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keyword arguments incompatibilities #2512

blanquer opened this issue Jan 24, 2015 · 2 comments

keyword arguments incompatibilities #2512

blanquer opened this issue Jan 24, 2015 · 2 comments


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There are a couple of things that I'm seeing that still don't match the MRI behavior on method keyword arguments.

One is the arity, which returns different results ( but I believe that this might already be tracked in #2480 ?)

The other one is the definition of the keyword types "required" vs. not . For example, required arguments are not reported as such in the .parameters call.

Here's a quick snippet that shows both things, and the difference in results:

class Foo
  def self.test( arg1: "default" , arg2: )
    puts "arg1: #{arg1.inspect}"

m = Foo.method(:test)
puts "PARAMS: #{m.parameters.inspect}"
puts "ARITY: #{m.arity}"
bug:~ $ rvm 2.2.0
bug:~ $ ruby /tmp/test.rb
PARAMS: [[:keyreq, :arg2], [:key, :arg1]]
bug:~ $ rvm jruby-head
bug:~ $ ruby /tmp/test.rb
PARAMS: [[:key, :arg1], [:key, :arg2]]
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Who828 commented Jan 24, 2015

Hey, thanks for reporting the bug!
I have fixed parsing bit, so it identifies keyreq correctly but I still need to work on the arity part of the bug.

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enebo commented Apr 17, 2015

Recent commits has solved remaining issue with this snippet (e.g. arity being reported as wrong).

@enebo enebo closed this as completed Apr 17, 2015
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