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 37 template <class C> 38 class non_const_compare 39 { 40 // operator() deliberately not marked as 'const' 41 bool operator()(const C& x, const C& y) { return x < y; } 42 }; 43 44 45 #endif // TEST_COMPARE_H 46
