Struct DefinitionId 

pub struct DefinitionId(pub u64);

Stable identity of a session definition — the durable, project-stable identity of a latent shape.

Unlike InstanceId (a spawn-unique daemon handle that changes every restart), a DefinitionId is the SAME across daemon restarts and across hosts: its inner u64 IS the ishou_tokens stable_seed of the project root — the very seed praça’s name derivation uses — so a definition keeps its identity, and therefore its display name, forever.

The whole point of the type is that a fn taking a DefinitionId cannot be handed an InstanceId: confusing the durable identity of a definition with the ephemeral handle of a running instance is a compile error (E0308), not a runtime mix-up.

Tuple Fields

0: u64

Implementations

impl DefinitionId

pub const NULL: Self

The reserved “null” id — 0. Distinct from any from_seed() output because BLAKE3 never produces an all-zero hash on a non-empty input.

pub fn from_seed(seed: &str) -> Self

Mint a fresh ID from a seed string (commonly the creation timestamp + parent + counter). Truncates the BLAKE3 hash to 8 bytes — collision risk is negligible for the session-scale population.

impl DefinitionId

pub fn from_project(root: &Path) -> Self

The definition id for a project root. Equal to the project’s name_seed by construction — inner == stable_seed(root), the exact derivation praça’s SessionRecord uses — so a definition’s identity and its display name share one seed and migration from the old records is lossless.

Trait Implementations

impl Clone for DefinitionId

fn clone(&self) -> DefinitionId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DefinitionId

impl Debug for DefinitionId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DefinitionId

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for DefinitionId

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

Formats the value using the given formatter.

impl Eq for DefinitionId

impl FromStr for DefinitionId

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for DefinitionId

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 DefinitionId

fn cmp(&self, other: &DefinitionId) -> 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.

impl PartialEq for DefinitionId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for DefinitionId

fn partial_cmp(&self, other: &DefinitionId) -> 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 Serialize for DefinitionId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DefinitionId