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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Metrics
# This cop checks that the cyclomatic complexity of methods is not higher
# than the configured maximum. The cyclomatic complexity is the number of
# linearly independent paths through a method. The algorithm counts
# decision points and adds one.
#
# An if statement (or unless or ?:) increases the complexity by one. An
# else branch does not, since it doesn't add a decision point. The &&
# operator (or keyword and) can be converted to a nested if statement,
# and ||/or is shorthand for a sequence of ifs, so they also add one.
# Loops can be said to have an exit condition, so they add one.
class CyclomaticComplexity < Cop
include MethodComplexity
MSG = 'Cyclomatic complexity for %<method>s is too high. ' \
'[%<complexity>d/%<max>d]'.freeze
COUNTED_NODES = %i[if while until for
rescue when and or].freeze
private
def complexity_score_for(_node)
1
end
end
end
end
end
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6,791 entries across 6,785 versions & 25 rubygems