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lustrec / src / env.ml @ 3b2bd83d

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(********************************************************************)
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(*                                                                  *)
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(*  The LustreC compiler toolset   /  The LustreC Development Team  *)
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(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)
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(*                                                                  *)
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(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)
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(*  under the terms of the GNU Lesser General Public License        *)
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(*  version 2.1.                                                    *)
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(*                                                                  *)
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(********************************************************************)
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(** Generic inference environments. Used both for typing and
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    clock-calculus. *)
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open Utils
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type 'a t  = 'a IMap.t
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(* Same namespace for nodes, variables and constants *)
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let initial = IMap.empty
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let add_value env ident ty =
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  IMap.add ident ty env
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let lookup_value env ident =
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  IMap.find ident env
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let exists_value env ident =
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  IMap.mem ident env
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let iter env f = IMap.iter f env
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(* Merges x and y. In case of conflicting definitions,
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   overwrites definitions in x by definitions in y *)
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let overwrite x y =
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  IMap.merge (
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    fun k _old _new -> match _new with
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      | Some _ -> _new
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      | _ -> _old
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  ) x y
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open Format
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let pp_env pp_fun fmt env =
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  let (lid,lty) = list_of_imap env in
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  let l' = List.combine lid lty in
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  let pp_fun fmt (id,value) =
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    Format.fprintf fmt "%s |-> %a" id pp_fun value
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  in
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  Format.fprintf fmt "{ @[<v 2>%a@] }" (fprintf_list ~sep:"@," pp_fun) l'
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(* Local Variables: *)
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(* compile-command:"make -C .." *)
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(* End: *)