Ah this is just what I was looking for. I will need to rearrange some of
the namespaces but this looks like a perfect way of implementing it. Thanks
Thomas!
Crispin
On Tuesday, July 18, 2017 at 3:19:38 PM UTC+8, Thomas Heller wrote:
>
> You can easily achieve this by creating a CLJS namespace that
> self-requires the macros. Having dedicated .macros namespaces is generally
> not recommended.
>
> pixi/something.cljs
> (ns pixi.something
> (:require-macros [pixi.something]))
>
> pixi/something.clj
> (ns pixi.something)
>
> (defmacro foo [..] ..)
>
>
> user/code.cljs
> (ns user.code
> (:require [pixi.something :refer (foo)))
>
> (foo)
>
> The user code does not need to worry about whether foo is a macro or not,
> it is handled transparently by the compiler. You never need to
> :refer-macros or :require-macros in the user code this way. And you can
> manage dependent CLJS namespaces that only the macro uses by requiring them
> in the .cljs companion file.
>
> HTH,
> /thomas
>
> On Monday, July 17, 2017 at 4:54:38 PM UTC+2, cri...@procrustes.net wrote:
>>
>> Hi there,
>>
>> I have a macro for use in cljs that injects code to make a function call
>> to a function in a cljs namespace. Now when I use that macro I have to
>> :require the corresponding cljs namespace or during compilation I am
>> flooded with superfluous: "WARNING: Use of undeclared Var
>> mycljsnamespace/func at line " messages.
>>
>> Is there a way to make the use of the macro in a cljs namespace add the
>> cljs require statement to ensure that these warnings are suppressed?
>>
>> The function call in the macro is here:
>> https://github.com/infinitelives/infinitelives.pixi/blob/master/src/clj/infinitelives/pixi/macros.clj#L36
>>
>> and when using it, the compilation looks like:
>>
>> WARNING: Use of undeclared Var
>> infinitelives.pixi.canvas/get-default-canvas at line 15 src/cljs/...
>> WARNING: Use of undeclared Var
>> infinitelives.pixi.canvas/get-default-canvas at line 15 src/cljs/...
>> WARNING: Use of undeclared Var
>> infinitelives.pixi.canvas/get-default-canvas at line 11 src/cljs/...
>> ...
>>
>> at this stage in my present project its at least 50 lines of these.
>>
>> if I require that name space in the client code that warning disappears
>> but that requires the user of the macro to know that in advance, and be
>> disciplined enough to do it.
>>
>> How do I *auto require* the namespace, when the macro is used?
>>
>> I found this thread from 2013:
>> https://groups.google.com/forum/#!searchin/clojurescript/require$20in$20macro%7Csort:relevance/clojurescript/FNwwN87B2EE/lLF-Tel977AJ
>>
>> In it, Jozef Wagner states: "AFAIK there is no way to do this
>> automatically"
>>
>> Is this still the case?
>>
>> I see CLJS has supported since 1.9.293 : CLJS-1346: Support require
>> outside of ns
>>
>> Can I make the macro inject the require into its output code so the
>> "WARNING: Use of undeclared Var" is not emmitted?
>>
>> I have experimented with this but have been unable to make it work.
>>
>> Is this possible to do? If so, how can this be done?
>>
>> Regards
>>
>> Crispin
>>
>
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