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Commit Graph

1671 Commits

Author SHA1 Message Date
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
Josh Baum
1c1ec420e5 internal/lsp/source: move initial extract function logic to lsp/command
In the previous implementation, the initial verification in lsp/command
for whether extract function was relavant to the given range did not
contain much of the initial logic for extract function. This meant
that "canExtractFunction" produced many false positives (i.e. the
lightbulb would appear when it should not have in VSCode). This CL
moves more of the verification process from "extractFunction"
(lsp/source) to "canExtractFunction" (lsp/command).

Change-Id: If2683dc9ac3f4bfa8c3444418cf88edd8cbe73e6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245398
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-29 16:09:07 +00:00
Rebecca Stambler
df70183b18 internal/lsp/source: add extra nil check in searchForEnclosing
I still keep seeing this crash too, even after CL 244841.

Fixes golang/go#40464

Change-Id: Ic587045e65f34c24bd6df452e24517fd90e36bbe
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245440
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-29 04:18:21 +00:00
Peter Weinbergr
e8769ccb43 internal/lsp: fix logged message for gc_details
Removes leftover debugging string from the message logged when
gc_details executes.

Change-Id: I802b276d1590e0b1e9793190990a1e576dc893ed
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245417
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 23:52:36 +00:00
Rebecca Stambler
0dd562f374 internal/lsp: remove uses of crypto/sha1 in gopls
SHA1 can have collisions. Replaced with crypto/sha256.

Change-Id: I54e8c042ae1a4eb41760ccbe26a7c59f68309477
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245326
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-28 22:26:17 +00:00
Peter Weinbergr
95780ea8b3 internal/lsp: show compiler optimization decisions
The gc compiler will report its decisions about inlining, escapes, etc.
This can be turned on and off with a new optional code lens gc_details.
When enabled, the code lens will be displayed above the package
statement. The compiler's decisions are shown as information diagnostics.
(Other diagnostics have been errors and warnings.)

Change-Id: I7d1d5b5b5cf8acd7ff08f683e537ea618e269547
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243119
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 21:59:21 +00:00
Rebecca Stambler
edd3c8e9e2 internal/lsp: de-duplicate logic for canExtractVariable
We'd like to call canExtractVariable in extractVariable without
duplicating logic. The same needs to be done for canExtractFunction.

Change-Id: Ia99befabbafffcf13dd3bc12355f9ddb81a71002
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245135
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-28 19:08:22 +00:00
Rebecca Stambler
342ee1054f internal/lsp: check URIs of all workspace folders
We can prevent crashing on non-file URIs by checking the URIs of the
workspace folders, as well as the root URI.

Updates golang/go#40272

Change-Id: Ieddc6d6053fbb3d61e4c26fc8831c092328f6f33
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244602
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-28 19:06:24 +00:00
Rob Findley
e7a7e3a8a0 internal/lsp/source: add a unit test for searchForEnclosing
The logic to resolve the enclosing type for an identifier is somewhat
tricky. Add a unit test to exercise a few edge cases.

This would probably be easier to read and write using a hybrid approach
that extracts markers from the source.

This test uncovered a bug, that on the SelectorExpr branch we were
accidentally returning a nil *Named types.Type, rather than a nil
types.Type.

Change-Id: I43e096f51999b2a6e109c09d3805ad70a4780398
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244841
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-28 18:51:24 +00:00
Heschi Kreinick
b6476686b7 internal/lsp: remove PackageHandle
Just like ParseGoHandle, PackageHandle isn't very useful as part of the
public API. Remove it.

Having PackagesForFile take a URI rather than a FileHandle seems
reasonable, and made me wonder if that logic applies to other calls like
ParseGo. For now I'm going to stop here. I could also revert that part
of the change.

Change-Id: Idba8e9fdba0b0c48e841a698eb97e47fd5f23cf5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244637
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 17:35:25 +00:00
Heschi Kreinick
a9439ae9c1 internal/lsp: replace ParseGoHandle with concrete data
ParseGoHandles serve two purposes: they pin cache entries so that
redundant calculations are cached, and they allow users to obtain the
actual parsed AST. The former is an implementation detail, and the
latter turns out to just be an annoyance.

Parsed Go files are obtained from two places. By far the most common is
from a type checked package. But a type checked package must by
definition have already parsed all the files it contains, so the PGH
is already computed and cannot have failed. Type checked packages can
simply return the parsed file without requiring a separate Check
operation. We do want to pin the cache entries in this case, which I've
done by holding on to the PGH in cache.pkg.

There are some cases where we directly parse a file, such as for the
FoldingRange LSP call, which doesn't need type information. Those parses
can actually fail, so we do need an error check. But we don't need the
PGH; in all cases we are immediately using and discarding it.

So it turns out we don't actually need the PGH type at all, at least not
in the public API. Instead, we can pass around a concrete struct that
has the various pieces of data directly available.

This uncovered a bug in typeCheck: it should fail if it encounters any
real errors.

Change-Id: I203bf2dd79d5d65c01392d69c2cf4f7744fde7fc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244021
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 17:35:11 +00:00
Heschi Kreinick
4d1d9acccf internal/lsp/cache: fix parseKey
The FileIdentity struct mixes information about the file itself
(filename, hash) with information about the LSP references to that file
(session ID, version). When we create a cache key using it, we only want
the former, as returned by the String method. Otherwise we split the
cache whenever those irrelevant fields are different.

We also use FileIdentity as an element of diagnosticsKey, but I believe
that use is appropriate.

Change-Id: I094e00d2700e05778da635effbb69d0ebcb6726e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244020
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 17:34:57 +00:00
Heschi Kreinick
72051f7961 internal/lsp: pass snapshot/view to memoize.Functions
Due to the runtime's inability to collect cycles involving finalizers,
we can't close over handles in memoize.Functions without causing memory
leaks. Up until now we've dealt with that by closing over all the bits
of the snapshot that we want, but it distorts the design of all the code
used in the Functions.

We can solve the problem another way: instead of closing over the
snapshot/view, we can force the caller to pass it in. This is somewhat
scary: there is no requirement that the argument matches the data that
we're working with. But the reality is that this is not a new problem:
the Function used to calculate a cache value is not necessarily the one
that the caller expects. As long as the cache key fully identifies all
the inputs to the Function, the output should be correct. And since the
caller used the snapshot/view to calculate that cache key, it should
always be safe to pass in that snapshot/view. If it's not, then we
already had a bug.

The Arg type in memoize is clumsy, but I thought it would be nice to
have at least a little bit of type safety. I'm open to suggestions.

Change-Id: I23f546638b0c66a4698620a986949087211f4762
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244019
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 17:34:46 +00:00
Heschi Kreinick
60da08ac03 internal/lsp/cache: remove files from the memoize.Store
The memoize cache buys us little for files: the cache value is not
really a function of the inputs, but rather the filesystem state. It's
pretty much just as easy to manage them explicitly, and it's a start at
simplifying our caching strategy.

We do lose one small feature: if we try to read the same file
concurrently, reads will not be deduplicated. I suspect that doesn't
matter.

Change-Id: I75e219467fb7a512d9cfdf87443d012c85f03df9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243197
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-28 17:34:34 +00:00
Heschi Kreinick
051e64e62c internal/lsp: minimize PackageHandle interface
The PackageHandle interface is fairly redundant with the Package
interface. As much as convenient, move users to Package and
weaken/remove methods from PackageHandle.

I would like to get rid of CompiledGoFiles too but
NarrowestPackageHandle is a little annoying. I think this is
unambiguously a step forward so I figured we can get it in and keep
iterating.

Change-Id: I6c5a3f462b1f19cbca6a267fedc36ce54613b6fc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244018
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 17:34:24 +00:00
Rebecca Stambler
2ad651e9e2 internal/lsp: handle bad formatting with CRLF line endings
The importPrefix logic is complicated by Windows line endings, since
go/ast isn't aware of different line endings in comment text. I made a
few changes to the way that import prefixes are computed to handle this.

Specifically, for comments, we try to make sure the range ends on a full
line as much as possible, because that addresses the line ending issue.

Fixes golang/go#40355

Change-Id: I84c1cfa0d0bae532e52ed181e8a5383157feef24
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244897
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-28 16:05:17 +00:00
Josh Baum
3c048e20c6 internal/lsp: support return statements in extract function
Previously, users could not extract code that contained a return
statement. Now, users can extract code with return statements, as long
as the statements are nested within an if, case, or other control
flow statement.

Updates golang/go#37170

Change-Id: I2df52d0241517472decabce3666a32392ff257bd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243650
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-28 16:04:03 +00:00
Peter Weinbergr
cd83430bb0 internal/lsp: update code for LSP protocol
1. Change code.ts so it generates []json.RawMessage in place of []interface{}
for Command-related arguments. As usual, vscode introduces a lot of
whitespace-only changes.
2. Generate code based on the July 28 version of vscode-languageserver.
The changes are mostly related to SemanticToken, and didn't require
any changes to gopls, other than in the generated code.

Change-Id: I673e29e2fbc097409683dfe7af911d8f66e25c5c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245134
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-28 15:42:44 +00:00
Pontus Leitzler
55644ead90 internal/lsp: allow narrower scope for convenience CodeActions
Code actions that apply convenience fixes were filtered by the start
line so it wasn't possible to narrow the scope to a specific range.

This change allows clients to send a specific range (or cursor position)
to filter all fixes where the range doesn't intersect with the provided
range. It also widens the diagnostic returned by fillstruct analysis.

The idea is to provide a way to narrow the scope without breaking
clients that do want to ask for code actions using the entire line.

Updates golang/go#40438

Change-Id: Ifd984a092a4a3bf0b3a2a5426d3e65023ba4eebc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244519
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-27 23:36:28 +00:00
Rebecca Stambler
7b4c4ad3dc internal/lsp: correctly marshal arguments for upgrade code lens
I'm not sure how the regtest didn't catch this - is it possible that
it could unmarshal a single string a slice of string? Either way, I'd
like to get the fix in quicker - I'll try to add more regtests for this
later.

Also, validate the upgrade results more thoroughly.

Change-Id: I812a3fecd9f0642a1408c0a9c0376bb98d50b397
Reviewed-on: https://go-review.googlesource.com/c/tools/+/245065
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-27 21:52:59 +00:00
Rebecca Stambler
59c6fc0b54 internal/lsp: correctly invalidate metadata for batched changes
I finally spent the time to understand why branch changes were causing
unexpected errors. There may be other bugs, but this is the first I
spotted. For batched invalidations, we were overriding the value of
invalidateMetadata for each file, so the results depended on the order
of files in the didChangeWatchedFiles notification.

Change-Id: Id3ca7a758af0115c46dcd74ede590a0be3f8307d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244606
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-27 19:55:46 +00:00
Rebecca Stambler
9267083701 internal/lsp: support refactor.extract through commands
The logic for extracting a function is quite signficant, and the code
is expensive enough that we should only call it when requested by the
user. This means that we should support extracting through a command
rather than text edits in the code action.

To that end, we create a new struct for commands. Features like extract
variable and extract function can supply functions to determine if they
are relevant to the given range, and if so, to generate their text
edits. source.Analyzers now point to Commands, rather than
SuggestedFixFuncs. The "canExtractVariable" and "canExtractFunction"
functions still need improvements, but I think that can be done in a
follow-up.

Change-Id: I9ec894c5abdbb28505a0f84ad7c76aa50977827a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244598
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-27 19:25:51 +00:00
Rebecca Stambler
eaaaedc6af internal/lsp: fix hover link for embedded fields and methods
Our logic to generate documentation links did not account for embedded
fields and methods. The types.Info.ObjectOf an embedded field returns
the *types.Var created for the field, not its types.TypeName, so we have
to navigate back to the actual definition of the field. This requires
traversing through all of the named types in the top-level type.

Fixes golang/go#40294

Change-Id: Ia6573aebe66b7f60e2d6861a381cd7b07e7d7eaa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244178
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-27 15:46:26 +00:00
Rebecca Stambler
102e7d3570 internal/lsp: fix GlobPattern for watching files
I noticed this wasn't working correctly when debugging issues with file
changes on disk. I think I misunderstood how to correctly match on
zero or more path segments. Confirmed that this is working as expected
with VS Code, but we really need regression tests for this in VS Code
(it seems to be based directly on VS Code's API). Filed
golang/vscode-go#404.

Change-Id: Ib906f73a97317dfa9bd30099877c90d4072651cc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244605
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-25 20:09:36 +00:00
Rebecca Stambler
b5fc9d354d internal/lsp: add parse errors as diagnostics even when parsing fails
When a package consists of files that only fail to parse, we fail to
associate parse errors with the package, and therefore return no
diagnostics. To address this, we need to associate the errors with the
package. This involves adding a *token.File to the parseGoData so that
error messages and positions can be properly extracted, even when there
is no associated AST.

Fixes golang/go#39763

Change-Id: I5620821b9bcbeb499c498f9061dcf487d159bed5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243579
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-24 17:29:32 +00:00
Rebecca Stambler
7017fd6b13 internal/lsp: fix hover for implicit type switch variable declarations
There was a bug in the hover for type switch variables. For example:

var x interface{}
switch y := x.(type) {
    case string:
    case int:
}

Hovering over y would previously show "var y string", because y's object
would be mapped to the first types.Object in the type switch. Now we
show the hover for y as "var y interface{}", since it's not yet in the
cases.

Change-Id: Ia9bd0afc4ddbb9d33bbd0c78fa32ffa75836a326
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244497
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-24 02:27:22 +00:00
Rebecca Stambler
cbb3c69a37 internal/lsp: add errors for missing modules that don't map to an import
Some modules may need to be added to the go.mod without being associated
with an import statement. In such cases, we show the missing module
diagnostic on the whole go.mod file. This isn't ideal, but mapping to
the full require statement isn't that simple, and this is an easy enough
starting point. The code in mod_tidy.go is becoming more unwieldy - I
think I will clean it up in a follow-up.

Fixes golang/go#39784

Change-Id: Ib32ec1fd74c455ce42ba778ea6cba0a475cf245a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243218
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-24 00:18:24 +00:00
Rebecca Stambler
37a045f3b9 internal/lsp: move undeclaredname suggested fix out of analysis
This CL is a follow-up from CL 241983. I didn't realize that the
undeclaredname analysis was also using the go/printer.Fprint trick,
which we decided was both incorrect and inefficient. This CL does
approximately the same things as CL 241983, with a few changes to make
the approach more general.

source.Analyzer now has a field to indicate if its suggested fix needs
to be computed separately, and that is used to determine which
code actions get commands. We also make helper functions to map
analyses to their commands.

I figured out a neater way to test suggested fixes in this CL, so I
reversed the move to source_test back to lsp_test (which was the right
place all along).

Change-Id: I505bf4790481d887edda8b82897e541ec73fb427
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242366
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 23:54:27 +00:00
Rob Findley
0e1f6f5c09 internal/lsp/regtest: fix WithoutWorkspaceFolders option
This option was previous a no-op.

Change-Id: Id28f6802c8f5b020fb3ae71f5b941c0517ca1725
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244548
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-23 23:38:05 +00:00
Rob Findley
93b64502c3 internal/lsp/regtest: add a simple stress test
Using the new run options to configure a testing environment suitable
for long-running tests, a trivial stress test is added to type
arbitrarily in a known problematic repository
(github.com/pilosa/pilosa).

Change-Id: I2c8237843111f17ff5a096515cb4704c62513ed0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244441
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 23:37:47 +00:00
Rob Findley
84d0e3d1cc internal/lsp/regtest: add run options to support stress testing
A bunch of options are added to enable long-running performance-oriented
tests in existing directories. They will be used in a later CL to
implement a simple stress test, as an example of what is possible.

Change-Id: I531b201b415362ea135978238b3d64b903226359
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244440
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 23:37:37 +00:00
Rob Findley
a5e28d8dab internal/lsp/fake: move to a struct for configuring the sandbox
The Sandbox constructor was getting out of control, and this allows
binding regtest options directly to the sandbox configuration struct.

Change-Id: I18da4ddf43c86b3b652516c3ddca7726cd35e3b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244439
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 23:36:26 +00:00
Rob Findley
1ff154e68b internal/lsp: lift env out of the sandbox into the editor
This removes some unncessary mangling of strings, and allows the editor
to fully own its configuration.

Change-Id: I0fde206824964124182c9138ee06fb670461d486
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244360
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 21:58:45 +00:00
Rebecca Stambler
d2c1b4b270 internal/lsp: show errors in indirect dependencies as diagnostics
This change is a follow-up from CL 242477. We now also surface errors
in indirect dependencies as diagnostics in the go.mod file. Any errors
we cannot match are surfaced as diagnostics on the entire go.mod file.
This isn't the most user-friendly way, but it seems simplest.

Change-Id: Ife92c68c09b74a0b53de29d95b6c4c2a9c78d3b9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244438
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-23 21:53:52 +00:00
Rebecca Stambler
0cdb17d11b internal/lsp: treat the module root as the workspace root, if available
This change expands the scope of a workspace to the whole module, if the
user is in module mode. This means that diagnostics will appear and will
be updated for the whole module, even if the user only opens a
subdirectory. Similarly, references and other such queries will always
return consistent results, no matter which directory the user opens.

A new "root" field is added to the view. This is either the view's
folder or its module root. Almost all uses of view.folder have been
changed to view.root.

Updates golang/go#32394

Change-Id: I46f401f7c44b1b8429505aa032e0c15e88c4e2ef
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244117
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2020-07-23 21:33:49 +00:00
Rebecca Stambler
b3d141ddef internal/lsp/cache: copy *packages.Config environment completely
I noticed a race in these logs:
https://build.golang.org/log/ec2915e97319de219284ed022338f2ebc549aff6.

We need to copy the environment and build flags for each config, since
we're treating the config as single use.

Change-Id: I9e717e688def088cb60f2b23b71d731e2b20b259
Reviewed-on: https://go-review.googlesource.com/c/tools/+/244118
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2020-07-23 19:57:34 +00:00
Rebecca Stambler
80cb79702c internal/lsp: don't publish duplicate diagnostics in one report
CL 242579 changed the mechanism of reporting diagnostics so that we now
combine reports from multiple sources. Previously, we overwrote existing
diagnostics if new ones were reported. This was fine because
source.Diagnostics generated all of the diagnostics for Go files, and
mod.Diagnostics generated all of the diagnostics for go.mod files.

Now, we combine diagnostics from both sources -- mod.Diagnostics can
generate reports for Go files. We may get duplicate reports for packages
with test variants, so now, we check for those and dedupe.

Change-Id: I42e98079b4eead380058dd029a3a0c72a1796ebb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243778
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2020-07-23 19:34:40 +00:00
Brayden Cloud
bd1e9de8d8 internal/lsp: separate test and benchmark codelens
This CL adds benchmarking by using the "-bench" flag for the test
command.

Change-Id: Idf714de1c6c3350d26a6874e7b4278927d0336fd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243159
Run-TryBot: Robert Findley <rfindley@google.com>
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2020-07-22 18:17:40 +00:00
Rebecca Stambler
6123e77877 internal/lsp: support go mod tidy on save without diagnostics
This change adds support for `go mod tidy` on save when users opt into
import organization on save. Previously, we supported this with the
go mod tidy command, but there's no need to do this when we already
have a ModTidyHandle available.

Change-Id: Ibb47b6a7611fd823dac2a3b4f3a43b9fbb3289b6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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2020-07-21 22:32:18 +00:00
Rebecca Stambler
b42efcd11c internal/lsp: try to parse diagnostics out of go list errors
This change attempts to parse diagnostics out of `go list` error
messages so that we can present them in a better way to the user. This
approach is definitely tailored to the unknown revision error described
in golang/go#38232, but we can modify it to handle other cases as well.

Fixes golang/go#38232

Change-Id: I0b0a8c39a189a127dc36894a25614535c804a3f0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242477
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2020-07-21 22:03:47 +00:00
Rebecca Stambler
0a5cd10191 internal/lsp: handle unknown revision in go.mod file
This change ensures that, when the initial workspace load fails, we
re-run it if the go.mod file changes. Previously, if a user opened a
workspace with a corrupt go.mod file, we never recovered.

To reinitialize the workspace on-demand, we use the initializeOnce field
as an indicator of whether or not we should reinitialize. Every call to
awaitInitialized (which is called by all functions that need the IWL),
passes through the initialization code. If a retry isn't necessary,
this is a no-op, but if it is, we will call the initialization logic.
Only the first attempt uses a detached context; subsequent attempts can
be canceled by their contexts.

To indicate that we should reinitialize, we call maybeReinitialize.
Right now, we only call this when the go.mod file changes. In the
future, we may need it in other cases.

Fixes golang/go#38232

Change-Id: I77eefebb0ac38fbd0fe2c7da09c864eba45b075f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242159
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2020-07-21 21:40:18 +00:00
Rebecca Stambler
acdb8c158a internal/lsp: handle on-disk file deletions for opened files
Previously, we only updated the opened file's overlay, but not the
snapshot. This meant that the snapshot was still operating with stale
data. Invalidating the snapshot creates a new snapshot with the correct
set of overlays.

The test is skipped because it will flake until we have a better caching
strategy for `go mod tidy` results.

Updates golang/go#40269

Change-Id: Ia8d1ae75127a1d18d8877923e7a5b25b7bd965ac
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243537
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-21 21:30:00 +00:00
Rebecca Stambler
5ea363182e internal/lsp: change the way that we pass arguments to command
Our approach to commands and their arguments has been ad-hoc until this
point. This CL creates a standard way of defining and passing the
arguments to different commands. The arguments to a command are now
json.RawMessages, so that we don't have to double encode. This also
allows us to check the expected number of arguments without defining
a struct for every command.

Change-Id: Ic765c9b059e8ec3e1985046d13bf321be21f16ab
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242697
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-21 16:30:27 +00:00
Pontus Leitzler
b8e13e1a4d internal/lsp: return the actual range from convenience code actions
Convenience code actions operates at line-by-line, but a line can
contain more than one fix.

To be able to tell them apart each response now return the actual
range as reported by the analyzer.

Fixes golang/go#40328

Change-Id: I9ffe4737653d2a5a6dafc3574e74975a71c71937
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243877
Run-TryBot: Pontus Leitzler <leitzler@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-21 15:44:06 +00:00
Rebecca Stambler
77f530d86f internal/lsp: handle deletion of file content
We had previously been treating file changes with no content in the same
way as the deletion of content. Now, we distinguish between the two.

Fixes golang/go#38424.

Change-Id: I44b338006af0c13a8a3f842844521789ea378470
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243577
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Reviewed-by: Robert Findley <rfindley@google.com>
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2020-07-21 03:22:37 +00:00
Rebecca Stambler
4025ed8474 internal/lsp: move fillstruct suggested fixes out of analysis
This change moves the suggested fixes logic for fillstruct out of the
analysis and into internal/lsp/source. This logic is then used as part
of a new fillstruct command. This command is returned along with the
code action results, to be executed only when the user accepts the code
action.

This led to a number of changes to testing. The suggested fix tests in
internal/lsp doesn't support executing commands, so we skip them. The
suggested fix tests in internal/lsp/source are changed to call
fillstruct directly. A new regtest is added to check the command
execution, which led to a few regtest changes.

Also, remove the `go mod tidy` code action, as it's made redundant by
the existence of the suggested fixes coming from internal/lsp/mod.

Change-Id: I35ca0aff1ace8f0097fe7cb57232997facb516a4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241983
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-20 20:42:44 +00:00
Josh Baum
6d307edf52 internal/lsp: support extract function
Extract function is a code action, similar to extract variable. After
highlighting a selection, if valid, the lightbulb appears to trigger
extraction. The current implementation does not allow users to
extract selections with a return statement.

Updates golang/go#37170

Change-Id: I5fc3b19cf7dbca4407ecf0cc37017661223614d1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241957
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Josh Baum <joshbaum@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-20 18:55:41 +00:00
Rebecca Stambler
9cbb971a18 internal/lsp: split only on the first = for Go environment variables
Follow-up from CL 243538.

Change-Id: I15ac8ba738fa5326b18f7b179bed8623f4c57cfd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243640
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2020-07-20 16:24:43 +00:00
Rebecca Stambler
e6549b8dc8 internal/lsp: don't re-run go env for every call to WriteEnv
This is unnecessary. It also saves a lot of time for the regtests.

Change-Id: Ifc12d4c8e0c215f336e958316d415bc7f30e5344
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243538
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-20 15:02:21 +00:00
Rebecca Stambler
6ddee64345 internal/lsp: add a configuration to enable/disable links in hover
I had previously suggested that users set LinkTarget to "" to avoid
links in the hover text. However, this work-around isn't perfect because
it also disables the documentLink behavior in other cases.

Change-Id: I3df948e2a2e4d2312998de65ccea8dfb404768ab
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243239
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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2020-07-17 02:43:01 +00:00
Rebecca Stambler
d518495ee8 internal/lsp: log errors for compute fix edits instead of returning
Fixes golang/go#40260

Change-Id: I69032b8cd6b32a262ecd3bb746ef6d1722966a51
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243238
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Reviewed-by: Robert Findley <rfindley@google.com>
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2020-07-17 02:25:49 +00:00
Rebecca Stambler
58eba7e750 internal/lsp: refactor go.mod diagnostics to simplify the API
Currently, diagnostics for modules that are missing from the go.mod
appear in the Go files in which those modules are imported. As a result,
the diagnostics were previously calculated as part of the Go file
diagnostic calculations. This is convoluted and required passing around
an extra map.

This CL puts that logic in the ModTidyHandle where it belongs.
The diagnostics for the Go files are combined from the multiple sources.

Also, added a skipped test for golang/go#39784, since this CL was
originally intended to be a fix for that issue...

Change-Id: Ic0f9aa235dcd56ea131a2339de9801346f715415
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242579
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-16 22:50:03 +00:00
Rob Findley
f2c07d7d8e internal/lsp/lsprpc: improvements to daemon logging
The gopls daemon had different default logging behavior than the sidecar
gopls: by default, the daemon was started with -logfile=auto.
Additionally, because most logs are reflected back to the forwarder, the
actual daemon logs have very little (if any) information.

This means that if you simply start gopls with -remote=auto, you'll get
a single logfile named /tmp/gopls-<pid>.log, which is mostly empty. This
is not a delightful experience.

Fix this via several improvements:
 + Log lifecycle events in the Daemon, to give the log a purpose.
 + Give the daemon a new default log location:
   /tmp/gopls-daemon-<pid>.log.
 + Don't pass -logfile=auto to the daemon by default.

Fixes golang/go#40105

Change-Id: I5e91ea98b4968c512bce76a596bbae441f461a66
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241440
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2020-07-16 19:33:22 +00:00
Rob Findley
cf799caead internal/lsp/regtest: simpler way to invert options
This is an alternative to CL 241739, preserving the exiting variadic
options pattern and just adding a helper method to put the options up
front.

All things considered, I think this is better. CL 241739 was too
complicated, and being able to reuse "curried" runners isn't actually
important.

Updates golang/go#39384

Change-Id: I7ecd80d310cac879520b2d1feebcf5bd5e96e89b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243057
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2020-07-16 18:20:50 +00:00
Rebecca Stambler
43ed94694c internal/lsp: don't keep track of closed overlays
getFile still returns a FileHandle, even if the file doesn't exist on
disk. Work-around this by checking if the file exists before adding
the file handle to the map.

Fixes golang/go#38498

Change-Id: Ie02679068b37bf4f3d19966c6cfcf2361086b1de
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242924
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2020-07-16 17:49:00 +00:00
Rebecca Stambler
e66011cbf8 internal/lsp: fix error in CL 242457
I didn't properly understand Heschi's comment, and missed a case where
we failed to return early.

Change-Id: I692c26678b2e659c6b748085bb4b16090e04472d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243117
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2020-07-16 17:41:35 +00:00
Rebecca Stambler
a8f9df4c95 internal/lsp: clean up the code lens code
This change refactors lens funcs to use only a FileHandle - each
code lens should manually compute a ParseGoHandle if it's needed. The
issue was that, if the code lens needed to also get a package, the
already parsed *ast.File was not necessarily the file used in
type-checking that package. I noticed that the code lens wasn't always
coming up.

Change-Id: Ic5a2c2b3d1010555acaa64ef8c6aa2484b8fbc9f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242920
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2020-07-16 13:43:26 +00:00
Rebecca Stambler
c80dc571df internal/lsp: refactor generate code lens code
This change moves the "generic" go generate code lens code into
progress.go. Fix up a few generate-specific things in the progress
writers.

The remaining generate code isn't much, and is moved into command.go.

Change-Id: I2b7b6279da2442c0b92758b9b3e259f25787fabc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242919
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2020-07-16 13:43:19 +00:00
Rebecca Stambler
ddb87c8c46 internal/lsp: add an importShortcut configuration
This configuration deals with the fact that VS Code has the same
shortcut for go-to-definition and clicking a link. Many users don't like
the behavior of this shortcut triggering both requests, so we allow
users to choose between each behavior.

Fixes golang/go#39065

Change-Id: I760c99c1fade4d157515d3b0fd647daf0c8314eb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242457
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2020-07-15 23:00:36 +00:00
Rebecca Stambler
4cea89713c internal/lsp: handle nil pointer in PackageStats
Fixes golang/go#40224

Change-Id: I9f3f194b1c115ff0242cbce89a36e20d9e21a41f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242797
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2020-07-15 19:57:38 +00:00
Rebecca Stambler
b42590c1b1 internal/lsp/source: handle nil pointer in newBuiltinSignature
Fixes golang/go#40230

Change-Id: I457dd3ef009c9df9293f66871acdd90dcc6e1dcc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242798
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2020-07-15 19:52:07 +00:00
Peter Weinbergr
9048b464a0 internal/lsp: avoid panic caused by assuming file ends with newline
importPrefix in format.go computes the end of the package statement
including a trailing newline. This causes a panic if the user has
not typed the newline. The code now checks for that case.

Fixes golang/go#40208

Change-Id: I4c5118a5de78027e6c5e6ed91dfddca81e38f7e9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242638
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-14 19:07:37 +00:00
Hyoyoung CHANG
6acd2ab80e internal/lsp: always show signature as the top line in hover
The current behavior is inconsistent across different configurations.
The signature is the top line for FullDocumentation, but the last line
for synopsis documentation.

Change-Id: I2fe1e1c7bfa38ae46fda06b0ecd4c7712b0e74af
GitHub-Last-Rev: d3b768558f21f518d1296b6fc776cf3974f441d9
GitHub-Pull-Request: golang/tools#241
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242104
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-13 23:52:42 +00:00
Rebecca Stambler
62a0bb781d gopls, internal/lsp: support an extra formatting hook for gofumpt
This change reworks CL 240118 to apply gofumpt directly as a formatter,
not an analyzer. Depending on how gofumpt changes, we may be able to use
it as an analyzer in the future, but for now it's just easier to add it
as a formatting hook.

Fixes golang/go#39805

Change-Id: I227fde4b1916d8a82557f30dfca88e155136dff5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241985
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2020-07-13 21:42:47 +00:00
Rebecca Stambler
f8240f79c3 internal/lsp: add changeMethods logic to rename check
This logic is directly copied from the refactor/rename package. See
https://github.com/golang/tools/blob/master/refactor/rename/rename.go#L321.

Fixes golang/go#39269

Change-Id: Ibe335aab37c495d2a960cb9da254b24b6fbac8e8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242158
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2020-07-13 19:50:33 +00:00
Rebecca Stambler
01425d7016 internal/lsp/source: add Vendor to list of supported commands
I wanted to add a regtest for this, but then immediately got stumped on
how to do it well. The best I've got is to add a helper that wraps
the client's call to executeCommand, but it's used in so many places that
an easier fix was to put it in executeCommand itself.

Fixes golang/go#40101

Change-Id: Iafb804fb77e57e6ac01e3de1d115058b21ac1954
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241984
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-13 19:07:48 +00:00
Rebecca Stambler
fd294ab11a internal/lsp: watch go.{mod,sum} files, as well as Go files
Not sure how this hasn't come up earlier. We aren't noticing file
changes on-disk for go.mod/go.sum files.

Fixes golang/vscode-go#297

Change-Id: I4532a252f330404515efec244a9c266a765e6bcb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242160
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-13 01:13:07 +00:00
Rebecca Stambler
7342f9734a internal/lsp/cmd: add a -vv flag for higher verbosity
Add a higher log level for the command-line. This uses the verboseOutput
setting.

Updates golang/go#40139

Change-Id: I9b7edcda12b0431058c9cfe1413b7c5fc016c026
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241857
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-11 15:58:55 +00:00
Rebecca Stambler
f1c4188a97 internal/lsp, go/packages: reproduce and fix golang/go#39646
This test exposes a lot of fundamental issues with `go list` overlays.
Now that we have the regression test framework, we can copy it over and
make any flakes completely reproducible by waiting for each change to
complete.

The issue here ended up being that initial workspace load returns
workspace packages with no associated files due to golang/go#39986.
Working around this allows invalidation to proceed as usual.

In the process of debugging this, I also noticed that packages can get
loaded as command-line-arguments even when we can get the correct
package path for them. It's pretty complicated to fix this, so
restructured the code a tiny bit and left a TODO. I'd like to come back
to this at some point, but it's not pressing since I was able to fix
this bug.

Fixes golang/go#39646.
Updates golang/go#39986.

Change-Id: Id6b08a5e92d28eddc731feb0ef3fd3b3fc69e64b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240098
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-07-10 04:28:08 +00:00
Rebecca Stambler
125cc70a40 internal/lsp: add new go.mod requires to files with unused require
This change addresses an underlying issue with the go.mod code, which is
that it was modifying go.mod files without cloning them. This could've
resulted in some ugly race conditions.

We also handle the fact that new dependencies weren't being added
cleanly to files that already had unused dependencies.

Fixes golang/go#39041

Change-Id: I96ee0052d8d29a25e24f0bda9688e780a0fa7442
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241443
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-10 04:15:23 +00:00
Rebecca Stambler
55a0fde516 internal/lsp: fix rename with Windows line endings
Replacing the text in the comment line-by-line prevents issues to do
with CRLF/LF line endings.

No test, because txtar expects LF line endings, and I didn't think it
was worth more invasive changes to handle this.

Fixes golang/go#39364.

Change-Id: Ia26b311a851396e4dde1954ebfc1b40c0a3c04fb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240757
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-10 04:00:52 +00:00
Rob Findley
e327e1019d internal/lsp/regtest: standardize on 20s timeout
The default regtest timeout was increased to 60s a while ago to try to
avoid flakes.

We think we've figured out the flakes, so drop it back down.  Start with
20s, since TestGOMODCACHE (which had overridden its timeout to 5s)
occasionally fails on freebsd:
https://build.golang.org/log/6c607c7fd3e886cf23127c958ae17637440fbc63

Change-Id: I10e6927985b8fb1d149070e204bd8ca120309c7b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240060
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-09 18:17:11 +00:00
Rob Findley
e404ca24fb internal/lsp/regtest: use a common directory for regtest sandboxes
For easier debugging (and less cruft if regtests are ctrl-c'ed), root
all regtest sandboxes in a common directory.

This also tries one last time to clean up the directory, and fails on an
error. This might be flaky on windows, but hasn't been so far...

Also give regtest sandboxes names derived from their test name.

Updates golang/go#39384
Updates golang/go#38490

Change-Id: Iae53c29e75f5eb2b8d938d205fbeb463ffc82eb2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240059
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-09 18:15:24 +00:00
Heschi Kreinick
df98bc6d45 internal/lsp/regtest: remove stray short timeout
Apparently 5 seconds is too short for the freebsd-race builder and we
care about that.

Fixes golang/go#40090.

Change-Id: I6dad57402ed18e7c9e01f695ada7cc8b0cf35fb4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241521
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-08 18:38:56 +00:00
Rebecca Stambler
3544e8c95d internal/lsp/regtest: add a regtest for golang/go#39296
Looks like the issue described in
https://github.com/golang/go/issues/39296#issuecomment-652058883 is
resolved with Go 1.15.

Fixes golang/go#39296

Change-Id: Ibe694281d4d4d40df3dc7bacc5837f593bb1dc5a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241398
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-08 18:30:29 +00:00
Heschi Kreinick
31b9a74881 internal/lsp/cache: handle missing mod file
If the config changes in non-module mode, don't look at the nonexistant mod file.

I actually caught this case after review but didn't finish the job.

Fixes golang/go#40121.

Change-Id: Ic888f7eab5f882e6ca79b046b5a3fb37b3b19e5c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241520
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-08 18:08:30 +00:00
Rebecca Stambler
7370b03448 internal/lsp: check if analysis enabled in convenience fixes
Change-Id: I49c7808ee07340cea0381f324b1fb113ec405213
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241519
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-08 18:02:25 +00:00
Rebecca Stambler
134513de88 internal/lsp/regtest: await IWL before running tests
This change makes these tests a little more resilient by making sure
that the initial workspace load is completed before we run them.

Change-Id: I24735da31cc045cb78dfb280e88136b5835351a6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241276
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-08 00:37:08 +00:00
Rebecca Stambler
d5a745333d internal/lsp/source: disable fillstruct by default
The discussion on golang/vscode-go#299 has uncovered the fact that
go/printer is very expensive, and we're calling it frequently on file
changes. Analyzers whose suggested fixes require the original file
content are generally posing issues; this is being discussed on
golang/go#40110.

Updates golang/vscode-go#299

Change-Id: I5cb370c9cb508203e463e7243fc781e75876fe30
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241321
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-08 00:01:38 +00:00
Heschi Kreinick
065b96d36c internal/lsp/cache: fix race in RunProcessEnvFunc
Changing build flags (-modfile) while work is happening in the
background causes races. Explicitly detect relevant configuration
changes and only modify the ProcessEnv then, when the resolver is
inactive after the call to ClearForNewMod.

This still leaves a very small window for a race: if refreshProcessEnv
has already captured env but not yet started priming the cache, it may
race with the modification. But I don't expect it to be a problem in
practice.

Fixes golang/go#39865.

Change-Id: I31c79f39be55975fee14aa0e548b060c46cdd882
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241317
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-07 22:21:32 +00:00
Josh Baum
9c9572d6f9 internal/lsp: extract highlighted selection to variable
I add a code action that triggers upon request of the user. A variable
name is generated manually for the extracted code because the LSP does
not support a user's ability to provide a name.

Change-Id: Id1ec19b49562b7cfbc2cd416378bec9bd021d82f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240182
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-07 21:12:28 +00:00
Heschi Kreinick
416e8f4faf internal/imports: require valid options, move LocalPrefix up
CL 239754 eagerly initialized the environment. This turns out to be a
problem for gopls, which calls ApplyFixes with no ProcessEnv.
Reinitializing it every time seriously harmed the performance of
unimported completions. Move back to lazy initialization.

Working with invalid options has caused a lot of confusion; this is only
the most recent. We have to maintain backwards compatibility in the
externally visible API, but everywhere else we can require fully
populated options. That includes the source byte slice and the options.

LocalPrefix is really more of an Option than an attribute of the
ProcessEnv, and it is needed in ApplyFixes where we really don't want to
have to pass a ProcessEnv. Move it up to Options.

Change-Id: Ib9466c375a640a521721da4587091bf93bbdaa3c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241159
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-07 20:02:13 +00:00
Josh Baum
9e0a013e85 internal/lsp/analysis/fillstruct: support anonymous structs
The previous implementation did not support filling anonymous structs.
This is distinct from filling a struct that has an anonymous
struct as a field. That field will still not be filled.
golang/go#39929 has been opened to address this limitation.

Fixes: golang/go#39803
Change-Id: Ia7ba9fda2bdee092d182e0a23829b9a6d9a4b986
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240463
Run-TryBot: Josh Baum <joshbaum@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-07 13:47:15 +00:00
Rebecca Stambler
682c4542fd all: update dependencies in go.mod file
CL 226639 changed the positions of the go.mod diagnostics (in a
negligible way), but the tests are quite brittle and can't handle the
different position. Rewrite this test as a regression test to handle it.

The special // indirect marker can be removed from the go/expect package
as a result, since it was only used in this one place.

Change-Id: I7d9a62e32e53d477838e65673635ed231c07b659
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240691
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-06 23:19:48 +00:00
Søren L. Hansen
95bc2bdf7e internal/lsp/source: handle nil pointer in comment completions
c.pkg.GetTypeInfo().ObjectOf(node.Name) will sometimes return nil.
Check for that and a few other things that c.found also checks for.

Fixes golang/go#40043

Change-Id: I4a2b40adbbd740323e10b3460f025b29cff74130
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241019
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-06 18:08:31 +00:00
zikaeroh
0cc1aa72b3 gopls/internal/hooks, internal/lsp/source: only match full words in link regexes
The current URL regexes (including xurls) match links in any part of a
string. However, this leads to odd underlining within words which just
so happen to have valid domain names as substrings. For example, a
comment which contains "reflect.DeepEqual" will match the URL regex as
"reflect.de" is a domain name.

Ensure that the URLs only match full regex words by adding \b around the
expressions. For xurls, this is done by pulling the expression out of
Relaxed() and recreating the Regexp.

While I'm here, make the non-gopls module expression prefer the longest
match, as xurls does.

Change-Id: I403db970fa1661c443b0693c03f8dee114f8eaff
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240738
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-02 04:49:44 +00:00
Rebecca Stambler
f01a4bec33 internal/lsp: support opening single files
This change permits starting gopls without a root URI or any workspace
folders. If no view is found for an opened file, we try to create a new
view based on the module root of that file. In GOPATH mode, we just
use the directory containing the file.

I wrote a regtest for this by adding a new configuration that gets
propagated to the sandbox. I'm not sure if this is the best way to do
that, so I'll let Rob advise.

Fixes golang/go#34160

Change-Id: I3deca3ac1b86b69eba416891a1c28fd35658a2ed
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240099
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-01 22:10:12 +00:00
Rebecca Stambler
ea7be8d74e internal/lsp/regtest: add regression tests for on-disk file changes
There are still many more cases to check, but this is a good starting
point. A few tests have skips in them because I encountered bugs, which
I plan to go back and fix.

Change-Id: I0b7bbeb632d38c09d6bdb1f4866d81a1690d6ca7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238917
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-01 22:06:37 +00:00
Muir Manders
1837592efa internal/lsp/source: speed up completion candidate formatting
Completion could be slow due to calls to astutil.PathEnclosingInterval
for every candidate during formatting. There were two reasons we
called PEI:

1. To properly render type alias names, we must refer to the AST
   because the alias name is not available in the typed world.
   Previously we would call PEI to find the *type.Var's
   corresponding *ast.Field, but now we have a PosToField cache that
   lets us jump straight from the types.Object's token.Pos to the
   corresponding *ast.Field.

2. To display an object's documentation we must refer to the AST. We
   need the object's declaring node and any containing ast.Decl. We
   now maintain a special PosToDecl cache so we can avoid the PEI call
   in this case as well.

We can't use a single cache for both because the *ast.Field's position
is present in both caches (but points to different nodes). The caches
are memoized to defer generation until they are needed and to save
work creating them if the *ast.Files haven't changed.

These changes speed up completing the fields of
github.com/aws/aws-sdk-go/service/ec2 from 18.5s to 45ms on my laptop.

Fixes golang/go#37450.

Change-Id: I25cc5ea39551db728a2348f346342ebebeddd049
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221021
Run-TryBot: Muir Manders <muir@mnd.rs>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-01 04:11:22 +00:00
Rebecca Stambler
9a0e069805 internal/lsp/cmd: change pre-filled issue header for gopls bug
Change-Id: I221f2e6a0dc41cfd8325df64607b5c625d69ca17
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240503
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2020-07-01 03:39:15 +00:00
Rebecca Stambler
a32c0cb1d5 internal/lsp: decorate error message from workspace/configuration
Fixes golang/go#39896

Change-Id: Ib63e3b4b716f6005b3cbbc92ede40fdbfc8ca22f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240619
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-01 00:03:37 +00:00
TheSecEng
b2d8b03366 internal/lsp: remove VS Code-specific completion hack
This hack was previously being used to correct the rankings for VS Code
Go users. This logic has since been moved into the VS Code Go plugin.

Change-Id: Ia6bff53eb2c6dbe479faa1fd0667d763837eea78
GitHub-Last-Rev: e7fed76b3f85b0db3b705cbb6945cecd855d2c7b
GitHub-Pull-Request: golang/tools#225
Reviewed-on: https://go-review.googlesource.com/c/tools/+/231098
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-30 15:48:51 +00:00
Rebecca Stambler
4bdfe1a3b7 internal/lsp/cache: handle a few possible panics in PackageStats
Change-Id: I50dbe8bf7d801e7325bdbe413368e85779511d85
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240183
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-30 15:45:28 +00:00
Rob Findley
aa94e735be internal/lsp/source: add a new symbolStyle configuration option
Add a symbolStyle configuration option, and use it to parameterize the
following behavior when computing workspace symbols:

 + package (default): include package name in the workspace symbol.
 + full: fully qualify the symbol by import path
 + dynamic: use as the symbol the shortest suffix of the full path that
   contains the match.

To implement this, expose package name in the source.Package interface.
To be consistent with other handling in the cache package, define a new
cache.packageName named string type, to avoid confusion with packageID
or packagePath (if confusing those two identifiers was a problem, surely
it is a potential problem for package name as well).

Change-Id: Ic8ed6ba5473b0523b97e677878e5e6bddfff10a7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236842
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
2020-06-26 17:13:37 +00:00
Paul Jolly
84cfedeb1e internal/lsp: fully qualify workspace Symbol matches
Fully qualify (using a package's import path) symbols when matching
them. This is a minimal change in preparation for later changes to add
more advanced query functionality to the workspace Symbol method.

Add more comprehensive regtest tests (covering case sensitive, case
insensitive and fuzzy matchers) in addition to updating lsp tests.

Change-Id: I675cde2f7b492158988cf9c3206a0a55fe29622a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/228123
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-26 16:54:09 +00:00
Rebecca Stambler
bcbc01e07a internal/lsp: add a new regtest to reproduce golang/go#39646
Change-Id: I51d8c66a83ecae1c8fc1f39c0e90a03a732c263b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240063
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-06-26 03:28:29 +00:00
Rob Findley
6506e20df3 internal/lsp/fake: explicitly set GOPACKAGESDRIVER=off in regtests
In the past, changes to GOPACKAGESDRIVER have led to some confusing
regtest failures. Explicitly set it off.

Updates golang/go#39384

Change-Id: I303a58380a5e46e6621c19b2edc40d43199bb343
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240058
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-25 21:18:23 +00:00
Rebecca Stambler
fadf93ffb2 internal/lsp: watch all files in the module and replace target
Previously, our file watching only considered the root directory of the
view, which may not include the entire module or its replaced
dependencies. Now we expand our watching to include the whole module.

As part of testing this, I noticed that VS Code's file watcher actually
only sends updates for files in the workspace, even if we request
notifications for all files in the module. I filed an issue to ask about
this: https://github.com/microsoft/vscode-languageserver-node/issues/641.

Change-Id: I9499d31aff273f69e9c117511e7985ff58b7fdc4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239198
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-25 21:08:52 +00:00
Heschi Kreinick
e31c80b82c all: rework goimports environment, support GOMODCACHE
This CL got away from me a little.

For a number of reasons, the existing goimports API of passing in values
for various GO* values was not working. For one, the number of necessary
variables kept growing. For another, we tried to avoid calling `go env`
in GOPATH mode by using `build.Default`, but that turns out to be buggy;
see golang/go#39838. And finally, it created massive confusion about
whether the values were intended to be read from the OS environment, or
fully evaluated by the `go` command.

There are only two users of the internal imports API, so there really
shouldn't need to be more than two modes. For the command line tool, we
have to call `go env` to deal with the `go/build` bug. So we just do it.
Tests use that same path, but can augment the enviroment to set
themselves up. In contrast, `gopls` needs to fully specify the
environment. It can simply pass in the fully evaluated GO* values.

Finally, make the change I was actually here to make: propagate
GOMODCACHE and use it where appropriate.

Fixes golang/go#39761.

Change-Id: I720c69839d91d66d98e94dfc5f065ba0279c5542
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239754
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2020-06-25 17:33:20 +00:00
Josh Baum
727c06e3f1 internal/lsp/analysis/fillstruct: correct pointer to builtin values
The current implementation correctly calls 'new' when filling a
pointer to a builtin type.

Fixes: golang/go#39854
Change-Id: I0c2b27bb57fd865c4376279059ad060608d48ba3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239978
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2020-06-25 16:34:51 +00:00
Rebecca Stambler
aa12c9ebf5 internal/lsp: handle panics due to line numbers in fillstruct
Change-Id: I90f3fd2daf180705048d494476acac5a213f5fb3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239751
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2020-06-25 15:39:20 +00:00
Rebecca Stambler
7a9acb0a45 internal/lsp/source: fix panic in test code lens
Change-Id: I727b2772c63752cb5d3bb4b9165f984b64adc842
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239752
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2020-06-24 22:30:20 +00:00
Rebecca Stambler
25775e59ac internal/memoize: add an error return to (*handle).Get
Fixes golang/go#36004

Change-Id: I8da7c21eaa9cf6ffac12aabdd6803d06781cef32
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239564
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2020-06-24 16:33:19 +00:00
Rebecca Stambler
f8e0ea3a3a internal/lsp/analysis/fillstruct: add indentation for struct fields
Getting the right indentation for the text in the AST proves to be a
little complicated. The most reasonable approach seems to be writing
out the AST, getting the lines with the struct definition on it,
and trimming whitespace to get the current indent. Then, we add this
indent to the struct fields in the new text.

Change-Id: I1cc3421d95edae61cfb662254ff3fb759b5c487f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239199
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2020-06-23 20:47:33 +00:00
Josh Baum
456ad74e14 internal: fill struct with initialized values instead of nil values
The previous implementation filled map, slice, channel, signature, and
pointer types with nil values rather than initializing these types.

Change-Id: I558446af31fdd8877db5eb3cd92b4004f5d5ab22
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239039
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2020-06-23 18:51:56 +00:00
Rebecca Stambler
1745ac5bc6 internal/lsp: refactor various module-specific handles in cache
This change separates out different functions of mod handles.
Previously, we had ModHandle and ModTidyHandle. ModHandle was used to
parse go.mod files and get the results of `go mod why` and possible
dependency upgrades.

Now, we factor this out into 4 handles: ParseModHandle, ModWhyHandle,
ModUpgradeHandle, and ModTidyHandle. This allows each handle to be
specific to its own functionality. It also simplifies the code a bit,
as the handles can be written in terms of ParseModHandles instead of
FileHandles.

I may have some follow-up CLs to refactor the `go mod tidy` logic out of
the cache package, though I'm no longer certain that that's a good
choice.

Change-Id: I8e12299dfdda7bb61b05903d9aa474461d7f4836
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239117
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2020-06-23 18:31:46 +00:00
Rebecca Stambler
20e05c1c8f internal/lsp: don't use -modfile for go mod commands
These are commands whose changes should be reflected in the existing
go.mod file, as they do not provide edits. Add a third way of running
the go command, explicitly without -modfile. Update the regression test
accordingly.

Change-Id: I866b5db83b504fae190e58c306c01a7a4296672d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239200
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2020-06-22 20:30:43 +00:00
Heschi Kreinick
4fd1c64487 internal/lsp/cache: fix ignored file check
The return of IgnoreFile. We continue using go list's ignore rules,
but only apply them to the part of the path underneath the source root.

This should be fixed to include replace targets once we have them.

Change-Id: I054fee8c12fc860a279b0d0c1fd670f44d78a63f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239288
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2020-06-22 19:29:24 +00:00
Josh Baum
0f592d2728 internal/lsp/analysis/fillstruct: use AST nodes to fill struct
The current implementation writes strings to the diagnostic instead
of creating new AST nodes.

Change-Id: Ibb37a93a3c43fb74ec5dc687091601e055c6e1b4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238198
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2020-06-19 21:01:11 +00:00
Rebecca Stambler
6c6fd98e38 internal/lsp: fix panic in computing diagnostics for module
We were returning empty diagnostics for an empty file.

Fixes golang/go#39696.

Change-Id: Idfd50980f4bf771f76ad7b7fb6180a5f712a92bf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239040
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2020-06-19 20:49:21 +00:00
Heschi Kreinick
8b7669898d internal/lsp/debug: save per-package stats in memory debug files
The per-package stats have proven pretty useful, and I don't want to
have to teach users how to save them. Create zip files and add them in.

Since some users may be sensitive about revealing any information about
the code, generate two variants: one with package names, and one
without.

Change-Id: Icc5631b4cebbbabfdd2fcea4a4cdf4f205dbcab9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239037
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2020-06-19 18:00:37 +00:00
Rebecca Stambler
6023b8da91 internal/lsp: use -modfile for import organization
Also add a regression test.

Fixes golang/go#39681.

Change-Id: I685fbe4255b9e8e067dacd84a6d464d0a2bbe1f1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238737
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2020-06-19 17:44:56 +00:00
Pontus Leitzler
aaae6734f9 internal/lsp/cmd: add example to cli help for -ocagent flag
I've forgotten to specify scheme a few times, and gopls is quiet
about invalid ocagent addresses.

Add an example to the CLI help output aid the users with the format
implicitly.

Change-Id: I89ba8a16c18dabff2b4b87b2235755c22ae71117
Reviewed-on: https://go-review.googlesource.com/c/tools/+/239057
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2020-06-19 16:26:05 +00:00
Pontus Leitzler
037be6a065 internal/lsp/source: support highlight of switch statements
Placing the cursor on a switch statement or corresponding break and call
document.Highlight will now highlight them.

Fixes golang/go#39275

Change-Id: Ib7e3ba0c6e78141ed3dd37cfd3b72b567b857247
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238478
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2020-06-19 02:36:21 +00:00
Rebecca Stambler
c7475b9d7f internal/lsp/source: refactor highlighting code
The current implementation has a number of helper functions that have to
thread through context, errors, converters, etc. Simplify the code by
factoring out the conversion to a protocol range into a final step.
There are probably further improvements that can be made too.

As part of debugging, I noticed that the cmdtest server does not get
shutdown once tests finish, which leads to excessive logging. Is closing
the test server connection enough to trigger shutdowns? It doesn't seem
to be.

Change-Id: Ia67666f6b8debccd120795bb24bd089620c0a87b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238377
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2020-06-18 15:59:44 +00:00
Rob Findley
20370b0cb4 internal/lsp: honor GOPRIVATE in documentLinks and go.mod hovers
Several fixes related to GOPRIVATE handling and links:
 + In Go source, fix links matching GOPRIVATE for external modules.
   Previously, in these cases we'd try to match <mod>@v1.2.3/<suffix>,
   which wasn't the correct input into the GOPRIVATE matching algorithm.
 + Similarly check GOPRIVATE for go.mod require statement hovers.
 + Likewise, for documentLink requests (both mod and source).
 + Move the existing hover regtest to link_test.go, and expand to cover
   all these cases.

Along the way, I encountered a couple apparent bugs, which I fixed:
 + Correctly handle the case where there is only one require in a go.mod
   file. This was exercised by the regtest, so took some debugging.
 + Only format links [like](this) if the requested format is actually
   markdown.

Fixes golang/go#36998

Change-Id: I92011821f646f2a7449dcca619483f83bdeb54b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238029
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2020-06-18 13:42:42 +00:00
Rob Findley
5fddd300b6 internal/lsp/cmd/test/cmdtest: shutdown connections on test completion
To prevent misleading errors from outstanding go command invocations at
test completion, properly shutdown the LSP connection before cleaning up
exported files.

Change-Id: I9ad175060fefc5b914e544c5f58b9b6658405edc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238546
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2020-06-18 11:25:59 +00:00
Rebecca Stambler
d15173dcc7 internal/lsp/cache: separate modTidyHandle out of modHandle
While working in this code, I was confused by the fact that modHandle
and modData were used for both ModHandle and ModTidyHandle. Separate out
the two so it's a little more clear. This is mostly a copy-paste, with a
few fields renamed to simplify them.

Change-Id: I20ea11c32a624fd250eabf901d09ebb05fbad062
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238337
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2020-06-18 03:14:02 +00:00
Rebecca Stambler
47c907e258 internal/lsp: use a new temporary go.mod for every go list call
Refactor internal/lsp/cache to use a new temporary go.mod file for each
go command invocation. This cleans up the abstraction in the source
package, as we no longer are aware of temporary go.mod files.

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

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

Change-Id: I90bc17a678b5df222ab598c8f7dbf6c6fdd393f6
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2020-06-18 02:37:23 +00:00
Heschi Kreinick
87be026d38 internal/lsp/regtest: move and re-enable TestRegenerateCgo
Revert https://golang.org/cl/234480, which was unnecessary, and move it
to a more appropriate file.

Change-Id: I3f5a3eccaf0ffe324fee8e27945a2e5ece2ff12c
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2020-06-17 21:29:13 +00:00
Heschi Kreinick
6222995d07 internal/lsp: handle deletion of workspace packages
When a workspace package is deleted, we need to stop trying to load it.
Check that every workspace package still has at least one .go file when
we copy them between snapshots.

I think this is correct, but even if it's not, orphaned file loading
should patch it up.

Fixes golang/go#38977.

Change-Id: I0b11010a40aac09f619f54b5ba02e2467b15a36c
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2020-06-17 16:12:49 +00:00
Rebecca Stambler
7f3f4b10a8 go/packages: correct package IDs for overlaid x tests
Bad go/packages results were being cached, causing unexpected behavior
when new x tests are created. This fix also allows us to enable a
regression test that had been previously disabled.

Change-Id: I93c05df2f4d32c6c8a43e9f5aaeeb30bc4a32f3a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238058
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2020-06-17 04:29:24 +00:00
Heschi Kreinick
b7b89dcb81 internal/lsp/cache: support minimal module compatibility in GOPATH
In GOPATH mode, you can import example.com/foo even if it has a go.mod
that says its path is example.com/foo/v2. Adjust our import path
resolution to support that case.

Fixes golang/go#39560.

Change-Id: I758a2220c579c4374084365c3a78a3a2bbd14b01
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238260
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2020-06-16 21:57:26 +00:00
Pontus Leitzler
dc31b401ab internal/lsp/source: avoid panic in rename check
In a case where the type info for an ast.CompositeLit isn't found in
forEachLexicalRef(...) gopls will panic.

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

Note the missing ')' after make.

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

Updates golang/go#39614

Change-Id: Ibb50b15ce4b31056f2f1da52a4dcab7b8b91a320
Reviewed-on: https://go-review.googlesource.com/c/tools/+/238042
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2020-06-16 19:50:46 +00:00
Rob Findley
b1f3cdd652 internal/lsp/regtest: add a regtest for hover handling of GOPRIVATE
Add a regtest to verify that GOPRIVATE identifiers are not given a link
to pkg.go.dev. For efficiency, as well as to exercise dynamic
configuration, do all this in a single regtest.

Updates golang/go#36998

Change-Id: I9102a11312db5c334fdbd30cce9ca2d2e19e9ac2
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2020-06-16 15:44:21 +00:00
Rob Findley
2b5917cebf internal/lsp/lsprpc: forward the go environment in initialize requests
The gopls workspace environment defaults to the process environment in
which gopls was started. This means that when switching environments,
gopls can potentially get a different environment when connecting as an
editor sidecar from when forwarding requests to the daemon.

To (hopefully mostly) mitigate this pain point, inject the Go
environment when forwarding the 'initialize' request, which contains
InitializationOptions containing the 'env' configuration. We could go
further and send the entire os.Environ(), but that seems problematic
both in its unbounded nature, and because in many cases the user may not
actually want to send their process env over the wire. Gopls behavior
should *mostly* be parameterized by gopls binary and Go env, and after
this change these should match for forwarder and daemon.

For go1.15, Explicitly set the GOMODCACHE environment variable in the
regtest sandbox. Without this, regtests were failing in the forwarded
environment because they implicitly shared a module cache.

Fixes golang/go#37830

Change-Id: Ic1b335506f8b481505eac9f74c0df6293dc07158
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234109
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2020-06-16 15:43:56 +00:00
Rebecca Stambler
6aa8f57aac internal/lsp: un-export (*snapshot).Config to limit it to cache
Limiting the Config to the view seems reasonable, considering that it is
only used to run the `go` command. I prefer just having the cache run
go commands, so that source doesn't have to deal with the environment.

This also enables CL 237517.

Change-Id: I639c082592de30e9682dc25cdd12c7751ddb4f97
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2020-06-15 22:28:25 +00:00
Rebecca Stambler
9fe02d1961 internal/gocommand: refactor API to always use *gocommand.Runner
We should always go through the runner to avoid load serialization
errors. This change also updates the comments and uses pointers to
Invocations consistently. This causes a few updates throughout x/tools.

This change also results in a few modifications to the go:generate code
lenses, as they operate on directories rather than file URIs.

Change-Id: I6306e761e68dfdd23f1b410e44aab0ffa85d234c
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2020-06-15 22:00:55 +00:00
Rebecca Stambler
e31b568ad1 internal/lsp: plumb fillstruct through analysis
Now that fillstruct is an analyzer, we can simplify the code that calls
it in code_action.go. We introduce a new class of analyzer --
convenience analyzers, which are closer to commands. These represent
suggestions that won't necessarily improve the quality or correctness of
your code, but they offer small helper functions for the user.

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

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

Change-Id: I7f0aa198b5ee9964a907d709bae6380093d4ef21
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237687
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2020-06-15 21:22:08 +00:00
Heschi Kreinick
a2fa627c4b internal/lsp/cache: don't skip x_tests
We were marking normal tests as workspace packages, but pruning x_tests.
Don't do that.

Fixes golang/go#39578.

Change-Id: Ia8eceea38e63ac17e40f50d6837de9c7a668469b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237943
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Reviewed-by: zikaeroh <zikaeroh@gmail.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-15 19:08:35 +00:00
Heschi Kreinick
1725ffee6d internal/lsp/cache: hide diagnostics for ignored dirs
The go command ignores go files in specially-named directories like
testdata. We probably still want to try to offer services like
autocomplete and jump-to-definition there, but diagnostics are less
likely to be helpful. As a compromise, just squash diagnostics.

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

Fixes golang/go#39563.

Change-Id: I0bc00639e68bd71ea55d867af36e07ef4ec780a1
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2020-06-15 17:27:23 +00:00
Josh Baum
a1e2396bbd internal/lsp: port fill struct into analysis framework
The current implementation of the fill struct tool is not a part of
the analysis framework. This commit moves the functionality from the
source directory to the analysis directory.

Change-Id: Ibe37b57f3e6680c8729932dbbe010a4642600e4a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237258
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2020-06-12 20:33:59 +00:00
Heschi Kreinick
4651fa3054 internal/lsp/debug: show per-package memory usage
Calculate and display very crude memory usage statistics. This is
complicated by various levels of sharing and indirection, so the numbers
should be taken with *large* grains of salt and interpreted mostly by
experts.

Still, the results are interesting and helpful.

Change-Id: Ia9aff974c7d5fddd63df0cfd5cecc08ead33cf84
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236163
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2020-06-12 20:10:52 +00:00
Rebecca Stambler
3c1b287bbd internal/lsp: await the initial workspace load in ModHandle
ModHandle races with the initial workspace load if the go.mod file does
not yet exist. We should await for the initial workspace load to
complete before proceeding with update codelenses, etc.

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

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

A few quick staticcheck fixes in the CL also.

Change-Id: Ia1ed5360ac754023c589ed526ec0ed3e94a79b2f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237637
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-12 18:06:40 +00:00
Ian Cottrell
742c5eb664 internal/lsp: fix the cache debug page
The cache does not know the sessions associated with it, so the
debug template cannot display them.

Change-Id: I9b043592351ddce097f4e74f3e9aa7a6ad24e613
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237618
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-06-12 02:23:31 +00:00
Heschi Kreinick
f520afa52e internal/lsp: remove Ignore feature
Ignore ignored the builtin package and files that start with _. The
latter should already be ignored by "go list". The former seems
like too much effort to me. People shouldn't edit random parts of the
stdlib, and ignoring changes to (e.g.) the Error interface seems like
the least of the trouble they can get themselves into.

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

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

Change-Id: I005b02a66b1a987c50a3074d53a2d28ff07d3324
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237597
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:55:14 +00:00
Heschi Kreinick
02f7de68dc internal/lsp/cache: vendored packages are not workspace packages
Most people aren't going to edit vendored packages; we don't need to
fully analyze them.

Fixes golang/go#38080.

Change-Id: I9c9a286b5340ecffe976b0ea652f1d3b4de4bd41
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237598
Run-TryBot: Heschi Kreinick <heschi@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:31:50 +00:00
Heschi Kreinick
ca43edf915 internal/lsp/cache: intermediate test variants aren't workspace packages
When you write a test in (say) the fmt package, you get a test variant
augmented with the test files. In many cases you also get test variants
of the things the fmt package depends on. The primary test variant,
(fmt [fmt.test]) is interesting to us, because it contains the tests.
But the intermediate variants (testing [fmt.test]) aren't -- the user
can only get to them indirectly. We certainly don't need to fully parse
them.

Treat intermediate test variants as non-workspace packages. This doesn't
accomplish much yet but paves the way for later optimizations.

Updates golang/go#36943.

Change-Id: I1a20abcd2d67767f07132a75a20f098be6f19a76
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236397
Run-TryBot: Heschi Kreinick <heschi@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:26:57 +00:00
Heschi Kreinick
ecd3fc4348 internal/lsp: read files eagerly
We use file identities pervasively throughout gopls. Prior to this
change, the identity is the modification date of an unopened file, or
the hash of an opened file. That means that opening a file changes its
identity, which causes unnecessary churn in the cache.

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

Incidental changes:

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

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

Change-Id: Ia2133bc527f71daf81c9d674951726a232ca5bc9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237037
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 22:11:59 +00:00
Rob Findley
782c6b3cc7 internal/lsp/regtest: fix context for shared server
The shared server was executing on ctx.Background(), which meant it
didn't have a debug.Instance. This resulted in logs being printed to
stderr, due to the fallback behavior of the global exporter.

Fixes golang/go#39130

Change-Id: Ibb968f78d69752452bec71a7abeff808b1cccb04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237583
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-06-11 19:17:43 +00:00
Rob Findley
c1702b46e6 internal/lsp/regtest: print RPC logs when verbose output is enabled
Use the -v flag to control whether RPC logs are always printed, rather
than a regtest specific flag.

Updates golang/go#39130

Change-Id: Ie6293815adee4b59defd80cfc015838cfbf2b3e8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/235920
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
2020-06-11 19:16:16 +00:00
pjw
99be2d6e79 internal/lsp: bring lsp protocol stubs up to date
The only substantial change is data types for CallHeirarchy.

util.ts has changed the hash, and adapted to a new source layout, plus
the usual pointless whitespace changes. code.ts has learned a little more
about typescript ASTs.

Change-Id: I9cb3a9a9034d46f4a479123779da3bb3474e4a42
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237377
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 18:15:06 +00:00
Josh Baum
40866c6c36 internal/lsp/analysis/fillreturns: implement matching in fillreturns
The existing implementation looks for matching types in the declaration
and the leftmost value in the return statement. Instead, the analyzer
now searches across all the values in the return statement to find one
that matches the type in the declaration. Additionally, if a value in
the return statement does not match any type in the declaration, it is
not overriden.

Change-Id: I4d4aed0ef67e59bfd886b44055d523a8c478255c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236962
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 16:18:57 +00:00
Ian Cottrell
54cf04ef09 internal/lsp: decouple client and server debug
This uses log messages to convey information to the debug system, which
has the benefit of logging even if the debug pages are not active and
also not requiring systems to reach into the debug system or require
extra lifetime tracking Not all things are decoupled yet as there are a
couple of places (notably the handshaker) that read information out of
the debug system.

Change-Id: Iec1f81c34ab3b11b3e3d6e6eb39b98ee5ed0d849
Reviewed-on: https://go-review.googlesource.com/c/tools/+/236337
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-06-11 13:49:48 +00:00
Heschi Kreinick
1fdcbd1300 internal/lsp/source: format fill_struct.go
Change-Id: Iaf238dfba6f51aed0a15f6ef2b231e1a1816f683
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237421
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-11 03:21:20 +00:00
Matthew Dempsky
2ee2e4c56a go/packages: move TypecheckCgo to packagesinternal
Updates golang/go#16623.
Updates golang/go#39072.

Change-Id: I6612cdac14faa5ad724ceb805e1d6c823b4046ff
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237423
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-10 22:20:39 +00:00