Hi Nikita,
It is a known issue with a fix. I'd recommend trying the second patch in
http://dev.clojure.org/jira/browse/CLJS-1521 and, if it works for you, please
add a comment to the ticket to that effect.
Also, as an aside, the way the my.foo ns form is structured, it will require
the existence of a my.bar runtime namespace (a my/bar.cljs file). This is
because of the way :include-macros desugars—do (doc ns) to see this.
Alternately, you could write the my.foo ns form this way and avoid the need for
a my/bar.cljs file:
(ns my.foo
(:require-macros [my.bar :as b]))
- Mike
On Saturday, February 20, 2016 at 4:53:18 AM UTC-5, Nikita Beloglazov wrote:
> Hello
>
>
> I have some problems understanding how macros are handled in self-hosted js.
> Let's say I have 2 namespace: my.bar and my.foo.
>
>
> my.bar:
>
> (ns my.bar)
>
> (defmacro abs [x]
> `(if (pos? ~x) ~x (- ~x)))
>
>
> my.foo:
>
> (ns my.foo
> (:require [my.bar :as b :include-macros true]))
> (+ (my.bar/abs -4)
> (my.bar/abs 5))
>
>
> This works fine. my.bar/abs is recognized as macro and expanded correctly:
>
> {:value goog.provide('my.foo');
> goog.require('cljs.core');
> goog.require('my.bar');
> (((((-4) > (0)))?(-4):(- (-4))) + ((((5) > (0)))?(5):(- (5))));
> }
>
>
> But If I try to use (+ (b/abs -4) (b/abs 5)) then compiler treats it as
> regular function:
>
>
>
> WARNING: Wrong number of args (1) passed to my.bar/abs at line 3
> WARNING: Wrong number of args (1) passed to my.bar/abs at line 4
> {:value goog.provide('my.foo');
> goog.require('cljs.core');
> goog.require('my.bar');
> (my.bar.abs.call(null,(-4)) + my.bar.abs.call(null,(5)));
> }
>
>
> I'd expect b/abs to be resolved as macro. Am I doing something wrong or it is
> known limitation/bug in currenct self-hosted js?
>
>
> Full example for node js:
> https://gist.github.com/nbeloglazov/38c1fc9a1da2eeca5b33
>
>
> Thanks,
> Nikita
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