-/// A type which can be visited.
-pub trait Visitable<'tcx> {
- /// Calls the corresponding `visit_*` function on the visitor.
- fn visit<V: Visitor<'tcx>>(self, visitor: &mut V);
-}
-macro_rules! visitable_ref {
- ($t:ident, $f:ident) => {
- impl<'tcx> Visitable<'tcx> for &'tcx $t<'tcx> {
- fn visit<V: Visitor<'tcx>>(self, visitor: &mut V) {
- visitor.$f(self);
- }
- }
- };
-}
-visitable_ref!(Arm, visit_arm);
-visitable_ref!(Block, visit_block);
-visitable_ref!(Body, visit_body);
-visitable_ref!(Expr, visit_expr);
-visitable_ref!(Stmt, visit_stmt);
-
-// impl<'tcx, I: IntoIterator> Visitable<'tcx> for I
-// where
-// I::Item: Visitable<'tcx>,
-// {
-// fn visit<V: Visitor<'tcx>>(self, visitor: &mut V) {
-// for x in self {
-// x.visit(visitor);
-// }
-// }
-// }
-