parseBigInt static method

BigInt? parseBigInt(
  1. Object? value, [
  2. BigInt? def
])

Tries to parse a BigInt.

  • Returns def if value is invalid.

Implementation

static BigInt? parseBigInt(Object? value, [BigInt? def]) {
  if (value == null) return def;

  if (value is BigInt) {
    return value;
  } else if (value is num) {
    return BigInt.from(value);
  } else if (value is DateTime) {
    return BigInt.from(value.millisecondsSinceEpoch);
  } else {
    var s = _valueAsString(value);
    if (s.isEmpty) {
      return def;
    }

    var n = BigInt.tryParse(s);
    if (n == null) {
      s = s.replaceAll(_regExpNotNumber, '');
      n = BigInt.tryParse(s);
    }

    return n ?? def;
  }
}