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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Metrics
# This cop checks that the ABC size of methods is not higher than the
# configured maximum. The ABC size is based on assignments, branches
# (method calls), and conditions. See http://c2.com/cgi/wiki?AbcMetric
class AbcSize < Cop
include MethodComplexity
MSG = 'Assignment Branch Condition size for %<method>s is too high. ' \
'[%<complexity>.4g/%<max>.4g]'.freeze
BRANCH_NODES = %i[send csend].freeze
CONDITION_NODES = CyclomaticComplexity::COUNTED_NODES.freeze
private
def complexity(node)
assignment = 0
branch = 0
condition = 0
node.each_node do |child|
if child.assignment?
assignment += 1
elsif BRANCH_NODES.include?(child.type)
branch += 1
elsif CONDITION_NODES.include?(child.type)
condition += 1
end
end
Math.sqrt(assignment**2 + branch**2 + condition**2).round(2)
end
end
end
end
end
Version data entries
16 entries across 16 versions & 2 rubygems