Package anvil.script.expression

Source Code of anvil.script.expression.TypeOfNode

/*
* $Id: TypeOfNode.java,v 1.6 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.codec.Code;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import java.io.IOException;

/**
* class IsNode
*
* @author: Jani Lehtim�ki
*/
public class TypeOfNode extends UnaryParent
{

  public TypeOfNode(Node child)
  {
    super(child);
  }


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

  public Any eval()
  {
    return Any.create(_child.eval().classNameOf());
  }


  public void compile(ByteCompiler context, int operation)
  {
    _child.compile(context, CHECK);
    Code code = context.getCode();
    code.invokevirtual(code.getPool().addMethodRef(context.TYPE_ANY,
      "classNameOf", "()Ljava/lang/String;"));
    code.invokestatic(code.getPool().addMethodRef(context.TYPE_ANY,
      "create", "(Ljava/lang/String;)Lanvil/core/Any;"));
    if (operation == GET_BOOLEAN) {
      context.any2boolean();
    }
  }

}
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