1 /*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
6 #ifndef EXPR_H
7 #define EXPR_H
8
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12
13 #include <stdio.h>
14 #ifndef __cplusplus
15 #include <stdbool.h>
16 #endif
17
18 struct file {
19 struct file *next;
20 struct file *parent;
21 char *name;
22 int lineno;
23 int flags;
24 };
25
26 #define FILE_BUSY 0x0001
27 #define FILE_SCANNED 0x0002
28
29 typedef enum tristate {
30 no, mod, yes
31 } tristate;
32
33 enum expr_type {
34 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
35 };
36
37 union expr_data {
38 struct expr *expr;
39 struct symbol *sym;
40 };
41
42 struct 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
54 struct expr_value {
55 struct expr *expr;
56 tristate tri;
57 };
58
59 struct symbol_value {
60 void *val;
61 tristate tri;
62 };
63
64 enum symbol_type {
65 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
66 };
67
68 enum {
69 S_DEF_USER, /* main user value */
70 S_DEF_AUTO,
71 };
72
73 struct symbol {
74 struct symbol *next;
75 char *name;
76 enum symbol_type type;
77 struct symbol_value curr;
78 struct symbol_value def[4];
79 tristate visible;
80 int flags;
81 struct property *prop;
82 struct expr_value rev_dep;
83 };
84
85 #define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
86
87 #define SYMBOL_CONST 0x0001
88 #define SYMBOL_CHECK 0x0008
89 #define SYMBOL_CHOICE 0x0010
90 #define SYMBOL_CHOICEVAL 0x0020
91 #define SYMBOL_VALID 0x0080
92 #define SYMBOL_OPTIONAL 0x0100
93 #define SYMBOL_WRITE 0x0200
94 #define SYMBOL_CHANGED 0x0400
95 #define SYMBOL_AUTO 0x1000
96 #define SYMBOL_CHECKED 0x2000
97 #define SYMBOL_WARNED 0x8000
98 #define SYMBOL_DEF 0x10000
99 #define SYMBOL_DEF_USER 0x10000
100 #define SYMBOL_DEF_AUTO 0x20000
101 #define SYMBOL_DEF3 0x40000
102 #define SYMBOL_DEF4 0x80000
103
104 #define SYMBOL_MAXLENGTH 256
105 #define SYMBOL_HASHSIZE 257
106 #define SYMBOL_HASHMASK 0xff
107
108 enum prop_type {
109 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,
110 P_SELECT, P_RANGE, P_ENV
111 };
112
113 struct property {
114 struct property *next;
115 struct symbol *sym;
116 enum prop_type type;
117 const char *text;
118 struct expr_value visible;
119 struct expr *expr;
120 struct menu *menu;
121 struct file *file;
122 int lineno;
123 };
124
125 #define for_all_properties(sym, st, tok) \
126 for (st = sym->prop; st; st = st->next) \
127 if (st->type == (tok))
128 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
129 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
130 #define for_all_prompts(sym, st) \
131 for (st = sym->prop; st; st = st->next) \
132 if (st->text)
133
134 struct menu {
135 struct menu *next;
136 struct menu *parent;
137 struct menu *list;
138 struct symbol *sym;
139 struct property *prompt;
140 struct expr *dep;
141 unsigned int flags;
142 char *help;
143 struct file *file;
144 int lineno;
145 void *data;
146 };
147
148 #define MENU_CHANGED 0x0001
149 #define MENU_ROOT 0x0002
150
151 #ifndef SWIG
152
153 extern struct file *file_list;
154 extern struct file *current_file;
155 struct file *lookup_file(const char *name);
156
157 extern struct symbol symbol_yes, symbol_no, symbol_mod;
158 extern struct symbol *modules_sym;
159 extern struct symbol *sym_defconfig_list;
160 extern int cdebug;
161 struct expr *expr_alloc_symbol(struct symbol *sym);
162 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
163 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
164 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
165 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
166 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
167 struct expr *expr_copy(struct expr *org);
168 void expr_free(struct expr *e);
169 int expr_eq(struct expr *e1, struct expr *e2);
170 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
171 tristate expr_calc_value(struct expr *e);
172 struct expr *expr_eliminate_yn(struct expr *e);
173 struct expr *expr_trans_bool(struct expr *e);
174 struct expr *expr_eliminate_dups(struct expr *e);
175 struct expr *expr_transform(struct expr *e);
176 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
177 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
178 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
179 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
180 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
181 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
182
183 void expr_fprint(struct expr *e, FILE *out);
184 struct gstr; /* forward */
185 void expr_gstr_print(struct expr *e, struct gstr *gs);
186
187 static inline int expr_is_yes(struct expr *e)
188 {
189 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
190 }
191
192 static inline int expr_is_no(struct expr *e)
193 {
194 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
195 }
196 #endif
197
198 #ifdef __cplusplus
199 }
200 #endif
201
202 #endif /* EXPR_H */
203
|
This page was automatically generated by the
LXR engine.
|