Enum KeyBlockLayout 

pub enum KeyBlockLayout {
    HashThenKey,
    KeyOnly,
}

Whether a key block stores a hash per entry, and therefore what order its entries are in.

Variants

HashThenKey

8-byte hash stored ahead of each key; entries sorted by (hash, key).

KeyOnly

No hash stored; entries sorted by key.

Implementations

impl KeyBlockLayout

pub fn hash_len(self) -> u8

Bytes each entry spends on its stored hash: 8, or 0 when the hash is omitted.

pub fn block_type(self, fixed: bool) -> u8

The on-disk block type byte for this layout, for fixed-size or variable-size entries.

pub fn from_block_type(block_type: u8) -> Option<(Self, bool)>

Decodes a key block’s type byte into its layout, plus whether entries are fixed-size. Returns None for a byte that is not a key block type.

Trait Implementations

impl Clone for KeyBlockLayout

fn clone(&self) -> KeyBlockLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for KeyBlockLayout

impl Debug for KeyBlockLayout

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

Formats the value using the given formatter.

impl Eq for KeyBlockLayout

impl PartialEq for KeyBlockLayout

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for KeyBlockLayout