Enum rustc_hir::WherePredicate

pub enum WherePredicate<'hir> {
    BoundPredicate(WhereBoundPredicate<'hir>),
    RegionPredicate(WhereRegionPredicate<'hir>),
    EqPredicate(WhereEqPredicate<'hir>),
}

A single predicate in a where-clause.

Variants

BoundPredicate(WhereBoundPredicate<'hir>)

A type binding (e.g., for<'c> Foo: Send + Clone + 'c).

RegionPredicate(WhereRegionPredicate<'hir>)

A lifetime predicate (e.g., 'a: 'b + 'c).

EqPredicate(WhereEqPredicate<'hir>)

An equality predicate (unsupported).

Implementations

impl<'hir> WherePredicate<'hir>

pub fn span(&self) -> Span

pub fn in_where_clause(&self) -> bool

pub fn bounds(&self) -> GenericBounds<'hir>

Trait Implementations

impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for WherePredicate<'tcx>

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self

fn allocate_from_iter<'a>(
    arena: &'a Arena<'tcx>,
    iter: impl IntoIterator<Item = Self>
) -> &'a mut [Self]

impl<'hir> Debug for WherePredicate<'hir>

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

Formats the value using the given formatter.

impl<'hir, __CTX> HashStable<__CTX> for WherePredicate<'hir>where
    __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 64 bytes

Size for each variant:

• BoundPredicate: 64 bytes
• RegionPredicate: 40 bytes
• EqPredicate: 24 bytes