Scala example source code file (ComposeSyntax.scala)

This example Scala source code file (ComposeSyntax.scala) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Scala by Example" ^TM.

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Java - Scala tags/keywords

composeops, tocomposeops, tocomposeops0, unapply2

The ComposeSyntax.scala Scala example source code

package scalaz
package syntax

/** Wraps a value `self` and provides methods related to `Compose` */
final class ComposeOps[F[_, _],A, B] private[syntax](val self: F[A, B])(implicit val F: Compose[F]) extends Ops[F[A, B]] {
  ////
  final def <<<[C](x: F[C, A]): F[C, B] =
    F.compose(self, x)

  final def ⋘[C](x: F[C, A]): F[C, B] =
    <<<(x)

  final def >>>[C](x: F[B, C]): F[A, C] =
    F.compose(x, self)

  final def ⋙[C](x: F[B, C]): F[A, C] =
    >>>(x)
  ////
}

sealed trait ToComposeOps0 {
  implicit def ToComposeOpsUnapply[FA](v: FA)(implicit F0: Unapply2[Compose, FA]) =
    new ComposeOps[F0.M,F0.A,F0.B](F0(v))(F0.TC)

}

trait ToComposeOps extends ToComposeOps0 {

  implicit def ToComposeOps[F[_, _],A, B](v: F[A, B])(implicit F0: Compose[F]) =
    new ComposeOps[F,A, B](v)


  implicit def ToComposeVFromKleisliLike[G[_], F[G[_], _, _],A, B](v: F[G, A, B])(implicit F0: Compose[F[G, ?, ?]]) =
    new ComposeOps[F[G, ?, ?], A, B](v)(F0)

  ////
  ////
}

trait ComposeSyntax[F[_, _]]  {
  implicit def ToComposeOps[A, B](v: F[A, B]): ComposeOps[F, A, B] = new ComposeOps[F, A, B](v)(ComposeSyntax.this.F)

  def F: Compose[F]
  ////

  ////
}