81 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// UNSUPPORTED: c++03, c++11, c++1410// UNSUPPORTED: libcpp-has-no-incomplete-pstl11 12// template<class ExecutionPolicy, class ForwardIterator, class T>13// void replace(ExecutionPolicy&& exec,14// ForwardIterator first, ForwardIterator last,15// const T& old_value, const T& new_value);16 17#include <algorithm>18#include <array>19#include <cassert>20#include <vector>21 22#include "type_algorithms.h"23#include "test_execution_policies.h"24#include "test_iterators.h"25 26template <class Iter>27struct Test {28 template <class ExecutionPolicy>29 void operator()(ExecutionPolicy&& policy) {30 { // simple test31 std::array a = {1, 2, 3, 4, 5, 6, 7, 8};32 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);33 assert((a == std::array{1, 2, 6, 4, 5, 6, 7, 8}));34 }35 36 { // empty range works37 std::array<int, 0> a = {};38 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);39 }40 41 { // non-empty range without a match works42 std::array a = {1, 2};43 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);44 }45 46 { // single element range works47 std::array a = {3};48 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);49 assert((a == std::array{6}));50 }51 52 { // two element range works53 std::array a = {3, 4};54 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);55 assert((a == std::array{6, 4}));56 }57 58 { // multiple matching elements work59 std::array a = {1, 2, 3, 4, 3, 3, 5, 6, 3};60 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 9);61 assert((a == std::array{1, 2, 9, 4, 9, 9, 5, 6, 9}));62 }63 64 { // large range works65 std::vector<int> a(150, 3);66 a[45] = 5;67 std::replace(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 3, 6);68 69 std::vector<int> comp(150, 6);70 comp[45] = 5;71 assert(std::equal(a.begin(), a.end(), comp.begin()));72 }73 }74};75 76int main(int, char**) {77 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});78 79 return 0;80}81