/*

 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.management.loading;

// java import

import java.io.*;

import java.lang.reflect.Array;

/**

 * This subclass of ObjectInputStream delegates loading of classes to

 * an existing MLetClassLoader.

 *

 * @since 1.5

 */

class MLetObjectInputStream extends ObjectInputStream {

    private MLet loader;

    /**

     * Loader must be non-null;

     */

    public MLetObjectInputStream(InputStream in, MLet loader)

        throws IOException, StreamCorruptedException {

        super(in);

        if (loader == null) {

            throw new IllegalArgumentException("Illegal null argument to MLetObjectInputStream");

        }

        this.loader = loader;

    }

    private Class<?> primitiveType(char c) {

        switch(c) {

        case 'B':

            return Byte.TYPE;

        case 'C':

            return Character.TYPE;

        case 'D':

            return Double.TYPE;

        case 'F':

            return Float.TYPE;

        case 'I':

            return Integer.TYPE;

        case 'J':

            return Long.TYPE;

        case 'S':

            return Short.TYPE;

        case 'Z':

            return Boolean.TYPE;

        }

        return null;

    }

    /**

     * Use the given ClassLoader rather than using the system class

     */

    @Override

    protected Class<?> resolveClass(ObjectStreamClass objectstreamclass)

        throws IOException, ClassNotFoundException {

        String s = objectstreamclass.getName();

        if (s.startsWith("[")) {

            int i;

            for (i = 1; s.charAt(i) == '['; i++);

            Class<?> class1;

            if (s.charAt(i) == 'L') {

                class1 = loader.loadClass(s.substring(i + 1, s.length() - 1));

            } else {

                if (s.length() != i + 1)

                    throw new ClassNotFoundException(s);

                class1 = primitiveType(s.charAt(i));

            }

            int ai[] = new int[i];

            for (int j = 0; j < i; j++)

                ai[j] = 0;

            return Array.newInstance(class1, ai).getClass();

        } else {

            return loader.loadClass(s);

        }

    }

    /**

     * Returns the ClassLoader being used

     */

    public ClassLoader getClassLoader() {

        return loader;

    }

}