Enum BindingStorageClass 

pub enum BindingStorageClass {
    Deferred,
    Direct,
    UniqueHeap,
    SharedCow,
    Reference,
    LocalMutablePtr,
}

Planned runtime storage strategy for a binding slot.

Deferred is the initial state for ordinary bindings until a later planner decides whether the slot can stay direct or must be upgraded.

LocalMutablePtr (Closure Spec Phase D) marks a slot that lives on the stack AND has had a typed *mut T handed to a non-escaping closure env. The borrow checker has verified that no outer code races the closure over that slot’s lifetime (the ClosureCapture was lowered as an exclusive borrow with LoanSinkKind::ClosureEnvMut). The binding is still direct in the sense that the slot stays on the caller stack — no Arc<RwLock<>>, no boxing. This is orthogonal to Direct/UniqueHeap: Direct means “no indirection and no closure-env sharing”, LocalMutablePtr means “no indirection but a closure env holds a typed pointer into this slot”.

Variants

Deferred

Direct

UniqueHeap

SharedCow

Reference

LocalMutablePtr

Phase D: stack-resident slot with a typed *mut T capture handed to a non-escaping closure. See the doc comment on BindingStorageClass.

Trait Implementations

impl Clone for BindingStorageClass

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BindingStorageClass

impl Debug for BindingStorageClass

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BindingStorageClass

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for BindingStorageClass

impl PartialEq for BindingStorageClass

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for BindingStorageClass

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BindingStorageClass