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Commit Graph

1367 Commits

Author SHA1 Message Date
Rebecca Stambler
67a4523381 internal/lsp: determine parse mode based on workspace packages
Our current invariant is that all workspace packages are parsed in full
mode, and all dependencies are parsed in exported mode. We can rely on
this, as well as the fact that workspace packages are set during
metadata loads, to reduce the amount of plumbing the mode requires.W

Change-Id: Ib9406ca3c0dc2c81c7ee3158407f28022924d4d0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217139
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-04 23:03:16 +00:00
Rohan Challa
7124308813 internal/lsp/tests: add severity parameter to @diag markers
This change will add another parameter to the diagnostic markers (@diag).

Change-Id: I69f4672e7d5417099c11d1a46d9bc45a4d1e5ecc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217719
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-04 19:24:00 +00:00
Rohan Verma
1cc6d1ef6c tools/gopls: add cmd support for prepare_rename
This change adds command line support for prepare_rename.

Updates golang/go#32875

Change-Id: I7f155b9c8329c0faa26a320abab162730a7916ad
GitHub-Last-Rev: 118e846420d7c56fbf0e4f416c8fd6a52e9638a8
GitHub-Pull-Request: golang/tools#188
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207579
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-04 07:42:04 +00:00
Rebecca Stambler
59e246924e internal/lsp/cache: use snapshot ID and view folder in ModTidyHandle key
Just to be safe, the snapshot ID and view's folder should be enough to
uniquely identify the ModTidyHandle.

Change-Id: Ie3a0dc64bf16bcc8e4eb75af107481c07de81967
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217657
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-04 06:02:07 +00:00
Heschi Kreinick
cf5ba95194 internal/imports: stop leaking listeners
(*dirInfoCache).ScanAndListen saves a listener when it's called. That
listener is a chain of callbacks that leads all the way back up to the
original caller, i.e. the gopls completion code. It needs to unregister
that listener, but in cases where the context was cancelled before it
finished its initial walk of the cache, it failed to. In gopls' case,
that means retaining the entire state of the workspace as of completion
triggering.

Return a real stop function on all paths.

Change-Id: Iff3046e627b1fa89f576371c4742fee6fdca7589
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217677
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-04 05:47:48 +00:00
Rebecca Stambler
35ac94b00d internal/span, internal/lsp: fix URI escaping
We had previously worked around a VS Code URI bug by unescaping URIs.
This is incorrect, so stop doing it and then add a specific workaround
just for that one bug.

Fixes golang/go#36999

Change-Id: I92f1a5f71749af7a6b1020eee1272586515f7084
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217599
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-04 00:54:49 +00:00
Heschi Kreinick
49e540660c internal/lsp/debug: serve cache entry counts
We seem to be leaking cache entries. A simple status page will help us
confirm that.

Change-Id: I485bfff6ebfb5d30655554487583e15a3f49f9a4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217597
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-03 22:21:18 +00:00
Rebecca Stambler
ab391d50b5 internal/lsp: don't show links in hover for test functions
source.Identifier previously was used for references and rename, so it
needed to take a package policy. Now, it's only used for definition and
hover, so it should always be the narrowest package handle. We can use
this fact to determine if the identifier is located in its declaring
package, and if that package is a test variant, we don't link to the
documentation on pkg.go.dev, since it doesn't exist.

Change-Id: I5686828858a3feafb8ff2e4c5964b562f66db9fa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217137
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-03 21:56:10 +00:00
Rohan Challa
33212cd6a0 internal/lsp: aggregate diagnostics before publishing them
This change aggregates all the diagnostics before publishing them to the client. This also updates the lsp_test to use lsp.Diagnose vs source.FileDiagnostics, unless lsp.Diagnose doesn't return any results.

Change-Id: I39959b50af3f65fce5d8e15fb138ccc019ce8073
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217338
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-03 19:35:11 +00:00
Rohan Challa
a014e0aa6a internal/lsp: skip packages load for auxilary go.mod changes
This change will skip packages.load calls when a go.mod file changes if that go.mod file is not the go.mod file associated with the view.

Change-Id: I23a214a89203dd58417f3e2f69725ce3b669a5ca
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217238
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-03 17:58:37 +00:00
Rohan Challa
c4cbd3b08f internal/lsp: add diagnostics in .go files for missing deps in go.mod
This change adds diagnostics to imports in .go files that are missing the dependency in the go.mod file. The quick fix that adds the appropriate require statement is coming in a follow up CL.

Updates golang/go#31999

Change-Id: I314cdbe8e3dd27da744ca0391e7a6e5dc1ebaa77
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216277
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-03 17:57:15 +00:00
Rebecca Stambler
2de6fe5e3e internal/lsp: return error if there is no builtin package
When we stopped returning an error from awaitInitialized, we didn't
handle this case in LookupBuiltin.

Fixes golang/go#36975.

Change-Id: I9668a7148f60ca1f9cad953d46caf6ec5500541e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217399
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-02-03 17:52:18 +00:00
Peter Weinberger
6682176fbb internal/lsp: remove useless check
err must be nil, as the code checks in line 117.

Change-Id: I23d87bdc9489c9ed249bfa1ac61b1ed722121c6a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217402
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-03 17:13:28 +00:00
Muir Manders
6f24f261da internal/lsp/cache: refactor a few small things
In preparation for some meaningful changes, rework a few things:

- rename "fix" to "fixAST"
- separate "parseExpr" into "parseStmt" and "parseExpr"
- pull out "walkASTWithParent" function

Change-Id: If6c8a249441feda95704f37bc9bde3ef2b64cbd2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216481
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-03 02:30:11 +00:00
Muir Manders
bc0b458b10 internal/lsp/source: improve completion for "make()" args
Fix type inference to expect a type name for the first "make()"
parameter and an integer for later parameters. For example:

   // Previously we expected "[]int{}", now we expect "[]int".
   var _ []int = make(<>)

Note that we don't currently support actually completing to unnamed
type names like "[]int", but this improvement at least eliminates
nonsensical completion suggestions.

   // Previously we had no expectation, now we expect an int.
   var _ []int = make([]int, <>)

Change-Id: Ifd349767662ab6902d3a3ea9e52de7df70cb37c7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217310
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ingo Oeser <nightlyone@googlemail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-02 23:20:50 +00:00
Rob Findley
ecb101ed65 internal/lsp/debug: support dropping sessions and views
These functions were unimplemented.

Change-Id: Ie95ee4e99511e1e00689eefe6d97df0780b72d2f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217090
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-31 21:12:09 +00:00
Rob Findley
1baf5b43f6 internal/lsp/cache: add Env to debugView
Env is used in the debug template, but not available.

Change-Id: I8e270464aecd927bc553bfbf9e7c85a477833890
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217085
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-31 20:48:24 +00:00
Daisuke Suzuki
5dffee2a89 internal/lsp: change to helper.go to output a formatted file
Use format.Source before output.

Change-Id: I8504fc80defa77aeaab748b9dc65d6382da500a3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217177
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-31 20:35:38 +00:00
Rohan Challa
d6d1b0d853 internal/lsp/cache: add context cancellation check inside importerFunc
This change adds a check inside of the types.ImporterFunc to see if the context has been cancelled.

Updates golang/go#34683

Change-Id: I0f12da0f8158ecda0eec00150ed6ff772c2f89c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217257
Run-TryBot: Rohan Challa <rohan@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-31 18:31:50 +00:00
Rob Findley
b4fe758a9b internal/lsp/source: don't allow mutating DefaultOptions
DefaultOptions was a value type, but held map values. This CL changes it
to a function that returns an Options value that has new instances of
all reference types. It would be better if this function returned a
pointer, but that change ended up being too large. I will need to
refactor handling of options later anyway, in order to support sessions
with differing options for golang.org/issues/34111.

This fixes a race in internal/lsp/tests: internal/hooks/analysis.go
mutates the Analyzers map.

See for example the trybots result at:
https://storage.googleapis.com/go-build-log/0d34f5f0/linux-amd64-race_4ecdf9c8.log

Change-Id: I41be450b590a3f3104ac9a1cb9cb312ea3ff7ff4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217077
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-31 15:48:08 +00:00
Daisuke Suzuki
097c1f2eed internal/lsp: fix typo
Change-Id: I2480725dc20f67bb0427c71dab83a0cbe72832a1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217178
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
2020-01-31 14:37:46 +00:00
Heschi Kreinick
b4207ef493 internal/lsp: use span.URI constructor everywhere
We should never be converting to a URI directly, in case it's encoded or
needs Windows-specific fixes.

Change-Id: I8af272f878e2e4faf428bd7b74b7cba4f65093a3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217086
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-31 00:08:51 +00:00
Rebecca Stambler
0725381040 internal/span: always uppercase the drive letter for Windows
Drive letters are always case-insensitive, so we should standardize them
by always keeping them uppercase.

Updates golang/go#36904

Change-Id: I8de25b175790b01627f947600c1511edf38c316c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217080
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-30 22:30:17 +00:00
Rebecca Stambler
4e65565728 internal/lsp: set workspace packages during (*snapshot).load
We can assume that any package we load directly will be a package in the
workspace, so it's reasonable to set workspace packages at that point.
We're guaranteed not to directly load dependencies, or we may end up
with indirect dependencies in the go.mod file.

Change-Id: I5d406e54da2bc3278b139c75b436d111b5564418
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216726
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-30 00:17:45 +00:00
Rohan Challa
c8253cffe2 internal/lsp/mod: fix test that checks for unchanged go.mod
The test that checks to make sure a user's go.mod file does not change if tempModfile=true is not doing anything. At some point, the go.mod file to test added a go directive. This change removes the go directive from the go.mod file.

Change-Id: I1c4b6b326e99d8fec5c21ac779dcdcd73610f48c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216840
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-29 23:28:05 +00:00
Rebecca Stambler
8a05c59e79 internal/lsp/cache: move shouldLoad function to snapshot.go
Some housekeeping. The shouldLoad function doesn't actually make sense
in load.go.

Change-Id: Idcfade57ab853cdae809c688fa21026a0a432c60
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216727
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-29 22:51:48 +00:00
Heschi Kreinick
716555639d internal/lsp/cache: use telemetry logging for imports refresh
Any context that came in through the lsp protocol package will work, live or dead.

Change-Id: I7566ec07b09e1c8e54a5255ebda8553843cfe974
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216846
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-29 22:22:23 +00:00
Heschi Kreinick
ec2e11d257 internal/lsp/source: check cancellation before analysis
We check cancellation pretty early on in analysis, but not before we
read Options. Checking earlier avoids a race in the command tests.

Fixes golang/go#36699.

Change-Id: I557c0441d70c80e122655be00a03b47080ddb7f6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216844
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-29 21:19:39 +00:00
Rebecca Stambler
11f6c2ac6d internal/lsp/cache: delete a few unused functions
Change-Id: I723ae6d2676bdbb4cfc0fec339e87604a032e807
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216725
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-29 21:03:00 +00:00
Rebecca Stambler
207d3de1fa all: fix some staticcheck errors
Updates golang/go#35718

Change-Id: I10bfd5421cd44bb58b8bcaa6e9205040c25f51be
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208257
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-29 04:53:41 +00:00
Heschi Kreinick
e1fd5825ff internal/lsp/cache: handle invalid analysis Pos
The nilness analysis gives us diagnostics with invalid start Pos. We can
just ignore those and log them.

Add a missing error check while I'm in here.

Change-Id: I4a205f253a9e47ec1513ff6299479f52e414a48c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216724
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-29 01:28:57 +00:00
Rebecca Stambler
ae42f3cd5c internal/lsp: recover from a view initialization failure
If an orphaned file is used to recover a workspace package, we should
remove the initialization error and treat the view as correctly
initialized.

Also, stop caching metadata for packages with no files. We have no way
to invalidate it, and it's useless, so just re-load those files as
needed.

Fixes golang/go#36795.
Fixes golang/go#36671.
Fixes golang/go#36772.

Change-Id: I0aee5a43401517b6073d27136cca533160effef2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216637
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-28 22:02:46 +00:00
Rebecca Stambler
345141a368 internal/lsp: provide arguments deterministically to packages.Load
This is just to ensure that arguments are always ordered when passed to
packages.Load.

Change-Id: I2c74673eff31efc31854dc0d306809890f633789
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216600
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-28 00:22:43 +00:00
Heschi Kreinick
9ab2d800b2 internal/lsp/cache: handle go.mod conflicts in go list
The go command gets mad if go.mod has changed since it started, e.g.
because a new dependency was added by a concurrent go list call. Retry
loads if they hit a concurrency problem. See the comment for more
details.

Testing this is awkward. I ran a background script that constantly
modified the go.mod file and observed that gopls waited until it was
killed and then recovered.

Updates golang/go#36772.

Change-Id: I5636c99a5a94b415c4a6fbb71869b07e31d3fed0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216543
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-27 22:30:56 +00:00
Rohan Challa
dd312ab63b internal/lsp: surface missing dependencies for imports not in go.mod
This change sets up the infrastructure to surface the dependencies that are missing in a go.mod file. In a follow up CL, we will use these to add diagnostics to the imports of .go files telling the user to add the dependency to their go.mod file.

Updates golang/go#31999

Change-Id: I697df0d7c6eabfdc2f0c75cb36aa35794647fd13
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214700
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-27 22:30:17 +00:00
Rebecca Stambler
0ac6790fc6 internal/lsp: only reload orphaned files that belong to the workspace
We were reloading all known files, which resulted in modifications to
user's go.mod files.

Change-Id: I14e86af896d1e75f3fdaaa00b9af8d7fb1d1e9e5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216542
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-27 21:51:55 +00:00
Rebecca Stambler
7736277c76 internal/lsp: remove shadow analysis from default suite
Mostly because I find it very annoying.
But I imagine lots of people shadow variables intentionally, and it's
very noisy.

Also, fix an error caught by the nilness check while I'm thinkng about
analyses.

Change-Id: I1867c8613194028815666efd879899bb5065c9d7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216541
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-27 21:40:33 +00:00
Heschi Kreinick
2b5094fbea internal/lsp/cmd: fix gopls check
The command line tool doesn't go through JSON RPC, so it retains type
information that's stripped in the tests. Cut the parameters down to
basic types manually for now. But I don't know why the command line
tests send RPCs if the real thing doesn't.

Fixes golang/go#36769.

Change-Id: I428b40478557ca35a7dae8d02bbcd990411f714f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216539
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-27 20:51:20 +00:00
Rebecca Stambler
ed30b9180d internal/lsp: don't show list errors unless necessary
The go/packages workaround to hide errors for overlay packages doesn't
seem to work well. It's easier to just hide list errors in gopls
diagnostics unless the package genuinely failed to type-check. Check if
the package has missing dependencies as an approximation of if it is
well-typed.

This required some additional special casing for the import cycle error
detection, which now causes them to have duplicate diagnostics. It's a
rare enough case that this doesn't concern me, but we should clean this
up at some point.

Fixes golang/go#36754.

Change-Id: If12c92fb9a0e0b69b711ae9a509ecb1b2a32255c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216310
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-27 19:59:09 +00:00
Rebecca Stambler
a644f81d5e internal/lsp: handle metadata reloads for ad-hoc packages
Now that we are reloading metadata for workspace packages by package
path, ad-hoc packages get their metadata reloaded incorrectly. If an
ad-hoc package has no metadata, reload it by reloading the entire
directory.

Fixes golang/go#36753

Change-Id: Ie440f6f76a220009d487b7ceadcf40594643e969
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216307
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-27 19:36:31 +00:00
Rebecca Stambler
ab094738a9 internal/lsp: fix active parameter for incomplete parentheses
I had originally thought I might be able to use exprAtPos for this,
which is why I ended up eliminating that function when I saw it only had
one use.

One test also had to change in order to fit better with the spec.
Specifically: "If [the active parameter is] omitted or the value
lies outside the range of `signatures[activeSignature].parameters`
it defaults to 0 if the active signature has parameters."

Fixes golang/go#36766.

Change-Id: I400d5b2db2985bfaa5efbcd91225151ca8b5f46a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216309
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-27 19:24:44 +00:00
Rebecca Stambler
0576458154 internal/lsp: log snapshot IDs, don't log context cancellation
Updates golang/go#36772

Change-Id: Id6f1be9511f37865d5c6efcff10230e03724b27d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216497
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-27 19:20:44 +00:00
Michael Matloob
f3a16861ae internal/lsp/source: add more go/analysis/passes analyzers to LSP's suite
The LSP already supports a bunch of analyses we have less confidence in
than the vet suite so we should add these too.

Updates golang/go#36639

Change-Id: Ifc37d09e3acd73de021be7b45b3d80fe8c00e0d7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215677
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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2020-01-27 19:05:40 +00:00
Rebecca Stambler
4320446551 internal/lsp: permit renaming symbols declared in other packages
Also, add a test for it.

Fixes golang/go#36743

Change-Id: I750ea36189a4ec5c9dc8553e4739b0238c2b29c8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216306
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-27 18:56:10 +00:00
Rebecca Stambler
bcecb1fcc1 internal/lsp: return context cancellation from LookupBuiltin
Change-Id: If90d111fbe89d2be445b15ec3721d48280540de9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216305
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-27 18:55:29 +00:00
Peter Weinberger
91d59a9776 internal/lsp: upgrade to current version of LSP
There are a number of new RPCs, for CallHeirarchy, SemanticTokens, and
WorkDoneProgress. Some of the messages now have two slashes, like
'textDocument/semanticTokens/edits'. A few unused RegistrationOptions
are no longer present.

Only generated code has changed. There are no changes any other .go
code.

The typescript code needed a new heuristic for finding the RPCs

Change-Id: Ie6942abac3a0cd60e86afe3fdbc6f6b0e9b30cb0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216537
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-27 18:31:17 +00:00
Heschi Kreinick
8fe064f891 internal/lsp/protocol: actually handle cancellation delivery
CL 215738 didn't work because the canceller was embedded in the
serverHandler, which already had a Deliver method. Add it as an actual
handler instead.

Change-Id: I0c79f1bee67aa3b4da53d92547804de859f1938c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216303
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-24 22:04:29 +00:00
Rebecca Stambler
bdfa187a52 internal/lsp: remove the checkErrors command in internal/lsp/source
Now that the view can report its own validity, we no longer need to have
an extra function to handle that.

Change-Id: Icd22f9b08601bd0fe18be064c43d21be2d6782e7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216144
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 21:19:55 +00:00
Rebecca Stambler
e0332898b9 internal/lsp: push more build-specific logic into the view
The view should really be able to determine if it's valid, not the
source package. Expand moduleInformation to be buildInfo, and use it to
collect additional details.

Use this information to determine if we should load a view's
subdirectories as part of the initial workspace load. If a module is
initialized, we will recreate the view, so we should be fine. Not sure
what will happen if the directory is moved into GOPATH, but that should
be less of a concern (I think).

Fixes golang/go#35818.

Change-Id: Ic8ceedd37386b1653b8965c64d9ba8953778ab78
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216143
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 21:10:25 +00:00
Rebecca Stambler
e23f2f3ad7 internal/lsp: reload metadata for orphaned files
go/packages overlay handling only really works for contains queries
(file=), so our approach of reloading packages by package path (for
workspace packages) wasn't handling newly created packages that need to
be handled through overlays. Workaround this by reloading metadata for
individual files that are missing it by running extra contains queries
(only after the first metadata load for package paths). Be careful not
to reload the same file multiple times if the first load did not succeed.

Somewhat related, clear out `go list` errors in packages that go
through overlay handling, since they will often be rendered irrelevant.
I'm not sure if this is the right move, but if it's not, then we will
have to do extra work to disregard those errors in gopls.

Fixes golang/go#36661.
Fixes golang/go#36635.

Change-Id: Ib83cffcdf8a3e07da0f30e734d5e2c89691e1aba
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216141
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 20:59:04 +00:00
Rebecca Stambler
1b668f2091 internal/lsp: disable literal completion candidates for some clients
If a client doesn't support the snippet format in completion insert
text, they can't take full advantage of the literal completion
candidates. Disable it in those cases, and remove the setting in
internal/lsp/source/options.go.

Fixes golang/go#36655.

Change-Id: Ibc045a0f2945aab753b0187194a03d0c0398dba5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216299
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 20:07:20 +00:00
Peter Weinberger
3f4d10fc73 internal/lsp: small change to helper.go to use ast.IsExported
Use ast.IsExported instead of explicit code.

Change-Id: I1bfabb3c575debb699a51e38f502fcb99a081203
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216297
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-24 17:05:13 +00:00
Rebecca Stambler
e0a7ba33ca internal/lsp/cache: move mod-related functions and file
This is a pure move with no code changes.
Rename parse_mod.go to mod_tidy.go since it's changed a bit.
Move the modfile.go functions into view.go since (1) Heschi doesn't
like spreading methods into multiple files and (2) it only has 2
functions in it anyway.

Change-Id: If0d7e4b50ac22c57302d90d68c2181dbb3ca8b87
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216142
Reviewed-by: Rohan Challa <rohan@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-24 14:45:41 +00:00
Peter Weinberger
9778d966fa internal/lsp: generate boilerplate stubs for type Server
go generate server.go generates server_gen.go which contains 44 boilerplate
stubs implementing the LSP protocol. The Server methods are defined
in protocol/tsserver.go and implemented in the lsp package. server_gen.go
ties the two together.

The generator is in helper/helper.go, and described in helper/README.md.

Change-Id: I120bc658e55a91ec5b07c0c0cf8c188882f0be66
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215979
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-24 14:41:51 +00:00
Rebecca Stambler
5c352bb417 internal/lsp: stop returning errors when we can't find a snapshot
Change-Id: I319021a3339971809b6096b3271aa6b0d94ae336
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216139
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 02:10:10 +00:00
Rebecca Stambler
a4b4a6733a internal/lsp/cache: check go.mod even if tempModFile is false
Missed a pretty key case in CL 216138. Also, I accidentally made it pass
-modfile even when it's not supported.

Change-Id: Ia0d04be7e82b77e1ec3f57ee2fee04e8c14a7c90
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216140
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-24 01:37:08 +00:00
Heschi Kreinick
5ecc1643ff internal/lsp/cache: fix GOPATH vendoring
We treat package IDs and import paths as semi-interchangeable, which is
wrong when GOPATH vendoring is in use. The only place it hurts us is
during import resolution, which is fixed here. We should always have the
package loaded, so it's just a matter of finding it by searching each
possible vendor location.

Fixes golang/go#36155.

Change-Id: If789092d16fa3d3294b6d8a2bcb980264506c161
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215904
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-24 00:03:48 +00:00
Rebecca Stambler
24841a4f5f internal/lsp: eliminate redundant view.ModFile function
view.ModFiles used to not return the real mod file, even if one existed.
Now, we construct view.moduleInformation even if -modfile isn't
supported.

Change-Id: I03faf2ea521c2f404d4e1ba47f71ae48f3cb08d9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216138
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-01-23 22:07:07 +00:00
Rebecca Stambler
59ae353e8e internal/lsp: recreate the view when needed
If the initial workspace load fails (due to a lack of a go.mod file or
an invalid go.mod file), we should try to re-load as changes to the
go.mod come in. Rather than retrying within the view, we just drop the
view entirely and try to recreate it. This shouldn't lead to any
noticeable lag, as anything that has been cached can still be reused.

Fixes golang/go#36531

Change-Id: I6e157075e8b3665f0ceef35e051e56ac3c29f286
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216037
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-23 21:53:29 +00:00
Rebecca Stambler
e873952e15 internal/lsp: check that a file handle is unmodified before read
Address a lingering TODO. A FileHandle read should return errors if the
file has been modified on disk while in use.

Change-Id: I540de9bef575a9ca838f49500665a24b05b4f54c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215981
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-23 20:52:07 +00:00
Rebecca Stambler
219d3418f5 internal/lsp: batch file changes in didChangeWatchedFiles
Remove the special handling for go.mod file saves. This was only really
added to be extra careful, but our cancellation logic should cope with
this.

Fixes golang/go#31553

Change-Id: I0a69bcdeaf6369697e79aba4689a7b714484ccc2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215908
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2020-01-23 20:51:52 +00:00
Rebecca Stambler
e54d0edf47 internal/lsp: support batched on-disk changes in source.DidModifyFiles
We don't yet propagate these batched changes in text_synchronization.go,
but this is the next step in moving towards a batched approach.

Updates golang/go#31553

Change-Id: Id6496af9d5422cc50ccb995f81c71ec1886f965a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215907
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2020-01-23 20:28:28 +00:00
Rebecca Stambler
a356fb7f16 internal/lsp: support multiple URIs in (*view).invalidateContent
Caught a number of unused parameters along the way. Hopefully we can
eliminate the containsFileSave boolean soon, since it's a bit annoying
to have to send that through.

Updates golang/go#31553.

Change-Id: I94319d902d329c84cb1c0676322ac04541ad53a0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215906
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2020-01-23 20:19:14 +00:00
Rohan Challa
0043dadf92 internal/lsp: use x/mod to get edits for go.mod quick fixes
This change uses the wonderful functions from x/mod to get the proper edits for the quick fixes on a go.mod diagnostic. It also creates a goModData structure to hold the data thats gets passed into the various parse functions, this will help reduce the large function prototypes that can occur when we decompose the logic. It also refactors the Modfiles() function to return span.URIs vs FileHandles.

Change-Id: Ifa0896442650f2ddbd8fe98d8f231a9e94c3d042
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215097
Run-TryBot: Rohan Challa <rohan@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-23 20:18:34 +00:00
Rohan Challa
2b7b26d7b0 internal/imports: add buildflags to ProcessEnv
This change adds a buildflags variable to the ProcessEnv inside internal/imports. When you run go list with GO111MODULE=on to get information about the package you are in, it will add a go directive to your go.mod file if there is not one. With the tempModfile=on flag, there should be no changes to a user's go.mod file.

Updates golang/go#36247

Change-Id: I817e4c46b4f433d0665fcb7585fcdf4f87049a38
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215978
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-23 19:46:59 +00:00
Rebecca Stambler
593de60622 go/packages: handle an overlay edge case with test variants
As usual, in debugging the creation of a new file with gopls, I've
encountered a go/packages overlay bug. The issue is:

A file b/b.go with package name "b" exists on disk. A package
b/b_test.go with no content exists on disk. There is an overlay for
b/b_test.go that contains the package name "b". Running packages.Load
for file=b/b_test.go will result in a failure to load package b
[b.test]. This change adds this test to the go/packages tests.

This case is fixed by restricting the fallback logic in
runContainsQueries. We only attempt to construct an ad-hoc package if
the original package was returned with no GoFiles.

Also, a minor change to the gopls error parsing code that fixes a case
in which diagnostics were being sent without corresponding files.

Updates golang/go#36635.

Change-Id: I38680a2cc65ae9c3252294db6b942d031189faf5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215743
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Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-01-23 02:22:18 +00:00
Rebecca Stambler
ba161d9e22 internal/lsp: add tests for references includeDeclaration setting
Make sure to test both modes, as this is the second time we've
accidentally broken this.

Fixes golang/go#36598.

Change-Id: I3993af3d106b18c76c44ada558b2c6cd9cbfcf17
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215777
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TryBot-Result: Gobot Gobot <gobot@golang.org>
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2020-01-23 01:39:50 +00:00
Rebecca Stambler
18389cb1f4 internal/lsp: refactor (*snapshot).clone to handle multiple URIs
This is the first in a series of changes to batch file changes. First,
we have to support invalidating a snaphot with multiple files.

Updates golang/go#31553

Change-Id: I7cd83d9280e3274549a72393bb9010c47eb5dd1e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215902
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-23 01:31:03 +00:00
Rob Findley
fb353ca402 internal/lsp/cmd: add a test for client logging
A new test is added to verify that contextual logs are reflected back to
the LSP client. In the future when we are considering servers with
multiple clients, this test will be used to verify that client log
exporting is scoped to the specific client session.

Updates golang/go#34111.

Change-Id: I29044e5355e25b81a759d064929520345230ea82
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215739
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-22 21:55:43 +00:00
Muir Manders
9bae6688e3 internal/lsp/source: support dereferencing for completion
In cases like:

    var j *int
    var i int = <>

We will now provide "*j" as a completion candidate.

Change-Id: I1d35c2dca4864f13f7534e15b17450d784985557
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215358
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-22 21:43:17 +00:00
Rob Findley
78d067421b internal/lsp: remove the Context argument from NewSession
The passed-in Context is not used, and creates the illusion of a startup
dependency problem: existing code is careful to pass in the context
containing the correct Client instance.

This allows passing in a source.Session, rather than a source.Cache,
into lsp server constructors.

Updates golang/go#34111

Change-Id: I081ad6fa800b846b63e04d7164577e3a32966704
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215740
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-01-21 23:07:03 +00:00
Rob Findley
29f64efd55 internal/telemetry/log: correct the docstring for Error
Change-Id: I8077bbdd6f011087f7988fbf04c97c13575afec0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215741
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-21 22:25:47 +00:00
Heschi Kreinick
b3205ff6ff internal/lsp/protocol: handle cancellation delivery
$/cancelRequest is handled out of band in the Request flow, but was
allowed to continue down the Deliver chain. There's no sense in letting
downstream Handlers see it and try to reply like it was a normal
request.

Fixes golang/go#36662.

Change-Id: I8471ac0fdd4f2a08acd87d6e4b83c1f077eb8600
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215738
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-21 21:04:57 +00:00
Rebecca Stambler
fc669b13a2 internal/lsp: eliminate getFileLocked function
Apparently, the convention is to name something "Locked" if the
implementation is mutex is already locked when the function is called.

Turns out there were no callers of getFileLocked anyway, so just delete
that function and rename to getFile.

Change-Id: Ia7a9a620c3eb8eb0ce6b0a44ddb2ed62a604484d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215737
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-21 20:56:39 +00:00
Muir Manders
3e306b7b28 internal/lsp/source: rename "typeInference" to "candidateInference"
This is in preparation for inferring stuff beyond just the expected
candidate type.

Change-Id: I31be9c1e4c82d82b1ff848858042a5edf46594e3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215340
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-21 20:43:48 +00:00
Heschi Kreinick
d456b1cd8c internal/imports: pass dummy source for completion functions
The goimports code tries to read source from disk if none is supplied,
but the completion functions don't need source. Pass a dummy slice.

Fixes golang/go#36671.

Change-Id: Ieecc9ee75d39f8f165c7b9764ff49c8334a7fcd2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215681
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2020-01-21 20:03:11 +00:00
Rebecca Stambler
62545537a9 internal/lsp: use correct file identities when computing diagnostics
CL 214586 switched to using URIs in error messages instead of file
identities. It wasn't fully correct because the reports were being
allocated for the file identities in the package handle (which may be
outdated).

Fixes golang/go#36601

Change-Id: I4fcfc02df74d94fff49540c784ef816c357e7232
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215680
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-21 20:00:43 +00:00
Rohan Challa
bd79bb77d6 internal/lsp/cache: create infra for caching go.mod diagnostics
This change creates the infrastructure for caching diagnostics. Right now it uses a naive key of the entire snapshot which does not really add any benefit from using the cache. It also moves some code from inside the internal/lsp/mod to internal/lsp/cache.

Updates golang/go#31999

Change-Id: I599ad281baa062448d33ca0ea88ae6e09e10d73e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215021
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2020-01-21 19:43:28 +00:00
Heschi Kreinick
9375b12bd8 internal/lsp/cache: fix mod file change check
The modfiles function only works with Go 1.14. When it is enabled,
it reenters the view, causing a deadlock. Stop using it, and move the
process env under a separate lock so to break the deadlock.

Change-Id: I34c528c2be1f32c06b423ead44e90155f60c2214
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215679
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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2020-01-21 19:24:08 +00:00
Rob Findley
13c74800b9 internal/lsp/protocol: remove unused DocumentUri type
Change-Id: I8fbc8cbbb4e62c1eca4de767d054f5d098f27edd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215497
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
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2020-01-21 14:52:36 +00:00
Iskander Sharipov
dbc83e6dc0 internal/lsp/source: fix typeIsValid() inf recursion
typeIsValid() intended to stop on a named type, but
since we called Underlying(), switch case never caught any
named type. To avoid that, do an early check.

Fixes golang/go#36637

Change-Id: I2700afbb8f9678b4542e2e7dccc3be59b1d9ebdf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215238
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2020-01-21 04:27:40 +00:00
Heschi Kreinick
0cba7a3a9e internal/lsp/source: enable unimported completions by default
Fixes golang/go#31906.

Change-Id: I626ff1fe94a171d2280d9deeb4578b5abc759913
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214947
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2020-01-17 22:05:05 +00:00
Heschi Kreinick
fe56e63357 internal/lsp/source: fix ranking of untyped completions
Claiming that untyped candidates matched the type of whatever we were
looking for messed up rankings in found(). The only other places that
use it will all work better with false. Return false.

Updates golang/go#36591.

Change-Id: I5e1e8af7cc5c27422740cbb77f9a4a20edb1e447
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215322
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-17 21:50:04 +00:00
Rebecca Stambler
1486df0b25 internal/lsp: do not invoke the Go command when checking common errors
There's no need to do this more than once per view.

Change-Id: I3160adc602764204155dd0e506fd554aeb55d639
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215321
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2020-01-17 21:23:25 +00:00
Heschi Kreinick
354bea8ca8 internal/lsp/cache: let gopls track go.mod files
We used to read the go.mod file information out of the imports.Resolver.
Now that gopls tracks go.mod itself, we can use that instead. This is a
slight regression, in that go.mods in replace targets will no longer be
watched, but I don't think that's too important.

This allows us to stop reading the ModuleResolver's internals, which
were not sufficiently locked.

Updates golang/go#36605.

Change-Id: I42939e0248cba1f6b3850a003de67fcc11ab10b1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215319
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2020-01-17 21:20:11 +00:00
Rebecca Stambler
633b092c1e internal/lsp: add recency check to avoid sending old diagnostics
This change uses snapshot IDs instead of file versions to determine if
diagnostics are stale.

Fixes golang/go#36601.

Change-Id: I7727a30222fecf2d7733fa013c6cee6338ffd968
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215298
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2020-01-17 20:46:10 +00:00
Rebecca Stambler
351fb220e1 internal/lsp: invalidate directories if we have no direct IDs
Previously, we were only invalidating packages in directories if we
didn't have a file handle. We should also invalidate if we have an
unparseable file handle - that is, a file with no content or no package
name.

Fixes golang/go#36608.

Change-Id: Ia12fad962c06ddeeac382185d3220961f5c584e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215318
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2020-01-17 20:35:50 +00:00
Heschi Kreinick
95ece921ff internal/lsp/source: trim file very carefully
Apparently the AST will sometimes give us offsets past the end of the
file. Don't crash when it does.

Fixes golang/go#36610.

Change-Id: I3cfbf8645bfcea94a5d87bca5bef4236d657b2c0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215119
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2020-01-17 20:34:13 +00:00
Muir Manders
a20955124b internal/lsp: consolidate completion sorting
Move completion candidate sorting into internal/lsp/source so
source_test.go and internal/lsp don't have to duplicate the logic.

Change-Id: Ifbe7ca5ad6a5b74020fd1260b4d4f775709968cf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215137
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-01-17 20:30:43 +00:00
Rebecca Stambler
7ad9cd8f31 internal/lsp/cache: invalidate metadata for x_tests and test variants
Invalidating metadata for reverse dependencies isn't necessary, except
for in the case of test variants and x_tests.

An example:

The only way to reload the metadata for
"golang.org/x/tools/internal/lsp/cache
[golang.org/x/tools/internal/lsp/source.test]" is by reloading
"golang.org/x/tools/internal/lsp/source" with "[-test -deps]". That
means we have to invalidate the metadata for that
"golang.org/x/tools/internal/lsp/source_test" when we invalidating
"golang.org/x/tools/internal/lsp/cache".

Fixes golang/go#36165

Change-Id: Iff0e03a7a46158fbdafaffa091f90ca434700a97
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215117
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2020-01-17 17:36:07 +00:00
Rohan Challa
ade7f2547e internal/lsp: add highlighting for import statement
This change adds highlights for imports when the cursor is over the use of that import. It also adds it for the opposite direction when the cursor is on the import, it will highlight uses of that import.

Fixes golang/go#36590

Change-Id: Ifd04d81ec9b4fdf2be1b763f31b44d0ef7d92f47
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215258
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
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2020-01-17 17:07:20 +00:00
Heschi Kreinick
6edc0a871e internal/lsp/source: score in-memory unimported candidates
We were assuming that all in-memory packages were equally useful. That's
not true for projects with a large dependency tree. Call into the
imports code to score them.

While I'm here, score the main module above direct deps.

Updates golang/go#36591.

Change-Id: I07c56dd3ff7338e76f3643e18d35abc1b52d6763
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215023
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2020-01-17 01:23:04 +00:00
Michael Matloob
84cebe1034 go/packages: fix incorrect needtypes and needsrcs logic
This logic is really fiddly and I'm not really 100% sure it's right, though
I've thought about it for quite abit (and added comments to help me reason
through it).

Also always request CompiledGoFiles when NeedTypes is true because we might
need to fall back to loading from source when type data is incorrect.

Fixes golang/go#36441
Fixes golang/go#36547

Change-Id: I1cc27ca2e4401a9abc8502990b0da7d0480f6f84
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214943
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2020-01-16 22:59:55 +00:00
Rebecca Stambler
28ed04f882 go/packages: internally expose ForTests in go/packages
This change eliminates our need to guess what the package under test is
in gopls, since `go list` always knows the answer.

Change-Id: I16e482ed3b452bd57cd478b1f8280fcea56474d3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215020
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2020-01-16 22:11:50 +00:00
Heschi Kreinick
1c4842a210 internal/lsp/cache: refresh imports cache in the background
Now that we can detach scans, it's easy to kick off a background refresh
that doesn't block the user. Performance may be a bit worse until the
scan finishes, but that's the price we pay for freshness.

Adaptively rate-limit the refresh rate so that we don't turn the user's
computer into a hot plate.

Change-Id: Icbe8f384f44a219b57465da22d9becc19001eab8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212022
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-16 20:36:08 +00:00
Rebecca Stambler
872a348c38 internal/lsp: don't log context.Cancelation in diagnostics
Fixes golang/go#34103.

Change-Id: I76e713d54422d31b587cedd0e4359c8b3bc7845e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215019
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2020-01-16 18:16:51 +00:00
Muir Manders
0508ad4c83 internal/lsp/source: return obj decl first in find-references
Restore previous behavior where the object's declaration is returned
as the first reference in find-reference calls.

Fixes golang/go#36598.

Change-Id: Ibdeaf9971aa5cb1f3244f6a888fe77bdf386e563
Reviewed-on: https://go-review.googlesource.com/c/tools/+/215057
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2020-01-16 16:57:51 +00:00
Muir Manders
473961ec04 internal/lsp/source: improve completion for "range" and "<-"
Now that we understand object "kind" for builtin generic functions, we
can apply it to a couple more places as well:

// prefer rangeable object kinds
for i := range <> {
}

// prefer channels
<- <>

Change-Id: If9cfba3a06b3abde073a9d397000bb3f3b0e9853
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214678
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2020-01-16 06:24:25 +00:00
Muir Manders
f80fb1dfa1 internal/lsp: refactor find-references and rename
The main goal is to push the package variant logic from internal/lsp
into internal/lsp/source so all users of internal/lsp/source benefit.

"references" and "rename" now have top-level source.References() and
source.Rename() entry points (as opposed to hanging off
source.Identifier()). I expanded objectsAtProtocolPos() to know about
implicit objects (type switch and import spec), and to
handle *ast.ImportSpec generically. This gets rid of special case
handling of *types.PkgName in various places.

The biggest practical benefit, though, is that "references" no longer
needs to compute the objectpath for every types.Object comparison it
does, instead using direct types.Object equality. This speeds up
"references" and "rename" a lot.

Two other notable improvements that fell out of not using
source.Identifier()'s logic:

- Finding references on an embedded field now shows references to the
  field, not the type being embedded.
- Finding references on an imported object now works
  correctly (previously it searched the importing package's dependents
  rather than the imported package's dependents).

Finally, I refactored findIdentifier() to use pathEnclosingObjNode()
instead of astutil.PathEnclosingInterval. Now we only need a single
call to get the path because pathEnclosingObjNode() has the
"try pos || try pos-1" logic built in.

Change-Id: I667be9bed6ad83912404b90257c5c1485b3a7025
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211999
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2020-01-16 06:24:15 +00:00
Heschi Kreinick
7042ee646e internal/lsp/source: always look up mapper when building ranges
Any file could have //line directives in it, which means that we should
never trust a mapper that was looked up for a whole file. Remove the
range conversion helpers that accepted a mapper and look it up on the
spot.

Change-Id: Ic518891fcc1a682b31cbc6d1d4e1e1af1ef21962
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214949
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2020-01-16 01:10:02 +00:00
Muir Manders
49797d04a8 internal/lsp/source: improve completion in type assertions
In cases like:

var foo *someType = bar.(some<>)

We will now complete "some" to "*someType". This involved two changes:

1. Properly detect expected type as *someType in above example. To do
   this I just removed *ast.TypeAssertExpr from
   breaksExpectedTypeInference() so we continue searching up the AST for
   the expected type.

2. If the given type name T doesn't match, also try *T. If *T does
   match, we mark the candidate as "makePointer=true" so we know to
   prepend the "*" when formatting the candidate.

Change-Id: I05859c68082a798141755b614673a1483d864e3e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212717
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2020-01-16 01:06:23 +00:00
Rebecca Stambler
96555e0fa5 internal/lsp/cache: initialize view before LookupBuiltin
This will crash otherwise.

Change-Id: I4fbce813283291792ed21fa5d83186ec59543ff1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214948
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2020-01-16 00:42:58 +00:00
Rebecca Stambler
a7dab0268b internal/lsp: diagnose the snapshot on every text synchronization event
This change moves to our ultimate approach of diagnostics the snapshot
on every file change, instead of carefully picking which files and
packages to diagnose. Analyses are shown for packages whose files are
open in the editor. Reverse dependencies are no longer needed for
source.Diagnostics because they will be invalidated when the snapshot is
cloned, so diagnosing the entire snapshot will bring them up to date.

This even works for go.mod files because all of workspace-level `go list`s
will be canceled as the user types, and then we trigger an uncancellable
go/packages.Load when the user saves. There is still room for improvement
here, but it will require much more careful invalidation of metadata for
go.mod files.

Change-Id: Id068505634b5e701c6f861a61b09a4c6704c565f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214419
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2020-01-15 23:07:48 +00:00
Rebecca Stambler
97cd989a76 internal/lsp: remove boolean for publishEmpty in diagnostics
This parameter was added to avoid sending a slew of empty diagnostics
for the initial workspace load. It's actually not needed anymore, as we
can just detect if we have previously sent diagnostics for the given
file, and if not we shouldn't send an empty diagnostic. This is true for
all cases, not just the initial workspace load.

Change-Id: I34a323bc0c0df79edd39630cd25577238b256266
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214287
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2020-01-15 22:25:09 +00:00
Rebecca Stambler
f04f2c82d0 internal/lsp/cache: refactor initialization for builtins
This change combines the two packages.Load calls that happen on view
creation. Builtins can be loaded along with the rest of the workspace.

To avoid race conditions, create a builtinPackageHandle type for
builtins and use it to create the data.

Updates golang/go#36531

Change-Id: I7aa342c463a0b7718e1ad5fee507622310d8443b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214877
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2020-01-15 21:04:26 +00:00
Rebecca Stambler
497c7f156c internal/lsp/cache: construct package handles as part of IWL
Package handles should be cached on the snapshot as part of the initial
workspace load, otherwise this cached data will be repeatedly lost and
reconstructed during tests and regular execution.

Fixes golang/go#36556

Change-Id: If7676685db17519c998b857a812467c7f3cc6003
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214799
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2020-01-15 19:55:33 +00:00
Heschi Kreinick
3ded1b734d internal/lsp: add and use nonstandard gopls/diagnoseFiles
Switch the command line client, and its tests, away from the hardcoded
30-second timeout and to a newly-added custom request.

Inconveniently for us, the jsonrpc2 package only serializes requests,
not replies. (Notifications are requests for this purpose.) So, for a
flow like this:

diagnoseFiles -->
  <-- publishDiagnostics
  <-- publishDiagnostics
diagnoseFiles <-- (reply)

...there's actually no guarantee that the incoming requests will be
processed before the reply comes in -- it gets to jump the
serialization. The only way to guarantee previous notifications have
been processed is to send another request. I didn't feel like adding
nonstandard notification support, so I just send a fake diagnostic.

Error handling for untyped JSON is hideous so for now we just panic.
Nobody else should be calling these, or if they do it's at their own
risk.

Fixes golang/go#36518.

Change-Id: I63f8df5bb627c9783314a0d38d2dac8721b3c320
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214583
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2020-01-15 19:23:06 +00:00
Rohan Challa
de0b176007 internal/lsp: show dependency quick fixes for go.mod diagnostics
This change adds quickfixes for unused dependencies and dependencies that should not be marked as indirect. It also updates the positions for the diagnostics to make more sense relative to the warning message. There is a testing harness now for suggested fixes.

Updates golang/go#31999

Change-Id: I0db3382bf892fcc2d9ab3b633020d9167a0ad09b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213917
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2020-01-15 16:51:05 +00:00
Rob Findley
98c82cf1f4 internal/lsp: add server instance to debug info
When debugging multiple instances of gopls simultaneously, it is useful
to be able to inspect stateful debugging information for each server
instance, such as the location of logfiles and server startup
information.

This CL adds an additional section to the /info http handler, that
formats additional information related to the gopls instance handling
the request.

Updates golang/go#34111

Change-Id: I6cb8073800ce52b0645f1898461a19e1ac980d2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214803
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Run-TryBot: Robert Findley <rfindley@google.com>
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2020-01-15 14:58:21 +00:00
Rob Findley
7fd989f60c internal/lsp/tests: correct typo 'CompletionCaseSensitve'
CompletionCaseSensitve is renamed to CompletionCaseSensitive.

Change-Id: I060d02cd72d271d0a1f5595ca35c55e7e142c996
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214802
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
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2020-01-15 14:33:14 +00:00
Rob Findley
df87866820 internal/lsp,internal/telemetry: correct stale docstrings
Several docstrings reference earlier names for the symbols they
document. This CL corrects those that I noticed while reading the lsp
code.

Change-Id: I1968459feff7011e070333c99eb149e72d3302de
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214801
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-15 14:25:42 +00:00
Rebecca Stambler
831fdb1e18 internal/lsp: push initialization tasks into one function
This change moves as much view initialization code into the
initialization function, instead of having it happen on view create.
Also, the `go env` variables that are collected at inconsistent times
are all collected on view creation. That is sufficient, since the view
is recreated if the environment changes.

I had originally hoped that the initial call to `go env` and the
-modfile detection could become part of this parallel initialization as
well, but you can't create a *packages.Config until the temporary
modfile has been set up, so it still makes sense to do that on view
create. This is, however, the reasoning behind the refactorings in
the -modfile detection in this CL. The main changes are a few renamings
and a split between snapshot.ModFiles and view.modFiles to maximize the
amount of work done in the view. I changed view.modfiles to moduleInformation
because I thought we might want to store additional information there at some
point. Rohan, please let me know if you disagree with any of the changes I made,
and I can revert them.

Fixes golang/go#36487

Change-Id: I504db5a4f41b79bee99ebd391e32e7b520a19569
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214417
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rohan Challa <rohan@golang.org>
2020-01-15 04:46:56 +00:00
Rob Findley
7ae403b6b5 internal/lsp: finish renaming CheckPackageHandle to PackageHandle
In golang.org/cl/209419, CheckPackageHandle was renamed to
PackageHandle, but a number of references to CheckPackageHandle remained
in function names and comments.

This CL cleans up most of these, though there was at least one case
(internal/lsp/cache.checkPackageKey) where the obvious renaming
conflicted with another function, so I skipped it.

Change-Id: I517324279ff05bd5b1cab4eeb212a0090ca3e3ad
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214800
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
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2020-01-14 23:56:10 +00:00
Heschi Kreinick
3d14842334 internal/imports: load test exports of package under test
x_tests can access exports from the test variant of the package under
test. Change loadExportsFromFiles to understand that mode, and use it
where appropriate.

I didn't want to come up with a cache key for for the test variant, so
for now we bypass the cache in these situations.

Fixes golang/go#29979.

Change-Id: I9959a08da97bbee64c5bcd56e06f548486693156
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213221
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2020-01-14 23:54:10 +00:00
Rebecca Stambler
f986e617de internal/lsp: make sure diagnostics with analyses are not overwritten
The initial workspace load does not send analyses with diagnostics, but
subsequent diagnostic requests do. If we've already sent diagnostics
with analysis for a file at a given version and snapshot, do not resend
diagnostics for the same file version with analyses.

Change-Id: I6979aa308e8846ff0cb66bd23e0dac488eae5446
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214587
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2020-01-14 22:43:10 +00:00
Rohan Challa
579903b3ad internal/lsp: add mapper for go.mod files
This change adds a protocol.ColumnMapper when parsing go.mod files. This will prevent us from having to worry about line and column offsets, specifically when converting from the x/mod/modfile position to a span.Span.

Updates golang/go#31999

Change-Id: Iacdfb42d61dfea9b5f70325cf5a87c9575f8f345
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214699
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2020-01-14 22:04:35 +00:00
Heschi Kreinick
3be912efc3 internal/lsp/protocol: support nonstandard requests
Support arbitrary client->server requests in the generated code. This is
primitive, with no strong typing, but should be good enough for simple
requests. We can do something fancier later if we want.

Change-Id: Ib83ff6aa49418bda5222b37cde3b150a26552221
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214582
Run-TryBot: Heschi Kreinick <heschi@google.com>
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2020-01-14 21:52:24 +00:00
Rebecca Stambler
9c46c2c3da internal/lsp: fix flaking internal/lsp/cmd tests
Reloading metadata on demand fails for some our test packages,
because I don't understand how to construct arguments to commands.

Change-Id: Ib18454a09772e854a612528af898d06ce14133c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214717
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Reviewed-by: Heschi Kreinick <heschi@google.com>
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2020-01-14 21:42:16 +00:00
Rebecca Stambler
189207f339 internal/lsp: use URIs instead of FileIdentity in errors
This change modifies the source.Error type to have a URI instead of a
FileIdentity associated with an error.

Change-Id: I8056bdc881dd3ec43af02cca1366815c0bc6dfcd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214586
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-01-14 19:14:11 +00:00
Muir Manders
d31a08c2ed internal/lsp/source: improve completion support for args to builtins
We now understand what "kind" of type is expected when using various
builtins. For example, when completing "close(<>)" we prefer channels,
and when completing "delete(<>)" we prefer maps.

I also added some code to infer the expected type for the second
argument to "delete()" and for the args to "copy()":

delete(map[someType]int{}, <>) // expect "someType"

copy([]int{}, <>) // expect "[]int"
copy(<>, []int{}) // expect "[]int"

And I marked "new()" as expected a type name, and it infers the type
name properly:

var _ *int = new(<>) // expected type at "<>" is "int"

Fixes golang/go#36326.

Change-Id: I4295c8753f8341d47010a0553fd2d0c2586f2efa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212957
Run-TryBot: Muir Manders <muir@mnd.rs>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-14 05:24:53 +00:00
Rebecca Stambler
3b9e235283 internal/lsp: fix context cancellation
Change-Id: Ib932722b0e66910b8cd23031e756f16099ee82dc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214581
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-01-14 01:26:48 +00:00
Rebecca Stambler
294c8f8251 internal/lsp: use latest file versions in diagnostics
This change makes sure that diagnostics are sent with the most recently
seen version for a file, instead of a cached version.

Fixes golang/go#36476

Change-Id: Ibac2757099fdfc71989987cf5851a678f589aadf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214422
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-14 00:45:52 +00:00
Rebecca Stambler
5a294e27f3 internal/lsp: allow subdirectories of module roots when checking errors
Previously, we would surface a warning message if a user had a missing
dependency in a subdirectory of their module root. This is not
necessary, so do a better job checking for that case.

Change-Id: Ib6fcdcbf6ac191478b9bb1f5f8a55d154fd30b5a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214420
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-14 00:24:04 +00:00
Rohan Challa
544dc8ea2d internal/lsp: change go1.14 check to be more lenient
This change adds the -e flag to ensure that we get the release tags when we are checking if the go version is at least 1.14. This also adjusts the check to be more lenient when it comes to processing the output of the version check.

This also fixes another issue where if the version is not 1.14 we were publishing empty diagnostics for an empty uri. This arose because we did not check if there was a valid go.mod file before we published the reports.

Fixes golang/go#36488

Change-Id: I5a8057c153f49167811e2bf8e4ade52bf6171d6b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214290
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
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2020-01-13 22:38:16 +00:00
Rebecca Stambler
533f309ed4 internal/lsp: reload workspace package metadata on demand
This change removes functions from the snapshot that return package IDs.
We prefer PackageHandles, since getting PackageHandles in a granular
fashion is not effective and causes us to spawn many `go list`
processes. By only ever returning PackageHandles, we can batch metadata
reloads for workspace packages. This enables us to add a check to
confirm that the snapshot is in a good state before returning important
data, like reverse dependencies and workspace package handles.

Change-Id: Icffc8d8e0449864f207c15aa211e84cb158c163f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214383
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2020-01-13 20:10:07 +00:00
Rebecca Stambler
8f45075ebc internal/lsp: merge completion options into source.Options
This change flattens the completion options type into UserOptions and
DebuggingOptions, which will enable us to generate documentation for
these options more effectively. This results in some modifications in
the tests.

Additionally, the fuzzyMatching and caseSensitive boolean flags are
merged into one setting, matcher, which can be used to specify the type
of matcher that is used for completion. Other requests (notably
workspaceSymbols) may need to use a matcher in the future.

Change-Id: I185875e50351be4090c7a2b3340d40286dc9f4a0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212635
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-01-13 20:09:44 +00:00
Rebecca Stambler
6316571e2c internal/lsp: don't require type-checking for formatting
We had previously required a type-checked package for formatting
requests, in order to determine if the package contained any parse
errors. We can get this information directly from the ParseGoHandle, so
there is no need to check the package. This will prevent `go list`
errors from making their way into formatting requests, for which a `go
list` really is not needed.

Updates golang/go#36511

Change-Id: I297f8880367e800d2343f468535efa80d2937071
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214421
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2020-01-13 19:43:37 +00:00
Rebecca Stambler
86d412b4c6 internal/lsp: fix support for watching changed files
This is the beginning of the CLs to refactor the file watching code with
the normal text synchronization code. This hasn't yet been tested other
than with some minimal local testing, so follow-up CLs will be needed.

Updates golang/go#31553

Change-Id: Id081ecc59dd2903057164171bd95f0dc07baa5f1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214277
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2020-01-13 19:19:55 +00:00
Rebecca Stambler
4a54ec1d38 internal/lsp: remove view.FindPosInPackage and view.FindMapperInPackage
There is no reason for these functions to live on the view. They make
more sense as unexported functions in internal/lsp/source.

Initially, I had to propagate contexts through a lot of functions in
internal/lsp/source, but instead I removed the unused contexts forom
snapshot.GetFile.

Change-Id: I8323419d0356feb2010091fe8d3ed35e511f801a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214384
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2020-01-13 18:51:11 +00:00
Rohan Challa
30cae5f2fb internal/lsp: surface diagnostics for invalid go.mod files
This change will surface errors that come from the mod package. It will handle incorrect usages, invalid directives, and other errors that occur when parsing go.mod files.

Updates golang/go#31999

Change-Id: Icd817c02a4b656b2a71914ee60be4dbe2bea062d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213779
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2020-01-13 15:48:38 +00:00
Muir Manders
eac381796e internal/lsp: fix completion ordering workaround
Our loop to make all candidates use the same "filterText" wasn't
including the final candidate. This was causing strange ordering of
candidates in VSCode when the "worst" candidate happened to match the
prefix exactly (causing VSCode to reorder it to the top).

Fixes golang/go#36519.

Change-Id: Ie2119ca94d13f337edd241fbde862706bdeee191
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214184
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2020-01-13 04:08:37 +00:00
Rebecca Stambler
a7a6caa82a internal/lsp: initialize the view on creation
This change moves the initialization of the view into the view's
creation, instead of forcing the tests to call WorkspacePackageIDs to
initialize.

Change-Id: Iccea820ec268b1851d58821481d92c7a3d4772c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214279
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2020-01-10 21:31:25 +00:00
Rebecca Stambler
3e6f5d44f4 internal/lsp: don't invalidate workspace when a mod file is opened
Opening a mod file is not sufficient cause to invalidate in the
workspace, so don't.

Change-Id: I2b7703008528e4469be312165deb17fe6856fd74
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214259
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2020-01-10 21:20:43 +00:00
Rebecca Stambler
945ed6e034 internal/lsp: fix link handling for links without schemes
Unfortunately, this can't be tested until golang/go#35880 is resolved,
because only the third-party xurls library detects links without
schemes.

Change-Id: I620581d6ce99c79ae89f3f22ea8ee634c3850a8e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214280
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2020-01-10 21:19:44 +00:00
Rebecca Stambler
e8a26f4160 internal/lsp: prevent initial workspace load from being canceled
In one of the many iterations on CL 212102, the contexts propagated
through the initial workspace load were allowed to be canceled. This
should not be allowed because the initial workspace load has to be
completed.

Change-Id: I6c6273b4e58fb9041af518f329f4766ed5f1f81b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213641
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2020-01-10 21:08:40 +00:00
Rohan Challa
428f1ab0ca internal/lsp/mod: test go.mod is unchanged when tempModfile=true
This change adds a test to ensure that your go.mod file remains unchanged when the tempModfile flag is activated. Specifically, it adds a test to ensure that a go directive does not get added to a user's go.mod file when there was not one included before.

Updates golang/go#36247

Change-Id: If8db5508ace5b7222112408255ffa66e4d38797f
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2020-01-10 14:27:00 +00:00
Rebecca Stambler
e2f26524b7 internal/imports: create listener map after clearing for new scan
The module resolver needs to recreate the listener map if it's cleared
for a new scan.

Change-Id: If5e945d4f2059f2a79aef3129f963a2c50e90229
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214278
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2020-01-10 04:28:03 +00:00
Heschi Kreinick
563860d11d internal/imports: fix use of uninitialized resolvers
Resolvers are lazy initialized. That worked fine until the addition of
the scan semaphore -- it's not a good idea to create that lazily, since
you can't synchronize on a channel that doesn't exist.

Specifically, this caused a gopls hang when completion finished without
needing to use the resolver. In that case, we'd call ClearForNewScan/Mod
on an uninitialized resolver, and then hang receiving from a nil
channel.

Instead, eagerly initialize where convenient, and particularly the scan
semaphore.

Change-Id: I3adb1ae76b751650995e50f50346e06fd9c9f88d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214258
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2020-01-10 00:40:31 +00:00
Rebecca Stambler
0a1579a33b internal/lsp: don't run full workspace diagnostics on mod file change
Minimize the issues at master by not running workspace-level diagnostics
on mod file changes. Once the initial workspace load stabilizes we will
be able to go back to that approach.

Also, a couple of minor changes along the way while debugging.

Change-Id: Ib3510e15171326a1b89f08ef0031a3ef7d9ac4ec
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214257
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2020-01-10 00:12:05 +00:00
Heschi Kreinick
5d34a75004 internal/imports: don't block completions on walks
Filesystem walks of large GOPATHs/module caches can take seconds,
especially on systems with slow filesystems like MacOS and WSL. We don't
want to block completion requests on walks finishing. At the same time,
cancelling a walk midway through results in an unusable cache, where we
don't know which parts have been scanned so far.

The best option is to run the walks in a separate goroutine. Then we can
detach and let them finish. On the other side, we need to be able to
reattach for the next completion request.

Introduce a new method on caches, ScanAndListen, which first processes
all the items in the cache, then notifies of any new items. This allows
us to reattach to an existing scan without missing anything.

The background scan introduces concurrency to the resolvers where there
wasn't any before. We can't use mutexes, because there's no way to stop
Lock() when a context expires. Use a 1-element semaphore channel to
accomplish the same effect.

Along the way: Only rescan GOPATH if the resolver has been cleared. None
of this makes sense for GOPATH without that. Fix a bug where we were
scanning the main module twice in module mode. Stop loading exports in
module tests, it slows them down a ton.

Change-Id: I978efae733ccba0c0cdc8e8fe6892bf5f15feac8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213217
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2020-01-09 22:24:46 +00:00
Rebecca Stambler
a9a43c4726 internal/lsp: store workspace package IDs with package paths
A test variant for a package can only be reloaded by running go/packages
on the non-test variants import path with the -test flag. We need to
cache this import path in order to be able to reload a test package
on-demand.

Also, always ignore test main packages by detecting them in the
metadata.

Fixes golang/go#36473

Change-Id: I6e5a61c8e73689212303ae09fa3aed4a2ee8762a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213660
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2020-01-09 22:04:34 +00:00
Rebecca Stambler
8a1a3df092 internal/lsp: allow diagnostics to be computed per-file or per-package
This change splits source.Diagnostics into source.FileDiagnostics and
source.PackageDiagnostics. There isn't much difference in functionality,
but this just simplifies the process of getting diagnostics if you only
have a PackageHandle.

Change-Id: I62c0de8778065a4c46cc5672e2834ce5c63fe012
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213644
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2020-01-09 21:49:23 +00:00
Rebecca Stambler
700ee2612c internal/lsp: propagate errors from find references
We were ignoring errors in a few cases and returning incorrect errors in
the case of the command-line interface (no identifier found when there
were just no references). I think it is better for references to return
an error than incomplete results.

Change-Id: Id90bca58ebdd9f6a910853cb4ac5b6ab6bec57f8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213817
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2020-01-09 21:23:09 +00:00
Rebecca Stambler
dfcf57064e internal/lsp: stop requiring file kind when fetching a file
This change consolidates the FileKind into only the FileHandle.
Previously, it had been set in multiple places, which required users to
pass in a FileKind when fetching a file. This resulted in confusion,
particularly in places when users did not have access to the file kind.

Change-Id: I9e07d7320c46a21d453ffe108d1431a615706a71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213459
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-09 21:19:36 +00:00
Rebecca Stambler
487733262f internal/lsp: don't send diagnostics for old file versions
This isn't a strictly necessary change, but it simplifies things for
open files when the initial workspace load diagnostics come in too late.

Updates golang/go#36452

Change-Id: I85a9c201876b7c63a97d8dca020fc396b3c57706
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213820
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-09 21:16:13 +00:00
Rebecca Stambler
675cf513f4 internal/lsp: warn user in case of a multi-file ad-hoc package
This change surfaces a warning to the user if they might be coding in a
multi-file ad-hoc package.

Updates golang/go#36416

Change-Id: Ifaa15a0777ea97e62c1477fb33911636b13e073e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213458
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-09 20:44:29 +00:00
Rohan Challa
f270e23f6a internal/lsp: add warning diagnostics for unused dependencies in go.mod files
This is the first step to surfacing potential fixes and suggestions to a user's go.mod file. Specifically, it will show a warning if you have a dependency that is not used, or if a dependency is declared as indirect when it should be direct and vice versa.

This CL adds functionality for version of Go that are >= 1.14.

Updates golang/go#31999

Change-Id: Id60fa0ee201dcd843f62e2659dda8e795bd671db
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211937
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-09 20:05:13 +00:00
Muir Manders
89082a3841 internal/lsp/source: fix some invalid literal candidates
We were marking all literal candidates as addressable so we were
getting invalid candidates like "&int()". Fix it to only mark literal
struct, array, slice and map types as addressable.

I also fixed the unnamed literal candidate to pass the dereferenced
expected type. For example, if the expected type was "*[]int" we were
passing a literal type of "*[]int" which wasn't working anymore. Now
we pass "[]int" and take its address as "&[]int{}".

Change-Id: I5d0ee074d3cc91c39dd881630583e31be5a05579
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212677
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-08 20:36:44 +00:00
Heschi Kreinick
316d2f2484 internal/lsp/source: only add names to imports when necessary
As usual, I forgot to clear out the import spec's name when it matches
the import path.

Change-Id: I4ddd49b70e0db95fcd30d2968b098327fac39a92
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213222
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Muir Manders <muir@mnd.rs>
Reviewed-by: zikaeroh <zikaeroh@gmail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-08 19:54:15 +00:00
Rohan Challa
acbc0e3ba1 internal/lsp: modify how we check for go 1.14 for modfiles
When the tempModfile flag was enabled, there would be some go
commands that would run without the -modfile flag. This change adds
the config's buildFlags to the invokeGo command in go/packages and
updates how we are checking if the go version is 1.14 within the
modfileFlagExists function.

Fixes golang/go#36247

Change-Id: I436666c3fcad33e85ba00aec5f227fe4a0e638b8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212477
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-08 19:23:01 +00:00
Rebecca Stambler
11e9d9cc00 internal/lsp/source: set default InsertTextFormat to PlainText
CL 212519 unintentionally changed the default for this option.

Change-Id: I42df51ba68e78af1493d0461ad4efff3dd55da9d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213640
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-07 18:40:32 +00:00
Muir Manders
a222fb47e2 internal/lsp/source: don't downrank builtin constant completions
We downrank untyped constant candidates so that we prefer candidates
whose type matches exactly. However, this was causing builtin
constants like "true" to be outranked by candidates that fuzzily match
"true". Fix by not downranking builtin constants.

Fixes golang/go#36363.

Change-Id: I14801688c96efdbb7ff9fee69f66028530df984c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213137
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-07 18:15:58 +00:00
Rebecca Stambler
7201abb308 internal/lsp: parallelize initial workspace load
The initial workspace load was happening when a view was created, in serial.
It should really just be kicked off in a separate goroutine once we create a
new view. Implementing this change required some other significant changes,
particularly the additional work being done by the WorkspacePackageIDs
method.

Some other changes had to be made while debugging. In particular, the
modification to the circular dependencies test was a consequence of
golang/go#36265.

Change-Id: I97586c9574f6c4106172d7983e4c6fad412e6aa1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212102
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-07 18:15:18 +00:00
Rebecca Stambler
7be0a674c9 internal/lsp: fix minor bug in the PackageHandle function
Test variants and test mains can result in multiple packages being
loaded for a single ID. Handle this case in the PackageHandle function
instead of returning an error.

Change-Id: Ic0024c5bded162a3e78a9cdcb9566449f3683e35
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213457
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-06 19:01:16 +00:00
Heschi Kreinick
774c71fcf1 internal/lsp/cache: fix type error reporting in cgo
When dealing with cgo files, we need to pass a Mapper for the authored
file. I got most of the sites in CL 208501, but missed this one.

I was nervous about starting to propagate errors, but all the tests
passed, so shrug.

Change-Id: I7505e670e9c01d719c72c3f99d01c8153c3d2ff5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212862
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-03 22:14:40 +00:00
Heschi Kreinick
7bda30096d internal/imports: actually skip things in scan
An important part of letting the callback choose what to load is...not
loading the stuff it doesn't want.

Change-Id: I4048d7aed756b6ebc26fb6f8e384f44c64281f90
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213129
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-01-03 21:11:27 +00:00
Rebecca Stambler
6de373a276 internal/lsp: fix minor issues in diagnostic caching
There were a few cases that we were missing when caching diagnostics.
The first was caching empty diagnostics from the initial workspace load,
so we were resending old empty diagnostics. The second missing case was
resending diagnostics for the same version of a file.

Fixes golang/go#36340.

Change-Id: I5c55b47a60fe94b10e76be99714cb983f9b84b54
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213122
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-02 20:01:21 +00:00
Daisuke Suzuki
27f5d1b104 internal/lsp/cmd: fix documentation
Change-Id: I60d6337b07b2cad4d20d877d61b11ebe33d26cf6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212582
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2020-01-02 17:13:01 +00:00
Rebecca Stambler
2aa90c603a internal/lsp: miscellaneous cleanup
CL 212102 contains a few cleanup-type fixes that are unrelated to the
actual content of that CL. Pull them out to make the diffs simpler.

Change-Id: I6b7e34320f2889d05179c8aeb8cb7f8f4c505a3b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212917
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-30 22:03:29 +00:00
Heschi Kreinick
ba16e80ae2 internal/imports: filter out self-import completions
Fixes golang/go#36321.

Change-Id: Ic6cdad4b611e5a16e086743f53f85bcb71070a21
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212897
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:44:38 +00:00
Heschi Kreinick
1e586a538e internal/imports: clean up dead code
Now that we're storing module information per-directory, we don't need
to pre-compute the need for a replace statement. And we never have the
package name in the place it used to be set.

Change-Id: I3b0845dc49f52f8c449840410dbb786fe903d29d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212861
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:21:44 +00:00
Heschi Kreinick
9a28a1fa70 internal/lsp/source: scan loaded packages first for completions
Packages that have already been loaded by gopls are more likely to be
used, and have full type information. Check them for completion
candidates before scanning the disk.

Also, minor bug fixes: add a missing mutex, and use a lower-than-usual
score for typed unimported completions.

Change-Id: I46388802913f9a89342fb47290f704b471154ec0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212860
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:21:36 +00:00
Heschi Kreinick
2f3125dfbf internal/imports: filter candidates on directory name
When finding completion candidates, we can use the same tricks
goimports uses to ignore directories that look irrelevant.

Change-Id: I114a3d4e487aed7f59fc48b2f86d42129baf5183
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212859
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:21:29 +00:00
Heschi Kreinick
872f4f411e internal/imports: filter roots with callback
Now that we have all these callbacks, it's strange to have a list of
root types to exclude on the side. Merge that into the callback.

Change-Id: I8dc88e095362a8d2e180196ad9b81e17d4d34949
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212858
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:11:40 +00:00
Heschi Kreinick
7ec15289dd internal/imports: optimize scan implementations
In scan implementations, stop after cancellation, and swallow the
context's error for convenience.

In the module implementation specifically, try to avoid scanning if the
cache is enough to satisfy the user. When we do have to scan, prioritize
module dependencies before the whole cache.

Change-Id: I23dc98df016f9fca4f31c7ded3d11bc257c29b94
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212857
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:11:33 +00:00
Heschi Kreinick
c2a8f45ada internal/imports,lsp: use callbacks for completion functions
We only need to return a relatively small number of completions to the
user. There's no point continuing once we have those, so switch the
completion functions to be callback-based, and cancel once we've got
what we want.

Change-Id: Ied199fb1f41346819c7237dfed8251fa3ac73ad7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212634
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:11:27 +00:00
Heschi Kreinick
3f7dfa39cf internal/lsp: sort by label after score
I want to stop sorting unimported completions. We still want to show
users something reasonable, so use label as a tiebreaker for score in
the higher level completion function.

To maintain the current sorting, we need to adjust scores by search
depth (height?) for lexical completions. A few tests are really ties,
and need sorting in the test case.

Change-Id: Ie2d09fdcbebf6fda4ab33a2f16c579d12b0f26ad
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212633
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:11:21 +00:00
Heschi Kreinick
0a57c09236 internal/lsp/source: always use default goimports options
No point in constructing the defaults in three places.

Change-Id: I2b0776910a933a7250245bd82dc27e63c34df18a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212632
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:10:29 +00:00
Heschi Kreinick
50c778fb86 internal/imports: redesign scan API
We have multiple use cases for scanning: goimports, import completion,
and unimported completions. All three need slightly different features,
and the latter have very different performance considerations. Scanning
everything all at once and returning it was not good enough for them.

Instead, design the API as a series of callbacks for each
directory/package: first we discover its existence, then we load its
package name, then we load its exports. At each step the caller can
choose whether to proceed with the package. Import completion can stop
before loading exports, goimports can apply its directory name
heuristics, and in the future we'll be able to stop the scan short once
we've found all the results we want for completions.

I don't intend any significant changes here but there may be some little
ones around the edges.

Change-Id: I39c3aa08cc0e4793c280242c342770f62e101364
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212631
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:10:22 +00:00
Heschi Kreinick
ac3e9e73d1 internal/imports: remove go/packages support
We don't use the go/packages resolver in goimports, and as we develop
gopls it only becomes harder to use there. Give up.

Change-Id: Ic8b566c6dd730b23b0c81d7d34a41f16fe0be7e8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212630
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:10:16 +00:00
Heschi Kreinick
fd66c7521c internal/lsp/source: don't get unnecessary unimported completions
Unimported completions are always low-priority. If the user already
has 100 completion options, the unimported ones are probably not useful.
There's no point in calculating any of them.

Also, only do unimported completions for package members when they're
enabled. Oops.

Change-Id: I7535a22ad56bed869dceb6cd0ffdfc6390cf8eb5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212629
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:10:09 +00:00
Rebecca Stambler
234df48a20 internal/lsp: load metadata for a single package ID, when needed
The metadata for the workspace packages may not be available when we
need it, so we should allow loading a single package ID. This can be
improved in follow-up CLs by consolidating the individual IDs into one
call to packages.Load. Some adjustments from CL 212102 were split out
into this CL.

Change-Id: I173a79a3cb136530bc99d093f1c2be189eac8ce2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212628
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-30 21:09:35 +00:00
Dan Kortschak
6c68fec0bc all: remove many cases of space-space
Change-Id: I49eb8410d4143c67dfccf027f8b2794e66963415
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212580
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-30 19:07:42 +00:00
Dan Kortschak
9fb4d21460 tools/internal/lsp/cmd: fix documentation
Change-Id: Ie21babc8879977fb1a3ef02737dbd24904722c26
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212579
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-30 18:10:14 +00:00
Rebecca Stambler
7b8e75db28 internal/lsp: create links for golang/go#1234-style strings
This change treats text of the format golang/go#1234 as a link to the Go
issue tracker. This will improve the readability of TODOs that include a
link to an issue, since it doesn't have to be an actual link.

Change-Id: I27606ceb9cbb15bc6bfb1d7aa660d3f4fdd08739
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212518
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-27 05:39:25 +00:00
Rebecca Stambler
99d11d0e63 internal/lsp: refactor and document options
This change cleans up the structure of the Options struct in order to
clearly delineate which options should be configurable for the user.
Follow-up work is needed to refactor the completion options to fit into
this structure, as well as to make sure that the name of the field is
the name of the setting. This will make it easier to generate markdown
documentation from the code.

Also, remove options that are no longer in-use and mark them as
deprecated.

Change-Id: Ib34ae25789e21b76077a564601e487fbebfc5f48
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212519
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-27 05:17:27 +00:00
Koichi Shiraishi
819aba5d6d internal/lsp/cmd: remove unnecessary message from help
remove "goplsgoplsserve" from before the main commands output.

Change-Id: Ib41376d4ad4b601650730f053682868408617c4d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212577
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-27 05:00:04 +00:00
Rebecca Stambler
6b505debf4 gopls: use mvdan.cc/xurls for textDocument/documentLink
Our current implementation isn't robust, and it doesn't seem worth it to
invest significant effort in improving it when this library exists.

Also, make the protocol part of the default URL regex non-optional, as
the alternative is that any string of the format "foo.bar" will appear
to be a link.

Updates golang/go#33505

Change-Id: Ia430a1c193eded394f8af12050bdd4dc2a9ccc94
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212517
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-26 21:20:25 +00:00
Muir Manders
dd894d0a8a internal/lsp: trim address operator from completion filterText
VSCode doesn't like (read: ignores) candidates whose filterText begins
with "&", so trim it off.

I also tweaked "addressed" candidates to include the "&" prefix in the
item label as well so the user can see what they will get.

Change-Id: I85840d036e379a202b72e28c5257807a069ae45d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212406
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-24 05:57:32 +00:00
Muir Manders
3721262b3e internal/lsp: support taking address for completion candidates
We now support taking the address of objects to make better completion
candidates. For example:

i := 123
var p *int = <> // now you get a candidate for "&i"

This required that we track addressability better, particularly when
searching for deep candidates. Now each candidate knows if it is
addressable, and the deep search propagates addressability to child
candidates appropriately.

The basic propagation logic is:

- In-scope *types.Var candidates are addressable. This handles your
  basic "foo" variable whose address if "&foo".

- Surrounding selector is addressable based on type checker info. This
  knows "foo.bar.<>" is addressable but "foo.bar().<>" isn't

- When evaluating deep completions, fields after a function call lose
  addressability, but fields after a pointer regain addressability. For
  example, "foo.bar()" isn't addressable, but "foo.bar().baz" is
  addressable if "bar()" returns a pointer.

Fixes golang/go#36132.

Change-Id: I6a8659eb8c203262aedf86844ac39a2d1e81ecc4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212399
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-23 23:54:10 +00:00
Muir Manders
918115ff85 internal/lsp: refactor find-implementation handling
This is the start of a significant refactoring to implementations,
references, and rename (i.e. everything that searches across
packages). The main goal of the refactoring is to push the package
variant logic from internal/lsp into internal/source so that all users
of source benefit, not just internal/lsp. It also makes it easier to
write tests for various cases because the source tests invoke the
source package directly (so previously did not include all the package
variants).

Currently source.Identifer() handles lots of disparate use cases.
Things like definition and hover don't care about package variants but
do care about other random bits of info that may not apply to
implementations or references. So, I'm splitting implementations out
from source.Identifier. As I work through references and rename
hopefully things will end up separated into smaller chunks.

I also improved implementation deduping to happen earlier. I thought I
could dedupe using obj.Pos(), but mirror objects in package variants
have different positions (suggesting they aren't reusing the
same *ast.File). Instead I used token.Position to dedupe.

Change-Id: I81c2b3ec33bf12640accb852be9ecdea4aa24d69
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211718
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-23 22:59:19 +00:00
Muir Manders
4d2fe2ba67 internal/lsp/source: move some data onto "candidate" struct
Make the score and import info be fields on "candidate" since they are
properties of the candidate. There shouldn't be a functional change
here; I'm just consolidating things in preparation for an additional
piece of candidate metadata.

Change-Id: I4c7c8ef40e8e5db7b52691cca21490ba13c17642
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212398
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-23 22:26:30 +00:00
Muir Manders
7bd96bd597 internal/lsp/source: improve completion in value spec
If the enclosing value spec specifies a type on the LHS, we now prefer
completions of that type on the RHS. For example:

i := 123
var foo int = // prefer "i" since we know we want an int

I also added a special case to lexical() to know that we can't offer
objects defined on the LHS as completions on the RHS. For example:

var foo int = // don't offer "foo" as completion

Change-Id: I8e24245a2bc86a29887360e7f642a4cbb87fa6ca
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212401
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-23 21:16:02 +00:00
Rohan Challa
c7341709c6 internal/lsp: cleanup temporary go.mod file on shutdown
This commit will delete the temporary go.mod file that is attached
to a view when the session is shutdown.

Updates golang/go#31999

Change-Id: I0f6b0663b0a814ce45d9b12468669f415f8c36aa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212479
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-23 19:58:47 +00:00
awh6al
8c5978f193 internal/lsp: make golint happy
This PR fixes internal/lsp/fuzzy/matcher.go:230:4: should replace skipPenalty += 1 with skipPenalty++ .

Change-Id: I7d5b6c20e25503ea266e26783e68ad92fd8b36e0
GitHub-Last-Rev: 36fd2c25232f593f905051692e84d8c634fb7a46
GitHub-Pull-Request: golang/tools#194
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212400
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-23 18:17:04 +00:00
Ian Cottrell
f13409bbeb internal/telemetry: clean up test data
the current implementation likes to sort maps, so we make sure
tag lists are in sorted order already so that a stable encoder
produces the same result

Change-Id: Ia7ce05f35edb636817c354d9df02de753a48fe1d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210216
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2019-12-20 23:47:30 +00:00
Ian Cottrell
c7346ecdc6 internal/telemetry: remove an extraneous comment
There was a fragment of a sentence that must have been from a previous version
(as it talks about a return value for a function that does not have one).

Change-Id: I9d154fe10711344f93e1d49b68a811dbc9772710
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212241
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2019-12-20 23:47:11 +00:00
Ian Cottrell
814139985e internal/telemetry: obey the onlyErrors flag in the log writer
has no impact because there are no use cases that don't set it to true right now

Change-Id: I2bc485226078c710bdc36397b96755cdce82d9cc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212242
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2019-12-20 23:46:55 +00:00
Ian Cottrell
2f6d8bf0ad internal/lsp: change tests to use the main exporter
Now the tests are at a high enough level, we can
switch them to using the full exporter by bulding
a fake http client to bind it to. This lets us
use the true public interface and also excercise
more of the functionality in the tests.
With this we are now ready to replace the entire
implementation safely.

Change-Id: Ifdbf6230de3ec7c7c5381c840b135cb7a0bc1e55
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209161
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2019-12-20 19:55:05 +00:00
Rohan Challa
75f8c4427c internal/lsp: change -modfile flag to tempModfile
Remove double negative issues and rename the disableTempModfile flag
to be tempModfile.

Updates golang/go#31999

Change-Id: Id62aa3707fef6758a1026c864a962f0bed36bc2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212240
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-20 19:10:06 +00:00
Rebecca Stambler
5e752206af internal/lsp: don't clear file contents on save
CL 212037 introduced a bug with saving overlays. Since VS Code sends nil
contents for a file on save, we were deleting overlay contents on save.
This resulted in very strange behavior.

Also rename overlay.data to overlay.text to match variable names.

Fixes golang/go#36224

Change-Id: I7f2d12e369aa7f6daa2c9f36c33468ec6bf61930
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212199
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-12-19 23:08:27 +00:00
Rebecca Stambler
145a1e401f internal/lsp/cache: detach context before invalidation
In one of my previous refactoring changes, I lost the fact that the
context should be detached before invalidating a file's contents. If
this function is canceled, we will be in a bad state.

Also, small change to return ctx.Err() instead of a custom error message
from (*packageHandle).check.

Change-Id: I19e513e09e438feee105fdd89cb7364a0c3c5e7f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212104
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-19 21:23:07 +00:00
Rebecca Stambler
041a08a54a internal/lsp/cache: remove errors from dependencies
Now that `go list` errors are sufficient for us to determine a circular
dependency, we don't need to cache errors on dependency packages.

Change-Id: I0633aeb356f93d21afed3371d61d7eae7de255ac
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212197
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-19 21:17:59 +00:00
Rebecca Stambler
85a3356613 internal/lsp/cache: consolidate function to update overlays
This change merges the small helper functions that modified overlays
into a single function and removes the openFiles sync.Map in the view.

Change-Id: Id94c7d86228c9628b7373fab0030ad0c8018dda5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212037
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-19 21:06:08 +00:00
Heschi Kreinick
62b9674312 internal/imports: consider direct mod deps more relevant
As a followup to CL 204203, prefer direct dependencies over indirect.
This should improve results for common names like "log" and "errors".

Updates golang/go#36077.

Change-Id: I3f8cfa070832c2035aec60c4e583ee1c0abf5085
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212021
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-19 20:57:09 +00:00
Rebecca Stambler
2208e1677e internal/lsp: eliminate source.File type and move GetFile to snapshot
This change eliminates the extra step of calling GetFile on the view and
getting the FileHandle from the snapshot. It also eliminiates the
redundant source.File type. Follow up changes will clean up the file
kind handling, since it still exists on the fileBase type.

Change-Id: I635ab8632821b36e062be5151eaab425a5698f60
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211778
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-19 20:51:25 +00:00
Muir Manders
56b0b28a00 internal/lsp: put verbose go/packages output behind verboseOutput flag
On startup gopls runs go/packages over the entire workspace. The log
message in question outputs each package found along with all the
package's filenames. Obviously in a large project this produces an
incredible amount of output. Fix by putting the log message behind the
"verboseOutput" flag when invoking go/packages in the "dir/..." mode.
I also added the go/packages "query" string to the
once-per-go-packages-call log message so it is more useful.

Change-Id: I651419e34a855325056bca6720eda8671f7d5fa8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210739
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-19 19:20:50 +00:00
Rohan Challa
bdebc07e97 internal/lsp: fix highlighting of inexact matches when highlighting from the right
There is an issue when highlighting a single character identifier if the cursor is on the right of it. This problem
is a result of an assumption made in astutil.PathEnclosingInterval relating to the arguments passed in. Specifically,
if start==end, the 1-char interval following start is used instead. As a result, we might not get an exact match
so we should check the 1-char interval to the left of the passed in position to see if that is an exact match.

Updates golang/go#34496

Change-Id: If689fdf695df6ec1bc1935088e50d3de055bd5db
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212137
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-19 19:05:06 +00:00
Peter Weinberger
a98e7fcfeb internal/lps/protocol: bring code.ts up to date with latest changes.
This CL makes sure that code.ts will generate the latest version
of tsprotocol.go. It has a more succinct way of deciding which fields
need to be pointers.

Change-Id: I6854cb2f096d3707bc3b828a9601f9384638f475
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212140
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-19 18:45:41 +00:00
Emmanuel T Odeke
2ad5dca7a5 telemetry/log: sample reference for benchmarking harness
Serves as a reference harness to get benchmarking started.
Steps to run benchmark:

$ go test -run=^$ -bench=. -count=10

After you grab the output, put the various comparisons
into files before.txt and after.txt then edit those
result names to have a common name e.g.
    s/BenchmarkLoggingNoExporter/BenchmarkIt/g
    s/BenchmarkNoTracingNoMetricsNoLogging/BenchmarkIt/g
    s/BenchmarkLoggingStdlib/BenchmarkIt/g

Now run benchstat:

* All compared
$ benchstat no_log.txt tellog.txt stdlog.txt
name \ time/op    no_log.txt  tellog.txt   stdlog.txt
It-8              289ns ± 2%  2780ns ± 3%  5100ns ± 3%

name \ alloc/op   no_log.txt  tellog.txt   stdlog.txt
It-8              80.0B ± 0%  728.0B ± 0%  568.0B ± 0%

name \ allocs/op  no_log.txt  tellog.txt   stdlog.txt
It-8               5.00 ± 0%   32.00 ± 0%   28.00 ± 0%

* No logging vs telemetry log
$ benchstat no_log.txt tellog.txt
name  old time/op    new time/op    delta
It-8     289ns ± 2%    2780ns ± 3%  +862.31%  (p=0.000 n=10+9)

name  old alloc/op   new alloc/op   delta
It-8     80.0B ± 0%    728.0B ± 0%  +810.00%  (p=0.000 n=10+10)

name  old allocs/op  new allocs/op  delta
It-8      5.00 ± 0%     32.00 ± 0%  +540.00%  (p=0.000 n=10+10)

* No logging vs Standard library "log"
$ benchstat no_log.txt stdlog.txt
name  old time/op    new time/op    delta
It-8     289ns ± 2%    5100ns ± 3%  +1665.16%  (p=0.000 n=10+9)

name  old alloc/op   new alloc/op   delta
It-8     80.0B ± 0%    568.0B ± 0%   +610.00%  (p=0.000 n=10+10)

name  old allocs/op  new allocs/op  delta
It-8      5.00 ± 0%     28.00 ± 0%   +460.00%  (p=0.000 n=10+10)

* telemetry log vs Standard library "log"
$ benchstat tellog.txt stdlog.txt
name  old time/op    new time/op    delta
It-8    2.78µs ± 3%    5.10µs ± 3%  +83.43%  (p=0.000 n=9+9)

name  old alloc/op   new alloc/op   delta
It-8      728B ± 0%      568B ± 0%  -21.98%  (p=0.000 n=10+10)

name  old allocs/op  new allocs/op  delta
It-8      32.0 ± 0%      28.0 ± 0%  -12.50%  (p=0.000 n=10+10)

Change-Id: I53b15e9da315615278c576f3a60108435417a9f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212078
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-12-19 18:19:13 +00:00
Rohan Challa
3aa5a36464 internal/lsp: add gopls setting to disable use of -modfile flag behavior
This CL adds a "disableTempModfile" boolean that can be turned on or off.
While we are adding support for go.mod files in gopls, this flag will allow
users to opt out of using the -modfile flag that is enabled in Go 1.14. This
flag might be removed at a future point, the decision still needs to be made.

Updates golang/go#31999

Change-Id: Ic90229333e988fcc6d461ab1ee47bce1114bd965
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212139
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-19 18:11:24 +00:00
Rohan Challa
4f29fbcc08 go/packages: change import cycle errorkind from UnknownError to ListError
The import cycle not allowed error should be returned as a ListError not
an UnknownError.

Fixes golang/go#35964

Change-Id: Ibc575f92d926ff715c0da67a4fceda05badcc652
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212138
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-19 18:10:03 +00:00
Muir Manders
979b82bfef internal/lsp/cache: fix excessive recursion in (*snapshot).clone()
It wasn't infinite, but gopls would sit at 100% cpu for ~25 seconds
whenever I made a change to a package imported by essentially
everything in my project.

Change-Id: Ifa253a4de06897260e0791888284527258e8de48
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212000
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-19 04:18:53 +00:00
Heschi Kreinick
84f0c7cf60 internal/lsp/cache: don't forget files just because they change
The situation in golang/go#35638 was as follows:

didOpen main.go creates a snapshot that knows main.go is in package
"mod.com".
didChange main.go creates a snapshot. When a file changes, we discard
its contents by leaving the file handle out of the "files" map.
didOpen const.go creates a snapshot, and attempts to invalidate the
metadata for packages in the same directory.

The way we detect packages in the same directory is by iterating through
the files in the snapshot. But we threw away the only file in "mod.com"
in step 2 when its contents changed. If a diagnostics run happened to
get in between the two steps, it would re-load main.go and the bug would
go away. If not, step 3 would find no files and fail to invalidate
"mod.com".

The best way to fix this is to insert the new file handle eagerly during
cloning. That way there's no confusion.

Fixes golang/go#35638.

Change-Id: I340bd28a96ad7b4cc912032065f3c2732c380bb2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211578
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-18 22:55:20 +00:00
Rebecca Stambler
ca0407e66b internal/lsp: return snapshots from text modifications
Eliminate the file watcher, since it led to a lot of confusion and
difficulty reasoning about the flow of a file action. This change splits
a file invalidation into the two logical steps - 1) things that affect
the overlay, and 2) things that affect the view. It is based on top of
CL 211757, so the diffs will look better once that CL is merged.

Change-Id: I277475569b61f3c80feaa6b6fe457b4bace82e35
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-18 22:53:40 +00:00
Rebecca Stambler
41c101f395 internal/lsp/source: fix completion budget type
Change-Id: I43d7b067e8bedc6371c32a2655afb9dc87f71f66
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211759
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
2019-12-18 21:55:16 +00:00
Rebecca Stambler
61483d104a internal/lsp: show comments for grouped variable declarations
Fixes golang/go#36139

Change-Id: I8aaf1a5d65b8d66ea7bb350439cc960c7505307d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211637
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-18 20:39:36 +00:00
Rebecca Stambler
d270ebf96e internal/lsp/cache: move overlay and debug handling into separate files
This change has no code modifications. Just move the handling for
overlays and debugging into separate files to make them easier to find.
Also, add some missing copyrights.

Change-Id: I7256f704c017457fa3418818d03f89f061af6fc9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211757
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-18 19:17:43 +00:00
Heschi Kreinick
bc4a8d3946 internal/lsp/cache: don't invalidate dependents' metadata
Rerun of CL 210458. Only invalidate metadata for packages directly
involving the changed file.

Change-Id: Id28647851254a9bdcb3dbe7a762194bb025da913
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211779
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-18 18:41:16 +00:00
Billie Cleek
6f9e13bbec internal/lsp/debug: print the debug port
Print the debug port to stderr when the debug server listens on a
dynamic port so that clients can determine which port to use when
launching a browser to the debug view.

Change-Id: I92f5e334df5cefdf54f7242ac2328b026852c70e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211798
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-12-18 04:04:34 +00:00
Rohan Challa
62a9628863 internal/lsp: use the -modfile flag to update a different go.mod file
In the upcoming Go 1.14 release, there is an introduction of the -modfile
flag which allows a user to run a go command but choose where to direct the
go.mod file updates. The information about this can be found here: golang/go#34506.

This change starts setting up the infrastructure to handle the seperate modfile
rather than keep changing a user's go.mod file. To support versions of Go that are
not 1.14, we run a modified "go list" command that checks the release tags to see
if 1.14 is contained.

Updates golang/go#31999

Change-Id: Icb71b6402ec4fa07e5f6f1a63954c25520e860b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211538
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-17 22:15:16 +00:00
Rebecca Stambler
38570b7665 internal/lsp: fix links for interface methods
This change handles fixes the link behavior for interface methods.
For example, before this change, hovering on "Name"  would point to an
incorrect link: https://pkg.go.dev/go/types?tab=doc#object.Name.
The correct link is
https://pkg.go.dev/go/types?tab=doc#TypeName.Name.

var typ *types.Named
typ.Obj().Name()

Change-Id: If28bff6069239d487e5d86cacafc20800493ebe8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211585
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-17 19:37:44 +00:00
Muir Manders
640059499b internal/lsp: kill some dead code
Clear out a few things I noticed aren't really used anymore.

Change-Id: I03f955015632197b56230ae0443cfb3871b54db2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211717
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2019-12-17 19:30:50 +00:00
Rebecca Stambler
f2a421a9e5 internal/lsp: change completionBudget to milliseconds
Change-Id: Ic12f6325bc8307056481edff61da06cfc4f232b3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211677
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2019-12-17 18:37:38 +00:00
Bryan C. Mills
01c78d57fd internal/imports: set the Dir field on the build.Context (instead of WorkingDir) if present
Updates golang/go#36168

Change-Id: Ibdb277176a28da72d85a4c7c8ed7c903c278125e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211599
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Reviewed-by: Jay Conrod <jayconrod@google.com>
2019-12-17 14:41:53 +00:00
Rebecca Stambler
42268a1f04 internal/lsp: fix link anchors for struct fields
This change fixes the link anchors for fields within a struct or
composite literal by getting the enclosing types.Type.

Fixes golang/go#36138

Change-Id: I534a900fad6fa6fa1b1acaa5a63ca264c5d34c39
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211582
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2019-12-17 02:48:38 +00:00
Rebecca Stambler
c39ce2148d internal/lsp: expose option to disable timeouts for completion
This is useful for integration testing.

Fixes golang/go#36142

Change-Id: I175510df19f384a0a027267337925ebae15ef827
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2019-12-17 01:14:48 +00:00
Heschi Kreinick
621d4eef75 imports: pass more of the environment
goimports now wants various module flags, but I forgot to set them up in
the many places we create environments. Do so.

Change-Id: Ic3817caeb8fc4d564b49006ef6ca6842b2498eaf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211581
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2019-12-17 00:36:01 +00:00
Heschi Kreinick
846828e8ce internal/lsp/source: fix crash on conflict markers in imports
Generally speaking, if the imports package can operate on a file, we can
assume that it's in good enough shape for the rest of our work. That
means it's important we run imports first. On one code path, we weren't.

Fixes golang/go#36162.

Change-Id: I750aff31e0c3706aeb798ceb60c35ea17ba95943
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2019-12-16 23:08:29 +00:00
Rebecca Stambler
1d943b0903 internal/lsp: change CompletionItem.{Command,TextEdit} to pointers
This is a continuation of the discussion on
https://github.com/microsoft/vscode-go/issues/2920. Add corresponding
checks to internal/lsp/cmd/capabilities_test.go.

Change-Id: I51af05dee9e7ecea0e40733dd4c5ca3dfb8f4dd8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209859
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2019-12-16 22:14:42 +00:00
Heschi Kreinick
4981f6b3ad internal/lsp/cache: consolidate snapshot cloning
Cloning is complicated enough without worrying about concurrency, so
hold the snapshot's lock during the entire process.

Consolidate everything into one function. I don't think that the split
was making it easier to understand, and I was able to see and clean up
some extra complexity once it was all in one place. Let's discuss
options if you think the result is too long.

I don't intend any semantic changes in this CL.

Updates golang/go#35638.

Change-Id: I05c4b28875976293f5fcd56248d9c9e468f85cc6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211537
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2019-12-16 21:51:44 +00:00
Arda Güçlü
99b39703f4 internal/gopathwalk/walk: add missing function descriptions and renaming
Missing function descriptions are added. init is renamed setIgnoredDirs.

Change-Id: I56b5a7c3e4fcc27991b33aef16d506948ce4b36b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208358
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-12-16 21:45:07 +00:00
Muir Manders
a6aac22fcd internal/lsp: fix find-implementation for promoted methods
We weren't returning promoted methods as implementations when the
promoted method was defined in a different package than the type
implementing the interface.

Fix by properly mapping the implementer types.Object to its containing
source.Package.

I generalized the implementations() result to just contain the
implementer objects and their containing package. This allowed me to
get rid of some result prep code in Implementation().

Fixes golang/go#35972.

Change-Id: I867f2114c34e2ad39515ee3c8b6354c1cd35f7af
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210280
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2019-12-16 21:36:29 +00:00
Jędrzej Szczepaniak
a0e659d513 internal/lsp, internal/tool: clean up command line of gopls
Descriptions of certain commands were changed to not start with capital
letter.

All of the commands were splitted into so called main
commands and feature commands.

Package tool did have a limitation that revealed itself when command
was invoked only with `-h`, i.e. `gopls -h`. Limitation was that in
above mentioned case, FlagSet.Parse() was intercepting `-h` flag and
printing just default usage.

Updates golang/go#35855

Change-Id: I9bd27fc72e8fb8d18025d95ebcae974dd5583e91
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210359
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2019-12-16 17:36:52 +00:00
Muir Manders
49a3e744a4 internal/lsp: remove useless signature cast completion candidate
In a previous change I inadvertently added completion candidates like:

var f func(int)
f = <> // useless candidate "func(int)(<>)"

Ignoring the fact it is a syntax error without more parens around the
signature, it isn't a useful candidate because you don't need to cast
when assigning a named signature type to an unnamed type.

Change-Id: Ic261817af344ee47193240a11dca5d3a32cbd293
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211319
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2019-12-16 05:27:35 +00:00
Rohan Challa
04c2e8eff9 internal/lsp: skip return highlighting if cursor is in arglist of func
If the cursor is within an argument that is within a callExpr which is
in a return statement, we only want it to highlight the ident that the cursor
is in. We do not want it to highlight the entire function.

Updates golang/go#34496

Change-Id: If4025660a99fd5df90098e0560a5e9e7260e33c8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211338
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2019-12-13 22:12:58 +00:00
Rohan Challa
56463cc14b internal/lsp: create parseModHandle for storing go.mod data
Created an analogous data structure for go.mod files when we parse them
using the golang.org/x/mod package. Gopls can now access the data
within a go.mod file using a parseModHandle and the corresponding
parseModData object. This will help down the road when it is time
to implement the lsp functions for go.mod files.

Updates golang/go#31999

Change-Id: Ibd4d64569bbe3df61b203490b63399d479e7d794
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211303
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2019-12-13 22:03:54 +00:00
Rohan Challa
7ebc6af015 internal/lsp: add diagnostic on import causing import cycle
After the addition of golang/go#35964, the import cycle error now
has the import stack attached in the message. This CL parses that
stack and attached the import cycle diagnostic to the import versus
just adding it to the first character of the .go file.

Fixes golang/go#33085

Change-Id: I6f5f067c338879b898829951236f816aa63d9dfa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210942
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2019-12-13 19:54:01 +00:00
Rebecca Stambler
74e303f875 internal/lsp/source: fix error message for multiple GOPATHs
The current handling of error messages did not address the case that a
user may have multiple directories listed in their GOPATH.

Fixes golang/go#36120

Change-Id: I8e68a45d3dd902975a0ccf4177ec2698accdf69d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211304
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2019-12-13 19:21:09 +00:00
Iskander Sharipov
27b81bef4a internal/lsp/tests: add error handling for @item()
If there are less than 3 args for @item, it does an early
return without recording it for a given pos.
This leads to a panic when tests runner can't lookup
a non-nil item for a pos.

Since other collect* methods seem to use t.Fatal for error
handling, do the same in collectCompletionItems().

Change-Id: I21960731f532b93029e6e06800e0484dc7d599df
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211257
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2019-12-13 18:39:29 +00:00
Muir Manders
0f69de236b internal/lsp: offer basic type conversion candidates
When the expected type is a basic type, we will now offer a
corresponding type conversion candidate. For example:

var foo int64
foo = // offer "int64(<>)" as a candidate

The type conversion candidate will be ranked below matching concrete
candidates but above the sea of non-matching candidates.

This change broke almost every completion test. I added a new
completion option for literal candidates so tests can selectively ask
for literal completions.

Updates golang/go#36015.

Change-Id: I63fbdb33436d662a666c1ffd3b2d918d840dccc7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210288
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2019-12-12 22:41:01 +00:00
Rebecca Stambler
cfcbc7796e internal/lsp: improve link in documentation on hover
This change refactors some of the logic that builds a link anchor for
a given symbol, pushing the actual Link into the HoverInformation struct.
This is necessary because type information is needed to build up that
link in certain cases, like methods.

The last step will be to correctly display struct fields.

Updates golang/go#34240
Fixes golang/go#36031

Change-Id: I7f989faddbaa07f91838a870b4477bf78ce8ddf7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210201
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2019-12-12 22:39:21 +00:00
Muir Manders
825cb06263 internal/lsp: downrank "nil" completion candidate
Having nil ranked normally causes it to show up as the top candidate
in cases like:

context.WithCancel(<>) // "nil" shows up before "context.Background()"

"context.Background()" gets a slight score penalty since it is a deep
completion, so "nil" is ranked highest.

Sometimes you do want "nil", but it's such a short identifier you
probably aren't leaning too heavily on autocompletion. I think it
makes sense to optimize for the case when you want something non-nil.

Change-Id: I537927db2b573535e751380c4cba5c9873dfe524
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210539
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2019-12-12 05:12:00 +00:00
Rebecca Stambler
56eb7d2c19 internal/lsp: don't resend diagnostics if they are unchanged
Cache delivered diagnostics on the server so that we can determine if
they should be resent. To be careful about this, we only reuse cached
diagnostics if they are for a greater version, or if we don't know
the file's version and it is unchanged.

Fixes golang/go#32443

Change-Id: I4ba22d85e5b21a8ad6cc62f74cd83c07d3c220cf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208261
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2019-12-12 04:27:51 +00:00
Rebecca Stambler
4403f79810 internal/lsp: move DidModifyFile into internal/lsp/cache
This change is the next step in unification of text synchronization
methods. The logic really belongs in the internal/lsp/cache package
rather than the internal/lsp package.

Pulled out a function to run diagnostics on a file (diagnostics are still
run async).

Change-Id: I5e237411a02af210ad386b37a6c2aa62ef723567
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210784
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-12 03:49:59 +00:00
Muir Manders
dfebd2802a internal/lsp: fix find-references to search from all package variants
We previously searched the reverse dependencies of the "widest"
package that contained out starting identifier, but if our package has
tests then the widest package is the ".test" variant, and it has no
reverse dependencies. Fix by searching through all of the packages
that contain our starting identifier.

For example:

-- foo/foo.go --
package foo
func Foo() {}

-- foo/foo_test.go --
package foo
func TestFoo(t *testing.T) {}

-- bar/bar.go --
import "foo"
func _() {
  foo.Foo()
}

We would start searching from the foo.test variant, but we wouldn't
search package bar at all because bar does not import foo.test, it
imports plain foo. Now we search from both foo and foo.test (you still
need search foo.test to find references within foo_test.go).

Fixes golang/go#35936.

Change-Id: I5fd2f7bb130a421ed6fad92da11179995c99a2cf
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2019-12-11 23:36:49 +00:00
Rohan Challa
ad473c03aa internal/lsp: add handling for go.mod files in internal/lsp functions
When we are processing a go.mod file, we are calling go/packages.load
when we should not be. It will always return 0 packages since it is
not a .go file. This CL adds branching inside each internal/lsp protocol
function and also adds a check in snapshot.PackageHandles for the file type
and returns an error. This will prevent `go list` from running on go.mod files for now.

Updates golang/go#31999

Change-Id: Ic6d0e9b7c81e1f404342b98e10b9c5387adde2ee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210757
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2019-12-11 23:24:34 +00:00
Muir Manders
4da4485a1c internal/lsp: invalidate metadata and type info more selectively
Say you have foo.go and foo_test.go yielding packages "foo" and
"foo.test". Previously when you changed foo_test.go we would
invalidate the foo.test and foo packages. Invalidating foo is not
necessary since it does not depend on any test files. Furthermore, it
caused problems because nothing would refetch foo's metadata until
foo.go changed, so various things (such as finding implementations in
packages that depend on "foo") would be broken.

Now we only invalidate metadata from packages that contain the
modified file. We only invalidate type info from packages that contain
the modified file, or from such packages' transitive reverse
dependencies.

Change-Id: I23d1af91bcdf22fad4faa1b048afe17ef4e403a1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210460
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2019-12-11 23:14:03 +00:00
Iskander Sharipov
ec14b29651 internal/lsp/source: fix all types in resolveInvalid
This CL teaches lsp to report `**T` instead of `**invalid type`,
`func (badParam) badResult` instead of `func (invalid type) invalid type`, etc.

To do that, we need to detect "invalid type" inside any part of a type.
I've added typeIsValid() function for that.

To simplify type formating code in resolveInvalid(), formatNode
function is added that can also format *ast.StarExpr (of any depth).
Since we already used AST printer in the same file, I
added formatNode function that is now used in both places.
While at it, replaced bytes.Buffer to strings.Builder there.

Change-Id: I3bb84c58c417b175cceefb410e238c48425f7cee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210357
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2019-12-11 23:00:51 +00:00
Rohan Challa
ac2db28e81 internal/lsp: invalidate workspace packages when go.mod file changes
When the go.mod file changes, we should invalidate all the files that are
contained in the package for the mod file. This will allow the files to recheck
their packages in case new packages were added in the go.mod file.
This still does not fix issue where changes to go.mod files do not trigger recalculation of diagnostics.

Updates golang/go#31999

Change-Id: I6d8f1531f5c28ed2dca7fb8ad4ee0317fada787b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210557
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2019-12-11 22:23:25 +00:00
Muir Manders
a27fdba277 internal/lsp: check all package variants in find-implementations
We previously only searched for implementations of the object we found
in the "widest" package variant. We instead need to search all
variants because each variant is type checked separately, and
implementations can be located in packages associated with different
variants.

For example, say you have:

-- foo/foo.go --
package foo
type Foo int
type Fooer interface { Foo() Foo }

-- foo/foo_test.go --
package foo
func TestFoo(t *testing.T) {}

-- bar/bar.go --
package bar
import "foo"
type impl struct {}
func (impl) Foo() foo.Foo { return 0 }

When you run find-implementations on the Fooer interface, we
previously would start from the (widest) foo.test's Fooer named
type. Unfortunately bar imports foo, not foo.test, so bar.impl
does not implement foo.test.Fooer. The specific reason is that
bar.impl.Foo returns foo.Foo, whereas foo.test.Fooer.Foo returns
foo.test.Foo, which are distinct *types.Named objects.

Starting our search instead from foo.Fooer resolves this issue.
However, we also need to search from foo.test.Fooer so we match any
implementations in foo_test.go.

Change-Id: I0b0039c98925410751c8f643c8ebd185340e409f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210459
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2019-12-11 21:44:05 +00:00
Rohan Challa
3785370768 internal/lsp: fix circular import errors to account for import stack
Hotfix for broken tests after the import stack got added to the circular import
error statement.

Change-Id: I0179b9590cad38cf9cb903f9932d9bf8fb8dc6df
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210939
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2019-12-11 19:05:55 +00:00
Muir Manders
912f50adde internal/lsp: don't invalidate dependents' metadata
When a file is changed, we invalidate various cached data so we
re-type check and refetch metadata as needed. Previously when a file
changed we would delete the metadata for all transitive reverse
dependencies. This broke all-packages-in-workspace features since we
could no longer fetch the package handle for packages without
metadata.

Fix by only deleting metadata for the packages that the file being
changed belongs to. It doesn't seem like a package's metadata contains
anything that is sensitive to changes in the package's dependencies.

Change-Id: I6a2d5df49ecd4d627b37689e48ed48fe78ce658d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210458
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2019-12-11 18:25:29 +00:00
Clint J Edwards
98df123772 internal/lsp: add comment completions for exported vars
This should provide simple name completions for comments
above exported variables.

Can be activated with `ctrl+space` within a comment.

Pretty new, so all help is welcome.

Fixes #34010

Change-Id: I1c8f71baa3beaa22ec5fd9fd4a531284a8d125f3
GitHub-Last-Rev: a9868eb69dc587cb4579268b2c3ae46932702641
GitHub-Pull-Request: golang/tools#166
Reviewed-on: https://go-review.googlesource.com/c/tools/+/197879
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-10 22:11:41 +00:00
Iskander Sharipov
fe93f4a7d4 internal/lsp: suggest "fallthrough" only inside switches
Change-Id: I3a6ddbc12e068da151699a1d0377670695dcf5aa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210358
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2019-12-10 22:10:49 +00:00
Peter Weinberger
1bcf67c9cb internal/lsp: Make Text in DidSave at *string rather than a string
Fix code.ts to match CL 210780.

Change-Id: Iaaa1f8b78d483e4281e6d513cf4d20ae44e46cb7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210783
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-10 20:07:04 +00:00
Rebecca Stambler
0bd90eac95 internal/lsp: make Text in DidSave request a pointer
Fixes golang/go#36063

Change-Id: I223ead138111239ae1894f5565414ac384c016e2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210780
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2019-12-10 19:28:57 +00:00
Heschi Kreinick
22774f7dae internal/lsp/cache: invalidate metadata even without Create
When a new file is opened, the first time we learn about it will be a
didOpen event. We need to invalidate the package's metadata in that
case too.

Fixes golang/go#35638.

Change-Id: I36c6171e9c959c48ede9e125679e8dd1be7609f4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210559
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-09 22:52:34 +00:00
Rohan Challa
115af5e89b internal/lsp: fix control flow highlighting taking precedence
The control flow highlighting is taking precedence when
you are highlighting a key:value expression within the return statement.
Expected behavior is to just highlight all instances of the key or value and ignore
the control flow statement when inside the scope.

Fixes golang/go#36057

Change-Id: If4b254151c38d152f337833c55a456f8dce18be7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210558
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-09 20:59:57 +00:00
Muir Manders
9a30a9a96c internal/lsp: trim down implementations code
Remove the unused code that was tracking concrete-type =>
interface-type mappings. It isn't clear if there is a good spot for
this in LSP.

I also made it skip interface types when looking for implementations.
It doesn't seem useful to be shown other interface types/methods when
you are looking for implementations of a given interface type/method.

Change-Id: Ib59fb717e5c1a181cc713581a22e60ed654b918c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210279
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-09 20:39:02 +00:00