Comments (2)
You could define polymorphic tree like this:
struct Data
{}
struct Node;
struct Node
{
0: nullable<Node> left;
1: nullable<Node> right;
2: bonded<Base> data;
}
You will need to serialize each node data to initialize the data
field, like in the polymorphic_container
example. You can also use generic Node<T>
, either defining the data
field as 2: bonded<T> data;
or as 2: T data;
. In the latter case you would use Node<bonded<Data>>
instance.
from bond.
Thank you, that got me unstuck. Ironically, that is much closer to the structure I am experimenting with(GumboParser) as opposed to the inheritance based model I was trying initially (conventional OO bias probably).
I have also tried the approach briefly mentioned in the 'Why Bond' article to emulate union
with nullable<>
and that works too. I still need to dig further to figure out the trade-offs in each approach.
Also, I am curious to understand when a mapping between a C and Bond model such as this one mandates the use of bonded<>
and an interim serialization, versus when it can be made blittable, possibly using transforms, but no intermediate copy.
from bond.
Related Issues (20)
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from bond.