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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# Checks for the use of a return with a value in a context
# where the value will be ignored. (initialize and setter methods)
#
# @example
#
# # bad
# def initialize
# foo
# return :qux if bar?
# baz
# end
#
# def foo=(bar)
# return 42
# end
#
# @example
#
# # good
# def initialize
# foo
# return if bar?
# baz
# end
#
# def foo=(bar)
# return
# end
class ReturnInVoidContext < Base
MSG = 'Do not return a value in `%<method>s`.'
def on_return(return_node)
return unless return_node.descendants.any?
context_node = non_void_context(return_node)
return unless context_node&.def_type?
return unless context_node&.void_context?
add_offense(
return_node.loc.keyword,
message: format(message, method: context_node.method_name)
)
end
private
def non_void_context(return_node)
return_node.each_ancestor(:block, :def, :defs).first
end
end
end
end
end
Version data entries
181 entries across 174 versions & 17 rubygems