Enum WherePredicate

pub enum WherePredicate {
    TypeBound {
        target: TypeRefId,
        bound: TypeBound,
    },
    Lifetime {
        target: LifetimeRefId,
        bound: LifetimeRefId,
    },
    ForLifetime {
        lifetimes: ThinVec<Name>,
        target: TypeRefId,
        bound: TypeBound,
    },
}

A single predicate from a where clause, i.e. where Type: Trait. Combined where clauses like where T: Foo + Bar are turned into multiple of these. It might still result in multiple actual predicates though, because of associated type bindings like Iterator<Item = u32>.

Variants

TypeBound

Fields

target: TypeRefId

bound: TypeBound

Lifetime

Fields

target: LifetimeRefId

bound: LifetimeRefId

ForLifetime

Fields

lifetimes: ThinVec<Name>

target: TypeRefId

bound: TypeBound

Trait Implementations

impl Clone for WherePredicate

fn clone(&self) -> WherePredicate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WherePredicate

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

Formats the value using the given formatter.

impl Hash for WherePredicate

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 WherePredicate

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

impl StructuralPartialEq for WherePredicate