Struct Macro 

pub struct Macro {
    pub params: Vec<Spur>,
    pub rest_param: Option<Spur>,
    pub body: Vec<Value>,
    pub name: Spur,
    pub syntax_rules: Option<Rc<SyntaxRules>>,
}

A macro definition.

A procedural defmacro uses params/rest_param/body and leaves syntax_rules as None. An R7RS (define-syntax name (syntax-rules ...)) leaves the procedural fields empty and carries its transformer in syntax_rules. Both share TAG_MACRO so env lookup, display, and GC tracing treat them uniformly.

Fields

params: Vec<Spur>

rest_param: Option<Spur>

body: Vec<Value>

name: Spur

syntax_rules: Option<Rc<SyntaxRules>>

Some for a syntax-rules transformer; None for procedural macros.

Trait Implementations

impl Clone for Macro

fn clone(&self) -> Macro

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Macro

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.