Struct rustc::traits::ObligationCause

pub struct ObligationCause<'tcx> {
    pub span: Span,
    pub body_id: NodeId,
    pub code: ObligationCauseCode<'tcx>,
}

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

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Why did we incur this obligation? Used for error reporting.

Fields

span: Span

🔬 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?

body_id: NodeId

🔬 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?

code: 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?

Methods

impl<'tcx> ObligationCause<'tcx>

pub fn new(
    span: Span,
    body_id: NodeId,
    code: ObligationCauseCode<'tcx>
) -> ObligationCause<'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?

pub fn misc(span: Span, body_id: NodeId) -> ObligationCause<'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?

pub fn dummy() -> ObligationCause<'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?

Trait Implementations

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

type Lifted = ObligationCause<'tcx>

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

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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> TypeFoldable<'tcx> for ObligationCause<'tcx>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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

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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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fn is_global(&self) -> bool

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

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Errs on the side of returning false.

impl<'tcx> Clone for ObligationCause<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for ObligationCause<'tcx>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'tcx> PartialEq for ObligationCause<'tcx>

fn eq(&self, __arg_0: &ObligationCause<'tcx>) -> bool

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

fn ne(&self, __arg_0: &ObligationCause<'tcx>) -> bool

This method tests for !=.

impl<'tcx> Eq for ObligationCause<'tcx>