| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <iterator> |
| |
| // move_iterator |
| |
| // reference operator*() const; |
| // |
| // constexpr in C++17 |
| |
| #include <iterator> |
| #include <cassert> |
| #include <memory> |
| |
| #include "test_macros.h" |
| |
| class A |
| { |
| int data_; |
| public: |
| A() : data_(1) {} |
| ~A() {data_ = -1;} |
| |
| friend bool operator==(const A& x, const A& y) |
| {return x.data_ == y.data_;} |
| }; |
| |
| template <class It> |
| void |
| test(It i, typename std::iterator_traits<It>::value_type x) |
| { |
| std::move_iterator<It> r(i); |
| assert(*r == x); |
| typename std::iterator_traits<It>::value_type x2 = *r; |
| assert(x2 == x); |
| } |
| |
| struct do_nothing |
| { |
| void operator()(void*) const {} |
| }; |
| |
| |
| int main() |
| { |
| { |
| A a; |
| test(&a, A()); |
| } |
| #if TEST_STD_VER >= 11 |
| { |
| int i; |
| std::unique_ptr<int, do_nothing> p(&i); |
| test(&p, std::unique_ptr<int, do_nothing>(&i)); |
| } |
| #endif |
| #if TEST_STD_VER > 14 |
| { |
| constexpr const char *p = "123456789"; |
| typedef std::move_iterator<const char *> MI; |
| constexpr MI it1 = std::make_move_iterator(p); |
| constexpr MI it2 = std::make_move_iterator(p+1); |
| static_assert(*it1 == p[0], ""); |
| static_assert(*it2 == p[1], ""); |
| } |
| #endif |
| } |