Allow support for nested StrongleTypeIds

[Moo-Juice]

Really like this library and have began integrating it in to my engine. However, there's a part of my project I cannot use this library easily, and that's where the strongly typed Id could be used as a nested class.

Essentially, what i want to do is this:

public class Factory<T> where T : ISomeInterface
{
    [StronglyTypedId(generateJsonConverter: false, StronglyTypedIdBackingType.Guid)]
    public partial struct Handle { }
}

Is this sort of thing possible? If I need to make Factory<T> partial also, I'd not be against it.

[andrewlock]

Yes, this is supported in the latest version 🙂

StronglyTypedId/test/StronglyTypedIds.Tests/StronglyTypedIdGeneratorTests.cs

Line 165 in 1a9d82a

public Task CanGenerateGenericVeryNestedIdInFileScopeNamespace()

[Moo-Juice]

Hi there, it appears I am using the latest version. When I add the handle, I get 2 errors. This is the relevant generated section:

And the two errors:

error CS0101: The namespace 'Jigsaw.Memory' already contains a definition for 'Factory'
error CS0416: 'Jigsaw.Memory.Factory<T>.Handle.HandleTypeConverter': an attribute argument cannot use type parameters

I am probably doing something obviously wrong. Thanks for you assistance! :)

Oh, and the original source:

[andrewlock]

Ah, add partial to your Factory<T> type 🙂

[Moo-Juice]

Thanks for your prompt response, but I still had this issue :)

[System.ComponentModel.TypeConverter(typeof(HandleTypeConverter))]

error CS0416: 'Jigsaw.Memory.Factory<T>.Handle.HandleTypeConverter': an attribute argument cannot use type parameters

Hope you're well :)

[andrewlock]

Yeah unfortunately, that's not valid c# to use that attribute, because the attribute is defined as a nested type, which means the full name has a generic type parameter in it, and you can't use that. Your only options are to remove the attribute or to not nest it in the generic unfortunately

[Moo-Juice]

Ok, understood! Do I need to remove it from the generated file, or is there an option I can use to to have it removed as part of the source generation? Have a good day :)

[andrewlock]

Unfortunately you will need to use a custom template to remove the attribute from the generated code. You can read about how to use the codefix provider to create a custom template in the README and you can read more about what you can do with them here. Hope that helps!