Reimplement `Array#shift` to be faster.
MODIFY
src/array.c
src/array.c
@@ -464,12 +464,20 @@ static mrb_value
mrb_ary_push_m(mrb_state *mrb, mrb_value self)
{
mrb_value *argv;
- mrb_int len;
+ mrb_int len, len2, alen;
+ struct RArray *a;
- mrb_get_args(mrb, "*!", &argv, &len);
- while (len--) {
- mrb_ary_push(mrb, self, *argv++);
+ mrb_get_args(mrb, "*!", &argv, &alen);
+ a = mrb_ary_ptr(self);
+ ary_modify(mrb, a);
+ len = ARY_LEN(a);
+ len2 = len + alen;
+ if (ARY_CAPA(a) < len2) {
+ ary_expand_capa(mrb, a, len2);
}
+ array_copy(ARY_PTR(a)+len, argv, alen);
+ ARY_SET_LEN(a, len2);
+ mrb_write_barrier(mrb, (struct RBasic*)a);
return self;
}

Reimplement `Array#shift` to be faster.