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. */
54 #ifdef MULTIBYTE_CHARS
62 /* Like YYERROR but do call yyerror. */
63 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
65 /* Cause the "yydebug" variable to be defined. */
68 /* Rename the "yyparse" function so that we can override it elsewhere. */
69 #define yyparse yyparse_1
74 %union {long itype; tree ttype; enum tree_code code;
75 const char *filename; int lineno; }
77 /* All identifiers that are not reserved words
78 and are not declared typedefs in the current block */
81 /* All identifiers that are declared typedefs in the current block.
82 In some contexts, they are treated just like IDENTIFIER,
83 but they can also serve as typespecs in declarations. */
86 /* Reserved words that specify storage class.
87 yylval contains an IDENTIFIER_NODE which indicates which one. */
90 /* Reserved words that specify type.
91 yylval contains an IDENTIFIER_NODE which indicates which one. */
94 /* Reserved words that qualify type: "const", "volatile", or "restrict".
95 yylval contains an IDENTIFIER_NODE which indicates which one. */
98 /* Character or numeric constants.
99 yylval is the node for the constant. */
102 /* String constants in raw form.
103 yylval is a STRING_CST node. */
106 /* "...", used for functions with variable arglists. */
109 /* the reserved words */
110 /* SCO include files test "ASM", so use something else. */
111 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
112 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
113 %token ATTRIBUTE EXTENSION LABEL
114 %token REALPART IMAGPART VA_ARG
115 %token PTR_VALUE PTR_BASE PTR_EXTENT
117 /* function name can be a string const or a var decl. */
118 %token STRING_FUNC_NAME VAR_FUNC_NAME
120 /* Add precedence rules to solve dangling else s/r conflict */
124 /* Define the operator tokens and their precedences.
125 The value is an integer because, if used, it is the tree code
126 to use in the expression made from the operator. */
128 %right <code> ASSIGN '='
129 %right <code> '?' ':'
135 %left <code> EQCOMPARE
136 %left <code> ARITHCOMPARE
137 %left <code> LSHIFT RSHIFT
139 %left <code> '*' '/' '%'
140 %right <code> UNARY PLUSPLUS MINUSMINUS
142 %left <code> POINTSAT '.' '(' '['
144 /* The Objective-C keywords. These are included in C and in
145 Objective C, so that the token codes are the same in both. */
146 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
147 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
150 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
151 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
153 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
154 %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
155 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
156 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
157 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
158 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
159 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
160 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
161 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
162 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
163 %type <ttype> declspecs_ts declspecs_nots
164 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
165 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
166 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
167 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
168 %type <ttype> typespec_nonreserved_nonattr
170 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL maybe_type_qual
171 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
172 %type <ttype> init maybeasm
173 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
174 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
175 %type <ttype> any_word extension
177 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
178 %type <ttype> do_stmt_start poplevel stmt label
180 %type <ttype> c99_block_start c99_block_end
181 %type <ttype> declarator
182 %type <ttype> notype_declarator after_type_declarator
183 %type <ttype> parm_declarator
184 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
185 %type <ttype> array_declarator
187 %type <ttype> structsp_attr structsp_nonattr
188 %type <ttype> component_decl_list component_decl_list2
189 %type <ttype> component_decl components components_notype component_declarator
190 %type <ttype> component_notype_declarator
191 %type <ttype> enumlist enumerator
192 %type <ttype> struct_head union_head enum_head
193 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
194 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
195 %type <ttype> xexpr parms parm firstparm identifiers
197 %type <ttype> parmlist parmlist_1 parmlist_2
198 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
199 %type <ttype> identifiers_or_typenames
201 %type <itype> setspecs setspecs_fp
203 %type <filename> save_filename
204 %type <lineno> save_lineno
207 /* the Objective-C nonterminals */
209 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
210 %type <ttype> methoddecl unaryselector keywordselector selector
211 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
212 %type <ttype> keywordexpr keywordarglist keywordarg
213 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
214 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
215 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
217 %type <ttype> CLASSNAME OBJECTNAME
221 /* Number of statements (loosely speaking) and compound statements
223 static int stmt_count;
224 static int compstmt_count;
226 /* Input file and line number of the end of the body of last simple_if;
227 used by the stmt-rule immediately after simple_if returns. */
228 static const char *if_stmt_file;
229 static int if_stmt_line;
231 /* List of types and structure classes of the current declaration. */
232 static tree current_declspecs = NULL_TREE;
233 static tree prefix_attributes = NULL_TREE;
235 /* List of all the attributes applying to the identifier currently being
236 declared; includes prefix_attributes and possibly some more attributes
237 just after a comma. */
238 static tree all_prefix_attributes = NULL_TREE;
240 /* Stack of saved values of current_declspecs, prefix_attributes and
241 all_prefix_attributes. */
242 static tree declspec_stack;
244 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
245 should be called from the productions making use of setspecs. */
246 #define PUSH_DECLSPEC_STACK \
248 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
249 all_prefix_attributes), \
254 #define POP_DECLSPEC_STACK \
256 current_declspecs = TREE_VALUE (declspec_stack); \
257 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
258 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
259 declspec_stack = TREE_CHAIN (declspec_stack); \
262 /* For __extension__, save/restore the warning flags which are
263 controlled by __extension__. */
264 #define SAVE_WARN_FLAGS() \
265 size_int (pedantic | (warn_pointer_arith << 1))
266 #define RESTORE_WARN_FLAGS(tval) \
268 int val = tree_low_cst (tval, 0); \
269 pedantic = val & 1; \
270 warn_pointer_arith = (val >> 1) & 1; \
274 /* Objective-C specific parser/lexer information */
276 static enum tree_code objc_inherit_code;
277 static int objc_pq_context = 0, objc_public_flag = 0;
279 /* The following flag is needed to contextualize ObjC lexical analysis.
280 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
281 an identifier to an ObjC class, even if a class with that name
283 static int objc_need_raw_identifier;
284 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
288 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
291 /* Tell yyparse how to print a token's value, if yydebug is set. */
293 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
295 static void yyprint PARAMS ((FILE *, int, YYSTYPE));
296 static void yyerror PARAMS ((const char *));
297 static int yylexname PARAMS ((void));
298 static inline int _yylex PARAMS ((void));
299 static int yylex PARAMS ((void));
300 static void init_reswords PARAMS ((void));
302 /* Add GC roots for variables local to this file. */
308 ggc_add_tree_root (&declspec_stack, 1);
309 ggc_add_tree_root (¤t_declspecs, 1);
310 ggc_add_tree_root (&prefix_attributes, 1);
311 ggc_add_tree_root (&all_prefix_attributes, 1);
319 pedwarn ("ISO C forbids an empty source file");
324 /* In case there were missing closebraces,
325 get us back to the global binding level. */
326 while (! global_bindings_p ())
329 finish_fname_decls ();
335 /* the reason for the strange actions in this rule
336 is so that notype_initdecls when reached via datadef
337 can find a valid list of type and sc specs in $0. */
340 {$<ttype>$ = NULL_TREE; } extdef
341 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
350 | ASM_KEYWORD '(' expr ')' ';'
352 if ((TREE_CODE ($3) == ADDR_EXPR
353 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
354 || TREE_CODE ($3) == STRING_CST)
357 error ("argument of `asm' is not a constant string"); }
359 { RESTORE_WARN_FLAGS ($1); }
363 setspecs notype_initdecls ';'
365 error ("ISO C forbids data definition with no type or storage class");
366 else if (!flag_traditional)
367 warning ("data definition has no type or storage class");
369 POP_DECLSPEC_STACK; }
370 | declspecs_nots setspecs notype_initdecls ';'
371 { POP_DECLSPEC_STACK; }
372 | declspecs_ts setspecs initdecls ';'
373 { POP_DECLSPEC_STACK; }
380 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
384 declspecs_ts setspecs declarator
385 { if (! start_function (current_declspecs, $3,
386 all_prefix_attributes))
390 { store_parm_decls (); }
391 save_filename save_lineno compstmt_or_error
392 { DECL_SOURCE_FILE (current_function_decl) = $7;
393 DECL_SOURCE_LINE (current_function_decl) = $8;
395 POP_DECLSPEC_STACK; }
396 | declspecs_ts setspecs declarator error
397 { POP_DECLSPEC_STACK; }
398 | declspecs_nots setspecs notype_declarator
399 { if (! start_function (current_declspecs, $3,
400 all_prefix_attributes))
404 { store_parm_decls (); }
405 save_filename save_lineno compstmt_or_error
406 { DECL_SOURCE_FILE (current_function_decl) = $7;
407 DECL_SOURCE_LINE (current_function_decl) = $8;
409 POP_DECLSPEC_STACK; }
410 | declspecs_nots setspecs notype_declarator error
411 { POP_DECLSPEC_STACK; }
412 | setspecs notype_declarator
413 { if (! start_function (NULL_TREE, $2,
414 all_prefix_attributes))
418 { store_parm_decls (); }
419 save_filename save_lineno compstmt_or_error
420 { DECL_SOURCE_FILE (current_function_decl) = $6;
421 DECL_SOURCE_LINE (current_function_decl) = $7;
423 POP_DECLSPEC_STACK; }
424 | setspecs notype_declarator error
425 { POP_DECLSPEC_STACK; }
440 { $$ = NEGATE_EXPR; }
444 if (warn_traditional && !in_system_header)
445 warning ("traditional C rejects the unary plus operator");
449 { $$ = PREINCREMENT_EXPR; }
451 { $$ = PREDECREMENT_EXPR; }
453 { $$ = BIT_NOT_EXPR; }
455 { $$ = TRUTH_NOT_EXPR; }
458 expr: nonnull_exprlist
459 { $$ = build_compound_expr ($1); }
470 { $$ = build_tree_list (NULL_TREE, $1); }
471 | nonnull_exprlist ',' expr_no_commas
472 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
477 | '*' cast_expr %prec UNARY
478 { $$ = build_indirect_ref ($2, "unary *"); }
479 /* __extension__ turns off -pedantic for following primary. */
480 | extension cast_expr %prec UNARY
482 RESTORE_WARN_FLAGS ($1); }
483 | unop cast_expr %prec UNARY
484 { $$ = build_unary_op ($1, $2, 0);
485 overflow_warning ($$); }
486 /* Refer to the address of a label as a pointer. */
488 { $$ = finish_label_address_expr ($2); }
489 /* This seems to be impossible on some machines, so let's turn it off.
490 You can use __builtin_next_arg to find the anonymous stack args.
492 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
493 $$ = error_mark_node;
494 if (TREE_VALUE (tree_last (types)) == void_type_node)
495 error ("`&...' used in function with fixed number of arguments");
499 pedwarn ("ISO C forbids `&...'");
500 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
501 $$ = build_unary_op (ADDR_EXPR, $$, 0);
504 | sizeof unary_expr %prec UNARY
506 if (TREE_CODE ($2) == COMPONENT_REF
507 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
508 error ("`sizeof' applied to a bit-field");
509 $$ = c_sizeof (TREE_TYPE ($2)); }
510 | sizeof '(' typename ')' %prec HYPERUNARY
512 $$ = c_sizeof (groktypename ($3)); }
513 | alignof unary_expr %prec UNARY
515 $$ = c_alignof_expr ($2); }
516 | alignof '(' typename ')' %prec HYPERUNARY
518 $$ = c_alignof (groktypename ($3)); }
519 | REALPART cast_expr %prec UNARY
520 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
521 | IMAGPART cast_expr %prec UNARY
522 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
526 SIZEOF { skip_evaluation++; }
530 ALIGNOF { skip_evaluation++; }
535 | '(' typename ')' cast_expr %prec UNARY
536 { $$ = c_cast_expr ($2, $4); }
541 | expr_no_commas '+' expr_no_commas
542 { $$ = parser_build_binary_op ($2, $1, $3); }
543 | expr_no_commas '-' expr_no_commas
544 { $$ = parser_build_binary_op ($2, $1, $3); }
545 | expr_no_commas '*' expr_no_commas
546 { $$ = parser_build_binary_op ($2, $1, $3); }
547 | expr_no_commas '/' expr_no_commas
548 { $$ = parser_build_binary_op ($2, $1, $3); }
549 | expr_no_commas '%' expr_no_commas
550 { $$ = parser_build_binary_op ($2, $1, $3); }
551 | expr_no_commas LSHIFT expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas RSHIFT expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas ARITHCOMPARE expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas EQCOMPARE expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas '&' expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas '|' expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas '^' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas ANDAND
566 { $1 = truthvalue_conversion (default_conversion ($1));
567 skip_evaluation += $1 == boolean_false_node; }
569 { skip_evaluation -= $1 == boolean_false_node;
570 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
571 | expr_no_commas OROR
572 { $1 = truthvalue_conversion (default_conversion ($1));
573 skip_evaluation += $1 == boolean_true_node; }
575 { skip_evaluation -= $1 == boolean_true_node;
576 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
578 { $1 = truthvalue_conversion (default_conversion ($1));
579 skip_evaluation += $1 == boolean_false_node; }
581 { skip_evaluation += (($1 == boolean_true_node)
582 - ($1 == boolean_false_node)); }
584 { skip_evaluation -= $1 == boolean_true_node;
585 $$ = build_conditional_expr ($1, $4, $7); }
588 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
589 /* Make sure first operand is calculated only once. */
590 $<ttype>2 = save_expr ($1);
591 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
592 skip_evaluation += $1 == boolean_true_node; }
594 { skip_evaluation -= $1 == boolean_true_node;
595 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
596 | expr_no_commas '=' expr_no_commas
598 $$ = build_modify_expr ($1, NOP_EXPR, $3);
599 class = TREE_CODE_CLASS (TREE_CODE ($$));
600 if (IS_EXPR_CODE_CLASS (class))
601 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
603 | expr_no_commas ASSIGN expr_no_commas
605 $$ = build_modify_expr ($1, $2, $3);
606 /* This inhibits warnings in truthvalue_conversion. */
607 class = TREE_CODE_CLASS (TREE_CODE ($$));
608 if (IS_EXPR_CODE_CLASS (class))
609 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
616 if (yychar == YYEMPTY)
618 $$ = build_external_ref ($1, yychar == '(');
622 { $$ = combine_strings ($1); }
624 { $$ = fname_decl (C_RID_CODE ($$), $$); }
625 | '(' typename ')' '{'
626 { start_init (NULL_TREE, NULL, 0);
627 $2 = groktypename ($2);
628 really_start_incremental_init ($2); }
629 initlist_maybe_comma '}' %prec UNARY
630 { tree constructor = pop_init_level (0);
634 if (pedantic && ! flag_isoc99)
635 pedwarn ("ISO C89 forbids compound literals");
636 $$ = build_compound_literal (type, constructor);
639 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
640 if (IS_EXPR_CODE_CLASS (class))
641 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
644 { $$ = error_mark_node; }
645 | compstmt_primary_start compstmt_nostart ')'
646 { tree saved_last_tree;
649 pedwarn ("ISO C forbids braced-groups within expressions");
652 saved_last_tree = COMPOUND_BODY ($1);
653 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
654 last_tree = saved_last_tree;
655 TREE_CHAIN (last_tree) = NULL_TREE;
657 last_expr_type = void_type_node;
658 $$ = build1 (STMT_EXPR, last_expr_type, $1);
659 TREE_SIDE_EFFECTS ($$) = 1;
661 | compstmt_primary_start error ')'
664 last_tree = COMPOUND_BODY ($1);
665 TREE_CHAIN (last_tree) = NULL_TREE;
666 $$ = error_mark_node;
668 | primary '(' exprlist ')' %prec '.'
669 { $$ = build_function_call ($1, $3); }
670 | VA_ARG '(' expr_no_commas ',' typename ')'
671 { $$ = build_va_arg ($3, groktypename ($5)); }
672 | primary '[' expr ']' %prec '.'
673 { $$ = build_array_ref ($1, $3); }
674 | primary '.' identifier
677 if (!is_public ($1, $3))
678 $$ = error_mark_node;
681 $$ = build_component_ref ($1, $3);
683 | primary POINTSAT identifier
685 tree expr = build_indirect_ref ($1, "->");
688 if (!is_public (expr, $3))
689 $$ = error_mark_node;
692 $$ = build_component_ref (expr, $3);
695 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
697 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
700 { $$ = build_message_expr ($1); }
702 { $$ = build_selector_expr ($1); }
704 { $$ = build_protocol_expr ($1); }
706 { $$ = build_encode_expr ($1); }
708 { $$ = build_objc_string_object ($1); }
712 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
718 static int last_lineno = 0;
719 static const char *last_input_filename = 0;
721 $$ = chainon ($1, $2);
723 if (warn_traditional && !in_system_header
724 && (lineno != last_lineno || !last_input_filename ||
725 strcmp (last_input_filename, input_filename)))
727 warning ("traditional C rejects string concatenation");
728 last_lineno = lineno;
729 last_input_filename = input_filename;
736 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
737 onto it, which is to be read as an ObjC string object. */
741 | objc_string '@' STRING
742 { $$ = chainon ($1, $3); }
746 old_style_parm_decls:
750 /* ... is used here to indicate a varargs function. */
753 pedwarn ("ISO C does not permit use of `varargs.h'"); }
756 /* The following are analogous to lineno_decl, decls and decl
757 except that they do not allow nested functions.
758 They are used for old-style parm decls. */
760 save_filename save_lineno datadecl
767 | datadecls lineno_datadecl
768 | lineno_datadecl errstmt
771 /* We don't allow prefix attributes here because they cause reduce/reduce
772 conflicts: we can't know whether we're parsing a function decl with
773 attribute suffix, or function defn with attribute prefix on first old
776 declspecs_ts_nosa setspecs initdecls ';'
777 { POP_DECLSPEC_STACK; }
778 | declspecs_nots_nosa setspecs notype_initdecls ';'
779 { POP_DECLSPEC_STACK; }
780 | declspecs_ts_nosa ';'
781 { shadow_tag_warned ($1, 1);
782 pedwarn ("empty declaration"); }
783 | declspecs_nots_nosa ';'
784 { pedwarn ("empty declaration"); }
787 /* This combination which saves a lineno before a decl
788 is the normal thing to use, rather than decl itself.
789 This is to avoid shift/reduce conflicts in contexts
790 where statement labels are allowed. */
792 save_filename save_lineno decl
796 /* records the type and storage class specs to use for processing
797 the declarators that follow.
798 Maintains a stack of outer-level values of current_declspecs,
799 for the sake of parm declarations nested in function declarators. */
800 setspecs: /* empty */
801 { pending_xref_error ();
803 split_specs_attrs ($<ttype>0,
804 ¤t_declspecs, &prefix_attributes);
805 all_prefix_attributes = prefix_attributes; }
808 /* Possibly attributes after a comma, which should reset all_prefix_attributes
809 to prefix_attributes with these ones chained on the front. */
812 { all_prefix_attributes = chainon ($1, prefix_attributes); }
816 declspecs_ts setspecs initdecls ';'
817 { POP_DECLSPEC_STACK; }
818 | declspecs_nots setspecs notype_initdecls ';'
819 { POP_DECLSPEC_STACK; }
820 | declspecs_ts setspecs nested_function
821 { POP_DECLSPEC_STACK; }
822 | declspecs_nots setspecs notype_nested_function
823 { POP_DECLSPEC_STACK; }
827 { RESTORE_WARN_FLAGS ($1); }
830 /* A list of declaration specifiers. These are:
832 - Storage class specifiers (SCSPEC), which for GCC currently include
833 function specifiers ("inline").
835 - Type specifiers (typespec_*).
837 - Type qualifiers (TYPE_QUAL).
839 - Attribute specifier lists (attributes).
841 These are stored as a TREE_LIST; the head of the list is the last
842 item in the specifier list. Each entry in the list has either a
843 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
844 is a single other specifier or qualifier; and a TREE_CHAIN that is the
845 rest of the list. TREE_STATIC is set on the list if something other
846 than a storage class specifier or attribute has been seen; this is used
847 to warn for the obsolescent usage of storage class specifiers other than
848 at the start of the list. (Doing this properly would require function
849 specifiers to be handled separately from storage class specifiers.)
851 The various cases below are classified according to:
853 (a) Whether a storage class specifier is included or not; some
854 places in the grammar disallow storage class specifiers (_sc or _nosc).
856 (b) Whether a type specifier has been seen; after a type specifier,
857 a typedef name is an identifier to redeclare (_ts or _nots).
859 (c) Whether the list starts with an attribute; in certain places,
860 the grammar requires specifiers that don't start with an attribute
863 (d) Whether the list ends with an attribute (or a specifier such that
864 any following attribute would have been parsed as part of that specifier);
865 this avoids shift-reduce conflicts in the parsing of attributes
870 (i) Distinguish between function specifiers and storage class specifiers,
871 at least for the purpose of warnings about obsolescent usage.
873 (ii) Halve the number of productions here by eliminating the _sc/_nosc
874 distinction and instead checking where required that storage class
875 specifiers aren't present. */
877 /* Declspecs which contain at least one type specifier or typedef name.
878 (Just `const' or `volatile' is not enough.)
879 A typedef'd name following these is taken as a name to be declared.
880 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
882 declspecs_nosc_nots_nosa_noea:
884 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
885 TREE_STATIC ($$) = 1; }
886 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
887 { $$ = tree_cons (NULL_TREE, $2, $1);
888 TREE_STATIC ($$) = 1; }
889 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
890 { $$ = tree_cons (NULL_TREE, $2, $1);
891 TREE_STATIC ($$) = 1; }
894 declspecs_nosc_nots_nosa_ea:
895 declspecs_nosc_nots_nosa_noea attributes
896 { $$ = tree_cons ($2, NULL_TREE, $1);
897 TREE_STATIC ($$) = TREE_STATIC ($1); }
900 declspecs_nosc_nots_sa_noea:
901 declspecs_nosc_nots_sa_noea TYPE_QUAL
902 { $$ = tree_cons (NULL_TREE, $2, $1);
903 TREE_STATIC ($$) = 1; }
904 | declspecs_nosc_nots_sa_ea TYPE_QUAL
905 { $$ = tree_cons (NULL_TREE, $2, $1);
906 TREE_STATIC ($$) = 1; }
909 declspecs_nosc_nots_sa_ea:
911 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
912 TREE_STATIC ($$) = 0; }
913 | declspecs_nosc_nots_sa_noea attributes
914 { $$ = tree_cons ($2, NULL_TREE, $1);
915 TREE_STATIC ($$) = TREE_STATIC ($1); }
918 declspecs_nosc_ts_nosa_noea:
920 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
921 TREE_STATIC ($$) = 1; }
922 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
923 { $$ = tree_cons (NULL_TREE, $2, $1);
924 TREE_STATIC ($$) = 1; }
925 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
926 { $$ = tree_cons (NULL_TREE, $2, $1);
927 TREE_STATIC ($$) = 1; }
928 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
929 { $$ = tree_cons (NULL_TREE, $2, $1);
930 TREE_STATIC ($$) = 1; }
931 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
932 { $$ = tree_cons (NULL_TREE, $2, $1);
933 TREE_STATIC ($$) = 1; }
934 | declspecs_nosc_nots_nosa_noea typespec_nonattr
935 { $$ = tree_cons (NULL_TREE, $2, $1);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_nots_nosa_ea typespec_nonattr
938 { $$ = tree_cons (NULL_TREE, $2, $1);
939 TREE_STATIC ($$) = 1; }
942 declspecs_nosc_ts_nosa_ea:
944 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_ts_nosa_noea attributes
947 { $$ = tree_cons ($2, NULL_TREE, $1);
948 TREE_STATIC ($$) = TREE_STATIC ($1); }
949 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
950 { $$ = tree_cons (NULL_TREE, $2, $1);
951 TREE_STATIC ($$) = 1; }
952 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
953 { $$ = tree_cons (NULL_TREE, $2, $1);
954 TREE_STATIC ($$) = 1; }
955 | declspecs_nosc_nots_nosa_noea typespec_attr
956 { $$ = tree_cons (NULL_TREE, $2, $1);
957 TREE_STATIC ($$) = 1; }
958 | declspecs_nosc_nots_nosa_ea typespec_attr
959 { $$ = tree_cons (NULL_TREE, $2, $1);
960 TREE_STATIC ($$) = 1; }
963 declspecs_nosc_ts_sa_noea:
964 declspecs_nosc_ts_sa_noea TYPE_QUAL
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_ts_sa_ea TYPE_QUAL
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
970 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
971 { $$ = tree_cons (NULL_TREE, $2, $1);
972 TREE_STATIC ($$) = 1; }
973 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
974 { $$ = tree_cons (NULL_TREE, $2, $1);
975 TREE_STATIC ($$) = 1; }
976 | declspecs_nosc_nots_sa_noea typespec_nonattr
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_nots_sa_ea typespec_nonattr
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
984 declspecs_nosc_ts_sa_ea:
985 declspecs_nosc_ts_sa_noea attributes
986 { $$ = tree_cons ($2, NULL_TREE, $1);
987 TREE_STATIC ($$) = TREE_STATIC ($1); }
988 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
991 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
992 { $$ = tree_cons (NULL_TREE, $2, $1);
993 TREE_STATIC ($$) = 1; }
994 | declspecs_nosc_nots_sa_noea typespec_attr
995 { $$ = tree_cons (NULL_TREE, $2, $1);
996 TREE_STATIC ($$) = 1; }
997 | declspecs_nosc_nots_sa_ea typespec_attr
998 { $$ = tree_cons (NULL_TREE, $2, $1);
999 TREE_STATIC ($$) = 1; }
1002 declspecs_sc_nots_nosa_noea:
1004 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1005 TREE_STATIC ($$) = 0; }
1006 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1007 { $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = 1; }
1009 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1010 { $$ = tree_cons (NULL_TREE, $2, $1);
1011 TREE_STATIC ($$) = 1; }
1012 | declspecs_nosc_nots_nosa_noea SCSPEC
1013 { if (extra_warnings && TREE_STATIC ($1))
1014 warning ("`%s' is not at beginning of declaration",
1015 IDENTIFIER_POINTER ($2));
1016 $$ = tree_cons (NULL_TREE, $2, $1);
1017 TREE_STATIC ($$) = TREE_STATIC ($1); }
1018 | declspecs_nosc_nots_nosa_ea SCSPEC
1019 { if (extra_warnings && TREE_STATIC ($1))
1020 warning ("`%s' is not at beginning of declaration",
1021 IDENTIFIER_POINTER ($2));
1022 $$ = tree_cons (NULL_TREE, $2, $1);
1023 TREE_STATIC ($$) = TREE_STATIC ($1); }
1024 | declspecs_sc_nots_nosa_noea SCSPEC
1025 { if (extra_warnings && TREE_STATIC ($1))
1026 warning ("`%s' is not at beginning of declaration",
1027 IDENTIFIER_POINTER ($2));
1028 $$ = tree_cons (NULL_TREE, $2, $1);
1029 TREE_STATIC ($$) = TREE_STATIC ($1); }
1030 | declspecs_sc_nots_nosa_ea SCSPEC
1031 { if (extra_warnings && TREE_STATIC ($1))
1032 warning ("`%s' is not at beginning of declaration",
1033 IDENTIFIER_POINTER ($2));
1034 $$ = tree_cons (NULL_TREE, $2, $1);
1035 TREE_STATIC ($$) = TREE_STATIC ($1); }
1038 declspecs_sc_nots_nosa_ea:
1039 declspecs_sc_nots_nosa_noea attributes
1040 { $$ = tree_cons ($2, NULL_TREE, $1);
1041 TREE_STATIC ($$) = TREE_STATIC ($1); }
1044 declspecs_sc_nots_sa_noea:
1045 declspecs_sc_nots_sa_noea TYPE_QUAL
1046 { $$ = tree_cons (NULL_TREE, $2, $1);
1047 TREE_STATIC ($$) = 1; }
1048 | declspecs_sc_nots_sa_ea TYPE_QUAL
1049 { $$ = tree_cons (NULL_TREE, $2, $1);
1050 TREE_STATIC ($$) = 1; }
1051 | declspecs_nosc_nots_sa_noea SCSPEC
1052 { if (extra_warnings && TREE_STATIC ($1))
1053 warning ("`%s' is not at beginning of declaration",
1054 IDENTIFIER_POINTER ($2));
1055 $$ = tree_cons (NULL_TREE, $2, $1);
1056 TREE_STATIC ($$) = TREE_STATIC ($1); }
1057 | declspecs_nosc_nots_sa_ea SCSPEC
1058 { if (extra_warnings && TREE_STATIC ($1))
1059 warning ("`%s' is not at beginning of declaration",
1060 IDENTIFIER_POINTER ($2));
1061 $$ = tree_cons (NULL_TREE, $2, $1);
1062 TREE_STATIC ($$) = TREE_STATIC ($1); }
1063 | declspecs_sc_nots_sa_noea SCSPEC
1064 { if (extra_warnings && TREE_STATIC ($1))
1065 warning ("`%s' is not at beginning of declaration",
1066 IDENTIFIER_POINTER ($2));
1067 $$ = tree_cons (NULL_TREE, $2, $1);
1068 TREE_STATIC ($$) = TREE_STATIC ($1); }
1069 | declspecs_sc_nots_sa_ea SCSPEC
1070 { if (extra_warnings && TREE_STATIC ($1))
1071 warning ("`%s' is not at beginning of declaration",
1072 IDENTIFIER_POINTER ($2));
1073 $$ = tree_cons (NULL_TREE, $2, $1);
1074 TREE_STATIC ($$) = TREE_STATIC ($1); }
1077 declspecs_sc_nots_sa_ea:
1078 declspecs_sc_nots_sa_noea attributes
1079 { $$ = tree_cons ($2, NULL_TREE, $1);
1080 TREE_STATIC ($$) = TREE_STATIC ($1); }
1083 declspecs_sc_ts_nosa_noea:
1084 declspecs_sc_ts_nosa_noea TYPE_QUAL
1085 { $$ = tree_cons (NULL_TREE, $2, $1);
1086 TREE_STATIC ($$) = 1; }
1087 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1088 { $$ = tree_cons (NULL_TREE, $2, $1);
1089 TREE_STATIC ($$) = 1; }
1090 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1091 { $$ = tree_cons (NULL_TREE, $2, $1);
1092 TREE_STATIC ($$) = 1; }
1093 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1094 { $$ = tree_cons (NULL_TREE, $2, $1);
1095 TREE_STATIC ($$) = 1; }
1096 | declspecs_sc_nots_nosa_noea typespec_nonattr
1097 { $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = 1; }
1099 | declspecs_sc_nots_nosa_ea typespec_nonattr
1100 { $$ = tree_cons (NULL_TREE, $2, $1);
1101 TREE_STATIC ($$) = 1; }
1102 | declspecs_nosc_ts_nosa_noea SCSPEC
1103 { if (extra_warnings && TREE_STATIC ($1))
1104 warning ("`%s' is not at beginning of declaration",
1105 IDENTIFIER_POINTER ($2));
1106 $$ = tree_cons (NULL_TREE, $2, $1);
1107 TREE_STATIC ($$) = TREE_STATIC ($1); }
1108 | declspecs_nosc_ts_nosa_ea SCSPEC
1109 { if (extra_warnings && TREE_STATIC ($1))
1110 warning ("`%s' is not at beginning of declaration",
1111 IDENTIFIER_POINTER ($2));
1112 $$ = tree_cons (NULL_TREE, $2, $1);
1113 TREE_STATIC ($$) = TREE_STATIC ($1); }
1114 | declspecs_sc_ts_nosa_noea SCSPEC
1115 { if (extra_warnings && TREE_STATIC ($1))
1116 warning ("`%s' is not at beginning of declaration",
1117 IDENTIFIER_POINTER ($2));
1118 $$ = tree_cons (NULL_TREE, $2, $1);
1119 TREE_STATIC ($$) = TREE_STATIC ($1); }
1120 | declspecs_sc_ts_nosa_ea SCSPEC
1121 { if (extra_warnings && TREE_STATIC ($1))
1122 warning ("`%s' is not at beginning of declaration",
1123 IDENTIFIER_POINTER ($2));
1124 $$ = tree_cons (NULL_TREE, $2, $1);
1125 TREE_STATIC ($$) = TREE_STATIC ($1); }
1128 declspecs_sc_ts_nosa_ea:
1129 declspecs_sc_ts_nosa_noea attributes
1130 { $$ = tree_cons ($2, NULL_TREE, $1);
1131 TREE_STATIC ($$) = TREE_STATIC ($1); }
1132 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1133 { $$ = tree_cons (NULL_TREE, $2, $1);
1134 TREE_STATIC ($$) = 1; }
1135 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1136 { $$ = tree_cons (NULL_TREE, $2, $1);
1137 TREE_STATIC ($$) = 1; }
1138 | declspecs_sc_nots_nosa_noea typespec_attr
1139 { $$ = tree_cons (NULL_TREE, $2, $1);
1140 TREE_STATIC ($$) = 1; }
1141 | declspecs_sc_nots_nosa_ea typespec_attr
1142 { $$ = tree_cons (NULL_TREE, $2, $1);
1143 TREE_STATIC ($$) = 1; }
1146 declspecs_sc_ts_sa_noea:
1147 declspecs_sc_ts_sa_noea TYPE_QUAL
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_ts_sa_ea TYPE_QUAL
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1153 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1154 { $$ = tree_cons (NULL_TREE, $2, $1);
1155 TREE_STATIC ($$) = 1; }
1156 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1157 { $$ = tree_cons (NULL_TREE, $2, $1);
1158 TREE_STATIC ($$) = 1; }
1159 | declspecs_sc_nots_sa_noea typespec_nonattr
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_nots_sa_ea typespec_nonattr
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_nosc_ts_sa_noea SCSPEC
1166 { if (extra_warnings && TREE_STATIC ($1))
1167 warning ("`%s' is not at beginning of declaration",
1168 IDENTIFIER_POINTER ($2));
1169 $$ = tree_cons (NULL_TREE, $2, $1);
1170 TREE_STATIC ($$) = TREE_STATIC ($1); }
1171 | declspecs_nosc_ts_sa_ea SCSPEC
1172 { if (extra_warnings && TREE_STATIC ($1))
1173 warning ("`%s' is not at beginning of declaration",
1174 IDENTIFIER_POINTER ($2));
1175 $$ = tree_cons (NULL_TREE, $2, $1);
1176 TREE_STATIC ($$) = TREE_STATIC ($1); }
1177 | declspecs_sc_ts_sa_noea SCSPEC
1178 { if (extra_warnings && TREE_STATIC ($1))
1179 warning ("`%s' is not at beginning of declaration",
1180 IDENTIFIER_POINTER ($2));
1181 $$ = tree_cons (NULL_TREE, $2, $1);
1182 TREE_STATIC ($$) = TREE_STATIC ($1); }
1183 | declspecs_sc_ts_sa_ea SCSPEC
1184 { if (extra_warnings && TREE_STATIC ($1))
1185 warning ("`%s' is not at beginning of declaration",
1186 IDENTIFIER_POINTER ($2));
1187 $$ = tree_cons (NULL_TREE, $2, $1);
1188 TREE_STATIC ($$) = TREE_STATIC ($1); }
1191 declspecs_sc_ts_sa_ea:
1192 declspecs_sc_ts_sa_noea attributes
1193 { $$ = tree_cons ($2, NULL_TREE, $1);
1194 TREE_STATIC ($$) = TREE_STATIC ($1); }
1195 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1196 { $$ = tree_cons (NULL_TREE, $2, $1);
1197 TREE_STATIC ($$) = 1; }
1198 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1199 { $$ = tree_cons (NULL_TREE, $2, $1);
1200 TREE_STATIC ($$) = 1; }
1201 | declspecs_sc_nots_sa_noea typespec_attr
1202 { $$ = tree_cons (NULL_TREE, $2, $1);
1203 TREE_STATIC ($$) = 1; }
1204 | declspecs_sc_nots_sa_ea typespec_attr
1205 { $$ = tree_cons (NULL_TREE, $2, $1);
1206 TREE_STATIC ($$) = 1; }
1209 /* Particular useful classes of declspecs. */
1211 declspecs_nosc_ts_nosa_noea
1212 | declspecs_nosc_ts_nosa_ea
1213 | declspecs_nosc_ts_sa_noea
1214 | declspecs_nosc_ts_sa_ea
1215 | declspecs_sc_ts_nosa_noea
1216 | declspecs_sc_ts_nosa_ea
1217 | declspecs_sc_ts_sa_noea
1218 | declspecs_sc_ts_sa_ea
1222 declspecs_nosc_nots_nosa_noea
1223 | declspecs_nosc_nots_nosa_ea
1224 | declspecs_nosc_nots_sa_noea
1225 | declspecs_nosc_nots_sa_ea
1226 | declspecs_sc_nots_nosa_noea
1227 | declspecs_sc_nots_nosa_ea
1228 | declspecs_sc_nots_sa_noea
1229 | declspecs_sc_nots_sa_ea
1233 declspecs_nosc_ts_nosa_noea
1234 | declspecs_nosc_ts_nosa_ea
1235 | declspecs_sc_ts_nosa_noea
1236 | declspecs_sc_ts_nosa_ea
1239 declspecs_nots_nosa:
1240 declspecs_nosc_nots_nosa_noea
1241 | declspecs_nosc_nots_nosa_ea
1242 | declspecs_sc_nots_nosa_noea
1243 | declspecs_sc_nots_nosa_ea
1247 declspecs_nosc_ts_nosa_noea
1248 | declspecs_nosc_ts_nosa_ea
1249 | declspecs_nosc_ts_sa_noea
1250 | declspecs_nosc_ts_sa_ea
1253 declspecs_nosc_nots:
1254 declspecs_nosc_nots_nosa_noea
1255 | declspecs_nosc_nots_nosa_ea
1256 | declspecs_nosc_nots_sa_noea
1257 | declspecs_nosc_nots_sa_ea
1261 declspecs_nosc_ts_nosa_noea
1262 | declspecs_nosc_ts_nosa_ea
1263 | declspecs_nosc_ts_sa_noea
1264 | declspecs_nosc_ts_sa_ea
1265 | declspecs_nosc_nots_nosa_noea
1266 | declspecs_nosc_nots_nosa_ea
1267 | declspecs_nosc_nots_sa_noea
1268 | declspecs_nosc_nots_sa_ea
1272 declspecs_nosc_nots_nosa_noea
1273 | declspecs_nosc_nots_nosa_ea
1274 | declspecs_nosc_nots_sa_noea
1275 | declspecs_nosc_nots_sa_ea
1276 | declspecs_nosc_ts_nosa_noea
1277 | declspecs_nosc_ts_nosa_ea
1278 | declspecs_nosc_ts_sa_noea
1279 | declspecs_nosc_ts_sa_ea
1280 | declspecs_sc_nots_nosa_noea
1281 | declspecs_sc_nots_nosa_ea
1282 | declspecs_sc_nots_sa_noea
1283 | declspecs_sc_nots_sa_ea
1284 | declspecs_sc_ts_nosa_noea
1285 | declspecs_sc_ts_nosa_ea
1286 | declspecs_sc_ts_sa_noea
1287 | declspecs_sc_ts_sa_ea
1290 /* A (possibly empty) sequence of type qualifiers and attributes. */
1291 maybe_type_quals_attrs:
1294 | declspecs_nosc_nots
1298 /* A type specifier (but not a type qualifier).
1299 Once we have seen one of these in a declaration,
1300 if a typedef name appears then it is being redeclared.
1302 The _reserved versions start with a reserved word and may appear anywhere
1303 in the declaration specifiers; the _nonreserved versions may only
1304 appear before any other type specifiers, and after that are (if names)
1307 FIXME: should the _nonreserved version be restricted to names being
1308 redeclared only? The other entries there relate only the GNU extensions
1309 and Objective C, and are historically parsed thus, and don't make sense
1310 after other type specifiers, but it might be cleaner to count them as
1313 _attr means: specifiers that either end with attributes,
1314 or are such that any following attributes would
1315 be parsed as part of the specifier.
1317 _nonattr: specifiers. */
1320 typespec_reserved_nonattr
1321 | typespec_nonreserved_nonattr
1325 typespec_reserved_attr
1328 typespec_reserved_nonattr:
1330 { OBJC_NEED_RAW_IDENTIFIER (1); }
1334 typespec_reserved_attr:
1338 typespec_nonreserved_nonattr:
1340 { /* For a typedef name, record the meaning, not the name.
1341 In case of `foo foo, bar;'. */
1342 $$ = lookup_name ($1); }
1344 | CLASSNAME protocolrefs
1345 { $$ = get_static_reference ($1, $2); }
1346 | OBJECTNAME protocolrefs
1347 { $$ = get_object_reference ($2); }
1349 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1350 - nisse@lysator.liu.se */
1351 | non_empty_protocolrefs
1352 { $$ = get_object_reference ($1); }
1354 | TYPEOF '(' expr ')'
1355 { $$ = TREE_TYPE ($3); }
1356 | TYPEOF '(' typename ')'
1357 { $$ = groktypename ($3); }
1360 /* typespec_nonreserved_attr does not exist. */
1364 | initdecls ',' maybe_resetattrs initdcl
1369 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1375 | ASM_KEYWORD '(' string ')'
1376 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1382 declarator maybeasm maybe_attribute '='
1383 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1384 chainon ($3, all_prefix_attributes));
1385 start_init ($<ttype>$, $2, global_bindings_p ()); }
1387 /* Note how the declaration of the variable is in effect while its init is parsed! */
1389 finish_decl ($<ttype>5, $6, $2); }
1390 | declarator maybeasm maybe_attribute
1391 { tree d = start_decl ($1, current_declspecs, 0,
1392 chainon ($3, all_prefix_attributes));
1393 finish_decl (d, NULL_TREE, $2);
1398 notype_declarator maybeasm maybe_attribute '='
1399 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1400 chainon ($3, all_prefix_attributes));
1401 start_init ($<ttype>$, $2, global_bindings_p ()); }
1403 /* Note how the declaration of the variable is in effect while its init is parsed! */
1405 finish_decl ($<ttype>5, $6, $2); }
1406 | notype_declarator maybeasm maybe_attribute
1407 { tree d = start_decl ($1, current_declspecs, 0,
1408 chainon ($3, all_prefix_attributes));
1409 finish_decl (d, NULL_TREE, $2); }
1411 /* the * rules are dummies to accept the Apollo extended syntax
1412 so that the header files compile. */
1423 | attributes attribute
1424 { $$ = chainon ($1, $2); }
1428 ATTRIBUTE '(' '(' attribute_list ')' ')'
1435 | attribute_list ',' attrib
1436 { $$ = chainon ($1, $3); }
1443 { $$ = build_tree_list ($1, NULL_TREE); }
1444 | any_word '(' IDENTIFIER ')'
1445 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1446 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1447 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1448 | any_word '(' exprlist ')'
1449 { $$ = build_tree_list ($1, $3); }
1452 /* This still leaves out most reserved keywords,
1453 shouldn't we include them? */
1462 /* Initializers. `init' is the entry point. */
1467 { really_start_incremental_init (NULL_TREE); }
1468 initlist_maybe_comma '}'
1469 { $$ = pop_init_level (0); }
1471 { $$ = error_mark_node; }
1474 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1475 initlist_maybe_comma:
1478 pedwarn ("ISO C forbids empty initializer braces"); }
1479 | initlist1 maybecomma
1484 | initlist1 ',' initelt
1487 /* `initelt' is a single element of an initializer.
1488 It may use braces. */
1490 designator_list '=' initval
1491 { if (pedantic && ! flag_isoc99)
1492 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1493 | designator initval
1495 pedwarn ("obsolete use of designated initializer without `='"); }
1497 { set_init_label ($1);
1499 pedwarn ("obsolete use of designated initializer with `:'"); }
1506 { push_init_level (0); }
1507 initlist_maybe_comma '}'
1508 { process_init_element (pop_init_level (0)); }
1510 { process_init_element ($1); }
1516 | designator_list designator
1521 { set_init_label ($2); }
1522 /* These are for labeled elements. The syntax for an array element
1523 initializer conflicts with the syntax for an Objective-C message,
1524 so don't include these productions in the Objective-C grammar. */
1526 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1527 { set_init_index ($2, $4);
1529 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1530 | '[' expr_no_commas ']'
1531 { set_init_index ($2, NULL_TREE); }
1538 pedwarn ("ISO C forbids nested functions");
1540 push_function_context ();
1541 if (! start_function (current_declspecs, $1,
1542 all_prefix_attributes))
1544 pop_function_context ();
1548 old_style_parm_decls
1549 { store_parm_decls (); }
1550 /* This used to use compstmt_or_error.
1551 That caused a bug with input `f(g) int g {}',
1552 where the use of YYERROR1 above caused an error
1553 which then was handled by compstmt_or_error.
1554 There followed a repeated execution of that same rule,
1555 which called YYERROR1 again, and so on. */
1556 save_filename save_lineno compstmt
1557 { tree decl = current_function_decl;
1558 DECL_SOURCE_FILE (decl) = $5;
1559 DECL_SOURCE_LINE (decl) = $6;
1560 finish_function (1);
1561 pop_function_context ();
1562 add_decl_stmt (decl); }
1565 notype_nested_function:
1568 pedwarn ("ISO C forbids nested functions");
1570 push_function_context ();
1571 if (! start_function (current_declspecs, $1,
1572 all_prefix_attributes))
1574 pop_function_context ();
1578 old_style_parm_decls
1579 { store_parm_decls (); }
1580 /* This used to use compstmt_or_error.
1581 That caused a bug with input `f(g) int g {}',
1582 where the use of YYERROR1 above caused an error
1583 which then was handled by compstmt_or_error.
1584 There followed a repeated execution of that same rule,
1585 which called YYERROR1 again, and so on. */
1586 save_filename save_lineno compstmt
1587 { tree decl = current_function_decl;
1588 DECL_SOURCE_FILE (decl) = $5;
1589 DECL_SOURCE_LINE (decl) = $6;
1590 finish_function (1);
1591 pop_function_context ();
1592 add_decl_stmt (decl); }
1595 /* Any kind of declarator (thus, all declarators allowed
1596 after an explicit typespec). */
1599 after_type_declarator
1603 /* A declarator that is allowed only after an explicit typespec. */
1605 after_type_declarator:
1606 '(' maybe_attribute after_type_declarator ')'
1607 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1608 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1609 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1610 /* | after_type_declarator '(' error ')' %prec '.'
1611 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1612 poplevel (0, 0, 0); } */
1613 | after_type_declarator array_declarator %prec '.'
1614 { $$ = set_array_declarator_type ($2, $1, 0); }
1615 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1616 { $$ = make_pointer_declarator ($2, $3); }
1623 /* Kinds of declarator that can appear in a parameter list
1624 in addition to notype_declarator. This is like after_type_declarator
1625 but does not allow a typedef name in parentheses as an identifier
1626 (because it would conflict with a function with that typedef as arg). */
1628 parm_declarator_starttypename
1629 | parm_declarator_nostarttypename
1632 parm_declarator_starttypename:
1633 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1634 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1635 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1636 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1637 poplevel (0, 0, 0); } */
1638 | parm_declarator_starttypename array_declarator %prec '.'
1639 { $$ = set_array_declarator_type ($2, $1, 0); }
1646 parm_declarator_nostarttypename:
1647 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1648 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1649 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1650 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1651 poplevel (0, 0, 0); } */
1652 | parm_declarator_nostarttypename array_declarator %prec '.'
1653 { $$ = set_array_declarator_type ($2, $1, 0); }
1654 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1655 { $$ = make_pointer_declarator ($2, $3); }
1656 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1657 { $$ = make_pointer_declarator ($2, $3); }
1658 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1659 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1662 /* A declarator allowed whether or not there has been
1663 an explicit typespec. These cannot redeclare a typedef-name. */
1666 notype_declarator '(' parmlist_or_identifiers %prec '.'
1667 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1668 /* | notype_declarator '(' error ')' %prec '.'
1669 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1670 poplevel (0, 0, 0); } */
1671 | '(' maybe_attribute notype_declarator ')'
1672 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1673 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1674 { $$ = make_pointer_declarator ($2, $3); }
1675 | notype_declarator array_declarator %prec '.'
1676 { $$ = set_array_declarator_type ($2, $1, 0); }
1701 /* structsp_attr: struct/union/enum specifiers that either
1702 end with attributes, or are such that any following attributes would
1703 be parsed as part of the struct/union/enum specifier.
1705 structsp_nonattr: other struct/union/enum specifiers. */
1708 struct_head identifier '{'
1709 { $$ = start_struct (RECORD_TYPE, $2);
1710 /* Start scope of tag before parsing components. */
1712 component_decl_list '}' maybe_attribute
1713 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1714 | struct_head '{' component_decl_list '}' maybe_attribute
1715 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1716 $3, chainon ($1, $5));
1718 | union_head identifier '{'
1719 { $$ = start_struct (UNION_TYPE, $2); }
1720 component_decl_list '}' maybe_attribute
1721 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1722 | union_head '{' component_decl_list '}' maybe_attribute
1723 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1724 $3, chainon ($1, $5));
1726 | enum_head identifier '{'
1727 { $$ = start_enum ($2); }
1728 enumlist maybecomma_warn '}' maybe_attribute
1729 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1730 chainon ($1, $8)); }
1732 { $$ = start_enum (NULL_TREE); }
1733 enumlist maybecomma_warn '}' maybe_attribute
1734 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1735 chainon ($1, $7)); }
1739 struct_head identifier
1740 { $$ = xref_tag (RECORD_TYPE, $2); }
1741 | union_head identifier
1742 { $$ = xref_tag (UNION_TYPE, $2); }
1743 | enum_head identifier
1744 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1745 /* In ISO C, enumerated types can be referred to
1746 only if already defined. */
1747 if (pedantic && !COMPLETE_TYPE_P ($$))
1748 pedwarn ("ISO C forbids forward references to `enum' types"); }
1759 { if (pedantic && ! flag_isoc99)
1760 pedwarn ("comma at end of enumerator list"); }
1763 component_decl_list:
1764 component_decl_list2
1766 | component_decl_list2 component_decl
1767 { $$ = chainon ($1, $2);
1768 pedwarn ("no semicolon at end of struct or union"); }
1771 component_decl_list2: /* empty */
1773 | component_decl_list2 component_decl ';'
1774 { $$ = chainon ($1, $2); }
1775 | component_decl_list2 ';'
1777 pedwarn ("extra semicolon in struct or union specified"); }
1779 /* foo(sizeof(struct{ @defs(ClassName)})); */
1780 | DEFS '(' CLASSNAME ')'
1782 tree interface = lookup_interface ($3);
1785 $$ = get_class_ivars (interface);
1788 error ("cannot find interface declaration for `%s'",
1789 IDENTIFIER_POINTER ($3));
1797 declspecs_nosc_ts setspecs components
1799 POP_DECLSPEC_STACK; }
1800 | declspecs_nosc_ts setspecs save_filename save_lineno
1802 /* Support for unnamed structs or unions as members of
1803 structs or unions (which is [a] useful and [b] supports
1806 pedwarn ("ISO C doesn't support unnamed structs/unions");
1808 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1809 POP_DECLSPEC_STACK; }
1810 | declspecs_nosc_nots setspecs components_notype
1812 POP_DECLSPEC_STACK; }
1813 | declspecs_nosc_nots
1815 pedwarn ("ISO C forbids member declarations with no members");
1820 | extension component_decl
1822 RESTORE_WARN_FLAGS ($1); }
1826 component_declarator
1827 | components ',' maybe_resetattrs component_declarator
1828 { $$ = chainon ($1, $4); }
1832 component_notype_declarator
1833 | components_notype ',' maybe_resetattrs component_notype_declarator
1834 { $$ = chainon ($1, $4); }
1837 component_declarator:
1838 save_filename save_lineno declarator maybe_attribute
1839 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1840 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1841 | save_filename save_lineno
1842 declarator ':' expr_no_commas maybe_attribute
1843 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1844 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1845 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1846 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1847 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1850 component_notype_declarator:
1851 save_filename save_lineno notype_declarator maybe_attribute
1852 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1853 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1854 | save_filename save_lineno
1855 notype_declarator ':' expr_no_commas maybe_attribute
1856 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1857 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1858 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1859 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1860 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1863 /* We chain the enumerators in reverse order.
1864 They are put in forward order where enumlist is used.
1865 (The order used to be significant, but no longer is so.
1866 However, we still maintain the order, just to be clean.) */
1870 | enumlist ',' enumerator
1871 { if ($1 == error_mark_node)
1874 $$ = chainon ($3, $1); }
1876 { $$ = error_mark_node; }
1882 { $$ = build_enumerator ($1, NULL_TREE); }
1883 | identifier '=' expr_no_commas
1884 { $$ = build_enumerator ($1, $3); }
1889 { tree specs, attrs;
1890 pending_xref_error ();
1891 split_specs_attrs ($1, &specs, &attrs);
1892 /* We don't yet support attributes here. */
1893 if (attrs != NULL_TREE)
1894 warning ("attributes on type name ignored");
1895 $<ttype>$ = specs; }
1897 { $$ = build_tree_list ($<ttype>2, $3); }
1900 absdcl: /* an absolute declarator */
1906 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1908 { $$ = build_tree_list (build_tree_list (current_declspecs,
1910 all_prefix_attributes); }
1912 { $$ = build_tree_list (build_tree_list (current_declspecs,
1914 all_prefix_attributes); }
1915 | absdcl1_noea attributes
1916 { $$ = build_tree_list (build_tree_list (current_declspecs,
1918 chainon ($2, all_prefix_attributes)); }
1921 absdcl1: /* a nonempty absolute declarator */
1928 | '*' maybe_type_quals_attrs absdcl1_noea
1929 { $$ = make_pointer_declarator ($2, $3); }
1933 '*' maybe_type_quals_attrs
1934 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1935 | '*' maybe_type_quals_attrs absdcl1_ea
1936 { $$ = make_pointer_declarator ($2, $3); }
1940 '(' maybe_attribute absdcl1 ')'
1941 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1942 | direct_absdcl1 '(' parmlist
1943 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1944 | direct_absdcl1 array_declarator
1945 { $$ = set_array_declarator_type ($2, $1, 1); }
1947 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1949 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1952 /* The [...] part of a declarator for an array type. */
1956 { $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
1957 | '[' declspecs_nosc expr ']'
1958 { $$ = build_array_declarator ($3, $2, 0, 0); }
1960 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
1961 | '[' declspecs_nosc ']'
1962 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1964 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
1965 | '[' declspecs_nosc '*' ']'
1966 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1967 | '[' SCSPEC expr ']'
1968 { if (C_RID_CODE ($2) != RID_STATIC)
1969 error ("storage class specifier in array declarator");
1970 $$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
1971 | '[' SCSPEC declspecs_nosc expr ']'
1972 { if (C_RID_CODE ($2) != RID_STATIC)
1973 error ("storage class specifier in array declarator");
1974 $$ = build_array_declarator ($4, $3, 1, 0); }
1975 | '[' declspecs_nosc SCSPEC expr ']'
1976 { if (C_RID_CODE ($3) != RID_STATIC)
1977 error ("storage class specifier in array declarator");
1978 $$ = build_array_declarator ($4, $2, 1, 0); }
1981 /* A nonempty series of declarations and statements (possibly followed by
1982 some labels) that can form the body of a compound statement.
1983 NOTE: we don't allow labels on declarations; this might seem like a
1984 natural extension, but there would be a conflict between attributes
1985 on the label and prefix attributes on the declaration. */
1988 lineno_stmt_decl_or_labels_ending_stmt
1989 | lineno_stmt_decl_or_labels_ending_decl
1990 | lineno_stmt_decl_or_labels_ending_label
1992 pedwarn ("deprecated use of label at end of compound statement");
1994 | lineno_stmt_decl_or_labels_ending_error
1997 lineno_stmt_decl_or_labels_ending_stmt:
1999 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2000 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2001 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2002 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2005 lineno_stmt_decl_or_labels_ending_decl:
2007 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2008 { if (pedantic && !flag_isoc99)
2009 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2010 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2011 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2014 lineno_stmt_decl_or_labels_ending_label:
2016 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2017 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2018 | lineno_stmt_decl_or_labels_ending_label lineno_label
2019 | lineno_stmt_decl_or_labels_ending_error lineno_label
2022 lineno_stmt_decl_or_labels_ending_error:
2024 | lineno_stmt_decl_or_labels errstmt
2027 lineno_stmt_decl_or_labels:
2028 lineno_stmt_decl_or_labels_ending_stmt
2029 | lineno_stmt_decl_or_labels_ending_decl
2030 | lineno_stmt_decl_or_labels_ending_label
2031 | lineno_stmt_decl_or_labels_ending_error
2037 pushlevel: /* empty */
2040 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2042 if (objc_method_context)
2048 poplevel: /* empty */
2049 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2051 /* Start and end blocks created for the new scopes of C99. */
2052 c99_block_start: /* empty */
2055 $$ = c_begin_compound_stmt ();
2058 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2060 if (objc_method_context)
2069 /* Productions using c99_block_start and c99_block_end will need to do what's
2070 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2071 $1 is the value of c99_block_start and $2 of c99_block_end. */
2072 c99_block_end: /* empty */
2075 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2076 $$ = poplevel (kept_level_p (), 0, 0);
2077 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2078 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2085 /* Read zero or more forward-declarations for labels
2086 that nested functions can jump to. */
2091 pedwarn ("ISO C forbids label declarations"); }
2096 | label_decls label_decl
2100 LABEL identifiers_or_typenames ';'
2102 for (link = $2; link; link = TREE_CHAIN (link))
2104 tree label = shadow_label (TREE_VALUE (link));
2105 C_DECLARED_LABEL_FLAG (label) = 1;
2106 add_decl_stmt (label);
2111 /* This is the body of a function definition.
2112 It causes syntax errors to ignore to the next openbrace. */
2119 compstmt_start: '{' { compstmt_count++;
2120 $$ = c_begin_compound_stmt (); }
2122 compstmt_nostart: '}'
2123 { $$ = convert (void_type_node, integer_zero_node); }
2124 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2125 { $$ = poplevel (kept_level_p (), 1, 0);
2126 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2127 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2131 compstmt_contents_nonempty:
2136 compstmt_primary_start:
2138 { if (current_function_decl == 0)
2140 error ("braced-group within expression allowed only inside a function");
2143 /* We must force a BLOCK for this level
2144 so that, if it is not expanded later,
2145 there is a way to turn off the entire subtree of blocks
2146 that are contained in it. */
2148 push_label_level ();
2150 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2153 compstmt: compstmt_start compstmt_nostart
2154 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2158 /* Value is number of statements counted as of the closeparen. */
2160 if_prefix c99_block_lineno_labeled_stmt
2161 { c_finish_then (); }
2162 /* Make sure c_expand_end_cond is run once
2163 for each call to c_expand_start_cond.
2164 Otherwise a crash is likely. */
2170 { c_expand_start_cond (truthvalue_conversion ($3),
2172 $<itype>$ = stmt_count;
2173 if_stmt_file = $<filename>-2;
2174 if_stmt_line = $<lineno>-1; }
2177 /* This is a subroutine of stmt.
2178 It is used twice, once for valid DO statements
2179 and once for catching errors in parsing the end test. */
2185 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2187 /* In the event that a parse error prevents
2188 parsing the complete do-statement, set the
2189 condition now. Otherwise, we can get crashes at
2190 RTL-generation time. */
2191 DO_COND ($<ttype>$) = error_mark_node; }
2192 c99_block_lineno_labeled_stmt WHILE
2194 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2197 /* The forced readahead in here is because we might be at the end of a
2198 line, and the line and file won't be bumped until yylex absorbs the
2199 first token on the next line. */
2201 { if (yychar == YYEMPTY)
2203 $$ = input_filename; }
2207 { if (yychar == YYEMPTY)
2212 lineno_labeled_stmt:
2214 | lineno_label lineno_labeled_stmt
2217 /* Like lineno_labeled_stmt, but a block in C99. */
2218 c99_block_lineno_labeled_stmt:
2219 c99_block_start lineno_labeled_stmt c99_block_end
2221 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2225 save_filename save_lineno stmt
2228 STMT_LINENO ($3) = $2;
2229 /* ??? We currently have no way of recording
2230 the filename for a statement. This probably
2231 matters little in practice at the moment,
2232 but I suspect that problems will occur when
2233 doing inlining at the tree level. */
2239 save_filename save_lineno label
2242 STMT_LINENO ($3) = $2;
2247 select_or_iter_stmt:
2249 { c_expand_start_else ();
2250 $<itype>1 = stmt_count; }
2251 c99_block_lineno_labeled_stmt
2253 c_expand_end_cond ();
2254 if (extra_warnings && stmt_count == $<itype>1)
2255 warning ("empty body in an else-statement"); }
2256 | simple_if %prec IF
2257 { c_expand_end_cond ();
2258 /* This warning is here instead of in simple_if, because we
2259 do not want a warning if an empty if is followed by an
2260 else statement. Increment stmt_count so we don't
2261 give a second error if this is a nested `if'. */
2262 if (extra_warnings && stmt_count++ == $<itype>1)
2263 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2264 "empty body in an if-statement"); }
2265 /* Make sure c_expand_end_cond is run once
2266 for each call to c_expand_start_cond.
2267 Otherwise a crash is likely. */
2268 | simple_if ELSE error
2269 { c_expand_end_cond (); }
2273 { $4 = truthvalue_conversion ($4);
2275 = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
2276 c99_block_lineno_labeled_stmt
2277 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2280 { DO_COND ($1) = truthvalue_conversion ($3); }
2281 | do_stmt_start error
2284 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2285 NULL_TREE, NULL_TREE);
2286 add_stmt ($<ttype>$); }
2289 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2292 FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
2294 { FOR_EXPR ($<ttype>2) = $9; }
2295 c99_block_lineno_labeled_stmt
2296 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2297 | SWITCH '(' expr ')'
2299 $<ttype>$ = c_start_case ($3); }
2300 c99_block_lineno_labeled_stmt
2301 { c_finish_case (); }
2306 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2308 { check_for_loop_decls (); }
2311 /* Parse a single real statement, not including any labels. */
2314 { stmt_count++; $$ = $1; }
2317 $$ = c_expand_expr_stmt ($1); }
2318 | c99_block_start select_or_iter_stmt c99_block_end
2320 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2324 $$ = add_stmt (build_break_stmt ()); }
2327 $$ = add_stmt (build_continue_stmt ()); }
2330 $$ = c_expand_return (NULL_TREE); }
2333 $$ = c_expand_return ($2); }
2334 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2336 $$ = simple_asm_stmt ($4); }
2337 /* This is the case with just output operands. */
2338 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2340 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2341 /* This is the case with input operands as well. */
2342 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2343 asm_operands ')' ';'
2345 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2346 /* This is the case with clobbered registers as well. */
2347 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2348 asm_operands ':' asm_clobbers ')' ';'
2350 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2351 | GOTO identifier ';'
2354 decl = lookup_label ($2);
2357 TREE_USED (decl) = 1;
2358 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2365 pedwarn ("ISO C forbids `goto *expr;'");
2367 $3 = convert (ptr_type_node, $3);
2368 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2373 /* Any kind of label, including jump labels and case labels.
2374 ANSI C accepts labels only before statements, but we allow them
2375 also at the end of a compound statement. */
2377 label: CASE expr_no_commas ':'
2379 $$ = do_case ($2, NULL_TREE); }
2380 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2382 $$ = do_case ($2, $4); }
2385 $$ = do_case (NULL_TREE, NULL_TREE); }
2386 | identifier save_filename save_lineno ':' maybe_attribute
2387 { tree label = define_label ($2, $3, $1);
2391 decl_attributes (&label, $5, 0);
2392 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2399 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2403 { emit_line_note (input_filename, lineno);
2406 { emit_line_note (input_filename, lineno); }
2415 /* These are the operands other than the first string and colon
2416 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2417 asm_operands: /* empty */
2419 | nonnull_asm_operands
2422 nonnull_asm_operands:
2424 | nonnull_asm_operands ',' asm_operand
2425 { $$ = chainon ($1, $3); }
2430 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2431 | '[' identifier ']' STRING '(' expr ')'
2432 { $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2437 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2438 | asm_clobbers ',' string
2439 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2442 /* This is what appears inside the parens in a function declarator.
2443 Its value is a list of ..._TYPE nodes. Attributes must appear here
2444 to avoid a conflict with their appearance after an open parenthesis
2445 in an abstract declarator, as in
2446 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2450 clear_parm_order ();
2451 declare_parm_level (0); }
2454 parmlist_tags_warning ();
2455 poplevel (0, 0, 0); }
2463 pedwarn ("ISO C forbids forward parameter declarations");
2464 /* Mark the forward decls as such. */
2465 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2466 TREE_ASM_WRITTEN (parm) = 1;
2467 clear_parm_order (); }
2469 { /* Dummy action so attributes are in known place
2470 on parser stack. */ }
2474 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2477 /* This is what appears inside the parens in a function declarator.
2478 Is value is represented in the format that grokdeclarator expects. */
2479 parmlist_2: /* empty */
2480 { $$ = get_parm_info (0); }
2482 { $$ = get_parm_info (0);
2483 /* Gcc used to allow this as an extension. However, it does
2484 not work for all targets, and thus has been disabled.
2485 Also, since func (...) and func () are indistinguishable,
2486 it caused problems with the code in expand_builtin which
2487 tries to verify that BUILT_IN_NEXT_ARG is being used
2489 error ("ISO C requires a named argument before `...'");
2492 { $$ = get_parm_info (1); }
2493 | parms ',' ELLIPSIS
2494 { $$ = get_parm_info (0); }
2499 { push_parm_decl ($1); }
2501 { push_parm_decl ($3); }
2504 /* A single parameter declaration or parameter type name,
2505 as found in a parmlist. */
2507 declspecs_ts setspecs parm_declarator maybe_attribute
2508 { $$ = build_tree_list (build_tree_list (current_declspecs,
2510 chainon ($4, all_prefix_attributes));
2511 POP_DECLSPEC_STACK; }
2512 | declspecs_ts setspecs notype_declarator maybe_attribute
2513 { $$ = build_tree_list (build_tree_list (current_declspecs,
2515 chainon ($4, all_prefix_attributes));
2516 POP_DECLSPEC_STACK; }
2517 | declspecs_ts setspecs absdcl_maybe_attribute
2519 POP_DECLSPEC_STACK; }
2520 | declspecs_nots setspecs notype_declarator maybe_attribute
2521 { $$ = build_tree_list (build_tree_list (current_declspecs,
2523 chainon ($4, all_prefix_attributes));
2524 POP_DECLSPEC_STACK; }
2526 | declspecs_nots setspecs absdcl_maybe_attribute
2528 POP_DECLSPEC_STACK; }
2531 /* The first parm, which must suck attributes from off the top of the parser
2534 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2535 { $$ = build_tree_list (build_tree_list (current_declspecs,
2537 chainon ($4, all_prefix_attributes));
2538 POP_DECLSPEC_STACK; }
2539 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2540 { $$ = build_tree_list (build_tree_list (current_declspecs,
2542 chainon ($4, all_prefix_attributes));
2543 POP_DECLSPEC_STACK; }
2544 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2546 POP_DECLSPEC_STACK; }
2547 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2548 { $$ = build_tree_list (build_tree_list (current_declspecs,
2550 chainon ($4, all_prefix_attributes));
2551 POP_DECLSPEC_STACK; }
2553 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2555 POP_DECLSPEC_STACK; }
2560 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2561 all_prefix_attributes = prefix_attributes; }
2564 /* This is used in a function definition
2565 where either a parmlist or an identifier list is ok.
2566 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2567 parmlist_or_identifiers:
2569 clear_parm_order ();
2570 declare_parm_level (1); }
2571 parmlist_or_identifiers_1
2573 parmlist_tags_warning ();
2574 poplevel (0, 0, 0); }
2577 parmlist_or_identifiers_1:
2581 for (t = $1; t; t = TREE_CHAIN (t))
2582 if (TREE_VALUE (t) == NULL_TREE)
2583 error ("`...' in old-style identifier list");
2584 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2587 /* A nonempty list of identifiers. */
2590 { $$ = build_tree_list (NULL_TREE, $1); }
2591 | identifiers ',' IDENTIFIER
2592 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2595 /* A nonempty list of identifiers, including typenames. */
2596 identifiers_or_typenames:
2598 { $$ = build_tree_list (NULL_TREE, $1); }
2599 | identifiers_or_typenames ',' identifier
2600 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2605 { $$ = SAVE_WARN_FLAGS();
2607 warn_pointer_arith = 0; }
2611 /* Objective-C productions. */
2621 if (objc_implementation_context)
2623 finish_class (objc_implementation_context);
2624 objc_ivar_chain = NULL_TREE;
2625 objc_implementation_context = NULL_TREE;
2628 warning ("`@end' must appear in an implementation context");
2632 /* A nonempty list of identifiers. */
2635 { $$ = build_tree_list (NULL_TREE, $1); }
2636 | identifier_list ',' identifier
2637 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2641 CLASS identifier_list ';'
2643 objc_declare_class ($2);
2647 ALIAS identifier identifier ';'
2649 objc_declare_alias ($2, $3);
2653 INTERFACE identifier protocolrefs '{'
2655 objc_interface_context = objc_ivar_context
2656 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2657 objc_public_flag = 0;
2661 continue_class (objc_interface_context);
2666 finish_class (objc_interface_context);
2667 objc_interface_context = NULL_TREE;
2670 | INTERFACE identifier protocolrefs
2672 objc_interface_context
2673 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2674 continue_class (objc_interface_context);
2679 finish_class (objc_interface_context);
2680 objc_interface_context = NULL_TREE;
2683 | INTERFACE identifier ':' identifier protocolrefs '{'
2685 objc_interface_context = objc_ivar_context
2686 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2687 objc_public_flag = 0;
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
2703 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2704 continue_class (objc_interface_context);
2709 finish_class (objc_interface_context);
2710 objc_interface_context = NULL_TREE;
2713 | IMPLEMENTATION identifier '{'
2715 objc_implementation_context = objc_ivar_context
2716 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2717 objc_public_flag = 0;
2722 = continue_class (objc_implementation_context);
2725 | IMPLEMENTATION identifier
2727 objc_implementation_context
2728 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2730 = continue_class (objc_implementation_context);
2733 | IMPLEMENTATION identifier ':' identifier '{'
2735 objc_implementation_context = objc_ivar_context
2736 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2737 objc_public_flag = 0;
2742 = continue_class (objc_implementation_context);
2745 | IMPLEMENTATION identifier ':' identifier
2747 objc_implementation_context
2748 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2750 = continue_class (objc_implementation_context);
2753 | INTERFACE identifier '(' identifier ')' protocolrefs
2755 objc_interface_context
2756 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2757 continue_class (objc_interface_context);
2762 finish_class (objc_interface_context);
2763 objc_interface_context = NULL_TREE;
2766 | IMPLEMENTATION identifier '(' identifier ')'
2768 objc_implementation_context
2769 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2771 = continue_class (objc_implementation_context);
2776 PROTOCOL identifier protocolrefs
2778 objc_pq_context = 1;
2779 objc_interface_context
2780 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2784 objc_pq_context = 0;
2785 finish_protocol(objc_interface_context);
2786 objc_interface_context = NULL_TREE;
2788 /* The @protocol forward-declaration production introduces a
2789 reduce/reduce conflict on ';', which should be resolved in
2790 favor of the production 'identifier_list -> identifier'. */
2791 | PROTOCOL identifier_list ';'
2793 objc_declare_protocols ($2);
2802 | non_empty_protocolrefs
2805 non_empty_protocolrefs:
2806 ARITHCOMPARE identifier_list ARITHCOMPARE
2808 if ($1 == LT_EXPR && $3 == GT_EXPR)
2816 ivar_decl_list visibility_spec ivar_decls
2821 PRIVATE { objc_public_flag = 2; }
2822 | PROTECTED { objc_public_flag = 0; }
2823 | PUBLIC { objc_public_flag = 1; }
2831 | ivar_decls ivar_decl ';'
2835 pedwarn ("extra semicolon in struct or union specified");
2840 /* There is a shift-reduce conflict here, because `components' may
2841 start with a `typename'. It happens that shifting (the default resolution)
2842 does the right thing, because it treats the `typename' as part of
2843 a `typed_typespecs'.
2845 It is possible that this same technique would allow the distinction
2846 between `notype_initdecls' and `initdecls' to be eliminated.
2847 But I am being cautious and not trying it. */
2850 declspecs_nosc_ts setspecs ivars
2852 POP_DECLSPEC_STACK; }
2853 | declspecs_nosc_nots setspecs ivars
2855 POP_DECLSPEC_STACK; }
2864 | ivars ',' maybe_resetattrs ivar_declarator
2870 $$ = add_instance_variable (objc_ivar_context,
2872 $1, current_declspecs,
2875 | declarator ':' expr_no_commas
2877 $$ = add_instance_variable (objc_ivar_context,
2879 $1, current_declspecs, $3);
2881 | ':' expr_no_commas
2883 $$ = add_instance_variable (objc_ivar_context,
2886 current_declspecs, $2);
2892 { objc_inherit_code = CLASS_METHOD_DECL; }
2894 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2900 objc_pq_context = 1;
2901 if (!objc_implementation_context)
2902 fatal_error ("method definition not in class context");
2906 objc_pq_context = 0;
2907 if (objc_inherit_code == CLASS_METHOD_DECL)
2908 add_class_method (objc_implementation_context, $3);
2910 add_instance_method (objc_implementation_context, $3);
2911 start_method_def ($3);
2915 continue_method_def ();
2919 finish_method_def ();
2923 /* the reason for the strange actions in this rule
2924 is so that notype_initdecls when reached via datadef
2925 can find a valid list of type and sc specs in $0. */
2929 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2932 methodprotolist2: /* eliminates a shift/reduce conflict */
2935 | methodprotolist2 methodproto
2936 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2947 /* Remember protocol qualifiers in prototypes. */
2948 objc_pq_context = 1;
2952 /* Forget protocol qualifiers here. */
2953 objc_pq_context = 0;
2954 if (objc_inherit_code == CLASS_METHOD_DECL)
2955 add_class_method (objc_interface_context, $3);
2957 add_instance_method (objc_interface_context, $3);
2963 '(' typename ')' unaryselector
2965 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2970 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2973 | '(' typename ')' keywordselector optparmlist
2975 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2978 | keywordselector optparmlist
2980 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2984 /* "optarglist" assumes that start_method_def has already been called...
2985 if it is not, the "xdecls" will not be placed in the proper scope */
2992 /* to get around the following situation: "int foo (int a) int b; {}" that
2993 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3008 declspecs_ts setspecs myparms ';'
3009 { POP_DECLSPEC_STACK; }
3011 { shadow_tag ($1); }
3012 | declspecs_nots ';'
3013 { pedwarn ("empty declaration"); }
3018 { push_parm_decl ($1); }
3019 | myparms ',' myparm
3020 { push_parm_decl ($3); }
3023 /* A single parameter declaration or parameter type name,
3024 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3027 parm_declarator maybe_attribute
3028 { $$ = build_tree_list (build_tree_list (current_declspecs,
3030 chainon ($2, all_prefix_attributes)); }
3031 | notype_declarator maybe_attribute
3032 { $$ = build_tree_list (build_tree_list (current_declspecs,
3034 chainon ($2, all_prefix_attributes)); }
3035 | absdcl_maybe_attribute
3046 /* oh what a kludge! */
3047 $$ = objc_ellipsis_node;
3055 /* returns a tree list node generated by get_parm_info */
3068 | keywordselector keyworddecl
3070 $$ = chainon ($1, $2);
3083 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3084 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3085 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3086 | TYPESPEC | TYPE_QUAL
3090 selector ':' '(' typename ')' identifier
3092 $$ = build_keyword_decl ($1, $4, $6);
3095 | selector ':' identifier
3097 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3100 | ':' '(' typename ')' identifier
3102 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3107 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3118 | keywordarglist keywordarg
3120 $$ = chainon ($1, $2);
3128 if (TREE_CHAIN ($1) == NULL_TREE)
3129 /* just return the expr., remove a level of indirection */
3130 $$ = TREE_VALUE ($1);
3132 /* we have a comma expr., we will collapse later */
3138 selector ':' keywordexpr
3140 $$ = build_tree_list ($1, $3);
3144 $$ = build_tree_list (NULL_TREE, $2);
3152 $$ = get_class_reference ($1);
3158 { objc_receiver_context = 1; }
3160 { objc_receiver_context = 0; }
3163 $$ = build_tree_list ($3, $5);
3174 | keywordnamelist keywordname
3176 $$ = chainon ($1, $2);
3183 $$ = build_tree_list ($1, NULL_TREE);
3187 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3192 SELECTOR '(' selectorarg ')'
3199 PROTOCOL '(' identifier ')'
3205 /* extension to support C-structures in the archiver */
3208 ENCODE '(' typename ')'
3210 $$ = groktypename ($3);
3217 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3218 cpplib.h's token codes into yacc's token codes. */
3220 static enum cpp_ttype last_token;
3222 /* The reserved keyword table. */
3226 ENUM_BITFIELD(rid) rid : 16;
3227 unsigned int disable : 16;
3230 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3232 #define D_TRAD 0x01 /* not in traditional C */
3233 #define D_C89 0x02 /* not in C89 */
3234 #define D_EXT 0x04 /* GCC extension */
3235 #define D_EXT89 0x08 /* GCC extension incorporated in C99 */
3236 #define D_OBJC 0x10 /* Objective C only */
3238 static const struct resword reswords[] =
3240 { "_Bool", RID_BOOL, 0 },
3241 { "_Complex", RID_COMPLEX, 0 },
3242 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3243 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3244 { "__alignof", RID_ALIGNOF, 0 },
3245 { "__alignof__", RID_ALIGNOF, 0 },
3246 { "__asm", RID_ASM, 0 },
3247 { "__asm__", RID_ASM, 0 },
3248 { "__attribute", RID_ATTRIBUTE, 0 },
3249 { "__attribute__", RID_ATTRIBUTE, 0 },
3250 { "__bounded", RID_BOUNDED, 0 },
3251 { "__bounded__", RID_BOUNDED, 0 },
3252 { "__builtin_va_arg", RID_VA_ARG, 0 },
3253 { "__complex", RID_COMPLEX, 0 },
3254 { "__complex__", RID_COMPLEX, 0 },
3255 { "__const", RID_CONST, 0 },
3256 { "__const__", RID_CONST, 0 },
3257 { "__extension__", RID_EXTENSION, 0 },
3258 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3259 { "__imag", RID_IMAGPART, 0 },
3260 { "__imag__", RID_IMAGPART, 0 },
3261 { "__inline", RID_INLINE, 0 },
3262 { "__inline__", RID_INLINE, 0 },
3263 { "__label__", RID_LABEL, 0 },
3264 { "__ptrbase", RID_PTRBASE, 0 },
3265 { "__ptrbase__", RID_PTRBASE, 0 },
3266 { "__ptrextent", RID_PTREXTENT, 0 },
3267 { "__ptrextent__", RID_PTREXTENT, 0 },
3268 { "__ptrvalue", RID_PTRVALUE, 0 },
3269 { "__ptrvalue__", RID_PTRVALUE, 0 },
3270 { "__real", RID_REALPART, 0 },
3271 { "__real__", RID_REALPART, 0 },
3272 { "__restrict", RID_RESTRICT, 0 },
3273 { "__restrict__", RID_RESTRICT, 0 },
3274 { "__signed", RID_SIGNED, 0 },
3275 { "__signed__", RID_SIGNED, 0 },
3276 { "__typeof", RID_TYPEOF, 0 },
3277 { "__typeof__", RID_TYPEOF, 0 },
3278 { "__unbounded", RID_UNBOUNDED, 0 },
3279 { "__unbounded__", RID_UNBOUNDED, 0 },
3280 { "__volatile", RID_VOLATILE, 0 },
3281 { "__volatile__", RID_VOLATILE, 0 },
3282 { "asm", RID_ASM, D_EXT },
3283 { "auto", RID_AUTO, 0 },
3284 { "break", RID_BREAK, 0 },
3285 { "case", RID_CASE, 0 },
3286 { "char", RID_CHAR, 0 },
3287 { "const", RID_CONST, D_TRAD },
3288 { "continue", RID_CONTINUE, 0 },
3289 { "default", RID_DEFAULT, 0 },
3290 { "do", RID_DO, 0 },
3291 { "double", RID_DOUBLE, 0 },
3292 { "else", RID_ELSE, 0 },
3293 { "enum", RID_ENUM, 0 },
3294 { "extern", RID_EXTERN, 0 },
3295 { "float", RID_FLOAT, 0 },
3296 { "for", RID_FOR, 0 },
3297 { "goto", RID_GOTO, 0 },
3298 { "if", RID_IF, 0 },
3299 { "inline", RID_INLINE, D_TRAD|D_EXT89 },
3300 { "int", RID_INT, 0 },
3301 { "long", RID_LONG, 0 },
3302 { "register", RID_REGISTER, 0 },
3303 { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
3304 { "return", RID_RETURN, 0 },
3305 { "short", RID_SHORT, 0 },
3306 { "signed", RID_SIGNED, D_TRAD },
3307 { "sizeof", RID_SIZEOF, 0 },
3308 { "static", RID_STATIC, 0 },
3309 { "struct", RID_STRUCT, 0 },
3310 { "switch", RID_SWITCH, 0 },
3311 { "typedef", RID_TYPEDEF, 0 },
3312 { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
3313 { "union", RID_UNION, 0 },
3314 { "unsigned", RID_UNSIGNED, 0 },
3315 { "void", RID_VOID, 0 },
3316 { "volatile", RID_VOLATILE, D_TRAD },
3317 { "while", RID_WHILE, 0 },
3319 { "id", RID_ID, D_OBJC },
3321 /* These objc keywords are recognized only immediately after
3323 { "class", RID_AT_CLASS, D_OBJC },
3324 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3325 { "defs", RID_AT_DEFS, D_OBJC },
3326 { "encode", RID_AT_ENCODE, D_OBJC },
3327 { "end", RID_AT_END, D_OBJC },
3328 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3329 { "interface", RID_AT_INTERFACE, D_OBJC },
3330 { "private", RID_AT_PRIVATE, D_OBJC },
3331 { "protected", RID_AT_PROTECTED, D_OBJC },
3332 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3333 { "public", RID_AT_PUBLIC, D_OBJC },
3334 { "selector", RID_AT_SELECTOR, D_OBJC },
3336 /* These are recognized only in protocol-qualifier context
3338 { "bycopy", RID_BYCOPY, D_OBJC },
3339 { "byref", RID_BYREF, D_OBJC },
3340 { "in", RID_IN, D_OBJC },
3341 { "inout", RID_INOUT, D_OBJC },
3342 { "oneway", RID_ONEWAY, D_OBJC },
3343 { "out", RID_OUT, D_OBJC },
3346 #define N_reswords (sizeof reswords / sizeof (struct resword))
3348 /* Table mapping from RID_* constants to yacc token numbers.
3349 Unfortunately we have to have entries for all the keywords in all
3351 static const short rid_to_yy[RID_MAX] =
3353 /* RID_STATIC */ SCSPEC,
3354 /* RID_UNSIGNED */ TYPESPEC,
3355 /* RID_LONG */ TYPESPEC,
3356 /* RID_CONST */ TYPE_QUAL,
3357 /* RID_EXTERN */ SCSPEC,
3358 /* RID_REGISTER */ SCSPEC,
3359 /* RID_TYPEDEF */ SCSPEC,
3360 /* RID_SHORT */ TYPESPEC,
3361 /* RID_INLINE */ SCSPEC,
3362 /* RID_VOLATILE */ TYPE_QUAL,
3363 /* RID_SIGNED */ TYPESPEC,
3364 /* RID_AUTO */ SCSPEC,
3365 /* RID_RESTRICT */ TYPE_QUAL,
3368 /* RID_BOUNDED */ TYPE_QUAL,
3369 /* RID_UNBOUNDED */ TYPE_QUAL,
3370 /* RID_COMPLEX */ TYPESPEC,
3374 /* RID_VIRTUAL */ 0,
3375 /* RID_EXPLICIT */ 0,
3377 /* RID_MUTABLE */ 0,
3380 /* RID_IN */ TYPE_QUAL,
3381 /* RID_OUT */ TYPE_QUAL,
3382 /* RID_INOUT */ TYPE_QUAL,
3383 /* RID_BYCOPY */ TYPE_QUAL,
3384 /* RID_BYREF */ TYPE_QUAL,
3385 /* RID_ONEWAY */ TYPE_QUAL,
3388 /* RID_INT */ TYPESPEC,
3389 /* RID_CHAR */ TYPESPEC,
3390 /* RID_FLOAT */ TYPESPEC,
3391 /* RID_DOUBLE */ TYPESPEC,
3392 /* RID_VOID */ TYPESPEC,
3393 /* RID_ENUM */ ENUM,
3394 /* RID_STRUCT */ STRUCT,
3395 /* RID_UNION */ UNION,
3397 /* RID_ELSE */ ELSE,
3398 /* RID_WHILE */ WHILE,
3401 /* RID_SWITCH */ SWITCH,
3402 /* RID_CASE */ CASE,
3403 /* RID_DEFAULT */ DEFAULT,
3404 /* RID_BREAK */ BREAK,
3405 /* RID_CONTINUE */ CONTINUE,
3406 /* RID_RETURN */ RETURN,
3407 /* RID_GOTO */ GOTO,
3408 /* RID_SIZEOF */ SIZEOF,
3411 /* RID_ASM */ ASM_KEYWORD,
3412 /* RID_TYPEOF */ TYPEOF,
3413 /* RID_ALIGNOF */ ALIGNOF,
3414 /* RID_ATTRIBUTE */ ATTRIBUTE,
3415 /* RID_VA_ARG */ VA_ARG,
3416 /* RID_EXTENSION */ EXTENSION,
3417 /* RID_IMAGPART */ IMAGPART,
3418 /* RID_REALPART */ REALPART,
3419 /* RID_LABEL */ LABEL,
3420 /* RID_PTRBASE */ PTR_BASE,
3421 /* RID_PTREXTENT */ PTR_EXTENT,
3422 /* RID_PTRVALUE */ PTR_VALUE,
3424 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3425 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3426 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3429 /* RID_BOOL */ TYPESPEC,
3433 /* RID_PRIVATE */ 0,
3434 /* RID_PROTECTED */ 0,
3435 /* RID_TEMPLATE */ 0,
3440 /* RID_NAMESPACE */ 0,
3442 /* RID_OPERATOR */ 0,
3447 /* RID_TYPENAME */ 0,
3452 /* RID_CONSTCAST */ 0,
3453 /* RID_DYNCAST */ 0,
3454 /* RID_REINTCAST */ 0,
3455 /* RID_STATCAST */ 0,
3457 /* alternate spellings */
3471 /* RID_ID */ OBJECTNAME,
3472 /* RID_AT_ENCODE */ ENCODE,
3473 /* RID_AT_END */ END,
3474 /* RID_AT_CLASS */ CLASS,
3475 /* RID_AT_ALIAS */ ALIAS,
3476 /* RID_AT_DEFS */ DEFS,
3477 /* RID_AT_PRIVATE */ PRIVATE,
3478 /* RID_AT_PROTECTED */ PROTECTED,
3479 /* RID_AT_PUBLIC */ PUBLIC,
3480 /* RID_AT_PROTOCOL */ PROTOCOL,
3481 /* RID_AT_SELECTOR */ SELECTOR,
3482 /* RID_AT_INTERFACE */ INTERFACE,
3483 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3491 int mask = (flag_isoc99 ? 0 : D_C89)
3492 | (flag_traditional ? D_TRAD : 0)
3493 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3495 if (c_language != clk_objective_c)
3498 /* It is not necessary to register ridpointers as a GC root, because
3499 all the trees it points to are permanently interned in the
3500 get_identifier hash anyway. */
3501 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3502 for (i = 0; i < N_reswords; i++)
3504 /* If a keyword is disabled, do not enter it into the table
3505 and so create a canonical spelling that isn't a keyword. */
3506 if (reswords[i].disable & mask)
3509 id = get_identifier (reswords[i].word);
3510 C_RID_CODE (id) = reswords[i].rid;
3511 C_IS_RESERVED_WORD (id) = 1;
3512 ridpointers [(int) reswords[i].rid] = id;
3516 #define NAME(type) cpp_type2name (type)
3522 const char *string = _(msgid);
3524 if (last_token == CPP_EOF)
3525 error ("%s at end of input", string);
3526 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3528 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3529 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3530 if (val <= UCHAR_MAX && ISGRAPH (val))
3531 error ("%s before %s'%c'", string, ell, val);
3533 error ("%s before %s'\\x%x'", string, ell, val);
3535 else if (last_token == CPP_STRING
3536 || last_token == CPP_WSTRING)
3537 error ("%s before string constant", string);
3538 else if (last_token == CPP_NUMBER)
3539 error ("%s before numeric constant", string);
3540 else if (last_token == CPP_NAME)
3541 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3543 error ("%s before '%s' token", string, NAME(last_token));
3552 int objc_force_identifier = objc_need_raw_identifier;
3553 OBJC_NEED_RAW_IDENTIFIER (0);
3556 if (C_IS_RESERVED_WORD (yylval.ttype))
3558 enum rid rid_code = C_RID_CODE (yylval.ttype);
3561 /* Turn non-typedefed refs to "id" into plain identifiers; this
3562 allows constructs like "void foo(id id);" to work. */
3563 if (rid_code == RID_ID)
3565 decl = lookup_name (yylval.ttype);
3566 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3570 if (!OBJC_IS_AT_KEYWORD (rid_code)
3571 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3574 int yycode = rid_to_yy[(int) rid_code];
3575 if (yycode == STRING_FUNC_NAME)
3577 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3578 to string constants. */
3579 const char *name = fname_string (rid_code);
3581 yylval.ttype = build_string (strlen (name) + 1, name);
3582 last_token = CPP_STRING; /* so yyerror won't choke */
3586 /* Return the canonical spelling for this keyword. */
3587 yylval.ttype = ridpointers[(int) rid_code];
3592 decl = lookup_name (yylval.ttype);
3595 if (TREE_CODE (decl) == TYPE_DECL)
3601 tree objc_interface_decl = is_class_name (yylval.ttype);
3602 /* ObjC class names are in the same namespace as variables and
3603 typedefs, and hence are shadowed by local declarations. */
3604 if (objc_interface_decl
3605 && (global_bindings_p ()
3606 || (!objc_force_identifier && !decl)))
3608 yylval.ttype = objc_interface_decl;
3622 last_token = c_lex (&yylval.ttype);
3625 case CPP_EQ: return '=';
3626 case CPP_NOT: return '!';
3627 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3628 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3629 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3630 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3631 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3632 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3633 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3634 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3635 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3636 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3637 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3638 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3640 case CPP_COMPL: return '~';
3641 case CPP_AND_AND: return ANDAND;
3642 case CPP_OR_OR: return OROR;
3643 case CPP_QUERY: return '?';
3644 case CPP_OPEN_PAREN: return '(';
3645 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3646 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3647 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3648 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3650 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3651 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3652 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3653 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3654 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3655 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3656 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3657 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3658 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3659 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3661 case CPP_OPEN_SQUARE: return '[';
3662 case CPP_CLOSE_SQUARE: return ']';
3663 case CPP_OPEN_BRACE: return '{';
3664 case CPP_CLOSE_BRACE: return '}';
3665 case CPP_ELLIPSIS: return ELLIPSIS;
3667 case CPP_PLUS_PLUS: return PLUSPLUS;
3668 case CPP_MINUS_MINUS: return MINUSMINUS;
3669 case CPP_DEREF: return POINTSAT;
3670 case CPP_DOT: return '.';
3672 /* The following tokens may affect the interpretation of any
3673 identifiers following, if doing Objective-C. */
3674 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3675 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3676 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3677 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3683 return yylexname ();
3694 /* This token is Objective-C specific. It gives the next token
3695 special significance. */
3700 enum cpp_ttype after_at_type;
3702 after_at_type = c_lex (&after_at);
3704 if (after_at_type == CPP_NAME
3705 && C_IS_RESERVED_WORD (after_at)
3706 && OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
3708 yylval.ttype = after_at;
3709 last_token = after_at_type;
3710 return rid_to_yy [(int) C_RID_CODE (after_at)];
3712 _cpp_backup_tokens (parse_in, 1);
3717 /* These tokens are C++ specific (and will not be generated
3718 in C mode, but let's be cautious). */
3720 case CPP_DEREF_STAR:
3726 /* These tokens should not survive translation phase 4. */
3729 error ("syntax error at '%s' token", NAME(last_token));
3742 timevar_push (TV_LEX);
3744 timevar_pop (TV_LEX);
3748 /* Sets the value of the 'yydebug' variable to VALUE.
3749 This is a function so we don't have to have YYDEBUG defined
3750 in order to build the compiler. */
3753 c_set_yydebug (value)
3759 warning ("YYDEBUG not defined");
3763 /* Function used when yydebug is set, to print a token in more detail. */
3766 yyprint (file, yychar, yyl)
3773 fprintf (file, " [%s]", NAME(last_token));
3783 if (IDENTIFIER_POINTER (t))
3784 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3788 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3789 if (TREE_CODE (t) == INTEGER_CST)
3791 #if HOST_BITS_PER_WIDE_INT == 64
3792 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3795 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3802 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3808 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3813 /* This is not the ideal place to put these, but we have to get them out
3814 of c-lex.c because cp/lex.c has its own versions. */
3816 /* Return something to represent absolute declarators containing a *.
3817 TARGET is the absolute declarator that the * contains.
3818 TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
3819 to apply to the pointer type, represented as identifiers, possible mixed
3822 We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
3823 if attributes are present) and whose type is the modifier list. */
3826 make_pointer_declarator (type_quals_attrs, target)
3827 tree type_quals_attrs, target;
3830 tree itarget = target;
3831 split_specs_attrs (type_quals_attrs, &quals, &attrs);
3832 if (attrs != NULL_TREE)
3833 itarget = tree_cons (attrs, target, NULL_TREE);
3834 return build1 (INDIRECT_REF, quals, itarget);