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00006 #ifndef EXPR_H
00007 #define EXPR_H
00008
00009 #ifdef __cplusplus
00010 extern "C" {
00011 #endif
00012
00013 #include <stdio.h>
00014 #ifndef __cplusplus
00015 #include <stdbool.h>
00016 #endif
00017
00018 struct file {
00019 struct file *next;
00020 struct file *parent;
00021 char *name;
00022 int lineno;
00023 int flags;
00024 };
00025
00026 #define FILE_BUSY 0x0001
00027 #define FILE_SCANNED 0x0002
00028 #define FILE_PRINTED 0x0004
00029
00030 typedef enum tristate {
00031 no, mod, yes
00032 } tristate;
00033
00034 enum expr_type {
00035 E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE
00036 };
00037
00038 union expr_data {
00039 struct expr *expr;
00040 struct symbol *sym;
00041 };
00042
00043 struct expr {
00044 enum expr_type type;
00045 union expr_data left, right;
00046 };
00047
00048 #define E_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
00049 #define E_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
00050 #define E_NOT(dep) (2-(dep))
00051
00052 struct expr_value {
00053 struct expr *expr;
00054 tristate tri;
00055 };
00056
00057 struct symbol_value {
00058 void *val;
00059 tristate tri;
00060 };
00061
00062 enum symbol_type {
00063 S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
00064 };
00065
00066 struct symbol {
00067 struct symbol *next;
00068 char *name;
00069 char *help;
00070 enum symbol_type type;
00071 struct symbol_value curr, user;
00072 tristate visible;
00073 int flags;
00074 struct property *prop;
00075 struct expr *dep, *dep2;
00076 struct expr_value rev_dep;
00077 };
00078
00079 #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)
00080
00081 #define SYMBOL_YES 0x0001
00082 #define SYMBOL_MOD 0x0002
00083 #define SYMBOL_NO 0x0004
00084 #define SYMBOL_CONST 0x0007
00085 #define SYMBOL_CHECK 0x0008
00086 #define SYMBOL_CHOICE 0x0010
00087 #define SYMBOL_CHOICEVAL 0x0020
00088 #define SYMBOL_PRINTED 0x0040
00089 #define SYMBOL_VALID 0x0080
00090 #define SYMBOL_OPTIONAL 0x0100
00091 #define SYMBOL_WRITE 0x0200
00092 #define SYMBOL_CHANGED 0x0400
00093 #define SYMBOL_NEW 0x0800
00094 #define SYMBOL_AUTO 0x1000
00095 #define SYMBOL_CHECKED 0x2000
00096 #define SYMBOL_CHECK_DONE 0x4000
00097 #define SYMBOL_WARNED 0x8000
00098
00099 #define SYMBOL_MAXLENGTH 256
00100 #define SYMBOL_HASHSIZE 257
00101 #define SYMBOL_HASHMASK 0xff
00102
00103 enum prop_type {
00104 P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE
00105 };
00106
00107 struct property {
00108 struct property *next;
00109 struct symbol *sym;
00110 enum prop_type type;
00111 const char *text;
00112 struct expr_value visible;
00113 struct expr *expr;
00114 struct menu *menu;
00115 struct file *file;
00116 int lineno;
00117 };
00118
00119 #define for_all_properties(sym, st, tok) \
00120 for (st = sym->prop; st; st = st->next) \
00121 if (st->type == (tok))
00122 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
00123 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
00124 #define for_all_prompts(sym, st) \
00125 for (st = sym->prop; st; st = st->next) \
00126 if (st->text)
00127
00128 struct menu {
00129 struct menu *next;
00130 struct menu *parent;
00131 struct menu *list;
00132 struct symbol *sym;
00133 struct property *prompt;
00134 struct expr *dep;
00135 unsigned int flags;
00136
00137 struct file *file;
00138 int lineno;
00139 void *data;
00140 };
00141
00142 #define MENU_CHANGED 0x0001
00143 #define MENU_ROOT 0x0002
00144
00145 #ifndef SWIG
00146
00147 extern struct file *file_list;
00148 extern struct file *current_file;
00149 struct file *lookup_file(const char *name);
00150
00151 extern struct symbol symbol_yes, symbol_no, symbol_mod;
00152 extern struct symbol *modules_sym;
00153 extern int cdebug;
00154 struct expr *expr_alloc_symbol(struct symbol *sym);
00155 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
00156 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
00157 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
00158 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
00159 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
00160 struct expr *expr_copy(struct expr *org);
00161 void expr_free(struct expr *e);
00162 int expr_eq(struct expr *e1, struct expr *e2);
00163 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
00164 tristate expr_calc_value(struct expr *e);
00165 struct expr *expr_eliminate_yn(struct expr *e);
00166 struct expr *expr_trans_bool(struct expr *e);
00167 struct expr *expr_eliminate_dups(struct expr *e);
00168 struct expr *expr_transform(struct expr *e);
00169 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
00170 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
00171 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
00172 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
00173 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
00174 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
00175
00176 void expr_fprint(struct expr *e, FILE *out);
00177 void print_expr(int mask, struct expr *e, int prevtoken);
00178
00179 static inline int expr_is_yes(struct expr *e)
00180 {
00181 return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
00182 }
00183
00184 static inline int expr_is_no(struct expr *e)
00185 {
00186 return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
00187 }
00188 #endif
00189
00190 #ifdef __cplusplus
00191 }
00192 #endif
00193
00194 #endif