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1da177e4 LT |
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 | |
1da177e4 LT |
28 | |
29 | typedef enum tristate { | |
30 | no, mod, yes | |
31 | } tristate; | |
32 | ||
33 | enum expr_type { | |
7a962923 | 34 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE |
1da177e4 LT |
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 | ||
d6ee3576 SR |
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)) | |
1da177e4 | 50 | |
7a962923 RZ |
51 | #define expr_list_for_each_sym(l, e, s) \ |
52 | for (e = (l); e && (s = e->right.sym); e = e->left.expr) | |
53 | ||
1da177e4 LT |
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 | ||
eaa2a874 | 68 | /* enum values are used as index to symbol.def[] */ |
0c1822e6 RZ |
69 | enum { |
70 | S_DEF_USER, /* main user value */ | |
eaa2a874 SR |
71 | S_DEF_AUTO, /* values read from auto.conf */ |
72 | S_DEF_DEF3, /* Reserved for UI usage */ | |
73 | S_DEF_DEF4, /* Reserved for UI usage */ | |
74 | S_DEF_COUNT | |
0c1822e6 RZ |
75 | }; |
76 | ||
1da177e4 LT |
77 | struct symbol { |
78 | struct symbol *next; | |
79 | char *name; | |
1da177e4 | 80 | enum symbol_type type; |
0c1822e6 | 81 | struct symbol_value curr; |
eaa2a874 | 82 | struct symbol_value def[S_DEF_COUNT]; |
1da177e4 LT |
83 | tristate visible; |
84 | int flags; | |
85 | struct property *prop; | |
1da177e4 LT |
86 | struct expr_value rev_dep; |
87 | }; | |
88 | ||
89 | #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) | |
90 | ||
c0e150ac | 91 | #define SYMBOL_CONST 0x0001 |
1da177e4 LT |
92 | #define SYMBOL_CHECK 0x0008 |
93 | #define SYMBOL_CHOICE 0x0010 | |
94 | #define SYMBOL_CHOICEVAL 0x0020 | |
1da177e4 LT |
95 | #define SYMBOL_VALID 0x0080 |
96 | #define SYMBOL_OPTIONAL 0x0100 | |
97 | #define SYMBOL_WRITE 0x0200 | |
98 | #define SYMBOL_CHANGED 0x0400 | |
1da177e4 LT |
99 | #define SYMBOL_AUTO 0x1000 |
100 | #define SYMBOL_CHECKED 0x2000 | |
1da177e4 | 101 | #define SYMBOL_WARNED 0x8000 |
669bfad9 RZ |
102 | #define SYMBOL_DEF 0x10000 |
103 | #define SYMBOL_DEF_USER 0x10000 | |
2e3646e5 | 104 | #define SYMBOL_DEF_AUTO 0x20000 |
669bfad9 RZ |
105 | #define SYMBOL_DEF3 0x40000 |
106 | #define SYMBOL_DEF4 0x80000 | |
1da177e4 LT |
107 | |
108 | #define SYMBOL_MAXLENGTH 256 | |
109 | #define SYMBOL_HASHSIZE 257 | |
110 | #define SYMBOL_HASHMASK 0xff | |
111 | ||
112 | enum prop_type { | |
93449082 RZ |
113 | P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, |
114 | P_SELECT, P_RANGE, P_ENV | |
1da177e4 LT |
115 | }; |
116 | ||
117 | struct property { | |
118 | struct property *next; | |
119 | struct symbol *sym; | |
120 | enum prop_type type; | |
121 | const char *text; | |
122 | struct expr_value visible; | |
123 | struct expr *expr; | |
124 | struct menu *menu; | |
125 | struct file *file; | |
126 | int lineno; | |
127 | }; | |
128 | ||
129 | #define for_all_properties(sym, st, tok) \ | |
130 | for (st = sym->prop; st; st = st->next) \ | |
131 | if (st->type == (tok)) | |
132 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) | |
133 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) | |
134 | #define for_all_prompts(sym, st) \ | |
135 | for (st = sym->prop; st; st = st->next) \ | |
136 | if (st->text) | |
137 | ||
138 | struct menu { | |
139 | struct menu *next; | |
140 | struct menu *parent; | |
141 | struct menu *list; | |
142 | struct symbol *sym; | |
143 | struct property *prompt; | |
144 | struct expr *dep; | |
145 | unsigned int flags; | |
03d29122 | 146 | char *help; |
1da177e4 LT |
147 | struct file *file; |
148 | int lineno; | |
149 | void *data; | |
150 | }; | |
151 | ||
152 | #define MENU_CHANGED 0x0001 | |
153 | #define MENU_ROOT 0x0002 | |
154 | ||
155 | #ifndef SWIG | |
156 | ||
157 | extern struct file *file_list; | |
158 | extern struct file *current_file; | |
159 | struct file *lookup_file(const char *name); | |
160 | ||
161 | extern struct symbol symbol_yes, symbol_no, symbol_mod; | |
162 | extern struct symbol *modules_sym; | |
face4374 | 163 | extern struct symbol *sym_defconfig_list; |
1da177e4 LT |
164 | extern int cdebug; |
165 | struct expr *expr_alloc_symbol(struct symbol *sym); | |
166 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); | |
167 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); | |
168 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); | |
169 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); | |
170 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); | |
171 | struct expr *expr_copy(struct expr *org); | |
172 | void expr_free(struct expr *e); | |
173 | int expr_eq(struct expr *e1, struct expr *e2); | |
174 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); | |
175 | tristate expr_calc_value(struct expr *e); | |
176 | struct expr *expr_eliminate_yn(struct expr *e); | |
177 | struct expr *expr_trans_bool(struct expr *e); | |
178 | struct expr *expr_eliminate_dups(struct expr *e); | |
179 | struct expr *expr_transform(struct expr *e); | |
180 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); | |
181 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); | |
182 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); | |
183 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); | |
184 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); | |
185 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); | |
186 | ||
187 | void expr_fprint(struct expr *e, FILE *out); | |
188 | struct gstr; /* forward */ | |
189 | void expr_gstr_print(struct expr *e, struct gstr *gs); | |
190 | ||
191 | static inline int expr_is_yes(struct expr *e) | |
192 | { | |
193 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); | |
194 | } | |
195 | ||
196 | static inline int expr_is_no(struct expr *e) | |
197 | { | |
198 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); | |
199 | } | |
200 | #endif | |
201 | ||
202 | #ifdef __cplusplus | |
203 | } | |
204 | #endif | |
205 | ||
206 | #endif /* EXPR_H */ |