Struct foolang::eval::Env

pub struct Env {
    pub env_ref: EnvRef,
    pub foo: Rc<Foolang>,
}

Lexical environment. Exists around EnvImpl to provide access to the Rc.

Fields

env_ref: EnvRef

Underlying environment.

foo: Rc<Foolang>

Vtables for builtin classes.

Methods

impl Env

pub fn extend(
    &self,
    symbols: HashMap<String, Binding>,
    receiver: Option<&Object>
) -> Env

Creates a new environment enclosed by this one, containing symbols, receiver, and closure as the home.

pub fn define(&self, name: &str, value: Object)

pub fn add_binding(&self, name: &str, binding: Binding)

pub fn set(&self, name: &str, value: Object) -> Option<Eval>

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

pub fn eval_all(&self, source: &str) -> Eval

pub fn eval(&self, expr: &Expr) -> Eval

pub fn maybe_type(
    &self,
    maybe_name: &Option<String>
) -> Result<Option<Rc<Vtable>>, Unwind>

pub fn find_type(&self, name: &str) -> Result<Rc<Vtable>, Unwind>

pub fn find_class(&self, name: &str) -> Result<Rc<Class>, Unwind>

pub fn find_interface(&self, name: &str) -> Result<Rc<Class>, Unwind>

pub fn find_global(&self, name: &str) -> Option<Object>

pub fn find_global_or_unwind(&self, name: &str) -> Eval

pub fn import_everything(&self, module: &Env) -> Eval

Trait Implementations

impl Clone for Env

fn clone(&self) -> Env

Returns a copy 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.

impl PartialEq<Env> for Env

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.