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style: Document sugar for nsStyleAutoArray.

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Emilio Cobos Álvarez 2017-01-02 03:27:27 +01:00
parent 89f3e34f48
commit 1bd246905c
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1 changed files with 9 additions and 3 deletions
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12
components/style/gecko_bindings/sugar/ns_style_auto_array.rs
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@ -2,21 +2,27 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! Rust helpers for Gecko's `nsStyleAutoArray`.
use gecko_bindings::structs::nsStyleAutoArray; use gecko_bindings::structs::nsStyleAutoArray;
use std::iter::{once, Chain, Once, IntoIterator}; use std::iter::{once, Chain, Once, IntoIterator};
use std::slice::{Iter, IterMut}; use std::slice::{Iter, IterMut};
impl<T> nsStyleAutoArray<T> { impl<T> nsStyleAutoArray<T> {
/// Mutably iterate over the array elements.
pub fn iter_mut(&mut self) -> Chain<Once<&mut T>, IterMut<T>> { pub fn iter_mut(&mut self) -> Chain<Once<&mut T>, IterMut<T>> {
once(&mut self.mFirstElement).chain(self.mOtherElements.iter_mut()) once(&mut self.mFirstElement).chain(self.mOtherElements.iter_mut())
} }
/// Iterate over the array elements.
pub fn iter(&self) -> Chain<Once<&T>, Iter<T>> { pub fn iter(&self) -> Chain<Once<&T>, Iter<T>> {
once(&self.mFirstElement).chain(self.mOtherElements.iter()) once(&self.mFirstElement).chain(self.mOtherElements.iter())
} }
// Note that often structs containing autoarrays will have /// Returns the length of the array.
// additional member fields that contain the length, which must be kept ///
// in sync /// Note that often structs containing autoarrays will have additional
/// member fields that contain the length, which must be kept in sync.
pub fn len(&self) -> usize { pub fn len(&self) -> usize {
1 + self.mOtherElements.len() 1 + self.mOtherElements.len()
} }