Populate tree.

1 files changed, 30 insertions, 0 deletions

diff --git a/src/lib/_vec.rs b/src/lib/_vec.rs
new file mode 100644
index 00000000..c938e6fb
--- /dev/null
+++ b/src/lib/_vec.rs
@@ -0,0 +1,30 @@
+import vbuf = rustrt.vbuf;
+
+native "rust" mod rustrt {
+  type vbuf;
+  fn vec_buf[T](vec[T] v) -> vbuf;
+  fn vec_len[T](vec[T] v) -> uint;
+  fn vec_alloc[T](int n_elts) -> vec[T];
+}
+
+fn alloc[T](int n_elts) -> vec[T] {
+  ret rustrt.vec_alloc[T](n_elts);
+}
+
+fn init[T](&T t, int n_elts) -> vec[T] {
+  let vec[T] v = alloc[T](n_elts);
+  let int i = n_elts;
+  while (i > 0) {
+    i -= 1;
+    v += vec(t);
+  }
+  ret v;
+}
+
+fn len[T](vec[T] v) -> uint {
+  ret rustrt.vec_len[T](v);
+}
+
+fn buf[T](vec[T] v) -> vbuf {
+  ret rustrt.vec_buf[T](v);
+}