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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 | |
28 | #define FILE_PRINTED 0x0004 | |
29 | ||
30 | typedef enum tristate { | |
31 | no, mod, yes | |
32 | } tristate; | |
33 | ||
34 | enum expr_type { | |
35 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE | |
36 | }; | |
37 | ||
38 | union expr_data { | |
39 | struct expr *expr; | |
40 | struct symbol *sym; | |
41 | }; | |
42 | ||
43 | struct expr { | |
44 | enum expr_type type; | |
45 | union expr_data left, right; | |
46 | }; | |
47 | ||
48 | #define E_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) | |
49 | #define E_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) | |
50 | #define E_NOT(dep) (2-(dep)) | |
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 | struct symbol { | |
67 | struct symbol *next; | |
68 | char *name; | |
69 | char *help; | |
70 | enum symbol_type type; | |
71 | struct symbol_value curr, user; | |
72 | tristate visible; | |
73 | int flags; | |
74 | struct property *prop; | |
75 | struct expr *dep, *dep2; | |
76 | struct expr_value rev_dep; | |
77 | }; | |
78 | ||
79 | #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) | |
80 | ||
81 | #define SYMBOL_YES 0x0001 | |
82 | #define SYMBOL_MOD 0x0002 | |
83 | #define SYMBOL_NO 0x0004 | |
84 | #define SYMBOL_CONST 0x0007 | |
85 | #define SYMBOL_CHECK 0x0008 | |
86 | #define SYMBOL_CHOICE 0x0010 | |
87 | #define SYMBOL_CHOICEVAL 0x0020 | |
88 | #define SYMBOL_PRINTED 0x0040 | |
89 | #define SYMBOL_VALID 0x0080 | |
90 | #define SYMBOL_OPTIONAL 0x0100 | |
91 | #define SYMBOL_WRITE 0x0200 | |
92 | #define SYMBOL_CHANGED 0x0400 | |
93 | #define SYMBOL_NEW 0x0800 | |
94 | #define SYMBOL_AUTO 0x1000 | |
95 | #define SYMBOL_CHECKED 0x2000 | |
96 | #define SYMBOL_CHECK_DONE 0x4000 | |
97 | #define SYMBOL_WARNED 0x8000 | |
98 | ||
99 | #define SYMBOL_MAXLENGTH 256 | |
100 | #define SYMBOL_HASHSIZE 257 | |
101 | #define SYMBOL_HASHMASK 0xff | |
102 | ||
103 | enum prop_type { | |
104 | P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE | |
105 | }; | |
106 | ||
107 | struct property { | |
108 | struct property *next; | |
109 | struct symbol *sym; | |
110 | enum prop_type type; | |
111 | const char *text; | |
112 | struct expr_value visible; | |
113 | struct expr *expr; | |
114 | struct menu *menu; | |
115 | struct file *file; | |
116 | int lineno; | |
117 | }; | |
118 | ||
119 | #define for_all_properties(sym, st, tok) \ | |
120 | for (st = sym->prop; st; st = st->next) \ | |
121 | if (st->type == (tok)) | |
122 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) | |
123 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) | |
124 | #define for_all_prompts(sym, st) \ | |
125 | for (st = sym->prop; st; st = st->next) \ | |
126 | if (st->text) | |
127 | ||
128 | struct menu { | |
129 | struct menu *next; | |
130 | struct menu *parent; | |
131 | struct menu *list; | |
132 | struct symbol *sym; | |
133 | struct property *prompt; | |
134 | struct expr *dep; | |
135 | unsigned int flags; | |
136 | //char *help; | |
137 | struct file *file; | |
138 | int lineno; | |
139 | void *data; | |
140 | }; | |
141 | ||
142 | #define MENU_CHANGED 0x0001 | |
143 | #define MENU_ROOT 0x0002 | |
144 | ||
145 | #ifndef SWIG | |
146 | ||
147 | extern struct file *file_list; | |
148 | extern struct file *current_file; | |
149 | struct file *lookup_file(const char *name); | |
150 | ||
151 | extern struct symbol symbol_yes, symbol_no, symbol_mod; | |
152 | extern struct symbol *modules_sym; | |
153 | extern int cdebug; | |
154 | struct expr *expr_alloc_symbol(struct symbol *sym); | |
155 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); | |
156 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); | |
157 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); | |
158 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); | |
159 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); | |
160 | struct expr *expr_copy(struct expr *org); | |
161 | void expr_free(struct expr *e); | |
162 | int expr_eq(struct expr *e1, struct expr *e2); | |
163 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); | |
164 | tristate expr_calc_value(struct expr *e); | |
165 | struct expr *expr_eliminate_yn(struct expr *e); | |
166 | struct expr *expr_trans_bool(struct expr *e); | |
167 | struct expr *expr_eliminate_dups(struct expr *e); | |
168 | struct expr *expr_transform(struct expr *e); | |
169 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); | |
170 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); | |
171 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); | |
172 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); | |
173 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); | |
174 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); | |
175 | ||
176 | void expr_fprint(struct expr *e, FILE *out); | |
177 | struct gstr; /* forward */ | |
178 | void expr_gstr_print(struct expr *e, struct gstr *gs); | |
179 | ||
180 | static inline int expr_is_yes(struct expr *e) | |
181 | { | |
182 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); | |
183 | } | |
184 | ||
185 | static inline int expr_is_no(struct expr *e) | |
186 | { | |
187 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); | |
188 | } | |
189 | #endif | |
190 | ||
191 | #ifdef __cplusplus | |
192 | } | |
193 | #endif | |
194 | ||
195 | #endif /* EXPR_H */ |