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 <assert.h> 14 #include <stdio.h> 15 #include "list.h" 16 #ifndef __cplusplus 17 #include <stdbool.h> 18 #endif 19 20 struct file { 21 struct file *next; 22 struct file *parent; 23 const char *name; 24 int lineno; 25 }; 26 27 typedef enum tristate { 28 no, mod, yes 29 } tristate; 30 31 enum expr_type { 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 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 values are used as index to symbol.def[] */ 69 enum { 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 */ 74 S_DEF_COUNT 75 }; 76 77 struct symbol { 78 struct symbol *next; 79 char *name; 80 enum symbol_type type; 81 struct symbol_value curr; 82 struct symbol_value def[S_DEF_COUNT]; 83 tristate visible; 84 int flags; 85 struct property *prop; 86 struct expr_value dir_dep; 87 struct expr_value rev_dep; 88 }; 89 90 #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) 91 92 #define SYMBOL_CONST 0x0001 /* symbol is const */ 93 #define SYMBOL_CHECK 0x0008 /* used during dependency checking */ 94 #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */ 95 #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */ 96 #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */ 97 #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */ 98 #define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */ 99 #define SYMBOL_CHANGED 0x0400 /* ? */ 100 #define SYMBOL_AUTO 0x1000 /* value from environment variable */ 101 #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */ 102 #define SYMBOL_WARNED 0x8000 /* warning has been issued */ 103 104 /* Set when symbol.def[] is used */ 105 #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */ 106 #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */ 107 #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */ 108 #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */ 109 #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */ 110 111 /* choice values need to be set before calculating this symbol value */ 112 #define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000 113 114 /* Set symbol to y if allnoconfig; used for symbols that hide others */ 115 #define SYMBOL_ALLNOCONFIG_Y 0x200000 116 117 #define SYMBOL_MAXLENGTH 256 118 #define SYMBOL_HASHSIZE 9973 119 120 /* A property represent the config options that can be associated 121 * with a config "symbol". 122 * Sample: 123 * config FOO 124 * default y 125 * prompt "foo prompt" 126 * select BAR 127 * config BAZ 128 * int "BAZ Value" 129 * range 1..255 130 */ 131 enum prop_type { 132 P_UNKNOWN, 133 P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */ 134 P_COMMENT, /* text associated with a comment */ 135 P_MENU, /* prompt associated with a menuconfig option */ 136 P_DEFAULT, /* default y */ 137 P_CHOICE, /* choice value */ 138 P_SELECT, /* select BAR */ 139 P_RANGE, /* range 7..100 (for a symbol) */ 140 P_ENV, /* value from environment variable */ 141 P_SYMBOL, /* where a symbol is defined */ 142 }; 143 144 struct property { 145 struct property *next; /* next property - null if last */ 146 struct symbol *sym; /* the symbol for which the property is associated */ 147 enum prop_type type; /* type of property */ 148 const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */ 149 struct expr_value visible; 150 struct expr *expr; /* the optional conditional part of the property */ 151 struct menu *menu; /* the menu the property are associated with 152 * valid for: P_SELECT, P_RANGE, P_CHOICE, 153 * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */ 154 struct file *file; /* what file was this property defined */ 155 int lineno; /* what lineno was this property defined */ 156 }; 157 158 #define for_all_properties(sym, st, tok) \ 159 for (st = sym->prop; st; st = st->next) \ 160 if (st->type == (tok)) 161 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) 162 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) 163 #define for_all_prompts(sym, st) \ 164 for (st = sym->prop; st; st = st->next) \ 165 if (st->text) 166 167 struct menu { 168 struct menu *next; 169 struct menu *parent; 170 struct menu *list; 171 struct symbol *sym; 172 struct property *prompt; 173 struct expr *visibility; 174 struct expr *dep; 175 unsigned int flags; 176 char *help; 177 struct file *file; 178 int lineno; 179 void *data; 180 }; 181 182 #define MENU_CHANGED 0x0001 183 #define MENU_ROOT 0x0002 184 185 struct jump_key { 186 struct list_head entries; 187 size_t offset; 188 struct menu *target; 189 int index; 190 }; 191 192 #define JUMP_NB 9 193 194 extern struct file *file_list; 195 extern struct file *current_file; 196 struct file *lookup_file(const char *name); 197 198 extern struct symbol symbol_yes, symbol_no, symbol_mod; 199 extern struct symbol *modules_sym; 200 extern struct symbol *sym_defconfig_list; 201 extern int cdebug; 202 struct expr *expr_alloc_symbol(struct symbol *sym); 203 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 204 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 205 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 206 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 207 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 208 struct expr *expr_copy(const struct expr *org); 209 void expr_free(struct expr *e); 210 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 211 tristate expr_calc_value(struct expr *e); 212 struct expr *expr_trans_bool(struct expr *e); 213 struct expr *expr_eliminate_dups(struct expr *e); 214 struct expr *expr_transform(struct expr *e); 215 int expr_contains_symbol(struct expr *dep, struct symbol *sym); 216 bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 217 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 218 struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2); 219 220 void expr_fprint(struct expr *e, FILE *out); 221 struct gstr; /* forward */ 222 void expr_gstr_print(struct expr *e, struct gstr *gs); 223 224 static inline int expr_is_yes(struct expr *e) 225 { 226 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 227 } 228 229 static inline int expr_is_no(struct expr *e) 230 { 231 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); 232 } 233 234 #ifdef __cplusplus 235 } 236 #endif 237 238 #endif /* EXPR_H */ 239