Trait syntax::ext::base::TTMacroExpanderUnstable

pub trait TTMacroExpander {
    fn expand<'cx>(&self, ecx: &'cx mut ExtCtxt, span: Span, token_tree: &[TokenTree]) -> Box<MacResult + 'cx>;
}

Represents a thing that maps token trees to Macro Results

Required Methods

fn expand<'cx>(&self, ecx: &'cx mut ExtCtxt, span: Span, token_tree: &[TokenTree]) -> Box<MacResult + 'cx>

Implementors

• impl<F> TTMacroExpander for F where F: for<'cx> Fn(&'cx mut ExtCtxt, Span, &[TokenTree]) -> Box<MacResult + 'cx>