/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* 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 jetbrains.mps.util;
/**
* Serves to be used e.g. in the anonymous classes instead of one-sized arrays
*/
public final class Reference<T> {
private T myValue;
public Reference() {
myValue = null;
}
public Reference(T value) {
myValue = value;
}
public void set(T value) {
myValue = value;
}
public T get() {
return myValue;
}
public boolean isNull() {
return myValue == null;
}
}