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 10extern "C" { 11#endif 12 13#include <stdio.h> 14#ifndef __cplusplus 15#include <stdbool.h> 16#endif 17 18struct 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 30typedef enum tristate { 31 no, mod, yes 32} tristate; 33 34enum expr_type { 35 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE 36}; 37 38union expr_data { 39 struct expr *expr; 40 struct symbol *sym; 41}; 42 43struct 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 52struct expr_value { 53 struct expr *expr; 54 tristate tri; 55}; 56 57struct symbol_value { 58 void *val; 59 tristate tri; 60}; 61 62enum symbol_type { 63 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER 64}; 65 66struct 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 102enum prop_type { 103 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE 104}; 105 106struct 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 127struct 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 146extern struct file *file_list; 147extern struct file *current_file; 148struct file *lookup_file(const char *name); 149 150extern struct symbol symbol_yes, symbol_no, symbol_mod; 151extern struct symbol *modules_sym; 152extern int cdebug; 153struct expr *expr_alloc_symbol(struct symbol *sym); 154struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); 155struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); 156struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); 157struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); 158struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); 159struct expr *expr_copy(struct expr *org); 160void expr_free(struct expr *e); 161int expr_eq(struct expr *e1, struct expr *e2); 162void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); 163tristate expr_calc_value(struct expr *e); 164struct expr *expr_eliminate_yn(struct expr *e); 165struct expr *expr_trans_bool(struct expr *e); 166struct expr *expr_eliminate_dups(struct expr *e); 167struct expr *expr_transform(struct expr *e); 168int expr_contains_symbol(struct expr *dep, struct symbol *sym); 169bool expr_depends_symbol(struct expr *dep, struct symbol *sym); 170struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); 171struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); 172void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); 173struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); 174 175void expr_fprint(struct expr *e, FILE *out); 176struct gstr; /* forward */ 177void expr_gstr_print(struct expr *e, struct gstr *gs); 178 179static inline int expr_is_yes(struct expr *e) 180{ 181 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); 182} 183 184static 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