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/*
Copyright 2019-2023 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#ifdef __cpp_deduction_guides
#include <boost/core/span.hpp>
#include <boost/core/lightweight_test.hpp>
template<class T>
class range {
public:
T* data() {
return &v_[0];
}
std::size_t size() const {
return 4;
}
private:
T v_[4];
};
void test_data_size()
{
int a[4];
boost::span s(&a[0], 4);
BOOST_TEST_EQ(s.extent, boost::dynamic_extent);
BOOST_TEST_EQ(s.data(), &a[0]);
BOOST_TEST_EQ(s.size(), 4);
}
void test_first_last()
{
int a[4];
boost::span s(&a[0], &a[4]);
BOOST_TEST_EQ(s.extent, boost::dynamic_extent);
BOOST_TEST_EQ(s.data(), &a[0]);
BOOST_TEST_EQ(s.size(), 4);
}
void test_array()
{
int a[4];
boost::span s(a);
BOOST_TEST_EQ(s.extent, 4);
BOOST_TEST_EQ(s.data(), &a[0]);
BOOST_TEST_EQ(s.size(), 4);
}
void test_std_array()
{
std::array<int, 4> a;
boost::span s(a);
BOOST_TEST_EQ(s.extent, 4);
BOOST_TEST_EQ(s.data(), a.data());
BOOST_TEST_EQ(s.size(), a.size());
}
void test_const_std_array()
{
const std::array<int, 4> a = std::array<int, 4>();
boost::span s(a);
BOOST_TEST_EQ(s.extent, 4);
BOOST_TEST_EQ(s.data(), a.data());
BOOST_TEST_EQ(s.size(), a.size());
}
void test_range()
{
range<int> c;
boost::span s(c);
BOOST_TEST_EQ(s.extent, boost::dynamic_extent);
BOOST_TEST_EQ(s.data(), c.data());
BOOST_TEST_EQ(s.size(), c.size());
}
void test_initializer_list()
{
std::initializer_list<int> l{1, 2};
boost::span s(l);
BOOST_TEST_EQ(s.extent, boost::dynamic_extent);
BOOST_TEST_EQ(s.data(), l.begin());
BOOST_TEST_EQ(s.size(), l.size());
}
void test_span_dynamic()
{
int a[4];
boost::span s(boost::span<int>(&a[0], 4));
BOOST_TEST_EQ(s.extent, boost::dynamic_extent);
BOOST_TEST_EQ(s.data(), &a[0]);
BOOST_TEST_EQ(s.size(), 4);
}
void test_span_static()
{
int a[4];
boost::span s(boost::span<int, 4>(&a[0], 4));
BOOST_TEST_EQ(s.extent, 4);
BOOST_TEST_EQ(s.data(), &a[0]);
BOOST_TEST_EQ(s.size(), 4);
}
int main()
{
test_data_size();
test_first_last();
test_array();
test_std_array();
test_const_std_array();
test_range();
test_initializer_list();
test_span_dynamic();
test_span_static();
return boost::report_errors();
}
#else
int main()
{
return 0;
}
#endif
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