]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - scripts/kconfig/expr.h
1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
27 typedef enum tristate
{
32 E_NONE
, E_OR
, E_AND
, E_NOT
,
33 E_EQUAL
, E_UNEQUAL
, E_LTH
, E_LEQ
, E_GTH
, E_GEQ
,
34 E_LIST
, E_SYMBOL
, E_RANGE
44 union expr_data left
, right
;
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))
51 #define expr_list_for_each_sym(l, e, s) \
52 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
65 S_UNKNOWN
, S_BOOLEAN
, S_TRISTATE
, S_INT
, S_HEX
, S_STRING
68 /* enum values are used as index to symbol.def[] */
70 S_DEF_USER
, /* main user value */
71 S_DEF_AUTO
, /* values read from auto.conf */
72 S_DEF_DEF3
, /* Reserved for UI usage */
73 S_DEF_DEF4
, /* Reserved for UI usage */
78 * Represents a configuration symbol.
80 * Choices are represented as a special kind of symbol and have the
81 * SYMBOL_CHOICE bit set in 'flags'.
84 /* The next symbol in the same bucket in the symbol hash table */
87 /* The name of the symbol, e.g. "FOO" for 'config FOO' */
90 /* S_BOOLEAN, S_TRISTATE, ... */
91 enum symbol_type type
;
94 * The calculated value of the symbol. The SYMBOL_VALID bit is set in
95 * 'flags' when this is up to date. Note that this value might differ
96 * from the user value set in e.g. a .config file, due to visibility.
98 struct symbol_value curr
;
101 * Values for the symbol provided from outside. def[S_DEF_USER] holds
104 struct symbol_value def
[S_DEF_COUNT
];
107 * An upper bound on the tristate value the user can set for the symbol
108 * if it is a boolean or tristate. Calculated from prompt dependencies,
109 * which also inherit dependencies from enclosing menus, choices, and
110 * ifs. If 'n', the user value will be ignored.
112 * Symbols lacking prompts always have visibility 'n'.
119 /* List of properties. See prop_type. */
120 struct property
*prop
;
122 /* Dependencies from enclosing menus, choices, and ifs */
123 struct expr_value dir_dep
;
125 /* Reverse dependencies through being selected by other symbols */
126 struct expr_value rev_dep
;
129 * "Weak" reverse dependencies through being implied by other symbols
131 struct expr_value implied
;
134 #define for_all_symbols(i, sym) for (i = 0; i < SYMBOL_HASHSIZE; i++) for (sym = symbol_hash[i]; sym; sym = sym->next)
136 #define SYMBOL_CONST 0x0001 /* symbol is const */
137 #define SYMBOL_CHECK 0x0008 /* used during dependency checking */
138 #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
139 #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
140 #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
141 #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
142 #define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */
143 #define SYMBOL_CHANGED 0x0400 /* ? */
144 #define SYMBOL_WRITTEN 0x0800 /* track info to avoid double-write to .config */
145 #define SYMBOL_NO_WRITE 0x1000 /* Symbol for internal use only; it will not be written */
146 #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
147 #define SYMBOL_WARNED 0x8000 /* warning has been issued */
149 /* Set when symbol.def[] is used */
150 #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
151 #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
152 #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
153 #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
154 #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
156 /* choice values need to be set before calculating this symbol value */
157 #define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
159 /* Set symbol to y if allnoconfig; used for symbols that hide others */
160 #define SYMBOL_ALLNOCONFIG_Y 0x200000
162 #define SYMBOL_MAXLENGTH 256
163 #define SYMBOL_HASHSIZE 9973
165 /* A property represent the config options that can be associated
166 * with a config "symbol".
170 * prompt "foo prompt"
176 * Please, also check parser.y:print_symbol() when modifying the
177 * list of property types!
181 P_PROMPT
, /* prompt "foo prompt" or "BAZ Value" */
182 P_COMMENT
, /* text associated with a comment */
183 P_MENU
, /* prompt associated with a menu or menuconfig symbol */
184 P_DEFAULT
, /* default y */
185 P_CHOICE
, /* choice value */
186 P_SELECT
, /* select BAR */
187 P_IMPLY
, /* imply BAR */
188 P_RANGE
, /* range 7..100 (for a symbol) */
189 P_SYMBOL
, /* where a symbol is defined */
193 struct property
*next
; /* next property - null if last */
194 enum prop_type type
; /* type of property */
195 const char *text
; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
196 struct expr_value visible
;
197 struct expr
*expr
; /* the optional conditional part of the property */
198 struct menu
*menu
; /* the menu the property are associated with
199 * valid for: P_SELECT, P_RANGE, P_CHOICE,
200 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
201 struct file
*file
; /* what file was this property defined */
202 int lineno
; /* what lineno was this property defined */
205 #define for_all_properties(sym, st, tok) \
206 for (st = sym->prop; st; st = st->next) \
207 if (st->type == (tok))
208 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
209 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
210 #define for_all_prompts(sym, st) \
211 for (st = sym->prop; st; st = st->next) \
215 * Represents a node in the menu tree, as seen in e.g. menuconfig (though used
216 * for all front ends). Each symbol, menu, etc. defined in the Kconfig files
217 * gets a node. A symbol defined in multiple locations gets one node at each
221 /* The next menu node at the same level */
224 /* The parent menu node, corresponding to e.g. a menu or choice */
227 /* The first child menu node, for e.g. menus and choices */
231 * The symbol associated with the menu node. Choices are implemented as
232 * a special kind of symbol. NULL for menus, comments, and ifs.
237 * The prompt associated with the node. This holds the prompt for a
238 * symbol as well as the text for a menu or comment, along with the
239 * type (P_PROMPT, P_MENU, etc.)
241 struct property
*prompt
;
244 * 'visible if' dependencies. If more than one is given, they will be
247 struct expr
*visibility
;
250 * Ordinary dependencies from e.g. 'depends on' and 'if', ANDed
258 /* Any help text associated with the node */
261 /* The location where the menu node appears in the Kconfig files */
265 /* For use by front ends that need to store auxiliary data */
270 * Set on a menu node when the corresponding symbol changes state in some way.
271 * Can be checked by front ends.
273 #define MENU_CHANGED 0x0001
275 #define MENU_ROOT 0x0002
278 struct list_head entries
;
286 extern struct file
*file_list
;
287 extern struct file
*current_file
;
288 struct file
*lookup_file(const char *name
);
290 extern struct symbol symbol_yes
, symbol_no
, symbol_mod
;
291 extern struct symbol
*modules_sym
;
292 extern struct symbol
*sym_defconfig_list
;
294 struct expr
*expr_alloc_symbol(struct symbol
*sym
);
295 struct expr
*expr_alloc_one(enum expr_type type
, struct expr
*ce
);
296 struct expr
*expr_alloc_two(enum expr_type type
, struct expr
*e1
, struct expr
*e2
);
297 struct expr
*expr_alloc_comp(enum expr_type type
, struct symbol
*s1
, struct symbol
*s2
);
298 struct expr
*expr_alloc_and(struct expr
*e1
, struct expr
*e2
);
299 struct expr
*expr_alloc_or(struct expr
*e1
, struct expr
*e2
);
300 struct expr
*expr_copy(const struct expr
*org
);
301 void expr_free(struct expr
*e
);
302 void expr_eliminate_eq(struct expr
**ep1
, struct expr
**ep2
);
303 int expr_eq(struct expr
*e1
, struct expr
*e2
);
304 tristate
expr_calc_value(struct expr
*e
);
305 struct expr
*expr_trans_bool(struct expr
*e
);
306 struct expr
*expr_eliminate_dups(struct expr
*e
);
307 struct expr
*expr_transform(struct expr
*e
);
308 int expr_contains_symbol(struct expr
*dep
, struct symbol
*sym
);
309 bool expr_depends_symbol(struct expr
*dep
, struct symbol
*sym
);
310 struct expr
*expr_trans_compare(struct expr
*e
, enum expr_type type
, struct symbol
*sym
);
312 void expr_fprint(struct expr
*e
, FILE *out
);
313 struct gstr
; /* forward */
314 void expr_gstr_print(struct expr
*e
, struct gstr
*gs
);
315 void expr_gstr_print_revdep(struct expr
*e
, struct gstr
*gs
,
316 tristate pr_type
, const char *title
);
318 static inline int expr_is_yes(struct expr
*e
)
320 return !e
|| (e
->type
== E_SYMBOL
&& e
->left
.sym
== &symbol_yes
);
323 static inline int expr_is_no(struct expr
*e
)
325 return e
&& (e
->type
== E_SYMBOL
&& e
->left
.sym
== &symbol_no
);