// Copyright 2012 Google Inc. All Rights Reserved.
//
// 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.eclipse.che.ide.collections;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* Implementation that iterates array without gaps in index,
*
* @param <T>
* items type
*/
public class ArrayIterator<T> implements Iterator<T> {
private int index;
private final Array<T> items;
private boolean hasRemovedSinceNextCall;
public ArrayIterator(Array<T> items) {
this.items = items;
}
@Override
public boolean hasNext() {
return index < items.size();
}
@Override
public T next() {
if (index == items.size()) {
throw new NoSuchElementException();
}
T result = items.get(index);
index++;
hasRemovedSinceNextCall = false;
return result;
}
@Override
public void remove() {
if (hasRemovedSinceNextCall || index == 0) {
throw new IllegalStateException();
}
index--;
items.remove(index);
hasRemovedSinceNextCall = true;
}
}