MongoDB.Bson.Serialization.Serializers.DecimalSerializer.Deserialize C# (CSharp) Метод

        public override object Deserialize(
            BsonReader bsonReader,
            Type nominalType,
            Type actualType,
            IBsonSerializationOptions options)
        {
            VerifyTypes(nominalType, actualType, typeof(decimal));
            var representationSerializationOptions = EnsureSerializationOptions<RepresentationSerializationOptions>(options);

            var bsonType = bsonReader.GetCurrentBsonType();
            switch (bsonType)
            {
                case BsonType.Array:
                    var array = (BsonArray)BsonArraySerializer.Instance.Deserialize(bsonReader, typeof(BsonArray), null);
                    var bits = new int[4];
                    bits[0] = array[0].AsInt32;
                    bits[1] = array[1].AsInt32;
                    bits[2] = array[2].AsInt32;
                    bits[3] = array[3].AsInt32;
                    return new decimal(bits);
                case BsonType.Double:
                    return representationSerializationOptions.ToDecimal(bsonReader.ReadDouble());
                case BsonType.Int32:
                    return representationSerializationOptions.ToDecimal(bsonReader.ReadInt32());
                case BsonType.Int64:
                    return representationSerializationOptions.ToDecimal(bsonReader.ReadInt64());
                case BsonType.String:
                    return XmlConvert.ToDecimal(bsonReader.ReadString());
                default:
                    var message = string.Format("Cannot deserialize Decimal from BsonType {0}.", bsonType);
                    throw new Exception(message);
            }
        }