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Allow incomplete types in fusion::tag_of and fusion::is_native_fusion_sequence

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This commit is contained in:
Louis Dionne
2018-02-28 20:03:07 -08:00
parent f61bffb21f
commit 82f677c169
5 changed files with 45 additions and 3 deletions
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2
test/Jamfile
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@ -254,6 +254,7 @@ project
[ run functional/invoke_procedure.cpp ]
[ run sequence/swap.cpp ]
[ compile support/is_sequence.cpp ]
[ compile support/pair_deque.cpp ]
[ compile support/pair_list.cpp ]
[ compile support/pair_map.cpp ]
@ -264,6 +265,7 @@ project
: [ requires cxx11_variadic_templates ] ]
[ compile support/and.cpp
: [ requires cxx11_variadic_templates ] ]
[ compile support/tag_of.cpp ]
# [ compile-fail xxx.cpp ]

17
test/support/is_sequence.cpp Normal file
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@ -0,0 +1,17 @@
/*=============================================================================
Copyright (c) 2018 Louis Dionne
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)
==============================================================================*/
#include <boost/fusion/support/is_sequence.hpp>
#include <boost/static_assert.hpp>
// Make sure fusion::is_sequence and fusion::is_native_fusion_sequence can be
// used with an incomplete type.
struct incomplete;
BOOST_STATIC_ASSERT(!boost::fusion::traits::is_sequence<incomplete>::value);
BOOST_STATIC_ASSERT(!boost::fusion::traits::is_native_fusion_sequence<incomplete>::value);
int main() { }

17
test/support/tag_of.cpp Normal file
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@ -0,0 +1,17 @@
/*=============================================================================
Copyright (c) 2018 Louis Dionne
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)
==============================================================================*/
#include <boost/fusion/support/tag_of.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_same.hpp>
// Make sure tag_of can be used with an incomplete type.
struct incomplete;
typedef boost::fusion::traits::tag_of<incomplete>::type Tag;
BOOST_STATIC_ASSERT((boost::is_same<Tag, boost::fusion::non_fusion_tag>::value));
int main() { }