ToTokens for NonZero integers?

[greyblake]

Hi, thank you for the crate and your work, which powers a lot of library developers :heart:

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Request

Is there any chance to implement ToTokens for NonZero integers? (::core::num::NonZeroU8, etc...)

If you're fine with the idea, I could open a PR. It may not be a plane decision, how NonZero integer should be converted into tokens

Variant A (with a runtime penalty):

::core::num::NonZeroU8::new(123).unwrap()

Variant B (with unsafe):

unsafe { ::core::num::NonZeroU8::new_unchecked(123) }

Context

In nutype I'd like to add support for NonZero integers. With my current implementation the effort would be relatively low if NonZero integers implemented ToTokens?

[dtolnay]

I think I would prefer not to build this into this crate. Hopefully there's a different way you could handle these in nutype.

[greyblake]

@dtolnay All cool. Thanks for the quick reply.