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# frozen_string_literal: true
require_relative '../../migration_helpers'
module RuboCop
module Cop
module Migration
# Cop that checks if `add_concurrent_index` is used with `up`/`down` methods
# and not `change`.
class AddConcurrentIndex < RuboCop::Cop::Cop
include MigrationHelpers
MSG = '`add_concurrent_index` is not reversible so you must manually define ' \
'the `up` and `down` methods in your migration class, using `remove_concurrent_index` in `down`'.freeze
def on_send(node)
return unless in_migration?(node)
name = node.children[1]
return unless name == :add_concurrent_index
node.each_ancestor(:def) do |def_node|
next unless method_name(def_node) == :change
add_offense(def_node, location: :name)
end
end
def method_name(node)
node.children.first
end
end
end
end
end
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