1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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15 * GNU General Public License for more details.
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19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (****************************************************************************)
30 (* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
33 (* This module implements a trival cache system (an hash-table) for cic *)
35 (* objects. Uses the getter (getter.ml) and the parser (cicParser.ml) *)
37 (****************************************************************************)
39 exception CircularDependency of string;;
40 exception Object_not_found of UriManager.uri;;
42 (* as the get cooked, but if not present the object is only fetched,
43 * not unfreezed and committed
46 CicUniv.universe_graph -> UriManager.uri ->
47 Cic.obj * CicUniv.universe_graph
49 type type_checked_obj =
50 CheckedObj of (Cic.obj * CicUniv.universe_graph) (* cooked obj *)
51 | UncheckedObj of Cic.obj (* uncooked obj *)
54 * I think this should be the real semantic:
56 * val is_type_checked:
57 * ?trust:bool -> UriManager.uri -> bool
59 * but the old semantic is similar to get_cooked_obj, but
60 * returns an unchecked object intead of a Not_found
63 ?trust:bool -> CicUniv.universe_graph -> UriManager.uri ->
66 (* set_type_checking_info uri *)
67 (* must be called once the type-checking of uri is finished *)
68 (* The object whose uri is uri is unfreezed and won't be type-checked *)
69 (* again in the future (is_type_checked will return true) *)
71 (* Since the universes are not exported directly, but generated *)
72 (* typecheking the library, we can't find them in the library as we *)
73 (* do for the types. This means that when we commit uris during *)
74 (* univ generation we can't associate the uri with the universe graph *)
75 (* we find in the library, we have to calculate it and then inject it *)
76 (* in the cacke. This is an orrible backdoor used by univ_maker. *)
77 (* see the .ml file for some reassuring invariants *)
78 (* WARNING: THIS FUNCTION MUST BE CALLED ONLY BY CicTypeChecker *)
79 val set_type_checking_info :
80 ?replace_ugraph:(CicUniv.universe_graph option) -> UriManager.uri -> unit
82 (* this function is called by CicTypeChecker.typecheck_obj to add to the *)
83 (* environment a new well typed object that is not yet in the library *)
84 (* WARNING: THIS FUNCTION MUST BE CALLED ONLY BY CicTypeChecker *)
85 val add_type_checked_obj :
86 UriManager.uri -> (Cic.obj * CicUniv.universe_graph) -> unit
88 (** remove a type checked object
89 * @raise Object_not_found when given term is not in the environment
90 * @raise Failure when remove_term is invoked while type checking *)
91 val remove_obj: UriManager.uri -> unit
93 (* get_cooked_obj ~trust uri *)
94 (* returns the object if it is already type-checked or if it can be *)
95 (* trusted (if [trust] = true and the trusting function accepts it) *)
96 (* Otherwise it raises Not_found *)
98 ?trust:bool -> CicUniv.universe_graph -> UriManager.uri ->
99 Cic.obj * CicUniv.universe_graph
101 (* FUNCTIONS USED ONLY IN THE TOPLEVEL/PROOF-ENGINE *)
103 (* (de)serialization *)
104 val dump_to_channel : ?callback:(string -> unit) -> out_channel -> unit
105 val restore_from_channel : ?callback:(string -> unit) -> in_channel -> unit
106 val empty : unit -> unit
108 (** Set trust function. Per default this function is set to (fun _ -> true) *)
109 val set_trust: (UriManager.uri -> bool) -> unit
111 (** @return true for objects currently cooked/frozend/unchecked, false
112 * otherwise (i.e. objects already parsed from XML) *)
113 val in_cache : UriManager.uri -> bool
115 (* to debug the matitac batch compiler *)
116 val list_obj: unit -> (UriManager.uri * Cic.obj * CicUniv.universe_graph) list
117 val list_uri: unit -> UriManager.uri list
119 (** @return true for objects available in the library *)
120 val in_library: UriManager.uri -> bool
122 (** total parsing time, only to benchmark the parser *)
123 val total_parsing_time: float ref