/*

 * 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 "TwelveMonkeys" 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 OWNER 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.

 * <p/>

 * <em>NOTE: This class is not considered part of the public API and may be

 * changed without notice</em>

 *

 * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>

 * @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;

    }

}