bc8d3f97eb
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <iterator>
|
|
|
|
// template<class Iter>
|
|
// struct iterator_traits
|
|
// {
|
|
// typedef typename Iter::difference_type difference_type;
|
|
// typedef typename Iter::value_type value_type;
|
|
// typedef typename Iter::pointer pointer;
|
|
// typedef typename Iter::reference reference;
|
|
// typedef typename Iter::iterator_category iterator_category;
|
|
// };
|
|
|
|
#include <iterator>
|
|
#include <type_traits>
|
|
|
|
struct A {};
|
|
|
|
struct test_iterator
|
|
{
|
|
typedef int difference_type;
|
|
typedef A value_type;
|
|
typedef A* pointer;
|
|
typedef A& reference;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
};
|
|
|
|
int main()
|
|
{
|
|
typedef std::iterator_traits<test_iterator> It;
|
|
static_assert((std::is_same<It::difference_type, int>::value), "");
|
|
static_assert((std::is_same<It::value_type, A>::value), "");
|
|
static_assert((std::is_same<It::pointer, A*>::value), "");
|
|
static_assert((std::is_same<It::iterator_category, std::forward_iterator_tag>::value), "");
|
|
}
|