forked from boostorg/fusion
5906d9c316
- Construct from elements is enabled iff each argument is_convertible to
corresponding element.
- Construct from sequence is enabled iff the single argument is a fusion
sequence.
- C++11 vector and tuple also disable construct from sequence that are
shorter than the destination. C++03 gives incorrect is_convertible
responses in this situation and fails to compile if that constructor is
used; C++11 can have instantation errors in
and_<is_convertible<U, T>...> without the additional check.
- C++11 tuple and vector support truncation conversion and assignment like
all other sequences.
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
/*=============================================================================
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Copyright (c) 2014-2015 Kohei Takahashi
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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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#ifndef FUSION_TUPLE_FORWARD_14122014_0051
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#define FUSION_TUPLE_FORWARD_14122014_0051
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#include <boost/config.hpp>
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/container/vector/detail/config.hpp>
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#if !defined(BOOST_FUSION_HAS_VARIADIC_VECTOR) \
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|| (defined(__WAVE__) && defined(BOOST_FUSION_CREATE_PREPROCESSED_FILES))
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# if defined(BOOST_FUSION_HAS_VARIADIC_TUPLE)
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# undef BOOST_FUSION_HAS_VARIADIC_TUPLE
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# endif
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#else
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# if !defined(BOOST_FUSION_HAS_VARIADIC_TUPLE)
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# define BOOST_FUSION_HAS_VARIADIC_TUPLE
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# endif
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// With no variadics, we will use the C++03 version
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///////////////////////////////////////////////////////////////////////////////
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#if !defined(BOOST_FUSION_HAS_VARIADIC_TUPLE)
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# include <boost/fusion/tuple/detail/tuple_fwd.hpp>
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#else
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///////////////////////////////////////////////////////////////////////////////
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// C++11 interface
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace fusion
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{
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template <typename ...T>
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struct tuple;
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}}
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#endif
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#endif
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