StringScanner constructor

StringScanner(String string, { dynamic sourceUrl, int position })

Creates a new StringScanner that starts scanning from position.

position defaults to 0, the beginning of the string. sourceUrl is the URL of the source of the string being scanned, if available. It can be a String, a Uri, or null.

Implementation 

StringScanner(this.string, {sourceUrl, int position})
    : sourceUrl = sourceUrl is String ? Uri.parse(sourceUrl) : sourceUrl {
  if (position != null) this.position = position;
}