parseOn method

  1. @override
  2. @noBoundsChecks
Result<String> parseOn(
  1. Context context
)
override

Primitive method doing the actual parsing.

The method is overridden in concrete subclasses to implement the parser specific logic. The methods takes a parse context and returns the resulting context, which is either a Success or Failure context.

Implementation

@override
@noBoundsChecks
Result<String> parseOn(Context context) {
  final buffer = context.buffer;
  final start = context.position;
  final end = buffer.length;
  var position = start;
  var count = 0;
  while (count < max &&
      position < end &&
      predicate.test(buffer.codeUnitAt(position))) {
    position++;
    count++;
  }
  return count >= min
      ? context.success(buffer.substring(start, position), position)
      : context.failure(message, position);
}