libcxx/test/std/containers/test_hash.h

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef TEST_HASH_H
  10 #define TEST_HASH_H
  11
  12 #include <cstddef>
  13 #include <utility>
  14
  15 template <class T>
  16 class test_hash
  17 {
  18     int data_;
  19 public:
  20     explicit test_hash(int data = 0) : data_(data) {}
  21
  22     std::size_t operator()(const T& x) const
  23         {return std::hash<T>()(x);}
  24
  25     bool operator==(const test_hash& c) const
  26         {return data_ == c.data_;}
  27 };
  28
  29 #endif // TEST_HASH_H