NewRestorer returns a non-nil restorer which is used to clean the workspace of the specified path.

NewRewriter returns a non-nil rewriter which is used to rewrite the specified path.

Restorer represents a manager to restore currentFile tree which has been modified by `failpoint-ctl enable`, e.g: // ├── foo // │ ├── foo.go // │   └── foo.go__failpoint_stash__ // ├── bar // │ ├── bar.go // │   └── bar.go__failpoint_stash__ // └── foobar // ├── foobar.go //    └── foobar.go__failpoint_stash__ // Which will be restored as below: // ├── foo // │   └── foo.go <- foo.go__failpoint_stash__ // ├── bar // │   └── bar.go <- bar.go__failpoint_stash__ // └── foobar //    └── foobar.go <- foobar.go__failpoint_stash__ */.

Rewriter represents a rewriting tool for converting the failpoint marker functions to corresponding statements in Golang.