Function lua_topointer

Source/Misc/lua/src/lua.c:2250–2261

LUA_API const void *lua_topointer (lua_State *L, int idx) {
StkId o = index2adr(L, idx);
switch (ttype(o)) {
case LUA_TTABLE: return hvalue(o);
case LUA_TFUNCTION: return clvalue(o);
case LUA_TTHREAD: return thvalue(o);
case LUA_TUSERDATA:
case LUA_TLIGHTUSERDATA:
return lua_touserdata(L, idx);
default: return NULL;
}
}