Enum Primitive

pub enum Primitive {
    Int(Integer, bool),
    Float(Float),
    Pointer(AddressSpace),
}

Fundamental unit of memory access and layout.

Variants

Int(Integer, bool)

The bool is the signedness of the Integer type.

One would think we would not care about such details this low down, but some ABIs are described in terms of C types and ISAs where the integer arithmetic is done on {sign,zero}-extended registers, e.g. a negative integer passed by zero-extension will appear positive in the callee, and most operations on it will produce the wrong values.

Float(Float)

Pointer(AddressSpace)

Implementations

impl Primitive

pub fn size<C>(self, cx: &C) -> Size

where C: HasDataLayout,

pub fn align<C>(self, cx: &C) -> AbiAndPrefAlign

where C: HasDataLayout,

Trait Implementations

impl Clone for Primitive

fn clone(&self) -> Primitive

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Primitive

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

Formats the value using the given formatter.

impl Hash for Primitive

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<__CTX> HashStable<__CTX> for Primitive

where __CTX: HashStableContext,

fn hash_stable( &self, __hcx: &mut __CTX, __hasher: &mut StableHasher<SipHasher128>, )

impl PartialEq for Primitive

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Primitive

impl Eq for Primitive

impl StructuralPartialEq for Primitive

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: 8 bytes

Size for each variant:

• Int: 2 bytes
• Float: 1 byte
• Pointer: 7 bytes