/*

 * Copyright (c) 2011, 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.

 *

 *

 */

package sun.jvm.hotspot.opto;

import java.util.*;

import java.io.PrintStream;

import sun.jvm.hotspot.ci.*;

import sun.jvm.hotspot.debugger.*;

import sun.jvm.hotspot.runtime.*;

import sun.jvm.hotspot.oops.*;

import sun.jvm.hotspot.utilities.GrowableArray;

import sun.jvm.hotspot.types.*;

public class InlineTree extends VMObject {

  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("InlineTree");

    callerJvmsField = type.getAddressField("_caller_jvms");

    methodField = type.getAddressField("_method");

    callerTreeField = type.getAddressField("_caller_tree");

    subtreesField = type.getAddressField("_subtrees");

  }

  private static AddressField callerJvmsField;

  private static AddressField methodField;

  private static AddressField callerTreeField;

  private static AddressField subtreesField;

  private static StaticBaseConstructor inlineTreeConstructor = new StaticBaseConstructor<InlineTree>(InlineTree.class);

  public InlineTree(Address addr) {

    super(addr);

  }

  public InlineTree callerTree() {

    Address addr = callerTreeField.getValue(getAddress());

    if (addr == null) return null;

    return new InlineTree(addr);

  }

  public ciMethod method() {

    return (ciMethod) ciObjectFactory.getMetadata(methodField.getValue(getAddress()));

  }

  public JVMState callerJvms() {

    return JVMState.create(callerJvmsField.getValue(getAddress()));

  }

  public int callerBci() {

    JVMState jvms = callerJvms();

    return (jvms != null) ? jvms.bci() : -1;

  }

  public GrowableArray<InlineTree> subtrees() {

    Address addr = getAddress().addOffsetTo(subtreesField.getOffset());

    return GrowableArray.create(addr, inlineTreeConstructor);

  }

  public void printImpl(PrintStream st, int indent) {

    for (int i = 0; i < indent; i++) st.print(" ");

    st.printf(" @ %d ", callerBci());

    method().printShortName(st);

    st.println();

    GrowableArray<InlineTree> subt = subtrees();

    for (int i = 0 ; i < subt.length(); i++) {

      subt.at(i).printImpl(st, indent + 2);

    }

  }

  public void print(PrintStream st) {

    printImpl(st, 2);

  }

}