What is this : Attribute signaling that ref returned values, of a type that has this attribute, cannot intersect with calls to methods that also have this attribute. Motivation(s): ref returns of values that are backed by native memory (unsafe), like IComponentData in ecs chunks, can have the referenced memory invalidated by certain methods. A way is needed to detect these situations a compilation time to prevent accessing invalidated references. Notes:
- This attribute is used/feeds a Static Analyzer at compilation time.
- Attribute transfers with aggragations: struct A has this attribute, struct B has a field of type A; both A and B are concidered to have the attribute.
[AttributeUsage(AttributeTargets.Struct | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Interface)] public class DisallowRefReturnCrossingThisAttribute : Attribute, _Attribute