rustc_expand::mbe::transcribe

Function metavar_expr_concat

Source 
fn metavar_expr_concat<'tx>(
    tscx: &mut TranscrCtx<'tx, '_>,
    dspan: DelimSpan,
    elements: &[MetaVarExprConcatElem],
) -> PResult<'tx, TokenTree>
Expand description

Handle the ${concat(...)} metavariable expression.