Commit Graph

196 Commits

Author SHA1 Message Date
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 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
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>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-05-18 01:40:46 +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
Robert Findley 4a3fc2182a internal/lsp: only linkify urls with http, https, and ftp schemes
Fixes golang/go#43990

Change-Id: I0ea26d521b2432238b05c26bfaccef6fc773dcf2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/393854
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-05-02 22:00:12 +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

Change-Id: Ibf459cc72402a30a6c2735dc620f76ed8a5e2525
Reviewed-on: https://go-review.googlesource.com/c/tools/+/401097
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-20 15:33:22 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/396974
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gopls-CI: kokoro <noreply+kokoro@google.com>
2022-04-07 14:59:24 +00:00
Dan Kortschak 4077921f14 all: fix spelling
Change-Id: I13cf73d7e043dda1a06c28bb09e413a76a68df1f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/391934
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2022-04-04 19:50:34 +00:00
cuishuang 78ff15e680 tools: fix some typos
Change-Id: Iaad847631b9d5ee40558fcf9d51f4dfa99600e6b
GitHub-Last-Rev: 6fcb64f8d9a093e7bd949e5d28bd1176c27005c0
GitHub-Pull-Request: golang/tools#372
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389595
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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
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2022-03-24 21:16:24 +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
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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2022-03-23 18:02:45 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/387634
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/387614
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2022-02-23 15:44:43 +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
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-02-16 19:42:34 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/383774
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2022-02-15 17:15:32 +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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gopls-CI: kokoro <noreply+kokoro@google.com>
2022-02-03 14:26:36 +00:00
Robert Findley a71de3f351 gopls/doc: fix inconsistent rendering of enum newlines
We have inconsistent rendering of newlines in enums, as pointed out in
CL 314189 (that change edited the markdown directly, which won't work).

Change-Id: Ie39b80fe65287bd447d18cacdaea60b24b4bd08f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/369957
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gopls-CI: kokoro <noreply+kokoro@google.com>
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2022-01-19 15:07:38 +00:00
Robert Findley 523d859406 internal/lsp/source: use the fastfuzzy matcher in experimental mode
The fastfuzzy matcher is around 3x faster than the fuzzy matcher for
queries that need to search a large number of symbols, and has improved
scoring due to built-in knowledge about the structure of Go symbols.

Enable it in experimental builds of gopls, with plans to enable it by
default in the next release.

For golang/go#50016

Change-Id: Ie2c333f248bb8397d92f52fbbfdd2bf623372d0a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/377434
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2022-01-19 15:06:54 +00:00
Robert Findley c4cfc425f2 gopls: change the default value for templateExtensions to be empty
There is no standard for go template file extensions, and users may not
want this functionality. Make template support opt-in by changing the
default value of templateExtensions to be [].

Updates golang/vscode-go#1957

Change-Id: I7e37d22b1bc63d8300634b3b0394b4036b43fa49
Reviewed-on: https://go-review.googlesource.com/c/tools/+/375874
Trust: Robert Findley <rfindley@google.com>
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2022-01-13 20:56:24 +00:00
Peter Weinberger 1e71a25a93 gopls: template suffix flags and documentation
Adds 'templateExtensions' (with default ["tmpl", "gotmpl"]) to control
which files gopls considers template files.

Adds template support documentation to features.md.

Fixes golang/go#36911

Change-Id: If0920912bf3748d1c231b3b29e7a008da186bede
Reviewed-on: https://go-review.googlesource.com/c/tools/+/363360
Run-TryBot: Peter Weinberger <pjw@google.com>
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2021-11-23 16:39:20 +00:00
pjw fc3ed20887 internal/lsp: enable template processing and add templateFiles option
Move template processing out of experimental and enable it. Users
can set the option 'templateSupport' to false to disable it.
Also, add a new flag 'templateExtensions', defaulting to ['tmpl','gotmpl']
to let the user provide a list of extensions of files
to be considered as template files.

Change-Id: I724387738c1632256999cda304d6cf9fa48ed91d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/362241
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2021-11-10 16:35:53 +00:00
Rebecca Stambler 24389d4d0c internal/lsp: use the correct dynamic registration booleans
I mistakenly used DynamicConfigurationSupported for all capabilities,
not just the workspace/configuration one.

Fixes golang/go#48600

Change-Id: Ie9b205d89da6e4d110a5310b31fc1ba22f2b5383
Reviewed-on: https://go-review.googlesource.com/c/tools/+/352055
Trust: Rebecca Stambler <rstambler@golang.org>
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2021-10-13 03:12:54 +00:00
Robert Findley 1c35f2a5d7 internal/lsp/analysis: quick-fix to remove unnecessary type arguments
This CL adds a new infertypeargs analyzer, which finds call exprs where
type arguments could be inferred, and suggests a quick fix to simplify
them.

Along the way, may two changes to the supporting frameworks:
 - Initialized types.Info.Instances in go/packages
 - Fail analysis tests run with suggested fixes if formatting the
   resulting source fails.

Change-Id: Ib15e5bd7c26aa293c5fc18a4cff6bc047e9e31d2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/351552
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-09-29 19:22:48 +00:00
Rebecca Stambler 7898fe60e6 internal/lsp/analysis: move implementmissing logic into undeclared
I missed the TODO in undeclaredname to add support for functions, so
really this belongs in that analyzer. This removes a fair bit of code.
However, the type error analyzers don't really work with the go/analysis
testing framework because the suggested fixes are split from the
diagnostics, so I moved the tests into the gopls tests.

Change-Id: I861a7ad531d2732fe698ee0ac46f23ad53b16812
Reviewed-on: https://go-review.googlesource.com/c/tools/+/351333
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2021-09-28 22:17:57 +00:00
Robert Findley 284795867f internal/lsp/analysis: add a useany analyzer
Add an analyzer that checks for empty interfaces in constraint position,
that could instead use the new predeclared "any" type.

Change-Id: I6c11f74c479c2cba64b3b12e61d70d157f94393b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/351549
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2021-09-22 22:01:06 +00:00
Francesco Renzi b98090b833 internal/lsp/analysis/implementmissing: add analyzer
This adds an analyzer that provides suggested fixes for undeclared name
errors on function calls, implementing a stub of the fuction (with an
empty body). As of now this doesn't try to guess returned types but
only parameters.
Generated functions are appended at the end of the file where these type
errors occur.

Updates golang/go#47558

Change-Id: Iaef45ada6b7b73de1fbe42e5f7e334512b65e6c7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/348829
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2021-09-21 20:35:14 +00:00
Rebecca Stambler 2758b0478a gopls/api-diff: create api-diff command for gopls api
This change adds a command that can be used to see the difference in
API between two gopls versions. It prints out the changes in a way that
can be copy-pasted into the release notes.

Also, only run the copyright test with 1.18. I wanted to do this before
to use filepath.WalkDir, but now it also doesn't work with generic
syntax (it doesn't use packages.Load, so doesn't respect build tags).

Fixes golang/go#46652

Change-Id: I3670e0289a8eeaca02f4dcd8f88f206796ed2462
Reviewed-on: https://go-review.googlesource.com/c/tools/+/327276
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2021-09-17 17:58:44 +00:00
Johannes Altmanninger d39bbca0a3 gopls: consistently capitalize enum variants for symbolStyle
We use a case-insensitive comparison so this doesn't really
matter but it's a bit confusing that gopls/doc/settings.md and
internal/lsp/source/api_json.go were inconsistent here.  I'm assuming
the latter also shows up as user-visible documentation somewhere,
probably in the VSCode plugin.

Change-Id: I14fa5b9d062266b6de0397aafb36e0ad84730752
Reviewed-on: https://go-review.googlesource.com/c/tools/+/344353
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2021-09-03 18:04:29 +00:00
Johannes Altmanninger 4e109c5706 gopls: use new "codelenses" config key in docs over deprecated "codelens"
There is a TODO to remove the "codelens" alias. This updates an
example in the documentation to use the new name.

Change-Id: Id807e99f5ba1da663eae9660fb65521596b0c488
Reviewed-on: https://go-review.googlesource.com/c/tools/+/344352
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2021-09-03 18:01:36 +00:00
Rebecca Stambler 3b801c8b83 internal/lsp: exclude node_modules in the workspace root by default
It is unlikely that users want gopls operating on their node_modules
directories, so we should exclude them by default. If a user wants to
include them, they can override their directory filters setting.

This doesn't exclude *any* directory named "node_modules", so we still
need to implement golang/go#46438 to exclude node_modules completely.

Change-Id: I03c42208e62390dc35e44ac5176422ddf8dc53f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/347297
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2021-09-02 18:21:15 +00:00
Rob Findley f35d7dcca5 internal/lsp/source: offer the fast fuzzy matcher as an option
Hook up the new fast SymbolMatcher as an option.

Benchmark ("test" in x/tools): 48ms->21ms (with the new matcher)
Benchmark ("test" in kubernetes): 857ms->199ms (with the new matcher)

Change-Id: Ic638eda1ed10572638f32879dd9b56467ae305ef
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2021-08-09 20:21:18 +00:00
Rob Findley febfa9d67f internal/lsp/source: move diagnosticsDelay out of experimental
This option has been enabled by default for a while now: remove it from
'experimental' to 'advanced'.

Change-Id: Id8116bf7b8976204a61fe1bbf9dc0b8bd69c68d1
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2021-07-08 19:56:33 +00:00
Rob Findley 251f283686 internal/lsp: add a setting to batch didChangeWatchedFile notifications
Gopls's serial processing of didChangeWatchedFile notifications has
historically been a pain point for clients that don't batch file events,
when branch switching or running go generate.

It's "not that tricky" for us to debounce and batch up watched file
notifications on our end, so this CL introduces this functionality as a
new experimental setting. Truth be told it ended up being harder than
expected, due to (1) our requirement for regtests to be able to
determine when diagnostics have completed, and (2) our reliance on
jsonrpc2 for sequencing changes to the server.

To address (1), I factored out the actual processing of change
notifications into a separate method (thus increasing our surprisingly
long chain of method calls). To address (2), I guarded the processing of
file changes with a mutex.

I also guarded some places where views and snapshots were accessed in
potentially racy ways. Our interaction with session.views was rather
complicated, so I had to switch session.viewsMu to a RWMutex.

Add this to the experimental regtest mode, and more generally enable all
experimental features in this mode, rather than just the experimental
workspace module.

Fixes golang/go#41691

Change-Id: Ifccdbdf86263dbe2e37ffe9f7bbf2a2cd74218b4
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2021-07-08 19:55:54 +00:00
Rebecca Stambler b12e6172dc internal/lsp/cache: don't delete metadata until it's reloaded
Retrying CL 271477, this time with parts of CL 322650 incorporated.

This CL moves to a model where we don't automatically delete invalidated
metadata, but rather preserve it and mark it invalid. This way, we can
continue to use invalid metadata for all features even if there is an
issue with the user's workspace.

To keep track of the metadata's validity, we add an invalid flag to
track the status of the metadata. We still reload at the same rate--the
next CL changes the way we reload data.

We also add a configuration to opt-in (currently, this is off by
default).

In some cases, like switches between GOPATH and module modes, and when a
file is deleted, the metadata *must* be deleted outright.

Also, handle an empty GOMODCACHE in the directory filters (from a
previous CL).

Updates golang/go#42266

Change-Id: Idc778dc92cfcf1e4d14116c79754bcca0229e63d
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2021-06-16 00:19:40 +00:00
Rob Findley 490eac872f internal/lsp/command: add missing doc and support for result parameters
This CL cleans up doc/commands.md to include missing command
documentation and add support for result parameters.

Included are some quick-and-dirty extensions to the command metadata
loader that handle slices and arrays of struct types.

Change-Id: I43a85e88c9c53e21b790d89a45a9de444addcc63
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2021-06-11 15:30:39 +00:00
Rebecca Stambler 384c392572 Revert "internal/lsp/cache: don't delete metadata until it's reloaded"
This reverts commit 46e69bf3b2.

Reason for revert: Still has bugs associated with it and want to do a release

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2021-06-02 19:45:53 +00:00
Rebecca Stambler 726034ecff Revert "internal/lsp: enable semantic tokens by default"
This reverts commit 5ab822f631.

Reason for revert: Too early to enable since we need to figure out a plan for formatting directives

Change-Id: I46567b271d4ecd7e4af574221520a72bd8b8e500
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2021-06-02 18:55:23 +00:00
Rebecca Stambler 5ab822f631 internal/lsp: enable semantic tokens by default
Change-Id: Ie094874849fce1ff06988c8b1809f48a5a34b555
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2021-05-27 19:51:27 +00:00
Dominik Honnef 917abfb0e7 gopls: propagate Staticcheck's diagnostic severities
Each analyzer in Staticcheck is annotated with the appropriate
severity to use for its diagnostics. For example, most checks in SA*
produce warnings, but some produce errors (e.g. when passing an
invalid regular expression to regexp.Compile).

This will be especially important for a follow-up CL that enables
Staticcheck's new quickfix category, which contains optional
refactorings that shouldn't be flagged as warnings.

Change-Id: I6235303a3bb188ef79f52952c01e9585301a3270
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2021-05-25 19:05:09 +00:00
Rebecca Stambler 46e69bf3b2 internal/lsp/cache: don't delete metadata until it's reloaded
This CL moves to a model where we don't automatically delete invalidated
metadata, but rather preserve it and mark it invalid. This way, we can
continue to use invalid metadata for all features even if there is an
issue with the user's workspace.

To keep track of the metadata's validity, we add an invalid flag to
track the status of the metadata. We still reload at the same rate--the
next CL changes the way we reload data.

We also add a configuration to opt-in (currently, this is off by
default).

In some cases, like switches between GOPATH and module modes, and when a
file is deleted, the metadata *must* be deleted outright.

Updates golang/go#42266

Change-Id: Iff5e10b641fdb4be270af0cd887a10ee97ac1a19
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2021-05-19 23:21:03 +00:00
Muir Manders dd255f2351 lsp/source: enable experimentalPostfixCompletions by default
Leave the options flag so people can disable it for now if needed.

Updates golang/go#39507.

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2021-05-05 22:35:07 +00:00
Peter Weinbergr 7cab0ef2e9 internal/lsp: support template files
Provide some support for template files, implementing most of
https://docs.google.com/document/d/1clKAywucZVBXvL_v4mMhLQXso59lmQPMk1gtSpkV-Xw

Template support is controlled by the option 'experimentalTemplateSupport'
which defaults to false.

Most of the code is in a new 'template' package. Implemented are
semantic tokens, diagnostics, definitions, hover, and references,
and there is a stub for completions.

This code treats all the template files of a package together, so as
to follow cross-references.

Change-Id: I793606d8a0c9e96a0c015162d68f56b5d8599294
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2021-05-05 01:45:45 +00:00
pjw edbe9bef04 internal/lsp/completion: indicate completion candidates that are deprecated
In LSP, CompletionItems can say if they are for deprecated names. This
CL implements that for items where the doc comments contain a line
starting // Deprecated.

Semantic tokens now similarly mark deprecated tokens, but in vscode
the default theme doesn't change the display, and the customization
options seem limited to:

    "editor.semanticTokenColorCustomizations": {
        "rules": {
          // only foreground, bold, underline, italic
          "*.deprecated": {"italic": true}
        }
    },

Change-Id: I93ccc227bf4e1e30a4f23b40da4d2cbafe1cd925
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2021-04-30 19:49:23 +00:00
Heschi Kreinick e435455aa1 internal/lsp: introduce MemoryMode
We still hear from users for whom gopls uses too much memory. My efforts
to reduce memory usage while maintaining functionality are proving
fruitless, so perhaps it's time to accept some functionality loss.

DegradeClosed MemoryMode typechecks all packages in ParseExported mode
unless they have a file open. This should dramatically reduce memory
usage in monorepo-style scenarious, where a ton of packages are in the
workspace and the user might plausibly want to edit any of them.
(Otherwise they should consider using directory filters.)

The cost is that features that work across multiple packages...won't.
Find references, for example, will only find uses in open packages or in
the exported declarations of closed packages.

The current implementation is a bit leaky; we keep the ParseFull
packages in memory even once all their files are closed. This is related
to a general failure on our part to drop unused packages from the
snapshot, so I'm not going to try to fix it here.

Updates golang/go#45457, golang/go#45363.

Change-Id: I38b2aeeff81a1118024aed16a3b75e18f17893e2
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2021-04-23 19:11:18 +00:00
Shoshin Nikita 799b6824f9 gopls/internal/hooks: respect the default checks of the staticcheck tool
Disable non-default checks by default. Also, update the regression
test because the previous version used a non-default check (ST1022).

Fixes golang/go#44712

Change-Id: I825cac8387b33307e529fc27ca2f54c2d0d50cc7
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GitHub-Pull-Request: golang/tools#303
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2021-04-15 21:16:26 +00:00
Heschi Kreinick be791d07ff internal/lsp/source: small fixes to directory filters
Add missing newlines in documentation, and allow trailing slashes in the
filter expressions.

Change-Id: I90106b209222d8cc542e3517c6ff6edb2569243d
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2021-04-08 19:22:05 +00:00
Muir Manders 94a19427f1 internal/lsp/completion: move postfix completions behind option
Move postfix completion functionality behind an experimental option
flag. For now users can enable it by setting
"experimentalPostfixCompletions" or "allExperiments".

I added a RunnerOption so regtest tests can tweak *source.Options. I
didn't refactor the "Experimental" mode to use the new RunnerOption
because I didn't fully understand its purpose.

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2021-03-29 18:55:49 +00:00
Muir Manders 09058ab085 internal/lsp/source/completion: add postfix snippet completions
Postfix snippets are artificial methods that allow the user to compose
common operations in an "argument oriented" fashion. For example,
instead of "sort.Slice(someSlice, ...)" a user can expand
"someSlice.sort!". The snippet labels end in "!" to make it clearer
they do something potentially unexpected. The postfix snippets have
low scores so they should not interfere with normal completions.

The snippets are represented (almost) entirely as Go text/template
templates. This way the user can create custom snippets to match their
general preferences or to capture common patterns in their codebase.
There is currently no way for the user to create snippets, but it
could be accomplished with a configuration file, custom LSP command,
or similar.

I started by implementing a variety of snippets to help flesh out the
various facilities needed by the templates. The most interesting
template capabilities are:
 - The ability to import packages as necessary (e.g. "sort" must be
   imported to call sort.Slice()).
 - The ability to generate unique variable names to avoid accidental
   shadowing issues.
 - The ability to weave LSP snippets into the template. Currently,
   only {{.Cursor}} is exposed, which corresponds to the snippet's
   final tab stop.

Briefly, these are the postfix snippets in this commit:
 - foo.sort => sort.Slice(foo, func(...){}) (slices)
 - foo.last => foo[len(foo)-1] (slices)
 - foo.reverse (slices)
 - foo.range => for i, v := range foo {} (slices/maps)
 - foo.append
     This snippet inserts a self-assignment append statement when
     appropriate, otherwise just an append expression.
 - foo.copy creates a copy of a slice
 - foo.clear empties out a map
 - foo.keys creates slice of keys
 - foo().var assigns result value(s) to variables
 - foo.print prints foo to stdout

Some of these are probably not very useful in practice, and I'm sure
there are lots of great ones I didn't think of.

Updates golang/go#39507.

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2021-03-29 17:27:46 +00:00
Rebecca Stambler 09a00c1ab1 internal/lsp: fix support for SourceFixAll code actions
Some of the refactoring changed the way that we label code action kinds,
and we need to add quickfix and fixall kinds for each diagnostic type.
Support a per-kind suggested fix, and fix a small issue in setting the
analyzer for a fixall code action.

Fixes golang/go#45111

Change-Id: I6bb32c9aa7427b690f42910672d3139579e84478
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2021-03-24 23:51:27 +00:00
Heschi Kreinick 11e8f6b853 internal/lsp: refactor codeAction
As much as possible, try to unify the codeAction code paths. We always
run analysis now. And rather than assuming certain categories of
analyzers will generate certain kinds of code actions, mark them
explicitly and use that information to filter the actions afterward.

Change-Id: I8154cd67aa8b59b2a6c8aa9c3ea811de2e190db4
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2021-03-10 19:04:36 +00:00