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Introduce `'ra` lifetime name.
`rustc_resolve` allocates many things in `ResolverArenas`. The lifetime used for references into the arena is mostly `'a`, and sometimes `'b`.
This commit changes it to `'rslv`, which is much more descriptive. The commit also changes the order of lifetimes on a couple of structs so that '`rslv` is second last, before `'tcx`, and does other minor renamings such as `'r` to `'a`.
r? ``@petrochenkov``
cc ``@oli-obk``
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`rustc_resolve` allocates many things in `ResolverArenas`. The lifetime
used for references into the arena is mostly `'a`, and sometimes `'b`.
This commit changes it to `'ra`, which is much more descriptive. The
commit also changes the order of lifetimes on a couple of structs so
that '`ra` is second last, before `'tcx`, and does other minor
renamings such as `'r` to `'a`.
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The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
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Translation of the lint message happens when the actual diagnostic is
created, not when the lint is buffered. Generating the message from
BuiltinLintDiag ensures that all required data to construct the message
is preserved in the LintBuffer, eventually allowing the messages to be
moved to fluent.
Remove the `msg` field from BufferedEarlyLint, it is either generated
from the data in the BuiltinLintDiag or stored inside
BuiltinLintDiag::Normal.
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Explicit imports are more standard nowadays and easier to read.
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Fixes https://github.com/rust-lang/rust/issues/123282
Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
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Includes related tests and documentation pages.
Michael Goulet: Don't issue feature error in resolver for f16/f128
unless finalize
Co-authored-by: Michael Goulet <michael@errs.io>
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Not the dropping of the trailing `s` -- this type describes a single
diagnostic and its name should be singular.
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`Resolver::report_error` always emits (this commit makes that clearer),
so the `span_delayed_bug` is unnecessary.
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situations like module-relative uses, we can do more accurate redundant import checking.
fixes #117448
For example unnecessary imports in std::prelude that can be eliminated:
```rust
use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly
use std::option::Option::None; //~ WARNING the item `None` is imported redundantly
```
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Improve 'generic param from outer item' error for `Self` and inside `static`/`const` items
Fixes #109596
Fixes #119936
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This involves lots of breaking changes. There are two big changes that
force changes. The first is that the bitflag types now don't
automatically implement normal derive traits, so we need to derive them
manually.
Additionally, bitflags now have a hidden inner type by default, which
breaks our custom derives. The bitflags docs recommend using the impl
form in these cases, which I did.
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Also add some `dcx` methods to types that wrap `TyCtxt`, for easier
access.
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Because the corresponding `Level` is `DelayedBug` and `span_delayed_bug`
follows the pattern used everywhere else: `span_err`, `span_warning`,
etc.
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And move declarative macro compilation to an earlier point in def collector, which is required for #118188.
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instead of creating them every time such attribute is used
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instead of creating a new every time `crate` or `$crate` is used
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Suggest publicly accessible paths for items in private mod:
When encountering a path in non-import situations that are not reachable
due to privacy constraints, search for any public re-exports that the
user could use instead.
Track whether an import suggestion is offering a re-export.
When encountering a path with private segments, mention if the item at
the final path segment is not publicly accessible at all.
Add item visibility metadata to privacy errors from imports:
On unreachable imports, record the item that was being imported in order
to suggest publicly available re-exports or to be explicit that the item
is not available publicly from any path.
In order to allow this, we add a mode to `resolve_path` that will not
add new privacy errors, nor return early if it encounters one. This way
we can get the `Res` corresponding to the final item in the import,
which is used in the privacy error machinery.
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A single-use closure is inlined and one unnecessary enum is removed.
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`#[cfg]`s are frequently used to gate crate content behind cargo
features. This can lead to very confusing errors when features are
missing. For example, `serde` doesn't have the `derive` feature by
default. Therefore, `serde::Serialize` fails to resolve with a generic
error, even though the macro is present in the docs.
This commit adds a list of all stripped item names to metadata. This is
filled during macro expansion and then, through a fed query, persisted
in metadata. The downstream resolver can then access the metadata to
look at possible candidates for mentioning in the errors.
This slightly increases metadata (800k->809k for the feature-heavy
windows crate), but not enough to really matter.
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This reverts commit 83453408a0ce91b9e3d3ae6e7f117b1fd28b487d.
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