Struct NodePtr 

pub struct NodePtr(/* private fields */);

Identity of a traced heap allocation: the Rc’s data pointer.

Never dereferenced by the collector itself except through the typed handles it holds; opaque participants (sema-vm’s UpvalueCell, test node types) recover their &T from it inside their own trace/sever fns.

Implementations

impl NodePtr

pub fn raw(self) -> *const u8

The raw data pointer (for opaque trace/sever fns to recover &T).

pub fn of_rc<T: ?Sized>(rc: &Rc<T>) -> NodePtr

Node identity of any Rc allocation (works for Rc<dyn Any> too).

pub fn of_value(v: &Value) -> Option<NodePtr>

Node identity of a cycle-capable heap value. None for immediates and leaf heap types (strings, bytevectors, numeric arrays, big ints, prompts, messages, conversations, streams, bignums, rationals, complex) — leaves cannot sit on a cycle and are never given nodes.

pub fn of_env_bindings(env: &Env) -> NodePtr

Node identity of an env: its shared bindings allocation. This is the pointer to pass in collect’s pin set for session root envs.

Trait Implementations

impl Clone for NodePtr

fn clone(&self) -> NodePtr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NodePtr

impl Debug for NodePtr

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

Formats the value using the given formatter.

impl Eq for NodePtr

impl Hash for NodePtr

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 PartialEq for NodePtr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NodePtr