1/* BEGIN CSTYLED */ 2/* 3** $Id: lctype.h,v 1.12.1.1 2013/04/12 18:48:47 roberto Exp $ 4** 'ctype' functions for Lua 5** See Copyright Notice in lua.h 6*/ 7 8#ifndef lctype_h 9#define lctype_h 10 11#include <sys/lua/lua.h> 12 13 14/* 15** WARNING: the functions defined here do not necessarily correspond 16** to the similar functions in the standard C ctype.h. They are 17** optimized for the specific needs of Lua 18*/ 19 20#if !defined(LUA_USE_CTYPE) 21 22#if 'A' == 65 && '0' == 48 23/* ASCII case: can use its own tables; faster and fixed */ 24#define LUA_USE_CTYPE 0 25#else 26/* must use standard C ctype */ 27#define LUA_USE_CTYPE 1 28#endif 29 30#endif 31 32 33#if !LUA_USE_CTYPE /* { */ 34 35#include "llimits.h" 36 37 38#define ALPHABIT 0 39#define DIGITBIT 1 40#define PRINTBIT 2 41#define SPACEBIT 3 42#define XDIGITBIT 4 43 44 45#define MASK(B) (1 << (B)) 46 47 48/* 49** add 1 to char to allow index -1 (EOZ) 50*/ 51#define testprop(c,p) (luai_ctype_[(lu_byte)(c)+1] & (p)) 52 53/* 54** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_' 55*/ 56#define lislalpha(c) testprop(c, MASK(ALPHABIT)) 57#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT))) 58#define lisdigit(c) testprop(c, MASK(DIGITBIT)) 59#define lisspace(c) testprop(c, MASK(SPACEBIT)) 60#define lisprint(c) testprop(c, MASK(PRINTBIT)) 61#define lisxdigit(c) testprop(c, MASK(XDIGITBIT)) 62 63/* 64** this 'ltolower' only works for alphabetic characters 65*/ 66#define ltolower(c) ((c) | ('A' ^ 'a')) 67 68 69/* two more entries for 0 and -1 (EOZ) */ 70LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; 71 72 73#else /* }{ */ 74 75/* 76** use standard C ctypes 77*/ 78 79#include <ctype.h> 80 81 82#define lislalpha(c) (isalpha(c) || (c) == '_') 83#define lislalnum(c) (isalnum(c) || (c) == '_') 84#define lisdigit(c) (isdigit(c)) 85#define lisspace(c) (isspace(c)) 86#define lisprint(c) (isprint(c)) 87#define lisxdigit(c) (isxdigit(c)) 88 89#define ltolower(c) (tolower(c)) 90 91#endif /* } */ 92 93#endif 94/* END CSTYLED */ 95