Struct rustc_hir_analysis::variance::constraints::ConstraintContext
source · pub(crate) struct ConstraintContext<'a, 'tcx> {
pub terms_cx: TermsContext<'a, 'tcx>,
covariant: &'a VarianceTerm<'a>,
contravariant: &'a VarianceTerm<'a>,
invariant: &'a VarianceTerm<'a>,
bivariant: &'a VarianceTerm<'a>,
pub constraints: Vec<Constraint<'a>>,
}
Fields§
§terms_cx: TermsContext<'a, 'tcx>
§covariant: &'a VarianceTerm<'a>
§contravariant: &'a VarianceTerm<'a>
§invariant: &'a VarianceTerm<'a>
§bivariant: &'a VarianceTerm<'a>
§constraints: Vec<Constraint<'a>>
Implementations§
source§impl<'a, 'tcx> ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> ConstraintContext<'a, 'tcx>
fn tcx(&self) -> TyCtxt<'tcx>
fn build_constraints_for_item(&mut self, def_id: LocalDefId)
fn add_constraint( &mut self, current: &CurrentItem, index: u32, variance: &'a VarianceTerm<'a>, )
fn contravariant( &mut self, variance: &'a VarianceTerm<'a>, ) -> &'a VarianceTerm<'a>
fn invariant(&mut self, variance: &'a VarianceTerm<'a>) -> &'a VarianceTerm<'a>
fn constant_term(&self, v: Variance) -> &'a VarianceTerm<'a>
fn xform( &mut self, v1: &'a VarianceTerm<'a>, v2: &'a VarianceTerm<'a>, ) -> &'a VarianceTerm<'a>
fn add_constraints_from_invariant_args( &mut self, current: &CurrentItem, args: GenericArgsRef<'tcx>, variance: &'a VarianceTerm<'a>, )
sourcefn add_constraints_from_ty(
&mut self,
current: &CurrentItem,
ty: Ty<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_ty( &mut self, current: &CurrentItem, ty: Ty<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for an instance of ty
appearing
in a context with the generics defined in generics
and
ambient variance variance
sourcefn add_constraints_from_args(
&mut self,
current: &CurrentItem,
def_id: DefId,
args: GenericArgsRef<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_args( &mut self, current: &CurrentItem, def_id: DefId, args: GenericArgsRef<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for a nominal type (enum, struct,
object, etc) appearing in a context with ambient variance variance
sourcefn add_constraints_from_const(
&mut self,
current: &CurrentItem,
c: Const<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_const( &mut self, current: &CurrentItem, c: Const<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for a const expression val
in a context with ambient variance variance
sourcefn add_constraints_from_sig(
&mut self,
current: &CurrentItem,
sig: PolyFnSig<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_sig( &mut self, current: &CurrentItem, sig: PolyFnSig<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for a function with signature
sig
appearing in a context with ambient variance variance
sourcefn add_constraints_from_region(
&mut self,
current: &CurrentItem,
region: Region<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_region( &mut self, current: &CurrentItem, region: Region<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for a region appearing in a
context with ambient variance variance
sourcefn add_constraints_from_mt(
&mut self,
current: &CurrentItem,
mt: &TypeAndMut<'tcx>,
variance: &'a VarianceTerm<'a>,
)
fn add_constraints_from_mt( &mut self, current: &CurrentItem, mt: &TypeAndMut<'tcx>, variance: &'a VarianceTerm<'a>, )
Adds constraints appropriate for a mutability-type pair
appearing in a context with ambient variance variance
Auto Trait Implementations§
impl<'a, 'tcx> Freeze for ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> !RefUnwindSafe for ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> !Send for ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> !Sync for ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> Unpin for ConstraintContext<'a, 'tcx>
impl<'a, 'tcx> !UnwindSafe for ConstraintContext<'a, 'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
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impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
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impl<T> IntoEither for T
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fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
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self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
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impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
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impl<T> MaybeResult<T> for T
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source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
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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: 152 bytes