2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
26 #define FILE_BUSY 0x0001
27 #define FILE_SCANNED 0x0002
29 typedef enum tristate {
34 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, 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 rev_dep;
89 #define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
91 #define SYMBOL_CONST 0x0001 /* symbol is const */
92 #define SYMBOL_CHECK 0x0008 /* used during dependency checking */
93 #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
94 #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
95 #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
96 #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
97 #define SYMBOL_WRITE 0x0200 /* ? */
98 #define SYMBOL_CHANGED 0x0400 /* ? */
99 #define SYMBOL_AUTO 0x1000 /* value from environment variable */
100 #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
101 #define SYMBOL_WARNED 0x8000 /* warning has been issued */
103 /* Set when symbol.def[] is used */
104 #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
105 #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
106 #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
107 #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
108 #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
110 #define SYMBOL_MAXLENGTH 256
111 #define SYMBOL_HASHSIZE 257
112 #define SYMBOL_HASHMASK 0xff
115 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,
116 P_SELECT, P_RANGE, P_ENV
120 struct property *next;
124 struct expr_value visible;
131 #define for_all_properties(sym, st, tok) \
132 for (st = sym->prop; st; st = st->next) \
133 if (st->type == (tok))
134 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
135 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
136 #define for_all_prompts(sym, st) \
137 for (st = sym->prop; st; st = st->next) \
145 struct property *prompt;
154 #define MENU_CHANGED 0x0001
155 #define MENU_ROOT 0x0002
159 extern struct file *file_list;
160 extern struct file *current_file;
161 struct file *lookup_file(const char *name);
163 extern struct symbol symbol_yes, symbol_no, symbol_mod;
164 extern struct symbol *modules_sym;
165 extern struct symbol *sym_defconfig_list;
167 struct expr *expr_alloc_symbol(struct symbol *sym);
168 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
169 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
170 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
171 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
172 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
173 struct expr *expr_copy(struct expr *org);
174 void expr_free(struct expr *e);
175 int expr_eq(struct expr *e1, struct expr *e2);
176 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
177 tristate expr_calc_value(struct expr *e);
178 struct expr *expr_eliminate_yn(struct expr *e);
179 struct expr *expr_trans_bool(struct expr *e);
180 struct expr *expr_eliminate_dups(struct expr *e);
181 struct expr *expr_transform(struct expr *e);
182 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
183 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
184 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
185 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
186 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
187 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
189 void expr_fprint(struct expr *e, FILE *out);
190 struct gstr; /* forward */
191 void expr_gstr_print(struct expr *e, struct gstr *gs);
193 static inline int expr_is_yes(struct expr *e)
195 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
198 static inline int expr_is_no(struct expr *e)
200 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);