Struct AttachmentData 

#[repr(C)]
pub(crate) struct AttachmentData<A: 'static> {
    vtable: &'static AttachmentVtable,
    attachment: A,
}

Type-erased attachment data structure with vtable-based dispatch.

This struct uses #[repr(C)] to enable safe field access in type-erased contexts, allowing access to the vtable field even when the concrete attachment type A is unknown.

Fields

vtable: &'static AttachmentVtable

The Vtable of this attachment

Safety

The following safety invariants are guaranteed to be upheld as long as this struct exists:

1. The vtable must always point to an AttachmentVtable created for the actual attachment type A stored below. This is true even when accessed via type-erased pointers.

attachment: A

The actual attachment data

Implementations

impl<A: 'static> AttachmentData<A>

pub(super) fn new<H: AttachmentHandler<A>>(attachment: A) -> Self

Creates a new AttachmentData with the specified handler and attachment.

This method creates the vtable for type-erased dispatch and pairs it with the attachment data.