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Root/tags/2.0/i386/config/expr.h

Source at commit 1808 created 12 years 3 months ago.
By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier?
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␉const char *name;␊
22␉int lineno;␊
23␉int flags;␊
24};␊
25␊
26#define FILE_BUSY␉␉0x0001␊
27#define FILE_SCANNED␉␉0x0002␊
28␊
29typedef enum tristate {␊
30␉no, mod, yes␊
31} tristate;␊
32␊
33enum expr_type {␊
34␉E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE␊
35};␊
36␊
37union expr_data {␊
38␉struct expr *expr;␊
39␉struct symbol *sym;␊
40};␊
41␊
42struct 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␊
54struct expr_value {␊
55␉struct expr *expr;␊
56␉tristate tri;␊
57};␊
58␊
59struct symbol_value {␊
60␉void *val;␊
61␉tristate tri;␊
62};␊
63␊
64enum 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[] */␊
69enum {␊
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␊
77struct 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 */␊
125enum 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␊
138struct 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␊
161struct 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␊
181extern struct file *file_list;␊
182extern struct file *current_file;␊
183struct file *lookup_file(const char *name);␊
184␊
185extern struct symbol symbol_yes, symbol_no, symbol_mod;␊
186extern struct symbol *modules_sym;␊
187extern struct symbol *sym_defconfig_list;␊
188extern int cdebug;␊
189struct expr *expr_alloc_symbol(struct symbol *sym);␊
190struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);␊
191struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);␊
192struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);␊
193struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);␊
194struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);␊
195struct expr *expr_copy(const struct expr *org);␊
196void expr_free(struct expr *e);␊
197int expr_eq(struct expr *e1, struct expr *e2);␊
198void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);␊
199tristate expr_calc_value(struct expr *e);␊
200struct expr *expr_eliminate_yn(struct expr *e);␊
201struct expr *expr_trans_bool(struct expr *e);␊
202struct expr *expr_eliminate_dups(struct expr *e);␊
203struct expr *expr_transform(struct expr *e);␊
204int expr_contains_symbol(struct expr *dep, struct symbol *sym);␊
205bool expr_depends_symbol(struct expr *dep, struct symbol *sym);␊
206struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);␊
207struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);␊
208void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);␊
209struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);␊
210struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);␊
211␊
212void expr_fprint(struct expr *e, FILE *out);␊
213struct gstr; /* forward */␊
214void expr_gstr_print(struct expr *e, struct gstr *gs);␊
215␊
216static inline int expr_is_yes(struct expr *e)␊
217{␊
218␉return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);␊
219}␊
220␊
221static 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 */␊
232

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