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Contents
# encoding: utf-8
module RuboCop
module Cop
module Style
# Checks for uses of while with a negated condition.
class NegatedWhile < Cop
include NegativeConditional
MSG = 'Favor `%s` over `%s` for negative conditions.'
def on_while(node)
check_negative_conditional(node)
end
def on_until(node)
check_negative_conditional(node)
end
def message(node)
if node.type == :while
format(MSG, 'until', 'while')
else
format(MSG, 'while', 'until')
end
end
private
def autocorrect(node)
@corrections << lambda do |corrector|
condition, _body, _rest = *node
# unwrap the negated portion of the condition (a send node)
pos_condition, _method, = *condition
corrector.replace(
node.loc.keyword,
node.type == :while ? 'until' : 'while')
corrector.replace(condition.loc.expression,
pos_condition.loc.expression.source)
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems