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 /* A STRING_CST with type an array of the appropriate character type. */
103 %token STRING OBJC_STRING
105 /* "...", used for functions with variable arglists. */
108 /* the reserved words */
109 /* SCO include files test "ASM", so use something else. */
110 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
111 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
112 %token ATTRIBUTE EXTENSION LABEL
113 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
114 %token PTR_VALUE PTR_BASE PTR_EXTENT
116 /* function name can be a string const or a var decl. */
117 %token STRING_FUNC_NAME VAR_FUNC_NAME
119 /* Add precedence rules to solve dangling else s/r conflict */
123 /* Define the operator tokens and their precedences.
124 The value is an integer because, if used, it is the tree code
125 to use in the expression made from the operator. */
127 %right <code> ASSIGN '='
128 %right <code> '?' ':'
134 %left <code> EQCOMPARE
135 %left <code> ARITHCOMPARE
136 %left <code> LSHIFT RSHIFT
138 %left <code> '*' '/' '%'
139 %right <code> UNARY PLUSPLUS MINUSMINUS
141 %left <code> POINTSAT '.' '(' '['
143 /* The Objective-C keywords. These are included in C and in
144 Objective C, so that the token codes are the same in both. */
145 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
146 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
149 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
150 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
152 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
153 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
154 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
155 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
156 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
157 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
158 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
159 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
160 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
161 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
162 %type <ttype> declspecs_ts declspecs_nots
163 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
164 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
165 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
166 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
167 %type <ttype> typespec_nonreserved_nonattr
169 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL maybe_type_qual
170 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
171 %type <ttype> init maybeasm
172 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
173 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
174 %type <ttype> any_word extension
176 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
177 %type <ttype> do_stmt_start poplevel stmt label
179 %type <ttype> c99_block_start c99_block_end
180 %type <ttype> declarator
181 %type <ttype> notype_declarator after_type_declarator
182 %type <ttype> parm_declarator
183 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
184 %type <ttype> array_declarator
186 %type <ttype> structsp_attr structsp_nonattr
187 %type <ttype> component_decl_list component_decl_list2
188 %type <ttype> component_decl components components_notype component_declarator
189 %type <ttype> component_notype_declarator
190 %type <ttype> enumlist enumerator
191 %type <ttype> struct_head union_head enum_head
192 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
193 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
194 %type <ttype> xexpr parms parm firstparm identifiers
196 %type <ttype> parmlist parmlist_1 parmlist_2
197 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
198 %type <ttype> identifiers_or_typenames
200 %type <itype> setspecs setspecs_fp
202 %type <filename> save_filename
203 %type <lineno> save_lineno
208 /* the Objective-C nonterminals */
210 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
211 %type <ttype> methoddecl unaryselector keywordselector selector
212 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
213 %type <ttype> keywordexpr keywordarglist keywordarg
214 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
215 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
216 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
218 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
222 /* Number of statements (loosely speaking) and compound statements
224 static int stmt_count;
225 static int compstmt_count;
227 /* Input file and line number of the end of the body of last simple_if;
228 used by the stmt-rule immediately after simple_if returns. */
229 static const char *if_stmt_file;
230 static int if_stmt_line;
232 /* List of types and structure classes of the current declaration. */
233 static tree current_declspecs = NULL_TREE;
234 static tree prefix_attributes = NULL_TREE;
236 /* List of all the attributes applying to the identifier currently being
237 declared; includes prefix_attributes and possibly some more attributes
238 just after a comma. */
239 static tree all_prefix_attributes = NULL_TREE;
241 /* Stack of saved values of current_declspecs, prefix_attributes and
242 all_prefix_attributes. */
243 static tree declspec_stack;
245 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
246 should be called from the productions making use of setspecs. */
247 #define PUSH_DECLSPEC_STACK \
249 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
250 all_prefix_attributes), \
255 #define POP_DECLSPEC_STACK \
257 current_declspecs = TREE_VALUE (declspec_stack); \
258 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
259 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
260 declspec_stack = TREE_CHAIN (declspec_stack); \
263 /* For __extension__, save/restore the warning flags which are
264 controlled by __extension__. */
265 #define SAVE_WARN_FLAGS() \
266 size_int (pedantic | (warn_pointer_arith << 1))
267 #define RESTORE_WARN_FLAGS(tval) \
269 int val = tree_low_cst (tval, 0); \
270 pedantic = val & 1; \
271 warn_pointer_arith = (val >> 1) & 1; \
275 /* Objective-C specific parser/lexer information */
277 static enum tree_code objc_inherit_code;
278 static int objc_pq_context = 0, objc_public_flag = 0;
280 /* The following flag is needed to contextualize ObjC lexical analysis.
281 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
282 an identifier to an ObjC class, even if a class with that name
284 static int objc_need_raw_identifier;
285 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
289 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
292 /* Tell yyparse how to print a token's value, if yydebug is set. */
294 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
296 static void yyprint PARAMS ((FILE *, int, YYSTYPE));
297 static void yyerror PARAMS ((const char *));
298 static int yylexname PARAMS ((void));
299 static inline int _yylex PARAMS ((void));
300 static int yylex PARAMS ((void));
301 static void init_reswords PARAMS ((void));
303 /* Add GC roots for variables local to this file. */
309 ggc_add_tree_root (&declspec_stack, 1);
310 ggc_add_tree_root (¤t_declspecs, 1);
311 ggc_add_tree_root (&prefix_attributes, 1);
312 ggc_add_tree_root (&all_prefix_attributes, 1);
320 pedwarn ("ISO C forbids an empty source file");
325 /* In case there were missing closebraces,
326 get us back to the global binding level. */
327 while (! global_bindings_p ())
330 finish_fname_decls ();
336 /* the reason for the strange actions in this rule
337 is so that notype_initdecls when reached via datadef
338 can find a valid list of type and sc specs in $0. */
341 {$<ttype>$ = NULL_TREE; } extdef
342 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
351 | ASM_KEYWORD '(' STRING ')' ';'
352 { assemble_asm ($3); }
354 { RESTORE_WARN_FLAGS ($1); }
358 setspecs notype_initdecls ';'
360 error ("ISO C forbids data definition with no type or storage class");
361 else if (!flag_traditional)
362 warning ("data definition has no type or storage class");
364 POP_DECLSPEC_STACK; }
365 | declspecs_nots setspecs notype_initdecls ';'
366 { POP_DECLSPEC_STACK; }
367 | declspecs_ts setspecs initdecls ';'
368 { POP_DECLSPEC_STACK; }
375 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
379 declspecs_ts setspecs declarator
380 { if (! start_function (current_declspecs, $3,
381 all_prefix_attributes))
385 { store_parm_decls (); }
386 save_filename save_lineno compstmt_or_error
387 { DECL_SOURCE_FILE (current_function_decl) = $7;
388 DECL_SOURCE_LINE (current_function_decl) = $8;
390 POP_DECLSPEC_STACK; }
391 | declspecs_ts setspecs declarator error
392 { POP_DECLSPEC_STACK; }
393 | declspecs_nots setspecs notype_declarator
394 { if (! start_function (current_declspecs, $3,
395 all_prefix_attributes))
399 { store_parm_decls (); }
400 save_filename save_lineno compstmt_or_error
401 { DECL_SOURCE_FILE (current_function_decl) = $7;
402 DECL_SOURCE_LINE (current_function_decl) = $8;
404 POP_DECLSPEC_STACK; }
405 | declspecs_nots setspecs notype_declarator error
406 { POP_DECLSPEC_STACK; }
407 | setspecs notype_declarator
408 { if (! start_function (NULL_TREE, $2,
409 all_prefix_attributes))
413 { store_parm_decls (); }
414 save_filename save_lineno compstmt_or_error
415 { DECL_SOURCE_FILE (current_function_decl) = $6;
416 DECL_SOURCE_LINE (current_function_decl) = $7;
418 POP_DECLSPEC_STACK; }
419 | setspecs notype_declarator error
420 { POP_DECLSPEC_STACK; }
435 { $$ = NEGATE_EXPR; }
439 if (warn_traditional && !in_system_header)
440 warning ("traditional C rejects the unary plus operator");
444 { $$ = PREINCREMENT_EXPR; }
446 { $$ = PREDECREMENT_EXPR; }
448 { $$ = BIT_NOT_EXPR; }
450 { $$ = TRUTH_NOT_EXPR; }
453 expr: nonnull_exprlist
454 { $$ = build_compound_expr ($1); }
465 { $$ = build_tree_list (NULL_TREE, $1); }
466 | nonnull_exprlist ',' expr_no_commas
467 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
472 | '*' cast_expr %prec UNARY
473 { $$ = build_indirect_ref ($2, "unary *"); }
474 /* __extension__ turns off -pedantic for following primary. */
475 | extension cast_expr %prec UNARY
477 RESTORE_WARN_FLAGS ($1); }
478 | unop cast_expr %prec UNARY
479 { $$ = build_unary_op ($1, $2, 0);
480 overflow_warning ($$); }
481 /* Refer to the address of a label as a pointer. */
483 { $$ = finish_label_address_expr ($2); }
484 /* This seems to be impossible on some machines, so let's turn it off.
485 You can use __builtin_next_arg to find the anonymous stack args.
487 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
488 $$ = error_mark_node;
489 if (TREE_VALUE (tree_last (types)) == void_type_node)
490 error ("`&...' used in function with fixed number of arguments");
494 pedwarn ("ISO C forbids `&...'");
495 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
496 $$ = build_unary_op (ADDR_EXPR, $$, 0);
499 | sizeof unary_expr %prec UNARY
501 if (TREE_CODE ($2) == COMPONENT_REF
502 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
503 error ("`sizeof' applied to a bit-field");
504 $$ = c_sizeof (TREE_TYPE ($2)); }
505 | sizeof '(' typename ')' %prec HYPERUNARY
507 $$ = c_sizeof (groktypename ($3)); }
508 | alignof unary_expr %prec UNARY
510 $$ = c_alignof_expr ($2); }
511 | alignof '(' typename ')' %prec HYPERUNARY
513 $$ = c_alignof (groktypename ($3)); }
514 | REALPART cast_expr %prec UNARY
515 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
516 | IMAGPART cast_expr %prec UNARY
517 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
521 SIZEOF { skip_evaluation++; }
525 ALIGNOF { skip_evaluation++; }
530 | '(' typename ')' cast_expr %prec UNARY
531 { $$ = c_cast_expr ($2, $4); }
536 | expr_no_commas '+' expr_no_commas
537 { $$ = parser_build_binary_op ($2, $1, $3); }
538 | expr_no_commas '-' expr_no_commas
539 { $$ = parser_build_binary_op ($2, $1, $3); }
540 | expr_no_commas '*' expr_no_commas
541 { $$ = parser_build_binary_op ($2, $1, $3); }
542 | expr_no_commas '/' expr_no_commas
543 { $$ = parser_build_binary_op ($2, $1, $3); }
544 | expr_no_commas '%' expr_no_commas
545 { $$ = parser_build_binary_op ($2, $1, $3); }
546 | expr_no_commas LSHIFT expr_no_commas
547 { $$ = parser_build_binary_op ($2, $1, $3); }
548 | expr_no_commas RSHIFT expr_no_commas
549 { $$ = parser_build_binary_op ($2, $1, $3); }
550 | expr_no_commas ARITHCOMPARE expr_no_commas
551 { $$ = parser_build_binary_op ($2, $1, $3); }
552 | expr_no_commas EQCOMPARE expr_no_commas
553 { $$ = parser_build_binary_op ($2, $1, $3); }
554 | expr_no_commas '&' expr_no_commas
555 { $$ = parser_build_binary_op ($2, $1, $3); }
556 | expr_no_commas '|' expr_no_commas
557 { $$ = parser_build_binary_op ($2, $1, $3); }
558 | expr_no_commas '^' expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas ANDAND
561 { $1 = truthvalue_conversion (default_conversion ($1));
562 skip_evaluation += $1 == boolean_false_node; }
564 { skip_evaluation -= $1 == boolean_false_node;
565 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
566 | expr_no_commas OROR
567 { $1 = truthvalue_conversion (default_conversion ($1));
568 skip_evaluation += $1 == boolean_true_node; }
570 { skip_evaluation -= $1 == boolean_true_node;
571 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
573 { $1 = truthvalue_conversion (default_conversion ($1));
574 skip_evaluation += $1 == boolean_false_node; }
576 { skip_evaluation += (($1 == boolean_true_node)
577 - ($1 == boolean_false_node)); }
579 { skip_evaluation -= $1 == boolean_true_node;
580 $$ = build_conditional_expr ($1, $4, $7); }
583 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
584 /* Make sure first operand is calculated only once. */
585 $<ttype>2 = save_expr ($1);
586 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
587 skip_evaluation += $1 == boolean_true_node; }
589 { skip_evaluation -= $1 == boolean_true_node;
590 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
591 | expr_no_commas '=' expr_no_commas
593 $$ = build_modify_expr ($1, NOP_EXPR, $3);
594 class = TREE_CODE_CLASS (TREE_CODE ($$));
595 if (IS_EXPR_CODE_CLASS (class))
596 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
598 | expr_no_commas ASSIGN expr_no_commas
600 $$ = build_modify_expr ($1, $2, $3);
601 /* This inhibits warnings in truthvalue_conversion. */
602 class = TREE_CODE_CLASS (TREE_CODE ($$));
603 if (IS_EXPR_CODE_CLASS (class))
604 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
611 if (yychar == YYEMPTY)
613 $$ = build_external_ref ($1, yychar == '(');
619 { $$ = fname_decl (C_RID_CODE ($$), $$); }
620 | '(' typename ')' '{'
621 { start_init (NULL_TREE, NULL, 0);
622 $2 = groktypename ($2);
623 really_start_incremental_init ($2); }
624 initlist_maybe_comma '}' %prec UNARY
625 { tree constructor = pop_init_level (0);
629 if (pedantic && ! flag_isoc99)
630 pedwarn ("ISO C89 forbids compound literals");
631 $$ = build_compound_literal (type, constructor);
634 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
635 if (IS_EXPR_CODE_CLASS (class))
636 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
639 { $$ = error_mark_node; }
640 | compstmt_primary_start compstmt_nostart ')'
641 { tree saved_last_tree;
644 pedwarn ("ISO C forbids braced-groups within expressions");
647 saved_last_tree = COMPOUND_BODY ($1);
648 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
649 last_tree = saved_last_tree;
650 TREE_CHAIN (last_tree) = NULL_TREE;
652 last_expr_type = void_type_node;
653 $$ = build1 (STMT_EXPR, last_expr_type, $1);
654 TREE_SIDE_EFFECTS ($$) = 1;
656 | compstmt_primary_start error ')'
659 last_tree = COMPOUND_BODY ($1);
660 TREE_CHAIN (last_tree) = NULL_TREE;
661 $$ = error_mark_node;
663 | primary '(' exprlist ')' %prec '.'
664 { $$ = build_function_call ($1, $3); }
665 | VA_ARG '(' expr_no_commas ',' typename ')'
666 { $$ = build_va_arg ($3, groktypename ($5)); }
667 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
673 if (TREE_CODE (c) != INTEGER_CST)
674 error ("first argument to __builtin_choose_expr not a constant");
675 $$ = integer_zerop (c) ? $7 : $5;
677 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
681 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
682 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
684 $$ = comptypes (e1, e2)
685 ? build_int_2 (1, 0) : build_int_2 (0, 0);
687 | primary '[' expr ']' %prec '.'
688 { $$ = build_array_ref ($1, $3); }
689 | primary '.' identifier
692 if (!is_public ($1, $3))
693 $$ = error_mark_node;
696 $$ = build_component_ref ($1, $3);
698 | primary POINTSAT identifier
700 tree expr = build_indirect_ref ($1, "->");
703 if (!is_public (expr, $3))
704 $$ = error_mark_node;
707 $$ = build_component_ref (expr, $3);
710 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
712 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
715 { $$ = build_message_expr ($1); }
717 { $$ = build_selector_expr ($1); }
719 { $$ = build_protocol_expr ($1); }
721 { $$ = build_encode_expr ($1); }
723 { $$ = build_objc_string_object ($1); }
728 /* Chains ObjC string objects together. */
732 | objc_string OBJC_STRING
733 { $$ = chainon ($1, $2); }
737 old_style_parm_decls:
741 /* ... is used here to indicate a varargs function. */
744 pedwarn ("ISO C does not permit use of `varargs.h'"); }
747 /* The following are analogous to lineno_decl, decls and decl
748 except that they do not allow nested functions.
749 They are used for old-style parm decls. */
751 save_filename save_lineno datadecl
758 | datadecls lineno_datadecl
759 | lineno_datadecl errstmt
762 /* We don't allow prefix attributes here because they cause reduce/reduce
763 conflicts: we can't know whether we're parsing a function decl with
764 attribute suffix, or function defn with attribute prefix on first old
767 declspecs_ts_nosa setspecs initdecls ';'
768 { POP_DECLSPEC_STACK; }
769 | declspecs_nots_nosa setspecs notype_initdecls ';'
770 { POP_DECLSPEC_STACK; }
771 | declspecs_ts_nosa ';'
772 { shadow_tag_warned ($1, 1);
773 pedwarn ("empty declaration"); }
774 | declspecs_nots_nosa ';'
775 { pedwarn ("empty declaration"); }
778 /* This combination which saves a lineno before a decl
779 is the normal thing to use, rather than decl itself.
780 This is to avoid shift/reduce conflicts in contexts
781 where statement labels are allowed. */
783 save_filename save_lineno decl
787 /* records the type and storage class specs to use for processing
788 the declarators that follow.
789 Maintains a stack of outer-level values of current_declspecs,
790 for the sake of parm declarations nested in function declarators. */
791 setspecs: /* empty */
792 { pending_xref_error ();
794 split_specs_attrs ($<ttype>0,
795 ¤t_declspecs, &prefix_attributes);
796 all_prefix_attributes = prefix_attributes; }
799 /* Possibly attributes after a comma, which should reset all_prefix_attributes
800 to prefix_attributes with these ones chained on the front. */
803 { all_prefix_attributes = chainon ($1, prefix_attributes); }
807 declspecs_ts setspecs initdecls ';'
808 { POP_DECLSPEC_STACK; }
809 | declspecs_nots setspecs notype_initdecls ';'
810 { POP_DECLSPEC_STACK; }
811 | declspecs_ts setspecs nested_function
812 { POP_DECLSPEC_STACK; }
813 | declspecs_nots setspecs notype_nested_function
814 { POP_DECLSPEC_STACK; }
818 { RESTORE_WARN_FLAGS ($1); }
821 /* A list of declaration specifiers. These are:
823 - Storage class specifiers (SCSPEC), which for GCC currently include
824 function specifiers ("inline").
826 - Type specifiers (typespec_*).
828 - Type qualifiers (TYPE_QUAL).
830 - Attribute specifier lists (attributes).
832 These are stored as a TREE_LIST; the head of the list is the last
833 item in the specifier list. Each entry in the list has either a
834 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
835 is a single other specifier or qualifier; and a TREE_CHAIN that is the
836 rest of the list. TREE_STATIC is set on the list if something other
837 than a storage class specifier or attribute has been seen; this is used
838 to warn for the obsolescent usage of storage class specifiers other than
839 at the start of the list. (Doing this properly would require function
840 specifiers to be handled separately from storage class specifiers.)
842 The various cases below are classified according to:
844 (a) Whether a storage class specifier is included or not; some
845 places in the grammar disallow storage class specifiers (_sc or _nosc).
847 (b) Whether a type specifier has been seen; after a type specifier,
848 a typedef name is an identifier to redeclare (_ts or _nots).
850 (c) Whether the list starts with an attribute; in certain places,
851 the grammar requires specifiers that don't start with an attribute
854 (d) Whether the list ends with an attribute (or a specifier such that
855 any following attribute would have been parsed as part of that specifier);
856 this avoids shift-reduce conflicts in the parsing of attributes
861 (i) Distinguish between function specifiers and storage class specifiers,
862 at least for the purpose of warnings about obsolescent usage.
864 (ii) Halve the number of productions here by eliminating the _sc/_nosc
865 distinction and instead checking where required that storage class
866 specifiers aren't present. */
868 /* Declspecs which contain at least one type specifier or typedef name.
869 (Just `const' or `volatile' is not enough.)
870 A typedef'd name following these is taken as a name to be declared.
871 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
873 declspecs_nosc_nots_nosa_noea:
875 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
876 TREE_STATIC ($$) = 1; }
877 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
878 { $$ = tree_cons (NULL_TREE, $2, $1);
879 TREE_STATIC ($$) = 1; }
880 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
881 { $$ = tree_cons (NULL_TREE, $2, $1);
882 TREE_STATIC ($$) = 1; }
885 declspecs_nosc_nots_nosa_ea:
886 declspecs_nosc_nots_nosa_noea attributes
887 { $$ = tree_cons ($2, NULL_TREE, $1);
888 TREE_STATIC ($$) = TREE_STATIC ($1); }
891 declspecs_nosc_nots_sa_noea:
892 declspecs_nosc_nots_sa_noea TYPE_QUAL
893 { $$ = tree_cons (NULL_TREE, $2, $1);
894 TREE_STATIC ($$) = 1; }
895 | declspecs_nosc_nots_sa_ea TYPE_QUAL
896 { $$ = tree_cons (NULL_TREE, $2, $1);
897 TREE_STATIC ($$) = 1; }
900 declspecs_nosc_nots_sa_ea:
902 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
903 TREE_STATIC ($$) = 0; }
904 | declspecs_nosc_nots_sa_noea attributes
905 { $$ = tree_cons ($2, NULL_TREE, $1);
906 TREE_STATIC ($$) = TREE_STATIC ($1); }
909 declspecs_nosc_ts_nosa_noea:
911 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
912 TREE_STATIC ($$) = 1; }
913 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
916 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
917 { $$ = tree_cons (NULL_TREE, $2, $1);
918 TREE_STATIC ($$) = 1; }
919 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
920 { $$ = tree_cons (NULL_TREE, $2, $1);
921 TREE_STATIC ($$) = 1; }
922 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
923 { $$ = tree_cons (NULL_TREE, $2, $1);
924 TREE_STATIC ($$) = 1; }
925 | declspecs_nosc_nots_nosa_noea typespec_nonattr
926 { $$ = tree_cons (NULL_TREE, $2, $1);
927 TREE_STATIC ($$) = 1; }
928 | declspecs_nosc_nots_nosa_ea typespec_nonattr
929 { $$ = tree_cons (NULL_TREE, $2, $1);
930 TREE_STATIC ($$) = 1; }
933 declspecs_nosc_ts_nosa_ea:
935 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
936 TREE_STATIC ($$) = 1; }
937 | declspecs_nosc_ts_nosa_noea attributes
938 { $$ = tree_cons ($2, NULL_TREE, $1);
939 TREE_STATIC ($$) = TREE_STATIC ($1); }
940 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
941 { $$ = tree_cons (NULL_TREE, $2, $1);
942 TREE_STATIC ($$) = 1; }
943 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
944 { $$ = tree_cons (NULL_TREE, $2, $1);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_nots_nosa_noea typespec_attr
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
949 | declspecs_nosc_nots_nosa_ea typespec_attr
950 { $$ = tree_cons (NULL_TREE, $2, $1);
951 TREE_STATIC ($$) = 1; }
954 declspecs_nosc_ts_sa_noea:
955 declspecs_nosc_ts_sa_noea TYPE_QUAL
956 { $$ = tree_cons (NULL_TREE, $2, $1);
957 TREE_STATIC ($$) = 1; }
958 | declspecs_nosc_ts_sa_ea TYPE_QUAL
959 { $$ = tree_cons (NULL_TREE, $2, $1);
960 TREE_STATIC ($$) = 1; }
961 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
964 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
965 { $$ = tree_cons (NULL_TREE, $2, $1);
966 TREE_STATIC ($$) = 1; }
967 | declspecs_nosc_nots_sa_noea typespec_nonattr
968 { $$ = tree_cons (NULL_TREE, $2, $1);
969 TREE_STATIC ($$) = 1; }
970 | declspecs_nosc_nots_sa_ea typespec_nonattr
971 { $$ = tree_cons (NULL_TREE, $2, $1);
972 TREE_STATIC ($$) = 1; }
975 declspecs_nosc_ts_sa_ea:
976 declspecs_nosc_ts_sa_noea attributes
977 { $$ = tree_cons ($2, NULL_TREE, $1);
978 TREE_STATIC ($$) = TREE_STATIC ($1); }
979 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
985 | declspecs_nosc_nots_sa_noea typespec_attr
986 { $$ = tree_cons (NULL_TREE, $2, $1);
987 TREE_STATIC ($$) = 1; }
988 | declspecs_nosc_nots_sa_ea typespec_attr
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
993 declspecs_sc_nots_nosa_noea:
995 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
996 TREE_STATIC ($$) = 0; }
997 | declspecs_sc_nots_nosa_noea TYPE_QUAL
998 { $$ = tree_cons (NULL_TREE, $2, $1);
999 TREE_STATIC ($$) = 1; }
1000 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_nots_nosa_noea SCSPEC
1004 { if (extra_warnings && TREE_STATIC ($1))
1005 warning ("`%s' is not at beginning of declaration",
1006 IDENTIFIER_POINTER ($2));
1007 $$ = tree_cons (NULL_TREE, $2, $1);
1008 TREE_STATIC ($$) = TREE_STATIC ($1); }
1009 | declspecs_nosc_nots_nosa_ea SCSPEC
1010 { if (extra_warnings && TREE_STATIC ($1))
1011 warning ("`%s' is not at beginning of declaration",
1012 IDENTIFIER_POINTER ($2));
1013 $$ = tree_cons (NULL_TREE, $2, $1);
1014 TREE_STATIC ($$) = TREE_STATIC ($1); }
1015 | declspecs_sc_nots_nosa_noea SCSPEC
1016 { if (extra_warnings && TREE_STATIC ($1))
1017 warning ("`%s' is not at beginning of declaration",
1018 IDENTIFIER_POINTER ($2));
1019 $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = TREE_STATIC ($1); }
1021 | declspecs_sc_nots_nosa_ea SCSPEC
1022 { if (extra_warnings && TREE_STATIC ($1))
1023 warning ("`%s' is not at beginning of declaration",
1024 IDENTIFIER_POINTER ($2));
1025 $$ = tree_cons (NULL_TREE, $2, $1);
1026 TREE_STATIC ($$) = TREE_STATIC ($1); }
1029 declspecs_sc_nots_nosa_ea:
1030 declspecs_sc_nots_nosa_noea attributes
1031 { $$ = tree_cons ($2, NULL_TREE, $1);
1032 TREE_STATIC ($$) = TREE_STATIC ($1); }
1035 declspecs_sc_nots_sa_noea:
1036 declspecs_sc_nots_sa_noea TYPE_QUAL
1037 { $$ = tree_cons (NULL_TREE, $2, $1);
1038 TREE_STATIC ($$) = 1; }
1039 | declspecs_sc_nots_sa_ea TYPE_QUAL
1040 { $$ = tree_cons (NULL_TREE, $2, $1);
1041 TREE_STATIC ($$) = 1; }
1042 | declspecs_nosc_nots_sa_noea SCSPEC
1043 { if (extra_warnings && TREE_STATIC ($1))
1044 warning ("`%s' is not at beginning of declaration",
1045 IDENTIFIER_POINTER ($2));
1046 $$ = tree_cons (NULL_TREE, $2, $1);
1047 TREE_STATIC ($$) = TREE_STATIC ($1); }
1048 | declspecs_nosc_nots_sa_ea SCSPEC
1049 { if (extra_warnings && TREE_STATIC ($1))
1050 warning ("`%s' is not at beginning of declaration",
1051 IDENTIFIER_POINTER ($2));
1052 $$ = tree_cons (NULL_TREE, $2, $1);
1053 TREE_STATIC ($$) = TREE_STATIC ($1); }
1054 | declspecs_sc_nots_sa_noea SCSPEC
1055 { if (extra_warnings && TREE_STATIC ($1))
1056 warning ("`%s' is not at beginning of declaration",
1057 IDENTIFIER_POINTER ($2));
1058 $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = TREE_STATIC ($1); }
1060 | declspecs_sc_nots_sa_ea SCSPEC
1061 { if (extra_warnings && TREE_STATIC ($1))
1062 warning ("`%s' is not at beginning of declaration",
1063 IDENTIFIER_POINTER ($2));
1064 $$ = tree_cons (NULL_TREE, $2, $1);
1065 TREE_STATIC ($$) = TREE_STATIC ($1); }
1068 declspecs_sc_nots_sa_ea:
1069 declspecs_sc_nots_sa_noea attributes
1070 { $$ = tree_cons ($2, NULL_TREE, $1);
1071 TREE_STATIC ($$) = TREE_STATIC ($1); }
1074 declspecs_sc_ts_nosa_noea:
1075 declspecs_sc_ts_nosa_noea TYPE_QUAL
1076 { $$ = tree_cons (NULL_TREE, $2, $1);
1077 TREE_STATIC ($$) = 1; }
1078 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1079 { $$ = tree_cons (NULL_TREE, $2, $1);
1080 TREE_STATIC ($$) = 1; }
1081 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1082 { $$ = tree_cons (NULL_TREE, $2, $1);
1083 TREE_STATIC ($$) = 1; }
1084 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1085 { $$ = tree_cons (NULL_TREE, $2, $1);
1086 TREE_STATIC ($$) = 1; }
1087 | declspecs_sc_nots_nosa_noea typespec_nonattr
1088 { $$ = tree_cons (NULL_TREE, $2, $1);
1089 TREE_STATIC ($$) = 1; }
1090 | declspecs_sc_nots_nosa_ea typespec_nonattr
1091 { $$ = tree_cons (NULL_TREE, $2, $1);
1092 TREE_STATIC ($$) = 1; }
1093 | declspecs_nosc_ts_nosa_noea SCSPEC
1094 { if (extra_warnings && TREE_STATIC ($1))
1095 warning ("`%s' is not at beginning of declaration",
1096 IDENTIFIER_POINTER ($2));
1097 $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = TREE_STATIC ($1); }
1099 | declspecs_nosc_ts_nosa_ea SCSPEC
1100 { if (extra_warnings && TREE_STATIC ($1))
1101 warning ("`%s' is not at beginning of declaration",
1102 IDENTIFIER_POINTER ($2));
1103 $$ = tree_cons (NULL_TREE, $2, $1);
1104 TREE_STATIC ($$) = TREE_STATIC ($1); }
1105 | declspecs_sc_ts_nosa_noea SCSPEC
1106 { if (extra_warnings && TREE_STATIC ($1))
1107 warning ("`%s' is not at beginning of declaration",
1108 IDENTIFIER_POINTER ($2));
1109 $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = TREE_STATIC ($1); }
1111 | declspecs_sc_ts_nosa_ea SCSPEC
1112 { if (extra_warnings && TREE_STATIC ($1))
1113 warning ("`%s' is not at beginning of declaration",
1114 IDENTIFIER_POINTER ($2));
1115 $$ = tree_cons (NULL_TREE, $2, $1);
1116 TREE_STATIC ($$) = TREE_STATIC ($1); }
1119 declspecs_sc_ts_nosa_ea:
1120 declspecs_sc_ts_nosa_noea attributes
1121 { $$ = tree_cons ($2, NULL_TREE, $1);
1122 TREE_STATIC ($$) = TREE_STATIC ($1); }
1123 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1124 { $$ = tree_cons (NULL_TREE, $2, $1);
1125 TREE_STATIC ($$) = 1; }
1126 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1127 { $$ = tree_cons (NULL_TREE, $2, $1);
1128 TREE_STATIC ($$) = 1; }
1129 | declspecs_sc_nots_nosa_noea typespec_attr
1130 { $$ = tree_cons (NULL_TREE, $2, $1);
1131 TREE_STATIC ($$) = 1; }
1132 | declspecs_sc_nots_nosa_ea typespec_attr
1133 { $$ = tree_cons (NULL_TREE, $2, $1);
1134 TREE_STATIC ($$) = 1; }
1137 declspecs_sc_ts_sa_noea:
1138 declspecs_sc_ts_sa_noea TYPE_QUAL
1139 { $$ = tree_cons (NULL_TREE, $2, $1);
1140 TREE_STATIC ($$) = 1; }
1141 | declspecs_sc_ts_sa_ea TYPE_QUAL
1142 { $$ = tree_cons (NULL_TREE, $2, $1);
1143 TREE_STATIC ($$) = 1; }
1144 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1145 { $$ = tree_cons (NULL_TREE, $2, $1);
1146 TREE_STATIC ($$) = 1; }
1147 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1148 { $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = 1; }
1150 | declspecs_sc_nots_sa_noea typespec_nonattr
1151 { $$ = tree_cons (NULL_TREE, $2, $1);
1152 TREE_STATIC ($$) = 1; }
1153 | declspecs_sc_nots_sa_ea typespec_nonattr
1154 { $$ = tree_cons (NULL_TREE, $2, $1);
1155 TREE_STATIC ($$) = 1; }
1156 | declspecs_nosc_ts_sa_noea SCSPEC
1157 { if (extra_warnings && TREE_STATIC ($1))
1158 warning ("`%s' is not at beginning of declaration",
1159 IDENTIFIER_POINTER ($2));
1160 $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = TREE_STATIC ($1); }
1162 | declspecs_nosc_ts_sa_ea SCSPEC
1163 { if (extra_warnings && TREE_STATIC ($1))
1164 warning ("`%s' is not at beginning of declaration",
1165 IDENTIFIER_POINTER ($2));
1166 $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = TREE_STATIC ($1); }
1168 | declspecs_sc_ts_sa_noea SCSPEC
1169 { if (extra_warnings && TREE_STATIC ($1))
1170 warning ("`%s' is not at beginning of declaration",
1171 IDENTIFIER_POINTER ($2));
1172 $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = TREE_STATIC ($1); }
1174 | declspecs_sc_ts_sa_ea SCSPEC
1175 { if (extra_warnings && TREE_STATIC ($1))
1176 warning ("`%s' is not at beginning of declaration",
1177 IDENTIFIER_POINTER ($2));
1178 $$ = tree_cons (NULL_TREE, $2, $1);
1179 TREE_STATIC ($$) = TREE_STATIC ($1); }
1182 declspecs_sc_ts_sa_ea:
1183 declspecs_sc_ts_sa_noea attributes
1184 { $$ = tree_cons ($2, NULL_TREE, $1);
1185 TREE_STATIC ($$) = TREE_STATIC ($1); }
1186 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1187 { $$ = tree_cons (NULL_TREE, $2, $1);
1188 TREE_STATIC ($$) = 1; }
1189 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1190 { $$ = tree_cons (NULL_TREE, $2, $1);
1191 TREE_STATIC ($$) = 1; }
1192 | declspecs_sc_nots_sa_noea typespec_attr
1193 { $$ = tree_cons (NULL_TREE, $2, $1);
1194 TREE_STATIC ($$) = 1; }
1195 | declspecs_sc_nots_sa_ea typespec_attr
1196 { $$ = tree_cons (NULL_TREE, $2, $1);
1197 TREE_STATIC ($$) = 1; }
1200 /* Particular useful classes of declspecs. */
1202 declspecs_nosc_ts_nosa_noea
1203 | declspecs_nosc_ts_nosa_ea
1204 | declspecs_nosc_ts_sa_noea
1205 | declspecs_nosc_ts_sa_ea
1206 | declspecs_sc_ts_nosa_noea
1207 | declspecs_sc_ts_nosa_ea
1208 | declspecs_sc_ts_sa_noea
1209 | declspecs_sc_ts_sa_ea
1213 declspecs_nosc_nots_nosa_noea
1214 | declspecs_nosc_nots_nosa_ea
1215 | declspecs_nosc_nots_sa_noea
1216 | declspecs_nosc_nots_sa_ea
1217 | declspecs_sc_nots_nosa_noea
1218 | declspecs_sc_nots_nosa_ea
1219 | declspecs_sc_nots_sa_noea
1220 | declspecs_sc_nots_sa_ea
1224 declspecs_nosc_ts_nosa_noea
1225 | declspecs_nosc_ts_nosa_ea
1226 | declspecs_sc_ts_nosa_noea
1227 | declspecs_sc_ts_nosa_ea
1230 declspecs_nots_nosa:
1231 declspecs_nosc_nots_nosa_noea
1232 | declspecs_nosc_nots_nosa_ea
1233 | declspecs_sc_nots_nosa_noea
1234 | declspecs_sc_nots_nosa_ea
1238 declspecs_nosc_ts_nosa_noea
1239 | declspecs_nosc_ts_nosa_ea
1240 | declspecs_nosc_ts_sa_noea
1241 | declspecs_nosc_ts_sa_ea
1244 declspecs_nosc_nots:
1245 declspecs_nosc_nots_nosa_noea
1246 | declspecs_nosc_nots_nosa_ea
1247 | declspecs_nosc_nots_sa_noea
1248 | declspecs_nosc_nots_sa_ea
1252 declspecs_nosc_ts_nosa_noea
1253 | declspecs_nosc_ts_nosa_ea
1254 | declspecs_nosc_ts_sa_noea
1255 | declspecs_nosc_ts_sa_ea
1256 | declspecs_nosc_nots_nosa_noea
1257 | declspecs_nosc_nots_nosa_ea
1258 | declspecs_nosc_nots_sa_noea
1259 | declspecs_nosc_nots_sa_ea
1263 declspecs_nosc_nots_nosa_noea
1264 | declspecs_nosc_nots_nosa_ea
1265 | declspecs_nosc_nots_sa_noea
1266 | declspecs_nosc_nots_sa_ea
1267 | declspecs_nosc_ts_nosa_noea
1268 | declspecs_nosc_ts_nosa_ea
1269 | declspecs_nosc_ts_sa_noea
1270 | declspecs_nosc_ts_sa_ea
1271 | declspecs_sc_nots_nosa_noea
1272 | declspecs_sc_nots_nosa_ea
1273 | declspecs_sc_nots_sa_noea
1274 | declspecs_sc_nots_sa_ea
1275 | declspecs_sc_ts_nosa_noea
1276 | declspecs_sc_ts_nosa_ea
1277 | declspecs_sc_ts_sa_noea
1278 | declspecs_sc_ts_sa_ea
1281 /* A (possibly empty) sequence of type qualifiers and attributes. */
1282 maybe_type_quals_attrs:
1285 | declspecs_nosc_nots
1289 /* A type specifier (but not a type qualifier).
1290 Once we have seen one of these in a declaration,
1291 if a typedef name appears then it is being redeclared.
1293 The _reserved versions start with a reserved word and may appear anywhere
1294 in the declaration specifiers; the _nonreserved versions may only
1295 appear before any other type specifiers, and after that are (if names)
1298 FIXME: should the _nonreserved version be restricted to names being
1299 redeclared only? The other entries there relate only the GNU extensions
1300 and Objective C, and are historically parsed thus, and don't make sense
1301 after other type specifiers, but it might be cleaner to count them as
1304 _attr means: specifiers that either end with attributes,
1305 or are such that any following attributes would
1306 be parsed as part of the specifier.
1308 _nonattr: specifiers. */
1311 typespec_reserved_nonattr
1312 | typespec_nonreserved_nonattr
1316 typespec_reserved_attr
1319 typespec_reserved_nonattr:
1321 { OBJC_NEED_RAW_IDENTIFIER (1); }
1325 typespec_reserved_attr:
1329 typespec_nonreserved_nonattr:
1331 { /* For a typedef name, record the meaning, not the name.
1332 In case of `foo foo, bar;'. */
1333 $$ = lookup_name ($1); }
1335 | CLASSNAME protocolrefs
1336 { $$ = get_static_reference ($1, $2); }
1337 | OBJECTNAME protocolrefs
1338 { $$ = get_object_reference ($2); }
1340 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1341 - nisse@lysator.liu.se */
1342 | non_empty_protocolrefs
1343 { $$ = get_object_reference ($1); }
1345 | TYPEOF '(' expr ')'
1346 { $$ = TREE_TYPE ($3); }
1347 | TYPEOF '(' typename ')'
1348 { $$ = groktypename ($3); }
1351 /* typespec_nonreserved_attr does not exist. */
1355 | initdecls ',' maybe_resetattrs initdcl
1360 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1366 | ASM_KEYWORD '(' STRING ')'
1371 declarator maybeasm maybe_attribute '='
1372 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1373 chainon ($3, all_prefix_attributes));
1374 start_init ($<ttype>$, $2, global_bindings_p ()); }
1376 /* Note how the declaration of the variable is in effect while its init is parsed! */
1378 finish_decl ($<ttype>5, $6, $2); }
1379 | declarator maybeasm maybe_attribute
1380 { tree d = start_decl ($1, current_declspecs, 0,
1381 chainon ($3, all_prefix_attributes));
1382 finish_decl (d, NULL_TREE, $2);
1387 notype_declarator maybeasm maybe_attribute '='
1388 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1389 chainon ($3, all_prefix_attributes));
1390 start_init ($<ttype>$, $2, global_bindings_p ()); }
1392 /* Note how the declaration of the variable is in effect while its init is parsed! */
1394 finish_decl ($<ttype>5, $6, $2); }
1395 | notype_declarator maybeasm maybe_attribute
1396 { tree d = start_decl ($1, current_declspecs, 0,
1397 chainon ($3, all_prefix_attributes));
1398 finish_decl (d, NULL_TREE, $2); }
1400 /* the * rules are dummies to accept the Apollo extended syntax
1401 so that the header files compile. */
1412 | attributes attribute
1413 { $$ = chainon ($1, $2); }
1417 ATTRIBUTE '(' '(' attribute_list ')' ')'
1424 | attribute_list ',' attrib
1425 { $$ = chainon ($1, $3); }
1432 { $$ = build_tree_list ($1, NULL_TREE); }
1433 | any_word '(' IDENTIFIER ')'
1434 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1435 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1436 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1437 | any_word '(' exprlist ')'
1438 { $$ = build_tree_list ($1, $3); }
1441 /* This still leaves out most reserved keywords,
1442 shouldn't we include them? */
1451 /* Initializers. `init' is the entry point. */
1456 { really_start_incremental_init (NULL_TREE); }
1457 initlist_maybe_comma '}'
1458 { $$ = pop_init_level (0); }
1460 { $$ = error_mark_node; }
1463 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1464 initlist_maybe_comma:
1467 pedwarn ("ISO C forbids empty initializer braces"); }
1468 | initlist1 maybecomma
1473 | initlist1 ',' initelt
1476 /* `initelt' is a single element of an initializer.
1477 It may use braces. */
1479 designator_list '=' initval
1480 { if (pedantic && ! flag_isoc99)
1481 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1482 | designator initval
1484 pedwarn ("obsolete use of designated initializer without `='"); }
1486 { set_init_label ($1);
1488 pedwarn ("obsolete use of designated initializer with `:'"); }
1495 { push_init_level (0); }
1496 initlist_maybe_comma '}'
1497 { process_init_element (pop_init_level (0)); }
1499 { process_init_element ($1); }
1505 | designator_list designator
1510 { set_init_label ($2); }
1511 /* These are for labeled elements. The syntax for an array element
1512 initializer conflicts with the syntax for an Objective-C message,
1513 so don't include these productions in the Objective-C grammar. */
1515 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1516 { set_init_index ($2, $4);
1518 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1519 | '[' expr_no_commas ']'
1520 { set_init_index ($2, NULL_TREE); }
1527 pedwarn ("ISO C forbids nested functions");
1529 push_function_context ();
1530 if (! start_function (current_declspecs, $1,
1531 all_prefix_attributes))
1533 pop_function_context ();
1537 old_style_parm_decls
1538 { store_parm_decls (); }
1539 /* This used to use compstmt_or_error.
1540 That caused a bug with input `f(g) int g {}',
1541 where the use of YYERROR1 above caused an error
1542 which then was handled by compstmt_or_error.
1543 There followed a repeated execution of that same rule,
1544 which called YYERROR1 again, and so on. */
1545 save_filename save_lineno compstmt
1546 { tree decl = current_function_decl;
1547 DECL_SOURCE_FILE (decl) = $5;
1548 DECL_SOURCE_LINE (decl) = $6;
1549 finish_function (1);
1550 pop_function_context ();
1551 add_decl_stmt (decl); }
1554 notype_nested_function:
1557 pedwarn ("ISO C forbids nested functions");
1559 push_function_context ();
1560 if (! start_function (current_declspecs, $1,
1561 all_prefix_attributes))
1563 pop_function_context ();
1567 old_style_parm_decls
1568 { store_parm_decls (); }
1569 /* This used to use compstmt_or_error.
1570 That caused a bug with input `f(g) int g {}',
1571 where the use of YYERROR1 above caused an error
1572 which then was handled by compstmt_or_error.
1573 There followed a repeated execution of that same rule,
1574 which called YYERROR1 again, and so on. */
1575 save_filename save_lineno compstmt
1576 { tree decl = current_function_decl;
1577 DECL_SOURCE_FILE (decl) = $5;
1578 DECL_SOURCE_LINE (decl) = $6;
1579 finish_function (1);
1580 pop_function_context ();
1581 add_decl_stmt (decl); }
1584 /* Any kind of declarator (thus, all declarators allowed
1585 after an explicit typespec). */
1588 after_type_declarator
1592 /* A declarator that is allowed only after an explicit typespec. */
1594 after_type_declarator:
1595 '(' maybe_attribute after_type_declarator ')'
1596 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1597 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1598 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1599 /* | after_type_declarator '(' error ')' %prec '.'
1600 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1601 poplevel (0, 0, 0); } */
1602 | after_type_declarator array_declarator %prec '.'
1603 { $$ = set_array_declarator_type ($2, $1, 0); }
1604 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1605 { $$ = make_pointer_declarator ($2, $3); }
1612 /* Kinds of declarator that can appear in a parameter list
1613 in addition to notype_declarator. This is like after_type_declarator
1614 but does not allow a typedef name in parentheses as an identifier
1615 (because it would conflict with a function with that typedef as arg). */
1617 parm_declarator_starttypename
1618 | parm_declarator_nostarttypename
1621 parm_declarator_starttypename:
1622 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1623 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1624 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1625 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1626 poplevel (0, 0, 0); } */
1627 | parm_declarator_starttypename array_declarator %prec '.'
1628 { $$ = set_array_declarator_type ($2, $1, 0); }
1635 parm_declarator_nostarttypename:
1636 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1637 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1638 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1639 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1640 poplevel (0, 0, 0); } */
1641 | parm_declarator_nostarttypename array_declarator %prec '.'
1642 { $$ = set_array_declarator_type ($2, $1, 0); }
1643 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1644 { $$ = make_pointer_declarator ($2, $3); }
1645 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1646 { $$ = make_pointer_declarator ($2, $3); }
1647 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1648 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1651 /* A declarator allowed whether or not there has been
1652 an explicit typespec. These cannot redeclare a typedef-name. */
1655 notype_declarator '(' parmlist_or_identifiers %prec '.'
1656 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1657 /* | notype_declarator '(' error ')' %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1659 poplevel (0, 0, 0); } */
1660 | '(' maybe_attribute notype_declarator ')'
1661 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1662 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1663 { $$ = make_pointer_declarator ($2, $3); }
1664 | notype_declarator array_declarator %prec '.'
1665 { $$ = set_array_declarator_type ($2, $1, 0); }
1690 /* structsp_attr: struct/union/enum specifiers that either
1691 end with attributes, or are such that any following attributes would
1692 be parsed as part of the struct/union/enum specifier.
1694 structsp_nonattr: other struct/union/enum specifiers. */
1697 struct_head identifier '{'
1698 { $$ = start_struct (RECORD_TYPE, $2);
1699 /* Start scope of tag before parsing components. */
1701 component_decl_list '}' maybe_attribute
1702 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1703 | struct_head '{' component_decl_list '}' maybe_attribute
1704 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1705 $3, chainon ($1, $5));
1707 | union_head identifier '{'
1708 { $$ = start_struct (UNION_TYPE, $2); }
1709 component_decl_list '}' maybe_attribute
1710 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1711 | union_head '{' component_decl_list '}' maybe_attribute
1712 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1713 $3, chainon ($1, $5));
1715 | enum_head identifier '{'
1716 { $$ = start_enum ($2); }
1717 enumlist maybecomma_warn '}' maybe_attribute
1718 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1719 chainon ($1, $8)); }
1721 { $$ = start_enum (NULL_TREE); }
1722 enumlist maybecomma_warn '}' maybe_attribute
1723 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1724 chainon ($1, $7)); }
1728 struct_head identifier
1729 { $$ = xref_tag (RECORD_TYPE, $2); }
1730 | union_head identifier
1731 { $$ = xref_tag (UNION_TYPE, $2); }
1732 | enum_head identifier
1733 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1734 /* In ISO C, enumerated types can be referred to
1735 only if already defined. */
1736 if (pedantic && !COMPLETE_TYPE_P ($$))
1737 pedwarn ("ISO C forbids forward references to `enum' types"); }
1748 { if (pedantic && ! flag_isoc99)
1749 pedwarn ("comma at end of enumerator list"); }
1752 component_decl_list:
1753 component_decl_list2
1755 | component_decl_list2 component_decl
1756 { $$ = chainon ($1, $2);
1757 pedwarn ("no semicolon at end of struct or union"); }
1760 component_decl_list2: /* empty */
1762 | component_decl_list2 component_decl ';'
1763 { $$ = chainon ($1, $2); }
1764 | component_decl_list2 ';'
1766 pedwarn ("extra semicolon in struct or union specified"); }
1768 /* foo(sizeof(struct{ @defs(ClassName)})); */
1769 | DEFS '(' CLASSNAME ')'
1771 tree interface = lookup_interface ($3);
1774 $$ = get_class_ivars (interface);
1777 error ("cannot find interface declaration for `%s'",
1778 IDENTIFIER_POINTER ($3));
1786 declspecs_nosc_ts setspecs components
1788 POP_DECLSPEC_STACK; }
1789 | declspecs_nosc_ts setspecs save_filename save_lineno
1791 /* Support for unnamed structs or unions as members of
1792 structs or unions (which is [a] useful and [b] supports
1795 pedwarn ("ISO C doesn't support unnamed structs/unions");
1797 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1798 POP_DECLSPEC_STACK; }
1799 | declspecs_nosc_nots setspecs components_notype
1801 POP_DECLSPEC_STACK; }
1802 | declspecs_nosc_nots
1804 pedwarn ("ISO C forbids member declarations with no members");
1809 | extension component_decl
1811 RESTORE_WARN_FLAGS ($1); }
1815 component_declarator
1816 | components ',' maybe_resetattrs component_declarator
1817 { $$ = chainon ($1, $4); }
1821 component_notype_declarator
1822 | components_notype ',' maybe_resetattrs component_notype_declarator
1823 { $$ = chainon ($1, $4); }
1826 component_declarator:
1827 save_filename save_lineno declarator maybe_attribute
1828 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1829 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1830 | save_filename save_lineno
1831 declarator ':' expr_no_commas maybe_attribute
1832 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1833 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1834 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1835 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1836 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1839 component_notype_declarator:
1840 save_filename save_lineno notype_declarator maybe_attribute
1841 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1842 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1843 | save_filename save_lineno
1844 notype_declarator ':' expr_no_commas maybe_attribute
1845 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1846 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1847 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1848 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1849 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1852 /* We chain the enumerators in reverse order.
1853 They are put in forward order where enumlist is used.
1854 (The order used to be significant, but no longer is so.
1855 However, we still maintain the order, just to be clean.) */
1859 | enumlist ',' enumerator
1860 { if ($1 == error_mark_node)
1863 $$ = chainon ($3, $1); }
1865 { $$ = error_mark_node; }
1871 { $$ = build_enumerator ($1, NULL_TREE); }
1872 | identifier '=' expr_no_commas
1873 { $$ = build_enumerator ($1, $3); }
1878 { tree specs, attrs;
1879 pending_xref_error ();
1880 split_specs_attrs ($1, &specs, &attrs);
1881 /* We don't yet support attributes here. */
1882 if (attrs != NULL_TREE)
1883 warning ("attributes on type name ignored");
1884 $<ttype>$ = specs; }
1886 { $$ = build_tree_list ($<ttype>2, $3); }
1889 absdcl: /* an absolute declarator */
1895 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1897 { $$ = build_tree_list (build_tree_list (current_declspecs,
1899 all_prefix_attributes); }
1901 { $$ = build_tree_list (build_tree_list (current_declspecs,
1903 all_prefix_attributes); }
1904 | absdcl1_noea attributes
1905 { $$ = build_tree_list (build_tree_list (current_declspecs,
1907 chainon ($2, all_prefix_attributes)); }
1910 absdcl1: /* a nonempty absolute declarator */
1917 | '*' maybe_type_quals_attrs absdcl1_noea
1918 { $$ = make_pointer_declarator ($2, $3); }
1922 '*' maybe_type_quals_attrs
1923 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1924 | '*' maybe_type_quals_attrs absdcl1_ea
1925 { $$ = make_pointer_declarator ($2, $3); }
1929 '(' maybe_attribute absdcl1 ')'
1930 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1931 | direct_absdcl1 '(' parmlist
1932 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1933 | direct_absdcl1 array_declarator
1934 { $$ = set_array_declarator_type ($2, $1, 1); }
1936 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1938 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1941 /* The [...] part of a declarator for an array type. */
1945 { $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
1946 | '[' declspecs_nosc expr ']'
1947 { $$ = build_array_declarator ($3, $2, 0, 0); }
1949 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
1950 | '[' declspecs_nosc ']'
1951 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1953 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
1954 | '[' declspecs_nosc '*' ']'
1955 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1956 | '[' SCSPEC expr ']'
1957 { if (C_RID_CODE ($2) != RID_STATIC)
1958 error ("storage class specifier in array declarator");
1959 $$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
1960 | '[' SCSPEC declspecs_nosc expr ']'
1961 { if (C_RID_CODE ($2) != RID_STATIC)
1962 error ("storage class specifier in array declarator");
1963 $$ = build_array_declarator ($4, $3, 1, 0); }
1964 | '[' declspecs_nosc SCSPEC expr ']'
1965 { if (C_RID_CODE ($3) != RID_STATIC)
1966 error ("storage class specifier in array declarator");
1967 $$ = build_array_declarator ($4, $2, 1, 0); }
1970 /* A nonempty series of declarations and statements (possibly followed by
1971 some labels) that can form the body of a compound statement.
1972 NOTE: we don't allow labels on declarations; this might seem like a
1973 natural extension, but there would be a conflict between attributes
1974 on the label and prefix attributes on the declaration. */
1977 lineno_stmt_decl_or_labels_ending_stmt
1978 | lineno_stmt_decl_or_labels_ending_decl
1979 | lineno_stmt_decl_or_labels_ending_label
1981 pedwarn ("deprecated use of label at end of compound statement");
1983 | lineno_stmt_decl_or_labels_ending_error
1986 lineno_stmt_decl_or_labels_ending_stmt:
1988 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
1989 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
1990 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
1991 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
1994 lineno_stmt_decl_or_labels_ending_decl:
1996 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
1997 { if (pedantic && !flag_isoc99)
1998 pedwarn ("ISO C89 forbids mixed declarations and code"); }
1999 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2000 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2003 lineno_stmt_decl_or_labels_ending_label:
2005 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2006 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2007 | lineno_stmt_decl_or_labels_ending_label lineno_label
2008 | lineno_stmt_decl_or_labels_ending_error lineno_label
2011 lineno_stmt_decl_or_labels_ending_error:
2013 | lineno_stmt_decl_or_labels errstmt
2016 lineno_stmt_decl_or_labels:
2017 lineno_stmt_decl_or_labels_ending_stmt
2018 | lineno_stmt_decl_or_labels_ending_decl
2019 | lineno_stmt_decl_or_labels_ending_label
2020 | lineno_stmt_decl_or_labels_ending_error
2026 pushlevel: /* empty */
2029 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2031 if (objc_method_context)
2037 poplevel: /* empty */
2038 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2040 /* Start and end blocks created for the new scopes of C99. */
2041 c99_block_start: /* empty */
2044 $$ = c_begin_compound_stmt ();
2047 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2049 if (objc_method_context)
2058 /* Productions using c99_block_start and c99_block_end will need to do what's
2059 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2060 $1 is the value of c99_block_start and $2 of c99_block_end. */
2061 c99_block_end: /* empty */
2064 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2065 $$ = poplevel (kept_level_p (), 0, 0);
2066 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2067 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2074 /* Read zero or more forward-declarations for labels
2075 that nested functions can jump to. */
2080 pedwarn ("ISO C forbids label declarations"); }
2085 | label_decls label_decl
2089 LABEL identifiers_or_typenames ';'
2091 for (link = $2; link; link = TREE_CHAIN (link))
2093 tree label = shadow_label (TREE_VALUE (link));
2094 C_DECLARED_LABEL_FLAG (label) = 1;
2095 add_decl_stmt (label);
2100 /* This is the body of a function definition.
2101 It causes syntax errors to ignore to the next openbrace. */
2108 compstmt_start: '{' { compstmt_count++;
2109 $$ = c_begin_compound_stmt (); }
2111 compstmt_nostart: '}'
2112 { $$ = convert (void_type_node, integer_zero_node); }
2113 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2114 { $$ = poplevel (kept_level_p (), 1, 0);
2115 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2116 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2120 compstmt_contents_nonempty:
2125 compstmt_primary_start:
2127 { if (current_function_decl == 0)
2129 error ("braced-group within expression allowed only inside a function");
2132 /* We must force a BLOCK for this level
2133 so that, if it is not expanded later,
2134 there is a way to turn off the entire subtree of blocks
2135 that are contained in it. */
2137 push_label_level ();
2139 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2142 compstmt: compstmt_start compstmt_nostart
2143 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2147 /* Value is number of statements counted as of the closeparen. */
2149 if_prefix c99_block_lineno_labeled_stmt
2150 { c_finish_then (); }
2151 /* Make sure c_expand_end_cond is run once
2152 for each call to c_expand_start_cond.
2153 Otherwise a crash is likely. */
2159 { c_expand_start_cond (truthvalue_conversion ($3),
2161 $<itype>$ = stmt_count;
2162 if_stmt_file = $<filename>-2;
2163 if_stmt_line = $<lineno>-1; }
2166 /* This is a subroutine of stmt.
2167 It is used twice, once for valid DO statements
2168 and once for catching errors in parsing the end test. */
2174 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2176 /* In the event that a parse error prevents
2177 parsing the complete do-statement, set the
2178 condition now. Otherwise, we can get crashes at
2179 RTL-generation time. */
2180 DO_COND ($<ttype>$) = error_mark_node; }
2181 c99_block_lineno_labeled_stmt WHILE
2183 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2186 /* The forced readahead in here is because we might be at the end of a
2187 line, and the line and file won't be bumped until yylex absorbs the
2188 first token on the next line. */
2190 { if (yychar == YYEMPTY)
2192 $$ = input_filename; }
2196 { if (yychar == YYEMPTY)
2201 lineno_labeled_stmt:
2203 | lineno_label lineno_labeled_stmt
2206 /* Like lineno_labeled_stmt, but a block in C99. */
2207 c99_block_lineno_labeled_stmt:
2208 c99_block_start lineno_labeled_stmt c99_block_end
2210 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2214 save_filename save_lineno stmt
2217 STMT_LINENO ($3) = $2;
2218 /* ??? We currently have no way of recording
2219 the filename for a statement. This probably
2220 matters little in practice at the moment,
2221 but I suspect that problems will occur when
2222 doing inlining at the tree level. */
2228 save_filename save_lineno label
2231 STMT_LINENO ($3) = $2;
2236 select_or_iter_stmt:
2238 { c_expand_start_else ();
2239 $<itype>1 = stmt_count; }
2240 c99_block_lineno_labeled_stmt
2242 c_expand_end_cond ();
2243 if (extra_warnings && stmt_count == $<itype>1)
2244 warning ("empty body in an else-statement"); }
2245 | simple_if %prec IF
2246 { c_expand_end_cond ();
2247 /* This warning is here instead of in simple_if, because we
2248 do not want a warning if an empty if is followed by an
2249 else statement. Increment stmt_count so we don't
2250 give a second error if this is a nested `if'. */
2251 if (extra_warnings && stmt_count++ == $<itype>1)
2252 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2253 "empty body in an if-statement"); }
2254 /* Make sure c_expand_end_cond is run once
2255 for each call to c_expand_start_cond.
2256 Otherwise a crash is likely. */
2257 | simple_if ELSE error
2258 { c_expand_end_cond (); }
2262 { $4 = truthvalue_conversion ($4);
2264 = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
2265 c99_block_lineno_labeled_stmt
2266 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2269 { DO_COND ($1) = truthvalue_conversion ($3); }
2270 | do_stmt_start error
2273 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2274 NULL_TREE, NULL_TREE);
2275 add_stmt ($<ttype>$); }
2278 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2281 FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
2283 { FOR_EXPR ($<ttype>2) = $9; }
2284 c99_block_lineno_labeled_stmt
2285 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2286 | SWITCH '(' expr ')'
2288 $<ttype>$ = c_start_case ($3); }
2289 c99_block_lineno_labeled_stmt
2290 { c_finish_case (); }
2295 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2297 { check_for_loop_decls (); }
2300 /* Parse a single real statement, not including any labels. */
2303 { stmt_count++; $$ = $1; }
2306 $$ = c_expand_expr_stmt ($1); }
2307 | c99_block_start select_or_iter_stmt c99_block_end
2309 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2313 $$ = add_stmt (build_break_stmt ()); }
2316 $$ = add_stmt (build_continue_stmt ()); }
2319 $$ = c_expand_return (NULL_TREE); }
2322 $$ = c_expand_return ($2); }
2323 | ASM_KEYWORD maybe_type_qual '(' STRING ')' ';'
2325 $$ = simple_asm_stmt ($4); }
2326 /* This is the case with just output operands. */
2327 | ASM_KEYWORD maybe_type_qual '(' STRING ':' asm_operands ')' ';'
2329 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2330 /* This is the case with input operands as well. */
2331 | ASM_KEYWORD maybe_type_qual '(' STRING ':' asm_operands ':'
2332 asm_operands ')' ';'
2334 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2335 /* This is the case with clobbered registers as well. */
2336 | ASM_KEYWORD maybe_type_qual '(' STRING ':' asm_operands ':'
2337 asm_operands ':' asm_clobbers ')' ';'
2339 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2340 | GOTO identifier ';'
2343 decl = lookup_label ($2);
2346 TREE_USED (decl) = 1;
2347 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2354 pedwarn ("ISO C forbids `goto *expr;'");
2356 $3 = convert (ptr_type_node, $3);
2357 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2362 /* Any kind of label, including jump labels and case labels.
2363 ANSI C accepts labels only before statements, but we allow them
2364 also at the end of a compound statement. */
2366 label: CASE expr_no_commas ':'
2368 $$ = do_case ($2, NULL_TREE); }
2369 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2371 $$ = do_case ($2, $4); }
2374 $$ = do_case (NULL_TREE, NULL_TREE); }
2375 | identifier save_filename save_lineno ':' maybe_attribute
2376 { tree label = define_label ($2, $3, $1);
2380 decl_attributes (&label, $5, 0);
2381 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2388 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2392 { emit_line_note (input_filename, lineno);
2395 { emit_line_note (input_filename, lineno); }
2404 /* These are the operands other than the first string and colon
2405 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2406 asm_operands: /* empty */
2408 | nonnull_asm_operands
2411 nonnull_asm_operands:
2413 | nonnull_asm_operands ',' asm_operand
2414 { $$ = chainon ($1, $3); }
2419 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2420 | '[' identifier ']' STRING '(' expr ')'
2421 { $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2426 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2427 | asm_clobbers ',' STRING
2428 { $$ = tree_cons (NULL_TREE, $3, $1); }
2431 /* This is what appears inside the parens in a function declarator.
2432 Its value is a list of ..._TYPE nodes. Attributes must appear here
2433 to avoid a conflict with their appearance after an open parenthesis
2434 in an abstract declarator, as in
2435 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2439 clear_parm_order ();
2440 declare_parm_level (0); }
2443 parmlist_tags_warning ();
2444 poplevel (0, 0, 0); }
2452 pedwarn ("ISO C forbids forward parameter declarations");
2453 /* Mark the forward decls as such. */
2454 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2455 TREE_ASM_WRITTEN (parm) = 1;
2456 clear_parm_order (); }
2458 { /* Dummy action so attributes are in known place
2459 on parser stack. */ }
2463 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2466 /* This is what appears inside the parens in a function declarator.
2467 Is value is represented in the format that grokdeclarator expects. */
2468 parmlist_2: /* empty */
2469 { $$ = get_parm_info (0); }
2471 { $$ = get_parm_info (0);
2472 /* Gcc used to allow this as an extension. However, it does
2473 not work for all targets, and thus has been disabled.
2474 Also, since func (...) and func () are indistinguishable,
2475 it caused problems with the code in expand_builtin which
2476 tries to verify that BUILT_IN_NEXT_ARG is being used
2478 error ("ISO C requires a named argument before `...'");
2481 { $$ = get_parm_info (1); }
2482 | parms ',' ELLIPSIS
2483 { $$ = get_parm_info (0); }
2488 { push_parm_decl ($1); }
2490 { push_parm_decl ($3); }
2493 /* A single parameter declaration or parameter type name,
2494 as found in a parmlist. */
2496 declspecs_ts setspecs parm_declarator maybe_attribute
2497 { $$ = build_tree_list (build_tree_list (current_declspecs,
2499 chainon ($4, all_prefix_attributes));
2500 POP_DECLSPEC_STACK; }
2501 | declspecs_ts setspecs notype_declarator maybe_attribute
2502 { $$ = build_tree_list (build_tree_list (current_declspecs,
2504 chainon ($4, all_prefix_attributes));
2505 POP_DECLSPEC_STACK; }
2506 | declspecs_ts setspecs absdcl_maybe_attribute
2508 POP_DECLSPEC_STACK; }
2509 | declspecs_nots setspecs notype_declarator maybe_attribute
2510 { $$ = build_tree_list (build_tree_list (current_declspecs,
2512 chainon ($4, all_prefix_attributes));
2513 POP_DECLSPEC_STACK; }
2515 | declspecs_nots setspecs absdcl_maybe_attribute
2517 POP_DECLSPEC_STACK; }
2520 /* The first parm, which must suck attributes from off the top of the parser
2523 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2524 { $$ = build_tree_list (build_tree_list (current_declspecs,
2526 chainon ($4, all_prefix_attributes));
2527 POP_DECLSPEC_STACK; }
2528 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2529 { $$ = build_tree_list (build_tree_list (current_declspecs,
2531 chainon ($4, all_prefix_attributes));
2532 POP_DECLSPEC_STACK; }
2533 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2535 POP_DECLSPEC_STACK; }
2536 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2537 { $$ = build_tree_list (build_tree_list (current_declspecs,
2539 chainon ($4, all_prefix_attributes));
2540 POP_DECLSPEC_STACK; }
2542 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2544 POP_DECLSPEC_STACK; }
2549 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2550 all_prefix_attributes = prefix_attributes; }
2553 /* This is used in a function definition
2554 where either a parmlist or an identifier list is ok.
2555 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2556 parmlist_or_identifiers:
2558 clear_parm_order ();
2559 declare_parm_level (1); }
2560 parmlist_or_identifiers_1
2562 parmlist_tags_warning ();
2563 poplevel (0, 0, 0); }
2566 parmlist_or_identifiers_1:
2570 for (t = $1; t; t = TREE_CHAIN (t))
2571 if (TREE_VALUE (t) == NULL_TREE)
2572 error ("`...' in old-style identifier list");
2573 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2576 /* A nonempty list of identifiers. */
2579 { $$ = build_tree_list (NULL_TREE, $1); }
2580 | identifiers ',' IDENTIFIER
2581 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2584 /* A nonempty list of identifiers, including typenames. */
2585 identifiers_or_typenames:
2587 { $$ = build_tree_list (NULL_TREE, $1); }
2588 | identifiers_or_typenames ',' identifier
2589 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2594 { $$ = SAVE_WARN_FLAGS();
2596 warn_pointer_arith = 0; }
2600 /* Objective-C productions. */
2610 if (objc_implementation_context)
2612 finish_class (objc_implementation_context);
2613 objc_ivar_chain = NULL_TREE;
2614 objc_implementation_context = NULL_TREE;
2617 warning ("`@end' must appear in an implementation context");
2621 /* A nonempty list of identifiers. */
2624 { $$ = build_tree_list (NULL_TREE, $1); }
2625 | identifier_list ',' identifier
2626 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2630 CLASS identifier_list ';'
2632 objc_declare_class ($2);
2636 ALIAS identifier identifier ';'
2638 objc_declare_alias ($2, $3);
2642 INTERFACE identifier protocolrefs '{'
2644 objc_interface_context = objc_ivar_context
2645 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2646 objc_public_flag = 0;
2650 continue_class (objc_interface_context);
2655 finish_class (objc_interface_context);
2656 objc_interface_context = NULL_TREE;
2659 | INTERFACE identifier protocolrefs
2661 objc_interface_context
2662 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2663 continue_class (objc_interface_context);
2668 finish_class (objc_interface_context);
2669 objc_interface_context = NULL_TREE;
2672 | INTERFACE identifier ':' identifier protocolrefs '{'
2674 objc_interface_context = objc_ivar_context
2675 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2676 objc_public_flag = 0;
2680 continue_class (objc_interface_context);
2685 finish_class (objc_interface_context);
2686 objc_interface_context = NULL_TREE;
2689 | INTERFACE identifier ':' identifier protocolrefs
2691 objc_interface_context
2692 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2693 continue_class (objc_interface_context);
2698 finish_class (objc_interface_context);
2699 objc_interface_context = NULL_TREE;
2702 | IMPLEMENTATION identifier '{'
2704 objc_implementation_context = objc_ivar_context
2705 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2706 objc_public_flag = 0;
2711 = continue_class (objc_implementation_context);
2714 | IMPLEMENTATION identifier
2716 objc_implementation_context
2717 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2719 = continue_class (objc_implementation_context);
2722 | IMPLEMENTATION identifier ':' identifier '{'
2724 objc_implementation_context = objc_ivar_context
2725 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2726 objc_public_flag = 0;
2731 = continue_class (objc_implementation_context);
2734 | IMPLEMENTATION identifier ':' identifier
2736 objc_implementation_context
2737 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2739 = continue_class (objc_implementation_context);
2742 | INTERFACE identifier '(' identifier ')' protocolrefs
2744 objc_interface_context
2745 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2746 continue_class (objc_interface_context);
2751 finish_class (objc_interface_context);
2752 objc_interface_context = NULL_TREE;
2755 | IMPLEMENTATION identifier '(' identifier ')'
2757 objc_implementation_context
2758 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2760 = continue_class (objc_implementation_context);
2765 PROTOCOL identifier protocolrefs
2767 objc_pq_context = 1;
2768 objc_interface_context
2769 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2773 objc_pq_context = 0;
2774 finish_protocol(objc_interface_context);
2775 objc_interface_context = NULL_TREE;
2777 /* The @protocol forward-declaration production introduces a
2778 reduce/reduce conflict on ';', which should be resolved in
2779 favor of the production 'identifier_list -> identifier'. */
2780 | PROTOCOL identifier_list ';'
2782 objc_declare_protocols ($2);
2791 | non_empty_protocolrefs
2794 non_empty_protocolrefs:
2795 ARITHCOMPARE identifier_list ARITHCOMPARE
2797 if ($1 == LT_EXPR && $3 == GT_EXPR)
2805 ivar_decl_list visibility_spec ivar_decls
2810 PRIVATE { objc_public_flag = 2; }
2811 | PROTECTED { objc_public_flag = 0; }
2812 | PUBLIC { objc_public_flag = 1; }
2820 | ivar_decls ivar_decl ';'
2824 pedwarn ("extra semicolon in struct or union specified");
2829 /* There is a shift-reduce conflict here, because `components' may
2830 start with a `typename'. It happens that shifting (the default resolution)
2831 does the right thing, because it treats the `typename' as part of
2832 a `typed_typespecs'.
2834 It is possible that this same technique would allow the distinction
2835 between `notype_initdecls' and `initdecls' to be eliminated.
2836 But I am being cautious and not trying it. */
2839 declspecs_nosc_ts setspecs ivars
2841 POP_DECLSPEC_STACK; }
2842 | declspecs_nosc_nots setspecs ivars
2844 POP_DECLSPEC_STACK; }
2853 | ivars ',' maybe_resetattrs ivar_declarator
2859 $$ = add_instance_variable (objc_ivar_context,
2861 $1, current_declspecs,
2864 | declarator ':' expr_no_commas
2866 $$ = add_instance_variable (objc_ivar_context,
2868 $1, current_declspecs, $3);
2870 | ':' expr_no_commas
2872 $$ = add_instance_variable (objc_ivar_context,
2875 current_declspecs, $2);
2881 { objc_inherit_code = CLASS_METHOD_DECL; }
2883 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2889 objc_pq_context = 1;
2890 if (!objc_implementation_context)
2891 fatal_error ("method definition not in class context");
2895 objc_pq_context = 0;
2896 if (objc_inherit_code == CLASS_METHOD_DECL)
2897 add_class_method (objc_implementation_context, $3);
2899 add_instance_method (objc_implementation_context, $3);
2900 start_method_def ($3);
2904 continue_method_def ();
2908 finish_method_def ();
2912 /* the reason for the strange actions in this rule
2913 is so that notype_initdecls when reached via datadef
2914 can find a valid list of type and sc specs in $0. */
2918 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2921 methodprotolist2: /* eliminates a shift/reduce conflict */
2924 | methodprotolist2 methodproto
2925 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2936 /* Remember protocol qualifiers in prototypes. */
2937 objc_pq_context = 1;
2941 /* Forget protocol qualifiers here. */
2942 objc_pq_context = 0;
2943 if (objc_inherit_code == CLASS_METHOD_DECL)
2944 add_class_method (objc_interface_context, $3);
2946 add_instance_method (objc_interface_context, $3);
2952 '(' typename ')' unaryselector
2954 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2959 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2962 | '(' typename ')' keywordselector optparmlist
2964 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2967 | keywordselector optparmlist
2969 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
2973 /* "optarglist" assumes that start_method_def has already been called...
2974 if it is not, the "xdecls" will not be placed in the proper scope */
2981 /* to get around the following situation: "int foo (int a) int b; {}" that
2982 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
2997 declspecs_ts setspecs myparms ';'
2998 { POP_DECLSPEC_STACK; }
3000 { shadow_tag ($1); }
3001 | declspecs_nots ';'
3002 { pedwarn ("empty declaration"); }
3007 { push_parm_decl ($1); }
3008 | myparms ',' myparm
3009 { push_parm_decl ($3); }
3012 /* A single parameter declaration or parameter type name,
3013 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3016 parm_declarator maybe_attribute
3017 { $$ = build_tree_list (build_tree_list (current_declspecs,
3019 chainon ($2, all_prefix_attributes)); }
3020 | notype_declarator maybe_attribute
3021 { $$ = build_tree_list (build_tree_list (current_declspecs,
3023 chainon ($2, all_prefix_attributes)); }
3024 | absdcl_maybe_attribute
3035 /* oh what a kludge! */
3036 $$ = objc_ellipsis_node;
3044 /* returns a tree list node generated by get_parm_info */
3057 | keywordselector keyworddecl
3059 $$ = chainon ($1, $2);
3072 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3073 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3074 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3075 | TYPESPEC | TYPE_QUAL
3079 selector ':' '(' typename ')' identifier
3081 $$ = build_keyword_decl ($1, $4, $6);
3084 | selector ':' identifier
3086 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3089 | ':' '(' typename ')' identifier
3091 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3096 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3107 | keywordarglist keywordarg
3109 $$ = chainon ($1, $2);
3117 if (TREE_CHAIN ($1) == NULL_TREE)
3118 /* just return the expr., remove a level of indirection */
3119 $$ = TREE_VALUE ($1);
3121 /* we have a comma expr., we will collapse later */
3127 selector ':' keywordexpr
3129 $$ = build_tree_list ($1, $3);
3133 $$ = build_tree_list (NULL_TREE, $2);
3141 $$ = get_class_reference ($1);
3147 { objc_receiver_context = 1; }
3149 { objc_receiver_context = 0; }
3152 $$ = build_tree_list ($3, $5);
3163 | keywordnamelist keywordname
3165 $$ = chainon ($1, $2);
3172 $$ = build_tree_list ($1, NULL_TREE);
3176 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3181 SELECTOR '(' selectorarg ')'
3188 PROTOCOL '(' identifier ')'
3194 /* extension to support C-structures in the archiver */
3197 ENCODE '(' typename ')'
3199 $$ = groktypename ($3);
3206 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3207 cpplib.h's token codes into yacc's token codes. */
3209 static enum cpp_ttype last_token;
3211 /* The reserved keyword table. */
3215 ENUM_BITFIELD(rid) rid : 16;
3216 unsigned int disable : 16;
3219 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3221 #define D_TRAD 0x01 /* not in traditional C */
3222 #define D_C89 0x02 /* not in C89 */
3223 #define D_EXT 0x04 /* GCC extension */
3224 #define D_EXT89 0x08 /* GCC extension incorporated in C99 */
3225 #define D_OBJC 0x10 /* Objective C only */
3227 static const struct resword reswords[] =
3229 { "_Bool", RID_BOOL, 0 },
3230 { "_Complex", RID_COMPLEX, 0 },
3231 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3232 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3233 { "__alignof", RID_ALIGNOF, 0 },
3234 { "__alignof__", RID_ALIGNOF, 0 },
3235 { "__asm", RID_ASM, 0 },
3236 { "__asm__", RID_ASM, 0 },
3237 { "__attribute", RID_ATTRIBUTE, 0 },
3238 { "__attribute__", RID_ATTRIBUTE, 0 },
3239 { "__bounded", RID_BOUNDED, 0 },
3240 { "__bounded__", RID_BOUNDED, 0 },
3241 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3242 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3243 { "__builtin_va_arg", RID_VA_ARG, 0 },
3244 { "__complex", RID_COMPLEX, 0 },
3245 { "__complex__", RID_COMPLEX, 0 },
3246 { "__const", RID_CONST, 0 },
3247 { "__const__", RID_CONST, 0 },
3248 { "__extension__", RID_EXTENSION, 0 },
3249 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3250 { "__imag", RID_IMAGPART, 0 },
3251 { "__imag__", RID_IMAGPART, 0 },
3252 { "__inline", RID_INLINE, 0 },
3253 { "__inline__", RID_INLINE, 0 },
3254 { "__label__", RID_LABEL, 0 },
3255 { "__ptrbase", RID_PTRBASE, 0 },
3256 { "__ptrbase__", RID_PTRBASE, 0 },
3257 { "__ptrextent", RID_PTREXTENT, 0 },
3258 { "__ptrextent__", RID_PTREXTENT, 0 },
3259 { "__ptrvalue", RID_PTRVALUE, 0 },
3260 { "__ptrvalue__", RID_PTRVALUE, 0 },
3261 { "__real", RID_REALPART, 0 },
3262 { "__real__", RID_REALPART, 0 },
3263 { "__restrict", RID_RESTRICT, 0 },
3264 { "__restrict__", RID_RESTRICT, 0 },
3265 { "__signed", RID_SIGNED, 0 },
3266 { "__signed__", RID_SIGNED, 0 },
3267 { "__typeof", RID_TYPEOF, 0 },
3268 { "__typeof__", RID_TYPEOF, 0 },
3269 { "__unbounded", RID_UNBOUNDED, 0 },
3270 { "__unbounded__", RID_UNBOUNDED, 0 },
3271 { "__volatile", RID_VOLATILE, 0 },
3272 { "__volatile__", RID_VOLATILE, 0 },
3273 { "asm", RID_ASM, D_EXT },
3274 { "auto", RID_AUTO, 0 },
3275 { "break", RID_BREAK, 0 },
3276 { "case", RID_CASE, 0 },
3277 { "char", RID_CHAR, 0 },
3278 { "const", RID_CONST, D_TRAD },
3279 { "continue", RID_CONTINUE, 0 },
3280 { "default", RID_DEFAULT, 0 },
3281 { "do", RID_DO, 0 },
3282 { "double", RID_DOUBLE, 0 },
3283 { "else", RID_ELSE, 0 },
3284 { "enum", RID_ENUM, 0 },
3285 { "extern", RID_EXTERN, 0 },
3286 { "float", RID_FLOAT, 0 },
3287 { "for", RID_FOR, 0 },
3288 { "goto", RID_GOTO, 0 },
3289 { "if", RID_IF, 0 },
3290 { "inline", RID_INLINE, D_TRAD|D_EXT89 },
3291 { "int", RID_INT, 0 },
3292 { "long", RID_LONG, 0 },
3293 { "register", RID_REGISTER, 0 },
3294 { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
3295 { "return", RID_RETURN, 0 },
3296 { "short", RID_SHORT, 0 },
3297 { "signed", RID_SIGNED, D_TRAD },
3298 { "sizeof", RID_SIZEOF, 0 },
3299 { "static", RID_STATIC, 0 },
3300 { "struct", RID_STRUCT, 0 },
3301 { "switch", RID_SWITCH, 0 },
3302 { "typedef", RID_TYPEDEF, 0 },
3303 { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
3304 { "union", RID_UNION, 0 },
3305 { "unsigned", RID_UNSIGNED, 0 },
3306 { "void", RID_VOID, 0 },
3307 { "volatile", RID_VOLATILE, D_TRAD },
3308 { "while", RID_WHILE, 0 },
3310 { "id", RID_ID, D_OBJC },
3312 /* These objc keywords are recognized only immediately after
3314 { "class", RID_AT_CLASS, D_OBJC },
3315 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3316 { "defs", RID_AT_DEFS, D_OBJC },
3317 { "encode", RID_AT_ENCODE, D_OBJC },
3318 { "end", RID_AT_END, D_OBJC },
3319 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3320 { "interface", RID_AT_INTERFACE, D_OBJC },
3321 { "private", RID_AT_PRIVATE, D_OBJC },
3322 { "protected", RID_AT_PROTECTED, D_OBJC },
3323 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3324 { "public", RID_AT_PUBLIC, D_OBJC },
3325 { "selector", RID_AT_SELECTOR, D_OBJC },
3327 /* These are recognized only in protocol-qualifier context
3329 { "bycopy", RID_BYCOPY, D_OBJC },
3330 { "byref", RID_BYREF, D_OBJC },
3331 { "in", RID_IN, D_OBJC },
3332 { "inout", RID_INOUT, D_OBJC },
3333 { "oneway", RID_ONEWAY, D_OBJC },
3334 { "out", RID_OUT, D_OBJC },
3337 #define N_reswords (sizeof reswords / sizeof (struct resword))
3339 /* Table mapping from RID_* constants to yacc token numbers.
3340 Unfortunately we have to have entries for all the keywords in all
3342 static const short rid_to_yy[RID_MAX] =
3344 /* RID_STATIC */ SCSPEC,
3345 /* RID_UNSIGNED */ TYPESPEC,
3346 /* RID_LONG */ TYPESPEC,
3347 /* RID_CONST */ TYPE_QUAL,
3348 /* RID_EXTERN */ SCSPEC,
3349 /* RID_REGISTER */ SCSPEC,
3350 /* RID_TYPEDEF */ SCSPEC,
3351 /* RID_SHORT */ TYPESPEC,
3352 /* RID_INLINE */ SCSPEC,
3353 /* RID_VOLATILE */ TYPE_QUAL,
3354 /* RID_SIGNED */ TYPESPEC,
3355 /* RID_AUTO */ SCSPEC,
3356 /* RID_RESTRICT */ TYPE_QUAL,
3359 /* RID_BOUNDED */ TYPE_QUAL,
3360 /* RID_UNBOUNDED */ TYPE_QUAL,
3361 /* RID_COMPLEX */ TYPESPEC,
3365 /* RID_VIRTUAL */ 0,
3366 /* RID_EXPLICIT */ 0,
3368 /* RID_MUTABLE */ 0,
3371 /* RID_IN */ TYPE_QUAL,
3372 /* RID_OUT */ TYPE_QUAL,
3373 /* RID_INOUT */ TYPE_QUAL,
3374 /* RID_BYCOPY */ TYPE_QUAL,
3375 /* RID_BYREF */ TYPE_QUAL,
3376 /* RID_ONEWAY */ TYPE_QUAL,
3379 /* RID_INT */ TYPESPEC,
3380 /* RID_CHAR */ TYPESPEC,
3381 /* RID_FLOAT */ TYPESPEC,
3382 /* RID_DOUBLE */ TYPESPEC,
3383 /* RID_VOID */ TYPESPEC,
3384 /* RID_ENUM */ ENUM,
3385 /* RID_STRUCT */ STRUCT,
3386 /* RID_UNION */ UNION,
3388 /* RID_ELSE */ ELSE,
3389 /* RID_WHILE */ WHILE,
3392 /* RID_SWITCH */ SWITCH,
3393 /* RID_CASE */ CASE,
3394 /* RID_DEFAULT */ DEFAULT,
3395 /* RID_BREAK */ BREAK,
3396 /* RID_CONTINUE */ CONTINUE,
3397 /* RID_RETURN */ RETURN,
3398 /* RID_GOTO */ GOTO,
3399 /* RID_SIZEOF */ SIZEOF,
3402 /* RID_ASM */ ASM_KEYWORD,
3403 /* RID_TYPEOF */ TYPEOF,
3404 /* RID_ALIGNOF */ ALIGNOF,
3405 /* RID_ATTRIBUTE */ ATTRIBUTE,
3406 /* RID_VA_ARG */ VA_ARG,
3407 /* RID_EXTENSION */ EXTENSION,
3408 /* RID_IMAGPART */ IMAGPART,
3409 /* RID_REALPART */ REALPART,
3410 /* RID_LABEL */ LABEL,
3411 /* RID_PTRBASE */ PTR_BASE,
3412 /* RID_PTREXTENT */ PTR_EXTENT,
3413 /* RID_PTRVALUE */ PTR_VALUE,
3415 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3416 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3418 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3419 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3420 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3423 /* RID_BOOL */ TYPESPEC,
3427 /* RID_PRIVATE */ 0,
3428 /* RID_PROTECTED */ 0,
3429 /* RID_TEMPLATE */ 0,
3434 /* RID_NAMESPACE */ 0,
3436 /* RID_OPERATOR */ 0,
3441 /* RID_TYPENAME */ 0,
3446 /* RID_CONSTCAST */ 0,
3447 /* RID_DYNCAST */ 0,
3448 /* RID_REINTCAST */ 0,
3449 /* RID_STATCAST */ 0,
3451 /* alternate spellings */
3465 /* RID_ID */ OBJECTNAME,
3466 /* RID_AT_ENCODE */ ENCODE,
3467 /* RID_AT_END */ END,
3468 /* RID_AT_CLASS */ CLASS,
3469 /* RID_AT_ALIAS */ ALIAS,
3470 /* RID_AT_DEFS */ DEFS,
3471 /* RID_AT_PRIVATE */ PRIVATE,
3472 /* RID_AT_PROTECTED */ PROTECTED,
3473 /* RID_AT_PUBLIC */ PUBLIC,
3474 /* RID_AT_PROTOCOL */ PROTOCOL,
3475 /* RID_AT_SELECTOR */ SELECTOR,
3476 /* RID_AT_INTERFACE */ INTERFACE,
3477 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3485 int mask = (flag_isoc99 ? 0 : D_C89)
3486 | (flag_traditional ? D_TRAD : 0)
3487 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3489 if (c_language != clk_objective_c)
3492 /* It is not necessary to register ridpointers as a GC root, because
3493 all the trees it points to are permanently interned in the
3494 get_identifier hash anyway. */
3495 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3496 for (i = 0; i < N_reswords; i++)
3498 /* If a keyword is disabled, do not enter it into the table
3499 and so create a canonical spelling that isn't a keyword. */
3500 if (reswords[i].disable & mask)
3503 id = get_identifier (reswords[i].word);
3504 C_RID_CODE (id) = reswords[i].rid;
3505 C_IS_RESERVED_WORD (id) = 1;
3506 ridpointers [(int) reswords[i].rid] = id;
3510 #define NAME(type) cpp_type2name (type)
3516 const char *string = _(msgid);
3518 if (last_token == CPP_EOF)
3519 error ("%s at end of input", string);
3520 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3522 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3523 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3524 if (val <= UCHAR_MAX && ISGRAPH (val))
3525 error ("%s before %s'%c'", string, ell, val);
3527 error ("%s before %s'\\x%x'", string, ell, val);
3529 else if (last_token == CPP_STRING
3530 || last_token == CPP_WSTRING)
3531 error ("%s before string constant", string);
3532 else if (last_token == CPP_NUMBER)
3533 error ("%s before numeric constant", string);
3534 else if (last_token == CPP_NAME)
3535 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3537 error ("%s before '%s' token", string, NAME(last_token));
3546 int objc_force_identifier = objc_need_raw_identifier;
3547 OBJC_NEED_RAW_IDENTIFIER (0);
3550 if (C_IS_RESERVED_WORD (yylval.ttype))
3552 enum rid rid_code = C_RID_CODE (yylval.ttype);
3555 /* Turn non-typedefed refs to "id" into plain identifiers; this
3556 allows constructs like "void foo(id id);" to work. */
3557 if (rid_code == RID_ID)
3559 decl = lookup_name (yylval.ttype);
3560 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3564 if (!OBJC_IS_AT_KEYWORD (rid_code)
3565 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3568 int yycode = rid_to_yy[(int) rid_code];
3569 if (yycode == STRING_FUNC_NAME)
3571 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3572 to string constants. */
3573 const char *name = fname_string (rid_code);
3576 = combine_strings (build_string (strlen (name) + 1, name));
3577 last_token = CPP_STRING; /* so yyerror won't choke */
3581 /* Return the canonical spelling for this keyword. */
3582 yylval.ttype = ridpointers[(int) rid_code];
3587 decl = lookup_name (yylval.ttype);
3590 if (TREE_CODE (decl) == TYPE_DECL)
3596 tree objc_interface_decl = is_class_name (yylval.ttype);
3597 /* ObjC class names are in the same namespace as variables and
3598 typedefs, and hence are shadowed by local declarations. */
3599 if (objc_interface_decl
3600 && (global_bindings_p ()
3601 || (!objc_force_identifier && !decl)))
3603 yylval.ttype = objc_interface_decl;
3617 last_token = c_lex (&yylval.ttype);
3620 case CPP_EQ: return '=';
3621 case CPP_NOT: return '!';
3622 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3623 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3624 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3625 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3626 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3627 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3628 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3629 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3630 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3631 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3632 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3633 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3635 case CPP_COMPL: return '~';
3636 case CPP_AND_AND: return ANDAND;
3637 case CPP_OR_OR: return OROR;
3638 case CPP_QUERY: return '?';
3639 case CPP_OPEN_PAREN: return '(';
3640 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3641 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3642 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3643 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3645 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3646 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3647 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3648 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3649 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3650 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3651 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3652 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3653 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3654 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3656 case CPP_OPEN_SQUARE: return '[';
3657 case CPP_CLOSE_SQUARE: return ']';
3658 case CPP_OPEN_BRACE: return '{';
3659 case CPP_CLOSE_BRACE: return '}';
3660 case CPP_ELLIPSIS: return ELLIPSIS;
3662 case CPP_PLUS_PLUS: return PLUSPLUS;
3663 case CPP_MINUS_MINUS: return MINUSMINUS;
3664 case CPP_DEREF: return POINTSAT;
3665 case CPP_DOT: return '.';
3667 /* The following tokens may affect the interpretation of any
3668 identifiers following, if doing Objective-C. */
3669 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3670 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3671 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3672 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3678 return yylexname ();
3689 /* This token is Objective-C specific. It gives the next token
3690 special significance. */
3693 last_token = c_lex (&yylval.ttype);
3695 if (last_token == CPP_NAME
3696 && C_IS_RESERVED_WORD (yylval.ttype)
3697 && OBJC_IS_AT_KEYWORD (C_RID_CODE (yylval.ttype)))
3698 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3699 else if (last_token == CPP_STRING || last_token == CPP_WSTRING)
3702 /* Fall through... */
3705 /* These tokens are C++ specific (and will not be generated
3706 in C mode, but let's be cautious). */
3708 case CPP_DEREF_STAR:
3714 /* These tokens should not survive translation phase 4. */
3717 error ("syntax error at '%s' token", NAME(last_token));
3730 timevar_push (TV_LEX);
3732 timevar_pop (TV_LEX);
3736 /* Sets the value of the 'yydebug' variable to VALUE.
3737 This is a function so we don't have to have YYDEBUG defined
3738 in order to build the compiler. */
3741 c_set_yydebug (value)
3747 warning ("YYDEBUG not defined");
3751 /* Function used when yydebug is set, to print a token in more detail. */
3754 yyprint (file, yychar, yyl)
3761 fprintf (file, " [%s]", NAME(last_token));
3771 if (IDENTIFIER_POINTER (t))
3772 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3776 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3777 if (TREE_CODE (t) == INTEGER_CST)
3779 #if HOST_BITS_PER_WIDE_INT == 64
3780 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3783 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3790 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3796 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3801 /* This is not the ideal place to put these, but we have to get them out
3802 of c-lex.c because cp/lex.c has its own versions. */
3804 /* Return something to represent absolute declarators containing a *.
3805 TARGET is the absolute declarator that the * contains.
3806 TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
3807 to apply to the pointer type, represented as identifiers, possible mixed
3810 We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
3811 if attributes are present) and whose type is the modifier list. */
3814 make_pointer_declarator (type_quals_attrs, target)
3815 tree type_quals_attrs, target;
3818 tree itarget = target;
3819 split_specs_attrs (type_quals_attrs, &quals, &attrs);
3820 if (attrs != NULL_TREE)
3821 itarget = tree_cons (attrs, target, NULL_TREE);
3822 return build1 (INDIRECT_REF, quals, itarget);