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// Range v3 library
//
// Copyright Mitsutaka Takeda 2018-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 <vector>
#include <range/v3/utility/copy.hpp>
#include <range/v3/view/exclusive_scan.hpp>
#include "../test_utils.hpp"
int main()
{
using namespace ranges;
{// For non empty range.
int rgi[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
{
auto rng = rgi | views::exclusive_scan(0);
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, {0, 1, 3, 6, 10, 15, 21, 28, 36, 45});
}
{// Test exclusive_scan with a mutable lambda
int cnt = 0;
auto mutable_rng = views::exclusive_scan(rgi, 0, [cnt](int i, int j) mutable {return i + j + cnt++;});
::check_equal(mutable_rng, {0, 1, 4, 9, 16, 25, 36, 49, 64, 81});
CPP_assert(view_<decltype(mutable_rng)>);
CPP_assert(!view_<decltype(mutable_rng) const>);
}
}
{// For an empty range.
std::vector<int> rgi;
auto rng = rgi | views::exclusive_scan(0);
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(empty(rng));
}
return test_result();
}
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