1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

use crate::At;
use core::ops;
use multiref::Slice;

impl<T> At<usize> for Slice<T> {
    type View = T;

    fn access_at<R, F>(&mut self, i: usize, f: F) -> Option<R> where
        F: FnOnce(&mut T) -> R
    {
        self.as_mut().access_at(i, |x| f(*x))
    }
}


impl<T> At<ops::Range<usize>> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::Range<usize>, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}


impl<T> At<ops::RangeFrom<usize>> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::RangeFrom<usize>, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}


impl<T> At<ops::RangeFull> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::RangeFull, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}


impl<T> At<ops::RangeInclusive<usize>> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::RangeInclusive<usize>, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}


impl<T> At<ops::RangeTo<usize>> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::RangeTo<usize>, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}


impl<T> At<ops::RangeToInclusive<usize>> for Slice<T> {
    type View = Slice<T>;
    
    fn access_at<R, F>(&mut self, i: ops::RangeToInclusive<usize>, f: F) -> Option<R> where 
        F: FnOnce(&mut Self::View) -> R 
    {
        self.as_mut().access_at(i, |subslice| f(Slice::new_mut(subslice)))
    }
}