fix arena

1 files changed, 9 insertions, 2 deletions

diff --git a/src/vec.hff b/src/vec.hff
index be29fec..35a9331 100644
--- a/src/vec.hff
+++ b/src/vec.hff
@@ -22,8 +22,7 @@ struct Vec<T> {
 
    fn clear(vec *Vec) void {
       free(vec.dat);
-      vec.len = 0;
-      vec.cap = 0; 
+      *vec = {};
    }
 
    fn compact(vec *Vec) [#]T {
@@ -34,6 +33,14 @@ struct Vec<T> {
       return vec.dat[0::vec.len];
    }
 
+   fn move(vec *Vec, alloc *Allocator) [#]T {
+      let len = vec.len;
+      let dat *T = alloc->alloc(len * sizeof T);
+      memcpy(dat, vec.dat, len * sizeof T);
+      vec->clear();
+      return dat[0::len];
+   }
+
    fn last(vec *const Vec) T { return vec.dat[vec.len - 1]; }
 
    fn lastp(vec *Vec) *T { return &vec.dat[vec.len - 1]; }