//
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// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Official repository: https://github.com/boostorg/json
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//
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#ifndef BOOST_JSON_DETAIL_ALIGN_HPP
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#define BOOST_JSON_DETAIL_ALIGN_HPP
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#ifndef BOOST_JSON_STANDALONE
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#include <boost/align/align.hpp>
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#else
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#include <cstddef>
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#include <memory>
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#endif
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BOOST_JSON_NS_BEGIN
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namespace detail {
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#ifndef BOOST_JSON_STANDALONE
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using boost::alignment::align;
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// VFALCO workaround until Boost.Align has the type
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struct class_type {};
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enum unscoped_enumeration_type { };
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enum class scoped_enumeration_type { };
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// [support.types] p5: The type max_align_t is a trivial
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// standard-layout type whose alignment requirement
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// is at least as great as that of every scalar type.
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struct max_align_t
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{
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// arithmetic types
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char a;
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char16_t b;
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char32_t c;
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bool d;
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short int e;
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int f;
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long int g;
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long long int h;
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wchar_t i;
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float j;
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double k;
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long double l;
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// enumeration types
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unscoped_enumeration_type m;
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scoped_enumeration_type n;
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// pointer types
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void* o;
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char* p;
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class_type* q;
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unscoped_enumeration_type* r;
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scoped_enumeration_type* s;
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void(*t)();
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// pointer to member types
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char class_type::* u;
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void (class_type::*v)();
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// nullptr
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std::nullptr_t w;
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};
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#else
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using std::align;
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using max_align_t = std::max_align_t;
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#endif
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} // detail
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BOOST_JSON_NS_END
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#endif
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