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59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
// Copyright 2025 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt)
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#include <boost/array.hpp>
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#include <boost/config.hpp>
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#include <boost/config/pragma_message.hpp>
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#include <boost/config/workaround.hpp>
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#include <cstddef>
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#if defined(BOOST_NO_CXX11_CONSTEXPR)
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BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_NO_CXX11_CONSTEXPR is defined")
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#elif BOOST_WORKAROUND(BOOST_MSVC, < 1910)
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BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_MSVC < 1910")
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#elif BOOST_WORKAROUND(BOOST_GCC, < 50000)
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BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_GCC < 50000")
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#else
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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template<class T, std::size_t N> void test1()
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{
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constexpr boost::array<T, N> a = {};
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STATIC_ASSERT( a.begin() == a.data() );
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STATIC_ASSERT( a.end() == a.data() + N );
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STATIC_ASSERT( a.cbegin() == a.data() );
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STATIC_ASSERT( a.cend() == a.data() + N );
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}
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template<class T> void test2()
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{
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constexpr boost::array<T, 0> a = {};
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// iterator access is not constexpr for boost::array<T, 0>
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// it is for std::array<T, 0>, though, so we should change it
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STATIC_ASSERT( a.begin() == a.end() );
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STATIC_ASSERT( a.cbegin() == a.cend() );
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}
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int main()
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{
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// test1<int, 0>();
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test1<int, 1>();
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test1<int, 7>();
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// test2<int>();
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}
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#endif
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