From d7a2ae6c42f1d9755178485fd93f234c2df8a8fe Mon Sep 17 00:00:00 2001 From: Daniel Micay Date: Fri, 19 Apr 2013 09:18:22 -0400 Subject: [PATCH] re-organize the iterator module a bit --- src/libcore/iterator.rs | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/src/libcore/iterator.rs b/src/libcore/iterator.rs index 5e0b8df8c33..50939ba7faf 100644 --- a/src/libcore/iterator.rs +++ b/src/libcore/iterator.rs @@ -22,11 +22,11 @@ pub trait IteratorUtil { // FIXME: #5898: should be called map fn transform<'r, B>(self, f: &'r fn(A) -> B) -> MapIterator<'r, A, B, Self>; fn filter<'r>(self, predicate: &'r fn(&A) -> bool) -> FilterIterator<'r, A, Self>; + fn enumerate(self) -> EnumerateIterator; fn skip_while<'r>(self, predicate: &'r fn(&A) -> bool) -> SkipWhileIterator<'r, A, Self>; fn take_while<'r>(self, predicate: &'r fn(&A) -> bool) -> TakeWhileIterator<'r, A, Self>; fn skip(self, n: uint) -> SkipIterator; fn take(self, n: uint) -> TakeIterator; - fn enumerate(self) -> EnumerateIterator; fn advance(&mut self, f: &fn(A) -> bool); } @@ -101,6 +101,21 @@ impl, U: Iterator> Iterator<(A, B)> for ZipIterator { + priv iter: T, + priv f: &'self fn(A) -> B +} + +impl<'self, A, B, T: Iterator> Iterator for MapIterator<'self, A, B, T> { + #[inline] + fn next(&mut self) -> Option { + match self.iter.next() { + Some(a) => Some((self.f)(a)), + _ => None + } + } +} + pub struct FilterIterator<'self, A, T> { priv iter: T, priv predicate: &'self fn(&A) -> bool @@ -120,21 +135,6 @@ impl<'self, A, T: Iterator> Iterator for FilterIterator<'self, A, T> { } } -pub struct MapIterator<'self, A, B, T> { - priv iter: T, - priv f: &'self fn(A) -> B -} - -impl<'self, A, B, T: Iterator> Iterator for MapIterator<'self, A, B, T> { - #[inline] - fn next(&mut self) -> Option { - match self.iter.next() { - Some(a) => Some((self.f)(a)), - _ => None - } - } -} - pub struct EnumerateIterator { priv iter: T, priv count: uint