Enum ConstValue 

pub enum ConstValue<I: Interner> {
    BoundVar(BoundVar),
    InferenceVar(InferenceVar),
    Placeholder(PlaceholderIndex),
    Concrete(ConcreteConst<I>),
}

A constant value, not necessarily concrete.

Variants

BoundVar(BoundVar)

Bound var (e.g. a parameter).

InferenceVar(InferenceVar)

Constant whose value is being inferred.

Placeholder(PlaceholderIndex)

Lifetime on some yet-unknown placeholder.

Concrete(ConcreteConst<I>)

Concrete constant value.

Trait Implementations

impl<I: Clone + Interner> Clone for ConstValue<I>

fn clone(&self) -> ConstValue<I>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: Interner> HasInterner for ConstValue<I>

type Interner = I

The interner associated with the type.

impl<I: Hash + Interner> Hash for ConstValue<I>

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<I: PartialEq + Interner> PartialEq for ConstValue<I>

fn eq(&self, other: &ConstValue<I>) -> 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<I: Interner> Copy for ConstValue<I>

where I::InternedConcreteConst: Copy,

impl<I: Eq + Interner> Eq for ConstValue<I>

impl<I: Interner> StructuralPartialEq for ConstValue<I>