Enum rustc_hir::GenericBound

pub enum GenericBound<'hir> {
    Trait(PolyTraitRef<'hir>, TraitBoundModifier),
    LangItemTrait(LangItem, Span, HirId, &'hir GenericArgs<'hir>),
    Outlives(&'hir Lifetime),
}

The AST represents all type param bounds as types. typeck::collect::compute_bounds matches these against the “special” built-in traits (see middle::lang_items) and detects Copy, Send and Sync.

Variants

Trait(PolyTraitRef<'hir>, TraitBoundModifier)

LangItemTrait(LangItem, Span, HirId, &'hir GenericArgs<'hir>)

Outlives(&'hir Lifetime)

Implementations

impl GenericBound<'_>

pub fn trait_ref(&self) -> Option<&TraitRef<'_>>

pub fn span(&self) -> Span

Trait Implementations

impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for GenericBound<'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> Clone for GenericBound<'hir>

fn clone(&self) -> GenericBound<'hir>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'hir> Debug for GenericBound<'hir>

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

Formats the value using the given formatter.

impl<'hir, __CTX> HashStable<__CTX> for GenericBound<'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: 48 bytes

Size for each variant:

• Trait: 47 bytes
• LangItemTrait: 31 bytes
• Outlives: 15 bytes