private ILDelegateBuilder <Deserializer> EmitDeserializer(Type type, List <FieldInfo> fields,
SerializationCallbacks callbacks)
{
var il = new ILDelegateBuilder <Deserializer>(
FieldBuilder,
type.Name + "Deserializer",
SerializationMethodInfos.DeserializerDelegate);
var streamingContext = default(ILDelegateBuilder <Deserializer> .Local);
if (callbacks.OnDeserializing != null || callbacks.OnDeserialized != null)
{
streamingContext = il.DeclareLocal(typeof(StreamingContext));
il.LoadLocalAddress(streamingContext);
il.LoadConstant((int)StreamingContextStates.All);
il.LoadArgument(1);
il.Call(typeof(StreamingContext).GetConstructor(new[]
{ typeof(StreamingContextStates), typeof(object) }));
}
// Declare local variables.
var result = il.DeclareLocal(type);
// Construct the result.
il.CreateInstance(type, result, SerializationMethodInfos.GetUninitializedObject);
// Record the object.
il.LoadArgument(1); // Load the 'context' parameter.
il.LoadLocal(result);
il.BoxIfValueType(type);
il.Call(SerializationMethodInfos.RecordObjectWhileDeserializing);
if (callbacks.OnDeserializing != null)
{
il.LoadLocalAsReference(type, result);
il.LoadLocal(streamingContext);
il.Call(callbacks.OnDeserializing);
}
// Deserialize each field.
foreach (var field in fields)
{
// Deserialize the field.
var fieldType = field.FieldType;
if (fieldType.IsEnum)
{
var typeHandle = fieldType.GetEnumUnderlyingType().TypeHandle;
il.LoadLocalAsReference(type, result);
il.LoadArgument(1);
il.Call(SerializationMethodInfos.GetStreamFromDeserializationContext);
il.Call(DirectSerializers[typeHandle].ReadMethod);
il.StoreField(field);
}
else if (DirectSerializers.TryGetValue(field.FieldType.TypeHandle, out var serializer))
{
il.LoadLocalAsReference(type, result);
il.LoadArgument(1);
il.Call(SerializationMethodInfos.GetStreamFromDeserializationContext);
il.Call(serializer.ReadMethod);
il.StoreField(field);
}
else
{
var deserializeMethod = SerializationMethodInfos.DeserializeInner;
il.LoadLocalAsReference(type, result);
il.LoadType(field.FieldType);
il.LoadArgument(1);
il.Call(deserializeMethod);
// Store the value on the result.
il.CastOrUnbox(field.FieldType);
il.StoreField(field);
}
}
if (callbacks.OnDeserialized != null)
{
il.LoadLocalAsReference(type, result);
il.LoadLocal(streamingContext);
il.Call(callbacks.OnDeserialized);
}
// If the type implements the IOnDeserialized lifecycle handler, call that method now.
if (typeof(IOnDeserialized).IsAssignableFrom(type))
{
il.LoadLocalAsReference(type, result);
il.LoadArgument(1);
var concreteMethod = GetConcreteMethod(
type,
TypeUtils.Method((IOnDeserialized i) => i.OnDeserialized(default(ISerializerContext))));
il.Call(concreteMethod);
}
// If the type implements the IDeserializationCallback lifecycle handler, call that method now.
if (typeof(IDeserializationCallback).IsAssignableFrom(type))
{
il.LoadLocalAsReference(type, result);
il.LoadArgument(1);
var concreteMethod = GetConcreteMethod(
type,
TypeUtils.Method((IDeserializationCallback i) => i.OnDeserialization(default(object))));
il.Call(concreteMethod);
}
il.LoadLocal(result);
il.BoxIfValueType(type);
il.Return();
return(il);
}
private ILDelegateBuilder <Serializer> EmitSerializer(Type type, List <FieldInfo> fields,
SerializationCallbacks callbacks)
{
var il = new ILDelegateBuilder <Serializer>(
FieldBuilder,
type.Name + "Serializer",
SerializationMethodInfos.SerializerDelegate);
// Declare local variables.
var typedInput = il.DeclareLocal(type);
var streamingContext = default(ILDelegateBuilder <Serializer> .Local);
if (callbacks.OnSerializing != null || callbacks.OnSerialized != null)
{
streamingContext = il.DeclareLocal(typeof(StreamingContext));
il.LoadLocalAddress(streamingContext);
il.LoadConstant((int)StreamingContextStates.All);
il.LoadArgument(1);
il.Call(typeof(StreamingContext).GetConstructor(new[] { typeof(StreamingContextStates), typeof(object) }));
}
// Set the typed input variable from the method parameter.
il.LoadArgument(0);
il.CastOrUnbox(type);
il.StoreLocal(typedInput);
if (callbacks.OnSerializing != null)
{
il.LoadLocalAsReference(type, typedInput);
il.LoadLocal(streamingContext);
il.Call(callbacks.OnSerializing);
}
// Serialize each field
foreach (var field in fields)
{
var fieldType = field.FieldType;
var typeHandle = field.FieldType.TypeHandle;
if (fieldType.IsEnum)
{
typeHandle = fieldType.GetEnumUnderlyingType().TypeHandle;
}
if (DirectSerializers.TryGetValue(typeHandle, out var serializer))
{
il.LoadArgument(1);
il.Call(SerializationMethodInfos.GetStreamFromSerializationContext);
il.LoadLocal(typedInput);
il.LoadField(field);
il.Call(serializer.WriteMethod);
}
else
{
var serializeMethod = SerializationMethodInfos.SerializeInner;
// Load the field.
il.LoadLocal(typedInput);
il.LoadField(field);
il.BoxIfValueType(field.FieldType);
// Serialize the field.
il.LoadArgument(1);
il.LoadType(field.FieldType);
il.Call(serializeMethod);
}
}
if (callbacks.OnSerialized != null)
{
il.LoadLocalAsReference(type, typedInput);
il.LoadLocal(streamingContext);
il.Call(callbacks.OnSerialized);
}
il.Return();
return(il);
}