本文整理汇总了C#中MethodDefinition.AllowsNullReturnValue方法的典型用法代码示例。如果您正苦于以下问题：C# MethodDefinition.AllowsNullReturnValue方法的具体用法？C# MethodDefinition.AllowsNullReturnValue怎么用？C# MethodDefinition.AllowsNullReturnValue使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MethodDefinition的用法示例。
在下文中一共展示了MethodDefinition.AllowsNullReturnValue方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: InnerProcess
void InnerProcess(MethodDefinition method)
{
var localValidationFlags = validationFlags;
var attribute = method.DeclaringType.GetNullGuardAttribute();
if (attribute != null)
{
localValidationFlags = (ValidationFlags)attribute.ConstructorArguments[0].Value;
}
if ((!localValidationFlags.HasFlag(ValidationFlags.NonPublic) && (!(method.IsPublic || method.IsExplicitInterfaceMethod()) || !method.DeclaringType.IsPublicOrNestedPublic())))
return;
var body = method.Body;
var sequencePoint = body.Instructions.Select(i => i.SequencePoint).FirstOrDefault();
body.SimplifyMacros();
if (localValidationFlags.HasFlag(ValidationFlags.Arguments))
{
InjectMethodArgumentGuards(method, body, sequencePoint);
}
if (!method.IsAsyncStateMachine() &&
!method.IsIteratorStateMachine())
{
InjectMethodReturnGuard(localValidationFlags, method, body, sequencePoint);
}
if (method.IsAsyncStateMachine())
{
var returnType = method.ReturnType;
var genericReturnType = method.ReturnType as GenericInstanceType;
if (genericReturnType != null && genericReturnType.HasGenericArguments && genericReturnType.Name.StartsWith("Task"))
{
returnType = genericReturnType.GenericArguments[0];
}
if (localValidationFlags.HasFlag(ValidationFlags.ReturnValues) &&
!method.AllowsNullReturnValue() &&
returnType.IsRefType() &&
returnType.FullName != typeof(void).FullName)
{
InjectMethodReturnGuardAsync(body, string.Format(CultureInfo.InvariantCulture, ReturnValueOfMethodIsNull, method.FullName), method.FullName);
}
}
body.InitLocals = true;
body.OptimizeMacros();
}示例2: InjectMethodReturnGuard
void InjectMethodReturnGuard(ValidationFlags localValidationFlags, MethodDefinition method, MethodBody body, SequencePoint seqPoint)
{
var guardInstructions = new List<Instruction>();
var returnPoints = body.Instructions
.Select((o, ix) => new { o, ix })
.Where(a => a.o.OpCode == OpCodes.Ret)
.Select(a => a.ix)
.OrderByDescending(ix => ix);
foreach (var ret in returnPoints)
{
if (localValidationFlags.HasFlag(ValidationFlags.ReturnValues) &&
!method.AllowsNullReturnValue() &&
method.ReturnType.IsRefType() &&
method.ReturnType.FullName != typeof(void).FullName &&
!method.IsGetter)
{
var errorMessage = string.Format(CultureInfo.InvariantCulture, ReturnValueOfMethodIsNull, method.FullName);
AddReturnNullGuard(body.Instructions, seqPoint, ret, method.ReturnType, errorMessage, Instruction.Create(OpCodes.Throw));
}
if (localValidationFlags.HasFlag(ValidationFlags.Arguments))
{
foreach (var parameter in method.Parameters.Reverse())
{
// This is no longer the return instruction location, but it is where we want to jump to.
var returnInstruction = body.Instructions[ret];
if (localValidationFlags.HasFlag(ValidationFlags.OutValues) &&
parameter.IsOut &&
parameter.ParameterType.IsRefType() &&
!parameter.AllowsNull())
{
var errorMessage = string.Format(CultureInfo.InvariantCulture, OutParameterIsNull, parameter.Name);
guardInstructions.Clear();
if (isDebug)
{
InstructionPatterns.LoadArgumentOntoStack(guardInstructions, parameter);
InstructionPatterns.CallDebugAssertInstructions(guardInstructions, errorMessage);
}
InstructionPatterns.LoadArgumentOntoStack(guardInstructions, parameter);
InstructionPatterns.IfNull(guardInstructions, returnInstruction, i =>
{
InstructionPatterns.LoadInvalidOperationException(i, errorMessage);
// Throw the top item off the stack
i.Add(Instruction.Create(OpCodes.Throw));
});
guardInstructions[0].HideLineFromDebugger(seqPoint);
body.Instructions.Insert(ret, guardInstructions);
}
}
}
}
}