1 //! This module contains the parallel iterator types for B-Tree maps 2 //! (`BTreeMap<K, V>`). You will rarely need to interact with it directly 3 //! unless you have need to name one of the iterator types. 4 5 use std::collections::BTreeMap; 6 7 use crate::iter::plumbing::*; 8 use crate::iter::*; 9 10 use crate::vec; 11 12 /// Parallel iterator over a B-Tree map 13 #[derive(Debug)] // std doesn't Clone 14 pub struct IntoIter<K: Ord + Send, V: Send> { 15 inner: vec::IntoIter<(K, V)>, 16 } 17 18 into_par_vec! { 19 BTreeMap<K, V> => IntoIter<K, V>, 20 impl<K: Ord + Send, V: Send> 21 } 22 23 delegate_iterator! { 24 IntoIter<K, V> => (K, V), 25 impl<K: Ord + Send, V: Send> 26 } 27 28 /// Parallel iterator over an immutable reference to a B-Tree map 29 #[derive(Debug)] 30 pub struct Iter<'a, K: Ord + Sync, V: Sync> { 31 inner: vec::IntoIter<(&'a K, &'a V)>, 32 } 33 34 impl<'a, K: Ord + Sync, V: Sync> Clone for Iter<'a, K, V> { clone(&self) -> Self35 fn clone(&self) -> Self { 36 Iter { 37 inner: self.inner.clone(), 38 } 39 } 40 } 41 42 into_par_vec! { 43 &'a BTreeMap<K, V> => Iter<'a, K, V>, 44 impl<'a, K: Ord + Sync, V: Sync> 45 } 46 47 delegate_iterator! { 48 Iter<'a, K, V> => (&'a K, &'a V), 49 impl<'a, K: Ord + Sync + 'a, V: Sync + 'a> 50 } 51 52 /// Parallel iterator over a mutable reference to a B-Tree map 53 #[derive(Debug)] 54 pub struct IterMut<'a, K: Ord + Sync, V: Send> { 55 inner: vec::IntoIter<(&'a K, &'a mut V)>, 56 } 57 58 into_par_vec! { 59 &'a mut BTreeMap<K, V> => IterMut<'a, K, V>, 60 impl<'a, K: Ord + Sync, V: Send> 61 } 62 63 delegate_iterator! { 64 IterMut<'a, K, V> => (&'a K, &'a mut V), 65 impl<'a, K: Ord + Sync + 'a, V: Send + 'a> 66 } 67