libcxx/test/std/time/rep.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 REP_H
  10 #define REP_H
  11
  12 #include "test_macros.h"
  13
  14 class Rep
  15 {
  16     int data_;
  17 public:
  18     TEST_CONSTEXPR Rep() : data_(-1) {}
  19     explicit TEST_CONSTEXPR Rep(int i) : data_(i) {}
  20
  21     bool TEST_CONSTEXPR operator==(int i) const {return data_ == i;}
  22     bool TEST_CONSTEXPR operator==(const Rep& r) const {return data_ == r.data_;}
  23
  24     Rep& operator*=(Rep x) {data_ *= x.data_; return *this;}
  25     Rep& operator/=(Rep x) {data_ /= x.data_; return *this;}
  26 };
  27
  28 // This is PR#41130
  29
  30 struct NotARep {};
  31
  32 // std::chrono:::duration has only '*', '/' and '%' taking a "Rep" parameter
  33
  34 // Multiplication is commutative, division is not.
  35 template <class Rep, class Period>
  36 std::chrono::duration<Rep, Period>
  37 operator*(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
  38
  39 template <class Rep, class Period>
  40 std::chrono::duration<Rep, Period>
  41 operator*(NotARep, std::chrono::duration<Rep, Period> d) { return d; }
  42
  43 template <class Rep, class Period>
  44 std::chrono::duration<Rep, Period>
  45 operator/(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
  46
  47 template <class Rep, class Period>
  48 std::chrono::duration<Rep, Period>
  49 operator%(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
  50
  51 // op= is not commutative.
  52 template <class Rep, class Period>
  53 std::chrono::duration<Rep, Period>&
  54 operator*=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
  55
  56 template <class Rep, class Period>
  57 std::chrono::duration<Rep, Period>&
  58 operator/=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
  59
  60 template <class Rep, class Period>
  61 std::chrono::duration<Rep, Period>&
  62 operator%=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
  63
  64 #endif // REP_H