isPoint function

bool isPoint(Uint8List p)

Is Buffer Point

Implementation

bool isPoint(Uint8List p) {
  if (p.length < 33) {
    return false;
  }
  var t = p[0];
  var x = p.sublist(1, 33);

  if (_compare(x, _zero32) == 0) {
    return false;
  }
  if (_compare(x, _ecpP as Uint8List) == 1) {
    return false;
  }
  try {
    decodeFrom(p);
  } catch (err) {
    return false;
  }
  if ((t == 0x02 || t == 0x03) && p.length == 33) {
    return true;
  }
  var y = p.sublist(33);
  if (_compare(y, _zero32) == 0) {
    return false;
  }
  if (_compare(y, _ecpP as Uint8List) == 1) {
    return false;
  }
  if (t == 0x04 && p.length == 65) {
    return true;
  }
  return false;
}