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 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
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. */
51 #ifdef MULTIBYTE_CHARS
59 /* Since parsers are distinct for each language, put the language string
62 const char * const language_string = "GNU Obj-C";
65 const char * const language_string = "GNU C";
68 /* Like YYERROR but do call yyerror. */
69 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
71 /* Cause the `yydebug' variable to be defined. */
77 %union {long itype; tree ttype; enum tree_code code;
78 const char *filename; int lineno; int ends_in_label; }
80 /* All identifiers that are not reserved words
81 and are not declared typedefs in the current block */
84 /* All identifiers that are declared typedefs in the current block.
85 In some contexts, they are treated just like IDENTIFIER,
86 but they can also serve as typespecs in declarations. */
89 /* Reserved words that specify storage class.
90 yylval contains an IDENTIFIER_NODE which indicates which one. */
93 /* Reserved words that specify type.
94 yylval contains an IDENTIFIER_NODE which indicates which one. */
97 /* Reserved words that qualify type: "const", "volatile", or "restrict".
98 yylval contains an IDENTIFIER_NODE which indicates which one. */
101 /* Character or numeric constants.
102 yylval is the node for the constant. */
105 /* String constants in raw form.
106 yylval is a STRING_CST node. */
109 /* "...", used for functions with variable arglists. */
112 /* the reserved words */
113 /* SCO include files test "ASM", so use something else. */
114 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
115 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
116 %token ATTRIBUTE EXTENSION LABEL
117 %token REALPART IMAGPART VA_ARG
118 %token PTR_VALUE PTR_BASE PTR_EXTENT
120 /* Used in c-lex.c for parsing pragmas. */
123 /* Add precedence rules to solve dangling else s/r conflict */
127 /* Define the operator tokens and their precedences.
128 The value is an integer because, if used, it is the tree code
129 to use in the expression made from the operator. */
131 %right <code> ASSIGN '='
132 %right <code> '?' ':'
138 %left <code> EQCOMPARE
139 %left <code> ARITHCOMPARE
140 %left <code> LSHIFT RSHIFT
142 %left <code> '*' '/' '%'
143 %right <code> UNARY PLUSPLUS MINUSMINUS
145 %left <code> POINTSAT '.' '(' '['
147 /* The Objective-C keywords. These are included in C and in
148 Objective C, so that the token codes are the same in both. */
149 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
150 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
152 /* Objective-C string constants in raw form.
153 yylval is an OBJC_STRING_CST node. */
159 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
160 %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
161 %type <ttype> typed_declspecs reserved_declspecs
162 %type <ttype> typed_typespecs reserved_typespecquals
163 %type <ttype> declmods typespec typespecqual_reserved
164 %type <ttype> typed_declspecs_no_prefix_attr reserved_declspecs_no_prefix_attr
165 %type <ttype> declmods_no_prefix_attr
166 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual
167 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
168 %type <ttype> init maybeasm
169 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
170 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
171 %type <ttype> any_word extension
173 %type <ttype> compstmt compstmt_nostart compstmt_primary_start
175 %type <ttype> declarator
176 %type <ttype> notype_declarator after_type_declarator
177 %type <ttype> parm_declarator
179 %type <ttype> structsp component_decl_list component_decl_list2
180 %type <ttype> component_decl components component_declarator
181 %type <ttype> enumlist enumerator
182 %type <ttype> struct_head union_head enum_head
183 %type <ttype> typename absdcl absdcl1 type_quals
184 %type <ttype> xexpr parms parm identifiers
186 %type <ttype> parmlist parmlist_1 parmlist_2
187 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
188 %type <ttype> identifiers_or_typenames
190 %type <itype> setspecs
192 %type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label
194 %type <filename> save_filename
195 %type <lineno> save_lineno
198 /* the Objective-C nonterminals */
200 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
201 %type <ttype> methoddecl unaryselector keywordselector selector
202 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
203 %type <ttype> keywordexpr keywordarglist keywordarg
204 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
205 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
206 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
208 %type <ttype> CLASSNAME OBJC_STRING OBJECTNAME
212 /* Number of statements (loosely speaking) and compound statements
214 static int stmt_count;
215 static int compstmt_count;
217 /* Input file and line number of the end of the body of last simple_if;
218 used by the stmt-rule immediately after simple_if returns. */
219 static const char *if_stmt_file;
220 static int if_stmt_line;
222 /* List of types and structure classes of the current declaration. */
223 static tree current_declspecs = NULL_TREE;
224 static tree prefix_attributes = NULL_TREE;
226 /* Stack of saved values of current_declspecs and prefix_attributes. */
227 static tree declspec_stack;
229 /* For __extension__, save/restore the warning flags which are
230 controlled by __extension__. */
231 #define SAVE_WARN_FLAGS() \
232 size_int (pedantic | (warn_pointer_arith << 1))
233 #define RESTORE_WARN_FLAGS(tval) \
235 int val = tree_low_cst (tval, 0); \
236 pedantic = val & 1; \
237 warn_pointer_arith = (val >> 1) & 1; \
241 /* Objective-C specific information */
243 tree objc_interface_context;
244 tree objc_implementation_context;
245 tree objc_method_context;
246 tree objc_ivar_chain;
247 tree objc_ivar_context;
248 enum tree_code objc_inherit_code;
249 int objc_receiver_context;
250 int objc_public_flag;
254 /* Tell yyparse how to print a token's value, if yydebug is set. */
256 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
257 extern void yyprint PARAMS ((FILE *, int, YYSTYPE));
259 /* Add GC roots for variables local to this file. */
263 ggc_add_tree_root (&declspec_stack, 1);
264 ggc_add_tree_root (¤t_declspecs, 1);
265 ggc_add_tree_root (&prefix_attributes, 1);
267 ggc_add_tree_root (&objc_interface_context, 1);
268 ggc_add_tree_root (&objc_implementation_context, 1);
269 ggc_add_tree_root (&objc_method_context, 1);
270 ggc_add_tree_root (&objc_ivar_chain, 1);
271 ggc_add_tree_root (&objc_ivar_context, 1);
280 pedwarn ("ANSI C forbids an empty source file");
285 /* In case there were missing closebraces,
286 get us back to the global binding level. */
287 while (! global_bindings_p ())
293 /* the reason for the strange actions in this rule
294 is so that notype_initdecls when reached via datadef
295 can find a valid list of type and sc specs in $0. */
298 {$<ttype>$ = NULL_TREE; } extdef
299 | extdefs {$<ttype>$ = NULL_TREE; } extdef
308 | ASM_KEYWORD '(' expr ')' ';'
310 if ((TREE_CODE ($3) == ADDR_EXPR
311 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
312 || TREE_CODE ($3) == STRING_CST)
315 error ("argument of `asm' is not a constant string"); }
317 { RESTORE_WARN_FLAGS ($1); }
321 setspecs notype_initdecls ';'
323 error ("ANSI C forbids data definition with no type or storage class");
324 else if (!flag_traditional)
325 warning ("data definition has no type or storage class");
327 current_declspecs = TREE_VALUE (declspec_stack);
328 prefix_attributes = TREE_PURPOSE (declspec_stack);
329 declspec_stack = TREE_CHAIN (declspec_stack); }
330 | declmods setspecs notype_initdecls ';'
331 { current_declspecs = TREE_VALUE (declspec_stack);
332 prefix_attributes = TREE_PURPOSE (declspec_stack);
333 declspec_stack = TREE_CHAIN (declspec_stack); }
334 | typed_declspecs setspecs initdecls ';'
335 { current_declspecs = TREE_VALUE (declspec_stack);
336 prefix_attributes = TREE_PURPOSE (declspec_stack);
337 declspec_stack = TREE_CHAIN (declspec_stack); }
339 { pedwarn ("empty declaration"); }
340 | typed_declspecs ';'
346 pedwarn ("ANSI C does not allow extra `;' outside of a function"); }
350 typed_declspecs setspecs declarator
351 { if (! start_function (current_declspecs, $3,
352 prefix_attributes, NULL_TREE))
354 reinit_parse_for_function (); }
356 { store_parm_decls (); }
358 { finish_function (0);
359 current_declspecs = TREE_VALUE (declspec_stack);
360 prefix_attributes = TREE_PURPOSE (declspec_stack);
361 declspec_stack = TREE_CHAIN (declspec_stack); }
362 | typed_declspecs setspecs declarator error
363 { current_declspecs = TREE_VALUE (declspec_stack);
364 prefix_attributes = TREE_PURPOSE (declspec_stack);
365 declspec_stack = TREE_CHAIN (declspec_stack); }
366 | declmods setspecs notype_declarator
367 { if (! start_function (current_declspecs, $3,
368 prefix_attributes, NULL_TREE))
370 reinit_parse_for_function (); }
372 { store_parm_decls (); }
374 { finish_function (0);
375 current_declspecs = TREE_VALUE (declspec_stack);
376 prefix_attributes = TREE_PURPOSE (declspec_stack);
377 declspec_stack = TREE_CHAIN (declspec_stack); }
378 | declmods setspecs notype_declarator error
379 { current_declspecs = TREE_VALUE (declspec_stack);
380 prefix_attributes = TREE_PURPOSE (declspec_stack);
381 declspec_stack = TREE_CHAIN (declspec_stack); }
382 | setspecs notype_declarator
383 { if (! start_function (NULL_TREE, $2,
384 prefix_attributes, NULL_TREE))
386 reinit_parse_for_function (); }
388 { store_parm_decls (); }
390 { finish_function (0);
391 current_declspecs = TREE_VALUE (declspec_stack);
392 prefix_attributes = TREE_PURPOSE (declspec_stack);
393 declspec_stack = TREE_CHAIN (declspec_stack); }
394 | setspecs notype_declarator error
395 { current_declspecs = TREE_VALUE (declspec_stack);
396 prefix_attributes = TREE_PURPOSE (declspec_stack);
397 declspec_stack = TREE_CHAIN (declspec_stack); }
412 { $$ = NEGATE_EXPR; }
416 if (warn_traditional)
417 warning ("traditional C rejects the unary plus operator");
421 { $$ = PREINCREMENT_EXPR; }
423 { $$ = PREDECREMENT_EXPR; }
425 { $$ = BIT_NOT_EXPR; }
427 { $$ = TRUTH_NOT_EXPR; }
430 expr: nonnull_exprlist
431 { $$ = build_compound_expr ($1); }
442 { $$ = build_tree_list (NULL_TREE, $1); }
443 | nonnull_exprlist ',' expr_no_commas
444 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
449 | '*' cast_expr %prec UNARY
450 { $$ = build_indirect_ref ($2, "unary *"); }
451 /* __extension__ turns off -pedantic for following primary. */
452 | extension cast_expr %prec UNARY
454 RESTORE_WARN_FLAGS ($1); }
455 | unop cast_expr %prec UNARY
456 { $$ = build_unary_op ($1, $2, 0);
457 overflow_warning ($$); }
458 /* Refer to the address of a label as a pointer. */
460 { tree label = lookup_label ($2);
462 pedwarn ("ANSI C forbids `&&'");
464 $$ = null_pointer_node;
467 TREE_USED (label) = 1;
468 $$ = build1 (ADDR_EXPR, ptr_type_node, label);
469 TREE_CONSTANT ($$) = 1;
472 /* This seems to be impossible on some machines, so let's turn it off.
473 You can use __builtin_next_arg to find the anonymous stack args.
475 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
476 $$ = error_mark_node;
477 if (TREE_VALUE (tree_last (types)) == void_type_node)
478 error ("`&...' used in function with fixed number of arguments");
482 pedwarn ("ANSI C forbids `&...'");
483 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
484 $$ = build_unary_op (ADDR_EXPR, $$, 0);
487 | sizeof unary_expr %prec UNARY
489 if (TREE_CODE ($2) == COMPONENT_REF
490 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
491 error ("`sizeof' applied to a bit-field");
492 $$ = c_sizeof (TREE_TYPE ($2)); }
493 | sizeof '(' typename ')' %prec HYPERUNARY
495 $$ = c_sizeof (groktypename ($3)); }
496 | alignof unary_expr %prec UNARY
498 $$ = c_alignof_expr ($2); }
499 | alignof '(' typename ')' %prec HYPERUNARY
501 $$ = c_alignof (groktypename ($3)); }
502 | REALPART cast_expr %prec UNARY
503 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
504 | IMAGPART cast_expr %prec UNARY
505 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
506 | VA_ARG '(' expr_no_commas ',' typename ')'
507 { $$ = build_va_arg ($3, groktypename ($5)); }
511 SIZEOF { skip_evaluation++; }
515 ALIGNOF { skip_evaluation++; }
520 | '(' typename ')' cast_expr %prec UNARY
521 { tree type = groktypename ($2);
522 $$ = build_c_cast (type, $4); }
523 | '(' typename ')' '{'
524 { start_init (NULL_TREE, NULL, 0);
525 $2 = groktypename ($2);
526 really_start_incremental_init ($2); }
527 initlist_maybe_comma '}' %prec UNARY
529 tree result = pop_init_level (0);
533 if (pedantic && ! flag_isoc99)
534 pedwarn ("ANSI C forbids constructor expressions");
535 if (TYPE_NAME (type) != 0)
537 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
538 name = IDENTIFIER_POINTER (TYPE_NAME (type));
540 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
545 if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
547 int failure = complete_array_type (type, $$, 1);
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 '%' expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas LSHIFT expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas RSHIFT expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas ARITHCOMPARE expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas EQCOMPARE 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 { $$ = parser_build_binary_op ($2, $1, $3); }
578 | expr_no_commas '^' expr_no_commas
579 { $$ = parser_build_binary_op ($2, $1, $3); }
580 | expr_no_commas ANDAND
581 { $1 = truthvalue_conversion (default_conversion ($1));
582 skip_evaluation += $1 == boolean_false_node; }
584 { skip_evaluation -= $1 == boolean_false_node;
585 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
586 | expr_no_commas OROR
587 { $1 = truthvalue_conversion (default_conversion ($1));
588 skip_evaluation += $1 == boolean_true_node; }
590 { skip_evaluation -= $1 == boolean_true_node;
591 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
593 { $1 = truthvalue_conversion (default_conversion ($1));
594 skip_evaluation += $1 == boolean_false_node; }
596 { skip_evaluation += (($1 == boolean_true_node)
597 - ($1 == boolean_false_node)); }
599 { skip_evaluation -= $1 == boolean_true_node;
600 $$ = build_conditional_expr ($1, $4, $7); }
603 pedwarn ("ANSI C forbids omitting the middle term of a ?: expression");
604 /* Make sure first operand is calculated only once. */
605 $<ttype>2 = save_expr ($1);
606 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
607 skip_evaluation += $1 == boolean_true_node; }
609 { skip_evaluation -= $1 == boolean_true_node;
610 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
611 | expr_no_commas '=' expr_no_commas
613 $$ = build_modify_expr ($1, NOP_EXPR, $3);
614 class = TREE_CODE_CLASS (TREE_CODE ($$));
615 if (class == 'e' || class == '1'
616 || class == '2' || class == '<')
617 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
619 | expr_no_commas ASSIGN expr_no_commas
621 $$ = build_modify_expr ($1, $2, $3);
622 /* This inhibits warnings in truthvalue_conversion. */
623 class = TREE_CODE_CLASS (TREE_CODE ($$));
624 if (class == 'e' || class == '1'
625 || class == '2' || class == '<')
626 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
633 if (yychar == YYEMPTY)
635 $$ = build_external_ref ($1, yychar == '(');
639 { $$ = combine_strings ($1); }
641 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
642 if (class == 'e' || class == '1'
643 || class == '2' || class == '<')
644 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
647 { $$ = error_mark_node; }
648 | compstmt_primary_start compstmt_nostart ')'
651 pedwarn ("ANSI C forbids braced-groups within expressions");
652 pop_iterator_stack ();
654 rtl_exp = expand_end_stmt_expr ($1);
655 /* The statements have side effects, so the group does. */
656 TREE_SIDE_EFFECTS (rtl_exp) = 1;
658 if (TREE_CODE ($2) == BLOCK)
660 /* Make a BIND_EXPR for the BLOCK already made. */
661 $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
662 NULL_TREE, rtl_exp, $2);
663 /* Remove the block from the tree at this point.
664 It gets put back at the proper place
665 when the BIND_EXPR is expanded. */
671 | compstmt_primary_start error ')'
673 /* Make sure we call expand_end_stmt_expr. Otherwise
674 we are likely to lose sequences and crash later. */
675 pop_iterator_stack ();
677 expand_end_stmt_expr ($1);
678 $$ = error_mark_node;
680 | primary '(' exprlist ')' %prec '.'
681 { $$ = build_function_call ($1, $3); }
682 | primary '[' expr ']' %prec '.'
683 { $$ = build_array_ref ($1, $3); }
684 | primary '.' identifier
687 if (doing_objc_thang)
689 if (is_public ($1, $3))
690 $$ = build_component_ref ($1, $3);
692 $$ = error_mark_node;
696 $$ = build_component_ref ($1, $3);
698 | primary POINTSAT identifier
700 tree expr = build_indirect_ref ($1, "->");
703 if (doing_objc_thang)
705 if (is_public (expr, $3))
706 $$ = build_component_ref (expr, $3);
708 $$ = error_mark_node;
712 $$ = build_component_ref (expr, $3);
715 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
717 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
720 { $$ = build_message_expr ($1); }
722 { $$ = build_selector_expr ($1); }
724 { $$ = build_protocol_expr ($1); }
726 { $$ = build_encode_expr ($1); }
728 { $$ = build_objc_string_object ($1); }
732 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
736 { $$ = chainon ($1, $2);
738 if (warn_traditional && !in_system_header)
739 warning ("Use of ANSI string concatenation");
745 /* Produces an OBJC_STRING_CST with perhaps more OBJC_STRING_CSTs chained
749 | objc_string OBJC_STRING
750 { $$ = chainon ($1, $2); }
754 old_style_parm_decls:
758 /* ... is used here to indicate a varargs function. */
761 pedwarn ("ANSI C does not permit use of `varargs.h'"); }
764 /* The following are analogous to lineno_decl, decls and decl
765 except that they do not allow nested functions.
766 They are used for old-style parm decls. */
768 save_filename save_lineno datadecl
775 | datadecls lineno_datadecl
776 | lineno_datadecl errstmt
779 /* We don't allow prefix attributes here because they cause reduce/reduce
780 conflicts: we can't know whether we're parsing a function decl with
781 attribute suffix, or function defn with attribute prefix on first old
784 typed_declspecs_no_prefix_attr setspecs initdecls ';'
785 { current_declspecs = TREE_VALUE (declspec_stack);
786 prefix_attributes = TREE_PURPOSE (declspec_stack);
787 declspec_stack = TREE_CHAIN (declspec_stack); }
788 | declmods_no_prefix_attr setspecs notype_initdecls ';'
789 { current_declspecs = TREE_VALUE (declspec_stack);
790 prefix_attributes = TREE_PURPOSE (declspec_stack);
791 declspec_stack = TREE_CHAIN (declspec_stack); }
792 | typed_declspecs_no_prefix_attr ';'
793 { shadow_tag_warned ($1, 1);
794 pedwarn ("empty declaration"); }
795 | declmods_no_prefix_attr ';'
796 { pedwarn ("empty declaration"); }
799 /* This combination which saves a lineno before a decl
800 is the normal thing to use, rather than decl itself.
801 This is to avoid shift/reduce conflicts in contexts
802 where statement labels are allowed. */
804 save_filename save_lineno decl
812 | lineno_decl errstmt
815 /* records the type and storage class specs to use for processing
816 the declarators that follow.
817 Maintains a stack of outer-level values of current_declspecs,
818 for the sake of parm declarations nested in function declarators. */
819 setspecs: /* empty */
820 { pending_xref_error ();
821 declspec_stack = tree_cons (prefix_attributes,
824 split_specs_attrs ($<ttype>0,
825 ¤t_declspecs, &prefix_attributes); }
828 /* ??? Yuck. See after_type_declarator. */
829 setattrs: /* empty */
830 { prefix_attributes = chainon (prefix_attributes, $<ttype>0); }
834 typed_declspecs setspecs initdecls ';'
835 { current_declspecs = TREE_VALUE (declspec_stack);
836 prefix_attributes = TREE_PURPOSE (declspec_stack);
837 declspec_stack = TREE_CHAIN (declspec_stack); }
838 | declmods setspecs notype_initdecls ';'
839 { current_declspecs = TREE_VALUE (declspec_stack);
840 prefix_attributes = TREE_PURPOSE (declspec_stack);
841 declspec_stack = TREE_CHAIN (declspec_stack); }
842 | typed_declspecs setspecs nested_function
843 { current_declspecs = TREE_VALUE (declspec_stack);
844 prefix_attributes = TREE_PURPOSE (declspec_stack);
845 declspec_stack = TREE_CHAIN (declspec_stack); }
846 | declmods setspecs notype_nested_function
847 { current_declspecs = TREE_VALUE (declspec_stack);
848 prefix_attributes = TREE_PURPOSE (declspec_stack);
849 declspec_stack = TREE_CHAIN (declspec_stack); }
850 | typed_declspecs ';'
853 { pedwarn ("empty declaration"); }
855 { RESTORE_WARN_FLAGS ($1); }
858 /* Declspecs which contain at least one type specifier or typedef name.
859 (Just `const' or `volatile' is not enough.)
860 A typedef'd name following these is taken as a name to be declared.
861 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
864 typespec reserved_declspecs
865 { $$ = tree_cons (NULL_TREE, $1, $2); }
866 | declmods typespec reserved_declspecs
867 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
870 reserved_declspecs: /* empty */
872 | reserved_declspecs typespecqual_reserved
873 { $$ = tree_cons (NULL_TREE, $2, $1); }
874 | reserved_declspecs SCSPEC
875 { if (extra_warnings)
876 warning ("`%s' is not at beginning of declaration",
877 IDENTIFIER_POINTER ($2));
878 $$ = tree_cons (NULL_TREE, $2, $1); }
879 | reserved_declspecs attributes
880 { $$ = tree_cons ($2, NULL_TREE, $1); }
883 typed_declspecs_no_prefix_attr:
884 typespec reserved_declspecs_no_prefix_attr
885 { $$ = tree_cons (NULL_TREE, $1, $2); }
886 | declmods_no_prefix_attr typespec reserved_declspecs_no_prefix_attr
887 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
890 reserved_declspecs_no_prefix_attr:
893 | reserved_declspecs_no_prefix_attr typespecqual_reserved
894 { $$ = tree_cons (NULL_TREE, $2, $1); }
895 | reserved_declspecs_no_prefix_attr SCSPEC
896 { if (extra_warnings)
897 warning ("`%s' is not at beginning of declaration",
898 IDENTIFIER_POINTER ($2));
899 $$ = tree_cons (NULL_TREE, $2, $1); }
902 /* List of just storage classes, type modifiers, and prefix attributes.
903 A declaration can start with just this, but then it cannot be used
904 to redeclare a typedef-name.
905 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
908 declmods_no_prefix_attr
911 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
912 | declmods declmods_no_prefix_attr
913 { $$ = chainon ($2, $1); }
914 | declmods attributes
915 { $$ = tree_cons ($2, NULL_TREE, $1); }
918 declmods_no_prefix_attr:
920 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
921 TREE_STATIC ($$) = 1; }
923 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
924 | declmods_no_prefix_attr TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
927 | declmods_no_prefix_attr SCSPEC
928 { if (extra_warnings && TREE_STATIC ($1))
929 warning ("`%s' is not at beginning of declaration",
930 IDENTIFIER_POINTER ($2));
931 $$ = tree_cons (NULL_TREE, $2, $1);
932 TREE_STATIC ($$) = TREE_STATIC ($1); }
936 /* Used instead of declspecs where storage classes are not allowed
937 (that is, for typenames and structure components).
938 Don't accept a typedef-name if anything but a modifier precedes it. */
941 typespec reserved_typespecquals
942 { $$ = tree_cons (NULL_TREE, $1, $2); }
943 | nonempty_type_quals typespec reserved_typespecquals
944 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
947 reserved_typespecquals: /* empty */
949 | reserved_typespecquals typespecqual_reserved
950 { $$ = tree_cons (NULL_TREE, $2, $1); }
953 /* A typespec (but not a type qualifier).
954 Once we have seen one of these in a declaration,
955 if a typedef name appears then it is being redeclared. */
960 { /* For a typedef name, record the meaning, not the name.
961 In case of `foo foo, bar;'. */
962 $$ = lookup_name ($1); }
964 | CLASSNAME protocolrefs
965 { $$ = get_static_reference ($1, $2); }
966 | OBJECTNAME protocolrefs
967 { $$ = get_object_reference ($2); }
969 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
970 - nisse@lysator.liu.se */
971 | non_empty_protocolrefs
972 { $$ = get_object_reference ($1); }
974 | TYPEOF '(' expr ')'
975 { $$ = TREE_TYPE ($3); }
976 | TYPEOF '(' typename ')'
977 { $$ = groktypename ($3); }
980 /* A typespec that is a reserved word, or a type qualifier. */
982 typespecqual_reserved: TYPESPEC
989 | initdecls ',' initdcl
994 | notype_initdecls ',' initdcl
1000 | ASM_KEYWORD '(' string ')'
1001 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1007 declarator maybeasm maybe_attribute '='
1008 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1009 $3, prefix_attributes);
1010 start_init ($<ttype>$, $2, global_bindings_p ()); }
1012 /* Note how the declaration of the variable is in effect while its init is parsed! */
1014 finish_decl ($<ttype>5, $6, $2); }
1015 | declarator maybeasm maybe_attribute
1016 { tree d = start_decl ($1, current_declspecs, 0,
1017 $3, prefix_attributes);
1018 finish_decl (d, NULL_TREE, $2);
1023 notype_declarator maybeasm maybe_attribute '='
1024 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1025 $3, prefix_attributes);
1026 start_init ($<ttype>$, $2, global_bindings_p ()); }
1028 /* Note how the declaration of the variable is in effect while its init is parsed! */
1030 decl_attributes ($<ttype>5, $3, prefix_attributes);
1031 finish_decl ($<ttype>5, $6, $2); }
1032 | notype_declarator maybeasm maybe_attribute
1033 { tree d = start_decl ($1, current_declspecs, 0,
1034 $3, prefix_attributes);
1035 finish_decl (d, NULL_TREE, $2); }
1037 /* the * rules are dummies to accept the Apollo extended syntax
1038 so that the header files compile. */
1049 | attributes attribute
1050 { $$ = chainon ($1, $2); }
1054 ATTRIBUTE '(' '(' attribute_list ')' ')'
1061 | attribute_list ',' attrib
1062 { $$ = chainon ($1, $3); }
1069 { $$ = build_tree_list ($1, NULL_TREE); }
1070 | any_word '(' IDENTIFIER ')'
1071 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1072 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1073 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1074 | any_word '(' exprlist ')'
1075 { $$ = build_tree_list ($1, $3); }
1078 /* This still leaves out most reserved keywords,
1079 shouldn't we include them? */
1088 /* Initializers. `init' is the entry point. */
1093 { really_start_incremental_init (NULL_TREE); }
1094 initlist_maybe_comma '}'
1095 { $$ = pop_init_level (0); }
1097 { $$ = error_mark_node; }
1100 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1101 initlist_maybe_comma:
1104 pedwarn ("ANSI C forbids empty initializer braces"); }
1105 | initlist1 maybecomma
1110 | initlist1 ',' initelt
1113 /* `initelt' is a single element of an initializer.
1114 It may use braces. */
1116 designator_list '=' initval
1117 | designator initval
1119 { set_init_label ($1); }
1126 { push_init_level (0); }
1127 initlist_maybe_comma '}'
1128 { process_init_element (pop_init_level (0)); }
1130 { process_init_element ($1); }
1136 | designator_list designator
1141 { set_init_label ($2); }
1142 /* These are for labeled elements. The syntax for an array element
1143 initializer conflicts with the syntax for an Objective-C message,
1144 so don't include these productions in the Objective-C grammar. */
1146 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1147 { set_init_index ($2, $4); }
1148 | '[' expr_no_commas ']'
1149 { set_init_index ($2, NULL_TREE); }
1156 pedwarn ("ANSI C forbids nested functions");
1158 push_function_context ();
1159 if (! start_function (current_declspecs, $1,
1160 prefix_attributes, NULL_TREE))
1162 pop_function_context ();
1165 reinit_parse_for_function (); }
1166 old_style_parm_decls
1167 { store_parm_decls (); }
1168 /* This used to use compstmt_or_error.
1169 That caused a bug with input `f(g) int g {}',
1170 where the use of YYERROR1 above caused an error
1171 which then was handled by compstmt_or_error.
1172 There followed a repeated execution of that same rule,
1173 which called YYERROR1 again, and so on. */
1175 { finish_function (1);
1176 pop_function_context (); }
1179 notype_nested_function:
1182 pedwarn ("ANSI C forbids nested functions");
1184 push_function_context ();
1185 if (! start_function (current_declspecs, $1,
1186 prefix_attributes, NULL_TREE))
1188 pop_function_context ();
1191 reinit_parse_for_function (); }
1192 old_style_parm_decls
1193 { store_parm_decls (); }
1194 /* This used to use compstmt_or_error.
1195 That caused a bug with input `f(g) int g {}',
1196 where the use of YYERROR1 above caused an error
1197 which then was handled by compstmt_or_error.
1198 There followed a repeated execution of that same rule,
1199 which called YYERROR1 again, and so on. */
1201 { finish_function (1);
1202 pop_function_context (); }
1205 /* Any kind of declarator (thus, all declarators allowed
1206 after an explicit typespec). */
1209 after_type_declarator
1213 /* A declarator that is allowed only after an explicit typespec. */
1215 after_type_declarator:
1216 '(' after_type_declarator ')'
1218 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1219 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1220 /* | after_type_declarator '(' error ')' %prec '.'
1221 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1222 poplevel (0, 0, 0); } */
1223 | after_type_declarator '[' expr ']' %prec '.'
1224 { $$ = build_nt (ARRAY_REF, $1, $3); }
1225 | after_type_declarator '[' ']' %prec '.'
1226 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1227 | '*' type_quals after_type_declarator %prec UNARY
1228 { $$ = make_pointer_declarator ($2, $3); }
1229 /* ??? Yuck. setattrs is a quick hack. We can't use
1230 prefix_attributes because $1 only applies to this
1231 declarator. We assume setspecs has already been done.
1232 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1233 attributes could be recognized here or in `attributes'). */
1234 | attributes setattrs after_type_declarator
1242 /* Kinds of declarator that can appear in a parameter list
1243 in addition to notype_declarator. This is like after_type_declarator
1244 but does not allow a typedef name in parentheses as an identifier
1245 (because it would conflict with a function with that typedef as arg). */
1248 parm_declarator '(' parmlist_or_identifiers %prec '.'
1249 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1250 /* | parm_declarator '(' error ')' %prec '.'
1251 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1252 poplevel (0, 0, 0); } */
1254 | parm_declarator '[' '*' ']' %prec '.'
1255 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
1257 error ("`[*]' in parameter declaration only allowed in ISO C 99");
1260 | parm_declarator '[' expr ']' %prec '.'
1261 { $$ = build_nt (ARRAY_REF, $1, $3); }
1262 | parm_declarator '[' ']' %prec '.'
1263 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1264 | '*' type_quals parm_declarator %prec UNARY
1265 { $$ = make_pointer_declarator ($2, $3); }
1266 /* ??? Yuck. setattrs is a quick hack. We can't use
1267 prefix_attributes because $1 only applies to this
1268 declarator. We assume setspecs has already been done.
1269 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1270 attributes could be recognized here or in `attributes'). */
1271 | attributes setattrs parm_declarator
1276 /* A declarator allowed whether or not there has been
1277 an explicit typespec. These cannot redeclare a typedef-name. */
1280 notype_declarator '(' parmlist_or_identifiers %prec '.'
1281 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1282 /* | notype_declarator '(' error ')' %prec '.'
1283 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1284 poplevel (0, 0, 0); } */
1285 | '(' notype_declarator ')'
1287 | '*' type_quals notype_declarator %prec UNARY
1288 { $$ = make_pointer_declarator ($2, $3); }
1290 | notype_declarator '[' '*' ']' %prec '.'
1291 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
1293 error ("`[*]' in parameter declaration only allowed in ISO C 99");
1296 | notype_declarator '[' expr ']' %prec '.'
1297 { $$ = build_nt (ARRAY_REF, $1, $3); }
1298 | notype_declarator '[' ']' %prec '.'
1299 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1300 /* ??? Yuck. setattrs is a quick hack. We can't use
1301 prefix_attributes because $1 only applies to this
1302 declarator. We assume setspecs has already been done.
1303 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1304 attributes could be recognized here or in `attributes'). */
1305 | attributes setattrs notype_declarator
1332 struct_head identifier '{'
1333 { $$ = start_struct (RECORD_TYPE, $2);
1334 /* Start scope of tag before parsing components. */
1336 component_decl_list '}' maybe_attribute
1337 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1338 | struct_head '{' component_decl_list '}' maybe_attribute
1339 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1340 $3, chainon ($1, $5));
1342 | struct_head identifier
1343 { $$ = xref_tag (RECORD_TYPE, $2); }
1344 | union_head identifier '{'
1345 { $$ = start_struct (UNION_TYPE, $2); }
1346 component_decl_list '}' maybe_attribute
1347 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1348 | union_head '{' component_decl_list '}' maybe_attribute
1349 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1350 $3, chainon ($1, $5));
1352 | union_head identifier
1353 { $$ = xref_tag (UNION_TYPE, $2); }
1354 | enum_head identifier '{'
1355 { $$ = start_enum ($2); }
1356 enumlist maybecomma_warn '}' maybe_attribute
1357 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1358 chainon ($1, $8)); }
1360 { $$ = start_enum (NULL_TREE); }
1361 enumlist maybecomma_warn '}' maybe_attribute
1362 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1363 chainon ($1, $7)); }
1364 | enum_head identifier
1365 { $$ = xref_tag (ENUMERAL_TYPE, $2); }
1376 { if (pedantic && ! flag_isoc99)
1377 pedwarn ("comma at end of enumerator list"); }
1380 component_decl_list:
1381 component_decl_list2
1383 | component_decl_list2 component_decl
1384 { $$ = chainon ($1, $2);
1385 pedwarn ("no semicolon at end of struct or union"); }
1388 component_decl_list2: /* empty */
1390 | component_decl_list2 component_decl ';'
1391 { $$ = chainon ($1, $2); }
1392 | component_decl_list2 ';'
1394 pedwarn ("extra semicolon in struct or union specified"); }
1396 /* foo(sizeof(struct{ @defs(ClassName)})); */
1397 | DEFS '(' CLASSNAME ')'
1399 tree interface = lookup_interface ($3);
1402 $$ = get_class_ivars (interface);
1405 error ("Cannot find interface declaration for `%s'",
1406 IDENTIFIER_POINTER ($3));
1413 /* There is a shift-reduce conflict here, because `components' may
1414 start with a `typename'. It happens that shifting (the default resolution)
1415 does the right thing, because it treats the `typename' as part of
1416 a `typed_typespecs'.
1418 It is possible that this same technique would allow the distinction
1419 between `notype_initdecls' and `initdecls' to be eliminated.
1420 But I am being cautious and not trying it. */
1423 typed_typespecs setspecs components
1425 current_declspecs = TREE_VALUE (declspec_stack);
1426 prefix_attributes = TREE_PURPOSE (declspec_stack);
1427 declspec_stack = TREE_CHAIN (declspec_stack); }
1428 | typed_typespecs setspecs save_filename save_lineno maybe_attribute
1430 /* Support for unnamed structs or unions as members of
1431 structs or unions (which is [a] useful and [b] supports
1434 pedwarn ("ANSI C doesn't support unnamed structs/unions");
1436 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1437 current_declspecs = TREE_VALUE (declspec_stack);
1438 prefix_attributes = TREE_PURPOSE (declspec_stack);
1439 declspec_stack = TREE_CHAIN (declspec_stack);
1441 | nonempty_type_quals setspecs components
1443 current_declspecs = TREE_VALUE (declspec_stack);
1444 prefix_attributes = TREE_PURPOSE (declspec_stack);
1445 declspec_stack = TREE_CHAIN (declspec_stack); }
1446 | nonempty_type_quals
1448 pedwarn ("ANSI C forbids member declarations with no members");
1453 | extension component_decl
1455 RESTORE_WARN_FLAGS ($1); }
1459 component_declarator
1460 | components ',' component_declarator
1461 { $$ = chainon ($1, $3); }
1464 component_declarator:
1465 save_filename save_lineno declarator maybe_attribute
1466 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1467 decl_attributes ($$, $4, prefix_attributes); }
1468 | save_filename save_lineno
1469 declarator ':' expr_no_commas maybe_attribute
1470 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1471 decl_attributes ($$, $6, prefix_attributes); }
1472 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1473 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1474 decl_attributes ($$, $5, prefix_attributes); }
1477 /* We chain the enumerators in reverse order.
1478 They are put in forward order where enumlist is used.
1479 (The order used to be significant, but no longer is so.
1480 However, we still maintain the order, just to be clean.) */
1484 | enumlist ',' enumerator
1485 { if ($1 == error_mark_node)
1488 $$ = chainon ($3, $1); }
1490 { $$ = error_mark_node; }
1496 { $$ = build_enumerator ($1, NULL_TREE); }
1497 | identifier '=' expr_no_commas
1498 { $$ = build_enumerator ($1, $3); }
1502 typed_typespecs absdcl
1503 { $$ = build_tree_list ($1, $2); }
1504 | nonempty_type_quals absdcl
1505 { $$ = build_tree_list ($1, $2); }
1508 absdcl: /* an absolute declarator */
1514 nonempty_type_quals:
1516 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
1517 | nonempty_type_quals TYPE_QUAL
1518 { $$ = tree_cons (NULL_TREE, $2, $1); }
1524 | type_quals TYPE_QUAL
1525 { $$ = tree_cons (NULL_TREE, $2, $1); }
1528 absdcl1: /* a nonempty absolute declarator */
1531 /* `(typedef)1' is `int'. */
1532 | '*' type_quals absdcl1 %prec UNARY
1533 { $$ = make_pointer_declarator ($2, $3); }
1534 | '*' type_quals %prec UNARY
1535 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1536 | absdcl1 '(' parmlist %prec '.'
1537 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1538 | absdcl1 '[' expr ']' %prec '.'
1539 { $$ = build_nt (ARRAY_REF, $1, $3); }
1540 | absdcl1 '[' ']' %prec '.'
1541 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1542 | '(' parmlist %prec '.'
1543 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1544 | '[' expr ']' %prec '.'
1545 { $$ = build_nt (ARRAY_REF, NULL_TREE, $2); }
1547 { $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); }
1548 /* ??? It appears we have to support attributes here, however
1549 using prefix_attributes is wrong. */
1550 | attributes setattrs absdcl1
1554 /* at least one statement, the first of which parses without error. */
1555 /* stmts is used only after decls, so an invalid first statement
1556 is actually regarded as an invalid decl and part of the decls. */
1559 lineno_stmt_or_labels
1562 pedwarn ("ANSI C forbids label at end of compound statement");
1566 lineno_stmt_or_labels:
1567 lineno_stmt_or_label
1568 | lineno_stmt_or_labels lineno_stmt_or_label
1570 | lineno_stmt_or_labels errstmt
1582 pushlevel: /* empty */
1583 { emit_line_note (input_filename, lineno);
1586 expand_start_bindings (0);
1588 if (objc_method_context)
1594 /* Read zero or more forward-declarations for labels
1595 that nested functions can jump to. */
1600 pedwarn ("ANSI C forbids label declarations"); }
1605 | label_decls label_decl
1609 LABEL identifiers_or_typenames ';'
1611 for (link = $2; link; link = TREE_CHAIN (link))
1613 tree label = shadow_label (TREE_VALUE (link));
1614 C_DECLARED_LABEL_FLAG (label) = 1;
1615 declare_nonlocal_label (label);
1620 /* This is the body of a function definition.
1621 It causes syntax errors to ignore to the next openbrace. */
1628 compstmt_start: '{' { compstmt_count++; }
1630 compstmt_nostart: '}'
1631 { $$ = convert (void_type_node, integer_zero_node); }
1632 | pushlevel maybe_label_decls decls xstmts '}'
1633 { emit_line_note (input_filename, lineno);
1634 expand_end_bindings (getdecls (), 1, 0);
1635 $$ = poplevel (1, 1, 0); }
1636 | pushlevel maybe_label_decls error '}'
1637 { emit_line_note (input_filename, lineno);
1638 expand_end_bindings (getdecls (), kept_level_p (), 0);
1639 $$ = poplevel (kept_level_p (), 0, 0); }
1640 | pushlevel maybe_label_decls stmts '}'
1641 { emit_line_note (input_filename, lineno);
1642 expand_end_bindings (getdecls (), kept_level_p (), 0);
1643 $$ = poplevel (kept_level_p (), 0, 0); }
1646 compstmt_primary_start:
1648 { if (current_function_decl == 0)
1650 error ("braced-group within expression allowed only inside a function");
1653 /* We must force a BLOCK for this level
1654 so that, if it is not expanded later,
1655 there is a way to turn off the entire subtree of blocks
1656 that are contained in it. */
1658 push_iterator_stack ();
1659 push_label_level ();
1660 $$ = expand_start_stmt_expr ();
1664 compstmt: compstmt_start compstmt_nostart
1668 /* Value is number of statements counted as of the closeparen. */
1670 if_prefix lineno_labeled_stmt
1671 /* Make sure c_expand_end_cond is run once
1672 for each call to c_expand_start_cond.
1673 Otherwise a crash is likely. */
1679 { emit_line_note ($<filename>-1, $<lineno>0);
1680 c_expand_start_cond (truthvalue_conversion ($3), 0,
1682 $<itype>$ = stmt_count;
1683 if_stmt_file = $<filename>-1;
1684 if_stmt_line = $<lineno>0;
1685 position_after_white_space (); }
1688 /* This is a subroutine of stmt.
1689 It is used twice, once for valid DO statements
1690 and once for catching errors in parsing the end test. */
1695 emit_line_note ($<filename>-1, $<lineno>0);
1696 /* See comment in `while' alternative, above. */
1698 expand_start_loop_continue_elsewhere (1);
1699 position_after_white_space (); }
1700 lineno_labeled_stmt WHILE
1701 { expand_loop_continue_here (); }
1705 { $$ = input_filename; }
1712 lineno_labeled_stmt:
1713 save_filename save_lineno stmt
1715 /* | save_filename save_lineno error
1718 | save_filename save_lineno label lineno_labeled_stmt
1722 lineno_stmt_or_label:
1723 save_filename save_lineno stmt_or_label
1734 /* Parse a single real statement, not including any labels. */
1741 emit_line_note ($<filename>-1, $<lineno>0);
1742 /* It appears that this should not be done--that a non-lvalue array
1743 shouldn't get an error if the value isn't used.
1744 Section 3.2.2.1 says that an array lvalue gets converted to a pointer
1745 if it appears as a top-level expression,
1746 but says nothing about non-lvalue arrays. */
1748 /* Call default_conversion to get an error
1749 on referring to a register array if pedantic. */
1750 if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
1751 || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
1752 $1 = default_conversion ($1);
1754 iterator_expand ($1); }
1756 { c_expand_start_else ();
1757 $<itype>1 = stmt_count;
1758 position_after_white_space (); }
1760 { c_expand_end_cond ();
1761 if (extra_warnings && stmt_count == $<itype>1)
1762 warning ("empty body in an else-statement"); }
1763 | simple_if %prec IF
1764 { c_expand_end_cond ();
1765 /* This warning is here instead of in simple_if, because we
1766 do not want a warning if an empty if is followed by an
1767 else statement. Increment stmt_count so we don't
1768 give a second error if this is a nested `if'. */
1769 if (extra_warnings && stmt_count++ == $<itype>1)
1770 warning_with_file_and_line (if_stmt_file, if_stmt_line,
1771 "empty body in an if-statement"); }
1772 /* Make sure c_expand_end_cond is run once
1773 for each call to c_expand_start_cond.
1774 Otherwise a crash is likely. */
1775 | simple_if ELSE error
1776 { c_expand_end_cond (); }
1779 emit_line_note ($<filename>-1, $<lineno>0);
1780 /* The emit_nop used to come before emit_line_note,
1781 but that made the nop seem like part of the preceding line.
1782 And that was confusing when the preceding line was
1783 inside of an if statement and was not really executed.
1784 I think it ought to work to put the nop after the line number.
1785 We will see. --rms, July 15, 1991. */
1788 { /* Don't start the loop till we have succeeded
1789 in parsing the end test. This is to make sure
1790 that we end every loop we start. */
1791 expand_start_loop (1);
1792 emit_line_note (input_filename, lineno);
1793 expand_exit_loop_if_false (NULL_PTR,
1794 truthvalue_conversion ($4));
1795 position_after_white_space (); }
1797 { expand_end_loop (); }
1800 { emit_line_note (input_filename, lineno);
1801 expand_exit_loop_if_false (NULL_PTR,
1802 truthvalue_conversion ($3));
1803 expand_end_loop (); }
1804 /* This rule is needed to make sure we end every loop we start. */
1805 | do_stmt_start error
1806 { expand_end_loop (); }
1810 emit_line_note ($<filename>-1, $<lineno>0);
1811 /* See comment in `while' alternative, above. */
1813 if ($3) c_expand_expr_stmt ($3);
1814 /* Next step is to call expand_start_loop_continue_elsewhere,
1815 but wait till after we parse the entire for (...).
1816 Otherwise, invalid input might cause us to call that
1817 fn without calling expand_end_loop. */
1820 /* Can't emit now; wait till after expand_start_loop... */
1821 { $<lineno>7 = lineno;
1822 $<filename>$ = input_filename; }
1825 /* Start the loop. Doing this after parsing
1826 all the expressions ensures we will end the loop. */
1827 expand_start_loop_continue_elsewhere (1);
1828 /* Emit the end-test, with a line number. */
1829 emit_line_note ($<filename>8, $<lineno>7);
1831 expand_exit_loop_if_false (NULL_PTR,
1832 truthvalue_conversion ($6));
1833 $<lineno>7 = lineno;
1834 $<filename>8 = input_filename;
1835 position_after_white_space (); }
1837 { /* Emit the increment expression, with a line number. */
1838 emit_line_note ($<filename>8, $<lineno>7);
1839 expand_loop_continue_here ();
1841 c_expand_expr_stmt ($9);
1842 expand_end_loop (); }
1843 | SWITCH '(' expr ')'
1845 emit_line_note ($<filename>-1, $<lineno>0);
1846 c_expand_start_case ($3);
1847 position_after_white_space (); }
1849 { expand_end_case ($3); }
1851 { build_break_stmt ();
1853 genrtl_break_stmt (); }
1855 { build_continue_stmt ();
1857 genrtl_continue_stmt (); }
1859 { tree return_stmt = build_return_stmt (NULL_TREE);
1861 genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
1863 { tree return_stmt = build_return_stmt ($2);
1865 genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
1866 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
1868 emit_line_note ($<filename>-1, $<lineno>0);
1870 if ((TREE_CODE ($4) == ADDR_EXPR
1871 && TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST)
1872 || TREE_CODE ($4) == STRING_CST)
1875 error ("argument of `asm' is not a constant string"); }
1876 /* This is the case with just output operands. */
1877 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
1879 emit_line_note ($<filename>-1, $<lineno>0);
1880 c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
1881 $2 == ridpointers[(int)RID_VOLATILE],
1882 input_filename, lineno); }
1883 /* This is the case with input operands as well. */
1884 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';'
1886 emit_line_note ($<filename>-1, $<lineno>0);
1887 c_expand_asm_operands ($4, $6, $8, NULL_TREE,
1888 $2 == ridpointers[(int)RID_VOLATILE],
1889 input_filename, lineno); }
1890 /* This is the case with clobbered registers as well. */
1891 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
1892 asm_operands ':' asm_clobbers ')' ';'
1894 emit_line_note ($<filename>-1, $<lineno>0);
1895 c_expand_asm_operands ($4, $6, $8, $10,
1896 $2 == ridpointers[(int)RID_VOLATILE],
1897 input_filename, lineno); }
1898 | GOTO identifier ';'
1901 emit_line_note ($<filename>-1, $<lineno>0);
1902 decl = lookup_label ($2);
1905 TREE_USED (decl) = 1;
1911 pedwarn ("ANSI C forbids `goto *expr;'");
1913 emit_line_note ($<filename>-1, $<lineno>0);
1914 expand_computed_goto (convert (ptr_type_node, $3)); }
1919 all_iter_stmt_simple
1920 /* | all_iter_stmt_with_decl */
1923 all_iter_stmt_simple:
1926 /* The value returned by this action is */
1927 /* 1 if everything is OK */
1928 /* 0 in case of error or already bound iterator */
1931 if (TREE_CODE ($3) != VAR_DECL)
1932 error ("invalid `for (ITERATOR)' syntax");
1933 else if (! ITERATOR_P ($3))
1934 error ("`%s' is not an iterator",
1935 IDENTIFIER_POINTER (DECL_NAME ($3)));
1936 else if (ITERATOR_BOUND_P ($3))
1937 error ("`for (%s)' inside expansion of same iterator",
1938 IDENTIFIER_POINTER (DECL_NAME ($3)));
1942 iterator_for_loop_start ($3);
1948 iterator_for_loop_end ($3);
1951 /* This really should allow any kind of declaration,
1952 for generality. Fix it before turning it back on.
1954 all_iter_stmt_with_decl:
1955 FOR '(' ITERATOR pushlevel setspecs iterator_spec ')'
1957 */ /* The value returned by this action is */
1958 /* 1 if everything is OK */
1959 /* 0 in case of error or already bound iterator */
1961 iterator_for_loop_start ($6);
1965 iterator_for_loop_end ($6);
1966 emit_line_note (input_filename, lineno);
1967 expand_end_bindings (getdecls (), 1, 0);
1968 $<ttype>$ = poplevel (1, 1, 0);
1972 /* Any kind of label, including jump labels and case labels.
1973 ANSI C accepts labels only before statements, but we allow them
1974 also at the end of a compound statement. */
1976 label: CASE expr_no_commas ':'
1977 { tree case_label_tree = build_case_label ($2, NULL_TREE);
1979 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1980 position_after_white_space ();
1982 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
1983 { tree case_label_tree = build_case_label ($2, $4);
1985 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1986 position_after_white_space ();
1989 { tree case_label_tree = build_case_label (NULL_TREE, NULL_TREE);
1991 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1992 position_after_white_space ();
1994 | identifier ':' maybe_attribute
1995 { tree label = define_label (input_filename, lineno, $1);
2000 expand_label (label);
2001 decl_attributes (label, $3, NULL_TREE);
2003 position_after_white_space (); }
2006 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2010 { emit_line_note (input_filename, lineno);
2013 { emit_line_note (input_filename, lineno); }
2022 /* These are the operands other than the first string and colon
2023 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2024 asm_operands: /* empty */
2026 | nonnull_asm_operands
2029 nonnull_asm_operands:
2031 | nonnull_asm_operands ',' asm_operand
2032 { $$ = chainon ($1, $3); }
2037 { $$ = build_tree_list ($1, $3); }
2042 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2043 | asm_clobbers ',' string
2044 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2047 /* This is what appears inside the parens in a function declarator.
2048 Its value is a list of ..._TYPE nodes. */
2051 clear_parm_order ();
2052 declare_parm_level (0); }
2055 parmlist_tags_warning ();
2056 poplevel (0, 0, 0); }
2064 pedwarn ("ANSI C forbids forward parameter declarations");
2065 /* Mark the forward decls as such. */
2066 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2067 TREE_ASM_WRITTEN (parm) = 1;
2068 clear_parm_order (); }
2072 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2075 /* This is what appears inside the parens in a function declarator.
2076 Is value is represented in the format that grokdeclarator expects. */
2077 parmlist_2: /* empty */
2078 { $$ = get_parm_info (0); }
2080 { $$ = get_parm_info (0);
2081 /* Gcc used to allow this as an extension. However, it does
2082 not work for all targets, and thus has been disabled.
2083 Also, since func (...) and func () are indistinguishable,
2084 it caused problems with the code in expand_builtin which
2085 tries to verify that BUILT_IN_NEXT_ARG is being used
2087 error ("ANSI C requires a named argument before `...'");
2090 { $$ = get_parm_info (1); }
2091 | parms ',' ELLIPSIS
2092 { $$ = get_parm_info (0); }
2097 { push_parm_decl ($1); }
2099 { push_parm_decl ($3); }
2102 /* A single parameter declaration or parameter type name,
2103 as found in a parmlist. */
2105 typed_declspecs setspecs parm_declarator maybe_attribute
2106 { $$ = build_tree_list (build_tree_list (current_declspecs,
2108 build_tree_list (prefix_attributes,
2110 current_declspecs = TREE_VALUE (declspec_stack);
2111 prefix_attributes = TREE_PURPOSE (declspec_stack);
2112 declspec_stack = TREE_CHAIN (declspec_stack); }
2113 | typed_declspecs setspecs notype_declarator maybe_attribute
2114 { $$ = build_tree_list (build_tree_list (current_declspecs,
2116 build_tree_list (prefix_attributes,
2118 current_declspecs = TREE_VALUE (declspec_stack);
2119 prefix_attributes = TREE_PURPOSE (declspec_stack);
2120 declspec_stack = TREE_CHAIN (declspec_stack); }
2121 | typed_declspecs setspecs absdcl maybe_attribute
2122 { $$ = build_tree_list (build_tree_list (current_declspecs,
2124 build_tree_list (prefix_attributes,
2126 current_declspecs = TREE_VALUE (declspec_stack);
2127 prefix_attributes = TREE_PURPOSE (declspec_stack);
2128 declspec_stack = TREE_CHAIN (declspec_stack); }
2129 | declmods setspecs notype_declarator maybe_attribute
2130 { $$ = build_tree_list (build_tree_list (current_declspecs,
2132 build_tree_list (prefix_attributes,
2134 current_declspecs = TREE_VALUE (declspec_stack);
2135 prefix_attributes = TREE_PURPOSE (declspec_stack);
2136 declspec_stack = TREE_CHAIN (declspec_stack); }
2138 | declmods setspecs absdcl maybe_attribute
2139 { $$ = build_tree_list (build_tree_list (current_declspecs,
2141 build_tree_list (prefix_attributes,
2143 current_declspecs = TREE_VALUE (declspec_stack);
2144 prefix_attributes = TREE_PURPOSE (declspec_stack);
2145 declspec_stack = TREE_CHAIN (declspec_stack); }
2148 /* This is used in a function definition
2149 where either a parmlist or an identifier list is ok.
2150 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2151 parmlist_or_identifiers:
2153 clear_parm_order ();
2154 declare_parm_level (1); }
2155 parmlist_or_identifiers_1
2157 parmlist_tags_warning ();
2158 poplevel (0, 0, 0); }
2161 parmlist_or_identifiers_1:
2165 for (t = $1; t; t = TREE_CHAIN (t))
2166 if (TREE_VALUE (t) == NULL_TREE)
2167 error ("`...' in old-style identifier list");
2168 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2171 /* A nonempty list of identifiers. */
2174 { $$ = build_tree_list (NULL_TREE, $1); }
2175 | identifiers ',' IDENTIFIER
2176 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2179 /* A nonempty list of identifiers, including typenames. */
2180 identifiers_or_typenames:
2182 { $$ = build_tree_list (NULL_TREE, $1); }
2183 | identifiers_or_typenames ',' identifier
2184 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2189 { $$ = SAVE_WARN_FLAGS();
2191 warn_pointer_arith = 0; }
2195 /* Objective-C productions. */
2205 if (objc_implementation_context)
2207 finish_class (objc_implementation_context);
2208 objc_ivar_chain = NULL_TREE;
2209 objc_implementation_context = NULL_TREE;
2212 warning ("`@end' must appear in an implementation context");
2216 /* A nonempty list of identifiers. */
2219 { $$ = build_tree_list (NULL_TREE, $1); }
2220 | identifier_list ',' identifier
2221 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2225 CLASS identifier_list ';'
2227 objc_declare_class ($2);
2231 ALIAS identifier identifier ';'
2233 objc_declare_alias ($2, $3);
2237 INTERFACE identifier protocolrefs '{'
2239 objc_interface_context = objc_ivar_context
2240 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2241 objc_public_flag = 0;
2245 continue_class (objc_interface_context);
2250 finish_class (objc_interface_context);
2251 objc_interface_context = NULL_TREE;
2254 | INTERFACE identifier protocolrefs
2256 objc_interface_context
2257 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2258 continue_class (objc_interface_context);
2263 finish_class (objc_interface_context);
2264 objc_interface_context = NULL_TREE;
2267 | INTERFACE identifier ':' identifier protocolrefs '{'
2269 objc_interface_context = objc_ivar_context
2270 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2271 objc_public_flag = 0;
2275 continue_class (objc_interface_context);
2280 finish_class (objc_interface_context);
2281 objc_interface_context = NULL_TREE;
2284 | INTERFACE identifier ':' identifier protocolrefs
2286 objc_interface_context
2287 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2288 continue_class (objc_interface_context);
2293 finish_class (objc_interface_context);
2294 objc_interface_context = NULL_TREE;
2297 | IMPLEMENTATION identifier '{'
2299 objc_implementation_context = objc_ivar_context
2300 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2301 objc_public_flag = 0;
2306 = continue_class (objc_implementation_context);
2309 | IMPLEMENTATION identifier
2311 objc_implementation_context
2312 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2314 = continue_class (objc_implementation_context);
2317 | IMPLEMENTATION identifier ':' identifier '{'
2319 objc_implementation_context = objc_ivar_context
2320 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2321 objc_public_flag = 0;
2326 = continue_class (objc_implementation_context);
2329 | IMPLEMENTATION identifier ':' identifier
2331 objc_implementation_context
2332 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2334 = continue_class (objc_implementation_context);
2337 | INTERFACE identifier '(' identifier ')' protocolrefs
2339 objc_interface_context
2340 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2341 continue_class (objc_interface_context);
2346 finish_class (objc_interface_context);
2347 objc_interface_context = NULL_TREE;
2350 | IMPLEMENTATION identifier '(' identifier ')'
2352 objc_implementation_context
2353 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2355 = continue_class (objc_implementation_context);
2360 PROTOCOL identifier protocolrefs
2362 remember_protocol_qualifiers ();
2363 objc_interface_context
2364 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2368 forget_protocol_qualifiers();
2369 finish_protocol(objc_interface_context);
2370 objc_interface_context = NULL_TREE;
2379 | non_empty_protocolrefs
2382 non_empty_protocolrefs:
2383 ARITHCOMPARE identifier_list ARITHCOMPARE
2385 if ($1 == LT_EXPR && $3 == GT_EXPR)
2393 ivar_decl_list visibility_spec ivar_decls
2398 PRIVATE { objc_public_flag = 2; }
2399 | PROTECTED { objc_public_flag = 0; }
2400 | PUBLIC { objc_public_flag = 1; }
2408 | ivar_decls ivar_decl ';'
2412 pedwarn ("extra semicolon in struct or union specified");
2417 /* There is a shift-reduce conflict here, because `components' may
2418 start with a `typename'. It happens that shifting (the default resolution)
2419 does the right thing, because it treats the `typename' as part of
2420 a `typed_typespecs'.
2422 It is possible that this same technique would allow the distinction
2423 between `notype_initdecls' and `initdecls' to be eliminated.
2424 But I am being cautious and not trying it. */
2427 typed_typespecs setspecs ivars
2429 current_declspecs = TREE_VALUE (declspec_stack);
2430 prefix_attributes = TREE_PURPOSE (declspec_stack);
2431 declspec_stack = TREE_CHAIN (declspec_stack); }
2432 | nonempty_type_quals setspecs ivars
2434 current_declspecs = TREE_VALUE (declspec_stack);
2435 prefix_attributes = TREE_PURPOSE (declspec_stack);
2436 declspec_stack = TREE_CHAIN (declspec_stack); }
2445 | ivars ',' ivar_declarator
2451 $$ = add_instance_variable (objc_ivar_context,
2453 $1, current_declspecs,
2456 | declarator ':' expr_no_commas
2458 $$ = add_instance_variable (objc_ivar_context,
2460 $1, current_declspecs, $3);
2462 | ':' expr_no_commas
2464 $$ = add_instance_variable (objc_ivar_context,
2467 current_declspecs, $2);
2474 remember_protocol_qualifiers ();
2475 if (objc_implementation_context)
2476 objc_inherit_code = CLASS_METHOD_DECL;
2478 fatal ("method definition not in class context");
2482 forget_protocol_qualifiers ();
2483 add_class_method (objc_implementation_context, $3);
2484 start_method_def ($3);
2485 objc_method_context = $3;
2489 continue_method_def ();
2493 finish_method_def ();
2494 objc_method_context = NULL_TREE;
2499 remember_protocol_qualifiers ();
2500 if (objc_implementation_context)
2501 objc_inherit_code = INSTANCE_METHOD_DECL;
2503 fatal ("method definition not in class context");
2507 forget_protocol_qualifiers ();
2508 add_instance_method (objc_implementation_context, $3);
2509 start_method_def ($3);
2510 objc_method_context = $3;
2514 continue_method_def ();
2518 finish_method_def ();
2519 objc_method_context = NULL_TREE;
2523 /* the reason for the strange actions in this rule
2524 is so that notype_initdecls when reached via datadef
2525 can find a valid list of type and sc specs in $0. */
2529 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2532 methodprotolist2: /* eliminates a shift/reduce conflict */
2535 | methodprotolist2 methodproto
2536 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2547 /* Remember protocol qualifiers in prototypes. */
2548 remember_protocol_qualifiers ();
2549 objc_inherit_code = CLASS_METHOD_DECL;
2553 /* Forget protocol qualifiers here. */
2554 forget_protocol_qualifiers ();
2555 add_class_method (objc_interface_context, $3);
2561 /* Remember protocol qualifiers in prototypes. */
2562 remember_protocol_qualifiers ();
2563 objc_inherit_code = INSTANCE_METHOD_DECL;
2567 /* Forget protocol qualifiers here. */
2568 forget_protocol_qualifiers ();
2569 add_instance_method (objc_interface_context, $3);
2575 '(' typename ')' unaryselector
2577 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2582 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2585 | '(' typename ')' keywordselector optparmlist
2587 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2590 | keywordselector optparmlist
2592 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2596 /* "optarglist" assumes that start_method_def has already been called...
2597 if it is not, the "xdecls" will not be placed in the proper scope */
2604 /* to get around the following situation: "int foo (int a) int b; {}" that
2605 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
2620 typed_declspecs setspecs myparms ';'
2621 { current_declspecs = TREE_VALUE (declspec_stack);
2622 prefix_attributes = TREE_PURPOSE (declspec_stack);
2623 declspec_stack = TREE_CHAIN (declspec_stack); }
2624 | typed_declspecs ';'
2625 { shadow_tag ($1); }
2627 { pedwarn ("empty declaration"); }
2632 { push_parm_decl ($1); }
2633 | myparms ',' myparm
2634 { push_parm_decl ($3); }
2637 /* A single parameter declaration or parameter type name,
2638 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
2641 parm_declarator maybe_attribute
2642 { $$ = build_tree_list (build_tree_list (current_declspecs,
2644 build_tree_list (prefix_attributes,
2646 | notype_declarator maybe_attribute
2647 { $$ = build_tree_list (build_tree_list (current_declspecs,
2649 build_tree_list (prefix_attributes,
2651 | absdcl maybe_attribute
2652 { $$ = build_tree_list (build_tree_list (current_declspecs,
2654 build_tree_list (prefix_attributes,
2665 /* oh what a kludge! */
2666 $$ = objc_ellipsis_node;
2674 /* returns a tree list node generated by get_parm_info */
2687 | keywordselector keyworddecl
2689 $$ = chainon ($1, $2);
2701 ENUM { $$ = get_identifier (token_buffer); }
2702 | STRUCT { $$ = get_identifier (token_buffer); }
2703 | UNION { $$ = get_identifier (token_buffer); }
2704 | IF { $$ = get_identifier (token_buffer); }
2705 | ELSE { $$ = get_identifier (token_buffer); }
2706 | WHILE { $$ = get_identifier (token_buffer); }
2707 | DO { $$ = get_identifier (token_buffer); }
2708 | FOR { $$ = get_identifier (token_buffer); }
2709 | SWITCH { $$ = get_identifier (token_buffer); }
2710 | CASE { $$ = get_identifier (token_buffer); }
2711 | DEFAULT { $$ = get_identifier (token_buffer); }
2712 | BREAK { $$ = get_identifier (token_buffer); }
2713 | CONTINUE { $$ = get_identifier (token_buffer); }
2714 | RETURN { $$ = get_identifier (token_buffer); }
2715 | GOTO { $$ = get_identifier (token_buffer); }
2716 | ASM_KEYWORD { $$ = get_identifier (token_buffer); }
2717 | SIZEOF { $$ = get_identifier (token_buffer); }
2718 | TYPEOF { $$ = get_identifier (token_buffer); }
2719 | ALIGNOF { $$ = get_identifier (token_buffer); }
2720 | TYPESPEC | TYPE_QUAL
2724 selector ':' '(' typename ')' identifier
2726 $$ = build_keyword_decl ($1, $4, $6);
2729 | selector ':' identifier
2731 $$ = build_keyword_decl ($1, NULL_TREE, $3);
2734 | ':' '(' typename ')' identifier
2736 $$ = build_keyword_decl (NULL_TREE, $3, $5);
2741 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
2752 | keywordarglist keywordarg
2754 $$ = chainon ($1, $2);
2762 if (TREE_CHAIN ($1) == NULL_TREE)
2763 /* just return the expr., remove a level of indirection */
2764 $$ = TREE_VALUE ($1);
2766 /* we have a comma expr., we will collapse later */
2772 selector ':' keywordexpr
2774 $$ = build_tree_list ($1, $3);
2778 $$ = build_tree_list (NULL_TREE, $2);
2786 $$ = get_class_reference ($1);
2792 { objc_receiver_context = 1; }
2794 { objc_receiver_context = 0; }
2797 $$ = build_tree_list ($3, $5);
2808 | keywordnamelist keywordname
2810 $$ = chainon ($1, $2);
2817 $$ = build_tree_list ($1, NULL_TREE);
2821 $$ = build_tree_list (NULL_TREE, NULL_TREE);
2826 SELECTOR '(' selectorarg ')'
2833 PROTOCOL '(' identifier ')'
2839 /* extension to support C-structures in the archiver */
2842 ENCODE '(' typename ')'
2844 $$ = groktypename ($3);