_cons (NULL_TREE, $2, $1);
1076 TREE_STATIC ($$) = TREE_STATIC ($1); }
1077 | declspecs_nosc_nots_sa_ea scspec
1078 { if (extra_warnings && TREE_STATIC ($1))
1079 warning ("`%s' is not at beginning of declaration",
1080 IDENTIFIER_POINTER ($2));
1081 $$ = tree_cons (NULL_TREE, $2, $1);
1082 TREE_STATIC ($$) = TREE_STATIC ($1); }
1083 | declspecs_sc_nots_sa_noea scspec
1084 { if (extra_warnings && TREE_STATIC ($1))
1085 warning ("`%s' is not at beginning of declaration",
1086 IDENTIFIER_POINTER ($2));
1087 $$ = tree_cons (NULL_TREE, $2, $1);
1088 TREE_STATIC ($$) = TREE_STATIC ($1); }
1089 | declspecs_sc_nots_sa_ea scspec
1090 { if (extra_warnings && TREE_STATIC ($1))
1091 warning ("`%s' is not at beginning of declaration",
1092 IDENTIFIER_POINTER ($2));
1093 $$ = tree_cons (NULL_TREE, $2, $1);
1094 TREE_STATIC ($$) = TREE_STATIC ($1); }
1097 declspecs_sc_nots_sa_ea:
1098 declspecs_sc_nots_sa_noea attributes
1099 { $$ = tree_cons ($2, NULL_TREE, $1);
1100 TREE_STATIC ($$) = TREE_STATIC ($1); }
1103 declspecs_sc_ts_nosa_noea:
1104 declspecs_sc_ts_nosa_noea TYPE_QUAL
1105 { $$ = tree_cons (NULL_TREE, $2, $1);
1106 TREE_STATIC ($$) = 1; }
1107 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_sc_nots_nosa_noea typespec_nonattr
1117 { $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = 1; }
1119 | declspecs_sc_nots_nosa_ea typespec_nonattr
1120 { $$ = tree_cons (NULL_TREE, $2, $1);
1121 TREE_STATIC ($$) = 1; }
1122 | declspecs_nosc_ts_nosa_noea scspec
1123 { if (extra_warnings && TREE_STATIC ($1))
1124 warning ("`%s' is not at beginning of declaration",
1125 IDENTIFIER_POINTER ($2));
1126 $$ = tree_cons (NULL_TREE, $2, $1);
1127 TREE_STATIC ($$) = TREE_STATIC ($1); }
1128 | declspecs_nosc_ts_nosa_ea scspec
1129 { if (extra_warnings && TREE_STATIC ($1))
1130 warning ("`%s' is not at beginning of declaration",
1131 IDENTIFIER_POINTER ($2));
1132 $$ = tree_cons (NULL_TREE, $2, $1);
1133 TREE_STATIC ($$) = TREE_STATIC ($1); }
1134 | declspecs_sc_ts_nosa_noea scspec
1135 { if (extra_warnings && TREE_STATIC ($1))
1136 warning ("`%s' is not at beginning of declaration",
1137 IDENTIFIER_POINTER ($2));
1138 $$ = tree_cons (NULL_TREE, $2, $1);
1139 TREE_STATIC ($$) = TREE_STATIC ($1); }
1140 | declspecs_sc_ts_nosa_ea scspec
1141 { if (extra_warnings && TREE_STATIC ($1))
1142 warning ("`%s' is not at beginning of declaration",
1143 IDENTIFIER_POINTER ($2));
1144 $$ = tree_cons (NULL_TREE, $2, $1);
1145 TREE_STATIC ($$) = TREE_STATIC ($1); }
1148 declspecs_sc_ts_nosa_ea:
1149 declspecs_sc_ts_nosa_noea attributes
1150 { $$ = tree_cons ($2, NULL_TREE, $1);
1151 TREE_STATIC ($$) = TREE_STATIC ($1); }
1152 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1153 { $$ = tree_cons (NULL_TREE, $2, $1);
1154 TREE_STATIC ($$) = 1; }
1155 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_nots_nosa_noea typespec_attr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1161 | declspecs_sc_nots_nosa_ea typespec_attr
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1166 declspecs_sc_ts_sa_noea:
1167 declspecs_sc_ts_sa_noea TYPE_QUAL
1168 { $$ = tree_cons (NULL_TREE, $2, $1);
1169 TREE_STATIC ($$) = 1; }
1170 | declspecs_sc_ts_sa_ea TYPE_QUAL
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_sc_nots_sa_noea typespec_nonattr
1180 { $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = 1; }
1182 | declspecs_sc_nots_sa_ea typespec_nonattr
1183 { $$ = tree_cons (NULL_TREE, $2, $1);
1184 TREE_STATIC ($$) = 1; }
1185 | declspecs_nosc_ts_sa_noea scspec
1186 { if (extra_warnings && TREE_STATIC ($1))
1187 warning ("`%s' is not at beginning of declaration",
1188 IDENTIFIER_POINTER ($2));
1189 $$ = tree_cons (NULL_TREE, $2, $1);
1190 TREE_STATIC ($$) = TREE_STATIC ($1); }
1191 | declspecs_nosc_ts_sa_ea scspec
1192 { if (extra_warnings && TREE_STATIC ($1))
1193 warning ("`%s' is not at beginning of declaration",
1194 IDENTIFIER_POINTER ($2));
1195 $$ = tree_cons (NULL_TREE, $2, $1);
1196 TREE_STATIC ($$) = TREE_STATIC ($1); }
1197 | declspecs_sc_ts_sa_noea scspec
1198 { if (extra_warnings && TREE_STATIC ($1))
1199 warning ("`%s' is not at beginning of declaration",
1200 IDENTIFIER_POINTER ($2));
1201 $$ = tree_cons (NULL_TREE, $2, $1);
1202 TREE_STATIC ($$) = TREE_STATIC ($1); }
1203 | declspecs_sc_ts_sa_ea scspec
1204 { if (extra_warnings && TREE_STATIC ($1))
1205 warning ("`%s' is not at beginning of declaration",
1206 IDENTIFIER_POINTER ($2));
1207 $$ = tree_cons (NULL_TREE, $2, $1);
1208 TREE_STATIC ($$) = TREE_STATIC ($1); }
1211 declspecs_sc_ts_sa_ea:
1212 declspecs_sc_ts_sa_noea attributes
1213 { $$ = tree_cons ($2, NULL_TREE, $1);
1214 TREE_STATIC ($$) = TREE_STATIC ($1); }
1215 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1216 { $$ = tree_cons (NULL_TREE, $2, $1);
1217 TREE_STATIC ($$) = 1; }
1218 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1221 | declspecs_sc_nots_sa_noea typespec_attr
1222 { $$ = tree_cons (NULL_TREE, $2, $1);
1223 TREE_STATIC ($$) = 1; }
1224 | declspecs_sc_nots_sa_ea typespec_attr
1225 { $$ = tree_cons (NULL_TREE, $2, $1);
1226 TREE_STATIC ($$) = 1; }
1229 /* Particular useful classes of declspecs. */
1231 declspecs_nosc_ts_nosa_noea
1232 | declspecs_nosc_ts_nosa_ea
1233 | declspecs_nosc_ts_sa_noea
1234 | declspecs_nosc_ts_sa_ea
1235 | declspecs_sc_ts_nosa_noea
1236 | declspecs_sc_ts_nosa_ea
1237 | declspecs_sc_ts_sa_noea
1238 | declspecs_sc_ts_sa_ea
1242 declspecs_nosc_nots_nosa_noea
1243 | declspecs_nosc_nots_nosa_ea
1244 | declspecs_nosc_nots_sa_noea
1245 | declspecs_nosc_nots_sa_ea
1246 | declspecs_sc_nots_nosa_noea
1247 | declspecs_sc_nots_nosa_ea
1248 | declspecs_sc_nots_sa_noea
1249 | declspecs_sc_nots_sa_ea
1253 declspecs_nosc_ts_nosa_noea
1254 | declspecs_nosc_ts_nosa_ea
1255 | declspecs_sc_ts_nosa_noea
1256 | declspecs_sc_ts_nosa_ea
1259 declspecs_nots_nosa:
1260 declspecs_nosc_nots_nosa_noea
1261 | declspecs_nosc_nots_nosa_ea
1262 | declspecs_sc_nots_nosa_noea
1263 | declspecs_sc_nots_nosa_ea
1267 declspecs_nosc_ts_nosa_noea
1268 | declspecs_nosc_ts_nosa_ea
1269 | declspecs_nosc_ts_sa_noea
1270 | declspecs_nosc_ts_sa_ea
1273 declspecs_nosc_nots:
1274 declspecs_nosc_nots_nosa_noea
1275 | declspecs_nosc_nots_nosa_ea
1276 | declspecs_nosc_nots_sa_noea
1277 | declspecs_nosc_nots_sa_ea
1281 declspecs_nosc_ts_nosa_noea
1282 | declspecs_nosc_ts_nosa_ea
1283 | declspecs_nosc_ts_sa_noea
1284 | declspecs_nosc_ts_sa_ea
1285 | declspecs_nosc_nots_nosa_noea
1286 | declspecs_nosc_nots_nosa_ea
1287 | declspecs_nosc_nots_sa_noea
1288 | declspecs_nosc_nots_sa_ea
1292 declspecs_nosc_nots_nosa_noea
1293 | declspecs_nosc_nots_nosa_ea
1294 | declspecs_nosc_nots_sa_noea
1295 | declspecs_nosc_nots_sa_ea
1296 | declspecs_nosc_ts_nosa_noea
1297 | declspecs_nosc_ts_nosa_ea
1298 | declspecs_nosc_ts_sa_noea
1299 | declspecs_nosc_ts_sa_ea
1300 | declspecs_sc_nots_nosa_noea
1301 | declspecs_sc_nots_nosa_ea
1302 | declspecs_sc_nots_sa_noea
1303 | declspecs_sc_nots_sa_ea
1304 | declspecs_sc_ts_nosa_noea
1305 | declspecs_sc_ts_nosa_ea
1306 | declspecs_sc_ts_sa_noea
1307 | declspecs_sc_ts_sa_ea
1310 /* A (possibly empty) sequence of type qualifiers and attributes. */
1311 maybe_type_quals_attrs:
1314 | declspecs_nosc_nots
1318 /* A type specifier (but not a type qualifier).
1319 Once we have seen one of these in a declaration,
1320 if a typedef name appears then it is being redeclared.
1322 The _reserved versions start with a reserved word and may appear anywhere
1323 in the declaration specifiers; the _nonreserved versions may only
1324 appear before any other type specifiers, and after that are (if names)
1327 FIXME: should the _nonreserved version be restricted to names being
1328 redeclared only? The other entries there relate only the GNU extensions
1329 and Objective C, and are historically parsed thus, and don't make sense
1330 after other type specifiers, but it might be cleaner to count them as
1333 _attr means: specifiers that either end with attributes,
1334 or are such that any following attributes would
1335 be parsed as part of the specifier.
1337 _nonattr: specifiers. */
1340 typespec_reserved_nonattr
1341 | typespec_nonreserved_nonattr
1345 typespec_reserved_attr
1348 typespec_reserved_nonattr:
1350 { OBJC_NEED_RAW_IDENTIFIER (1); }
1354 typespec_reserved_attr:
1358 typespec_nonreserved_nonattr:
1360 { /* For a typedef name, record the meaning, not the name.
1361 In case of `foo foo, bar;'. */
1362 $$ = lookup_name ($1); }
1364 | CLASSNAME protocolrefs
1365 { $$ = get_static_reference ($1, $2); }
1366 | OBJECTNAME protocolrefs
1367 { $$ = get_object_reference ($2); }
1369 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1370 - nisse@lysator.liu.se */
1371 | non_empty_protocolrefs
1372 { $$ = get_object_reference ($1); }
1374 | typeof '(' expr ')'
1375 { skip_evaluation--;
1376 if (TREE_CODE ($3) == COMPONENT_REF
1377 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1378 error ("`typeof' applied to a bit-field");
1379 $$ = TREE_TYPE ($3); }
1380 | typeof '(' typename ')'
1381 { skip_evaluation--; $$ = groktypename ($3); }
1384 /* typespec_nonreserved_attr does not exist. */
1388 | initdecls ',' maybe_resetattrs initdcl
1393 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1399 | ASM_KEYWORD '(' STRING ')'
1404 declarator maybeasm maybe_attribute '='
1405 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1406 chainon ($3, all_prefix_attributes));
1407 start_init ($<ttype>$, $2, global_bindings_p ()); }
1409 /* Note how the declaration of the variable is in effect while its init is parsed! */
1411 finish_decl ($<ttype>5, $6, $2); }
1412 | declarator maybeasm maybe_attribute
1413 { tree d = start_decl ($1, current_declspecs, 0,
1414 chainon ($3, all_prefix_attributes));
1415 finish_decl (d, NULL_TREE, $2);
1420 notype_declarator maybeasm maybe_attribute '='
1421 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1422 chainon ($3, all_prefix_attributes));
1423 start_init ($<ttype>$, $2, global_bindings_p ()); }
1425 /* Note how the declaration of the variable is in effect while its init is parsed! */
1427 finish_decl ($<ttype>5, $6, $2); }
1428 | notype_declarator maybeasm maybe_attribute
1429 { tree d = start_decl ($1, current_declspecs, 0,
1430 chainon ($3, all_prefix_attributes));
1431 finish_decl (d, NULL_TREE, $2); }
1433 /* the * rules are dummies to accept the Apollo extended syntax
1434 so that the header files compile. */
1445 | attributes attribute
1446 { $$ = chainon ($1, $2); }
1450 ATTRIBUTE '(' '(' attribute_list ')' ')'
1457 | attribute_list ',' attrib
1458 { $$ = chainon ($1, $3); }
1465 { $$ = build_tree_list ($1, NULL_TREE); }
1466 | any_word '(' IDENTIFIER ')'
1467 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1468 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1469 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1470 | any_word '(' exprlist ')'
1471 { $$ = build_tree_list ($1, $3); }
1474 /* This still leaves out most reserved keywords,
1475 shouldn't we include them? */
1489 /* Initializers. `init' is the entry point. */
1494 { really_start_incremental_init (NULL_TREE); }
1495 initlist_maybe_comma '}'
1496 { $$ = pop_init_level (0); }
1498 { $$ = error_mark_node; }
1501 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1502 initlist_maybe_comma:
1505 pedwarn ("ISO C forbids empty initializer braces"); }
1506 | initlist1 maybecomma
1511 | initlist1 ',' initelt
1514 /* `initelt' is a single element of an initializer.
1515 It may use braces. */
1517 designator_list '=' initval
1518 { if (pedantic && ! flag_isoc99)
1519 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1520 | designator initval
1522 pedwarn ("obsolete use of designated initializer without `='"); }
1524 { set_init_label ($1);
1526 pedwarn ("obsolete use of designated initializer with `:'"); }
1534 { push_init_level (0); }
1535 initlist_maybe_comma '}'
1536 { process_init_element (pop_init_level (0)); }
1538 { process_init_element ($1); }
1544 | designator_list designator
1549 { set_init_label ($2); }
1550 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1551 { set_init_index ($2, $4);
1553 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1554 | '[' expr_no_commas ']'
1555 { set_init_index ($2, NULL_TREE); }
1561 pedwarn ("ISO C forbids nested functions");
1563 push_function_context ();
1564 if (! start_function (current_declspecs, $1,
1565 all_prefix_attributes))
1567 pop_function_context ();
1570 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1572 old_style_parm_decls save_location
1573 { tree decl = current_function_decl;
1574 DECL_SOURCE_LOCATION (decl) = $4;
1575 store_parm_decls (); }
1576 /* This used to use compstmt_or_error.
1577 That caused a bug with input `f(g) int g {}',
1578 where the use of YYERROR1 above caused an error
1579 which then was handled by compstmt_or_error.
1580 There followed a repeated execution of that same rule,
1581 which called YYERROR1 again, and so on. */
1583 { tree decl = current_function_decl;
1585 pop_function_context ();
1586 add_decl_stmt (decl); }
1589 notype_nested_function:
1592 pedwarn ("ISO C forbids nested functions");
1594 push_function_context ();
1595 if (! start_function (current_declspecs, $1,
1596 all_prefix_attributes))
1598 pop_function_context ();
1601 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1603 old_style_parm_decls save_location
1604 { tree decl = current_function_decl;
1605 DECL_SOURCE_LOCATION (decl) = $4;
1606 store_parm_decls (); }
1607 /* This used to use compstmt_or_error.
1608 That caused a bug with input `f(g) int g {}',
1609 where the use of YYERROR1 above caused an error
1610 which then was handled by compstmt_or_error.
1611 There followed a repeated execution of that same rule,
1612 which called YYERROR1 again, and so on. */
1614 { tree decl = current_function_decl;
1616 pop_function_context ();
1617 add_decl_stmt (decl); }
1620 /* Any kind of declarator (thus, all declarators allowed
1621 after an explicit typespec). */
1624 after_type_declarator
1628 /* A declarator that is allowed only after an explicit typespec. */
1630 after_type_declarator:
1631 '(' maybe_attribute after_type_declarator ')'
1632 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1633 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1634 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1635 /* | after_type_declarator '(' error ')' %prec '.'
1636 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1637 poplevel (0, 0, 0); } */
1638 | after_type_declarator array_declarator %prec '.'
1639 { $$ = set_array_declarator_type ($2, $1, 0); }
1640 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1641 { $$ = make_pointer_declarator ($2, $3); }
1648 /* Kinds of declarator that can appear in a parameter list
1649 in addition to notype_declarator. This is like after_type_declarator
1650 but does not allow a typedef name in parentheses as an identifier
1651 (because it would conflict with a function with that typedef as arg). */
1653 parm_declarator_starttypename
1654 | parm_declarator_nostarttypename
1657 parm_declarator_starttypename:
1658 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1659 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1660 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1661 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1662 poplevel (0, 0, 0); } */
1663 | parm_declarator_starttypename array_declarator %prec '.'
1664 { $$ = set_array_declarator_type ($2, $1, 0); }
1671 parm_declarator_nostarttypename:
1672 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1673 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1674 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1675 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1676 poplevel (0, 0, 0); } */
1677 | parm_declarator_nostarttypename array_declarator %prec '.'
1678 { $$ = set_array_declarator_type ($2, $1, 0); }
1679 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1680 { $$ = make_pointer_declarator ($2, $3); }
1681 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1682 { $$ = make_pointer_declarator ($2, $3); }
1683 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1684 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1687 /* A declarator allowed whether or not there has been
1688 an explicit typespec. These cannot redeclare a typedef-name. */
1691 notype_declarator '(' parmlist_or_identifiers %prec '.'
1692 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1693 /* | notype_declarator '(' error ')' %prec '.'
1694 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1695 poplevel (0, 0, 0); } */
1696 | '(' maybe_attribute notype_declarator ')'
1697 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1698 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1699 { $$ = make_pointer_declarator ($2, $3); }
1700 | notype_declarator array_declarator %prec '.'
1701 { $$ = set_array_declarator_type ($2, $1, 0); }
1726 /* structsp_attr: struct/union/enum specifiers that either
1727 end with attributes, or are such that any following attributes would
1728 be parsed as part of the struct/union/enum specifier.
1730 structsp_nonattr: other struct/union/enum specifiers. */
1733 struct_head identifier '{'
1734 { $$ = start_struct (RECORD_TYPE, $2);
1735 /* Start scope of tag before parsing components. */
1737 component_decl_list '}' maybe_attribute
1738 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1739 chainon ($1, $7)); }
1740 | struct_head '{' component_decl_list '}' maybe_attribute
1741 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1742 nreverse ($3), chainon ($1, $5));
1744 | union_head identifier '{'
1745 { $$ = start_struct (UNION_TYPE, $2); }
1746 component_decl_list '}' maybe_attribute
1747 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1748 chainon ($1, $7)); }
1749 | union_head '{' component_decl_list '}' maybe_attribute
1750 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1751 nreverse ($3), chainon ($1, $5));
1753 | enum_head identifier '{'
1754 { $$ = start_enum ($2); }
1755 enumlist maybecomma_warn '}' maybe_attribute
1756 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1757 chainon ($1, $8)); }
1759 { $$ = start_enum (NULL_TREE); }
1760 enumlist maybecomma_warn '}' maybe_attribute
1761 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1762 chainon ($1, $7)); }
1766 struct_head identifier
1767 { $$ = xref_tag (RECORD_TYPE, $2); }
1768 | union_head identifier
1769 { $$ = xref_tag (UNION_TYPE, $2); }
1770 | enum_head identifier
1771 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1772 /* In ISO C, enumerated types can be referred to
1773 only if already defined. */
1774 if (pedantic && !COMPLETE_TYPE_P ($$))
1775 pedwarn ("ISO C forbids forward references to `enum' types"); }
1786 { if (pedantic && ! flag_isoc99)
1787 pedwarn ("comma at end of enumerator list"); }
1790 /* We chain the components in reverse order. They are put in forward
1791 order in structsp_attr.
1793 Note that component_declarator returns single decls, so components
1794 and components_notype can use TREE_CHAIN directly, wheras components
1795 and components_notype return lists (of comma separated decls), so
1796 component_decl_list and component_decl_list2 must use chainon.
1798 The theory behind all this is that there will be more semicolon
1799 separated fields than comma separated fields, and so we'll be
1800 minimizing the number of node traversals required by chainon. */
1802 component_decl_list:
1803 component_decl_list2
1805 | component_decl_list2 component_decl
1806 { $$ = chainon ($2, $1);
1807 pedwarn ("no semicolon at end of struct or union"); }
1810 component_decl_list2: /* empty */
1812 | component_decl_list2 component_decl ';'
1813 { $$ = chainon ($2, $1); }
1814 | component_decl_list2 ';'
1816 pedwarn ("extra semicolon in struct or union specified"); }
1818 /* foo(sizeof(struct{ @defs(ClassName)})); */
1819 | DEFS '(' CLASSNAME ')'
1820 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1825 declspecs_nosc_ts setspecs components
1827 POP_DECLSPEC_STACK; }
1828 | declspecs_nosc_ts setspecs
1830 /* Support for unnamed structs or unions as members of
1831 structs or unions (which is [a] useful and [b] supports
1834 pedwarn ("ISO C doesn't support unnamed structs/unions");
1836 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1837 POP_DECLSPEC_STACK; }
1838 | declspecs_nosc_nots setspecs components_notype
1840 POP_DECLSPEC_STACK; }
1841 | declspecs_nosc_nots
1843 pedwarn ("ISO C forbids member declarations with no members");
1844 shadow_tag_warned ($1, pedantic);
1848 | extension component_decl
1850 RESTORE_EXT_FLAGS ($1); }
1854 component_declarator
1855 | components ',' maybe_resetattrs component_declarator
1856 { TREE_CHAIN ($4) = $1; $$ = $4; }
1860 component_notype_declarator
1861 | components_notype ',' maybe_resetattrs component_notype_declarator
1862 { TREE_CHAIN ($4) = $1; $$ = $4; }
1865 component_declarator:
1866 declarator maybe_attribute
1867 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1868 decl_attributes (&$$,
1869 chainon ($2, all_prefix_attributes), 0); }
1870 | 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 component_notype_declarator:
1881 notype_declarator maybe_attribute
1882 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1883 decl_attributes (&$$,
1884 chainon ($2, all_prefix_attributes), 0); }
1885 | notype_declarator ':' expr_no_commas maybe_attribute
1886 { $$ = grokfield ($1, current_declspecs, $3);
1887 decl_attributes (&$$,
1888 chainon ($4, all_prefix_attributes), 0); }
1889 | ':' expr_no_commas maybe_attribute
1890 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1891 decl_attributes (&$$,
1892 chainon ($3, all_prefix_attributes), 0); }
1895 /* We chain the enumerators in reverse order.
1896 They are put in forward order in structsp_attr. */
1900 | enumlist ',' enumerator
1901 { if ($1 == error_mark_node)
1904 TREE_CHAIN ($3) = $1, $$ = $3; }
1906 { $$ = error_mark_node; }
1912 { $$ = build_enumerator ($1, NULL_TREE); }
1913 | identifier '=' expr_no_commas
1914 { $$ = build_enumerator ($1, $3); }
1919 { pending_xref_error ();
1922 { $$ = build_tree_list ($<ttype>2, $3); }
1925 absdcl: /* an absolute declarator */
1931 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1933 { $$ = build_tree_list (build_tree_list (current_declspecs,
1935 all_prefix_attributes); }
1937 { $$ = build_tree_list (build_tree_list (current_declspecs,
1939 all_prefix_attributes); }
1940 | absdcl1_noea attributes
1941 { $$ = build_tree_list (build_tree_list (current_declspecs,
1943 chainon ($2, all_prefix_attributes)); }
1946 absdcl1: /* a nonempty absolute declarator */
1953 | '*' maybe_type_quals_attrs absdcl1_noea
1954 { $$ = make_pointer_declarator ($2, $3); }
1958 '*' maybe_type_quals_attrs
1959 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1960 | '*' maybe_type_quals_attrs absdcl1_ea
1961 { $$ = make_pointer_declarator ($2, $3); }
1965 '(' maybe_attribute absdcl1 ')'
1966 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1967 | direct_absdcl1 '(' parmlist
1968 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1969 | direct_absdcl1 array_declarator
1970 { $$ = set_array_declarator_type ($2, $1, 1); }
1972 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1974 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1977 /* The [...] part of a declarator for an array type. */
1980 '[' maybe_type_quals_attrs expr_no_commas ']'
1981 { $$ = build_array_declarator ($3, $2, 0, 0); }
1982 | '[' maybe_type_quals_attrs ']'
1983 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1984 | '[' maybe_type_quals_attrs '*' ']'
1985 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1986 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1987 { $$ = build_array_declarator ($4, $3, 1, 0); }
1988 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1989 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1990 { $$ = build_array_declarator ($4, $2, 1, 0); }
1993 /* A nonempty series of declarations and statements (possibly followed by
1994 some labels) that can form the body of a compound statement.
1995 NOTE: we don't allow labels on declarations; this might seem like a
1996 natural extension, but there would be a conflict between attributes
1997 on the label and prefix attributes on the declaration. */
2000 lineno_stmt_decl_or_labels_ending_stmt
2001 | lineno_stmt_decl_or_labels_ending_decl
2002 | lineno_stmt_decl_or_labels_ending_label
2004 pedwarn ("deprecated use of label at end of compound statement");
2006 | lineno_stmt_decl_or_labels_ending_error
2009 lineno_stmt_decl_or_labels_ending_stmt:
2011 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2012 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2013 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2014 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2017 lineno_stmt_decl_or_labels_ending_decl:
2019 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2021 if ((pedantic && !flag_isoc99)
2022 || warn_declaration_after_statement)
2023 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2025 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2026 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2029 lineno_stmt_decl_or_labels_ending_label:
2031 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2032 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2033 | lineno_stmt_decl_or_labels_ending_label lineno_label
2034 | lineno_stmt_decl_or_labels_ending_error lineno_label
2037 lineno_stmt_decl_or_labels_ending_error:
2039 | lineno_stmt_decl_or_labels errstmt
2042 lineno_stmt_decl_or_labels:
2043 lineno_stmt_decl_or_labels_ending_stmt
2044 | lineno_stmt_decl_or_labels_ending_decl
2045 | lineno_stmt_decl_or_labels_ending_label
2046 | lineno_stmt_decl_or_labels_ending_error
2052 pushlevel: /* empty */
2055 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2059 poplevel: /* empty */
2062 if (c_dialect_objc ())
2063 objc_clear_super_receiver ();
2065 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2069 /* Start and end blocks created for the new scopes of C99. */
2070 c99_block_start: /* empty */
2073 $$ = c_begin_compound_stmt ();
2076 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2083 /* Productions using c99_block_start and c99_block_end will need to do what's
2084 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2085 $1 is the value of c99_block_start and $2 of c99_block_end. */
2086 c99_block_end: /* empty */
2089 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2090 $$ = poplevel (KEEP_MAYBE, 0, 0);
2091 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2092 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2099 /* Read zero or more forward-declarations for labels
2100 that nested functions can jump to. */
2105 pedwarn ("ISO C forbids label declarations"); }
2110 | label_decls label_decl
2114 LABEL identifiers_or_typenames ';'
2116 for (link = $2; link; link = TREE_CHAIN (link))
2118 tree label = declare_label (TREE_VALUE (link));
2119 C_DECLARED_LABEL_FLAG (label) = 1;
2120 add_decl_stmt (label);
2125 /* This is the body of a function definition.
2126 It causes syntax errors to ignore to the next openbrace. */
2133 compstmt_start: '{' { compstmt_count++;
2134 $$ = c_begin_compound_stmt (); }
2137 compstmt_nostart: '}'
2138 { $$ = convert (void_type_node, integer_zero_node); }
2139 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2140 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2141 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2142 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2146 compstmt_contents_nonempty:
2151 compstmt_primary_start:
2153 { if (current_function_decl == 0)
2155 error ("braced-group within expression allowed only inside a function");
2158 /* We must force a BLOCK for this level
2159 so that, if it is not expanded later,
2160 there is a way to turn off the entire subtree of blocks
2161 that are contained in it. */
2164 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2168 compstmt: compstmt_start compstmt_nostart
2169 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2170 last_expr_type = NULL_TREE;
2174 /* Value is number of statements counted as of the closeparen. */
2176 if_prefix c99_block_lineno_labeled_stmt
2177 { c_finish_then (); }
2178 /* Make sure c_expand_end_cond is run once
2179 for each call to c_expand_start_cond.
2180 Otherwise a crash is likely. */
2185 /* We must build the IF_STMT node before parsing its
2186 condition so that STMT_LINENO refers to the line
2187 containing the "if", and not the line containing
2188 the close-parenthesis.
2190 c_begin_if_stmt returns the IF_STMT node, which
2191 we later pass to c_expand_start_cond to fill
2192 in the condition and other tidbits. */
2194 { $<ttype>$ = c_begin_if_stmt (); }
2196 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2197 compstmt_count,$<ttype>2);
2198 $<itype>$ = stmt_count;
2199 if_stmt_locus = $<location>-1; }
2202 /* This is a subroutine of stmt.
2203 It is used twice, once for valid DO statements
2204 and once for catching errors in parsing the end test. */
2209 c_in_iteration_stmt++;
2211 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2213 /* In the event that a parse error prevents
2214 parsing the complete do-statement, set the
2215 condition now. Otherwise, we can get crashes at
2216 RTL-generation time. */
2217 DO_COND ($<ttype>$) = error_mark_node; }
2218 c99_block_lineno_labeled_stmt WHILE
2220 RECHAIN_STMTS ($$, DO_BODY ($$));
2221 c_in_iteration_stmt--; }
2224 /* The forced readahead in here is because we might be at the end of a
2225 line, and the line and file won't be bumped until yylex absorbs the
2226 first token on the next line. */
2229 { if (yychar == YYEMPTY)
2231 $$ = input_location; }
2234 lineno_labeled_stmt:
2236 | lineno_label lineno_labeled_stmt
2239 /* Like lineno_labeled_stmt, but a block in C99. */
2240 c99_block_lineno_labeled_stmt:
2241 c99_block_start lineno_labeled_stmt c99_block_end
2243 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2250 STMT_LINENO ($2) = $1.line;
2251 /* ??? We currently have no way of recording
2252 the filename for a statement. This probably
2253 matters little in practice at the moment,
2254 but I suspect that problems will occur when
2255 doing inlining at the tree level. */
2264 STMT_LINENO ($2) = $1.line;
2269 select_or_iter_stmt:
2271 { c_expand_start_else ();
2272 $<itype>1 = stmt_count; }
2273 c99_block_lineno_labeled_stmt
2275 c_expand_end_cond ();
2276 if (extra_warnings && stmt_count == $<itype>1)
2277 warning ("empty body in an else-statement"); }
2278 | simple_if %prec IF
2279 { c_expand_end_cond ();
2280 /* This warning is here instead of in simple_if, because we
2281 do not want a warning if an empty if is followed by an
2282 else statement. Increment stmt_count so we don't
2283 give a second error if this is a nested `if'. */
2284 if (extra_warnings && stmt_count++ == $<itype>1)
2285 warning ("%Hempty body in an if-statement",
2287 /* Make sure c_expand_end_cond is run once
2288 for each call to c_expand_start_cond.
2289 Otherwise a crash is likely. */
2290 | simple_if ELSE error
2291 { c_expand_end_cond (); }
2292 /* We must build the WHILE_STMT node before parsing its
2293 condition so that STMT_LINENO refers to the line
2294 containing the "while", and not the line containing
2295 the close-parenthesis.
2297 c_begin_while_stmt returns the WHILE_STMT node, which
2298 we later pass to c_finish_while_stmt_cond to fill
2299 in the condition and other tidbits. */
2302 $<ttype>$ = c_begin_while_stmt (); }
2304 { c_in_iteration_stmt++;
2305 $4 = c_common_truthvalue_conversion ($4);
2306 c_finish_while_stmt_cond
2307 (c_common_truthvalue_conversion ($4), $<ttype>2);
2308 $<ttype>$ = add_stmt ($<ttype>2); }
2309 c99_block_lineno_labeled_stmt
2310 { c_in_iteration_stmt--;
2311 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2314 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2315 | do_stmt_start error
2318 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2319 NULL_TREE, NULL_TREE);
2320 add_stmt ($<ttype>$); }
2323 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2326 FOR_COND ($<ttype>2)
2327 = c_common_truthvalue_conversion ($6); }
2329 { c_in_iteration_stmt++;
2330 FOR_EXPR ($<ttype>2) = $9; }
2331 c99_block_lineno_labeled_stmt
2332 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2333 c_in_iteration_stmt--;}
2334 | SWITCH '(' expr ')'
2336 $<ttype>$ = c_start_case ($3);
2338 c99_block_lineno_labeled_stmt
2345 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2347 { check_for_loop_decls (); }
2350 /* Parse a single real statement, not including any labels. */
2353 { stmt_count++; $$ = $1; }
2356 $$ = c_expand_expr_stmt ($1); }
2357 | c99_block_start select_or_iter_stmt c99_block_end
2359 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2363 if (!(c_in_iteration_stmt || c_in_case_stmt))
2365 error ("break statement not within loop or switch");
2369 $$ = add_stmt (build_break_stmt ()); }
2372 if (!c_in_iteration_stmt)
2374 error ("continue statement not within a loop");
2378 $$ = add_stmt (build_continue_stmt ()); }
2381 $$ = c_expand_return (NULL_TREE); }
2384 $$ = c_expand_return ($2); }
2385 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2387 $$ = simple_asm_stmt ($4); }
2388 /* This is the case with just output operands. */
2389 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2391 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2392 /* This is the case with input operands as well. */
2393 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2394 asm_operands ')' ';'
2396 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2397 /* This is the case with clobbered registers as well. */
2398 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2399 asm_operands ':' asm_clobbers ')' ';'
2401 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2402 | GOTO identifier ';'
2405 decl = lookup_label ($2);
2408 TREE_USED (decl) = 1;
2409 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2416 pedwarn ("ISO C forbids `goto *expr;'");
2418 $3 = convert (ptr_type_node, $3);
2419 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2425 $$ = objc_build_throw_stmt ($2);
2429 $$ = objc_build_throw_stmt (NULL_TREE);
2431 | objc_try_catch_stmt
2432 { objc_build_finally_prologue (); }
2434 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2435 | AT_SYNCHRONIZED '(' expr ')'
2436 { objc_build_synchronized_prologue ($3); }
2438 { $$ = objc_build_synchronized_epilogue (); }
2441 objc_try_catch_stmt:
2443 { objc_build_try_epilogue (1); }
2445 { objc_build_catch_epilogue (); $$ = 1; }
2447 { objc_build_try_epilogue (0); $$ = 0; }
2453 { objc_build_try_prologue (); }
2458 objc_catch_list objc_catch_block
2463 AT_CATCH '(' parm ')'
2464 { objc_build_catch_stmt ($3); }
2477 /* Any kind of label, including jump labels and case labels.
2478 ANSI C accepts labels only before statements, but we allow them
2479 also at the end of a compound statement. */
2481 label: CASE expr_no_commas ':'
2483 $$ = do_case ($2, NULL_TREE); }
2484 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2486 $$ = do_case ($2, $4); }
2489 $$ = do_case (NULL_TREE, NULL_TREE); }
2490 | identifier save_location ':' maybe_attribute
2491 { tree label = define_label ($2, $1);
2495 decl_attributes (&label, $4, 0);
2496 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2503 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2507 { emit_line_note (input_location);
2510 { emit_line_note (input_location); }
2519 /* These are the operands other than the first string and colon
2520 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2521 asm_operands: /* empty */
2523 | nonnull_asm_operands
2526 nonnull_asm_operands:
2528 | nonnull_asm_operands ',' asm_operand
2529 { $$ = chainon ($1, $3); }
2534 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2535 | '[' identifier ']' STRING '(' expr ')'
2536 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2537 IDENTIFIER_POINTER ($2));
2538 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2543 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2544 | asm_clobbers ',' STRING
2545 { $$ = tree_cons (NULL_TREE, $3, $1); }
2548 /* This is what appears inside the parens in a function declarator.
2549 Its value is a list of ..._TYPE nodes. Attributes must appear here
2550 to avoid a conflict with their appearance after an open parenthesis
2551 in an abstract declarator, as in
2552 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2556 declare_parm_level (); }
2559 poplevel (0, 0, 0); }
2565 { mark_forward_parm_decls (); }
2567 { /* Dummy action so attributes are in known place
2568 on parser stack. */ }
2572 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2575 /* This is what appears inside the parens in a function declarator.
2576 Is value is represented in the format that grokdeclarator expects. */
2577 parmlist_2: /* empty */
2578 { $$ = get_parm_info (0); }
2580 { $$ = get_parm_info (0);
2581 /* Gcc used to allow this as an extension. However, it does
2582 not work for all targets, and thus has been disabled.
2583 Also, since func (...) and func () are indistinguishable,
2584 it caused problems with the code in expand_builtin which
2585 tries to verify that BUILT_IN_NEXT_ARG is being used
2587 error ("ISO C requires a named argument before `...'");
2588 parsing_iso_function_signature = true;
2591 { $$ = get_parm_info (1);
2592 parsing_iso_function_signature = true;
2594 | parms ',' ELLIPSIS
2595 { $$ = get_parm_info (0);
2596 parsing_iso_function_signature = true;
2602 { push_parm_decl ($1); }
2604 { push_parm_decl ($3); }
2607 /* A single parameter declaration or parameter type name,
2608 as found in a parmlist. */
2610 declspecs_ts setspecs parm_declarator maybe_attribute
2611 { $$ = build_tree_list (build_tree_list (current_declspecs,
2613 chainon ($4, all_prefix_attributes));
2614 POP_DECLSPEC_STACK; }
2615 | declspecs_ts setspecs notype_declarator maybe_attribute
2616 { $$ = build_tree_list (build_tree_list (current_declspecs,
2618 chainon ($4, all_prefix_attributes));
2619 POP_DECLSPEC_STACK; }
2620 | declspecs_ts setspecs absdcl_maybe_attribute
2622 POP_DECLSPEC_STACK; }
2623 | declspecs_nots setspecs notype_declarator maybe_attribute
2624 { $$ = build_tree_list (build_tree_list (current_declspecs,
2626 chainon ($4, all_prefix_attributes));
2627 POP_DECLSPEC_STACK; }
2629 | declspecs_nots setspecs absdcl_maybe_attribute
2631 POP_DECLSPEC_STACK; }
2634 /* The first parm, which must suck attributes from off the top of the parser
2637 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2638 { $$ = build_tree_list (build_tree_list (current_declspecs,
2640 chainon ($4, all_prefix_attributes));
2641 POP_DECLSPEC_STACK; }
2642 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2643 { $$ = build_tree_list (build_tree_list (current_declspecs,
2645 chainon ($4, all_prefix_attributes));
2646 POP_DECLSPEC_STACK; }
2647 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2649 POP_DECLSPEC_STACK; }
2650 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2651 { $$ = build_tree_list (build_tree_list (current_declspecs,
2653 chainon ($4, all_prefix_attributes));
2654 POP_DECLSPEC_STACK; }
2656 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2658 POP_DECLSPEC_STACK; }
2663 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2664 all_prefix_attributes = prefix_attributes; }
2667 /* This is used in a function definition
2668 where either a parmlist or an identifier list is ok.
2669 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2670 parmlist_or_identifiers:
2673 declare_parm_level (); }
2674 parmlist_or_identifiers_1
2676 poplevel (0, 0, 0); }
2679 parmlist_or_identifiers_1:
2683 for (t = $1; t; t = TREE_CHAIN (t))
2684 if (TREE_VALUE (t) == NULL_TREE)
2685 error ("`...' in old-style identifier list");
2686 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2688 /* Make sure we have a parmlist after attributes. */
2690 && (TREE_CODE ($$) != TREE_LIST
2691 || TREE_PURPOSE ($$) == 0
2692 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2697 /* A nonempty list of identifiers. */
2700 { $$ = build_tree_list (NULL_TREE, $1); }
2701 | identifiers ',' IDENTIFIER
2702 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2705 /* A nonempty list of identifiers, including typenames. */
2706 identifiers_or_typenames:
2708 { $$ = build_tree_list (NULL_TREE, $1); }
2709 | identifiers_or_typenames ',' identifier
2710 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2715 { $$ = SAVE_EXT_FLAGS();
2717 warn_pointer_arith = 0;
2718 warn_traditional = 0;
2723 /* Objective-C productions. */
2733 if (objc_implementation_context)
2735 finish_class (objc_implementation_context);
2736 objc_ivar_chain = NULL_TREE;
2737 objc_implementation_context = NULL_TREE;
2740 warning ("`@end' must appear in an implementation context");
2744 /* A nonempty list of identifiers. */
2747 { $$ = build_tree_list (NULL_TREE, $1); }
2748 | identifier_list ',' identifier
2749 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2753 CLASS identifier_list ';'
2755 objc_declare_class ($2);
2760 ALIAS identifier identifier ';'
2762 objc_declare_alias ($2, $3);
2767 ':' identifier { $$ = $2; }
2768 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2772 '{' ivar_decl_list '}'
2777 INTERFACE identifier superclass protocolrefs
2779 objc_interface_context = objc_ivar_context
2780 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2781 objc_public_flag = 0;
2785 continue_class (objc_interface_context);
2789 finish_class (objc_interface_context);
2790 objc_interface_context = NULL_TREE;
2793 | IMPLEMENTATION identifier superclass
2795 objc_implementation_context = objc_ivar_context
2796 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2797 objc_public_flag = 0;
2802 = continue_class (objc_implementation_context);
2805 | INTERFACE identifier '(' identifier ')' protocolrefs
2807 objc_interface_context
2808 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2809 continue_class (objc_interface_context);
2813 finish_class (objc_interface_context);
2814 objc_interface_context = NULL_TREE;
2817 | IMPLEMENTATION identifier '(' identifier ')'
2819 objc_implementation_context
2820 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2822 = continue_class (objc_implementation_context);
2827 PROTOCOL identifier protocolrefs
2829 objc_pq_context = 1;
2830 objc_interface_context
2831 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2835 objc_pq_context = 0;
2836 finish_protocol(objc_interface_context);
2837 objc_interface_context = NULL_TREE;
2839 /* The @protocol forward-declaration production introduces a
2840 reduce/reduce conflict on ';', which should be resolved in
2841 favor of the production 'identifier_list -> identifier'. */
2842 | PROTOCOL identifier_list ';'
2844 objc_declare_protocols ($2);
2853 | non_empty_protocolrefs
2856 non_empty_protocolrefs:
2857 ARITHCOMPARE identifier_list ARITHCOMPARE
2859 if ($1 == LT_EXPR && $3 == GT_EXPR)
2867 ivar_decl_list visibility_spec ivar_decls
2872 PRIVATE { objc_public_flag = 2; }
2873 | PROTECTED { objc_public_flag = 0; }
2874 | PUBLIC { objc_public_flag = 1; }
2882 | ivar_decls ivar_decl ';'
2886 pedwarn ("extra semicolon in struct or union specified");
2891 /* There is a shift-reduce conflict here, because `components' may
2892 start with a `typename'. It happens that shifting (the default resolution)
2893 does the right thing, because it treats the `typename' as part of
2894 a `typed_typespecs'.
2896 It is possible that this same technique would allow the distinction
2897 between `notype_initdecls' and `initdecls' to be eliminated.
2898 But I am being cautious and not trying it. */
2901 declspecs_nosc_ts setspecs ivars
2903 POP_DECLSPEC_STACK; }
2904 | declspecs_nosc_nots setspecs ivars
2906 POP_DECLSPEC_STACK; }
2915 | ivars ',' maybe_resetattrs ivar_declarator
2921 $$ = add_instance_variable (objc_ivar_context,
2923 $1, current_declspecs,
2926 | declarator ':' expr_no_commas
2928 $$ = add_instance_variable (objc_ivar_context,
2930 $1, current_declspecs, $3);
2932 | ':' expr_no_commas
2934 $$ = add_instance_variable (objc_ivar_context,
2937 current_declspecs, $2);
2943 { objc_inherit_code = CLASS_METHOD_DECL; }
2945 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2951 objc_pq_context = 1;
2952 if (!objc_implementation_context)
2953 fatal_error ("method definition not in class context");
2957 objc_pq_context = 0;
2958 objc_add_method (objc_implementation_context,
2960 objc_inherit_code == CLASS_METHOD_DECL);
2961 start_method_def ($3);
2965 continue_method_def ();
2969 finish_method_def ();
2973 /* the reason for the strange actions in this rule
2974 is so that notype_initdecls when reached via datadef
2975 can find a valid list of type and sc specs in $0. */
2979 | methodprotolist methodproto
2980 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2991 /* Remember protocol qualifiers in prototypes. */
2992 objc_pq_context = 1;
2996 /* Forget protocol qualifiers here. */
2997 objc_pq_context = 0;
2998 objc_add_method (objc_interface_context,
3000 objc_inherit_code == CLASS_METHOD_DECL);
3006 '(' typename ')' unaryselector
3008 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3013 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3016 | '(' typename ')' keywordselector optparmlist
3018 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3021 | keywordselector optparmlist
3023 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3027 /* "optarglist" assumes that start_method_def has already been called...
3028 if it is not, the "xdecls" will not be placed in the proper scope */
3035 /* to get around the following situation: "int foo (int a) int b; {}" that
3036 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3051 declspecs_ts setspecs myparms ';'
3052 { POP_DECLSPEC_STACK; }
3054 { shadow_tag ($1); }
3055 | declspecs_nots ';'
3056 { pedwarn ("empty declaration"); }
3061 { push_parm_decl ($1); }
3062 | myparms ',' myparm
3063 { push_parm_decl ($3); }
3066 /* A single parameter declaration or parameter type name,
3067 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3070 parm_declarator maybe_attribute
3071 { $$ = build_tree_list (build_tree_list (current_declspecs,
3073 chainon ($2, all_prefix_attributes)); }
3074 | notype_declarator maybe_attribute
3075 { $$ = build_tree_list (build_tree_list (current_declspecs,
3077 chainon ($2, all_prefix_attributes)); }
3078 | absdcl_maybe_attribute
3089 /* oh what a kludge! */
3090 $$ = objc_ellipsis_node;
3098 /* returns a tree list node generated by get_parm_info */
3111 | keywordselector keyworddecl
3113 $$ = chainon ($1, $2);
3126 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3127 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3128 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3129 | TYPESPEC | TYPE_QUAL
3133 selector ':' '(' typename ')' identifier
3135 $$ = build_keyword_decl ($1, $4, $6);
3138 | selector ':' identifier
3140 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3143 | ':' '(' typename ')' identifier
3145 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3150 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3161 | keywordarglist keywordarg
3163 $$ = chainon ($1, $2);
3171 if (TREE_CHAIN ($1) == NULL_TREE)
3172 /* just return the expr., remove a level of indirection */
3173 $$ = TREE_VALUE ($1);
3175 /* we have a comma expr., we will collapse later */
3181 selector ':' keywordexpr
3183 $$ = build_tree_list ($1, $3);
3187 $$ = build_tree_list (NULL_TREE, $2);
3195 $$ = get_class_reference ($1);
3199 $$ = get_class_reference ($1);
3204 '[' receiver messageargs ']'
3205 { $$ = build_tree_list ($2, $3); }
3215 | keywordnamelist keywordname
3217 $$ = chainon ($1, $2);
3224 $$ = build_tree_list ($1, NULL_TREE);
3228 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3233 SELECTOR '(' selectorarg ')'
3240 PROTOCOL '(' identifier ')'
3246 /* extension to support C-structures in the archiver */
3249 ENCODE '(' typename ')'
3251 $$ = groktypename ($3);
3258 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3259 cpplib.h's token codes into yacc's token codes. */
3261 static enum cpp_ttype last_token;
3263 /* The reserved keyword table. */
3267 ENUM_BITFIELD(rid) rid : 16;
3268 unsigned int disable : 16;
3271 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3273 #define D_C89 0x01 /* not in C89 */
3274 #define D_EXT 0x02 /* GCC extension */
3275 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3276 #define D_OBJC 0x08 /* Objective C only */
3278 static const struct resword reswords[] =
3280 { "_Bool", RID_BOOL, 0 },
3281 { "_Complex", RID_COMPLEX, 0 },
3282 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3283 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3284 { "__alignof", RID_ALIGNOF, 0 },
3285 { "__alignof__", RID_ALIGNOF, 0 },
3286 { "__asm", RID_ASM, 0 },
3287 { "__asm__", RID_ASM, 0 },
3288 { "__attribute", RID_ATTRIBUTE, 0 },
3289 { "__attribute__", RID_ATTRIBUTE, 0 },
3290 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3291 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3292 { "__builtin_va_arg", RID_VA_ARG, 0 },
3293 { "__complex", RID_COMPLEX, 0 },
3294 { "__complex__", RID_COMPLEX, 0 },
3295 { "__const", RID_CONST, 0 },
3296 { "__const__", RID_CONST, 0 },
3297 { "__extension__", RID_EXTENSION, 0 },
3298 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3299 { "__imag", RID_IMAGPART, 0 },
3300 { "__imag__", RID_IMAGPART, 0 },
3301 { "__inline", RID_INLINE, 0 },
3302 { "__inline__", RID_INLINE, 0 },
3303 { "__label__", RID_LABEL, 0 },
3304 { "__ptrbase", RID_PTRBASE, 0 },
3305 { "__ptrbase__", RID_PTRBASE, 0 },
3306 { "__ptrextent", RID_PTREXTENT, 0 },
3307 { "__ptrextent__", RID_PTREXTENT, 0 },
3308 { "__ptrvalue", RID_PTRVALUE, 0 },
3309 { "__ptrvalue__", RID_PTRVALUE, 0 },
3310 { "__real", RID_REALPART, 0 },
3311 { "__real__", RID_REALPART, 0 },
3312 { "__restrict", RID_RESTRICT, 0 },
3313 { "__restrict__", RID_RESTRICT, 0 },
3314 { "__signed", RID_SIGNED, 0 },
3315 { "__signed__", RID_SIGNED, 0 },
3316 { "__thread", RID_THREAD, 0 },
3317 { "__typeof", RID_TYPEOF, 0 },
3318 { "__typeof__", RID_TYPEOF, 0 },
3319 { "__volatile", RID_VOLATILE, 0 },
3320 { "__volatile__", RID_VOLATILE, 0 },
3321 { "asm", RID_ASM, D_EXT },
3322 { "auto", RID_AUTO, 0 },
3323 { "break", RID_BREAK, 0 },
3324 { "case", RID_CASE, 0 },
3325 { "char", RID_CHAR, 0 },
3326 { "const", RID_CONST, 0 },
3327 { "continue", RID_CONTINUE, 0 },
3328 { "default", RID_DEFAULT, 0 },
3329 { "do", RID_DO, 0 },
3330 { "double", RID_DOUBLE, 0 },
3331 { "else", RID_ELSE, 0 },
3332 { "enum", RID_ENUM, 0 },
3333 { "extern", RID_EXTERN, 0 },
3334 { "float", RID_FLOAT, 0 },
3335 { "for", RID_FOR, 0 },
3336 { "goto", RID_GOTO, 0 },
3337 { "if", RID_IF, 0 },
3338 { "inline", RID_INLINE, D_EXT89 },
3339 { "int", RID_INT, 0 },
3340 { "long", RID_LONG, 0 },
3341 { "register", RID_REGISTER, 0 },
3342 { "restrict", RID_RESTRICT, D_C89 },
3343 { "return", RID_RETURN, 0 },
3344 { "short", RID_SHORT, 0 },
3345 { "signed", RID_SIGNED, 0 },
3346 { "sizeof", RID_SIZEOF, 0 },
3347 { "static", RID_STATIC, 0 },
3348 { "struct", RID_STRUCT, 0 },
3349 { "switch", RID_SWITCH, 0 },
3350 { "typedef", RID_TYPEDEF, 0 },
3351 { "typeof", RID_TYPEOF, D_EXT },
3352 { "union", RID_UNION, 0 },
3353 { "unsigned", RID_UNSIGNED, 0 },
3354 { "void", RID_VOID, 0 },
3355 { "volatile", RID_VOLATILE, 0 },
3356 { "while", RID_WHILE, 0 },
3358 { "id", RID_ID, D_OBJC },
3360 /* These objc keywords are recognized only immediately after
3362 { "class", RID_AT_CLASS, D_OBJC },
3363 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3364 { "defs", RID_AT_DEFS, D_OBJC },
3365 { "encode", RID_AT_ENCODE, D_OBJC },
3366 { "end", RID_AT_END, D_OBJC },
3367 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3368 { "interface", RID_AT_INTERFACE, D_OBJC },
3369 { "private", RID_AT_PRIVATE, D_OBJC },
3370 { "protected", RID_AT_PROTECTED, D_OBJC },
3371 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3372 { "public", RID_AT_PUBLIC, D_OBJC },
3373 { "selector", RID_AT_SELECTOR, D_OBJC },
3374 { "throw", RID_AT_THROW, D_OBJC },
3375 { "try", RID_AT_TRY, D_OBJC },
3376 { "catch", RID_AT_CATCH, D_OBJC },
3377 { "finally", RID_AT_FINALLY, D_OBJC },
3378 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3379 /* These are recognized only in protocol-qualifier context
3381 { "bycopy", RID_BYCOPY, D_OBJC },
3382 { "byref", RID_BYREF, D_OBJC },
3383 { "in", RID_IN, D_OBJC },
3384 { "inout", RID_INOUT, D_OBJC },
3385 { "oneway", RID_ONEWAY, D_OBJC },
3386 { "out", RID_OUT, D_OBJC },
3389 #define N_reswords (sizeof reswords / sizeof (struct resword))
3391 /* Table mapping from RID_* constants to yacc token numbers.
3392 Unfortunately we have to have entries for all the keywords in all
3394 static const short rid_to_yy[RID_MAX] =
3396 /* RID_STATIC */ STATIC,
3397 /* RID_UNSIGNED */ TYPESPEC,
3398 /* RID_LONG */ TYPESPEC,
3399 /* RID_CONST */ TYPE_QUAL,
3400 /* RID_EXTERN */ SCSPEC,
3401 /* RID_REGISTER */ SCSPEC,
3402 /* RID_TYPEDEF */ SCSPEC,
3403 /* RID_SHORT */ TYPESPEC,
3404 /* RID_INLINE */ SCSPEC,
3405 /* RID_VOLATILE */ TYPE_QUAL,
3406 /* RID_SIGNED */ TYPESPEC,
3407 /* RID_AUTO */ SCSPEC,
3408 /* RID_RESTRICT */ TYPE_QUAL,
3411 /* RID_COMPLEX */ TYPESPEC,
3412 /* RID_THREAD */ SCSPEC,
3416 /* RID_VIRTUAL */ 0,
3417 /* RID_EXPLICIT */ 0,
3419 /* RID_MUTABLE */ 0,
3422 /* RID_IN */ TYPE_QUAL,
3423 /* RID_OUT */ TYPE_QUAL,
3424 /* RID_INOUT */ TYPE_QUAL,
3425 /* RID_BYCOPY */ TYPE_QUAL,
3426 /* RID_BYREF */ TYPE_QUAL,
3427 /* RID_ONEWAY */ TYPE_QUAL,
3430 /* RID_INT */ TYPESPEC,
3431 /* RID_CHAR */ TYPESPEC,
3432 /* RID_FLOAT */ TYPESPEC,
3433 /* RID_DOUBLE */ TYPESPEC,
3434 /* RID_VOID */ TYPESPEC,
3435 /* RID_ENUM */ ENUM,
3436 /* RID_STRUCT */ STRUCT,
3437 /* RID_UNION */ UNION,
3439 /* RID_ELSE */ ELSE,
3440 /* RID_WHILE */ WHILE,
3443 /* RID_SWITCH */ SWITCH,
3444 /* RID_CASE */ CASE,
3445 /* RID_DEFAULT */ DEFAULT,
3446 /* RID_BREAK */ BREAK,
3447 /* RID_CONTINUE */ CONTINUE,
3448 /* RID_RETURN */ RETURN,
3449 /* RID_GOTO */ GOTO,
3450 /* RID_SIZEOF */ SIZEOF,
3453 /* RID_ASM */ ASM_KEYWORD,
3454 /* RID_TYPEOF */ TYPEOF,
3455 /* RID_ALIGNOF */ ALIGNOF,
3456 /* RID_ATTRIBUTE */ ATTRIBUTE,
3457 /* RID_VA_ARG */ VA_ARG,
3458 /* RID_EXTENSION */ EXTENSION,
3459 /* RID_IMAGPART */ IMAGPART,
3460 /* RID_REALPART */ REALPART,
3461 /* RID_LABEL */ LABEL,
3462 /* RID_PTRBASE */ PTR_BASE,
3463 /* RID_PTREXTENT */ PTR_EXTENT,
3464 /* RID_PTRVALUE */ PTR_VALUE,
3466 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3467 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3469 /* RID_FUNCTION_NAME */ FUNC_NAME,
3470 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3471 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3474 /* RID_BOOL */ TYPESPEC,
3478 /* RID_PRIVATE */ 0,
3479 /* RID_PROTECTED */ 0,
3480 /* RID_TEMPLATE */ 0,
3485 /* RID_NAMESPACE */ 0,
3487 /* RID_OPERATOR */ 0,
3492 /* RID_TYPENAME */ 0,
3497 /* RID_CONSTCAST */ 0,
3498 /* RID_DYNCAST */ 0,
3499 /* RID_REINTCAST */ 0,
3500 /* RID_STATCAST */ 0,
3503 /* RID_ID */ OBJECTNAME,
3504 /* RID_AT_ENCODE */ ENCODE,
3505 /* RID_AT_END */ END,
3506 /* RID_AT_CLASS */ CLASS,
3507 /* RID_AT_ALIAS */ ALIAS,
3508 /* RID_AT_DEFS */ DEFS,
3509 /* RID_AT_PRIVATE */ PRIVATE,
3510 /* RID_AT_PROTECTED */ PROTECTED,
3511 /* RID_AT_PUBLIC */ PUBLIC,
3512 /* RID_AT_PROTOCOL */ PROTOCOL,
3513 /* RID_AT_SELECTOR */ SELECTOR,
3514 /* RID_AT_THROW */ AT_THROW,
3515 /* RID_AT_TRY */ AT_TRY,
3516 /* RID_AT_CATCH */ AT_CATCH,
3517 /* RID_AT_FINALLY */ AT_FINALLY,
3518 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3519 /* RID_AT_INTERFACE */ INTERFACE,
3520 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3524 init_reswords (void)
3528 int mask = (flag_isoc99 ? 0 : D_C89)
3529 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3531 if (!c_dialect_objc ())
3534 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3535 for (i = 0; i < N_reswords; i++)
3537 /* If a keyword is disabled, do not enter it into the table
3538 and so create a canonical spelling that isn't a keyword. */
3539 if (reswords[i].disable & mask)
3542 id = get_identifier (reswords[i].word);
3543 C_RID_CODE (id) = reswords[i].rid;
3544 C_IS_RESERVED_WORD (id) = 1;
3545 ridpointers [(int) reswords[i].rid] = id;
3549 #define NAME(type) cpp_type2name (type)
3552 yyerror (const char *msgid)
3554 c_parse_error (msgid, last_token, yylval.ttype);
3563 int objc_force_identifier = objc_need_raw_identifier;
3564 OBJC_NEED_RAW_IDENTIFIER (0);
3567 if (C_IS_RESERVED_WORD (yylval.ttype))
3569 enum rid rid_code = C_RID_CODE (yylval.ttype);
3572 /* Turn non-typedefed refs to "id" into plain identifiers; this
3573 allows constructs like "void foo(id id);" to work. */
3574 if (rid_code == RID_ID)
3576 decl = lookup_name (yylval.ttype);
3577 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3581 if (!OBJC_IS_AT_KEYWORD (rid_code)
3582 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3585 /* Return the canonical spelling for this keyword. */
3586 yylval.ttype = ridpointers[(int) rid_code];
3587 return rid_to_yy[(int) rid_code];
3591 decl = lookup_name (yylval.ttype);
3594 if (TREE_CODE (decl) == TYPE_DECL)
3600 tree objc_interface_decl = is_class_name (yylval.ttype);
3601 /* ObjC class names are in the same namespace as variables and
3602 typedefs, and hence are shadowed by local declarations. */
3603 if (objc_interface_decl
3604 && (global_bindings_p ()
3605 || (!objc_force_identifier && !decl)))
3607 yylval.ttype = objc_interface_decl;
3620 last_token = c_lex (&yylval.ttype);
3623 case CPP_EQ: return '=';
3624 case CPP_NOT: return '!';
3625 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3626 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3627 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3628 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3629 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3630 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3631 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3632 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3633 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3634 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3635 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3636 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3638 case CPP_COMPL: return '~';
3639 case CPP_AND_AND: return ANDAND;
3640 case CPP_OR_OR: return OROR;
3641 case CPP_QUERY: return '?';
3642 case CPP_OPEN_PAREN: return '(';
3643 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3644 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3645 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3646 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3648 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3649 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3650 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3651 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3652 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3653 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3654 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3655 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3656 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3657 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3659 case CPP_OPEN_SQUARE: return '[';
3660 case CPP_CLOSE_SQUARE: return ']';
3661 case CPP_OPEN_BRACE: return '{';
3662 case CPP_CLOSE_BRACE: return '}';
3663 case CPP_ELLIPSIS: return ELLIPSIS;
3665 case CPP_PLUS_PLUS: return PLUSPLUS;
3666 case CPP_MINUS_MINUS: return MINUSMINUS;
3667 case CPP_DEREF: return POINTSAT;
3668 case CPP_DOT: return '.';
3670 /* The following tokens may affect the interpretation of any
3671 identifiers following, if doing Objective-C. */
3672 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3673 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3674 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3675 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3681 return yylexname ();
3684 /* This only happens in Objective-C; it must be a keyword. */
3685 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3696 case CPP_OBJC_STRING:
3699 /* These tokens are C++ specific (and will not be generated
3700 in C mode, but let's be cautious). */
3702 case CPP_DEREF_STAR:
3708 /* These tokens should not survive translation phase 4. */
3711 error ("syntax error at '%s' token", NAME(last_token));
3724 timevar_push (TV_LEX);
3726 timevar_pop (TV_LEX);
3730 /* Function used when yydebug is set, to print a token in more detail. */
3733 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3737 fprintf (file, " [%s]", NAME(last_token));
3748 if (IDENTIFIER_POINTER (t))
3749 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3753 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3754 if (TREE_CODE (t) == INTEGER_CST)
3757 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3758 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3764 /* This is not the ideal place to put these, but we have to get them out
3765 of c-lex.c because cp/lex.c has its own versions. */
3767 /* Free malloced parser stacks if necessary. */
3770 free_parser_stacks (void)
3774 /* Parse the file. */
3779 /* In case there were missing closebraces, get us back to the global
3781 while (! global_bindings_p ())
3783 /* __FUNCTION__ is defined at file scope (""). This
3784 call may not be necessary as my tests indicate it
3785 still works without it. */
3786 finish_fname_decls ();
3790 free (malloced_yyss);
3791 free (malloced_yyvs);
3796 #include "gt-c-parse.h"