added support for strings as collections in 2.8

1 files changed, 54 insertions, 0 deletions

diff --git a/src/library/scalax/runtime/StringVector.scala b/src/library/scalax/runtime/StringVector.scala
new file mode 100644
index 0000000000..ee7a805449
--- /dev/null
+++ b/src/library/scalax/runtime/StringVector.scala
@@ -0,0 +1,54 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003-2007, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id: Buffer.scala 15799 2008-08-15 18:23:54Z odersky $
+
+
+package scalax.runtime
+
+import collection.immutable.Vector
+import collection.mutable.{ArrayBuffer, BuilderProxy}
+import collection.generic.covariant.VectorTemplate
+
+object StringVector {
+
+  implicit def unbox(sv: StringVector[Char]): String = sv.mkString
+
+}
+
+@cloneable
+abstract class StringVector[+A] extends VectorTemplate[StringVector, A] with Vector[A] with Boxed[String] {
+
+  /** The length of the string */
+  def length: Int
+
+  /** The element at given index */
+  def apply(idx: Int): A
+
+  /** Creates new builder for this collection */
+  def newBuilder[B] = new BuilderProxy[StringVector, B] {
+    val self = new ArrayBuffer[B]
+    def result: StringVector[B] = new StringVector[B] {
+      def length = self.length
+      def apply(n: Int) = self.apply(n)
+      override def foreach(f: B => Unit) = self.foreach(f)
+    }
+  }
+
+  def unbox: String = {
+    val sb = new StringBuilder
+    for (x <- this)
+      sb append x.asInstanceOf[Char]
+    sb.toString
+  }
+
+  override def toString = mkString
+
+}
+
+