阅读古诗，回答问题。
                                                                                                            山寺夜起
                                                                                                                江湜
                                                                                                 月升岩石巅，下照一溪烟。
                                                                                                 烟色如云白，流来野寺前。
                                                                                                 开门惜夜景，矫首看霜天。
                                                                                                 谁见无家客，山中独不眠。