syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"debug!(\"push_scope({:?})\","}]}
source_snippet:         debug!("push_scope({:?})", region_scope);
context_before:     fn push_scope(&mut self, region_scope: (region::Scope, SourceInfo), vis_scope: SourceScope) {
context_after:         self.scopes.push(Scope {