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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 < Cop
include ConfigurableEnforcedStyle
def on_send(node)
return unless node.receiver && node.method?(:call)
if offense?(node)
add_offense(node) { opposite_style_detected }
else
correct_style_detected
end
end
def autocorrect(node)
lambda do |corrector|
if explicit_style?
receiver = node.receiver.source
replacement = node.source.sub("#{receiver}.", "#{receiver}.call")
corrector.replace(node, replacement)
else
add_parentheses(node, corrector) unless node.parenthesized?
corrector.remove(node.loc.selector)
end
end
end
private
def offense?(node)
explicit_style? && node.implicit_call? ||
implicit_style? && !node.implicit_call?
end
def message(_node)
if explicit_style?
'Prefer the use of `lambda.call(...)` over `lambda.(...)`.'
else
'Prefer the use of `lambda.(...)` over `lambda.call(...)`.'
end
end
def implicit_style?
style == :braces
end
def explicit_style?
style == :call
end
end
end
end
end
Version data entries
14 entries across 14 versions & 3 rubygems