64 lines
1.7 KiB
Ruby
64 lines
1.7 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module RuboCop
|
|
module Cop
|
|
module UsageData
|
|
# This cop checks that metric instrumentation classes subclass one of the allowed base classes.
|
|
#
|
|
# @example
|
|
#
|
|
# # good
|
|
# class CountIssues < DatabaseMetric
|
|
# # ...
|
|
# end
|
|
#
|
|
# # bad
|
|
# class CountIssues < BaseMetric
|
|
# # ...
|
|
# end
|
|
class InstrumentationSuperclass < RuboCop::Cop::Cop
|
|
MSG = "Instrumentation classes should subclass one of the following: %{allowed_classes}."
|
|
|
|
BASE_PATTERN = "(const nil? !#allowed_class?)"
|
|
|
|
def_node_matcher :class_definition, <<~PATTERN
|
|
(class (const _ !#allowed_class?) #{BASE_PATTERN} ...)
|
|
PATTERN
|
|
|
|
def_node_matcher :class_new_definition, <<~PATTERN
|
|
[!^(casgn {nil? cbase} #allowed_class? ...)
|
|
!^^(casgn {nil? cbase} #allowed_class? (block ...))
|
|
(send (const {nil? cbase} :Class) :new #{BASE_PATTERN})]
|
|
PATTERN
|
|
|
|
def on_class(node)
|
|
class_definition(node) do
|
|
register_offense(node.children[1])
|
|
end
|
|
end
|
|
|
|
def on_send(node)
|
|
class_new_definition(node) do
|
|
register_offense(node.children.last)
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def allowed_class?(class_name)
|
|
allowed_classes.include?(class_name)
|
|
end
|
|
|
|
def allowed_classes
|
|
cop_config['AllowedClasses'] || []
|
|
end
|
|
|
|
def register_offense(offense_node)
|
|
message = format(MSG, allowed_classes: allowed_classes.join(', '))
|
|
add_offense(offense_node, message: message)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|