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<Macro>>

Retrieves the macro bound to symbol

pub fn run(     &self,     vm: &Thread,     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 Default for MacroEnv

fn default() -> MacroEnv

Returns the "default value" for a type.