1package lsp
2
3import (
4	"context"
5
6	"golang.org/x/tools/internal/lsp/protocol"
7	"golang.org/x/tools/internal/lsp/source"
8	"golang.org/x/tools/internal/span"
9	errors "golang.org/x/xerrors"
10)
11
12func (s *Server) executeCommand(ctx context.Context, params *protocol.ExecuteCommandParams) (interface{}, error) {
13	switch params.Command {
14	case "tidy":
15		if len(params.Arguments) == 0 || len(params.Arguments) > 1 {
16			return nil, errors.Errorf("expected one file URI for call to `go mod tidy`, got %v", params.Arguments)
17		}
18		// Confirm that this action is being taken on a go.mod file.
19		uri := span.NewURI(params.Arguments[0].(string))
20		view, err := s.session.ViewOf(uri)
21		if err != nil {
22			return nil, err
23		}
24		snapshot := view.Snapshot()
25		fh, err := snapshot.GetFile(uri)
26		if err != nil {
27			return nil, err
28		}
29		if fh.Identity().Kind != source.Mod {
30			return nil, errors.Errorf("%s is not a mod file", uri)
31		}
32		// Run go.mod tidy on the view.
33		// TODO: This should go through the ModTidyHandle on the view.
34		// That will also allow us to move source.InvokeGo into internal/lsp/cache.
35		if _, err := source.InvokeGo(ctx, view.Folder().Filename(), snapshot.Config(ctx).Env, "mod", "tidy"); err != nil {
36			return nil, err
37		}
38	}
39	return nil, nil
40}
41