/*********************************************

	Copyright © 2001 Jason Lamport.
	All rights reserved.

----------------------
*******************************************/

package com.strangelight.mactoolbox;

import com.apple.jdirect.*;
import com.apple.mrj.jdirect.*;

/**
 *	Implements JDirect's PointerStruct, using Mac toolbox calls to handle
 *	getSize() (Note that J_PointerStruct caches the return value of the 
 *	toolbox call.  If some other object resizes the Ptr, getSize()
 *	will subsequently return an incorrect value.)
 *	
 */
public class J_PointerStruct extends PointerStruct {

	public J_PointerStruct(int new_ptr) {
		super( new_ptr );
		ptr_size = -1;
	}

	public int getSize() {
		if ( 
			( ptr_size == -1 )
			&& ( pointer != 0 )
		) {
			ptr_size = MemoryFunctions.GetPtrSize( pointer );
		}
		return ptr_size;
	}
	
	protected int ptr_size;
	
}