Sha256: 4510703be96020786f5474f57282032a78f5226319e0564c92393f16d952fbe6
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Size: 859 Bytes
Versions: 6831
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Stored size: 859 Bytes
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for inheritance from Struct.new.
#
# @example
# # bad
# class Person < Struct.new(:first_name, :last_name)
# end
#
# # good
# Person = Struct.new(:first_name, :last_name)
class StructInheritance < Cop
MSG = "Don't extend an instance initialized by `Struct.new`.".freeze
def on_class(node)
_name, superclass, _body = *node
return unless struct_constructor?(superclass)
add_offense(node, location: superclass.source_range)
end
def_node_matcher :struct_constructor?, <<-PATTERN
{(send (const nil? :Struct) :new ...)
(block (send (const nil? :Struct) :new ...) ...)}
PATTERN
end
end
end
end
Version data entries
6,831 entries across 6,825 versions & 26 rubygems