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Commit Graph

1408 Commits

Author SHA1 Message Date
Ian Cottrell
7b212d60a1 internal/event: renaming the main event API functions
event.Log removed
event.Print -> event.Log
event.Record -> event.Metric
event.StartSpan -> event.Start

In order to support this core now exposes the MakeEvent and Export functions.

Change-Id: Ic7550d88dbf400e32c419adbb61d1546c471841e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229238
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-23 17:21:36 +00:00
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
72e4a01eba internal/lsp: refactor code for formatting signatures
The code for formatting function signatures is fairly confusing.
Factoring out an unexported signature type simplifies things a bit.
Hopefully we'll be able to pull out more formatting logic from the other
features. Ideally, I'd like to return to the separation between
internal/lsp/source and internal/lsp so that a formatting package can be
pulled out and used in internal/lsp.

Change-Id: I7428db5004eab371e46402188e0dc6bb30f0c425
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229318
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-22 20:52:58 +00:00
Rebecca Stambler
3d57cf2e72 internal/lsp: add regtest for golang/go#37984
This change also required the addition of a new run configuration -
WithEnv, which adds extra environment variables to the configuration.
Please let me know if this is the wrong approach.

Fixes golang/go#37984

Change-Id: Ied2a53a443dc74c7ed723b91765eeddc1a7c1c00
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229128
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-22 02:23:33 +00:00
Rebecca Stambler
4e4aced336 internal/lsp/regtest: add regtest for golang/go#38207
Fixes golang/go#38207

Change-Id: I78396814a2e6a3ccecc860953ac6892ffa1b68e8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226960
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-22 01:51:11 +00:00
Rebecca Stambler
504fe87a53 internal/lsp: add regtest for golang/go#38211
A few more updates to the regtest framework - add support for all
codeActions, not just organize imports. Also, return diagnostics from
env.Await to pass into code actions. Not sure if that's the correct way
to do it, so please let me know if there's a better way.

The test is for 1.14 only, since -modfile is only supported after 1.14.

Fixes golang/go#38211

Change-Id: I5cdd35e2ec06e2b2487d1f3491197030008be9c9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226958
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-22 01:32:14 +00:00
Rebecca Stambler
66008de356 internal/lsp/regtest: add regtest for golang/go#36951
Not sure when this got fixed, but confirmed manually and via a
regression test.

Fixes golang/go#36951

Change-Id: I7833a5d1119c34fd3fb45ea658e954eadbee750c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229129
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-21 18:57:00 +00:00
Ian Cottrell
7504fd2219 internal/lsp: fix broken lsp logs
ID's are now by value not pointer, which caused it to not use the Format
method, resulting in broken id strings
The id maps need to be crossover (set and get go to different maps for a given direction of message)

Change-Id: Ide2b63ec1b009ae3587ee10e8bce018732ea342c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229244
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2020-04-21 17:00:05 +00:00
Ian Cottrell
4b6a508a9c internal/lsp: merge the in and out protocol logging functions
The special cases were all removed by the previous changes to jsonrpc2 messages.
The only difference now is the "Recieved" vs "Sending" text prefix, so we just paramaterize the common function with that instead.

Change-Id: If6f8de39dca38041cf68a6b5506ff0482af3cb8e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228890
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-21 13:43:21 +00:00
Ian Cottrell
2dc4334630 internal/jsonrpc2: rewrite streams in terms of messages
messages are the atomic unit of communication, changing streams
to read and write whole messages makes the code clearer.
It also avoids the confusion about what should be an atomic
operation or when a stream should flush.

Change-Id: I4b731c9518ad7c2be92fc92211c33f32d809f38b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228722
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-21 13:42:58 +00:00
Paul Jolly
cfa8b22178 go/packages/packagestest: do not walk packages and their test variants
Currently, where a package has a test variant, we end up walking the
non-_test.go files twice: once when walking the package itself, the
second time when walking the test variant. In the gopls tests, this
means we end up double-counting the number of symbols (via the @symbol
annotation) in a package.

Extend the existing expect_test.go to demonstrate the problem is fixed
(a test which fails when the fix is not in place)

Change-Id: Ifd68b3d86e24f19d3f8efc3af71494b7d28b0acb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228761
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-21 04:27:24 +00:00
Paul Jolly
b4d5569d26 internal/lsp/tests: provide SymbolInformation.Name in @symbol annotations
In preparation for a later change where we alter the implementation of
the workspace Symbol method, we now specify the Name that should be used
when constructing a SymbolInformation value from a @symbol annocation.
There is no change in the test expectations.

Change-Id: I4ee5f714d6060aab2ee33ef18339504f443cecdc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228757
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-21 04:22:56 +00:00
Ian Cottrell
9f075f7bfe internal/lsp: switch the protocol logger to use the new jsonrpc2 message types
This saves it from having to know the wire format and understand the decoding
tricks.

Change-Id: I1f3ef3345ffee736a9d104f8ebfb436404d737c0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228721
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-20 21:06:19 +00:00
Ian Cottrell
434f7a8fef internal/jsonrpc2: add concrete types for Call, Notify and Response
The previous implementation was exposing the details of the wire format
and resulted in non idomatic go, detecting the presence of absence of
values in fields to deterimine the message type.
Now the messages are distinct types and we use type switches instead.
Request still exists as an interface to expose the shared behaviour of
Call and Notification, as this is the type accepted by handlers.
The set of messages is deliberately closed by using a private methods on the
interfaces.

Change-Id: I2cf15ee3923ef4688670c62896f81f760c77fe04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228719
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-20 21:05:32 +00:00
Rebecca Stambler
c07e33ef32 internal/lsp/source: enable type error analyzers
I had intended to enable these after gopls/v0.4.0 was released so that
people who test at master can try these out. Also, mark "fillreturns" as
high confidence so users can get it applied on save, much like
goreturns.

Change-Id: I71aa0b723b2e9b69474ceed7cb1d7da7c929d65d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228724
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-17 14:00:56 +00:00
Rebecca Stambler
e33929705b internal/lsp/regtest: enable test for golang/go#37195
I believe that other changes in gopls/v0.4.0 also fixed the issue that
this regression test was written for. Re-enable it, and change it to
assert that diagnostics are cleared.

Fixes golang/go#37195

Change-Id: I4538186ad288d9c6f70cc450f948b62f3868941f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228723
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-17 14:00:42 +00:00
Hana (Hyang-Ah) Kim
fc959738d6 internal/lsp: fill in ServerInfo in the initialize response
Fixes golang/go#38459

Change-Id: I98476ddc35c4ab2c43145083149454875cb4b041
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228398
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-16 21:44:02 +00:00
Rob Findley
f038785680 internal/lsp/regtest: generalize expectations beyond diagnostic messages
Due to the asynchronous and non-transactional nature of the LSP, writing
regtests requires waiting for certain conditions to be met in the client
editor. To this point, the only type of condition for which we supported
waiting was the presence of diagnostic messages, but we can in principle
wait for anything that is triggered by a server notification.

This change generalizes the notion of expectations to also encompass log
messages. Doing this required expanding the value returned from checking
expectations to include a new "Unmeetable" verdict, to account for cases
where we know that a condition will never be met (for example if it is a
negative assertion). This may be useful for diagnostics as well.

A test is added to demonstrate these new expectations, where the initial
workspace load fails due to unfetchable dependencies.

Additionally, some helper flags are added to help debug regtests without
a code change, by allowing changing the test timeout, printing logs, and
printing goroutine profiles.

Updates golang/go#36879

Change-Id: I4cc194e10a4f181ad36a1a7abbb08ff41954b642
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228399
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-16 21:39:01 +00:00
Rob Findley
92fa1ff4b1 internal/lsp/regtest: add support for custom test proxy data
Certain regtests require referencing external data. To support this, add
the ability to use a file-based proxy populated with testdata.

To expose this configuration, augment the regtest runner with variadic
options. Also use this to replace the Runner.RunInMode function.

Add a simple regtest that uses this functionality.

Updates golang/go#36879

Change-Id: I7e6314430abcd127dbb7bca12574ef9935bf1f83
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228235
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-16 19:38:27 +00:00
Rob Findley
405595e0b5 internal/lsp/fake: be more careful when closing the workspace
Closing the workspace has frequently been failing on Windows, due to
file locks held by the go command.

This change makes several tests more careful to check errors when
closing resources, and defers closing the regtest workspaces until the
entire test suite completes, at which point it is much more likely that
closing the workspace will succeed.

If this change results in test flakes on Windows, we should temporarily
demote errors in regtest.Runner.Close to a t.Log.

Updates golang/go#38490

Change-Id: Ibd2f7dd0e0e2faecfa0ca8c60237fc72e64f6719
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228231
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-16 19:25:41 +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
Rob Findley
6a72e3782c internal/lsp/fake: don't lock while calling formatting
While trying to be pragmatic, I simply locked the fake.Editor while
calling textDocument/formatting. This did indeed manifest later on as a
deadlock, so instead we release the lock but fail if the buffer version
changes while awaiting the formatting call.

Change-Id: I0ca24a502f3118e76de306a016449bbe665e70e4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228230
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-14 20:55:25 +00:00
Rob Findley
3bb7580c69 internal/lsp/fake: correctly configure the fake editor
Configuration was not being set correctly, because the configuration
response was not honoring the configuration section order.

Change-Id: I8418535b45e6a24fd8f0605d58cb370e22664f17
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228257
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-14 20:27:33 +00:00
Rob Findley
912958979a internal/lsp/regtest: put testing.T back in the test func signature
In https://golang.org/cl/225157, I removed the redundant T and Context
parameters from the regtest func signature in an effort to reduce
confusion. In hindsight, removing the testing.T did not reduce
confusion, because there is a T in the test signature anyway (and now
it's the wrong T!).

Change-Id: I2e84009e9cb33cd51055012cfef9fe4987e1b9bd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228229
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-14 18:42:46 +00:00
Rob Findley
a4a177c7d7 internal/lsp/diff/difftest: ignore for GOOS=illumos
illumos has a different copy of the `diff` executable, causing this test
to fail. Ignore it for this GOOS.

Updates golang/go#38414

Change-Id: I45ec5fcd9fd332977349bb6ba33d9ed09417a023
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228199
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-14 02:36:50 +00:00
Ian Cottrell
1f08ef6002 internal/jsonrpc2: split reply from request
reply is now passed to handlers separately from request, which allows it to be
substituted by handlers.
This also makes the handler signature much closer to http (which has
ResponseWriter)

Change-Id: I12be2e8e8b9bd508982ba43c9092709429284eaf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227839
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-13 01:58:12 +00:00
Ian Cottrell
b854406a88 internal/jsonrpc2: make the wire structures private
The wire structures do not need to be public, and making them so might make it
harder to keep the package correct without breaking changes if the protocol
changes in the future.

Change-Id: I03a5618c63c9f7691183d4285f88a177ccdd3b35
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227838
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-13 01:57:29 +00:00
Ian Cottrell
2595e72532 internal/jsonrpc2: replace NewErrorf with fmt.Errorf
We utilize error wrapping to recover the error codes when needed.
The code constants are also replaced by fully declared errors with
human readable messages.

Change-Id: I8edeb05f5028e99966e4ca28151f644f008d4e7d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227837
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-13 01:57:14 +00:00
Rebecca Stambler
79a7a3126e internal/lsp: add an extra bounds check to avoid nil pointers
A nil pointer was reported to the golang-tools group (see
https://groups.google.com/g/golang-tools/c/JrNTz8I6ifo/m/tcJRpek-AAAJ).
I think this bounds check should address it.

Updates golang/go#34433

Change-Id: I87352c269c65c844c86ebe9ee3fd2d041cc49ee9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227770
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-10 19:49:07 +00:00
Ian Cottrell
ae9902aceb internal/lsp: remove the CallCanceller
This required changing the jsonrpc.Conn.Call signature to also return the
request ID so it can be cancelled.
The protocol package now declares the Call function which wrapps up
Conn.Call and then sends a cancel message if the context was
cancelled during the call.
There is a small chance that a context can be cancelled on a
request that has already completed, but it is safe to do so.

Change-Id: Ic8040c193e1dd4ef376ad21194b1d0ea82145976
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227558
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-10 13:26:12 +00:00
Ian Cottrell
c92aeb7438 internal/lsp: improve ID formatting
Replace the String method with a Format method so we can use it for extra
formats.
Add some tests to make sure it is all correct

Change-Id: I39f361ffba036fad99c93f8c0944164f7cf199ec
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227486
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-10 13:25:36 +00:00
Rebecca Stambler
3bd20875a2 internal/lsp/cache: hide type errors if we fix up the AST
I was curious about why were logging errors during type-checking in
tests, and the answer turned out to be a bit more sinister than I
expected. We were getting type error messages without filepaths, so I
tried to reproduce it in the playground and wasn't able to. I realized
that these errors were coming from were coming from the "fixed" version
of the AST that we pass to the type checker.

Adding fake positions to our fake Cond statements trivially fixes the
logging issue, but it does nothing to handle the fact that the error
makes no sense to the user - because it applies to something that's not
in the source code. I figured we have two options: (1) skip type errors
for all packages with "fixed" ASTs, or (2) add something to the error
messages to indicate that the source code may not match. Starting with
(1) here, and if it becomes a problem, we can move to 2. All ASTs that
we fix have *ast.BadExpr in them, meaning that, by definition they have
parse errors which we will preferentially show those errors to users in
diagnostics (so I'm not sure how to test this).

Change-Id: I17733968aa15f989cdd3e4e7261c4f4fe9b97495
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227557
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-10 04:07:51 +00:00
Rebecca Stambler
c08edad6b3 internal/lsp: linkify IP addresses in textDocument/documentLink
Found golang/go#18824, which helped me understand what to do to fix this
issue. Also, changed some of the structure of the code to propagate
errors up to the top-level functions. I think this will help us deal
with actual errors vs. ignorable errors.

Didn't add tests because of golang/go#35880. Just prioritized that issue
for gopls/v0.5.0 - it's been biting us a lot lately.

Fixes golang/go#38285

Change-Id: I6962462818becb1bcedde4a5be3a2060e71c9389
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227559
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-10 03:56:59 +00:00
pjw
700752c244 internal/lsp/regtest: add test for issue 32149 (wrong package)
Gopls gets confused about the package if the package name is edited.
(See golang.org/issues/32149) This skipped test will succeed as long
as the bug is present.

Change-Id: Ic99ceda133f92f306baf94e2f8ad0381ed565814
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227760
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-09 21:04:53 +00:00
Rob Findley
bc09a2cac9 internal/lsp/regtest: output gopls logs on test failure
Wrap the regtest test servers to capture jsonrpc2 logs, so that they can
be printed on test failure.

There was a little bit of complication to implement this in the 'Shared'
execution mode, and since we're not really using this mode I just
deleted it.

Updates golang/go#36897
Updates golang/go#37318

Change-Id: Ic0107c3f317850ae3beb760fc94ae474e647cb78
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226957
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-04-09 19:58:30 +00:00
Rob Findley
97c4fbe514 internal/lsp/protocol: make loggingStream log writes concurrency-safe
Per the documentation for jsonrpc2.Stream Write must be safe for
concurrent use, but this isn't the case for the loggingStream.

Guard it with a mutex.

Change-Id: I384892b90cef950d518089421d05cf8040c6b233
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227487
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-04-09 19:31:31 +00:00
Ian Cottrell
6a75126720 internal/lsp: make tag iteration allocation-free
Change the tag iteration api to something less flexible
that allows for event iteration without allocation.

Change-Id: I212d45ebceea0183d1a61e6b611e0558649be60a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227301
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-04-08 13:20:38 +00:00
Rohan Challa
46bd65c853 internal/lsp/cache: add concurrency error check for go cmds
This change attempts to fix a concurrency error that would cause
textDocument/CodeLens, textDocument/Formatting, textDocument/DocumentLink,
and textDocument/Hover from failing on go.mod files.

The issue was that the go command would return a potential concurrency
error since the ModHandle and the ModTidyHandle are both using the
temporary go.mod file.

Updates golang/go#37824

Change-Id: I6cd63c1f75817c7308e033aec473966536a2a3bd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224917
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-08 03:22:09 +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
Rebecca Stambler
a3568bac92 internal/lsp: disable unimported completions for snippet tests
Turns out that these were already disabled in the
golang.org/x/tools/internal/lsp tests, which is why we only ever save
the failures in golang.org/x/tools/internal/lsp/source tests. Discussing
the reasons that this is necessary on the issue, but I think completion
scoring in general needs to be centralized and documented, so hopefully
we can handle this case as part of that larger fix.

Fixes golang/go#38269

Change-Id: Ie1b615315e417ab8211a3580cf8f27cbdc3b74e4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227417
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-07 14:37:52 +00:00
Rebecca Stambler
1fd976651f internal/lsp: make sure that gofmt -s analyses don't modify AST
The code for `gofmt -s` directly modifies the AST, since the ASTs are
not long-lived. Some of this code made it into our analysis
implementations, causing very strange bugs to manifest. Added a
regression test for this specific case.

Fixes golang/go#38267

Change-Id: I235620adcbf2bbc7027c6d83ff2c7fe74729062e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227299
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-06 21:01:14 +00:00
Ian Cottrell
903869a827 internal/lsp: make event directly implement TagMap
Makes Event implement TagMap directly, instead of
having to build an entirely new object.

Change-Id: I0c1e8638de3dc3347f60fd93af3df6b7f8387751
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227300
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-04-06 17:24:01 +00:00
Rebecca Stambler
ee2abff5cf internal/lsp: use one context throughout completion
I originally made this change to see if it would help with the timeouts.
Based on the TryBot results, it doesn't -- but I still think it's more
correct to have the contexts this way. It was my mistake to put the
context on the completer in the first place, I think.

Change-Id: Ib77c8f0ac0b0d0922b82db4120820fb96cb664f4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227303
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-06 16:51:37 +00:00
Ian Cottrell
7db14c95bf internal/lsp: rewrite the rpc debug page
Now it only uses the telemetry messages directly rather than the metric system.
This is much faster and more direct, and removes a blocker on improving the
metrics support.
Also fixes the fact that recieced and sent were the wrong way round before,
probably as an artifact of the old protocol logging code, and also removes
the bytes histogram which was a lie (it was a histogram of write sizes that
was presented as a histogram of message sizes)

fixes golang/go#38168

Change-Id: Ib1c3459c0ff1cf0c6087a828981e80c1ce1c5c1b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227139
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-06 14:44:18 +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
44c82bac18 internal/jsonrpc2: make it an error to fail to call Reply
It is now a programatic error to have a handler registered to a connection that
does not call reply for all messages, including notifications.
This normalizes the flow making the code easier to understand  and fixes a
couple of long standing hard to find bugs.

Change-Id: If41c39ece70e3bc64420abefac75ec647a8f8b37
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226838
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-06 13:49:19 +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
44a64ad78b internal/lsp, go/packages: don't log context cancellation errors
Instead of checking the context, check the error. This may expose some
errors that are not wrapped correctly. Replaced all uses of errors
with golang.org/x/xerrors.

Change-Id: Ia40160f8ea352e02618765f2a9415a4ece0dcd94
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227036
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-03 19:08:13 +00:00
Rebecca Stambler
bcf690261a internal/lsp: use context with timeout in all RunProcessEnvFuncs
The modifications in CL 226559 introduced a new call to
RunProcessEnvFunc that was not using the context with a timeout, so deep
completion tests were hitting the timeout early (I think?).

Also, fix a staticcheck warning that's been bugging me today.

Change-Id: Iac894f630ebfa1cbc5588ae3a5490a93fa53aba2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227057
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-02 22:33:21 +00:00
Rob Findley
8cb32c4661 internal/lsp/regtest: clean up module names and include github issues
A couple small improvements for regtests:
 - module names fixed to include a '.'. This was fixed for diagnostic
   tests already.
 - For regtests that were written to exercise specifig github issues,
   include the issue number in the test name.

Change-Id: I67da6d78dc166e854d2543cf63dac382202f9dbc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226844
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-02 21:48:35 +00:00
Rebecca Stambler
226fa68e9d internal/lsp: fix references for transitive dependencies
We need to search all transitive dependencies of a package, not just its
immediate imports.

Fixes golang/go#38100

Change-Id: I15b4dbe226ba851691ca0c95460c3648ede32f04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227030
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-04-02 20:53:30 +00:00
Rebecca Stambler
72cf467e29 internal/lsp: handle non-file:// URIs gracefully
Rather than panicking, we should fail to initialize the server.
Context: https://github.com/microsoft/vscode-go/issues/3081
Change-Id: Ic4622d435dffb77b72dc1e0214f0a1d181a6f767
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227032
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-02 20:53:07 +00:00
Rob Findley
8f5be0d382 internal/lsp/regtest: add functions to make diagnostic assertions easier
One of the tricky things about asserting on conditions in regtests is
the asynchronous nature of LSP. For example, as the LSP client we cannot
be sure when we've received all diagnostics for a given file.

Currently, regtests are implemented by awaiting specific diagnostic
expectations.  This means that if gopls generates diagnostics that do
not match those expectations, we can only time out the test.

Ideally, we would want to know that gopls is done generating all diagnostics
for the current file state. This is not possible without knowing the
status of diagnostics for. Barring this, we would want to know that
diagnostics are done for the current file version. Unfortunately, that
also is not possible, because a new version of file B can affect
diagnostics in file A.

So in lieu of this information, this CL exposes a few tools that can be
used to improve the experience of writing new regtests.

 - A new expectation is added: AnyDiagnosticAtCurrentVersion, that is
   satisfied if any diagnostics have been received for the current
   buffer version.
 - ExpectDiagnostics is added to Env, to help check whether the current
   diagnostics matches expectations.

Updates golang/go#38113

Change-Id: I48d2c3db87c13ac3ab424d01d9444cbc285af9e1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226842
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-02 20:10:23 +00:00
Rebecca Stambler
9fc00b0a7f internal/lsp: fix panic in builtin completions
Fixes golang/go#38091

Change-Id: I88ac6d3413de3dd9d235e2f2fca9b4a3f7127e0a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227026
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-02 17:53:26 +00:00
Heschi Kreinick
0a46fa39b0 internal/lsp/source: propose loaded unimported package names first
When proposing unimported package members, we start with packages loaded
in-memory first, for three reasons: we know that they're fast, they're
fully typed, and they're probably pretty relevant. I hadn't bothered
doing that for package names, because the first two reasons aren't very
relevant. But the third still is -- loaded packages are a pretty good
approximation for in module scope, etc.

With this change we do package names the same as members, so relevance
should be about as good. Not perfect, but nobody's complained much yet.

Fair bit of copy-and-paste, but I don't want to extend the
getAllCandidates abstraction outside of the imports package yet.

Updates #38104.

Change-Id: Ia479181607dff898baee3cd6aa84d1ab61715d19
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226559
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-02 17:48:25 +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
Rebecca Stambler
2d9ba733ec internal/lsp: add a mutex around the view's options
The options can be modified without the view being recreated, so we need
a mutex there.

Change-Id: I87e881835622a941fce98e4a1062aa41acd84fcb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227022
Reviewed-by: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2020-04-02 16:41:49 +00:00
Rebecca Stambler
69646383af internal/lsp/source: add a replacement for experimentalDisabledAnalyses
Change-Id: I5bff1db1d937ffdcb8bb4e36f05073238fbdeb5f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226961
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-04-02 14:48:50 +00:00
Rohan Challa
099440627f internal/lsp: add goreturns like functionality as quickfix
This change ports the functionality of https://github.com/sqs/goreturns
to be used as code actions on diagnostics that have missing
return values. It improves on the original goreturns functionality by:

- filling out empty return statements
- trying to match existing return values to the required return
  values and then filling in missing parameters

Fixes golang/go#37091

Change-Id: Ifaf9bf571c3bc3c61e672b0a2f725d8d734d432d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224960
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-04-01 19:27:44 +00:00
Rebecca Stambler
9d5940d493 internal/lsp: refactor and propagate errors from code actions
This change makes sure that all errors in code actions are returned,
instead of ignored. There is also a refactoring of the suggested fixes
for go.mod files so that we don't compute them unless there is already a
matching diagnostic.

Change-Id: I34afda0116f3cc7e47809d980a0171487787e55e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221221
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-31 20:20:46 +00:00
Rebecca Stambler
e18c1c42de internal/lsp: add a reg test to test "go mod init"
This change adds a RunGoCommand function to the workspace, which will
allow us to test how gopls responds when a certain go command is
executed. Add a test that checks behavior after "go mod init" runs.

Change-Id: I679249c1654b136d44187397b4196b8a10b5615e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226478
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-31 02:48:52 +00:00
Rebecca Stambler
a7c0594f4e internal/lsp: avoid logging context cancellation
This change adds a helper function that checks if the context is
canceled, and if so, doesn't log the error. Tried to use it everywhere
in internal/lsp where it fits, which resulted in changing a few pieces
of error handling throughout.

Updates golang/go#37875

Change-Id: I59cbc6f893e3b70cf84524d9944ff7f4b4febd78
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226371
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-31 01:46:33 +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
Ian Cottrell
657a652153 internal/telemetry: add a synchronization to telemetry
Some things that used to be safe due to the global
lock now need ther own synchronization primitives.

Fixes golang/go#38102

Change-Id: I03c692682d57620d96fe84b7dc74efae0d3f8f09
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226317
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-30 19:15:27 +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
Rebecca Stambler
9c79f685b7 internal/lsp: fix view rebuilding when go mod init runs
https://github.com/microsoft/vscode-go/issues/3076#issuecomment-605062933
inspired me to write a regression test for this case. Turns out we
weren't handling it correctly after all...

This change makes sure that we only rebuild the view once a new go.mod
file is saved, not just created. It also preserves the snapshot ID
number when the view is recreated so that diagnostic caching continues
to work as expected.

Change-Id: I63bd559c3bd33b91828171cd7ddb3d099c31cddb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226017
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-30 17:42:33 +00:00
Ian Cottrell
f61d083d3b internal/telemetry: use tags instead of special event fields.
Change-Id: I0e6a26c62bd1f6eaa07c38a06152cb7a0f2eedc2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225579
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-29 02:56:35 +00:00
Heschi Kreinick
82bb89366a internal/lsp/cache: validate workspace path case
On case-insensitive file systems, the editor may send us a path that
works but doesn't match the actual file's case. Then when we run go
list, we'll get mismatching paths and everything will break.

We can't reliably fix this problem: tracking what case the editor
expects is too difficult to be worth it. Instead, check the workspace
path and bail if it's mismatched.

Possibly we should also check files on DidOpen or such, but we can start
with this.

Updates golang/go#36904.

Change-Id: I7635c8136bf9400db4143a0f2fde25c39b5abc44
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225239
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-03-27 19:55:53 +00:00
Rohan Challa
eabff7e044 internal/lsp/analysis: add quickfix for "no new vars on left side"
This change adds a quick fix for type errors of the type "no new vars on left side of :=". It will replace the ":=" with an "=".

Updates golang/go#34644

Change-Id: I91af8eb82956104229c3b4f3d0fce60fdfdbb5ea
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225477
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 19:15:53 +00:00
Rohan Challa
f4fcf867e7 internal/lsp/analysis: add quickfix for "no result values expected"
This change adds a quick fix for type errors of the type "no result values expected". It will replace the return statment with an empty return statement.

Updates golang/go#34644

Change-Id: I3885748dfc69a2d19f8e7a2e81f36f6d0a20d25b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223666
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 18:57:59 +00:00
Rohan Challa
afab6edfad internal/lsp/source: remove unused parameters from functions
This change uses the new unusedparams analyzer to remove any unused parameters from functions inside of internal/lsp/source :)

Change-Id: I220100e832971b07cd80a701cd8b293fe708af3d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225997
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 18:57:18 +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
Rohan Challa
8f81e2e6d4 internal/lsp/analysis: add quickfix for undeclared variable
This change adds a quick fix for diagnostics that have an error message of the form "undeclared name: %s". It provides a quick fix to add a new variable with that name.

Updates golang/go#34644

Change-Id: I6534ee79d1770d1a62bac169c3c7e52e2443f39e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222237
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 18:31:06 +00:00
Rohan Challa
42235f6384 internal/lsp: add support for type error analyzers
This change adds support within gopls for analyzers that work with type errors to provide suggested fixes.

Updates golang/go#34644

Change-Id: Ia8929173752fda6bd84a9edaabd310e758f25fe8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222761
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 17:27:16 +00:00
Rebecca Stambler
eca45d481d internal/lsp: refactor references/rename/implementations
As part of investigating golang/go#38100, I noticed a few things that I
wanted to clean up. Mostly, for renames, we were calling
qualifiedObjAtProtocolPos twice, so I factored out a shared helper
function. I also added an error return for builtins so that callers
don't have to check.

Change-Id: I28c75c801cbec1611736af931cfa72befd219201
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-27 17:09:18 +00:00
Rohan Challa
5d86d385bf internal/lsp/analysis: add simplify-slice pass from "gofmt -s"
This is one of the simplifications that "gofmt -s" applies.
https://golang.org/cmd/gofmt/#hdr-The_simplify_command

A slice expression of the form:
	s[a:len(s)]
will be simplified to:
	s[a:]

Updates golang/go#37221

Change-Id: Ibd4dedaadc9b129d5d39524f0c1ccc8a95bf7e0d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223659
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-03-26 21:04:57 +00:00
Rohan Challa
e428a8eca3 internal/lsp/analysis: add simplify-composite-lit pass from "gofmt -s"
This is one of the simplifications that "gofmt -s" applies.
https://golang.org/cmd/gofmt/#hdr-The_simplify_command

An array, slice, or map composite literal of the form:
	[]T{T{}, T{}}
will be simplified to:
	[]T{{}, {}}

Updates golang/go#37221

Change-Id: I2dca46501983c8af3581c9319d973da5cf690388
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223660
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-03-26 20:50:12 +00:00
Rohan Challa
88b9c284fd internal/lsp/analysis: add pass for unused parameters
This change adds a pass that checks for unused parameters inside of a function. It is disabled by default.

Updates golang/go#36602

Change-Id: I9e8de3368f16f27e7816ec4ddb16935e1a05584e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222817
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 20:36:28 +00:00
Rohan Challa
94fe02cb5c internal/lsp/analysis: add simplify-range pass from "gofmt -s"
This is one of the simplifications that "gofmt -s" applies.
https://golang.org/cmd/gofmt/#hdr-The_simplify_command

A range of the form:
	for x, _ = range v {...}
will be simplified to:
	for x = range v {...}

A range of the form:
	for _ = range v {...}
will be simplified to:
	for range v {...}

Updates golang/go#37221

Change-Id: Ic6babbd0b8ab961ebb4d0d6df72df52d9acde6e7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223661
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 20:18:45 +00:00
Rohan Challa
e46a7b92c0 internal/lsp: add support for sourceFixAll analyzers
This change adds support for analyzers that have suggested fixes of the kind Source.FixAll. This will allow these fixes to be applied on save if the user desires.

To auto apply these fixes on save, make sure your settings.json looks like:

"[go]": {
	"editor.codeActionsOnSave": {
		...
		"source.fixAll": true,
		...
	},
	...
}

Update golang/go#37221

Change-Id: I534e4f6c8c51ec2848cf2899aab68f587ba68423
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223658
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 20:01:16 +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
Rohan Challa
02a6ca6dc3 internal/lsp: change disabledAnalyses setting to be general
This change removes the disabledAnalyses setting and replaces it with a more general feature named "analyses". This will allow users to opt in as well as opt out of analyzers that they do not find useful. This also updates some documentation to show users what analyzers gopls is using and which are enabled by default.

Change-Id: Id3239b4c4c9667e834f262c889270d14fdba0f93
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223662
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 19:30:34 +00:00
Rebecca Stambler
52ff224b76 internal/lsp: avoid possible nil pointer in references/rename
Noticed this in https://github.com/fatih/vim-go/issues/2786. I don't
think that this will fix the problem in this issue, but we should avoid
nil pointers as much as possible. Also, remove a bit of extra whitespace
so that the style closer matches that of the rest of the project.

Change-Id: I94b924ea14e4a296382e3e68c52eeb43f6cd86a6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225523
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-26 18:28:26 +00:00
Ian Cottrell
c9942794f0 internal/telemetry: render trace tags using typed keys
Type switch on the key and use it to get the value and decide how
to render it.
Use the same render for all debug tag printing.

Change-Id: Ia305fded7dcf05b57c5805f48bb5c22fa7def71f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225380
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-26 17:46:26 +00:00
Ian Cottrell
1249273038 internal/telemetry: make metrics take a strongly typed key
Now that keys are solidly typed, we can use them for the metrics.
This prevents accidentally using the wrong type of key, and
allows us to use the typed accesorrs rather than the raw value.

Change-Id: I553bd8e12128d3f00a3e926dbd3bfd420cd3f135
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225378
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-26 17:45:58 +00:00
Heschi Kreinick
e2e2519b1d lsp/source: create zero value ast.Exprs
In support of https://golang.org/cl/224960, add utility functions that
create zero value expressions for a given types.Type. There are probably
some bugs here but they pass the basic tests in that CL.

Known problems: it skips through type aliases, and can't handle
anonymous structs/interfaces. Hopefully it's pretty unusual to return
those.

Change-Id: I69a388d9ce9bd60bc230e4a3d2b30f581ec25698
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225177
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 17:41:01 +00:00
Rebecca Stambler
f53864d0db internal/lsp: remove command-line-arguments as a workspace package
If a package starts out as command-line-arguments, and then becomes
"valid" (i.e., gets a package declaration), we shouldn't continue to try
to diagnose "command-line-arguments". We should remove
"command-line-arguments" from workspace packages any time its metadata
is invalidated (assuming it may get added back if a file= query produces
it again).

Include the relevant regression test.

Fixes golang/go#37978

Change-Id: I7fc51edeb58007b4b4a163336cbeb752a53da322
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225317
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-25 20:31:30 +00:00
Ian Cottrell
224c947ce5 internal/telemetry: replace TagSet with TagMap and TagPointer
This separates the concerns of tag collections that have to be iterated
and tag collections that need lookup by key.
Also make it so that events just carry a plain slice of tags.
We pass a TagMap down through the exporters and allow it to be
extended on the way.
We no longer need the event.Query method (or the event type)
We now exclusivley use Key as the identity, and no longer have a
common core implementation but just implement it directly in each
type.
This removes some confusion that was causing the same key through
different paths to end up with a different identity.

Change-Id: I61e47adcb397f4ca83dd90342b021dd8e9571ed3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224278
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-25 01:00:44 +00:00
Ian Cottrell
62abcc1da2 internal/telemetry: change Exporter to be a function type.
Change-Id: Id410da20310baf4da6875de08e4449c7a6fb0250
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224277
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-25 00:42:15 +00:00
Rob Findley
1fc30e1f4c internal/lsp/regtest: remove redundant T and ctx params from regtest funcs
In an effort to be idiomatic, I made the regtest func signature
func(context.Context, testing.T, *Env), despite the fact that Env
already has a Context and a T.

This just ended up causing more confusion, as it's not clear which
Context or T to use. Remove this and just use the fields on Env.

Change-Id: I54da1fdfe6ce17a67601b2af8640d4d2ea676e8c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225157
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-24 20:18:24 +00:00
Rob Findley
4c83a7e07a internal/lsp/fake: add regexp search and replace
Expressing regtests in terms of textual coordinates is hard to read: the
reader ends up counting lines and characters to understand the text edit
or assertion.

To address, this, add two new functions for fake.Editor: RegexpSearch
and RegexpReplace, as well as a symmetric RegexpSearch function for
workspace files and wrappers for regtext.Env.

This allows expressing edits as well as buffer locations in terms of
easily scannable regexps.

An alternative solution to this problem is to integrate markers ala
packagestest. I tried this, but it ended up being cumbersome to
implement and less usable than regexps, due to the static nature of
markers: after the buffer has been edited all markers must be
updated.

Updates golang/go#36879

Change-Id: Iad087cf0d529737034197beef7b729816a159c69
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224757
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-24 20:17:55 +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
a5e5fedfe7 internal/lsp: stop showing workspace misconfiguration message
This is helpful for users to diagnose issues, but it annoys people who
have workspaces with both non-Go and Go projects. I'm going to spend
some more time thinking about this, particularly about which error
messages we should retry the initial workspace load for.

Updates golang/go#32394

Change-Id: I7d02b385da232914fe7342837dc3a9c4185399fd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225237
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-24 18:23:14 +00:00
Rebecca Stambler
6fb6f5a9fc internal/lsp: never reload command-line-arguments directly
I'm not sure if this is entirely the correct approach, but at the very
least we should never pass "command-line-arguments" to packages.Load. We
still need to cache packages with the path "command-line-arguments" to
avoid an excessive number of calls to packages.Load.

Updates golang/go#37978

Change-Id: I1b5263a3dab95aacd797f03f742069fd0c53619c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/225117
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-24 17:58:52 +00:00
jiacai2050
bbbf714b4a internal/lsp: fix nil pointer in 'go mod why' logic
Fixes golang/go#37977

Change-Id: I125c7900e8ee7975f179ea68333ea347b9bfa9e8
GitHub-Last-Rev: 69b71b7853dedc1dc42e96059aa693a4b8652062
GitHub-Pull-Request: golang/tools#217
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224591
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-24 16:11:17 +00:00
Muir Manders
ef1313dc6d internal/lsp/source: prefer unexported and non-func candidates
A common annoying mis-completion is as follows:

    type foo struct {
      field int
    }

    func (f foo) Field() int { return f.field }

    func (f foo) logic() {
      if f.f<>
    }

Now at <> we prefer "field" over "Field()". Similarly:

    type foo struct {
    }

    func (f foo) DoSomething() { }

    func (f foo) doSomething() { }

    func (f foo) logic() {
      f.d<>
    }

Now at <> we prefer "doSomething()" over "DoSomething()". All else
being equally, you normally want private objects over public objects
when the private objects are available.

The same logic is applied to deep completions so we prefer "c.foo.bar"
over "c.Foo().bar".

Change-Id: Ic91cba7721ddb1f2a30338037693ddcce8c621f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223877
Run-TryBot: Muir Manders <muir@mnd.rs>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-23 21:07:25 +00:00
Rebecca Stambler
8849913b69 internal/lsp: be more careful about showing workspace misconfig message
We can re-enable this when we have a version of Go that includes the fix
for golang/go#37971. Then we can continue playing whack-a-mole with go
list corner cases :)

Fixes golang/go#37958

Change-Id: I2417731bf5c01fbde867fef2ef03b5025ae779c7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224538
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-23 19:22:00 +00:00
Rebecca Stambler
18ea2c8f73 internal/lsp: fix nil pointer in renaming to "error"
Fixes golang/go#37963

Change-Id: I0a46cbcbd250729761b9a8323b942202bb1dbd75
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224477
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-23 16:43:54 +00:00
Ian Cottrell
8dcfad9e01 internal/telemetry: switch metrics to use the event system
Change-Id: If036530ffe47e7df925bcf6592f664d6020a3d65
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223997
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-23 14:44:30 +00:00
Ian Cottrell
b378960d5b internal/telemetry: replace event.TagList with event.TagSet
This allows us to hide the implementation details of how tags are stored on a
context from the normal interface, to allow us to explore more efficient
mechanisms.
The current storage is not intended as the most efficient choice, this cl is
about isolating the API so we can experiment with benchmarks in the future.

Change-Id: Ib101416bccd8ecdee269cee636b1564d51e1da8a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222854
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-23 14:43:48 +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
Ian Cottrell
540150da73 internal/telemetry: add type safe tag keys
This changes the way keys work, there is still a single internal key
implementation for performance reasons, but the public interface is a set of key
implementations that have type safe Of and Get methods.
This also hides the implemenation of Tag so that we can modify the storage form
and find a more efficient storage if needed.

Change-Id: I6a39cc75c2824c6a92e52d59f16e82e876f16e9c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223137
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-18 13:29:43 +00:00
Ian Cottrell
d7fc2cf50e internal/telemetry: delete the event.TagOf method
It encourages poor performing log lines, and also reduces the readability of
those lines.
Also delete the Key.With method which was unused, and should never be used
instead of the event.Label function anyway.

Change-Id: I9b55102864ee49a7d03e60af022a2002170c0fb1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222851
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-18 13:23:15 +00:00
Ian Cottrell
04208b9e8a internal/lsp: move the telemetry package
Move the lsp specific telemetry package that just declares the labels under the
debug package and call it tag, to make all the usages much more readable.

Change-Id: Ic89b3408dd3b8b3d914cc69d81f41b8919aaf424
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222850
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-18 13:22:49 +00:00
Ian Cottrell
cb106d260e internal/telemetry: allow ProcessEvent to modify the event
This allows early exporters to adjust the event for later ones.
This is used to lookup key values from the context if needed.
Also add a Query type event which is intended to perform all event
modifications but nothing else, and is used to lookup values from
the context. This cleans up a weirdness where the current lookup
presumes there will be an exporter with a matching mechanism.

Change-Id: I835d1e0b2511553c30f94b7becfe7b7b5462c111
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223657
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-03-18 13:22:01 +00:00
Ian Cottrell
9fceb114c3 internal/lsp: move the operation key to the telemetry package
Change-Id: If064d9bb396169fe78214b07f72a0536082bf374
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223748
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-18 13:08:08 +00:00
Muir Manders
11a475a590 internal/lsp/source: fix literal completions in variadic args
We now properly offer literal completions when completing the variadic
parameter. For example:

    func foo(...[]int) {}
    foo(<>) // now offers "[]int{}"

Updates golang/go#37656.

Change-Id: I91c47d455ae3f8051078c82a308f2b5ad4b3d4cd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222199
Run-TryBot: Muir Manders <muir@mnd.rs>
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2020-03-18 05:47:22 +00:00
Muir Manders
613a0345a2 internal/lsp/source: optimize enumeration of a type's fields
When searching for deep completions, we can end up enumerating struct
types' fields a lot. Optimize fieldSelections to reduce work:

- Wait until we see an embedded field before we create the "seen"
  map.
- Use a callback style to iterate over the struct's fields rather than
  returning a slice of fields.
- Change "seen" checking strategy back to track struct types rather
  than each individual field.

Struct with 5 non-embedded fields:

name       old time/op    new time/op    delta
Fields-16     293ns ± 1%      20ns ± 2%   -93.13%  (p=0.008 n=5+5)

name       old alloc/op   new alloc/op   delta
Fields-16      120B ± 0%        0B       -100.00%  (p=0.008 n=5+5)

name       old allocs/op  new allocs/op  delta
Fields-16      4.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)

Same struct but add an embedded struct with 2 fields:

name       old time/op    new time/op    delta
Fields-16     389ns ± 1%     142ns ± 1%  -63.53%  (p=0.008 n=5+5)

name       old alloc/op   new alloc/op   delta
Fields-16      120B ± 0%      144B ± 0%  +20.00%  (p=0.008 n=5+5)

name       old allocs/op  new allocs/op  delta
Fields-16      4.00 ± 0%      2.00 ± 0%  -50.00%  (p=0.008 n=5+5)

I think the alloc/op went up because the "seen" map is no longer
allocated on the stack. There is more room for more optimization, but
it's probably not worth making things more complicated.

Change-Id: I6f9f2124334a8594ef9d6f9b5ac4b3a8aead5f49
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223419
Run-TryBot: Muir Manders <muir@mnd.rs>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-18 05:47:12 +00:00
Marwan Sulaiman
cf1dd6fc34 x/tools/gopls: 'go generate' should use $/progress if available
This commit will make the 'go generate' CodeLens command check the client
capabilities to use $/progress to report the progress of the command or otherwise
it will fallback to showing the message box already in place. The $/progress will
give you a play by play update while the message box shows only the beginning and
the end. The gopls logs will have all the details in either case.

Note that the $/progress is an LSP 3.15+ feature and not yet supported in all clients.

Updates golang/go#37680

Change-Id: I5ba37448be8e388f728394795e1bb5f1d50cc30d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223739
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-03-17 19:18:43 +00:00
Rohan Challa
d05f4d6edb internal/lsp: fix breadcrumbs when inside of a method
This change fixes breadcrumbs when the cursor is inside of a method by making the method a top level symbol and removing it from the struct's hierarchy.

Fixes golang/go#36949

Change-Id: I8da5f453a5c78ade1e7688fc4eeebf79ce96f1e1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221819
Run-TryBot: Rohan Challa <rohan@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-17 19:04:34 +00:00
pjw
827390e901 internal/lsp: fix code.ts to generate progress and *TextEdit
This CL gets code.ts to generate code for $/progress and
window/workDoneProgres/create messages. $/progress uses a
ProgressParams type which contains one of three new data types,
WorkDoneProgressBegin, WorkDonProgressEnd, WorkDoneProgressReport.

In addition, a *TextEdit is now generated for CompletionItem.TextEdit.

The substantive differences in code.ts are around line 451 and line
682. Everything else is whitespace caused by vscode formatting typescript
differently on different OSes.

Change-Id: Ide441e6e0029cbc8401d6476f6a939216cc89634
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223743
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-17 18:47:13 +00:00
Marwan Sulaiman
63da46f303 x/tools/gopls: run go generate through CodeLens
This change adds support for recognizing a //go:generate directive
and offering a CodeLens that will then send a "generate" command to
the server to run "go generate" or "go generate ./...". Because
"go generate" can only be executed per package, there is no need to show
the CodeLens on top of every //go:generate comment. Therefore, only the
top directive will be considered.

The stdout/stderr of the go generate command will be piped to the logger
while stderr will also be sent to the editor as a window/showMessage

The user will only know when the process starts and when it ends so that they wouldn't
get bogged with a large number of message windows popping up. However, they can
check the logs for all the details.

If a user wants to cancel the "go generate" command, they will be able
to do so with a "Cancel" ActionItem that the server will offer to the client

Fixes golang/go#37680

Change-Id: I89a9617521eab20859cb2215db133f34fda856c7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222247
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-17 04:34:34 +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
aca
df010c5017 internal/lsp/cache: fix typo
Change-Id: Ida5ed631652d9d4e35018300ab098ebb24b75856
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223498
Reviewed-by: Toshihiro Shiino <shiino.toshihiro@gmail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-03-16 18:21:19 +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
c1c69b635f internal/lsp: clean up on Shutdown even if not initialized
Previously it was an error to call shutdown while the server was not yet
initialized. This can result in session leak for very short-lived
sessions.

Instead, allow shutdown to proceed and simply log the error. On the
other hand, for consistency make it an error to call initialized without
first calling initialize.

Updates golang/go#34111

Change-Id: I0330d81323ddda6beec0f6ed9eb065f8b717dea0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222671
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-12 19:43:25 +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
Muir Manders
11d5b4c81c internal/lsp/source: offer loop keyword completions in range stmt
Be sure to offer "continue" and "break" keyword completions in
RangeStmt in addition to ForStmt.

Fixes golang/go#34009.

Change-Id: I01ea0c3d8d110e322cb6582fda32aeb060116bb1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223120
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-12 04:57:24 +00:00
Ian Cottrell
eff45d17df internal/telemetry: convert key from string to struct
This makes keys a pointer, which reduces the allocations during logging, and has
a significant improvement in memory and cpu cost when there is no exporter.
Packing a string into an interface requires a 16 byte allocation, packing a pointer
does not.

name                old time/op    new time/op    delta
/LogNoExporter-8      4.39µs ± 2%    3.83µs ± 2%  -12.74%  (p=0.000 n=18+20)
/Log-8                23.5µs ± 2%    22.6µs ± 1%   -4.20%  (p=0.000 n=19+18)

name                old alloc/op   new alloc/op   delta
/LogNoExporter-8      1.70kB ± 0%    1.38kB ± 0%  -18.78%  (p=0.000 n=20+20)
/Log-8                4.91kB ± 0%    4.91kB ± 0%     ~     (p=1.000 n=20+20)

name                old allocs/op  new allocs/op  delta
/LogNoExporter-8        83.0 ± 0%      63.0 ± 0%  -24.10%  (p=0.000 n=20+20)
/Log-8                   163 ± 0%       163 ± 0%     ~     (all equal)

Change-Id: Iec127f1bff8d5c8f4bd0a6d9f6d8fc4b8bc740b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222599
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-12 04:17:52 +00:00
Ian Cottrell
206ec5b82a internal/lsp: migrate telemetry to using the event package
Change-Id: Idc662385ed08bd62593ccd1d54afd3fa8c1a7d29
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222558
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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2020-03-12 03:59:16 +00:00
Ian Cottrell
d780ff7bdd internal/telemetry: unify the event handling to an event package
This is now the only package that is exposed to normal use, and should
be the only thing to appear in libraries.

Change-Id: I90ee47c6519f30db16ff5d5d2910be86e91e5df2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222557
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-12 03:58:56 +00:00
Muir Manders
3dc7fec788 internal/lsp/cache: remove parseGo semaphore
The original intention was to limit the number of open file handles,
but the parseLimit semaphore was limiting parser.ParseFile calls that
don't access files, so there was no benefit. The file limiting is
already handled generically by another semaphore in the lsp FileSystem
abstraction.

Change-Id: Idc7f2507af5287e983a7edf3e38a848d26770bbe
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223119
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-12 03:18:52 +00:00
Daisuke Suzuki
0d653b92c5 internal/lsp/tests: fix WorkspaceSymbols tests
The tests will not run because there is no workspacesymbol marker.
Therefore, restore testdata used in WorkspaceSymbols tests, and
initialize data so that the tests run even if the target of the marker
is 0.

Change-Id: I051b842183b7e23bb746cc282fc3921a90ca8df1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221617
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-11 18:46:36 +00:00
Muir Manders
43e3193a9b internal/lsp/source: suppress keyword completions in "case" statement
Now we no longer offer keyword completions inside "case" statements:

    select {
    case fo<>: // don't offer "for"
    }

Updates golang/go#34009.

Change-Id: I908eda32af01fd1912fb587ce59efef1798b6741
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220580
Run-TryBot: Muir Manders <muir@mnd.rs>
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2020-03-11 03:54:31 +00:00
Muir Manders
7bb885034f internal/lsp/source: fix completion in empty switch statements
Now we properly offer "case" and "default" keyword completion in cases
like:

    switch {
      <>
    }

First I had to add an AST fix for empty switch statements to move the
closing brace down. For example, say the user is completing:

    switch {
    ca<>
    }

This gets parsed as:

    switch {
    }

Even if we manually recover the "ca" token, "<>" is not positioned
inside the switch statement anymore, so we don't know to offer "case"
and "default" candidates. To work around this, we move the closing
brace down one line yielding:

    switch {

    }

Second I had to add logic to manually extract the completion prefix
inside empty switch statements, and finally some logic to offer (only)
"case" and "default" candidates in empty switch statements.

Updates golang/go#34009.

Change-Id: I624f17da1c5e73faf91fe5f69e872d86f1cf5482
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220579
Run-TryBot: Muir Manders <muir@mnd.rs>
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2020-03-11 03:54:16 +00:00
Muir Manders
0983143fce internal/lsp/source: avoid type checking in AllImportsFixes
Change AllImportsFixes to get the ParseGoHandle directly rather than
using getParsedFile. The latter also type checks the containing
package, which is slow in general and can be really slow in certain
circumstances. This should speed up the organizeImports code action.

Change-Id: Ic505873db41d5d76c398cee42f0323e390d9e034
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222780
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-10 23:10:53 +00:00
Peter Weinbergr
3e041465cc internal/lsp: change the type of CompletionItem.TextEdit back
The recent LPS protocol change made the definition of textEdit into
a union type, so the generated code made TextEdit an interface{},
which broke govim. This CL reverts it to a *TextEdit. The code
generator will be fixed in another CL.

We can revisit this when  gopls wants to start using the new
InsertReplaceEdit type.

Change-Id: I4d7a14b3746b747f34b0907f72ecbc3593706a05
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222765
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-10 21:12:04 +00:00
Rebecca Stambler
b84001dd64 internal/lsp: suggest filing an issue if a warning is incorrect
It seems that people are running into this warning for reasons other
than ad-hoc packages. Suggest filing an issue, since it may be that they
are opening the wrong directory or something.

Change-Id: I88036d2db9477bbea5099910f4cd8e5ba55e0624
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222597
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-10 21:11:10 +00:00
Muir Manders
138c814f66 internal/lsp/source: offer completion "if err != nil { return err }"
Now we offer an error-check-and-return completion candidate when
appropriate:

    func myFunc() (int, error) {
      f, err := os.Open("foo")
      <>
    }

offers the candidate:

    if err != nil {
      return 0, <err>
    }

where <> denotes a placeholder so you can easily alter "err".

The completion will only be offered when:
1. The position is in a function that returns an error as final result
   value, and
2. The statement preceding position is an assignment whose final LHS
   value is an error.

The completion will contain zero values for the non-error return values
as necessary.

Using the above example, the completion will be offered after the user
has typed:

    i
    if
    if err

Basically the candidate will be offered after every keystroke as the
user types "if err".

I call this new type of completion a statement completion - perfect
for when you want to make a statement!

Change-Id: I0a330e1c1fa81a2757d3afc84c24e853f46f26b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221613
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-10 21:06:53 +00:00
Peter Weinberger
20ab64c0d9 internal/lsp: bring generated protocol code up to date; stop corrupting logs
1. logging at debug/rpc.go:105 was corrupting logs.
2. DocumentSymbol (a Server method) now returns []interface{}.
3. The latest version of the LSP changed CompletionItem.TextEdit to
possibly be of the new type InsertReplaceEdit, so the generated Go
code now has TextEdit an interface{} rather than a *TextEdit. This
required a change to tests/util.go.
4. The latest version also introduced several other new types,
and new members in some structs.

Tests pass and the I've use the new gopls a little.

Change-Id: Ic44d46f0c923882c9076c2754c1c85e09fbcaa2e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222668
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-03-09 20:21:50 +00:00
Muir Manders
92d517f97b internal/lsp/source: suppress completions in ellipsis
Editors typically trigger completion automatically after ".". This
pops up annoying, useless completions after "..." variadic param, such
as "foo(bar...<>)". We now suppress completions in or directly after
the ellipsis.

Fixes golang/go#37358.

Change-Id: I9fc94fbdf69429bd787bcb2c643f4f730e24154d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222200
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-09 18:42:16 +00:00
Rob Findley
aa4048aca1 internal/lsp/lsprpc: don't connect to sockets owned by different users
When running gopls as a forwarder it attempts to forward the LSP to a
remote daemon. On posix systems, by default this uses a unix domain
socket at a predictable filesystem location.

As an extra precaution, attempt to verify that the remote socket is in
fact owned by the current user.

Also, change the default TCP listen address used on windows to bind to
localhost.

Updates golang/go#34111

Change-Id: Ib24886d290089a773851c5439586c3ddc9eb797d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222246
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-09 18:08:59 +00:00
Danish Prakash
c94e1fe145 internal/lsp/source: return location(s) for imported packages
Fixes golang/go#32993

Change-Id: Iff2f7ab8e34eea1ce7c1ab99fb2e51589dce95c4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210321
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-09 16:25:02 +00:00
Muir Manders
11ec41452d internal/lsp/source: support completing "range" keyword
We now offer "range" keyword in the for loop init statement:

for i := r<> // offer "range" completion candidate

Updates golang/go#34009.

Change-Id: I2e4c1db11c37127406c78191681c39b9dd3439f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220504
Run-TryBot: Muir Manders <muir@mnd.rs>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-08 01:35:34 +00:00
Muir Manders
2047c2d578 internal/lsp/source: complete keywords as types
Offer "struct", "interface", "map", "chan", and "func" keywords when
we expect a type. For example "var foo i<>" will offer "interface".

Because "struct" and "interface" are more often used when declaring
named types, they get a higher score in type declarations. Otherwise,
"map", "chan" and "func" get a higher score.

I also got rid of the special keyword scoring. Now keywords just use
stdScore and highScore. This makes the interplay with other types of
candidates more predictable. Keywords are offered in pretty limited
contexts, so I don't think they will be annoying.

Finally, keyword candidate score is now to be scaled properly based on
how well they match the prefix. Previously they weren't penalized for
not matching well, so there were probably some situations where
keywords were ranked too high.

Updates golang/go#34009.

Change-Id: I0b659c00a8503cd72da28853dfe54fcb67f734ae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220503
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-08 01:33:38 +00:00
Rohan Challa
51e69f7192 internal/lsp/cache/mod: return errors only within ModHandle and ModTidyHandle
This change makes ModHandle and ModTidyHandle return a ModData structure that only contains an error if something goes wrong when parsing the .mod files.

Change-Id: I89661cfefeff666bdf13cf99f4c56137e120de82
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222242
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-06 19:16:17 +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
Rob Findley
8287d625a0 internal/lsp/debug: guard rpc stats with a Mutex
This type was previously guarded implicitly by the global exporter
mutex. With that gone, we've started seeing panics due to races in
(*rpcs).Metric.

Guard it with a mutex.

Change-Id: I2a8c670ecfbaee9422e1f1d282b1fedb86b6a5e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222300
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-03-06 16:15:13 +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
Rohan Challa
136c3617b6 internal/lsp: support textDocument/formatting for .mod extension
This change implements support for textDocument/formatting when it comes to go.mod files. It also adds formatting on save ability.

To enable formatting on save for go.mod files, you need to include the following settings inside of your VSCode settings.json:

...
"[go.mod]": {
	"editor.codeActionsOnSave": {
		"source.organizeImports": true,
	},
	"editor.formatOnSave": true,
},
...

Updates golang/go#36501

Change-Id: I60ac14d0e99b2b086fe9a8581770771aafc2173c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221223
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-06 13:51:27 +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
Rob Findley
d1d1f200c6 internal/lsp/lsprpc: use Setsid on POSIX GOOSes, to avoid SIGTERMs
When the gopls daemon is automatically managed (-remote=auto), it will
be started by one of the forwarder gopls processes that was in turn
started by the editor. By default, this puts it in the same process
group as the forwarder gopls.

Some editors (at least Vim) send SIGTERM to the process groups of
sidecar processes when exiting. This can cause the gopls daemon to
terminate, thereby losing state.

Rather than ignore SIGTERM (which is bound to be editor dependent
anyway), let's just put the gopls daemon in a separate session.

Updates golang/go#34111

Change-Id: I71386fb54b8c2efe1c565f59763f46693a7d48b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221220
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-03-05 21:44:44 +00:00
Rob Findley
bc073721ad internal/lsp/cache: include session IDs in some cache keys
When caching file data specific to a session (anything with a Version or
tied to a view), we now need to be more careful about the existence of
multiple sessions.

This change fixes a few places where we appear to cache session data
without explicitly referring to the session. In principal this could
cause data corruption in multi-session gopls instances, but I have not
been able to force this to occur in either manual or automated testing.

Also fix a data race to the unsaved overlays:
https://storage.googleapis.com/go-build-log/588ee798/linux-amd64-race_d0762522.log

Updates golang/go#34111

Change-Id: I47117da1aba1afc2e211785544ad3f8b3416d15d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222059
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-05 20:50:14 +00:00
Rob Findley
6a641547f5 internal/lsp/cache: fix NPE in fileWasSaved
Reading the docstring, it looks like the sense of the type assertion was
accidentally inverted in this function. Fix it to what I believe was
intended.

Fixes golang/go#37687

Change-Id: Ief44a996f1a262527c2916d6b78b81dd35b2cf9e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222217
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-03-05 18:53:22 +00:00
Ian Cottrell
32f14692fc internal/lsp: use standardised events for tagging
This means that tags also become cheap if there is no exporter and cleans up the
mess with how spans, tags and logs were related.
Also fixes the currently broken metrics that relied on the span tags.

Change-Id: I8e56b6218a60fd31a1f6c8d329dbb2cab1b9254d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222065
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-03-05 14:00:10 +00:00