ThisNode.java :  » Web-Framework » anvil » anvil » script » expression » Java Open Source

/*
 * $Id: ThisNode.java,v 1.12 2002/09/16 08:05:05 jkl Exp $
 *
 * Copyright (c) 2002 Njet Communications Ltd. All Rights Reserved.
 *
 * Use is subject to license terms, as defined in
 * Anvil Sofware License, Version 1.1. See LICENSE 
 * file, or http://njet.org/license-1.1.txt
 */
package anvil.script.expression;

import anvil.core.Any;
import anvil.core.AnyClass;
import anvil.codec.Code;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import anvil.script.ClassType;
import java.io.IOException;

/**
 * class ThisNode
 *
 * @author: Jani Lehtimki
 */
public class ThisNode extends Node 
{

  public static final ThisNode INSTANCE = new ThisNode(null, null);

  protected ClassType _context;
  protected ClassType _class; 


  public ThisNode(ClassType context, ClassType classtype) 
  {
    super();
    _context = context;
    _class = classtype;
  }


  public int typeOf() 
  {
    return Node.EXPR_THIS;
  }

  
  public boolean isConstant() 
  {
    return false;
  }

  
  public Node optimize() 
  {
    return this;
  }  
  

  public void compile(ByteCompiler context, int operation)
  {
    context.accessInstance(_context, _class);
    //context.getCode().self();
    if (operation == GET_BOOLEAN) {
      context.any2boolean();
    }
  }

}