问在Scala中设置二进制值的格式

EN

    def toBinaryString[A <: AnyVal](value: A, size: Int = 0): String = {
      val zerosX64: String = //maximum possible number of leading zeros
        "0" * 64

      val (valueAsBinaryString, typeSize) =
        value match {
          case valueAlmostTyped: Boolean =>
            (if (valueAlmostTyped) "1" else "0", 1)
          case valueAlmostTyped: Byte =>
            (valueAlmostTyped.toByte.toBinaryString.takeRight(8), 8) //take() fixes hidden upcast to Int in Byte.toBinaryString
          case valueAlmostTyped: Short =>
            (valueAlmostTyped.toShort.toBinaryString.takeRight(16), 16) //take() fixes hidden upcast to Int in Short.toBinaryString
          case valueAlmostTyped: Char =>
            (valueAlmostTyped.toChar.toBinaryString, 16)
          case valueAlmostTyped: Int =>
            (valueAlmostTyped.toInt.toBinaryString, 32)
          case valueAlmostTyped: Long =>
            (valueAlmostTyped.toLong.toBinaryString, 64)
          case _ =>
            throw new IllegalArgumentException(s"toBinaryString not implemented for this type [${value.getClass.getSimpleName}] - only implemented for Boolean, Byte, Short, Char, Int, and Long")
        }
        
      val newSize =
        if (size < 0) //model and fix the behavior of existing toBinaryString function on Byte, Short, Char, Int, and Long, and add for Binary
          valueAsBinaryString.length
        else
          if (size == 0) //zero fill to the bit size of the containing type
            typeSize
          else
            if (valueAsBinaryString.length > size) //possibly override the caller specified custom size value as it is smaller than the resulting valueAsBinaryString itself
              if (valueAsBinaryString.take(valueAsBinaryString.length - size + 1).exists(_ == '0')) //only override if there isn't a zero dropped (which includes protecting the sign by ensuring if all 1s preceded the 0, at least a single one is preserved
                valueAsBinaryString.length
              else //caller specified custom value
                size
            else //caller specified custom value
              size
      ( (
            if (newSize > valueAsBinaryString.length)
              zerosX64.take(newSize - valueAsBinaryString.length)
            else
              ""
        )
        + valueAsBinaryString.takeRight(newSize)
      )
    }