Struct MacroCx 

pub struct MacroCx<'a> { /* private fields */ }

Expansion context passed to macros: the evaluation context, current phase, environment, expansion budget, and the active macro stack.

Implementations

impl<'a> MacroCx<'a>

pub fn new(cx: &'a mut Cx, phase: Phase) -> Self

Creates an expansion context with the default expansion limits.

pub fn with_limits( cx: &'a mut Cx, phase: Phase, limits: MacroExpansionLimits, ) -> Self

Creates an expansion context with explicit expansion limits.

pub fn phase(&self) -> Phase

Returns the phase the macro is being expanded in.

pub fn env(&self) -> &Env

Returns the environment captured for this expansion.

pub fn factory(&self) -> &dyn Factory

Returns the object factory of the underlying context.

pub fn quote_expr(&self, expr: Expr) -> Result<Value>

Quotes an expression into a value through the factory.

pub fn hygienic_symbol(&mut self, prefix: impl AsRef<str>) -> Symbol

Generates a fresh hygienic symbol scoped to the active macro.