Struct SymbolValidityWindow 

pub struct SymbolValidityWindow {
    pub start: EpochId,
    pub end: EpochId,
}

Defines the epoch range during which a symbol is valid.

Symbols are bound to specific epoch windows. Outside this window, operations involving the symbol should fail with epoch mismatch errors.

Fields

start: EpochId

First epoch where the symbol is valid (inclusive).

end: EpochId

Last epoch where the symbol is valid (inclusive).

Implementations

impl SymbolValidityWindow

pub fn new(start: EpochId, end: EpochId) -> Self

Creates a new validity window.

Panics

Panics if end is before start.

pub fn single(epoch: EpochId) -> Self

Creates a single-epoch validity window.

pub fn infinite() -> Self

Creates an infinite validity window (all epochs).

pub fn from_epoch(start: EpochId) -> Self

Creates a window from the given epoch onward.

pub fn until_epoch(end: EpochId) -> Self

Creates a window up to and including the given epoch.

pub fn contains(&self, epoch: EpochId) -> bool

Returns true if the given epoch is within this window.

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

Returns true if this window overlaps with another.

pub fn intersection(&self, other: &Self) -> Option<Self>

Returns the intersection of two windows, if any.

pub fn span(&self) -> u64

Returns the span of this window in epochs.

Returns u64::MAX if the span would overflow (e.g., for infinite windows).

pub fn extend_to(&self, epoch: EpochId) -> Self

Extends the window to include the given epoch.

Trait Implementations

impl Clone for SymbolValidityWindow

fn clone(&self) -> SymbolValidityWindow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SymbolValidityWindow

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

Formats the value using the given formatter.

impl Default for SymbolValidityWindow

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for SymbolValidityWindow

fn eq(&self, other: &SymbolValidityWindow) -> 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 Copy for SymbolValidityWindow

impl Eq for SymbolValidityWindow

impl StructuralPartialEq for SymbolValidityWindow