Struct r::lang::Frame

pub struct Frame {
    pub call: Expr,
    pub to: Obj,
    pub env: Rc<Environment>,
}

Fields

call: Expr

to: Obj

env: Rc<Environment>

Implementations

impl Frame

pub fn new(call: Expr, env: Rc<Environment>) -> Frame

pub fn new_child_env(&self) -> Box<dyn Context>

Trait Implementations

impl Clone for Frame

fn clone(&self) -> Frame

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Context for Frame

fn env(&self) -> Rc<Environment>

fn eval_mut(&mut self, expr: Expr) -> EvalResult

fn get(&mut self, name: String) -> EvalResult

fn get_mut(&mut self, name: String) -> EvalResult

fn get_ellipsis(&mut self) -> EvalResult

fn assign_lazy(&mut self, _to: Expr, _from: Expr) -> EvalResult

fn assign(&mut self, _to: Expr, _from: Obj) -> EvalResult

fn eval_call(&mut self, expr: Expr) -> EvalResult

fn eval_call_mut(&mut self, expr: Expr) -> EvalResult

fn eval(&mut self, expr: Expr) -> EvalResult

fn eval_in(&mut self, expr: Expr, env: Rc<Environment>) -> EvalResult

fn eval_and_finalize(&mut self, expr: Expr) -> EvalResult

fn eval_binary(&mut self, exprs: (Expr, Expr)) -> Result<(Obj, Obj), Signal>

fn eval_list_lazy(&mut self, l: ExprList) -> EvalResult

impl Debug for Frame

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

Formats the value using the given formatter.

impl Display for Frame

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

Formats the value using the given formatter.

impl PartialEq for Frame

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Frame