1
0
mirror of https://github.com/golang/go synced 2024-11-18 08:54:45 -07:00
Commit Graph

1717 Commits

Author SHA1 Message Date
Rob Findley
df83f4e7c1 internal/lsp: fix builds and tests for go1.12+
Seems we've drifted a bit from go1.12 support, mostly due to error
wrapping.

Fix this, as well as some assorted other failures.

I haven't tested 1.12 interactively.

For golang/go#39146

Change-Id: Id347ead2a13e89b76d2ae0047750e6b6b49911eb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250941
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-27 14:30:46 +00:00
Rob Findley
17fd2f27a9 internal/lsp/regtest: add a workspace symbols benchmark
It's pretty easy to add an LSP benchmark using the regtests, provided we
run the benchmark ourselves from inside the runner. Do this for
workspace symbols to start, though we should add several of these.

Also fix some error messages when setting options.

Change-Id: Iab134018edec8837e90a0a926ec2e73addf95bb3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250798
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-27 01:05:19 +00:00
Rebecca Stambler
b85e56c1dc internal/lsp/source: sort references and implementations results
We should make sure to return deterministic results for these requests.

Fixes golang/go#40904

Change-Id: If10489e3eca0e1b6a5e449de851d332f2d91ceb4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250737
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-26 22:01:59 +00:00
Danish Dua
bc8aaaa29e internal/lsp: ignore period ('.') triggered completions in comments
Period triggered completions don't provide any use in comments and in
worst case can be nuisance. LSP provides a completion context which
provides more info about what triggered a completion and hence we can
use this to ignore period triggererd completions. This will also provide
us options to deal with retriggered completions etc. better in the
future.

Change-Id: I8449aee0fe3cf5f9acf315865ac854d5c894d044
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250337
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-26 04:07:57 +00:00
Rebecca Stambler
f57a28cb8c internal/lsp/source: use space character in markdown formatting
Use space characters instead of the HTML "&nbsp;" character. VS Code and
other clients treat this character differently from a space, so it
results in different formatting. See
https://github.com/golang/go/issues/40947#issuecomment-680497904 for an
image with the difference.

Fixes golang/go#40947

Change-Id: Ia78cb3ba82dcca8303d1b5a0a6d359a3eaca837c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250697
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-26 03:44:07 +00:00
Rebecca Stambler
28d6951fb6 internal/lsp/mod: handle nil pointer exception for empty go.mod files
Fixes golang/go#41005

Change-Id: I1745c5233977d1b5603cfbb334ff087649feaa80
Reviewed-on: https://go-review.googlesource.com/c/tools/+/250657
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-26 01:43:00 +00:00
Danish Dua
e0bf2294bb internal/lsp/source: fix completion on final line of a document
Span treats an end of file as the beginning of the next line, which for a final line ending without a newline is incorrect and leads to completions being ignored. We adjust the ending in case range end is on a different line here.

Change-Id: Ic545dcb221493530b7e39d2be8eba57b69fb6597
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249706
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-25 22:56:35 +00:00
Danish Dua
b72e8bb66c internal/lsp: use prefix matcher with comment completion
Since we used to manually set surrounding for comments (instead of using
setSurrounding with an ident), the matched was never initialized and
hence we had to manually do prefix matching. We now initialize matcher
from setSurroundingForComment too.

Change-Id: I8aa735933ebba2fe493182e4245de668997ef7af
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249707
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-25 21:01:48 +00:00
Pontus Leitzler
b303f430e3 internal/analysisinternal: add anonymous structs & interfaces to
Fillstruct wasn't able to fill structs with fileds that held anonymous
structs or maps with anonymous structs/interfaces.

By adding *types.Struct and *types.Interface support in TypeExpr(),
fillstruct is now works for those as well.

Fixes golang/go#40980

Change-Id: I2a1d6d4db237800197cf14e3ad5067a0e7ab701a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249999
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-25 20:24:27 +00:00
Pontus Leitzler
c024452afb internal/lsp: don't panic if there are no suggested fixes
If an analyzer doesn't return error, and doesn't have any suggested
fixs either gopls panics. Return an empty set of edits instead.

Change-Id: I1cd812fedcbd2ddc01229f48c0cc4467ee3f0105
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249998
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-23 20:58:32 +00:00
Pontus Leitzler
307de81be3 internal/lsp: do not log failed suggested fix for fillstruct to stderr
Avoid logging to stderr as it will interfere with LSP communication.

Change-Id: Ic9ff4f3555eabb8b0b6503650df7de5ddb76ef98
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249997
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-22 20:38:24 +00:00
Rob Findley
1e23e48ab9 internal/lsp: improvements for command messages
When falling back to messages for progress reporting, don't try to
implement cancellation via ShowMessageCommand dialogs. They are an
imperfect solution, as the dialog stays open even after the command
completed. Also, among the LSP clients that don't support workDone
reporting, I suspect many also don't support ShowMessageCommand (for
example, govim), so the audience for this feature is probably quite
small.

Just remove it, and instead show a (non-cancellable) message. If clients
want cancellation, workDone progress support is the way to provide it.

Also remove a redundant message on go-generate success, and attach logs
when tests fail. Without logs on failure, I find that the test command
is not very useful. I tested a bit with very verbose test output, and
both VS Code and coc.nvim handled it gracefully.

Finally, fix a bug causing benchmarks not to be run.

Change-Id: I05422bcefc857c25cd99e643e614a0bc33870586
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249702
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-21 20:07:30 +00:00
Heschi Kreinick
3366bbee47 internal/lsp/regtest: reproduce empty xtest bug
packages.Load returns bad data for an empty xtest in GOPATH mode.

Updates golang/go#40825.

Change-Id: Ibab8dcbeafc22a71a2a4c3be0008b728c13c4c80
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249703
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-21 19:26:10 +00:00
Danish Dua
3509cdc6e9 internal/lsp: add ast fields to comment completion for declarations
* adds support for comment completion inside declarations
* improves scoring for completion results for comments
* adds comment completion support for non-exported symbols
* adds pruning for results that don't match text surrounding cursor
* tests for comment completion

Change-Id: Icb445a469cee3122fe032630bee037c7bdfe2e18
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249639
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-21 18:29:12 +00:00
Rob Findley
daa6538899 internal/lsp/source: fix panic in formatZeroValue for invalid type
formatZeroValue is currently only used when formatting return values for
statement completion. Per golang/go#40956, it must be possible to hit
this codepath with an invalid type.

In this case, the empty string seems like a reasonable value. Perhaps we
could do better, but fix the panic for now.

Fixes golang/go#40956

Change-Id: I45b559d41001c857cef34aea2a5ac4a9096fe950
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249818
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-21 17:11:49 +00:00
Muir Manders
74543c4034 internal/lsp/source: fix composite literal type name completion
Fix completion in the following cases:

    type foo struct{}

    // now we offer "&foo" instead of "foo"
    var _ *foo = fo<>{}

    struct { f *foo }{
      // now we offer "&foo" instead of "*foo"
      f: fo<>{},
    }

Composite literal type names are a bit special because they are part
of an arbitrary value expression rather than just a standalone type
name expression. In particular, they can be preceded by "&", which
affects how they relate to the surrounding context. The "&" doesn't
technically apply to the type name, but we must take it into account.

I made three changes to fix the behavior:
1. When we want to make a composite literal type name into a pointer,
   we use "&" instead of "*".
2. Record if a composite literal type is already has a "&" so we don't
   add it again.
3. Fix "var _ *foo = fo<>{}" to properly infer expected type of "*foo"
   by not stopping at *ast.CompositeLit searching up AST path when the
   position is in the type name (as opposed to within the curlies).

Change-Id: Iee828f259eb939646b68f5066614ea3a262585c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247525
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-21 15:12:09 +00:00
Rob Findley
c886c0b611 internal/lsp/lsprpc: quiet the handshaker during regtests
There's a bunch of noise in regtest results related to the LSP forwarder
handshake.

lsprpc.StreamServer was already configurable to disable connection
logging in tests. Use this configuration to also disable handshake
logging.

Change-Id: I4b00e23d1f0bc6dc5fdd1f6f470f0b892c6791bc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249418
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-21 14:46:10 +00:00
Rob Findley
ed71c57206 internal/lsp: consolidate progress reporting
This change contains several improvements for progress reporting:

 + Consolidate the 'progressWriter' interface into the workDone
   interface.  Now all progress reporting should use workDone, and the
   workDoneWriter struct is just an io.Writer adapter on top of
   workDone.
 + Factor out the pattern of progress reporting, and use for all
   asynchronous commands.
 + Make several commands that were previously synchronous async.
 + Add a test for cancellation when the WorkDone API is not supported.
 + Always report workdone progress using a detached context.
 + Update 'run tests' to use the -v option, and merge stderr and stdout,
   to increase the amount of information reported.
 + Since $/progress reporting is now always run with a detached context,
   the 'NoOutstandingWork' expectation should now behave correctly. Use
   it in a few places.

A follow-up CL will improve the messages reported on command completion.

For golang/go#40634

Change-Id: I7401ae62f7ed22d76e558ccc046e981622a64b12
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248918
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-21 14:46:03 +00:00
Muir Manders
9ac8e33b36 internal/lsp/source: improve completion of printf operands
We now rank printf operand candidates according to the corresponding
formatting verb. We follow what fmt allows for the most part, but I
omitted some things because they are uncommon and would result in many
false positives, or didn't seem worth it to support:

- We don't prefer fmt.Stringer or error types for "%x" or "%X".
- We don't prefer pointers for any verbs except "%p".
- We don't prefer recursive application of verbs (e.g. we won't prefer
  []string for "%s").

I decided against sharing code with the printf analyzer. It was
tangled somewhat with go/analysis, and I needed only a very small
subset of the format parsing.

I tweaked candidate type evaluation to accommodate the printf hints.
We now skip expected type of "interface{}" when matching candidate
types because it matches everything and would always supersede the
coarser object kind checks.

Fixes golang/go#40485.

Change-Id: I6440702e33d5ec85d701f8be65453044b5dab746
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246699
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-21 13:58:45 +00:00
Heschi Kreinick
c8f3937451 internal/lsp/source: fix unexported references of non-workspace packages
qualifiedObjsAtProtocolPos returned too early. Have it keep looking in
the rest of the candidate packages.

This changes the returned error slightly but AFAICT nobody cares.

Updates golang/go#40809.

Change-Id: Ic8199a484f0abcaa48cb6a3bcdd782195802d670
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249637
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-20 18:02:10 +00:00
Danish Dua
b793a1359e internal/lsp: add outgoing calls call hierarchy
* Adds outgoing calls call hierarchy for function declarations to gopls. Returns all call ranges and call items for functions/literals being called.
* Adds tests for outgoing call.
* Updates cmd to account for call ranges and call items being in different files for outgoing calls.
* Updates prepare call hierarchy to return declaration as root instead of cursor position.

Example:
Example shows https://github.com/golang/tools/blob/master/internal/lsp/source/call_hierarchy.go

Show Call Hierarchy View: https://imgur.com/a/DA5vc6l
Peek Call Hierarchy View: https://imgur.com/a/fuiG0Be

Note:
* While incoming calls for a function defined in an interface return references to that function, outgoing calls don't return anything since we don't know what implementation to return outgoing calls for.* Outgoing calls to function literals show as variable name used to define the literal, compared to <scope>.func() for incoming calls.

Change-Id: Ib8afbd8617675d12952db0b80170ada5988e90ab
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248537
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-20 01:08:01 +00:00
Heschi Kreinick
d088b475e3 internal/lsp/cmd: suppress EOF errors in serve
When the client closes its connection, we get an EOF, but it's not
really an error. Suppress it so that the gopls binary doesn't exit with
an error.

In principle we should connect this to (lsp.Server).shutdown somehow,
but as far as I know a path for that doesn't exist, and this seems
pretty innocuous to me.

Fixes golang/go#40832.

Change-Id: I9dd83d26bcf5c07e03188d3829e603005d80c8c4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249417
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-19 19:37:42 +00:00
Heschi Kreinick
d94536333c internal/lsp/cache: don't always type check in default mode
CL 248380 forced all type checking to be in the default workspace mode.
In that CL, I said I couldn't think of any features that would break. It
appears I didn't think very hard. Navigation features inside of
dependencies are something I use all the time and they broke.

Reintroduce the ability to get packages in a particular mode, and make
it convenient to get them in all relevant modes. Update some critical
features to do so, and add regression tests.

Fixes golang/go#40809.

Change-Id: I96279f4ff994203694629ea872795246c410b206
Reviewed-on: https://go-review.googlesource.com/c/tools/+/249120
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-19 19:22:15 +00:00
Pontus Leitzler
cf83efe03c internal/lsp: return err if ExecuteCommand prerequisites aren't met
Some Commands require that the buffer is saved before running them (i.e.
generate, test and toggle details). If the buffer isn't saved gopls
sends a ShowMessage request to the client. Before this change it
did not return any error from the ExecuteCommand request itself (unless
ShowMessage failed).

A progress token can be provided by the client as a part of the
ExecuteCommand request, and that is, according to the LSP spec one way
to start a WorkDoneProgress. At this point the client expects
that gopls send progress updates.

With this change, ExecuteCommand now return an error if the buffer
isn't saved, so that the client know that it shouldn't expect any
progress updates with this specific token.

Change-Id: I8a7af20a0c1532fc4ad03efd4e04bfb1a6871644
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248766
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-19 14:09:08 +00:00
Danish Dua
188abfa753 internal/lsp/mod: add go mod vendor and go mod tidy lenses
go mod tidy lens only shows up for a dirty mod file. Tidying a dirty
mod file makes the lens disappear.

Closes golang/go#40422

Change-Id: I3356ffe94deaf7a5cdfc159c16470894336edf9e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248717
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-18 00:58:47 +00:00
Heschi Kreinick
118ac038d7 internal/lsp: improve handling of non-Go folders
CL 244117 introduced a bug when modFile == os.DevNull: v.root is left
uninitialized, resulting in a view that appears to own all files. Fixing
that exposes a problem where opening a folder with no Go files and
GO111MODULE=on shows a popup. Skip the popup when no Go files are found.

Change-Id: I7f8b2d6fd2f954af64c3a65156ff44c649f3a5b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248620
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-17 19:03:02 +00:00
Rebecca Stambler
d00afeaade internal/lsp/source: fix nil pointer in rename_check
Updates golang/vscode-go#534

Change-Id: I0a30ac7f52862a096b07c35665539cfed99d4828
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248797
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-17 02:38:11 +00:00
Muir Manders
90abf76919 internal/lsp/source: fix a couple issues completing append() args
In this example:

     p := &[]int{}
     append([]int{}, *<>)

At <> we completed to "**p" instead of "*p...". There were two fixes:

1. builtinArgType() wasn't propagating the "modifiers", so we were
   forgetting about the preceding "*" pointer indirection and
   inserting it again with the completion. Fix by propagating
   modifiers.
2. The candidate formatting responsible for adding "..." had over
   simplified logic to determine if we are completing the variadic
   param. Now instead the candidate evaluation code marks the
   candidate as "variadic" so the formatting doesn't have to think at
   all.

Change-Id: Ib71ee8ecfafb915df331f1d2e55b76f76a530243
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248018
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-15 16:56:00 +00:00
Muir Manders
6fbe43b70d internal/lsp/source: improve completion in append()
In the following example:

    var foo []someStruct
    foo = append(foo, <>)

we now downrank "foo" as a candidate at "<>". You very rarely append a
slice to itself, so having "foo" ranked highly was counterproductive.

Fixes golang/go#40535.

Change-Id: Ic01366aeded4ba2b6b64bfddd33415499b35a323
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247519
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-15 16:31:36 +00:00
Muir Manders
7c0525f229 internal/lsp/source: improve func literal completions
When a signature doesn't name its params, we make up param
names when generating a corresponding func literal:

    var f func(myType) // no param name
    f = fun<> // completes to "func(mt myType) {}"

Previously we would abbreviate named types and fall back to "_" for
builtins or repeated names. We would require placeholders to be
enabled when using "_" so the user could name the param easily. That
left users that don't use placeholders with no completion at all in
this case.

I made the following improvements:
- Generate a name for all params. For builtin types we use the first
  letter, e.g. "i" for "int", "s" for "[]string". If a name is
  repeated, we append incrementing numeric suffixes. For example,
  "func(int, int32)" becomes "func(i1 int, i2 int32").
- No longer require placeholders to be enabled in any case.
- Fix handling of alias types so the param name and type name are
  based on the alias, not the aliasee.

I also tweaked formatVarType to qualify packages using a
types.Qualifier. I needed it to respect a qualifier that doesn't
qualify anything so I could format e.g. "http.Response" as just
"Response" to come up with param names.

Fixes golang/go#38416.

Change-Id: I0ce8a0a4e2485dda41a0aa696d9fd48bea595869
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246262
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-15 16:17:26 +00:00
Danish Dua
9882f1d182 internal/lsp: add initial workspace load notification
Add workspace package load (IWL) notification.

Closes golang/go#40632

Change-Id: I4d4c6fba1ece08bb0d6df52da2e6f08c959fd1ae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248623
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-14 23:09:02 +00:00
Rebecca Stambler
c4923e618c internal/lsp/cache: use a map to track package paths to reload
I could've sworn I'd already submitted this CL earlier. We've been
sending duplicate package paths to go/packages for no reason.

Updates golang/go#40690

Change-Id: I4c0d082a71e53df12991341b015e0ce8f504c318
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248403
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-14 17:20:26 +00:00
Rebecca Stambler
cd238244dd internal/lsp/cache: delete unused function
Change-Id: Ie7d488ffb21a2547ceb8bf49c4a746d3caa1c41b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248406
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-14 16:14:45 +00:00
Rebecca Stambler
0a73ddcff9 internal/lsp: check for context cancellation before showing messages
Noticed this as part of investigating golang/go#40567.

Change-Id: I977b1b0a6ceb139e35e087c16b6ab88d66af69a9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248400
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-13 23:17:17 +00:00
Danish Dua
1365742343 internal/lsp: add incoming calls hierarchy to gopls
* Adds incoming calls hierarchy to gopls. Returns function declarations/function literals/files enclosing the call/s to the function being inpected.
* Updates cmd to show ranges where calls to function in consideration are made by the caller.
* Added tests for incoming calls.

Example:
This example shows call hierarchy for PathEnclosingInterval in tools/go/ast/astutil.go
Show Call Hierarchy View: https://imgur.com/a/9VhspgA
Peek Call Hierarchy View: https://imgur.com/a/XlKubFk

Note:
* Function literals show up as <scope>.func() in call hierarchy since they don't have a name. Here scope is either the function enclosing the literal or a file for top level declarations
* Top level calls (calls not inside a function, ex: to initialize exported variables) show up as the file name
* Clicking on an item shows the the range where a call is made in the scope

Change-Id: I56426139e4e550dfabe43c9e9f1838efd1e43e38
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247699
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-13 20:36:30 +00:00
Heschi Kreinick
d926bd178c internal/lsp/cache: always type check in default mode
Every package has a default type checking mode dictated by whether it's
in the workspace or not. Some features force full rather than exported
type checking, but AFAICT that ends up being more harm than good. For
example, let's say we want to Find References on fmt.Printf in the stdlib.
Before this CL, we'd force a new type check of the fmt package, then
find no references because nothing else would have been checked against
that new version.

While there may be some features that work better in the current regime,
I can't think of any, and we have no test coverage for them. So I'd
rather start with what makes sense, and if we want to change it maybe
let's write some tests.

Change-Id: Iea589efb4b4374fd2a54451c868b6e2bd5484e20
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248380
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-13 18:10:07 +00:00
Heschi Kreinick
9176cd3008 internal/lsp/cache: trim ellipsis array literals
While looking at Kubernetes I noticed that golang.org/x/text packages
were some of the largest. The problem is the large code-generated
tables, which use ellipsis array literals. Teach gopls to trim the cases
that matter there.

While silly, this trims ~60MB off the live heap, so I think it might be
worth it.

Change-Id: I0cfd80bd5fbc8703ac628312982af9c6ed871758
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248180
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-12 23:16:40 +00:00
Muir Manders
c42aa19e51 internal/lsp/source: improve unnamed type completion
Tweak a few things so that unnamed, non-basic types are offered as
completions in certain cases:

    var _ []int = make(<>) // now properly suggests "[]int"

I also fixed type related keywords to not be offered if there is an
expected type:

    var _ *int = new(<>) // don't offer "func", etc.

There are still some cases that don't work properly. For example:

    var _ [][]int = make([]<>) // doesn't offer "[]int"

This would be harder to fix given the way things currently work.

Fixes golang/go#40275, golang/go#40274.

Change-Id: I2577d5863d4757845ad3ff7dbb125106b649a6b6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246360
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-12 23:05:10 +00:00
Rob Findley
5ae4c3c160 internal/lsp/cmd: make -remote consistent across commands
The lsprpc package implements support for connecting to remotes on unix
domain sockets, as well as auto-starting the remote if it doesn't exist.

Unfortunately, commands other than 'serve' were instead assuming the tcp
network.

Fix this to share functionality.

Fixes golang/go#40732

Change-Id: I46c303ea91d087d7432e0e3236a68e58e1ea6344
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248181
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-12 19:50:22 +00:00
Rebecca Stambler
8586c7bd52 internal/lsp: fix bad go mod tidy quick fix title
Also, catch a potential nil pointer in the go.mod parsing code and a
typo.

Fixes golang/go#40659

Change-Id: Ic0adc8025a0d657cf713a101c333f28c15275f2b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248037
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-12 18:39:12 +00:00
Brayden Cloud
c7ca52690a internal/lsp: add "run file benchmarks" code lens
This CL adds a code lens to run all benchmarks in a file. Additionally,
it updates the test command handler to better support both tests and
benchmarks.

Updates golang/go#36787

Change-Id: I6e90460f7d97607f96c263be0754537764bd0052
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246017
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-12 18:37:58 +00:00
Rebecca Stambler
3986990901 internal/lsp: lowercase drive letters on Windows to fix file watching
This is a work-around for
https://github.com/microsoft/vscode/issues/104387. We now always
lowercase the drive letter on Windows.

This CL also fixes a bug introduced by CL 245327, which caused URIs
to be used instead of paths in the GlobPattern.

We really need VS Code integration tests for this
(golang/vscode-go#404).

Updates golang/go#40661

Change-Id: I21be6d929288cfe41168cea34001fc2f41ac6c8b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247684
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-12 18:32:13 +00:00
Rebecca Stambler
eb8585a966 internal/lsp: extend the mod handle functions to handle multiple files
In the past, we assumed that we would only run these functions on the
view's go.mod file. As we expand the concept of a view to possibly
include multiple go.mod files, we need to allow these functions to work
on multiple go.mod files.

Change-Id: If9e7d131007e0977fc48ee2264365773da7d41f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/248097
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-12 18:23:14 +00:00
Rebecca Stambler
48a8ffc5b2 internal/lsp/cache: flip noGopackagesDriver to hasGopackagesDriver
It's not very clear to use double negatives. Follow-up from CL 247817.

Change-Id: Ie162d8e71ce7229bffcb2c419a16f0a08a4b7b74
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247877
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-11 21:50:21 +00:00
Rebecca Stambler
d77521d074 internal/lsp: remove extra go env GOMOD logic for single file mode
Now that the view always looks for its module, we don't need to pass
in the module root path when creating a view. This allows us to remove
some extra logic.

Change-Id: I35ffb71ec762b2dec0b72c84195ce008f7b35872
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247897
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-11 17:27:22 +00:00
Peter Weinbergr
74512f09e4 internal/lsp: in gc_details change command to use a temporary file.
https://go-review.googlesource.com/c/tools/+/246419/2 fixed a problem
but introduced a new one, as go build treats -o directories differently
depending on whether or not a main package is being built.
(see  https://github.com/golang/go/issues/36784)

This change explicitly constructs a temporary file for go build
to use.

Change-Id: I096748e9af5014428dab8a5aad703f062fe88d50
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247899
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Pontus Leitzler <leitzler@gmail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-11 15:37:30 +00:00
Rebecca Stambler
fd80f4dbb3 internal/lsp: fix a few small staticcheck warnings
Address unused context / unused error warnings.

Change-Id: Ibd302d58a3d6db5aa274ed95fb6d5a337978779a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247597
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Danish Dua <danishdua@google.com>
2020-08-11 03:20:01 +00:00
Rebecca Stambler
48de4c84f0 internal/lsp: add a configuration to limit workspace scope to root URI
Some users may intentionally be opening subdirectories to avoid having
gopls load the whole module. Allow this via a configuration.

Fixes golang/go#40567

Change-Id: I6167f62a74a1c0b7cf07c1cb247adda839ee41f2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247617
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-11 01:57:04 +00:00
Rebecca Stambler
64be3c5c02 internal/lsp/cache: check the user's configuration for GOPACKAGESDRIVER
A user need not necessarily set GOPACKAGESDRIVER in their environment,
but they may still provide it through their configuration.

Change-Id: Ic48328e6a1596ff653a048b24256b8dc44c45b8e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247817
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-11 01:10:27 +00:00
Rebecca Stambler
2d15c7a537 internal/lsp: handle results from setting options in initialize
gopls configuration can come in through initializeOptions or through
the workspace/configuration request. Make sure to handle error results
in both cases.

Change-Id: Iaf33d23aa33381ce86803f5e8d090deb369b7341
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227033
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-10 23:01:02 +00:00
Josh Baum
2f2f27240c internal/lsp: support function calls in extract variable
In the previous implementation, we could not extract call expressions
to variables.

Change-Id: I80ee82d7889247a618bd80f40abaa897d15ad20b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246761
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-10 22:41:34 +00:00
Josh Baum
72f2e0bf6d internal/lsp: limit code action false positives for extract to variable
Instead of only checking whether the selection is an AST expression in
canExtractVariable, we now also check what kind of AST expression
it is. This limits the frequency of situations where the lightbulb
appears (canExtractVariable succeeds), but nothing can be extracted
(extractVariable fails).

Change-Id: I1e63c982e482bb72df48b414bdb4e8037140afdb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247408
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-10 22:02:59 +00:00
Heschi Kreinick
c1903db4db internal/memoize: switch from GC-driven to explicit deletion
The GC-based cache has given us a number of problems. First, memory
leaks driven by reference cycles: the Go runtime cannot collect cycles
involving finalizers, which prevents us from writing natural code in
Bind callbacks. If we screw it up, we get a mysterious leak that takes a
long time to track down. Second, the behavior is generally mysterious;
it's hard to predict how long a value lasts, and harder to tell if a
value being live is a bug. Third, we think that it may be interacting
poorly with the GC, resulting in unnecessary memory usage.

The structure of the values we put in the cache is not actually that
complicated -- there are only 5 significant types: parse, typecheck,
analyze, parse mod, and analyze mod. Managing them manually should not
be conceptually difficult, and in fact we already do most of the work
in (*snapshot).clone.

In this CL the cache adds the concept of "generations", which function
as reference counts on cache entries. Entries are still global and
shared across generations, but will be explicitly deleted once no
generations refer to them. The idea is that each snapshot is a new
generation, and can inherit entries from the previous snapshot or leave
them behind to be deleted.

One obvious risk of this scheme is that we'll leave dangling references
to values without actually inheriting them across generations. To
prevent that, getting a value requires passing in the generation at
which it's being read, and an error will be returned if that generation
is dead.

Change-Id: I4b30891efd7be4e10f2b84f4c067b0dee43dcf9c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242838
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-10 19:02:17 +00:00
Josh Baum
74a6bbb346 internal/lsp: enhance fillstruct and fillreturns to fill with variables
In the previous implementation, we always created a default
value for each type in the struct or return statement in fillstruct
and fillreturns, respectively. Now, we try to find a variable in scope
that matches the expected type. If we find multiple matches, we choose
the variable that is named most similarly to the type. If we do not
find a variable that matches, we maintain the previous functionality.

Change-Id: I3acb7e27476afaa71aaff9ffb69445913575e2b6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245130
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-10 18:49:36 +00:00
Rebecca Stambler
e1f7ec57ef internal/lsp/cache: fix gopackagesdriver binary detection logic
GOPACKAGESDRIVER=off supersedes the existence of a gopackagesdriver
binary.

Change-Id: I0f2f78850c5cc1163f22ca858e5783b0899f4490
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247685
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-10 18:39:49 +00:00
Rob Findley
978e77c455 internal/lsp/progress: refactor progress reporting
Progress reporting has gotten complicated, and has had a couple bugs.
Factor out progress-related behavior to a new progressTracker type, and
use this to implement some unit tests.

Also rename some methods to remove stuttering, and reorganize the code
to be more logical.

Fixes golang/go#40527

Change-Id: I93d53a67982460e7171f892021e99f4523fe3e5d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247407
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-10 15:18:52 +00:00
Rob Findley
30a0893a98 internal/lsp: use the token supplied by the client for progress
Our WorkDone reporting was generating a random token for each unit of
work, even if a token was supplied by the client.  Change this to use
the client token if it is non-empty, and skip the
workDoneProgress/create request.

After this change we can no longer rely on tokens being a string.
Update our progress tracking accordingly.

For golang/go#40527

Change-Id: I702f739c466efb613b69303aaf07005addd3b5e2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247321
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-10 15:15:12 +00:00
Pontus Leitzler
3e8281990c internal/lsp: build output to package during gc_details code lens
The gc annotation details code lens did build binaries during
diagnostics to the module root. When trying to enable details for a
main package in a sub directory, it failed since the output binary name
conflicted with the sub directory name.

Instead, specify output to the package directory during build to avoid
conflicts.

Change-Id: Idc11e0c6a9ba15a66645aeef89bffb5abde76928
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246419
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2020-08-10 15:03:20 +00:00
Muir Manders
6f4f008689 internal/lsp/source: improve completion in switch cases
Now we downrank candidates that have already been used in other switch
cases. For example:

    switch time.Now().Weekday() {
    case time.Monday:
    case time.<> // downrank time.Monday
    }

It wasn't quite as simple as tracking the seen types.Objects.
Consider this example:

    type foo struct {
      i int
    }

    var a, b foo

    switch 123 {
    case a.i:
    case <>
    }

At <> we don't want to downrank "b.i" even though "i" is represented
as the same types.Object for "a.i" and "b.i". To accommodate this, we
track having seen ["a", "i"] together. We will downrank "a.i", but not
"b.i".

I applied only a minor 0.9 downranking when the candidate has already
been used in another case clause. It is hard to know what the user is
planning. For instance, in the preceding example the user could intend
to write "a.i + 1", so we mustn't downrank "a.i" too much.

Change-Id: I62debc5be3d5d310deb69d11770cf5f8bd9add1d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247337
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-09 01:28:40 +00:00
Muir Manders
5bf02b21f1 internal/lsp/source: fix bug in deep completion score tracking
We keep track of the N highest seen scores so we can quickly skip deep
completions not in the top N. Our logic for maintaining the top N list
wasn't quite right, resulting in certain cases where we would let
non-high scoring candidates through. I don't think the bug impacted
correctness.

Change-Id: Ic105617523c82f0e71e4f95ef0ee216182a84252
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247418
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-08 16:17:06 +00:00
hasheddan
b8f4a4e40d internal/lsp/protocol/typescript: clean up type gen documentation
Updates wording in lsp protocol type generation documentation regarding
anonymous struct types for formal parameters.

Change-Id: Icd78545c0f8b3d78d41ab6eb95dac2bc381dcc1c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247520
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-08 14:55:51 +00:00
Muir Manders
19738be007 internal/lsp/source: improve type switch case completion
Now we will filter out the types already used in other case
statements:

    switch ast.Node(nil).(type) {
    case *ast.Ident:
    case *ast.I<> // don't offer "Ident" since it has been used
    }

Note that the implementation was not able to use a map to track the
seen types.Types because we build up types.Type entries dynamically
when searching for completions (e.g. types.NewPointer() to make a
pointer type). We must use types.Identical() instead of direct pointer
equality.

Change-Id: I316638bb48bfd6802e2caea671f297d640291010
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247098
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-07 23:56:57 +00:00
Rebecca Stambler
383b97c0b5 internal/lsp: watch directories in replace targets and update on changes
This change adds the notion of a "workspace directory", which is
basically the set of directories that contains workspace packages. These
are mainly used for replace targets right now. It's a little trickier
than expected because the set of workspace directories can technically
change on any go.mod change.

At first, I wanted DidModifyFiles to report whether there was a change,
but I don't think it's actually that expensive to check on each call
and it complicates the code a bit. I can change it back if you think
it's worth doing.

The parse mod handle changes are because I needed an unlocked way of
parsing the mod file, but I imagine they'll conflict with CL 244769
anyway.

The next CL will be to "promote" replace targets to the level of
workspace packages, meaning we will be able to find references in them.

Change-Id: I5dd58fe29415473496ca6634a94a3134923228dc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245327
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-07 23:35:17 +00:00
Rebecca Stambler
c05a0f5be4 internal/lsp/cache: refactor go mod tidy error logic
This CL is mostly a refactoring of the logic to compute errors for
`go mod tidy` diagnostics. It had been getting a little confusing, so
hopefully this makes things easier to read.

I made a few other small changes, such as slightly changing a few error
messages and showing diagnostics in the go.mod file for all missing
modules.

Change-Id: Ia8cf580731b997248591a2d64dff133accd9c5aa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244610
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-07 22:43:23 +00:00
Danish Dua
9221131678 internal/lsp: release resources for call hierarchy file requests
* adds call to release resources for beginFileRequest in
  lsp/call_hierarchy.go
* fixes source_test

Change-Id: Id45f61ccd474a2df9f46be89fdb059cfe8584f0c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247497
Run-TryBot: Danish Dua <danishdua@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-07 21:04:51 +00:00
Danish Dua
a5d4502270 internal: add call hierarchy cmd and lsp scaffolding
* adds gopls command line tool for call hierarchy
* adds lsp setup for call hierarchy
* adds handler for textDocument/prepareCallHierarchy to display selected
  identifier and get incoming/outgoing calls for it
* setup testing

Change-Id: I0a0904abdbe11273a56162b6e5be93b97ceb9c26
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246521
Run-TryBot: Danish Dua <danishdua@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-07 20:22:52 +00:00
Rebecca Stambler
f15f0bfc61 internal/lsp/cache: check for a gopackagesdriver binary
We missed a possible case in checking for gopackagesdriver - a binary
named gopackagesdriver works the same way as setting GOPACKAGESDRIVER.

Change-Id: I676800d253950cb35d74211558bafab340310653
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247179
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-08-07 18:25:03 +00:00
Josh Baum
6756e73834 internal/lsp: fix bug in extract function when highlighting full line
We did not adjust the range in extractFunction(). We only adjusted
the range in canExtractFunction().

Change-Id: Idc1eab775988ab61be6df8b4afd4b1a36a8bb0ff
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247405
Run-TryBot: Josh Baum <joshbaum@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-07 18:02:56 +00:00
Josh Baum
1c672e2dff internal/lsp: prioritize non-"zero" values in fillreturns
In the previous implementation, we kept the first variable in the
return statement that matched the each given return type. Now, we
keep searching for a non-"zero" value, even if we have already found
a "zero" value.

Change-Id: Icf0987bab90239781452319979e7a30502807e36
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246917
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-07 14:33:55 +00:00
Muir Manders
990129eca5 internal/lsp/source: prefer funcs when completing go/defer
Now we prefer functions when completing "go" and "defer" statements.
Previously we had no preference for the type of object. Further, we
will now also properly invoke functions.

    var f1 int
    var f2 func()
    go f<> // prefers "f2" and expands to "f2()"

Change-Id: I213551b74ba453c337ac89e825b5d495659e9d65
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246359
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 23:41:36 +00:00
Muir Manders
23e6869392 internal/lsp/source: don't prefer bool candidates in bool exprs
Consider this example:

    var foo, bar int
    if foo == 123 && b<> {
    }

Completing at "<>" previously preferred the unimported
"bytes.Contains()" function because it returns a bool. You often need
to compose a boolean expression from non-boolean candidates, so
preferring only bool candidates gives unhelpful results. Now we don't
infer any expected type for "&&" and "||", which allows the example to
prefer "bar" as the top candidate.

Fixes golang/go#37163.

Change-Id: Ic341da11dd626439cfb265d129288c5ca6008270
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246362
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 23:41:14 +00:00
Muir Manders
41a9f6dc66 internal/lsp/source: fix function completion ranking
I noticed an annoying completion ranking issue:

   // ranks "HandlerFunc" over "HandleFunc"
   http.HandleFunc<>

This was due to us downranking function calls to prefer fields/vars. I
tweaked the logic to only downrank methods (with a receiver).

Change-Id: Ia4040dc8a35f641be2d7d934bf555090831219ac
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246357
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 22:03:01 +00:00
tennashi
9099c90ca5 internal/lsp: fix the first change check
In the current implementation, the return value of wasFirstChanges() is
reversed and did not record the URI of the changed file.  In addition,
the snapshot was not stored in the snapshotByURI.

So I fixed when didChange() is executed, the URI of the edited file is
registered and wasFirstChanges() returns true if the URI is not
registered.  Also the snapshot is now stored in snapshotByURI.

Fixes golang/go#40531

Change-Id: I0adbf7459593d70660beb3b37900ffc88f707917
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247118
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 20:04:45 +00:00
Josh Baum
110bd3ba6b internal/lsp: make function extraction smarter
In the previous implementation, the extracted function would
sometimes include superfluous parameters and return values. It
might also  unnecessarily initialize variables. This CL introduces
3 rules to limit this behavior. (1) a variable is not passed as a
parameter to the extracted function if its first use within the
function is its own redefinition. (2) a variable is not returned
from the extracted function if its first use after the function is its
own redefinition. (3) when possible, we redefine variables in the call
expression to the extracted function.

Change-Id: Ideb5a7eff8a1bf462c83271a2f043116ff5d8b76
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244770
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 19:37:29 +00:00
Rebecca Stambler
ee49e490f2 internal/lsp/source: fix bug introduced by CL 246757
CL 246757 resulted in an infinite loop because the value of "o" is
never updated.

Change-Id: I79cf265349838de19089c4468128c565a9a3cda3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247182
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Baum <joshbaum@google.com>
2020-08-06 18:32:31 +00:00
Muir Manders
90696ccdc6 internal/lsp/source: simplify variadic logic in completion
In the example:

    append([]T{}, <>)

We used to track the "objType" as "[]T", and "variadicType" separately
as "T". However, most things are more interested in "T" vs "[]T", so
they had to fiddle around with swapping types. Now instead we track
objType as T, and add a "variadic=true" flag indicating that "[]T" is
also an acceptable type.

Change-Id: I8ee3ef840917378c8406368cb5c660a377498dfd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246698
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 02:28:45 +00:00
Muir Manders
6fe4996ff4 internal/lsp/source: fix multi return value func completion
Fix a minor completion ranking issue:

    foo := func(int, int) {}
    foo(123, <>)

Previously we were preferring "foo()" at "<>" even though it can't be
used. We mistakenly thought we were completing the first param because
the *ast.CallExpr appears to only have a single param.

Change-Id: Iedbbb1870a4b9eb5d5be4ed266b8bb3e313b496b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246697
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-06 02:28:35 +00:00
Peter Weinbergr
0b898c9289 internal/lsp: add options to control which details gc_details shows
The gc_details command, which shows the gc compiler's decisions, can
produce thousands of diagnostics for a package. New gopls options
'noBounds', 'noEscape', 'noInline', 'noNilcheck' will suppress diagnostics
of less interest to the user. These are in a new 'annotations' section
parallel to 'codelens' or 'analyses'.

Change-Id: Ica75de25b14f38b67ddfa9f997f581674f45221d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246477
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-05 22:37:31 +00:00
Heschi Kreinick
f29cbc7105 internal/lsp: remove source.Cache
snapshot.View().Session().Cache().FileSet() has been driving me crazy
for a while. Add it to snapshot. Along the way, discover that the Cache
interface is now totally unused and delete it.

I also changed a bunch of View arguments to Snapshot while I was in the
area.

Change-Id: I1064d0020b1567c2ed28d2d55e0f4649eb94c060
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245324
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-05 22:08:24 +00:00
Rebecca Stambler
b4d825fe35 internal/lsp: fix applyTextDocumentEdits and delete extra function
Follow-up from CL24645 246458.

Change-Id: I77872154e2aa2d6028add84dadc5d8aad05b59ee
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246759
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Baum <joshbaum@google.com>
2020-08-05 20:02:55 +00:00
Rebecca Stambler
d55f2eddcb internal/lsp/source: fix nil pointer in extract function
Ran into this while debugging another issue.

Change-Id: I154493418c7676a24457a4e11431ad4f0311c07a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246757
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Baum <joshbaum@google.com>
2020-08-05 15:47:06 +00:00
Josh Baum
e5d681aac7 internal/lsp: remove excess 'zero values' in return statements
In the previous implementation, fillreturns only altered return
statements that contained too few values. Now, fillreturns also examines
return statements with too many return values. In these situations,
we remove any value that is a "zero value" and does not match a type
in the return signature.

Change-Id: I7548307234ff4b16534b72a8aead95a322eb535a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246520
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-05 14:29:31 +00:00
Danish Dua
fec4f28ebb internal/lsp/source: fix completion prefix for comment completion
This CL addresses completion prefix not being overwritten for completion
in comments for exported variables/functions/types etc. Instead of
setting the surrounding range as cursor position, we expand out from
cursor instead to replace the word we're currently on.

Fixes golang/go#39262

Change-Id: I90c28562e3ef285ce6848598f8d7bd7545d5c957
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246237
Run-TryBot: Danish Dua <danishdua@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-04 23:49:16 +00:00
Josh Baum
5c72ddda61 internal/lsp: fix bug in extract variable edit positions
Previously, the suggested fix tests did not properly handle the case
in which one fix contained at least two edits. We also prevent
the server from panicing when we cannot extract the selection.

Change-Id: I38f7b6d871b2f2741349a3fd94fd95b396f5fd33
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246458
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-04 20:55:55 +00:00
Josh Baum
b2519014df internal/lsp: fail test if command cannot be applied
In the previous implementation, a test would pass if the given
command could not be applied to the given range.

Change-Id: I2e63972472cbd146cb5f27a3e27c878387222cb6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/246517
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-04 20:25:19 +00:00
Rebecca Stambler
d73700863c internal/lsp: get the correct declaration node when finding references
We were returning the AST node for the identifier that the rename was
called from, not the actual declaration, so the doc comments weren't
getting updated.

Fixes golang/go#40463

Change-Id: Id8ba0b0aeb8f42d2aaa561e7a964edcca5202916
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245817
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-04 17:27:45 +00:00
Heschi Kreinick
6c149bb5ef internal/lsp/cache: store parseGoHandles
parseGoHandles have lifetimes separate from the packages they belong to.
For example, a package may be invalidated by a change to one of its
files, but we still want to retain the parse results for all the rest.
Track them explicitly.

Change-Id: I03a4ffe283bf2b252d2d838bdb2cf332cd981075
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245059
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-04 01:15:35 +00:00
Danish Dua
5a22b632c5 internal/lsp: refactor line folding range code
This CL removes duplicate code in lineFoldingRange function under
lsp/source/folding_range.go and generally improves code quality.

Fixes bug with composite literal folding where gopls was folding literals
with braces on the same line as end token (paranthesis/braces).

Change-Id: I742f285d866d72a243129c0aef0935fe2a1ad0dd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245757
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-08-03 22:55:02 +00:00
Heschi Kreinick
c9619e8fac internal/lsp: separate LSP files from FS files
FileHandle currently includes LSP-level information about Version and
Session. That's dangerous, because the cache operates in terms of
URIs and content only -- we explicitly want to share results across
sessions and versions if they happen to be the same.

Split the LSP information into separate types, VersionedFileHandle and
VersionedFileIdentity.

Change-Id: I158646b783375b58245468599301e2a29c657e71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245058
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-08-03 22:16:06 +00:00
Heschi Kreinick
39fdd541e6 internal/lsp: move builtin package to Snapshot
The builtin package was the one special case where we parsed Go outside
the context of a Snapshot. Move it up.

Change-Id: I1f4bb536adb40019e0ea9c5c89f38b15737abb8c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245057
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-03 22:09:14 +00:00
Heschi Kreinick
412b8bda49 internal/lsp/cache: ref-count snapshots
To manually collect cache entries, we need to know when a snapshot is
idle. Add a reference count in the form of a WaitGroup and keep track of
its uses. The pattern is that any time a snapshot is returned, it comes
with a release function that decrements the ref count.

Almost all uses of a snapshot originate in a user-facing request,
handled in beginFileRequest. There it's mostly an exercise in passing
Snapshots around instead of Views.

In the other places I took the path of least resistance. For file
modifications I tried to minimize the amount of code that needed to deal
with snapshots. For diagnostics I just acquired the snapshot at the
diagnostics call.

Change-Id: Id48a2df3acdd97f27d905e2c2be23072f28f196b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241837
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-03 22:08:54 +00:00
Rebecca Stambler
b5fad4ed8d internal/lsp: invalidate all packages on go.mod file changes
Previously, we were only invalidating workspace packages when the go.mod
changed, but we really need to be invalidating all known packages.

Fixes golang/go#40456

Change-Id: I9ad353a26ab40c74c7760ed7a1c5de517640cfab
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245779
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-31 06:09:45 +00:00
Danish Dua
1ac65761fe internal/lsp: fix go.mod.golden test file to have sorted mod names
This change is generated whenever you run go test . --golden to generate
updated golden files. Commiting it so it doesn't show up in other CLs.
The module names are now sorted and hence this change shouldn't happen again.

Change-Id: I5d6c44d9a4f3ca24e336afad301136af7123eef7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245997
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Danish Dua <danishdua@google.com>
2020-07-30 22:19:56 +00:00
Pontus Leitzler
fe6bb45d21 internal/lsp: use URI as key in gc optimization details map
Packages that have gc_details enabled is stored internally in a
map[span.URI]struct{}, but when toggling on/off via ExecuteCommand, the
scheme is lost. The mismatch lead to no diagnostics from gc_details.

This fix uses span.URIFromPath() to parse the file path, so that the
internal keys are found when diagnostics are calculated.

Change-Id: I53b4e869625251c366b12b570eb03212319d2770
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245858
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-30 20:01:20 +00:00
Danish Dua
644d416712 internal/lsp: add folding range for select case statements
This CL adds folding ranges for CommClause nodes (which represent select
statement cases).

Fixes golang/go#40146

Change-Id: Ifcc91cc43714d52346445fc02d9eee8b8364af20
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245697
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-30 18:32:39 +00:00
Heschi Kreinick
6467de6f59 internal/lsp: remove Mod handles
Continuing the massacre, remove ParseModHandle, and Mod*Handle, from the
source API.

Notably, having the snapshot available means we can simplify the go
command invocation paths a lot.

Change-Id: Ief4ef41e42f93d653f719a230004861e5e1ef70b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244769
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-29 19:44:36 +00:00
Rebecca Stambler
b47602a87a internal/lsp: handle nil pointer in go.mod links
Fixes golang/go#40433

Change-Id: I9e85f6d28886f8addf1d9142bc87f22eee1a4a36
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244840
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-29 19:22:10 +00:00
Rebecca Stambler
6b78e25f47 internal/lsp: fix a few staticcheck suggestions, some cleanup
There were a few merge conflict-related issues in the GC optimization
details CL. Also fixed a few things I noticed after the fact, like
separating out a new mutex.

Staticcheck caught a few things, and I also fixed a bug I noticed
in the cache package.

Change-Id: I3fc519373253418586dca08fdec3114b30a247ea
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245399
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2020-07-29 17:11:59 +00:00
Rebecca Stambler
8afe7e0893 internal/lsp: don't show diagnostic in go.mod for direct dependencies
Fixes golang/go#40470.

Change-Id: I4831b837e6db5cc344c20480abde1e688ddab0dc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245537
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-07-29 17:04:04 +00:00
Rebecca Stambler
449c585133 internal/lsp: properly check for nil on i.enclosing
Fixes golang/go#40479

Change-Id: If827a86fd603574d3adde295c1165bb6267732eb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245486
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-29 16:35:35 +00:00