Struct Env 

pub struct Env {
    pub values: HashMap<String, Value>,
    pub exports: HashMap<String, Value>,
    pub parent: Option<Rc<RefCell<Env>>>,
}

Fields

values: HashMap<String, Value>

exports: HashMap<String, Value>

parent: Option<Rc<RefCell<Env>>>

Implementations

impl Env

pub fn new() -> Self

pub fn new_with_parent(parent: Option<Rc<RefCell<Env>>>) -> Self

pub fn assign(&mut self, name: &str, val: Value) -> Result<(), String>

pub fn define(&mut self, name: String, val: Value)

pub fn get(&self, name: &str) -> Option<Value>

pub fn define_export(&mut self, name: String, value: Value)

pub fn exported_values(&self) -> HashMap<String, Value>

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.