Method: Peeky::MethodInfo#infer_default_paramaters

Defined in:
lib/peeky/method_info.rb

#infer_default_paramaters ⇒ Object

Infer default paramater values

WARNING: Unit test coverage went from .1 seconds to 30-40 seconds when I first introduced this method.

I now only call TracePoint if I have optional parameters to be inferred.

The tests are now down to 5 seconds, but it highlights the cost of use TracePoint.



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# File 'lib/peeky/method_info.rb', line 90

def infer_default_paramaters
  class_name = @implementation_type == :class_method ? @target_instance.class.name : nil
  minimalist_method = Peeky::Renderer::MethodCallMinimumParamsRender.new(self, class_name: class_name).render

  return if minimalist_method.end_with?('=')
  return unless optional?

  # TODO: maybe I can use this technique instead and just read the source code
  #       file, line = @focal_method.source_location

  tracer.enable do
    # puts grab_source
    # TODO: minimalist method should be able to handle class methods
    @target_instance.instance_eval(minimalist_method)       if @implementation_type == :method
    @target_instance.class.instance_eval(minimalist_method) if @implementation_type == :class_method
  rescue StandardError, LoadError # => e
    # just print the error for now, we are only attempting to capture the
    # first call, any errors inside the call cannot be dealt with and should
    # not be re-raised
    # red full stop
    print "\e[31m.\e[0m"
    # puts minimalist_method
    # puts e.message
  end
end