1 | /* YACC parser for C syntax and for Objective C. -*-c-*- |
---|
2 | Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc. |
---|
3 | |
---|
4 | This file is part of GNU CC. |
---|
5 | |
---|
6 | GNU CC is free software; you can redistribute it and/or modify |
---|
7 | it under the terms of the GNU General Public License as published by |
---|
8 | the Free Software Foundation; either version 2, or (at your option) |
---|
9 | any later version. |
---|
10 | |
---|
11 | GNU CC is distributed in the hope that it will be useful, |
---|
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
14 | GNU General Public License for more details. |
---|
15 | |
---|
16 | You should have received a copy of the GNU General Public License |
---|
17 | along with GNU CC; see the file COPYING. If not, write to |
---|
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
---|
19 | Boston, MA 02111-1307, USA. */ |
---|
20 | |
---|
21 | /* This file defines the grammar of C and that of Objective C. |
---|
22 | ifobjc ... end ifobjc conditionals contain code for Objective C only. |
---|
23 | ifc ... end ifc conditionals contain code for C only. |
---|
24 | Sed commands in Makefile.in are used to convert this file into |
---|
25 | c-parse.y and into objc-parse.y. */ |
---|
26 | |
---|
27 | /* To whomever it may concern: I have heard that such a thing was once |
---|
28 | written by AT&T, but I have never seen it. */ |
---|
29 | |
---|
30 | %expect 34 |
---|
31 | |
---|
32 | /* These are the 23 conflicts you should get in parse.output; |
---|
33 | the state numbers may vary if minor changes in the grammar are made. |
---|
34 | |
---|
35 | State 42 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
---|
36 | State 44 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
37 | State 103 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
38 | State 110 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
---|
39 | State 111 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
40 | State 115 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
41 | State 132 contains 1 shift/reduce conflict. (See comment at component_decl.) |
---|
42 | State 180 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
---|
43 | State 194 contains 2 shift/reduce conflict. (Four ways to parse this.) |
---|
44 | State 202 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
45 | State 214 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
46 | State 220 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
---|
47 | State 304 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
---|
48 | State 335 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
---|
49 | State 347 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.) |
---|
50 | State 352 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.) |
---|
51 | State 383 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
---|
52 | State 434 contains 2 shift/reduce conflicts. (Four ways to parse this.) */ |
---|
53 | |
---|
54 | |
---|
55 | %{ |
---|
56 | #include <stdio.h> |
---|
57 | #include <errno.h> |
---|
58 | #include <setjmp.h> |
---|
59 | |
---|
60 | #include "config.h" |
---|
61 | #include "tree.h" |
---|
62 | #include "input.h" |
---|
63 | #include "c-lex.h" |
---|
64 | #include "c-tree.h" |
---|
65 | #include "flags.h" |
---|
66 | |
---|
67 | #ifdef MULTIBYTE_CHARS |
---|
68 | #include <stdlib.h> |
---|
69 | #include <locale.h> |
---|
70 | #endif |
---|
71 | |
---|
72 | |
---|
73 | /* Since parsers are distinct for each language, put the language string |
---|
74 | definition here. */ |
---|
75 | char *language_string = "GNU C"; |
---|
76 | |
---|
77 | #ifndef errno |
---|
78 | extern int errno; |
---|
79 | #endif |
---|
80 | |
---|
81 | void yyerror (); |
---|
82 | |
---|
83 | /* Like YYERROR but do call yyerror. */ |
---|
84 | #define YYERROR1 { yyerror ("syntax error"); YYERROR; } |
---|
85 | |
---|
86 | /* Cause the `yydebug' variable to be defined. */ |
---|
87 | #define YYDEBUG 1 |
---|
88 | %} |
---|
89 | |
---|
90 | %start program |
---|
91 | |
---|
92 | %union {long itype; tree ttype; enum tree_code code; |
---|
93 | char *filename; int lineno; int ends_in_label; } |
---|
94 | |
---|
95 | /* All identifiers that are not reserved words |
---|
96 | and are not declared typedefs in the current block */ |
---|
97 | %token IDENTIFIER |
---|
98 | |
---|
99 | /* All identifiers that are declared typedefs in the current block. |
---|
100 | In some contexts, they are treated just like IDENTIFIER, |
---|
101 | but they can also serve as typespecs in declarations. */ |
---|
102 | %token TYPENAME |
---|
103 | |
---|
104 | /* Reserved words that specify storage class. |
---|
105 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
---|
106 | %token SCSPEC |
---|
107 | |
---|
108 | /* Reserved words that specify type. |
---|
109 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
---|
110 | %token TYPESPEC |
---|
111 | |
---|
112 | /* Reserved words that qualify type: "const" or "volatile". |
---|
113 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
---|
114 | %token TYPE_QUAL |
---|
115 | |
---|
116 | /* Character or numeric constants. |
---|
117 | yylval is the node for the constant. */ |
---|
118 | %token CONSTANT |
---|
119 | |
---|
120 | /* String constants in raw form. |
---|
121 | yylval is a STRING_CST node. */ |
---|
122 | %token STRING |
---|
123 | |
---|
124 | /* "...", used for functions with variable arglists. */ |
---|
125 | %token ELLIPSIS |
---|
126 | |
---|
127 | /* the reserved words */ |
---|
128 | /* SCO include files test "ASM", so use something else. */ |
---|
129 | %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT |
---|
130 | %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF |
---|
131 | %token ATTRIBUTE EXTENSION LABEL |
---|
132 | %token REALPART IMAGPART |
---|
133 | |
---|
134 | /* Add precedence rules to solve dangling else s/r conflict */ |
---|
135 | %nonassoc IF |
---|
136 | %nonassoc ELSE |
---|
137 | |
---|
138 | /* Define the operator tokens and their precedences. |
---|
139 | The value is an integer because, if used, it is the tree code |
---|
140 | to use in the expression made from the operator. */ |
---|
141 | |
---|
142 | %right <code> ASSIGN '=' |
---|
143 | %right <code> '?' ':' |
---|
144 | %left <code> OROR |
---|
145 | %left <code> ANDAND |
---|
146 | %left <code> '|' |
---|
147 | %left <code> '^' |
---|
148 | %left <code> '&' |
---|
149 | %left <code> EQCOMPARE |
---|
150 | %left <code> ARITHCOMPARE |
---|
151 | %left <code> LSHIFT RSHIFT |
---|
152 | %left <code> '+' '-' |
---|
153 | %left <code> '*' '/' '%' |
---|
154 | %right <code> UNARY PLUSPLUS MINUSMINUS |
---|
155 | %left HYPERUNARY |
---|
156 | %left <code> POINTSAT '.' '(' '[' |
---|
157 | |
---|
158 | /* The Objective-C keywords. These are included in C and in |
---|
159 | Objective C, so that the token codes are the same in both. */ |
---|
160 | %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE |
---|
161 | %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS |
---|
162 | |
---|
163 | /* Objective-C string constants in raw form. |
---|
164 | yylval is an OBJC_STRING_CST node. */ |
---|
165 | %token OBJC_STRING |
---|
166 | |
---|
167 | |
---|
168 | %type <code> unop |
---|
169 | |
---|
170 | %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist |
---|
171 | %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING |
---|
172 | %type <ttype> typed_declspecs reserved_declspecs |
---|
173 | %type <ttype> typed_typespecs reserved_typespecquals |
---|
174 | %type <ttype> declmods typespec typespecqual_reserved |
---|
175 | %type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual |
---|
176 | %type <ttype> initdecls notype_initdecls initdcl notype_initdcl |
---|
177 | %type <ttype> init maybeasm |
---|
178 | %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers |
---|
179 | %type <ttype> maybe_attribute attributes attribute attribute_list attrib |
---|
180 | %type <ttype> any_word |
---|
181 | |
---|
182 | %type <ttype> compstmt |
---|
183 | |
---|
184 | %type <ttype> declarator |
---|
185 | %type <ttype> notype_declarator after_type_declarator |
---|
186 | %type <ttype> parm_declarator |
---|
187 | |
---|
188 | %type <ttype> structsp component_decl_list component_decl_list2 |
---|
189 | %type <ttype> component_decl components component_declarator |
---|
190 | %type <ttype> enumlist enumerator |
---|
191 | %type <ttype> typename absdcl absdcl1 type_quals |
---|
192 | %type <ttype> xexpr parms parm identifiers |
---|
193 | |
---|
194 | %type <ttype> parmlist parmlist_1 parmlist_2 |
---|
195 | %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1 |
---|
196 | %type <ttype> identifiers_or_typenames |
---|
197 | |
---|
198 | %type <itype> setspecs |
---|
199 | |
---|
200 | %type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label |
---|
201 | |
---|
202 | %type <filename> save_filename |
---|
203 | %type <lineno> save_lineno |
---|
204 | |
---|
205 | |
---|
206 | %{ |
---|
207 | /* Number of statements (loosely speaking) seen so far. */ |
---|
208 | static int stmt_count; |
---|
209 | |
---|
210 | /* Input file and line number of the end of the body of last simple_if; |
---|
211 | used by the stmt-rule immediately after simple_if returns. */ |
---|
212 | static char *if_stmt_file; |
---|
213 | static int if_stmt_line; |
---|
214 | |
---|
215 | /* List of types and structure classes of the current declaration. */ |
---|
216 | static tree current_declspecs; |
---|
217 | static tree prefix_attributes = NULL_TREE; |
---|
218 | |
---|
219 | /* Stack of saved values of current_declspecs and prefix_attributes. */ |
---|
220 | static tree declspec_stack; |
---|
221 | |
---|
222 | /* 1 if we explained undeclared var errors. */ |
---|
223 | static int undeclared_variable_notice; |
---|
224 | |
---|
225 | |
---|
226 | /* Tell yyparse how to print a token's value, if yydebug is set. */ |
---|
227 | |
---|
228 | #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL) |
---|
229 | extern void yyprint (); |
---|
230 | %} |
---|
231 | |
---|
232 | %% |
---|
233 | program: /* empty */ |
---|
234 | { if (pedantic) |
---|
235 | pedwarn ("ANSI C forbids an empty source file"); |
---|
236 | finish_file (); |
---|
237 | } |
---|
238 | | extdefs |
---|
239 | { |
---|
240 | /* In case there were missing closebraces, |
---|
241 | get us back to the global binding level. */ |
---|
242 | while (! global_bindings_p ()) |
---|
243 | poplevel (0, 0, 0); |
---|
244 | finish_file (); |
---|
245 | } |
---|
246 | ; |
---|
247 | |
---|
248 | /* the reason for the strange actions in this rule |
---|
249 | is so that notype_initdecls when reached via datadef |
---|
250 | can find a valid list of type and sc specs in $0. */ |
---|
251 | |
---|
252 | extdefs: |
---|
253 | {$<ttype>$ = NULL_TREE; } extdef |
---|
254 | | extdefs {$<ttype>$ = NULL_TREE; } extdef |
---|
255 | ; |
---|
256 | |
---|
257 | extdef: |
---|
258 | fndef |
---|
259 | | datadef |
---|
260 | | ASM_KEYWORD '(' expr ')' ';' |
---|
261 | { STRIP_NOPS ($3); |
---|
262 | if ((TREE_CODE ($3) == ADDR_EXPR |
---|
263 | && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST) |
---|
264 | || TREE_CODE ($3) == STRING_CST) |
---|
265 | assemble_asm ($3); |
---|
266 | else |
---|
267 | error ("argument of `asm' is not a constant string"); } |
---|
268 | ; |
---|
269 | |
---|
270 | datadef: |
---|
271 | setspecs notype_initdecls ';' |
---|
272 | { if (pedantic) |
---|
273 | error ("ANSI C forbids data definition with no type or storage class"); |
---|
274 | else if (!flag_traditional) |
---|
275 | warning ("data definition has no type or storage class"); |
---|
276 | |
---|
277 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
278 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
279 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
280 | resume_momentary ($1); } |
---|
281 | | declmods setspecs notype_initdecls ';' |
---|
282 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
283 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
284 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
285 | resume_momentary ($2); } |
---|
286 | | typed_declspecs setspecs initdecls ';' |
---|
287 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
288 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
289 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
290 | resume_momentary ($2); } |
---|
291 | | declmods ';' |
---|
292 | { pedwarn ("empty declaration"); } |
---|
293 | | typed_declspecs ';' |
---|
294 | { shadow_tag ($1); } |
---|
295 | | error ';' |
---|
296 | | error '}' |
---|
297 | | ';' |
---|
298 | { if (pedantic) |
---|
299 | pedwarn ("ANSI C does not allow extra `;' outside of a function"); } |
---|
300 | ; |
---|
301 | |
---|
302 | fndef: |
---|
303 | typed_declspecs setspecs declarator |
---|
304 | { if (! start_function ($1, $3, prefix_attributes, |
---|
305 | NULL_TREE, 0)) |
---|
306 | YYERROR1; |
---|
307 | reinit_parse_for_function (); } |
---|
308 | xdecls |
---|
309 | { store_parm_decls (); } |
---|
310 | compstmt_or_error |
---|
311 | { finish_function (0); |
---|
312 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
313 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
314 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
315 | resume_momentary ($2); } |
---|
316 | | typed_declspecs setspecs declarator error |
---|
317 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
318 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
319 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
320 | resume_momentary ($2); } |
---|
321 | | declmods setspecs notype_declarator |
---|
322 | { if (! start_function ($1, $3, prefix_attributes, |
---|
323 | NULL_TREE, 0)) |
---|
324 | YYERROR1; |
---|
325 | reinit_parse_for_function (); } |
---|
326 | xdecls |
---|
327 | { store_parm_decls (); } |
---|
328 | compstmt_or_error |
---|
329 | { finish_function (0); |
---|
330 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
331 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
332 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
333 | resume_momentary ($2); } |
---|
334 | | declmods setspecs notype_declarator error |
---|
335 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
336 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
337 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
338 | resume_momentary ($2); } |
---|
339 | | setspecs notype_declarator |
---|
340 | { if (! start_function (NULL_TREE, $2, |
---|
341 | prefix_attributes, NULL_TREE, 0)) |
---|
342 | YYERROR1; |
---|
343 | reinit_parse_for_function (); } |
---|
344 | xdecls |
---|
345 | { store_parm_decls (); } |
---|
346 | compstmt_or_error |
---|
347 | { finish_function (0); |
---|
348 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
349 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
350 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
351 | resume_momentary ($1); } |
---|
352 | | setspecs notype_declarator error |
---|
353 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
354 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
355 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
356 | resume_momentary ($1); } |
---|
357 | ; |
---|
358 | |
---|
359 | identifier: |
---|
360 | IDENTIFIER |
---|
361 | | TYPENAME |
---|
362 | ; |
---|
363 | |
---|
364 | unop: '&' |
---|
365 | { $$ = ADDR_EXPR; } |
---|
366 | | '-' |
---|
367 | { $$ = NEGATE_EXPR; } |
---|
368 | | '+' |
---|
369 | { $$ = CONVERT_EXPR; } |
---|
370 | | PLUSPLUS |
---|
371 | { $$ = PREINCREMENT_EXPR; } |
---|
372 | | MINUSMINUS |
---|
373 | { $$ = PREDECREMENT_EXPR; } |
---|
374 | | '~' |
---|
375 | { $$ = BIT_NOT_EXPR; } |
---|
376 | | '!' |
---|
377 | { $$ = TRUTH_NOT_EXPR; } |
---|
378 | ; |
---|
379 | |
---|
380 | expr: nonnull_exprlist |
---|
381 | { $$ = build_compound_expr ($1); } |
---|
382 | ; |
---|
383 | |
---|
384 | exprlist: |
---|
385 | /* empty */ |
---|
386 | { $$ = NULL_TREE; } |
---|
387 | | nonnull_exprlist |
---|
388 | ; |
---|
389 | |
---|
390 | nonnull_exprlist: |
---|
391 | expr_no_commas |
---|
392 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
393 | | nonnull_exprlist ',' expr_no_commas |
---|
394 | { chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
395 | ; |
---|
396 | |
---|
397 | unary_expr: |
---|
398 | primary |
---|
399 | | '*' cast_expr %prec UNARY |
---|
400 | { $$ = build_indirect_ref ($2, "unary *"); } |
---|
401 | /* __extension__ turns off -pedantic for following primary. */ |
---|
402 | | EXTENSION |
---|
403 | { $<itype>1 = pedantic; |
---|
404 | pedantic = 0; } |
---|
405 | cast_expr %prec UNARY |
---|
406 | { $$ = $3; |
---|
407 | pedantic = $<itype>1; } |
---|
408 | | unop cast_expr %prec UNARY |
---|
409 | { $$ = build_unary_op ($1, $2, 0); |
---|
410 | overflow_warning ($$); } |
---|
411 | /* Refer to the address of a label as a pointer. */ |
---|
412 | | ANDAND identifier |
---|
413 | { tree label = lookup_label ($2); |
---|
414 | if (pedantic) |
---|
415 | pedwarn ("ANSI C forbids `&&'"); |
---|
416 | if (label == 0) |
---|
417 | $$ = null_pointer_node; |
---|
418 | else |
---|
419 | { |
---|
420 | TREE_USED (label) = 1; |
---|
421 | $$ = build1 (ADDR_EXPR, ptr_type_node, label); |
---|
422 | TREE_CONSTANT ($$) = 1; |
---|
423 | } |
---|
424 | } |
---|
425 | /* This seems to be impossible on some machines, so let's turn it off. |
---|
426 | You can use __builtin_next_arg to find the anonymous stack args. |
---|
427 | | '&' ELLIPSIS |
---|
428 | { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl)); |
---|
429 | $$ = error_mark_node; |
---|
430 | if (TREE_VALUE (tree_last (types)) == void_type_node) |
---|
431 | error ("`&...' used in function with fixed number of arguments"); |
---|
432 | else |
---|
433 | { |
---|
434 | if (pedantic) |
---|
435 | pedwarn ("ANSI C forbids `&...'"); |
---|
436 | $$ = tree_last (DECL_ARGUMENTS (current_function_decl)); |
---|
437 | $$ = build_unary_op (ADDR_EXPR, $$, 0); |
---|
438 | } } |
---|
439 | */ |
---|
440 | | SIZEOF unary_expr %prec UNARY |
---|
441 | { if (TREE_CODE ($2) == COMPONENT_REF |
---|
442 | && DECL_BIT_FIELD (TREE_OPERAND ($2, 1))) |
---|
443 | error ("`sizeof' applied to a bit-field"); |
---|
444 | $$ = c_sizeof (TREE_TYPE ($2)); } |
---|
445 | | SIZEOF '(' typename ')' %prec HYPERUNARY |
---|
446 | { $$ = c_sizeof (groktypename ($3)); } |
---|
447 | | ALIGNOF unary_expr %prec UNARY |
---|
448 | { $$ = c_alignof_expr ($2); } |
---|
449 | | ALIGNOF '(' typename ')' %prec HYPERUNARY |
---|
450 | { $$ = c_alignof (groktypename ($3)); } |
---|
451 | | REALPART cast_expr %prec UNARY |
---|
452 | { $$ = build_unary_op (REALPART_EXPR, $2, 0); } |
---|
453 | | IMAGPART cast_expr %prec UNARY |
---|
454 | { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); } |
---|
455 | ; |
---|
456 | |
---|
457 | cast_expr: |
---|
458 | unary_expr |
---|
459 | | '(' typename ')' cast_expr %prec UNARY |
---|
460 | { tree type = groktypename ($2); |
---|
461 | $$ = build_c_cast (type, $4); } |
---|
462 | | '(' typename ')' '{' |
---|
463 | { start_init (NULL_TREE, NULL, 0); |
---|
464 | $2 = groktypename ($2); |
---|
465 | really_start_incremental_init ($2); } |
---|
466 | initlist_maybe_comma '}' %prec UNARY |
---|
467 | { char *name; |
---|
468 | tree result = pop_init_level (0); |
---|
469 | tree type = $2; |
---|
470 | finish_init (); |
---|
471 | |
---|
472 | if (pedantic) |
---|
473 | pedwarn ("ANSI C forbids constructor expressions"); |
---|
474 | if (TYPE_NAME (type) != 0) |
---|
475 | { |
---|
476 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) |
---|
477 | name = IDENTIFIER_POINTER (TYPE_NAME (type)); |
---|
478 | else |
---|
479 | name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); |
---|
480 | } |
---|
481 | else |
---|
482 | name = ""; |
---|
483 | $$ = result; |
---|
484 | if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0) |
---|
485 | { |
---|
486 | int failure = complete_array_type (type, $$, 1); |
---|
487 | if (failure) |
---|
488 | abort (); |
---|
489 | } |
---|
490 | } |
---|
491 | ; |
---|
492 | |
---|
493 | expr_no_commas: |
---|
494 | cast_expr |
---|
495 | | expr_no_commas '+' expr_no_commas |
---|
496 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
497 | | expr_no_commas '-' expr_no_commas |
---|
498 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
499 | | expr_no_commas '*' expr_no_commas |
---|
500 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
501 | | expr_no_commas '/' expr_no_commas |
---|
502 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
503 | | expr_no_commas '%' expr_no_commas |
---|
504 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
505 | | expr_no_commas LSHIFT expr_no_commas |
---|
506 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
507 | | expr_no_commas RSHIFT expr_no_commas |
---|
508 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
509 | | expr_no_commas ARITHCOMPARE expr_no_commas |
---|
510 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
511 | | expr_no_commas EQCOMPARE expr_no_commas |
---|
512 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
513 | | expr_no_commas '&' expr_no_commas |
---|
514 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
515 | | expr_no_commas '|' expr_no_commas |
---|
516 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
517 | | expr_no_commas '^' expr_no_commas |
---|
518 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
519 | | expr_no_commas ANDAND expr_no_commas |
---|
520 | { $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $3); } |
---|
521 | | expr_no_commas OROR expr_no_commas |
---|
522 | { $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $3); } |
---|
523 | | expr_no_commas '?' xexpr ':' expr_no_commas |
---|
524 | { $$ = build_conditional_expr ($1, $3, $5); } |
---|
525 | | expr_no_commas '=' expr_no_commas |
---|
526 | { $$ = build_modify_expr ($1, NOP_EXPR, $3); |
---|
527 | C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR); } |
---|
528 | | expr_no_commas ASSIGN expr_no_commas |
---|
529 | { $$ = build_modify_expr ($1, $2, $3); |
---|
530 | /* This inhibits warnings in truthvalue_conversion. */ |
---|
531 | C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK); } |
---|
532 | ; |
---|
533 | |
---|
534 | primary: |
---|
535 | IDENTIFIER |
---|
536 | { |
---|
537 | $$ = lastiddecl; |
---|
538 | if (!$$ || $$ == error_mark_node) |
---|
539 | { |
---|
540 | if (yychar == YYEMPTY) |
---|
541 | yychar = YYLEX; |
---|
542 | if (yychar == '(') |
---|
543 | { |
---|
544 | { |
---|
545 | /* Ordinary implicit function declaration. */ |
---|
546 | $$ = implicitly_declare ($1); |
---|
547 | assemble_external ($$); |
---|
548 | TREE_USED ($$) = 1; |
---|
549 | } |
---|
550 | } |
---|
551 | else if (current_function_decl == 0) |
---|
552 | { |
---|
553 | error ("`%s' undeclared here (not in a function)", |
---|
554 | IDENTIFIER_POINTER ($1)); |
---|
555 | $$ = error_mark_node; |
---|
556 | } |
---|
557 | else |
---|
558 | { |
---|
559 | { |
---|
560 | if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node |
---|
561 | || IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl) |
---|
562 | { |
---|
563 | error ("`%s' undeclared (first use this function)", |
---|
564 | IDENTIFIER_POINTER ($1)); |
---|
565 | |
---|
566 | if (! undeclared_variable_notice) |
---|
567 | { |
---|
568 | error ("(Each undeclared identifier is reported only once"); |
---|
569 | error ("for each function it appears in.)"); |
---|
570 | undeclared_variable_notice = 1; |
---|
571 | } |
---|
572 | } |
---|
573 | $$ = error_mark_node; |
---|
574 | /* Prevent repeated error messages. */ |
---|
575 | IDENTIFIER_GLOBAL_VALUE ($1) = error_mark_node; |
---|
576 | IDENTIFIER_ERROR_LOCUS ($1) = current_function_decl; |
---|
577 | } |
---|
578 | } |
---|
579 | } |
---|
580 | else if (TREE_TYPE ($$) == error_mark_node) |
---|
581 | $$ = error_mark_node; |
---|
582 | else if (C_DECL_ANTICIPATED ($$)) |
---|
583 | { |
---|
584 | /* The first time we see a build-in function used, |
---|
585 | if it has not been declared. */ |
---|
586 | C_DECL_ANTICIPATED ($$) = 0; |
---|
587 | if (yychar == YYEMPTY) |
---|
588 | yychar = YYLEX; |
---|
589 | if (yychar == '(') |
---|
590 | { |
---|
591 | /* Omit the implicit declaration we |
---|
592 | would ordinarily do, so we don't lose |
---|
593 | the actual built in type. |
---|
594 | But print a diagnostic for the mismatch. */ |
---|
595 | if (TREE_CODE ($$) != FUNCTION_DECL) |
---|
596 | error ("`%s' implicitly declared as function", |
---|
597 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
598 | else if ((TYPE_MODE (TREE_TYPE (TREE_TYPE ($$))) |
---|
599 | != TYPE_MODE (integer_type_node)) |
---|
600 | && (TREE_TYPE (TREE_TYPE ($$)) |
---|
601 | != void_type_node)) |
---|
602 | pedwarn ("type mismatch in implicit declaration for built-in function `%s'", |
---|
603 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
604 | /* If it really returns void, change that to int. */ |
---|
605 | if (TREE_TYPE (TREE_TYPE ($$)) == void_type_node) |
---|
606 | TREE_TYPE ($$) |
---|
607 | = build_function_type (integer_type_node, |
---|
608 | TYPE_ARG_TYPES (TREE_TYPE ($$))); |
---|
609 | } |
---|
610 | else |
---|
611 | pedwarn ("built-in function `%s' used without declaration", |
---|
612 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
613 | |
---|
614 | /* Do what we would ordinarily do when a fn is used. */ |
---|
615 | assemble_external ($$); |
---|
616 | TREE_USED ($$) = 1; |
---|
617 | } |
---|
618 | else |
---|
619 | { |
---|
620 | assemble_external ($$); |
---|
621 | TREE_USED ($$) = 1; |
---|
622 | } |
---|
623 | |
---|
624 | if (TREE_CODE ($$) == CONST_DECL) |
---|
625 | { |
---|
626 | $$ = DECL_INITIAL ($$); |
---|
627 | /* This is to prevent an enum whose value is 0 |
---|
628 | from being considered a null pointer constant. */ |
---|
629 | $$ = build1 (NOP_EXPR, TREE_TYPE ($$), $$); |
---|
630 | TREE_CONSTANT ($$) = 1; |
---|
631 | } |
---|
632 | } |
---|
633 | | CONSTANT |
---|
634 | | string |
---|
635 | { $$ = combine_strings ($1); } |
---|
636 | | '(' expr ')' |
---|
637 | { char class = TREE_CODE_CLASS (TREE_CODE ($2)); |
---|
638 | if (class == 'e' || class == '1' |
---|
639 | || class == '2' || class == '<') |
---|
640 | C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK); |
---|
641 | $$ = $2; } |
---|
642 | | '(' error ')' |
---|
643 | { $$ = error_mark_node; } |
---|
644 | | '(' |
---|
645 | { if (current_function_decl == 0) |
---|
646 | { |
---|
647 | error ("braced-group within expression allowed only inside a function"); |
---|
648 | YYERROR; |
---|
649 | } |
---|
650 | /* We must force a BLOCK for this level |
---|
651 | so that, if it is not expanded later, |
---|
652 | there is a way to turn off the entire subtree of blocks |
---|
653 | that are contained in it. */ |
---|
654 | keep_next_level (); |
---|
655 | push_iterator_stack (); |
---|
656 | push_label_level (); |
---|
657 | $<ttype>$ = expand_start_stmt_expr (); } |
---|
658 | compstmt ')' |
---|
659 | { tree rtl_exp; |
---|
660 | if (pedantic) |
---|
661 | pedwarn ("ANSI C forbids braced-groups within expressions"); |
---|
662 | pop_iterator_stack (); |
---|
663 | pop_label_level (); |
---|
664 | rtl_exp = expand_end_stmt_expr ($<ttype>2); |
---|
665 | /* The statements have side effects, so the group does. */ |
---|
666 | TREE_SIDE_EFFECTS (rtl_exp) = 1; |
---|
667 | |
---|
668 | if (TREE_CODE ($3) == BLOCK) |
---|
669 | { |
---|
670 | /* Make a BIND_EXPR for the BLOCK already made. */ |
---|
671 | $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp), |
---|
672 | NULL_TREE, rtl_exp, $3); |
---|
673 | /* Remove the block from the tree at this point. |
---|
674 | It gets put back at the proper place |
---|
675 | when the BIND_EXPR is expanded. */ |
---|
676 | delete_block ($3); |
---|
677 | } |
---|
678 | else |
---|
679 | $$ = $3; |
---|
680 | } |
---|
681 | | primary '(' exprlist ')' %prec '.' |
---|
682 | { $$ = build_function_call ($1, $3); } |
---|
683 | | primary '[' expr ']' %prec '.' |
---|
684 | { $$ = build_array_ref ($1, $3); } |
---|
685 | | primary '.' identifier |
---|
686 | { |
---|
687 | $$ = build_component_ref ($1, $3); |
---|
688 | } |
---|
689 | | primary POINTSAT identifier |
---|
690 | { |
---|
691 | tree expr = build_indirect_ref ($1, "->"); |
---|
692 | |
---|
693 | $$ = build_component_ref (expr, $3); |
---|
694 | } |
---|
695 | | primary PLUSPLUS |
---|
696 | { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); } |
---|
697 | | primary MINUSMINUS |
---|
698 | { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); } |
---|
699 | ; |
---|
700 | |
---|
701 | /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */ |
---|
702 | string: |
---|
703 | STRING |
---|
704 | | string STRING |
---|
705 | { $$ = chainon ($1, $2); } |
---|
706 | ; |
---|
707 | |
---|
708 | |
---|
709 | xdecls: |
---|
710 | /* empty */ |
---|
711 | | datadecls |
---|
712 | | datadecls ELLIPSIS |
---|
713 | /* ... is used here to indicate a varargs function. */ |
---|
714 | { c_mark_varargs (); |
---|
715 | if (pedantic) |
---|
716 | pedwarn ("ANSI C does not permit use of `varargs.h'"); } |
---|
717 | ; |
---|
718 | |
---|
719 | /* The following are analogous to lineno_decl, decls and decl |
---|
720 | except that they do not allow nested functions. |
---|
721 | They are used for old-style parm decls. */ |
---|
722 | lineno_datadecl: |
---|
723 | save_filename save_lineno datadecl |
---|
724 | { } |
---|
725 | ; |
---|
726 | |
---|
727 | datadecls: |
---|
728 | lineno_datadecl |
---|
729 | | errstmt |
---|
730 | | datadecls lineno_datadecl |
---|
731 | | lineno_datadecl errstmt |
---|
732 | ; |
---|
733 | |
---|
734 | datadecl: |
---|
735 | typed_declspecs setspecs initdecls ';' |
---|
736 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
737 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
738 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
739 | resume_momentary ($2); } |
---|
740 | | declmods setspecs notype_initdecls ';' |
---|
741 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
742 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
743 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
744 | resume_momentary ($2); } |
---|
745 | | typed_declspecs ';' |
---|
746 | { shadow_tag_warned ($1, 1); |
---|
747 | pedwarn ("empty declaration"); } |
---|
748 | | declmods ';' |
---|
749 | { pedwarn ("empty declaration"); } |
---|
750 | ; |
---|
751 | |
---|
752 | /* This combination which saves a lineno before a decl |
---|
753 | is the normal thing to use, rather than decl itself. |
---|
754 | This is to avoid shift/reduce conflicts in contexts |
---|
755 | where statement labels are allowed. */ |
---|
756 | lineno_decl: |
---|
757 | save_filename save_lineno decl |
---|
758 | { } |
---|
759 | ; |
---|
760 | |
---|
761 | decls: |
---|
762 | lineno_decl |
---|
763 | | errstmt |
---|
764 | | decls lineno_decl |
---|
765 | | lineno_decl errstmt |
---|
766 | ; |
---|
767 | |
---|
768 | /* records the type and storage class specs to use for processing |
---|
769 | the declarators that follow. |
---|
770 | Maintains a stack of outer-level values of current_declspecs, |
---|
771 | for the sake of parm declarations nested in function declarators. */ |
---|
772 | setspecs: /* empty */ |
---|
773 | { $$ = suspend_momentary (); |
---|
774 | pending_xref_error (); |
---|
775 | declspec_stack = tree_cons (prefix_attributes, |
---|
776 | current_declspecs, |
---|
777 | declspec_stack); |
---|
778 | current_declspecs = $<ttype>0; |
---|
779 | prefix_attributes = NULL_TREE; } |
---|
780 | ; |
---|
781 | |
---|
782 | setattrs: /* empty */ |
---|
783 | { prefix_attributes = chainon (prefix_attributes, $<ttype>0); } |
---|
784 | ; |
---|
785 | |
---|
786 | decl: |
---|
787 | typed_declspecs setspecs initdecls ';' |
---|
788 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
789 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
790 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
791 | resume_momentary ($2); } |
---|
792 | | declmods setspecs notype_initdecls ';' |
---|
793 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
794 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
795 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
796 | resume_momentary ($2); } |
---|
797 | | typed_declspecs setspecs nested_function |
---|
798 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
799 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
800 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
801 | resume_momentary ($2); } |
---|
802 | | declmods setspecs notype_nested_function |
---|
803 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
804 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
805 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
806 | resume_momentary ($2); } |
---|
807 | | typed_declspecs ';' |
---|
808 | { shadow_tag ($1); } |
---|
809 | | declmods ';' |
---|
810 | { pedwarn ("empty declaration"); } |
---|
811 | ; |
---|
812 | |
---|
813 | /* Declspecs which contain at least one type specifier or typedef name. |
---|
814 | (Just `const' or `volatile' is not enough.) |
---|
815 | A typedef'd name following these is taken as a name to be declared. */ |
---|
816 | |
---|
817 | typed_declspecs: |
---|
818 | typespec reserved_declspecs |
---|
819 | { $$ = tree_cons (NULL_TREE, $1, $2); } |
---|
820 | | declmods typespec reserved_declspecs |
---|
821 | { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); } |
---|
822 | ; |
---|
823 | |
---|
824 | reserved_declspecs: /* empty */ |
---|
825 | { $$ = NULL_TREE; } |
---|
826 | | reserved_declspecs typespecqual_reserved |
---|
827 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
828 | | reserved_declspecs SCSPEC |
---|
829 | { if (extra_warnings) |
---|
830 | warning ("`%s' is not at beginning of declaration", |
---|
831 | IDENTIFIER_POINTER ($2)); |
---|
832 | $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
833 | ; |
---|
834 | |
---|
835 | /* List of just storage classes and type modifiers. |
---|
836 | A declaration can start with just this, but then it cannot be used |
---|
837 | to redeclare a typedef-name. */ |
---|
838 | |
---|
839 | declmods: |
---|
840 | TYPE_QUAL |
---|
841 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); |
---|
842 | TREE_STATIC ($$) = 1; } |
---|
843 | | SCSPEC |
---|
844 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); } |
---|
845 | | declmods TYPE_QUAL |
---|
846 | { $$ = tree_cons (NULL_TREE, $2, $1); |
---|
847 | TREE_STATIC ($$) = 1; } |
---|
848 | | declmods SCSPEC |
---|
849 | { if (extra_warnings && TREE_STATIC ($1)) |
---|
850 | warning ("`%s' is not at beginning of declaration", |
---|
851 | IDENTIFIER_POINTER ($2)); |
---|
852 | $$ = tree_cons (NULL_TREE, $2, $1); |
---|
853 | TREE_STATIC ($$) = TREE_STATIC ($1); } |
---|
854 | ; |
---|
855 | |
---|
856 | |
---|
857 | /* Used instead of declspecs where storage classes are not allowed |
---|
858 | (that is, for typenames and structure components). |
---|
859 | Don't accept a typedef-name if anything but a modifier precedes it. */ |
---|
860 | |
---|
861 | typed_typespecs: |
---|
862 | typespec reserved_typespecquals |
---|
863 | { $$ = tree_cons (NULL_TREE, $1, $2); } |
---|
864 | | nonempty_type_quals typespec reserved_typespecquals |
---|
865 | { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); } |
---|
866 | ; |
---|
867 | |
---|
868 | reserved_typespecquals: /* empty */ |
---|
869 | { $$ = NULL_TREE; } |
---|
870 | | reserved_typespecquals typespecqual_reserved |
---|
871 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
872 | ; |
---|
873 | |
---|
874 | /* A typespec (but not a type qualifier). |
---|
875 | Once we have seen one of these in a declaration, |
---|
876 | if a typedef name appears then it is being redeclared. */ |
---|
877 | |
---|
878 | typespec: TYPESPEC |
---|
879 | | structsp |
---|
880 | | TYPENAME |
---|
881 | { /* For a typedef name, record the meaning, not the name. |
---|
882 | In case of `foo foo, bar;'. */ |
---|
883 | $$ = lookup_name ($1); } |
---|
884 | | TYPEOF '(' expr ')' |
---|
885 | { $$ = TREE_TYPE ($3); } |
---|
886 | | TYPEOF '(' typename ')' |
---|
887 | { $$ = groktypename ($3); } |
---|
888 | ; |
---|
889 | |
---|
890 | /* A typespec that is a reserved word, or a type qualifier. */ |
---|
891 | |
---|
892 | typespecqual_reserved: TYPESPEC |
---|
893 | | TYPE_QUAL |
---|
894 | | structsp |
---|
895 | ; |
---|
896 | |
---|
897 | initdecls: |
---|
898 | initdcl |
---|
899 | | initdecls ',' initdcl |
---|
900 | ; |
---|
901 | |
---|
902 | notype_initdecls: |
---|
903 | notype_initdcl |
---|
904 | | notype_initdecls ',' initdcl |
---|
905 | ; |
---|
906 | |
---|
907 | maybeasm: |
---|
908 | /* empty */ |
---|
909 | { $$ = NULL_TREE; } |
---|
910 | | ASM_KEYWORD '(' string ')' |
---|
911 | { if (TREE_CHAIN ($3)) $3 = combine_strings ($3); |
---|
912 | $$ = $3; |
---|
913 | } |
---|
914 | ; |
---|
915 | |
---|
916 | initdcl: |
---|
917 | declarator maybeasm maybe_attribute '=' |
---|
918 | { $<ttype>$ = start_decl ($1, current_declspecs, 1, |
---|
919 | $3, prefix_attributes); |
---|
920 | start_init ($<ttype>$, $2, global_bindings_p ()); } |
---|
921 | init |
---|
922 | /* Note how the declaration of the variable is in effect while its init is parsed! */ |
---|
923 | { finish_init (); |
---|
924 | finish_decl ($<ttype>5, $6, $2); } |
---|
925 | | declarator maybeasm maybe_attribute |
---|
926 | { tree d = start_decl ($1, current_declspecs, 0, |
---|
927 | $3, prefix_attributes); |
---|
928 | finish_decl (d, NULL_TREE, $2); |
---|
929 | } |
---|
930 | ; |
---|
931 | |
---|
932 | notype_initdcl: |
---|
933 | notype_declarator maybeasm maybe_attribute '=' |
---|
934 | { $<ttype>$ = start_decl ($1, current_declspecs, 1, |
---|
935 | $3, prefix_attributes); |
---|
936 | start_init ($<ttype>$, $2, global_bindings_p ()); } |
---|
937 | init |
---|
938 | /* Note how the declaration of the variable is in effect while its init is parsed! */ |
---|
939 | { finish_init (); |
---|
940 | decl_attributes ($<ttype>5, $3, prefix_attributes); |
---|
941 | finish_decl ($<ttype>5, $6, $2); } |
---|
942 | | notype_declarator maybeasm maybe_attribute |
---|
943 | { tree d = start_decl ($1, current_declspecs, 0, |
---|
944 | $3, prefix_attributes); |
---|
945 | finish_decl (d, NULL_TREE, $2); } |
---|
946 | ; |
---|
947 | /* the * rules are dummies to accept the Apollo extended syntax |
---|
948 | so that the header files compile. */ |
---|
949 | maybe_attribute: |
---|
950 | /* empty */ |
---|
951 | { $$ = NULL_TREE; } |
---|
952 | | attributes |
---|
953 | { $$ = $1; } |
---|
954 | ; |
---|
955 | |
---|
956 | attributes: |
---|
957 | attribute |
---|
958 | { $$ = $1; } |
---|
959 | | attributes attribute |
---|
960 | { $$ = chainon ($1, $2); } |
---|
961 | ; |
---|
962 | |
---|
963 | attribute: |
---|
964 | ATTRIBUTE '(' '(' attribute_list ')' ')' |
---|
965 | { $$ = $4; } |
---|
966 | ; |
---|
967 | |
---|
968 | attribute_list: |
---|
969 | attrib |
---|
970 | { $$ = $1; } |
---|
971 | | attribute_list ',' attrib |
---|
972 | { $$ = chainon ($1, $3); } |
---|
973 | ; |
---|
974 | |
---|
975 | attrib: |
---|
976 | /* empty */ |
---|
977 | { $$ = NULL_TREE; } |
---|
978 | | any_word |
---|
979 | { $$ = build_tree_list ($1, NULL_TREE); } |
---|
980 | | any_word '(' IDENTIFIER ')' |
---|
981 | { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); } |
---|
982 | | any_word '(' IDENTIFIER ',' nonnull_exprlist ')' |
---|
983 | { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); } |
---|
984 | | any_word '(' exprlist ')' |
---|
985 | { $$ = build_tree_list ($1, $3); } |
---|
986 | ; |
---|
987 | |
---|
988 | /* This still leaves out most reserved keywords, |
---|
989 | shouldn't we include them? */ |
---|
990 | |
---|
991 | any_word: |
---|
992 | identifier |
---|
993 | | SCSPEC |
---|
994 | | TYPESPEC |
---|
995 | | TYPE_QUAL |
---|
996 | ; |
---|
997 | |
---|
998 | /* Initializers. `init' is the entry point. */ |
---|
999 | |
---|
1000 | init: |
---|
1001 | expr_no_commas |
---|
1002 | | '{' |
---|
1003 | { really_start_incremental_init (NULL_TREE); |
---|
1004 | /* Note that the call to clear_momentary |
---|
1005 | is in process_init_element. */ |
---|
1006 | push_momentary (); } |
---|
1007 | initlist_maybe_comma '}' |
---|
1008 | { $$ = pop_init_level (0); |
---|
1009 | if ($$ == error_mark_node |
---|
1010 | && ! (yychar == STRING || yychar == CONSTANT)) |
---|
1011 | pop_momentary (); |
---|
1012 | else |
---|
1013 | pop_momentary_nofree (); } |
---|
1014 | |
---|
1015 | | error |
---|
1016 | { $$ = error_mark_node; } |
---|
1017 | ; |
---|
1018 | |
---|
1019 | /* `initlist_maybe_comma' is the guts of an initializer in braces. */ |
---|
1020 | initlist_maybe_comma: |
---|
1021 | /* empty */ |
---|
1022 | { if (pedantic) |
---|
1023 | pedwarn ("ANSI C forbids empty initializer braces"); } |
---|
1024 | | initlist1 maybecomma |
---|
1025 | ; |
---|
1026 | |
---|
1027 | initlist1: |
---|
1028 | initelt |
---|
1029 | | initlist1 ',' initelt |
---|
1030 | ; |
---|
1031 | |
---|
1032 | /* `initelt' is a single element of an initializer. |
---|
1033 | It may use braces. */ |
---|
1034 | initelt: |
---|
1035 | expr_no_commas |
---|
1036 | { process_init_element ($1); } |
---|
1037 | | '{' |
---|
1038 | { push_init_level (0); } |
---|
1039 | initlist_maybe_comma '}' |
---|
1040 | { process_init_element (pop_init_level (0)); } |
---|
1041 | | error |
---|
1042 | /* These are for labeled elements. The syntax for an array element |
---|
1043 | initializer conflicts with the syntax for an Objective-C message, |
---|
1044 | so don't include these productions in the Objective-C grammar. */ |
---|
1045 | | '[' expr_no_commas ELLIPSIS expr_no_commas ']' '=' |
---|
1046 | { set_init_index ($2, $4); } |
---|
1047 | initelt |
---|
1048 | | '[' expr_no_commas ']' '=' |
---|
1049 | { set_init_index ($2, NULL_TREE); } |
---|
1050 | initelt |
---|
1051 | | '[' expr_no_commas ']' |
---|
1052 | { set_init_index ($2, NULL_TREE); } |
---|
1053 | initelt |
---|
1054 | | identifier ':' |
---|
1055 | { set_init_label ($1); } |
---|
1056 | initelt |
---|
1057 | | '.' identifier '=' |
---|
1058 | { set_init_label ($2); } |
---|
1059 | initelt |
---|
1060 | ; |
---|
1061 | |
---|
1062 | nested_function: |
---|
1063 | declarator |
---|
1064 | { push_c_function_context (); |
---|
1065 | if (! start_function (current_declspecs, $1, |
---|
1066 | prefix_attributes, NULL_TREE, 1)) |
---|
1067 | { |
---|
1068 | pop_c_function_context (); |
---|
1069 | YYERROR1; |
---|
1070 | } |
---|
1071 | reinit_parse_for_function (); } |
---|
1072 | xdecls |
---|
1073 | { store_parm_decls (); } |
---|
1074 | /* This used to use compstmt_or_error. |
---|
1075 | That caused a bug with input `f(g) int g {}', |
---|
1076 | where the use of YYERROR1 above caused an error |
---|
1077 | which then was handled by compstmt_or_error. |
---|
1078 | There followed a repeated execution of that same rule, |
---|
1079 | which called YYERROR1 again, and so on. */ |
---|
1080 | compstmt |
---|
1081 | { finish_function (1); |
---|
1082 | pop_c_function_context (); } |
---|
1083 | ; |
---|
1084 | |
---|
1085 | notype_nested_function: |
---|
1086 | notype_declarator |
---|
1087 | { push_c_function_context (); |
---|
1088 | if (! start_function (current_declspecs, $1, |
---|
1089 | prefix_attributes, NULL_TREE, 1)) |
---|
1090 | { |
---|
1091 | pop_c_function_context (); |
---|
1092 | YYERROR1; |
---|
1093 | } |
---|
1094 | reinit_parse_for_function (); } |
---|
1095 | xdecls |
---|
1096 | { store_parm_decls (); } |
---|
1097 | /* This used to use compstmt_or_error. |
---|
1098 | That caused a bug with input `f(g) int g {}', |
---|
1099 | where the use of YYERROR1 above caused an error |
---|
1100 | which then was handled by compstmt_or_error. |
---|
1101 | There followed a repeated execution of that same rule, |
---|
1102 | which called YYERROR1 again, and so on. */ |
---|
1103 | compstmt |
---|
1104 | { finish_function (1); |
---|
1105 | pop_c_function_context (); } |
---|
1106 | ; |
---|
1107 | |
---|
1108 | /* Any kind of declarator (thus, all declarators allowed |
---|
1109 | after an explicit typespec). */ |
---|
1110 | |
---|
1111 | declarator: |
---|
1112 | after_type_declarator |
---|
1113 | | notype_declarator |
---|
1114 | ; |
---|
1115 | |
---|
1116 | /* A declarator that is allowed only after an explicit typespec. */ |
---|
1117 | |
---|
1118 | after_type_declarator: |
---|
1119 | '(' after_type_declarator ')' |
---|
1120 | { $$ = $2; } |
---|
1121 | | after_type_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1122 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1123 | /* | after_type_declarator '(' error ')' %prec '.' |
---|
1124 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1125 | poplevel (0, 0, 0); } */ |
---|
1126 | | after_type_declarator '[' expr ']' %prec '.' |
---|
1127 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1128 | | after_type_declarator '[' ']' %prec '.' |
---|
1129 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1130 | | '*' type_quals after_type_declarator %prec UNARY |
---|
1131 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1132 | | attributes setattrs after_type_declarator |
---|
1133 | { $$ = $3; } |
---|
1134 | | TYPENAME |
---|
1135 | ; |
---|
1136 | |
---|
1137 | /* Kinds of declarator that can appear in a parameter list |
---|
1138 | in addition to notype_declarator. This is like after_type_declarator |
---|
1139 | but does not allow a typedef name in parentheses as an identifier |
---|
1140 | (because it would conflict with a function with that typedef as arg). */ |
---|
1141 | |
---|
1142 | parm_declarator: |
---|
1143 | parm_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1144 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1145 | /* | parm_declarator '(' error ')' %prec '.' |
---|
1146 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1147 | poplevel (0, 0, 0); } */ |
---|
1148 | | parm_declarator '[' expr ']' %prec '.' |
---|
1149 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1150 | | parm_declarator '[' ']' %prec '.' |
---|
1151 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1152 | | '*' type_quals parm_declarator %prec UNARY |
---|
1153 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1154 | | attributes setattrs parm_declarator |
---|
1155 | { $$ = $3; } |
---|
1156 | | TYPENAME |
---|
1157 | ; |
---|
1158 | |
---|
1159 | /* A declarator allowed whether or not there has been |
---|
1160 | an explicit typespec. These cannot redeclare a typedef-name. */ |
---|
1161 | |
---|
1162 | notype_declarator: |
---|
1163 | notype_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1164 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1165 | /* | notype_declarator '(' error ')' %prec '.' |
---|
1166 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1167 | poplevel (0, 0, 0); } */ |
---|
1168 | | '(' notype_declarator ')' |
---|
1169 | { $$ = $2; } |
---|
1170 | | '*' type_quals notype_declarator %prec UNARY |
---|
1171 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1172 | | notype_declarator '[' expr ']' %prec '.' |
---|
1173 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1174 | | notype_declarator '[' ']' %prec '.' |
---|
1175 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1176 | | attributes setattrs notype_declarator |
---|
1177 | { $$ = $3; } |
---|
1178 | | IDENTIFIER |
---|
1179 | ; |
---|
1180 | |
---|
1181 | structsp: |
---|
1182 | STRUCT identifier '{' |
---|
1183 | { $$ = start_struct (RECORD_TYPE, $2); |
---|
1184 | /* Start scope of tag before parsing components. */ |
---|
1185 | } |
---|
1186 | component_decl_list '}' maybe_attribute |
---|
1187 | { $$ = finish_struct ($<ttype>4, $5, $7); } |
---|
1188 | | STRUCT '{' component_decl_list '}' maybe_attribute |
---|
1189 | { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE), |
---|
1190 | $3, $5); |
---|
1191 | } |
---|
1192 | | STRUCT identifier |
---|
1193 | { $$ = xref_tag (RECORD_TYPE, $2); } |
---|
1194 | | UNION identifier '{' |
---|
1195 | { $$ = start_struct (UNION_TYPE, $2); } |
---|
1196 | component_decl_list '}' maybe_attribute |
---|
1197 | { $$ = finish_struct ($<ttype>4, $5, $7); } |
---|
1198 | | UNION '{' component_decl_list '}' maybe_attribute |
---|
1199 | { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE), |
---|
1200 | $3, $5); |
---|
1201 | } |
---|
1202 | | UNION identifier |
---|
1203 | { $$ = xref_tag (UNION_TYPE, $2); } |
---|
1204 | | ENUM identifier '{' |
---|
1205 | { $<itype>3 = suspend_momentary (); |
---|
1206 | $$ = start_enum ($2); } |
---|
1207 | enumlist maybecomma_warn '}' maybe_attribute |
---|
1208 | { $$ = finish_enum ($<ttype>4, nreverse ($5), $8); |
---|
1209 | resume_momentary ($<itype>3); } |
---|
1210 | | ENUM '{' |
---|
1211 | { $<itype>2 = suspend_momentary (); |
---|
1212 | $$ = start_enum (NULL_TREE); } |
---|
1213 | enumlist maybecomma_warn '}' maybe_attribute |
---|
1214 | { $$ = finish_enum ($<ttype>3, nreverse ($4), $7); |
---|
1215 | resume_momentary ($<itype>2); } |
---|
1216 | | ENUM identifier |
---|
1217 | { $$ = xref_tag (ENUMERAL_TYPE, $2); } |
---|
1218 | ; |
---|
1219 | |
---|
1220 | maybecomma: |
---|
1221 | /* empty */ |
---|
1222 | | ',' |
---|
1223 | ; |
---|
1224 | |
---|
1225 | maybecomma_warn: |
---|
1226 | /* empty */ |
---|
1227 | | ',' |
---|
1228 | { if (pedantic) pedwarn ("comma at end of enumerator list"); } |
---|
1229 | ; |
---|
1230 | |
---|
1231 | component_decl_list: |
---|
1232 | component_decl_list2 |
---|
1233 | { $$ = $1; } |
---|
1234 | | component_decl_list2 component_decl |
---|
1235 | { $$ = chainon ($1, $2); |
---|
1236 | pedwarn ("no semicolon at end of struct or union"); } |
---|
1237 | ; |
---|
1238 | |
---|
1239 | component_decl_list2: /* empty */ |
---|
1240 | { $$ = NULL_TREE; } |
---|
1241 | | component_decl_list2 component_decl ';' |
---|
1242 | { $$ = chainon ($1, $2); } |
---|
1243 | | component_decl_list2 ';' |
---|
1244 | { if (pedantic) |
---|
1245 | pedwarn ("extra semicolon in struct or union specified"); } |
---|
1246 | ; |
---|
1247 | |
---|
1248 | /* There is a shift-reduce conflict here, because `components' may |
---|
1249 | start with a `typename'. It happens that shifting (the default resolution) |
---|
1250 | does the right thing, because it treats the `typename' as part of |
---|
1251 | a `typed_typespecs'. |
---|
1252 | |
---|
1253 | It is possible that this same technique would allow the distinction |
---|
1254 | between `notype_initdecls' and `initdecls' to be eliminated. |
---|
1255 | But I am being cautious and not trying it. */ |
---|
1256 | |
---|
1257 | component_decl: |
---|
1258 | typed_typespecs setspecs components |
---|
1259 | { $$ = $3; |
---|
1260 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1261 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1262 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1263 | resume_momentary ($2); } |
---|
1264 | | typed_typespecs |
---|
1265 | { if (pedantic) |
---|
1266 | pedwarn ("ANSI C forbids member declarations with no members"); |
---|
1267 | shadow_tag($1); |
---|
1268 | $$ = NULL_TREE; } |
---|
1269 | | nonempty_type_quals setspecs components |
---|
1270 | { $$ = $3; |
---|
1271 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1272 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1273 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1274 | resume_momentary ($2); } |
---|
1275 | | nonempty_type_quals |
---|
1276 | { if (pedantic) |
---|
1277 | pedwarn ("ANSI C forbids member declarations with no members"); |
---|
1278 | shadow_tag($1); |
---|
1279 | $$ = NULL_TREE; } |
---|
1280 | | error |
---|
1281 | { $$ = NULL_TREE; } |
---|
1282 | ; |
---|
1283 | |
---|
1284 | components: |
---|
1285 | component_declarator |
---|
1286 | | components ',' component_declarator |
---|
1287 | { $$ = chainon ($1, $3); } |
---|
1288 | ; |
---|
1289 | |
---|
1290 | component_declarator: |
---|
1291 | save_filename save_lineno declarator maybe_attribute |
---|
1292 | { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE); |
---|
1293 | decl_attributes ($$, $4, prefix_attributes); } |
---|
1294 | | save_filename save_lineno |
---|
1295 | declarator ':' expr_no_commas maybe_attribute |
---|
1296 | { $$ = grokfield ($1, $2, $3, current_declspecs, $5); |
---|
1297 | decl_attributes ($$, $6, prefix_attributes); } |
---|
1298 | | save_filename save_lineno ':' expr_no_commas maybe_attribute |
---|
1299 | { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4); |
---|
1300 | decl_attributes ($$, $5, prefix_attributes); } |
---|
1301 | ; |
---|
1302 | |
---|
1303 | /* We chain the enumerators in reverse order. |
---|
1304 | They are put in forward order where enumlist is used. |
---|
1305 | (The order used to be significant, but no longer is so. |
---|
1306 | However, we still maintain the order, just to be clean.) */ |
---|
1307 | |
---|
1308 | enumlist: |
---|
1309 | enumerator |
---|
1310 | | enumlist ',' enumerator |
---|
1311 | { if ($1 == error_mark_node) |
---|
1312 | $$ = $1; |
---|
1313 | else |
---|
1314 | $$ = chainon ($3, $1); } |
---|
1315 | | error |
---|
1316 | { $$ = error_mark_node; } |
---|
1317 | ; |
---|
1318 | |
---|
1319 | |
---|
1320 | enumerator: |
---|
1321 | identifier |
---|
1322 | { $$ = build_enumerator ($1, NULL_TREE); } |
---|
1323 | | identifier '=' expr_no_commas |
---|
1324 | { $$ = build_enumerator ($1, $3); } |
---|
1325 | ; |
---|
1326 | |
---|
1327 | typename: |
---|
1328 | typed_typespecs absdcl |
---|
1329 | { $$ = build_tree_list ($1, $2); } |
---|
1330 | | nonempty_type_quals absdcl |
---|
1331 | { $$ = build_tree_list ($1, $2); } |
---|
1332 | ; |
---|
1333 | |
---|
1334 | absdcl: /* an absolute declarator */ |
---|
1335 | /* empty */ |
---|
1336 | { $$ = NULL_TREE; } |
---|
1337 | | absdcl1 |
---|
1338 | ; |
---|
1339 | |
---|
1340 | nonempty_type_quals: |
---|
1341 | TYPE_QUAL |
---|
1342 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); } |
---|
1343 | | nonempty_type_quals TYPE_QUAL |
---|
1344 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
1345 | ; |
---|
1346 | |
---|
1347 | type_quals: |
---|
1348 | /* empty */ |
---|
1349 | { $$ = NULL_TREE; } |
---|
1350 | | type_quals TYPE_QUAL |
---|
1351 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
1352 | ; |
---|
1353 | |
---|
1354 | absdcl1: /* a nonempty absolute declarator */ |
---|
1355 | '(' absdcl1 ')' |
---|
1356 | { $$ = $2; } |
---|
1357 | /* `(typedef)1' is `int'. */ |
---|
1358 | | '*' type_quals absdcl1 %prec UNARY |
---|
1359 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1360 | | '*' type_quals %prec UNARY |
---|
1361 | { $$ = make_pointer_declarator ($2, NULL_TREE); } |
---|
1362 | | absdcl1 '(' parmlist %prec '.' |
---|
1363 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1364 | | absdcl1 '[' expr ']' %prec '.' |
---|
1365 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1366 | | absdcl1 '[' ']' %prec '.' |
---|
1367 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1368 | | '(' parmlist %prec '.' |
---|
1369 | { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); } |
---|
1370 | | '[' expr ']' %prec '.' |
---|
1371 | { $$ = build_nt (ARRAY_REF, NULL_TREE, $2); } |
---|
1372 | | '[' ']' %prec '.' |
---|
1373 | { $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); } |
---|
1374 | | attributes setattrs absdcl1 |
---|
1375 | { $$ = $3; } |
---|
1376 | ; |
---|
1377 | |
---|
1378 | /* at least one statement, the first of which parses without error. */ |
---|
1379 | /* stmts is used only after decls, so an invalid first statement |
---|
1380 | is actually regarded as an invalid decl and part of the decls. */ |
---|
1381 | |
---|
1382 | stmts: |
---|
1383 | lineno_stmt_or_labels |
---|
1384 | { |
---|
1385 | if (pedantic && $1) |
---|
1386 | pedwarn ("ANSI C forbids label at end of compound statement"); |
---|
1387 | } |
---|
1388 | ; |
---|
1389 | |
---|
1390 | lineno_stmt_or_labels: |
---|
1391 | lineno_stmt_or_label |
---|
1392 | | lineno_stmt_or_labels lineno_stmt_or_label |
---|
1393 | { $$ = $2; } |
---|
1394 | | lineno_stmt_or_labels errstmt |
---|
1395 | { $$ = 0; } |
---|
1396 | ; |
---|
1397 | |
---|
1398 | xstmts: |
---|
1399 | /* empty */ |
---|
1400 | | stmts |
---|
1401 | ; |
---|
1402 | |
---|
1403 | errstmt: error ';' |
---|
1404 | ; |
---|
1405 | |
---|
1406 | pushlevel: /* empty */ |
---|
1407 | { emit_line_note (input_filename, lineno); |
---|
1408 | pushlevel (0); |
---|
1409 | clear_last_expr (); |
---|
1410 | push_momentary (); |
---|
1411 | expand_start_bindings (0); |
---|
1412 | } |
---|
1413 | ; |
---|
1414 | |
---|
1415 | /* Read zero or more forward-declarations for labels |
---|
1416 | that nested functions can jump to. */ |
---|
1417 | maybe_label_decls: |
---|
1418 | /* empty */ |
---|
1419 | | label_decls |
---|
1420 | { if (pedantic) |
---|
1421 | pedwarn ("ANSI C forbids label declarations"); } |
---|
1422 | ; |
---|
1423 | |
---|
1424 | label_decls: |
---|
1425 | label_decl |
---|
1426 | | label_decls label_decl |
---|
1427 | ; |
---|
1428 | |
---|
1429 | label_decl: |
---|
1430 | LABEL identifiers_or_typenames ';' |
---|
1431 | { tree link; |
---|
1432 | for (link = $2; link; link = TREE_CHAIN (link)) |
---|
1433 | { |
---|
1434 | tree label = shadow_label (TREE_VALUE (link)); |
---|
1435 | C_DECLARED_LABEL_FLAG (label) = 1; |
---|
1436 | declare_nonlocal_label (label); |
---|
1437 | } |
---|
1438 | } |
---|
1439 | ; |
---|
1440 | |
---|
1441 | /* This is the body of a function definition. |
---|
1442 | It causes syntax errors to ignore to the next openbrace. */ |
---|
1443 | compstmt_or_error: |
---|
1444 | compstmt |
---|
1445 | {} |
---|
1446 | | error compstmt |
---|
1447 | ; |
---|
1448 | |
---|
1449 | compstmt: '{' '}' |
---|
1450 | { $$ = convert (void_type_node, integer_zero_node); } |
---|
1451 | | '{' pushlevel maybe_label_decls decls xstmts '}' |
---|
1452 | { emit_line_note (input_filename, lineno); |
---|
1453 | expand_end_bindings (getdecls (), 1, 0); |
---|
1454 | $$ = poplevel (1, 1, 0); |
---|
1455 | if (yychar == CONSTANT || yychar == STRING) |
---|
1456 | pop_momentary_nofree (); |
---|
1457 | else |
---|
1458 | pop_momentary (); } |
---|
1459 | | '{' pushlevel maybe_label_decls error '}' |
---|
1460 | { emit_line_note (input_filename, lineno); |
---|
1461 | expand_end_bindings (getdecls (), kept_level_p (), 0); |
---|
1462 | $$ = poplevel (kept_level_p (), 0, 0); |
---|
1463 | if (yychar == CONSTANT || yychar == STRING) |
---|
1464 | pop_momentary_nofree (); |
---|
1465 | else |
---|
1466 | pop_momentary (); } |
---|
1467 | | '{' pushlevel maybe_label_decls stmts '}' |
---|
1468 | { emit_line_note (input_filename, lineno); |
---|
1469 | expand_end_bindings (getdecls (), kept_level_p (), 0); |
---|
1470 | $$ = poplevel (kept_level_p (), 0, 0); |
---|
1471 | if (yychar == CONSTANT || yychar == STRING) |
---|
1472 | pop_momentary_nofree (); |
---|
1473 | else |
---|
1474 | pop_momentary (); } |
---|
1475 | ; |
---|
1476 | |
---|
1477 | /* Value is number of statements counted as of the closeparen. */ |
---|
1478 | simple_if: |
---|
1479 | if_prefix lineno_labeled_stmt |
---|
1480 | /* Make sure expand_end_cond is run once |
---|
1481 | for each call to expand_start_cond. |
---|
1482 | Otherwise a crash is likely. */ |
---|
1483 | | if_prefix error |
---|
1484 | ; |
---|
1485 | |
---|
1486 | if_prefix: |
---|
1487 | IF '(' expr ')' |
---|
1488 | { emit_line_note ($<filename>-1, $<lineno>0); |
---|
1489 | expand_start_cond (truthvalue_conversion ($3), 0); |
---|
1490 | $<itype>$ = stmt_count; |
---|
1491 | if_stmt_file = $<filename>-1; |
---|
1492 | if_stmt_line = $<lineno>0; |
---|
1493 | position_after_white_space (); } |
---|
1494 | ; |
---|
1495 | |
---|
1496 | /* This is a subroutine of stmt. |
---|
1497 | It is used twice, once for valid DO statements |
---|
1498 | and once for catching errors in parsing the end test. */ |
---|
1499 | do_stmt_start: |
---|
1500 | DO |
---|
1501 | { stmt_count++; |
---|
1502 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1503 | /* See comment in `while' alternative, above. */ |
---|
1504 | emit_nop (); |
---|
1505 | expand_start_loop_continue_elsewhere (1); |
---|
1506 | position_after_white_space (); } |
---|
1507 | lineno_labeled_stmt WHILE |
---|
1508 | { expand_loop_continue_here (); } |
---|
1509 | ; |
---|
1510 | |
---|
1511 | save_filename: |
---|
1512 | { $$ = input_filename; } |
---|
1513 | ; |
---|
1514 | |
---|
1515 | save_lineno: |
---|
1516 | { $$ = lineno; } |
---|
1517 | ; |
---|
1518 | |
---|
1519 | lineno_labeled_stmt: |
---|
1520 | save_filename save_lineno stmt |
---|
1521 | { } |
---|
1522 | /* | save_filename save_lineno error |
---|
1523 | { } |
---|
1524 | */ |
---|
1525 | | save_filename save_lineno label lineno_labeled_stmt |
---|
1526 | { } |
---|
1527 | ; |
---|
1528 | |
---|
1529 | lineno_stmt_or_label: |
---|
1530 | save_filename save_lineno stmt_or_label |
---|
1531 | { $$ = $3; } |
---|
1532 | ; |
---|
1533 | |
---|
1534 | stmt_or_label: |
---|
1535 | stmt |
---|
1536 | { $$ = 0; } |
---|
1537 | | label |
---|
1538 | { $$ = 1; } |
---|
1539 | ; |
---|
1540 | |
---|
1541 | /* Parse a single real statement, not including any labels. */ |
---|
1542 | stmt: |
---|
1543 | compstmt |
---|
1544 | { stmt_count++; } |
---|
1545 | | all_iter_stmt |
---|
1546 | | expr ';' |
---|
1547 | { stmt_count++; |
---|
1548 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1549 | /* It appears that this should not be done--that a non-lvalue array |
---|
1550 | shouldn't get an error if the value isn't used. |
---|
1551 | Section 3.2.2.1 says that an array lvalue gets converted to a pointer |
---|
1552 | if it appears as a top-level expression, |
---|
1553 | but says nothing about non-lvalue arrays. */ |
---|
1554 | #if 0 |
---|
1555 | /* Call default_conversion to get an error |
---|
1556 | on referring to a register array if pedantic. */ |
---|
1557 | if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE |
---|
1558 | || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE) |
---|
1559 | $1 = default_conversion ($1); |
---|
1560 | #endif |
---|
1561 | iterator_expand ($1); |
---|
1562 | clear_momentary (); } |
---|
1563 | | simple_if ELSE |
---|
1564 | { expand_start_else (); |
---|
1565 | $<itype>1 = stmt_count; |
---|
1566 | position_after_white_space (); } |
---|
1567 | lineno_labeled_stmt |
---|
1568 | { expand_end_cond (); |
---|
1569 | if (extra_warnings && stmt_count == $<itype>1) |
---|
1570 | warning ("empty body in an else-statement"); } |
---|
1571 | | simple_if %prec IF |
---|
1572 | { expand_end_cond (); |
---|
1573 | /* This warning is here instead of in simple_if, because we |
---|
1574 | do not want a warning if an empty if is followed by an |
---|
1575 | else statement. Increment stmt_count so we don't |
---|
1576 | give a second error if this is a nested `if'. */ |
---|
1577 | if (extra_warnings && stmt_count++ == $<itype>1) |
---|
1578 | warning_with_file_and_line (if_stmt_file, if_stmt_line, |
---|
1579 | "empty body in an if-statement"); } |
---|
1580 | /* Make sure expand_end_cond is run once |
---|
1581 | for each call to expand_start_cond. |
---|
1582 | Otherwise a crash is likely. */ |
---|
1583 | | simple_if ELSE error |
---|
1584 | { expand_end_cond (); } |
---|
1585 | | WHILE |
---|
1586 | { stmt_count++; |
---|
1587 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1588 | /* The emit_nop used to come before emit_line_note, |
---|
1589 | but that made the nop seem like part of the preceding line. |
---|
1590 | And that was confusing when the preceding line was |
---|
1591 | inside of an if statement and was not really executed. |
---|
1592 | I think it ought to work to put the nop after the line number. |
---|
1593 | We will see. --rms, July 15, 1991. */ |
---|
1594 | emit_nop (); } |
---|
1595 | '(' expr ')' |
---|
1596 | { /* Don't start the loop till we have succeeded |
---|
1597 | in parsing the end test. This is to make sure |
---|
1598 | that we end every loop we start. */ |
---|
1599 | expand_start_loop (1); |
---|
1600 | emit_line_note (input_filename, lineno); |
---|
1601 | expand_exit_loop_if_false (NULL_PTR, |
---|
1602 | truthvalue_conversion ($4)); |
---|
1603 | position_after_white_space (); } |
---|
1604 | lineno_labeled_stmt |
---|
1605 | { expand_end_loop (); } |
---|
1606 | | do_stmt_start |
---|
1607 | '(' expr ')' ';' |
---|
1608 | { emit_line_note (input_filename, lineno); |
---|
1609 | expand_exit_loop_if_false (NULL_PTR, |
---|
1610 | truthvalue_conversion ($3)); |
---|
1611 | expand_end_loop (); |
---|
1612 | clear_momentary (); } |
---|
1613 | /* This rule is needed to make sure we end every loop we start. */ |
---|
1614 | | do_stmt_start error |
---|
1615 | { expand_end_loop (); |
---|
1616 | clear_momentary (); } |
---|
1617 | | FOR |
---|
1618 | '(' xexpr ';' |
---|
1619 | { stmt_count++; |
---|
1620 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1621 | /* See comment in `while' alternative, above. */ |
---|
1622 | emit_nop (); |
---|
1623 | if ($3) c_expand_expr_stmt ($3); |
---|
1624 | /* Next step is to call expand_start_loop_continue_elsewhere, |
---|
1625 | but wait till after we parse the entire for (...). |
---|
1626 | Otherwise, invalid input might cause us to call that |
---|
1627 | fn without calling expand_end_loop. */ |
---|
1628 | } |
---|
1629 | xexpr ';' |
---|
1630 | /* Can't emit now; wait till after expand_start_loop... */ |
---|
1631 | { $<lineno>7 = lineno; |
---|
1632 | $<filename>$ = input_filename; } |
---|
1633 | xexpr ')' |
---|
1634 | { |
---|
1635 | /* Start the loop. Doing this after parsing |
---|
1636 | all the expressions ensures we will end the loop. */ |
---|
1637 | expand_start_loop_continue_elsewhere (1); |
---|
1638 | /* Emit the end-test, with a line number. */ |
---|
1639 | emit_line_note ($<filename>8, $<lineno>7); |
---|
1640 | if ($6) |
---|
1641 | expand_exit_loop_if_false (NULL_PTR, |
---|
1642 | truthvalue_conversion ($6)); |
---|
1643 | /* Don't let the tree nodes for $9 be discarded by |
---|
1644 | clear_momentary during the parsing of the next stmt. */ |
---|
1645 | push_momentary (); |
---|
1646 | $<lineno>7 = lineno; |
---|
1647 | $<filename>8 = input_filename; |
---|
1648 | position_after_white_space (); } |
---|
1649 | lineno_labeled_stmt |
---|
1650 | { /* Emit the increment expression, with a line number. */ |
---|
1651 | emit_line_note ($<filename>8, $<lineno>7); |
---|
1652 | expand_loop_continue_here (); |
---|
1653 | if ($9) |
---|
1654 | c_expand_expr_stmt ($9); |
---|
1655 | if (yychar == CONSTANT || yychar == STRING) |
---|
1656 | pop_momentary_nofree (); |
---|
1657 | else |
---|
1658 | pop_momentary (); |
---|
1659 | expand_end_loop (); } |
---|
1660 | | SWITCH '(' expr ')' |
---|
1661 | { stmt_count++; |
---|
1662 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1663 | c_expand_start_case ($3); |
---|
1664 | /* Don't let the tree nodes for $3 be discarded by |
---|
1665 | clear_momentary during the parsing of the next stmt. */ |
---|
1666 | push_momentary (); |
---|
1667 | position_after_white_space (); } |
---|
1668 | lineno_labeled_stmt |
---|
1669 | { expand_end_case ($3); |
---|
1670 | if (yychar == CONSTANT || yychar == STRING) |
---|
1671 | pop_momentary_nofree (); |
---|
1672 | else |
---|
1673 | pop_momentary (); } |
---|
1674 | | BREAK ';' |
---|
1675 | { stmt_count++; |
---|
1676 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1677 | if ( ! expand_exit_something ()) |
---|
1678 | error ("break statement not within loop or switch"); } |
---|
1679 | | CONTINUE ';' |
---|
1680 | { stmt_count++; |
---|
1681 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1682 | if (! expand_continue_loop (NULL_PTR)) |
---|
1683 | error ("continue statement not within a loop"); } |
---|
1684 | | RETURN ';' |
---|
1685 | { stmt_count++; |
---|
1686 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1687 | c_expand_return (NULL_TREE); } |
---|
1688 | | RETURN expr ';' |
---|
1689 | { stmt_count++; |
---|
1690 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1691 | c_expand_return ($2); } |
---|
1692 | | ASM_KEYWORD maybe_type_qual '(' expr ')' ';' |
---|
1693 | { stmt_count++; |
---|
1694 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1695 | STRIP_NOPS ($4); |
---|
1696 | if ((TREE_CODE ($4) == ADDR_EXPR |
---|
1697 | && TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST) |
---|
1698 | || TREE_CODE ($4) == STRING_CST) |
---|
1699 | expand_asm ($4); |
---|
1700 | else |
---|
1701 | error ("argument of `asm' is not a constant string"); } |
---|
1702 | /* This is the case with just output operands. */ |
---|
1703 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';' |
---|
1704 | { stmt_count++; |
---|
1705 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1706 | c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE, |
---|
1707 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1708 | input_filename, lineno); } |
---|
1709 | /* This is the case with input operands as well. */ |
---|
1710 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';' |
---|
1711 | { stmt_count++; |
---|
1712 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1713 | c_expand_asm_operands ($4, $6, $8, NULL_TREE, |
---|
1714 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1715 | input_filename, lineno); } |
---|
1716 | /* This is the case with clobbered registers as well. */ |
---|
1717 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' |
---|
1718 | asm_operands ':' asm_clobbers ')' ';' |
---|
1719 | { stmt_count++; |
---|
1720 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1721 | c_expand_asm_operands ($4, $6, $8, $10, |
---|
1722 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1723 | input_filename, lineno); } |
---|
1724 | | GOTO identifier ';' |
---|
1725 | { tree decl; |
---|
1726 | stmt_count++; |
---|
1727 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1728 | decl = lookup_label ($2); |
---|
1729 | if (decl != 0) |
---|
1730 | { |
---|
1731 | TREE_USED (decl) = 1; |
---|
1732 | expand_goto (decl); |
---|
1733 | } |
---|
1734 | } |
---|
1735 | | GOTO '*' expr ';' |
---|
1736 | { stmt_count++; |
---|
1737 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1738 | expand_computed_goto (convert (ptr_type_node, $3)); } |
---|
1739 | | ';' |
---|
1740 | ; |
---|
1741 | |
---|
1742 | all_iter_stmt: |
---|
1743 | all_iter_stmt_simple |
---|
1744 | /* | all_iter_stmt_with_decl */ |
---|
1745 | ; |
---|
1746 | |
---|
1747 | all_iter_stmt_simple: |
---|
1748 | FOR '(' primary ')' |
---|
1749 | { |
---|
1750 | /* The value returned by this action is */ |
---|
1751 | /* 1 if everything is OK */ |
---|
1752 | /* 0 in case of error or already bound iterator */ |
---|
1753 | |
---|
1754 | $<itype>$ = 0; |
---|
1755 | if (TREE_CODE ($3) != VAR_DECL) |
---|
1756 | error ("invalid `for (ITERATOR)' syntax"); |
---|
1757 | else if (! ITERATOR_P ($3)) |
---|
1758 | error ("`%s' is not an iterator", |
---|
1759 | IDENTIFIER_POINTER (DECL_NAME ($3))); |
---|
1760 | else if (ITERATOR_BOUND_P ($3)) |
---|
1761 | error ("`for (%s)' inside expansion of same iterator", |
---|
1762 | IDENTIFIER_POINTER (DECL_NAME ($3))); |
---|
1763 | else |
---|
1764 | { |
---|
1765 | $<itype>$ = 1; |
---|
1766 | iterator_for_loop_start ($3); |
---|
1767 | } |
---|
1768 | } |
---|
1769 | lineno_labeled_stmt |
---|
1770 | { |
---|
1771 | if ($<itype>5) |
---|
1772 | iterator_for_loop_end ($3); |
---|
1773 | } |
---|
1774 | |
---|
1775 | /* This really should allow any kind of declaration, |
---|
1776 | for generality. Fix it before turning it back on. |
---|
1777 | |
---|
1778 | all_iter_stmt_with_decl: |
---|
1779 | FOR '(' ITERATOR pushlevel setspecs iterator_spec ')' |
---|
1780 | { |
---|
1781 | */ /* The value returned by this action is */ |
---|
1782 | /* 1 if everything is OK */ |
---|
1783 | /* 0 in case of error or already bound iterator */ |
---|
1784 | /* |
---|
1785 | iterator_for_loop_start ($6); |
---|
1786 | } |
---|
1787 | lineno_labeled_stmt |
---|
1788 | { |
---|
1789 | iterator_for_loop_end ($6); |
---|
1790 | emit_line_note (input_filename, lineno); |
---|
1791 | expand_end_bindings (getdecls (), 1, 0); |
---|
1792 | $<ttype>$ = poplevel (1, 1, 0); |
---|
1793 | if (yychar == CONSTANT || yychar == STRING) |
---|
1794 | pop_momentary_nofree (); |
---|
1795 | else |
---|
1796 | pop_momentary (); |
---|
1797 | } |
---|
1798 | */ |
---|
1799 | |
---|
1800 | /* Any kind of label, including jump labels and case labels. |
---|
1801 | ANSI C accepts labels only before statements, but we allow them |
---|
1802 | also at the end of a compound statement. */ |
---|
1803 | |
---|
1804 | label: CASE expr_no_commas ':' |
---|
1805 | { register tree value = check_case_value ($2); |
---|
1806 | register tree label |
---|
1807 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
1808 | |
---|
1809 | stmt_count++; |
---|
1810 | |
---|
1811 | if (value != error_mark_node) |
---|
1812 | { |
---|
1813 | tree duplicate; |
---|
1814 | int success = pushcase (value, convert_and_check, |
---|
1815 | label, &duplicate); |
---|
1816 | if (success == 1) |
---|
1817 | error ("case label not within a switch statement"); |
---|
1818 | else if (success == 2) |
---|
1819 | { |
---|
1820 | error ("duplicate case value"); |
---|
1821 | error_with_decl (duplicate, "this is the first entry for that value"); |
---|
1822 | } |
---|
1823 | else if (success == 3) |
---|
1824 | warning ("case value out of range"); |
---|
1825 | else if (success == 5) |
---|
1826 | error ("case label within scope of cleanup or variable array"); |
---|
1827 | } |
---|
1828 | position_after_white_space (); } |
---|
1829 | | CASE expr_no_commas ELLIPSIS expr_no_commas ':' |
---|
1830 | { register tree value1 = check_case_value ($2); |
---|
1831 | register tree value2 = check_case_value ($4); |
---|
1832 | register tree label |
---|
1833 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
1834 | |
---|
1835 | stmt_count++; |
---|
1836 | |
---|
1837 | if (value1 != error_mark_node && value2 != error_mark_node) |
---|
1838 | { |
---|
1839 | tree duplicate; |
---|
1840 | int success = pushcase_range (value1, value2, |
---|
1841 | convert_and_check, label, |
---|
1842 | &duplicate); |
---|
1843 | if (success == 1) |
---|
1844 | error ("case label not within a switch statement"); |
---|
1845 | else if (success == 2) |
---|
1846 | { |
---|
1847 | error ("duplicate case value"); |
---|
1848 | error_with_decl (duplicate, "this is the first entry for that value"); |
---|
1849 | } |
---|
1850 | else if (success == 3) |
---|
1851 | warning ("case value out of range"); |
---|
1852 | else if (success == 4) |
---|
1853 | warning ("empty case range"); |
---|
1854 | else if (success == 5) |
---|
1855 | error ("case label within scope of cleanup or variable array"); |
---|
1856 | } |
---|
1857 | position_after_white_space (); } |
---|
1858 | | DEFAULT ':' |
---|
1859 | { |
---|
1860 | tree duplicate; |
---|
1861 | register tree label |
---|
1862 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
1863 | int success = pushcase (NULL_TREE, 0, label, &duplicate); |
---|
1864 | stmt_count++; |
---|
1865 | if (success == 1) |
---|
1866 | error ("default label not within a switch statement"); |
---|
1867 | else if (success == 2) |
---|
1868 | { |
---|
1869 | error ("multiple default labels in one switch"); |
---|
1870 | error_with_decl (duplicate, "this is the first default label"); |
---|
1871 | } |
---|
1872 | position_after_white_space (); } |
---|
1873 | | identifier ':' |
---|
1874 | { tree label = define_label (input_filename, lineno, $1); |
---|
1875 | stmt_count++; |
---|
1876 | emit_nop (); |
---|
1877 | if (label) |
---|
1878 | expand_label (label); |
---|
1879 | position_after_white_space (); } |
---|
1880 | ; |
---|
1881 | |
---|
1882 | /* Either a type-qualifier or nothing. First thing in an `asm' statement. */ |
---|
1883 | |
---|
1884 | maybe_type_qual: |
---|
1885 | /* empty */ |
---|
1886 | { emit_line_note (input_filename, lineno); |
---|
1887 | $$ = NULL_TREE; } |
---|
1888 | | TYPE_QUAL |
---|
1889 | { emit_line_note (input_filename, lineno); } |
---|
1890 | ; |
---|
1891 | |
---|
1892 | xexpr: |
---|
1893 | /* empty */ |
---|
1894 | { $$ = NULL_TREE; } |
---|
1895 | | expr |
---|
1896 | ; |
---|
1897 | |
---|
1898 | /* These are the operands other than the first string and colon |
---|
1899 | in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */ |
---|
1900 | asm_operands: /* empty */ |
---|
1901 | { $$ = NULL_TREE; } |
---|
1902 | | nonnull_asm_operands |
---|
1903 | ; |
---|
1904 | |
---|
1905 | nonnull_asm_operands: |
---|
1906 | asm_operand |
---|
1907 | | nonnull_asm_operands ',' asm_operand |
---|
1908 | { $$ = chainon ($1, $3); } |
---|
1909 | ; |
---|
1910 | |
---|
1911 | asm_operand: |
---|
1912 | STRING '(' expr ')' |
---|
1913 | { $$ = build_tree_list ($1, $3); } |
---|
1914 | ; |
---|
1915 | |
---|
1916 | asm_clobbers: |
---|
1917 | string |
---|
1918 | { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); } |
---|
1919 | | asm_clobbers ',' string |
---|
1920 | { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); } |
---|
1921 | ; |
---|
1922 | |
---|
1923 | /* This is what appears inside the parens in a function declarator. |
---|
1924 | Its value is a list of ..._TYPE nodes. */ |
---|
1925 | parmlist: |
---|
1926 | { pushlevel (0); |
---|
1927 | clear_parm_order (); |
---|
1928 | declare_parm_level (0); } |
---|
1929 | parmlist_1 |
---|
1930 | { $$ = $2; |
---|
1931 | parmlist_tags_warning (); |
---|
1932 | poplevel (0, 0, 0); } |
---|
1933 | ; |
---|
1934 | |
---|
1935 | parmlist_1: |
---|
1936 | parmlist_2 ')' |
---|
1937 | | parms ';' |
---|
1938 | { tree parm; |
---|
1939 | if (pedantic) |
---|
1940 | pedwarn ("ANSI C forbids forward parameter declarations"); |
---|
1941 | /* Mark the forward decls as such. */ |
---|
1942 | for (parm = getdecls (); parm; parm = TREE_CHAIN (parm)) |
---|
1943 | TREE_ASM_WRITTEN (parm) = 1; |
---|
1944 | clear_parm_order (); } |
---|
1945 | parmlist_1 |
---|
1946 | { $$ = $4; } |
---|
1947 | | error ')' |
---|
1948 | { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); } |
---|
1949 | ; |
---|
1950 | |
---|
1951 | /* This is what appears inside the parens in a function declarator. |
---|
1952 | Is value is represented in the format that grokdeclarator expects. */ |
---|
1953 | parmlist_2: /* empty */ |
---|
1954 | { $$ = get_parm_info (0); } |
---|
1955 | | ELLIPSIS |
---|
1956 | { $$ = get_parm_info (0); |
---|
1957 | /* Gcc used to allow this as an extension. However, it does |
---|
1958 | not work for all targets, and thus has been disabled. |
---|
1959 | Also, since func (...) and func () are indistinguishable, |
---|
1960 | it caused problems with the code in expand_builtin which |
---|
1961 | tries to verify that BUILT_IN_NEXT_ARG is being used |
---|
1962 | correctly. */ |
---|
1963 | error ("ANSI C requires a named argument before `...'"); |
---|
1964 | } |
---|
1965 | | parms |
---|
1966 | { $$ = get_parm_info (1); } |
---|
1967 | | parms ',' ELLIPSIS |
---|
1968 | { $$ = get_parm_info (0); } |
---|
1969 | ; |
---|
1970 | |
---|
1971 | parms: |
---|
1972 | parm |
---|
1973 | { push_parm_decl ($1); } |
---|
1974 | | parms ',' parm |
---|
1975 | { push_parm_decl ($3); } |
---|
1976 | ; |
---|
1977 | |
---|
1978 | /* A single parameter declaration or parameter type name, |
---|
1979 | as found in a parmlist. */ |
---|
1980 | parm: |
---|
1981 | typed_declspecs setspecs parm_declarator maybe_attribute |
---|
1982 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
1983 | $3), |
---|
1984 | build_tree_list (prefix_attributes, |
---|
1985 | $4)); |
---|
1986 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1987 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1988 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1989 | resume_momentary ($2); } |
---|
1990 | | typed_declspecs setspecs notype_declarator maybe_attribute |
---|
1991 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
1992 | $3), |
---|
1993 | build_tree_list (prefix_attributes, |
---|
1994 | $4)); |
---|
1995 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1996 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1997 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1998 | resume_momentary ($2); } |
---|
1999 | | typed_declspecs setspecs absdcl maybe_attribute |
---|
2000 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2001 | $3), |
---|
2002 | build_tree_list (prefix_attributes, |
---|
2003 | $4)); |
---|
2004 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2005 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2006 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2007 | resume_momentary ($2); } |
---|
2008 | | declmods setspecs notype_declarator maybe_attribute |
---|
2009 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2010 | $3), |
---|
2011 | build_tree_list (prefix_attributes, |
---|
2012 | $4)); |
---|
2013 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2014 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2015 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2016 | resume_momentary ($2); } |
---|
2017 | |
---|
2018 | | declmods setspecs absdcl maybe_attribute |
---|
2019 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2020 | $3), |
---|
2021 | build_tree_list (prefix_attributes, |
---|
2022 | $4)); |
---|
2023 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2024 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2025 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2026 | resume_momentary ($2); } |
---|
2027 | ; |
---|
2028 | |
---|
2029 | /* This is used in a function definition |
---|
2030 | where either a parmlist or an identifier list is ok. |
---|
2031 | Its value is a list of ..._TYPE nodes or a list of identifiers. */ |
---|
2032 | parmlist_or_identifiers: |
---|
2033 | { pushlevel (0); |
---|
2034 | clear_parm_order (); |
---|
2035 | declare_parm_level (1); } |
---|
2036 | parmlist_or_identifiers_1 |
---|
2037 | { $$ = $2; |
---|
2038 | parmlist_tags_warning (); |
---|
2039 | poplevel (0, 0, 0); } |
---|
2040 | ; |
---|
2041 | |
---|
2042 | parmlist_or_identifiers_1: |
---|
2043 | parmlist_1 |
---|
2044 | | identifiers ')' |
---|
2045 | { tree t; |
---|
2046 | for (t = $1; t; t = TREE_CHAIN (t)) |
---|
2047 | if (TREE_VALUE (t) == NULL_TREE) |
---|
2048 | error ("`...' in old-style identifier list"); |
---|
2049 | $$ = tree_cons (NULL_TREE, NULL_TREE, $1); } |
---|
2050 | ; |
---|
2051 | |
---|
2052 | /* A nonempty list of identifiers. */ |
---|
2053 | identifiers: |
---|
2054 | IDENTIFIER |
---|
2055 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
2056 | | identifiers ',' IDENTIFIER |
---|
2057 | { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
2058 | ; |
---|
2059 | |
---|
2060 | /* A nonempty list of identifiers, including typenames. */ |
---|
2061 | identifiers_or_typenames: |
---|
2062 | identifier |
---|
2063 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
2064 | | identifiers_or_typenames ',' identifier |
---|
2065 | { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
2066 | ; |
---|
2067 | |
---|
2068 | %% |
---|