source: branches/1.1.x/src/org/armedbear/lisp/FuncallableStandardClass.java

/*
 * FuncallableStandardClass.java
 *
 * Copyright (C) 2003-2005 Peter Graves, 2012 Rudolf Schlatte
 * $Id: FuncallableStandardClass.java 13872 2012-02-11 22:35:40Z rschlatte $
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * As a special exception, the copyright holders of this library give you
 * permission to link this library with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on this library.  If you modify this library, you may extend
 * this exception to your version of the library, but you are not
 * obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

package org.armedbear.lisp;

import static org.armedbear.lisp.Lisp.*;

public class FuncallableStandardClass extends StandardClass
{

  public FuncallableStandardClass()
  {
      super(StandardClass.layoutFuncallableStandardClass);
  }

  public FuncallableStandardClass(Symbol symbol, LispObject directSuperclasses)
  {
      super(StandardClass.layoutFuncallableStandardClass,
            symbol, directSuperclasses);
  }

  @Override
  public LispObject typeOf()
  {
    return Symbol.FUNCALLABLE_STANDARD_CLASS;
  }

  @Override
  public LispObject classOf()
  {
    return StandardClass.FUNCALLABLE_STANDARD_CLASS;
  }

  @Override
  public LispObject typep(LispObject type)
  {
    if (type == Symbol.FUNCALLABLE_STANDARD_CLASS)
      return T;
    if (type == StandardClass.FUNCALLABLE_STANDARD_CLASS)
      return T;
    return super.typep(type);
  }

  public LispObject allocateInstance()
  {
    Layout layout = getClassLayout();
    if (layout == null)
      {
        Symbol.ERROR.execute(Symbol.SIMPLE_ERROR,
                             Keyword.FORMAT_CONTROL,
                             new SimpleString("No layout for class ~S."),
                             Keyword.FORMAT_ARGUMENTS,
                             list(this));
      }
    return new FuncallableStandardObject(this, layout.getLength());
  }

  @Override
  public String printObject()
  {
    StringBuilder sb =
      new StringBuilder(Symbol.FUNCALLABLE_STANDARD_CLASS.printObject());
    if (getName() != null)
      {
        sb.append(' ');
        sb.append(getName().printObject());
      }
    return unreadableString(sb.toString());
  }
}