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

/*
 * $Id: ClassRef.java,v 1.11 2002/09/16 08:05:03 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;

import anvil.Location;
import anvil.ErrorListener;

/**
 * class ClassRef
 *
 * @author: Jani Lehtimki
 */
public class ClassRef extends Ref
{

  protected ClassType _classtype = null;


  public ClassRef(ReferenceResolver resolver)
  {
    super(resolver);
  }
  

  public Type getType()
  {
    return _classtype;
  }


  public ClassType getClassType()
  {
    return _classtype;
  }
  
  
  public boolean resolve(ErrorListener context)
  {
    Type type = _resolver.resolveReference(context);
    if (type != null) {
      if (type.getType() != Type.CLASS) {
        context.error(_resolver.getLocation(), "Entity '"+toString()+"' is not a class");
      } else {
        if (type instanceof NativeJava) {
          context.error(_resolver.getLocation(), "Entity '"+toString()+"' is class which cannot be extended.");
        }
        _classtype = (ClassType)type;
      }
    } else {
      context.error(_resolver.getLocation(), "Entity '"+toString()+"' is not declared");
    }    
    _resolved = true;
    return (_classtype != null);
  }
  
}