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// Range v3 library
//
// Copyright Eric Niebler 2014-present
//
// Use, modification and distribution is subject to the
// Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Project home: https://github.com/ericniebler/range-v3
#include <functional>
#include <iterator>
#include <range/v3/core.hpp>
#include <range/v3/utility/copy.hpp>
#include <range/v3/view/counted.hpp>
#include <range/v3/view/partial_sum.hpp>
#include <range/v3/view/reverse.hpp>
#include "../simple_test.hpp"
#include "../test_utils.hpp"
int main()
{
using namespace ranges;
int rgi[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
{
auto rng = rgi | views::partial_sum;
has_type<int &>(*begin(rgi));
has_type<int>(*begin(rng));
CPP_assert(view_<decltype(rng)>);
CPP_assert(sized_range<decltype(rng)>);
CPP_assert(forward_range<decltype(rng)>);
CPP_assert(!bidirectional_range<decltype(rng)>);
::check_equal(rng, {1, 3, 6, 10, 15, 21, 28, 36, 45, 55});
auto it = begin(rng);
CHECK(*it == 1);
auto it2 = next(it);
CHECK(*it == 1);
CHECK(*it2 == 3);
it2 = it;
CHECK(*it2 == 1);
++it2;
CHECK(*it2 == 3);
}
{
// Test partial_sum with a mutable lambda
int cnt = 0;
auto mutable_rng = views::partial_sum(rgi, [cnt](int i, int j) mutable { return i + j + cnt++;});
::check_equal(mutable_rng, {1, 3, 7, 13, 21, 31, 43, 57, 73, 91});
CHECK(cnt == 0);
CPP_assert(view_<decltype(mutable_rng)>);
CPP_assert(!view_<decltype(mutable_rng) const>);
}
{
auto rng = debug_input_view<int const>{rgi} | views::partial_sum;
::check_equal(rng, {1, 3, 6, 10, 15, 21, 28, 36, 45, 55});
}
{
static int const some_ints[] = {0,1,2,3,4};
auto t1 = ranges::views::partial_sum(some_ints);
auto t2 = some_ints | ranges::views::partial_sum;
::check_equal(t1, t2);
}
return test_result();
}
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