Sha256: 71d4fca81a9d9e49d418c713f38b3d14363f2fcc8a7c8c210286b2834aaec0c8
Contents?: true
Size: 1.05 KB
Versions: 13
Compression:
Stored size: 1.05 KB
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, superclass.source_range, MSG)
end
private
def struct_constructor?(node)
return false unless node
send_node = node.block_type? ? node.children.first : node
return false unless send_node.send_type?
receiver, method_name = *send_node
receiver &&
receiver.const_type? &&
receiver.children.last == :Struct &&
method_name == :new
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems