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use rustc_ast::attr;
use rustc_hir::def_id::LocalDefId;
use rustc_middle::query::Providers;
use rustc_middle::ty::TyCtxt;
use rustc_span::sym;
fn proc_macro_decls_static(tcx: TyCtxt<'_>, (): ()) -> Option<LocalDefId> {
let mut decls = None;
for id in tcx.hir_free_items() {
let attrs = tcx.hir_attrs(id.hir_id());
if attr::contains_name(attrs, sym::rustc_proc_macro_decls) {
decls = Some(id.owner_id.def_id);
}
}
decls
}
pub(crate) fn provide(providers: &mut Providers) {
*providers = Providers { proc_macro_decls_static, ..*providers };
}
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