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Feature #14111 » argument_error.rb

esjee (SJ Stoker), 06/25/2018 09:10 PM

 
module PrintPrototype
prepend_features ArgumentError

def to_s
msg = super.dup

parameters = receiver.method(method_name).parameters

human_friendly_parameters = parameters.map do |type, name|
# type is one of
# req
# opt
# rest
# key
# keyreq
# keyrest
# block

human_friendly_type = case type
when :req
"required"
when :opt
"optional"
when :rest
"rest"
when :key
"optional keyword"
when :keyreq
"required keyword"
when :keyrest
"rest keyword"
when :block
"block"
else
type.to_s
end

"\t#{name} (#{human_friendly_type})"
end

if human_friendly_parameters.any?
msg << "\n\nMethod parameters:\n#{human_friendly_parameters.join "\n"}"
end

rescue => _e
puts _e
super
end
end
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