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
7enum {
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
26enum {
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 */
42struct ts_fsm_token
43{
44	__u16		type;
45	__u8		recur;
46	__u8		value;
47};
48
49#endif
50