Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 char *name;
22 int lineno;
23 int flags;
24};
25
26#define FILE_BUSY 0x0001
27#define FILE_SCANNED 0x0002
28
29typedef enum tristate {
30 no, mod, yes
31} tristate;
32
33enum expr_type {
34 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
35};
36
37union expr_data {
38 struct expr *expr;
39 struct symbol *sym;
40};
41
42struct expr {
43 enum expr_type type;
44 union expr_data left, right;
45};
46
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))
50
51#define expr_list_for_each_sym(l, e, s) \
52 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
53
54struct expr_value {
55 struct expr *expr;
56 tristate tri;
57};
58
59struct symbol_value {
60 void *val;
61 tristate tri;
62};
63
64enum symbol_type {
65 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
66};
67
68enum {
69 S_DEF_USER, /* main user value */
70 S_DEF_AUTO,
71};
72
73struct symbol {
74 struct symbol *next;
75 char *name;
76 enum symbol_type type;
77 struct symbol_value curr;
78 struct symbol_value def[4];
79 tristate visible;
80 int flags;
81 struct property *prop;
82 struct expr_value rev_dep;
83};
84
85#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)
86
87#define SYMBOL_CONST 0x0001
88#define SYMBOL_CHECK 0x0008
89#define SYMBOL_CHOICE 0x0010
90#define SYMBOL_CHOICEVAL 0x0020
91#define SYMBOL_VALID 0x0080
92#define SYMBOL_OPTIONAL 0x0100
93#define SYMBOL_WRITE 0x0200
94#define SYMBOL_CHANGED 0x0400
95#define SYMBOL_AUTO 0x1000
96#define SYMBOL_CHECKED 0x2000
97#define SYMBOL_WARNED 0x8000
98#define SYMBOL_DEF 0x10000
99#define SYMBOL_DEF_USER 0x10000
100#define SYMBOL_DEF_AUTO 0x20000
101#define SYMBOL_DEF3 0x40000
102#define SYMBOL_DEF4 0x80000
103
104#define SYMBOL_MAXLENGTH 256
105#define SYMBOL_HASHSIZE 257
106#define SYMBOL_HASHMASK 0xff
107
108enum prop_type {
109 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,
110 P_SELECT, P_RANGE, P_ENV
111};
112
113struct property {
114 struct property *next;
115 struct symbol *sym;
116 enum prop_type type;
117 const char *text;
118 struct expr_value visible;
119 struct expr *expr;
120 struct menu *menu;
121 struct file *file;
122 int lineno;
123};
124
125#define for_all_properties(sym, st, tok) \
126 for (st = sym->prop; st; st = st->next) \
127 if (st->type == (tok))
128#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
129#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
130#define for_all_prompts(sym, st) \
131 for (st = sym->prop; st; st = st->next) \
132 if (st->text)
133
134struct menu {
135 struct menu *next;
136 struct menu *parent;
137 struct menu *list;
138 struct symbol *sym;
139 struct property *prompt;
140 struct expr *dep;
141 unsigned int flags;
142 char *help;
143 struct file *file;
144 int lineno;
145 void *data;
146};
147
148#define MENU_CHANGED 0x0001
149#define MENU_ROOT 0x0002
150
151#ifndef SWIG
152
153extern struct file *file_list;
154extern struct file *current_file;
155struct file *lookup_file(const char *name);
156
157extern struct symbol symbol_yes, symbol_no, symbol_mod;
158extern struct symbol *modules_sym;
159extern struct symbol *sym_defconfig_list;
160extern int cdebug;
161struct expr *expr_alloc_symbol(struct symbol *sym);
162struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
163struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
164struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
165struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
166struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
167struct expr *expr_copy(struct expr *org);
168void expr_free(struct expr *e);
169int expr_eq(struct expr *e1, struct expr *e2);
170void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
171tristate expr_calc_value(struct expr *e);
172struct expr *expr_eliminate_yn(struct expr *e);
173struct expr *expr_trans_bool(struct expr *e);
174struct expr *expr_eliminate_dups(struct expr *e);
175struct expr *expr_transform(struct expr *e);
176int expr_contains_symbol(struct expr *dep, struct symbol *sym);
177bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
178struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
179struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
180void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
181struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
182
183void expr_fprint(struct expr *e, FILE *out);
184struct gstr; /* forward */
185void expr_gstr_print(struct expr *e, struct gstr *gs);
186
187static inline int expr_is_yes(struct expr *e)
188{
189 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
190}
191
192static inline int expr_is_no(struct expr *e)
193{
194 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
195}
196#endif
197
198#ifdef __cplusplus
199}
200#endif
201
202#endif /* EXPR_H */