/*
** Copies values from State src to State dst.
*/
static void copy_values (lua_State *dst, lua_State *src, int i, int top) {
	for (; i <= top; i++) {
		switch (lua_type (src, i)) {
			case LUA_TNUMBER:
				lua_pushnumber (dst, lua_tonumber (src, i));
				break;
			case LUA_TBOOLEAN:
				lua_pushboolean (dst, lua_toboolean (src, i));
				break;
			case LUA_TSTRING: {
				const char *string = lua_tostring (src, i);
				size_t length = lua_strlen (src, i);
				lua_pushlstring (dst, string, length);
				break;
			}
			case LUA_TUSERDATA:
			case LUA_TLIGHTUSERDATA: {
				lua_pushlightuserdata (dst, lua_touserdata (src, i));
				break;
			}
			case LUA_TNIL:
			default:
				lua_pushnil (dst);
				break;
		}
	}
}