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Commit Graph

227 Commits

Author SHA1 Message Date
Ian Cottrell
cf0cb92717 internal/telemetry: renaming to internal/event
internal/telemetry/event was renamed to internal/event/core
Some things were partly moved from internal/telemetry/event straight to
internal/event to minimize churn in the following restructuring.

Change-Id: I8511241c68d2d05f64c52dbe04748086dd325158
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229237
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-23 17:20:48 +00:00
Rebecca Stambler
5744cfde56 internal/lsp: fix imports issue with duplicate package decl
We shouldn't apply formatting fixes when we are
organizing imports.

Fixes golang/go#38412

Change-Id: I082f4d9a7d1d1dd571304733c287b0d5e90ea448
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228264
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-16 06:17:24 +00:00
Rebecca Stambler
5d8e1897c7 internal/lsp: fix erroneous documentation for struct fields
The fix is just a missing return.
Also clean up a staticcheck thing, regenerate the golden files.

Fixes golang/go#38417

Change-Id: I290b63df9d97211c59d6399fda7a273bc700fbdb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228297
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-15 03:45:06 +00:00
Rebecca Stambler
4d14fc9c00 internal/lsp: add type error fixes to existing diagnostics
This change is the first step in handling golang/go#38136. Instead of
creating multiple diagnostic reports for type error analyzers, we add
suggested fixes to the existing reports. To match the analyzers for
FindAnalysisError, we add an ErrorMatch function to source.Analyzer.

This is not an ideal solution, but it was the best one I could come up
with without modifying the go/analysis API. analysisinternal could be
used for this purpose, but it seemed to complicated to be worth it, and
this is fairly simple. I think that go/analysis itself might need to be
extended for type error analyzers, but these temporary measures will
help us understand the kinds of features we need for type error
analyzers.

A follow-up CL might be to not add reports for type error analyzers
until the end of source.Diagnostic, which would remove the need for the
look-up.

Fixes golang/go#38136

Change-Id: I25bc6396b09d49facecd918bf5591d2d5bdf1b3a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-08 01:45:16 +00:00
Ian Cottrell
ccaaa5c26f internal/jsonrpc2: dont add any handlers by default
This pushes the handler construction out to the user, allowing flexability of
use, and is the final stage of the switch to the new handler API.

Change-Id: Id2e61813a817df0d6e4d20dd47ce8c92b0ae87db
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227024
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-06 14:44:07 +00:00
Ian Cottrell
17cc17e0bb internal/jsonrpc2: remove the legacy interface
We can do cancelling at the top level handler now, it can drop the cancel
messages themselves before they enter the queue stage, and also track
all the events as they flow through it.
The ugly part is the OnCancelled interface, which is a bit clunky.

Change-Id: I3fa972198625fb3517fdecc740d1a3fdb19a188a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226959
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-06 14:43:58 +00:00
Ian Cottrell
6dc6d5718f internal/jsonrpc2: change handler to a function type
Handler is now a function type that mapps to what used to be the Deliver method.
The only handler that used other methods was Canceller, for now that still
exists as LegacyHooks. Once the handlers are fully cleaned up we should be able
to re-implement canceller as handler middleware.
Each connection is now only allowed one handler, and it is passed to the Run
method, but handlers are composable.

Change-Id: I370e0459df851bb9c9c2a679b99cff073b94489e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226479
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-06 13:48:45 +00:00
Rebecca Stambler
3304cfb00f internal/lsp: temporarily disable type error analyzers by default
If we release gopls/v0.4.0 soon, we should keep these new analyzers off
by default. They were just merged, so they haven't been used enough to
be enabled, I think. We'll turn them on by default for gopls/v0.5.0.

Also, ended up creating a helper function to check if analysis has been
abled (which fixed a small bug in FindAnalysisError), and another helper
function to enable all analyses for testing purposes.

Updates golang/go#38212

Change-Id: I5ee94b3582dfc0863978650fc6ce51bfa0606c13
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226962
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-04-02 16:54:32 +00:00
Ian Cottrell
80f63e2b9b internal/lsp: rewrite the stats using the newer telemetry features
This allows us to reduce the handler interface and delete the telemetry handler.
It is also safer and faster, and can be easily disabled along with the rest of
the telemetry system.

Change-Id: Ia4961d7f2e374f7dc22360d6a4020a065bfeae6f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225957
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-31 00:50:33 +00:00
Rohan Challa
31583a0dbb internal/lsp/tests: remove ellipses from test names
This change makes working with tests easier by trimming the folder name
up to "testdata". This will remove any ellipses from the test folder name.

Fixes golang/go#38103

Change-Id: I33b931e527de63713b8fc370c50b1c382796b2b8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226377
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-30 17:55:17 +00:00
Rob Findley
17a19b5fe7 internal/lsp/cmd: add a flag to disable telemetry
govim integration tests (and probably some real user sessions) are
broken because telemetry metrics are not threadsafe, resulting in an
index out of range panic.

Fix this by adding a flag (labeled temporary) to disable telemetry
export.

Also temporarily update govim to master to pick up some fixes, and run
only the -short tests to avoid timeouts.

Updates golang/go#38042

Change-Id: I584e5d200c2f732bd4024002ee6253d09623b29f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226057
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-03-27 18:51:17 +00:00
Daisuke Suzuki
d58d27dcbb tools/gopls: add cmd support for workspace_symbol
This change adds command line support for workspace/symbol.
Symbols are formatted as '{span} {name} {type}'.

$ gopls workspace_symbol -matcher fuzzy 'wsymbols'
$
$ workspacesymbol/a/a.go:5:7-31 WorkspaceSymbolConstantA Constant
$ workspacesymbol/b/b.go:5:6-28 WorkspaceSymbolStructB Struct

Optional arguments are:
-matcher, which specifies the type of matcher: fuzzy, caseSensitive, or caseInsensitive.
The default is caseInsensitive.

Updates golang/go#32875

Change-Id: Ieef443b13710f9c973210e58f66ab7679f258b30
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224677
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 19:59:04 +00:00
Rebecca Stambler
6fc5d0bc36 internal/lsp: print view-specific environment
For debugging purposes, we print the output of `go env` on start. Now,
we print a view-specific `go env`, which will helps us when debugging
multi-project workspaces. Additional information included: the folder of
the view, if the view has a valid build configuration, and the build
flags for the view.

Updates golang/go#37978

Change-Id: Iadffd46f8ac5410971558a304b8bbcb2f9bdbcc3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225137
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-24 20:15:47 +00:00
Rebecca Stambler
0d839f3cf2 internal/lsp: remove completion commands
The next version of VS Code Go has to be released before this can be
released.

Fixes golang/go#37966

Change-Id: I6b97f2a3ff9c8400ae85b815d8bf83a9b12b1069
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224518
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2020-03-21 22:47:14 +00:00
Daisuke Suzuki
521f4a0cd4 internal/lsp/cmd: fix definition test to run independently
definition.Run requires a nil check of opts before applying to avoid
panic, and test must be run with markdown enabled.
When running 'go test' without -run flag, connection.initialize() was
not called and there was no problem because the default value of
Options.PreferredContentFormat was Markdown.
In addition, currently using the same connection despite different
options, therefore make to use a different connection for different
options.

Change-Id: I6ef773c14cbdcae621da9295d4c618c3aff0beee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222497
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-19 21:04:07 +00:00
Rob Findley
9a0fabac01 internal/lsp: fix errors found by staticcheck
While experimenting with different static analysis on x/tools, I noticed
that there are many actionable diagnostics found by staticcheck. Fix the
ones that were not false positives.

Change-Id: I0b68cf1f636b57b557db879fad84fff9b7237a89
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222248
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-19 19:20:54 +00:00
Marwan Sulaiman
3e76bee198 x/tools/gopls: add support for $/progress functionality
This CL adds support for sending progress notifications through $/progress
calls as well as being able to cancel them through window/workDoneProgress/cancel.
This feature is only supported in clients running LSP 3.15 and therefore the initialize
request will check for client capabilities for its progress support.

Updates golang/go#37680

Change-Id: Iff8c016694746a9dd553e5cc49444df7afcc21f5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222981
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-16 21:25:24 +00:00
Rob Findley
c312e98713 gopls/doc: update daemon.md and remove 'experimental' caveats
Now that the feature-set is relatively complete for running gopls in
daemon mode, daemon.md is updated to reflect the new features and to
remove some of the experimental warnings. Similarly the `-remote` flag
is made more welcoming.

The feature still needs more usage, but it shouldn't be considered
experimental anymore.

Fixes golang/go#34111

Change-Id: I994fc8f9f84bf856f24e1eadabd73c503267e804
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222717
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-12 19:44:00 +00:00
Rob Findley
30fd94b347 internal/lsp/lsprpc: expose configuration for auto-started daemon
Three new flags are added to the serve command, and threaded through to
the LSP forwarder:
 -remote.listen.timeout: -listen.timeout for the auto-started daemon
 -remote.debug: -debug for the auto-started daemon
 -remote.logfile: -logfile for the auto-started daemon

As part of this change, no longer enable debugging the daemon by
default.

Notably none of this configuration affects serving, so modifying this
configuration has been chosen not to change the path to the automatic
daemon. In other words, this configuration has effect only for the
forwarder process that starts the daemon: all others will connect to the
daemon and inherit whatever configuration it had at startup. This should
be OK, because in the common case this configuration should be static
across all clients (e.g., many Vim sessions all sharing the same
.vimrc).

Exposing this configuration made the signature of lsprpc.NewForwarder
a bit hard to understand, so I decided to go ahead and switch to a
variadic options pattern for initializing both the Forwarder and
StreamServer, the latter just for consistency with the Forwarder.

Updates golang/go#34111

Change-Id: Iefb71e337befe08b23e451477d19fd57e69f36c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222670
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-12 19:43:16 +00:00
Rob Findley
bd435c612c internal/lsp/cmd: add an inspect verb
Add a new toplevel `inspect` verb to the gopls command, to expose the
internal state of a running gopls server. For now, this verb exposes a
single subcommand `sessions`, which lists some information about current
server sessions on a gopls daemon.

This can be used even if the debug server is not running, which will
become the default in a later CL.

Updates golang/go#34111

Change-Id: Ib7d654a659fa47280584f9a7301b952cbccc565a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222669
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-12 17:21:45 +00:00
Rohan Challa
e4e22f76d0 internal/lsp: support when hierarchicalDocumentSymbolSupport is false
This change adds support when hierarchicalDocumentSymbolSupport is false, this can happen with editors who have not supported textDocument/DocumentSymbol. As a result, these older lsp clients need to recieve []protocol.SymbolInformation rather than []protocol.DocumentSymbol. This change required some changes to internal/lsp/cmd to handle not knowing which type it is receiving, this required manual parsing inside of cmd/symbols.go.

Fixes golang/go#34893

Change-Id: I944ae24302f155b561047227f65bee34b160def1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221823
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-06 18:17:37 +00:00
Rohan Challa
a0897bacdd internal/lsp/cmd: improve flexibility of suggested fixes
This change adds support for passing a span to cmd/suggested_fix.go, originally it would just take the filename and apply all the fixes for that file. Now, it can also take just a span within that file and only apply the fixes relevant to that span.

The //@suggestedfix marker now contains an extra parameter to specify which type of codeaction is expected.

Change-Id: I4e94b8dad719f990dc2d0ef3c50816f70f59f737
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222137
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-06 14:31:35 +00:00
Rob Findley
de023d59a5 internal/lsp/protocol: unmarshal to pointers when dispatching requests
With #34111, we are forwarding the LSP from one gopls instance to
another. This exposed an asymmetry in our LSP dispatching: for both
ClientDispatcher and ServerDispatcher, we unmarshal to non-nil response
structs. This means that when forwarding the LSP, we translate empty
JSON responses (corresponding to nil values) into the non-nil zero
value.

This causes problems for some editors, as reported in #37570. Fix it by
instead unmarshaling to a pointer.

This is, of course, a somewhat dangerous change. I fixed the one NPE
that occurred in tests, and have done some mild manual testing.  I
wouldn't be surprised if we discover more NPEs later on, but I still
think this is the right change to make.

Updates golang/go#34111
Fixes golang/go#37570

Change-Id: Ie69e92d2821c829cdfc4f4ab303679a725f1f859
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222058
Reviewed-by: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-05 22:45:36 +00:00
Ian Cottrell
4183ba16a9 internal/lsp: move the debug.Instance onto the Context
This allows us to register a telemetry exporter that works with mulitple active
debug instances.
It also means we don't have to store the debug information in our other objects.

Change-Id: I9a9d5b0407c3352b6eaff80fb2c434ca33f4e397
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221558
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-03 22:54:53 +00:00
Rohan Challa
c4f5635f10 internal/lsp: add an upgrade all dependencies codelens
This change adds an upgrade all dependencies codelens on the go.mod file if there are available upgrades.

Updates golang/go#36501

Change-Id: I86c1ae7e7a6dc01b7f5cd7eb18e5a11d96a3acc1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221108
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-02 21:30:18 +00:00
Rob Findley
9ffc0ab4ef internal/jsonrpc2: add an idle timeout for stream serving
When running gopls against an automatically started remote instance, we
want the lifecycle of the remote to be detached from that of its
clients, so that it doesn't shut down while clients are still connected.
On the other hand, a gopls process can consume significant resources, so
we don't want it to remain when there are no more connected clients.

The jsonrpc2 package is updated to support the concept of idle timeout:
a duration after which the server is shut down when there are no
connected clients. This is exposed in the gopls serve command via the
-listen.timeout flag.

Update golang/go#34111

Change-Id: Id62b3d4a2fa66de2c9306d130ca431717f01d1e5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220281
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-24 23:06:35 +00:00
Rob Findley
a208025ccb internal/lsp/lsprpc: automatically resolve and start the remote gopls
Most users will not want to manage their own gopls instance, but may
still want to benefit from using a shared instance.

This CL adds support for an 'auto' network type that can be encoded in
the -remote flag similarly to UDS (i.e. -remote="auto;uniqueid"). In
this mode, the actual remote address will be resolved automatically
based on the executing environment and unique identifier, and the remote
server will be started if it isn't already running.

Updates golang/go#34111

Change-Id: Ib62159765a108f3645f57709b8ff079b39dd6727
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220137
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-24 22:51:55 +00:00
Rob Findley
20f46356b3 internal/lsp/lsprpc: add a handshake between forwarder and remote
In the ideal future, users will have one or more gopls instances, each
serving potentially many LSP clients. In order to have any hope of
navigating this web, clients and servers must know about eachother.

To allow for such an exchange of information, this CL adds an additional
handler layer to the serving configured in the lsprpc package. For now,
forwarders just use this layer to execute a handshake with the LSP
server, communicating the location of their logs and debug addresses.

Updates golang/go#34111

Change-Id: Ic7432062c01a8bbd52fb4a058a95bbf5dc26baa3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220081
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-24 22:51:04 +00:00
Rob Findley
e02f5847d1 internal/lsp/debug: move all debug state onto the Instance
For testability, and to support the exchange of debug information across
Forwarder and server, it is helpful to encapsulate all debug information
on the instance object.

This CL moves all state in the debug package into a new 'State' type,
that is added as a field on the debug.Instance. While doing so, common
functionality for object collections is factored out into the objset
helper type.

Also add two new debug object types: Client and Server. These aren't yet
used, but will be in a later CL (and frankly it was easier to leave them
in this CL than to more carefully rewrite history...).

Updates golang/go#34111

Change-Id: Ib809cd14cb957b41a9bcbd94a991f804531a76ea
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220078
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-24 22:50:47 +00:00
Rebecca Stambler
55b11c713e internal/lsp: clear diagnostics for deleted files
Diagnostics should be cleared for files which are (1) deleted on disk
and not open in the editor, and (2) closed and only open in the editor.

Enable the corresponding regression test, and fix a few issues raised by
staticcheck.

Fixes golang/go#37049

Change-Id: Iff736a7f6c3eaacda4237c2e4cf7926e9949dece
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220079
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-19 20:26:41 +00:00
Rohan Challa
7c4b6277d7 internal/lsp: add module versions from "go list" to pkg.go.dev links
This change appends to the pkg.go.dev link the version of the module that is being used. To get this functionality, go/packages.Package now contains a module field which gets populated from the "go list" call. This module field is then used to get the version of the module that we are linking to.

Updates golang/go#36501

Change-Id: I9668a6da0fd3ec8f4cde017986419c8d28196765
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219079
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-19 19:55:21 +00:00
Rob Findley
5fb17a1e7b internal/jsonrpc2: support serving over unix domain sockets
For tests (and perhaps later, for daemon discovery), unix domain sockets
offer advantages over TCP: we can know the exact socket address that will be
used when starting a server subprocess. They also offer performance and
security advantages over TCP, and were specifically requested on
golang.org/issues/34111.

This CL adds support for listening on UDS, and uses this to implement an
additional regtest environment mode that starts up an external process.
This mode is disabled by default, but may be enabled by the
-enable_gopls_subprocess_tests.

The regtest TestMain may be hijacked to instead run as gopls, if a
special environment variable is set. This allows the the test runner to
start a separate process by using os.Argv[0]. The -gopls_test_binary
flag may be used to point tests at a separate gopls binary.

Updates golang/go#36879
Updates golang/go#34111

Change-Id: I1cfdf55040e81ffa69a6726878a96529e5522e82
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218839
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-19 16:14:01 +00:00
Rob Findley
b320d3a0f5 internal/jsonrpc2/servertest: support both TCP and pipe connection
Update the servertest package to support connecting to a jsonrpc2 server
using either TCP or io.Pipes. The latter is provided so that regtests
can more accurately mimic the current gopls execution mode, where gopls
is run as a sidecar and communicated with via a pipe.

Updates golang/go#36879

Change-Id: I0e14ed0e628333ba2cc7b088009f1887fcaa82a5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218777
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-16 19:22:41 +00:00
Heschi Kreinick
5916a50871 internal/lsp: check for file URIs on LSP requests
In general, we expect all URIs to be file:// scheme. Silently ignore
requests that come in for other schemes. (In the command-line client we
panic since we should never see anything else.)

The calling convention for beginFileRequest is odd; see the function
comment.

Fixes golang/go#33699.

Change-Id: Ie721e9a85478f3a12975f6528cfbd28cc7910be8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219483
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-14 22:51:26 +00:00
Heschi Kreinick
f7b8cc7bd0 internal/span,lsp: disambiguate URIs, DocumentURIs, and paths
Create a real type for protocol.DocumentURIs. Remove span.NewURI in
favor of path/URI-specific constructors. Remove span.Parse's ability to
parse URI-based spans, which appears to be totally unused.

As a consequence, we no longer mangle non-file URIs to start with
file://, and crash all over the place when one is opened.

Updates golang/go#33699.

Change-Id: Ic7347c9768e38002b4ad9c84471329d0af7d2e05
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219482
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-14 22:51:03 +00:00
Rob Findley
0fd2d649e6 internal/lsp/lsprpc: add an LSP forwarder and regtest environment
Add a new Forwarder type to the lsprpc package, which implements the
jsonrpc2.StreamServer interface. This will be used to establish some
parity in the implementation of shared and singleton gopls servers.

Much more testing is needed, as is handling for the many edge cases
around forwarding the LSP, but since this is functionally equivalent to
TCP forwarding (and the -remote flag was already broken), I went ahead
and used the Forwarder to replace the forward method in the serve
command. This means that we can now use the combination of -listen and
-remote to chain together gopls servers... not that there's any reason
to do this.

Also, wrap the new regression tests with a focus on expressiveness when
testing the happy path, as well as parameterizing them so that they can
be run against different client/server execution environments. This
started to be sizable enough to warrant moving them to a separate
regtest package. The lsprpc package tests will instead focus on unit
testing the client-server binding logic.

Updates golang/go#36879
Updates golang/go#34111

Change-Id: Ib98131a58aabc69299845d2ecefceccfc1199574
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218698
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-14 14:21:06 +00:00
Rohan Challa
98b3097d01 internal/lsp: add codelens for go.mod dependency upgrades
This change adds a code lens for go.mod files that will let a user know if a module can be upgraded, once it is clicked gopls will run a command to update that module.

Updates golang/go#36501

Change-Id: Id22b8097ede4972cf73bc029ec927544a71b7150
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218557
Run-TryBot: Rohan Challa <rohan@golang.org>
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2020-02-14 14:15:08 +00:00
Daisuke Suzuki
885dec1b2d internal/lsp/source: make matchers selectable in WorkspaceSymbols
This change allows to use fuzzy or case-sensitive matchers in addition
to case-insensitive when searching for symbols.
Matcher is specified by UserOptions.Matcher just like Completion.

Updates golang/go#33844

Change-Id: I4000fb7984c75f0f41c38d740dbe164398032312
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218737
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-02-13 22:46:20 +00:00
Peter Weinberger
e3acd584e2 internal/lsp: two trivial cleanups from CL 219077
Change-Id: Ia55bfc4d8283589a7a70e2b7b2ed3265ead18d62
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219378
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-13 21:22:11 +00:00
Peter Weinberger
63d1300efe internal/lsp: change return type of PrepareRename to *Range
PrepareRename used to return interface{}, but now returns the more
precise result *Range.

Almost all the changes in code.ts come from vscode reformatting it.
The sole substantive change is in goUnionType, near line 685.

Change-Id: If575cb166f26962d24261e79f9d958006011402e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219077
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-13 20:00:52 +00:00
Rob Findley
f41547ceaf internal/lsp/debug: fix early closure of logfile
As of https://golang.org/cl/218457, logs are not being captured because
the logfile is prematurely closed due to the scope of the deferred
closure changing.

Change-Id: I1754e5555025c7b2a5da58f621184d6740fd03cb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219080
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-11 18:05:03 +00:00
Heschi Kreinick
b0390335f4 internal/lsp/debug: write debug info for large goplses
We've had various reports of high memory usage in gopls. Catching it in
the act can be difficult, so check every second and write relevant
profiles to os.TempDir every time the heap reaches a new watermark.

Note that the logging in this package is broken. I didn't fix it, so
nobody will know this is happening until we tell them. So it goes.

Change-Id: I972d7ccfe5308658f86dde717465f0e0151b396d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218858
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-10 22:37:59 +00:00
Ian Cottrell
bdd8440908 internal/lsp: move all debugging support to the debug package
We now carry around a debug instance in the app, and it manages the log file and
all telemetry

Change-Id: If4a51a36c38ef301b1b2bbda8e4c0a8d9bfc3c04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218457
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-02-10 18:44:17 +00:00
Ian Cottrell
59bd84bb0c internal/lsp: change debug instance to a struct
We now build an instance and invoke methods on it.
This is a step towards removing some global state,
allowing multiple instances in one process and cleaning
up some telemetry handling.

Change-Id: I067469fed39c96653fffe96945c79193e86458d8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218157
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-02-07 11:26:02 +00:00
Rohan Challa
6fdc5776f4 internal/lsp: add quickfixes for missing dependencies in go.mod
This change adds quick fixes for diagnostics in .go files, specifically for diagnostics that deal with imported packages that are not declared in the go.mod file. These quick fixes will automatically add the dependency in the go.mod file and format the file if there are any issues.

Updates golang/go#31999

Change-Id: Iab151ce96194fae4b1995859aec416c5473da6e3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215898
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-07 00:16:14 +00:00
Rob Findley
c29062fe1d internal/lsp: refactor LSP server instantiation
Previously, the process of instantiating and running the LSP server was
sharded across the lsp, protocol, and cmd packages, and this resulted in
some APIs that are hard to work with. For example, it's hard to guess
the difference between lsp.NewClientServer, lsp.NewServer,
protocol.NewServer (which returns a client), and protocol.NewClient
(which returns a server).

This change reorganizes Server instantiation as follows:

 + The lsp.Server is now purely an implementation of the protocol.Server
   interface. It is no longer responsible for installing itself into the
   jsonrpc2 Stream, nor for running itself.

 + A new package 'lsprpc' is added, to implement the logic of binding an
   incoming connection to an LSP server session. This is put in a
   separate package for lack of a clear home: it didn't really
   philosophically belong in any of the lsp, cmd, or protocol packages.
   We can perhaps move it to cmd in the future, but I'd like to keep it
   as a separate package while I develop request forwarding.

   simplified import graph:

    jsonrpc2 ⭠ lsprpc ⭠ cmd
               ⭩           ⭦
            lsp           (t.b.d. client tests)
           ⭩   ⭨
     protocol  source

 + The jsonrpc2 package is extended to have a minimal API for running a
   'StreamServer': something analogous to an HTTP server that listens
   for new connections and delegates to a handler (but we couldn't use
   the word 'Handler' for this delegate as it was already taken).

After these changes, I hope that the concerns of "serving the LSP",
"serving jsonrpc2", and "installing the LSP on jsonrpc2" are more
logically organized, though one legitimate criticism is that the word
'Server' is still heavily overloaded.

This change prepares a subsequent change which hijacks the jsonrpc2
connection when forwarding messages to a shared gopls instance.

To test this change, the following improvements are made:

 + A servertest package is added to make it easier to run a test against
   an in-process jsonrpc2 server. For now, this uses TCP but it could
   easily be modified to use io.Pipe.

 + cmd tests are updated to use the servertest package. Unfortunately it
   wasn't yet possible to eliminate the concept of `remote=internal` in
   favor of just using multiple sessions, because view initialization
   involves calling both `go env` and `packages.Load`, which slow down
   session startup significantly. See also golang.org/issue/35968.

   Instead, the syntax for `-remote=internal` is modified to be
   `-remote=internal@127.0.0.1:12345`.

 + An additional test for request cancellation is added for the
   sessionserver package. This test uncovered a bug: when calling
   Canceller.Cancel, we were using id rather than &id, which resulted in
   incorrect json serialization (as only the pointer receiver implements
   the json.Marshaller interface).

Updates golang/go#34111

Change-Id: I75c219df634348cdf53a9e57839b98588311a9ef
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215742
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-06 23:12:37 +00:00
Rebecca Stambler
6224300ba8 internal/lsp: remove unnecessary source.SignatureInformation type
We should just use the protocol.SignatureInformation type, as it's
essentially the same thing. Refactor tests a bit to make use of the
shared type.

Change-Id: I169949f6e23757ce0a6f54de36560c4c8e0479ad
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217731
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-02-06 19:05:38 +00:00
Rohan Challa
2529d2857a internal/lsp/tests: standardize testdata folder format
This change standardizes the folder structure for testdata that are used for testing the lsp. In particular, it uses the following format:
- dir
  - primarymod
    - .go files
    - packages
    - go.mod (optional)
  - modules
    - repoa
      - mod1
        - .go files
        -  packages
        - go.mod (optional)

As we can see, any folder inside of testdata should be of this format, where the primary test files with the markers are all located inside the primarymod folder. The modules folder is used to hold any potential dependencies that are used for testing.

A consequence of this change is that we can have one directory separated by folders, where each folder is it's own module, this allows us to use internal/lsp/tests with go.mod files. Now, tests.Load() will return an array of Data objects, where each object corresponds to one of the directories structured above.

Updates golang/go#36091

Change-Id: I437cc2a2a9fc1bac93779845737aa74383fbf9c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217541
Run-TryBot: Rohan Challa <rohan@golang.org>
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2020-02-06 14:14:23 +00:00
Daisuke Suzuki
6e8b36d2c7 internal/lsp: add support for workspace symbol
This change adds support for the LSP workspace/symbol. Unlike
documentSymbol, the target is symbols that exist not only in a specific
file, but also in the current or imported packages. It returns symbols
whose name contains the query string of the request(case-insensitive),
or all symbols if the query string is empty.

However, the following is not implemented:
- Setting of deprecated and containerName fields in SymbolInformation
- Consideration of WorkspaceClientCapabilities
- Progress support
- CLI support

Updates golang/go#33844

Change-Id: Id2a8d3c468084b9d44228cc6ed2ad37c4b52c405
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213317
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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2020-02-05 19:03:17 +00:00
Rohan Verma
1cc6d1ef6c tools/gopls: add cmd support for prepare_rename
This change adds command line support for prepare_rename.

Updates golang/go#32875

Change-Id: I7f155b9c8329c0faa26a320abab162730a7916ad
GitHub-Last-Rev: 118e846420d7c56fbf0e4f416c8fd6a52e9638a8
GitHub-Pull-Request: golang/tools#188
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207579
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-04 07:42:04 +00:00