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/* NSC -- new Scala compiler
* Copyright 2005-2010 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.nsc
package object interpreter {
/** Tracing */
def tracing[T](msg: String)(x: T): T = { println("(" + msg + ") " + x) ; x }
/** Frequency counter */
def freq[T](seq: Seq[T]) = seq groupBy identity mapValues (_.length)
/** null becomes "", otherwise identity */
def onull(s: String) = if (s == null) "" else s
/** Heuristically strip interpreter wrapper prefixes
* from an interpreter output string.
*/
def stripWrapperGunk(str: String): String = {
val wrapregex = """(line[0-9]+\$object[$.])?(\$iw[$.])*"""
str.replaceAll(wrapregex, "")
}
/** Class objects */
def classForName(name: String): Option[Class[_]] =
try Some(Class forName name)
catch { case _: ClassNotFoundException | _: SecurityException => None }
}
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