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 Objective-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 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 ("ISO 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; ggc_collect(); } 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 ("ISO 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 ("ISO 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 { $$ = NEGATE_EXPR; }
416 if (warn_traditional && !in_system_header)
417 warning ("traditional C rejects the unary plus operator");
421 { $$ = 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 ("ISO 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 ("ISO 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
522 int SAVED_warn_strict_prototypes = warn_strict_prototypes;
523 /* This avoids warnings about unprototyped casts on
524 integers. E.g. "#define SIG_DFL (void(*)())0". */
525 if (TREE_CODE ($4) == INTEGER_CST)
526 warn_strict_prototypes = 0;
527 type = groktypename ($2);
528 warn_strict_prototypes = SAVED_warn_strict_prototypes;
529 $$ = build_c_cast (type, $4); }
530 | '(' typename ')' '{'
531 { start_init (NULL_TREE, NULL, 0);
532 $2 = groktypename ($2);
533 really_start_incremental_init ($2); }
534 initlist_maybe_comma '}' %prec UNARY
536 tree result = pop_init_level (0);
540 if (pedantic && ! flag_isoc99)
541 pedwarn ("ISO C89 forbids constructor expressions");
542 if (TYPE_NAME (type) != 0)
544 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
545 name = IDENTIFIER_POINTER (TYPE_NAME (type));
547 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
552 if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
554 int failure = complete_array_type (type, $$, 1);
563 | expr_no_commas '+' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas '-' expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas '*' expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '/' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas '%' expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas LSHIFT expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas RSHIFT expr_no_commas
576 { $$ = parser_build_binary_op ($2, $1, $3); }
577 | expr_no_commas ARITHCOMPARE expr_no_commas
578 { $$ = parser_build_binary_op ($2, $1, $3); }
579 | expr_no_commas EQCOMPARE expr_no_commas
580 { $$ = parser_build_binary_op ($2, $1, $3); }
581 | expr_no_commas '&' expr_no_commas
582 { $$ = parser_build_binary_op ($2, $1, $3); }
583 | expr_no_commas '|' expr_no_commas
584 { $$ = parser_build_binary_op ($2, $1, $3); }
585 | expr_no_commas '^' expr_no_commas
586 { $$ = parser_build_binary_op ($2, $1, $3); }
587 | expr_no_commas ANDAND
588 { $1 = truthvalue_conversion (default_conversion ($1));
589 skip_evaluation += $1 == boolean_false_node; }
591 { skip_evaluation -= $1 == boolean_false_node;
592 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
593 | expr_no_commas OROR
594 { $1 = truthvalue_conversion (default_conversion ($1));
595 skip_evaluation += $1 == boolean_true_node; }
597 { skip_evaluation -= $1 == boolean_true_node;
598 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
600 { $1 = truthvalue_conversion (default_conversion ($1));
601 skip_evaluation += $1 == boolean_false_node; }
603 { skip_evaluation += (($1 == boolean_true_node)
604 - ($1 == boolean_false_node)); }
606 { skip_evaluation -= $1 == boolean_true_node;
607 $$ = build_conditional_expr ($1, $4, $7); }
610 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
611 /* Make sure first operand is calculated only once. */
612 $<ttype>2 = save_expr ($1);
613 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
614 skip_evaluation += $1 == boolean_true_node; }
616 { skip_evaluation -= $1 == boolean_true_node;
617 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
618 | expr_no_commas '=' expr_no_commas
620 $$ = build_modify_expr ($1, NOP_EXPR, $3);
621 class = TREE_CODE_CLASS (TREE_CODE ($$));
622 if (class == 'e' || class == '1'
623 || class == '2' || class == '<')
624 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
626 | expr_no_commas ASSIGN expr_no_commas
628 $$ = build_modify_expr ($1, $2, $3);
629 /* This inhibits warnings in truthvalue_conversion. */
630 class = TREE_CODE_CLASS (TREE_CODE ($$));
631 if (class == 'e' || class == '1'
632 || class == '2' || class == '<')
633 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
640 if (yychar == YYEMPTY)
642 $$ = build_external_ref ($1, yychar == '(');
646 { $$ = combine_strings ($1); }
648 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
649 if (class == 'e' || class == '1'
650 || class == '2' || class == '<')
651 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
654 { $$ = error_mark_node; }
655 | compstmt_primary_start compstmt_nostart ')'
658 pedwarn ("ISO C forbids braced-groups within expressions");
660 rtl_exp = expand_end_stmt_expr ($1);
661 /* The statements have side effects, so the group does. */
662 TREE_SIDE_EFFECTS (rtl_exp) = 1;
664 if (TREE_CODE ($2) == BLOCK)
666 /* Make a BIND_EXPR for the BLOCK already made. */
667 $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
668 NULL_TREE, rtl_exp, $2);
669 /* Remove the block from the tree at this point.
670 It gets put back at the proper place
671 when the BIND_EXPR is expanded. */
677 | compstmt_primary_start error ')'
679 /* Make sure we call expand_end_stmt_expr. Otherwise
680 we are likely to lose sequences and crash later. */
682 expand_end_stmt_expr ($1);
683 $$ = error_mark_node;
685 | primary '(' exprlist ')' %prec '.'
686 { $$ = build_function_call ($1, $3); }
687 | primary '[' expr ']' %prec '.'
688 { $$ = build_array_ref ($1, $3); }
689 | primary '.' identifier
692 if (doing_objc_thang)
694 if (is_public ($1, $3))
695 $$ = build_component_ref ($1, $3);
697 $$ = error_mark_node;
701 $$ = build_component_ref ($1, $3);
703 | primary POINTSAT identifier
705 tree expr = build_indirect_ref ($1, "->");
708 if (doing_objc_thang)
710 if (is_public (expr, $3))
711 $$ = build_component_ref (expr, $3);
713 $$ = error_mark_node;
717 $$ = build_component_ref (expr, $3);
720 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
722 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
725 { $$ = build_message_expr ($1); }
727 { $$ = build_selector_expr ($1); }
729 { $$ = build_protocol_expr ($1); }
731 { $$ = build_encode_expr ($1); }
733 { $$ = build_objc_string_object ($1); }
737 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
743 static int last_lineno = 0;
744 static const char *last_input_filename = 0;
746 $$ = chainon ($1, $2);
748 if (warn_traditional && !in_system_header
749 && (lineno != last_lineno || !last_input_filename ||
750 strcmp (last_input_filename, input_filename)))
752 warning ("traditional C rejects string concatenation");
753 last_lineno = lineno;
754 last_input_filename = input_filename;
761 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
762 onto it, which is to be read as an ObjC string object. */
765 | objc_string OBJC_STRING
766 { $$ = chainon ($1, $2); }
770 old_style_parm_decls:
774 /* ... is used here to indicate a varargs function. */
777 pedwarn ("ISO C does not permit use of `varargs.h'"); }
780 /* The following are analogous to lineno_decl, decls and decl
781 except that they do not allow nested functions.
782 They are used for old-style parm decls. */
784 save_filename save_lineno datadecl
791 | datadecls lineno_datadecl
792 | lineno_datadecl errstmt
795 /* We don't allow prefix attributes here because they cause reduce/reduce
796 conflicts: we can't know whether we're parsing a function decl with
797 attribute suffix, or function defn with attribute prefix on first old
800 typed_declspecs_no_prefix_attr setspecs initdecls ';'
801 { current_declspecs = TREE_VALUE (declspec_stack);
802 prefix_attributes = TREE_PURPOSE (declspec_stack);
803 declspec_stack = TREE_CHAIN (declspec_stack); }
804 | declmods_no_prefix_attr setspecs notype_initdecls ';'
805 { current_declspecs = TREE_VALUE (declspec_stack);
806 prefix_attributes = TREE_PURPOSE (declspec_stack);
807 declspec_stack = TREE_CHAIN (declspec_stack); }
808 | typed_declspecs_no_prefix_attr ';'
809 { shadow_tag_warned ($1, 1);
810 pedwarn ("empty declaration"); }
811 | declmods_no_prefix_attr ';'
812 { pedwarn ("empty declaration"); }
815 /* This combination which saves a lineno before a decl
816 is the normal thing to use, rather than decl itself.
817 This is to avoid shift/reduce conflicts in contexts
818 where statement labels are allowed. */
820 save_filename save_lineno decl
828 | lineno_decl errstmt
831 /* records the type and storage class specs to use for processing
832 the declarators that follow.
833 Maintains a stack of outer-level values of current_declspecs,
834 for the sake of parm declarations nested in function declarators. */
835 setspecs: /* empty */
836 { pending_xref_error ();
837 declspec_stack = tree_cons (prefix_attributes,
840 split_specs_attrs ($<ttype>0,
841 ¤t_declspecs, &prefix_attributes); }
844 /* ??? Yuck. See after_type_declarator. */
845 setattrs: /* empty */
846 { prefix_attributes = chainon (prefix_attributes, $<ttype>0); }
850 typed_declspecs setspecs initdecls ';'
851 { current_declspecs = TREE_VALUE (declspec_stack);
852 prefix_attributes = TREE_PURPOSE (declspec_stack);
853 declspec_stack = TREE_CHAIN (declspec_stack); }
854 | declmods setspecs notype_initdecls ';'
855 { current_declspecs = TREE_VALUE (declspec_stack);
856 prefix_attributes = TREE_PURPOSE (declspec_stack);
857 declspec_stack = TREE_CHAIN (declspec_stack); }
858 | typed_declspecs setspecs nested_function
859 { current_declspecs = TREE_VALUE (declspec_stack);
860 prefix_attributes = TREE_PURPOSE (declspec_stack);
861 declspec_stack = TREE_CHAIN (declspec_stack); }
862 | declmods setspecs notype_nested_function
863 { current_declspecs = TREE_VALUE (declspec_stack);
864 prefix_attributes = TREE_PURPOSE (declspec_stack);
865 declspec_stack = TREE_CHAIN (declspec_stack); }
866 | typed_declspecs ';'
869 { pedwarn ("empty declaration"); }
871 { RESTORE_WARN_FLAGS ($1); }
874 /* Declspecs which contain at least one type specifier or typedef name.
875 (Just `const' or `volatile' is not enough.)
876 A typedef'd name following these is taken as a name to be declared.
877 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
880 typespec reserved_declspecs
881 { $$ = tree_cons (NULL_TREE, $1, $2); }
882 | declmods typespec reserved_declspecs
883 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
886 reserved_declspecs: /* empty */
888 | reserved_declspecs typespecqual_reserved
889 { $$ = tree_cons (NULL_TREE, $2, $1); }
890 | reserved_declspecs SCSPEC
891 { if (extra_warnings)
892 warning ("`%s' is not at beginning of declaration",
893 IDENTIFIER_POINTER ($2));
894 $$ = tree_cons (NULL_TREE, $2, $1); }
895 | reserved_declspecs attributes
896 { $$ = tree_cons ($2, NULL_TREE, $1); }
899 typed_declspecs_no_prefix_attr:
900 typespec reserved_declspecs_no_prefix_attr
901 { $$ = tree_cons (NULL_TREE, $1, $2); }
902 | declmods_no_prefix_attr typespec reserved_declspecs_no_prefix_attr
903 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
906 reserved_declspecs_no_prefix_attr:
909 | reserved_declspecs_no_prefix_attr typespecqual_reserved
910 { $$ = tree_cons (NULL_TREE, $2, $1); }
911 | reserved_declspecs_no_prefix_attr SCSPEC
912 { if (extra_warnings)
913 warning ("`%s' is not at beginning of declaration",
914 IDENTIFIER_POINTER ($2));
915 $$ = tree_cons (NULL_TREE, $2, $1); }
918 /* List of just storage classes, type modifiers, and prefix attributes.
919 A declaration can start with just this, but then it cannot be used
920 to redeclare a typedef-name.
921 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
924 declmods_no_prefix_attr
927 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
928 | declmods declmods_no_prefix_attr
929 { $$ = chainon ($2, $1); }
930 | declmods attributes
931 { $$ = tree_cons ($2, NULL_TREE, $1); }
934 declmods_no_prefix_attr:
936 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
937 TREE_STATIC ($$) = 1; }
939 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
940 | declmods_no_prefix_attr TYPE_QUAL
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declmods_no_prefix_attr SCSPEC
944 { if (extra_warnings && TREE_STATIC ($1))
945 warning ("`%s' is not at beginning of declaration",
946 IDENTIFIER_POINTER ($2));
947 $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = TREE_STATIC ($1); }
952 /* Used instead of declspecs where storage classes are not allowed
953 (that is, for typenames and structure components).
954 Don't accept a typedef-name if anything but a modifier precedes it. */
957 typespec reserved_typespecquals
958 { $$ = tree_cons (NULL_TREE, $1, $2); }
959 | nonempty_type_quals typespec reserved_typespecquals
960 { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
963 reserved_typespecquals: /* empty */
965 | reserved_typespecquals typespecqual_reserved
966 { $$ = tree_cons (NULL_TREE, $2, $1); }
969 /* A typespec (but not a type qualifier).
970 Once we have seen one of these in a declaration,
971 if a typedef name appears then it is being redeclared. */
976 { /* For a typedef name, record the meaning, not the name.
977 In case of `foo foo, bar;'. */
978 $$ = lookup_name ($1); }
980 | CLASSNAME protocolrefs
981 { $$ = get_static_reference ($1, $2); }
982 | OBJECTNAME protocolrefs
983 { $$ = get_object_reference ($2); }
985 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
986 - nisse@lysator.liu.se */
987 | non_empty_protocolrefs
988 { $$ = get_object_reference ($1); }
990 | TYPEOF '(' expr ')'
991 { $$ = TREE_TYPE ($3); }
992 | TYPEOF '(' typename ')'
993 { $$ = groktypename ($3); }
996 /* A typespec that is a reserved word, or a type qualifier. */
998 typespecqual_reserved: TYPESPEC
1005 | initdecls ',' initdcl
1010 | notype_initdecls ',' initdcl
1016 | ASM_KEYWORD '(' string ')'
1017 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1023 declarator maybeasm maybe_attribute '='
1024 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1025 $3, prefix_attributes);
1026 start_init ($<ttype>$, $2, global_bindings_p ()); }
1028 /* Note how the declaration of the variable is in effect while its init is parsed! */
1030 finish_decl ($<ttype>5, $6, $2); }
1031 | declarator maybeasm maybe_attribute
1032 { tree d = start_decl ($1, current_declspecs, 0,
1033 $3, prefix_attributes);
1034 finish_decl (d, NULL_TREE, $2);
1039 notype_declarator maybeasm maybe_attribute '='
1040 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1041 $3, prefix_attributes);
1042 start_init ($<ttype>$, $2, global_bindings_p ()); }
1044 /* Note how the declaration of the variable is in effect while its init is parsed! */
1046 decl_attributes ($<ttype>5, $3, prefix_attributes);
1047 finish_decl ($<ttype>5, $6, $2); }
1048 | notype_declarator maybeasm maybe_attribute
1049 { tree d = start_decl ($1, current_declspecs, 0,
1050 $3, prefix_attributes);
1051 finish_decl (d, NULL_TREE, $2); }
1053 /* the * rules are dummies to accept the Apollo extended syntax
1054 so that the header files compile. */
1065 | attributes attribute
1066 { $$ = chainon ($1, $2); }
1070 ATTRIBUTE '(' '(' attribute_list ')' ')'
1077 | attribute_list ',' attrib
1078 { $$ = chainon ($1, $3); }
1085 { $$ = build_tree_list ($1, NULL_TREE); }
1086 | any_word '(' IDENTIFIER ')'
1087 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1088 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1089 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1090 | any_word '(' exprlist ')'
1091 { $$ = build_tree_list ($1, $3); }
1094 /* This still leaves out most reserved keywords,
1095 shouldn't we include them? */
1104 /* Initializers. `init' is the entry point. */
1109 { really_start_incremental_init (NULL_TREE); }
1110 initlist_maybe_comma '}'
1111 { $$ = pop_init_level (0); }
1113 { $$ = error_mark_node; }
1116 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1117 initlist_maybe_comma:
1120 pedwarn ("ISO C forbids empty initializer braces"); }
1121 | initlist1 maybecomma
1126 | initlist1 ',' initelt
1129 /* `initelt' is a single element of an initializer.
1130 It may use braces. */
1132 designator_list '=' initval
1133 | designator initval
1135 { set_init_label ($1); }
1142 { push_init_level (0); }
1143 initlist_maybe_comma '}'
1144 { process_init_element (pop_init_level (0)); }
1146 { process_init_element ($1); }
1152 | designator_list designator
1157 { set_init_label ($2); }
1158 /* These are for labeled elements. The syntax for an array element
1159 initializer conflicts with the syntax for an Objective-C message,
1160 so don't include these productions in the Objective-C grammar. */
1162 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1163 { set_init_index ($2, $4); }
1164 | '[' expr_no_commas ']'
1165 { set_init_index ($2, NULL_TREE); }
1172 pedwarn ("ISO C forbids nested functions");
1174 push_function_context ();
1175 if (! start_function (current_declspecs, $1,
1176 prefix_attributes, NULL_TREE))
1178 pop_function_context ();
1181 reinit_parse_for_function (); }
1182 old_style_parm_decls
1183 { store_parm_decls (); }
1184 /* This used to use compstmt_or_error.
1185 That caused a bug with input `f(g) int g {}',
1186 where the use of YYERROR1 above caused an error
1187 which then was handled by compstmt_or_error.
1188 There followed a repeated execution of that same rule,
1189 which called YYERROR1 again, and so on. */
1191 { finish_function (1);
1192 pop_function_context (); }
1195 notype_nested_function:
1198 pedwarn ("ISO C forbids nested functions");
1200 push_function_context ();
1201 if (! start_function (current_declspecs, $1,
1202 prefix_attributes, NULL_TREE))
1204 pop_function_context ();
1207 reinit_parse_for_function (); }
1208 old_style_parm_decls
1209 { store_parm_decls (); }
1210 /* This used to use compstmt_or_error.
1211 That caused a bug with input `f(g) int g {}',
1212 where the use of YYERROR1 above caused an error
1213 which then was handled by compstmt_or_error.
1214 There followed a repeated execution of that same rule,
1215 which called YYERROR1 again, and so on. */
1217 { finish_function (1);
1218 pop_function_context (); }
1221 /* Any kind of declarator (thus, all declarators allowed
1222 after an explicit typespec). */
1225 after_type_declarator
1229 /* A declarator that is allowed only after an explicit typespec. */
1231 after_type_declarator:
1232 '(' after_type_declarator ')'
1234 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1235 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1236 /* | after_type_declarator '(' error ')' %prec '.'
1237 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1238 poplevel (0, 0, 0); } */
1239 | after_type_declarator '[' expr ']' %prec '.'
1240 { $$ = build_nt (ARRAY_REF, $1, $3); }
1241 | after_type_declarator '[' ']' %prec '.'
1242 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1243 | '*' type_quals after_type_declarator %prec UNARY
1244 { $$ = make_pointer_declarator ($2, $3); }
1245 /* ??? Yuck. setattrs is a quick hack. We can't use
1246 prefix_attributes because $1 only applies to this
1247 declarator. We assume setspecs has already been done.
1248 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1249 attributes could be recognized here or in `attributes'). */
1250 | attributes setattrs after_type_declarator
1258 /* Kinds of declarator that can appear in a parameter list
1259 in addition to notype_declarator. This is like after_type_declarator
1260 but does not allow a typedef name in parentheses as an identifier
1261 (because it would conflict with a function with that typedef as arg). */
1264 parm_declarator '(' parmlist_or_identifiers %prec '.'
1265 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1266 /* | parm_declarator '(' error ')' %prec '.'
1267 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1268 poplevel (0, 0, 0); } */
1270 | parm_declarator '[' '*' ']' %prec '.'
1271 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
1273 error ("`[*]' in parameter declaration only allowed in ISO C 99");
1276 | parm_declarator '[' expr ']' %prec '.'
1277 { $$ = build_nt (ARRAY_REF, $1, $3); }
1278 | parm_declarator '[' ']' %prec '.'
1279 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1280 | '*' type_quals parm_declarator %prec UNARY
1281 { $$ = make_pointer_declarator ($2, $3); }
1282 /* ??? Yuck. setattrs is a quick hack. We can't use
1283 prefix_attributes because $1 only applies to this
1284 declarator. We assume setspecs has already been done.
1285 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1286 attributes could be recognized here or in `attributes'). */
1287 | attributes setattrs parm_declarator
1292 /* A declarator allowed whether or not there has been
1293 an explicit typespec. These cannot redeclare a typedef-name. */
1296 notype_declarator '(' parmlist_or_identifiers %prec '.'
1297 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1298 /* | notype_declarator '(' error ')' %prec '.'
1299 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1300 poplevel (0, 0, 0); } */
1301 | '(' notype_declarator ')'
1303 | '*' type_quals notype_declarator %prec UNARY
1304 { $$ = make_pointer_declarator ($2, $3); }
1306 | notype_declarator '[' '*' ']' %prec '.'
1307 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
1309 error ("`[*]' in parameter declaration only allowed in ISO C 99");
1312 | notype_declarator '[' expr ']' %prec '.'
1313 { $$ = build_nt (ARRAY_REF, $1, $3); }
1314 | notype_declarator '[' ']' %prec '.'
1315 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1316 /* ??? Yuck. setattrs is a quick hack. We can't use
1317 prefix_attributes because $1 only applies to this
1318 declarator. We assume setspecs has already been done.
1319 setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
1320 attributes could be recognized here or in `attributes'). */
1321 | attributes setattrs notype_declarator
1348 struct_head identifier '{'
1349 { $$ = start_struct (RECORD_TYPE, $2);
1350 /* Start scope of tag before parsing components. */
1352 component_decl_list '}' maybe_attribute
1353 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1354 | struct_head '{' component_decl_list '}' maybe_attribute
1355 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1356 $3, chainon ($1, $5));
1358 | struct_head identifier
1359 { $$ = xref_tag (RECORD_TYPE, $2); }
1360 | union_head identifier '{'
1361 { $$ = start_struct (UNION_TYPE, $2); }
1362 component_decl_list '}' maybe_attribute
1363 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1364 | union_head '{' component_decl_list '}' maybe_attribute
1365 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1366 $3, chainon ($1, $5));
1368 | union_head identifier
1369 { $$ = xref_tag (UNION_TYPE, $2); }
1370 | enum_head identifier '{'
1371 { $$ = start_enum ($2); }
1372 enumlist maybecomma_warn '}' maybe_attribute
1373 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1374 chainon ($1, $8)); }
1376 { $$ = start_enum (NULL_TREE); }
1377 enumlist maybecomma_warn '}' maybe_attribute
1378 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1379 chainon ($1, $7)); }
1380 | enum_head identifier
1381 { $$ = xref_tag (ENUMERAL_TYPE, $2); }
1392 { if (pedantic && ! flag_isoc99)
1393 pedwarn ("comma at end of enumerator list"); }
1396 component_decl_list:
1397 component_decl_list2
1399 | component_decl_list2 component_decl
1400 { $$ = chainon ($1, $2);
1401 pedwarn ("no semicolon at end of struct or union"); }
1404 component_decl_list2: /* empty */
1406 | component_decl_list2 component_decl ';'
1407 { $$ = chainon ($1, $2); }
1408 | component_decl_list2 ';'
1410 pedwarn ("extra semicolon in struct or union specified"); }
1412 /* foo(sizeof(struct{ @defs(ClassName)})); */
1413 | DEFS '(' CLASSNAME ')'
1415 tree interface = lookup_interface ($3);
1418 $$ = get_class_ivars (interface);
1421 error ("Cannot find interface declaration for `%s'",
1422 IDENTIFIER_POINTER ($3));
1429 /* There is a shift-reduce conflict here, because `components' may
1430 start with a `typename'. It happens that shifting (the default resolution)
1431 does the right thing, because it treats the `typename' as part of
1432 a `typed_typespecs'.
1434 It is possible that this same technique would allow the distinction
1435 between `notype_initdecls' and `initdecls' to be eliminated.
1436 But I am being cautious and not trying it. */
1439 typed_typespecs setspecs components
1441 current_declspecs = TREE_VALUE (declspec_stack);
1442 prefix_attributes = TREE_PURPOSE (declspec_stack);
1443 declspec_stack = TREE_CHAIN (declspec_stack); }
1444 | typed_typespecs setspecs save_filename save_lineno maybe_attribute
1446 /* Support for unnamed structs or unions as members of
1447 structs or unions (which is [a] useful and [b] supports
1450 pedwarn ("ISO C doesn't support unnamed structs/unions");
1452 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1453 current_declspecs = TREE_VALUE (declspec_stack);
1454 prefix_attributes = TREE_PURPOSE (declspec_stack);
1455 declspec_stack = TREE_CHAIN (declspec_stack);
1457 | nonempty_type_quals setspecs components
1459 current_declspecs = TREE_VALUE (declspec_stack);
1460 prefix_attributes = TREE_PURPOSE (declspec_stack);
1461 declspec_stack = TREE_CHAIN (declspec_stack); }
1462 | nonempty_type_quals
1464 pedwarn ("ISO C forbids member declarations with no members");
1469 | extension component_decl
1471 RESTORE_WARN_FLAGS ($1); }
1475 component_declarator
1476 | components ',' component_declarator
1477 { $$ = chainon ($1, $3); }
1480 component_declarator:
1481 save_filename save_lineno declarator maybe_attribute
1482 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1483 decl_attributes ($$, $4, prefix_attributes); }
1484 | save_filename save_lineno
1485 declarator ':' expr_no_commas maybe_attribute
1486 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1487 decl_attributes ($$, $6, prefix_attributes); }
1488 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1489 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1490 decl_attributes ($$, $5, prefix_attributes); }
1493 /* We chain the enumerators in reverse order.
1494 They are put in forward order where enumlist is used.
1495 (The order used to be significant, but no longer is so.
1496 However, we still maintain the order, just to be clean.) */
1500 | enumlist ',' enumerator
1501 { if ($1 == error_mark_node)
1504 $$ = chainon ($3, $1); }
1506 { $$ = error_mark_node; }
1512 { $$ = build_enumerator ($1, NULL_TREE); }
1513 | identifier '=' expr_no_commas
1514 { $$ = build_enumerator ($1, $3); }
1518 typed_typespecs absdcl
1519 { $$ = build_tree_list ($1, $2); }
1520 | nonempty_type_quals absdcl
1521 { $$ = build_tree_list ($1, $2); }
1524 absdcl: /* an absolute declarator */
1530 nonempty_type_quals:
1532 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
1533 | nonempty_type_quals TYPE_QUAL
1534 { $$ = tree_cons (NULL_TREE, $2, $1); }
1540 | type_quals TYPE_QUAL
1541 { $$ = tree_cons (NULL_TREE, $2, $1); }
1544 absdcl1: /* a nonempty absolute declarator */
1547 /* `(typedef)1' is `int'. */
1548 | '*' type_quals absdcl1 %prec UNARY
1549 { $$ = make_pointer_declarator ($2, $3); }
1550 | '*' type_quals %prec UNARY
1551 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1552 | absdcl1 '(' parmlist %prec '.'
1553 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1554 | absdcl1 '[' expr ']' %prec '.'
1555 { $$ = build_nt (ARRAY_REF, $1, $3); }
1556 | absdcl1 '[' ']' %prec '.'
1557 { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
1558 | '(' parmlist %prec '.'
1559 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1560 | '[' expr ']' %prec '.'
1561 { $$ = build_nt (ARRAY_REF, NULL_TREE, $2); }
1563 { $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); }
1564 /* ??? It appears we have to support attributes here, however
1565 using prefix_attributes is wrong. */
1566 | attributes setattrs absdcl1
1570 /* at least one statement, the first of which parses without error. */
1571 /* stmts is used only after decls, so an invalid first statement
1572 is actually regarded as an invalid decl and part of the decls. */
1575 lineno_stmt_or_labels
1578 pedwarn ("ISO C forbids label at end of compound statement");
1582 lineno_stmt_or_labels:
1583 lineno_stmt_or_label
1584 | lineno_stmt_or_labels lineno_stmt_or_label
1586 | lineno_stmt_or_labels errstmt
1598 pushlevel: /* empty */
1599 { emit_line_note (input_filename, lineno);
1602 expand_start_bindings (0);
1604 if (objc_method_context)
1610 /* Read zero or more forward-declarations for labels
1611 that nested functions can jump to. */
1616 pedwarn ("ISO C forbids label declarations"); }
1621 | label_decls label_decl
1625 LABEL identifiers_or_typenames ';'
1627 for (link = $2; link; link = TREE_CHAIN (link))
1629 tree label = shadow_label (TREE_VALUE (link));
1630 C_DECLARED_LABEL_FLAG (label) = 1;
1631 declare_nonlocal_label (label);
1636 /* This is the body of a function definition.
1637 It causes syntax errors to ignore to the next openbrace. */
1644 compstmt_start: '{' { compstmt_count++; }
1646 compstmt_nostart: '}'
1647 { $$ = convert (void_type_node, integer_zero_node); }
1648 | pushlevel maybe_label_decls decls xstmts '}'
1649 { emit_line_note (input_filename, lineno);
1650 expand_end_bindings (getdecls (), 1, 0);
1651 $$ = poplevel (1, 1, 0); }
1652 | pushlevel maybe_label_decls error '}'
1653 { emit_line_note (input_filename, lineno);
1654 expand_end_bindings (getdecls (), kept_level_p (), 0);
1655 $$ = poplevel (kept_level_p (), 0, 0); }
1656 | pushlevel maybe_label_decls stmts '}'
1657 { emit_line_note (input_filename, lineno);
1658 expand_end_bindings (getdecls (), kept_level_p (), 0);
1659 $$ = poplevel (kept_level_p (), 0, 0); }
1662 compstmt_primary_start:
1664 { if (current_function_decl == 0)
1666 error ("braced-group within expression allowed only inside a function");
1669 /* We must force a BLOCK for this level
1670 so that, if it is not expanded later,
1671 there is a way to turn off the entire subtree of blocks
1672 that are contained in it. */
1674 push_label_level ();
1675 $$ = expand_start_stmt_expr ();
1679 compstmt: compstmt_start compstmt_nostart
1683 /* Value is number of statements counted as of the closeparen. */
1685 if_prefix lineno_labeled_stmt
1686 /* Make sure c_expand_end_cond is run once
1687 for each call to c_expand_start_cond.
1688 Otherwise a crash is likely. */
1694 { emit_line_note ($<filename>-1, $<lineno>0);
1695 c_expand_start_cond (truthvalue_conversion ($3), 0,
1697 $<itype>$ = stmt_count;
1698 if_stmt_file = $<filename>-1;
1699 if_stmt_line = $<lineno>0;
1700 position_after_white_space (); }
1703 /* This is a subroutine of stmt.
1704 It is used twice, once for valid DO statements
1705 and once for catching errors in parsing the end test. */
1710 emit_line_note ($<filename>-1, $<lineno>0);
1711 /* See comment in `while' alternative, above. */
1713 expand_start_loop_continue_elsewhere (1);
1714 position_after_white_space (); }
1715 lineno_labeled_stmt WHILE
1716 { expand_loop_continue_here (); }
1720 { $$ = input_filename; }
1727 lineno_labeled_stmt:
1728 save_filename save_lineno stmt
1730 /* | save_filename save_lineno error
1733 | save_filename save_lineno label lineno_labeled_stmt
1737 lineno_stmt_or_label:
1738 save_filename save_lineno stmt_or_label
1749 /* Parse a single real statement, not including any labels. */
1755 emit_line_note ($<filename>-1, $<lineno>0);
1756 /* It appears that this should not be done--that a non-lvalue array
1757 shouldn't get an error if the value isn't used.
1758 Section 3.2.2.1 says that an array lvalue gets converted to a pointer
1759 if it appears as a top-level expression,
1760 but says nothing about non-lvalue arrays. */
1762 /* Call default_conversion to get an error
1763 on referring to a register array if pedantic. */
1764 if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
1765 || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
1766 $1 = default_conversion ($1);
1768 expand_expr_stmt ($1); }
1770 { c_expand_start_else ();
1771 $<itype>1 = stmt_count;
1772 position_after_white_space (); }
1774 { c_expand_end_cond ();
1775 if (extra_warnings && stmt_count == $<itype>1)
1776 warning ("empty body in an else-statement"); }
1777 | simple_if %prec IF
1778 { c_expand_end_cond ();
1779 /* This warning is here instead of in simple_if, because we
1780 do not want a warning if an empty if is followed by an
1781 else statement. Increment stmt_count so we don't
1782 give a second error if this is a nested `if'. */
1783 if (extra_warnings && stmt_count++ == $<itype>1)
1784 warning_with_file_and_line (if_stmt_file, if_stmt_line,
1785 "empty body in an if-statement"); }
1786 /* Make sure c_expand_end_cond is run once
1787 for each call to c_expand_start_cond.
1788 Otherwise a crash is likely. */
1789 | simple_if ELSE error
1790 { c_expand_end_cond (); }
1793 emit_line_note ($<filename>-1, $<lineno>0);
1794 /* The emit_nop used to come before emit_line_note,
1795 but that made the nop seem like part of the preceding line.
1796 And that was confusing when the preceding line was
1797 inside of an if statement and was not really executed.
1798 I think it ought to work to put the nop after the line number.
1799 We will see. --rms, July 15, 1991. */
1802 { /* Don't start the loop till we have succeeded
1803 in parsing the end test. This is to make sure
1804 that we end every loop we start. */
1805 expand_start_loop (1);
1806 emit_line_note (input_filename, lineno);
1807 expand_exit_loop_if_false (NULL_PTR,
1808 truthvalue_conversion ($4));
1809 position_after_white_space (); }
1811 { expand_end_loop (); }
1814 { emit_line_note (input_filename, lineno);
1815 expand_exit_loop_if_false (NULL_PTR,
1816 truthvalue_conversion ($3));
1817 expand_end_loop (); }
1818 /* This rule is needed to make sure we end every loop we start. */
1819 | do_stmt_start error
1820 { expand_end_loop (); }
1824 emit_line_note ($<filename>-1, $<lineno>0);
1825 /* See comment in `while' alternative, above. */
1827 if ($3) c_expand_expr_stmt ($3);
1828 /* Next step is to call expand_start_loop_continue_elsewhere,
1829 but wait till after we parse the entire for (...).
1830 Otherwise, invalid input might cause us to call that
1831 fn without calling expand_end_loop. */
1834 /* Can't emit now; wait till after expand_start_loop... */
1835 { $<lineno>7 = lineno;
1836 $<filename>$ = input_filename; }
1839 /* Start the loop. Doing this after parsing
1840 all the expressions ensures we will end the loop. */
1841 expand_start_loop_continue_elsewhere (1);
1842 /* Emit the end-test, with a line number. */
1843 emit_line_note ($<filename>8, $<lineno>7);
1845 expand_exit_loop_if_false (NULL_PTR,
1846 truthvalue_conversion ($6));
1847 $<lineno>7 = lineno;
1848 $<filename>8 = input_filename;
1849 position_after_white_space (); }
1851 { /* Emit the increment expression, with a line number. */
1852 emit_line_note ($<filename>8, $<lineno>7);
1853 expand_loop_continue_here ();
1855 c_expand_expr_stmt ($9);
1856 expand_end_loop (); }
1857 | SWITCH '(' expr ')'
1859 emit_line_note ($<filename>-1, $<lineno>0);
1860 c_expand_start_case ($3);
1861 position_after_white_space (); }
1863 { expand_end_case ($3); }
1865 { build_break_stmt ();
1867 genrtl_break_stmt (); }
1869 { build_continue_stmt ();
1871 genrtl_continue_stmt (); }
1873 { tree return_stmt = build_return_stmt (NULL_TREE);
1875 genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
1877 { tree return_stmt = build_return_stmt ($2);
1879 genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
1880 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
1882 emit_line_note ($<filename>-1, $<lineno>0);
1884 if ((TREE_CODE ($4) == ADDR_EXPR
1885 && TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST)
1886 || TREE_CODE ($4) == STRING_CST)
1889 error ("argument of `asm' is not a constant string"); }
1890 /* This is the case with just output operands. */
1891 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
1893 emit_line_note ($<filename>-1, $<lineno>0);
1894 c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
1895 $2 == ridpointers[(int)RID_VOLATILE],
1896 input_filename, lineno); }
1897 /* This is the case with input operands as well. */
1898 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';'
1900 emit_line_note ($<filename>-1, $<lineno>0);
1901 c_expand_asm_operands ($4, $6, $8, NULL_TREE,
1902 $2 == ridpointers[(int)RID_VOLATILE],
1903 input_filename, lineno); }
1904 /* This is the case with clobbered registers as well. */
1905 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
1906 asm_operands ':' asm_clobbers ')' ';'
1908 emit_line_note ($<filename>-1, $<lineno>0);
1909 c_expand_asm_operands ($4, $6, $8, $10,
1910 $2 == ridpointers[(int)RID_VOLATILE],
1911 input_filename, lineno); }
1912 | GOTO identifier ';'
1915 emit_line_note ($<filename>-1, $<lineno>0);
1916 decl = lookup_label ($2);
1919 TREE_USED (decl) = 1;
1925 pedwarn ("ISO C forbids `goto *expr;'");
1927 emit_line_note ($<filename>-1, $<lineno>0);
1928 expand_computed_goto (convert (ptr_type_node, $3)); }
1932 /* Any kind of label, including jump labels and case labels.
1933 ANSI C accepts labels only before statements, but we allow them
1934 also at the end of a compound statement. */
1936 label: CASE expr_no_commas ':'
1937 { tree case_label_tree = build_case_label ($2, NULL_TREE);
1939 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1940 position_after_white_space ();
1942 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
1943 { tree case_label_tree = build_case_label ($2, $4);
1945 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1946 position_after_white_space ();
1949 { tree case_label_tree = build_case_label (NULL_TREE, NULL_TREE);
1951 genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
1952 position_after_white_space ();
1954 | identifier ':' save_filename save_lineno maybe_attribute
1955 { tree label = define_label ($3, $4, $1);
1960 expand_label (label);
1961 decl_attributes (label, $5, NULL_TREE);
1963 position_after_white_space (); }
1966 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
1970 { emit_line_note (input_filename, lineno);
1973 { emit_line_note (input_filename, lineno); }
1982 /* These are the operands other than the first string and colon
1983 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
1984 asm_operands: /* empty */
1986 | nonnull_asm_operands
1989 nonnull_asm_operands:
1991 | nonnull_asm_operands ',' asm_operand
1992 { $$ = chainon ($1, $3); }
1997 { $$ = build_tree_list ($1, $3); }
2002 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2003 | asm_clobbers ',' string
2004 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2007 /* This is what appears inside the parens in a function declarator.
2008 Its value is a list of ..._TYPE nodes. */
2011 clear_parm_order ();
2012 declare_parm_level (0); }
2015 parmlist_tags_warning ();
2016 poplevel (0, 0, 0); }
2024 pedwarn ("ISO C forbids forward parameter declarations");
2025 /* Mark the forward decls as such. */
2026 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2027 TREE_ASM_WRITTEN (parm) = 1;
2028 clear_parm_order (); }
2032 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2035 /* This is what appears inside the parens in a function declarator.
2036 Is value is represented in the format that grokdeclarator expects. */
2037 parmlist_2: /* empty */
2038 { $$ = get_parm_info (0); }
2040 { $$ = get_parm_info (0);
2041 /* Gcc used to allow this as an extension. However, it does
2042 not work for all targets, and thus has been disabled.
2043 Also, since func (...) and func () are indistinguishable,
2044 it caused problems with the code in expand_builtin which
2045 tries to verify that BUILT_IN_NEXT_ARG is being used
2047 error ("ISO C requires a named argument before `...'");
2050 { $$ = get_parm_info (1); }
2051 | parms ',' ELLIPSIS
2052 { $$ = get_parm_info (0); }
2057 { push_parm_decl ($1); }
2059 { push_parm_decl ($3); }
2062 /* A single parameter declaration or parameter type name,
2063 as found in a parmlist. */
2065 typed_declspecs setspecs parm_declarator maybe_attribute
2066 { $$ = build_tree_list (build_tree_list (current_declspecs,
2068 build_tree_list (prefix_attributes,
2070 current_declspecs = TREE_VALUE (declspec_stack);
2071 prefix_attributes = TREE_PURPOSE (declspec_stack);
2072 declspec_stack = TREE_CHAIN (declspec_stack); }
2073 | typed_declspecs setspecs notype_declarator maybe_attribute
2074 { $$ = build_tree_list (build_tree_list (current_declspecs,
2076 build_tree_list (prefix_attributes,
2078 current_declspecs = TREE_VALUE (declspec_stack);
2079 prefix_attributes = TREE_PURPOSE (declspec_stack);
2080 declspec_stack = TREE_CHAIN (declspec_stack); }
2081 | typed_declspecs setspecs absdcl maybe_attribute
2082 { $$ = build_tree_list (build_tree_list (current_declspecs,
2084 build_tree_list (prefix_attributes,
2086 current_declspecs = TREE_VALUE (declspec_stack);
2087 prefix_attributes = TREE_PURPOSE (declspec_stack);
2088 declspec_stack = TREE_CHAIN (declspec_stack); }
2089 | declmods setspecs notype_declarator maybe_attribute
2090 { $$ = build_tree_list (build_tree_list (current_declspecs,
2092 build_tree_list (prefix_attributes,
2094 current_declspecs = TREE_VALUE (declspec_stack);
2095 prefix_attributes = TREE_PURPOSE (declspec_stack);
2096 declspec_stack = TREE_CHAIN (declspec_stack); }
2098 | declmods setspecs absdcl maybe_attribute
2099 { $$ = build_tree_list (build_tree_list (current_declspecs,
2101 build_tree_list (prefix_attributes,
2103 current_declspecs = TREE_VALUE (declspec_stack);
2104 prefix_attributes = TREE_PURPOSE (declspec_stack);
2105 declspec_stack = TREE_CHAIN (declspec_stack); }
2108 /* This is used in a function definition
2109 where either a parmlist or an identifier list is ok.
2110 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2111 parmlist_or_identifiers:
2113 clear_parm_order ();
2114 declare_parm_level (1); }
2115 parmlist_or_identifiers_1
2117 parmlist_tags_warning ();
2118 poplevel (0, 0, 0); }
2121 parmlist_or_identifiers_1:
2125 for (t = $1; t; t = TREE_CHAIN (t))
2126 if (TREE_VALUE (t) == NULL_TREE)
2127 error ("`...' in old-style identifier list");
2128 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2131 /* A nonempty list of identifiers. */
2134 { $$ = build_tree_list (NULL_TREE, $1); }
2135 | identifiers ',' IDENTIFIER
2136 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2139 /* A nonempty list of identifiers, including typenames. */
2140 identifiers_or_typenames:
2142 { $$ = build_tree_list (NULL_TREE, $1); }
2143 | identifiers_or_typenames ',' identifier
2144 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2149 { $$ = SAVE_WARN_FLAGS();
2151 warn_pointer_arith = 0; }
2155 /* Objective-C productions. */
2165 if (objc_implementation_context)
2167 finish_class (objc_implementation_context);
2168 objc_ivar_chain = NULL_TREE;
2169 objc_implementation_context = NULL_TREE;
2172 warning ("`@end' must appear in an implementation context");
2176 /* A nonempty list of identifiers. */
2179 { $$ = build_tree_list (NULL_TREE, $1); }
2180 | identifier_list ',' identifier
2181 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2185 CLASS identifier_list ';'
2187 objc_declare_class ($2);
2191 ALIAS identifier identifier ';'
2193 objc_declare_alias ($2, $3);
2197 INTERFACE identifier protocolrefs '{'
2199 objc_interface_context = objc_ivar_context
2200 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2201 objc_public_flag = 0;
2205 continue_class (objc_interface_context);
2210 finish_class (objc_interface_context);
2211 objc_interface_context = NULL_TREE;
2214 | INTERFACE identifier protocolrefs
2216 objc_interface_context
2217 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2218 continue_class (objc_interface_context);
2223 finish_class (objc_interface_context);
2224 objc_interface_context = NULL_TREE;
2227 | INTERFACE identifier ':' identifier protocolrefs '{'
2229 objc_interface_context = objc_ivar_context
2230 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2231 objc_public_flag = 0;
2235 continue_class (objc_interface_context);
2240 finish_class (objc_interface_context);
2241 objc_interface_context = NULL_TREE;
2244 | INTERFACE identifier ':' identifier protocolrefs
2246 objc_interface_context
2247 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2248 continue_class (objc_interface_context);
2253 finish_class (objc_interface_context);
2254 objc_interface_context = NULL_TREE;
2257 | IMPLEMENTATION identifier '{'
2259 objc_implementation_context = objc_ivar_context
2260 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2261 objc_public_flag = 0;
2266 = continue_class (objc_implementation_context);
2269 | IMPLEMENTATION identifier
2271 objc_implementation_context
2272 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2274 = continue_class (objc_implementation_context);
2277 | IMPLEMENTATION identifier ':' identifier '{'
2279 objc_implementation_context = objc_ivar_context
2280 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2281 objc_public_flag = 0;
2286 = continue_class (objc_implementation_context);
2289 | IMPLEMENTATION identifier ':' identifier
2291 objc_implementation_context
2292 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2294 = continue_class (objc_implementation_context);
2297 | INTERFACE identifier '(' identifier ')' protocolrefs
2299 objc_interface_context
2300 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2301 continue_class (objc_interface_context);
2306 finish_class (objc_interface_context);
2307 objc_interface_context = NULL_TREE;
2310 | IMPLEMENTATION identifier '(' identifier ')'
2312 objc_implementation_context
2313 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2315 = continue_class (objc_implementation_context);
2320 PROTOCOL identifier protocolrefs
2322 remember_protocol_qualifiers ();
2323 objc_interface_context
2324 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2328 forget_protocol_qualifiers();
2329 finish_protocol(objc_interface_context);
2330 objc_interface_context = NULL_TREE;
2339 | non_empty_protocolrefs
2342 non_empty_protocolrefs:
2343 ARITHCOMPARE identifier_list ARITHCOMPARE
2345 if ($1 == LT_EXPR && $3 == GT_EXPR)
2353 ivar_decl_list visibility_spec ivar_decls
2358 PRIVATE { objc_public_flag = 2; }
2359 | PROTECTED { objc_public_flag = 0; }
2360 | PUBLIC { objc_public_flag = 1; }
2368 | ivar_decls ivar_decl ';'
2372 pedwarn ("extra semicolon in struct or union specified");
2377 /* There is a shift-reduce conflict here, because `components' may
2378 start with a `typename'. It happens that shifting (the default resolution)
2379 does the right thing, because it treats the `typename' as part of
2380 a `typed_typespecs'.
2382 It is possible that this same technique would allow the distinction
2383 between `notype_initdecls' and `initdecls' to be eliminated.
2384 But I am being cautious and not trying it. */
2387 typed_typespecs setspecs ivars
2389 current_declspecs = TREE_VALUE (declspec_stack);
2390 prefix_attributes = TREE_PURPOSE (declspec_stack);
2391 declspec_stack = TREE_CHAIN (declspec_stack); }
2392 | nonempty_type_quals setspecs ivars
2394 current_declspecs = TREE_VALUE (declspec_stack);
2395 prefix_attributes = TREE_PURPOSE (declspec_stack);
2396 declspec_stack = TREE_CHAIN (declspec_stack); }
2405 | ivars ',' ivar_declarator
2411 $$ = add_instance_variable (objc_ivar_context,
2413 $1, current_declspecs,
2416 | declarator ':' expr_no_commas
2418 $$ = add_instance_variable (objc_ivar_context,
2420 $1, current_declspecs, $3);
2422 | ':' expr_no_commas
2424 $$ = add_instance_variable (objc_ivar_context,
2427 current_declspecs, $2);
2434 remember_protocol_qualifiers ();
2435 if (objc_implementation_context)
2436 objc_inherit_code = CLASS_METHOD_DECL;
2438 fatal ("method definition not in class context");
2442 forget_protocol_qualifiers ();
2443 add_class_method (objc_implementation_context, $3);
2444 start_method_def ($3);
2445 objc_method_context = $3;
2449 continue_method_def ();
2453 finish_method_def ();
2454 objc_method_context = NULL_TREE;
2459 remember_protocol_qualifiers ();
2460 if (objc_implementation_context)
2461 objc_inherit_code = INSTANCE_METHOD_DECL;
2463 fatal ("method definition not in class context");
2467 forget_protocol_qualifiers ();
2468 add_instance_method (objc_implementation_context, $3);
2469 start_method_def ($3);
2470 objc_method_context = $3;
2474 continue_method_def ();
2478 finish_method_def ();
2479 objc_method_context = NULL_TREE;
2483 /* the reason for the strange actions in this rule
2484 is so that notype_initdecls when reached via datadef
2485 can find a valid list of type and sc specs in $0. */
2489 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2492 methodprotolist2: /* eliminates a shift/reduce conflict */
2495 | methodprotolist2 methodproto
2496 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2507 /* Remember protocol qualifiers in prototypes. */
2508 remember_protocol_qualifiers ();
2509 objc_inherit_code = CLASS_METHOD_DECL;
2513 /* Forget protocol qualifiers here. */
2514 forget_protocol_qualifiers ();
2515 add_class_method (objc_interface_context, $3);
2521 /* Remember protocol qualifiers in prototypes. */
2522 remember_protocol_qualifiers ();
2523 objc_inherit_code = INSTANCE_METHOD_DECL;
2527 /* Forget protocol qualifiers here. */
2528 forget_protocol_qualifiers ();
2529 add_instance_method (objc_interface_context, $3);
2535 '(' typename ')' unaryselector
2537 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2542 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2545 | '(' typename ')' keywordselector optparmlist
2547 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2550 | keywordselector optparmlist
2552 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2556 /* "optarglist" assumes that start_method_def has already been called...
2557 if it is not, the "xdecls" will not be placed in the proper scope */
2564 /* to get around the following situation: "int foo (int a) int b; {}" that
2565 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
2580 typed_declspecs setspecs myparms ';'
2581 { current_declspecs = TREE_VALUE (declspec_stack);
2582 prefix_attributes = TREE_PURPOSE (declspec_stack);
2583 declspec_stack = TREE_CHAIN (declspec_stack); }
2584 | typed_declspecs ';'
2585 { shadow_tag ($1); }
2587 { pedwarn ("empty declaration"); }
2592 { push_parm_decl ($1); }
2593 | myparms ',' myparm
2594 { push_parm_decl ($3); }
2597 /* A single parameter declaration or parameter type name,
2598 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
2601 parm_declarator maybe_attribute
2602 { $$ = build_tree_list (build_tree_list (current_declspecs,
2604 build_tree_list (prefix_attributes,
2606 | notype_declarator maybe_attribute
2607 { $$ = build_tree_list (build_tree_list (current_declspecs,
2609 build_tree_list (prefix_attributes,
2611 | absdcl maybe_attribute
2612 { $$ = build_tree_list (build_tree_list (current_declspecs,
2614 build_tree_list (prefix_attributes,
2625 /* oh what a kludge! */
2626 $$ = objc_ellipsis_node;
2634 /* returns a tree list node generated by get_parm_info */
2647 | keywordselector keyworddecl
2649 $$ = chainon ($1, $2);
2661 ENUM { $$ = get_identifier (token_buffer); }
2662 | STRUCT { $$ = get_identifier (token_buffer); }
2663 | UNION { $$ = get_identifier (token_buffer); }
2664 | IF { $$ = get_identifier (token_buffer); }
2665 | ELSE { $$ = get_identifier (token_buffer); }
2666 | WHILE { $$ = get_identifier (token_buffer); }
2667 | DO { $$ = get_identifier (token_buffer); }
2668 | FOR { $$ = get_identifier (token_buffer); }
2669 | SWITCH { $$ = get_identifier (token_buffer); }
2670 | CASE { $$ = get_identifier (token_buffer); }
2671 | DEFAULT { $$ = get_identifier (token_buffer); }
2672 | BREAK { $$ = get_identifier (token_buffer); }
2673 | CONTINUE { $$ = get_identifier (token_buffer); }
2674 | RETURN { $$ = get_identifier (token_buffer); }
2675 | GOTO { $$ = get_identifier (token_buffer); }
2676 | ASM_KEYWORD { $$ = get_identifier (token_buffer); }
2677 | SIZEOF { $$ = get_identifier (token_buffer); }
2678 | TYPEOF { $$ = get_identifier (token_buffer); }
2679 | ALIGNOF { $$ = get_identifier (token_buffer); }
2680 | TYPESPEC | TYPE_QUAL
2684 selector ':' '(' typename ')' identifier
2686 $$ = build_keyword_decl ($1, $4, $6);
2689 | selector ':' identifier
2691 $$ = build_keyword_decl ($1, NULL_TREE, $3);
2694 | ':' '(' typename ')' identifier
2696 $$ = build_keyword_decl (NULL_TREE, $3, $5);
2701 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
2712 | keywordarglist keywordarg
2714 $$ = chainon ($1, $2);
2722 if (TREE_CHAIN ($1) == NULL_TREE)
2723 /* just return the expr., remove a level of indirection */
2724 $$ = TREE_VALUE ($1);
2726 /* we have a comma expr., we will collapse later */
2732 selector ':' keywordexpr
2734 $$ = build_tree_list ($1, $3);
2738 $$ = build_tree_list (NULL_TREE, $2);
2746 $$ = get_class_reference ($1);
2752 { objc_receiver_context = 1; }
2754 { objc_receiver_context = 0; }
2757 $$ = build_tree_list ($3, $5);
2768 | keywordnamelist keywordname
2770 $$ = chainon ($1, $2);
2777 $$ = build_tree_list ($1, NULL_TREE);
2781 $$ = build_tree_list (NULL_TREE, NULL_TREE);
2786 SELECTOR '(' selectorarg ')'
2793 PROTOCOL '(' identifier ')'
2799 /* extension to support C-structures in the archiver */
2802 ENCODE '(' typename ')'
2804 $$ = groktypename ($3);