44 lines
1.1 KiB
Ruby
44 lines
1.1 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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module RuboCop
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module Cop
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module Homebrew
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# Enforces the use of `collection.exclude?(obj)`
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# over `!collection.include?(obj)`.
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#
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# @note
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# This cop is unsafe because false positive will occur for
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# receiver objects that do not have an `exclude?` method. (e.g. `IPAddr`)
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#
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# @example
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# # bad
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# !array.include?(2)
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# !hash.include?(:key)
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#
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# # good
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# array.exclude?(2)
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# hash.exclude?(:key)
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#
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class NegateInclude < Base
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extend AutoCorrector
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MSG = "Use `.exclude?` and remove the negation part."
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RESTRICT_ON_SEND = [:!].freeze
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def_node_matcher :negate_include_call?, <<~PATTERN
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(send (send $!nil? :include? $_) :!)
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PATTERN
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def on_send(node)
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return unless (receiver, obj = negate_include_call?(node))
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add_offense(node) do |corrector|
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corrector.replace(node, "#{receiver.source}.exclude?(#{obj.source})")
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end
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end
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end
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end
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end
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end
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