| blob | 78a53869dd76aba35f88041aabafc2e596b81a9b |
1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
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 ifobjc
32 %expect 31 /* shift/reduce conflicts, and 1 reduce/reduce conflict. */
33 end ifobjc
34 ifc
35 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
36 end ifc
38 %{
39 #include "config.h"
40 #include "system.h"
41 #include "tree.h"
42 #include "input.h"
43 #include "cpplib.h"
44 #include "intl.h"
45 #include "timevar.h"
46 #include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
47 #include "c-tree.h"
48 #include "flags.h"
49 #include "output.h"
50 #include "toplev.h"
51 #include "ggc.h"
53 #ifdef MULTIBYTE_CHARS
54 #include <locale.h>
55 #endif
57 ifobjc
58 #include "objc-act.h"
59 end ifobjc
61 /* Like YYERROR but do call yyerror. */
62 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
64 /* Like the default stack expander, except (1) use realloc when possible,
65 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
67 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
68 give malloced_yyvs its proper type. This is ok since all we need from
69 it is to be able to free it. */
71 static short *malloced_yyss;
72 static void *malloced_yyvs;
74 #define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
75 do { \
76 size_t newsize; \
77 short *newss; \
78 YYSTYPE *newvs; \
79 newsize = *(YYSSZ) *= 2; \
80 if (malloced_yyss) \
81 { \
82 newss = (short *) \
83 really_call_realloc (*(SS), newsize * sizeof (short)); \
84 newvs = (YYSTYPE *) \
85 really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
86 } \
87 else \
88 { \
89 newss = (short *) really_call_malloc (newsize * sizeof (short)); \
90 newvs = (YYSTYPE *) really_call_malloc (newsize * sizeof (YYSTYPE)); \
91 if (newss) \
92 memcpy (newss, *(SS), (SSSIZE)); \
93 if (newvs) \
94 memcpy (newvs, *(VS), (VSSIZE)); \
95 } \
96 if (!newss || !newvs) \
97 { \
98 yyerror (MSG); \
99 return 2; \
100 } \
101 *(SS) = newss; \
102 *(VS) = newvs; \
103 malloced_yyss = newss; \
104 malloced_yyvs = (void *) newvs; \
105 } while (0)
106 %}
108 %start program
110 %union {long itype; tree ttype; enum tree_code code;
111 const char *filename; int lineno; }
113 /* All identifiers that are not reserved words
114 and are not declared typedefs in the current block */
115 %token IDENTIFIER
117 /* All identifiers that are declared typedefs in the current block.
118 In some contexts, they are treated just like IDENTIFIER,
119 but they can also serve as typespecs in declarations. */
120 %token TYPENAME
122 /* Reserved words that specify storage class.
123 yylval contains an IDENTIFIER_NODE which indicates which one. */
124 %token SCSPEC /* Storage class other than static. */
125 %token STATIC /* Static storage class. */
127 /* Reserved words that specify type.
128 yylval contains an IDENTIFIER_NODE which indicates which one. */
129 %token TYPESPEC
131 /* Reserved words that qualify type: "const", "volatile", or "restrict".
132 yylval contains an IDENTIFIER_NODE which indicates which one. */
133 %token TYPE_QUAL
135 /* Character or numeric constants.
136 yylval is the node for the constant. */
137 %token CONSTANT
139 /* String constants in raw form.
140 yylval is a STRING_CST node. */
141 %token STRING
143 /* "...", used for functions with variable arglists. */
144 %token ELLIPSIS
146 /* the reserved words */
147 /* SCO include files test "ASM", so use something else. */
148 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
149 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
150 %token ATTRIBUTE EXTENSION LABEL
151 %token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
152 %token PTR_VALUE PTR_BASE PTR_EXTENT
154 /* function name can be a string const or a var decl. */
155 %token STRING_FUNC_NAME VAR_FUNC_NAME
157 /* Add precedence rules to solve dangling else s/r conflict */
158 %nonassoc IF
159 %nonassoc ELSE
161 /* Define the operator tokens and their precedences.
162 The value is an integer because, if used, it is the tree code
163 to use in the expression made from the operator. */
165 %right <code> ASSIGN '='
166 %right <code> '?' ':'
167 %left <code> OROR
168 %left <code> ANDAND
169 %left <code> '|'
170 %left <code> '^'
171 %left <code> '&'
172 %left <code> EQCOMPARE
173 %left <code> ARITHCOMPARE
174 %left <code> LSHIFT RSHIFT
175 %left <code> '+' '-'
176 %left <code> '*' '/' '%'
177 %right <code> UNARY PLUSPLUS MINUSMINUS
178 %left HYPERUNARY
179 %left <code> POINTSAT '.' '(' '['
181 /* The Objective-C keywords. These are included in C and in
182 Objective C, so that the token codes are the same in both. */
183 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
184 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
186 %type <code> unop
187 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
188 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
190 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
191 %type <ttype> expr_no_commas cast_expr unary_expr primary STRING
192 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
193 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
194 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
195 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
196 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
197 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
198 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
199 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
200 %type <ttype> declspecs_ts declspecs_nots
201 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
202 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
203 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
204 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
205 %type <ttype> typespec_nonreserved_nonattr
207 %type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
208 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
209 %type <ttype> init maybeasm
210 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
211 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
212 %type <ttype> any_word extension
214 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
215 %type <ttype> do_stmt_start poplevel stmt label
217 %type <ttype> c99_block_start c99_block_end
218 %type <ttype> declarator
219 %type <ttype> notype_declarator after_type_declarator
220 %type <ttype> parm_declarator
221 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
222 %type <ttype> array_declarator
224 %type <ttype> structsp_attr structsp_nonattr
225 %type <ttype> component_decl_list component_decl_list2
226 %type <ttype> component_decl components components_notype component_declarator
227 %type <ttype> component_notype_declarator
228 %type <ttype> enumlist enumerator
229 %type <ttype> struct_head union_head enum_head
230 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
231 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
232 %type <ttype> xexpr parms parm firstparm identifiers
234 %type <ttype> parmlist parmlist_1 parmlist_2
235 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
236 %type <ttype> identifiers_or_typenames
238 %type <itype> setspecs setspecs_fp
240 %type <filename> save_filename
241 %type <lineno> save_lineno
242 \f
243 ifobjc
244 /* the Objective-C nonterminals */
246 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
247 %type <ttype> methoddecl unaryselector keywordselector selector
248 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
249 %type <ttype> keywordexpr keywordarglist keywordarg
250 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
251 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
252 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
254 %type <ttype> CLASSNAME OBJECTNAME
255 end ifobjc
256 \f
257 %{
258 /* Number of statements (loosely speaking) and compound statements
259 seen so far. */
260 static int stmt_count;
261 static int compstmt_count;
263 /* Input file and line number of the end of the body of last simple_if;
264 used by the stmt-rule immediately after simple_if returns. */
265 static const char *if_stmt_file;
266 static int if_stmt_line;
268 /* List of types and structure classes of the current declaration. */
269 static tree current_declspecs = NULL_TREE;
270 static tree prefix_attributes = NULL_TREE;
272 /* List of all the attributes applying to the identifier currently being
273 declared; includes prefix_attributes and possibly some more attributes
274 just after a comma. */
275 static tree all_prefix_attributes = NULL_TREE;
277 /* Stack of saved values of current_declspecs, prefix_attributes and
278 all_prefix_attributes. */
279 static tree declspec_stack;
281 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
282 should be called from the productions making use of setspecs. */
283 #define PUSH_DECLSPEC_STACK \
284 do { \
285 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
286 all_prefix_attributes), \
287 current_declspecs, \
288 declspec_stack); \
289 } while (0)
291 #define POP_DECLSPEC_STACK \
292 do { \
293 current_declspecs = TREE_VALUE (declspec_stack); \
294 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
295 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
296 declspec_stack = TREE_CHAIN (declspec_stack); \
297 } while (0)
299 /* For __extension__, save/restore the warning flags which are
300 controlled by __extension__. */
301 #define SAVE_WARN_FLAGS() \
302 size_int (pedantic \
303 | (warn_pointer_arith << 1) \
304 | (warn_traditional << 2))
306 #define RESTORE_WARN_FLAGS(tval) \
307 do { \
308 int val = tree_low_cst (tval, 0); \
309 pedantic = val & 1; \
310 warn_pointer_arith = (val >> 1) & 1; \
311 warn_traditional = (val >> 2) & 1; \
312 } while (0)
314 ifobjc
315 /* Objective-C specific parser/lexer information */
317 static enum tree_code objc_inherit_code;
318 static int objc_pq_context = 0, objc_public_flag = 0;
320 /* The following flag is needed to contextualize ObjC lexical analysis.
321 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
322 an identifier to an ObjC class, even if a class with that name
323 exists. */
324 static int objc_need_raw_identifier;
325 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
326 end ifobjc
328 ifc
329 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
330 end ifc
332 /* Tell yyparse how to print a token's value, if yydebug is set. */
334 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
336 static void yyprint PARAMS ((FILE *, int, YYSTYPE));
337 static void yyerror PARAMS ((const char *));
338 static int yylexname PARAMS ((void));
339 static int yylexstring PARAMS ((void));
340 static inline int _yylex PARAMS ((void));
341 static int yylex PARAMS ((void));
342 static void init_reswords PARAMS ((void));
344 /* Add GC roots for variables local to this file. */
345 void
346 c_parse_init ()
347 {
348 init_reswords ();
350 ggc_add_tree_root (&declspec_stack, 1);
351 ggc_add_tree_root (¤t_declspecs, 1);
352 ggc_add_tree_root (&prefix_attributes, 1);
353 ggc_add_tree_root (&all_prefix_attributes, 1);
354 }
356 %}
357 \f
358 %%
359 program: /* empty */
360 { if (pedantic)
361 pedwarn ("ISO C forbids an empty source file");
362 finish_file ();
363 }
364 | extdefs
365 {
366 /* In case there were missing closebraces,
367 get us back to the global binding level. */
368 while (! global_bindings_p ())
369 poplevel (0, 0, 0);
370 /* __FUNCTION__ is defined at file scope (""). This
371 call may not be necessary as my tests indicate it
372 still works without it. */
373 finish_fname_decls ();
374 finish_file ();
375 }
376 ;
378 /* the reason for the strange actions in this rule
379 is so that notype_initdecls when reached via datadef
380 can find a valid list of type and sc specs in $0. */
382 extdefs:
383 {$<ttype>$ = NULL_TREE; } extdef
384 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
385 ;
387 extdef:
388 fndef
389 | datadef
390 ifobjc
391 | objcdef
392 end ifobjc
393 | ASM_KEYWORD '(' expr ')' ';'
394 { STRIP_NOPS ($3);
395 if ((TREE_CODE ($3) == ADDR_EXPR
396 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
397 || TREE_CODE ($3) == STRING_CST)
398 assemble_asm ($3);
399 else
400 error ("argument of `asm' is not a constant string"); }
401 | extension extdef
402 { RESTORE_WARN_FLAGS ($1); }
403 ;
405 datadef:
406 setspecs notype_initdecls ';'
407 { if (pedantic)
408 error ("ISO C forbids data definition with no type or storage class");
409 else
410 warning ("data definition has no type or storage class");
412 POP_DECLSPEC_STACK; }
413 | declspecs_nots setspecs notype_initdecls ';'
414 { POP_DECLSPEC_STACK; }
415 | declspecs_ts setspecs initdecls ';'
416 { POP_DECLSPEC_STACK; }
417 | declspecs ';'
418 { shadow_tag ($1); }
419 | error ';'
420 | error '}'
421 | ';'
422 { if (pedantic)
423 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
424 ;
425 \f
426 fndef:
427 declspecs_ts setspecs declarator
428 { if (! start_function (current_declspecs, $3,
429 all_prefix_attributes))
430 YYERROR1;
431 }
432 old_style_parm_decls
433 { store_parm_decls (); }
434 save_filename save_lineno compstmt_or_error
435 { DECL_SOURCE_FILE (current_function_decl) = $7;
436 DECL_SOURCE_LINE (current_function_decl) = $8;
437 finish_function (0, 1);
438 POP_DECLSPEC_STACK; }
439 | declspecs_ts setspecs declarator error
440 { POP_DECLSPEC_STACK; }
441 | declspecs_nots setspecs notype_declarator
442 { if (! start_function (current_declspecs, $3,
443 all_prefix_attributes))
444 YYERROR1;
445 }
446 old_style_parm_decls
447 { store_parm_decls (); }
448 save_filename save_lineno compstmt_or_error
449 { DECL_SOURCE_FILE (current_function_decl) = $7;
450 DECL_SOURCE_LINE (current_function_decl) = $8;
451 finish_function (0, 1);
452 POP_DECLSPEC_STACK; }
453 | declspecs_nots setspecs notype_declarator error
454 { POP_DECLSPEC_STACK; }
455 | setspecs notype_declarator
456 { if (! start_function (NULL_TREE, $2,
457 all_prefix_attributes))
458 YYERROR1;
459 }
460 old_style_parm_decls
461 { store_parm_decls (); }
462 save_filename save_lineno compstmt_or_error
463 { DECL_SOURCE_FILE (current_function_decl) = $6;
464 DECL_SOURCE_LINE (current_function_decl) = $7;
465 finish_function (0, 1);
466 POP_DECLSPEC_STACK; }
467 | setspecs notype_declarator error
468 { POP_DECLSPEC_STACK; }
469 ;
471 identifier:
472 IDENTIFIER
473 | TYPENAME
474 ifobjc
475 | OBJECTNAME
476 | CLASSNAME
477 end ifobjc
478 ;
480 unop: '&'
481 { $$ = ADDR_EXPR; }
482 | '-'
483 { $$ = NEGATE_EXPR; }
484 | '+'
485 { $$ = CONVERT_EXPR;
486 ifc
487 if (warn_traditional && !in_system_header)
488 warning ("traditional C rejects the unary plus operator");
489 end ifc
490 }
491 | PLUSPLUS
492 { $$ = PREINCREMENT_EXPR; }
493 | MINUSMINUS
494 { $$ = PREDECREMENT_EXPR; }
495 | '~'
496 { $$ = BIT_NOT_EXPR; }
497 | '!'
498 { $$ = TRUTH_NOT_EXPR; }
499 ;
501 expr: nonnull_exprlist
502 { $$ = build_compound_expr ($1); }
503 ;
505 exprlist:
506 /* empty */
507 { $$ = NULL_TREE; }
508 | nonnull_exprlist
509 ;
511 nonnull_exprlist:
512 expr_no_commas
513 { $$ = build_tree_list (NULL_TREE, $1); }
514 | nonnull_exprlist ',' expr_no_commas
515 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
516 ;
518 unary_expr:
519 primary
520 | '*' cast_expr %prec UNARY
521 { $$ = build_indirect_ref ($2, "unary *"); }
522 /* __extension__ turns off -pedantic for following primary. */
523 | extension cast_expr %prec UNARY
524 { $$ = $2;
525 RESTORE_WARN_FLAGS ($1); }
526 | unop cast_expr %prec UNARY
527 { $$ = build_unary_op ($1, $2, 0);
528 overflow_warning ($$); }
529 /* Refer to the address of a label as a pointer. */
530 | ANDAND identifier
531 { $$ = finish_label_address_expr ($2); }
532 /* This seems to be impossible on some machines, so let's turn it off.
533 You can use __builtin_next_arg to find the anonymous stack args.
534 | '&' ELLIPSIS
535 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
536 $$ = error_mark_node;
537 if (TREE_VALUE (tree_last (types)) == void_type_node)
538 error ("`&...' used in function with fixed number of arguments");
539 else
540 {
541 if (pedantic)
542 pedwarn ("ISO C forbids `&...'");
543 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
544 $$ = build_unary_op (ADDR_EXPR, $$, 0);
545 } }
546 */
547 | sizeof unary_expr %prec UNARY
548 { skip_evaluation--;
549 if (TREE_CODE ($2) == COMPONENT_REF
550 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
551 error ("`sizeof' applied to a bit-field");
552 $$ = c_sizeof (TREE_TYPE ($2)); }
553 | sizeof '(' typename ')' %prec HYPERUNARY
554 { skip_evaluation--;
555 $$ = c_sizeof (groktypename ($3)); }
556 | alignof unary_expr %prec UNARY
557 { skip_evaluation--;
558 $$ = c_alignof_expr ($2); }
559 | alignof '(' typename ')' %prec HYPERUNARY
560 { skip_evaluation--;
561 $$ = c_alignof (groktypename ($3)); }
562 | REALPART cast_expr %prec UNARY
563 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
564 | IMAGPART cast_expr %prec UNARY
565 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
566 ;
568 sizeof:
569 SIZEOF { skip_evaluation++; }
570 ;
572 alignof:
573 ALIGNOF { skip_evaluation++; }
574 ;
576 cast_expr:
577 unary_expr
578 | '(' typename ')' cast_expr %prec UNARY
579 { $$ = c_cast_expr ($2, $4); }
580 ;
582 expr_no_commas:
583 cast_expr
584 | expr_no_commas '+' expr_no_commas
585 { $$ = parser_build_binary_op ($2, $1, $3); }
586 | expr_no_commas '-' expr_no_commas
587 { $$ = parser_build_binary_op ($2, $1, $3); }
588 | expr_no_commas '*' expr_no_commas
589 { $$ = parser_build_binary_op ($2, $1, $3); }
590 | expr_no_commas '/' expr_no_commas
591 { $$ = parser_build_binary_op ($2, $1, $3); }
592 | expr_no_commas '%' expr_no_commas
593 { $$ = parser_build_binary_op ($2, $1, $3); }
594 | expr_no_commas LSHIFT expr_no_commas
595 { $$ = parser_build_binary_op ($2, $1, $3); }
596 | expr_no_commas RSHIFT expr_no_commas
597 { $$ = parser_build_binary_op ($2, $1, $3); }
598 | expr_no_commas ARITHCOMPARE expr_no_commas
599 { $$ = parser_build_binary_op ($2, $1, $3); }
600 | expr_no_commas EQCOMPARE expr_no_commas
601 { $$ = parser_build_binary_op ($2, $1, $3); }
602 | expr_no_commas '&' expr_no_commas
603 { $$ = parser_build_binary_op ($2, $1, $3); }
604 | expr_no_commas '|' expr_no_commas
605 { $$ = parser_build_binary_op ($2, $1, $3); }
606 | expr_no_commas '^' expr_no_commas
607 { $$ = parser_build_binary_op ($2, $1, $3); }
608 | expr_no_commas ANDAND
609 { $1 = c_common_truthvalue_conversion
610 (default_conversion ($1));
611 skip_evaluation += $1 == boolean_false_node; }
612 expr_no_commas
613 { skip_evaluation -= $1 == boolean_false_node;
614 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
615 | expr_no_commas OROR
616 { $1 = c_common_truthvalue_conversion
617 (default_conversion ($1));
618 skip_evaluation += $1 == boolean_true_node; }
619 expr_no_commas
620 { skip_evaluation -= $1 == boolean_true_node;
621 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
622 | expr_no_commas '?'
623 { $1 = c_common_truthvalue_conversion
624 (default_conversion ($1));
625 skip_evaluation += $1 == boolean_false_node; }
626 expr ':'
627 { skip_evaluation += (($1 == boolean_true_node)
628 - ($1 == boolean_false_node)); }
629 expr_no_commas
630 { skip_evaluation -= $1 == boolean_true_node;
631 $$ = build_conditional_expr ($1, $4, $7); }
632 | expr_no_commas '?'
633 { if (pedantic)
634 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
635 /* Make sure first operand is calculated only once. */
636 $<ttype>2 = save_expr ($1);
637 $1 = c_common_truthvalue_conversion
638 (default_conversion ($<ttype>2));
639 skip_evaluation += $1 == boolean_true_node; }
640 ':' expr_no_commas
641 { skip_evaluation -= $1 == boolean_true_node;
642 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
643 | expr_no_commas '=' expr_no_commas
644 { char class;
645 $$ = build_modify_expr ($1, NOP_EXPR, $3);
646 class = TREE_CODE_CLASS (TREE_CODE ($$));
647 if (IS_EXPR_CODE_CLASS (class))
648 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
649 }
650 | expr_no_commas ASSIGN expr_no_commas
651 { char class;
652 $$ = build_modify_expr ($1, $2, $3);
653 /* This inhibits warnings in
654 c_common_truthvalue_conversion. */
655 class = TREE_CODE_CLASS (TREE_CODE ($$));
656 if (IS_EXPR_CODE_CLASS (class))
657 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
658 }
659 ;
661 primary:
662 IDENTIFIER
663 {
664 if (yychar == YYEMPTY)
665 yychar = YYLEX;
666 $$ = build_external_ref ($1, yychar == '(');
667 }
668 | CONSTANT
669 | STRING
670 { $$ = fix_string_type ($$); }
671 | VAR_FUNC_NAME
672 { $$ = fname_decl (C_RID_CODE ($$), $$); }
673 | '(' typename ')' '{'
674 { start_init (NULL_TREE, NULL, 0);
675 $2 = groktypename ($2);
676 really_start_incremental_init ($2); }
677 initlist_maybe_comma '}' %prec UNARY
678 { tree constructor = pop_init_level (0);
679 tree type = $2;
680 finish_init ();
682 if (pedantic && ! flag_isoc99)
683 pedwarn ("ISO C89 forbids compound literals");
684 $$ = build_compound_literal (type, constructor);
685 }
686 | '(' expr ')'
687 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
688 if (IS_EXPR_CODE_CLASS (class))
689 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
690 $$ = $2; }
691 | '(' error ')'
692 { $$ = error_mark_node; }
693 | compstmt_primary_start compstmt_nostart ')'
694 { tree saved_last_tree;
696 if (pedantic)
697 pedwarn ("ISO C forbids braced-groups within expressions");
698 pop_label_level ();
700 saved_last_tree = COMPOUND_BODY ($1);
701 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
702 last_tree = saved_last_tree;
703 TREE_CHAIN (last_tree) = NULL_TREE;
704 if (!last_expr_type)
705 last_expr_type = void_type_node;
706 $$ = build1 (STMT_EXPR, last_expr_type, $1);
707 TREE_SIDE_EFFECTS ($$) = 1;
708 }
709 | compstmt_primary_start error ')'
710 {
711 pop_label_level ();
712 last_tree = COMPOUND_BODY ($1);
713 TREE_CHAIN (last_tree) = NULL_TREE;
714 $$ = error_mark_node;
715 }
716 | primary '(' exprlist ')' %prec '.'
717 { $$ = build_function_call ($1, $3); }
718 | VA_ARG '(' expr_no_commas ',' typename ')'
719 { $$ = build_va_arg ($3, groktypename ($5)); }
721 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
722 {
723 tree c;
725 c = fold ($3);
726 STRIP_NOPS (c);
727 if (TREE_CODE (c) != INTEGER_CST)
728 error ("first argument to __builtin_choose_expr not a constant");
729 $$ = integer_zerop (c) ? $7 : $5;
730 }
731 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
732 {
733 tree e1, e2;
735 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
736 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
738 $$ = comptypes (e1, e2)
739 ? build_int_2 (1, 0) : build_int_2 (0, 0);
740 }
741 | primary '[' expr ']' %prec '.'
742 { $$ = build_array_ref ($1, $3); }
743 | primary '.' identifier
744 {
745 ifobjc
746 if (!is_public ($1, $3))
747 $$ = error_mark_node;
748 else
749 end ifobjc
750 $$ = build_component_ref ($1, $3);
751 }
752 | primary POINTSAT identifier
753 {
754 tree expr = build_indirect_ref ($1, "->");
756 ifobjc
757 if (!is_public (expr, $3))
758 $$ = error_mark_node;
759 else
760 end ifobjc
761 $$ = build_component_ref (expr, $3);
762 }
763 | primary PLUSPLUS
764 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
765 | primary MINUSMINUS
766 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
767 ifobjc
768 | objcmessageexpr
769 { $$ = build_message_expr ($1); }
770 | objcselectorexpr
771 { $$ = build_selector_expr ($1); }
772 | objcprotocolexpr
773 { $$ = build_protocol_expr ($1); }
774 | objcencodeexpr
775 { $$ = build_encode_expr ($1); }
776 | objc_string
777 { $$ = build_objc_string_object ($1); }
778 end ifobjc
779 ;
781 ifobjc
782 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
783 onto it, which is to be read as an ObjC string object. */
784 objc_string:
785 '@' STRING
786 { $$ = $2; }
787 | objc_string '@' STRING
788 { $$ = chainon ($1, $3); }
789 ;
790 end ifobjc
792 old_style_parm_decls:
793 /* empty */
794 | datadecls
795 | datadecls ELLIPSIS
796 /* ... is used here to indicate a varargs function. */
797 { c_mark_varargs ();
798 if (pedantic)
799 pedwarn ("ISO C does not permit use of `varargs.h'"); }
800 ;
802 /* The following are analogous to lineno_decl, decls and decl
803 except that they do not allow nested functions.
804 They are used for old-style parm decls. */
805 lineno_datadecl:
806 save_filename save_lineno datadecl
807 { }
808 ;
810 datadecls:
811 lineno_datadecl
812 | errstmt
813 | datadecls lineno_datadecl
814 | lineno_datadecl errstmt
815 ;
817 /* We don't allow prefix attributes here because they cause reduce/reduce
818 conflicts: we can't know whether we're parsing a function decl with
819 attribute suffix, or function defn with attribute prefix on first old
820 style parm. */
821 datadecl:
822 declspecs_ts_nosa setspecs initdecls ';'
823 { POP_DECLSPEC_STACK; }
824 | declspecs_nots_nosa setspecs notype_initdecls ';'
825 { POP_DECLSPEC_STACK; }
826 | declspecs_ts_nosa ';'
827 { shadow_tag_warned ($1, 1);
828 pedwarn ("empty declaration"); }
829 | declspecs_nots_nosa ';'
830 { pedwarn ("empty declaration"); }
831 ;
833 /* This combination which saves a lineno before a decl
834 is the normal thing to use, rather than decl itself.
835 This is to avoid shift/reduce conflicts in contexts
836 where statement labels are allowed. */
837 lineno_decl:
838 save_filename save_lineno decl
839 { }
840 ;
842 /* records the type and storage class specs to use for processing
843 the declarators that follow.
844 Maintains a stack of outer-level values of current_declspecs,
845 for the sake of parm declarations nested in function declarators. */
846 setspecs: /* empty */
847 { pending_xref_error ();
848 PUSH_DECLSPEC_STACK;
849 split_specs_attrs ($<ttype>0,
850 ¤t_declspecs, &prefix_attributes);
851 all_prefix_attributes = prefix_attributes; }
852 ;
854 /* Possibly attributes after a comma, which should reset all_prefix_attributes
855 to prefix_attributes with these ones chained on the front. */
856 maybe_resetattrs:
857 maybe_attribute
858 { all_prefix_attributes = chainon ($1, prefix_attributes); }
859 ;
861 decl:
862 declspecs_ts setspecs initdecls ';'
863 { POP_DECLSPEC_STACK; }
864 | declspecs_nots setspecs notype_initdecls ';'
865 { POP_DECLSPEC_STACK; }
866 | declspecs_ts setspecs nested_function
867 { POP_DECLSPEC_STACK; }
868 | declspecs_nots setspecs notype_nested_function
869 { POP_DECLSPEC_STACK; }
870 | declspecs ';'
871 { shadow_tag ($1); }
872 | extension decl
873 { RESTORE_WARN_FLAGS ($1); }
874 ;
876 /* A list of declaration specifiers. These are:
878 - Storage class specifiers (scspec), which for GCC currently includes
879 function specifiers ("inline").
881 - Type specifiers (typespec_*).
883 - Type qualifiers (TYPE_QUAL).
885 - Attribute specifier lists (attributes).
887 These are stored as a TREE_LIST; the head of the list is the last
888 item in the specifier list. Each entry in the list has either a
889 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
890 is a single other specifier or qualifier; and a TREE_CHAIN that is the
891 rest of the list. TREE_STATIC is set on the list if something other
892 than a storage class specifier or attribute has been seen; this is used
893 to warn for the obsolescent usage of storage class specifiers other than
894 at the start of the list. (Doing this properly would require function
895 specifiers to be handled separately from storage class specifiers.)
897 The various cases below are classified according to:
899 (a) Whether a storage class specifier is included or not; some
900 places in the grammar disallow storage class specifiers (_sc or _nosc).
902 (b) Whether a type specifier has been seen; after a type specifier,
903 a typedef name is an identifier to redeclare (_ts or _nots).
905 (c) Whether the list starts with an attribute; in certain places,
906 the grammar requires specifiers that don't start with an attribute
907 (_sa or _nosa).
909 (d) Whether the list ends with an attribute (or a specifier such that
910 any following attribute would have been parsed as part of that specifier);
911 this avoids shift-reduce conflicts in the parsing of attributes
912 (_ea or _noea).
914 TODO:
916 (i) Distinguish between function specifiers and storage class specifiers,
917 at least for the purpose of warnings about obsolescent usage.
919 (ii) Halve the number of productions here by eliminating the _sc/_nosc
920 distinction and instead checking where required that storage class
921 specifiers aren't present. */
923 /* Declspecs which contain at least one type specifier or typedef name.
924 (Just `const' or `volatile' is not enough.)
925 A typedef'd name following these is taken as a name to be declared.
926 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
928 declspecs_nosc_nots_nosa_noea:
929 TYPE_QUAL
930 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
931 TREE_STATIC ($$) = 1; }
932 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
933 { $$ = tree_cons (NULL_TREE, $2, $1);
934 TREE_STATIC ($$) = 1; }
935 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
936 { $$ = tree_cons (NULL_TREE, $2, $1);
937 TREE_STATIC ($$) = 1; }
938 ;
940 declspecs_nosc_nots_nosa_ea:
941 declspecs_nosc_nots_nosa_noea attributes
942 { $$ = tree_cons ($2, NULL_TREE, $1);
943 TREE_STATIC ($$) = TREE_STATIC ($1); }
944 ;
946 declspecs_nosc_nots_sa_noea:
947 declspecs_nosc_nots_sa_noea TYPE_QUAL
948 { $$ = tree_cons (NULL_TREE, $2, $1);
949 TREE_STATIC ($$) = 1; }
950 | declspecs_nosc_nots_sa_ea TYPE_QUAL
951 { $$ = tree_cons (NULL_TREE, $2, $1);
952 TREE_STATIC ($$) = 1; }
953 ;
955 declspecs_nosc_nots_sa_ea:
956 attributes
957 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
958 TREE_STATIC ($$) = 0; }
959 | declspecs_nosc_nots_sa_noea attributes
960 { $$ = tree_cons ($2, NULL_TREE, $1);
961 TREE_STATIC ($$) = TREE_STATIC ($1); }
962 ;
964 declspecs_nosc_ts_nosa_noea:
965 typespec_nonattr
966 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
967 TREE_STATIC ($$) = 1; }
968 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
969 { $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = 1; }
971 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
972 { $$ = tree_cons (NULL_TREE, $2, $1);
973 TREE_STATIC ($$) = 1; }
974 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
975 { $$ = tree_cons (NULL_TREE, $2, $1);
976 TREE_STATIC ($$) = 1; }
977 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
978 { $$ = tree_cons (NULL_TREE, $2, $1);
979 TREE_STATIC ($$) = 1; }
980 | declspecs_nosc_nots_nosa_noea typespec_nonattr
981 { $$ = tree_cons (NULL_TREE, $2, $1);
982 TREE_STATIC ($$) = 1; }
983 | declspecs_nosc_nots_nosa_ea typespec_nonattr
984 { $$ = tree_cons (NULL_TREE, $2, $1);
985 TREE_STATIC ($$) = 1; }
986 ;
988 declspecs_nosc_ts_nosa_ea:
989 typespec_attr
990 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
991 TREE_STATIC ($$) = 1; }
992 | declspecs_nosc_ts_nosa_noea attributes
993 { $$ = tree_cons ($2, NULL_TREE, $1);
994 TREE_STATIC ($$) = TREE_STATIC ($1); }
995 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
996 { $$ = tree_cons (NULL_TREE, $2, $1);
997 TREE_STATIC ($$) = 1; }
998 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
999 { $$ = tree_cons (NULL_TREE, $2, $1);
1000 TREE_STATIC ($$) = 1; }
1001 | declspecs_nosc_nots_nosa_noea typespec_attr
1002 { $$ = tree_cons (NULL_TREE, $2, $1);
1003 TREE_STATIC ($$) = 1; }
1004 | declspecs_nosc_nots_nosa_ea typespec_attr
1005 { $$ = tree_cons (NULL_TREE, $2, $1);
1006 TREE_STATIC ($$) = 1; }
1007 ;
1009 declspecs_nosc_ts_sa_noea:
1010 declspecs_nosc_ts_sa_noea TYPE_QUAL
1011 { $$ = tree_cons (NULL_TREE, $2, $1);
1012 TREE_STATIC ($$) = 1; }
1013 | declspecs_nosc_ts_sa_ea TYPE_QUAL
1014 { $$ = tree_cons (NULL_TREE, $2, $1);
1015 TREE_STATIC ($$) = 1; }
1016 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
1017 { $$ = tree_cons (NULL_TREE, $2, $1);
1018 TREE_STATIC ($$) = 1; }
1019 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
1020 { $$ = tree_cons (NULL_TREE, $2, $1);
1021 TREE_STATIC ($$) = 1; }
1022 | declspecs_nosc_nots_sa_noea typespec_nonattr
1023 { $$ = tree_cons (NULL_TREE, $2, $1);
1024 TREE_STATIC ($$) = 1; }
1025 | declspecs_nosc_nots_sa_ea typespec_nonattr
1026 { $$ = tree_cons (NULL_TREE, $2, $1);
1027 TREE_STATIC ($$) = 1; }
1028 ;
1030 declspecs_nosc_ts_sa_ea:
1031 declspecs_nosc_ts_sa_noea attributes
1032 { $$ = tree_cons ($2, NULL_TREE, $1);
1033 TREE_STATIC ($$) = TREE_STATIC ($1); }
1034 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1035 { $$ = tree_cons (NULL_TREE, $2, $1);
1036 TREE_STATIC ($$) = 1; }
1037 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1038 { $$ = tree_cons (NULL_TREE, $2, $1);
1039 TREE_STATIC ($$) = 1; }
1040 | declspecs_nosc_nots_sa_noea typespec_attr
1041 { $$ = tree_cons (NULL_TREE, $2, $1);
1042 TREE_STATIC ($$) = 1; }
1043 | declspecs_nosc_nots_sa_ea typespec_attr
1044 { $$ = tree_cons (NULL_TREE, $2, $1);
1045 TREE_STATIC ($$) = 1; }
1046 ;
1048 declspecs_sc_nots_nosa_noea:
1049 scspec
1050 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1051 TREE_STATIC ($$) = 0; }
1052 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1053 { $$ = tree_cons (NULL_TREE, $2, $1);
1054 TREE_STATIC ($$) = 1; }
1055 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1056 { $$ = tree_cons (NULL_TREE, $2, $1);
1057 TREE_STATIC ($$) = 1; }
1058 | declspecs_nosc_nots_nosa_noea scspec
1059 { if (extra_warnings && TREE_STATIC ($1))
1060 warning ("`%s' is not at beginning of declaration",
1061 IDENTIFIER_POINTER ($2));
1062 $$ = tree_cons (NULL_TREE, $2, $1);
1063 TREE_STATIC ($$) = TREE_STATIC ($1); }
1064 | declspecs_nosc_nots_nosa_ea scspec
1065 { if (extra_warnings && TREE_STATIC ($1))
1066 warning ("`%s' is not at beginning of declaration",
1067 IDENTIFIER_POINTER ($2));
1068 $$ = tree_cons (NULL_TREE, $2, $1);
1069 TREE_STATIC ($$) = TREE_STATIC ($1); }
1070 | declspecs_sc_nots_nosa_noea scspec
1071 { if (extra_warnings && TREE_STATIC ($1))
1072 warning ("`%s' is not at beginning of declaration",
1073 IDENTIFIER_POINTER ($2));
1074 $$ = tree_cons (NULL_TREE, $2, $1);
1075 TREE_STATIC ($$) = TREE_STATIC ($1); }
1076 | declspecs_sc_nots_nosa_ea scspec
1077 { if (extra_warnings && TREE_STATIC ($1))
1078 warning ("`%s' is not at beginning of declaration",
1079 IDENTIFIER_POINTER ($2));
1080 $$ = tree_cons (NULL_TREE, $2, $1);
1081 TREE_STATIC ($$) = TREE_STATIC ($1); }
1082 ;
1084 declspecs_sc_nots_nosa_ea:
1085 declspecs_sc_nots_nosa_noea attributes
1086 { $$ = tree_cons ($2, NULL_TREE, $1);
1087 TREE_STATIC ($$) = TREE_STATIC ($1); }
1088 ;
1090 declspecs_sc_nots_sa_noea:
1091 declspecs_sc_nots_sa_noea TYPE_QUAL
1092 { $$ = tree_cons (NULL_TREE, $2, $1);
1093 TREE_STATIC ($$) = 1; }
1094 | declspecs_sc_nots_sa_ea TYPE_QUAL
1095 { $$ = tree_cons (NULL_TREE, $2, $1);
1096 TREE_STATIC ($$) = 1; }
1097 | declspecs_nosc_nots_sa_noea scspec
1098 { if (extra_warnings && TREE_STATIC ($1))
1099 warning ("`%s' is not at beginning of declaration",
1100 IDENTIFIER_POINTER ($2));
1101 $$ = tree_cons (NULL_TREE, $2, $1);
1102 TREE_STATIC ($$) = TREE_STATIC ($1); }
1103 | declspecs_nosc_nots_sa_ea scspec
1104 { if (extra_warnings && TREE_STATIC ($1))
1105 warning ("`%s' is not at beginning of declaration",
1106 IDENTIFIER_POINTER ($2));
1107 $$ = tree_cons (NULL_TREE, $2, $1);
1108 TREE_STATIC ($$) = TREE_STATIC ($1); }
1109 | declspecs_sc_nots_sa_noea scspec
1110 { if (extra_warnings && TREE_STATIC ($1))
1111 warning ("`%s' is not at beginning of declaration",
1112 IDENTIFIER_POINTER ($2));
1113 $$ = tree_cons (NULL_TREE, $2, $1);
1114 TREE_STATIC ($$) = TREE_STATIC ($1); }
1115 | declspecs_sc_nots_sa_ea scspec
1116 { if (extra_warnings && TREE_STATIC ($1))
1117 warning ("`%s' is not at beginning of declaration",
1118 IDENTIFIER_POINTER ($2));
1119 $$ = tree_cons (NULL_TREE, $2, $1);
1120 TREE_STATIC ($$) = TREE_STATIC ($1); }
1121 ;
1123 declspecs_sc_nots_sa_ea:
1124 declspecs_sc_nots_sa_noea attributes
1125 { $$ = tree_cons ($2, NULL_TREE, $1);
1126 TREE_STATIC ($$) = TREE_STATIC ($1); }
1127 ;
1129 declspecs_sc_ts_nosa_noea:
1130 declspecs_sc_ts_nosa_noea TYPE_QUAL
1131 { $$ = tree_cons (NULL_TREE, $2, $1);
1132 TREE_STATIC ($$) = 1; }
1133 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1134 { $$ = tree_cons (NULL_TREE, $2, $1);
1135 TREE_STATIC ($$) = 1; }
1136 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1137 { $$ = tree_cons (NULL_TREE, $2, $1);
1138 TREE_STATIC ($$) = 1; }
1139 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1140 { $$ = tree_cons (NULL_TREE, $2, $1);
1141 TREE_STATIC ($$) = 1; }
1142 | declspecs_sc_nots_nosa_noea typespec_nonattr
1143 { $$ = tree_cons (NULL_TREE, $2, $1);
1144 TREE_STATIC ($$) = 1; }
1145 | declspecs_sc_nots_nosa_ea typespec_nonattr
1146 { $$ = tree_cons (NULL_TREE, $2, $1);
1147 TREE_STATIC ($$) = 1; }
1148 | declspecs_nosc_ts_nosa_noea scspec
1149 { if (extra_warnings && TREE_STATIC ($1))
1150 warning ("`%s' is not at beginning of declaration",
1151 IDENTIFIER_POINTER ($2));
1152 $$ = tree_cons (NULL_TREE, $2, $1);
1153 TREE_STATIC ($$) = TREE_STATIC ($1); }
1154 | declspecs_nosc_ts_nosa_ea scspec
1155 { if (extra_warnings && TREE_STATIC ($1))
1156 warning ("`%s' is not at beginning of declaration",
1157 IDENTIFIER_POINTER ($2));
1158 $$ = tree_cons (NULL_TREE, $2, $1);
1159 TREE_STATIC ($$) = TREE_STATIC ($1); }
1160 | declspecs_sc_ts_nosa_noea scspec
1161 { if (extra_warnings && TREE_STATIC ($1))
1162 warning ("`%s' is not at beginning of declaration",
1163 IDENTIFIER_POINTER ($2));
1164 $$ = tree_cons (NULL_TREE, $2, $1);
1165 TREE_STATIC ($$) = TREE_STATIC ($1); }
1166 | declspecs_sc_ts_nosa_ea scspec
1167 { if (extra_warnings && TREE_STATIC ($1))
1168 warning ("`%s' is not at beginning of declaration",
1169 IDENTIFIER_POINTER ($2));
1170 $$ = tree_cons (NULL_TREE, $2, $1);
1171 TREE_STATIC ($$) = TREE_STATIC ($1); }
1172 ;
1174 declspecs_sc_ts_nosa_ea:
1175 declspecs_sc_ts_nosa_noea attributes
1176 { $$ = tree_cons ($2, NULL_TREE, $1);
1177 TREE_STATIC ($$) = TREE_STATIC ($1); }
1178 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1179 { $$ = tree_cons (NULL_TREE, $2, $1);
1180 TREE_STATIC ($$) = 1; }
1181 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1182 { $$ = tree_cons (NULL_TREE, $2, $1);
1183 TREE_STATIC ($$) = 1; }
1184 | declspecs_sc_nots_nosa_noea typespec_attr
1185 { $$ = tree_cons (NULL_TREE, $2, $1);
1186 TREE_STATIC ($$) = 1; }
1187 | declspecs_sc_nots_nosa_ea typespec_attr
1188 { $$ = tree_cons (NULL_TREE, $2, $1);
1189 TREE_STATIC ($$) = 1; }
1190 ;
1192 declspecs_sc_ts_sa_noea:
1193 declspecs_sc_ts_sa_noea TYPE_QUAL
1194 { $$ = tree_cons (NULL_TREE, $2, $1);
1195 TREE_STATIC ($$) = 1; }
1196 | declspecs_sc_ts_sa_ea TYPE_QUAL
1197 { $$ = tree_cons (NULL_TREE, $2, $1);
1198 TREE_STATIC ($$) = 1; }
1199 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1200 { $$ = tree_cons (NULL_TREE, $2, $1);
1201 TREE_STATIC ($$) = 1; }
1202 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1203 { $$ = tree_cons (NULL_TREE, $2, $1);
1204 TREE_STATIC ($$) = 1; }
1205 | declspecs_sc_nots_sa_noea typespec_nonattr
1206 { $$ = tree_cons (NULL_TREE, $2, $1);
1207 TREE_STATIC ($$) = 1; }
1208 | declspecs_sc_nots_sa_ea typespec_nonattr
1209 { $$ = tree_cons (NULL_TREE, $2, $1);
1210 TREE_STATIC ($$) = 1; }
1211 | declspecs_nosc_ts_sa_noea scspec
1212 { if (extra_warnings && TREE_STATIC ($1))
1213 warning ("`%s' is not at beginning of declaration",
1214 IDENTIFIER_POINTER ($2));
1215 $$ = tree_cons (NULL_TREE, $2, $1);
1216 TREE_STATIC ($$) = TREE_STATIC ($1); }
1217 | declspecs_nosc_ts_sa_ea scspec
1218 { if (extra_warnings && TREE_STATIC ($1))
1219 warning ("`%s' is not at beginning of declaration",
1220 IDENTIFIER_POINTER ($2));
1221 $$ = tree_cons (NULL_TREE, $2, $1);
1222 TREE_STATIC ($$) = TREE_STATIC ($1); }
1223 | declspecs_sc_ts_sa_noea scspec
1224 { if (extra_warnings && TREE_STATIC ($1))
1225 warning ("`%s' is not at beginning of declaration",
1226 IDENTIFIER_POINTER ($2));
1227 $$ = tree_cons (NULL_TREE, $2, $1);
1228 TREE_STATIC ($$) = TREE_STATIC ($1); }
1229 | declspecs_sc_ts_sa_ea scspec
1230 { if (extra_warnings && TREE_STATIC ($1))
1231 warning ("`%s' is not at beginning of declaration",
1232 IDENTIFIER_POINTER ($2));
1233 $$ = tree_cons (NULL_TREE, $2, $1);
1234 TREE_STATIC ($$) = TREE_STATIC ($1); }
1235 ;
1237 declspecs_sc_ts_sa_ea:
1238 declspecs_sc_ts_sa_noea attributes
1239 { $$ = tree_cons ($2, NULL_TREE, $1);
1240 TREE_STATIC ($$) = TREE_STATIC ($1); }
1241 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1242 { $$ = tree_cons (NULL_TREE, $2, $1);
1243 TREE_STATIC ($$) = 1; }
1244 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1245 { $$ = tree_cons (NULL_TREE, $2, $1);
1246 TREE_STATIC ($$) = 1; }
1247 | declspecs_sc_nots_sa_noea typespec_attr
1248 { $$ = tree_cons (NULL_TREE, $2, $1);
1249 TREE_STATIC ($$) = 1; }
1250 | declspecs_sc_nots_sa_ea typespec_attr
1251 { $$ = tree_cons (NULL_TREE, $2, $1);
1252 TREE_STATIC ($$) = 1; }
1253 ;
1255 /* Particular useful classes of declspecs. */
1256 declspecs_ts:
1257 declspecs_nosc_ts_nosa_noea
1258 | declspecs_nosc_ts_nosa_ea
1259 | declspecs_nosc_ts_sa_noea
1260 | declspecs_nosc_ts_sa_ea
1261 | declspecs_sc_ts_nosa_noea
1262 | declspecs_sc_ts_nosa_ea
1263 | declspecs_sc_ts_sa_noea
1264 | declspecs_sc_ts_sa_ea
1265 ;
1267 declspecs_nots:
1268 declspecs_nosc_nots_nosa_noea
1269 | declspecs_nosc_nots_nosa_ea
1270 | declspecs_nosc_nots_sa_noea
1271 | declspecs_nosc_nots_sa_ea
1272 | declspecs_sc_nots_nosa_noea
1273 | declspecs_sc_nots_nosa_ea
1274 | declspecs_sc_nots_sa_noea
1275 | declspecs_sc_nots_sa_ea
1276 ;
1278 declspecs_ts_nosa:
1279 declspecs_nosc_ts_nosa_noea
1280 | declspecs_nosc_ts_nosa_ea
1281 | declspecs_sc_ts_nosa_noea
1282 | declspecs_sc_ts_nosa_ea
1283 ;
1285 declspecs_nots_nosa:
1286 declspecs_nosc_nots_nosa_noea
1287 | declspecs_nosc_nots_nosa_ea
1288 | declspecs_sc_nots_nosa_noea
1289 | declspecs_sc_nots_nosa_ea
1290 ;
1292 declspecs_nosc_ts:
1293 declspecs_nosc_ts_nosa_noea
1294 | declspecs_nosc_ts_nosa_ea
1295 | declspecs_nosc_ts_sa_noea
1296 | declspecs_nosc_ts_sa_ea
1297 ;
1299 declspecs_nosc_nots:
1300 declspecs_nosc_nots_nosa_noea
1301 | declspecs_nosc_nots_nosa_ea
1302 | declspecs_nosc_nots_sa_noea
1303 | declspecs_nosc_nots_sa_ea
1304 ;
1306 declspecs_nosc:
1307 declspecs_nosc_ts_nosa_noea
1308 | declspecs_nosc_ts_nosa_ea
1309 | declspecs_nosc_ts_sa_noea
1310 | declspecs_nosc_ts_sa_ea
1311 | declspecs_nosc_nots_nosa_noea
1312 | declspecs_nosc_nots_nosa_ea
1313 | declspecs_nosc_nots_sa_noea
1314 | declspecs_nosc_nots_sa_ea
1315 ;
1317 declspecs:
1318 declspecs_nosc_nots_nosa_noea
1319 | declspecs_nosc_nots_nosa_ea
1320 | declspecs_nosc_nots_sa_noea
1321 | declspecs_nosc_nots_sa_ea
1322 | declspecs_nosc_ts_nosa_noea
1323 | declspecs_nosc_ts_nosa_ea
1324 | declspecs_nosc_ts_sa_noea
1325 | declspecs_nosc_ts_sa_ea
1326 | declspecs_sc_nots_nosa_noea
1327 | declspecs_sc_nots_nosa_ea
1328 | declspecs_sc_nots_sa_noea
1329 | declspecs_sc_nots_sa_ea
1330 | declspecs_sc_ts_nosa_noea
1331 | declspecs_sc_ts_nosa_ea
1332 | declspecs_sc_ts_sa_noea
1333 | declspecs_sc_ts_sa_ea
1334 ;
1336 /* A (possibly empty) sequence of type qualifiers and attributes. */
1337 maybe_type_quals_attrs:
1338 /* empty */
1339 { $$ = NULL_TREE; }
1340 | declspecs_nosc_nots
1341 { $$ = $1; }
1342 ;
1344 /* A type specifier (but not a type qualifier).
1345 Once we have seen one of these in a declaration,
1346 if a typedef name appears then it is being redeclared.
1348 The _reserved versions start with a reserved word and may appear anywhere
1349 in the declaration specifiers; the _nonreserved versions may only
1350 appear before any other type specifiers, and after that are (if names)
1351 being redeclared.
1353 FIXME: should the _nonreserved version be restricted to names being
1354 redeclared only? The other entries there relate only the GNU extensions
1355 and Objective C, and are historically parsed thus, and don't make sense
1356 after other type specifiers, but it might be cleaner to count them as
1357 _reserved.
1359 _attr means: specifiers that either end with attributes,
1360 or are such that any following attributes would
1361 be parsed as part of the specifier.
1363 _nonattr: specifiers. */
1365 typespec_nonattr:
1366 typespec_reserved_nonattr
1367 | typespec_nonreserved_nonattr
1368 ;
1370 typespec_attr:
1371 typespec_reserved_attr
1372 ;
1374 typespec_reserved_nonattr:
1375 TYPESPEC
1376 { OBJC_NEED_RAW_IDENTIFIER (1); }
1377 | structsp_nonattr
1378 ;
1380 typespec_reserved_attr:
1381 structsp_attr
1382 ;
1384 typespec_nonreserved_nonattr:
1385 TYPENAME
1386 { /* For a typedef name, record the meaning, not the name.
1387 In case of `foo foo, bar;'. */
1388 $$ = lookup_name ($1); }
1389 ifobjc
1390 | CLASSNAME protocolrefs
1391 { $$ = get_static_reference ($1, $2); }
1392 | OBJECTNAME protocolrefs
1393 { $$ = get_object_reference ($2); }
1395 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1396 - nisse@lysator.liu.se */
1397 | non_empty_protocolrefs
1398 { $$ = get_object_reference ($1); }
1399 end ifobjc
1400 | TYPEOF '(' expr ')'
1401 { $$ = TREE_TYPE ($3); }
1402 | TYPEOF '(' typename ')'
1403 { $$ = groktypename ($3); }
1404 ;
1406 /* typespec_nonreserved_attr does not exist. */
1408 initdecls:
1409 initdcl
1410 | initdecls ',' maybe_resetattrs initdcl
1411 ;
1413 notype_initdecls:
1414 notype_initdcl
1415 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1416 ;
1418 maybeasm:
1419 /* empty */
1420 { $$ = NULL_TREE; }
1421 | ASM_KEYWORD '(' STRING ')'
1422 { $$ = $3; }
1423 ;
1425 initdcl:
1426 declarator maybeasm maybe_attribute '='
1427 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1428 chainon ($3, all_prefix_attributes));
1429 start_init ($<ttype>$, $2, global_bindings_p ()); }
1430 init
1431 /* Note how the declaration of the variable is in effect while its init is parsed! */
1432 { finish_init ();
1433 finish_decl ($<ttype>5, $6, $2); }
1434 | declarator maybeasm maybe_attribute
1435 { tree d = start_decl ($1, current_declspecs, 0,
1436 chainon ($3, all_prefix_attributes));
1437 finish_decl (d, NULL_TREE, $2);
1438 }
1439 ;
1441 notype_initdcl:
1442 notype_declarator maybeasm maybe_attribute '='
1443 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1444 chainon ($3, all_prefix_attributes));
1445 start_init ($<ttype>$, $2, global_bindings_p ()); }
1446 init
1447 /* Note how the declaration of the variable is in effect while its init is parsed! */
1448 { finish_init ();
1449 finish_decl ($<ttype>5, $6, $2); }
1450 | notype_declarator maybeasm maybe_attribute
1451 { tree d = start_decl ($1, current_declspecs, 0,
1452 chainon ($3, all_prefix_attributes));
1453 finish_decl (d, NULL_TREE, $2); }
1454 ;
1455 /* the * rules are dummies to accept the Apollo extended syntax
1456 so that the header files compile. */
1457 maybe_attribute:
1458 /* empty */
1459 { $$ = NULL_TREE; }
1460 | attributes
1461 { $$ = $1; }
1462 ;
1464 attributes:
1465 attribute
1466 { $$ = $1; }
1467 | attributes attribute
1468 { $$ = chainon ($1, $2); }
1469 ;
1471 attribute:
1472 ATTRIBUTE '(' '(' attribute_list ')' ')'
1473 { $$ = $4; }
1474 ;
1476 attribute_list:
1477 attrib
1478 { $$ = $1; }
1479 | attribute_list ',' attrib
1480 { $$ = chainon ($1, $3); }
1481 ;
1483 attrib:
1484 /* empty */
1485 { $$ = NULL_TREE; }
1486 | any_word
1487 { $$ = build_tree_list ($1, NULL_TREE); }
1488 | any_word '(' IDENTIFIER ')'
1489 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1490 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1491 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1492 | any_word '(' exprlist ')'
1493 { $$ = build_tree_list ($1, $3); }
1494 ;
1496 /* This still leaves out most reserved keywords,
1497 shouldn't we include them? */
1499 any_word:
1500 identifier
1501 | scspec
1502 | TYPESPEC
1503 | TYPE_QUAL
1504 ;
1506 scspec:
1507 STATIC
1508 | SCSPEC
1509 ;
1510 \f
1511 /* Initializers. `init' is the entry point. */
1513 init:
1514 expr_no_commas
1515 | '{'
1516 { really_start_incremental_init (NULL_TREE); }
1517 initlist_maybe_comma '}'
1518 { $$ = pop_init_level (0); }
1519 | error
1520 { $$ = error_mark_node; }
1521 ;
1523 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1524 initlist_maybe_comma:
1525 /* empty */
1526 { if (pedantic)
1527 pedwarn ("ISO C forbids empty initializer braces"); }
1528 | initlist1 maybecomma
1529 ;
1531 initlist1:
1532 initelt
1533 | initlist1 ',' initelt
1534 ;
1536 /* `initelt' is a single element of an initializer.
1537 It may use braces. */
1538 initelt:
1539 designator_list '=' initval
1540 { if (pedantic && ! flag_isoc99)
1541 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1542 | designator initval
1543 { if (pedantic)
1544 pedwarn ("obsolete use of designated initializer without `='"); }
1545 | identifier ':'
1546 { set_init_label ($1);
1547 if (pedantic)
1548 pedwarn ("obsolete use of designated initializer with `:'"); }
1549 initval
1550 | initval
1551 ;
1553 initval:
1554 '{'
1555 { push_init_level (0); }
1556 initlist_maybe_comma '}'
1557 { process_init_element (pop_init_level (0)); }
1558 | expr_no_commas
1559 { process_init_element ($1); }
1560 | error
1561 ;
1563 designator_list:
1564 designator
1565 | designator_list designator
1566 ;
1568 designator:
1569 '.' identifier
1570 { set_init_label ($2); }
1571 /* These are for labeled elements. The syntax for an array element
1572 initializer conflicts with the syntax for an Objective-C message,
1573 so don't include these productions in the Objective-C grammar. */
1574 ifc
1575 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1576 { set_init_index ($2, $4);
1577 if (pedantic)
1578 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1579 | '[' expr_no_commas ']'
1580 { set_init_index ($2, NULL_TREE); }
1581 end ifc
1582 ;
1583 \f
1584 nested_function:
1585 declarator
1586 { if (pedantic)
1587 pedwarn ("ISO C forbids nested functions");
1589 push_function_context ();
1590 if (! start_function (current_declspecs, $1,
1591 all_prefix_attributes))
1592 {
1593 pop_function_context ();
1594 YYERROR1;
1595 }
1596 }
1597 old_style_parm_decls
1598 { store_parm_decls (); }
1599 /* This used to use compstmt_or_error.
1600 That caused a bug with input `f(g) int g {}',
1601 where the use of YYERROR1 above caused an error
1602 which then was handled by compstmt_or_error.
1603 There followed a repeated execution of that same rule,
1604 which called YYERROR1 again, and so on. */
1605 save_filename save_lineno compstmt
1606 { tree decl = current_function_decl;
1607 DECL_SOURCE_FILE (decl) = $5;
1608 DECL_SOURCE_LINE (decl) = $6;
1609 finish_function (1, 1);
1610 pop_function_context ();
1611 add_decl_stmt (decl); }
1612 ;
1614 notype_nested_function:
1615 notype_declarator
1616 { if (pedantic)
1617 pedwarn ("ISO C forbids nested functions");
1619 push_function_context ();
1620 if (! start_function (current_declspecs, $1,
1621 all_prefix_attributes))
1622 {
1623 pop_function_context ();
1624 YYERROR1;
1625 }
1626 }
1627 old_style_parm_decls
1628 { store_parm_decls (); }
1629 /* This used to use compstmt_or_error.
1630 That caused a bug with input `f(g) int g {}',
1631 where the use of YYERROR1 above caused an error
1632 which then was handled by compstmt_or_error.
1633 There followed a repeated execution of that same rule,
1634 which called YYERROR1 again, and so on. */
1635 save_filename save_lineno compstmt
1636 { tree decl = current_function_decl;
1637 DECL_SOURCE_FILE (decl) = $5;
1638 DECL_SOURCE_LINE (decl) = $6;
1639 finish_function (1, 1);
1640 pop_function_context ();
1641 add_decl_stmt (decl); }
1642 ;
1644 /* Any kind of declarator (thus, all declarators allowed
1645 after an explicit typespec). */
1647 declarator:
1648 after_type_declarator
1649 | notype_declarator
1650 ;
1652 /* A declarator that is allowed only after an explicit typespec. */
1654 after_type_declarator:
1655 '(' maybe_attribute after_type_declarator ')'
1656 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1657 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | after_type_declarator '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | after_type_declarator array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1664 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1665 { $$ = make_pointer_declarator ($2, $3); }
1666 | TYPENAME
1667 ifobjc
1668 | OBJECTNAME
1669 end ifobjc
1670 ;
1672 /* Kinds of declarator that can appear in a parameter list
1673 in addition to notype_declarator. This is like after_type_declarator
1674 but does not allow a typedef name in parentheses as an identifier
1675 (because it would conflict with a function with that typedef as arg). */
1676 parm_declarator:
1677 parm_declarator_starttypename
1678 | parm_declarator_nostarttypename
1679 ;
1681 parm_declarator_starttypename:
1682 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1683 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1684 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1685 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1686 poplevel (0, 0, 0); } */
1687 | parm_declarator_starttypename array_declarator %prec '.'
1688 { $$ = set_array_declarator_type ($2, $1, 0); }
1689 | TYPENAME
1690 ifobjc
1691 | OBJECTNAME
1692 end ifobjc
1693 ;
1695 parm_declarator_nostarttypename:
1696 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1697 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1698 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1699 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1700 poplevel (0, 0, 0); } */
1701 | parm_declarator_nostarttypename array_declarator %prec '.'
1702 { $$ = set_array_declarator_type ($2, $1, 0); }
1703 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1704 { $$ = make_pointer_declarator ($2, $3); }
1705 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1706 { $$ = make_pointer_declarator ($2, $3); }
1707 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1708 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1709 ;
1711 /* A declarator allowed whether or not there has been
1712 an explicit typespec. These cannot redeclare a typedef-name. */
1714 notype_declarator:
1715 notype_declarator '(' parmlist_or_identifiers %prec '.'
1716 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1717 /* | notype_declarator '(' error ')' %prec '.'
1718 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1719 poplevel (0, 0, 0); } */
1720 | '(' maybe_attribute notype_declarator ')'
1721 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1722 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1723 { $$ = make_pointer_declarator ($2, $3); }
1724 | notype_declarator array_declarator %prec '.'
1725 { $$ = set_array_declarator_type ($2, $1, 0); }
1726 | IDENTIFIER
1727 ;
1729 struct_head:
1730 STRUCT
1731 { $$ = NULL_TREE; }
1732 | STRUCT attributes
1733 { $$ = $2; }
1734 ;
1736 union_head:
1737 UNION
1738 { $$ = NULL_TREE; }
1739 | UNION attributes
1740 { $$ = $2; }
1741 ;
1743 enum_head:
1744 ENUM
1745 { $$ = NULL_TREE; }
1746 | ENUM attributes
1747 { $$ = $2; }
1748 ;
1750 /* structsp_attr: struct/union/enum specifiers that either
1751 end with attributes, or are such that any following attributes would
1752 be parsed as part of the struct/union/enum specifier.
1754 structsp_nonattr: other struct/union/enum specifiers. */
1756 structsp_attr:
1757 struct_head identifier '{'
1758 { $$ = start_struct (RECORD_TYPE, $2);
1759 /* Start scope of tag before parsing components. */
1760 }
1761 component_decl_list '}' maybe_attribute
1762 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1763 | struct_head '{' component_decl_list '}' maybe_attribute
1764 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1765 $3, chainon ($1, $5));
1766 }
1767 | union_head identifier '{'
1768 { $$ = start_struct (UNION_TYPE, $2); }
1769 component_decl_list '}' maybe_attribute
1770 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1771 | union_head '{' component_decl_list '}' maybe_attribute
1772 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1773 $3, chainon ($1, $5));
1774 }
1775 | enum_head identifier '{'
1776 { $$ = start_enum ($2); }
1777 enumlist maybecomma_warn '}' maybe_attribute
1778 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1779 chainon ($1, $8)); }
1780 | enum_head '{'
1781 { $$ = start_enum (NULL_TREE); }
1782 enumlist maybecomma_warn '}' maybe_attribute
1783 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1784 chainon ($1, $7)); }
1785 ;
1787 structsp_nonattr:
1788 struct_head identifier
1789 { $$ = xref_tag (RECORD_TYPE, $2); }
1790 | union_head identifier
1791 { $$ = xref_tag (UNION_TYPE, $2); }
1792 | enum_head identifier
1793 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1794 /* In ISO C, enumerated types can be referred to
1795 only if already defined. */
1796 if (pedantic && !COMPLETE_TYPE_P ($$))
1797 pedwarn ("ISO C forbids forward references to `enum' types"); }
1798 ;
1800 maybecomma:
1801 /* empty */
1802 | ','
1803 ;
1805 maybecomma_warn:
1806 /* empty */
1807 | ','
1808 { if (pedantic && ! flag_isoc99)
1809 pedwarn ("comma at end of enumerator list"); }
1810 ;
1812 component_decl_list:
1813 component_decl_list2
1814 { $$ = $1; }
1815 | component_decl_list2 component_decl
1816 { $$ = chainon ($1, $2);
1817 pedwarn ("no semicolon at end of struct or union"); }
1818 ;
1820 component_decl_list2: /* empty */
1821 { $$ = NULL_TREE; }
1822 | component_decl_list2 component_decl ';'
1823 { $$ = chainon ($1, $2); }
1824 | component_decl_list2 ';'
1825 { if (pedantic)
1826 pedwarn ("extra semicolon in struct or union specified"); }
1827 ifobjc
1828 /* foo(sizeof(struct{ @defs(ClassName)})); */
1829 | DEFS '(' CLASSNAME ')'
1830 {
1831 tree interface = lookup_interface ($3);
1833 if (interface)
1834 $$ = get_class_ivars (interface);
1835 else
1836 {
1837 error ("cannot find interface declaration for `%s'",
1838 IDENTIFIER_POINTER ($3));
1839 $$ = NULL_TREE;
1840 }
1841 }
1842 end ifobjc
1843 ;
1845 component_decl:
1846 declspecs_nosc_ts setspecs components
1847 { $$ = $3;
1848 POP_DECLSPEC_STACK; }
1849 | declspecs_nosc_ts setspecs save_filename save_lineno
1850 {
1851 /* Support for unnamed structs or unions as members of
1852 structs or unions (which is [a] useful and [b] supports
1853 MS P-SDK). */
1854 if (pedantic)
1855 pedwarn ("ISO C doesn't support unnamed structs/unions");
1857 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1858 POP_DECLSPEC_STACK; }
1859 | declspecs_nosc_nots setspecs components_notype
1860 { $$ = $3;
1861 POP_DECLSPEC_STACK; }
1862 | declspecs_nosc_nots
1863 { if (pedantic)
1864 pedwarn ("ISO C forbids member declarations with no members");
1865 shadow_tag($1);
1866 $$ = NULL_TREE; }
1867 | error
1868 { $$ = NULL_TREE; }
1869 | extension component_decl
1870 { $$ = $2;
1871 RESTORE_WARN_FLAGS ($1); }
1872 ;
1874 components:
1875 component_declarator
1876 | components ',' maybe_resetattrs component_declarator
1877 { $$ = chainon ($1, $4); }
1878 ;
1880 components_notype:
1881 component_notype_declarator
1882 | components_notype ',' maybe_resetattrs component_notype_declarator
1883 { $$ = chainon ($1, $4); }
1884 ;
1886 component_declarator:
1887 save_filename save_lineno declarator maybe_attribute
1888 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1889 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1890 | save_filename save_lineno
1891 declarator ':' expr_no_commas maybe_attribute
1892 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1893 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1894 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1895 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1896 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1897 ;
1899 component_notype_declarator:
1900 save_filename save_lineno notype_declarator maybe_attribute
1901 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1902 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1903 | save_filename save_lineno
1904 notype_declarator ':' expr_no_commas maybe_attribute
1905 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1906 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1907 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1908 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1909 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1910 ;
1912 /* We chain the enumerators in reverse order.
1913 They are put in forward order where enumlist is used.
1914 (The order used to be significant, but no longer is so.
1915 However, we still maintain the order, just to be clean.) */
1917 enumlist:
1918 enumerator
1919 | enumlist ',' enumerator
1920 { if ($1 == error_mark_node)
1921 $$ = $1;
1922 else
1923 $$ = chainon ($3, $1); }
1924 | error
1925 { $$ = error_mark_node; }
1926 ;
1929 enumerator:
1930 identifier
1931 { $$ = build_enumerator ($1, NULL_TREE); }
1932 | identifier '=' expr_no_commas
1933 { $$ = build_enumerator ($1, $3); }
1934 ;
1936 typename:
1937 declspecs_nosc
1938 { pending_xref_error ();
1939 $<ttype>$ = $1; }
1940 absdcl
1941 { $$ = build_tree_list ($<ttype>2, $3); }
1942 ;
1944 absdcl: /* an absolute declarator */
1945 /* empty */
1946 { $$ = NULL_TREE; }
1947 | absdcl1
1948 ;
1950 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1951 /* empty */
1952 { $$ = build_tree_list (build_tree_list (current_declspecs,
1953 NULL_TREE),
1954 all_prefix_attributes); }
1955 | absdcl1
1956 { $$ = build_tree_list (build_tree_list (current_declspecs,
1957 $1),
1958 all_prefix_attributes); }
1959 | absdcl1_noea attributes
1960 { $$ = build_tree_list (build_tree_list (current_declspecs,
1961 $1),
1962 chainon ($2, all_prefix_attributes)); }
1963 ;
1965 absdcl1: /* a nonempty absolute declarator */
1966 absdcl1_ea
1967 | absdcl1_noea
1968 ;
1970 absdcl1_noea:
1971 direct_absdcl1
1972 | '*' maybe_type_quals_attrs absdcl1_noea
1973 { $$ = make_pointer_declarator ($2, $3); }
1974 ;
1976 absdcl1_ea:
1977 '*' maybe_type_quals_attrs
1978 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1979 | '*' maybe_type_quals_attrs absdcl1_ea
1980 { $$ = make_pointer_declarator ($2, $3); }
1981 ;
1983 direct_absdcl1:
1984 '(' maybe_attribute absdcl1 ')'
1985 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1986 | direct_absdcl1 '(' parmlist
1987 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1988 | direct_absdcl1 array_declarator
1989 { $$ = set_array_declarator_type ($2, $1, 1); }
1990 | '(' parmlist
1991 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1992 | array_declarator
1993 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1994 ;
1996 /* The [...] part of a declarator for an array type. */
1998 array_declarator:
1999 '[' maybe_type_quals_attrs expr ']'
2000 { $$ = build_array_declarator ($3, $2, 0, 0); }
2001 | '[' maybe_type_quals_attrs ']'
2002 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
2003 | '[' maybe_type_quals_attrs '*' ']'
2004 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
2005 | '[' STATIC maybe_type_quals_attrs expr ']'
2006 { $$ = build_array_declarator ($4, $3, 1, 0); }
2007 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
2008 | '[' declspecs_nosc_nots STATIC expr ']'
2009 { $$ = build_array_declarator ($4, $2, 1, 0); }
2010 ;
2012 /* A nonempty series of declarations and statements (possibly followed by
2013 some labels) that can form the body of a compound statement.
2014 NOTE: we don't allow labels on declarations; this might seem like a
2015 natural extension, but there would be a conflict between attributes
2016 on the label and prefix attributes on the declaration. */
2018 stmts_and_decls:
2019 lineno_stmt_decl_or_labels_ending_stmt
2020 | lineno_stmt_decl_or_labels_ending_decl
2021 | lineno_stmt_decl_or_labels_ending_label
2022 {
2023 pedwarn ("deprecated use of label at end of compound statement");
2024 }
2025 | lineno_stmt_decl_or_labels_ending_error
2026 ;
2028 lineno_stmt_decl_or_labels_ending_stmt:
2029 lineno_stmt
2030 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2031 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2032 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2033 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2034 ;
2036 lineno_stmt_decl_or_labels_ending_decl:
2037 lineno_decl
2038 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2039 { if (pedantic && !flag_isoc99)
2040 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2041 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2042 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2043 ;
2045 lineno_stmt_decl_or_labels_ending_label:
2046 lineno_label
2047 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2048 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2049 | lineno_stmt_decl_or_labels_ending_label lineno_label
2050 | lineno_stmt_decl_or_labels_ending_error lineno_label
2051 ;
2053 lineno_stmt_decl_or_labels_ending_error:
2054 errstmt
2055 | lineno_stmt_decl_or_labels errstmt
2056 ;
2058 lineno_stmt_decl_or_labels:
2059 lineno_stmt_decl_or_labels_ending_stmt
2060 | lineno_stmt_decl_or_labels_ending_decl
2061 | lineno_stmt_decl_or_labels_ending_label
2062 | lineno_stmt_decl_or_labels_ending_error
2063 ;
2065 errstmt: error ';'
2066 ;
2068 pushlevel: /* empty */
2069 { pushlevel (0);
2070 clear_last_expr ();
2071 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2072 ifobjc
2073 if (objc_method_context)
2074 add_objc_decls ();
2075 end ifobjc
2076 }
2077 ;
2079 poplevel: /* empty */
2080 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2081 ;
2083 /* Start and end blocks created for the new scopes of C99. */
2084 c99_block_start: /* empty */
2085 { if (flag_isoc99)
2086 {
2087 $$ = c_begin_compound_stmt ();
2088 pushlevel (0);
2089 clear_last_expr ();
2090 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2091 ifobjc
2092 if (objc_method_context)
2093 add_objc_decls ();
2094 end ifobjc
2095 }
2096 else
2097 $$ = NULL_TREE;
2098 }
2099 ;
2101 /* Productions using c99_block_start and c99_block_end will need to do what's
2102 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2103 $1 is the value of c99_block_start and $2 of c99_block_end. */
2104 c99_block_end: /* empty */
2105 { if (flag_isoc99)
2106 {
2107 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2108 $$ = poplevel (kept_level_p (), 0, 0);
2109 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2110 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2111 = $$;
2112 }
2113 else
2114 $$ = NULL_TREE; }
2115 ;
2117 /* Read zero or more forward-declarations for labels
2118 that nested functions can jump to. */
2119 maybe_label_decls:
2120 /* empty */
2121 | label_decls
2122 { if (pedantic)
2123 pedwarn ("ISO C forbids label declarations"); }
2124 ;
2126 label_decls:
2127 label_decl
2128 | label_decls label_decl
2129 ;
2131 label_decl:
2132 LABEL identifiers_or_typenames ';'
2133 { tree link;
2134 for (link = $2; link; link = TREE_CHAIN (link))
2135 {
2136 tree label = shadow_label (TREE_VALUE (link));
2137 C_DECLARED_LABEL_FLAG (label) = 1;
2138 add_decl_stmt (label);
2139 }
2140 }
2141 ;
2143 /* This is the body of a function definition.
2144 It causes syntax errors to ignore to the next openbrace. */
2145 compstmt_or_error:
2146 compstmt
2147 {}
2148 | error compstmt
2149 ;
2151 compstmt_start: '{' { compstmt_count++;
2152 $$ = c_begin_compound_stmt (); }
2153 ;
2155 compstmt_nostart: '}'
2156 { $$ = convert (void_type_node, integer_zero_node); }
2157 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2158 { $$ = poplevel (kept_level_p (), 1, 0);
2159 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2160 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2161 = $$; }
2162 ;
2164 compstmt_contents_nonempty:
2165 stmts_and_decls
2166 | error
2167 ;
2169 compstmt_primary_start:
2170 '(' '{'
2171 { if (current_function_decl == 0)
2172 {
2173 error ("braced-group within expression allowed only inside a function");
2174 YYERROR;
2175 }
2176 /* We must force a BLOCK for this level
2177 so that, if it is not expanded later,
2178 there is a way to turn off the entire subtree of blocks
2179 that are contained in it. */
2180 keep_next_level ();
2181 push_label_level ();
2182 compstmt_count++;
2183 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2184 }
2185 ;
2187 compstmt: compstmt_start compstmt_nostart
2188 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2189 last_expr_type = NULL_TREE;
2190 $$ = $1; }
2191 ;
2193 /* Value is number of statements counted as of the closeparen. */
2194 simple_if:
2195 if_prefix c99_block_lineno_labeled_stmt
2196 { c_finish_then (); }
2197 /* Make sure c_expand_end_cond is run once
2198 for each call to c_expand_start_cond.
2199 Otherwise a crash is likely. */
2200 | if_prefix error
2201 ;
2203 if_prefix:
2204 /* We must build the IF_STMT node before parsing its
2205 condition so that STMT_LINENO refers to the line
2206 containing the "if", and not the line containing
2207 the close-parenthesis.
2209 c_begin_if_stmt returns the IF_STMT node, which
2210 we later pass to c_expand_start_cond to fill
2211 in the condition and other tidbits. */
2212 IF
2213 { $<ttype>$ = c_begin_if_stmt (); }
2214 '(' expr ')'
2215 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2216 compstmt_count,$<ttype>2);
2217 $<itype>$ = stmt_count;
2218 if_stmt_file = $<filename>-2;
2219 if_stmt_line = $<lineno>-1; }
2220 ;
2222 /* This is a subroutine of stmt.
2223 It is used twice, once for valid DO statements
2224 and once for catching errors in parsing the end test. */
2225 do_stmt_start:
2226 DO
2227 { stmt_count++;
2228 compstmt_count++;
2229 $<ttype>$
2230 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2231 NULL_TREE));
2232 /* In the event that a parse error prevents
2233 parsing the complete do-statement, set the
2234 condition now. Otherwise, we can get crashes at
2235 RTL-generation time. */
2236 DO_COND ($<ttype>$) = error_mark_node; }
2237 c99_block_lineno_labeled_stmt WHILE
2238 { $$ = $<ttype>2;
2239 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2240 ;
2242 /* The forced readahead in here is because we might be at the end of a
2243 line, and the line and file won't be bumped until yylex absorbs the
2244 first token on the next line. */
2245 save_filename:
2246 { if (yychar == YYEMPTY)
2247 yychar = YYLEX;
2248 $$ = input_filename; }
2249 ;
2251 save_lineno:
2252 { if (yychar == YYEMPTY)
2253 yychar = YYLEX;
2254 $$ = lineno; }
2255 ;
2257 lineno_labeled_stmt:
2258 lineno_stmt
2259 | lineno_label lineno_labeled_stmt
2260 ;
2262 /* Like lineno_labeled_stmt, but a block in C99. */
2263 c99_block_lineno_labeled_stmt:
2264 c99_block_start lineno_labeled_stmt c99_block_end
2265 { if (flag_isoc99)
2266 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2267 ;
2269 lineno_stmt:
2270 save_filename save_lineno stmt
2271 { if ($3)
2272 {
2273 STMT_LINENO ($3) = $2;
2274 /* ??? We currently have no way of recording
2275 the filename for a statement. This probably
2276 matters little in practice at the moment,
2277 but I suspect that problems will occur when
2278 doing inlining at the tree level. */
2279 }
2280 }
2281 ;
2283 lineno_label:
2284 save_filename save_lineno label
2285 { if ($3)
2286 {
2287 STMT_LINENO ($3) = $2;
2288 }
2289 }
2290 ;
2292 select_or_iter_stmt:
2293 simple_if ELSE
2294 { c_expand_start_else ();
2295 $<itype>1 = stmt_count; }
2296 c99_block_lineno_labeled_stmt
2297 { c_finish_else ();
2298 c_expand_end_cond ();
2299 if (extra_warnings && stmt_count == $<itype>1)
2300 warning ("empty body in an else-statement"); }
2301 | simple_if %prec IF
2302 { c_expand_end_cond ();
2303 /* This warning is here instead of in simple_if, because we
2304 do not want a warning if an empty if is followed by an
2305 else statement. Increment stmt_count so we don't
2306 give a second error if this is a nested `if'. */
2307 if (extra_warnings && stmt_count++ == $<itype>1)
2308 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2309 "empty body in an if-statement"); }
2310 /* Make sure c_expand_end_cond is run once
2311 for each call to c_expand_start_cond.
2312 Otherwise a crash is likely. */
2313 | simple_if ELSE error
2314 { c_expand_end_cond (); }
2315 /* We must build the WHILE_STMT node before parsing its
2316 condition so that STMT_LINENO refers to the line
2317 containing the "while", and not the line containing
2318 the close-parenthesis.
2320 c_begin_while_stmt returns the WHILE_STMT node, which
2321 we later pass to c_finish_while_stmt_cond to fill
2322 in the condition and other tidbits. */
2323 | WHILE
2324 { stmt_count++;
2325 $<ttype>$ = c_begin_while_stmt (); }
2326 '(' expr ')'
2327 { $4 = c_common_truthvalue_conversion ($4);
2328 c_finish_while_stmt_cond
2329 (c_common_truthvalue_conversion ($4), $<ttype>2);
2330 $<ttype>$ = add_stmt ($<ttype>2); }
2331 c99_block_lineno_labeled_stmt
2332 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2333 | do_stmt_start
2334 '(' expr ')' ';'
2335 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2336 | do_stmt_start error
2337 { }
2338 | FOR
2339 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2340 NULL_TREE, NULL_TREE);
2341 add_stmt ($<ttype>$); }
2342 '(' for_init_stmt
2343 { stmt_count++;
2344 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2345 xexpr ';'
2346 { if ($6)
2347 FOR_COND ($<ttype>2)
2348 = c_common_truthvalue_conversion ($6); }
2349 xexpr ')'
2350 { FOR_EXPR ($<ttype>2) = $9; }
2351 c99_block_lineno_labeled_stmt
2352 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2353 | SWITCH '(' expr ')'
2354 { stmt_count++;
2355 $<ttype>$ = c_start_case ($3); }
2356 c99_block_lineno_labeled_stmt
2357 { c_finish_case (); }
2358 ;
2360 for_init_stmt:
2361 xexpr ';'
2362 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2363 | decl
2364 { check_for_loop_decls (); }
2365 ;
2367 /* Parse a single real statement, not including any labels. */
2368 stmt:
2369 compstmt
2370 { stmt_count++; $$ = $1; }
2371 | expr ';'
2372 { stmt_count++;
2373 $$ = c_expand_expr_stmt ($1); }
2374 | c99_block_start select_or_iter_stmt c99_block_end
2375 { if (flag_isoc99)
2376 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2377 $$ = NULL_TREE; }
2378 | BREAK ';'
2379 { stmt_count++;
2380 $$ = add_stmt (build_break_stmt ()); }
2381 | CONTINUE ';'
2382 { stmt_count++;
2383 $$ = add_stmt (build_continue_stmt ()); }
2384 | RETURN ';'
2385 { stmt_count++;
2386 $$ = c_expand_return (NULL_TREE); }
2387 | RETURN expr ';'
2388 { stmt_count++;
2389 $$ = c_expand_return ($2); }
2390 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2391 { stmt_count++;
2392 $$ = simple_asm_stmt ($4); }
2393 /* This is the case with just output operands. */
2394 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2395 { stmt_count++;
2396 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2397 /* This is the case with input operands as well. */
2398 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2399 asm_operands ')' ';'
2400 { stmt_count++;
2401 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2402 /* This is the case with clobbered registers as well. */
2403 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2404 asm_operands ':' asm_clobbers ')' ';'
2405 { stmt_count++;
2406 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2407 | GOTO identifier ';'
2408 { tree decl;
2409 stmt_count++;
2410 decl = lookup_label ($2);
2411 if (decl != 0)
2412 {
2413 TREE_USED (decl) = 1;
2414 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2415 }
2416 else
2417 $$ = NULL_TREE;
2418 }
2419 | GOTO '*' expr ';'
2420 { if (pedantic)
2421 pedwarn ("ISO C forbids `goto *expr;'");
2422 stmt_count++;
2423 $3 = convert (ptr_type_node, $3);
2424 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2425 | ';'
2426 { $$ = NULL_TREE; }
2427 ;
2429 /* Any kind of label, including jump labels and case labels.
2430 ANSI C accepts labels only before statements, but we allow them
2431 also at the end of a compound statement. */
2433 label: CASE expr_no_commas ':'
2434 { stmt_count++;
2435 $$ = do_case ($2, NULL_TREE); }
2436 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2437 { stmt_count++;
2438 $$ = do_case ($2, $4); }
2439 | DEFAULT ':'
2440 { stmt_count++;
2441 $$ = do_case (NULL_TREE, NULL_TREE); }
2442 | identifier save_filename save_lineno ':' maybe_attribute
2443 { tree label = define_label ($2, $3, $1);
2444 stmt_count++;
2445 if (label)
2446 {
2447 decl_attributes (&label, $5, 0);
2448 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2449 }
2450 else
2451 $$ = NULL_TREE;
2452 }
2453 ;
2455 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2457 maybe_type_qual:
2458 /* empty */
2459 { emit_line_note (input_filename, lineno);
2460 $$ = NULL_TREE; }
2461 | TYPE_QUAL
2462 { emit_line_note (input_filename, lineno); }
2463 ;
2465 xexpr:
2466 /* empty */
2467 { $$ = NULL_TREE; }
2468 | expr
2469 ;
2471 /* These are the operands other than the first string and colon
2472 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2473 asm_operands: /* empty */
2474 { $$ = NULL_TREE; }
2475 | nonnull_asm_operands
2476 ;
2478 nonnull_asm_operands:
2479 asm_operand
2480 | nonnull_asm_operands ',' asm_operand
2481 { $$ = chainon ($1, $3); }
2482 ;
2484 asm_operand:
2485 STRING '(' expr ')'
2486 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2487 | '[' identifier ']' STRING '(' expr ')'
2488 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2489 IDENTIFIER_POINTER ($2));
2490 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2491 ;
2493 asm_clobbers:
2494 STRING
2495 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2496 | asm_clobbers ',' STRING
2497 { $$ = tree_cons (NULL_TREE, $3, $1); }
2498 ;
2499 \f
2500 /* This is what appears inside the parens in a function declarator.
2501 Its value is a list of ..._TYPE nodes. Attributes must appear here
2502 to avoid a conflict with their appearance after an open parenthesis
2503 in an abstract declarator, as in
2504 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2505 parmlist:
2506 maybe_attribute
2507 { pushlevel (0);
2508 clear_parm_order ();
2509 declare_parm_level (0); }
2510 parmlist_1
2511 { $$ = $3;
2512 parmlist_tags_warning ();
2513 poplevel (0, 0, 0); }
2514 ;
2516 parmlist_1:
2517 parmlist_2 ')'
2518 | parms ';'
2519 { tree parm;
2520 if (pedantic)
2521 pedwarn ("ISO C forbids forward parameter declarations");
2522 /* Mark the forward decls as such. */
2523 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2524 TREE_ASM_WRITTEN (parm) = 1;
2525 clear_parm_order (); }
2526 maybe_attribute
2527 { /* Dummy action so attributes are in known place
2528 on parser stack. */ }
2529 parmlist_1
2530 { $$ = $6; }
2531 | error ')'
2532 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2533 ;
2535 /* This is what appears inside the parens in a function declarator.
2536 Is value is represented in the format that grokdeclarator expects. */
2537 parmlist_2: /* empty */
2538 { $$ = get_parm_info (0); }
2539 | ELLIPSIS
2540 { $$ = get_parm_info (0);
2541 /* Gcc used to allow this as an extension. However, it does
2542 not work for all targets, and thus has been disabled.
2543 Also, since func (...) and func () are indistinguishable,
2544 it caused problems with the code in expand_builtin which
2545 tries to verify that BUILT_IN_NEXT_ARG is being used
2546 correctly. */
2547 error ("ISO C requires a named argument before `...'");
2548 }
2549 | parms
2550 { $$ = get_parm_info (1); }
2551 | parms ',' ELLIPSIS
2552 { $$ = get_parm_info (0); }
2553 ;
2555 parms:
2556 firstparm
2557 { push_parm_decl ($1); }
2558 | parms ',' parm
2559 { push_parm_decl ($3); }
2560 ;
2562 /* A single parameter declaration or parameter type name,
2563 as found in a parmlist. */
2564 parm:
2565 declspecs_ts setspecs parm_declarator maybe_attribute
2566 { $$ = build_tree_list (build_tree_list (current_declspecs,
2567 $3),
2568 chainon ($4, all_prefix_attributes));
2569 POP_DECLSPEC_STACK; }
2570 | declspecs_ts setspecs notype_declarator maybe_attribute
2571 { $$ = build_tree_list (build_tree_list (current_declspecs,
2572 $3),
2573 chainon ($4, all_prefix_attributes));
2574 POP_DECLSPEC_STACK; }
2575 | declspecs_ts setspecs absdcl_maybe_attribute
2576 { $$ = $3;
2577 POP_DECLSPEC_STACK; }
2578 | declspecs_nots setspecs notype_declarator maybe_attribute
2579 { $$ = build_tree_list (build_tree_list (current_declspecs,
2580 $3),
2581 chainon ($4, all_prefix_attributes));
2582 POP_DECLSPEC_STACK; }
2584 | declspecs_nots setspecs absdcl_maybe_attribute
2585 { $$ = $3;
2586 POP_DECLSPEC_STACK; }
2587 ;
2589 /* The first parm, which must suck attributes from off the top of the parser
2590 stack. */
2591 firstparm:
2592 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2593 { $$ = build_tree_list (build_tree_list (current_declspecs,
2594 $3),
2595 chainon ($4, all_prefix_attributes));
2596 POP_DECLSPEC_STACK; }
2597 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2598 { $$ = build_tree_list (build_tree_list (current_declspecs,
2599 $3),
2600 chainon ($4, all_prefix_attributes));
2601 POP_DECLSPEC_STACK; }
2602 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2603 { $$ = $3;
2604 POP_DECLSPEC_STACK; }
2605 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2606 { $$ = build_tree_list (build_tree_list (current_declspecs,
2607 $3),
2608 chainon ($4, all_prefix_attributes));
2609 POP_DECLSPEC_STACK; }
2611 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2612 { $$ = $3;
2613 POP_DECLSPEC_STACK; }
2614 ;
2616 setspecs_fp:
2617 setspecs
2618 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2619 all_prefix_attributes = prefix_attributes; }
2620 ;
2622 /* This is used in a function definition
2623 where either a parmlist or an identifier list is ok.
2624 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2625 parmlist_or_identifiers:
2626 maybe_attribute
2627 { pushlevel (0);
2628 clear_parm_order ();
2629 declare_parm_level (1); }
2630 parmlist_or_identifiers_1
2631 { $$ = $3;
2632 parmlist_tags_warning ();
2633 poplevel (0, 0, 0); }
2634 ;
2636 parmlist_or_identifiers_1:
2637 parmlist_1
2638 | identifiers ')'
2639 { tree t;
2640 for (t = $1; t; t = TREE_CHAIN (t))
2641 if (TREE_VALUE (t) == NULL_TREE)
2642 error ("`...' in old-style identifier list");
2643 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2645 /* Make sure we have a parmlist after attributes. */
2646 if ($<ttype>-1 != 0
2647 && (TREE_CODE ($$) != TREE_LIST
2648 || TREE_PURPOSE ($$) == 0
2649 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2650 YYERROR1;
2651 }
2652 ;
2654 /* A nonempty list of identifiers. */
2655 identifiers:
2656 IDENTIFIER
2657 { $$ = build_tree_list (NULL_TREE, $1); }
2658 | identifiers ',' IDENTIFIER
2659 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2660 ;
2662 /* A nonempty list of identifiers, including typenames. */
2663 identifiers_or_typenames:
2664 identifier
2665 { $$ = build_tree_list (NULL_TREE, $1); }
2666 | identifiers_or_typenames ',' identifier
2667 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2668 ;
2670 extension:
2671 EXTENSION
2672 { $$ = SAVE_WARN_FLAGS();
2673 pedantic = 0;
2674 warn_pointer_arith = 0;
2675 warn_traditional = 0; }
2676 ;
2677 \f
2678 ifobjc
2679 /* Objective-C productions. */
2681 objcdef:
2682 classdef
2683 | classdecl
2684 | aliasdecl
2685 | protocoldef
2686 | methoddef
2687 | END
2688 {
2689 if (objc_implementation_context)
2690 {
2691 finish_class (objc_implementation_context);
2692 objc_ivar_chain = NULL_TREE;
2693 objc_implementation_context = NULL_TREE;
2694 }
2695 else
2696 warning ("`@end' must appear in an implementation context");
2697 }
2698 ;
2700 /* A nonempty list of identifiers. */
2701 identifier_list:
2702 identifier
2703 { $$ = build_tree_list (NULL_TREE, $1); }
2704 | identifier_list ',' identifier
2705 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2706 ;
2708 classdecl:
2709 CLASS identifier_list ';'
2710 {
2711 objc_declare_class ($2);
2712 }
2714 aliasdecl:
2715 ALIAS identifier identifier ';'
2716 {
2717 objc_declare_alias ($2, $3);
2718 }
2720 classdef:
2721 INTERFACE identifier protocolrefs '{'
2722 {
2723 objc_interface_context = objc_ivar_context
2724 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2725 objc_public_flag = 0;
2726 }
2727 ivar_decl_list '}'
2728 {
2729 continue_class (objc_interface_context);
2730 }
2731 methodprotolist
2732 END
2733 {
2734 finish_class (objc_interface_context);
2735 objc_interface_context = NULL_TREE;
2736 }
2738 | INTERFACE identifier protocolrefs
2739 {
2740 objc_interface_context
2741 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2742 continue_class (objc_interface_context);
2743 }
2744 methodprotolist
2745 END
2746 {
2747 finish_class (objc_interface_context);
2748 objc_interface_context = NULL_TREE;
2749 }
2751 | INTERFACE identifier ':' identifier protocolrefs '{'
2752 {
2753 objc_interface_context = objc_ivar_context
2754 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2755 objc_public_flag = 0;
2756 }
2757 ivar_decl_list '}'
2758 {
2759 continue_class (objc_interface_context);
2760 }
2761 methodprotolist
2762 END
2763 {
2764 finish_class (objc_interface_context);
2765 objc_interface_context = NULL_TREE;
2766 }
2768 | INTERFACE identifier ':' identifier protocolrefs
2769 {
2770 objc_interface_context
2771 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2772 continue_class (objc_interface_context);
2773 }
2774 methodprotolist
2775 END
2776 {
2777 finish_class (objc_interface_context);
2778 objc_interface_context = NULL_TREE;
2779 }
2781 | IMPLEMENTATION identifier '{'
2782 {
2783 objc_implementation_context = objc_ivar_context
2784 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2785 objc_public_flag = 0;
2786 }
2787 ivar_decl_list '}'
2788 {
2789 objc_ivar_chain
2790 = continue_class (objc_implementation_context);
2791 }
2793 | IMPLEMENTATION identifier
2794 {
2795 objc_implementation_context
2796 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2797 objc_ivar_chain
2798 = continue_class (objc_implementation_context);
2799 }
2801 | IMPLEMENTATION identifier ':' identifier '{'
2802 {
2803 objc_implementation_context = objc_ivar_context
2804 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2805 objc_public_flag = 0;
2806 }
2807 ivar_decl_list '}'
2808 {
2809 objc_ivar_chain
2810 = continue_class (objc_implementation_context);
2811 }
2813 | IMPLEMENTATION identifier ':' identifier
2814 {
2815 objc_implementation_context
2816 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2817 objc_ivar_chain
2818 = continue_class (objc_implementation_context);
2819 }
2821 | INTERFACE identifier '(' identifier ')' protocolrefs
2822 {
2823 objc_interface_context
2824 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2825 continue_class (objc_interface_context);
2826 }
2827 methodprotolist
2828 END
2829 {
2830 finish_class (objc_interface_context);
2831 objc_interface_context = NULL_TREE;
2832 }
2834 | IMPLEMENTATION identifier '(' identifier ')'
2835 {
2836 objc_implementation_context
2837 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2838 objc_ivar_chain
2839 = continue_class (objc_implementation_context);
2840 }
2841 ;
2843 protocoldef:
2844 PROTOCOL identifier protocolrefs
2845 {
2846 objc_pq_context = 1;
2847 objc_interface_context
2848 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2849 }
2850 methodprotolist END
2851 {
2852 objc_pq_context = 0;
2853 finish_protocol(objc_interface_context);
2854 objc_interface_context = NULL_TREE;
2855 }
2856 /* The @protocol forward-declaration production introduces a
2857 reduce/reduce conflict on ';', which should be resolved in
2858 favor of the production 'identifier_list -> identifier'. */
2859 | PROTOCOL identifier_list ';'
2860 {
2861 objc_declare_protocols ($2);
2862 }
2863 ;
2865 protocolrefs:
2866 /* empty */
2867 {
2868 $$ = NULL_TREE;
2869 }
2870 | non_empty_protocolrefs
2871 ;
2873 non_empty_protocolrefs:
2874 ARITHCOMPARE identifier_list ARITHCOMPARE
2875 {
2876 if ($1 == LT_EXPR && $3 == GT_EXPR)
2877 $$ = $2;
2878 else
2879 YYERROR1;
2880 }
2881 ;
2883 ivar_decl_list:
2884 ivar_decl_list visibility_spec ivar_decls
2885 | ivar_decls
2886 ;
2888 visibility_spec:
2889 PRIVATE { objc_public_flag = 2; }
2890 | PROTECTED { objc_public_flag = 0; }
2891 | PUBLIC { objc_public_flag = 1; }
2892 ;
2894 ivar_decls:
2895 /* empty */
2896 {
2897 $$ = NULL_TREE;
2898 }
2899 | ivar_decls ivar_decl ';'
2900 | ivar_decls ';'
2901 {
2902 if (pedantic)
2903 pedwarn ("extra semicolon in struct or union specified");
2904 }
2905 ;
2908 /* There is a shift-reduce conflict here, because `components' may
2909 start with a `typename'. It happens that shifting (the default resolution)
2910 does the right thing, because it treats the `typename' as part of
2911 a `typed_typespecs'.
2913 It is possible that this same technique would allow the distinction
2914 between `notype_initdecls' and `initdecls' to be eliminated.
2915 But I am being cautious and not trying it. */
2917 ivar_decl:
2918 declspecs_nosc_ts setspecs ivars
2919 { $$ = $3;
2920 POP_DECLSPEC_STACK; }
2921 | declspecs_nosc_nots setspecs ivars
2922 { $$ = $3;
2923 POP_DECLSPEC_STACK; }
2924 | error
2925 { $$ = NULL_TREE; }
2926 ;
2928 ivars:
2929 /* empty */
2930 { $$ = NULL_TREE; }
2931 | ivar_declarator
2932 | ivars ',' maybe_resetattrs ivar_declarator
2933 ;
2935 ivar_declarator:
2936 declarator
2937 {
2938 $$ = add_instance_variable (objc_ivar_context,
2939 objc_public_flag,
2940 $1, current_declspecs,
2941 NULL_TREE);
2942 }
2943 | declarator ':' expr_no_commas
2944 {
2945 $$ = add_instance_variable (objc_ivar_context,
2946 objc_public_flag,
2947 $1, current_declspecs, $3);
2948 }
2949 | ':' expr_no_commas
2950 {
2951 $$ = add_instance_variable (objc_ivar_context,
2952 objc_public_flag,
2953 NULL_TREE,
2954 current_declspecs, $2);
2955 }
2956 ;
2958 methodtype:
2959 '+'
2960 { objc_inherit_code = CLASS_METHOD_DECL; }
2961 | '-'
2962 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2963 ;
2965 methoddef:
2966 methodtype
2967 {
2968 objc_pq_context = 1;
2969 if (!objc_implementation_context)
2970 fatal_error ("method definition not in class context");
2971 }
2972 methoddecl
2973 {
2974 objc_pq_context = 0;
2975 if (objc_inherit_code == CLASS_METHOD_DECL)
2976 add_class_method (objc_implementation_context, $3);
2977 else
2978 add_instance_method (objc_implementation_context, $3);
2979 start_method_def ($3);
2980 }
2981 optarglist
2982 {
2983 continue_method_def ();
2984 }
2985 compstmt_or_error
2986 {
2987 finish_method_def ();
2988 }
2989 ;
2991 /* the reason for the strange actions in this rule
2992 is so that notype_initdecls when reached via datadef
2993 can find a valid list of type and sc specs in $0. */
2995 methodprotolist:
2996 /* empty */
2997 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2998 ;
3000 methodprotolist2: /* eliminates a shift/reduce conflict */
3001 methodproto
3002 | datadef
3003 | methodprotolist2 methodproto
3004 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
3005 ;
3007 semi_or_error:
3008 ';'
3009 | error
3010 ;
3012 methodproto:
3013 methodtype
3014 {
3015 /* Remember protocol qualifiers in prototypes. */
3016 objc_pq_context = 1;
3017 }
3018 methoddecl
3019 {
3020 /* Forget protocol qualifiers here. */
3021 objc_pq_context = 0;
3022 if (objc_inherit_code == CLASS_METHOD_DECL)
3023 add_class_method (objc_interface_context, $3);
3024 else
3025 add_instance_method (objc_interface_context, $3);
3026 }
3027 semi_or_error
3028 ;
3030 methoddecl:
3031 '(' typename ')' unaryselector
3032 {
3033 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3034 }
3036 | unaryselector
3037 {
3038 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3039 }
3041 | '(' typename ')' keywordselector optparmlist
3042 {
3043 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3044 }
3046 | keywordselector optparmlist
3047 {
3048 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3049 }
3050 ;
3052 /* "optarglist" assumes that start_method_def has already been called...
3053 if it is not, the "xdecls" will not be placed in the proper scope */
3055 optarglist:
3056 /* empty */
3057 | ';' myxdecls
3058 ;
3060 /* to get around the following situation: "int foo (int a) int b; {}" that
3061 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3063 myxdecls:
3064 /* empty */
3065 | mydecls
3066 ;
3068 mydecls:
3069 mydecl
3070 | errstmt
3071 | mydecls mydecl
3072 | mydecl errstmt
3073 ;
3075 mydecl:
3076 declspecs_ts setspecs myparms ';'
3077 { POP_DECLSPEC_STACK; }
3078 | declspecs_ts ';'
3079 { shadow_tag ($1); }
3080 | declspecs_nots ';'
3081 { pedwarn ("empty declaration"); }
3082 ;
3084 myparms:
3085 myparm
3086 { push_parm_decl ($1); }
3087 | myparms ',' myparm
3088 { push_parm_decl ($3); }
3089 ;
3091 /* A single parameter declaration or parameter type name,
3092 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3094 myparm:
3095 parm_declarator maybe_attribute
3096 { $$ = build_tree_list (build_tree_list (current_declspecs,
3097 $1),
3098 chainon ($2, all_prefix_attributes)); }
3099 | notype_declarator maybe_attribute
3100 { $$ = build_tree_list (build_tree_list (current_declspecs,
3101 $1),
3102 chainon ($2, all_prefix_attributes)); }
3103 | absdcl_maybe_attribute
3104 { $$ = $1; }
3105 ;
3107 optparmlist:
3108 /* empty */
3109 {
3110 $$ = NULL_TREE;
3111 }
3112 | ',' ELLIPSIS
3113 {
3114 /* oh what a kludge! */
3115 $$ = objc_ellipsis_node;
3116 }
3117 | ','
3118 {
3119 pushlevel (0);
3120 }
3121 parmlist_2
3122 {
3123 /* returns a tree list node generated by get_parm_info */
3124 $$ = $3;
3125 poplevel (0, 0, 0);
3126 }
3127 ;
3129 unaryselector:
3130 selector
3131 ;
3133 keywordselector:
3134 keyworddecl
3136 | keywordselector keyworddecl
3137 {
3138 $$ = chainon ($1, $2);
3139 }
3140 ;
3142 selector:
3143 IDENTIFIER
3144 | TYPENAME
3145 | CLASSNAME
3146 | OBJECTNAME
3147 | reservedwords
3148 ;
3150 reservedwords:
3151 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3152 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3153 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3154 | TYPESPEC | TYPE_QUAL
3155 ;
3157 keyworddecl:
3158 selector ':' '(' typename ')' identifier
3159 {
3160 $$ = build_keyword_decl ($1, $4, $6);
3161 }
3163 | selector ':' identifier
3164 {
3165 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3166 }
3168 | ':' '(' typename ')' identifier
3169 {
3170 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3171 }
3173 | ':' identifier
3174 {
3175 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3176 }
3177 ;
3179 messageargs:
3180 selector
3181 | keywordarglist
3182 ;
3184 keywordarglist:
3185 keywordarg
3186 | keywordarglist keywordarg
3187 {
3188 $$ = chainon ($1, $2);
3189 }
3190 ;
3193 keywordexpr:
3194 nonnull_exprlist
3195 {
3196 if (TREE_CHAIN ($1) == NULL_TREE)
3197 /* just return the expr., remove a level of indirection */
3198 $$ = TREE_VALUE ($1);
3199 else
3200 /* we have a comma expr., we will collapse later */
3201 $$ = $1;
3202 }
3203 ;
3205 keywordarg:
3206 selector ':' keywordexpr
3207 {
3208 $$ = build_tree_list ($1, $3);
3209 }
3210 | ':' keywordexpr
3211 {
3212 $$ = build_tree_list (NULL_TREE, $2);
3213 }
3214 ;
3216 receiver:
3217 expr
3218 | CLASSNAME
3219 {
3220 $$ = get_class_reference ($1);
3221 }
3222 ;
3224 objcmessageexpr:
3225 '['
3226 { objc_receiver_context = 1; }
3227 receiver
3228 { objc_receiver_context = 0; }
3229 messageargs ']'
3230 {
3231 $$ = build_tree_list ($3, $5);
3232 }
3233 ;
3235 selectorarg:
3236 selector
3237 | keywordnamelist
3238 ;
3240 keywordnamelist:
3241 keywordname
3242 | keywordnamelist keywordname
3243 {
3244 $$ = chainon ($1, $2);
3245 }
3246 ;
3248 keywordname:
3249 selector ':'
3250 {
3251 $$ = build_tree_list ($1, NULL_TREE);
3252 }
3253 | ':'
3254 {
3255 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3256 }
3257 ;
3259 objcselectorexpr:
3260 SELECTOR '(' selectorarg ')'
3261 {
3262 $$ = $3;
3263 }
3264 ;
3266 objcprotocolexpr:
3267 PROTOCOL '(' identifier ')'
3268 {
3269 $$ = $3;
3270 }
3271 ;
3273 /* extension to support C-structures in the archiver */
3275 objcencodeexpr:
3276 ENCODE '(' typename ')'
3277 {
3278 $$ = groktypename ($3);
3279 }
3280 ;
3282 end ifobjc
3283 %%
3285 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3286 cpplib.h's token codes into yacc's token codes. */
3288 static enum cpp_ttype last_token;
3290 /* The reserved keyword table. */
3291 struct resword
3292 {
3293 const char *word;
3294 ENUM_BITFIELD(rid) rid : 16;
3295 unsigned int disable : 16;
3296 };
3298 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3299 _true_. */
3300 #define D_C89 0x01 /* not in C89 */
3301 #define D_EXT 0x02 /* GCC extension */
3302 #define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3303 #define D_OBJC 0x08 /* Objective C only */
3305 static const struct resword reswords[] =
3306 {
3307 { "_Bool", RID_BOOL, 0 },
3308 { "_Complex", RID_COMPLEX, 0 },
3309 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3310 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3311 { "__alignof", RID_ALIGNOF, 0 },
3312 { "__alignof__", RID_ALIGNOF, 0 },
3313 { "__asm", RID_ASM, 0 },
3314 { "__asm__", RID_ASM, 0 },
3315 { "__attribute", RID_ATTRIBUTE, 0 },
3316 { "__attribute__", RID_ATTRIBUTE, 0 },
3317 { "__bounded", RID_BOUNDED, 0 },
3318 { "__bounded__", RID_BOUNDED, 0 },
3319 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3320 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3321 { "__builtin_va_arg", RID_VA_ARG, 0 },
3322 { "__complex", RID_COMPLEX, 0 },
3323 { "__complex__", RID_COMPLEX, 0 },
3324 { "__const", RID_CONST, 0 },
3325 { "__const__", RID_CONST, 0 },
3326 { "__extension__", RID_EXTENSION, 0 },
3327 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3328 { "__imag", RID_IMAGPART, 0 },
3329 { "__imag__", RID_IMAGPART, 0 },
3330 { "__inline", RID_INLINE, 0 },
3331 { "__inline__", RID_INLINE, 0 },
3332 { "__label__", RID_LABEL, 0 },
3333 { "__ptrbase", RID_PTRBASE, 0 },
3334 { "__ptrbase__", RID_PTRBASE, 0 },
3335 { "__ptrextent", RID_PTREXTENT, 0 },
3336 { "__ptrextent__", RID_PTREXTENT, 0 },
3337 { "__ptrvalue", RID_PTRVALUE, 0 },
3338 { "__ptrvalue__", RID_PTRVALUE, 0 },
3339 { "__real", RID_REALPART, 0 },
3340 { "__real__", RID_REALPART, 0 },
3341 { "__restrict", RID_RESTRICT, 0 },
3342 { "__restrict__", RID_RESTRICT, 0 },
3343 { "__signed", RID_SIGNED, 0 },
3344 { "__signed__", RID_SIGNED, 0 },
3345 { "__thread", RID_THREAD, 0 },
3346 { "__typeof", RID_TYPEOF, 0 },
3347 { "__typeof__", RID_TYPEOF, 0 },
3348 { "__unbounded", RID_UNBOUNDED, 0 },
3349 { "__unbounded__", RID_UNBOUNDED, 0 },
3350 { "__volatile", RID_VOLATILE, 0 },
3351 { "__volatile__", RID_VOLATILE, 0 },
3352 { "asm", RID_ASM, D_EXT },
3353 { "auto", RID_AUTO, 0 },
3354 { "break", RID_BREAK, 0 },
3355 { "case", RID_CASE, 0 },
3356 { "char", RID_CHAR, 0 },
3357 { "const", RID_CONST, 0 },
3358 { "continue", RID_CONTINUE, 0 },
3359 { "default", RID_DEFAULT, 0 },
3360 { "do", RID_DO, 0 },
3361 { "double", RID_DOUBLE, 0 },
3362 { "else", RID_ELSE, 0 },
3363 { "enum", RID_ENUM, 0 },
3364 { "extern", RID_EXTERN, 0 },
3365 { "float", RID_FLOAT, 0 },
3366 { "for", RID_FOR, 0 },
3367 { "goto", RID_GOTO, 0 },
3368 { "if", RID_IF, 0 },
3369 { "inline", RID_INLINE, D_EXT89 },
3370 { "int", RID_INT, 0 },
3371 { "long", RID_LONG, 0 },
3372 { "register", RID_REGISTER, 0 },
3373 { "restrict", RID_RESTRICT, D_C89 },
3374 { "return", RID_RETURN, 0 },
3375 { "short", RID_SHORT, 0 },
3376 { "signed", RID_SIGNED, 0 },
3377 { "sizeof", RID_SIZEOF, 0 },
3378 { "static", RID_STATIC, 0 },
3379 { "struct", RID_STRUCT, 0 },
3380 { "switch", RID_SWITCH, 0 },
3381 { "typedef", RID_TYPEDEF, 0 },
3382 { "typeof", RID_TYPEOF, D_EXT },
3383 { "union", RID_UNION, 0 },
3384 { "unsigned", RID_UNSIGNED, 0 },
3385 { "void", RID_VOID, 0 },
3386 { "volatile", RID_VOLATILE, 0 },
3387 { "while", RID_WHILE, 0 },
3388 ifobjc
3389 { "id", RID_ID, D_OBJC },
3391 /* These objc keywords are recognized only immediately after
3392 an '@'. */
3393 { "class", RID_AT_CLASS, D_OBJC },
3394 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3395 { "defs", RID_AT_DEFS, D_OBJC },
3396 { "encode", RID_AT_ENCODE, D_OBJC },
3397 { "end", RID_AT_END, D_OBJC },
3398 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3399 { "interface", RID_AT_INTERFACE, D_OBJC },
3400 { "private", RID_AT_PRIVATE, D_OBJC },
3401 { "protected", RID_AT_PROTECTED, D_OBJC },
3402 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3403 { "public", RID_AT_PUBLIC, D_OBJC },
3404 { "selector", RID_AT_SELECTOR, D_OBJC },
3406 /* These are recognized only in protocol-qualifier context
3407 (see above) */
3408 { "bycopy", RID_BYCOPY, D_OBJC },
3409 { "byref", RID_BYREF, D_OBJC },
3410 { "in", RID_IN, D_OBJC },
3411 { "inout", RID_INOUT, D_OBJC },
3412 { "oneway", RID_ONEWAY, D_OBJC },
3413 { "out", RID_OUT, D_OBJC },
3414 end ifobjc
3415 };
3416 #define N_reswords (sizeof reswords / sizeof (struct resword))
3418 /* Table mapping from RID_* constants to yacc token numbers.
3419 Unfortunately we have to have entries for all the keywords in all
3420 three languages. */
3421 static const short rid_to_yy[RID_MAX] =
3422 {
3423 /* RID_STATIC */ STATIC,
3424 /* RID_UNSIGNED */ TYPESPEC,
3425 /* RID_LONG */ TYPESPEC,
3426 /* RID_CONST */ TYPE_QUAL,
3427 /* RID_EXTERN */ SCSPEC,
3428 /* RID_REGISTER */ SCSPEC,
3429 /* RID_TYPEDEF */ SCSPEC,
3430 /* RID_SHORT */ TYPESPEC,
3431 /* RID_INLINE */ SCSPEC,
3432 /* RID_VOLATILE */ TYPE_QUAL,
3433 /* RID_SIGNED */ TYPESPEC,
3434 /* RID_AUTO */ SCSPEC,
3435 /* RID_RESTRICT */ TYPE_QUAL,
3437 /* C extensions */
3438 /* RID_BOUNDED */ TYPE_QUAL,
3439 /* RID_UNBOUNDED */ TYPE_QUAL,
3440 /* RID_COMPLEX */ TYPESPEC,
3441 /* RID_THREAD */ SCSPEC,
3443 /* C++ */
3444 /* RID_FRIEND */ 0,
3445 /* RID_VIRTUAL */ 0,
3446 /* RID_EXPLICIT */ 0,
3447 /* RID_EXPORT */ 0,
3448 /* RID_MUTABLE */ 0,
3450 /* ObjC */
3451 /* RID_IN */ TYPE_QUAL,
3452 /* RID_OUT */ TYPE_QUAL,
3453 /* RID_INOUT */ TYPE_QUAL,
3454 /* RID_BYCOPY */ TYPE_QUAL,
3455 /* RID_BYREF */ TYPE_QUAL,
3456 /* RID_ONEWAY */ TYPE_QUAL,
3458 /* C */
3459 /* RID_INT */ TYPESPEC,
3460 /* RID_CHAR */ TYPESPEC,
3461 /* RID_FLOAT */ TYPESPEC,
3462 /* RID_DOUBLE */ TYPESPEC,
3463 /* RID_VOID */ TYPESPEC,
3464 /* RID_ENUM */ ENUM,
3465 /* RID_STRUCT */ STRUCT,
3466 /* RID_UNION */ UNION,
3467 /* RID_IF */ IF,
3468 /* RID_ELSE */ ELSE,
3469 /* RID_WHILE */ WHILE,
3470 /* RID_DO */ DO,
3471 /* RID_FOR */ FOR,
3472 /* RID_SWITCH */ SWITCH,
3473 /* RID_CASE */ CASE,
3474 /* RID_DEFAULT */ DEFAULT,
3475 /* RID_BREAK */ BREAK,
3476 /* RID_CONTINUE */ CONTINUE,
3477 /* RID_RETURN */ RETURN,
3478 /* RID_GOTO */ GOTO,
3479 /* RID_SIZEOF */ SIZEOF,
3481 /* C extensions */
3482 /* RID_ASM */ ASM_KEYWORD,
3483 /* RID_TYPEOF */ TYPEOF,
3484 /* RID_ALIGNOF */ ALIGNOF,
3485 /* RID_ATTRIBUTE */ ATTRIBUTE,
3486 /* RID_VA_ARG */ VA_ARG,
3487 /* RID_EXTENSION */ EXTENSION,
3488 /* RID_IMAGPART */ IMAGPART,
3489 /* RID_REALPART */ REALPART,
3490 /* RID_LABEL */ LABEL,
3491 /* RID_PTRBASE */ PTR_BASE,
3492 /* RID_PTREXTENT */ PTR_EXTENT,
3493 /* RID_PTRVALUE */ PTR_VALUE,
3495 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3496 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3498 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3499 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3500 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3502 /* C++ */
3503 /* RID_BOOL */ TYPESPEC,
3504 /* RID_WCHAR */ 0,
3505 /* RID_CLASS */ 0,
3506 /* RID_PUBLIC */ 0,
3507 /* RID_PRIVATE */ 0,
3508 /* RID_PROTECTED */ 0,
3509 /* RID_TEMPLATE */ 0,
3510 /* RID_NULL */ 0,
3511 /* RID_CATCH */ 0,
3512 /* RID_DELETE */ 0,
3513 /* RID_FALSE */ 0,
3514 /* RID_NAMESPACE */ 0,
3515 /* RID_NEW */ 0,
3516 /* RID_OPERATOR */ 0,
3517 /* RID_THIS */ 0,
3518 /* RID_THROW */ 0,
3519 /* RID_TRUE */ 0,
3520 /* RID_TRY */ 0,
3521 /* RID_TYPENAME */ 0,
3522 /* RID_TYPEID */ 0,
3523 /* RID_USING */ 0,
3525 /* casts */
3526 /* RID_CONSTCAST */ 0,
3527 /* RID_DYNCAST */ 0,
3528 /* RID_REINTCAST */ 0,
3529 /* RID_STATCAST */ 0,
3531 /* alternate spellings */
3532 /* RID_AND */ 0,
3533 /* RID_AND_EQ */ 0,
3534 /* RID_NOT */ 0,
3535 /* RID_NOT_EQ */ 0,
3536 /* RID_OR */ 0,
3537 /* RID_OR_EQ */ 0,
3538 /* RID_XOR */ 0,
3539 /* RID_XOR_EQ */ 0,
3540 /* RID_BITAND */ 0,
3541 /* RID_BITOR */ 0,
3542 /* RID_COMPL */ 0,
3544 /* Objective C */
3545 /* RID_ID */ OBJECTNAME,
3546 /* RID_AT_ENCODE */ ENCODE,
3547 /* RID_AT_END */ END,
3548 /* RID_AT_CLASS */ CLASS,
3549 /* RID_AT_ALIAS */ ALIAS,
3550 /* RID_AT_DEFS */ DEFS,
3551 /* RID_AT_PRIVATE */ PRIVATE,
3552 /* RID_AT_PROTECTED */ PROTECTED,
3553 /* RID_AT_PUBLIC */ PUBLIC,
3554 /* RID_AT_PROTOCOL */ PROTOCOL,
3555 /* RID_AT_SELECTOR */ SELECTOR,
3556 /* RID_AT_INTERFACE */ INTERFACE,
3557 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3558 };
3560 static void
3561 init_reswords ()
3562 {
3563 unsigned int i;
3564 tree id;
3565 int mask = (flag_isoc99 ? 0 : D_C89)
3566 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3568 if (c_language != clk_objective_c)
3569 mask |= D_OBJC;
3571 /* It is not necessary to register ridpointers as a GC root, because
3572 all the trees it points to are permanently interned in the
3573 get_identifier hash anyway. */
3574 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3575 for (i = 0; i < N_reswords; i++)
3576 {
3577 /* If a keyword is disabled, do not enter it into the table
3578 and so create a canonical spelling that isn't a keyword. */
3579 if (reswords[i].disable & mask)
3580 continue;
3582 id = get_identifier (reswords[i].word);
3583 C_RID_CODE (id) = reswords[i].rid;
3584 C_IS_RESERVED_WORD (id) = 1;
3585 ridpointers [(int) reswords[i].rid] = id;
3586 }
3587 }
3589 #define NAME(type) cpp_type2name (type)
3591 static void
3592 yyerror (msgid)
3593 const char *msgid;
3594 {
3595 const char *string = _(msgid);
3597 if (last_token == CPP_EOF)
3598 error ("%s at end of input", string);
3599 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3600 {
3601 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3602 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3603 if (val <= UCHAR_MAX && ISGRAPH (val))
3604 error ("%s before %s'%c'", string, ell, val);
3605 else
3606 error ("%s before %s'\\x%x'", string, ell, val);
3607 }
3608 else if (last_token == CPP_STRING
3609 || last_token == CPP_WSTRING)
3610 error ("%s before string constant", string);
3611 else if (last_token == CPP_NUMBER)
3612 error ("%s before numeric constant", string);
3613 else if (last_token == CPP_NAME)
3614 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3615 else
3616 error ("%s before '%s' token", string, NAME(last_token));
3617 }
3619 static int
3620 yylexname ()
3621 {
3622 tree decl;
3624 ifobjc
3625 int objc_force_identifier = objc_need_raw_identifier;
3626 OBJC_NEED_RAW_IDENTIFIER (0);
3627 end ifobjc
3629 if (C_IS_RESERVED_WORD (yylval.ttype))
3630 {
3631 enum rid rid_code = C_RID_CODE (yylval.ttype);
3633 ifobjc
3634 /* Turn non-typedefed refs to "id" into plain identifiers; this
3635 allows constructs like "void foo(id id);" to work. */
3636 if (rid_code == RID_ID)
3637 {
3638 decl = lookup_name (yylval.ttype);
3639 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3640 return IDENTIFIER;
3641 }
3643 if (!OBJC_IS_AT_KEYWORD (rid_code)
3644 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3645 end ifobjc
3646 {
3647 int yycode = rid_to_yy[(int) rid_code];
3648 if (yycode == STRING_FUNC_NAME)
3649 {
3650 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3651 to string constants. */
3652 const char *name = fname_string (rid_code);
3654 yylval.ttype = build_string (strlen (name) + 1, name);
3655 C_ARTIFICIAL_STRING_P (yylval.ttype) = 1;
3656 last_token = CPP_STRING; /* so yyerror won't choke */
3657 return STRING;
3658 }
3660 /* Return the canonical spelling for this keyword. */
3661 yylval.ttype = ridpointers[(int) rid_code];
3662 return yycode;
3663 }
3664 }
3666 decl = lookup_name (yylval.ttype);
3667 if (decl)
3668 {
3669 if (TREE_CODE (decl) == TYPE_DECL)
3670 return TYPENAME;
3671 }
3672 ifobjc
3673 else
3674 {
3675 tree objc_interface_decl = is_class_name (yylval.ttype);
3676 /* ObjC class names are in the same namespace as variables and
3677 typedefs, and hence are shadowed by local declarations. */
3678 if (objc_interface_decl
3679 && (global_bindings_p ()
3680 || (!objc_force_identifier && !decl)))
3681 {
3682 yylval.ttype = objc_interface_decl;
3683 return CLASSNAME;
3684 }
3685 }
3686 end ifobjc
3688 return IDENTIFIER;
3689 }
3691 /* Concatenate strings before returning them to the parser. This isn't quite
3692 as good as having it done in the lexer, but it's better than nothing. */
3694 static int
3695 yylexstring ()
3696 {
3697 enum cpp_ttype next_type;
3698 tree orig = yylval.ttype;
3700 next_type = c_lex (&yylval.ttype);
3701 if (next_type == CPP_STRING
3702 || next_type == CPP_WSTRING
3703 || (next_type == CPP_NAME && yylexname () == STRING))
3704 {
3705 varray_type strings;
3707 ifc
3708 static int last_lineno = 0;
3709 static const char *last_input_filename = 0;
3710 if (warn_traditional && !in_system_header
3711 && (lineno != last_lineno || !last_input_filename ||
3712 strcmp (last_input_filename, input_filename)))
3713 {
3714 warning ("traditional C rejects string concatenation");
3715 last_lineno = lineno;
3716 last_input_filename = input_filename;
3717 }
3718 end ifc
3720 VARRAY_TREE_INIT (strings, 32, "strings");
3721 VARRAY_PUSH_TREE (strings, orig);
3723 do
3724 {
3725 VARRAY_PUSH_TREE (strings, yylval.ttype);
3726 next_type = c_lex (&yylval.ttype);
3727 }
3728 while (next_type == CPP_STRING
3729 || next_type == CPP_WSTRING
3730 || (next_type == CPP_NAME && yylexname () == STRING));
3732 yylval.ttype = combine_strings (strings);
3734 VARRAY_FREE (strings);
3735 }
3736 else
3737 yylval.ttype = orig;
3739 /* We will have always read one token too many. */
3740 _cpp_backup_tokens (parse_in, 1);
3742 return STRING;
3743 }
3745 static inline int
3746 _yylex ()
3747 {
3748 get_next:
3749 last_token = c_lex (&yylval.ttype);
3750 switch (last_token)
3751 {
3752 case CPP_EQ: return '=';
3753 case CPP_NOT: return '!';
3754 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3755 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3756 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3757 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3758 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3759 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3760 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3761 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3762 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3763 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3764 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3765 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3767 case CPP_COMPL: return '~';
3768 case CPP_AND_AND: return ANDAND;
3769 case CPP_OR_OR: return OROR;
3770 case CPP_QUERY: return '?';
3771 case CPP_OPEN_PAREN: return '(';
3772 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3773 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3774 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3775 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3777 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3778 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3779 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3780 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3781 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3782 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3783 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3784 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3785 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3786 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3788 case CPP_OPEN_SQUARE: return '[';
3789 case CPP_CLOSE_SQUARE: return ']';
3790 case CPP_OPEN_BRACE: return '{';
3791 case CPP_CLOSE_BRACE: return '}';
3792 case CPP_ELLIPSIS: return ELLIPSIS;
3794 case CPP_PLUS_PLUS: return PLUSPLUS;
3795 case CPP_MINUS_MINUS: return MINUSMINUS;
3796 case CPP_DEREF: return POINTSAT;
3797 case CPP_DOT: return '.';
3799 /* The following tokens may affect the interpretation of any
3800 identifiers following, if doing Objective-C. */
3801 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3802 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3803 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3804 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3806 case CPP_EOF:
3807 return 0;
3809 case CPP_NAME:
3810 {
3811 int ret = yylexname ();
3812 if (ret == STRING)
3813 return yylexstring ();
3814 else
3815 return ret;
3816 }
3818 case CPP_NUMBER:
3819 case CPP_CHAR:
3820 case CPP_WCHAR:
3821 return CONSTANT;
3823 case CPP_STRING:
3824 case CPP_WSTRING:
3825 return yylexstring ();
3827 /* This token is Objective-C specific. It gives the next token
3828 special significance. */
3829 case CPP_ATSIGN:
3830 ifobjc
3831 {
3832 tree after_at;
3833 enum cpp_ttype after_at_type;
3835 after_at_type = c_lex (&after_at);
3837 if (after_at_type == CPP_NAME
3838 && C_IS_RESERVED_WORD (after_at)
3839 && OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
3840 {
3841 yylval.ttype = after_at;
3842 last_token = after_at_type;
3843 return rid_to_yy [(int) C_RID_CODE (after_at)];
3844 }
3845 _cpp_backup_tokens (parse_in, 1);
3846 return '@';
3847 }
3848 end ifobjc
3850 /* These tokens are C++ specific (and will not be generated
3851 in C mode, but let's be cautious). */
3852 case CPP_SCOPE:
3853 case CPP_DEREF_STAR:
3854 case CPP_DOT_STAR:
3855 case CPP_MIN_EQ:
3856 case CPP_MAX_EQ:
3857 case CPP_MIN:
3858 case CPP_MAX:
3859 /* These tokens should not survive translation phase 4. */
3860 case CPP_HASH:
3861 case CPP_PASTE:
3862 error ("syntax error at '%s' token", NAME(last_token));
3863 goto get_next;
3865 default:
3866 abort ();
3867 }
3868 /* NOTREACHED */
3869 }
3871 static int
3872 yylex()
3873 {
3874 int r;
3875 timevar_push (TV_LEX);
3876 r = _yylex();
3877 timevar_pop (TV_LEX);
3878 return r;
3879 }
3881 /* Function used when yydebug is set, to print a token in more detail. */
3883 static void
3884 yyprint (file, yychar, yyl)
3885 FILE *file;
3886 int yychar;
3887 YYSTYPE yyl;
3888 {
3889 tree t = yyl.ttype;
3891 fprintf (file, " [%s]", NAME(last_token));
3893 switch (yychar)
3894 {
3895 case IDENTIFIER:
3896 case TYPENAME:
3897 case OBJECTNAME:
3898 case TYPESPEC:
3899 case TYPE_QUAL:
3900 case SCSPEC:
3901 case STATIC:
3902 if (IDENTIFIER_POINTER (t))
3903 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3904 break;
3906 case CONSTANT:
3907 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3908 if (TREE_CODE (t) == INTEGER_CST)
3909 fprintf (file,
3910 #if HOST_BITS_PER_WIDE_INT == 64
3911 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3912 " 0x%x%016x",
3913 #else
3914 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3915 " 0x%lx%016lx",
3916 #else
3917 " 0x%llx%016llx",
3918 #endif
3919 #endif
3920 #else
3921 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3922 " 0x%lx%08lx",
3923 #else
3924 " 0x%x%08x",
3925 #endif
3926 #endif
3927 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3928 break;
3929 }
3930 }
3931 \f
3932 /* This is not the ideal place to put these, but we have to get them out
3933 of c-lex.c because cp/lex.c has its own versions. */
3935 /* Free malloced parser stacks if necessary. */
3937 void
3938 free_parser_stacks ()
3939 {
3940 if (malloced_yyss)
3941 {
3942 free (malloced_yyss);
3943 free (malloced_yyvs);
3944 }
3945 }