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externals: Update boost to 1.72 and add Boost Context

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This commit is contained in:
Fernando Sahmkow 2020-02-10 12:31:57 -04:00
parent 5e8300b76a
commit 77abe07b3b
618 changed files with 96299 additions and 14263 deletions
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88
boost/variant/detail/generic_result_type.hpp
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@ -1,88 +0,0 @@
//-----------------------------------------------------------------------------
// boost variant/detail/generic_result_type.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2003
// Eric Friedman
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_VARIANT_DETAIL_GENERIC_RESULT_TYPE_HPP
#define BOOST_VARIANT_DETAIL_GENERIC_RESULT_TYPE_HPP
#include <boost/config.hpp>
//////////////////////////////////////////////////////////////////////////
// (workaround) macro BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE
//
// On compilers with BOOST_NO_VOID_RETURNS, this macro provides a route
// to a single syntax for dealing with template functions that may (but
// not necessarily) return nothing (i.e. void).
//
// BOOST_VARIANT_AUX_RETURN_VOID provided for compilers w/ (erroneous?)
// warnings about non-void functions not returning a value.
//
#if !defined(BOOST_NO_VOID_RETURNS)
#define BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(T) \
T \
/**/
#define BOOST_VARIANT_AUX_RETURN_VOID \
/**/
#define BOOST_VARIANT_AUX_RETURN_VOID_TYPE \
void \
/**/
#else // defined(BOOST_NO_VOID_RETURNS)
namespace boost {
namespace detail { namespace variant {
struct fake_return_void
{
fake_return_void()
{
}
template <typename T>
fake_return_void(const T&)
{
}
};
template <typename T>
struct no_void_returns_helper
{
typedef T type;
};
template <>
struct no_void_returns_helper<void>
{
typedef fake_return_void type;
};
}} // namespace detail::variant
} // namespace boost
#define BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(T) \
BOOST_DEDUCED_TYPENAME \
::boost::detail::variant::no_void_returns_helper< T >::type \
/**/
#define BOOST_VARIANT_AUX_RETURN_VOID \
return ::boost::detail::variant::fake_return_void() \
/**/
#define BOOST_VARIANT_AUX_RETURN_VOID_TYPE \
::boost::detail::variant::fake_return_void
#endif // BOOST_NO_VOID_RETURNS workaround
#endif // BOOST_VARIANT_DETAIL_GENERIC_RESULT_TYPE_HPP