Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 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 | #ifndef __sun |
| 16 | #include <stdbool.h> |
| 17 | #else |
| 18 | typedef short bool; |
| 19 | enum { true=1, false=0}; |
| 20 | #endif |
| 21 | #endif |
| 22 | |
| 23 | struct file { |
| 24 | struct file *next; |
| 25 | struct file *parent; |
| 26 | char *name; |
| 27 | int lineno; |
| 28 | int flags; |
| 29 | }; |
| 30 | |
| 31 | #define FILE_BUSY 0x0001 |
| 32 | #define FILE_SCANNED 0x0002 |
| 33 | |
| 34 | typedef enum tristate { |
| 35 | no, mod, yes |
| 36 | } tristate; |
| 37 | |
| 38 | enum expr_type { |
| 39 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE |
| 40 | }; |
| 41 | |
| 42 | union expr_data { |
| 43 | struct expr *expr; |
| 44 | struct symbol *sym; |
| 45 | }; |
| 46 | |
| 47 | struct expr { |
| 48 | enum expr_type type; |
| 49 | union expr_data left, right; |
| 50 | }; |
| 51 | |
| 52 | #define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) |
| 53 | #define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) |
| 54 | #define EXPR_NOT(dep) (2-(dep)) |
| 55 | |
| 56 | #define expr_list_for_each_sym(l, e, s) \ |
| 57 | for (e = (l); e && (s = e->right.sym); e = e->left.expr) |
| 58 | |
| 59 | struct expr_value { |
| 60 | struct expr *expr; |
| 61 | tristate tri; |
| 62 | }; |
| 63 | |
| 64 | struct symbol_value { |
| 65 | void *val; |
| 66 | tristate tri; |
| 67 | }; |
| 68 | |
| 69 | enum symbol_type { |
| 70 | S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER |
| 71 | }; |
| 72 | |
| 73 | enum { |
| 74 | S_DEF_USER, /* main user value */ |
| 75 | S_DEF_AUTO, |
| 76 | }; |
| 77 | |
| 78 | struct symbol { |
| 79 | struct symbol *next; |
| 80 | char *name; |
| 81 | enum symbol_type type; |
| 82 | struct symbol_value curr; |
| 83 | struct symbol_value def[4]; |
| 84 | tristate visible; |
| 85 | int flags; |
| 86 | struct property *prop; |
| 87 | struct expr_value rev_dep; |
| 88 | }; |
| 89 | |
| 90 | #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) |
| 91 | |
| 92 | #define SYMBOL_CONST 0x0001 |
| 93 | #define SYMBOL_CHECK 0x0008 |
| 94 | #define SYMBOL_CHOICE 0x0010 |
| 95 | #define SYMBOL_CHOICEVAL 0x0020 |
| 96 | #define SYMBOL_VALID 0x0080 |
| 97 | #define SYMBOL_OPTIONAL 0x0100 |
| 98 | #define SYMBOL_WRITE 0x0200 |
| 99 | #define SYMBOL_CHANGED 0x0400 |
| 100 | #define SYMBOL_AUTO 0x1000 |
| 101 | #define SYMBOL_CHECKED 0x2000 |
| 102 | #define SYMBOL_WARNED 0x8000 |
| 103 | #define SYMBOL_DEF 0x10000 |
| 104 | #define SYMBOL_DEF_USER 0x10000 |
| 105 | #define SYMBOL_DEF_AUTO 0x20000 |
| 106 | #define SYMBOL_DEF3 0x40000 |
| 107 | #define SYMBOL_DEF4 0x80000 |
| 108 | |
| 109 | #define SYMBOL_MAXLENGTH 256 |
| 110 | #define SYMBOL_HASHSIZE 257 |
| 111 | #define SYMBOL_HASHMASK 0xff |
| 112 | |
| 113 | enum prop_type { |
| 114 | P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, |
| 115 | P_SELECT, P_RANGE, P_ENV |
| 116 | }; |
| 117 | |
| 118 | struct property { |
| 119 | struct property *next; |
| 120 | struct symbol *sym; |
| 121 | enum prop_type type; |
| 122 | const char *text; |
| 123 | struct expr_value visible; |
| 124 | struct expr *expr; |
| 125 | struct menu *menu; |
| 126 | struct file *file; |
| 127 | int lineno; |
| 128 | }; |
| 129 | |
| 130 | #define for_all_properties(sym, st, tok) \ |
| 131 | for (st = sym->prop; st; st = st->next) \ |
| 132 | if (st->type == (tok)) |
| 133 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) |
| 134 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) |
| 135 | #define for_all_prompts(sym, st) \ |
| 136 | for (st = sym->prop; st; st = st->next) \ |
| 137 | if (st->text) |
| 138 | |
| 139 | struct menu { |
| 140 | struct menu *next; |
| 141 | struct menu *parent; |
| 142 | struct menu *list; |
| 143 | struct symbol *sym; |
| 144 | struct property *prompt; |
| 145 | struct expr *dep; |
| 146 | unsigned int flags; |
| 147 | char *help; |
| 148 | struct file *file; |
| 149 | int lineno; |
| 150 | void *data; |
| 151 | }; |
| 152 | |
| 153 | #define MENU_CHANGED 0x0001 |
| 154 | #define MENU_ROOT 0x0002 |
| 155 | |
| 156 | #ifndef SWIG |
| 157 | |
| 158 | extern struct file *file_list; |
| 159 | extern struct file *current_file; |
| 160 | struct file *lookup_file(const char *name); |
| 161 | |
| 162 | extern struct symbol symbol_yes, symbol_no, symbol_mod; |
| 163 | extern struct symbol *modules_sym; |
| 164 | extern struct symbol *sym_defconfig_list; |
| 165 | extern int cdebug; |
| 166 | struct expr *expr_alloc_symbol(struct symbol *sym); |
| 167 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); |
| 168 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); |
| 169 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); |
| 170 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); |
| 171 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); |
| 172 | struct expr *expr_copy(struct expr *org); |
| 173 | void expr_free(struct expr *e); |
| 174 | int expr_eq(struct expr *e1, struct expr *e2); |
| 175 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); |
| 176 | tristate expr_calc_value(struct expr *e); |
| 177 | struct expr *expr_eliminate_yn(struct expr *e); |
| 178 | struct expr *expr_trans_bool(struct expr *e); |
| 179 | struct expr *expr_eliminate_dups(struct expr *e); |
| 180 | struct expr *expr_transform(struct expr *e); |
| 181 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); |
| 182 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); |
| 183 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); |
| 184 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); |
| 185 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); |
| 186 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); |
| 187 | |
| 188 | void expr_fprint(struct expr *e, FILE *out); |
| 189 | struct gstr; /* forward */ |
| 190 | void expr_gstr_print(struct expr *e, struct gstr *gs); |
| 191 | |
| 192 | static inline int expr_is_yes(struct expr *e) |
| 193 | { |
| 194 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); |
| 195 | } |
| 196 | |
| 197 | static inline int expr_is_no(struct expr *e) |
| 198 | { |
| 199 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); |
| 200 | } |
| 201 | #endif |
| 202 | |
| 203 | #ifdef __cplusplus |
| 204 | } |
| 205 | #endif |
| 206 | |
| 207 | #endif /* EXPR_H */ |