Add a Bump interner
#64
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Adds another interner option (sorry). Rather than holding interned
Ts in individualBoxes (like the currentArenainterner), this newBumpinterner uses bump allocation. This approach is similar to how rustc handles interning.My initial version is pretty bare-bones compared to the API of the other interners in this crate. I'd be happy to add functions as required.
An interesting thing to note is that one
Bumpcould have multipleinternersets for different types while sharing the samearenafor all of them. Unfortunately, I can't think of a way to make this general aside from defining by handBump2<T, U>,Bump3<T, U, V>, ...