Bump path-parse from 1.0.6 to 1.0.7 in /progtest#3
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Bumps [path-parse](https://github.com/jbgutierrez/path-parse) from 1.0.6 to 1.0.7. - [Release notes](https://github.com/jbgutierrez/path-parse/releases) - [Commits](https://github.com/jbgutierrez/path-parse/commits/v1.0.7) --- updated-dependencies: - dependency-name: path-parse dependency-type: indirect ... Signed-off-by: dependabot[bot] <support@github.com>
mikegerwitz
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Oct 4, 2021
Oh boy. What a mess of a change.
This demonstrates some significant issues we have with Symbol. I had
originally modelled the system a bit after Rustc's, but deviated in certain
regards:
1. This has a confurable base type to enable better packing without bit
twiddling and potentially unsafe tricks I'd rather avoid unless
necessary; and
2. The lifetime is not static, and there is no global, singleton interner;
and
3. I pass around references to a Symbol rather than passing around an
index into an interner.
For #3---this is done because there's no singleton interner and therefore
resolving a symbol requires a direct reference to an available interner. It
also wasn't clear to me (and still isn't, in fact) whether more than one
interner may be used for different contexts.
But, that doesn't preclude removing lifetimes and just passing around
indexes; in fact, I plan to do this in the frontend where the parser and
such will have direct interner access and can therefore just look up based
on a symbol index. We could reserve references for situations where
exposing an interner would be undesirable.
Anyway, more to come...
mikegerwitz
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Nov 11, 2022
This exposes the internal rendering of `ListDisplayWrapper::fmt` such that we can output a list without actually creating a list. This is used in an upcoming change for =ele_parse!= so that Sum NTs can render the union of all the QNames that their constituent NTs match on, recursively, as a single list, without having to create an ephemeral collection only for display. If Rust supports const functions for arrays/Vecs in the future, we could generate this at compile-time, if we were okay with the (small) cost, but this solution seems just fine. But output may be even _more_ performant since they'd all be adjacent in memory. This is used in these secenarios: 1. Diagnostic messages; 2. Error messages (overlaps with #1); and 3. `Display::fmt` of the `ParseState`s themselves. The reason that we want this to be reasonably performant is because #3 results in a _lot_ of output---easily GiB of output depending on what is being traced. Adding heap allocations to this would make it even slower, since a description is generated for each individual trace. Anyway, this is a fairly simple solution, albeit a little bit less clear, and only came after I had tried a number of other different approaches related to recursively constructing QName lists at compile time; they weren't worth the effort when this was so easy to do. DEV-7145
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Bumps path-parse from 1.0.6 to 1.0.7.
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