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Commit Graph

255 Commits

Author SHA1 Message Date
Rebecca Stambler
cae9aa5434 internal/lsp: show "do not edit" message when user opens generated file
This is probably a better approach than showing an extra diagnostic,
since a user cannot dismiss a diagnostic.

Fixes golang/go#33397

Change-Id: I92b9a00f51a463673993793abfd4cfb99ce69a91
Reviewed-on: https://go-review.googlesource.com/c/tools/+/188766
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-08-07 16:44:42 +00:00
Jan Steinke
be5259f298 internal/lsp: use x/xerrors to create new errors
This relates to https://github.com/golang/go/issues/31374 and should switch all instances within `gopls` to use `x/errors` instead of `fmt` to create new errors.

Change-Id: I18339b75d12418d852e0dcc2ba0ed6c2970783b3
GitHub-Last-Rev: f4a55d9b79e7458ef1f1e06cb5eabbabd884f321
GitHub-Pull-Request: golang/tools#108
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179880
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-08-06 19:46:56 +00:00
Rebecca Stambler
982211fce4 internal/lsp: support single-line hover for LSP clients like Vim
Fixes golang/go#32561

Change-Id: I4399be3cfe745b85a23a82a183277e290ef2a3d8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/188981
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-08-06 19:08:13 +00:00
Rebecca Stambler
2756c524cc internal/lsp: format files that parse in packages with parse errors
Updates golang/go#31291

Change-Id: Ibbd0b6cef9b9ec588c8a2e0c5e7ee6e3512b8a22
Reviewed-on: https://go-review.googlesource.com/c/tools/+/188767
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2019-08-05 16:54:05 +00:00
Suzy Mueller
5f95ed5921 internal/imports, internal/lsp: quick fix import errors
Get quick fixes for the diagnostics related to import errors. These
fixes add, remove, or rename exactly one import.

This change exposes the individual fixes found by the imports package,
and then applies each of them separately to the source.  Since applying each
fix requires a new ast anyway, we pass in the source to be parsed each time.

Change-Id: Ibcbfa703d21b6983d774d2010716da8c25525d4f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/188059
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-08-01 20:53:47 +00:00
Ian Cottrell
c001e47e7f internal/lsp: extra telemetry tagging of files and packages
Change-Id: Ia9a8fb5dcfb74e86b9366849810dd3edc1f898dd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186918
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-31 19:44:43 +00:00
Michael Matloob
ff9f140924 internal/lsp/source: fix renaming of SuggestedFixes in experimental file
Change-Id: I4a20ef09c565da39ed49f25d85133cd388c2bf05
Reviewed-on: https://go-review.googlesource.com/c/tools/+/187820
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-29 09:26:21 +00:00
Suzy Mueller
db2fa46ec3 internal/lsp: compare mod file versions used in imports
The results of running 'go list -m' are only valid as long as the
current module and the modules in its replace directives do not
change their go.mod files. Store the 'go.mod' versions that are
used in the imports call, and reinitialize the module resolver if
they change.

Change-Id: Idb73c92b9e4dc243a276885e5333fafd2315134d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186597
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-27 17:31:35 +00:00
Suzy Mueller
1bd56024c6 internal/lsp: format files in packages with errors
Packages with errors may still contain files that can be formatted.
Try to format the source of the files in packages that have errors.
This change will still not format files with parse errors.

Updates golang/go#31291

Change-Id: Ia5168d7908948d201eac7f2ee28534022a2d4eb0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/187757
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-26 23:07:22 +00:00
Suzy Mueller
82a3ea8a50 internal/imports: save scanned module cache results
Save the packages found when scanning of the module cache.
The computed package may have a different import path due
to replace directives, so this needs to be updated
when the moduleResolver is initialized again.

Change-Id: Ib575fcc59b814ff263b431362df3698839a282f6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186301
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-07-18 20:03:17 +00:00
Ian Cottrell
7caf8110c9 internal/lsp: purge the remains of the xlog system now it is not used
Change-Id: Iad8f037de88c2657734b8a1b5c73fc708d3b5924
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186198
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-18 19:11:56 +00:00
Ian Cottrell
73497f0562 internal/lsp: convert logging calls
Change-Id: I09ee44d0121b7ced001b8195f9fa81b5225cb0c7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186197
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-18 19:03:12 +00:00
Rebecca Stambler
e98af23098 go/packages: add debug logging via the packages.Config
This change adds a Logf field to the packages.Config.

Change-Id: I144a9a1e1181585bbe621898c4a3e6a007a38322
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185993
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-07-16 22:11:50 +00:00
Suzy Mueller
fdb8f0bb4e internal/lsp: cache the imports ProcessEnv across imports calls
The imports ProcessEnv contains cached module and filesystem state. This change
allows gopls to use the same ProcessEnv and resolver across multiple calls to the
internal/imports library.

A ProcessEnv belongs to a view, because the cached module state depends
on the module that is open in the workspace.

Since we do not yet track whether the 'go.mod' file has changed, we
conservatively reset the cached state in the module resolver before
every call to imports.Process.

Change-Id: I27c8e212cb0b477ff425d5ed98a544b27b7d92ee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184921
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-07-16 21:50:18 +00:00
Rebecca Stambler
b667c4c58e internal/lsp: cache the *ast.File and *token.File on the package
This change removes the need for the ast and token fields on the *goFile
object. We switch to using source.ParseGoHandles on the package, which
means that we can easily access both the AST and token via the package,
which is already cached.

Change-Id: I5f78bbe09362f4d95eb15556617bdbd809a7a55d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185878
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-16 19:44:59 +00:00
Rebecca Stambler
919acb9f1f internal/lsp: add continue to source_test
Noticed this because I was accidentally running these tests with Go
1.11.

Change-Id: Ic35d71bd1da9078b4bde6aa2ed62d54a8b95b0e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186298
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2019-07-16 15:00:14 +00:00
Suzy Mueller
a0f5e6c5c2 internal/lsp: sort rename results
We recommend that gopls integrators apply the []TextEdit responses in
reverse order to get a correct resulting document. This strategy works
when the response is already sorted. Have gopls return sorted []TextEdit
for each file.

Fixes golang/go#33123

Change-Id: Ib570881c9623695d2ae3194fa8a97b0a681a3250
Reviewed-on: https://go-review.googlesource.com/c/tools/+/186258
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-15 22:13:26 +00:00
Ian Cottrell
565492930f internal/lsp: remove the non context xlog path
And purge the loggers from the view and session.

Change-Id: I262958f340e9a5ac9cc9b3db9e9910381e457478
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185989
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-15 03:45:47 +00:00
Ian Cottrell
1b7e409d2c internal/lsp: convert all logging calls to the context version
Change-Id: I20e3acee4272f05a9f31a7bb4219fc2fe751e6b3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185988
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-15 03:44:59 +00:00
Ian Cottrell
c8ecc7589e interal/lsp: add context based version of xlog
this is a temporary migration solution

Change-Id: Idb6542298dff85a0926aae761f6317ea155293db
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185987
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-15 03:44:47 +00:00
Rebecca Stambler
128c804424 internal/lsp: handle language ID in didOpen calls
This change merely modifies session.DidOpen to accept the document's
language ID. It does not actually add any handling of the language ID.

Change-Id: I2582ae307d1ca062f37b4683907cdbcfdfc61809
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184160
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-07-12 19:25:23 +00:00
Ian Cottrell
75aaabac35 internal/lsp: reduce trace package to minimal StartSpan for now
also change the return type to be and end function and not an incomplete span

Change-Id: Icd99d93ac98a0f8088f33e905cf1ee3fe410c024
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185349
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-11 17:25:55 +00:00
Henry Wong
01b81f4f93 internal/lsp: support hover for *ast.ImportSpec
Since 'IdentifierInfo' doesn't contain ast node of import spec,
gopls will construct an empty string under plaintext mode and
'```go\n\n```' under markdown mode for *ast.ImportSpec. For now,
the hovering result of import spec is the corresponding node
format.

Fixes golang/go#33000

Change-Id: I4c25782ddb5bcc557ace82f46d480316b0b90509
GitHub-Last-Rev: 150728f401c5f9b161b557584ad3250f46e50869
GitHub-Pull-Request: golang/tools#134
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185357
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-07-11 17:06:56 +00:00
Ian Cottrell
5f9351755f internal/lsp: stop making background contexts everywhere
For all uses inside the lsp we use the detatch logic instead
For tests we build it in the test harness instead
This is in preparation for things on the context becomming important

Change-Id: I7e6910e0d3581b82abbeeb09f9c22a99efb73142
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185677
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-11 16:38:52 +00:00
Suzy Mueller
7b25e351ac internal/lsp: rename identifiers in test packages
Support renaming of identifiers in test packages. The packages for
all of the references must be checked and the changes need to be
deduped, since both a package and its test package contain some of the
same files.

Fixes golang/go#32974

Change-Id: Ie51e19716faae77ce7e5254eeb3956faa42c2a09
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185277
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-09 21:17:00 +00:00
Rebecca Stambler
4f9eeaf1bf internal/lsp: add documentation to completion items
This change adds documentation to the completion items. This normally
should be done in completionItem/resolve, since it takes more time to
compute documentation. However, I am not sure if that latency incurred
by pre-computing documentation is actually significantly more than the
latency incurred by an extra call to 'completionItem/resolve'. This
needs to be investigated, so we begin by just precomputing all of the
documentation for each item.

Updates golang/go#29151

Change-Id: I148664d271cf3f1d089c1a871901e3ee404ffbe8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184721
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-09 19:19:00 +00:00
Suzy Mueller
e491332ed8 internal/lsp: compare names when finding references
Objects for builtin types all have position token.NoPos. We do
not want all objects that have position token.NoPos to be matched
when we are looking for references for this object, so we need to
compare the names of the objects as well.

Fixes golang/go#32991

Change-Id: I67e7aba9909ebcbb246203ea5c572debf996c792
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185247
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-09 18:45:27 +00:00
Suzy Mueller
07655f7ec7 internal/lsp: return an error when renaming a builtin
Return an error when attempting to rename a builtin identifier.

Fixes golang/go#32992

Change-Id: I7fb0f9cc9499e5afdfb14805c49c820e4da3b601
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185246
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-09 18:23:51 +00:00
Suzy Mueller
c93f28baaa internal/lsp: check no errs for assignability rename
The satisfy package has a precondition for Finder.Find that requires
that the package has no type errors. If this is a check that we would
perform, give an error and do not rename.

Fixes golang/go#32882

Change-Id: Id44b451bf86ff883fd78a6306f2b2565ad3bdeb9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184857
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-08 20:09:55 +00:00
Rebecca Stambler
2214986f16 internal/lsp/fuzzy: add fuzzy matching library
This change uses a fuzzy matching library to score completion results.

Updates golang/go#32754

Change-Id: Ia7771b33534de393a865443e05c0fcbf1e9a969b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184441
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-03 21:24:19 +00:00
Rebecca Stambler
719fbf7c21 internal/lsp: move function signature into detail instead of label
Fixes golang/go#32414

Change-Id: If08e655d7a0e29b0865c13d8377e98be01cf24c5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-03 21:07:46 +00:00
Ian Cottrell
4457e4cfd4 internal/lsp: add some trace spans to important functions
This uses the new opencensus compatability layer to add telementry to some of
the functions in the lsp, in order to allow us to understand their costs and
call patterns.

Change-Id: I7df820cd4eace7a4840ac6397d5df402369bf0a7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183419
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-03 19:14:57 +00:00
Suzy Mueller
abb7e64e89 internal/lsp: include declaration for references
A client can specify "IncludeDeclaration" in its ReferenceParams.
When they do so, we want to include the declaration, even if it was not
in the scope we searched for references.

Additionally, we also return the location of the declaration first in
the result array when it is included in the results.

Updates golang/go#32572

Change-Id: I12837cd98102ee8d531f0f4bac2fb7bded2564c0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184723
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-03 18:39:24 +00:00
Rebecca Stambler
1c78e26233 internal/lsp: add configuration for hover levels
Instead of defaulting to a one sentence synopsis for documentation on
hover, allow the user to configure the amount of documentation they want
to see. Right now, the options are none, some (using go/doc.Synopsis),
or all. We should add a 4th, single-line, mode, which will allow clients
like vim-go to stop stripping off documentation on hover.

Updates golang/go#32561

Change-Id: I529242da84b794636984d5ef2918b7252886f0ef
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184797
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-03 17:17:32 +00:00
Muir Manders
9d59f9e855 internal/lsp: improve completion support for untyped constants
Add some extra smarts when evaluating untyped constants as completion
candidates. Previously we called types.Default() on the expected type
and candidate type, but this loses the untypedness of an untyped
constant which prevents it from being assignable to any type or named
type other than the untyped constant's default type.

Note that the added logic does not take into account the untyped
constant's value, so you will still get some false positive
completions (e.g. suggesting an untyped negative integer constant when
only a uint would do). Unfortunately go/types doesn't provide a way of
answering the question "is this *types.Const assignable to this
types.Type" since types.AssignableTo only considers a constant's type,
not its value.

Change-Id: If7075642e928f712b127256ae7706a5190e2f42c
GitHub-Last-Rev: 124d2f05b0aec09c9d7004d9da0d900524185b92
GitHub-Pull-Request: golang/tools#128
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184477
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2019-07-03 16:30:32 +00:00
Rebecca Stambler
7e72c71c50 internal/lsp: hide signature help in function literals
Often anonymous functions can be passed as arguments to a function. In
these cases, it can be annoying for a user to see signature help for the
entire duration of their writing this function. This change detects if
the user is typing in a function literal and disables signature help in
that case.

Fixes golang/go#31633

Change-Id: I7166910739b6e1ec0da2ec852336136b81d13be0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184260
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2019-07-02 15:22:45 +00:00
Suzy Mueller
f80f67146e internal/lsp: support renaming import specs
Support the renaming of the imported name of a package within a file.
This case needs to be special cased because the ident may be added or
removed.

Change-Id: I333bc2b2ca5ce81c4a2afb8b10035f525dfad464
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184199
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-02 14:51:11 +00:00
Rebecca Stambler
38ae2c8f64 internal/lsp, internal/imports: use the internal goimports library
This change modifies gopls to use the internal goimports library, which
allows us to manually configure the ProcessEnv. We also add a logger to
the ProcessEnv to allow this change not to conflict with gopls's logging
mechanism.

Fixes golang/go#32585

Change-Id: Ic9aae69c7cfbc9b1f2e66aa8d812175dbc0065ce
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184198
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-07-01 19:45:22 +00:00
Rebecca Stambler
e47c3d98c3 internal/lsp: check file content on disk when opening
As per discussion on golang/go#32810, to avoid the `go list` storm caused by many
files being opened, we check if the file content opened is equivalent to
the content on disk. If so, we mark this file as "on disk" so that we
don't send it as an overlay to go/packages.

Updates golang/go#32810

Change-Id: I0a520cf91bbe933c9afb76d0842f5556ac4e5b28
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184257
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-07-01 19:36:37 +00:00
Suzy Mueller
58bb5bbe30 internal/lsp: find references in test packages
Find references to identifiers in both a package and its test package.

Change-Id: I9d9da4aa37c36c448336aed044df79cfd1c903f1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183990
Run-TryBot: Suzy Mueller <suzmue@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-07-01 19:17:42 +00:00
Muir Manders
30f1cf78d7 internal/lsp: improve completion support for type conversions
Now when completing in code like:

foo := int64(<>)

we prefer candidates whose type is convertible to int64.

Change-Id: Iadc6cdc7de097ac30d8807d6f5aa21d83f89d756
GitHub-Last-Rev: a86dd72496ba752a1f20877c0594ec6a0ed8160e
GitHub-Pull-Request: golang/tools#127
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183941
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-07-01 17:57:14 +00:00
Rebecca Stambler
970b2b065d internal/lsp: fix bug where gopls hangs on manually typed imports
Fixes golang/go#32797

Change-Id: I0d2975561035c3ac5f5cd460ecdee452c2f6a17f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184258
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2019-07-01 17:55:09 +00:00
Rebecca Stambler
fb37f6ba82 internal/lsp: fix deadlock in type-checking
There was a situation where we were trying to re-acquire a lock that was
already held. This change solves this issue.

Change-Id: I97cf6bad7e7c219a267e3ca5d174a2573f70ebe2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184217
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
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2019-06-28 22:25:27 +00:00
Suzy Mueller
6cfa55603c internal/lsp: check ident exists for comment rename
The identifier in a reference is used to check for a doc comment.
Implicits do not have an ident, so do not use that to look for a doc
comment.

Also set the context.Context for the renamer.

Change-Id: I085d9e6c11d919222592dcb6fb30982eeb0fc7cd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184042
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-28 17:52:03 +00:00
Rebecca Stambler
212fb13d59 internal/lsp: match completions case-insensitively
Change-Id: I31f2ea338ae3e2ec2837a444705f990e140ebc77
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184159
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-28 03:43:36 +00:00
Muir Manders
4298585011 internal/lsp: provide deep completion candidates
Deep completion refers to searching through an object's fields and
methods for more completion candidates. For example:

func wantsInt(int) { }
var s struct { i int }
wantsInt(<>)

Will now give a candidate for "s.i" since its type matches the
expected type.

We limit to three deep completion results. In some cases there are
many useless deep completion matches. Showing too many options defeats
the purpose of "smart" completions. We also lower a completion item's
score according to its depth so that we favor shallower options. For
now we do not continue searching past function calls to limit our
search scope. In other words, we are not able to suggest results with
any chained fields/methods after the first method call.

Deep completions are behind the "useDeepCompletions" LSP config flag
for now.

Change-Id: I1b888c82e5c4b882f9718177ce07811e2bccbf22
GitHub-Last-Rev: 26522363730036e0b382a7bcd10aa1ed825f6866
GitHub-Pull-Request: golang/tools#100
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177622
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-27 18:58:03 +00:00
Edward Muller
1a55b1581c internal/lsp/source: move the common path to the left
As per the following guidance: "Try to keep the normal code path at a minimal indentation"

I know this is normally applied to error handling, but the same logic about improving readability applies here too.

Change-Id: Ib20dae9975e94b40fb6ff7049782375b18ef59ba

Change-Id: Ib20dae9975e94b40fb6ff7049782375b18ef59ba
GitHub-Last-Rev: 97919272de76ec15845556e032985c5969a277fa
GitHub-Pull-Request: golang/tools#125
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183698
Reviewed-by: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
2019-06-27 17:56:40 +00:00
Muir Manders
5d636af2a9 internal/lsp: improve completion support for type assertions
In type assertion expressions and type switch clauses we now infer the
type from which candidates must be assertable. For example in:

var foo io.Writer
bar := foo.(<>)

When suggesting concrete types we will prefer types that actually
implement io.Writer.

I also added support for the "*" type name modifier. Using the above
example:

bar := foo.(*<>)

we will prefer type T such that *T implements io.Writer.

Change-Id: Ib483bf5e7b339338adc1bfb17b34bc4050d05ad1
GitHub-Last-Rev: 965b028cc00b036019bfdc97561d9e09b7b912ec
GitHub-Pull-Request: golang/tools#123
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183137
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-26 23:33:08 +00:00
Michael Matloob
e8e6be9f45 internal/lsp: plumb suggested fixes through the LSP
Change-Id: Ia9e077e6b9cf8a817103d90481768ae99409c574
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183264
Run-TryBot: Michael Matloob <matloob@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-26 21:02:18 +00:00
Edward Muller
d1f656545b internal/lsp/source: don't panic compiling regex
This package is basically a library (even though it's internal) and
it's generally considered a bad practice for libraries to panic, so
don't.

Change-Id: I37d9d73ae48ececc6b31436f1076e1f85213f129

Change-Id: I37d9d73ae48ececc6b31436f1076e1f85213f129
GitHub-Last-Rev: 453b538e53e48889171d31829af3304409f9a8bc
GitHub-Pull-Request: golang/tools#124
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183680
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2019-06-26 18:09:17 +00:00
Rebecca Stambler
3cbd95df51 internal/lsp: support a file belonging to multiple packages
This change adds supports for a package belonging to multiple files.
It requires additional packages.Loads for all of the packages to which a
file belongs (for example, if a non-test file also belongs to a package's
test variant).

For now, we re-run go/packages.Load for each file we open, regardless of
whether or not we already know about it.

This solves the issue of packages randomly belonging to a test or not.
Follow-up work needs to be done to support multiple packages in
references, rename, and diagnostics.

Fixes golang/go#32791
Fixes golang/go#30100

Change-Id: I0a5870a05825fc16cc46d405ef50c775094b0fbb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183628
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-26 17:56:19 +00:00
Rebecca Stambler
252024b829 internal/lsp: separate refactorings out of memoization CL
This change just separates minor changes made along the course of the
memoization CL out into their own change. This will clean up the diffs
in the memoization CL.

Change-Id: I7d59e05ba6472af5f1bf516b1e5b879a5815b9a5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183250
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-25 16:04:30 +00:00
Suzy Mueller
70d37148ca internal/lsp: update doc comments on rename
Replace doc comment text for the declaration of an identifier with the
new name.

This implementation is taken from golang.org/x/tools/refactor/rename.

Change-Id: Id1b80fad456646a46c8ae2caa4e8febf05aaf798
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183261
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-24 18:02:13 +00:00
Suzy Mueller
1fa568393b internal/lsp: check for conflicts on rename
Before renaming a variable, check the package to make sure that this
renaming would not result in a conflict that could break the program.

All of the implementation is taken from "refactor/rename" with the
dependency on "go/loader" removed.

Change-Id: Ib0782ec8f247a6df1750f2c8213f69186699ce1a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183257
Run-TryBot: Suzy Mueller <suzmue@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-20 19:17:50 +00:00
Muir Manders
431033348d internal/lsp: fix function value completions
Previously we would always expand *types.Func completion candidates to
function calls, even if the expected type matched the function itself,
not its return value. Now we check the function itself before we check
its return value. This fixes cases like this:

func foo() int { return 0 }
var f func() int
f = <foo> // now completes to "foo" instead of "foo()"

Also, *types.Var function values were never getting expanded to calls.
I fixed the completion formatting to know that both *types.Func
and *types.Var objects might need to be invoked in the completion
item. This fixes cases like this:

foo := func() int { return 0 }
var i int
i = <foo()> // now completes to "foo()" instead of "foo"

Change-Id: I8d0e9e2774f92866a3dd881092c13019fb3f3fd5
GitHub-Last-Rev: 7442bc84b5bbb86296289bbc745ec56a5f89d901
GitHub-Pull-Request: golang/tools#122
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182879
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-20 15:43:39 +00:00
Suzy Mueller
4adf7a708c internal/lsp: add identifier renaming
This change provides support to rename identifiers within a single
package.

The renaming is performed by finding all references to an identifier,
and then creating text edits to replace the existing text with the
new identifier.

Editing an import spec is not supported.

Fixes #27571

Change-Id: I0881b65a1b3c72d7c53d7d6ab1ea386160dc00fb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182585
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-19 21:54:42 +00:00
Muir Manders
22e91af008 internal/lsp: apply type modifiers to completion candidate
In situations like:

var buf bytes.Buffer
var w io.Writer = &b<>

if we want to complete to "buf" properly we need to apply the "&" type
modifier to buf's type of bytes.Buffer to see that it is assignable
to type io.Writer. Previously we applied type modifiers in reverse to
the "expected" type (io.Writer in this case), but that is obviously
incorrect in this situation since it is nonsensical to
dereference (the reverse of "&") io.Writer.

Change-Id: Ib7ab5761f625217e023286384c23b8c60e677aac
GitHub-Last-Rev: 4be528f2572c9c987334552e3f8a31d4eddce81a
GitHub-Pull-Request: golang/tools#121
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182598
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-19 20:27:14 +00:00
Suzy Mueller
b76e30ffa0 internal/lsp: fix references for type switch vars
Implicit local variables for type switches do not appear in the Uses
map and do not have objects associated with them.  This change
associates all of the different types objects for the same local type
switch declaration with one another in the declaration.

The identifier for the implicit local variable does not have a type but
does have declaration objects.

Find references for type switch vars will return references to all the
identifiers in all of the case clauses and the declaration.

Fixes golang/go#32584

Change-Id: I5563a2a48d31ca615c1e4e73b46eabca0f5dd72a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182462
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-19 18:18:01 +00:00
Michael Matloob
8b2b8cf54a internal/lsp: add a field on the package to store diagnostics
So we can surface their code actions later.

Change-Id: I735e5d025a1250861d49db227f5a79453f599140
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182837
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-06-19 16:20:43 +00:00
Rebecca Stambler
fdf1049a94 internal/lsp: determine diagnostics to show per-file, not per-package
Previously, if any one file in a package had a parse error, we would not
send type errors for any of the other files. Now we make this decision
per-file, so that, even if a file has parse errors, type errors in the
other files will be shown.

Fixes golang/go#32596

Change-Id: I086c04f0ec37cd1b33845153328faf368232d834
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182466
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-18 16:30:18 +00:00
Muir Manders
da514acc47 internal/lsp: suggest completions that satisfy interfaces
When checking if a completion candidate matches the expected type at
the cursor position, we now use types.AssignableTo instead of
types.Identical. This properly handles cases like using a concrete
type to satisfy an interface type.

Calling AssignableTo triggered some crashes related to the fake
"resolved" types we create. Their underlying type was nil, which is
not allowed. We now set their underlying type to the invalid type.

I've also rearranged things so expected type information lives in a
dedicated typeInference struct. For now there is no new information added,
but in subsequent commits there will be more metadata about the
expected type.

Change-Id: I14e537c548960c30e444cf512a4413d75bb3ee45
GitHub-Last-Rev: 7e64ebe32938562648938d7a480195d954b018f2
GitHub-Pull-Request: golang/tools#116
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182358
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-17 19:08:20 +00:00
Rebecca Stambler
9a3b5d688f internal/lsp: parse filenames only out of go list errors
This changes the packageErrorSpan function into the listErrorSpan.
Previously, this was causing the gopls-generated errors to get parsed,
which would result in attempts to send diagnostics for invalid filenames.

Fixes golang/go#32603

Change-Id: I7a54ed8884b78beb3f894598f18a24ed232f7412
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182460
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-14 19:27:58 +00:00
Rebecca Stambler
61e0f78580 internal/lsp: use the memoize package to get *token.Files
This change does not actually use the token handle for GetToken right
now, but implements the approach for memoizing *token.Files.

Change-Id: I75919f4e97abd6893b202c021adecd2c9dbfc2be
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182277
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-14 19:20:18 +00:00
Ian Cottrell
1edc8e83c8 internal/lsp: update analysis runner for new features
This adds support for the AllObjectFacts and AllPackageFacts features that were
added to the analysis library.
It also moves the list of analyzers to an exported global so it can be added to
easily.

Change-Id: Ibbe81b17b190d04a0e49510c23558430bc03ca70
Reviewed-on: https://go-review.googlesource.com/c/tools/+/182177
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
2019-06-14 15:20:01 +00:00
Rebecca Stambler
59534d075a internal/lsp: use ids instead of package paths as map keys
This adds an IDs map to the metadata cache, which maps package paths to
IDs. This is only ever used by the Import function in the type checker.

Change-Id: I8677d9439895bc6cbca5072e3fa9fddad4e165d5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/181683
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-12 18:00:59 +00:00
Ian Cottrell
346706fc3d internal/lsp: memoize all the parsing
Change-Id: Ic7864a564f88b3fe0a421bb825b01d750610dee9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/181119
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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2019-06-11 20:12:58 +00:00
Ian Cottrell
e88138204b internal/span: change URI.Filename so it just returns the filename
We panic if the uri was not a valid file uri instead
They always are a valid file URI, and we would fail miserably to cope if they were
not anyway, and there are lots of places where we need to be able to get the filename
and don't want to cope with an error that cannot occur.
If we ever have not file uri's, you will have to check if it is a file before calling
.Filename, which seems reasonable anyway.

Change-Id: Ifb26a165bd43c2d310378314550b5749b09e2ebd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/181017
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-10 21:39:43 +00:00
Rebecca Stambler
fe937a7521 internal/lsp: allow fine-grained control over vet checks
This change adds an "experimentalDisabledAnalyses" configuration
to the "gopls" configuration. A user can specify a list of excluded
analyses by analyzer name.

Fixes golang/go#31717

Change-Id: I4b162fcd61ecfcef5c926bd0e96f182748a7721d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179920
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2019-06-10 19:43:59 +00:00
Suzy Mueller
bca362e842 internal/lsp: add find all references
This change implements the find all references feature by finding all of
the uses and definitions of the identifier within the current package.

Testing for references is done using "refs" in the testdata files and
marking the references in the package.

Change-Id: Ieb44b68608e940df5f65c3052eb9ec974f6fae6c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/181122
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2019-06-10 19:06:22 +00:00
Rebecca Stambler
68211a626c internal/lsp: fix some issues with trimming ASTs
This change correctly invalidates the cache when we
have to go from a trimmed to untrimmed AST.

The "ignoreFuncBodies" behavior is still disabled due to a racy test.

Updates golang/go#30309

Change-Id: I6b89d1d2140d77517616cb3956721a157c25ab71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/180857
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-06-07 20:08:10 +00:00
Rebecca Stambler
0139d5756a internal/lsp: attach documentation to signature help
This change refactors hover to generate documentation for just the
declaration portion of an identifier.

Updates golang/go#29151

Change-Id: I16d48a99b56c36132e49cc87e2736f85c88ed14a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/180657
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-06 17:46:28 +00:00
Ian Cottrell
4d9ae51c24 internal/lsp: remove source.FileContent
On FileHandle Read now just returns the data hash and error
This makes it more obvious that you should handle the error, rather than hiding
it all in a struct.
We also change the way we get and return content, the main source.File
constructs now hold a FileHandle that then updates on invalidation

Change-Id: I20be1b995355e948244342130eafec056df10081
Reviewed-on: https://go-review.googlesource.com/c/tools/+/180417
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-06 05:02:23 +00:00
Ian Cottrell
2c3de6a5ae internal/lsp: change file system to allow lazy reads
We split aquiring a "handle" from reading a files contents so that we can do the
former eagerly and the latter lazily.
We also "version" the handles so that the same file at different versions is a
different handle.

Change-Id: I06cc346d4b4c77d784aa454702c54689f2f177e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179917
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-06-06 01:09:34 +00:00
Rebecca Stambler
8aaa1484dc internal/lsp: add some basic tests for imports
This change adds a few simple tests for the goimports behavior of gopls.
There are still missing cases for non-standard library, but this is a
good start.

Change-Id: I2f9bc2cc876dcabf81413384b83fa3508517adf0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179918
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2019-06-03 23:13:51 +00:00
Koichi Shiraishi
70bf279967 internal/lsp: support build flags on processConfig
Add 'buildFlags' config to processConfig and pass that value to packages.Config.
We can avoid incorrect diagnostics such as if current source codes require any build tags.

Change-Id: Id191469ec75eedaa82b75ec4fdec084fa78c2c5d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178782
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2019-06-03 21:18:25 +00:00
Rebecca Stambler
b012c19798 internal/lsp: trim ASTs for which we do not require function bodies
This change trims the function bodies from the ASTs of files belonging to
dependency packages. In these cases, we do not necessarily need full
file ASTs, so it's not necessary to store the function bodies in memory.

This change will reduce memory usage. However, it will also slow down
the case of a user opening a file in a dependency package, as we will
have to re-typecheck the file to get the full AST. Hopefully, this
increase in latency will not be significant, as we will only need to
re-typecheck a single package (all the dependencies should be cached).

Updates golang/go#30309

Change-Id: I7871ae44499c851d1097087bd9d3567bb27db691
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178719
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-03 19:34:55 +00:00
Rebecca Stambler
178e83bc9d internal/lsp: build the builtin package preemptively
This change fixes a regression introduced by the building the builtin
package on demand. Although this change increases the startup tasks of
gopls, it is necessary to ensure that we ignore diagnostics from
builtin.go.

Change-Id: I897e747a273056d70cecba486a74c75a736d8f80
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179921
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-03 18:19:26 +00:00
Michael Matloob
2b03ca6e44 go/analysis: add an End field to Diagnostic
This will allow diagnostics to denote the range they apply to.
The ranges are now interpreted using the internal/span library.

This is primarily intended for the benefit of the LSP, which will
be able to (in future CLs) more accurately highlight the part
of the code a diagnostic applies to.

Change-Id: Ic35cec2b21060c9dc6a8f5ebb7faa62d81a07435
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179237
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-30 17:14:27 +00:00
Rebecca Stambler
12d7342421 internal/lsp: refactor to separate pieces of type-checking
Change-Id: Idab49286e59803e4ae0f749eb9f2990b611ea689
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179439
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-30 04:37:10 +00:00
Rebecca Stambler
08bd53a4b4 internal/lsp: run analyses despite some errors
Updates golang/go#32247

Change-Id: Id474e62ea70676c782eb49dddebd64d7f274d2cf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179218
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-28 20:25:02 +00:00
Rebecca Stambler
3d17549cdc internal/lsp: add modfile, sumfile structs, require Go files for diagnostics
This change adds a stub modFile struct for use in the future. It also
moves the singleDiagnostic function out into the lsp package, so that
the source package does not make decisions about what to show to the
user as a diagnostic.

Fixes golang/go#32221

Change-Id: I577c66fcd3c1daadaa221b52ff36bfa0fe07fb53
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178681
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-24 21:02:28 +00:00
Ian Cottrell
75713da896 internal/lsp: add a file system abstraction
Change-Id: Ie42835b835ed22fddbba187ab10d8c31019ff008
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178097
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-24 13:48:47 +00:00
Rebecca Stambler
38d8bcfa38 internal/lsp: don't show diagnostics for mod files
The Go file changes didn't actually check the file extensions for the
files the Go extension is receiving. This error was not noticed because
the VSCode extension doesn't yet actually send mod files to gopls yet,
but it will in its next release.

Fixes golang/go#32178

Change-Id: Ia04d0a92ce7df13fcf4c601421bc000d69855f6d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178679
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-23 17:46:34 +00:00
Ian Cottrell
7927dbab1b internal/lsp: build the packages config on demand from proper configuration
This moves the fileset down to the base cache, the overlays down to the session
and stores the environment on the view.
packages.Config is no longer part of any public API, and the config is build on
demand by combining all the layers of cache.
Also added some documentation to the main source pacakge interfaces.

Change-Id: I058092ad2275d433864d1f58576fc55e194607a6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178017
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-21 17:12:43 +00:00
Muir Manders
eda2c2f1ae internal/lsp: fix completion insertion with non-identifier suffix
Completions like "foo.Bar(baz.<>)" were replacing one too many
characters resulting in "foo.Bar(baz.Qux()". This is because the go
parser adds a phantom "_" identifier when parsing "foo.". We thought
the "_" was really there, so we were issuing text edits to replace
it. Fix by ignoring "_" selectors when the cursor is positioned to
their left.

Fixes microsoft/vscode-go#2525

Change-Id: I1233a9d6275e2a79b666ca0230862238160b4aab
GitHub-Last-Rev: de9a3f00187b1b9bfcc4e497461f4602ae6f8923
GitHub-Pull-Request: golang/tools#104
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178217
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-05-20 21:53:15 +00:00
Rebecca Stambler
7e7c6e5214 internal/lsp: add nil checks for ASTs and token
Fixes golang/go#32120
Updates golang/go#32132

Change-Id: Ib4bb8a4818be7dec468c46b72afc3dd57b35f155
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178158
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2019-05-20 20:09:54 +00:00
Rebecca Stambler
9558fe4a78 internal/lsp: update column mapper with content on incremental changes
Fixes golang/go#32114

Change-Id: If2ffade3d8d1e026e3b0aa7f2c9db4dc46d7c8b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178157
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
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2019-05-20 19:04:59 +00:00
Evan Digby
d88f79806b internal/lsp: fix swallowed package errors
If a package has an error that makes it completely unparseable, such as containing a .go file with no "package" statement, the error was previously unreported. Such errors would manifest as other errors.

Fixes golang/go#31712

Change-Id: I11b8d0e2e4d64b03fbcb4c35e7f0b02fccc83fad
GitHub-Last-Rev: 1581cbe36c269dd964f0b9226dbd63b1650c2a5b
GitHub-Pull-Request: golang/tools#102
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177605
Run-TryBot: Ian Cottrell <iancottrell@google.com>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-17 18:33:31 +00:00
Muir Manders
f217c98fae internal/lsp: fix completion insertion
The insertion range for completion items was not right. The range's
end was 1 before the start. Fix by taking into account the length of
the prefix when generating the range start and end.

Now instead of a "prefix", we track the completion's
"surrounding". This is basically the start and end of the abutting
identifier along with the cursor position. When we insert the
completion text, we overwrite the entire identifier, not just the
prefix. This fixes postfix completion like completing "foo.<>Bar" to
"foo.BarBaz".

Fixes golang/go#32078
Fixes golang/go#32057

Change-Id: I9d065a413ff9a6e20ae662ff93ad0092c2007c1d
GitHub-Last-Rev: af5ab4d60566bf0589d9a712c80d75280178cba9
GitHub-Pull-Request: golang/tools#103
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177757
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-17 18:32:58 +00:00
Rebecca Stambler
bffc5affc6 internal/lsp: support definitions and hover for builtins
This change adds support for definitions and hover for builtin types and
functions. It also includes some small (non-logic) changes to the import
spec definition function.

Additionally, there are some resulting changes in diagnostics to ignore
the builtin file but also use it for definitions (Ian, you were right
with your comment on my earlier review...).

Fixes golang/go#31696

Change-Id: I52d43d010a5ca8359b539c33e40782877eb730d0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177517
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-17 00:35:10 +00:00
Ian Cottrell
b9584148ef internal/lsp: add structured layers to the cache
This is primarily to separate the levels because they have different cache
lifetimes and sharability.
This will allow us to share results between views and even between servers.

Change-Id: I280ca19d17a6ea8a15e48637d4445e2b6cf04769
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177518
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-16 21:30:38 +00:00
Rebecca Stambler
abbb706b23 internal/lsp: enable enhanced hover by default
This change removes the explicit configuration for improved
documentation on hover. We use a comment's synopsis rather than the full
comment.

However, we also add a "noDocsOnHover" setting that is used by the cmd
tests. Ultimately, no one should use this setting and we should remove
it. We leave it temporarily because the cmd tests still need work.

Change-Id: I5488eca96a729ed7edad8f59b95af163903740d6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/174378
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-16 17:30:22 +00:00
Muir Manders
e5f21acdc3 internal/lsp: handle more expected type cases
Calculate expected type in the following cases:

- switch case statements
- index expressions (e.g. []int{}[<>] or map[string]int{}[<>])
- slice expressions (e.g. []int{}[1:<>])
- channel send statements
- channel receive expression

We now also prefer type names in type switch clauses and type asserts.

Change-Id: Iff8c317a9116868b36701d931c802d9147f962d8
GitHub-Last-Rev: e039a45aebe1c6aa9b2011cad67ddaa5e4ed4d77
GitHub-Pull-Request: golang/tools#97
Reviewed-on: https://go-review.googlesource.com/c/tools/+/176941
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-16 16:26:11 +00:00
Ian Cottrell
4f9510c6a1 internal/lsp: prepare for non go files
This abstracts out the concrete file type so that we can support non go files.

Change-Id: I7447daa2ce076ec2867de9e59a0dedfe1a0553f5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/175217
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-15 23:59:46 +00:00
Ian Cottrell
0e55654012 internal/lsp: add shutdown handling
We correcly cancel all background tasks and drop all active views when
the server is asked to shut down now.
This was mostly to support the command line being able to exit cleanly

Change-Id: Iff9f5ab51572aad5e3245dc01aa87b00dcd47963
Reviewed-on: https://go-review.googlesource.com/c/tools/+/174940
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-15 23:16:32 +00:00
Rebecca Stambler
7c3f65130f internal/lsp: remove constant value from label and add tests
Fixes golang/go#29816
Fixes golang/go#31923

Change-Id: I4f0ff7941a5d26994ef6bbd10346eafe31160a21
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177357
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-15 19:19:14 +00:00
Rebecca Stambler
473d3dc1d7 internal/lsp: handle additional snippet cases
This change handles the case when a function that has already been
written out is being completed.

Change-Id: I0c4e9ec9bb5a8428526f00a4e62e020bcc30f0bf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/176923
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-15 17:48:15 +00:00
Ian Cottrell
ce09bef8aa internal/lsp: reduce the api surface of the cache package
The cache now exposes only one symbol, NewView
This is preparing the cache for a re-write

Change-Id: I411c2cd7a7edc2e7c774218c6786f9fd4fcc53cb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/176924
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-15 16:36:46 +00:00
Rebecca Stambler
707862fa78 internal/lsp: use builtin package for signature help
This change uses the builtin package to derive the signature help for
builtin functions.

Updates golang/go#31696

Change-Id: I458b3a89bdf143e7018e8be7cb6a5e8c068a47c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/176922
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-15 13:46:40 +00:00
Rebecca Stambler
2196cb7019 internal/lsp: make snippets private fields
Change-Id: I35d883196c7c3b35e14b49c0f5c779a91e72ce42
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177177
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-15 03:55:09 +00:00