Trait VcRead 

pub trait VcRead<T>
where
    T: VcValueType,
{
    type Target;

    // Required methods
    fn value_to_target_ref(value: &T) -> &Self::Target;
    fn value_to_target(value: T) -> Self::Target;
    fn target_to_value(target: Self::Target) -> T;
    fn target_to_value_ref(target: &Self::Target) -> &T;
    fn target_to_value_mut_ref(target: &mut Self::Target) -> &mut T;
}

Trait that controls crate::Vc’s read representation.

Has two implementations:

• VcDefaultRead
• VcTransparentRead

This trait must remain sealed within this crate.

Required Associated Types

type Target

The read target type. This is the type that will be returned when .awaiting a Vc of a value type.

For instance, the target of .awaiting a Vc<Completion> will be a Completion. When using #[turbo_tasks::value(transparent)], the target will be different than the value type.

Required Methods

fn value_to_target_ref(value: &T) -> &Self::Target

Convert a reference to a value to a reference to the target type.

fn value_to_target(value: T) -> Self::Target

Convert a value to the target type.

fn target_to_value(target: Self::Target) -> T

Convert the target type to the value.

fn target_to_value_ref(target: &Self::Target) -> &T

Convert a reference to a target type to a reference to a value.

fn target_to_value_mut_ref(target: &mut Self::Target) -> &mut T

Convert a mutable reference to a target type to a reference to a value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T> VcRead<T> for VcDefaultRead<T>

where T: VcValueType,

type Target = T

impl<T, Target> VcRead<T> for VcTransparentRead<T, Target>

where T: VcValueType, Target: Any + Send + Sync,

type Target = Target