decodeObjectMap<T extends Coding> method

Map<String, T?>? decodeObjectMap<T extends Coding>(
  1. String key,
  2. T inflate()
)

Returns a map of Ts associated with key.

inflate must create an empty instance of T. The value associated with key must be a KeyedArchive (a Map), where each value is a T. For each key-value pair of the archived map, inflate is invoked and each value is decoded into the instance of T.

Implementation

Map<String, T?>? decodeObjectMap<T extends Coding>(String key, T Function() inflate) {
  final v = _getValue(key);
  if (v == null) {
    return null;
  }

  if (v is! Map<String, dynamic>) {
    throw ArgumentError(
      "Cannot decode key '$key' as 'Map<String, $T>', because value is not a Map. Actual value: '$v'.",
    );
  }

  return {for (var k in v.keys) k: _decodedObject(v[k] as KeyedArchive?, inflate)};
}