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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, c++17
// UNSUPPORTED: !c++experimental
// General tests for join_view. This file does not test anything specifically.
#include <algorithm>
#include <cassert>
#include <ranges>
#include <string>
#include <vector>
#include "types.h"
template <class R, class I>
bool isEqual(R& r, I i) {
for (auto e : r)
if (e != *i++)
return false;
return true;
}
int main(int, char**) {
{
int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
int* flattened = reinterpret_cast<int*>(buffer);
ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
auto jv = std::ranges::join_view(ParentView(children));
assert(isEqual(jv, flattened));
}
{
std::vector<std::string> vec = {"Hello", ",", " ", "World", "!"};
std::string check = "Hello, World!";
std::ranges::join_view jv(vec);
assert(isEqual(jv, check.begin()));
}
{
// P2328R1 join_view should join all views of ranges
// join a range of prvalue containers
std::vector x{1, 2, 3, 4};
auto y = x | std::views::transform([](auto i) {
std::vector<int> v(i);
for (int& ii : v) {
ii = i;
}
return v;
});
std::ranges::join_view jv(y);
std::vector<int> check{1, 2, 2, 3, 3, 3, 4, 4, 4, 4};
assert(isEqual(jv, check.begin()));
}
return 0;
}
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