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1/* C global declaration parser for genksyms.
2 Copyright 1996, 1997 Linux International.
3
4 New implementation contributed by Richard Henderson <rth@tamu.edu>
5 Based on original work by Bjorn Ekwall <bj0rn@blox.se>
6
7 This file is part of the Linux modutils.
8
9 This program is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2 of the License, or (at your
12 option) any later version.
13
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software Foundation,
21 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23
24%{
25
26#include <assert.h>
27#include <stdlib.h>
28#include <string.h>
29#include "genksyms.h"
30
31static int is_typedef;
32static int is_extern;
33static char *current_name;
34static struct string_list *decl_spec;
35
36static void yyerror(const char *);
37
38static inline void
39remove_node(struct string_list **p)
40{
41 struct string_list *node = *p;
42 *p = node->next;
43 free_node(node);
44}
45
46static inline void
47remove_list(struct string_list **pb, struct string_list **pe)
48{
49 struct string_list *b = *pb, *e = *pe;
50 *pb = e;
51 free_list(b, e);
52}
53
54/* Record definition of a struct/union/enum */
55static void record_compound(struct string_list **keyw,
56 struct string_list **ident,
57 struct string_list **body,
58 enum symbol_type type)
59{
60 struct string_list *b = *body, *i = *ident, *r;
61
62 if (i->in_source_file) {
63 remove_node(keyw);
64 (*ident)->tag = type;
65 remove_list(body, ident);
66 return;
67 }
68 r = copy_node(i); r->tag = type;
69 r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
70 add_symbol(i->string, type, b, is_extern);
71}
72
73%}
74
75%token ASM_KEYW
76%token ATTRIBUTE_KEYW
77%token AUTO_KEYW
78%token BOOL_KEYW
79%token CHAR_KEYW
80%token CONST_KEYW
81%token DOUBLE_KEYW
82%token ENUM_KEYW
83%token EXTERN_KEYW
84%token EXTENSION_KEYW
85%token FLOAT_KEYW
86%token INLINE_KEYW
87%token INT_KEYW
88%token LONG_KEYW
89%token REGISTER_KEYW
90%token RESTRICT_KEYW
91%token SHORT_KEYW
92%token SIGNED_KEYW
93%token STATIC_KEYW
94%token STRUCT_KEYW
95%token TYPEDEF_KEYW
96%token UNION_KEYW
97%token UNSIGNED_KEYW
98%token VOID_KEYW
99%token VOLATILE_KEYW
100%token TYPEOF_KEYW
101%token VA_LIST_KEYW
102
103%token EXPORT_SYMBOL_KEYW
104
105%token ASM_PHRASE
106%token ATTRIBUTE_PHRASE
107%token TYPEOF_PHRASE
108%token BRACE_PHRASE
109%token BRACKET_PHRASE
110%token EXPRESSION_PHRASE
111
112%token CHAR
113%token DOTS
114%token IDENT
115%token INT
116%token REAL
117%token STRING
118%token TYPE
119%token OTHER
120%token FILENAME
121
122%%
123
124declaration_seq:
125 declaration
126 | declaration_seq declaration
127 ;
128
129declaration:
130 { is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
131 declaration1
132 { free_list(*$2, NULL); *$2 = NULL; }
133 ;
134
135declaration1:
136 EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
137 { $$ = $4; }
138 | TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
139 { $$ = $3; }
140 | simple_declaration
141 | function_definition
142 | asm_definition
143 | export_definition
144 | error ';' { $$ = $2; }
145 | error '}' { $$ = $2; }
146 ;
147
148simple_declaration:
149 decl_specifier_seq_opt init_declarator_list_opt ';'
150 { if (current_name) {
151 struct string_list *decl = (*$3)->next;
152 (*$3)->next = NULL;
153 add_symbol(current_name,
154 is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
155 decl, is_extern);
156 current_name = NULL;
157 }
158 $$ = $3;
159 }
160 ;
161
162init_declarator_list_opt:
163 /* empty */ { $$ = NULL; }
164 | init_declarator_list
165 ;
166
167init_declarator_list:
168 init_declarator
169 { struct string_list *decl = *$1;
170 *$1 = NULL;
171 add_symbol(current_name,
172 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
173 current_name = NULL;
174 $$ = $1;
175 }
176 | init_declarator_list ',' init_declarator
177 { struct string_list *decl = *$3;
178 *$3 = NULL;
179 free_list(*$2, NULL);
180 *$2 = decl_spec;
181 add_symbol(current_name,
182 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
183 current_name = NULL;
184 $$ = $3;
185 }
186 ;
187
188init_declarator:
189 declarator asm_phrase_opt attribute_opt initializer_opt
190 { $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
191 ;
192
193/* Hang on to the specifiers so that we can reuse them. */
194decl_specifier_seq_opt:
195 /* empty */ { decl_spec = NULL; }
196 | decl_specifier_seq
197 ;
198
199decl_specifier_seq:
200 decl_specifier { decl_spec = *$1; }
201 | decl_specifier_seq decl_specifier { decl_spec = *$2; }
202 ;
203
204decl_specifier:
205 storage_class_specifier
206 { /* Version 2 checksumming ignores storage class, as that
207 is really irrelevant to the linkage. */
208 remove_node($1);
209 $$ = $1;
210 }
211 | type_specifier
212 ;
213
214storage_class_specifier:
215 AUTO_KEYW
216 | REGISTER_KEYW
217 | STATIC_KEYW
218 | EXTERN_KEYW { is_extern = 1; $$ = $1; }
219 | INLINE_KEYW { is_extern = 0; $$ = $1; }
220 ;
221
222type_specifier:
223 simple_type_specifier
224 | cvar_qualifier
225 | TYPEOF_KEYW '(' parameter_declaration ')'
226 | TYPEOF_PHRASE
227
228 /* References to s/u/e's defined elsewhere. Rearrange things
229 so that it is easier to expand the definition fully later. */
230 | STRUCT_KEYW IDENT
231 { remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
232 | UNION_KEYW IDENT
233 { remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
234 | ENUM_KEYW IDENT
235 { remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
236
237 /* Full definitions of an s/u/e. Record it. */
238 | STRUCT_KEYW IDENT class_body
239 { record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
240 | UNION_KEYW IDENT class_body
241 { record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
242 | ENUM_KEYW IDENT enum_body
243 { record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
244 /*
245 * Anonymous enum definition. Tell add_symbol() to restart its counter.
246 */
247 | ENUM_KEYW enum_body
248 { add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
249 /* Anonymous s/u definitions. Nothing needs doing. */
250 | STRUCT_KEYW class_body { $$ = $2; }
251 | UNION_KEYW class_body { $$ = $2; }
252 ;
253
254simple_type_specifier:
255 CHAR_KEYW
256 | SHORT_KEYW
257 | INT_KEYW
258 | LONG_KEYW
259 | SIGNED_KEYW
260 | UNSIGNED_KEYW
261 | FLOAT_KEYW
262 | DOUBLE_KEYW
263 | VOID_KEYW
264 | BOOL_KEYW
265 | VA_LIST_KEYW
266 | TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
267 ;
268
269ptr_operator:
270 '*' cvar_qualifier_seq_opt
271 { $$ = $2 ? $2 : $1; }
272 ;
273
274cvar_qualifier_seq_opt:
275 /* empty */ { $$ = NULL; }
276 | cvar_qualifier_seq
277 ;
278
279cvar_qualifier_seq:
280 cvar_qualifier
281 | cvar_qualifier_seq cvar_qualifier { $$ = $2; }
282 ;
283
284cvar_qualifier:
285 CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
286 | RESTRICT_KEYW
287 { /* restrict has no effect in prototypes so ignore it */
288 remove_node($1);
289 $$ = $1;
290 }
291 ;
292
293declarator:
294 ptr_operator declarator { $$ = $2; }
295 | direct_declarator
296 ;
297
298direct_declarator:
299 IDENT
300 { if (current_name != NULL) {
301 error_with_pos("unexpected second declaration name");
302 YYERROR;
303 } else {
304 current_name = (*$1)->string;
305 $$ = $1;
306 }
307 }
308 | TYPE
309 { if (current_name != NULL) {
310 error_with_pos("unexpected second declaration name");
311 YYERROR;
312 } else {
313 current_name = (*$1)->string;
314 $$ = $1;
315 }
316 }
317 | direct_declarator '(' parameter_declaration_clause ')'
318 { $$ = $4; }
319 | direct_declarator '(' error ')'
320 { $$ = $4; }
321 | direct_declarator BRACKET_PHRASE
322 { $$ = $2; }
323 | '(' declarator ')'
324 { $$ = $3; }
325 | '(' error ')'
326 { $$ = $3; }
327 ;
328
329/* Nested declarators differ from regular declarators in that they do
330 not record the symbols they find in the global symbol table. */
331nested_declarator:
332 ptr_operator nested_declarator { $$ = $2; }
333 | direct_nested_declarator
334 ;
335
336direct_nested_declarator:
337 IDENT
338 | TYPE
339 | direct_nested_declarator '(' parameter_declaration_clause ')'
340 { $$ = $4; }
341 | direct_nested_declarator '(' error ')'
342 { $$ = $4; }
343 | direct_nested_declarator BRACKET_PHRASE
344 { $$ = $2; }
345 | '(' nested_declarator ')'
346 { $$ = $3; }
347 | '(' error ')'
348 { $$ = $3; }
349 ;
350
351parameter_declaration_clause:
352 parameter_declaration_list_opt DOTS { $$ = $2; }
353 | parameter_declaration_list_opt
354 | parameter_declaration_list ',' DOTS { $$ = $3; }
355 ;
356
357parameter_declaration_list_opt:
358 /* empty */ { $$ = NULL; }
359 | parameter_declaration_list
360 ;
361
362parameter_declaration_list:
363 parameter_declaration
364 | parameter_declaration_list ',' parameter_declaration
365 { $$ = $3; }
366 ;
367
368parameter_declaration:
369 decl_specifier_seq m_abstract_declarator
370 { $$ = $2 ? $2 : $1; }
371 ;
372
373m_abstract_declarator:
374 ptr_operator m_abstract_declarator
375 { $$ = $2 ? $2 : $1; }
376 | direct_m_abstract_declarator
377 ;
378
379direct_m_abstract_declarator:
380 /* empty */ { $$ = NULL; }
381 | IDENT
382 { /* For version 2 checksums, we don't want to remember
383 private parameter names. */
384 remove_node($1);
385 $$ = $1;
386 }
387 /* This wasn't really a typedef name but an identifier that
388 shadows one. */
389 | TYPE
390 { remove_node($1);
391 $$ = $1;
392 }
393 | direct_m_abstract_declarator '(' parameter_declaration_clause ')'
394 { $$ = $4; }
395 | direct_m_abstract_declarator '(' error ')'
396 { $$ = $4; }
397 | direct_m_abstract_declarator BRACKET_PHRASE
398 { $$ = $2; }
399 | '(' m_abstract_declarator ')'
400 { $$ = $3; }
401 | '(' error ')'
402 { $$ = $3; }
403 ;
404
405function_definition:
406 decl_specifier_seq_opt declarator BRACE_PHRASE
407 { struct string_list *decl = *$2;
408 *$2 = NULL;
409 add_symbol(current_name, SYM_NORMAL, decl, is_extern);
410 $$ = $3;
411 }
412 ;
413
414initializer_opt:
415 /* empty */ { $$ = NULL; }
416 | initializer
417 ;
418
419/* We never care about the contents of an initializer. */
420initializer:
421 '=' EXPRESSION_PHRASE
422 { remove_list($2, &(*$1)->next); $$ = $2; }
423 ;
424
425class_body:
426 '{' member_specification_opt '}' { $$ = $3; }
427 | '{' error '}' { $$ = $3; }
428 ;
429
430member_specification_opt:
431 /* empty */ { $$ = NULL; }
432 | member_specification
433 ;
434
435member_specification:
436 member_declaration
437 | member_specification member_declaration { $$ = $2; }
438 ;
439
440member_declaration:
441 decl_specifier_seq_opt member_declarator_list_opt ';'
442 { $$ = $3; }
443 | error ';'
444 { $$ = $2; }
445 ;
446
447member_declarator_list_opt:
448 /* empty */ { $$ = NULL; }
449 | member_declarator_list
450 ;
451
452member_declarator_list:
453 member_declarator
454 | member_declarator_list ',' member_declarator { $$ = $3; }
455 ;
456
457member_declarator:
458 nested_declarator attribute_opt { $$ = $2 ? $2 : $1; }
459 | IDENT member_bitfield_declarator { $$ = $2; }
460 | member_bitfield_declarator
461 ;
462
463member_bitfield_declarator:
464 ':' EXPRESSION_PHRASE { $$ = $2; }
465 ;
466
467attribute_opt:
468 /* empty */ { $$ = NULL; }
469 | attribute_opt ATTRIBUTE_PHRASE
470 ;
471
472enum_body:
473 '{' enumerator_list '}' { $$ = $3; }
474 | '{' enumerator_list ',' '}' { $$ = $4; }
475 ;
476
477enumerator_list:
478 enumerator
479 | enumerator_list ',' enumerator
480
481enumerator:
482 IDENT
483 {
484 const char *name = strdup((*$1)->string);
485 add_symbol(name, SYM_ENUM_CONST, NULL, 0);
486 }
487 | IDENT '=' EXPRESSION_PHRASE
488 {
489 const char *name = strdup((*$1)->string);
490 struct string_list *expr = copy_list_range(*$3, *$2);
491 add_symbol(name, SYM_ENUM_CONST, expr, 0);
492 }
493
494asm_definition:
495 ASM_PHRASE ';' { $$ = $2; }
496 ;
497
498asm_phrase_opt:
499 /* empty */ { $$ = NULL; }
500 | ASM_PHRASE
501 ;
502
503export_definition:
504 EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'
505 { export_symbol((*$3)->string); $$ = $5; }
506 ;
507
508
509%%
510
511static void
512yyerror(const char *e)
513{
514 error_with_pos("%s", e);
515}
1/* C global declaration parser for genksyms.
2 Copyright 1996, 1997 Linux International.
3
4 New implementation contributed by Richard Henderson <rth@tamu.edu>
5 Based on original work by Bjorn Ekwall <bj0rn@blox.se>
6
7 This file is part of the Linux modutils.
8
9 This program is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2 of the License, or (at your
12 option) any later version.
13
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software Foundation,
21 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23
24%{
25
26#include <assert.h>
27#include <stdlib.h>
28#include <string.h>
29#include "genksyms.h"
30
31static int is_typedef;
32static int is_extern;
33static char *current_name;
34static struct string_list *decl_spec;
35
36static void yyerror(const char *);
37
38static inline void
39remove_node(struct string_list **p)
40{
41 struct string_list *node = *p;
42 *p = node->next;
43 free_node(node);
44}
45
46static inline void
47remove_list(struct string_list **pb, struct string_list **pe)
48{
49 struct string_list *b = *pb, *e = *pe;
50 *pb = e;
51 free_list(b, e);
52}
53
54/* Record definition of a struct/union/enum */
55static void record_compound(struct string_list **keyw,
56 struct string_list **ident,
57 struct string_list **body,
58 enum symbol_type type)
59{
60 struct string_list *b = *body, *i = *ident, *r;
61
62 if (i->in_source_file) {
63 remove_node(keyw);
64 (*ident)->tag = type;
65 remove_list(body, ident);
66 return;
67 }
68 r = copy_node(i); r->tag = type;
69 r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
70 add_symbol(i->string, type, b, is_extern);
71}
72
73%}
74
75%token ASM_KEYW
76%token ATTRIBUTE_KEYW
77%token AUTO_KEYW
78%token BOOL_KEYW
79%token CHAR_KEYW
80%token CONST_KEYW
81%token DOUBLE_KEYW
82%token ENUM_KEYW
83%token EXTERN_KEYW
84%token EXTENSION_KEYW
85%token FLOAT_KEYW
86%token INLINE_KEYW
87%token INT_KEYW
88%token LONG_KEYW
89%token REGISTER_KEYW
90%token RESTRICT_KEYW
91%token SHORT_KEYW
92%token SIGNED_KEYW
93%token STATIC_KEYW
94%token STRUCT_KEYW
95%token TYPEDEF_KEYW
96%token UNION_KEYW
97%token UNSIGNED_KEYW
98%token VOID_KEYW
99%token VOLATILE_KEYW
100%token TYPEOF_KEYW
101
102%token EXPORT_SYMBOL_KEYW
103
104%token ASM_PHRASE
105%token ATTRIBUTE_PHRASE
106%token BRACE_PHRASE
107%token BRACKET_PHRASE
108%token EXPRESSION_PHRASE
109
110%token CHAR
111%token DOTS
112%token IDENT
113%token INT
114%token REAL
115%token STRING
116%token TYPE
117%token OTHER
118%token FILENAME
119
120%%
121
122declaration_seq:
123 declaration
124 | declaration_seq declaration
125 ;
126
127declaration:
128 { is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
129 declaration1
130 { free_list(*$2, NULL); *$2 = NULL; }
131 ;
132
133declaration1:
134 EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
135 { $$ = $4; }
136 | TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
137 { $$ = $3; }
138 | simple_declaration
139 | function_definition
140 | asm_definition
141 | export_definition
142 | error ';' { $$ = $2; }
143 | error '}' { $$ = $2; }
144 ;
145
146simple_declaration:
147 decl_specifier_seq_opt init_declarator_list_opt ';'
148 { if (current_name) {
149 struct string_list *decl = (*$3)->next;
150 (*$3)->next = NULL;
151 add_symbol(current_name,
152 is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
153 decl, is_extern);
154 current_name = NULL;
155 }
156 $$ = $3;
157 }
158 ;
159
160init_declarator_list_opt:
161 /* empty */ { $$ = NULL; }
162 | init_declarator_list
163 ;
164
165init_declarator_list:
166 init_declarator
167 { struct string_list *decl = *$1;
168 *$1 = NULL;
169 add_symbol(current_name,
170 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
171 current_name = NULL;
172 $$ = $1;
173 }
174 | init_declarator_list ',' init_declarator
175 { struct string_list *decl = *$3;
176 *$3 = NULL;
177 free_list(*$2, NULL);
178 *$2 = decl_spec;
179 add_symbol(current_name,
180 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
181 current_name = NULL;
182 $$ = $3;
183 }
184 ;
185
186init_declarator:
187 declarator asm_phrase_opt attribute_opt initializer_opt
188 { $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
189 ;
190
191/* Hang on to the specifiers so that we can reuse them. */
192decl_specifier_seq_opt:
193 /* empty */ { decl_spec = NULL; }
194 | decl_specifier_seq
195 ;
196
197decl_specifier_seq:
198 decl_specifier { decl_spec = *$1; }
199 | decl_specifier_seq decl_specifier { decl_spec = *$2; }
200 ;
201
202decl_specifier:
203 storage_class_specifier
204 { /* Version 2 checksumming ignores storage class, as that
205 is really irrelevant to the linkage. */
206 remove_node($1);
207 $$ = $1;
208 }
209 | type_specifier
210 ;
211
212storage_class_specifier:
213 AUTO_KEYW
214 | REGISTER_KEYW
215 | STATIC_KEYW
216 | EXTERN_KEYW { is_extern = 1; $$ = $1; }
217 | INLINE_KEYW { is_extern = 0; $$ = $1; }
218 ;
219
220type_specifier:
221 simple_type_specifier
222 | cvar_qualifier
223 | TYPEOF_KEYW '(' decl_specifier_seq '*' ')'
224 | TYPEOF_KEYW '(' decl_specifier_seq ')'
225
226 /* References to s/u/e's defined elsewhere. Rearrange things
227 so that it is easier to expand the definition fully later. */
228 | STRUCT_KEYW IDENT
229 { remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
230 | UNION_KEYW IDENT
231 { remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
232 | ENUM_KEYW IDENT
233 { remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
234
235 /* Full definitions of an s/u/e. Record it. */
236 | STRUCT_KEYW IDENT class_body
237 { record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
238 | UNION_KEYW IDENT class_body
239 { record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
240 | ENUM_KEYW IDENT enum_body
241 { record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
242 /*
243 * Anonymous enum definition. Tell add_symbol() to restart its counter.
244 */
245 | ENUM_KEYW enum_body
246 { add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
247 /* Anonymous s/u definitions. Nothing needs doing. */
248 | STRUCT_KEYW class_body { $$ = $2; }
249 | UNION_KEYW class_body { $$ = $2; }
250 ;
251
252simple_type_specifier:
253 CHAR_KEYW
254 | SHORT_KEYW
255 | INT_KEYW
256 | LONG_KEYW
257 | SIGNED_KEYW
258 | UNSIGNED_KEYW
259 | FLOAT_KEYW
260 | DOUBLE_KEYW
261 | VOID_KEYW
262 | BOOL_KEYW
263 | TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
264 ;
265
266ptr_operator:
267 '*' cvar_qualifier_seq_opt
268 { $$ = $2 ? $2 : $1; }
269 ;
270
271cvar_qualifier_seq_opt:
272 /* empty */ { $$ = NULL; }
273 | cvar_qualifier_seq
274 ;
275
276cvar_qualifier_seq:
277 cvar_qualifier
278 | cvar_qualifier_seq cvar_qualifier { $$ = $2; }
279 ;
280
281cvar_qualifier:
282 CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
283 | RESTRICT_KEYW
284 { /* restrict has no effect in prototypes so ignore it */
285 remove_node($1);
286 $$ = $1;
287 }
288 ;
289
290declarator:
291 ptr_operator declarator { $$ = $2; }
292 | direct_declarator
293 ;
294
295direct_declarator:
296 IDENT
297 { if (current_name != NULL) {
298 error_with_pos("unexpected second declaration name");
299 YYERROR;
300 } else {
301 current_name = (*$1)->string;
302 $$ = $1;
303 }
304 }
305 | direct_declarator '(' parameter_declaration_clause ')'
306 { $$ = $4; }
307 | direct_declarator '(' error ')'
308 { $$ = $4; }
309 | direct_declarator BRACKET_PHRASE
310 { $$ = $2; }
311 | '(' declarator ')'
312 { $$ = $3; }
313 | '(' error ')'
314 { $$ = $3; }
315 ;
316
317/* Nested declarators differ from regular declarators in that they do
318 not record the symbols they find in the global symbol table. */
319nested_declarator:
320 ptr_operator nested_declarator { $$ = $2; }
321 | direct_nested_declarator
322 ;
323
324direct_nested_declarator:
325 IDENT
326 | TYPE
327 | direct_nested_declarator '(' parameter_declaration_clause ')'
328 { $$ = $4; }
329 | direct_nested_declarator '(' error ')'
330 { $$ = $4; }
331 | direct_nested_declarator BRACKET_PHRASE
332 { $$ = $2; }
333 | '(' nested_declarator ')'
334 { $$ = $3; }
335 | '(' error ')'
336 { $$ = $3; }
337 ;
338
339parameter_declaration_clause:
340 parameter_declaration_list_opt DOTS { $$ = $2; }
341 | parameter_declaration_list_opt
342 | parameter_declaration_list ',' DOTS { $$ = $3; }
343 ;
344
345parameter_declaration_list_opt:
346 /* empty */ { $$ = NULL; }
347 | parameter_declaration_list
348 ;
349
350parameter_declaration_list:
351 parameter_declaration
352 | parameter_declaration_list ',' parameter_declaration
353 { $$ = $3; }
354 ;
355
356parameter_declaration:
357 decl_specifier_seq m_abstract_declarator
358 { $$ = $2 ? $2 : $1; }
359 ;
360
361m_abstract_declarator:
362 ptr_operator m_abstract_declarator
363 { $$ = $2 ? $2 : $1; }
364 | direct_m_abstract_declarator
365 ;
366
367direct_m_abstract_declarator:
368 /* empty */ { $$ = NULL; }
369 | IDENT
370 { /* For version 2 checksums, we don't want to remember
371 private parameter names. */
372 remove_node($1);
373 $$ = $1;
374 }
375 /* This wasn't really a typedef name but an identifier that
376 shadows one. */
377 | TYPE
378 { remove_node($1);
379 $$ = $1;
380 }
381 | direct_m_abstract_declarator '(' parameter_declaration_clause ')'
382 { $$ = $4; }
383 | direct_m_abstract_declarator '(' error ')'
384 { $$ = $4; }
385 | direct_m_abstract_declarator BRACKET_PHRASE
386 { $$ = $2; }
387 | '(' m_abstract_declarator ')'
388 { $$ = $3; }
389 | '(' error ')'
390 { $$ = $3; }
391 ;
392
393function_definition:
394 decl_specifier_seq_opt declarator BRACE_PHRASE
395 { struct string_list *decl = *$2;
396 *$2 = NULL;
397 add_symbol(current_name, SYM_NORMAL, decl, is_extern);
398 $$ = $3;
399 }
400 ;
401
402initializer_opt:
403 /* empty */ { $$ = NULL; }
404 | initializer
405 ;
406
407/* We never care about the contents of an initializer. */
408initializer:
409 '=' EXPRESSION_PHRASE
410 { remove_list($2, &(*$1)->next); $$ = $2; }
411 ;
412
413class_body:
414 '{' member_specification_opt '}' { $$ = $3; }
415 | '{' error '}' { $$ = $3; }
416 ;
417
418member_specification_opt:
419 /* empty */ { $$ = NULL; }
420 | member_specification
421 ;
422
423member_specification:
424 member_declaration
425 | member_specification member_declaration { $$ = $2; }
426 ;
427
428member_declaration:
429 decl_specifier_seq_opt member_declarator_list_opt ';'
430 { $$ = $3; }
431 | error ';'
432 { $$ = $2; }
433 ;
434
435member_declarator_list_opt:
436 /* empty */ { $$ = NULL; }
437 | member_declarator_list
438 ;
439
440member_declarator_list:
441 member_declarator
442 | member_declarator_list ',' member_declarator { $$ = $3; }
443 ;
444
445member_declarator:
446 nested_declarator attribute_opt { $$ = $2 ? $2 : $1; }
447 | IDENT member_bitfield_declarator { $$ = $2; }
448 | member_bitfield_declarator
449 ;
450
451member_bitfield_declarator:
452 ':' EXPRESSION_PHRASE { $$ = $2; }
453 ;
454
455attribute_opt:
456 /* empty */ { $$ = NULL; }
457 | attribute_opt ATTRIBUTE_PHRASE
458 ;
459
460enum_body:
461 '{' enumerator_list '}' { $$ = $3; }
462 | '{' enumerator_list ',' '}' { $$ = $4; }
463 ;
464
465enumerator_list:
466 enumerator
467 | enumerator_list ',' enumerator
468
469enumerator:
470 IDENT
471 {
472 const char *name = strdup((*$1)->string);
473 add_symbol(name, SYM_ENUM_CONST, NULL, 0);
474 }
475 | IDENT '=' EXPRESSION_PHRASE
476 {
477 const char *name = strdup((*$1)->string);
478 struct string_list *expr = copy_list_range(*$3, *$2);
479 add_symbol(name, SYM_ENUM_CONST, expr, 0);
480 }
481
482asm_definition:
483 ASM_PHRASE ';' { $$ = $2; }
484 ;
485
486asm_phrase_opt:
487 /* empty */ { $$ = NULL; }
488 | ASM_PHRASE
489 ;
490
491export_definition:
492 EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'
493 { export_symbol((*$3)->string); $$ = $5; }
494 ;
495
496
497%%
498
499static void
500yyerror(const char *e)
501{
502 error_with_pos("%s", e);
503}