scripts/kconfig/expr.h - kernel/msm - Gitiles

 /*
  * 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 <assert.h>
 #include <stdio.h>
 #ifndef __cplusplus
 #include <stdbool.h>
 #endif

 struct file {
 	struct file *next;
 	struct file *parent;
 	const char *name;
 	int lineno;
 };

 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 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
 };

 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;
 };

 #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)

 #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  /* ? */
 #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 */

 /* 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 */

 #define SYMBOL_MAXLENGTH	256
 #define SYMBOL_HASHSIZE		9973

 /* 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 */
 };

 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 */
 };

 #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 *visibility;
 	struct expr *dep;
 	unsigned int flags;
 	char *help;
 	struct file *file;
 	int lineno;
 	void *data;
 };

 #define MENU_CHANGED		0x0001
 #define MENU_ROOT		0x0002

 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(const 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);
 struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);

 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);
 }

 #ifdef __cplusplus
 }
 #endif

 #endif /* EXPR_H */
	/*
	* 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 <assert.h>
	#include <stdio.h>
	#ifndef __cplusplus
	#include <stdbool.h>
	#endif

	struct file {
	struct file *next;
	struct file *parent;
	const char *name;
	int lineno;
	};

	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 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
	};

	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;
	};

	#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)

	#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 /* ? */
	#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 */

	/* 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 */

	#define SYMBOL_MAXLENGTH 256
	#define SYMBOL_HASHSIZE 9973

	/* 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 */
	};

	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 */
	};

	#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 *visibility;
	struct expr *dep;
	unsigned int flags;
	char *help;
	struct file *file;
	int lineno;
	void *data;
	};

	#define MENU_CHANGED 0x0001
	#define MENU_ROOT 0x0002

	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(const 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);
	struct expr expr_simplify_unmet_dep(struct expr e1, struct expr *e2);

	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);
	}

	#ifdef __cplusplus
	}
	#endif

	#endif /* EXPR_H */