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
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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>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
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.
Fixesgolang/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>
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
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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
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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.
Fixesgolang/go#34893
Change-Id: I944ae24302f155b561047227f65bee34b160def1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221823
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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
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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#34111Fixesgolang/go#37570
Change-Id: Ie69e92d2821c829cdfc4f4ab303679a725f1f859
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222058
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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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
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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
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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
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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
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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
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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
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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.
Fixesgolang/go#37049
Change-Id: Iff736a7f6c3eaacda4237c2e4cf7926e9949dece
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220079
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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
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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
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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
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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.
Fixesgolang/go#33699.
Change-Id: Ie721e9a85478f3a12975f6528cfbd28cc7910be8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219483
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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
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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
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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
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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
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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
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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>
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
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We now carry around a debug instance in the app, and it manages the log file and
all telemetry
Change-Id: If4a51a36c38ef301b1b2bbda8e4c0a8d9bfc3c04
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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
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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
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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
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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
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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
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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
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err must be nil, as the code checks in line 117.
Change-Id: I23d87bdc9489c9ed249bfa1ac61b1ed722121c6a
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DefaultOptions was a value type, but held map values. This CL changes it
to a function that returns an Options value that has new instances of
all reference types. It would be better if this function returned a
pointer, but that change ended up being too large. I will need to
refactor handling of options later anyway, in order to support sessions
with differing options for golang.org/issues/34111.
This fixes a race in internal/lsp/tests: internal/hooks/analysis.go
mutates the Analyzers map.
See for example the trybots result at:
https://storage.googleapis.com/go-build-log/0d34f5f0/linux-amd64-race_4ecdf9c8.log
Change-Id: I41be450b590a3f3104ac9a1cb9cb312ea3ff7ff4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217077
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>
We should never be converting to a URI directly, in case it's encoded or
needs Windows-specific fixes.
Change-Id: I8af272f878e2e4faf428bd7b74b7cba4f65093a3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217086
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The command line tool doesn't go through JSON RPC, so it retains type
information that's stripped in the tests. Cut the parameters down to
basic types manually for now. But I don't know why the command line
tests send RPCs if the real thing doesn't.
Fixesgolang/go#36769.
Change-Id: I428b40478557ca35a7dae8d02bbcd990411f714f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216539
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Make sure to test both modes, as this is the second time we've
accidentally broken this.
Fixesgolang/go#36598.
Change-Id: I3993af3d106b18c76c44ada558b2c6cd9cbfcf17
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
A new test is added to verify that contextual logs are reflected back to
the LSP client. In the future when we are considering servers with
multiple clients, this test will be used to verify that client log
exporting is scoped to the specific client session.
Updates golang/go#34111.
Change-Id: I29044e5355e25b81a759d064929520345230ea82
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215739
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
The passed-in Context is not used, and creates the illusion of a startup
dependency problem: existing code is careful to pass in the context
containing the correct Client instance.
This allows passing in a source.Session, rather than a source.Cache,
into lsp server constructors.
Updates golang/go#34111
Change-Id: I081ad6fa800b846b63e04d7164577e3a32966704
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215740
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
There's no need to do this more than once per view.
Change-Id: I3160adc602764204155dd0e506fd554aeb55d639
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215321
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This change moves to our ultimate approach of diagnostics the snapshot
on every file change, instead of carefully picking which files and
packages to diagnose. Analyses are shown for packages whose files are
open in the editor. Reverse dependencies are no longer needed for
source.Diagnostics because they will be invalidated when the snapshot is
cloned, so diagnosing the entire snapshot will bring them up to date.
This even works for go.mod files because all of workspace-level `go list`s
will be canceled as the user types, and then we trigger an uncancellable
go/packages.Load when the user saves. There is still room for improvement
here, but it will require much more careful invalidation of metadata for
go.mod files.
Change-Id: Id068505634b5e701c6f861a61b09a4c6704c565f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214419
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This parameter was added to avoid sending a slew of empty diagnostics
for the initial workspace load. It's actually not needed anymore, as we
can just detect if we have previously sent diagnostics for the given
file, and if not we shouldn't send an empty diagnostic. This is true for
all cases, not just the initial workspace load.
Change-Id: I34a323bc0c0df79edd39630cd25577238b256266
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214287
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Switch the command line client, and its tests, away from the hardcoded
30-second timeout and to a newly-added custom request.
Inconveniently for us, the jsonrpc2 package only serializes requests,
not replies. (Notifications are requests for this purpose.) So, for a
flow like this:
diagnoseFiles -->
<-- publishDiagnostics
<-- publishDiagnostics
diagnoseFiles <-- (reply)
...there's actually no guarantee that the incoming requests will be
processed before the reply comes in -- it gets to jump the
serialization. The only way to guarantee previous notifications have
been processed is to send another request. I didn't feel like adding
nonstandard notification support, so I just send a fake diagnostic.
Error handling for untyped JSON is hideous so for now we just panic.
Nobody else should be calling these, or if they do it's at their own
risk.
Fixesgolang/go#36518.
Change-Id: I63f8df5bb627c9783314a0d38d2dac8721b3c320
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214583
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
When debugging multiple instances of gopls simultaneously, it is useful
to be able to inspect stateful debugging information for each server
instance, such as the location of logfiles and server startup
information.
This CL adds an additional section to the /info http handler, that
formats additional information related to the gopls instance handling
the request.
Updates golang/go#34111
Change-Id: I6cb8073800ce52b0645f1898461a19e1ac980d2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214803
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
A test variant for a package can only be reloaded by running go/packages
on the non-test variants import path with the -test flag. We need to
cache this import path in order to be able to reload a test package
on-demand.
Also, always ignore test main packages by detecting them in the
metadata.
Fixesgolang/go#36473
Change-Id: I6e5a61c8e73689212303ae09fa3aed4a2ee8762a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213660
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
We were ignoring errors in a few cases and returning incorrect errors in
the case of the command-line interface (no identifier found when there
were just no references). I think it is better for references to return
an error than incomplete results.
Change-Id: Id90bca58ebdd9f6a910853cb4ac5b6ab6bec57f8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213817
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
