Contents

# encoding: utf-8

module Rubocop
  module Cop
    module Style
      # This cop looks for trailing blank lines in the source code.
      class TrailingBlankLines < Cop
        MSG = '%d trailing blank lines detected.'

        def investigate(processed_source)
          blank_lines = 0

          processed_source.lines.reverse_each do |line|
            if line.blank?
              blank_lines += 1
            else
              break
            end
          end

          if blank_lines > 0
            range_size =
              processed_source.raw_lines.to_a[-blank_lines..-1].join.length
            range = source_range(processed_source.buffer,
                                 processed_source[0...-blank_lines],
                                 0, range_size)
            add_offense(range, range, format(MSG, blank_lines))
          end
        end

        def autocorrect(range)
          # Bail out if there's also trailing whitespace, because
          # auto-correction in the two cops would result in clobbering.
          if range.source =~ / / &&
              config.for_cop('TrailingWhitespace')['Enabled']
            return
          end

          @corrections << ->(corrector) { corrector.remove(range) }
        end
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
rubocop-0.20.1	lib/rubocop/cop/style/trailing_blank_lines.rb
rubocop-0.20.0	lib/rubocop/cop/style/trailing_blank_lines.rb
rubocop-0.19.1	lib/rubocop/cop/style/trailing_blank_lines.rb
rubocop-0.19.0	lib/rubocop/cop/style/trailing_blank_lines.rb