Removed dead code.

(cherry picked from commit c03777b)

Conflicts:

	src/compiler/scala/tools/nsc/scratchpad/CommentWriter.scala

Author: odersky

src/compiler/scala/tools/nsc/scratchpad/CommentOutputStream.scala

@@ -21,92 +21,3 @@ object SourceInserter {
     (prefixes mkString "\n").toArray
   }
 }
-class SourceInserter(contents: Array[Char], start: Int = 0, tabInc: Int = 8) extends Writer {
-
-  private var buf = contents
-  private var offset = start
-  private var hilen = contents.length
-
-  def length = offset + hilen
-
-  private def currentColumn: Int = {
-    var i = offset
-    while (i > 0 && !isLineBreakChar(buf(i - 1))) i -= 1
-    var col = 0
-    while (i < offset) {
-      col = if (buf(i) == '\t') (col + tabInc) / tabInc * tabInc else col + 1
-      i += 1
-    }
-    col
-  }
-
-  private var col = currentColumn
-
-  def column = synchronized { col }
-
-  private def addCapacity(n: Int) = {
-    val newlength = length + n
-    while (newlength > buf.length) {
-      val buf1 = Array.ofDim[Char](buf.length * 2)
-      Array.copy(buf, 0, buf1, 0, offset)
-      Array.copy(buf, buf.length - hilen, buf1, buf1.length - hilen, hilen)
-      buf = buf1
-    }
-  }
-
-  private def insertChar(ch: Char) = {
-//  Console.err.print("["+ch+"]")
-    buf(offset) = ch
-    offset += 1
-    ch match {
-      case LF => col = 0
-      case '\t' => col = (col + tabInc) / tabInc * tabInc
-      case _ => col += 1
-    }
-  }
-
-  override def write(ch: Int) = synchronized {
-    addCapacity(1)
-    insertChar(ch.toChar)
-  }
-
-  override def write(chs: Array[Char], off: Int, len: Int) = synchronized {
-    addCapacity(len)
-    for (i <- off until off + len) insertChar(chs(i))
-  }
-
-  override def close() {
-  }
-
-  override def flush() {
-    // signal buffer change
-  }
-
-  def currentContents = synchronized {
-    if (length == buf.length) buf
-    else {
-      val res = Array.ofDim[Char](length)
-      Array.copy(buf, 0, res, 0, offset)
-      Array.copy(buf, buf.length - hilen, res, offset, hilen)
-      res
-    }
-  }
-
-  def backspace() = synchronized {
-    offset -= 1
-    if (offset > 0 && buf(offset) == LF && buf(offset - 1) == CR) offset -=1
-  }
-
-  def currentChar = synchronized {
-    buf(buf.length - hilen)
-  }
-
-  def skip(len: Int) = synchronized {
-    for (i <- 0 until len) {
-      val ch = currentChar
-      hilen -= 1
-      insertChar(ch)
-    }
-  }
-}
-