Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
[dragonfly.git] / contrib / gcc-3.4 / gcc / c-parse.in
CommitLineData
003757ed
MD
1/* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA. */
21
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. */
27
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. */
30
31@@ifc
32%expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
33@@end_ifc
34
35%{
36#include "config.h"
37#include "system.h"
38#include "coretypes.h"
39#include "tm.h"
40#include "tree.h"
41#include "input.h"
42#include "cpplib.h"
43#include "intl.h"
44#include "timevar.h"
45#include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */
46#include "c-tree.h"
47#include "flags.h"
48#include "varray.h"
49#include "output.h"
50#include "toplev.h"
51#include "ggc.h"
52
53@@ifobjc
54#include "objc-act.h"
55@@end_ifobjc
56
57/* Like YYERROR but do call yyerror. */
58#define YYERROR1 { yyerror ("syntax error"); YYERROR; }
59
60/* Like the default stack expander, except (1) use realloc when possible,
61 (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca.
62
63 Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot
64 give malloced_yyvs its proper type. This is ok since all we need from
65 it is to be able to free it. */
66
67static short *malloced_yyss;
68static void *malloced_yyvs;
69
70#define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \
71do { \
72 size_t newsize; \
73 short *newss; \
74 YYSTYPE *newvs; \
75 newsize = *(YYSSZ) *= 2; \
76 if (malloced_yyss) \
77 { \
78 newss = really_call_realloc (*(SS), newsize * sizeof (short)); \
79 newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \
80 } \
81 else \
82 { \
83 newss = really_call_malloc (newsize * sizeof (short)); \
84 newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \
85 if (newss) \
86 memcpy (newss, *(SS), (SSSIZE)); \
87 if (newvs) \
88 memcpy (newvs, *(VS), (VSSIZE)); \
89 } \
90 if (!newss || !newvs) \
91 { \
92 yyerror (MSG); \
93 return 2; \
94 } \
95 *(SS) = newss; \
96 *(VS) = newvs; \
97 malloced_yyss = newss; \
98 malloced_yyvs = (void *) newvs; \
99} while (0)
100%}
101
102%start program
103
104%union {long itype; tree ttype; enum tree_code code;
105 location_t location; }
106
107/* All identifiers that are not reserved words
108 and are not declared typedefs in the current block */
109%token IDENTIFIER
110
111/* All identifiers that are declared typedefs in the current block.
112 In some contexts, they are treated just like IDENTIFIER,
113 but they can also serve as typespecs in declarations. */
114%token TYPENAME
115
116/* Reserved words that specify storage class.
117 yylval contains an IDENTIFIER_NODE which indicates which one. */
118%token SCSPEC /* Storage class other than static. */
119%token STATIC /* Static storage class. */
120
121/* Reserved words that specify type.
122 yylval contains an IDENTIFIER_NODE which indicates which one. */
123%token TYPESPEC
124
125/* Reserved words that qualify type: "const", "volatile", or "restrict".
126 yylval contains an IDENTIFIER_NODE which indicates which one. */
127%token TYPE_QUAL
128
129/* Character or numeric constants.
130 yylval is the node for the constant. */
131%token CONSTANT
132
133/* String constants in raw form.
134 yylval is a STRING_CST node. */
135
136%token STRING
137
138/* "...", used for functions with variable arglists. */
139%token ELLIPSIS
140
141/* the reserved words */
142/* SCO include files test "ASM", so use something else. */
143%token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
144%token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
145%token ATTRIBUTE EXTENSION LABEL
146%token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
147%token PTR_VALUE PTR_BASE PTR_EXTENT
148%token FUNC_NAME
149
150/* Add precedence rules to solve dangling else s/r conflict */
151%nonassoc IF
152%nonassoc ELSE
153
154/* Define the operator tokens and their precedences.
155 The value is an integer because, if used, it is the tree code
156 to use in the expression made from the operator. */
157
158%right <code> ASSIGN '='
159%right <code> '?' ':'
160%left <code> OROR
161%left <code> ANDAND
162%left <code> '|'
163%left <code> '^'
164%left <code> '&'
165%left <code> EQCOMPARE
166%left <code> ARITHCOMPARE
167%left <code> LSHIFT RSHIFT
168%left <code> '+' '-'
169%left <code> '*' '/' '%'
170%right <code> UNARY PLUSPLUS MINUSMINUS
171%left HYPERUNARY
172%left <code> POINTSAT '.' '(' '['
173
174/* The Objective-C keywords. These are included in C and in
175 Objective C, so that the token codes are the same in both. */
176%token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
177%token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
178%token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED
179%token OBJC_STRING
180
181%type <code> unop
182%type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
183%type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
184
185%type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
186%type <ttype> expr_no_commas cast_expr unary_expr primary STRING
187%type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
188%type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
189%type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
190%type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
191%type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
192%type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
193%type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
194%type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
195%type <ttype> declspecs_ts declspecs_nots
196%type <ttype> declspecs_ts_nosa declspecs_nots_nosa
197%type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
198%type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
199%type <ttype> typespec_reserved_nonattr typespec_reserved_attr
200%type <ttype> typespec_nonreserved_nonattr
201
202%type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_type_qual
203%type <ttype> initdecls notype_initdecls initdcl notype_initdcl
204%type <ttype> init maybeasm
205%type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
206%type <ttype> maybe_attribute attributes attribute attribute_list attrib
207%type <ttype> any_word
208
209%type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
210%type <ttype> do_stmt_start poplevel stmt label
211
212%type <ttype> c99_block_start c99_block_end
213%type <ttype> declarator
214%type <ttype> notype_declarator after_type_declarator
215%type <ttype> parm_declarator
216%type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
217%type <ttype> array_declarator
218
219%type <ttype> structsp_attr structsp_nonattr
220%type <ttype> component_decl_list component_decl_list2
221%type <ttype> component_decl components components_notype component_declarator
222%type <ttype> component_notype_declarator
223%type <ttype> enumlist enumerator
224%type <ttype> struct_head union_head enum_head
225%type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
226%type <ttype> direct_absdcl1 absdcl_maybe_attribute
227%type <ttype> xexpr parms parm firstparm identifiers
228
229%type <ttype> parmlist parmlist_1 parmlist_2
230%type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
231%type <ttype> identifiers_or_typenames
232
233%type <itype> setspecs setspecs_fp extension
234
235%type <location> save_location
236\f
237@@ifobjc
238/* the Objective-C nonterminals */
239
240%type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
241%type <ttype> methoddecl unaryselector keywordselector selector
242%type <ttype> keyworddecl receiver objcmessageexpr messageargs
243%type <ttype> keywordexpr keywordarglist keywordarg
244%type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
245%type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
246%type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
247
248%type <ttype> CLASSNAME OBJECTNAME OBJC_STRING
249
250%type <ttype> superclass
251%type <itype> objc_try_catch_stmt objc_finally_block
252@@end_ifobjc
253\f
254%{
255/* Number of statements (loosely speaking) and compound statements
256 seen so far. */
257static int stmt_count;
258static int compstmt_count;
259
260/* Input location of the end of the body of last simple_if;
261 used by the stmt-rule immediately after simple_if returns. */
262static location_t if_stmt_locus;
263
264
265/* List of types and structure classes of the current declaration. */
266static GTY(()) tree current_declspecs;
267static GTY(()) tree prefix_attributes;
268
269/* List of all the attributes applying to the identifier currently being
270 declared; includes prefix_attributes and possibly some more attributes
271 just after a comma. */
272static GTY(()) tree all_prefix_attributes;
273
274/* Stack of saved values of current_declspecs, prefix_attributes and
275 all_prefix_attributes. */
276static GTY(()) tree declspec_stack;
277
278/* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
279 should be called from the productions making use of setspecs. */
280#define PUSH_DECLSPEC_STACK \
281 do { \
282 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
283 all_prefix_attributes), \
284 current_declspecs, \
285 declspec_stack); \
286 } while (0)
287
288#define POP_DECLSPEC_STACK \
289 do { \
290 current_declspecs = TREE_VALUE (declspec_stack); \
291 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
292 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
293 declspec_stack = TREE_CHAIN (declspec_stack); \
294 } while (0)
295
296/* For __extension__, save/restore the warning flags which are
297 controlled by __extension__. */
298#define SAVE_EXT_FLAGS() \
299 (pedantic \
300 | (warn_pointer_arith << 1) \
301 | (warn_traditional << 2) \
302 | (flag_iso << 3))
303
304#define RESTORE_EXT_FLAGS(val) \
305 do { \
306 pedantic = val & 1; \
307 warn_pointer_arith = (val >> 1) & 1; \
308 warn_traditional = (val >> 2) & 1; \
309 flag_iso = (val >> 3) & 1; \
310 } while (0)
311
312@@ifobjc
313/* Objective-C specific parser/lexer information */
314
315static enum tree_code objc_inherit_code;
316static int objc_pq_context = 0, objc_public_flag = 0;
317
318/* The following flag is needed to contextualize ObjC lexical analysis.
319 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
320 an identifier to an ObjC class, even if a class with that name
321 exists. */
322static int objc_need_raw_identifier;
323#define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
324@@end_ifobjc
325
326@@ifc
327#define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
328@@end_ifc
329
330static bool parsing_iso_function_signature;
331
332/* Tell yyparse how to print a token's value, if yydebug is set. */
333
334#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
335
336static void yyprint (FILE *, int, YYSTYPE);
337static void yyerror (const char *);
338static int yylexname (void);
339static inline int _yylex (void);
340static int yylex (void);
341static void init_reswords (void);
342
343 /* Initialisation routine for this file. */
344void
345c_parse_init (void)
346{
347 init_reswords ();
348}
349
350%}
351\f
352%%
353program: /* empty */
354 { if (pedantic)
355 pedwarn ("ISO C forbids an empty source file");
356 }
357 | extdefs
358 ;
359
360/* the reason for the strange actions in this rule
361 is so that notype_initdecls when reached via datadef
362 can find a valid list of type and sc specs in $0. */
363
364extdefs:
365 {$<ttype>$ = NULL_TREE; } extdef
366 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
367 ;
368
369extdef:
370 extdef_1
371 { parsing_iso_function_signature = false; } /* Reset after any external definition. */
372 ;
373
374extdef_1:
375 fndef
376 | datadef
377@@ifobjc
378 | objcdef
379@@end_ifobjc
380 | ASM_KEYWORD '(' expr ')' ';'
381 { STRIP_NOPS ($3);
382 if ((TREE_CODE ($3) == ADDR_EXPR
383 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
384 || TREE_CODE ($3) == STRING_CST)
385 assemble_asm ($3);
386 else
387 error ("argument of `asm' is not a constant string"); }
388 | extension extdef
389 { RESTORE_EXT_FLAGS ($1); }
390 ;
391
392datadef:
393 setspecs notype_initdecls ';'
394 { if (pedantic)
395 error ("ISO C forbids data definition with no type or storage class");
396 else
397 warning ("data definition has no type or storage class");
398
399 POP_DECLSPEC_STACK; }
400 | declspecs_nots setspecs notype_initdecls ';'
401 { POP_DECLSPEC_STACK; }
402 | declspecs_ts setspecs initdecls ';'
403 { POP_DECLSPEC_STACK; }
404 | declspecs ';'
405 { shadow_tag ($1); }
406 | error ';'
407 | error '}'
408 | ';'
409 { if (pedantic)
410 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
411 ;
412\f
413fndef:
414 declspecs_ts setspecs declarator
415 { if (! start_function (current_declspecs, $3,
416 all_prefix_attributes))
417 YYERROR1;
418 }
419 old_style_parm_decls save_location
420 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
421 store_parm_decls (); }
422 compstmt_or_error
423 { finish_function ();
424 POP_DECLSPEC_STACK; }
425 | declspecs_ts setspecs declarator error
426 { POP_DECLSPEC_STACK; }
427 | declspecs_nots setspecs notype_declarator
428 { if (! start_function (current_declspecs, $3,
429 all_prefix_attributes))
430 YYERROR1;
431 }
432 old_style_parm_decls save_location
433 { DECL_SOURCE_LOCATION (current_function_decl) = $6;
434 store_parm_decls (); }
435 compstmt_or_error
436 { finish_function ();
437 POP_DECLSPEC_STACK; }
438 | declspecs_nots setspecs notype_declarator error
439 { POP_DECLSPEC_STACK; }
440 | setspecs notype_declarator
441 { if (! start_function (NULL_TREE, $2,
442 all_prefix_attributes))
443 YYERROR1;
444 }
445 old_style_parm_decls save_location
446 { DECL_SOURCE_LOCATION (current_function_decl) = $5;
447 store_parm_decls (); }
448 compstmt_or_error
449 { finish_function ();
450 POP_DECLSPEC_STACK; }
451 | setspecs notype_declarator error
452 { POP_DECLSPEC_STACK; }
453 ;
454
455identifier:
456 IDENTIFIER
457 | TYPENAME
458@@ifobjc
459 | OBJECTNAME
460 | CLASSNAME
461@@end_ifobjc
462 ;
463
464unop: '&'
465 { $$ = ADDR_EXPR; }
466 | '-'
467 { $$ = NEGATE_EXPR; }
468 | '+'
469 { $$ = CONVERT_EXPR;
470@@ifc
471 if (warn_traditional && !in_system_header)
472 warning ("traditional C rejects the unary plus operator");
473@@end_ifc
474 }
475 | PLUSPLUS
476 { $$ = PREINCREMENT_EXPR; }
477 | MINUSMINUS
478 { $$ = PREDECREMENT_EXPR; }
479 | '~'
480 { $$ = BIT_NOT_EXPR; }
481 | '!'
482 { $$ = TRUTH_NOT_EXPR; }
483 ;
484
485expr: nonnull_exprlist
486 { $$ = build_compound_expr ($1); }
487 ;
488
489exprlist:
490 /* empty */
491 { $$ = NULL_TREE; }
492 | nonnull_exprlist
493 ;
494
495nonnull_exprlist:
496 expr_no_commas
497 { $$ = build_tree_list (NULL_TREE, $1); }
498 | nonnull_exprlist ',' expr_no_commas
499 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
500 ;
501
502unary_expr:
503 primary
504 | '*' cast_expr %prec UNARY
505 { $$ = build_indirect_ref ($2, "unary *"); }
506 /* __extension__ turns off -pedantic for following primary. */
507 | extension cast_expr %prec UNARY
508 { $$ = $2;
509 RESTORE_EXT_FLAGS ($1); }
510 | unop cast_expr %prec UNARY
511 { $$ = build_unary_op ($1, $2, 0);
512 overflow_warning ($$); }
513 /* Refer to the address of a label as a pointer. */
514 | ANDAND identifier
515 { $$ = finish_label_address_expr ($2); }
516 | sizeof unary_expr %prec UNARY
517 { skip_evaluation--;
518 if (TREE_CODE ($2) == COMPONENT_REF
519 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
520 error ("`sizeof' applied to a bit-field");
521 $$ = c_sizeof (TREE_TYPE ($2)); }
522 | sizeof '(' typename ')' %prec HYPERUNARY
523 { skip_evaluation--;
524 $$ = c_sizeof (groktypename ($3)); }
525 | alignof unary_expr %prec UNARY
526 { skip_evaluation--;
527 $$ = c_alignof_expr ($2); }
528 | alignof '(' typename ')' %prec HYPERUNARY
529 { skip_evaluation--;
530 $$ = c_alignof (groktypename ($3)); }
531 | REALPART cast_expr %prec UNARY
532 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
533 | IMAGPART cast_expr %prec UNARY
534 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
535 ;
536
537sizeof:
538 SIZEOF { skip_evaluation++; }
539 ;
540
541alignof:
542 ALIGNOF { skip_evaluation++; }
543 ;
544
545typeof:
546 TYPEOF { skip_evaluation++; }
547 ;
548
549cast_expr:
550 unary_expr
551 | '(' typename ')' cast_expr %prec UNARY
552 { $$ = c_cast_expr ($2, $4); }
553 ;
554
555expr_no_commas:
556 cast_expr
557 | expr_no_commas '+' expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas '-' expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas '*' expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas '/' expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas '%' expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas LSHIFT expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas RSHIFT expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas ARITHCOMPARE expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas EQCOMPARE expr_no_commas
574 { $$ = parser_build_binary_op ($2, $1, $3); }
575 | expr_no_commas '&' expr_no_commas
576 { $$ = parser_build_binary_op ($2, $1, $3); }
577 | expr_no_commas '|' expr_no_commas
578 { $$ = parser_build_binary_op ($2, $1, $3); }
579 | expr_no_commas '^' expr_no_commas
580 { $$ = parser_build_binary_op ($2, $1, $3); }
581 | expr_no_commas ANDAND
582 { $1 = c_common_truthvalue_conversion
583 (default_conversion ($1));
584 skip_evaluation += $1 == truthvalue_false_node; }
585 expr_no_commas
586 { skip_evaluation -= $1 == truthvalue_false_node;
587 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
588 | expr_no_commas OROR
589 { $1 = c_common_truthvalue_conversion
590 (default_conversion ($1));
591 skip_evaluation += $1 == truthvalue_true_node; }
592 expr_no_commas
593 { skip_evaluation -= $1 == truthvalue_true_node;
594 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
595 | expr_no_commas '?'
596 { $1 = c_common_truthvalue_conversion
597 (default_conversion ($1));
598 skip_evaluation += $1 == truthvalue_false_node; }
599 expr ':'
600 { skip_evaluation += (($1 == truthvalue_true_node)
601 - ($1 == truthvalue_false_node)); }
602 expr_no_commas
603 { skip_evaluation -= $1 == truthvalue_true_node;
604 $$ = build_conditional_expr ($1, $4, $7); }
605 | expr_no_commas '?'
606 { if (pedantic)
607 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
608 /* Make sure first operand is calculated only once. */
609 $<ttype>2 = save_expr ($1);
610 $1 = c_common_truthvalue_conversion
611 (default_conversion ($<ttype>2));
612 skip_evaluation += $1 == truthvalue_true_node; }
613 ':' expr_no_commas
614 { skip_evaluation -= $1 == truthvalue_true_node;
615 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
616 | expr_no_commas '=' expr_no_commas
617 { char class;
618 $$ = build_modify_expr ($1, NOP_EXPR, $3);
619 class = TREE_CODE_CLASS (TREE_CODE ($$));
620 if (IS_EXPR_CODE_CLASS (class))
621 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
622 }
623 | expr_no_commas ASSIGN expr_no_commas
624 { char class;
625 $$ = build_modify_expr ($1, $2, $3);
626 /* This inhibits warnings in
627 c_common_truthvalue_conversion. */
628 class = TREE_CODE_CLASS (TREE_CODE ($$));
629 if (IS_EXPR_CODE_CLASS (class))
630 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
631 }
632 ;
633
634primary:
635 IDENTIFIER
636 {
637 if (yychar == YYEMPTY)
638 yychar = YYLEX;
639 $$ = build_external_ref ($1, yychar == '(');
640 }
641 | CONSTANT
642 | STRING
643 | FUNC_NAME
644 { $$ = fname_decl (C_RID_CODE ($$), $$); }
645 | '(' typename ')' '{'
646 { start_init (NULL_TREE, NULL, 0);
647 $2 = groktypename ($2);
648 really_start_incremental_init ($2); }
649 initlist_maybe_comma '}' %prec UNARY
650 { tree constructor = pop_init_level (0);
651 tree type = $2;
652 finish_init ();
653
654 if (pedantic && ! flag_isoc99)
655 pedwarn ("ISO C90 forbids compound literals");
656 $$ = build_compound_literal (type, constructor);
657 }
658 | '(' expr ')'
659 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
660 if (IS_EXPR_CODE_CLASS (class))
661 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
662 $$ = $2; }
663 | '(' error ')'
664 { $$ = error_mark_node; }
665 | compstmt_primary_start compstmt_nostart ')'
666 { tree saved_last_tree;
667
668 if (pedantic)
669 pedwarn ("ISO C forbids braced-groups within expressions");
670 saved_last_tree = COMPOUND_BODY ($1);
671 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
672 last_tree = saved_last_tree;
673 TREE_CHAIN (last_tree) = NULL_TREE;
674 if (!last_expr_type)
675 last_expr_type = void_type_node;
676 $$ = build1 (STMT_EXPR, last_expr_type, $1);
677 TREE_SIDE_EFFECTS ($$) = 1;
678 }
679 | compstmt_primary_start error ')'
680 {
681 last_tree = COMPOUND_BODY ($1);
682 TREE_CHAIN (last_tree) = NULL_TREE;
683 $$ = error_mark_node;
684 }
685 | primary '(' exprlist ')' %prec '.'
686 { $$ = build_function_call ($1, $3); }
687 | VA_ARG '(' expr_no_commas ',' typename ')'
688 { $$ = build_va_arg ($3, groktypename ($5)); }
689
690 | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
691 {
692 tree c;
693
694 c = fold ($3);
695 STRIP_NOPS (c);
696 if (TREE_CODE (c) != INTEGER_CST)
697 error ("first argument to __builtin_choose_expr not a constant");
698 $$ = integer_zerop (c) ? $7 : $5;
699 }
700 | TYPES_COMPATIBLE_P '(' typename ',' typename ')'
701 {
702 tree e1, e2;
703
704 e1 = TYPE_MAIN_VARIANT (groktypename ($3));
705 e2 = TYPE_MAIN_VARIANT (groktypename ($5));
706
707 $$ = comptypes (e1, e2, COMPARE_STRICT)
708 ? build_int_2 (1, 0) : build_int_2 (0, 0);
709 }
710 | primary '[' expr ']' %prec '.'
711 { $$ = build_array_ref ($1, $3); }
712 | primary '.' identifier
713 {
714@@ifobjc
715 if (!is_public ($1, $3))
716 $$ = error_mark_node;
717 else
718@@end_ifobjc
719 $$ = build_component_ref ($1, $3);
720 }
721 | primary POINTSAT identifier
722 {
723 tree expr = build_indirect_ref ($1, "->");
724
725@@ifobjc
726 if (!is_public (expr, $3))
727 $$ = error_mark_node;
728 else
729@@end_ifobjc
730 $$ = build_component_ref (expr, $3);
731 }
732 | primary PLUSPLUS
733 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
734 | primary MINUSMINUS
735 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
736@@ifobjc
737 | objcmessageexpr
738 { $$ = build_message_expr ($1); }
739 | objcselectorexpr
740 { $$ = build_selector_expr ($1); }
741 | objcprotocolexpr
742 { $$ = build_protocol_expr ($1); }
743 | objcencodeexpr
744 { $$ = build_encode_expr ($1); }
745 | OBJC_STRING
746 { $$ = build_objc_string_object ($1); }
747@@end_ifobjc
748 ;
749
750old_style_parm_decls:
751 old_style_parm_decls_1
752 {
753 parsing_iso_function_signature = false; /* Reset after decls. */
754 }
755 ;
756
757old_style_parm_decls_1:
758 /* empty */
759 {
760 if (warn_traditional && !in_system_header
761 && parsing_iso_function_signature)
762 warning ("traditional C rejects ISO C style function definitions");
763 if (warn_old_style_definition && !in_system_header
764 && !parsing_iso_function_signature)
765 warning ("old-style parameter declaration");
766 parsing_iso_function_signature = false; /* Reset after warning. */
767 }
768 | datadecls
769 {
770 if (warn_old_style_definition && !in_system_header)
771 warning ("old-style parameter declaration");
772 }
773 ;
774
775/* The following are analogous to lineno_decl, decls and decl
776 except that they do not allow nested functions.
777 They are used for old-style parm decls. */
778lineno_datadecl:
779 save_location datadecl
780 { }
781 ;
782
783datadecls:
784 lineno_datadecl
785 | errstmt
786 | datadecls lineno_datadecl
787 | lineno_datadecl errstmt
788 ;
789
790/* We don't allow prefix attributes here because they cause reduce/reduce
791 conflicts: we can't know whether we're parsing a function decl with
792 attribute suffix, or function defn with attribute prefix on first old
793 style parm. */
794datadecl:
795 declspecs_ts_nosa setspecs initdecls ';'
796 { POP_DECLSPEC_STACK; }
797 | declspecs_nots_nosa setspecs notype_initdecls ';'
798 { POP_DECLSPEC_STACK; }
799 | declspecs_ts_nosa ';'
800 { shadow_tag_warned ($1, 1);
801 pedwarn ("empty declaration"); }
802 | declspecs_nots_nosa ';'
803 { pedwarn ("empty declaration"); }
804 ;
805
806/* This combination which saves a lineno before a decl
807 is the normal thing to use, rather than decl itself.
808 This is to avoid shift/reduce conflicts in contexts
809 where statement labels are allowed. */
810lineno_decl:
811 save_location decl
812 { }
813 ;
814
815/* records the type and storage class specs to use for processing
816 the declarators that follow.
817 Maintains a stack of outer-level values of current_declspecs,
818 for the sake of parm declarations nested in function declarators. */
819setspecs: /* empty */
820 { pending_xref_error ();
821 PUSH_DECLSPEC_STACK;
822 split_specs_attrs ($<ttype>0,
823 &current_declspecs, &prefix_attributes);
824 all_prefix_attributes = prefix_attributes; }
825 ;
826
827/* Possibly attributes after a comma, which should reset all_prefix_attributes
828 to prefix_attributes with these ones chained on the front. */
829maybe_resetattrs:
830 maybe_attribute
831 { all_prefix_attributes = chainon ($1, prefix_attributes); }
832 ;
833
834decl:
835 declspecs_ts setspecs initdecls ';'
836 { POP_DECLSPEC_STACK; }
837 | declspecs_nots setspecs notype_initdecls ';'
838 { POP_DECLSPEC_STACK; }
839 | declspecs_ts setspecs nested_function
840 { POP_DECLSPEC_STACK; }
841 | declspecs_nots setspecs notype_nested_function
842 { POP_DECLSPEC_STACK; }
843 | declspecs ';'
844 { shadow_tag ($1); }
845 | extension decl
846 { RESTORE_EXT_FLAGS ($1); }
847 ;
848
849/* A list of declaration specifiers. These are:
850
851 - Storage class specifiers (scspec), which for GCC currently includes
852 function specifiers ("inline").
853
854 - Type specifiers (typespec_*).
855
856 - Type qualifiers (TYPE_QUAL).
857
858 - Attribute specifier lists (attributes).
859
860 These are stored as a TREE_LIST; the head of the list is the last
861 item in the specifier list. Each entry in the list has either a
862 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
863 is a single other specifier or qualifier; and a TREE_CHAIN that is the
864 rest of the list. TREE_STATIC is set on the list if something other
865 than a storage class specifier or attribute has been seen; this is used
866 to warn for the obsolescent usage of storage class specifiers other than
867 at the start of the list. (Doing this properly would require function
868 specifiers to be handled separately from storage class specifiers.)
869
870 The various cases below are classified according to:
871
872 (a) Whether a storage class specifier is included or not; some
873 places in the grammar disallow storage class specifiers (_sc or _nosc).
874
875 (b) Whether a type specifier has been seen; after a type specifier,
876 a typedef name is an identifier to redeclare (_ts or _nots).
877
878 (c) Whether the list starts with an attribute; in certain places,
879 the grammar requires specifiers that don't start with an attribute
880 (_sa or _nosa).
881
882 (d) Whether the list ends with an attribute (or a specifier such that
883 any following attribute would have been parsed as part of that specifier);
884 this avoids shift-reduce conflicts in the parsing of attributes
885 (_ea or _noea).
886
887 TODO:
888
889 (i) Distinguish between function specifiers and storage class specifiers,
890 at least for the purpose of warnings about obsolescent usage.
891
892 (ii) Halve the number of productions here by eliminating the _sc/_nosc
893 distinction and instead checking where required that storage class
894 specifiers aren't present. */
895
896/* Declspecs which contain at least one type specifier or typedef name.
897 (Just `const' or `volatile' is not enough.)
898 A typedef'd name following these is taken as a name to be declared.
899 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
900
901declspecs_nosc_nots_nosa_noea:
902 TYPE_QUAL
903 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
904 TREE_STATIC ($$) = 1; }
905 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
906 { $$ = tree_cons (NULL_TREE, $2, $1);
907 TREE_STATIC ($$) = 1; }
908 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
909 { $$ = tree_cons (NULL_TREE, $2, $1);
910 TREE_STATIC ($$) = 1; }
911 ;
912
913declspecs_nosc_nots_nosa_ea:
914 declspecs_nosc_nots_nosa_noea attributes
915 { $$ = tree_cons ($2, NULL_TREE, $1);
916 TREE_STATIC ($$) = TREE_STATIC ($1); }
917 ;
918
919declspecs_nosc_nots_sa_noea:
920 declspecs_nosc_nots_sa_noea TYPE_QUAL
921 { $$ = tree_cons (NULL_TREE, $2, $1);
922 TREE_STATIC ($$) = 1; }
923 | declspecs_nosc_nots_sa_ea TYPE_QUAL
924 { $$ = tree_cons (NULL_TREE, $2, $1);
925 TREE_STATIC ($$) = 1; }
926 ;
927
928declspecs_nosc_nots_sa_ea:
929 attributes
930 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
931 TREE_STATIC ($$) = 0; }
932 | declspecs_nosc_nots_sa_noea attributes
933 { $$ = tree_cons ($2, NULL_TREE, $1);
934 TREE_STATIC ($$) = TREE_STATIC ($1); }
935 ;
936
937declspecs_nosc_ts_nosa_noea:
938 typespec_nonattr
939 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
940 TREE_STATIC ($$) = 1; }
941 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
942 { $$ = tree_cons (NULL_TREE, $2, $1);
943 TREE_STATIC ($$) = 1; }
944 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
945 { $$ = tree_cons (NULL_TREE, $2, $1);
946 TREE_STATIC ($$) = 1; }
947 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
948 { $$ = tree_cons (NULL_TREE, $2, $1);
949 TREE_STATIC ($$) = 1; }
950 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
951 { $$ = tree_cons (NULL_TREE, $2, $1);
952 TREE_STATIC ($$) = 1; }
953 | declspecs_nosc_nots_nosa_noea typespec_nonattr
954 { $$ = tree_cons (NULL_TREE, $2, $1);
955 TREE_STATIC ($$) = 1; }
956 | declspecs_nosc_nots_nosa_ea typespec_nonattr
957 { $$ = tree_cons (NULL_TREE, $2, $1);
958 TREE_STATIC ($$) = 1; }
959 ;
960
961declspecs_nosc_ts_nosa_ea:
962 typespec_attr
963 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
964 TREE_STATIC ($$) = 1; }
965 | declspecs_nosc_ts_nosa_noea attributes
966 { $$ = tree_cons ($2, NULL_TREE, $1);
967 TREE_STATIC ($$) = TREE_STATIC ($1); }
968 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
969 { $$ = tree_cons (NULL_TREE, $2, $1);
970 TREE_STATIC ($$) = 1; }
971 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
972 { $$ = tree_cons (NULL_TREE, $2, $1);
973 TREE_STATIC ($$) = 1; }
974 | declspecs_nosc_nots_nosa_noea typespec_attr
975 { $$ = tree_cons (NULL_TREE, $2, $1);
976 TREE_STATIC ($$) = 1; }
977 | declspecs_nosc_nots_nosa_ea typespec_attr
978 { $$ = tree_cons (NULL_TREE, $2, $1);
979 TREE_STATIC ($$) = 1; }
980 ;
981
982declspecs_nosc_ts_sa_noea:
983 declspecs_nosc_ts_sa_noea TYPE_QUAL
984 { $$ = tree_cons (NULL_TREE, $2, $1);
985 TREE_STATIC ($$) = 1; }
986 | declspecs_nosc_ts_sa_ea TYPE_QUAL
987 { $$ = tree_cons (NULL_TREE, $2, $1);
988 TREE_STATIC ($$) = 1; }
989 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
990 { $$ = tree_cons (NULL_TREE, $2, $1);
991 TREE_STATIC ($$) = 1; }
992 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
993 { $$ = tree_cons (NULL_TREE, $2, $1);
994 TREE_STATIC ($$) = 1; }
995 | declspecs_nosc_nots_sa_noea typespec_nonattr
996 { $$ = tree_cons (NULL_TREE, $2, $1);
997 TREE_STATIC ($$) = 1; }
998 | declspecs_nosc_nots_sa_ea typespec_nonattr
999 { $$ = tree_cons (NULL_TREE, $2, $1);
1000 TREE_STATIC ($$) = 1; }
1001 ;
1002
1003declspecs_nosc_ts_sa_ea:
1004 declspecs_nosc_ts_sa_noea attributes
1005 { $$ = tree_cons ($2, NULL_TREE, $1);
1006 TREE_STATIC ($$) = TREE_STATIC ($1); }
1007 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1008 { $$ = tree_cons (NULL_TREE, $2, $1);
1009 TREE_STATIC ($$) = 1; }
1010 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1011 { $$ = tree_cons (NULL_TREE, $2, $1);
1012 TREE_STATIC ($$) = 1; }
1013 | declspecs_nosc_nots_sa_noea typespec_attr
1014 { $$ = tree_cons (NULL_TREE, $2, $1);
1015 TREE_STATIC ($$) = 1; }
1016 | declspecs_nosc_nots_sa_ea typespec_attr
1017 { $$ = tree_cons (NULL_TREE, $2, $1);
1018 TREE_STATIC ($$) = 1; }
1019 ;
1020
1021declspecs_sc_nots_nosa_noea:
1022 scspec
1023 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1024 TREE_STATIC ($$) = 0; }
1025 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1026 { $$ = tree_cons (NULL_TREE, $2, $1);
1027 TREE_STATIC ($$) = 1; }
1028 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1029 { $$ = tree_cons (NULL_TREE, $2, $1);
1030 TREE_STATIC ($$) = 1; }
1031 | declspecs_nosc_nots_nosa_noea scspec
1032 { if (extra_warnings && TREE_STATIC ($1))
1033 warning ("`%s' is not at beginning of declaration",
1034 IDENTIFIER_POINTER ($2));
1035 $$ = tree_cons (NULL_TREE, $2, $1);
1036 TREE_STATIC ($$) = TREE_STATIC ($1); }
1037 | declspecs_nosc_nots_nosa_ea scspec
1038 { if (extra_warnings && TREE_STATIC ($1))
1039 warning ("`%s' is not at beginning of declaration",
1040 IDENTIFIER_POINTER ($2));
1041 $$ = tree_cons (NULL_TREE, $2, $1);
1042 TREE_STATIC ($$) = TREE_STATIC ($1); }
1043 | declspecs_sc_nots_nosa_noea scspec
1044 { if (extra_warnings && TREE_STATIC ($1))
1045 warning ("`%s' is not at beginning of declaration",
1046 IDENTIFIER_POINTER ($2));
1047 $$ = tree_cons (NULL_TREE, $2, $1);
1048 TREE_STATIC ($$) = TREE_STATIC ($1); }
1049 | declspecs_sc_nots_nosa_ea scspec
1050 { if (extra_warnings && TREE_STATIC ($1))
1051 warning ("`%s' is not at beginning of declaration",
1052 IDENTIFIER_POINTER ($2));
1053 $$ = tree_cons (NULL_TREE, $2, $1);
1054 TREE_STATIC ($$) = TREE_STATIC ($1); }
1055 ;
1056
1057declspecs_sc_nots_nosa_ea:
1058 declspecs_sc_nots_nosa_noea attributes
1059 { $$ = tree_cons ($2, NULL_TREE, $1);
1060 TREE_STATIC ($$) = TREE_STATIC ($1); }
1061 ;
1062
1063declspecs_sc_nots_sa_noea:
1064 declspecs_sc_nots_sa_noea TYPE_QUAL
1065 { $$ = tree_cons (NULL_TREE, $2, $1);
1066 TREE_STATIC ($$) = 1; }
1067 | declspecs_sc_nots_sa_ea TYPE_QUAL
1068 { $$ = tree_cons (NULL_TREE, $2, $1);
1069 TREE_STATIC ($$) = 1; }
1070 | declspecs_nosc_nots_sa_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_nosc_nots_sa_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 | declspecs_sc_nots_sa_noea scspec
1083 { if (extra_warnings && TREE_STATIC ($1))
1084 warning ("`%s' is not at beginning of declaration",
1085 IDENTIFIER_POINTER ($2));
1086 $$ = tree_cons (NULL_TREE, $2, $1);
1087 TREE_STATIC ($$) = TREE_STATIC ($1); }
1088 | declspecs_sc_nots_sa_ea scspec
1089 { if (extra_warnings && TREE_STATIC ($1))
1090 warning ("`%s' is not at beginning of declaration",
1091 IDENTIFIER_POINTER ($2));
1092 $$ = tree_cons (NULL_TREE, $2, $1);
1093 TREE_STATIC ($$) = TREE_STATIC ($1); }
1094 ;
1095
1096declspecs_sc_nots_sa_ea:
1097 declspecs_sc_nots_sa_noea attributes
1098 { $$ = tree_cons ($2, NULL_TREE, $1);
1099 TREE_STATIC ($$) = TREE_STATIC ($1); }
1100 ;
1101
1102declspecs_sc_ts_nosa_noea:
1103 declspecs_sc_ts_nosa_noea TYPE_QUAL
1104 { $$ = tree_cons (NULL_TREE, $2, $1);
1105 TREE_STATIC ($$) = 1; }
1106 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1107 { $$ = tree_cons (NULL_TREE, $2, $1);
1108 TREE_STATIC ($$) = 1; }
1109 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1110 { $$ = tree_cons (NULL_TREE, $2, $1);
1111 TREE_STATIC ($$) = 1; }
1112 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1113 { $$ = tree_cons (NULL_TREE, $2, $1);
1114 TREE_STATIC ($$) = 1; }
1115 | declspecs_sc_nots_nosa_noea typespec_nonattr
1116 { $$ = tree_cons (NULL_TREE, $2, $1);
1117 TREE_STATIC ($$) = 1; }
1118 | declspecs_sc_nots_nosa_ea typespec_nonattr
1119 { $$ = tree_cons (NULL_TREE, $2, $1);
1120 TREE_STATIC ($$) = 1; }
1121 | declspecs_nosc_ts_nosa_noea scspec
1122 { if (extra_warnings && TREE_STATIC ($1))
1123 warning ("`%s' is not at beginning of declaration",
1124 IDENTIFIER_POINTER ($2));
1125 $$ = tree_cons (NULL_TREE, $2, $1);
1126 TREE_STATIC ($$) = TREE_STATIC ($1); }
1127 | declspecs_nosc_ts_nosa_ea scspec
1128 { if (extra_warnings && TREE_STATIC ($1))
1129 warning ("`%s' is not at beginning of declaration",
1130 IDENTIFIER_POINTER ($2));
1131 $$ = tree_cons (NULL_TREE, $2, $1);
1132 TREE_STATIC ($$) = TREE_STATIC ($1); }
1133 | declspecs_sc_ts_nosa_noea scspec
1134 { if (extra_warnings && TREE_STATIC ($1))
1135 warning ("`%s' is not at beginning of declaration",
1136 IDENTIFIER_POINTER ($2));
1137 $$ = tree_cons (NULL_TREE, $2, $1);
1138 TREE_STATIC ($$) = TREE_STATIC ($1); }
1139 | declspecs_sc_ts_nosa_ea scspec
1140 { if (extra_warnings && TREE_STATIC ($1))
1141 warning ("`%s' is not at beginning of declaration",
1142 IDENTIFIER_POINTER ($2));
1143 $$ = tree_cons (NULL_TREE, $2, $1);
1144 TREE_STATIC ($$) = TREE_STATIC ($1); }
1145 ;
1146
1147declspecs_sc_ts_nosa_ea:
1148 declspecs_sc_ts_nosa_noea attributes
1149 { $$ = tree_cons ($2, NULL_TREE, $1);
1150 TREE_STATIC ($$) = TREE_STATIC ($1); }
1151 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1152 { $$ = tree_cons (NULL_TREE, $2, $1);
1153 TREE_STATIC ($$) = 1; }
1154 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1155 { $$ = tree_cons (NULL_TREE, $2, $1);
1156 TREE_STATIC ($$) = 1; }
1157 | declspecs_sc_nots_nosa_noea typespec_attr
1158 { $$ = tree_cons (NULL_TREE, $2, $1);
1159 TREE_STATIC ($$) = 1; }
1160 | declspecs_sc_nots_nosa_ea typespec_attr
1161 { $$ = tree_cons (NULL_TREE, $2, $1);
1162 TREE_STATIC ($$) = 1; }
1163 ;
1164
1165declspecs_sc_ts_sa_noea:
1166 declspecs_sc_ts_sa_noea TYPE_QUAL
1167 { $$ = tree_cons (NULL_TREE, $2, $1);
1168 TREE_STATIC ($$) = 1; }
1169 | declspecs_sc_ts_sa_ea TYPE_QUAL
1170 { $$ = tree_cons (NULL_TREE, $2, $1);
1171 TREE_STATIC ($$) = 1; }
1172 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1173 { $$ = tree_cons (NULL_TREE, $2, $1);
1174 TREE_STATIC ($$) = 1; }
1175 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1176 { $$ = tree_cons (NULL_TREE, $2, $1);
1177 TREE_STATIC ($$) = 1; }
1178 | declspecs_sc_nots_sa_noea typespec_nonattr
1179 { $$ = tree_cons (NULL_TREE, $2, $1);
1180 TREE_STATIC ($$) = 1; }
1181 | declspecs_sc_nots_sa_ea typespec_nonattr
1182 { $$ = tree_cons (NULL_TREE, $2, $1);
1183 TREE_STATIC ($$) = 1; }
1184 | declspecs_nosc_ts_sa_noea scspec
1185 { if (extra_warnings && TREE_STATIC ($1))
1186 warning ("`%s' is not at beginning of declaration",
1187 IDENTIFIER_POINTER ($2));
1188 $$ = tree_cons (NULL_TREE, $2, $1);
1189 TREE_STATIC ($$) = TREE_STATIC ($1); }
1190 | declspecs_nosc_ts_sa_ea scspec
1191 { if (extra_warnings && TREE_STATIC ($1))
1192 warning ("`%s' is not at beginning of declaration",
1193 IDENTIFIER_POINTER ($2));
1194 $$ = tree_cons (NULL_TREE, $2, $1);
1195 TREE_STATIC ($$) = TREE_STATIC ($1); }
1196 | declspecs_sc_ts_sa_noea scspec
1197 { if (extra_warnings && TREE_STATIC ($1))
1198 warning ("`%s' is not at beginning of declaration",
1199 IDENTIFIER_POINTER ($2));
1200 $$ = tree_cons (NULL_TREE, $2, $1);
1201 TREE_STATIC ($$) = TREE_STATIC ($1); }
1202 | declspecs_sc_ts_sa_ea scspec
1203 { if (extra_warnings && TREE_STATIC ($1))
1204 warning ("`%s' is not at beginning of declaration",
1205 IDENTIFIER_POINTER ($2));
1206 $$ = tree_cons (NULL_TREE, $2, $1);
1207 TREE_STATIC ($$) = TREE_STATIC ($1); }
1208 ;
1209
1210declspecs_sc_ts_sa_ea:
1211 declspecs_sc_ts_sa_noea attributes
1212 { $$ = tree_cons ($2, NULL_TREE, $1);
1213 TREE_STATIC ($$) = TREE_STATIC ($1); }
1214 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1215 { $$ = tree_cons (NULL_TREE, $2, $1);
1216 TREE_STATIC ($$) = 1; }
1217 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1218 { $$ = tree_cons (NULL_TREE, $2, $1);
1219 TREE_STATIC ($$) = 1; }
1220 | declspecs_sc_nots_sa_noea typespec_attr
1221 { $$ = tree_cons (NULL_TREE, $2, $1);
1222 TREE_STATIC ($$) = 1; }
1223 | declspecs_sc_nots_sa_ea typespec_attr
1224 { $$ = tree_cons (NULL_TREE, $2, $1);
1225 TREE_STATIC ($$) = 1; }
1226 ;
1227
1228/* Particular useful classes of declspecs. */
1229declspecs_ts:
1230 declspecs_nosc_ts_nosa_noea
1231 | declspecs_nosc_ts_nosa_ea
1232 | declspecs_nosc_ts_sa_noea
1233 | declspecs_nosc_ts_sa_ea
1234 | declspecs_sc_ts_nosa_noea
1235 | declspecs_sc_ts_nosa_ea
1236 | declspecs_sc_ts_sa_noea
1237 | declspecs_sc_ts_sa_ea
1238 ;
1239
1240declspecs_nots:
1241 declspecs_nosc_nots_nosa_noea
1242 | declspecs_nosc_nots_nosa_ea
1243 | declspecs_nosc_nots_sa_noea
1244 | declspecs_nosc_nots_sa_ea
1245 | declspecs_sc_nots_nosa_noea
1246 | declspecs_sc_nots_nosa_ea
1247 | declspecs_sc_nots_sa_noea
1248 | declspecs_sc_nots_sa_ea
1249 ;
1250
1251declspecs_ts_nosa:
1252 declspecs_nosc_ts_nosa_noea
1253 | declspecs_nosc_ts_nosa_ea
1254 | declspecs_sc_ts_nosa_noea
1255 | declspecs_sc_ts_nosa_ea
1256 ;
1257
1258declspecs_nots_nosa:
1259 declspecs_nosc_nots_nosa_noea
1260 | declspecs_nosc_nots_nosa_ea
1261 | declspecs_sc_nots_nosa_noea
1262 | declspecs_sc_nots_nosa_ea
1263 ;
1264
1265declspecs_nosc_ts:
1266 declspecs_nosc_ts_nosa_noea
1267 | declspecs_nosc_ts_nosa_ea
1268 | declspecs_nosc_ts_sa_noea
1269 | declspecs_nosc_ts_sa_ea
1270 ;
1271
1272declspecs_nosc_nots:
1273 declspecs_nosc_nots_nosa_noea
1274 | declspecs_nosc_nots_nosa_ea
1275 | declspecs_nosc_nots_sa_noea
1276 | declspecs_nosc_nots_sa_ea
1277 ;
1278
1279declspecs_nosc:
1280 declspecs_nosc_ts_nosa_noea
1281 | declspecs_nosc_ts_nosa_ea
1282 | declspecs_nosc_ts_sa_noea
1283 | declspecs_nosc_ts_sa_ea
1284 | declspecs_nosc_nots_nosa_noea
1285 | declspecs_nosc_nots_nosa_ea
1286 | declspecs_nosc_nots_sa_noea
1287 | declspecs_nosc_nots_sa_ea
1288 ;
1289
1290declspecs:
1291 declspecs_nosc_nots_nosa_noea
1292 | declspecs_nosc_nots_nosa_ea
1293 | declspecs_nosc_nots_sa_noea
1294 | declspecs_nosc_nots_sa_ea
1295 | declspecs_nosc_ts_nosa_noea
1296 | declspecs_nosc_ts_nosa_ea
1297 | declspecs_nosc_ts_sa_noea
1298 | declspecs_nosc_ts_sa_ea
1299 | declspecs_sc_nots_nosa_noea
1300 | declspecs_sc_nots_nosa_ea
1301 | declspecs_sc_nots_sa_noea
1302 | declspecs_sc_nots_sa_ea
1303 | declspecs_sc_ts_nosa_noea
1304 | declspecs_sc_ts_nosa_ea
1305 | declspecs_sc_ts_sa_noea
1306 | declspecs_sc_ts_sa_ea
1307 ;
1308
1309/* A (possibly empty) sequence of type qualifiers and attributes. */
1310maybe_type_quals_attrs:
1311 /* empty */
1312 { $$ = NULL_TREE; }
1313 | declspecs_nosc_nots
1314 { $$ = $1; }
1315 ;
1316
1317/* A type specifier (but not a type qualifier).
1318 Once we have seen one of these in a declaration,
1319 if a typedef name appears then it is being redeclared.
1320
1321 The _reserved versions start with a reserved word and may appear anywhere
1322 in the declaration specifiers; the _nonreserved versions may only
1323 appear before any other type specifiers, and after that are (if names)
1324 being redeclared.
1325
1326 FIXME: should the _nonreserved version be restricted to names being
1327 redeclared only? The other entries there relate only the GNU extensions
1328 and Objective C, and are historically parsed thus, and don't make sense
1329 after other type specifiers, but it might be cleaner to count them as
1330 _reserved.
1331
1332 _attr means: specifiers that either end with attributes,
1333 or are such that any following attributes would
1334 be parsed as part of the specifier.
1335
1336 _nonattr: specifiers. */
1337
1338typespec_nonattr:
1339 typespec_reserved_nonattr
1340 | typespec_nonreserved_nonattr
1341 ;
1342
1343typespec_attr:
1344 typespec_reserved_attr
1345 ;
1346
1347typespec_reserved_nonattr:
1348 TYPESPEC
1349 { OBJC_NEED_RAW_IDENTIFIER (1); }
1350 | structsp_nonattr
1351 ;
1352
1353typespec_reserved_attr:
1354 structsp_attr
1355 ;
1356
1357typespec_nonreserved_nonattr:
1358 TYPENAME
1359 { /* For a typedef name, record the meaning, not the name.
1360 In case of `foo foo, bar;'. */
1361 $$ = lookup_name ($1); }
1362@@ifobjc
1363 | CLASSNAME protocolrefs
1364 { $$ = get_static_reference ($1, $2); }
1365 | OBJECTNAME protocolrefs
1366 { $$ = get_object_reference ($2); }
1367
1368/* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1369 - nisse@lysator.liu.se */
1370 | non_empty_protocolrefs
1371 { $$ = get_object_reference ($1); }
1372@@end_ifobjc
1373 | typeof '(' expr ')'
1374 { skip_evaluation--;
1375 if (TREE_CODE ($3) == COMPONENT_REF
1376 && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
1377 error ("`typeof' applied to a bit-field");
1378 $$ = TREE_TYPE ($3); }
1379 | typeof '(' typename ')'
1380 { skip_evaluation--; $$ = groktypename ($3); }
1381 ;
1382
1383/* typespec_nonreserved_attr does not exist. */
1384
1385initdecls:
1386 initdcl
1387 | initdecls ',' maybe_resetattrs initdcl
1388 ;
1389
1390notype_initdecls:
1391 notype_initdcl
1392 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1393 ;
1394
1395maybeasm:
1396 /* empty */
1397 { $$ = NULL_TREE; }
1398 | ASM_KEYWORD '(' STRING ')'
1399 { $$ = $3; }
1400 ;
1401
1402initdcl:
1403 declarator maybeasm maybe_attribute '='
1404 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1405 chainon ($3, all_prefix_attributes));
1406 start_init ($<ttype>$, $2, global_bindings_p ()); }
1407 init
1408/* Note how the declaration of the variable is in effect while its init is parsed! */
1409 { finish_init ();
1410 finish_decl ($<ttype>5, $6, $2); }
1411 | declarator maybeasm maybe_attribute
1412 { tree d = start_decl ($1, current_declspecs, 0,
1413 chainon ($3, all_prefix_attributes));
1414 finish_decl (d, NULL_TREE, $2);
1415 }
1416 ;
1417
1418notype_initdcl:
1419 notype_declarator maybeasm maybe_attribute '='
1420 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1421 chainon ($3, all_prefix_attributes));
1422 start_init ($<ttype>$, $2, global_bindings_p ()); }
1423 init
1424/* Note how the declaration of the variable is in effect while its init is parsed! */
1425 { finish_init ();
1426 finish_decl ($<ttype>5, $6, $2); }
1427 | notype_declarator maybeasm maybe_attribute
1428 { tree d = start_decl ($1, current_declspecs, 0,
1429 chainon ($3, all_prefix_attributes));
1430 finish_decl (d, NULL_TREE, $2); }
1431 ;
1432/* the * rules are dummies to accept the Apollo extended syntax
1433 so that the header files compile. */
1434maybe_attribute:
1435 /* empty */
1436 { $$ = NULL_TREE; }
1437 | attributes
1438 { $$ = $1; }
1439 ;
1440
1441attributes:
1442 attribute
1443 { $$ = $1; }
1444 | attributes attribute
1445 { $$ = chainon ($1, $2); }
1446 ;
1447
1448attribute:
1449 ATTRIBUTE '(' '(' attribute_list ')' ')'
1450 { $$ = $4; }
1451 ;
1452
1453attribute_list:
1454 attrib
1455 { $$ = $1; }
1456 | attribute_list ',' attrib
1457 { $$ = chainon ($1, $3); }
1458 ;
1459
1460attrib:
1461 /* empty */
1462 { $$ = NULL_TREE; }
1463 | any_word
1464 { $$ = build_tree_list ($1, NULL_TREE); }
1465 | any_word '(' IDENTIFIER ')'
1466 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1467 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1468 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1469 | any_word '(' exprlist ')'
1470 { $$ = build_tree_list ($1, $3); }
1471 ;
1472
1473/* This still leaves out most reserved keywords,
1474 shouldn't we include them? */
1475
1476any_word:
1477 identifier
1478 | scspec
1479 | TYPESPEC
1480 | TYPE_QUAL
1481 ;
1482
1483scspec:
1484 STATIC
1485 | SCSPEC
1486 ;
1487\f
1488/* Initializers. `init' is the entry point. */
1489
1490init:
1491 expr_no_commas
1492 | '{'
1493 { really_start_incremental_init (NULL_TREE); }
1494 initlist_maybe_comma '}'
1495 { $$ = pop_init_level (0); }
1496 | error
1497 { $$ = error_mark_node; }
1498 ;
1499
1500/* `initlist_maybe_comma' is the guts of an initializer in braces. */
1501initlist_maybe_comma:
1502 /* empty */
1503 { if (pedantic)
1504 pedwarn ("ISO C forbids empty initializer braces"); }
1505 | initlist1 maybecomma
1506 ;
1507
1508initlist1:
1509 initelt
1510 | initlist1 ',' initelt
1511 ;
1512
1513/* `initelt' is a single element of an initializer.
1514 It may use braces. */
1515initelt:
1516 designator_list '=' initval
1517 { if (pedantic && ! flag_isoc99)
1518 pedwarn ("ISO C90 forbids specifying subobject to initialize"); }
1519 | designator initval
1520 { if (pedantic)
1521 pedwarn ("obsolete use of designated initializer without `='"); }
1522 | identifier ':'
1523 { set_init_label ($1);
1524 if (pedantic)
1525 pedwarn ("obsolete use of designated initializer with `:'"); }
1526 initval
1527 {}
1528 | initval
1529 ;
1530
1531initval:
1532 '{'
1533 { push_init_level (0); }
1534 initlist_maybe_comma '}'
1535 { process_init_element (pop_init_level (0)); }
1536 | expr_no_commas
1537 { process_init_element ($1); }
1538 | error
1539 ;
1540
1541designator_list:
1542 designator
1543 | designator_list designator
1544 ;
1545
1546designator:
1547 '.' identifier
1548 { set_init_label ($2); }
1549 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1550 { set_init_index ($2, $4);
1551 if (pedantic)
1552 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1553 | '[' expr_no_commas ']'
1554 { set_init_index ($2, NULL_TREE); }
1555 ;
1556\f
1557nested_function:
1558 declarator
1559 { if (pedantic)
1560 pedwarn ("ISO C forbids nested functions");
1561
1562 push_function_context ();
1563 if (! start_function (current_declspecs, $1,
1564 all_prefix_attributes))
1565 {
1566 pop_function_context ();
1567 YYERROR1;
1568 }
1569 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1570 }
1571 old_style_parm_decls save_location
1572 { tree decl = current_function_decl;
1573 DECL_SOURCE_LOCATION (decl) = $4;
1574 store_parm_decls (); }
1575/* This used to use compstmt_or_error.
1576 That caused a bug with input `f(g) int g {}',
1577 where the use of YYERROR1 above caused an error
1578 which then was handled by compstmt_or_error.
1579 There followed a repeated execution of that same rule,
1580 which called YYERROR1 again, and so on. */
1581 compstmt
1582 { tree decl = current_function_decl;
1583 finish_function ();
1584 pop_function_context ();
1585 add_decl_stmt (decl); }
1586 ;
1587
1588notype_nested_function:
1589 notype_declarator
1590 { if (pedantic)
1591 pedwarn ("ISO C forbids nested functions");
1592
1593 push_function_context ();
1594 if (! start_function (current_declspecs, $1,
1595 all_prefix_attributes))
1596 {
1597 pop_function_context ();
1598 YYERROR1;
1599 }
1600 parsing_iso_function_signature = false; /* Don't warn about nested functions. */
1601 }
1602 old_style_parm_decls save_location
1603 { tree decl = current_function_decl;
1604 DECL_SOURCE_LOCATION (decl) = $4;
1605 store_parm_decls (); }
1606/* This used to use compstmt_or_error.
1607 That caused a bug with input `f(g) int g {}',
1608 where the use of YYERROR1 above caused an error
1609 which then was handled by compstmt_or_error.
1610 There followed a repeated execution of that same rule,
1611 which called YYERROR1 again, and so on. */
1612 compstmt
1613 { tree decl = current_function_decl;
1614 finish_function ();
1615 pop_function_context ();
1616 add_decl_stmt (decl); }
1617 ;
1618
1619/* Any kind of declarator (thus, all declarators allowed
1620 after an explicit typespec). */
1621
1622declarator:
1623 after_type_declarator
1624 | notype_declarator
1625 ;
1626
1627/* A declarator that is allowed only after an explicit typespec. */
1628
1629after_type_declarator:
1630 '(' maybe_attribute after_type_declarator ')'
1631 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1632 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1633 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1634/* | after_type_declarator '(' error ')' %prec '.'
1635 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1636 poplevel (0, 0, 0); } */
1637 | after_type_declarator array_declarator %prec '.'
1638 { $$ = set_array_declarator_type ($2, $1, 0); }
1639 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1640 { $$ = make_pointer_declarator ($2, $3); }
1641 | TYPENAME
1642@@ifobjc
1643 | OBJECTNAME
1644@@end_ifobjc
1645 ;
1646
1647/* Kinds of declarator that can appear in a parameter list
1648 in addition to notype_declarator. This is like after_type_declarator
1649 but does not allow a typedef name in parentheses as an identifier
1650 (because it would conflict with a function with that typedef as arg). */
1651parm_declarator:
1652 parm_declarator_starttypename
1653 | parm_declarator_nostarttypename
1654 ;
1655
1656parm_declarator_starttypename:
1657 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659/* | parm_declarator_starttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_starttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1664 | TYPENAME
1665@@ifobjc
1666 | OBJECTNAME
1667@@end_ifobjc
1668 ;
1669
1670parm_declarator_nostarttypename:
1671 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1672 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1673/* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1674 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1675 poplevel (0, 0, 0); } */
1676 | parm_declarator_nostarttypename array_declarator %prec '.'
1677 { $$ = set_array_declarator_type ($2, $1, 0); }
1678 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1679 { $$ = make_pointer_declarator ($2, $3); }
1680 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1681 { $$ = make_pointer_declarator ($2, $3); }
1682 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1683 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1684 ;
1685
1686/* A declarator allowed whether or not there has been
1687 an explicit typespec. These cannot redeclare a typedef-name. */
1688
1689notype_declarator:
1690 notype_declarator '(' parmlist_or_identifiers %prec '.'
1691 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1692/* | notype_declarator '(' error ')' %prec '.'
1693 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1694 poplevel (0, 0, 0); } */
1695 | '(' maybe_attribute notype_declarator ')'
1696 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1697 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1698 { $$ = make_pointer_declarator ($2, $3); }
1699 | notype_declarator array_declarator %prec '.'
1700 { $$ = set_array_declarator_type ($2, $1, 0); }
1701 | IDENTIFIER
1702 ;
1703
1704struct_head:
1705 STRUCT
1706 { $$ = NULL_TREE; }
1707 | STRUCT attributes
1708 { $$ = $2; }
1709 ;
1710
1711union_head:
1712 UNION
1713 { $$ = NULL_TREE; }
1714 | UNION attributes
1715 { $$ = $2; }
1716 ;
1717
1718enum_head:
1719 ENUM
1720 { $$ = NULL_TREE; }
1721 | ENUM attributes
1722 { $$ = $2; }
1723 ;
1724
1725/* structsp_attr: struct/union/enum specifiers that either
1726 end with attributes, or are such that any following attributes would
1727 be parsed as part of the struct/union/enum specifier.
1728
1729 structsp_nonattr: other struct/union/enum specifiers. */
1730
1731structsp_attr:
1732 struct_head identifier '{'
1733 { $$ = start_struct (RECORD_TYPE, $2);
1734 /* Start scope of tag before parsing components. */
1735 }
1736 component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1738 chainon ($1, $7)); }
1739 | struct_head '{' component_decl_list '}' maybe_attribute
1740 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1741 nreverse ($3), chainon ($1, $5));
1742 }
1743 | union_head identifier '{'
1744 { $$ = start_struct (UNION_TYPE, $2); }
1745 component_decl_list '}' maybe_attribute
1746 { $$ = finish_struct ($<ttype>4, nreverse ($5),
1747 chainon ($1, $7)); }
1748 | union_head '{' component_decl_list '}' maybe_attribute
1749 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1750 nreverse ($3), chainon ($1, $5));
1751 }
1752 | enum_head identifier '{'
1753 { $$ = start_enum ($2); }
1754 enumlist maybecomma_warn '}' maybe_attribute
1755 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1756 chainon ($1, $8)); }
1757 | enum_head '{'
1758 { $$ = start_enum (NULL_TREE); }
1759 enumlist maybecomma_warn '}' maybe_attribute
1760 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1761 chainon ($1, $7)); }
1762 ;
1763
1764structsp_nonattr:
1765 struct_head identifier
1766 { $$ = xref_tag (RECORD_TYPE, $2); }
1767 | union_head identifier
1768 { $$ = xref_tag (UNION_TYPE, $2); }
1769 | enum_head identifier
1770 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1771 /* In ISO C, enumerated types can be referred to
1772 only if already defined. */
1773 if (pedantic && !COMPLETE_TYPE_P ($$))
1774 pedwarn ("ISO C forbids forward references to `enum' types"); }
1775 ;
1776
1777maybecomma:
1778 /* empty */
1779 | ','
1780 ;
1781
1782maybecomma_warn:
1783 /* empty */
1784 | ','
1785 { if (pedantic && ! flag_isoc99)
1786 pedwarn ("comma at end of enumerator list"); }
1787 ;
1788
1789/* We chain the components in reverse order. They are put in forward
1790 order in structsp_attr.
1791
1792 Note that component_declarator returns single decls, so components
1793 and components_notype can use TREE_CHAIN directly, wheras components
1794 and components_notype return lists (of comma separated decls), so
1795 component_decl_list and component_decl_list2 must use chainon.
1796
1797 The theory behind all this is that there will be more semicolon
1798 separated fields than comma separated fields, and so we'll be
1799 minimizing the number of node traversals required by chainon. */
1800
1801component_decl_list:
1802 component_decl_list2
1803 { $$ = $1; }
1804 | component_decl_list2 component_decl
1805 { $$ = chainon ($2, $1);
1806 pedwarn ("no semicolon at end of struct or union"); }
1807 ;
1808
1809component_decl_list2: /* empty */
1810 { $$ = NULL_TREE; }
1811 | component_decl_list2 component_decl ';'
1812 { $$ = chainon ($2, $1); }
1813 | component_decl_list2 ';'
1814 { if (pedantic)
1815 pedwarn ("extra semicolon in struct or union specified"); }
1816@@ifobjc
1817 /* foo(sizeof(struct{ @defs(ClassName)})); */
1818 | DEFS '(' CLASSNAME ')'
1819 { $$ = nreverse (get_class_ivars_from_name ($3)); }
1820@@end_ifobjc
1821 ;
1822
1823component_decl:
1824 declspecs_nosc_ts setspecs components
1825 { $$ = $3;
1826 POP_DECLSPEC_STACK; }
1827 | declspecs_nosc_ts setspecs
1828 {
1829 /* Support for unnamed structs or unions as members of
1830 structs or unions (which is [a] useful and [b] supports
1831 MS P-SDK). */
1832 if (pedantic)
1833 pedwarn ("ISO C doesn't support unnamed structs/unions");
1834
1835 $$ = grokfield(NULL, current_declspecs, NULL_TREE);
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots setspecs components_notype
1838 { $$ = $3;
1839 POP_DECLSPEC_STACK; }
1840 | declspecs_nosc_nots
1841 { if (pedantic)
1842 pedwarn ("ISO C forbids member declarations with no members");
1843 shadow_tag_warned ($1, pedantic);
1844 $$ = NULL_TREE; }
1845 | error
1846 { $$ = NULL_TREE; }
1847 | extension component_decl
1848 { $$ = $2;
1849 RESTORE_EXT_FLAGS ($1); }
1850 ;
1851
1852components:
1853 component_declarator
1854 | components ',' maybe_resetattrs component_declarator
1855 { TREE_CHAIN ($4) = $1; $$ = $4; }
1856 ;
1857
1858components_notype:
1859 component_notype_declarator
1860 | components_notype ',' maybe_resetattrs component_notype_declarator
1861 { TREE_CHAIN ($4) = $1; $$ = $4; }
1862 ;
1863
1864component_declarator:
1865 declarator maybe_attribute
1866 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1867 decl_attributes (&$$,
1868 chainon ($2, all_prefix_attributes), 0); }
1869 | declarator ':' expr_no_commas maybe_attribute
1870 { $$ = grokfield ($1, current_declspecs, $3);
1871 decl_attributes (&$$,
1872 chainon ($4, all_prefix_attributes), 0); }
1873 | ':' expr_no_commas maybe_attribute
1874 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1875 decl_attributes (&$$,
1876 chainon ($3, all_prefix_attributes), 0); }
1877 ;
1878
1879component_notype_declarator:
1880 notype_declarator maybe_attribute
1881 { $$ = grokfield ($1, current_declspecs, NULL_TREE);
1882 decl_attributes (&$$,
1883 chainon ($2, all_prefix_attributes), 0); }
1884 | notype_declarator ':' expr_no_commas maybe_attribute
1885 { $$ = grokfield ($1, current_declspecs, $3);
1886 decl_attributes (&$$,
1887 chainon ($4, all_prefix_attributes), 0); }
1888 | ':' expr_no_commas maybe_attribute
1889 { $$ = grokfield (NULL_TREE, current_declspecs, $2);
1890 decl_attributes (&$$,
1891 chainon ($3, all_prefix_attributes), 0); }
1892 ;
1893
1894/* We chain the enumerators in reverse order.
1895 They are put in forward order in structsp_attr. */
1896
1897enumlist:
1898 enumerator
1899 | enumlist ',' enumerator
1900 { if ($1 == error_mark_node)
1901 $$ = $1;
1902 else
1903 TREE_CHAIN ($3) = $1, $$ = $3; }
1904 | error
1905 { $$ = error_mark_node; }
1906 ;
1907
1908
1909enumerator:
1910 identifier
1911 { $$ = build_enumerator ($1, NULL_TREE); }
1912 | identifier '=' expr_no_commas
1913 { $$ = build_enumerator ($1, $3); }
1914 ;
1915
1916typename:
1917 declspecs_nosc
1918 { pending_xref_error ();
1919 $<ttype>$ = $1; }
1920 absdcl
1921 { $$ = build_tree_list ($<ttype>2, $3); }
1922 ;
1923
1924absdcl: /* an absolute declarator */
1925 /* empty */
1926 { $$ = NULL_TREE; }
1927 | absdcl1
1928 ;
1929
1930absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1931 /* empty */
1932 { $$ = build_tree_list (build_tree_list (current_declspecs,
1933 NULL_TREE),
1934 all_prefix_attributes); }
1935 | absdcl1
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1937 $1),
1938 all_prefix_attributes); }
1939 | absdcl1_noea attributes
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1941 $1),
1942 chainon ($2, all_prefix_attributes)); }
1943 ;
1944
1945absdcl1: /* a nonempty absolute declarator */
1946 absdcl1_ea
1947 | absdcl1_noea
1948 ;
1949
1950absdcl1_noea:
1951 direct_absdcl1
1952 | '*' maybe_type_quals_attrs absdcl1_noea
1953 { $$ = make_pointer_declarator ($2, $3); }
1954 ;
1955
1956absdcl1_ea:
1957 '*' maybe_type_quals_attrs
1958 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1959 | '*' maybe_type_quals_attrs absdcl1_ea
1960 { $$ = make_pointer_declarator ($2, $3); }
1961 ;
1962
1963direct_absdcl1:
1964 '(' maybe_attribute absdcl1 ')'
1965 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1966 | direct_absdcl1 '(' parmlist
1967 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1968 | direct_absdcl1 array_declarator
1969 { $$ = set_array_declarator_type ($2, $1, 1); }
1970 | '(' parmlist
1971 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1972 | array_declarator
1973 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1974 ;
1975
1976/* The [...] part of a declarator for an array type. */
1977
1978array_declarator:
1979 '[' maybe_type_quals_attrs expr_no_commas ']'
1980 { $$ = build_array_declarator ($3, $2, 0, 0); }
1981 | '[' maybe_type_quals_attrs ']'
1982 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1983 | '[' maybe_type_quals_attrs '*' ']'
1984 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1985 | '[' STATIC maybe_type_quals_attrs expr_no_commas ']'
1986 { $$ = build_array_declarator ($4, $3, 1, 0); }
1987 /* declspecs_nosc_nots is a synonym for type_quals_attrs. */
1988 | '[' declspecs_nosc_nots STATIC expr_no_commas ']'
1989 { $$ = build_array_declarator ($4, $2, 1, 0); }
1990 ;
1991
1992/* A nonempty series of declarations and statements (possibly followed by
1993 some labels) that can form the body of a compound statement.
1994 NOTE: we don't allow labels on declarations; this might seem like a
1995 natural extension, but there would be a conflict between attributes
1996 on the label and prefix attributes on the declaration. */
1997
1998stmts_and_decls:
1999 lineno_stmt_decl_or_labels_ending_stmt
2000 | lineno_stmt_decl_or_labels_ending_decl
2001 | lineno_stmt_decl_or_labels_ending_label
2002 {
2003 error ("label at end of compound statement");
2004 }
2005 | lineno_stmt_decl_or_labels_ending_error
2006 ;
2007
2008lineno_stmt_decl_or_labels_ending_stmt:
2009 lineno_stmt
2010 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2011 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2012 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2013 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2014 ;
2015
2016lineno_stmt_decl_or_labels_ending_decl:
2017 lineno_decl
2018 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2019 {
2020 if ((pedantic && !flag_isoc99)
2021 || warn_declaration_after_statement)
2022 pedwarn_c90 ("ISO C90 forbids mixed declarations and code");
2023 }
2024 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2025 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2026 ;
2027
2028lineno_stmt_decl_or_labels_ending_label:
2029 lineno_label
2030 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2031 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2032 | lineno_stmt_decl_or_labels_ending_label lineno_label
2033 | lineno_stmt_decl_or_labels_ending_error lineno_label
2034 ;
2035
2036lineno_stmt_decl_or_labels_ending_error:
2037 errstmt
2038 | lineno_stmt_decl_or_labels errstmt
2039 ;
2040
2041lineno_stmt_decl_or_labels:
2042 lineno_stmt_decl_or_labels_ending_stmt
2043 | lineno_stmt_decl_or_labels_ending_decl
2044 | lineno_stmt_decl_or_labels_ending_label
2045 | lineno_stmt_decl_or_labels_ending_error
2046 ;
2047
2048errstmt: error ';'
2049 ;
2050
2051pushlevel: /* empty */
2052 { pushlevel (0);
2053 clear_last_expr ();
2054 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2055 }
2056 ;
2057
2058poplevel: /* empty */
2059 {
2060@@ifobjc
2061 if (c_dialect_objc ())
2062 objc_clear_super_receiver ();
2063@@end_ifobjc
2064 $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2065 }
2066 ;
2067
2068/* Start and end blocks created for the new scopes of C99. */
2069c99_block_start: /* empty */
2070 { if (flag_isoc99)
2071 {
2072 $$ = c_begin_compound_stmt ();
2073 pushlevel (0);
2074 clear_last_expr ();
2075 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2076 }
2077 else
2078 $$ = NULL_TREE;
2079 }
2080 ;
2081
2082/* Productions using c99_block_start and c99_block_end will need to do what's
2083 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2084 $1 is the value of c99_block_start and $2 of c99_block_end. */
2085c99_block_end: /* empty */
2086 { if (flag_isoc99)
2087 {
2088 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2089 $$ = poplevel (KEEP_MAYBE, 0, 0);
2090 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2091 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2092 = $$;
2093 }
2094 else
2095 $$ = NULL_TREE; }
2096 ;
2097
2098/* Read zero or more forward-declarations for labels
2099 that nested functions can jump to. */
2100maybe_label_decls:
2101 /* empty */
2102 | label_decls
2103 { if (pedantic)
2104 pedwarn ("ISO C forbids label declarations"); }
2105 ;
2106
2107label_decls:
2108 label_decl
2109 | label_decls label_decl
2110 ;
2111
2112label_decl:
2113 LABEL identifiers_or_typenames ';'
2114 { tree link;
2115 for (link = $2; link; link = TREE_CHAIN (link))
2116 {
2117 tree label = declare_label (TREE_VALUE (link));
2118 C_DECLARED_LABEL_FLAG (label) = 1;
2119 add_decl_stmt (label);
2120 }
2121 }
2122 ;
2123
2124/* This is the body of a function definition.
2125 It causes syntax errors to ignore to the next openbrace. */
2126compstmt_or_error:
2127 compstmt
2128 {}
2129 | error compstmt
2130 ;
2131
2132compstmt_start: '{' { compstmt_count++;
2133 $$ = c_begin_compound_stmt (); }
2134 ;
2135
2136compstmt_nostart: '}'
2137 { $$ = convert (void_type_node, integer_zero_node); }
2138 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2139 { $$ = poplevel (KEEP_MAYBE, 0, 0);
2140 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2141 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2142 = $$; }
2143 ;
2144
2145compstmt_contents_nonempty:
2146 stmts_and_decls
2147 | error
2148 ;
2149
2150compstmt_primary_start:
2151 '(' '{'
3a327f56 2152 { if (last_tree == NULL)
003757ed
MD
2153 {
2154 error ("braced-group within expression allowed only inside a function");
2155 YYERROR;
2156 }
2157 /* We must force a BLOCK for this level
2158 so that, if it is not expanded later,
2159 there is a way to turn off the entire subtree of blocks
2160 that are contained in it. */
2161 keep_next_level ();
2162 compstmt_count++;
2163 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2164 last_expr_type = NULL_TREE;
2165 }
2166 ;
2167
2168compstmt: compstmt_start compstmt_nostart
2169 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2170 last_expr_type = NULL_TREE;
2171 $$ = $1; }
2172 ;
2173
2174/* Value is number of statements counted as of the closeparen. */
2175simple_if:
2176 if_prefix c99_block_lineno_labeled_stmt
2177 { c_finish_then (); }
2178/* Make sure c_expand_end_cond is run once
2179 for each call to c_expand_start_cond.
2180 Otherwise a crash is likely. */
2181 | if_prefix error
2182 ;
2183
2184if_prefix:
2185 /* We must build the IF_STMT node before parsing its
2186 condition so that STMT_LINENO refers to the line
2187 containing the "if", and not the line containing
2188 the close-parenthesis.
2189
2190 c_begin_if_stmt returns the IF_STMT node, which
2191 we later pass to c_expand_start_cond to fill
2192 in the condition and other tidbits. */
2193 IF
2194 { $<ttype>$ = c_begin_if_stmt (); }
2195 '(' expr ')'
2196 { c_expand_start_cond (c_common_truthvalue_conversion ($4),
2197 compstmt_count,$<ttype>2);
2198 $<itype>$ = stmt_count;
2199 if_stmt_locus = $<location>-1; }
2200 ;
2201
2202/* This is a subroutine of stmt.
2203 It is used twice, once for valid DO statements
2204 and once for catching errors in parsing the end test. */
2205do_stmt_start:
2206 DO
2207 { stmt_count++;
2208 compstmt_count++;
2209 c_in_iteration_stmt++;
2210 $<ttype>$
2211 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2212 NULL_TREE));
2213 /* In the event that a parse error prevents
2214 parsing the complete do-statement, set the
2215 condition now. Otherwise, we can get crashes at
2216 RTL-generation time. */
2217 DO_COND ($<ttype>$) = error_mark_node; }
2218 c99_block_lineno_labeled_stmt WHILE
2219 { $$ = $<ttype>2;
2220 RECHAIN_STMTS ($$, DO_BODY ($$));
2221 c_in_iteration_stmt--; }
2222 ;
2223
2224/* The forced readahead in here is because we might be at the end of a
2225 line, and the line and file won't be bumped until yylex absorbs the
2226 first token on the next line. */
2227
2228save_location:
2229 { if (yychar == YYEMPTY)
2230 yychar = YYLEX;
2231 $$ = input_location; }
2232 ;
2233
2234lineno_labeled_stmt:
2235 lineno_stmt
2236 | lineno_label lineno_labeled_stmt
2237 ;
2238
2239/* Like lineno_labeled_stmt, but a block in C99. */
2240c99_block_lineno_labeled_stmt:
2241 c99_block_start lineno_labeled_stmt c99_block_end
2242 { if (flag_isoc99)
2243 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2244 ;
2245
2246lineno_stmt:
2247 save_location stmt
2248 { if ($2)
2249 {
2250 STMT_LINENO ($2) = $1.line;
2251 /* ??? We currently have no way of recording
2252 the filename for a statement. This probably
2253 matters little in practice at the moment,
2254 but I suspect that problems will occur when
2255 doing inlining at the tree level. */
2256 }
2257 }
2258 ;
2259
2260lineno_label:
2261 save_location label
2262 { if ($2)
2263 {
2264 STMT_LINENO ($2) = $1.line;
2265 }
2266 }
2267 ;
2268
2269select_or_iter_stmt:
2270 simple_if ELSE
2271 { c_expand_start_else ();
2272 $<itype>1 = stmt_count; }
2273 c99_block_lineno_labeled_stmt
2274 { c_finish_else ();
2275 c_expand_end_cond ();
2276 if (extra_warnings && stmt_count == $<itype>1)
2277 warning ("empty body in an else-statement"); }
2278 | simple_if %prec IF
2279 { c_expand_end_cond ();
2280 /* This warning is here instead of in simple_if, because we
2281 do not want a warning if an empty if is followed by an
2282 else statement. Increment stmt_count so we don't
2283 give a second error if this is a nested `if'. */
2284 if (extra_warnings && stmt_count++ == $<itype>1)
2285 warning ("%Hempty body in an if-statement",
2286 &if_stmt_locus); }
2287/* Make sure c_expand_end_cond is run once
2288 for each call to c_expand_start_cond.
2289 Otherwise a crash is likely. */
2290 | simple_if ELSE error
2291 { c_expand_end_cond (); }
2292 /* We must build the WHILE_STMT node before parsing its
2293 condition so that STMT_LINENO refers to the line
2294 containing the "while", and not the line containing
2295 the close-parenthesis.
2296
2297 c_begin_while_stmt returns the WHILE_STMT node, which
2298 we later pass to c_finish_while_stmt_cond to fill
2299 in the condition and other tidbits. */
2300 | WHILE
2301 { stmt_count++;
2302 $<ttype>$ = c_begin_while_stmt (); }
2303 '(' expr ')'
2304 { c_in_iteration_stmt++;
2305 $4 = c_common_truthvalue_conversion ($4);
2306 c_finish_while_stmt_cond
2307 (c_common_truthvalue_conversion ($4), $<ttype>2);
2308 $<ttype>$ = add_stmt ($<ttype>2); }
2309 c99_block_lineno_labeled_stmt
2310 { c_in_iteration_stmt--;
2311 RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2312 | do_stmt_start
2313 '(' expr ')' ';'
2314 { DO_COND ($1) = c_common_truthvalue_conversion ($3); }
2315 | do_stmt_start error
2316 { }
2317 | FOR
2318 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2319 NULL_TREE, NULL_TREE);
2320 add_stmt ($<ttype>$); }
2321 '(' for_init_stmt
2322 { stmt_count++;
2323 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2324 xexpr ';'
2325 { if ($6)
2326 FOR_COND ($<ttype>2)
2327 = c_common_truthvalue_conversion ($6); }
2328 xexpr ')'
2329 { c_in_iteration_stmt++;
2330 FOR_EXPR ($<ttype>2) = $9; }
2331 c99_block_lineno_labeled_stmt
2332 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2));
2333 c_in_iteration_stmt--;}
2334 | SWITCH '(' expr ')'
2335 { stmt_count++;
2336 $<ttype>$ = c_start_case ($3);
2337 c_in_case_stmt++; }
2338 c99_block_lineno_labeled_stmt
2339 { c_finish_case ();
2340 c_in_case_stmt--; }
2341 ;
2342
2343for_init_stmt:
2344 xexpr ';'
2345 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2346 | decl
2347 { check_for_loop_decls (); }
2348 ;
2349
2350/* Parse a single real statement, not including any labels. */
2351stmt:
2352 compstmt
2353 { stmt_count++; $$ = $1; }
2354 | expr ';'
2355 { stmt_count++;
2356 $$ = c_expand_expr_stmt ($1); }
2357 | c99_block_start select_or_iter_stmt c99_block_end
2358 { if (flag_isoc99)
2359 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2360 $$ = NULL_TREE; }
2361 | BREAK ';'
2362 { stmt_count++;
2363 if (!(c_in_iteration_stmt || c_in_case_stmt))
2364 {
2365 error ("break statement not within loop or switch");
2366 $$ = NULL_TREE;
2367 }
2368 else
2369 $$ = add_stmt (build_break_stmt ()); }
2370 | CONTINUE ';'
2371 { stmt_count++;
2372 if (!c_in_iteration_stmt)
2373 {
2374 error ("continue statement not within a loop");
2375 $$ = NULL_TREE;
2376 }
2377 else
2378 $$ = add_stmt (build_continue_stmt ()); }
2379 | RETURN ';'
2380 { stmt_count++;
2381 $$ = c_expand_return (NULL_TREE); }
2382 | RETURN expr ';'
2383 { stmt_count++;
2384 $$ = c_expand_return ($2); }
2385 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2386 { stmt_count++;
2387 $$ = simple_asm_stmt ($4); }
2388 /* This is the case with just output operands. */
2389 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2390 { stmt_count++;
2391 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2392 /* This is the case with input operands as well. */
2393 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2394 asm_operands ')' ';'
2395 { stmt_count++;
2396 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2397 /* This is the case with clobbered registers as well. */
2398 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2399 asm_operands ':' asm_clobbers ')' ';'
2400 { stmt_count++;
2401 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2402 | GOTO identifier ';'
2403 { tree decl;
2404 stmt_count++;
2405 decl = lookup_label ($2);
2406 if (decl != 0)
2407 {
2408 TREE_USED (decl) = 1;
2409 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2410 }
2411 else
2412 $$ = NULL_TREE;
2413 }
2414 | GOTO '*' expr ';'
2415 { if (pedantic)
2416 pedwarn ("ISO C forbids `goto *expr;'");
2417 stmt_count++;
2418 $3 = convert (ptr_type_node, $3);
2419 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2420 | ';'
2421 { $$ = NULL_TREE; }
2422@@ifobjc
2423 | AT_THROW expr ';'
2424 { stmt_count++;
2425 $$ = objc_build_throw_stmt ($2);
2426 }
2427 | AT_THROW ';'
2428 { stmt_count++;
2429 $$ = objc_build_throw_stmt (NULL_TREE);
2430 }
2431 | objc_try_catch_stmt
2432 { objc_build_finally_prologue (); }
2433 objc_finally_block
2434 { $$ = objc_build_try_catch_finally_stmt ($1, $3); }
2435 | AT_SYNCHRONIZED '(' expr ')'
2436 { objc_build_synchronized_prologue ($3); }
2437 compstmt
2438 { $$ = objc_build_synchronized_epilogue (); }
2439 ;
2440
2441objc_try_catch_stmt:
2442 objc_try_stmt
2443 { objc_build_try_epilogue (1); }
2444 objc_catch_list
2445 { objc_build_catch_epilogue (); $$ = 1; }
2446 | objc_try_stmt
2447 { objc_build_try_epilogue (0); $$ = 0; }
2448 ;
2449
2450
2451objc_try_stmt:
2452 AT_TRY
2453 { objc_build_try_prologue (); }
2454 compstmt
2455 ;
2456
2457objc_catch_list:
2458 objc_catch_list objc_catch_block
2459 | objc_catch_block
2460 ;
2461
2462objc_catch_block:
2463 AT_CATCH '(' parm ')'
2464 { objc_build_catch_stmt ($3); }
2465 compstmt
2466 { stmt_count++; }
2467 ;
2468
2469objc_finally_block:
2470 AT_FINALLY compstmt
2471 { $$ = 1; }
2472 | /* NULL */
2473 { $$ = 0; }
2474@@end_ifobjc
2475 ;
2476
2477/* Any kind of label, including jump labels and case labels.
2478 ANSI C accepts labels only before statements, but we allow them
2479 also at the end of a compound statement. */
2480
2481label: CASE expr_no_commas ':'
2482 { stmt_count++;
2483 $$ = do_case ($2, NULL_TREE); }
2484 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2485 { stmt_count++;
2486 $$ = do_case ($2, $4); }
2487 | DEFAULT ':'
2488 { stmt_count++;
2489 $$ = do_case (NULL_TREE, NULL_TREE); }
2490 | identifier save_location ':' maybe_attribute
2491 { tree label = define_label ($2, $1);
2492 stmt_count++;
2493 if (label)
2494 {
2495 decl_attributes (&label, $4, 0);
2496 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2497 }
2498 else
2499 $$ = NULL_TREE;
2500 }
2501 ;
2502
2503/* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2504
2505maybe_type_qual:
2506 /* empty */
2507 { $$ = NULL_TREE; }
2508 | TYPE_QUAL
2509 { }
2510 ;
2511
2512xexpr:
2513 /* empty */
2514 { $$ = NULL_TREE; }
2515 | expr
2516 ;
2517
2518/* These are the operands other than the first string and colon
2519 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2520asm_operands: /* empty */
2521 { $$ = NULL_TREE; }
2522 | nonnull_asm_operands
2523 ;
2524
2525nonnull_asm_operands:
2526 asm_operand
2527 | nonnull_asm_operands ',' asm_operand
2528 { $$ = chainon ($1, $3); }
2529 ;
2530
2531asm_operand:
2532 STRING '(' expr ')'
2533 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2534 | '[' identifier ']' STRING '(' expr ')'
2535 { $2 = build_string (IDENTIFIER_LENGTH ($2),
2536 IDENTIFIER_POINTER ($2));
2537 $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2538 ;
2539
2540asm_clobbers:
2541 STRING
2542 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
2543 | asm_clobbers ',' STRING
2544 { $$ = tree_cons (NULL_TREE, $3, $1); }
2545 ;
2546\f
2547/* This is what appears inside the parens in a function declarator.
2548 Its value is a list of ..._TYPE nodes. Attributes must appear here
2549 to avoid a conflict with their appearance after an open parenthesis
2550 in an abstract declarator, as in
2551 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2552parmlist:
2553 maybe_attribute
2554 { pushlevel (0);
2555 declare_parm_level (); }
2556 parmlist_1
2557 { $$ = $3;
2558 poplevel (0, 0, 0); }
2559 ;
2560
2561parmlist_1:
2562 parmlist_2 ')'
2563 | parms ';'
2564 { mark_forward_parm_decls (); }
2565 maybe_attribute
2566 { /* Dummy action so attributes are in known place
2567 on parser stack. */ }
2568 parmlist_1
2569 { $$ = $6; }
2570 | error ')'
2571 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2572 ;
2573
2574/* This is what appears inside the parens in a function declarator.
2575 Is value is represented in the format that grokdeclarator expects. */
2576parmlist_2: /* empty */
2577 { $$ = get_parm_info (0); }
2578 | ELLIPSIS
2579 { $$ = get_parm_info (0);
2580 /* Gcc used to allow this as an extension. However, it does
2581 not work for all targets, and thus has been disabled.
2582 Also, since func (...) and func () are indistinguishable,
2583 it caused problems with the code in expand_builtin which
2584 tries to verify that BUILT_IN_NEXT_ARG is being used
2585 correctly. */
2586 error ("ISO C requires a named argument before `...'");
2587 parsing_iso_function_signature = true;
2588 }
2589 | parms
2590 { $$ = get_parm_info (1);
2591 parsing_iso_function_signature = true;
2592 }
2593 | parms ',' ELLIPSIS
2594 { $$ = get_parm_info (0);
2595 parsing_iso_function_signature = true;
2596 }
2597 ;
2598
2599parms:
2600 firstparm
2601 { push_parm_decl ($1); }
2602 | parms ',' parm
2603 { push_parm_decl ($3); }
2604 ;
2605
2606/* A single parameter declaration or parameter type name,
2607 as found in a parmlist. */
2608parm:
2609 declspecs_ts setspecs parm_declarator maybe_attribute
2610 { $$ = build_tree_list (build_tree_list (current_declspecs,
2611 $3),
2612 chainon ($4, all_prefix_attributes));
2613 POP_DECLSPEC_STACK; }
2614 | declspecs_ts setspecs notype_declarator maybe_attribute
2615 { $$ = build_tree_list (build_tree_list (current_declspecs,
2616 $3),
2617 chainon ($4, all_prefix_attributes));
2618 POP_DECLSPEC_STACK; }
2619 | declspecs_ts setspecs absdcl_maybe_attribute
2620 { $$ = $3;
2621 POP_DECLSPEC_STACK; }
2622 | declspecs_nots setspecs notype_declarator maybe_attribute
2623 { $$ = build_tree_list (build_tree_list (current_declspecs,
2624 $3),
2625 chainon ($4, all_prefix_attributes));
2626 POP_DECLSPEC_STACK; }
2627
2628 | declspecs_nots setspecs absdcl_maybe_attribute
2629 { $$ = $3;
2630 POP_DECLSPEC_STACK; }
2631 ;
2632
2633/* The first parm, which must suck attributes from off the top of the parser
2634 stack. */
2635firstparm:
2636 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2637 { $$ = build_tree_list (build_tree_list (current_declspecs,
2638 $3),
2639 chainon ($4, all_prefix_attributes));
2640 POP_DECLSPEC_STACK; }
2641 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2642 { $$ = build_tree_list (build_tree_list (current_declspecs,
2643 $3),
2644 chainon ($4, all_prefix_attributes));
2645 POP_DECLSPEC_STACK; }
2646 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2647 { $$ = $3;
2648 POP_DECLSPEC_STACK; }
2649 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2650 { $$ = build_tree_list (build_tree_list (current_declspecs,
2651 $3),
2652 chainon ($4, all_prefix_attributes));
2653 POP_DECLSPEC_STACK; }
2654
2655 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2656 { $$ = $3;
2657 POP_DECLSPEC_STACK; }
2658 ;
2659
2660setspecs_fp:
2661 setspecs
2662 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2663 all_prefix_attributes = prefix_attributes; }
2664 ;
2665
2666/* This is used in a function definition
2667 where either a parmlist or an identifier list is ok.
2668 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2669parmlist_or_identifiers:
2670 maybe_attribute
2671 { pushlevel (0);
2672 declare_parm_level (); }
2673 parmlist_or_identifiers_1
2674 { $$ = $3;
2675 poplevel (0, 0, 0); }
2676 ;
2677
2678parmlist_or_identifiers_1:
2679 parmlist_1
2680 | identifiers ')'
2681 { tree t;
2682 for (t = $1; t; t = TREE_CHAIN (t))
2683 if (TREE_VALUE (t) == NULL_TREE)
2684 error ("`...' in old-style identifier list");
2685 $$ = tree_cons (NULL_TREE, NULL_TREE, $1);
2686
2687 /* Make sure we have a parmlist after attributes. */
2688 if ($<ttype>-1 != 0
2689 && (TREE_CODE ($$) != TREE_LIST
2690 || TREE_PURPOSE ($$) == 0
2691 || TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
2692 YYERROR1;
2693 }
2694 ;
2695
2696/* A nonempty list of identifiers. */
2697identifiers:
2698 IDENTIFIER
2699 { $$ = build_tree_list (NULL_TREE, $1); }
2700 | identifiers ',' IDENTIFIER
2701 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2702 ;
2703
2704/* A nonempty list of identifiers, including typenames. */
2705identifiers_or_typenames:
2706 identifier
2707 { $$ = build_tree_list (NULL_TREE, $1); }
2708 | identifiers_or_typenames ',' identifier
2709 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2710 ;
2711
2712extension:
2713 EXTENSION
2714 { $$ = SAVE_EXT_FLAGS();
2715 pedantic = 0;
2716 warn_pointer_arith = 0;
2717 warn_traditional = 0;
2718 flag_iso = 0; }
2719 ;
2720\f
2721@@ifobjc
2722/* Objective-C productions. */
2723
2724objcdef:
2725 classdef
2726 | classdecl
2727 | aliasdecl
2728 | protocoldef
2729 | methoddef
2730 | END
2731 {
2732 if (objc_implementation_context)
2733 {
2734 finish_class (objc_implementation_context);
2735 objc_ivar_chain = NULL_TREE;
2736 objc_implementation_context = NULL_TREE;
2737 }
2738 else
2739 warning ("`@end' must appear in an implementation context");
2740 }
2741 ;
2742
2743/* A nonempty list of identifiers. */
2744identifier_list:
2745 identifier
2746 { $$ = build_tree_list (NULL_TREE, $1); }
2747 | identifier_list ',' identifier
2748 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2749 ;
2750
2751classdecl:
2752 CLASS identifier_list ';'
2753 {
2754 objc_declare_class ($2);
2755 }
2756 ;
2757
2758aliasdecl:
2759 ALIAS identifier identifier ';'
2760 {
2761 objc_declare_alias ($2, $3);
2762 }
2763 ;
2764
2765superclass:
2766 ':' identifier { $$ = $2; }
2767 | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; }
2768 ;
2769
2770class_ivars:
2771 '{' ivar_decl_list '}'
2772 | /* NULL */
2773 ;
2774
2775classdef:
2776 INTERFACE identifier superclass protocolrefs
2777 {
2778 objc_interface_context = objc_ivar_context
2779 = start_class (CLASS_INTERFACE_TYPE, $2, $3, $4);
2780 objc_public_flag = 0;
2781 }
2782 class_ivars
2783 {
2784 continue_class (objc_interface_context);
2785 }
2786 methodprotolist END
2787 {
2788 finish_class (objc_interface_context);
2789 objc_interface_context = NULL_TREE;
2790 }
2791
2792 | IMPLEMENTATION identifier superclass
2793 {
2794 objc_implementation_context = objc_ivar_context
2795 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $3, NULL_TREE);
2796 objc_public_flag = 0;
2797 }
2798 class_ivars
2799 {
2800 objc_ivar_chain
2801 = continue_class (objc_implementation_context);
2802 }
2803
2804 | INTERFACE identifier '(' identifier ')' protocolrefs
2805 {
2806 objc_interface_context
2807 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2808 continue_class (objc_interface_context);
2809 }
2810 methodprotolist END
2811 {
2812 finish_class (objc_interface_context);
2813 objc_interface_context = NULL_TREE;
2814 }
2815
2816 | IMPLEMENTATION identifier '(' identifier ')'
2817 {
2818 objc_implementation_context
2819 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2820 objc_ivar_chain
2821 = continue_class (objc_implementation_context);
2822 }
2823 ;
2824
2825protocoldef:
2826 PROTOCOL identifier protocolrefs
2827 {
2828 objc_pq_context = 1;
2829 objc_interface_context
2830 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2831 }
2832 methodprotolist END
2833 {
2834 objc_pq_context = 0;
2835 finish_protocol(objc_interface_context);
2836 objc_interface_context = NULL_TREE;
2837 }
2838 /* The @protocol forward-declaration production introduces a
2839 reduce/reduce conflict on ';', which should be resolved in
2840 favor of the production 'identifier_list -> identifier'. */
2841 | PROTOCOL identifier_list ';'
2842 {
2843 objc_declare_protocols ($2);
2844 }
2845 ;
2846
2847protocolrefs:
2848 /* empty */
2849 {
2850 $$ = NULL_TREE;
2851 }
2852 | non_empty_protocolrefs
2853 ;
2854
2855non_empty_protocolrefs:
2856 ARITHCOMPARE identifier_list ARITHCOMPARE
2857 {
2858 if ($1 == LT_EXPR && $3 == GT_EXPR)
2859 $$ = $2;
2860 else
2861 YYERROR1;
2862 }
2863 ;
2864
2865ivar_decl_list:
2866 ivar_decl_list visibility_spec ivar_decls
2867 | ivar_decls
2868 ;
2869
2870visibility_spec:
2871 PRIVATE { objc_public_flag = 2; }
2872 | PROTECTED { objc_public_flag = 0; }
2873 | PUBLIC { objc_public_flag = 1; }
2874 ;
2875
2876ivar_decls:
2877 /* empty */
2878 {
2879 $$ = NULL_TREE;
2880 }
2881 | ivar_decls ivar_decl ';'
2882 | ivar_decls ';'
2883 {
2884 if (pedantic)
2885 pedwarn ("extra semicolon in struct or union specified");
2886 }
2887 ;
2888
2889
2890/* There is a shift-reduce conflict here, because `components' may
2891 start with a `typename'. It happens that shifting (the default resolution)
2892 does the right thing, because it treats the `typename' as part of
2893 a `typed_typespecs'.
2894
2895 It is possible that this same technique would allow the distinction
2896 between `notype_initdecls' and `initdecls' to be eliminated.
2897 But I am being cautious and not trying it. */
2898
2899ivar_decl:
2900 declspecs_nosc_ts setspecs ivars
2901 { $$ = $3;
2902 POP_DECLSPEC_STACK; }
2903 | declspecs_nosc_nots setspecs ivars
2904 { $$ = $3;
2905 POP_DECLSPEC_STACK; }
2906 | error
2907 { $$ = NULL_TREE; }
2908 ;
2909
2910ivars:
2911 /* empty */
2912 { $$ = NULL_TREE; }
2913 | ivar_declarator
2914 | ivars ',' maybe_resetattrs ivar_declarator
2915 ;
2916
2917ivar_declarator:
2918 declarator
2919 {
2920 $$ = add_instance_variable (objc_ivar_context,
2921 objc_public_flag,
2922 $1, current_declspecs,
2923 NULL_TREE);
2924 }
2925 | declarator ':' expr_no_commas
2926 {
2927 $$ = add_instance_variable (objc_ivar_context,
2928 objc_public_flag,
2929 $1, current_declspecs, $3);
2930 }
2931 | ':' expr_no_commas
2932 {
2933 $$ = add_instance_variable (objc_ivar_context,
2934 objc_public_flag,
2935 NULL_TREE,
2936 current_declspecs, $2);
2937 }
2938 ;
2939
2940methodtype:
2941 '+'
2942 { objc_inherit_code = CLASS_METHOD_DECL; }
2943 | '-'
2944 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2945 ;
2946
2947methoddef:
2948 methodtype
2949 {
2950 objc_pq_context = 1;
2951 if (!objc_implementation_context)
2952 fatal_error ("method definition not in class context");
2953 }
2954 methoddecl
2955 {
2956 objc_pq_context = 0;
2957 objc_add_method (objc_implementation_context,
2958 $3,
2959 objc_inherit_code == CLASS_METHOD_DECL);
2960 start_method_def ($3);
2961 }
2962 optarglist
2963 {
2964 continue_method_def ();
2965 }
2966 compstmt_or_error
2967 {
2968 finish_method_def ();
2969 }
2970 ;
2971
2972/* the reason for the strange actions in this rule
2973 is so that notype_initdecls when reached via datadef
2974 can find a valid list of type and sc specs in $0. */
2975
2976methodprotolist:
2977 /* empty */
2978 | methodprotolist methodproto
2979 | methodprotolist { $<ttype>$ = NULL_TREE; } datadef
2980 ;
2981
2982semi_or_error:
2983 ';'
2984 | error
2985 ;
2986
2987methodproto:
2988 methodtype
2989 {
2990 /* Remember protocol qualifiers in prototypes. */
2991 objc_pq_context = 1;
2992 }
2993 methoddecl
2994 {
2995 /* Forget protocol qualifiers here. */
2996 objc_pq_context = 0;
2997 objc_add_method (objc_interface_context,
2998 $3,
2999 objc_inherit_code == CLASS_METHOD_DECL);
3000 }
3001 semi_or_error
3002 ;
3003
3004methoddecl:
3005 '(' typename ')' unaryselector
3006 {
3007 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
3008 }
3009
3010 | unaryselector
3011 {
3012 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
3013 }
3014
3015 | '(' typename ')' keywordselector optparmlist
3016 {
3017 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3018 }
3019
3020 | keywordselector optparmlist
3021 {
3022 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3023 }
3024 ;
3025
3026/* "optarglist" assumes that start_method_def has already been called...
3027 if it is not, the "xdecls" will not be placed in the proper scope */
3028
3029optarglist:
3030 /* empty */
3031 | ';' myxdecls
3032 ;
3033
3034/* to get around the following situation: "int foo (int a) int b; {}" that
3035 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3036
3037myxdecls:
3038 /* empty */
3039 | mydecls
3040 ;
3041
3042mydecls:
3043 mydecl
3044 | errstmt
3045 | mydecls mydecl
3046 | mydecl errstmt
3047 ;
3048
3049mydecl:
3050 declspecs_ts setspecs myparms ';'
3051 { POP_DECLSPEC_STACK; }
3052 | declspecs_ts ';'
3053 { shadow_tag ($1); }
3054 | declspecs_nots ';'
3055 { pedwarn ("empty declaration"); }
3056 ;
3057
3058myparms:
3059 myparm
3060 { push_parm_decl ($1); }
3061 | myparms ',' myparm
3062 { push_parm_decl ($3); }
3063 ;
3064
3065/* A single parameter declaration or parameter type name,
3066 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3067
3068myparm:
3069 parm_declarator maybe_attribute
3070 { $$ = build_tree_list (build_tree_list (current_declspecs,
3071 $1),
3072 chainon ($2, all_prefix_attributes)); }
3073 | notype_declarator maybe_attribute
3074 { $$ = build_tree_list (build_tree_list (current_declspecs,
3075 $1),
3076 chainon ($2, all_prefix_attributes)); }
3077 | absdcl_maybe_attribute
3078 { $$ = $1; }
3079 ;
3080
3081optparmlist:
3082 /* empty */
3083 {
3084 $$ = NULL_TREE;
3085 }
3086 | ',' ELLIPSIS
3087 {
3088 /* oh what a kludge! */
3089 $$ = objc_ellipsis_node;
3090 }
3091 | ','
3092 {
3093 pushlevel (0);
3094 }
3095 parmlist_2
3096 {
3097 /* returns a tree list node generated by get_parm_info */
3098 $$ = $3;
3099 poplevel (0, 0, 0);
3100 }
3101 ;
3102
3103unaryselector:
3104 selector
3105 ;
3106
3107keywordselector:
3108 keyworddecl
3109
3110 | keywordselector keyworddecl
3111 {
3112 $$ = chainon ($1, $2);
3113 }
3114 ;
3115
3116selector:
3117 IDENTIFIER
3118 | TYPENAME
3119 | CLASSNAME
3120 | OBJECTNAME
3121 | reservedwords
3122 ;
3123
3124reservedwords:
3125 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3126 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3127 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3128 | TYPESPEC | TYPE_QUAL
3129 ;
3130
3131keyworddecl:
3132 selector ':' '(' typename ')' identifier
3133 {
3134 $$ = build_keyword_decl ($1, $4, $6);
3135 }
3136
3137 | selector ':' identifier
3138 {
3139 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3140 }
3141
3142 | ':' '(' typename ')' identifier
3143 {
3144 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3145 }
3146
3147 | ':' identifier
3148 {
3149 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3150 }
3151 ;
3152
3153messageargs:
3154 selector
3155 | keywordarglist
3156 ;
3157
3158keywordarglist:
3159 keywordarg
3160 | keywordarglist keywordarg
3161 {
3162 $$ = chainon ($1, $2);
3163 }
3164 ;
3165
3166
3167keywordexpr:
3168 nonnull_exprlist
3169 {
3170 if (TREE_CHAIN ($1) == NULL_TREE)
3171 /* just return the expr., remove a level of indirection */
3172 $$ = TREE_VALUE ($1);
3173 else
3174 /* we have a comma expr., we will collapse later */
3175 $$ = $1;
3176 }
3177 ;
3178
3179keywordarg:
3180 selector ':' keywordexpr
3181 {
3182 $$ = build_tree_list ($1, $3);
3183 }
3184 | ':' keywordexpr
3185 {
3186 $$ = build_tree_list (NULL_TREE, $2);
3187 }
3188 ;
3189
3190receiver:
3191 expr
3192 | CLASSNAME
3193 {
3194 $$ = get_class_reference ($1);
3195 }
3196 | TYPENAME
3197 {
3198 $$ = get_class_reference ($1);
3199 }
3200 ;
3201
3202objcmessageexpr:
3203 '[' receiver messageargs ']'
3204 { $$ = build_tree_list ($2, $3); }
3205 ;
3206
3207selectorarg:
3208 selector
3209 | keywordnamelist
3210 ;
3211
3212keywordnamelist:
3213 keywordname
3214 | keywordnamelist keywordname
3215 {
3216 $$ = chainon ($1, $2);
3217 }
3218 ;
3219
3220keywordname:
3221 selector ':'
3222 {
3223 $$ = build_tree_list ($1, NULL_TREE);
3224 }
3225 | ':'
3226 {
3227 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3228 }
3229 ;
3230
3231objcselectorexpr:
3232 SELECTOR '(' selectorarg ')'
3233 {
3234 $$ = $3;
3235 }
3236 ;
3237
3238objcprotocolexpr:
3239 PROTOCOL '(' identifier ')'
3240 {
3241 $$ = $3;
3242 }
3243 ;
3244
3245/* extension to support C-structures in the archiver */
3246
3247objcencodeexpr:
3248 ENCODE '(' typename ')'
3249 {
3250 $$ = groktypename ($3);
3251 }
3252 ;
3253
3254@@end_ifobjc
3255%%
3256
3257/* yylex() is a thin wrapper around c_lex(), all it does is translate
3258 cpplib.h's token codes into yacc's token codes. */
3259
3260static enum cpp_ttype last_token;
3261
3262/* The reserved keyword table. */
3263struct resword
3264{
3265 const char *word;
3266 ENUM_BITFIELD(rid) rid : 16;
3267 unsigned int disable : 16;
3268};
3269
3270/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3271 _true_. */
3272#define D_C89 0x01 /* not in C89 */
3273#define D_EXT 0x02 /* GCC extension */
3274#define D_EXT89 0x04 /* GCC extension incorporated in C99 */
3275#define D_OBJC 0x08 /* Objective C only */
3276
3277static const struct resword reswords[] =
3278{
3279 { "_Bool", RID_BOOL, 0 },
3280 { "_Complex", RID_COMPLEX, 0 },
3281 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3282 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3283 { "__alignof", RID_ALIGNOF, 0 },
3284 { "__alignof__", RID_ALIGNOF, 0 },
3285 { "__asm", RID_ASM, 0 },
3286 { "__asm__", RID_ASM, 0 },
3287 { "__attribute", RID_ATTRIBUTE, 0 },
3288 { "__attribute__", RID_ATTRIBUTE, 0 },
3289 { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
3290 { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
3291 { "__builtin_va_arg", RID_VA_ARG, 0 },
3292 { "__complex", RID_COMPLEX, 0 },
3293 { "__complex__", RID_COMPLEX, 0 },
3294 { "__const", RID_CONST, 0 },
3295 { "__const__", RID_CONST, 0 },
3296 { "__extension__", RID_EXTENSION, 0 },
3297 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3298 { "__imag", RID_IMAGPART, 0 },
3299 { "__imag__", RID_IMAGPART, 0 },
3300 { "__inline", RID_INLINE, 0 },
3301 { "__inline__", RID_INLINE, 0 },
3302 { "__label__", RID_LABEL, 0 },
3303 { "__ptrbase", RID_PTRBASE, 0 },
3304 { "__ptrbase__", RID_PTRBASE, 0 },
3305 { "__ptrextent", RID_PTREXTENT, 0 },
3306 { "__ptrextent__", RID_PTREXTENT, 0 },
3307 { "__ptrvalue", RID_PTRVALUE, 0 },
3308 { "__ptrvalue__", RID_PTRVALUE, 0 },
3309 { "__real", RID_REALPART, 0 },
3310 { "__real__", RID_REALPART, 0 },
3311 { "__restrict", RID_RESTRICT, 0 },
3312 { "__restrict__", RID_RESTRICT, 0 },
3313 { "__signed", RID_SIGNED, 0 },
3314 { "__signed__", RID_SIGNED, 0 },
3315 { "__thread", RID_THREAD, 0 },
3316 { "__typeof", RID_TYPEOF, 0 },
3317 { "__typeof__", RID_TYPEOF, 0 },
3318 { "__volatile", RID_VOLATILE, 0 },
3319 { "__volatile__", RID_VOLATILE, 0 },
3320 { "asm", RID_ASM, D_EXT },
3321 { "auto", RID_AUTO, 0 },
3322 { "break", RID_BREAK, 0 },
3323 { "case", RID_CASE, 0 },
3324 { "char", RID_CHAR, 0 },
3325 { "const", RID_CONST, 0 },
3326 { "continue", RID_CONTINUE, 0 },
3327 { "default", RID_DEFAULT, 0 },
3328 { "do", RID_DO, 0 },
3329 { "double", RID_DOUBLE, 0 },
3330 { "else", RID_ELSE, 0 },
3331 { "enum", RID_ENUM, 0 },
3332 { "extern", RID_EXTERN, 0 },
3333 { "float", RID_FLOAT, 0 },
3334 { "for", RID_FOR, 0 },
3335 { "goto", RID_GOTO, 0 },
3336 { "if", RID_IF, 0 },
3337 { "inline", RID_INLINE, D_EXT89 },
3338 { "int", RID_INT, 0 },
3339 { "long", RID_LONG, 0 },
3340 { "register", RID_REGISTER, 0 },
3341 { "restrict", RID_RESTRICT, D_C89 },
3342 { "return", RID_RETURN, 0 },
3343 { "short", RID_SHORT, 0 },
3344 { "signed", RID_SIGNED, 0 },
3345 { "sizeof", RID_SIZEOF, 0 },
3346 { "static", RID_STATIC, 0 },
3347 { "struct", RID_STRUCT, 0 },
3348 { "switch", RID_SWITCH, 0 },
3349 { "typedef", RID_TYPEDEF, 0 },
3350 { "typeof", RID_TYPEOF, D_EXT },
3351 { "union", RID_UNION, 0 },
3352 { "unsigned", RID_UNSIGNED, 0 },
3353 { "void", RID_VOID, 0 },
3354 { "volatile", RID_VOLATILE, 0 },
3355 { "while", RID_WHILE, 0 },
3356@@ifobjc
3357 { "id", RID_ID, D_OBJC },
3358
3359 /* These objc keywords are recognized only immediately after
3360 an '@'. */
3361 { "class", RID_AT_CLASS, D_OBJC },
3362 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3363 { "defs", RID_AT_DEFS, D_OBJC },
3364 { "encode", RID_AT_ENCODE, D_OBJC },
3365 { "end", RID_AT_END, D_OBJC },
3366 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3367 { "interface", RID_AT_INTERFACE, D_OBJC },
3368 { "private", RID_AT_PRIVATE, D_OBJC },
3369 { "protected", RID_AT_PROTECTED, D_OBJC },
3370 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3371 { "public", RID_AT_PUBLIC, D_OBJC },
3372 { "selector", RID_AT_SELECTOR, D_OBJC },
3373 { "throw", RID_AT_THROW, D_OBJC },
3374 { "try", RID_AT_TRY, D_OBJC },
3375 { "catch", RID_AT_CATCH, D_OBJC },
3376 { "finally", RID_AT_FINALLY, D_OBJC },
3377 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
3378 /* These are recognized only in protocol-qualifier context
3379 (see above) */
3380 { "bycopy", RID_BYCOPY, D_OBJC },
3381 { "byref", RID_BYREF, D_OBJC },
3382 { "in", RID_IN, D_OBJC },
3383 { "inout", RID_INOUT, D_OBJC },
3384 { "oneway", RID_ONEWAY, D_OBJC },
3385 { "out", RID_OUT, D_OBJC },
3386@@end_ifobjc
3387};
3388#define N_reswords (sizeof reswords / sizeof (struct resword))
3389
3390/* Table mapping from RID_* constants to yacc token numbers.
3391 Unfortunately we have to have entries for all the keywords in all
3392 three languages. */
3393static const short rid_to_yy[RID_MAX] =
3394{
3395 /* RID_STATIC */ STATIC,
3396 /* RID_UNSIGNED */ TYPESPEC,
3397 /* RID_LONG */ TYPESPEC,
3398 /* RID_CONST */ TYPE_QUAL,
3399 /* RID_EXTERN */ SCSPEC,
3400 /* RID_REGISTER */ SCSPEC,
3401 /* RID_TYPEDEF */ SCSPEC,
3402 /* RID_SHORT */ TYPESPEC,
3403 /* RID_INLINE */ SCSPEC,
3404 /* RID_VOLATILE */ TYPE_QUAL,
3405 /* RID_SIGNED */ TYPESPEC,
3406 /* RID_AUTO */ SCSPEC,
3407 /* RID_RESTRICT */ TYPE_QUAL,
3408
3409 /* C extensions */
3410 /* RID_COMPLEX */ TYPESPEC,
3411 /* RID_THREAD */ SCSPEC,
3412
3413 /* C++ */
3414 /* RID_FRIEND */ 0,
3415 /* RID_VIRTUAL */ 0,
3416 /* RID_EXPLICIT */ 0,
3417 /* RID_EXPORT */ 0,
3418 /* RID_MUTABLE */ 0,
3419
3420 /* ObjC */
3421 /* RID_IN */ TYPE_QUAL,
3422 /* RID_OUT */ TYPE_QUAL,
3423 /* RID_INOUT */ TYPE_QUAL,
3424 /* RID_BYCOPY */ TYPE_QUAL,
3425 /* RID_BYREF */ TYPE_QUAL,
3426 /* RID_ONEWAY */ TYPE_QUAL,
3427
3428 /* C */
3429 /* RID_INT */ TYPESPEC,
3430 /* RID_CHAR */ TYPESPEC,
3431 /* RID_FLOAT */ TYPESPEC,
3432 /* RID_DOUBLE */ TYPESPEC,
3433 /* RID_VOID */ TYPESPEC,
3434 /* RID_ENUM */ ENUM,
3435 /* RID_STRUCT */ STRUCT,
3436 /* RID_UNION */ UNION,
3437 /* RID_IF */ IF,
3438 /* RID_ELSE */ ELSE,
3439 /* RID_WHILE */ WHILE,
3440 /* RID_DO */ DO,
3441 /* RID_FOR */ FOR,
3442 /* RID_SWITCH */ SWITCH,
3443 /* RID_CASE */ CASE,
3444 /* RID_DEFAULT */ DEFAULT,
3445 /* RID_BREAK */ BREAK,
3446 /* RID_CONTINUE */ CONTINUE,
3447 /* RID_RETURN */ RETURN,
3448 /* RID_GOTO */ GOTO,
3449 /* RID_SIZEOF */ SIZEOF,
3450
3451 /* C extensions */
3452 /* RID_ASM */ ASM_KEYWORD,
3453 /* RID_TYPEOF */ TYPEOF,
3454 /* RID_ALIGNOF */ ALIGNOF,
3455 /* RID_ATTRIBUTE */ ATTRIBUTE,
3456 /* RID_VA_ARG */ VA_ARG,
3457 /* RID_EXTENSION */ EXTENSION,
3458 /* RID_IMAGPART */ IMAGPART,
3459 /* RID_REALPART */ REALPART,
3460 /* RID_LABEL */ LABEL,
3461 /* RID_PTRBASE */ PTR_BASE,
3462 /* RID_PTREXTENT */ PTR_EXTENT,
3463 /* RID_PTRVALUE */ PTR_VALUE,
3464
3465 /* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
3466 /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
3467
3468 /* RID_FUNCTION_NAME */ FUNC_NAME,
3469 /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME,
3470 /* RID_C99_FUNCTION_NAME */ FUNC_NAME,
3471
3472 /* C++ */
3473 /* RID_BOOL */ TYPESPEC,
3474 /* RID_WCHAR */ 0,
3475 /* RID_CLASS */ 0,
3476 /* RID_PUBLIC */ 0,
3477 /* RID_PRIVATE */ 0,
3478 /* RID_PROTECTED */ 0,
3479 /* RID_TEMPLATE */ 0,
3480 /* RID_NULL */ 0,
3481 /* RID_CATCH */ 0,
3482 /* RID_DELETE */ 0,
3483 /* RID_FALSE */ 0,
3484 /* RID_NAMESPACE */ 0,
3485 /* RID_NEW */ 0,
3486 /* RID_OFFSETOF */ 0,
3487 /* RID_OPERATOR */ 0,
3488 /* RID_THIS */ 0,
3489 /* RID_THROW */ 0,
3490 /* RID_TRUE */ 0,
3491 /* RID_TRY */ 0,
3492 /* RID_TYPENAME */ 0,
3493 /* RID_TYPEID */ 0,
3494 /* RID_USING */ 0,
3495
3496 /* casts */
3497 /* RID_CONSTCAST */ 0,
3498 /* RID_DYNCAST */ 0,
3499 /* RID_REINTCAST */ 0,
3500 /* RID_STATCAST */ 0,
3501
3502 /* Objective C */
3503 /* RID_ID */ OBJECTNAME,
3504 /* RID_AT_ENCODE */ ENCODE,
3505 /* RID_AT_END */ END,
3506 /* RID_AT_CLASS */ CLASS,
3507 /* RID_AT_ALIAS */ ALIAS,
3508 /* RID_AT_DEFS */ DEFS,
3509 /* RID_AT_PRIVATE */ PRIVATE,
3510 /* RID_AT_PROTECTED */ PROTECTED,
3511 /* RID_AT_PUBLIC */ PUBLIC,
3512 /* RID_AT_PROTOCOL */ PROTOCOL,
3513 /* RID_AT_SELECTOR */ SELECTOR,
3514 /* RID_AT_THROW */ AT_THROW,
3515 /* RID_AT_TRY */ AT_TRY,
3516 /* RID_AT_CATCH */ AT_CATCH,
3517 /* RID_AT_FINALLY */ AT_FINALLY,
3518 /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED,
3519 /* RID_AT_INTERFACE */ INTERFACE,
3520 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3521};
3522
3523static void
3524init_reswords (void)
3525{
3526 unsigned int i;
3527 tree id;
3528 int mask = (flag_isoc99 ? 0 : D_C89)
3529 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3530
3531 if (!c_dialect_objc ())
3532 mask |= D_OBJC;
3533
3534 ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
3535 for (i = 0; i < N_reswords; i++)
3536 {
3537 /* If a keyword is disabled, do not enter it into the table
3538 and so create a canonical spelling that isn't a keyword. */
3539 if (reswords[i].disable & mask)
3540 continue;
3541
3542 id = get_identifier (reswords[i].word);
3543 C_RID_CODE (id) = reswords[i].rid;
3544 C_IS_RESERVED_WORD (id) = 1;
3545 ridpointers [(int) reswords[i].rid] = id;
3546 }
3547}
3548
3549#define NAME(type) cpp_type2name (type)
3550
3551static void
3552yyerror (const char *msgid)
3553{
3554 c_parse_error (msgid, last_token, yylval.ttype);
3555}
3556
3557static int
3558yylexname (void)
3559{
3560 tree decl;
3561
3562@@ifobjc
3563 int objc_force_identifier = objc_need_raw_identifier;
3564 OBJC_NEED_RAW_IDENTIFIER (0);
3565@@end_ifobjc
3566
3567 if (C_IS_RESERVED_WORD (yylval.ttype))
3568 {
3569 enum rid rid_code = C_RID_CODE (yylval.ttype);
3570
3571@@ifobjc
3572 /* Turn non-typedefed refs to "id" into plain identifiers; this
3573 allows constructs like "void foo(id id);" to work. */
3574 if (rid_code == RID_ID)
3575 {
3576 decl = lookup_name (yylval.ttype);
3577 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3578 return IDENTIFIER;
3579 }
3580
3581 if (!OBJC_IS_AT_KEYWORD (rid_code)
3582 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3583@@end_ifobjc
3584 {
3585 /* Return the canonical spelling for this keyword. */
3586 yylval.ttype = ridpointers[(int) rid_code];
3587 return rid_to_yy[(int) rid_code];
3588 }
3589 }
3590
3591 decl = lookup_name (yylval.ttype);
3592 if (decl)
3593 {
3594 if (TREE_CODE (decl) == TYPE_DECL)
3595 return TYPENAME;
3596 }
3597@@ifobjc
3598 else
3599 {
3600 tree objc_interface_decl = is_class_name (yylval.ttype);
3601 /* ObjC class names are in the same namespace as variables and
3602 typedefs, and hence are shadowed by local declarations. */
3603 if (objc_interface_decl
3604 && (global_bindings_p ()
3605 || (!objc_force_identifier && !decl)))
3606 {
3607 yylval.ttype = objc_interface_decl;
3608 return CLASSNAME;
3609 }
3610 }
3611@@end_ifobjc
3612
3613 return IDENTIFIER;
3614}
3615
3616static inline int
3617_yylex (void)
3618{
3619 get_next:
3620 last_token = c_lex (&yylval.ttype);
3621 switch (last_token)
3622 {
3623 case CPP_EQ: return '=';
3624 case CPP_NOT: return '!';
3625 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3626 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3627 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3628 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3629 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3630 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3631 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3632 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3633 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3634 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3635 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3636 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3637
3638 case CPP_COMPL: return '~';
3639 case CPP_AND_AND: return ANDAND;
3640 case CPP_OR_OR: return OROR;
3641 case CPP_QUERY: return '?';
3642 case CPP_OPEN_PAREN: return '(';
3643 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3644 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3645 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3646 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3647
3648 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3649 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3650 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3651 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3652 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3653 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3654 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3655 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3656 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3657 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3658
3659 case CPP_OPEN_SQUARE: return '[';
3660 case CPP_CLOSE_SQUARE: return ']';
3661 case CPP_OPEN_BRACE: return '{';
3662 case CPP_CLOSE_BRACE: return '}';
3663 case CPP_ELLIPSIS: return ELLIPSIS;
3664
3665 case CPP_PLUS_PLUS: return PLUSPLUS;
3666 case CPP_MINUS_MINUS: return MINUSMINUS;
3667 case CPP_DEREF: return POINTSAT;
3668 case CPP_DOT: return '.';
3669
3670 /* The following tokens may affect the interpretation of any
3671 identifiers following, if doing Objective-C. */
3672 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3673 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3674 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3675 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3676
3677 case CPP_EOF:
3678 return 0;
3679
3680 case CPP_NAME:
3681 return yylexname ();
3682
3683 case CPP_AT_NAME:
3684 /* This only happens in Objective-C; it must be a keyword. */
3685 return rid_to_yy [(int) C_RID_CODE (yylval.ttype)];
3686
3687 case CPP_NUMBER:
3688 case CPP_CHAR:
3689 case CPP_WCHAR:
3690 return CONSTANT;
3691
3692 case CPP_STRING:
3693 case CPP_WSTRING:
3694 return STRING;
3695
3696 case CPP_OBJC_STRING:
3697 return OBJC_STRING;
3698
3699 /* These tokens are C++ specific (and will not be generated
3700 in C mode, but let's be cautious). */
3701 case CPP_SCOPE:
3702 case CPP_DEREF_STAR:
3703 case CPP_DOT_STAR:
3704 case CPP_MIN_EQ:
3705 case CPP_MAX_EQ:
3706 case CPP_MIN:
3707 case CPP_MAX:
3708 /* These tokens should not survive translation phase 4. */
3709 case CPP_HASH:
3710 case CPP_PASTE:
3711 error ("syntax error at '%s' token", NAME(last_token));
3712 goto get_next;
3713
3714 default:
3715 abort ();
3716 }
3717 /* NOTREACHED */
3718}
3719
3720static int
3721yylex (void)
3722{
3723 int r;
3724 timevar_push (TV_LEX);
3725 r = _yylex();
3726 timevar_pop (TV_LEX);
3727 return r;
3728}
3729
3730/* Function used when yydebug is set, to print a token in more detail. */
3731
3732static void
3733yyprint (FILE *file, int yychar, YYSTYPE yyl)
3734{
3735 tree t = yyl.ttype;
3736
3737 fprintf (file, " [%s]", NAME(last_token));
3738
3739 switch (yychar)
3740 {
3741 case IDENTIFIER:
3742 case TYPENAME:
3743 case OBJECTNAME:
3744 case TYPESPEC:
3745 case TYPE_QUAL:
3746 case SCSPEC:
3747 case STATIC:
3748 if (IDENTIFIER_POINTER (t))
3749 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3750 break;
3751
3752 case CONSTANT:
3753 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3754 if (TREE_CODE (t) == INTEGER_CST)
3755 {
3756 fputs (" ", file);
3757 fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
3758 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3759 }
3760 break;
3761 }
3762}
3763\f
3764/* This is not the ideal place to put these, but we have to get them out
3765 of c-lex.c because cp/lex.c has its own versions. */
3766
3767/* Parse the file. */
3768void
3769c_parse_file (void)
3770{
3771 yyparse ();
3772 /* In case there were missing closebraces, get us back to the global
3773 binding level. */
3774 while (! global_bindings_p ())
3775 poplevel (0, 0, 0);
3776 /* __FUNCTION__ is defined at file scope (""). This
3777 call may not be necessary as my tests indicate it
3778 still works without it. */
3779 finish_fname_decls ();
3780
3781 if (malloced_yyss)
3782 {
3783 free (malloced_yyss);
3784 free (malloced_yyvs);
3785 malloced_yyss = 0;
3786 }
3787}
3788
3789#include "gt-c-parse.h"