/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package com.sun.tools.internal.xjc.generator.util;
import com.sun.codemodel.internal.JBlock;
/**
* Lazy block reference.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
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();
public JBlock get(boolean create) {
if(!create) return block;
if(block==null)
block = create();
return block;
}
}