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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

use crate::ImpVec;
use orx_pinned_vec::PinnedVec;
use orx_split_vec::{Growth, SplitVec};

impl<T, P1, P2> PartialEq<ImpVec<T, P2>> for ImpVec<T, P1>
where
    P1: PinnedVec<T>,
    P2: PinnedVec<T>,
    T: PartialEq,
{
    fn eq(&self, other: &ImpVec<T, P2>) -> bool {
        if self.len() == other.len() {
            self.iter().zip(other.iter()).all(|(x, y)| x == y)
        } else {
            false
        }
    }
}
impl<T, P> Eq for ImpVec<T, P>
where
    P: PinnedVec<T>,
    T: PartialEq,
{
}

impl<T, P, S> PartialEq<S> for ImpVec<T, P>
where
    P: PinnedVec<T>,
    S: AsRef<[T]>,
    T: PartialEq,
{
    fn eq(&self, other: &S) -> bool {
        self.cell.borrow().partial_eq(other.as_ref())
    }
}

impl<T, P> PartialEq<ImpVec<T, P>> for Vec<T>
where
    P: PinnedVec<T>,
    T: PartialEq,
{
    fn eq(&self, other: &ImpVec<T, P>) -> bool {
        other.cell.borrow().partial_eq(self)
    }
}
impl<T, P, const N: usize> PartialEq<ImpVec<T, P>> for [T; N]
where
    P: PinnedVec<T>,
    T: PartialEq,
{
    fn eq(&self, other: &ImpVec<T, P>) -> bool {
        other.cell.borrow().partial_eq(self)
    }
}

impl<T, P, G> PartialEq<ImpVec<T, P>> for SplitVec<T, G>
where
    P: PinnedVec<T>,
    T: PartialEq,
    G: Growth,
{
    fn eq(&self, other: &ImpVec<T, P>) -> bool {
        self.len() == other.len() && self.iter().zip(other.iter()).all(|(x, y)| x == y)
    }
}

#[cfg(test)]
mod tests {
    use crate::prelude::*;
    use crate::test_all_pinned_types;

    #[test]
    fn eq_with_imp() {
        fn test<P: PinnedVec<usize>>(pinned_vec: P) {
            let imp1: ImpVec<_, _> = pinned_vec.into();
            let imp2: ImpVec<_, _> = FixedVec::new(3344).into();

            for i in 0..1000 {
                imp1.push(i);
                imp2.push(i);
            }
            assert_eq!(imp1, imp2);
            assert_eq!(imp2, imp1);

            imp2.push(1000);
            assert_ne!(imp1, imp2);
            assert_ne!(imp2, imp1);
        }

        test_all_pinned_types!(test);
    }

    #[test]
    fn eq_with_asref() {
        fn test<P: PinnedVec<usize>>(pinned_vec: P) {
            let imp: ImpVec<_, _> = pinned_vec.into();
            let mut vec = vec![];

            for i in 0..1000 {
                imp.push(i);
                vec.push(i);
            }
            assert_eq!(vec, imp);
            assert_eq!(imp, vec);
            assert_eq!(imp, vec.as_slice());
            assert_eq!(imp, &vec);
        }

        test_all_pinned_types!(test);
    }

    #[test]
    fn eq_with_slice() {
        fn test<P: PinnedVec<usize>>(pinned_vec: P) {
            let imp: ImpVec<_, _> = pinned_vec.into();
            for i in 0..4 {
                imp.push(i);
            }
            assert_eq!(vec![0, 1, 2, 3], imp);
            assert_eq!(imp, &[0, 1, 2, 3]);
        }

        test_all_pinned_types!(test);
    }

    #[test]
    fn eq_with_array() {
        fn test<P: PinnedVec<usize>>(pinned_vec: P) {
            let imp: ImpVec<_, _> = pinned_vec.into();
            for i in 0..4 {
                imp.push(i);
            }
            assert_eq!([0, 1, 2, 3], imp);
            assert_eq!(imp, [0, 1, 2, 3]);
        }

        test_all_pinned_types!(test);
    }

    #[test]
    fn eq_with_split() {
        fn test<P: PinnedVec<usize>>(pinned_vec: P) {
            let imp: ImpVec<_, _> = pinned_vec.into();
            let mut split = SplitVec::new();
            for i in 0..42 {
                imp.push(i);
                split.push(i);
            }
            assert_eq!(split, imp);
        }

        test_all_pinned_types!(test);
    }
}