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21
#if 'A' == 65 && '0' == 48
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22
/* ASCII case: can use its own tables; faster and fixed */
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#define LUA_USE_CTYPE 0
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#define LUA_USE_CTYPE 0
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/* must use standard C ctype */
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#define LUA_USE_CTYPE 1
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#if !LUA_USE_CTYPE /* { */
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#define LUA_USE_CTYPE 1
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#if !LUA_USE_CTYPE /* { */
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34
#include <limits.h>
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36
#include "llimits.h"
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#define MASK(B) (1 << (B))
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#define MASK(B) (1 << (B))
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** add 1 to char to allow index -1 (EOZ)
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#define testprop(c, p) (luai_ctype_[(c) + 1] & (p))
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#define testprop(c,p) (luai_ctype_[(c)+1] & (p))
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55
** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_'
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#define lislalpha(c) testprop(c, MASK(ALPHABIT))
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#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT)))
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#define lisdigit(c) testprop(c, MASK(DIGITBIT))
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#define lisspace(c) testprop(c, MASK(SPACEBIT))
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#define lisprint(c) testprop(c, MASK(PRINTBIT))
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#define lisxdigit(c) testprop(c, MASK(XDIGITBIT))
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#define lislalpha(c) testprop(c, MASK(ALPHABIT))
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#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT)))
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#define lisdigit(c) testprop(c, MASK(DIGITBIT))
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#define lisspace(c) testprop(c, MASK(SPACEBIT))
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#define lisprint(c) testprop(c, MASK(PRINTBIT))
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#define lisxdigit(c) testprop(c, MASK(XDIGITBIT))
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65
** this 'ltolower' only works for alphabetic characters
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#define ltolower(c) ((c) | ('A' ^ 'a'))
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#define ltolower(c) ((c) | ('A' ^ 'a'))
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70
/* two more entries for 0 and -1 (EOZ) */
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71
LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2];
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77
** use standard C ctypes
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#define lislalpha(c) (isalpha(c) || (c) == '_')
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#define lislalnum(c) (isalnum(c) || (c) == '_')
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#define lisdigit(c) (isdigit(c))
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#define lisspace(c) (isspace(c))
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#define lisprint(c) (isprint(c))
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#define lisxdigit(c) (isxdigit(c))
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#define ltolower(c) (tolower(c))
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#define lislalpha(c) (isalpha(c) || (c) == '_')
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#define lislalnum(c) (isalnum(c) || (c) == '_')
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#define lisdigit(c) (isdigit(c))
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#define lisspace(c) (isspace(c))
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#define lisprint(c) (isprint(c))
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#define lisxdigit(c) (isxdigit(c))
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#define ltolower(c) (tolower(c))