scodec.codecs.DoubleCodec.scala Maven / Gradle / Ivy
package scodec
package codecs
import java.nio.ByteBuffer
import scodec.bits.{ BitVector, ByteOrdering }
private[codecs] final class DoubleCodec(ordering: ByteOrdering) extends Codec[Double] {
private val byteOrder = ordering.toJava
override def sizeBound = SizeBound.exact(64)
override def encode(value: Double) = {
val buffer = ByteBuffer.allocate(8).order(byteOrder).putDouble(value)
buffer.flip()
Attempt.successful(BitVector.view(buffer))
}
override def decode(buffer: BitVector) =
buffer.acquire(64) match {
case Left(e) => Attempt.failure(Err.insufficientBits(64, buffer.size))
case Right(b) => Attempt.successful(DecodeResult(ByteBuffer.wrap(b.toByteArray).order(byteOrder).getDouble, buffer.drop(64)))
}
override def toString = "double"
}