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#9516 BOOST_FUSION_AUTO_ADAPT_STRUCT that does not require specifying the types of the fields.

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This commit is contained in:
Damien Buhl (alias daminetreg)
2013-12-22 21:14:31 +01:00
parent a0c1ec2018
commit 3f965e00d3
3 changed files with 193 additions and 0 deletions
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28
include/boost/fusion/adapted/struct/auto_adapt_struct.hpp Normal file
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/*=============================================================================
Copyright (c) 2001-2007 Joel de Guzman
Copyright (c) 2009-2011 Christopher Schmidt
Copyright (c) 2013-2014 Damien Buhl
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_FUSION_ADAPTED_STRUCT_AUTO_ADAPT_STRUCT_HPP
#define BOOST_FUSION_ADAPTED_STRUCT_AUTO_ADAPT_STRUCT_HPP
#include <boost/preprocessor/seq/for_each.hpp>
#include <boost/typeof/typeof.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#define BOOST_FUSION_AUTO_ADAPT_STRUCT_FILLER(r, data, elem) \
(BOOST_TYPEOF(data::elem), elem) \
#define BOOST_FUSION_AUTO_ADAPT_STRUCT(NAME, ATTRIBUTES) \
BOOST_FUSION_ADAPT_STRUCT(NAME, \
BOOST_PP_SEQ_FOR_EACH( \
BOOST_FUSION_AUTO_ADAPT_STRUCT_FILLER, NAME, ATTRIBUTES) \
)
#endif

1
test/Jamfile
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@ -141,6 +141,7 @@ project
[ run sequence/adapt_assoc_tpl_struct.cpp : : : : ]
[ run sequence/adapt_struct_named.cpp : : : : ]
[ run sequence/adapt_struct.cpp : : : : ]
[ run sequence/auto_adapt_struct.cpp : : : : ]
[ run sequence/adapt_tpl_adt.cpp : : : : ]
[ run sequence/adapt_tpl_struct.cpp : : : : ]
[ run sequence/adt_attribute_proxy.cpp : : : : ]

164
test/sequence/auto_adapt_struct.cpp Normal file
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/*=============================================================================
Copyright (c) 2001-2007 Joel de Guzman
Copyright (c) 2013-2014 Damien Buhl
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/detail/lightweight_test.hpp>
#include <boost/fusion/adapted/struct/auto_adapt_struct.hpp>
#include <boost/fusion/sequence/intrinsic/at.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/sequence/intrinsic/empty.hpp>
#include <boost/fusion/sequence/intrinsic/front.hpp>
#include <boost/fusion/sequence/intrinsic/back.hpp>
#include <boost/fusion/sequence/intrinsic/value_at.hpp>
#include <boost/fusion/sequence/io/out.hpp>
#include <boost/fusion/container/vector/vector.hpp>
#include <boost/fusion/container/list/list.hpp>
#include <boost/fusion/container/generation/make_vector.hpp>
#include <boost/fusion/container/vector/convert.hpp>
#include <boost/fusion/sequence/comparison/equal_to.hpp>
#include <boost/fusion/sequence/comparison/not_equal_to.hpp>
#include <boost/fusion/sequence/comparison/less.hpp>
#include <boost/fusion/sequence/comparison/less_equal.hpp>
#include <boost/fusion/sequence/comparison/greater.hpp>
#include <boost/fusion/sequence/comparison/greater_equal.hpp>
#include <boost/fusion/mpl.hpp>
#include <boost/fusion/support/is_view.hpp>
#include <boost/mpl/front.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/static_assert.hpp>
#include <iostream>
#include <string>
namespace ns
{
struct point
{
int x;
int y;
};
#if !BOOST_WORKAROUND(__GNUC__,<4)
struct point_with_private_attributes
{
friend struct boost::fusion::extension::access;
private:
int x;
int y;
public:
point_with_private_attributes(int x, int y):x(x),y(y)
{}
};
#endif
}
BOOST_FUSION_AUTO_ADAPT_STRUCT(
ns::point,
(x)
(y)
)
#if !BOOST_WORKAROUND(__GNUC__,<4)
BOOST_FUSION_AUTO_ADAPT_STRUCT(
ns::point_with_private_attributes,
(x)
(y)
)
#endif
struct s { int m; };
BOOST_FUSION_AUTO_ADAPT_STRUCT(s, (m))
int
main()
{
using namespace boost::fusion;
using namespace boost;
std::cout << tuple_open('[');
std::cout << tuple_close(']');
std::cout << tuple_delimiter(", ");
{
BOOST_MPL_ASSERT_NOT((traits::is_view<ns::point>));
ns::point p = {123, 456};
std::cout << at_c<0>(p) << std::endl;
std::cout << at_c<1>(p) << std::endl;
std::cout << p << std::endl;
BOOST_TEST(p == make_vector(123, 456));
at_c<0>(p) = 6;
at_c<1>(p) = 9;
BOOST_TEST(p == make_vector(6, 9));
BOOST_STATIC_ASSERT(boost::fusion::result_of::size<ns::point>::value == 2);
BOOST_STATIC_ASSERT(!boost::fusion::result_of::empty<ns::point>::value);
BOOST_TEST(front(p) == 6);
BOOST_TEST(back(p) == 9);
}
{
fusion::vector<int, float> v1(4, 2);
ns::point v2 = {5, 3};
fusion::vector<long, double> v3(5, 4);
BOOST_TEST(v1 < v2);
BOOST_TEST(v1 <= v2);
BOOST_TEST(v2 > v1);
BOOST_TEST(v2 >= v1);
BOOST_TEST(v2 < v3);
BOOST_TEST(v2 <= v3);
BOOST_TEST(v3 > v2);
BOOST_TEST(v3 >= v2);
}
{
// conversion from ns::point to vector
ns::point p = {5, 3};
fusion::vector<int, long> v(p);
v = p;
}
{
// conversion from ns::point to list
ns::point p = {5, 3};
fusion::list<int, long> l(p);
l = p;
}
{ // begin/end
using namespace boost::fusion;
using boost::is_same;
typedef boost::fusion::result_of::begin<s>::type b;
typedef boost::fusion::result_of::end<s>::type e;
// this fails
BOOST_MPL_ASSERT((is_same<boost::fusion::result_of::next<b>::type, e>));
}
{
BOOST_MPL_ASSERT((mpl::is_sequence<ns::point>));
BOOST_MPL_ASSERT((boost::is_same<
boost::fusion::result_of::value_at_c<ns::point,0>::type
, mpl::front<ns::point>::type>));
}
#if !BOOST_WORKAROUND(__GNUC__,<4)
{
ns::point_with_private_attributes p(123, 456);
std::cout << at_c<0>(p) << std::endl;
std::cout << at_c<1>(p) << std::endl;
std::cout << p << std::endl;
BOOST_TEST(p == make_vector(123, 456));
}
#endif
return boost::report_errors();
}