Loading...
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * C global declaration parser for genksyms.
4 * Copyright 1996, 1997 Linux International.
5 *
6 * New implementation contributed by Richard Henderson <rth@tamu.edu>
7 * Based on original work by Bjorn Ekwall <bj0rn@blox.se>
8 *
9 * This file is part of the Linux modutils.
10 */
11
12%{
13
14#include <assert.h>
15#include <stdlib.h>
16#include <string.h>
17#include "genksyms.h"
18
19static int is_typedef;
20static int is_extern;
21static char *current_name;
22static struct string_list *decl_spec;
23
24static void yyerror(const char *);
25
26static inline void
27remove_node(struct string_list **p)
28{
29 struct string_list *node = *p;
30 *p = node->next;
31 free_node(node);
32}
33
34static inline void
35remove_list(struct string_list **pb, struct string_list **pe)
36{
37 struct string_list *b = *pb, *e = *pe;
38 *pb = e;
39 free_list(b, e);
40}
41
42/* Record definition of a struct/union/enum */
43static void record_compound(struct string_list **keyw,
44 struct string_list **ident,
45 struct string_list **body,
46 enum symbol_type type)
47{
48 struct string_list *b = *body, *i = *ident, *r;
49
50 if (i->in_source_file) {
51 remove_node(keyw);
52 (*ident)->tag = type;
53 remove_list(body, ident);
54 return;
55 }
56 r = copy_node(i); r->tag = type;
57 r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
58 add_symbol(i->string, type, b, is_extern);
59}
60
61%}
62
63%token ASM_KEYW
64%token ATTRIBUTE_KEYW
65%token AUTO_KEYW
66%token BOOL_KEYW
67%token BUILTIN_INT_KEYW
68%token CHAR_KEYW
69%token CONST_KEYW
70%token DOUBLE_KEYW
71%token ENUM_KEYW
72%token EXTERN_KEYW
73%token EXTENSION_KEYW
74%token FLOAT_KEYW
75%token INLINE_KEYW
76%token INT_KEYW
77%token LONG_KEYW
78%token REGISTER_KEYW
79%token RESTRICT_KEYW
80%token SHORT_KEYW
81%token SIGNED_KEYW
82%token STATIC_KEYW
83%token STRUCT_KEYW
84%token TYPEDEF_KEYW
85%token UNION_KEYW
86%token UNSIGNED_KEYW
87%token VOID_KEYW
88%token VOLATILE_KEYW
89%token TYPEOF_KEYW
90%token VA_LIST_KEYW
91
92%token EXPORT_SYMBOL_KEYW
93
94%token ASM_PHRASE
95%token ATTRIBUTE_PHRASE
96%token TYPEOF_PHRASE
97%token BRACE_PHRASE
98%token BRACKET_PHRASE
99%token EXPRESSION_PHRASE
100
101%token CHAR
102%token DOTS
103%token IDENT
104%token INT
105%token REAL
106%token STRING
107%token TYPE
108%token OTHER
109%token FILENAME
110
111%%
112
113declaration_seq:
114 declaration
115 | declaration_seq declaration
116 ;
117
118declaration:
119 { is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
120 declaration1
121 { free_list(*$2, NULL); *$2 = NULL; }
122 ;
123
124declaration1:
125 EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
126 { $$ = $4; }
127 | TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
128 { $$ = $3; }
129 | simple_declaration
130 | function_definition
131 | asm_definition
132 | export_definition
133 | error ';' { $$ = $2; }
134 | error '}' { $$ = $2; }
135 ;
136
137simple_declaration:
138 decl_specifier_seq_opt init_declarator_list_opt ';'
139 { if (current_name) {
140 struct string_list *decl = (*$3)->next;
141 (*$3)->next = NULL;
142 add_symbol(current_name,
143 is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
144 decl, is_extern);
145 current_name = NULL;
146 }
147 $$ = $3;
148 }
149 ;
150
151init_declarator_list_opt:
152 /* empty */ { $$ = NULL; }
153 | init_declarator_list
154 ;
155
156init_declarator_list:
157 init_declarator
158 { struct string_list *decl = *$1;
159 *$1 = NULL;
160 add_symbol(current_name,
161 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
162 current_name = NULL;
163 $$ = $1;
164 }
165 | init_declarator_list ',' init_declarator
166 { struct string_list *decl = *$3;
167 *$3 = NULL;
168 free_list(*$2, NULL);
169 *$2 = decl_spec;
170 add_symbol(current_name,
171 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
172 current_name = NULL;
173 $$ = $3;
174 }
175 ;
176
177init_declarator:
178 declarator asm_phrase_opt attribute_opt initializer_opt
179 { $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
180 ;
181
182/* Hang on to the specifiers so that we can reuse them. */
183decl_specifier_seq_opt:
184 /* empty */ { decl_spec = NULL; }
185 | decl_specifier_seq
186 ;
187
188decl_specifier_seq:
189 decl_specifier { decl_spec = *$1; }
190 | decl_specifier_seq decl_specifier { decl_spec = *$2; }
191 ;
192
193decl_specifier:
194 storage_class_specifier
195 { /* Version 2 checksumming ignores storage class, as that
196 is really irrelevant to the linkage. */
197 remove_node($1);
198 $$ = $1;
199 }
200 | type_specifier
201 ;
202
203storage_class_specifier:
204 AUTO_KEYW
205 | REGISTER_KEYW
206 | STATIC_KEYW
207 | EXTERN_KEYW { is_extern = 1; $$ = $1; }
208 | INLINE_KEYW { is_extern = 0; $$ = $1; }
209 ;
210
211type_specifier:
212 simple_type_specifier
213 | cvar_qualifier
214 | TYPEOF_KEYW '(' parameter_declaration ')'
215 | TYPEOF_PHRASE
216
217 /* References to s/u/e's defined elsewhere. Rearrange things
218 so that it is easier to expand the definition fully later. */
219 | STRUCT_KEYW IDENT
220 { remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
221 | UNION_KEYW IDENT
222 { remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
223 | ENUM_KEYW IDENT
224 { remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
225
226 /* Full definitions of an s/u/e. Record it. */
227 | STRUCT_KEYW IDENT class_body
228 { record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
229 | UNION_KEYW IDENT class_body
230 { record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
231 | ENUM_KEYW IDENT enum_body
232 { record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
233 /*
234 * Anonymous enum definition. Tell add_symbol() to restart its counter.
235 */
236 | ENUM_KEYW enum_body
237 { add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
238 /* Anonymous s/u definitions. Nothing needs doing. */
239 | STRUCT_KEYW class_body { $$ = $2; }
240 | UNION_KEYW class_body { $$ = $2; }
241 ;
242
243simple_type_specifier:
244 CHAR_KEYW
245 | SHORT_KEYW
246 | INT_KEYW
247 | LONG_KEYW
248 | SIGNED_KEYW
249 | UNSIGNED_KEYW
250 | FLOAT_KEYW
251 | DOUBLE_KEYW
252 | VOID_KEYW
253 | BOOL_KEYW
254 | VA_LIST_KEYW
255 | BUILTIN_INT_KEYW
256 | TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
257 ;
258
259ptr_operator:
260 '*' cvar_qualifier_seq_opt
261 { $$ = $2 ? $2 : $1; }
262 ;
263
264cvar_qualifier_seq_opt:
265 /* empty */ { $$ = NULL; }
266 | cvar_qualifier_seq
267 ;
268
269cvar_qualifier_seq:
270 cvar_qualifier
271 | cvar_qualifier_seq cvar_qualifier { $$ = $2; }
272 ;
273
274cvar_qualifier:
275 CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
276 | RESTRICT_KEYW
277 { /* restrict has no effect in prototypes so ignore it */
278 remove_node($1);
279 $$ = $1;
280 }
281 ;
282
283declarator:
284 ptr_operator declarator { $$ = $2; }
285 | direct_declarator
286 ;
287
288direct_declarator:
289 IDENT
290 { if (current_name != NULL) {
291 error_with_pos("unexpected second declaration name");
292 YYERROR;
293 } else {
294 current_name = (*$1)->string;
295 $$ = $1;
296 }
297 }
298 | TYPE
299 { if (current_name != NULL) {
300 error_with_pos("unexpected second declaration name");
301 YYERROR;
302 } else {
303 current_name = (*$1)->string;
304 $$ = $1;
305 }
306 }
307 | direct_declarator '(' parameter_declaration_clause ')'
308 { $$ = $4; }
309 | direct_declarator '(' error ')'
310 { $$ = $4; }
311 | direct_declarator BRACKET_PHRASE
312 { $$ = $2; }
313 | '(' declarator ')'
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}
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * C global declaration parser for genksyms.
4 * Copyright 1996, 1997 Linux International.
5 *
6 * New implementation contributed by Richard Henderson <rth@tamu.edu>
7 * Based on original work by Bjorn Ekwall <bj0rn@blox.se>
8 *
9 * This file is part of the Linux modutils.
10 */
11
12%{
13
14#include <assert.h>
15#include <stdlib.h>
16#include <string.h>
17#include "genksyms.h"
18
19static int is_typedef;
20static int is_extern;
21static char *current_name;
22static struct string_list *decl_spec;
23
24static void yyerror(const char *);
25
26static inline void
27remove_node(struct string_list **p)
28{
29 struct string_list *node = *p;
30 *p = node->next;
31 free_node(node);
32}
33
34static inline void
35remove_list(struct string_list **pb, struct string_list **pe)
36{
37 struct string_list *b = *pb, *e = *pe;
38 *pb = e;
39 free_list(b, e);
40}
41
42/* Record definition of a struct/union/enum */
43static void record_compound(struct string_list **keyw,
44 struct string_list **ident,
45 struct string_list **body,
46 enum symbol_type type)
47{
48 struct string_list *b = *body, *i = *ident, *r;
49
50 if (i->in_source_file) {
51 remove_node(keyw);
52 (*ident)->tag = type;
53 remove_list(body, ident);
54 return;
55 }
56 r = copy_node(i); r->tag = type;
57 r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
58 add_symbol(i->string, type, b, is_extern);
59}
60
61%}
62
63%token ASM_KEYW
64%token ATTRIBUTE_KEYW
65%token AUTO_KEYW
66%token BOOL_KEYW
67%token BUILTIN_INT_KEYW
68%token CHAR_KEYW
69%token CONST_KEYW
70%token DOUBLE_KEYW
71%token ENUM_KEYW
72%token EXTERN_KEYW
73%token EXTENSION_KEYW
74%token FLOAT_KEYW
75%token INLINE_KEYW
76%token INT_KEYW
77%token LONG_KEYW
78%token REGISTER_KEYW
79%token RESTRICT_KEYW
80%token SHORT_KEYW
81%token SIGNED_KEYW
82%token STATIC_KEYW
83%token STATIC_ASSERT_KEYW
84%token STRUCT_KEYW
85%token TYPEDEF_KEYW
86%token UNION_KEYW
87%token UNSIGNED_KEYW
88%token VOID_KEYW
89%token VOLATILE_KEYW
90%token TYPEOF_KEYW
91%token VA_LIST_KEYW
92
93%token EXPORT_SYMBOL_KEYW
94
95%token ASM_PHRASE
96%token ATTRIBUTE_PHRASE
97%token TYPEOF_PHRASE
98%token BRACE_PHRASE
99%token BRACKET_PHRASE
100%token EXPRESSION_PHRASE
101%token STATIC_ASSERT_PHRASE
102
103%token CHAR
104%token DOTS
105%token IDENT
106%token INT
107%token REAL
108%token STRING
109%token TYPE
110%token OTHER
111%token FILENAME
112
113%%
114
115declaration_seq:
116 declaration
117 | declaration_seq declaration
118 ;
119
120declaration:
121 { is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
122 declaration1
123 { free_list(*$2, NULL); *$2 = NULL; }
124 ;
125
126declaration1:
127 EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
128 { $$ = $4; }
129 | TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
130 { $$ = $3; }
131 | simple_declaration
132 | function_definition
133 | asm_definition
134 | export_definition
135 | static_assert
136 | error ';' { $$ = $2; }
137 | error '}' { $$ = $2; }
138 ;
139
140simple_declaration:
141 decl_specifier_seq_opt init_declarator_list_opt ';'
142 { if (current_name) {
143 struct string_list *decl = (*$3)->next;
144 (*$3)->next = NULL;
145 add_symbol(current_name,
146 is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
147 decl, is_extern);
148 current_name = NULL;
149 }
150 $$ = $3;
151 }
152 ;
153
154init_declarator_list_opt:
155 /* empty */ { $$ = NULL; }
156 | init_declarator_list
157 ;
158
159init_declarator_list:
160 init_declarator
161 { struct string_list *decl = *$1;
162 *$1 = NULL;
163 add_symbol(current_name,
164 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
165 current_name = NULL;
166 $$ = $1;
167 }
168 | init_declarator_list ',' init_declarator
169 { struct string_list *decl = *$3;
170 *$3 = NULL;
171 free_list(*$2, NULL);
172 *$2 = decl_spec;
173 add_symbol(current_name,
174 is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
175 current_name = NULL;
176 $$ = $3;
177 }
178 ;
179
180init_declarator:
181 declarator asm_phrase_opt attribute_opt initializer_opt
182 { $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
183 ;
184
185/* Hang on to the specifiers so that we can reuse them. */
186decl_specifier_seq_opt:
187 /* empty */ { decl_spec = NULL; }
188 | decl_specifier_seq
189 ;
190
191decl_specifier_seq:
192 decl_specifier { decl_spec = *$1; }
193 | decl_specifier_seq decl_specifier { decl_spec = *$2; }
194 ;
195
196decl_specifier:
197 storage_class_specifier
198 { /* Version 2 checksumming ignores storage class, as that
199 is really irrelevant to the linkage. */
200 remove_node($1);
201 $$ = $1;
202 }
203 | type_specifier
204 ;
205
206storage_class_specifier:
207 AUTO_KEYW
208 | REGISTER_KEYW
209 | STATIC_KEYW
210 | EXTERN_KEYW { is_extern = 1; $$ = $1; }
211 | INLINE_KEYW { is_extern = 0; $$ = $1; }
212 ;
213
214type_specifier:
215 simple_type_specifier
216 | cvar_qualifier
217 | TYPEOF_KEYW '(' parameter_declaration ')'
218 | TYPEOF_PHRASE
219
220 /* References to s/u/e's defined elsewhere. Rearrange things
221 so that it is easier to expand the definition fully later. */
222 | STRUCT_KEYW IDENT
223 { remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
224 | UNION_KEYW IDENT
225 { remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
226 | ENUM_KEYW IDENT
227 { remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
228
229 /* Full definitions of an s/u/e. Record it. */
230 | STRUCT_KEYW IDENT class_body
231 { record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
232 | UNION_KEYW IDENT class_body
233 { record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
234 | ENUM_KEYW IDENT enum_body
235 { record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
236 /*
237 * Anonymous enum definition. Tell add_symbol() to restart its counter.
238 */
239 | ENUM_KEYW enum_body
240 { add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
241 /* Anonymous s/u definitions. Nothing needs doing. */
242 | STRUCT_KEYW class_body { $$ = $2; }
243 | UNION_KEYW class_body { $$ = $2; }
244 ;
245
246simple_type_specifier:
247 CHAR_KEYW
248 | SHORT_KEYW
249 | INT_KEYW
250 | LONG_KEYW
251 | SIGNED_KEYW
252 | UNSIGNED_KEYW
253 | FLOAT_KEYW
254 | DOUBLE_KEYW
255 | VOID_KEYW
256 | BOOL_KEYW
257 | VA_LIST_KEYW
258 | BUILTIN_INT_KEYW
259 | TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
260 ;
261
262ptr_operator:
263 '*' cvar_qualifier_seq_opt
264 { $$ = $2 ? $2 : $1; }
265 ;
266
267cvar_qualifier_seq_opt:
268 /* empty */ { $$ = NULL; }
269 | cvar_qualifier_seq
270 ;
271
272cvar_qualifier_seq:
273 cvar_qualifier
274 | cvar_qualifier_seq cvar_qualifier { $$ = $2; }
275 ;
276
277cvar_qualifier:
278 CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
279 | RESTRICT_KEYW
280 { /* restrict has no effect in prototypes so ignore it */
281 remove_node($1);
282 $$ = $1;
283 }
284 ;
285
286declarator:
287 ptr_operator declarator { $$ = $2; }
288 | direct_declarator
289 ;
290
291direct_declarator:
292 IDENT
293 { if (current_name != NULL) {
294 error_with_pos("unexpected second declaration name");
295 YYERROR;
296 } else {
297 current_name = (*$1)->string;
298 $$ = $1;
299 }
300 }
301 | TYPE
302 { if (current_name != NULL) {
303 error_with_pos("unexpected second declaration name");
304 YYERROR;
305 } else {
306 current_name = (*$1)->string;
307 $$ = $1;
308 }
309 }
310 | direct_declarator '(' parameter_declaration_clause ')'
311 { $$ = $4; }
312 | direct_declarator '(' error ')'
313 { $$ = $4; }
314 | direct_declarator BRACKET_PHRASE
315 { $$ = $2; }
316 | '(' declarator ')'
317 { $$ = $3; }
318 ;
319
320/* Nested declarators differ from regular declarators in that they do
321 not record the symbols they find in the global symbol table. */
322nested_declarator:
323 ptr_operator nested_declarator { $$ = $2; }
324 | direct_nested_declarator
325 ;
326
327direct_nested_declarator:
328 IDENT
329 | TYPE
330 | direct_nested_declarator '(' parameter_declaration_clause ')'
331 { $$ = $4; }
332 | direct_nested_declarator '(' error ')'
333 { $$ = $4; }
334 | direct_nested_declarator BRACKET_PHRASE
335 { $$ = $2; }
336 | '(' nested_declarator ')'
337 { $$ = $3; }
338 | '(' error ')'
339 { $$ = $3; }
340 ;
341
342parameter_declaration_clause:
343 parameter_declaration_list_opt DOTS { $$ = $2; }
344 | parameter_declaration_list_opt
345 | parameter_declaration_list ',' DOTS { $$ = $3; }
346 ;
347
348parameter_declaration_list_opt:
349 /* empty */ { $$ = NULL; }
350 | parameter_declaration_list
351 ;
352
353parameter_declaration_list:
354 parameter_declaration
355 | parameter_declaration_list ',' parameter_declaration
356 { $$ = $3; }
357 ;
358
359parameter_declaration:
360 decl_specifier_seq m_abstract_declarator
361 { $$ = $2 ? $2 : $1; }
362 ;
363
364m_abstract_declarator:
365 ptr_operator m_abstract_declarator
366 { $$ = $2 ? $2 : $1; }
367 | direct_m_abstract_declarator
368 ;
369
370direct_m_abstract_declarator:
371 /* empty */ { $$ = NULL; }
372 | IDENT
373 { /* For version 2 checksums, we don't want to remember
374 private parameter names. */
375 remove_node($1);
376 $$ = $1;
377 }
378 /* This wasn't really a typedef name but an identifier that
379 shadows one. */
380 | TYPE
381 { remove_node($1);
382 $$ = $1;
383 }
384 | direct_m_abstract_declarator '(' parameter_declaration_clause ')'
385 { $$ = $4; }
386 | direct_m_abstract_declarator '(' error ')'
387 { $$ = $4; }
388 | direct_m_abstract_declarator BRACKET_PHRASE
389 { $$ = $2; }
390 | '(' m_abstract_declarator ')'
391 { $$ = $3; }
392 | '(' error ')'
393 { $$ = $3; }
394 ;
395
396function_definition:
397 decl_specifier_seq_opt declarator BRACE_PHRASE
398 { struct string_list *decl = *$2;
399 *$2 = NULL;
400 add_symbol(current_name, SYM_NORMAL, decl, is_extern);
401 $$ = $3;
402 }
403 ;
404
405initializer_opt:
406 /* empty */ { $$ = NULL; }
407 | initializer
408 ;
409
410/* We never care about the contents of an initializer. */
411initializer:
412 '=' EXPRESSION_PHRASE
413 { remove_list($2, &(*$1)->next); $$ = $2; }
414 ;
415
416class_body:
417 '{' member_specification_opt '}' { $$ = $3; }
418 | '{' error '}' { $$ = $3; }
419 ;
420
421member_specification_opt:
422 /* empty */ { $$ = NULL; }
423 | member_specification
424 ;
425
426member_specification:
427 member_declaration
428 | member_specification member_declaration { $$ = $2; }
429 ;
430
431member_declaration:
432 decl_specifier_seq_opt member_declarator_list_opt ';'
433 { $$ = $3; }
434 | error ';'
435 { $$ = $2; }
436 ;
437
438member_declarator_list_opt:
439 /* empty */ { $$ = NULL; }
440 | member_declarator_list
441 ;
442
443member_declarator_list:
444 member_declarator
445 | member_declarator_list ',' member_declarator { $$ = $3; }
446 ;
447
448member_declarator:
449 nested_declarator attribute_opt { $$ = $2 ? $2 : $1; }
450 | IDENT member_bitfield_declarator { $$ = $2; }
451 | member_bitfield_declarator
452 ;
453
454member_bitfield_declarator:
455 ':' EXPRESSION_PHRASE { $$ = $2; }
456 ;
457
458attribute_opt:
459 /* empty */ { $$ = NULL; }
460 | attribute_opt ATTRIBUTE_PHRASE
461 ;
462
463enum_body:
464 '{' enumerator_list '}' { $$ = $3; }
465 | '{' enumerator_list ',' '}' { $$ = $4; }
466 ;
467
468enumerator_list:
469 enumerator
470 | enumerator_list ',' enumerator
471
472enumerator:
473 IDENT
474 {
475 const char *name = strdup((*$1)->string);
476 add_symbol(name, SYM_ENUM_CONST, NULL, 0);
477 }
478 | IDENT '=' EXPRESSION_PHRASE
479 {
480 const char *name = strdup((*$1)->string);
481 struct string_list *expr = copy_list_range(*$3, *$2);
482 add_symbol(name, SYM_ENUM_CONST, expr, 0);
483 }
484
485asm_definition:
486 ASM_PHRASE ';' { $$ = $2; }
487 ;
488
489asm_phrase_opt:
490 /* empty */ { $$ = NULL; }
491 | ASM_PHRASE
492 ;
493
494export_definition:
495 EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'
496 { export_symbol((*$3)->string); $$ = $5; }
497 ;
498
499/* Ignore any module scoped _Static_assert(...) */
500static_assert:
501 STATIC_ASSERT_PHRASE ';' { $$ = $2; }
502 ;
503
504%%
505
506static void
507yyerror(const char *e)
508{
509 error_with_pos("%s", e);
510}