bitstring/fixed_bit_string/
iter.rs

1use super::traits::FixedBitString;
2
3/// Iterator to iterate over all
4/// [`FixedBitString`](trait.FixedBitString.html) values with a shared
5/// prefix.
6///
7/// Created by
8/// [`FixedBitString::iter()`](trait.FixedBitString.html#method.iter).
9#[derive(Clone, Debug)]
10pub struct Iter<B> {
11	next: Option<B>,
12	prefix: usize,
13}
14
15impl<B: FixedBitString> Iter<B> {
16	#[doc(hidden)]
17	// internal use only, will become pub(crate)
18	pub fn new(start: B, prefix: usize) -> Self {
19		Iter {
20			next: Some(start),
21			prefix,
22		}
23	}
24}
25
26impl<B: FixedBitString + Clone> Iterator for Iter<B> {
27	type Item = B;
28
29	fn next(&mut self) -> Option<Self::Item> {
30		let mut overflow = false;
31		let result = match self.next {
32			None => None,
33			Some(ref mut next) => {
34				let result = Some(next.clone());
35				overflow = next.inc(self.prefix);
36				result
37			},
38		};
39		if overflow {
40			self.next = None;
41		}
42		result
43	}
44}
bitstring/fixed_bit_string/iter.rs

bitstring/fixed_bit_string/
iter.rs
