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-rw-r--r--backends/coq/Primitives.v46
1 files changed, 23 insertions, 23 deletions
diff --git a/backends/coq/Primitives.v b/backends/coq/Primitives.v
index 990e27e4..e84d65ce 100644
--- a/backends/coq/Primitives.v
+++ b/backends/coq/Primitives.v
@@ -19,19 +19,19 @@ Inductive error :=
| OutOfFuel.
Inductive result A :=
- | Return : A -> result A
+ | Ok : A -> result A
| Fail_ : error -> result A.
-Arguments Return {_} a.
+Arguments Ok {_} a.
Arguments Fail_ {_}.
Definition bind {A B} (m: result A) (f: A -> result B) : result B :=
match m with
| Fail_ e => Fail_ e
- | Return x => f x
+ | Ok x => f x
end.
-Definition return_ {A: Type} (x: A) : result A := Return x.
+Definition return_ {A: Type} (x: A) : result A := Ok x.
Definition fail_ {A: Type} (e: error) : result A := Fail_ e.
Notation "x <- c1 ; c2" := (bind c1 (fun x => c2))
@@ -39,27 +39,27 @@ Notation "x <- c1 ; c2" := (bind c1 (fun x => c2))
(** Monadic assert *)
Definition massert (b: bool) : result unit :=
- if b then Return tt else Fail_ Failure.
+ if b then Ok tt else Fail_ Failure.
(** Normalize and unwrap a successful result (used for globals) *)
-Definition eval_result_refl {A} {x} (a: result A) (p: a = Return x) : A :=
- match a as r return (r = Return x -> A) with
- | Return a' => fun _ => a'
+Definition eval_result_refl {A} {x} (a: result A) (p: a = Ok x) : A :=
+ match a as r return (r = Ok x -> A) with
+ | Ok a' => fun _ => a'
| Fail_ e => fun p' =>
False_rect _ (eq_ind (Fail_ e)
(fun e : result A =>
match e with
- | Return _ => False
+ | Ok _ => False
| Fail_ e => True
end)
- I (Return x) p')
+ I (Ok x) p')
end p.
Notation "x %global" := (eval_result_refl x eq_refl) (at level 40).
Notation "x %return" := (eval_result_refl x eq_refl) (at level 40).
(* Sanity check *)
-Check (if true then Return (1 + 2) else Fail_ Failure)%global = 3.
+Check (if true then Ok (1 + 2) else Fail_ Failure)%global = 3.
(*** Misc *)
@@ -236,7 +236,7 @@ Import Sumbool.
Definition mk_scalar (ty: scalar_ty) (x: Z) : result (scalar ty) :=
match sumbool_of_bool (scalar_in_bounds ty x) with
- | left H => Return (exist _ x (scalar_in_bounds_valid _ _ H))
+ | left H => Ok (exist _ x (scalar_in_bounds_valid _ _ H))
| right _ => Fail_ Failure
end.
@@ -544,9 +544,9 @@ Arguments core_ops_range_Range_end_ {_}.
(*** [alloc] *)
-Definition alloc_boxed_Box_deref (T : Type) (x : T) : result T := Return x.
+Definition alloc_boxed_Box_deref (T : Type) (x : T) : result T := Ok x.
Definition alloc_boxed_Box_deref_mut (T : Type) (x : T) : result (T * (T -> result T)) :=
- Return (x, fun x => Return x).
+ Ok (x, fun x => Ok x).
(* Trait instance *)
Definition alloc_boxed_Box_coreopsDerefInst (Self : Type) : core_ops_deref_Deref Self := {|
@@ -589,7 +589,7 @@ Definition array_index_mut_usize (T : Type) (n : usize) (a : array T n) (i : usi
result (T * (T -> result (array T n))) :=
match array_index_usize T n a i with
| Fail_ e => Fail_ e
- | Return x => Return (x, array_update_usize T n a i)
+ | Ok x => Ok (x, array_update_usize T n a i)
end.
(*** Slice *)
@@ -603,7 +603,7 @@ Definition slice_index_mut_usize (T : Type) (s : slice T) (i : usize) :
result (T * (T -> result (slice T))) :=
match slice_index_usize T s i with
| Fail_ e => Fail_ e
- | Return x => Return (x, slice_update_usize T s i)
+ | Ok x => Ok (x, slice_update_usize T s i)
end.
(*** Subslices *)
@@ -615,7 +615,7 @@ Definition array_to_slice_mut (T : Type) (n : usize) (a : array T n) :
result (slice T * (slice T -> result (array T n))) :=
match array_to_slice T n a with
| Fail_ e => Fail_ e
- | Return x => Return (x, array_from_slice T n a)
+ | Ok x => Ok (x, array_from_slice T n a)
end.
Axiom array_subslice: forall (T : Type) (n : usize) (x : array T n) (r : core_ops_range_Range usize), result (slice T).
@@ -657,17 +657,17 @@ end end.
Definition alloc_vec_Vec_bind {A B} (v: alloc_vec_Vec A) (f: list A -> result (list B)) : result (alloc_vec_Vec B) :=
l <- f (alloc_vec_Vec_to_list v) ;
match sumbool_of_bool (scalar_le_max Usize (Z.of_nat (length l))) with
- | left H => Return (exist _ l (scalar_le_max_valid _ _ H))
+ | left H => Ok (exist _ l (scalar_le_max_valid _ _ H))
| right _ => Fail_ Failure
end.
Definition alloc_vec_Vec_push (T: Type) (v: alloc_vec_Vec T) (x: T) : result (alloc_vec_Vec T) :=
- alloc_vec_Vec_bind v (fun l => Return (l ++ [x])).
+ alloc_vec_Vec_bind v (fun l => Ok (l ++ [x])).
Definition alloc_vec_Vec_insert (T: Type) (v: alloc_vec_Vec T) (i: usize) (x: T) : result (alloc_vec_Vec T) :=
alloc_vec_Vec_bind v (fun l =>
if to_Z i <? Z.of_nat (length l)
- then Return (list_update l (usize_to_nat i) x)
+ then Ok (list_update l (usize_to_nat i) x)
else Fail_ Failure).
(* Helper *)
@@ -679,8 +679,8 @@ Axiom alloc_vec_Vec_update_usize : forall {T : Type} (v : alloc_vec_Vec T) (i :
Definition alloc_vec_Vec_index_mut_usize {T : Type} (v: alloc_vec_Vec T) (i: usize) :
result (T * (T -> result (alloc_vec_Vec T))) :=
match alloc_vec_Vec_index_usize v i with
- | Return x =>
- Return (x, alloc_vec_Vec_update_usize v i)
+ | Ok x =>
+ Ok (x, alloc_vec_Vec_update_usize v i)
| Fail_ e => Fail_ e
end.
@@ -717,7 +717,7 @@ Definition core_slice_index_Slice_index
x <- inst.(core_slice_index_SliceIndex_get) i s;
match x with
| None => Fail_ Failure
- | Some x => Return x
+ | Some x => Ok x
end.
(* [core::slice::index::Range:::get]: forward function *)