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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Performance
# Identifies places where `sort { |a, b| a <=> b }` can be replaced with `sort`.
#
# @example
# # bad
# array.sort { |a, b| a <=> b }
#
# # good
# array.sort
#
class RedundantSortBlock < Base
include SortBlock
extend AutoCorrector
MSG = 'Use `sort` instead of `%<bad_method>s`.'
def on_block(node)
return unless (send, var_a, var_b, body = sort_with_block?(node))
replaceable_body?(body, var_a, var_b) do
range = sort_range(send, node)
add_offense(range, message: message(var_a, var_b)) do |corrector|
corrector.replace(range, 'sort')
end
end
end
private
def message(var_a, var_b)
bad_method = "sort { |#{var_a}, #{var_b}| #{var_a} <=> #{var_b} }"
format(MSG, bad_method: bad_method)
end
end
end
end
end
Version data entries
9 entries across 9 versions & 3 rubygems