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-rw-r--r--backends/coq/Primitives.v21
1 files changed, 21 insertions, 0 deletions
diff --git a/backends/coq/Primitives.v b/backends/coq/Primitives.v
index e6d3118f..990e27e4 100644
--- a/backends/coq/Primitives.v
+++ b/backends/coq/Primitives.v
@@ -585,6 +585,13 @@ Axiom array_repeat : forall (T : Type) (n : usize) (x : T), array T n.
Axiom array_index_usize : forall (T : Type) (n : usize) (x : array T n) (i : usize), result T.
Axiom array_update_usize : forall (T : Type) (n : usize) (x : array T n) (i : usize) (nx : T), result (array T n).
+Definition array_index_mut_usize (T : Type) (n : usize) (a : array T n) (i : usize) :
+ 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)
+ end.
+
(*** Slice *)
Definition slice T := { l: list T | Z.of_nat (length l) <= usize_max}.
@@ -592,11 +599,25 @@ Axiom slice_len : forall (T : Type) (s : slice T), usize.
Axiom slice_index_usize : forall (T : Type) (x : slice T) (i : usize), result T.
Axiom slice_update_usize : forall (T : Type) (x : slice T) (i : usize) (nx : T), result (slice T).
+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)
+ end.
+
(*** Subslices *)
Axiom array_to_slice : forall (T : Type) (n : usize) (x : array T n), result (slice T).
Axiom array_from_slice : forall (T : Type) (n : usize) (x : array T n) (s : slice T), result (array T n).
+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)
+ end.
+
Axiom array_subslice: forall (T : Type) (n : usize) (x : array T n) (r : core_ops_range_Range usize), result (slice T).
Axiom array_update_subslice: forall (T : Type) (n : usize) (x : array T n) (r : core_ops_range_Range usize) (ns : slice T), result (array T n).