154     let mut trees = TokenStreamBuilder::new();  in token_stream()  localVariable
160         if let Ok((rest, ())) = doc_comment(input, &mut trees) {  in token_stream()
171                 None => return Ok(trees.build()),  in token_stream()
190             let frame = (open_delimiter, trees);  in token_stream()
194             trees = TokenStreamBuilder::new();  in token_stream()
212             let mut g = Group::new(open_delimiter, trees.build());  in token_stream()
219             trees = outer;  in token_stream()
220             trees.push_token_from_parser(TokenTree::Group(crate::Group::_new_fallback(g)));  in token_stream()
232             trees.push_token_from_parser(tt);  in token_stream()
794 fn doc_comment<'a>(input: Cursor<'a>, trees: &mut TokenStreamBuilder) -> PResult<'a, ()> {  in doc_comment()
816     trees.push_token_from_parser(TokenTree::Punct(pound));  in doc_comment()
821         trees.push_token_from_parser(TokenTree::Punct(bang));  in doc_comment()
836     trees.push_token_from_parser(TokenTree::Group(group));  in doc_comment()