com.sun.tools.xjc.generator.util.LazyBlockReference Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.tools.xjc.generator.util;
import com.sun.codemodel.JBlock;
/**
* Lazy block reference.
*
* @author
* Kohsuke Kawaguchi ([email protected])
*/
public abstract class LazyBlockReference implements BlockReference {
private JBlock block = null;
/**
* Called when a block needs to be created.
* Only called once in the whole life time of this object.
*/
protected abstract JBlock create();
@Override
public JBlock get(boolean create) {
if(!create) return block;
if(block==null)
block = create();
return block;
}
}