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Add some mutable variants of vector functions to the standard library

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This commit is contained in:
Patrick Walton 2011-03-18 13:53:49 -07:00
parent 8b82a549bf
commit 368eb4bab6
2 changed files with 31 additions and 0 deletions
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25
src/lib/_vec.rs
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@ -20,6 +20,7 @@ native "rust" mod rustrt {
* want to invoke this as vec_alloc[vec[U], U].
*/
fn vec_alloc[T, U](uint n_elts) -> vec[U];
fn vec_alloc_mut[T, U](uint n_elts) -> vec[mutable U];
fn refcount[T](vec[T] v) -> uint;
@ -30,6 +31,10 @@ fn alloc[T](uint n_elts) -> vec[T] {
ret rustrt.vec_alloc[vec[T], T](n_elts);
}
fn alloc_mut[T](uint n_elts) -> vec[mutable T] {
ret rustrt.vec_alloc_mut[vec[mutable T], T](n_elts);
}
fn refcount[T](vec[T] v) -> uint {
auto r = rustrt.refcount[T](v);
if (r == dbg.const_refcount) {
@ -52,6 +57,16 @@ fn init_fn[T](&init_op[T] op, uint n_elts) -> vec[T] {
ret v;
}
fn init_fn_mut[T](&init_op[T] op, uint n_elts) -> vec[mutable T] {
let vec[mutable T] v = alloc_mut[T](n_elts);
let uint i = 0u;
while (i < n_elts) {
v += vec(mutable op(i));
i += 1u;
}
ret v;
}
fn init_elt[T](&T t, uint n_elts) -> vec[T] {
/**
* FIXME (issue #81): should be:
@ -69,6 +84,16 @@ fn init_elt[T](&T t, uint n_elts) -> vec[T] {
ret v;
}
fn init_elt_mut[T](&T t, uint n_elts) -> vec[mutable T] {
let vec[mutable T] v = alloc_mut[T](n_elts);
let uint i = n_elts;
while (i > 0u) {
i -= 1u;
v += vec(mutable t);
}
ret v;
}
fn buf[T](vec[T] v) -> vbuf {
ret rustrt.vec_buf[T](v, 0u);
}