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_string(it: &mut token_stream::IntoIter) -> Option<String> {  in try_string()
22     try_literal(it).and_then(|string| {  in try_string()
37 pub(crate) fn expect_ident(it: &mut token_stream::IntoIter) -> String {  in expect_ident()
38     try_ident(it).expect("Expected Ident")  in expect_ident()
41 pub(crate) fn expect_punct(it: &mut token_stream::IntoIter) -> char {  in expect_punct()
42     if let TokenTree::Punct(punct) = it.next().expect("Reached end of token stream for Punct") {  in expect_punct()
49 pub(crate) fn expect_string(it: &mut token_stream::IntoIter) -> String {  in expect_string()
50     try_string(it).expect("Expected string")  in expect_string()
53 pub(crate) fn expect_string_ascii(it: &mut token_stream::IntoIter) -> String {  in expect_string_ascii()
54     let string = try_string(it).expect("Expected string");  in expect_string_ascii()
59 pub(crate) fn expect_group(it: &mut token_stream::IntoIter) -> Group {  in expect_group()
60     if let TokenTree::Group(group) = it.next().expect("Reached end of token stream for Group") {  in expect_group()
67 pub(crate) fn expect_end(it: &mut token_stream::IntoIter) {  in expect_end()
68     if it.next().is_some() {  in expect_end()