class Bundler::LockfileParser::Position

def advance!(string)
  lines = string.count("\n")
  if lines > 0
    @line += lines
    @column = string.length - string.rindex("\n")
  else
    @column += string.length
  end
end

def initialize(line, column)
  @line = line
  @column = column
end

def to_s
  "#{line}:#{column}"
end