maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

LWG #2212 (not yet adopted) mandates that tuple_size/tuple_element are available if <array> or <utility> are included (not just <tuple>). We already do this. Add some tests to make sure that this remains true. 

llvm-svn: 220295
This commit is contained in:
Marshall Clow 2014-10-21 15:05:31 +00:00
parent c9b33ff9ba
commit 450d430f55
2 changed files with 101 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
libcxx/test/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.array.pass.cpp Normal file
View File

@ -0,0 +1,52 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template <size_t I, class... Types>
// class tuple_element<I, tuple<Types...> >
// {
// public:
// typedef Ti type;
// };
//
// LWG #2212 says that tuple_size and tuple_element must be
// available after including <utility>
#include <array>
#include <type_traits>
template <class T, std::size_t N, class U, size_t idx>
void test()
{
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<const T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<volatile T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<const volatile T> >::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, T>::type, U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, const T>::type, const U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, volatile T>::type, volatile U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, const volatile T>::type, const volatile U>::value), "");
}
int main()
{
test<std::array<int, 5>, 5, int, 0>();
test<std::array<int, 5>, 5, int, 1>();
test<std::array<const char *, 4>, 4, const char *, 3>();
test<std::array<volatile int, 4>, 4, volatile int, 3>();
test<std::array<char *, 3>, 3, char *, 1>();
test<std::array<char *, 3>, 3, char *, 2>();
}

49
libcxx/test/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.utility.pass.cpp Normal file
View File

@ -0,0 +1,49 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template <class... Types>
// class tuple_size<tuple<Types...>>
// : public integral_constant<size_t, sizeof...(Types)> { };
//
// LWG #2212 says that tuple_size and tuple_element must be
// available after including <utility>
#include <utility>
#include <type_traits>
template <class T, std::size_t N, class U, size_t idx>
void test()
{
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<const T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<volatile T> >::value), "");
static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
std::tuple_size<const volatile T> >::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, T>::type, U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, const T>::type, const U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, volatile T>::type, volatile U>::value), "");
static_assert((std::is_same<typename std::tuple_element<idx, const volatile T>::type, const volatile U>::value), "");
}
int main()
{
test<std::pair<int, int>, 2, int, 0>();
test<std::pair<int, int>, 2, int, 1>();
test<std::pair<const int, int>, 2, int, 1>();
test<std::pair<int, volatile int>, 2, volatile int, 1>();
test<std::pair<char *, int>, 2, char *, 0>();
test<std::pair<char *, int>, 2, int, 1>();
}