crosstool-ng: kconfig/expr.h@1cb6cf834483

     1 /*

     2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>

     3  * Released under the terms of the GNU GPL v2.0.

     4  */

     6 #ifndef EXPR_H

     7 #define EXPR_H

     9 #ifdef __cplusplus

    10 extern "C" {

    11 #endif

    13 #include <stdio.h>

    14 #ifndef __cplusplus

    15 #include <stdbool.h>

    16 #endif

    18 struct file {

    19 	struct file *next;

    20 	struct file *parent;

    21 	char *name;

    22 	int lineno;

    23 	int flags;

    24 };

    26 #define FILE_BUSY		0x0001

    27 #define FILE_SCANNED		0x0002

    29 typedef enum tristate {

    30 	no, mod, yes

    31 } tristate;

    33 enum expr_type {

    34 	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE

    35 };

    37 union expr_data {

    38 	struct expr *expr;

    39 	struct symbol *sym;

    40 };

    42 struct expr {

    43 	enum expr_type type;

    44 	union expr_data left, right;

    45 };

    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))

    51 #define expr_list_for_each_sym(l, e, s) \

    52 	for (e = (l); e && (s = e->right.sym); e = e->left.expr)

    54 struct expr_value {

    55 	struct expr *expr;

    56 	tristate tri;

    57 };

    59 struct symbol_value {

    60 	void *val;

    61 	tristate tri;

    62 };

    64 enum symbol_type {

    65 	S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER

    66 };

    68 /* enum values are used as index to symbol.def[] */

    69 enum {

    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 };

    77 struct 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 rev_dep;

    87 };

    89 #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)

    91 #define SYMBOL_CONST      0x0001  /* symbol is const */

    92 #define SYMBOL_CHECK      0x0008  /* used during dependency checking */

    93 #define SYMBOL_CHOICE     0x0010  /* start of a choice block (null name) */

    94 #define SYMBOL_CHOICEVAL  0x0020  /* used as a value in a choice block */

    95 #define SYMBOL_VALID      0x0080  /* set when symbol.curr is calculated */

    96 #define SYMBOL_OPTIONAL   0x0100  /* choice is optional - values can be 'n' */

    97 #define SYMBOL_WRITE      0x0200  /* ? */

    98 #define SYMBOL_CHANGED    0x0400  /* ? */

    99 #define SYMBOL_AUTO       0x1000  /* value from environment variable */

   100 #define SYMBOL_CHECKED    0x2000  /* used during dependency checking */

   101 #define SYMBOL_WARNED     0x8000  /* warning has been issued */

   103 /* Set when symbol.def[] is used */

   104 #define SYMBOL_DEF        0x10000  /* First bit of SYMBOL_DEF */

   105 #define SYMBOL_DEF_USER   0x10000  /* symbol.def[S_DEF_USER] is valid */

   106 #define SYMBOL_DEF_AUTO   0x20000  /* symbol.def[S_DEF_AUTO] is valid */

   107 #define SYMBOL_DEF3       0x40000  /* symbol.def[S_DEF_3] is valid */

   108 #define SYMBOL_DEF4       0x80000  /* symbol.def[S_DEF_4] is valid */

   110 #define SYMBOL_MAXLENGTH	256

   111 #define SYMBOL_HASHSIZE		257

   112 #define SYMBOL_HASHMASK		0xff

   114 enum prop_type {

   115 	P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,

   116 	P_SELECT, P_RANGE, P_ENV

   117 };

   119 struct property {

   120 	struct property *next;

   121 	struct symbol *sym;

   122 	enum prop_type type;

   123 	const char *text;

   124 	struct expr_value visible;

   125 	struct expr *expr;

   126 	struct menu *menu;

   127 	struct file *file;

   128 	int lineno;

   129 };

   131 #define for_all_properties(sym, st, tok) \

   132 	for (st = sym->prop; st; st = st->next) \

   133 		if (st->type == (tok))

   134 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)

   135 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)

   136 #define for_all_prompts(sym, st) \

   137 	for (st = sym->prop; st; st = st->next) \

   138 		if (st->text)

   140 struct menu {

   141 	struct menu *next;

   142 	struct menu *parent;

   143 	struct menu *list;

   144 	struct symbol *sym;

   145 	struct property *prompt;

   146 	struct expr *dep;

   147 	unsigned int flags;

   148 	char *help;

   149 	struct file *file;

   150 	int lineno;

   151 	void *data;

   152 };

   154 #define MENU_CHANGED		0x0001

   155 #define MENU_ROOT		0x0002

   157 #ifndef SWIG

   159 extern struct file *file_list;

   160 extern struct file *current_file;

   161 struct file *lookup_file(const char *name);

   163 extern struct symbol symbol_yes, symbol_no, symbol_mod;

   164 extern struct symbol *modules_sym;

   165 extern struct symbol *sym_defconfig_list;

   166 extern int cdebug;

   167 struct expr *expr_alloc_symbol(struct symbol *sym);

   168 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);

   169 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);

   170 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);

   171 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);

   172 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);

   173 struct expr *expr_copy(struct expr *org);

   174 void expr_free(struct expr *e);

   175 int expr_eq(struct expr *e1, struct expr *e2);

   176 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);

   177 tristate expr_calc_value(struct expr *e);

   178 struct expr *expr_eliminate_yn(struct expr *e);

   179 struct expr *expr_trans_bool(struct expr *e);

   180 struct expr *expr_eliminate_dups(struct expr *e);

   181 struct expr *expr_transform(struct expr *e);

   182 int expr_contains_symbol(struct expr *dep, struct symbol *sym);

   183 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);

   184 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);

   185 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);

   186 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);

   187 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);

   189 void expr_fprint(struct expr *e, FILE *out);

   190 struct gstr; /* forward */

   191 void expr_gstr_print(struct expr *e, struct gstr *gs);

   193 static inline int expr_is_yes(struct expr *e)

   194 {

   195 	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);

   196 }

   198 static inline int expr_is_no(struct expr *e)

   199 {

   200 	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);

   201 }

   202 #endif

   204 #ifdef __cplusplus

   205 }

   206 #endif

   208 #endif /* EXPR_H */

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Fri Mar 06 12:33:41 2009 +0000 (2009-03-06)
changeset 1235	1cb6cf834483
parent 1234	20da13326d14
child 1236	aba08231fe27
permissions	-rw-r--r--