41 lines
835 B
Plaintext
41 lines
835 B
Plaintext
(* -*- tuareg -*- *)
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open Stdune;;
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open Sexp.Of_sexp;;
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let pp_sexp_ast ppf sexp =
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Sexp.pp ppf (Sexp.Ast.remove_locs sexp)
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;;
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#install_printer pp_sexp_ast;;
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[%%expect{|
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val pp_sexp_ast : Format.formatter -> Stdune.Sexp.Ast.t -> unit = <fun>
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|}]
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Printexc.record_backtrace false;;
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[%%expect{|
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- : unit = ()
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|}]
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let sexp = Sexp.parse_string ~fname:"" ~mode:Single {|
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((foo 1)
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(foo 2))
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|}
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[%%expect{|
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val sexp : Usexp.Ast.t = ((foo 1) (foo 2))
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|}]
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let of_sexp = record (field "foo" int)
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let x = of_sexp sexp
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[%%expect{|
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val of_sexp : int Stdune.Sexp.Of_sexp.t = <fun>
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Exception:
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Stdune__Sexp.Of_sexp.Of_sexp (<abstr>,
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"Field \"foo\" is present too many times", None).
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|}]
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let of_sexp = record (dup_field "foo" int)
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let x = of_sexp sexp
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[%%expect{|
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val of_sexp : int list Stdune.Sexp.Of_sexp.t = <fun>
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val x : int list = [1; 2]
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|}]
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