1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 ifobjc ... end ifobjc conditionals contain code for Objective C only.
24 ifc ... end ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 31 /* shift/reduce conflicts, and 1 reduce/reduce conflict. */
35 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
53 #include "diagnostic.h"
55 #ifdef MULTIBYTE_CHARS
63 /* Like YYERROR but do call yyerror. */
64 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
66 /* Cause the "yydebug" variable to be defined. */
69 /* Rename the "yyparse" function so that we can override it elsewhere. */
70 #define yyparse yyparse_1
75 %union {long itype; tree ttype; enum tree_code code;
76 const char *filename; int lineno; }
78 /* All identifiers that are not reserved words
79 and are not declared typedefs in the current block */
82 /* All identifiers that are declared typedefs in the current block.
83 In some contexts, they are treated just like IDENTIFIER,
84 but they can also serve as typespecs in declarations. */
87 /* Reserved words that specify storage class.
88 yylval contains an IDENTIFIER_NODE which indicates which one. */
91 /* Reserved words that specify type.
92 yylval contains an IDENTIFIER_NODE which indicates which one. */
95 /* Reserved words that qualify type: "const", "volatile", or "restrict".
96 yylval contains an IDENTIFIER_NODE which indicates which one. */
99 /* Character or numeric constants.
100 yylval is the node for the constant. */
103 /* String constants in raw form.
104 yylval is a STRING_CST node. */
107 /* "...", used for functions with variable arglists. */
110 /* the reserved words */
111 /* SCO include files test "ASM", so use something else. */
112 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
113 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
114 %token ATTRIBUTE EXTENSION LABEL
115 %token REALPART IMAGPART VA_ARG
116 %token PTR_VALUE PTR_BASE PTR_EXTENT
118 /* function name can be a string const or a var decl. */
119 %token STRING_FUNC_NAME VAR_FUNC_NAME
121 /* Add precedence rules to solve dangling else s/r conflict */
125 /* Define the operator tokens and their precedences.
126 The value is an integer because, if used, it is the tree code
127 to use in the expression made from the operator. */
129 %right <code> ASSIGN '='
130 %right <code> '?' ':'
136 %left <code> EQCOMPARE
137 %left <code> ARITHCOMPARE
138 %left <code> LSHIFT RSHIFT
140 %left <code> '*' '/' '%'
141 %right <code> UNARY PLUSPLUS MINUSMINUS
143 %left <code> POINTSAT '.' '(' '['
145 /* The Objective-C keywords. These are included in C and in
146 Objective C, so that the token codes are the same in both. */
147 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
148 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
151 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
152 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
154 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
155 %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
156 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
157 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
158 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
159 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
160 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
161 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
162 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
163 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
164 %type <ttype> declspecs_ts declspecs_nots
165 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
166 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
167 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
168 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
169 %type <ttype> typespec_nonreserved_nonattr
171 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL maybe_type_qual
172 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
173 %type <ttype> init maybeasm
174 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
175 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
176 %type <ttype> any_word extension
178 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
179 %type <ttype> do_stmt_start poplevel stmt label
181 %type <ttype> c99_block_start c99_block_end
182 %type <ttype> declarator
183 %type <ttype> notype_declarator after_type_declarator
184 %type <ttype> parm_declarator
185 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
186 %type <ttype> array_declarator
188 %type <ttype> structsp_attr structsp_nonattr
189 %type <ttype> component_decl_list component_decl_list2
190 %type <ttype> component_decl components components_notype component_declarator
191 %type <ttype> component_notype_declarator
192 %type <ttype> enumlist enumerator
193 %type <ttype> struct_head union_head enum_head
194 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
195 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
196 %type <ttype> xexpr parms parm firstparm identifiers
198 %type <ttype> parmlist parmlist_1 parmlist_2
199 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
200 %type <ttype> identifiers_or_typenames
202 %type <itype> setspecs setspecs_fp
204 %type <filename> save_filename
205 %type <lineno> save_lineno
208 /* the Objective-C nonterminals */
210 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
211 %type <ttype> methoddecl unaryselector keywordselector selector
212 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
213 %type <ttype> keywordexpr keywordarglist keywordarg
214 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
215 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
216 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
218 %type <ttype> CLASSNAME OBJECTNAME
222 /* Number of statements (loosely speaking) and compound statements
224 static int stmt_count;
225 static int compstmt_count;
227 /* Input file and line number of the end of the body of last simple_if;
228 used by the stmt-rule immediately after simple_if returns. */
229 static const char *if_stmt_file;
230 static int if_stmt_line;
232 /* List of types and structure classes of the current declaration. */
233 static tree current_declspecs = NULL_TREE;
234 static tree prefix_attributes = NULL_TREE;
236 /* List of all the attributes applying to the identifier currently being
237 declared; includes prefix_attributes and possibly some more attributes
238 just after a comma. */
239 static tree all_prefix_attributes = NULL_TREE;
241 /* Stack of saved values of current_declspecs, prefix_attributes and
242 all_prefix_attributes. */
243 static tree declspec_stack;
245 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
246 should be called from the productions making use of setspecs. */
247 #define PUSH_DECLSPEC_STACK \
249 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
250 all_prefix_attributes), \
255 #define POP_DECLSPEC_STACK \
257 current_declspecs = TREE_VALUE (declspec_stack); \
258 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
259 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
260 declspec_stack = TREE_CHAIN (declspec_stack); \
263 /* For __extension__, save/restore the warning flags which are
264 controlled by __extension__. */
265 #define SAVE_WARN_FLAGS() \
266 size_int (pedantic | (warn_pointer_arith << 1))
267 #define RESTORE_WARN_FLAGS(tval) \
269 int val = tree_low_cst (tval, 0); \
270 pedantic = val & 1; \
271 warn_pointer_arith = (val >> 1) & 1; \
275 /* Objective-C specific parser/lexer information */
277 static enum tree_code objc_inherit_code;
278 static int objc_pq_context = 0, objc_public_flag = 0;
280 /* The following flag is needed to contextualize ObjC lexical analysis.
281 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
282 an identifier to an ObjC class, even if a class with that name
284 static int objc_need_raw_identifier;
285 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
289 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
292 /* Tell yyparse how to print a token's value, if yydebug is set. */
294 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
296 static void yyprint PARAMS ((FILE *, int, YYSTYPE));
297 static void yyerror PARAMS ((const char *));
298 static int yylexname PARAMS ((void));
299 static inline int _yylex PARAMS ((void));
300 static int yylex PARAMS ((void));
301 static void init_reswords PARAMS ((void));
303 /* Add GC roots for variables local to this file. */
309 ggc_add_tree_root (&declspec_stack, 1);
310 ggc_add_tree_root (¤t_declspecs, 1);
311 ggc_add_tree_root (&prefix_attributes, 1);
312 ggc_add_tree_root (&all_prefix_attributes, 1);
320 pedwarn ("ISO C forbids an empty source file");
325 /* In case there were missing closebraces,
326 get us back to the global binding level. */
327 while (! global_bindings_p ())
330 finish_fname_decls ();
336 /* the reason for the strange actions in this rule
337 is so that notype_initdecls when reached via datadef
338 can find a valid list of type and sc specs in $0. */
341 {$<ttype>$ = NULL_TREE; } extdef
342 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
351 | ASM_KEYWORD '(' expr ')' ';'
353 if ((TREE_CODE ($3) == ADDR_EXPR
354 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
355 || TREE_CODE ($3) == STRING_CST)
358 error ("argument of `asm' is not a constant string"); }
360 { RESTORE_WARN_FLAGS ($1); }
364 setspecs notype_initdecls ';'
366 error ("ISO C forbids data definition with no type or storage class");
367 else if (!flag_traditional)
368 warning ("data definition has no type or storage class");
370 POP_DECLSPEC_STACK; }
371 | declspecs_nots setspecs notype_initdecls ';'
372 { POP_DECLSPEC_STACK; }
373 | declspecs_ts setspecs initdecls ';'
374 { POP_DECLSPEC_STACK; }
381 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
385 declspecs_ts setspecs declarator
386 { if (! start_function (current_declspecs, $3,
387 all_prefix_attributes))
391 { store_parm_decls (); }
392 save_filename save_lineno compstmt_or_error
393 { DECL_SOURCE_FILE (current_function_decl) = $7;
394 DECL_SOURCE_LINE (current_function_decl) = $8;
396 POP_DECLSPEC_STACK; }
397 | declspecs_ts setspecs declarator error
398 { POP_DECLSPEC_STACK; }
399 | declspecs_nots setspecs notype_declarator
400 { if (! start_function (current_declspecs, $3,
401 all_prefix_attributes))
405 { store_parm_decls (); }
406 save_filename save_lineno compstmt_or_error
407 { DECL_SOURCE_FILE (current_function_decl) = $7;
408 DECL_SOURCE_LINE (current_function_decl) = $8;
410 POP_DECLSPEC_STACK; }
411 | declspecs_nots setspecs notype_declarator error
412 { POP_DECLSPEC_STACK; }
413 | setspecs notype_declarator
414 { if (! start_function (NULL_TREE, $2,
415 all_prefix_attributes))
419 { store_parm_decls (); }
420 save_filename save_lineno compstmt_or_error
421 { DECL_SOURCE_FILE (current_function_decl) = $6;
422 DECL_SOURCE_LINE (current_function_decl) = $7;
424 POP_DECLSPEC_STACK; }
425 | setspecs notype_declarator error
426 { POP_DECLSPEC_STACK; }
441 { $$ = NEGATE_EXPR; }
445 if (warn_traditional && !in_system_header)
446 warning ("traditional C rejects the unary plus operator");
450 { $$ = PREINCREMENT_EXPR; }
452 { $$ = PREDECREMENT_EXPR; }
454 { $$ = BIT_NOT_EXPR; }
456 { $$ = TRUTH_NOT_EXPR; }
459 expr: nonnull_exprlist
460 { $$ = build_compound_expr ($1); }
471 { $$ = build_tree_list (NULL_TREE, $1); }
472 | nonnull_exprlist ',' expr_no_commas
473 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
478 | '*' cast_expr %prec UNARY
479 { $$ = build_indirect_ref ($2, "unary *"); }
480 /* __extension__ turns off -pedantic for following primary. */
481 | extension cast_expr %prec UNARY
483 RESTORE_WARN_FLAGS ($1); }
484 | unop cast_expr %prec UNARY
485 { $$ = build_unary_op ($1, $2, 0);
486 overflow_warning ($$); }
487 /* Refer to the address of a label as a pointer. */
489 { $$ = finish_label_address_expr ($2); }
490 /* This seems to be impossible on some machines, so let's turn it off.
491 You can use __builtin_next_arg to find the anonymous stack args.
493 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
494 $$ = error_mark_node;
495 if (TREE_VALUE (tree_last (types)) == void_type_node)
496 error ("`&...' used in function with fixed number of arguments");
500 pedwarn ("ISO C forbids `&...'");
501 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
502 $$ = build_unary_op (ADDR_EXPR, $$, 0);
505 | sizeof unary_expr %prec UNARY
507 if (TREE_CODE ($2) == COMPONENT_REF
508 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
509 error ("`sizeof' applied to a bit-field");
510 $$ = c_sizeof (TREE_TYPE ($2)); }
511 | sizeof '(' typename ')' %prec HYPERUNARY
513 $$ = c_sizeof (groktypename ($3)); }
514 | alignof unary_expr %prec UNARY
516 $$ = c_alignof_expr ($2); }
517 | alignof '(' typename ')' %prec HYPERUNARY
519 $$ = c_alignof (groktypename ($3)); }
520 | REALPART cast_expr %prec UNARY
521 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
522 | IMAGPART cast_expr %prec UNARY
523 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
527 SIZEOF { skip_evaluation++; }
531 ALIGNOF { skip_evaluation++; }
536 | '(' typename ')' cast_expr %prec UNARY
537 { $$ = c_cast_expr ($2, $4); }
542 | expr_no_commas '+' expr_no_commas
543 { $$ = parser_build_binary_op ($2, $1, $3); }
544 | expr_no_commas '-' expr_no_commas
545 { $$ = parser_build_binary_op ($2, $1, $3); }
546 | expr_no_commas '*' expr_no_commas
547 { $$ = parser_build_binary_op ($2, $1, $3); }
548 | expr_no_commas '/' expr_no_commas
549 { $$ = parser_build_binary_op ($2, $1, $3); }
550 | expr_no_commas '%' expr_no_commas
551 { $$ = parser_build_binary_op ($2, $1, $3); }
552 | expr_no_commas LSHIFT expr_no_commas
553 { $$ = parser_build_binary_op ($2, $1, $3); }
554 | expr_no_commas RSHIFT expr_no_commas
555 { $$ = parser_build_binary_op ($2, $1, $3); }
556 | expr_no_commas ARITHCOMPARE expr_no_commas
557 { $$ = parser_build_binary_op ($2, $1, $3); }
558 | expr_no_commas EQCOMPARE expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas '&' expr_no_commas
561 { $$ = parser_build_binary_op ($2, $1, $3); }
562 | expr_no_commas '|' expr_no_commas
563 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas '^' expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas ANDAND
567 { $1 = truthvalue_conversion (default_conversion ($1));
568 skip_evaluation += $1 == boolean_false_node; }
570 { skip_evaluation -= $1 == boolean_false_node;
571 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
572 | expr_no_commas OROR
573 { $1 = truthvalue_conversion (default_conversion ($1));
574 skip_evaluation += $1 == boolean_true_node; }
576 { skip_evaluation -= $1 == boolean_true_node;
577 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
579 { $1 = truthvalue_conversion (default_conversion ($1));
580 skip_evaluation += $1 == boolean_false_node; }
582 { skip_evaluation += (($1 == boolean_true_node)
583 - ($1 == boolean_false_node)); }
585 { skip_evaluation -= $1 == boolean_true_node;
586 $$ = build_conditional_expr ($1, $4, $7); }
589 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
590 /* Make sure first operand is calculated only once. */
591 $<ttype>2 = save_expr ($1);
592 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
593 skip_evaluation += $1 == boolean_true_node; }
595 { skip_evaluation -= $1 == boolean_true_node;
596 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
597 | expr_no_commas '=' expr_no_commas
599 $$ = build_modify_expr ($1, NOP_EXPR, $3);
600 class = TREE_CODE_CLASS (TREE_CODE ($$));
601 if (IS_EXPR_CODE_CLASS (class))
602 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
604 | expr_no_commas ASSIGN expr_no_commas
606 $$ = build_modify_expr ($1, $2, $3);
607 /* This inhibits warnings in truthvalue_conversion. */
608 class = TREE_CODE_CLASS (TREE_CODE ($$));
609 if (IS_EXPR_CODE_CLASS (class))
610 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
617 if (yychar == YYEMPTY)
619 $$ = build_external_ref ($1, yychar == '(');
623 { $$ = combine_strings ($1); }
625 { $$ = fname_decl (C_RID_CODE ($$), $$); }
626 | '(' typename ')' '{'
627 { start_init (NULL_TREE, NULL, 0);
628 $2 = groktypename ($2);
629 really_start_incremental_init ($2); }
630 initlist_maybe_comma '}' %prec UNARY
632 tree result = pop_init_level (0);
636 if (pedantic && ! flag_isoc99)
637 pedwarn ("ISO C89 forbids compound literals");
638 if (TYPE_NAME (type) != 0)
640 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
641 name = IDENTIFIER_POINTER (TYPE_NAME (type));
643 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
648 if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
650 int failure = complete_array_type (type, $$, 1);
656 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
657 if (IS_EXPR_CODE_CLASS (class))
658 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
661 { $$ = error_mark_node; }
662 | compstmt_primary_start compstmt_nostart ')'
663 { tree saved_last_tree;
666 pedwarn ("ISO C forbids braced-groups within expressions");
669 saved_last_tree = COMPOUND_BODY ($1);
670 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
671 last_tree = saved_last_tree;
672 TREE_CHAIN (last_tree) = NULL_TREE;
674 last_expr_type = void_type_node;
675 $$ = build1 (STMT_EXPR, last_expr_type, $1);
676 TREE_SIDE_EFFECTS ($$) = 1;
678 | compstmt_primary_start error ')'
681 last_tree = COMPOUND_BODY ($1);
682 TREE_CHAIN (last_tree) = NULL_TREE;
683 $$ = error_mark_node;
685 | primary '(' exprlist ')' %prec '.'
686 { $$ = build_function_call ($1, $3); }
687 | VA_ARG '(' expr_no_commas ',' typename ')'
688 { $$ = build_va_arg ($3, groktypename ($5)); }
689 | primary '[' expr ']' %prec '.'
690 { $$ = build_array_ref ($1, $3); }
691 | primary '.' identifier
694 if (!is_public ($1, $3))
695 $$ = error_mark_node;
698 $$ = build_component_ref ($1, $3);
700 | primary POINTSAT identifier
702 tree expr = build_indirect_ref ($1, "->");
705 if (!is_public (expr, $3))
706 $$ = error_mark_node;
709 $$ = build_component_ref (expr, $3);
712 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
714 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
717 { $$ = build_message_expr ($1); }
719 { $$ = build_selector_expr ($1); }
721 { $$ = build_protocol_expr ($1); }
723 { $$ = build_encode_expr ($1); }
725 { $$ = build_objc_string_object ($1); }
729 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
735 static int last_lineno = 0;
736 static const char *last_input_filename = 0;
738 $$ = chainon ($1, $2);
740 if (warn_traditional && !in_system_header
741 && (lineno != last_lineno || !last_input_filename ||
742 strcmp (last_input_filename, input_filename)))
744 warning ("traditional C rejects string concatenation");
745 last_lineno = lineno;
746 last_input_filename = input_filename;
753 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
754 onto it, which is to be read as an ObjC string object. */
758 | objc_string '@' STRING
759 { $$ = chainon ($1, $3); }
763 old_style_parm_decls:
767 /* ... is used here to indicate a varargs function. */
770 pedwarn ("ISO C does not permit use of `varargs.h'"); }
773 /* The following are analogous to lineno_decl, decls and decl
774 except that they do not allow nested functions.
775 They are used for old-style parm decls. */
777 save_filename save_lineno datadecl
784 | datadecls lineno_datadecl
785 | lineno_datadecl errstmt
788 /* We don't allow prefix attributes here because they cause reduce/reduce
789 conflicts: we can't know whether we're parsing a function decl with
790 attribute suffix, or function defn with attribute prefix on first old
793 declspecs_ts_nosa setspecs initdecls ';'
794 { POP_DECLSPEC_STACK; }
795 | declspecs_nots_nosa setspecs notype_initdecls ';'
796 { POP_DECLSPEC_STACK; }
797 | declspecs_ts_nosa ';'
798 { shadow_tag_warned ($1, 1);
799 pedwarn ("empty declaration"); }
800 | declspecs_nots_nosa ';'
801 { pedwarn ("empty declaration"); }
804 /* This combination which saves a lineno before a decl
805 is the normal thing to use, rather than decl itself.
806 This is to avoid shift/reduce conflicts in contexts
807 where statement labels are allowed. */
809 save_filename save_lineno decl
813 /* records the type and storage class specs to use for processing
814 the declarators that follow.
815 Maintains a stack of outer-level values of current_declspecs,
816 for the sake of parm declarations nested in function declarators. */
817 setspecs: /* empty */
818 { pending_xref_error ();
820 split_specs_attrs ($<ttype>0,
821 ¤t_declspecs, &prefix_attributes);
822 all_prefix_attributes = prefix_attributes; }
825 /* Possibly attributes after a comma, which should reset all_prefix_attributes
826 to prefix_attributes with these ones chained on the front. */
829 { all_prefix_attributes = chainon ($1, prefix_attributes); }
833 declspecs_ts setspecs initdecls ';'
834 { POP_DECLSPEC_STACK; }
835 | declspecs_nots setspecs notype_initdecls ';'
836 { POP_DECLSPEC_STACK; }
837 | declspecs_ts setspecs nested_function
838 { POP_DECLSPEC_STACK; }
839 | declspecs_nots setspecs notype_nested_function
840 { POP_DECLSPEC_STACK; }
844 { RESTORE_WARN_FLAGS ($1); }
847 /* A list of declaration specifiers. These are:
849 - Storage class specifiers (SCSPEC), which for GCC currently include
850 function specifiers ("inline").
852 - Type specifiers (typespec_*).
854 - Type qualifiers (TYPE_QUAL).
856 - Attribute specifier lists (attributes).
858 These are stored as a TREE_LIST; the head of the list is the last
859 item in the specifier list. Each entry in the list has either a
860 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
861 is a single other specifier or qualifier; and a TREE_CHAIN that is the
862 rest of the list. TREE_STATIC is set on the list if something other
863 than a storage class specifier or attribute has been seen; this is used
864 to warn for the obsolescent usage of storage class specifiers other than
865 at the start of the list. (Doing this properly would require function
866 specifiers to be handled separately from storage class specifiers.)
868 The various cases below are classified according to:
870 (a) Whether a storage class specifier is included or not; some
871 places in the grammar disallow storage class specifiers (_sc or _nosc).
873 (b) Whether a type specifier has been seen; after a type specifier,
874 a typedef name is an identifier to redeclare (_ts or _nots).
876 (c) Whether the list starts with an attribute; in certain places,
877 the grammar requires specifiers that don't start with an attribute
880 (d) Whether the list ends with an attribute (or a specifier such that
881 any following attribute would have been parsed as part of that specifier);
882 this avoids shift-reduce conflicts in the parsing of attributes
887 (i) Distinguish between function specifiers and storage class specifiers,
888 at least for the purpose of warnings about obsolescent usage.
890 (ii) Halve the number of productions here by eliminating the _sc/_nosc
891 distinction and instead checking where required that storage class
892 specifiers aren't present. */
894 /* Declspecs which contain at least one type specifier or typedef name.
895 (Just `const' or `volatile' is not enough.)
896 A typedef'd name following these is taken as a name to be declared.
897 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
899 declspecs_nosc_nots_nosa_noea:
901 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
902 TREE_STATIC ($$) = 1; }
903 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
904 { $$ = tree_cons (NULL_TREE, $2, $1);
905 TREE_STATIC ($$) = 1; }
906 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
907 { $$ = tree_cons (NULL_TREE, $2, $1);
908 TREE_STATIC ($$) = 1; }
911 declspecs_nosc_nots_nosa_ea:
912 declspecs_nosc_nots_nosa_noea attributes
913 { $$ = tree_cons ($2, NULL_TREE, $1);
914 TREE_STATIC ($$) = TREE_STATIC ($1); }
917 declspecs_nosc_nots_sa_noea:
918 declspecs_nosc_nots_sa_noea TYPE_QUAL
919 { $$ = tree_cons (NULL_TREE, $2, $1);
920 TREE_STATIC ($$) = 1; }
921 | declspecs_nosc_nots_sa_ea TYPE_QUAL
922 { $$ = tree_cons (NULL_TREE, $2, $1);
923 TREE_STATIC ($$) = 1; }
926 declspecs_nosc_nots_sa_ea:
928 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
929 TREE_STATIC ($$) = 0; }
930 | declspecs_nosc_nots_sa_noea attributes
931 { $$ = tree_cons ($2, NULL_TREE, $1);
932 TREE_STATIC ($$) = TREE_STATIC ($1); }
935 declspecs_nosc_ts_nosa_noea:
937 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
938 TREE_STATIC ($$) = 1; }
939 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
940 { $$ = tree_cons (NULL_TREE, $2, $1);
941 TREE_STATIC ($$) = 1; }
942 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
943 { $$ = tree_cons (NULL_TREE, $2, $1);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_nots_nosa_noea typespec_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_nots_nosa_ea typespec_nonattr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
959 declspecs_nosc_ts_nosa_ea:
961 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
962 TREE_STATIC ($$) = 1; }
963 | declspecs_nosc_ts_nosa_noea attributes
964 { $$ = tree_cons ($2, NULL_TREE, $1);
965 TREE_STATIC ($$) = TREE_STATIC ($1); }
966 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
967 { $$ = tree_cons (NULL_TREE, $2, $1);
968 TREE_STATIC ($$) = 1; }
969 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
970 { $$ = tree_cons (NULL_TREE, $2, $1);
971 TREE_STATIC ($$) = 1; }
972 | declspecs_nosc_nots_nosa_noea typespec_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_nots_nosa_ea typespec_attr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
980 declspecs_nosc_ts_sa_noea:
981 declspecs_nosc_ts_sa_noea TYPE_QUAL
982 { $$ = tree_cons (NULL_TREE, $2, $1);
983 TREE_STATIC ($$) = 1; }
984 | declspecs_nosc_ts_sa_ea TYPE_QUAL
985 { $$ = tree_cons (NULL_TREE, $2, $1);
986 TREE_STATIC ($$) = 1; }
987 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_nots_sa_noea typespec_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_nots_sa_ea typespec_nonattr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
1001 declspecs_nosc_ts_sa_ea:
1002 declspecs_nosc_ts_sa_noea attributes
1003 { $$ = tree_cons ($2, NULL_TREE, $1);
1004 TREE_STATIC ($$) = TREE_STATIC ($1); }
1005 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1006 { $$ = tree_cons (NULL_TREE, $2, $1);
1007 TREE_STATIC ($$) = 1; }
1008 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1009 { $$ = tree_cons (NULL_TREE, $2, $1);
1010 TREE_STATIC ($$) = 1; }
1011 | declspecs_nosc_nots_sa_noea typespec_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1014 | declspecs_nosc_nots_sa_ea typespec_attr
1015 { $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = 1; }
1019 declspecs_sc_nots_nosa_noea:
1021 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1022 TREE_STATIC ($$) = 0; }
1023 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1024 { $$ = tree_cons (NULL_TREE, $2, $1);
1025 TREE_STATIC ($$) = 1; }
1026 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1027 { $$ = tree_cons (NULL_TREE, $2, $1);
1028 TREE_STATIC ($$) = 1; }
1029 | declspecs_nosc_nots_nosa_noea SCSPEC
1030 { if (extra_warnings && TREE_STATIC ($1))
1031 warning ("`%s' is not at beginning of declaration",
1032 IDENTIFIER_POINTER ($2));
1033 $$ = tree_cons (NULL_TREE, $2, $1);
1034 TREE_STATIC ($$) = TREE_STATIC ($1); }
1035 | declspecs_nosc_nots_nosa_ea SCSPEC
1036 { if (extra_warnings && TREE_STATIC ($1))
1037 warning ("`%s' is not at beginning of declaration",
1038 IDENTIFIER_POINTER ($2));
1039 $$ = tree_cons (NULL_TREE, $2, $1);
1040 TREE_STATIC ($$) = TREE_STATIC ($1); }
1041 | declspecs_sc_nots_nosa_noea SCSPEC
1042 { if (extra_warnings && TREE_STATIC ($1))
1043 warning ("`%s' is not at beginning of declaration",
1044 IDENTIFIER_POINTER ($2));
1045 $$ = tree_cons (NULL_TREE, $2, $1);
1046 TREE_STATIC ($$) = TREE_STATIC ($1); }
1047 | declspecs_sc_nots_nosa_ea SCSPEC
1048 { if (extra_warnings && TREE_STATIC ($1))
1049 warning ("`%s' is not at beginning of declaration",
1050 IDENTIFIER_POINTER ($2));
1051 $$ = tree_cons (NULL_TREE, $2, $1);
1052 TREE_STATIC ($$) = TREE_STATIC ($1); }
1055 declspecs_sc_nots_nosa_ea:
1056 declspecs_sc_nots_nosa_noea attributes
1057 { $$ = tree_cons ($2, NULL_TREE, $1);
1058 TREE_STATIC ($$) = TREE_STATIC ($1); }
1061 declspecs_sc_nots_sa_noea:
1062 declspecs_sc_nots_sa_noea TYPE_QUAL
1063 { $$ = tree_cons (NULL_TREE, $2, $1);
1064 TREE_STATIC ($$) = 1; }
1065 | declspecs_sc_nots_sa_ea TYPE_QUAL
1066 { $$ = tree_cons (NULL_TREE, $2, $1);
1067 TREE_STATIC ($$) = 1; }
1068 | declspecs_nosc_nots_sa_noea SCSPEC
1069 { if (extra_warnings && TREE_STATIC ($1))
1070 warning ("`%s' is not at beginning of declaration",
1071 IDENTIFIER_POINTER ($2));
1072 $$ = tree_cons (NULL_TREE, $2, $1);
1073 TREE_STATIC ($$) = TREE_STATIC ($1); }
1074 | declspecs_nosc_nots_sa_ea SCSPEC
1075 { if (extra_warnings && TREE_STATIC ($1))
1076 warning ("`%s' is not at beginning of declaration",
1077 IDENTIFIER_POINTER ($2));
1078 $$ = tree_cons (NULL_TREE, $2, $1);
1079 TREE_STATIC ($$) = TREE_STATIC ($1); }
1080 | declspecs_sc_nots_sa_noea SCSPEC
1081 { if (extra_warnings && TREE_STATIC ($1))
1082 warning ("`%s' is not at beginning of declaration",
1083 IDENTIFIER_POINTER ($2));
1084 $$ = tree_cons (NULL_TREE, $2, $1);
1085 TREE_STATIC ($$) = TREE_STATIC ($1); }
1086 | declspecs_sc_nots_sa_ea SCSPEC
1087 { if (extra_warnings && TREE_STATIC ($1))
1088 warning ("`%s' is not at beginning of declaration",
1089 IDENTIFIER_POINTER ($2));
1090 $$ = tree_cons (NULL_TREE, $2, $1);
1091 TREE_STATIC ($$) = TREE_STATIC ($1); }
1094 declspecs_sc_nots_sa_ea:
1095 declspecs_sc_nots_sa_noea attributes
1096 { $$ = tree_cons ($2, NULL_TREE, $1);
1097 TREE_STATIC ($$) = TREE_STATIC ($1); }
1100 declspecs_sc_ts_nosa_noea:
1101 declspecs_sc_ts_nosa_noea TYPE_QUAL
1102 { $$ = tree_cons (NULL_TREE, $2, $1);
1103 TREE_STATIC ($$) = 1; }
1104 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1105 { $$ = tree_cons (NULL_TREE, $2, $1);
1106 TREE_STATIC ($$) = 1; }
1107 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_nots_nosa_noea typespec_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_sc_nots_nosa_ea typespec_nonattr
1117 { $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = 1; }
1119 | declspecs_nosc_ts_nosa_noea SCSPEC
1120 { if (extra_warnings && TREE_STATIC ($1))
1121 warning ("`%s' is not at beginning of declaration",
1122 IDENTIFIER_POINTER ($2));
1123 $$ = tree_cons (NULL_TREE, $2, $1);
1124 TREE_STATIC ($$) = TREE_STATIC ($1); }
1125 | declspecs_nosc_ts_nosa_ea SCSPEC
1126 { if (extra_warnings && TREE_STATIC ($1))
1127 warning ("`%s' is not at beginning of declaration",
1128 IDENTIFIER_POINTER ($2));
1129 $$ = tree_cons (NULL_TREE, $2, $1);
1130 TREE_STATIC ($$) = TREE_STATIC ($1); }
1131 | declspecs_sc_ts_nosa_noea SCSPEC
1132 { if (extra_warnings && TREE_STATIC ($1))
1133 warning ("`%s' is not at beginning of declaration",
1134 IDENTIFIER_POINTER ($2));
1135 $$ = tree_cons (NULL_TREE, $2, $1);
1136 TREE_STATIC ($$) = TREE_STATIC ($1); }
1137 | declspecs_sc_ts_nosa_ea SCSPEC
1138 { if (extra_warnings && TREE_STATIC ($1))
1139 warning ("`%s' is not at beginning of declaration",
1140 IDENTIFIER_POINTER ($2));
1141 $$ = tree_cons (NULL_TREE, $2, $1);
1142 TREE_STATIC ($$) = TREE_STATIC ($1); }
1145 declspecs_sc_ts_nosa_ea:
1146 declspecs_sc_ts_nosa_noea attributes
1147 { $$ = tree_cons ($2, NULL_TREE, $1);
1148 TREE_STATIC ($$) = TREE_STATIC ($1); }
1149 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1150 { $$ = tree_cons (NULL_TREE, $2, $1);
1151 TREE_STATIC ($$) = 1; }
1152 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1153 { $$ = tree_cons (NULL_TREE, $2, $1);
1154 TREE_STATIC ($$) = 1; }
1155 | declspecs_sc_nots_nosa_noea typespec_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_nots_nosa_ea typespec_attr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1163 declspecs_sc_ts_sa_noea:
1164 declspecs_sc_ts_sa_noea TYPE_QUAL
1165 { $$ = tree_cons (NULL_TREE, $2, $1);
1166 TREE_STATIC ($$) = 1; }
1167 | declspecs_sc_ts_sa_ea TYPE_QUAL
1168 { $$ = tree_cons (NULL_TREE, $2, $1);
1169 TREE_STATIC ($$) = 1; }
1170 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_nots_sa_noea typespec_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_sc_nots_sa_ea typespec_nonattr
1180 { $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = 1; }
1182 | declspecs_nosc_ts_sa_noea SCSPEC
1183 { if (extra_warnings && TREE_STATIC ($1))
1184 warning ("`%s' is not at beginning of declaration",
1185 IDENTIFIER_POINTER ($2));
1186 $$ = tree_cons (NULL_TREE, $2, $1);
1187 TREE_STATIC ($$) = TREE_STATIC ($1); }
1188 | declspecs_nosc_ts_sa_ea SCSPEC
1189 { if (extra_warnings && TREE_STATIC ($1))
1190 warning ("`%s' is not at beginning of declaration",
1191 IDENTIFIER_POINTER ($2));
1192 $$ = tree_cons (NULL_TREE, $2, $1);
1193 TREE_STATIC ($$) = TREE_STATIC ($1); }
1194 | declspecs_sc_ts_sa_noea SCSPEC
1195 { if (extra_warnings && TREE_STATIC ($1))
1196 warning ("`%s' is not at beginning of declaration",
1197 IDENTIFIER_POINTER ($2));
1198 $$ = tree_cons (NULL_TREE, $2, $1);
1199 TREE_STATIC ($$) = TREE_STATIC ($1); }
1200 | declspecs_sc_ts_sa_ea SCSPEC
1201 { if (extra_warnings && TREE_STATIC ($1))
1202 warning ("`%s' is not at beginning of declaration",
1203 IDENTIFIER_POINTER ($2));
1204 $$ = tree_cons (NULL_TREE, $2, $1);
1205 TREE_STATIC ($$) = TREE_STATIC ($1); }
1208 declspecs_sc_ts_sa_ea:
1209 declspecs_sc_ts_sa_noea attributes
1210 { $$ = tree_cons ($2, NULL_TREE, $1);
1211 TREE_STATIC ($$) = TREE_STATIC ($1); }
1212 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1213 { $$ = tree_cons (NULL_TREE, $2, $1);
1214 TREE_STATIC ($$) = 1; }
1215 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1216 { $$ = tree_cons (NULL_TREE, $2, $1);
1217 TREE_STATIC ($$) = 1; }
1218 | declspecs_sc_nots_sa_noea typespec_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1221 | declspecs_sc_nots_sa_ea typespec_attr
1222 { $$ = tree_cons (NULL_TREE, $2, $1);
1223 TREE_STATIC ($$) = 1; }
1226 /* Particular useful classes of declspecs. */
1228 declspecs_nosc_ts_nosa_noea
1229 | declspecs_nosc_ts_nosa_ea
1230 | declspecs_nosc_ts_sa_noea
1231 | declspecs_nosc_ts_sa_ea
1232 | declspecs_sc_ts_nosa_noea
1233 | declspecs_sc_ts_nosa_ea
1234 | declspecs_sc_ts_sa_noea
1235 | declspecs_sc_ts_sa_ea
1239 declspecs_nosc_nots_nosa_noea
1240 | declspecs_nosc_nots_nosa_ea
1241 | declspecs_nosc_nots_sa_noea
1242 | declspecs_nosc_nots_sa_ea
1243 | declspecs_sc_nots_nosa_noea
1244 | declspecs_sc_nots_nosa_ea
1245 | declspecs_sc_nots_sa_noea
1246 | declspecs_sc_nots_sa_ea
1250 declspecs_nosc_ts_nosa_noea
1251 | declspecs_nosc_ts_nosa_ea
1252 | declspecs_sc_ts_nosa_noea
1253 | declspecs_sc_ts_nosa_ea
1256 declspecs_nots_nosa:
1257 declspecs_nosc_nots_nosa_noea
1258 | declspecs_nosc_nots_nosa_ea
1259 | declspecs_sc_nots_nosa_noea
1260 | declspecs_sc_nots_nosa_ea
1264 declspecs_nosc_ts_nosa_noea
1265 | declspecs_nosc_ts_nosa_ea
1266 | declspecs_nosc_ts_sa_noea
1267 | declspecs_nosc_ts_sa_ea
1270 declspecs_nosc_nots:
1271 declspecs_nosc_nots_nosa_noea
1272 | declspecs_nosc_nots_nosa_ea
1273 | declspecs_nosc_nots_sa_noea
1274 | declspecs_nosc_nots_sa_ea
1278 declspecs_nosc_ts_nosa_noea
1279 | declspecs_nosc_ts_nosa_ea
1280 | declspecs_nosc_ts_sa_noea
1281 | declspecs_nosc_ts_sa_ea
1282 | declspecs_nosc_nots_nosa_noea
1283 | declspecs_nosc_nots_nosa_ea
1284 | declspecs_nosc_nots_sa_noea
1285 | declspecs_nosc_nots_sa_ea
1289 declspecs_nosc_nots_nosa_noea
1290 | declspecs_nosc_nots_nosa_ea
1291 | declspecs_nosc_nots_sa_noea
1292 | declspecs_nosc_nots_sa_ea
1293 | declspecs_nosc_ts_nosa_noea
1294 | declspecs_nosc_ts_nosa_ea
1295 | declspecs_nosc_ts_sa_noea
1296 | declspecs_nosc_ts_sa_ea
1297 | declspecs_sc_nots_nosa_noea
1298 | declspecs_sc_nots_nosa_ea
1299 | declspecs_sc_nots_sa_noea
1300 | declspecs_sc_nots_sa_ea
1301 | declspecs_sc_ts_nosa_noea
1302 | declspecs_sc_ts_nosa_ea
1303 | declspecs_sc_ts_sa_noea
1304 | declspecs_sc_ts_sa_ea
1307 /* A (possibly empty) sequence of type qualifiers and attributes. */
1308 maybe_type_quals_attrs:
1311 | declspecs_nosc_nots
1315 /* A type specifier (but not a type qualifier).
1316 Once we have seen one of these in a declaration,
1317 if a typedef name appears then it is being redeclared.
1319 The _reserved versions start with a reserved word and may appear anywhere
1320 in the declaration specifiers; the _nonreserved versions may only
1321 appear before any other type specifiers, and after that are (if names)
1324 FIXME: should the _nonreserved version be restricted to names being
1325 redeclared only? The other entries there relate only the GNU extensions
1326 and Objective C, and are historically parsed thus, and don't make sense
1327 after other type specifiers, but it might be cleaner to count them as
1330 _attr means: specifiers that either end with attributes,
1331 or are such that any following attributes would
1332 be parsed as part of the specifier.
1334 _nonattr: specifiers. */
1337 typespec_reserved_nonattr
1338 | typespec_nonreserved_nonattr
1342 typespec_reserved_attr
1345 typespec_reserved_nonattr:
1347 { OBJC_NEED_RAW_IDENTIFIER (1); }
1351 typespec_reserved_attr:
1355 typespec_nonreserved_nonattr:
1357 { /* For a typedef name, record the meaning, not the name.
1358 In case of `foo foo, bar;'. */
1359 $$ = lookup_name ($1); }
1361 | CLASSNAME protocolrefs
1362 { $$ = get_static_reference ($1, $2); }
1363 | OBJECTNAME protocolrefs
1364 { $$ = get_object_reference ($2); }
1366 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1367 - nisse@lysator.liu.se */
1368 | non_empty_protocolrefs
1369 { $$ = get_object_reference ($1); }
1371 | TYPEOF '(' expr ')'
1372 { $$ = TREE_TYPE ($3); }
1373 | TYPEOF '(' typename ')'
1374 { $$ = groktypename ($3); }
1377 /* typespec_nonreserved_attr does not exist. */
1381 | initdecls ',' maybe_resetattrs initdcl
1386 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1392 | ASM_KEYWORD '(' string ')'
1393 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1399 declarator maybeasm maybe_attribute '='
1400 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1401 chainon ($3, all_prefix_attributes));
1402 start_init ($<ttype>$, $2, global_bindings_p ()); }
1404 /* Note how the declaration of the variable is in effect while its init is parsed! */
1406 finish_decl ($<ttype>5, $6, $2); }
1407 | declarator maybeasm maybe_attribute
1408 { tree d = start_decl ($1, current_declspecs, 0,
1409 chainon ($3, all_prefix_attributes));
1410 finish_decl (d, NULL_TREE, $2);
1415 notype_declarator maybeasm maybe_attribute '='
1416 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1417 chainon ($3, all_prefix_attributes));
1418 start_init ($<ttype>$, $2, global_bindings_p ()); }
1420 /* Note how the declaration of the variable is in effect while its init is parsed! */
1422 finish_decl ($<ttype>5, $6, $2); }
1423 | notype_declarator maybeasm maybe_attribute
1424 { tree d = start_decl ($1, current_declspecs, 0,
1425 chainon ($3, all_prefix_attributes));
1426 finish_decl (d, NULL_TREE, $2); }
1428 /* the * rules are dummies to accept the Apollo extended syntax
1429 so that the header files compile. */
1440 | attributes attribute
1441 { $$ = chainon ($1, $2); }
1445 ATTRIBUTE '(' '(' attribute_list ')' ')'
1452 | attribute_list ',' attrib
1453 { $$ = chainon ($1, $3); }
1460 { $$ = build_tree_list ($1, NULL_TREE); }
1461 | any_word '(' IDENTIFIER ')'
1462 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1463 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1464 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1465 | any_word '(' exprlist ')'
1466 { $$ = build_tree_list ($1, $3); }
1469 /* This still leaves out most reserved keywords,
1470 shouldn't we include them? */
1479 /* Initializers. `init' is the entry point. */
1484 { really_start_incremental_init (NULL_TREE); }
1485 initlist_maybe_comma '}'
1486 { $$ = pop_init_level (0); }
1488 { $$ = error_mark_node; }
1491 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1492 initlist_maybe_comma:
1495 pedwarn ("ISO C forbids empty initializer braces"); }
1496 | initlist1 maybecomma
1501 | initlist1 ',' initelt
1504 /* `initelt' is a single element of an initializer.
1505 It may use braces. */
1507 designator_list '=' initval
1508 { if (pedantic && ! flag_isoc99)
1509 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1510 | designator initval
1512 pedwarn ("obsolete use of designated initializer without `='"); }
1514 { set_init_label ($1);
1516 pedwarn ("obsolete use of designated initializer with `:'"); }
1523 { push_init_level (0); }
1524 initlist_maybe_comma '}'
1525 { process_init_element (pop_init_level (0)); }
1527 { process_init_element ($1); }
1533 | designator_list designator
1538 { set_init_label ($2); }
1539 /* These are for labeled elements. The syntax for an array element
1540 initializer conflicts with the syntax for an Objective-C message,
1541 so don't include these productions in the Objective-C grammar. */
1543 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1544 { set_init_index ($2, $4);
1546 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1547 | '[' expr_no_commas ']'
1548 { set_init_index ($2, NULL_TREE); }
1555 pedwarn ("ISO C forbids nested functions");
1557 push_function_context ();
1558 if (! start_function (current_declspecs, $1,
1559 all_prefix_attributes))
1561 pop_function_context ();
1565 old_style_parm_decls
1566 { store_parm_decls (); }
1567 /* This used to use compstmt_or_error.
1568 That caused a bug with input `f(g) int g {}',
1569 where the use of YYERROR1 above caused an error
1570 which then was handled by compstmt_or_error.
1571 There followed a repeated execution of that same rule,
1572 which called YYERROR1 again, and so on. */
1573 save_filename save_lineno compstmt
1574 { tree decl = current_function_decl;
1575 DECL_SOURCE_FILE (decl) = $5;
1576 DECL_SOURCE_LINE (decl) = $6;
1577 finish_function (1);
1578 pop_function_context ();
1579 add_decl_stmt (decl); }
1582 notype_nested_function:
1585 pedwarn ("ISO C forbids nested functions");
1587 push_function_context ();
1588 if (! start_function (current_declspecs, $1,
1589 all_prefix_attributes))
1591 pop_function_context ();
1595 old_style_parm_decls
1596 { store_parm_decls (); }
1597 /* This used to use compstmt_or_error.
1598 That caused a bug with input `f(g) int g {}',
1599 where the use of YYERROR1 above caused an error
1600 which then was handled by compstmt_or_error.
1601 There followed a repeated execution of that same rule,
1602 which called YYERROR1 again, and so on. */
1603 save_filename save_lineno compstmt
1604 { tree decl = current_function_decl;
1605 DECL_SOURCE_FILE (decl) = $5;
1606 DECL_SOURCE_LINE (decl) = $6;
1607 finish_function (1);
1608 pop_function_context ();
1609 add_decl_stmt (decl); }
1612 /* Any kind of declarator (thus, all declarators allowed
1613 after an explicit typespec). */
1616 after_type_declarator
1620 /* A declarator that is allowed only after an explicit typespec. */
1622 after_type_declarator:
1623 '(' maybe_attribute after_type_declarator ')'
1624 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1625 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1626 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1627 /* | after_type_declarator '(' error ')' %prec '.'
1628 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1629 poplevel (0, 0, 0); } */
1630 | after_type_declarator array_declarator %prec '.'
1631 { $$ = set_array_declarator_type ($2, $1, 0); }
1632 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1633 { $$ = make_pointer_declarator ($2, $3); }
1640 /* Kinds of declarator that can appear in a parameter list
1641 in addition to notype_declarator. This is like after_type_declarator
1642 but does not allow a typedef name in parentheses as an identifier
1643 (because it would conflict with a function with that typedef as arg). */
1645 parm_declarator_starttypename
1646 | parm_declarator_nostarttypename
1649 parm_declarator_starttypename:
1650 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1651 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1652 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1653 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1654 poplevel (0, 0, 0); } */
1655 | parm_declarator_starttypename array_declarator %prec '.'
1656 { $$ = set_array_declarator_type ($2, $1, 0); }
1663 parm_declarator_nostarttypename:
1664 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1665 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1666 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1667 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1668 poplevel (0, 0, 0); } */
1669 | parm_declarator_nostarttypename array_declarator %prec '.'
1670 { $$ = set_array_declarator_type ($2, $1, 0); }
1671 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1672 { $$ = make_pointer_declarator ($2, $3); }
1673 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1674 { $$ = make_pointer_declarator ($2, $3); }
1675 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1676 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1679 /* A declarator allowed whether or not there has been
1680 an explicit typespec. These cannot redeclare a typedef-name. */
1683 notype_declarator '(' parmlist_or_identifiers %prec '.'
1684 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1685 /* | notype_declarator '(' error ')' %prec '.'
1686 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1687 poplevel (0, 0, 0); } */
1688 | '(' maybe_attribute notype_declarator ')'
1689 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1690 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1691 { $$ = make_pointer_declarator ($2, $3); }
1692 | notype_declarator array_declarator %prec '.'
1693 { $$ = set_array_declarator_type ($2, $1, 0); }
1718 /* structsp_attr: struct/union/enum specifiers that either
1719 end with attributes, or are such that any following attributes would
1720 be parsed as part of the struct/union/enum specifier.
1722 structsp_nonattr: other struct/union/enum specifiers. */
1725 struct_head identifier '{'
1726 { $$ = start_struct (RECORD_TYPE, $2);
1727 /* Start scope of tag before parsing components. */
1729 component_decl_list '}' maybe_attribute
1730 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1731 | struct_head '{' component_decl_list '}' maybe_attribute
1732 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1733 $3, chainon ($1, $5));
1735 | union_head identifier '{'
1736 { $$ = start_struct (UNION_TYPE, $2); }
1737 component_decl_list '}' maybe_attribute
1738 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1739 | union_head '{' component_decl_list '}' maybe_attribute
1740 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1741 $3, chainon ($1, $5));
1743 | enum_head identifier '{'
1744 { $$ = start_enum ($2); }
1745 enumlist maybecomma_warn '}' maybe_attribute
1746 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1747 chainon ($1, $8)); }
1749 { $$ = start_enum (NULL_TREE); }
1750 enumlist maybecomma_warn '}' maybe_attribute
1751 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1752 chainon ($1, $7)); }
1756 struct_head identifier
1757 { $$ = xref_tag (RECORD_TYPE, $2); }
1758 | union_head identifier
1759 { $$ = xref_tag (UNION_TYPE, $2); }
1760 | enum_head identifier
1761 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1762 /* In ISO C, enumerated types can be referred to
1763 only if already defined. */
1764 if (pedantic && !COMPLETE_TYPE_P ($$))
1765 pedwarn ("ISO C forbids forward references to `enum' types"); }
1776 { if (pedantic && ! flag_isoc99)
1777 pedwarn ("comma at end of enumerator list"); }
1780 component_decl_list:
1781 component_decl_list2
1783 | component_decl_list2 component_decl
1784 { $$ = chainon ($1, $2);
1785 pedwarn ("no semicolon at end of struct or union"); }
1788 component_decl_list2: /* empty */
1790 | component_decl_list2 component_decl ';'
1791 { $$ = chainon ($1, $2); }
1792 | component_decl_list2 ';'
1794 pedwarn ("extra semicolon in struct or union specified"); }
1796 /* foo(sizeof(struct{ @defs(ClassName)})); */
1797 | DEFS '(' CLASSNAME ')'
1799 tree interface = lookup_interface ($3);
1802 $$ = get_class_ivars (interface);
1805 error ("Cannot find interface declaration for `%s'",
1806 IDENTIFIER_POINTER ($3));
1814 declspecs_nosc_ts setspecs components
1816 POP_DECLSPEC_STACK; }
1817 | declspecs_nosc_ts setspecs save_filename save_lineno
1819 /* Support for unnamed structs or unions as members of
1820 structs or unions (which is [a] useful and [b] supports
1823 pedwarn ("ISO C doesn't support unnamed structs/unions");
1825 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1826 POP_DECLSPEC_STACK; }
1827 | declspecs_nosc_nots setspecs components_notype
1829 POP_DECLSPEC_STACK; }
1830 | declspecs_nosc_nots
1832 pedwarn ("ISO C forbids member declarations with no members");
1837 | extension component_decl
1839 RESTORE_WARN_FLAGS ($1); }
1843 component_declarator
1844 | components ',' maybe_resetattrs component_declarator
1845 { $$ = chainon ($1, $4); }
1849 component_notype_declarator
1850 | components_notype ',' maybe_resetattrs component_notype_declarator
1851 { $$ = chainon ($1, $4); }
1854 component_declarator:
1855 save_filename save_lineno declarator maybe_attribute
1856 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1857 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1858 | save_filename save_lineno
1859 declarator ':' expr_no_commas maybe_attribute
1860 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1861 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1862 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1863 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1864 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1867 component_notype_declarator:
1868 save_filename save_lineno notype_declarator maybe_attribute
1869 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1870 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1871 | save_filename save_lineno
1872 notype_declarator ':' expr_no_commas maybe_attribute
1873 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1874 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1875 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1876 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1877 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1880 /* We chain the enumerators in reverse order.
1881 They are put in forward order where enumlist is used.
1882 (The order used to be significant, but no longer is so.
1883 However, we still maintain the order, just to be clean.) */
1887 | enumlist ',' enumerator
1888 { if ($1 == error_mark_node)
1891 $$ = chainon ($3, $1); }
1893 { $$ = error_mark_node; }
1899 { $$ = build_enumerator ($1, NULL_TREE); }
1900 | identifier '=' expr_no_commas
1901 { $$ = build_enumerator ($1, $3); }
1906 { tree specs, attrs;
1907 pending_xref_error ();
1908 split_specs_attrs ($1, &specs, &attrs);
1909 /* We don't yet support attributes here. */
1910 if (attrs != NULL_TREE)
1911 warning ("attributes on type name ignored");
1912 $<ttype>$ = specs; }
1914 { $$ = build_tree_list ($<ttype>2, $3); }
1917 absdcl: /* an absolute declarator */
1923 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1925 { $$ = build_tree_list (build_tree_list (current_declspecs,
1927 all_prefix_attributes); }
1929 { $$ = build_tree_list (build_tree_list (current_declspecs,
1931 all_prefix_attributes); }
1932 | absdcl1_noea attributes
1933 { $$ = build_tree_list (build_tree_list (current_declspecs,
1935 chainon ($2, all_prefix_attributes)); }
1938 absdcl1: /* a nonempty absolute declarator */
1945 | '*' maybe_type_quals_attrs absdcl1_noea
1946 { $$ = make_pointer_declarator ($2, $3); }
1950 '*' maybe_type_quals_attrs
1951 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1952 | '*' maybe_type_quals_attrs absdcl1_ea
1953 { $$ = make_pointer_declarator ($2, $3); }
1957 '(' maybe_attribute absdcl1 ')'
1958 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1959 | direct_absdcl1 '(' parmlist
1960 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1961 | direct_absdcl1 array_declarator
1962 { $$ = set_array_declarator_type ($2, $1, 1); }
1964 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1966 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1969 /* The [...] part of a declarator for an array type. */
1973 { $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
1974 | '[' declspecs_nosc expr ']'
1975 { $$ = build_array_declarator ($3, $2, 0, 0); }
1977 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
1978 | '[' declspecs_nosc ']'
1979 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1981 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
1982 | '[' declspecs_nosc '*' ']'
1983 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1984 | '[' SCSPEC expr ']'
1985 { if (C_RID_CODE ($2) != RID_STATIC)
1986 error ("storage class specifier in array declarator");
1987 $$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
1988 | '[' SCSPEC declspecs_nosc expr ']'
1989 { if (C_RID_CODE ($2) != RID_STATIC)
1990 error ("storage class specifier in array declarator");
1991 $$ = build_array_declarator ($4, $3, 1, 0); }
1992 | '[' declspecs_nosc SCSPEC expr ']'
1993 { if (C_RID_CODE ($3) != RID_STATIC)
1994 error ("storage class specifier in array declarator");
1995 $$ = build_array_declarator ($4, $2, 1, 0); }
1998 /* A nonempty series of declarations and statements (possibly followed by
1999 some labels) that can form the body of a compound statement.
2000 NOTE: we don't allow labels on declarations; this might seem like a
2001 natural extension, but there would be a conflict between attributes
2002 on the label and prefix attributes on the declaration. */
2005 lineno_stmt_decl_or_labels_ending_stmt
2006 | lineno_stmt_decl_or_labels_ending_decl
2007 | lineno_stmt_decl_or_labels_ending_label
2009 pedwarn ("deprecated use of label at end of compound statement");
2011 | lineno_stmt_decl_or_labels_ending_error
2014 lineno_stmt_decl_or_labels_ending_stmt:
2016 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2017 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2018 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2019 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2022 lineno_stmt_decl_or_labels_ending_decl:
2024 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2025 { if (pedantic && !flag_isoc99)
2026 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2027 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2028 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2031 lineno_stmt_decl_or_labels_ending_label:
2033 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2034 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2035 | lineno_stmt_decl_or_labels_ending_label lineno_label
2036 | lineno_stmt_decl_or_labels_ending_error lineno_label
2039 lineno_stmt_decl_or_labels_ending_error:
2041 | lineno_stmt_decl_or_labels errstmt
2044 lineno_stmt_decl_or_labels:
2045 lineno_stmt_decl_or_labels_ending_stmt
2046 | lineno_stmt_decl_or_labels_ending_decl
2047 | lineno_stmt_decl_or_labels_ending_label
2048 | lineno_stmt_decl_or_labels_ending_error
2054 pushlevel: /* empty */
2057 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2059 if (objc_method_context)
2065 poplevel: /* empty */
2066 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2068 /* Start and end blocks created for the new scopes of C99. */
2069 c99_block_start: /* empty */
2072 $$ = c_begin_compound_stmt ();
2075 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2077 if (objc_method_context)
2086 /* Productions using c99_block_start and c99_block_end will need to do what's
2087 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2088 $1 is the value of c99_block_start and $2 of c99_block_end. */
2089 c99_block_end: /* empty */
2092 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2093 $$ = poplevel (kept_level_p (), 0, 0);
2094 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2095 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2102 /* Read zero or more forward-declarations for labels
2103 that nested functions can jump to. */
2108 pedwarn ("ISO C forbids label declarations"); }
2113 | label_decls label_decl
2117 LABEL identifiers_or_typenames ';'
2119 for (link = $2; link; link = TREE_CHAIN (link))
2121 tree label = shadow_label (TREE_VALUE (link));
2122 C_DECLARED_LABEL_FLAG (label) = 1;
2123 add_decl_stmt (label);
2128 /* This is the body of a function definition.
2129 It causes syntax errors to ignore to the next openbrace. */
2136 compstmt_start: '{' { compstmt_count++;
2137 $$ = c_begin_compound_stmt (); }
2139 compstmt_nostart: '}'
2140 { $$ = convert (void_type_node, integer_zero_node); }
2141 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2142 { $$ = poplevel (kept_level_p (), 1, 0);
2143 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2144 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2148 compstmt_contents_nonempty:
2153 compstmt_primary_start:
2155 { if (current_function_decl == 0)
2157 error ("braced-group within expression allowed only inside a function");
2160 /* We must force a BLOCK for this level
2161 so that, if it is not expanded later,
2162 there is a way to turn off the entire subtree of blocks
2163 that are contained in it. */
2165 push_label_level ();
2167 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2170 compstmt: compstmt_start compstmt_nostart
2171 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2175 /* Value is number of statements counted as of the closeparen. */
2177 if_prefix c99_block_lineno_labeled_stmt
2178 { c_finish_then (); }
2179 /* Make sure c_expand_end_cond is run once
2180 for each call to c_expand_start_cond.
2181 Otherwise a crash is likely. */
2187 { c_expand_start_cond (truthvalue_conversion ($3),
2189 $<itype>$ = stmt_count;
2190 if_stmt_file = $<filename>-2;
2191 if_stmt_line = $<lineno>-1; }
2194 /* This is a subroutine of stmt.
2195 It is used twice, once for valid DO statements
2196 and once for catching errors in parsing the end test. */
2202 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2204 /* In the event that a parse error prevents
2205 parsing the complete do-statement, set the
2206 condition now. Otherwise, we can get crashes at
2207 RTL-generation time. */
2208 DO_COND ($<ttype>$) = error_mark_node; }
2209 c99_block_lineno_labeled_stmt WHILE
2211 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2214 /* The forced readahead in here is because we might be at the end of a
2215 line, and the line and file won't be bumped until yylex absorbs the
2216 first token on the next line. */
2218 { if (yychar == YYEMPTY)
2220 $$ = input_filename; }
2224 { if (yychar == YYEMPTY)
2229 lineno_labeled_stmt:
2231 | lineno_label lineno_labeled_stmt
2234 /* Like lineno_labeled_stmt, but a block in C99. */
2235 c99_block_lineno_labeled_stmt:
2236 c99_block_start lineno_labeled_stmt c99_block_end
2238 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2242 save_filename save_lineno stmt
2245 STMT_LINENO ($3) = $2;
2246 /* ??? We currently have no way of recording
2247 the filename for a statement. This probably
2248 matters little in practice at the moment,
2249 but I suspect that problems will occur when
2250 doing inlining at the tree level. */
2256 save_filename save_lineno label
2259 STMT_LINENO ($3) = $2;
2264 select_or_iter_stmt:
2266 { c_expand_start_else ();
2267 $<itype>1 = stmt_count; }
2268 c99_block_lineno_labeled_stmt
2270 c_expand_end_cond ();
2271 if (extra_warnings && stmt_count == $<itype>1)
2272 warning ("empty body in an else-statement"); }
2273 | simple_if %prec IF
2274 { c_expand_end_cond ();
2275 /* This warning is here instead of in simple_if, because we
2276 do not want a warning if an empty if is followed by an
2277 else statement. Increment stmt_count so we don't
2278 give a second error if this is a nested `if'. */
2279 if (extra_warnings && stmt_count++ == $<itype>1)
2280 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2281 "empty body in an if-statement"); }
2282 /* Make sure c_expand_end_cond is run once
2283 for each call to c_expand_start_cond.
2284 Otherwise a crash is likely. */
2285 | simple_if ELSE error
2286 { c_expand_end_cond (); }
2290 { $4 = truthvalue_conversion ($4);
2292 = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
2293 c99_block_lineno_labeled_stmt
2294 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2297 { DO_COND ($1) = truthvalue_conversion ($3); }
2298 | do_stmt_start error
2301 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2302 NULL_TREE, NULL_TREE);
2303 add_stmt ($<ttype>$); }
2306 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2309 FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
2311 { FOR_EXPR ($<ttype>2) = $9; }
2312 c99_block_lineno_labeled_stmt
2313 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2314 | SWITCH '(' expr ')'
2316 $<ttype>$ = c_start_case ($3); }
2317 c99_block_lineno_labeled_stmt
2318 { c_finish_case (); }
2323 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2325 { check_for_loop_decls (); }
2328 /* Parse a single real statement, not including any labels. */
2331 { stmt_count++; $$ = $1; }
2334 $$ = c_expand_expr_stmt ($1); }
2335 | c99_block_start select_or_iter_stmt c99_block_end
2337 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2341 $$ = add_stmt (build_break_stmt ()); }
2344 $$ = add_stmt (build_continue_stmt ()); }
2347 $$ = c_expand_return (NULL_TREE); }
2350 $$ = c_expand_return ($2); }
2351 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2353 $$ = simple_asm_stmt ($4); }
2354 /* This is the case with just output operands. */
2355 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2357 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2358 /* This is the case with input operands as well. */
2359 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2360 asm_operands ')' ';'
2362 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2363 /* This is the case with clobbered registers as well. */
2364 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2365 asm_operands ':' asm_clobbers ')' ';'
2367 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2368 | GOTO identifier ';'
2371 decl = lookup_label ($2);
2374 TREE_USED (decl) = 1;
2375 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2382 pedwarn ("ISO C forbids `goto *expr;'");
2384 $3 = convert (ptr_type_node, $3);
2385 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2390 /* Any kind of label, including jump labels and case labels.
2391 ANSI C accepts labels only before statements, but we allow them
2392 also at the end of a compound statement. */
2394 label: CASE expr_no_commas ':'
2396 $$ = do_case ($2, NULL_TREE); }
2397 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2399 $$ = do_case ($2, $4); }
2402 $$ = do_case (NULL_TREE, NULL_TREE); }
2403 | identifier save_filename save_lineno ':' maybe_attribute
2404 { tree label = define_label ($2, $3, $1);
2408 decl_attributes (&label, $5, 0);
2409 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2416 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2420 { emit_line_note (input_filename, lineno);
2423 { emit_line_note (input_filename, lineno); }
2432 /* These are the operands other than the first string and colon
2433 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2434 asm_operands: /* empty */
2436 | nonnull_asm_operands
2439 nonnull_asm_operands:
2441 | nonnull_asm_operands ',' asm_operand
2442 { $$ = chainon ($1, $3); }
2447 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2448 | '[' identifier ']' STRING '(' expr ')'
2449 { $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2454 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2455 | asm_clobbers ',' string
2456 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2459 /* This is what appears inside the parens in a function declarator.
2460 Its value is a list of ..._TYPE nodes. Attributes must appear here
2461 to avoid a conflict with their appearance after an open parenthesis
2462 in an abstract declarator, as in
2463 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2467 clear_parm_order ();
2468 declare_parm_level (0); }
2471 parmlist_tags_warning ();
2472 poplevel (0, 0, 0); }
2480 pedwarn ("ISO C forbids forward parameter declarations");
2481 /* Mark the forward decls as such. */
2482 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2483 TREE_ASM_WRITTEN (parm) = 1;
2484 clear_parm_order (); }
2486 { /* Dummy action so attributes are in known place
2487 on parser stack. */ }
2491 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2494 /* This is what appears inside the parens in a function declarator.
2495 Is value is represented in the format that grokdeclarator expects. */
2496 parmlist_2: /* empty */
2497 { $$ = get_parm_info (0); }
2499 { $$ = get_parm_info (0);
2500 /* Gcc used to allow this as an extension. However, it does
2501 not work for all targets, and thus has been disabled.
2502 Also, since func (...) and func () are indistinguishable,
2503 it caused problems with the code in expand_builtin which
2504 tries to verify that BUILT_IN_NEXT_ARG is being used
2506 error ("ISO C requires a named argument before `...'");
2509 { $$ = get_parm_info (1); }
2510 | parms ',' ELLIPSIS
2511 { $$ = get_parm_info (0); }
2516 { push_parm_decl ($1); }
2518 { push_parm_decl ($3); }
2521 /* A single parameter declaration or parameter type name,
2522 as found in a parmlist. */
2524 declspecs_ts setspecs parm_declarator maybe_attribute
2525 { $$ = build_tree_list (build_tree_list (current_declspecs,
2527 chainon ($4, all_prefix_attributes));
2528 POP_DECLSPEC_STACK; }
2529 | declspecs_ts setspecs notype_declarator maybe_attribute
2530 { $$ = build_tree_list (build_tree_list (current_declspecs,
2532 chainon ($4, all_prefix_attributes));
2533 POP_DECLSPEC_STACK; }
2534 | declspecs_ts setspecs absdcl_maybe_attribute
2536 POP_DECLSPEC_STACK; }
2537 | declspecs_nots setspecs notype_declarator maybe_attribute
2538 { $$ = build_tree_list (build_tree_list (current_declspecs,
2540 chainon ($4, all_prefix_attributes));
2541 POP_DECLSPEC_STACK; }
2543 | declspecs_nots setspecs absdcl_maybe_attribute
2545 POP_DECLSPEC_STACK; }
2548 /* The first parm, which must suck attributes from off the top of the parser
2551 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2552 { $$ = build_tree_list (build_tree_list (current_declspecs,
2554 chainon ($4, all_prefix_attributes));
2555 POP_DECLSPEC_STACK; }
2556 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2557 { $$ = build_tree_list (build_tree_list (current_declspecs,
2559 chainon ($4, all_prefix_attributes));
2560 POP_DECLSPEC_STACK; }
2561 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2563 POP_DECLSPEC_STACK; }
2564 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2565 { $$ = build_tree_list (build_tree_list (current_declspecs,
2567 chainon ($4, all_prefix_attributes));
2568 POP_DECLSPEC_STACK; }
2570 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2572 POP_DECLSPEC_STACK; }
2577 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2578 all_prefix_attributes = prefix_attributes; }
2581 /* This is used in a function definition
2582 where either a parmlist or an identifier list is ok.
2583 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2584 parmlist_or_identifiers:
2586 clear_parm_order ();
2587 declare_parm_level (1); }
2588 parmlist_or_identifiers_1
2590 parmlist_tags_warning ();
2591 poplevel (0, 0, 0); }
2594 parmlist_or_identifiers_1:
2598 for (t = $1; t; t = TREE_CHAIN (t))
2599 if (TREE_VALUE (t) == NULL_TREE)
2600 error ("`...' in old-style identifier list");
2601 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2604 /* A nonempty list of identifiers. */
2607 { $$ = build_tree_list (NULL_TREE, $1); }
2608 | identifiers ',' IDENTIFIER
2609 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2612 /* A nonempty list of identifiers, including typenames. */
2613 identifiers_or_typenames:
2615 { $$ = build_tree_list (NULL_TREE, $1); }
2616 | identifiers_or_typenames ',' identifier
2617 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2622 { $$ = SAVE_WARN_FLAGS();
2624 warn_pointer_arith = 0; }
2628 /* Objective-C productions. */
2638 if (objc_implementation_context)
2640 finish_class (objc_implementation_context);
2641 objc_ivar_chain = NULL_TREE;
2642 objc_implementation_context = NULL_TREE;
2645 warning ("`@end' must appear in an implementation context");
2649 /* A nonempty list of identifiers. */
2652 { $$ = build_tree_list (NULL_TREE, $1); }
2653 | identifier_list ',' identifier
2654 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2658 CLASS identifier_list ';'
2660 objc_declare_class ($2);
2664 ALIAS identifier identifier ';'
2666 objc_declare_alias ($2, $3);
2670 INTERFACE identifier protocolrefs '{'
2672 objc_interface_context = objc_ivar_context
2673 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2674 objc_public_flag = 0;
2678 continue_class (objc_interface_context);
2683 finish_class (objc_interface_context);
2684 objc_interface_context = NULL_TREE;
2687 | INTERFACE identifier protocolrefs
2689 objc_interface_context
2690 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2691 continue_class (objc_interface_context);
2696 finish_class (objc_interface_context);
2697 objc_interface_context = NULL_TREE;
2700 | INTERFACE identifier ':' identifier protocolrefs '{'
2702 objc_interface_context = objc_ivar_context
2703 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2704 objc_public_flag = 0;
2708 continue_class (objc_interface_context);
2713 finish_class (objc_interface_context);
2714 objc_interface_context = NULL_TREE;
2717 | INTERFACE identifier ':' identifier protocolrefs
2719 objc_interface_context
2720 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2721 continue_class (objc_interface_context);
2726 finish_class (objc_interface_context);
2727 objc_interface_context = NULL_TREE;
2730 | IMPLEMENTATION identifier '{'
2732 objc_implementation_context = objc_ivar_context
2733 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2734 objc_public_flag = 0;
2739 = continue_class (objc_implementation_context);
2742 | IMPLEMENTATION identifier
2744 objc_implementation_context
2745 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2747 = continue_class (objc_implementation_context);
2750 | IMPLEMENTATION identifier ':' identifier '{'
2752 objc_implementation_context = objc_ivar_context
2753 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2754 objc_public_flag = 0;
2759 = continue_class (objc_implementation_context);
2762 | IMPLEMENTATION identifier ':' identifier
2764 objc_implementation_context
2765 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2767 = continue_class (objc_implementation_context);
2770 | INTERFACE identifier '(' identifier ')' protocolrefs
2772 objc_interface_context
2773 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2774 continue_class (objc_interface_context);
2779 finish_class (objc_interface_context);
2780 objc_interface_context = NULL_TREE;
2783 | IMPLEMENTATION identifier '(' identifier ')'
2785 objc_implementation_context
2786 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2788 = continue_class (objc_implementation_context);
2793 PROTOCOL identifier protocolrefs
2795 objc_pq_context = 1;
2796 objc_interface_context
2797 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2801 objc_pq_context = 0;
2802 finish_protocol(objc_interface_context);
2803 objc_interface_context = NULL_TREE;
2805 /* The @protocol forward-declaration production introduces a
2806 reduce/reduce conflict on ';', which should be resolved in
2807 favor of the production 'identifier_list -> identifier'. */
2808 | PROTOCOL identifier_list ';'
2810 objc_declare_protocols ($2);
2819 | non_empty_protocolrefs
2822 non_empty_protocolrefs:
2823 ARITHCOMPARE identifier_list ARITHCOMPARE
2825 if ($1 == LT_EXPR && $3 == GT_EXPR)
2833 ivar_decl_list visibility_spec ivar_decls
2838 PRIVATE { objc_public_flag = 2; }
2839 | PROTECTED { objc_public_flag = 0; }
2840 | PUBLIC { objc_public_flag = 1; }
2848 | ivar_decls ivar_decl ';'
2852 pedwarn ("extra semicolon in struct or union specified");
2857 /* There is a shift-reduce conflict here, because `components' may
2858 start with a `typename'. It happens that shifting (the default resolution)
2859 does the right thing, because it treats the `typename' as part of
2860 a `typed_typespecs'.
2862 It is possible that this same technique would allow the distinction
2863 between `notype_initdecls' and `initdecls' to be eliminated.
2864 But I am being cautious and not trying it. */
2867 declspecs_nosc_ts setspecs ivars
2869 POP_DECLSPEC_STACK; }
2870 | declspecs_nosc_nots setspecs ivars
2872 POP_DECLSPEC_STACK; }
2881 | ivars ',' maybe_resetattrs ivar_declarator
2887 $$ = add_instance_variable (objc_ivar_context,
2889 $1, current_declspecs,
2892 | declarator ':' expr_no_commas
2894 $$ = add_instance_variable (objc_ivar_context,
2896 $1, current_declspecs, $3);
2898 | ':' expr_no_commas
2900 $$ = add_instance_variable (objc_ivar_context,
2903 current_declspecs, $2);
2909 { objc_inherit_code = CLASS_METHOD_DECL; }
2911 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2917 objc_pq_context = 1;
2918 if (!objc_implementation_context)
2919 fatal_error ("method definition not in class context");
2923 objc_pq_context = 0;
2924 if (objc_inherit_code == CLASS_METHOD_DECL)
2925 add_class_method (objc_implementation_context, $3);
2927 add_instance_method (objc_implementation_context, $3);
2928 start_method_def ($3);
2932 continue_method_def ();
2936 finish_method_def ();
2940 /* the reason for the strange actions in this rule
2941 is so that notype_initdecls when reached via datadef
2942 can find a valid list of type and sc specs in $0. */
2946 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2949 methodprotolist2: /* eliminates a shift/reduce conflict */
2952 | methodprotolist2 methodproto
2953 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2964 /* Remember protocol qualifiers in prototypes. */
2965 objc_pq_context = 1;
2969 /* Forget protocol qualifiers here. */
2970 objc_pq_context = 0;
2971 if (objc_inherit_code == CLASS_METHOD_DECL)
2972 add_class_method (objc_interface_context, $3);
2974 add_instance_method (objc_interface_context, $3);
2980 '(' typename ')' unaryselector
2982 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2987 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2990 | '(' typename ')' keywordselector optparmlist
2992 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2995 | keywordselector optparmlist
2997 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3001 /* "optarglist" assumes that start_method_def has already been called...
3002 if it is not, the "xdecls" will not be placed in the proper scope */
3009 /* to get around the following situation: "int foo (int a) int b; {}" that
3010 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3025 declspecs_ts setspecs myparms ';'
3026 { POP_DECLSPEC_STACK; }
3028 { shadow_tag ($1); }
3029 | declspecs_nots ';'
3030 { pedwarn ("empty declaration"); }
3035 { push_parm_decl ($1); }
3036 | myparms ',' myparm
3037 { push_parm_decl ($3); }
3040 /* A single parameter declaration or parameter type name,
3041 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3044 parm_declarator maybe_attribute
3045 { $$ = build_tree_list (build_tree_list (current_declspecs,
3047 chainon ($2, all_prefix_attributes)); }
3048 | notype_declarator maybe_attribute
3049 { $$ = build_tree_list (build_tree_list (current_declspecs,
3051 chainon ($2, all_prefix_attributes)); }
3052 | absdcl_maybe_attribute
3063 /* oh what a kludge! */
3064 $$ = objc_ellipsis_node;
3072 /* returns a tree list node generated by get_parm_info */
3085 | keywordselector keyworddecl
3087 $$ = chainon ($1, $2);
3100 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3101 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3102 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3103 | TYPESPEC | TYPE_QUAL
3107 selector ':' '(' typename ')' identifier
3109 $$ = build_keyword_decl ($1, $4, $6);
3112 | selector ':' identifier
3114 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3117 | ':' '(' typename ')' identifier
3119 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3124 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3135 | keywordarglist keywordarg
3137 $$ = chainon ($1, $2);
3145 if (TREE_CHAIN ($1) == NULL_TREE)
3146 /* just return the expr., remove a level of indirection */
3147 $$ = TREE_VALUE ($1);
3149 /* we have a comma expr., we will collapse later */
3155 selector ':' keywordexpr
3157 $$ = build_tree_list ($1, $3);
3161 $$ = build_tree_list (NULL_TREE, $2);
3169 $$ = get_class_reference ($1);
3175 { objc_receiver_context = 1; }
3177 { objc_receiver_context = 0; }
3180 $$ = build_tree_list ($3, $5);
3191 | keywordnamelist keywordname
3193 $$ = chainon ($1, $2);
3200 $$ = build_tree_list ($1, NULL_TREE);
3204 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3209 SELECTOR '(' selectorarg ')'
3216 PROTOCOL '(' identifier ')'
3222 /* extension to support C-structures in the archiver */
3225 ENCODE '(' typename ')'
3227 $$ = groktypename ($3);
3234 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3235 cpplib.h's token codes into yacc's token codes. */
3237 static enum cpp_ttype last_token;
3239 /* The reserved keyword table. */
3243 ENUM_BITFIELD(rid) rid : 16;
3244 unsigned int disable : 16;
3247 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3249 #define D_TRAD 0x01 /* not in traditional C */
3250 #define D_C89 0x02 /* not in C89 */
3251 #define D_EXT 0x04 /* GCC extension */
3252 #define D_EXT89 0x08 /* GCC extension incorporated in C99 */
3253 #define D_OBJC 0x10 /* Objective C only */
3255 static const struct resword reswords[] =
3257 { "_Bool", RID_BOOL, 0 },
3258 { "_Complex", RID_COMPLEX, 0 },
3259 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3260 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3261 { "__alignof", RID_ALIGNOF, 0 },
3262 { "__alignof__", RID_ALIGNOF, 0 },
3263 { "__asm", RID_ASM, 0 },
3264 { "__asm__", RID_ASM, 0 },
3265 { "__attribute", RID_ATTRIBUTE, 0 },
3266 { "__attribute__", RID_ATTRIBUTE, 0 },
3267 { "__bounded", RID_BOUNDED, 0 },
3268 { "__bounded__", RID_BOUNDED, 0 },
3269 { "__builtin_va_arg", RID_VA_ARG, 0 },
3270 { "__complex", RID_COMPLEX, 0 },
3271 { "__complex__", RID_COMPLEX, 0 },
3272 { "__const", RID_CONST, 0 },
3273 { "__const__", RID_CONST, 0 },
3274 { "__extension__", RID_EXTENSION, 0 },
3275 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3276 { "__imag", RID_IMAGPART, 0 },
3277 { "__imag__", RID_IMAGPART, 0 },
3278 { "__inline", RID_INLINE, 0 },
3279 { "__inline__", RID_INLINE, 0 },
3280 { "__label__", RID_LABEL, 0 },
3281 { "__ptrbase", RID_PTRBASE, 0 },
3282 { "__ptrbase__", RID_PTRBASE, 0 },
3283 { "__ptrextent", RID_PTREXTENT, 0 },
3284 { "__ptrextent__", RID_PTREXTENT, 0 },
3285 { "__ptrvalue", RID_PTRVALUE, 0 },
3286 { "__ptrvalue__", RID_PTRVALUE, 0 },
3287 { "__real", RID_REALPART, 0 },
3288 { "__real__", RID_REALPART, 0 },
3289 { "__restrict", RID_RESTRICT, 0 },
3290 { "__restrict__", RID_RESTRICT, 0 },
3291 { "__signed", RID_SIGNED, 0 },
3292 { "__signed__", RID_SIGNED, 0 },
3293 { "__typeof", RID_TYPEOF, 0 },
3294 { "__typeof__", RID_TYPEOF, 0 },
3295 { "__unbounded", RID_UNBOUNDED, 0 },
3296 { "__unbounded__", RID_UNBOUNDED, 0 },
3297 { "__volatile", RID_VOLATILE, 0 },
3298 { "__volatile__", RID_VOLATILE, 0 },
3299 { "asm", RID_ASM, D_EXT },
3300 { "auto", RID_AUTO, 0 },
3301 { "break", RID_BREAK, 0 },
3302 { "case", RID_CASE, 0 },
3303 { "char", RID_CHAR, 0 },
3304 { "const", RID_CONST, D_TRAD },
3305 { "continue", RID_CONTINUE, 0 },
3306 { "default", RID_DEFAULT, 0 },
3307 { "do", RID_DO, 0 },
3308 { "double", RID_DOUBLE, 0 },
3309 { "else", RID_ELSE, 0 },
3310 { "enum", RID_ENUM, 0 },
3311 { "extern", RID_EXTERN, 0 },
3312 { "float", RID_FLOAT, 0 },
3313 { "for", RID_FOR, 0 },
3314 { "goto", RID_GOTO, 0 },
3315 { "if", RID_IF, 0 },
3316 { "inline", RID_INLINE, D_TRAD|D_EXT89 },
3317 { "int", RID_INT, 0 },
3318 { "long", RID_LONG, 0 },
3319 { "register", RID_REGISTER, 0 },
3320 { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
3321 { "return", RID_RETURN, 0 },
3322 { "short", RID_SHORT, 0 },
3323 { "signed", RID_SIGNED, D_TRAD },
3324 { "sizeof", RID_SIZEOF, 0 },
3325 { "static", RID_STATIC, 0 },
3326 { "struct", RID_STRUCT, 0 },
3327 { "switch", RID_SWITCH, 0 },
3328 { "typedef", RID_TYPEDEF, 0 },
3329 { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
3330 { "union", RID_UNION, 0 },
3331 { "unsigned", RID_UNSIGNED, 0 },
3332 { "void", RID_VOID, 0 },
3333 { "volatile", RID_VOLATILE, D_TRAD },
3334 { "while", RID_WHILE, 0 },
3336 { "id", RID_ID, D_OBJC },
3338 /* These objc keywords are recognized only immediately after
3340 { "class", RID_AT_CLASS, D_OBJC },
3341 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3342 { "defs", RID_AT_DEFS, D_OBJC },
3343 { "encode", RID_AT_ENCODE, D_OBJC },
3344 { "end", RID_AT_END, D_OBJC },
3345 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3346 { "interface", RID_AT_INTERFACE, D_OBJC },
3347 { "private", RID_AT_PRIVATE, D_OBJC },
3348 { "protected", RID_AT_PROTECTED, D_OBJC },
3349 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3350 { "public", RID_AT_PUBLIC, D_OBJC },
3351 { "selector", RID_AT_SELECTOR, D_OBJC },
3353 /* These are recognized only in protocol-qualifier context
3355 { "bycopy", RID_BYCOPY, D_OBJC },
3356 { "byref", RID_BYREF, D_OBJC },
3357 { "in", RID_IN, D_OBJC },
3358 { "inout", RID_INOUT, D_OBJC },
3359 { "oneway", RID_ONEWAY, D_OBJC },
3360 { "out", RID_OUT, D_OBJC },
3363 #define N_reswords (sizeof reswords / sizeof (struct resword))
3365 /* Table mapping from RID_* constants to yacc token numbers.
3366 Unfortunately we have to have entries for all the keywords in all
3368 static const short rid_to_yy[RID_MAX] =
3370 /* RID_STATIC */ SCSPEC,
3371 /* RID_UNSIGNED */ TYPESPEC,
3372 /* RID_LONG */ TYPESPEC,
3373 /* RID_CONST */ TYPE_QUAL,
3374 /* RID_EXTERN */ SCSPEC,
3375 /* RID_REGISTER */ SCSPEC,
3376 /* RID_TYPEDEF */ SCSPEC,
3377 /* RID_SHORT */ TYPESPEC,
3378 /* RID_INLINE */ SCSPEC,
3379 /* RID_VOLATILE */ TYPE_QUAL,
3380 /* RID_SIGNED */ TYPESPEC,
3381 /* RID_AUTO */ SCSPEC,
3382 /* RID_RESTRICT */ TYPE_QUAL,
3385 /* RID_BOUNDED */ TYPE_QUAL,
3386 /* RID_UNBOUNDED */ TYPE_QUAL,
3387 /* RID_COMPLEX */ TYPESPEC,
3391 /* RID_VIRTUAL */ 0,
3392 /* RID_EXPLICIT */ 0,
3394 /* RID_MUTABLE */ 0,
3397 /* RID_IN */ TYPE_QUAL,
3398 /* RID_OUT */ TYPE_QUAL,
3399 /* RID_INOUT */ TYPE_QUAL,
3400 /* RID_BYCOPY */ TYPE_QUAL,
3401 /* RID_BYREF */ TYPE_QUAL,
3402 /* RID_ONEWAY */ TYPE_QUAL,
3405 /* RID_INT */ TYPESPEC,
3406 /* RID_CHAR */ TYPESPEC,
3407 /* RID_FLOAT */ TYPESPEC,
3408 /* RID_DOUBLE */ TYPESPEC,
3409 /* RID_VOID */ TYPESPEC,
3410 /* RID_ENUM */ ENUM,
3411 /* RID_STRUCT */ STRUCT,
3412 /* RID_UNION */ UNION,
3414 /* RID_ELSE */ ELSE,
3415 /* RID_WHILE */ WHILE,
3418 /* RID_SWITCH */ SWITCH,
3419 /* RID_CASE */ CASE,
3420 /* RID_DEFAULT */ DEFAULT,
3421 /* RID_BREAK */ BREAK,
3422 /* RID_CONTINUE */ CONTINUE,
3423 /* RID_RETURN */ RETURN,
3424 /* RID_GOTO */ GOTO,
3425 /* RID_SIZEOF */ SIZEOF,
3428 /* RID_ASM */ ASM_KEYWORD,
3429 /* RID_TYPEOF */ TYPEOF,
3430 /* RID_ALIGNOF */ ALIGNOF,
3431 /* RID_ATTRIBUTE */ ATTRIBUTE,
3432 /* RID_VA_ARG */ VA_ARG,
3433 /* RID_EXTENSION */ EXTENSION,
3434 /* RID_IMAGPART */ IMAGPART,
3435 /* RID_REALPART */ REALPART,
3436 /* RID_LABEL */ LABEL,
3437 /* RID_PTRBASE */ PTR_BASE,
3438 /* RID_PTREXTENT */ PTR_EXTENT,
3439 /* RID_PTRVALUE */ PTR_VALUE,
3441 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3442 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3443 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3446 /* RID_BOOL */ TYPESPEC,
3450 /* RID_PRIVATE */ 0,
3451 /* RID_PROTECTED */ 0,
3452 /* RID_TEMPLATE */ 0,
3457 /* RID_NAMESPACE */ 0,
3459 /* RID_OPERATOR */ 0,
3464 /* RID_TYPENAME */ 0,
3469 /* RID_CONSTCAST */ 0,
3470 /* RID_DYNCAST */ 0,
3471 /* RID_REINTCAST */ 0,
3472 /* RID_STATCAST */ 0,
3474 /* alternate spellings */
3488 /* RID_ID */ OBJECTNAME,
3489 /* RID_AT_ENCODE */ ENCODE,
3490 /* RID_AT_END */ END,
3491 /* RID_AT_CLASS */ CLASS,
3492 /* RID_AT_ALIAS */ ALIAS,
3493 /* RID_AT_DEFS */ DEFS,
3494 /* RID_AT_PRIVATE */ PRIVATE,
3495 /* RID_AT_PROTECTED */ PROTECTED,
3496 /* RID_AT_PUBLIC */ PUBLIC,
3497 /* RID_AT_PROTOCOL */ PROTOCOL,
3498 /* RID_AT_SELECTOR */ SELECTOR,
3499 /* RID_AT_INTERFACE */ INTERFACE,
3500 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3508 int mask = (flag_isoc99 ? 0 : D_C89)
3509 | (flag_traditional ? D_TRAD : 0)
3510 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3512 if (c_language != clk_objective_c)
3515 /* It is not necessary to register ridpointers as a GC root, because
3516 all the trees it points to are permanently interned in the
3517 get_identifier hash anyway. */
3518 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3519 for (i = 0; i < N_reswords; i++)
3521 /* If a keyword is disabled, do not enter it into the table
3522 and so create a canonical spelling that isn't a keyword. */
3523 if (reswords[i].disable & mask)
3526 id = get_identifier (reswords[i].word);
3527 C_RID_CODE (id) = reswords[i].rid;
3528 C_IS_RESERVED_WORD (id) = 1;
3529 ridpointers [(int) reswords[i].rid] = id;
3536 cpp_finish (parse_in);
3537 /* Call to cpp_destroy () omitted for performance reasons. */
3538 errorcount += cpp_errors (parse_in);
3541 #define NAME(type) cpp_type2name (type)
3547 const char *string = _(msgid);
3549 if (last_token == CPP_EOF)
3550 error ("%s at end of input", string);
3551 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3553 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3554 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3555 if (val <= UCHAR_MAX && ISGRAPH (val))
3556 error ("%s before %s'%c'", string, ell, val);
3558 error ("%s before %s'\\x%x'", string, ell, val);
3560 else if (last_token == CPP_STRING
3561 || last_token == CPP_WSTRING)
3562 error ("%s before string constant", string);
3563 else if (last_token == CPP_NUMBER)
3564 error ("%s before numeric constant", string);
3565 else if (last_token == CPP_NAME)
3566 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3568 error ("%s before '%s' token", string, NAME(last_token));
3577 int objc_force_identifier = objc_need_raw_identifier;
3578 OBJC_NEED_RAW_IDENTIFIER (0);
3581 if (C_IS_RESERVED_WORD (yylval.ttype))
3583 enum rid rid_code = C_RID_CODE (yylval.ttype);
3586 /* Turn non-typedefed refs to "id" into plain identifiers; this
3587 allows constructs like "void foo(id id);" to work. */
3588 if (rid_code == RID_ID)
3590 decl = lookup_name (yylval.ttype);
3591 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3595 if (!OBJC_IS_AT_KEYWORD (rid_code)
3596 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3599 int yycode = rid_to_yy[(int) rid_code];
3600 if (yycode == STRING_FUNC_NAME)
3602 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3603 to string constants. */
3604 const char *name = fname_string (rid_code);
3606 yylval.ttype = build_string (strlen (name) + 1, name);
3607 last_token = CPP_STRING; /* so yyerror won't choke */
3611 /* Return the canonical spelling for this keyword. */
3612 yylval.ttype = ridpointers[(int) rid_code];
3617 decl = lookup_name (yylval.ttype);
3620 if (TREE_CODE (decl) == TYPE_DECL)
3626 tree objc_interface_decl = is_class_name (yylval.ttype);
3627 /* ObjC class names are in the same namespace as variables and
3628 typedefs, and hence are shadowed by local declarations. */
3629 if (objc_interface_decl
3630 && (global_bindings_p ()
3631 || (!objc_force_identifier && !decl)))
3633 yylval.ttype = objc_interface_decl;
3647 last_token = c_lex (&yylval.ttype);
3650 case CPP_EQ: return '=';
3651 case CPP_NOT: return '!';
3652 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3653 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3654 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3655 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3656 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3657 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3658 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3659 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3660 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3661 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3662 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3663 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3665 case CPP_COMPL: return '~';
3666 case CPP_AND_AND: return ANDAND;
3667 case CPP_OR_OR: return OROR;
3668 case CPP_QUERY: return '?';
3669 case CPP_OPEN_PAREN: return '(';
3670 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3671 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3672 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3673 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3675 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3676 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3677 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3678 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3679 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3680 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3681 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3682 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3683 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3684 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3686 case CPP_OPEN_SQUARE: return '[';
3687 case CPP_CLOSE_SQUARE: return ']';
3688 case CPP_OPEN_BRACE: return '{';
3689 case CPP_CLOSE_BRACE: return '}';
3690 case CPP_ELLIPSIS: return ELLIPSIS;
3692 case CPP_PLUS_PLUS: return PLUSPLUS;
3693 case CPP_MINUS_MINUS: return MINUSMINUS;
3694 case CPP_DEREF: return POINTSAT;
3695 case CPP_DOT: return '.';
3697 /* The following tokens may affect the interpretation of any
3698 identifiers following, if doing Objective-C. */
3699 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3700 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3701 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3702 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3708 return yylexname ();
3719 /* This token is Objective-C specific. It gives the next token
3720 special significance. */
3725 enum cpp_ttype after_at_type;
3727 after_at_type = c_lex (&after_at);
3729 if (after_at_type == CPP_NAME
3730 && C_IS_RESERVED_WORD (after_at)
3731 && OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
3733 yylval.ttype = after_at;
3734 last_token = after_at_type;
3735 return rid_to_yy [(int) C_RID_CODE (after_at)];
3737 _cpp_backup_tokens (parse_in, 1);
3742 /* These tokens are C++ specific (and will not be generated
3743 in C mode, but let's be cautious). */
3745 case CPP_DEREF_STAR:
3751 /* These tokens should not survive translation phase 4. */
3754 error ("syntax error at '%s' token", NAME(last_token));
3767 timevar_push (TV_LEX);
3769 timevar_pop (TV_LEX);
3773 /* Sets the value of the 'yydebug' variable to VALUE.
3774 This is a function so we don't have to have YYDEBUG defined
3775 in order to build the compiler. */
3778 c_set_yydebug (value)
3784 warning ("YYDEBUG not defined.");
3788 /* Function used when yydebug is set, to print a token in more detail. */
3791 yyprint (file, yychar, yyl)
3798 fprintf (file, " [%s]", NAME(last_token));
3808 if (IDENTIFIER_POINTER (t))
3809 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3813 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3814 if (TREE_CODE (t) == INTEGER_CST)
3816 #if HOST_BITS_PER_WIDE_INT == 64
3817 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3820 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3827 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3833 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3838 /* This is not the ideal place to put these, but we have to get them out
3839 of c-lex.c because cp/lex.c has its own versions. */
3841 /* Return something to represent absolute declarators containing a *.
3842 TARGET is the absolute declarator that the * contains.
3843 TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
3844 to apply to the pointer type, represented as identifiers, possible mixed
3847 We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
3848 if attributes are present) and whose type is the modifier list. */
3851 make_pointer_declarator (type_quals_attrs, target)
3852 tree type_quals_attrs, target;
3855 tree itarget = target;
3856 split_specs_attrs (type_quals_attrs, &quals, &attrs);
3857 if (attrs != NULL_TREE)
3858 itarget = tree_cons (attrs, target, NULL_TREE);
3859 return build1 (INDIRECT_REF, quals, itarget);