parse method

  1. @override
ParseResult parse(
  1. String source
)
override

Attempts to parse the source string matching this element.

Returns a ParseResult containing the parsed lexeme and remaining string on success. On failure, returns a failed ParseResult.

Implementation

@override
ParseResult parse(String source) {
  final matched = caseSensitive
      ? source.startsWith(value)
      : source.toLowerCase().startsWith(value.toLowerCase());
  if (matched) {
    return ParseResult(
      true,
      source.substring(value.length),
      lexeme: source.substring(0, value.length),
      element: toString(),
    );
  }
  return ParseResult(false, source, element: toString());
}