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/*-------------------------------------------------------------------------*\
** ScalaCheck **
** Copyright (c) 2007-2013 Rickard Nilsson. All rights reserved. **
** http://www.scalacheck.org **
** **
** This software is released under the terms of the Revised BSD License. **
** There is NO WARRANTY. See the file LICENSE for the full text. **
\*------------------------------------------------------------------------ */
package org.scalacheck.util
import scala.collection._
trait Buildable[T,C[_]] {
def builder: mutable.Builder[T,C[T]]
def fromIterable(it: Traversable[T]): C[T] = {
val b = builder
b ++= it
b.result()
}
}
object Buildable {
implicit def buildableList[T] = new Buildable[T,List] {
def builder = new mutable.ListBuffer[T]
}
implicit def buildableStream[T] = new Buildable[T,Stream] {
def builder = (new mutable.ListBuffer[T]).mapResult(_.toStream)
}
implicit def buildableArray[T](implicit cm: ClassManifest[T]) =
new Buildable[T,Array] {
def builder = mutable.ArrayBuilder.make[T]
}
implicit def buildableMutableSet[T] = new Buildable[T,mutable.Set] {
def builder = new mutable.SetBuilder(mutable.Set.empty[T])
}
implicit def buildableImmutableSet[T] = new Buildable[T,immutable.Set] {
def builder = new mutable.SetBuilder(immutable.Set.empty[T])
}
implicit def buildableSet[T] = new Buildable[T,Set] {
def builder = new mutable.SetBuilder(Set.empty[T])
}
import java.util.ArrayList
implicit def buildableArrayList[T] = new Buildable[T,ArrayList] {
def builder = new mutable.Builder[T,ArrayList[T]] {
val al = new ArrayList[T]
def +=(x: T) = {
al.add(x)
this
}
def clear() = al.clear()
def result() = al
}
}
}
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