llvm-project/libcxx/test/std/re/re.traits/translate.pass.cpp
Louis Dionne f4c1258d56 [libc++] Add an option to disable wide character support in libc++
Some embedded platforms do not wish to support the C library functionality
for handling wchar_t because they have no use for it. It makes sense for
libc++ to work properly on those platforms, so this commit adds a carve-out
of functionality for wchar_t.

Unfortunately, unlike some other carve-outs (e.g. random device), this
patch touches several parts of the library. However, despite the wide
impact of this patch, I still think it is important to support this
configuration since it makes it much simpler to port libc++ to some
embedded platforms.

Differential Revision: https://reviews.llvm.org/D111265
2021-10-12 06:08:23 -04:00

38 lines
959 B
C++

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <regex>
// template <class charT> struct regex_traits;
// charT translate(charT c) const;
#include <regex>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
{
std::regex_traits<char> t;
assert(t.translate('a') == 'a');
assert(t.translate('B') == 'B');
assert(t.translate('c') == 'c');
}
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
{
std::regex_traits<wchar_t> t;
assert(t.translate(L'a') == L'a');
assert(t.translate(L'B') == L'B');
assert(t.translate(L'c') == L'c');
}
#endif
return 0;
}