public override object Get(SerializationContext context, object providerParameter)
{
var schema = (providerParameter ?? this._defaultSchema) as PolymorphismSchema;
if (schema == null || schema.UseDefault || schema.TargetType != typeof(T))
{
// No schema is applied or this provider is used for container but the schema is only applied for keys/items.
if (this._defaultSerializer == null)
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(typeof(T));
}
// Fallback.
return(this._defaultSerializer);
}
if (schema.UseTypeEmbedding)
{
return(new TypeEmbedingPolymorphicMessagePackSerializer <T>(context, schema));
}
else
{
return(new KnownTypePolymorphicMessagePackSerializer <T>(context, schema));
}
}
public static void EmitConstruction(TracingILGenerator il, LocalBuilder target, Action <TracingILGenerator> initialCountLoadingEmitter)
{
Contract.Requires(il != null);
Contract.Requires(target != null);
// TODO: For collection, supports .ctor(IEnumerable<> other)
if (target.LocalType.IsAbstract || target.LocalType.IsInterface)
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(target.LocalType);
}
if (target.LocalType.IsArray)
{
Contract.Assert(initialCountLoadingEmitter != null);
initialCountLoadingEmitter(il);
il.EmitNewarr(target.LocalType.GetElementType());
il.EmitAnyStloc(target);
return;
}
ConstructorInfo ctor = target.LocalType.GetConstructor(_ctor_Int32_ParameterTypes);
if (ctor != null && initialCountLoadingEmitter != null && typeof(IEnumerable).IsAssignableFrom(target.LocalType))
{
if (target.LocalType.IsValueType)
{
// Same as general method call
var capacity = il.DeclareLocal(typeof(int), "capacity");
initialCountLoadingEmitter(il);
il.EmitAnyStloc(capacity);
il.EmitAnyLdloca(target);
il.EmitAnyLdloc(capacity);
il.EmitCallConstructor(ctor);
}
else
{
initialCountLoadingEmitter(il);
il.EmitNewobj(ctor);
il.EmitAnyStloc(target);
}
return;
}
if (target.LocalType.IsValueType)
{
// ValueType instance has been initialized by the runtime.
return;
}
ctor = target.LocalType.GetConstructor(Type.EmptyTypes);
if (ctor == null)
{
throw SerializationExceptions.NewTargetDoesNotHavePublicDefaultConstructorNorInitialCapacity(target.LocalType);
}
il.EmitNewobj(ctor);
il.EmitAnyStloc(target);
}
public ListExpressionMessagePackSerializer(SerializationContext context, CollectionTraits traits)
: base(context, traits)
{
Type type = typeof(T);
if (type.GetIsAbstract())
{
type = context.DefaultCollectionTypes.GetConcreteType(typeof(T)) ?? type;
}
if (type.IsArray)
{
var capacityParameter = Expression.Parameter(typeof(int), "length");
this._createInstanceWithCapacity =
Expression.Lambda <Func <int, T> >(
Expression.NewArrayBounds(type.GetElementType(), capacityParameter),
capacityParameter
).Compile();
this._createInstance = null;
}
else if (type.GetIsAbstract())
{
this._createInstance = () => { throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(type); };
this._createInstanceWithCapacity = null;
}
else
{
var constructor = ExpressionSerializerLogics.GetCollectionConstructor(context, type);
if (constructor == null)
{
this._createInstance = () => { throw SerializationExceptions.NewTargetDoesNotHavePublicDefaultConstructorNorInitialCapacity(type); };
this._createInstanceWithCapacity = null;
}
else
{
if (constructor.GetParameters().Length == 1)
{
this._createInstance = null;
var capacityParameter = Expression.Parameter(typeof(int), "parameter");
this._createInstanceWithCapacity =
Expression.Lambda <Func <int, T> >(
Expression.New(constructor, capacityParameter),
capacityParameter
).Compile();
}
else
{
this._createInstanceWithCapacity = null;
this._createInstance =
Expression.Lambda <Func <T> >(
Expression.New(constructor)
).Compile();
}
}
}
}
public ListReflectionMessagePackSerializer(Type type, SerializationContext context, CollectionTraits traits)
: base(type, context, traits)
{
if (type.GetIsAbstract())
{
type = context.DefaultCollectionTypes.GetConcreteType(type) ?? type;
}
if (type.IsArray)
{
var elementType = type.GetElementType();
this._createInstanceWithCapacity = length =>
{
return(Array.CreateInstance(elementType, length));
};
this._createInstance = null;
}
else if (type.GetIsAbstract())
{
this._createInstance = () => { throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(type); };
this._createInstanceWithCapacity = null;
}
else
{
var constructor = ReflectionSerializerLogics.GetCollectionConstructor(context, type);
if (constructor == null)
{
this._createInstance = () => { throw SerializationExceptions.NewTargetDoesNotHavePublicDefaultConstructorNorInitialCapacity(type); };
this._createInstanceWithCapacity = null;
}
else
{
if (constructor.GetParameters().Length == 1)
{
this._createInstance = null;
this._createInstanceWithCapacity = length => constructor.Invoke(new object[] { length });
}
else
{
this._createInstanceWithCapacity = null;
this._createInstance = () => constructor.Invoke(new object[0]);
}
}
}
}
public static void GetConcreteSerializer(
SerializationContext context,
PolymorphismSchema schema,
Type abstractType,
Type targetType,
Type exampleType,
out ICollectionInstanceFactory factory,
out IMessagePackSingleObjectSerializer serializer
)
{
if (abstractType == targetType)
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(abstractType);
}
serializer = context.GetSerializer(targetType, schema);
factory = serializer as ICollectionInstanceFactory;
if (factory == null && (serializer as IPolymorphicDeserializer) == null)
{
throw SerializationExceptions.NewIncompatibleCollectionSerializer(abstractType, serializer.GetType(), exampleType);
}
}
private void BuildCollectionUnpackFrom(TContext context, CollectionTraits traits)
{
this.EmitMethodPrologue(context, SerializerMethod.UnpackFromCore);
TConstruct construct = null;
try
{
Type instanceType;
if (typeof(TObject).GetIsInterface() || typeof(TObject).GetIsAbstract())
{
instanceType = context.SerializationContext.DefaultCollectionTypes.GetConcreteType(typeof(TObject));
if (instanceType == null)
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(typeof(TObject));
}
}
else
{
instanceType = typeof(TObject);
}
/*
* if (!unpacker.IsArrayHeader)
* {
* throw SerializationExceptions.NewIsNotArrayHeader();
* }
* int capacity = ITEMS_COUNT(unpacker);
* TCollection collection = new ...;
* this.UnpackToCore(unpacker, array);
* return collection;
*/
var collection =
this.DeclareLocal(
context,
instanceType,
"collection"
);
var ctor = GetCollectionConstructor(instanceType);
var collectionCapacity = this.EmitGetItemsCountExpression(context, context.Unpacker);
construct =
this.EmitSequentialStatements(
context,
collection.ContextType,
this.EmitCheckIsArrayHeaderExpression(context, context.Unpacker),
collection,
traits.AddMethod == null
? this.EmitSequentialStatements(
context,
typeof(void),
this.EmitStoreVariableStatement(
context,
collection,
this.EmitCreateNewObjectExpression(
context,
collection,
ctor,
ctor.GetParameters().Length == 0
? NoConstructs
: new[] { collectionCapacity }
)
),
this.EmitUnpackToSpecifiedCollection(context, instanceType.GetCollectionTraits(), context.Unpacker, collection)
) : this.EmitUnpackCollectionWithUnpackToExpression(
context,
ctor,
collectionCapacity,
context.Unpacker,
collection
),
this.EmitRetrunStatement(
context,
this.EmitLoadVariableExpression(context, collection)
)
);
}
finally
{
this.EmitMethodEpilogue(context, SerializerMethod.UnpackFromCore, construct);
}
}
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();
}
}
protected ObjectExpressionMessagePackSerializer(SerializationContext context, SerializingMember[] members)
: base((context ?? SerializationContext.Default).CompatibilityOptions.PackerCompatibilityOptions)
{
if (typeof(T).GetIsAbstract() || typeof(T).GetIsInterface())
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(typeof(T));
}
this._createInstance =
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(typeof(T));
var isUnpackable = typeof(IUnpackable).IsAssignableFrom(typeof(T));
var targetParameter = Expression.Parameter(typeof(T), "target");
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
.Zip(Enumerable.Range(0, members.Length), (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)
{
var packerParameter = Expression.Parameter(typeof(Packer), "packer");
var optionsParameter = Expression.Parameter(typeof(PackingOptions), "options");
this._packToMessage =
Expression.Lambda <Action <T, Packer, PackingOptions> >(
Expression.Call(
targetParameter,
typeof(T).GetInterfaceMap(typeof(IPackable)).TargetMethods.Single(),
packerParameter,
optionsParameter
),
targetParameter, packerParameter, optionsParameter
).Compile();
this._memberGetters = null;
}
else
{
this._packToMessage = null;
this._memberGetters =
members.Select(
m =>
m.Member == null
? Expression.Lambda <Func <T, object> >(
Expression.Constant(null),
targetParameter
).Compile()
: CreateMemberGetter(targetParameter, m)
).ToArray();
}
var refTargetParameter = Expression.Parameter(typeof(T).MakeByRefType(), "target");
if (isUnpackable)
{
var unpackerParameter = Expression.Parameter(typeof(Unpacker), "unpacker");
this._unpackFromMessage =
Expression.Lambda <UnpackFromMessageInvocation>(
Expression.Call(
refTargetParameter,
typeof(T).GetInterfaceMap(typeof(IUnpackable)).TargetMethods.Single(),
unpackerParameter
),
refTargetParameter, unpackerParameter
).Compile();
this._memberSetters = null;
}
else
{
this._unpackFromMessage = null;
var valueParameter = Expression.Parameter(typeof(object), "value");
this._memberSetters =
members.Select(
m =>
m.Member == null
? Expression.Lambda <MemberSetter>(
Expression.Empty(),
refTargetParameter,
valueParameter
).Compile()
: m.Member.CanSetValue()
? Expression.Lambda <MemberSetter>(
Expression.Assign(
Expression.PropertyOrField(
refTargetParameter,
m.Member.Name
),
Expression.Call(
Metadata._UnpackHelpers.ConvertWithEnsuringNotNull_1Method.MakeGenericMethod(m.Member.GetMemberValueType()),
valueParameter,
Expression.Constant(m.Member.Name),
Expression.Call( // Using RuntimeTypeHandle to avoid WinRT expression tree issue.
null,
Metadata._Type.GetTypeFromHandle,
Expression.Constant(m.Member.DeclaringType.TypeHandle)
)
)
),
refTargetParameter,
valueParameter
).Compile()
: UnpackHelpers.IsReadOnlyAppendableCollectionMember(m.Member)
? default(MemberSetter)
: ThrowGetOnlyMemberIsInvalid(m.Member)
).ToArray();
}
}
private void BuildMapUnpackFrom(TContext context)
{
this.EmitMethodPrologue(context, SerializerMethod.UnpackFromCore);
TConstruct construct = null;
try
{
Type instanceType;
if (typeof(TObject).GetIsInterface() || typeof(TObject).GetIsAbstract())
{
instanceType = context.SerializationContext.DefaultCollectionTypes.GetConcreteType(typeof(TObject));
if (instanceType == null)
{
throw SerializationExceptions.NewNotSupportedBecauseCannotInstanciateAbstractType(typeof(TObject));
}
}
else
{
instanceType = typeof(TObject);
}
/*
* if (!unpacker.IsMapHeader)
* {
* throw SerializationExceptions.NewIsNotMapHeader();
* }
* int capacity = ITEMS_COUNT(unpacker);
*
* TDictionary<TKey, TValue> dictionary = new ...;
* this.UnpackToCore(unpacker, dictionary);
* return dictionary;
*/
var collection =
this.DeclareLocal(
context,
typeof(TObject),
"collection"
);
construct =
this.EmitSequentialStatements(
context,
typeof(TObject),
this.EmitCheckIsMapHeaderExpression(context, context.Unpacker),
collection,
this.EmitUnpackCollectionWithUnpackToExpression(
context,
GetCollectionConstructor(instanceType),
this.EmitGetItemsCountExpression(context, context.Unpacker),
context.Unpacker,
collection
),
this.EmitRetrunStatement(
context,
this.EmitLoadVariableExpression(context, collection)
)
);
}
finally
{
this.EmitMethodEpilogue(context, SerializerMethod.UnpackFromCore, construct);
}
}
