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Simon Cruanes 2023-04-01 20:24:53 -04:00
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src/pp/containers_pp.mli
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@ -118,6 +118,11 @@ module Ext : sig
pre: Out.t -> 'a -> unit; (** Printed before the wrapped value. *) pre: Out.t -> 'a -> unit; (** Printed before the wrapped value. *)
post: Out.t -> 'a -> unit; (** Printed after the wrapped value. *) post: Out.t -> 'a -> unit; (** Printed after the wrapped value. *)
} }
(** An extension is a custom document node. It takes a value of type ['a],
and a document [d], and can output what it wants based
on the custom value before and after [d] is printed.
The extension is considered to have width [0]. *)
end end
val ext : 'a Ext.t -> 'a -> t -> t val ext : 'a Ext.t -> 'a -> t -> t