mirror of
https://github.com/golang/go
synced 2024-10-01 10:18:32 -06:00
2208e1677e
This change eliminates the extra step of calling GetFile on the view and getting the FileHandle from the snapshot. It also eliminiates the redundant source.File type. Follow up changes will clean up the file kind handling, since it still exists on the fileBase type. Change-Id: I635ab8632821b36e062be5151eaab425a5698f60 Reviewed-on: https://go-review.googlesource.com/c/tools/+/211778 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com>
107 lines
3.2 KiB
Go
107 lines
3.2 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/lsp/telemetry"
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"golang.org/x/tools/internal/span"
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"golang.org/x/tools/internal/telemetry/log"
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)
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func (s *Server) didChangeWatchedFiles(ctx context.Context, params *protocol.DidChangeWatchedFilesParams) error {
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for _, change := range params.Changes {
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uri := span.NewURI(change.URI)
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ctx := telemetry.File.With(ctx, uri)
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for _, view := range s.session.Views() {
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if !view.Options().WatchFileChanges {
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continue
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}
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action := toFileAction(change.Type)
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switch action {
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case source.Change, source.Create:
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// If client has this file open, don't do anything.
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// The client's contents must remain the source of truth.
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if s.session.IsOpen(uri) {
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break
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}
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if s.session.DidChangeOutOfBand(ctx, uri, action) {
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// If we had been tracking the given file,
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// recompute diagnostics to reflect updated file contents.
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snapshot := view.Snapshot()
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fh, err := snapshot.GetFile(ctx, uri)
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if err != nil {
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return err
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}
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return s.diagnose(snapshot, fh)
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}
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case source.Delete:
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snapshot := view.Snapshot()
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fh := snapshot.FindFile(ctx, uri)
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// If we have never seen this file before, there is nothing to do.
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if fh == nil {
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continue
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}
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phs, err := snapshot.PackageHandles(ctx, fh)
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if err != nil {
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log.Error(ctx, "didChangeWatchedFiles: CheckPackageHandles", err, telemetry.File)
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continue
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}
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ph, err := source.WidestCheckPackageHandle(phs)
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if err != nil {
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log.Error(ctx, "didChangeWatchedFiles: WidestCheckPackageHandle", err, telemetry.File)
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continue
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}
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// Find a different file in the same package we can use to trigger diagnostics.
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// TODO(rstambler): Allow diagnostics to be called per-package to avoid this.
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var otherFile source.FileHandle
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for _, pgh := range ph.CompiledGoFiles() {
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if pgh.File().Identity().URI == fh.Identity().URI {
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continue
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}
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if f := snapshot.FindFile(ctx, pgh.File().Identity().URI); f != nil && s.session.IsOpen(fh.Identity().URI) {
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otherFile = f
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break
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}
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}
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// Notify the view of the deletion of the file.
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s.session.DidChangeOutOfBand(ctx, uri, action)
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// If this was the only file in the package, clear its diagnostics.
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if otherFile == nil {
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if err := s.client.PublishDiagnostics(ctx, &protocol.PublishDiagnosticsParams{
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URI: protocol.NewURI(uri),
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Version: fh.Identity().Version,
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}); err != nil {
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log.Error(ctx, "failed to clear diagnostics", err, telemetry.URI.Of(uri))
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}
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return nil
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}
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// Refresh diagnostics for the package the file belonged to.
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go s.diagnoseFile(view.Snapshot(), otherFile)
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}
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}
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}
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return nil
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}
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func toFileAction(ct protocol.FileChangeType) source.FileAction {
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switch ct {
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case protocol.Changed:
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return source.Change
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case protocol.Created:
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return source.Create
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case protocol.Deleted:
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return source.Delete
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}
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return source.UnknownFileAction
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}
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