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#include <unittest/unittest.h>
#include <thrust/detail/static_assert.h>
#include <iterator>
#include <vector>
#if THRUST_CPP_DIALECT >= 2011
#include <array>
#include <unordered_map>
#include <unordered_set>
#endif
#include <string>
#if THRUST_CPP_DIALECT >= 2017
#include <string_view>
#endif
#include <deque>
#include <list>
#include <map>
#include <set>
#include <thrust/device_ptr.h>
#include <thrust/host_vector.h>
#include <thrust/device_vector.h>
#include <thrust/type_traits/is_contiguous_iterator.h>
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
std::string::iterator
>::value));
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
std::wstring::iterator
>::value));
#if THRUST_CPP_DIALECT >= 2017
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
std::string_view::iterator
>::value));
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
std::wstring_view::iterator
>::value));
#endif
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
std::vector<bool>::iterator
>::value));
template <typename T>
__host__
void test_is_contiguous_iterator()
{
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
T*
>::value));
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
T const*
>::value));
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
thrust::device_ptr<T>
>::value));
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
typename std::vector<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::vector<T>::reverse_iterator
>::value));
#if THRUST_CPP_DIALECT >= 2011
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
typename std::array<T, 1>::iterator
>::value));
#endif
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::list<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::deque<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::set<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::multiset<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::map<T, T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::multimap<T, T>::iterator
>::value));
#if THRUST_CPP_DIALECT >= 2011
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::unordered_set<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::unordered_multiset<T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::unordered_map<T, T>::iterator
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
typename std::unordered_multimap<T, T>::iterator
>::value));
#endif
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
std::istream_iterator<T>
>::value));
THRUST_STATIC_ASSERT((!thrust::is_contiguous_iterator<
std::ostream_iterator<T>
>::value));
}
DECLARE_GENERIC_UNITTEST(test_is_contiguous_iterator);
template <typename Vector>
__host__
void test_is_contiguous_iterator_vectors()
{
THRUST_STATIC_ASSERT((thrust::is_contiguous_iterator<
typename Vector::iterator
>::value));
}
DECLARE_VECTOR_UNITTEST(test_is_contiguous_iterator_vectors);
struct expect_pointer{};
struct expect_passthrough{};
template <typename IteratorT,
typename PointerT,
typename expected_unwrapped_type /* = expect_[pointer|passthrough] */>
struct check_unwrapped_iterator
{
using unwrapped_t = typename std::remove_reference<
decltype(thrust::detail::try_unwrap_contiguous_iterator(
std::declval<IteratorT>()))>::type;
static constexpr bool value =
std::is_same<expected_unwrapped_type, expect_pointer>::value
? std::is_same<unwrapped_t, PointerT>::value
: std::is_same<unwrapped_t, IteratorT>::value;
};
template <typename T>
void test_try_unwrap_contiguous_iterator()
{
// Raw pointers should pass whether expecting pointers or passthrough.
THRUST_STATIC_ASSERT((check_unwrapped_iterator<T *,
T *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<T *,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<T const *,
T const *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<T const *,
T const *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<thrust::device_ptr<T>,
T *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<thrust::device_ptr<T const>,
T const *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::vector<T>::iterator,
T *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::vector<T>::reverse_iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::array<T, 1>::iterator,
T *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::array<T const, 1>::iterator,
T const *,
expect_pointer>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::list<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::deque<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::set<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::multiset<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::map<T, T>::iterator,
std::pair<T const, T> *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::multimap<T, T>::iterator,
std::pair<T const, T> *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::unordered_set<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::unordered_multiset<T>::iterator,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::unordered_map<T, T>::iterator,
std::pair<T const, T> *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<typename std::unordered_multimap<T, T>::iterator,
std::pair<T const, T> *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<std::istream_iterator<T>,
T *,
expect_passthrough>::value));
THRUST_STATIC_ASSERT((check_unwrapped_iterator<std::ostream_iterator<T>,
void,
expect_passthrough>::value));
}
DECLARE_GENERIC_UNITTEST(test_try_unwrap_contiguous_iterator);
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