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c#inheritanceinterfaceaoppostsharp
Ladislav Mrnka
Ladislav Mrnka

Reputation: 364249

PostSharp and aspect inheritance through hierarchy

According to PostSharp documentation, aspect inheritance should be among others supported on:

Parameter or Return Value of an abstract, virtual or interface method

But in my case it doesn't seem to support inheritance when those supported elements are combined. I have this minimal code to reproduce the issue:

public interface IData { }

public interface ITest
{
    void DoSomething([Required] IData data);
}

public abstract class AbstractTest : ITest
{
    public abstract void DoSomething(IData data);
}

public class Test : AbstractTest
{
    public override void DoSomething(IData data)
    {
        throw new NotImplementedException();
    }
}

Building this code ends with:

PostSharp.Patterns.Contracts.RequiredAttribute" cannot be applied to method "PostSharpInheritance.AbstractTest.DoSomething(PostSharpInheritance.IData)@data" because it is abstract.

If I move the Required attribute from interface to to abstract method the compilation will succeed. If I place the Required attribute in both interface and abstract method I will get the same error.

How am I supposed to place attributes (contracts) on interface without loosing option for using abstract classes in class hierarchy implementing that interface?

Upvotes: 3

Views: 164

Answers (1)

AlexD
AlexD

Reputation: 5101

The example code from the question should work as described in the documentation. The problem is caused by a bug in PostSharp code, which has been reported to PostSharp team. The fix will be implemented in one of the upcoming builds of version 3.1.

Update: This bug has been fixed in the PostSharp build 3.1.33.

Upvotes: 1

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