Struct EnvRef 

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

A shared reference to an EnvNode: every handle on a node — an Env link, a Value::Module, an iota’s or object’s prototype — goes through it.

Today it is a bare Rc, but as the one place nodes are allocated, cloned and compared, it is where to hook instrumentation (see [stats_env]) or to try another representation (a plain Box, a pool). It must stay one non-null word so Option<EnvRef> keeps the niche.

Implementations

impl EnvRef

pub fn ptr_eq(a: &Self, b: &Self) -> bool

Whether a and b are the same node: the identity of a module instance.

pub fn as_ptr(this: &Self) -> *const EnvNode

The node’s address, for hashing by identity.

Trait Implementations

impl Clone for EnvRef

fn clone(&self) -> EnvRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvRef

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

Formats the value using the given formatter.

impl Deref for EnvRef

type Target = EnvNode

The resulting type after dereferencing.

fn deref(&self) -> &EnvNode

Dereferences the value.