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 Lazy.t;;
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_and_univlist:
81 ((CicUniv.universe_graph * CicUniv.universe list) option) ->
82 UriManager.uri -> unit
84 (* this function is called by CicTypeChecker.typecheck_obj to add to the *)
85 (* environment a new well typed object that is not yet in the library *)
86 (* WARNING: THIS FUNCTION MUST BE CALLED ONLY BY CicTypeChecker *)
87 val add_type_checked_obj :
89 (Cic.obj * CicUniv.universe_graph * CicUniv.universe list) -> unit
91 (** remove a type checked object
92 * @raise Object_not_found when given term is not in the environment
93 * @raise Failure when remove_term is invoked while type checking *)
94 val remove_obj: UriManager.uri -> unit
96 (* get_cooked_obj ~trust uri *)
97 (* returns the object if it is already type-checked or if it can be *)
98 (* trusted (if [trust] = true and the trusting function accepts it) *)
99 (* Otherwise it raises Not_found *)
101 ?trust:bool -> CicUniv.universe_graph -> UriManager.uri ->
102 Cic.obj * CicUniv.universe_graph
104 (* get_cooked_obj_with_univlist ~trust uri *)
105 (* returns the object if it is already type-checked or if it can be *)
106 (* trusted (if [trust] = true and the trusting function accepts it) *)
107 (* Otherwise it raises Not_found *)
108 val get_cooked_obj_with_univlist :
109 ?trust:bool -> CicUniv.universe_graph -> UriManager.uri ->
110 Cic.obj * CicUniv.universe_graph * CicUniv.universe list
112 (* FUNCTIONS USED ONLY IN THE TOPLEVEL/PROOF-ENGINE *)
114 (* (de)serialization *)
115 val dump_to_channel : ?callback:(string -> unit) -> out_channel -> unit
116 val restore_from_channel : ?callback:(string -> unit) -> in_channel -> unit
117 val empty : unit -> unit
119 (** Set trust function. Per default this function is set to (fun _ -> true) *)
120 val set_trust: (UriManager.uri -> bool) -> unit
122 (** @return true for objects currently cooked/frozend/unchecked, false
123 * otherwise (i.e. objects already parsed from XML) *)
124 val in_cache : UriManager.uri -> bool
126 (* to debug the matitac batch compiler *)
127 val list_obj: unit -> (UriManager.uri * Cic.obj * CicUniv.universe_graph) list
128 val list_uri: unit -> UriManager.uri list
130 (** @return true for objects available in the library *)
131 val in_library: UriManager.uri -> bool
133 (** total parsing time, only to benchmark the parser *)
134 val total_parsing_time: float ref
136 val invalidate: unit -> unit