Scala example source code file (JavaTask.scala)

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

Java - Scala tags/keywords

java, java, javatask, javatask, list, option, string, string, xms64m, xmx768m, xss768k, xx:maxpermsize=96m, xx:maxpermsize=96m

The Scala JavaTask.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala Parallel Testing               **
**    / __/ __// _ | / /  / _ |    (c) 2007-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala.tools
package partest
package ant

import org.apache.tools.ant.Task
import org.apache.tools.ant.taskdefs.Java
import org.apache.tools.ant.types.Environment

import scala.tools.nsc.io._
import scala.tools.nsc.util.ClassPath
import cmd.Spec._

class JavaTask extends Java {
  override def getTaskName()      = "partest"
  private val scalaRunnerClass    = "scala.tools.nsc.MainGenericRunner"  
  private val partestRunnerClass  = "scala.tools.partest.Runner"
  def defaultJvmArgs              = "-Xms64M -Xmx768M -Xss768K -XX:MaxPermSize=96M"

  protected def rootDir           = prop("partest.rootdir") getOrElse (baseDir / "test").path
  protected def partestJVMArgs    = prop("partest.jvm.args") getOrElse defaultJvmArgs
  protected def runnerArgs        = List("-usejavacp", partestRunnerClass, "--javaopts", partestJVMArgs)

  private def baseDir             = Directory(getProject.getBaseDir)
  private def prop(s: String)     = Option(getProject getProperty s)
  private def jvmline(s: String)  = returning(createJvmarg())(_ setLine s)
  private def addArg(s: String)   = returning(createArg())(_ setValue s)
  
  private def newKeyValue(key: String, value: String) =
    returning(new Environment.Variable)(x => { x setKey key ; x setValue value })

  def setDefaults() {
    setFork(true)
    setFailonerror(true)
    getProject.setSystemProperties()
    setClassname(scalaRunnerClass)
    addSysproperty(newKeyValue("partest.is-in-ant", "true"))
    jvmline(partestJVMArgs)
    runnerArgs foreach addArg

    // do we want basedir or rootDir to be the cwd?
    // setDir(Path(rootDir).jfile)
  }
  
  override def init() = {
    super.init()
    setDefaults()
  }
}