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Java > Open Source Codes > org > jruby > internal > runtime > methods > SimpleInvocationMethod


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
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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
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13  *
14  * Copyright (C) 2006 Ola Bini <ola@ologix.com>
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17  * either of the GNU General Public License Version 2 or later (the "GPL"),
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28 package org.jruby.internal.runtime.methods;
29
30 import org.jruby.Ruby;
31 import org.jruby.RubyModule;
32 import org.jruby.lexer.yacc.ISourcePosition;
33 import org.jruby.runtime.Arity;
34 import org.jruby.runtime.Block;
35 import org.jruby.runtime.ThreadContext;
36 import org.jruby.runtime.Visibility;
37 import org.jruby.runtime.builtin.IRubyObject;
38 import org.jruby.exceptions.RaiseException;
39 import org.jruby.exceptions.JumpException;
40 import org.jruby.exceptions.ThreadKill;
41 import org.jruby.exceptions.MainExitException;
42
43 /**
44  * @author <a HREF="mailto:ola.bini@ki.se">Ola Bini</a>
45  */
46 public abstract class SimpleInvocationMethod extends DynamicMethod implements Cloneable JavaDoc{
47     private Arity arity;
48     public SimpleInvocationMethod(RubyModule implementationClass, Arity arity, Visibility visibility) {
49         super(implementationClass, visibility);
50         this.arity = arity;
51     }
52
53     public void preMethod(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
54     }
55     
56     public void postMethod(ThreadContext context) {
57     }
58     
59     public IRubyObject internalCall(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
60         assert false;
61         return null;
62     }
63     
64     private IRubyObject wrap(Ruby runtime, IRubyObject self, IRubyObject[] args) {
65         try {
66             return call(self,args);
67         } catch(RaiseException e) {
68             throw e;
69         } catch(JumpException e) {
70             throw e;
71         } catch(ThreadKill e) {
72             throw e;
73         } catch(MainExitException e) {
74             throw e;
75         } catch(Exception JavaDoc e) {
76             runtime.getJavaSupport().handleNativeException(e);
77             return runtime.getNil();
78         }
79     }
80
81     public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule klazz, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
82         Ruby runtime = context.getRuntime();
83         arity.checkArity(runtime, args);
84
85         if(runtime.getTraceFunction() != null) {
86             ISourcePosition position = context.getPosition();
87
88             runtime.callTraceFunction(context, "c-call", position, self, name, getImplementationClass());
89             try {
90                 return wrap(runtime,self,args);
91             } finally {
92                 runtime.callTraceFunction(context, "c-return", position, self, name, getImplementationClass());
93             }
94         }
95         return wrap(runtime,self,args);
96     }
97
98     public abstract IRubyObject call(IRubyObject self, IRubyObject[] args);
99     
100     public DynamicMethod dup() {
101         try {
102             return (SimpleInvocationMethod) clone();
103         } catch (CloneNotSupportedException JavaDoc e) {
104             return null;
105         }
106     }
107
108     public Arity getArity() {
109         return arity;
110     }
111 }
112
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