package core

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package core
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Module Sexp.Sexp_maybeSource

If sexp_of_t fails, it returns Error rather than raising. You can convert values of this type to and from sexp in processes that can or cannot parse the underlying sexp in any combination and still recover the original value. Also, the Error case contains a human-readable description of the error.

A common use case is to parse most of a sexp even when some small part fails to parse, e.g.:

  type query =
    | Start of Initial_config.t Sexp_maybe.t
    | Stop of  Reason_to_stop.t Sexp_maybe.t
  [@@deriving sexp]

If Reason_to_stop.t_of_sexp fails, you can still tell it was a Stop query.

Sourcetype 'a t = ('a, Base.Sexp.t * Error.t) Result.t
include Bin_prot.Binable.S1 with type 'a t := 'a t
Sourceval bin_size_t : ('a, 'a t) Bin_prot.Size.sizer1
Sourceval bin_write_t : ('a, 'a t) Bin_prot.Write.writer1
Sourceval bin_read_t : ('a, 'a t) Bin_prot.Read.reader1
Sourceval __bin_read_t__ : ('a, int -> 'a t) Bin_prot.Read.reader1
Sourceval bin_writer_t : ('a, 'a t) Bin_prot.Type_class.S1.writer
Sourceval bin_reader_t : ('a, 'a t) Bin_prot.Type_class.S1.reader
Sourceval bin_t : ('a, 'a t) Bin_prot.Type_class.S1.t
include Ppx_compare_lib.Comparable.S1 with type 'a t := 'a t
Sourceval compare : ('a -> 'a -> int) -> 'a t -> 'a t -> int
include Ppx_hash_lib.Hashable.S1 with type 'a t := 'a t
Sourceval hash_fold_t : (Base.Hash.state -> 'a -> Base.Hash.state) -> Base.Hash.state -> 'a t -> Base.Hash.state
include Sexplib0.Sexpable.S1 with type 'a t := 'a t
Sourceval t_of_sexp : (Sexplib0.Sexp.t -> 'a) -> Sexplib0.Sexp.t -> 'a t
Sourceval sexp_of_t : ('a -> Sexplib0.Sexp.t) -> 'a t -> Sexplib0.Sexp.t
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