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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 <vector>
#include <range/v3/core.hpp>
#include <range/v3/utility/copy.hpp>
#include "../simple_test.hpp"
#include "../test_utils.hpp"
struct MyRange
: ranges::view_facade<MyRange>
{
private:
friend ranges::range_access;
std::vector<int> ints_;
struct cursor
{
private:
std::vector<int>::const_iterator iter;
public:
using contiguous = std::true_type;
cursor() = default;
cursor(std::vector<int>::const_iterator it)
: iter(it)
{}
int const & read() const
{
return *iter;
}
bool equal(cursor const &that) const
{
return iter == that.iter;
}
void next()
{
++iter;
}
void prev()
{
--iter;
}
std::ptrdiff_t distance_to(cursor const &that) const
{
return that.iter - iter;
}
void advance(std::ptrdiff_t n)
{
iter += n;
}
};
cursor begin_cursor() const
{
return {ints_.begin()};
}
cursor end_cursor() const
{
return {ints_.end()};
}
public:
MyRange()
: ints_{1, 2, 3, 4, 5, 6, 7}
{}
};
int main()
{
using namespace ranges;
{
auto r = MyRange{};
CPP_assert(view_<decltype(r)>);
CPP_assert(common_range<decltype(r)>);
CPP_assert(sized_range<decltype(r)>);
CPP_assert(contiguous_range<decltype(r)>);
::check_equal(r, {1, 2, 3, 4, 5, 6, 7});
CHECK(7u == r.size());
CHECK(1 == r.front());
CHECK(7 == r.back());
CHECK(&*r.begin() == r.data());
CHECK(r[1] == 2);
CHECK(r[5] == 6);
}
{
const auto r = MyRange{};
CPP_assert(common_range<decltype(r)>);
CPP_assert(sized_range<decltype(r)>);
CPP_assert(random_access_range<decltype(r)>);
CPP_assert(contiguous_range<decltype(r)>);
::check_equal(r, {1, 2, 3, 4, 5, 6, 7});
CHECK(7u == r.size());
CHECK(1 == r.front());
CHECK(7 == r.back());
CHECK(&*r.begin() == r.data());
CHECK(r[1] == 2);
CHECK(r[5] == 6);
}
return test_result();
}
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