ceph/src/boost/libs/smart_ptr/test/allocate_unique_value_test.cpp

   1 /*
   2 Copyright 2019 Glen Joseph Fernandes
   3 (glenjofe@gmail.com)
   4
   5 Distributed under the Boost Software License, Version 1.0.
   6 (http://www.boost.org/LICENSE_1_0.txt)
   7 */
   8 #include <boost/config.hpp>
   9 #if (!defined(BOOST_LIBSTDCXX_VERSION) || \
  10     BOOST_LIBSTDCXX_VERSION >= 46000) && \
  11     !defined(BOOST_NO_CXX11_SMART_PTR)
  12 #include <boost/smart_ptr/allocate_unique.hpp>
  13 #include <boost/core/lightweight_test.hpp>
  14
  15 template<class T = void>
  16 struct creator {
  17     typedef T value_type;
  18     typedef T* pointer;
  19
  20     template<class U>
  21     struct rebind {
  22         typedef creator<U> other;
  23     };
  24
  25     creator() { }
  26
  27     template<class U>
  28     creator(const creator<U>&) { }
  29
  30     T* allocate(std::size_t size) {
  31         return static_cast<T*>(::operator new(sizeof(T) * size));
  32     }
  33
  34     void deallocate(T* ptr, std::size_t) {
  35         ::operator delete(ptr);
  36     }
  37 };
  38
  39 template<class T, class U>
  40 inline bool
  41 operator==(const creator<T>&, const creator<U>&)
  42 {
  43     return true;
  44 }
  45
  46 template<class T, class U>
  47 inline bool
  48 operator!=(const creator<T>&, const creator<U>&)
  49 {
  50     return false;
  51 }
  52
  53 class type {
  54 public:
  55     type(int x, int y)
  56         : value_(x + y) { }
  57
  58     int sum() const {
  59         return value_;
  60     }
  61
  62 private:
  63     int value_;
  64 };
  65
  66 int main()
  67 {
  68     {
  69         std::unique_ptr<int,
  70             boost::alloc_deleter<int, creator<int> > > result =
  71             boost::allocate_unique<int>(creator<int>(), 1);
  72         BOOST_TEST(result.get() != 0);
  73         BOOST_TEST(*result == 1);
  74     }
  75     {
  76         std::unique_ptr<const int,
  77             boost::alloc_deleter<const int, creator<> > > result =
  78             boost::allocate_unique<const int>(creator<>(), 1);
  79         BOOST_TEST(result.get() != 0);
  80         BOOST_TEST(*result == 1);
  81     }
  82     {
  83         std::unique_ptr<type,
  84             boost::alloc_deleter<type, creator<type> > > result =
  85             boost::allocate_unique<type>(creator<type>(), type(1, 2));
  86         BOOST_TEST(result.get() != 0);
  87         BOOST_TEST(result->sum() == 3);
  88     }
  89     {
  90         std::unique_ptr<const type,
  91             boost::alloc_deleter<const type, creator<> > > result =
  92             boost::allocate_unique<const type>(creator<>(), type(1, 2));
  93         BOOST_TEST(result.get() != 0);
  94         BOOST_TEST(result->sum() == 3);
  95     }
  96     return boost::report_errors();
  97 }
  98 #else
  99 int main()
 100 {
 101     return 0;
 102 }
 103 #endif