boost/fusion/adapted/struct/detail/define_struct_inline.hpp
/*=============================================================================
Copyright (c) 2012 Nathan Ridge
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_DETAIL_DEFINE_STRUCT_INLINE_HPP
#define BOOST_FUSION_ADAPTED_STRUCT_DETAIL_DEFINE_STRUCT_INLINE_HPP
#include <boost/fusion/support/config.hpp>
#include <boost/config.hpp>
#include <boost/fusion/support/category_of.hpp>
#include <boost/fusion/sequence/sequence_facade.hpp>
#include <boost/fusion/iterator/iterator_facade.hpp>
#include <boost/fusion/algorithm/auxiliary/copy.hpp>
#include <boost/fusion/adapted/struct/detail/define_struct.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/minus.hpp>
#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/preprocessor/comma_if.hpp>
#include <boost/preprocessor/facilities/empty.hpp>
#include <boost/preprocessor/repeat.hpp>
#include <boost/preprocessor/seq/for_each_i.hpp>
#include <boost/preprocessor/seq/size.hpp>
#include <boost/preprocessor/seq/enum.hpp>
#include <boost/preprocessor/seq/seq.hpp>
#include <boost/preprocessor/tuple/elem.hpp>
// MSVC and GCC <= 4.4 have a bug that affects partial specializations of
// nested templates under some circumstances. This affects the implementation
// of BOOST_FUSION_DEFINE_STRUCT_INLINE, which uses such specializations for
// the iterator class's 'deref' and 'value_of' metafunctions. On these compilers
// an alternate implementation for these metafunctions is used that does not
// require such specializations. The alternate implementation takes longer
// to compile so its use is restricted to the offending compilers.
// For MSVC, the bug was reported at https://connect.microsoft.com/VisualStudio/feedback/details/757891/c-compiler-error-involving-partial-specializations-of-nested-templates
// For GCC, 4.4 and earlier are no longer maintained so there is no need
// to report a bug.
#if defined(BOOST_MSVC) || (defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 4)))
#define BOOST_FUSION_NEED_NESTED_TEMPLATE_PARTIAL_SPEC_WKND
#endif
#ifdef BOOST_FUSION_NEED_NESTED_TEMPLATE_PARTIAL_SPEC_WKND
#include <boost/type_traits/add_const.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/mpl/if.hpp>
#include <boost/fusion/sequence/intrinsic/at_c.hpp>
#include <boost/fusion/container/vector.hpp>
#endif
#define BOOST_FUSION_MAKE_DEFAULT_INIT_LIST_ENTRY(R, DATA, N, ATTRIBUTE) \
BOOST_PP_COMMA_IF(N) BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE)()
#define BOOST_FUSION_MAKE_DEFAULT_INIT_LIST(ATTRIBUTES_SEQ) \
: BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_DEFAULT_INIT_LIST_ENTRY, \
~, \
ATTRIBUTES_SEQ) \
#define BOOST_FUSION_IGNORE_2(ARG1, ARG2)
#define BOOST_FUSION_MAKE_COPY_CONSTRUCTOR(NAME, ATTRIBUTES_SEQ) \
BOOST_FUSION_GPU_ENABLED \
NAME(BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_CONST_REF_PARAM, \
~, \
ATTRIBUTES_SEQ)) \
: BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_INIT_LIST_ENTRY, \
~, \
ATTRIBUTES_SEQ) \
{ \
} \
#define BOOST_FUSION_MAKE_CONST_REF_PARAM(R, DATA, N, ATTRIBUTE) \
BOOST_PP_COMMA_IF(N) \
BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE) const& \
BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE)
#define BOOST_FUSION_MAKE_INIT_LIST_ENTRY_I(NAME) NAME(NAME)
#define BOOST_FUSION_MAKE_INIT_LIST_ENTRY(R, DATA, N, ATTRIBUTE) \
BOOST_PP_COMMA_IF(N) \
BOOST_FUSION_MAKE_INIT_LIST_ENTRY_I(BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE))
#define BOOST_FUSION_ITERATOR_NAME(NAME) \
BOOST_PP_CAT(boost_fusion_detail_, BOOST_PP_CAT(NAME, _iterator))
// Note: all template parameter names need to be uglified, otherwise they might
// shadow a template parameter of the struct when used with
// BOOST_FUSION_DEFINE_TPL_STRUCT_INLINE
#define BOOST_FUSION_MAKE_ITERATOR_VALUE_OF_SPECS(Z, N, NAME) \
template <typename boost_fusion_detail_Sq> \
struct value_of< \
BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, N> \
> \
: boost::mpl::identity< \
typename boost_fusion_detail_Sq::t##N##_type \
> \
{ \
};
#define BOOST_FUSION_MAKE_ITERATOR_DEREF_SPEC( \
SPEC_TYPE, CALL_ARG_TYPE, TYPE_QUAL, ATTRIBUTE, N) \
\
template <typename boost_fusion_detail_Sq> \
struct deref<SPEC_TYPE, N> > \
{ \
typedef typename boost_fusion_detail_Sq::t##N##_type TYPE_QUAL& type; \
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(CALL_ARG_TYPE, N> const& iter) \
{ \
return iter.seq_.BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE); \
} \
};
#define BOOST_FUSION_MAKE_ITERATOR_DEREF_SPECS(R, NAME, N, ATTRIBUTE) \
BOOST_FUSION_MAKE_ITERATOR_DEREF_SPEC( \
BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, \
BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, \
, \
ATTRIBUTE, \
N) \
BOOST_FUSION_MAKE_ITERATOR_DEREF_SPEC( \
BOOST_FUSION_ITERATOR_NAME(NAME)<const boost_fusion_detail_Sq, \
BOOST_FUSION_ITERATOR_NAME(NAME)<const boost_fusion_detail_Sq, \
const, \
ATTRIBUTE, \
N) \
BOOST_FUSION_MAKE_ITERATOR_DEREF_SPEC( \
const BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, \
BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, \
, \
ATTRIBUTE, \
N) \
BOOST_FUSION_MAKE_ITERATOR_DEREF_SPEC( \
const BOOST_FUSION_ITERATOR_NAME(NAME)<const boost_fusion_detail_Sq, \
BOOST_FUSION_ITERATOR_NAME(NAME)<const boost_fusion_detail_Sq, \
const, \
ATTRIBUTE, \
N) \
#define BOOST_FUSION_MAKE_VALUE_AT_SPECS(Z, N, DATA) \
template <typename boost_fusion_detail_Sq> \
struct value_at<boost_fusion_detail_Sq, boost::mpl::int_<N> > \
{ \
typedef typename boost_fusion_detail_Sq::t##N##_type type; \
};
#define BOOST_FUSION_MAKE_AT_SPECS(R, DATA, N, ATTRIBUTE) \
template <typename boost_fusion_detail_Sq> \
struct at<boost_fusion_detail_Sq, boost::mpl::int_<N> > \
{ \
typedef typename boost::mpl::if_< \
boost::is_const<boost_fusion_detail_Sq>, \
typename boost_fusion_detail_Sq::t##N##_type const&, \
typename boost_fusion_detail_Sq::t##N##_type& \
>::type type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_Sq& sq) \
{ \
return sq. BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE); \
} \
};
#define BOOST_FUSION_MAKE_TYPEDEF(R, DATA, N, ATTRIBUTE) \
typedef BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE) t##N##_type;
#define BOOST_FUSION_MAKE_DATA_MEMBER(R, DATA, N, ATTRIBUTE) \
BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE) BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE);
#ifdef BOOST_FUSION_NEED_NESTED_TEMPLATE_PARTIAL_SPEC_WKND
#define BOOST_FUSION_DEFINE_ITERATOR_VALUE_OF(NAME, ATTRIBUTE_SEQ_SIZE) \
template <typename boost_fusion_detail_Iterator> \
struct value_of : boost::fusion::result_of::at_c< \
ref_vec_t, \
boost_fusion_detail_Iterator::index::value \
> \
{ \
};
#define BOOST_FUSION_DEFINE_ITERATOR_DEREF(NAME, ATTRIBUTES_SEQ) \
template <typename boost_fusion_detail_Iterator> \
struct deref \
{ \
typedef typename boost::remove_const< \
boost_fusion_detail_Iterator \
>::type iterator_raw_type; \
\
static const int index = iterator_raw_type::index::value; \
\
typedef typename boost::fusion::result_of::at_c< \
ref_vec_t, \
index \
>::type result_raw_type; \
\
typedef typename boost::mpl::if_< \
boost::is_const<typename iterator_raw_type::sequence_type>, \
typename boost::add_const<result_raw_type>::type, \
result_raw_type \
>::type type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(iterator_raw_type const& iter) \
{ \
return boost::fusion::at_c<index>(iter.ref_vec); \
} \
};
#define BOOST_FUSION_MAKE_ITERATOR_WKND_FIELD_NAME(R, DATA, N, ATTRIBUTE) \
BOOST_PP_COMMA_IF(N) seq.BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE)
#define BOOST_FUSION_DEFINE_ITERATOR_WKND_INIT_LIST_ENTRIES(ATTRIBUTES_SEQ) \
, ref_vec(BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_ITERATOR_WKND_FIELD_NAME, \
~, \
BOOST_PP_SEQ_TAIL(ATTRIBUTES_SEQ)))
#define BOOST_FUSION_MAKE_ITERATOR_WKND_REF(Z, N, DATA) \
BOOST_PP_COMMA_IF(N) \
typename boost::mpl::if_< \
boost::is_const<boost_fusion_detail_Seq>, \
typename boost::add_const< \
typename boost_fusion_detail_Seq::t##N##_type \
>::type, \
typename boost_fusion_detail_Seq::t##N##_type \
>::type&
#define BOOST_FUSION_DEFINE_ITERATOR_WKND_MEMBERS(ATTRIBUTES_SEQ_SIZE) \
typedef boost::fusion::vector< \
BOOST_PP_REPEAT( \
ATTRIBUTES_SEQ_SIZE, \
BOOST_FUSION_MAKE_ITERATOR_WKND_REF, \
~) \
> ref_vec_t; \
\
ref_vec_t ref_vec;
#else
#define BOOST_FUSION_DEFINE_ITERATOR_VALUE_OF(NAME, ATTRIBUTES_SEQ_SIZE) \
template <typename boost_fusion_detail_T> struct value_of; \
BOOST_PP_REPEAT( \
ATTRIBUTES_SEQ_SIZE, \
BOOST_FUSION_MAKE_ITERATOR_VALUE_OF_SPECS, \
NAME)
#define BOOST_FUSION_DEFINE_ITERATOR_DEREF(NAME, ATTRIBUTES_SEQ) \
template <typename boost_fusion_detail_T> struct deref; \
BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_ITERATOR_DEREF_SPECS, \
NAME, \
ATTRIBUTES_SEQ)
#define BOOST_FUSION_DEFINE_ITERATOR_WKND_INIT_LIST_ENTRIES(ATTRIBUTES_SEQ)
#define BOOST_FUSION_DEFINE_ITERATOR_WKND_MEMBERS(ATTRIBUTES_SEQ_SIZE)
#endif // BOOST_FUSION_NEED_NESTED_TEMPLATE_PARTIAL_SPEC_WKND
// Note: We can't nest the iterator inside the struct because we run into
// a MSVC10 bug involving partial specializations of nested templates.
#define BOOST_FUSION_DEFINE_STRUCT_INLINE_IMPL(NAME, ATTRIBUTES) \
BOOST_FUSION_DEFINE_STRUCT_INLINE_ITERATOR(NAME, ATTRIBUTES) \
struct NAME : boost::fusion::sequence_facade< \
NAME, \
boost::fusion::random_access_traversal_tag \
> \
{ \
BOOST_FUSION_DEFINE_STRUCT_INLINE_MEMBERS(NAME, ATTRIBUTES) \
};
#define BOOST_FUSION_DEFINE_TPL_STRUCT_INLINE_IMPL( \
TEMPLATE_PARAMS_SEQ, NAME, ATTRIBUTES) \
\
BOOST_FUSION_DEFINE_STRUCT_INLINE_ITERATOR(NAME, ATTRIBUTES) \
\
template < \
BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS_IMPL( \
(0)TEMPLATE_PARAMS_SEQ) \
> \
struct NAME : boost::fusion::sequence_facade< \
NAME< \
BOOST_PP_SEQ_ENUM(TEMPLATE_PARAMS_SEQ) \
>, \
boost::fusion::random_access_traversal_tag \
> \
{ \
BOOST_FUSION_DEFINE_STRUCT_INLINE_MEMBERS(NAME, ATTRIBUTES) \
};
#define BOOST_FUSION_DEFINE_STRUCT_INLINE_MEMBERS(NAME, ATTRIBUTES) \
BOOST_FUSION_DEFINE_STRUCT_MEMBERS_IMPL( \
NAME, \
BOOST_PP_CAT(BOOST_FUSION_DEFINE_STRUCT_FILLER_0 ATTRIBUTES,_END))
// Note: can't compute BOOST_PP_SEQ_SIZE(ATTRIBUTES_SEQ) directly because
// ATTRIBUTES_SEQ may be empty and calling BOOST_PP_SEQ_SIZE on an empty
// sequence produces warnings on MSVC.
#define BOOST_FUSION_DEFINE_STRUCT_MEMBERS_IMPL(NAME, ATTRIBUTES_SEQ) \
BOOST_FUSION_DEFINE_STRUCT_INLINE_MEMBERS_IMPL_IMPL( \
NAME, \
ATTRIBUTES_SEQ, \
BOOST_PP_DEC(BOOST_PP_SEQ_SIZE((0)ATTRIBUTES_SEQ)))
#define BOOST_FUSION_DEFINE_STRUCT_INLINE_ITERATOR(NAME, ATTRIBUTES) \
BOOST_FUSION_DEFINE_STRUCT_ITERATOR_IMPL( \
NAME, \
BOOST_PP_CAT(BOOST_FUSION_DEFINE_STRUCT_FILLER_0 ATTRIBUTES,_END))
#define BOOST_FUSION_DEFINE_STRUCT_ITERATOR_IMPL(NAME, ATTRIBUTES_SEQ) \
BOOST_FUSION_DEFINE_STRUCT_INLINE_ITERATOR_IMPL_IMPL( \
NAME, \
ATTRIBUTES_SEQ, \
BOOST_PP_DEC(BOOST_PP_SEQ_SIZE((0)ATTRIBUTES_SEQ)))
#define BOOST_FUSION_DEFINE_STRUCT_INLINE_ITERATOR_IMPL_IMPL( \
NAME, ATTRIBUTES_SEQ, ATTRIBUTES_SEQ_SIZE) \
\
BOOST_FUSION_PUSH_WARNINGS \
BOOST_FUSION_DISABLE_MSVC_WARNING(4512) \
\
template <typename boost_fusion_detail_Seq, int N> \
struct BOOST_FUSION_ITERATOR_NAME(NAME) \
: boost::fusion::iterator_facade< \
BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Seq, N>, \
boost::fusion::random_access_traversal_tag \
> \
{ \
typedef boost::mpl::int_<N> index; \
typedef boost_fusion_detail_Seq sequence_type; \
\
BOOST_FUSION_GPU_ENABLED \
BOOST_FUSION_ITERATOR_NAME(NAME)(boost_fusion_detail_Seq& seq) \
: seq_(seq) \
BOOST_FUSION_DEFINE_ITERATOR_WKND_INIT_LIST_ENTRIES( \
(0)ATTRIBUTES_SEQ) \
{} \
\
boost_fusion_detail_Seq& seq_; \
\
BOOST_FUSION_DEFINE_ITERATOR_WKND_MEMBERS(ATTRIBUTES_SEQ_SIZE) \
\
BOOST_FUSION_DEFINE_ITERATOR_VALUE_OF(NAME, ATTRIBUTES_SEQ_SIZE) \
\
BOOST_FUSION_DEFINE_ITERATOR_DEREF(NAME, ATTRIBUTES_SEQ) \
\
template <typename boost_fusion_detail_It> \
struct next \
{ \
typedef BOOST_FUSION_ITERATOR_NAME(NAME)< \
typename boost_fusion_detail_It::sequence_type, \
boost_fusion_detail_It::index::value + 1 \
> type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_It const& it) \
{ \
return type(it.seq_); \
} \
}; \
\
template <typename boost_fusion_detail_It> \
struct prior \
{ \
typedef BOOST_FUSION_ITERATOR_NAME(NAME)< \
typename boost_fusion_detail_It::sequence_type, \
boost_fusion_detail_It::index::value - 1 \
> type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_It const& it) \
{ \
return type(it.seq_); \
} \
}; \
\
template < \
typename boost_fusion_detail_It1, \
typename boost_fusion_detail_It2 \
> \
struct distance \
{ \
typedef typename boost::mpl::minus< \
typename boost_fusion_detail_It2::index, \
typename boost_fusion_detail_It1::index \
>::type type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_It1 const& /* it1 */, \
boost_fusion_detail_It2 const& /* it2 */) \
{ \
return type(); \
} \
}; \
\
template < \
typename boost_fusion_detail_It, \
typename boost_fusion_detail_M \
> \
struct advance \
{ \
typedef BOOST_FUSION_ITERATOR_NAME(NAME)< \
typename boost_fusion_detail_It::sequence_type, \
boost_fusion_detail_It::index::value \
+ boost_fusion_detail_M::value \
> type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_It const& it) \
{ \
return type(it.seq_); \
} \
}; \
}; \
\
BOOST_FUSION_POP_WARNINGS \
/**/
#define BOOST_FUSION_DEFINE_STRUCT_INLINE_MEMBERS_IMPL_IMPL( \
NAME, ATTRIBUTES_SEQ, ATTRIBUTES_SEQ_SIZE) \
\
NAME() \
BOOST_PP_IF(ATTRIBUTES_SEQ_SIZE, \
BOOST_FUSION_MAKE_DEFAULT_INIT_LIST, \
BOOST_PP_EMPTY)(ATTRIBUTES_SEQ) \
{ \
} \
\
BOOST_PP_IF( \
ATTRIBUTES_SEQ_SIZE, \
BOOST_FUSION_MAKE_COPY_CONSTRUCTOR, \
BOOST_FUSION_IGNORE_2) \
(NAME, ATTRIBUTES_SEQ) \
\
template <typename boost_fusion_detail_Seq> \
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
NAME(const boost_fusion_detail_Seq& rhs) \
{ \
boost::fusion::copy(rhs, *this); \
} \
\
template <typename boost_fusion_detail_Seq> \
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
NAME& operator=(const boost_fusion_detail_Seq& rhs) \
{ \
boost::fusion::copy(rhs, *this); \
return *this; \
} \
\
template <typename boost_fusion_detail_Sq> \
struct begin \
{ \
typedef BOOST_FUSION_ITERATOR_NAME(NAME)<boost_fusion_detail_Sq, 0> \
type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_Sq& sq) \
{ \
return type(sq); \
} \
}; \
\
template <typename boost_fusion_detail_Sq> \
struct end \
{ \
typedef BOOST_FUSION_ITERATOR_NAME(NAME)< \
boost_fusion_detail_Sq, \
ATTRIBUTES_SEQ_SIZE \
> type; \
\
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED \
static type call(boost_fusion_detail_Sq& sq) \
{ \
return type(sq); \
} \
}; \
\
template <typename boost_fusion_detail_Sq> \
struct size : boost::mpl::int_<ATTRIBUTES_SEQ_SIZE> \
{ \
}; \
\
template <typename boost_fusion_detail_Sq> \
struct empty : boost::mpl::bool_<ATTRIBUTES_SEQ_SIZE == 0> \
{ \
}; \
\
template < \
typename boost_fusion_detail_Sq, \
typename boost_fusion_detail_N \
> \
struct value_at : value_at< \
boost_fusion_detail_Sq, \
boost::mpl::int_<boost_fusion_detail_N::value> \
> \
{ \
}; \
\
BOOST_PP_REPEAT( \
ATTRIBUTES_SEQ_SIZE, \
BOOST_FUSION_MAKE_VALUE_AT_SPECS, \
~) \
\
template < \
typename boost_fusion_detail_Sq, \
typename boost_fusion_detail_N \
> \
struct at : at< \
boost_fusion_detail_Sq, \
boost::mpl::int_<boost_fusion_detail_N::value> \
> \
{ \
}; \
\
BOOST_PP_SEQ_FOR_EACH_I(BOOST_FUSION_MAKE_AT_SPECS, ~, ATTRIBUTES_SEQ) \
\
BOOST_PP_SEQ_FOR_EACH_I(BOOST_FUSION_MAKE_TYPEDEF, ~, ATTRIBUTES_SEQ) \
\
BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_FUSION_MAKE_DATA_MEMBER, \
~, \
ATTRIBUTES_SEQ)
#endif