/*

 * Copyright (c) 2012, 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.

 *

 * 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 sun.jvm.hotspot.oops;

import java.io.*;

import java.util.*;

import sun.jvm.hotspot.utilities.*;

import sun.jvm.hotspot.debugger.*;

import sun.jvm.hotspot.runtime.*;

import sun.jvm.hotspot.types.*;

abstract public class Metadata extends VMObject {

  static {

    VM.registerVMInitializedObserver(new Observer() {

        public void update(Observable o, Object data) {

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

        }

      });

  }

  public Metadata(Address addr) {

    super(addr);

  }

  private static VirtualBaseConstructor<Metadata> metadataConstructor;

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

    metadataConstructor = new VirtualBaseConstructor<Metadata>(db, db.lookupType("Metadata"), null, null);

    // Define an explicit mapping since the C++ and Java type names don't match.

    metadataConstructor.addMapping("Metadata", Metadata.class);

    metadataConstructor.addMapping("Klass", Klass.class);

    metadataConstructor.addMapping("InstanceKlass", InstanceKlass.class);

    metadataConstructor.addMapping("typeArrayKlass", TypeArrayKlass.class);

    metadataConstructor.addMapping("objArrayKlass", ObjArrayKlass.class);

    metadataConstructor.addMapping("Method", Method.class);

    metadataConstructor.addMapping("MethodData", MethodData.class);

    metadataConstructor.addMapping("ConstMethod", ConstMethod.class);

    metadataConstructor.addMapping("ConstantPool", ConstantPool.class);

    metadataConstructor.addMapping("ConstantPoolCache", ConstantPoolCache.class);

  }

  public static Metadata instantiateWrapperFor(Address addr) {

    return metadataConstructor.instantiateWrapperFor(addr);

  }

  public void iterate(MetadataVisitor visitor) {

    visitor.setObj(this);

    visitor.prologue();

    iterateFields(visitor);

    visitor.epilogue();

  }

  void iterateFields(MetadataVisitor visitor) {

  }

  abstract public void printValueOn(PrintStream tty);

}