/*

 * Copyright 2000-2003 Sun Microsystems, Inc.  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.

 *

 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

package sun.jvm.hotspot.oops;

import java.io.*;

import java.util.*;

import sun.jvm.hotspot.debugger.*;

import sun.jvm.hotspot.runtime.*;

import sun.jvm.hotspot.types.*;

// An Instance is an instance of a Java Class

public class Instance extends Oop {

  static {

    VM.registerVMInitializedObserver(new Observer() {

        public void update(Observable o, Object data) {

          initialize(VM.getVM().getTypeDataBase());

        }

      });

  }

  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {

    Type type = db.lookupType("instanceOopDesc");

  }

  Instance(OopHandle handle, ObjectHeap heap) {

    super(handle, heap);

  }

  public boolean isInstance()          { return true; }

  public void iterateFields(OopVisitor visitor, boolean doVMFields) {

    super.iterateFields(visitor, doVMFields);

    ((InstanceKlass) getKlass()).iterateNonStaticFields(visitor);

  }

  public void printValueOn(PrintStream tty) {

    // Special-case strings.

    // FIXME: would like to do this in more type-safe fashion (need

    // SystemDictionary analogue)

    if (getKlass().getName().asString().equals("java/lang/String")) {

      tty.print("\"" + OopUtilities.stringOopToString(this) + "\"");

    } else {

      super.printValueOn(tty);

    }

  }

}