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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.nsc
package interpreter
package session
/** A straight scalification of the jline interface which mixes
* in the sparse jline-independent one too.
*/
trait JLineHistory extends JHistory with History {
def size: Int
def isEmpty: Boolean
def index: Int
def clear(): Unit
def get(index: Int): CharSequence
def add(line: CharSequence): Unit
def replace(item: CharSequence): Unit
def entries(index: Int): JListIterator[JEntry]
def entries(): JListIterator[JEntry]
def iterator: JIterator[JEntry]
def current(): CharSequence
def previous(): Boolean
def next(): Boolean
def moveToFirst(): Boolean
def moveToLast(): Boolean
def moveTo(index: Int): Boolean
def moveToEnd(): Unit
}
object JLineHistory {
class JLineFileHistory extends SimpleHistory with FileBackedHistory {
override def add(item: CharSequence): Unit = {
if (!isEmpty && last == item)
repldbg("Ignoring duplicate entry '" + item + "'")
else {
super.add(item)
addLineToFile(item)
}
}
override def toString = "History(size = " + size + ", index = " + index + ")"
}
def apply(): JLineHistory = try new JLineFileHistory catch { case x: Exception => new SimpleHistory() }
}
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