You need to avoid the `ref` if you need to avoid the indirection, but apart
from that it's IMO an idiomatic API.
type
BarObj = object
data: Foo
refcount: ptr int
proc `=destroy`(bar: var BarObj) =
if bar.refcount[] == 0:
freeFoo(bar.data)
dealloc bar.refcount
else:
dec bar.refcount[]
proc `=copy`(dest: var BarObj; src: BarObj) =
inc src.refcount[]
`=destroy`(dest)
dest.data = src.data
dest.refcount = src.refcount
proc newBar(): BarObj =
result = BarObj(data: newFoo(), refcount: cast[ptr
int](alloc0(sizeof(int)))
Run
unless Foo already offers a refcount, you need to add one yourself and it needs
a pointer indirection.
