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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Arnaud Lacombe37ae2d52011-11-23 13:05:53 -050013#include <assert.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <stdio.h>
Benjamin Poirierbad99552012-10-21 05:27:53 -040015#include "list.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#ifndef __cplusplus
17#include <stdbool.h>
18#endif
19
20struct file {
21 struct file *next;
22 struct file *parent;
Arnaud Lacombe2e7a0912010-09-04 16:03:30 -040023 const char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 int lineno;
Linus Torvalds1da177e2005-04-16 15:20:36 -070025};
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027typedef enum tristate {
28 no, mod, yes
29} tristate;
30
31enum expr_type {
Roman Zippel7a962922008-01-14 04:50:23 +010032 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
Linus Torvalds1da177e2005-04-16 15:20:36 -070033};
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
Sam Ravnborgd6ee3572008-01-07 21:09:55 +010045#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))
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Roman Zippel7a962922008-01-14 04:50:23 +010049#define expr_list_for_each_sym(l, e, s) \
50 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052struct 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
Sam Ravnborgeaa2a872008-12-26 21:07:57 +010066/* enum values are used as index to symbol.def[] */
Roman Zippel0c1822e2006-06-08 22:12:41 -070067enum {
68 S_DEF_USER, /* main user value */
Sam Ravnborgeaa2a872008-12-26 21:07:57 +010069 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
Roman Zippel0c1822e2006-06-08 22:12:41 -070073};
74
Linus Torvalds1da177e2005-04-16 15:20:36 -070075struct symbol {
76 struct symbol *next;
77 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 enum symbol_type type;
Roman Zippel0c1822e2006-06-08 22:12:41 -070079 struct symbol_value curr;
Sam Ravnborgeaa2a872008-12-26 21:07:57 +010080 struct symbol_value def[S_DEF_COUNT];
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 tristate visible;
82 int flags;
83 struct property *prop;
Catalin Marinas246cf9c2010-06-08 17:25:57 +010084 struct expr_value dir_dep;
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 struct expr_value rev_dep;
86};
87
Andi Kleene66f25d2010-01-13 17:02:44 +010088#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)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Sam Ravnborg5b2cf362008-12-26 21:25:00 +010090#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 /* ? */
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -0700109/* choice values need to be set before calculating this symbol value */
110#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112#define SYMBOL_MAXLENGTH 256
Andi Kleene66f25d2010-01-13 17:02:44 +0100113#define SYMBOL_HASHSIZE 9973
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
Sam Ravnborgcf826072008-12-26 21:32:31 +0100115/* A property represent the config options that can be associated
116 * with a config "symbol".
117 * Sample:
118 * config FOO
119 * default y
120 * prompt "foo prompt"
121 * select BAR
122 * config BAZ
123 * int "BAZ Value"
124 * range 1..255
125 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126enum prop_type {
Sam Ravnborgcf826072008-12-26 21:32:31 +0100127 P_UNKNOWN,
128 P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
129 P_COMMENT, /* text associated with a comment */
130 P_MENU, /* prompt associated with a menuconfig option */
131 P_DEFAULT, /* default y */
132 P_CHOICE, /* choice value */
133 P_SELECT, /* select BAR */
134 P_RANGE, /* range 7..100 (for a symbol) */
135 P_ENV, /* value from environment variable */
Sam Ravnborg59e89e32010-07-31 23:35:29 +0200136 P_SYMBOL, /* where a symbol is defined */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137};
138
139struct property {
Sam Ravnborgcf826072008-12-26 21:32:31 +0100140 struct property *next; /* next property - null if last */
141 struct symbol *sym; /* the symbol for which the property is associated */
142 enum prop_type type; /* type of property */
143 const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 struct expr_value visible;
Sam Ravnborgcf826072008-12-26 21:32:31 +0100145 struct expr *expr; /* the optional conditional part of the property */
146 struct menu *menu; /* the menu the property are associated with
147 * valid for: P_SELECT, P_RANGE, P_CHOICE,
148 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
149 struct file *file; /* what file was this property defined */
150 int lineno; /* what lineno was this property defined */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151};
152
153#define for_all_properties(sym, st, tok) \
154 for (st = sym->prop; st; st = st->next) \
155 if (st->type == (tok))
156#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
157#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
158#define for_all_prompts(sym, st) \
159 for (st = sym->prop; st; st = st->next) \
160 if (st->text)
161
162struct menu {
163 struct menu *next;
164 struct menu *parent;
165 struct menu *list;
166 struct symbol *sym;
167 struct property *prompt;
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300168 struct expr *visibility;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 struct expr *dep;
170 unsigned int flags;
Sam Ravnborg03d29122007-07-21 00:00:36 +0200171 char *help;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 struct file *file;
173 int lineno;
174 void *data;
175};
176
177#define MENU_CHANGED 0x0001
178#define MENU_ROOT 0x0002
179
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400180struct jump_key {
Benjamin Poirierbad99552012-10-21 05:27:53 -0400181 struct list_head entries;
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400182 size_t offset;
183 struct menu *target;
184 int index;
185};
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400186
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400187#define JUMP_NB 9
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189extern struct file *file_list;
190extern struct file *current_file;
191struct file *lookup_file(const char *name);
192
193extern struct symbol symbol_yes, symbol_no, symbol_mod;
194extern struct symbol *modules_sym;
Roman Zippelface4372006-06-08 22:12:45 -0700195extern struct symbol *sym_defconfig_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196extern int cdebug;
197struct expr *expr_alloc_symbol(struct symbol *sym);
198struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
199struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
200struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
201struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
202struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
Michal Marek17742dc2010-12-20 16:06:44 +0100203struct expr *expr_copy(const struct expr *org);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204void expr_free(struct expr *e);
205int expr_eq(struct expr *e1, struct expr *e2);
206void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
207tristate expr_calc_value(struct expr *e);
208struct expr *expr_eliminate_yn(struct expr *e);
209struct expr *expr_trans_bool(struct expr *e);
210struct expr *expr_eliminate_dups(struct expr *e);
211struct expr *expr_transform(struct expr *e);
212int expr_contains_symbol(struct expr *dep, struct symbol *sym);
213bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
214struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
215struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
216void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
217struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
Arnaud Lacombe0597fcd2010-12-23 03:25:16 -0500218struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220void expr_fprint(struct expr *e, FILE *out);
221struct gstr; /* forward */
222void expr_gstr_print(struct expr *e, struct gstr *gs);
223
224static inline int expr_is_yes(struct expr *e)
225{
226 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
227}
228
229static inline int expr_is_no(struct expr *e)
230{
231 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
232}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
234#ifdef __cplusplus
235}
236#endif
237
238#endif /* EXPR_H */