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Commit Graph

694 Commits

Author SHA1 Message Date
Rebecca Stambler
47c907e258 internal/lsp: use a new temporary go.mod for every go list call
Refactor internal/lsp/cache to use a new temporary go.mod file for each
go command invocation. This cleans up the abstraction in the source
package, as we no longer are aware of temporary go.mod files.

This will also fix the raciness of reusing the same temporary go.mod
file for each invocation.

Updates golang/go#37318.
Fixes golang/go#39504.

Change-Id: I90bc17a678b5df222ab598c8f7dbf6c6fdd393f6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237517
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-18 02:37:23 +00:00
Pontus Leitzler
dc31b401ab internal/lsp/source: avoid panic in rename check
In a case where the type info for an ast.CompositeLit isn't found in
forEachLexicalRef(...) gopls will panic.

e.g. trying to rename "foo" where it is declared in this case:
func fn() {
	var foo bool
	make(map[string]bool
	if foo {
	}
}

Note the missing ')' after make.

This change will skip ast.CompositeLits if the type can't be found, and
that fixes the panic. But it also do rename the identifier as long as it
is possible, and I'm not convinced that we should allow rename at all if
the source can't be compiled.

Updates golang/go#39614

Change-Id: Ibb50b15ce4b31056f2f1da52a4dcab7b8b91a320
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238042
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2020-06-16 19:50:46 +00:00
Rebecca Stambler
6aa8f57aac internal/lsp: un-export (*snapshot).Config to limit it to cache
Limiting the Config to the view seems reasonable, considering that it is
only used to run the `go` command. I prefer just having the cache run
go commands, so that source doesn't have to deal with the environment.

This also enables CL 237517.

Change-Id: I639c082592de30e9682dc25cdd12c7751ddb4f97
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237600
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-15 22:28:25 +00:00
Rebecca Stambler
e31b568ad1 internal/lsp: plumb fillstruct through analysis
Now that fillstruct is an analyzer, we can simplify the code that calls
it in code_action.go. We introduce a new class of analyzer --
convenience analyzers, which are closer to commands. These represent
suggestions that won't necessarily improve the quality or correctness of
your code, but they offer small helper functions for the user.

This CL also combines the refactor rewrite tests with the suggested fix
tests, since they are effectively the same.

For now, we only support convenience analyzers when a code action was
requested on the same line as the fix. I'm not sure how to otherwise
handle this without bothering the user with unnecessary diagnostics.

Change-Id: I7f0aa198b5ee9964a907d709bae6380093d4ef21
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237687
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-15 21:22:08 +00:00
Heschi Kreinick
1725ffee6d internal/lsp/cache: hide diagnostics for ignored dirs
The go command ignores go files in specially-named directories like
testdata. We probably still want to try to offer services like
autocomplete and jump-to-definition there, but diagnostics are less
likely to be helpful. As a compromise, just squash diagnostics.

Note that the rules we use are slightly wrong; see the comment on
ignoreFiles for details.

Fixes golang/go#39563.

Change-Id: I0bc00639e68bd71ea55d867af36e07ef4ec780a1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237638
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-15 17:27:23 +00:00
Josh Baum
a1e2396bbd internal/lsp: port fill struct into analysis framework
The current implementation of the fill struct tool is not a part of
the analysis framework. This commit moves the functionality from the
source directory to the analysis directory.

Change-Id: Ibe37b57f3e6680c8729932dbbe010a4642600e4a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237258
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-12 20:33:59 +00:00
Rebecca Stambler
3c1b287bbd internal/lsp: await the initial workspace load in ModHandle
ModHandle races with the initial workspace load if the go.mod file does
not yet exist. We should await for the initial workspace load to
complete before proceeding with update codelenses, etc.

Part of trying to figure out the flakes in golang/go#39504.
Also a few staticcheck fixes, and fix the Windows line endings in
fill_struct.go, because `git gofmt` complains.

Change-Id: Ide21a47137390792d1afb924740cff0bb6f0b764
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237419
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-12 18:21:55 +00:00
Rebecca Stambler
9001f16f58 internal/lsp: cancel the initial workspace load when view shuts down
The error messages from view cancellation clutter up the logs when
testing, especially if you're running a single subtest.

A few quick staticcheck fixes in the CL also.

Change-Id: Ia1ed5360ac754023c589ed526ec0ed3e94a79b2f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237637
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-12 18:06:40 +00:00
Heschi Kreinick
f520afa52e internal/lsp: remove Ignore feature
Ignore ignored the builtin package and files that start with _. The
latter should already be ignored by "go list". The former seems
like too much effort to me. People shouldn't edit random parts of the
stdlib, and ignoring changes to (e.g.) the Error interface seems like
the least of the trouble they can get themselves into.

Remove it for now. If we get complains I'll re-add it, probably by
rejecting the write entirely somewhere.

We incidentally relied on this in the identifier functions; change those
to treat the builtin package slightly more specially.

Change-Id: I005b02a66b1a987c50a3074d53a2d28ff07d3324
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237597
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:55:14 +00:00
Heschi Kreinick
ecd3fc4348 internal/lsp: read files eagerly
We use file identities pervasively throughout gopls. Prior to this
change, the identity is the modification date of an unopened file, or
the hash of an opened file. That means that opening a file changes its
identity, which causes unnecessary churn in the cache.

Unfortunately, there isn't an easy way to fix this. Changing the
cache key to something else, such as the modification time, means that
we won't unify cache entries if a change is made and then undone. The
approach here is to read files eagerly in GetFile, so that we know their
hashes immediately. That resolves the churn, but means that we do a ton
of file IO at startup.

Incidental changes:

Remove the FileSystem interface; there was only one implementation and
it added a fair amount of cruft. We have many other places that assume
os.Stat and such work.

Add direct accessors to FileHandle for URI, Kind, and Version. Most uses
of (FileHandle).Identity were for stuff that we derive solely from the
URI, and this helped me disentangle them. It is a *ton* of churn,
though. I can revert it if you want.

Change-Id: Ia2133bc527f71daf81c9d674951726a232ca5bc9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237037
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:11:59 +00:00
Heschi Kreinick
1fdcbd1300 internal/lsp/source: format fill_struct.go
Change-Id: Iaf238dfba6f51aed0a15f6ef2b231e1a1816f683
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237421
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 03:21:20 +00:00
Pontus Leitzler
8d7dbee4c8 internal/lsp/source: support labeled statements when highlighting loops
When document.Highlight is called with the cursor on a loop statement or
branch statement, gopls doesn't look for labels. Placing the cursor at
the break statement below highlights the inner for loop:

Outer:
for {
    for {
        break Outer
    }
}

By making highlight label aware, and ensure that unlabeled "break" in
"switch"/"select" doesn't highlight the outer loop, this change fixes
loop highlighting.

Adding support for highlight of "switch" and "select" will be handled in
a separate CL.

Updates golang/go#39275

Change-Id: I7014aa7b0dfb1da871863ced611623be995f3944
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236524
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-10 05:20:24 +00:00
Ian Cottrell
ce53dc4445 internal/lsp: clean out the debug handling
This removes all the cache/session/view hooks from the lsp and instead
uses normal introspection from the client to find all the entities
rather than keeping shadow copies of the object graph in the debug page
handler.
This required the addition only of the ability to view the sessions open
on a cache and exposing the unique identifier for all the objects, both
of which are useful and reasonable things to have in the API anyway.

Change-Id: Ic19903e7b19832ca79290954ec373d4177789742
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236197
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-06-06 01:49:14 +00:00
Rebecca Stambler
4d5ea46c79 internal/lsp: support go mod vendor as a command
In addition to adding a `go mod vendor` command option, which can be
exposed via an editor client frontend, we show a suggestion to users who
experience the "inconsistent vendoring" error message.

The main change made here is that we save the view initialization error,
and we return it if the view has absolutely no metadata. This seems
reasonable enough, but my fear is that it may lead to us showing
outdated error messages. I will spend some time improving the handling
of initialization errors in follow-up CLs.

Updates golang/go#39100

Change-Id: Iba21fb3fbfa4bca956fdf63736b397c47fc7ae44
Reviewed-on: https://go-review.googlesource.com/c/tools/+/235619
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-04 18:33:45 +00:00
Josh Baum
dcff9671f6 internal/lsp: support code folding for composite literals
The existing implementation does not allow users to collapse composite literals.

Fixes golang/go#38360

Change-Id: If84de6b2c59218bd62fecb81efae2126547def1d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236377
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-04 17:49:48 +00:00
Pei Xian Chee
9b20fe4cab internal/lsp: added a fill struct code action
This code action generates key-value pairs of fields and default values between a struct's enclosing braces.

Fixes #37576

Change-Id: Ia0555164d2164c2bc90bb9ecabbb55042cdd3846
GitHub-Last-Rev: 0e4db3effad7212b6c2b226079fa8fc5464eb0b9
GitHub-Pull-Request: golang/tools#220
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227437
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-04 04:23:27 +00:00
Pontus Leitzler
1c0c6cf43e x/tools/internal/lsp/source: avoid panic in failing Highlight test
When testing Highlight the highlight count is checked against expected
number of highlights. If it doesn't match t.Errorf(...) is called and
the test continues.

A few lines below the test ranges over results using the index for both
result and expected result leading to a panic if there are less then
expected highlights.

This change fails fast with t.Fatalf(...) instead to avoid the panic.

Change-Id: I33d0973f3145c307d9084d037ffbb73b244a3acb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236099
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-03 17:03:22 +00:00
Rebecca Stambler
a64b766573 internal/lsp: fix a few staticcheck issues
Change-Id: I328d68d2250bc1cc975d8d9d14984c8f03fcd0e5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/235618
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-29 17:23:31 +00:00
Heschi Kreinick
7527cb292c internal/lsp/source: sort cached package completions by relevance
Cached packages are probably more relevant than uncached packages, but
we still need to go in relevance order, since we'll stop adding results
after we hit the cap.

Fixes golang/go#38461. (Hopefully.)

Change-Id: I555dd5f7568baa8d69760ed5836341a474e94346
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231619
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-27 17:50:47 +00:00
Heschi Kreinick
6a7cf6184f internal/lsp/source: fix cached package name matching
I made a silly mistake and checked the prefix on the import path rather
than the package name, which obviously breaks everything other than
top-level stdlib packages.

Fix that, then tweak the ranking a bit. We now get deep completions, which
is nice, but filled up the results too fast. Now instead of 5 results of
any kind, we give up after 5 packages searched.

Change-Id: I15b293f68f17531077da9ffe791a38ccc0e129f4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231617
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-27 17:50:42 +00:00
pjw
253fce384c internal/lsp: fix formatting edge cases (36824)
One line legal code like `package x; import "os"; func f() {}` was
being misformatted. In these cases the parse flag ImportsOnly loses
important parts of the code, while full parsing works. Presumably
all these cases are short enough that there is no appreciable penalty
from the extra parsing.

Fixes https://github.com/golang/go/issues/36824

Change-Id: I9a4581d67c590578f8fdea5ed2a2a58e0bc3c40b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234900
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-26 20:56:00 +00:00
Muir Manders
cf2d1e09c8 internal/lsp/source: offer smart "append()" completions
Assigning a slice to the appendage of itself is common and tedious
enough to warrant a special case completion candidate. We now offer
smarter "append()" candidates:

    var foo []int
    foo = app<> // offer "append(foo, <>)"
    fo<> // offer "foo = append(foo, <>)"

The latter is only offered if the best completion candidate is a
slice. It is inserted as the second-best candidate because it seems
impossible to avoid annoying false positives if it is ranked first.

I added a new debug option to disable literal completions. This was to
clean up some test logic that was disabling snippets for all tests
just to defeat literal completions. My tests were failing mysteriously
due to having snippets disabled, and it was hard to figure out why.

Change-Id: I3e8313e00a1409840cb99d5d71c593435a7aeb71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221777
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-20 22:05:37 +00:00
pjw
57a9e4404b internal/lsp: fix new bug duplicating comments after includes
Fixes https://github.com/golang/go/issues/39147

Change-Id: I6f78efccbabf21dbb00e56a49d88e26ff4733fba
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234584
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-19 20:57:26 +00:00
Michael Matloob
10921354bc go/packages: add a Module field to the Package struct
This change introduces Module and ModuleError struct types to the
packages package with the same types as defined in the cmd/go
documentation for module information output by go list (with the
exception of the Module type's Versions and Update fields).
go/packages will fill the module struct with the module information
output by go list. Drivers that support modules can also provide
module information by filling the Module fields in the packages in
their driverResponses.

Fixes golang/go#35921

Change-Id: Icbdf79869f09d26f6a01c3670146ace4f6ffa25e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234219
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-19 14:27:18 +00:00
pjw
8979540587 internal/lsp: simplify and correct fixing imports for CodeAction
The code was introducting syntax errors for some edge cases (example in
regtest/import_test.go), and I found it hard to follow.

The new code passes all the tests. There are new regtests to guarantee
no CodeActions are returned for some cases that vim testing noticed.

Change-Id: Ia09da667f74673c11bfe185e4f76a76c66940105
Reviewed-on: https://go-review.googlesource.com/c/tools/+/233117
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-18 22:54:12 +00:00
Rebecca Stambler
8018eb2c26 gopls: update dependencies in the go.mod
Change-Id: Iaf3f9d9d23f3977138978caac800c67c78bc92bd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234338
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-18 20:39:08 +00:00
Rebecca Stambler
39aadb5b76 internal/lsp: fix docs on hover for var/const blocks
The priorities for which comment to show should be 1) documentation
directly above the var/const, 2) documentation for the var/const block,
3) line comments.

See https://github.com/microsoft/vscode-go/issues/3240.

Change-Id: Ie136f0f25ac8208147070682bb1f3a663d6da25f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234101
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-18 19:53:06 +00:00
Heschi Kreinick
d3bf790afa internal/lsp: add Regenerate Cgo code lens
Now that we support authoring cgo packages better, we need a way to
regenerate the C definitions. Doing it automatically is very difficult;
in particular, referencing a new symbol from the C package may require
regeneration, but we don't want to do that for every typo.

For now, give the user a button and make them push it. We attach a
code lens to the import "C" line. This is vulnerable to the usual
user-didn't-save glitches.

Updates golang/go#35721.

Change-Id: Iaa3540a9a12bbd8705e7f0e43ad0be1b22e87067
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234103
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-05-15 22:01:28 +00:00
Rob Findley
8ddc06776e internal/lsp/source: don't link to packages matching GOPRIVATE in hover
Currently, our hover text by default links point to public documentation
sites (e.g. pkg.go.dev). This doesn't make sense for private repos, so
hide the hovertext link when the import path matches GOPRIVATE.

Implementing this was a little messy. To be optimal I had to thread
the value of goprivate through cache.view, and to be correct I had to
duplicate some code from cmd/go internal.

Regtest will follow after https://golang.org/cl/232983 is submitted.

Updates golang/go#36998

Change-Id: I1e556471bf919fea30132d9642426a08fdb7f434
Reviewed-on: https://go-review.googlesource.com/c/tools/+/233524
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-15 19:36:02 +00:00
Martin Asquino
2bc93b1c0c internal/lsp: add run test code lens
Change-Id: I2c47fa038c81851b2c1e689adc3812b23af55461
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231959
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-05-12 13:19:52 +00:00
Paul Jolly
ca5866bcf9 internal/lsp: add config option for SymbolMatch
In preparation for later changes to the workspace Symbol method, we add
a separate configuration option keyed by "symbolMatcher" that specifies
the type of matcher to use for workspace symbol requests. We also define
a new type SymbolMatcher, the type of this new option. We require
SymbolMatcher to be a separate type from Matcher because a later CL adds
a type of symbol matcher that does not make sense in the context of
other uses of Matcher, e.g. completion.

Change-Id: Icde7d270b9efb64444f35675a8d0b48ad3b8b3dd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228122
Reviewed-by: Robert Findley <rfindley@google.com>
2020-05-11 19:58:58 +00:00
Rebecca Stambler
8b0f8a7919 internal/lsp/source: handle nil pointer in package name hover
Updates golang/go#38977.

Change-Id: I8cbf0b058d77e749285cfe41b4b49de3764be861
Reviewed-on: https://go-review.googlesource.com/c/tools/+/233177
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-11 19:44:01 +00:00
Paul Jolly
e48fac377d internal/lsp: change workspace symbols to use session config for matcher
WorkspaceSymbols matches symbols across views using the given query,
according to the matcher Matcher.

The workspace symbol method is defined in the spec as follows:

 > The workspace symbol request is sent from the client to the server to
 > list project-wide symbols matching the query string.

It is unclear what "project-wide" means here, but given the parameters
of workspace/symbol do not include any workspace identifier, then it has
to be assumed that "project-wide" means "across all workspaces".  Hence
why WorkspaceSymbols receives the views []View.

However, it then becomes unclear what it would mean to call
WorkspaceSymbols with a different configured Matcher per View.

Therefore we assume that Session level configuration will define the
Matcher to be used for the WorkspaceSymbols method.

As part of this change we also tidy up lsp_test.go and source_test.go to
remove some repetition.

Change-Id: I444f9a78303ac9d2c8d8ac6496603b5758e4aafd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228763
Run-TryBot: Paul Jolly <paul@myitcv.org.uk>
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Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-11 19:21:19 +00:00
Rebecca Stambler
2212a7e161 internal/lsp: return in the default case in cloneExpr
As a follow-up to CL 232990, return in the default case so that the
compiler will complain if we fail to return.

Change-Id: Ib771dfcd1a67b33fd51508ac183b861c00417efb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232992
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-09 03:07:07 +00:00
Heschi Kreinick
058404a2dd internal/lsp/source: fix cloneExpr for SelectorExprs
A missing return in the SelectorExpr case meant that cloneExpr would
return the original node, resulting in AST corruption when the caller
modified it.

It might be nice to panic in the default case to prevent this from
happening again, but for now let's just fix it.

Fixes golang/go#38927.

Change-Id: Ib99f2dadecf52007ac9319c480fbd2d636a0474a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232990
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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2020-05-08 22:40:54 +00:00
Hana (Hyang-Ah) Kim
9b82503631 internal/lsp/source: return nothing for empty workspace symbol queries
In VS Code, a workspace symbol query with an empty query parameter
is issued as soon as users open the symbol search box. There are many
symbols in a reasonably sized project and the chance that a user finds
a result in the randomly chosen 100 items out of those many symbols is
low. Thus, this first query is often useless.

Ignore this query and return an empty result immediately.

Change-Id: Idc7703c8e460c9115ecbcf198907acc9c82add4d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232986
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-08 20:51:52 +00:00
Rob Findley
88bf40a80d internal/lsp/source: use the setString method when setting options
A couple string options were not using the asString helper. Update them,
and also add a setString helper to be consistent with setBool.

Change-Id: I38caef5b1595a3535b759e5bf1c8d350a8bf061e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232741
Run-TryBot: Robert Findley <rfindley@google.com>
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2020-05-08 18:47:48 +00:00
Rob Findley
cb8d9cd245 internal/lsp: support configurable codeLens
Some code lenses may be undesirable for certain users or editors -- for
example a code lens that runs tests, when VSCode already supports this
functionality outside of the LSP. To handle such situations, support
configuring code lenses via a new 'codelens' gopls option.

Add support for code lens in regtests, and use this to test the new
configuration. To achieve this, thread through a new 'EditorConfig' type
that configures the fake editor's LSP session. It made sense to move the
test Env overlay onto this config object as well.

While looking at them, document some types in source.Options.

Change-Id: I961077422a273829c5cbd83c3b87fae29f77eeda
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232680
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2020-05-08 18:47:35 +00:00
Rebecca Stambler
480da3ebd7 internal/lsp: return early in completion where possible
This a pure cut-and-paste.

Fixes golang/go#38868

Change-Id: I2ff07134a8b9f6186bab737caceab8a34a8e2f44
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232677
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2020-05-07 20:50:54 +00:00
Rob Findley
08cbf656ce internal/lsp/cache: add an UnsavedFiles method to Session
It is useful to know whether the session has any unsaved files, for
example to warn/error when executing a command that interacts only with
files on disk.

Add a new UnsavedFiles method to the Session.

Change-Id: Iea4bf472e3ed6897979306b670eb974a2ee0d3bb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232747
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-07 17:51:45 +00:00
Rebecca Stambler
88e38c1d8d internal/lsp: make sure diagnostics only refer to existing files
We were previously sending diagnostics for nonexistent files, and then
adding them to the snapshot in the process. Remove this behavior, and
add a regression test. Case insensitive filesystems were too confusing
to write a test for, but fortunately, Filippo reported another instance
of this bug, so I used that for the regression test.

Fixes golang/go#38602

Change-Id: I4ef6b51944f3338e838875a5aafffd066e8392f4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230315
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-05-07 02:01:22 +00:00
Ian Cottrell
535e1470ec internal/lsp: use %w in error wrappers
This fixes a bunch of fmt.Errorf calls to use %w rather than %v when wrapping
an error with additional context.

Change-Id: I03088376fbf89aa537555e825e5d02544d813ed2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231477
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-04 14:52:14 +00:00
Clint J Edwards
6b6965ac5d internal/lsp: add comment completions for remaining exported symbols
This should provide simple name completions for comments
above exported vars, constants, functions, and types.

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

Also fixes a panic introduced in the previous commit when completing comments that occur at the end of a file.

Fixes #34010
Fixes #38793

Demo: https://i.imgur.com/qN82CVA.mp4

Change-Id: If9aaec7ce03a3e085361144bce5c7a66535127d1
GitHub-Last-Rev: b9ac874c7ff3c9a164ba698d0d561141a59e2435
GitHub-Pull-Request: golang/tools#224
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230215
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-04 02:29:51 +00:00
Rebecca Stambler
ab2804fb9c internal/lsp: don't offer suggested fixes for generated files
As suggested on Slack, a better fix for golang/go#38467 would be to hide
suggested fixes on generated files. This way, the diagnostics are still
visible but files are not unintentionally modified.

Also, deleted the SuggestedFixes field on source.Diagnostic, since it's
entirely unused.

Change-Id: I10756471e0f913465b1cccd7f222eea0f4de77fe
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230999
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-01 06:56:59 +00:00
Muir Manders
f26c0dd982 internal/lsp/source: improve unimported package member ranking
Untyped members from unimported packages are scored the same as typed
members from unimported packages. We depended on the unimported
package relevance to rank the probably-more-relevant typed members
higher. However, there are some unrelated score penalties that can
only be applied to typed candidates, so the untyped candidates ended
up being ranked higher. Fix by increasing the relevance coefficient so
the relevance score overpowers other less important scoring
adjustments.

Fixes golang/go#38104.

Change-Id: Ie43f769a41511f9cc3747ce6936130be7a29cd31
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231238
Run-TryBot: Muir Manders <muir@mnd.rs>
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2020-04-30 22:11:53 +00:00
Rebecca Stambler
2840dafb9e Revert "internal/lsp: hide analysis diagnostics from generated files"
This reverts commit e4881b2459.

Reason for revert: <CL 230999 has a different approach to this>

Change-Id: I9ec47d858e7db2a66ec8a93063ab950b8553e45b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231042
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-30 19:28:56 +00:00
Rebecca Stambler
b8428586f4 internal/lsp: handle hover documentation for package declarations
We had previously not been generating documentation on hover for
package declarations or import specs. We do this by adding a few special
cases, since package declarations don't appear in type information.

Throughout, we make the assumption that only one file in a package will
have the documentation for the package. go/doc just appends
documentation as it sees it. We may be able to do better by checking for
a "Package ..." but that still is not guaranteed. Not sure what the
right approach is, so this assumption may be the best option.

Fixes golang/go#38526

Change-Id: Ibc515f8729e1aba0d11090be62371be6b18d0cfa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230417
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-29 20:57:41 +00:00
Rebecca Stambler
e4881b2459 internal/lsp: hide analysis diagnostics from generated files
Don't show non-vet analyses when they appear in generated files. Vet
analyzers will give useful reports even in generated files.

Fixes golang/go#38467

Change-Id: I0e628760b386553932de4cf1f5ba39784a205b53
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230597
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-29 20:34:34 +00:00
Rebecca Stambler
352a5409fa internal/lsp: handle different package names in signature help
There were a few cases where we were not properly qualifying package
names, particularly if the original package had a named import. Now,
we map between these names correctly - handling the case of multiple
packages that need to be qualified. This requires applying edits to
*ast.SelectorExprs, as well as *ast.Idents.

We still do not fully qualify unimported packages, and likely won't,
unless that's an issue for many users.

Updates golang/go#38591

Change-Id: I966a4d1f936f37ede89362d03da3ff98d8952a06
Reviewed-on: https://go-review.googlesource.com/c/tools/+/229979
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2020-04-27 20:59:12 +00:00
Rebecca Stambler
e0d5eebdf8 internal/lsp: fix docs on hover for ungrouped package variables
Fixes golang/go#38525

Change-Id: I8833c925663b67b2c82ad4cbf580d1c6f3c7a81d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/230305
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2020-04-27 18:59:06 +00:00