1*088332b5SXin Li /* 2*088332b5SXin Li ** $Id: lstring.h $ 3*088332b5SXin Li ** String table (keep all strings handled by Lua) 4*088332b5SXin Li ** See Copyright Notice in lua.h 5*088332b5SXin Li */ 6*088332b5SXin Li 7*088332b5SXin Li #ifndef lstring_h 8*088332b5SXin Li #define lstring_h 9*088332b5SXin Li 10*088332b5SXin Li #include "lgc.h" 11*088332b5SXin Li #include "lobject.h" 12*088332b5SXin Li #include "lstate.h" 13*088332b5SXin Li 14*088332b5SXin Li 15*088332b5SXin Li /* 16*088332b5SXin Li ** Memory-allocation error message must be preallocated (it cannot 17*088332b5SXin Li ** be created after memory is exhausted) 18*088332b5SXin Li */ 19*088332b5SXin Li #define MEMERRMSG "not enough memory" 20*088332b5SXin Li 21*088332b5SXin Li 22*088332b5SXin Li /* 23*088332b5SXin Li ** Size of a TString: Size of the header plus space for the string 24*088332b5SXin Li ** itself (including final '\0'). 25*088332b5SXin Li */ 26*088332b5SXin Li #define sizelstring(l) (offsetof(TString, contents) + ((l) + 1) * sizeof(char)) 27*088332b5SXin Li 28*088332b5SXin Li #define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ 29*088332b5SXin Li (sizeof(s)/sizeof(char))-1)) 30*088332b5SXin Li 31*088332b5SXin Li 32*088332b5SXin Li /* 33*088332b5SXin Li ** test whether a string is a reserved word 34*088332b5SXin Li */ 35*088332b5SXin Li #define isreserved(s) ((s)->tt == LUA_VSHRSTR && (s)->extra > 0) 36*088332b5SXin Li 37*088332b5SXin Li 38*088332b5SXin Li /* 39*088332b5SXin Li ** equality for short strings, which are always internalized 40*088332b5SXin Li */ 41*088332b5SXin Li #define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b)) 42*088332b5SXin Li 43*088332b5SXin Li 44*088332b5SXin Li LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, 45*088332b5SXin Li unsigned int seed, size_t step); 46*088332b5SXin Li LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); 47*088332b5SXin Li LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); 48*088332b5SXin Li LUAI_FUNC void luaS_resize (lua_State *L, int newsize); 49*088332b5SXin Li LUAI_FUNC void luaS_clearcache (global_State *g); 50*088332b5SXin Li LUAI_FUNC void luaS_init (lua_State *L); 51*088332b5SXin Li LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); 52*088332b5SXin Li LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue); 53*088332b5SXin Li LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); 54*088332b5SXin Li LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); 55*088332b5SXin Li LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); 56*088332b5SXin Li 57*088332b5SXin Li 58*088332b5SXin Li #endif 59