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Commit Graph

1040 Commits

Author SHA1 Message Date
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Muir Manders <muir@mnd.rs>
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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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/214260
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-01-10 14:27:00 +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
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
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
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
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-30 21:10:22 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-27 05:39:25 +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
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
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
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
Run-TryBot: Muir Manders <muir@mnd.rs>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
2019-12-17 18:37:38 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211584
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-12-17 01:14:48 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211580
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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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Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-16 21:51:44 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
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
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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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
Run-TryBot: Iskander Sharipov <quasilyte@gmail.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210537
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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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TryBot-Result: Gobot Gobot <gobot@golang.org>
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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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
Run-TryBot: Muir Manders <muir@mnd.rs>
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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
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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
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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
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Run-TryBot: Rohan Challa <rohan@golang.org>
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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
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2019-12-09 20:39:02 +00:00
Muir Manders
259af5ff87 internal/lsp: tweak implementation tests
- Add test count to golden file so test count gets checked.
- Make @implementation note take a list of marks similar to completion
  tests.
- Get rid of unnecessary intermediate test data type.

Change-Id: I741eb14b77b0b8ed08e86c634ed39457116e8718
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210278
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2019-12-06 20:40:35 +00:00
Rebecca Stambler
bc369361f3 internal/lsp: fix error suppression in (*session).createView
I had mistakenly forgotten to return a snapshot along with the view.

Fixes golang/go#36020

Change-Id: I1fc802b8924fccec1d6aaa110640eaed490c3aa1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210215
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2019-12-06 20:33:56 +00:00
Heschi Kreinick
6d582d504c internal/lsp/source: optimize computeFixEdits
In the common case that a file has imports, we're going to diff just the
import block. That means that ApplyFixes doesn't need to produce the
whole formatted file, which is a huge speedup. We will do more work twice
for files with no imports, but those are presumably pretty short.

Hat tip to Muir for pointing towards this in
https://go-review.googlesource.com/c/tools/+/209579/2/internal/imports/imports.go#87
even if I didn't catch it.

Updates golang/go#36001.

Change-Id: Ibbeb4d88c6505eac26a36994de514813606c8c79
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210200
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2019-12-06 20:21:26 +00:00
Heschi Kreinick
330b9f1384 internal/lsp/source: cap number of unimported completions
Building unimported completions requires re-parsing and formatting at least
some of the file for each one, which adds up. Limit it to 20; I expect
people will just type more rather than scroll through a giant list.

Updates golang/go#36001.

Change-Id: Ib41232b91c327d4b824e6176e30306abf356f5b4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210198
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2019-12-06 20:21:18 +00:00
Rebecca Stambler
786dcba013 internal/lsp: respect References.IncludeDeclaration setting
Previously, (*IdentifierInfo).References was returning the declaration
of the identifier among the reference results. This change alters the
behavior of this function to only ever return non-declaration
references. Declarations can be accessed through the
IdentifierInfo.Declaration field.

Fixes golang/go#36007

Change-Id: I91d82b7e6d0d51a2468d3df67f666834d2905250
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210238
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2019-12-06 20:05:57 +00:00
Rohan Challa
cec958058c internal/lsp: add error handling for self imports
This change will provide a more useful error when you
are self importing a package. It has TODOs in place to propagate the
"import cycle not allowed" error from go list to the user.

Updates golang/go#33085

Change-Id: Ia868a7c688b0f0a7a9689cfda5ea8cea8ae1faff
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209857
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2019-12-06 19:13:54 +00:00
Rebecca Stambler
db903f390e internal/lsp: fix concurrent map write in file invalidation
The invalidateContent function does not acquire a snapshot's mutex to
avoid blocking other work (even though it probably should since it's
only called after a context is canceled). A case was added to iterate
through files when a file is created, and it did not respect the fact
that the snapshot's mutex was not locked, resulting in a concurrent map
read and write. This change makes sure that the access of the snapshot's
files map is guarded by a mutex.

As a follow-up, we should just acquire snapshot.mu in invalidateContent.

Updates golang/go#36006

Change-Id: Idd904ae582055ce786062df50875ac7f0896fd1c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210199
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2019-12-06 18:53:04 +00:00
Rebecca Stambler
3393d29bb9 internal/lsp: propagate and handle context cancellation errors
We don't distinguish between genuine errors and context cancellation in
diagnostics, which often results in superfluous logging of these errors.
Avoid spamming the logs with them by checking.

Also, remove the logic for sending undelivered diagnostics. It's a relic
of old bugs and isn't useful.

Change-Id: I7df226539b9b1eb49ab3aae8d7b0a67f59fb3058
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210197
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2019-12-05 22:50:56 +00:00
Heschi Kreinick
7b8c8591a9 internal/lsp/cache: clean up dead code after CL 209737
Apparently I should've had staticcheck on. We were only reading the
metadata in updateMetadata to calculate unused imports, but that's now
at a higher level.

Change-Id: Id3d54fa736062bbbf1c207b8739e87ed5a90293d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210078
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-05 21:55:04 +00:00
Heschi Kreinick
addffd168b internal/lsp: fix golden generation for import tests
A long time ago I only fixed golden generation for lsp/source. Get lsp/
and lsp/cmd too.

We have import tests that aren't formatted correctly, so we can't use
goimports to generate goldens. Just trust got.

Change-Id: If924503c0c0f6c60cd31fce194a8c1216001035b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209981
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-05 21:54:53 +00:00
Barnaby Keene
69111344d4 internal/lsp: expose godoc or pkg.go.dev link on hover
This adds a link to documentation to the hover contents for the
current symbol if it is exported.

Updates golang/go#34240

Change-Id: I19c66e91e46f79284bfd0006c53f518eda4edef7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/200604
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 20:53:10 +00:00
Rebecca Stambler
d1f10d1c4e internal/lsp: refactor and clean up text synchronization
This change is the first step in reorganizing the logical flow of file
changes in the internal/lsp package. A new function,
(*server).didModifyFile does the bulk of the work, but we will be able
to push most of its details into the cache layer in a follow-up.

Also, some refactoring of the applyChanges function to flow more
logically. It was unnecessarily convoluted.

Change-Id: Icc1b8642a4cb04d309338b0f8840fe58133d3df1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209979
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 13:33:40 +00:00
Rebecca Stambler
a588733072 internal/lsp: return snapshot when creating a view
Previously, we returned CheckPackageHandles when creating a new view.
Now, return the view's snapshot. Also, add a WorkspacePackageIDs
function in order to run diagnostics on them.

Fixes golang/go#35548

Change-Id: Ica7e41f5a7aa3ee9413feb4de4ee16e1825db2e1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209418
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 13:33:17 +00:00
Muir Manders
73c7173a9f internal/lsp: fix AST bookkeeping as we repair nodes
We weren't maintaining our ancestor node list correctly. This caused
us to fail to make AST repairs in certain cases. Now we are careful to
always append to the ancestors list when recursing.

Updates golang/go#34332.

Change-Id: I9b51ec70572170d9f592060d264c98b1f9720fb8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209966
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-05 06:08:18 +00:00
zikaeroh
e84277c2c0 internal/lsp/cmd: use x/tools/gopls as the gopls bug prefix
"x/tools/gopls" appears to be the currently used prefix for gopls
issues. Make "gopls bug" use this prefix instead of just "gopls" to
avoid needing to edit titles before/after submitting.

Change-Id: I7244aa5539332cc361870f49ae4f27b2a2441571
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209964
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-05 01:26:23 +00:00
Rebecca Stambler
7a2a8a0471 internal/lsp: propagate errors through source.DocumentSymbols
We had previously been ignoring many errors in
textDocument/documentSymbols, which led to errors appearing in the VS
Code extension logs (see
https://github.com/microsoft/vscode-go/issues/2919 for more context). We
should return errors so that we can more easily debug these issues in
gopls directly.

Change-Id: Ieef7c9f0bc8296f7e12d8c84e60d8b978d311651
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209858
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 01:21:29 +00:00
Rebecca Stambler
ac417207ef internal/lsp: run packages.Load only if imports are added or changed
Previously, we would reload if a user's import list decreased or simply
changed order. This is not necessary. Now, we only re-run if a new import
needs to be loaded.

Updates golang/go#35388

Change-Id: I47874afe773dddb835ac27b18895e7a082950dc7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209057
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 01:20:12 +00:00
Muir Manders
d79e56da46 internal/lsp: always ParseFull in-workspace dependencies
When searching for implementations we look at all packages in the
workspace. We do a full parse since we need to look for non-exported
types and look in functions for type declarations. However, we always
type check a package's dependencies in export-only mode to save work.
This leads to what I call the "two world" syndrome where you have both
the export-only and full-parse versions of a package in play at once.
This is problematic because mirror objects in each version do not
compare equal.

For example:

-- a/a.go --
package a

type Breed int
const Mutt Breed = 0

type Dog interface{ Breed() Breed }

-- b/b.go --
package b

import "a"

type dog struct{}
func (dog) Breed() a.Breed { return a.Mutt }

---

In this situation, the problem is "b" loads its dependency "a" in
export only mode so it gets one version of the "a.Breed" type. The
user opens package "a" directly so it gets fully type checked and has
a second version of "a.Breed". The user searches for "a.Dog"
implementations, but "b.dog" does not implement the fully-loaded
"a.Dog" because it returns the export-only version of the "a.Breed"
type.

Fix it by always loading in-workspace dependencies in full parse mode.
We need to load them in full parse mode anyway if the user does find
references or find implementations.

In writing a test I fixed an incorrect import in the testdata. This
uncovered an unrelated bug which made a different implementation test
very flaky. I disabled it for now since I couldn't see a fix simple
enough to slip into this commit.

Fixes golang/go#35857.

Change-Id: I01509f57d54d593e62c895c7ecb93eb5f780bec7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209759
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-04 21:49:57 +00:00
Heschi Kreinick
660eba4da3 internal/lsp/source: extract helper, improve error messages
Lack of context in error messages is making my life difficult. Add
context to a few, refactoring out some duplicate code along the way.

Change-Id: I3a940b12ec7c82b1ae1fc477694a2b8b45f6ff71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209860
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-04 19:34:30 +00:00
Heschi Kreinick
9611592c72 internal/lsp/cache: fix load race, refactor
As far as I can tell, the code I removed in from load did roughly
nothing -- returning nil metadata didn't suppress type checking as I
think was intended. Throwing away the metadata also created the race in

Pull the check for missing import changes up to PackageHandles, where it
is non-racy and can cause type checking to be skipped. Simplify and
refactor.

Fixes golang/go#35951.

Change-Id: Id4b32b86569afb36863aaf982616b2b3727b0e83
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209737
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-04 01:13:08 +00:00