Source file `reader.ml`

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(* YOCaml a static blog generator.
   Copyright (C) 2024 The Funkyworkers and The YOCaml's developers

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>. *)

module Over (T : sig
  type env
  type 'a monad

  val return : 'a -> 'a monad
  val bind : ('a -> 'b monad) -> 'a monad -> 'b monad
end) =
struct
  type env = T.env
  type 'a monad = 'a T.monad
  type 'a t = env -> 'a monad

  let return x _ = T.return x
  let bind f reader env = T.bind (fun x -> (f x) env) (reader env)
end