HIGUCHI Yuta | 9092db8 | 2016-01-03 18:45:01 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
HIGUCHI Yuta | 9092db8 | 2016-01-03 18:45:01 -0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onlab.util; |
| 17 | |
| 18 | import static com.google.common.base.Preconditions.checkNotNull; |
| 19 | |
| 20 | import java.util.Collection; |
| 21 | import java.util.Deque; |
| 22 | import java.util.Iterator; |
| 23 | import java.util.Spliterator; |
| 24 | import java.util.function.Consumer; |
| 25 | import java.util.function.Predicate; |
| 26 | import java.util.stream.Stream; |
| 27 | import com.google.common.collect.Iterators; |
| 28 | |
| 29 | /** |
| 30 | * Unmodifiable view of the specified Deque. |
| 31 | */ |
| 32 | public class UnmodifiableDeque<E> implements Deque<E> { |
| 33 | |
| 34 | private final Deque<E> deque; |
| 35 | |
| 36 | UnmodifiableDeque(Deque<E> deque) { |
| 37 | this.deque = checkNotNull(deque); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Returns an unmodifiable view of the specified Deque. |
| 42 | * |
Jian Li | 7f256f5 | 2016-01-24 15:08:05 -0800 | [diff] [blame] | 43 | * @param <T> type |
HIGUCHI Yuta | 9092db8 | 2016-01-03 18:45:01 -0800 | [diff] [blame] | 44 | * @param deque underlying {@link Deque} to use. |
| 45 | * @return unmodifiable view of {@code deque} |
| 46 | */ |
| 47 | public static <T> Deque<T> unmodifiableDeque(Deque<T> deque) { |
| 48 | return new UnmodifiableDeque<T>(deque); |
| 49 | } |
| 50 | |
| 51 | @Override |
| 52 | public void forEach(Consumer<? super E> action) { |
| 53 | deque.forEach(action); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public void addFirst(E e) { |
| 58 | throw new UnsupportedOperationException(); |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public boolean isEmpty() { |
| 63 | return deque.isEmpty(); |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | public void addLast(E e) { |
| 68 | throw new UnsupportedOperationException(); |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public Object[] toArray() { |
| 73 | return deque.toArray(); |
| 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public boolean offerFirst(E e) { |
| 78 | throw new UnsupportedOperationException(); |
| 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public <T> T[] toArray(T[] a) { |
| 83 | return deque.toArray(a); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public boolean offerLast(E e) { |
| 88 | throw new UnsupportedOperationException(); |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public E removeFirst() { |
| 93 | throw new UnsupportedOperationException(); |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public E removeLast() { |
| 98 | throw new UnsupportedOperationException(); |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public E pollFirst() { |
| 103 | throw new UnsupportedOperationException(); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public E pollLast() { |
| 108 | throw new UnsupportedOperationException(); |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public E getFirst() { |
| 113 | return deque.getFirst(); |
| 114 | } |
| 115 | |
| 116 | @Override |
| 117 | public E getLast() { |
| 118 | return deque.getLast(); |
| 119 | } |
| 120 | |
| 121 | @Override |
| 122 | public E peekFirst() { |
| 123 | return deque.peekFirst(); |
| 124 | } |
| 125 | |
| 126 | @Override |
| 127 | public E peekLast() { |
| 128 | return deque.peekLast(); |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public boolean removeFirstOccurrence(Object o) { |
| 133 | throw new UnsupportedOperationException(); |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public boolean removeLastOccurrence(Object o) { |
| 138 | throw new UnsupportedOperationException(); |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public boolean containsAll(Collection<?> c) { |
| 143 | return deque.containsAll(c); |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public boolean add(E e) { |
| 148 | throw new UnsupportedOperationException(); |
| 149 | } |
| 150 | |
| 151 | @Override |
| 152 | public boolean addAll(Collection<? extends E> c) { |
| 153 | throw new UnsupportedOperationException(); |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public boolean offer(E e) { |
| 158 | throw new UnsupportedOperationException(); |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | public boolean removeAll(Collection<?> c) { |
| 163 | throw new UnsupportedOperationException(); |
| 164 | } |
| 165 | |
| 166 | @Override |
| 167 | public E remove() { |
| 168 | throw new UnsupportedOperationException(); |
| 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public E poll() { |
| 173 | throw new UnsupportedOperationException(); |
| 174 | } |
| 175 | |
| 176 | @Override |
| 177 | public E element() { |
| 178 | return deque.element(); |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public boolean removeIf(Predicate<? super E> filter) { |
| 183 | throw new UnsupportedOperationException(); |
| 184 | } |
| 185 | |
| 186 | @Override |
| 187 | public E peek() { |
| 188 | return deque.peek(); |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public void push(E e) { |
| 193 | throw new UnsupportedOperationException(); |
| 194 | } |
| 195 | |
| 196 | @Override |
| 197 | public boolean retainAll(Collection<?> c) { |
| 198 | throw new UnsupportedOperationException(); |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public E pop() { |
| 203 | throw new UnsupportedOperationException(); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public boolean remove(Object o) { |
| 208 | throw new UnsupportedOperationException(); |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public void clear() { |
| 213 | throw new UnsupportedOperationException(); |
| 214 | } |
| 215 | |
| 216 | @Override |
| 217 | public boolean equals(Object o) { |
| 218 | return deque.equals(o); |
| 219 | } |
| 220 | |
| 221 | @Override |
| 222 | public boolean contains(Object o) { |
| 223 | return deque.contains(o); |
| 224 | } |
| 225 | |
| 226 | @Override |
| 227 | public int size() { |
| 228 | return deque.size(); |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | public Iterator<E> iterator() { |
| 233 | return Iterators.unmodifiableIterator(deque.iterator()); |
| 234 | } |
| 235 | |
| 236 | @Override |
| 237 | public Iterator<E> descendingIterator() { |
| 238 | return Iterators.unmodifiableIterator(deque.descendingIterator()); |
| 239 | } |
| 240 | |
| 241 | @Override |
| 242 | public int hashCode() { |
| 243 | return deque.hashCode(); |
| 244 | } |
| 245 | |
| 246 | @Override |
| 247 | public Spliterator<E> spliterator() { |
| 248 | return deque.spliterator(); |
| 249 | } |
| 250 | |
| 251 | @Override |
| 252 | public Stream<E> stream() { |
| 253 | return deque.stream(); |
| 254 | } |
| 255 | |
| 256 | @Override |
| 257 | public Stream<E> parallelStream() { |
| 258 | return deque.parallelStream(); |
| 259 | } |
| 260 | |
| 261 | @Override |
| 262 | public String toString() { |
| 263 | return deque.toString(); |
| 264 | } |
| 265 | } |