protected ObjectReflectionMessagePackSerializer(Type type, SerializationContext context, SerializingMember[] members)
: base(type, (context ?? SerializationContext.Default).CompatibilityOptions.PackerCompatibilityOptions)
{
if (type.GetIsAbstract() || type.GetIsInterface())
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(type);
}
this._createInstance = () => Activator.CreateInstance(type);
//Expression.Lambda<Func<T>>(
// typeof(T).GetIsValueType()
// ? Expression.Default(typeof(T)) as Expression
// : Expression.New(typeof(T).GetConstructor(ReflectionAbstractions.EmptyTypes))
// ).Compile();
var isPackable = typeof(IPackable).IsAssignableFrom(type);
var isUnpackable = typeof(IUnpackable).IsAssignableFrom(type);
if (isPackable && isUnpackable)
{
this._memberSerializers = null;
this._indexMap = null;
this._isCollection = null;
this._nilImplications = null;
this._memberNames = null;
}
else
{
this._memberSerializers =
members.Select(
m => m.Member == null ? NullSerializer.Instance : context.GetSerializer(m.Member.GetMemberValueType())).ToArray
(
);
this._indexMap =
members
.Select((m, i) => new KeyValuePair<SerializingMember, int>(m, i))
.Where(kv => kv.Key.Member != null)
.ToDictionary(kv => kv.Key.Contract.Name, kv => kv.Value);
this._isCollection =
members.Select(
m => m.Member == null ? CollectionTraits.NotCollection : m.Member.GetMemberValueType().GetCollectionTraits()).
Select(t => t.CollectionType != CollectionKind.NotCollection).ToArray();
// NilImplication validity check
foreach (var member in members)
{
switch (member.Contract.NilImplication)
{
case NilImplication.Null:
{
if (member.Member.GetMemberValueType().GetIsValueType() &&
Nullable.GetUnderlyingType(member.Member.GetMemberValueType()) == null)
{
throw SerializationExceptions.NewValueTypeCannotBeNull(
member.Contract.Name, member.Member.GetMemberValueType(), member.Member.DeclaringType
);
}
if (!member.Member.CanSetValue())
{
throw SerializationExceptions.NewReadOnlyMemberItemsMustNotBeNull(member.Contract.Name);
}
break;
}
}
}
this._nilImplications = members.Select(m => m.Contract.NilImplication).ToArray();
this._memberNames = members.Select(m => m.Contract.Name).ToArray();
}
if (isPackable)
{
this._packToMessage = (target, packer, packingOptions) =>
{
((IPackable)target).PackToMessage(packer, packingOptions);
//typeof(T).GetInterfaceMap(typeof(IPackable)).TargetMethods.Single().Invoke(target, new object[] { packer, packingOptions });
};
this._memberGetters = null;
}
else
{
this._packToMessage = null;
this._memberGetters =
members.Select<SerializingMember,Func<object,object>>(
m => m.Member == null ? (target => null)
: CreateMemberGetter(m)).ToArray();
}
if (isUnpackable)
{
this._unpackFromMessage = delegate(ref object target, Unpacker value)
{
((IUnpackable)target).UnpackFromMessage(value);
};
this._memberSetters = null;
}
else
{
this._unpackFromMessage = null;
this._memberSetters =
members.Select(
m =>
m.Member == null
? delegate(ref object target, object memberValue) { }
:
m.Member.CanSetValue()
? CreateMemberSetter(m)
: UnpackHelpers.IsReadOnlyAppendableCollectionMember(m.Member)
? default(MemberSetter)
: ThrowGetOnlyMemberIsInvalid(m.Member)
).ToArray();
}
}
