Struct gluon_vm::macros::MacroEnv

pub struct MacroEnv { /* private fields */ }

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

Implementations

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 async fn run<'ast>( &self, vm: &Thread, userdata: &mut (dyn MacroUserdata + '_), spawn: Option<&(dyn Spawn + Send + Sync + '_)>, symbols: &mut Symbols, arena: OwnedArena<'ast, Symbol>, expr: &'ast mut SpannedExpr<'ast, Symbol> ) -> Result<(), Errors>

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

Trait Implementations

impl Default for MacroEnv

fn default() -> MacroEnv

Returns the “default value” for a type.

impl Trace for MacroEnv

unsafe fn root(&mut self)

unsafe fn unroot(&mut self)

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