Struct gluon_vm::macros::MacroEnv

pub struct MacroEnv { /* fields omitted */ }

Type containing macros bound to symbols which can be applied on an AST expression to transform it.

Methods

impl MacroEnv

pub fn new() -> MacroEnv

Creates a new MacroEnv

pub fn insert<M>(&self, name: String, mac: M) where
    M: Macro + 'static, 

Inserts a Macro which acts on any occurance of symbol when applied to an expression.

pub fn get(&self, name: &str) -> Option<Arc<dyn Macro>>

Retrieves the macro bound to symbol

pub fn get_capabilities<T>(&self, thread: &Thread) -> Vec<T> where
    T: Any, 

pub fn get_capability<T>(&self, thread: &Thread) -> Option<T> where
    T: Any, 

pub fn clear(&self)

pub fn run(
    &self,
    vm: &Thread,
    user_data: &dyn Any,
    symbols: &mut Symbols,
    expr: &mut SpannedExpr<Symbol>
) -> Result<(), Errors>

Runs the macros in this MacroEnv on expr using env as the context of the expansion

Trait Implementations

impl Trace for MacroEnv

unsafe fn root(&mut self)

unsafe fn unroot(&mut self)

fn trace(&self, gc: &mut Gc)

impl Default for MacroEnv

fn default() -> MacroEnv

Returns the "default value" for a type.