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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# Checks that there are no repeated exceptions
# used in 'rescue' expressions.
#
# @example
# # bad
# begin
# something
# rescue FirstException
# handle_exception
# rescue FirstException
# handle_other_exception
# end
#
# # good
# begin
# something
# rescue FirstException
# handle_exception
# rescue SecondException
# handle_other_exception
# end
#
class DuplicateRescueException < Base
include RescueNode
MSG = 'Duplicate `rescue` exception detected.'
def on_rescue(node)
return if rescue_modifier?(node)
node.resbody_branches.each_with_object(Set.new) do |resbody, previous|
rescued_exceptions = resbody.exceptions
rescued_exceptions.each do |exception|
add_offense(exception) unless previous.add?(exception)
end
end
end
end
end
end
end
Version data entries
186 entries across 179 versions & 17 rubygems