1/*
2** Character types.
3** Donated to the public domain.
4*/
5
6#ifndef _LJ_CHAR_H
7#define _LJ_CHAR_H
8
9#include "lj_def.h"
10
11#define LJ_CHAR_CNTRL 0x01
12#define LJ_CHAR_SPACE 0x02
13#define LJ_CHAR_PUNCT 0x04
14#define LJ_CHAR_DIGIT 0x08
15#define LJ_CHAR_XDIGIT 0x10
16#define LJ_CHAR_UPPER 0x20
17#define LJ_CHAR_LOWER 0x40
18#define LJ_CHAR_IDENT 0x80
19#define LJ_CHAR_ALPHA (LJ_CHAR_LOWER|LJ_CHAR_UPPER)
20#define LJ_CHAR_ALNUM (LJ_CHAR_ALPHA|LJ_CHAR_DIGIT)
21#define LJ_CHAR_GRAPH (LJ_CHAR_ALNUM|LJ_CHAR_PUNCT)
22
23/* Only pass -1 or 0..255 to these macros. Never pass a signed char! */
24#define lj_char_isa(c, t) ((lj_char_bits+1)[(c)] & t)
25#define lj_char_iscntrl(c) lj_char_isa((c), LJ_CHAR_CNTRL)
26#define lj_char_isspace(c) lj_char_isa((c), LJ_CHAR_SPACE)
27#define lj_char_ispunct(c) lj_char_isa((c), LJ_CHAR_PUNCT)
28#define lj_char_isdigit(c) lj_char_isa((c), LJ_CHAR_DIGIT)
29#define lj_char_isxdigit(c) lj_char_isa((c), LJ_CHAR_XDIGIT)
30#define lj_char_isupper(c) lj_char_isa((c), LJ_CHAR_UPPER)
31#define lj_char_islower(c) lj_char_isa((c), LJ_CHAR_LOWER)
32#define lj_char_isident(c) lj_char_isa((c), LJ_CHAR_IDENT)
33#define lj_char_isalpha(c) lj_char_isa((c), LJ_CHAR_ALPHA)
34#define lj_char_isalnum(c) lj_char_isa((c), LJ_CHAR_ALNUM)
35#define lj_char_isgraph(c) lj_char_isa((c), LJ_CHAR_GRAPH)
36
37#define lj_char_toupper(c) ((c) - (lj_char_islower(c) >> 1))
38#define lj_char_tolower(c) ((c) + lj_char_isupper(c))
39
40LJ_DATA const uint8_t lj_char_bits[257];
41
42#endif
43