(* TODO unify exceptions *)
-exception CicReductionInternalError;;
exception WrongUriToInductiveDefinition;;
exception Impossible of int;;
exception ReferenceToConstant;;
type stack_term
type env_term
type ens_term
- val to_stack : Cic.term -> stack_term
- val to_stack_list : Cic.term list -> stack_term list
- val to_env : Cic.term -> env_term
- val to_ens : Cic.term -> ens_term
- val from_stack :
- unwind:
- (int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> Cic.term) ->
- stack_term -> Cic.term
- val from_stack_list :
- unwind:
- (int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> Cic.term) ->
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
+ val to_env : config -> env_term
+ val to_ens : config -> ens_term
+ val from_stack : stack_term -> config
+ val from_stack_list_for_unwind :
+ unwind: (config -> Cic.term) ->
stack_term list -> Cic.term list
- val from_env : env_term -> Cic.term
- val from_ens : ens_term -> Cic.term
+ val from_env : env_term -> config
+ val from_env_for_unwind :
+ unwind: (config -> Cic.term) ->
+ env_term -> Cic.term
+ val from_ens : ens_term -> config
+ val from_ens_for_unwind :
+ unwind: (config -> Cic.term) ->
+ ens_term -> Cic.term
val stack_to_env :
- reduce:
- (int * env_term list * ens_term Cic.explicit_named_substitution *
- Cic.term * stack_term list -> Cic.term) ->
- unwind:
- (int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> Cic.term) ->
+ reduce: (config -> config) ->
+ unwind: (config -> Cic.term) ->
stack_term -> env_term
val compute_to_env :
- reduce:
- (int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term *
- stack_term list -> Cic.term) ->
- unwind:
- (int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> Cic.term) ->
+ reduce: (config -> config) ->
+ unwind: (config -> Cic.term) ->
int -> env_term list -> ens_term Cic.explicit_named_substitution ->
Cic.term -> env_term
val compute_to_stack :
- reduce:
- (int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term *
- stack_term list -> Cic.term) ->
- unwind:
- (int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> Cic.term) ->
- int -> env_term list -> ens_term Cic.explicit_named_substitution ->
- Cic.term -> stack_term
+ reduce: (config -> config) ->
+ unwind: (config -> Cic.term) ->
+ config -> stack_term
end
;;
+module CallByValueByNameForUnwind =
+ struct
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
+ and stack_term = config
+ and env_term = config * config (* cbv, cbn *)
+ and ens_term = config * config (* cbv, cbn *)
+
+ let to_env c = c,c
+ let to_ens c = c,c
+ let from_stack config = config
+ let from_stack_list_for_unwind ~unwind l = List.map unwind l
+ let from_env (c,_) = c
+ let from_ens (c,_) = c
+ let from_env_for_unwind ~unwind (_,c) = unwind c
+ let from_ens_for_unwind ~unwind (_,c) = unwind c
+ let stack_to_env ~reduce ~unwind config = reduce config, (0,[],[],unwind config,[])
+ let compute_to_env ~reduce ~unwind k e ens t = (k,e,ens,t,[]), (k,e,ens,t,[])
+ let compute_to_stack ~reduce ~unwind config = config
+ end
+;;
+
+
module CallByNameStrategy =
struct
type stack_term = Cic.term
type env_term = Cic.term
type ens_term = Cic.term
- let to_stack v = v
- let to_stack_list l = l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = v
let to_ens v = v
let from_stack ~unwind v = v
let from_stack_list ~unwind l = l
let from_env v = v
let from_ens v = v
+ let from_env_for_unwind ~unwind v = v
+ let from_ens_for_unwind ~unwind v = v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t = unwind k e ens t
let compute_to_env ~reduce ~unwind k e ens t = unwind k e ens t
type stack_term = Cic.term
type env_term = Cic.term
type ens_term = Cic.term
- let to_stack v = v
- let to_stack_list l = l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = v
let to_ens v = v
let from_stack ~unwind v = v
let from_stack_list ~unwind l = l
let from_env v = v
let from_ens v = v
+ let from_env_for_unwind ~unwind v = v
+ let from_ens_for_unwind ~unwind v = v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t = reduce (k,e,ens,t,[])
let compute_to_env ~reduce ~unwind k e ens t = reduce (k,e,ens,t,[])
type stack_term = Cic.term
type env_term = Cic.term
type ens_term = Cic.term
- let to_stack v = v
- let to_stack_list l = l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = v
let to_ens v = v
let from_stack ~unwind v = v
let from_stack_list ~unwind l = l
let from_env v = v
let from_ens v = v
+ let from_env_for_unwind ~unwind v = v
+ let from_ens_for_unwind ~unwind v = v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens =
function
type stack_term = Cic.term lazy_t
type env_term = Cic.term lazy_t
type ens_term = Cic.term lazy_t
- let to_stack v = lazy v
- let to_stack_list l = List.map to_stack l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = lazy v
let to_ens v = lazy v
let from_stack ~unwind v = Lazy.force v
let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
let from_env v = Lazy.force v
let from_ens v = Lazy.force v
+ let from_env_for_unwind ~unwind v = Lazy.force v
+ let from_ens_for_unwind ~unwind v = Lazy.force v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t = lazy (reduce (k,e,ens,t,[]))
let compute_to_env ~reduce ~unwind k e ens t = lazy (reduce (k,e,ens,t,[]))
type stack_term = Cic.term lazy_t
type env_term = Cic.term lazy_t
type ens_term = Cic.term lazy_t
- let to_stack v = lazy v
- let to_stack_list l = List.map to_stack l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = lazy v
let to_ens v = lazy v
let from_stack ~unwind v = Lazy.force v
let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
let from_env v = Lazy.force v
let from_ens v = Lazy.force v
+ let from_env_for_unwind ~unwind v = Lazy.force v
+ let from_ens_for_unwind ~unwind v = Lazy.force v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t =
lazy (
type stack_term = Cic.term lazy_t
type env_term = Cic.term lazy_t
type ens_term = Cic.term lazy_t
- let to_stack v = lazy v
- let to_stack_list l = List.map to_stack l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = lazy v
let to_ens v = lazy v
let from_stack ~unwind v = Lazy.force v
let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
let from_env v = Lazy.force v
let from_ens v = Lazy.force v
+ let from_env_for_unwind ~unwind v = Lazy.force v
+ let from_ens_for_unwind ~unwind v = Lazy.force v
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t = lazy (unwind k e ens t)
let compute_to_env ~reduce ~unwind k e ens t = lazy (unwind k e ens t)
type stack_term = reduce:bool -> Cic.term
type env_term = reduce:bool -> Cic.term
type ens_term = reduce:bool -> Cic.term
- let to_stack v =
- let value = lazy v in
- fun ~reduce -> Lazy.force value
- let to_stack_list l = List.map to_stack l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v =
let value = lazy v in
fun ~reduce -> Lazy.force value
let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
let from_env v = (v ~reduce:true)
let from_ens v = (v ~reduce:true)
+ let from_env_for_unwind ~unwind v = (v ~reduce:true)
+ let from_ens_for_unwind ~unwind v = (v ~reduce:true)
let stack_to_env ~reduce ~unwind v = v
let compute_to_stack ~reduce ~unwind k e ens t =
let svalue =
module ClosuresOnStackByValueFromEnvOrEnsStrategy =
struct
- type stack_term =
- int * Cic.term list * Cic.term Cic.explicit_named_substitution * Cic.term
- type env_term = Cic.term
- type ens_term = Cic.term
- let to_stack v = (0,[],[],v)
- let to_stack_list l = List.map to_stack l
- let to_env v = v
- let to_ens v = v
- let from_stack ~unwind (k,e,ens,t) = unwind k e ens t
- let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
+ and stack_term = config
+ and env_term = config
+ and ens_term = config
+
+ let to_env config = config
+ let to_ens config = config
+ let from_stack config = config
+ let from_stack_list_for_unwind ~unwind l = List.map unwind l
let from_env v = v
let from_ens v = v
- let stack_to_env ~reduce ~unwind (k,e,ens,t) = reduce (k,e,ens,t,[])
- let compute_to_env ~reduce ~unwind k e ens t =
- unwind k e ens t
- let compute_to_stack ~reduce ~unwind k e ens t = (k,e,ens,t)
+ let from_env_for_unwind ~unwind config = unwind config
+ let from_ens_for_unwind ~unwind config = unwind config
+ let stack_to_env ~reduce ~unwind config = reduce config
+ let compute_to_env ~reduce ~unwind k e ens t = (k,e,ens,t,[])
+ let compute_to_stack ~reduce ~unwind config = config
end
;;
int * Cic.term list * Cic.term Cic.explicit_named_substitution * Cic.term
type env_term = Cic.term
type ens_term = Cic.term
- let to_stack v = (0,[],[],v)
- let to_stack_list l = List.map to_stack l
+ type config = int * env_term list * ens_term Cic.explicit_named_substitution * Cic.term * stack_term list
let to_env v = v
let to_ens v = v
let from_stack ~unwind (k,e,ens,t) = unwind k e ens t
let from_stack_list ~unwind l = List.map (from_stack ~unwind) l
let from_env v = v
let from_ens v = v
+ let from_env_for_unwind ~unwind v = v
+ let from_ens_for_unwind ~unwind v = v
let stack_to_env ~reduce ~unwind (k,e,ens,t) =
match t with
Cic.Const _ as t -> unwind k e ens t
(* k is the length of the environment e *)
(* m is the current depth inside the term *)
- let unwind' m k e ens t =
+ let rec unwind' m k e ens t =
let module C = Cic in
let module S = CicSubstitution in
if k = 0 && ens = [] then
if n <= m then t else
let d =
try
- Some (RS.from_env (List.nth e (n-m-1)))
+ Some (RS.from_env_for_unwind ~unwind (List.nth e (n-m-1)))
with _ -> None
in
(match d with
debug_print (lazy ("%%%%%UWVAR " ^ String.concat " ; " (List.map (function (uri,t) -> UriManager.string_of_uri uri ^ " := " ^ CicPp.ppterm t) ens))) ;
*)
if List.exists (function (uri',_) -> UriManager.eq uri' uri) ens then
- CicSubstitution.lift m (RS.from_ens (List.assq uri ens))
+ CicSubstitution.lift m (RS.from_ens_for_unwind ~unwind (List.assq uri ens))
else
let params =
let o,_ =
&&
List.mem uri params
->
- (uri,CicSubstitution.lift m (RS.from_ens t)) ::
+ (uri,CicSubstitution.lift m (RS.from_ens_for_unwind ~unwind t)) ::
(filter_and_lift (uri::already_instantiated) tl)
| _::tl -> filter_and_lift already_instantiated tl
(*
(filter_and_lift [] (List.rev ens))
in
unwind_aux m t
- ;;
- let unwind = unwind' 0;;
+ and unwind (k,e,ens,t,s) =
+ let t' = unwind' 0 k e ens t in
+ if s = [] then t' else Cic.Appl (t'::(RS.from_stack_list_for_unwind ~unwind s))
+ ;;
(*
let unwind =
;;
*)
- let reduce ~delta ?(subst = []) context : config -> Cic.term =
+ let reduce ~delta ?(subst = []) context : config -> config =
let module C = Cic in
let module S = CicSubstitution in
let rec reduce =
function
- (k, e, _, C.Rel n, s) ->
- let d =
+ (k, e, _, C.Rel n, s) as config ->
+ let config' =
try
Some (RS.from_env (List.nth e (n-1)))
with
- _ ->
+ Failure _ ->
try
begin
match List.nth context (n - 1 - k) with
None -> assert false
| Some (_,C.Decl _) -> None
- | Some (_,C.Def (x,_)) -> Some (S.lift (n - k) x)
+ | Some (_,C.Def (x,_)) -> Some (0,[],[],S.lift (n - k) x,[])
end
with
- _ -> None
+ Failure _ -> None
in
- (match d with
- Some t' -> reduce (0,[],[],t',s)
- | None ->
- if s = [] then
- C.Rel (n-k)
- else C.Appl (C.Rel (n-k)::(RS.from_stack_list ~unwind s))
- )
- | (k, e, ens, (C.Var (uri,exp_named_subst) as t), s) ->
+ (match config' with
+ Some (k',e',ens',t',s') -> reduce (k',e',ens',t',s'@s)
+ | None -> config)
+ | (k, e, ens, C.Var (uri,exp_named_subst), s) as config ->
if List.exists (function (uri',_) -> UriManager.eq uri' uri) ens then
- reduce (0, [], [], RS.from_ens (List.assq uri ens), s)
+ let (k',e',ens',t',s') = RS.from_ens (List.assq uri ens) in
+ reduce (k',e',ens',t',s'@s)
else
( let o,_ =
CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
C.Constant _ -> raise ReferenceToConstant
| C.CurrentProof _ -> raise ReferenceToCurrentProof
| C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
- | C.Variable (_,None,_,_,_) ->
- let t' = unwind k e ens t in
- if s = [] then t' else
- C.Appl (t'::(RS.from_stack_list ~unwind s))
+ | C.Variable (_,None,_,_,_) -> config
| C.Variable (_,Some body,_,_,_) ->
let ens' = push_exp_named_subst k e ens exp_named_subst in
reduce (0, [], ens', body, s)
)
- | (k, e, ens, (C.Meta (n,l) as t), s) ->
+ | (k, e, ens, C.Meta (n,l), s) as config ->
(try
let (_, term,_) = CicUtil.lookup_subst n subst in
reduce (k, e, ens,CicSubstitution.subst_meta l term,s)
- with CicUtil.Subst_not_found _ ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s)))
- | (k, e, _, (C.Sort _ as t), s) -> t (* s should be empty *)
- | (k, e, _, (C.Implicit _ as t), s) -> t (* s should be empty *)
+ with CicUtil.Subst_not_found _ -> config)
+ | (_, _, _, C.Sort _, _)
+ | (_, _, _, C.Implicit _, _) as config -> config
| (k, e, ens, C.Cast (te,ty), s) ->
- reduce (k, e, ens, te, s) (* s should be empty *)
- | (k, e, ens, (C.Prod _ as t), s) ->
- unwind k e ens t (* s should be empty *)
- | (k, e, ens, (C.Lambda (_,_,t) as t'), []) -> unwind k e ens t'
+ reduce (k, e, ens, te, s)
+ | (_, _, _, C.Prod _, _) as config -> config
+ | (_, _, _, C.Lambda _, []) as config -> config
| (k, e, ens, C.Lambda (_,_,t), p::s) ->
reduce (k+1, (RS.stack_to_env ~reduce ~unwind p)::e, ens, t,s)
| (k, e, ens, C.LetIn (_,m,t), s) ->
| (k, e, ens, C.Appl (he::tl), s) ->
let tl' =
List.map
- (function t -> RS.compute_to_stack ~reduce ~unwind k e ens t) tl
+ (function t -> RS.compute_to_stack ~reduce ~unwind (k,e,ens,t,[])) tl
in
reduce (k, e, ens, he, (List.append tl') s)
(* CSC: Old Dead Code
| (k, e, ens, C.Appl l, s) ->
C.Appl (List.append (List.map (unwind k e ens) l) s)
*)
- | (k, e, ens, (C.Const (uri,exp_named_subst) as t), s) when delta=false->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
- | (k, e, ens, (C.Const (uri,exp_named_subst) as t), s) ->
+ | (_, _, _, C.Const _, _) as config when delta=false-> config
+ | (k, e, ens, C.Const (uri,exp_named_subst), s) as config ->
(let o,_ =
CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
in
let ens' = push_exp_named_subst k e ens exp_named_subst in
(* constants are closed *)
reduce (0, [], ens', body, s)
- | C.Constant (_,None,_,_,_) ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
+ | C.Constant (_,None,_,_,_) -> config
| C.Variable _ -> raise ReferenceToVariable
| C.CurrentProof (_,_,body,_,_,_) ->
let ens' = push_exp_named_subst k e ens exp_named_subst in
reduce (0, [], ens', body, s)
| C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
)
- | (k, e, ens, (C.MutInd _ as t),s) ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
- | (k, e, ens, (C.MutConstruct _ as t),s) ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
- | (k, e, ens, (C.MutCase (mutind,i,_,term,pl) as t),s) ->
+ | (_, _, _, C.MutInd _, _)
+ | (_, _, _, C.MutConstruct _, _) as config -> config
+ | (k, e, ens, C.MutCase (mutind,i,outty,term,pl),s) as config ->
let decofix =
function
- C.CoFix (i,fl) ->
+ (k, e, ens, C.CoFix (i,fl), s) ->
let (_,_,body) = List.nth fl i in
let body' =
let counter = ref (List.length fl) in
fl
body
in
- (* the term is the result of a reduction; *)
- (* so it is already unwinded. *)
- reduce (0,[],[],body',[])
- | C.Appl (C.CoFix (i,fl) :: tl) ->
- let (_,_,body) = List.nth fl i in
- let body' =
- let counter = ref (List.length fl) in
- List.fold_right
- (fun _ -> decr counter ; S.subst (C.CoFix (!counter,fl)))
- fl
- body
- in
- (* the term is the result of a reduction; *)
- (* so it is already unwinded. *)
- reduce (0,[],[],body',RS.to_stack_list tl)
- | t -> t
+ reduce (k,e,ens,body',s)
+ | config -> config
in
(match decofix (reduce (k,e,ens,term,[])) with
- C.MutConstruct (_,_,j,_) ->
- reduce (k, e, ens, (List.nth pl (j-1)), s)
- | C.Appl (C.MutConstruct (_,_,j,_) :: tl) ->
+ (k', e', ens', C.MutConstruct (_,_,j,_), []) ->
+ reduce (k, e, ens, (List.nth pl (j-1)), [])
+ | (k', e', ens', C.MutConstruct (_,_,j,_), s') ->
let (arity, r) =
let o,_ =
CicEnvironment.get_cooked_obj CicUniv.empty_ugraph mutind
in
match o with
- C.InductiveDefinition (tl,ingredients,r,_) ->
- let (_,_,arity,_) = List.nth tl i in
+ C.InductiveDefinition (s,ingredients,r,_) ->
+ let (_,_,arity,_) = List.nth s i in
(arity,r)
| _ -> raise WrongUriToInductiveDefinition
in
let rec eat_first =
function
(0,l) -> l
- | (n,he::tl) when n > 0 -> eat_first (n - 1, tl)
+ | (n,he::s) when n > 0 -> eat_first (n - 1, s)
| _ -> raise (Impossible 5)
in
- eat_first (num_to_eat,tl)
+ eat_first (num_to_eat,s')
in
- (* ts are already unwinded because they are a sublist of tl *)
- reduce (k, e, ens, (List.nth pl (j-1)), (RS.to_stack_list ts)@s)
- | C.Cast _ | C.Implicit _ ->
+ reduce (k, e, ens, (List.nth pl (j-1)), ts@s)
+ | (_, _, _, C.Cast _, _)
+ | (_, _, _, C.Implicit _, _) ->
raise (Impossible 2) (* we don't trust our whd ;-) *)
- | _ ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
- )
- | (k, e, ens, (C.Fix (i,fl) as t), s) ->
+ | config' ->
+ (*CSC: here I am unwinding the configuration and for sure I
+ will do it twice; to avoid this unwinding I should push the
+ "match [] with _" continuation on the stack;
+ another possibility is to just return the original configuration,
+ partially undoing the weak-head computation *)
+ (*this code is uncorrect since term' lives in e' <> e
+ let term' = unwind config' in
+ (k, e, ens, C.MutCase (mutind,i,outty,term',pl),s)
+ *)
+ config)
+ | (k, e, ens, C.Fix (i,fl), s) as config ->
let (_,recindex,_,body) = List.nth fl i in
let recparam =
try
- Some (RS.from_stack ~unwind (List.nth s recindex))
+ Some (RS.from_stack (List.nth s recindex))
with
_ -> None
in
(match recparam with
Some recparam ->
- (match reduce (0,[],[],recparam,[]) with
+ (match reduce recparam with
(* match recparam with *)
- C.MutConstruct _
- | C.Appl ((C.MutConstruct _)::_) ->
+ (_,_,_,C.MutConstruct _,_) as config ->
(* OLD
let body' =
let counter = ref (List.length fl) in
reduce (k, e, ens, body', s) *)
(* NEW *)
let leng = List.length fl in
- let fl' =
- let unwind_fl (name,recindex,typ,body) =
- (name,recindex,unwind k e ens typ,
- unwind' leng k e ens body)
+ let new_env =
+ let counter = ref 0 in
+ let rec build_env e =
+ if !counter = leng then e
+ else
+ (incr counter ;
+ build_env
+ ((RS.to_env (k,e,ens,C.Fix (!counter -1, fl),[]))::e))
in
- List.map unwind_fl fl
+ build_env e
in
- let new_env =
- let counter = ref 0 in
- let rec build_env e =
- if !counter = leng then e
- else
- (incr counter ;
- build_env ((RS.to_env (C.Fix (!counter -1, fl')))::e))
- in
- build_env e
- in
- reduce (k+leng, new_env, ens, body, s)
- | _ ->
- let t' = unwind k e ens t in
- if s = [] then t' else
- C.Appl (t'::(RS.from_stack_list ~unwind s))
- )
- | None ->
- let t' = unwind k e ens t in
- if s = [] then t' else
- C.Appl (t'::(RS.from_stack_list ~unwind s))
+ let rec replace i s t =
+ match i,s with
+ 0,_::tl -> t::tl
+ | n,he::tl -> he::(replace (n - 1) tl t)
+ | _,_ -> assert false in
+ let new_s =
+ replace recindex s (RS.compute_to_stack ~reduce ~unwind config)
+ in
+ reduce (k+leng, new_env, ens, body, new_s)
+ | _ -> config)
+ | None -> config
)
- | (k, e, ens, (C.CoFix (i,fl) as t),s) ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
+ | (_,_,_,C.CoFix _,_) as config -> config
and push_exp_named_subst k e ens =
function
[] -> ens
| (uri,t)::tl ->
- push_exp_named_subst k e ((uri,RS.to_ens (unwind k e ens t))::ens) tl
+ push_exp_named_subst k e ((uri,RS.to_ens (k,e,ens,t,[]))::ens) tl
in
- reduce
+ reduce
;;
(*
let rec whd context t =
;;
*)
- let rec whd ?(delta=true) ?(subst=[]) context t =
- reduce ~delta ~subst context (0, [], [], t, [])
+ let whd ?(delta=true) ?(subst=[]) context t =
+ unwind (reduce ~delta ~subst context (0, [], [], t, []))
;;
ClosuresOnStackByValueFromEnvOrEnsByNameOnConstantsStrategy;; OK 58.094s
module R = Reduction(ClosuresOnStackByValueFromEnvOrEnsStrategy);; OK 58.127s
*)
+(*module R = Reduction(CallByValueByNameForUnwind);; *)
module R = Reduction(ClosuresOnStackByValueFromEnvOrEnsStrategy);;
module U = UriManager;;
| (_,_) -> false,ugraph
end
in
- begin
+ begin
debug t1 [t2] "PREWHD";
- (*
- (match t1 with
- Cic.Meta _ ->
- debug_print (lazy (CicPp.ppterm t1));
- debug_print (lazy (CicPp.ppterm (whd ~subst context t1)));
- debug_print (lazy (CicPp.ppterm t2));
- debug_print (lazy (CicPp.ppterm (whd ~subst context t2)))
- | _ -> ()); *)
let t1' = whd ?delta:(Some true) ?subst:(Some subst) context t1 in
let t2' = whd ?delta:(Some true) ?subst:(Some subst) context t2 in
debug t1' [t2'] "POSTWHD";
projects / helm.git / commitdiff