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Robert Findley 88346e9948 internal/lsp: refactor workspace Symbol method
This is based on Paul Jolly's CL 228760, updated to use the new cache
API, support the symbolStyle configuration option, and lift up the
concept of symbol score for later improvement.

From that CL:

There are a number of issues with the current implementation:

* test variant packages are not handled correctly, meaning duplicate
  symbols are returned
* fuzzy results are not ordered by score

We refactor the implementation of workspace symbol to use a
symbolCollector that carries context during the walk for symbols. As
part of resolving the test variant issue, we first determine a list of
packages to walk.

(*symbolCollector).collectPackages gathers the packages we are going to
inspect for symbols. This pre-step is required in order to filter out
any "duplicate" *types.Package. The duplicates arise for packages that
have test variants.  For example, if package mod.com/p has test files,
then we will visit two packages that have the PkgPath() mod.com/p: the
first is the actual package mod.com/p, the second is a special version
that includes the non-XTest _test.go files. If we were to walk both of
of these packages, then we would get duplicate matching symbols and we
would waste effort. Therefore where test variants exist we walk those
(because they include any symbols defined in non-XTest _test.go files).

One further complication is that even after this filtering, packages
between views might not be "identical" because they can be built using
different build constraints (via the "env" config option). Therefore on
a per view basis we first build up a map of PkgPath() -> *types.Package
preferring the test variants if they exist. Then we merge the results
between views, de-duping by *types.Package.

Finally, when we come to walk these packages and start gathering
symbols, we ignore any files we have already seen (due to different
*types.Package for the same import path as a result of different build
constraints), keeping track of those symbols via symbolCollector.

Then we walk that list of packages in much the same way as before.

For golang/go#40548

Co-authored-by: Paul Jolly <paul@myitcv.io>
Change-Id: I8af5bdedbd4a6c3631a213d73a735aea556a13ae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247818
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2020-08-27 18:13:30 +00:00
benchmark/parse benchmark/parse: add unit test for String function 2019-12-16 21:43:19 +00:00
blog blog: use serial comma in long author lists 2020-03-25 19:41:47 +00:00
cmd internal/imports: require valid options, move LocalPrefix up 2020-07-07 20:02:13 +00:00
container/intsets all: fix some staticcheck errors 2020-01-29 04:53:41 +00:00
cover cover: error on negative numbers in profiles 2020-01-15 21:23:19 +00:00
go internal/lsp, go/packages: work-around invalid files in GOPATH mode 2020-08-27 16:29:21 +00:00
godoc godoc: fix panic in Presentation.ServeFile 2020-08-27 16:23:30 +00:00
gopls internal/lsp: add a configuration to limit workspace scope to root URI 2020-08-11 01:57:04 +00:00
imports internal/imports: require valid options, move LocalPrefix up 2020-07-07 20:02:13 +00:00
internal internal/lsp: refactor workspace Symbol method 2020-08-27 18:13:30 +00:00
playground playground/socket: handle multi-file present play snippets 2019-12-03 04:46:16 +00:00
present x/tools/present: point to instagram sted twitter for Renee French 2020-03-30 04:01:39 +00:00
refactor all: fix more typos 2019-09-11 15:13:14 +00:00
txtar txtar/archive: add unit test function for Format 2019-11-20 20:49:00 +00:00
.gitattributes
.gitignore .gitignore: roll back ".gitignore: ignore emacs backup files" 2018-02-13 00:43:28 +00:00
.prettierrc all: add a section on JS/CSS formatting to README 2020-05-28 15:31:34 +00:00
AUTHORS
codereview.cfg
CONTRIBUTING.md CONTRIBUTING.md: remove note about not accepting Pull Requests 2018-03-14 18:02:17 +00:00
CONTRIBUTORS
go.mod all: update dependencies in go.mod file 2020-07-06 23:19:48 +00:00
go.sum all: update dependencies in go.mod file 2020-07-06 23:19:48 +00:00
LICENSE
PATENTS
README.md all: add a section on JS/CSS formatting to README 2020-05-28 15:31:34 +00:00

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

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The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

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