/branches/18.06.1/scripts/config/expr.h |
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/* |
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
* Released under the terms of the GNU GPL v2.0. |
*/ |
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#ifndef EXPR_H |
#define EXPR_H |
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#ifdef __cplusplus |
extern "C" { |
#endif |
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#include <assert.h> |
#include <stdio.h> |
#include "list.h" |
#ifndef __cplusplus |
#include <stdbool.h> |
#endif |
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struct file { |
struct file *next; |
struct file *parent; |
const char *name; |
int lineno; |
}; |
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typedef enum tristate { |
no, mod, yes |
} tristate; |
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enum expr_type { |
E_NONE, E_OR, E_AND, E_NOT, |
E_EQUAL, E_UNEQUAL, E_LTH, E_LEQ, E_GTH, E_GEQ, |
E_LIST, E_SYMBOL, E_RANGE |
}; |
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union expr_data { |
struct expr *expr; |
struct symbol *sym; |
}; |
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struct expr { |
enum expr_type type; |
union expr_data left, right; |
}; |
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#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) |
#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) |
#define EXPR_NOT(dep) (2-(dep)) |
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#define expr_list_for_each_sym(l, e, s) \ |
for (e = (l); e && (s = e->right.sym); e = e->left.expr) |
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struct expr_value { |
struct expr *expr; |
tristate tri; |
}; |
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struct symbol_value { |
void *val; |
tristate tri; |
}; |
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enum symbol_type { |
S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER |
}; |
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/* enum values are used as index to symbol.def[] */ |
enum { |
S_DEF_USER, /* main user value */ |
S_DEF_AUTO, /* values read from auto.conf */ |
S_DEF_DEF3, /* Reserved for UI usage */ |
S_DEF_DEF4, /* Reserved for UI usage */ |
S_DEF_COUNT |
}; |
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struct symbol { |
struct symbol *next; |
char *name; |
enum symbol_type type; |
struct symbol_value curr; |
struct symbol_value def[S_DEF_COUNT]; |
tristate visible; |
int flags; |
struct property *prop; |
struct expr_value dir_dep; |
struct expr_value rev_dep; |
}; |
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#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) |
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#define SYMBOL_CONST 0x0001 /* symbol is const */ |
#define SYMBOL_CHECK 0x0008 /* used during dependency checking */ |
#define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */ |
#define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */ |
#define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */ |
#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */ |
#define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */ |
#define SYMBOL_CHANGED 0x0400 /* ? */ |
#define SYMBOL_AUTO 0x1000 /* value from environment variable */ |
#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */ |
#define SYMBOL_WARNED 0x8000 /* warning has been issued */ |
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/* Set when symbol.def[] is used */ |
#define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */ |
#define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */ |
#define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */ |
#define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */ |
#define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */ |
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/* choice values need to be set before calculating this symbol value */ |
#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000 |
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/* Set symbol to y if allnoconfig; used for symbols that hide others */ |
#define SYMBOL_ALLNOCONFIG_Y 0x200000 |
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#define SYMBOL_MAXLENGTH 256 |
#define SYMBOL_HASHSIZE 9973 |
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/* A property represent the config options that can be associated |
* with a config "symbol". |
* Sample: |
* config FOO |
* default y |
* prompt "foo prompt" |
* select BAR |
* config BAZ |
* int "BAZ Value" |
* range 1..255 |
*/ |
enum prop_type { |
P_UNKNOWN, |
P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */ |
P_COMMENT, /* text associated with a comment */ |
P_MENU, /* prompt associated with a menuconfig option */ |
P_DEFAULT, /* default y */ |
P_CHOICE, /* choice value */ |
P_SELECT, /* select BAR */ |
P_RANGE, /* range 7..100 (for a symbol) */ |
P_ENV, /* value from environment variable */ |
P_SYMBOL, /* where a symbol is defined */ |
P_RESET, /* reset to defaults condition */ |
}; |
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struct property { |
struct property *next; /* next property - null if last */ |
struct symbol *sym; /* the symbol for which the property is associated */ |
enum prop_type type; /* type of property */ |
const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */ |
struct expr_value visible; |
struct expr *expr; /* the optional conditional part of the property */ |
struct menu *menu; /* the menu the property are associated with |
* valid for: P_SELECT, P_RANGE, P_CHOICE, |
* P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */ |
struct file *file; /* what file was this property defined */ |
int lineno; /* what lineno was this property defined */ |
}; |
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#define for_all_properties(sym, st, tok) \ |
for (st = sym->prop; st; st = st->next) \ |
if (st->type == (tok)) |
#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) |
#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) |
#define for_all_prompts(sym, st) \ |
for (st = sym->prop; st; st = st->next) \ |
if (st->text) |
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struct menu { |
struct menu *next; |
struct menu *parent; |
struct menu *list; |
struct symbol *sym; |
struct property *prompt; |
struct expr *visibility; |
struct expr *dep; |
unsigned int flags; |
char *help; |
struct file *file; |
int lineno; |
void *data; |
}; |
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#define MENU_CHANGED 0x0001 |
#define MENU_ROOT 0x0002 |
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struct jump_key { |
struct list_head entries; |
size_t offset; |
struct menu *target; |
int index; |
}; |
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#define JUMP_NB 9 |
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extern struct file *file_list; |
extern struct file *current_file; |
struct file *lookup_file(const char *name); |
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extern struct symbol symbol_yes, symbol_no, symbol_mod; |
extern struct symbol *modules_sym; |
extern struct symbol *sym_defconfig_list; |
extern int cdebug; |
struct expr *expr_alloc_symbol(struct symbol *sym); |
struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); |
struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); |
struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); |
struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); |
struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); |
struct expr *expr_copy(const struct expr *org); |
void expr_free(struct expr *e); |
void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); |
tristate expr_calc_value(struct expr *e); |
struct expr *expr_trans_bool(struct expr *e); |
struct expr *expr_eliminate_dups(struct expr *e); |
struct expr *expr_transform(struct expr *e); |
int expr_contains_symbol(struct expr *dep, struct symbol *sym); |
bool expr_depends_symbol(struct expr *dep, struct symbol *sym); |
struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); |
struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2); |
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void expr_fprint(struct expr *e, FILE *out); |
struct gstr; /* forward */ |
void expr_gstr_print(struct expr *e, struct gstr *gs); |
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static inline int expr_is_yes(struct expr *e) |
{ |
return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); |
} |
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static inline int expr_is_no(struct expr *e) |
{ |
return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); |
} |
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#ifdef __cplusplus |
} |
#endif |
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#endif /* EXPR_H */ |