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_sign(it: &mut token_stream::IntoIter) -> Option<char> {  in try_sign()
14     let peek = it.clone().next();  in try_sign()
17             let _ = it.next();  in try_sign()
24 pub(crate) fn try_literal(it: &mut token_stream::IntoIter) -> Option<String> {  in try_literal()
25     if let Some(TokenTree::Literal(literal)) = it.next() {  in try_literal()
32 pub(crate) fn try_string(it: &mut token_stream::IntoIter) -> Option<String> {  in try_string()
33     try_literal(it).and_then(|string| {  in try_string()
48 pub(crate) fn expect_ident(it: &mut token_stream::IntoIter) -> String {  in expect_ident()
49     try_ident(it).expect("Expected Ident")  in expect_ident()
52 pub(crate) fn expect_punct(it: &mut token_stream::IntoIter) -> char {  in expect_punct()
53     if let TokenTree::Punct(punct) = it.next().expect("Reached end of token stream for Punct") {  in expect_punct()
60 pub(crate) fn expect_string(it: &mut token_stream::IntoIter) -> String {  in expect_string()
61     try_string(it).expect("Expected string")  in expect_string()
64 pub(crate) fn expect_string_ascii(it: &mut token_stream::IntoIter) -> String {  in expect_string_ascii()
65     let string = try_string(it).expect("Expected string");  in expect_string_ascii()
70 pub(crate) fn expect_group(it: &mut token_stream::IntoIter) -> Group {  in expect_group()
71     if let TokenTree::Group(group) = it.next().expect("Reached end of token stream for Group") {  in expect_group()
78 pub(crate) fn expect_end(it: &mut token_stream::IntoIter) {  in expect_end()
79     if it.next().is_some() {  in expect_end()
124 pub(crate) fn expect_string_field(it: &mut token_stream::IntoIter, expected_name: &str) -> String {  in expect_string_field()
125     assert_eq!(expect_ident(it), expected_name);  in expect_string_field()
126     assert_eq!(expect_punct(it), ':');  in expect_string_field()
127     let string = expect_string(it);  in expect_string_field()
128     assert_eq!(expect_punct(it), ',');  in expect_string_field()