decodeString method

Implementation

dynamic decodeString(dynamic src) {
  GsonParsable p = src is GsonParsable
      ? src
      : src is String
          ? new GsonParsable(src)
          : throw ("The src is not a valid input to decode an Array from");

  String str = '"';

  if (p.actual() == "\"" || p.actual() == "\'") {
    String search = p.next();
    while (p.actual() != search) {
      if (p.actual() == "\\") {
        str += p.next();
      } else if (p.actual() == "\"") {
        str += "\\" + p.next();
        continue;
      }
      str += p.next();
    }
    if (!p.ended) {
      p.skip();
    }
  } else if (_PURE_STRING.hasMatch(p.actual())) {
    while (_PURE_STRING.hasMatch(p.actual())) {
      if (p.actual() == "\\") {
        str += p.next();
      }
      str += p.actual();
      if(p.hasNext()) {
        p.skip();
      }
      else {
        break;
      }
    }
  } else {
    throw p.error(
        "String has to start with a \"\\\"\" or \"\\\'\" when it contains some characters");
  }
  str = json.decode(str + '"');
  return new RegExp(r'''^[ \t]*(true)[ \t]*$''').hasMatch(str) ? true : RegExp(r'''^[ \t]*(false)[ \t]*$''').hasMatch(str) ? false : num.tryParse(str) ?? str;
}