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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# This cop checks for using Fixnum or Bignum constant.
#
# @example
#
# # bad
#
# 1.is_a?(Fixnum)
# 1.is_a?(Bignum)
#
# @example
#
# # good
#
# 1.is_a?(Integer)
class UnifiedInteger < Cop
MSG = 'Use `Integer` instead of `%<klass>s`.'.freeze
def_node_matcher :fixnum_or_bignum_const, <<-PATTERN
(:const {nil? (:cbase)} ${:Fixnum :Bignum})
PATTERN
def on_const(node)
klass = fixnum_or_bignum_const(node)
return unless klass
add_offense(node, message: format(MSG, klass: klass))
end
def autocorrect(node)
lambda do |corrector|
corrector.replace(node.loc.name, 'Integer')
end
end
end
end
end
end
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