private static DeserializationFunc <T> CreateObjectDeserializationFunc <T>(ObjectInfo objectInfo)
{
var deserialzationFunc = new DynamicMethod(string.Empty, typeof(T), new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int).MakeByRefType(), typeof(int), typeof(int) }, true);
var il = deserialzationFunc.GetILGenerator();
var size = il.DeclareLocal(typeof(int));
var start = il.DeclareLocal(typeof(int));
var result = il.DeclareLocal(typeof(T));
{
var recursionLimitNotReached = il.DefineLabel();
il.EmitLoadArgument(4);
il.EmitLoadDeclaredConstant(0);
il.Emit(OpCodes.Bgt_S, recursionLimitNotReached);
il.Emit(OpCodes.Ldstr, "Failed to deserialize the object, because the recursion limit was reached.");
il.Emit(OpCodes.Newobj, typeof(SerializationException).GetConstructor(new[] { typeof(string) }));
il.Emit(OpCodes.Throw);
il.MarkLabel(recursionLimitNotReached);
il.EmitLoadArgument(4);
il.EmitLoadDeclaredConstant(1);
il.Emit(OpCodes.Sub);
il.EmitStoreArgument(4);
}
if (typeof(T).IsClass)
{
var valueNotNull = il.DefineLabel();
il.EmitLoadArgument(0);
il.EmitLoadArgument(1);
il.EmitLoadArgument(2);
il.EmitLoadLocalAddress(size.LocalIndex);
il.Emit(OpCodes.Call, typeof(Binary).GetMethod(nameof(Binary.InternalReadBoolean), BindingFlagsEx.Static));
il.Emit(OpCodes.Brtrue_S, valueNotNull);
il.EmitLoadArgument(3);
il.EmitLoadLocal(size.LocalIndex);
il.Emit(OpCodes.Stind_I4);
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Ret);
il.MarkLabel(valueNotNull);
IncrementOffset(il, 1, size);
DecrementCount(il, 2, size);
}
il.EmitLoadArgument(1);
il.EmitStoreLocal(start.LocalIndex);
if (objectInfo.Constructor == null)
{
Debug.Assert(typeof(T).IsValueType);
il.EmitLoadLocalAddress(result.LocalIndex);
il.Emit(OpCodes.Initobj, typeof(T));
}
else
{
if (typeof(T).IsValueType)
{
il.EmitLoadLocalAddress(result.LocalIndex);
}
foreach (var field in objectInfo.ConstructorFields)
{
DeserializeField(il, field, size);
IncrementOffset(il, 1, size);
DecrementCount(il, 2, size);
}
if (typeof(T).IsClass)
{
il.Emit(OpCodes.Newobj, objectInfo.Constructor);
il.EmitStoreLocal(result.LocalIndex);
}
else
{
Debug.Assert(typeof(T).IsValueType);
il.Emit(OpCodes.Call, objectInfo.Constructor);
}
}
foreach (var field in objectInfo.Fields)
{
il.EmitLoadLocal(result.LocalIndex);
DeserializeField(il, field, size);
il.Emit(OpCodes.Stfld, field);
IncrementOffset(il, 1, size);
DecrementCount(il, 2, size);
}
il.EmitLoadArgument(3);
il.EmitLoadArgument(1);
il.EmitLoadLocal(start.LocalIndex);
il.Emit(OpCodes.Sub);
il.Emit(OpCodes.Stind_I4);
il.EmitLoadLocal(result.LocalIndex);
il.Emit(OpCodes.Ret);
return((DeserializationFunc <T>)deserialzationFunc.CreateDelegate(typeof(DeserializationFunc <T>)));
}
private static GetSizeFunc <T> CreateObjectGetSizeFunc <T>(ObjectInfo objectInfo)
{
var getSizeFunc = new DynamicMethod(string.Empty, typeof(int), new[] { typeof(T), typeof(int), typeof(int) }, true);
var il = getSizeFunc.GetILGenerator();
var totalSize = il.DeclareLocal(typeof(int));
{
var recursionLimitNotReached = il.DefineLabel();
il.EmitLoadArgument(2);
il.EmitLoadDeclaredConstant(0);
il.Emit(OpCodes.Bgt_S, recursionLimitNotReached);
il.Emit(OpCodes.Ldstr, "Failed to get the size of the object, because the recursion limit was reached.");
il.Emit(OpCodes.Ldstr, "value");
il.Emit(OpCodes.Newobj, typeof(ArgumentException).GetConstructor(new[] { typeof(string), typeof(string) }));
il.Emit(OpCodes.Throw);
il.MarkLabel(recursionLimitNotReached);
il.EmitLoadArgument(2);
il.EmitLoadDeclaredConstant(1);
il.Emit(OpCodes.Sub);
il.EmitStoreArgument(2);
}
if (typeof(T).IsClass)
{
var valueNotNull = il.DefineLabel();
il.EmitLoadArgument(0);
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Cgt_Un);
il.Emit(OpCodes.Call, typeof(Binary).GetMethod(nameof(Binary.InternalGetBooleanSize), BindingFlagsEx.Static));
il.EmitStoreLocal(totalSize.LocalIndex);
il.EmitLoadArgument(0);
il.Emit(OpCodes.Brtrue_S, valueNotNull);
il.EmitLoadLocal(totalSize.LocalIndex);
il.Emit(OpCodes.Ret);
il.MarkLabel(valueNotNull);
}
else
{
il.EmitLoadDeclaredConstant(0);
il.EmitStoreLocal(totalSize.LocalIndex);
}
foreach (var field in objectInfo.ConstructorFields.Concat(objectInfo.Fields))
{
il.EmitLoadLocal(totalSize.LocalIndex);
GetFieldSize <T>(il, field);
il.Emit(OpCodes.Add);
il.EmitStoreLocal(totalSize.LocalIndex);
}
il.EmitLoadLocal(totalSize.LocalIndex);
il.Emit(OpCodes.Ret);
return((GetSizeFunc <T>)getSizeFunc.CreateDelegate(typeof(GetSizeFunc <T>)));
}
private static SerializationFunc <T> CreateObjectSerializationFunc <T>(ObjectInfo objectInfo)
{
var serialzationFunc = new DynamicMethod(string.Empty, typeof(int), new[] { typeof(T), typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }, true);
var il = serialzationFunc.GetILGenerator();
var size = il.DeclareLocal(typeof(int));
var start = il.DeclareLocal(typeof(int));
{
var recursionLimitNotReached = il.DefineLabel();
il.EmitLoadArgument(5);
il.EmitLoadDeclaredConstant(0);
il.Emit(OpCodes.Bgt_S, recursionLimitNotReached);
il.Emit(OpCodes.Ldstr, "Failed to serialize the object, because the recursion limit was reached.");
il.Emit(OpCodes.Ldstr, "value");
il.Emit(OpCodes.Newobj, typeof(ArgumentException).GetConstructor(new[] { typeof(string), typeof(string) }));
il.Emit(OpCodes.Throw);
il.MarkLabel(recursionLimitNotReached);
il.EmitLoadArgument(5);
il.EmitLoadDeclaredConstant(1);
il.Emit(OpCodes.Sub);
il.EmitStoreArgument(5);
}
if (typeof(T).IsClass)
{
var valueNotNull = il.DefineLabel();
il.EmitLoadArgument(0);
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Cgt_Un);
il.EmitLoadArgument(1);
il.EmitLoadArgument(2);
il.EmitLoadArgument(3);
il.Emit(OpCodes.Call, typeof(Binary).GetMethod(nameof(Binary.InternalWriteBoolean), BindingFlagsEx.Static));
il.EmitStoreLocal(size.LocalIndex);
il.EmitLoadArgument(0);
il.Emit(OpCodes.Brtrue_S, valueNotNull);
il.EmitLoadLocal(size.LocalIndex);
il.Emit(OpCodes.Ret);
il.MarkLabel(valueNotNull);
}
il.EmitLoadArgument(2);
il.EmitStoreLocal(start.LocalIndex);
if (typeof(T).IsClass)
{
IncrementOffset(il, 2, size);
DecrementCount(il, 3, size);
}
foreach (var field in objectInfo.ConstructorFields.Concat(objectInfo.Fields))
{
SerializeField <T>(il, field);
il.EmitStoreLocal(size.LocalIndex);
IncrementOffset(il, 2, size);
DecrementCount(il, 3, size);
}
il.EmitLoadArgument(2);
il.EmitLoadLocal(start.LocalIndex);
il.Emit(OpCodes.Sub);
il.Emit(OpCodes.Ret);
return((SerializationFunc <T>)serialzationFunc.CreateDelegate(typeof(SerializationFunc <T>)));
}