Struct LayoutShape

pub struct LayoutShape {
    pub fields: FieldsShape,
    pub variants: VariantsShape,
    pub abi: ValueAbi,
    pub abi_align: u64,
    pub size: MachineSize,
}

The layout of a type in memory.

Fields

fields: FieldsShape

The fields location within the layout

variants: VariantsShape

Encodes information about multi-variant layouts. Even with Multiple variants, a layout still has its own fields! Those are then shared between all variants.

To access all fields of this layout, both fields and the fields of the active variant must be taken into account.

abi: ValueAbi

The abi defines how this data is passed between functions.

abi_align: u64

The ABI mandated alignment in bytes.

size: MachineSize

The size of this layout in bytes.

Implementations

impl LayoutShape

pub fn is_unsized(&self) -> bool

Returns true if the layout corresponds to an unsized type.

pub fn is_sized(&self) -> bool

pub fn is_1zst(&self) -> bool

Returns true if the type is sized and a 1-ZST (meaning it has size 0 and alignment 1).

Trait Implementations

impl Clone for LayoutShape

fn clone(&self) -> LayoutShape

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutShape

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

Formats the value using the given formatter.

impl Hash for LayoutShape

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 PartialEq for LayoutShape

fn eq(&self, other: &LayoutShape) -> 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 Serialize for LayoutShape

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for LayoutShape

impl StructuralPartialEq for LayoutShape

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: 272 bytes