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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module InternalAffairs
# Enforces the use of `node.lambda_or_proc?` instead of `node.lambda? || node.proc?`.
#
# @example
# # bad
# node.lambda? || node.proc?
# node.proc? || node.lambda?
#
# # good
# node.lambda_or_proc?
#
class LambdaOrProc < Base
extend AutoCorrector
MSG = 'Use `%<prefer>s`.'
# @!method lambda_or_proc(node)
def_node_matcher :lambda_or_proc, <<~PATTERN
{
(or $(send _node :lambda?) $(send _node :proc?))
(or $(send _node :proc?) $(send _node :lambda?))
(or
(or _ $(send _node :lambda?)) $(send _node :proc?))
(or
(or _ $(send _node :proc?)) $(send _node :lambda?))
}
PATTERN
def on_or(node)
return unless (lhs, rhs = lambda_or_proc(node))
offense = lhs.receiver.source_range.join(rhs.source_range.end)
prefer = "#{lhs.receiver.source}.lambda_or_proc?"
add_offense(offense, message: format(MSG, prefer: prefer)) do |corrector|
corrector.replace(offense, prefer)
end
end
end
end
end
end
Version data entries
166 entries across 165 versions & 17 rubygems