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.Iterator;
12 import java.util.List;
13 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
15 final class StackedPathArguments extends PathArgumentList {
16 private final List<PathArgument> base;
17 private final List<PathArgument> stack;
19 public StackedPathArguments(final YangInstanceIdentifier base, final List<PathArgument> stack) {
20 this.base = base.getPathArguments();
21 this.stack = Preconditions.checkNotNull(stack);
26 return stack.size() + base.size();
30 public boolean contains(final Object o) {
31 final PathArgument srch = (PathArgument) Preconditions.checkNotNull(o);
32 return stack.contains(srch) || base.contains(srch);
36 public final PathArgument get(final int index) {
37 if (index < base.size()) {
38 return base.get(index);
40 return stack.get(index - base.size());
45 public final int indexOf(final Object o) {
46 final PathArgument srch = (PathArgument) Preconditions.checkNotNull(o);
48 int ret = base.indexOf(srch);
50 ret = stack.indexOf(srch);
52 return base.size() + ret;
59 public final int lastIndexOf(final Object o) {
60 final PathArgument srch = (PathArgument) Preconditions.checkNotNull(o);
62 final int ret = stack.lastIndexOf(srch);
64 return base.size() + ret;
67 return base.lastIndexOf(srch);
71 public UnmodifiableIterator<PathArgument> iterator() {
72 return new IteratorImpl(base, stack);
75 private static final class IteratorImpl extends UnmodifiableIterator<PathArgument> {
76 private final Iterator<PathArgument> stack;
77 private final Iterator<PathArgument> base;
79 IteratorImpl(final Iterable<PathArgument> base, final Iterable<PathArgument> stack) {
80 this.base = base.iterator();
81 this.stack = stack.iterator();
85 public boolean hasNext() {
86 return stack.hasNext();
90 public PathArgument next() {