Enum rustc_abi::Abi

source ·
pub enum Abi {
    Uninhabited,
    Scalar(Scalar),
    ScalarPair(Scalar, Scalar),
    Vector {
        element: Scalar,
        count: u64,
    },
    Aggregate {
        sized: bool,
    },
}
Expand description

Describes how values of the type are passed by target ABIs, in terms of categories of C types there are ABI rules for.

Variants§

§

Uninhabited

§

Scalar(Scalar)

§

ScalarPair(Scalar, Scalar)

§

Vector

Fields

§element: Scalar
§count: u64
§

Aggregate

Fields

§sized: bool

If true, the size is exact, otherwise it’s only a lower bound.

Implementations§

source§

impl Abi

source

pub fn is_unsized(&self) -> bool

Returns true if the layout corresponds to an unsized type.

source

pub fn is_sized(&self) -> bool

source

pub fn is_signed(&self) -> bool

Returns true if this is a single signed integer scalar

source

pub fn is_uninhabited(&self) -> bool

Returns true if this is an uninhabited type

source

pub fn is_scalar(&self) -> bool

Returns true if this is a scalar type

source

pub fn is_bool(&self) -> bool

Returns true if this is a bool

source

pub fn inherent_align<C: HasDataLayout>( &self, cx: &C ) -> Option<AbiAndPrefAlign>

Returns the fixed alignment of this ABI, if any is mandated.

source

pub fn inherent_size<C: HasDataLayout>(&self, cx: &C) -> Option<Size>

Returns the fixed size of this ABI, if any is mandated.

source

pub fn to_union(&self) -> Self

Discard validity range information and allow undef.

source

pub fn eq_up_to_validity(&self, other: &Self) -> bool

Trait Implementations§

source§

impl Clone for Abi

source§

fn clone(&self) -> Abi

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
source§

impl Debug for Abi

source§

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

Formats the value using the given formatter. Read more
source§

impl Hash for Abi

source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
source§

impl<__CTX> HashStable<__CTX> for Abiwhere __CTX: HashStableContext,

source§

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

source§

impl PartialEq<Abi> for Abi

source§

fn eq(&self, other: &Abi) -> bool

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

impl Copy for Abi

source§

impl Eq for Abi

source§

impl StructuralEq for Abi

source§

impl StructuralPartialEq for Abi

Auto Trait Implementations§

§

impl RefUnwindSafe for Abi

§

impl Send for Abi

§

impl Sync for Abi

§

impl Unpin for Abi

§

impl UnwindSafe for Abi

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

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.

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

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

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

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

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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

§

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

The type returned in the event of a conversion error.
source§

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

Performs the conversion.

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: 112 bytes

Size for each variant:

  • Uninhabited: 0 bytes
  • Scalar: 63 bytes
  • ScalarPair: 111 bytes
  • Vector: 63 bytes
  • Aggregate: 1 byte