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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2007, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.runtime
import Predef._
import scala.collection.mutable.{Buffer,ArrayBuffer}
final class RichStringBuilder(val self : StringBuilder) extends RandomAccessSeq.Mutable[Char] with Proxy with Buffer[Char] {
override def length = self.length
override def apply(idx : Int) = self.charAt(idx)
override def mkString = self.toString
override def update(idx : Int, c : Char) = self.setCharAt(idx, c)
override def +=(c: Char): Unit = self append c
override def ++=(iter: Iterable[Char]): Unit = iter match {
case str : RichString => self append str.self
case str : Array[Char] => self append str
case iter => super.++=(iter)
}
override def ++(iter: Iterable[Char]): RichStringBuilder = { this ++= iter; this }
override def ++[B >: Char](that : Iterable[B]) : RandomAccessSeq[B] = {
val buf = new ArrayBuffer[B]
this copyToBuffer buf
that copyToBuffer buf
buf
}
override def insertAll(idx: Int, iter: Iterable[Char]): Unit = iter match {
case str : RichString => self.insert(idx, str)
case str : Array[Char] => self.insert(idx, str)
case iter =>
val i = iter.elements
var jdx = idx
while (i.hasNext) {
self.insert(jdx, i.next)
jdx = jdx + 1
}
}
override def +:(c : Char) = self.insert(0, c)
def ensureSize(size : Int) = self.ensureCapacity(size)
override def remove(idx : Int) = {
val c = self.charAt(idx)
self.deleteCharAt(idx)
c
}
override def clear = self.setLength(0)
}
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