1 files changed, 24 insertions, 1 deletions
diff --git a/src/compiler/scala/tools/nsc/interpreter/package.scala b/src/compiler/scala/tools/nsc/interpreter/package.scala
index c59cf8228a..3a10547d81 100644
--- a/src/compiler/scala/tools/nsc/interpreter/package.scala
+++ b/src/compiler/scala/tools/nsc/interpreter/package.scala
@@ -5,12 +5,32 @@
 
 package scala.tools.nsc
 
+/** The main REPL related classes and values are as follows.
+ *  In addition to standard compiler classes Global and Settings, there are:
+ *
+ *  History: an interface for session history.
+ *  Completion: an interface for tab completion.
+ *  ILoop (formerly InterpreterLoop): The umbrella class for a session.
+ *  IMain (formerly Interpreter): Handles the evolving state of the session
+ *    and handles submitting code to the compiler and handling the output.
+ *  InteractiveReader: how ILoop obtains input.
+ *  History: an interface for session history.
+ *  Completion: an interface for tab completion.
+ *  Power: a repository for more advanced/experimental features.
+ *
+ *  ILoop contains { in: InteractiveReader, intp: IMain, settings: Settings, power: Power }
+ *  InteractiveReader contains { history: History, completion: Completion }
+ *  IMain contains { global: Global }
+ */
 package object interpreter {
   private[nsc] val DebugProperty = "scala.repl.debug"
   private[nsc] val PowerProperty = "scala.repl.power"
   private[nsc] var _debug = false
   private[nsc] def isReplDebug = _debug || (sys.props contains DebugProperty)
 
+  type JClass = java.lang.Class[_]
+  private[nsc] implicit def enrichClass[T](clazz: Class[T]) = new RichClass[T](clazz)
+
   /** Debug output */
   def repldbg(msg: String) = if (isReplDebug) Console println msg
 
@@ -22,6 +42,9 @@ package object interpreter {
     x
   }
 
+  private[nsc] def isQuoted(s: String) =
+    (s.length >= 2) && (s.head == s.last) && ("\"'" contains s.head)
+
   /** Heuristically strip interpreter wrapper prefixes
    *  from an interpreter output string.
    */
@@ -31,7 +54,7 @@ package object interpreter {
   }
 
   /** Class objects */
-  def classForName(name: String): Option[Class[_]] =
+  def classForName(name: String): Option[JClass] =
     try Some(Class forName name)
     catch { case _: ClassNotFoundException | _: SecurityException => None }
 }