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Contents
# encoding: utf-8
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for uses of methods Hash#has_key? and Hash#has_value?
# Prefer to use Hash#key? and Hash#value? instead
class PreferredHashMethods < Cop
MSG = 'Use `Hash#%s` instead of `Hash#%s`.'.freeze
PREFERRED_METHODS = [:has_key?, :has_value?].freeze
def on_send(node)
_receiver, method_name, *args = *node
return unless args.size == 1 &&
PREFERRED_METHODS.include?(method_name)
add_offense(node, :selector,
format(MSG,
proper_method_name(method_name),
method_name))
end
def autocorrect(node)
lambda do |corrector|
corrector.replace(node.loc.selector,
proper_method_name(node.loc.selector.source))
end
end
private
def proper_method_name(method_name)
method_name.to_s.sub(/has_/, '')
end
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems