Commit Graph

83 Commits

Author SHA1 Message Date
Robert Findley 37590b385d gopls: remove usage of golang.org/x/xerrors
As of golang/go#50827, gopls no longer supports building at 1.12, and so
usage of golang.org/x/xerrors can be replaced with the native support for
error wrapping introduced in Go 1.13.

Remove this usage as a step toward eliminating the xerrors dependency
from x/tools.

For golang/go#52442

Change-Id: Ibf459cc72402a30a6c2735dc620f76ed8a5e2525
Reviewed-on: https://go-review.googlesource.com/c/tools/+/401097
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-20 15:33:22 +00:00
Robert Findley 1ae27d3d3d internal/lsp/cache: don't offset invalid positions
The zero value of token.Pos is special: it determines IsValid(), which
has semantic significance in many places.

offsetPositions, which adjusts positions after AST mangling, was
adjusting all positions -- including invalid positions. As a result it
was making invalid positions valid, leaving a nonsensical AST.

Fix it to skip invalid positions.

Change-Id: I844f243f9a4a3f98ace32fe30e934410d11142dd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/361614
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
2021-11-05 15:19:55 +00:00
Rob Findley a55d5155d9 internal/lsp: export and move some objects related to metadata
In preparation for moving metadata related functionality to a separate
package, move around some types and export some symbols. This is purely
to reduce diffs in subsequent CLs, and contains no functional changes.

Change-Id: I24d4fbd71df78e4d7a84f6598cdf820b41d542a2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/340729
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-08-15 15:51:49 +00:00
Rob Findley d36a54b56b internal/lsp: improve package search in a couple places
When we open a file in a package, independent of whether it is in the
workspace, we type check in ParseFull mode. However, several other
code paths don't find this better parse mode.

We need a better abstraction, but for now improve a couple code paths
specifically for the purpose of fixing Hover content.

Updates golang/go#46158
Updates golang/go#46902

Change-Id: I34c0432fdba406d569ea963ab4366336068767a2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/333689
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-07-13 13:36:40 +00:00
Heschi Kreinick cd1d0887dc internal/lsp/cache: trim more stuff in ParseExported mode
Despite the name, ParseExported only hollowed out declarations -- it
didn't actually drop any from the AST. This leaves a fair amount of
unexported crud behind. Unfortunately, there are a *lot* of ways to
expose an unexported declaration from an exported one, and it can be
done across files. Because of that, discarding unexported declarations
requires a lot of work.

This CL implements a decent attempt at pruning as much as possible from
the AST in ParseExported mode.

First, we analyze the AST of all the files in the package for exported
uses of unexported identifiers, iterating to a fixed point. Then, we
type check those ASTs. If there are missing identifiers (probably due to
a bug in the dependency analysis) we use those errors to re-parse. After
that we give up and fall back to the older, less effective trimming. The
pkg type changes slightly to accomodate the new control flow.

We have to analyze all the files at once because an unexported type
might be exposed in another file. Unfortunately, that means we can't
parse a single file at a time any more -- the result of parsing a file
depends on the result of parsing its siblings. To avoid cache
corruption, we have to do the parsing directly in type checking,
uncached.

This, in turn, required changes to the PosTo* functions. Previously,
they operated just on files, but a file name is no longer sufficient to
get a ParseExported AST. Change them to work on Packages instead. I
squeezed in a bit of refactoring while I was touching them.

Change-Id: I61249144ffa43ad645ed38d79e873e3998b0f38d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/312471
Trust: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-05-11 17:48:41 +00:00
Heschi Kreinick 144d5ced6b internal/lsp: run type error analyzers as part of diagnostics
Type error analyzers can be viewed as enhancing type errors, rather
than analyzers in their own right. Create a source.DiagnosePackage
function that combines the list/parse/typecheck diagnostics with type
error analyzers. This allows us to remove some special cases from the
analysis path, and is a first step in removing all the special
handling for analysis quick fixes.

Along the way:
Pass pointers to source.Analyzer after I spent half an hour chasing a
loop capture bug. Spend a further 2-3 hours chasing slowdown in the
command tests as a result.

Move Unnecessary tag generation into diagnostic creation rather than
as a mutating post-processing step that required cloning diagnostics.

Change-Id: Id246667a9dcf484dc79516f92d5524261c435794
Reviewed-on: https://go-review.googlesource.com/c/tools/+/297879
Trust: Heschi Kreinick <heschi@google.com>
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Heschi Kreinick <heschi@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-03-03 21:51:40 +00:00
Heschi Kreinick 24439e3c78 internal/lsp/source: eliminate GetTypeCheckDiagnostics
Most callers of source.Package.GetDiagnostics do it via
GetTypeCheckDiagnostics. Push its logic up or down as appropriate and
delete it.

Rather than requiring fully populated maps of diagnostics, which was
rather subtle, call storeDiagnostics for every Go file in the package.

Change-Id: If43b0cc922af1013e80f969362246538df14985b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/297878
Trust: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-03-03 21:21:28 +00:00
Heschi Kreinick eb48d3f608 internal/lsp/cache: refactor diagnostic suppression
In typeCheckDiagnostics, we have logic to suppress go list and type
checking errors based on the presence of other errors. Nobody seems to
know why the logic is exactly what it is, and suppressing list errors
means that bad //go:embed patterns don't show up.

Intuitively, it makes sense to me that we don't want to type check if
listing or parsing fails: list errors mean that whole files may be
missing, and parsing errors may wipe out arbitrary chunks of files.
There's little point reporting errors from type checking that. However,
list errors and parse errors should be mostly orthogonal: go list
parses very little of the file and in practice only reports errors
parsing the package statement. So, at least for now, we report both
parse and list errors, and stop there if there are any.

Finally, move the suppression logic to the actual typeCheck function
that generates the diagnostics. typeCheckDiagnostics is the primary
consumer, but I think it's better to do the suppression at the source.

Because we are now showing list errors, and they are prone to getting
stuck due to bad overlay support, a couple of tests now require 1.16.

Change-Id: I7801e44c4d3da30bda61e0c1710a2f52de6215f5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/295414
Trust: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-03-02 01:39:17 +00:00
Heschi Kreinick 51ce8377eb internal/lsp: remove the source.Error type
source.Error and source.Diagnostic are almost identical types, used
arbitrarily in different parts of the code. This CL is the first step in
cleaning up that redundancy: it deletes the source.Error type.

To do that, I added the fields from source.Error to source.Diagnostic,
and made absolutely no other semantic code changes -- I just renamed
things that were named Error to Diagnostic. With only aesthetic concerns
in play, I hope this CL will be easy to review. The next CL will clean
up all the stupid-looking code that converts a Diagnostic to a
Diagnostic, etc.

Change-Id: I1298cc8144c686b8a37fc2cc106930105e511353
Reviewed-on: https://go-review.googlesource.com/c/tools/+/288214
Trust: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2021-02-02 20:40:51 +00:00
Rebecca Stambler 5cdc27446b internal/lsp: remove the last diagnostics pop-up warning
The "you are neither in a module nor your GOPATH" warning doesn't fit
our current notification style, so adjust it to appear as a progress
report and clean up the associated tests.

Change-Id: I32b96f17f3b9715403e465e3e0f9705f5d859147
Reviewed-on: https://go-review.googlesource.com/c/tools/+/275537
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-12-08 23:26:54 +00:00
Rebecca Stambler a0ef9b62de internal/lsp: prepare for deletion of view.modURI
Splitting this CL out of CL 257417 to minimize the number of changes.
A few of the view's methods are moved to the snapshot, as they will
soon rely on the snapshot's modules field. Some dead code is also
deleted.

We now populate the snapshot's modules field even when
ExperimentalWorkspaceModule is not true, but we stop looking for modules
after searching the view's root.

Change-Id: Id0068ec10fafcfa6f7694dfcb8aaee8cb025078f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/257961
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-09-28 20:19:43 +00:00
Rebecca Stambler f4cefd1cb5 internal/lsp: enable multi-module workspace mode by default in tests
This change enables the multi-module workspace mode by default, so that
we can catch all of the test failures and edge cases. It is still
disabled in GOPATH mode and for any workspaces that contain a module
with a vendor directory.

A few minor changes had to be made to handle changes caused by the
workspace module pseudoversions.

Updates golang/go#32394

Change-Id: Ib433b269dfc435d73365677945057c1c2cbb1869
Reviewed-on: https://go-review.googlesource.com/c/tools/+/254317
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-09-15 20:16:39 +00:00
Rebecca Stambler d179df38ff internal/lsp/cache: automatically construct the workspace module
This change adds an experimental configuration, which when enabled,
shifts gopls to operate in multi-module mode. It implements the
super-module as described in
https://github.com/golang/proposal/blob/master/design/37720-gopls-workspaces.md.
Replace directives are also added when a workspace module requires
another workspace module (which has not yet been mentioned in the design
doc).

A user-provided workspace gopls.mod file is not yet supported, as it is
not yet testable. Clients will need to add support for change
notifications for the gopls.mod once it is added.

Updates golang/go#32394

Change-Id: I5089358603bca34c5c8db9e5a00f93e1cca0b93f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247819
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-09-11 04:00:25 +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
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 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
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
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
Michael Matloob 10921354bc go/packages: add a Module field to the Package struct
This change introduces Module and ModuleError struct types to the
packages package with the same types as defined in the cmd/go
documentation for module information output by go list (with the
exception of the Module type's Versions and Update fields).
go/packages will fill the module struct with the module information
output by go list. Drivers that support modules can also provide
module information by filling the Module fields in the packages in
their driverResponses.

Fixes golang/go#35921

Change-Id: Icbdf79869f09d26f6a01c3670146ace4f6ffa25e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/234219
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-05-19 14:27:18 +00:00
Rebecca Stambler 3bd20875a2 internal/lsp/cache: hide type errors if we fix up the AST
I was curious about why were logging errors during type-checking in
tests, and the answer turned out to be a bit more sinister than I
expected. We were getting type error messages without filepaths, so I
tried to reproduce it in the playground and wasn't able to. I realized
that these errors were coming from were coming from the "fixed" version
of the AST that we pass to the type checker.

Adding fake positions to our fake Cond statements trivially fixes the
logging issue, but it does nothing to handle the fact that the error
makes no sense to the user - because it applies to something that's not
in the source code. I figured we have two options: (1) skip type errors
for all packages with "fixed" ASTs, or (2) add something to the error
messages to indicate that the source code may not match. Starting with
(1) here, and if it becomes a problem, we can move to 2. All ASTs that
we fix have *ast.BadExpr in them, meaning that, by definition they have
parse errors which we will preferentially show those errors to users in
diagnostics (so I'm not sure how to test this).

Change-Id: I17733968aa15f989cdd3e4e7261c4f4fe9b97495
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227557
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-10 04:07:51 +00:00
Rebecca Stambler 4d14fc9c00 internal/lsp: add type error fixes to existing diagnostics
This change is the first step in handling golang/go#38136. Instead of
creating multiple diagnostic reports for type error analyzers, we add
suggested fixes to the existing reports. To match the analyzers for
FindAnalysisError, we add an ErrorMatch function to source.Analyzer.

This is not an ideal solution, but it was the best one I could come up
with without modifying the go/analysis API. analysisinternal could be
used for this purpose, but it seemed to complicated to be worth it, and
this is fairly simple. I think that go/analysis itself might need to be
extended for type error analyzers, but these temporary measures will
help us understand the kinds of features we need for type error
analyzers.

A follow-up CL might be to not add reports for type error analyzers
until the end of source.Diagnostic, which would remove the need for the
look-up.

Fixes golang/go#38136

Change-Id: I25bc6396b09d49facecd918bf5591d2d5bdf1b3a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226777
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-04-08 01:45:16 +00:00
Rebecca Stambler 3304cfb00f internal/lsp: temporarily disable type error analyzers by default
If we release gopls/v0.4.0 soon, we should keep these new analyzers off
by default. They were just merged, so they haven't been used enough to
be enabled, I think. We'll turn them on by default for gopls/v0.5.0.

Also, ended up creating a helper function to check if analysis has been
abled (which fixed a small bug in FindAnalysisError), and another helper
function to enable all analyses for testing purposes.

Updates golang/go#38212

Change-Id: I5ee94b3582dfc0863978650fc6ce51bfa0606c13
Reviewed-on: https://go-review.googlesource.com/c/tools/+/226962
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
2020-04-02 16:54:32 +00:00
Rohan Challa 42235f6384 internal/lsp: add support for type error analyzers
This change adds support within gopls for analyzers that work with type errors to provide suggested fixes.

Updates golang/go#34644

Change-Id: Ia8929173752fda6bd84a9edaabd310e758f25fe8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222761
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-27 17:27:16 +00:00
Rohan Challa e46a7b92c0 internal/lsp: add support for sourceFixAll analyzers
This change adds support for analyzers that have suggested fixes of the kind Source.FixAll. This will allow these fixes to be applied on save if the user desires.

To auto apply these fixes on save, make sure your settings.json looks like:

"[go]": {
	"editor.codeActionsOnSave": {
		...
		"source.fixAll": true,
		...
	},
	...
}

Update golang/go#37221

Change-Id: I534e4f6c8c51ec2848cf2899aab68f587ba68423
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223658
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 20:01:16 +00:00
Rohan Challa 02a6ca6dc3 internal/lsp: change disabledAnalyses setting to be general
This change removes the disabledAnalyses setting and replaces it with a more general feature named "analyses". This will allow users to opt in as well as opt out of analyzers that they do not find useful. This also updates some documentation to show users what analyzers gopls is using and which are enabled by default.

Change-Id: Id3239b4c4c9667e834f262c889270d14fdba0f93
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223662
Run-TryBot: Rohan Challa <rohan@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-03-26 19:30:34 +00:00
Rohan Challa 7c4b6277d7 internal/lsp: add module versions from "go list" to pkg.go.dev links
This change appends to the pkg.go.dev link the version of the module that is being used. To get this functionality, go/packages.Package now contains a module field which gets populated from the "go list" call. This module field is then used to get the version of the module that we are linking to.

Updates golang/go#36501

Change-Id: I9668a6da0fd3ec8f4cde017986419c8d28196765
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219079
Run-TryBot: Rohan Challa <rohan@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-19 19:55:21 +00:00
Muir Manders 49b8ac185c internal/lsp/cache: add file contents to ParseGoHandle
Currently there is no need for this because the file contents are part
of the file handle. This change is in preparation for an impending
improvement that tweaks the source code during the parse stage to fix
certain kind of terminal parse errors. Any code that wants to use
an *ast.File or *token.File in conjunction with the file contents
needs access to the doctored source code so things line up.

Change-Id: I59d83d3d6150aa1264761aa2c1f6c1269075a2ce
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218979
Run-TryBot: Muir Manders <muir@mnd.rs>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-02-13 05:05:14 +00:00
Rebecca Stambler 67a4523381 internal/lsp: determine parse mode based on workspace packages
Our current invariant is that all workspace packages are parsed in full
mode, and all dependencies are parsed in exported mode. We can rely on
this, as well as the fact that workspace packages are set during
metadata loads, to reduce the amount of plumbing the mode requires.W

Change-Id: Ib9406ca3c0dc2c81c7ee3158407f28022924d4d0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217139
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-04 23:03:16 +00:00
Rebecca Stambler ab391d50b5 internal/lsp: don't show links in hover for test functions
source.Identifier previously was used for references and rename, so it
needed to take a package policy. Now, it's only used for definition and
hover, so it should always be the narrowest package handle. We can use
this fact to determine if the identifier is located in its declaring
package, and if that package is a test variant, we don't link to the
documentation on pkg.go.dev, since it doesn't exist.

Change-Id: I5686828858a3feafb8ff2e4c5964b562f66db9fa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217137
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-03 21:56:10 +00:00
Rebecca Stambler e0332898b9 internal/lsp: push more build-specific logic into the view
The view should really be able to determine if it's valid, not the
source package. Expand moduleInformation to be buildInfo, and use it to
collect additional details.

Use this information to determine if we should load a view's
subdirectories as part of the initial workspace load. If a module is
initialized, we will recreate the view, so we should be fine. Not sure
what will happen if the directory is moved into GOPATH, but that should
be less of a concern (I think).

Fixes golang/go#35818.

Change-Id: Ic8ceedd37386b1653b8965c64d9ba8953778ab78
Reviewed-on: https://go-review.googlesource.com/c/tools/+/216143
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2020-01-24 21:10:25 +00:00
Rebecca Stambler 234df48a20 internal/lsp: load metadata for a single package ID, when needed
The metadata for the workspace packages may not be available when we
need it, so we should allow loading a single package ID. This can be
improved in follow-up CLs by consolidating the individual IDs into one
call to packages.Load. Some adjustments from CL 212102 were split out
into this CL.

Change-Id: I173a79a3cb136530bc99d093f1c2be189eac8ce2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212628
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Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-30 21:09:35 +00:00
Rebecca Stambler d7101b74a4 internal/lsp: set version correctly after textDocument/didOpen
The early return logic for didOpen events in
(*snapshot).invalidateContent was preventing the creation of a new
snapshot, which was in turn stopping the versions from being updated.

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

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

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

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

Updates golang/go#35720.

Change-Id: I9f96872a9a592bf0e11da27ebd8976c6db8752c9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208502
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-25 19:20:50 +00:00
Heschi Kreinick 8fd459516a internal/lsp: rename Files to CompiledGoFiles
As we improve support for cgo we'll need to reference GoFiles, not just
CompiledGoFiles. "Files" is right out.

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

Updates golang/go#35720.

Change-Id: I97a6ebf5b395535de0d5f4f8b3f84b46ca34643f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/208101
Run-TryBot: Heschi Kreinick <heschi@google.com>
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Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-20 22:19:51 +00:00
Rebecca Stambler ad01d5993d internal/lsp: run diagnostics on the entire workspace
This change runs diagnostics on all packages in the workspace, instead
of just open files. We also want to avoid invalidating the type
information for a newly-opened file (since we should have it be default
now), so handle that case.

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

Change-Id: Ifba18d77a700cda79ec79f66174de0e7f13fe319
Reviewed-on: https://go-review.googlesource.com/c/tools/+/207353
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
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Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-11-20 00:10:58 +00:00
Rebecca Stambler bc1376d635 internal/lsp: look up files in packages by position instead of URI
This change makes sure that we only return files that contain the given
position. There are a few instances of needing to look up files by URI
in the internal/lsp/cache package, so use an unexported package for
that. This allows us to remove some code in the implementations code.

Change-Id: Ifa7a62c67271826e6c632e4c88667d60f8b760c4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/206880
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-11-13 16:34:02 +00:00
Heschi Kreinick 818555187f internal/lsp/source: attach Package to completions when available
Unimported completions now try to pull Packages from everywhere, not
just the transitive dependencies of the current package. That confused
the import formatting code, which only looked at deps. Pass the Package
along with the import suggestion, and use it when it's present.

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

Fixes golang/go#35359.

Change-Id: Ia8ca923e46723e855ddd2da7611e6eb13c02bb4f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/205501
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-11-05 20:21:09 +00:00
Rebecca Stambler 8456940f41 internal/lsp: remove the pkg.view field, in preparation for CL 204079
This change encompasses the refactorings needed to correctly implement
CL 204079. The goal of this CL is to make the actual relevant diffs more
clear.

Change-Id: I38acfd436e2380be790910e01b6e37d8280e9100
Reviewed-on: https://go-review.googlesource.com/c/tools/+/204139
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-29 23:14:01 +00:00
Rebecca Stambler 3d91e92cde internal/lsp: stop caching diagnostics on the package
Now that we are using the memoize package to cache analysis results, we
can use that cache for suggested fixes.

Change-Id: I42905a6fe575f49d38979d53d58ea8ec59210ae0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203278
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-10-24 22:03:59 +00:00
Rebecca Stambler 2b779830f9 internal/lsp: don't associate package with snapshot
This change effectively reverts CL 202039. This CL was a mistake, as it
creates a cycle. Snapshots hold CheckPackageHandles, which in turn hold
pkgs.

Change-Id: I944304cb365f0ef98b5e54ea38edea6cece40453
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202740
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-10-23 20:24:04 +00:00
Rebecca Stambler 3057e18543 internal/lsp: move error range computations into cache package
A continuation of CL 202298, only for analysis errors.

Change-Id: I957d52cef31938ef66be73463e92695a5b56869c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202540
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-21 22:12:58 +00:00
Rebecca Stambler 747b8b11d4 internal/lsp: refactor error handling code in type-checking
This change adds a source.Error type which is used to collect the error
information that comes out of the loading, parsing, and type checking
stages. We also add specific sources per-error, rather than having them
all be labeled as "LSP".

This change will enable follow-ups that do a better job of extracting
error ranges.

Change-Id: I3fbb5e42d66aa2c5bb1b2f41d1eadfc45f3a749b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202298
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-21 18:57:46 +00:00
Rebecca Stambler 0bbdbb2ef6 internal/lsp: associate package with its snapshot
A package really should always be associated with its snapshot rather
than its view. This eliminates some extra parameters in a few utility
functions.

Change-Id: I60f9b7286e0072d3268602f6bd32052a3d2e5559
Reviewed-on: https://go-review.googlesource.com/c/tools/+/202039
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-18 19:08:19 +00:00
Rebecca Stambler f0068bd333 internal/lsp: remove misleading check span
This span resulted in misleading information, since it would appear any
time you called the Check function. This function often returns cached
results, so it's not particularly useful.

Change-Id: I26be652a99b906fb2e8703ff9af86fbe2ef5fc5d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/201219
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Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-16 19:48:01 +00:00
Rebecca Stambler f936694f27 internal/lsp: add analyses to the snapshot
This change makes sure that actionHandles are cached within the
snapshot, to minimize the cost of re-computing action handles on each
run of go/analysis.

Change-Id: If6191c5224285eb207aebb997787ea551a47fbaa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/201098
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2019-10-15 15:04:14 +00:00
Rebecca Stambler b53505e708 internal/lsp: cache analysis using memoize package
This change moves to the approach of caching the analysis using the
memoize package. This means that we will do less work, as we no longer
need to recompute results that are unchanged. The cache key for an
analysis is simply the key of the CheckPackageHandle, along with the
name of the analyzer.

Change-Id: I0e589ccf088ff1de5670401b7207ffa77a254ceb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/200817
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2019-10-14 17:19:42 +00:00
Rebecca Stambler 9901302c21 internal/lsp: use dependencies in cache keys
This change includes dependencies in the cache keys for
CheckPackageHandles. This should fix the issue with propagating results
to reverse dependencies.

Updates golang/go#34410

Change-Id: I025b7f0d6b0dcaa89c3461ebd94eadd35de4955f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/198317
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2019-10-04 02:16:33 +00:00
Rebecca Stambler f0a16743a2 internal/lsp: address staticcheck warnings
Change-Id: I67c689d31b61425b1eec8b4719e906ce26777759
Reviewed-on: https://go-review.googlesource.com/c/tools/+/198441
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2019-10-04 02:16:23 +00:00
Rebecca Stambler 57610eddc9 internal/lsp: rework snapshots and cache FileHandles per-snapshot
This change does not complete the work to handle snapshots correctly,
but it does implement the behavior of re-building the snapshot on each
file invalidation.

It also moves to the approach of caching the FileHandles on the snapshot,
rather than in the goFile object, which is now not necessary.

Finally, this change shifts the logic of metadata invalidation into the
content invalidation step, so there is less logic to decide if we should
re-load a package or not.

Change-Id: I18387c385fb070da4db1302bf97035ce6328b5c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/197799
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2019-10-01 16:26:22 +00:00