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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Layout
# Checks for unnecessary additional spaces inside the delimiters of
# %i/%w/%x literals.
#
# @example
#
# # good
# %i(foo bar baz)
#
# # bad
# %w( foo bar baz )
#
# # bad
# %x( ls -l )
class SpaceInsidePercentLiteralDelimiters < Cop
include MatchRange
include PercentLiteral
MSG = 'Do not use spaces inside percent literal delimiters.'.freeze
BEGIN_REGEX = /\A( +)/.freeze
END_REGEX = /(?<!\\)( +)\z/.freeze
def on_array(node)
process(node, '%i', '%I', '%w', '%W')
end
def on_xstr(node)
process(node, '%x')
end
def on_percent_literal(node)
add_offenses_for_unnecessary_spaces(node)
end
def autocorrect(node)
lambda do |corrector|
regex_matches(node) do |match_range|
corrector.remove(match_range)
end
end
end
private
def add_offenses_for_unnecessary_spaces(node)
return unless node.single_line?
regex_matches(node) do |match_range|
add_offense(node, location: match_range)
end
end
def regex_matches(node, &blk)
[BEGIN_REGEX, END_REGEX].each do |regex|
each_match_range(contents_range(node), regex, &blk)
end
end
end
end
end
end
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