Struct VariantLayout 

pub struct VariantLayout<FieldIdx: Idx> {
    pub size: Size,
    pub backend_repr: BackendRepr,
    pub field_offsets: IndexVec<FieldIdx, Size>,
    pub(crate) fields_in_memory_order: IndexVec<u32, FieldIdx>,
    pub(crate) largest_niche: Option<Niche>,
    pub(crate) uninhabited: bool,
}

Fields

size: Size

backend_repr: BackendRepr

field_offsets: IndexVec<FieldIdx, Size>

fields_in_memory_order: IndexVec<u32, FieldIdx>

largest_niche: Option<Niche>

uninhabited: bool

Implementations

impl<FieldIdx: Idx> VariantLayout<FieldIdx>

pub fn from_layout(layout: LayoutData<FieldIdx, impl Idx>) -> Self

pub fn is_uninhabited(&self) -> bool

pub fn has_fields(&self) -> bool

Trait Implementations

impl<FieldIdx: Clone + Idx> Clone for VariantLayout<FieldIdx>

fn clone(&self) -> VariantLayout<FieldIdx>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<FieldIdx: Debug + Idx> Debug for VariantLayout<FieldIdx>

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

Formats the value using the given formatter.

impl<FieldIdx: Hash + Idx> Hash for VariantLayout<FieldIdx>

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

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<FieldIdx: PartialEq + Idx> PartialEq for VariantLayout<FieldIdx>

fn eq(&self, other: &VariantLayout<FieldIdx>) -> 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<FieldIdx> StableHash for VariantLayout<FieldIdx>

where FieldIdx: StableHash + Idx,

fn stable_hash<__Hcx: StableHashCtxt>( &self, __hcx: &mut __Hcx, __hasher: &mut StableHasher, )

impl<FieldIdx: Eq + Idx> Eq for VariantLayout<FieldIdx>

impl<FieldIdx: Idx> StructuralPartialEq for VariantLayout<FieldIdx>

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: 208 bytes