1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only.
24 @@ifc ... @@end_ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
41 #include "langhooks.h"
46 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
58 /* Like YYERROR but do call yyerror. */
59 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
61 /* Like the default stack expander, except (1) use realloc when possible,
62 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
64 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
65 give malloced_yyvs its proper type. This is ok since all we need from
66 it is to be able to free it. */
68 static short *malloced_yyss;
69 static void *malloced_yyvs;
71 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
76 newsize = *(YYSSZ) *= 2; \
79 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
80 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
84 newss = really_call_malloc (newsize * sizeof (short)); \
85 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
87 memcpy (newss, *(SS), (SSSIZE)); \
89 memcpy (newvs, *(VS), (VSSIZE)); \
91 if (!newss || !newvs) \
98 malloced_yyss = newss; \
99 malloced_yyvs = (void *) newvs; \
105 %union {long itype; tree ttype; enum tree_code code;
106 location_t location; }
108 /* All identifiers that are not reserved words
109 and are not declared typedefs in the current block */
112 /* All identifiers that are declared typedefs in the current block.
113 In some contexts, they are treated just like IDENTIFIER,
114 but they can also serve as typespecs in declarations. */
117 /* Reserved words that specify storage class.
118 yylval contains an IDENTIFIER_NODE which indicates which one. */
119 %token SCSPEC /* Storage class other than static. */
120 %token STATIC /* Static storage class. */
122 /* Reserved words that specify type.
123 yylval contains an IDENTIFIER_NODE which indicates which one. */
126 /* Reserved words that qualify type: "const", "volatile", or "restrict".
127 yylval contains an IDENTIFIER_NODE which indicates which one. */
130 /* Character or numeric constants.
131 yylval is the node for the constant. */
134 /* String constants in raw form.
135 yylval is a STRING_CST node. */
139 /* "...", used for functions with variable arglists. */
142 /* the reserved words */
143 /* SCO include files test "ASM", so use something else. */
144 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
145 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
146 %token ATTRIBUTE EXTENSION LABEL
147 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
148 %token PTR_VALUE PTR_BASE PTR_EXTENT
151 /* Add precedence rules to solve dangling else s/r conflict */
155 /* Define the operator tokens and their precedences.
156 The value is an integer because, if used, it is the tree code
157 to use in the expression made from the operator. */
159 %right <code> ASSIGN '='
160 %right <code> '?' ':'
166 %left <code> EQCOMPARE
167 %left <code> ARITHCOMPARE
168 %left <code> LSHIFT RSHIFT
170 %left <code> '*' '/' '%'
171 %right <code> UNARY PLUSPLUS MINUSMINUS
173 %left <code> POINTSAT '.' '(' '['
175 /* The Objective-C keywords. These are included in C and in
176 Objective C, so that the token codes are the same in both. */
177 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
178 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
179 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
183 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
184 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
186 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
187 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
188 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
189 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
190 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
191 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
192 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
193 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
194 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
195 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
196 %type <ttype> declspecs_ts declspecs_nots
197 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
198 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
199 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
200 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
201 %type <ttype> typespec_nonreserved_nonattr
203 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
204 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
205 %type <ttype> init maybeasm
206 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
207 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
208 %type <ttype> any_word
210 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
211 %type <ttype> do_stmt_start poplevel stmt label
213 %type <ttype> c99_block_start c99_block_end
214 %type <ttype> declarator
215 %type <ttype> notype_declarator after_type_declarator
216 %type <ttype> parm_declarator
217 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
218 %type <ttype> array_declarator
220 %type <ttype> structsp_attr structsp_nonattr
221 %type <ttype> component_decl_list component_decl_list2
222 %type <ttype> component_decl components components_notype component_declarator
223 %type <ttype> component_notype_declarator
224 %type <ttype> enumlist enumerator
225 %type <ttype> struct_head union_head enum_head
226 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
227 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
228 %type <ttype> xexpr parms parm firstparm identifiers
230 %type <ttype> parmlist parmlist_1 parmlist_2
231 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
232 %type <ttype> identifiers_or_typenames
234 %type <itype> setspecs setspecs_fp extension
236 %type <location> save_location
239 /* the Objective-C nonterminals */
241 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
242 %type <ttype> methoddecl unaryselector keywordselector selector
243 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
244 %type <ttype> keywordexpr keywordarglist keywordarg
245 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
246 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
247 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
249 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
251 %type <ttype> superclass
252 %type <itype> objc_try_catch_stmt objc_finally_block
256 /* Number of statements (loosely speaking) and compound statements
258 static int stmt_count;
259 static int compstmt_count;
261 /* Input location of the end of the body of last simple_if;
262 used by the stmt-rule immediately after simple_if returns. */
263 static location_t if_stmt_locus;
266 /* List of types and structure classes of the current declaration. */
267 static GTY(()) tree current_declspecs;
268 static GTY(()) tree prefix_attributes;
270 /* List of all the attributes applying to the identifier currently being
271 declared; includes prefix_attributes and possibly some more attributes
272 just after a comma. */
273 static GTY(()) tree all_prefix_attributes;
275 /* Stack of saved values of current_declspecs, prefix_attributes and
276 all_prefix_attributes. */
277 static GTY(()) tree declspec_stack;
279 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
280 should be called from the productions making use of setspecs. */
281 #define PUSH_DECLSPEC_STACK \
283 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
284 all_prefix_attributes), \
289 #define POP_DECLSPEC_STACK \
291 current_declspecs = TREE_VALUE (declspec_stack); \
292 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
293 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
294 declspec_stack = TREE_CHAIN (declspec_stack); \
297 /* For __extension__, save/restore the warning flags which are
298 controlled by __extension__. */
299 #define SAVE_EXT_FLAGS() \
301 | (warn_pointer_arith << 1) \
302 | (warn_traditional << 2) \
305 #define RESTORE_EXT_FLAGS(val) \
307 pedantic = val & 1; \
308 warn_pointer_arith = (val >> 1) & 1; \
309 warn_traditional = (val >> 2) & 1; \
310 flag_iso = (val >> 3) & 1; \
314 /* Objective-C specific parser/lexer information */
316 static enum tree_code objc_inherit_code;
317 static int objc_pq_context = 0, objc_public_flag = 0;
319 /* The following flag is needed to contextualize ObjC lexical analysis.
320 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
321 an identifier to an ObjC class, even if a class with that name
323 static int objc_need_raw_identifier;
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
328 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
331 static bool parsing_iso_function_signature;
333 /* Tell yyparse how to print a token's value, if yydebug is set. */
335 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
337 static void yyprint (FILE *, int, YYSTYPE);
338 static void yyerror (const char *);
339 static int yylexname (void);
340 static inline int _yylex (void);
341 static int yylex (void);
342 static void init_reswords (void);
344 /* Initialisation routine for this file. */
356 pedwarn ("ISO C forbids an empty source file");
361 /* the reason for the strange actions in this rule
362 is so that notype_initdecls when reached via datadef
363 can find a valid list of type and sc specs in $0. */
366 {$<ttype>$ = NULL_TREE; } extdef
367 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
372 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
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 = (*lang_hooks.truthvalue_conversion)
584 (default_conversion ($1));
585 skip_evaluation += $1 == truthvalue_false_node; }
587 { skip_evaluation -= $1 == truthvalue_false_node;
588 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
589 | expr_no_commas OROR
590 { $1 = (*lang_hooks.truthvalue_conversion)
591 (default_conversion ($1));
592 skip_evaluation += $1 == truthvalue_true_node; }
594 { skip_evaluation -= $1 == truthvalue_true_node;
595 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
597 { $1 = (*lang_hooks.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 $$ = build_conditional_expr ($1, $4, $7); }
608 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
609 /* Make sure first operand is calculated only once. */
610 $<ttype>2 = save_expr (default_conversion ($1));
611 $1 = (*lang_hooks.truthvalue_conversion) ($<ttype>2);
612 skip_evaluation += $1 == truthvalue_true_node; }
614 { skip_evaluation -= $1 == truthvalue_true_node;
615 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
616 | expr_no_commas '=' expr_no_commas
618 $$ = build_modify_expr ($1, NOP_EXPR, $3);
619 class = TREE_CODE_CLASS (TREE_CODE ($$));
620 if (IS_EXPR_CODE_CLASS (class))
621 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
623 | expr_no_commas ASSIGN expr_no_commas
625 $$ = build_modify_expr ($1, $2, $3);
626 /* This inhibits warnings in
627 c_common_truthvalue_conversion. */
628 class = TREE_CODE_CLASS (TREE_CODE ($$));
629 if (IS_EXPR_CODE_CLASS (class))
630 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
637 if (yychar == YYEMPTY)
639 $$ = build_external_ref ($1, yychar == '(');
644 { $$ = fname_decl (C_RID_CODE ($$), $$); }
645 | '(' typename ')' '{'
646 { start_init (NULL_TREE, NULL, 0);
647 $2 = groktypename ($2);
648 really_start_incremental_init ($2); }
649 initlist_maybe_comma '}' %prec UNARY
650 { tree constructor = pop_init_level (0);
654 if (pedantic && ! flag_isoc99)
655 pedwarn ("ISO C90 forbids compound literals");
656 $$ = build_compound_literal (type, constructor);
659 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
660 if (IS_EXPR_CODE_CLASS (class))
661 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
664 { $$ = error_mark_node; }
665 | compstmt_primary_start compstmt_nostart ')'
666 { tree saved_last_tree;
669 pedwarn ("ISO C forbids braced-groups within expressions");
670 saved_last_tree = COMPOUND_BODY ($1);
671 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
672 last_tree = saved_last_tree;
673 TREE_CHAIN (last_tree) = NULL_TREE;
675 last_expr_type = void_type_node;
676 $$ = build1 (STMT_EXPR, last_expr_type, $1);
677 TREE_SIDE_EFFECTS ($$) = 1;
679 | compstmt_primary_start error ')'
681 last_tree = COMPOUND_BODY ($1);
682 TREE_CHAIN (last_tree) = NULL_TREE;
683 $$ = error_mark_node;
685 | primary '(' exprlist ')' %prec '.'
686 { $$ = build_function_call ($1, $3); }
687 | VA_ARG '(' expr_no_commas ',' typename ')'
688 { $$ = build_va_arg ($3, groktypename ($5)); }
690 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
696 if (TREE_CODE (c) != INTEGER_CST)
697 error ("first argument to __builtin_choose_expr not a constant");
698 $$ = integer_zerop (c) ? $7 : $5;
700 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
704 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
705 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
707 $$ = comptypes (e1, e2, COMPARE_STRICT)
708 ? build_int_2 (1, 0) : build_int_2 (0, 0);
710 | primary '[' expr ']' %prec '.'
711 { $$ = build_array_ref ($1, $3); }
712 | primary '.' identifier
715 if (!is_public ($1, $3))
716 $$ = error_mark_node;
719 $$ = build_component_ref ($1, $3);
721 | primary POINTSAT identifier
723 tree expr = build_indirect_ref ($1, "->");
726 if (!is_public (expr, $3))
727 $$ = error_mark_node;
730 $$ = build_component_ref (expr, $3);
733 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
735 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
738 { $$ = build_message_expr ($1); }
740 { $$ = build_selector_expr ($1); }
742 { $$ = build_protocol_expr ($1); }
744 { $$ = build_encode_expr ($1); }
746 { $$ = build_objc_string_object ($1); }
750 old_style_parm_decls:
751 old_style_parm_decls_1
753 parsing_iso_function_signature = false; /* Reset after decls. */
757 old_style_parm_decls_1:
760 if (warn_traditional && !in_system_header
761 && parsing_iso_function_signature)
762 warning ("traditional C rejects ISO C style function definitions");
763 if (warn_old_style_definition && !in_system_header
764 && !parsing_iso_function_signature)
765 warning ("old-style parameter declaration");
766 parsing_iso_function_signature = false; /* Reset after warning. */
770 if (warn_old_style_definition && !in_system_header)
771 warning ("old-style parameter declaration");
775 /* The following are analogous to lineno_decl, decls and decl
776 except that they do not allow nested functions.
777 They are used for old-style parm decls. */
779 save_location datadecl
786 | datadecls lineno_datadecl
787 | lineno_datadecl errstmt
790 /* We don't allow prefix attributes here because they cause reduce/reduce
791 conflicts: we can't know whether we're parsing a function decl with
792 attribute suffix, or function defn with attribute prefix on first old
795 declspecs_ts_nosa setspecs initdecls ';'
796 { POP_DECLSPEC_STACK; }
797 | declspecs_nots_nosa setspecs notype_initdecls ';'
798 { POP_DECLSPEC_STACK; }
799 | declspecs_ts_nosa ';'
800 { shadow_tag_warned ($1, 1);
801 pedwarn ("empty declaration"); }
802 | declspecs_nots_nosa ';'
803 { pedwarn ("empty declaration"); }
806 /* This combination which saves a lineno before a decl
807 is the normal thing to use, rather than decl itself.
808 This is to avoid shift/reduce conflicts in contexts
809 where statement labels are allowed. */
815 /* records the type and storage class specs to use for processing
816 the declarators that follow.
817 Maintains a stack of outer-level values of current_declspecs,
818 for the sake of parm declarations nested in function declarators. */
819 setspecs: /* empty */
820 { pending_xref_error ();
822 split_specs_attrs ($<ttype>0,
823 ¤t_declspecs, &prefix_attributes);
824 all_prefix_attributes = prefix_attributes; }
827 /* Possibly attributes after a comma, which should reset all_prefix_attributes
828 to prefix_attributes with these ones chained on the front. */
831 { all_prefix_attributes = chainon ($1, prefix_attributes); }
835 declspecs_ts setspecs initdecls ';'
836 { POP_DECLSPEC_STACK; }
837 | declspecs_nots setspecs notype_initdecls ';'
838 { POP_DECLSPEC_STACK; }
839 | declspecs_ts setspecs nested_function
840 { POP_DECLSPEC_STACK; }
841 | declspecs_nots setspecs notype_nested_function
842 { POP_DECLSPEC_STACK; }
846 { RESTORE_EXT_FLAGS ($1); }
849 /* A list of declaration specifiers. These are:
851 - Storage class specifiers (scspec), which for GCC currently includes
852 function specifiers ("inline").
854 - Type specifiers (typespec_*).
856 - Type qualifiers (TYPE_QUAL).
858 - Attribute specifier lists (attributes).
860 These are stored as a TREE_LIST; the head of the list is the last
861 item in the specifier list. Each entry in the list has either a
862 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
863 is a single other specifier or qualifier; and a TREE_CHAIN that is the
864 rest of the list. TREE_STATIC is set on the list if something other
865 than a storage class specifier or attribute has been seen; this is used
866 to warn for the obsolescent usage of storage class specifiers other than
867 at the start of the list. (Doing this properly would require function
868 specifiers to be handled separately from storage class specifiers.)
870 The various cases below are classified according to:
872 (a) Whether a storage class specifier is included or not; some
873 places in the grammar disallow storage class specifiers (_sc or _nosc).
875 (b) Whether a type specifier has been seen; after a type specifier,
876 a typedef name is an identifier to redeclare (_ts or _nots).
878 (c) Whether the list starts with an attribute; in certain places,
879 the grammar requires specifiers that don't start with an attribute
882 (d) Whether the list ends with an attribute (or a specifier such that
883 any following attribute would have been parsed as part of that specifier);
884 this avoids shift-reduce conflicts in the parsing of attributes
889 (i) Distinguish between function specifiers and storage class specifiers,
890 at least for the purpose of warnings about obsolescent usage.
892 (ii) Halve the number of productions here by eliminating the _sc/_nosc
893 distinction and instead checking where required that storage class
894 specifiers aren't present. */
896 /* Declspecs which contain at least one type specifier or typedef name.
897 (Just `const' or `volatile' is not enough.)
898 A typedef'd name following these is taken as a name to be declared.
899 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
901 declspecs_nosc_nots_nosa_noea:
903 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
904 TREE_STATIC ($$) = 1; }
905 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
906 { $$ = tree_cons (NULL_TREE, $2, $1);
907 TREE_STATIC ($$) = 1; }
908 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
909 { $$ = tree_cons (NULL_TREE, $2, $1);
910 TREE_STATIC ($$) = 1; }
913 declspecs_nosc_nots_nosa_ea:
914 declspecs_nosc_nots_nosa_noea attributes
915 { $$ = tree_cons ($2, NULL_TREE, $1);
916 TREE_STATIC ($$) = TREE_STATIC ($1); }
919 declspecs_nosc_nots_sa_noea:
920 declspecs_nosc_nots_sa_noea TYPE_QUAL
921 { $$ = tree_cons (NULL_TREE, $2, $1);
922 TREE_STATIC ($$) = 1; }
923 | declspecs_nosc_nots_sa_ea TYPE_QUAL
924 { $$ = tree_cons (NULL_TREE, $2, $1);
925 TREE_STATIC ($$) = 1; }
928 declspecs_nosc_nots_sa_ea:
930 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
931 TREE_STATIC ($$) = 0; }
932 | declspecs_nosc_nots_sa_noea attributes
933 { $$ = tree_cons ($2, NULL_TREE, $1);
934 TREE_STATIC ($$) = TREE_STATIC ($1); }
937 declspecs_nosc_ts_nosa_noea:
939 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
940 TREE_STATIC ($$) = 1; }
941 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
942 { $$ = tree_cons (NULL_TREE, $2, $1);
943 TREE_STATIC ($$) = 1; }
944 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
945 { $$ = tree_cons (NULL_TREE, $2, $1);
946 TREE_STATIC ($$) = 1; }
947 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
948 { $$ = tree_cons (NULL_TREE, $2, $1);
949 TREE_STATIC ($$) = 1; }
950 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
951 { $$ = tree_cons (NULL_TREE, $2, $1);
952 TREE_STATIC ($$) = 1; }
953 | declspecs_nosc_nots_nosa_noea typespec_nonattr
954 { $$ = tree_cons (NULL_TREE, $2, $1);
955 TREE_STATIC ($$) = 1; }
956 | declspecs_nosc_nots_nosa_ea typespec_nonattr
957 { $$ = tree_cons (NULL_TREE, $2, $1);
958 TREE_STATIC ($$) = 1; }
961 declspecs_nosc_ts_nosa_ea:
963 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
964 TREE_STATIC ($$) = 1; }
965 | declspecs_nosc_ts_nosa_noea attributes
966 { $$ = tree_cons ($2, NULL_TREE, $1);
967 TREE_STATIC ($$) = TREE_STATIC ($1); }
968 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
969 { $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = 1; }
971 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
972 { $$ = tree_cons (NULL_TREE, $2, $1);
973 TREE_STATIC ($$) = 1; }
974 | declspecs_nosc_nots_nosa_noea typespec_attr
975 { $$ = tree_cons (NULL_TREE, $2, $1);
976 TREE_STATIC ($$) = 1; }
977 | declspecs_nosc_nots_nosa_ea typespec_attr
978 { $$ = tree_cons (NULL_TREE, $2, $1);
979 TREE_STATIC ($$) = 1; }
982 declspecs_nosc_ts_sa_noea:
983 declspecs_nosc_ts_sa_noea TYPE_QUAL
984 { $$ = tree_cons (NULL_TREE, $2, $1);
985 TREE_STATIC ($$) = 1; }
986 | declspecs_nosc_ts_sa_ea TYPE_QUAL
987 { $$ = tree_cons (NULL_TREE, $2, $1);
988 TREE_STATIC ($$) = 1; }
989 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
990 { $$ = tree_cons (NULL_TREE, $2, $1);
991 TREE_STATIC ($$) = 1; }
992 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
993 { $$ = tree_cons (NULL_TREE, $2, $1);
994 TREE_STATIC ($$) = 1; }
995 | declspecs_nosc_nots_sa_noea typespec_nonattr
996 { $$ = tree_cons (NULL_TREE, $2, $1);
997 TREE_STATIC ($$) = 1; }
998 | declspecs_nosc_nots_sa_ea typespec_nonattr
999 { $$ = tree_cons (NULL_TREE, $2, $1);
1000 TREE_STATIC ($$) = 1; }
1003 declspecs_nosc_ts_sa_ea:
1004 declspecs_nosc_ts_sa_noea attributes
1005 { $$ = tree_cons ($2, NULL_TREE, $1);
1006 TREE_STATIC ($$) = TREE_STATIC ($1); }
1007 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1008 { $$ = tree_cons (NULL_TREE, $2, $1);
1009 TREE_STATIC ($$) = 1; }
1010 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1011 { $$ = tree_cons (NULL_TREE, $2, $1);
1012 TREE_STATIC ($$) = 1; }
1013 | declspecs_nosc_nots_sa_noea typespec_attr
1014 { $$ = tree_cons (NULL_TREE, $2, $1);
1015 TREE_STATIC ($$) = 1; }
1016 | declspecs_nosc_nots_sa_ea typespec_attr
1017 { $$ = tree_cons (NULL_TREE, $2, $1);
1018 TREE_STATIC ($$) = 1; }
1021 declspecs_sc_nots_nosa_noea:
1023 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1024 TREE_STATIC ($$) = 0; }
1025 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1026 { $$ = tree_cons (NULL_TREE, $2, $1);
1027 TREE_STATIC ($$) = 1; }
1028 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1029 { $$ = tree_cons (NULL_TREE, $2, $1);
1030 TREE_STATIC ($$) = 1; }
1031 | declspecs_nosc_nots_nosa_noea scspec
1032 { if (extra_warnings && TREE_STATIC ($1))
1033 warning ("`%s' is not at beginning of declaration",
1034 IDENTIFIER_POINTER ($2));
1035 $$ = tree_cons (NULL_TREE, $2, $1);
1036 TREE_STATIC ($$) = TREE_STATIC ($1); }
1037 | declspecs_nosc_nots_nosa_ea scspec
1038 { if (extra_warnings && TREE_STATIC ($1))
1039 warning ("`%s' is not at beginning of declaration",
1040 IDENTIFIER_POINTER ($2));
1041 $$ = tree_cons (NULL_TREE, $2, $1);
1042 TREE_STATIC ($$) = TREE_STATIC ($1); }
1043 | declspecs_sc_nots_nosa_noea scspec
1044 { if (extra_warnings && TREE_STATIC ($1))
1045 warning ("`%s' is not at beginning of declaration",
1046 IDENTIFIER_POINTER ($2));
1047 $$ = tree_cons (NULL_TREE, $2, $1);
1048 TREE_STATIC ($$) = TREE_STATIC ($1); }
1049 | declspecs_sc_nots_nosa_ea scspec
1050 { if (extra_warnings && TREE_STATIC ($1))
1051 warning ("`%s' is not at beginning of declaration",
1052 IDENTIFIER_POINTER ($2));
1053 $$ = tree_cons (NULL_TREE, $2, $1);
1054 TREE_STATIC ($$) = TREE_STATIC ($1); }
1057 declspecs_sc_nots_nosa_ea:
1058 declspecs_sc_nots_nosa_noea attributes
1059 { $$ = tree_cons ($2, NULL_TREE, $1);
1060 TREE_STATIC ($$) = TREE_STATIC ($1); }
1063 declspecs_sc_nots_sa_noea:
1064 declspecs_sc_nots_sa_noea TYPE_QUAL
1065 { $$ = tree_cons (NULL_TREE, $2, $1);
1066 TREE_STATIC ($$) = 1; }
1067 | declspecs_sc_nots_sa_ea TYPE_QUAL
1068 { $$ = tree_cons (NULL_TREE, $2, $1);
1069 TREE_STATIC ($$) = 1; }
1070 | declspecs_nosc_nots_sa_noea scspec
1071 { if (extra_warnings && TREE_STATIC ($1))
1072 warning ("`%s' is not at beginning of declaration",
1073 IDENTIFIER_POINTER ($2));
1074 $$ = tree_cons (NULL_TREE, $2, $1);
1075 TREE_STATIC ($$) = TREE_STATIC ($1); }
1076 | declspecs_nosc_nots_sa_ea scspec
1077 { if (extra_warnings && TREE_STATIC ($1))
1078 warning ("`%s' is not at beginning of declaration",
1079 IDENTIFIER_POINTER ($2));
1080 $$ = tree_cons (NULL_TREE, $2, $1);
1081 TREE_STATIC ($$) = TREE_STATIC ($1); }
1082 | declspecs_sc_nots_sa_noea scspec
1083 { if (extra_warnings && TREE_STATIC ($1))
1084 warning ("`%s' is not at beginning of declaration",
1085 IDENTIFIER_POINTER ($2));
1086 $$ = tree_cons (NULL_TREE, $2, $1);
1087 TREE_STATIC ($$) = TREE_STATIC ($1); }
1088 | declspecs_sc_nots_sa_ea scspec
1089 { if (extra_warnings && TREE_STATIC ($1))
1090 warning ("`%s' is not at beginning of declaration",
1091 IDENTIFIER_POINTER ($2));
1092 $$ = tree_cons (NULL_TREE, $2, $1);
1093 TREE_STATIC ($$) = TREE_STATIC ($1); }
1096 declspecs_sc_nots_sa_ea:
1097 declspecs_sc_nots_sa_noea attributes
1098 { $$ = tree_cons ($2, NULL_TREE, $1);
1099 TREE_STATIC ($$) = TREE_STATIC ($1); }
1102 declspecs_sc_ts_nosa_noea:
1103 declspecs_sc_ts_nosa_noea TYPE_QUAL
1104 { $$ = tree_cons (NULL_TREE, $2, $1);
1105 TREE_STATIC ($$) = 1; }
1106 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1107 { $$ = tree_cons (NULL_TREE, $2, $1);
1108 TREE_STATIC ($$) = 1; }
1109 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1110 { $$ = tree_cons (NULL_TREE, $2, $1);
1111 TREE_STATIC ($$) = 1; }
1112 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1113 { $$ = tree_cons (NULL_TREE, $2, $1);
1114 TREE_STATIC ($$) = 1; }
1115 | declspecs_sc_nots_nosa_noea typespec_nonattr
1116 { $$ = tree_cons (NULL_TREE, $2, $1);
1117 TREE_STATIC ($$) = 1; }
1118 | declspecs_sc_nots_nosa_ea typespec_nonattr
1119 { $$ = tree_cons (NULL_TREE, $2, $1);
1120 TREE_STATIC ($$) = 1; }
1121 | declspecs_nosc_ts_nosa_noea scspec
1122 { if (extra_warnings && TREE_STATIC ($1))
1123 warning ("`%s' is not at beginning of declaration",
1124 IDENTIFIER_POINTER ($2));
1125 $$ = tree_cons (NULL_TREE, $2, $1);
1126 TREE_STATIC ($$) = TREE_STATIC ($1); }
1127 | declspecs_nosc_ts_nosa_ea scspec
1128 { if (extra_warnings && TREE_STATIC ($1))
1129 warning ("`%s' is not at beginning of declaration",
1130 IDENTIFIER_POINTER ($2));
1131 $$ = tree_cons (NULL_TREE, $2, $1);
1132 TREE_STATIC ($$) = TREE_STATIC ($1); }
1133 | declspecs_sc_ts_nosa_noea scspec
1134 { if (extra_warnings && TREE_STATIC ($1))
1135 warning ("`%s' is not at beginning of declaration",
1136 IDENTIFIER_POINTER ($2));
1137 $$ = tree_cons (NULL_TREE, $2, $1);
1138 TREE_STATIC ($$) = TREE_STATIC ($1); }
1139 | declspecs_sc_ts_nosa_ea scspec
1140 { if (extra_warnings && TREE_STATIC ($1))
1141 warning ("`%s' is not at beginning of declaration",
1142 IDENTIFIER_POINTER ($2));
1143 $$ = tree_cons (NULL_TREE, $2, $1);
1144 TREE_STATIC ($$) = TREE_STATIC ($1); }
1147 declspecs_sc_ts_nosa_ea:
1148 declspecs_sc_ts_nosa_noea attributes
1149 { $$ = tree_cons ($2, NULL_TREE, $1);
1150 TREE_STATIC ($$) = TREE_STATIC ($1); }
1151 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1152 { $$ = tree_cons (NULL_TREE, $2, $1);
1153 TREE_STATIC ($$) = 1; }
1154 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1155 { $$ = tree_cons (NULL_TREE, $2, $1);
1156 TREE_STATIC ($$) = 1; }
1157 | declspecs_sc_nots_nosa_noea typespec_attr
1158 { $$ = tree_cons (NULL_TREE, $2, $1);
1159 TREE_STATIC ($$) = 1; }
1160 | declspecs_sc_nots_nosa_ea typespec_attr
1161 { $$ = tree_cons (NULL_TREE, $2, $1);
1162 TREE_STATIC ($$) = 1; }
1165 declspecs_sc_ts_sa_noea:
1166 declspecs_sc_ts_sa_noea TYPE_QUAL
1167 { $$ = tree_cons (NULL_TREE, $2, $1);
1168 TREE_STATIC ($$) = 1; }
1169 | declspecs_sc_ts_sa_ea TYPE_QUAL
1170 { $$ = tree_cons (NULL_TREE, $2, $1);
1171 TREE_STATIC ($$) = 1; }
1172 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1173 { $$ = tree_cons (NULL_TREE, $2, $1);
1174 TREE_STATIC ($$) = 1; }
1175 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1176 { $$ = tree_cons (NULL_TREE, $2, $1);
1177 TREE_STATIC ($$) = 1; }
1178 | declspecs_sc_nots_sa_noea typespec_nonattr
1179 { $$ = tree_cons (NULL_TREE, $2, $1);
1180 TREE_STATIC ($$) = 1; }
1181 | declspecs_sc_nots_sa_ea typespec_nonattr
1182 { $$ = tree_cons (NULL_TREE, $2, $1);
1183 TREE_STATIC ($$) = 1; }
1184 | declspecs_nosc_ts_sa_noea scspec
1185 { if (extra_warnings && TREE_STATIC ($1))
1186 warning ("`%s' is not at beginning of declaration",
1187 IDENTIFIER_POINTER ($2));
1188 $$ = tree_cons (NULL_TREE, $2, $1);
1189 TREE_STATIC ($$) = TREE_STATIC ($1); }
1190 | declspecs_nosc_ts_sa_ea scspec
1191 { if (extra_warnings && TREE_STATIC ($1))
1192 warning ("`%s' is not at beginning of declaration",
1193 IDENTIFIER_POINTER ($2));
1194 $$ = tree_cons (NULL_TREE, $2, $1);
1195 TREE_STATIC ($$) = TREE_STATIC ($1); }
1196 | declspecs_sc_ts_sa_noea scspec
1197 { if (extra_warnings && TREE_STATIC ($1))
1198 warning ("`%s' is not at beginning of declaration",
1199 IDENTIFIER_POINTER ($2));
1200 $$ = tree_cons (NULL_TREE, $2, $1);
1201 TREE_STATIC ($$) = TREE_STATIC ($1); }
1202 | declspecs_sc_ts_sa_ea scspec
1203 { if (extra_warnings && TREE_STATIC ($1))
1204 warning ("`%s' is not at beginning of declaration",
1205 IDENTIFIER_POINTER ($2));
1206 $$ = tree_cons (NULL_TREE, $2, $1);
1207 TREE_STATIC ($$) = TREE_STATIC ($1); }
1210 declspecs_sc_ts_sa_ea:
1211 declspecs_sc_ts_sa_noea attributes
1212 { $$ = tree_cons ($2, NULL_TREE, $1);
1213 TREE_STATIC ($$) = TREE_STATIC ($1); }
1214 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1215 { $$ = tree_cons (NULL_TREE, $2, $1);
1216 TREE_STATIC ($$) = 1; }
1217 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1218 { $$ = tree_cons (NULL_TREE, $2, $1);
1219 TREE_STATIC ($$) = 1; }
1220 | declspecs_sc_nots_sa_noea typespec_attr
1221 { $$ = tree_cons (NULL_TREE, $2, $1);
1222 TREE_STATIC ($$) = 1; }
1223 | declspecs_sc_nots_sa_ea typespec_attr
1224 { $$ = tree_cons (NULL_TREE, $2, $1);
1225 TREE_STATIC ($$) = 1; }
1228 /* Particular useful classes of declspecs. */
1230 declspecs_nosc_ts_nosa_noea
1231 | declspecs_nosc_ts_nosa_ea
1232 | declspecs_nosc_ts_sa_noea
1233 | declspecs_nosc_ts_sa_ea
1234 | declspecs_sc_ts_nosa_noea
1235 | declspecs_sc_ts_nosa_ea
1236 | declspecs_sc_ts_sa_noea
1237 | declspecs_sc_ts_sa_ea
1241 declspecs_nosc_nots_nosa_noea
1242 | declspecs_nosc_nots_nosa_ea
1243 | declspecs_nosc_nots_sa_noea
1244 | declspecs_nosc_nots_sa_ea
1245 | declspecs_sc_nots_nosa_noea
1246 | declspecs_sc_nots_nosa_ea
1247 | declspecs_sc_nots_sa_noea
1248 | declspecs_sc_nots_sa_ea
1252 declspecs_nosc_ts_nosa_noea
1253 | declspecs_nosc_ts_nosa_ea
1254 | declspecs_sc_ts_nosa_noea
1255 | declspecs_sc_ts_nosa_ea
1258 declspecs_nots_nosa:
1259 declspecs_nosc_nots_nosa_noea
1260 | declspecs_nosc_nots_nosa_ea
1261 | declspecs_sc_nots_nosa_noea
1262 | declspecs_sc_nots_nosa_ea
1266 declspecs_nosc_ts_nosa_noea
1267 | declspecs_nosc_ts_nosa_ea
1268 | declspecs_nosc_ts_sa_noea
1269 | declspecs_nosc_ts_sa_ea
1272 declspecs_nosc_nots:
1273 declspecs_nosc_nots_nosa_noea
1274 | declspecs_nosc_nots_nosa_ea
1275 | declspecs_nosc_nots_sa_noea
1276 | declspecs_nosc_nots_sa_ea
1280 declspecs_nosc_ts_nosa_noea
1281 | declspecs_nosc_ts_nosa_ea
1282 | declspecs_nosc_ts_sa_noea
1283 | declspecs_nosc_ts_sa_ea
1284 | declspecs_nosc_nots_nosa_noea
1285 | declspecs_nosc_nots_nosa_ea
1286 | declspecs_nosc_nots_sa_noea
1287 | declspecs_nosc_nots_sa_ea
1291 declspecs_nosc_nots_nosa_noea
1292 | declspecs_nosc_nots_nosa_ea
1293 | declspecs_nosc_nots_sa_noea
1294 | declspecs_nosc_nots_sa_ea
1295 | declspecs_nosc_ts_nosa_noea
1296 | declspecs_nosc_ts_nosa_ea
1297 | declspecs_nosc_ts_sa_noea
1298 | declspecs_nosc_ts_sa_ea
1299 | declspecs_sc_nots_nosa_noea
1300 | declspecs_sc_nots_nosa_ea
1301 | declspecs_sc_nots_sa_noea
1302 | declspecs_sc_nots_sa_ea
1303 | declspecs_sc_ts_nosa_noea
1304 | declspecs_sc_ts_nosa_ea
1305 | declspecs_sc_ts_sa_noea
1306 | declspecs_sc_ts_sa_ea
1309 /* A (possibly empty) sequence of type qualifiers and attributes. */
1310 maybe_type_quals_attrs:
1313 | declspecs_nosc_nots
1317 /* A type specifier (but not a type qualifier).
1318 Once we have seen one of these in a declaration,
1319 if a typedef name appears then it is being redeclared.
1321 The _reserved versions start with a reserved word and may appear anywhere
1322 in the declaration specifiers; the _nonreserved versions may only
1323 appear before any other type specifiers, and after that are (if names)
1326 FIXME: should the _nonreserved version be restricted to names being
1327 redeclared only? The other entries there relate only the GNU extensions
1328 and Objective C, and are historically parsed thus, and don't make sense
1329 after other type specifiers, but it might be cleaner to count them as
1332 _attr means: specifiers that either end with attributes,
1333 or are such that any following attributes would
1334 be parsed as part of the specifier.
1336 _nonattr: specifiers. */
1339 typespec_reserved_nonattr
1340 | typespec_nonreserved_nonattr
1344 typespec_reserved_attr
1347 typespec_reserved_nonattr:
1349 { OBJC_NEED_RAW_IDENTIFIER (1); }
1353 typespec_reserved_attr:
1357 typespec_nonreserved_nonattr:
1359 { /* For a typedef name, record the meaning, not the name.
1360 In case of `foo foo, bar;'. */
1361 $$ = lookup_name ($1); }
1363 | CLASSNAME protocolrefs
1364 { $$ = get_static_reference ($1, $2); }
1365 | OBJECTNAME protocolrefs
1366 { $$ = get_object_reference ($2); }
1368 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1369 - nisse@lysator.liu.se */
1370 | non_empty_protocolrefs
1371 { $$ = get_object_reference ($1); }
1373 | typeof '(' expr ')'
1374 { skip_evaluation--;
1375 if (TREE_CODE ($3) == COMPONENT_REF
1376 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1377 error ("`typeof' applied to a bit-field");
1378 $$ = TREE_TYPE ($3); }
1379 | typeof '(' typename ')'
1380 { skip_evaluation--; $$ = groktypename ($3); }
1383 /* typespec_nonreserved_attr does not exist. */
1387 | initdecls ',' maybe_resetattrs initdcl
1392 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1398 | ASM_KEYWORD '(' STRING ')'
1403 declarator maybeasm maybe_attribute '='
1404 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1405 chainon ($3, all_prefix_attributes));
1406 start_init ($<ttype>$, $2, global_bindings_p ()); }
1408 /* Note how the declaration of the variable is in effect while its init is parsed! */
1410 finish_decl ($<ttype>5, $6, $2); }
1411 | declarator maybeasm maybe_attribute
1412 { tree d = start_decl ($1, current_declspecs, 0,
1413 chainon ($3, all_prefix_attributes));
1414 finish_decl (d, NULL_TREE, $2);
1419 notype_declarator maybeasm maybe_attribute '='
1420 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1421 chainon ($3, all_prefix_attributes));
1422 start_init ($<ttype>$, $2, global_bindings_p ()); }
1424 /* Note how the declaration of the variable is in effect while its init is parsed! */
1426 finish_decl ($<ttype>5, $6, $2); }
1427 | notype_declarator maybeasm maybe_attribute
1428 { tree d = start_decl ($1, current_declspecs, 0,
1429 chainon ($3, all_prefix_attributes));
1430 finish_decl (d, NULL_TREE, $2); }
1432 /* the * rules are dummies to accept the Apollo extended syntax
1433 so that the header files compile. */
1444 | attributes attribute
1445 { $$ = chainon ($1, $2); }
1449 ATTRIBUTE '(' '(' attribute_list ')' ')'
1456 | attribute_list ',' attrib
1457 { $$ = chainon ($1, $3); }
1464 { $$ = build_tree_list ($1, NULL_TREE); }
1465 | any_word '(' IDENTIFIER ')'
1466 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1467 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1468 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1469 | any_word '(' exprlist ')'
1470 { $$ = build_tree_list ($1, $3); }
1473 /* This still leaves out most reserved keywords,
1474 shouldn't we include them? */
1488 /* Initializers. `init' is the entry point. */
1493 { really_start_incremental_init (NULL_TREE); }
1494 initlist_maybe_comma '}'
1495 { $$ = pop_init_level (0); }
1497 { $$ = error_mark_node; }
1500 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1501 initlist_maybe_comma:
1504 pedwarn ("ISO C forbids empty initializer braces"); }
1505 | initlist1 maybecomma
1510 | initlist1 ',' initelt
1513 /* `initelt' is a single element of an initializer.
1514 It may use braces. */
1516 designator_list '=' initval
1517 { if (pedantic && ! flag_isoc99)
1518 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1519 | designator initval
1521 pedwarn ("obsolete use of designated initializer without `='"); }
1523 { set_init_label ($1);
1525 pedwarn ("obsolete use of designated initializer with `:'"); }
1533 { push_init_level (0); }
1534 initlist_maybe_comma '}'
1535 { process_init_element (pop_init_level (0)); }
1537 { process_init_element ($1); }
1543 | designator_list designator
1548 { set_init_label ($2); }
1549 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1550 { set_init_index ($2, $4);
1552 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1553 | '[' expr_no_commas ']'
1554 { set_init_index ($2, NULL_TREE); }
1560 pedwarn ("ISO C forbids nested functions");
1562 push_function_context ();
1563 if (! start_function (current_declspecs, $1,
1564 all_prefix_attributes))
1566 pop_function_context ();
1569 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1571 old_style_parm_decls save_location
1572 { tree decl = current_function_decl;
1573 DECL_SOURCE_LOCATION (decl) = $4;
1574 store_parm_decls (); }
1575 /* This used to use compstmt_or_error.
1576 That caused a bug with input `f(g) int g {}',
1577 where the use of YYERROR1 above caused an error
1578 which then was handled by compstmt_or_error.
1579 There followed a repeated execution of that same rule,
1580 which called YYERROR1 again, and so on. */
1582 { tree decl = current_function_decl;
1584 pop_function_context ();
1585 add_decl_stmt (decl); }
1588 notype_nested_function:
1591 pedwarn ("ISO C forbids nested functions");
1593 push_function_context ();
1594 if (! start_function (current_declspecs, $1,
1595 all_prefix_attributes))
1597 pop_function_context ();
1600 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1602 old_style_parm_decls save_location
1603 { tree decl = current_function_decl;
1604 DECL_SOURCE_LOCATION (decl) = $4;
1605 store_parm_decls (); }
1606 /* This used to use compstmt_or_error.
1607 That caused a bug with input `f(g) int g {}',
1608 where the use of YYERROR1 above caused an error
1609 which then was handled by compstmt_or_error.
1610 There followed a repeated execution of that same rule,
1611 which called YYERROR1 again, and so on. */
1613 { tree decl = current_function_decl;
1615 pop_function_context ();
1616 add_decl_stmt (decl); }
1619 /* Any kind of declarator (thus, all declarators allowed
1620 after an explicit typespec). */
1623 after_type_declarator
1627 /* A declarator that is allowed only after an explicit typespec. */
1629 after_type_declarator:
1630 '(' maybe_attribute after_type_declarator ')'
1631 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1632 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1633 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1634 /* | after_type_declarator '(' error ')' %prec '.'
1635 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1636 poplevel (0, 0, 0); } */
1637 | after_type_declarator array_declarator %prec '.'
1638 { $$ = set_array_declarator_type ($2, $1, 0); }
1639 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1640 { $$ = make_pointer_declarator ($2, $3); }
1647 /* Kinds of declarator that can appear in a parameter list
1648 in addition to notype_declarator. This is like after_type_declarator
1649 but does not allow a typedef name in parentheses as an identifier
1650 (because it would conflict with a function with that typedef as arg). */
1652 parm_declarator_starttypename
1653 | parm_declarator_nostarttypename
1656 parm_declarator_starttypename:
1657 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_starttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1670 parm_declarator_nostarttypename:
1671 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1672 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1673 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1674 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1675 poplevel (0, 0, 0); } */
1676 | parm_declarator_nostarttypename array_declarator %prec '.'
1677 { $$ = set_array_declarator_type ($2, $1, 0); }
1678 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1679 { $$ = make_pointer_declarator ($2, $3); }
1680 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1681 { $$ = make_pointer_declarator ($2, $3); }
1682 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1683 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1686 /* A declarator allowed whether or not there has been
1687 an explicit typespec. These cannot redeclare a typedef-name. */
1690 notype_declarator '(' parmlist_or_identifiers %prec '.'
1691 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1692 /* | notype_declarator '(' error ')' %prec '.'
1693 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1694 poplevel (0, 0, 0); } */
1695 | '(' maybe_attribute notype_declarator ')'
1696 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1697 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1698 { $$ = make_pointer_declarator ($2, $3); }
1699 | notype_declarator array_declarator %prec '.'
1700 { $$ = set_array_declarator_type ($2, $1, 0); }
1725 /* structsp_attr: struct/union/enum specifiers that either
1726 end with attributes, or are such that any following attributes would
1727 be parsed as part of the struct/union/enum specifier.
1729 structsp_nonattr: other struct/union/enum specifiers. */
1732 struct_head identifier '{'
1733 { $$ = start_struct (RECORD_TYPE, $2);
1734 /* Start scope of tag before parsing components. */
1736 component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1738 chainon ($1, $7)); }
1739 | struct_head '{' component_decl_list '}' maybe_attribute
1740 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1741 nreverse ($3), chainon ($1, $5));
1743 | union_head identifier '{'
1744 { $$ = start_struct (UNION_TYPE, $2); }
1745 component_decl_list '}' maybe_attribute
1746 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1747 chainon ($1, $7)); }
1748 | union_head '{' component_decl_list '}' maybe_attribute
1749 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1750 nreverse ($3), chainon ($1, $5));
1752 | enum_head identifier '{'
1753 { $$ = start_enum ($2); }
1754 enumlist maybecomma_warn '}' maybe_attribute
1755 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1756 chainon ($1, $8)); }
1758 { $$ = start_enum (NULL_TREE); }
1759 enumlist maybecomma_warn '}' maybe_attribute
1760 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1761 chainon ($1, $7)); }
1765 struct_head identifier
1766 { $$ = xref_tag (RECORD_TYPE, $2); }
1767 | union_head identifier
1768 { $$ = xref_tag (UNION_TYPE, $2); }
1769 | enum_head identifier
1770 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1771 /* In ISO C, enumerated types can be referred to
1772 only if already defined. */
1773 if (pedantic && !COMPLETE_TYPE_P ($$))
1774 pedwarn ("ISO C forbids forward references to `enum' types"); }
1785 { if (pedantic && ! flag_isoc99)
1786 pedwarn ("comma at end of enumerator list"); }
1789 /* We chain the components in reverse order. They are put in forward
1790 order in structsp_attr.
1792 Note that component_declarator returns single decls, so components
1793 and components_notype can use TREE_CHAIN directly, wheras components
1794 and components_notype return lists (of comma separated decls), so
1795 component_decl_list and component_decl_list2 must use chainon.
1797 The theory behind all this is that there will be more semicolon
1798 separated fields than comma separated fields, and so we'll be
1799 minimizing the number of node traversals required by chainon. */
1801 component_decl_list:
1802 component_decl_list2
1804 | component_decl_list2 component_decl
1805 { $$ = chainon ($2, $1);
1806 pedwarn ("no semicolon at end of struct or union"); }
1809 component_decl_list2: /* empty */
1811 | component_decl_list2 component_decl ';'
1812 { $$ = chainon ($2, $1); }
1813 | component_decl_list2 ';'
1815 pedwarn ("extra semicolon in struct or union specified"); }
1817 /* foo(sizeof(struct{ @defs(ClassName)})); */
1818 | DEFS '(' CLASSNAME ')'
1819 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1824 declspecs_nosc_ts setspecs components
1826 POP_DECLSPEC_STACK; }
1827 | declspecs_nosc_ts setspecs
1829 /* Support for unnamed structs or unions as members of
1830 structs or unions (which is [a] useful and [b] supports
1833 pedwarn ("ISO C doesn't support unnamed structs/unions");
1835 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots setspecs components_notype
1839 POP_DECLSPEC_STACK; }
1840 | declspecs_nosc_nots
1842 pedwarn ("ISO C forbids member declarations with no members");
1843 shadow_tag_warned ($1, pedantic);
1847 | extension component_decl
1849 RESTORE_EXT_FLAGS ($1); }
1853 component_declarator
1854 | components ',' maybe_resetattrs component_declarator
1855 { TREE_CHAIN ($4) = $1; $$ = $4; }
1859 component_notype_declarator
1860 | components_notype ',' maybe_resetattrs component_notype_declarator
1861 { TREE_CHAIN ($4) = $1; $$ = $4; }
1864 component_declarator:
1865 declarator maybe_attribute
1866 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1867 decl_attributes (&$$,
1868 chainon ($2, all_prefix_attributes), 0); }
1869 | declarator ':' expr_no_commas maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, $3);
1871 decl_attributes (&$$,
1872 chainon ($4, all_prefix_attributes), 0); }
1873 | ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1875 decl_attributes (&$$,
1876 chainon ($3, all_prefix_attributes), 0); }
1879 component_notype_declarator:
1880 notype_declarator maybe_attribute
1881 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1882 decl_attributes (&$$,
1883 chainon ($2, all_prefix_attributes), 0); }
1884 | notype_declarator ':' expr_no_commas maybe_attribute
1885 { $$ = grokfield ($1, current_declspecs, $3);
1886 decl_attributes (&$$,
1887 chainon ($4, all_prefix_attributes), 0); }
1888 | ':' expr_no_commas maybe_attribute
1889 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1890 decl_attributes (&$$,
1891 chainon ($3, all_prefix_attributes), 0); }
1894 /* We chain the enumerators in reverse order.
1895 They are put in forward order in structsp_attr. */
1899 | enumlist ',' enumerator
1900 { if ($1 == error_mark_node)
1903 TREE_CHAIN ($3) = $1, $$ = $3; }
1905 { $$ = error_mark_node; }
1911 { $$ = build_enumerator ($1, NULL_TREE); }
1912 | identifier '=' expr_no_commas
1913 { $$ = build_enumerator ($1, $3); }
1918 { pending_xref_error ();
1921 { $$ = build_tree_list ($<ttype>2, $3); }
1924 absdcl: /* an absolute declarator */
1930 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1932 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 all_prefix_attributes); }
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 all_prefix_attributes); }
1939 | absdcl1_noea attributes
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1942 chainon ($2, all_prefix_attributes)); }
1945 absdcl1: /* a nonempty absolute declarator */
1952 | '*' maybe_type_quals_attrs absdcl1_noea
1953 { $$ = make_pointer_declarator ($2, $3); }
1957 '*' maybe_type_quals_attrs
1958 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1959 | '*' maybe_type_quals_attrs absdcl1_ea
1960 { $$ = make_pointer_declarator ($2, $3); }
1964 '(' maybe_attribute absdcl1 ')'
1965 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1966 | direct_absdcl1 '(' parmlist
1967 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1968 | direct_absdcl1 array_declarator
1969 { $$ = set_array_declarator_type ($2, $1, 1); }
1971 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1973 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1976 /* The [...] part of a declarator for an array type. */
1979 '[' maybe_type_quals_attrs expr_no_commas ']'
1980 { $$ = build_array_declarator ($3, $2, 0, 0); }
1981 | '[' maybe_type_quals_attrs ']'
1982 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1983 | '[' maybe_type_quals_attrs '*' ']'
1984 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1985 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1986 { $$ = build_array_declarator ($4, $3, 1, 0); }
1987 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1988 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1989 { $$ = build_array_declarator ($4, $2, 1, 0); }
1992 /* A nonempty series of declarations and statements (possibly followed by
1993 some labels) that can form the body of a compound statement.
1994 NOTE: we don't allow labels on declarations; this might seem like a
1995 natural extension, but there would be a conflict between attributes
1996 on the label and prefix attributes on the declaration. */
1999 lineno_stmt_decl_or_labels_ending_stmt
2000 | lineno_stmt_decl_or_labels_ending_decl
2001 | lineno_stmt_decl_or_labels_ending_label
2003 error ("label at end of compound statement");
2005 | lineno_stmt_decl_or_labels_ending_error
2008 lineno_stmt_decl_or_labels_ending_stmt:
2010 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2011 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2012 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2013 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2016 lineno_stmt_decl_or_labels_ending_decl:
2018 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2020 if ((pedantic && !flag_isoc99)
2021 || warn_declaration_after_statement)
2022 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2024 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2025 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2028 lineno_stmt_decl_or_labels_ending_label:
2030 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2031 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2032 | lineno_stmt_decl_or_labels_ending_label lineno_label
2033 | lineno_stmt_decl_or_labels_ending_error lineno_label
2036 lineno_stmt_decl_or_labels_ending_error:
2038 | lineno_stmt_decl_or_labels errstmt
2041 lineno_stmt_decl_or_labels:
2042 lineno_stmt_decl_or_labels_ending_stmt
2043 | lineno_stmt_decl_or_labels_ending_decl
2044 | lineno_stmt_decl_or_labels_ending_label
2045 | lineno_stmt_decl_or_labels_ending_error
2051 pushlevel: /* empty */
2054 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2058 poplevel: /* empty */
2061 if (c_dialect_objc ())
2062 objc_clear_super_receiver ();
2064 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2068 /* Start and end blocks created for the new scopes of C99. */
2069 c99_block_start: /* empty */
2072 $$ = c_begin_compound_stmt ();
2075 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2082 /* Productions using c99_block_start and c99_block_end will need to do what's
2083 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2084 $1 is the value of c99_block_start and $2 of c99_block_end. */
2085 c99_block_end: /* empty */
2088 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2089 $$ = poplevel (KEEP_MAYBE, 0, 0);
2090 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2091 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2098 /* Read zero or more forward-declarations for labels
2099 that nested functions can jump to. */
2104 pedwarn ("ISO C forbids label declarations"); }
2109 | label_decls label_decl
2113 LABEL identifiers_or_typenames ';'
2115 for (link = $2; link; link = TREE_CHAIN (link))
2117 tree label = declare_label (TREE_VALUE (link));
2118 C_DECLARED_LABEL_FLAG (label) = 1;
2119 add_decl_stmt (label);
2124 /* This is the body of a function definition.
2125 It causes syntax errors to ignore to the next openbrace. */
2132 compstmt_start: '{' { compstmt_count++;
2133 $$ = c_begin_compound_stmt (); }
2136 compstmt_nostart: '}'
2137 { $$ = convert (void_type_node, integer_zero_node); }
2138 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2139 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2140 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2141 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2145 compstmt_contents_nonempty:
2150 compstmt_primary_start:
2152 { if (current_function_decl == 0)
2154 error ("braced-group within expression allowed only inside a function");
2157 /* We must force a BLOCK for this level
2158 so that, if it is not expanded later,
2159 there is a way to turn off the entire subtree of blocks
2160 that are contained in it. */
2163 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2167 compstmt: compstmt_start compstmt_nostart
2168 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2169 last_expr_type = NULL_TREE;
2173 /* Value is number of statements counted as of the closeparen. */
2175 if_prefix c99_block_lineno_labeled_stmt
2176 { c_finish_then (); }
2177 /* Make sure c_expand_end_cond is run once
2178 for each call to c_expand_start_cond.
2179 Otherwise a crash is likely. */
2184 /* We must build the IF_STMT node before parsing its
2185 condition so that STMT_LINENO refers to the line
2186 containing the "if", and not the line containing
2187 the close-parenthesis.
2189 c_begin_if_stmt returns the IF_STMT node, which
2190 we later pass to c_expand_start_cond to fill
2191 in the condition and other tidbits. */
2193 { $<ttype>$ = c_begin_if_stmt (); }
2195 { c_expand_start_cond ((*lang_hooks.truthvalue_conversion) ($4),
2196 compstmt_count,$<ttype>2);
2197 $<itype>$ = stmt_count;
2198 if_stmt_locus = $<location>-1; }
2201 /* This is a subroutine of stmt.
2202 It is used twice, once for valid DO statements
2203 and once for catching errors in parsing the end test. */
2208 c_in_iteration_stmt++;
2210 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2212 /* In the event that a parse error prevents
2213 parsing the complete do-statement, set the
2214 condition now. Otherwise, we can get crashes at
2215 RTL-generation time. */
2216 DO_COND ($<ttype>$) = error_mark_node; }
2217 c99_block_lineno_labeled_stmt WHILE
2219 RECHAIN_STMTS ($$, DO_BODY ($$));
2220 c_in_iteration_stmt--; }
2223 /* The forced readahead in here is because we might be at the end of a
2224 line, and the line and file won't be bumped until yylex absorbs the
2225 first token on the next line. */
2228 { if (yychar == YYEMPTY)
2230 $$ = input_location; }
2233 lineno_labeled_stmt:
2235 | lineno_label lineno_labeled_stmt
2238 /* Like lineno_labeled_stmt, but a block in C99. */
2239 c99_block_lineno_labeled_stmt:
2240 c99_block_start lineno_labeled_stmt c99_block_end
2242 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2249 STMT_LINENO ($2) = $1.line;
2250 /* ??? We currently have no way of recording
2251 the filename for a statement. This probably
2252 matters little in practice at the moment,
2253 but I suspect that problems will occur when
2254 doing inlining at the tree level. */
2263 STMT_LINENO ($2) = $1.line;
2268 select_or_iter_stmt:
2270 { c_expand_start_else ();
2271 $<itype>1 = stmt_count; }
2272 c99_block_lineno_labeled_stmt
2274 c_expand_end_cond ();
2275 if (extra_warnings && stmt_count == $<itype>1)
2276 warning ("empty body in an else-statement"); }
2277 | simple_if %prec IF
2278 { c_expand_end_cond ();
2279 /* This warning is here instead of in simple_if, because we
2280 do not want a warning if an empty if is followed by an
2281 else statement. Increment stmt_count so we don't
2282 give a second error if this is a nested `if'. */
2283 if (extra_warnings && stmt_count++ == $<itype>1)
2284 warning ("%Hempty body in an if-statement",
2286 /* Make sure c_expand_end_cond is run once
2287 for each call to c_expand_start_cond.
2288 Otherwise a crash is likely. */
2289 | simple_if ELSE error
2290 { c_expand_end_cond (); }
2291 /* We must build the WHILE_STMT node before parsing its
2292 condition so that STMT_LINENO refers to the line
2293 containing the "while", and not the line containing
2294 the close-parenthesis.
2296 c_begin_while_stmt returns the WHILE_STMT node, which
2297 we later pass to c_finish_while_stmt_cond to fill
2298 in the condition and other tidbits. */
2301 $<ttype>$ = c_begin_while_stmt (); }
2303 { c_in_iteration_stmt++;
2304 $4 = (*lang_hooks.truthvalue_conversion) ($4);
2305 c_finish_while_stmt_cond
2306 ((*lang_hooks.truthvalue_conversion) ($4), $<ttype>2);
2307 $<ttype>$ = add_stmt ($<ttype>2); }
2308 c99_block_lineno_labeled_stmt
2309 { c_in_iteration_stmt--;
2310 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2313 { DO_COND ($1) = (*lang_hooks.truthvalue_conversion) ($3); }
2314 | do_stmt_start error
2317 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2318 NULL_TREE, NULL_TREE);
2319 add_stmt ($<ttype>$); }
2322 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2325 FOR_COND ($<ttype>2)
2326 = (*lang_hooks.truthvalue_conversion) ($6); }
2328 { c_in_iteration_stmt++;
2329 FOR_EXPR ($<ttype>2) = $9; }
2330 c99_block_lineno_labeled_stmt
2331 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2332 c_in_iteration_stmt--;}
2333 | SWITCH '(' expr ')'
2335 $<ttype>$ = c_start_case ($3);
2337 c99_block_lineno_labeled_stmt
2344 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2346 { check_for_loop_decls (); }
2349 /* Parse a single real statement, not including any labels. */
2352 { stmt_count++; $$ = $1; }
2355 $$ = c_expand_expr_stmt ($1); }
2356 | c99_block_start select_or_iter_stmt c99_block_end
2358 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2362 if (!(c_in_iteration_stmt || c_in_case_stmt))
2364 error ("break statement not within loop or switch");
2368 $$ = add_stmt (build_break_stmt ()); }
2371 if (!c_in_iteration_stmt)
2373 error ("continue statement not within a loop");
2377 $$ = add_stmt (build_continue_stmt ()); }
2380 $$ = c_expand_return (NULL_TREE); }
2383 $$ = c_expand_return ($2); }
2384 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2386 $$ = simple_asm_stmt ($4); }
2387 /* This is the case with just output operands. */
2388 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2390 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2391 /* This is the case with input operands as well. */
2392 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2393 asm_operands ')' ';'
2395 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2396 /* This is the case with clobbered registers as well. */
2397 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2398 asm_operands ':' asm_clobbers ')' ';'
2400 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2401 | GOTO identifier ';'
2404 decl = lookup_label ($2);
2407 TREE_USED (decl) = 1;
2408 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2415 pedwarn ("ISO C forbids `goto *expr;'");
2417 $3 = convert (ptr_type_node, $3);
2418 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2424 $$ = objc_build_throw_stmt ($2);
2428 $$ = objc_build_throw_stmt (NULL_TREE);
2430 | objc_try_catch_stmt
2431 { objc_build_finally_prologue (); }
2433 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2434 | AT_SYNCHRONIZED '(' expr ')'
2435 { objc_build_synchronized_prologue ($3); }
2437 { $$ = objc_build_synchronized_epilogue (); }
2440 objc_try_catch_stmt:
2442 { objc_build_try_epilogue (1); }
2444 { objc_build_catch_epilogue (); $$ = 1; }
2446 { objc_build_try_epilogue (0); $$ = 0; }
2452 { objc_build_try_prologue (); }
2457 objc_catch_list objc_catch_block
2462 AT_CATCH '(' parm ')'
2463 { objc_build_catch_stmt ($3); }
2476 /* Any kind of label, including jump labels and case labels.
2477 ANSI C accepts labels only before statements, but we allow them
2478 also at the end of a compound statement. */
2480 label: CASE expr_no_commas ':'
2482 $$ = do_case ($2, NULL_TREE); }
2483 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2485 $$ = do_case ($2, $4); }
2488 $$ = do_case (NULL_TREE, NULL_TREE); }
2489 | identifier save_location ':' maybe_attribute
2490 { tree label = define_label ($2, $1);
2494 decl_attributes (&label, $4, 0);
2495 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2502 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2517 /* These are the operands other than the first string and colon
2518 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2519 asm_operands: /* empty */
2521 | nonnull_asm_operands
2524 nonnull_asm_operands:
2526 | nonnull_asm_operands ',' asm_operand
2527 { $$ = chainon ($1, $3); }
2532 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2533 | '[' identifier ']' STRING '(' expr ')'
2534 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2535 IDENTIFIER_POINTER ($2));
2536 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2541 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2542 | asm_clobbers ',' STRING
2543 { $$ = tree_cons (NULL_TREE, $3, $1); }
2546 /* This is what appears inside the parens in a function declarator.
2547 Its value is a list of ..._TYPE nodes. Attributes must appear here
2548 to avoid a conflict with their appearance after an open parenthesis
2549 in an abstract declarator, as in
2550 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2554 declare_parm_level (); }
2557 poplevel (0, 0, 0); }
2563 { mark_forward_parm_decls (); }
2565 { /* Dummy action so attributes are in known place
2566 on parser stack. */ }
2570 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2573 /* This is what appears inside the parens in a function declarator.
2574 Is value is represented in the format that grokdeclarator expects. */
2575 parmlist_2: /* empty */
2576 { $$ = get_parm_info (0); }
2578 { $$ = get_parm_info (0);
2579 /* Gcc used to allow this as an extension. However, it does
2580 not work for all targets, and thus has been disabled.
2581 Also, since func (...) and func () are indistinguishable,
2582 it caused problems with the code in expand_builtin which
2583 tries to verify that BUILT_IN_NEXT_ARG is being used
2585 error ("ISO C requires a named argument before `...'");
2586 parsing_iso_function_signature = true;
2589 { $$ = get_parm_info (1);
2590 parsing_iso_function_signature = true;
2592 | parms ',' ELLIPSIS
2593 { $$ = get_parm_info (0);
2594 parsing_iso_function_signature = true;
2600 { push_parm_decl ($1); }
2602 { push_parm_decl ($3); }
2605 /* A single parameter declaration or parameter type name,
2606 as found in a parmlist. */
2608 declspecs_ts setspecs parm_declarator maybe_attribute
2609 { $$ = build_tree_list (build_tree_list (current_declspecs,
2611 chainon ($4, all_prefix_attributes));
2612 POP_DECLSPEC_STACK; }
2613 | declspecs_ts setspecs notype_declarator maybe_attribute
2614 { $$ = build_tree_list (build_tree_list (current_declspecs,
2616 chainon ($4, all_prefix_attributes));
2617 POP_DECLSPEC_STACK; }
2618 | declspecs_ts setspecs absdcl_maybe_attribute
2620 POP_DECLSPEC_STACK; }
2621 | declspecs_nots setspecs notype_declarator maybe_attribute
2622 { $$ = build_tree_list (build_tree_list (current_declspecs,
2624 chainon ($4, all_prefix_attributes));
2625 POP_DECLSPEC_STACK; }
2627 | declspecs_nots setspecs absdcl_maybe_attribute
2629 POP_DECLSPEC_STACK; }
2632 /* The first parm, which must suck attributes from off the top of the parser
2635 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2636 { $$ = build_tree_list (build_tree_list (current_declspecs,
2638 chainon ($4, all_prefix_attributes));
2639 POP_DECLSPEC_STACK; }
2640 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2641 { $$ = build_tree_list (build_tree_list (current_declspecs,
2643 chainon ($4, all_prefix_attributes));
2644 POP_DECLSPEC_STACK; }
2645 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2647 POP_DECLSPEC_STACK; }
2648 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2649 { $$ = build_tree_list (build_tree_list (current_declspecs,
2651 chainon ($4, all_prefix_attributes));
2652 POP_DECLSPEC_STACK; }
2654 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2656 POP_DECLSPEC_STACK; }
2661 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2662 all_prefix_attributes = prefix_attributes; }
2665 /* This is used in a function definition
2666 where either a parmlist or an identifier list is ok.
2667 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2668 parmlist_or_identifiers:
2671 declare_parm_level (); }
2672 parmlist_or_identifiers_1
2674 poplevel (0, 0, 0); }
2677 parmlist_or_identifiers_1:
2681 for (t = $1; t; t = TREE_CHAIN (t))
2682 if (TREE_VALUE (t) == NULL_TREE)
2683 error ("`...' in old-style identifier list");
2684 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2686 /* Make sure we have a parmlist after attributes. */
2688 && (TREE_CODE ($$) != TREE_LIST
2689 || TREE_PURPOSE ($$) == 0
2690 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2695 /* A nonempty list of identifiers. */
2698 { $$ = build_tree_list (NULL_TREE, $1); }
2699 | identifiers ',' IDENTIFIER
2700 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2703 /* A nonempty list of identifiers, including typenames. */
2704 identifiers_or_typenames:
2706 { $$ = build_tree_list (NULL_TREE, $1); }
2707 | identifiers_or_typenames ',' identifier
2708 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2713 { $$ = SAVE_EXT_FLAGS();
2715 warn_pointer_arith = 0;
2716 warn_traditional = 0;
2721 /* Objective-C productions. */
2731 if (objc_implementation_context)
2733 finish_class (objc_implementation_context);
2734 objc_ivar_chain = NULL_TREE;
2735 objc_implementation_context = NULL_TREE;
2738 warning ("`@end' must appear in an implementation context");
2742 /* A nonempty list of identifiers. */
2745 { $$ = build_tree_list (NULL_TREE, $1); }
2746 | identifier_list ',' identifier
2747 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2751 CLASS identifier_list ';'
2753 objc_declare_class ($2);
2758 ALIAS identifier identifier ';'
2760 objc_declare_alias ($2, $3);
2765 ':' identifier { $$ = $2; }
2766 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2770 '{' ivar_decl_list '}'
2775 INTERFACE identifier superclass protocolrefs
2777 objc_interface_context = objc_ivar_context
2778 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2779 objc_public_flag = 0;
2783 continue_class (objc_interface_context);
2787 finish_class (objc_interface_context);
2788 objc_interface_context = NULL_TREE;
2791 | IMPLEMENTATION identifier superclass
2793 objc_implementation_context = objc_ivar_context
2794 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2795 objc_public_flag = 0;
2800 = continue_class (objc_implementation_context);
2803 | INTERFACE identifier '(' identifier ')' protocolrefs
2805 objc_interface_context
2806 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2807 continue_class (objc_interface_context);
2811 finish_class (objc_interface_context);
2812 objc_interface_context = NULL_TREE;
2815 | IMPLEMENTATION identifier '(' identifier ')'
2817 objc_implementation_context
2818 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2820 = continue_class (objc_implementation_context);
2825 PROTOCOL identifier protocolrefs
2827 objc_pq_context = 1;
2828 objc_interface_context
2829 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2833 objc_pq_context = 0;
2834 finish_protocol(objc_interface_context);
2835 objc_interface_context = NULL_TREE;
2837 /* The @protocol forward-declaration production introduces a
2838 reduce/reduce conflict on ';', which should be resolved in
2839 favor of the production 'identifier_list -> identifier'. */
2840 | PROTOCOL identifier_list ';'
2842 objc_declare_protocols ($2);
2851 | non_empty_protocolrefs
2854 non_empty_protocolrefs:
2855 ARITHCOMPARE identifier_list ARITHCOMPARE
2857 if ($1 == LT_EXPR && $3 == GT_EXPR)
2865 ivar_decl_list visibility_spec ivar_decls
2870 PRIVATE { objc_public_flag = 2; }
2871 | PROTECTED { objc_public_flag = 0; }
2872 | PUBLIC { objc_public_flag = 1; }
2880 | ivar_decls ivar_decl ';'
2884 pedwarn ("extra semicolon in struct or union specified");
2889 /* There is a shift-reduce conflict here, because `components' may
2890 start with a `typename'. It happens that shifting (the default resolution)
2891 does the right thing, because it treats the `typename' as part of
2892 a `typed_typespecs'.
2894 It is possible that this same technique would allow the distinction
2895 between `notype_initdecls' and `initdecls' to be eliminated.
2896 But I am being cautious and not trying it. */
2899 declspecs_nosc_ts setspecs ivars
2901 POP_DECLSPEC_STACK; }
2902 | declspecs_nosc_nots setspecs ivars
2904 POP_DECLSPEC_STACK; }
2913 | ivars ',' maybe_resetattrs ivar_declarator
2919 $$ = add_instance_variable (objc_ivar_context,
2921 $1, current_declspecs,
2924 | declarator ':' expr_no_commas
2926 $$ = add_instance_variable (objc_ivar_context,
2928 $1, current_declspecs, $3);
2930 | ':' expr_no_commas
2932 $$ = add_instance_variable (objc_ivar_context,
2935 current_declspecs, $2);
2941 { objc_inherit_code = CLASS_METHOD_DECL; }
2943 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2949 objc_pq_context = 1;
2950 if (!objc_implementation_context)
2951 fatal_error ("method definition not in class context");
2955 objc_pq_context = 0;
2956 objc_add_method (objc_implementation_context,
2958 objc_inherit_code == CLASS_METHOD_DECL);
2959 start_method_def ($3);
2963 continue_method_def ();
2967 finish_method_def ();
2971 /* the reason for the strange actions in this rule
2972 is so that notype_initdecls when reached via datadef
2973 can find a valid list of type and sc specs in $0. */
2977 | methodprotolist methodproto
2978 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2989 /* Remember protocol qualifiers in prototypes. */
2990 objc_pq_context = 1;
2994 /* Forget protocol qualifiers here. */
2995 objc_pq_context = 0;
2996 objc_add_method (objc_interface_context,
2998 objc_inherit_code == CLASS_METHOD_DECL);
3004 '(' typename ')' unaryselector
3006 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3011 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3014 | '(' typename ')' keywordselector optparmlist
3016 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3019 | keywordselector optparmlist
3021 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3025 /* "optarglist" assumes that start_method_def has already been called...
3026 if it is not, the "xdecls" will not be placed in the proper scope */
3033 /* to get around the following situation: "int foo (int a) int b; {}" that
3034 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3049 declspecs_ts setspecs myparms ';'
3050 { POP_DECLSPEC_STACK; }
3052 { shadow_tag ($1); }
3053 | declspecs_nots ';'
3054 { pedwarn ("empty declaration"); }
3059 { push_parm_decl ($1); }
3060 | myparms ',' myparm
3061 { push_parm_decl ($3); }
3064 /* A single parameter declaration or parameter type name,
3065 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3068 parm_declarator maybe_attribute
3069 { $$ = build_tree_list (build_tree_list (current_declspecs,
3071 chainon ($2, all_prefix_attributes)); }
3072 | notype_declarator maybe_attribute
3073 { $$ = build_tree_list (build_tree_list (current_declspecs,
3075 chainon ($2, all_prefix_attributes)); }
3076 | absdcl_maybe_attribute
3087 /* oh what a kludge! */
3088 $$ = objc_ellipsis_node;
3096 /* returns a tree list node generated by get_parm_info */
3109 | keywordselector keyworddecl
3111 $$ = chainon ($1, $2);
3124 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3125 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3126 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3127 | TYPESPEC | TYPE_QUAL
3131 selector ':' '(' typename ')' identifier
3133 $$ = build_keyword_decl ($1, $4, $6);
3136 | selector ':' identifier
3138 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3141 | ':' '(' typename ')' identifier
3143 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3148 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3159 | keywordarglist keywordarg
3161 $$ = chainon ($1, $2);
3169 if (TREE_CHAIN ($1) == NULL_TREE)
3170 /* just return the expr., remove a level of indirection */
3171 $$ = TREE_VALUE ($1);
3173 /* we have a comma expr., we will collapse later */
3179 selector ':' keywordexpr
3181 $$ = build_tree_list ($1, $3);
3185 $$ = build_tree_list (NULL_TREE, $2);
3193 $$ = get_class_reference ($1);
3197 $$ = get_class_reference ($1);
3202 '[' receiver messageargs ']'
3203 { $$ = build_tree_list ($2, $3); }
3213 | keywordnamelist keywordname
3215 $$ = chainon ($1, $2);
3222 $$ = build_tree_list ($1, NULL_TREE);
3226 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3231 SELECTOR '(' selectorarg ')'
3238 PROTOCOL '(' identifier ')'
3244 /* extension to support C-structures in the archiver */
3247 ENCODE '(' typename ')'
3249 $$ = groktypename ($3);
3256 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3257 cpplib.h's token codes into yacc's token codes. */
3259 static enum cpp_ttype last_token;
3261 /* The reserved keyword table. */
3265 ENUM_BITFIELD(rid) rid : 16;
3266 unsigned int disable : 16;
3269 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3271 #define D_C89 0x01 /* not in C89 */
3272 #define D_EXT 0x02 /* GCC extension */
3273 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3274 #define D_OBJC 0x08 /* Objective C only */
3276 static const struct resword reswords[] =
3278 { "_Bool", RID_BOOL, 0 },
3279 { "_Complex", RID_COMPLEX, 0 },
3280 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3281 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3282 { "__alignof", RID_ALIGNOF, 0 },
3283 { "__alignof__", RID_ALIGNOF, 0 },
3284 { "__asm", RID_ASM, 0 },
3285 { "__asm__", RID_ASM, 0 },
3286 { "__attribute", RID_ATTRIBUTE, 0 },
3287 { "__attribute__", RID_ATTRIBUTE, 0 },
3288 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3289 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3290 { "__builtin_va_arg", RID_VA_ARG, 0 },
3291 { "__complex", RID_COMPLEX, 0 },
3292 { "__complex__", RID_COMPLEX, 0 },
3293 { "__const", RID_CONST, 0 },
3294 { "__const__", RID_CONST, 0 },
3295 { "__extension__", RID_EXTENSION, 0 },
3296 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3297 { "__imag", RID_IMAGPART, 0 },
3298 { "__imag__", RID_IMAGPART, 0 },
3299 { "__inline", RID_INLINE, 0 },
3300 { "__inline__", RID_INLINE, 0 },
3301 { "__label__", RID_LABEL, 0 },
3302 { "__ptrbase", RID_PTRBASE, 0 },
3303 { "__ptrbase__", RID_PTRBASE, 0 },
3304 { "__ptrextent", RID_PTREXTENT, 0 },
3305 { "__ptrextent__", RID_PTREXTENT, 0 },
3306 { "__ptrvalue", RID_PTRVALUE, 0 },
3307 { "__ptrvalue__", RID_PTRVALUE, 0 },
3308 { "__real", RID_REALPART, 0 },
3309 { "__real__", RID_REALPART, 0 },
3310 { "__restrict", RID_RESTRICT, 0 },
3311 { "__restrict__", RID_RESTRICT, 0 },
3312 { "__signed", RID_SIGNED, 0 },
3313 { "__signed__", RID_SIGNED, 0 },
3314 { "__thread", RID_THREAD, 0 },
3315 { "__typeof", RID_TYPEOF, 0 },
3316 { "__typeof__", RID_TYPEOF, 0 },
3317 { "__volatile", RID_VOLATILE, 0 },
3318 { "__volatile__", RID_VOLATILE, 0 },
3319 { "asm", RID_ASM, D_EXT },
3320 { "auto", RID_AUTO, 0 },
3321 { "break", RID_BREAK, 0 },
3322 { "case", RID_CASE, 0 },
3323 { "char", RID_CHAR, 0 },
3324 { "const", RID_CONST, 0 },
3325 { "continue", RID_CONTINUE, 0 },
3326 { "default", RID_DEFAULT, 0 },
3327 { "do", RID_DO, 0 },
3328 { "double", RID_DOUBLE, 0 },
3329 { "else", RID_ELSE, 0 },
3330 { "enum", RID_ENUM, 0 },
3331 { "extern", RID_EXTERN, 0 },
3332 { "float", RID_FLOAT, 0 },
3333 { "for", RID_FOR, 0 },
3334 { "goto", RID_GOTO, 0 },
3335 { "if", RID_IF, 0 },
3336 { "inline", RID_INLINE, D_EXT89 },
3337 { "int", RID_INT, 0 },
3338 { "long", RID_LONG, 0 },
3339 { "register", RID_REGISTER, 0 },
3340 { "restrict", RID_RESTRICT, D_C89 },
3341 { "return", RID_RETURN, 0 },
3342 { "short", RID_SHORT, 0 },
3343 { "signed", RID_SIGNED, 0 },
3344 { "sizeof", RID_SIZEOF, 0 },
3345 { "static", RID_STATIC, 0 },
3346 { "struct", RID_STRUCT, 0 },
3347 { "switch", RID_SWITCH, 0 },
3348 { "typedef", RID_TYPEDEF, 0 },
3349 { "typeof", RID_TYPEOF, D_EXT },
3350 { "union", RID_UNION, 0 },
3351 { "unsigned", RID_UNSIGNED, 0 },
3352 { "void", RID_VOID, 0 },
3353 { "volatile", RID_VOLATILE, 0 },
3354 { "while", RID_WHILE, 0 },
3356 { "id", RID_ID, D_OBJC },
3358 /* These objc keywords are recognized only immediately after
3360 { "class", RID_AT_CLASS, D_OBJC },
3361 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3362 { "defs", RID_AT_DEFS, D_OBJC },
3363 { "encode", RID_AT_ENCODE, D_OBJC },
3364 { "end", RID_AT_END, D_OBJC },
3365 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3366 { "interface", RID_AT_INTERFACE, D_OBJC },
3367 { "private", RID_AT_PRIVATE, D_OBJC },
3368 { "protected", RID_AT_PROTECTED, D_OBJC },
3369 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3370 { "public", RID_AT_PUBLIC, D_OBJC },
3371 { "selector", RID_AT_SELECTOR, D_OBJC },
3372 { "throw", RID_AT_THROW, D_OBJC },
3373 { "try", RID_AT_TRY, D_OBJC },
3374 { "catch", RID_AT_CATCH, D_OBJC },
3375 { "finally", RID_AT_FINALLY, D_OBJC },
3376 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3377 /* These are recognized only in protocol-qualifier context
3379 { "bycopy", RID_BYCOPY, D_OBJC },
3380 { "byref", RID_BYREF, D_OBJC },
3381 { "in", RID_IN, D_OBJC },
3382 { "inout", RID_INOUT, D_OBJC },
3383 { "oneway", RID_ONEWAY, D_OBJC },
3384 { "out", RID_OUT, D_OBJC },
3387 #define N_reswords (sizeof reswords / sizeof (struct resword))
3389 /* Table mapping from RID_* constants to yacc token numbers.
3390 Unfortunately we have to have entries for all the keywords in all
3392 static const short rid_to_yy[RID_MAX] =
3394 /* RID_STATIC */ STATIC,
3395 /* RID_UNSIGNED */ TYPESPEC,
3396 /* RID_LONG */ TYPESPEC,
3397 /* RID_CONST */ TYPE_QUAL,
3398 /* RID_EXTERN */ SCSPEC,
3399 /* RID_REGISTER */ SCSPEC,
3400 /* RID_TYPEDEF */ SCSPEC,
3401 /* RID_SHORT */ TYPESPEC,
3402 /* RID_INLINE */ SCSPEC,
3403 /* RID_VOLATILE */ TYPE_QUAL,
3404 /* RID_SIGNED */ TYPESPEC,
3405 /* RID_AUTO */ SCSPEC,
3406 /* RID_RESTRICT */ TYPE_QUAL,
3409 /* RID_COMPLEX */ TYPESPEC,
3410 /* RID_THREAD */ SCSPEC,
3414 /* RID_VIRTUAL */ 0,
3415 /* RID_EXPLICIT */ 0,
3417 /* RID_MUTABLE */ 0,
3420 /* RID_IN */ TYPE_QUAL,
3421 /* RID_OUT */ TYPE_QUAL,
3422 /* RID_INOUT */ TYPE_QUAL,
3423 /* RID_BYCOPY */ TYPE_QUAL,
3424 /* RID_BYREF */ TYPE_QUAL,
3425 /* RID_ONEWAY */ TYPE_QUAL,
3428 /* RID_INT */ TYPESPEC,
3429 /* RID_CHAR */ TYPESPEC,
3430 /* RID_FLOAT */ TYPESPEC,
3431 /* RID_DOUBLE */ TYPESPEC,
3432 /* RID_VOID */ TYPESPEC,
3433 /* RID_ENUM */ ENUM,
3434 /* RID_STRUCT */ STRUCT,
3435 /* RID_UNION */ UNION,
3437 /* RID_ELSE */ ELSE,
3438 /* RID_WHILE */ WHILE,
3441 /* RID_SWITCH */ SWITCH,
3442 /* RID_CASE */ CASE,
3443 /* RID_DEFAULT */ DEFAULT,
3444 /* RID_BREAK */ BREAK,
3445 /* RID_CONTINUE */ CONTINUE,
3446 /* RID_RETURN */ RETURN,
3447 /* RID_GOTO */ GOTO,
3448 /* RID_SIZEOF */ SIZEOF,
3451 /* RID_ASM */ ASM_KEYWORD,
3452 /* RID_TYPEOF */ TYPEOF,
3453 /* RID_ALIGNOF */ ALIGNOF,
3454 /* RID_ATTRIBUTE */ ATTRIBUTE,
3455 /* RID_VA_ARG */ VA_ARG,
3456 /* RID_EXTENSION */ EXTENSION,
3457 /* RID_IMAGPART */ IMAGPART,
3458 /* RID_REALPART */ REALPART,
3459 /* RID_LABEL */ LABEL,
3460 /* RID_PTRBASE */ PTR_BASE,
3461 /* RID_PTREXTENT */ PTR_EXTENT,
3462 /* RID_PTRVALUE */ PTR_VALUE,
3464 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3465 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3467 /* RID_FUNCTION_NAME */ FUNC_NAME,
3468 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3469 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3472 /* RID_BOOL */ TYPESPEC,
3476 /* RID_PRIVATE */ 0,
3477 /* RID_PROTECTED */ 0,
3478 /* RID_TEMPLATE */ 0,
3483 /* RID_NAMESPACE */ 0,
3485 /* RID_OFFSETOF */ 0,
3486 /* RID_OPERATOR */ 0,
3491 /* RID_TYPENAME */ 0,
3496 /* RID_CONSTCAST */ 0,
3497 /* RID_DYNCAST */ 0,
3498 /* RID_REINTCAST */ 0,
3499 /* RID_STATCAST */ 0,
3502 /* RID_ID */ OBJECTNAME,
3503 /* RID_AT_ENCODE */ ENCODE,
3504 /* RID_AT_END */ END,
3505 /* RID_AT_CLASS */ CLASS,
3506 /* RID_AT_ALIAS */ ALIAS,
3507 /* RID_AT_DEFS */ DEFS,
3508 /* RID_AT_PRIVATE */ PRIVATE,
3509 /* RID_AT_PROTECTED */ PROTECTED,
3510 /* RID_AT_PUBLIC */ PUBLIC,
3511 /* RID_AT_PROTOCOL */ PROTOCOL,
3512 /* RID_AT_SELECTOR */ SELECTOR,
3513 /* RID_AT_THROW */ AT_THROW,
3514 /* RID_AT_TRY */ AT_TRY,
3515 /* RID_AT_CATCH */ AT_CATCH,
3516 /* RID_AT_FINALLY */ AT_FINALLY,
3517 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3518 /* RID_AT_INTERFACE */ INTERFACE,
3519 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3523 init_reswords (void)
3527 int mask = (flag_isoc99 ? 0 : D_C89)
3528 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3530 if (!c_dialect_objc ())
3533 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3534 for (i = 0; i < N_reswords; i++)
3536 /* If a keyword is disabled, do not enter it into the table
3537 and so create a canonical spelling that isn't a keyword. */
3538 if (reswords[i].disable & mask)
3541 id = get_identifier (reswords[i].word);
3542 C_RID_CODE (id) = reswords[i].rid;
3543 C_IS_RESERVED_WORD (id) = 1;
3544 ridpointers [(int) reswords[i].rid] = id;
3548 #define NAME(type) cpp_type2name (type)
3551 yyerror (const char *msgid)
3553 c_parse_error (msgid, last_token, yylval.ttype);
3562 int objc_force_identifier = objc_need_raw_identifier;
3563 OBJC_NEED_RAW_IDENTIFIER (0);
3566 if (C_IS_RESERVED_WORD (yylval.ttype))
3568 enum rid rid_code = C_RID_CODE (yylval.ttype);
3571 /* Turn non-typedefed refs to "id" into plain identifiers; this
3572 allows constructs like "void foo(id id);" to work. */
3573 if (rid_code == RID_ID)
3575 decl = lookup_name (yylval.ttype);
3576 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3580 if (!OBJC_IS_AT_KEYWORD (rid_code)
3581 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3584 /* Return the canonical spelling for this keyword. */
3585 yylval.ttype = ridpointers[(int) rid_code];
3586 return rid_to_yy[(int) rid_code];
3590 decl = lookup_name (yylval.ttype);
3593 if (TREE_CODE (decl) == TYPE_DECL)
3599 tree objc_interface_decl = is_class_name (yylval.ttype);
3600 /* ObjC class names are in the same namespace as variables and
3601 typedefs, and hence are shadowed by local declarations. */
3602 if (objc_interface_decl
3603 && (global_bindings_p ()
3604 || (!objc_force_identifier && !decl)))
3606 yylval.ttype = objc_interface_decl;
3619 last_token = c_lex (&yylval.ttype);
3622 case CPP_EQ: return '=';
3623 case CPP_NOT: return '!';
3624 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3625 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3626 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3627 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3628 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3629 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3630 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3631 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3632 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3633 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3634 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3635 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3637 case CPP_COMPL: return '~';
3638 case CPP_AND_AND: return ANDAND;
3639 case CPP_OR_OR: return OROR;
3640 case CPP_QUERY: return '?';
3641 case CPP_OPEN_PAREN: return '(';
3642 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3643 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3644 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3645 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3647 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3648 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3649 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3650 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3651 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3652 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3653 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3654 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3655 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3656 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3658 case CPP_OPEN_SQUARE: return '[';
3659 case CPP_CLOSE_SQUARE: return ']';
3660 case CPP_OPEN_BRACE: return '{';
3661 case CPP_CLOSE_BRACE: return '}';
3662 case CPP_ELLIPSIS: return ELLIPSIS;
3664 case CPP_PLUS_PLUS: return PLUSPLUS;
3665 case CPP_MINUS_MINUS: return MINUSMINUS;
3666 case CPP_DEREF: return POINTSAT;
3667 case CPP_DOT: return '.';
3669 /* The following tokens may affect the interpretation of any
3670 identifiers following, if doing Objective-C. */
3671 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3672 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3673 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3674 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3680 return yylexname ();
3683 /* This only happens in Objective-C; it must be a keyword. */
3684 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3695 case CPP_OBJC_STRING:
3698 /* These tokens are C++ specific (and will not be generated
3699 in C mode, but let's be cautious). */
3701 case CPP_DEREF_STAR:
3707 /* These tokens should not survive translation phase 4. */
3710 error ("syntax error at '%s' token", NAME(last_token));
3723 timevar_push (TV_LEX);
3725 timevar_pop (TV_LEX);
3729 /* Function used when yydebug is set, to print a token in more detail. */
3732 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3736 fprintf (file, " [%s]", NAME(last_token));
3747 if (IDENTIFIER_POINTER (t))
3748 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3752 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3753 if (TREE_CODE (t) == INTEGER_CST)
3756 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3757 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3763 /* This is not the ideal place to put these, but we have to get them out
3764 of c-lex.c because cp/lex.c has its own versions. */
3766 /* Parse the file. */
3771 /* In case there were missing closebraces, get us back to the global
3773 while (! global_bindings_p ())
3775 /* __FUNCTION__ is defined at file scope (""). This
3776 call may not be necessary as my tests indicate it
3777 still works without it. */
3778 finish_fname_decls ();
3782 free (malloced_yyss);
3783 free (malloced_yyvs);
3788 #include "gt-c-parse.h"