nativeToValue function

Map<String, Object?> nativeToValue(Object? value)

Converts a native Dart value to a google.protobuf.Value JSON map.

Supported types:

• null → {"nullValue": "NULL_VALUE"}
• num → {"numberValue": n}
• String → {"stringValue": s}
• bool → {"boolValue": b}
• Map<String, Object?> → {"structValue": mapToStruct(m)}
• List → {"listValue": {"values": [...]}}

Throws ArgumentError for unsupported types.

Implementation

Map<String, Object?> nativeToValue(Object? value) {
  if (value == null) {
    return {'nullValue': 'NULL_VALUE'};
  }
  if (value is num) {
    return {'numberValue': value};
  }
  if (value is String) {
    return {'stringValue': value};
  }
  if (value is bool) {
    return {'boolValue': value};
  }
  if (value is Map<String, Object?>) {
    return {'structValue': mapToStruct(value)};
  }
  if (value is List) {
    return {
      'listValue': {'values': value.map((e) => nativeToValue(e)).toList()},
    };
  }
  throw ArgumentError(
    'Cannot convert ${value.runtimeType} to google.protobuf.Value',
  );
}