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Contents
# frozen_string_literal: true
module Rubocop
module Cop
module Style
# Flags uses of OpenStruct, as it is now officially discouraged
# to be used for performance, version compatibility, and potential security issues.
#
# See also:
# - https://rubyreferences.github.io/rubychanges/3.0.html#standard-library
# - https://docs.ruby-lang.org/en/3.0.0/OpenStruct.html#class-OpenStruct-label-Caveats
# - https://gitlab.com/gitlab-org/gitlab/-/merge_requests/67855
class OpenStructUse < RuboCop::Cop::Base
MSG = 'Avoid using `OpenStruct`. It is officially discouraged. ' \
'Replace it with `Struct`, `Hash`, or RSpec doubles. ' \
'See https://docs.ruby-lang.org/en/3.0.0/OpenStruct.html#class-OpenStruct-label-Caveats'
# @!method uses_open_struct?(node)
def_node_matcher :uses_open_struct?, <<-PATTERN
(const {nil? (cbase)} :OpenStruct)
PATTERN
def on_const(node)
return unless uses_open_struct?(node)
return if custom_class_or_module_definition?(node)
add_offense(node)
end
private
def custom_class_or_module_definition?(node)
parent = node.parent
(parent.class_type? || parent.module_type?) && node.left_siblings.empty?
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems