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Return to expr.h CVS log | Up to [Qemu by Fabrice Bellard] / qemu / roms / seabios / tools / kconfig |
1.1 root 1: /*
2: * Copyright (C) 2002 Roman Zippel <[email protected]>
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: const char *name;
22: int lineno;
23: int flags;
24: };
25:
26: #define FILE_BUSY 0x0001
27: #define FILE_SCANNED 0x0002
28:
29: typedef enum tristate {
30: no, mod, yes
31: } tristate;
32:
33: enum expr_type {
34: E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
35: };
36:
37: union expr_data {
38: struct expr *expr;
39: struct symbol *sym;
40: };
41:
42: struct expr {
43: enum expr_type type;
44: union expr_data left, right;
45: };
46:
47: #define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
48: #define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
49: #define EXPR_NOT(dep) (2-(dep))
50:
51: #define expr_list_for_each_sym(l, e, s) \
52: for (e = (l); e && (s = e->right.sym); e = e->left.expr)
53:
54: struct expr_value {
55: struct expr *expr;
56: tristate tri;
57: };
58:
59: struct symbol_value {
60: void *val;
61: tristate tri;
62: };
63:
64: enum symbol_type {
65: S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
66: };
67:
68: /* enum values are used as index to symbol.def[] */
69: enum {
70: S_DEF_USER, /* main user value */
71: S_DEF_AUTO, /* values read from auto.conf */
72: S_DEF_DEF3, /* Reserved for UI usage */
73: S_DEF_DEF4, /* Reserved for UI usage */
74: S_DEF_COUNT
75: };
76:
77: struct symbol {
78: struct symbol *next;
79: char *name;
80: enum symbol_type type;
81: struct symbol_value curr;
82: struct symbol_value def[S_DEF_COUNT];
83: tristate visible;
84: int flags;
85: struct property *prop;
86: struct expr_value dir_dep;
87: struct expr_value rev_dep;
88: };
89:
90: #define for_all_symbols(i, sym) for (i = 0; i < SYMBOL_HASHSIZE; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
91:
92: #define SYMBOL_CONST 0x0001 /* symbol is const */
93: #define SYMBOL_CHECK 0x0008 /* used during dependency checking */
94: #define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
95: #define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
96: #define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
97: #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
98: #define SYMBOL_WRITE 0x0200 /* ? */
99: #define SYMBOL_CHANGED 0x0400 /* ? */
100: #define SYMBOL_AUTO 0x1000 /* value from environment variable */
101: #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
102: #define SYMBOL_WARNED 0x8000 /* warning has been issued */
103:
104: /* Set when symbol.def[] is used */
105: #define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
106: #define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
107: #define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
108: #define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
109: #define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
110:
111: #define SYMBOL_MAXLENGTH 256
112: #define SYMBOL_HASHSIZE 9973
113:
114: /* A property represent the config options that can be associated
115: * with a config "symbol".
116: * Sample:
117: * config FOO
118: * default y
119: * prompt "foo prompt"
120: * select BAR
121: * config BAZ
122: * int "BAZ Value"
123: * range 1..255
124: */
125: enum prop_type {
126: P_UNKNOWN,
127: P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
128: P_COMMENT, /* text associated with a comment */
129: P_MENU, /* prompt associated with a menuconfig option */
130: P_DEFAULT, /* default y */
131: P_CHOICE, /* choice value */
132: P_SELECT, /* select BAR */
133: P_RANGE, /* range 7..100 (for a symbol) */
134: P_ENV, /* value from environment variable */
135: P_SYMBOL, /* where a symbol is defined */
136: };
137:
138: struct property {
139: struct property *next; /* next property - null if last */
140: struct symbol *sym; /* the symbol for which the property is associated */
141: enum prop_type type; /* type of property */
142: const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
143: struct expr_value visible;
144: struct expr *expr; /* the optional conditional part of the property */
145: struct menu *menu; /* the menu the property are associated with
146: * valid for: P_SELECT, P_RANGE, P_CHOICE,
147: * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
148: struct file *file; /* what file was this property defined */
149: int lineno; /* what lineno was this property defined */
150: };
151:
152: #define for_all_properties(sym, st, tok) \
153: for (st = sym->prop; st; st = st->next) \
154: if (st->type == (tok))
155: #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
156: #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
157: #define for_all_prompts(sym, st) \
158: for (st = sym->prop; st; st = st->next) \
159: if (st->text)
160:
161: struct menu {
162: struct menu *next;
163: struct menu *parent;
164: struct menu *list;
165: struct symbol *sym;
166: struct property *prompt;
167: struct expr *visibility;
168: struct expr *dep;
169: unsigned int flags;
170: char *help;
171: struct file *file;
172: int lineno;
173: void *data;
174: };
175:
176: #define MENU_CHANGED 0x0001
177: #define MENU_ROOT 0x0002
178:
179: #ifndef SWIG
180:
181: extern struct file *file_list;
182: extern struct file *current_file;
183: struct file *lookup_file(const char *name);
184:
185: extern struct symbol symbol_yes, symbol_no, symbol_mod;
186: extern struct symbol *modules_sym;
187: extern struct symbol *sym_defconfig_list;
188: extern int cdebug;
189: struct expr *expr_alloc_symbol(struct symbol *sym);
190: struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
191: struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
192: struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
193: struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
194: struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
195: struct expr *expr_copy(const struct expr *org);
196: void expr_free(struct expr *e);
197: int expr_eq(struct expr *e1, struct expr *e2);
198: void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
199: tristate expr_calc_value(struct expr *e);
200: struct expr *expr_eliminate_yn(struct expr *e);
201: struct expr *expr_trans_bool(struct expr *e);
202: struct expr *expr_eliminate_dups(struct expr *e);
203: struct expr *expr_transform(struct expr *e);
204: int expr_contains_symbol(struct expr *dep, struct symbol *sym);
205: bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
206: struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
207: struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
208: void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
209: struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
210: struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
211:
212: void expr_fprint(struct expr *e, FILE *out);
213: struct gstr; /* forward */
214: void expr_gstr_print(struct expr *e, struct gstr *gs);
215:
216: static inline int expr_is_yes(struct expr *e)
217: {
218: return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
219: }
220:
221: static inline int expr_is_no(struct expr *e)
222: {
223: return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
224: }
225: #endif
226:
227: #ifdef __cplusplus
228: }
229: #endif
230:
231: #endif /* EXPR_H */
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