| blob | 22bab99077a663ce9ec66320ba8272de534c1621 |
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, 2002, 2003 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
10 version.
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
15 for more details.
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
20 02111-1307, USA. */
22 /* This file defines the grammar of C and that of Objective C.
23 @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only.
24 @@ifc ... @@end_ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
31 @@ifc
32 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
33 @@end_ifc
35 %{
36 #include "config.h"
37 #include "system.h"
38 #include "coretypes.h"
39 #include "tm.h"
40 #include "tree.h"
41 #include "input.h"
42 #include "cpplib.h"
43 #include "intl.h"
44 #include "timevar.h"
45 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
46 #include "c-tree.h"
47 #include "flags.h"
48 #include "varray.h"
49 #include "output.h"
50 #include "toplev.h"
51 #include "ggc.h"
53 @@ifobjc
54 #include "objc-act.h"
55 @@end_ifobjc
57 /* Like YYERROR but do call yyerror. */
58 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
60 /* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
67 static short *malloced_yyss;
68 static void *malloced_yyvs;
70 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
71 do { \
72 size_t newsize; \
73 short *newss; \
74 YYSTYPE *newvs; \
75 newsize = *(YYSSZ) *= 2; \
76 if (malloced_yyss) \
77 { \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
80 } \
81 else \
82 { \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
85 if (newss) \
86 memcpy (newss, *(SS), (SSSIZE)); \
87 if (newvs) \
88 memcpy (newvs, *(VS), (VSSIZE)); \
89 } \
90 if (!newss || !newvs) \
91 { \
92 yyerror (MSG); \
93 return 2; \
94 } \
95 *(SS) = newss; \
96 *(VS) = newvs; \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
99 } while (0)
100 %}
102 %start program
104 %union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
107 /* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
109 %token IDENTIFIER
111 /* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
114 %token TYPENAME
116 /* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118 %token SCSPEC /* Storage class other than static. */
119 %token STATIC /* Static storage class. */
121 /* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
123 %token TYPESPEC
125 /* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
127 %token TYPE_QUAL
129 /* Character or numeric constants.
130 yylval is the node for the constant. */
131 %token CONSTANT
133 /* String constants in raw form.
134 yylval is a STRING_CST node. */
136 %token STRING
138 /* "...", used for functions with variable arglists. */
139 %token ELLIPSIS
141 /* the reserved words */
142 /* SCO include files test "ASM", so use something else. */
143 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145 %token ATTRIBUTE EXTENSION LABEL
146 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147 %token PTR_VALUE PTR_BASE PTR_EXTENT
148 %token FUNC_NAME
150 /* Add precedence rules to solve dangling else s/r conflict */
151 %nonassoc IF
152 %nonassoc ELSE
154 /* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
158 %right <code> ASSIGN '='
159 %right <code> '?' ':'
160 %left <code> OROR
161 %left <code> ANDAND
162 %left <code> '|'
163 %left <code> '^'
164 %left <code> '&'
165 %left <code> EQCOMPARE
166 %left <code> ARITHCOMPARE
167 %left <code> LSHIFT RSHIFT
168 %left <code> '+' '-'
169 %left <code> '*' '/' '%'
170 %right <code> UNARY PLUSPLUS MINUSMINUS
171 %left HYPERUNARY
172 %left <code> POINTSAT '.' '(' '['
174 /* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
178 %token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
179 %token OBJC_STRING
181 %type <code> unop
182 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
183 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
185 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
186 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
187 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
188 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
189 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
190 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
191 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
192 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
193 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
194 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
195 %type <ttype> declspecs_ts declspecs_nots
196 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
197 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
198 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
199 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
200 %type <ttype> typespec_nonreserved_nonattr
202 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
203 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
204 %type <ttype> init maybeasm
205 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
206 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
207 %type <ttype> any_word extension
209 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
210 %type <ttype> do_stmt_start poplevel stmt label
212 %type <ttype> c99_block_start c99_block_end
213 %type <ttype> declarator
214 %type <ttype> notype_declarator after_type_declarator
215 %type <ttype> parm_declarator
216 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
217 %type <ttype> array_declarator
219 %type <ttype> structsp_attr structsp_nonattr
220 %type <ttype> component_decl_list component_decl_list2
221 %type <ttype> component_decl components components_notype component_declarator
222 %type <ttype> component_notype_declarator
223 %type <ttype> enumlist enumerator
224 %type <ttype> struct_head union_head enum_head
225 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
226 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
227 %type <ttype> xexpr parms parm firstparm identifiers
229 %type <ttype> parmlist parmlist_1 parmlist_2
230 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
231 %type <ttype> identifiers_or_typenames
233 %type <itype> setspecs setspecs_fp
235 %type <location> save_location
236 \f
237 @@ifobjc
238 /* the Objective-C nonterminals */
240 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
241 %type <ttype> methoddecl unaryselector keywordselector selector
242 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
243 %type <ttype> keywordexpr keywordarglist keywordarg
244 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
245 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
246 %type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
248 %type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
250 %type <ttype> superclass
251 %type <itype> objc_try_catch_stmt objc_finally_block
252 @@end_ifobjc
253 \f
254 %{
255 /* Number of statements (loosely speaking) and compound statements
256 seen so far. */
257 static int stmt_count;
258 static int compstmt_count;
260 /* Input location of the end of the body of last simple_if;
261 used by the stmt-rule immediately after simple_if returns. */
262 static location_t if_stmt_locus;
265 /* List of types and structure classes of the current declaration. */
266 static GTY(()) tree current_declspecs;
267 static GTY(()) tree prefix_attributes;
269 /* List of all the attributes applying to the identifier currently being
270 declared; includes prefix_attributes and possibly some more attributes
271 just after a comma. */
272 static GTY(()) tree all_prefix_attributes;
274 /* Stack of saved values of current_declspecs, prefix_attributes and
275 all_prefix_attributes. */
276 static GTY(()) tree declspec_stack;
278 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
279 should be called from the productions making use of setspecs. */
280 #define PUSH_DECLSPEC_STACK \
281 do { \
282 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
283 all_prefix_attributes), \
284 current_declspecs, \
285 declspec_stack); \
286 } while (0)
288 #define POP_DECLSPEC_STACK \
289 do { \
290 current_declspecs = TREE_VALUE (declspec_stack); \
291 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
292 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
293 declspec_stack = TREE_CHAIN (declspec_stack); \
294 } while (0)
296 /* For __extension__, save/restore the warning flags which are
297 controlled by __extension__. */
298 #define SAVE_EXT_FLAGS() \
299 size_int (pedantic \
300 | (warn_pointer_arith << 1) \
301 | (warn_traditional << 2) \
302 | (flag_iso << 3))
304 #define RESTORE_EXT_FLAGS(tval) \
305 do { \
306 int val = tree_low_cst (tval, 0); \
307 pedantic = val & 1; \
308 warn_pointer_arith = (val >> 1) & 1; \
309 warn_traditional = (val >> 2) & 1; \
310 flag_iso = (val >> 3) & 1; \
311 } while (0)
313 @@ifobjc
314 /* Objective-C specific parser/lexer information */
316 static enum tree_code objc_inherit_code;
317 static int objc_pq_context = 0, objc_public_flag = 0;
319 /* The following flag is needed to contextualize ObjC lexical analysis.
320 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
321 an identifier to an ObjC class, even if a class with that name
322 exists. */
323 static int objc_need_raw_identifier;
324 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
325 @@end_ifobjc
327 @@ifc
328 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
329 @@end_ifc
331 static bool parsing_iso_function_signature;
333 /* Tell yyparse how to print a token's value, if yydebug is set. */
335 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
337 static void yyprint (FILE *, int, YYSTYPE);
338 static void yyerror (const char *);
339 static int yylexname (void);
340 static inline int _yylex (void);
341 static int yylex (void);
342 static void init_reswords (void);
344 /* Initialisation routine for this file. */
345 void
346 c_parse_init (void)
347 {
348 init_reswords ();
349 }
351 %}
352 \f
353 %%
354 program: /* empty */
355 { if (pedantic)
356 pedwarn ("ISO C forbids an empty source file");
357 }
358 | extdefs
359 ;
361 /* the reason for the strange actions in this rule
362 is so that notype_initdecls when reached via datadef
363 can find a valid list of type and sc specs in $0. */
365 extdefs:
366 {$<ttype>$ = NULL_TREE; } extdef
367 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
368 ;
370 extdef:
371 extdef_1
372 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
373 ;
375 extdef_1:
376 fndef
377 | datadef
378 @@ifobjc
379 | objcdef
380 @@end_ifobjc
381 | ASM_KEYWORD '(' expr ')' ';'
382 { STRIP_NOPS ($3);
383 if ((TREE_CODE ($3) == ADDR_EXPR
384 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
385 || TREE_CODE ($3) == STRING_CST)
386 assemble_asm ($3);
387 else
388 error ("argument of `asm' is not a constant string"); }
389 | extension extdef
390 { RESTORE_EXT_FLAGS ($1); }
391 ;
393 datadef:
394 setspecs notype_initdecls ';'
395 { if (pedantic)
396 error ("ISO C forbids data definition with no type or storage class");
397 else
398 warning ("data definition has no type or storage class");
400 POP_DECLSPEC_STACK; }
401 | declspecs_nots setspecs notype_initdecls ';'
402 { POP_DECLSPEC_STACK; }
403 | declspecs_ts setspecs initdecls ';'
404 { POP_DECLSPEC_STACK; }
405 | declspecs ';'
406 { shadow_tag ($1); }
407 | error ';'
408 | error '}'
409 | ';'
410 { if (pedantic)
411 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
412 ;
413 \f
414 fndef:
415 declspecs_ts setspecs declarator
416 { if (! start_function (current_declspecs, $3,
417 all_prefix_attributes))
418 YYERROR1;
419 }
420 old_style_parm_decls save_location
421 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
422 store_parm_decls (); }
423 compstmt_or_error
424 { finish_function ();
425 POP_DECLSPEC_STACK; }
426 | declspecs_ts setspecs declarator error
427 { POP_DECLSPEC_STACK; }
428 | declspecs_nots setspecs notype_declarator
429 { if (! start_function (current_declspecs, $3,
430 all_prefix_attributes))
431 YYERROR1;
432 }
433 old_style_parm_decls save_location
434 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
435 store_parm_decls (); }
436 compstmt_or_error
437 { finish_function ();
438 POP_DECLSPEC_STACK; }
439 | declspecs_nots setspecs notype_declarator error
440 { POP_DECLSPEC_STACK; }
441 | setspecs notype_declarator
442 { if (! start_function (NULL_TREE, $2,
443 all_prefix_attributes))
444 YYERROR1;
445 }
446 old_style_parm_decls save_location
447 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
448 store_parm_decls (); }
449 compstmt_or_error
450 { finish_function ();
451 POP_DECLSPEC_STACK; }
452 | setspecs notype_declarator error
453 { POP_DECLSPEC_STACK; }
454 ;
456 identifier:
457 IDENTIFIER
458 | TYPENAME
459 @@ifobjc
460 | OBJECTNAME
461 | CLASSNAME
462 @@end_ifobjc
463 ;
465 unop: '&'
466 { $$ = ADDR_EXPR; }
467 | '-'
468 { $$ = NEGATE_EXPR; }
469 | '+'
470 { $$ = CONVERT_EXPR;
471 @@ifc
472 if (warn_traditional && !in_system_header)
473 warning ("traditional C rejects the unary plus operator");
474 @@end_ifc
475 }
476 | PLUSPLUS
477 { $$ = PREINCREMENT_EXPR; }
478 | MINUSMINUS
479 { $$ = PREDECREMENT_EXPR; }
480 | '~'
481 { $$ = BIT_NOT_EXPR; }
482 | '!'
483 { $$ = TRUTH_NOT_EXPR; }
484 ;
486 expr: nonnull_exprlist
487 { $$ = build_compound_expr ($1); }
488 ;
490 exprlist:
491 /* empty */
492 { $$ = NULL_TREE; }
493 | nonnull_exprlist
494 ;
496 nonnull_exprlist:
497 expr_no_commas
498 { $$ = build_tree_list (NULL_TREE, $1); }
499 | nonnull_exprlist ',' expr_no_commas
500 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
501 ;
503 unary_expr:
504 primary
505 | '*' cast_expr %prec UNARY
506 { $$ = build_indirect_ref ($2, "unary *"); }
507 /* __extension__ turns off -pedantic for following primary. */
508 | extension cast_expr %prec UNARY
509 { $$ = $2;
510 RESTORE_EXT_FLAGS ($1); }
511 | unop cast_expr %prec UNARY
512 { $$ = build_unary_op ($1, $2, 0);
513 overflow_warning ($$); }
514 /* Refer to the address of a label as a pointer. */
515 | ANDAND identifier
516 { $$ = finish_label_address_expr ($2); }
517 | sizeof unary_expr %prec UNARY
518 { skip_evaluation--;
519 if (TREE_CODE ($2) == COMPONENT_REF
520 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
521 error ("`sizeof' applied to a bit-field");
522 $$ = c_sizeof (TREE_TYPE ($2)); }
523 | sizeof '(' typename ')' %prec HYPERUNARY
524 { skip_evaluation--;
525 $$ = c_sizeof (groktypename ($3)); }
526 | alignof unary_expr %prec UNARY
527 { skip_evaluation--;
528 $$ = c_alignof_expr ($2); }
529 | alignof '(' typename ')' %prec HYPERUNARY
530 { skip_evaluation--;
531 $$ = c_alignof (groktypename ($3)); }
532 | REALPART cast_expr %prec UNARY
533 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
534 | IMAGPART cast_expr %prec UNARY
535 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
536 ;
538 sizeof:
539 SIZEOF { skip_evaluation++; }
540 ;
542 alignof:
543 ALIGNOF { skip_evaluation++; }
544 ;
546 typeof:
547 TYPEOF { skip_evaluation++; }
548 ;
550 cast_expr:
551 unary_expr
552 | '(' typename ')' cast_expr %prec UNARY
553 { $$ = c_cast_expr ($2, $4); }
554 ;
556 expr_no_commas:
557 cast_expr
558 | expr_no_commas '+' expr_no_commas
559 { $$ = parser_build_binary_op ($2, $1, $3); }
560 | expr_no_commas '-' expr_no_commas
561 { $$ = parser_build_binary_op ($2, $1, $3); }
562 | expr_no_commas '*' expr_no_commas
563 { $$ = parser_build_binary_op ($2, $1, $3); }
564 | expr_no_commas '/' expr_no_commas
565 { $$ = parser_build_binary_op ($2, $1, $3); }
566 | expr_no_commas '%' expr_no_commas
567 { $$ = parser_build_binary_op ($2, $1, $3); }
568 | expr_no_commas LSHIFT expr_no_commas
569 { $$ = parser_build_binary_op ($2, $1, $3); }
570 | expr_no_commas RSHIFT expr_no_commas
571 { $$ = parser_build_binary_op ($2, $1, $3); }
572 | expr_no_commas ARITHCOMPARE expr_no_commas
573 { $$ = parser_build_binary_op ($2, $1, $3); }
574 | expr_no_commas EQCOMPARE expr_no_commas
575 { $$ = parser_build_binary_op ($2, $1, $3); }
576 | expr_no_commas '&' expr_no_commas
577 { $$ = parser_build_binary_op ($2, $1, $3); }
578 | expr_no_commas '|' expr_no_commas
579 { $$ = parser_build_binary_op ($2, $1, $3); }
580 | expr_no_commas '^' expr_no_commas
581 { $$ = parser_build_binary_op ($2, $1, $3); }
582 | expr_no_commas ANDAND
583 { $1 = c_common_truthvalue_conversion
584 (default_conversion ($1));
585 skip_evaluation += $1 == truthvalue_false_node; }
586 expr_no_commas
587 { skip_evaluation -= $1 == truthvalue_false_node;
588 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
589 | expr_no_commas OROR
590 { $1 = c_common_truthvalue_conversion
591 (default_conversion ($1));
592 skip_evaluation += $1 == truthvalue_true_node; }
593 expr_no_commas
594 { skip_evaluation -= $1 == truthvalue_true_node;
595 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
596 | expr_no_commas '?'
597 { $1 = c_common_truthvalue_conversion
598 (default_conversion ($1));
599 skip_evaluation += $1 == truthvalue_false_node; }
600 expr ':'
601 { skip_evaluation += (($1 == truthvalue_true_node)
602 - ($1 == truthvalue_false_node)); }
603 expr_no_commas
604 { skip_evaluation -= $1 == truthvalue_true_node;
605 $$ = build_conditional_expr ($1, $4, $7); }
606 | expr_no_commas '?'
607 { if (pedantic)
608 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
609 /* Make sure first operand is calculated only once. */
610 $<ttype>2 = save_expr ($1);
611 $1 = c_common_truthvalue_conversion
612 (default_conversion ($<ttype>2));
613 skip_evaluation += $1 == truthvalue_true_node; }
614 ':' expr_no_commas
615 { skip_evaluation -= $1 == truthvalue_true_node;
616 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
617 | expr_no_commas '=' expr_no_commas
618 { char class;
619 $$ = build_modify_expr ($1, NOP_EXPR, $3);
620 class = TREE_CODE_CLASS (TREE_CODE ($$));
621 if (IS_EXPR_CODE_CLASS (class))
622 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
623 }
624 | expr_no_commas ASSIGN expr_no_commas
625 { char class;
626 $$ = build_modify_expr ($1, $2, $3);
627 /* This inhibits warnings in
628 c_common_truthvalue_conversion. */
629 class = TREE_CODE_CLASS (TREE_CODE ($$));
630 if (IS_EXPR_CODE_CLASS (class))
631 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
632 }
633 ;
635 primary:
636 IDENTIFIER
637 {
638 if (yychar == YYEMPTY)
639 yychar = YYLEX;
640 $$ = build_external_ref ($1, yychar == '(');
641 }
642 | CONSTANT
643 | STRING
644 | FUNC_NAME
645 { $$ = fname_decl (C_RID_CODE ($$), $$); }
646 | '(' typename ')' '{'
647 { start_init (NULL_TREE, NULL, 0);
648 $2 = groktypename ($2);
649 really_start_incremental_init ($2); }
650 initlist_maybe_comma '}' %prec UNARY
651 { tree constructor = pop_init_level (0);
652 tree type = $2;
653 finish_init ();
655 if (pedantic && ! flag_isoc99)
656 pedwarn ("ISO C89 forbids compound literals");
657 $$ = build_compound_literal (type, constructor);
658 }
659 | '(' expr ')'
660 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
661 if (IS_EXPR_CODE_CLASS (class))
662 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
663 $$ = $2; }
664 | '(' error ')'
665 { $$ = error_mark_node; }
666 | compstmt_primary_start compstmt_nostart ')'
667 { tree saved_last_tree;
669 if (pedantic)
670 pedwarn ("ISO C forbids braced-groups within expressions");
671 saved_last_tree = COMPOUND_BODY ($1);
672 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
673 last_tree = saved_last_tree;
674 TREE_CHAIN (last_tree) = NULL_TREE;
675 if (!last_expr_type)
676 last_expr_type = void_type_node;
677 $$ = build1 (STMT_EXPR, last_expr_type, $1);
678 TREE_SIDE_EFFECTS ($$) = 1;
679 }
680 | compstmt_primary_start error ')'
681 {
682 last_tree = COMPOUND_BODY ($1);
683 TREE_CHAIN (last_tree) = NULL_TREE;
684 $$ = error_mark_node;
685 }
686 | primary '(' exprlist ')' %prec '.'
687 { $$ = build_function_call ($1, $3); }
688 | VA_ARG '(' expr_no_commas ',' typename ')'
689 { $$ = build_va_arg ($3, groktypename ($5)); }
691 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
692 {
693 tree c;
695 c = fold ($3);
696 STRIP_NOPS (c);
697 if (TREE_CODE (c) != INTEGER_CST)
698 error ("first argument to __builtin_choose_expr not a constant");
699 $$ = integer_zerop (c) ? $7 : $5;
700 }
701 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
702 {
703 tree e1, e2;
705 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
706 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
708 $$ = comptypes (e1, e2, COMPARE_STRICT)
709 ? build_int_2 (1, 0) : build_int_2 (0, 0);
710 }
711 | primary '[' expr ']' %prec '.'
712 { $$ = build_array_ref ($1, $3); }
713 | primary '.' identifier
714 {
715 @@ifobjc
716 if (!is_public ($1, $3))
717 $$ = error_mark_node;
718 else
719 @@end_ifobjc
720 $$ = build_component_ref ($1, $3);
721 }
722 | primary POINTSAT identifier
723 {
724 tree expr = build_indirect_ref ($1, "->");
726 @@ifobjc
727 if (!is_public (expr, $3))
728 $$ = error_mark_node;
729 else
730 @@end_ifobjc
731 $$ = build_component_ref (expr, $3);
732 }
733 | primary PLUSPLUS
734 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
735 | primary MINUSMINUS
736 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
737 @@ifobjc
738 | objcmessageexpr
739 { $$ = build_message_expr ($1); }
740 | objcselectorexpr
741 { $$ = build_selector_expr ($1); }
742 | objcprotocolexpr
743 { $$ = build_protocol_expr ($1); }
744 | objcencodeexpr
745 { $$ = build_encode_expr ($1); }
746 | OBJC_STRING
747 { $$ = build_objc_string_object ($1); }
748 @@end_ifobjc
749 ;
751 old_style_parm_decls:
752 old_style_parm_decls_1
753 {
754 parsing_iso_function_signature = false; /* Reset after decls. */
755 }
756 ;
758 old_style_parm_decls_1:
759 /* empty */
760 {
761 if (warn_traditional && !in_system_header
762 && parsing_iso_function_signature)
763 warning ("traditional C rejects ISO C style function definitions");
764 if (warn_old_style_definition && !in_system_header
765 && !parsing_iso_function_signature)
766 warning ("old-style parameter declaration");
767 parsing_iso_function_signature = false; /* Reset after warning. */
768 }
769 | datadecls
770 {
771 if (warn_old_style_definition && !in_system_header)
772 warning ("old-style parameter declaration");
773 }
774 ;
776 /* The following are analogous to lineno_decl, decls and decl
777 except that they do not allow nested functions.
778 They are used for old-style parm decls. */
779 lineno_datadecl:
780 save_location datadecl
781 { }
782 ;
784 datadecls:
785 lineno_datadecl
786 | errstmt
787 | datadecls lineno_datadecl
788 | lineno_datadecl errstmt
789 ;
791 /* We don't allow prefix attributes here because they cause reduce/reduce
792 conflicts: we can't know whether we're parsing a function decl with
793 attribute suffix, or function defn with attribute prefix on first old
794 style parm. */
795 datadecl:
796 declspecs_ts_nosa setspecs initdecls ';'
797 { POP_DECLSPEC_STACK; }
798 | declspecs_nots_nosa setspecs notype_initdecls ';'
799 { POP_DECLSPEC_STACK; }
800 | declspecs_ts_nosa ';'
801 { shadow_tag_warned ($1, 1);
802 pedwarn ("empty declaration"); }
803 | declspecs_nots_nosa ';'
804 { pedwarn ("empty declaration"); }
805 ;
807 /* This combination which saves a lineno before a decl
808 is the normal thing to use, rather than decl itself.
809 This is to avoid shift/reduce conflicts in contexts
810 where statement labels are allowed. */
811 lineno_decl:
812 save_location decl
813 { }
814 ;
816 /* records the type and storage class specs to use for processing
817 the declarators that follow.
818 Maintains a stack of outer-level values of current_declspecs,
819 for the sake of parm declarations nested in function declarators. */
820 setspecs: /* empty */
821 { pending_xref_error ();
822 PUSH_DECLSPEC_STACK;
823 split_specs_attrs ($<ttype>0,
824 ¤t_declspecs, &prefix_attributes);
825 all_prefix_attributes = prefix_attributes; }
826 ;
828 /* Possibly attributes after a comma, which should reset all_prefix_attributes
829 to prefix_attributes with these ones chained on the front. */
830 maybe_resetattrs:
831 maybe_attribute
832 { all_prefix_attributes = chainon ($1, prefix_attributes); }
833 ;
835 decl:
836 declspecs_ts setspecs initdecls ';'
837 { POP_DECLSPEC_STACK; }
838 | declspecs_nots setspecs notype_initdecls ';'
839 { POP_DECLSPEC_STACK; }
840 | declspecs_ts setspecs nested_function
841 { POP_DECLSPEC_STACK; }
842 | declspecs_nots setspecs notype_nested_function
843 { POP_DECLSPEC_STACK; }
844 | declspecs ';'
845 { shadow_tag ($1); }
846 | extension decl
847 { RESTORE_EXT_FLAGS ($1); }
848 ;
850 /* A list of declaration specifiers. These are:
852 - Storage class specifiers (scspec), which for GCC currently includes
853 function specifiers ("inline").
855 - Type specifiers (typespec_*).
857 - Type qualifiers (TYPE_QUAL).
859 - Attribute specifier lists (attributes).
861 These are stored as a TREE_LIST; the head of the list is the last
862 item in the specifier list. Each entry in the list has either a
863 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
864 is a single other specifier or qualifier; and a TREE_CHAIN that is the
865 rest of the list. TREE_STATIC is set on the list if something other
866 than a storage class specifier or attribute has been seen; this is used
867 to warn for the obsolescent usage of storage class specifiers other than
868 at the start of the list. (Doing this properly would require function
869 specifiers to be handled separately from storage class specifiers.)
871 The various cases below are classified according to:
873 (a) Whether a storage class specifier is included or not; some
874 places in the grammar disallow storage class specifiers (_sc or _nosc).
876 (b) Whether a type specifier has been seen; after a type specifier,
877 a typedef name is an identifier to redeclare (_ts or _nots).
879 (c) Whether the list starts with an attribute; in certain places,
880 the grammar requires specifiers that don't start with an attribute
881 (_sa or _nosa).
883 (d) Whether the list ends with an attribute (or a specifier such that
884 any following attribute would have been parsed as part of that specifier);
885 this avoids shift-reduce conflicts in the parsing of attributes
886 (_ea or _noea).
888 TODO:
890 (i) Distinguish between function specifiers and storage class specifiers,
891 at least for the purpose of warnings about obsolescent usage.
893 (ii) Halve the number of productions here by eliminating the _sc/_nosc
894 distinction and instead checking where required that storage class
895 specifiers aren't present. */
897 /* Declspecs which contain at least one type specifier or typedef name.
898 (Just `const' or `volatile' is not enough.)
899 A typedef'd name following these is taken as a name to be declared.
900 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
902 declspecs_nosc_nots_nosa_noea:
903 TYPE_QUAL
904 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
905 TREE_STATIC ($$) = 1; }
906 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
907 { $$ = tree_cons (NULL_TREE, $2, $1);
908 TREE_STATIC ($$) = 1; }
909 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
910 { $$ = tree_cons (NULL_TREE, $2, $1);
911 TREE_STATIC ($$) = 1; }
912 ;
914 declspecs_nosc_nots_nosa_ea:
915 declspecs_nosc_nots_nosa_noea attributes
916 { $$ = tree_cons ($2, NULL_TREE, $1);
917 TREE_STATIC ($$) = TREE_STATIC ($1); }
918 ;
920 declspecs_nosc_nots_sa_noea:
921 declspecs_nosc_nots_sa_noea TYPE_QUAL
922 { $$ = tree_cons (NULL_TREE, $2, $1);
923 TREE_STATIC ($$) = 1; }
924 | declspecs_nosc_nots_sa_ea TYPE_QUAL
925 { $$ = tree_cons (NULL_TREE, $2, $1);
926 TREE_STATIC ($$) = 1; }
927 ;
929 declspecs_nosc_nots_sa_ea:
930 attributes
931 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
932 TREE_STATIC ($$) = 0; }
933 | declspecs_nosc_nots_sa_noea attributes
934 { $$ = tree_cons ($2, NULL_TREE, $1);
935 TREE_STATIC ($$) = TREE_STATIC ($1); }
936 ;
938 declspecs_nosc_ts_nosa_noea:
939 typespec_nonattr
940 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
941 TREE_STATIC ($$) = 1; }
942 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
943 { $$ = tree_cons (NULL_TREE, $2, $1);
944 TREE_STATIC ($$) = 1; }
945 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
946 { $$ = tree_cons (NULL_TREE, $2, $1);
947 TREE_STATIC ($$) = 1; }
948 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
949 { $$ = tree_cons (NULL_TREE, $2, $1);
950 TREE_STATIC ($$) = 1; }
951 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
952 { $$ = tree_cons (NULL_TREE, $2, $1);
953 TREE_STATIC ($$) = 1; }
954 | declspecs_nosc_nots_nosa_noea typespec_nonattr
955 { $$ = tree_cons (NULL_TREE, $2, $1);
956 TREE_STATIC ($$) = 1; }
957 | declspecs_nosc_nots_nosa_ea typespec_nonattr
958 { $$ = tree_cons (NULL_TREE, $2, $1);
959 TREE_STATIC ($$) = 1; }
960 ;
962 declspecs_nosc_ts_nosa_ea:
963 typespec_attr
964 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
965 TREE_STATIC ($$) = 1; }
966 | declspecs_nosc_ts_nosa_noea attributes
967 { $$ = tree_cons ($2, NULL_TREE, $1);
968 TREE_STATIC ($$) = TREE_STATIC ($1); }
969 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
970 { $$ = tree_cons (NULL_TREE, $2, $1);
971 TREE_STATIC ($$) = 1; }
972 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
973 { $$ = tree_cons (NULL_TREE, $2, $1);
974 TREE_STATIC ($$) = 1; }
975 | declspecs_nosc_nots_nosa_noea typespec_attr
976 { $$ = tree_cons (NULL_TREE, $2, $1);
977 TREE_STATIC ($$) = 1; }
978 | declspecs_nosc_nots_nosa_ea typespec_attr
979 { $$ = tree_cons (NULL_TREE, $2, $1);
980 TREE_STATIC ($$) = 1; }
981 ;
983 declspecs_nosc_ts_sa_noea:
984 declspecs_nosc_ts_sa_noea TYPE_QUAL
985 { $$ = tree_cons (NULL_TREE, $2, $1);
986 TREE_STATIC ($$) = 1; }
987 | declspecs_nosc_ts_sa_ea TYPE_QUAL
988 { $$ = tree_cons (NULL_TREE, $2, $1);
989 TREE_STATIC ($$) = 1; }
990 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
991 { $$ = tree_cons (NULL_TREE, $2, $1);
992 TREE_STATIC ($$) = 1; }
993 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
994 { $$ = tree_cons (NULL_TREE, $2, $1);
995 TREE_STATIC ($$) = 1; }
996 | declspecs_nosc_nots_sa_noea typespec_nonattr
997 { $$ = tree_cons (NULL_TREE, $2, $1);
998 TREE_STATIC ($$) = 1; }
999 | declspecs_nosc_nots_sa_ea typespec_nonattr
1000 { $$ = tree_cons (NULL_TREE, $2, $1);
1001 TREE_STATIC ($$) = 1; }
1002 ;
1004 declspecs_nosc_ts_sa_ea:
1005 declspecs_nosc_ts_sa_noea attributes
1006 { $$ = tree_cons ($2, NULL_TREE, $1);
1007 TREE_STATIC ($$) = TREE_STATIC ($1); }
1008 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1009 { $$ = tree_cons (NULL_TREE, $2, $1);
1010 TREE_STATIC ($$) = 1; }
1011 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1012 { $$ = tree_cons (NULL_TREE, $2, $1);
1013 TREE_STATIC ($$) = 1; }
1014 | declspecs_nosc_nots_sa_noea typespec_attr
1015 { $$ = tree_cons (NULL_TREE, $2, $1);
1016 TREE_STATIC ($$) = 1; }
1017 | declspecs_nosc_nots_sa_ea typespec_attr
1018 { $$ = tree_cons (NULL_TREE, $2, $1);
1019 TREE_STATIC ($$) = 1; }
1020 ;
1022 declspecs_sc_nots_nosa_noea:
1023 scspec
1024 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1025 TREE_STATIC ($$) = 0; }
1026 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1027 { $$ = tree_cons (NULL_TREE, $2, $1);
1028 TREE_STATIC ($$) = 1; }
1029 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1030 { $$ = tree_cons (NULL_TREE, $2, $1);
1031 TREE_STATIC ($$) = 1; }
1032 | declspecs_nosc_nots_nosa_noea scspec
1033 { if (extra_warnings && TREE_STATIC ($1))
1034 warning ("`%s' is not at beginning of declaration",
1035 IDENTIFIER_POINTER ($2));
1036 $$ = tree_cons (NULL_TREE, $2, $1);
1037 TREE_STATIC ($$) = TREE_STATIC ($1); }
1038 | declspecs_nosc_nots_nosa_ea scspec
1039 { if (extra_warnings && TREE_STATIC ($1))
1040 warning ("`%s' is not at beginning of declaration",
1041 IDENTIFIER_POINTER ($2));
1042 $$ = tree_cons (NULL_TREE, $2, $1);
1043 TREE_STATIC ($$) = TREE_STATIC ($1); }
1044 | declspecs_sc_nots_nosa_noea scspec
1045 { if (extra_warnings && TREE_STATIC ($1))
1046 warning ("`%s' is not at beginning of declaration",
1047 IDENTIFIER_POINTER ($2));
1048 $$ = tree_cons (NULL_TREE, $2, $1);
1049 TREE_STATIC ($$) = TREE_STATIC ($1); }
1050 | declspecs_sc_nots_nosa_ea scspec
1051 { if (extra_warnings && TREE_STATIC ($1))
1052 warning ("`%s' is not at beginning of declaration",
1053 IDENTIFIER_POINTER ($2));
1054 $$ = tree_cons (NULL_TREE, $2, $1);
1055 TREE_STATIC ($$) = TREE_STATIC ($1); }
1056 ;
1058 declspecs_sc_nots_nosa_ea:
1059 declspecs_sc_nots_nosa_noea attributes
1060 { $$ = tree_cons ($2, NULL_TREE, $1);
1061 TREE_STATIC ($$) = TREE_STATIC ($1); }
1062 ;
1064 declspecs_sc_nots_sa_noea:
1065 declspecs_sc_nots_sa_noea TYPE_QUAL
1066 { $$ = tree_cons (NULL_TREE, $2, $1);
1067 TREE_STATIC ($$) = 1; }
1068 | declspecs_sc_nots_sa_ea TYPE_QUAL
1069 { $$ = tree_cons (NULL_TREE, $2, $1);
1070 TREE_STATIC ($$) = 1; }
1071 | declspecs_nosc_nots_sa_noea scspec
1072 { if (extra_warnings && TREE_STATIC ($1))
1073 warning ("`%s' is not at beginning of declaration",
1074 IDENTIFIER_POINTER ($2));
1075 $$ = tree_cons (NULL_TREE, $2, $1);
1076 TREE_STATIC ($$) = TREE_STATIC ($1); }
1077 | declspecs_nosc_nots_sa_ea scspec
1078 { if (extra_warnings && TREE_STATIC ($1))
1079 warning ("`%s' is not at beginning of declaration",
1080 IDENTIFIER_POINTER ($2));
1081 $$ = tree_cons (NULL_TREE, $2, $1);
1082 TREE_STATIC ($$) = TREE_STATIC ($1); }
1083 | declspecs_sc_nots_sa_noea scspec
1084 { if (extra_warnings && TREE_STATIC ($1))
1085 warning ("`%s' is not at beginning of declaration",
1086 IDENTIFIER_POINTER ($2));
1087 $$ = tree_cons (NULL_TREE, $2, $1);
1088 TREE_STATIC ($$) = TREE_STATIC ($1); }
1089 | declspecs_sc_nots_sa_ea scspec
1090 { if (extra_warnings && TREE_STATIC ($1))
1091 warning ("`%s' is not at beginning of declaration",
1092 IDENTIFIER_POINTER ($2));
1093 $$ = tree_cons (NULL_TREE, $2, $1);
1094 TREE_STATIC ($$) = TREE_STATIC ($1); }
1095 ;
1097 declspecs_sc_nots_sa_ea:
1098 declspecs_sc_nots_sa_noea attributes
1099 { $$ = tree_cons ($2, NULL_TREE, $1);
1100 TREE_STATIC ($$) = TREE_STATIC ($1); }
1101 ;
1103 declspecs_sc_ts_nosa_noea:
1104 declspecs_sc_ts_nosa_noea TYPE_QUAL
1105 { $$ = tree_cons (NULL_TREE, $2, $1);
1106 TREE_STATIC ($$) = 1; }
1107 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1108 { $$ = tree_cons (NULL_TREE, $2, $1);
1109 TREE_STATIC ($$) = 1; }
1110 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1111 { $$ = tree_cons (NULL_TREE, $2, $1);
1112 TREE_STATIC ($$) = 1; }
1113 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1114 { $$ = tree_cons (NULL_TREE, $2, $1);
1115 TREE_STATIC ($$) = 1; }
1116 | declspecs_sc_nots_nosa_noea typespec_nonattr
1117 { $$ = tree_cons (NULL_TREE, $2, $1);
1118 TREE_STATIC ($$) = 1; }
1119 | declspecs_sc_nots_nosa_ea typespec_nonattr
1120 { $$ = tree_cons (NULL_TREE, $2, $1);
1121 TREE_STATIC ($$) = 1; }
1122 | declspecs_nosc_ts_nosa_noea scspec
1123 { if (extra_warnings && TREE_STATIC ($1))
1124 warning ("`%s' is not at beginning of declaration",
1125 IDENTIFIER_POINTER ($2));
1126 $$ = tree_cons (NULL_TREE, $2, $1);
1127 TREE_STATIC ($$) = TREE_STATIC ($1); }
1128 | declspecs_nosc_ts_nosa_ea scspec
1129 { if (extra_warnings && TREE_STATIC ($1))
1130 warning ("`%s' is not at beginning of declaration",
1131 IDENTIFIER_POINTER ($2));
1132 $$ = tree_cons (NULL_TREE, $2, $1);
1133 TREE_STATIC ($$) = TREE_STATIC ($1); }
1134 | declspecs_sc_ts_nosa_noea scspec
1135 { if (extra_warnings && TREE_STATIC ($1))
1136 warning ("`%s' is not at beginning of declaration",
1137 IDENTIFIER_POINTER ($2));
1138 $$ = tree_cons (NULL_TREE, $2, $1);
1139 TREE_STATIC ($$) = TREE_STATIC ($1); }
1140 | declspecs_sc_ts_nosa_ea scspec
1141 { if (extra_warnings && TREE_STATIC ($1))
1142 warning ("`%s' is not at beginning of declaration",
1143 IDENTIFIER_POINTER ($2));
1144 $$ = tree_cons (NULL_TREE, $2, $1);
1145 TREE_STATIC ($$) = TREE_STATIC ($1); }
1146 ;
1148 declspecs_sc_ts_nosa_ea:
1149 declspecs_sc_ts_nosa_noea attributes
1150 { $$ = tree_cons ($2, NULL_TREE, $1);
1151 TREE_STATIC ($$) = TREE_STATIC ($1); }
1152 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1153 { $$ = tree_cons (NULL_TREE, $2, $1);
1154 TREE_STATIC ($$) = 1; }
1155 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1156 { $$ = tree_cons (NULL_TREE, $2, $1);
1157 TREE_STATIC ($$) = 1; }
1158 | declspecs_sc_nots_nosa_noea typespec_attr
1159 { $$ = tree_cons (NULL_TREE, $2, $1);
1160 TREE_STATIC ($$) = 1; }
1161 | declspecs_sc_nots_nosa_ea typespec_attr
1162 { $$ = tree_cons (NULL_TREE, $2, $1);
1163 TREE_STATIC ($$) = 1; }
1164 ;
1166 declspecs_sc_ts_sa_noea:
1167 declspecs_sc_ts_sa_noea TYPE_QUAL
1168 { $$ = tree_cons (NULL_TREE, $2, $1);
1169 TREE_STATIC ($$) = 1; }
1170 | declspecs_sc_ts_sa_ea TYPE_QUAL
1171 { $$ = tree_cons (NULL_TREE, $2, $1);
1172 TREE_STATIC ($$) = 1; }
1173 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1174 { $$ = tree_cons (NULL_TREE, $2, $1);
1175 TREE_STATIC ($$) = 1; }
1176 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1177 { $$ = tree_cons (NULL_TREE, $2, $1);
1178 TREE_STATIC ($$) = 1; }
1179 | declspecs_sc_nots_sa_noea typespec_nonattr
1180 { $$ = tree_cons (NULL_TREE, $2, $1);
1181 TREE_STATIC ($$) = 1; }
1182 | declspecs_sc_nots_sa_ea typespec_nonattr
1183 { $$ = tree_cons (NULL_TREE, $2, $1);
1184 TREE_STATIC ($$) = 1; }
1185 | declspecs_nosc_ts_sa_noea scspec
1186 { if (extra_warnings && TREE_STATIC ($1))
1187 warning ("`%s' is not at beginning of declaration",
1188 IDENTIFIER_POINTER ($2));
1189 $$ = tree_cons (NULL_TREE, $2, $1);
1190 TREE_STATIC ($$) = TREE_STATIC ($1); }
1191 | declspecs_nosc_ts_sa_ea scspec
1192 { if (extra_warnings && TREE_STATIC ($1))
1193 warning ("`%s' is not at beginning of declaration",
1194 IDENTIFIER_POINTER ($2));
1195 $$ = tree_cons (NULL_TREE, $2, $1);
1196 TREE_STATIC ($$) = TREE_STATIC ($1); }
1197 | declspecs_sc_ts_sa_noea scspec
1198 { if (extra_warnings && TREE_STATIC ($1))
1199 warning ("`%s' is not at beginning of declaration",
1200 IDENTIFIER_POINTER ($2));
1201 $$ = tree_cons (NULL_TREE, $2, $1);
1202 TREE_STATIC ($$) = TREE_STATIC ($1); }
1203 | declspecs_sc_ts_sa_ea scspec
1204 { if (extra_warnings && TREE_STATIC ($1))
1205 warning ("`%s' is not at beginning of declaration",
1206 IDENTIFIER_POINTER ($2));
1207 $$ = tree_cons (NULL_TREE, $2, $1);
1208 TREE_STATIC ($$) = TREE_STATIC ($1); }
1209 ;
1211 declspecs_sc_ts_sa_ea:
1212 declspecs_sc_ts_sa_noea attributes
1213 { $$ = tree_cons ($2, NULL_TREE, $1);
1214 TREE_STATIC ($$) = TREE_STATIC ($1); }
1215 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1216 { $$ = tree_cons (NULL_TREE, $2, $1);
1217 TREE_STATIC ($$) = 1; }
1218 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1219 { $$ = tree_cons (NULL_TREE, $2, $1);
1220 TREE_STATIC ($$) = 1; }
1221 | declspecs_sc_nots_sa_noea typespec_attr
1222 { $$ = tree_cons (NULL_TREE, $2, $1);
1223 TREE_STATIC ($$) = 1; }
1224 | declspecs_sc_nots_sa_ea typespec_attr
1225 { $$ = tree_cons (NULL_TREE, $2, $1);
1226 TREE_STATIC ($$) = 1; }
1227 ;
1229 /* Particular useful classes of declspecs. */
1230 declspecs_ts:
1231 declspecs_nosc_ts_nosa_noea
1232 | declspecs_nosc_ts_nosa_ea
1233 | declspecs_nosc_ts_sa_noea
1234 | declspecs_nosc_ts_sa_ea
1235 | declspecs_sc_ts_nosa_noea
1236 | declspecs_sc_ts_nosa_ea
1237 | declspecs_sc_ts_sa_noea
1238 | declspecs_sc_ts_sa_ea
1239 ;
1241 declspecs_nots:
1242 declspecs_nosc_nots_nosa_noea
1243 | declspecs_nosc_nots_nosa_ea
1244 | declspecs_nosc_nots_sa_noea
1245 | declspecs_nosc_nots_sa_ea
1246 | declspecs_sc_nots_nosa_noea
1247 | declspecs_sc_nots_nosa_ea
1248 | declspecs_sc_nots_sa_noea
1249 | declspecs_sc_nots_sa_ea
1250 ;
1252 declspecs_ts_nosa:
1253 declspecs_nosc_ts_nosa_noea
1254 | declspecs_nosc_ts_nosa_ea
1255 | declspecs_sc_ts_nosa_noea
1256 | declspecs_sc_ts_nosa_ea
1257 ;
1259 declspecs_nots_nosa:
1260 declspecs_nosc_nots_nosa_noea
1261 | declspecs_nosc_nots_nosa_ea
1262 | declspecs_sc_nots_nosa_noea
1263 | declspecs_sc_nots_nosa_ea
1264 ;
1266 declspecs_nosc_ts:
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 ;
1273 declspecs_nosc_nots:
1274 declspecs_nosc_nots_nosa_noea
1275 | declspecs_nosc_nots_nosa_ea
1276 | declspecs_nosc_nots_sa_noea
1277 | declspecs_nosc_nots_sa_ea
1278 ;
1280 declspecs_nosc:
1281 declspecs_nosc_ts_nosa_noea
1282 | declspecs_nosc_ts_nosa_ea
1283 | declspecs_nosc_ts_sa_noea
1284 | declspecs_nosc_ts_sa_ea
1285 | declspecs_nosc_nots_nosa_noea
1286 | declspecs_nosc_nots_nosa_ea
1287 | declspecs_nosc_nots_sa_noea
1288 | declspecs_nosc_nots_sa_ea
1289 ;
1291 declspecs:
1292 declspecs_nosc_nots_nosa_noea
1293 | declspecs_nosc_nots_nosa_ea
1294 | declspecs_nosc_nots_sa_noea
1295 | declspecs_nosc_nots_sa_ea
1296 | declspecs_nosc_ts_nosa_noea
1297 | declspecs_nosc_ts_nosa_ea
1298 | declspecs_nosc_ts_sa_noea
1299 | declspecs_nosc_ts_sa_ea
1300 | declspecs_sc_nots_nosa_noea
1301 | declspecs_sc_nots_nosa_ea
1302 | declspecs_sc_nots_sa_noea
1303 | declspecs_sc_nots_sa_ea
1304 | declspecs_sc_ts_nosa_noea
1305 | declspecs_sc_ts_nosa_ea
1306 | declspecs_sc_ts_sa_noea
1307 | declspecs_sc_ts_sa_ea
1308 ;
1310 /* A (possibly empty) sequence of type qualifiers and attributes. */
1311 maybe_type_quals_attrs:
1312 /* empty */
1313 { $$ = NULL_TREE; }
1314 | declspecs_nosc_nots
1315 { $$ = $1; }
1316 ;
1318 /* A type specifier (but not a type qualifier).
1319 Once we have seen one of these in a declaration,
1320 if a typedef name appears then it is being redeclared.
1322 The _reserved versions start with a reserved word and may appear anywhere
1323 in the declaration specifiers; the _nonreserved versions may only
1324 appear before any other type specifiers, and after that are (if names)
1325 being redeclared.
1327 FIXME: should the _nonreserved version be restricted to names being
1328 redeclared only? The other entries there relate only the GNU extensions
1329 and Objective C, and are historically parsed thus, and don't make sense
1330 after other type specifiers, but it might be cleaner to count them as
1331 _reserved.
1333 _attr means: specifiers that either end with attributes,
1334 or are such that any following attributes would
1335 be parsed as part of the specifier.
1337 _nonattr: specifiers. */
1339 typespec_nonattr:
1340 typespec_reserved_nonattr
1341 | typespec_nonreserved_nonattr
1342 ;
1344 typespec_attr:
1345 typespec_reserved_attr
1346 ;
1348 typespec_reserved_nonattr:
1349 TYPESPEC
1350 { OBJC_NEED_RAW_IDENTIFIER (1); }
1351 | structsp_nonattr
1352 ;
1354 typespec_reserved_attr:
1355 structsp_attr
1356 ;
1358 typespec_nonreserved_nonattr:
1359 TYPENAME
1360 { /* For a typedef name, record the meaning, not the name.
1361 In case of `foo foo, bar;'. */
1362 $$ = lookup_name ($1); }
1363 @@ifobjc
1364 | CLASSNAME protocolrefs
1365 { $$ = get_static_reference ($1, $2); }
1366 | OBJECTNAME protocolrefs
1367 { $$ = get_object_reference ($2); }
1369 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1370 - nisse@lysator.liu.se */
1371 | non_empty_protocolrefs
1372 { $$ = get_object_reference ($1); }
1373 @@end_ifobjc
1374 | typeof '(' expr ')'
1375 { skip_evaluation--; $$ = TREE_TYPE ($3); }
1376 | typeof '(' typename ')'
1377 { skip_evaluation--; $$ = groktypename ($3); }
1378 ;
1380 /* typespec_nonreserved_attr does not exist. */
1382 initdecls:
1383 initdcl
1384 | initdecls ',' maybe_resetattrs initdcl
1385 ;
1387 notype_initdecls:
1388 notype_initdcl
1389 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1390 ;
1392 maybeasm:
1393 /* empty */
1394 { $$ = NULL_TREE; }
1395 | ASM_KEYWORD '(' STRING ')'
1396 { $$ = $3; }
1397 ;
1399 initdcl:
1400 declarator maybeasm maybe_attribute '='
1401 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1402 chainon ($3, all_prefix_attributes));
1403 start_init ($<ttype>$, $2, global_bindings_p ()); }
1404 init
1405 /* Note how the declaration of the variable is in effect while its init is parsed! */
1406 { finish_init ();
1407 finish_decl ($<ttype>5, $6, $2); }
1408 | declarator maybeasm maybe_attribute
1409 { tree d = start_decl ($1, current_declspecs, 0,
1410 chainon ($3, all_prefix_attributes));
1411 finish_decl (d, NULL_TREE, $2);
1412 }
1413 ;
1415 notype_initdcl:
1416 notype_declarator maybeasm maybe_attribute '='
1417 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1418 chainon ($3, all_prefix_attributes));
1419 start_init ($<ttype>$, $2, global_bindings_p ()); }
1420 init
1421 /* Note how the declaration of the variable is in effect while its init is parsed! */
1422 { finish_init ();
1423 finish_decl ($<ttype>5, $6, $2); }
1424 | notype_declarator maybeasm maybe_attribute
1425 { tree d = start_decl ($1, current_declspecs, 0,
1426 chainon ($3, all_prefix_attributes));
1427 finish_decl (d, NULL_TREE, $2); }
1428 ;
1429 /* the * rules are dummies to accept the Apollo extended syntax
1430 so that the header files compile. */
1431 maybe_attribute:
1432 /* empty */
1433 { $$ = NULL_TREE; }
1434 | attributes
1435 { $$ = $1; }
1436 ;
1438 attributes:
1439 attribute
1440 { $$ = $1; }
1441 | attributes attribute
1442 { $$ = chainon ($1, $2); }
1443 ;
1445 attribute:
1446 ATTRIBUTE '(' '(' attribute_list ')' ')'
1447 { $$ = $4; }
1448 ;
1450 attribute_list:
1451 attrib
1452 { $$ = $1; }
1453 | attribute_list ',' attrib
1454 { $$ = chainon ($1, $3); }
1455 ;
1457 attrib:
1458 /* empty */
1459 { $$ = NULL_TREE; }
1460 | any_word
1461 { $$ = build_tree_list ($1, NULL_TREE); }
1462 | any_word '(' IDENTIFIER ')'
1463 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1464 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1465 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1466 | any_word '(' exprlist ')'
1467 { $$ = build_tree_list ($1, $3); }
1468 ;
1470 /* This still leaves out most reserved keywords,
1471 shouldn't we include them? */
1473 any_word:
1474 identifier
1475 | scspec
1476 | TYPESPEC
1477 | TYPE_QUAL
1478 ;
1480 scspec:
1481 STATIC
1482 | SCSPEC
1483 ;
1484 \f
1485 /* Initializers. `init' is the entry point. */
1487 init:
1488 expr_no_commas
1489 | '{'
1490 { really_start_incremental_init (NULL_TREE); }
1491 initlist_maybe_comma '}'
1492 { $$ = pop_init_level (0); }
1493 | error
1494 { $$ = error_mark_node; }
1495 ;
1497 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1498 initlist_maybe_comma:
1499 /* empty */
1500 { if (pedantic)
1501 pedwarn ("ISO C forbids empty initializer braces"); }
1502 | initlist1 maybecomma
1503 ;
1505 initlist1:
1506 initelt
1507 | initlist1 ',' initelt
1508 ;
1510 /* `initelt' is a single element of an initializer.
1511 It may use braces. */
1512 initelt:
1513 designator_list '=' initval
1514 { if (pedantic && ! flag_isoc99)
1515 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1516 | designator initval
1517 { if (pedantic)
1518 pedwarn ("obsolete use of designated initializer without `='"); }
1519 | identifier ':'
1520 { set_init_label ($1);
1521 if (pedantic)
1522 pedwarn ("obsolete use of designated initializer with `:'"); }
1523 initval
1524 {}
1525 | initval
1526 ;
1528 initval:
1529 '{'
1530 { push_init_level (0); }
1531 initlist_maybe_comma '}'
1532 { process_init_element (pop_init_level (0)); }
1533 | expr_no_commas
1534 { process_init_element ($1); }
1535 | error
1536 ;
1538 designator_list:
1539 designator
1540 | designator_list designator
1541 ;
1543 designator:
1544 '.' identifier
1545 { set_init_label ($2); }
1546 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1547 { set_init_index ($2, $4);
1548 if (pedantic)
1549 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1550 | '[' expr_no_commas ']'
1551 { set_init_index ($2, NULL_TREE); }
1552 ;
1553 \f
1554 nested_function:
1555 declarator
1556 { if (pedantic)
1557 pedwarn ("ISO C forbids nested functions");
1559 push_function_context ();
1560 if (! start_function (current_declspecs, $1,
1561 all_prefix_attributes))
1562 {
1563 pop_function_context ();
1564 YYERROR1;
1565 }
1566 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1567 }
1568 old_style_parm_decls save_location
1569 { tree decl = current_function_decl;
1570 DECL_SOURCE_LOCATION (decl) = $4;
1571 store_parm_decls (); }
1572 /* This used to use compstmt_or_error.
1573 That caused a bug with input `f(g) int g {}',
1574 where the use of YYERROR1 above caused an error
1575 which then was handled by compstmt_or_error.
1576 There followed a repeated execution of that same rule,
1577 which called YYERROR1 again, and so on. */
1578 compstmt
1579 { tree decl = current_function_decl;
1580 finish_function ();
1581 pop_function_context ();
1582 add_decl_stmt (decl); }
1583 ;
1585 notype_nested_function:
1586 notype_declarator
1587 { if (pedantic)
1588 pedwarn ("ISO C forbids nested functions");
1590 push_function_context ();
1591 if (! start_function (current_declspecs, $1,
1592 all_prefix_attributes))
1593 {
1594 pop_function_context ();
1595 YYERROR1;
1596 }
1597 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1598 }
1599 old_style_parm_decls save_location
1600 { tree decl = current_function_decl;
1601 DECL_SOURCE_LOCATION (decl) = $4;
1602 store_parm_decls (); }
1603 /* This used to use compstmt_or_error.
1604 That caused a bug with input `f(g) int g {}',
1605 where the use of YYERROR1 above caused an error
1606 which then was handled by compstmt_or_error.
1607 There followed a repeated execution of that same rule,
1608 which called YYERROR1 again, and so on. */
1609 compstmt
1610 { tree decl = current_function_decl;
1611 finish_function ();
1612 pop_function_context ();
1613 add_decl_stmt (decl); }
1614 ;
1616 /* Any kind of declarator (thus, all declarators allowed
1617 after an explicit typespec). */
1619 declarator:
1620 after_type_declarator
1621 | notype_declarator
1622 ;
1624 /* A declarator that is allowed only after an explicit typespec. */
1626 after_type_declarator:
1627 '(' maybe_attribute after_type_declarator ')'
1628 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1629 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1630 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1631 /* | after_type_declarator '(' error ')' %prec '.'
1632 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1633 poplevel (0, 0, 0); } */
1634 | after_type_declarator array_declarator %prec '.'
1635 { $$ = set_array_declarator_type ($2, $1, 0); }
1636 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1637 { $$ = make_pointer_declarator ($2, $3); }
1638 | TYPENAME
1639 @@ifobjc
1640 | OBJECTNAME
1641 @@end_ifobjc
1642 ;
1644 /* Kinds of declarator that can appear in a parameter list
1645 in addition to notype_declarator. This is like after_type_declarator
1646 but does not allow a typedef name in parentheses as an identifier
1647 (because it would conflict with a function with that typedef as arg). */
1648 parm_declarator:
1649 parm_declarator_starttypename
1650 | parm_declarator_nostarttypename
1651 ;
1653 parm_declarator_starttypename:
1654 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1655 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1656 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1657 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1658 poplevel (0, 0, 0); } */
1659 | parm_declarator_starttypename array_declarator %prec '.'
1660 { $$ = set_array_declarator_type ($2, $1, 0); }
1661 | TYPENAME
1662 @@ifobjc
1663 | OBJECTNAME
1664 @@end_ifobjc
1665 ;
1667 parm_declarator_nostarttypename:
1668 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1669 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1670 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1671 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1672 poplevel (0, 0, 0); } */
1673 | parm_declarator_nostarttypename array_declarator %prec '.'
1674 { $$ = set_array_declarator_type ($2, $1, 0); }
1675 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1676 { $$ = make_pointer_declarator ($2, $3); }
1677 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1678 { $$ = make_pointer_declarator ($2, $3); }
1679 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1680 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1681 ;
1683 /* A declarator allowed whether or not there has been
1684 an explicit typespec. These cannot redeclare a typedef-name. */
1686 notype_declarator:
1687 notype_declarator '(' parmlist_or_identifiers %prec '.'
1688 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1689 /* | notype_declarator '(' error ')' %prec '.'
1690 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1691 poplevel (0, 0, 0); } */
1692 | '(' maybe_attribute notype_declarator ')'
1693 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1694 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1695 { $$ = make_pointer_declarator ($2, $3); }
1696 | notype_declarator array_declarator %prec '.'
1697 { $$ = set_array_declarator_type ($2, $1, 0); }
1698 | IDENTIFIER
1699 ;
1701 struct_head:
1702 STRUCT
1703 { $$ = NULL_TREE; }
1704 | STRUCT attributes
1705 { $$ = $2; }
1706 ;
1708 union_head:
1709 UNION
1710 { $$ = NULL_TREE; }
1711 | UNION attributes
1712 { $$ = $2; }
1713 ;
1715 enum_head:
1716 ENUM
1717 { $$ = NULL_TREE; }
1718 | ENUM attributes
1719 { $$ = $2; }
1720 ;
1722 /* structsp_attr: struct/union/enum specifiers that either
1723 end with attributes, or are such that any following attributes would
1724 be parsed as part of the struct/union/enum specifier.
1726 structsp_nonattr: other struct/union/enum specifiers. */
1728 structsp_attr:
1729 struct_head identifier '{'
1730 { $$ = start_struct (RECORD_TYPE, $2);
1731 /* Start scope of tag before parsing components. */
1732 }
1733 component_decl_list '}' maybe_attribute
1734 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1735 chainon ($1, $7)); }
1736 | struct_head '{' component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1738 nreverse ($3), chainon ($1, $5));
1739 }
1740 | union_head identifier '{'
1741 { $$ = start_struct (UNION_TYPE, $2); }
1742 component_decl_list '}' maybe_attribute
1743 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1744 chainon ($1, $7)); }
1745 | union_head '{' component_decl_list '}' maybe_attribute
1746 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1747 nreverse ($3), chainon ($1, $5));
1748 }
1749 | enum_head identifier '{'
1750 { $$ = start_enum ($2); }
1751 enumlist maybecomma_warn '}' maybe_attribute
1752 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1753 chainon ($1, $8)); }
1754 | enum_head '{'
1755 { $$ = start_enum (NULL_TREE); }
1756 enumlist maybecomma_warn '}' maybe_attribute
1757 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1758 chainon ($1, $7)); }
1759 ;
1761 structsp_nonattr:
1762 struct_head identifier
1763 { $$ = xref_tag (RECORD_TYPE, $2); }
1764 | union_head identifier
1765 { $$ = xref_tag (UNION_TYPE, $2); }
1766 | enum_head identifier
1767 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1768 /* In ISO C, enumerated types can be referred to
1769 only if already defined. */
1770 if (pedantic && !COMPLETE_TYPE_P ($$))
1771 pedwarn ("ISO C forbids forward references to `enum' types"); }
1772 ;
1774 maybecomma:
1775 /* empty */
1776 | ','
1777 ;
1779 maybecomma_warn:
1780 /* empty */
1781 | ','
1782 { if (pedantic && ! flag_isoc99)
1783 pedwarn ("comma at end of enumerator list"); }
1784 ;
1786 /* We chain the components in reverse order. They are put in forward
1787 order in structsp_attr.
1789 Note that component_declarator returns single decls, so components
1790 and components_notype can use TREE_CHAIN directly, wheras components
1791 and components_notype return lists (of comma separated decls), so
1792 component_decl_list and component_decl_list2 must use chainon.
1794 The theory behind all this is that there will be more semicolon
1795 separated fields than comma separated fields, and so we'll be
1796 minimizing the number of node traversals required by chainon. */
1798 component_decl_list:
1799 component_decl_list2
1800 { $$ = $1; }
1801 | component_decl_list2 component_decl
1802 { $$ = chainon ($2, $1);
1803 pedwarn ("no semicolon at end of struct or union"); }
1804 ;
1806 component_decl_list2: /* empty */
1807 { $$ = NULL_TREE; }
1808 | component_decl_list2 component_decl ';'
1809 { $$ = chainon ($2, $1); }
1810 | component_decl_list2 ';'
1811 { if (pedantic)
1812 pedwarn ("extra semicolon in struct or union specified"); }
1813 @@ifobjc
1814 /* foo(sizeof(struct{ @defs(ClassName)})); */
1815 | DEFS '(' CLASSNAME ')'
1816 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1817 @@end_ifobjc
1818 ;
1820 component_decl:
1821 declspecs_nosc_ts setspecs components
1822 { $$ = $3;
1823 POP_DECLSPEC_STACK; }
1824 | declspecs_nosc_ts setspecs
1825 {
1826 /* Support for unnamed structs or unions as members of
1827 structs or unions (which is [a] useful and [b] supports
1828 MS P-SDK). */
1829 if (pedantic)
1830 pedwarn ("ISO C doesn't support unnamed structs/unions");
1832 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1833 POP_DECLSPEC_STACK; }
1834 | declspecs_nosc_nots setspecs components_notype
1835 { $$ = $3;
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots
1838 { if (pedantic)
1839 pedwarn ("ISO C forbids member declarations with no members");
1840 shadow_tag_warned ($1, pedantic);
1841 $$ = NULL_TREE; }
1842 | error
1843 { $$ = NULL_TREE; }
1844 | extension component_decl
1845 { $$ = $2;
1846 RESTORE_EXT_FLAGS ($1); }
1847 ;
1849 components:
1850 component_declarator
1851 | components ',' maybe_resetattrs component_declarator
1852 { TREE_CHAIN ($4) = $1; $$ = $4; }
1853 ;
1855 components_notype:
1856 component_notype_declarator
1857 | components_notype ',' maybe_resetattrs component_notype_declarator
1858 { TREE_CHAIN ($4) = $1; $$ = $4; }
1859 ;
1861 component_declarator:
1862 declarator maybe_attribute
1863 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1864 decl_attributes (&$$,
1865 chainon ($2, all_prefix_attributes), 0); }
1866 | declarator ':' expr_no_commas maybe_attribute
1867 { $$ = grokfield ($1, current_declspecs, $3);
1868 decl_attributes (&$$,
1869 chainon ($4, all_prefix_attributes), 0); }
1870 | ':' expr_no_commas maybe_attribute
1871 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1872 decl_attributes (&$$,
1873 chainon ($3, all_prefix_attributes), 0); }
1874 ;
1876 component_notype_declarator:
1877 notype_declarator maybe_attribute
1878 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1879 decl_attributes (&$$,
1880 chainon ($2, all_prefix_attributes), 0); }
1881 | notype_declarator ':' expr_no_commas maybe_attribute
1882 { $$ = grokfield ($1, current_declspecs, $3);
1883 decl_attributes (&$$,
1884 chainon ($4, all_prefix_attributes), 0); }
1885 | ':' expr_no_commas maybe_attribute
1886 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1887 decl_attributes (&$$,
1888 chainon ($3, all_prefix_attributes), 0); }
1889 ;
1891 /* We chain the enumerators in reverse order.
1892 They are put in forward order in structsp_attr. */
1894 enumlist:
1895 enumerator
1896 | enumlist ',' enumerator
1897 { if ($1 == error_mark_node)
1898 $$ = $1;
1899 else
1900 TREE_CHAIN ($3) = $1, $$ = $3; }
1901 | error
1902 { $$ = error_mark_node; }
1903 ;
1906 enumerator:
1907 identifier
1908 { $$ = build_enumerator ($1, NULL_TREE); }
1909 | identifier '=' expr_no_commas
1910 { $$ = build_enumerator ($1, $3); }
1911 ;
1913 typename:
1914 declspecs_nosc
1915 { pending_xref_error ();
1916 $<ttype>$ = $1; }
1917 absdcl
1918 { $$ = build_tree_list ($<ttype>2, $3); }
1919 ;
1921 absdcl: /* an absolute declarator */
1922 /* empty */
1923 { $$ = NULL_TREE; }
1924 | absdcl1
1925 ;
1927 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1928 /* empty */
1929 { $$ = build_tree_list (build_tree_list (current_declspecs,
1930 NULL_TREE),
1931 all_prefix_attributes); }
1932 | absdcl1
1933 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 $1),
1935 all_prefix_attributes); }
1936 | absdcl1_noea attributes
1937 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 $1),
1939 chainon ($2, all_prefix_attributes)); }
1940 ;
1942 absdcl1: /* a nonempty absolute declarator */
1943 absdcl1_ea
1944 | absdcl1_noea
1945 ;
1947 absdcl1_noea:
1948 direct_absdcl1
1949 | '*' maybe_type_quals_attrs absdcl1_noea
1950 { $$ = make_pointer_declarator ($2, $3); }
1951 ;
1953 absdcl1_ea:
1954 '*' maybe_type_quals_attrs
1955 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1956 | '*' maybe_type_quals_attrs absdcl1_ea
1957 { $$ = make_pointer_declarator ($2, $3); }
1958 ;
1960 direct_absdcl1:
1961 '(' maybe_attribute absdcl1 ')'
1962 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1963 | direct_absdcl1 '(' parmlist
1964 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1965 | direct_absdcl1 array_declarator
1966 { $$ = set_array_declarator_type ($2, $1, 1); }
1967 | '(' parmlist
1968 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1969 | array_declarator
1970 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1971 ;
1973 /* The [...] part of a declarator for an array type. */
1975 array_declarator:
1976 '[' maybe_type_quals_attrs expr_no_commas ']'
1977 { $$ = build_array_declarator ($3, $2, 0, 0); }
1978 | '[' maybe_type_quals_attrs ']'
1979 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1980 | '[' maybe_type_quals_attrs '*' ']'
1981 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1982 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1983 { $$ = build_array_declarator ($4, $3, 1, 0); }
1984 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1985 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1986 { $$ = build_array_declarator ($4, $2, 1, 0); }
1987 ;
1989 /* A nonempty series of declarations and statements (possibly followed by
1990 some labels) that can form the body of a compound statement.
1991 NOTE: we don't allow labels on declarations; this might seem like a
1992 natural extension, but there would be a conflict between attributes
1993 on the label and prefix attributes on the declaration. */
1995 stmts_and_decls:
1996 lineno_stmt_decl_or_labels_ending_stmt
1997 | lineno_stmt_decl_or_labels_ending_decl
1998 | lineno_stmt_decl_or_labels_ending_label
1999 {
2000 pedwarn ("deprecated use of label at end of compound statement");
2001 }
2002 | lineno_stmt_decl_or_labels_ending_error
2003 ;
2005 lineno_stmt_decl_or_labels_ending_stmt:
2006 lineno_stmt
2007 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2008 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2009 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2010 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2011 ;
2013 lineno_stmt_decl_or_labels_ending_decl:
2014 lineno_decl
2015 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2016 {
2017 if ((pedantic && !flag_isoc99)
2018 || warn_declaration_after_statement)
2019 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2020 }
2021 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2022 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2023 ;
2025 lineno_stmt_decl_or_labels_ending_label:
2026 lineno_label
2027 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2028 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2029 | lineno_stmt_decl_or_labels_ending_label lineno_label
2030 | lineno_stmt_decl_or_labels_ending_error lineno_label
2031 ;
2033 lineno_stmt_decl_or_labels_ending_error:
2034 errstmt
2035 | lineno_stmt_decl_or_labels errstmt
2036 ;
2038 lineno_stmt_decl_or_labels:
2039 lineno_stmt_decl_or_labels_ending_stmt
2040 | lineno_stmt_decl_or_labels_ending_decl
2041 | lineno_stmt_decl_or_labels_ending_label
2042 | lineno_stmt_decl_or_labels_ending_error
2043 ;
2045 errstmt: error ';'
2046 ;
2048 pushlevel: /* empty */
2049 { pushlevel (0);
2050 clear_last_expr ();
2051 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2052 }
2053 ;
2055 poplevel: /* empty */
2056 {
2057 @@ifobjc
2058 if (c_dialect_objc ())
2059 objc_clear_super_receiver ();
2060 @@end_ifobjc
2061 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2062 }
2063 ;
2065 /* Start and end blocks created for the new scopes of C99. */
2066 c99_block_start: /* empty */
2067 { if (flag_isoc99)
2068 {
2069 $$ = c_begin_compound_stmt ();
2070 pushlevel (0);
2071 clear_last_expr ();
2072 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2073 }
2074 else
2075 $$ = NULL_TREE;
2076 }
2077 ;
2079 /* Productions using c99_block_start and c99_block_end will need to do what's
2080 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2081 $1 is the value of c99_block_start and $2 of c99_block_end. */
2082 c99_block_end: /* empty */
2083 { if (flag_isoc99)
2084 {
2085 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2086 $$ = poplevel (KEEP_MAYBE, 0, 0);
2087 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2088 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2089 = $$;
2090 }
2091 else
2092 $$ = NULL_TREE; }
2093 ;
2095 /* Read zero or more forward-declarations for labels
2096 that nested functions can jump to. */
2097 maybe_label_decls:
2098 /* empty */
2099 | label_decls
2100 { if (pedantic)
2101 pedwarn ("ISO C forbids label declarations"); }
2102 ;
2104 label_decls:
2105 label_decl
2106 | label_decls label_decl
2107 ;
2109 label_decl:
2110 LABEL identifiers_or_typenames ';'
2111 { tree link;
2112 for (link = $2; link; link = TREE_CHAIN (link))
2113 {
2114 tree label = declare_label (TREE_VALUE (link));
2115 C_DECLARED_LABEL_FLAG (label) = 1;
2116 add_decl_stmt (label);
2117 }
2118 }
2119 ;
2121 /* This is the body of a function definition.
2122 It causes syntax errors to ignore to the next openbrace. */
2123 compstmt_or_error:
2124 compstmt
2125 {}
2126 | error compstmt
2127 ;
2129 compstmt_start: '{' { compstmt_count++;
2130 $$ = c_begin_compound_stmt (); }
2131 ;
2133 compstmt_nostart: '}'
2134 { $$ = convert (void_type_node, integer_zero_node); }
2135 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2136 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2137 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2138 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2139 = $$; }
2140 ;
2142 compstmt_contents_nonempty:
2143 stmts_and_decls
2144 | error
2145 ;
2147 compstmt_primary_start:
2148 '(' '{'
2149 { if (current_function_decl == 0)
2150 {
2151 error ("braced-group within expression allowed only inside a function");
2152 YYERROR;
2153 }
2154 /* We must force a BLOCK for this level
2155 so that, if it is not expanded later,
2156 there is a way to turn off the entire subtree of blocks
2157 that are contained in it. */
2158 keep_next_level ();
2159 compstmt_count++;
2160 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2161 }
2162 ;
2164 compstmt: compstmt_start compstmt_nostart
2165 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2166 last_expr_type = NULL_TREE;
2167 $$ = $1; }
2168 ;
2170 /* Value is number of statements counted as of the closeparen. */
2171 simple_if:
2172 if_prefix c99_block_lineno_labeled_stmt
2173 { c_finish_then (); }
2174 /* Make sure c_expand_end_cond is run once
2175 for each call to c_expand_start_cond.
2176 Otherwise a crash is likely. */
2177 | if_prefix error
2178 ;
2180 if_prefix:
2181 /* We must build the IF_STMT node before parsing its
2182 condition so that STMT_LINENO refers to the line
2183 containing the "if", and not the line containing
2184 the close-parenthesis.
2186 c_begin_if_stmt returns the IF_STMT node, which
2187 we later pass to c_expand_start_cond to fill
2188 in the condition and other tidbits. */
2189 IF
2190 { $<ttype>$ = c_begin_if_stmt (); }
2191 '(' expr ')'
2192 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2193 compstmt_count,$<ttype>2);
2194 $<itype>$ = stmt_count;
2195 if_stmt_locus = $<location>-1; }
2196 ;
2198 /* This is a subroutine of stmt.
2199 It is used twice, once for valid DO statements
2200 and once for catching errors in parsing the end test. */
2201 do_stmt_start:
2202 DO
2203 { stmt_count++;
2204 compstmt_count++;
2205 $<ttype>$
2206 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2207 NULL_TREE));
2208 /* In the event that a parse error prevents
2209 parsing the complete do-statement, set the
2210 condition now. Otherwise, we can get crashes at
2211 RTL-generation time. */
2212 DO_COND ($<ttype>$) = error_mark_node; }
2213 c99_block_lineno_labeled_stmt WHILE
2214 { $$ = $<ttype>2;
2215 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2216 ;
2218 /* The forced readahead in here is because we might be at the end of a
2219 line, and the line and file won't be bumped until yylex absorbs the
2220 first token on the next line. */
2222 save_location:
2223 { if (yychar == YYEMPTY)
2224 yychar = YYLEX;
2225 $$ = input_location; }
2226 ;
2228 lineno_labeled_stmt:
2229 lineno_stmt
2230 | lineno_label lineno_labeled_stmt
2231 ;
2233 /* Like lineno_labeled_stmt, but a block in C99. */
2234 c99_block_lineno_labeled_stmt:
2235 c99_block_start lineno_labeled_stmt c99_block_end
2236 { if (flag_isoc99)
2237 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2238 ;
2240 lineno_stmt:
2241 save_location stmt
2242 { if ($2)
2243 {
2244 STMT_LINENO ($2) = $1.line;
2245 /* ??? We currently have no way of recording
2246 the filename for a statement. This probably
2247 matters little in practice at the moment,
2248 but I suspect that problems will occur when
2249 doing inlining at the tree level. */
2250 }
2251 }
2252 ;
2254 lineno_label:
2255 save_location label
2256 { if ($2)
2257 {
2258 STMT_LINENO ($2) = $1.line;
2259 }
2260 }
2261 ;
2263 select_or_iter_stmt:
2264 simple_if ELSE
2265 { c_expand_start_else ();
2266 $<itype>1 = stmt_count; }
2267 c99_block_lineno_labeled_stmt
2268 { c_finish_else ();
2269 c_expand_end_cond ();
2270 if (extra_warnings && stmt_count == $<itype>1)
2271 warning ("empty body in an else-statement"); }
2272 | simple_if %prec IF
2273 { c_expand_end_cond ();
2274 /* This warning is here instead of in simple_if, because we
2275 do not want a warning if an empty if is followed by an
2276 else statement. Increment stmt_count so we don't
2277 give a second error if this is a nested `if'. */
2278 if (extra_warnings && stmt_count++ == $<itype>1)
2279 warning ("%Hempty body in an if-statement",
2280 &if_stmt_locus); }
2281 /* Make sure c_expand_end_cond is run once
2282 for each call to c_expand_start_cond.
2283 Otherwise a crash is likely. */
2284 | simple_if ELSE error
2285 { c_expand_end_cond (); }
2286 /* We must build the WHILE_STMT node before parsing its
2287 condition so that STMT_LINENO refers to the line
2288 containing the "while", and not the line containing
2289 the close-parenthesis.
2291 c_begin_while_stmt returns the WHILE_STMT node, which
2292 we later pass to c_finish_while_stmt_cond to fill
2293 in the condition and other tidbits. */
2294 | WHILE
2295 { stmt_count++;
2296 $<ttype>$ = c_begin_while_stmt (); }
2297 '(' expr ')'
2298 { $4 = c_common_truthvalue_conversion ($4);
2299 c_finish_while_stmt_cond
2300 (c_common_truthvalue_conversion ($4), $<ttype>2);
2301 $<ttype>$ = add_stmt ($<ttype>2); }
2302 c99_block_lineno_labeled_stmt
2303 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2304 | do_stmt_start
2305 '(' expr ')' ';'
2306 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2307 | do_stmt_start error
2308 { }
2309 | FOR
2310 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2311 NULL_TREE, NULL_TREE);
2312 add_stmt ($<ttype>$); }
2313 '(' for_init_stmt
2314 { stmt_count++;
2315 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2316 xexpr ';'
2317 { if ($6)
2318 FOR_COND ($<ttype>2)
2319 = c_common_truthvalue_conversion ($6); }
2320 xexpr ')'
2321 { FOR_EXPR ($<ttype>2) = $9; }
2322 c99_block_lineno_labeled_stmt
2323 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2324 | SWITCH '(' expr ')'
2325 { stmt_count++;
2326 $<ttype>$ = c_start_case ($3); }
2327 c99_block_lineno_labeled_stmt
2328 { c_finish_case (); }
2329 ;
2331 for_init_stmt:
2332 xexpr ';'
2333 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2334 | decl
2335 { check_for_loop_decls (); }
2336 ;
2338 /* Parse a single real statement, not including any labels. */
2339 stmt:
2340 compstmt
2341 { stmt_count++; $$ = $1; }
2342 | expr ';'
2343 { stmt_count++;
2344 $$ = c_expand_expr_stmt ($1); }
2345 | c99_block_start select_or_iter_stmt c99_block_end
2346 { if (flag_isoc99)
2347 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2348 $$ = NULL_TREE; }
2349 | BREAK ';'
2350 { stmt_count++;
2351 $$ = add_stmt (build_break_stmt ()); }
2352 | CONTINUE ';'
2353 { stmt_count++;
2354 $$ = add_stmt (build_continue_stmt ()); }
2355 | RETURN ';'
2356 { stmt_count++;
2357 $$ = c_expand_return (NULL_TREE); }
2358 | RETURN expr ';'
2359 { stmt_count++;
2360 $$ = c_expand_return ($2); }
2361 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2362 { stmt_count++;
2363 $$ = simple_asm_stmt ($4); }
2364 /* This is the case with just output operands. */
2365 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2366 { stmt_count++;
2367 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2368 /* This is the case with input operands as well. */
2369 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2370 asm_operands ')' ';'
2371 { stmt_count++;
2372 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2373 /* This is the case with clobbered registers as well. */
2374 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2375 asm_operands ':' asm_clobbers ')' ';'
2376 { stmt_count++;
2377 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2378 | GOTO identifier ';'
2379 { tree decl;
2380 stmt_count++;
2381 decl = lookup_label ($2);
2382 if (decl != 0)
2383 {
2384 TREE_USED (decl) = 1;
2385 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2386 }
2387 else
2388 $$ = NULL_TREE;
2389 }
2390 | GOTO '*' expr ';'
2391 { if (pedantic)
2392 pedwarn ("ISO C forbids `goto *expr;'");
2393 stmt_count++;
2394 $3 = convert (ptr_type_node, $3);
2395 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2396 | ';'
2397 { $$ = NULL_TREE; }
2398 @@ifobjc
2399 | AT_THROW expr ';'
2400 { stmt_count++;
2401 $$ = objc_build_throw_stmt ($2);
2402 }
2403 | AT_THROW ';'
2404 { stmt_count++;
2405 $$ = objc_build_throw_stmt (NULL_TREE);
2406 }
2407 | objc_try_catch_stmt
2408 { objc_build_finally_prologue (); }
2409 objc_finally_block
2410 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2411 | AT_SYNCHRONIZED '(' expr ')'
2412 { objc_build_synchronized_prologue ($3); }
2413 compstmt
2414 { $$ = objc_build_synchronized_epilogue (); }
2415 ;
2417 objc_try_catch_stmt:
2418 objc_try_stmt
2419 { objc_build_try_epilogue (1); }
2420 objc_catch_list
2421 { objc_build_catch_epilogue (); $$ = 1; }
2422 | objc_try_stmt
2423 { objc_build_try_epilogue (0); $$ = 0; }
2424 ;
2427 objc_try_stmt:
2428 AT_TRY
2429 { objc_build_try_prologue (); }
2430 compstmt
2431 ;
2433 objc_catch_list:
2434 objc_catch_list objc_catch_block
2435 | objc_catch_block
2436 ;
2438 objc_catch_block:
2439 AT_CATCH '(' parm ')'
2440 { objc_build_catch_stmt ($3); }
2441 compstmt
2442 { stmt_count++; }
2443 ;
2445 objc_finally_block:
2446 AT_FINALLY compstmt
2447 { $$ = 1; }
2448 | /* NULL */
2449 { $$ = 0; }
2450 @@end_ifobjc
2451 ;
2453 /* Any kind of label, including jump labels and case labels.
2454 ANSI C accepts labels only before statements, but we allow them
2455 also at the end of a compound statement. */
2457 label: CASE expr_no_commas ':'
2458 { stmt_count++;
2459 $$ = do_case ($2, NULL_TREE); }
2460 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2461 { stmt_count++;
2462 $$ = do_case ($2, $4); }
2463 | DEFAULT ':'
2464 { stmt_count++;
2465 $$ = do_case (NULL_TREE, NULL_TREE); }
2466 | identifier save_location ':' maybe_attribute
2467 { tree label = define_label ($2, $1);
2468 stmt_count++;
2469 if (label)
2470 {
2471 decl_attributes (&label, $4, 0);
2472 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2473 }
2474 else
2475 $$ = NULL_TREE;
2476 }
2477 ;
2479 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2481 maybe_type_qual:
2482 /* empty */
2483 { emit_line_note (input_location);
2484 $$ = NULL_TREE; }
2485 | TYPE_QUAL
2486 { emit_line_note (input_location); }
2487 ;
2489 xexpr:
2490 /* empty */
2491 { $$ = NULL_TREE; }
2492 | expr
2493 ;
2495 /* These are the operands other than the first string and colon
2496 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2497 asm_operands: /* empty */
2498 { $$ = NULL_TREE; }
2499 | nonnull_asm_operands
2500 ;
2502 nonnull_asm_operands:
2503 asm_operand
2504 | nonnull_asm_operands ',' asm_operand
2505 { $$ = chainon ($1, $3); }
2506 ;
2508 asm_operand:
2509 STRING '(' expr ')'
2510 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2511 | '[' identifier ']' STRING '(' expr ')'
2512 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2513 IDENTIFIER_POINTER ($2));
2514 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2515 ;
2517 asm_clobbers:
2518 STRING
2519 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2520 | asm_clobbers ',' STRING
2521 { $$ = tree_cons (NULL_TREE, $3, $1); }
2522 ;
2523 \f
2524 /* This is what appears inside the parens in a function declarator.
2525 Its value is a list of ..._TYPE nodes. Attributes must appear here
2526 to avoid a conflict with their appearance after an open parenthesis
2527 in an abstract declarator, as in
2528 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2529 parmlist:
2530 maybe_attribute
2531 { pushlevel (0);
2532 declare_parm_level (); }
2533 parmlist_1
2534 { $$ = $3;
2535 poplevel (0, 0, 0); }
2536 ;
2538 parmlist_1:
2539 parmlist_2 ')'
2540 | parms ';'
2541 { mark_forward_parm_decls (); }
2542 maybe_attribute
2543 { /* Dummy action so attributes are in known place
2544 on parser stack. */ }
2545 parmlist_1
2546 { $$ = $6; }
2547 | error ')'
2548 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2549 ;
2551 /* This is what appears inside the parens in a function declarator.
2552 Is value is represented in the format that grokdeclarator expects. */
2553 parmlist_2: /* empty */
2554 { $$ = get_parm_info (0); }
2555 | ELLIPSIS
2556 { $$ = get_parm_info (0);
2557 /* Gcc used to allow this as an extension. However, it does
2558 not work for all targets, and thus has been disabled.
2559 Also, since func (...) and func () are indistinguishable,
2560 it caused problems with the code in expand_builtin which
2561 tries to verify that BUILT_IN_NEXT_ARG is being used
2562 correctly. */
2563 error ("ISO C requires a named argument before `...'");
2564 parsing_iso_function_signature = true;
2565 }
2566 | parms
2567 { $$ = get_parm_info (1);
2568 parsing_iso_function_signature = true;
2569 }
2570 | parms ',' ELLIPSIS
2571 { $$ = get_parm_info (0);
2572 parsing_iso_function_signature = true;
2573 }
2574 ;
2576 parms:
2577 firstparm
2578 { push_parm_decl ($1); }
2579 | parms ',' parm
2580 { push_parm_decl ($3); }
2581 ;
2583 /* A single parameter declaration or parameter type name,
2584 as found in a parmlist. */
2585 parm:
2586 declspecs_ts setspecs parm_declarator maybe_attribute
2587 { $$ = build_tree_list (build_tree_list (current_declspecs,
2588 $3),
2589 chainon ($4, all_prefix_attributes));
2590 POP_DECLSPEC_STACK; }
2591 | declspecs_ts setspecs notype_declarator maybe_attribute
2592 { $$ = build_tree_list (build_tree_list (current_declspecs,
2593 $3),
2594 chainon ($4, all_prefix_attributes));
2595 POP_DECLSPEC_STACK; }
2596 | declspecs_ts setspecs absdcl_maybe_attribute
2597 { $$ = $3;
2598 POP_DECLSPEC_STACK; }
2599 | declspecs_nots setspecs notype_declarator maybe_attribute
2600 { $$ = build_tree_list (build_tree_list (current_declspecs,
2601 $3),
2602 chainon ($4, all_prefix_attributes));
2603 POP_DECLSPEC_STACK; }
2605 | declspecs_nots setspecs absdcl_maybe_attribute
2606 { $$ = $3;
2607 POP_DECLSPEC_STACK; }
2608 ;
2610 /* The first parm, which must suck attributes from off the top of the parser
2611 stack. */
2612 firstparm:
2613 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2614 { $$ = build_tree_list (build_tree_list (current_declspecs,
2615 $3),
2616 chainon ($4, all_prefix_attributes));
2617 POP_DECLSPEC_STACK; }
2618 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2619 { $$ = build_tree_list (build_tree_list (current_declspecs,
2620 $3),
2621 chainon ($4, all_prefix_attributes));
2622 POP_DECLSPEC_STACK; }
2623 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2624 { $$ = $3;
2625 POP_DECLSPEC_STACK; }
2626 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2627 { $$ = build_tree_list (build_tree_list (current_declspecs,
2628 $3),
2629 chainon ($4, all_prefix_attributes));
2630 POP_DECLSPEC_STACK; }
2632 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2633 { $$ = $3;
2634 POP_DECLSPEC_STACK; }
2635 ;
2637 setspecs_fp:
2638 setspecs
2639 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2640 all_prefix_attributes = prefix_attributes; }
2641 ;
2643 /* This is used in a function definition
2644 where either a parmlist or an identifier list is ok.
2645 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2646 parmlist_or_identifiers:
2647 maybe_attribute
2648 { pushlevel (0);
2649 declare_parm_level (); }
2650 parmlist_or_identifiers_1
2651 { $$ = $3;
2652 poplevel (0, 0, 0); }
2653 ;
2655 parmlist_or_identifiers_1:
2656 parmlist_1
2657 | identifiers ')'
2658 { tree t;
2659 for (t = $1; t; t = TREE_CHAIN (t))
2660 if (TREE_VALUE (t) == NULL_TREE)
2661 error ("`...' in old-style identifier list");
2662 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2664 /* Make sure we have a parmlist after attributes. */
2665 if ($<ttype>-1 != 0
2666 && (TREE_CODE ($$) != TREE_LIST
2667 || TREE_PURPOSE ($$) == 0
2668 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2669 YYERROR1;
2670 }
2671 ;
2673 /* A nonempty list of identifiers. */
2674 identifiers:
2675 IDENTIFIER
2676 { $$ = build_tree_list (NULL_TREE, $1); }
2677 | identifiers ',' IDENTIFIER
2678 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2679 ;
2681 /* A nonempty list of identifiers, including typenames. */
2682 identifiers_or_typenames:
2683 identifier
2684 { $$ = build_tree_list (NULL_TREE, $1); }
2685 | identifiers_or_typenames ',' identifier
2686 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2687 ;
2689 extension:
2690 EXTENSION
2691 { $$ = SAVE_EXT_FLAGS();
2692 pedantic = 0;
2693 warn_pointer_arith = 0;
2694 warn_traditional = 0;
2695 flag_iso = 0; }
2696 ;
2697 \f
2698 @@ifobjc
2699 /* Objective-C productions. */
2701 objcdef:
2702 classdef
2703 | classdecl
2704 | aliasdecl
2705 | protocoldef
2706 | methoddef
2707 | END
2708 {
2709 if (objc_implementation_context)
2710 {
2711 finish_class (objc_implementation_context);
2712 objc_ivar_chain = NULL_TREE;
2713 objc_implementation_context = NULL_TREE;
2714 }
2715 else
2716 warning ("`@end' must appear in an implementation context");
2717 }
2718 ;
2720 /* A nonempty list of identifiers. */
2721 identifier_list:
2722 identifier
2723 { $$ = build_tree_list (NULL_TREE, $1); }
2724 | identifier_list ',' identifier
2725 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2726 ;
2728 classdecl:
2729 CLASS identifier_list ';'
2730 {
2731 objc_declare_class ($2);
2732 }
2733 ;
2735 aliasdecl:
2736 ALIAS identifier identifier ';'
2737 {
2738 objc_declare_alias ($2, $3);
2739 }
2740 ;
2742 superclass:
2743 ':' identifier { $$ = $2; }
2744 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2745 ;
2747 class_ivars:
2748 '{' ivar_decl_list '}'
2749 | /* NULL */
2750 ;
2752 classdef:
2753 INTERFACE identifier superclass protocolrefs
2754 {
2755 objc_interface_context = objc_ivar_context
2756 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2757 objc_public_flag = 0;
2758 }
2759 class_ivars
2760 {
2761 continue_class (objc_interface_context);
2762 }
2763 methodprotolist END
2764 {
2765 finish_class (objc_interface_context);
2766 objc_interface_context = NULL_TREE;
2767 }
2769 | IMPLEMENTATION identifier superclass
2770 {
2771 objc_implementation_context = objc_ivar_context
2772 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2773 objc_public_flag = 0;
2774 }
2775 class_ivars
2776 {
2777 objc_ivar_chain
2778 = continue_class (objc_implementation_context);
2779 }
2781 | INTERFACE identifier '(' identifier ')' protocolrefs
2782 {
2783 objc_interface_context
2784 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2785 continue_class (objc_interface_context);
2786 }
2787 methodprotolist END
2788 {
2789 finish_class (objc_interface_context);
2790 objc_interface_context = NULL_TREE;
2791 }
2793 | IMPLEMENTATION identifier '(' identifier ')'
2794 {
2795 objc_implementation_context
2796 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2797 objc_ivar_chain
2798 = continue_class (objc_implementation_context);
2799 }
2800 ;
2802 protocoldef:
2803 PROTOCOL identifier protocolrefs
2804 {
2805 objc_pq_context = 1;
2806 objc_interface_context
2807 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2808 }
2809 methodprotolist END
2810 {
2811 objc_pq_context = 0;
2812 finish_protocol(objc_interface_context);
2813 objc_interface_context = NULL_TREE;
2814 }
2815 /* The @protocol forward-declaration production introduces a
2816 reduce/reduce conflict on ';', which should be resolved in
2817 favor of the production 'identifier_list -> identifier'. */
2818 | PROTOCOL identifier_list ';'
2819 {
2820 objc_declare_protocols ($2);
2821 }
2822 ;
2824 protocolrefs:
2825 /* empty */
2826 {
2827 $$ = NULL_TREE;
2828 }
2829 | non_empty_protocolrefs
2830 ;
2832 non_empty_protocolrefs:
2833 ARITHCOMPARE identifier_list ARITHCOMPARE
2834 {
2835 if ($1 == LT_EXPR && $3 == GT_EXPR)
2836 $$ = $2;
2837 else
2838 YYERROR1;
2839 }
2840 ;
2842 ivar_decl_list:
2843 ivar_decl_list visibility_spec ivar_decls
2844 | ivar_decls
2845 ;
2847 visibility_spec:
2848 PRIVATE { objc_public_flag = 2; }
2849 | PROTECTED { objc_public_flag = 0; }
2850 | PUBLIC { objc_public_flag = 1; }
2851 ;
2853 ivar_decls:
2854 /* empty */
2855 {
2856 $$ = NULL_TREE;
2857 }
2858 | ivar_decls ivar_decl ';'
2859 | ivar_decls ';'
2860 {
2861 if (pedantic)
2862 pedwarn ("extra semicolon in struct or union specified");
2863 }
2864 ;
2867 /* There is a shift-reduce conflict here, because `components' may
2868 start with a `typename'. It happens that shifting (the default resolution)
2869 does the right thing, because it treats the `typename' as part of
2870 a `typed_typespecs'.
2872 It is possible that this same technique would allow the distinction
2873 between `notype_initdecls' and `initdecls' to be eliminated.
2874 But I am being cautious and not trying it. */
2876 ivar_decl:
2877 declspecs_nosc_ts setspecs ivars
2878 { $$ = $3;
2879 POP_DECLSPEC_STACK; }
2880 | declspecs_nosc_nots setspecs ivars
2881 { $$ = $3;
2882 POP_DECLSPEC_STACK; }
2883 | error
2884 { $$ = NULL_TREE; }
2885 ;
2887 ivars:
2888 /* empty */
2889 { $$ = NULL_TREE; }
2890 | ivar_declarator
2891 | ivars ',' maybe_resetattrs ivar_declarator
2892 ;
2894 ivar_declarator:
2895 declarator
2896 {
2897 $$ = add_instance_variable (objc_ivar_context,
2898 objc_public_flag,
2899 $1, current_declspecs,
2900 NULL_TREE);
2901 }
2902 | declarator ':' expr_no_commas
2903 {
2904 $$ = add_instance_variable (objc_ivar_context,
2905 objc_public_flag,
2906 $1, current_declspecs, $3);
2907 }
2908 | ':' expr_no_commas
2909 {
2910 $$ = add_instance_variable (objc_ivar_context,
2911 objc_public_flag,
2912 NULL_TREE,
2913 current_declspecs, $2);
2914 }
2915 ;
2917 methodtype:
2918 '+'
2919 { objc_inherit_code = CLASS_METHOD_DECL; }
2920 | '-'
2921 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2922 ;
2924 methoddef:
2925 methodtype
2926 {
2927 objc_pq_context = 1;
2928 if (!objc_implementation_context)
2929 fatal_error ("method definition not in class context");
2930 }
2931 methoddecl
2932 {
2933 objc_pq_context = 0;
2934 objc_add_method (objc_implementation_context,
2935 $3,
2936 objc_inherit_code == CLASS_METHOD_DECL);
2937 start_method_def ($3);
2938 }
2939 optarglist
2940 {
2941 continue_method_def ();
2942 }
2943 compstmt_or_error
2944 {
2945 finish_method_def ();
2946 }
2947 ;
2949 /* the reason for the strange actions in this rule
2950 is so that notype_initdecls when reached via datadef
2951 can find a valid list of type and sc specs in $0. */
2953 methodprotolist:
2954 /* empty */
2955 | methodprotolist methodproto
2956 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2957 ;
2959 semi_or_error:
2960 ';'
2961 | error
2962 ;
2964 methodproto:
2965 methodtype
2966 {
2967 /* Remember protocol qualifiers in prototypes. */
2968 objc_pq_context = 1;
2969 }
2970 methoddecl
2971 {
2972 /* Forget protocol qualifiers here. */
2973 objc_pq_context = 0;
2974 objc_add_method (objc_interface_context,
2975 $3,
2976 objc_inherit_code == CLASS_METHOD_DECL);
2977 }
2978 semi_or_error
2979 ;
2981 methoddecl:
2982 '(' typename ')' unaryselector
2983 {
2984 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2985 }
2987 | unaryselector
2988 {
2989 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2990 }
2992 | '(' typename ')' keywordselector optparmlist
2993 {
2994 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
2995 }
2997 | keywordselector optparmlist
2998 {
2999 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3000 }
3001 ;
3003 /* "optarglist" assumes that start_method_def has already been called...
3004 if it is not, the "xdecls" will not be placed in the proper scope */
3006 optarglist:
3007 /* empty */
3008 | ';' myxdecls
3009 ;
3011 /* to get around the following situation: "int foo (int a) int b; {}" that
3012 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3014 myxdecls:
3015 /* empty */
3016 | mydecls
3017 ;
3019 mydecls:
3020 mydecl
3021 | errstmt
3022 | mydecls mydecl
3023 | mydecl errstmt
3024 ;
3026 mydecl:
3027 declspecs_ts setspecs myparms ';'
3028 { POP_DECLSPEC_STACK; }
3029 | declspecs_ts ';'
3030 { shadow_tag ($1); }
3031 | declspecs_nots ';'
3032 { pedwarn ("empty declaration"); }
3033 ;
3035 myparms:
3036 myparm
3037 { push_parm_decl ($1); }
3038 | myparms ',' myparm
3039 { push_parm_decl ($3); }
3040 ;
3042 /* A single parameter declaration or parameter type name,
3043 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3045 myparm:
3046 parm_declarator maybe_attribute
3047 { $$ = build_tree_list (build_tree_list (current_declspecs,
3048 $1),
3049 chainon ($2, all_prefix_attributes)); }
3050 | notype_declarator maybe_attribute
3051 { $$ = build_tree_list (build_tree_list (current_declspecs,
3052 $1),
3053 chainon ($2, all_prefix_attributes)); }
3054 | absdcl_maybe_attribute
3055 { $$ = $1; }
3056 ;
3058 optparmlist:
3059 /* empty */
3060 {
3061 $$ = NULL_TREE;
3062 }
3063 | ',' ELLIPSIS
3064 {
3065 /* oh what a kludge! */
3066 $$ = objc_ellipsis_node;
3067 }
3068 | ','
3069 {
3070 pushlevel (0);
3071 }
3072 parmlist_2
3073 {
3074 /* returns a tree list node generated by get_parm_info */
3075 $$ = $3;
3076 poplevel (0, 0, 0);
3077 }
3078 ;
3080 unaryselector:
3081 selector
3082 ;
3084 keywordselector:
3085 keyworddecl
3087 | keywordselector keyworddecl
3088 {
3089 $$ = chainon ($1, $2);
3090 }
3091 ;
3093 selector:
3094 IDENTIFIER
3095 | TYPENAME
3096 | CLASSNAME
3097 | OBJECTNAME
3098 | reservedwords
3099 ;
3101 reservedwords:
3102 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3103 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3104 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3105 | TYPESPEC | TYPE_QUAL
3106 ;
3108 keyworddecl:
3109 selector ':' '(' typename ')' identifier
3110 {
3111 $$ = build_keyword_decl ($1, $4, $6);
3112 }
3114 | selector ':' identifier
3115 {
3116 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3117 }
3119 | ':' '(' typename ')' identifier
3120 {
3121 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3122 }
3124 | ':' identifier
3125 {
3126 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3127 }
3128 ;
3130 messageargs:
3131 selector
3132 | keywordarglist
3133 ;
3135 keywordarglist:
3136 keywordarg
3137 | keywordarglist keywordarg
3138 {
3139 $$ = chainon ($1, $2);
3140 }
3141 ;
3144 keywordexpr:
3145 nonnull_exprlist
3146 {
3147 if (TREE_CHAIN ($1) == NULL_TREE)
3148 /* just return the expr., remove a level of indirection */
3149 $$ = TREE_VALUE ($1);
3150 else
3151 /* we have a comma expr., we will collapse later */
3152 $$ = $1;
3153 }
3154 ;
3156 keywordarg:
3157 selector ':' keywordexpr
3158 {
3159 $$ = build_tree_list ($1, $3);
3160 }
3161 | ':' keywordexpr
3162 {
3163 $$ = build_tree_list (NULL_TREE, $2);
3164 }
3165 ;
3167 receiver:
3168 expr
3169 | CLASSNAME
3170 {
3171 $$ = get_class_reference ($1);
3172 }
3173 | TYPENAME
3174 {
3175 $$ = get_class_reference ($1);
3176 }
3177 ;
3179 objcmessageexpr:
3180 '[' receiver messageargs ']'
3181 { $$ = build_tree_list ($2, $3); }
3182 ;
3184 selectorarg:
3185 selector
3186 | keywordnamelist
3187 ;
3189 keywordnamelist:
3190 keywordname
3191 | keywordnamelist keywordname
3192 {
3193 $$ = chainon ($1, $2);
3194 }
3195 ;
3197 keywordname:
3198 selector ':'
3199 {
3200 $$ = build_tree_list ($1, NULL_TREE);
3201 }
3202 | ':'
3203 {
3204 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3205 }
3206 ;
3208 objcselectorexpr:
3209 SELECTOR '(' selectorarg ')'
3210 {
3211 $$ = $3;
3212 }
3213 ;
3215 objcprotocolexpr:
3216 PROTOCOL '(' identifier ')'
3217 {
3218 $$ = $3;
3219 }
3220 ;
3222 /* extension to support C-structures in the archiver */
3224 objcencodeexpr:
3225 ENCODE '(' typename ')'
3226 {
3227 $$ = groktypename ($3);
3228 }
3229 ;
3231 @@end_ifobjc
3232 %%
3234 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3235 cpplib.h's token codes into yacc's token codes. */
3237 static enum cpp_ttype last_token;
3239 /* The reserved keyword table. */
3240 struct resword
3241 {
3242 const char *word;
3243 ENUM_BITFIELD(rid) rid : 16;
3244 unsigned int disable : 16;
3245 };
3247 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3248 _true_. */
3249 #define D_C89 0x01 /* not in C89 */
3250 #define D_EXT 0x02 /* GCC extension */
3251 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3252 #define D_OBJC 0x08 /* Objective C only */
3254 static const struct resword reswords[] =
3255 {
3256 { "_Bool", RID_BOOL, 0 },
3257 { "_Complex", RID_COMPLEX, 0 },
3258 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3259 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3260 { "__alignof", RID_ALIGNOF, 0 },
3261 { "__alignof__", RID_ALIGNOF, 0 },
3262 { "__asm", RID_ASM, 0 },
3263 { "__asm__", RID_ASM, 0 },
3264 { "__attribute", RID_ATTRIBUTE, 0 },
3265 { "__attribute__", RID_ATTRIBUTE, 0 },
3266 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3267 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3268 { "__builtin_va_arg", RID_VA_ARG, 0 },
3269 { "__complex", RID_COMPLEX, 0 },
3270 { "__complex__", RID_COMPLEX, 0 },
3271 { "__const", RID_CONST, 0 },
3272 { "__const__", RID_CONST, 0 },
3273 { "__extension__", RID_EXTENSION, 0 },
3274 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3275 { "__imag", RID_IMAGPART, 0 },
3276 { "__imag__", RID_IMAGPART, 0 },
3277 { "__inline", RID_INLINE, 0 },
3278 { "__inline__", RID_INLINE, 0 },
3279 { "__label__", RID_LABEL, 0 },
3280 { "__ptrbase", RID_PTRBASE, 0 },
3281 { "__ptrbase__", RID_PTRBASE, 0 },
3282 { "__ptrextent", RID_PTREXTENT, 0 },
3283 { "__ptrextent__", RID_PTREXTENT, 0 },
3284 { "__ptrvalue", RID_PTRVALUE, 0 },
3285 { "__ptrvalue__", RID_PTRVALUE, 0 },
3286 { "__real", RID_REALPART, 0 },
3287 { "__real__", RID_REALPART, 0 },
3288 { "__restrict", RID_RESTRICT, 0 },
3289 { "__restrict__", RID_RESTRICT, 0 },
3290 { "__signed", RID_SIGNED, 0 },
3291 { "__signed__", RID_SIGNED, 0 },
3292 { "__thread", RID_THREAD, 0 },
3293 { "__typeof", RID_TYPEOF, 0 },
3294 { "__typeof__", RID_TYPEOF, 0 },
3295 { "__volatile", RID_VOLATILE, 0 },
3296 { "__volatile__", RID_VOLATILE, 0 },
3297 { "asm", RID_ASM, D_EXT },
3298 { "auto", RID_AUTO, 0 },
3299 { "break", RID_BREAK, 0 },
3300 { "case", RID_CASE, 0 },
3301 { "char", RID_CHAR, 0 },
3302 { "const", RID_CONST, 0 },
3303 { "continue", RID_CONTINUE, 0 },
3304 { "default", RID_DEFAULT, 0 },
3305 { "do", RID_DO, 0 },
3306 { "double", RID_DOUBLE, 0 },
3307 { "else", RID_ELSE, 0 },
3308 { "enum", RID_ENUM, 0 },
3309 { "extern", RID_EXTERN, 0 },
3310 { "float", RID_FLOAT, 0 },
3311 { "for", RID_FOR, 0 },
3312 { "goto", RID_GOTO, 0 },
3313 { "if", RID_IF, 0 },
3314 { "inline", RID_INLINE, D_EXT89 },
3315 { "int", RID_INT, 0 },
3316 { "long", RID_LONG, 0 },
3317 { "register", RID_REGISTER, 0 },
3318 { "restrict", RID_RESTRICT, D_C89 },
3319 { "return", RID_RETURN, 0 },
3320 { "short", RID_SHORT, 0 },
3321 { "signed", RID_SIGNED, 0 },
3322 { "sizeof", RID_SIZEOF, 0 },
3323 { "static", RID_STATIC, 0 },
3324 { "struct", RID_STRUCT, 0 },
3325 { "switch", RID_SWITCH, 0 },
3326 { "typedef", RID_TYPEDEF, 0 },
3327 { "typeof", RID_TYPEOF, D_EXT },
3328 { "union", RID_UNION, 0 },
3329 { "unsigned", RID_UNSIGNED, 0 },
3330 { "void", RID_VOID, 0 },
3331 { "volatile", RID_VOLATILE, 0 },
3332 { "while", RID_WHILE, 0 },
3333 @@ifobjc
3334 { "id", RID_ID, D_OBJC },
3336 /* These objc keywords are recognized only immediately after
3337 an '@'. */
3338 { "class", RID_AT_CLASS, D_OBJC },
3339 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3340 { "defs", RID_AT_DEFS, D_OBJC },
3341 { "encode", RID_AT_ENCODE, D_OBJC },
3342 { "end", RID_AT_END, D_OBJC },
3343 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3344 { "interface", RID_AT_INTERFACE, D_OBJC },
3345 { "private", RID_AT_PRIVATE, D_OBJC },
3346 { "protected", RID_AT_PROTECTED, D_OBJC },
3347 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3348 { "public", RID_AT_PUBLIC, D_OBJC },
3349 { "selector", RID_AT_SELECTOR, D_OBJC },
3350 { "throw", RID_AT_THROW, D_OBJC },
3351 { "try", RID_AT_TRY, D_OBJC },
3352 { "catch", RID_AT_CATCH, D_OBJC },
3353 { "finally", RID_AT_FINALLY, D_OBJC },
3354 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3355 /* These are recognized only in protocol-qualifier context
3356 (see above) */
3357 { "bycopy", RID_BYCOPY, D_OBJC },
3358 { "byref", RID_BYREF, D_OBJC },
3359 { "in", RID_IN, D_OBJC },
3360 { "inout", RID_INOUT, D_OBJC },
3361 { "oneway", RID_ONEWAY, D_OBJC },
3362 { "out", RID_OUT, D_OBJC },
3363 @@end_ifobjc
3364 };
3365 #define N_reswords (sizeof reswords / sizeof (struct resword))
3367 /* Table mapping from RID_* constants to yacc token numbers.
3368 Unfortunately we have to have entries for all the keywords in all
3369 three languages. */
3370 static const short rid_to_yy[RID_MAX] =
3371 {
3372 /* RID_STATIC */ STATIC,
3373 /* RID_UNSIGNED */ TYPESPEC,
3374 /* RID_LONG */ TYPESPEC,
3375 /* RID_CONST */ TYPE_QUAL,
3376 /* RID_EXTERN */ SCSPEC,
3377 /* RID_REGISTER */ SCSPEC,
3378 /* RID_TYPEDEF */ SCSPEC,
3379 /* RID_SHORT */ TYPESPEC,
3380 /* RID_INLINE */ SCSPEC,
3381 /* RID_VOLATILE */ TYPE_QUAL,
3382 /* RID_SIGNED */ TYPESPEC,
3383 /* RID_AUTO */ SCSPEC,
3384 /* RID_RESTRICT */ TYPE_QUAL,
3386 /* C extensions */
3387 /* RID_COMPLEX */ TYPESPEC,
3388 /* RID_THREAD */ SCSPEC,
3390 /* C++ */
3391 /* RID_FRIEND */ 0,
3392 /* RID_VIRTUAL */ 0,
3393 /* RID_EXPLICIT */ 0,
3394 /* RID_EXPORT */ 0,
3395 /* RID_MUTABLE */ 0,
3397 /* ObjC */
3398 /* RID_IN */ TYPE_QUAL,
3399 /* RID_OUT */ TYPE_QUAL,
3400 /* RID_INOUT */ TYPE_QUAL,
3401 /* RID_BYCOPY */ TYPE_QUAL,
3402 /* RID_BYREF */ TYPE_QUAL,
3403 /* RID_ONEWAY */ TYPE_QUAL,
3405 /* C */
3406 /* RID_INT */ TYPESPEC,
3407 /* RID_CHAR */ TYPESPEC,
3408 /* RID_FLOAT */ TYPESPEC,
3409 /* RID_DOUBLE */ TYPESPEC,
3410 /* RID_VOID */ TYPESPEC,
3411 /* RID_ENUM */ ENUM,
3412 /* RID_STRUCT */ STRUCT,
3413 /* RID_UNION */ UNION,
3414 /* RID_IF */ IF,
3415 /* RID_ELSE */ ELSE,
3416 /* RID_WHILE */ WHILE,
3417 /* RID_DO */ DO,
3418 /* RID_FOR */ FOR,
3419 /* RID_SWITCH */ SWITCH,
3420 /* RID_CASE */ CASE,
3421 /* RID_DEFAULT */ DEFAULT,
3422 /* RID_BREAK */ BREAK,
3423 /* RID_CONTINUE */ CONTINUE,
3424 /* RID_RETURN */ RETURN,
3425 /* RID_GOTO */ GOTO,
3426 /* RID_SIZEOF */ SIZEOF,
3428 /* C extensions */
3429 /* RID_ASM */ ASM_KEYWORD,
3430 /* RID_TYPEOF */ TYPEOF,
3431 /* RID_ALIGNOF */ ALIGNOF,
3432 /* RID_ATTRIBUTE */ ATTRIBUTE,
3433 /* RID_VA_ARG */ VA_ARG,
3434 /* RID_EXTENSION */ EXTENSION,
3435 /* RID_IMAGPART */ IMAGPART,
3436 /* RID_REALPART */ REALPART,
3437 /* RID_LABEL */ LABEL,
3438 /* RID_PTRBASE */ PTR_BASE,
3439 /* RID_PTREXTENT */ PTR_EXTENT,
3440 /* RID_PTRVALUE */ PTR_VALUE,
3442 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3443 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3445 /* RID_FUNCTION_NAME */ FUNC_NAME,
3446 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3447 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3449 /* C++ */
3450 /* RID_BOOL */ TYPESPEC,
3451 /* RID_WCHAR */ 0,
3452 /* RID_CLASS */ 0,
3453 /* RID_PUBLIC */ 0,
3454 /* RID_PRIVATE */ 0,
3455 /* RID_PROTECTED */ 0,
3456 /* RID_TEMPLATE */ 0,
3457 /* RID_NULL */ 0,
3458 /* RID_CATCH */ 0,
3459 /* RID_DELETE */ 0,
3460 /* RID_FALSE */ 0,
3461 /* RID_NAMESPACE */ 0,
3462 /* RID_NEW */ 0,
3463 /* RID_OPERATOR */ 0,
3464 /* RID_THIS */ 0,
3465 /* RID_THROW */ 0,
3466 /* RID_TRUE */ 0,
3467 /* RID_TRY */ 0,
3468 /* RID_TYPENAME */ 0,
3469 /* RID_TYPEID */ 0,
3470 /* RID_USING */ 0,
3472 /* casts */
3473 /* RID_CONSTCAST */ 0,
3474 /* RID_DYNCAST */ 0,
3475 /* RID_REINTCAST */ 0,
3476 /* RID_STATCAST */ 0,
3478 /* Objective C */
3479 /* RID_ID */ OBJECTNAME,
3480 /* RID_AT_ENCODE */ ENCODE,
3481 /* RID_AT_END */ END,
3482 /* RID_AT_CLASS */ CLASS,
3483 /* RID_AT_ALIAS */ ALIAS,
3484 /* RID_AT_DEFS */ DEFS,
3485 /* RID_AT_PRIVATE */ PRIVATE,
3486 /* RID_AT_PROTECTED */ PROTECTED,
3487 /* RID_AT_PUBLIC */ PUBLIC,
3488 /* RID_AT_PROTOCOL */ PROTOCOL,
3489 /* RID_AT_SELECTOR */ SELECTOR,
3490 /* RID_AT_THROW */ AT_THROW,
3491 /* RID_AT_TRY */ AT_TRY,
3492 /* RID_AT_CATCH */ AT_CATCH,
3493 /* RID_AT_FINALLY */ AT_FINALLY,
3494 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3495 /* RID_AT_INTERFACE */ INTERFACE,
3496 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3497 };
3499 static void
3500 init_reswords (void)
3501 {
3502 unsigned int i;
3503 tree id;
3504 int mask = (flag_isoc99 ? 0 : D_C89)
3505 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3507 if (!c_dialect_objc ())
3508 mask |= D_OBJC;
3510 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3511 for (i = 0; i < N_reswords; i++)
3512 {
3513 /* If a keyword is disabled, do not enter it into the table
3514 and so create a canonical spelling that isn't a keyword. */
3515 if (reswords[i].disable & mask)
3516 continue;
3518 id = get_identifier (reswords[i].word);
3519 C_RID_CODE (id) = reswords[i].rid;
3520 C_IS_RESERVED_WORD (id) = 1;
3521 ridpointers [(int) reswords[i].rid] = id;
3522 }
3523 }
3525 #define NAME(type) cpp_type2name (type)
3527 static void
3528 yyerror (const char *msgid)
3529 {
3530 const char *string = _(msgid);
3532 if (last_token == CPP_EOF)
3533 error ("%s at end of input", string);
3534 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3535 {
3536 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3537 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3538 if (val <= UCHAR_MAX && ISGRAPH (val))
3539 error ("%s before %s'%c'", string, ell, val);
3540 else
3541 error ("%s before %s'\\x%x'", string, ell, val);
3542 }
3543 else if (last_token == CPP_STRING
3544 || last_token == CPP_WSTRING)
3545 error ("%s before string constant", string);
3546 else if (last_token == CPP_NUMBER)
3547 error ("%s before numeric constant", string);
3548 else if (last_token == CPP_NAME)
3549 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3550 else
3551 error ("%s before '%s' token", string, NAME(last_token));
3552 }
3554 static int
3555 yylexname (void)
3556 {
3557 tree decl;
3559 @@ifobjc
3560 int objc_force_identifier = objc_need_raw_identifier;
3561 OBJC_NEED_RAW_IDENTIFIER (0);
3562 @@end_ifobjc
3564 if (C_IS_RESERVED_WORD (yylval.ttype))
3565 {
3566 enum rid rid_code = C_RID_CODE (yylval.ttype);
3568 @@ifobjc
3569 /* Turn non-typedefed refs to "id" into plain identifiers; this
3570 allows constructs like "void foo(id id);" to work. */
3571 if (rid_code == RID_ID)
3572 {
3573 decl = lookup_name (yylval.ttype);
3574 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3575 return IDENTIFIER;
3576 }
3578 if (!OBJC_IS_AT_KEYWORD (rid_code)
3579 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3580 @@end_ifobjc
3581 {
3582 /* Return the canonical spelling for this keyword. */
3583 yylval.ttype = ridpointers[(int) rid_code];
3584 return rid_to_yy[(int) rid_code];
3585 }
3586 }
3588 decl = lookup_name (yylval.ttype);
3589 if (decl)
3590 {
3591 if (TREE_CODE (decl) == TYPE_DECL)
3592 return TYPENAME;
3593 }
3594 @@ifobjc
3595 else
3596 {
3597 tree objc_interface_decl = is_class_name (yylval.ttype);
3598 /* ObjC class names are in the same namespace as variables and
3599 typedefs, and hence are shadowed by local declarations. */
3600 if (objc_interface_decl
3601 && (global_bindings_p ()
3602 || (!objc_force_identifier && !decl)))
3603 {
3604 yylval.ttype = objc_interface_decl;
3605 return CLASSNAME;
3606 }
3607 }
3608 @@end_ifobjc
3610 return IDENTIFIER;
3611 }
3613 static inline int
3614 _yylex (void)
3615 {
3616 get_next:
3617 last_token = c_lex (&yylval.ttype);
3618 switch (last_token)
3619 {
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 ';';
3674 case CPP_EOF:
3675 return 0;
3677 case CPP_NAME:
3678 return yylexname ();
3680 case CPP_AT_NAME:
3681 /* This only happens in Objective-C; it must be a keyword. */
3682 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3684 case CPP_NUMBER:
3685 case CPP_CHAR:
3686 case CPP_WCHAR:
3687 return CONSTANT;
3689 case CPP_STRING:
3690 case CPP_WSTRING:
3691 return STRING;
3693 case CPP_OBJC_STRING:
3694 return OBJC_STRING;
3696 /* These tokens are C++ specific (and will not be generated
3697 in C mode, but let's be cautious). */
3698 case CPP_SCOPE:
3699 case CPP_DEREF_STAR:
3700 case CPP_DOT_STAR:
3701 case CPP_MIN_EQ:
3702 case CPP_MAX_EQ:
3703 case CPP_MIN:
3704 case CPP_MAX:
3705 /* These tokens should not survive translation phase 4. */
3706 case CPP_HASH:
3707 case CPP_PASTE:
3708 error ("syntax error at '%s' token", NAME(last_token));
3709 goto get_next;
3711 default:
3712 abort ();
3713 }
3714 /* NOTREACHED */
3715 }
3717 static int
3718 yylex (void)
3719 {
3720 int r;
3721 timevar_push (TV_LEX);
3722 r = _yylex();
3723 timevar_pop (TV_LEX);
3724 return r;
3725 }
3727 /* Function used when yydebug is set, to print a token in more detail. */
3729 static void
3730 yyprint (FILE *file, int yychar, YYSTYPE yyl)
3731 {
3732 tree t = yyl.ttype;
3734 fprintf (file, " [%s]", NAME(last_token));
3736 switch (yychar)
3737 {
3738 case IDENTIFIER:
3739 case TYPENAME:
3740 case OBJECTNAME:
3741 case TYPESPEC:
3742 case TYPE_QUAL:
3743 case SCSPEC:
3744 case STATIC:
3745 if (IDENTIFIER_POINTER (t))
3746 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3747 break;
3749 case CONSTANT:
3750 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3751 if (TREE_CODE (t) == INTEGER_CST)
3752 {
3753 fputs (" ", file);
3754 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3755 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3756 }
3757 break;
3758 }
3759 }
3760 \f
3761 /* This is not the ideal place to put these, but we have to get them out
3762 of c-lex.c because cp/lex.c has its own versions. */
3764 /* Free malloced parser stacks if necessary. */
3766 void
3767 free_parser_stacks (void)
3768 {
3769 }
3771 /* Parse the file. */
3772 void
3773 c_parse_file (void)
3774 {
3775 yyparse ();
3776 /* In case there were missing closebraces, get us back to the global
3777 binding level. */
3778 while (! global_bindings_p ())
3779 poplevel (0, 0, 0);
3780 /* __FUNCTION__ is defined at file scope (""). This
3781 call may not be necessary as my tests indicate it
3782 still works without it. */
3783 finish_fname_decls ();
3785 if (malloced_yyss)
3786 {
3787 free (malloced_yyss);
3788 free (malloced_yyvs);
3789 malloced_yyss = 0;
3790 }
3791 }
3793 #include "gt-c-parse.h"