val sexp_of_pos : pos -> Sexplib0.Sexp.tval pos_of_sexp : Sexplib0.Sexp.t -> postype t = Yaml.Stream.Event.t = | Stream_start of {encoding : encoding;
}| Document_start of {version : version option;implicit : bool;
}| Document_end of {implicit : bool;
}| Mapping_start of {anchor : string option;tag : string option;implicit : bool;style : layout_style;
}| Mapping_end| Stream_end| Scalar of scalar| Sequence_start of {anchor : string option;tag : string option;implicit : bool;style : layout_style;
}| Sequence_end| Alias of {anchor : string;
}| Nothing
include Sexplib0.Sexpable.S with type t := t
val t_of_sexp : Sexplib0__.Sexp.t -> tval sexp_of_t : t -> Sexplib0__.Sexp.t