Enum rustc_infer::infer::undo_log::UndoLog

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pub(crate) enum UndoLog<'tcx> {
    TypeVariables(UndoLog<'tcx>),
    ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>),
    IntUnificationTable(UndoLog<Delegate<IntVid>>),
    FloatUnificationTable(UndoLog<Delegate<FloatVid>>),
    RegionConstraintCollector(UndoLog<'tcx>),
    RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>),
    ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>),
    PushRegionObligation,
}

Expand description

Records the “undo” data for a single operation that affects some form of inference variable.

Variants

`TypeVariables(UndoLog<'tcx>)`

`ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)`

`IntUnificationTable(UndoLog<Delegate<IntVid>>)`

`FloatUnificationTable(UndoLog<Delegate<FloatVid>>)`

`RegionConstraintCollector(UndoLog<'tcx>)`

`RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)`

`ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)`

`PushRegionObligation`

Trait Implementations

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impl<'tcx> Clone for UndoLog<'tcx>

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

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl<'tcx> From<Instantiate> for UndoLog<'tcx>

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fn from(x: Instantiate) -> Self

Performs the conversion.

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impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

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fn from(x: UndoLog<'tcx>) -> Self

Performs the conversion.

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impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

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fn from(x: UndoLog<'tcx>) -> Self

Performs the conversion.

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impl<'tcx> From<UndoLog<Delegate>> for UndoLog<'tcx>

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fn from(x: UndoLog<Delegate>) -> Self

Performs the conversion.

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impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>

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fn from(
x: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>
) -> Self

Performs the conversion.

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impl<'tcx> Rollback<UndoLog<'tcx>> for InferCtxtInner<'tcx>

The Rollback trait defines how to rollback a particular action.

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fn reverse(&mut self, undo: UndoLog<'tcx>)

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for UndoLog<'tcx>

impl<'tcx> !Send for UndoLog<'tcx>

impl<'tcx> !Sync for UndoLog<'tcx>

impl<'tcx> Unpin for UndoLog<'tcx>

impl<'tcx> !UnwindSafe for UndoLog<'tcx>

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub 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,

const: unstable · source

pub 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,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub 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> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<'a, T> Captures<'a> for T where
T: ?Sized,

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 80 bytes

Size for each variant:

TypeVariables: 48 bytes
ConstUnificationTable: 64 bytes
IntUnificationTable: 24 bytes
FloatUnificationTable: 24 bytes
RegionConstraintCollector: 32 bytes
RegionUnificationTable: 32 bytes
ProjectionCache: 72 bytes
PushRegionObligation: 0 bytes

Enum rustc_infer::infer::undo_log::UndoLog

Variants

TypeVariables(UndoLog<'tcx>)

ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)

IntUnificationTable(UndoLog<Delegate<IntVid>>)

FloatUnificationTable(UndoLog<Delegate<FloatVid>>)

RegionConstraintCollector(UndoLog<'tcx>)

RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)

ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)

PushRegionObligation

Trait Implementations

impl<'tcx> Clone for UndoLog<'tcx>

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

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

impl<'tcx> From<Instantiate> for UndoLog<'tcx>

fn from(x: Instantiate) -> Self

impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

fn from(x: UndoLog<'tcx>) -> Self

impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

fn from(x: UndoLog<'tcx>) -> Self

impl<'tcx> From<UndoLog<Delegate>> for UndoLog<'tcx>

fn from(x: UndoLog<Delegate>) -> Self

impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>

fn from( x: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>) -> Self

impl<'tcx> Rollback<UndoLog<'tcx>> for InferCtxtInner<'tcx>

fn reverse(&mut self, undo: UndoLog<'tcx>)

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for UndoLog<'tcx>

impl<'tcx> !Send for UndoLog<'tcx>

impl<'tcx> !Sync for UndoLog<'tcx>

impl<'tcx> Unpin for UndoLog<'tcx>

impl<'tcx> !UnwindSafe for UndoLog<'tcx>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'a, T> Captures<'a> for T where T: ?Sized,

Layout

`TypeVariables(UndoLog<'tcx>)`

`ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)`

`IntUnificationTable(UndoLog<Delegate<IntVid>>)`

`FloatUnificationTable(UndoLog<Delegate<FloatVid>>)`

`RegionConstraintCollector(UndoLog<'tcx>)`

`RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)`

`ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)`

`PushRegionObligation`

fn from(
x: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>
) -> Self

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<'a, T> Captures<'a> for T where
T: ?Sized,