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/* ____ ____ ____ ____ ______ *\
** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala **
** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL **
** /_____/\____/\___/\____/____/ **
\* */
// $Id$
package scalac.ast;
import scalac.Global;
import scalac.Unit;
{#Imports#}
/**
* A default transformer class. This class traverses the abstract
* syntax tree but does not do any transformations.
*/
public class Transformer {
//########################################################################
// Public Fields
/** The global environment */
public final Global global;
/** The tree factory */
public final TreeFactory make;
/** The tree copier */
public final TreeCopier copy;
/** A tree generator */
public final TreeGen gen;
//########################################################################
// Public Constructors
public Transformer(Global global) {
this(global, global.make);
}
public Transformer(Global global, TreeFactory make) {
this(global, make, new LazyTreeCopier(make));
}
public Transformer(Global global, TreeFactory make, TreeCopier copy) {
this.global = global;
this.make = make;
this.copy = copy;
this.gen = global.treeGen;
}
//########################################################################
// Public Methods
public void apply(Unit[] units) {
for (int i = 0; i < units.length; i++) apply(units[i]);
}
public void apply(Unit unit) {
unit.global.log("transforming " + unit);
unit.body = transform(unit.body);
}
public Tree transform(Tree tree) {
{#TreeSwitch#}
}
public Template transform(Template tree) {
return (Template)transform((Tree)tree);
}
{#TransformArrays#}
//########################################################################
}
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