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/**
* Copyright 2015 Santhosh Kumar Tekuri
*
* The JLibs authors license this file to you 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 jlibs.core.graph.sequences;
import jlibs.core.graph.Path;
import jlibs.core.graph.Sequence;
/**
* @author Santhosh Kumar T
*/
public class PathSequence extends AbstractSequence{
private Path path;
private Sequence delegate;
public PathSequence(Path path, Sequence delegate){
this.path = path;
this.delegate = delegate;
_reset();
}
/*-------------------------------------------------[ Advancing ]---------------------------------------------------*/
@Override
protected Path findNext(){
E elem = delegate.next();
return elem==null ? null : path.append(elem, index()+1);
}
/*-------------------------------------------------[ Reuse ]---------------------------------------------------*/
@Override
public void reset(){
super.reset();
_reset();
}
private void _reset(){
delegate.reset();
}
@Override
public Sequence copy(){
return new PathSequence(path, delegate.copy());
}
/*-------------------------------------------------[ Optimization ]---------------------------------------------------*/
@Override
public int length(){
return delegate.length();
}
}