Commits on Sep 26, 2024

1. [derive] Overhaul repr parsing …

   Represent the result of parsing all `#[repr(...)]` attributes on a type
   as a high-level type which is only capable of representing valid
   combinations of `#[repr(...)]` attributes and processes them into a
   concise representation that's easier for high-level code to work with.
   
   This prepares us to more easily fix #1748.
   
   While we're here, we make a number of other improvements.
   
   1) Errors are now converted to `TokenStream`s as late as possible rather
      than as early as possible, which was the previous behavior. This
      allows us to bail early when deriving an implied trait fails (e.g.,
      deriving `TryFromBytes` when the user wrote `#[derive(FromZeros)]`).
   2) Avoid re-computing some repr information in `TryFromBytes` enum
      support.

   

   joshlf committed Sep 26, 2024
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