/*

 * Copyright (c) 1996, 1997, 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.

 */

/*

 * COPYRIGHT goes here

 */

package sun.applet;

import java.io.*;

import java.lang.reflect.Array;

/**

 * This subclass of ObjectInputStream delegates loading of classes to

 * an existing ClassLoader.

 */

class AppletObjectInputStream extends ObjectInputStream

{

    private AppletClassLoader loader;

    /**

     * Loader must be non-null;

     */

    public AppletObjectInputStream(InputStream in, AppletClassLoader loader)

            throws IOException, StreamCorruptedException {

        super(in);

        if (loader == null) {

            throw new AppletIllegalArgumentException("appletillegalargumentexception.objectinputstream");

        }

        this.loader = loader;

    }

    /**

     * Make a primitive array class

     */

    private Class primitiveType(char type) {

        switch (type) {

        case 'B': return byte.class;

        case 'C': return char.class;

        case 'D': return double.class;

        case 'F': return float.class;

        case 'I': return int.class;

        case 'J': return long.class;

        case 'S': return short.class;

        case 'Z': return boolean.class;

        default: return null;

        }

    }

    /**

     * Use the given ClassLoader rather than using the system class

     */

    protected Class resolveClass(ObjectStreamClass classDesc)

        throws IOException, ClassNotFoundException {

        String cname = classDesc.getName();

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

            // An array

            Class component;            // component class

            int dcount;                 // dimension

            for (dcount=1; cname.charAt(dcount)=='['; dcount++) ;

            if (cname.charAt(dcount) == 'L') {

                component = loader.loadClass(cname.substring(dcount+1,

                                                             cname.length()-1));

            } else {

                if (cname.length() != dcount+1) {

                    throw new ClassNotFoundException(cname);// malformed

                }

                component = primitiveType(cname.charAt(dcount));

            }

            int dim[] = new int[dcount];

            for (int i=0; i<dcount; i++) {

                dim[i]=0;

            }

            return Array.newInstance(component, dim).getClass();

        } else {

            return loader.loadClass(cname);

        }

    }

}