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Versions: 61
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Stored size: 1.46 KB
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for uses of the class/module name instead of
# self, when defining class/module methods.
#
# @example
# # bad
# class SomeClass
# def SomeClass.class_method
# # ...
# end
# end
#
# # good
# class SomeClass
# def self.class_method
# # ...
# end
# end
class ClassMethods < Cop
MSG = 'Use `self.%<method>s` instead of `%<class>s.%<method>s`.'
def on_class(node)
return unless node.body
if node.body.defs_type?
check_defs(node.identifier, node.body)
elsif node.body.begin_type?
node.body.each_child_node(:defs) do |def_node|
check_defs(node.identifier, def_node)
end
end
end
alias on_module on_class
def autocorrect(node)
->(corrector) { corrector.replace(node.loc.name, 'self') }
end
private
def check_defs(name, node)
# check if the class/module name matches the definee for the defs node
return unless name == node.receiver
add_offense(node.receiver, location: :name)
end
def message(node)
_, class_name = *node
format(MSG, method: node.parent.method_name, class: class_name)
end
end
end
end
end
Version data entries
61 entries across 42 versions & 5 rubygems