Scala example source code file (JavaPlatform.scala)

This example Scala source code file (JavaPlatform.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

boxedbooleanclass, boxednumberclass, comparableclass, javaplatform, javaserializableclass, javaserializableclass, list, list, nil, objectclass, objectclass, platform, symbol, symbol

The Scala JavaPlatform.scala source code

/* NSC -- new Scala compiler
 * Copyright 2005-2011 LAMP/EPFL
 * @author  Paul Phillips
 */

package scala.tools.nsc
package backend

import io.AbstractFile
import util.JavaClassPath
import util.ClassPath.{ JavaContext, DefaultJavaContext }
import scala.tools.util.PathResolver

trait JavaPlatform extends Platform[AbstractFile] {
  import global._
  import definitions._
  
  lazy val classPath  = new PathResolver(settings).result
  def rootLoader = new loaders.JavaPackageLoader(classPath)

  private def depAnalysisPhase =
    if (settings.make.isDefault) Nil
    else List(dependencyAnalysis)

  def platformPhases = List(
    flatten,    // get rid of inner classes
    liftcode,   // generate reified trees
    genJVM      // generate .class files
  ) ++ depAnalysisPhase
  
  lazy val externalEquals          = getMember(BoxesRunTimeClass, nme.equals_)
  lazy val externalEqualsNumNum    = getMember(BoxesRunTimeClass, "equalsNumNum")
  lazy val externalEqualsNumChar   = getMember(BoxesRunTimeClass, "equalsNumChar")
  lazy val externalEqualsNumObject = getMember(BoxesRunTimeClass, "equalsNumObject")
  
  /** We could get away with excluding BoxedBooleanClass for the
   *  purpose of equality testing since it need not compare equal
   *  to anything but other booleans, but it should be present in
   *  case this is put to other uses.
   */
  def isMaybeBoxed(sym: Symbol) = {
    (sym == ObjectClass) ||
    (sym == JavaSerializableClass) ||
    (sym == ComparableClass) ||
    (sym isNonBottomSubClass BoxedNumberClass) ||
    (sym isNonBottomSubClass BoxedCharacterClass) ||
    (sym isNonBottomSubClass BoxedBooleanClass)
  }
}