1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 ifobjc ... end ifobjc conditionals contain code for Objective C only.
24 ifc ... end ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
38 #include "coretypes.h"
45 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
57 /* Like YYERROR but do call yyerror. */
58 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
60 /* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
67 static short *malloced_yyss;
68 static void *malloced_yyvs;
70 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
75 newsize = *(YYSSZ) *= 2; \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
86 memcpy (newss, *(SS), (SSSIZE)); \
88 memcpy (newvs, *(VS), (VSSIZE)); \
90 if (!newss || !newvs) \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
104 %union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
111 /* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
116 /* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118 %token SCSPEC /* Storage class other than static. */
119 %token STATIC /* Static storage class. */
121 /* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
129 /* Character or numeric constants.
130 yylval is the node for the constant. */
133 /* String constants in raw form.
134 yylval is a STRING_CST node. */
138 /* "...", used for functions with variable arglists. */
141 /* the reserved words */
142 /* SCO include files test "ASM", so use something else. */
143 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145 %token ATTRIBUTE EXTENSION LABEL
146 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147 %token PTR_VALUE PTR_BASE PTR_EXTENT
150 /* Add precedence rules to solve dangling else s/r conflict */
154 /* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
158 %right <code> ASSIGN '='
159 %right <code> '?' ':'
165 %left <code> EQCOMPARE
166 %left <code> ARITHCOMPARE
167 %left <code> LSHIFT RSHIFT
169 %left <code> '*' '/' '%'
170 %right <code> UNARY PLUSPLUS MINUSMINUS
172 %left <code> POINTSAT '.' '(' '['
174 /* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
181 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
182 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
184 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
185 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
186 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
187 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
188 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
189 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
190 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
191 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
192 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
193 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
194 %type <ttype> declspecs_ts declspecs_nots
195 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
196 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
197 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
198 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
199 %type <ttype> typespec_nonreserved_nonattr
201 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
202 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
203 %type <ttype> init maybeasm
204 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
205 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
206 %type <ttype> any_word extension
208 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
209 %type <ttype> do_stmt_start poplevel stmt label
211 %type <ttype> c99_block_start c99_block_end
212 %type <ttype> declarator
213 %type <ttype> notype_declarator after_type_declarator
214 %type <ttype> parm_declarator
215 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
216 %type <ttype> array_declarator
218 %type <ttype> structsp_attr structsp_nonattr
219 %type <ttype> component_decl_list component_decl_list2
220 %type <ttype> component_decl components components_notype component_declarator
221 %type <ttype> component_notype_declarator
222 %type <ttype> enumlist enumerator
223 %type <ttype> struct_head union_head enum_head
224 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
225 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
226 %type <ttype> xexpr parms parm firstparm identifiers
228 %type <ttype> parmlist parmlist_1 parmlist_2
229 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
230 %type <ttype> identifiers_or_typenames
232 %type <itype> setspecs setspecs_fp
234 %type <location> save_location
237 /* the Objective-C nonterminals */
239 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
240 %type <ttype> methoddecl unaryselector keywordselector selector
241 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
242 %type <ttype> keywordexpr keywordarglist keywordarg
243 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
244 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
245 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
247 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
251 /* Number of statements (loosely speaking) and compound statements
253 static int stmt_count;
254 static int compstmt_count;
256 /* Input location of the end of the body of last simple_if;
257 used by the stmt-rule immediately after simple_if returns. */
258 static location_t if_stmt_locus;
261 /* List of types and structure classes of the current declaration. */
262 static GTY(()) tree current_declspecs;
263 static GTY(()) tree prefix_attributes;
265 /* List of all the attributes applying to the identifier currently being
266 declared; includes prefix_attributes and possibly some more attributes
267 just after a comma. */
268 static GTY(()) tree all_prefix_attributes;
270 /* Stack of saved values of current_declspecs, prefix_attributes and
271 all_prefix_attributes. */
272 static GTY(()) tree declspec_stack;
274 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
275 should be called from the productions making use of setspecs. */
276 #define PUSH_DECLSPEC_STACK \
278 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
279 all_prefix_attributes), \
284 #define POP_DECLSPEC_STACK \
286 current_declspecs = TREE_VALUE (declspec_stack); \
287 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
288 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
289 declspec_stack = TREE_CHAIN (declspec_stack); \
292 /* For __extension__, save/restore the warning flags which are
293 controlled by __extension__. */
294 #define SAVE_EXT_FLAGS() \
296 | (warn_pointer_arith << 1) \
297 | (warn_traditional << 2) \
300 #define RESTORE_EXT_FLAGS(tval) \
302 int val = tree_low_cst (tval, 0); \
303 pedantic = val & 1; \
304 warn_pointer_arith = (val >> 1) & 1; \
305 warn_traditional = (val >> 2) & 1; \
306 flag_iso = (val >> 3) & 1; \
310 /* Objective-C specific parser/lexer information */
312 static enum tree_code objc_inherit_code;
313 static int objc_pq_context = 0, objc_public_flag = 0;
315 /* The following flag is needed to contextualize ObjC lexical analysis.
316 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
317 an identifier to an ObjC class, even if a class with that name
319 static int objc_need_raw_identifier;
320 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
327 static bool parsing_iso_function_signature;
329 /* Tell yyparse how to print a token's value, if yydebug is set. */
331 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
333 static void yyprint (FILE *, int, YYSTYPE);
334 static void yyerror (const char *);
335 static int yylexname (void);
336 static inline int _yylex (void);
337 static int yylex (void);
338 static void init_reswords (void);
340 /* Initialisation routine for this file. */
352 pedwarn ("ISO C forbids an empty source file");
357 /* the reason for the strange actions in this rule
358 is so that notype_initdecls when reached via datadef
359 can find a valid list of type and sc specs in $0. */
362 {$<ttype>$ = NULL_TREE; } extdef
363 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
368 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
377 | ASM_KEYWORD '(' expr ')' ';'
379 if ((TREE_CODE ($3) == ADDR_EXPR
380 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
381 || TREE_CODE ($3) == STRING_CST)
384 error ("argument of `asm' is not a constant string"); }
386 { RESTORE_EXT_FLAGS ($1); }
390 setspecs notype_initdecls ';'
392 error ("ISO C forbids data definition with no type or storage class");
394 warning ("data definition has no type or storage class");
396 POP_DECLSPEC_STACK; }
397 | declspecs_nots setspecs notype_initdecls ';'
398 { POP_DECLSPEC_STACK; }
399 | declspecs_ts setspecs initdecls ';'
400 { POP_DECLSPEC_STACK; }
407 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
411 declspecs_ts setspecs declarator
412 { if (! start_function (current_declspecs, $3,
413 all_prefix_attributes))
416 old_style_parm_decls save_location
417 { set_tree_locus (current_function_decl, $6);
418 store_parm_decls (); }
420 { finish_function ();
421 POP_DECLSPEC_STACK; }
422 | declspecs_ts setspecs declarator error
423 { POP_DECLSPEC_STACK; }
424 | declspecs_nots setspecs notype_declarator
425 { if (! start_function (current_declspecs, $3,
426 all_prefix_attributes))
429 old_style_parm_decls save_location
430 { set_tree_locus (current_function_decl, $6);
431 store_parm_decls (); }
433 { finish_function ();
434 POP_DECLSPEC_STACK; }
435 | declspecs_nots setspecs notype_declarator error
436 { POP_DECLSPEC_STACK; }
437 | setspecs notype_declarator
438 { if (! start_function (NULL_TREE, $2,
439 all_prefix_attributes))
442 old_style_parm_decls save_location
443 { set_tree_locus (current_function_decl, $5);
444 store_parm_decls (); }
446 { finish_function ();
447 POP_DECLSPEC_STACK; }
448 | setspecs notype_declarator error
449 { POP_DECLSPEC_STACK; }
464 { $$ = NEGATE_EXPR; }
468 if (warn_traditional && !in_system_header)
469 warning ("traditional C rejects the unary plus operator");
473 { $$ = PREINCREMENT_EXPR; }
475 { $$ = PREDECREMENT_EXPR; }
477 { $$ = BIT_NOT_EXPR; }
479 { $$ = TRUTH_NOT_EXPR; }
482 expr: nonnull_exprlist
483 { $$ = build_compound_expr ($1); }
494 { $$ = build_tree_list (NULL_TREE, $1); }
495 | nonnull_exprlist ',' expr_no_commas
496 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
501 | '*' cast_expr %prec UNARY
502 { $$ = build_indirect_ref ($2, "unary *"); }
503 /* __extension__ turns off -pedantic for following primary. */
504 | extension cast_expr %prec UNARY
506 RESTORE_EXT_FLAGS ($1); }
507 | unop cast_expr %prec UNARY
508 { $$ = build_unary_op ($1, $2, 0);
509 overflow_warning ($$); }
510 /* Refer to the address of a label as a pointer. */
512 { $$ = finish_label_address_expr ($2); }
513 | sizeof unary_expr %prec UNARY
515 if (TREE_CODE ($2) == COMPONENT_REF
516 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
517 error ("`sizeof' applied to a bit-field");
518 $$ = c_sizeof (TREE_TYPE ($2)); }
519 | sizeof '(' typename ')' %prec HYPERUNARY
521 $$ = c_sizeof (groktypename ($3)); }
522 | alignof unary_expr %prec UNARY
524 $$ = c_alignof_expr ($2); }
525 | alignof '(' typename ')' %prec HYPERUNARY
527 $$ = c_alignof (groktypename ($3)); }
528 | REALPART cast_expr %prec UNARY
529 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
530 | IMAGPART cast_expr %prec UNARY
531 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
535 SIZEOF { skip_evaluation++; }
539 ALIGNOF { skip_evaluation++; }
543 TYPEOF { skip_evaluation++; }
548 | '(' typename ')' cast_expr %prec UNARY
549 { $$ = c_cast_expr ($2, $4); }
554 | expr_no_commas '+' expr_no_commas
555 { $$ = parser_build_binary_op ($2, $1, $3); }
556 | expr_no_commas '-' expr_no_commas
557 { $$ = parser_build_binary_op ($2, $1, $3); }
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 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas LSHIFT expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas RSHIFT expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas ARITHCOMPARE expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas EQCOMPARE expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas '&' expr_no_commas
573 { $$ = parser_build_binary_op ($2, $1, $3); }
574 | expr_no_commas '|' 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 ANDAND
579 { $1 = c_common_truthvalue_conversion
580 (default_conversion ($1));
581 skip_evaluation += $1 == truthvalue_false_node; }
583 { skip_evaluation -= $1 == truthvalue_false_node;
584 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
585 | expr_no_commas OROR
586 { $1 = c_common_truthvalue_conversion
587 (default_conversion ($1));
588 skip_evaluation += $1 == truthvalue_true_node; }
590 { skip_evaluation -= $1 == truthvalue_true_node;
591 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
593 { $1 = c_common_truthvalue_conversion
594 (default_conversion ($1));
595 skip_evaluation += $1 == truthvalue_false_node; }
597 { skip_evaluation += (($1 == truthvalue_true_node)
598 - ($1 == truthvalue_false_node)); }
600 { skip_evaluation -= $1 == truthvalue_true_node;
601 $$ = build_conditional_expr ($1, $4, $7); }
604 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
605 /* Make sure first operand is calculated only once. */
606 $<ttype>2 = save_expr ($1);
607 $1 = c_common_truthvalue_conversion
608 (default_conversion ($<ttype>2));
609 skip_evaluation += $1 == truthvalue_true_node; }
611 { skip_evaluation -= $1 == truthvalue_true_node;
612 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
613 | expr_no_commas '=' expr_no_commas
615 $$ = build_modify_expr ($1, NOP_EXPR, $3);
616 class = TREE_CODE_CLASS (TREE_CODE ($$));
617 if (IS_EXPR_CODE_CLASS (class))
618 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
620 | expr_no_commas ASSIGN expr_no_commas
622 $$ = build_modify_expr ($1, $2, $3);
623 /* This inhibits warnings in
624 c_common_truthvalue_conversion. */
625 class = TREE_CODE_CLASS (TREE_CODE ($$));
626 if (IS_EXPR_CODE_CLASS (class))
627 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
634 if (yychar == YYEMPTY)
636 $$ = build_external_ref ($1, yychar == '(');
641 { $$ = fname_decl (C_RID_CODE ($$), $$); }
642 | '(' typename ')' '{'
643 { start_init (NULL_TREE, NULL, 0);
644 $2 = groktypename ($2);
645 really_start_incremental_init ($2); }
646 initlist_maybe_comma '}' %prec UNARY
647 { tree constructor = pop_init_level (0);
651 if (pedantic && ! flag_isoc99)
652 pedwarn ("ISO C89 forbids compound literals");
653 $$ = build_compound_literal (type, constructor);
656 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
657 if (IS_EXPR_CODE_CLASS (class))
658 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
661 { $$ = error_mark_node; }
662 | compstmt_primary_start compstmt_nostart ')'
663 { tree saved_last_tree;
666 pedwarn ("ISO C forbids braced-groups within expressions");
667 saved_last_tree = COMPOUND_BODY ($1);
668 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
669 last_tree = saved_last_tree;
670 TREE_CHAIN (last_tree) = NULL_TREE;
672 last_expr_type = void_type_node;
673 $$ = build1 (STMT_EXPR, last_expr_type, $1);
674 TREE_SIDE_EFFECTS ($$) = 1;
676 | compstmt_primary_start error ')'
678 last_tree = COMPOUND_BODY ($1);
679 TREE_CHAIN (last_tree) = NULL_TREE;
680 $$ = error_mark_node;
682 | primary '(' exprlist ')' %prec '.'
683 { $$ = build_function_call ($1, $3); }
684 | VA_ARG '(' expr_no_commas ',' typename ')'
685 { $$ = build_va_arg ($3, groktypename ($5)); }
687 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
693 if (TREE_CODE (c) != INTEGER_CST)
694 error ("first argument to __builtin_choose_expr not a constant");
695 $$ = integer_zerop (c) ? $7 : $5;
697 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
701 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
702 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
704 $$ = comptypes (e1, e2, COMPARE_STRICT)
705 ? build_int_2 (1, 0) : build_int_2 (0, 0);
707 | primary '[' expr ']' %prec '.'
708 { $$ = build_array_ref ($1, $3); }
709 | primary '.' identifier
712 if (!is_public ($1, $3))
713 $$ = error_mark_node;
716 $$ = build_component_ref ($1, $3);
718 | primary POINTSAT identifier
720 tree expr = build_indirect_ref ($1, "->");
723 if (!is_public (expr, $3))
724 $$ = error_mark_node;
727 $$ = build_component_ref (expr, $3);
730 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
732 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
735 { $$ = build_message_expr ($1); }
737 { $$ = build_selector_expr ($1); }
739 { $$ = build_protocol_expr ($1); }
741 { $$ = build_encode_expr ($1); }
743 { $$ = build_objc_string_object ($1); }
747 old_style_parm_decls:
748 old_style_parm_decls_1
750 parsing_iso_function_signature = false; /* Reset after decls. */
754 old_style_parm_decls_1:
757 if (warn_traditional && !in_system_header
758 && parsing_iso_function_signature)
759 warning ("traditional C rejects ISO C style function definitions");
760 if (warn_old_style_definition && !in_system_header
761 && !parsing_iso_function_signature)
762 warning ("old-style parameter declaration");
763 parsing_iso_function_signature = false; /* Reset after warning. */
767 if (warn_old_style_definition && !in_system_header)
768 warning ("old-style parameter declaration");
772 /* The following are analogous to lineno_decl, decls and decl
773 except that they do not allow nested functions.
774 They are used for old-style parm decls. */
776 save_location datadecl
783 | datadecls lineno_datadecl
784 | lineno_datadecl errstmt
787 /* We don't allow prefix attributes here because they cause reduce/reduce
788 conflicts: we can't know whether we're parsing a function decl with
789 attribute suffix, or function defn with attribute prefix on first old
792 declspecs_ts_nosa setspecs initdecls ';'
793 { POP_DECLSPEC_STACK; }
794 | declspecs_nots_nosa setspecs notype_initdecls ';'
795 { POP_DECLSPEC_STACK; }
796 | declspecs_ts_nosa ';'
797 { shadow_tag_warned ($1, 1);
798 pedwarn ("empty declaration"); }
799 | declspecs_nots_nosa ';'
800 { pedwarn ("empty declaration"); }
803 /* This combination which saves a lineno before a decl
804 is the normal thing to use, rather than decl itself.
805 This is to avoid shift/reduce conflicts in contexts
806 where statement labels are allowed. */
812 /* records the type and storage class specs to use for processing
813 the declarators that follow.
814 Maintains a stack of outer-level values of current_declspecs,
815 for the sake of parm declarations nested in function declarators. */
816 setspecs: /* empty */
817 { pending_xref_error ();
819 split_specs_attrs ($<ttype>0,
820 ¤t_declspecs, &prefix_attributes);
821 all_prefix_attributes = prefix_attributes; }
824 /* Possibly attributes after a comma, which should reset all_prefix_attributes
825 to prefix_attributes with these ones chained on the front. */
828 { all_prefix_attributes = chainon ($1, prefix_attributes); }
832 declspecs_ts setspecs initdecls ';'
833 { POP_DECLSPEC_STACK; }
834 | declspecs_nots setspecs notype_initdecls ';'
835 { POP_DECLSPEC_STACK; }
836 | declspecs_ts setspecs nested_function
837 { POP_DECLSPEC_STACK; }
838 | declspecs_nots setspecs notype_nested_function
839 { POP_DECLSPEC_STACK; }
843 { RESTORE_EXT_FLAGS ($1); }
846 /* A list of declaration specifiers. These are:
848 - Storage class specifiers (scspec), which for GCC currently includes
849 function specifiers ("inline").
851 - Type specifiers (typespec_*).
853 - Type qualifiers (TYPE_QUAL).
855 - Attribute specifier lists (attributes).
857 These are stored as a TREE_LIST; the head of the list is the last
858 item in the specifier list. Each entry in the list has either a
859 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
860 is a single other specifier or qualifier; and a TREE_CHAIN that is the
861 rest of the list. TREE_STATIC is set on the list if something other
862 than a storage class specifier or attribute has been seen; this is used
863 to warn for the obsolescent usage of storage class specifiers other than
864 at the start of the list. (Doing this properly would require function
865 specifiers to be handled separately from storage class specifiers.)
867 The various cases below are classified according to:
869 (a) Whether a storage class specifier is included or not; some
870 places in the grammar disallow storage class specifiers (_sc or _nosc).
872 (b) Whether a type specifier has been seen; after a type specifier,
873 a typedef name is an identifier to redeclare (_ts or _nots).
875 (c) Whether the list starts with an attribute; in certain places,
876 the grammar requires specifiers that don't start with an attribute
879 (d) Whether the list ends with an attribute (or a specifier such that
880 any following attribute would have been parsed as part of that specifier);
881 this avoids shift-reduce conflicts in the parsing of attributes
886 (i) Distinguish between function specifiers and storage class specifiers,
887 at least for the purpose of warnings about obsolescent usage.
889 (ii) Halve the number of productions here by eliminating the _sc/_nosc
890 distinction and instead checking where required that storage class
891 specifiers aren't present. */
893 /* Declspecs which contain at least one type specifier or typedef name.
894 (Just `const' or `volatile' is not enough.)
895 A typedef'd name following these is taken as a name to be declared.
896 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
898 declspecs_nosc_nots_nosa_noea:
900 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
901 TREE_STATIC ($$) = 1; }
902 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
903 { $$ = tree_cons (NULL_TREE, $2, $1);
904 TREE_STATIC ($$) = 1; }
905 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
906 { $$ = tree_cons (NULL_TREE, $2, $1);
907 TREE_STATIC ($$) = 1; }
910 declspecs_nosc_nots_nosa_ea:
911 declspecs_nosc_nots_nosa_noea attributes
912 { $$ = tree_cons ($2, NULL_TREE, $1);
913 TREE_STATIC ($$) = TREE_STATIC ($1); }
916 declspecs_nosc_nots_sa_noea:
917 declspecs_nosc_nots_sa_noea TYPE_QUAL
918 { $$ = tree_cons (NULL_TREE, $2, $1);
919 TREE_STATIC ($$) = 1; }
920 | declspecs_nosc_nots_sa_ea TYPE_QUAL
921 { $$ = tree_cons (NULL_TREE, $2, $1);
922 TREE_STATIC ($$) = 1; }
925 declspecs_nosc_nots_sa_ea:
927 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
928 TREE_STATIC ($$) = 0; }
929 | declspecs_nosc_nots_sa_noea attributes
930 { $$ = tree_cons ($2, NULL_TREE, $1);
931 TREE_STATIC ($$) = TREE_STATIC ($1); }
934 declspecs_nosc_ts_nosa_noea:
936 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
937 TREE_STATIC ($$) = 1; }
938 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
939 { $$ = tree_cons (NULL_TREE, $2, $1);
940 TREE_STATIC ($$) = 1; }
941 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
942 { $$ = tree_cons (NULL_TREE, $2, $1);
943 TREE_STATIC ($$) = 1; }
944 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
945 { $$ = tree_cons (NULL_TREE, $2, $1);
946 TREE_STATIC ($$) = 1; }
947 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
948 { $$ = tree_cons (NULL_TREE, $2, $1);
949 TREE_STATIC ($$) = 1; }
950 | declspecs_nosc_nots_nosa_noea typespec_nonattr
951 { $$ = tree_cons (NULL_TREE, $2, $1);
952 TREE_STATIC ($$) = 1; }
953 | declspecs_nosc_nots_nosa_ea typespec_nonattr
954 { $$ = tree_cons (NULL_TREE, $2, $1);
955 TREE_STATIC ($$) = 1; }
958 declspecs_nosc_ts_nosa_ea:
960 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
961 TREE_STATIC ($$) = 1; }
962 | declspecs_nosc_ts_nosa_noea attributes
963 { $$ = tree_cons ($2, NULL_TREE, $1);
964 TREE_STATIC ($$) = TREE_STATIC ($1); }
965 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
966 { $$ = tree_cons (NULL_TREE, $2, $1);
967 TREE_STATIC ($$) = 1; }
968 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
969 { $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = 1; }
971 | declspecs_nosc_nots_nosa_noea typespec_attr
972 { $$ = tree_cons (NULL_TREE, $2, $1);
973 TREE_STATIC ($$) = 1; }
974 | declspecs_nosc_nots_nosa_ea typespec_attr
975 { $$ = tree_cons (NULL_TREE, $2, $1);
976 TREE_STATIC ($$) = 1; }
979 declspecs_nosc_ts_sa_noea:
980 declspecs_nosc_ts_sa_noea TYPE_QUAL
981 { $$ = tree_cons (NULL_TREE, $2, $1);
982 TREE_STATIC ($$) = 1; }
983 | declspecs_nosc_ts_sa_ea TYPE_QUAL
984 { $$ = tree_cons (NULL_TREE, $2, $1);
985 TREE_STATIC ($$) = 1; }
986 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
987 { $$ = tree_cons (NULL_TREE, $2, $1);
988 TREE_STATIC ($$) = 1; }
989 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
990 { $$ = tree_cons (NULL_TREE, $2, $1);
991 TREE_STATIC ($$) = 1; }
992 | declspecs_nosc_nots_sa_noea typespec_nonattr
993 { $$ = tree_cons (NULL_TREE, $2, $1);
994 TREE_STATIC ($$) = 1; }
995 | declspecs_nosc_nots_sa_ea typespec_nonattr
996 { $$ = tree_cons (NULL_TREE, $2, $1);
997 TREE_STATIC ($$) = 1; }
1000 declspecs_nosc_ts_sa_ea:
1001 declspecs_nosc_ts_sa_noea attributes
1002 { $$ = tree_cons ($2, NULL_TREE, $1);
1003 TREE_STATIC ($$) = TREE_STATIC ($1); }
1004 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1005 { $$ = tree_cons (NULL_TREE, $2, $1);
1006 TREE_STATIC ($$) = 1; }
1007 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1008 { $$ = tree_cons (NULL_TREE, $2, $1);
1009 TREE_STATIC ($$) = 1; }
1010 | declspecs_nosc_nots_sa_noea typespec_attr
1011 { $$ = tree_cons (NULL_TREE, $2, $1);
1012 TREE_STATIC ($$) = 1; }
1013 | declspecs_nosc_nots_sa_ea typespec_attr
1014 { $$ = tree_cons (NULL_TREE, $2, $1);
1015 TREE_STATIC ($$) = 1; }
1018 declspecs_sc_nots_nosa_noea:
1020 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1021 TREE_STATIC ($$) = 0; }
1022 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1023 { $$ = tree_cons (NULL_TREE, $2, $1);
1024 TREE_STATIC ($$) = 1; }
1025 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1026 { $$ = tree_cons (NULL_TREE, $2, $1);
1027 TREE_STATIC ($$) = 1; }
1028 | declspecs_nosc_nots_nosa_noea scspec
1029 { if (extra_warnings && TREE_STATIC ($1))
1030 warning ("`%s' is not at beginning of declaration",
1031 IDENTIFIER_POINTER ($2));
1032 $$ = tree_cons (NULL_TREE, $2, $1);
1033 TREE_STATIC ($$) = TREE_STATIC ($1); }
1034 | declspecs_nosc_nots_nosa_ea scspec
1035 { if (extra_warnings && TREE_STATIC ($1))
1036 warning ("`%s' is not at beginning of declaration",
1037 IDENTIFIER_POINTER ($2));
1038 $$ = tree_cons (NULL_TREE, $2, $1);
1039 TREE_STATIC ($$) = TREE_STATIC ($1); }
1040 | declspecs_sc_nots_nosa_noea scspec
1041 { if (extra_warnings && TREE_STATIC ($1))
1042 warning ("`%s' is not at beginning of declaration",
1043 IDENTIFIER_POINTER ($2));
1044 $$ = tree_cons (NULL_TREE, $2, $1);
1045 TREE_STATIC ($$) = TREE_STATIC ($1); }
1046 | declspecs_sc_nots_nosa_ea scspec
1047 { if (extra_warnings && TREE_STATIC ($1))
1048 warning ("`%s' is not at beginning of declaration",
1049 IDENTIFIER_POINTER ($2));
1050 $$ = tree_cons (NULL_TREE, $2, $1);
1051 TREE_STATIC ($$) = TREE_STATIC ($1); }
1054 declspecs_sc_nots_nosa_ea:
1055 declspecs_sc_nots_nosa_noea attributes
1056 { $$ = tree_cons ($2, NULL_TREE, $1);
1057 TREE_STATIC ($$) = TREE_STATIC ($1); }
1060 declspecs_sc_nots_sa_noea:
1061 declspecs_sc_nots_sa_noea TYPE_QUAL
1062 { $$ = tree_cons (NULL_TREE, $2, $1);
1063 TREE_STATIC ($$) = 1; }
1064 | declspecs_sc_nots_sa_ea TYPE_QUAL
1065 { $$ = tree_cons (NULL_TREE, $2, $1);
1066 TREE_STATIC ($$) = 1; }
1067 | declspecs_nosc_nots_sa_noea scspec
1068 { if (extra_warnings && TREE_STATIC ($1))
1069 warning ("`%s' is not at beginning of declaration",
1070 IDENTIFIER_POINTER ($2));
1071 $$ = tree_cons (NULL_TREE, $2, $1);
1072 TREE_STATIC ($$) = TREE_STATIC ($1); }
1073 | declspecs_nosc_nots_sa_ea scspec
1074 { if (extra_warnings && TREE_STATIC ($1))
1075 warning ("`%s' is not at beginning of declaration",
1076 IDENTIFIER_POINTER ($2));
1077 $$ = tree_cons (NULL_TREE, $2, $1);
1078 TREE_STATIC ($$) = TREE_STATIC ($1); }
1079 | declspecs_sc_nots_sa_noea scspec
1080 { if (extra_warnings && TREE_STATIC ($1))
1081 warning ("`%s' is not at beginning of declaration",
1082 IDENTIFIER_POINTER ($2));
1083 $$ = tree_cons (NULL_TREE, $2, $1);
1084 TREE_STATIC ($$) = TREE_STATIC ($1); }
1085 | declspecs_sc_nots_sa_ea scspec
1086 { if (extra_warnings && TREE_STATIC ($1))
1087 warning ("`%s' is not at beginning of declaration",
1088 IDENTIFIER_POINTER ($2));
1089 $$ = tree_cons (NULL_TREE, $2, $1);
1090 TREE_STATIC ($$) = TREE_STATIC ($1); }
1093 declspecs_sc_nots_sa_ea:
1094 declspecs_sc_nots_sa_noea attributes
1095 { $$ = tree_cons ($2, NULL_TREE, $1);
1096 TREE_STATIC ($$) = TREE_STATIC ($1); }
1099 declspecs_sc_ts_nosa_noea:
1100 declspecs_sc_ts_nosa_noea TYPE_QUAL
1101 { $$ = tree_cons (NULL_TREE, $2, $1);
1102 TREE_STATIC ($$) = 1; }
1103 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1104 { $$ = tree_cons (NULL_TREE, $2, $1);
1105 TREE_STATIC ($$) = 1; }
1106 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1107 { $$ = tree_cons (NULL_TREE, $2, $1);
1108 TREE_STATIC ($$) = 1; }
1109 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1110 { $$ = tree_cons (NULL_TREE, $2, $1);
1111 TREE_STATIC ($$) = 1; }
1112 | declspecs_sc_nots_nosa_noea typespec_nonattr
1113 { $$ = tree_cons (NULL_TREE, $2, $1);
1114 TREE_STATIC ($$) = 1; }
1115 | declspecs_sc_nots_nosa_ea typespec_nonattr
1116 { $$ = tree_cons (NULL_TREE, $2, $1);
1117 TREE_STATIC ($$) = 1; }
1118 | declspecs_nosc_ts_nosa_noea scspec
1119 { if (extra_warnings && TREE_STATIC ($1))
1120 warning ("`%s' is not at beginning of declaration",
1121 IDENTIFIER_POINTER ($2));
1122 $$ = tree_cons (NULL_TREE, $2, $1);
1123 TREE_STATIC ($$) = TREE_STATIC ($1); }
1124 | declspecs_nosc_ts_nosa_ea scspec
1125 { if (extra_warnings && TREE_STATIC ($1))
1126 warning ("`%s' is not at beginning of declaration",
1127 IDENTIFIER_POINTER ($2));
1128 $$ = tree_cons (NULL_TREE, $2, $1);
1129 TREE_STATIC ($$) = TREE_STATIC ($1); }
1130 | declspecs_sc_ts_nosa_noea scspec
1131 { if (extra_warnings && TREE_STATIC ($1))
1132 warning ("`%s' is not at beginning of declaration",
1133 IDENTIFIER_POINTER ($2));
1134 $$ = tree_cons (NULL_TREE, $2, $1);
1135 TREE_STATIC ($$) = TREE_STATIC ($1); }
1136 | declspecs_sc_ts_nosa_ea scspec
1137 { if (extra_warnings && TREE_STATIC ($1))
1138 warning ("`%s' is not at beginning of declaration",
1139 IDENTIFIER_POINTER ($2));
1140 $$ = tree_cons (NULL_TREE, $2, $1);
1141 TREE_STATIC ($$) = TREE_STATIC ($1); }
1144 declspecs_sc_ts_nosa_ea:
1145 declspecs_sc_ts_nosa_noea attributes
1146 { $$ = tree_cons ($2, NULL_TREE, $1);
1147 TREE_STATIC ($$) = TREE_STATIC ($1); }
1148 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1149 { $$ = tree_cons (NULL_TREE, $2, $1);
1150 TREE_STATIC ($$) = 1; }
1151 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1152 { $$ = tree_cons (NULL_TREE, $2, $1);
1153 TREE_STATIC ($$) = 1; }
1154 | declspecs_sc_nots_nosa_noea typespec_attr
1155 { $$ = tree_cons (NULL_TREE, $2, $1);
1156 TREE_STATIC ($$) = 1; }
1157 | declspecs_sc_nots_nosa_ea typespec_attr
1158 { $$ = tree_cons (NULL_TREE, $2, $1);
1159 TREE_STATIC ($$) = 1; }
1162 declspecs_sc_ts_sa_noea:
1163 declspecs_sc_ts_sa_noea TYPE_QUAL
1164 { $$ = tree_cons (NULL_TREE, $2, $1);
1165 TREE_STATIC ($$) = 1; }
1166 | declspecs_sc_ts_sa_ea TYPE_QUAL
1167 { $$ = tree_cons (NULL_TREE, $2, $1);
1168 TREE_STATIC ($$) = 1; }
1169 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1170 { $$ = tree_cons (NULL_TREE, $2, $1);
1171 TREE_STATIC ($$) = 1; }
1172 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1173 { $$ = tree_cons (NULL_TREE, $2, $1);
1174 TREE_STATIC ($$) = 1; }
1175 | declspecs_sc_nots_sa_noea typespec_nonattr
1176 { $$ = tree_cons (NULL_TREE, $2, $1);
1177 TREE_STATIC ($$) = 1; }
1178 | declspecs_sc_nots_sa_ea typespec_nonattr
1179 { $$ = tree_cons (NULL_TREE, $2, $1);
1180 TREE_STATIC ($$) = 1; }
1181 | declspecs_nosc_ts_sa_noea scspec
1182 { if (extra_warnings && TREE_STATIC ($1))
1183 warning ("`%s' is not at beginning of declaration",
1184 IDENTIFIER_POINTER ($2));
1185 $$ = tree_cons (NULL_TREE, $2, $1);
1186 TREE_STATIC ($$) = TREE_STATIC ($1); }
1187 | declspecs_nosc_ts_sa_ea scspec
1188 { if (extra_warnings && TREE_STATIC ($1))
1189 warning ("`%s' is not at beginning of declaration",
1190 IDENTIFIER_POINTER ($2));
1191 $$ = tree_cons (NULL_TREE, $2, $1);
1192 TREE_STATIC ($$) = TREE_STATIC ($1); }
1193 | declspecs_sc_ts_sa_noea scspec
1194 { if (extra_warnings && TREE_STATIC ($1))
1195 warning ("`%s' is not at beginning of declaration",
1196 IDENTIFIER_POINTER ($2));
1197 $$ = tree_cons (NULL_TREE, $2, $1);
1198 TREE_STATIC ($$) = TREE_STATIC ($1); }
1199 | declspecs_sc_ts_sa_ea scspec
1200 { if (extra_warnings && TREE_STATIC ($1))
1201 warning ("`%s' is not at beginning of declaration",
1202 IDENTIFIER_POINTER ($2));
1203 $$ = tree_cons (NULL_TREE, $2, $1);
1204 TREE_STATIC ($$) = TREE_STATIC ($1); }
1207 declspecs_sc_ts_sa_ea:
1208 declspecs_sc_ts_sa_noea attributes
1209 { $$ = tree_cons ($2, NULL_TREE, $1);
1210 TREE_STATIC ($$) = TREE_STATIC ($1); }
1211 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1212 { $$ = tree_cons (NULL_TREE, $2, $1);
1213 TREE_STATIC ($$) = 1; }
1214 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1215 { $$ = tree_cons (NULL_TREE, $2, $1);
1216 TREE_STATIC ($$) = 1; }
1217 | declspecs_sc_nots_sa_noea typespec_attr
1218 { $$ = tree_cons (NULL_TREE, $2, $1);
1219 TREE_STATIC ($$) = 1; }
1220 | declspecs_sc_nots_sa_ea typespec_attr
1221 { $$ = tree_cons (NULL_TREE, $2, $1);
1222 TREE_STATIC ($$) = 1; }
1225 /* Particular useful classes of declspecs. */
1227 declspecs_nosc_ts_nosa_noea
1228 | declspecs_nosc_ts_nosa_ea
1229 | declspecs_nosc_ts_sa_noea
1230 | declspecs_nosc_ts_sa_ea
1231 | declspecs_sc_ts_nosa_noea
1232 | declspecs_sc_ts_nosa_ea
1233 | declspecs_sc_ts_sa_noea
1234 | declspecs_sc_ts_sa_ea
1238 declspecs_nosc_nots_nosa_noea
1239 | declspecs_nosc_nots_nosa_ea
1240 | declspecs_nosc_nots_sa_noea
1241 | declspecs_nosc_nots_sa_ea
1242 | declspecs_sc_nots_nosa_noea
1243 | declspecs_sc_nots_nosa_ea
1244 | declspecs_sc_nots_sa_noea
1245 | declspecs_sc_nots_sa_ea
1249 declspecs_nosc_ts_nosa_noea
1250 | declspecs_nosc_ts_nosa_ea
1251 | declspecs_sc_ts_nosa_noea
1252 | declspecs_sc_ts_nosa_ea
1255 declspecs_nots_nosa:
1256 declspecs_nosc_nots_nosa_noea
1257 | declspecs_nosc_nots_nosa_ea
1258 | declspecs_sc_nots_nosa_noea
1259 | declspecs_sc_nots_nosa_ea
1263 declspecs_nosc_ts_nosa_noea
1264 | declspecs_nosc_ts_nosa_ea
1265 | declspecs_nosc_ts_sa_noea
1266 | declspecs_nosc_ts_sa_ea
1269 declspecs_nosc_nots:
1270 declspecs_nosc_nots_nosa_noea
1271 | declspecs_nosc_nots_nosa_ea
1272 | declspecs_nosc_nots_sa_noea
1273 | declspecs_nosc_nots_sa_ea
1277 declspecs_nosc_ts_nosa_noea
1278 | declspecs_nosc_ts_nosa_ea
1279 | declspecs_nosc_ts_sa_noea
1280 | declspecs_nosc_ts_sa_ea
1281 | declspecs_nosc_nots_nosa_noea
1282 | declspecs_nosc_nots_nosa_ea
1283 | declspecs_nosc_nots_sa_noea
1284 | declspecs_nosc_nots_sa_ea
1288 declspecs_nosc_nots_nosa_noea
1289 | declspecs_nosc_nots_nosa_ea
1290 | declspecs_nosc_nots_sa_noea
1291 | declspecs_nosc_nots_sa_ea
1292 | declspecs_nosc_ts_nosa_noea
1293 | declspecs_nosc_ts_nosa_ea
1294 | declspecs_nosc_ts_sa_noea
1295 | declspecs_nosc_ts_sa_ea
1296 | declspecs_sc_nots_nosa_noea
1297 | declspecs_sc_nots_nosa_ea
1298 | declspecs_sc_nots_sa_noea
1299 | declspecs_sc_nots_sa_ea
1300 | declspecs_sc_ts_nosa_noea
1301 | declspecs_sc_ts_nosa_ea
1302 | declspecs_sc_ts_sa_noea
1303 | declspecs_sc_ts_sa_ea
1306 /* A (possibly empty) sequence of type qualifiers and attributes. */
1307 maybe_type_quals_attrs:
1310 | declspecs_nosc_nots
1314 /* A type specifier (but not a type qualifier).
1315 Once we have seen one of these in a declaration,
1316 if a typedef name appears then it is being redeclared.
1318 The _reserved versions start with a reserved word and may appear anywhere
1319 in the declaration specifiers; the _nonreserved versions may only
1320 appear before any other type specifiers, and after that are (if names)
1323 FIXME: should the _nonreserved version be restricted to names being
1324 redeclared only? The other entries there relate only the GNU extensions
1325 and Objective C, and are historically parsed thus, and don't make sense
1326 after other type specifiers, but it might be cleaner to count them as
1329 _attr means: specifiers that either end with attributes,
1330 or are such that any following attributes would
1331 be parsed as part of the specifier.
1333 _nonattr: specifiers. */
1336 typespec_reserved_nonattr
1337 | typespec_nonreserved_nonattr
1341 typespec_reserved_attr
1344 typespec_reserved_nonattr:
1346 { OBJC_NEED_RAW_IDENTIFIER (1); }
1350 typespec_reserved_attr:
1354 typespec_nonreserved_nonattr:
1356 { /* For a typedef name, record the meaning, not the name.
1357 In case of `foo foo, bar;'. */
1358 $$ = lookup_name ($1); }
1360 | CLASSNAME protocolrefs
1361 { $$ = get_static_reference ($1, $2); }
1362 | OBJECTNAME protocolrefs
1363 { $$ = get_object_reference ($2); }
1365 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1366 - nisse@lysator.liu.se */
1367 | non_empty_protocolrefs
1368 { $$ = get_object_reference ($1); }
1370 | typeof '(' expr ')'
1371 { skip_evaluation--; $$ = TREE_TYPE ($3); }
1372 | typeof '(' typename ')'
1373 { skip_evaluation--; $$ = groktypename ($3); }
1376 /* typespec_nonreserved_attr does not exist. */
1380 | initdecls ',' maybe_resetattrs initdcl
1385 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1391 | ASM_KEYWORD '(' STRING ')'
1396 declarator maybeasm maybe_attribute '='
1397 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1398 chainon ($3, all_prefix_attributes));
1399 start_init ($<ttype>$, $2, global_bindings_p ()); }
1401 /* Note how the declaration of the variable is in effect while its init is parsed! */
1403 finish_decl ($<ttype>5, $6, $2); }
1404 | declarator maybeasm maybe_attribute
1405 { tree d = start_decl ($1, current_declspecs, 0,
1406 chainon ($3, all_prefix_attributes));
1407 finish_decl (d, NULL_TREE, $2);
1412 notype_declarator maybeasm maybe_attribute '='
1413 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1414 chainon ($3, all_prefix_attributes));
1415 start_init ($<ttype>$, $2, global_bindings_p ()); }
1417 /* Note how the declaration of the variable is in effect while its init is parsed! */
1419 finish_decl ($<ttype>5, $6, $2); }
1420 | notype_declarator maybeasm maybe_attribute
1421 { tree d = start_decl ($1, current_declspecs, 0,
1422 chainon ($3, all_prefix_attributes));
1423 finish_decl (d, NULL_TREE, $2); }
1425 /* the * rules are dummies to accept the Apollo extended syntax
1426 so that the header files compile. */
1437 | attributes attribute
1438 { $$ = chainon ($1, $2); }
1442 ATTRIBUTE '(' '(' attribute_list ')' ')'
1449 | attribute_list ',' attrib
1450 { $$ = chainon ($1, $3); }
1457 { $$ = build_tree_list ($1, NULL_TREE); }
1458 | any_word '(' IDENTIFIER ')'
1459 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1460 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1461 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1462 | any_word '(' exprlist ')'
1463 { $$ = build_tree_list ($1, $3); }
1466 /* This still leaves out most reserved keywords,
1467 shouldn't we include them? */
1481 /* Initializers. `init' is the entry point. */
1486 { really_start_incremental_init (NULL_TREE); }
1487 initlist_maybe_comma '}'
1488 { $$ = pop_init_level (0); }
1490 { $$ = error_mark_node; }
1493 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1494 initlist_maybe_comma:
1497 pedwarn ("ISO C forbids empty initializer braces"); }
1498 | initlist1 maybecomma
1503 | initlist1 ',' initelt
1506 /* `initelt' is a single element of an initializer.
1507 It may use braces. */
1509 designator_list '=' initval
1510 { if (pedantic && ! flag_isoc99)
1511 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1512 | designator initval
1514 pedwarn ("obsolete use of designated initializer without `='"); }
1516 { set_init_label ($1);
1518 pedwarn ("obsolete use of designated initializer with `:'"); }
1526 { push_init_level (0); }
1527 initlist_maybe_comma '}'
1528 { process_init_element (pop_init_level (0)); }
1530 { process_init_element ($1); }
1536 | designator_list designator
1541 { set_init_label ($2); }
1542 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1543 { set_init_index ($2, $4);
1545 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1546 | '[' expr_no_commas ']'
1547 { set_init_index ($2, NULL_TREE); }
1553 pedwarn ("ISO C forbids nested functions");
1555 push_function_context ();
1556 if (! start_function (current_declspecs, $1,
1557 all_prefix_attributes))
1559 pop_function_context ();
1562 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1564 old_style_parm_decls save_location
1565 { tree decl = current_function_decl;
1566 set_tree_locus (decl, $4);
1567 store_parm_decls (); }
1568 /* This used to use compstmt_or_error.
1569 That caused a bug with input `f(g) int g {}',
1570 where the use of YYERROR1 above caused an error
1571 which then was handled by compstmt_or_error.
1572 There followed a repeated execution of that same rule,
1573 which called YYERROR1 again, and so on. */
1575 { tree decl = current_function_decl;
1577 pop_function_context ();
1578 add_decl_stmt (decl); }
1581 notype_nested_function:
1584 pedwarn ("ISO C forbids nested functions");
1586 push_function_context ();
1587 if (! start_function (current_declspecs, $1,
1588 all_prefix_attributes))
1590 pop_function_context ();
1593 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1595 old_style_parm_decls save_location
1596 { tree decl = current_function_decl;
1597 set_tree_locus (decl, $4);
1598 store_parm_decls (); }
1599 /* This used to use compstmt_or_error.
1600 That caused a bug with input `f(g) int g {}',
1601 where the use of YYERROR1 above caused an error
1602 which then was handled by compstmt_or_error.
1603 There followed a repeated execution of that same rule,
1604 which called YYERROR1 again, and so on. */
1606 { tree decl = current_function_decl;
1608 pop_function_context ();
1609 add_decl_stmt (decl); }
1612 /* Any kind of declarator (thus, all declarators allowed
1613 after an explicit typespec). */
1616 after_type_declarator
1620 /* A declarator that is allowed only after an explicit typespec. */
1622 after_type_declarator:
1623 '(' maybe_attribute after_type_declarator ')'
1624 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1625 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1626 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1627 /* | after_type_declarator '(' error ')' %prec '.'
1628 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1629 poplevel (0, 0, 0); } */
1630 | after_type_declarator array_declarator %prec '.'
1631 { $$ = set_array_declarator_type ($2, $1, 0); }
1632 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1633 { $$ = make_pointer_declarator ($2, $3); }
1640 /* Kinds of declarator that can appear in a parameter list
1641 in addition to notype_declarator. This is like after_type_declarator
1642 but does not allow a typedef name in parentheses as an identifier
1643 (because it would conflict with a function with that typedef as arg). */
1645 parm_declarator_starttypename
1646 | parm_declarator_nostarttypename
1649 parm_declarator_starttypename:
1650 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1651 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1652 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1653 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1654 poplevel (0, 0, 0); } */
1655 | parm_declarator_starttypename array_declarator %prec '.'
1656 { $$ = set_array_declarator_type ($2, $1, 0); }
1663 parm_declarator_nostarttypename:
1664 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1665 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1666 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1667 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1668 poplevel (0, 0, 0); } */
1669 | parm_declarator_nostarttypename array_declarator %prec '.'
1670 { $$ = set_array_declarator_type ($2, $1, 0); }
1671 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1672 { $$ = make_pointer_declarator ($2, $3); }
1673 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1674 { $$ = make_pointer_declarator ($2, $3); }
1675 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1676 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1679 /* A declarator allowed whether or not there has been
1680 an explicit typespec. These cannot redeclare a typedef-name. */
1683 notype_declarator '(' parmlist_or_identifiers %prec '.'
1684 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1685 /* | notype_declarator '(' error ')' %prec '.'
1686 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1687 poplevel (0, 0, 0); } */
1688 | '(' maybe_attribute notype_declarator ')'
1689 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1690 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1691 { $$ = make_pointer_declarator ($2, $3); }
1692 | notype_declarator array_declarator %prec '.'
1693 { $$ = set_array_declarator_type ($2, $1, 0); }
1718 /* structsp_attr: struct/union/enum specifiers that either
1719 end with attributes, or are such that any following attributes would
1720 be parsed as part of the struct/union/enum specifier.
1722 structsp_nonattr: other struct/union/enum specifiers. */
1725 struct_head identifier '{'
1726 { $$ = start_struct (RECORD_TYPE, $2);
1727 /* Start scope of tag before parsing components. */
1729 component_decl_list '}' maybe_attribute
1730 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1731 chainon ($1, $7)); }
1732 | struct_head '{' component_decl_list '}' maybe_attribute
1733 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1734 nreverse ($3), chainon ($1, $5));
1736 | union_head identifier '{'
1737 { $$ = start_struct (UNION_TYPE, $2); }
1738 component_decl_list '}' maybe_attribute
1739 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1740 chainon ($1, $7)); }
1741 | union_head '{' component_decl_list '}' maybe_attribute
1742 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1743 nreverse ($3), chainon ($1, $5));
1745 | enum_head identifier '{'
1746 { $$ = start_enum ($2); }
1747 enumlist maybecomma_warn '}' maybe_attribute
1748 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1749 chainon ($1, $8)); }
1751 { $$ = start_enum (NULL_TREE); }
1752 enumlist maybecomma_warn '}' maybe_attribute
1753 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1754 chainon ($1, $7)); }
1758 struct_head identifier
1759 { $$ = xref_tag (RECORD_TYPE, $2); }
1760 | union_head identifier
1761 { $$ = xref_tag (UNION_TYPE, $2); }
1762 | enum_head identifier
1763 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1764 /* In ISO C, enumerated types can be referred to
1765 only if already defined. */
1766 if (pedantic && !COMPLETE_TYPE_P ($$))
1767 pedwarn ("ISO C forbids forward references to `enum' types"); }
1778 { if (pedantic && ! flag_isoc99)
1779 pedwarn ("comma at end of enumerator list"); }
1782 /* We chain the components in reverse order. They are put in forward
1783 order in structsp_attr.
1785 Note that component_declarator returns single decls, so components
1786 and components_notype can use TREE_CHAIN directly, wheras components
1787 and components_notype return lists (of comma separated decls), so
1788 component_decl_list and component_decl_list2 must use chainon.
1790 The theory behind all this is that there will be more semicolon
1791 separated fields than comma separated fields, and so we'll be
1792 minimizing the number of node traversals required by chainon. */
1794 component_decl_list:
1795 component_decl_list2
1797 | component_decl_list2 component_decl
1798 { $$ = chainon ($2, $1);
1799 pedwarn ("no semicolon at end of struct or union"); }
1802 component_decl_list2: /* empty */
1804 | component_decl_list2 component_decl ';'
1805 { $$ = chainon ($2, $1); }
1806 | component_decl_list2 ';'
1808 pedwarn ("extra semicolon in struct or union specified"); }
1810 /* foo(sizeof(struct{ @defs(ClassName)})); */
1811 | DEFS '(' CLASSNAME ')'
1813 tree interface = lookup_interface ($3);
1816 $$ = nreverse (get_class_ivars (interface));
1819 error ("cannot find interface declaration for `%s'",
1820 IDENTIFIER_POINTER ($3));
1828 declspecs_nosc_ts setspecs components
1830 POP_DECLSPEC_STACK; }
1831 | declspecs_nosc_ts setspecs
1833 /* Support for unnamed structs or unions as members of
1834 structs or unions (which is [a] useful and [b] supports
1837 pedwarn ("ISO C doesn't support unnamed structs/unions");
1839 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1840 POP_DECLSPEC_STACK; }
1841 | declspecs_nosc_nots setspecs components_notype
1843 POP_DECLSPEC_STACK; }
1844 | declspecs_nosc_nots
1846 pedwarn ("ISO C forbids member declarations with no members");
1847 shadow_tag_warned ($1, pedantic);
1851 | extension component_decl
1853 RESTORE_EXT_FLAGS ($1); }
1857 component_declarator
1858 | components ',' maybe_resetattrs component_declarator
1859 { TREE_CHAIN ($4) = $1; $$ = $4; }
1863 component_notype_declarator
1864 | components_notype ',' maybe_resetattrs component_notype_declarator
1865 { TREE_CHAIN ($4) = $1; $$ = $4; }
1868 component_declarator:
1869 declarator maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1871 decl_attributes (&$$,
1872 chainon ($2, all_prefix_attributes), 0); }
1873 | declarator ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield ($1, current_declspecs, $3);
1875 decl_attributes (&$$,
1876 chainon ($4, all_prefix_attributes), 0); }
1877 | ':' expr_no_commas maybe_attribute
1878 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1879 decl_attributes (&$$,
1880 chainon ($3, all_prefix_attributes), 0); }
1883 component_notype_declarator:
1884 notype_declarator maybe_attribute
1885 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1886 decl_attributes (&$$,
1887 chainon ($2, all_prefix_attributes), 0); }
1888 | notype_declarator ':' expr_no_commas maybe_attribute
1889 { $$ = grokfield ($1, current_declspecs, $3);
1890 decl_attributes (&$$,
1891 chainon ($4, all_prefix_attributes), 0); }
1892 | ':' expr_no_commas maybe_attribute
1893 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1894 decl_attributes (&$$,
1895 chainon ($3, all_prefix_attributes), 0); }
1898 /* We chain the enumerators in reverse order.
1899 They are put in forward order in structsp_attr. */
1903 | enumlist ',' enumerator
1904 { if ($1 == error_mark_node)
1907 TREE_CHAIN ($3) = $1, $$ = $3; }
1909 { $$ = error_mark_node; }
1915 { $$ = build_enumerator ($1, NULL_TREE); }
1916 | identifier '=' expr_no_commas
1917 { $$ = build_enumerator ($1, $3); }
1922 { pending_xref_error ();
1925 { $$ = build_tree_list ($<ttype>2, $3); }
1928 absdcl: /* an absolute declarator */
1934 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 all_prefix_attributes); }
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1942 all_prefix_attributes); }
1943 | absdcl1_noea attributes
1944 { $$ = build_tree_list (build_tree_list (current_declspecs,
1946 chainon ($2, all_prefix_attributes)); }
1949 absdcl1: /* a nonempty absolute declarator */
1956 | '*' maybe_type_quals_attrs absdcl1_noea
1957 { $$ = make_pointer_declarator ($2, $3); }
1961 '*' maybe_type_quals_attrs
1962 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1963 | '*' maybe_type_quals_attrs absdcl1_ea
1964 { $$ = make_pointer_declarator ($2, $3); }
1968 '(' maybe_attribute absdcl1 ')'
1969 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1970 | direct_absdcl1 '(' parmlist
1971 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1972 | direct_absdcl1 array_declarator
1973 { $$ = set_array_declarator_type ($2, $1, 1); }
1975 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1977 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1980 /* The [...] part of a declarator for an array type. */
1983 '[' maybe_type_quals_attrs expr ']'
1984 { $$ = build_array_declarator ($3, $2, 0, 0); }
1985 | '[' maybe_type_quals_attrs ']'
1986 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1987 | '[' maybe_type_quals_attrs '*' ']'
1988 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1989 | '[' STATIC maybe_type_quals_attrs expr ']'
1990 { $$ = build_array_declarator ($4, $3, 1, 0); }
1991 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1992 | '[' declspecs_nosc_nots STATIC expr ']'
1993 { $$ = build_array_declarator ($4, $2, 1, 0); }
1996 /* A nonempty series of declarations and statements (possibly followed by
1997 some labels) that can form the body of a compound statement.
1998 NOTE: we don't allow labels on declarations; this might seem like a
1999 natural extension, but there would be a conflict between attributes
2000 on the label and prefix attributes on the declaration. */
2003 lineno_stmt_decl_or_labels_ending_stmt
2004 | lineno_stmt_decl_or_labels_ending_decl
2005 | lineno_stmt_decl_or_labels_ending_label
2007 pedwarn ("deprecated use of label at end of compound statement");
2009 | lineno_stmt_decl_or_labels_ending_error
2012 lineno_stmt_decl_or_labels_ending_stmt:
2014 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2015 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2016 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2017 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2020 lineno_stmt_decl_or_labels_ending_decl:
2022 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2024 if ((pedantic && !flag_isoc99)
2025 || warn_declaration_after_statement)
2026 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2028 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2029 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2032 lineno_stmt_decl_or_labels_ending_label:
2034 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2035 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2036 | lineno_stmt_decl_or_labels_ending_label lineno_label
2037 | lineno_stmt_decl_or_labels_ending_error lineno_label
2040 lineno_stmt_decl_or_labels_ending_error:
2042 | lineno_stmt_decl_or_labels errstmt
2045 lineno_stmt_decl_or_labels:
2046 lineno_stmt_decl_or_labels_ending_stmt
2047 | lineno_stmt_decl_or_labels_ending_decl
2048 | lineno_stmt_decl_or_labels_ending_label
2049 | lineno_stmt_decl_or_labels_ending_error
2055 pushlevel: /* empty */
2058 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2060 if (objc_method_context)
2066 poplevel: /* empty */
2067 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2070 /* Start and end blocks created for the new scopes of C99. */
2071 c99_block_start: /* empty */
2074 $$ = c_begin_compound_stmt ();
2077 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2079 if (objc_method_context)
2088 /* Productions using c99_block_start and c99_block_end will need to do what's
2089 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2090 $1 is the value of c99_block_start and $2 of c99_block_end. */
2091 c99_block_end: /* empty */
2094 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2095 $$ = poplevel (KEEP_MAYBE, 0, 0);
2096 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2097 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2104 /* Read zero or more forward-declarations for labels
2105 that nested functions can jump to. */
2110 pedwarn ("ISO C forbids label declarations"); }
2115 | label_decls label_decl
2119 LABEL identifiers_or_typenames ';'
2121 for (link = $2; link; link = TREE_CHAIN (link))
2123 tree label = declare_label (TREE_VALUE (link));
2124 C_DECLARED_LABEL_FLAG (label) = 1;
2125 add_decl_stmt (label);
2130 /* This is the body of a function definition.
2131 It causes syntax errors to ignore to the next openbrace. */
2138 compstmt_start: '{' { compstmt_count++;
2139 $$ = c_begin_compound_stmt (); }
2142 compstmt_nostart: '}'
2143 { $$ = convert (void_type_node, integer_zero_node); }
2144 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2145 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2146 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2147 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2151 compstmt_contents_nonempty:
2156 compstmt_primary_start:
2158 { if (current_function_decl == 0)
2160 error ("braced-group within expression allowed only inside a function");
2163 /* We must force a BLOCK for this level
2164 so that, if it is not expanded later,
2165 there is a way to turn off the entire subtree of blocks
2166 that are contained in it. */
2169 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2173 compstmt: compstmt_start compstmt_nostart
2174 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2175 last_expr_type = NULL_TREE;
2179 /* Value is number of statements counted as of the closeparen. */
2181 if_prefix c99_block_lineno_labeled_stmt
2182 { c_finish_then (); }
2183 /* Make sure c_expand_end_cond is run once
2184 for each call to c_expand_start_cond.
2185 Otherwise a crash is likely. */
2190 /* We must build the IF_STMT node before parsing its
2191 condition so that STMT_LINENO refers to the line
2192 containing the "if", and not the line containing
2193 the close-parenthesis.
2195 c_begin_if_stmt returns the IF_STMT node, which
2196 we later pass to c_expand_start_cond to fill
2197 in the condition and other tidbits. */
2199 { $<ttype>$ = c_begin_if_stmt (); }
2201 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2202 compstmt_count,$<ttype>2);
2203 $<itype>$ = stmt_count;
2204 if_stmt_locus = $<location>-1; }
2207 /* This is a subroutine of stmt.
2208 It is used twice, once for valid DO statements
2209 and once for catching errors in parsing the end test. */
2215 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2217 /* In the event that a parse error prevents
2218 parsing the complete do-statement, set the
2219 condition now. Otherwise, we can get crashes at
2220 RTL-generation time. */
2221 DO_COND ($<ttype>$) = error_mark_node; }
2222 c99_block_lineno_labeled_stmt WHILE
2224 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2227 /* The forced readahead in here is because we might be at the end of a
2228 line, and the line and file won't be bumped until yylex absorbs the
2229 first token on the next line. */
2232 { if (yychar == YYEMPTY)
2234 $$ = input_location; }
2237 lineno_labeled_stmt:
2239 | lineno_label lineno_labeled_stmt
2242 /* Like lineno_labeled_stmt, but a block in C99. */
2243 c99_block_lineno_labeled_stmt:
2244 c99_block_start lineno_labeled_stmt c99_block_end
2246 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2253 STMT_LINENO ($2) = $1.line;
2254 /* ??? We currently have no way of recording
2255 the filename for a statement. This probably
2256 matters little in practice at the moment,
2257 but I suspect that problems will occur when
2258 doing inlining at the tree level. */
2267 STMT_LINENO ($2) = $1.line;
2272 select_or_iter_stmt:
2274 { c_expand_start_else ();
2275 $<itype>1 = stmt_count; }
2276 c99_block_lineno_labeled_stmt
2278 c_expand_end_cond ();
2279 if (extra_warnings && stmt_count == $<itype>1)
2280 warning ("empty body in an else-statement"); }
2281 | simple_if %prec IF
2282 { c_expand_end_cond ();
2283 /* This warning is here instead of in simple_if, because we
2284 do not want a warning if an empty if is followed by an
2285 else statement. Increment stmt_count so we don't
2286 give a second error if this is a nested `if'. */
2287 if (extra_warnings && stmt_count++ == $<itype>1)
2288 warning ("%Hempty body in an if-statement",
2290 /* Make sure c_expand_end_cond is run once
2291 for each call to c_expand_start_cond.
2292 Otherwise a crash is likely. */
2293 | simple_if ELSE error
2294 { c_expand_end_cond (); }
2295 /* We must build the WHILE_STMT node before parsing its
2296 condition so that STMT_LINENO refers to the line
2297 containing the "while", and not the line containing
2298 the close-parenthesis.
2300 c_begin_while_stmt returns the WHILE_STMT node, which
2301 we later pass to c_finish_while_stmt_cond to fill
2302 in the condition and other tidbits. */
2305 $<ttype>$ = c_begin_while_stmt (); }
2307 { $4 = c_common_truthvalue_conversion ($4);
2308 c_finish_while_stmt_cond
2309 (c_common_truthvalue_conversion ($4), $<ttype>2);
2310 $<ttype>$ = add_stmt ($<ttype>2); }
2311 c99_block_lineno_labeled_stmt
2312 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2315 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2316 | do_stmt_start error
2319 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2320 NULL_TREE, NULL_TREE);
2321 add_stmt ($<ttype>$); }
2324 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2327 FOR_COND ($<ttype>2)
2328 = c_common_truthvalue_conversion ($6); }
2330 { FOR_EXPR ($<ttype>2) = $9; }
2331 c99_block_lineno_labeled_stmt
2332 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2333 | SWITCH '(' expr ')'
2335 $<ttype>$ = c_start_case ($3); }
2336 c99_block_lineno_labeled_stmt
2337 { c_finish_case (); }
2342 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2344 { check_for_loop_decls (); }
2347 /* Parse a single real statement, not including any labels. */
2350 { stmt_count++; $$ = $1; }
2353 $$ = c_expand_expr_stmt ($1); }
2354 | c99_block_start select_or_iter_stmt c99_block_end
2356 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2360 $$ = add_stmt (build_break_stmt ()); }
2363 $$ = add_stmt (build_continue_stmt ()); }
2366 $$ = c_expand_return (NULL_TREE); }
2369 $$ = c_expand_return ($2); }
2370 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2372 $$ = simple_asm_stmt ($4); }
2373 /* This is the case with just output operands. */
2374 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2376 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2377 /* This is the case with input operands as well. */
2378 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2379 asm_operands ')' ';'
2381 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2382 /* This is the case with clobbered registers as well. */
2383 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2384 asm_operands ':' asm_clobbers ')' ';'
2386 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2387 | GOTO identifier ';'
2390 decl = lookup_label ($2);
2393 TREE_USED (decl) = 1;
2394 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2401 pedwarn ("ISO C forbids `goto *expr;'");
2403 $3 = convert (ptr_type_node, $3);
2404 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2409 /* Any kind of label, including jump labels and case labels.
2410 ANSI C accepts labels only before statements, but we allow them
2411 also at the end of a compound statement. */
2413 label: CASE expr_no_commas ':'
2415 $$ = do_case ($2, NULL_TREE); }
2416 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2418 $$ = do_case ($2, $4); }
2421 $$ = do_case (NULL_TREE, NULL_TREE); }
2422 | identifier save_location ':' maybe_attribute
2423 { tree label = define_label ($2, $1);
2427 decl_attributes (&label, $4, 0);
2428 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2435 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2439 { emit_line_note (input_location);
2442 { emit_line_note (input_location); }
2451 /* These are the operands other than the first string and colon
2452 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2453 asm_operands: /* empty */
2455 | nonnull_asm_operands
2458 nonnull_asm_operands:
2460 | nonnull_asm_operands ',' asm_operand
2461 { $$ = chainon ($1, $3); }
2466 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2467 | '[' identifier ']' STRING '(' expr ')'
2468 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2469 IDENTIFIER_POINTER ($2));
2470 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2475 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2476 | asm_clobbers ',' STRING
2477 { $$ = tree_cons (NULL_TREE, $3, $1); }
2480 /* This is what appears inside the parens in a function declarator.
2481 Its value is a list of ..._TYPE nodes. Attributes must appear here
2482 to avoid a conflict with their appearance after an open parenthesis
2483 in an abstract declarator, as in
2484 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2488 declare_parm_level (); }
2491 poplevel (0, 0, 0); }
2497 { mark_forward_parm_decls (); }
2499 { /* Dummy action so attributes are in known place
2500 on parser stack. */ }
2504 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2507 /* This is what appears inside the parens in a function declarator.
2508 Is value is represented in the format that grokdeclarator expects. */
2509 parmlist_2: /* empty */
2510 { $$ = get_parm_info (0); }
2512 { $$ = get_parm_info (0);
2513 /* Gcc used to allow this as an extension. However, it does
2514 not work for all targets, and thus has been disabled.
2515 Also, since func (...) and func () are indistinguishable,
2516 it caused problems with the code in expand_builtin which
2517 tries to verify that BUILT_IN_NEXT_ARG is being used
2519 error ("ISO C requires a named argument before `...'");
2522 { $$ = get_parm_info (1);
2523 parsing_iso_function_signature = true;
2525 | parms ',' ELLIPSIS
2526 { $$ = get_parm_info (0); }
2531 { push_parm_decl ($1); }
2533 { push_parm_decl ($3); }
2536 /* A single parameter declaration or parameter type name,
2537 as found in a parmlist. */
2539 declspecs_ts setspecs parm_declarator maybe_attribute
2540 { $$ = build_tree_list (build_tree_list (current_declspecs,
2542 chainon ($4, all_prefix_attributes));
2543 POP_DECLSPEC_STACK; }
2544 | declspecs_ts setspecs notype_declarator maybe_attribute
2545 { $$ = build_tree_list (build_tree_list (current_declspecs,
2547 chainon ($4, all_prefix_attributes));
2548 POP_DECLSPEC_STACK; }
2549 | declspecs_ts setspecs absdcl_maybe_attribute
2551 POP_DECLSPEC_STACK; }
2552 | declspecs_nots setspecs notype_declarator maybe_attribute
2553 { $$ = build_tree_list (build_tree_list (current_declspecs,
2555 chainon ($4, all_prefix_attributes));
2556 POP_DECLSPEC_STACK; }
2558 | declspecs_nots setspecs absdcl_maybe_attribute
2560 POP_DECLSPEC_STACK; }
2563 /* The first parm, which must suck attributes from off the top of the parser
2566 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2567 { $$ = build_tree_list (build_tree_list (current_declspecs,
2569 chainon ($4, all_prefix_attributes));
2570 POP_DECLSPEC_STACK; }
2571 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2572 { $$ = build_tree_list (build_tree_list (current_declspecs,
2574 chainon ($4, all_prefix_attributes));
2575 POP_DECLSPEC_STACK; }
2576 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2578 POP_DECLSPEC_STACK; }
2579 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2580 { $$ = build_tree_list (build_tree_list (current_declspecs,
2582 chainon ($4, all_prefix_attributes));
2583 POP_DECLSPEC_STACK; }
2585 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2587 POP_DECLSPEC_STACK; }
2592 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2593 all_prefix_attributes = prefix_attributes; }
2596 /* This is used in a function definition
2597 where either a parmlist or an identifier list is ok.
2598 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2599 parmlist_or_identifiers:
2602 declare_parm_level (); }
2603 parmlist_or_identifiers_1
2605 poplevel (0, 0, 0); }
2608 parmlist_or_identifiers_1:
2612 for (t = $1; t; t = TREE_CHAIN (t))
2613 if (TREE_VALUE (t) == NULL_TREE)
2614 error ("`...' in old-style identifier list");
2615 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2617 /* Make sure we have a parmlist after attributes. */
2619 && (TREE_CODE ($$) != TREE_LIST
2620 || TREE_PURPOSE ($$) == 0
2621 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2626 /* A nonempty list of identifiers. */
2629 { $$ = build_tree_list (NULL_TREE, $1); }
2630 | identifiers ',' IDENTIFIER
2631 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2634 /* A nonempty list of identifiers, including typenames. */
2635 identifiers_or_typenames:
2637 { $$ = build_tree_list (NULL_TREE, $1); }
2638 | identifiers_or_typenames ',' identifier
2639 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2644 { $$ = SAVE_EXT_FLAGS();
2646 warn_pointer_arith = 0;
2647 warn_traditional = 0;
2652 /* Objective-C productions. */
2662 if (objc_implementation_context)
2664 finish_class (objc_implementation_context);
2665 objc_ivar_chain = NULL_TREE;
2666 objc_implementation_context = NULL_TREE;
2669 warning ("`@end' must appear in an implementation context");
2673 /* A nonempty list of identifiers. */
2676 { $$ = build_tree_list (NULL_TREE, $1); }
2677 | identifier_list ',' identifier
2678 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2682 CLASS identifier_list ';'
2684 objc_declare_class ($2);
2689 ALIAS identifier identifier ';'
2691 objc_declare_alias ($2, $3);
2696 INTERFACE identifier protocolrefs '{'
2698 objc_interface_context = objc_ivar_context
2699 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2700 objc_public_flag = 0;
2704 continue_class (objc_interface_context);
2709 finish_class (objc_interface_context);
2710 objc_interface_context = NULL_TREE;
2713 | INTERFACE identifier protocolrefs
2715 objc_interface_context
2716 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2717 continue_class (objc_interface_context);
2722 finish_class (objc_interface_context);
2723 objc_interface_context = NULL_TREE;
2726 | INTERFACE identifier ':' identifier protocolrefs '{'
2728 objc_interface_context = objc_ivar_context
2729 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2730 objc_public_flag = 0;
2734 continue_class (objc_interface_context);
2739 finish_class (objc_interface_context);
2740 objc_interface_context = NULL_TREE;
2743 | INTERFACE identifier ':' identifier protocolrefs
2745 objc_interface_context
2746 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2747 continue_class (objc_interface_context);
2752 finish_class (objc_interface_context);
2753 objc_interface_context = NULL_TREE;
2756 | IMPLEMENTATION identifier '{'
2758 objc_implementation_context = objc_ivar_context
2759 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2760 objc_public_flag = 0;
2765 = continue_class (objc_implementation_context);
2768 | IMPLEMENTATION identifier
2770 objc_implementation_context
2771 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2773 = continue_class (objc_implementation_context);
2776 | IMPLEMENTATION identifier ':' identifier '{'
2778 objc_implementation_context = objc_ivar_context
2779 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2780 objc_public_flag = 0;
2785 = continue_class (objc_implementation_context);
2788 | IMPLEMENTATION identifier ':' identifier
2790 objc_implementation_context
2791 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2793 = continue_class (objc_implementation_context);
2796 | INTERFACE identifier '(' identifier ')' protocolrefs
2798 objc_interface_context
2799 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2800 continue_class (objc_interface_context);
2805 finish_class (objc_interface_context);
2806 objc_interface_context = NULL_TREE;
2809 | IMPLEMENTATION identifier '(' identifier ')'
2811 objc_implementation_context
2812 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2814 = continue_class (objc_implementation_context);
2819 PROTOCOL identifier protocolrefs
2821 objc_pq_context = 1;
2822 objc_interface_context
2823 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2827 objc_pq_context = 0;
2828 finish_protocol(objc_interface_context);
2829 objc_interface_context = NULL_TREE;
2831 /* The @protocol forward-declaration production introduces a
2832 reduce/reduce conflict on ';', which should be resolved in
2833 favor of the production 'identifier_list -> identifier'. */
2834 | PROTOCOL identifier_list ';'
2836 objc_declare_protocols ($2);
2845 | non_empty_protocolrefs
2848 non_empty_protocolrefs:
2849 ARITHCOMPARE identifier_list ARITHCOMPARE
2851 if ($1 == LT_EXPR && $3 == GT_EXPR)
2859 ivar_decl_list visibility_spec ivar_decls
2864 PRIVATE { objc_public_flag = 2; }
2865 | PROTECTED { objc_public_flag = 0; }
2866 | PUBLIC { objc_public_flag = 1; }
2874 | ivar_decls ivar_decl ';'
2878 pedwarn ("extra semicolon in struct or union specified");
2883 /* There is a shift-reduce conflict here, because `components' may
2884 start with a `typename'. It happens that shifting (the default resolution)
2885 does the right thing, because it treats the `typename' as part of
2886 a `typed_typespecs'.
2888 It is possible that this same technique would allow the distinction
2889 between `notype_initdecls' and `initdecls' to be eliminated.
2890 But I am being cautious and not trying it. */
2893 declspecs_nosc_ts setspecs ivars
2895 POP_DECLSPEC_STACK; }
2896 | declspecs_nosc_nots setspecs ivars
2898 POP_DECLSPEC_STACK; }
2907 | ivars ',' maybe_resetattrs ivar_declarator
2913 $$ = add_instance_variable (objc_ivar_context,
2915 $1, current_declspecs,
2918 | declarator ':' expr_no_commas
2920 $$ = add_instance_variable (objc_ivar_context,
2922 $1, current_declspecs, $3);
2924 | ':' expr_no_commas
2926 $$ = add_instance_variable (objc_ivar_context,
2929 current_declspecs, $2);
2935 { objc_inherit_code = CLASS_METHOD_DECL; }
2937 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2943 objc_pq_context = 1;
2944 if (!objc_implementation_context)
2945 fatal_error ("method definition not in class context");
2949 objc_pq_context = 0;
2950 if (objc_inherit_code == CLASS_METHOD_DECL)
2951 add_class_method (objc_implementation_context, $3);
2953 add_instance_method (objc_implementation_context, $3);
2954 start_method_def ($3);
2958 continue_method_def ();
2962 finish_method_def ();
2966 /* the reason for the strange actions in this rule
2967 is so that notype_initdecls when reached via datadef
2968 can find a valid list of type and sc specs in $0. */
2972 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2975 methodprotolist2: /* eliminates a shift/reduce conflict */
2978 | methodprotolist2 methodproto
2979 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2990 /* Remember protocol qualifiers in prototypes. */
2991 objc_pq_context = 1;
2995 /* Forget protocol qualifiers here. */
2996 objc_pq_context = 0;
2997 if (objc_inherit_code == CLASS_METHOD_DECL)
2998 add_class_method (objc_interface_context, $3);
3000 add_instance_method (objc_interface_context, $3);
3006 '(' typename ')' unaryselector
3008 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3013 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3016 | '(' typename ')' keywordselector optparmlist
3018 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3021 | keywordselector optparmlist
3023 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3027 /* "optarglist" assumes that start_method_def has already been called...
3028 if it is not, the "xdecls" will not be placed in the proper scope */
3035 /* to get around the following situation: "int foo (int a) int b; {}" that
3036 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3051 declspecs_ts setspecs myparms ';'
3052 { POP_DECLSPEC_STACK; }
3054 { shadow_tag ($1); }
3055 | declspecs_nots ';'
3056 { pedwarn ("empty declaration"); }
3061 { push_parm_decl ($1); }
3062 | myparms ',' myparm
3063 { push_parm_decl ($3); }
3066 /* A single parameter declaration or parameter type name,
3067 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3070 parm_declarator maybe_attribute
3071 { $$ = build_tree_list (build_tree_list (current_declspecs,
3073 chainon ($2, all_prefix_attributes)); }
3074 | notype_declarator maybe_attribute
3075 { $$ = build_tree_list (build_tree_list (current_declspecs,
3077 chainon ($2, all_prefix_attributes)); }
3078 | absdcl_maybe_attribute
3089 /* oh what a kludge! */
3090 $$ = objc_ellipsis_node;
3098 /* returns a tree list node generated by get_parm_info */
3111 | keywordselector keyworddecl
3113 $$ = chainon ($1, $2);
3126 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3127 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3128 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3129 | TYPESPEC | TYPE_QUAL
3133 selector ':' '(' typename ')' identifier
3135 $$ = build_keyword_decl ($1, $4, $6);
3138 | selector ':' identifier
3140 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3143 | ':' '(' typename ')' identifier
3145 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3150 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3161 | keywordarglist keywordarg
3163 $$ = chainon ($1, $2);
3171 if (TREE_CHAIN ($1) == NULL_TREE)
3172 /* just return the expr., remove a level of indirection */
3173 $$ = TREE_VALUE ($1);
3175 /* we have a comma expr., we will collapse later */
3181 selector ':' keywordexpr
3183 $$ = build_tree_list ($1, $3);
3187 $$ = build_tree_list (NULL_TREE, $2);
3195 $$ = get_class_reference ($1);
3200 '[' receiver messageargs ']'
3201 { $$ = build_tree_list ($2, $3); }
3211 | keywordnamelist keywordname
3213 $$ = chainon ($1, $2);
3220 $$ = build_tree_list ($1, NULL_TREE);
3224 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3229 SELECTOR '(' selectorarg ')'
3236 PROTOCOL '(' identifier ')'
3242 /* extension to support C-structures in the archiver */
3245 ENCODE '(' typename ')'
3247 $$ = groktypename ($3);
3254 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3255 cpplib.h's token codes into yacc's token codes. */
3257 static enum cpp_ttype last_token;
3259 /* The reserved keyword table. */
3263 ENUM_BITFIELD(rid) rid : 16;
3264 unsigned int disable : 16;
3267 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3269 #define D_C89 0x01 /* not in C89 */
3270 #define D_EXT 0x02 /* GCC extension */
3271 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3272 #define D_OBJC 0x08 /* Objective C only */
3274 static const struct resword reswords[] =
3276 { "_Bool", RID_BOOL, 0 },
3277 { "_Complex", RID_COMPLEX, 0 },
3278 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3279 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3280 { "__alignof", RID_ALIGNOF, 0 },
3281 { "__alignof__", RID_ALIGNOF, 0 },
3282 { "__asm", RID_ASM, 0 },
3283 { "__asm__", RID_ASM, 0 },
3284 { "__attribute", RID_ATTRIBUTE, 0 },
3285 { "__attribute__", RID_ATTRIBUTE, 0 },
3286 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3287 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3288 { "__builtin_va_arg", RID_VA_ARG, 0 },
3289 { "__complex", RID_COMPLEX, 0 },
3290 { "__complex__", RID_COMPLEX, 0 },
3291 { "__const", RID_CONST, 0 },
3292 { "__const__", RID_CONST, 0 },
3293 { "__extension__", RID_EXTENSION, 0 },
3294 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3295 { "__imag", RID_IMAGPART, 0 },
3296 { "__imag__", RID_IMAGPART, 0 },
3297 { "__inline", RID_INLINE, 0 },
3298 { "__inline__", RID_INLINE, 0 },
3299 { "__label__", RID_LABEL, 0 },
3300 { "__ptrbase", RID_PTRBASE, 0 },
3301 { "__ptrbase__", RID_PTRBASE, 0 },
3302 { "__ptrextent", RID_PTREXTENT, 0 },
3303 { "__ptrextent__", RID_PTREXTENT, 0 },
3304 { "__ptrvalue", RID_PTRVALUE, 0 },
3305 { "__ptrvalue__", RID_PTRVALUE, 0 },
3306 { "__real", RID_REALPART, 0 },
3307 { "__real__", RID_REALPART, 0 },
3308 { "__restrict", RID_RESTRICT, 0 },
3309 { "__restrict__", RID_RESTRICT, 0 },
3310 { "__signed", RID_SIGNED, 0 },
3311 { "__signed__", RID_SIGNED, 0 },
3312 { "__thread", RID_THREAD, 0 },
3313 { "__typeof", RID_TYPEOF, 0 },
3314 { "__typeof__", RID_TYPEOF, 0 },
3315 { "__volatile", RID_VOLATILE, 0 },
3316 { "__volatile__", RID_VOLATILE, 0 },
3317 { "asm", RID_ASM, D_EXT },
3318 { "auto", RID_AUTO, 0 },
3319 { "break", RID_BREAK, 0 },
3320 { "case", RID_CASE, 0 },
3321 { "char", RID_CHAR, 0 },
3322 { "const", RID_CONST, 0 },
3323 { "continue", RID_CONTINUE, 0 },
3324 { "default", RID_DEFAULT, 0 },
3325 { "do", RID_DO, 0 },
3326 { "double", RID_DOUBLE, 0 },
3327 { "else", RID_ELSE, 0 },
3328 { "enum", RID_ENUM, 0 },
3329 { "extern", RID_EXTERN, 0 },
3330 { "float", RID_FLOAT, 0 },
3331 { "for", RID_FOR, 0 },
3332 { "goto", RID_GOTO, 0 },
3333 { "if", RID_IF, 0 },
3334 { "inline", RID_INLINE, D_EXT89 },
3335 { "int", RID_INT, 0 },
3336 { "long", RID_LONG, 0 },
3337 { "register", RID_REGISTER, 0 },
3338 { "restrict", RID_RESTRICT, D_C89 },
3339 { "return", RID_RETURN, 0 },
3340 { "short", RID_SHORT, 0 },
3341 { "signed", RID_SIGNED, 0 },
3342 { "sizeof", RID_SIZEOF, 0 },
3343 { "static", RID_STATIC, 0 },
3344 { "struct", RID_STRUCT, 0 },
3345 { "switch", RID_SWITCH, 0 },
3346 { "typedef", RID_TYPEDEF, 0 },
3347 { "typeof", RID_TYPEOF, D_EXT },
3348 { "union", RID_UNION, 0 },
3349 { "unsigned", RID_UNSIGNED, 0 },
3350 { "void", RID_VOID, 0 },
3351 { "volatile", RID_VOLATILE, 0 },
3352 { "while", RID_WHILE, 0 },
3354 { "id", RID_ID, D_OBJC },
3356 /* These objc keywords are recognized only immediately after
3358 { "class", RID_AT_CLASS, D_OBJC },
3359 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3360 { "defs", RID_AT_DEFS, D_OBJC },
3361 { "encode", RID_AT_ENCODE, D_OBJC },
3362 { "end", RID_AT_END, D_OBJC },
3363 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3364 { "interface", RID_AT_INTERFACE, D_OBJC },
3365 { "private", RID_AT_PRIVATE, D_OBJC },
3366 { "protected", RID_AT_PROTECTED, D_OBJC },
3367 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3368 { "public", RID_AT_PUBLIC, D_OBJC },
3369 { "selector", RID_AT_SELECTOR, D_OBJC },
3371 /* These are recognized only in protocol-qualifier context
3373 { "bycopy", RID_BYCOPY, D_OBJC },
3374 { "byref", RID_BYREF, D_OBJC },
3375 { "in", RID_IN, D_OBJC },
3376 { "inout", RID_INOUT, D_OBJC },
3377 { "oneway", RID_ONEWAY, D_OBJC },
3378 { "out", RID_OUT, D_OBJC },
3381 #define N_reswords (sizeof reswords / sizeof (struct resword))
3383 /* Table mapping from RID_* constants to yacc token numbers.
3384 Unfortunately we have to have entries for all the keywords in all
3386 static const short rid_to_yy[RID_MAX] =
3388 /* RID_STATIC */ STATIC,
3389 /* RID_UNSIGNED */ TYPESPEC,
3390 /* RID_LONG */ TYPESPEC,
3391 /* RID_CONST */ TYPE_QUAL,
3392 /* RID_EXTERN */ SCSPEC,
3393 /* RID_REGISTER */ SCSPEC,
3394 /* RID_TYPEDEF */ SCSPEC,
3395 /* RID_SHORT */ TYPESPEC,
3396 /* RID_INLINE */ SCSPEC,
3397 /* RID_VOLATILE */ TYPE_QUAL,
3398 /* RID_SIGNED */ TYPESPEC,
3399 /* RID_AUTO */ SCSPEC,
3400 /* RID_RESTRICT */ TYPE_QUAL,
3403 /* RID_COMPLEX */ TYPESPEC,
3404 /* RID_THREAD */ SCSPEC,
3408 /* RID_VIRTUAL */ 0,
3409 /* RID_EXPLICIT */ 0,
3411 /* RID_MUTABLE */ 0,
3414 /* RID_IN */ TYPE_QUAL,
3415 /* RID_OUT */ TYPE_QUAL,
3416 /* RID_INOUT */ TYPE_QUAL,
3417 /* RID_BYCOPY */ TYPE_QUAL,
3418 /* RID_BYREF */ TYPE_QUAL,
3419 /* RID_ONEWAY */ TYPE_QUAL,
3422 /* RID_INT */ TYPESPEC,
3423 /* RID_CHAR */ TYPESPEC,
3424 /* RID_FLOAT */ TYPESPEC,
3425 /* RID_DOUBLE */ TYPESPEC,
3426 /* RID_VOID */ TYPESPEC,
3427 /* RID_ENUM */ ENUM,
3428 /* RID_STRUCT */ STRUCT,
3429 /* RID_UNION */ UNION,
3431 /* RID_ELSE */ ELSE,
3432 /* RID_WHILE */ WHILE,
3435 /* RID_SWITCH */ SWITCH,
3436 /* RID_CASE */ CASE,
3437 /* RID_DEFAULT */ DEFAULT,
3438 /* RID_BREAK */ BREAK,
3439 /* RID_CONTINUE */ CONTINUE,
3440 /* RID_RETURN */ RETURN,
3441 /* RID_GOTO */ GOTO,
3442 /* RID_SIZEOF */ SIZEOF,
3445 /* RID_ASM */ ASM_KEYWORD,
3446 /* RID_TYPEOF */ TYPEOF,
3447 /* RID_ALIGNOF */ ALIGNOF,
3448 /* RID_ATTRIBUTE */ ATTRIBUTE,
3449 /* RID_VA_ARG */ VA_ARG,
3450 /* RID_EXTENSION */ EXTENSION,
3451 /* RID_IMAGPART */ IMAGPART,
3452 /* RID_REALPART */ REALPART,
3453 /* RID_LABEL */ LABEL,
3454 /* RID_PTRBASE */ PTR_BASE,
3455 /* RID_PTREXTENT */ PTR_EXTENT,
3456 /* RID_PTRVALUE */ PTR_VALUE,
3458 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3459 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3461 /* RID_FUNCTION_NAME */ FUNC_NAME,
3462 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3463 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3466 /* RID_BOOL */ TYPESPEC,
3470 /* RID_PRIVATE */ 0,
3471 /* RID_PROTECTED */ 0,
3472 /* RID_TEMPLATE */ 0,
3477 /* RID_NAMESPACE */ 0,
3479 /* RID_OPERATOR */ 0,
3484 /* RID_TYPENAME */ 0,
3489 /* RID_CONSTCAST */ 0,
3490 /* RID_DYNCAST */ 0,
3491 /* RID_REINTCAST */ 0,
3492 /* RID_STATCAST */ 0,
3495 /* RID_ID */ OBJECTNAME,
3496 /* RID_AT_ENCODE */ ENCODE,
3497 /* RID_AT_END */ END,
3498 /* RID_AT_CLASS */ CLASS,
3499 /* RID_AT_ALIAS */ ALIAS,
3500 /* RID_AT_DEFS */ DEFS,
3501 /* RID_AT_PRIVATE */ PRIVATE,
3502 /* RID_AT_PROTECTED */ PROTECTED,
3503 /* RID_AT_PUBLIC */ PUBLIC,
3504 /* RID_AT_PROTOCOL */ PROTOCOL,
3505 /* RID_AT_SELECTOR */ SELECTOR,
3506 /* RID_AT_INTERFACE */ INTERFACE,
3507 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3511 init_reswords (void)
3515 int mask = (flag_isoc99 ? 0 : D_C89)
3516 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3518 if (!c_dialect_objc ())
3521 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3522 for (i = 0; i < N_reswords; i++)
3524 /* If a keyword is disabled, do not enter it into the table
3525 and so create a canonical spelling that isn't a keyword. */
3526 if (reswords[i].disable & mask)
3529 id = get_identifier (reswords[i].word);
3530 C_RID_CODE (id) = reswords[i].rid;
3531 C_IS_RESERVED_WORD (id) = 1;
3532 ridpointers [(int) reswords[i].rid] = id;
3536 #define NAME(type) cpp_type2name (type)
3539 yyerror (const char *msgid)
3541 const char *string = _(msgid);
3543 if (last_token == CPP_EOF)
3544 error ("%s at end of input", string);
3545 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3547 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3548 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3549 if (val <= UCHAR_MAX && ISGRAPH (val))
3550 error ("%s before %s'%c'", string, ell, val);
3552 error ("%s before %s'\\x%x'", string, ell, val);
3554 else if (last_token == CPP_STRING
3555 || last_token == CPP_WSTRING)
3556 error ("%s before string constant", string);
3557 else if (last_token == CPP_NUMBER)
3558 error ("%s before numeric constant", string);
3559 else if (last_token == CPP_NAME)
3560 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3562 error ("%s before '%s' token", string, NAME(last_token));
3571 int objc_force_identifier = objc_need_raw_identifier;
3572 OBJC_NEED_RAW_IDENTIFIER (0);
3575 if (C_IS_RESERVED_WORD (yylval.ttype))
3577 enum rid rid_code = C_RID_CODE (yylval.ttype);
3580 /* Turn non-typedefed refs to "id" into plain identifiers; this
3581 allows constructs like "void foo(id id);" to work. */
3582 if (rid_code == RID_ID)
3584 decl = lookup_name (yylval.ttype);
3585 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3589 if (!OBJC_IS_AT_KEYWORD (rid_code)
3590 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3593 /* Return the canonical spelling for this keyword. */
3594 yylval.ttype = ridpointers[(int) rid_code];
3595 return rid_to_yy[(int) rid_code];
3599 decl = lookup_name (yylval.ttype);
3602 if (TREE_CODE (decl) == TYPE_DECL)
3608 tree objc_interface_decl = is_class_name (yylval.ttype);
3609 /* ObjC class names are in the same namespace as variables and
3610 typedefs, and hence are shadowed by local declarations. */
3611 if (objc_interface_decl
3612 && (global_bindings_p ()
3613 || (!objc_force_identifier && !decl)))
3615 yylval.ttype = objc_interface_decl;
3628 last_token = c_lex (&yylval.ttype);
3631 case CPP_EQ: return '=';
3632 case CPP_NOT: return '!';
3633 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3634 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3635 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3636 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3637 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3638 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3639 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3640 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3641 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3642 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3643 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3644 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3646 case CPP_COMPL: return '~';
3647 case CPP_AND_AND: return ANDAND;
3648 case CPP_OR_OR: return OROR;
3649 case CPP_QUERY: return '?';
3650 case CPP_OPEN_PAREN: return '(';
3651 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3652 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3653 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3654 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3656 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3657 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3658 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3659 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3660 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3661 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3662 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3663 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3664 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3665 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3667 case CPP_OPEN_SQUARE: return '[';
3668 case CPP_CLOSE_SQUARE: return ']';
3669 case CPP_OPEN_BRACE: return '{';
3670 case CPP_CLOSE_BRACE: return '}';
3671 case CPP_ELLIPSIS: return ELLIPSIS;
3673 case CPP_PLUS_PLUS: return PLUSPLUS;
3674 case CPP_MINUS_MINUS: return MINUSMINUS;
3675 case CPP_DEREF: return POINTSAT;
3676 case CPP_DOT: return '.';
3678 /* The following tokens may affect the interpretation of any
3679 identifiers following, if doing Objective-C. */
3680 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3681 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3682 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3683 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3689 return yylexname ();
3692 /* This only happens in Objective-C; it must be a keyword. */
3693 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3704 case CPP_OBJC_STRING:
3707 /* These tokens are C++ specific (and will not be generated
3708 in C mode, but let's be cautious). */
3710 case CPP_DEREF_STAR:
3716 /* These tokens should not survive translation phase 4. */
3719 error ("syntax error at '%s' token", NAME(last_token));
3732 timevar_push (TV_LEX);
3734 timevar_pop (TV_LEX);
3738 /* Function used when yydebug is set, to print a token in more detail. */
3741 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3745 fprintf (file, " [%s]", NAME(last_token));
3756 if (IDENTIFIER_POINTER (t))
3757 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3761 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3762 if (TREE_CODE (t) == INTEGER_CST)
3765 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3766 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3772 /* This is not the ideal place to put these, but we have to get them out
3773 of c-lex.c because cp/lex.c has its own versions. */
3775 /* Free malloced parser stacks if necessary. */
3778 free_parser_stacks (void)
3782 /* Parse the file. */
3787 /* In case there were missing closebraces, get us back to the global
3789 while (! global_bindings_p ())
3791 /* __FUNCTION__ is defined at file scope (""). This
3792 call may not be necessary as my tests indicate it
3793 still works without it. */
3794 finish_fname_decls ();
3798 free (malloced_yyss);
3799 free (malloced_yyvs);
3804 #include "gt-c-parse.h"