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 struct symbol { 67 struct symbol *next; 68 char *name; 69 char *help; 70 enum symbol_type type; 71 struct symbol_value curr, user; 72 tristate visible; 73 int flags; 74 struct property *prop; 75 struct expr *dep, *dep2; 76 struct expr_value rev_dep; 77 }; 78 79 #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) 80 81 #define SYMBOL_CONST 0x0001 82 #define SYMBOL_CHECK 0x0008 83 #define SYMBOL_CHOICE 0x0010 84 #define SYMBOL_CHOICEVAL 0x0020 85 #define SYMBOL_PRINTED 0x0040 86 #define SYMBOL_VALID 0x0080 87 #define SYMBOL_OPTIONAL 0x0100 88 #define SYMBOL_WRITE 0x0200 89 #define SYMBOL_CHANGED 0x0400 90 #define SYMBOL_NEW 0x0800 91 #define SYMBOL_AUTO 0x1000 92 #define SYMBOL_CHECKED 0x2000 93 #define SYMBOL_WARNED 0x8000 94 95 #define SYMBOL_MAXLENGTH 256 96 #define SYMBOL_HASHSIZE 257 97 #define SYMBOL_HASHMASK 0xff 98 99 enum prop_type { 100 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE 101 }; 102 103 struct property { 104 struct property *next; 105 struct symbol *sym; 106 enum prop_type type; 107 const char *text; 108 struct expr_value visible; 109 struct expr *expr; 110 struct menu *menu; 111 struct file *file; 112 int lineno; 113 }; 114 115 #define for_all_properties(sym, st, tok) \ 116 for (st = sym->prop; st; st = st->next) \ 117 if (st->type == (tok)) 118 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) 119 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) 120 #define for_all_prompts(sym, st) \ 121 for (st = sym->prop; st; st = st->next) \ 122 if (st->text) 123 124 struct menu { 125 struct menu *next; 126 struct menu *parent; 127 struct menu *list; 128 struct symbol *sym; 129 struct property *prompt; 130 struct expr *dep; 131 unsigned int flags; 132 //char *help; 133 struct file *file; 134 int lineno; 135 void *data; 136 }; 137 138 #define MENU_CHANGED 0x0001 139 #define MENU_ROOT 0x0002 140 141 #ifndef SWIG 142 143 extern struct file *file_list; 144 extern struct file *current_file; 145 struct file *lookup_file(const char *name); 146 147 extern struct symbol symbol_yes, symbol_no, symbol_mod; 148 extern struct symbol *modules_sym; 149 extern int cdebug; 150 struct expr *expr_alloc_symbol(struct symbol *sym); 151 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 152 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 153 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 154 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 155 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 156 struct expr *expr_copy(struct expr *org); 157 void expr_free(struct expr *e); 158 int expr_eq(struct expr *e1, struct expr *e2); 159 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 160 tristate expr_calc_value(struct expr *e); 161 struct expr *expr_eliminate_yn(struct expr *e); 162 struct expr *expr_trans_bool(struct expr *e); 163 struct expr *expr_eliminate_dups(struct expr *e); 164 struct expr *expr_transform(struct expr *e); 165 int expr_contains_symbol(struct expr *dep, struct symbol *sym); 166 bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 167 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); 168 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); 169 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); 170 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 171 172 void expr_fprint(struct expr *e, FILE *out); 173 struct gstr; /* forward */ 174 void expr_gstr_print(struct expr *e, struct gstr *gs); 175 176 static inline int expr_is_yes(struct expr *e) 177 { 178 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 179 } 180 181 static inline int expr_is_no(struct expr *e) 182 { 183 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); 184 } 185 #endif 186 187 #ifdef __cplusplus 188 } 189 #endif 190 191 #endif /* EXPR_H */ 192