coffee-fmt/test/sample4.coffee

a `gofmt` inspired Coffeescript formatter/beautifier.

syntaxErrorToString = ->
  return Error::toString.call @ unless @code and @location

  {first_line, first_column, last_line, last_column} = @location
  last_line ?= first_line
  last_column ?= first_column

  filename = @filename or '[stdin]'
  codeLine = @code.split('\n')[first_line]
  start    = first_column
  # Show only the first line on multi-line errors.
  end      = if first_line is last_line then last_column + 1 else codeLine.length
  marker   = codeLine[...start].replace(/[^\s]/g, ' ') + repeat('^', end - start)

  # Check to see if we're running on a color-enabled TTY.
  if process?
    colorsEnabled = process.stdout.isTTY and not process.env.NODE_DISABLE_COLORS

  if @colorful ? colorsEnabled
    colorize = (str) -> "\x1B[1;31m#{str}\x1B[0m"
    codeLine = codeLine[...start] + colorize(codeLine[start...end]) + codeLine[end..]
    marker   = colorize marker

  """
    #{filename}:#{first_line + 1}:#{first_column + 1}: error: #{@message}
    #{codeLine}
    #{marker}
  """