Enum Value 

pub enum Value {
    Closure {
        param: VarName,
        body: Expr,
        env: Env,
    },
}

A runtime value.

Spike 1 has a single variant (closures); spike 2 will extend this enum with literals, references, and any other values the GC must trace.

Variants

Closure

A function closed over its lexical environment.

Fields

param: VarName

The parameter the function binds when applied.

body: Expr

The function body.

env: Env

The captured environment at the point of lambda evaluation.

Implementations

impl Value

pub fn closure(param: VarName, body: Expr, env: Env) -> Self

Build a closure value.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl Eq for Value

impl PartialEq for Value

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Value