| 1 | // Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal. |
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| 2 | // Copyright (C) 2016 Andrzej Krzemienski |
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| 3 | // |
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| 4 | // Use, modification, and distribution is subject to the Boost Software |
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| 5 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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| 6 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | // |
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| 8 | // See http://www.boost.org/libs/optional for documentation. |
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| 9 | // |
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| 10 | // You are welcome to contact the author at: |
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| 11 | // fernando_cacciola@hotmail.com |
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| 12 | // |
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| 13 | // Revisions: |
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| 14 | // 10 May 2008 (added swap related forward declaration) Niels Dekker |
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| 15 | // |
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| 16 | #ifndef BOOST_OPTIONAL_OPTIONAL_FWD_FLC_19NOV2002_HPP |
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| 17 | #define BOOST_OPTIONAL_OPTIONAL_FWD_FLC_19NOV2002_HPP |
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| 18 | |
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| 19 | #include <boost/config.hpp> |
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| 20 | |
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| 21 | namespace boost { |
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| 22 | |
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| 23 | template<class T> class optional ; |
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| 24 | |
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| 25 | // This forward is needed to refer to namespace scope swap from the member swap |
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| 26 | template<class T> void swap ( optional<T>& , optional<T>& ) ; |
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| 27 | |
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| 28 | template<class T> struct optional_swap_should_use_default_constructor ; |
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| 29 | |
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| 30 | #ifndef BOOST_OPTIONAL_CONFIG_DONT_SPECIALIZE_OPTIONAL_REFS |
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| 31 | |
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| 32 | template<class T> class optional<T&> ; |
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| 33 | |
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| 34 | template<class T> void swap ( optional<T&>& , optional<T&>& ) BOOST_NOEXCEPT; |
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| 35 | |
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| 36 | #endif |
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| 37 | |
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| 38 | } // namespace boost |
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| 39 | |
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| 40 | #endif |
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| 41 | |
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| 42 | |
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