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Commit Graph

740 Commits

Author SHA1 Message Date
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
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
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
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
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
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
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-21 22:03:47 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
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>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-07-20 18:55:41 +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>
Reviewed-by: Robert Findley <rfindley@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-16 13:43:26 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-07-15 23:00:36 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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
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
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
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
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
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
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
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
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-06-24 22:30:20 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2020-06-22 19:29:24 +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
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-06-18 13:42:42 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237517
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-18 02:37:23 +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
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
2020-06-16 19:50:46 +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
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237600
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-15 22:28:25 +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
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-06-15 21:22:08 +00:00