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// Copyright (C) 2020-2023 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-options "-std=gnu++2a" }
// { dg-do run { target c++2a } }
#include <algorithm>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
using __gnu_test::test_container;
using __gnu_test::test_range;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::forward_iterator_wrapper;
using __gnu_test::bidirectional_iterator_wrapper;
namespace ranges = std::ranges;
struct X
{
int i;
int moved = 0;
constexpr X(int a) : i(a) { }
constexpr X(const X&) = delete;
constexpr X& operator=(const X&) = delete;
constexpr X(X&& other)
{
*this = std::move(other);
}
constexpr X&
operator=(X&& other)
{
other.moved++;
i = other.i;
return *this;
}
friend constexpr bool
operator==(const X& a, const X& b)
{ return a.i == b.i; }
};
void
test01()
{
{
X x[7] = { 1, 2, 3, 4, 5, 6, 7 };
X y[7] = { 2, 4, 3, 5, 8, 9, 1 };
X z[7] = { 1, 2, 3, 4, 5, 6, 7 };
X w[7] = { 2, 4, 3, 5, 8, 9, 1 };
auto [x_iter, y_iter] = ranges::swap_ranges(x, y);
VERIFY( ranges::equal(y, z) && x_iter == x+7 && y_iter == y+7 );
VERIFY( ranges::equal(x, w) );
}
{
int x[3] = { 1, 2, 3 };
int y[4] = { 2, 4, 6, 0 };
int z[3] = { 1, 2, 3 };
int w[3] = { 2, 4, 6 };
test_container<int, forward_iterator_wrapper> cx(x);
test_container<int, forward_iterator_wrapper> cy(y);
auto [x_iter, y_iter] = ranges::swap_ranges(cx, cy);
VERIFY( ranges::equal(y, y+3, z, z+3) );
VERIFY( x_iter.ptr == x+3 && y_iter.ptr == y+3 );
VERIFY( y[3] == 0 );
VERIFY( ranges::equal(x, w) );
}
{
int x[3] = { 1, 2, 3 };
int y[4] = { 2, 4, 6, 0 };
int z[3] = { 1, 2, 3 };
int w[3] = { 2, 4, 6 };
test_range<int, input_iterator_wrapper> cx(x);
test_range<int, input_iterator_wrapper> cy(y);
auto [y_iter, x_iter] = ranges::swap_ranges(cy, cx);
VERIFY( ranges::equal(y, y+3, z, z+3) );
VERIFY( x_iter.ptr == x+3 && y_iter.ptr == y+3 );
VERIFY( y[3] == 0 );
VERIFY( ranges::equal(x, w) );
}
}
constexpr bool
test02()
{
bool ok = true;
X x[7] = { 1, 2, 3, 4, 5, 6, 7 };
X y[7] = { 2, 4, 3, 5, 8, 9, 1 };
X z[7] = { 1, 2, 3, 4, 5, 6, 7 };
X w[7] = { 2, 4, 3, 5, 8, 9, 1 };
auto [x_iter, y_iter] = ranges::swap_ranges(x, y);
ok &= ranges::equal(y, z) && x_iter == x+7 && y_iter == y+7;
ok &= ranges::equal(x, w);
return ok;
}
int
main()
{
test01();
static_assert(test02());
}
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