58 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++14, c++1710 11// class std::ranges::subrange;12 13#include <ranges>14 15#include <cassert>16#include "test_macros.h"17#include "test_iterators.h"18#include "types.h"19 20constexpr bool test() {21 std::ranges::subrange<int*> a(globalBuff, globalBuff + 8, 8);22 auto a1 = a.next();23 assert(a1.begin() == globalBuff + 1);24 assert(a1.size() == 7);25 auto a5 = a.next(5);26 assert(a5.begin() == globalBuff + 5);27 assert(a5.size() == 3);28 auto a4 = a5.prev();29 assert(a4.begin() == globalBuff + 4);30 assert(a4.size() == 4);31 32 std::ranges::subrange<InputIter, sentinel_wrapper<InputIter>> b(InputIter(globalBuff), sentinel_wrapper(InputIter(globalBuff + 8)));33 auto b1 = std::move(b).next();34 assert(base(b1.begin()) == globalBuff + 1);35 36 std::ranges::subrange<BidirIter> c(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));37 auto c1 = c.prev();38 assert(base(c1.begin()) == globalBuff + 3);39 auto c2 = c.prev(4);40 assert(base(c2.begin()) == globalBuff);41 42 std::ranges::subrange<BidirIter> d(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));43 auto d1 = d.advance(4);44 assert(base(d1.begin()) == globalBuff + 8);45 assert(d1.empty());46 auto d2 = d1.advance(-4);47 assert(base(d2.begin()) == globalBuff + 4);48 49 return true;50}51 52int main(int, char**) {53 test();54 static_assert(test());55 56 return 0;57}58