Struct BTreeNodeHeader 

#[non_exhaustive]
pub struct BTreeNodeHeader {
    pub flags: u16,
    pub level: u16,
    pub nkeys: u32,
}

A parsed B-tree node header.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

flags: u16

btn_flags.

level: u16

btn_level (0 = leaf).

nkeys: u32

btn_nkeys.

Implementations

impl BTreeNodeHeader

pub fn is_leaf(&self) -> bool

Whether this node is a leaf (BTNODE_LEAF set, or btn_level == 0).

pub fn is_root(&self) -> bool

Whether this node is the B-tree root (BTNODE_ROOT).

pub fn is_fixed_kv(&self) -> bool

Whether entries are fixed-size (BTNODE_FIXED_KV_SIZE).

Trait Implementations

impl Clone for BTreeNodeHeader

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BTreeNodeHeader

impl Debug for BTreeNodeHeader

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

Formats the value using the given formatter.