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https://github.com/golang/go
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faa69481e7
This change is the first step in centralizing control of modifications to different files, either within the workspace or outside of it. We add a source.FileAction type to pass into the internal/lsp/cache package and handle the difference between opening and creating a file. Now that we load all packages in a workspace by default, we no longer need to re-load a file on open. This CL should enable CL 206883 to work correctly. Change-Id: I2ddb21ca2dd33720d668066e73283f5629d02867 Reviewed-on: https://go-review.googlesource.com/c/tools/+/206888 Run-TryBot: Rebecca Stambler <rstambler@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
98 lines
2.9 KiB
Go
98 lines
2.9 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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go s.diagnostics(view, uri)
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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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_, cphs, err := view.CheckPackageHandles(ctx, f)
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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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cph, err := source.WidestCheckPackageHandle(cphs)
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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 _, ph := range cph.Files() {
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if ph.File().Identity().URI == f.URI() {
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continue
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}
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if f := view.FindFile(ctx, ph.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.publishDiagnostics(ctx, uri, []source.Diagnostic{}); 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.diagnostics(view, otherFile.URI())
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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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