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


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28 package org.jruby.internal.runtime.methods;
29
30 import org.jruby.RubyModule;
31 import org.jruby.runtime.Arity;
32 import org.jruby.runtime.Block;
33 import org.jruby.runtime.ThreadContext;
34 import org.jruby.runtime.Visibility;
35 import org.jruby.runtime.builtin.IRubyObject;
36
37 /**
38  * MultiStubMethod provides a mapping from an individual Ruby method to one of
39  * the Java methods directly invokable behind a MultiStub. It uses the
40  * given index to switch and choose the correct MultiStub method to invoke.
41  */
42 public class MultiStubMethod extends DynamicMethod implements
43         Cloneable JavaDoc {
44     private Arity arity;
45     private MultiStub stub;
46     private int index;
47     
48     public MultiStubMethod(MultiStub stub, int index, RubyModule implementationClass, Arity arity, Visibility visibility) {
49         super(implementationClass, visibility);
50         this.arity = arity;
51         this.stub = stub;
52         this.index = index;
53         
54         assert arity != null;
55     }
56
57     public void preMethod(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
58         context.preReflectedMethodInternalCall(implementationClass, klazz, self, name, args, noSuper, block);
59     }
60     
61     public void postMethod(ThreadContext context) {
62         context.postReflectedMethodInternalCall();
63     }
64     
65     public IRubyObject internalCall(ThreadContext context, RubyModule klazz, IRubyObject self, String JavaDoc name, IRubyObject[] args, boolean noSuper, Block block) {
66         // FIXME: Uh uh
67 switch (index) {
68         case 0:
69             return stub.method0(context, self, args, block);
70         case 1:
71             return stub.method1(context, self, args, block);
72         case 2:
73             return stub.method2(context, self, args, block);
74         case 3:
75             return stub.method3(context, self, args, block);
76         case 4:
77             return stub.method4(context, self, args, block);
78         case 5:
79             return stub.method5(context, self, args, block);
80         case 6:
81             return stub.method6(context, self, args, block);
82         case 7:
83             return stub.method7(context, self, args, block);
84         case 8:
85             return stub.method8(context, self, args, block);
86         case 9:
87             return stub.method9(context, self, args, block);
88         }
89         
90         assert false;
91         return null;
92     }
93     
94     // TODO: Perhaps abstract method should contain this and all other Methods should pass in decent value
95 public Arity getArity() {
96         return arity;
97     }
98
99     public DynamicMethod dup() {
100         try {
101             return (MultiStubMethod) clone();
102         } catch (CloneNotSupportedException JavaDoc e) {
103             return null;
104         }
105     }
106 }
107
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