Scala example source code file (package.scala)

This example Scala source code file (package.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

char, commandlineparser, list, nothing, string, t, unit

The package.scala Scala example source code

/* NSC -- new Scala compiler
 * Copyright 2005-2013 LAMP/EPFL
 * @author Paul Phillips
 */

package scala
package tools

package object cmd {
  def returning[T](x: T)(f: T => Unit): T = { f(x) ; x }

  // make some language features in this package compile without warning
  implicit def implicitConversions = scala.language.implicitConversions
  implicit def postfixOps = scala.language.postfixOps

  private[cmd] def debug(msg: String): Unit = println(msg)

  def runAndExit(body: => Unit): Nothing = {
    body
    sys.exit(0)
  }

  def toOpt(s: String): String             = if (s startsWith "--") s else "--" + s
  def fromOpt(s: String): String           = s stripPrefix "--"
  def toArgs(line: String): List[String]   = CommandLineParser tokenize line
  def fromArgs(args: List[String]): String = args mkString " "

  def stripQuotes(s: String): String = {
    def isQuotedBy(c: Char) = s.length > 0 && s.head == c && s.last == c
    if (List('"', '\'') exists isQuotedBy) s.tail.init else s
  }
}