Commit Graph

325 Commits

Author SHA1 Message Date
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
Run-TryBot: Suzy Mueller <suzmue@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
2022-06-09 20:27:29 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/406135
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>
2022-06-01 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.

Change-Id: I9985492274c88e6a13e6d62dadab5595c75c7840
Reviewed-on: https://go-review.googlesource.com/c/tools/+/406134
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-06-01 19:19:15 +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>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
2022-05-31 14:14:38 +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
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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/404574
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-05-06 16:33:28 +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
Run-TryBot: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2022-05-04 22:58:41 +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>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-20 15:33:22 +00:00
pjw 1f763dfd2e internal/lsp: add semantic tokens for arrows in declarations
Fixes: golang.org/#52024

Change-Id: Ib79a839f9bdeaef1250925add69dea3ae32e1cae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/397479
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Peter Weinberger <pjw@google.com>
2022-04-07 14:52:22 +00:00
Hana b7db7eb670 internal/lsp/cmd: add vulncheck command
Usage: gopls vulncheck <package_pattern>

It prints json-encoded command.VulncheckResult in stdout.

Change-Id: I752b3f06d7c6b2c7de68bd1221283205955c383f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/395676
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-03-24 22:38:00 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/360836
Trust: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2022-02-15 00:29:01 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/382274
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-02-07 15:39:03 +00:00
Ian Cottrell f6067dc943 gopls: cleanup the main help pages
This no longer has an invalid usage line, and mentions the help command.
It also mentions the no command form that is the same as serve.

For #41860

Change-Id: I9add50d295e1eb66152876617f27761a9441e67f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367842
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-02 14:57:28 +00:00
Ian Cottrell dfda270eba gopls: use the = form in flag parameter printing rather than a space
For #41860

Change-Id: I9956d06aa26df54f57a4fedb30b36fe39f19ee3e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367840
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-02 14:56:55 +00:00
Ian Cottrell 5ad7054788 gopls: add long forms for all the 1 rune flags
Also modify the printing so that it groups flags that work on the same
value into the same flag usage line.

For #41860

Change-Id: I97fdd3e64f24b22c15780b636789f512eb46ed2c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367838
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-02-02 14:56:23 +00:00
Ian Cottrell 217a9fc29a gopls: take control of the flag printing
Add a copy of flag.PrintDefaults so that we can make changes.
This CL does not actually modify anything (although it does have
to detect the private stringValue type a slightly different way)

For #41860

Change-Id: I19512041f9c1bfde56226aea48302cd63cf670e2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367837
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-02 14:52:21 +00:00
Ian Cottrell afd524fc39 gopls: clean up the help text
This makes lots of changes to make the help text more self
consistent, and fix up some broken things.

For #41860

Change-Id: I79f7f6ab12a3a833d15f53b3cd71208dfa1d6e10
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367835
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-02 14:52:08 +00:00
Ian Cottrell ec9a7decbe gopls: write out the raw usage text
This adds a small script and uses it to write all the help text
to files.
This will be used to show the diff of a collection of changes to
come.

For #41860

Change-Id: Iaef52365d421dd3c375d22ac5a1f7c5eb6b69ac2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/367834
Trust: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-02 14:51:55 +00:00
Robert Findley 3737ecd836 internal/lsp/fuzzy: consider whole word matching in SymbolMatcher
In the new SymbolMatcher, add an additional scoring feature that
considers whether the matching pattern streak is part of a whole-word
match. This differentiates matches of "foo" against "pkg.foo" and
"pkg.foobar".

For golang/go#50016

Change-Id: Ib84ff13eee0b7ec23143325592cef9a41be07375
Reviewed-on: https://go-review.googlesource.com/c/tools/+/376361
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Peter Weinberger <pjw@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-01-19 15:05:25 +00:00
pjw 68b574acb9 internal/template: identify template files by the templateExtensions option
Make the language id (sent from the client) 'gotmpl' equivalent to 'tmpl'

Wherever a view is known, use its options to determine which files
are template files. Whenever the client sends an explicit
languageID, use that.

Partially fixes golang/vscode-go#1957

Change-Id: I04cd630d6c6c80e0a78c2fafb6ddc1166ce86829
Reviewed-on: https://go-review.googlesource.com/c/tools/+/376854
Trust: Peter Weinberger <pjw@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-01-13 17:30:17 +00:00
Robert Findley e06c10712b internal/lsp: normalize interface{} to any in test comparisons
The switch to use any in standard library signatures breaks many of our
tests that match signature strings exactly. Fix this by normalizing
strings to use 'any' in place of interface{}, before comparing.

Updates golang/go#49884

Change-Id: If18ce1035b3206f37d7de6e584cf2c2cae9481c5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/370294
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: Russ Cox <rsc@golang.org>
2021-12-09 13:40:01 +00:00
Peter Weinberger 2dc275501c internal/lsp/protocol: update LSP definitions and stubs
There are some (presumably provisional) new RPCs, PrepareTypeHierarchy,
SuperTYpes, and Subtypes. ServerCapabilities has a corresponding field
TypeHierarchyProvider, and the client has TypeHierarchy which is
a TypeHierarchyClientCapabilities

The name of the return type of ApplyEdit has been changed from
ApplyWorkspaceResponse to ApplyWorkspaceResult.
(its content has not changed, just the name)

srver_gen.go and its generator helper/helper.go needed a small change
to avoid using _ as an argument.

Change-Id: I8fc828e69659e0333af686ec1dd138b0c09c1c62
Reviewed-on: https://go-review.googlesource.com/c/tools/+/353169
Run-TryBot: Peter Weinberger <pjw@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-10-05 16:44:45 +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
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-09-28 22:17:57 +00:00
Jean-Hadrien Chabran cd7c003cd3 internal/lsp: add support for hovering runes
Enable to hover runes found in basic literals in various forms.
When a rune is found, the hover message provides a summary composed of a
printable version (if it exists) of the rune, its codepoint and its name.

Behaviour varies slightly depending on the basic literal: rune literals
always display the summary when hovered, string literals only display it
when an escaped rune sequence is found to avoid providing unnecessary
information, and finally number literals only when expressed as a
hexadecimal number whose size ranges from one to eight bytes.

Fixes golang/go#38239

Change-Id: I024fdd5c511a45c7c285e200ce1eda0669a45491
Reviewed-on: https://go-review.googlesource.com/c/tools/+/321810
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Trust: Rebecca Stambler <rstambler@golang.org>
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-09-14 22:22:34 +00:00
Suzy Mueller 46d1522a5d internal/lsp: add extract to method code action
"Extract method" allows users to take a code fragment and move it
to a separate method. This is available if the enclosing function
is a method.

Change-Id: Ib824f6b79b13ca73532223283a050946c90a47e7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/330070
Trust: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-07-23 18:08:39 +00:00
Rob Findley 980829d8a1 internal/lsp/lsprpc: add an AutoDialer abstraction
Refactor the lsprpc package to move the logic for 'automatic' server
discovery into an AutoDialer abstraction, which both implements the v2
jsonrpc2 Dialer interface, and provides a dialNet method that can be
used for the existing v1 APIs.

Along the way, simplify the evaluation of remote arguments to eliminate
the overly abstract RemoteOption.

Change-Id: Ic3def17ccc237007a7eb2cc41a12cf058fca9be3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/332490
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2021-07-12 16:16:36 +00:00
Karthik Nayak d25f906682 internal/lsp: do not block on channel when there is an error
In `internal/lsp/cmd.(*connection).diagnoseFiles`, when we request for
`gopls/diagnoseFiles`, we are blocked on the channel even if there is an error.
In such a scenario, we've reach a deadlock since. Avoid this by checking for
error, existing if it exists and also closing the channel while we're at it.

Fixes golang/go#46251

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>

Change-Id: I4266ab3ac272a9ae3eac2084b70b6568b72c1984
GitHub-Last-Rev: 94bf2926a0f35d51d62643618a8072ef5a8b5225
GitHub-Pull-Request: golang/tools#324
Reviewed-on: https://go-review.googlesource.com/c/tools/+/329109
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Trust: Rebecca Stambler <rstambler@golang.org>
Trust: Heschi Kreinick <heschi@google.com>
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2021-06-18 18:34:00 +00:00
Rebecca Stambler 116feaea45 internal/lsp: move the progress tracker to the session
Sometimes, we may want to report progress from functions inside of the
cache package, so move the progress tracker to the session to allow for
that.

Change-Id: I15409577a7a5080e7f0224a95d159de42856ffa7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/319330
Trust: Rebecca Stambler <rstambler@golang.org>
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gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2021-06-16 01:01:29 +00:00
Marwan Sulaiman 4061312594 internal/lsp: add list_known_packages and add_import commands
This CL adds two new commands that let a client request a list of importable packages relative to a Go file and then select which import a programmer would like to add to said file.

Updates golang/go#43351

Change-Id: If12518874a92ed4167bdd711a92e03ee21c7b949
Reviewed-on: https://go-review.googlesource.com/c/tools/+/281412
Trust: Rebecca Stambler <rstambler@golang.org>
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-05-23 03:57:00 +00:00
pjw 062bf4eb8a internal/lsp: make ShowDocument RPC available to gopls
The window/showDocument RPC is now correctly classified as being
sent from the server to the client.

Change-Id: I659528af69662fb709242d326563d52070fd5702
Reviewed-on: https://go-review.googlesource.com/c/tools/+/315990
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: Rebecca Stambler <rstambler@golang.org>
2021-05-03 16:38:18 +00:00
Rob Findley 7b9993c5d2 internal/lsp/cmd: add a command-line command to start daemon debugging
Rename the 'inspect' command to 'remote', since it makes more sense for
the command to be scoped to interactions with the gopls remote. Add a
new subcommand 'debug' to start the debug server. Leave an aliased
'inspect' command for now. I'm 99% sure nobody is using it, so we can
remove the alias in a month.

Move some things around in the lsprpc package to improve factoring a
bit.

Fixes golang/go#45518

Change-Id: Ic6d64204611552e593dcbc1b5a347ccd27a4f40c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/309810
Trust: Robert Findley <rfindley@google.com>
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gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-27 13:49:53 +00:00
Rob Findley 7c93484b9a internal/lsp: add a command to start the debug server
The utility of the debug server is limited by the requirement to start
gopls with the `-debug` flag and then look in the logs to see which port
the debug server is bound to.

This CL adds a new custom command `gopls.startDebugging` to start the
debug server on demand if it isn't already running, and return its debug
address. It also does some gymnastics to make this turn on debugging for
any intermediate gopls forwarders, when using daemon mode.

For golang/go#45518

Change-Id: I48a90088f96aca54f34f93bedbfe864515320f61
Reviewed-on: https://go-review.googlesource.com/c/tools/+/309409
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2021-04-26 15:43:18 +00:00
pjw dbc8747628 internal/lsp/semantic: avoid doing semantic tokens for large files
LSP (and gopls) support both full-file semantic token requests and
requests for just a range, typically roughly what's visible to the user.
It can be slow to produce the full set for a very large file, so
this code now responds with an error if the file is bigger than
100,000 bytes. After getting this error, vscode, at least,
will stop asking for full requests and use range requests.

Alternatively, server capabilities could say gopls never responds to
full-file requests, but doing that doesn't stop vscode from asking for
them. Another possibility would be to fix a time limit (like 8ms) for
how long to spend generating full-file semantic tokens. That's tricky
to get right, but one could instead generate an error when there
are more than 4,000 semantic tokens (on my laptop, that's about 8ms.)

Large files are unusual; a simple size limit seems adequate for now.

Change-Id: Ieea0d16aad6e37cc4f14b1a6a7116a4e41197aae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/307729
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2021-04-20 17:53:17 +00:00
Rebecca Stambler b3556f0f83 internal/lsp: remove some unused parameters, mostly in the cache package
Change-Id: I0431843df432fa03a531e01dfc4fec537efadb15
Reviewed-on: https://go-review.googlesource.com/c/tools/+/301950
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2021-03-25 00:26:08 +00:00
Heschi Kreinick 144d5ced6b internal/lsp: run type error analyzers as part of diagnostics
Type error analyzers can be viewed as enhancing type errors, rather
than analyzers in their own right. Create a source.DiagnosePackage
function that combines the list/parse/typecheck diagnostics with type
error analyzers. This allows us to remove some special cases from the
analysis path, and is a first step in removing all the special
handling for analysis quick fixes.

Along the way:
Pass pointers to source.Analyzer after I spent half an hour chasing a
loop capture bug. Spend a further 2-3 hours chasing slowdown in the
command tests as a result.

Move Unnecessary tag generation into diagnostic creation rather than
as a mutating post-processing step that required cloning diagnostics.

Change-Id: Id246667a9dcf484dc79516f92d5524261c435794
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2021-03-03 21:51:40 +00:00
Rob Findley 8aef11fa67 internal/lsp: switch to the new command API
Fully switch to the new generated command API, and remove the old
dynamic command configuration.

This involved several steps:
 + Switch the command dispatch in internal/lsp/command.go to go through
   the command package. This means that all commands must now use the new
   signature.
 + Update commandHandler to use the new command signatures.
 + Fix some errors discovered in the command interface now that we're
   actually using it.
 + Regenerate bindings.
 + Update all code lens and suggested fixes to new the new command
   constructors.
 + Generate values in the command package to hold command names and the
   full set of commands, so that they may be referenced by name.
 + Update any references to command names to use the command package.
 + Delete command metadata from the source package. Rename command.go to
   fix.go.
 + Update lsp tests to execute commands directly rather than use an
   internal API. This involved a bit of hackery to collect the edits.
 + Update document generation to use command metadata. Documenting the
   arguments is left to a later CL.
 + Various small fixes related to the above.

This change is intended to be invisible to users. We have changed the
command signatures, but have not (previously) committed to backwards
compatibility for commands. Notably, the gopls.test and gopls.gc_details
signatures are preserved, as these are the two cases where we are aware
of LSP clients calling them directly, not from a code lens or
diagnostic.

For golang/go#40438

Change-Id: Ie1b92c95d6ce7e2fc25fc029d1f85b942f40e851
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2021-02-09 22:09:28 +00:00
pjw c3402e3c42 internal/lsp: update to latest version of LSP protocol
The Typescript source is still at version 3.16, but there are new
requests, more detailed client capabilities, and an attempt to be
more specific about ranges of number in the Typescript code.

Vscode defines types integer and uinteger (32-bit signed and unsigned),
so the Go code now uses int32 and uint32.

They've changed the use of TextDocument, so version information is sometimes
missing. cache/session.go:625 was changed correspondingly.

This CL also make CodeAction.Disabled into a pointer.

New requests or notifications:
DidCreateFiles, DidRenameFiles, DidDeleteFiles (notifications)
ShowDocument, WillCreateFiles,WillRenameFiles, WillDeleteFiles (request)

It's a lot of code; I've probably missed something.

Change-Id: I8449ad8473ac00947d0344c5f6133f9bd73b9e10
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2021-02-02 11:32:59 +00:00
Ajanthan Balachandran 68bf78a686 internal/lsp/cmd: improve help output of gopls subcommands
This cleans up empty flag documentation of gopls subcommands with no flags.

Fixes #43447

Change-Id: I4d6f689062af24db4e6c652ec9ce0bc1a4a42a8c
GitHub-Last-Rev: d917bdb6ea20117f28b93d72d706874b0c1fcfeb
GitHub-Pull-Request: golang/tools#269
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2021-01-25 18:56:18 +00:00
Roland Shoemaker fe37c9e135 all: replace all usages of os/exec with golang.org/x/sys/execabs
This change ensures that packages using exec.LookPath or
exec.Command to find or run binaries do not accidentally run
programs from the current directory when they mean to run programs
from the system PATH instead.

Change-Id: I5907aa630ff64012395a7eb472967a477d90f12e
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/949438
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Reviewed-by: Russ Cox <rsc@google.com>
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2021-01-19 22:25:03 +00:00
Heschi Kreinick 7905ceac4f internal/lsp/cmd: add licenses command
Add a "licenses" command that shows the licenses of included software.

As special cases, we print the Go license first, and the LSP
specification license second since we bundle a Go version of it.

Change-Id: I3575073766a458c214108643b2b550c407a118dd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/282112
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2021-01-08 19:50:35 +00:00
Rebecca Stambler 92778473c2 all: add copyright notices to files that are missing them
This was generated using this script:
https://play.golang.org/p/Nbo3qsk1ADH.

Change-Id: I94ab794b0874ad74a09bba5b3bb29d2c487a491b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/281853
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2021-01-06 17:23:47 +00:00
Eric Chiang 13ff2212a5 internal/lsp/cmd: include new name in rename help message
"gopls rename" appears to require a new name as a positional argument
but the command line help message doesn't include it. Update the help
message.

Change-Id: Iea769d2095b0642ebbacce128da336ec0dc56828
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2020-12-28 17:52:27 +00:00
Rebecca Stambler 008e477491 internal/lsp, gopls: recover from go-diff panics
This CL handles the panic in the sergi/go-diff library which has not
yet been resolved. We add an error return to the ComputeEdits function
and return an error if there is a panic. I'm not sure if this is the
best approach, but it does seem better than allowing the server to
crash.

A concern would be that the user wouldn't know why their code wasn't
being formatted, but hopefully they might look through the logs and
notice the error message. At least, other features would continue
working. The best fix will definitely be the fix for the panic, but that
is not yet available.

Threading through the error return was not pretty, but I thought it was
probably worth doing since it could be needed in other situations.

Updates golang/go#42927

Change-Id: I7f0c05eb296ef9e93b4de8ef071301cdb9dce152
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2020-12-17 16:56:54 +00:00
Heschi Kreinick a1a1cbeaa5 gopls/doc: generate JSON too, store as composite literal
Combine the generation of the API json with the generation of the
documentation. This cuts out a step from the generation process, and
allows us to depend on third-party modules. Use litter to print a
composite literal instead of JSON text, which will diff and merge much
better.

The only real drawback is that you have to "go run" from the gopls
module to avoid adding the extra deps to tools.

Sorry about the copy and paste; there's relatively little actual code
change, just a bit in doMain and rewriteAPI.

Change-Id: Iac936d31b7e52651b3b33f27497cfdbd133f1e76
Reviewed-on: https://go-review.googlesource.com/c/tools/+/274373
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2020-12-03 20:21:02 +00:00
Heschi Kreinick 9bc6a9788d internal/lsp: set -mod=readonly in most contexts
Go 1.16 will set -mod=readonly to be the default behavior of the go
command. This CL changes gopls' behavior to be more in line with that.

The model we end up with is more explicit about managing the go.mod.
Previously, adding an import for a package in the module cache but not
in scope would succeed, but add a warning with a quick fix. Now, the
import will fail, again with a quick fix, and the project will not
compile until the require is added. It also means that the go.sum needs
to be in sync. Previously, the go command would update the temporary
go.sum if the user's was out of date, and then we would discard those
changes. Now, loads will fail until the go.sum is brought into sync,
either by `go mod tidy` or the new "update go.sum" command.

The go.sum requirements affect many regtests. I added a DumpGoSum
function to the environment, which prints the txtar format go.sum file
that needs to be added to the workspace. We'll need to keep them in
sync, unfortunately. We could update them on the fly, but that would
slow down the regression tests somewhat and potentially mess up the test
setup. So I'm not sure what to do exactly. Perhaps maintain them
out-of-line in a separate file that could be auto-updated? Dunno.

I also had to add go directives to go.mod files to keep old Go versions
happy.

Multi-module workspace mode currently doesn't create a go.sum file at
all and is held back to the old behavior until it does.

Change-Id: Ib31afc17614afac2f5fbdf31c7fc03a90bd13e3a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/268597
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2020-12-03 19:32:01 +00:00
Rebecca Stambler fd09bd90d8 internal/lsp: use mode (GOPATH/modules) oriented error messages
We can offer better error messages to users in GOPATH mode. The Go
command has clear error messages indicating where it's looking for
its dependencies, so we can borrow these messages too.

The error message will look like this:
https://user-images.githubusercontent.com/5856771/100292862-bde8bb00-2f4f-11eb-9920-d945ee2c7e87.png

Change-Id: I39d367d0731ea5b7b7bb963699be3003b4fefe86
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2020-12-01 06:44:07 +00:00
Jean de Klerk 0e8b1ee181 gopls, internal/lsp: support fillstruct for partially-filled structs
This updates fillstruct to work even when the struct is partially
filled. User supplied fields are preserved but comments are blown away.

Preserving comments appears to be very hard with the current ast
library. One possible option is to do manual string shenanigans, but
after exploring that path it seems like A Bad Idea.

Fixes golang/go#39804

Change-Id: Iec0bb93db05d4d726dfa6c77a8139f53b14bcc77
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2020-11-30 20:22:45 +00:00
Rebecca Stambler c5a73c3035 Revert "internal/lsp: use mode (GOPATH/modules) oriented error messages"
This reverts commit ccae4fb384.

Reason for revert: Accidentally submitted too early

Change-Id: I5193554ee78560b1398f571afce56c66b00b7d63
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2020-11-30 18:45:08 +00:00
Rebecca Stambler ccae4fb384 internal/lsp: use mode (GOPATH/modules) oriented error messages
We can offer better error messages to users in GOPATH mode. The Go
command has clear error messages indicating where it's looking for
its dependencies, so we can borrow these messages too.

The error message will look like this:
https://user-images.githubusercontent.com/5856771/100292862-bde8bb00-2f4f-11eb-9920-d945ee2c7e87.png

Change-Id: I888b33804eec7f38c329ae2e4343b82fcc22f1df
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2020-11-30 18:27:53 +00:00
Rebecca Stambler 325b08a518 internal/lsp: rewrite the workspace symbol marker tests
The workspace symbol tests are not really resilient to changes and
did not generate/use golden files consistently. This made it really
tricky to switch the workspace symbols defaults.

To improve the workflow, consolidate the different kinds of tests into
one function, generate and use golden files, and require that all of the
workspace symbol queries appear in one file only. Also converted the
brittle workspace symbol regtest to a marker test.

Update golang/go#41760

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2020-11-24 17:38:01 +00:00