orx_linked_list/iter/
doubly_iter.rs

1use super::doubly_iter_ptr::DoublyIterPtr;
2use crate::Doubly;
3use core::iter::FusedIterator;
4use orx_pinned_vec::PinnedVec;
5use orx_selfref_col::{CoreCol, Node, NodePtr};
6
7/// An ordered iterator over elements of the doubly linked list.
8///
9/// Can be created by calling the `iter` method.
10pub struct DoublyIter<'a, T, P>(DoublyIterPtr<'a, T, P>)
11where
12    P: PinnedVec<Node<Doubly<T>>>;
13
14impl<'a, T, P> DoublyIter<'a, T, P>
15where
16    P: PinnedVec<Node<Doubly<T>>>,
17{
18    pub(crate) fn new(
19        col: &'a CoreCol<Doubly<T>, P>,
20        current: Option<NodePtr<Doubly<T>>>,
21        current_back: Option<NodePtr<Doubly<T>>>,
22    ) -> Self {
23        Self(DoublyIterPtr::new(col, current, current_back))
24    }
25}
26
27impl<'a, T, P> Iterator for DoublyIter<'a, T, P>
28where
29    P: PinnedVec<Node<Doubly<T>>>,
30{
31    type Item = &'a T;
32
33    #[inline(always)]
34    fn next(&mut self) -> Option<Self::Item> {
35        self.0
36            .next()
37            .map(|p| unsafe { self.0.col.data_unchecked(&p) })
38    }
39}
40
41impl<T, P> DoubleEndedIterator for DoublyIter<'_, T, P>
42where
43    P: PinnedVec<Node<Doubly<T>>>,
44{
45    #[inline(always)]
46    fn next_back(&mut self) -> Option<Self::Item> {
47        self.0
48            .next_back()
49            .map(|p| unsafe { self.0.col.data_unchecked(&p) })
50    }
51}
52
53impl<T, P> FusedIterator for DoublyIter<'_, T, P> where P: PinnedVec<Node<Doubly<T>>> {}
54
55impl<T, P> Clone for DoublyIter<'_, T, P>
56where
57    P: PinnedVec<Node<Doubly<T>>>,
58{
59    fn clone(&self) -> Self {
60        Self(self.0.clone())
61    }
62}
orx_linked_list/iter/doubly_iter.rs

orx_linked_list/iter/
doubly_iter.rs
