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https://github.com/golang/go
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412b8bda49
To manually collect cache entries, we need to know when a snapshot is idle. Add a reference count in the form of a WaitGroup and keep track of its uses. The pattern is that any time a snapshot is returned, it comes with a release function that decrements the ref count. Almost all uses of a snapshot originate in a user-facing request, handled in beginFileRequest. There it's mostly an exercise in passing Snapshots around instead of Views. In the other places I took the path of least resistance. For file modifications I tried to minimize the amount of code that needed to deal with snapshots. For diagnostics I just acquired the snapshot at the diagnostics call. Change-Id: Id48a2df3acdd97f27d905e2c2be23072f28f196b Reviewed-on: https://go-review.googlesource.com/c/tools/+/241837 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package lsp
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import (
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"context"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/span"
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errors "golang.org/x/xerrors"
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)
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func (s *Server) didChangeWorkspaceFolders(ctx context.Context, params *protocol.DidChangeWorkspaceFoldersParams) error {
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event := params.Event
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for _, folder := range event.Removed {
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view := s.session.View(folder.Name)
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if view != nil {
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view.Shutdown(ctx)
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} else {
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return errors.Errorf("view %s for %v not found", folder.Name, folder.URI)
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}
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}
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return s.addFolders(ctx, event.Added)
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}
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func (s *Server) addView(ctx context.Context, name string, uri span.URI) (source.View, source.Snapshot, func(), error) {
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s.stateMu.Lock()
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state := s.state
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s.stateMu.Unlock()
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if state < serverInitialized {
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return nil, nil, func() {}, errors.Errorf("addView called before server initialized")
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}
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options := s.session.Options()
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if err := s.fetchConfig(ctx, name, uri, &options); err != nil {
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return nil, nil, func() {}, err
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}
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return s.session.NewView(ctx, name, uri, options)
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}
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func (s *Server) didChangeConfiguration(ctx context.Context, changed interface{}) error {
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// go through all the views getting the config
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for _, view := range s.session.Views() {
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options := view.Options()
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if err := s.fetchConfig(ctx, view.Name(), view.Folder(), &options); err != nil {
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return err
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}
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view, err := view.SetOptions(ctx, options)
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if err != nil {
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return err
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}
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go func() {
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snapshot, release := view.Snapshot()
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defer release()
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s.diagnoseDetached(snapshot)
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}()
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}
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return nil
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}
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