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