src/test/ui/proc-macro/auxiliary/api/parse.rs

   1 // ignore-tidy-linelength
   2
   3 use proc_macro::Literal;
   4
   5 pub fn test() {
   6     test_display_literal();
   7     test_parse_literal();
   8 }
   9
  10 fn test_display_literal() {
  11     assert_eq!(Literal::isize_unsuffixed(-10).to_string(), "-10");
  12     assert_eq!(Literal::isize_suffixed(-10).to_string(), "-10isize");
  13     assert_eq!(Literal::f32_unsuffixed(-10.0).to_string(), "-10.0");
  14     assert_eq!(Literal::f32_suffixed(-10.0).to_string(), "-10f32");
  15     assert_eq!(Literal::f64_unsuffixed(-10.0).to_string(), "-10.0");
  16     assert_eq!(Literal::f64_suffixed(-10.0).to_string(), "-10f64");
  17     assert_eq!(
  18         Literal::f64_unsuffixed(1e100).to_string(),
  19         "10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0",
  20     );
  21
  22     assert_eq!(
  23         Literal::string("a \t ❤ ' \" \u{1}").to_string(),
  24         "\"a \\t ❤ ' \\\" \\u{1}\"",
  25     );
  26     assert_eq!(Literal::character('a').to_string(), "'a'");
  27     assert_eq!(Literal::character('\t').to_string(), "'\\t'");
  28     assert_eq!(Literal::character('❤').to_string(), "'❤'");
  29     assert_eq!(Literal::character('\'').to_string(), "'\\''");
  30     assert_eq!(Literal::character('"').to_string(), "'\"'");
  31     assert_eq!(Literal::character('\u{1}').to_string(), "'\\u{1}'");
  32 }
  33
  34 fn test_parse_literal() {
  35     assert_eq!("1".parse::<Literal>().unwrap().to_string(), "1");
  36     assert_eq!("1.0".parse::<Literal>().unwrap().to_string(), "1.0");
  37     assert_eq!("'a'".parse::<Literal>().unwrap().to_string(), "'a'");
  38     assert_eq!("\"\n\"".parse::<Literal>().unwrap().to_string(), "\"\n\"");
  39     assert_eq!("b\"\"".parse::<Literal>().unwrap().to_string(), "b\"\"");
  40     assert_eq!("r##\"\"##".parse::<Literal>().unwrap().to_string(), "r##\"\"##");
  41     assert_eq!("10ulong".parse::<Literal>().unwrap().to_string(), "10ulong");
  42     assert_eq!("-10ulong".parse::<Literal>().unwrap().to_string(), "-10ulong");
  43
  44     assert!("true".parse::<Literal>().is_err());
  45     assert!(".8".parse::<Literal>().is_err());
  46     assert!("0 1".parse::<Literal>().is_err());
  47     assert!("'a".parse::<Literal>().is_err());
  48     assert!(" 0".parse::<Literal>().is_err());
  49     assert!("0 ".parse::<Literal>().is_err());
  50     assert!("/* comment */0".parse::<Literal>().is_err());
  51     assert!("0/* comment */".parse::<Literal>().is_err());
  52     assert!("0// comment".parse::<Literal>().is_err());
  53     assert!("- 10".parse::<Literal>().is_err());
  54     assert!("-'x'".parse::<Literal>().is_err());
  55 }