+++ /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/.
- *)
-
-(*
- * implementazione del'interprete MathQL
- *)
-open MathQL;;
-open Eval;;
-(*open Utility;;*)
-open Union;;
-open Intersect;;
-open Diff;;
-open Sortedby;;
-open Select;;
-open Letin;;
-open Mathql_semantics;;
-open Pattern;;
-open Use;;
-
-
-
-let prop_pool = ref None;;
-
-let fi_to_string fi =
- match fi with
- (None, _) ->
- ""
- | (Some i, y) ->
- "#xpointer(1/" ^
- string_of_int i ^
- (
- match y with
- None ->
- ""
- | Some j ->
- "/" ^ (string_of_int j)
- ) ^
- ")"
-;;
-
-let see_prop_pool () =
- let _ = print_endline "eccomi" in
- List.iter
- (fun elem -> print_endline (fst elem ^ ": " ^ snd elem))
- (match !prop_pool with Some l -> l | _ -> print_endline "ciao"; assert false)
-;;
-
-
-let get_prop_id prop =
- if prop="refObj" then "F"
- else if prop="backPointer" then "B"
- else List.assoc prop (match !prop_pool with Some l -> l | _ -> assert false)
-;;
-
-(* execute_ex env q *)
-(* [env] is the attributed uri environment in which the query [q] *)
-(* must be evaluated *)
-(* [q] is the query to evaluate *)
-(* It returns a [Mathql_semantics.result] *)
-let rec execute_ex env =
- function
- MQSelect (apvar, alist, abool) -> select_ex env apvar (execute_ex env alist) abool
- | MQUsedBy (alist, asvar) -> use_ex (execute_ex env alist) asvar (get_prop_id "refObj") (* "F"
- (*"refObj"*) *)
- | MQUse (alist, asvar) -> use_ex (execute_ex env alist) asvar (get_prop_id "backPointer") (* "B"
- (*"backPointer"*) *)
- | MQPattern (apreamble, apattern, afragid) ->
- pattern_ex (apreamble, apattern, afragid)
- | MQUnion (l1, l2) -> union_ex (execute_ex env l1) (execute_ex env l2)
- | MQDiff (l1, l2) -> diff_ex (execute_ex env l1) (execute_ex env l2)
- | MQSortedBy (l, o, f) -> sortedby_ex (execute_ex env l) o f
- | MQIntersect (l1, l2) -> intersect_ex (execute_ex env l1) (execute_ex env l2)
- | MQListRVar rvar ->[List.assoc rvar env]
- | MQLetIn (lvar, l1, l2) ->
- let t = Unix.time () in
- let res =
- (*CSC: The interesting code *)
- let _ = letin_ex lvar (execute_ex env l1) in
- execute_ex env l2
- (*CSC: end of the interesting code *)
- in
- letdispose ();
- print_string ("LETIN = " ^ string_of_int (List.length res) ^ ": ") ;
- print_endline (string_of_float (Unix.time () -. t) ^ "s") ;
- flush stdout ;
- res
- | MQListLVar lvar -> letref_ex lvar
- | MQReference l ->
- let rec build_result = function
- | [] -> []
- | s :: tail ->
-
- let len = String.length s in
- let s = (String.sub s 4 (len-4))(*^".xml"*) in
- if String.contains s '#' then
- let pos = String.index s '#' in
- let s1 = Str.string_before s pos in
- let xp = Str.string_after s pos in
- let xp = Str.global_replace (Str.regexp "#xpointer(1") "" xp in
- let xp = Str.global_replace (Str.regexp "\/") "," xp in
- let xp = Str.global_replace (Str.regexp ")") "" xp in
- let s = (s1 ^ xp) in
- {uri = s ; attributes = [] ; extra = ""} :: build_result tail
- else
- {uri = s ; attributes = [] ; extra = ""} :: build_result tail
- in build_result (List.sort compare l)
-;;
-
-(* Let's initialize the execute in Select, creating a cyclical recursion *)
-Select.execute := execute_ex;;
-
-
-
-(*exception ExecuteFunctionNotInitialized;;
-let execute =
- ref
- (function _ -> raise ExecuteFunctionNotInitialized)
-;;
-
-
-
-execute := execute_ex;;*)
-
-
-
-(*
- * converte il risultato interno di una query (uri + contesto)
- * in un risultato di sole uri
- *
- * parametri:
- * l: string list list;
- *
- * output: mqresult;
- *
- * note:
- * il tipo del risultato mantenuto internamente e' diverso dal tipo di risultato
- * restituito in output poiche', mentre chi effettua le query vuole come risultato
- * solo le eventuali uri che soddisfano le query stesse, internamente ad una uri
- * sono associati anche i valori delle variabili che ancora non sono state valutate
- * perche', ad esempio, si trovano in altri rami dell'albero.
- *
- * Esempio:
- * SELECT x IN USE PATTERN "cic:/**.con" POSITION $a WHERE $a IS MainConclusion
- * L'albero corrispondente a questa query e':
- *
- * SELECT
- * / | \
- * x USE IS
- * / \ /\
- * PATTERN $a $a MainConclusion
- *
- * Nel momento in cui si esegue il ramo USE non sono noti i vincoli sullla variabile $a
- * percui e' necessario considerare, oltre alle uri, i valori della variabile per i quali
- * la uri puo' far parte del risultato.
- *)
-
- (* L.N.: prende una lista di attributed_uri e la trasforma in lista di
- uri(stringhe) costruendola con il costruttore MQRefs *)
-let xres_to_res l =
- MQRefs (List.map (function {Mathql_semantics.uri = uri} -> uri) l)
-
-
- (*
- let tmp = List.map (function {Mathql_semantics.uri = uri} -> uri) l in
- MQRefs
- (List.map
- (function l ->
- (*let _ = print_endline ("DEBUG: (mqint.ml: xres_to_res)" ^ l) in*)
- match Str.split (Str.regexp ":\|#\|/\|(\|)") l with
- hd::""::tl -> (
- match List.rev tl with
- n::"1"::"xpointer"::tail ->
- (
- Some hd,
- List.fold_left
- (fun par t ->
- match par with
- [] -> [MQBC t]
- | _ -> (MQBC t) :: MQBD :: par
- )
- []
- tail,
- [MQFC (int_of_string n)]
- )
- | n::m::"1"::"xpointer"::tail ->
- (
- Some hd,
- List.fold_left
- (fun par t ->
- match par with
- [] -> [MQBC t]
- | _ -> (MQBC t) :: MQBD :: par
- )
- []
- tail,
- [MQFC (int_of_string m); MQFC (int_of_string n)]
- )
- | tail ->
- (
- Some hd,
- List.fold_left
- (fun par t ->
- match par with
- [] -> [MQBC t]
- | _ -> (MQBC t) :: MQBD :: par
- )
- []
- tail,
- []
- )
- )
- | _ -> assert false
- )
- tmp
- )
-*)
-;;
-
-
-(*
- *
- *)
-let execute q =
-
- match q with
- MQList qq -> try xres_to_res (execute_ex [] qq) with e -> Error.print_exn e; raise e
-;;
-
-let init () = ();;
-let close () = ();;
projects / helm.git / blobdiff