// Copyright (C) 2004, 2005 Arkadiy Vertleyb | |
// Copyright (C) 2005 Peder Holt | |
// 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_TYPEOF_TYPEOF_IMPL_HPP_INCLUDED | |
#define BOOST_TYPEOF_TYPEOF_IMPL_HPP_INCLUDED | |
#include <boost/mpl/size_t.hpp> | |
#include <boost/preprocessor/repetition/enum.hpp> | |
#include <boost/typeof/encode_decode.hpp> | |
#include <boost/typeof/vector.hpp> | |
#include <boost/type_traits/is_function.hpp> | |
#include <boost/utility/enable_if.hpp> | |
#define BOOST_TYPEOF_VECTOR(n) BOOST_PP_CAT(boost::type_of::vector, n) | |
#define BOOST_TYPEOF_sizer_item(z, n, _)\ | |
char item ## n[V::item ## n ::value]; | |
namespace boost { namespace type_of { | |
template<class V> | |
struct sizer | |
{ | |
// char item0[V::item0::value]; | |
// char item1[V::item1::value]; | |
// ... | |
BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE, BOOST_TYPEOF_sizer_item, ~) | |
}; | |
}} | |
#undef BOOST_TYPEOF_sizer_item | |
// | |
namespace boost { namespace type_of { | |
# ifdef BOOST_NO_SFINAE | |
template<class V, class T> | |
sizer<typename encode_type<V, T>::type> encode(const T&); | |
# else | |
template<class V, class T> | |
typename enable_if< | |
typename is_function<T>::type, | |
sizer<typename encode_type<V, T>::type> >::type encode(T&); | |
template<class V, class T> | |
typename disable_if< | |
typename is_function<T>::type, | |
sizer<typename encode_type<V, T>::type> >::type encode(const T&); | |
# endif | |
}} | |
// | |
namespace boost { namespace type_of { | |
template<class V> | |
struct decode_begin | |
{ | |
typedef typename decode_type<typename V::begin>::type type; | |
}; | |
}} | |
#define BOOST_TYPEOF_TYPEITEM(z, n, expr)\ | |
boost::mpl::size_t<sizeof(boost::type_of::encode<BOOST_TYPEOF_VECTOR(0)<> >(expr).item ## n)> | |
#define BOOST_TYPEOF_ENCODED_VECTOR(Expr) \ | |
BOOST_TYPEOF_VECTOR(BOOST_TYPEOF_LIMIT_SIZE)< \ | |
BOOST_PP_ENUM(BOOST_TYPEOF_LIMIT_SIZE, BOOST_TYPEOF_TYPEITEM, Expr) \ | |
> | |
#define BOOST_TYPEOF(Expr)\ | |
boost::type_of::decode_begin<BOOST_TYPEOF_ENCODED_VECTOR(Expr) >::type | |
#define BOOST_TYPEOF_TPL typename BOOST_TYPEOF | |
//offset_vector is used to delay the insertion of data into the vector in order to allow | |
//encoding to be done in many steps | |
namespace boost { namespace type_of { | |
template<typename V,typename Offset> | |
struct offset_vector { | |
}; | |
template<class V,class Offset,class T> | |
struct push_back<boost::type_of::offset_vector<V,Offset>,T> { | |
typedef offset_vector<V,typename Offset::prior> type; | |
}; | |
template<class V,class T> | |
struct push_back<boost::type_of::offset_vector<V,mpl::size_t<0> >,T> { | |
typedef typename push_back<V,T>::type type; | |
}; | |
}} | |
#define BOOST_TYPEOF_NESTED_TYPEITEM(z, n, expr)\ | |
BOOST_STATIC_CONSTANT(int,BOOST_PP_CAT(value,n) = sizeof(boost::type_of::encode<_typeof_start_vector>(expr).item ## n));\ | |
typedef boost::mpl::size_t<BOOST_PP_CAT(self_t::value,n)> BOOST_PP_CAT(item,n); | |
#ifdef __DMC__ | |
#define BOOST_TYPEOF_NESTED_TYPEITEM_2(z,n,expr)\ | |
typedef typename _typeof_encode_fraction<iteration>::BOOST_PP_CAT(item,n) BOOST_PP_CAT(item,n); | |
#define BOOST_TYPEOF_FRACTIONTYPE()\ | |
BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM_2,_)\ | |
typedef _typeof_fraction_iter<Pos> fraction_type; | |
#else | |
#define BOOST_TYPEOF_FRACTIONTYPE()\ | |
typedef _typeof_encode_fraction<self_t::iteration> fraction_type; | |
#endif | |
#ifdef __BORLANDC__ | |
namespace boost { namespace type_of { | |
template<typename Pos,typename Iter> | |
struct generic_typeof_fraction_iter { | |
typedef generic_typeof_fraction_iter<Pos,Iter> self_t; | |
static const int pos=(Pos::value); | |
static const int iteration=(pos/5); | |
static const int where=pos%5; | |
typedef typename Iter::template _apply_next<self_t::iteration>::type fraction_type; | |
typedef generic_typeof_fraction_iter<typename Pos::next,Iter> next; | |
typedef typename v_iter<fraction_type,mpl::int_<self_t::where> >::type type; | |
}; | |
}} | |
#define BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr) \ | |
template<int _Typeof_Iteration>\ | |
struct _typeof_encode_fraction {\ | |
typedef _typeof_encode_fraction<_Typeof_Iteration> self_t;\ | |
BOOST_STATIC_CONSTANT(int,_typeof_encode_offset = (_Typeof_Iteration*BOOST_TYPEOF_LIMIT_SIZE));\ | |
typedef boost::type_of::offset_vector<BOOST_TYPEOF_VECTOR(0)<>,boost::mpl::size_t<self_t::_typeof_encode_offset> > _typeof_start_vector;\ | |
BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM,expr)\ | |
template<int Next>\ | |
struct _apply_next {\ | |
typedef _typeof_encode_fraction<Next> type;\ | |
};\ | |
};\ | |
template<typename Pos>\ | |
struct _typeof_fraction_iter {\ | |
typedef boost::type_of::generic_typeof_fraction_iter<Pos,_typeof_encode_fraction<0> > self_t;\ | |
typedef typename self_t::next next;\ | |
typedef typename self_t::type type;\ | |
}; | |
#else | |
#define BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr) \ | |
template<int _Typeof_Iteration>\ | |
struct _typeof_encode_fraction {\ | |
typedef _typeof_encode_fraction<_Typeof_Iteration> self_t;\ | |
BOOST_STATIC_CONSTANT(int,_typeof_encode_offset = (_Typeof_Iteration*BOOST_TYPEOF_LIMIT_SIZE));\ | |
typedef boost::type_of::offset_vector<BOOST_TYPEOF_VECTOR(0)<>,boost::mpl::size_t<self_t::_typeof_encode_offset> > _typeof_start_vector;\ | |
BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM,expr)\ | |
};\ | |
template<typename Pos>\ | |
struct _typeof_fraction_iter {\ | |
typedef _typeof_fraction_iter<Pos> self_t;\ | |
BOOST_STATIC_CONSTANT(int,pos=(Pos::value));\ | |
BOOST_STATIC_CONSTANT(int,iteration=(pos/BOOST_TYPEOF_LIMIT_SIZE));\ | |
BOOST_STATIC_CONSTANT(int,where=pos%BOOST_TYPEOF_LIMIT_SIZE);\ | |
BOOST_TYPEOF_FRACTIONTYPE()\ | |
typedef typename boost::type_of::v_iter<fraction_type,boost::mpl::int_<self_t::where> >::type type;\ | |
typedef _typeof_fraction_iter<typename Pos::next> next;\ | |
}; | |
#endif | |
#ifdef __MWERKS__ | |
# define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \ | |
template<typename T>\ | |
struct BOOST_PP_CAT(_typeof_template_,name) {\ | |
BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ | |
typedef typename boost::type_of::decode_type<_typeof_fraction_iter<boost::mpl::size_t<0> > >::type type;\ | |
};\ | |
typedef BOOST_PP_CAT(_typeof_template_,name)<int> name; | |
# define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) | |
#else | |
# define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \ | |
struct name {\ | |
BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ | |
typedef typename boost::type_of::decode_type<_typeof_fraction_iter<boost::mpl::size_t<0> > >::type type;\ | |
}; | |
# define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \ | |
struct name {\ | |
BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ | |
typedef boost::type_of::decode_type<_typeof_fraction_iter<boost::mpl::size_t<0> > >::type type;\ | |
}; | |
#endif | |
#endif//BOOST_TYPEOF_COMPLIANT_TYPEOF_IMPL_HPP_INCLUDED |