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Contents
# frozen_string_literal: true
module RuboCop
module Cop
# Common functionality for handling percent literal delimiters.
class PreferredDelimiters
attr_reader :type, :config
PERCENT_LITERAL_TYPES = %w[% %i %I %q %Q %r %s %w %W %x].freeze
def initialize(type, config, preferred_delimiters)
@type = type
@config = config
@preferred_delimiters = preferred_delimiters
end
def delimiters
preferred_delimiters[type].split(//)
end
private
def ensure_valid_preferred_delimiters
invalid = preferred_delimiters_config.keys -
(PERCENT_LITERAL_TYPES + %w[default])
return if invalid.empty?
raise ArgumentError,
"Invalid preferred delimiter config key: #{invalid.join(', ')}"
end
def preferred_delimiters
@preferred_delimiters ||=
begin
ensure_valid_preferred_delimiters
if preferred_delimiters_config.key?('default')
Hash[PERCENT_LITERAL_TYPES.map do |type|
[type, preferred_delimiters_config[type] ||
preferred_delimiters_config['default']]
end]
else
preferred_delimiters_config
end
end
end
def preferred_delimiters_config
config.for_cop('Style/PercentLiteralDelimiters')['PreferredDelimiters']
end
end
end
end
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