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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_range;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::output_iterator_wrapper;
using __gnu_test::forward_iterator_wrapper;
namespace ranges = std::ranges;
template<template<typename> typename source_wrapper,
template<typename> typename dest_wrapper>
void
test01()
{
int x[6] = {0, 0, 0, 1, 1, 1};
int y[2];
const int z[2] = {0, 1};
test_range<int, source_wrapper> rx(x);
test_range<int, dest_wrapper> ry(y);
auto [in,out] = ranges::unique_copy(rx, ry.begin());
VERIFY( in == ranges::end(rx) && out == ranges::end(ry) );
VERIFY( ranges::equal(y, z) );
}
template<template<typename> typename source_wrapper,
template<typename> typename dest_wrapper>
void
test02()
{
int x[6] = {0, 0, 0, 1, 1, 1};
int y[2] = {0, 0};
const int z[2] = {0, 0};
test_range<int, source_wrapper> rx(x, x);
test_range<int, dest_wrapper> ry(y, y);
auto [in, out] = ranges::unique_copy(rx.begin(), rx.end(), ry.begin());
VERIFY( in.ptr == x && out.ptr == y );
VERIFY( ranges::equal(y, z) );
}
template<template<typename> typename source_wrapper,
template<typename> typename dest_wrapper>
void
test03()
{
struct X { int i; };
X x[6] = { {1}, {2}, {2}, {4}, {4}, {6} };
X y[4] = { {1}, {2}, {4}, {6} };
const X z[4] = { {1}, {2}, {4}, {6} };
test_range<X, source_wrapper> rx(x);
test_range<X, dest_wrapper> ry(y);
auto [in, out]
= ranges::unique_copy(rx, ry.begin(), ranges::equal_to{}, &X::i);
VERIFY( in == ranges::end(rx) && out == ranges::end(ry) );
VERIFY( ranges::equal(y, z, {}, &X::i, &X::i) );
}
constexpr bool
test04()
{
struct X { int i; };
X x[7] = { {1}, {2}, {2}, {2}, {4}, {4}, {6} };
X y[4] = { {1}, {2}, {4}, {6} };
const X z[4] = { {1}, {2}, {4}, {6} };
auto [in, out]
= ranges::unique_copy(x, x+7, y, ranges::equal_to{}, &X::i);
return (in == ranges::end(x)
&& out == ranges::end(y)
&& ranges::equal(y, z, {}, &X::i, &X::i));
}
int
main()
{
test01<input_iterator_wrapper, output_iterator_wrapper>();
test01<input_iterator_wrapper, forward_iterator_wrapper>();
test01<forward_iterator_wrapper, output_iterator_wrapper>();
test02<input_iterator_wrapper, output_iterator_wrapper>();
test02<input_iterator_wrapper, forward_iterator_wrapper>();
test02<forward_iterator_wrapper, output_iterator_wrapper>();
test03<input_iterator_wrapper, output_iterator_wrapper>();
test03<input_iterator_wrapper, forward_iterator_wrapper>();
test03<forward_iterator_wrapper, output_iterator_wrapper>();
static_assert(test04());
}
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