Macro rustc_query_impl::plumbing::call_provider
source ยท macro_rules! call_provider { ([][$tcx:expr, $name:ident, $key:expr]) => { ... }; ([(separate_provide_extern) $($rest:tt)*][$tcx:expr, $name:ident, $key:expr]) => { ... }; ([$other:tt $($modifiers:tt)*][$($args:tt)*]) => { ... }; }