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ChildElementIterator is now peekable

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This commit is contained in:
Bruno de Oliveira Abinader 2014-10-31 10:52:39 -04:00
parent eb1ef59aee
commit 11d2251b1e
1 changed files with 9 additions and 13 deletions
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22
components/script/dom/node.rs
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@ -59,7 +59,7 @@ use libc;
use libc::{uintptr_t, c_void};
use std::cell::{Cell, RefCell, Ref, RefMut};
use std::default::Default;
use std::iter::{Map, Filter};
use std::iter::{Map, Filter, Peekable};
use std::mem;
use style;
use style::ComputedValues;
@ -784,6 +784,7 @@ impl<'a> NodeHelpers<'a> for JSRef<'a, Node> {
let elem: JSRef<Element> = ElementCast::to_ref(node).unwrap();
elem.clone()
})
.peekable()
}
fn wait_until_safe_to_modify_dom(self) {
@ -966,9 +967,10 @@ impl RawLayoutNodeHelpers for Node {
// Iteration and traversal
//
pub type ChildElementIterator<'a> = Map<'a, JSRef<'a, Node>,
JSRef<'a, Element>,
Filter<'a, JSRef<'a, Node>, NodeChildrenIterator<'a>>>;
pub type ChildElementIterator<'a> = Peekable<JSRef<'a, Element>,
Map<'a, JSRef<'a, Node>,
JSRef<'a, Element>,
Filter<'a, JSRef<'a, Node>, NodeChildrenIterator<'a>>>>;
pub struct NodeChildrenIterator<'a> {
current: Option<JSRef<'a, Node>>,
@ -1258,9 +1260,7 @@ impl Node {
0 => (),
// Step 6.1.2
1 => {
// FIXME: change to empty() when https://github.com/mozilla/rust/issues/11218
// will be fixed
if parent.child_elements().count() > 0 {
if parent.child_elements().peek().is_some() {
return Err(HierarchyRequest);
}
match child {
@ -1279,9 +1279,7 @@ impl Node {
},
// Step 6.2
ElementNodeTypeId(_) => {
// FIXME: change to empty() when https://github.com/mozilla/rust/issues/11218
// will be fixed
if parent.child_elements().count() > 0 {
if parent.child_elements().peek().is_some() {
return Err(HierarchyRequest);
}
match child {
@ -1308,9 +1306,7 @@ impl Node {
}
},
None => {
// FIXME: change to empty() when https://github.com/mozilla/rust/issues/11218
// will be fixed
if parent.child_elements().count() > 0 {
if parent.child_elements().peek().is_some() {
return Err(HierarchyRequest);
}
},