This change replaces various uses of FileSet with either
nothing (when the parameter wasn't really needed) or token.File.
Notably, astutil.Imports was being used to extract the imports
of a file (available at ast.File.Imports), forcing a number
of wrappers to have a FileSet parameter.
Also, simplify various expressions file.Position().Line to file.Line().
Change-Id: I19fe86a18aba50352275f77ed737513744d3930c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/410366
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It turns out PointSpan was only ever used as part of an oft repeated
pattern to get a token.Pos from a protocol position. Cut out the
middle.
Change-Id: I0b2c0fc3d335e6bbd3c1ac72c6f75e2c40c60ca5
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408717
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This eliminates some duplication, and lays the groundwork for removing
the use of token.File within ColumnMapper.
Change-Id: I54fe570bfc4f7bca0da643b8727e890dc6343208
Reviewed-on: https://go-review.googlesource.com/c/tools/+/406135
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The TokenConverter has been trimmed down to a thin wrapper around
token.File, and can now be removed.
Change-Id: I9985492274c88e6a13e6d62dadab5595c75c7840
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Eliminate the need to work around newline terminated files in
completion, by storing selection ranges as token.Pos and using an
lsppos.TokenMapper derived from the file content, which does not have
problems with newline termination.
This simplifies the completion logic, and removes the last use of
MappedRange.SpanRange, which is an inconisitent API in that it returns
positions in the compiled source, rather than edited source.
Change-Id: I65232787956325172b48fd42d85cbb598039ee5a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407889
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Due to not having a pointer receiver, memoization of the computed
MappedRange.protocolRange had no effect.
Rather than fix the memoization, just remove it since it has apparently
not affected performance significantly.
Change-Id: Ib34becef44dca4074dcc7c8af93883d9a1060f8d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/408716
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CL 405546 introduced a latent bug in MappedRange, because it naively
used the wrong TokenConverter to convert mapped positions to offsets.
This was detected via related clean-up work in another CL. Fix this by
passing the correct converter from MappedRange.Range. Add a test that
would have demonstrated the breakage.
More cleanup is needed here. It is subtle that MappedRange.Converter
maps the adjusted position for its start and end, and there may be some
places where this invariant has been broken over the years.
Add additional documentation and bug reports.
Change-Id: If7f177894bac1242ddcc1786e79c7559455e9291
Reviewed-on: https://go-review.googlesource.com/c/tools/+/407887
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Add additional bug reporting related to position invariants, and update
marker test runners to panic on encountered bugs.
This revealed a panic on older Go versions, where we try to create a
range for a missing package name span. Lift the check into the caller
for this case, and leave a big comment explaining that
checkForOrphanedFile probably shouldn't be so tolerant of invalid calls.
Change-Id: Ie16a07afba0f8a5682cca50ad8f04450bfa2da65
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Our mechanism for reporting internal bugs doesn't work unless we
actually notice them. Add an undocumented option to receive showMessage
dialogs on the first bug occurring server-side.
Change-Id: I259a4c13161271c350fae06dc6ab0e1621725c92
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The only real implementation of position conversion was via a
*token.File, so refactor the converter logic to eliminate the Converter
interface, and just use a single converter implementation that uses a
*token.File to convert between offsets and positions.
This change is meant to be a zero-impact refactoring for non-test code.
As such, I abstained from panicking in several places where it would
make sense. In later CLs, once the bug reporting API lands, we can
insert bug reports in these places.
Change-Id: Id2e503acd80d089bc5d73e983215784015471f04
Reviewed-on: https://go-review.googlesource.com/c/tools/+/405546
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The existing debug.Bug mechanism for reporting internal bugs is
insufficient for several reasons:
- It requires a context, which is not always available.
- By being defined in the debug package, it is subject to import
cycles.
- It is too complicated. Listening for bugs requires understanding the
event package.
Replace this with a simpler 'bug' package with no dependencies, that
allows reporting, listing, and listening on internal bugs. Hopefully
this will fulfill the goal of debug.Bug, to help us track down rare
bugs.
Change-Id: I30cab58429b29bd2d944d62e94f5657e40a760fc
Reviewed-on: https://go-review.googlesource.com/c/tools/+/399623
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Reviewed-by: Alan Donovan <adonovan@google.com>
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In passing I noticed that this three-way comparison
is not (anti)symmetric. Such comparisons should consist
of a list of pairs of tests of this form:
if x.key1 < y.key1 { return -1 }
if x.key1 > y.key1 { return +1 }
...key2, etc...
return 0
Also in passing:
- simplify panic-proof debug string function.
- augment doc comment of (*Server).beginFileRequest
Change-Id: Idcd0844ea4e96fc2dee5bbc270f5a200b5c27aa0
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This CL adds a new analyzer for //go:embed directive, which
checks for the "embed" import.
Along with it, it improves doc for analysistest.Run for
comments of the the form "//...// want..." or
"//...// want..."
Updates #50262
Change-Id: I60ef0ab740feadd4fff3a4d758123b27ceda0bc6
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This avoids an import cycle that prevented these wrappers from being
used in the lsppos package.
Change-Id: I9eedd256db983dfcf962edba39e3d4f3a1aabdeb
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For use-cases that work only with token.Pos and protocol.Position, the
span package is unnecessarily indirect, and inefficient. It also loses
information about newline termination, and handles positions within CRLF
line endings incorrectly.
The lsppos package was written to bypass this complexity, but had
limited use and lacked tests.
Add tests, and an wrapper API that operates on token.Pos. Also fix
source.TestTokenOffset to not panic, and add a temporary exemption of
the new token.Offset usage.
This change also fixes position calculation in the case of empty file
content. The mapper now finds position (0, 0) at offset 0 of an empty
file.
Change-Id: I639bd3fac78a127b1c8eddad60b890449901c68c
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While working on golang/go#52715, I discovered an infinite recursion in
gopls' completion logic: eachField assumes a finiteness of type pointers.
It is almost certainly a go/types bug that type-checked types expand
infinitely, but nevertheless we should use the more accurate
typeutil.Map for short-circuiting our search.
Change-Id: Ib1c7125e624f42882869acd4e0476e317d4da056
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Give placeholders for type params in func literal completions. For
example:
func foo[T any](func(T) T) {}
foo(<>)
Will now give "func(<T>) <T> {}" where <> denotes a placeholder.
Change-Id: Iadde73ed6b88e1410c28dfa33a20ab6a51235c93
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In cases like:
type foo[T any] struct{}
func bar[T any](foo[T]) {}
bar[int](<A>)
bar(<B>)
At <A> we will now offer "foo[int]{}". At <B> we will now offer a
snippet "foo[<T>]{}" which lets the user fill in the type arg.
Note that we have no knowledge of type inference, so you can be left
with superfluous type args after completion.
Change-Id: Ia7d63284f3317d9367864fdae3e3f9ae68fdff1a
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In cases like:
func foo[T int | string](T) {}
foo[int](<>)
Previously at <> we would favor int and string candidates. This is
because go/types doesn't instantiate foo in this case (for some
reason). Work around the issue by using types.CheckExpr to re-check
the *ast.CallExpr.Fun. CheckExpr seems to do a better than a full type
check in the face of errors.
Updates golang/go#52291
Updates golang/go#52503
Change-Id: Ide436428f3232db2e06ea3cc22ea250edbf28685
Reviewed-on: https://go-review.googlesource.com/c/tools/+/400614
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Update FindHoverContext to retrieve & render package documentation for a hovered package. Add a regtest for this hovering feature.
Updates golang/go#51848
Change-Id: If57396d59be9c4cf7e09b64e39832de6f996c7ca
Reviewed-on: https://go-review.googlesource.com/c/tools/+/400820
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In cases like:
func foo[A int|string](a A) {}
foo[_](<>)
We now prefer ints and strings at <> by matching against the type
constraint. Note that even if "_" is replaced with "int", we still
prefer strings since the type checker doesn't seem to want to
instantiate foo unless the params check out.
Change-Id: I0e7acfef0775752a96fcfe23e7e2e3d939820eee
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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
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Gofmt to update doc comments to the new formatting.
(There are so many files in x/tools I am breaking up the
gofmt'ing into multiple CLs.)
For golang/go#51082.
Change-Id: Ife11502fe1e59a04d53dba9edccd3043e57f9ae8
Reviewed-on: https://go-review.googlesource.com/c/tools/+/399358
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Running go mod vendor can result in vendor/modules.txt being transiently
deleted while it is being updated. On Windows this introduces potential
problems with file locking, if modules.txt is being read by another go
process, such as an ongoing package load.
Change the command to use RunGoCommandPiped, which executes serially
within the gopls process.
For golang/go#49646
Change-Id: If2d1fe5431122ba05014051a0e9c303cf7ee9cb2
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Upgrade staticcheck to v0.3.0 to pick up support for generics. Since
this version only supports Go 1.17+, increase the version at which we
install staticcheck to 1.17 (from 1.15). This change is likely to cause
confusion for users on Go 1.16, so show a warning when setting
the "staticcheck" option to an unsupported value. Slightly refactor our
setting of options along the way.
Fixesgolang/go#52159
Change-Id: Id9b4cee340e31988c64ca712d98573343aaf5848
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Change-Id: I13cf73d7e043dda1a06c28bb09e413a76a68df1f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/391934
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We do a lot of gymnastics to format var types, working around the lack
of alias tracking in go/types. As part of this, we clone and qualify
expressions. In this case, we were not qualifying identifiers that were
contained within fields or field lists.
Fix this by updating our expression traversal to include *ast.Field and
*ast.FieldList.
Fixesgolang/go#50539
Change-Id: I6531c6a51aa402bd784778b8bedaa3dccee75af0
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Different naming style for Vuln type is unnecessary.
And, we can safely assume that ID is not empty.
Change-Id: Ifd43b671c814796af0110bad05642187bb1ea655
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Change-Id: Iaad847631b9d5ee40558fcf9d51f4dfa99600e6b
GitHub-Last-Rev: 6fcb64f8d9a093e7bd949e5d28bd1176c27005c0
GitHub-Pull-Request: golang/tools#372
Reviewed-on: https://go-review.googlesource.com/c/tools/+/389595
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Avoid a panic when a directoryFilters entry is empty.
Fixesgolang/go#51843
Change-Id: I50948894ce60d83441c3fc698c2e7d80d1d2b50e
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Make builtin hover consistent with signatureHelp by reusing the
BuiltinSignature function. To simplify this, just precompute the builtin
signature. In later CLs we can pre-compute all signatures and eliminate
the signatureSource indirection.
Fixesgolang/go#51811
Change-Id: I1babe64ba41f636bf455074a23ad6dac5539fb89
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This is a command that runs govulncheck-like analysis.
This is highly experimental and can change any time,
so we mark it with the "Exp" suffix. Once the interface
becomes stable, we will rename this command.
It returns VulncheckResult that can be encoded as
a JSON message. The result includes all potentially
affecting vulnerabilities, and sample traces.
This feature is currently available only when gopls
is compiled with go1.18. Otherwise, the command will
return an error.
Updates golang/go#50577
Updates golang/vscode-go#2096
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Make the change from CL 334209 in the source.
Change-Id: I923d857b77552d6c8d100ce97b6b86f29fbc4934
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For example:
func foo[A int | float64](a A) A { return a }
var _ int = fo<>
Previously at <> we would complete to "int(foo[A int|float64](a A))".
We added the int() type conversion because the returned type param A
was convertible to the expected "int" (i.e. both "int" and "float64"
can be converted). This is a premature suggestion, though, so fix by
suppressing such type conversions for type parameters.
Fixesgolang/go#51780.
Change-Id: I63e3bd401a4d9927b9261659812c521c02e33d94
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In this example:
func foo[A []int | []float64]() {}
foo[<>]
When completing at <> you were getting the creative candidate
"[]int | []float64". This came from some code that makes the expected
type available as a candidate if it wouldn't otherwise be found by a
lexical search. I tweaked the code in this case to instead look at
each structural type in the type constraint rather than the constraint
as a whole. In the above example you now get the candidates "[]int"
and "[]float64".
Change-Id: Ib8e422df3009cb4253ec66005b4a53851564c4e1
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Now when instantiating a generic function, we prefer type names that
are assignable to the corresponding constraint. For example:
func foo[A int|string]() {}
foo[<>]()
At <> we prefer the type names "int" and "string". Previously we had
no preference at all.
Updates golang/go#51782.
Change-Id: I7ed39ffa2bc4c63e9d320f47a58e139251712bb3
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Change-Id: Id2a88b9826598de539aeea5c3983df279aa0c6c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392657
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With generics, instantiated object may have differing pointer
identities. Fix references/rename requests for instantiated
methods/fields by using a canonical object identity of (pos, pkg, name).
Fixesgolang/go#51672
Change-Id: I0021ca562b8a74dadb616cf6864cb0bdd0165cc3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392480
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The argument to f.Fuzz is determined, up to the names of arguments,
by the types of the arguments to f.Add. Inside the function argument
of f.Fuzz, only f.Name and f.Failed are allowed.
(The fset passed to fuzz was for debugging. When the change seems solid
it can be removed.)
Fixesgolang/go#51089
Change-Id: Icf8b8cdfd29e499bcc605a358ca9edaef5baa835
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Show the module path of the module being used.
For golang/go#50930
Change-Id: I90a67e12182ffb457876b1fbc95aeb56ff632878
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Report diagnostics on use lines where the directory doesn't have a
go.mod file, and on syntax errors in go.work.
For golang/go#50930
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This CL adds support for generating method stubs for named types
that have type parameters and want to implement an interface.
See internal/lsp/testdata/stub/stub_generic_receiver.go for an example.
Note, this CL does not yet support type params on interface declarations.
Updates golang/go#37537
Change-Id: I2a2a18d364b2b489e2fbd8a74dfed88ae32d83b5
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Adds a command to run go mod edit -go to allow
users to easily upgrade their go directive.
Doing this change also revealed that changing
the go directive does not invalidate the type check
data and there may be stale diagnostics for a package.
Updates golang/go#51086
Change-Id: I659a216059c489a88e29cd51b944c3a0274f3700
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In test files, function definitions starting with
Test, Bench, or Fuzz can be completed almost automatically.
For the snippets the user hits tab, completes the name, hits
tab again, and the function is defined, except (of course) for its
body.
Otherwise a completion that fills in the signature is proposed.
Where appropriate, 'TestMain(m *testing.M)' is also offered as
a completion.
Fixesgolang/go#46896 and golang/go#51089
Change-Id: I46c05af0ead79c1d82ca40b2c605045e06e1a35d
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Alan Donovan
Robert Findley
Hana
Nooras Saba
Muir Manders
Dylan Le
Russ Cox
Dan Kortschak
cuishuang
Peter Weinbergr
Michael Matloob
Marwan Sulaiman
Suzy Mueller