Scala example source code file (Delimited.scala)

This example Scala source code file (Delimited.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

argumentdelimiter, array, boolean, char, charsequence, compiler, delimited, int, list, nil, nsc, string

The Delimited.scala Scala example source code

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

package scala.tools.nsc
package interpreter

import jline.console.completer.ArgumentCompleter.{ ArgumentDelimiter, ArgumentList }

class JLineDelimiter extends ArgumentDelimiter {
  def toJLine(args: List[String], cursor: Int) = args match {
    case Nil    => new ArgumentList(new Array[String](0), 0, 0, cursor)
    case xs     => new ArgumentList(xs.toArray, xs.size - 1, xs.last.length, cursor)
  }

  def delimit(buffer: CharSequence, cursor: Int) = {
    val p = Parsed(buffer.toString, cursor)
    toJLine(p.args, cursor)
  }
  def isDelimiter(buffer: CharSequence, cursor: Int) = Parsed(buffer.toString, cursor).isDelimiter
}

trait Delimited {
  self: Parsed =>

  def delimited: Char => Boolean
  def escapeChars: List[Char] = List('\\')

  /** Break String into args based on delimiting function.
   */
  protected def toArgs(s: String): List[String] =
    if (s == "") Nil
    else (s indexWhere isDelimiterChar) match {
      case -1   => List(s)
      case idx  => (s take idx) :: toArgs(s drop (idx + 1))
    }

  def isDelimiterChar(ch: Char) = delimited(ch)
  def isEscapeChar(ch: Char): Boolean = escapeChars contains ch
}