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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 | ||
37ae2d59 | 13 | #include <assert.h> |
1da177e4 | 14 | #include <stdio.h> |
bad9955d | 15 | #include "list.h" |
1da177e4 LT |
16 | #ifndef __cplusplus |
17 | #include <stdbool.h> | |
18 | #endif | |
19 | ||
20 | struct file { | |
21 | struct file *next; | |
22 | struct file *parent; | |
2e7a0918 | 23 | const char *name; |
1da177e4 | 24 | int lineno; |
1da177e4 LT |
25 | }; |
26 | ||
1da177e4 LT |
27 | typedef enum tristate { |
28 | no, mod, yes | |
29 | } tristate; | |
30 | ||
31 | enum expr_type { | |
7a962923 | 32 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE |
1da177e4 LT |
33 | }; |
34 | ||
35 | union expr_data { | |
36 | struct expr *expr; | |
37 | struct symbol *sym; | |
38 | }; | |
39 | ||
40 | struct expr { | |
41 | enum expr_type type; | |
42 | union expr_data left, right; | |
43 | }; | |
44 | ||
d6ee3576 SR |
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)) | |
1da177e4 | 48 | |
7a962923 RZ |
49 | #define expr_list_for_each_sym(l, e, s) \ |
50 | for (e = (l); e && (s = e->right.sym); e = e->left.expr) | |
51 | ||
1da177e4 LT |
52 | struct expr_value { |
53 | struct expr *expr; | |
54 | tristate tri; | |
55 | }; | |
56 | ||
57 | struct symbol_value { | |
58 | void *val; | |
59 | tristate tri; | |
60 | }; | |
61 | ||
62 | enum symbol_type { | |
63 | S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER | |
64 | }; | |
65 | ||
eaa2a874 | 66 | /* enum values are used as index to symbol.def[] */ |
0c1822e6 RZ |
67 | enum { |
68 | S_DEF_USER, /* main user value */ | |
eaa2a874 SR |
69 | S_DEF_AUTO, /* values read from auto.conf */ |
70 | S_DEF_DEF3, /* Reserved for UI usage */ | |
71 | S_DEF_DEF4, /* Reserved for UI usage */ | |
72 | S_DEF_COUNT | |
0c1822e6 RZ |
73 | }; |
74 | ||
1da177e4 LT |
75 | struct symbol { |
76 | struct symbol *next; | |
77 | char *name; | |
1da177e4 | 78 | enum symbol_type type; |
0c1822e6 | 79 | struct symbol_value curr; |
eaa2a874 | 80 | struct symbol_value def[S_DEF_COUNT]; |
1da177e4 LT |
81 | tristate visible; |
82 | int flags; | |
83 | struct property *prop; | |
246cf9c2 | 84 | struct expr_value dir_dep; |
1da177e4 LT |
85 | struct expr_value rev_dep; |
86 | }; | |
87 | ||
e66f25d7 | 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) |
1da177e4 | 89 | |
5b2cf365 SR |
90 | #define SYMBOL_CONST 0x0001 /* symbol is const */ |
91 | #define SYMBOL_CHECK 0x0008 /* used during dependency checking */ | |
92 | #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */ | |
93 | #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */ | |
94 | #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */ | |
95 | #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */ | |
96 | #define SYMBOL_WRITE 0x0200 /* ? */ | |
97 | #define SYMBOL_CHANGED 0x0400 /* ? */ | |
98 | #define SYMBOL_AUTO 0x1000 /* value from environment variable */ | |
99 | #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */ | |
100 | #define SYMBOL_WARNED 0x8000 /* warning has been issued */ | |
101 | ||
102 | /* Set when symbol.def[] is used */ | |
103 | #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */ | |
104 | #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */ | |
105 | #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */ | |
106 | #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */ | |
107 | #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */ | |
1da177e4 LT |
108 | |
109 | #define SYMBOL_MAXLENGTH 256 | |
e66f25d7 | 110 | #define SYMBOL_HASHSIZE 9973 |
1da177e4 | 111 | |
cf82607a SR |
112 | /* A property represent the config options that can be associated |
113 | * with a config "symbol". | |
114 | * Sample: | |
115 | * config FOO | |
116 | * default y | |
117 | * prompt "foo prompt" | |
118 | * select BAR | |
119 | * config BAZ | |
120 | * int "BAZ Value" | |
121 | * range 1..255 | |
122 | */ | |
1da177e4 | 123 | enum prop_type { |
cf82607a SR |
124 | P_UNKNOWN, |
125 | P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */ | |
126 | P_COMMENT, /* text associated with a comment */ | |
127 | P_MENU, /* prompt associated with a menuconfig option */ | |
128 | P_DEFAULT, /* default y */ | |
129 | P_CHOICE, /* choice value */ | |
130 | P_SELECT, /* select BAR */ | |
131 | P_RANGE, /* range 7..100 (for a symbol) */ | |
132 | P_ENV, /* value from environment variable */ | |
59e89e3d | 133 | P_SYMBOL, /* where a symbol is defined */ |
1da177e4 LT |
134 | }; |
135 | ||
136 | struct property { | |
cf82607a SR |
137 | struct property *next; /* next property - null if last */ |
138 | struct symbol *sym; /* the symbol for which the property is associated */ | |
139 | enum prop_type type; /* type of property */ | |
140 | const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */ | |
1da177e4 | 141 | struct expr_value visible; |
cf82607a SR |
142 | struct expr *expr; /* the optional conditional part of the property */ |
143 | struct menu *menu; /* the menu the property are associated with | |
144 | * valid for: P_SELECT, P_RANGE, P_CHOICE, | |
145 | * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */ | |
146 | struct file *file; /* what file was this property defined */ | |
147 | int lineno; /* what lineno was this property defined */ | |
1da177e4 LT |
148 | }; |
149 | ||
150 | #define for_all_properties(sym, st, tok) \ | |
151 | for (st = sym->prop; st; st = st->next) \ | |
152 | if (st->type == (tok)) | |
153 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) | |
154 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) | |
155 | #define for_all_prompts(sym, st) \ | |
156 | for (st = sym->prop; st; st = st->next) \ | |
157 | if (st->text) | |
158 | ||
159 | struct menu { | |
160 | struct menu *next; | |
161 | struct menu *parent; | |
162 | struct menu *list; | |
163 | struct symbol *sym; | |
164 | struct property *prompt; | |
86e187ff | 165 | struct expr *visibility; |
1da177e4 LT |
166 | struct expr *dep; |
167 | unsigned int flags; | |
03d29122 | 168 | char *help; |
1da177e4 LT |
169 | struct file *file; |
170 | int lineno; | |
171 | void *data; | |
172 | }; | |
173 | ||
174 | #define MENU_CHANGED 0x0001 | |
175 | #define MENU_ROOT 0x0002 | |
176 | ||
95ac9b3b | 177 | struct jump_key { |
bad9955d | 178 | struct list_head entries; |
95ac9b3b BP |
179 | size_t offset; |
180 | struct menu *target; | |
181 | int index; | |
182 | }; | |
95ac9b3b | 183 | |
5e609add BP |
184 | #define JUMP_NB 9 |
185 | ||
1da177e4 LT |
186 | extern struct file *file_list; |
187 | extern struct file *current_file; | |
188 | struct file *lookup_file(const char *name); | |
189 | ||
190 | extern struct symbol symbol_yes, symbol_no, symbol_mod; | |
191 | extern struct symbol *modules_sym; | |
face4374 | 192 | extern struct symbol *sym_defconfig_list; |
1da177e4 LT |
193 | extern int cdebug; |
194 | struct expr *expr_alloc_symbol(struct symbol *sym); | |
195 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); | |
196 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); | |
197 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); | |
198 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); | |
199 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); | |
17742dc7 | 200 | struct expr *expr_copy(const struct expr *org); |
1da177e4 LT |
201 | void expr_free(struct expr *e); |
202 | int expr_eq(struct expr *e1, struct expr *e2); | |
203 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); | |
204 | tristate expr_calc_value(struct expr *e); | |
205 | struct expr *expr_eliminate_yn(struct expr *e); | |
206 | struct expr *expr_trans_bool(struct expr *e); | |
207 | struct expr *expr_eliminate_dups(struct expr *e); | |
208 | struct expr *expr_transform(struct expr *e); | |
209 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); | |
210 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); | |
211 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); | |
212 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); | |
213 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); | |
214 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); | |
0597fcd0 | 215 | struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2); |
1da177e4 LT |
216 | |
217 | void expr_fprint(struct expr *e, FILE *out); | |
218 | struct gstr; /* forward */ | |
219 | void expr_gstr_print(struct expr *e, struct gstr *gs); | |
220 | ||
221 | static inline int expr_is_yes(struct expr *e) | |
222 | { | |
223 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); | |
224 | } | |
225 | ||
226 | static inline int expr_is_no(struct expr *e) | |
227 | { | |
228 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); | |
229 | } | |
1da177e4 LT |
230 | |
231 | #ifdef __cplusplus | |
232 | } | |
233 | #endif | |
234 | ||
235 | #endif /* EXPR_H */ |