com.twelvemonkeys.lang.ReflectUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.lang;
/**
* Util class for various reflection-based operations.
*
* NOTE: This class is not considered part of the public API and may be
* changed without notice
*
*
* @author Harald Kuhr
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/lang/ReflectUtil.java#1 $
*/
public final class ReflectUtil {
/** Don't allow instances */
private ReflectUtil() {}
/**
* Returns the primitive type for the given wrapper type.
*
* @param pType the wrapper type
*
* @return the primitive type
*
* @throws IllegalArgumentException if {@code pType} is not a primitive
* wrapper
*/
public static Class unwrapType(Class pType) {
if (pType == Boolean.class) {
return Boolean.TYPE;
}
else if (pType == Byte.class) {
return Byte.TYPE;
}
else if (pType == Character.class) {
return Character.TYPE;
}
else if (pType == Double.class) {
return Double.TYPE;
}
else if (pType == Float.class) {
return Float.TYPE;
}
else if (pType == Integer.class) {
return Integer.TYPE;
}
else if (pType == Long.class) {
return Long.TYPE;
}
else if (pType == Short.class) {
return Short.TYPE;
}
throw new IllegalArgumentException("Not a primitive wrapper: " + pType);
}
/**
* Returns the wrapper type for the given primitive type.
*
* @param pType the primitive tpye
*
* @return the wrapper type
*
* @throws IllegalArgumentException if {@code pType} is not a primitive
* type
*/
public static Class wrapType(Class pType) {
if (pType == Boolean.TYPE) {
return Boolean.class;
}
else if (pType == Byte.TYPE) {
return Byte.class;
}
else if (pType == Character.TYPE) {
return Character.class;
}
else if (pType == Double.TYPE) {
return Double.class;
}
else if (pType == Float.TYPE) {
return Float.class;
}
else if (pType == Integer.TYPE) {
return Integer.class;
}
else if (pType == Long.TYPE) {
return Long.class;
}
else if (pType == Short.TYPE) {
return Short.class;
}
throw new IllegalArgumentException("Not a primitive type: " + pType);
}
/**
* Returns {@code true} if the given type is a primitive wrapper.
*
* @param pType
*
* @return {@code true} if the given type is a primitive wrapper, otherwise
* {@code false}
*/
public static boolean isPrimitiveWrapper(Class pType) {
return pType == Boolean.class || pType == Byte.class
|| pType == Character.class || pType == Double.class
|| pType == Float.class || pType == Integer.class
|| pType == Long.class || pType == Short.class;
}
}