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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, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
33};
34
35union expr_data {
36 struct expr *expr;
37 struct symbol *sym;
38};
39
40struct expr {
41 enum expr_type type;
42 union expr_data left, right;
43};
44
45#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
46#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
47#define EXPR_NOT(dep) (2-(dep))
48
49#define expr_list_for_each_sym(l, e, s) \
50 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
51
52struct expr_value {
53 struct expr *expr;
54 tristate tri;
55};
56
57struct symbol_value {
58 void *val;
59 tristate tri;
60};
61
62enum symbol_type {
63 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
64};
65
66
67enum {
68 S_DEF_USER,
69 S_DEF_AUTO,
70 S_DEF_DEF3,
71 S_DEF_DEF4,
72 S_DEF_COUNT
73};
74
75struct symbol {
76 struct symbol *next;
77 char *name;
78 enum symbol_type type;
79 struct symbol_value curr;
80 struct symbol_value def[S_DEF_COUNT];
81 tristate visible;
82 int flags;
83 struct property *prop;
84 struct expr_value dir_dep;
85 struct expr_value rev_dep;
86};
87
88#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)
89
90#define SYMBOL_CONST 0x0001
91#define SYMBOL_CHECK 0x0008
92#define SYMBOL_CHOICE 0x0010
93#define SYMBOL_CHOICEVAL 0x0020
94#define SYMBOL_VALID 0x0080
95#define SYMBOL_OPTIONAL 0x0100
96#define SYMBOL_WRITE 0x0200
97#define SYMBOL_CHANGED 0x0400
98#define SYMBOL_AUTO 0x1000
99#define SYMBOL_CHECKED 0x2000
100#define SYMBOL_WARNED 0x8000
101
102
103#define SYMBOL_DEF 0x10000
104#define SYMBOL_DEF_USER 0x10000
105#define SYMBOL_DEF_AUTO 0x20000
106#define SYMBOL_DEF3 0x40000
107#define SYMBOL_DEF4 0x80000
108
109
110#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
111
112#define SYMBOL_MAXLENGTH 256
113#define SYMBOL_HASHSIZE 9973
114
115
116
117
118
119
120
121
122
123
124
125
126enum prop_type {
127 P_UNKNOWN,
128 P_PROMPT,
129 P_COMMENT,
130 P_MENU,
131 P_DEFAULT,
132 P_CHOICE,
133 P_SELECT,
134 P_RANGE,
135 P_ENV,
136 P_SYMBOL,
137};
138
139struct property {
140 struct property *next;
141 struct symbol *sym;
142 enum prop_type type;
143 const char *text;
144 struct expr_value visible;
145 struct expr *expr;
146 struct menu *menu;
147
148
149 struct file *file;
150 int lineno;
151};
152
153#define for_all_properties(sym, st, tok) \
154 for (st = sym->prop; st; st = st->next) \
155 if (st->type == (tok))
156#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
157#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
158#define for_all_prompts(sym, st) \
159 for (st = sym->prop; st; st = st->next) \
160 if (st->text)
161
162struct menu {
163 struct menu *next;
164 struct menu *parent;
165 struct menu *list;
166 struct symbol *sym;
167 struct property *prompt;
168 struct expr *visibility;
169 struct expr *dep;
170 unsigned int flags;
171 char *help;
172 struct file *file;
173 int lineno;
174 void *data;
175};
176
177#define MENU_CHANGED 0x0001
178#define MENU_ROOT 0x0002
179
180struct jump_key {
181 struct list_head entries;
182 size_t offset;
183 struct menu *target;
184 int index;
185};
186
187#define JUMP_NB 9
188
189extern struct file *file_list;
190extern struct file *current_file;
191struct file *lookup_file(const char *name);
192
193extern struct symbol symbol_yes, symbol_no, symbol_mod;
194extern struct symbol *modules_sym;
195extern struct symbol *sym_defconfig_list;
196extern int cdebug;
197struct expr *expr_alloc_symbol(struct symbol *sym);
198struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
199struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
200struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
201struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
202struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
203struct expr *expr_copy(const struct expr *org);
204void expr_free(struct expr *e);
205int expr_eq(struct expr *e1, struct expr *e2);
206void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
207tristate expr_calc_value(struct expr *e);
208struct expr *expr_eliminate_yn(struct expr *e);
209struct expr *expr_trans_bool(struct expr *e);
210struct expr *expr_eliminate_dups(struct expr *e);
211struct expr *expr_transform(struct expr *e);
212int expr_contains_symbol(struct expr *dep, struct symbol *sym);
213bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
214struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
215struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
216void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
217struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
218struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
219
220void expr_fprint(struct expr *e, FILE *out);
221struct gstr;
222void expr_gstr_print(struct expr *e, struct gstr *gs);
223
224static inline int expr_is_yes(struct expr *e)
225{
226 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
227}
228
229static inline int expr_is_no(struct expr *e)
230{
231 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
232}
233
234#ifdef __cplusplus
235}
236#endif
237
238#endif
239