public virtual Type CheckType(MessageSerializedPropertyInfo propertyInfo)
{
if (NumericFunctions.IsIntegerType(propertyInfo.ElementType) &&
NumericFunctions.IsPowerOfTwo((ulong)propertyInfo.MessagePropertyAttribute.Length))
{
return(typeof(TypeSerializerNumeric <>).MakeGenericType(new[] { propertyInfo.ElementType }));
}
return(null);
}
public void Check(MessageSerializedPropertyInfo messageSerializedPropertyInfo, SerializationDefaults serializationDefaults, MessageClassAttribute classAttribute)
{
var elementType = messageSerializedPropertyInfo.ElementType;
var messagePropertyAttribute = messageSerializedPropertyInfo.MessagePropertyAttribute;
if (!messagePropertyAttribute.IsLengthSpecified && NumericFunctions.IsIntegerType(elementType))
{
// If we are using BCD the max length isn't the number of bytes of the type,
// it's however long the maximum number is. Sort of.
// As an example, the MaxUInt is 4294967295, which is 10 digits.
// So really, it is 9 digits. Of course that doesn't quite work
// because that is 4 1/2 bytes so really we should support 5 bytes but limit
// how many we fill in but for now we will just say it is the minimum number
// of bytes that things can safely be fit in.
// elementType.GetField("MaxValue").GetValue(null).ToString()
// The call to GetField uses Reflection to the get static MaxValue field.
// The call to GetValue(null) gets the value of the MaxValue field (the null is because it's static)
// Then the ToString is to figure out the number of digits that can be used.
Type lengthType = elementType.IsEnum ? Enum.GetUnderlyingType(elementType) : elementType;
messagePropertyAttribute.Length = messagePropertyAttribute.IsBcd ? (lengthType.GetField("MaxValue").GetValue(null).ToString().Length + 1) / 2 : Marshal.SizeOf(lengthType);
}
if (!messagePropertyAttribute.IsLengthSpecified && messageSerializedPropertyInfo.ElementIsMessageSerializableObject)
{
MessageSerializedClassInfo classInfo = Serializer.Instance.GetClassInfo(elementType);
messagePropertyAttribute.Length = classInfo.TotalLengthWithoutVariableData;
}
if (!messagePropertyAttribute.IsVariableLengthSpecified && messagePropertyAttribute.BlobType == BlobTypes.Data)
{
messagePropertyAttribute.VariableLength = true;
}
if (!messagePropertyAttribute.IsVariableLengthSpecified && messagePropertyAttribute.Length == 0 && elementType.FullName == typeof(string).FullName)
{
messagePropertyAttribute.VariableLength = true;
}
if (!messagePropertyAttribute.IsMinLengthSpecified)
{
messagePropertyAttribute.MinLength = 0;
}
if (!messagePropertyAttribute.IsMaxLengthSpecified)
{
messagePropertyAttribute.MaxLength = -1;
}
if (!messagePropertyAttribute.IsMinimizeVariableLengthSpecified)
{
messagePropertyAttribute.MinimizeVariableLength = false;
}
}