Enum Env

pub enum Env {
    Top,
    Expansion(Gc<ExpansionContext>),
    LexicalContour(Gc<LexicalContour>),
}

Variants

Top

This is the top level environment

Expansion(Gc<ExpansionContext>)

This is an expansion context

LexicalContour(Gc<LexicalContour>)

This is a lexical contour

Implementations

impl Env

pub async fn is_bound(&self, ident: &Identifier) -> bool

pub async fn fetch_var(&self, ident: &Identifier) -> Option<Gc<Value>>

pub async fn fetch_macro(&self, ident: &Identifier) -> Option<(Env, Gc<Value>)>

pub async fn top() -> Self

pub fn new_lexical_contour(&self) -> LexicalContour

pub fn new_expansion_context( &self, mark: Mark, macro_env: Env, ) -> ExpansionContext

pub fn def_var<'a>( &'a self, ident: &'a Identifier, value: Gc<Value>, ) -> BoxFuture<'a, ()>

pub fn def_macro<'a>( &'a self, ident: &'a Identifier, value: Gc<Value>, ) -> BoxFuture<'a, ()>

pub async fn eval<'e>( &self, exprs: &'e str, ) -> Result<Vec<Vec<Gc<Value>>>, EvalError<'e>>

Evaluate a string, returning all of the results in a Vec

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, __derive_more_f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Gc<ExpansionContext>> for Env

fn from(env: Gc<ExpansionContext>) -> Self

Converts to this type from the input type.

impl From<Gc<LexicalContour>> for Env

fn from(env: Gc<LexicalContour>) -> Self

Converts to this type from the input type.

impl Trace for Env

unsafe fn visit_children(&self, visitor: fn(OpaqueGcPtr))

Safety

unsafe fn finalize(&mut self)

Safety