Scala example source code file (package.scala)

This example Scala source code file (package.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

any, charactercodingexception, file, file, int, list, path, path, string, string, t, t, unit

The Scala package.scala source code

/* NEST (New Scala Test)
 * Copyright 2007-2011 LAMP/EPFL
 */

package scala.tools

import nsc.io.{ File, Path, Process, Directory }
import java.nio.charset.CharacterCodingException

package object partest {  
  /** The CharacterCodingExceptions are thrown at least on windows trying
   *  to read a file like script/utf-8.scala
   */
  private[partest] def safeSlurp(f: File) = 
    try if (f.exists) f.slurp() else ""
    catch { case _: CharacterCodingException  => "" }

  private[partest] def safeLines(f: File)     = safeSlurp(f) split """\r\n|\r|\n""" toList
  private[partest] def safeArgs(f: File)      = toArgs(safeSlurp(f))  
  private[partest] def isJava(f: Path)        = f.isFile && (f hasExtension "java")
  private[partest] def isScala(f: Path)       = f.isFile && (f hasExtension "scala")
  private[partest] def isJavaOrScala(f: Path) = isJava(f) || isScala(f)
  
  private[partest] def toArgs(line: String) = cmd toArgs line
  private[partest] def fromArgs(args: List[String]) = cmd fromArgs args

  /** Strings, argument lists, etc. */
  
  private[partest] def fromAnyArgs(args: List[Any]) = args mkString " " // separate to avoid accidents
  private[partest] def toStringTrunc(x: Any, max: Int = 240) = {
    val s = x.toString
    if (s.length < max) s
    else (s take max) + " [...]"
  }
  private[partest] def setProp(k: String, v: String) = scala.util.Properties.setProp(k, v)

  /** Pretty self explanatory. */
  def printAndExit(msg: String): Unit = {
    println(msg)
    exit(1)
  }

  /** Apply a function and return the passed value */
  def returning[T](x: T)(f: T => Unit): T = { f(x) ; x }
}