1 /* 2 ** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $ 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 #define sizelstring(l) (sizeof(union UTString) + ((l) + 1) * sizeof(char)) 16 17 #define sizeludata(l) (sizeof(union UUdata) + (l)) 18 #define sizeudata(u) sizeludata((u)->len) 19 20 #define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ 21 (sizeof(s)/sizeof(char))-1)) 22 23 24 /* 25 ** test whether a string is a reserved word 26 */ 27 #define isreserved(s) ((s)->tt == LUA_TSHRSTR && (s)->extra > 0) 28 29 30 /* 31 ** equality for short strings, which are always internalized 32 */ 33 #define eqshrstr(a,b) check_exp((a)->tt == LUA_TSHRSTR, (a) == (b)) 34 35 36 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); 37 LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); 38 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); 39 LUAI_FUNC void luaS_resize (lua_State *L, int newsize); 40 LUAI_FUNC void luaS_clearcache (global_State *g); 41 LUAI_FUNC void luaS_init (lua_State *L); 42 LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); 43 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s); 44 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); 45 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); 46 LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); 47 48 49 #endif 50