Struct Bounds

pub(crate) struct Bounds<'tcx> {
    clauses: Vec<(Clause<'tcx>, Span)>,
}

Collects together a list of type bounds. These lists of bounds occur in many places in Rust’s syntax:

trait Foo: Bar + Baz { }
           ^^^^^^^^^ supertrait list bounding the `Self` type parameter

fn foo<T: Bar + Baz>() { }
          ^^^^^^^^^ bounding the type parameter `T`

impl dyn Bar + Baz
         ^^^^^^^^^ bounding the type-erased dynamic type

Our representation is a bit mixed here – in some cases, we include the self type (e.g., trait_bounds) but in others we do not

Fields

clauses: Vec<(Clause<'tcx>, Span)>

Implementations

impl<'tcx> Bounds<'tcx>

pub(crate) fn push_region_bound( &mut self, tcx: TyCtxt<'tcx>, region: PolyTypeOutlivesPredicate<'tcx>, span: Span, )

pub(crate) fn push_trait_bound( &mut self, tcx: TyCtxt<'tcx>, bound_trait_ref: PolyTraitRef<'tcx>, span: Span, polarity: PredicatePolarity, )

pub(crate) fn push_projection_bound( &mut self, tcx: TyCtxt<'tcx>, projection: PolyProjectionPredicate<'tcx>, span: Span, )

pub(crate) fn push_sized(&mut self, tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, span: Span)

pub(crate) fn push_const_bound( &mut self, tcx: TyCtxt<'tcx>, bound_trait_ref: PolyTraitRef<'tcx>, constness: BoundConstness, span: Span, )

Push a const or ~const bound as a HostEffect predicate.

pub(crate) fn clauses(&self) -> impl Iterator<Item = (Clause<'tcx>, Span)> + '_

Trait Implementations

impl<'tcx> Clone for Bounds<'tcx>

fn clone(&self) -> Bounds<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for Bounds<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> Default for Bounds<'tcx>

fn default() -> Bounds<'tcx>

Returns the “default value” for a type.

impl<'tcx> PartialEq for Bounds<'tcx>

fn eq(&self, other: &Bounds<'tcx>) -> 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<'tcx> Eq for Bounds<'tcx>

impl<'tcx> StructuralPartialEq for Bounds<'tcx>

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: 24 bytes