# File lib/kwala/actions/code_formatting.rb, line 107
  def score
    return 10 if @receiver.empty?
    errors = @receiver.summary.values.inject(0) {|s, v| s + v }
    # For now made up mappings.
    case errors
    when 1..4 : 7
    when 5..12 : 5
    when 13..20 : 3
    else
      1
    end
  end