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


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14  * Copyright (C) 2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
15  * Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
16  * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
17  * Copyright (C) 2004-2005 Thomas E Enebo <enebo@acm.org>
18  * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
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32 package org.jruby.internal.runtime.methods;
33
34 import org.jruby.Ruby;
35 import org.jruby.RubyModule;
36 import org.jruby.lexer.yacc.ISourcePosition;
37 import org.jruby.runtime.Arity;
38 import org.jruby.runtime.Block;
39 import org.jruby.runtime.ThreadContext;
40 import org.jruby.runtime.Visibility;
41 import org.jruby.runtime.builtin.IRubyObject;
42 import org.jruby.runtime.callback.Callback;
43
44 /**
45  */
46 public class SimpleCallbackMethod extends DynamicMethod {
47     private Callback callback;
48
49     public SimpleCallbackMethod(RubyModule implementationClass, Callback callback, Visibility visibility) {
50         super(implementationClass, visibility);
51         this.callback = callback;
52     }
53
54     public void preMethod(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
55     }
56     
57     public void postMethod(ThreadContext context) {
58     }
59
60     public IRubyObject internalCall(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
61         assert false;
62         return null;
63     }
64
65     public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule klazz, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
66         assert args != null;
67         Ruby runtime = context.getRuntime();
68         
69         if (runtime.getTraceFunction() != null) {
70             ISourcePosition position = context.getPosition();
71
72             runtime.callTraceFunction(context, "c-call", position, self, name, getImplementationClass());
73             try {
74                 return callback.execute(self, args, Block.NULL_BLOCK);
75             } finally {
76                 runtime.callTraceFunction(context, "c-return", position, self, name, getImplementationClass());
77             }
78         }
79         return callback.execute(self, args, Block.NULL_BLOCK);
80     }
81
82     public Callback getCallback() {
83         return callback;
84     }
85
86     public Arity getArity() {
87         return getCallback().getArity();
88     }
89     
90     public DynamicMethod dup() {
91         return new SimpleCallbackMethod(getImplementationClass(), callback, getVisibility());
92     }
93 }
94
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