127 lines
2.7 KiB
C++
127 lines
2.7 KiB
C++
// Copyright (C) 2018-2019 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 <numeric>
|
|
#include <iterator>
|
|
#include <testsuite_hooks.h>
|
|
|
|
struct Int
|
|
{
|
|
Int(int v) : val(v) { }
|
|
|
|
~Int() = default;
|
|
|
|
Int(const Int& x) : val(x.val), copies(x.copies), moved_from(x.moved_from)
|
|
{ ++copies; }
|
|
|
|
Int(Int&& x) : val(x.val), copies(x.copies), moved_from(x.moved_from)
|
|
{ x.moved_from = true; }
|
|
|
|
Int& operator=(const Int& x)
|
|
{
|
|
val = x.val;
|
|
copies = x.copies + 1;
|
|
moved_from = x.moved_from;
|
|
return *this;
|
|
}
|
|
|
|
Int& operator=(Int&& x)
|
|
{
|
|
val = x.val;
|
|
copies = x.copies;
|
|
moved_from = x.moved_from;
|
|
x.moved_from = true;
|
|
return *this;
|
|
}
|
|
|
|
int val = 0;
|
|
int copies = 0;
|
|
bool moved_from = false;
|
|
};
|
|
|
|
Int operator-(Int x, Int y) { x.val -= y.val; return x; }
|
|
|
|
struct Subtract
|
|
{
|
|
Int operator()(Int x, Int y) const { x.val -= y.val; return x; }
|
|
};
|
|
|
|
void
|
|
test01()
|
|
{
|
|
Int i[] = { 0, 1, 2, 3, 4 };
|
|
std::adjacent_difference(std::begin(i), std::end(i), std::begin(i));
|
|
for (const auto& r : i)
|
|
{
|
|
VERIFY( r.copies == 2 );
|
|
VERIFY( !r.moved_from );
|
|
}
|
|
}
|
|
|
|
void
|
|
test02()
|
|
{
|
|
Int i[] = { 0, 1, 2, 3, 4 };
|
|
std::adjacent_difference(std::begin(i), std::end(i), std::begin(i),
|
|
Subtract{});
|
|
for (const auto& r : i)
|
|
{
|
|
VERIFY( r.copies == 2 );
|
|
VERIFY( !r.moved_from );
|
|
}
|
|
}
|
|
|
|
void
|
|
test03()
|
|
{
|
|
Int i[] = { 0, 1, 2, 3, 4 };
|
|
std::adjacent_difference(std::make_move_iterator(std::begin(i)),
|
|
std::make_move_iterator(std::end(i)),
|
|
std::begin(i));
|
|
for (const auto& r : i)
|
|
{
|
|
VERIFY( r.copies == 1 );
|
|
VERIFY( !r.moved_from );
|
|
}
|
|
}
|
|
|
|
void
|
|
test04()
|
|
{
|
|
Int i[] = { 0, 1, 2, 3, 4 };
|
|
std::adjacent_difference(std::make_move_iterator(std::begin(i)),
|
|
std::make_move_iterator(std::end(i)),
|
|
std::begin(i), Subtract{});
|
|
for (const auto& r : i)
|
|
{
|
|
VERIFY( r.copies == 1 );
|
|
VERIFY( !r.moved_from );
|
|
}
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
test01();
|
|
test02();
|
|
test03();
|
|
test04();
|
|
}
|