Source kit service terminated Editor functionality temporarily limited

这下可好。

Source kit service terminated Editor functionality temporarily limited

运行以下代码出现了以上的提示。。。另外，还压根就不知道这个是什么原因千万的。

stackoverflow 上面有人说这个是xcode6 beta的一个BUG。

class triangleAndSquare {
    var triangle: equilateralTriangle {
    willSet {
        square.sideLength = newValue.sideLength
    }
    }
    var square: square {
    willSet {
        triangle.sideLength = newValue.sideLength
    }
    }
    init (size: Double, name: String) {
        square = square(sideLength: size, name: name)
        triangle = equilateralTriangle(sideLength:size, name: name)
    }
}

swift语言中文版的19页。