Struct SlotIndex 

pub struct SlotIndex {
    pub starting_slot: u64,
    pub offsets: Vec<i64>,
}

SlotIndex records store offsets to data at specific slots from the beginning of the index record to the beginning of the corresponding data.

Format: starting-slot | index | index | index ... | count

See also https://github.com/status-im/nimbus-eth2/blob/stable/docs/e2store.md#slotindex.

Fields

starting_slot: u64

Starting slot number

offsets: Vec<i64>

Offsets to data at each slot 0 indicates no data for that slot

Implementations

impl SlotIndex

pub const fn new(starting_slot: u64, offsets: Vec<i64>) -> Self

Create a new slot index

pub const fn slot_count(&self) -> usize

Get the number of slots covered by this index

pub fn get_offset(&self, slot_index: usize) -> Option<i64>

Get the offset for a specific slot

pub fn has_data_at_slot(&self, slot_index: usize) -> bool

Check if a slot has data - non-zero offset

Trait Implementations

impl Clone for SlotIndex

fn clone(&self) -> SlotIndex

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SlotIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl IndexEntry for SlotIndex

fn new(starting_number: u64, offsets: Vec<i64>) -> Self

Create a new instance with starting number and offsets

fn entry_type() -> [u8; 2]

Get the entry type identifier for this index

fn starting_number(&self) -> u64

Get the starting number - can be starting slot or block number for example

fn offsets(&self) -> &[i64]

Get the offsets vector

fn to_entry(&self) -> Entry

Convert to an Entry for storage in an e2store file Format: starting-number | offset1 | offset2 | … | count

fn from_entry(entry: &Entry) -> Result<Self, E2sError>

Create from an Entry

impl PartialEq for SlotIndex

fn eq(&self, other: &SlotIndex) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SlotIndex

impl StructuralPartialEq for SlotIndex

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes