Commit Graph

3008 Commits

Author SHA1 Message Date
Rob Findley e8e5b37084 internal/lsp/cache: don't construct a new metadata graph if no changes
Change-Id: I3f074d1fd29cf7ad0323cec76154f9b2e31f7356
Reviewed-on: https://go-review.googlesource.com/c/tools/+/415494
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-06-30 18:45:36 +00:00
Suzy Mueller 8865782bc0 internal/lsp: add text edits for unkeyed literals
Add text edits that a user can accept to make the unkeyed composite
literals keyed from the inlay hints. The text edits modify all of
the unkeyed fields in a composite literal, since a mixture of keyed
and unkeyed fields are not allowed.

Change-Id: I0683fbaa5e22bc004b91c98fc09e495e797826ee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/414855
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
2022-06-30 17:08:31 +00:00
Rob Findley 1a196f0497 internal/lsp/cache: don't build symbol info for non-Go files
Our symbol query only searches Go files, so there is no point to
building (broken) symbol information for non-Go files. Doing so
introduces a lot more symbol handles that need to be tracked and walked.

Change-Id: I96dd62766d079805fcb1d16eb361adfc0c31eea1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/415199
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-30 15:34:11 +00:00
Alan Donovan b84d509d6f gopls/doc: regenerate documentation
This change should have been included in
https://go-review.googlesource.com/c/tools/+/415057
but I hastily submitted it without a CI run
thinking "how can a doc only change break something?".
Well now I know. Sorry. :(

Change-Id: Ib0fd25fddd7f9580961b44dcad032d4851684f63
Reviewed-on: https://go-review.googlesource.com/c/tools/+/415058
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2022-06-29 17:54:53 +00:00
Suzy Mueller 7743d1d949 internal/lsp: respect range for inlay hints
This is an optimization to avoid calculating inlayhints that are
not in the requested range.

Change-Id: I311f297d2998ae7d0db822eac540b1c12cae6e23
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412455
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
2022-06-28 19:21:53 +00:00
Robert Findley 0248714391 internal/lsp: add additional instrumentation around package loading
Add some additional logging to help debug golang/go#53586

For golang/go#53586

Change-Id: I0574fb01be47b265cd6e412855794bc2cb836dff
Reviewed-on: https://go-review.googlesource.com/c/tools/+/414854
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
2022-06-28 19:07:12 +00:00
Suzy Mueller e5b3324997 internal/lsp: add InlayHint regtests
Add regtests for inlay hints to verify we can turn on
and off different inlay hints.

Change-Id: Id88450c40c048b6c2544d22a0d3eadb57b70a723
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411911
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
2022-06-28 15:22:17 +00:00
Robert Findley 7404bd2ffd all: gofmt some recent file changes
Change-Id: I62d2d35275964b35032e36d6ed3c9f4a31176f91
Reviewed-on: https://go-review.googlesource.com/c/tools/+/414495
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-06-27 19:42:14 +00:00
Alan Donovan 66bbba3d58 internal/memoize: remove unused Store.generations map
This change removes an unused map, renames Store.mu, and
add minor commentary.

Change-Id: I2f064ff0daf87e0f73930bc980760a453d18e70a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/414494
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-06-27 17:33:17 +00:00
Robert Findley 56116ec015 internal/memoize: don't destroy reference counted handles
Unlike generational handles, when reference counted handles are evicted
from the Store we don't know that they are also no longer in use by
active goroutines. Destroying them causes goroutine leaks.

Also fix a data race because Handle.mu was not acquired in the release
func returned by GetHandle.

Change-Id: Ida7bb6961a035dd24ef8566c7e4faa6890296b5b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/414455
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-27 16:29:48 +00:00
Robert Findley 93a03c2c54 internal/lsp/cache: invalidate reverse closure when loading packages
When setting new metadata for a package ID, we invalidate the
corresponding type-checked packages. Whenever we invalidate a package,
we must also invalidate its reverse transitive closure. Otherwise we may
end up in a scenario where the go/types import graph does not match
gopls' view of the import graph.

Change-Id: I8db6ff3e4a722656e6dde7907e7c0470375c4847
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413683
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-24 21:40:29 +00:00
Robert Findley c36379be2b internal/lsp/cache: don't set new metadata if existing is valid
If gopls believes it has valid metadata for a package, don't set new
metadata. This is consistent with previous behavior that was changed in
CL 340851.

In principle this shouldn't matter, but in practice there are places
where gopls doesn't yet want to invalidate packages, *even though* their
metadata may have changed (such as while editing a go.mod file before
saving). In the future we should eliminate these places, but for now we
should let snapshot.clone control this invalidation.

This also reduces the number of type-checked packages we invalidate on
load.

Change-Id: I0cc9bd4186245bec401332198de0047ff37e7ec7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413681
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-06-24 21:40:14 +00:00
Robert Findley e1ec1f3230 internal/imports: use a module resolver if GOWORK is set
Previously, gopls would fall back on a gopath resolver when running
goimports from a directory containing go.work (but not go.mod). Fix this
by update the code to recognize that GOWORK also puts goimports into
module mode.

All the work to _support_ go.work had already been done, but the tests
were only passing because they were setting GO111MODULE=on explicitly
(and therefore GOMOD=/dev/null was satisfying the pre-existing check).

Also add a test for the regression in gopls.

Fixes golang/go#52784

Change-Id: I31df6f71a949a5668e8dc001b3ee25ad26f2f927
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413689
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2022-06-24 21:03:09 +00:00
Jamal Carvalho 60ca6366e6 internal/lsp: use camel case for inlay hint config fields
To properly format these field names in the vscode config ui
these fields should be camel case.

Change-Id: I3b8b8fb6371172ecb464710f7d91b9fc67e0ed42
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413684
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Jamal Carvalho <jamal@golang.org>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-24 17:24:36 +00:00
Ruslan Nigmatullin 2994e99415 internal/persistent: change map to use set/get as method names
Purely a style change, no expected behavior difference.

Change-Id: Ib882eb54537126b31d20dde65c4a517d5452a8b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413661
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-24 13:47:25 +00:00
Suzy Mueller 22ab2538d4 internal/lsp: rename viewport to range
The final LSP spec for 3.17 changed the name of ViewPort to Range
for both InlayHints and InlineValues. This manually updates just
these fields in our protocol.

Change-Id: I0303a36536016ca59c87dc45f55fadcd80e72bfc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413677
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-23 18:17:15 +00:00
Ruslan Nigmatullin 3f5f798e2a internal/lsp/cache: use persistent map for storing files in the snapshot
This on average reduces latency from 34ms to 25ms on internal codebase.

Updates golang/go#45686

Change-Id: I57b05e5679620d8481b1f1a051645cf1cc00aca5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413654
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Alan Donovan <adonovan@google.com>
2022-06-23 13:23:41 +00:00
Ruslan Nigmatullin f60e9bc48f internal/lsp/cache: use persistent map for storing gofiles in the snapshot
Use treap (https://en.wikipedia.org/wiki/Treap) as a persistent map to avoid copying s.goFiles across generations.
Maintain an additional s.parseKeysByURIMap to avoid scanning s.goFiles on individual file's content invalidation.

This on average reduces didChange latency on internal codebase from 160ms to 150ms.

In a followup the same approach can be used to avoid copying s.files, s.packages, and s.knownSubdirs.

Updates golang/go#45686

Change-Id: Ic4a9b3c8fb2b66256f224adf9896ddcaaa6865b1
GitHub-Last-Rev: 0abd2570ae9b20ea7126ff31bee69aa0dc3f40aa
GitHub-Pull-Request: golang/tools#382
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411554
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-22 21:10:11 +00:00
Suzy Mueller 871637b647 internal/lsp: add settings for inlay hints and enable
This change adds user settings for enabling inlay hints, modeled
roughly after analyzers. This will allow users to turn on specific
inlay hints that they like and leave others off.

With all of the inlay hints turned off by default, we can now enable
inlay hints.

Change-Id: Ie5dfcbbab1e0b7312eafcc4aa08cb4fe8a83fc31
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411906
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-06-22 17:08:41 +00:00
Robert Findley 4e231cb6f8 internal/lsp/cache: don't prune unreachable metadata on clone
Package metadata is small; there is no reason not to keep it around, and
pruning it on every clone is needless work.

Change-Id: I9ea73315cc6b673625f0f7defe1fd61c2e1eb123
Reviewed-on: https://go-review.googlesource.com/c/tools/+/373695
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-22 14:01:02 +00:00
Robert Findley a2de63544e internal/lsp/cache: honor the go.work for computing workspace packages
When using Go workspaces, the go.work file should be used to determine
which packages are workspace packages.

For golang/go#48929

Change-Id: I1a8753ab7887daf193e093fca5070b4cc250a245
Reviewed-on: https://go-review.googlesource.com/c/tools/+/400822
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-06-22 14:00:53 +00:00
Alan Donovan cbb8e8e923 internal/span: optimise URI.Filename to avoid allocation
This change adds a fast-path check for the common case:
"file:", lowercase, followed by a simple POSIX absolute
file name without special characters.

This function used to account for 1% of CPU on the DidChange
benchmark (and I'm sure I've seen higher fractions on other
tests--but perhaps that was before the clone optimizations?).

It was tested by adding an assertion that it agrees with the
slow path and running all our tests.

Change-Id: I15492b8a317715468870b00041bf8f6b0bb53bb2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411900
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-22 02:37:34 +00:00
Alan Donovan 63d8015eb8 internal/lsp/cache: minor simplifications to Symbols
Minor cleanups based on studying the code in preparation
for saving a persistent index:

- Remove unused error result from Symbols method.
- Remove unnecessary fields from symbolHandle.
- Add various explanatory comments.
- In workspace_symbols.go:
  - separate extract and match phases of collectSymbols clearly
  - replace symbolCollector and matchWorker types by simple parameters
  - combine loops (roots, buildMatcher)
  - move buildMatcher creation down to where it is needed.

Change-Id: Ifcad61a9a8c7d70f573024bcfa76d476552ee428
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412822
Reviewed-by: Robert Findley <rfindley@google.com>
2022-06-21 20:15:42 +00:00
Dylan Le 59bd4faed9 internal/lsp: find references to package
Update References to detect if the package is referenced and a regtest to test within and external package references.

Updates golang/go#41567

Change-Id: I607a47bf15f1c9f8236336f795fcef081db49d6a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408714
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Dylan Le <dungtuanle@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-21 19:39:47 +00:00
Jamal Carvalho a1303c83f3 internal/lsp: remove tooltip from inlay hints
The tooltip for truncated inlay hint labels is redundant
with the hover state of the target identifier. This matches
the behavior of inlay hint implementations in other languages.

Change-Id: I209054f8c65df504cae67121e3cbc3eacaf02710
Reviewed-on: https://go-review.googlesource.com/c/tools/+/413417
Run-TryBot: Jamal Carvalho <jamal@golang.org>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-21 17:15:14 +00:00
Jamal Carvalho 641b30b3f4 internal/lsp: add inlay hints for inferred type params
This will show inferred type information for generic function
call expressions.

Example:
SumNumbers<[string, int64]>(ints)

For golang/go#52343

Change-Id: I05595f236626e8fb3666af5160611e074e8265a4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412994
Reviewed-by: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Jamal Carvalho <jamal@golang.org>
2022-06-21 17:15:02 +00:00
Alan Donovan 381ac87aae internal/lsp/debug: reduce critical sections in trace
This change reduces the sizes of the critical section
in traces.ProcessEvent, in particular moving allocations
ahead of Lock. This reduces the contention according
to the trace profiler.

See https://go-review.googlesource.com/c/go/+/411909 for
another reduction in contention. The largest remaining
contention is Handle.Get, which thousands of goroutines
wait for because we initiate typechecking top down.

(Second attempt at https://go-review.googlesource.com/c/tools/+/411910,
reverted in https://go-review.googlesource.com/c/tools/+/412694.
The changes to Generation.Bind have been dropped.)

Change-Id: Ia9050c97bd12d2d75055f8d1dfcda3ef1f5ad334
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412820
Run-TryBot: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-06-17 20:37:28 +00:00
Suzy Mueller 1e14d994d8 internal/lsp: add inlay hints for composite literal types
Add inlay hints for composite literal types. This will show type
information for composite literals with no explicit types.

Example:
<struct {in, want string}>{"hello", "goodbye"}

For golang/go#52343

Change-Id: Ia1f03b82669387c864353b8033940759fa1128e7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411905
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-17 18:37:13 +00:00
Alan Donovan e9870152b0 internal/lsp/cache: symbolize in parallel
This change parallelizes the buildSymbolHandle().Get computation for
each file, with 2xGOMAXPROCS goroutines, since it is a mix of I/O (read)
and CPU (parse). (The symbolize AST walk happens in other goroutines.)

This reduces the time for the source.WorkspaceSymbols trace task
applied to kubernetes from 3981ms to 630ms (6x faster).

Change-Id: I5f1ee4afc2f6b2dd752791a30d33a21f50180a9c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412818
Reviewed-by: Robert Findley <rfindley@google.com>
2022-06-16 20:50:23 +00:00
Alan Donovan 88325aa063 internal/memoize: add trace region for Handle.run
The region name includes the type of the key, such as packageHandleKey
or actionHandleKey, so we can separate these deferred computations
into their own buckets.

Change-Id: I0359127ccf47b158f353fae2bf74ba000668a40b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412817
Run-TryBot: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-06-16 20:40:53 +00:00
Rob Findley c353b054c4 internal/lsp/cache: delete checkSnapshotLocked
Now that the entire metadata graph and workspace packages are derived
from metadata, there should be no need to validate coherency.

This results in a small improvement to didChange benchmarking (within
statistical noise).

For golang/go#45686

Change-Id: I32683e025f42d768d62864683e55d4c00146a31c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340855
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
2022-06-16 18:25:24 +00:00
Rob Findley 567c98ba1a internal/lsp/cache: don't walk URIs to invalidate metadata
Since ids is derived from metadata, we should not have to walk ids to
see which metadata is still active. Just compute metadata updates
directly.

Benchmark (didChange in k8s): ~45ms->41ms

For golang/go#45686

Change-Id: Id557ed3f2e05c903e4bb3f3f6a4af864751c4546
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340854
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-16 18:24:49 +00:00
Rob Findley dffd6452c0 internal/lsp/cache: only clone metadata if something changed
We with immutable metadata, we don't need to clone if nothing was
invalidated.

Benchmark (didChange in k8s): 65ms->45ms

For golang/go#45686

Change-Id: I6b5e764c53a35784fd8c7b43bc26361f4ee8d928
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340853
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-06-16 18:23:55 +00:00
Robert Findley 4ba3d2217f internal/lsp/cache: clone the metadata graph when clearing ShouldLoad
The Metadata type was mutated in exactly one place: when setting the
ShouldLoad bit after package loading completes. Address this by cloning
the metadata graph when clearing ShouldLoad. After this change, metadata
graphs and the data within them are immutable.

This also fixes a range-variable capture bug in load.go: previously we
were deferring a call to clearShouldLoad for the range variable scope.
After this change, we properly clear the ShouldLoad bit for all scopes.

Change-Id: I8f9140a490f81fbabacfc9e0102d9c638c7fbb37
Reviewed-on: https://go-review.googlesource.com/c/tools/+/400821
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-16 18:23:17 +00:00
Rob Findley 39d3d49260 internal/lsp/cache: use metadataGraph.Clone in snapshot.clone
Rather than updating metadata directly in snapshot.clone, build a set of
updates to apply and call metadata.Clone.

After this change, metadata is only updated by cloning, so we can
eliminate some code that works with mutable metadata.

In the next CL we'll only update the metadata if something changed, but
this is intentionally left out of this CL to isolate the change.

Benchmark (didChange in kubernetes): ~55ms->65ms, because it is now more
work to compute uris.

For golang/go#45686

Change-Id: I048bed65760b266a209f67111c57fae29bd3e6f0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340852
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2022-06-16 18:19:30 +00:00
Rob Findley 8a9207816c internal/lsp/cache: build a new metadata graph on load
Introduce a metadataGraph.Clone method that can be used to clone a
metadata graph, applying a set of updates. During clone, ids and imports
are recomputed from scratch based on the known metadata.

Also refine the check for "real" packages when determining whether a
command-line-arguments package should be kept as a workspace package: if
all other packages are invalid, but the command-line-arguments package
is valid, we should keep the command-line-arguments package.

Updates golang/go#45686

Change-Id: Iea8d4f19c1d1c5a2b0582b9dda5f9143482a34af
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340851
Reviewed-by: Alan Donovan <adonovan@google.com>
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2022-06-16 15:50:09 +00:00
Rob Findley 9f38ef7f15 internal/lsp/cache: derive workspace packages from metadata
Now that we preserve stale metadata, we can derive workspace packages
entirely from known metadata and files. This consolidates the logic to
compute workspace packages into a single location, which can be invoked
whenever metadata changes (via load or invalidation in clone).

Additionally:
 - Precompute 'HasWorkspaceFiles' when loading metadata. This value
   should never change for a given Metadata, and our view.contains func
   is actually quite slow due to evaluating symlinks.
 - Track 'PkgFilesChanged' on KnownMetadata, since we don't include
   packages whose package name has changed in our workspace.

Also introduce a few debug helpers, so that we can leave some
instrumentation in critical functions.

For golang/go#45686

Change-Id: I2c994a1e8ca05c3c42f67bd2f4519bea5095c54c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340735
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2022-06-16 15:49:38 +00:00
Alan Donovan 041035c34a Revert "internal/lsp/cache: reduce critical sections"
This reverts commit 654a14b527.

Reason for revert: my flawed understanding of the concurrency 

Change-Id: I31a35267323bb1ff4dff1d9244d3ce69c36cdda4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412694
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2022-06-16 15:42:24 +00:00
Hana (Hyang-Ah) Kim d097bc9f9d gopls/internal/vulncheck: include nonaffecting vulnerability info
This info is still useful to tell users that some required modules
have known vulnerabilities, but the analyzed packages/workspaces
are not affected.

Those vulnerabilities are missing Symbol/PkgPath/CallStacks.

Change-Id: I94ea0d8f9ebcb1270e05f055caff2a18ebacd034
Reviewed-on: https://go-review.googlesource.com/c/tools/+/412457
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2022-06-16 14:42:12 +00:00
Alan Donovan 654a14b527 internal/lsp/cache: reduce critical sections
This change reduces the sizes of the critical sections
in traces.ProcessEvent and Generation.Bind, in particular
moving allocations ahead of Lock. This reduces the contention
according to the trace profiler.

See https://go-review.googlesource.com/c/go/+/411909 for
another reduction in contention. The largest remaining
contention is Handle.Get, which thousands of goroutines
wait for because we initiate typechecking top down.

Also, add a couple of possible optimization TODO comments,
and delete a stale comment re: Bind.

Change-Id: I995a0bb46e8c9bf0c23492fb62b56f4539bc32f8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411910
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2022-06-15 15:41:53 +00:00
Ruslan Nigmatullin ed27611107 internal/lsp/cache: cache known subdirs pattern
Known subdirs change rarely and it's quite expensive to compute
a glob pattern derived from them, so cache computation result
and inherit it across generations.

Computation cost is divided ≈evenly between `sort.Sort` and
`span.URI.Filename` calls, and there is no trivial way to optimize
them away besides caching.

Benchmark (didChange in kubernetes): ~37ms->30ms

Change-Id: Idb1691c76b8ff163dc61f637f07229498888606c
GitHub-Last-Rev: cd99a9ce5c797afb5aaa9b478fcf433edd0dc03c
GitHub-Pull-Request: golang/tools#383
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411636
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-06-14 15:20:12 +00:00
Suzy Mueller ebc084af8b internal/lsp: add inlay hints count to test summary
Change-Id: Ia74f4a43a114715a6011405bf70f9dfa269c3318
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411901
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2022-06-14 14:54:03 +00:00
Suzy Mueller c15c04572c internal/lsp: enable inlay hint tests
The change to implement inlay hints has been merged, so we need to
enable the tests.

Change-Id: I47e7ab343d0ab10283caac0a3d6677dd69c7504a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411898
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2022-06-13 21:07:50 +00:00
Suzy Mueller 034398994d internal/lsp: fix error message for inlay hints
Fix the error message to describe inlay hints failure.

Change-Id: If4597bc3e513c4dce344f11f6fa92ba20e29681a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411899
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2022-06-13 21:07:40 +00:00
Alan Donovan a41fc9869a internal/lsp/cache: use [256]byte Hash instead of hex digit string
I had hoped to see a reduction in total allocation, but it does not
appear to be significant according to the included crude benchmark.
Nonetheless this is a slight code clarity improvement.

Change-Id: I94a503b377dd1146eb371ff11222a351cb5a43b7
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2022-06-13 13:05:07 +00:00
Jamal Carvalho c41ddceaa4 internal/lsp: include padding in inlay hint marker tests
The marker tests are updated to include padding values
when mapping inlay hints to text edits.

Change-Id: Ieb421088238c65b07abdad12763816d3d1e757c8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411654
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2022-06-10 19:32:04 +00:00
Jamal Carvalho 5e48d261e2 internal/lsp: add inlay hints for composite literal names
For golang/go#52343.
For golang/vscode-go#1631.

Change-Id: I8fba5ddf0bd25ba0fc20f3305ce13868f426087c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411102
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2022-06-10 19:31:56 +00:00
Jamal Carvalho 83b0675060 internal/lsp: add inlay hints for constant values
For golang/go#52343.
For golang/vscode-go#1631.

Change-Id: Iaef0beab2837502f6428767f457d1da21848fcb6
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2022-06-10 19:31:37 +00:00
Jamal Carvalho ecc1479278 internal/lsp: add inlay hints for variable types
For golang/go#52343.
For golang/vscode-go#1631.

Change-Id: I94a1b3c389d8bfaa48754e28a52ef76c29eb6ead
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2022-06-10 19:31:24 +00:00
Jamal Carvalho 65c0181b23 internal/lsp: support textDocument/inlayHint for parameter names
This change implements support for textDocument/inlayHint and
adds inlay hints for parameter names.

For golang/go#52343.
For golang/vscode-go#1631.

Change-Id: I3f989838b86cef4fd2b4076cb6340010fff7c24c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411094
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-06-10 19:31:11 +00:00
Alan Donovan 9651276d64 internal/lsp/cache: optimize Snapshot.clone
This change replaces the single large map used for snapshot.goFiles
by a map of 256 stripes, each of which becomes immutable once shared.
This optimizes the common case in which the copy is nearly identical
to the original.

We still need to visit each map entry to see whether it needs to be
deleted (which is rare) and to inherit the handle in the usual case.
This is now done concurrently.

Also, share the (logically immutable) []PackageIDs slices across
old and new snapshots. This was worth 5% of CPU and 1/3 of allocations
(all small).

Benchmark on darwin/arm64 shows a 29% reduction for DidChange.

$ go test -v ./gopls/internal/regtest/bench -run=TestBenchmarkDidChange -didchange_dir=$HOME/w/kubernetes -didchange_file=pkg/util/hash/hash.go

Before:
BenchmarkStatistics	     100	  22955469 ns/op	11308095 B/op	   47412 allocs/op
BenchmarkStatistics	     100	  23454630 ns/op	11226742 B/op	   46882 allocs/op
BenchmarkStatistics	     100	  23618532 ns/op	11258619 B/op	   47068 allocs/op

After goFilesMap:
BenchmarkStatistics	     100	  16643972 ns/op	 8770787 B/op	   46238 allocs/op
BenchmarkStatistics	     100	  17805864 ns/op	 8862926 B/op	   46762 allocs/op
BenchmarkStatistics	     100	  18618255 ns/op	 9308864 B/op	   49776 allocs/op

After goFilesMap and ids sharing:
BenchmarkStatistics          100          16703623 ns/op         8772626 B/op      33812 allocs/op
BenchmarkStatistics          100          16927378 ns/op         8529491 B/op      32328 allocs/op
BenchmarkStatistics          100          16632762 ns/op         8557533 B/op      32497 allocs/op

Also:
- Add comments documenting findings of profiling.
- preallocate slice for knownSubdirs.
- remove unwanted loop over slice in Generation.Inherit

Updates golang/go#45686

Change-Id: Id953699191b8404cf36ba3a7ab9cd78b1d19c0a2
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2022-06-10 17:57:19 +00:00
Rob Findley 697795d6a8 internal/lsp/regtest: don't run the connection on the test context
When test awaiting fails, we often fail to shut down the server because
the pipe is closed. Fix this by using a detached context for running the
connection.

Also clean up some unnecessary context arguments.

Change-Id: I535c1cc1606e44df5f8e2177c92293d57836f992
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2022-06-10 12:48:42 +00:00
Suzy Mueller ad756c73a0 internal/lsp: initial test set up for inlay hints
Set up the tests for inlay hints. We test inlay hints by converting them to text edits
and verifying the output is as we expected it.

This change does not yet deal with making sure the server
settings are correct.

Change-Id: I136f971a87bf9936fd44047d45fe0a3f03c9164e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/411095
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2022-06-09 20:27:29 +00:00
Rob Findley 1d19788894 internal/lsp/cache: always compute IsIntermediateTestVariant
It is inconsistent to only compute IsIntermediateTestVariant for
workspace packages, and could be a source of bugs. Always compute it.

Change-Id: I16f40fe44a1145a74ef77fee4b7fd813abe603cb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340732
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2022-06-09 15:02:08 +00:00
Rob Findley 4a8620f6ba internal/lsp/cache: move metadata fields to a new metadataGraph type
In preparation for making metadata immutable, move metadata-related
fields to a new MetadataGraph type. Other than instantiating this type
when cloning, this CL contains no functional changes.

For golang/go#45686

Change-Id: I7ad29d1f331ba7e53dad3f012ad7ecdae4f7d4b7
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2022-06-08 22:15:25 +00:00
Robert Findley a3d129cecf internal/lsp/cache: extract module load errors when go.work is used
When using go.work, the go command packs module-specific errors into
synthetic results corresponding to the module query ("modulepath/...").

Extract these for use in diagnostics, by packing them into a new
moduleErrorMap error type.

Fixes golang/go#50862

Change-Id: I68bf9cf4e9ebf4595acdc4da0347ed97171d637f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405259
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2022-06-08 22:04:49 +00:00
Robert Griesemer 6bfd3a440e Revert "internal: temporarily disable tests so we can land CL 410955"
This reverts commit 5ca4cc8b9a.

Reason for revert: appears insufficient to land CL 410955.

Change-Id: If7029c9a43568e210e89d473b738400f5155715e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/410995
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2022-06-08 01:09:07 +00:00
Robert Griesemer 5ca4cc8b9a internal: temporarily disable tests so we can land CL 410955
For golang/go#53279.

Change-Id: I3e0a502f8f0789ff9920af504ea8c86812bf49a1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/410956
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2022-06-08 00:38:18 +00:00
Alan Donovan 63dfc2d3a9 internal/lsp/cache: two minor optimizations
1. Avoid unnecessary intermediate map updates.
2. Avoid accumulating defers in a loop when the control is simple.

Yield: -10% CPU, -37% allocs.

Typical results:

$ go test -v ./gopls/internal/regtest/bench -run=TestBenchmarkDidChange -didchange_dir=$HOME/w/kubernetes -didchange_file=pkg/util/hash/hash.go
Before:
BenchmarkStatistics	     100	  25932206 ns/op	11684109 B/op	   75458 allocs/op
After:
BenchmarkStatistics	     100	  23294195 ns/op	11293472 B/op	   47299 allocs/op

Also, move profiling logic outside the loop so that later runs
don't overwrite earlier runs. (This doesn't appear to be a problem
in practice, presumably because the last run is the big one.)

Updates golang/go#45686

Change-Id: I538ca6bb88cc18f1eefe35d2db29a62e5190280e
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2022-06-06 21:20:40 +00:00
Alan Donovan 030812f079 internal: remove unneeded FileSets
This change replaces various uses of FileSet with either
nothing (when the parameter wasn't really needed) or token.File.

Notably, astutil.Imports was being used to extract the imports
of a file (available at ast.File.Imports), forcing a number
of wrappers to have a FileSet parameter.

Also, simplify various expressions file.Position().Line to file.Line().

Change-Id: I19fe86a18aba50352275f77ed737513744d3930c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/410366
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2022-06-06 20:47:10 +00:00
Robert Findley 76325da620 internal/lsp/progress: detach context for all progress notifications
Use a detached Context for all progress notifications. In particular,
using a detached Context for the window/workDoneProgress/create
notification avoids races where the $/cancelRequest notification and
create response cross paths, such that the client has created a progress
dialog but the server thinks that starting progress failed.

Also, as a matter of best practice don't store a context on the WorkDone
type, despite the fact that this Context is detached. Instead, only
close over a Context in the WorkDoneWriter, which requires a Context in
order to function but which implements the io.Writer interface.

The TestProgressBarErrors test should now pass reliably.

Fixes golang/go#46930

Change-Id: I0d115ed3a62de97fe545c8dc0403e7bb55f6e481
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2022-06-02 20:26:04 +00:00
Robert Findley 3dd056a8c5 internal/lsp/mod: fix broken assumptions about file base
Logic in mod.Hover relied upon ColumnMapper.TokFile being the only file
in its FileSet. Fix this to compare offsets with offsets.

Also use safetoken.InRange in semantic.go, to fix an incorrect bounds
check.

Change-Id: Ia18a0799fea1120674e3772efdf0bdb724e554e7
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2022-06-01 22:04:06 +00:00
Robert Findley 0cdf4b588d internal/lsp/source: eliminate ColumnMapper.PointSpan in favor of Pos
It turns out PointSpan was only ever used as part of an oft repeated
pattern to get a token.Pos from a protocol position. Cut out the
middle.

Change-Id: I0b2c0fc3d335e6bbd3c1ac72c6f75e2c40c60ca5
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2022-06-01 19:19:59 +00:00
Robert Findley 9d7bf95bad internal/lsp: factor out column mapper construction from content
This eliminates some duplication, and lays the groundwork for removing
the use of token.File within ColumnMapper.

Change-Id: I54fe570bfc4f7bca0da643b8727e890dc6343208
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2022-06-01 19:19:49 +00:00
Robert Findley 9e1d19b13e internal/span: eliminate TokenConverter
The TokenConverter has been trimmed down to a thin wrapper around
token.File, and can now be removed.

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2022-06-01 19:19:15 +00:00
Robert Findley dae3f4bf3c internal/lsp/diff: remove unused TokenConverter parameters
Change-Id: Icb0b4d5c2d45eafdb1f23278e3828206a7f36908
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408094
Reviewed-by: Peter Weinberger <pjw@google.com>
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Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-06-01 15:41:18 +00:00
Robert Findley de3ef4aa45 internal/lsp/source: remove workaround for newline terminated files
Eliminate the need to work around newline terminated files in
completion, by storing selection ranges as token.Pos and using an
lsppos.TokenMapper derived from the file content, which does not have
problems with newline termination.

This simplifies the completion logic, and removes the last use of
MappedRange.SpanRange, which is an inconisitent API in that it returns
positions in the compiled source, rather than edited source.

Change-Id: I65232787956325172b48fd42d85cbb598039ee5a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407889
Reviewed-by: Alan Donovan <adonovan@google.com>
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2022-06-01 15:40:59 +00:00
Robert Findley 6b760fce76 internal/lsp/source: remove ineffectual memoization in MappedRange
Due to not having a pointer receiver, memoization of the computed
MappedRange.protocolRange had no effect.

Rather than fix the memoization, just remove it since it has apparently
not affected performance significantly.

Change-Id: Ib34becef44dca4074dcc7c8af93883d9a1060f8d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408716
Reviewed-by: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-06-01 15:40:28 +00:00
Robert Findley ea608150c3 internal/lsp: use the correct converter for mapped range offsets
CL 405546 introduced a latent bug in MappedRange, because it naively
used the wrong TokenConverter to convert mapped positions to offsets.
This was detected via related clean-up work in another CL. Fix this by
passing the correct converter from MappedRange.Range. Add a test that
would have demonstrated the breakage.

More cleanup is needed here. It is subtle that MappedRange.Converter
maps the adjusted position for its start and end, and there may be some
places where this invariant has been broken over the years.

Add additional documentation and bug reports.

Change-Id: If7f177894bac1242ddcc1786e79c7559455e9291
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407887
Run-TryBot: Robert Findley <rfindley@google.com>
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2022-06-01 15:32:54 +00:00
Robert Findley 2bb78cf04e internal/lsp: add missing bug reporting, and panic during marker tests
Add additional bug reporting related to position invariants, and update
marker test runners to panic on encountered bugs.

This revealed a panic on older Go versions, where we try to create a
range for a missing package name span. Lift the check into the caller
for this case, and leave a big comment explaining that
checkForOrphanedFile probably shouldn't be so tolerant of invalid calls.

Change-Id: Ie16a07afba0f8a5682cca50ad8f04450bfa2da65
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407885
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
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2022-05-31 14:14:38 +00:00
Hana (Hyang-Ah) Kim f38573358c internal/gocommand: skip ill-formed env vars in cmdDebugStr
Fixes golang/vscode-go#2260

Change-Id: I4dbdb1d582e3b434bce9f0e923899d8af6a43f3d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408376
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-05-25 15:29:25 +00:00
Robert Findley ccb10502d1 internal/lsp/cache: invalidate metadata when parsing issues resolve
Package loading (at least via go list) fails when the import header
doesn't parse, so we need to invalidate metadata upon a state change
from non parsing->parsing. Refactor metadata invalidation to implement
this feature, add additional documentation, and avoid unnecessary work.

This change revealed a latent bug (via TestDeleteDirectory): when
statting a deleted directory failed, we could fail to invalidate any
package IDs, even those we already knew about. This bug was masked by
the somewhat complicated semantics of pkgNameChanged. The semantics of
pkgNameChanged are simplified to encapsulate any change to a
package->file association.

Also refactor the parsing API somewhat, and add a bug report if we don't
get a ParseGoFile while inspecting for metadata changes.

Update most regtests to panic upon receiving bug reports.

Fixes golang/go#52981

Change-Id: I1838963ecc9c01e316f887aa9d8f1260662281ab
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407501
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-05-23 18:14:40 +00:00
Robert Findley b62b00ff9a internal/lsp: add an option to get notified of bug reports
Our mechanism for reporting internal bugs doesn't work unless we
actually notice them. Add an undocumented option to receive showMessage
dialogs on the first bug occurring server-side.

Change-Id: I259a4c13161271c350fae06dc6ab0e1621725c92
Reviewed-on: https://go-review.googlesource.com/c/tools/+/399624
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-05-18 01:40:46 +00:00
Tim King 960b4ce5ae internal/typeparams: adds core type implementation
Adds a function for computing the core type of a type for use within x/tools.

Updates golang/go#52940

Change-Id: I91645c0b27031506be51a5f9d53b3e125e6fd1c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/406838
Run-TryBot: Tim King <taking@google.com>
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2022-05-17 21:56:59 +00:00
Robert Findley b55ed5ed4d internal/lsp/regtest: only print RPC logs if asked
Sometimes one wants to run the regtests with verbose output without
seeing the wall of RPC logs. Add a new flag to control the printing of
logs, rather than overloading testing.Verbose().

Change-Id: Iea5727e3079005d229319cbf86f67067f7c1f85d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405894
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-17 21:46:20 +00:00
Marwan Sulaiman 13bcb69cfa internal/lsp/analysis/stubmethods: recognize *ast.CallExpr
This change makes it so that the stub methods analysis can recognize
errors happening to method and function call expressions that are being
passed a concrete type to an interface parameter. This way, a method stub CodeAction will appear at the call site.

Updates golang/go#37537

Change-Id: I886d53f06a85b9e5160d882aa742bb2b7fcea139
Reviewed-on: https://go-review.googlesource.com/c/tools/+/404655
gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
2022-05-17 17:04:34 +00:00
Robert Findley facb0d30e9 internal/span: eliminate Converter and FileConverter
The only real implementation of position conversion was via a
*token.File, so refactor the converter logic to eliminate the Converter
interface, and just use a single converter implementation that uses a
*token.File to convert between offsets and positions.

This change is meant to be a zero-impact refactoring for non-test code.
As such, I abstained from panicking in several places where it would
make sense. In later CLs, once the bug reporting API lands, we can
insert bug reports in these places.

Change-Id: Id2e503acd80d089bc5d73e983215784015471f04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405546
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-05-17 16:08:12 +00:00
Robert Findley ed968f66bd internal/lsp/bug: add a package for bug reporting
The existing debug.Bug mechanism for reporting internal bugs is
insufficient for several reasons:
 - It requires a context, which is not always available.
 - By being defined in the debug package, it is subject to import
   cycles.
 - It is too complicated. Listening for bugs requires understanding the
   event package.

Replace this with a simpler 'bug' package with no dependencies, that
allows reporting, listing, and listening on internal bugs. Hopefully
this will fulfill the goal of debug.Bug, to help us track down rare
bugs.

Change-Id: I30cab58429b29bd2d944d62e94f5657e40a760fc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/399623
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-05-16 14:45:30 +00:00
Robert Findley 090b14e850 internal/lsp/regtest: make TestResolveImportCycle robust to error order
In JSON output, the Go command was only setting the Error field for one
package involved in an import cycle. As a result, TestResolveImportCycle
was dependent on the chosen package, causing flakes when the chosen
package is not deterministic.

Arguably this behavior should be fixed, both in the go command and in
gopls, but for now make the test resilient to choice by asserting on any
of the possible errors.

Add a new AnyOf expectation to support this type of assertion and tweak the
test output formatting. Also update the test to eagerly fail once the
didOpen notification has been fully processed, so that we don't have to
wait for the assertion timeout.

Updates golang/go#52904

Change-Id: Ic209d8fdcb7308c041b287a8f122c47e96d29a96
Reviewed-on: https://go-review.googlesource.com/c/tools/+/406274
Reviewed-by: Michael Matloob <matloob@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
2022-05-13 22:16:40 +00:00
Hana f918e87c18 gopls/internal/vulncheck: copy logic of govulncheck -html
reference commit: b2400d8
The latest relevant change in the code copied is CL 403075.

Change-Id: If50cb4e0096e4f33876236cf8620430e1bcfcd86
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405795
Reviewed-by: Jamal Carvalho <jamal@golang.org>
2022-05-12 21:17:31 +00:00
Hana ad497c6c68 internal/lsp/cmd: add -config option to gopls vulncheck
If -config=true, gopls vulncheck reads the package load
configuration JSON (build flags, env, tests, and later
maybe overlay info) from stdin.

And, add some logging to gopls/internal/vulncheck/command.go
that helps measuring the package loading overhead.

Update golang/go#50577

Change-Id: I5c1ce145b07f2bed03911613f42c09a3d6be6c28
Reviewed-on: https://go-review.googlesource.com/c/tools/+/404575
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-12 21:16:26 +00:00
Nooras Saba 6eb3de266b internal/lsp/analysis: fix a doc comment typo
Fixes the grammar

Updates #50262

Change-Id: I8bc524b26d6cbeda3e626d0e83601529cbf7ff6e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405540
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-11 23:42:05 +00:00
Robert Findley 728485ffcb gopls/internal/regtest: add a test for using staticcheck with generics
For golang/go#52159

Change-Id: I08120331b7f5c9eb06feac0d0eeb76a9a7b629df
Reviewed-on: https://go-review.googlesource.com/c/tools/+/399914
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Reviewed-by: Dylan Le <dungtuanle@google.com>
2022-05-11 20:19:40 +00:00
Alan Donovan 93852cb65b internal/lsp: fix source.CompareDiagnostic asymmetry
In passing I noticed that this three-way comparison
is not (anti)symmetric. Such comparisons should consist
of a list of pairs of tests of this form:

  if x.key1 < y.key1 { return -1 }
  if x.key1 > y.key1 { return +1 }
  ...key2, etc...
  return 0

Also in passing:
- simplify panic-proof debug string function.
- augment doc comment of (*Server).beginFileRequest

Change-Id: Idcd0844ea4e96fc2dee5bbc270f5a200b5c27aa0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405480
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2022-05-11 17:43:03 +00:00
Nooras Saba 28c754d415 internal/lsp/analysis: analyzer for //go:embed directive
This CL adds a new analyzer for //go:embed directive, which
checks for the "embed" import.

Along with it, it improves doc for analysistest.Run for
comments of the the form  "//...// want..." or
 "//...// want..."

 Updates #50262

Change-Id: I60ef0ab740feadd4fff3a4d758123b27ceda0bc6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/400854
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Nooras Saba‎ <saba@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-05-11 14:31:28 +00:00
Hana (Hyang-Ah) Kim 033cbfc76d internal/typeparams: run go generate with go1.18.2
And fix a minor issue in copytermlist.go --

copytermlist.go replaces type names from go/types with
qualified type names. Use of token.NoPos (filled with
ast.NewIdent) however confuses the go/format printer.
As a result, while transforming

  func (x *term) includes(t Type) bool

to

  func (x *term) includes(t types.Type) bool

go/format printer failed to compute the end position of
the parameter list, concluded RPAREN should be in a
different line from the parameter list, added a comma,
and printed

  func (x *term) includes(t types.Type,) bool

Reuse the replaced node's position instead. (not 100%
correct, but better than NoPos)

Change-Id: Ia34e11562cc80c68dcf4b921ffffd926971c2215
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405536
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-11 13:38:50 +00:00
Robert Findley bc0e26ea12 internal/typeparams: remove examples in favor of x/exp/typeparams
The internal/typeparams directory contains an initial draft of the
documentation later published under the golang.org/x/exp/typeparams
module. Remove this draft to avoid confusion.

Change-Id: I1f40468f99c0d2885e8fc380c75669f654ba971e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405260
Reviewed-by: Alan Donovan <adonovan@google.com>
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2022-05-10 12:58:44 +00:00
Robert Findley d303668635 internal/lsp/cache: use cached parsed files for symbols, if available
Optimize building the symbol index for a file, in two ways:
 - use the cached full parse tree, if it already exists
 - if it doesn't exist, optimize parsing by skipping both comments and
   object resolution, which aren't necessary for symbols

This results in around 3x faster initial indexing of symbols. In my
manual testing, indexing of Kubernetes went from 16s->5s, and indexing
of x/tools went from 2.4s->700ms.

Also fix a typo in gopls/internal/regtest/bench/bench_test.go.

Fixes #52602

Change-Id: I0893e95410be96e94e5e9dee7a3aab30b59c19c5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403679
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2022-05-09 17:04:06 +00:00
Robert Findley 0fb1abf25a internal/lsp: factor out go/token wrapper into a safetoken package
This avoids an import cycle that prevented these wrappers from being
used in the lsppos package.

Change-Id: I9eedd256db983dfcf962edba39e3d4f3a1aabdeb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403680
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2022-05-09 17:03:37 +00:00
Robert Findley cde25b3a5f internal/lsp/lsppos: add helpers for mapping token positions
For use-cases that work only with token.Pos and protocol.Position, the
span package is unnecessarily indirect, and inefficient. It also loses
information about newline termination, and handles positions within CRLF
line endings incorrectly.

The lsppos package was written to bypass this complexity, but had
limited use and lacked tests.

Add tests, and an wrapper API that operates on token.Pos. Also fix
source.TestTokenOffset to not panic, and add a temporary exemption of
the new token.Offset usage.

This change also fixes position calculation in the case of empty file
content. The mapper now finds position (0, 0) at offset 0 of an empty
file.

Change-Id: I639bd3fac78a127b1c8eddad60b890449901c68c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403678
Reviewed-by: Alan Donovan <adonovan@google.com>
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2022-05-09 17:02:03 +00:00
Hana 22b709631a internal/lsp/cmd: change vulncheck to directly call the hook
Instead of invoking the command through the LSP custom command,
call the vulncheck command hook directly. That reduces the extra
overhead of bringing up the full gopls server & package loading.
The vulncheck hook loads packages again any way, so the benefit
of running the check inside gopls's custom command framework
is not huge any more.

Still `gopls vulncheck` is useful - editors don't need to install
another binary for vulncheck feature, and it will output the
result in the format easier to handle than what `govulncheck`
currently offers.

Updates golang/go#50577

Change-Id: Ia21e6d7e0c37c4a1b02dc8bbca860143524c3d1b
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2022-05-06 16:33:28 +00:00
Robert Findley d7e01c038e internal/lsp/source/completion: use typeutil.Map for short-circuiting
While working on golang/go#52715, I discovered an infinite recursion in
gopls' completion logic: eachField assumes a finiteness of type pointers.

It is almost certainly a go/types bug that type-checked types expand
infinitely, but nevertheless we should use the more accurate
typeutil.Map for short-circuiting our search.

Change-Id: Ib1c7125e624f42882869acd4e0476e317d4da056
Reviewed-on: https://go-review.googlesource.com/c/tools/+/404335
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2022-05-06 16:24:14 +00:00
Suzy Mueller 30fbd19e84 internal/lsp: fix fillstruct for structs with unsafe.Pointer
Provide a default value for unsafe.Pointer in fillstruct.

Fixes golang/go#52640

Change-Id: I10a1878fbf53b082f83f44e0ba2788ead14439d6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403535
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Reviewed-by: David Chase <drchase@google.com>
2022-05-05 17:08:12 +00:00
Alan Donovan 0ebacc111e internal: remove pre-go1.12 conditionally compiled files
Change-Id: I496ad24654990341eae9508587e950abde05b540
Reviewed-on: https://go-review.googlesource.com/c/tools/+/404334
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Reviewed-by: Bryan Mills <bcmills@google.com>
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2022-05-05 16:48:28 +00:00
Alan Donovan 45c8a71312 internal/tool: implement structured help command
'gopls help cmd...' is redirected to 'gopls cmd... -h'.
The tool.Run operation for each subcommand already has
logic to show the usage message when it parses a -h flag.

Examples:
   $ gopls help
   $ gopls help remote
   $ gopls help remote sessions

Fixes golang/go#52598

Change-Id: I5135c6e7b130d839f880d0613534ac08de199bcf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403677
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2022-05-04 22:58:41 +00:00
Alan Donovan 4911e4af7d internal/testenv: remove darwin/arm case from NeedsGoBuild
This function was derived from internal/testenv.HasGoBuild
in the standard library, which has since been updated
(in https://go-review.googlesource.com/c/go/+/260719)
to permit darwin/arm64 builds.

Change-Id: Ifc793b52b65ee3eedb2f41fbcbfbe36a20cfdbcc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403795
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-04 20:40:54 +00:00
Robert Findley 556c550a38 internal/lsp/cache: invalidate packages that have added files
When a file is new or its package name has changed, we should invalidate
all packages for files in the current directory, not just packages
previously containing the file.

Fixes golang/go#52500

Change-Id: I9fc9857a7abcd4e730068871c899d274e1736967
Reviewed-on: https://go-review.googlesource.com/c/tools/+/401795
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2022-05-02 22:20:22 +00:00
Robert Findley 4a3fc2182a internal/lsp: only linkify urls with http, https, and ftp schemes
Fixes golang/go#43990

Change-Id: I0ea26d521b2432238b05c26bfaccef6fc773dcf2
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2022-05-02 22:00:12 +00:00
Robert Findley aaffface24 internal/lsp/source: avoid panic in HoverIdentifier
Fixes golang/go#52211

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2022-04-29 18:06:40 +00:00
Muir Manders b44fad8412 lsp/completion: fix func literals with type params
Give placeholders for type params in func literal completions. For
example:

    func foo[T any](func(T) T) {}
    foo(<>)

Will now give "func(<T>) <T> {}" where <> denotes a placeholder.

Change-Id: Iadde73ed6b88e1410c28dfa33a20ab6a51235c93
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2022-04-26 14:19:52 +00:00
Muir Manders 5bb9a5ecb1 lsp/completion: fix literal completions with type params
In cases like:

    type foo[T any] struct{}
    func bar[T any](foo[T]) {}

    bar[int](<A>)
    bar(<B>)

At <A> we will now offer "foo[int]{}". At <B> we will now offer a
snippet "foo[<T>]{}" which lets the user fill in the type arg.

Note that we have no knowledge of type inference, so you can be left
with superfluous type args after completion.

Change-Id: Ia7d63284f3317d9367864fdae3e3f9ae68fdff1a
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2022-04-26 02:30:39 +00:00
Muir Manders 0941294088 lsp/completion: further improve generic func arg ranking
In cases like:

    func foo[T int | string](T) {}
    foo[int](<>)

Previously at <> we would favor int and string candidates. This is
because go/types doesn't instantiate foo in this case (for some
reason). Work around the issue by using types.CheckExpr to re-check
the *ast.CallExpr.Fun. CheckExpr seems to do a better than a full type
check in the face of errors.

Updates golang/go#52291
Updates golang/go#52503

Change-Id: Ide436428f3232db2e06ea3cc22ea250edbf28685
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2022-04-26 02:29:50 +00:00
Robert Findley c9035635c7 internal/lsp/cache: don't cache parsed files when checking for metadata
changes

In principle, we should only parse through the cache when in workspace
mode, else we risk pinning AST in memory that we'll never need.
Alternatively: when unsure we should default to NOT parsing through the
cache.

For now, just update the logic to check for metadata changes to not
memoize its result.

Change-Id: I200af9ffb3353ba8065e46100a588dce6239dc66
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2022-04-25 23:52:26 +00:00
Dylan Le 559469ae16 internal/lsp: render package documentation when hovering over a package import
Update FindHoverContext to retrieve & render package documentation for a hovered package. Add a regtest for this hovering feature.

Updates golang/go#51848

Change-Id: If57396d59be9c4cf7e09b64e39832de6f996c7ca
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2022-04-25 17:29:41 +00:00
Muir Manders fa7afc95f2 lsp/completion: improve generic func arg ranking
In cases like:

    func foo[A int|string](a A) {}

    foo[_](<>)

We now prefer ints and strings at <> by matching against the type
constraint. Note that even if "_" is replaced with "int", we still
prefer strings since the type checker doesn't seem to want to
instantiate foo unless the params check out.

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2022-04-22 20:11:24 +00:00
Robert Findley b22f048f6f internal/jsonrpc2*: remove usage of golang.org/x/xerrors
As of golang/go#50827, gopls no longer needs to build at Go 1.12. This
was the only reason to continue using xerrors in the jsonrpc2 libraries.

Remove this usage as a step toward eliminating the xerrors dependency
from x/tools.

For golang/go#52442

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2022-04-20 16:10:40 +00:00
Robert Findley 37590b385d gopls: remove usage of golang.org/x/xerrors
As of golang/go#50827, gopls no longer supports building at 1.12, and so
usage of golang.org/x/xerrors can be replaced with the native support for
error wrapping introduced in Go 1.13.

Remove this usage as a step toward eliminating the xerrors dependency
from x/tools.

For golang/go#52442

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2022-04-20 15:33:22 +00:00
Michael Matloob 5bb9c48e96 x/tools/go/packages: on Go 1.19+, explicitly ask for -json fields needed
This change uses the new feature on the go command to explicitly ask
for needed fields on the JSON output to ask for needed fields. Not
requesting most of those fields doesn't make as much of a difference,
but being able to skip Deps and Stale should add decent gains in most
cases.

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2022-04-19 17:08:06 +00:00
Bryan C. Mills b7d757405f internal/lsp/protocol: avoid replying with non-nil interface values in case of error
The JSON-RPC 2.0 protocol requires that responses objects
have either a "result" or an "error", but not both.
In Go, this corresponds to a non-nil result interface value or a
non-nil error.

However, the generated wrappers for the LSP protocol were passing
non-nil values for both in case of error, due to passing typed-nil
pointers as (non-nil) interfaces (see
https://go.dev/doc/faq#nil_error).

This change fixes the generator to explicitly pass only one or the
other, and re-runs the generator at the existing commit.

For golang/go#49387
For golang/go#46520

Change-Id: I582b52820bdac15d9f947e8d6c1e9daa70c53e40
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2022-04-13 01:06:48 +00:00
Bryan C. Mills a22008757f internal/lsp/protocol: ignore reply values with non-nil errors in jsonrpc2_v2 adapters
The documentation for jsonrpc2.Replier states that
“[i]f err is set then result will be ignored.”

jsonrpc2_v2 documents no such affordance, and the JSON-RPC 2.0
protocol explicitly requires that the result “MUST NOT exist if there
was an error invoking the method.”

Although CL 388600 already avoids returning values in case of error
(which may also help with escape analysis and/or allocation
efficiency), it seems simplest and least confusing to make the
semantic difference between the jsonrpc2.Handler and
jsonrpc2_v2.Handler explicit in the code.

For golang/go#46520.

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2022-04-12 20:21:55 +00:00
Russ Cox d5f48fca53 all: gofmt
Gofmt to update doc comments to the new formatting.

(There are so many files in x/tools I am breaking up the
gofmt'ing into multiple CLs. This is the leftovers.)

For golang/go#51082.

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2022-04-12 17:53:17 +00:00
Russ Cox 2bbdb7a52e gopls, internal/lsp: gofmt
Gofmt to update doc comments to the new formatting.

(There are so many files in x/tools I am breaking up the
gofmt'ing into multiple CLs.)

For golang/go#51082.

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2022-04-12 17:41:31 +00:00
Robert Findley b2552ef554 internal/lsp: run go mod vendor exclusively to avoid file contention
Running go mod vendor can result in vendor/modules.txt being transiently
deleted while it is being updated. On Windows this introduces potential
problems with file locking, if modules.txt is being read by another go
process, such as an ongoing package load.

Change the command to use RunGoCommandPiped, which executes serially
within the gopls process.

For golang/go#49646

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2022-04-11 22:06:59 +00:00
Robert Findley 9e788ee169 internal/lsp/fake: consider mtime when polling for file changes
When polling for on-disk file changes, we must detect changes even if
there is no change in the file since the last polling.

The reason for this is that there could have been intermediate changes
to the file that affected our calculations, and those calculations must
be invalidated.

For golang/go#51930

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2022-04-11 22:00:47 +00:00
Robert Findley 7cc24c2ba3 gopls: upgrade staticcheck to v0.3.0
Upgrade staticcheck to v0.3.0 to pick up support for generics. Since
this version only supports Go 1.17+, increase the version at which we
install staticcheck to 1.17 (from 1.15). This change is likely to cause
confusion for users on Go 1.16, so show a warning when setting
the "staticcheck" option to an unsupported value. Slightly refactor our
setting of options along the way.

Fixes golang/go#52159

Change-Id: Id9b4cee340e31988c64ca712d98573343aaf5848
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2022-04-07 14:59:24 +00:00
pjw 1f763dfd2e internal/lsp: add semantic tokens for arrows in declarations
Fixes: golang.org/#52024

Change-Id: Ib79a839f9bdeaef1250925add69dea3ae32e1cae
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2022-04-07 14:52:22 +00:00
Peter Weinberger 74cea6e8cb internal/imports: ignore some line directives
This is a minimal fix for the reported panic. The existing code
used FileSet.Position() where it should have used FileSet.PositionFor(, false).

gopls does this in lots of places; each use of Position() needs to
be thought about.

x/tools/go/ast/astutil/import.go:273,274 is another example.

Fixes: golang/go#51916

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2022-04-06 14:24:15 +00:00
Suzy Mueller 37acb39970 internal/lsp: run vulncheck in specified dir
The directory for the vulncheck command is passed
as an argument. Use the specified directory
in the configuration.

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2022-04-05 17:18:24 +00:00
Dan Kortschak 4077921f14 all: fix spelling
Change-Id: I13cf73d7e043dda1a06c28bb09e413a76a68df1f
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2022-04-04 19:50:34 +00:00
Dylan Le ff66cbef33 internal/lsp: remove unused parameters from moduleAtVersion
Change-Id: I16ed074188fa5f670894778a89cea1a500ec5c7f
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2022-04-04 16:32:51 +00:00
Pontus Leitzler 153e30b3c7 internal/lsp/lsprpc: only propagate explicit GOWORK when using remote
When using gopls remote, existing go env vars are injected in the
initialize message. Setting GOWORK explicitly will impact cmd/go
invocations, for example "go list" during package load. The reason it
impacts is that gopls manually sets PWD to fix paths returned by cmd/go
if the working directory is inside a symlinked directory.

By only propagate GOWORK when it is explicitly set we will ensure that
the behavior is the same when running with or without remote.

See golang/go#51823.

Fixes golang/go#51825

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2022-04-01 20:25:27 +00:00
hiroebe cda13e227d internal/lsp: fix incorrect line and start of semantic tokens
Current implementation returns incorrect result when some of the items are skipped, because positions could be relative to a skipped item. Instead, each position must be relative to the previous item added to the result.

Change-Id: I3c1a68d37bf0c9cfc1bccfe6f76c25b536224293
GitHub-Last-Rev: 6eedc7cbcc27f47ed5742b340f4438291ab70863
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2022-03-31 23:32:26 +00:00
Charlie Vieth b9a48075ea internal/gopathwalk: remove unnecessary call to os.Lstat
internal/gopathwalk.walk remove an unnecessary call to os.Lstat when
checking if a symlink should be traversed. And remove a call to
filepath.EvalSymlinks that should be unnecessary as we are using
os.Stat to compare files.

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2022-03-31 05:33:07 +00:00
Hana 54af36eca2 internal/lsp: handle invalid URL args in command params
beginFileRequest returns a nil error when file request url is
not a valid file url format. This is reported with a separate 'ok'
boolean return value.

This bug caused custom gopls commands to return success with
an empty result, instead of reporting the problem as an error.

Change-Id: I8eed39368087fa9928bcc68853225ea432f500d2
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2022-03-25 15:45:26 +00:00
Robert Findley 707beb0c63 internal/lsp/source: descend into fields and field lists in qualifyExpr
We do a lot of gymnastics to format var types, working around the lack
of alias tracking in go/types. As part of this, we clone and qualify
expressions. In this case, we were not qualifying identifiers that were
contained within fields or field lists.

Fix this by updating our expression traversal to include *ast.Field and
*ast.FieldList.

Fixes golang/go#50539

Change-Id: I6531c6a51aa402bd784778b8bedaa3dccee75af0
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2022-03-25 15:26:50 +00:00
Hana 1e5ae8399a internal/lsp/command: remove unnecessary json struct tag
Different naming style for Vuln type is unnecessary.
And, we can safely assume that ID is not empty.

Change-Id: Ifd43b671c814796af0110bad05642187bb1ea655
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2022-03-24 22:38:08 +00:00
Hana b7db7eb670 internal/lsp/cmd: add vulncheck command
Usage: gopls vulncheck <package_pattern>

It prints json-encoded command.VulncheckResult in stdout.

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2022-03-24 22:38:00 +00:00
cuishuang 78ff15e680 tools: fix some typos
Change-Id: Iaad847631b9d5ee40558fcf9d51f4dfa99600e6b
GitHub-Last-Rev: 6fcb64f8d9a093e7bd949e5d28bd1176c27005c0
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-24 22:24:35 +00:00
Robert Findley 4adadedf93 internal/lsp/source: handle empty strings in directoryFilters
Avoid a panic when a directoryFilters entry is empty.

Fixes golang/go#51843

Change-Id: I50948894ce60d83441c3fc698c2e7d80d1d2b50e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/395675
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-24 21:16:24 +00:00
Robert Findley 2536df952b internal/lsp/source: include builtin name in hovered signature
Make builtin hover consistent with signatureHelp by reusing the
BuiltinSignature function. To simplify this, just precompute the builtin
signature. In later CLs we can pre-compute all signatures and eliminate
the signatureSource indirection.

Fixes golang/go#51811

Change-Id: I1babe64ba41f636bf455074a23ad6dac5539fb89
Reviewed-on: https://go-review.googlesource.com/c/tools/+/395294
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-24 20:26:13 +00:00
Hana cd31eaad03 internal/lsp/command: add RunVulncheckExp
This is a command that runs govulncheck-like analysis.
This is highly experimental and can change any time,
so we mark it with the "Exp" suffix. Once the interface
becomes stable, we will rename this command.

It returns VulncheckResult that can be encoded as
a JSON message. The result includes all potentially
affecting vulnerabilities, and sample traces.

This feature is currently available only when gopls
is compiled with go1.18. Otherwise, the command will
return an error.

Updates golang/go#50577
Updates golang/vscode-go#2096

Change-Id: Ia37b0555f7bf98760292c9f68e50fb70dd494522
Reviewed-on: https://go-review.googlesource.com/c/tools/+/395576
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Reviewed-by: Jonathan Amsterdam <jba@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-24 19:25:58 +00:00
Hana 4737f45953 internal/lsp/command: add VulncheckArgs/Result types
And move types defined in gopls/internal/vulncheck
to internal/lsp/command so VulncheckResult can use them.

Another approach considered is to encode Vuln as a
json raw message. However, presenting the data structure
in gopls api documentation is too nice to give up.

Updates golang/vscode-go#2096
Updates golang/go#50577

Change-Id: I8587d19f9c47cf786dacaae8cfe1727c77cda711
Reviewed-on: https://go-review.googlesource.com/c/tools/+/395575
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-03-24 19:25:44 +00:00
Robert Findley 9814b1bf69 gopls: update settings link to code lenses
Make the change from CL 334209 in the source.

Change-Id: I923d857b77552d6c8d100ce97b6b86f29fbc4934
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393857
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gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-23 18:02:45 +00:00
Muir Manders 1428e83b47 lsp/completion: fix bogus generic func conversion
For example:

    func foo[A int | float64](a A) A { return a }

    var _ int = fo<>

Previously at <> we would complete to "int(foo[A int|float64](a A))".
We added the int() type conversion because the returned type param A
was convertible to the expected "int" (i.e. both "int" and "float64"
can be converted). This is a premature suggestion, though, so fix by
suppressing such type conversions for type parameters.

Fixes golang/go#51780.

Change-Id: I63e3bd401a4d9927b9261659812c521c02e33d94
Reviewed-on: https://go-review.googlesource.com/c/tools/+/394016
Run-TryBot: Muir Manders <muir@mnd.rs>
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Reviewed-by: Robert Findley <rfindley@google.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-22 17:37:31 +00:00
Muir Manders cbdab0337f lsp/completion: fix bogus type param candidate
In this example:

   func foo[A []int | []float64]() {}

   foo[<>]

When completing at <> you were getting the creative candidate
"[]int | []float64". This came from some code that makes the expected
type available as a candidate if it wouldn't otherwise be found by a
lexical search. I tweaked the code in this case to instead look at
each structural type in the type constraint rather than the constraint
as a whole. In the above example you now get the candidates "[]int"
and "[]float64".

Change-Id: Ib8e422df3009cb4253ec66005b4a53851564c4e1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/394015
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Reviewed-by: Robert Findley <rfindley@google.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-22 17:37:20 +00:00
Muir Manders 3a6cbd67dd lsp/completion: improve completion for func type params
Now when instantiating a generic function, we prefer type names that
are assignable to the corresponding constraint. For example:

    func foo[A int|string]() {}

    foo[<>]()

At <> we prefer the type names "int" and "string". Previously we had
no preference at all.

Updates golang/go#51782.

Change-Id: I7ed39ffa2bc4c63e9d320f47a58e139251712bb3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/394014
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Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-22 17:36:59 +00:00
Robert Findley 86b02b36c4 internal/lsp/cache: check for nil WorkFile.Go
Fixes golang/vscode-go#2121

Change-Id: Icf44c8bb4079c0bcba83a9512f939260bbb5b6de
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393856
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-21 13:26:21 +00:00
Robert Findley 5ea13d0d89 internal/lsp/source: move doc links to the bottom of hover
Fixes golang/go#36992

Change-Id: Ie4b749ba6c094c4559a9b3a3e5b63c0b4cbc5dcf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393642
Trust: Robert Findley <rfindley@google.com>
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2022-03-18 13:39:41 +00:00
Suzy Mueller 779dfa4fb2 internal/lsp: invalidate package on go.mod change with go.work
If a go.mod file is updated, the packages
in that module may have updated type check
errors since the go version can affect errors.

Fixes golang/go#51732

Change-Id: I3a8cd8b9ab267336ccc5c841a14c5ec5f6c986e5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393534
Trust: Suzy Mueller <suzmue@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-17 21:30:21 +00:00
Peter Weinbergr c7b0e9aca6 internal/lsp/template: fix processing of multi-line tokens
Aside from the logic error, the root flaw was inadequate
test coverage.

Fixes golang/go#51731

Change-Id: I50787a951ab742700d9890b4b5232e90189cb8ee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393634
Run-TryBot: Peter Weinberger <pjw@google.com>
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Trust: Peter Weinberger <pjw@google.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2022-03-17 15:18:29 +00:00
Hana e998cd2c59 internal/lsp: remove unused code
Change-Id: Id2a88b9826598de539aeea5c3983df279aa0c6c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392657
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-17 13:53:41 +00:00
Hana 877ec07e2d internal/lsp/cache: remove unused code
Change-Id: I7bafb1555ab7d35b9c49138c915b6c6c781e92c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392656
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-17 13:53:34 +00:00
pjw 85d68bc98d internal/lsp: update LSP stubs, including provisional InlayHints
There are also new InlineValue RPCs.

Change-Id: I4ba6d4c112760a5c5a199287843c61071a7f59a2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/390334
Trust: Peter Weinberger <pjw@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Kortschak <dan@kortschak.io>
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-16 22:16:36 +00:00
Heschi Kreinick fb5dfde700 internal/imports: update stdlib index for 1.18
Updates golang/go#38706.

Change-Id: I3e99e4dbe731b51a24e84c4381f440d3bc4cd4e4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393379
Trust: Heschi Kreinick <heschi@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Heschi Kreinick <heschi@google.com>
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2022-03-16 21:19:09 +00:00
Peter Weinbergr 77aa08bb15 internal/completion: default to regular completion for f.Fuzz without f.Add
Change-Id: I7a05dba3f4a68c2075ebdf078e9e0ee6cfd97f28
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393019
Run-TryBot: Peter Weinberger <pjw@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
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Trust: Peter Weinberger <pjw@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-16 01:41:57 +00:00
Robert Findley 6799a7ae92 internal/lsp/source: canonicalize objects in reference/rename requests
With generics, instantiated object may have differing pointer
identities. Fix references/rename requests for instantiated
methods/fields by using a canonical object identity of (pos, pkg, name).

Fixes golang/go#51672

Change-Id: I0021ca562b8a74dadb616cf6864cb0bdd0165cc3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392480
Trust: Robert Findley <rfindley@google.com>
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2022-03-15 13:54:34 +00:00
Josh Humphries 54a569a9db internal/imports: use first quote when matching import path
This fixes the regexp used to extract the import path from a line of code
when inserting newlines to split a sequence of imports into groups.

By using a non-greedy match, the regexp now functions correctly in the
face of an extra quote after the import path (such as when there is a
trailing comment that includes a quote).

Fixes golang/go#51671

Change-Id: Id7fd0b1d794f989d8f3d47336c5b5454cddd6237
GitHub-Last-Rev: b934371fa6d9ded902deac2268658b4485d9ce70
GitHub-Pull-Request: golang/tools#365
Reviewed-on: https://go-review.googlesource.com/c/tools/+/386914
Reviewed-by: Heschi Kreinick <heschi@google.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-15 00:13:15 +00:00
Michael Matloob ee31f70645 internal/lsp: add completion for use directives
For golang/go#50930

Change-Id: I9def58e9406ee735c93e988de336dbfee37e6c95
Reviewed-on: https://go-review.googlesource.com/c/tools/+/390054
Trust: Michael Matloob <matloob@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-10 23:20:43 +00:00
Michael Matloob 622cf7b338 internal/lsp/cache: copy workFile when invalidating workspace
to avoid losing workFile information when that happens. This fixes an
issue where diagnostics, hover, etc didn't show up after the initial
load when some changes were made to go.work files.

Change-Id: I42e2dcfd94a5b4726856ab0a4d8dfc9c1efc48b1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/391257
Trust: Michael Matloob <matloob@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-10 22:50:41 +00:00
Robert Findley c773560c36 internal/lsp/cache: set GOWORK=off when mutating modfiles
Commands will fail with -mod=mod when GOWORK is set. Explicitly set it
to off.

Fixes golang/go#48941

Change-Id: I39f9d95526ca6f3b0414ff273cecd443d69afa61
Reviewed-on: https://go-review.googlesource.com/c/tools/+/391518
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-03-10 21:45:24 +00:00
Peter Weinberger 613589de97 internal/lsp: more precise completions for *testing.F fuzz methods
The argument to f.Fuzz is determined, up to the names of arguments,
by the types of the arguments to f.Add. Inside the function argument
of f.Fuzz, only f.Name and f.Failed are allowed.

(The fset passed to fuzz was for debugging. When the change seems solid
it can be removed.)

Fixes golang/go#51089

Change-Id: Icf8b8cdfd29e499bcc605a358ca9edaef5baa835
Reviewed-on: https://go-review.googlesource.com/c/tools/+/387615
Reviewed-by: Robert Findley <rfindley@google.com>
Trust: Peter Weinberger <pjw@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-10 19:52:31 +00:00
Suzy Mueller b105aac570 internal/lsp: use regexp to add go mod edit -go quick fix
Fixes golang/go#51086

Change-Id: Iebe51355e016809442af37debf140d9ba2f3317a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/390615
Reviewed-by: Robert Findley <rfindley@google.com>
Trust: Suzy Mueller <suzmue@golang.org>
2022-03-09 21:08:21 +00:00
Robert Findley 03d333aa5e internal/lsp: add snippet completion for function type parameters
Fixes golang/go#51544

Change-Id: I29cf2a0fe878eed263b406ff3ebf1eaeffe10e4b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/390854
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2022-03-09 15:55:38 +00:00
Robert Findley b59c441bdb internal/lsp/cache: always consider go.work files for ws expansion
If a go.work file is present, we activate the workspace mode regardless
of the experimentalWorkspaceModule setting.

Fixing this also revealed a long-standing bug in traversing parent
directories. Amazingly I have no recollection of this bug being
reported, but it is far more likely to be hit with go.work files, when
users regularly open nested subdirectories.

Fixes golang/go#51477

Change-Id: I310a11b14f3bbc18fdd604c5c0ec33d7ee8f1174
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389300
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-07 16:11:49 +00:00
Michael Matloob e562276505 internal/lsp: add hover for go.work use statements
Show the module path of the module being used.

For golang/go#50930

Change-Id: I90a67e12182ffb457876b1fbc95aeb56ff632878
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389301
Trust: Michael Matloob <matloob@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-03-04 19:55:36 +00:00
Michael Matloob 121d1e448f internal/lsp: report diagnostics on go.work files
Report diagnostics on use lines where the directory doesn't have a
go.mod file, and on syntax errors in go.work.

For golang/go#50930

Change-Id: Idab36b43d86c4842f8eecd5c071ce0587e6f27b3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389317
Trust: Michael Matloob <matloob@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-04 18:29:58 +00:00
Marwan Sulaiman 3ce772872c internal/lsp/source: support stubbing concrete type params
This CL adds support for generating method stubs for named types
that have type parameters and want to implement an interface.
See internal/lsp/testdata/stub/stub_generic_receiver.go for an example.
Note, this CL does not yet support type params on interface declarations.

Updates golang/go#37537

Change-Id: I2a2a18d364b2b489e2fbd8a74dfed88ae32d83b5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389654
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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Trust: Suzy Mueller <suzmue@golang.org>
2022-03-03 22:52:16 +00:00
Michael Matloob 3286927895 internal/lsp/cache: construct workspace even when go.work has error
Before this change, newWorkspace would fall back to other workspace
types if there was an error parsing go.work files, or one of the
workspace modules did not exist. Instead, in those cases, newWorkspace
now successfully builds a *workspace with an error set.

This respects the user's intent when working with a go.work file so that
gopls can surface a diagnostic with the error.

Change-Id: Icfc2cad270111c03d53137fa8f1b2ee9b75093c8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389314
Trust: Michael Matloob <matloob@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-03-03 21:30:30 +00:00
Suzy Mueller 4a5e7f0db6 internal/lsp: correctly apply file edits for edit go directive
Fixes a bug where the go mod edit -go=version file edits
are never actually applied.

Change-Id: Id055b0fad3399a00e1245556eb39073f15be09d9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389216
Trust: Suzy Mueller <suzmue@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-03-02 18:47:53 +00:00
Bryan C. Mills ffa170dc4a internal/jsonrpc2_v2: fix a racy map assignment in readIncoming
If a call request comes it at the same time that a response becomes
ready for another call (either via an explicit Respond call or the
return from a Handle call), the map read and deletion for the response
could race with the map assignment for the new (incoming) call.

Change-Id: Ifd81dbc490486251e81c7eeae438806356f514af
Reviewed-on: https://go-review.googlesource.com/c/tools/+/388595
Trust: Bryan Mills <bcmills@google.com>
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2022-03-01 21:32:50 +00:00
Bryan C. Mills 5d35a75079 internal/jsonrpc2_v2: clarify documentation
For golang/go#46520

Change-Id: Id9cdb539ae6f16e03d02f3b00b0b5ee06042a42f
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2022-03-01 14:55:09 +00:00
Suzy Mueller c2ddf3dda2 internal/lsp: add quick fix for unsupported feature
Adds a command to run go mod edit -go to allow
users to easily upgrade their go directive.

Doing this change also revealed that changing
the go directive does not invalidate the type check
data and there may be stale diagnostics for a package.

Updates golang/go#51086

Change-Id: I659a216059c489a88e29cd51b944c3a0274f3700
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2022-02-28 18:28:20 +00:00
pjw 9ffa3ad372 internal/lsp: Provide completions for test function definitions
In test files, function definitions starting with
Test, Bench, or Fuzz can be completed almost automatically.

For the snippets the user hits tab, completes the name, hits
tab again, and the function is defined, except (of course) for its
body.

Otherwise a completion that fills in the signature is proposed.

Where appropriate, 'TestMain(m *testing.M)' is also offered as
a completion.

Fixes golang/go#46896 and golang/go#51089

Change-Id: I46c05af0ead79c1d82ca40b2c605045e06e1a35d
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2022-02-25 19:27:31 +00:00
Suzy Mueller b7525f4396 internal/lsp: hash go version into package key
The go directive affects type checking errors so
it should be included in the package key.

I manually tested that this fixes the issue in golang/go#51325

Fixes golang/go#51325

Change-Id: I109859ae65e7e4d5fdefc63a0a7a838117ee02cf
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2022-02-24 19:04:43 +00:00
Robert Findley 5210e0ca15 gopls: wire in LangVersion and ModulePath for gofumpt formatting
If available, pass the LangVersion and ModulePath provided by
go/packages to gofumpt. This allows gofumpt to apply additional
formatting rules that require this information.

Also add a regression test for gofumpt formatting.

Fixes golang/go#51327

Change-Id: I47c8c96d595d62e1c444285ce69ce6a4e61fa74c
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2022-02-24 18:08:50 +00:00
Robert Findley 258e473066 internal/lsp/source: disable the useany analyzer by default
This analyzer was written at a time when any was only allowed in
constraints, and usage of any vs interface{} was more likely to be
confusing.

Any is now allowed anywhere, and so it is inconsistent to suggest it
only for constraints. However, we can't suggest any over interface{}
everywhere, as that would be incredibly noisy.

Perhaps we should remove this analyzer, but for now simply change it to
off by default.

Change-Id: Ib9726bdb835808d69827c6cd8e4a58dc5d83ad0e
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2022-02-23 15:44:43 +00:00
Matheus Alcantara b7d29496b7 internal/lsp: don't store diagnostics for builtin.go
Fixes golang/go#44866

Change-Id: I9606df932c1b35d91816306fbcb48edc5b023b30
GitHub-Last-Rev: e6f525ed46a08ac77eac3af295c2be684405e88b
GitHub-Pull-Request: golang/tools#364
Reviewed-on: https://go-review.googlesource.com/c/tools/+/386219
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2022-02-23 15:43:26 +00:00
Michael Matloob 3e31058cd7 internal/imports: update to permit multiple main modules
Now that there there can be multiple main modules due to workspaces in
cmd/go, update internal/imports to no longer assume that there will be
exactly one main module.

Change-Id: I9d044df612fbeaba73b8fc3dbbec0395b54ecba2
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2022-02-22 17:36:43 +00:00
Suzy Mueller 43f084e593 internal/typesinternal: update typesinternal for 1.18
This CL adds the error codes introduced in
1.17 and 1.18.

Change-Id: I5646a2cdfe2b1a86756f3e9beb8b9c781d7cbccf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/386874
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2022-02-22 16:42:18 +00:00
Robert Findley 897bd77cd7 internal/gocommand: remove support for -workfile
Remove support for passing the -workfile flag now that the go command no
longer supports it.

Updates #51215

Change-Id: I95d73fb1a3a6d9bcfaaae5e22e44722118d12c03
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2022-02-18 14:51:54 +00:00
Robert Findley adcfb65266 internal/lsp/source: use the object as the hover source for type params
Use the type name object as the signature source for type parametes, as
it it efficiently formatted as "type parameter <name> <constraint>".

Fixes golang/go#51116

Change-Id: I3042ff248402dae833e3197c6ac320c2bd103c07
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2022-02-17 17:38:34 +00:00
Robert Findley 411d04022e internal/lsp/source: clean up the interface to hover information
Clean up the relationship between HoverContext and HoverJSON so that
HoverContext is more clearly responsible for collecting comment and
signature nodes, and HoverJSON is more clearly a DTO for the hover RPC.

Change-Id: Ib32d4151a53505d227b4225be4f87754a542e980
Reviewed-on: https://go-review.googlesource.com/c/tools/+/385017
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2022-02-17 17:38:22 +00:00
Robert Findley 45aeaf7b04 internal/lsp/source: improve the heuristics for linkable identifiers
We should not offer links to variable or type declarations in function
scope. Improve our heuristics to check that the declaration object is
actually reachable from the package scope.

Also push down handling of private import paths, so that the
HoverJSON.importPath field can be removed.

Change-Id: I6edb3be3c37f479667c838beb49f97e7167b47a1
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2022-02-17 17:38:11 +00:00
Robert Findley a317113201 internal/lsp/source: fix hover on generic type declarations
Hover on type specs was using the RHS of the type declaration and then
later rebuilding the declaration syntax. It was thereby dropping type
parameter lists.

Fix this by capturing the entire *TypeSpec for the signature, and
simply dropping comments from the node before formatting, so that they
are not duplicated.

Change-Id: I58724e65bd1f2aada1a5c04e4c61a059bed8357a
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2022-02-17 17:37:50 +00:00
Robert Findley 1f3875c379 internal/lsp/source: begin to refactor hovering with a HoverContext type
The logic to resolve hover information is hard to follow, due to various
indirection building up the HoverInformation struct, and the lack of a
definition for HoverInformation.source. Incrementally refactoring to
solve these problems is a tricky; as a first step, split out that
information which is shared with completion and signature help into a
new type.

Also refactor FormatHover to be a bit more uniform.

Change-Id: Ib4f30e5f7cd085a3280c31836df3840ee3466b4d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/385014
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2022-02-17 17:37:24 +00:00
Robert Findley fd59bdfe0d internal/lsp/source: adjust object position when formatting full AST
Thread through an adjusted object position when we format an re-parsed
AST that wasn't type-checked to produce the object. Also remove some
unnecessary handling of the object type.

Fixes golang/go#46158

Change-Id: Ic8bee2bb4cb992d577d085599213fca1deab3b4e
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2022-02-17 17:37:03 +00:00
Robert Findley cda4201ef0 internal/lsp/source: simplify Identifier.enclosing
Receiver base types are either *Interface or *Named, never *Struct.
Absent a comment, I don't know why we had handling for *Struct, so just
delete it.

We only care about the enclosing type if it is named, so track a
*TypeName rather than an arbitrary Type.

Change-Id: I729c85b935a35da429b975327b56d81dc56773cf
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2022-02-17 17:36:57 +00:00
Hana c6776771dd internal/lsp/cache: let Session.getGoEnv query GOWORK
This will make GOWORK value appear in the gopls log
when initializing the workspace. This CL does not include
GOWORK in `environmentVariables` (in view.go) (yet).

Change-Id: I16224d1ac50ac8209def008966371c6be858d05a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/385894
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2022-02-16 20:15:32 +00:00
Marwan Sulaiman 70c3ea29e2 gopls,internal/lsp: Implement method stubbing via CodeAction
This CL adds a quickfix CodeAction that detects "missing method"
compiler errors and suggests adding method stubs to the concrete
type that would implement the interface. There are many ways that
a user might indicate a concrete type is meant to be used as an interface.
This PR detects two types of those errors: variable declaration and function returns.
For variable declarations, things like the following should be detected:
1. var _ SomeInterface = SomeType{}
2. var _ = SomeInterface(SomeType{})
3. var _ SomeInterface = (*SomeType)(nil)
For function returns, the following example is the primary detection:
func newIface() SomeInterface {
	return &SomeType{}
}
More detections can be added in the future of course.

Fixes golang/go#37537

Change-Id: Ibb7784622184c9885eff2ccc786767682876b4d3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/274372
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2022-02-16 19:42:34 +00:00
Nooras Saba 2ff4db7dab go/analysis/passes/tests: Check malformed fuzz target.
This will validate that first letter after FuzzFoo() should be uppercase
Also, following validation will be performed for f.Fuzz() calls :
	1. f.Fuzz() should call a function and it should be of type (*testing.F).Fuzz().
	2. The called function in f.Fuzz(func(){}) should not return result.
	3. First argument of func() should be of type *testing.T
	4. Second argument onwards should be of type []byte, string, bool, byte,
	   rune, float32, float64, int, int8, int16, int32, int64, uint, uint8, uint16,
	   uint32, uint64

For golang/go#50198

Change-Id: I540daf635f0fe03d954b010b9b5f8616fd5df47a
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2022-02-16 18:26:19 +00:00
Michael Matloob be40034de7 internal/lsp: add support for formatting go.work files
Wired through support for calling x/mod's go.work formatter on go.work
files into LSP. Tested it by hand in editor using the "Format Document"
command. Added a test case to workspace_test regtest, though I'm not
totally sure the test is correct.

For golang/go#50930

Change-Id: Ied052ded514bb36f561737698f0e2d7b488158e7
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2022-02-15 17:15:32 +00:00
Suzy Mueller 2405dce5ad internal/lsp: use placeholders with prepare rename
When a prepare rename request is issued on an package
import with no alias, the range returned by prepare
rename has length 0. This by itself does not provide
enough information to the client about what the original
name of the import statement. By returning a range and
a placeholder, this allows the client to correctly present
the information about what is being renamed to the user.

Change-Id: I191fdc666616d1ddf718d2a0b1461b9b645af879
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2022-02-15 00:29:01 +00:00
Heschi Kreinick c0b9fb59f7 internal/lsp/analysis/undeclaredname: suppress impossible quick fixes
Reading the code and running the tests, it appears we only support quick
fixes for undeclared name errors inside function bodies. Don't offer
them in other places.

The specific situation raised was type constraints, so that's what I
tested even though the problem was much broader. Also add actual error
messages where we had empty strings.

Fixes golang/go#50935.

Change-Id: I8dadcb6e4301bf22cbe7fe5d66064aafeef02690
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2022-02-09 19:35:26 +00:00
fzipp 9b156eeb91 internal/lsp/source: provide full documentation of builtin types
This change adds support for full documentation of builtin types in the
hover info, consisting of the type declaration, a link to pkg.go.dev,
and the text of the doc comments in the `builtin` pseudo-package.

Full documentation for builtin functions was already supported.
Removes the special case for the `error` interface, which is not needed
and didn't provide the full documentation anyway, only the type
declaration.

The code has to determine the parent ast.GenDecl (which holds the doc
comments) for the ast.TypeSpec of a builtin type.

Fixes golang/go#50196

Change-Id: I51a054cd7e864300ba2e51152311744b7bcf3e0c
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2022-02-08 17:01:10 +00:00
Robert Findley caecc2b0ac internal/typeparams: add a generic form of types.AssignableTo
For some use-cases, it is helpful to compute predicates between
uninstantiated generic types.

This CL implements one such predicate for types.AssignableTo, a helper
GenericAssignableTo which reports if, for generic types V and T with the
same number of type parameters, all instantiations V[A_1, ..., A_N] are
assignable to the corresponding instantiation T[A_1, ..., A_N].

For #50887
For #50447

Change-Id: I7a0550fba05666bb2375d478d5390a123e09f556
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2022-02-08 16:50:25 +00:00
Heschi Kreinick 164402db9d internal/lsp/cache: set types.Config.GoVersion
Set the language version from the controlling go.mod file's go version,
if any. Also verify that we properly surface a diagnostic if the version
is invalid.

I didn't add any quick fixes.

Fixes golang/go#50688.

Change-Id: Ic472502d1224a1decb5b989d51110b837020e998
Reviewed-on: https://go-review.googlesource.com/c/tools/+/383394
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2022-02-07 18:19:30 +00:00
Hana 6aaba7740f internal/lsp/debug: add go version to gopls version output
Add -json flag to output in JSON format.

Include the Go version info
  - go1.18: runtime/debug.BuildInfo.GoVersion
  - pre go1.18: runtime.Version

Restructure ServiceVersion so we embed info from
runtime/debug.BuildInfo. Instead of directly using
runtime/debug.BuildInfo, we use our own BuildInfo type.
That allows:
  for go1.17 or older versions, we can add GoVersion.
  for go1.18, we can drop MarshalText that prevents
  JSON encoding other languages and human can understand
  (golang/go#51026)

For golang/go#49783

Change-Id: Ia5ab50ce1f5e6c3a912654834785ecea7f5034e2
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2022-02-07 15:39:03 +00:00
Heschi Kreinick 414ec9c3f0 internal/lsp: add ListImports
The VS Code extension uses information about imports to figure out
whether a given function is a Testify test. As of writing, it asks:
- Does the file import Testify?
- Does the package it's in do so?
To answer these questions, add ListImports, which tells you about the
packages imported by the current file, including their import name,
plus the import paths of all imports in the entire package.

I suspect the latter may be wrong in the presence of GOPATH vendoring,
but that should be a relatively rare situation at this point so I didn't
bother testing.

Fixes golang/go#40514.

Change-Id: I4c69e1db80dce6e594bdb595a81aade1ddec4d29
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2022-02-04 22:09:29 +00:00
Robert Findley 597b165f5f internal/lsp/cache: use -workfile on 1.18
When using go 1.18 with go.work files, don't fake workspaces by creating
a workspace module: just run from the workspace root and pass -workfile.

For golang/go#44696

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2022-02-04 14:03:59 +00:00
Robert Findley 8305295d5d gopls: recognize the go.work file type
For golang/go#50930

Change-Id: I5bae56853f1e913fccd559d2a553ced4200bcb35
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382237
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2022-02-04 14:03:20 +00:00
Robert Findley 962260a678 internal/lsp/source: remove the unused source.DetectLanguage
Change-Id: If146b609f7dbf019cb11b27c73d685bcaf5a5075
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382236
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2022-02-04 14:03:07 +00:00
Robert Findley 3e30e21b53 gopls: remove the workspace_metadata command
Remove the workspace_metadata command, as VS Code no longer needs this
to run workspace commands (it can use go.work instead).

Updates golang/go#44696

Change-Id: Ife579a15e64969c4301e4508e18b7c8a8b633b9f
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2022-02-04 14:02:58 +00:00
Robert Findley 25d2ab26ce internal/lsp/cache: fixes for workspace invalidation
This CL fixes a several bugs in workspace invalidation:
 - When invalidating the workspace due to a change in gopls.mod or
   go.work files, we should not update the workspace if the change does
   not parse. There was a comment to this effect, but it was not
   properly implemented.
 - Check go.work before gopls.mod, consistent with our intitial
   workspace load.
 - If we get an 'unchanged' change (such as a save) to go.work, don't
   continue looking for gopls.mod.

A regression test that inadvertently relied on our mishandling of broken
go.work files is updated to have the correct syntax. A new regtest
expectation is added to assert on a clean workspace.

For golang/go#44696

Change-Id: I2b7e739573e225cadfbf8cc892a0b5daf0191e40
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382115
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2022-02-04 14:02:15 +00:00
Robert Findley 8d915b1238 internal/lsp/cache: simplify workspace construction
Remove some duplication in the construction of cache.workspace
instances.

For golang/go#44696

Change-Id: Ic955fa3f9a574781f627c550694f0b87ad2013e1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382114
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2022-02-04 14:02:00 +00:00
Robert Findley 77f5fa5142 internal/lsp/cache: replace old go.work parser with x/mod
Gopls was using an old version of workfile support in x/mod that did not
support the 'use' syntax.

Upgrade to x/mod@master, and update tests accordingly.

For golang/go#44696

Change-Id: I87841cd1322d7b1aa0fbc929838746ea600bee77
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382078
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2022-02-04 14:01:19 +00:00
Robert Findley 4da8ceb6f1 internal/lsp/source: remove the unused UpdateUserModFile invocation flag
Change-Id: I4325417e4d97d3ab82551c2fa0382aa3d962a781
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382077
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2022-02-03 22:05:07 +00:00
Shoshin Nikita 727dfdb191 internal/lsp/source/completion: add conventional acronyms for type names
This change adds a list of conventional acronyms that are used for function
completion. For example, "err" for "error" and "tx" for "sql.Tx" or "sqlx.Tx".

Fixes golang/go#48260

Change-Id: Iff951ee58c0c95389d474cc45dfd84b483ff71e3
GitHub-Last-Rev: 05ccd5a2fe95e2e0504d28230308c4888477a977
GitHub-Pull-Request: golang/tools#363
Reviewed-on: https://go-review.googlesource.com/c/tools/+/381969
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2022-02-03 15:53:42 +00:00
pjw c009ab4a1f internal/lsp/completion: the inserted text should be what is shown to the user
CompletionItem.Label is what is shown to the user. Unless InsertText is
overridden by there being a TextEdit, InsertText should be the same
as Label.

Change-Id: I200739fbdfca19aa33154d5391b3ebcc79dd7af5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382243
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2022-02-03 15:40:54 +00:00
Robert Findley eeb95ae5ed gopls: make 'fastfuzzy' the default fuzzy matcher for workspace symbols
For dense queries, the fastfuzzy matcher is around 3x faster. It also
has improved scoring for exact matches of CamelCase words or path
segments.

Fixes golang/go#50016

Change-Id: I04cae11cbc54de59d54733836876a9ee759c80b6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382394
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2022-02-03 14:26:36 +00:00
Robert Findley ea5e1dc8bc internal/typeparams: add a helper to return the origin method
With instantiated types, method objects are no longer unique: they may
be instantiations of methods with generic receiver. However, some
use-cases require finding the canonical method representing the method
in the source. For these use-cases, provide an OriginMethod helper.

For golang/go#50447

Change-Id: I6f8af3fb5c5eeefb11f8f3bdba54cd6692ca389f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/380554
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2022-02-03 14:02:38 +00:00