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_YES 0x0001 82 #define SYMBOL_MOD 0x0002 83 #define SYMBOL_NO 0x0004 84 #define SYMBOL_CONST 0x0007 85 #define SYMBOL_CHECK 0x0008 86 #define SYMBOL_CHOICE 0x0010 87 #define SYMBOL_CHOICEVAL 0x0020 88 #define SYMBOL_PRINTED 0x0040 89 #define SYMBOL_VALID 0x0080 90 #define SYMBOL_OPTIONAL 0x0100 91 #define SYMBOL_WRITE 0x0200 92 #define SYMBOL_CHANGED 0x0400 93 #define SYMBOL_NEW 0x0800 94 #define SYMBOL_AUTO 0x1000 95 #define SYMBOL_CHECKED 0x2000 96 #define SYMBOL_WARNED 0x8000 97 98 #define SYMBOL_MAXLENGTH 256 99 #define SYMBOL_HASHSIZE 257 100 #define SYMBOL_HASHMASK 0xff 101 102 enum prop_type { 103 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE 104 }; 105 106 struct property { 107 struct property *next; 108 struct symbol *sym; 109 enum prop_type type; 110 const char *text; 111 struct expr_value visible; 112 struct expr *expr; 113 struct menu *menu; 114 struct file *file; 115 int lineno; 116 }; 117 118 #define for_all_properties(sym, st, tok) \ 119 for (st = sym->prop; st; st = st->next) \ 120 if (st->type == (tok)) 121 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) 122 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) 123 #define for_all_prompts(sym, st) \ 124 for (st = sym->prop; st; st = st->next) \ 125 if (st->text) 126 127 struct menu { 128 struct menu *next; 129 struct menu *parent; 130 struct menu *list; 131 struct symbol *sym; 132 struct property *prompt; 133 struct expr *dep; 134 unsigned int flags; 135 //char *help; 136 struct file *file; 137 int lineno; 138 void *data; 139 }; 140 141 #define MENU_CHANGED 0x0001 142 #define MENU_ROOT 0x0002 143 144 #ifndef SWIG 145 146 extern struct file *file_list; 147 extern struct file *current_file; 148 struct file *lookup_file(const char *name); 149 150 extern struct symbol symbol_yes, symbol_no, symbol_mod; 151 extern struct symbol *modules_sym; 152 extern int cdebug; 153 struct expr *expr_alloc_symbol(struct symbol *sym); 154 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 155 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 156 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 157 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 158 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 159 struct expr *expr_copy(struct expr *org); 160 void expr_free(struct expr *e); 161 int expr_eq(struct expr *e1, struct expr *e2); 162 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 163 tristate expr_calc_value(struct expr *e); 164 struct expr *expr_eliminate_yn(struct expr *e); 165 struct expr *expr_trans_bool(struct expr *e); 166 struct expr *expr_eliminate_dups(struct expr *e); 167 struct expr *expr_transform(struct expr *e); 168 int expr_contains_symbol(struct expr *dep, struct symbol *sym); 169 bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 170 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); 171 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); 172 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); 173 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 174 175 void expr_fprint(struct expr *e, FILE *out); 176 struct gstr; /* forward */ 177 void expr_gstr_print(struct expr *e, struct gstr *gs); 178 179 static inline int expr_is_yes(struct expr *e) 180 { 181 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 182 } 183 184 static inline int expr_is_no(struct expr *e) 185 { 186 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); 187 } 188 #endif 189 190 #ifdef __cplusplus 191 } 192 #endif 193 194 #endif /* EXPR_H */ 195