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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-has-no-incomplete-pstl
// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2,
// class Predicate, class T>
// ForwardIterator2
// replace_copy_if(ExecutionPolicy&& exec,
// ForwardIterator1 first, ForwardIterator1 last,
// ForwardIterator2 result,
// Predicate pred, const T& new_value);
#include <algorithm>
#include <array>
#include <cassert>
#include <vector>
#include "type_algorithms.h"
#include "test_execution_policies.h"
#include "test_iterators.h"
template <class Iter>
struct Test {
template <class ExecutionPolicy>
void operator()(ExecutionPolicy&& policy) {
{ // simple test
std::array a = {1, 2, 3, 4, 5, 6, 7, 8};
std::array<int, a.size()> out;
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(std::begin(out)), [](int i) { return i == 3; }, 6);
assert((out == std::array{1, 2, 6, 4, 5, 6, 7, 8}));
}
{ // empty range works
std::array<int, 0> a = {};
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(std::begin(a)), [](int i) { return i == 3; }, 6);
}
{ // non-empty range without a match works
std::array a = {1, 2};
std::array<int, a.size()> out;
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(out.data()), [](int i) { return i == 3; }, 6);
assert((out == std::array{1, 2}));
}
{ // single element range works
std::array a = {3};
std::array<int, a.size()> out;
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(std::begin(out)), [](int i) { return i == 3; }, 6);
assert((out == std::array{6}));
}
{ // two element range works
std::array a = {3, 4};
std::array<int, a.size()> out;
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(std::begin(out)), [](int i) { return i == 3; }, 6);
assert((out == std::array{6, 4}));
}
{ // multiple matching elements work
std::array a = {1, 2, 3, 4, 3, 3, 5, 6, 3};
std::array<int, a.size()> out;
std::replace_copy_if(
policy, Iter(std::begin(a)), Iter(std::end(a)), Iter(std::begin(out)), [](int i) { return i == 3; }, 9);
assert((out == std::array{1, 2, 9, 4, 9, 9, 5, 6, 9}));
}
{ // large range works
std::vector<int> a(150, 3);
std::vector<int> out(a.size());
a[45] = 5;
std::replace_copy_if(
policy,
Iter(std::data(a)),
Iter(std::data(a) + std::size(a)),
Iter(out.data()),
[](int i) { return i == 3; },
6);
std::vector<int> comp(150, 6);
comp[45] = 5;
assert(std::equal(out.begin(), out.end(), comp.begin()));
}
}
};
struct ThrowOnCompare {};
#ifndef TEST_HAS_NO_EXCEPTIONS
bool operator==(ThrowOnCompare, ThrowOnCompare) { throw int{}; }
#endif
int main(int, char**) {
types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});
#ifndef TEST_HAS_NO_EXCEPTIONS
std::set_terminate(terminate_successful);
ThrowOnCompare a[2];
try {
(void)std::replace_copy_if(
std::execution::par,
std::begin(a),
std::end(a),
std::begin(a),
[](ThrowOnCompare& i) { return i == i; },
ThrowOnCompare{});
} catch (int) {
assert(false);
}
#endif
return 0;
}
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