private static IEnumerable <Expression> ReadJaggedArray(Type type, Type elementType, ParameterExpression newInstance, List <ParameterExpression> variables, ParameterExpression inputStream, ParameterExpression objTracker) { var i = Expression.Parameter(typeof(int), "i"); var length = Expression.Parameter(typeof(int), "length"); var item = Expression.Parameter(type.GetElementType(), "item"); var typeName = Expression.Parameter(typeof(string), "typeName"); var typeExpr = Expression.Parameter(typeof(TypeWithHashCode), "type"); var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode"); var tmpValue = Expression.Parameter(elementType, "tmpValue"); var deserializer = Expression.Parameter(typeof(Func <Stream, DeserializerObjectTracker, object>), "deserializer"); variables.Add(length); variables.Add(item); variables.Add(typeName); variables.Add(typeExpr); variables.Add(typeHashCode); variables.Add(i); variables.Add(tmpValue); variables.Add(deserializer); var expressions = new List <Expression>(); expressions.Add(Expression.Assign(length, PrimitiveHelpers.ReadInt32(inputStream, objTracker))); expressions.Add(Expression.Assign(i, Expression.Constant(0))); expressions.Add(Expression.Assign(newInstance, Expression.Convert(Expression.New(type.GetConstructor(new[] { typeof(int) }), length), type))); if (type.IsClass) { expressions.Add(Expression.Call(objTracker, DeserializerObjectTrackerMih.TrackedObject(), newInstance)); } var loopExpressions = new List <Expression>(); loopExpressions.Add(Deserializer.GetReadClassExpression(inputStream, objTracker, tmpValue, typeExpr, typeName, typeHashCode, deserializer, elementType)); loopExpressions.Add(Expression.Call(newInstance, ArrayMih.SetValue(), Expression.Convert(tmpValue, typeof(object)), i)); 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); }
internal static void GetReadExpression(ParameterExpression inputStream, ParameterExpression objTracking, Type expectedType, List <Expression> loopExpressions, ParameterExpression tmpVariable, ParameterExpression typeExpr, ParameterExpression typeName, ParameterExpression typeHashCode, ParameterExpression deserializer) { if (expectedType == typeof(string)) { loopExpressions.Add(Expression.Assign(tmpVariable, Deserializer.GenerateStringExpression(inputStream, objTracking))); } else if (expectedType.IsPrimitive || expectedType.IsValueType) { var primitiveDeserializer = Deserializer.GetTypeDeserializer(expectedType); loopExpressions.Add(Expression.Assign(tmpVariable, Expression.Convert(Expression.Invoke(Expression.Constant(primitiveDeserializer), inputStream, objTracking), expectedType))); } else { loopExpressions.Add(Deserializer.GetReadClassExpression(inputStream, objTracking, tmpVariable, typeExpr, typeName, typeHashCode, deserializer, expectedType)); } }
/// <summary> /// Generates an expression tree to deserialize an ExpandoObject /// </summary> /// <param name="variables">Global variables for the expression tree</param> /// <param name="inputStream">Stream to read from</param> /// <param name="objTracker">Reference tracker</param> /// <returns>An expression tree to deserialize an ExpandoObject</returns> internal static Expression GenerateExpandoObjectExpression(List <ParameterExpression> variables, ParameterExpression inputStream, ParameterExpression objTracker) { var dictType = typeof(IDictionary <string, object>); 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 newInstance = Expression.Parameter(typeof(ExpandoObject), "newInstance"); var destDict = Expression.Parameter(dictType, "destDict"); var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode"); var trackType = Expression.Parameter(typeof(byte), "trackType"); variables.Add(key); variables.Add(value); variables.Add(length); variables.Add(i); variables.Add(deserializer); variables.Add(typeName); variables.Add(typeExpr); variables.Add(newInstance); variables.Add(destDict); variables.Add(typeHashCode); variables.Add(trackType); var loopExpressions = new List <Expression>(); loopExpressions.Add(Expression.Assign(key, Deserializer.GenerateStringExpression(inputStream, objTracker))); loopExpressions.Add(Deserializer.GetReadClassExpression(inputStream, objTracker, value, typeExpr, typeName, typeHashCode, deserializer, typeof(object))); loopExpressions.Add(Expression.Call(destDict, DictionaryMih.Add <string, object>(), 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(length, PrimitiveHelpers.ReadInt32(inputStream, objTracker))); notTrackedExpressions.Add(Expression.Assign(i, Expression.Constant(0))); notTrackedExpressions.Add(Expression.Assign(newInstance, Expression.New(typeof(ExpandoObject)))); notTrackedExpressions.Add(Expression.Assign(destDict, Expression.Convert(newInstance, dictType))); notTrackedExpressions.Add(Expression.Call(objTracker, DeserializerObjectTrackerMih.TrackedObject(), newInstance)); notTrackedExpressions.Add(loop); return(Deserializer.GenerateNullTrackedOrUntrackedExpression(typeof(ExpandoObject), inputStream, objTracker, newInstance, notTrackedExpressions, trackType, variables)); }
private static IEnumerable <Expression> ReadDimensionalArray(Type type, Type elementType, ParameterExpression newInstance, List <ParameterExpression> variables, ParameterExpression inputStream, ParameterExpression lengths, ParameterExpression objTracker, int rank) { var typeName = Expression.Parameter(typeof(string), "typeName"); var typeExpr = Expression.Parameter(typeof(TypeWithHashCode), "type"); var indices = Expression.Parameter(typeof(int[]), "indices"); var tmpValue = Expression.Parameter(elementType, "tmpValue"); var deserializer = Expression.Parameter(typeof(Func <Stream, DeserializerObjectTracker, object>), "deserializer"); var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode"); variables.Add(deserializer); variables.Add(typeName); variables.Add(typeExpr); variables.Add(tmpValue); variables.Add(typeHashCode); var expressions = new List <Expression>(); expressions.Add(Expression.Assign(newInstance, Expression.Convert(Expression.Call(ArrayMih.CreateInstance(), Expression.Constant(elementType), lengths), type))); if (type.IsClass) { expressions.Add(Expression.Call(objTracker, DeserializerObjectTrackerMih.TrackedObject(), newInstance)); } if (rank > 1) { variables.Add(indices); expressions.Add(Expression.Assign(indices, Expression.Call(CreateArrayMethodInfo.GetCreateArrayMethodInfo(typeof(int)), Expression.Property(lengths, "Length")))); } Expression innerExpression; if (elementType == typeof(string)) { innerExpression = Expression.Assign(tmpValue, Deserializer.GenerateStringExpression(inputStream, objTracker)); } else if (elementType.IsPrimitive || elementType.IsValueType) { var primitiveReader = Deserializer.GetPrimitiveReader(elementType); if (primitiveReader == null) { var primitiveDeserializer = Deserializer.GetTypeDeserializer(elementType); innerExpression = Expression.Assign(tmpValue, Expression.Convert(Expression.Invoke(Expression.Constant(primitiveDeserializer), inputStream, objTracker), elementType)); } else { if (elementType == typeof(byte) || elementType == typeof(sbyte) || elementType == typeof(byte?) || elementType == typeof(sbyte?) || Deserializer.IsEnumOrNullableEnum(elementType)) { innerExpression = Expression.Assign(tmpValue, Expression.Convert(primitiveReader(inputStream, objTracker), elementType)); } else { innerExpression = Expression.Assign(tmpValue, primitiveReader(inputStream, objTracker)); } } } else { innerExpression = Deserializer.GetReadClassExpression(inputStream, objTracker, tmpValue, typeExpr, typeName, typeHashCode, deserializer, elementType); } Func <int, Expression, Expression> readArrayLoop = (loopRank, innerExpr) => { var loopRankIndex = Expression.Parameter(typeof(int), "loopRankIndex" + loopRank); variables.Add(loopRankIndex); var loopExpressions = new List <Expression>(); if (rank == 1) { loopExpressions.Add(innerExpr); loopExpressions.Add(Expression.Assign(Expression.ArrayAccess(newInstance, loopRankIndex), tmpValue)); } else { loopExpressions.Add(Expression.Assign(Expression.ArrayAccess(indices, Expression.Constant(loopRank)), loopRankIndex)); loopExpressions.Add(innerExpr); loopExpressions.Add(Expression.Call(newInstance, ArrayMih.SetValueRank(), Expression.Convert(tmpValue, typeof(object)), indices)); } loopExpressions.Add(Expression.Assign(loopRankIndex, Expression.Add(loopRankIndex, Expression.Constant(1)))); var cond = Expression.LessThan(loopRankIndex, Expression.ArrayIndex(lengths, Expression.Constant(loopRank))); var loopBody = Expression.Block(loopExpressions); var breakLabel = Expression.Label("breakLabel" + loopRank); var loop = Expression.Loop(Expression.IfThenElse(cond, loopBody, Expression.Break(breakLabel)), breakLabel); return(Expression.Block(Expression.Assign(loopRankIndex, Expression.Constant(0)), loop)); }; for (int r = rank - 1; r >= 0; r--) { innerExpression = readArrayLoop(r, innerExpression); } expressions.Add(innerExpression); return(expressions); }
public static Expression GenerateDictionaryGenericExpression(Type type, List <ParameterExpression> variables, ParameterExpression inputStream, ParameterExpression objTracker) { var ctor = type.GetConstructor(new Type[0]); if (ctor == null) { throw new MissingConstructorException("Type " + type + " must have a public constructor without parameter."); } var notTrackedExpressions = new List <Expression>(); var newInstance = Expression.Parameter(type, "newInstanceDict"); var comparerType = Expression.Parameter(typeof(byte), "comparerType"); var typeExpr = Expression.Parameter(typeof(TypeWithHashCode), "typeExpr"); var typeName = Expression.Parameter(typeof(string), "typeName"); var typeHashCode = Expression.Parameter(typeof(int), "typeHashCode"); var deserializer = Expression.Parameter(typeof(Func <Stream, DeserializerObjectTracker, object>), "deserializer"); variables.Add(deserializer); variables.Add(typeExpr); variables.Add(typeName); variables.Add(typeHashCode); variables.Add(newInstance); variables.Add(comparerType); var genericDictionaryType = DictionaryHelper.GetDictionaryType(type); var comparerConstructor = DictionaryHelper.GetComparerConstructor(type); var deserializeDictionaryWithDefaultComparer = DeserializeDictionary(type, genericDictionaryType, variables, newInstance, inputStream, objTracker, deserializer, typeExpr, typeName, typeHashCode, (exprs, newIns) => exprs.Add(Expression.Assign(newIns, Expression.New(type.GetConstructor(new Type[0]))))); if (comparerConstructor == null) { notTrackedExpressions.Add(PrimitiveHelpers.ReadByte(inputStream, objTracker)); notTrackedExpressions.Add(deserializeDictionaryWithDefaultComparer); } else { notTrackedExpressions.Add(Expression.IfThenElse(Expression.Equal(PrimitiveHelpers.ReadByte(inputStream, objTracker), Expression.Constant(0, typeof(int))), deserializeDictionaryWithDefaultComparer, DeserializeDictionary(type, genericDictionaryType, variables, newInstance, inputStream, objTracker, deserializer, typeExpr, typeName, typeHashCode, (exprs, newIns) => { var eqType = typeof(IEqualityComparer <>).MakeGenericType(genericDictionaryType.GetGenericArguments()[0]); var comparer = Expression.Parameter(eqType, "comparer"); variables.Add(comparer); exprs.Add(Deserializer.GetReadClassExpression(inputStream, objTracker, comparer, typeExpr, typeName, typeHashCode, deserializer, eqType)); exprs.Add(Expression.Assign(newIns, Expression.New(comparerConstructor, comparer))); }))); } return(Deserializer.GenerateNullTrackedOrUntrackedExpression(type, inputStream, objTracker, newInstance, notTrackedExpressions, comparerType, variables)); }