X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_disambiguation%2Fdisambiguate.ml;h=c8016c0bae5b15df6441de6a1358572caf1eb295;hb=2bb6c98121db82a1c67565bb528787f2def7192d;hp=4aae8515e643841f8ab236ad72d6f593f9fc1627;hpb=192884dae520029b152a3f69989e51cc8af158ce;p=helm.git diff --git a/helm/ocaml/cic_disambiguation/disambiguate.ml b/helm/ocaml/cic_disambiguation/disambiguate.ml index 4aae8515e..c8016c0ba 100644 --- a/helm/ocaml/cic_disambiguation/disambiguate.ml +++ b/helm/ocaml/cic_disambiguation/disambiguate.ml @@ -29,11 +29,11 @@ open DisambiguateTypes open UriManager exception No_choices of domain_item -exception NoWellTypedInterpretation +exception NoWellTypedInterpretation of string Lazy.t list exception PathNotWellFormed (** raised when an environment is not enough informative to decide *) -exception Try_again +exception Try_again of string Lazy.t type aliases = bool * DisambiguateTypes.environment @@ -56,8 +56,8 @@ let descr_of_domain_item = function type 'a test_result = | Ok of 'a * Cic.metasenv - | Ko - | Uncertain + | Ko of string Lazy.t + | Uncertain of string Lazy.t let refine_term metasenv context uri term ugraph = (* if benchmark then incr actual_refinements; *) @@ -70,11 +70,11 @@ let refine_term metasenv context uri term ugraph = with | CicRefine.Uncertain s -> debug_print (lazy ("UNCERTAIN!!! [" ^ (Lazy.force s) ^ "] " ^ CicPp.ppterm term)) ; - Uncertain,ugraph + Uncertain s,ugraph | CicRefine.RefineFailure msg -> debug_print (lazy (sprintf "PRUNED!!!\nterm%s\nmessage:%s" (CicPp.ppterm term) (Lazy.force msg))); - Ko,ugraph + Ko msg,ugraph let refine_obj metasenv context uri obj ugraph = assert (context = []); @@ -85,11 +85,11 @@ let refine_obj metasenv context uri obj ugraph = with | CicRefine.Uncertain s -> debug_print (lazy ("UNCERTAIN!!! [" ^ (Lazy.force s) ^ "] " ^ CicPp.ppobj obj)) ; - Uncertain,ugraph + Uncertain s,ugraph | CicRefine.RefineFailure msg -> debug_print (lazy (sprintf "PRUNED!!!\nterm%s\nmessage:%s" (CicPp.ppobj obj) (Lazy.force msg))) ; - Ko,ugraph + Ko msg,ugraph let resolve (env: codomain_item Environment.t) (item: domain_item) ?(num = "") ?(args = []) () = try @@ -149,21 +149,27 @@ let interpretate_term ~(context: Cic.name list) ~env ~uri ~is_path ast = let (indtype_uri, indtype_no) = match indty_ident with | Some (indty_ident, _) -> - (match resolve env (Id indty_ident) () with + (match resolve env (Id indty_ident) () with | Cic.MutInd (uri, tyno, _) -> (uri, tyno) - | Cic.Implicit _ -> raise Try_again - | _ -> raise Invalid_choice) + | Cic.Implicit _ -> + raise (Try_again (lazy "The type of the term to be matched + is still unknown")) + | _ -> + raise (Invalid_choice (lazy "The type of the term to be matched is not (co)inductive!"))) | None -> let fst_constructor = match branches with | ((head, _, _), _) :: _ -> head - | [] -> raise Invalid_choice + | [] -> raise (Invalid_choice (lazy "The type of the term to be matched is an inductive type without constructors that cannot be determined")) in (match resolve env (Id fst_constructor) () with | Cic.MutConstruct (indtype_uri, indtype_no, _, _) -> (indtype_uri, indtype_no) - | Cic.Implicit _ -> raise Try_again - | _ -> raise Invalid_choice) + | Cic.Implicit _ -> + raise (Try_again (lazy "The type of the term to be matched + is still unknown")) + | _ -> + raise (Invalid_choice (lazy "The type of the term to be matched is not (co)inductive!"))) in Cic.MutCase (indtype_uri, indtype_no, cic_outtype, cic_term, (List.map do_branch branches)) @@ -263,7 +269,7 @@ let interpretate_term ~(context: Cic.name list) ~env ~uri ~is_path ast = (try List.assoc s ids_to_uris, aux loc context term with Not_found -> - raise Invalid_choice)) + raise (Invalid_choice (lazy "The provided explicit named substitution is trying to instantiate a named variable the object is not abstracted on")))) subst | None -> List.map (fun uri -> uri, Cic.Implicit None) uris) in @@ -307,10 +313,10 @@ let interpretate_term ~(context: Cic.name list) ~env ~uri ~is_path ast = *) t | _ -> - raise Invalid_choice + raise (Invalid_choice (lazy "??? Can this happen?")) with CicEnvironment.CircularDependency _ -> - raise Invalid_choice)) + raise (Invalid_choice (lazy "Circular dependency in the environment")))) | CicNotationPt.Implicit -> Cic.Implicit None | CicNotationPt.UserInput -> Cic.Implicit (Some `Hole) | CicNotationPt.Num (num, i) -> resolve env (Num i) ~num () @@ -793,18 +799,19 @@ let foo () = (k , ugraph1 ) in refine_profiler.HExtlib.profile foo () with - | Try_again -> Uncertain, ugraph - | Invalid_choice -> Ko, ugraph + | Try_again msg -> Uncertain msg, ugraph + | Invalid_choice msg -> Ko msg, ugraph in (* (4) build all possible interpretations *) + let (@@) (l1,l2) (l1',l2') = l1@l1, l2@l2' in let rec aux aliases diff lookup_in_todo_dom todo_dom base_univ = match todo_dom with | [] -> assert (lookup_in_todo_dom = None); (match test_env aliases [] base_univ with | Ok (thing, metasenv),new_univ -> - [ aliases, diff, metasenv, thing, new_univ ] - | Ko,_ | Uncertain,_ -> []) + [ aliases, diff, metasenv, thing, new_univ ], [] + | Ko msg,_ | Uncertain msg,_ -> [],[msg]) | item :: remaining_dom -> debug_print (lazy (sprintf "CHOOSED ITEM: %s" (string_of_domain_item item))); @@ -813,7 +820,7 @@ in refine_profiler.HExtlib.profile foo () None -> lookup_choices item | Some choices -> choices in match choices with - [] -> [] + [] -> [], [lazy "No choices"] | [codomain_item] -> (* just one choice. We perform a one-step look-up and if the next set of choices is also a singleton we @@ -835,20 +842,21 @@ in refine_profiler.HExtlib.profile foo () (match test_env new_env remaining_dom base_univ with | Ok (thing, metasenv),new_univ -> (match remaining_dom with - | [] -> [ new_env, new_diff, metasenv, thing, new_univ ] + | [] -> + [ new_env, new_diff, metasenv, thing, new_univ ], [] | _ -> aux new_env new_diff lookup_in_todo_dom remaining_dom new_univ) - | Uncertain,new_univ -> + | Uncertain msg,new_univ -> (match remaining_dom with - | [] -> [] + | [] -> [], [msg] | _ -> aux new_env new_diff lookup_in_todo_dom remaining_dom new_univ) - | Ko,_ -> []) + | Ko msg,_ -> [], [msg]) | _::_ -> let rec filter univ = function - | [] -> [] + | [] -> [],[] | codomain_item :: tl -> debug_print(lazy (sprintf "%s CHOSEN" (fst codomain_item))); let new_env = Environment.add item codomain_item aliases in @@ -856,17 +864,17 @@ in refine_profiler.HExtlib.profile foo () (match test_env new_env remaining_dom univ with | Ok (thing, metasenv),new_univ -> (match remaining_dom with - | [] -> [ new_env, new_diff, metasenv, thing, new_univ ] + | [] -> [ new_env, new_diff, metasenv, thing, new_univ ], [] | _ -> aux new_env new_diff None remaining_dom new_univ - ) @ + ) @@ filter univ tl - | Uncertain,new_univ -> + | Uncertain msg,new_univ -> (match remaining_dom with - | [] -> [] + | [] -> [],[msg] | _ -> aux new_env new_diff None remaining_dom new_univ - ) @ + ) @@ filter univ tl - | Ko,_ -> filter univ tl) + | Ko msg,_ -> ([],[msg]) @@ filter univ tl) in filter base_univ choices in @@ -874,11 +882,11 @@ in refine_profiler.HExtlib.profile foo () try let res = match aux aliases [] None todo_dom base_univ with - | [] -> raise NoWellTypedInterpretation - | [_,diff,metasenv,t,ugraph] -> + | [],errors -> raise (NoWellTypedInterpretation errors) + | [_,diff,metasenv,t,ugraph],_ -> debug_print (lazy "SINGLE INTERPRETATION"); [diff,metasenv,t,ugraph], false - | l -> + | l,_ -> debug_print (lazy (sprintf "MANY INTERPRETATIONS (%d)" (List.length l))); let choices = List.map