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#[verifier::external_trait_specification]
14pub trait ExCopy: Clone {
15    type ExternalTraitSpecificationFor: core::marker::Copy;
16}
17
18/*
19#[verifier::external_fn_specification]
20pub fn ex_clone_clone_from<T: Clone>(a: &mut T, b: &T)
21{
22    a.clone_from(b)
23}
24*/
25
26pub assume_specification[ <bool as Clone>::clone ](b: &bool) -> (res: bool)
27    returns
28        b,
29;
30
31pub assume_specification[ <char as Clone>::clone ](c: &char) -> (res: char)
32    returns
33        c,
34;
35
36#[allow(suspicious_double_ref_op)]
37pub assume_specification<'b, T: core::marker::PointeeSized, 'a>[ <&'b T as Clone>::clone ](
38    b: &'a &'b T,
39) -> (res: &'b T)
40    ensures
41        res == b,
42;
43
44pub assume_specification<T: Clone, const N: usize>[ <[T; N] as Clone>::clone ](a: &[T; N]) -> (res:
45    [T; N])
46    ensures
47        forall|i| #![all_triggers] 0 <= i < N ==> cloned::<T>(a@[i], res@[i]),
48        a@ =~= res@ ==> a@ == res@,
49;
50
51/*
52#[verifier::external_fn_specification]
53pub fn ex_bool_clone_from(dest: &mut bool, source: &bool)
54    ensures *dest == source,
55{
56    dest.clone_from(source)
57}
58*/
59
60// Cloning a Tracked copies the underlying ghost T
61pub assume_specification<T: Copy>[ <Tracked<T> as Clone>::clone ](b: &Tracked<T>) -> (res: Tracked<
62    T,
63>)
64    ensures
65        res == b,
66;
67
68pub assume_specification<T>[ <Ghost<T> as Clone>::clone ](b: &Ghost<T>) -> (res: Ghost<T>)
69    ensures
70        res == b,
71;
72
73} // verus!
vstd/std_specs/clone.rs

vstd/std_specs/
clone.rs
