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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for chaining of a block after another block that spans
# multiple lines.
#
# @example
#
# Thread.list.find_all do |t|
# t.alive?
# end.map do |t|
# t.object_id
# end
class MultilineBlockChain < Cop
include RangeHelp
MSG = 'Avoid multi-line chains of blocks.'.freeze
def on_block(node)
node.send_node.each_node(:send) do |send_node|
receiver = send_node.receiver
next unless receiver && receiver.block_type? && receiver.multiline?
range = range_between(receiver.loc.end.begin_pos,
node.send_node.source_range.end_pos)
add_offense(nil, location: range)
# Done. If there are more blocks in the chain, they will be
# found by subsequent calls to on_block.
break
end
end
end
end
end
end
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