/// <summary> /// Generates an expression tree to handle class type serialization /// </summary> /// <param name="outputStream">Stream to write to</param> /// <param name="objTracking">Reference tracker</param> /// <param name="item">Source object</param> /// <param name="itemAsObj">Source object as an object</param> /// <param name="typeExpr">Type of the object as an expression</param> /// <param name="serializer">Serializer temporary variable</param> /// <param name="itemType">Type of the element</param> /// <returns>An expression tree to handle class type serialization</returns> internal static Expression GetWriteClassTypeExpression(ParameterExpression outputStream, ParameterExpression objTracking, Expression item, Expression itemAsObj, ParameterExpression typeExpr, ParameterExpression serializer, Type itemType) { var writeType = Expression.IfThenElse(Expression.Equal(Expression.Call(item, ObjectMih.GetTypeMethod()), Expression.Constant(itemType)), Expression.Block(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value0), objTracking), Expression.Assign(typeExpr, Expression.Constant(itemType)), Expression.Assign(itemAsObj, Expression.Convert(item, typeof(object)))), Expression.Block(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value1), objTracking), Expression.Assign(itemAsObj, Expression.Call(SerializerMih.PrepareObjectForSerialization(), item)), Expression.Assign(typeExpr, Expression.Call(itemAsObj, ObjectMih.GetTypeMethod())), GenerateStringExpression(outputStream, Expression.Call(SerializedTypeResolverMih.GetShortNameFromType(), typeExpr), objTracking), PrimitiveHelpers.WriteInt32(outputStream, Expression.Call(SerializedTypeResolverMih.GetHashCodeFromType(), typeExpr), objTracking))); return(Expression.IfThenElse(Expression.Equal(item, Expression.Constant(null)), PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value0), objTracking), Expression.Block(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value1), objTracking), writeType, Expression.Assign(serializer, Expression.Call(SerializerMih.GetTypeToObjectSerializer(), typeExpr)), Expression.Invoke(serializer, outputStream, itemAsObj, objTracking)))); }
/// <summary> /// Generates an expression to handle the 'is that object null' case /// </summary> /// <param name="type">Type of <paramref name="objToSerialize"/></param> /// <param name="outputStream">Stream to write to</param> /// <param name="objToSerialize">Object to serialize</param> /// <param name="objTracking">Reference tracker</param> /// <param name="notTrackedExpressions">Expressions that must be executed if the object is not tracked</param> /// <param name="variables">Global variables for the expression tree</param> /// <returns>An expression to handle the 'is that object null' case</returns> internal static Expression GenerateNullTrackedOrUntrackedExpression(Type type, ParameterExpression outputStream, Expression objToSerialize, ParameterExpression objTracking, List <Expression> notTrackedExpressions, List <ParameterExpression> variables) { var trackedObjectPosition = Expression.Parameter(typeof(int?), "trackedObjectPosition"); var canBeTracked = Expression.Parameter(typeof(bool), "canBeTracked"); variables.Add(trackedObjectPosition); variables.Add(canBeTracked); var alreadyTrackedExpr = Expression.Block(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value0), objTracking), PrimitiveHelpers.WriteInt32(outputStream, Expression.Convert(trackedObjectPosition, typeof(int)), objTracking)); var isNullExpr = PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value0, typeof(byte)), objTracking); var isNotNullExpr = Expression.Block(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value1), objTracking), Expression.IfThenElse(Expression.IsTrue(canBeTracked), Expression.Assign(trackedObjectPosition, Expression.Call(objTracking, SerializerObjectTrackerMih.GetTrackedObjectIndex(), Expression.Convert(objToSerialize, typeof(object)))), Expression.Assign(trackedObjectPosition, Expression.Convert(Expression.Constant(null), typeof(int?)))), Expression.IfThenElse(Expression.NotEqual(trackedObjectPosition, Expression.Constant(null, typeof(int?))), alreadyTrackedExpr, Expression.Block(new[] { PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value1), objTracking) }.Concat(notTrackedExpressions)))); List <Expression> expressions = new List <Expression>(); expressions.Add(Expression.Assign(canBeTracked, Expression.Call(objTracking, SerializerObjectTrackerMih.CanBeTracked(), Expression.Constant(type)))); expressions.Add(Expression.IfThenElse(Expression.AndAlso(Expression.IsTrue(canBeTracked), Expression.Equal(Expression.Convert(objToSerialize, typeof(object)), Expression.Constant(null))), isNullExpr, isNotNullExpr)); return(Expression.Block(variables, expressions)); }
/// <summary> /// Generates an expression tree to handle ExpandoObject serialization /// </summary> /// <param name="type">Type of <paramref name="objToSerialize"/></param> /// <param name="variables">Global variables for the expression tree</param> /// <param name="outputStream">Stream to write to</param> /// <param name="objToSerialize">Object to serialize</param> /// <param name="objTracking">Reference tracker</param> /// <returns>An expression tree to handle ExpandoObject serialization</returns> public static Expression GenerateExpandoObjectExpression(Type type, List <ParameterExpression> variables, ParameterExpression outputStream, ParameterExpression objToSerialize, ParameterExpression objTracking) { var enumerableType = typeof(IEnumerable <KeyValuePair <string, object> >); var getEnumeratorMethodInfo = IEnumerableMih.GetEnumerator <string, object>(); var enumeratorMethod = Expression.Call(Expression.Convert(objToSerialize, enumerableType), getEnumeratorMethodInfo); var loopBodyCargo = new EnumerableLoopBodyCargo(); loopBodyCargo.EnumeratorType = typeof(IEnumerator <KeyValuePair <string, object> >); loopBodyCargo.KvpType = typeof(KeyValuePair <string, object>); var preLoopActions = new List <Expression>(); preLoopActions.Add(PrimitiveHelpers.WriteInt32(outputStream, Expression.Property(Expression.Convert(objToSerialize, typeof(ICollection <KeyValuePair <string, object> >)), CollectionMih.Count <KeyValuePair <string, object> >()), objTracking)); var notTrackedExpressions = new List <Expression>(); notTrackedExpressions.Add(Expression.Call(objTracking, SerializerObjectTrackerMih.TrackObject(), objToSerialize)); notTrackedExpressions.Add(EnumerableLoopHelper.GenerateEnumeratorLoop(variables, EnumerableLoopHelper.GetStringToSomethingWriter(outputStream, objTracking), enumeratorMethod, preLoopActions, loopBodyCargo)); return(Serializer.GenerateNullTrackedOrUntrackedExpression(type, outputStream, objToSerialize, objTracking, notTrackedExpressions, variables)); }
internal static Expression SerializeDictionary(Type type, Type dictionaryType, List <ParameterExpression> variables, ParameterExpression outputStream, ParameterExpression objToSerialize, ParameterExpression objTracking, bool addTracking) { MethodInfo getEnumeratorMethodInfo = type.GetMethod("GetEnumerator"); var enumeratorMethod = Expression.Call(Expression.Convert(objToSerialize, type), getEnumeratorMethodInfo); var loopBodyCargo = new EnumerableLoopBodyCargo(); loopBodyCargo.EnumeratorType = getEnumeratorMethodInfo.ReturnType; loopBodyCargo.KvpType = typeof(KeyValuePair <,>).MakeGenericType(dictionaryType.GetGenericArguments()); var notTrackedExpressions = new List <Expression>(); if (addTracking) { notTrackedExpressions.Add(Expression.Call(objTracking, SerializerObjectTrackerMih.TrackObject(), objToSerialize)); notTrackedExpressions.Add(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value1), objTracking)); } notTrackedExpressions.Add(PrimitiveHelpers.WriteInt32(outputStream, Expression.Property(Expression.Convert(objToSerialize, dictionaryType), "Count"), objTracking)); notTrackedExpressions.Add(EnumerableLoopHelper.GenerateEnumeratorLoop(variables, GetKeyValuePairLoopBodyCargo(outputStream, objTracking, "Key", dictionaryType.GetGenericArguments()[0], "Value", dictionaryType.GetGenericArguments()[1]), enumeratorMethod, null, loopBodyCargo)); return(Expression.Block(notTrackedExpressions)); }
private static IEnumerable <Expression> WriteDimensionalArrayLength(ParameterExpression outputStream, Expression objTracking, Expression i, ParameterExpression arr, ParameterExpression lengths, int rank) { var expressions = new List <Expression>(); expressions.Add(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant((byte)rank), objTracking)); var loopExpressions = new List <Expression>(); expressions.Add(Expression.Assign(i, Expression.Constant(0))); var length = Expression.Call(arr, ArrayMih.GetLength(), i); loopExpressions.Add(Expression.Assign(Expression.ArrayAccess(lengths, i), length)); loopExpressions.Add(PrimitiveHelpers.WriteInt32(outputStream, Expression.ArrayIndex(lengths, i), objTracking)); loopExpressions.Add(Expression.Assign(i, Expression.Add(i, Expression.Constant(1)))); var loopBody = Expression.Block(loopExpressions); var breakLabel = Expression.Label("breakLabel"); var cond = Expression.LessThan(i, Expression.Constant(rank)); var loop = Expression.Loop(Expression.IfThenElse(cond, loopBody, Expression.Break(breakLabel)), breakLabel); expressions.Add(loop); return(expressions); }
private static Expression SerializeISerializable(Type type, List <ParameterExpression> variables, ParameterExpression outputStream, ParameterExpression objToSerialize, ParameterExpression objTracking) { var fc = Expression.Parameter(typeof(FormatterConverter), "fc"); var context = Expression.Parameter(typeof(StreamingContext), "context"); var si = Expression.Parameter(typeof(SerializationInfo), "si"); var iser = Expression.Parameter(typeof(ISerializable), "iser"); variables.Add(fc); variables.Add(context); variables.Add(si); variables.Add(iser); var getEnumeratorMethodInfo = SerializationInfoMih.GetEnumerator(); var enumeratorMethod = Expression.Call(si, getEnumeratorMethodInfo); var loopBodyCargo = new EnumerableLoopBodyCargo(); loopBodyCargo.EnumeratorType = typeof(SerializationInfoEnumerator); loopBodyCargo.KvpType = typeof(SerializationEntry); var preLoopActions = new List <Expression>(); preLoopActions.Add(PrimitiveHelpers.WriteInt32(outputStream, Expression.Property(si, SerializationInfoMih.MemberCount()), objTracking)); var notTrackedExpressions = new List <Expression>(); notTrackedExpressions.Add(PrimitiveHelpers.WriteByte(outputStream, Expression.Constant(SerializerObjectTracker.Value0, typeof(byte)), objTracking)); 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(iser, Expression.Convert(objToSerialize, typeof(ISerializable)))); notTrackedExpressions.AddRange(SerializationCallbacksHelper.GenerateOnSerializingAttributeExpression(type, objToSerialize, context)); notTrackedExpressions.Add(Expression.Call(iser, ISerializableMih.GetObjectData(), si, context)); notTrackedExpressions.AddRange(SerializationCallbacksHelper.GenerateOnSerializedAttributeExpression(type, objToSerialize, context)); notTrackedExpressions.Add(Expression.IfThen(Expression.IsTrue(Expression.Property(si, "IsFullTypeNameSetExplicit")), Expression.Throw(Expression.New(InvalidOperationExceptionMih.Constructor(), Expression.Constant("Changing the full type name for an ISerializable is not supported"))))); notTrackedExpressions.Add(Expression.IfThen(Expression.IsTrue(Expression.Property(si, "IsAssemblyNameSetExplicit")), Expression.Throw(Expression.New(InvalidOperationExceptionMih.Constructor(), Expression.Constant("Changing the assembly name for an ISerializable is not supported"))))); notTrackedExpressions.Add(EnumerableLoopHelper.GenerateEnumeratorLoop(variables, DictionarySerializer.GetKeyValuePairLoopBodyCargo(outputStream, objTracking, "Name", typeof(string), "Value", typeof(object)), enumeratorMethod, preLoopActions, loopBodyCargo)); notTrackedExpressions.Add(Expression.Call(objTracking, SerializerObjectTrackerMih.TrackObject(), objToSerialize)); return(Expression.Block(notTrackedExpressions)); }
private static IEnumerable <Expression> WriteJaggedArray(Type elementType, List <ParameterExpression> variables, ParameterExpression outputStream, ParameterExpression arr, ParameterExpression objTracking) { var item = Expression.Parameter(elementType, "item"); var serializer = Expression.Parameter(typeof(Action <Stream, object, SerializerObjectTracker>), "serializer"); var itemAsObj = Expression.Parameter(typeof(object), "itemAsObj"); var typeExpr = Expression.Parameter(typeof(Type), "typeExpr"); var i = Expression.Parameter(typeof(int), "i"); var length = Expression.Parameter(typeof(int), "length"); variables.Add(typeExpr); variables.Add(itemAsObj); variables.Add(serializer); variables.Add(item); variables.Add(length); variables.Add(i); var expressions = new List <Expression>(); expressions.Add(Expression.Assign(length, Expression.Property(arr, "Length"))); expressions.Add(PrimitiveHelpers.WriteInt32(outputStream, length, objTracking)); expressions.Add(Expression.Assign(i, Expression.Constant(0))); Debug.Assert(!elementType.IsPrimitive && !elementType.IsValueType && elementType != typeof(string), "Type cannot be a primitive"); var loopExpressions = new List <Expression>(); loopExpressions.Add(Expression.Assign(item, Expression.ArrayAccess(arr, i))); // uh? loopExpressions.Add(Expression.Assign(item, Expression.Convert(Expression.Call(arr, ArrayMih.GetValue(), i), elementType))); loopExpressions.Add(Serializer.GetWriteClassTypeExpression(outputStream, objTracking, item, itemAsObj, typeExpr, serializer, elementType)); 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); expressions.Add(loop); return(expressions); }