Enum rustc_typeck::check::cast::PointerKind

source · [−]

enum PointerKind<'tcx> {
    Thin,
    VTable(Option<DefId>),
    Length,
    OfProjection(&'tcx ProjectionTy<'tcx>),
    OfOpaque(DefId, SubstsRef<'tcx>),
    OfParam(&'tcx ParamTy),
}

Expand description

The kind of pointer and associated metadata (thin, length or vtable) - we only allow casts between fat pointers if their metadata have the same kind.

Variants

`Thin`

No metadata attached, ie pointer to sized type or foreign type

`VTable(Option<DefId>)`

A trait object

`Length`

Slice

`OfProjection(&'tcx ProjectionTy<'tcx>)`

The unsize info of this projection

`OfOpaque(DefId, SubstsRef<'tcx>)`

The unsize info of this opaque ty

`OfParam(&'tcx ParamTy)`

The unsize info of this parameter

Trait Implementations

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impl<'tcx> Clone for PointerKind<'tcx>

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

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<'tcx> PartialEq<PointerKind<'tcx>> for PointerKind<'tcx>

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

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

1.0.0 · source

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

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impl<'tcx> StructuralPartialEq for PointerKind<'tcx>

Auto Trait Implementations

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

impl<'tcx> Send for PointerKind<'tcx>

impl<'tcx> Sync for PointerKind<'tcx>

impl<'tcx> Unpin for PointerKind<'tcx>

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

Blanket Implementations

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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 Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

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

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

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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impl<'a, T> Captures<'a> for Twhere
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: 16 bytes

Size for each variant:

Thin: 0 bytes
VTable: 8 bytes
Length: 0 bytes
OfProjection: 8 bytes
OfOpaque: 16 bytes
OfParam: 8 bytes

Enum rustc_typeck::check::cast::PointerKind

Variants

Thin

VTable(Option<DefId>)

Length

OfProjection(&'tcx ProjectionTy<'tcx>)

OfOpaque(DefId, SubstsRef<'tcx>)

OfParam(&'tcx ParamTy)

Trait Implementations

impl<'tcx> Clone for PointerKind<'tcx>

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

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

impl<'tcx> PartialEq<PointerKind<'tcx>> for PointerKind<'tcx>

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

fn ne(&self, other: &Rhs) -> bool

impl<'tcx> Copy for PointerKind<'tcx>

impl<'tcx> Eq for PointerKind<'tcx>

impl<'tcx> StructuralEq for PointerKind<'tcx>

impl<'tcx> StructuralPartialEq for PointerKind<'tcx>

Auto Trait Implementations

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

impl<'tcx> Send for PointerKind<'tcx>

impl<'tcx> Sync for PointerKind<'tcx>

impl<'tcx> Unpin for PointerKind<'tcx>

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

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

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

Layout

`Thin`

`VTable(Option<DefId>)`

`Length`

`OfProjection(&'tcx ProjectionTy<'tcx>)`

`OfOpaque(DefId, SubstsRef<'tcx>)`

`OfParam(&'tcx ParamTy)`

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

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

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

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

impl<T> ToOwned for Twhere
T: Clone,

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

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

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