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_HASH_H 11#define TEST_HASH_H 12 13#include <cstddef> 14#include <type_traits> 15 16template <class C> 17class test_hash 18 : private C 19{ 20 int data_; 21public: 22 explicit test_hash(int data = 0) : data_(data) {} 23 24 std::size_t 25 operator()(typename std::add_lvalue_reference<const typename C::argument_type>::type x) const 26 {return C::operator()(x);} 27 28 bool operator==(const test_hash& c) const 29 {return data_ == c.data_;} 30}; 31 32#endif // TEST_HASH_H 33