I figure since new is expecting a class at compiletime, we can never pass
it a class that we evaluate at runtime(those locals), ergo => impossible to
macro around "new" like that
like this => impossible:
*(let [a java.lang.RuntimeException]
(macro-that-eventually-calls-new a))*
maybe someone could suggest another way? clojure.reflect ?
On Thu, Feb 14, 2013 at 10:40 PM, AtKaaZ <atk...@gmail.com> wrote:
> thanks for the reply,
>
> => *(defmacro mew [cls & args]
> `(new ~cls ~@args))*
> #'runtime.q/mew
> =>* (let [a java.lang.RuntimeException]
> (mew a)
> )*
>
> CompilerException java.lang.IllegalArgumentException: Unable to resolve
> classname: a, compiling:(NO_SOURCE_PATH:2:3)
>
> that would be the equivalent macro of what *new* is doing
> it's like
> *(new a)*
> CompilerException java.lang.IllegalArgumentException: Unable to resolve
> classname: a, compiling:(NO_SOURCE_PATH:2:3)
>
>
> This is the goal:
>
> The goal is to can write this form:
> => *(let [a java.lang.RuntimeException]
> (new a))*
>
> but I think it's impossible, at least by using "new" it is
>
>
> On Thu, Feb 14, 2013 at 10:34 PM, Andy Fingerhut <andy.finger...@gmail.com
> > wrote:
>
>>
>> On Feb 14, 2013, at 1:27 PM, AtKaaZ wrote:
>>
>> The goal is to can write this form:
>> => *(let [a java.lang.RuntimeException]
>> (new a)
>> )*
>> CompilerException java.lang.IllegalArgumentException: Unable to resolve
>> classname: a, compiling:(NO_SOURCE_PATH:2:3)
>>
>> attempt with macro:
>> =>* (defmacro mew [cls & restt]
>> `(new ~(eval cls) ~@restt)
>> )*
>> #'runtime.q/mew
>>
>>
>> This is probably your closest attempt. Try this variation on the above:
>>
>> (defmacro mew [cls & args]
>> `(new ~cls ~@args))
>>
>> user=> (macroexpand-1 '(mew java.lang.RuntimeException))
>> (new java.lang.RuntimeException)
>>
>> Andy
>>
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>
>
>
> --
> Please correct me if I'm wrong or incomplete,
> even if you think I'll subconsciously hate it.
>
>
--
Please correct me if I'm wrong or incomplete,
even if you think I'll subconsciously hate it.
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