Module: CheckPlease::Reification::ClassMethods

Defined in:
lib/check_please/reification.rb

Instance Method Summary collapse

Instance Method Details

#can_reify(*klasses) ⇒ Object 



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# File 'lib/check_please/reification.rb', line 14

def can_reify(*klasses)
  klasses.flatten!

  unless ( klasses - [nil] ).all? { |e| e.is_a?(Class) }
    raise ArgumentError, "classes (or nil) only, please"
  end

  reifiable.concat klasses
  reifiable.uniq!
  nil
end

#reifiable ⇒ Object 



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# File 'lib/check_please/reification.rb', line 10

def reifiable
  @_reifiable ||= []
end

#reify(primitive_or_object) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/check_please/reification.rb', line 26

def reify(primitive_or_object)
  case primitive_or_object
  when self       ; return primitive_or_object
  when Array      ; return primitive_or_object.map { |e| reify(e) }
  when *reifiable ; return new(primitive_or_object)
  end
  # note early return ^^^

  # that didn't work? complain!
  acceptable = reifiable.map { |e| Class === e ? e.name : e.inspect }
  raise ArgumentError, <<~EOF
    #{self}.reify was given: #{primitive_or_object.inspect}
    but only accepts: #{acceptable.join(", ")}
  EOF
end