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// Copyright (C) 2019-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do compile { target c++20 } }
#include <functional>
#ifndef __cpp_lib_constexpr_functional
# error "Feature test macro for constexpr searcher is missing in <functional>"
#elif __cpp_lib_constexpr_functional < 201811L
# error "Feature test macro for constexpr searcher has wrong value in <functional>"
#endif
#include <string_view>
constexpr std::string_view
patt = "World";
constexpr std::string_view
greet = "Hello, Humongous World of Wonder!!!";
constexpr std::wstring_view
wpatt = L"World";
constexpr std::wstring_view
wgreet = L"Hello, Humongous World of Wonder!!!";
constexpr bool
test_searcher()
{
auto ok = true;
const std::default_searcher search(patt.begin(), patt.end(),
std::equal_to<>());
const auto find = search(greet.begin(), greet.end());
const std::default_searcher wsearch(wpatt.begin(), wpatt.end(),
std::equal_to<>());
const auto wfind = wsearch(wgreet.begin(), wgreet.end());
return ok;
}
static_assert(test_searcher());
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