package org.webslinger.ext.bsf.jruby;

 import java.util.Arrays;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Vector;

 import org.apache.bsf.BSFException;

 import org.apache.bsf.BSFManager;

 import org.jruby.IRuby;

 import org.jruby.Ruby;

 import org.jruby.RubyException;

 import org.jruby.RubyProc;

 import org.jruby.runtime.builtin.IRubyObject;

 import org.jruby.exceptions.RaiseException;

 import org.webslinger.bsf.CompilingLanguageEngineImpl;

 import org.webslinger.bsf.LanguageEngineInfo;

 public class JRubyEngine extends CompilingLanguageEngineImpl<Object, Object> {

     protected final IRuby ruby = Ruby.getDefaultInstance();

     public JRubyEngine() {

         compiler = new JRubyCompiler(this);

     }

     public LanguageEngineInfo getLanguageEngineInfo() {

         return JRubyInfo.INSTANCE;

     }

     public void initialize(BSFManager manager, String lang, Vector declaredBeans) throws BSFException {

         super.initialize(manager, lang, declaredBeans);

         ruby.getLoadService().init(new ArrayList());

         //Arrays.asList(manager.getClassPath().split(System.getProperty("path.separator"))));

         ruby.getLoadService().require("java");

     }

     public IRuby getRuby() {

         return ruby;

     }

     public Object apply(Object body, Object compiled, Object[] args) throws Exception {

         try {

             try {

                 return ((RubyProc) compiled).call((IRubyObject[]) args);

             } catch (RaiseException e) {

                 e.getException().printBacktrace(System.err);

                 throw e;

             }

         } catch (RuntimeException e) {

             e.printStackTrace();

             throw e;

         } catch (Exception e) {

             e.printStackTrace();

             throw e;

         } catch (Error e) {

             e.printStackTrace();

             throw e;

         }

     }

     public Object eval(Object body, Object compiled) throws Exception {

         return ((IRubyObject) compiled).callMethod("method");

     }

     public void exec(Object body, Object compiled) throws Exception {

         ((IRubyObject) compiled).callMethod("method");

     }

 }