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, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
42 union expr_data left, right;
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))
49 #define expr_list_for_each_sym(l, e, s) \
50 for (e = (l); e && (s = e->right.sym); e = e->left.expr)
63 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
66 /* enum values are used as index to symbol.def[] */
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 */
78 enum symbol_type type;
79 struct symbol_value curr;
80 struct symbol_value def[S_DEF_COUNT];
83 struct property *prop;
84 struct expr_value dir_dep;
85 struct expr_value rev_dep;
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)
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 /* ? */
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 */
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 */
109 #define SYMBOL_MAXLENGTH 256
110 #define SYMBOL_HASHSIZE 9973
112 /* A property represent the config options that can be associated
113 * with a config "symbol".
117 * prompt "foo prompt"
125 P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
126 P_COMMENT, /* text associated with a comment */
127 P_MENU, /* prompt associated with a menuconfig option */
128 P_DEFAULT, /* default y */
129 P_CHOICE, /* choice value */
130 P_SELECT, /* select BAR */
131 P_RANGE, /* range 7..100 (for a symbol) */
132 P_ENV, /* value from environment variable */
133 P_SYMBOL, /* where a symbol is defined */
137 struct property *next; /* next property - null if last */
138 struct symbol *sym; /* the symbol for which the property is associated */
139 enum prop_type type; /* type of property */
140 const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
141 struct expr_value visible;
142 struct expr *expr; /* the optional conditional part of the property */
143 struct menu *menu; /* the menu the property are associated with
144 * valid for: P_SELECT, P_RANGE, P_CHOICE,
145 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
146 struct file *file; /* what file was this property defined */
147 int lineno; /* what lineno was this property defined */
150 #define for_all_properties(sym, st, tok) \
151 for (st = sym->prop; st; st = st->next) \
152 if (st->type == (tok))
153 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
154 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
155 #define for_all_prompts(sym, st) \
156 for (st = sym->prop; st; st = st->next) \
164 struct property *prompt;
165 struct expr *visibility;
174 #define MENU_CHANGED 0x0001
175 #define MENU_ROOT 0x0002
178 struct list_head entries;
186 extern struct file *file_list;
187 extern struct file *current_file;
188 struct file *lookup_file(const char *name);
190 extern struct symbol symbol_yes, symbol_no, symbol_mod;
191 extern struct symbol *modules_sym;
192 extern struct symbol *sym_defconfig_list;
194 struct expr *expr_alloc_symbol(struct symbol *sym);
195 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
196 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
197 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
198 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
199 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
200 struct expr *expr_copy(const struct expr *org);
201 void expr_free(struct expr *e);
202 int expr_eq(struct expr *e1, struct expr *e2);
203 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
204 tristate expr_calc_value(struct expr *e);
205 struct expr *expr_eliminate_yn(struct expr *e);
206 struct expr *expr_trans_bool(struct expr *e);
207 struct expr *expr_eliminate_dups(struct expr *e);
208 struct expr *expr_transform(struct expr *e);
209 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
210 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
211 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
212 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
213 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
214 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
215 struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
217 void expr_fprint(struct expr *e, FILE *out);
218 struct gstr; /* forward */
219 void expr_gstr_print(struct expr *e, struct gstr *gs);
221 static inline int expr_is_yes(struct expr *e)
223 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
226 static inline int expr_is_no(struct expr *e)
228 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);