Struct rustc::traits::DerivedObligationCause

pub struct DerivedObligationCause<'tcx> {
    parent_trait_ref: PolyTraitRef<'tcx>,
    parent_code: Rc<ObligationCauseCode<'tcx>>,
}

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

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Fields

parent_trait_ref: PolyTraitRef<'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?

The trait reference of the parent obligation that led to the current obligation. Note that only trait obligations lead to derived obligations, so we just store the trait reference here directly.

parent_code: Rc<ObligationCauseCode<'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?

The parent trait had this cause

Trait Implementations

impl<'a, 'tcx> Lift<'tcx> for DerivedObligationCause<'a>

type Lifted = DerivedObligationCause<'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?

fn lift_to_tcx<'b, 'gcx>(     &self,     tcx: TyCtxt<'b, 'gcx, 'tcx> ) -> Option<Self::Lifted>

🔬 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?

impl<'tcx> Clone for DerivedObligationCause<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for DerivedObligationCause<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> PartialEq for DerivedObligationCause<'tcx>

fn eq(&self, other: &DerivedObligationCause<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &DerivedObligationCause<'tcx>) -> bool

This method tests for !=.

impl<'tcx> Eq for DerivedObligationCause<'tcx>

fn assert_receiver_is_total_eq(&self)

impl<'tcx> Hash for DerivedObligationCause<'tcx>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].