2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
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, S_OTHER
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 */
80 enum symbol_type type;
81 struct symbol_value curr;
82 struct symbol_value def[S_DEF_COUNT];
85 struct property *prop;
86 struct expr_value dir_dep;
87 struct expr_value rev_dep;
88 struct expr_value implied;
91 #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)
93 #define SYMBOL_CONST 0x0001 /* symbol is const */
94 #define SYMBOL_CHECK 0x0008 /* used during dependency checking */
95 #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
96 #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
97 #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
98 #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
99 #define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */
100 #define SYMBOL_CHANGED 0x0400 /* ? */
101 #define SYMBOL_AUTO 0x1000 /* value from environment variable */
102 #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
103 #define SYMBOL_WARNED 0x8000 /* warning has been issued */
105 /* Set when symbol.def[] is used */
106 #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
107 #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
108 #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
109 #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
110 #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
112 /* choice values need to be set before calculating this symbol value */
113 #define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
115 /* Set symbol to y if allnoconfig; used for symbols that hide others */
116 #define SYMBOL_ALLNOCONFIG_Y 0x200000
118 #define SYMBOL_MAXLENGTH 256
119 #define SYMBOL_HASHSIZE 9973
121 /* A property represent the config options that can be associated
122 * with a config "symbol".
126 * prompt "foo prompt"
134 P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
135 P_COMMENT, /* text associated with a comment */
136 P_MENU, /* prompt associated with a menuconfig option */
137 P_DEFAULT, /* default y */
138 P_CHOICE, /* choice value */
139 P_SELECT, /* select BAR */
140 P_IMPLY, /* imply BAR */
141 P_RANGE, /* range 7..100 (for a symbol) */
142 P_ENV, /* value from environment variable */
143 P_SYMBOL, /* where a symbol is defined */
147 struct property *next; /* next property - null if last */
148 struct symbol *sym; /* the symbol for which the property is associated */
149 enum prop_type type; /* type of property */
150 const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
151 struct expr_value visible;
152 struct expr *expr; /* the optional conditional part of the property */
153 struct menu *menu; /* the menu the property are associated with
154 * valid for: P_SELECT, P_RANGE, P_CHOICE,
155 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
156 struct file *file; /* what file was this property defined */
157 int lineno; /* what lineno was this property defined */
160 #define for_all_properties(sym, st, tok) \
161 for (st = sym->prop; st; st = st->next) \
162 if (st->type == (tok))
163 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
164 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
165 #define for_all_prompts(sym, st) \
166 for (st = sym->prop; st; st = st->next) \
170 * Represents a node in the menu tree, as seen in e.g. menuconfig (though used
171 * for all front ends). Each symbol, menu, etc. defined in the Kconfig files
172 * gets a node. A symbol defined in multiple locations gets one node at each
176 /* The next menu node at the same level */
179 /* The parent menu node, corresponding to e.g. a menu or choice */
182 /* The first child menu node, for e.g. menus and choices */
186 * The symbol associated with the menu node. Choices are implemented as
187 * a special kind of symbol. NULL for menus, comments, and ifs.
192 * The prompt associated with the node. This holds the prompt for a
193 * symbol as well as the text for a menu or comment, along with the
194 * type (P_PROMPT, P_MENU, etc.)
196 struct property *prompt;
199 * 'visible if' dependencies. If more than one is given, they will be
202 struct expr *visibility;
205 * Ordinary dependencies from e.g. 'depends on' and 'if', ANDed
213 /* Any help text associated with the node */
216 /* The location where the menu node appears in the Kconfig files */
220 /* For use by front ends that need to store auxiliary data */
225 * Set on a menu node when the corresponding symbol changes state in some way.
226 * Can be checked by front ends.
228 #define MENU_CHANGED 0x0001
230 #define MENU_ROOT 0x0002
233 struct list_head entries;
241 extern struct file *file_list;
242 extern struct file *current_file;
243 struct file *lookup_file(const char *name);
245 extern struct symbol symbol_yes, symbol_no, symbol_mod;
246 extern struct symbol *modules_sym;
247 extern struct symbol *sym_defconfig_list;
249 struct expr *expr_alloc_symbol(struct symbol *sym);
250 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
251 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
252 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
253 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
254 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
255 struct expr *expr_copy(const struct expr *org);
256 void expr_free(struct expr *e);
257 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
258 tristate expr_calc_value(struct expr *e);
259 struct expr *expr_trans_bool(struct expr *e);
260 struct expr *expr_eliminate_dups(struct expr *e);
261 struct expr *expr_transform(struct expr *e);
262 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
263 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
264 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
265 struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
267 void expr_fprint(struct expr *e, FILE *out);
268 struct gstr; /* forward */
269 void expr_gstr_print(struct expr *e, struct gstr *gs);
271 static inline int expr_is_yes(struct expr *e)
273 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
276 static inline int expr_is_no(struct expr *e)
278 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);