Struct OperationContext 

pub struct OperationContext { /* private fields */ }

Immutable environment captured at the start of one operation.

Implementations

impl OperationContext

pub const fn unix_millis(&self) -> i64

pub const fn clock_source(&self) -> RuntimeValueSource

pub const fn today_local(&self) -> CivilDate

pub const fn today_is_fixed(&self) -> bool

pub fn local_time_zone(&self) -> &LocalTimeZone

pub const fn seed(&self) -> u64

pub const fn random_source(&self) -> RuntimeValueSource

pub fn timing(&self) -> Option<OperationTiming>

pub fn require_timing( &self, ) -> Result<OperationTiming, OperationTimingUnavailable>

pub fn derive_u64(&self, domain: &str, ordinal: u64) -> u64

Derives a stable value from this operation’s random key without sharing mutable PRNG state.

Callers must use a durable, owner-qualified domain such as block.generated-id. The ordinal is local to that domain, so adding random consumers in another family cannot shift existing output.

pub fn derive_nonzero_u64(&self, domain: &str, ordinal: u64) -> NonZeroU64

pub fn derive_hex(&self, domain: &str, ordinal: u64, len: usize) -> String

Trait Implementations

impl Clone for OperationContext

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 OperationContext

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

Formats the value using the given formatter.

impl Eq for OperationContext

impl PartialEq for OperationContext

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for OperationContext