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Support negative numbers in Literal::from_str

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David Tolnay 2021-07-08 20:24:29 -07:00
parent 331da5820c
commit 55ff45a5c2
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GPG key ID: F9BA143B95FF6D82
3 changed files with 57 additions and 23 deletions
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11
src/test/ui/proc-macro/auxiliary/api/parse.rs
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@ -1,9 +1,15 @@
use proc_macro::Literal;
pub fn test() {
test_display_literal();
test_parse_literal();
}
fn test_display_literal() {
assert_eq!(Literal::isize_unsuffixed(-10).to_string(), "- 10");
assert_eq!(Literal::isize_suffixed(-10).to_string(), "- 10isize");
}
fn test_parse_literal() {
assert_eq!("1".parse::<Literal>().unwrap().to_string(), "1");
assert_eq!("1.0".parse::<Literal>().unwrap().to_string(), "1.0");
@ -12,7 +18,10 @@ fn test_parse_literal() {
assert_eq!("b\"\"".parse::<Literal>().unwrap().to_string(), "b\"\"");
assert_eq!("r##\"\"##".parse::<Literal>().unwrap().to_string(), "r##\"\"##");
assert_eq!("10ulong".parse::<Literal>().unwrap().to_string(), "10ulong");
assert_eq!("-10ulong".parse::<Literal>().unwrap().to_string(), "- 10ulong");
assert!("true".parse::<Literal>().is_err());
assert!(".8".parse::<Literal>().is_err());
assert!("0 1".parse::<Literal>().is_err());
assert!("'a".parse::<Literal>().is_err());
assert!(" 0".parse::<Literal>().is_err());
@ -20,4 +29,6 @@ fn test_parse_literal() {
assert!("/* comment */0".parse::<Literal>().is_err());
assert!("0/* comment */".parse::<Literal>().is_err());
assert!("0// comment".parse::<Literal>().is_err());
assert!("- 10".parse::<Literal>().is_err());
assert!("-'x'".parse::<Literal>().is_err());
}