pub fn link_storage_constants() -> &'static LinksConstants<u32>Expand description
The LinksConstants every LinkStorage reports.
These are the hybrid constants, the direct analogue of C#’s
LinksConstants<TLinkAddress> default for Hybrid<uint> addresses: null
is 0, internal addresses occupy the lower half of the u32 range, and the
upper half is reserved for external references.
The external half is not optional. A LinkStorage backing a names
database stores exactly the values
external_reference
produces — 0 - value, i.e. the top of the u32 range — both for named
links and for the raw character codes behind Unicode symbols. With the
internal-only constants those values fall either inside internal_range,
where
ensure_inner_reference_exists would demand a
stored link at that address, or exactly on a service constant: the external
reference of link 4 is 0u32.wrapping_sub(4), which the internal-only
constants define as any. Declaring the external range keeps every hybrid
reference outside both.