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A general programming library in Java/Android. It's easy to learn and simple to use with concise and powerful APIs.
/*
* Copyright (c) 2020, Haiyang Li.
*
* 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 com.landawn.abacus.util;
import java.util.Deque;
import java.util.Iterator;
import com.landawn.abacus.util.function.Supplier;
public final class LazyDeque extends LazyQueue implements Deque {
private Deque deque;
LazyDeque(final Supplier extends Deque> supplier) {
super(supplier);
}
@Override
protected void init() {
if (isInitialized == false) {
super.init();
deque = (Deque) coll;
}
}
/**
*
* @param
* @param supplier
* @return
*/
public static LazyDeque of(final DequeSupplier supplier) {
return new LazyDeque(supplier);
}
/**
*
* @param
* @param supplier
* @return
* @deprecated throws {@code UnsupportedOperationException}
* @throws UnsupportedOperationException
*/
@Deprecated
public static LazyQueue of(final QueueSupplier supplier) throws UnsupportedOperationException {
throw new UnsupportedOperationException();
}
@Override
public void addFirst(T e) {
if (isInitialized == false) {
init();
}
deque.addFirst(e);
}
@Override
public void addLast(T e) {
if (isInitialized == false) {
init();
}
deque.addLast(e);
}
@Override
public boolean offerFirst(T e) {
if (isInitialized == false) {
init();
}
return deque.offerFirst(e);
}
@Override
public boolean offerLast(T e) {
if (isInitialized == false) {
init();
}
return deque.offerLast(e);
}
@Override
public T removeFirst() {
if (isInitialized == false) {
init();
}
return deque.removeFirst();
}
@Override
public T removeLast() {
if (isInitialized == false) {
init();
}
return deque.removeLast();
}
@Override
public T pollFirst() {
if (isInitialized == false) {
init();
}
return deque.pollFirst();
}
@Override
public T pollLast() {
if (isInitialized == false) {
init();
}
return deque.pollLast();
}
@Override
public T getFirst() {
if (isInitialized == false) {
init();
}
return deque.getFirst();
}
@Override
public T getLast() {
if (isInitialized == false) {
init();
}
return deque.getLast();
}
@Override
public T peekFirst() {
if (isInitialized == false) {
init();
}
return deque.peekFirst();
}
@Override
public T peekLast() {
if (isInitialized == false) {
init();
}
return deque.peekLast();
}
@Override
public boolean removeFirstOccurrence(Object o) {
if (isInitialized == false) {
init();
}
return deque.removeFirstOccurrence(o);
}
@Override
public boolean removeLastOccurrence(Object o) {
if (isInitialized == false) {
init();
}
return deque.removeLastOccurrence(o);
}
@Override
public void push(T e) {
if (isInitialized == false) {
init();
}
deque.push(e);
}
@Override
public T pop() {
if (isInitialized == false) {
init();
}
return deque.pop();
}
@Override
public Iterator descendingIterator() {
if (isInitialized == false) {
init();
}
return deque.descendingIterator();
}
@Override
public int hashCode() {
if (isInitialized == false) {
init();
}
return deque.hashCode();
}
@Override
public boolean equals(Object obj) {
if (isInitialized == false) {
init();
}
return obj instanceof LazyDeque && deque.equals(obj);
}
@Override
public String toString() {
if (isInitialized == false) {
init();
}
return deque.toString();
}
public static interface DequeSupplier extends Supplier> {
@Override
Deque get();
}
}
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