1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* This file defines the grammar of C and that of Objective C.
21 ifobjc ... end ifobjc conditionals contain code for Objective C only.
22 ifc ... end ifc conditionals contain code for C only.
23 Sed commands in Makefile.in are used to convert this file into
24 c-parse.y and into objc-parse.y. */
26 /* To whomever it may concern: I have heard that such a thing was once
27 written by AT&T, but I have never seen it. */
35 /* These are the 23 conflicts you should get in parse.output;
36 the state numbers may vary if minor changes in the grammar are made.
38 State 42 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
39 State 44 contains 1 shift/reduce conflict. (Two ways to recover from error.)
40 State 103 contains 1 shift/reduce conflict. (Two ways to recover from error.)
41 State 110 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
42 State 111 contains 1 shift/reduce conflict. (Two ways to recover from error.)
43 State 115 contains 1 shift/reduce conflict. (Two ways to recover from error.)
44 State 132 contains 1 shift/reduce conflict. (See comment at component_decl.)
45 State 180 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
46 State 194 contains 2 shift/reduce conflict. (Four ways to parse this.)
47 State 202 contains 1 shift/reduce conflict. (Two ways to recover from error.)
48 State 214 contains 1 shift/reduce conflict. (Two ways to recover from error.)
49 State 220 contains 1 shift/reduce conflict. (Two ways to recover from error.)
50 State 304 contains 2 shift/reduce conflicts. (Four ways to parse this.)
51 State 335 contains 2 shift/reduce conflicts. (Four ways to parse this.)
52 State 347 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
53 State 352 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
54 State 383 contains 2 shift/reduce conflicts. (Four ways to parse this.)
55 State 434 contains 2 shift/reduce conflicts. (Four ways to parse this.) */
71 #ifdef MULTIBYTE_CHARS
80 /* Since parsers are distinct for each language, put the language string
83 char *language_string = "GNU Obj-C";
86 char *language_string = "GNU C";
95 /* Like YYERROR but do call yyerror. */
96 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
98 /* Cause the `yydebug' variable to be defined. */
104 %union {long itype; tree ttype; enum tree_code code;
105 char *filename; int lineno; }
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. */
120 /* Reserved words that specify type.
121 yylval contains an IDENTIFIER_NODE which indicates which one. */
124 /* Reserved words that qualify type: "const" or "volatile".
125 yylval contains an IDENTIFIER_NODE which indicates which one. */
128 /* Character or numeric constants.
129 yylval is the node for the constant. */
132 /* String constants in raw form.
133 yylval is a STRING_CST node. */
136 /* "...", used for functions with variable arglists. */
139 /* the reserved words */
140 /* SCO include files test "ASM", so use something else. */
141 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
142 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
143 %token ATTRIBUTE EXTENSION LABEL
144 %token REALPART IMAGPART
146 /* Add precedence rules to solve dangling else s/r conflict */
150 /* Define the operator tokens and their precedences.
151 The value is an integer because, if used, it is the tree code
152 to use in the expression made from the operator. */
154 %right <code> ASSIGN '='
155 %right <code> '?' ':'
161 %left <code> EQCOMPARE
162 %left <code> ARITHCOMPARE
163 %left <code> LSHIFT RSHIFT
165 %left <code> '*' '/' '%'
166 %right <code> UNARY PLUSPLUS MINUSMINUS
168 %left <code> POINTSAT '.' '(' '['
170 /* The Objective-C keywords. These are included in C and in
171 Objective C, so that the token codes are the same in both. */
172 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
173 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
175 /* Objective-C string constants in raw form.
176 yylval is an OBJC_STRING_CST node. */
182 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
183 %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
184 %type <ttype> typed_declspecs reserved_declspecs
185 %type <ttype> typed_typespecs reserved_typespecquals
186 %type <ttype> declmods typespec typespecqual_reserved
187 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual
188 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
189 %type <ttype> init maybeasm
190 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
191 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
192 %type <ttype> any_word
194 %type <ttype> compstmt
196 %type <ttype> declarator
197 %type <ttype> notype_declarator after_type_declarator
198 %type <ttype> parm_declarator
200 %type <ttype> structsp component_decl_list component_decl_list2
201 %type <ttype> component_decl components component_declarator
202 %type <ttype> enumlist enumerator
203 %type <ttype> typename absdcl absdcl1 type_quals
204 %type <ttype> xexpr parms parm identifiers
206 %type <ttype> parmlist parmlist_1 parmlist_2
207 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
208 %type <ttype> identifiers_or_typenames
210 %type <itype> setspecs
212 %type <filename> save_filename
213 %type <lineno> save_lineno
216 /* the Objective-C nonterminals */
218 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
219 %type <ttype> methoddecl unaryselector keywordselector selector
220 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
221 %type <ttype> keywordexpr keywordarglist keywordarg
222 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
223 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
224 %type <ttype> objc_string protocolrefs identifier_list objcprotocolexpr
225 %type <ttype> CLASSNAME OBJC_STRING OBJECTNAME
229 /* Number of statements (loosely speaking) seen so far. */
230 static int stmt_count;
232 /* Input file and line number of the end of the body of last simple_if;
233 used by the stmt-rule immediately after simple_if returns. */
234 static char *if_stmt_file;
235 static int if_stmt_line;
237 /* List of types and structure classes of the current declaration. */
238 static tree current_declspecs;
239 static tree prefix_attributes = NULL_TREE;
241 /* Stack of saved values of current_declspecs and prefix_attributes. */
242 static tree declspec_stack;
244 /* 1 if we explained undeclared var errors. */
245 static int undeclared_variable_notice;
248 /* Objective-C specific information */
250 tree objc_interface_context;
251 tree objc_implementation_context;
252 tree objc_method_context;
253 tree objc_ivar_chain;
254 tree objc_ivar_context;
255 enum tree_code objc_inherit_code;
256 int objc_receiver_context;
257 int objc_public_flag;
261 /* Tell yyparse how to print a token's value, if yydebug is set. */
263 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
264 extern void yyprint ();
270 pedwarn ("ANSI C forbids an empty source file");
275 /* In case there were missing closebraces,
276 get us back to the global binding level. */
277 while (! global_bindings_p ())
283 /* the reason for the strange actions in this rule
284 is so that notype_initdecls when reached via datadef
285 can find a valid list of type and sc specs in $0. */
288 {$<ttype>$ = NULL_TREE; } extdef
289 | extdefs {$<ttype>$ = NULL_TREE; } extdef
298 | ASM_KEYWORD '(' expr ')' ';'
300 if ((TREE_CODE ($3) == ADDR_EXPR
301 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
302 || TREE_CODE ($3) == STRING_CST)
305 error ("argument of `asm' is not a constant string"); }
309 setspecs notype_initdecls ';'
311 error ("ANSI C forbids data definition with no type or storage class");
312 else if (!flag_traditional)
313 warning ("data definition has no type or storage class"); }
314 | declmods setspecs notype_initdecls ';'
316 | typed_declspecs setspecs initdecls ';'
319 { pedwarn ("empty declaration"); }
320 | typed_declspecs ';'
326 pedwarn ("ANSI C does not allow extra `;' outside of a function"); }
330 typed_declspecs setspecs declarator
331 { if (! start_function ($1, $3, prefix_attributes, 0))
333 reinit_parse_for_function (); }
335 { store_parm_decls (); }
337 { finish_function (0); }
338 | typed_declspecs setspecs declarator error
340 | declmods setspecs notype_declarator
341 { if (! start_function ($1, $3, prefix_attributes, 0))
343 reinit_parse_for_function (); }
345 { store_parm_decls (); }
347 { finish_function (0); }
348 | declmods setspecs notype_declarator error
350 | setspecs notype_declarator
351 { if (! start_function (NULL_TREE, $2, prefix_attributes, 0))
353 reinit_parse_for_function (); }
355 { store_parm_decls (); }
357 { finish_function (0); }
358 | setspecs notype_declarator error
374 { $$ = NEGATE_EXPR; }
376 { $$ = CONVERT_EXPR; }
378 { $$ = PREINCREMENT_EXPR; }
380 { $$ = PREDECREMENT_EXPR; }
382 { $$ = BIT_NOT_EXPR; }
384 { $$ = TRUTH_NOT_EXPR; }
387 expr: nonnull_exprlist
388 { $$ = build_compound_expr ($1); }
399 { $$ = build_tree_list (NULL_TREE, $1); }
400 | nonnull_exprlist ',' expr_no_commas
401 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
406 | '*' cast_expr %prec UNARY
407 { $$ = build_indirect_ref ($2, "unary *"); }
408 /* __extension__ turns off -pedantic for following primary. */
410 { $<itype>1 = pedantic;
412 cast_expr %prec UNARY
414 pedantic = $<itype>1; }
415 | unop cast_expr %prec UNARY
416 { $$ = build_unary_op ($1, $2, 0);
417 overflow_warning ($$); }
418 /* Refer to the address of a label as a pointer. */
420 { tree label = lookup_label ($2);
422 pedwarn ("ANSI C forbids `&&'");
424 $$ = null_pointer_node;
427 TREE_USED (label) = 1;
428 $$ = build1 (ADDR_EXPR, ptr_type_node, label);
429 TREE_CONSTANT ($$) = 1;
432 /* This seems to be impossible on some machines, so let's turn it off.
433 You can use __builtin_next_arg to find the anonymous stack args.
435 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
436 $$ = error_mark_node;
437 if (TREE_VALUE (tree_last (types)) == void_type_node)
438 error ("`&...' used in function with fixed number of arguments");
442 pedwarn ("ANSI C forbids `&...'");
443 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
444 $$ = build_unary_op (ADDR_EXPR, $$, 0);
447 | SIZEOF unary_expr %prec UNARY
448 { if (TREE_CODE ($2) == COMPONENT_REF
449 && DECL_BIT_FIELD (TREE_OPERAND ($2, 1)))
450 error ("`sizeof' applied to a bit-field");
451 $$ = c_sizeof (TREE_TYPE ($2)); }
452 | SIZEOF '(' typename ')' %prec HYPERUNARY
453 { $$ = c_sizeof (groktypename ($3)); }
454 | ALIGNOF unary_expr %prec UNARY
455 { $$ = c_alignof_expr ($2); }
456 | ALIGNOF '(' typename ')' %prec HYPERUNARY
457 { $$ = c_alignof (groktypename ($3)); }
458 | REALPART cast_expr %prec UNARY
459 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
460 | IMAGPART cast_expr %prec UNARY
461 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
466 | '(' typename ')' cast_expr %prec UNARY
467 { tree type = groktypename ($2);
468 $$ = build_c_cast (type, $4); }
469 | '(' typename ')' '{'
470 { start_init (NULL_TREE, NULL, 0);
471 $2 = groktypename ($2);
472 really_start_incremental_init ($2); }
473 initlist_maybe_comma '}' %prec UNARY
475 tree result = pop_init_level (0);
480 pedwarn ("ANSI C forbids constructor expressions");
481 if (TYPE_NAME (type) != 0)
483 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
484 name = IDENTIFIER_POINTER (TYPE_NAME (type));
486 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
491 if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0)
493 int failure = complete_array_type (type, $$, 1);
502 | expr_no_commas '+' expr_no_commas
503 { $$ = parser_build_binary_op ($2, $1, $3); }
504 | expr_no_commas '-' expr_no_commas
505 { $$ = parser_build_binary_op ($2, $1, $3); }
506 | expr_no_commas '*' expr_no_commas
507 { $$ = parser_build_binary_op ($2, $1, $3); }
508 | expr_no_commas '/' expr_no_commas
509 { $$ = parser_build_binary_op ($2, $1, $3); }
510 | expr_no_commas '%' expr_no_commas
511 { $$ = parser_build_binary_op ($2, $1, $3); }
512 | expr_no_commas LSHIFT expr_no_commas
513 { $$ = parser_build_binary_op ($2, $1, $3); }
514 | expr_no_commas RSHIFT expr_no_commas
515 { $$ = parser_build_binary_op ($2, $1, $3); }
516 | expr_no_commas ARITHCOMPARE expr_no_commas
517 { $$ = parser_build_binary_op ($2, $1, $3); }
518 | expr_no_commas EQCOMPARE expr_no_commas
519 { $$ = parser_build_binary_op ($2, $1, $3); }
520 | expr_no_commas '&' expr_no_commas
521 { $$ = parser_build_binary_op ($2, $1, $3); }
522 | expr_no_commas '|' expr_no_commas
523 { $$ = parser_build_binary_op ($2, $1, $3); }
524 | expr_no_commas '^' expr_no_commas
525 { $$ = parser_build_binary_op ($2, $1, $3); }
526 | expr_no_commas ANDAND expr_no_commas
527 { $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $3); }
528 | expr_no_commas OROR expr_no_commas
529 { $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $3); }
530 | expr_no_commas '?' xexpr ':' expr_no_commas
531 { $$ = build_conditional_expr ($1, $3, $5); }
532 | expr_no_commas '=' expr_no_commas
533 { $$ = build_modify_expr ($1, NOP_EXPR, $3);
534 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR); }
535 | expr_no_commas ASSIGN expr_no_commas
536 { $$ = build_modify_expr ($1, $2, $3);
537 /* This inhibits warnings in truthvalue_conversion. */
538 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK); }
545 if (!$$ || $$ == error_mark_node)
547 if (yychar == YYEMPTY)
554 if (objc_receiver_context
555 && ! (objc_receiver_context
556 && strcmp (IDENTIFIER_POINTER ($1), "super")))
557 /* we have a message to super */
558 $$ = get_super_receiver ();
559 else if (objc_method_context
560 && (decl = is_ivar (objc_ivar_chain, $1)))
562 if (is_private (decl))
563 $$ = error_mark_node;
565 $$ = build_ivar_reference ($1);
570 /* Ordinary implicit function declaration. */
571 $$ = implicitly_declare ($1);
572 assemble_external ($$);
576 else if (current_function_decl == 0)
578 error ("`%s' undeclared here (not in a function)",
579 IDENTIFIER_POINTER ($1));
580 $$ = error_mark_node;
587 if (objc_receiver_context
588 && ! strcmp (IDENTIFIER_POINTER ($1), "super"))
589 /* we have a message to super */
590 $$ = get_super_receiver ();
591 else if (objc_method_context
592 && (decl = is_ivar (objc_ivar_chain, $1)))
594 if (is_private (decl))
595 $$ = error_mark_node;
597 $$ = build_ivar_reference ($1);
602 if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node
603 || IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl)
605 error ("`%s' undeclared (first use this function)",
606 IDENTIFIER_POINTER ($1));
608 if (! undeclared_variable_notice)
610 error ("(Each undeclared identifier is reported only once");
611 error ("for each function it appears in.)");
612 undeclared_variable_notice = 1;
615 $$ = error_mark_node;
616 /* Prevent repeated error messages. */
617 IDENTIFIER_GLOBAL_VALUE ($1) = error_mark_node;
618 IDENTIFIER_ERROR_LOCUS ($1) = current_function_decl;
622 else if (TREE_TYPE ($$) == error_mark_node)
623 $$ = error_mark_node;
624 else if (C_DECL_ANTICIPATED ($$))
626 /* The first time we see a build-in function used,
627 if it has not been declared. */
628 C_DECL_ANTICIPATED ($$) = 0;
629 if (yychar == YYEMPTY)
633 /* Omit the implicit declaration we
634 would ordinarily do, so we don't lose
635 the actual built in type.
636 But print a diagnostic for the mismatch. */
638 if (objc_method_context
639 && is_ivar (objc_ivar_chain, $1))
640 error ("Instance variable `%s' implicitly declared as function",
641 IDENTIFIER_POINTER (DECL_NAME ($$)));
644 if (TREE_CODE ($$) != FUNCTION_DECL)
645 error ("`%s' implicitly declared as function",
646 IDENTIFIER_POINTER (DECL_NAME ($$)));
647 else if ((TYPE_MODE (TREE_TYPE (TREE_TYPE ($$)))
648 != TYPE_MODE (integer_type_node))
649 && (TREE_TYPE (TREE_TYPE ($$))
651 pedwarn ("type mismatch in implicit declaration for built-in function `%s'",
652 IDENTIFIER_POINTER (DECL_NAME ($$)));
653 /* If it really returns void, change that to int. */
654 if (TREE_TYPE (TREE_TYPE ($$)) == void_type_node)
656 = build_function_type (integer_type_node,
657 TYPE_ARG_TYPES (TREE_TYPE ($$)));
660 pedwarn ("built-in function `%s' used without declaration",
661 IDENTIFIER_POINTER (DECL_NAME ($$)));
663 /* Do what we would ordinarily do when a fn is used. */
664 assemble_external ($$);
669 assemble_external ($$);
672 /* we have a definition - still check if iVariable */
674 if (!objc_receiver_context
675 || (objc_receiver_context
676 && strcmp (IDENTIFIER_POINTER ($1), "super")))
680 if (objc_method_context
681 && (decl = is_ivar (objc_ivar_chain, $1)))
683 if (IDENTIFIER_LOCAL_VALUE ($1))
684 warning ("local declaration of `%s' hides instance variable",
685 IDENTIFIER_POINTER ($1));
688 if (is_private (decl))
689 $$ = error_mark_node;
691 $$ = build_ivar_reference ($1);
695 else /* we have a message to super */
696 $$ = get_super_receiver ();
700 if (TREE_CODE ($$) == CONST_DECL)
702 $$ = DECL_INITIAL ($$);
703 /* This is to prevent an enum whose value is 0
704 from being considered a null pointer constant. */
705 $$ = build1 (NOP_EXPR, TREE_TYPE ($$), $$);
706 TREE_CONSTANT ($$) = 1;
711 { $$ = combine_strings ($1); }
713 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
714 if (class == 'e' || class == '1'
715 || class == '2' || class == '<')
716 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
719 { $$ = error_mark_node; }
721 { if (current_function_decl == 0)
723 error ("braced-group within expression allowed only inside a function");
726 /* We must force a BLOCK for this level
727 so that, if it is not expanded later,
728 there is a way to turn off the entire subtree of blocks
729 that are contained in it. */
731 push_iterator_stack ();
733 $<ttype>$ = expand_start_stmt_expr (); }
737 pedwarn ("ANSI C forbids braced-groups within expressions");
738 pop_iterator_stack ();
740 rtl_exp = expand_end_stmt_expr ($<ttype>2);
741 /* The statements have side effects, so the group does. */
742 TREE_SIDE_EFFECTS (rtl_exp) = 1;
744 if (TREE_CODE ($3) == BLOCK)
746 /* Make a BIND_EXPR for the BLOCK already made. */
747 $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
748 NULL_TREE, rtl_exp, $3);
749 /* Remove the block from the tree at this point.
750 It gets put back at the proper place
751 when the BIND_EXPR is expanded. */
757 | primary '(' exprlist ')' %prec '.'
758 { $$ = build_function_call ($1, $3); }
759 | primary '[' expr ']' %prec '.'
760 { $$ = build_array_ref ($1, $3); }
761 | primary '.' identifier
764 if (doing_objc_thang)
766 if (is_public ($1, $3))
767 $$ = build_component_ref ($1, $3);
769 $$ = error_mark_node;
773 $$ = build_component_ref ($1, $3);
775 | primary POINTSAT identifier
777 tree expr = build_indirect_ref ($1, "->");
780 if (doing_objc_thang)
782 if (is_public (expr, $3))
783 $$ = build_component_ref (expr, $3);
785 $$ = error_mark_node;
789 $$ = build_component_ref (expr, $3);
792 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
794 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
797 { $$ = build_message_expr ($1); }
799 { $$ = build_selector_expr ($1); }
801 { $$ = build_protocol_expr ($1); }
803 { $$ = build_encode_expr ($1); }
805 { $$ = build_objc_string_object ($1); }
809 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
813 { $$ = chainon ($1, $2); }
817 /* Produces an OBJC_STRING_CST with prehaps more OBJC_STRING_CSTs chained
821 | objc_string OBJC_STRING
822 { $$ = chainon ($1, $2); }
830 /* ... is used here to indicate a varargs function. */
833 pedwarn ("ANSI C does not permit use of `varargs.h'"); }
836 /* The following are analogous to lineno_decl, decls and decl
837 except that they do not allow nested functions.
838 They are used for old-style parm decls. */
840 save_filename save_lineno datadecl
847 | datadecls lineno_datadecl
848 | lineno_datadecl errstmt
852 typed_declspecs setspecs initdecls ';'
853 { current_declspecs = TREE_VALUE (declspec_stack);
854 prefix_attributes = TREE_PURPOSE (declspec_stack);
855 declspec_stack = TREE_CHAIN (declspec_stack);
856 resume_momentary ($2); }
857 | declmods setspecs notype_initdecls ';'
858 { current_declspecs = TREE_VALUE (declspec_stack);
859 prefix_attributes = TREE_PURPOSE (declspec_stack);
860 declspec_stack = TREE_CHAIN (declspec_stack);
861 resume_momentary ($2); }
862 | typed_declspecs ';'
863 { shadow_tag_warned ($1, 1);
864 pedwarn ("empty declaration"); }
866 { pedwarn ("empty declaration"); }
869 /* This combination which saves a lineno before a decl
870 is the normal thing to use, rather than decl itself.
871 This is to avoid shift/reduce conflicts in contexts
872 where statement labels are allowed. */
874 save_filename save_lineno decl
882 | lineno_decl errstmt
885 /* records the type and storage class specs to use for processing
886 the declarators that follow.
887 Maintains a stack of outer-level values of current_declspecs,
888 for the sake of parm declarations nested in function declarators. */
889 setspecs: /* empty */
890 { $$ = suspend_momentary ();
891 pending_xref_error ();
892 declspec_stack = tree_cons (prefix_attributes,
895 current_declspecs = $<ttype>0;
896 prefix_attributes = NULL_TREE; }
899 setattrs: /* empty */
900 { prefix_attributes = chainon (prefix_attributes, $<ttype>0); }
904 typed_declspecs setspecs initdecls ';'
905 { current_declspecs = TREE_VALUE (declspec_stack);
906 prefix_attributes = TREE_PURPOSE (declspec_stack);
907 declspec_stack = TREE_CHAIN (declspec_stack);
908 resume_momentary ($2); }
909 | declmods setspecs notype_initdecls ';'
910 { current_declspecs = TREE_VALUE (declspec_stack);
911 prefix_attributes = TREE_PURPOSE (declspec_stack);
912 declspec_stack = TREE_CHAIN (declspec_stack);
913 resume_momentary ($2); }
914 | typed_declspecs setspecs nested_function
915 { current_declspecs = TREE_VALUE (declspec_stack);
916 prefix_attributes = TREE_PURPOSE (declspec_stack);
917 declspec_stack = TREE_CHAIN (declspec_stack);
918 resume_momentary ($2); }
919 | declmods setspecs notype_nested_function
920 { current_declspecs = TREE_VALUE (declspec_stack);
921 prefix_attributes = TREE_PURPOSE (declspec_stack);
922 declspec_stack = TREE_CHAIN (declspec_stack);
923 resume_momentary ($2); }
924 | typed_declspecs ';'
927 { pedwarn ("empty declaration"); }
930 /* Declspecs which contain at least one type specifier or typedef name.
931 (Just `const' or `volatile' is not enough.)
932 A typedef'd name following these is taken as a name to be declared. */
935 typespec reserved_declspecs
936 { $$ = tree_cons (NULL_TREE, $1, $2); }
937 | declmods typespec reserved_declspecs
938 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
941 reserved_declspecs: /* empty */
943 | reserved_declspecs typespecqual_reserved
944 { $$ = tree_cons (NULL_TREE, $2, $1); }
945 | reserved_declspecs SCSPEC
946 { if (extra_warnings)
947 warning ("`%s' is not at beginning of declaration",
948 IDENTIFIER_POINTER ($2));
949 $$ = tree_cons (NULL_TREE, $2, $1); }
952 /* List of just storage classes and type modifiers.
953 A declaration can start with just this, but then it cannot be used
954 to redeclare a typedef-name. */
958 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
959 TREE_STATIC ($$) = 1; }
961 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
963 { $$ = tree_cons (NULL_TREE, $2, $1);
964 TREE_STATIC ($$) = 1; }
966 { if (extra_warnings && TREE_STATIC ($1))
967 warning ("`%s' is not at beginning of declaration",
968 IDENTIFIER_POINTER ($2));
969 $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = TREE_STATIC ($1); }
974 /* Used instead of declspecs where storage classes are not allowed
975 (that is, for typenames and structure components).
976 Don't accept a typedef-name if anything but a modifier precedes it. */
979 typespec reserved_typespecquals
980 { $$ = tree_cons (NULL_TREE, $1, $2); }
981 | nonempty_type_quals typespec reserved_typespecquals
982 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
985 reserved_typespecquals: /* empty */
987 | reserved_typespecquals typespecqual_reserved
988 { $$ = tree_cons (NULL_TREE, $2, $1); }
991 /* A typespec (but not a type qualifier).
992 Once we have seen one of these in a declaration,
993 if a typedef name appears then it is being redeclared. */
998 { /* For a typedef name, record the meaning, not the name.
999 In case of `foo foo, bar;'. */
1000 $$ = lookup_name ($1); }
1002 | CLASSNAME protocolrefs
1003 { $$ = get_static_reference ($1, $2); }
1004 | OBJECTNAME protocolrefs
1005 { $$ = get_object_reference ($2); }
1007 | TYPEOF '(' expr ')'
1008 { $$ = TREE_TYPE ($3); }
1009 | TYPEOF '(' typename ')'
1010 { $$ = groktypename ($3); }
1013 /* A typespec that is a reserved word, or a type qualifier. */
1015 typespecqual_reserved: TYPESPEC
1022 | initdecls ',' initdcl
1027 | notype_initdecls ',' initdcl
1033 | ASM_KEYWORD '(' string ')'
1034 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1040 declarator maybeasm maybe_attribute '='
1041 { $<ttype>$ = start_decl ($1, current_declspecs, 1);
1042 decl_attributes ($<ttype>$, $3, prefix_attributes);
1043 start_init ($<ttype>$, $2, global_bindings_p ()); }
1045 /* Note how the declaration of the variable is in effect while its init is parsed! */
1047 finish_decl ($<ttype>5, $6, $2); }
1048 | declarator maybeasm maybe_attribute
1049 { tree d = start_decl ($1, current_declspecs, 0);
1050 decl_attributes (d, $3, prefix_attributes);
1051 finish_decl (d, NULL_TREE, $2);
1056 notype_declarator maybeasm maybe_attribute '='
1057 { $<ttype>$ = start_decl ($1, current_declspecs, 1);
1058 decl_attributes ($<ttype>$, $3, prefix_attributes);
1059 start_init ($<ttype>$, $2, global_bindings_p ()); }
1061 /* Note how the declaration of the variable is in effect while its init is parsed! */
1063 decl_attributes ($<ttype>5, $3, prefix_attributes);
1064 finish_decl ($<ttype>5, $6, $2); }
1065 | notype_declarator maybeasm maybe_attribute
1066 { tree d = start_decl ($1, current_declspecs, 0);
1067 decl_attributes (d, $3, prefix_attributes);
1068 finish_decl (d, NULL_TREE, $2); }
1070 /* the * rules are dummies to accept the Apollo extended syntax
1071 so that the header files compile. */
1082 | attributes attribute
1083 { $$ = chainon ($1, $2); }
1087 ATTRIBUTE '(' '(' attribute_list ')' ')'
1094 | attribute_list ',' attrib
1095 { $$ = chainon ($1, $3); }
1102 { $$ = build_tree_list ($1, NULL_TREE); }
1103 | any_word '(' IDENTIFIER ')'
1104 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1105 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1106 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1107 | any_word '(' nonnull_exprlist ')'
1108 { $$ = build_tree_list ($1, $3); }
1111 /* This still leaves out most reserved keywords,
1112 shouldn't we include them? */
1121 /* Initializers. `init' is the entry point. */
1126 { really_start_incremental_init (NULL_TREE);
1127 /* Note that the call to clear_momentary
1128 is in process_init_element. */
1129 push_momentary (); }
1130 initlist_maybe_comma '}'
1131 { $$ = pop_init_level (0);
1132 if ($$ == error_mark_node
1133 && ! (yychar == STRING || yychar == CONSTANT))
1136 pop_momentary_nofree (); }
1139 { $$ = error_mark_node; }
1142 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1143 initlist_maybe_comma:
1146 pedwarn ("ANSI C forbids empty initializer braces"); }
1147 | initlist1 maybecomma
1152 | initlist1 ',' initelt
1155 /* `initelt' is a single element of an initializer.
1156 It may use braces. */
1159 { process_init_element ($1); }
1161 { push_init_level (0); }
1162 initlist_maybe_comma '}'
1163 { process_init_element (pop_init_level (0)); }
1165 /* These are for labeled elements. The syntax for an array element
1166 initializer conflicts with the syntax for an Objective-C message,
1167 so don't include these productions in the Objective-C grammer. */
1169 | '[' expr_no_commas ELLIPSIS expr_no_commas ']' '='
1170 { set_init_index ($2, $4); }
1172 | '[' expr_no_commas ']' '='
1173 { set_init_index ($2, NULL_TREE); }
1175 | '[' expr_no_commas ']'
1176 { set_init_index ($2, NULL_TREE); }
1180 { set_init_label ($1); }
1182 | '.' identifier '='
1183 { set_init_label ($2); }
1189 { push_c_function_context ();
1190 if (! start_function (current_declspecs, $1,
1191 prefix_attributes, 1))
1193 pop_c_function_context ();
1196 reinit_parse_for_function ();
1197 store_parm_decls (); }
1198 /* This used to use compstmt_or_error.
1199 That caused a bug with input `f(g) int g {}',
1200 where the use of YYERROR1 above caused an error
1201 which then was handled by compstmt_or_error.
1202 There followed a repeated execution of that same rule,
1203 which called YYERROR1 again, and so on. */
1205 { finish_function (1);
1206 pop_c_function_context (); }
1209 notype_nested_function:
1211 { push_c_function_context ();
1212 if (! start_function (current_declspecs, $1,
1213 prefix_attributes, 1))
1215 pop_c_function_context ();
1218 reinit_parse_for_function ();
1219 store_parm_decls (); }
1220 /* This used to use compstmt_or_error.
1221 That caused a bug with input `f(g) int g {}',
1222 where the use of YYERROR1 above caused an error
1223 which then was handled by compstmt_or_error.
1224 There followed a repeated execution of that same rule,
1225 which called YYERROR1 again, and so on. */
1227 { finish_function (1);
1228 pop_c_function_context (); }
1231 /* Any kind of declarator (thus, all declarators allowed
1232 after an explicit typespec). */
1235 after_type_declarator
1239 /* A declarator that is allowed only after an explicit typespec. */
1241 after_type_declarator:
1242 '(' after_type_declarator ')'
1244 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1245 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1246 /* | after_type_declarator '(' error ')' %prec '.'
1247 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1248 poplevel (0, 0, 0); } */
1249 | after_type_declarator '[' expr ']' %prec '.'
1250 { $$ = build_nt (ARRAY_REF, $1, $3); }
1251 | after_type_declarator '[' ']' %prec '.'
1252 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1253 | '*' type_quals after_type_declarator %prec UNARY
1254 { $$ = make_pointer_declarator ($2, $3); }
1255 | attributes setattrs after_type_declarator
1263 /* Kinds of declarator that can appear in a parameter list
1264 in addition to notype_declarator. This is like after_type_declarator
1265 but does not allow a typedef name in parentheses as an identifier
1266 (because it would conflict with a function with that typedef as arg). */
1269 parm_declarator '(' parmlist_or_identifiers %prec '.'
1270 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1271 /* | parm_declarator '(' error ')' %prec '.'
1272 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1273 poplevel (0, 0, 0); } */
1274 | parm_declarator '[' expr ']' %prec '.'
1275 { $$ = build_nt (ARRAY_REF, $1, $3); }
1276 | parm_declarator '[' ']' %prec '.'
1277 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1278 | '*' type_quals parm_declarator %prec UNARY
1279 { $$ = make_pointer_declarator ($2, $3); }
1280 | attributes setattrs parm_declarator
1285 /* A declarator allowed whether or not there has been
1286 an explicit typespec. These cannot redeclare a typedef-name. */
1289 notype_declarator '(' parmlist_or_identifiers %prec '.'
1290 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1291 /* | notype_declarator '(' error ')' %prec '.'
1292 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1293 poplevel (0, 0, 0); } */
1294 | '(' notype_declarator ')'
1296 | '*' type_quals notype_declarator %prec UNARY
1297 { $$ = make_pointer_declarator ($2, $3); }
1298 | notype_declarator '[' expr ']' %prec '.'
1299 { $$ = build_nt (ARRAY_REF, $1, $3); }
1300 | notype_declarator '[' ']' %prec '.'
1301 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1302 | attributes setattrs notype_declarator
1308 STRUCT identifier '{'
1309 { $$ = start_struct (RECORD_TYPE, $2);
1310 /* Start scope of tag before parsing components. */
1312 component_decl_list '}' maybe_attribute
1313 { $$ = finish_struct ($<ttype>4, $5);
1314 decl_attributes ($$, $7, NULL_TREE);
1315 /* Really define the structure. */
1317 | STRUCT '{' component_decl_list '}' maybe_attribute
1318 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1320 decl_attributes ($$, $5, NULL_TREE);
1323 { $$ = xref_tag (RECORD_TYPE, $2); }
1324 | UNION identifier '{'
1325 { $$ = start_struct (UNION_TYPE, $2); }
1326 component_decl_list '}' maybe_attribute
1327 { $$ = finish_struct ($<ttype>4, $5);
1328 decl_attributes ($$, $5, NULL_TREE);
1330 | UNION '{' component_decl_list '}'
1331 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1334 { $$ = xref_tag (UNION_TYPE, $2); }
1335 | ENUM identifier '{'
1336 { $<itype>3 = suspend_momentary ();
1337 $$ = start_enum ($2); }
1338 enumlist maybecomma_warn '}'
1339 { $$ = finish_enum ($<ttype>4, nreverse ($5));
1340 resume_momentary ($<itype>3); }
1342 { $<itype>2 = suspend_momentary ();
1343 $$ = start_enum (NULL_TREE); }
1344 enumlist maybecomma_warn '}'
1345 { $$ = finish_enum ($<ttype>3, nreverse ($4));
1346 resume_momentary ($<itype>2); }
1348 { $$ = xref_tag (ENUMERAL_TYPE, $2); }
1359 { if (pedantic) pedwarn ("comma at end of enumerator list"); }
1362 component_decl_list:
1363 component_decl_list2
1365 | component_decl_list2 component_decl
1366 { $$ = chainon ($1, $2);
1367 pedwarn ("no semicolon at end of struct or union"); }
1370 component_decl_list2: /* empty */
1372 | component_decl_list2 component_decl ';'
1373 { $$ = chainon ($1, $2); }
1374 | component_decl_list2 ';'
1376 pedwarn ("extra semicolon in struct or union specified"); }
1378 /* foo(sizeof(struct{ @defs(ClassName)})); */
1379 | DEFS '(' CLASSNAME ')'
1381 tree interface = lookup_interface ($3);
1384 $$ = get_class_ivars (interface);
1387 error ("Cannot find interface declaration for `%s'",
1388 IDENTIFIER_POINTER ($3));
1395 /* There is a shift-reduce conflict here, because `components' may
1396 start with a `typename'. It happens that shifting (the default resolution)
1397 does the right thing, because it treats the `typename' as part of
1398 a `typed_typespecs'.
1400 It is possible that this same technique would allow the distinction
1401 between `notype_initdecls' and `initdecls' to be eliminated.
1402 But I am being cautious and not trying it. */
1405 typed_typespecs setspecs components
1407 current_declspecs = TREE_VALUE (declspec_stack);
1408 prefix_attributes = TREE_PURPOSE (declspec_stack);
1409 declspec_stack = TREE_CHAIN (declspec_stack);
1410 resume_momentary ($2); }
1413 pedwarn ("ANSI C forbids member declarations with no members");
1416 | nonempty_type_quals setspecs components
1418 current_declspecs = TREE_VALUE (declspec_stack);
1419 prefix_attributes = TREE_PURPOSE (declspec_stack);
1420 declspec_stack = TREE_CHAIN (declspec_stack);
1421 resume_momentary ($2); }
1422 | nonempty_type_quals
1424 pedwarn ("ANSI C forbids member declarations with no members");
1432 component_declarator
1433 | components ',' component_declarator
1434 { $$ = chainon ($1, $3); }
1437 component_declarator:
1438 save_filename save_lineno declarator maybe_attribute
1439 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1440 decl_attributes ($$, $4, prefix_attributes); }
1441 | save_filename save_lineno
1442 declarator ':' expr_no_commas maybe_attribute
1443 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1444 decl_attributes ($$, $6, prefix_attributes); }
1445 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1446 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1447 decl_attributes ($$, $5, prefix_attributes); }
1450 /* We chain the enumerators in reverse order.
1451 They are put in forward order where enumlist is used.
1452 (The order used to be significant, but no longer is so.
1453 However, we still maintain the order, just to be clean.) */
1457 | enumlist ',' enumerator
1458 { $$ = chainon ($3, $1); }
1460 { $$ = error_mark_node; }
1466 { $$ = build_enumerator ($1, NULL_TREE); }
1467 | identifier '=' expr_no_commas
1468 { $$ = build_enumerator ($1, $3); }
1472 typed_typespecs absdcl
1473 { $$ = build_tree_list ($1, $2); }
1474 | nonempty_type_quals absdcl
1475 { $$ = build_tree_list ($1, $2); }
1478 absdcl: /* an absolute declarator */
1484 nonempty_type_quals:
1486 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
1487 | nonempty_type_quals TYPE_QUAL
1488 { $$ = tree_cons (NULL_TREE, $2, $1); }
1494 | type_quals TYPE_QUAL
1495 { $$ = tree_cons (NULL_TREE, $2, $1); }
1498 absdcl1: /* a nonempty absolute declarator */
1501 /* `(typedef)1' is `int'. */
1502 | '*' type_quals absdcl1 %prec UNARY
1503 { $$ = make_pointer_declarator ($2, $3); }
1504 | '*' type_quals %prec UNARY
1505 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1506 | absdcl1 '(' parmlist %prec '.'
1507 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1508 | absdcl1 '[' expr ']' %prec '.'
1509 { $$ = build_nt (ARRAY_REF, $1, $3); }
1510 | absdcl1 '[' ']' %prec '.'
1511 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1512 | '(' parmlist %prec '.'
1513 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1514 | '[' expr ']' %prec '.'
1515 { $$ = build_nt (ARRAY_REF, NULL_TREE, $2); }
1517 { $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); }
1518 | attributes setattrs absdcl1
1522 /* at least one statement, the first of which parses without error. */
1523 /* stmts is used only after decls, so an invalid first statement
1524 is actually regarded as an invalid decl and part of the decls. */
1527 lineno_stmt_or_label
1528 | stmts lineno_stmt_or_label
1540 pushlevel: /* empty */
1541 { emit_line_note (input_filename, lineno);
1545 expand_start_bindings (0);
1547 if (objc_method_context)
1553 /* Read zero or more forward-declarations for labels
1554 that nested functions can jump to. */
1559 pedwarn ("ANSI C forbids label declarations"); }
1564 | label_decls label_decl
1568 LABEL identifiers_or_typenames ';'
1570 for (link = $2; link; link = TREE_CHAIN (link))
1572 tree label = shadow_label (TREE_VALUE (link));
1573 C_DECLARED_LABEL_FLAG (label) = 1;
1574 declare_nonlocal_label (label);
1579 /* This is the body of a function definition.
1580 It causes syntax errors to ignore to the next openbrace. */
1588 { $$ = convert (void_type_node, integer_zero_node); }
1589 | '{' pushlevel maybe_label_decls decls xstmts '}'
1590 { emit_line_note (input_filename, lineno);
1591 expand_end_bindings (getdecls (), 1, 0);
1592 $$ = poplevel (1, 1, 0);
1593 if (yychar == CONSTANT || yychar == STRING)
1594 pop_momentary_nofree ();
1597 | '{' pushlevel maybe_label_decls error '}'
1598 { emit_line_note (input_filename, lineno);
1599 expand_end_bindings (getdecls (), kept_level_p (), 0);
1600 $$ = poplevel (kept_level_p (), 0, 0);
1601 if (yychar == CONSTANT || yychar == STRING)
1602 pop_momentary_nofree ();
1605 | '{' pushlevel maybe_label_decls stmts '}'
1606 { emit_line_note (input_filename, lineno);
1607 expand_end_bindings (getdecls (), kept_level_p (), 0);
1608 $$ = poplevel (kept_level_p (), 0, 0);
1609 if (yychar == CONSTANT || yychar == STRING)
1610 pop_momentary_nofree ();
1615 /* Value is number of statements counted as of the closeparen. */
1617 if_prefix lineno_labeled_stmt
1618 /* Make sure expand_end_cond is run once
1619 for each call to expand_start_cond.
1620 Otherwise a crash is likely. */
1626 { emit_line_note ($<filename>-1, $<lineno>0);
1627 expand_start_cond (truthvalue_conversion ($3), 0);
1628 $<itype>$ = stmt_count;
1629 if_stmt_file = $<filename>-1;
1630 if_stmt_line = $<lineno>0;
1631 position_after_white_space (); }
1634 /* This is a subroutine of stmt.
1635 It is used twice, once for valid DO statements
1636 and once for catching errors in parsing the end test. */
1640 emit_line_note ($<filename>-1, $<lineno>0);
1641 /* See comment in `while' alternative, above. */
1643 expand_start_loop_continue_elsewhere (1);
1644 position_after_white_space (); }
1645 lineno_labeled_stmt WHILE
1646 { expand_loop_continue_here (); }
1650 { $$ = input_filename; }
1657 lineno_labeled_stmt:
1658 save_filename save_lineno stmt
1660 /* | save_filename save_lineno error
1663 | save_filename save_lineno label lineno_labeled_stmt
1667 lineno_stmt_or_label:
1668 save_filename save_lineno stmt_or_label
1676 position_after_white_space ();
1677 next = getc (finput);
1678 ungetc (next, finput);
1679 if (pedantic && next == '}')
1680 pedwarn ("ANSI C forbids label at end of compound statement");
1684 /* Parse a single real statement, not including any labels. */
1691 emit_line_note ($<filename>-1, $<lineno>0);
1692 /* It appears that this should not be done--that a non-lvalue array
1693 shouldn't get an error if the value isn't used.
1694 Section 3.2.2.1 says that an array lvalue gets converted to a pointer
1695 if it appears as a top-level expression,
1696 but says nothing about non-lvalue arrays. */
1698 /* Call default_conversion to get an error
1699 on referring to a register array if pedantic. */
1700 if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
1701 || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
1702 $1 = default_conversion ($1);
1704 iterator_expand ($1);
1705 clear_momentary (); }
1707 { expand_start_else ();
1708 $<itype>1 = stmt_count;
1709 position_after_white_space (); }
1711 { expand_end_cond ();
1712 if (extra_warnings && stmt_count == $<itype>1)
1713 warning ("empty body in an else-statement"); }
1714 | simple_if %prec IF
1715 { expand_end_cond ();
1716 /* This warning is here instead of in simple_if, because we
1717 do not want a warning if an empty if is followed by an
1718 else statement. Increment stmt_count so we don't
1719 give a second error if this is a nested `if'. */
1720 if (extra_warnings && stmt_count++ == $<itype>1)
1721 warning_with_file_and_line (if_stmt_file, if_stmt_line,
1722 "empty body in an if-statement"); }
1723 /* Make sure expand_end_cond is run once
1724 for each call to expand_start_cond.
1725 Otherwise a crash is likely. */
1726 | simple_if ELSE error
1727 { expand_end_cond (); }
1730 emit_line_note ($<filename>-1, $<lineno>0);
1731 /* The emit_nop used to come before emit_line_note,
1732 but that made the nop seem like part of the preceding line.
1733 And that was confusing when the preceding line was
1734 inside of an if statement and was not really executed.
1735 I think it ought to work to put the nop after the line number.
1736 We will see. --rms, July 15, 1991. */
1739 { /* Don't start the loop till we have succeeded
1740 in parsing the end test. This is to make sure
1741 that we end every loop we start. */
1742 expand_start_loop (1);
1743 emit_line_note (input_filename, lineno);
1744 expand_exit_loop_if_false (NULL_PTR,
1745 truthvalue_conversion ($4));
1746 position_after_white_space (); }
1748 { expand_end_loop (); }
1751 { emit_line_note (input_filename, lineno);
1752 expand_exit_loop_if_false (NULL_PTR,
1753 truthvalue_conversion ($3));
1755 clear_momentary (); }
1756 /* This rule is needed to make sure we end every loop we start. */
1757 | do_stmt_start error
1758 { expand_end_loop ();
1759 clear_momentary (); }
1763 emit_line_note ($<filename>-1, $<lineno>0);
1764 /* See comment in `while' alternative, above. */
1766 if ($3) c_expand_expr_stmt ($3);
1767 /* Next step is to call expand_start_loop_continue_elsewhere,
1768 but wait till after we parse the entire for (...).
1769 Otherwise, invalid input might cause us to call that
1770 fn without calling expand_end_loop. */
1773 /* Can't emit now; wait till after expand_start_loop... */
1774 { $<lineno>7 = lineno;
1775 $<filename>$ = input_filename; }
1778 /* Start the loop. Doing this after parsing
1779 all the expressions ensures we will end the loop. */
1780 expand_start_loop_continue_elsewhere (1);
1781 /* Emit the end-test, with a line number. */
1782 emit_line_note ($<filename>8, $<lineno>7);
1784 expand_exit_loop_if_false (NULL_PTR,
1785 truthvalue_conversion ($6));
1786 /* Don't let the tree nodes for $9 be discarded by
1787 clear_momentary during the parsing of the next stmt. */
1789 $<lineno>7 = lineno;
1790 $<filename>8 = input_filename;
1791 position_after_white_space (); }
1793 { /* Emit the increment expression, with a line number. */
1794 emit_line_note ($<filename>8, $<lineno>7);
1795 expand_loop_continue_here ();
1797 c_expand_expr_stmt ($9);
1798 if (yychar == CONSTANT || yychar == STRING)
1799 pop_momentary_nofree ();
1802 expand_end_loop (); }
1803 | SWITCH '(' expr ')'
1805 emit_line_note ($<filename>-1, $<lineno>0);
1806 c_expand_start_case ($3);
1807 /* Don't let the tree nodes for $3 be discarded by
1808 clear_momentary during the parsing of the next stmt. */
1810 position_after_white_space (); }
1812 { expand_end_case ($3);
1813 if (yychar == CONSTANT || yychar == STRING)
1814 pop_momentary_nofree ();
1819 emit_line_note ($<filename>-1, $<lineno>0);
1820 if ( ! expand_exit_something ())
1821 error ("break statement not within loop or switch"); }
1824 emit_line_note ($<filename>-1, $<lineno>0);
1825 if (! expand_continue_loop (NULL_PTR))
1826 error ("continue statement not within a loop"); }
1829 emit_line_note ($<filename>-1, $<lineno>0);
1830 c_expand_return (NULL_TREE); }
1833 emit_line_note ($<filename>-1, $<lineno>0);
1834 c_expand_return ($2); }
1835 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
1837 emit_line_note ($<filename>-1, $<lineno>0);
1839 if ((TREE_CODE ($4) == ADDR_EXPR
1840 && TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST)
1841 || TREE_CODE ($4) == STRING_CST)
1844 error ("argument of `asm' is not a constant string"); }
1845 /* This is the case with just output operands. */
1846 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
1848 emit_line_note ($<filename>-1, $<lineno>0);
1849 c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
1850 $2 == ridpointers[(int)RID_VOLATILE],
1851 input_filename, lineno); }
1852 /* This is the case with input operands as well. */
1853 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';'
1855 emit_line_note ($<filename>-1, $<lineno>0);
1856 c_expand_asm_operands ($4, $6, $8, NULL_TREE,
1857 $2 == ridpointers[(int)RID_VOLATILE],
1858 input_filename, lineno); }
1859 /* This is the case with clobbered registers as well. */
1860 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
1861 asm_operands ':' asm_clobbers ')' ';'
1863 emit_line_note ($<filename>-1, $<lineno>0);
1864 c_expand_asm_operands ($4, $6, $8, $10,
1865 $2 == ridpointers[(int)RID_VOLATILE],
1866 input_filename, lineno); }
1867 | GOTO identifier ';'
1870 emit_line_note ($<filename>-1, $<lineno>0);
1871 decl = lookup_label ($2);
1874 TREE_USED (decl) = 1;
1880 emit_line_note ($<filename>-1, $<lineno>0);
1881 expand_computed_goto (convert (ptr_type_node, $3)); }
1886 all_iter_stmt_simple
1887 /* | all_iter_stmt_with_decl */
1890 all_iter_stmt_simple:
1893 /* The value returned by this action is */
1894 /* 1 if everything is OK */
1895 /* 0 in case of error or already bound iterator */
1898 if (TREE_CODE ($3) != VAR_DECL)
1899 error ("invalid `for (ITERATOR)' syntax");
1900 else if (! ITERATOR_P ($3))
1901 error ("`%s' is not an iterator",
1902 IDENTIFIER_POINTER (DECL_NAME ($3)));
1903 else if (ITERATOR_BOUND_P ($3))
1904 error ("`for (%s)' inside expansion of same iterator",
1905 IDENTIFIER_POINTER (DECL_NAME ($3)));
1909 iterator_for_loop_start ($3);
1915 iterator_for_loop_end ($3);
1918 /* This really should allow any kind of declaration,
1919 for generality. Fix it before turning it back on.
1921 all_iter_stmt_with_decl:
1922 FOR '(' ITERATOR pushlevel setspecs iterator_spec ')'
1924 */ /* The value returned by this action is */
1925 /* 1 if everything is OK */
1926 /* 0 in case of error or already bound iterator */
1928 iterator_for_loop_start ($6);
1932 iterator_for_loop_end ($6);
1933 emit_line_note (input_filename, lineno);
1934 expand_end_bindings (getdecls (), 1, 0);
1935 $<ttype>$ = poplevel (1, 1, 0);
1936 if (yychar == CONSTANT || yychar == STRING)
1937 pop_momentary_nofree ();
1943 /* Any kind of label, including jump labels and case labels.
1944 ANSI C accepts labels only before statements, but we allow them
1945 also at the end of a compound statement. */
1947 label: CASE expr_no_commas ':'
1948 { register tree value = check_case_value ($2);
1950 = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
1954 if (value != error_mark_node)
1957 int success = pushcase (value, convert_and_check,
1960 error ("case label not within a switch statement");
1961 else if (success == 2)
1963 error ("duplicate case value");
1964 error_with_decl (duplicate, "this is the first entry for that value");
1966 else if (success == 3)
1967 warning ("case value out of range");
1968 else if (success == 5)
1969 error ("case label within scope of cleanup or variable array");
1971 position_after_white_space (); }
1972 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
1973 { register tree value1 = check_case_value ($2);
1974 register tree value2 = check_case_value ($4);
1976 = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
1980 if (value1 != error_mark_node && value2 != error_mark_node)
1983 int success = pushcase_range (value1, value2,
1984 convert_and_check, label,
1987 error ("case label not within a switch statement");
1988 else if (success == 2)
1990 error ("duplicate case value");
1991 error_with_decl (duplicate, "this is the first entry for that value");
1993 else if (success == 3)
1994 warning ("case value out of range");
1995 else if (success == 4)
1996 warning ("empty case range");
1997 else if (success == 5)
1998 error ("case label within scope of cleanup or variable array");
2000 position_after_white_space (); }
2005 = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
2006 int success = pushcase (NULL_TREE, 0, label, &duplicate);
2009 error ("default label not within a switch statement");
2010 else if (success == 2)
2012 error ("multiple default labels in one switch");
2013 error_with_decl (duplicate, "this is the first default label");
2015 position_after_white_space (); }
2017 { tree label = define_label (input_filename, lineno, $1);
2021 expand_label (label);
2022 position_after_white_space (); }
2025 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2029 { emit_line_note (input_filename, lineno);
2032 { emit_line_note (input_filename, lineno); }
2041 /* These are the operands other than the first string and colon
2042 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2043 asm_operands: /* empty */
2045 | nonnull_asm_operands
2048 nonnull_asm_operands:
2050 | nonnull_asm_operands ',' asm_operand
2051 { $$ = chainon ($1, $3); }
2056 { $$ = build_tree_list ($1, $3); }
2061 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2062 | asm_clobbers ',' string
2063 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2066 /* This is what appears inside the parens in a function declarator.
2067 Its value is a list of ..._TYPE nodes. */
2070 clear_parm_order ();
2071 declare_parm_level (0); }
2074 parmlist_tags_warning ();
2075 poplevel (0, 0, 0); }
2083 pedwarn ("ANSI C forbids forward parameter declarations");
2084 /* Mark the forward decls as such. */
2085 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2086 TREE_ASM_WRITTEN (parm) = 1;
2087 clear_parm_order (); }
2091 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2094 /* This is what appears inside the parens in a function declarator.
2095 Is value is represented in the format that grokdeclarator expects. */
2096 parmlist_2: /* empty */
2097 { $$ = get_parm_info (0); }
2099 { $$ = get_parm_info (0);
2100 /* Gcc used to allow this as an extension. However, it does
2101 not work for all targets, and thus has been disabled.
2102 Also, since func (...) and func () are indistinguishable,
2103 it caused problems with the code in expand_builtin which
2104 tries to verify that BUILT_IN_NEXT_ARG is being used
2106 error ("ANSI C requires a named argument before `...'");
2109 { $$ = get_parm_info (1); }
2110 | parms ',' ELLIPSIS
2111 { $$ = get_parm_info (0); }
2116 { push_parm_decl ($1); }
2118 { push_parm_decl ($3); }
2121 /* A single parameter declaration or parameter type name,
2122 as found in a parmlist. */
2124 typed_declspecs parm_declarator
2125 { $$ = build_tree_list ($1, $2) ; }
2126 | typed_declspecs notype_declarator
2127 { $$ = build_tree_list ($1, $2) ; }
2128 | typed_declspecs absdcl
2129 { $$ = build_tree_list ($1, $2); }
2130 | declmods notype_declarator
2131 { $$ = build_tree_list ($1, $2) ; }
2133 { $$ = build_tree_list ($1, $2); }
2136 /* This is used in a function definition
2137 where either a parmlist or an identifier list is ok.
2138 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2139 parmlist_or_identifiers:
2141 clear_parm_order ();
2142 declare_parm_level (1); }
2143 parmlist_or_identifiers_1
2145 parmlist_tags_warning ();
2146 poplevel (0, 0, 0); }
2149 parmlist_or_identifiers_1:
2153 for (t = $1; t; t = TREE_CHAIN (t))
2154 if (TREE_VALUE (t) == NULL_TREE)
2155 error ("`...' in old-style identifier list");
2156 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2159 /* A nonempty list of identifiers. */
2162 { $$ = build_tree_list (NULL_TREE, $1); }
2163 | identifiers ',' IDENTIFIER
2164 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2167 /* A nonempty list of identifiers, including typenames. */
2168 identifiers_or_typenames:
2170 { $$ = build_tree_list (NULL_TREE, $1); }
2171 | identifiers_or_typenames ',' identifier
2172 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2176 /* Objective-C productions. */
2186 if (objc_implementation_context)
2188 finish_class (objc_implementation_context);
2189 objc_ivar_chain = NULL_TREE;
2190 objc_implementation_context = NULL_TREE;
2193 warning ("`@end' must appear in an implementation context");
2197 /* A nonempty list of identifiers. */
2200 { $$ = build_tree_list (NULL_TREE, $1); }
2201 | identifier_list ',' identifier
2202 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2206 CLASS identifier_list ';'
2208 objc_declare_class ($2);
2212 ALIAS identifier identifier ';'
2214 objc_declare_alias ($2, $3);
2218 INTERFACE identifier protocolrefs '{'
2220 objc_interface_context = objc_ivar_context
2221 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2222 objc_public_flag = 0;
2226 continue_class (objc_interface_context);
2231 finish_class (objc_interface_context);
2232 objc_interface_context = NULL_TREE;
2235 | INTERFACE identifier protocolrefs
2237 objc_interface_context
2238 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2239 continue_class (objc_interface_context);
2244 finish_class (objc_interface_context);
2245 objc_interface_context = NULL_TREE;
2248 | INTERFACE identifier ':' identifier protocolrefs '{'
2250 objc_interface_context = objc_ivar_context
2251 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2252 objc_public_flag = 0;
2256 continue_class (objc_interface_context);
2261 finish_class (objc_interface_context);
2262 objc_interface_context = NULL_TREE;
2265 | INTERFACE identifier ':' identifier protocolrefs
2267 objc_interface_context
2268 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2269 continue_class (objc_interface_context);
2274 finish_class (objc_interface_context);
2275 objc_interface_context = NULL_TREE;
2278 | IMPLEMENTATION identifier '{'
2280 objc_implementation_context = objc_ivar_context
2281 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2282 objc_public_flag = 0;
2287 = continue_class (objc_implementation_context);
2290 | IMPLEMENTATION identifier
2292 objc_implementation_context
2293 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2295 = continue_class (objc_implementation_context);
2298 | IMPLEMENTATION identifier ':' identifier '{'
2300 objc_implementation_context = objc_ivar_context
2301 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2302 objc_public_flag = 0;
2307 = continue_class (objc_implementation_context);
2310 | IMPLEMENTATION identifier ':' identifier
2312 objc_implementation_context
2313 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2315 = continue_class (objc_implementation_context);
2318 | INTERFACE identifier '(' identifier ')' protocolrefs
2320 objc_interface_context
2321 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2322 continue_class (objc_interface_context);
2327 finish_class (objc_interface_context);
2328 objc_interface_context = NULL_TREE;
2331 | IMPLEMENTATION identifier '(' identifier ')'
2333 objc_implementation_context
2334 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2336 = continue_class (objc_implementation_context);
2341 PROTOCOL identifier protocolrefs
2343 remember_protocol_qualifiers ();
2344 objc_interface_context
2345 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2349 forget_protocol_qualifiers();
2350 finish_protocol(objc_interface_context);
2351 objc_interface_context = NULL_TREE;
2360 | ARITHCOMPARE identifier_list ARITHCOMPARE
2362 if ($1 == LT_EXPR && $3 == GT_EXPR)
2370 ivar_decl_list visibility_spec ivar_decls
2375 PRIVATE { objc_public_flag = 2; }
2376 | PROTECTED { objc_public_flag = 0; }
2377 | PUBLIC { objc_public_flag = 1; }
2385 | ivar_decls ivar_decl ';'
2389 pedwarn ("extra semicolon in struct or union specified");
2394 /* There is a shift-reduce conflict here, because `components' may
2395 start with a `typename'. It happens that shifting (the default resolution)
2396 does the right thing, because it treats the `typename' as part of
2397 a `typed_typespecs'.
2399 It is possible that this same technique would allow the distinction
2400 between `notype_initdecls' and `initdecls' to be eliminated.
2401 But I am being cautious and not trying it. */
2404 typed_typespecs setspecs ivars
2407 resume_momentary ($2);
2409 | nonempty_type_quals setspecs ivars
2412 resume_momentary ($2);
2422 | ivars ',' ivar_declarator
2428 $$ = add_instance_variable (objc_ivar_context,
2430 $1, current_declspecs,
2433 | declarator ':' expr_no_commas
2435 $$ = add_instance_variable (objc_ivar_context,
2437 $1, current_declspecs, $3);
2439 | ':' expr_no_commas
2441 $$ = add_instance_variable (objc_ivar_context,
2444 current_declspecs, $2);
2451 remember_protocol_qualifiers ();
2452 if (objc_implementation_context)
2453 objc_inherit_code = CLASS_METHOD_DECL;
2455 fatal ("method definition not in class context");
2459 forget_protocol_qualifiers ();
2460 add_class_method (objc_implementation_context, $3);
2461 start_method_def ($3);
2462 objc_method_context = $3;
2466 continue_method_def ();
2470 finish_method_def ();
2471 objc_method_context = NULL_TREE;
2476 remember_protocol_qualifiers ();
2477 if (objc_implementation_context)
2478 objc_inherit_code = INSTANCE_METHOD_DECL;
2480 fatal ("method definition not in class context");
2484 forget_protocol_qualifiers ();
2485 add_instance_method (objc_implementation_context, $3);
2486 start_method_def ($3);
2487 objc_method_context = $3;
2491 continue_method_def ();
2495 finish_method_def ();
2496 objc_method_context = NULL_TREE;
2500 /* the reason for the strange actions in this rule
2501 is so that notype_initdecls when reached via datadef
2502 can find a valid list of type and sc specs in $0. */
2506 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2509 methodprotolist2: /* eliminates a shift/reduce conflict */
2512 | methodprotolist2 methodproto
2513 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2524 objc_inherit_code = CLASS_METHOD_DECL;
2528 add_class_method (objc_interface_context, $3);
2534 objc_inherit_code = INSTANCE_METHOD_DECL;
2538 add_instance_method (objc_interface_context, $3);
2544 '(' typename ')' unaryselector
2546 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2551 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2554 | '(' typename ')' keywordselector optparmlist
2556 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2559 | keywordselector optparmlist
2561 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2565 /* "optarglist" assumes that start_method_def has already been called...
2566 if it is not, the "xdecls" will not be placed in the proper scope */
2573 /* to get around the following situation: "int foo (int a) int b; {}" that
2574 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
2589 typed_declspecs setspecs myparms ';'
2590 { resume_momentary ($2); }
2591 | typed_declspecs ';'
2592 { shadow_tag ($1); }
2594 { pedwarn ("empty declaration"); }
2599 { push_parm_decl ($1); }
2600 | myparms ',' myparm
2601 { push_parm_decl ($3); }
2604 /* A single parameter declaration or parameter type name,
2605 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
2609 { $$ = build_tree_list (current_declspecs, $1) ; }
2611 { $$ = build_tree_list (current_declspecs, $1) ; }
2613 { $$ = build_tree_list (current_declspecs, $1) ; }
2623 /* oh what a kludge! */
2632 /* returns a tree list node generated by get_parm_info */
2645 | keywordselector keyworddecl
2647 $$ = chainon ($1, $2);
2659 ENUM { $$ = get_identifier (token_buffer); }
2660 | STRUCT { $$ = get_identifier (token_buffer); }
2661 | UNION { $$ = get_identifier (token_buffer); }
2662 | IF { $$ = get_identifier (token_buffer); }
2663 | ELSE { $$ = get_identifier (token_buffer); }
2664 | WHILE { $$ = get_identifier (token_buffer); }
2665 | DO { $$ = get_identifier (token_buffer); }
2666 | FOR { $$ = get_identifier (token_buffer); }
2667 | SWITCH { $$ = get_identifier (token_buffer); }
2668 | CASE { $$ = get_identifier (token_buffer); }
2669 | DEFAULT { $$ = get_identifier (token_buffer); }
2670 | BREAK { $$ = get_identifier (token_buffer); }
2671 | CONTINUE { $$ = get_identifier (token_buffer); }
2672 | RETURN { $$ = get_identifier (token_buffer); }
2673 | GOTO { $$ = get_identifier (token_buffer); }
2674 | ASM_KEYWORD { $$ = get_identifier (token_buffer); }
2675 | SIZEOF { $$ = get_identifier (token_buffer); }
2676 | TYPEOF { $$ = get_identifier (token_buffer); }
2677 | ALIGNOF { $$ = get_identifier (token_buffer); }
2678 | TYPESPEC | TYPE_QUAL
2682 selector ':' '(' typename ')' identifier
2684 $$ = build_keyword_decl ($1, $4, $6);
2687 | selector ':' identifier
2689 $$ = build_keyword_decl ($1, NULL_TREE, $3);
2692 | ':' '(' typename ')' identifier
2694 $$ = build_keyword_decl (NULL_TREE, $3, $5);
2699 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
2710 | keywordarglist keywordarg
2712 $$ = chainon ($1, $2);
2720 if (TREE_CHAIN ($1) == NULL_TREE)
2721 /* just return the expr., remove a level of indirection */
2722 $$ = TREE_VALUE ($1);
2724 /* we have a comma expr., we will collapse later */
2730 selector ':' keywordexpr
2732 $$ = build_tree_list ($1, $3);
2736 $$ = build_tree_list (NULL_TREE, $2);
2744 $$ = get_class_reference ($1);
2750 { objc_receiver_context = 1; }
2752 { objc_receiver_context = 0; }
2755 $$ = build_tree_list ($3, $5);
2766 | keywordnamelist keywordname
2768 $$ = chainon ($1, $2);
2775 $$ = build_tree_list ($1, NULL_TREE);
2779 $$ = build_tree_list (NULL_TREE, NULL_TREE);
2784 SELECTOR '(' selectorarg ')'
2791 PROTOCOL '(' identifier ')'
2797 /* extension to support C-structures in the archiver */
2800 ENCODE '(' typename ')'
2802 $$ = groktypename ($3);