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Contents
# encoding: utf-8
module RuboCop
module Cop
module Metrics
# This cop checks for methods with too many parameters.
# The maximum number of parameters in configurable.
# On Ruby 2.0+ keyword arguments can optionally
# be excluded from the total count.
class ParameterLists < Cop
include ConfigurableMax
MSG = 'Avoid parameter lists longer than %d parameters.'
def on_args(node)
count = args_count(node)
return unless count > max_params
add_offense(node, :expression, format(MSG, max_params)) do
self.max = count
end
end
private
def args_count(node)
if count_keyword_args?
node.children.size
else
node.children.reject { |a| a.type == :kwoptarg }.size
end
end
def max_params
cop_config['Max']
end
def count_keyword_args?
cop_config['CountKeywordArgs']
end
end
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems