Thanks all for the pointers, this looks like a workable approach. In my
case I'm not bothered by the performance hit from reflection (CPS
transformation creates an obscene number of anonymous functions anyway).
However I am running into an issue. Here's my dot function:
(def not-seq? (comp not seq?))
(defn dot [obj member-expr]
(let [member (str (first member-expr))
arg-or-args (rest member-expr)
args (if (not-seq? arg-or-args)
[arg-or-args]
arg-or-args)]
(Reflector/invokeInstanceMethod obj
member
(to-array args))))
This works fine for:
(dot "Hello" (list 'substring 1 2))
But throws an exception for this:
(let [myref (ref {})]
(dot
clojure.lang.LockingTransaction
(list 'runInTransaction (fn [] (commute myref assoc :mykey :myval)))))
I'm getting a instance method not found exception which seems odd. I looked
at LockingTransaction.java and I see that runInTransaction does in fact take
Callable, and fn's are Callable. Any thoughts?
I knew I would have to really learn Java at some point ;)
On Sun, Mar 22, 2009 at 12:06 PM, Stuart Sierra <[email protected]
> wrote:
>
> On Mar 21, 10:23 pm, Timothy Pratley <[email protected]> wrote:
> > You may be able to achieve what you want by directly accessing
> > Clojure's reflector class instead of using the special form:
>
> You could also call Java's reflection API directly.
>
> -Stuart Sierra
> >
>
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