package lsp import ( "context" "golang.org/x/tools/internal/lsp/protocol" "golang.org/x/tools/internal/lsp/source" "golang.org/x/tools/internal/span" errors "golang.org/x/xerrors" ) func (s *Server) executeCommand(ctx context.Context, params *protocol.ExecuteCommandParams) (interface{}, error) { switch params.Command { case "tidy": if len(params.Arguments) == 0 || len(params.Arguments) > 1 { return nil, errors.Errorf("expected one file URI for call to `go mod tidy`, got %v", params.Arguments) } // Confirm that this action is being taken on a go.mod file. uri := span.NewURI(params.Arguments[0].(string)) view := s.session.ViewOf(uri) f, err := view.GetFile(ctx, uri) if err != nil { return nil, err } fh := view.Snapshot().Handle(ctx, f) if fh.Identity().Kind != source.Mod { return nil, errors.Errorf("%s is not a mod file", uri) } // Run go.mod tidy on the view. if err := source.ModTidy(ctx, view); err != nil { return nil, err } } return nil, nil }