mirror of
https://github.com/golang/go
synced 2024-10-01 07:28:35 -06:00
4403f79810
This change is the next step in unification of text synchronization methods. The logic really belongs in the internal/lsp/cache package rather than the internal/lsp package. Pulled out a function to run diagnostics on a file (diagnostics are still run async). Change-Id: I5e237411a02af210ad386b37a6c2aa62ef723567 Reviewed-on: https://go-review.googlesource.com/c/tools/+/210784 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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f, err := view.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(view.Snapshot(), f)
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}
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case source.Delete:
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f := view.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 f == nil {
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continue
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}
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snapshot := view.Snapshot()
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fh := snapshot.Handle(ctx, f)
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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.File
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for _, pgh := range ph.CompiledGoFiles() {
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if pgh.File().Identity().URI == f.URI() {
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continue
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}
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if f := view.FindFile(ctx, pgh.File().Identity().URI); f != nil && s.session.IsOpen(f.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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