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Versions: 12
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Contents
# frozen_string_literal: true
module RuboCop
module Cop
# Common functionality for dealing with frozen string literals.
module FrozenStringLiteral
module_function
FROZEN_STRING_LITERAL = '# frozen_string_literal:'.freeze
FROZEN_STRING_LITERAL_ENABLED = '# frozen_string_literal: true'.freeze
FROZEN_STRING_LITERAL_TYPES = %i[str dstr].freeze
def frozen_string_literal_comment_exists?
leading_comment_lines.any? do |line|
MagicComment.parse(line).frozen_string_literal_specified?
end
end
private
def frozen_string_literals_enabled?
ruby_version = processed_source.ruby_version
return false unless ruby_version
# TODO: Whether frozen string literals will be the default in Ruby 3.0
# or not is still unclear as of February 2018.
# It may be necessary to change this code in the future.
# See https://bugs.ruby-lang.org/issues/8976#note-41 for details.
return true if ruby_version >= 3.0
return false unless ruby_version >= 2.3
leading_comment_lines.any? do |line|
MagicComment.parse(line).frozen_string_literal?
end
end
def leading_comment_lines
comments = processed_source.comments
comments.each_with_object([]) do |comment, leading_comments|
next if comment.loc.line > 3
leading_comments << comment.text
end
end
end
end
end
Version data entries
12 entries across 10 versions & 2 rubygems