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Commit Graph

378 Commits

Author SHA1 Message Date
Rebecca Stambler
35ba81b9fb internal/lsp: reorganize and refactor code
This change cleans up internal/lsp/source/view.go to have a more logical
ordering and deletes the view.CheckPackageHandle function. Now, the only
way to get a CheckPackageHandle is through a snapshot (so all of the
corresponding edits).

Also, renamed fuzzy tests to fuzzymatch. Noticed this weird error when
debugging - I had golang.org/x/tools/internal/lsp/fuzzy in my module
cache and it conflicted with the test version.

Change-Id: Ib87836796a8e76e6b6ed1306c2a93e9a5db91cce
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208099
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-21 02:33:28 +00:00
Heschi Kreinick
8fd459516a internal/lsp: rename Files to CompiledGoFiles
As we improve support for cgo we'll need to reference GoFiles, not just
CompiledGoFiles. "Files" is right out.

I think I got everything that needs renaming but please let me know if
not.

Updates golang/go#35720.

Change-Id: I97a6ebf5b395535de0d5f4f8b3f84b46ca34643f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208101
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-20 22:19:51 +00:00
Heschi Kreinick
4bf2f4069d internal/lsp: fix and re-enable godef tests
None of the godef tests were running due to a mistake in the test
harness code. Fix them and re-enable.

We decided that the range for an import statement should be the whole
import path, not just the first character, so make that change and
adjust the PrepareRename tests accordingly.

Change-Id: I45756a78f2a1beb3c5180b5f288ce078075624bf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207900
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-20 21:51:18 +00:00
Rohan Challa
0a33398bd9 internal/lsp: improve highlighting functionality for fields and methods
Modified the way highlights are tested to allow for author to explicitly
mark the matches. Also added highlighting for fields and methods. Used
type checking in addition to ast to get better matching. Worked with
@stamblerre

Updates #34496

Change-Id: I462703e0011c4e0a4b98016e9c25af9bf1ead0b9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207899
Run-TryBot: Rohan Challa <rohan@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-20 18:14:12 +00:00
Rebecca Stambler
ad01d5993d internal/lsp: run diagnostics on the entire workspace
This change runs diagnostics on all packages in the workspace, instead
of just open files. We also want to avoid invalidating the type
information for a newly-opened file (since we should have it be default
now), so handle that case.

This causes a large increase in memory usage in the
internal/lsp/cmd tests, so to handle that, share an app between all of
the tests, rather than creating one per-test type.

Change-Id: Ifba18d77a700cda79ec79f66174de0e7f13fe319
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207353
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-20 00:10:58 +00:00
Anthony Fok
dc59f20efa all: fix typo ("identifer" → "identifier")
Change-Id: Ib61b94136923ec74154ff56c5237bea1877c8f14
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207843
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-19 21:19:57 +00:00
Rebecca Stambler
faf0e61b8a internal/lsp: don't search other packages for unexported references
Updates golang/go#35597

Change-Id: Ib17e94a99d49fe78f09f711b86f9115ac4aadeb9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207601
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-11-18 20:05:02 +00:00
pjw
5091d647ee internal/lsp: reorganize the generated Go code for the lsp protocol
Code generation has been unified, so that tsprotocol.go and tsserver.go
are produced by the same program. tsprotocol.go is about 900 lines shorter,
partly from removing boilerplate comments that golint no longer requires.
(And partly by generating fewer unneeded types.)

The choice made for a union type is commented with the set of types. There
is no Go equivalent for union types, but making themn all interface{}
would replace type checking at unmarshalling with checking runtime
conversions.

Intersection types (A&B) are sometimes embedded (struct{A;B;}, and
sometimes expanded, as they have to be if A and B have fields with the
same names.

There are fewer embedded structs, which had been verbose and confusing to
initialize. They have been replaced by types whose names end in Gn.

Essentially all the generated *structs have been removed. This makes
no difference in what the client sends, and the server may send a {}
where it previously might have sent nothing. The benefit is that some
nil tests can be removed. Thus 'omitempty' in json tags is just
documentation that the element is optional in the protocol.

The files that generate this code will be submitted later, but soon.

Change-Id: I52b997d9c58de3d733fc8c6ce061e47ce2bdb100
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207598
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-18 19:51:19 +00:00
Muir Manders
5a76f03bc7 internal/lsp: fix variadic interface completion ranking
In cases like:

var foo []io.Writer
var buf *bytes.Buffer
foo = append(foo, <>)

we weren't giving "buf" a good score. When comparing the candidate
type *bytes.Buffer to the (variadic) expected type []io.Writer we were
turning the candidate type into []*bytes.Buffer. However, of course,
[]*bytes.Buffer is not assignable to []io.Writer, so the types didn't
match. Now we instead turn the expected type []io.Writer into
io.Writer and compare to *bytes.Buffer.

I fixed the @rank test note to check that the candidates' scores are
strictly decreasing. Previously it would allow candidates with the
same score if they happened to be in the right order. This made it
easier to right a test for this issue, but also uncovered an issue
with untyped completion logic. I fixed it to do the untyped constant
check if _either_ the expected or candidate type is
untyped (previously it required the candidate type to be untyped).

Fixes golang/go#35625.

Change-Id: I9a837d6a781669cb7a2f1d6d3d7f360c85be49eb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207518
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-18 05:14:29 +00:00
Rebecca Stambler
80313e1ba7 internal/lsp: fix panic in bestView
Rather than panicking when we have not created any views for the packages,
we should show a reasonable error to the user. This change propagates the
errors to the user.

Updates golang/go#35599

Change-Id: I49789d8ce18e154f111bc3584488f468a129e30c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207344
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-11-16 21:44:31 +00:00
Rebecca Stambler
634482edb0 internal/lsp: ignore AST errors when generating import edits
go/parser.ParseFile can return both an AST and errors. We should still
be able to do import organization even if the AST contains errors, as
long as they are below the portion of the file that contains the import
block.

Change-Id: Id6b86171fca3e15d02910d1c6f4ce25e803754d0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207261
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-14 22:23:41 +00:00
Michael Matloob
caa0b0f7d5 internal/lsp/source: add support for references in the same workspace
When looking for references, look in the entire workspace rather than
the same package. This makes the references query more expensive because
it needs to look at every package in the workspace, but hopefully
it shouln't be user-noticable. This can be made more efficient by only
checking packages that are transitive reverse dependencies. I don't think a
mechanism to get all transitive reverse dependencies exists yet.

One of the references test have been changed: it looked up references
of the builtin int type, but now there are so many refererences that
the test too slow and doesn't make sense any more. Instead look up
references of the type "i" in that file.

Change-Id: I93b3bd3795386f06ce488e76e6c7c8c1b1074e22
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206883
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-14 20:04:27 +00:00
Rebecca Stambler
faa69481e7 internal/lsp/cache: add finer-grained control of file changes
This change is the first step in centralizing control of modifications
to different files, either within the workspace or outside of it. We add
a source.FileAction type to pass into the internal/lsp/cache package and
handle the difference between opening and creating a file.

Now that we load all packages in a workspace by default, we no longer
need to re-load a file on open. This CL should enable CL 206883 to work
correctly.

Change-Id: I2ddb21ca2dd33720d668066e73283f5629d02867
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206888
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-14 16:11:15 +00:00
Rebecca Stambler
e2727e816f internal/lsp: use the versions provided by the client
This change propagates the versions sent by the client to the overlay
so that they can be used when sending text edits for code actions and
renames.

Fixes golang/go#35243

Change-Id: I8d1eb86fe9f666f7aa287be5026b176b46712c97
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205863
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-13 23:20:20 +00:00
Rebecca Stambler
bc1376d635 internal/lsp: look up files in packages by position instead of URI
This change makes sure that we only return files that contain the given
position. There are a few instances of needing to look up files by URI
in the internal/lsp/cache package, so use an unexported package for
that. This allows us to remove some code in the implementations code.

Change-Id: Ifa7a62c67271826e6c632e4c88667d60f8b760c4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206880
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-11-13 16:34:02 +00:00
Rebecca Stambler
e33b02e766 internal/lsp: use versioned URIs in rename and code actions
This change adds support for returning versions along with file URIs, so
that the client can know when to apply changes. The version is not yet
propagated along to the internal/lsp/cache package, so this change will
have no effect (VS Code ignores a version of 0 and still applies the
changes).

A few minor changes made in the rename code (to remove the view
parameter). Some minor staticcheck fixes.

Updates golang/go#35243

Change-Id: Icc26bd9d9e5703c699f555424b94034c97b01d6f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206882
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-13 05:52:40 +00:00
Heschi Kreinick
c81e7ae886 internal/lsp/source: unify import adding code
We used to need our own copy of astutil.AddNamedImport to use during
completion for a variety of reasons, but I think the major one was
needing to not format the whole file. The same problem applied to using
the imports package.

Happily, that was resolved in CL 205678. Now we can use the same
implementation on both paths. In addition to removing a bunch of code,
that means that unimported completions now add their imports in the
right place, respecting goimports grouping and the local configuration
setting.

Fixes golang/go#35519.

Change-Id: I693c2e8b5ced9bac62b1febf1e2db23c770e5a7a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206881
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-12 22:26:51 +00:00
Michael Matloob
323f198ced internal/lsp: support implementations requests for implementations in other packages
Look in all packages the snapshot knows of (through a new method on snapshot called
KnownPackages) and see if any of those packages contain implementations. Before,
the Implementation call only looked in the current package.

Much of the new complexity in implementation.go is routing through the Type to
Package data in the implementsResult.pkg field so the identifier can be looked up
in its correct package.

Fixes golang/go#32973

Change-Id: Ifa7115b300f52fb4fb55cc00db2e7f339e8c2582
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206518
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-12 18:49:59 +00:00
Ian Cottrell
c41a8f58b5 internal/lsp: make View.SetOptions save and useful
It attempts to detect changes that would invalidate the view and replace itself
with a new view when that happens

Change-Id: I0f1a8cd3bd6ddcef115fedc6c57ae0398b16d3b6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206147
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-12 16:15:35 +00:00
Francesco Renzi
a3f652f180 tools/gopls: add cmd support for folding_ranges
This change adds command line support for foldingRange.
Provided with a file, it will display a list of folding
ranges within that file, with 1-indexed positions using
the format
{startingLine}:{startingChar}-{endingLine}:{endingChar}

Example:

$ gopls folding_ranges ~/tmp/foo/main.go
$
$ 3:9-6:0
$ 10:22-11:32
$ 12:10-12:9
$ 12:20-30:0

Updates golang/go#32875

Change-Id: Ib35cf26088736e7c35612d783c80be7ae41b6a70
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206158
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-12 00:55:09 +00:00
Michael Matloob
a99edfee0d internal/lsp: support implements for methods on an interface
This change copies the code in guru's implements implementation
that finds implementations of methods over to gopls, and uses
the information determined to resolve implements requests on
methods. Implements still only works only within packages.

Updates golang/go#32973

Change-Id: I0bd7849a9224fbef7ab8385070b18fbb30703e2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206150
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-11 15:43:54 +00:00
Muir Manders
97ad0ed331 internal/lsp: improve completion in append() calls
Add a special case for append() arguments so we infer the expected
type from the append() context. For example:

var foo []int
foo = append(<>)

We now infer the expected type at <> to be []int. We also support the
variadicity of append().

Change-Id: Ie0ef0007907fcb7992f9697cb90970ce4d9a66b8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205606
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-09 21:27:01 +00:00
Heschi Kreinick
7d206e10da internal/lsp/source: start import diffs at byte 0
I assumed that f.Pos() would be the first byte of the file, but it's the
position of the package declaration. This kills the file. Just use 0.

Fixes golang/go#35458.

Change-Id: Ic77c93344c71435ef8e5624c2f2defb619139a15
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206145
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-08 19:30:12 +00:00
Rebecca Stambler
f7ea15e60b internal/lsp: return completion item without documentation
Previously, if we failed to find an item's documentation, we would not
return the item at all. It seems better to do a best-effort approach,
i.e. return the item without documentation.

Fixes golang/go#35406

Change-Id: I896ffda2fc79b9210f0d83311808114d0e686820
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205862
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-07 23:55:19 +00:00
Michael Matloob
a4a09c7216 internal/lsp: call load in (*session).NewView
Add a source.Scope type that can be used to refer to directories or
files, and modify (*snapshot).load to take source.Scope.
Then call load in NewView.

Change-Id: I8f03c7b271d700b162100d2890d23219ef9578c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204822
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-07 23:34:59 +00:00
Heschi Kreinick
8ceaad4c15 internal/lsp/source: don't format the whole file when adding imports
We want people to add imports as they need them. That means we probably
don't want adding an import to reformat your whole file while you're in
the middle of editing it.

Unfortunately, the AST package doesn't offer any help with this --
there's no good way to get a diff out of it. Instead, we apply the
changes, then diff a subset of the file. Picking that subset is tricky,
see the code for details.

Also delete a dead function, Imports, which should have been unused but
was still being called in tests.

Fixes golang/go#30843.

Change-Id: I09a5344e910f65510003c4006ea5b11657922315
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205678
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-07 22:26:10 +00:00
Muir Manders
0c330b00b1 internal/lsp: improve literal func completion candidates
Previously we were erroneously suggesting a "func() {}" literal in
cases like:

http.Handle("/", <>)

This was happening because saw that the http.HandlerFunc type
satisfied the http.Handler interface, and that http.HandlerFunc is a
function type. However, of course, you can't pass a function literal
to http.Handle().

Make a few tweaks to address the problem:

1. Don't suggest literal "func () {}" candidates if the expected type
   is an interface type.

2. Suggest named function types that implement an interface. This
   causes us to suggest "http.HandlerFunc()" in the above example.

3. Suggest a func literal candidate inside named function type
   conversions. This will suggest "func() {}" when completing
   "http.HandlerFunc(<>)".

This way the false positive func literal is gone, and you still get
literal candidates that help you use an http.HandlerFunc as an
http.Handler. Note that this particular example is not very compelling
in light of http.HandleFunc() which can take a func literal directly,
but such a convenience function may not exist in other analogous
situations.

Change-Id: Ia68097b9a5b8351921349340d18acd8876554691
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205137
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-07 21:18:00 +00:00
Muir Manders
c07e1c6ef6 internal/lsp: improve variadic completion
Improve candidate ranking when completing the variadic parameter of
function calls.

Using the example:

func foo(strs ...string) {}

- When completing foo(<>), we prefer candidates of type []string or
  string (previously we only preferred []string).

- When completing foo("hi", <>), we prefer candidates of type
  string (previously we preferred []string).

- When completing foo(<>), we use a snippet to add on the "..."
  automatically to candidates of type []string.

I also fixed completion tests to work properly when you have multiple
notes referring to the same position. For example:

foo() //@rank(")", a, b),rank(")", a, c)

Previously the second "rank" was silently overwriting the first
because they both refer to the same ")".

Fixes golang/go#34334.

Change-Id: I4f64be44a4ccbb533fb7682738c759cbca3a93cd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205117
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-07 18:57:33 +00:00
Heschi Kreinick
c2ac6c2a2d internal/lsp/source: don't unconditionally name imports
In CL 205501 I thoughtlessly set import name to package name, but really
we only want to name imports when goimports would do it. For now, it's
better to not name them and let the usual imports code add a name if
necessary.

Fixes golang/go#35397.

Change-Id: Id0df866f95e5e86ed72b25fbd1a7224c79ee8084
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205657
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-06 18:57:28 +00:00
Muir Manders
ea203083f5 internal/lsp: add config flag to hide debugging output
Add a new "verboseOutput" config flag (defaults to "false") to enable
verbose go/packages and imports output. Previously this output was
always present.

The go/packages output would dump out the entire (humongous) "go list"
JSON response which would lock up my editor for a second whenever
something triggered a go/packages call.

The imports output would produce a bunch of "gopathwalk" debug
messages that aren't useful in general and in particular add noisy
output to tests.

Change-Id: Ie4693d074cb84f1397e0e51d7346dc9391bd1278
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205138
Reviewed-by: Koichi Shiraishi <zchee.io@gmail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-05 20:43:22 +00:00
Heschi Kreinick
818555187f internal/lsp/source: attach Package to completions when available
Unimported completions now try to pull Packages from everywhere, not
just the transitive dependencies of the current package. That confused
the import formatting code, which only looked at deps. Pass the Package
along with the import suggestion, and use it when it's present.

Also change some error messages to be different for diagnostic purposes.

Fixes golang/go#35359.

Change-Id: Ia8ca923e46723e855ddd2da7611e6eb13c02bb4f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205501
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-05 20:21:09 +00:00
Rebecca Stambler
3c3d1ad199 internal/lsp: add LocalPrefix configuration
Updates golang/go#32049

Change-Id: I64e5201170b5be8b470c436264e18e12ec8d12f2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204820
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-04 23:01:36 +00:00
Heschi Kreinick
f505e54dbd internal/lsp: use available type info for unimported completions
Packages that aren't imported in the current file will often have been
used elsewhere, which means that gopls will have their type information
available. Expose loaded packages in the Snapshot, and try to use that
information when possible for unimported packages.

Change-Id: Icb672618a9f9ec31b9796f0c5da56ed3d2b38aa7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204824
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-04 21:31:10 +00:00
Heschi Kreinick
88c5938121 internal/lsp/source: propose exports for unimported packages
When a user completes rand.<>, propose rand.Seed (from math/rand) and
rand.Prime (from crypto/rand), etc.

Because we don't necessarily have type checking information for
unimported packages, I had to add shortcut cases to a number of
functions around the completion code. Better suggestions welcome.

Change-Id: I7822dc75c86b24156963e7bdd959443f4f2748b1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204819
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Muir Manders <muir@mnd.rs>
2019-11-04 21:31:03 +00:00
Rebecca Stambler
075a17623f internal/lsp: do not format the file on import organization
Updates golang/go#30843
Updates golang/go#35114

Change-Id: Id3f66d20b1ada9e53298b2370214b23b87bb0680
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204557
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-04 17:18:53 +00:00
Michael Matloob
a860bcda08 internal/lsp/source: add a nil check on the identifier's object in implementation
If the identifier doesn't have type info, don't try to access it.

Change-Id: I7e7c834c2863ec82a1269e60f7c50b0ce03f4692
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204740
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-01 17:58:24 +00:00
Francesco Renzi
f02a19dded tools/gopls: add cmd support for symbols
This change adds command line support for symbols.
Symbols are formatted as '{name} {type} {range}', with
children being preceded by a \t.

Example:

$ gopls symbols ~/tmp/foo/main.go
$
$ x Variable 7:5-7:6
$ y Constant 9:7-9:8
$ Quux Struct 29:6-29:10
$ 	Do Method 37:16-37:18
$ 	X Field 30:2-30:3
$ 	Y Field 30:5-30:6

Updates golang/go#32875

Change-Id: I1272fce733fb12b67e3d6fb948f5bf3de4ca2ca1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203609
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-01 17:43:07 +00:00
Rebecca Stambler
5be387d313 internal/lsp: enable go-diff by default
Also, fix a minor staticcheck warning.

Change-Id: Ic500215dac7985a9d8a7189aea4e1be7b20f7780
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204560
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-01 15:53:06 +00:00
Michael Matloob
02d0efc0fb internal/lsp: add support for implements to the LSP
This adds support for the LSP implemention call, based
on the guru code for getting implementations. The guru code
did much more than we need, so some of the code has been
dropped, and other parts of it are ignored (for now).

Fixes golang/go#32973

Change-Id: I1a24450e17d5364f25c4b4120be5320b13ac822b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203918
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-10-31 16:03:44 +00:00
Muir Manders
86caa796c7 internal/lsp: search candidate type's package for completions
When our expected type is a named type from another package, we now always
search that other package for completion candidates, even if it is not currently
imported.

Consider the example:

-- foo.go --
import "context"
func doSomething(ctx context.Context) {}

-- bar.go--
doSomething(<>)

"bar.go" doesn't import "context" yet, so normally you need to first import
"context" through whatever means before you get completion items from "context".
Now we notice that the expected type's package hasn't been imported yet and give
deep completions from "context".

Another use case is with literal completions. Consider:

-- foo.go --
import "bytes"
func doSomething(buf *bytes.Buffer) {}

-- bar.go--
doSomething(<>)

Now you will get a literal completion for "&bytes.Buffer{}" in "bar.go" even
though it hasn't imported "bytes" yet.

I had to pipe the import info around a bunch of places so the import is added
automatically for deep completions and literal completions.

Change-Id: Ie86af2aa64ee235038957c1eecf042f7ec2b329b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/201207
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-10-30 06:26:58 +00:00
Rebecca Stambler
8456940f41 internal/lsp: remove the pkg.view field, in preparation for CL 204079
This change encompasses the refactorings needed to correctly implement
CL 204079. The goal of this CL is to make the actual relevant diffs more
clear.

Change-Id: I38acfd436e2380be790910e01b6e37d8280e9100
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204139
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-29 23:14:01 +00:00
Muir Manders
e96d959c47 internal/lsp: downrank untyped completion candidates
In cases like:

type myInt int
const (
  a       = 1
  b myInt = 2
)
var foo myInt = <>

We now prefer "b" over "a" since b's type matches the expected type
exactly.

Change-Id: I675934761cc17f6b303b63b4715b31dd1af7cea1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202737
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-25 17:43:33 +00:00
Francesco Renzi
2b544e3f2d tools/gopls: add cmd support for references
This change adds command line support for references.

Example:

$ gopls references ~/tmp/foo/main.go:8:6
$ gopls references ~/tmp/foo/main.go:#53

Updates golang/go#32875

Change-Id: I9a0cf6ae8ba0a5c3d4ffc829b96fe3b42297c192
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202178
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-10-25 16:51:12 +00:00
Muir Manders
cf891b754e internal/lsp: disable completion time budget in tests
Now a budget of 0 disables mean unlimited and tests no longer set the
budget. Hopefully the deep completion tests will stop flaking.

Updates golang/go#34617

Change-Id: Icdff5e78dcf1cc3d3fcbf0326716b39b00f0a8c1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203338
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-25 16:51:05 +00:00
Rebecca Stambler
2077df3685 internal/lsp: remove analyzers from Analyze result
Also, address minor comments that I ignored from Heschi because I am
obnoxious.

Change-Id: I99dcac38578585af2cdd951dd2b9755732ef945f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203281
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-25 02:35:17 +00:00
Rebecca Stambler
3d91e92cde internal/lsp: stop caching diagnostics on the package
Now that we are using the memoize package to cache analysis results, we
can use that cache for suggested fixes.

Change-Id: I42905a6fe575f49d38979d53d58ea8ec59210ae0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203278
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-10-24 22:03:59 +00:00
Muir Manders
5228f4b59c internal/lsp: improve completions in *ast.MapType
We now expect a type name when in the key or value of a *ast.MapType.
I also added an extra filter to expect a comparable type for the key.

Change-Id: I647cf4d791b2c0960ad3b12702b91b9bc168599b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/197439
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-10-24 19:03:17 +00:00
Rebecca Stambler
2b779830f9 internal/lsp: don't associate package with snapshot
This change effectively reverts CL 202039. This CL was a mistake, as it
creates a cycle. Snapshots hold CheckPackageHandles, which in turn hold
pkgs.

Change-Id: I944304cb365f0ef98b5e54ea38edea6cece40453
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202740
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-10-23 20:24:04 +00:00
Muir Manders
98e333b8b3 internal/lsp: improve completion for *ast.ArrayTypes
*ast.ArrayTypes are type expressions like "[]foo" or "[2]int". They
show up as standalone types (e.g. "var foo []int") and as part of
composite literals (e.g. "[]int{}"). I made the following
improvements:

- Always expect a type name for array types.
- Add a "type modifier" for array types so completions can be smart
  when we know the expected type. For example:

var foo []int
foo = []i<>

  we know we want a type name, but we also know the expected type is
  "[]int". When evaluating type names such as "int" we turn the type
  into a slice type "[]int" to match against the expected type.
- Tweak the AST fixing to add a phantom selector "_" after a naked
  "[]" so you can complete directly after the right bracket.

I split out the type name related type inference bits into a separate
typeNameInference struct. It had become confusing and complicated,
especially now that you can have an expected type and expect a type
name at the same time.

Change-Id: I00878532187ee5366ab8d681346532e36fa58e5f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/197438
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-10-23 16:34:50 +00:00
Rebecca Stambler
0bbdf54eff internal/lsp: modify approach to watching changed files
This change modifies the invalidContent function to take a file change
type. This allows us to eliminate the separate invalidateMetadata
function. The logic of watching changed files is then further pushed
into the caching layer.

Updates golang/go#34218

Change-Id: Id31b3931c45ec408b6e7b4a362e00f9091ba4f70
Reviewed-on: https://go-review.googlesource.com/c/tools/+/201221
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-22 21:33:45 +00:00