Struct Env 

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

A shared, persistent environment: a nameless cons list of the running activation’s bindings (innermost first) on top of the closure’s captured Frame. A resolved reference (Expr::Local) reaches its value by walking its de Bruijn index over next links and cloning the cell’s value — a pointer chase without name comparison or per-link cloning. Indices beyond the consed cells land in the frame array. The resolver (resolve.rs) assigns each reference the exact number of cells between it and its binder.

Implementations

impl Env

pub const EMPTY: Env

pub fn bind(self, val: Value) -> Self

Cons one binding of val onto env.

pub fn clone_ref(&self) -> Option<EnvRef>

Trait Implementations

impl Clone for Env

fn clone(&self) -> Env

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Env

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

Formats the value using the given formatter.