boost/python
2
0
Fork 0
mirror of https://github.com/boostorg/python.git synced 2026-01-23 05:42:30 +00:00
Code Issues Projects Releases Wiki Activity

improvements for EDG

Browse Source 
[SVN r12961]
This commit is contained in:
Dave Abrahams
2002-02-27 21:13:02 +00:00
parent 8a956bcdf6
commit 0ef39e4440
1 changed files with 27 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
include/boost/python/converter/from_python_data.hpp
View File

@@ -19,6 +19,8 @@
# include <boost/mpl/type_list.hpp>
# include <boost/mpl/for_each.hpp>
# include <boost/type_traits/composite_traits.hpp>
# else
# include <boost/type_traits/cv_traits.hpp>
# endif
namespace boost { namespace python { namespace converter {
@@ -105,24 +107,23 @@ namespace detail
bool, choose_t2 = (
aligned2 && (
is_same<T1,unknown_alignment>::value
| (align2 < alignment_of<T1>::value)
| (align2 < align1)
| (sizeof(T2) < sizeof(T1)))
));
typedef mpl::select_type<choose_t2, T2, T1>::type type;
typedef typename mpl::select_type<choose_t2, T2, T1>::type type;
};
};
typedef mpl::type_list<
char,short,int,long,float,double,long double
char,short,int,long, float,double,long double
,void*
,void(*)()
,void (alignment_dummy::*)()
, char (alignment_dummy::*)
>
>::type
align_types;
#endif // EDG is too slow
#endif // EDG is too slow
template <class Align, std::size_t size>
union aligned_storage
{
@@ -148,10 +149,27 @@ namespace detail
typedef typename loop::state align_t;
#else
typedef typename remove_cv<typename remove_reference<Reference>::type>::type referent;
// The Python source makes the assumption that double has
// maximal alignment anyway
typedef double align_t;
// maximal alignment, but that fails on some platforms
BOOST_STATIC_CONSTANT(
std::size_t, target_align = alignment_of<referent>::value);
// Here we make some assumptions and leave out some possible
// types worth checking, but this should work most of the time.
typedef typename mpl::select_type<
is_POD<referent>::value
, referent
, typename mpl::select_type<
alignment_of<long>::value >= target_align
, long
, typename mpl::select_type<
alignment_of<double>::value >= target_align
, double
, long double>::type
>::type
>::type align_t;
#endif
BOOST_STATIC_CONSTANT(std::size_t, alignment1 = alignment_of<align_t>::value);
BOOST_STATIC_CONSTANT(std::size_t, alignment2 = referent_alignment<Reference>::value);