Struct Step 

pub struct Step {
    pub name: Vec<u8>,
    pub mode: EntryMode,
    pub child_id: Hash,
    pub inner_root: Hash,
    pub position: u32,
    pub proof: Proof,
}

One authenticated hop of a path: the entry name/mode proven at position under its parent (a commit’s tree_hash, or the previous step’s child_id), via a single-leaf Proof.

This is both the in-memory type verify_path takes and the wire representation inside a disclosure bundle (§ module docs) — there is no separate internal wire struct to keep in sync.

Fields

name: Vec<u8>

The entry’s name (1..=255 bytes; SPEC-OBJECTS §4.1 rules apply).

mode: EntryMode

The entry’s mode.

child_id: Hash

The entry’s child object id.

inner_root: Hash

Bare BMT root of the parent Tree this step’s proof is verified against (the tree whose id is the commit’s tree_hash for step 0, or the previous step’s child_id). Wrap-checked against that id before use; never a second trust anchor.

position: u32

The entry’s BMT position (= index) within its parent Tree.

proof: Proof

Single-leaf inclusion proof (max_items = 1) that (name, mode, child_id) is the entry at position in the parent tree.

Trait Implementations

impl Clone for Step

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Step

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

Formats the value using the given formatter.

impl EncodeSize for Step

fn encode_size(&self) -> usize

Returns the encoded size of this value (in bytes).

fn encode_inline_size(&self) -> usize

Returns the encoded size excluding bytes passed to BufsMut::push during Write::write_bufs. Used to size the working buffer for inline writes. Override alongside Write::write_bufs for types where large Bytes fields go via push; failing to do so will over-allocate.

impl Eq for Step

impl PartialEq for Step

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

Equality operator ==.

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

Inequality operator !=.

impl Read for Step

type Cfg = ()

The Cfg type parameter allows passing configuration during the read process. This is crucial for safely decoding untrusted data, for example, by providing size limits for collections or strings.

fn read_cfg(reader: &mut impl Buf, (): &Self::Cfg) -> Result<Self, CodecError>

Reads a value from the buffer using the provided configuration cfg.

impl StructuralPartialEq for Step

impl Write for Step

fn write(&self, writer: &mut impl BufMut)

Writes the binary representation of self to the provided buffer buf.

fn write_bufs(&self, buf: &mut impl BufsMut)

Writes to a BufsMut, allowing existing Bytes chunks to be appended via BufsMut::push instead of written inline. Must encode to the same format as Write::write. Defaults to Write::write.