1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <locale>
10 
11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
12 
13 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
14 
15 // size_t converted() const;
16 
17 // XFAIL: no-wide-characters
18 
19 #include <locale>
20 #include <codecvt>
21 #include <cassert>
22 
23 #include "test_macros.h"
24 
25 template <class CharT, size_t = sizeof(CharT)>
26 struct TestHelper;
27 template <class CharT>
28 struct TestHelper<CharT, 2> {
29   static void test();
30 };
31 template <class CharT>
32 struct TestHelper<CharT, 4> {
33   static void test();
34 };
35 
36 template <class CharT>
37 void TestHelper<CharT, 2>::test() {
38   static_assert((std::is_same<CharT, wchar_t>::value), "");
39   {
40     typedef std::codecvt_utf8<CharT> Codecvt;
41     typedef std::wstring_convert<Codecvt> Myconv;
42     Myconv myconv;
43     assert(myconv.converted() == 0);
44     std::string bs = myconv.to_bytes(L"\u1005");
45     assert(myconv.converted() == 1);
46     bs = myconv.to_bytes(L"\u1005e");
47     assert(myconv.converted() == 2);
48     std::wstring ws = myconv.from_bytes("\xE1\x80\x85");
49     assert(myconv.converted() == 3);
50   }
51 }
52 
53 template <class CharT>
54 void TestHelper<CharT, 4>::test() {
55   static_assert((std::is_same<CharT, wchar_t>::value), "");
56   {
57     typedef std::codecvt_utf8<CharT> Codecvt;
58     typedef std::wstring_convert<Codecvt> Myconv;
59     Myconv myconv;
60     assert(myconv.converted() == 0);
61     std::string bs = myconv.to_bytes(L"\U00040003");
62     assert(myconv.converted() == 1);
63     bs = myconv.to_bytes(L"\U00040003e");
64     assert(myconv.converted() == 2);
65     std::wstring ws = myconv.from_bytes("\xF1\x80\x80\x83");
66     assert(myconv.converted() == 4);
67   }
68 }
69 
70 int main(int, char**) {
71   TestHelper<wchar_t>::test();
72   return 0;
73 }
74