/*
    * Copyright 2008 Eric Caspole
    * 
    * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
    * file except in compliance with the License. You may obtain a copy of the License at
    * 
    * http://www.apache.org/licenses/LICENSE-2.0
    * 
    * Unless required by applicable law or agreed to in writing, software distributed under
   * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  package net.sf.madmap;
  
  import java.io.*;
  import java.util.*;
  
  /**
   * HprofObject is the representation of a java object in the heap of the hprof
   * target process. It has data members representing the object fields of the
   * target object and retrieves the member field names from the HprofClassElement
   * that corresponds to the java class for the target object.
   * 
   *  @author ecaspole
   *  
   */
  public final class HprofObject extends HprofHeapAllocation {
    
    short[] _member_name_indexes  = null; 
    
    public HprofObject( long addr, String klass, HprofClassElement cls_addr, long size, int trace, ArrayList names, ArrayList objs ) {
      super( addr, trace, cls_addr );
  
      assert (( objs == null ) ? true : (( MadmapMain.getSaveMemberNames() ) ? names.size() == objs.size() : true)): "object members are messed up." ;    
      set_children( longArrayListtoLongArray( objs ) );
    }
  
    public long size() {     
      long objSize = class_addr().instanceSize();
  
      // In binary dumps, Object has 0 size
      //if ( objSize == 0 ) {
      //  System.out.println( "### instanceSize is 0: " + Long.toHexString(addr()) + " " + className());
      //  assert objSize != 0 : "instanceSize is 0";
      //}
      return objSize;
    }
  
    public void set_member_name_indexes( short[] nmIdx) { _member_name_indexes = nmIdx; }
      
    public String toString() {
      StringBuffer  p = new StringBuffer();
      
      p.append( new String("OBJ " + Long.toHexString(addr()) + " (sz= " + size() + ", trace=" + getStackTrace() + 
          ", class=" + className() + "@" + Long.toHexString(class_addr().addr()) + ")"));
  
      try {
      	if (children() != null) {
        if ( MadmapMain.getSaveMemberNames() ) {
          if ( (!(( children().length > 0 ) && ( _member_name_indexes != null ))) &&
                  (!(( children().length == 0 ) && ( _member_name_indexes == null ))) ) {
            System.out.println("members are messed up:" );
            System.out.println( "k.name() = " + class_addr().className() + " -- this classname() = " + className() );
            System.out.println("  _member_refs.length   = " + children().length );
            System.out.println("  _member_name_indexes.length  = " + _member_name_indexes.length );      
          }
        }
      
        for (int i = 0 ; i < children().length; i++ )  {
    		p.append("\n");
          Long id  = (Long) children()[ i ];
          String name = "";
          if ( MadmapMain.getSaveMemberNames() ) {
            name = (String) class_addr().nonstatic_field_names().get( _member_name_indexes[i] );
          }
          p.append( new String("  " + name + "\t" + Long.toHexString( id )));
        }
      	}
      } catch ( Exception e ) {
        System.out.println( "Exception " + e );
        //System.out.println( "    _member_refs.length  : " + children().length );
        //System.out.println( "    _member_name_indexes.length : " + _member_name_indexes.length );
        //System.out.println( "    k : " + class_addr().toString() );
        e.printStackTrace();
        System.exit( -1 );
      }
      
      return p.toString();
    }
  }