/* * 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 __cplusplus extern "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 */