Struct InteractionPattern 

pub struct InteractionPattern { /* private fields */ }

A complete, validated transcript described as a sequence of typed steps.

Implementations

impl InteractionPattern

pub fn new(interactions: Vec<Interaction>) -> Result<Self, TranscriptError>

Build a pattern from a sequence of steps after validating its structure.

Errors

Returns a structured error when the sequence is malformed; See the variants of the error type for the exact failure modes.

Algorithm

Walks the sequence once, maintaining a stack of currently-open sub-protocols.

pub fn interactions(&self) -> &[Interaction]

Read-only access to the recorded sequence.

pub const fn len(&self) -> usize

Number of steps in the pattern.

pub const fn is_empty(&self) -> bool

Whether the pattern has zero steps.

pub fn pattern_hash(&self) -> [u8; 32]

Stable 32-byte fingerprint of the pattern.

Algorithm

1. Render the pattern via alternate-mode Display.
2. Feed the rendered bytes into Keccak-256.

The rendering is type-name-free and length-prefixed, so the digest is stable across compiler versions and free of label collision shenanigans.

Performance

One allocation for the rendered string and one Keccak-256 call. Intended for use at protocol setup, not in hot paths.

Trait Implementations

impl Clone for InteractionPattern

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 InteractionPattern

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

Formats the value using the given formatter.

impl Default for InteractionPattern

fn default() -> Self

Returns the “default value” for a type.

impl Display for InteractionPattern

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

Formats the value using the given formatter.

impl Eq for InteractionPattern

impl Hash for InteractionPattern

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 Ord for InteractionPattern

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for InteractionPattern

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for InteractionPattern

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for InteractionPattern