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 * and Distribution License("CDDL") (collectively, the "License").  You
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package org.glassfish.pfl.dynamic.copyobject.impl;

import java.util.Map ;

import java.security.Permission ;

import org.glassfish.pfl.dynamic.copyobject.spi.ReflectiveCopyException ;

import sun.corba.Bridge ;
import sun.corba.BridgePermission ;

/** Base class for generated class copiers.  Note that this class
 * makes use of the unsafe copier through the Bridge class.  
 * Because of this, CodegenCopierBase could potentially be used
 * to bypass security restrictions.  Consequently, this class must be 
 * referenced inside a doPrivileged block, and a derived class 
 * must have the permissions needed for the
 * Bridge class.
 */
public abstract class CodegenCopierBase 
    implements ClassCopierOrdinaryImpl.ClassFieldCopier
{
    private static final Bridge bridge = Bridge.get() ;
    private static final Permission getBridgePermission = 
	new BridgePermission( "getBridge" ) ;
    
    private PipelineClassCopierFactory factory ;

    public CodegenCopierBase( PipelineClassCopierFactory factory )
    {
	SecurityManager sman = System.getSecurityManager() ;
	if (sman != null) {
            sman.checkPermission(getBridgePermission);
        }

	this.factory = factory ;
    }

    final protected void copyObject( Map oldToNew,
	long offset, Object src, Object dest ) 
	throws ReflectiveCopyException
    {
	Object obj = bridge.getObject( src, offset ) ;

	Object result = null ;

	if (obj != null) {
	    // This lookup must be based on the actual type, not the
	    // declared type to allow for polymorphism.
	    ClassCopier copier = factory.getClassCopier( obj.getClass()) ;
	    result = copier.copy( oldToNew, obj ) ;
	}

	bridge.putObject( dest, offset, result ) ;
    }

    final protected void copyByte( long offset, Object src, Object dest )
    {
	bridge.putByte( dest, offset, bridge.getByte( src, offset )) ;
    }

    final protected void copyChar( long offset, Object src, Object dest )
    {
	bridge.putChar( dest, offset, bridge.getChar( src, offset )) ;
    }

    final protected void copyShort( long offset, Object src, Object dest )
    {
	bridge.putShort( dest, offset, bridge.getShort( src, offset )) ;
    }

    final protected void copyInt( long offset, Object src, Object dest )
    {
	bridge.putInt( dest, offset, bridge.getInt( src, offset )) ;
    }

    final protected void copyLong( long offset, Object src, Object dest )
    {
	bridge.putLong( dest, offset, bridge.getLong( src, offset )) ;
    }

    final protected void copyFloat( long offset, Object src, Object dest )
    {
	bridge.putFloat( dest, offset, bridge.getFloat( src, offset )) ;
    }

    final protected void copyDouble( long offset, Object src, Object dest )
    {
	bridge.putDouble( dest, offset, bridge.getDouble( src, offset )) ;
    }

    final protected void copyBoolean( long offset, Object src, Object dest )
    {
	bridge.putBoolean( dest, offset, bridge.getBoolean( src, offset )) ;
    }
} ;