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/*
** Character types.
** Donated to the public domain.
*/
#ifndef _LJ_CHAR_H
#define _LJ_CHAR_H
#include "lj_def.h"
#define LJ_CHAR_CNTRL 0x01
#define LJ_CHAR_SPACE 0x02
#define LJ_CHAR_PUNCT 0x04
#define LJ_CHAR_DIGIT 0x08
#define LJ_CHAR_XDIGIT 0x10
#define LJ_CHAR_UPPER 0x20
#define LJ_CHAR_LOWER 0x40
#define LJ_CHAR_IDENT 0x80
#define LJ_CHAR_ALPHA (LJ_CHAR_LOWER|LJ_CHAR_UPPER)
#define LJ_CHAR_ALNUM (LJ_CHAR_ALPHA|LJ_CHAR_DIGIT)
#define LJ_CHAR_GRAPH (LJ_CHAR_ALNUM|LJ_CHAR_PUNCT)
/* Only pass -1 or 0..255 to these macros. Never pass a signed char! */
#define lj_char_isa(c, t) ((lj_char_bits+1)[(c)] & t)
#define lj_char_iscntrl(c) lj_char_isa((c), LJ_CHAR_CNTRL)
#define lj_char_isspace(c) lj_char_isa((c), LJ_CHAR_SPACE)
#define lj_char_ispunct(c) lj_char_isa((c), LJ_CHAR_PUNCT)
#define lj_char_isdigit(c) lj_char_isa((c), LJ_CHAR_DIGIT)
#define lj_char_isxdigit(c) lj_char_isa((c), LJ_CHAR_XDIGIT)
#define lj_char_isupper(c) lj_char_isa((c), LJ_CHAR_UPPER)
#define lj_char_islower(c) lj_char_isa((c), LJ_CHAR_LOWER)
#define lj_char_isident(c) lj_char_isa((c), LJ_CHAR_IDENT)
#define lj_char_isalpha(c) lj_char_isa((c), LJ_CHAR_ALPHA)
#define lj_char_isalnum(c) lj_char_isa((c), LJ_CHAR_ALNUM)
#define lj_char_isgraph(c) lj_char_isa((c), LJ_CHAR_GRAPH)
#define lj_char_toupper(c) ((c) - (lj_char_islower(c) >> 1))
#define lj_char_tolower(c) ((c) + lj_char_isupper(c))
LJ_DATA const uint8_t lj_char_bits[257];
#endif
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