Function apply_attestations 

pub fn apply_attestations(base: &mut Vec<u8>, delta: &ArchivedAttestationsDiff)

Applies an attestation delta to a serialized SSZ list in place.

AttestationsDiff::Unchanged leaves the base buffer untouched.

AttestationsDiff::Append appends the serialized bytes stored in the delta to the existing buffer.

AttestationsDiff::FullReplacement clears the existing buffer and replaces it with the serialized target bytes.

Complexity

• AttestationsDiff::Unchanged: O(1).
• AttestationsDiff::Append: O(k), where k is the number of appended bytes.
• AttestationsDiff::FullReplacement: O(n), where n is the size of the replacement list.

Example

let mut base = b"AAAA".to_vec();
let delta = diff_attestations(&base, b"AAAABBBB");

let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&delta).unwrap();
let archived = unsafe { rkyv::access_unchecked::<ArchivedAttestationsDiff>(&bytes) };

apply_attestations(&mut base, archived);

assert_eq!(base, b"AAAABBBB");