#[derive(Property, Export)] for enums by patataofcourse · Pull Request #371 · godot-rust/gdext (original) (raw)

MVP macros for deriving Property and Export in enums.

Not done yet, but hoping for reviews since this is my first contribution to a library of this size.

Commits will be squashed later, please review as one for now.

Current requirements for deriving these traits:

• Must be an enum
• Must have an explicit #[repr(i*/u*)] type
• Variants must be unit/fieldless and have explicit discriminant numbers (A = 2 instead of A(u32) = 2 or A)

From earlier attempts, it seemed like ToVariant and FromVariant were needed as well? Doesn't seem to be the case anymore, weirdly.

TODO list:

• #[derive(Property)]
  • Implement
  • Create tests
  • Document
  • Expand support?
• #[derive(Export)]
  • Implement
  • Create tests
  • Document
  • Expand support?