35 lines
800 B
Ruby
35 lines
800 B
Ruby
# frozen_string_literal: true
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module RuboCop
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module Cop
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# Bans the use of 'catch/throw', as exceptions are better for errors and
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# they are equivalent to 'goto' for flow control, with all the problems
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# that implies.
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#
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# @example
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# # bad
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# catch(:error) do
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# throw(:error)
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# end
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#
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# # good
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# begin
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# raise StandardError
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# rescue StandardError => err
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# # ...
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# end
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#
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class BanCatchThrow < RuboCop::Cop::Cop
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MSG = "Do not use catch or throw unless a gem's API demands it."
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def on_send(node)
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receiver, method_name, _ = *node
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return unless receiver.nil? && %i[catch throw].include?(method_name)
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add_offense(node, location: :expression)
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end
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end
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end
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end
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