Struct SlotPath 

pub struct SlotPath {
    pub steps: Vec<SlotIdx>,
}

Path from the root cnode through nested cnodes to a slot.

steps is the sequence of slot indices walked through nested Cap::CNode slots; the final step’s slot is the target. An empty steps is invalid (must address some slot).

Example: SlotPath { steps: vec![SlotIdx(7)] } addresses slot 7 of the root cnode. SlotPath { steps: vec![SlotIdx(7), SlotIdx(3)] } addresses slot 3 of the Cap::CNode held in root slot 7.

Fields

steps: Vec<SlotIdx>

Implementations

impl SlotPath

pub fn root(idx: SlotIdx) -> Self

Construct from a single root-cnode slot index.

pub fn new(steps: Vec<SlotIdx>) -> Result<Self, CapError>

Construct from a list of steps. Returns Err if empty.

pub fn is_root_slot(&self) -> bool

True iff this path has exactly one step (i.e., addresses a slot in the root cnode, not nested).

pub fn target(&self) -> SlotIdx

The final step (the slot index in the deepest cnode this path addresses).

pub fn prefix(&self) -> &[SlotIdx]

All steps before the target — the chain of nested-cnode indices that must be walked to reach the target’s cnode.

Trait Implementations

impl Clone for SlotPath

fn clone(&self) -> SlotPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SlotPath

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

Formats the value using the given formatter.

impl Decode for SlotPath

fn is_ssz_fixed_len() -> bool

true iff this type is fixed-length.

fn ssz_fixed_len() -> usize

Number of bytes this type occupies in the fixed-length portion of a container encoding. Variable-length types return BYTES_PER_LENGTH_OFFSET.

fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError>

Decode a full instance from bytes, rejecting trailing input.

impl Encode for SlotPath

fn is_ssz_fixed_len() -> bool

true iff this type is fixed-length (no variable-length fields).

fn ssz_fixed_len() -> usize

Number of bytes this type occupies in the fixed-length portion of a container encoding. For variable-length types this returns BYTES_PER_LENGTH_OFFSET (i.e. the size of the offset slot).

fn ssz_bytes_len(&self) -> usize

Total size of self when serialized.

fn ssz_append(&self, buf: &mut Vec<u8>)

Append the encoding of self to buf.

fn is_basic_type() -> bool

true for “basic” SSZ types (uintN, bool), which pack adjacent elements into shared 32-byte chunks for merkleization. Composite types (containers, lists, structs) return false (the default).

fn as_ssz_bytes(&self) -> Vec<u8>

Serialize into a fresh Vec<u8> allocated through the global allocator.

impl Hash for SlotPath

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl HashTreeRoot for SlotPath

fn hash_tree_root<__D: Digest<OutputSize = U32>>(&self) -> [u8; 32]

Compute the hash tree root using D as the underlying hash.

impl PartialEq for SlotPath

fn eq(&self, other: &SlotPath) -> 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 SlotPath

impl StructuralPartialEq for SlotPath