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 { $$ = fname_decl (C_RID_CODE ($$), $$); }
625 | '(' typename ')' '{'
626 { start_init (NULL_TREE, NULL, 0);
627 $2 = groktypename ($2);
628 really_start_incremental_init ($2); }
629 initlist_maybe_comma '}' %prec UNARY
631 tree result = pop_init_level (0);
635 if (pedantic && ! flag_isoc99)
636 pedwarn ("ISO C89 forbids compound literals");
637 if (TYPE_NAME (type) != 0)
639 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
640 name = IDENTIFIER_POINTER (TYPE_NAME (type));
642 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
647 if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
649 int failure = complete_array_type (type, $$, 1);
655 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
656 if (IS_EXPR_CODE_CLASS (class))
657 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
660 { $$ = error_mark_node; }
661 | compstmt_primary_start compstmt_nostart ')'
662 { tree saved_last_tree;
665 pedwarn ("ISO C forbids braced-groups within expressions");
668 saved_last_tree = COMPOUND_BODY ($1);
669 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
670 last_tree = saved_last_tree;
671 TREE_CHAIN (last_tree) = NULL_TREE;
673 last_expr_type = void_type_node;
674 $$ = build1 (STMT_EXPR, last_expr_type, $1);
675 TREE_SIDE_EFFECTS ($$) = 1;
677 | compstmt_primary_start error ')'
680 last_tree = COMPOUND_BODY ($1);
681 TREE_CHAIN (last_tree) = NULL_TREE;
682 $$ = error_mark_node;
684 | primary '(' exprlist ')' %prec '.'
685 { $$ = build_function_call ($1, $3); }
686 | VA_ARG '(' expr_no_commas ',' typename ')'
687 { $$ = build_va_arg ($3, groktypename ($5)); }
688 | primary '[' expr ']' %prec '.'
689 { $$ = build_array_ref ($1, $3); }
690 | primary '.' identifier
693 if (!is_public ($1, $3))
694 $$ = error_mark_node;
697 $$ = build_component_ref ($1, $3);
699 | primary POINTSAT identifier
701 tree expr = build_indirect_ref ($1, "->");
704 if (!is_public (expr, $3))
705 $$ = error_mark_node;
708 $$ = build_component_ref (expr, $3);
711 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
713 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
716 { $$ = build_message_expr ($1); }
718 { $$ = build_selector_expr ($1); }
720 { $$ = build_protocol_expr ($1); }
722 { $$ = build_encode_expr ($1); }
724 { $$ = build_objc_string_object ($1); }
728 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
734 static int last_lineno = 0;
735 static const char *last_input_filename = 0;
737 $$ = chainon ($1, $2);
739 if (warn_traditional && !in_system_header
740 && (lineno != last_lineno || !last_input_filename ||
741 strcmp (last_input_filename, input_filename)))
743 warning ("traditional C rejects string concatenation");
744 last_lineno = lineno;
745 last_input_filename = input_filename;
752 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
753 onto it, which is to be read as an ObjC string object. */
757 | objc_string '@' STRING
758 { $$ = chainon ($1, $3); }
762 old_style_parm_decls:
766 /* ... is used here to indicate a varargs function. */
769 pedwarn ("ISO C does not permit use of `varargs.h'"); }
772 /* The following are analogous to lineno_decl, decls and decl
773 except that they do not allow nested functions.
774 They are used for old-style parm decls. */
776 save_filename save_lineno datadecl
783 | datadecls lineno_datadecl
784 | lineno_datadecl errstmt
787 /* We don't allow prefix attributes here because they cause reduce/reduce
788 conflicts: we can't know whether we're parsing a function decl with
789 attribute suffix, or function defn with attribute prefix on first old
792 declspecs_ts_nosa setspecs initdecls ';'
793 { POP_DECLSPEC_STACK; }
794 | declspecs_nots_nosa setspecs notype_initdecls ';'
795 { POP_DECLSPEC_STACK; }
796 | declspecs_ts_nosa ';'
797 { shadow_tag_warned ($1, 1);
798 pedwarn ("empty declaration"); }
799 | declspecs_nots_nosa ';'
800 { pedwarn ("empty declaration"); }
803 /* This combination which saves a lineno before a decl
804 is the normal thing to use, rather than decl itself.
805 This is to avoid shift/reduce conflicts in contexts
806 where statement labels are allowed. */
808 save_filename save_lineno decl
812 /* records the type and storage class specs to use for processing
813 the declarators that follow.
814 Maintains a stack of outer-level values of current_declspecs,
815 for the sake of parm declarations nested in function declarators. */
816 setspecs: /* empty */
817 { pending_xref_error ();
819 split_specs_attrs ($<ttype>0,
820 ¤t_declspecs, &prefix_attributes);
821 all_prefix_attributes = prefix_attributes; }
824 /* Possibly attributes after a comma, which should reset all_prefix_attributes
825 to prefix_attributes with these ones chained on the front. */
828 { all_prefix_attributes = chainon ($1, prefix_attributes); }
832 declspecs_ts setspecs initdecls ';'
833 { POP_DECLSPEC_STACK; }
834 | declspecs_nots setspecs notype_initdecls ';'
835 { POP_DECLSPEC_STACK; }
836 | declspecs_ts setspecs nested_function
837 { POP_DECLSPEC_STACK; }
838 | declspecs_nots setspecs notype_nested_function
839 { POP_DECLSPEC_STACK; }
843 { RESTORE_WARN_FLAGS ($1); }
846 /* A list of declaration specifiers. These are:
848 - Storage class specifiers (SCSPEC), which for GCC currently include
849 function specifiers ("inline").
851 - Type specifiers (typespec_*).
853 - Type qualifiers (TYPE_QUAL).
855 - Attribute specifier lists (attributes).
857 These are stored as a TREE_LIST; the head of the list is the last
858 item in the specifier list. Each entry in the list has either a
859 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
860 is a single other specifier or qualifier; and a TREE_CHAIN that is the
861 rest of the list. TREE_STATIC is set on the list if something other
862 than a storage class specifier or attribute has been seen; this is used
863 to warn for the obsolescent usage of storage class specifiers other than
864 at the start of the list. (Doing this properly would require function
865 specifiers to be handled separately from storage class specifiers.)
867 The various cases below are classified according to:
869 (a) Whether a storage class specifier is included or not; some
870 places in the grammar disallow storage class specifiers (_sc or _nosc).
872 (b) Whether a type specifier has been seen; after a type specifier,
873 a typedef name is an identifier to redeclare (_ts or _nots).
875 (c) Whether the list starts with an attribute; in certain places,
876 the grammar requires specifiers that don't start with an attribute
879 (d) Whether the list ends with an attribute (or a specifier such that
880 any following attribute would have been parsed as part of that specifier);
881 this avoids shift-reduce conflicts in the parsing of attributes
886 (i) Distinguish between function specifiers and storage class specifiers,
887 at least for the purpose of warnings about obsolescent usage.
889 (ii) Halve the number of productions here by eliminating the _sc/_nosc
890 distinction and instead checking where required that storage class
891 specifiers aren't present. */
893 /* Declspecs which contain at least one type specifier or typedef name.
894 (Just `const' or `volatile' is not enough.)
895 A typedef'd name following these is taken as a name to be declared.
896 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
898 declspecs_nosc_nots_nosa_noea:
900 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
901 TREE_STATIC ($$) = 1; }
902 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
903 { $$ = tree_cons (NULL_TREE, $2, $1);
904 TREE_STATIC ($$) = 1; }
905 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
906 { $$ = tree_cons (NULL_TREE, $2, $1);
907 TREE_STATIC ($$) = 1; }
910 declspecs_nosc_nots_nosa_ea:
911 declspecs_nosc_nots_nosa_noea attributes
912 { $$ = tree_cons ($2, NULL_TREE, $1);
913 TREE_STATIC ($$) = TREE_STATIC ($1); }
916 declspecs_nosc_nots_sa_noea:
917 declspecs_nosc_nots_sa_noea TYPE_QUAL
918 { $$ = tree_cons (NULL_TREE, $2, $1);
919 TREE_STATIC ($$) = 1; }
920 | declspecs_nosc_nots_sa_ea TYPE_QUAL
921 { $$ = tree_cons (NULL_TREE, $2, $1);
922 TREE_STATIC ($$) = 1; }
925 declspecs_nosc_nots_sa_ea:
927 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
928 TREE_STATIC ($$) = 0; }
929 | declspecs_nosc_nots_sa_noea attributes
930 { $$ = tree_cons ($2, NULL_TREE, $1);
931 TREE_STATIC ($$) = TREE_STATIC ($1); }
934 declspecs_nosc_ts_nosa_noea:
936 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
937 TREE_STATIC ($$) = 1; }
938 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
939 { $$ = tree_cons (NULL_TREE, $2, $1);
940 TREE_STATIC ($$) = 1; }
941 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
942 { $$ = tree_cons (NULL_TREE, $2, $1);
943 TREE_STATIC ($$) = 1; }
944 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
945 { $$ = tree_cons (NULL_TREE, $2, $1);
946 TREE_STATIC ($$) = 1; }
947 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
948 { $$ = tree_cons (NULL_TREE, $2, $1);
949 TREE_STATIC ($$) = 1; }
950 | declspecs_nosc_nots_nosa_noea typespec_nonattr
951 { $$ = tree_cons (NULL_TREE, $2, $1);
952 TREE_STATIC ($$) = 1; }
953 | declspecs_nosc_nots_nosa_ea typespec_nonattr
954 { $$ = tree_cons (NULL_TREE, $2, $1);
955 TREE_STATIC ($$) = 1; }
958 declspecs_nosc_ts_nosa_ea:
960 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
961 TREE_STATIC ($$) = 1; }
962 | declspecs_nosc_ts_nosa_noea attributes
963 { $$ = tree_cons ($2, NULL_TREE, $1);
964 TREE_STATIC ($$) = TREE_STATIC ($1); }
965 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
966 { $$ = tree_cons (NULL_TREE, $2, $1);
967 TREE_STATIC ($$) = 1; }
968 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
969 { $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = 1; }
971 | declspecs_nosc_nots_nosa_noea typespec_attr
972 { $$ = tree_cons (NULL_TREE, $2, $1);
973 TREE_STATIC ($$) = 1; }
974 | declspecs_nosc_nots_nosa_ea typespec_attr
975 { $$ = tree_cons (NULL_TREE, $2, $1);
976 TREE_STATIC ($$) = 1; }
979 declspecs_nosc_ts_sa_noea:
980 declspecs_nosc_ts_sa_noea TYPE_QUAL
981 { $$ = tree_cons (NULL_TREE, $2, $1);
982 TREE_STATIC ($$) = 1; }
983 | declspecs_nosc_ts_sa_ea TYPE_QUAL
984 { $$ = tree_cons (NULL_TREE, $2, $1);
985 TREE_STATIC ($$) = 1; }
986 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
987 { $$ = tree_cons (NULL_TREE, $2, $1);
988 TREE_STATIC ($$) = 1; }
989 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
990 { $$ = tree_cons (NULL_TREE, $2, $1);
991 TREE_STATIC ($$) = 1; }
992 | declspecs_nosc_nots_sa_noea typespec_nonattr
993 { $$ = tree_cons (NULL_TREE, $2, $1);
994 TREE_STATIC ($$) = 1; }
995 | declspecs_nosc_nots_sa_ea typespec_nonattr
996 { $$ = tree_cons (NULL_TREE, $2, $1);
997 TREE_STATIC ($$) = 1; }
1000 declspecs_nosc_ts_sa_ea:
1001 declspecs_nosc_ts_sa_noea attributes
1002 { $$ = tree_cons ($2, NULL_TREE, $1);
1003 TREE_STATIC ($$) = TREE_STATIC ($1); }
1004 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1005 { $$ = tree_cons (NULL_TREE, $2, $1);
1006 TREE_STATIC ($$) = 1; }
1007 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1008 { $$ = tree_cons (NULL_TREE, $2, $1);
1009 TREE_STATIC ($$) = 1; }
1010 | declspecs_nosc_nots_sa_noea typespec_attr
1011 { $$ = tree_cons (NULL_TREE, $2, $1);
1012 TREE_STATIC ($$) = 1; }
1013 | declspecs_nosc_nots_sa_ea typespec_attr
1014 { $$ = tree_cons (NULL_TREE, $2, $1);
1015 TREE_STATIC ($$) = 1; }
1018 declspecs_sc_nots_nosa_noea:
1020 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1021 TREE_STATIC ($$) = 0; }
1022 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1023 { $$ = tree_cons (NULL_TREE, $2, $1);
1024 TREE_STATIC ($$) = 1; }
1025 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1026 { $$ = tree_cons (NULL_TREE, $2, $1);
1027 TREE_STATIC ($$) = 1; }
1028 | declspecs_nosc_nots_nosa_noea SCSPEC
1029 { if (extra_warnings && TREE_STATIC ($1))
1030 warning ("`%s' is not at beginning of declaration",
1031 IDENTIFIER_POINTER ($2));
1032 $$ = tree_cons (NULL_TREE, $2, $1);
1033 TREE_STATIC ($$) = TREE_STATIC ($1); }
1034 | declspecs_nosc_nots_nosa_ea SCSPEC
1035 { if (extra_warnings && TREE_STATIC ($1))
1036 warning ("`%s' is not at beginning of declaration",
1037 IDENTIFIER_POINTER ($2));
1038 $$ = tree_cons (NULL_TREE, $2, $1);
1039 TREE_STATIC ($$) = TREE_STATIC ($1); }
1040 | declspecs_sc_nots_nosa_noea SCSPEC
1041 { if (extra_warnings && TREE_STATIC ($1))
1042 warning ("`%s' is not at beginning of declaration",
1043 IDENTIFIER_POINTER ($2));
1044 $$ = tree_cons (NULL_TREE, $2, $1);
1045 TREE_STATIC ($$) = TREE_STATIC ($1); }
1046 | declspecs_sc_nots_nosa_ea SCSPEC
1047 { if (extra_warnings && TREE_STATIC ($1))
1048 warning ("`%s' is not at beginning of declaration",
1049 IDENTIFIER_POINTER ($2));
1050 $$ = tree_cons (NULL_TREE, $2, $1);
1051 TREE_STATIC ($$) = TREE_STATIC ($1); }
1054 declspecs_sc_nots_nosa_ea:
1055 declspecs_sc_nots_nosa_noea attributes
1056 { $$ = tree_cons ($2, NULL_TREE, $1);
1057 TREE_STATIC ($$) = TREE_STATIC ($1); }
1060 declspecs_sc_nots_sa_noea:
1061 declspecs_sc_nots_sa_noea TYPE_QUAL
1062 { $$ = tree_cons (NULL_TREE, $2, $1);
1063 TREE_STATIC ($$) = 1; }
1064 | declspecs_sc_nots_sa_ea TYPE_QUAL
1065 { $$ = tree_cons (NULL_TREE, $2, $1);
1066 TREE_STATIC ($$) = 1; }
1067 | declspecs_nosc_nots_sa_noea SCSPEC
1068 { if (extra_warnings && TREE_STATIC ($1))
1069 warning ("`%s' is not at beginning of declaration",
1070 IDENTIFIER_POINTER ($2));
1071 $$ = tree_cons (NULL_TREE, $2, $1);
1072 TREE_STATIC ($$) = TREE_STATIC ($1); }
1073 | declspecs_nosc_nots_sa_ea SCSPEC
1074 { if (extra_warnings && TREE_STATIC ($1))
1075 warning ("`%s' is not at beginning of declaration",
1076 IDENTIFIER_POINTER ($2));
1077 $$ = tree_cons (NULL_TREE, $2, $1);
1078 TREE_STATIC ($$) = TREE_STATIC ($1); }
1079 | declspecs_sc_nots_sa_noea SCSPEC
1080 { if (extra_warnings && TREE_STATIC ($1))
1081 warning ("`%s' is not at beginning of declaration",
1082 IDENTIFIER_POINTER ($2));
1083 $$ = tree_cons (NULL_TREE, $2, $1);
1084 TREE_STATIC ($$) = TREE_STATIC ($1); }
1085 | declspecs_sc_nots_sa_ea SCSPEC
1086 { if (extra_warnings && TREE_STATIC ($1))
1087 warning ("`%s' is not at beginning of declaration",
1088 IDENTIFIER_POINTER ($2));
1089 $$ = tree_cons (NULL_TREE, $2, $1);
1090 TREE_STATIC ($$) = TREE_STATIC ($1); }
1093 declspecs_sc_nots_sa_ea:
1094 declspecs_sc_nots_sa_noea attributes
1095 { $$ = tree_cons ($2, NULL_TREE, $1);
1096 TREE_STATIC ($$) = TREE_STATIC ($1); }
1099 declspecs_sc_ts_nosa_noea:
1100 declspecs_sc_ts_nosa_noea TYPE_QUAL
1101 { $$ = tree_cons (NULL_TREE, $2, $1);
1102 TREE_STATIC ($$) = 1; }
1103 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1104 { $$ = tree_cons (NULL_TREE, $2, $1);
1105 TREE_STATIC ($$) = 1; }
1106 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1107 { $$ = tree_cons (NULL_TREE, $2, $1);
1108 TREE_STATIC ($$) = 1; }
1109 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1110 { $$ = tree_cons (NULL_TREE, $2, $1);
1111 TREE_STATIC ($$) = 1; }
1112 | declspecs_sc_nots_nosa_noea typespec_nonattr
1113 { $$ = tree_cons (NULL_TREE, $2, $1);
1114 TREE_STATIC ($$) = 1; }
1115 | declspecs_sc_nots_nosa_ea typespec_nonattr
1116 { $$ = tree_cons (NULL_TREE, $2, $1);
1117 TREE_STATIC ($$) = 1; }
1118 | declspecs_nosc_ts_nosa_noea SCSPEC
1119 { if (extra_warnings && TREE_STATIC ($1))
1120 warning ("`%s' is not at beginning of declaration",
1121 IDENTIFIER_POINTER ($2));
1122 $$ = tree_cons (NULL_TREE, $2, $1);
1123 TREE_STATIC ($$) = TREE_STATIC ($1); }
1124 | declspecs_nosc_ts_nosa_ea SCSPEC
1125 { if (extra_warnings && TREE_STATIC ($1))
1126 warning ("`%s' is not at beginning of declaration",
1127 IDENTIFIER_POINTER ($2));
1128 $$ = tree_cons (NULL_TREE, $2, $1);
1129 TREE_STATIC ($$) = TREE_STATIC ($1); }
1130 | declspecs_sc_ts_nosa_noea SCSPEC
1131 { if (extra_warnings && TREE_STATIC ($1))
1132 warning ("`%s' is not at beginning of declaration",
1133 IDENTIFIER_POINTER ($2));
1134 $$ = tree_cons (NULL_TREE, $2, $1);
1135 TREE_STATIC ($$) = TREE_STATIC ($1); }
1136 | declspecs_sc_ts_nosa_ea SCSPEC
1137 { if (extra_warnings && TREE_STATIC ($1))
1138 warning ("`%s' is not at beginning of declaration",
1139 IDENTIFIER_POINTER ($2));
1140 $$ = tree_cons (NULL_TREE, $2, $1);
1141 TREE_STATIC ($$) = TREE_STATIC ($1); }
1144 declspecs_sc_ts_nosa_ea:
1145 declspecs_sc_ts_nosa_noea attributes
1146 { $$ = tree_cons ($2, NULL_TREE, $1);
1147 TREE_STATIC ($$) = TREE_STATIC ($1); }
1148 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1149 { $$ = tree_cons (NULL_TREE, $2, $1);
1150 TREE_STATIC ($$) = 1; }
1151 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1152 { $$ = tree_cons (NULL_TREE, $2, $1);
1153 TREE_STATIC ($$) = 1; }
1154 | declspecs_sc_nots_nosa_noea typespec_attr
1155 { $$ = tree_cons (NULL_TREE, $2, $1);
1156 TREE_STATIC ($$) = 1; }
1157 | declspecs_sc_nots_nosa_ea typespec_attr
1158 { $$ = tree_cons (NULL_TREE, $2, $1);
1159 TREE_STATIC ($$) = 1; }
1162 declspecs_sc_ts_sa_noea:
1163 declspecs_sc_ts_sa_noea TYPE_QUAL
1164 { $$ = tree_cons (NULL_TREE, $2, $1);
1165 TREE_STATIC ($$) = 1; }
1166 | declspecs_sc_ts_sa_ea TYPE_QUAL
1167 { $$ = tree_cons (NULL_TREE, $2, $1);
1168 TREE_STATIC ($$) = 1; }
1169 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1170 { $$ = tree_cons (NULL_TREE, $2, $1);
1171 TREE_STATIC ($$) = 1; }
1172 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1173 { $$ = tree_cons (NULL_TREE, $2, $1);
1174 TREE_STATIC ($$) = 1; }
1175 | declspecs_sc_nots_sa_noea typespec_nonattr
1176 { $$ = tree_cons (NULL_TREE, $2, $1);
1177 TREE_STATIC ($$) = 1; }
1178 | declspecs_sc_nots_sa_ea typespec_nonattr
1179 { $$ = tree_cons (NULL_TREE, $2, $1);
1180 TREE_STATIC ($$) = 1; }
1181 | declspecs_nosc_ts_sa_noea SCSPEC
1182 { if (extra_warnings && TREE_STATIC ($1))
1183 warning ("`%s' is not at beginning of declaration",
1184 IDENTIFIER_POINTER ($2));
1185 $$ = tree_cons (NULL_TREE, $2, $1);
1186 TREE_STATIC ($$) = TREE_STATIC ($1); }
1187 | declspecs_nosc_ts_sa_ea SCSPEC
1188 { if (extra_warnings && TREE_STATIC ($1))
1189 warning ("`%s' is not at beginning of declaration",
1190 IDENTIFIER_POINTER ($2));
1191 $$ = tree_cons (NULL_TREE, $2, $1);
1192 TREE_STATIC ($$) = TREE_STATIC ($1); }
1193 | declspecs_sc_ts_sa_noea SCSPEC
1194 { if (extra_warnings && TREE_STATIC ($1))
1195 warning ("`%s' is not at beginning of declaration",
1196 IDENTIFIER_POINTER ($2));
1197 $$ = tree_cons (NULL_TREE, $2, $1);
1198 TREE_STATIC ($$) = TREE_STATIC ($1); }
1199 | declspecs_sc_ts_sa_ea SCSPEC
1200 { if (extra_warnings && TREE_STATIC ($1))
1201 warning ("`%s' is not at beginning of declaration",
1202 IDENTIFIER_POINTER ($2));
1203 $$ = tree_cons (NULL_TREE, $2, $1);
1204 TREE_STATIC ($$) = TREE_STATIC ($1); }
1207 declspecs_sc_ts_sa_ea:
1208 declspecs_sc_ts_sa_noea attributes
1209 { $$ = tree_cons ($2, NULL_TREE, $1);
1210 TREE_STATIC ($$) = TREE_STATIC ($1); }
1211 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1212 { $$ = tree_cons (NULL_TREE, $2, $1);
1213 TREE_STATIC ($$) = 1; }
1214 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1215 { $$ = tree_cons (NULL_TREE, $2, $1);
1216 TREE_STATIC ($$) = 1; }
1217 | declspecs_sc_nots_sa_noea typespec_attr
1218 { $$ = tree_cons (NULL_TREE, $2, $1);
1219 TREE_STATIC ($$) = 1; }
1220 | declspecs_sc_nots_sa_ea typespec_attr
1221 { $$ = tree_cons (NULL_TREE, $2, $1);
1222 TREE_STATIC ($$) = 1; }
1225 /* Particular useful classes of declspecs. */
1227 declspecs_nosc_ts_nosa_noea
1228 | declspecs_nosc_ts_nosa_ea
1229 | declspecs_nosc_ts_sa_noea
1230 | declspecs_nosc_ts_sa_ea
1231 | declspecs_sc_ts_nosa_noea
1232 | declspecs_sc_ts_nosa_ea
1233 | declspecs_sc_ts_sa_noea
1234 | declspecs_sc_ts_sa_ea
1238 declspecs_nosc_nots_nosa_noea
1239 | declspecs_nosc_nots_nosa_ea
1240 | declspecs_nosc_nots_sa_noea
1241 | declspecs_nosc_nots_sa_ea
1242 | declspecs_sc_nots_nosa_noea
1243 | declspecs_sc_nots_nosa_ea
1244 | declspecs_sc_nots_sa_noea
1245 | declspecs_sc_nots_sa_ea
1249 declspecs_nosc_ts_nosa_noea
1250 | declspecs_nosc_ts_nosa_ea
1251 | declspecs_sc_ts_nosa_noea
1252 | declspecs_sc_ts_nosa_ea
1255 declspecs_nots_nosa:
1256 declspecs_nosc_nots_nosa_noea
1257 | declspecs_nosc_nots_nosa_ea
1258 | declspecs_sc_nots_nosa_noea
1259 | declspecs_sc_nots_nosa_ea
1263 declspecs_nosc_ts_nosa_noea
1264 | declspecs_nosc_ts_nosa_ea
1265 | declspecs_nosc_ts_sa_noea
1266 | declspecs_nosc_ts_sa_ea
1269 declspecs_nosc_nots:
1270 declspecs_nosc_nots_nosa_noea
1271 | declspecs_nosc_nots_nosa_ea
1272 | declspecs_nosc_nots_sa_noea
1273 | declspecs_nosc_nots_sa_ea
1277 declspecs_nosc_ts_nosa_noea
1278 | declspecs_nosc_ts_nosa_ea
1279 | declspecs_nosc_ts_sa_noea
1280 | declspecs_nosc_ts_sa_ea
1281 | declspecs_nosc_nots_nosa_noea
1282 | declspecs_nosc_nots_nosa_ea
1283 | declspecs_nosc_nots_sa_noea
1284 | declspecs_nosc_nots_sa_ea
1288 declspecs_nosc_nots_nosa_noea
1289 | declspecs_nosc_nots_nosa_ea
1290 | declspecs_nosc_nots_sa_noea
1291 | declspecs_nosc_nots_sa_ea
1292 | declspecs_nosc_ts_nosa_noea
1293 | declspecs_nosc_ts_nosa_ea
1294 | declspecs_nosc_ts_sa_noea
1295 | declspecs_nosc_ts_sa_ea
1296 | declspecs_sc_nots_nosa_noea
1297 | declspecs_sc_nots_nosa_ea
1298 | declspecs_sc_nots_sa_noea
1299 | declspecs_sc_nots_sa_ea
1300 | declspecs_sc_ts_nosa_noea
1301 | declspecs_sc_ts_nosa_ea
1302 | declspecs_sc_ts_sa_noea
1303 | declspecs_sc_ts_sa_ea
1306 /* A (possibly empty) sequence of type qualifiers and attributes. */
1307 maybe_type_quals_attrs:
1310 | declspecs_nosc_nots
1314 /* A type specifier (but not a type qualifier).
1315 Once we have seen one of these in a declaration,
1316 if a typedef name appears then it is being redeclared.
1318 The _reserved versions start with a reserved word and may appear anywhere
1319 in the declaration specifiers; the _nonreserved versions may only
1320 appear before any other type specifiers, and after that are (if names)
1323 FIXME: should the _nonreserved version be restricted to names being
1324 redeclared only? The other entries there relate only the GNU extensions
1325 and Objective C, and are historically parsed thus, and don't make sense
1326 after other type specifiers, but it might be cleaner to count them as
1329 _attr means: specifiers that either end with attributes,
1330 or are such that any following attributes would
1331 be parsed as part of the specifier.
1333 _nonattr: specifiers. */
1336 typespec_reserved_nonattr
1337 | typespec_nonreserved_nonattr
1341 typespec_reserved_attr
1344 typespec_reserved_nonattr:
1346 { OBJC_NEED_RAW_IDENTIFIER (1); }
1350 typespec_reserved_attr:
1354 typespec_nonreserved_nonattr:
1356 { /* For a typedef name, record the meaning, not the name.
1357 In case of `foo foo, bar;'. */
1358 $$ = lookup_name ($1); }
1360 | CLASSNAME protocolrefs
1361 { $$ = get_static_reference ($1, $2); }
1362 | OBJECTNAME protocolrefs
1363 { $$ = get_object_reference ($2); }
1365 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1366 - nisse@lysator.liu.se */
1367 | non_empty_protocolrefs
1368 { $$ = get_object_reference ($1); }
1370 | TYPEOF '(' expr ')'
1371 { $$ = TREE_TYPE ($3); }
1372 | TYPEOF '(' typename ')'
1373 { $$ = groktypename ($3); }
1376 /* typespec_nonreserved_attr does not exist. */
1380 | initdecls ',' maybe_resetattrs initdcl
1385 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1391 | ASM_KEYWORD '(' string ')'
1392 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1398 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 | 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);
1414 notype_declarator maybeasm maybe_attribute '='
1415 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1416 chainon ($3, all_prefix_attributes));
1417 start_init ($<ttype>$, $2, global_bindings_p ()); }
1419 /* Note how the declaration of the variable is in effect while its init is parsed! */
1421 finish_decl ($<ttype>5, $6, $2); }
1422 | notype_declarator maybeasm maybe_attribute
1423 { tree d = start_decl ($1, current_declspecs, 0,
1424 chainon ($3, all_prefix_attributes));
1425 finish_decl (d, NULL_TREE, $2); }
1427 /* the * rules are dummies to accept the Apollo extended syntax
1428 so that the header files compile. */
1439 | attributes attribute
1440 { $$ = chainon ($1, $2); }
1444 ATTRIBUTE '(' '(' attribute_list ')' ')'
1451 | attribute_list ',' attrib
1452 { $$ = chainon ($1, $3); }
1459 { $$ = build_tree_list ($1, NULL_TREE); }
1460 | any_word '(' IDENTIFIER ')'
1461 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1462 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1463 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1464 | any_word '(' exprlist ')'
1465 { $$ = build_tree_list ($1, $3); }
1468 /* This still leaves out most reserved keywords,
1469 shouldn't we include them? */
1478 /* Initializers. `init' is the entry point. */
1483 { really_start_incremental_init (NULL_TREE); }
1484 initlist_maybe_comma '}'
1485 { $$ = pop_init_level (0); }
1487 { $$ = error_mark_node; }
1490 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1491 initlist_maybe_comma:
1494 pedwarn ("ISO C forbids empty initializer braces"); }
1495 | initlist1 maybecomma
1500 | initlist1 ',' initelt
1503 /* `initelt' is a single element of an initializer.
1504 It may use braces. */
1506 designator_list '=' initval
1507 { if (pedantic && ! flag_isoc99)
1508 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1509 | designator initval
1511 pedwarn ("obsolete use of designated initializer without `='"); }
1513 { set_init_label ($1);
1515 pedwarn ("obsolete use of designated initializer with `:'"); }
1522 { push_init_level (0); }
1523 initlist_maybe_comma '}'
1524 { process_init_element (pop_init_level (0)); }
1526 { process_init_element ($1); }
1532 | designator_list designator
1537 { set_init_label ($2); }
1538 /* These are for labeled elements. The syntax for an array element
1539 initializer conflicts with the syntax for an Objective-C message,
1540 so don't include these productions in the Objective-C grammar. */
1542 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1543 { set_init_index ($2, $4);
1545 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1546 | '[' expr_no_commas ']'
1547 { set_init_index ($2, NULL_TREE); }
1554 pedwarn ("ISO C forbids nested functions");
1556 push_function_context ();
1557 if (! start_function (current_declspecs, $1,
1558 all_prefix_attributes))
1560 pop_function_context ();
1564 old_style_parm_decls
1565 { store_parm_decls (); }
1566 /* This used to use compstmt_or_error.
1567 That caused a bug with input `f(g) int g {}',
1568 where the use of YYERROR1 above caused an error
1569 which then was handled by compstmt_or_error.
1570 There followed a repeated execution of that same rule,
1571 which called YYERROR1 again, and so on. */
1572 save_filename save_lineno compstmt
1573 { tree decl = current_function_decl;
1574 DECL_SOURCE_FILE (decl) = $5;
1575 DECL_SOURCE_LINE (decl) = $6;
1576 finish_function (1);
1577 pop_function_context ();
1578 add_decl_stmt (decl); }
1581 notype_nested_function:
1584 pedwarn ("ISO C forbids nested functions");
1586 push_function_context ();
1587 if (! start_function (current_declspecs, $1,
1588 all_prefix_attributes))
1590 pop_function_context ();
1594 old_style_parm_decls
1595 { store_parm_decls (); }
1596 /* This used to use compstmt_or_error.
1597 That caused a bug with input `f(g) int g {}',
1598 where the use of YYERROR1 above caused an error
1599 which then was handled by compstmt_or_error.
1600 There followed a repeated execution of that same rule,
1601 which called YYERROR1 again, and so on. */
1602 save_filename save_lineno compstmt
1603 { tree decl = current_function_decl;
1604 DECL_SOURCE_FILE (decl) = $5;
1605 DECL_SOURCE_LINE (decl) = $6;
1606 finish_function (1);
1607 pop_function_context ();
1608 add_decl_stmt (decl); }
1611 /* Any kind of declarator (thus, all declarators allowed
1612 after an explicit typespec). */
1615 after_type_declarator
1619 /* A declarator that is allowed only after an explicit typespec. */
1621 after_type_declarator:
1622 '(' maybe_attribute after_type_declarator ')'
1623 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1624 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1625 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1626 /* | after_type_declarator '(' error ')' %prec '.'
1627 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1628 poplevel (0, 0, 0); } */
1629 | after_type_declarator array_declarator %prec '.'
1630 { $$ = set_array_declarator_type ($2, $1, 0); }
1631 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1632 { $$ = make_pointer_declarator ($2, $3); }
1639 /* Kinds of declarator that can appear in a parameter list
1640 in addition to notype_declarator. This is like after_type_declarator
1641 but does not allow a typedef name in parentheses as an identifier
1642 (because it would conflict with a function with that typedef as arg). */
1644 parm_declarator_starttypename
1645 | parm_declarator_nostarttypename
1648 parm_declarator_starttypename:
1649 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1650 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1651 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1652 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1653 poplevel (0, 0, 0); } */
1654 | parm_declarator_starttypename array_declarator %prec '.'
1655 { $$ = set_array_declarator_type ($2, $1, 0); }
1662 parm_declarator_nostarttypename:
1663 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1664 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1665 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1666 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1667 poplevel (0, 0, 0); } */
1668 | parm_declarator_nostarttypename array_declarator %prec '.'
1669 { $$ = set_array_declarator_type ($2, $1, 0); }
1670 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1671 { $$ = make_pointer_declarator ($2, $3); }
1672 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1673 { $$ = make_pointer_declarator ($2, $3); }
1674 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1675 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1678 /* A declarator allowed whether or not there has been
1679 an explicit typespec. These cannot redeclare a typedef-name. */
1682 notype_declarator '(' parmlist_or_identifiers %prec '.'
1683 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1684 /* | notype_declarator '(' error ')' %prec '.'
1685 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1686 poplevel (0, 0, 0); } */
1687 | '(' maybe_attribute notype_declarator ')'
1688 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1689 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1690 { $$ = make_pointer_declarator ($2, $3); }
1691 | notype_declarator array_declarator %prec '.'
1692 { $$ = set_array_declarator_type ($2, $1, 0); }
1717 /* structsp_attr: struct/union/enum specifiers that either
1718 end with attributes, or are such that any following attributes would
1719 be parsed as part of the struct/union/enum specifier.
1721 structsp_nonattr: other struct/union/enum specifiers. */
1724 struct_head identifier '{'
1725 { $$ = start_struct (RECORD_TYPE, $2);
1726 /* Start scope of tag before parsing components. */
1728 component_decl_list '}' maybe_attribute
1729 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1730 | struct_head '{' component_decl_list '}' maybe_attribute
1731 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1732 $3, chainon ($1, $5));
1734 | union_head identifier '{'
1735 { $$ = start_struct (UNION_TYPE, $2); }
1736 component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1738 | union_head '{' component_decl_list '}' maybe_attribute
1739 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1740 $3, chainon ($1, $5));
1742 | enum_head identifier '{'
1743 { $$ = start_enum ($2); }
1744 enumlist maybecomma_warn '}' maybe_attribute
1745 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1746 chainon ($1, $8)); }
1748 { $$ = start_enum (NULL_TREE); }
1749 enumlist maybecomma_warn '}' maybe_attribute
1750 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1751 chainon ($1, $7)); }
1755 struct_head identifier
1756 { $$ = xref_tag (RECORD_TYPE, $2); }
1757 | union_head identifier
1758 { $$ = xref_tag (UNION_TYPE, $2); }
1759 | enum_head identifier
1760 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1761 /* In ISO C, enumerated types can be referred to
1762 only if already defined. */
1763 if (pedantic && !COMPLETE_TYPE_P ($$))
1764 pedwarn ("ISO C forbids forward references to `enum' types"); }
1775 { if (pedantic && ! flag_isoc99)
1776 pedwarn ("comma at end of enumerator list"); }
1779 component_decl_list:
1780 component_decl_list2
1782 | component_decl_list2 component_decl
1783 { $$ = chainon ($1, $2);
1784 pedwarn ("no semicolon at end of struct or union"); }
1787 component_decl_list2: /* empty */
1789 | component_decl_list2 component_decl ';'
1790 { $$ = chainon ($1, $2); }
1791 | component_decl_list2 ';'
1793 pedwarn ("extra semicolon in struct or union specified"); }
1795 /* foo(sizeof(struct{ @defs(ClassName)})); */
1796 | DEFS '(' CLASSNAME ')'
1798 tree interface = lookup_interface ($3);
1801 $$ = get_class_ivars (interface);
1804 error ("cannot find interface declaration for `%s'",
1805 IDENTIFIER_POINTER ($3));
1813 declspecs_nosc_ts setspecs components
1815 POP_DECLSPEC_STACK; }
1816 | declspecs_nosc_ts setspecs save_filename save_lineno
1818 /* Support for unnamed structs or unions as members of
1819 structs or unions (which is [a] useful and [b] supports
1822 pedwarn ("ISO C doesn't support unnamed structs/unions");
1824 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1825 POP_DECLSPEC_STACK; }
1826 | declspecs_nosc_nots setspecs components_notype
1828 POP_DECLSPEC_STACK; }
1829 | declspecs_nosc_nots
1831 pedwarn ("ISO C forbids member declarations with no members");
1836 | extension component_decl
1838 RESTORE_WARN_FLAGS ($1); }
1842 component_declarator
1843 | components ',' maybe_resetattrs component_declarator
1844 { $$ = chainon ($1, $4); }
1848 component_notype_declarator
1849 | components_notype ',' maybe_resetattrs component_notype_declarator
1850 { $$ = chainon ($1, $4); }
1853 component_declarator:
1854 save_filename save_lineno declarator maybe_attribute
1855 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1856 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1857 | save_filename save_lineno
1858 declarator ':' expr_no_commas maybe_attribute
1859 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1860 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1861 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1862 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1863 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1866 component_notype_declarator:
1867 save_filename save_lineno notype_declarator maybe_attribute
1868 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1869 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1870 | save_filename save_lineno
1871 notype_declarator ':' expr_no_commas maybe_attribute
1872 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1873 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1874 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1875 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1876 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1879 /* We chain the enumerators in reverse order.
1880 They are put in forward order where enumlist is used.
1881 (The order used to be significant, but no longer is so.
1882 However, we still maintain the order, just to be clean.) */
1886 | enumlist ',' enumerator
1887 { if ($1 == error_mark_node)
1890 $$ = chainon ($3, $1); }
1892 { $$ = error_mark_node; }
1898 { $$ = build_enumerator ($1, NULL_TREE); }
1899 | identifier '=' expr_no_commas
1900 { $$ = build_enumerator ($1, $3); }
1905 { tree specs, attrs;
1906 pending_xref_error ();
1907 split_specs_attrs ($1, &specs, &attrs);
1908 /* We don't yet support attributes here. */
1909 if (attrs != NULL_TREE)
1910 warning ("attributes on type name ignored");
1911 $<ttype>$ = specs; }
1913 { $$ = build_tree_list ($<ttype>2, $3); }
1916 absdcl: /* an absolute declarator */
1922 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1924 { $$ = build_tree_list (build_tree_list (current_declspecs,
1926 all_prefix_attributes); }
1928 { $$ = build_tree_list (build_tree_list (current_declspecs,
1930 all_prefix_attributes); }
1931 | absdcl1_noea attributes
1932 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 chainon ($2, all_prefix_attributes)); }
1937 absdcl1: /* a nonempty absolute declarator */
1944 | '*' maybe_type_quals_attrs absdcl1_noea
1945 { $$ = make_pointer_declarator ($2, $3); }
1949 '*' maybe_type_quals_attrs
1950 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1951 | '*' maybe_type_quals_attrs absdcl1_ea
1952 { $$ = make_pointer_declarator ($2, $3); }
1956 '(' maybe_attribute absdcl1 ')'
1957 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1958 | direct_absdcl1 '(' parmlist
1959 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1960 | direct_absdcl1 array_declarator
1961 { $$ = set_array_declarator_type ($2, $1, 1); }
1963 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1965 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1968 /* The [...] part of a declarator for an array type. */
1972 { $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
1973 | '[' declspecs_nosc expr ']'
1974 { $$ = build_array_declarator ($3, $2, 0, 0); }
1976 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
1977 | '[' declspecs_nosc ']'
1978 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1980 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
1981 | '[' declspecs_nosc '*' ']'
1982 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1983 | '[' SCSPEC expr ']'
1984 { if (C_RID_CODE ($2) != RID_STATIC)
1985 error ("storage class specifier in array declarator");
1986 $$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
1987 | '[' SCSPEC declspecs_nosc expr ']'
1988 { if (C_RID_CODE ($2) != RID_STATIC)
1989 error ("storage class specifier in array declarator");
1990 $$ = build_array_declarator ($4, $3, 1, 0); }
1991 | '[' declspecs_nosc SCSPEC expr ']'
1992 { if (C_RID_CODE ($3) != RID_STATIC)
1993 error ("storage class specifier in array declarator");
1994 $$ = build_array_declarator ($4, $2, 1, 0); }
1997 /* A nonempty series of declarations and statements (possibly followed by
1998 some labels) that can form the body of a compound statement.
1999 NOTE: we don't allow labels on declarations; this might seem like a
2000 natural extension, but there would be a conflict between attributes
2001 on the label and prefix attributes on the declaration. */
2004 lineno_stmt_decl_or_labels_ending_stmt
2005 | lineno_stmt_decl_or_labels_ending_decl
2006 | lineno_stmt_decl_or_labels_ending_label
2008 pedwarn ("deprecated use of label at end of compound statement");
2010 | lineno_stmt_decl_or_labels_ending_error
2013 lineno_stmt_decl_or_labels_ending_stmt:
2015 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2016 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2017 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2018 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2021 lineno_stmt_decl_or_labels_ending_decl:
2023 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2024 { if (pedantic && !flag_isoc99)
2025 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2026 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2027 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2030 lineno_stmt_decl_or_labels_ending_label:
2032 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2033 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2034 | lineno_stmt_decl_or_labels_ending_label lineno_label
2035 | lineno_stmt_decl_or_labels_ending_error lineno_label
2038 lineno_stmt_decl_or_labels_ending_error:
2040 | lineno_stmt_decl_or_labels errstmt
2043 lineno_stmt_decl_or_labels:
2044 lineno_stmt_decl_or_labels_ending_stmt
2045 | lineno_stmt_decl_or_labels_ending_decl
2046 | lineno_stmt_decl_or_labels_ending_label
2047 | lineno_stmt_decl_or_labels_ending_error
2053 pushlevel: /* empty */
2056 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2058 if (objc_method_context)
2064 poplevel: /* empty */
2065 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2067 /* Start and end blocks created for the new scopes of C99. */
2068 c99_block_start: /* empty */
2071 $$ = c_begin_compound_stmt ();
2074 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2076 if (objc_method_context)
2085 /* Productions using c99_block_start and c99_block_end will need to do what's
2086 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2087 $1 is the value of c99_block_start and $2 of c99_block_end. */
2088 c99_block_end: /* empty */
2091 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2092 $$ = poplevel (kept_level_p (), 0, 0);
2093 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2094 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2101 /* Read zero or more forward-declarations for labels
2102 that nested functions can jump to. */
2107 pedwarn ("ISO C forbids label declarations"); }
2112 | label_decls label_decl
2116 LABEL identifiers_or_typenames ';'
2118 for (link = $2; link; link = TREE_CHAIN (link))
2120 tree label = shadow_label (TREE_VALUE (link));
2121 C_DECLARED_LABEL_FLAG (label) = 1;
2122 add_decl_stmt (label);
2127 /* This is the body of a function definition.
2128 It causes syntax errors to ignore to the next openbrace. */
2135 compstmt_start: '{' { compstmt_count++;
2136 $$ = c_begin_compound_stmt (); }
2138 compstmt_nostart: '}'
2139 { $$ = convert (void_type_node, integer_zero_node); }
2140 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2141 { $$ = poplevel (kept_level_p (), 1, 0);
2142 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2143 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2147 compstmt_contents_nonempty:
2152 compstmt_primary_start:
2154 { if (current_function_decl == 0)
2156 error ("braced-group within expression allowed only inside a function");
2159 /* We must force a BLOCK for this level
2160 so that, if it is not expanded later,
2161 there is a way to turn off the entire subtree of blocks
2162 that are contained in it. */
2164 push_label_level ();
2166 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2169 compstmt: compstmt_start compstmt_nostart
2170 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2174 /* Value is number of statements counted as of the closeparen. */
2176 if_prefix c99_block_lineno_labeled_stmt
2177 { c_finish_then (); }
2178 /* Make sure c_expand_end_cond is run once
2179 for each call to c_expand_start_cond.
2180 Otherwise a crash is likely. */
2186 { c_expand_start_cond (truthvalue_conversion ($3),
2188 $<itype>$ = stmt_count;
2189 if_stmt_file = $<filename>-2;
2190 if_stmt_line = $<lineno>-1; }
2193 /* This is a subroutine of stmt.
2194 It is used twice, once for valid DO statements
2195 and once for catching errors in parsing the end test. */
2201 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2203 /* In the event that a parse error prevents
2204 parsing the complete do-statement, set the
2205 condition now. Otherwise, we can get crashes at
2206 RTL-generation time. */
2207 DO_COND ($<ttype>$) = error_mark_node; }
2208 c99_block_lineno_labeled_stmt WHILE
2210 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2213 /* The forced readahead in here is because we might be at the end of a
2214 line, and the line and file won't be bumped until yylex absorbs the
2215 first token on the next line. */
2217 { if (yychar == YYEMPTY)
2219 $$ = input_filename; }
2223 { if (yychar == YYEMPTY)
2228 lineno_labeled_stmt:
2230 | lineno_label lineno_labeled_stmt
2233 /* Like lineno_labeled_stmt, but a block in C99. */
2234 c99_block_lineno_labeled_stmt:
2235 c99_block_start lineno_labeled_stmt c99_block_end
2237 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2241 save_filename save_lineno stmt
2244 STMT_LINENO ($3) = $2;
2245 /* ??? We currently have no way of recording
2246 the filename for a statement. This probably
2247 matters little in practice at the moment,
2248 but I suspect that problems will occur when
2249 doing inlining at the tree level. */
2255 save_filename save_lineno label
2258 STMT_LINENO ($3) = $2;
2263 select_or_iter_stmt:
2265 { c_expand_start_else ();
2266 $<itype>1 = stmt_count; }
2267 c99_block_lineno_labeled_stmt
2269 c_expand_end_cond ();
2270 if (extra_warnings && stmt_count == $<itype>1)
2271 warning ("empty body in an else-statement"); }
2272 | simple_if %prec IF
2273 { c_expand_end_cond ();
2274 /* This warning is here instead of in simple_if, because we
2275 do not want a warning if an empty if is followed by an
2276 else statement. Increment stmt_count so we don't
2277 give a second error if this is a nested `if'. */
2278 if (extra_warnings && stmt_count++ == $<itype>1)
2279 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2280 "empty body in an if-statement"); }
2281 /* Make sure c_expand_end_cond is run once
2282 for each call to c_expand_start_cond.
2283 Otherwise a crash is likely. */
2284 | simple_if ELSE error
2285 { c_expand_end_cond (); }
2289 { $4 = truthvalue_conversion ($4);
2291 = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
2292 c99_block_lineno_labeled_stmt
2293 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2296 { DO_COND ($1) = truthvalue_conversion ($3); }
2297 | do_stmt_start error
2300 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2301 NULL_TREE, NULL_TREE);
2302 add_stmt ($<ttype>$); }
2305 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2308 FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
2310 { FOR_EXPR ($<ttype>2) = $9; }
2311 c99_block_lineno_labeled_stmt
2312 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2313 | SWITCH '(' expr ')'
2315 $<ttype>$ = c_start_case ($3); }
2316 c99_block_lineno_labeled_stmt
2317 { c_finish_case (); }
2322 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2324 { check_for_loop_decls (); }
2327 /* Parse a single real statement, not including any labels. */
2330 { stmt_count++; $$ = $1; }
2333 $$ = c_expand_expr_stmt ($1); }
2334 | c99_block_start select_or_iter_stmt c99_block_end
2336 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2340 $$ = add_stmt (build_break_stmt ()); }
2343 $$ = add_stmt (build_continue_stmt ()); }
2346 $$ = c_expand_return (NULL_TREE); }
2349 $$ = c_expand_return ($2); }
2350 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2352 $$ = simple_asm_stmt ($4); }
2353 /* This is the case with just output operands. */
2354 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2356 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2357 /* This is the case with input operands as well. */
2358 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2359 asm_operands ')' ';'
2361 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2362 /* This is the case with clobbered registers as well. */
2363 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2364 asm_operands ':' asm_clobbers ')' ';'
2366 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2367 | GOTO identifier ';'
2370 decl = lookup_label ($2);
2373 TREE_USED (decl) = 1;
2374 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2381 pedwarn ("ISO C forbids `goto *expr;'");
2383 $3 = convert (ptr_type_node, $3);
2384 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2389 /* Any kind of label, including jump labels and case labels.
2390 ANSI C accepts labels only before statements, but we allow them
2391 also at the end of a compound statement. */
2393 label: CASE expr_no_commas ':'
2395 $$ = do_case ($2, NULL_TREE); }
2396 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2398 $$ = do_case ($2, $4); }
2401 $$ = do_case (NULL_TREE, NULL_TREE); }
2402 | identifier save_filename save_lineno ':' maybe_attribute
2403 { tree label = define_label ($2, $3, $1);
2407 decl_attributes (&label, $5, 0);
2408 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2415 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2419 { emit_line_note (input_filename, lineno);
2422 { emit_line_note (input_filename, lineno); }
2431 /* These are the operands other than the first string and colon
2432 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2433 asm_operands: /* empty */
2435 | nonnull_asm_operands
2438 nonnull_asm_operands:
2440 | nonnull_asm_operands ',' asm_operand
2441 { $$ = chainon ($1, $3); }
2446 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2447 | '[' identifier ']' STRING '(' expr ')'
2448 { $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2453 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2454 | asm_clobbers ',' string
2455 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2458 /* This is what appears inside the parens in a function declarator.
2459 Its value is a list of ..._TYPE nodes. Attributes must appear here
2460 to avoid a conflict with their appearance after an open parenthesis
2461 in an abstract declarator, as in
2462 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2466 clear_parm_order ();
2467 declare_parm_level (0); }
2470 parmlist_tags_warning ();
2471 poplevel (0, 0, 0); }
2479 pedwarn ("ISO C forbids forward parameter declarations");
2480 /* Mark the forward decls as such. */
2481 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2482 TREE_ASM_WRITTEN (parm) = 1;
2483 clear_parm_order (); }
2485 { /* Dummy action so attributes are in known place
2486 on parser stack. */ }
2490 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2493 /* This is what appears inside the parens in a function declarator.
2494 Is value is represented in the format that grokdeclarator expects. */
2495 parmlist_2: /* empty */
2496 { $$ = get_parm_info (0); }
2498 { $$ = get_parm_info (0);
2499 /* Gcc used to allow this as an extension. However, it does
2500 not work for all targets, and thus has been disabled.
2501 Also, since func (...) and func () are indistinguishable,
2502 it caused problems with the code in expand_builtin which
2503 tries to verify that BUILT_IN_NEXT_ARG is being used
2505 error ("ISO C requires a named argument before `...'");
2508 { $$ = get_parm_info (1); }
2509 | parms ',' ELLIPSIS
2510 { $$ = get_parm_info (0); }
2515 { push_parm_decl ($1); }
2517 { push_parm_decl ($3); }
2520 /* A single parameter declaration or parameter type name,
2521 as found in a parmlist. */
2523 declspecs_ts setspecs parm_declarator maybe_attribute
2524 { $$ = build_tree_list (build_tree_list (current_declspecs,
2526 chainon ($4, all_prefix_attributes));
2527 POP_DECLSPEC_STACK; }
2528 | declspecs_ts setspecs notype_declarator maybe_attribute
2529 { $$ = build_tree_list (build_tree_list (current_declspecs,
2531 chainon ($4, all_prefix_attributes));
2532 POP_DECLSPEC_STACK; }
2533 | declspecs_ts setspecs absdcl_maybe_attribute
2535 POP_DECLSPEC_STACK; }
2536 | declspecs_nots setspecs notype_declarator maybe_attribute
2537 { $$ = build_tree_list (build_tree_list (current_declspecs,
2539 chainon ($4, all_prefix_attributes));
2540 POP_DECLSPEC_STACK; }
2542 | declspecs_nots setspecs absdcl_maybe_attribute
2544 POP_DECLSPEC_STACK; }
2547 /* The first parm, which must suck attributes from off the top of the parser
2550 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2551 { $$ = build_tree_list (build_tree_list (current_declspecs,
2553 chainon ($4, all_prefix_attributes));
2554 POP_DECLSPEC_STACK; }
2555 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2556 { $$ = build_tree_list (build_tree_list (current_declspecs,
2558 chainon ($4, all_prefix_attributes));
2559 POP_DECLSPEC_STACK; }
2560 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2562 POP_DECLSPEC_STACK; }
2563 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2564 { $$ = build_tree_list (build_tree_list (current_declspecs,
2566 chainon ($4, all_prefix_attributes));
2567 POP_DECLSPEC_STACK; }
2569 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2571 POP_DECLSPEC_STACK; }
2576 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2577 all_prefix_attributes = prefix_attributes; }
2580 /* This is used in a function definition
2581 where either a parmlist or an identifier list is ok.
2582 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2583 parmlist_or_identifiers:
2585 clear_parm_order ();
2586 declare_parm_level (1); }
2587 parmlist_or_identifiers_1
2589 parmlist_tags_warning ();
2590 poplevel (0, 0, 0); }
2593 parmlist_or_identifiers_1:
2597 for (t = $1; t; t = TREE_CHAIN (t))
2598 if (TREE_VALUE (t) == NULL_TREE)
2599 error ("`...' in old-style identifier list");
2600 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2603 /* A nonempty list of identifiers. */
2606 { $$ = build_tree_list (NULL_TREE, $1); }
2607 | identifiers ',' IDENTIFIER
2608 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2611 /* A nonempty list of identifiers, including typenames. */
2612 identifiers_or_typenames:
2614 { $$ = build_tree_list (NULL_TREE, $1); }
2615 | identifiers_or_typenames ',' identifier
2616 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2621 { $$ = SAVE_WARN_FLAGS();
2623 warn_pointer_arith = 0; }
2627 /* Objective-C productions. */
2637 if (objc_implementation_context)
2639 finish_class (objc_implementation_context);
2640 objc_ivar_chain = NULL_TREE;
2641 objc_implementation_context = NULL_TREE;
2644 warning ("`@end' must appear in an implementation context");
2648 /* A nonempty list of identifiers. */
2651 { $$ = build_tree_list (NULL_TREE, $1); }
2652 | identifier_list ',' identifier
2653 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2657 CLASS identifier_list ';'
2659 objc_declare_class ($2);
2663 ALIAS identifier identifier ';'
2665 objc_declare_alias ($2, $3);
2669 INTERFACE identifier protocolrefs '{'
2671 objc_interface_context = objc_ivar_context
2672 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2673 objc_public_flag = 0;
2677 continue_class (objc_interface_context);
2682 finish_class (objc_interface_context);
2683 objc_interface_context = NULL_TREE;
2686 | INTERFACE identifier protocolrefs
2688 objc_interface_context
2689 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2690 continue_class (objc_interface_context);
2695 finish_class (objc_interface_context);
2696 objc_interface_context = NULL_TREE;
2699 | INTERFACE identifier ':' identifier protocolrefs '{'
2701 objc_interface_context = objc_ivar_context
2702 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2703 objc_public_flag = 0;
2707 continue_class (objc_interface_context);
2712 finish_class (objc_interface_context);
2713 objc_interface_context = NULL_TREE;
2716 | INTERFACE identifier ':' identifier protocolrefs
2718 objc_interface_context
2719 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2720 continue_class (objc_interface_context);
2725 finish_class (objc_interface_context);
2726 objc_interface_context = NULL_TREE;
2729 | IMPLEMENTATION identifier '{'
2731 objc_implementation_context = objc_ivar_context
2732 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2733 objc_public_flag = 0;
2738 = continue_class (objc_implementation_context);
2741 | IMPLEMENTATION identifier
2743 objc_implementation_context
2744 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2746 = continue_class (objc_implementation_context);
2749 | IMPLEMENTATION identifier ':' identifier '{'
2751 objc_implementation_context = objc_ivar_context
2752 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2753 objc_public_flag = 0;
2758 = continue_class (objc_implementation_context);
2761 | IMPLEMENTATION identifier ':' identifier
2763 objc_implementation_context
2764 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2766 = continue_class (objc_implementation_context);
2769 | INTERFACE identifier '(' identifier ')' protocolrefs
2771 objc_interface_context
2772 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2773 continue_class (objc_interface_context);
2778 finish_class (objc_interface_context);
2779 objc_interface_context = NULL_TREE;
2782 | IMPLEMENTATION identifier '(' identifier ')'
2784 objc_implementation_context
2785 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2787 = continue_class (objc_implementation_context);
2792 PROTOCOL identifier protocolrefs
2794 objc_pq_context = 1;
2795 objc_interface_context
2796 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2800 objc_pq_context = 0;
2801 finish_protocol(objc_interface_context);
2802 objc_interface_context = NULL_TREE;
2804 /* The @protocol forward-declaration production introduces a
2805 reduce/reduce conflict on ';', which should be resolved in
2806 favor of the production 'identifier_list -> identifier'. */
2807 | PROTOCOL identifier_list ';'
2809 objc_declare_protocols ($2);
2818 | non_empty_protocolrefs
2821 non_empty_protocolrefs:
2822 ARITHCOMPARE identifier_list ARITHCOMPARE
2824 if ($1 == LT_EXPR && $3 == GT_EXPR)
2832 ivar_decl_list visibility_spec ivar_decls
2837 PRIVATE { objc_public_flag = 2; }
2838 | PROTECTED { objc_public_flag = 0; }
2839 | PUBLIC { objc_public_flag = 1; }
2847 | ivar_decls ivar_decl ';'
2851 pedwarn ("extra semicolon in struct or union specified");
2856 /* There is a shift-reduce conflict here, because `components' may
2857 start with a `typename'. It happens that shifting (the default resolution)
2858 does the right thing, because it treats the `typename' as part of
2859 a `typed_typespecs'.
2861 It is possible that this same technique would allow the distinction
2862 between `notype_initdecls' and `initdecls' to be eliminated.
2863 But I am being cautious and not trying it. */
2866 declspecs_nosc_ts setspecs ivars
2868 POP_DECLSPEC_STACK; }
2869 | declspecs_nosc_nots setspecs ivars
2871 POP_DECLSPEC_STACK; }
2880 | ivars ',' maybe_resetattrs ivar_declarator
2886 $$ = add_instance_variable (objc_ivar_context,
2888 $1, current_declspecs,
2891 | declarator ':' expr_no_commas
2893 $$ = add_instance_variable (objc_ivar_context,
2895 $1, current_declspecs, $3);
2897 | ':' expr_no_commas
2899 $$ = add_instance_variable (objc_ivar_context,
2902 current_declspecs, $2);
2908 { objc_inherit_code = CLASS_METHOD_DECL; }
2910 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2916 objc_pq_context = 1;
2917 if (!objc_implementation_context)
2918 fatal_error ("method definition not in class context");
2922 objc_pq_context = 0;
2923 if (objc_inherit_code == CLASS_METHOD_DECL)
2924 add_class_method (objc_implementation_context, $3);
2926 add_instance_method (objc_implementation_context, $3);
2927 start_method_def ($3);
2931 continue_method_def ();
2935 finish_method_def ();
2939 /* the reason for the strange actions in this rule
2940 is so that notype_initdecls when reached via datadef
2941 can find a valid list of type and sc specs in $0. */
2945 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2948 methodprotolist2: /* eliminates a shift/reduce conflict */
2951 | methodprotolist2 methodproto
2952 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2963 /* Remember protocol qualifiers in prototypes. */
2964 objc_pq_context = 1;
2968 /* Forget protocol qualifiers here. */
2969 objc_pq_context = 0;
2970 if (objc_inherit_code == CLASS_METHOD_DECL)
2971 add_class_method (objc_interface_context, $3);
2973 add_instance_method (objc_interface_context, $3);
2979 '(' typename ')' unaryselector
2981 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2986 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2989 | '(' typename ')' keywordselector optparmlist
2991 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2994 | keywordselector optparmlist
2996 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3000 /* "optarglist" assumes that start_method_def has already been called...
3001 if it is not, the "xdecls" will not be placed in the proper scope */
3008 /* to get around the following situation: "int foo (int a) int b; {}" that
3009 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3024 declspecs_ts setspecs myparms ';'
3025 { POP_DECLSPEC_STACK; }
3027 { shadow_tag ($1); }
3028 | declspecs_nots ';'
3029 { pedwarn ("empty declaration"); }
3034 { push_parm_decl ($1); }
3035 | myparms ',' myparm
3036 { push_parm_decl ($3); }
3039 /* A single parameter declaration or parameter type name,
3040 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3043 parm_declarator maybe_attribute
3044 { $$ = build_tree_list (build_tree_list (current_declspecs,
3046 chainon ($2, all_prefix_attributes)); }
3047 | notype_declarator maybe_attribute
3048 { $$ = build_tree_list (build_tree_list (current_declspecs,
3050 chainon ($2, all_prefix_attributes)); }
3051 | absdcl_maybe_attribute
3062 /* oh what a kludge! */
3063 $$ = objc_ellipsis_node;
3071 /* returns a tree list node generated by get_parm_info */
3084 | keywordselector keyworddecl
3086 $$ = chainon ($1, $2);
3099 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3100 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3101 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3102 | TYPESPEC | TYPE_QUAL
3106 selector ':' '(' typename ')' identifier
3108 $$ = build_keyword_decl ($1, $4, $6);
3111 | selector ':' identifier
3113 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3116 | ':' '(' typename ')' identifier
3118 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3123 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3134 | keywordarglist keywordarg
3136 $$ = chainon ($1, $2);
3144 if (TREE_CHAIN ($1) == NULL_TREE)
3145 /* just return the expr., remove a level of indirection */
3146 $$ = TREE_VALUE ($1);
3148 /* we have a comma expr., we will collapse later */
3154 selector ':' keywordexpr
3156 $$ = build_tree_list ($1, $3);
3160 $$ = build_tree_list (NULL_TREE, $2);
3168 $$ = get_class_reference ($1);
3174 { objc_receiver_context = 1; }
3176 { objc_receiver_context = 0; }
3179 $$ = build_tree_list ($3, $5);
3190 | keywordnamelist keywordname
3192 $$ = chainon ($1, $2);
3199 $$ = build_tree_list ($1, NULL_TREE);
3203 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3208 SELECTOR '(' selectorarg ')'
3215 PROTOCOL '(' identifier ')'
3221 /* extension to support C-structures in the archiver */
3224 ENCODE '(' typename ')'
3226 $$ = groktypename ($3);
3233 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3234 cpplib.h's token codes into yacc's token codes. */
3236 static enum cpp_ttype last_token;
3238 /* The reserved keyword table. */
3242 ENUM_BITFIELD(rid) rid : 16;
3243 unsigned int disable : 16;
3246 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3248 #define D_TRAD 0x01 /* not in traditional C */
3249 #define D_C89 0x02 /* not in C89 */
3250 #define D_EXT 0x04 /* GCC extension */
3251 #define D_EXT89 0x08 /* GCC extension incorporated in C99 */
3252 #define D_OBJC 0x10 /* Objective C only */
3254 static const struct resword reswords[] =
3256 { "_Bool", RID_BOOL, 0 },
3257 { "_Complex", RID_COMPLEX, 0 },
3258 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3259 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3260 { "__alignof", RID_ALIGNOF, 0 },
3261 { "__alignof__", RID_ALIGNOF, 0 },
3262 { "__asm", RID_ASM, 0 },
3263 { "__asm__", RID_ASM, 0 },
3264 { "__attribute", RID_ATTRIBUTE, 0 },
3265 { "__attribute__", RID_ATTRIBUTE, 0 },
3266 { "__bounded", RID_BOUNDED, 0 },
3267 { "__bounded__", RID_BOUNDED, 0 },
3268 { "__builtin_va_arg", RID_VA_ARG, 0 },
3269 { "__complex", RID_COMPLEX, 0 },
3270 { "__complex__", RID_COMPLEX, 0 },
3271 { "__const", RID_CONST, 0 },
3272 { "__const__", RID_CONST, 0 },
3273 { "__extension__", RID_EXTENSION, 0 },
3274 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3275 { "__imag", RID_IMAGPART, 0 },
3276 { "__imag__", RID_IMAGPART, 0 },
3277 { "__inline", RID_INLINE, 0 },
3278 { "__inline__", RID_INLINE, 0 },
3279 { "__label__", RID_LABEL, 0 },
3280 { "__ptrbase", RID_PTRBASE, 0 },
3281 { "__ptrbase__", RID_PTRBASE, 0 },
3282 { "__ptrextent", RID_PTREXTENT, 0 },
3283 { "__ptrextent__", RID_PTREXTENT, 0 },
3284 { "__ptrvalue", RID_PTRVALUE, 0 },
3285 { "__ptrvalue__", RID_PTRVALUE, 0 },
3286 { "__real", RID_REALPART, 0 },
3287 { "__real__", RID_REALPART, 0 },
3288 { "__restrict", RID_RESTRICT, 0 },
3289 { "__restrict__", RID_RESTRICT, 0 },
3290 { "__signed", RID_SIGNED, 0 },
3291 { "__signed__", RID_SIGNED, 0 },
3292 { "__typeof", RID_TYPEOF, 0 },
3293 { "__typeof__", RID_TYPEOF, 0 },
3294 { "__unbounded", RID_UNBOUNDED, 0 },
3295 { "__unbounded__", RID_UNBOUNDED, 0 },
3296 { "__volatile", RID_VOLATILE, 0 },
3297 { "__volatile__", RID_VOLATILE, 0 },
3298 { "asm", RID_ASM, D_EXT },
3299 { "auto", RID_AUTO, 0 },
3300 { "break", RID_BREAK, 0 },
3301 { "case", RID_CASE, 0 },
3302 { "char", RID_CHAR, 0 },
3303 { "const", RID_CONST, D_TRAD },
3304 { "continue", RID_CONTINUE, 0 },
3305 { "default", RID_DEFAULT, 0 },
3306 { "do", RID_DO, 0 },
3307 { "double", RID_DOUBLE, 0 },
3308 { "else", RID_ELSE, 0 },
3309 { "enum", RID_ENUM, 0 },
3310 { "extern", RID_EXTERN, 0 },
3311 { "float", RID_FLOAT, 0 },
3312 { "for", RID_FOR, 0 },
3313 { "goto", RID_GOTO, 0 },
3314 { "if", RID_IF, 0 },
3315 { "inline", RID_INLINE, D_TRAD|D_EXT89 },
3316 { "int", RID_INT, 0 },
3317 { "long", RID_LONG, 0 },
3318 { "register", RID_REGISTER, 0 },
3319 { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
3320 { "return", RID_RETURN, 0 },
3321 { "short", RID_SHORT, 0 },
3322 { "signed", RID_SIGNED, D_TRAD },
3323 { "sizeof", RID_SIZEOF, 0 },
3324 { "static", RID_STATIC, 0 },
3325 { "struct", RID_STRUCT, 0 },
3326 { "switch", RID_SWITCH, 0 },
3327 { "typedef", RID_TYPEDEF, 0 },
3328 { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
3329 { "union", RID_UNION, 0 },
3330 { "unsigned", RID_UNSIGNED, 0 },
3331 { "void", RID_VOID, 0 },
3332 { "volatile", RID_VOLATILE, D_TRAD },
3333 { "while", RID_WHILE, 0 },
3335 { "id", RID_ID, D_OBJC },
3337 /* These objc keywords are recognized only immediately after
3339 { "class", RID_AT_CLASS, D_OBJC },
3340 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3341 { "defs", RID_AT_DEFS, D_OBJC },
3342 { "encode", RID_AT_ENCODE, D_OBJC },
3343 { "end", RID_AT_END, D_OBJC },
3344 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3345 { "interface", RID_AT_INTERFACE, D_OBJC },
3346 { "private", RID_AT_PRIVATE, D_OBJC },
3347 { "protected", RID_AT_PROTECTED, D_OBJC },
3348 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3349 { "public", RID_AT_PUBLIC, D_OBJC },
3350 { "selector", RID_AT_SELECTOR, D_OBJC },
3352 /* These are recognized only in protocol-qualifier context
3354 { "bycopy", RID_BYCOPY, D_OBJC },
3355 { "byref", RID_BYREF, D_OBJC },
3356 { "in", RID_IN, D_OBJC },
3357 { "inout", RID_INOUT, D_OBJC },
3358 { "oneway", RID_ONEWAY, D_OBJC },
3359 { "out", RID_OUT, D_OBJC },
3362 #define N_reswords (sizeof reswords / sizeof (struct resword))
3364 /* Table mapping from RID_* constants to yacc token numbers.
3365 Unfortunately we have to have entries for all the keywords in all
3367 static const short rid_to_yy[RID_MAX] =
3369 /* RID_STATIC */ SCSPEC,
3370 /* RID_UNSIGNED */ TYPESPEC,
3371 /* RID_LONG */ TYPESPEC,
3372 /* RID_CONST */ TYPE_QUAL,
3373 /* RID_EXTERN */ SCSPEC,
3374 /* RID_REGISTER */ SCSPEC,
3375 /* RID_TYPEDEF */ SCSPEC,
3376 /* RID_SHORT */ TYPESPEC,
3377 /* RID_INLINE */ SCSPEC,
3378 /* RID_VOLATILE */ TYPE_QUAL,
3379 /* RID_SIGNED */ TYPESPEC,
3380 /* RID_AUTO */ SCSPEC,
3381 /* RID_RESTRICT */ TYPE_QUAL,
3384 /* RID_BOUNDED */ TYPE_QUAL,
3385 /* RID_UNBOUNDED */ TYPE_QUAL,
3386 /* RID_COMPLEX */ TYPESPEC,
3390 /* RID_VIRTUAL */ 0,
3391 /* RID_EXPLICIT */ 0,
3393 /* RID_MUTABLE */ 0,
3396 /* RID_IN */ TYPE_QUAL,
3397 /* RID_OUT */ TYPE_QUAL,
3398 /* RID_INOUT */ TYPE_QUAL,
3399 /* RID_BYCOPY */ TYPE_QUAL,
3400 /* RID_BYREF */ TYPE_QUAL,
3401 /* RID_ONEWAY */ TYPE_QUAL,
3404 /* RID_INT */ TYPESPEC,
3405 /* RID_CHAR */ TYPESPEC,
3406 /* RID_FLOAT */ TYPESPEC,
3407 /* RID_DOUBLE */ TYPESPEC,
3408 /* RID_VOID */ TYPESPEC,
3409 /* RID_ENUM */ ENUM,
3410 /* RID_STRUCT */ STRUCT,
3411 /* RID_UNION */ UNION,
3413 /* RID_ELSE */ ELSE,
3414 /* RID_WHILE */ WHILE,
3417 /* RID_SWITCH */ SWITCH,
3418 /* RID_CASE */ CASE,
3419 /* RID_DEFAULT */ DEFAULT,
3420 /* RID_BREAK */ BREAK,
3421 /* RID_CONTINUE */ CONTINUE,
3422 /* RID_RETURN */ RETURN,
3423 /* RID_GOTO */ GOTO,
3424 /* RID_SIZEOF */ SIZEOF,
3427 /* RID_ASM */ ASM_KEYWORD,
3428 /* RID_TYPEOF */ TYPEOF,
3429 /* RID_ALIGNOF */ ALIGNOF,
3430 /* RID_ATTRIBUTE */ ATTRIBUTE,
3431 /* RID_VA_ARG */ VA_ARG,
3432 /* RID_EXTENSION */ EXTENSION,
3433 /* RID_IMAGPART */ IMAGPART,
3434 /* RID_REALPART */ REALPART,
3435 /* RID_LABEL */ LABEL,
3436 /* RID_PTRBASE */ PTR_BASE,
3437 /* RID_PTREXTENT */ PTR_EXTENT,
3438 /* RID_PTRVALUE */ PTR_VALUE,
3440 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3441 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3442 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3445 /* RID_BOOL */ TYPESPEC,
3449 /* RID_PRIVATE */ 0,
3450 /* RID_PROTECTED */ 0,
3451 /* RID_TEMPLATE */ 0,
3456 /* RID_NAMESPACE */ 0,
3458 /* RID_OPERATOR */ 0,
3463 /* RID_TYPENAME */ 0,
3468 /* RID_CONSTCAST */ 0,
3469 /* RID_DYNCAST */ 0,
3470 /* RID_REINTCAST */ 0,
3471 /* RID_STATCAST */ 0,
3473 /* alternate spellings */
3487 /* RID_ID */ OBJECTNAME,
3488 /* RID_AT_ENCODE */ ENCODE,
3489 /* RID_AT_END */ END,
3490 /* RID_AT_CLASS */ CLASS,
3491 /* RID_AT_ALIAS */ ALIAS,
3492 /* RID_AT_DEFS */ DEFS,
3493 /* RID_AT_PRIVATE */ PRIVATE,
3494 /* RID_AT_PROTECTED */ PROTECTED,
3495 /* RID_AT_PUBLIC */ PUBLIC,
3496 /* RID_AT_PROTOCOL */ PROTOCOL,
3497 /* RID_AT_SELECTOR */ SELECTOR,
3498 /* RID_AT_INTERFACE */ INTERFACE,
3499 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3507 int mask = (flag_isoc99 ? 0 : D_C89)
3508 | (flag_traditional ? D_TRAD : 0)
3509 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3511 if (c_language != clk_objective_c)
3514 /* It is not necessary to register ridpointers as a GC root, because
3515 all the trees it points to are permanently interned in the
3516 get_identifier hash anyway. */
3517 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3518 for (i = 0; i < N_reswords; i++)
3520 /* If a keyword is disabled, do not enter it into the table
3521 and so create a canonical spelling that isn't a keyword. */
3522 if (reswords[i].disable & mask)
3525 id = get_identifier (reswords[i].word);
3526 C_RID_CODE (id) = reswords[i].rid;
3527 C_IS_RESERVED_WORD (id) = 1;
3528 ridpointers [(int) reswords[i].rid] = id;
3532 #define NAME(type) cpp_type2name (type)
3538 const char *string = _(msgid);
3540 if (last_token == CPP_EOF)
3541 error ("%s at end of input", string);
3542 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3544 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3545 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3546 if (val <= UCHAR_MAX && ISGRAPH (val))
3547 error ("%s before %s'%c'", string, ell, val);
3549 error ("%s before %s'\\x%x'", string, ell, val);
3551 else if (last_token == CPP_STRING
3552 || last_token == CPP_WSTRING)
3553 error ("%s before string constant", string);
3554 else if (last_token == CPP_NUMBER)
3555 error ("%s before numeric constant", string);
3556 else if (last_token == CPP_NAME)
3557 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3559 error ("%s before '%s' token", string, NAME(last_token));
3568 int objc_force_identifier = objc_need_raw_identifier;
3569 OBJC_NEED_RAW_IDENTIFIER (0);
3572 if (C_IS_RESERVED_WORD (yylval.ttype))
3574 enum rid rid_code = C_RID_CODE (yylval.ttype);
3577 /* Turn non-typedefed refs to "id" into plain identifiers; this
3578 allows constructs like "void foo(id id);" to work. */
3579 if (rid_code == RID_ID)
3581 decl = lookup_name (yylval.ttype);
3582 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3586 if (!OBJC_IS_AT_KEYWORD (rid_code)
3587 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3590 int yycode = rid_to_yy[(int) rid_code];
3591 if (yycode == STRING_FUNC_NAME)
3593 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3594 to string constants. */
3595 const char *name = fname_string (rid_code);
3597 yylval.ttype = build_string (strlen (name) + 1, name);
3598 last_token = CPP_STRING; /* so yyerror won't choke */
3602 /* Return the canonical spelling for this keyword. */
3603 yylval.ttype = ridpointers[(int) rid_code];
3608 decl = lookup_name (yylval.ttype);
3611 if (TREE_CODE (decl) == TYPE_DECL)
3617 tree objc_interface_decl = is_class_name (yylval.ttype);
3618 /* ObjC class names are in the same namespace as variables and
3619 typedefs, and hence are shadowed by local declarations. */
3620 if (objc_interface_decl
3621 && (global_bindings_p ()
3622 || (!objc_force_identifier && !decl)))
3624 yylval.ttype = objc_interface_decl;
3638 last_token = c_lex (&yylval.ttype);
3641 case CPP_EQ: return '=';
3642 case CPP_NOT: return '!';
3643 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3644 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3645 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3646 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3647 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3648 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3649 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3650 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3651 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3652 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3653 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3654 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3656 case CPP_COMPL: return '~';
3657 case CPP_AND_AND: return ANDAND;
3658 case CPP_OR_OR: return OROR;
3659 case CPP_QUERY: return '?';
3660 case CPP_OPEN_PAREN: return '(';
3661 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3662 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3663 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3664 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3666 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3667 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3668 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3669 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3670 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3671 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3672 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3673 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3674 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3675 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3677 case CPP_OPEN_SQUARE: return '[';
3678 case CPP_CLOSE_SQUARE: return ']';
3679 case CPP_OPEN_BRACE: return '{';
3680 case CPP_CLOSE_BRACE: return '}';
3681 case CPP_ELLIPSIS: return ELLIPSIS;
3683 case CPP_PLUS_PLUS: return PLUSPLUS;
3684 case CPP_MINUS_MINUS: return MINUSMINUS;
3685 case CPP_DEREF: return POINTSAT;
3686 case CPP_DOT: return '.';
3688 /* The following tokens may affect the interpretation of any
3689 identifiers following, if doing Objective-C. */
3690 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3691 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3692 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3693 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3699 return yylexname ();
3710 /* This token is Objective-C specific. It gives the next token
3711 special significance. */
3716 enum cpp_ttype after_at_type;
3718 after_at_type = c_lex (&after_at);
3720 if (after_at_type == CPP_NAME
3721 && C_IS_RESERVED_WORD (after_at)
3722 && OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
3724 yylval.ttype = after_at;
3725 last_token = after_at_type;
3726 return rid_to_yy [(int) C_RID_CODE (after_at)];
3728 _cpp_backup_tokens (parse_in, 1);
3733 /* These tokens are C++ specific (and will not be generated
3734 in C mode, but let's be cautious). */
3736 case CPP_DEREF_STAR:
3742 /* These tokens should not survive translation phase 4. */
3745 error ("syntax error at '%s' token", NAME(last_token));
3758 timevar_push (TV_LEX);
3760 timevar_pop (TV_LEX);
3764 /* Sets the value of the 'yydebug' variable to VALUE.
3765 This is a function so we don't have to have YYDEBUG defined
3766 in order to build the compiler. */
3769 c_set_yydebug (value)
3775 warning ("YYDEBUG not defined");
3779 /* Function used when yydebug is set, to print a token in more detail. */
3782 yyprint (file, yychar, yyl)
3789 fprintf (file, " [%s]", NAME(last_token));
3799 if (IDENTIFIER_POINTER (t))
3800 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3804 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3805 if (TREE_CODE (t) == INTEGER_CST)
3807 #if HOST_BITS_PER_WIDE_INT == 64
3808 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3811 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3818 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3824 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3829 /* This is not the ideal place to put these, but we have to get them out
3830 of c-lex.c because cp/lex.c has its own versions. */
3832 /* Return something to represent absolute declarators containing a *.
3833 TARGET is the absolute declarator that the * contains.
3834 TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
3835 to apply to the pointer type, represented as identifiers, possible mixed
3838 We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
3839 if attributes are present) and whose type is the modifier list. */
3842 make_pointer_declarator (type_quals_attrs, target)
3843 tree type_quals_attrs, target;
3846 tree itarget = target;
3847 split_specs_attrs (type_quals_attrs, &quals, &attrs);
3848 if (attrs != NULL_TREE)
3849 itarget = tree_cons (attrs, target, NULL_TREE);
3850 return build1 (INDIRECT_REF, quals, itarget);