Struct Value

pub struct Value<B, V>
where
    B: GetBytesMut + DropAsAligned,
    V: ?Sized + HasDrop,
{ /* private fields */ }

Implementations

impl<V: HasDrop> Value<MaybeUninit<usize>, V>

pub fn try_new<T: Any + DropBytes>( value: T, ) -> Option<Value<MaybeUninit<usize>, V>>

where V: VTable<T>,

pub fn new<T: Any + DropBytes>(value: T) -> Value<MaybeUninit<usize>, V>

where V: VTable<T>,

This function will panic if the given type does not fit into a usize.

impl<V: ?Sized + HasDrop> Value<MaybeUninit<usize>, V>

pub fn upcast<U: HasDrop + From<V>>(self) -> SmallValue<U>

where V: Clone,

pub fn into_raw_parts(self) -> (MaybeUninit<usize>, TypeId, usize, Ptr<V>)

Convert this value into its destructured parts.

The caller must insure that the memory allocated by the returned bytes is freed.

impl<V: HasDrop> Value<Box<[MaybeUninit<u8>]>, V>

pub fn new<T: Any + DropBytes>(value: T) -> Value<Box<[MaybeUninit<u8>]>, V>

where V: VTable<T>,

impl<V: ?Sized + HasDrop> Value<Box<[MaybeUninit<u8>]>, V>

pub fn upcast<U: HasDrop + From<V>>(self) -> BoxValue<U>

where V: Clone,

pub fn into_raw_parts(self) -> (Box<[MaybeUninit<u8>]>, TypeId, usize, Ptr<V>)

Convert this value into its destructured parts.

The caller must insure that the memory allocated by the returned bytes is freed.

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop> Value<B, V>

pub fn as_ref(&self) -> ValueRef<'_, V>

pub fn as_mut(&mut self) -> ValueMut<'_, V>

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop> Value<B, V>

pub fn size(&self) -> usize

Get the size of the value pointed-to by this reference.

pub fn value_type_id(&self) -> TypeId

Get the TypeId of the referenced value.

pub fn value_alignment(&self) -> usize

Get the alignment of the referenced value.

pub fn is<T: 'static>(&self) -> bool

Returns true if this referenced value’s type is the same as T.

impl<V: ?Sized + HasDrop> Value<Box<[MaybeUninit<u8>]>, V>

pub fn downcast<T: 'static>(self) -> Option<Box<T>>

Downcast this value reference into a boxed T type. Return None if the downcast fails.

impl<V: ?Sized + HasDrop> Value<MaybeUninit<usize>, V>

pub fn downcast<T: 'static>(self) -> Option<T>

Downcast this value reference into a boxed T type. Return None if the downcast fails.

Trait Implementations

impl<V: ?Sized + Clone + HasClone + HasDrop> Clone for Value<Box<[MaybeUninit<u8>]>, V>

fn clone(&self) -> Value<Box<[MaybeUninit<u8>]>, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: ?Sized + Clone + HasClone + HasDrop> Clone for Value<MaybeUninit<usize>, V>

fn clone(&self) -> Value<MaybeUninit<usize>, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDebug + HasDrop> Debug for Value<B, V>

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

Formats the value using the given formatter.

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop> Drop for Value<B, V>

fn drop(&mut self)

Executes the destructor for this type.

impl<'a, B, V> From<&'a Value<B, V>> for ValueRef<'a, V>

where B: GetBytesRef + GetBytesMut + DropAsAligned, V: ?Sized + Clone + HasDrop,

fn from(val: &'a Value<B, V>) -> Self

Converts to this type from the input type.

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop + HasHash> Hash for Value<B, V>

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<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop + HasPartialEq> PartialEq for Value<B, V>

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

Panics

This function panics if the types of the two operands don’t match.

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<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop + HasPartialEq> Eq for Value<B, V>

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop + HasSend> Send for Value<B, V>

impl<B: GetBytesMut + DropAsAligned, V: ?Sized + HasDrop + HasSync> Sync for Value<B, V>