platform.scala

JAVA 语言的函数式编程扩展

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2002-2008, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

// $Id: Platform.scala 14192 2008-02-28 17:57:25Z michelou $


package scala.compat


import Predef._

object Platform {

  type StackOverflowError = System.StackOverflowException
  type ConcurrentModificationException = System.Exception

  /**
   *  @param src     ..
   *  @param srcPos  ..
   *  @param dest    ..
   *  @param destPos ..
   *  @param length  ..
   */
  def arraycopy(src: AnyRef, srcPos: Int, dest: AnyRef, destPos: Int, length: Int) {
    if (!src.isInstanceOf[System.Array]) throw new Exception("src for arraycopy is not an Array; use scala.Array.copy for boxed arrays");
    if (!dest.isInstanceOf[System.Array]) throw new Exception("dest for arraycopy is not an Array; use scala.Array.copy for boxed arrays");
    System.Array.Copy(src.asInstanceOf[System.Array], srcPos, dest.asInstanceOf[System.Array], destPos, length)
  }

  /** Create array of the same type as arrayInstance with the given
   *  length.
   *
   *  @param elemClass ..
   *  @param length    ..
   *  @return          ..
   */
  def createArray(elemClass: Class[_], length: Int): AnyRef =
    System.Array.CreateInstance(elemClass, length)

  def arrayclear(arr: Array[Int]) {
    System.Array.Clear(arr.asInstanceOf[System.Array], 0, arr.length)
  }

  def getClassForName(name: String): Class[_] = System.Type.GetType(name)

  val EOL = System.Environment.NewLine

  def currentTime: Long = 0L
/* // compiler crash :-(
  private lazy val baseTicks = (new System.DateTime(1970, 1, 1, 0, 0, 0)).Ticks
  def currentTime: Long = {
    val nowTicks = System.DateTime.UtcNow.Ticks
    (nowTicks - baseTicks) / 10000
  }
*/
  def collectGarbage { System.GC.Collect() }

}