com.sun.xml.rpc.util.LongStack Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.xml.rpc.util;
/**
* @author JAX-RPC Development Team
*/
public final class LongStack {
private long[] values = null;
private int topOfStack = 0;
public LongStack() {
this(32);
}
public LongStack(int size) {
values = new long[size];
}
public void push(long newValue) {
resize();
values[topOfStack] = newValue;
++topOfStack;
}
public long pop() {
--topOfStack;
return values[topOfStack];
}
public long peek() {
return values[topOfStack - 1];
}
private void resize() {
if (topOfStack >= values.length) {
long[] newValues = new long[values.length * 2];
System.arraycopy(values, 0, newValues, 0, values.length);
values = newValues;
}
}
}