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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for use of the lambda.(args) syntax.
#
# @example EnforcedStyle: call (default)
# # bad
# lambda.(x, y)
#
# # good
# lambda.call(x, y)
#
# @example EnforcedStyle: braces
# # bad
# lambda.call(x, y)
#
# # good
# lambda.(x, y)
class LambdaCall < Base
include ConfigurableEnforcedStyle
extend AutoCorrector
MSG = 'Prefer the use of `%<prefer>s` over `%<current>s`.'
RESTRICT_ON_SEND = %i[call].freeze
def on_send(node)
return unless node.receiver
if offense?(node)
prefer = prefer(node)
current = node.source
add_offense(node, message: format(MSG, prefer: prefer, current: current)) do |corrector|
opposite_style_detected
corrector.replace(node, prefer)
end
else
correct_style_detected
end
end
private
def offense?(node)
(explicit_style? && node.implicit_call?) || (implicit_style? && !node.implicit_call?)
end
def prefer(node)
receiver = node.receiver.source
arguments = node.arguments.map(&:source).join(', ')
method = explicit_style? ? "call(#{arguments})" : "(#{arguments})"
"#{receiver}.#{method}"
end
def implicit_style?
style == :braces
end
def explicit_style?
style == :call
end
end
end
end
end
Version data entries
11 entries across 11 versions & 3 rubygems