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/* NSC -- new scala compiler
* Copyright 2005 LAMP/EPFL
* @author
*/
// $Id$
package scala.tools.nsc.transform;
/** A base class for transforms.
* A transform contains a compiler phase which applies a tree transformer.
*/
abstract class InfoTransform extends Transform {
import global.{Symbol, Type, InfoTransformer, infoTransformers};
def transformInfo(sym: Symbol, tpe: Type): Type;
override def newPhase(prev: scala.tools.nsc.Phase): StdPhase = new Phase(prev);
protected def changesBaseClasses = true;
class Phase(prev: scala.tools.nsc.Phase) extends super.Phase(prev) {
if (infoTransformers.nextFrom(id).pid != id) {
val infoTransformer = new InfoTransformer {
val pid = id;
val changesBaseClasses = InfoTransform.this.changesBaseClasses;
def transform(sym: Symbol, tpe: Type): Type = transformInfo(sym, tpe);
}
infoTransformers.insert(infoTransformer)
}
}
}
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