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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 <assert.h> |
14 | #include <stdio.h> |
15 | #include "list.h" |
16 | #ifndef __cplusplus |
17 | #include <stdbool.h> |
18 | #endif |
19 | |
20 | struct file { |
21 | struct file *next; |
22 | struct file *parent; |
23 | const char *name; |
24 | int lineno; |
25 | }; |
26 | |
27 | typedef enum tristate { |
28 | no, mod, yes |
29 | } tristate; |
30 | |
31 | enum expr_type { |
32 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE |
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 | |
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 | |
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 | |
66 | /* enum values are used as index to symbol.def[] */ |
67 | enum { |
68 | S_DEF_USER, /* main user value */ |
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 |
73 | }; |
74 | |
75 | struct 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 /* 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 /* write symbol to file (KCONFIG_CONFIG) */ |
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 */ |
108 | |
109 | /* choice values need to be set before calculating this symbol value */ |
110 | #define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000 |
111 | |
112 | /* Set symbol to y if allnoconfig; used for symbols that hide others */ |
113 | #define SYMBOL_ALLNOCONFIG_Y 0x200000 |
114 | |
115 | #define SYMBOL_MAXLENGTH 256 |
116 | #define SYMBOL_HASHSIZE 9973 |
117 | |
118 | /* A property represent the config options that can be associated |
119 | * with a config "symbol". |
120 | * Sample: |
121 | * config FOO |
122 | * default y |
123 | * prompt "foo prompt" |
124 | * select BAR |
125 | * config BAZ |
126 | * int "BAZ Value" |
127 | * range 1..255 |
128 | */ |
129 | enum prop_type { |
130 | P_UNKNOWN, |
131 | P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */ |
132 | P_COMMENT, /* text associated with a comment */ |
133 | P_MENU, /* prompt associated with a menuconfig option */ |
134 | P_DEFAULT, /* default y */ |
135 | P_CHOICE, /* choice value */ |
136 | P_SELECT, /* select BAR */ |
137 | P_RANGE, /* range 7..100 (for a symbol) */ |
138 | P_ENV, /* value from environment variable */ |
139 | P_SYMBOL, /* where a symbol is defined */ |
140 | }; |
141 | |
142 | struct property { |
143 | struct property *next; /* next property - null if last */ |
144 | struct symbol *sym; /* the symbol for which the property is associated */ |
145 | enum prop_type type; /* type of property */ |
146 | const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */ |
147 | struct expr_value visible; |
148 | struct expr *expr; /* the optional conditional part of the property */ |
149 | struct menu *menu; /* the menu the property are associated with |
150 | * valid for: P_SELECT, P_RANGE, P_CHOICE, |
151 | * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */ |
152 | struct file *file; /* what file was this property defined */ |
153 | int lineno; /* what lineno was this property defined */ |
154 | }; |
155 | |
156 | #define for_all_properties(sym, st, tok) \ |
157 | for (st = sym->prop; st; st = st->next) \ |
158 | if (st->type == (tok)) |
159 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) |
160 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) |
161 | #define for_all_prompts(sym, st) \ |
162 | for (st = sym->prop; st; st = st->next) \ |
163 | if (st->text) |
164 | |
165 | struct menu { |
166 | struct menu *next; |
167 | struct menu *parent; |
168 | struct menu *list; |
169 | struct symbol *sym; |
170 | struct property *prompt; |
171 | struct expr *visibility; |
172 | struct expr *dep; |
173 | unsigned int flags; |
174 | char *help; |
175 | struct file *file; |
176 | int lineno; |
177 | void *data; |
178 | }; |
179 | |
180 | #define MENU_CHANGED 0x0001 |
181 | #define MENU_ROOT 0x0002 |
182 | |
183 | struct jump_key { |
184 | struct list_head entries; |
185 | size_t offset; |
186 | struct menu *target; |
187 | int index; |
188 | }; |
189 | |
190 | #define JUMP_NB 9 |
191 | |
192 | extern struct file *file_list; |
193 | extern struct file *current_file; |
194 | struct file *lookup_file(const char *name); |
195 | |
196 | extern struct symbol symbol_yes, symbol_no, symbol_mod; |
197 | extern struct symbol *modules_sym; |
198 | extern struct symbol *sym_defconfig_list; |
199 | extern int cdebug; |
200 | struct expr *expr_alloc_symbol(struct symbol *sym); |
201 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); |
202 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); |
203 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); |
204 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); |
205 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); |
206 | struct expr *expr_copy(const struct expr *org); |
207 | void expr_free(struct expr *e); |
208 | int expr_eq(struct expr *e1, struct expr *e2); |
209 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); |
210 | tristate expr_calc_value(struct expr *e); |
211 | struct expr *expr_eliminate_yn(struct expr *e); |
212 | struct expr *expr_trans_bool(struct expr *e); |
213 | struct expr *expr_eliminate_dups(struct expr *e); |
214 | struct expr *expr_transform(struct expr *e); |
215 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); |
216 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); |
217 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); |
218 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); |
219 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); |
220 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); |
221 | struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2); |
222 | |
223 | void expr_fprint(struct expr *e, FILE *out); |
224 | struct gstr; /* forward */ |
225 | void expr_gstr_print(struct expr *e, struct gstr *gs); |
226 | |
227 | static inline int expr_is_yes(struct expr *e) |
228 | { |
229 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); |
230 | } |
231 | |
232 | static inline int expr_is_no(struct expr *e) |
233 | { |
234 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); |
235 | } |
236 | |
237 | #ifdef __cplusplus |
238 | } |
239 | #endif |
240 | |
241 | #endif /* EXPR_H */ |
242 |
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