/// <summary>
/// Gets the marshaler methods for a marshaler which has to be instantiated be used (the collection marshalers)
/// </summary>
private bool GetInstancedMarshalerMethods(ManagedUnrealPropertyInfo propertyInfo, ManagedUnrealMarshalerType marshalerType,
out System.Reflection.ConstructorInfo ctor,
out System.Reflection.MethodInfo fromNativeMethod,
out System.Reflection.MethodInfo toNativeMethod)
{
Type collectionMarshalerType = ManagedUnrealTypeInfo.GetMarshalerType(marshalerType, propertyInfo);
// Find the constructor for the marshaler
ctor = null;
foreach (System.Reflection.ConstructorInfo ctorInfo in collectionMarshalerType.GetConstructors())
{
System.Reflection.ParameterInfo[] ctorParams = ctorInfo.GetParameters();
if (ctorParams.Length > 2 && ctorParams[0].ParameterType == typeof(int) && ctorParams[1].ParameterType == typeof(UFieldAddress))
{
ctor = ctorInfo;
break;
}
}
fromNativeMethod = GetInstancedMarshalerMethod(collectionMarshalerType, true);
toNativeMethod = GetInstancedMarshalerMethod(collectionMarshalerType, false);
bool success = ctor != null && fromNativeMethod != null && toNativeMethod != null;
if (!success)
{
throw new RewriteException(propertyInfo.Path, "Failed to get marshaler methods");
}
return(success);
}
private void WriteNativeFunctionInvoker(TypeDefinition type, ManagedUnrealTypeInfo typeInfo, ManagedUnrealFunctionInfo functionInfo,
MethodDefinition method, InjectedMembers injectedMembers, bool perInstanceFunctionAddress)
{
method.Body = new MethodBody(method);
WriteNativeFunctionInvokerBody(type, typeInfo, functionInfo, method, injectedMembers, GetParamsFromMethod(type, functionInfo, method),
method.Body.GetILProcessor(), false, perInstanceFunctionAddress);
}
private VariableDefinition EmitCreateMarshaler(ILProcessor processor, Instruction loadBuffer, FieldDefinition offsetField, FieldDefinition nativePropertyField, ManagedUnrealPropertyInfo propertyInfo)
{
VariableDefinition marshalerVar = null;
if (ManagedUnrealTypeInfo.PropertyRequiresMarshalerInstance(propertyInfo))
{
TypeReference marshalerType = assembly.MainModule.ImportEx(ManagedUnrealTypeInfo.GetMarshalerType(ManagedUnrealMarshalerType.Copy, propertyInfo));
marshalerVar = new VariableDefinition(marshalerType);
}
if (marshalerVar != null)
{
processor.Emit(OpCodes.Ldc_I4_1);
processor.Emit(OpCodes.Ldsfld, nativePropertyField);
// New delegate marshaling code, this will use a cached delegate
EmitCachedMarshalingDelegates(processor, propertyInfo, ManagedUnrealMarshalerType.Copy);
System.Reflection.ConstructorInfo ctor;
System.Reflection.MethodInfo fromNativeMethod;
System.Reflection.MethodInfo toNativeMethod;
GetInstancedMarshalerMethods(propertyInfo, ManagedUnrealMarshalerType.Copy, out ctor, out fromNativeMethod, out toNativeMethod);
processor.Emit(OpCodes.Newobj, assembly.MainModule.ImportEx(ctor));
processor.Emit(OpCodes.Stloc, marshalerVar);
}
return(marshalerVar);
}
private Instruction[] CreateFunctionOutDefaults(ILProcessor processor, ManagedUnrealFunctionInfo functionInfo, MethodDefinition method)
{
List <Instruction> instructions = new List <Instruction>();
// Set out params to the equivalent of default(XXXX)
for (int i = 0; i < functionInfo.Params.Count; ++i)
{
ManagedUnrealPropertyInfo param = functionInfo.Params[i];
if (param.IsOut)
{
instructions.AddRange(CreateSetDefaultValue(processor, param.Type.TypeCode, method.Parameters[i]));
}
}
// Add a return var and set it to the equivalent of default(XXXX)
if (functionInfo.ReturnProp != null)
{
TypeReference returnType = assembly.MainModule.ImportEx(ManagedUnrealTypeInfo.GetTypeFromPropertyInfo(functionInfo.ReturnProp));
VariableDefinition returnVar = new VariableDefinition(returnType);
method.Body.Variables.Add(returnVar);
instructions.AddRange(CreateSetDefaultValue(processor, functionInfo.ReturnProp.Type.TypeCode, returnVar));
instructions.Add(processor.Create(OpCodes.Ldloc, returnVar));
}
return(instructions.ToArray());
}
private void RewriteInterface(TypeDefinition type, ManagedUnrealTypeInfo interfaceInfo)
{
InjectedMembers injectedMembers = new InjectedMembers(interfaceInfo);
Dictionary <string, List <MethodDefinition> > methodsByName = new Dictionary <string, List <MethodDefinition> >();
foreach (MethodDefinition method in type.Methods)
{
List <MethodDefinition> methods;
if (!methodsByName.TryGetValue(method.Name, out methods))
{
methodsByName.Add(method.Name, methods = new List <MethodDefinition>());
}
methods.Add(method);
}
foreach (ManagedUnrealFunctionInfo functionInfo in interfaceInfo.Functions)
{
List <MethodDefinition> methods;
methodsByName.TryGetValue(functionInfo.Name, out methods);
VerifySingleResult(methods, type, "Function " + functionInfo.Name + " (the reflection system doesn't support overloads");
AddPathAttribute(methods[0], functionInfo);
}
TypeDefinition interfaceImplType = CreateDefaultInterfaceImpl(type, interfaceInfo, methodsByName);
AddPathAttribute(type, interfaceInfo, interfaceImplType);
}
private void EmitLoad(ILProcessor processor, Instruction loadBuffer, FieldDefinition offsetField, FieldDefinition nativePropertyField,
ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, VariableDefinition marshalerVar, ParameterDefinition param)
{
// This is moving the native buffer into the parameter
// If the param is "out" or "ref" load the arg and store it afterwards
// NOTE: Is this a redundant check? Why would we be loading the native buffer into a param if it isn't ref / out?
// - Collections were treated as a special case. Look into if it is still required. If not; remove this ref/out check
// (or just change it to an assert) and only take the ref/out path.
bool outOrRef = propertyInfo.IsByRef || propertyInfo.IsOut;
if (outOrRef)
{
System.Diagnostics.Debug.Assert(param.IsOut || param.ParameterType.IsByReference);
processor.Emit(OpCodes.Ldarg, param);
}
EmitLoad(processor, loadBuffer, offsetField, nativePropertyField, typeInfo, propertyInfo, marshalerVar);
if (outOrRef)
{
processor.Append(CreateStRefOutParam(processor, param, propertyInfo.Type.TypeCode));
}
else
{
// Is this useful for anything? Old code used it when not handling ref/out properly.
processor.Emit(OpCodes.Starg, param);
}
}
private void EndSetter(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition setter,
FieldDefinition isValidField, ILProcessor processor)
{
processor.Emit(OpCodes.Ret);
InsertPropertyIsValidSafeguard(propertyInfo, setter, false, isValidField, processor);
InsertObjectDestroyedCheck(typeInfo, processor);
setter.Body.OptimizeMacros();
}
private void WriteGetterCollection(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition getter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition nativePropertyField, FieldDefinition collectionWrapperField)
{
ILProcessor processor = BeginGetter(getter);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Ldfld, collectionWrapperField);
// Save the position of the branch instruction for later, when we have a reference to its target.
// (will insert Brtrue_S before this instruction as a null check on the wrapper field)
processor.Emit(OpCodes.Ldarg_0);
Instruction branchPosition = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
processor.Emit(OpCodes.Ldc_I4_1);
processor.Emit(OpCodes.Ldsfld, nativePropertyField);
// New delegate marshaling code, this will use a cached delegate
EmitCachedMarshalingDelegates(processor, propertyInfo, ManagedUnrealMarshalerType.Default);
System.Reflection.ConstructorInfo collectionCtor;
System.Reflection.MethodInfo fromNativeMethod;
System.Reflection.MethodInfo toNativeMethod;
GetInstancedMarshalerMethods(propertyInfo, ManagedUnrealMarshalerType.Default, out collectionCtor, out fromNativeMethod, out toNativeMethod);
int numFromNativeParams = fromNativeMethod.GetParameters().Length;
// Create an instance of the collection marshaler and store in the member field
processor.Emit(OpCodes.Newobj, assembly.MainModule.ImportEx(collectionCtor));
processor.Emit(OpCodes.Stfld, collectionWrapperField);
// Store the branch destination
processor.Emit(OpCodes.Ldarg_0);
Instruction branchTarget = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
processor.Emit(OpCodes.Ldfld, collectionWrapperField);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Call, uobjectAddressGetter);
processor.Emit(OpCodes.Ldsfld, offsetField);
processor.Emit(OpCodes.Call, intPtrAddMethod);
if (numFromNativeParams == marshalerFromNativeParamCount)
{
// arrayIndex, prop (IntPtr.Zero as prop is already known by the collection marshaler), this
processor.Emit(OpCodes.Ldc_I4_0);
processor.Emit(OpCodes.Ldnull);
processor.Emit(OpCodes.Ldarg_0);
}
else
{
System.Diagnostics.Debug.Assert(numFromNativeParams == marshalerFromNativeParamCountMin);
}
processor.Emit(OpCodes.Callvirt, assembly.MainModule.ImportEx(fromNativeMethod));
// Now insert the branch
Instruction branchInstruction = processor.Create(OpCodes.Brtrue_S, branchTarget);
processor.InsertBefore(branchPosition, branchInstruction);
EndGetter(typeInfo, propertyInfo, getter, isValidField, processor);
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
typeInfo.AdditionalFlags |= ManagedUnrealTypeInfoFlags.UClass;
typeInfo.ClassFlags |= (EClassFlags)Flags;
if (!string.IsNullOrEmpty(Config))
{
typeInfo.ClassConfigName = Config;
}
}
private void WriteGetterFixedSizeArray(TypeDefinition type, ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo,
MethodDefinition getter, FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition nativePropertyField,
FieldDefinition fixedSizeArrayField)
{
ILProcessor processor = BeginGetter(getter);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Ldfld, fixedSizeArrayField);
// Save the position of the branch instruction for later, when we have a reference to its target.
// (will insert Brtrue_S before this instruction as a null check on the wrapper field)
processor.Emit(OpCodes.Ldarg_0);
Instruction branchPosition = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
MethodReference constructor = null;
foreach (MethodDefinition ctor in fixedSizeArrayField.FieldType.Resolve().GetConstructors())
{
if (ctor.Parameters.Count == 3)
{
constructor = ctor;
break;
}
}
VerifyNonNull(constructor, type, "constructor for " + fixedSizeArrayField.FieldType.FullName);
constructor = GetConstrainedGenericTypeCtor(fixedSizeArrayField.FieldType, constructor);
// new TFixedSizeArray<XXXX>(IntPtr.Add(Address, XXXX_Offset), XXXX_PropertyAddress, this);
// IntPtr.Add(this.Address, XXXX_Offset)
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Call, uobjectAddressGetter);
processor.Emit(OpCodes.Ldsfld, offsetField);
processor.Emit(OpCodes.Call, intPtrAddMethod);
// XXXX_PropertyAddress
processor.Emit(OpCodes.Ldsfld, nativePropertyField);
// this
processor.Emit(OpCodes.Ldarg_0);
// Create an instance of the array and store in the member field
processor.Emit(OpCodes.Newobj, constructor);
processor.Emit(OpCodes.Stfld, fixedSizeArrayField);
// return XXXX;
processor.Emit(OpCodes.Ldarg_0);
Instruction branchTarget = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
processor.Emit(OpCodes.Ldfld, fixedSizeArrayField);
// Insert the branch (before the return statement)
Instruction branchInstruction = processor.Create(OpCodes.Brtrue_S, branchTarget);
processor.InsertBefore(branchPosition, branchInstruction);
EndGetter(typeInfo, propertyInfo, getter, isValidField, processor);
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
if (Enabled)
{
typeInfo.ClassFlags |= EClassFlags.EditInlineNew;
}
else
{
typeInfo.ClassFlags &= ~EClassFlags.EditInlineNew;
}
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
if (IsTransient)
{
typeInfo.ClassFlags |= EClassFlags.Transient;
}
else
{
typeInfo.ClassFlags &= ~EClassFlags.Transient;
}
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
if (Collapse)
{
typeInfo.ClassFlags |= EClassFlags.CollapseCategories;
}
else
{
typeInfo.ClassFlags &= ~EClassFlags.CollapseCategories;
}
}
private void WriteGetter(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition getter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition nativePropertyField)
{
ILProcessor processor = BeginGetter(getter);
Instruction[] loadBufferInstructions = GetLoadNativeBufferInstructions(typeInfo, processor, null, offsetField);
MethodReference marshaler = GetFromNativeMarshaler(ManagedUnrealMarshalerType.Default, propertyInfo);
WriteMarshalFromNative(processor, nativePropertyField, loadBufferInstructions, null, marshaler);
EndGetter(typeInfo, propertyInfo, getter, isValidField, processor);
}
private void EmitLoad(ILProcessor processor, Instruction loadBuffer, FieldDefinition offsetField, FieldDefinition nativePropertyField,
ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, VariableDefinition marshalerVar, FieldDefinition field)
{
// Assuming we are targeting "this"
processor.Emit(OpCodes.Ldarg_0);
EmitLoad(processor, loadBuffer, offsetField, nativePropertyField, typeInfo, propertyInfo, marshalerVar);
// Assuming we are storing into a non-static field
processor.Emit(OpCodes.Stfld, field);
}
private void WriteSetter(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition setter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition nativePropertyField)
{
ILProcessor processor = BeginSetter(setter);
Instruction loadValue = processor.Create(OpCodes.Ldarg_1);
Instruction[] loadBufferInstructions = GetLoadNativeBufferInstructions(typeInfo, processor, null, offsetField);
MethodReference marshaler = GetToNativeMarshaler(ManagedUnrealMarshalerType.Default, propertyInfo);
WriteMarshalToNative(processor, nativePropertyField, loadBufferInstructions, null, loadValue, marshaler);
EndSetter(typeInfo, propertyInfo, setter, isValidField, processor);
}
private void WriteCachedFTextGetter(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition getter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition cachedFTextField)
{
ILProcessor processor = BeginGetter(getter);
WriteCachedFTextGetterSetter(offsetField, cachedFTextField, processor,
new Instruction[]
{
processor.Create(OpCodes.Ldfld, cachedFTextField)
});
EndGetter(typeInfo, propertyInfo, getter, isValidField, processor);
}
private FieldDefinition AddNativePropertyField(TypeDefinition type, ManagedUnrealFunctionInfo functionInfo, ManagedUnrealPropertyInfo paramInfo)
{
if (!ManagedUnrealTypeInfo.RequiresNativePropertyField(paramInfo, codeSettings.LazyFunctionParamInitDestroy))
{
return(null);
}
FieldDefinition field = new FieldDefinition(functionInfo.Name + "_" + paramInfo.Name + codeSettings.VarNames.PropertyAddress,
FieldAttributes.Static | FieldAttributes.Private, ufieldAddressTypeRef);
type.Fields.Add(field);
return(field);
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
if (IsPlacable && typeInfo.ClassFlags.HasFlag(EClassFlags.NotPlaceable))
{
InvalidTarget = true;
InvalidTargetReason = "The 'placeable' specifier is only allowed on classes which have " +
"a base class that's marked as not placeable. Classes are assumed to be placeable by default.";
}
else if (!IsPlacable)
{
typeInfo.ClassFlags |= EClassFlags.NotPlaceable;
}
}
public override void ProcessStruct(ManagedUnrealTypeInfo typeInfo)
{
typeInfo.StructFlags |= (EStructFlags)Flags;
if (ForceBlittable)
{
typeInfo.BlittableKind = ManagedUnrealBlittableKind.ForceBlittable;
}
if (Atomic)
{
typeInfo.StructFlags |= EStructFlags.Atomic;
}
typeInfo.AdditionalFlags |= ManagedUnrealTypeInfoFlags.UStruct;
}
private void EmitFunctionParamDestroy(ILProcessor processor, ManagedUnrealFunctionInfo functionInfo, ManagedUnrealPropertyInfo paramInfo,
VariableDefinition paramsBuffer, FieldDefinition nativePropertyField)
{
if (!codeSettings.LazyFunctionParamInitDestroy && ManagedUnrealTypeInfo.PropertyRequiresDestroy(paramInfo))
{
// Ensure the checks to include the native field prop are in sync with this function
Debug.Assert(nativePropertyField != null);
// NativeReflection.DestroyValue_InContainer(XXXX_YYYY_PropertyAddress.Address, ParamsBuffer)
EmitLdNativePropertyFieldAddress(processor, nativePropertyField);
processor.Emit(OpCodes.Ldloc, paramsBuffer);
processor.Emit(OpCodes.Call, reflectionDestroyValue_InContainer);
}
}
/// <summary>
/// Loads the static delegates FromNative / ToNative from CachedMarshalingDelegates<,>
/// e.g. CachedMarshalingDelegates<int, BlittableTypeMarshaler<int>>.FromNative / .ToNative
/// </summary>
private void EmitCachedMarshalingDelegates(ILProcessor processor, ManagedUnrealPropertyInfo propertyInfo, ManagedUnrealMarshalerType marshalerType)
{
foreach (ManagedUnrealTypeInfoReference genericArg in propertyInfo.GenericArgs)
{
Type cachedMarshalingDelegatesType = ManagedUnrealTypeInfo.GetCachedMarshalingDelegatesType(marshalerType, genericArg);
FieldReference fromNative = assembly.MainModule.ImportEx(
ManagedUnrealTypeInfo.GetCachedMarshalingDelegatesDelegate(cachedMarshalingDelegatesType, true));
FieldReference toNative = assembly.MainModule.ImportEx(
ManagedUnrealTypeInfo.GetCachedMarshalingDelegatesDelegate(cachedMarshalingDelegatesType, false));
processor.Emit(OpCodes.Ldsfld, fromNative);
processor.Emit(OpCodes.Ldsfld, toNative);
}
}
private void EmitStore(ILProcessor processor, Instruction loadBuffer, FieldDefinition offsetField, FieldDefinition nativePropertyField,
ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, Instruction[] loadValue, VariableDefinition marshalerVar)
{
if (marshalerVar != null)
{
processor.Emit(ManagedUnrealTypeInfo.IsPropertyMarshalerStruct(propertyInfo) ? OpCodes.Ldloca : OpCodes.Ldloc, marshalerVar);
}
Instruction[] loadBufferInstructions = GetLoadNativeBufferInstructions(typeInfo, processor, loadBuffer, offsetField);
MethodReference toNativeMethod = GetToNativeMarshaler(ManagedUnrealMarshalerType.Copy, propertyInfo);
WriteMarshalToNative(processor, nativePropertyField, loadBufferInstructions, null, loadValue, toNativeMethod);
}
private void WriteCachedFTextSetter(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition setter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition cachedFTextField)
{
ILProcessor processor = BeginSetter(setter);
WriteCachedFTextGetterSetter(offsetField, cachedFTextField, processor,
new Instruction[]
{
processor.Create(OpCodes.Ldfld, cachedFTextField),
processor.Create(OpCodes.Ldarg_1),
processor.Create(OpCodes.Callvirt, ftextCopyFrom)
});
EndSetter(typeInfo, propertyInfo, setter, isValidField, processor);
}
public override void ProcessClass(ManagedUnrealTypeInfo typeInfo)
{
if (ClassWithinType != null)
{
if (!ClassWithinType.IsSameOrSubclassOf(typeof(UObject)))
{
throw new ManagedUnrealTypeInfoException("The base type for ClassWithin is not a UObject type '" + typeInfo.FullName + "'");
}
}
else if (string.IsNullOrEmpty(Path))
{
throw new ManagedUnrealTypeInfoException("Type / path not specified for ClassWithin on '" + typeInfo.FullName + "'");
}
throw new NotImplementedException("TODO: Create some way of linking this to UClass " +
" if the target is a managed unreal type it wont have a path specified yet - use the fully qualified name?");
}
private Dictionary <ManagedUnrealPropertyInfo, ParameterDefinition> GetParamsFromMethod(TypeDefinition type,
ManagedUnrealFunctionInfo functionInfo, MethodDefinition method, InjectedMembers injectedMembers, bool addFields)
{
Dictionary <ManagedUnrealPropertyInfo, ParameterDefinition> parameters = new Dictionary <ManagedUnrealPropertyInfo, ParameterDefinition>();
foreach (ManagedUnrealPropertyInfo param in functionInfo.Params)
{
Type paramType = ManagedUnrealTypeInfo.GetTypeFromPropertyInfo(param);
List <ParameterDefinition> foundParams = new List <ParameterDefinition>();
foreach (ParameterDefinition paramDef in method.Parameters)
{
if (paramDef.Name == param.Name)
{
foundParams.Add(paramDef);
break;
}
}
VerifySingleResult(foundParams, type, "Param count mismatch " + param.Name + " in delegate");
if (addFields)
{
FieldDefinition isValidField = AddIsValidField(type, functionInfo, param);
FieldDefinition offsetField = AddOffsetField(type, functionInfo, param);
FieldDefinition nativePropertyField = AddNativePropertyField(type, functionInfo, param);
injectedMembers.SetFunctionParamIsValid(functionInfo, param, isValidField);
injectedMembers.SetFunctionParamOffset(functionInfo, param, offsetField);
injectedMembers.SetFunctionParamPropertyAddress(functionInfo, param, nativePropertyField);
}
parameters.Add(param, foundParams[0]);
}
if (addFields && functionInfo.ReturnProp != null)
{
FieldDefinition isValidField = AddIsValidField(type, functionInfo, functionInfo.ReturnProp);
FieldDefinition offsetField = AddOffsetField(type, functionInfo, functionInfo.ReturnProp);
FieldDefinition nativePropertyField = AddNativePropertyField(type, functionInfo, functionInfo.ReturnProp);
injectedMembers.SetFunctionParamIsValid(functionInfo, functionInfo.ReturnProp, isValidField);
injectedMembers.SetFunctionParamOffset(functionInfo, functionInfo.ReturnProp, offsetField);
injectedMembers.SetFunctionParamPropertyAddress(functionInfo, functionInfo.ReturnProp, nativePropertyField);
}
return(parameters);
}
/// <summary>
/// Inserts an IsValid safeguard on the given non-blittable struct marshaling method (ctor (FromNative) / ToNative)
/// </summary>
private void InsertStructMarshalerIsValidSafeguard(TypeDefinition type, ManagedUnrealTypeInfo structInfo,
MethodDefinition method, InjectedMembers injectedMembers, ILProcessor processor, bool isCtor)
{
if (!codeSettings.GenerateIsValidSafeguards)
{
return;
}
FieldDefinition structIsValidField = injectedMembers.StructIsValid;
if (structIsValidField == null)
{
return;
}
// If the struct isn't valid create a log and set any out params to default values
// if (!structName_IsValid)
// {
// NativeReflection.LogInvalidStructAccessed("XXXX");
// PropXXX = default(XXXX); (constructor only)
// return;
// }
List <Instruction> instructions = new List <Instruction>();
Instruction branchTarget = processor.Body.Instructions[0];
instructions.Add(processor.Create(OpCodes.Ldsfld, structIsValidField));
instructions.Add(processor.Create(OpCodes.Brtrue, branchTarget));
instructions.Add(processor.Create(OpCodes.Ldstr, structInfo.Path));
instructions.Add(processor.Create(OpCodes.Call, reflectionLogInvalidStructAccessedMethod));
if (isCtor)
{
// Set struct members to default(XXXX)
instructions.AddRange(CreateStructPropertyDefaults(processor, structInfo, type));
}
instructions.Add(processor.Create(OpCodes.Ret));
// Insert the instructions at the start
InsertInstructionsAt(processor, 0, instructions.ToArray());
}
private void WriteGetterDelegate(ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, MethodDefinition getter,
FieldDefinition isValidField, FieldDefinition offsetField, FieldDefinition delegateWrapperField)
{
ILProcessor processor = BeginGetter(getter);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Ldfld, delegateWrapperField);
// Save the position of the branch instruction for later, when we have a reference to its target.
// (will insert Brtrue_S before this instruction as a null check on the wrapper field)
processor.Emit(OpCodes.Ldarg_0);
Instruction branchPosition = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
Type delegateType = ManagedUnrealTypeInfo.GetTypeFromPropertyInfo(propertyInfo);
// Find the default constructor / SetAddress method for the delegate
System.Reflection.ConstructorInfo delegateCtor = delegateType.GetConstructor(Type.EmptyTypes);
System.Reflection.MethodInfo setAddressMethod = delegateType.GetMethod("SetAddress");
// Create an instance of the delegate and store in the member field
processor.Emit(OpCodes.Newobj, assembly.MainModule.ImportEx(delegateCtor));
processor.Emit(OpCodes.Stfld, delegateWrapperField);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Ldfld, delegateWrapperField);
processor.Emit(OpCodes.Ldarg_0);
processor.Emit(OpCodes.Call, uobjectAddressGetter);
processor.Emit(OpCodes.Ldsfld, offsetField);
processor.Emit(OpCodes.Call, intPtrAddMethod);
processor.Emit(OpCodes.Callvirt, assembly.MainModule.ImportEx(setAddressMethod));
processor.Emit(OpCodes.Ldarg_0);
Instruction branchTarget = processor.Body.Instructions[processor.Body.Instructions.Count - 1];
processor.Emit(OpCodes.Ldfld, delegateWrapperField);
// Insert the branch
Instruction branchInstruction = processor.Create(OpCodes.Brtrue_S, branchTarget);
processor.InsertBefore(branchPosition, branchInstruction);
EndGetter(typeInfo, propertyInfo, getter, isValidField, processor);
}
private Instruction[] CreateStructPropertyDefaults(ILProcessor processor, ManagedUnrealTypeInfo structInfo, TypeDefinition structType)
{
List <Instruction> instructions = new List <Instruction>();
Dictionary <string, FieldDefinition> fieldsByName = new Dictionary <string, FieldDefinition>();
foreach (FieldDefinition fieldDef in structType.Fields)
{
fieldsByName.Add(fieldDef.Name, fieldDef);
}
foreach (ManagedUnrealPropertyInfo propertyInfo in structInfo.Properties)
{
FieldDefinition field = null;
fieldsByName.TryGetValue(propertyInfo.Name, out field);
VerifyNonNull(field, structType, "field " + propertyInfo.Name);
instructions.Add(processor.Create(OpCodes.Ldarg_0));
instructions.AddRange(CreateSetDefaultValue(processor, propertyInfo.Type.TypeCode, field));
}
return(instructions.ToArray());
}
private void EmitStore(ILProcessor processor, Instruction loadBuffer, FieldDefinition offsetField, FieldDefinition nativePropertyField,
ManagedUnrealTypeInfo typeInfo, ManagedUnrealPropertyInfo propertyInfo, VariableDefinition marshalerVar, ParameterDefinition param)
{
// This is moving the parameter into the native buffer
Instruction[] loadValue = null;
if (propertyInfo.IsByRef)
{
// If this is a "ref" param we need to pass the arg without the ref as no marshalers use by ref args.
// (if they did support ref we would need to do the opposite on all args which didn't match the ref arg)
System.Diagnostics.Debug.Assert(param.ParameterType.IsByReference);
loadValue = new Instruction[]
{
processor.Create(OpCodes.Ldarg, param),
CreateLdRefOutParam(processor, param, propertyInfo.Type.TypeCode)
};
}
else
{
loadValue = new Instruction[] { processor.Create(OpCodes.Ldarg, param) };
}
EmitStore(processor, loadBuffer, offsetField, nativePropertyField, typeInfo, propertyInfo, loadValue, marshalerVar);
}