/*
* 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.smodel.behaviour;
import org.jetbrains.annotations.Nullable;
import java.util.HashMap;
import java.util.Map;
/**
* Default value mapper for java return type
*
* Created by apyshkin on 7/15/15.
*/
public final class DefaultValuesHolder {
private static final Map<Class, Object> DEFAULT_VALUE = new HashMap<Class, Object>();
static {
DEFAULT_VALUE.put(Character.class, (char) 0);
DEFAULT_VALUE.put(char.class, (char) 0);
DEFAULT_VALUE.put(Byte.class, (byte) 0);
DEFAULT_VALUE.put(byte.class, (byte) 0);
DEFAULT_VALUE.put(Short.class, (short) 0);
DEFAULT_VALUE.put(short.class, (short) 0);
DEFAULT_VALUE.put(Integer.class, 0);
DEFAULT_VALUE.put(int.class, 0);
DEFAULT_VALUE.put(Long.class, (long) 0);
DEFAULT_VALUE.put(long.class, (long) 0);
DEFAULT_VALUE.put(Float.class, (float) 0);
DEFAULT_VALUE.put(float.class, (float) 0);
DEFAULT_VALUE.put(Double.class, (double) 0);
DEFAULT_VALUE.put(double.class, (double) 0);
DEFAULT_VALUE.put(Boolean.class, false);
DEFAULT_VALUE.put(boolean.class, false);
DEFAULT_VALUE.put(Void.class, null);
DEFAULT_VALUE.put(void.class, null);
}
@Nullable
public static <T> T defaultValue(Class<T> returnValueClass) {
if (DEFAULT_VALUE.containsKey(returnValueClass)) {
return (T) DEFAULT_VALUE.get(returnValueClass);
} else {
return null;
}
}
}