wktFromJson function

Object? wktFromJson(String typeName, Object? json, Map<String, String>? features, [ AnyTypeResolver? resolver, ])

Converts proto3-JSON json into a decoded WKT message map (snake_case). resolver is the per-call Any resolver (unused by the structural WKTs, threaded only for signature uniformity).

Implementation

Object? wktFromJson(
  String typeName,
  Object? json,
  Map<String, String>? features, [
  AnyTypeResolver? resolver,
]) {
  final wrapped = _wktWrappers[typeName];
  if (wrapped != null) {
    if (json == null) return <String, Object?>{};
    return {'value': fieldFromJson(json, wrapped, features: features)};
  }
  switch (typeName) {
    case 'google.protobuf.Timestamp':
      if (json is! String) {
        throw FormatException('Timestamp must be a JSON string');
      }
      final ts = rfc3339ToTimestamp(json);
      _checkTimestampRange(_asWktMap(ts));
      return ts;
    case 'google.protobuf.Duration':
      if (json is! String) {
        throw FormatException('Duration must be a JSON string');
      }
      final m = stringToDuration(json);
      _checkDurationRange(m);
      return m;
    case 'google.protobuf.FieldMask':
      if (json is! String) {
        throw FormatException('FieldMask must be a JSON string');
      }
      return _fieldMaskFromJson(json);
    case 'google.protobuf.Struct':
      return _structMsgFromJson(json);
    case 'google.protobuf.Value':
      return _valueMsgFromJson(json);
    case 'google.protobuf.ListValue':
      return _listValueMsgFromJson(json);
  }
  return json;
}