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Add method Vec<T>::as_mut_ptr()

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This commit is contained in:
Cadence Marseille 2014-03-16 17:20:44 -04:00
parent 7156ded5bc
commit 5db7f7ed24
1 changed files with 7 additions and 4 deletions
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11
src/libstd/vec_ng.rs
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@ -415,8 +415,7 @@ impl<T> Vec<T> {
unsafe { // infallible
// The spot to put the new value
{
let slice = self.as_mut_slice();
let p = slice.as_mut_ptr().offset(index as int);
let p = self.as_mut_ptr().offset(index as int);
// Shift everything over to make space. (Duplicating the
// `index`th element into two consecutive places.)
ptr::copy_memory(p.offset(1), &*p, len - index);
@ -434,9 +433,8 @@ impl<T> Vec<T> {
unsafe { // infallible
let ret;
{
let slice = self.as_mut_slice();
// the place we are taking from.
let ptr = slice.as_mut_ptr().offset(index as int);
let ptr = self.as_mut_ptr().offset(index as int);
// copy it out, unsafely having a copy of the value on
// the stack and in the vector at the same time.
ret = Some(ptr::read(ptr as *T));
@ -499,6 +497,11 @@ impl<T> Vec<T> {
pub fn as_ptr(&self) -> *T {
self.as_slice().as_ptr()
}
#[inline]
pub fn as_mut_ptr(&mut self) -> *mut T {
self.as_mut_slice().as_mut_ptr()
}
}
impl<T> Mutable for Vec<T> {