Enum UniverseLevel 

pub enum UniverseLevel {
    Zero,
    Succ(Box<UniverseLevel>),
    Max(Box<UniverseLevel>, Box<UniverseLevel>),
    Var(String),
}

A universe level expression (Lean 4 style).

Variants

Zero

Universe 0 (Prop)

Succ(Box<UniverseLevel>)

Successor of a universe

Max(Box<UniverseLevel>, Box<UniverseLevel>)

Maximum of two universes

Var(String)

A universe variable

Implementations

impl UniverseLevel

pub fn concrete(&self) -> Option<usize>

Returns the concrete level as a number, if possible.

Trait Implementations

impl Clone for UniverseLevel

fn clone(&self) -> UniverseLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UniverseLevel

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

Formats the value using the given formatter.

impl PartialEq for UniverseLevel

fn eq(&self, other: &UniverseLevel) -> 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 Eq for UniverseLevel

impl StructuralPartialEq for UniverseLevel