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Java > Open Source Codes > org > jruby > runtime > callback > InvocationCallback


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2006 Ola Bini <ola@ologix.com>
15  *
16  * Alternatively, the contents of this file may be used under the terms of
17  * either of the GNU General Public License Version 2 or later (the "GPL"),
18  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
19  * in which case the provisions of the GPL or the LGPL are applicable instead
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27  ***** END LICENSE BLOCK *****/
28 package org.jruby.runtime.callback;
29
30 import org.jruby.Ruby;
31 import org.jruby.runtime.Arity;
32 import org.jruby.runtime.Block;
33 import org.jruby.runtime.builtin.IRubyObject;
34 import org.jruby.exceptions.RaiseException;
35 import org.jruby.exceptions.JumpException;
36 import org.jruby.exceptions.ThreadKill;
37 import org.jruby.exceptions.MainExitException;
38
39 /**
40  * @author <a HREF="mailto:ola.bini@ki.se">Ola Bini</a>
41  */
42 public abstract class InvocationCallback implements Callback {
43     private Arity arity;
44
45     public IRubyObject execute(IRubyObject recv, IRubyObject[] oargs, Block block) {
46         Ruby runtime = recv.getRuntime();
47         arity.checkArity(runtime, oargs);
48         try {
49             return call(recv,oargs,block);
50         } catch(RaiseException e) {
51             throw e;
52         } catch(JumpException e) {
53             throw e;
54         } catch(ThreadKill e) {
55             throw e;
56         } catch(MainExitException e) {
57             throw e;
58         } catch(Exception JavaDoc e) {
59             runtime.getJavaSupport().handleNativeException(e);
60             return runtime.getNil();
61         }
62     }
63
64     public abstract IRubyObject call(Object JavaDoc receiver, Object JavaDoc[] args, Block block);
65
66     public void setArity(Arity arity) {
67         this.arity = arity;
68     }
69
70     public Arity getArity() {
71         return arity;
72     }
73 }// InvocationCallback
74
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