vstd/std_specs/
clone.rs

1use super::super::prelude::*;
2use core::clone::Clone;
3
4verus! {
5
6#[verifier::external_trait_specification]
7pub trait ExClone: Sized {
8    type ExternalTraitSpecificationFor: core::clone::Clone;
9
10    fn clone(&self) -> Self;
11}
12
13/*
14#[verifier::external_fn_specification]
15pub fn ex_clone_clone_from<T: Clone>(a: &mut T, b: &T)
16{
17    a.clone_from(b)
18}
19*/
20
21pub assume_specification[ <bool as Clone>::clone ](b: &bool) -> (res: bool)
22    returns
23        b,
24;
25
26pub assume_specification[ <char as Clone>::clone ](c: &char) -> (res: char)
27    returns
28        c,
29;
30
31#[allow(suspicious_double_ref_op)]
32pub assume_specification<'b, T: core::marker::PointeeSized, 'a>[ <&'b T as Clone>::clone ](
33    b: &'a &'b T,
34) -> (res: &'b T)
35    ensures
36        res == b,
37;
38
39pub assume_specification<T: Clone, const N: usize>[ <[T; N] as Clone>::clone ](a: &[T; N]) -> (res:
40    [T; N])
41    ensures
42        forall|i| #![all_triggers] 0 <= i < N ==> cloned::<T>(a@[i], res@[i]),
43        a@ =~= res@ ==> a@ == res@,
44;
45
46/*
47#[verifier::external_fn_specification]
48pub fn ex_bool_clone_from(dest: &mut bool, source: &bool)
49    ensures *dest == source,
50{
51    dest.clone_from(source)
52}
53*/
54
55// Cloning a Tracked copies the underlying ghost T
56pub assume_specification<T: Copy>[ <Tracked<T> as Clone>::clone ](b: &Tracked<T>) -> (res: Tracked<
57    T,
58>)
59    ensures
60        res == b,
61;
62
63pub assume_specification<T>[ <Ghost<T> as Clone>::clone ](b: &Ghost<T>) -> (res: Ghost<T>)
64    ensures
65        res == b,
66;
67
68} // verus!
vstd/std_specs/clone.rs

vstd/std_specs/
clone.rs
