/* * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> * Released under the terms of the GNU GPL v2.0. */ #ifndef EXPR_H#define EXPR_H #ifdef __cplusplusextern "C" {#endif #include <stdio.h>#ifndef __cplusplus#include <stdbool.h>#endif struct file {	struct file *next;	struct file *parent;	char *name;	int lineno;	int flags;}; #define FILE_BUSY		0x0001#define FILE_SCANNED		0x0002 typedef enum tristate {	no, mod, yes} tristate; enum expr_type {	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE}; union expr_data {	struct expr *expr;	struct symbol *sym;}; struct expr {	enum expr_type type;	union expr_data left, right;}; #define EXPR_OR(dep1, dep2)	(((dep1)>(dep2))?(dep1):(dep2))#define EXPR_AND(dep1, dep2)	(((dep1)<(dep2))?(dep1):(dep2))#define EXPR_NOT(dep)		(2-(dep)) #define expr_list_for_each_sym(l, e, s) \	for (e = (l); e && (s = e->right.sym); e = e->left.expr) struct expr_value {	struct expr *expr;	tristate tri;}; struct symbol_value {	void *val;	tristate tri;}; enum symbol_type {	S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER}; enum {	S_DEF_USER,		/* main user value */	S_DEF_AUTO,}; struct symbol {	struct symbol *next;	char *name;	enum symbol_type type;	struct symbol_value curr;	struct symbol_value def[4];	tristate visible;	int flags;	struct property *prop;	struct expr_value rev_dep;}; #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) #define SYMBOL_CONST		0x0001#define SYMBOL_CHECK		0x0008#define SYMBOL_CHOICE		0x0010#define SYMBOL_CHOICEVAL	0x0020#define SYMBOL_VALID		0x0080#define SYMBOL_OPTIONAL		0x0100#define SYMBOL_WRITE		0x0200#define SYMBOL_CHANGED		0x0400#define SYMBOL_AUTO		0x1000#define SYMBOL_CHECKED		0x2000#define SYMBOL_WARNED		0x8000#define SYMBOL_DEF		0x10000#define SYMBOL_DEF_USER		0x10000#define SYMBOL_DEF_AUTO		0x20000#define SYMBOL_DEF3		0x40000#define SYMBOL_DEF4		0x80000 #define SYMBOL_MAXLENGTH	256#define SYMBOL_HASHSIZE		257#define SYMBOL_HASHMASK		0xff enum prop_type {	P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,	P_SELECT, P_RANGE, P_ENV}; struct property {	struct property *next;	struct symbol *sym;	enum prop_type type;	const char *text;	struct expr_value visible;	struct expr *expr;	struct menu *menu;	struct file *file;	int lineno;}; #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) struct menu {	struct menu *next;	struct menu *parent;	struct menu *list;	struct symbol *sym;	struct property *prompt;	struct expr *dep;	unsigned int flags;	char *help;	struct file *file;	int lineno;	void *data;}; #define MENU_CHANGED		0x0001#define MENU_ROOT		0x0002 #ifndef SWIG extern struct file *file_list;extern struct file *current_file;struct file *lookup_file(const char *name); 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(struct expr *org);void expr_free(struct expr *e);int expr_eq(struct expr *e1, struct expr *e2);void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);tristate expr_calc_value(struct expr *e);struct expr *expr_eliminate_yn(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_extract_eq_and(struct expr **ep1, struct expr **ep2);struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); void expr_fprint(struct expr *e, FILE *out);struct gstr; /* forward */void expr_gstr_print(struct expr *e, struct gstr *gs); static inline int expr_is_yes(struct expr *e){	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);} static inline int expr_is_no(struct expr *e){	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);}#endif #ifdef __cplusplus}#endif #endif /* EXPR_H */