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[rustc.git] / 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
23 fn test_parse_literal() {
24 assert_eq!("1".parse::<Literal>().unwrap().to_string(), "1");
25 assert_eq!("1.0".parse::<Literal>().unwrap().to_string(), "1.0");
26 assert_eq!("'a'".parse::<Literal>().unwrap().to_string(), "'a'");
27 assert_eq!("\"\n\"".parse::<Literal>().unwrap().to_string(), "\"\n\"");
28 assert_eq!("b\"\"".parse::<Literal>().unwrap().to_string(), "b\"\"");
29 assert_eq!("r##\"\"##".parse::<Literal>().unwrap().to_string(), "r##\"\"##");
30 assert_eq!("10ulong".parse::<Literal>().unwrap().to_string(), "10ulong");
31 assert_eq!("-10ulong".parse::<Literal>().unwrap().to_string(), "-10ulong");
32
33 assert!("true".parse::<Literal>().is_err());
34 assert!(".8".parse::<Literal>().is_err());
35 assert!("0 1".parse::<Literal>().is_err());
36 assert!("'a".parse::<Literal>().is_err());
37 assert!(" 0".parse::<Literal>().is_err());
38 assert!("0 ".parse::<Literal>().is_err());
39 assert!("/* comment */0".parse::<Literal>().is_err());
40 assert!("0/* comment */".parse::<Literal>().is_err());
41 assert!("0// comment".parse::<Literal>().is_err());
42 assert!("- 10".parse::<Literal>().is_err());
43 assert!("-'x'".parse::<Literal>().is_err());
44 }