external/bsd/libc++/dist/libcxx/test/containers/test_compare.h

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef TEST_COMPARE_H
  11 #define TEST_COMPARE_H
  12
  13 #include <cstddef>
  14 #include <type_traits>
  15 #include <cstdlib>
  16 #include <new>
  17 #include <climits>
  18
  19 template <class C>
  20 class test_compare
  21     : private C
  22 {
  23     int data_;
  24 public:
  25     explicit test_compare(int data = 0) : data_(data) {}
  26
  27     typename C::result_type
  28     operator()(typename std::add_lvalue_reference<const typename C::first_argument_type>::type x,
  29                typename std::add_lvalue_reference<const typename C::second_argument_type>::type y) const
  30         {return C::operator()(x, y);}
  31
  32     bool operator==(const test_compare& c) const
  33         {return data_ == c.data_;}
  34 };
  35
  36 #endif  // TEST_COMPARE_H