Struct starlark::values::OwnedFrozenValueTyped

pub struct OwnedFrozenValueTyped<T: StarlarkValue<'static>> { /* private fields */ }

Same as OwnedFrozenValue but it is known to contain T.

Implementations

impl<T: StarlarkValue<'static>> OwnedFrozenValueTyped<T>

pub unsafe fn to_frozen_value(&self) -> FrozenValue

Erase the type.

This operation is unsafe because returned value is not bound by the heap lifetime. So if the heap is dropped, the returned value quetly becomes invalid.

pub fn to_value<'v>(&'v self) -> Value<'v>

Get a value reference.

pub fn to_owned_frozen_value(&self) -> OwnedFrozenValue

Erase the type.

pub fn into_owned_frozen_ref(self) -> OwnedFrozenRef<T>

Convert to an owned ref.

pub fn owner(&self) -> &FrozenHeapRef

Obtain a reference to the FrozenHeap that owns this value.

pub fn as_ref(&self) -> &T

Obtain a reference to the value.

pub unsafe fn owned_frozen_value(&self, heap: &FrozenHeap) -> FrozenValue

Extract a FrozenValue by passing the FrozenHeap which will keep it alive.

See OwnedFrozenValue::owned_frozen_value.

pub fn owned_value<'v>(&self, heap: &'v FrozenHeap) -> Value<'v>

Extract a Value by passing the FrozenHeap which will promise to keep it alive.

See OwnedFrozenValue::owned_value.

pub fn map<U: StarlarkValue<'static>>( &self, f: impl FnOnce(FrozenValueTyped<'_, T>) -> FrozenValueTyped<'_, U> ) -> OwnedFrozenValueTyped<U>

Operate on the FrozenValue stored inside. Safe provided you don’t store the argument FrozenValue after the closure has returned. Using this function is discouraged when possible.

pub fn try_map<U: StarlarkValue<'static>, E>( &self, f: impl FnOnce(FrozenValueTyped<'_, T>) -> Result<FrozenValueTyped<'_, U>, E> ) -> Result<OwnedFrozenValueTyped<U>, E>

Same as map above but with Result

Trait Implementations

impl<T: StarlarkValue<'static> + Allocative> Allocative for OwnedFrozenValueTyped<T>

fn visit<'allocative_a, 'allocative_b: 'allocative_a>( &self, visitor: &'allocative_a mut Visitor<'allocative_b> )

impl<T: StarlarkValue<'static>> Clone for OwnedFrozenValueTyped<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + StarlarkValue<'static>> Debug for OwnedFrozenValueTyped<T>

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

Formats the value using the given formatter.

impl<T: StarlarkValue<'static>> Deref for OwnedFrozenValueTyped<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: StarlarkValue<'static>> Dupe for OwnedFrozenValueTyped<T>

fn dupe(&self) -> Self