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// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
13
14// byte_string to_bytes(Elem wchar);
15// byte_string to_bytes(const Elem* wptr);
16// byte_string to_bytes(const wide_string& wstr);
17// byte_string to_bytes(const Elem* first, const Elem* last);
18
19#include <locale>
20#include <codecvt>
21#include <cassert>
22
23template <class CharT, size_t = sizeof(CharT)>
24struct TestHelper;
25template <class CharT>
26struct TestHelper<CharT, 2> {
27  static void test();
28};
29template <class CharT>
30struct TestHelper<CharT, 4> {
31  static void test();
32};
33
34template <class CharT>
35void TestHelper<CharT, 2>::test() {
36  static_assert((std::is_same<CharT, wchar_t>::value), "");
37  {
38    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
39    std::wstring ws(1, CharT(0x1005));
40    std::string bs = myconv.to_bytes(ws[0]);
41    assert(bs == "\xE1\x80\x85\x00");
42    bs = myconv.to_bytes(ws.c_str());
43    assert(bs == "\xE1\x80\x85\x00");
44    bs = myconv.to_bytes(ws);
45    assert(bs == "\xE1\x80\x85\x00");
46    bs = myconv.to_bytes(ws.data(), ws.data() + ws.size());
47    assert(bs == "\xE1\x80\x85\x00");
48    bs = myconv.to_bytes(L"");
49    assert(bs.size() == 0);
50  }
51}
52
53template <class CharT>
54void TestHelper<CharT, 4>::test() {
55  static_assert((std::is_same<CharT, wchar_t>::value), "");
56  {
57    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
58    std::wstring ws(1, CharT(0x40003));
59    std::string bs = myconv.to_bytes(ws[0]);
60    assert(bs == "\xF1\x80\x80\x83");
61    bs = myconv.to_bytes(ws.c_str());
62    assert(bs == "\xF1\x80\x80\x83");
63    bs = myconv.to_bytes(ws);
64    assert(bs == "\xF1\x80\x80\x83");
65    bs = myconv.to_bytes(ws.data(), ws.data() + ws.size());
66    assert(bs == "\xF1\x80\x80\x83");
67    bs = myconv.to_bytes(L"");
68    assert(bs.size() == 0);
69  }
70}
71
72int main() { TestHelper<wchar_t>::test(); }
73