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Record all imports (`use`, `extern crate`) in the crate metadata
This PR adds non-`pub` `use` and `extern crate` imports in the crate metadata since hygienic macros invoked in other crates may use them. We already include all other non-`pub` items in the crate metadata. This improves import suggestions in some cases.
Fixes #42337.
r? @nrc
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* Visibility was missing from impl items.
* Attributes and docs were missing from consts and types in impls.
* Const default values were missing from traits.
This unifies the code that handles associated items from impls and traits.
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r=GuillaumeGomez,QuietMisdreavus
show in docs whether the return type of a function impls Iterator/Read/Write
Closes #25928
This PR makes it so that when rustdoc documents a function, it checks the return type to see whether it implements a handful of specific traits. If so, it will print the impl and any associated types. Rather than doing this via a whitelist within rustdoc, i chose to do this by a new `#[doc]` attribute parameter, so things like `Future` could tap into this if desired.
### Known shortcomings
~~The printing of impls currently uses the `where` class over the whole thing to shrink the font size relative to the function definition itself. Naturally, when the impl has a where clause of its own, it gets shrunken even further:~~ (This is no longer a problem because the design changed and rendered this concern moot.)
The lookup currently just looks at the top-level type, not looking inside things like Result or Option, which renders the spotlights on Read/Write a little less useful:
<details><summary>`File::{open, create}` don't have spotlight info (pic of old design)</summary>
</details>
All three of the initially spotlighted traits are generically implemented on `&mut` references. Rustdoc currently treats a `&mut T` reference-to-a-generic as an impl on the reference primitive itself. `&mut Self` counts as a generic in the eyes of rustdoc. All this combines to create this lovely scene on `Iterator::by_ref`:
<details><summary>`Iterator::by_ref` spotlights Iterator, Read, and Write (pic of old design)</summary>
</details>
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Fixes #45640.
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DefaultImpl is a highly confusing name for what we now call auto impls,
as in `impl Send for ..`. The name auto impl is not formally decided
but for sanity anything is better than `DefaultImpl` which refers
neither to `default impl` nor to `impl Default`.
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have to be hashed in downstream crates.
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This commit moves the `crates` method to a query and then migrates all callers
to use a query instead of the now-renamed `crates_untracked` method where
possible.
Closes #41417
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Should hopefully more accurately reflect what's happening! This commit also
removes the cache in the cstore implementation as it's already cached through
the query infrastructure.
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This commit migrates the `item_body` method on `CrateStore` to a query instead
to enable better tracking of dependencies and whatnot.
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Given the previous commit, these are now trivially representable as queries!
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The main use of `CrateStore` *before* the `TyCtxt` is created is during
resolution, but we want to be sure that any methods used before resolution are
not used after the `TyCtxt` is created. This commit starts moving the methods
used by resolve to all be named `{name}_untracked` where the rest of the
compiler uses just `{name}` as a query.
During this transition a number of new queries were added to account for
post-resolve usage of these methods.
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While we're at it, make it two separate queries so one's for rustdoc and one's
for the compiler, hopefully being a bit more targeted.
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Like #43008 (f668999), but _much more aggressive_.
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rustdoc: Fix missing enum variant reexports
Fixes #35488
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For renamed reexports the new name should be used.
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There are now 3 queries:
- inherent_impls(def-id): for a given type, get a `Rc<Vec<DefId>>` with
all its inherent impls. This internally uses `crate_inherent_impls`,
doing some hacks to keep the current deps (which, btw, are not clearly
correct).
- crate_inherent_impls(crate): gathers up a map from types
to `Rc<Vec<DefId>>`, touching the entire krate, possibly generating
errors.
- crate_inherent_impls_overlap_check(crate): performs overlap checks
between the inherent impls for a given type, generating errors.
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Many thanks to ollie27 for spotting all the places.
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[9/n] rustc: move type information out of AdtDef and TraitDef.
_This is part of a series ([prev](https://github.com/rust-lang/rust/pull/37688) | [next]()) of patches designed to rework rustc into an out-of-order on-demand pipeline model for both better feature support (e.g. [MIR-based](https://github.com/solson/miri) early constant evaluation) and incremental execution of compiler passes (e.g. type-checking), with beneficial consequences to IDE support as well.
If any motivation is unclear, please ask for additional PR description clarifications or code comments._
<hr>
Both `AdtDef` and `TraitDef` contained type information (field types, generics and predicates) which was required to create them, preventing their use before that type information exists, or in the case of field types, *mutation* was required, leading to a variance-magicking implementation of `ivar`s.
This PR takes that information out and the resulting cleaner setup could even eventually end up merged with HIR, because, just like `AssociatedItem` before it, there's no dependency on types anymore.
(With one exception, variant discriminants should probably be moved into their own map later.)
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Also simplify some of the `ty::AssociatedItem` representation,
in particular by folding `has_value` into `hir::Defaultness`
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This speeds up compilation by 3--6% across most of rustc-benchmarks.
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rustdoc: Fix missing *mut T impl
`impl<T> *mut T` is currently missing from
https://doc.rust-lang.org/nightly/std/primitive.pointer.html and this adds
it back.
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