On Mar 21, 6:13 pm, ronen <nark...@gmail.com> wrote:
> Hello there,
> Iv been trying to implement a proxy on a class
> (http://code.google.com/p/javaparser/source/browse/trunk/JavaParser/sr...)
> that has multiple overloaded methods (same arity different types),
> trying
>
> (defn create-visitor []
> (proxy [VoidVisitorAdapter] []
> (visit [method, arg]
> (println method))
> (visit [exp, arg]
> (println type))))
>
> This results with compilation error Caused by:
> java.lang.IllegalArgumentException: Method 'visit' redefined.
>
> Type hints didn't help either:
Proxy doesn't care about argument types. You need one method with a
conditional:
(defn create-visitor []
(proxy [VoidVisitorAdapter] []
(visit [arg1 arg2]
(if (instance? MethodDeclaration arg1)
...))))
You could also define a multimethod and call it from the proxy.
-Stuart Sierra
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