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fix printing signed literal in print_literal

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This commit is contained in:
Aleksandr Koshlo
2014-10-19 18:39:39 +03:00
parent c121cbab35
commit 49ec356c60
1 changed files with 10 additions and 1 deletions
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src/libsyntax/print/pprust.rs
+10 -1
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@@ -2680,8 +2680,9 @@ pub fn print_literal(&mut self, lit: &ast::Lit) -> IoResult<()> {
ast_util::int_ty_to_string(st, Some(i as i64)).as_slice())
}
ast::SignedIntLit(st, ast::Minus) => {
let istr = ast_util::int_ty_to_string(st, Some(-(i as i64)));
word(&mut self.s,
ast_util::int_ty_to_string(st, Some(-(i as i64))).as_slice())
format!("-{}", istr).as_slice())
}
ast::UnsignedIntLit(ut) => {
word(&mut self.s, ast_util::uint_ty_to_string(ut, Some(i)).as_slice())
@@ -2930,4 +2931,12 @@ fn test_variant_to_string() {
let varstr = variant_to_string(&var);
assert_eq!(&varstr,&"pub principal_skinner".to_string());
}
#[test]
fn test_signed_int_to_string() {
let pos_int = ast::LitInt(42, ast::SignedIntLit(ast::TyI32, ast::Plus));
let neg_int = ast::LitInt((-42) as u64, ast::SignedIntLit(ast::TyI32, ast::Minus));
assert_eq!(format!("-{}", lit_to_string(&codemap::dummy_spanned(pos_int))),
lit_to_string(&codemap::dummy_spanned(neg_int)));
}
}