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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# This cop checks for *return* from an *ensure* block.
# Explicit return from an ensure block alters the control flow
# as the return will take precedence over any exception being raised,
# and the exception will be silently thrown away as if it were rescued.
#
# @example
#
# # bad
#
# begin
# do_something
# ensure
# do_something_else
# return
# end
#
# @example
#
# # good
#
# begin
# do_something
# ensure
# do_something_else
# end
class EnsureReturn < Cop
MSG = 'Do not return from an `ensure` block.'.freeze
def on_ensure(node)
ensure_body = node.body
return unless ensure_body
ensure_body.each_node(:return) do |return_node|
add_offense(return_node)
end
end
end
end
end
end
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6,494 entries across 6,488 versions & 24 rubygems