toString method Null safety

  1. @override
String toString()
override

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  final b = StringBuffer();
  b.writeln('$runtimeType');
  b.writeln('  Version: $version');
  b.writeln('  Issuer');
  for (final entry in issuer) {
    b.writeln('    ${entry.key.name}: ${asn1ToString(entry.value)}');
  }
  b.writeln('  Serial: $serial');
  b.writeln('  Digest Algorithm: ${digestAlgorithmID.name}');
  b.writeln('  Signed Attributes:');
  for (final entry in signedAttributes) {
    b.writeln(
        '    ${entry.key.name}: ${entry.value.map((e) => asn1ToString(e)).join(', ')}');
  }
  b.writeln('  Signature Algorithm: ${signatureAlgorithmID.name}');
  b.writeln('  Signature: ${toHex(signature)}');
  b.writeln('  Non-signed Attributes:');
  for (final entry in unsignedAttributes) {
    b.writeln(
        '    ${entry.key.name}: ${entry.value.map((e) => asn1ToString(e)).join(', ')}');
  }
  return b.toString();
}