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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for nested ternary op expressions.
#
# @example
# # bad
# a ? (b ? b1 : b2) : a2
#
# # good
# if a
# b ? b1 : b2
# else
# a2
# end
class NestedTernaryOperator < Cop
MSG = 'Ternary operators must not be nested. Prefer `if` or `else` ' \
'constructs instead.'.freeze
def on_if(node)
return unless node.ternary?
node.each_descendant(:if).select(&:ternary?).each do |nested_ternary|
add_offense(nested_ternary)
end
end
end
end
end
end
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