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/*
* Main.java
*
* Copyright (C) 2008 Ville Voutilainen
* $Id$
*
* 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.*;
public class Main
{
/**
* This example loads a lisp file and gets two function symbols
* from it. The functions return implementations of MyInterface.
* The example gets two separate implementations and invokes
* the functions in the interface for both implementations.
*/
public static void main(String[] argv)
{
try
{
Interpreter interpreter = Interpreter.createInstance();
interpreter.eval("(load \"interface_implementation.lisp\")");
// the function is not in a separate package, thus the
// correct package is CL-USER. Symbol names are
// upper case. Package needs the prefix, because java
// also has a class named Package.
org.armedbear.lisp.Package defaultPackage =
Packages.findPackage("CL-USER");
Symbol interfacesym =
defaultPackage.findAccessibleSymbol("GET-INTERFACE");
Function interfaceFunction =
(Function) interfacesym.getSymbolFunction();
LispObject myinterface = interfaceFunction.execute();
MyInterface x =
(MyInterface) JavaObject.getObject(myinterface);
x.firstFunction();
x.secondFunction();
Symbol interfacesym2 =
defaultPackage.
findAccessibleSymbol("GET-ANOTHER-INTERFACE");
Function interfaceFunction2 =
(Function) interfacesym2.getSymbolFunction();
LispObject myInterface2 = interfaceFunction2.execute();
MyInterface y =
(MyInterface) JavaObject.getObject(myInterface2);
y.firstFunction();
y.secondFunction();
}
catch (Throwable t)
{
System.out.println("exception!");
t.printStackTrace();
}
}
}
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