58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// class std::ranges::subrange;
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#include <ranges>
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#include <cassert>
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#include "test_macros.h"
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#include "test_iterators.h"
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#include "types.h"
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constexpr bool test() {
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std::ranges::subrange<int*> a(globalBuff, globalBuff + 8, 8);
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auto a1 = a.next();
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assert(a1.begin() == globalBuff + 1);
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assert(a1.size() == 7);
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auto a5 = a.next(5);
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assert(a5.begin() == globalBuff + 5);
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assert(a5.size() == 3);
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auto a4 = a5.prev();
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assert(a4.begin() == globalBuff + 4);
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assert(a4.size() == 4);
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std::ranges::subrange<InputIter, sentinel_wrapper<InputIter>> b(InputIter(globalBuff), sentinel_wrapper(InputIter(globalBuff + 8)));
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auto b1 = std::move(b).next();
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assert(base(b1.begin()) == globalBuff + 1);
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std::ranges::subrange<BidirIter> c(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));
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auto c1 = c.prev();
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assert(base(c1.begin()) == globalBuff + 3);
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auto c2 = c.prev(4);
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assert(base(c2.begin()) == globalBuff);
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std::ranges::subrange<BidirIter> d(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));
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auto d1 = d.advance(4);
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assert(base(d1.begin()) == globalBuff + 8);
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assert(d1.empty());
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auto d2 = d1.advance(-4);
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assert(base(d2.begin()) == globalBuff + 4);
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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