/* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.codehaus.jam.provider;
import org.codehaus.jam.internal.elements.ElementContext;
import org.codehaus.jam.mutable.MClass;
/**
* <p>Composite implementation of JamClassBuilder. When building,
* the first one in the list to not return null wins.</p>
*
* @author Patrick Calahan <email: pcal-at-bea-dot-com>
*/
public class CompositeJamClassBuilder extends JamClassBuilder {
// ========================================================================
// Variables
private JamClassBuilder[] mBuilders;
// ========================================================================
// Constructors
public CompositeJamClassBuilder(JamClassBuilder[] builders) {
if (builders == null) throw new IllegalArgumentException("null builders");
mBuilders = builders;
}
// ========================================================================
// JamClassBuilder implementation
public void init(ElementContext ctx) {
for(int i=0; i<mBuilders.length; i++) mBuilders[i].init(ctx);
}
public MClass build(String pkg, String cname) {
MClass out = null;
for(int i=0; i<mBuilders.length; i++) {
out = mBuilders[i].build(pkg,cname);
if (out != null) return out;
}
return null;
}
}