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4
5
6#ifndef EXPR_H
7#define EXPR_H
8
9#ifdef __cplusplus
10extern "C" {
11#endif
12
13#include <assert.h>
14#include <stdio.h>
15#include "list.h"
16#ifndef __cplusplus
17#include <stdbool.h>
18#endif
19
20struct file {
21 struct file *next;
22 struct file *parent;
23 const char *name;
24 int lineno;
25};
26
27typedef enum tristate {
28 no, mod, yes
29} tristate;
30
31enum expr_type {
32 E_NONE, E_OR, E_AND, E_NOT,
33 E_EQUAL, E_UNEQUAL, E_LTH, E_LEQ, E_GTH, E_GEQ,
34 E_LIST, E_SYMBOL, E_RANGE
35};
36
37union expr_data {
38 struct expr *expr;
39 struct symbol *sym;
40};
41
42struct expr {
43 enum expr_type type;
44 union expr_data left, right;
45};
46
47#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
48#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
49#define EXPR_NOT(dep) (2-(dep))
50
51#define expr_list_for_each_sym(l, e, s) \
52 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
53
54struct expr_value {
55 struct expr *expr;
56 tristate tri;
57};
58
59struct symbol_value {
60 void *val;
61 tristate tri;
62};
63
64enum symbol_type {
65 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
66};
67
68
69enum {
70 S_DEF_USER,
71 S_DEF_AUTO,
72 S_DEF_DEF3,
73 S_DEF_DEF4,
74 S_DEF_COUNT
75};
76
77
78
79
80
81
82
83struct symbol {
84
85 struct symbol *next;
86
87
88 char *name;
89
90
91 enum symbol_type type;
92
93
94
95
96
97
98 struct symbol_value curr;
99
100
101
102
103
104 struct symbol_value def[S_DEF_COUNT];
105
106
107
108
109
110
111
112
113
114 tristate visible;
115
116
117 int flags;
118
119
120 struct property *prop;
121
122
123 struct expr_value dir_dep;
124
125
126 struct expr_value rev_dep;
127
128
129
130
131 struct expr_value implied;
132};
133
134#define for_all_symbols(i, sym) for (i = 0; i < SYMBOL_HASHSIZE; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
135
136#define SYMBOL_CONST 0x0001
137#define SYMBOL_CHECK 0x0008
138#define SYMBOL_CHOICE 0x0010
139#define SYMBOL_CHOICEVAL 0x0020
140#define SYMBOL_VALID 0x0080
141#define SYMBOL_OPTIONAL 0x0100
142#define SYMBOL_WRITE 0x0200
143#define SYMBOL_CHANGED 0x0400
144#define SYMBOL_AUTO 0x1000
145#define SYMBOL_CHECKED 0x2000
146#define SYMBOL_WARNED 0x8000
147
148
149#define SYMBOL_DEF 0x10000
150#define SYMBOL_DEF_USER 0x10000
151#define SYMBOL_DEF_AUTO 0x20000
152#define SYMBOL_DEF3 0x40000
153#define SYMBOL_DEF4 0x80000
154
155
156#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
157
158
159#define SYMBOL_ALLNOCONFIG_Y 0x200000
160
161#define SYMBOL_MAXLENGTH 256
162#define SYMBOL_HASHSIZE 9973
163
164
165
166
167
168
169
170
171
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175
176
177
178enum prop_type {
179 P_UNKNOWN,
180 P_PROMPT,
181 P_COMMENT,
182 P_MENU,
183 P_DEFAULT,
184 P_CHOICE,
185 P_SELECT,
186 P_IMPLY,
187 P_RANGE,
188 P_ENV,
189 P_SYMBOL,
190};
191
192struct property {
193 struct property *next;
194 struct symbol *sym;
195 enum prop_type type;
196 const char *text;
197 struct expr_value visible;
198 struct expr *expr;
199 struct menu *menu;
200
201
202 struct file *file;
203 int lineno;
204};
205
206#define for_all_properties(sym, st, tok) \
207 for (st = sym->prop; st; st = st->next) \
208 if (st->type == (tok))
209#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
210#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
211#define for_all_prompts(sym, st) \
212 for (st = sym->prop; st; st = st->next) \
213 if (st->text)
214
215
216
217
218
219
220
221struct menu {
222
223 struct menu *next;
224
225
226 struct menu *parent;
227
228
229 struct menu *list;
230
231
232
233
234
235 struct symbol *sym;
236
237
238
239
240
241
242 struct property *prompt;
243
244
245
246
247
248 struct expr *visibility;
249
250
251
252
253
254 struct expr *dep;
255
256
257 unsigned int flags;
258
259
260 char *help;
261
262
263 struct file *file;
264 int lineno;
265
266
267 void *data;
268};
269
270
271
272
273
274#define MENU_CHANGED 0x0001
275
276#define MENU_ROOT 0x0002
277
278struct jump_key {
279 struct list_head entries;
280 size_t offset;
281 struct menu *target;
282 int index;
283};
284
285#define JUMP_NB 9
286
287extern struct file *file_list;
288extern struct file *current_file;
289struct file *lookup_file(const char *name);
290
291extern struct symbol symbol_yes, symbol_no, symbol_mod;
292extern struct symbol *modules_sym;
293extern struct symbol *sym_defconfig_list;
294extern int cdebug;
295struct expr *expr_alloc_symbol(struct symbol *sym);
296struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
297struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
298struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
299struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
300struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
301struct expr *expr_copy(const struct expr *org);
302void expr_free(struct expr *e);
303void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
304tristate expr_calc_value(struct expr *e);
305struct expr *expr_trans_bool(struct expr *e);
306struct expr *expr_eliminate_dups(struct expr *e);
307struct expr *expr_transform(struct expr *e);
308int expr_contains_symbol(struct expr *dep, struct symbol *sym);
309bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
310struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
311
312void expr_fprint(struct expr *e, FILE *out);
313struct gstr;
314void expr_gstr_print(struct expr *e, struct gstr *gs);
315void expr_gstr_print_revdep(struct expr *e, struct gstr *gs,
316 tristate pr_type, const char *title);
317
318static inline int expr_is_yes(struct expr *e)
319{
320 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
321}
322
323static inline int expr_is_no(struct expr *e)
324{
325 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
326}
327
328#ifdef __cplusplus
329}
330#endif
331
332#endif
333