Enum Level 

pub enum Level {
    Zero,
    Const(u32),
    Param(u32),
    Succ(LevelId),
    Max(LevelId, LevelId),
    IMax(LevelId, LevelId),
}

Universe level expressions

Variants

Zero

Zero level (Type 0 = Prop in Lean 4)

Const(u32)

Concrete level n (Type n)

Param(u32)

Level parameter (polymorphic universe variable)

Succ(LevelId)

Successor level (u + 1)

Max(LevelId, LevelId)

Maximum of two levels

IMax(LevelId, LevelId)

Impredicative maximum (like max but Type imax 0 u = Type 0)

Implementations

impl Level

pub fn is_zero(&self) -> bool

Check if this is the zero level

pub fn is_const(&self) -> bool

Check if this is a concrete constant

pub fn from_u32(n: u32) -> Self

Create a concrete level

Trait Implementations

impl Clone for Level

fn clone(&self) -> Level

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Level

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

Formats the value using the given formatter.

impl Display for Level

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

Formats the value using the given formatter.

impl Hash for Level

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 PartialEq for Level

fn eq(&self, other: &Level) -> 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 Level

impl StructuralPartialEq for Level