Scala example source code file (ClassloadVerify.scala)

This example Scala source code file (ClassloadVerify.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

ant, array, checking, classload, classloadverify, member, none, path, reference, scalamatchingtask, some, utilities

The ClassloadVerify.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala Ant Tasks                      **
**    / __/ __// _ | / /  / _ |    (c) 2005-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala.tools.ant

import org.apache.tools.ant.Project
import org.apache.tools.ant.types.{Path, Reference}
import scala.collection.JavaConverters._
import scala.tools.util.VerifyClass

class ClassloadVerify extends ScalaMatchingTask {

  /** The class path to use for this compilation. */
  protected var classpath: Option[Path] = None

  /** Sets the `classpath` attribute. Used by [[http://ant.apache.org Ant]].
   *  @param input The value of `classpath`. */
  def setClasspath(input: Path) {
    classpath = Some(input)
  }

  def setClasspathref(input: Reference) {
    val p = new Path(getProject())
    p.setRefid(input)
    classpath = Some(p)
  }

  private def getClasspath: Array[String] = classpath match {
    case None     => buildError("Member 'classpath' is empty.")
    case Some(x)  => x.list.toArray
  }

  override def execute(): Unit = {
    val results = VerifyClass.run(getClasspath).asScala
    results foreach (r => log("Checking: " + r, Project.MSG_DEBUG))
    val errors = for((name, error) <- results; if error != null) yield (name,error)
    if(errors.isEmpty) {
      // TODO - Log success
      log("Classload verification succeeded with " + results.size + " classes.", Project.MSG_INFO)
    } else {
      for((name, error) <- errors) {
         log(name + " failed verification with: " + error, Project.MSG_ERR)
      }
      buildError(errors.size + " classload verification errors on " + results.size + " classes.")
    }
  }

}