89 lines
2.2 KiB
C++
89 lines
2.2 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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// <span>
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// template<class T, size_t N>
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// span(T (&)[N]) -> span<T, N>;
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//
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// template<class T, size_t N>
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// span(array<T, N>&) -> span<T, N>;
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//
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// template<class T, size_t N>
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// span(const array<T, N>&) -> span<const T, N>;
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//
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// template<class Container>
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// span(Container&) -> span<typename Container::value_type>;
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//
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// template<class Container>
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// span(const Container&) -> span<const typename Container::value_type>;
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#include <span>
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#include <array>
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#include <cassert>
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#include <memory>
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#include <string>
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#include "test_macros.h"
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int main(int, char**)
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{
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{
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int arr[] = {1,2,3};
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std::span s{arr};
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ASSERT_SAME_TYPE(decltype(s), std::span<int, 3>);
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assert(s.size() == std::size(arr));
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assert(s.data() == std::data(arr));
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}
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{
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const int arr[] = {1,2,3};
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std::span s{arr};
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ASSERT_SAME_TYPE(decltype(s), std::span<const int, 3>);
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assert(s.size() == std::size(arr));
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assert(s.data() == std::data(arr));
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}
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{
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std::array<double, 4> arr = {1.0, 2.0, 3.0, 4.0};
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std::span s{arr};
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ASSERT_SAME_TYPE(decltype(s), std::span<double, 4>);
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assert(s.size() == arr.size());
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assert(s.data() == arr.data());
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}
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{
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const std::array<long, 5> arr = {4, 5, 6, 7, 8};
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std::span s{arr};
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ASSERT_SAME_TYPE(decltype(s), std::span<const long, 5>);
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assert(s.size() == arr.size());
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assert(s.data() == arr.data());
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}
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{
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std::string str{"ABCDE"};
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std::span s{str};
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ASSERT_SAME_TYPE(decltype(s), std::span<char>);
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assert(s.size() == str.size());
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assert(s.data() == str.data());
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}
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{
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const std::string str{"QWERTYUIOP"};
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std::span s{str};
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ASSERT_SAME_TYPE(decltype(s), std::span<const char>);
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assert(s.size() == str.size());
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assert(s.data() == str.data());
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}
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return 0;
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}
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