process method

StubbleResult? process(ProcessMessage msg, StubbleContext context)

Implementation

StubbleResult? process(ProcessMessage msg, StubbleContext context) {
  final charCode = msg.charCode;

  name ??= '';

  if (charCode == eos) {
    return StubbleResult(
        err: StubbleError(
            code: errorUnexpectedEndOfSource,
            text: 'block name error: unexpected end of source'));
  } else if (charCode >= 48 && charCode <= 57) {
    if (name!.isEmpty) {
      return StubbleResult(
          err: StubbleError(
              code: errorBlockNameWrongSpecified,
              text: 'Block name should not start with number character'));
    }

    name = name! + String.fromCharCode(charCode);
  } else if ((charCode >= 65 && charCode <= 90) ||
      (charCode >= 97 && charCode <= 122) ||
      charCode == 95) {
    name = name! + String.fromCharCode(charCode);
  } else if (charCode == space || charCode == closeBracket) {
    if (name!.isEmpty) {
      return StubbleResult(
        err: StubbleError(
          code: errorBlockNameWrongSpecified,
          text: 'Block name is empty',
        ),
      );
    }

    return StubbleResult(
        pop: true,
        message: NotifyMessage(
            type: notifyNameResult, value: name, charCode: charCode));
  } else {
    return StubbleResult(
      err: StubbleError(
        code: errorNotAValidBlockNameChar,
        text:
            'Character "${String.fromCharCode(charCode)}" is not a valid in block name',
      ),
    );
  }

  return null;
}