Struct SegmentRegistry 

pub struct SegmentRegistry<'a> { /* private fields */ }

Read-only view over a segmented account’s registry.

The registry lives right after the 16-byte AccountHeader.

Implementations

impl<'a> SegmentRegistry<'a>

pub fn from_account( account_data: &'a [u8], ) -> Result<SegmentRegistry<'a>, ProgramError>

Parse a segment registry from full account data.

Expects account data starting from byte 0 (including AccountHeader).

pub fn segment_count(&self) -> usize

Number of segments in this account.

pub fn data_region_offset(&self) -> usize

Where segment data begins (after all entries).

pub fn entry(&self, index: usize) -> Result<&SegmentEntry, ProgramError>

Get a segment entry by index.

pub fn find(&self, id: &[u8; 4]) -> Result<(usize, &SegmentEntry), ProgramError>

Find a segment by its ID.

pub fn segment_data(&self, id: &[u8; 4]) -> Result<&'a [u8], ProgramError>

Get the raw data slice for a segment by ID.

pub fn segment_overlay<T>(&self, id: &[u8; 4]) -> Result<&'a T, ProgramError>

where T: Pod + FixedLayout,

Get a typed overlay for a segment by ID.

pub fn iter(&self) -> SegmentIter<'a>

Iterate over all segment entries.

pub fn registry_size(&self) -> usize

Total bytes consumed by the registry (header + all entries).

pub const fn required_account_size( header_size: usize, segment_count: usize, total_segment_data: usize, ) -> usize

Compute required account size for given segment specs.

specs is (segment_data_size,) per segment.