1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <locale>
11
12 // template <> class codecvt<wchar_t, char, mbstate_t>
13
14 // result in(stateT& state,
15 // const externT* from, const externT* from_end, const externT*& from_next,
16 // internT* to, internT* to_end, internT*& to_next) const;
17
18 #include <locale>
19 #include <string>
20 #include <vector>
21 #include <cassert>
22
23 typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
24
main()25 int main()
26 {
27 std::locale l = std::locale::classic();
28 const std::basic_string<F::extern_type> from("some text");
29 const std::basic_string<F::intern_type> expected(from.begin(), from.end());
30 std::basic_string<F::intern_type> to(from.size(), F::intern_type());
31 const F& f = std::use_facet<F>(l);
32 std::mbstate_t mbs = {0};
33 const F::extern_type* from_next = 0;
34 F::intern_type* to_next = 0;
35 F::result r = f.in(mbs, from.data(), from.data() + from.size(), from_next,
36 &to[0], &to[0] + to.size(), to_next);
37 assert(r == F::ok);
38 assert(from_next - from.data() == from.size());
39 assert(to_next - to.data() == expected.size());
40 assert(to_next - to.data() == expected.size());
41 assert(to == expected);
42 }
43