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path: root/scripts/kconfig/expr.h
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diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
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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
10extern "C" {
11#endif
12
13#include <stdio.h>
14#ifndef __cplusplus
15#include <stdbool.h>
16#endif
17
18struct file {
19 struct file *next;
20 struct file *parent;
21#ifdef CML1
22 struct statement *stmt;
23 struct statement *last_stmt;
24#endif
25 char *name;
26 int lineno;
27 int flags;
28};
29
30 #define FILE_BUSY 0x0001
31 #define FILE_SCANNED 0x0002
32 #define FILE_PRINTED 0x0004
33
34typedef enum tristate {
35 no, mod, yes
36} tristate;
37
38enum expr_type {
39 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL
40};
41
42union expr_data {
43 struct expr *expr;
44 struct symbol *sym;
45};
46
47struct expr {
48#ifdef CML1
49 int token;
50#else
51 enum expr_type type;
52#endif
53 union expr_data left, right;
54};
55
56 #define E_TRI(ev)((ev).tri)
57 #define E_EXPR(ev)((ev).expr)
58 #define E_CALC(ev)(E_TRI(ev) = expr_calc_value(E_EXPR(ev)))
59
60 #define E_OR(dep1, dep2)(((dep1)>(dep2))?(dep1):(dep2))
61 #define E_AND(dep1, dep2)(((dep1)<(dep2))?(dep1):(dep2))
62 #define E_NOT(dep) (2-(dep))
63
64struct expr_value {
65 struct expr *expr;
66 tristate tri;
67};
68
69 #define S_VAL(sv)((sv).value)
70 #define S_TRI(sv)((sv).tri)
71 #define S_EQ(sv1, sv2)(S_VAL(sv1) == S_VAL(sv2) || !strcmp(S_VAL(sv1), S_VAL(sv2)))
72
73struct symbol_value {
74 void *value;
75 tristate tri;
76};
77
78enum symbol_type {
79 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
80};
81
82struct symbol {
83 struct symbol *next;
84 char *name;
85 char *help;
86#ifdef CML1
87 int type;
88#else
89 enum symbol_type type;
90#endif
91 struct symbol_value curr, def;
92 tristate visible;
93 int flags;
94 struct property *prop;
95 struct expr *dep, *dep2;
96 struct menu *menu;
97};
98
99#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)
100
101#ifdef CML1
102 #define SYMBOL_UNKNOWN S_UNKNOWN
103 #define SYMBOL_BOOLEAN S_BOOLEAN
104 #define SYMBOL_TRISTATE S_TRISTATE
105 #define SYMBOL_INT S_INT
106 #define SYMBOL_HEX S_HEX
107 #define SYMBOL_STRING S_STRING
108 #define SYMBOL_OTHER S_OTHER
109#endif
110
111 #define SYMBOL_YES 0x0001
112 #define SYMBOL_MOD 0x0002
113 #define SYMBOL_NO 0x0004
114 #define SYMBOL_CONST 0x0007
115 #define SYMBOL_CHECK 0x0008
116 #define SYMBOL_CHOICE 0x0010
117 #define SYMBOL_CHOICEVAL0x0020
118 #define SYMBOL_PRINTED 0x0040
119 #define SYMBOL_VALID 0x0080
120 #define SYMBOL_OPTIONAL 0x0100
121 #define SYMBOL_WRITE 0x0200
122 #define SYMBOL_CHANGED 0x0400
123 #define SYMBOL_NEW 0x0800
124 #define SYMBOL_AUTO 0x1000
125
126 #define SYMBOL_MAXLENGTH256
127 #define SYMBOL_HASHSIZE 257
128 #define SYMBOL_HASHMASK 0xff
129
130enum prop_type {
131 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_ROOTMENU, P_DEFAULT, P_CHOICE
132};
133
134struct property {
135 struct property *next;
136 struct symbol *sym;
137#ifdef CML1
138 int token;
139#else
140 enum prop_type type;
141#endif
142 const char *text;
143 struct symbol *def;
144 struct expr_value visible;
145 struct expr *dep;
146 struct expr *dep2;
147 struct menu *menu;
148 struct file *file;
149 int lineno;
150#ifdef CML1
151 struct property *next_pos;
152#endif
153};
154
155#define for_all_properties(sym, st, tok) \
156 for (st = sym->prop; st; st = st->next) \
157 if (st->type == (tok))
158#define for_all_prompts(sym, st) for_all_properties(sym, st, P_PROMPT)
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
162struct menu {
163 struct menu *next;
164 struct menu *parent;
165 struct menu *list;
166 struct symbol *sym;
167 struct property *prompt;
168 struct expr *dep;
169 //char *help;
170 struct file *file;
171 int lineno;
172 //void *data;
173};
174
175#ifndef SWIG
176
177extern struct file *file_list;
178extern struct file *current_file;
179struct file *lookup_file(const char *name);
180
181extern struct symbol symbol_yes, symbol_no, symbol_mod;
182extern struct symbol *modules_sym;
183extern int cdebug;
184extern int print_type;
185struct expr *expr_alloc_symbol(struct symbol *sym);
186#ifdef CML1
187struct expr *expr_alloc_one(int token, struct expr *ce);
188struct expr *expr_alloc_two(int token, struct expr *e1, struct expr *e2);
189struct expr *expr_alloc_comp(int token, struct symbol *s1, struct symbol *s2);
190#else
191struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
192struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
193struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
194#endif
195struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
196struct expr *expr_copy(struct expr *org);
197void expr_free(struct expr *e);
198int expr_eq(struct expr *e1, struct expr *e2);
199void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
200tristate expr_calc_value(struct expr *e);
201struct expr *expr_eliminate_yn(struct expr *e);
202struct expr *expr_trans_bool(struct expr *e);
203struct expr *expr_eliminate_dups(struct expr *e);
204struct expr *expr_transform(struct expr *e);
205int expr_contains_symbol(struct expr *dep, struct symbol *sym);
206bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
207struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
208struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
209void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
210struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
211
212void expr_fprint(struct expr *e, FILE *out);
213void print_expr(int mask, struct expr *e, int prevtoken);
214
215#ifdef CML1
216static inline int expr_is_yes(struct expr *e)
217{
218 return !e || (e->token == WORD && e->left.sym == &symbol_yes);
219}
220
221static inline int expr_is_no(struct expr *e)
222{
223 return e && (e->token == WORD && e->left.sym == &symbol_no);
224}
225#else
226static inline int expr_is_yes(struct expr *e)
227{
228 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
229}
230
231static inline int expr_is_no(struct expr *e)
232{
233 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
234}
235#endif
236#endif
237
238#ifdef __cplusplus
239}
240#endif
241
242#endif /* EXPR_H */