Contents

# encoding: utf-8

module Rubocop
  module Cop
    module Lint
      # This cop checks for *rescue* blocks targeting the Exception class.
      class RescueException < Cop
        MSG = 'Avoid rescuing the Exception class.'

        def on_resbody(node)
          return unless node.children.first
          rescue_args = node.children.first.children
          if rescue_args.any? { |a| targets_exception?(a) }
            add_offence(:warning, node.location.expression, MSG)
          end

          super
        end

        def targets_exception?(rescue_arg_node)
          return false unless rescue_arg_node.type == :const
          namespace, klass_name = *rescue_arg_node
          return false unless namespace.nil? || namespace.type == :cbase
          klass_name == :Exception
        end
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 2 rubygems

Version	Path
rubocop-0.9.1	lib/rubocop/cop/lint/rescue_exception.rb
sabat-rubocop-0.9.0	lib/rubocop/cop/lint/rescue_exception.rb
rubocop-0.9.0	lib/rubocop/cop/lint/rescue_exception.rb