Is it possible to check in macro if being compiled in Clojure or Clojurescript?
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Dominykas Mostauskis
Apr 19, 2015, 11:20:35 AM4/19/15
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Is it possible to check in macro if being compiled in Clojure or Clojurescript?
When I'm writing a library for both Clojure and Clojurescript, I use the same file which I hardlink so that both compilers could access it. Ergo same code, which is very pleasant: until I have to use JVM or JS specific functionality. I'm looking for a painless way to expose different code to different compilers. cljx does the trick, but it's a leiningen plugin and I need a solution that would work on boot-clj.
When I'm writing a library for both Clojure and Clojurescript, I use the same file which I hardlink so that both compilers could access it. Ergo same code, which is very pleasant: until I have to use JVM or JS specific functionality. I'm looking for a painless way to expose different code to different compilers. cljx does the trick, but it's a leiningen plugin and I need a solution that would work on boot-clj.
Alan Dipert
Apr 19, 2015, 6:45:14 PM4/19/15
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Daniel Compton
Apr 19, 2015, 9:35:54 PM4/19/15
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This use case will be provided by Feature Expressions which are planned to come out in Clojure (JVM) 1.7 and presumably will come in a release of ClojureScript around the same time. You can find more details about this planned feature at http://dev.clojure.org/display/design/Feature+Expressions
On Mon, 20 Apr 2015 at 3:20 am Dominykas Mostauskis <dominykas....@gmail.com> wrote:
Is it possible to check in macro if being compiled in Clojure or Clojurescript?
When I'm writing a library for both Clojure and Clojurescript, I use the same file which I hardlink so that both compilers could access it. Ergo same code, which is very pleasant: until I have to use JVM or JS specific functionality. I'm looking for a painless way to expose different code to different compilers. cljx does the trick, but it's a leiningen plugin and I need a solution that would work on boot-clj.
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Dominykas Mostauskis
Apr 20, 2015, 3:56:59 AM4/20/15
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The 1.7.0-beta1 release has Reader Conditionals, and apparently the latest ClojureScript release as well. Wonderful, can't wait to try them out. This is the beta1 release announcement https://groups.google.com/forum/#!topic/clojure/7S127m8bLNQ
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Chas Emerick
Apr 20, 2015, 1:55:53 PM4/20/15
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When you're writing macros that should emit different code depending on
the language target, you can dispatch on the value of &env.
Although, your mention of using cljx makes me think that your scope is
broader than just macros…
- Chas
the language target, you can dispatch on the value of &env.
Although, your mention of using cljx makes me think that your scope is
broader than just macros…
- Chas
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