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UPDATE 06052013 - Herwig

Updated the page with input from David Nolen, the description of the prototype is left intact at the end of the page.

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The docstring of specify! should make it clear that it's not intended for data objects outside the ClojureScript compilation process and suggest reify for those cases. - David

I'm not exactly happy with that, but I think its manageable, given that clojurescript has still some way to go towards 1.0 - Herwig

Object methods and IFn

As per the refactoring from CLJS-414, generating (unmangled) Object methods is possible with (the private version of) specify.

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I don't see why you need to generate .apply instead of cljs$lang$applyTo. We do probably need to generate .call, this is mostly needed for compilation mode other than advanced - David

1. pass a function-like object into jquery 2. jquery calls .apply on it. ... We don't need to generate .apply for every specify IFn; a single .apply method that calls .call or .cljs$lang$applyTo can be assigned to all implementors of IFn. Maybe just Function.prototype.apply - Herwig

Method names

Should the method names be written as symbols instead of keywords? extend has keywords, but it's a function.

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Code Block
(specify x IFoo {:m1 existing-fn}) ; existing-fn is lexically bound and could be an arbitrary expression. Remember, I'm referring to existing-fn as method-fn - Herwig

 

UPDATE 06052013-3 - Herwig

Most major decisions seem to be ironed out. I'll start with the ground work for:

  1. Implementing protocol methods with the arity-methods of a regular fn
  2. Emitting arity-dispatch for .call outside of cljs.compiler/emit for use in specify!

There is still time to chime in on the design; it might take a week or two before I can allocate another time block like this to start pushing patches

Proposal Description of prototype implementation as part of refactoring: CLJS-414

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