5136: Split namespace maps in `ItemScope` r=jonas-schievink a=jonas-schievink
Reduces memory usage of the CrateDefMap query by ~130 MB (50%) on r-a.
I was also looking into handling glob imports more efficiently (storing scope chains instead of always duplicating everything into the glob-importing module's scope), but it seems that this already gives the most significant wins.
Co-authored-by: Jonas Schievink <jonas.schievink@ferrous-systems.com>
5101: Add expect -- a light-weight alternative to insta r=matklad a=matklad
This PR implements a small snapshot-testing library. Snapshot updating is done by setting an env var, or by using editor feature (which runs a test with env-var set).
Here's workflow for updating a failing test:
Here's workflow for adding a new test:
Note that colorized diffs are not implemented in this PR, but should be easy to add (we already use them in test_utils).
Main differences from insta (which is essential for rust-analyzer development, thanks @mitsuhiko!):
* self-updating tests, no need for a separate tool
* fewer features (only inline snapshots, no redactions)
* fewer deps (no yaml, no persistence)
* tighter integration with editor
* first-class snapshot object, which can be used to write test functions (as opposed to testing macros)
* trivial to tweak for rust-analyzer needs, by virtue of being a workspace member.
I think eventually we should converge to a single snapshot testing library, but I am not sure that `expect` is exactly right, so I suggest rolling with both insta and expect for some time (if folks agree that expect might be better in the first place!).
# Editor Integration Implementation
The thing I am most excited about is the ability to update a specific snapshot from the editor. I want this to be available to other snapshot-testing libraries (cc @mitsuhiko, @aaronabramov), so I want to document how this works.
The ideal UI here would be a code action (💡). Unfortunately, it seems like it is impossible to implement without some kind of persistence (if you save test failures into some kind of a database, like insta does, than you can read the database from the editor plugin). Note that it is possible to highlight error by outputing error message in rustc's format. Unfortunately, one can't use the same trick to implement a quick fix.
For this reason, expect makes use of another rust-analyzer feature -- ability to run a single test at the cursor position. This does need some expect-specific code in rust-analyzer unfortunately. Specifically, if rust-analyzer notices that the cursor is on `expect!` macro, it adds a special flag to runnable's JSON. However, given #5017 it is possible to approximate this well-enough without rust-analyzer integration. Specifically, an extension can register a special runner which checks (using regexes) if rust-anlyzer runnable covers text with specific macro invocation and do special magic in that case.
closes#3835
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
5120: Add a simple SSR subcommand to the rust-analyzer command line binary r=davidlattimore a=davidlattimore
Is adding the dependency on ra_ide_db OK? It's needed for the call to `db.local_roots()`
Co-authored-by: David Lattimore <dml@google.com>
5096: Fix handling of whitespace when applying SSR within macro expansions. r=matklad a=davidlattimore
I originally did replacement by passing in the full file text. Then as some point I thought I could do without it. Turns out calling .text() on a node coming from a macro expansion isn't a great idea, especially when you then try and use ranges from the original source to cut that text. The test I added here actually panics without the rest of this change (sorry I didn't notice sooner).
5097: Fix SSR prompt following #4919 r=matklad a=davidlattimore
Co-authored-by: David Lattimore <dml@google.com>
5126: Use more of FxHash* r=matklad a=lnicola
```
-rwxr-xr-x 1 me me 37917528 Jun 29 17:26 /home/me/.cargo/bin/rust-analyzer
-rwxr-xr-x 1 me me 37904056 Jun 29 18:14 /home/me/.cargo/bin/rust-analyzer
```
Saved 13.5 KB there :-).
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
5124: (Partially) fix handling of type params depending on type params r=matklad a=flodiebold
If the first type parameter gets inferred, that's still not handled correctly; it'll require some more refactoring: E.g. if we have `Thing<T, F=fn() -> T>` and then instantiate `Thing<_>`, that gets turned into `Thing<_, fn() -> _>` before the `_` is instantiated into a type variable -- so afterwards, we have two type variables without any connection to each other.
Co-authored-by: Florian Diebold <flodiebold@gmail.com>
If the first type parameter gets inferred, that's still not handled correctly;
it'll require some more refactoring: E.g. if we have `Thing<T, F=fn() -> T>` and
then instantiate `Thing<_>`, that gets turned into `Thing<_, fn() -> _>` before
the `_` is instantiated into a type variable -- so afterwards, we have two type
variables without any connection to each other.
This test needs to be updated after every change (it contains line
number), which is annoying.
It also fails on windows due to \, so it's easier to remove it.
Move unsafe_expressions to unsafe_validation.rs, replace vec tracking of
child exprs with inline macro, add debug assert to ensure tracked
children match walked children exactly
I originally did replacement by passing in the full file text. Then as some point I thought I could do without it. Turns out calling .text() on a node coming from a macro expansion isn't a great idea, especially when you then try and use ranges from the original source to cut that text. The test I added here actually panics without the rest of this change (sorry I didn't notice sooner).
5033: Order of glob imports should not affect import shadowing r=Nashenas88 a=Nashenas88
Fixes#5032
Co-authored-by: Paul Daniel Faria <Nashenas88@users.noreply.github.com>
5083: Micro-optimize lookahead in composite tokens r=matklad a=lnicola
I'm not sure that this is measurable, but can't hurt, I guess.
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
4945: do not suggest assist for return type to result in bad case r=matklad a=bnjjj
close#4826
Co-authored-by: Benjamin Coenen <5719034+bnjjj@users.noreply.github.com>
5066: Infer type for slice wildcard patterns r=flodiebold a=adamrk
Resolves https://github.com/rust-analyzer/rust-analyzer/issues/4830
The issue is just that we were never inferring the type for the wildcard `..` in slice patterns.
Co-authored-by: adamrk <ark.email@gmail.com>
5063: Store field/variant attrs in ItemTree and use it for adt.rs queries r=jonas-schievink a=jonas-schievink
Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>
There are two reasons why we don't want a generic ra_progress crate
just yet:
*First*, it introduces a common interface between separate components,
and that is usually undesirable (b/c components start to fit the
interface, rather than doing what makes most sense for each particular
component).
*Second*, it introduces a separate async channel for progress, which
makes it harder to correlate progress reports with the work done. Ie,
when we see 100% progress, it's not blindly obvious that the work has
actually finished, we might have some pending messages still.
5015: Account for updated module ids when determining whether a resolution is changed r=matklad a=Nashenas88
Fixes#4943
5027: Make Debug less verbose for VfsPath and use Display in analysis-stats r=matklad a=lnicola
5028: Remove namedExports config r=matklad a=lnicola
Fixes a warning:
```
(!) Plugin commonjs: The namedExports option from "@rollup/plugin-commonjs" is deprecated. Named exports are now handled automatically.
```
Co-authored-by: Paul Daniel Faria <Nashenas88@users.noreply.github.com>
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
5024: Simplify r=matklad a=matklad
bors r+
🤖
5026: Disable file watching when running slow tests r=matklad a=matklad
This should rid us of the intermittent test failure
https://github.com/rust-analyzer/rust-analyzer/pull/5017#issuecomment-648717983
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
4940: Add support for marking doctest items as distinct from normal code r=ltentrup a=Nashenas88
This adds `HighlightTag::Generic | HighlightModifier::Injected` as the default highlight for all elements within a doctest. Please feel free to suggest that a new tag be created or a different one used.
Fixes#4929Fixes#4939
Co-authored-by: Paul Daniel Faria <Nashenas88@users.noreply.github.com>
Co-authored-by: Paul Daniel Faria <nashenas88@users.noreply.github.com>
5004: Fix panic in split/merge import assists r=matklad a=lnicola
Fixes#4368#4905
Not sure if this is the best solution here. Maybe the `make` functions should be fallible? We generally seem to be playing whack-a-mole with panics in assists, although most of them are `unwrap`s in the assist code.
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
5002: Fix underflow panic when doctests are at top of file r=Nashenas88 a=Nashenas88
While debugging a comment at the top of a test string, I discovered that the offset calculations could underflow and panic. This only seemed to occur in tests, I assume because it's running a debug mode. The wrapping is quickly fixed later on in release mode, which is why this seems to have gone unnoticed. The new checks ensure the value is always positive or zero.
Co-authored-by: Paul Daniel Faria <nashenas88@users.noreply.github.com>
4999: SSR: Allow matching of whole macro calls r=matklad a=davidlattimore
Matching within macro calls is to come later and matching of macro calls within macro calls later still.
Co-authored-by: David Lattimore <dml@google.com>
5000: Remove RelativePathBuf from fixture r=matklad a=matklad
The paths in fixture are not really relative (the default one is
`/main.rs`), so it doesn't make sense to use `RelativePathBuf` here.
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
4900: Self variant enum res fix r=BGluth a=BGluth
Fixes#4789.
This is my first PR for this project, so it's probably worth giving it an extra close look.
A few things that I wasn't sure about:
- Is `resolve_path` really the best place to perform this check? It seemed like a natural place, but perhaps there's a better place?
- When handling the new variant `PathResolution::VariantDef`, I couldn't see an obvious variant of `TypeNs` to return in `in_type_ns` for Unions and Structs.
Co-authored-by: BGluth <gluthb@gmail.com>
4921: Allow SSR to match type references, items, paths and patterns r=davidlattimore a=davidlattimore
Part of #3186
Co-authored-by: David Lattimore <dml@google.com>
4947: Replace `impls_in_trait` query with smarter use of `CrateImplDefs` r=matklad a=jonas-schievink
`impls_in_trait` was allocating a whopping ~400 MB of RAM when running analysis-stats on r-a itself.
Remove it, instead adding a query that computes a summary `CrateImplDefs` map for all transitive dependencies. This can probably still be made more efficient, but this already reduces the peak memory usage by 25% without much performance impact on analysis-stats.
**Before**:
```
Total: 34.962107188s, 2083mb allocated 2141mb resident
422mb ImplsForTraitQuery (deps)
250mb CrateDefMapQueryQuery
147mb MacroArgQuery
140mb TraitSolveQuery (deps)
68mb InferQueryQuery (deps)
62mb ImplDatumQuery (deps)
```
**After**:
```
Total: 35.261100358s, 1520mb allocated 1569mb resident
250mb CrateDefMapQueryQuery
147mb MacroArgQuery
144mb TraitSolveQuery (deps)
68mb InferQueryQuery (deps)
61mb ImplDatumQuery (deps)
45mb BodyQuery
45mb ImplDatumQuery
```
Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>
4958: Infer FnSig via Fn traits r=flodiebold a=adamrk
Addresses https://github.com/rust-analyzer/rust-analyzer/issues/4481.
When inferring types check if the callee implements one of the builtin `Fn` traits. Also autoderef the callee before trying to figure out it's `FnSig`.
Co-authored-by: adamrk <ark.email@gmail.com>
When referring to an associated type of a super trait, we used the substs of the
subtrait. That led to the #4931 crash if the subtrait had less parameters, but
it could also lead to other incorrectness if just the order was different.
Fixes#4931.
4851: Add quickfix to add a struct field r=TimoFreiberg a=TimoFreiberg
Related to #4563
I created a quickfix for record literals first because the NoSuchField diagnostic was already there.
To offer that quickfix for FieldExprs with unknown fields I'd need to add a new diagnostic (or create a `NoSuchField` diagnostic for those cases)
I think it'd make sense to make this a snippet completion (to select the generated type), but this would require changing the `Analysis` API and I'd like some feedback before I touch that.
Co-authored-by: Timo Freiberg <timo.freiberg@gmail.com>
4937: Allow overriding rust-analyzer display version r=matklad a=oxalica
The build script invokes `git` for version information which is displayed when rust-analyzer is called with `--version`. But in build environment without `git` or when the source code is not a git repo, there's no way to manually specify the version information.
This patch respects environment variable ~`REV`~ `RUST_ANALYZER_REV` in compile time for overriding.
Related: https://github.com/NixOS/nixpkgs/pull/90976
Co-authored-by: oxalica <oxalicc@pm.me>
The task of `partition` function is to bin the flat list of paths into
disjoint filesets. Ideally, it should be incremental -- each new file
should be added to a specific fileset.
However, preliminary measurnments show that it is actually fast enough
if we just optimize this to use a binary search instead of a linear
scan.
4930: Avoid all unchecked indexing in match checking r=flodiebold a=jonas-schievink
Fixes https://github.com/rust-analyzer/rust-analyzer/issues/4416, but replaces it with a false positive.
r? @flodiebold
Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>
4903: Add highlighting support for doc comments r=matklad a=Nashenas88
The language server protocol includes a semantic modifier for documentation. This change exports that modifier for doc comments so users can choose to highlight them differently compared to regular comments.
Example:
<img width="375" alt="Screen Shot 2020-06-16 at 10 34 14 AM" src="https://user-images.githubusercontent.com/1673130/84788271-f6599580-afbc-11ea-96e5-7a0215da620b.png">
CC @woody77
Co-authored-by: Paul Daniel Faria <Nashenas88@users.noreply.github.com>
4934: Remove special casing for library symbols r=matklad a=matklad
We might as well handle them internally, via queries.
I am not sure, but it looks like the current LibraryData setup might
even predate salsa? It's not really needed and creates a bunch of
complexity.
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
We might as well handle them internally, via queries.
I am not sure, but it looks like the current LibraryData setup might
even predate salsa? It's not really needed and creates a bunch of
complexity.
4927: Better encapsulate reverse-mapping of files to cargo targets r=matklad a=matklad
We need to find a better way to do it...
CrateGraph by itself is fine, CargoWorkspace as well, but the mapping
between the two seems arbitrary...
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
4913: Remove debugging code for incremental sync r=matklad a=lnicola
4915: Inspect markdown code fences to determine whether to apply syntax highlighting r=matklad a=ltentrup
Fixes#4904
4916: Warnings as hint or info r=matklad a=GabbeV
Fixes#4229
This PR is my second attempt at providing a solution to the above issue. My last PR(#4721) had to be rolled back(#4862) due to it overriding behavior many users expected. This PR solves a broader problem while trying to minimize surprises for the users.
### Problem description
The underlying problem this PR tries to solve is the mismatch between [Rustc lint levels](https://doc.rust-lang.org/rustc/lints/levels.html) and [LSP diagnostic severity](https://microsoft.github.io/language-server-protocol/specification#diagnostic). Rustc currently doesn't have a lint level less severe than warning forcing the user to disable warnings if they think they get to noisy. LSP however provides two severitys below warning, information and hint. This allows editors like VSCode to provide more fine grained control over how prominently to show different diagnostics.
Info severity shows a blue squiggly underline in code and can be filtered separately from errors and warnings in the problems panel.
Hint severity doesn't show up in the problems panel at all and only show three dots under the affected code or just faded text if the diagnostic also has the unnecessary tag.
### Solution
The solution provided by this PR allows the user to configure lists of of warnings to report as info severity and hint severity respectively. I purposefully only convert warnings and not errors as i believe it's a good idea to have the editor show the same severity as the compiler as much as possible.
### Open questions
#### Discoverability
How do we teach this to new and existing users? Should a section be added to the user manual? If so where and what should it say?
#### Defaults
Other languages such as TypeScript report unused code as hint by default. Should rust-analyzer similarly report some problems as hint/info by default?
Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
Co-authored-by: Leander Tentrup <leander.tentrup@gmail.com>
Co-authored-by: Gabriel Valfridsson <gabriel.valfridsson@gmail.com>
Anchoring to the SourceRoot wont' work if the path is absolute:
#[path = "/tmp/foo.rs"]
mod foo;
Anchoring to a file will.
However, we *should* anchor, instead of just producing an abs path.
I can imagine a situation where, for example, rust-analyzer processes
crates from different machines (or, for example, from in-memory git
branch), where the same absolute path in different crates might refer
to different files in the end!
4876: Syntactic highlighting of NAME_REF for injections r=matklad a=ltentrup
This commit adds a function that tries to determine the syntax highlighting class of NAME_REFs based on the usage.
It is used for highlighting injections (such as highlighting of doctests) as the semantic logic will most of the time result in unresolved references.
It also adds a color to unresolved references in HTML encoding.
Follow up of #4683.
Fixes#4809.
Co-authored-by: Leander Tentrup <leander.tentrup@gmail.com>
This commit adds a function that tries to determine the syntax highlighting class of NAME_REFs based on the usage.
It is used for highlighting injections (such as highlighting of doctests) as the semantic logic will most of the time result in unresolved references.
It also adds a color to unresolved references in HTML encoding.
4860: Accept relative paths in rust-project.json r=matklad a=tweksteen
If a relative path is found as part of Crate.root_module or Root.path, interpret it as relative to the location of the rust-project.json file.
Fixes: #4816
Co-authored-by: Thiébaud Weksteen <tweek@google.com>
4882: _match.rs: improve comment formatting r=matklad a=jonas-schievink
This results in much nicer rustdoc output
Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>
It's a good idea to distinguish between absolute and relative paths at
the type level, to avoid accidental dependency on the cwd, which
really shouldn't matter for rust-analyzer service
4700: Add top level keywords completion r=matklad a=mcrakhman
This fixes the following issue: https://github.com/rust-analyzer/rust-analyzer/issues/4566.
Also added simple logic which filters the keywords which can be used with unsafe on the top level.
Co-authored-by: Mikhail Rakhmanov <rakhmanov.m@gmail.com>
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
4857: Fix invalid shorthand initialization diagnostic for tuple structs r=jonas-schievink a=OptimalStrategy
Initializing tuple structs explicitly, like in the example below, produces a "Shorthand struct initialization" diagnostic that leads to a compilation error when applied:
```rust
struct S(usize);
fn main() {
let s = S { 0: 0 }; // OK, but triggers the diagnostic
// let s = S { 0 }; // Compilation error
}
```
This PR adds a check that the field name is not a literal.
Co-authored-by: OptimalStrategy <george@usan-podgornov.com>
Co-authored-by: OptimalStrategy <17456182+OptimalStrategy@users.noreply.github.com>
