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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# This cop checks for top level return with arguments. If there is a
# top-level return statement with an argument, then the argument is
# always ignored. This is detected automatically since Ruby 2.7.
#
# @example
#
# # Detected since Ruby 2.7
# return 1 # 1 is always ignored.
class TopLevelReturnWithArgument < Base
# This cop works by validating the ancestors of the return node. A
# top-level return node's ancestors should not be of block, def, or
# defs type.
MSG = 'Top level return with argument detected.'
def on_return(return_node)
add_offense(return_node) if return_node.arguments? && ancestors_valid?(return_node)
end
private
def ancestors_valid?(return_node)
prohibited_ancestors = return_node.each_ancestor(:block, :def, :defs)
prohibited_ancestors.none?
end
end
end
end
end
Version data entries
73 entries across 73 versions & 8 rubygems