Function loadline

src/lua/lua_environment.cpp:164–176

** Read a line and try to load (compile) it first as an expression (by ** adding "return " in front of it) and second as a statement. Return ** the final status of load/call with the resulting function (if any) ** in the top of the stack. */

** in the top of the stack.
*/
static int loadline(lua_State *L)
{
	int status;
	if ((status = addreturn(L)) != LUA_OK) { /* 'return ...' did not work? */
		// status = multiline(L);  /* try as command, maybe with continuation lines */
		size_t len;
		const char *line = lua_tolstring(L, 1, &len);  /* get what it has */
		status = luaL_loadbuffer(L, line, len, "=stdin");  /* try it */
	}
	lua_remove(L, 1);  /* remove line from the stack */
	lua_assert(lua_gettop(L) == 1);
	return status;
}

/*
** Check whether 'status' is not OK and, if so, prints the error