Commit 95c9f925 authored by Sebastian Dröge's avatar Sebastian Dröge 🍵
Browse files

Add StreamCollection::iter()

parent 67a46b3b
......@@ -125,6 +125,8 @@ pub use enums::{ClockError, ClockSuccess, FlowError, FlowSuccess, PadLinkError,
pub use clock_time::ClockTime;
mod plugin;
#[cfg(any(feature = "v1_10", feature = "dox"))]
pub mod stream_collection;
mod typefind;
pub use typefind::*;
......
// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use StreamCollection;
use Stream;
pub struct Iter<'a> {
collection: &'a StreamCollection,
idx: u32,
size: u32,
}
impl<'a> Iter<'a> {
fn new(collection: &'a StreamCollection) -> Iter<'a> {
skip_assert_initialized!();
Iter {
collection: collection,
idx: 0,
size: collection.len() as u32,
}
}
}
impl<'a> Iterator for Iter<'a> {
type Item = Stream;
fn next(&mut self) -> Option<Self::Item> {
if self.idx >= self.size {
return None;
}
let item = self.collection.get_stream(self.idx);
self.idx += 1;
item
}
fn size_hint(&self) -> (usize, Option<usize>) {
if self.idx == self.size {
return (0, Some(0));
}
let remaining = (self.size - self.idx) as usize;
(remaining, Some(remaining))
}
}
impl<'a> DoubleEndedIterator for Iter<'a> {
fn next_back(&mut self) -> Option<Self::Item> {
if self.idx == self.size {
return None;
}
self.size -= 1;
self.collection.get_stream(self.size)
}
}
impl<'a> ExactSizeIterator for Iter<'a> {}
impl StreamCollection {
pub fn iter(&self) -> Iter {
Iter::new(self)
}
pub fn len(&self) -> usize {
self.get_size() as usize
}
}
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