Assist: desugar doc-comment
My need for this arose due to wanting to do feature dependent documentation and therefor convert parts of my doc-comments to attributes.
Not sure about the pub-making of the other handlers functions, but I didn't think it made much sense to reimplement them.
With #13552 the depencency of on the command-group crate was introduced, which also
introduced a dependency on nix. That version of nix does not build on Haiku. This
change introduces a newer version of command-group, which also updates nix from
0.22.3 to 0.26.1, which is compatible on Haiku.
Remove hover inlay tooltips, replace them with location links
Turns out we re-implemented what clients can already figure out through the use of location-links. We might want lazy resolves tooltips later on still, but for now this simplifies things again.
remove recursive 'Display' implementations
closes#13920
`@lnicola` is this the solution you were looking for?
having explicitly unimplemented methods seems preferable to apparently implemented methods that can't be called
Rename `checkOnSave` settings to `check`
Now that flychecks can be triggered without saving the setting name doesn't make that much sense anymore. This PR renames it to just `check`, but keeps `checkOnSave` as the enabling setting.
Add action to expand a declarative macro once, inline. Fixes#13598
This commit adds a new r-a method, `expandMacroInline`, which expands the macro that's currently selected. See #13598 for the most applicable issue; though I suspect it'll resolve part of #5949 and make #11888 significantly easier).
The macro works like this:
I have 2 questions before this PR can be merged:
1. **Should we rustfmt the output?** The advantage of doing this is neater code. The disadvantages are we'd have to format the whole expr/stmt/block (since there's no point just formatting one part, especially over multiple lines), and maybe it moves the code around more in weird ways. My suggestion here is to start off by not doing any formatting; and if it appears useful we can decide to do formatting in a later release.
2. **Is it worth solving the `$crate` hygiene issue now?** -- I think this PR is usable as of right now for some use-cases; but it is annoying that many common macros (i.e. `println!()`, `format!()`) can't be expanded further unless the user guesses the correct `$crate` value. The trouble with solving that issue is that I think it's complicated and imperfect. If we do solve it; we'd also need to either change the existing `expandMacro`/`expandMacroInline` commands; provide some option to allow/disallow `$crate` expanding; or come to some other compromise.
fix: generate async delegate methods
Fixes a bug where the generated async method doesn't await the result before returning it.
This is an example of what the output looked like:
```rust
struct Age<T>(T);
impl<T> Age<T> {
pub(crate) async fn age<J, 'a>(&'a mut self, ty: T, arg: J) -> T {
self.0
}
}
struct Person<T> {
age: Age<T>,
}
impl<T> Person<T> {
pub(crate) async fn age<J, 'a>(&'a mut self, ty: T, arg: J) -> T {
self.age.age(ty, arg) // .await is missing
}
}
```
The `.await` is missing, so the return type is `impl Future<Output = T>` instead of `T`
feat: add the ability to limit the number of threads launched by `main_loop`
## Motivation
`main_loop` defaults to launch as many threads as cpus in one machine. When developing on multi-core remote servers on multiple projects, this will lead to thousands of idle threads being created. This is very annoying when one wants check whether his program under developing is running correctly via `htop`.
<img width="756" alt="image" src="https://user-images.githubusercontent.com/41831480/206656419-fa3f0dd2-e554-4f36-be1b-29d54739930c.png">
## Contribution
This patch introduce the configuration option `rust-analyzer.numThreads` to set the desired thread number used by the main thread pool.
This should have no effects on the performance as not all threads are actually used.
<img width="1325" alt="image" src="https://user-images.githubusercontent.com/41831480/206656834-fe625c4c-b993-4771-8a82-7427c297fd41.png">
## Demonstration
The following is a snippet of `lunarvim` configuration using my own build.
```lua
vim.list_extend(lvim.lsp.automatic_configuration.skipped_servers, { "rust_analyzer" })
require("lvim.lsp.manager").setup("rust_analyzer", {
cmd = { "env", "RA_LOG=debug", "RA_LOG_FILE=/tmp/ra-test.log",
"/home/jlhu/Projects/rust-analyzer/target/debug/rust-analyzer",
},
init_options = {
numThreads = 4,
},
settings = {
cachePriming = {
numThreads = 8,
},
},
})
```
## Limitations
The `numThreads` can only be modified via `initializationOptions` in early initialisation because everything has to wait until the thread pool starts including the dynamic settings modification support.
The `numThreads` also does not reflect the end results of how many threads is actually created, because I have not yet tracked down everything that spawns threads.
add wrapping/checked/saturating assist
This addresses #13452
I'm not sure about the structure of the code. I'm not sure if it needs to be 3 separate assists, and if that means it needs to be in 3 separate files as well.
Most of the logic is in `util.rs`, which feels funny to me, but there seems to be a pattern of 1 assist per file, and this seems better than duplicating the logic.
Let me know if anything needs changes 😁
fix a bunch of clippy lints
fixes a bunch of clippy lints for fun and profit
i'm aware of this repo's position on clippy. The changes are split into separate commits so they can be reviewed separately
feat: Package Windows release artifacts as ZIP and add symbols file
Closes#13872Closes#7747
CC #10371
This allows us to ship a format that's easier to handle on Windows. As a bonus, we can also include the PDB, to get useful stack traces. Unfortunately, it adds a couple of dependencies to `xtask`, increasing the debug build times from 1.28 to 1.58 s (release from 1.60s to 2.20s) on my system.
Apply fallback before final obligation resolution
Fixes#13249Fixes#13518
We've been applying fallback to type variables independently even when there are some unresolved obligations that associate them. This PR applies fallback to unresolved scalar type variables before the final attempt of resolving obligations, which enables us to infer more.
Unlike rustc, which has separate storages for each kind of type variables, we currently don't have a way to retrieve only integer/float type variables without folding/visiting every single type we've inferred. I've repurposed `TypeVariableData` as bitflags that also hold the kind of the type variable it's referring to so that we can "reconstruct" scalar type variables from their indices.
This PR increases the number of ??ty for rust-analyzer repo not because we regress and fail to infer the existing code but because we fail to infer the new code. It seems we have problems inferring some functions bitflags produces.
Support multi-character punct tokens in MBE
Fixes#11497
In the context of MBE, consecutive puncts are parsed as multi-character punct tokens whenever possible. For example, `:::` is parsed as ``[Punct(`::`), Punct(`:`)]`` and shouldn't get matched to patterns like `: : :` or `: ::`.
We have implemented this behavior only for when we match puncts against `tt` fragments, but not when we match puncts literally. This PR extracts the multi-character punct handling procedure into a separate method and extends its support for literal matching.
For good measure, this PR adds support for `<-` token, which is still [considered as one token in rustc](e396186407/compiler/rustc_ast/src/token.rs (L249)) despite the placement syntax having been removed.
fix: merge multiple intersecting ranges
Fixes#13791
In `check_intersection_and_push()`, there may exist two ranges we should merge with the new one. We've been assuming there should be only one range that intersects, which lead to [this assertion](da15d92a32/crates/text-edit/src/lib.rs (L192)) to fail under specific circumstances.
Use `rustc_safe_intrinsic` attribute to check for intrinsic safety
Instead of maintaining a list that is poorly kept in sync we can just use the attribute.
This will make new RA versions unusable with old toolchains that don't have the attribute yet. Should we keep maintaining the list as a fallback or just don't care?
derive 'Hash'
clippy doesn't like that `PartialEq` is derived, and `Hash` is manually implemented. This PR resolves that by deriving the `Hash` implementation.
Moar linting: needless_borrow, let_unit_value, ...
* There are a few needless borrows that don't seem to be needed. I even did a quick assembly comparison and posted a q to stackoveflow on it. See [here](https://stackoverflow.com/questions/74910196/advantages-of-pass-by-ref-val-with-impl-intoiteratoritem-impl-asrefstr)
* removed several `let _ = ...` when they don't look necessary (even a few ones that were not suggested by clippy (?))
* some unneeded assignment+return - keep the code a bit leaner
* a few `writeln!` instead of `write!`, or even consolidate write!
* a nice optimization to use `ch.is_ascii_digit` instead of `ch.is_digit(10)`
fix: handle lifetime variables in `CallableSig` query
Fixes#13838
The problem is similar to #13223: we've been skipping non-empty binders, letting lifetime bound variables escape.
I ended up refactoring `hir_ty::callable_sig_from_fnonce()`. Like #13223, I chose to make use of `InferenceTable` which is capable of handling variables (I feel we should always use it when we solve trait-related stuff instead of manually building obligations/queries).
I couldn't make up a test that crashes without this patch (since the function I'm fixing is only used *outside* `hir-ty`, simple `hir-ty` test wouldn't cause crash), but at least I tested with my local build and made sure it doesn't crash with the code in the original issue. I'd appreciate any help to find a regression test.
* There are a few needless borrows that don't seem to be needed. I even did a quick assembly comparison and posted a q to stackoveflow on it. See [here](https://stackoverflow.com/questions/74910196/advantages-of-pass-by-ref-val-with-impl-intoiteratoritem-impl-asrefstr)
* removed several `let _ = ...` when they don't look necessary (even a few ones that were not suggested by clippy (?))
* there were a few `then(|| ctor{})` that clippy suggested to replace with `then_some(ctor{})` -- seems reasonable?
* some unneeded assignment+return - keep the code a bit leaner
* a few `writeln!` instead of `write!`, or even consolidate write!
* a nice optimization to use `ch.is_ascii_digit` instead of `ch.is_digit(10)`
This makes code more readale and concise,
moving all format arguments like `format!("{}", foo)`
into the more compact `format!("{foo}")` form.
The change was automatically created with, so there are far less change
of an accidental typo.
```
cargo clippy --fix -- -A clippy::all -W clippy::uninlined_format_args
```
Seems like these can be safely fixed. With one, I was particularly
surprised -- `Some(pats) => &**pats,` in body.rs?
```
cargo clippy --fix -- -A clippy::all -D clippy::explicit_auto_deref
```
I am not certain if this will improve performance,
but it seems having a .clone() without any need should be removed.
This was done with clippy, and manually reviewed:
```
cargo clippy --fix -- -A clippy::all -D clippy::redundant_clone
```
feat: Add an option to hide adjustment hints outside of `unsafe` blocks and functions
As the title suggests: this PR adds an option (namely `rust-analyzer.inlayHints.expressionAdjustmentHints.hideOutsideUnsafe`) that allows to hide adjustment hints outside of `unsafe` blocks and functions:
Requested by `@BoxyUwU` <3
fix: Correctly check for parentheses redundancy in `remove_parentheses` assist
This is quite a bunch of code and some hacks, but I _think_ this time it's correct.
I've added a lot of tests, most of which fail with the assist impl from #13733 :')
Complete enum variants without parens when snippets are disabled
This handles the portion of #13767 that bothered me, but I can try to work on the other parts we discussed if needed.
fix: resolve all inference vars in `InferenceResult::assoc_resolutions`
I think this fixes '#13773, ~but still haven't found repro. I'll try finding one so we can have a regression test~.
We should resolve every inference variable in `InferenceResult` after inference is done. We started recording `Substitution`s for each resolved associated items in #13725, but failed to do so which causes crash when analyzing source in IDE layer.
fix: make make_body respect comments in extract_function
Possible fix for #13621
### Points to help in review:
- Earlier we were only considering statements in a block expr and hence comments were being ignored, now we handle tokens hence making it aware of comments and then preserving them using `hacky_block_expr_with_comments`
Seems like I am not able to attach output video, github is glitching for it :(
fix: breaking snippets on typed incomplete suggestions
Possible fix for #7929
Fix the case where if a user types `&&42.o`, snippet completion was still applying &&Ok(42). Note this was fixed previously on `&&42.` but this still remained a problem for this case
Previous relevant PR: #13517
### Points to help in review:
- The main problem why everything broke on adding an extra `o` was, earlier `dot_receiver` was `42.` which was a `LITERAL` but now `42.o` becomes a `FIELD_EXPR`
- Till now `include_references` was just checking for parent of `LITERAL` and if it was a `REF_EXPR`, but now we consider `FIELD_EXPR` and traverse all of them, finally to reach `REF_EXPR`. If `REF_EXPR` is not found we just return the original `initial_element`
- We are constructing a new node during `include_references` because if we rely on `dot_receiver` solely we would get `&&42.o` to be replaced with, but we want `&&42` to be replaced with
### Output Video:
https://user-images.githubusercontent.com/49019259/205420166-efbdef78-5b3a-4aef-ab4b-d892dac056a0.mov
Hope everything I wrote makes sense 😅
Also interestingly previous PR's number was `13517` and this PR's number is `13715`, nicee
feat: allow unwrap block in let initializers
Possible fix for #13679
### Points to help in review:
- I just added a parent case for let statements and it seems everything else was in place already, so turned out to be a small fix
fix: add fallback case in generated `PartialEq` impl
Partially fixes#13727.
When generating `PartialEq` implementations for enums, the original code can already generate the following fallback case:
```rs
_ => std::mem::discriminant(self) == std::mem::discriminant(other),
```
However, it has been suppressed in the following example for no good reason:
```rs
enum Either<T, U> {
Left(T),
Right(U),
}
impl<T, U> PartialEq for Either<T, U> {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::Left(l0), Self::Left(r0)) => l0 == r0,
(Self::Right(l0), Self::Right(r0)) => l0 == r0,
// _ => std::mem::discriminant(self) == std::mem::discriminant(other),
// ^ this completes the match arms!
}
}
}
```
This PR has removed that suppression logic.
~~Of course, the PR could have suppressed the fallback case generation for single-variant enums instead, but I believe that this case is quite rare and should be caught by `#[warn(unreachable_patterns)]` anyway.~~
After this fix, when the enum has >1 variants, the following fallback arm will be generated :
* `_ => false,` if we've already gone through every case where the variants of `self` and `other` match;
* The original one (as stated above) in other cases.
---
Note: The code example is still wrong after the fix due to incorrect trait bounds.
fix: normalize projection after discarding free `BoundVar`s in RPIT
Fixes#13307
When we lower the return type of a function, it may contain free `BoundVar`s in `OpaqueType`'s substitution, which would cause panic during canonicalization as part of projection normalization. Those `BoundVar`s are irrelevant in this context and will be discarded, and we should defer projection normalization until then.
fix: only shift `BoundVar`s that come from outside lowering context
Fixes#13734
There are some free functions `TyLoweringContext` methods call, which do not know anything about current binders in scope. We need to shift in the `BoundVar`s in substitutions that we get from them (#4952), but not those we get from `TyLoweringContext` methods.
Compute data layout of types
cc #4091
Things that aren't working:
* Closures
* Generators (so no support for `Future` I think)
* Opaque types
* Type alias and associated types which may need normalization
Things that show wrong result:
* ~Enums with explicit discriminant~
* SIMD types
* ~`NonZero*` and similar standard library items which control layout with special attributes~
At the user level, I didn't put much work, since I wasn't confident about what is the best way to present this information. Currently it shows size and align for ADTs, and size, align, offset for struct fields, in the hover, similar to clangd. I used it some days and I feel I liked it, but we may consider it too noisy and move it to an assist or command.
The old value was for the old chalk-engine solver, nowadays the newer chalk-recursive solver is used.
The new solver currently uses fuel a bit more quickly, so a higher value is needed.
Running analysis-stats showed that a value of 100 increases the amount of unknown types,
while for a value of 1000 it's staying mostly the same.
Add `move_const_to_impl` assist
Closes#13277
For the initial implementation, this assist:
- only applies to inherent impl. Much as we can *technically* provide this assist for default impl in trait definitions, it'd be complicated to get it right.
- may break code when the const's name collides with an item of a trait the self type implements.
Comments in the code explain those caveats in a bit more detail.
Fix the case where if a user types `&&42.o`, snippet completion
was still applying &&Ok(42). Note this was fixed previously
on `&&42.` but this still remained a problem for this case
Don't show runnable code lenses in libraries outside of the workspace
Addresses #13664. For now I'm just disabling runnable code lenses since the ones that display the number of references and implementations do work correctly with external code.
Also made a tiny TypeScript change to use the typed `sendNotification` overload.
fix: check tail expressions more precisely in `extract_function`
Fixes#13620
When extracting expressions with control flows into a function, we can avoid wrapping tail expressions in `Option` or `Result` when they are also tail expressions of the container we're extracting from (see #7840, #9773). This is controlled by `ContainerInfo::is_in_tail`, but we've been computing it by checking if the tail expression of the range to extract is contained in the container's syntactically last expression, which may be a block that contains both tail and non-tail expressions (e.g. in #13620, the range to be extracted is not a tail expression but we set the flag to true).
This PR tries to compute the flag as precise as possible by utilizing `for_each_tail_expr()` (and also moves the flag to `Function` struct as it's more of a property of the function to be extracted than of the container).
Mega-sync from `rust-lang/rust`
This essentially implements `@oli-obk's` suggestion here https://github.com/rust-lang/rust-analyzer/pull/13459#issuecomment-1297285607, with `@eddyb's` help.
This PR is equivalent to 14 syncs (back and forth) between `rust-lang/rust` and `rust-lang/rust-analyzer`.
Working from this list (from bottom to top):
```
(x) a2a1d9954⬆️ rust-analyzer
(x) 79923c382⬆️ rust-analyzer
(x) c60b1f641⬆️ rust-analyzer
(x) 8807fc4cc⬆️ rust-analyzer
(x) a99a48e78⬆️ rust-analyzer
(x) 4f55ebbd4⬆️ rust-analyzer
(x) f5fde4df4⬆️ rust-analyzer
(x) 459bbb422⬆️ rust-analyzer
(x) 65e1dc4d9⬆️ rust-analyzer
(x) 3e358a682⬆️ rust-analyzer
(x) 31519bb39⬆️ rust-analyzer
(x) 8231fee46⬆️ rust-analyzer
(x) 22c8c9c40⬆️ rust-analyzer
(x) 9d2cb42a4⬆️ rust-analyzer
```
(This listed was assembled by doing a `git subtree push`, which made a branch, and looking at the new commits in that branch, picking only those that were `⬆️ rust-analyzer` commits)
We used the following commands to simulate merges in both directions:
```shell
TO_MERGE=22c8c9c40 # taken from the list above, bottom to top
git merge --no-edit --no-ff $TO_MERGE
git merge --no-edit --no-ff $(git -C ../rust log --pretty=format:'%cN | %s | %ad => %P' | rg -m1 -F "$(git show --no-patch --pretty=format:%ad $TO_MERGE)" | tee /dev/stderr | rg '.* => \S+ (\S+)$' --replace '$1')
```
We encountered no merge conflicts that Git wasn't able to solve by doing it this way.
Here's what the commit graph looks like (as shown in the Git Lens VSCode extension):
<img width="1345" alt="image" src="https://user-images.githubusercontent.com/7998310/203984523-7c1a690a-8224-416c-8015-ed6e49667066.png">
This PR closes#13459
## Does this unbreak `rust->ra` syncs?
Yes, here's how we tried:
In `rust-analyzer`:
* check out `subtree-fix` (this PR's branch)
* make a new branch off of it: `git checkout -b subtree-fix-merge-test`
* simulate this PR getting merged with `git merge master`
In `rust`:
* pull latest master
* make a new branch: `git checkout -b test-change`
* mess with rust-analyzer (I added a comment to `src/tools/rust-analyzer/Cargo.toml`)
* commit
* run `git subtree push -P src/tools/rust-analyzer ra-local final-sync` (this follows the [Clippy sync guide](https://doc.rust-lang.org/nightly/clippy/development/infrastructure/sync.html))
This created a `final-sync` branch in `rust-analyzer`.
In `rust-analyzer`:
* `git merge --no-ff final-sync` (this follows the [Clippy sync guide](https://doc.rust-lang.org/nightly/clippy/development/infrastructure/sync.html))
Now `git log` in `rust-analyzer` shows this:
```
commit 460128387e46ddfc2b95921b2d7f6e913a3d2b9f (HEAD -> subtree-fix-merge-test)
Merge: 0513fc02a 9ce6a734f
Author: Amos Wenger <amoswenger@gmail.com>
Date: Fri Nov 25 13:28:24 2022 +0100
Merge branch 'final-sync' into subtree-fix-merge-test
commit 0513fc02a08ea9de952983624bd0a00e98044b36
Merge: 38c98d1ff6918009fe
Author: Amos Wenger <amoswenger@gmail.com>
Date: Fri Nov 25 13:28:02 2022 +0100
Merge branch 'master' into subtree-fix-merge-test
commit 9ce6a734f37ef8e53689f1c6f427a9efafe846bd (final-sync)
Author: Amos Wenger <amoswenger@gmail.com>
Date: Fri Nov 25 13:26:26 2022 +0100
Mess with rust-analyzer just for fun
```
And `git diff 0513fc02a08ea9de952983624bd0a00e98044b36` shows this:
```patch
diff --git a/Cargo.toml b/Cargo.toml
index 286ef1e7d..c9e24cd19 100644
--- a/Cargo.toml
+++ b/Cargo.toml
`@@` -32,3 +32,5 `@@` debug = 0
# ungrammar = { path = "../ungrammar" }
# salsa = { path = "../salsa" }
+
+# lol, hi
```
## Does this unbreak `ra->rust` syncs?
Yes, here's how we tried.
From `rust`:
* `git checkout -b sync-from-ra`
* `git subtree pull -P src/tools/rust-analyzer ra-local subtree-fix-merge-test` (this is adapted from the [Clippy sync guide](https://doc.rust-lang.org/nightly/clippy/development/infrastructure/sync.html#performing-the-sync-from-clippy-to-rust-langrust), you would normally use `ra-upstream master` but we're simulating things here)
A commit editor pops up, there was no merge conflicts.
## How do we prevent this from happening again?
Like `@bjorn3` said in https://github.com/rust-lang/rust-analyzer/pull/13459#issuecomment-1293587848
> Whenever syncing from rust-analyzer -> rust you have to immediately sync the merge commit from rust -> rust-analyzer to prevent merge conflicts in the future.
But if we get it wrong again, at least now we have a not-so-painful way to fix it.
Improve goto declaration
Closes https://github.com/rust-lang/rust-analyzer/issues/13599
- goto decl now goes to assoc items of trait declarations over the items of trait implementations
- goto decl now goes to the field declaration (opposed to goto def which shows both the field decl and binding created/local being used)
- also adds back the goto definition fallback that seems to have been dropped at some point.
feat: adds hover hint to ".." in record pattern
Hovering on the "rest" pattern in struct destructuring,
```rust
struct Baz {
a: u32,
b: u32,
c: u32,
d: u32
}
let Baz { a, b, ..$0} = Baz { a: 1, b: 2, c: 3, d: 4 };
```
shows:
```
.., c: u32, d: u32
```
Currently only works with struct patterns.
Add assist to generate trait impl's
resolves#13553
This pull request adds a `generate_trait_impl` assist, which generates trait impl's for a type. It is almost the same as the one to generate impl's and I also reduced the trigger range to only outside the `RecordFieldList`. Also moved all the tests into separate test functions. A few of the old tests seemed redundant, so I didn't port them.
Fix: Handle empty `checkOnSave/target` values
This fixes a regression introduced by #13290, in which failing to set `checkOnSave/target` (or `checkOnSave/targets`) would lead to an invalid config.
[Fixes#13660]
Support multiple targets for checkOnSave (in conjunction with cargo 1.64.0+)
This PR adds support for the ability to pass multiple `--target` flags when using
`cargo` 1.64.0+.
## Questions
I needed to change the type of two configurations options, but I did not plurialize the names to
avoid too much churn, should I ?
## Zulip thread
https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frust-analyzer/topic/Issue.2013282.20.28supporting.20multiple.20targets.20with.201.2E64.2B.29
## Example
To see it working, on a macOS machine:
```sh
$ cd /tmp
$ cargo new cargo-multiple-targets-support-ra-test
$ cd !$
$ mkdir .cargo
$ echo '
[build]
target = [
"aarch64-apple-darwin",
"x86_64-apple-darwin",
]
' > .cargo/config.toml
$ echo '
fn main() {
#[cfg(all(target_arch = "aarch64", target_os = "macos"))]
{
let a = std::fs::read_to_string("/tmp/test-read");
}
#[cfg(all(target_arch = "x86_64", target_os = "macos"))]
{
let a = std::fs::read_to_string("/tmp/test-read");
}
#[cfg(all(target_arch = "x86_64", target_os = "windows"))]
{
let a = std::fs::read_to_string("/tmp/test-read");
}
}
' > src/main.rs
# launch your favorite editor with the version of RA from this PR
#
# You should see warnings under the first two `let a = ...` but not the third
```
## Screen
Helps with #13282
fix: format expression parsing edge-cases
- Handle positional arguments with formatting options (i.e. `{:b}`). Previously copied `:b` as an argument, producing broken code.
- Handle indexed positional arguments (`{0}`) ([reference](https://doc.rust-lang.org/std/fmt/#positional-parameters)). Previously copied over `0` as an argument.
Note: the assist also breaks when named arguments are used (`"{name}$0", name = 2 + 2` is converted to `"{}"$0, name`. I'm working on fix for that as well.
Update several crates to bring support for the new Tier 3 Windows tar…
`cargo t` has passed on Windows 11 with both `x86_64-pc-windows-gnu` and `x86_64-pc-windows-gnullvm` targets.
fix: check visibility of each path segment
Upon path resolution, we have not been checking if every def pointed to by each segment of the path is visible from the original module. This leads to incorrect import resolutions, in particular when one uses glob imports and names collide.
There is decent amount of changes in this PR because:
- some of our tests were not correct in terms of visibility
- I left several basic nameres tests as-is (with expect test updated) since I thought it would be nice to ensure we don't resolve defs that are not visible.
- `fix_visibility` assist relied on `Semantics::resolve_path()`, which uses the name resolution procedure I'm fixing and wouldn't be able to "see through" the items with strict visibility with this patch
The first commit is the gist of the fix itself.
Fixes#10991Fixes#11473Fixes#13252
Fix `tt::Punct`'s spacing calculation
Fixes#13499
We currently set a `tt::Punct`'s spacing to `Spacing::Joint` unless its next token is a trivia (i.e. whitespaces or comment). As I understand it, rustc only [sets `Spacing::Joint` if the next token is an operator](5b3e909075/compiler/rustc_parse/src/lexer/tokentrees.rs (L77-L78)) and we should follow it to guarantee the consistent behavior of proc macros.
Fix the length displayed for byte string literals with escaped newlines
This is a fix for the problem I reported earlier: "the length of byte strings containing escaped newlines is displayed two bytes longer when the first escaped character is a newline".
I would appreciate it if you could review the fix.
Many thanks.
Closes#13567
The length of byte strings containing escaped newlines is displayed two
bytes longer when the first escaped character is a newline.
This is due to a small bug in handling the first escaped newline in
string literals.
Closes#13567
Feat: extracted method from trait impl is placed in existing impl
**Before**
https://user-images.githubusercontent.com/1759192/183872883-3b0eafd2-d1dc-440e-9e66-38e3372f8b64.mp4
**After**
https://user-images.githubusercontent.com/1759192/183875769-87f34c7d-52f0-4dfc-9766-f591ee738ebb.mp4
Previously, when triggering a method extraction from within an impl trait block, then this would always create a new impl block for
the struct, even if there already is one. Now, if there is already an existing trait-less impl block, then it'll put the extracted method in there.
**Caveats**:
- It currently requires the target impl block to be non-empty. This limitation is because the current architecture takes a `node_to_insert_after` as reference for where to insert the extracted function. An empty impl block doesn't have such a reference node, since it's empty. It seems that supporting this requires a much larger and more complex change.
- This is my first contribution in rust, so apologies for any beginner mistakes.
internal: Migrate `ide_assists::utils` and `ide_assists::handlers` to use format arg captures (part 1)
This not only serves as making future migration to mutable syntax trees easier, it also finds out what needs to be migrated in the first place.
~~Aside from the first commit, subsequent commits are structured to only deal with one file/handler at a time.~~
This is the first of 3 PRs, migrating:
Utils:
- `gen_trait_fn_body`
- `render_snippet`
- `ReferenceConversion`
- `convert_type`
- `getter`
Handlers:
- `add_explicit_type`
- `add_return_type`
- `add_turbo_fish`
- `apply_demorgan`
- `auto_import`
- `convert_comment_block`
- `convert_integer_literal`
- `convert_into_to_from`
- `convert_iter_for_each_to_for`
- `convert_let_else_to_match`
- `convert_tuple_struct_to_named_struct`
- `convert_two_arm_bool_match_to_matches_macro`
- `destructure_tuple_binding`
- `extract_function`
- `extract_module`
- `extract_struct_from_enum_variant`
- `extract_type_alias`
- `extract_variable`
- `fix_visibility`
scip: Generate symbols for local crates.
Consider something like:
```
// a.rs
pub struct Foo { .. } // Foo is "local 1"
fn something() {
crate:🅱️:Bar::new() // Bar is "local 1", but of "b.rs"
}
// b.rs
pub struct Bar { .. } // "local 1"
```
Without this there's no way to disambiguate whether "local 1" references "Bar" or "Foo".
feat: add config for inserting must_use in `generate_enum_as_method`
Should fix#13312
Didn't add a test because I was not sure on how to add test for a specific configuration option, tried to look for the usages for other `AssistConfig` variants but couldn't find any in `tests`. If there is a way to test this, do point me towards it.
I tried to extract the formatting string as a common `template_string` and only have if-else for that, but it didn't compile :(
Also it seems these tests are failing:
```
test config::tests::generate_config_documentation ... FAILED
test config::tests::generate_package_json_config ... FAILED
```
Can you also point me to how to correct these 😅 ( I guess there is some command to automatically generate these? )
fix: make custom expr prefix completions to understand refs
Possible fix of #7929
While reviewing the postfix completion code I saw that while calling `add_custom_postfix_completions` we were doing it under the part where reference was not taken into consideration, but as we are only adding postfix completions with `Expr` scope ( [source](ba28e19b78/crates/ide-completion/src/completions/postfix.rs (L272)) )
I shifted the `add_custom_postfix_completions` call to part where references are considered
I am not sure if this is the correct fix or I am understanding the problem exactly but this small move seemed to have fixed the issue :)
feat: show signature help when calling generic types implementing `FnOnce`
This queries chalk for the `FnOnce` impl of callees and takes argument and return types from there, making generic `Callable`s available to the IDE. This makes signature help work for them, and potentially allows other features to take generic callables into account in the future.
fix: disregard type variable expectation for if expressions
Fixes#13522
As [the comment](8142d1f606/crates/hir-ty/src/infer.rs (L1087-L1090)) on `Expectation::adjust_for_branches` explains:
> If the expected type is just a type variable, then don't use an expected type. Otherwise, we might write parts of the type when checking the 'then' block which are incompatible with the 'else' branch.
Note that we already use it in match expressions. I've added tests for them too nevertheless.
Switch to upstream `positionEncoding`
Closes#13481
This drops support for the custom extension, but that's probably fine.
Draft because it's not tested yet.
fix: Test all generic args for trait when finding matching impl
Addresses https://github.com/rust-lang/rust-analyzer/pull/13463#issuecomment-1287816680
When finding matching impl for a trait method, we've been testing the unifiability of self type. However, there can be multiple impl of a trait for the same type with different generic arguments for the trait. This patch takes it into account and tests the unifiability of all type arguments for the trait (the first being the self type) thus enables rust-analyzer to find the correct impl even in such cases.
Support const generics for builtin derive macro
Fixes#13121
We have been treating every generic parameter as type parameter during builtin derive macro expansion. This patch adds support for const generics in such expansions.
feat: add multiple getters mode in `generate_getter`
This commit adds two modes to generate_getter action.
First, the plain old working on single fields.
Second, working on a selected range of fields.
Should partially solve #13246
If this gets approved will create a separate PR for setters version of the same
### Points to help in review:
- `generate_getter_from_record_info` contains code which is mostly taken from assist before refactor
- Same goes for `parse_record_fields`
- There are changes in other assists, as one of the methods in utils named `find_struct_impl` is changed, before it used to accept a single `fn_name`, now it takes a list of function names to check against. All old impls are updated to create a small list to pass their single element.
### Assumptions:
- If any of the fields have an implementation, the action will quit.
Implement invocation strategy config
Fixes https://github.com/rust-lang/rust-analyzer/issues/10793
This allows to change how we run build scripts (and `checkOnSave`), exposing two configs:
- `once`: run the specified command once in the project root (the working dir of the server)
- `per_workspace`: run the specified command per workspace in the corresponding workspace
This also applies to `checkOnSave` likewise, though `once_in_root` is useless there currently, due to https://github.com/rust-lang/cargo/issues/11007
The reason for that was that we were calculating the crate defmaps
of the file we are saving by accident causing us to get stuck waiting
on their expensive computation, while we only need the relevant crate
id.
feat: Diagnose some incorrect usages of the question mark operator
Trying to figure out how the type stuff in r-a works some more, I think I am doing this correct here but I am not quite sure :)
Bump chalk
There's a bug in current chalk that prevents us from properly supporting GATs, which is supposed to be fixed in v0.86. Note the following:
- v0.86 is only going to be released next Sunday so I'll keep this PR as draft until then.
- This doesn't compile without https://github.com/rust-lang/chalk/pull/779, which I hope will be included in v0.86. I confirmed this compiles with it locally.
Two breaking changes from v0.84:
- `TypeFolder` has been split into `TypeFolder` and `FallibleTypeFolder` (https://github.com/rust-lang/chalk/pull/772)
- `ProjectionTy::self_type_parameter()` has been removed (https://github.com/rust-lang/chalk/pull/778)
Two breaking changes:
- `TypeFolder` has been split into `TypeFolder` and `FallibleTypeFolder`
- `ProjectionTy::self_type_parameter()` has been removed
feat: Autocomplete Cargo-defined env vars in `env!` and `option_env!` (#12448)
Closes#12448
Important to know:
- Variables are taken from https://doc.rust-lang.org/cargo/reference/environment-variables.html and hardcoded as a const array.
- For the sake of simplicity I didn't include the autocompletion of `CARGO_BIN_EXE_<name>` and `OUT_DIR` since it would require information about build.rs and binary name. If somebody knows an easy way of obtaining them I can add those vars as well :)
fix: reorder dyn bounds on render
Fixes#13368#13192 changed the order of dyn bounds, violating the [contract](3a69435af7/crates/hir-ty/src/display.rs (L896-L901)) with `write_bounds_like_dyn_trait()` on render. The projection bounds are expected to come right after the trait bound they are accompanied with.
Although the reordering procedure can be made a bit more efficient, I opted for relying only on the [invariants](3a69435af7/crates/hir-ty/src/lower.rs (L995-L998)) currently documented in `lower_dyn_trait()`. It's not the hottest path and dyn bounds tend to be short so I believe it shouldn't hurt performance noticeably.
Use $crate instead of std for panic builtin_fn_macro
This should be closer to the expected output and gets rid of a few type mismatches in rustc/library
Refactor completions expansion
Depends on https://github.com/rust-lang/rust-analyzer/pull/13384
Diff is unfortunately massive as I changed the functions in the analysis module from associated ones to standalone (unfortunately without an extra commit)
Don't report build-scripts and proc-macros as metadata progress
Seems somewhat confusing to me, given `metadata` is already the step we do for workspace loading
Expand unmatched mbe fragments to reasonable default token trees
Currently we expand unmatched fragments by not replacing them at all, leaving us with `$ident`. This trips up the parser or subsequent macro calls. Instead it makes more sense to replace these with some reasonable default depending on the fragment kind which should make more recursive macro calls work better for completions.
Currently we expand unmatched fragments by not replacing them at all,
leaving us with `$ident`. This trips up the parser or subsequent macro
calls. Instead it makes more sense to replace these with some reasonable
default depending on the fragment kind which should make more recursive
macro calls work better for completions.
Add convert_named_struct_to_tuple_struct assist
Closes#11643, since the assist for converting in the other direction is already there (I based most of the implementation and all of the tests on it).
internal: Add `GenericParamList::to_generic_args` and `{TypeParam,ConstParam}::remove_default` APIs
Also fixes `generate_impl` not removing the default const param value, though it seems that no one has encountered or reported that issue yet 😅
This initially started out as refactoring `utils::generate_impl_text_inner` to understand it better (which was the reason for adding `{TypeParam,ConstParam}::remove_default`), but ended up also finding another place that needed `GenericParamList::to_generic_args`, hence its addition in here.
The main change here should be that flags are not inhereted, so
$ rust-analyzer analysis-stats . -v -v
would do what it should do
We also no longer Don\'t
fix: use `BoundVar`s from current generic scope
Fixup for #13335, addresses https://github.com/rust-lang/rust-analyzer/pull/13339#issuecomment-1266654607
Before the change in generic parameter order, `BoundVar`s for trait reference didn't change whether you are in an impl's scope or in an associated item's scope. Now that item's generic params come before its parent's, we need to shift their indices when we are in an associated item's scope.
fix: treat enum variants as generic item on their own
Fixup for #13335
It turns out I tried to merge two procedures into one utility function without noticing the incompatibility.
This time I *did* run analysis-stats on the four crates and confirmed it doesn't crash and this patch doesn't cause regression.
internal: change generic parameter order
tl;dr: This PR changes the `Substitution` for trait items and methods like so:
```rust
trait Trait<TP, const CP: usize> { // note the implicit Self as first parameter
type Type<TC, const CC: usize>;
fn f<TC, const CC: usize>() {}
}
impl<TP, const CP: usize> S {
fn f<TC, const CC: usize>() {}
}
```
- before this PR: `[Self, TP, CP, TC, CC]` for each trait item, `[TP, CP, TC, CC]` for `S::f`
- after this PR: `[TC, CC, Self, TP, CP]` for each trait item, `[TC, CC, TP, CP]` for `S::f`
---
This PR "inverts" the generic parameters/arguments of an item and its parent. This is to fulfill [chalk's expectation](d875af0ff1/chalk-solve/src/rust_ir.rs (L498-L502)) on the order of generic arguments in `Substitution`s for generic associated types and it's one step forward for GATs support (hopefully). Although chalk doesn't put any constraint for other items, it feels more natural to get everything aligned than special casing GATs.
One complication is that `TyBuilder` now demands its users to pass in parent's `Substitution` upon construction unless it's obvious that the the item has no parent (e.g. an ADT never has parent). All users *should* already know the parent of the item in question, and without this, it cannot be easily reasoned about whether we're pushing the argument for the item or for its parent.
Some additional notes:
- f8f5a5ea57: This isn't related to the change, but I felt it's nicer.
- 78977cd86c: There's one major change here other than the generic param order: Default arguments are now bound by the same `Binder` as the item in question rather than a `Binder` limited to parameters they can refer to (i.e. arguments that syntactically appear before them). Now that the order of generic parameters is changed, it would be somewhat complicated to make such `Binder`s as before, and the "full" `Binder`s shouldn't be a problem because we already make sure that the default arguments don't refer to the generic arguments after them with `fallback_bound_vars()`.
- 7556f74b16: This is split from 4385d3dcd0 to make it easy to revert if it turns out that the GATs with const generics panic is actually not resolved with this PR. cc #11878#11957
This fixes a typo first appearing in #94624
in which test-macro diagnostic uses "a" article twice.
Since I searched sources for " a a " sequences,
I also fixed the same issue in a few source files where I found it.
Signed-off-by: Petr Portnov <gh@progrm-jarvis.ru>
This commit "inverts" the order of generic parameters/arguments of an
item and its parent. This is to fulfill chalk's expectation on the
order of `Substitution` for generic associated types and it's one step
forward for their support (hopefully).
Although chalk doesn't put any constraint on the order of `Substitution`
for other items, it feels natural to get everything aligned rather than
special casing GATs.
One complication is that `TyBuilder` now demands its users to pass in
parent's `Substitution` upon construction unless it's obvious that the
the item has no parent (e.g. an ADT never has parent). All users
*should* already know the parent of the item in question, and without
this, it cannot be easily reasoned about whether we're pushing the
argument for the item or for its parent.
Quick comparison of how this commit changes `Substitution`:
```rust
trait Trait<TP, const CP: usize> {
type Type<TC, const CC: usize> = ();
fn f<TC, const CC: usize>() {}
}
```
- before this commit: `[Self, TP, CP, TC, CC]` for each trait item
- after this commit: `[TC, CC, Self, TP, CP]` for each trait item
Amalgamate file changes for the same file ids in process_changes
When receiving multiple change events for a single file id where the last change is a delete the server panics, as it tries to access the file contents of a deleted file. This occurs due to the VFS changes and the in memory file contents being updated immediately, while `process_changes` processes the events afterwards in sequence which no longer works as it will only observe the final file contents. By folding these events together, we will no longer try to process these intermediate changes, as they aren't relevant anyways.
Potentially fixes https://github.com/rust-lang/rust-analyzer/issues/13236
When receiving multiple change events for a single file id where the
last change is a delete the server panics, as it tries to access the
file contents of a deleted file. This occurs due to the VFS changes and
the in memory file contents being updated immediately, while
`process_changes` processes the events afterwards in sequence which no
longer works as it will only observe the final file contents. By
folding these events together, we will no longer try to process these
intermediate changes, as they aren't relevant anyways.
Potentially fixes https://github.com/rust-lang/rust-analyzer/issues/13236
Feature: Add assist to unwrap tuple declarations
> Implement #12923 for only tuples.
>
> Does not implement unwrapping for structs, as mentioned in the issue.
Add assist to unwrap tuples declarations to separate declarations.
```rust
fn main() {
$0let (foo, bar, baz) = (1.0, "example", String::new())
}
```
becomes:
```rust
fn main() {
let foo = 1.0;
let bar = "example";
let baz = String::new();
}
```
## Changelog
### Feature
- Added assist to unwrap tuple declarations.
feat: type inference for generators
This PR implements basic type inference for generator and yield expressions.
Things not included in this PR:
- Generator upvars and generator witnesses are not implemented. They are only used to determine auto trait impls, so basic type inference should be fine without them, but method resolutions with auto trait bounds may not be resolved correctly.
Open questions:
- I haven't (yet) implemented `HirDisplay` for `TyKind::Generator`, so generator types are just shown as "{{generator}}" (in tests, inlay hints, hovers, etc.), which is not really nice. How should we show them?
- I added moderate amount of stuffs to minicore. I especially didn't want to add `impl<T> Deref for &T` and `impl<T> Deref for &mut T` exclusively for tests for generators; should I move them into the test fixtures or can they be placed in minicore?
cc #4309
proc-macro ABI breakage still affects the tests when a new stable version
releases. Ideally we'd still be able to run the tests on the rust-analyzer
repo without having to update the proc-macro ABI, but for now just to
unblock CI we will ignore them here, as they are still run in upstream.
feat: Display the value of enum variant on hover
fixes#12955
This PR adds const eval support for enums, as well as showing their value on hover, just as consts currently have.
I developed these two things at the same time, but I've realized now that they are separate. However since the hover is just a 10 line change (not including tests), I figured I may as well put them in the same PR. Though if you want them split up into "enum const eval support" and "show enum variant value on hover", I think that's reasonable too.
Since this adds const eval support for enums this also allows consts that reference enums to have their values computed now too.
The const evaluation itself is quite rudimentary, it doesn't keep track of the actual type of the enum, but it turns out that Rust doesn't actually either, and `E::A as u8` is valid regardless of the `repr` on `E`.
It also doesn't really care about what expression the enum variant contains, it could for example be a string, despite that not being allowed, but I guess it's up to the `cargo check` diagnostics to inform of such issues anyway?
Add a new configuration settings to set env vars when running cargo, rustc, etc. commands: cargo.extraEnv and checkOnSave.extraEnv
It can be extremely useful to be able to set environment variables when rust-analyzer is running various cargo or rustc commands (such as `cargo check`, `cargo --print cfg` or `cargo metadata`): users may want to set custom `RUSTFLAGS`, change `PATH` to use a custom toolchain or set a different `CARGO_HOME`.
There is the existing `server.extraEnv` setting that allows env vars to be set when the rust-analyzer server is launched, but using this as the recommended mechanism to also configure cargo/rust has some drawbacks:
- It convolutes configuring the rust-analyzer server with configuring cargo/rustc (one may want to change the `PATH` for cargo/rustc without affecting the rust-analyzer server).
- The name `server.extraEnv` doesn't indicate that cargo/rustc will be affected but renaming it to `cargo.extraEnv` doesn't indicate that the rust-analyzer server would be affected.
- To make the setting useful, it needs to be dynamically reloaded without requiring that the entire extension is reloaded. It might be possible to do this, but it would require the client communicating to the server what the overwritten env vars were at first launch, which isn't easy to do.
This change adds two new configuration settings: `cargo.extraEnv` and `checkOnSave.extraEnv` that can be used to change the environment for the rust-analyzer server after launch (thus affecting any process that rust-analyzer invokes) and the `cargo check` command respectively. `cargo.extraEnv` supports dynamic changes by keeping track of the pre-change values of environment variables, thus it can undo changes made previously before applying the new configuration (and then requesting a workspace reload).
Fix add reference action on macros.
Before we were using the range of the corresponding expression node in the macro expanded file, which is obviously incorrect as we are setting the text in the original source.
For some reason, the test I added is failing and I haven't found a way to fix it. Does anyone know why `check_fix` wouldn't work with macros? Getting this error:
```text
thread 'handlers::type_mismatch::tests::test_add_reference_to_macro_call' panicked at 'no diagnostics', crates/ide-diagnostics/src/handlers/type_mismatch.rs:317:9
```
closes#13219
Use memmem when searching for usages in ide-db
We already have this dependency, so there is no reason not to use it as it is generally faster than std in our use case.
Allow configuration of annotation location.
I've added the ability to configure where lens annotations render relevant to the item they describe. Previously, these would render directly above the line the item is declared on. Now, there is the ability to render these annotations above the entire item (including doc comments, and attributes).
The names of the config options are up for debate, I did what seemed best to me but if anyone has better ideas let me know.
This is my first contribution so if I've missed anything please let me know.
Here's a preview of what the new option looks like:
<img width="577" alt="Screen Shot 2022-09-11 at 10 39 51 PM" src="https://user-images.githubusercontent.com/33100798/189570298-b4fcbf9c-ee49-4b79-aae6-1037ae4f26af.png">
closes https://github.com/rust-lang/rust-analyzer/issues/13218
fixup: remove unnecessary `Option`
Fixup for #13223, two things:
- `normalize_projection_query()` (and consequently `HirDatabase::normalize_projection()`) never returns `None` (well, it used to when I first wrote it...), so just return `Ty` instead of `Option<Ty>`
- When chalk cannot normalize projection uniquely, `normalize_trait_assoc_type()` used to return `None` before #13223, but not anymore because of the first point. I restored the behavior so its callers work as before.
Restructure `find_path` into a separate functions for modules and non-module items
Follow up to https://github.com/rust-lang/rust-analyzer/pull/13212
Also renames `prefer_core` imports config to `prefer_no_std` and changes the behavior of no_std path searching by preferring `core` paths `over` alloc
This PR turned into a slight rewrite, so it unfortunately does a few more things that I initially planned to (including a bug fix for enum variant paths)
New assist: move_format_string_arg
The name might need some improving.
```rust
fn main() {
print!("{x + 1}");
}
```
to
```rust
fn main() {
print!("{}"$0, x + 1);
}
```
fixes#13180
ref to #5988 for similar work
* extracted `format_like`'s parser to it's own module in `ide-db`
* reworked the parser's API to be more direct
* added assist to extract expressions in format args
fix: handle lifetime variables in projection normalization
Fixes#12674
The problem is that we've been skipping the binders of normalized projections assuming they should be empty, but the assumption is unfortunately wrong. We may get back lifetime variables and should handle them before returning them as normalized projections. For those who are curious why we get those even though we treat all lifetimes as 'static, [this comment in chalk](d875af0ff1/chalk-solve/src/infer/unify.rs (L888-L908)) may be interesting.
I thought using `InferenceTable` would be cleaner than the other ways as it already has the methods for canonicalization, normalizing projection, and resolving variables, so moved goal building and trait solving logic to a new `HirDatabase` query. I made it transparent query as the query itself doesn't do much work but the eventual call to `HirDatabase::trait_solve_query()` does.
fix: handle trait methods as inherent methods for trait-related types
Fixes#10677
When resolving methods for trait object types and placeholder types that are bounded by traits, we need to count the methods of the trait and its super traits as inherent methods. This matters because these trait methods have higher priority than the other traits' methods.
Relevant code in rustc: [`assemble_inherent_candidates_from_object()`](0631ea5d73/compiler/rustc_typeck/src/check/method/probe.rs (L783-L792)) for trait object types, [`assemble_inherent_candidates_from_param()`](0631ea5d73/compiler/rustc_typeck/src/check/method/probe.rs (L838-L847)) for placeholder types. Notice the second arg of `push_candidate()` is `is_inherent`.
Previously, annotations would only appear above the name of an item (function signature, struct declaration, etc).
Now, rust-analyzer can be configured to show annotations either above the name or above the whole item (including doc comments and attributes).
The name might need some improving.
extract format_like's parser to it's own module in ide-db
reworked the parser's API to be more direct
added assist to extract expressions in format args
fix: sort all bounds on trait object types
Fixes#13181#12793 allowed different ordering of trait bounds in trait object types but failed to account for the ordering of projection bounds. I opted for sorting all the bounds at once rather than splitting them into `SmallVec`s so it's easier to do the same thing for other bounds when we have them.
fix: Insert whitespaces into static & const bodies if they are expanded from macro on hover
Partially fixes#13143.
To resolve the other part we need to expand macros in unevaluated static & const bodies, and I'm not sure we want to. If for example it includes a call to `assert!()`, expanding it will lead to worse hover.
It seems that we've accidentally deleted the tests here couple of years
ago, and then fairly recently made a typo during refactor as well.
Reinstall tests, with coverage marks this time :-)
A Resolver *always* has a module scope at the end of its scope stack,
instead of encoding this as an invariant we can just lift this scope
out into a field, allowing us to skip going through the scope vec
indirection entirely.
feat: Implement `feature(exhaustive_patterns)` from unstable Rust
Closes#12753
Recognize Rust's unstable `#![feature(exhaustive_patterns)]` (RFC 1872). Allow omitting visibly uninhabited variants from `match` expressions when the feature is on.
This adjusts match checking to the current implementation of the postponed RFC 1872 in rustc.
fix: Parse TypePathFn with preceding `::`
e.g. `impl Fn::() -> ()`.
Fixes#13157. This was the problem, not that the path was not at the end.
I could unify the parsing of `::` of TypePathFn with that of generic arg list, but some code relies on the `::` of generic arg list to be inside it.
fix: Lower float literals with underscores
Fixes#13155 (the problem was the `PI` is defined with `_f64` suffix). `PI` is still truncated, though, because `f64` cannot represent the value with full precision.
proc_macro/bridge: send diagnostics over the bridge as a struct
This removes some RPC when creating and emitting diagnostics, and
simplifies the bridge slightly.
After this change, there are no remaining methods which take advantage
of the support for `&mut` references to objects in the store as
arguments, meaning that support for them could technically be removed if
we wanted. The only remaining uses of immutable references into the
store are `TokenStream` and `SourceFile`.
r? `@eddyb`
