rustdoc: inherit parent's stability where applicable #130798
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r? @notriddle rustbot has assigned @notriddle. Use |
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Some changes occurred in src/librustdoc/clean/types.rs cc @camelid |
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This seems basically correct (also, it's totally unstable, so as long as nobody complains it should be fine). @bors r+ |
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Rollup of 7 pull requests Successful merges: - rust-lang#130234 (improve compile errors for invalid ptr-to-ptr casts with trait objects) - rust-lang#130752 (Improve assembly test for CMSE ABIs) - rust-lang#130764 (Separate collection of crate-local inherent impls from error tracking) - rust-lang#130788 (Pin memchr to 2.5.0 in the library rather than rustc_ast) - rust-lang#130789 (add InProgress ErrorKind gated behind io_error_inprogress feature) - rust-lang#130793 (Mention `COMPILETEST_VERBOSE_CRASHES` on crash test failure) - rust-lang#130798 (rustdoc: inherit parent's stability where applicable) Failed merges: - rust-lang#130735 (Simple validation for unsize coercion in MIR validation) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#130798 - lukas-code:doc-stab, r=notriddle rustdoc: inherit parent's stability where applicable It is currently not possible for a re-export to have a different stability (rust-lang#30827). Therefore the standard library uses a hack when moving items like `std::error::Error` or `std::net::IpAddr` into `core` by marking the containing module (`core::error` / `core::net`) as unstable or stable in a later version than the items the module contains. Previously, rustdoc would always show the *stability as declared* for an item rather than the *stability as publicly reachable* (i.e. the features required to actually access the item), which could be confusing when viewing the docs. This PR changes it so that we show the stability of the first unstable parent or the most recently stabilized parent instead, to hopefully make things less confusing. fixes rust-lang#130765 screenshots:  
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rustdoc perf: clone `clean::Item` less In rust-lang#130798, I caused a small perf regression for rustdoc (see rust-lang#130807 (comment)), so here is a small improvement to make up for it 😺. r? ghost
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…iddle rustdoc perf: clone `clean::Item` less In rust-lang#130798, I caused a small perf regression for rustdoc (see rust-lang#130807 (comment)), so here is a small improvement to make up for it 😺. This change is actually unrelated to the minor perf regression in `Item::stability` and instead fixes a more relevant perf problem that I found while investigating: For certain crates with many impls on type aliases, we unnecessarily cloned large `clean::Item`s multiple times -- now we just borrow them.
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…iddle rustdoc perf: clone `clean::Item` less In rust-lang#130798, I caused a small perf regression for rustdoc (see rust-lang#130807 (comment)), so here is a small improvement to make up for it 😺. This change is actually unrelated to the minor perf regression in `Item::stability` and instead fixes a more relevant perf problem that I found while investigating: For certain crates with many impls on type aliases, we unnecessarily cloned large `clean::Item`s multiple times -- now we just borrow them.
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rustdoc: rewrite stability inheritance as a doc pass Since doc inlining can almost arbitrarily change the module hierarchy, we can't just use the HIR ancestors of an item to compute its effective stability. This PR moves the stability inheritance that I implemented in rust-lang#130798 into a new doc pass `propagate-stability` that runs after doc inlining and uses the post-inlining ancestors of an item to correctly compute its effective stability. fixes rust-lang#131020 r? `@notriddle`
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It is currently not possible for a re-export to have a different stability (#30827). Therefore the standard library uses a hack when moving items like
std::error::Errororstd::net::IpAddrintocoreby marking the containing module (core::error/core::net) as unstable or stable in a later version than the items the module contains.Previously, rustdoc would always show the stability as declared for an item rather than the stability as publicly reachable (i.e. the features required to actually access the item), which could be confusing when viewing the docs. This PR changes it so that we show the stability of the first unstable parent or the most recently stabilized parent instead, to hopefully make things less confusing.
fixes #130765
screenshots:
