5 pub(crate) fn try_ident(it: &mut token_stream::IntoIter) -> Option<String> {  in try_ident()
6     if let Some(TokenTree::Ident(ident)) = it.next() {  in try_ident()
13 pub(crate) fn try_literal(it: &mut token_stream::IntoIter) -> Option<String> {  in try_literal()
14     if let Some(TokenTree::Literal(literal)) = it.next() {  in try_literal()
21 pub(crate) fn try_byte_string(it: &mut token_stream::IntoIter) -> Option<String> {  in try_byte_string()
22     try_literal(it).and_then(|byte_string| {  in try_byte_string()
31 pub(crate) fn expect_ident(it: &mut token_stream::IntoIter) -> String {  in expect_ident()
32     try_ident(it).expect("Expected Ident")  in expect_ident()
35 pub(crate) fn expect_punct(it: &mut token_stream::IntoIter) -> char {  in expect_punct()
36     if let TokenTree::Punct(punct) = it.next().expect("Reached end of token stream for Punct") {  in expect_punct()
43 pub(crate) fn expect_byte_string(it: &mut token_stream::IntoIter) -> String {  in expect_byte_string()
44     try_byte_string(it).expect("Expected byte string")  in expect_byte_string()
47 pub(crate) fn expect_end(it: &mut token_stream::IntoIter) {  in expect_end()
48     if it.next().is_some() {  in expect_end()