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Commit Graph

427 Commits

Author SHA1 Message Date
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-13 19:21:09 +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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-11 23:36:49 +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
Run-TryBot: Iskander Sharipov <quasilyte@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-11 23:00:51 +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
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
Run-TryBot: Iskander Sharipov <quasilyte@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-10 22:10:49 +00:00
Rohan Challa
115af5e89b internal/lsp: fix control flow highlighting taking precedence
The control flow highlighting is taking precedence when
you are highlighting a key:value expression within the return statement.
Expected behavior is to just highlight all instances of the key or value and ignore
the control flow statement when inside the scope.

Fixes golang/go#36057

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

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

Change-Id: Ib59fb717e5c1a181cc713581a22e60ed654b918c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210279
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-09 20:39:02 +00:00
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
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-06 20:40:35 +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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-06 19:13:54 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-05 22:50:56 +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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
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
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
Muir Manders
5ae4576c3a internal/lsp: improve completion after accidental keywords
Sometimes the prefix of the thing you want to complete is a keyword.
For example:

variance := 123
fmt.Println(var<>)

In this case the parser produces an *ast.BadExpr which breaks
completion. We now repair this BadExpr by replacing it with
an *ast.Ident named "var".

We also repair empty decls using a similar approach. This fixes cases
like:

var typeName string
type<> // want to complete to "typeName"

We also fix accidental keywords in selectors, such as:

foo.var<>

The parser produces a phantom "_" in place of the keyword, so we swap
it back for an *ast.Ident named "var".

In general, though, accidental keywords wreak havoc on the AST so we
can only do so much. There are still many cases where a keyword prefix
breaks completion. Perhaps in the future the parser can be
cursor/in-progress-edit aware and turn accidental keywords into
identifiers.

Fixes golang/go#34332.

PS I tweaked nodeContains() to include n.End() to fix a test failure
against tip related to a change to go/parser. When a syntax error is
present, an *ast.BlockStmt's End() is now set to the block's final
statement's End() (earlier than what it used to be). In order for the
cursor pos to test "inside" the block in this case I had to relax the
End() comparison.

Change-Id: Ib45952cf086cc974f1578298df3dd12829344faa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209438
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-03 04:30:02 +00:00
Rohan Challa
2b6af5f9ac internal/lsp: add nil check for control flow highlighting
Added a check to make sure that highlighting the control flow of
a function only continues if the cursor is actually in a function.

Change-Id: Idac90d9e55c09c3dcb9ae938585157658acc95e9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209581
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-12-02 20:31:27 +00:00
Rohan Challa
aa29eadba2 internal/lsp: add control flow highlighting for functions
When the cursor is on a return statement or in the function declaration
it will highlight the control flow for the function. It will also highlight
individual fields and results if the cursor is specifically in one.

Fixes #34496

Change-Id: I71d460cd174a8fbc61d119b9633c3c3ecbde2af9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208267
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-02 19:01:20 +00:00
Rebecca Stambler
a51b8faf84 internal/lsp: rename CheckPackageHandle to PackageHandle
Change-Id: I4ea5fed9fcb71b77da4a15c9d85792bda815ddf5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209419
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-12-02 18:29:46 +00:00
Jędrzej Szczepaniak
6e064ea0cf internal/lsp: link to the new pkg.go.dev instead of godoc.org
Updates golang/go#35563

Change-Id: I88ae3f742daf5043d4784fe8827454fb1ce1f9db
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209337
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-30 07:06:09 +00:00
Rebecca Stambler
ecd32218bd internal/lsp: make sure CodeAction.Command is a pointer
This is causing the "command '' not found" errors that we've been
seeing, specifically reported in microsoft/vscode-go#2920.

Also, fixed an issue with import organization in single-line files that
was caught as a result of this.

Change-Id: I2dfedb5d1b8dda976f356b0d6fcd146e53f1a650
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209219
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-27 20:10:27 +00:00
Rohan Challa
e13f15d1b9 internal/lsp: fixes premature return in find implementations
Find implementations sometimes returns no results, as it prematurely returns when it
finds an invalid object. Instead the behavior should be to check all the objects in case
a later object is a valid interface.

Fixes #35602

Change-Id: I0e3e2aa8d3afeaa34e392c2fe3ef8cdcd13b3d1e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208959
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-26 21:00:16 +00:00
Rohan Challa
af8577037c internal/lsp: remove duplicate implementations when finding implementations
Finding implementations adds the same implementation multiple times, this commit
removes the duplicates and ensures that only one instance of each implementation
gets returned. Also moves the sorting of results to the test file to ensure that
the tests are deterministic.

Fixes #35600

Change-Id: I244d36a46b7e31bf3c1f845e241239de05d45e6f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208668
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-26 20:43:40 +00:00
Rebecca Stambler
73cd2cc3b5 internal/lsp: don't run analyses on the entire view
Running staticcheck on the entire workspace causes a slowdown, and most
likely users don't want to see staticcheck reports for every
subdirectory of their workspace. Only run staticcheck on open files.

Also, fixed a staticcheck warning that showed up along the way. Filed
golang/go#35718 to remind ourselves to fix all of the staticcheck warnings
that showed up when we ran gopls with staticcheck on x/tools.

Finally, made sure that we don't send empty diagnostics when diagnosing
the snapshot on start-up, as that is not necessary.

Change-Id: Ic51d1abfc80b1b53397057f06a4cfd7e2dc930f9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208098
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-25 22:48:44 +00:00
Heschi Kreinick
9f1eb44090 internal/lsp/source: fix crash on short file
The import formatting code tries to extend the range it's diffing to
the next line after the last import so that it's working with whole
lines. Make sure that the next line actually exists before trying to use
it.

Fixes golang/go#35604.

Change-Id: I18fe61843aa11e62ed311a9ddff62ff876888a15
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208672
Run-TryBot: Heschi Kreinick <heschi@google.com>
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Reviewed-by: Muir Manders <muir@mnd.rs>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 22:36:40 +00:00
Rohan Challa
73db347c3b internal/lsp: do not return interface itself when finding implementations
Finding implementations of an interface should not give the interface itself
as an implementation.

Fixes #35601

Change-Id: Id3352619ece90fb7ca906ddabca613742d156c76
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208667
Run-TryBot: Rohan Challa <rohan@golang.org>
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2019-11-25 20:50:44 +00:00
Heschi Kreinick
66af5afb16 internal/lsp/source: give more imports names
Expose ImportPathToAssumedName (internally) and use it in an LSP
completion case that doesn't go through the usual imports code.

Fixes golang/go#35401.

Change-Id: If87912072e11e22c542f7474841e53467a33ef2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206890
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 20:50:14 +00:00
Rebecca Stambler
b99b2d090f internal/lsp: fix return variables for FindPosInPackage
Change-Id: Icaa9595f05ab9583e60fc0392cbe21e1f20a3934
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208666
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-25 19:51:13 +00:00
Rebecca Stambler
d7101b74a4 internal/lsp: set version correctly after textDocument/didOpen
The early return logic for didOpen events in
(*snapshot).invalidateContent was preventing the creation of a new
snapshot, which was in turn stopping the versions from being updated.

This exposed a fundamental issue in the way we were calculating
workspace diagnostics. Since we weren't waiting for diagnostics to be
completed for an entire snapshot before replying that the server had
been initialized, snapshots were being cloned without any type
information. For quickfix code actions, we assume that we have all
information cached (since we need to have sent the diagnostics that the
quickfix is mapped to), so we were not finding the cached analysis
results.

To handle this in the short-term, we key analyses by their names, and
then regenerate results as-needed for code actions. This is technically
more correct than simply assuming that we have the analyses cached. In a
follow-up CL, I will send a follow-up that will make sure that
snapshots "wait" on each other to be fully constructed before being
cloned.

Change-Id: Ie89fcdb438b6b8b675f87335561bf47b768641ac
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208265
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-25 19:35:51 +00:00
Heschi Kreinick
ef6787d357 internal/lsp: track and parse non-compiled go files
When packages.Load'ing cgo packages, the authored files show up in
GoFiles, and the generated files show up in CompiledGoFiles. We need the
AST and type information for the latter, since they're the only thing we
can type check. But we also need the contents (and column mapper) for
the authored file so that we can navigate into it.

Store GoFiles in package metadata and checked Packages. Parse the extra
files, just for their mappers. Refactor the View functions a little bit,
since there's only one place that actually needs to find the mapper for
a file.

Updates golang/go#35720.

Change-Id: I9f96872a9a592bf0e11da27ebd8976c6db8752c9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208502
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 19:20:50 +00:00
Heschi Kreinick
761dbfd69d internal/span: support line directives
When //line directives are in play, the ast.File's Offset function will
return offsets in the generated file. We want offsets in the authored
file, so we need to pass a Converter for the authored file, in addition
to the ast.File for the generated file. For the same reason, we have to
start (Range).Span() by translating into positions in the authored file,
then calculate offsets from that.

A lot of call sites outside of the LSP don't pass the Converter, but
they probably don't matter much. I think everything inside does because
it ends up using mappedRange.

Updates golang/go#35720.

Change-Id: I7be09b3a50720b078e862d48cfdb02208f8187ae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208501
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 19:20:43 +00:00
Rohan Challa
acc15743c3 internal/lsp: add documentation for package-level vars
Adds documentation on hover for package-level variables and constants.

Fixes #33793

Change-Id: I01b9d36b0551f246d2ad6056806db18bdd7adb5e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208662
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 18:28:23 +00:00
Muir Manders
a99e43fcff internal/lsp: fix literal completions in variadic params
In cases like:

var foo []bytes.Buffer
foo = append(foo, <>)

you will now get a literal candidate "bytes.Buffer{}". Previously we
were skipping all literal candidates at the variadic position, but the
intention was to only skip literal slice candidates (i.e.
"[]bytes.Buffer{}" in the above example).

I also improved the literal struct snippet to not leave the cursor
inside the curlies when the struct type has no accessible fields.
Previously it was only checking if the struct had no fields at all.
This means after completing in the above example you will end up with
"bytes.Buffer{}<>" instead of "bytes.Buffer{<>}", where "<>" denotes
the cursor.

Change-Id: Ic2604a4ea65d84ad855ad6e6d98b8ab76eb08d77
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207537
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 18:03:14 +00:00
Rebecca Stambler
a911d9008d internal/lsp: only search for references in reverse dependencies
Updates golang/go#35597

Change-Id: I78e83ad0ee1ae3c59a7452c467b3abd34587a845
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208657
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-25 14:46:06 +00:00
Rebecca Stambler
cc15fab314 internal/lsp: use AST to construct placeholders
Type aliases don't work well with types.TypeString. Work around that by
using the AST to build this information. Follow up from CL 201677.

Fixes golang/go#33500

Change-Id: I8b2d4ea238eb5d284a419f2b0bbf9655e69d434d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208497
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-25 01:11:57 +00:00
Rebecca Stambler
c02aa52d2b internal/lsp: handle first change behavior on the server side
I'm not sure why this was being managed by the view, but delete the code
that handles tracking a file's first change. It is only used to avoid
spamming the user with error messages.

Change-Id: Id95089478ffb7e189d38cbc147e3dde6a1c55c5e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208274
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-22 18:53:53 +00:00
Rebecca Stambler
f191eec953 internal/lsp: use snapshot to get reverse dependencies
This change modifies the behavior of the GetReverseDependencies function
used for diagnostics. Since we now return diagnostics for the entire
workspace, we don't have to worry if a file is open to show errors in
it. This change requires the addition of a new (*snapshot).PackageHandle
function that gets a CheckPackageHandle for a given package ID. This
function does not cause a re-load of the package metadata, though if we
feel that this is something we need in the future we can add it.

Change-Id: I863bdf284d15f2317d8fae395928a90b9455146b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208102
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-22 02:13:35 +00:00
Rebecca Stambler
004141db30 internal/lsp: delete the source.Diagnostic.File field
Since diagnostics are published with the URI separately, there's no need
for us to keep the FileIdentity around in two places.

Change-Id: I5724b9582e5eee49f66fcf9f08625f14a69e3fc0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208263
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-22 00:05:30 +00:00
Rohan Challa
66c5a5ad76 internal/lsp: add control flow highlighting inside for loops
When the cursor is on a "for" statement or on any branch statement inside
the for loop. It will highlight the control flow inside the for loop.

Updates #34496

Change-Id: Idef14e3c89bc161d305d4a49fd784095a93bbc03
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208337
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-21 21:43:27 +00:00
Rebecca Stambler
eaeb383209 internal/lsp: use version numbers in diagnostic messages
This change uses the FileIdentity when reporting an error message, so
that the version number can be propagated to through the
publishDiagnostics notification.

Change-Id: I6a2103e304717ca09895008ea40336e3ace3c66d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208260
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-11-21 20:01:42 +00:00
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