Replace unicode with byte

Author: lucic71

cpp2rust/converter/converter.cpp

@@ -1707,9 +1707,8 @@ bool Converter::VisitFloatingLiteral(clang::FloatingLiteral *expr) {
 
 bool Converter::VisitCharacterLiteral(clang::CharacterLiteral *expr) {
   auto uc = static_cast<unsigned char>(expr->getValue());
-  std::string ch = uc > 0x7F
-                       ? std::format("'\\u{{{:x}}}'", uc)
-                       : "'" + GetEscapedCharLiteral(expr->getValue()) + "'";
+  std::string ch = GetEscapedCharLiteral(expr->getValue());
+  ch = (uc > 0x7F ? "b'" : "'") + std::move(ch) + "'";
   {
     PushParen paren(*this);
     StrCat(ch, keyword::kAs, ToStringBase(expr->getType()));

tests/unit/out/refcount/string_escape.rs

@@ -55,7 +55,7 @@ fn main_0() -> i32 {
             124_u8,
             125_u8,
             126_u8,
-            ('\u{ff}' as u8),
+            (b'\xff' as u8),
         ])));
     );
     let i: Value<i32> = Rc::new(RefCell::new(0));

tests/unit/out/unsafe/string_escape.rs

@@ -56,7 +56,7 @@ unsafe fn main_0() -> i32 {
             124_u8,
             125_u8,
             126_u8,
-            ('\u{ff}' as u8),
+            (b'\xff' as u8),
         ]
     };;
     let mut i: i32 = 0;