Switch rustdoc from clean::Stability to rustc_attr::Stability#77817
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bors merged 3 commits intorust-lang:masterfrom Oct 14, 2020
Merged
Switch rustdoc from clean::Stability to rustc_attr::Stability#77817bors merged 3 commits intorust-lang:masterfrom
clean::Stability to rustc_attr::Stability#77817bors merged 3 commits intorust-lang:masterfrom
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This gives greater type safety and is less work to maintain on the rustdoc end.
compiler/rustc_attr/src/builtin.rs
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| (Self::Unstable { .. }, Self::Unstable { .. }) => Some(cmp::Ordering::Equal), | ||
| (Self::Stable { .. }, Self::Stable { .. }) => Some(cmp::Ordering::Equal), | ||
| (Self::Unstable { .. }, Self::Stable { .. }) => Some(cmp::Ordering::Less), | ||
| (Self::Stable { .. }, Self::Unstable { .. }) => Some(cmp::Ordering::Greater), |
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I'd keep this bit in rustdoc (and remove the PartialOrd impl from StabilityLevel?).
I don't know what rustdoc rendering wants when sorting by stability, but it probably isn't something generally applicable.
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Also this can be simplified to mem::discriminant(self).cmp(mem::discriminant(other)).
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Also this can be simplified to mem::discriminant(self).cmp(mem::discriminant(other)).
Does rustc guarantee that the order of the enums matches the order of the discriminants? I thought layout was unspecified.
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Yes, discriminant values are specified, see https://doc.rust-lang.org/reference/items/enumerations.html?highlight=discriminant#custom-discriminant-values-for-fieldless-enumerations for enums without data, and https://github.com/rust-lang/rfcs/blob/master/text/2363-arbitrary-enum-discriminant.md#semantics for enums with data.
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LGTM modulo the ordering bit. |
Rustdoc's ordering requirements are probably not relevant to the rest of the compiler.
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r? @petrochenkov @bors r+ |
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📌 Commit 96b0446 has been approved by |
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Switch rustdoc from `clean::Stability` to `rustc_attr::Stability` This gives greater type safety and is less work to maintain on the rustdoc end. It also makes rustdoc more consistent with rustc. Noticed this while working on rust-lang#76998. - Remove `clean::Stability` in favor of `rustc_attr::Stability` - Remove `impl Clean for Stability`; it's no longer necessary r? @GuillaumeGomez cc @petrochenkov
This was referenced Oct 13, 2020
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Rollup of 8 pull requests Successful merges: - rust-lang#77765 (Add LLVM flags to limit DWARF version to 2 on BSD) - rust-lang#77788 (BTreeMap: fix gdb provider on BTreeMap with ZST keys or values) - rust-lang#77795 (Codegen backend interface refactor) - rust-lang#77808 (Moved the main `impl` for FnCtxt to its own file.) - rust-lang#77817 (Switch rustdoc from `clean::Stability` to `rustc_attr::Stability`) - rust-lang#77829 (bootstrap: only use compiler-builtins-c if they exist) - rust-lang#77870 (Use intra-doc links for links to module-level docs) - rust-lang#77897 (Move `Strip` into a separate rustdoc pass) Failed merges: - rust-lang#77879 (Provide better documentation and help messages for x.py setup) - rust-lang#77902 (Include aarch64-pc-windows-msvc in the dist manifests) r? `@ghost`
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Sort unstable items last in rustdoc, instead of first As far as I can tell, this is a bug introduced inadvertently by rust-lang#77817 in Rust 1.49. Older toolchains used to sort unstable items last. Notice how in the code before that PR, `(Unstable, Stable) => return Ordering::Greater` in src/librustdoc/html/render/mod.rs. Whereas after that PR, `(Unstable, Stable) => return Ordering::Less`. Compare https://doc.rust-lang.org/1.48.0/std/marker/index.html vs https://doc.rust-lang.org/1.49.0/std/marker/index.html.
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Rollup merge of rust-lang#118224 - dtolnay:rustdocsortunstable, r=fmease Sort unstable items last in rustdoc, instead of first As far as I can tell, this is a bug introduced inadvertently by rust-lang#77817 in Rust 1.49. Older toolchains used to sort unstable items last. Notice how in the code before that PR, `(Unstable, Stable) => return Ordering::Greater` in src/librustdoc/html/render/mod.rs. Whereas after that PR, `(Unstable, Stable) => return Ordering::Less`. Compare https://doc.rust-lang.org/1.48.0/std/marker/index.html vs https://doc.rust-lang.org/1.49.0/std/marker/index.html.
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This gives greater type safety and is less work to maintain on the rustdoc end. It also makes rustdoc more consistent with rustc.
Noticed this while working on #76998.
clean::Stabilityin favor ofrustc_attr::Stabilityimpl Clean for Stability; it's no longer necessaryr? @GuillaumeGomez
cc @petrochenkov