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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of semicolon in if statements.
#
# @example
#
# # bad
# result = if some_condition; something else another_thing end
#
# # good
# result = some_condition ? something : another_thing
#
class IfWithSemicolon < Cop
include OnNormalIfUnless
MSG = 'Do not use if x; Use the ternary operator instead.'
def on_normal_if_unless(node)
return unless node.else_branch
beginning = node.loc.begin
return unless beginning&.is?(';')
add_offense(node)
end
def autocorrect(node)
lambda do |corrector|
corrector.replace(node, correct_to_ternary(node))
end
end
private
def correct_to_ternary(node)
else_code = node.else_branch ? node.else_branch.source : 'nil'
"#{node.condition.source} ? #{node.if_branch.source} : #{else_code}"
end
end
end
end
end
Version data entries
14 entries across 14 versions & 3 rubygems