source: branches/streams/abcl/examples/java-to-lisp-1/MainAlternative.java

/*
 * MainAlternative.java
 *
 * Copyright (C) 2008 Ville Voutilainen
 * $Id: MainAlternative.java 14570 2013-07-22 13:21:06Z mevenson $
 *
 * 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.
 */

import org.armedbear.lisp.Function;
import org.armedbear.lisp.Interpreter;
import org.armedbear.lisp.Package;
import org.armedbear.lisp.Packages;
import org.armedbear.lisp.Symbol;

public class MainAlternative
{
    /**
     * This example creates an Interpreter instance, loads our
     * lisp code from a file and then looks up a function defined
     * in the loaded lisp file and executes the function.
     */
    public static void main(String[] argv)
    {
  try
      {
    Interpreter interpreter = Interpreter.createInstance();
    interpreter.eval("(load \"lispfunction.lisp\")");
    // the function is not in a separate package, thus the
    // correct package is CL-USER. Symbol names are
    // (usually) upper case. 
    Package defaultPackage 
                  = Packages.findPackage("CL-USER");
    Symbol sym 
                  = defaultPackage.findAccessibleSymbol("LISPFUNCTION");
    Function function = (Function) sym.getSymbolFunction();
    function.execute();
      }
  catch (Throwable t)
      {
    System.out.println("exception!");
    t.printStackTrace();
      }
    }
}