2 use rustc_hir::def_id::LocalDefId;
3 use rustc_middle::ty::query::Providers;
4 use rustc_middle::ty::TyCtxt;
5 use rustc_span::symbol::sym;
7 fn proc_macro_decls_static(tcx: TyCtxt<'_>, (): ()) -> Option<LocalDefId> {
8 let mut finder = Finder { tcx, decls: None };
10 for id in tcx.hir().items() {
11 let attrs = finder.tcx.hir().attrs(id.hir_id());
12 if finder.tcx.sess.contains_name(attrs, sym::rustc_proc_macro_decls) {
13 finder.decls = Some(id.def_id);
22 decls: Option<hir::def_id::LocalDefId>,
25 pub(crate) fn provide(providers: &mut Providers) {
26 *providers = Providers { proc_macro_decls_static, ..*providers };