AT&T 2.0.19 Code drop, stage 1

[aaf/authz.git] / misc / rosetta / src / main / java / org / onap / aaf / misc / rosetta / marshal / ListIterator.java

diff --git a/misc/rosetta/src/main/java/org/onap/aaf/misc/rosetta/marshal/ListIterator.java b/misc/rosetta/src/main/java/org/onap/aaf/misc/rosetta/marshal/ListIterator.java
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+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. 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.
+ * ============LICENSE_END====================================================
+ *
+ */
+
+package org.onap.aaf.misc.rosetta.marshal;
+
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Need an Iterator that can peek the current value without changing
+ * @author Jonathan
+ *
+ * @param <T>
+ */
+final class ListIterator<T> implements Iterator<T> {
+       private T curr;
+       private Iterator<T> delg;
+       public ListIterator(List<T> list) {
+               curr = null;
+               delg = list.iterator(); 
+       }
+       @Override
+       public boolean hasNext() {
+               return delg.hasNext();
+       }
+
+       @Override
+       public T next() {
+               return curr = delg.hasNext()?delg.next():null;
+       }
+       
+       public T peek() {
+               return curr==null?next():curr;
+       }
+
+       @Override
+       public void remove() {
+               delg.remove();
+       }
+       
+}
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