internal/lsp/cache: remove unused code

Change-Id: I7bafb1555ab7d35b9c49138c915b6c6c781e92c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/392656
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>

internal/lsp/cache/mod_tidy.go

@@ -152,21 +152,6 @@ func (s *snapshot) ModTidy(ctx context.Context, pm *source.ParsedModule) (*sourc
 	return mth.tidy(ctx, s)
 }
 
-func (s *snapshot) uriToModDecl(ctx context.Context, uri span.URI) (protocol.Range, error) {
-	fh, err := s.GetFile(ctx, uri)
-	if err != nil {
-		return protocol.Range{}, nil
-	}
-	pmf, err := s.ParseMod(ctx, fh)
-	if err != nil {
-		return protocol.Range{}, nil
-	}
-	if pmf.File.Module == nil || pmf.File.Module.Syntax == nil {
-		return protocol.Range{}, nil
-	}
-	return rangeFromPositions(pmf.Mapper, pmf.File.Module.Syntax.Start, pmf.File.Module.Syntax.End)
-}
-
 func (s *snapshot) hashImports(ctx context.Context, wsPackages []*packageHandle) (string, error) {
 	seen := map[string]struct{}{}
 	var imports []string

internal/lsp/cache/snapshot.go

@@ -803,13 +803,6 @@ func (s *snapshot) isActiveLocked(id PackageID, seen map[PackageID]bool) (active
 	return false
 }
 
-func (s *snapshot) getWorkspacePkgPath(id PackageID) PackagePath {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	return s.workspacePackages[id]
-}
-
 const fileExtensions = "go,mod,sum,work"
 
 func (s *snapshot) fileWatchingGlobPatterns(ctx context.Context) map[string]struct{} {

internal/lsp/cache/symbols.go

@@ -69,7 +69,6 @@ func symbolize(ctx context.Context, snapshot *snapshot, fh source.FileHandle) ([
 
 type symbolWalker struct {
 	curFile    *source.ParsedGoFile
-	pkgName    string
 	curURI     protocol.DocumentURI
 	symbols    []source.Symbol
 	firstError error

internal/lsp/cache/view.go

@@ -29,7 +29,6 @@ import (
 	"golang.org/x/tools/internal/imports"
 	"golang.org/x/tools/internal/lsp/protocol"
 	"golang.org/x/tools/internal/lsp/source"
-	"golang.org/x/tools/internal/memoize"
 	"golang.org/x/tools/internal/span"
 	"golang.org/x/tools/internal/xcontext"
 	errors "golang.org/x/xerrors"
@@ -139,10 +138,6 @@ const (
 	tempModfile
 )
 
-type builtinPackageHandle struct {
-	handle *memoize.Handle
-}
-
 // fileBase holds the common functionality for all files.
 // It is intended to be embedded in the file implementations
 type fileBase struct {
@@ -167,33 +162,6 @@ func (f *fileBase) addURI(uri span.URI) int {
 
 func (v *View) ID() string { return v.id }
 
-// TODO(rfindley): factor this out to use server.tempDir, and consolidate logic with tempModFile.
-func tempWorkFile(workFH source.FileHandle) (tmpURI span.URI, cleanup func(), err error) {
-	filenameHash := hashContents([]byte(workFH.URI().Filename()))
-	tmpMod, err := ioutil.TempFile("", fmt.Sprintf("go.%s.*.work", filenameHash))
-	if err != nil {
-		return "", nil, err
-	}
-	defer tmpMod.Close()
-
-	tmpURI = span.URIFromPath(tmpMod.Name())
-
-	content, err := workFH.Read()
-	if err != nil {
-		return "", nil, err
-	}
-
-	if _, err := tmpMod.Write(content); err != nil {
-		return "", nil, err
-	}
-
-	cleanup = func() {
-		_ = os.Remove(tmpURI.Filename())
-	}
-
-	return tmpURI, cleanup, nil
-}
-
 // tempModFile creates a temporary go.mod file based on the contents of the
 // given go.mod file. It is the caller's responsibility to clean up the files
 // when they are done using them.