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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 <assert.h>
14#include <stdio.h>
15#include "list.h"
16#ifndef __cplusplus
17#include <stdbool.h>
18#endif
19
20struct file {
21 struct file *next;
22 struct file *parent;
23 const char *name;
24 int lineno;
25};
26
27typedef enum tristate {
28 no, mod, yes
29} tristate;
30
31enum expr_type {
32 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
33};
34
35union expr_data {
36 struct expr *expr;
37 struct symbol *sym;
38};
39
40struct 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
52struct expr_value {
53 struct expr *expr;
54 tristate tri;
55};
56
57struct symbol_value {
58 void *val;
59 tristate tri;
60};
61
62enum 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[] */
67enum {
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
75struct 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 */
129enum 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
142struct 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
165struct 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
183struct 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
192extern struct file *file_list;
193extern struct file *current_file;
194struct file *lookup_file(const char *name);
195
196extern struct symbol symbol_yes, symbol_no, symbol_mod;
197extern struct symbol *modules_sym;
198extern struct symbol *sym_defconfig_list;
199extern int cdebug;
200struct expr *expr_alloc_symbol(struct symbol *sym);
201struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
202struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
203struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
204struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
205struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
206struct expr *expr_copy(const struct expr *org);
207void expr_free(struct expr *e);
208int expr_eq(struct expr *e1, struct expr *e2);
209void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
210tristate expr_calc_value(struct expr *e);
211struct expr *expr_eliminate_yn(struct expr *e);
212struct expr *expr_trans_bool(struct expr *e);
213struct expr *expr_eliminate_dups(struct expr *e);
214struct expr *expr_transform(struct expr *e);
215int expr_contains_symbol(struct expr *dep, struct symbol *sym);
216bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
217struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
218struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
219void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
220struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
221struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
222
223void expr_fprint(struct expr *e, FILE *out);
224struct gstr; /* forward */
225void expr_gstr_print(struct expr *e, struct gstr *gs);
226
227static inline int expr_is_yes(struct expr *e)
228{
229 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
230}
231
232static 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 */
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 <assert.h>
14#include <stdio.h>
15#ifndef __cplusplus
16#include <stdbool.h>
17#endif
18
19struct file {
20 struct file *next;
21 struct file *parent;
22 const char *name;
23 int lineno;
24};
25
26typedef enum tristate {
27 no, mod, yes
28} tristate;
29
30enum expr_type {
31 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
32};
33
34union expr_data {
35 struct expr *expr;
36 struct symbol *sym;
37};
38
39struct expr {
40 enum expr_type type;
41 union expr_data left, right;
42};
43
44#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
45#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
46#define EXPR_NOT(dep) (2-(dep))
47
48#define expr_list_for_each_sym(l, e, s) \
49 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
50
51struct expr_value {
52 struct expr *expr;
53 tristate tri;
54};
55
56struct symbol_value {
57 void *val;
58 tristate tri;
59};
60
61enum symbol_type {
62 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
63};
64
65/* enum values are used as index to symbol.def[] */
66enum {
67 S_DEF_USER, /* main user value */
68 S_DEF_AUTO, /* values read from auto.conf */
69 S_DEF_DEF3, /* Reserved for UI usage */
70 S_DEF_DEF4, /* Reserved for UI usage */
71 S_DEF_COUNT
72};
73
74struct symbol {
75 struct symbol *next;
76 char *name;
77 enum symbol_type type;
78 struct symbol_value curr;
79 struct symbol_value def[S_DEF_COUNT];
80 tristate visible;
81 int flags;
82 struct property *prop;
83 struct expr_value dir_dep;
84 struct expr_value rev_dep;
85};
86
87#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)
88
89#define SYMBOL_CONST 0x0001 /* symbol is const */
90#define SYMBOL_CHECK 0x0008 /* used during dependency checking */
91#define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
92#define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
93#define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
94#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
95#define SYMBOL_WRITE 0x0200 /* ? */
96#define SYMBOL_CHANGED 0x0400 /* ? */
97#define SYMBOL_AUTO 0x1000 /* value from environment variable */
98#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
99#define SYMBOL_WARNED 0x8000 /* warning has been issued */
100
101/* Set when symbol.def[] is used */
102#define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
103#define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
104#define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
105#define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
106#define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
107
108#define SYMBOL_MAXLENGTH 256
109#define SYMBOL_HASHSIZE 9973
110
111/* A property represent the config options that can be associated
112 * with a config "symbol".
113 * Sample:
114 * config FOO
115 * default y
116 * prompt "foo prompt"
117 * select BAR
118 * config BAZ
119 * int "BAZ Value"
120 * range 1..255
121 */
122enum prop_type {
123 P_UNKNOWN,
124 P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
125 P_COMMENT, /* text associated with a comment */
126 P_MENU, /* prompt associated with a menuconfig option */
127 P_DEFAULT, /* default y */
128 P_CHOICE, /* choice value */
129 P_SELECT, /* select BAR */
130 P_RANGE, /* range 7..100 (for a symbol) */
131 P_ENV, /* value from environment variable */
132 P_SYMBOL, /* where a symbol is defined */
133};
134
135struct property {
136 struct property *next; /* next property - null if last */
137 struct symbol *sym; /* the symbol for which the property is associated */
138 enum prop_type type; /* type of property */
139 const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
140 struct expr_value visible;
141 struct expr *expr; /* the optional conditional part of the property */
142 struct menu *menu; /* the menu the property are associated with
143 * valid for: P_SELECT, P_RANGE, P_CHOICE,
144 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
145 struct file *file; /* what file was this property defined */
146 int lineno; /* what lineno was this property defined */
147};
148
149#define for_all_properties(sym, st, tok) \
150 for (st = sym->prop; st; st = st->next) \
151 if (st->type == (tok))
152#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
153#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
154#define for_all_prompts(sym, st) \
155 for (st = sym->prop; st; st = st->next) \
156 if (st->text)
157
158struct menu {
159 struct menu *next;
160 struct menu *parent;
161 struct menu *list;
162 struct symbol *sym;
163 struct property *prompt;
164 struct expr *visibility;
165 struct expr *dep;
166 unsigned int flags;
167 char *help;
168 struct file *file;
169 int lineno;
170 void *data;
171};
172
173#define MENU_CHANGED 0x0001
174#define MENU_ROOT 0x0002
175
176extern struct file *file_list;
177extern struct file *current_file;
178struct file *lookup_file(const char *name);
179
180extern struct symbol symbol_yes, symbol_no, symbol_mod;
181extern struct symbol *modules_sym;
182extern struct symbol *sym_defconfig_list;
183extern int cdebug;
184struct expr *expr_alloc_symbol(struct symbol *sym);
185struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
186struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
187struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
188struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
189struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
190struct expr *expr_copy(const struct expr *org);
191void expr_free(struct expr *e);
192int expr_eq(struct expr *e1, struct expr *e2);
193void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
194tristate expr_calc_value(struct expr *e);
195struct expr *expr_eliminate_yn(struct expr *e);
196struct expr *expr_trans_bool(struct expr *e);
197struct expr *expr_eliminate_dups(struct expr *e);
198struct expr *expr_transform(struct expr *e);
199int expr_contains_symbol(struct expr *dep, struct symbol *sym);
200bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
201struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
202struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
203void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
204struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
205struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
206
207void expr_fprint(struct expr *e, FILE *out);
208struct gstr; /* forward */
209void expr_gstr_print(struct expr *e, struct gstr *gs);
210
211static inline int expr_is_yes(struct expr *e)
212{
213 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
214}
215
216static inline int expr_is_no(struct expr *e)
217{
218 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
219}
220
221#ifdef __cplusplus
222}
223#endif
224
225#endif /* EXPR_H */