95 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <algorithm>10 11// template<InputIterator InIter, typename OutIter, class T>12// requires OutputIterator<OutIter, InIter::reference>13// && OutputIterator<OutIter, const T&>14// && HasEqualTo<InIter::value_type, T>15// constexpr OutIter // constexpr after C++1716// replace_copy(InIter first, InIter last, OutIter result, const T& old_value,17// const T& new_value);18 19#include <algorithm>20#include <cassert>21 22#include "test_macros.h"23#include "test_iterators.h"24 25 26#if TEST_STD_VER > 1727TEST_CONSTEXPR bool test_constexpr() {28 int ia[] = {0, 1, 2, 3, 4};29 int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger30 const int expected[] = {0, 1, 5, 3, 4};31 32 auto it = std::replace_copy(std::begin(ia), std::end(ia), std::begin(ib), 2, 5);33 34 return it == (std::begin(ib) + std::size(ia))35 && *it == 0 // don't overwrite the last value in the output array36 && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))37 ;38 }39#endif40 41template <class InIter, class OutIter>42void43test()44{45 int ia[] = {0, 1, 2, 3, 4};46 const unsigned sa = sizeof(ia)/sizeof(ia[0]);47 int ib[sa] = {0};48 OutIter r = std::replace_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2, 5);49 assert(base(r) == ib + sa);50 assert(ib[0] == 0);51 assert(ib[1] == 1);52 assert(ib[2] == 5);53 assert(ib[3] == 3);54 assert(ib[4] == 4);55}56 57int main(int, char**)58{59 test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();60 test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();61 test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();62 test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();63 test<cpp17_input_iterator<const int*>, int*>();64 65 test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();66 test<forward_iterator<const int*>, forward_iterator<int*> >();67 test<forward_iterator<const int*>, bidirectional_iterator<int*> >();68 test<forward_iterator<const int*>, random_access_iterator<int*> >();69 test<forward_iterator<const int*>, int*>();70 71 test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();72 test<bidirectional_iterator<const int*>, forward_iterator<int*> >();73 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();74 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();75 test<bidirectional_iterator<const int*>, int*>();76 77 test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();78 test<random_access_iterator<const int*>, forward_iterator<int*> >();79 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();80 test<random_access_iterator<const int*>, random_access_iterator<int*> >();81 test<random_access_iterator<const int*>, int*>();82 83 test<const int*, cpp17_output_iterator<int*> >();84 test<const int*, forward_iterator<int*> >();85 test<const int*, bidirectional_iterator<int*> >();86 test<const int*, random_access_iterator<int*> >();87 test<const int*, int*>();88 89#if TEST_STD_VER > 1790 static_assert(test_constexpr());91#endif92 93 return 0;94}95