Struct Closure 

pub struct Closure {
    pub params: Vec<Arc<str>>,
    pub rest: Option<Arc<str>>,
    pub body: Vec<Spanned>,
    pub captured_env: Env,
    pub source: Span,
}

A user-defined closure produced by (lambda …) or (define (f …) …).

Fields

params: Vec<Arc<str>>

rest: Option<Arc<str>>

Optional rest parameter — (lambda (a b . rest) …) or (lambda (a b &rest rs) …).

body: Vec<Spanned>

Body forms, preserved as Spanned so error locations inside the body remain accurate after construction.

captured_env: Env

source: Span