+++ /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 *)
-(* *)
-(* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
-(* 24/01/2000 *)
-(* *)
-(* This module implements a trival cache system (an hash-table) for cic *)
-(* objects. Uses the getter (getter.ml) and the parser (cicParser.ml) *)
-(* *)
-(******************************************************************************)
-
-let raise e = print_endline "***" ; flush stdout ; print_endline (Printexc.to_string e) ; flush stdout ; raise e;;
-
-(*CSC: forse i due seguenti tipi sono da unificare? *)
-type cooked_obj =
- Cooked of Cic.obj
- | Frozen of Cic.obj
- | Unchecked of Cic.obj
-type type_checked_obj =
- CheckedObj of Cic.obj (* cooked obj *)
- | UncheckedObj of Cic.obj (* uncooked obj *)
-;;
-
-exception NoFunctionProvided;;
-
-(* CSC: da sostituire con un (...) option ref *)
-let cook_obj = ref (fun obj uri -> raise NoFunctionProvided);;
-
-exception CircularDependency of string;;
-exception CouldNotUnfreeze of string;;
-exception Impossible;;
-exception UncookedObj;;
-
-module HashedType =
- struct
- type t = UriManager.uri * int (* uri, livello di cottura *)
- let equal (u1,n1) (u2,n2) = UriManager.eq u1 u2 && n1 = n2
- let hash = Hashtbl.hash
- end
-;;
-
-(* Hashtable that uses == instead of = for testing equality *)
-module HashTable = Hashtbl.Make(HashedType);;
-
-let hashtable = HashTable.create 271;;
-
-(* n is the number of time that the object must be cooked *)
-let get_obj_and_type_checking_info uri n =
- try
- HashTable.find hashtable (uri,n)
- with
- Not_found ->
- try
- match HashTable.find hashtable (uri,0) with
- Cooked _
- | Frozen _ -> raise Impossible
- | Unchecked _ as t -> t
- with
- Not_found ->
- let filename = Getter.get uri in
- let (annobj,_) = CicParser.term_of_xml filename uri false in
- let obj = Deannotate.deannotate_obj annobj in
- let output = Unchecked obj in
- HashTable.add hashtable (uri,0) output ;
- output
-;;
-
-(* DANGEROUS!!! *)
-(* USEFUL ONLY DURING THE FIXING OF THE FILES *)
-(* change_obj uri (Some newobj) *)
-(* maps uri to newobj in cache. *)
-(* change_obj uri None *)
-(* maps uri to a freeze dummy-object. *)
-let change_obj uri newobj =
- let newobj =
- match newobj with
- Some newobj' -> Unchecked newobj'
- | None -> Frozen (Cic.Variable ("frozen-dummy", None, Cic.Implicit))
- in
- HashTable.remove hashtable (uri,0) ;
- HashTable.add hashtable (uri,0) newobj
-;;
-
-let is_annotation_uri uri =
- Str.string_match (Str.regexp ".*\.ann$") (UriManager.string_of_uri uri) 0
-;;
-
-(* returns both the annotated and deannotated uncooked forms (plus the *)
-(* map from ids to annotation targets) *)
-let get_annobj_and_type_checking_info uri =
- let filename = Getter.get uri in
- match CicParser.term_of_xml filename uri true with
- (_, None) -> raise Impossible
- | (annobj, Some ids_to_targets) ->
- (* If uri is the uri of an annotation, let's use the annotation file *)
- if is_annotation_uri uri then
- AnnotationParser.annotate (Getter.get_ann uri) ids_to_targets ;
- try
- (annobj, ids_to_targets, HashTable.find hashtable (uri,0))
- with
- Not_found ->
- let obj = Deannotate.deannotate_obj annobj in
- let output = Unchecked obj in
- HashTable.add hashtable (uri,0) output ;
- (annobj, ids_to_targets, output)
-;;
-
-
-(* get_obj uri *)
-(* returns the cic object whose uri is uri. If the term is not just in cache, *)
-(* then it is parsed via CicParser.term_of_xml from the file whose name is *)
-(* the result of Getter.get uri *)
-let get_obj uri =
- match get_obj_and_type_checking_info uri 0 with
- Unchecked obj -> obj
- | Frozen obj -> obj
- | Cooked obj -> obj
-;;
-
-(* get_annobj uri *)
-(* returns the cic object whose uri is uri either in annotated and *)
-(* deannotated form. The term is put into the cache if it's not there yet. *)
-let get_annobj uri =
- let (ann, ids_to_targets, deann) = get_annobj_and_type_checking_info uri in
- let deannobj =
- match deann with
- Unchecked obj -> obj
- | Frozen _ -> raise (CircularDependency (UriManager.string_of_uri uri))
- | Cooked obj -> obj
- in
- (ann, ids_to_targets, deannobj)
-;;
-
-(*CSC Commento falso *)
-(* get_obj uri *)
-(* returns the cooked cic object whose uri is uri. The term must be present *)
-(* and cooked in cache *)
-let rec get_cooked_obj uri cookingsno =
- match get_obj_and_type_checking_info uri cookingsno with
- Unchecked _
- | Frozen _ -> raise UncookedObj
- | Cooked obj -> obj
-;;
-
-(* is_type_checked uri *)
-(* CSC: commento falso ed obsoleto *)
-(* returns true if the term has been type-checked *)
-(* otherwise it returns false and freeze the term for type-checking *)
-(* set_type_checking_info must be called to unfreeze the term *)
-let is_type_checked uri cookingsno =
- match get_obj_and_type_checking_info uri cookingsno with
- Cooked obj -> CheckedObj obj
- | Unchecked obj ->
- HashTable.remove hashtable (uri,0) ;
- HashTable.add hashtable (uri,0) (Frozen obj) ;
- UncheckedObj obj
- | Frozen _ -> raise (CircularDependency (UriManager.string_of_uri uri))
-;;
-
-(* set_type_checking_info uri *)
-(* must be called once the type-checking of uri is finished *)
-(* The object whose uri is uri is unfreezed *)
-let set_type_checking_info uri =
- match HashTable.find hashtable (uri,0) with
- Frozen obj ->
- (* let's cook the object at every level *)
- HashTable.remove hashtable (uri,0) ;
- let obj' = CicSubstitution.undebrujin_inductive_def uri obj in
- HashTable.add hashtable (uri,0) (Cooked obj') ;
- let cooked_objs = !cook_obj obj' uri in
- let last_cooked_level = ref 0 in
- let last_cooked_obj = ref obj' in
- List.iter
- (fun (n,cobj) ->
- for i = !last_cooked_level + 1 to n do
- HashTable.add hashtable (uri,i) (Cooked !last_cooked_obj)
- done ;
- HashTable.add hashtable (uri,n + 1) (Cooked cobj) ;
- last_cooked_level := n + 1 ;
- last_cooked_obj := cobj
- ) cooked_objs ;
- for i = !last_cooked_level + 1 to UriManager.depth_of_uri uri + 1 do
- HashTable.add hashtable (uri,i) (Cooked !last_cooked_obj)
- done
- | _ -> raise (CouldNotUnfreeze (UriManager.string_of_uri uri))
-;;
projects / helm.git / blobdiff