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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <locale>
// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
// wide_string from_bytes(char byte);
// wide_string from_bytes(const char* ptr);
// wide_string from_bytes(const byte_string& str);
// wide_string from_bytes(const char* first, const char* last);
#include <locale>
#include <codecvt>
#include <cassert>
template <class CharT, size_t = sizeof(CharT)>
struct TestHelper;
template <class CharT>
struct TestHelper<CharT, 2> {
static void test();
};
template <class CharT>
struct TestHelper<CharT, 4> {
static void test();
};
template <class CharT>
void TestHelper<CharT, 2>::test() {
static_assert((std::is_same<CharT, wchar_t>::value), "");
{
std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
std::string bs("\xE1\x80\x85\x00");
std::wstring ws = myconv.from_bytes('a');
assert(ws == L"a");
ws = myconv.from_bytes(bs.c_str());
assert(ws == L"\x1005");
ws = myconv.from_bytes(bs);
assert(ws == L"\x1005");
ws = myconv.from_bytes(bs.data(), bs.data() + bs.size());
assert(ws == L"\x1005");
ws = myconv.from_bytes("");
assert(ws.size() == 0);
}
}
template <class CharT>
void TestHelper<CharT, 4>::test() {
static_assert((std::is_same<CharT, wchar_t>::value), "");
{
std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
std::string bs("\xF1\x80\x80\x83");
std::wstring ws = myconv.from_bytes('a');
assert(ws == L"a");
ws = myconv.from_bytes(bs.c_str());
assert(ws == L"\x40003");
ws = myconv.from_bytes(bs);
assert(ws == L"\x40003");
ws = myconv.from_bytes(bs.data(), bs.data() + bs.size());
assert(ws == L"\x40003");
ws = myconv.from_bytes("");
assert(ws.size() == 0);
}
}
int main() { TestHelper<wchar_t>::test(); }
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