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This also changes the builder to allow using
`x.py test src/test/rustdoc-ui/intra-doc`; before, it would panic that
no paths were found.
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The new error was confusing when there was partial resolution (something
like `std::io::nonexistent`); the old one is better for those cases.
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The previous error was confusing since it made it sound like you can't
link to items that are defined outside the current module.
Also suggested importing the item.
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Now that `PrimTy::name()` exists, there's no need to carry around the
name of the primitive that failed to resolve. This removes the variants
special-casing primitives in favor of `NotResolved`.
- Remove `NoPrimitiveImpl` and `NoPrimitiveAssocItem`
- Remove hacky `has_primitive` check in `resolution_failure()`
- Fixup a couple tests that I forgot to `--bless` before
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- Add `PrimTy::name` and `PrimTy::name_str`
- Use those new functions to distinguish between the name in scope and
the canonical name
- Fix diagnostics for primitive types
- Add tests for primitives
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Previously, these were spread throughout the codebase. This had two
drawbacks:
1. It caused the fast path to be slower: even if a link resolved,
rustdoc would still perform various lookups for the error diagnostic.
2. It was inconsistent and didn't always give all diagnostics (https://github.com/rust-lang/rust/issues/76925)
Now, diagnostics only perform expensive lookups in the error case.
Additionally, the error handling is much more consistent, both in
wording and behavior.
- Remove `CannotHaveAssociatedItems`, `NotInScope`, `NoAssocItem`, and `NotAVariant`
in favor of the more general `NotResolved`
`resolution_failure` will now look up which of the four above
categories is relevant, instead of requiring the rest of the code to
be consistent and accurate in which it picked.
- Remove unnecessary lookups throughout the intra-doc link pass. These
are now done by `resolution_failure`.
+ Remove unnecessary `extra_fragment` argument to `variant_field()`;
it was only used to do lookups on failure.
+ Remove various lookups related to associated items
+ Remove distinction between 'not in scope' and 'no associated item'
- Don't perform unnecessary copies
- Remove unused variables and code
- Update tests
- Note why looking at other namespaces is still necessary
- 'has no inner item' -> 'contains no item'
bless tests
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'not in scope' -> 'not in `module`'
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Moves this detection into `resolution_failure` to avoid doing
unnecessary work and make the control flow a little easier to work with.
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Previously, this called `check_full_res` for values and types, but not
macros. This would result in not showing when there was a partial
resolution for a parent of the item.
This now calls `check_full_res`. Additionally, it checks if there was a
disambiguator, and if so, says that specific kind wasn't found instead
of saying generically 'associated item'.
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This is both more specific and easier to read.
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Before, it would arbitrarily pick the third-to-last if the last three or
more did not resolve.
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Before:
```
warning: unresolved link to `m`
--> m.rs:1:6
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1 | /// [value@m]
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= note: `#[warn(broken_intra_doc_links)]` on by default
= note: no item named `m` is in scope
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
```
After:
```
warning: unresolved link to `m`
--> m.rs:1:6
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1 | /// [value@m]
| ^^^^^^^ help: to link to the macro, use its disambiguator: `m!`
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= note: `#[warn(broken_intra_doc_links)]` on by default
= note: this link resolves to the macro `m`, which is not in the value namespace
```
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Before:
```
= note: this link partially resolves to the struct `S`
= note: no `fmt` in `S`
```
After:
```
= note: the struct `S` has no field or associated item named `fmt`
```
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Look at this beauty:
```rust
error: unresolved link to `S::h`
--> intra-link-errors.rs:51:6
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51 | /// [type@S::h]
| ^^^^^^^^^ help: to link to the associated function, use its disambiguator: `S::h()`
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= note: this link resolves to the associated function `h`, which is not in the type namespace
```
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