pub 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>>,
}

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§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>>

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impl<'a, 'tcx> ConstraintContext<'a, 'tcx>

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fn tcx(&self) -> TyCtxt<'tcx>

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fn build_constraints_for_item(&mut self, def_id: LocalDefId)

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fn add_constraint( &mut self, current: &CurrentItem, index: u32, variance: &'a VarianceTerm<'a> )

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fn contravariant( &mut self, variance: &'a VarianceTerm<'a> ) -> &'a VarianceTerm<'a>

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fn invariant(&mut self, variance: &'a VarianceTerm<'a>) -> &'a VarianceTerm<'a>

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fn constant_term(&self, v: Variance) -> &'a VarianceTerm<'a>

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fn xform( &mut self, v1: &'a VarianceTerm<'a>, v2: &'a VarianceTerm<'a> ) -> &'a VarianceTerm<'a>

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fn add_constraints_from_invariant_args( &mut self, current: &CurrentItem, args: GenericArgsRef<'tcx>, variance: &'a VarianceTerm<'a> )

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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

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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

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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

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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

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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

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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§

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impl<'a, 'tcx> !RefUnwindSafe for ConstraintContext<'a, 'tcx>

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impl<'a, 'tcx> !Send for ConstraintContext<'a, 'tcx>

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impl<'a, 'tcx> !Sync for ConstraintContext<'a, 'tcx>

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impl<'a, 'tcx> Unpin for ConstraintContext<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for ConstraintContext<'a, 'tcx>

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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