rustc_middle::mir::interpret::error

# Struct InterpResult_

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    pub struct InterpResult_<'tcx, T> {
        res: Result<T, InterpErrorInfo<'tcx>>,
        guard: Guard,
    }

Expand description

The result type used by the interpreter. This is a newtype around `Result` to block access to operations like `ok()` that discard UB errors.

We also make things panic if this type is ever implicitly dropped.

## Fields§

§`res: Result<T, InterpErrorInfo<'tcx>>`§`guard: Guard`

## Implementations§

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### impl<'tcx, T> InterpResult_<'tcx, T>

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#### fn new(res: Result<T, InterpErrorInfo<'tcx>>) -> Self

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#### fn disarm(self) -> Result<T, InterpErrorInfo<'tcx>>

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#### pub fn discard_err(self) -> Option<T>

Discard the error information in this result. Only use this if ignoring Undefined Behavior is okay!

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#### pub fn report_err(self) -> Result<T, InterpErrorInfo<'tcx>>

Look at the `Result` wrapped inside of this. Must only be used to report the error!

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#### pub fn map<U>(self, f: impl FnOnce(T) -> U) -> InterpResult<'tcx, U>

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#### pub fn map_err( self, f: impl FnOnce(InterpErrorInfo<'tcx>) -> InterpErrorInfo<'tcx>, ) -> InterpResult<'tcx, T>

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#### pub fn inspect_err( self, f: impl FnOnce(&InterpErrorInfo<'tcx>), ) -> InterpResult<'tcx, T>

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#### pub fn unwrap(self) -> T

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#### pub fn unwrap_or_else(self, f: impl FnOnce(InterpErrorInfo<'tcx>) -> T) -> T

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#### pub fn expect(self, msg: &str) -> T

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#### pub fn and_then<U>( self, f: impl FnOnce(T) -> InterpResult<'tcx, U>, ) -> InterpResult<'tcx, U>

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#### pub fn and<U>(self, other: InterpResult<'tcx, U>) -> InterpResult<'tcx, (T, U)>

Returns success if both `self` and `other` succeed, while ensuring we don’t accidentally drop an error.

If both are an error, `self` will be reported.

## Trait Implementations§

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### impl<'tcx, T: Debug> Debug for InterpResult_<'tcx, T>

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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### impl<'tcx, T, V: FromIterator<T>> FromIterator<InterpResult_<'tcx, T>> for InterpResult<'tcx, V>

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#### fn from_iter<I: IntoIterator<Item = InterpResult<'tcx, T>>>(iter: I) -> Self

Creates a value from an iterator. Read more
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### impl<'tcx, T, E: Into<InterpErrorInfo<'tcx>>> FromResidual<Result<Infallible, E>> for InterpResult_<'tcx, T>

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#### fn from_residual(residual: Result<Infallible, E>) -> Self

🔬This is a nightly-only experimental API. (`try_trait_v2`)
Constructs the type from a compatible `Residual` type. Read more
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### impl<'tcx, T> FromResidual<Yeet<InterpError<'tcx>>> for InterpResult_<'tcx, T>

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#### fn from_residual(ops::Yeet: Yeet<InterpError<'tcx>>) -> Self

🔬This is a nightly-only experimental API. (`try_trait_v2`)
Constructs the type from a compatible `Residual` type. Read more
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### impl<'tcx, T> FromResidual for InterpResult_<'tcx, T>

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#### fn from_residual(residual: InterpResult_<'tcx, Infallible>) -> Self

🔬This is a nightly-only experimental API. (`try_trait_v2`)
Constructs the type from a compatible `Residual` type. Read more
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### impl<'tcx, T> Try for InterpResult_<'tcx, T>

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#### type Output = T

🔬This is a nightly-only experimental API. (`try_trait_v2`)
The type of the value produced by `?` when not short-circuiting.
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#### type Residual = InterpResult_<'tcx, Infallible>

🔬This is a nightly-only experimental API. (`try_trait_v2`)
The type of the value passed to `FromResidual::from_residual` as part of `?` when short-circuiting. Read more
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#### fn from_output(output: Self::Output) -> Self

🔬This is a nightly-only experimental API. (`try_trait_v2`)
Constructs the type from its `Output` type. Read more
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#### fn branch(self) -> ControlFlow<Self::Residual, Self::Output>

🔬This is a nightly-only experimental API. (`try_trait_v2`)
Used in `?` to decide whether the operator should produce a value (because this returned `ControlFlow::Continue`) or propagate a value back to the caller (because this returned `ControlFlow::Break`). Read more

## Auto Trait Implementations§

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### impl<'tcx, T> Freeze for InterpResult_<'tcx, T>
where T: Freeze,

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### impl<'tcx, T> !RefUnwindSafe for InterpResult_<'tcx, T>

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### impl<'tcx, T> !Send for InterpResult_<'tcx, T>

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### impl<'tcx, T> !Sync for InterpResult_<'tcx, T>

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### impl<'tcx, T> Unpin for InterpResult_<'tcx, T>
where T: Unpin,

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### impl<'tcx, T> !UnwindSafe for InterpResult_<'tcx, T>

## Blanket Implementations§

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### impl<T> Aligned for T

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#### const ALIGN: Alignment = _

Alignment of `Self`.
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### impl<T> Any for T
where 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 T
where 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 T
where 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, R> CollectAndApply<T, R> for T

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#### fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to `f(&iter.collect::<Vec<_>>())`.

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#### type Output = R

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### impl<T> Filterable for T

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#### fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. 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> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where 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> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<P> IntoQueryParam<P> for P

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#### fn into_query_param(self) -> P

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### impl<T> MaybeResult<T> for T

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#### type Error = !

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#### fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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#### fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T, U> TryFrom<U> for T
where 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 T
where 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.
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### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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#### fn upcast(self, interner: I) -> U

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### impl<I, T> UpcastFrom<I, T> for T

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#### fn upcast_from(from: T, _tcx: I) -> T

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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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#### default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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### impl<'a, T> Captures<'a> for T
where T: ?Sized,

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### impl<T> ErasedDestructor for T
where T: 'static,

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### impl<T> MaybeSendSync for T

## Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.