private static Expression GenerateClassExpression(Type type,
ParameterExpression inputStream,
ParameterExpression objTracker)
{
List <ParameterExpression> variables = new List <ParameterExpression>();
var trackType = Expression.Parameter(typeof(byte), "isAlreadyTracked");
var newInstance = Expression.Parameter(type, "newInstance");
var deserializer = Expression.Parameter(typeof(Func <Stream, DeserializerObjectTracker, object>), "deserializer");
var typeExpr = Expression.Parameter(typeof(TypeWithHashCode), "typeExpr");
var typeName = Expression.Parameter(typeof(string), "typeName");
var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode");
variables.Add(trackType);
variables.Add(newInstance);
variables.Add(deserializer);
variables.Add(typeExpr);
variables.Add(typeName);
variables.Add(typeHashCode);
var temporaryVariables = new Dictionary <Type, ParameterExpression>();
List <Expression> notTrackedExpressions = new List <Expression>();
notTrackedExpressions.Add(Expression.Assign(newInstance, Expression.Convert(Expression.Call(FormatterServicesMih.GetUninitializedObject(), Expression.Constant(type)), type)));
notTrackedExpressions.AddRange(SerializationCallbacksHelper.GenerateOnDeserializingAttributeExpression(type, newInstance, Expression.New(StreamingContextMih.Constructor(), Expression.Constant(StreamingContextStates.All))));
if (type.IsClass)
{
notTrackedExpressions.Add(Expression.Call(objTracker, DeserializerObjectTrackerMih.TrackedObject(), newInstance));
}
GenerateReadFieldsExpression(type,
InternalSerializationStuff.GetFields(type),
inputStream,
objTracker,
temporaryVariables,
variables,
newInstance,
notTrackedExpressions,
typeExpr,
typeName,
typeHashCode,
deserializer);
notTrackedExpressions.AddRange(SerializationCallbacksHelper.GenerateOnDeserializedAttributeExpression(type, newInstance, Expression.New(StreamingContextMih.Constructor(), Expression.Constant(StreamingContextStates.All))));
notTrackedExpressions.Add(SerializationCallbacksHelper.GenerateCallIDeserializationExpression(type, newInstance));
return(Deserializer.GenerateNullTrackedOrUntrackedExpression(type,
inputStream,
objTracker,
newInstance,
notTrackedExpressions,
trackType,
variables));
}
private static Expression DeserializeISerializable(Type type,
List <ParameterExpression> variables,
ParameterExpression inputStream,
ParameterExpression objTracker,
ParameterExpression newInstance)
{
var length = Expression.Parameter(typeof(int), "length");
var i = Expression.Parameter(typeof(int), "i");
var key = Expression.Parameter(typeof(string), "key");
var value = Expression.Parameter(typeof(object), "value");
var typeName = Expression.Parameter(typeof(string), "typeName");
var typeExpr = Expression.Parameter(typeof(TypeWithHashCode), "type");
var deserializer = Expression.Parameter(typeof(Func <Stream, DeserializerObjectTracker, object>), "deserializer");
var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode");
var fc = Expression.Parameter(typeof(FormatterConverter), "fc");
var context = Expression.Parameter(typeof(StreamingContext), "context");
var si = Expression.Parameter(typeof(SerializationInfo), "si");
variables.Add(fc);
variables.Add(context);
variables.Add(si);
variables.Add(key);
variables.Add(value);
variables.Add(length);
variables.Add(i);
variables.Add(deserializer);
variables.Add(typeName);
variables.Add(typeExpr);
variables.Add(typeHashCode);
var loopExpressions = new List <Expression>();
DictionaryDeserializer.GetReadExpression(inputStream, objTracker, typeof(string), loopExpressions, key, typeExpr, typeName, typeHashCode, deserializer);
DictionaryDeserializer.GetReadExpression(inputStream, objTracker, typeof(object), loopExpressions, value, typeExpr, typeName, typeHashCode, deserializer);
loopExpressions.Add(Expression.Call(si, SerializationInfoMih.AddValue(), key, value));
loopExpressions.Add(Expression.Assign(i, Expression.Add(i, Expression.Constant(1))));
var cond = Expression.LessThan(i, length);
var loopBody = Expression.Block(loopExpressions);
var breakLabel = Expression.Label("breakLabel");
var loop = Expression.Loop(Expression.IfThenElse(cond,
loopBody,
Expression.Break(breakLabel)),
breakLabel);
var notTrackedExpressions = new List <Expression>();
notTrackedExpressions.Add(Expression.Assign(fc, Expression.New(typeof(FormatterConverter))));
notTrackedExpressions.Add(Expression.Assign(context, Expression.New(StreamingContextMih.Constructor(), Expression.Constant(StreamingContextStates.All))));
notTrackedExpressions.Add(Expression.Assign(si, Expression.New(SerializationInfoMih.Constructor(), Expression.Constant(type), fc)));
notTrackedExpressions.Add(Expression.Assign(length, PrimitiveHelpers.ReadInt32(inputStream, objTracker)));
notTrackedExpressions.Add(Expression.Assign(i, Expression.Constant(0)));
notTrackedExpressions.Add(loop);
notTrackedExpressions.Add(Expression.Assign(newInstance, Expression.New(ISerializableSerializer.GetSerializationConstructor(type), si, context)));
if (type.IsClass)
{
notTrackedExpressions.Add(Expression.Call(objTracker, DeserializerObjectTrackerMih.TrackedObject(), newInstance));
}
notTrackedExpressions.AddRange(SerializationCallbacksHelper.GenerateOnDeserializedAttributeExpression(type, newInstance, context));
notTrackedExpressions.Add(SerializationCallbacksHelper.GenerateCallIDeserializationExpression(type, newInstance));
notTrackedExpressions.Add(newInstance);
return(Expression.Block(notTrackedExpressions));
}
/// <summary>
/// Generates an expression tree to clone an ISerializable
/// </summary>
/// <param name="variables">Global variables for the expression tree</param>
/// <param name="source">Source object</param>
/// <param name="clone">Clone object</param>
/// <param name="sourceType">Type of the source object</param>
/// <param name="refTrackerParam">Reference tracker</param>
/// <returns>An expression tree to clone an ISerializable</returns>
public static Expression GenerateISerializableExpression(List <ParameterExpression> variables,
ParameterExpression source,
ParameterExpression clone,
Type sourceType,
ParameterExpression refTrackerParam)
{
var serializationConstructor = ISerializableSerializer.GetSerializationConstructor(sourceType);
if (serializationConstructor == null)
{
throw new MissingConstructorException("Cannot serialize type " + sourceType + " because it does not have the required constructor for ISerializable. If you inherits from a class that implements ISerializable you have to expose the serialization constructor.");
}
var getEnumeratorMethodInfo = SerializationInfoMih.GetEnumerator();
var siSource = Expression.Parameter(typeof(SerializationInfo), "siSource");
var fc = Expression.Parameter(typeof(FormatterConverter), "fc");
var context = Expression.Parameter(typeof(StreamingContext), "context");
var iserSource = Expression.Parameter(typeof(ISerializable), "iserSource");
var siClone = Expression.Parameter(typeof(SerializationInfo), "siClone");
var cloner = Expression.Parameter(typeof(Func <object, ObjectClonerReferenceTracker, object>), "cloner");
var clonedItem = Expression.Parameter(typeof(object), "clonedItem");
variables.Add(fc);
variables.Add(context);
variables.Add(siSource);
variables.Add(iserSource);
variables.Add(siClone);
variables.Add(cloner);
variables.Add(clonedItem);
var enumeratorMethod = Expression.Call(siSource,
getEnumeratorMethodInfo);
var loopBodyCargo = new EnumerableLoopBodyCargo();
loopBodyCargo.EnumeratorType = typeof(SerializationInfoEnumerator);
loopBodyCargo.KvpType = typeof(SerializationEntry);
var expressions = new List <Expression>();
expressions.Add(Expression.Assign(fc, Expression.New(typeof(FormatterConverter))));
expressions.Add(Expression.Assign(context, Expression.New(StreamingContextMih.Constructor(), Expression.Constant(StreamingContextStates.All))));
expressions.Add(Expression.Assign(siSource, Expression.New(SerializationInfoMih.Constructor(), Expression.Constant(sourceType), fc)));
expressions.Add(Expression.Assign(iserSource, Expression.Convert(source, typeof(ISerializable))));
expressions.Add(Expression.Assign(siClone, Expression.New(SerializationInfoMih.Constructor(), Expression.Constant(sourceType), fc)));
expressions.AddRange(SerializationCallbacksHelper.GenerateOnSerializingAttributeExpression(sourceType, source, context));
expressions.Add(Expression.Call(iserSource, ISerializableMih.GetObjectData(), siSource, context));
expressions.AddRange(SerializationCallbacksHelper.GenerateOnSerializedAttributeExpression(sourceType, source, context));
expressions.Add(Expression.IfThen(Expression.IsTrue(Expression.Property(siSource, "IsFullTypeNameSetExplicit")),
Expression.Throw(Expression.New(InvalidOperationExceptionMih.Constructor(),
Expression.Constant("Changing the full type name for an ISerializable is not supported")))));
expressions.Add(Expression.IfThen(Expression.IsTrue(Expression.Property(siSource, "IsAssemblyNameSetExplicit")),
Expression.Throw(Expression.New(InvalidOperationExceptionMih.Constructor(),
Expression.Constant("Changing the assembly name for an ISerializable is not supported")))));
expressions.Add(EnumerableLoopHelper.GenerateEnumeratorLoop(variables,
GetLoopBodyCargo(siClone, clonedItem, refTrackerParam),
enumeratorMethod,
null,
loopBodyCargo));
expressions.Add(Expression.Assign(clone, Expression.New(serializationConstructor, siClone, context)));
expressions.Add(Expression.Call(refTrackerParam, ObjectClonerReferenceTrackerMih.Track(), source, clone));
expressions.AddRange(SerializationCallbacksHelper.GenerateOnDeserializedAttributeExpression(sourceType, clone, context));
expressions.Add(SerializationCallbacksHelper.GenerateCallIDeserializationExpression(sourceType, clone));
return(ObjectCloner.GenerateNullTrackedOrUntrackedExpression(source,
clone,
sourceType,
refTrackerParam,
Expression.Block(expressions)));
}