Shortcut keyword for current class type

[natehitze]

I have a fair amount of code like this:

public class FooController
{
    private readonly ILogger<FooController> _logger;
    public FooController(ILogger<FooController> logger)
    {
        _logger = logger;
    }
}

or another example:

public class FooSingleton
{
    private static FooSingleton _instance;
    private FooSingleton() {}
    public static FooSingleton GetInstance()
    {
        _instance ??= new FooSingleton(); // I think this could just be new() here
        return _instance;
    }
}

It would be nice if there was a keyword to replace the FooController bit of that inside the class. Something like this:

public class FooController
{
    private readonly ILogger<thistype> _logger;
    public FooController(ILogger<thistype> logger)
    {
        _logger = logger;
    }
}

or

public class FooSingleton
{
    private static thistype _instance;
    private FooSingleton() {} // Maybe this could even be thistype()?
    public static thistype GetInstance()
    {
        _instance ??= new thistype(); // I think this could just be new() here
        return _instance;
    }
}

The (admittedly small) value here is having a compile time check for referencing a class's own type. An issue with using ILogger<T> is that you can accidentally log for a different category (e.g. DI an ILogger<BarController> in FooController) and you can't catch it without an analyzer right now.

[jnm2]

See #252