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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for unparenthesized method calls in the argument list
# of a parenthesized method call.
#
# @example
# # good
# method1(method2(arg))
#
# # bad
# method1(method2 arg)
class NestedParenthesizedCalls < Base
include RangeHelp
include AllowedMethods
extend AutoCorrector
MSG = 'Add parentheses to nested method call `%<source>s`.'
def on_send(node)
return unless node.parenthesized?
node.each_child_node(:send, :csend) do |nested|
next if allowed_omission?(nested)
message = format(MSG, source: nested.source)
add_offense(nested.source_range, message: message) do |corrector|
autocorrect(corrector, nested)
end
end
end
alias on_csend on_send
private
def autocorrect(corrector, nested)
first_arg = nested.first_argument.source_range
last_arg = nested.last_argument.source_range
leading_space =
range_with_surrounding_space(range: first_arg.begin,
side: :left,
whitespace: true,
continuations: true)
corrector.replace(leading_space, '(')
corrector.insert_after(last_arg, ')')
end
def allowed_omission?(send_node)
!send_node.arguments? || send_node.parenthesized? ||
send_node.setter_method? || send_node.operator_method? ||
allowed?(send_node)
end
def allowed?(send_node)
send_node.parent.arguments.one? &&
allowed_method?(send_node.method_name) &&
send_node.arguments.one?
end
end
end
end
end
Version data entries
27 entries across 27 versions & 3 rubygems