/*

** $Id: lstring.h $

** String table (keep all strings handled by Lua)

** See Copyright Notice in lua.h

*/

#ifndef lstring_h

#define lstring_h

#include "lgc.h"

#include "lobject.h"

#include "lstate.h"

/*

** Memory-allocation error message must be preallocated (it cannot

** be created after memory is exhausted)

*/

#define MEMERRMSG "not enough memory"

/*

** Size of a TString: Size of the header plus space for the string

** itself (including final '\0').

*/

#define sizelstring(l) (offsetof(TString, contents) ((l) 1) * sizeof(char))

#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \

(sizeof(s)/sizeof(char))-1))

/*

** test whether a string is a reserved word

*/

#define isreserved(s) ((s)->tt == LUA_VSHRSTR && (s)->extra > 0)

/*

** equality for short strings, which are always internalized

*/

#define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))

LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l,

unsigned int seed, size_t step);

LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);

LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);

LUAI_FUNC void luaS_resize (lua_State *L, int newsize);

LUAI_FUNC void luaS_clearcache (global_State *g);

LUAI_FUNC void luaS_init (lua_State *L);

LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);

LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);

LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);

LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);

LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);

#endif