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 #define FILE_PRINTED 0x0004 29 30 typedef enum tristate { 31 no, mod, yes 32 } tristate; 33 34 enum expr_type { 35 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE 36 }; 37 38 union expr_data { 39 struct expr *expr; 40 struct symbol *sym; 41 }; 42 43 struct expr { 44 enum expr_type type; 45 union expr_data left, right; 46 }; 47 48 #define E_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) 49 #define E_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) 50 #define E_NOT(dep) (2-(dep)) 51 52 struct expr_value { 53 struct expr *expr; 54 tristate tri; 55 }; 56 57 struct symbol_value { 58 void *val; 59 tristate tri; 60 }; 61 62 enum symbol_type { 63 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER 64 }; 65 66 enum { 67 S_DEF_USER, /* main user value */ 68 S_DEF_AUTO, 69 }; 70 71 struct symbol { 72 struct symbol *next; 73 char *name; 74 char *help; 75 enum symbol_type type; 76 struct symbol_value curr; 77 struct symbol_value def[4]; 78 tristate visible; 79 int flags; 80 struct property *prop; 81 struct expr *dep, *dep2; 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_PRINTED 0x0040 92 #define SYMBOL_VALID 0x0080 93 #define SYMBOL_OPTIONAL 0x0100 94 #define SYMBOL_WRITE 0x0200 95 #define SYMBOL_CHANGED 0x0400 96 #define SYMBOL_AUTO 0x1000 97 #define SYMBOL_CHECKED 0x2000 98 #define SYMBOL_WARNED 0x8000 99 #define SYMBOL_DEF 0x10000 100 #define SYMBOL_DEF_USER 0x10000 101 #define SYMBOL_DEF_AUTO 0x20000 102 #define SYMBOL_DEF3 0x40000 103 #define SYMBOL_DEF4 0x80000 104 105 #define SYMBOL_MAXLENGTH 256 106 #define SYMBOL_HASHSIZE 257 107 #define SYMBOL_HASHMASK 0xff 108 109 enum prop_type { 110 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE 111 }; 112 113 struct property { 114 struct property *next; 115 struct symbol *sym; 116 enum prop_type type; 117 const char *text; 118 struct expr_value visible; 119 struct expr *expr; 120 struct menu *menu; 121 struct file *file; 122 int lineno; 123 }; 124 125 #define for_all_properties(sym, st, tok) \ 126 for (st = sym->prop; st; st = st->next) \ 127 if (st->type == (tok)) 128 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) 129 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) 130 #define for_all_prompts(sym, st) \ 131 for (st = sym->prop; st; st = st->next) \ 132 if (st->text) 133 134 struct menu { 135 struct menu *next; 136 struct menu *parent; 137 struct menu *list; 138 struct symbol *sym; 139 struct property *prompt; 140 struct expr *dep; 141 unsigned int flags; 142 //char *help; 143 struct file *file; 144 int lineno; 145 void *data; 146 }; 147 148 #define MENU_CHANGED 0x0001 149 #define MENU_ROOT 0x0002 150 151 #ifndef SWIG 152 153 extern struct file *file_list; 154 extern struct file *current_file; 155 struct file *lookup_file(const char *name); 156 157 extern struct symbol symbol_yes, symbol_no, symbol_mod; 158 extern struct symbol *modules_sym; 159 extern struct symbol *sym_defconfig_list; 160 extern int cdebug; 161 struct expr *expr_alloc_symbol(struct symbol *sym); 162 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 163 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 164 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 165 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 166 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 167 struct expr *expr_copy(struct expr *org); 168 void expr_free(struct expr *e); 169 int expr_eq(struct expr *e1, struct expr *e2); 170 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 171 tristate expr_calc_value(struct expr *e); 172 struct expr *expr_eliminate_yn(struct expr *e); 173 struct expr *expr_trans_bool(struct expr *e); 174 struct expr *expr_eliminate_dups(struct expr *e); 175 struct expr *expr_transform(struct expr *e); 176 int expr_contains_symbol(struct expr *dep, struct symbol *sym); 177 bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 178 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); 179 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); 180 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); 181 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 182 183 void expr_fprint(struct expr *e, FILE *out); 184 struct gstr; /* forward */ 185 void expr_gstr_print(struct expr *e, struct gstr *gs); 186 187 static inline int expr_is_yes(struct expr *e) 188 { 189 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 190 } 191 192 static inline int expr_is_no(struct expr *e) 193 { 194 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); 195 } 196 #endif 197 198 #ifdef __cplusplus 199 } 200 #endif 201 202 #endif /* EXPR_H */ 203