Struct BranchNodeMasks 

pub struct BranchNodeMasks {
    pub hash_mask: TrieMask,
    pub tree_mask: TrieMask,
}

Branch node masks containing hash_mask and tree_mask.

Consolidates hash_mask and tree_mask into a single struct, reducing HashMap overhead when storing masks by path. Instead of two separate HashMap<Nibbles, TrieMask>, we use a single HashMap<Nibbles, BranchNodeMasks>.

Fields

hash_mask: TrieMask

Hash mask indicating which children are stored as hashes.

tree_mask: TrieMask

Tree mask indicating which children are complete subtrees.

Implementations

impl BranchNodeMasks

pub fn from_optional( hash_mask: Option<TrieMask>, tree_mask: Option<TrieMask>, ) -> Option<Self>

Creates masks from optional hash and tree masks.

Returns None if both masks are None, otherwise defaults missing masks to empty.

pub const fn is_empty(&self) -> bool

Returns true if both interior masks are empty.

pub const fn set_child_bits( &mut self, nibble: u8, hash_mask_bit: bool, tree_mask_bit: bool, )

Updates this set of masks for nibble based on that child’s mask bits.

Trait Implementations

impl Clone for BranchNodeMasks

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 BranchNodeMasks

impl Debug for BranchNodeMasks

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

Formats the value using the given formatter.

impl Default for BranchNodeMasks

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BranchNodeMasks

impl PartialEq for BranchNodeMasks

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BranchNodeMasks

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: 4 bytes