1323530Savg/* 2323530Savg** $Id: lctype.h,v 1.12.1.1 2013/04/12 18:48:47 roberto Exp $ 3323530Savg** 'ctype' functions for Lua 4323530Savg** See Copyright Notice in lua.h 5323530Savg*/ 6323530Savg 7323530Savg#ifndef lctype_h 8323530Savg#define lctype_h 9323530Savg 10323530Savg#include "lua.h" 11323530Savg 12323530Savg 13323530Savg/* 14323530Savg** WARNING: the functions defined here do not necessarily correspond 15323530Savg** to the similar functions in the standard C ctype.h. They are 16323530Savg** optimized for the specific needs of Lua 17323530Savg*/ 18323530Savg 19323530Savg#if !defined(LUA_USE_CTYPE) 20323530Savg 21323530Savg#if 'A' == 65 && '0' == 48 22323530Savg/* ASCII case: can use its own tables; faster and fixed */ 23323530Savg#define LUA_USE_CTYPE 0 24323530Savg#else 25323530Savg/* must use standard C ctype */ 26323530Savg#define LUA_USE_CTYPE 1 27323530Savg#endif 28323530Savg 29323530Savg#endif 30323530Savg 31323530Savg 32323530Savg#if !LUA_USE_CTYPE /* { */ 33323530Savg 34323530Savg#include "llimits.h" 35323530Savg 36323530Savg 37323530Savg#define ALPHABIT 0 38323530Savg#define DIGITBIT 1 39323530Savg#define PRINTBIT 2 40323530Savg#define SPACEBIT 3 41323530Savg#define XDIGITBIT 4 42323530Savg 43323530Savg 44323530Savg#define MASK(B) (1 << (B)) 45323530Savg 46323530Savg 47323530Savg/* 48323530Savg** add 1 to char to allow index -1 (EOZ) 49323530Savg*/ 50323530Savg#define testprop(c,p) (luai_ctype_[(c)+1] & (p)) 51323530Savg 52323530Savg/* 53323530Savg** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_' 54323530Savg*/ 55323530Savg#define lislalpha(c) testprop(c, MASK(ALPHABIT)) 56323530Savg#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT))) 57323530Savg#define lisdigit(c) testprop(c, MASK(DIGITBIT)) 58323530Savg#define lisspace(c) testprop(c, MASK(SPACEBIT)) 59323530Savg#define lisprint(c) testprop(c, MASK(PRINTBIT)) 60323530Savg#define lisxdigit(c) testprop(c, MASK(XDIGITBIT)) 61323530Savg 62323530Savg/* 63323530Savg** this 'ltolower' only works for alphabetic characters 64323530Savg*/ 65323530Savg#define ltolower(c) ((c) | ('A' ^ 'a')) 66323530Savg 67323530Savg 68323530Savg/* two more entries for 0 and -1 (EOZ) */ 69323530SavgLUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; 70323530Savg 71323530Savg 72323530Savg#else /* }{ */ 73323530Savg 74323530Savg/* 75323530Savg** use standard C ctypes 76323530Savg*/ 77323530Savg 78323530Savg#include <ctype.h> 79323530Savg 80323530Savg 81323530Savg#define lislalpha(c) (isalpha(c) || (c) == '_') 82323530Savg#define lislalnum(c) (isalnum(c) || (c) == '_') 83323530Savg#define lisdigit(c) (isdigit(c)) 84323530Savg#define lisspace(c) (isspace(c)) 85323530Savg#define lisprint(c) (isprint(c)) 86323530Savg#define lisxdigit(c) (isxdigit(c)) 87323530Savg 88323530Savg#define ltolower(c) (tolower(c)) 89323530Savg 90323530Savg#endif /* } */ 91323530Savg 92323530Savg#endif 93323530Savg 94