350 lines
13 KiB
OCaml
350 lines
13 KiB
OCaml
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open Hashtbl
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open Type
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(* Définition du type des informations associées aux identifiants *)
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type info =
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| InfoConst of string * int
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| InfoVar of string * typ * int * string
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| InfoFun of string * typ * typ list
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(* Données stockées dans la tds et dans les AST : pointeur sur une information *)
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type info_ast = info ref
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(* Table des symboles hiérarchique *)
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(* Les tables locales sont codées à l'aide d'une hashtable *)
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type tds =
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| Nulle
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(* Table courante : la table mère - la table courante *)
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| Courante of tds * (string,info_ast) Hashtbl.t
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(* Créer une information à associer à l'AST à partir d'une info *)
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let info_to_info_ast i = ref i
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(* Récupère l'information associée à un noeud *)
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let info_ast_to_info i = !i
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(* Création d'une table des symboles à la racine *)
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let creerTDSMere () = Courante (Nulle, Hashtbl.create 100)
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(* Création d'une table des symboles fille *)
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(* Le paramètre est la table mère *)
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let creerTDSFille mere = Courante (mere, Hashtbl.create 100)
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(* Ajoute une information dans la table des symboles locale *)
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(* tds : la tds courante *)
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(* string : le nom de l'identificateur *)
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(* info : l'information à associer à l'identificateur *)
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(* Si l'identificateur est déjà présent dans TDS, l'information est écrasée *)
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(* retour : unit *)
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let ajouter tds nom info =
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match tds with
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| Nulle -> failwith "Ajout dans une table vide"
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| Courante (_,c) -> Hashtbl.add c nom info
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(* Recherche les informations d'un identificateur dans la tds locale *)
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(* Ne cherche que dans la tds de plus bas niveau *)
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let chercherLocalement tds nom =
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match tds with
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| Nulle -> None
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| Courante (_,c) -> find_opt c nom
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(* TESTS *)
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let%test _ = chercherLocalement (creerTDSMere()) "x" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherLocalement tds "x" = Some ix
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherLocalement tds "y" = Some iy
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherLocalement tds "z" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tds "x" = Some ix
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tds "y" = Some iy
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tds "z" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tdsf "y" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tdsf "x" = Some ix2
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tdsf "z" = Some iz
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherLocalement tdsf "a" = None
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(* Recherche les informations d'un identificateur dans la tds globale *)
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(* Si l'identificateur n'est pas présent dans la tds de plus bas niveau *)
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(* la recherche est effectuée dans sa table mère et ainsi de suite *)
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(* jusqu'à trouver (ou pas) l'identificateur *)
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let rec chercherGlobalement tds nom =
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match tds with
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| Nulle -> None
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| Courante (m,c) ->
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match find_opt c nom with
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| Some _ as i -> i
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| None -> chercherGlobalement m nom
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(* TESTS *)
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let%test _ = chercherGlobalement (creerTDSMere()) "x" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherGlobalement tds "x" = Some ix
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherGlobalement tds "y" = Some iy
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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chercherGlobalement tds "z" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tds "x" = Some ix
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tds "y" = Some iy
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tds "z" = None
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tdsf "y" = Some iy
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tdsf "x" = Some ix2
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tdsf "z" = Some iz
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let%test _ =
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let tds = creerTDSMere() in
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let ix = info_to_info_ast (InfoVar ("x", Rat, 0, "SB")) in
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let iy = info_to_info_ast (InfoVar ("y", Int, 2, "SB")) in
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ajouter tds "x" ix;
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ajouter tds "y" iy;
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let tdsf = creerTDSFille(tds) in
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let ix2 = info_to_info_ast (InfoVar ("x", Bool, 3, "LB")) in
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let iz = info_to_info_ast (InfoVar ("z", Rat, 4, "LB")) in
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ajouter tdsf "x" ix2;
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ajouter tdsf "z" iz;
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chercherGlobalement tdsf "a" = None
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(* Convertie une info en une chaine de caractère - pour affichage *)
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let string_of_info info =
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match info with
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| InfoConst (n,value) -> "Constante "^n^" : "^(string_of_int value)
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| InfoVar (n,t,dep,base) -> "Variable "^n^" : "^(string_of_type t)^" "^(string_of_int dep)^"["^base^"]"
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| InfoFun (n,t,tp) -> "Fonction "^n^" : "^(List.fold_right (fun elt tq -> if tq = "" then (string_of_type elt) else (string_of_type elt)^" * "^tq) tp "" )^
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" -> "^(string_of_type t)
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(* Affiche la tds locale *)
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let afficher_locale tds =
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match tds with
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| Nulle -> print_newline ()
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|Courante (_,c) -> Hashtbl.iter ( fun n info -> (print_string (n^" : "^(string_of_info (info_ast_to_info info))^"\n"))) c
|
||
|
|
|
||
|
|
(* Affiche la tds locale et récursivement *)
|
||
|
|
let afficher_globale tds =
|
||
|
|
let rec afficher tds indent =
|
||
|
|
match tds with
|
||
|
|
| Nulle -> print_newline ()
|
||
|
|
| Courante (m,c) -> if Hashtbl.length c = 0
|
||
|
|
then print_string (indent^"<empty>\n")
|
||
|
|
else Hashtbl.iter ( fun n info -> (print_string (indent^n^" : "^(string_of_info (info_ast_to_info info))^"\n"))) c ; afficher m (indent^" ")
|
||
|
|
in afficher tds ""
|
||
|
|
|
||
|
|
(* Modifie le type si c'est une InfoVar, ne fait rien sinon *)
|
||
|
|
let modifier_type_info t i =
|
||
|
|
match !i with
|
||
|
|
|InfoVar (n,_,dep,base) -> i:= InfoVar (n,t,dep,base)
|
||
|
|
| _ -> failwith "Appel modifier_type_info pas sur un InfoVar"
|
||
|
|
|
||
|
|
let%test _ =
|
||
|
|
let info = InfoVar ("x", Undefined, 4 , "SB") in
|
||
|
|
let ia = info_to_info_ast info in
|
||
|
|
modifier_type_info Rat ia;
|
||
|
|
match info_ast_to_info ia with
|
||
|
|
| InfoVar ("x", Rat, 4 , "SB") -> true
|
||
|
|
| _ -> false
|
||
|
|
|
||
|
|
(* Modifie les types de retour et des paramètres si c'est une InfoFun, ne fait rien sinon *)
|
||
|
|
let modifier_type_fonction_info t tp i =
|
||
|
|
match !i with
|
||
|
|
|InfoFun(n,_,_) -> i:= InfoFun(n,t,tp)
|
||
|
|
| _ -> failwith "Appel modifier_type_fonction_info pas sur un InfoFun"
|
||
|
|
|
||
|
|
let%test _ =
|
||
|
|
let info = InfoFun ("f", Undefined, []) in
|
||
|
|
let ia = info_to_info_ast info in
|
||
|
|
modifier_type_fonction_info Rat [Int ; Int] ia;
|
||
|
|
match info_ast_to_info ia with
|
||
|
|
| InfoFun ("f", Rat, [Int ; Int]) -> true
|
||
|
|
| _ -> false
|
||
|
|
|
||
|
|
(* Modifie l'emplacement (dépl, registre) si c'est une InfoVar, ne fait rien sinon *)
|
||
|
|
let modifier_adresse_info d b i =
|
||
|
|
match !i with
|
||
|
|
|InfoVar (n,t,_,_) -> i:= InfoVar (n,t,d,b)
|
||
|
|
| _ -> failwith "Appel modifier_adresse_info pas sur un InfoVar"
|
||
|
|
|
||
|
|
let%test _ =
|
||
|
|
let info = InfoVar ("x", Rat, 4 , "SB") in
|
||
|
|
let ia = info_to_info_ast info in
|
||
|
|
modifier_adresse_info 10 "LB" ia;
|
||
|
|
match info_ast_to_info ia with
|
||
|
|
| InfoVar ("x", Rat, 10 , "LB") -> true
|
||
|
|
| _ -> false
|
||
|
|
|
||
|
|
|