class FoodCritic::Template::ExpressionExtractor

def lines_with_offsets(template_code)
  line_offsets = []
  template_code.scan(/$/) do |m|
    line_offsets << Regexp.last_match.offset(0).first
  end
  line_offsets.each_with_index.map { |pos, ln| [ln + 1, pos] }
end