kconfig/expr.h
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Oct 14 20:06:37 2008 +0000 (2008-10-14)
changeset 934 e2f4be0feb9d
child 943 1cca90ce0481
permissions -rw-r--r--
Correctly auto-complete with start-steps as well.

/trunk/ct-ng.comp | 2 1 1 0 +-
1 file changed, 1 insertion(+), 1 deletion(-)
     1 /*
     2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
     3  * Released under the terms of the GNU GPL v2.0.
     4  */
     5 
     6 #ifndef EXPR_H
     7 #define EXPR_H
     8 
     9 #ifdef __cplusplus
    10 extern "C" {
    11 #endif
    12 
    13 #include <stdio.h>
    14 #ifndef __cplusplus
    15 #include <stdbool.h>
    16 #endif
    17 
    18 struct file {
    19 	struct file *next;
    20 	struct file *parent;
    21 	char *name;
    22 	int lineno;
    23 	int flags;
    24 };
    25 
    26 #define FILE_BUSY		0x0001
    27 #define FILE_SCANNED		0x0002
    28 #define FILE_PRINTED		0x0004
    29 
    30 typedef enum tristate {
    31 	no, mod, yes
    32 } tristate;
    33 
    34 enum expr_type {
    35 	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE
    36 };
    37 
    38 union expr_data {
    39 	struct expr *expr;
    40 	struct symbol *sym;
    41 };
    42 
    43 struct expr {
    44 	enum expr_type type;
    45 	union expr_data left, right;
    46 };
    47 
    48 #define E_OR(dep1, dep2)	(((dep1)>(dep2))?(dep1):(dep2))
    49 #define E_AND(dep1, dep2)	(((dep1)<(dep2))?(dep1):(dep2))
    50 #define E_NOT(dep)		(2-(dep))
    51 
    52 struct expr_value {
    53 	struct expr *expr;
    54 	tristate tri;
    55 };
    56 
    57 struct symbol_value {
    58 	void *val;
    59 	tristate tri;
    60 };
    61 
    62 enum symbol_type {
    63 	S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
    64 };
    65 
    66 enum {
    67 	S_DEF_USER,		/* main user value */
    68 	S_DEF_AUTO,
    69 };
    70 
    71 struct symbol {
    72 	struct symbol *next;
    73 	char *name;
    74 	char *help;
    75 	enum symbol_type type;
    76 	struct symbol_value curr;
    77 	struct symbol_value def[4];
    78 	tristate visible;
    79 	int flags;
    80 	struct property *prop;
    81 	struct expr *dep, *dep2;
    82 	struct expr_value rev_dep;
    83 };
    84 
    85 #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)
    86 
    87 #define SYMBOL_CONST		0x0001
    88 #define SYMBOL_CHECK		0x0008
    89 #define SYMBOL_CHOICE		0x0010
    90 #define SYMBOL_CHOICEVAL	0x0020
    91 #define SYMBOL_PRINTED		0x0040
    92 #define SYMBOL_VALID		0x0080
    93 #define SYMBOL_OPTIONAL		0x0100
    94 #define SYMBOL_WRITE		0x0200
    95 #define SYMBOL_CHANGED		0x0400
    96 #define SYMBOL_AUTO		0x1000
    97 #define SYMBOL_CHECKED		0x2000
    98 #define SYMBOL_WARNED		0x8000
    99 #define SYMBOL_DEF		0x10000
   100 #define SYMBOL_DEF_USER		0x10000
   101 #define SYMBOL_DEF_AUTO		0x20000
   102 #define SYMBOL_DEF3		0x40000
   103 #define SYMBOL_DEF4		0x80000
   104 
   105 #define SYMBOL_MAXLENGTH	256
   106 #define SYMBOL_HASHSIZE		257
   107 #define SYMBOL_HASHMASK		0xff
   108 
   109 enum prop_type {
   110 	P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE
   111 };
   112 
   113 struct property {
   114 	struct property *next;
   115 	struct symbol *sym;
   116 	enum prop_type type;
   117 	const char *text;
   118 	struct expr_value visible;
   119 	struct expr *expr;
   120 	struct menu *menu;
   121 	struct file *file;
   122 	int lineno;
   123 };
   124 
   125 #define for_all_properties(sym, st, tok) \
   126 	for (st = sym->prop; st; st = st->next) \
   127 		if (st->type == (tok))
   128 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
   129 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
   130 #define for_all_prompts(sym, st) \
   131 	for (st = sym->prop; st; st = st->next) \
   132 		if (st->text)
   133 
   134 struct menu {
   135 	struct menu *next;
   136 	struct menu *parent;
   137 	struct menu *list;
   138 	struct symbol *sym;
   139 	struct property *prompt;
   140 	struct expr *dep;
   141 	unsigned int flags;
   142 	//char *help;
   143 	struct file *file;
   144 	int lineno;
   145 	void *data;
   146 };
   147 
   148 #define MENU_CHANGED		0x0001
   149 #define MENU_ROOT		0x0002
   150 
   151 #ifndef SWIG
   152 
   153 extern struct file *file_list;
   154 extern struct file *current_file;
   155 struct file *lookup_file(const char *name);
   156 
   157 extern struct symbol symbol_yes, symbol_no, symbol_mod;
   158 extern struct symbol *modules_sym;
   159 extern struct symbol *sym_defconfig_list;
   160 extern int cdebug;
   161 struct expr *expr_alloc_symbol(struct symbol *sym);
   162 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
   163 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
   164 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
   165 struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
   166 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
   167 struct expr *expr_copy(struct expr *org);
   168 void expr_free(struct expr *e);
   169 int expr_eq(struct expr *e1, struct expr *e2);
   170 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
   171 tristate expr_calc_value(struct expr *e);
   172 struct expr *expr_eliminate_yn(struct expr *e);
   173 struct expr *expr_trans_bool(struct expr *e);
   174 struct expr *expr_eliminate_dups(struct expr *e);
   175 struct expr *expr_transform(struct expr *e);
   176 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
   177 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
   178 struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
   179 struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
   180 void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
   181 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
   182 
   183 void expr_fprint(struct expr *e, FILE *out);
   184 struct gstr; /* forward */
   185 void expr_gstr_print(struct expr *e, struct gstr *gs);
   186 
   187 static inline int expr_is_yes(struct expr *e)
   188 {
   189 	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
   190 }
   191 
   192 static inline int expr_is_no(struct expr *e)
   193 {
   194 	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
   195 }
   196 #endif
   197 
   198 #ifdef __cplusplus
   199 }
   200 #endif
   201 
   202 #endif /* EXPR_H */