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Versions: 46
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Stored size: 985 Bytes
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop looks for uses of Perl-style regexp match
# backreferences like $1, $2, etc.
#
# @example
# # bad
# puts $1
#
# # good
# puts Regexp.last_match(1)
class PerlBackrefs < Cop
MSG = 'Avoid the use of Perl-style backrefs.'
def on_nth_ref(node)
add_offense(node)
end
def autocorrect(node)
lambda do |corrector|
backref, = *node
parent_type = node.parent ? node.parent.type : nil
if %i[dstr xstr regexp].include?(parent_type)
corrector.replace(node.source_range,
"{Regexp.last_match(#{backref})}")
else
corrector.replace(node.source_range,
"Regexp.last_match(#{backref})")
end
end
end
end
end
end
end
Version data entries
46 entries across 27 versions & 3 rubygems