forked from OSchip/llvm-project
52 lines
1.7 KiB
C++
52 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 "types.h"
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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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// convertible-to-non-slicing cases:
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// 1. Not convertible (fail)
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// 2. Only one is a pointer (succeed)
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// 3. Both are not pointers (succeed)
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// 4. Pointer elements are different types (fail)
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// 5. Pointer elements are same type (succeed)
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// !StoreSize ctor.
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static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // Default case.
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static_assert(!std::is_constructible_v<ForwardSubrange, Empty, ForwardIter>); // 1.
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static_assert( std::is_constructible_v<ConvertibleForwardSubrange, ConvertibleForwardIter, int*>); // 2.
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static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // 3. (Same as default case.)
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// 4. and 5. must be sized.
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constexpr bool test() {
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ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8));
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assert(base(a.begin()) == globalBuff);
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assert(base(a.end()) == globalBuff + 8);
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ConvertibleForwardSubrange b(ConvertibleForwardIter(globalBuff), globalBuff + 8);
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assert(b.begin() == globalBuff);
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assert(b.end() == globalBuff + 8);
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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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