Bump golang.org/x/tools from 0.1.5 to 0.4.0 in /internal/tools

[dependabot]

Bumps golang.org/x/tools from 0.1.5 to 0.4.0.

Release notes

Sourced from golang.org/x/tools's releases.

gopls/v0.4.0

• Improved support for working with modules (@​ridersofrohan). A detailed walk-through of the new features can be found here. A quick summary:
  • Use the -modfile flag to suggest which modules should be added/removed from the go.mod file, rather than editing it automatically.
  • Suggest dependency upgrades in-editor and provide additional language features, such as formatting, for the go.mod file.
• Inverse implementations (@​muirdm). "Go to implementations" on a concrete type will show the interfaces it implements.
• Completion improvements (@​muirdm). Specifically, improved completion for keywords. Also, offer if err != nil { return err } as a completion item.
• Jumping to definition on an import statement returns all files as definition locations (@​danishprakash).
• Support for running go generate through the editor, via a code lens (@​marwan-at-work).
• Command-line support for workspace symbols (@​daisuzu).

Opt-in:

• Code actions suggesting gofmt -s-style simplifications (@​ridersofrohan). To get these on-save, add the following setting:

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

• Code actions suggesting fixes for type errors, such as missing return values (goreturns-style), undeclared names, unused parameters, and assignment statements that should be converted from := to = (@​ridersofrohan). Add the following to your gopls settings to opt-in to these analyzers. In the future, they will be on by default and high-confidence suggested fixes may be applied on save. See additional documentation on analyzers here.

"gopls": {
	"analyses": {
		"fillreturns": true,
                "undeclaredname": true,
                "unusedparams": true,
                "nonewvars": true,
	}
}

• Further improvements in the support for multiple concurrent clients (@​findleyr). See #34111 for all details.

For a complete list of the issues resolved, see the gopls/v0.4.0 milestone.

gopls/v0.3.4

• golang.org/cl/222979: fix for a nil pointer exception in completion (@​muirdm).
• golang.org/cl/222980: fix a concurrent map write and iteration (@​ridersofrohan).

gopls/v0.3.3

• Support for workspace symbols. (@​daisuzu)
• Various completion improvements, including fixes for completion in code that doesn't parse. (@​muirdm)
• Limit diagnostic concurrency, preventing huge spikes in memory usage that some users encountered. (@​heschik)
• Improved handling for URIs containing escaped characters. (@​heschik)
• Module versions from "go list" in pkg.go.dev links. (@​ridersofrohan)

... (truncated)

Commits

• aee3994 gopls/internal/lsp/fake: in (*Workdir).RenameFile, fall back to read + write
• fe60148 go.mod: update golang.org/x dependencies
• c9ea9a7 gopls/internal/regtest: add a test for the case when the renaming package's p...
• bf5db81 gopls/internal/lsp/cache: improve ad-hoc warning for nested modules
• aa9f4b2 go/analysis: document that facts are gob encoded in one gulp
• bdcd082 internal/gcimporter: skip tests earlier when 'go build' is not available
• 2ad6325 gopls/internal/lsp/cache: expand ImportPath!=PackagePath comment
• 52c7b88 gopls/internal/robustio: only define ERROR_SHARING_VIOLATION on Windows
• 4f69bf3 gopls/internal/lsp/cache: narrow reloadOrphanedFiles to open files
• 6002d6e gopls/internal/regtest/misc: test Implementations + vendor
• Additional commits viewable in compare view

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[dependabot]

Superseded by #310.