Can I insert backing fields for properties with a specific implementation?

Question

I'm trying to create an attribute with PostSharp to implement specific backing fields of properties. However I did not find any helpful answers in the documentation, official examples or here on SO.

Here's an example of what I'm trying to do:

[WrappedProperty]
public int MyProperty { get; set; }

will compile to

private WrapperClass<int> _generatedBackingField_myProperty;

public int MyProperty 
{
    get => _generatedBackingField_myProperty.Value;
    set => _generatedBackingField_myProperty.Value = value;
}

Is there any way to achieve this with PostSharp?

Answer 1

I found the answer, you can use LocationInterceptionAspect to intercept properties. So the code would look like this:

[PSerializable]
public class WrappedProperty : LocationInterceptionAspect
{
    private WrapperClass<object> _backingField;

    public override void OnGetValue(LocationInterceptionArgs args)
    {
        InitBackingField();

        args.Value = _backingField.Value;
    }

    public override void OnSetValue(LocationInterceptionArgs args)
    {
        InitBackingField();

        _backingField.Value = args.Value;
    }
}