1 /* 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 10 extern "C" { 11 #endif 12 13 #include <stdio.h> 14 #ifndef __cplusplus 15 #include <stdbool.h> 16 #endif 17 18 struct file { 19 struct file *next; 20 struct file *parent; 21 char *name; 22 int lineno; 23 int flags; 24 }; 25 26 #define FILE_BUSY 0x0001 27 #define FILE_SCANNED 0x0002 28 29 typedef enum tristate { 30 no, mod, yes 31 } tristate; 32 33 enum expr_type { 34 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE 35 }; 36 37 union expr_data { 38 struct expr *expr; 39 struct symbol *sym; 40 }; 41 42 struct expr { 43 enum expr_type type; 44 union expr_data left, right; 45 }; 46 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)) 50 51 #define expr_list_for_each_sym(l, e, s) \ 52 for (e = (l); e && (s = e->right.sym); e = e->left.expr) 53 54 struct expr_value { 55 struct expr *expr; 56 tristate tri; 57 }; 58 59 struct symbol_value { 60 void *val; 61 tristate tri; 62 }; 63 64 enum symbol_type { 65 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER 66 }; 67 68 enum { 69 S_DEF_USER, /* main user value */ 70 S_DEF_AUTO, 71 }; 72 73 struct symbol { 74 struct symbol *next; 75 char *name; 76 enum symbol_type type; 77 struct symbol_value curr; 78 struct symbol_value def[4]; 79 tristate visible; 80 int flags; 81 struct property *prop; 82 struct expr_value rev_dep; 83 }; 84 85 #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) 86 87 #define SYMBOL_CONST 0x0001 88 #define SYMBOL_CHECK 0x0008 89 #define SYMBOL_CHOICE 0x0010 90 #define SYMBOL_CHOICEVAL 0x0020 91 #define SYMBOL_VALID 0x0080 92 #define SYMBOL_OPTIONAL 0x0100 93 #define SYMBOL_WRITE 0x0200 94 #define SYMBOL_CHANGED 0x0400 95 #define SYMBOL_AUTO 0x1000 96 #define SYMBOL_CHECKED 0x2000 97 #define SYMBOL_WARNED 0x8000 98 #define SYMBOL_DEF 0x10000 99 #define SYMBOL_DEF_USER 0x10000 100 #define SYMBOL_DEF_AUTO 0x20000 101 #define SYMBOL_DEF3 0x40000 102 #define SYMBOL_DEF4 0x80000 103 104 #define SYMBOL_MAXLENGTH 256 105 #define SYMBOL_HASHSIZE 257 106 #define SYMBOL_HASHMASK 0xff 107 108 enum prop_type { 109 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE 110 }; 111 112 struct property { 113 struct property *next; 114 struct symbol *sym; 115 enum prop_type type; 116 const char *text; 117 struct expr_value visible; 118 struct expr *expr; 119 struct menu *menu; 120 struct file *file; 121 int lineno; 122 }; 123 124 #define for_all_properties(sym, st, tok) \ 125 for (st = sym->prop; st; st = st->next) \ 126 if (st->type == (tok)) 127 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) 128 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) 129 #define for_all_prompts(sym, st) \ 130 for (st = sym->prop; st; st = st->next) \ 131 if (st->text) 132 133 struct menu { 134 struct menu *next; 135 struct menu *parent; 136 struct menu *list; 137 struct symbol *sym; 138 struct property *prompt; 139 struct expr *dep; 140 unsigned int flags; 141 char *help; 142 struct file *file; 143 int lineno; 144 void *data; 145 }; 146 147 #define MENU_CHANGED 0x0001 148 #define MENU_ROOT 0x0002 149 150 #ifndef SWIG 151 152 extern struct file *file_list; 153 extern struct file *current_file; 154 struct file *lookup_file(const char *name); 155 156 extern struct symbol symbol_yes, symbol_no, symbol_mod; 157 extern struct symbol *modules_sym; 158 extern struct symbol *sym_defconfig_list; 159 extern int cdebug; 160 struct expr *expr_alloc_symbol(struct symbol *sym); 161 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 162 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 163 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 164 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 165 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 166 struct expr *expr_copy(struct expr *org); 167 void expr_free(struct expr *e); 168 int expr_eq(struct expr *e1, struct expr *e2); 169 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 170 tristate expr_calc_value(struct expr *e); 171 struct expr *expr_eliminate_yn(struct expr *e); 172 struct expr *expr_trans_bool(struct expr *e); 173 struct expr *expr_eliminate_dups(struct expr *e); 174 struct expr *expr_transform(struct expr *e); 175 int expr_contains_symbol(struct expr *dep, struct symbol *sym); 176 bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 177 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); 178 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); 179 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); 180 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 181 182 void expr_fprint(struct expr *e, FILE *out); 183 struct gstr; /* forward */ 184 void expr_gstr_print(struct expr *e, struct gstr *gs); 185 186 static inline int expr_is_yes(struct expr *e) 187 { 188 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 189 } 190 191 static inline int expr_is_no(struct expr *e) 192 { 193 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); 194 } 195 #endif 196 197 #ifdef __cplusplus 198 } 199 #endif 200 201 #endif /* EXPR_H */ 202