Struct rustc::ty::wf::WfPredicates

struct WfPredicates<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> {
    infcx: &'a InferCtxt<'a, 'gcx, 'tcx>,
    param_env: ParamEnv<'tcx>,
    body_id: NodeId,
    span: Span,
    out: Vec<PredicateObligation<'tcx>>,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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Fields

infcx: &'a InferCtxt<'a, 'gcx, 'tcx>

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param_env: ParamEnv<'tcx>

🔬 This is a nightly-only experimental API. (rustc_private)

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body_id: NodeId

🔬 This is a nightly-only experimental API. (rustc_private)

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span: Span

🔬 This is a nightly-only experimental API. (rustc_private)

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out: Vec<PredicateObligation<'tcx>>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Methods

impl<'a, 'gcx, 'tcx> WfPredicates<'a, 'gcx, 'tcx>

fn cause(&mut self, code: ObligationCauseCode<'tcx>) -> ObligationCause<'tcx>

🔬 This is a nightly-only experimental API. (rustc_private)

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Important traits for Vec<u8>

impl Write for Vec<u8>

fn normalize(&mut self) -> Vec<PredicateObligation<'tcx>>

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fn compute_trait_ref(     &mut self,     trait_ref: &TraitRef<'tcx>,     elaborate: Elaborate )

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Pushes the obligations required for trait_ref to be WF into self.out.

fn compute_projection(&mut self, data: ProjectionTy<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

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Pushes the obligations required for trait_ref::Item to be WF into self.out.

fn compute_const(&mut self, constant: &'tcx Const<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

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Pushes the obligations required for a constant value to be WF into self.out.

fn require_sized(&mut self, subty: Ty<'tcx>, cause: ObligationCauseCode<'tcx>)

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fn compute(&mut self, ty0: Ty<'tcx>) -> bool

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Push new obligations into out. Returns true if it was able to generate all the predicates needed to validate that ty0 is WF. Returns false if ty0 is an unresolved type variable, in which case we are not able to simplify at all.

Important traits for Vec<u8>

impl Write for Vec<u8>

fn nominal_obligations(     &mut self,     def_id: DefId,     substs: &Substs<'tcx> ) -> Vec<PredicateObligation<'tcx>>

🔬 This is a nightly-only experimental API. (rustc_private)

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fn from_object_ty(     &mut self,     ty: Ty<'tcx>,     data: Binder<&'tcx Slice<ExistentialPredicate<'tcx>>>,     region: Region<'tcx> )

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?