1/* 2** $Id: lstring.h $ 3** String table (keep all strings handled by Lua) 4** See Copyright Notice in lua.h 5*/ 6 7#ifndef lstring_h 8#define lstring_h 9 10#include "lgc.h" 11#include "lobject.h" 12#include "lstate.h" 13 14 15/* 16** Memory-allocation error message must be preallocated (it cannot 17** be created after memory is exhausted) 18*/ 19#define MEMERRMSG "not enough memory" 20 21 22/* 23** Size of a TString: Size of the header plus space for the string 24** itself (including final '\0'). 25*/ 26#define sizelstring(l) (offsetof(TString, contents) + ((l) + 1) * sizeof(char)) 27 28#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ 29 (sizeof(s)/sizeof(char))-1)) 30 31 32/* 33** test whether a string is a reserved word 34*/ 35#define isreserved(s) ((s)->tt == LUA_VSHRSTR && (s)->extra > 0) 36 37 38/* 39** equality for short strings, which are always internalized 40*/ 41#define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b)) 42 43 44LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); 45LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); 46LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); 47LUAI_FUNC void luaS_resize (lua_State *L, int newsize); 48LUAI_FUNC void luaS_clearcache (global_State *g); 49LUAI_FUNC void luaS_init (lua_State *L); 50LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); 51LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue); 52LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); 53LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); 54LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); 55 56 57#endif 58