871                 if let Some((lit, rest)) = cursor.literal() {  in parse()
872                     return Ok((Lit::new(lit), rest));  in parse()
875                 if let Some((ident, rest)) = cursor.ident() {  in parse()
882                         return Ok((Lit::Bool(lit_bool), rest));  in parse()
886                 if let Some((punct, rest)) = cursor.punct() {  in parse()
888                         if let Some((lit, rest)) = parse_negative_lit(punct, rest) {  in parse()
889                             return Ok((lit, rest));  in parse()
900         let (lit, rest) = cursor.literal()?;  in parse_negative_lit()
919                 rest,  in parse_negative_lit()
934             rest,  in parse_negative_lit()
1299                             let (byte, rest) = backslash_x(s);  in parse_lit_str_cooked()
1300                             s = rest;  in parse_lit_str_cooked()
1305                             let (ch, rest) = backslash_u(s);  in parse_lit_str_cooked()
1306                             s = rest;  in parse_lit_str_cooked()
1395                             let (b, rest) = backslash_x(v);  in parse_lit_byte_str_cooked()
1396                             v = rest;  in parse_lit_byte_str_cooked()
1471                             let (b, rest) = backslash_x(v);  in parse_lit_c_str_cooked()
1473                             v = rest;  in parse_lit_c_str_cooked()
1477                             let (ch, rest) = backslash_u(v);  in parse_lit_c_str_cooked()
1479                             v = rest;  in parse_lit_c_str_cooked()
1541                         let (b, rest) = backslash_x(v);  in parse_lit_byte()
1542                         v = rest;  in parse_lit_byte()
1580                         let (byte, rest) = backslash_x(s);  in parse_lit_char()
1581                         s = rest;  in parse_lit_char()
1586                         let (ch, rest) = backslash_u(s);  in parse_lit_char()
1587                         s = rest;  in parse_lit_char()