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+/* ____ ____ ____ ____ ______ *\
+** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala **
+** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL **
+** /_____/\____/\___/\____/____/ **
+\* */
+
+// $Id$
+
+package scalac.ast;
+
+{#Imports#}
+
+/**
+ * A tree copier that returns a new tree only if some fields have
+ * changed
+ */
+public class LazyTreeCopier implements TreeCopier {
+
+ //########################################################################
+ // Protected Fields
+
+ protected final TreeFactory make;
+
+ //########################################################################
+ // Public Constructors
+
+ public LazyTreeCopier(TreeFactory make) {
+ this.make = make;
+ }
+
+ //########################################################################
+ // Public Methods
+
+ {#TreeMethods#}
+
+ //########################################################################
+}