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39 lines
801 B
C
39 lines
801 B
C
/*
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** $Id: lctype.h,v 1.3 2009/03/10 17:42:33 roberto Exp roberto $
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** 'ctype' functions for Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef lctype_h
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#define lctype_h
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#include <limits.h>
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#include "lua.h"
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#define ALPHABIT 0
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#define DIGITBIT 1
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#define PRINTBIT 2
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#define SPACEBIT 3
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#define XDIGITBIT 4
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#define MASK(B) (1 << (B))
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/* 'lalpha' (Lua alphabetic) includes '_' */
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#define lislalpha(x) (luai_ctype_[x] & MASK(ALPHABIT))
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/* ditto */
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#define lislalnum(x) (luai_ctype_[x] & (MASK(ALPHABIT) | MASK(DIGITBIT)))
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#define lisdigit(x) (luai_ctype_[x] & MASK(DIGITBIT))
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#define lisspace(x) (luai_ctype_[x] & MASK(SPACEBIT))
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#define lisprint(x) (luai_ctype_[x] & MASK(PRINTBIT))
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#define lisxdigit(x) (luai_ctype_[x] & MASK(XDIGITBIT))
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LUAI_DATA const char luai_ctype_[UCHAR_MAX + 1];
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#endif
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