* http://helm.cs.unibo.it/
*)
-open Disambiguate_struct
open Disambiguate_types
-let debug = true
-let debug_print = if debug then prerr_endline else ignore
+exception Invalid_choice
+exception No_choices of domain_item
+exception NoWellTypedInterpretation
-type interpretation_domain = Domain.t
-type domain_and_interpretation = interpretation_domain * interpretation
+ (** raised when an environment is not enough informative to decide *)
+exception Try_again
-let string_of_interpretation_domain_item = function
- | Id s -> "ID " ^ s
- | Symbol (s, i) -> "SYMBOL " ^ s ^ " " ^ string_of_int i
- | Num (s, i) -> "NUM " ^ s ^ " " ^ string_of_int i
+let debug = true
+let debug_print = if debug then prerr_endline else ignore
let descr_of_domain_item = function
| Id s -> s
| Symbol (s, _) -> s
- | Num (s, _) -> s
-
-let rec build_natural =
- function
- | 0 -> HelmLibraryObjects.Datatypes.zero
- | n -> Cic.Appl [ HelmLibraryObjects.Datatypes.succ; (build_natural (n - 1)) ]
-
-exception Invalid_choice
+ | Num i -> string_of_int i
-let symbol_choices: (string, interpretation_codomain_item list) Hashtbl.t = Hashtbl.create 1023
-let _ =
- Hashtbl.add symbol_choices "eq"
- [ ("Leibnitz's equality",
- (fun interp args ->
- let t1, t2 =
- match args with
- | [t1; t2] -> t1, t2
- | _ -> raise Invalid_choice
- in
- Cic.Appl [
- Cic.MutInd (HelmLibraryObjects.Logic.eq_URI, 0, []);
- Cic.Implicit; t1; t2
- ])) ]
-(*
-let add_symbol_choice = Hashtbl.add symbol_choices
-let add_symbol_choices symbol = List.iter (add_symbol_choice symbol)
-*)
-let num_choices =
- ref [
- "natural number",
- (fun num ->
- let num = int_of_string num in
- assert (num >= 0);
- build_natural num)
- ]
+let symbol_choices = Hashtbl.create 1023
+let num_choices = ref []
-let add_num_choice choice =
- num_choices := choice :: !num_choices
+let add_symbol_choice symbol codomain_item =
+ let current_choices =
+ try
+ Hashtbl.find symbol_choices symbol
+ with Not_found -> []
+ in
+ Hashtbl.replace symbol_choices symbol (codomain_item :: current_choices)
+let add_num_choice choice = num_choices := choice :: !num_choices
type test_result =
| Ok of Cic.term * Cic.metasenv
| CicRefine.MutCaseFixAndCofixRefineNotImplemented ->
(* TODO remove this case as soon as refine is fully implemented *)
(try
+ debug_print (Printf.sprintf "TYPE CHECKER %s" (CicPp.ppterm term));
let term' = CicTypeChecker.type_of_aux' metasenv context term in
Ok (term',metasenv)
- with _ -> Ko)
+(* with _ -> Ko) *)
+ with _ -> Uncertain)
| CicRefine.Uncertain _ ->
debug_print ("%%% UNCERTAIN!!! " ^ CicPp.ppterm term) ;
Uncertain
with
| Invalid_argument _ -> raise (UriManager.IllFormedUri uri)
-module Make (C: Callbacks) =
- struct
- exception NoWellTypedInterpretation
-
- let choices_of_id mqi_handle id =
- let query = MQueryGenerator.locate id in
- let result = MQueryInterpreter.execute mqi_handle query in
- let uris =
- List.map
- (function uri,_ ->
- MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format' uri
- ) result in
- C.output_html (`Msg (`T "Locate query:"));
- MQueryUtil.text_of_query
- (fun s -> C.output_html ~append_NL:false (`Msg (`T s)))
- "" query;
- C.output_html (`Msg (`T "Result:"));
- MQueryUtil.text_of_result
- (fun s -> C.output_html (`Msg (`T s))) "" result;
- let uris' =
- match uris with
- | [] ->
- [UriManager.string_of_uri (C.input_or_locate_uri
- ~title:("URI matching \"" ^ id ^ "\" unknown."))]
- | [uri] -> [uri]
- | _ ->
- C.interactive_user_uri_choice ~selection_mode:`MULTIPLE
- ~ok:"Try every selection." ~enable_button_for_non_vars:true
- ~title:"Ambiguous input." ~id
- ~msg: ("Ambiguous input \"" ^ id ^
- "\". Please, choose one or more interpretations:")
- uris
- in
- List.map (fun uri -> (uri, term_of_uri uri)) uris'
-
- let disambiguate_input
- mqi_handle context metasenv parser_dom parser_mk_term
- (current_dom, current_interpretation)
- =
- debug_print "NEW DISAMBIGUATE INPUT";
- let todo_dom = Domain.diff parser_dom current_dom in
- (* (1) for each item in todo_dom we get the associated list of choices *)
- let id_choices = Hashtbl.create 1023 in
- let _ =
- Domain.iter
- (function
- | Id id ->
- (* pairs <description, term> *)
- let choices = choices_of_id mqi_handle id in
- debug_print (sprintf
- "CHOICES_OF_ID di %s ha restituito %d scelte"
- id (List.length choices));
- Hashtbl.add id_choices id choices
- | _ -> assert false)
- (Domain.filter (function Id _ -> true | _ -> false) todo_dom)
- in
- (* (2) lookup function for any item (Id/Symbol/Num) *)
- let lookup_choices item =
- try
- (match item with
- | Id id ->
- let choices = Hashtbl.find id_choices id in
- List.map (fun (descr, term) -> (descr, fun _ _ -> term)) choices
- | Symbol (symb, _) -> Hashtbl.find symbol_choices symb
- | Num (num, _) ->
- List.map
- (fun (descr, f) -> (descr, let term = f num in fun _ _ -> term))
- !num_choices)
- with Not_found -> assert false
- in
- (* (3) test an interpretation filling with meta uninterpreted identifiers
- *)
- let test_interpretation current_interpretation todo_dom =
- let filled_interpretation =
- Domain.fold
- (fun item' interpretation ->
- fun item ->
- if item = item' then
- "Implicit", fun _ _ -> Cic.Implicit
- else
- interpretation item)
- todo_dom current_interpretation
- in
- let term' = parser_mk_term filled_interpretation in
- refine metasenv context term'
- in
- (* (4) build all possible interpretations *)
- let rec aux current_interpretation todo_dom =
- if Domain.is_empty todo_dom then
- match test_interpretation current_interpretation Domain.empty with
- | Ok (term, metasenv) -> [ current_interpretation, term, metasenv ]
- | Ko | Uncertain -> []
- else
- let item = Domain.choose todo_dom in
- debug_print (sprintf "CHOOSED ITEM: %s"
- (string_of_interpretation_domain_item item));
- let remaining_dom = Domain.remove item todo_dom in
- let choices = lookup_choices item in
- let rec filter = function
- | [] -> []
- | codomain_item :: tl ->
- let new_interpretation =
- fun item' ->
- if item' = item then
- codomain_item
- else
- current_interpretation item'
- in
- (match test_interpretation new_interpretation remaining_dom with
- | Ok (term, metasenv) ->
- (if Domain.is_empty remaining_dom then
- [ new_interpretation, term, metasenv ]
- else
- aux new_interpretation remaining_dom)
- @ filter tl
- | Uncertain ->
- (if Domain.is_empty remaining_dom then
- []
- else
- aux new_interpretation remaining_dom)
- @ filter tl
- | Ko -> filter tl)
- in
- filter choices
- in
- let (choosed_interpretation, choosed_term, choosed_metasenv) =
- match aux current_interpretation todo_dom with
- | [] -> raise NoWellTypedInterpretation
- | [ x ] ->
- debug_print "UNA SOLA SCELTA";
- x
- | l ->
- debug_print "PIU' SCELTE";
- let choices =
- List.map
- (fun (interpretation, _, _) ->
- List.map
- (fun domain_item ->
- let description = fst (interpretation domain_item) in
-(*
- match interpretation domain_item with
- | None -> assert false
- | Some (descr, _) -> descr
- in
-*)
- (descr_of_domain_item domain_item, description))
- (Domain.elements parser_dom))
- l
- in
- let choosed = C.interactive_interpretation_choice choices in
- List.nth l choosed
- in
- (Domain.union current_dom todo_dom, choosed_interpretation),
- choosed_metasenv, choosed_term
-
- end
+let resolve (env: environment) (item: domain_item) ?(num = "") ?(args = []) () =
+ snd (Environment.find item env) env num args
-let apply_interp (interp: interpretation) item = snd (interp item)
+let find_in_environment name context =
+ let rec aux acc = function
+ | [] -> raise Not_found
+ | Cic.Name hd :: tl when hd = name -> acc
+ | _ :: tl -> aux (acc + 1) tl
+ in
+ aux 1 context
-let interpretate ~context ~interp ast =
+let interpretate ~context ~env ast =
let rec aux loc context = function
| Ast.LocatedTerm (loc, term) -> aux loc context term
| Ast.Appl terms -> Cic.Appl (List.map (aux loc context) terms)
- | Ast.Appl_symbol (symb, args) ->
+ | Ast.Appl_symbol (symb, i, args) ->
let cic_args = List.map (aux loc context) args in
- apply_interp interp (Symbol (symb, 0)) interp cic_args
+ resolve env (Symbol (symb, i)) ~args:cic_args ()
| Ast.Binder (binder_kind, var, typ, body) ->
let cic_type = aux_option loc context typ in
- let cic_body = aux loc (Some var :: context) body in
+ let cic_body = aux loc (var :: context) body in
(match binder_kind with
| `Lambda -> Cic.Lambda (var, cic_type, cic_body)
| `Pi | `Forall -> Cic.Prod (var, cic_type, cic_body)
| `Exists ->
- apply_interp interp (Symbol ("exists", 0)) interp
- [ cic_type; Cic.Lambda (var, cic_type, cic_body) ])
+ resolve env (Symbol ("exists", 0))
+ ~args:[ cic_type; Cic.Lambda (var, cic_type, cic_body) ] ())
| Ast.Case (term, indty_ident, outtype, branches) ->
let cic_term = aux loc context term in
let cic_outtype = aux_option loc context outtype in
let rec do_branch' context = function
| [] -> aux loc context term
| hd :: tl ->
- let cic_body = do_branch' (Some (Cic.Name hd) :: context) tl in
+ let cic_body = do_branch' (Cic.Name hd :: context) tl in
Cic.Lambda (Cic.Name hd, Cic.Implicit, cic_body)
in
match pat with
| [] -> assert false
in
let (indtype_uri, indtype_no) =
- match apply_interp interp (Id indty_ident) interp [] with
+ match resolve env (Id indty_ident) () with
| Cic.MutInd (uri, tyno, _) -> uri, tyno
+ | Cic.Implicit -> raise Try_again
| _ -> Parser.fail loc ("Not an inductive type: " ^ indty_ident)
in
Cic.MutCase (indtype_uri, indtype_no, cic_outtype, cic_term,
| Ast.LetIn (var, def, body) ->
let cic_def = aux loc context def in
let name = Cic.Name var in
- let cic_body = aux loc (Some name :: context) body in
+ let cic_body = aux loc (name :: context) body in
Cic.LetIn (name, cic_def, cic_body)
| Ast.LetRec (kind, defs, body) ->
let context' =
- List.fold_left (fun acc (var, _, _, _) -> Some (Cic.Name var) :: acc)
+ List.fold_left (fun acc (var, _, _, _) -> Cic.Name var :: acc)
context defs
in
let cic_body = aux loc context' body in
in
List.fold_right (build_term inductiveFuns) inductiveFuns cic_body
| Ast.Ident (name, subst) ->
- let rec find acc e = function
- | [] -> raise Not_found
- | Some (Cic.Name hd) :: tl when e = hd -> acc
- | _ :: tl -> find (acc + 1) e tl
- in
+ (* TODO hanlde explicit substitutions *)
(try
- let index = find 1 name context in
+ let index = find_in_environment name context in
if subst <> [] then
Parser.fail loc "Explicit substitutions not allowed here";
Cic.Rel index
- with Not_found ->
- apply_interp interp (Id name) interp [])
- | Ast.Num num -> apply_interp interp (Num (num, 0)) interp []
+ with Not_found -> resolve env (Id name) ())
+ | Ast.Num (num, i) -> resolve env (Num i) ~num ()
| Ast.Meta (index, subst) ->
let cic_subst =
List.map
| Ast.LocatedTerm (loc, term) -> aux loc context term
| _ -> assert false
+let domain_of_term ~context ast =
+ let rec aux loc context = function
+ | Ast.LocatedTerm (_, term) -> aux loc context term
+ | Ast.Appl terms ->
+ List.fold_left (fun dom term -> Domain.union dom (aux loc context term))
+ Domain.empty terms
+ | Ast.Appl_symbol (symb, i, args) ->
+ List.fold_left (fun dom term -> Domain.union dom (aux loc context term))
+ (Domain.singleton (Symbol (symb, i))) args
+ | Ast.Binder (_, var, typ, body) ->
+ let type_dom = aux_option loc context typ in
+ let body_dom = aux loc (var :: context) body in
+ Domain.union type_dom body_dom
+ | Ast.Case (term, indty_ident, outtype, branches) ->
+ let term_dom = aux loc context term in
+ let outtype_dom = aux_option loc context outtype in
+ let do_branch (pat, term) =
+ match pat with
+ | _ :: tl ->
+ aux loc
+ (List.fold_left (fun acc var -> (Cic.Name var) :: acc)
+ context tl)
+ term
+ | [] -> assert false
+ in
+ let branches_dom =
+ List.fold_left (fun dom branch -> Domain.union dom (do_branch branch))
+ Domain.empty branches
+ in
+ Domain.add (Id indty_ident)
+ (Domain.union outtype_dom (Domain.union term_dom branches_dom))
+ | Ast.LetIn (var, body, where) ->
+ let body_dom = aux loc context body in
+ let where_dom = aux loc (Cic.Name var :: context) where in
+ Domain.union body_dom where_dom
+ | Ast.LetRec (kind, defs, where) ->
+ let context' =
+ List.fold_left (fun acc (var, _, _, _) -> Cic.Name var :: acc)
+ context defs
+ in
+ let where_dom = aux loc context' where in
+ let defs_dom =
+ List.fold_left
+ (fun dom (_, body, typ, _) ->
+ Domain.union (aux loc context' body) (aux_option loc context typ))
+ Domain.empty defs
+ in
+ Domain.union where_dom defs_dom
+ | Ast.Ident (name, subst) ->
+ (* TODO hanlde explicit substitutions *)
+ (try
+ let index = find_in_environment name context in
+ if subst <> [] then
+ Parser.fail loc "Explicit substitutions not allowed here";
+ Domain.empty
+ with Not_found -> Domain.singleton (Id name))
+ | Ast.Num (num, i) -> Domain.singleton (Num i)
+ | Ast.Meta (index, local_context) ->
+ List.fold_left
+ (fun dom term -> Domain.union dom (aux_option loc context term))
+ Domain.empty local_context
+ | Ast.Sort _ -> Domain.empty
+ and aux_option loc context = function
+ | None -> Domain.empty
+ | Some t -> aux loc context t
+ in
+ match ast with
+ | Ast.LocatedTerm (loc, term) -> aux loc context term
+ | _ -> assert false
+
+module Make (C: Callbacks) =
+ struct
+ let choices_of_id mqi_handle id =
+ let query = MQueryGenerator.locate id in
+ let result = MQueryInterpreter.execute mqi_handle query in
+ let uris =
+ List.map
+ (function uri,_ ->
+ MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format' uri
+ ) result in
+ C.output_html (`Msg (`T "Locate query:"));
+ MQueryUtil.text_of_query
+ (fun s -> C.output_html ~append_NL:false (`Msg (`T s)))
+ "" query;
+ C.output_html (`Msg (`T "Result:"));
+ MQueryUtil.text_of_result
+ (fun s -> C.output_html (`Msg (`T s))) "" result;
+ let uris' =
+ match uris with
+ | [] ->
+ [UriManager.string_of_uri (C.input_or_locate_uri
+ ~title:("URI matching \"" ^ id ^ "\" unknown."))]
+ | [uri] -> [uri]
+ | _ ->
+ C.interactive_user_uri_choice ~selection_mode:`MULTIPLE
+ ~ok:"Try every selection." ~enable_button_for_non_vars:true
+ ~title:"Ambiguous input." ~id
+ ~msg: ("Ambiguous input \"" ^ id ^
+ "\". Please, choose one or more interpretations:")
+ uris
+ in
+ List.map
+ (fun uri -> (uri, let term = term_of_uri uri in fun _ _ _ -> term))
+ uris'
+
+ let disambiguate_term mqi_handle context metasenv term ~aliases:current_env
+ =
+ let current_dom = (* TODO temporary, remove ASAP *)
+ Environment.fold (fun item _ dom -> Domain.add item dom)
+ current_env Domain.empty
+ in
+ debug_print "NEW DISAMBIGUATE INPUT";
+ let disambiguate_context = (* cic context -> disambiguate context *)
+ List.map
+ (function None -> Cic.Anonymous | Some (name, _) -> name)
+ context
+ in
+ let term_dom = domain_of_term ~context:disambiguate_context term in
+ debug_print (sprintf "DISAMBIGUATION DOMAIN: %s"
+ (string_of_domain term_dom));
+ let todo_dom = Domain.diff term_dom current_dom in
+ (* (2) lookup function for any item (Id/Symbol/Num) *)
+ let lookup_choices =
+ let id_choices = Hashtbl.create 1023 in
+ fun item ->
+ let choices =
+ match item with
+ | Id id ->
+ (try
+ Hashtbl.find id_choices id
+ with Not_found ->
+ let choices = choices_of_id mqi_handle id in
+ Hashtbl.add id_choices id choices;
+ choices)
+ | Symbol (symb, _) ->
+ (try Hashtbl.find symbol_choices symb with Not_found -> [])
+ | Num instance -> !num_choices
+ in
+ if choices = [] then raise (No_choices item);
+ choices
+ in
+ (* (3) test an interpretation filling with meta uninterpreted identifiers
+ *)
+ let test_env current_env todo_dom =
+ let filled_env =
+ Domain.fold
+ (fun item env ->
+ Environment.add item ("Implicit", fun _ _ _ -> Cic.Implicit) env)
+ todo_dom current_env
+ in
+ try
+ let cic_term =
+ interpretate ~context:disambiguate_context ~env:filled_env term
+ in
+ debug_print
+ (sprintf "TEST_INTERPRETATION: %s" (CicPp.ppterm cic_term));
+ refine metasenv context cic_term
+ with
+ | Try_again -> Uncertain
+ | Invalid_choice -> Ko
+ in
+ (* (4) build all possible interpretations *)
+ let rec aux current_env todo_dom =
+ if Domain.is_empty todo_dom then
+ match test_env current_env Domain.empty with
+ | Ok (term, metasenv) -> [ current_env, term, metasenv ]
+ | Ko | Uncertain -> []
+ else
+ let item = Domain.choose todo_dom in
+ let remaining_dom = Domain.remove item todo_dom in
+ debug_print (sprintf "CHOOSED ITEM: %s" (string_of_domain_item item));
+ let choices = lookup_choices item in
+ let rec filter = function
+ | [] -> []
+ | codomain_item :: tl ->
+ let new_env = Environment.add item codomain_item current_env in
+ (match test_env new_env remaining_dom with
+ | Ok (term, metasenv) ->
+ (if Domain.is_empty remaining_dom then
+ [ new_env, term, metasenv ]
+ else
+ aux new_env remaining_dom)
+ @ filter tl
+ | Uncertain ->
+ (if Domain.is_empty remaining_dom then
+ []
+ else
+ aux new_env remaining_dom)
+ @ filter tl
+ | Ko -> filter tl)
+ in
+ filter choices
+ in
+ let (choosed_env, choosed_term, choosed_metasenv) =
+ match aux current_env todo_dom with
+ | [] -> raise NoWellTypedInterpretation
+ | [ x ] ->
+ debug_print "UNA SOLA SCELTA";
+ x
+ | l ->
+ debug_print (sprintf "PIU' SCELTE (%d)" (List.length l));
+ let choices =
+ List.map
+ (fun (env, _, _) ->
+ List.map
+ (fun domain_item ->
+ let description =
+ fst (Environment.find domain_item env)
+ in
+ (descr_of_domain_item domain_item, description))
+ (Domain.elements term_dom))
+ l
+ in
+ let choosed = C.interactive_interpretation_choice choices in
+ List.nth l choosed
+ in
+ (choosed_env, choosed_metasenv, choosed_term)
+
+ end
+
projects / helm.git / blobdiff