Feature: Change Member Access Modifiers to Allow Inlining

[WalkerCodeRanger]

I find myself wishing that when I inline a method, I could change the visibility of things it refers to that need to be visible for the inline to work.

Two ways this could work:

1. An option on the InlineAttribute that allows you to automatically promote the visibility of things referenced by the method being inlined. Most commonly, I expect to want to promote private to internal. But sometimes it may be necessary to promote to public.
2. A separate attribute that is applied to the thing you want to change the access modifier on. This makes it more explicit.

Why not just make the member more accessible?

• Because I want to enforce with the compiler that nothing should call the member except the method being inlined. For example, I have a private constructor that is called by a number of static factory methods. I don't want anyone to directly call the constructor because the factory methods exist to make it clear which case is being constructed and enforce certain limits. But all the factory methods are short and ought to be inlined. However, doing so requires that the constructor not be private.

[WalkerCodeRanger]

It looks like Publicize.Fody does something similar to what I am suggesting, it just does it globally for a whole project. It might make a good reference to see how it could be done.