1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_TEXTSEARCH_FSM_H
3 #define __LINUX_TEXTSEARCH_FSM_H
4 
5 #include <linux/types.h>
6 
7 enum {
8 	TS_FSM_SPECIFIC,	/* specific character */
9 	TS_FSM_WILDCARD,	/* any character */
10 	TS_FSM_DIGIT,		/* isdigit() */
11 	TS_FSM_XDIGIT,		/* isxdigit() */
12 	TS_FSM_PRINT,		/* isprint() */
13 	TS_FSM_ALPHA,		/* isalpha() */
14 	TS_FSM_ALNUM,		/* isalnum() */
15 	TS_FSM_ASCII,		/* isascii() */
16 	TS_FSM_CNTRL,		/* iscntrl() */
17 	TS_FSM_GRAPH,		/* isgraph() */
18 	TS_FSM_LOWER,		/* islower() */
19 	TS_FSM_UPPER,		/* isupper() */
20 	TS_FSM_PUNCT,		/* ispunct() */
21 	TS_FSM_SPACE,		/* isspace() */
22 	__TS_FSM_TYPE_MAX,
23 };
24 #define TS_FSM_TYPE_MAX (__TS_FSM_TYPE_MAX - 1)
25 
26 enum {
27 	TS_FSM_SINGLE,		/* 1 occurrence */
28 	TS_FSM_PERHAPS,		/* 1 or 0 occurrence */
29 	TS_FSM_ANY,		/* 0..n occurrences */
30 	TS_FSM_MULTI,		/* 1..n occurrences */
31 	TS_FSM_HEAD_IGNORE,	/* 0..n ignored occurrences at head */
32 	__TS_FSM_RECUR_MAX,
33 };
34 #define TS_FSM_RECUR_MAX (__TS_FSM_RECUR_MAX - 1)
35 
36 /**
37  * struct ts_fsm_token - state machine token (state)
38  * @type: type of token
39  * @recur: number of recurrences
40  * @value: character value for TS_FSM_SPECIFIC
41  */
42 struct ts_fsm_token
43 {
44 	__u16		type;
45 	__u8		recur;
46 	__u8		value;
47 };
48 
49 #endif
50