+++ /dev/null
-(* Copyright (C) 2000, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM 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 2
- * of the License, or (at your option) any later version.
- *
- * HELM 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 HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
- *)
-
-(******************************************************************************)
-(* *)
-(* PROJECT HELM *)
-(* *)
-(* Ferruccio Guidi <fguidi@cs.unibo.it> *)
-(* 30/04/2002 *)
-(* *)
-(* *)
-(******************************************************************************)
-
-(* level managing functions *************************************************)
-
-type levels_spec = (string * bool * int) list
-
-let levels_of_term metasenv context term =
- let module TC = CicTypeChecker in
- let module Red = CicReduction in
- let module Util = MQueryUtil in
- let degree t =
- let rec degree_aux = function
- | Cic.Sort _ -> 1
- | Cic.Cast (u, _) -> degree_aux u
- | Cic.Prod (_, _, t) -> degree_aux t
- | _ -> 2
- in
- let u = TC.type_of_aux' metasenv context t in
- degree_aux (Red.whd context u)
- in
- let entry_eq (s1, b1, v1) (s2, b2, v2) =
- s1 = s2 && b1 = b2
- in
- let rec entry_in e = function
- | [] -> [e]
- | head :: tail ->
- head :: if entry_eq head e then tail else entry_in e tail
- in
- let inspect_uri main l uri tc v term =
- let d = degree term in
- entry_in (Util.string_of_uriref (uri, tc), main, 2 * v + d - 1) l
- in
- let rec inspect_term main l v term = match term with
- | Cic.Rel _ -> l
- | Cic.Meta (_, _) -> l
- | Cic.Sort _ -> l
- | Cic.Implicit -> l
- | Cic.Var u -> inspect_uri main l u [] v term
- | Cic.Const (u, _) -> inspect_uri main l u [] v term
- | Cic.MutInd (u, _, t) -> inspect_uri main l u [t] v term
- | Cic.MutConstruct (u, _, t, c) -> inspect_uri main l u [t; c] v term
- | Cic.Cast (uu, _) ->
- inspect_term main l v uu
- | Cic.Prod (_, uu, tt) ->
- let luu = inspect_term false l (v + 1) uu in
- inspect_term main luu (v + 1) tt
- | Cic.Lambda (_, uu, tt) ->
- let luu = inspect_term false l (v + 1) uu in
- inspect_term false luu (v + 1) tt
- | Cic.LetIn (_, uu, tt) ->
- let luu = inspect_term false l (v + 1) uu in
- inspect_term false luu (v + 1) tt
- | Cic.Appl m -> inspect_list main l true v m
- | Cic.MutCase (u, _, t, tt, uu, m) ->
- let lu = inspect_uri main l u [t] (v + 1) term in
- let ltt = inspect_term false lu (v + 1) tt in
- let luu = inspect_term false ltt (v + 1) uu in
- inspect_list main luu false (v + 1) m
- | Cic.Fix (_, m) -> inspect_ind l (v + 1) m
- | Cic.CoFix (_, m) -> inspect_coind l (v + 1) m
- and inspect_list main l head v = function
- | [] -> l
- | tt :: m ->
- let ltt = inspect_term main l (if head then v else v + 1) tt in
- inspect_list false ltt false v m
- and inspect_ind l v = function
- | [] -> l
- | (_, _, tt, uu) :: m ->
- let ltt = inspect_term false l v tt in
- let luu = inspect_term false ltt v uu in
- inspect_ind luu v m
- and inspect_coind l v = function
- | [] -> l
- | (_, tt, uu) :: m ->
- let ltt = inspect_term false l v tt in
- let luu = inspect_term false ltt v uu in
- inspect_coind luu v m
- in
- let rec inspect_backbone = function
- | Cic.Cast (uu, _) -> inspect_backbone uu
- | Cic.Prod (_, _, tt) -> inspect_backbone tt
- | Cic.LetIn (_, uu, tt) -> inspect_backbone tt
- | t -> inspect_term true [] 0 t
- in
- inspect_backbone term
-
-let string_of_levels l sep =
- let entry_out (s, b, v) =
- let pos = if b then " HEAD: " else " TAIL: " in
- string_of_int v ^ pos ^ s ^ sep
- in
- let rec levels_out = function
- | [] -> ""
- | head :: tail -> entry_out head ^ levels_out tail
- in
- levels_out l
-
-(* Query issuing functions **************************************************)
-
-exception Discard
-
-let nl = " <p>\n"
-
-let query_num = ref 1
-
-let log_file = ref ""
-
-let confirm_query = ref (fun _ -> true)
-
-let info = ref []
-
-let set_log_file f =
- log_file := f
-
-let set_confirm_query f =
- confirm_query := f
-
-let get_query_info () = ! info
-
-let execute_query query =
- let module Util = MQueryUtil in
- let mode = [Open_wronly; Open_append; Open_creat; Open_text] in
- let perm = 64 * 6 + 8 * 6 + 4 in
- let time () =
- let lt = Unix.localtime (Unix.time ()) in
- "NEW LOG: " ^
- string_of_int (lt.Unix.tm_mon + 1) ^ "-" ^
- string_of_int (lt.Unix.tm_mday + 1) ^ "-" ^
- string_of_int (lt.Unix.tm_year + 1900) ^ " " ^
- string_of_int (lt.Unix.tm_hour) ^ ":" ^
- string_of_int (lt.Unix.tm_min) ^ ":" ^
- string_of_int (lt.Unix.tm_sec)
- in
- let log q r =
- let och = open_out_gen mode perm ! log_file in
- if ! query_num = 1 then output_string och (time () ^ nl);
- let str = "Query: " ^ string_of_int ! query_num ^ nl ^ Util.text_of_query q ^ nl ^
- "Result:" ^ nl ^ Util.text_of_result r nl in
- output_string och str;
- flush och
- in
- let execute q =
- let r = Mqint.execute q in
- if ! log_file <> "" then log q r;
- info := string_of_int ! query_num :: ! info;
- incr query_num;
- r
- in
- if ! confirm_query query then execute query else raise Discard
-
-(* Query building functions ************************************************)
-
-let locate s =
- let module M = MathQL in
- let q = M.Ref (M.Attribute true M.RefineExact ("objectName", []) (M.Const [s])) in
- execute_query q
-
-let backward e c t level =
- let module M = MathQL in
- let v_pos = M.Const ["MainConclusion"; "InConclusion"] in
- let q_where = M.Sub (M.RefOf (
- M.Select ("uri",
- M.Relation (false, M.RefineExact, ("refObj", []), M.RVar "uri0", ["pos"]),
- M.Ex ["uri"] (M.Meet (M.VVar "positions", M.Record ("uri", ("pos", []))))
- )), M.VVar "universe"
- )
- in
- let uri_of_entry (r, b, v) = r in
- let rec restrict level = function
- | [] -> []
- | (u, b, v) :: tail ->
- if v <= level then (u, b, v) :: restrict level tail
- else restrict level tail
- in
- let build_select (r, b, v) =
- let pos = if b then "MainConclusion" else "InConclusion" in
- M.Select ("uri",
- M.Relation (false, M.RefineExact, ("backPointer", []), M.Ref (M.Const [r]), ["pos"]),
- M.Ex ["uri"] (M.Sub (M.Const [pos], M.Record ("uri", ("pos", []))))
- )
- in
- let rec build_intersect = function
- | [] -> M.Pattern (M.Const [".*"])
- | [hd] -> build_select hd
- | hd :: tl -> M.Intersect (build_select hd, build_intersect tl)
- in
- let levels = levels_of_term e c t in
- let rest = restrict level levels in
- info := [string_of_int (List.length rest)];
- let q_in = build_intersect rest in
- let q_select = M.Select ("uri0", q_in, q_where) in
- let universe = M.Const (List.map uri_of_entry levels) in
- let q_let_u = M.LetVVar ("universe", universe, q_select) in
- let q_let_p = M.LetVVar ("positions", v_pos, q_let_u) in
- execute_query q_let_p
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