2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
3 * This program and the accompanying materials are made available under the
4 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
5 * and is available at http://www.eclipse.org/legal/epl-v10.html
7 package org.opendaylight.yangtools.yang.data.api;
9 import com.google.common.base.Preconditions;
10 import com.google.common.collect.UnmodifiableIterator;
11 import java.util.Collection;
12 import java.util.Iterator;
13 import java.util.List;
14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
16 final class StackedPathArguments extends PathArgumentCollection {
17 private final Collection<PathArgument> base;
18 private final List<PathArgument> stack;
20 public StackedPathArguments(final YangInstanceIdentifier base, final List<PathArgument> stack) {
21 this.base = base.getPathArguments();
22 this.stack = Preconditions.checkNotNull(stack);
27 return stack.size() + base.size();
31 public boolean contains(final Object o) {
32 final PathArgument srch = (PathArgument) Preconditions.checkNotNull(o);
33 return stack.contains(srch) || base.contains(srch);
37 public UnmodifiableIterator<PathArgument> iterator() {
38 return new IteratorImpl(base, stack);
41 private static final class IteratorImpl extends UnmodifiableIterator<PathArgument> {
42 private final Iterator<PathArgument> stack;
43 private final Iterator<PathArgument> base;
45 IteratorImpl(final Iterable<PathArgument> base, final Iterable<PathArgument> stack) {
46 this.base = base.iterator();
47 this.stack = stack.iterator();
51 public boolean hasNext() {
52 return stack.hasNext();
56 public PathArgument next() {