Struct Universe 

pub(crate) struct Universe(NonZeroU32);

A “universe” defines the set of all terms (types/permissions/etc) in a program. The root universe Universe::ROOT consists of the terms the user wrote. We create other universes synthetically to create free universal variables. For example, in a closure body, we are in a distinct universe, which allows us to define closures that can reference a (generic) type T that doesn’t exist in the parent universe.

Universes are ordered. U1 < U2 means that U2 can contain strictly more terms than U1. Universe::ROOT <= U for all U.

Tuple Fields

0: NonZeroU32

Implementations

impl Universe

pub const ROOT: Universe

The universe containing the things the user themselves wrote. ROOT <= all other universes.

pub fn next(self) -> Universe

Create a universe one larger than the current universe.

Trait Implementations

impl Clone for Universe

fn clone(&self) -> Universe

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Universe

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

Formats the value using the given formatter.

impl Hash for Universe

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 Universe

fn cmp(&self, other: &Universe) -> 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 Universe

fn eq(&self, other: &Universe) -> 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 PartialOrd for Universe

fn partial_cmp(&self, other: &Universe) -> 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 Universe

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Universe

impl Eq for Universe

impl StructuralPartialEq for Universe