package streamable

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Source file sexp_clause.ml

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open! Base
open! Import

let maybe_match type_ (_ : Ctx.t) =
  let%bind core_type = Type.match_core_type type_ in
  let%map module_ =
    match core_type.ptyp_desc with
    | Ptyp_constr (longident_loc, []) ->
      (match
         Helpers.longident_is_like_t
           longident_loc.txt
           ~primitive_name:None
           ~first_module_name:"Sexp"
       with
       | false -> None
       | true  -> Helpers.if_module_dot_t_then_module core_type)
    | _ -> None
  in
  ({ children      = []
   ; apply_functor =
       (fun ctx (_ : module_expr list) ->
          Helpers.apply_streamable_dot
            (* NOTE: There is no [Of_sexpable_rpc] since, by definition, there must be
               both [of_sexp] and [sexp_of]. As a result, explicitly ask for the functor
               without the "_rpc" suffix. *)
            { ctx with rpc = false }
            ~functor_name:[%string "Of_sexpable"]
            ~arguments:[ pmod_ident ~loc:ctx.loc module_ ])
   }
   : Clause.Match.t)
;;