From 49ec356c601b3c2fb6ff78df9e22786ec93d34f8 Mon Sep 17 00:00:00 2001 From: Aleksandr Koshlo Date: Sun, 19 Oct 2014 18:39:39 +0300 Subject: [PATCH] fix printing signed literal in print_literal --- src/libsyntax/print/pprust.rs | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs index d32828192e996..f654bc30680d5 100644 --- a/src/libsyntax/print/pprust.rs +++ b/src/libsyntax/print/pprust.rs @@ -2680,8 +2680,9 @@ impl<'a> State<'a> { 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 @@ mod test { 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))); + } }