Trait rustc_trait_selection::traits::error_reporting::InferCtxtPrivExt[−][src]

trait InferCtxtPrivExt<'tcx> {
    fn error_implies(
        &self, 
        cond: Predicate<'tcx>, 
        error: Predicate<'tcx>
    ) -> bool;

    fn report_fulfillment_error(
        &self, 
        error: &FulfillmentError<'tcx>, 
        body_id: Option<BodyId>, 
        fallback_has_occurred: bool
    );

    fn report_projection_error(
        &self, 
        obligation: &PredicateObligation<'tcx>, 
        error: &MismatchedProjectionTypes<'tcx>
    );

    fn fuzzy_match_tys(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> bool;

    fn describe_generator(&self, body_id: BodyId) -> Option<&'static str>;

    fn find_similar_impl_candidates(
        &self, 
        trait_ref: PolyTraitRef<'tcx>
    ) -> Vec<TraitRef<'tcx>>;

    fn report_similar_impl_candidates(
        &self, 
        impl_candidates: Vec<TraitRef<'tcx>>, 
        err: &mut DiagnosticBuilder<'_>
    );

    fn get_parent_trait_ref(
        &self, 
        code: &ObligationCauseCode<'tcx>
    ) -> Option<(String, Option<Span>)>;

    fn note_version_mismatch(
        &self, 
        err: &mut DiagnosticBuilder<'_>, 
        trait_ref: &PolyTraitRef<'tcx>
    );

    fn mk_trait_obligation_with_new_self_ty(
        &self, 
        param_env: ParamEnv<'tcx>, 
        trait_ref: PolyTraitRef<'tcx>, 
        new_self_ty: Ty<'tcx>
    ) -> PredicateObligation<'tcx>;

    fn maybe_report_ambiguity(
        &self, 
        obligation: &PredicateObligation<'tcx>, 
        body_id: Option<BodyId>
    );

    fn predicate_can_apply(
        &self, 
        param_env: ParamEnv<'tcx>, 
        pred: PolyTraitRef<'tcx>
    ) -> bool;

    fn note_obligation_cause(
        &self, 
        err: &mut DiagnosticBuilder<'tcx>, 
        obligation: &PredicateObligation<'tcx>
    );

    fn suggest_unsized_bound_if_applicable(
        &self, 
        err: &mut DiagnosticBuilder<'tcx>, 
        obligation: &PredicateObligation<'tcx>
    );

    fn is_recursive_obligation(
        &self, 
        obligated_types: &mut Vec<&TyS<'tcx>>, 
        cause_code: &ObligationCauseCode<'tcx>
    ) -> bool;
}

Required methods

fn error_implies(&self, cond: Predicate<'tcx>, error: Predicate<'tcx>) -> bool[src]

fn report_fulfillment_error(
    &self,
    error: &FulfillmentError<'tcx>,
    body_id: Option<BodyId>,
    fallback_has_occurred: bool
)[src]

fn report_projection_error(
    &self,
    obligation: &PredicateObligation<'tcx>,
    error: &MismatchedProjectionTypes<'tcx>
)[src]

fn fuzzy_match_tys(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> bool[src]

fn describe_generator(&self, body_id: BodyId) -> Option<&'static str>[src]

fn find_similar_impl_candidates(
    &self,
    trait_ref: PolyTraitRef<'tcx>
) -> Vec<TraitRef<'tcx>>[src]

fn report_similar_impl_candidates(
    &self,
    impl_candidates: Vec<TraitRef<'tcx>>,
    err: &mut DiagnosticBuilder<'_>
)[src]

fn get_parent_trait_ref(
    &self,
    code: &ObligationCauseCode<'tcx>
) -> Option<(String, Option<Span>)>[src]

Gets the parent trait chain start

fn note_version_mismatch(
    &self,
    err: &mut DiagnosticBuilder<'_>,
    trait_ref: &PolyTraitRef<'tcx>
)[src]

If the Self type of the unsatisfied trait trait_ref implements a trait with the same path as trait_ref, a help message about a probable version mismatch is added to err

fn mk_trait_obligation_with_new_self_ty(
    &self,
    param_env: ParamEnv<'tcx>,
    trait_ref: PolyTraitRef<'tcx>,
    new_self_ty: Ty<'tcx>
) -> PredicateObligation<'tcx>[src]

Creates a PredicateObligation with new_self_ty replacing the existing type in the trait_ref.

For this to work, new_self_ty must have no escaping bound variables.

fn maybe_report_ambiguity(
    &self,
    obligation: &PredicateObligation<'tcx>,
    body_id: Option<BodyId>
)[src]

fn predicate_can_apply(
    &self,
    param_env: ParamEnv<'tcx>,
    pred: PolyTraitRef<'tcx>
) -> bool[src]

fn note_obligation_cause(
    &self,
    err: &mut DiagnosticBuilder<'tcx>,
    obligation: &PredicateObligation<'tcx>
)[src]

fn suggest_unsized_bound_if_applicable(
    &self,
    err: &mut DiagnosticBuilder<'tcx>,
    obligation: &PredicateObligation<'tcx>
)[src]

fn is_recursive_obligation(
    &self,
    obligated_types: &mut Vec<&TyS<'tcx>>,
    cause_code: &ObligationCauseCode<'tcx>
) -> bool[src]

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Implementors

impl<'a, 'tcx> InferCtxtPrivExt<'tcx> for InferCtxt<'a, 'tcx>[src]

fn get_parent_trait_ref(
    &self,
    code: &ObligationCauseCode<'tcx>
) -> Option<(String, Option<Span>)>[src]

Gets the parent trait chain start

fn note_version_mismatch(
    &self,
    err: &mut DiagnosticBuilder<'_>,
    trait_ref: &PolyTraitRef<'tcx>
)[src]

If the Self type of the unsatisfied trait trait_ref implements a trait with the same path as trait_ref, a help message about a probable version mismatch is added to err

fn predicate_can_apply(
    &self,
    param_env: ParamEnv<'tcx>,
    pred: PolyTraitRef<'tcx>
) -> bool[src]

Returns true if the trait predicate may apply for some assignment to the type parameters.

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