author | William Roberts <williamr@symbian.org> |
Thu, 22 Jul 2010 16:48:56 +0100 | |
branch | GCC_SURGE |
changeset 45 | 4b03adbd26ca |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* |
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* |
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* Copyright (c) 2004 |
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* Francois Dumont |
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* |
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* This material is provided "as is", with absolutely no warranty expressed |
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* or implied. Any use is at your own risk. |
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* |
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* Permission to use or copy this software for any purpose is hereby granted |
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* without fee, provided the above notices are retained on all copies. |
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* Permission to modify the code and to distribute modified code is granted, |
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* provided the above notices are retained, and a notice that the code was |
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* modified is included with the above copyright notice. |
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* |
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*/ |
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|
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#ifndef _STLP_BOOST_TYPE_TRAITS_H |
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#define _STLP_BOOST_TYPE_TRAITS_H |
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#include <boost/type_traits/is_integral.hpp> |
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#include <boost/type_traits/is_float.hpp> |
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#include <boost/type_traits/has_trivial_constructor.hpp> |
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#include <boost/type_traits/has_trivial_copy.hpp> |
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#include <boost/type_traits/has_trivial_assign.hpp> |
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#include <boost/type_traits/has_trivial_destructor.hpp> |
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#include <boost/type_traits/is_pod.hpp> |
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#include <boost/type_traits/is_pointer.hpp> |
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#include <boost/type_traits/is_reference.hpp> |
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#include <boost/type_traits/remove_cv.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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|
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/* |
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* This file mostly wraps boost type_traits in the STLport type_traits. |
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* When checking a type traits like trivial assign operator for instance |
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* both the boost value and STLport values has to be taken into account |
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* as we don't know what the user might have prefer, specializing the boost |
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* type traits or the STLport one. |
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*/ |
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_STLP_BEGIN_NAMESPACE |
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template <class _Tp> struct _IsRef { |
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enum { _Is = ::boost::is_reference<_Tp>::value }; |
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typedef typename __bool2type<_Is>::_Ret _Ret; |
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}; |
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template <class _Tp> struct _IsPtr { |
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enum { is_pointer = ::boost::is_pointer<_Tp>::value }; |
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typedef typename __bool2type<is_pointer>::_Ret _Ret; |
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}; |
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template <class _Tp> struct _IsIntegral { |
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enum { is_integral = ::boost::is_integral<_Tp>::value }; |
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typedef typename __bool2type<is_integral>::_Ret _Ret; |
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}; |
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template <class _Tp> struct _IsRational { |
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enum { is_float = ::boost::is_float<_Tp>::value }; |
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typedef typename __bool2type<is_float>::_Ret _Ret; |
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}; |
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template <class _Tp> |
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struct __type_traits { |
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enum { trivial_constructor = ::boost::has_trivial_constructor<_Tp>::value }; |
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typedef typename __bool2type<trivial_constructor>::_Ret has_trivial_default_constructor; |
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enum { trivial_copy = ::boost::has_trivial_copy<_Tp>::value }; |
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typedef typename __bool2type<trivial_copy>::_Ret has_trivial_copy_constructor; |
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enum { trivial_assign = ::boost::has_trivial_assign<_Tp>::value }; |
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typedef typename __bool2type<trivial_assign>::_Ret has_trivial_assignment_operator; |
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enum { trivial_destructor = ::boost::has_trivial_destructor<_Tp>::value }; |
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typedef typename __bool2type<trivial_destructor>::_Ret has_trivial_destructor; |
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enum { pod = ::boost::is_pod<_Tp>::value }; |
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typedef typename __bool2type<pod>::_Ret is_POD_type; |
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}; |
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template <class _Tp1, class _Tp2> |
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struct _TrivialCopy { |
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typedef typename ::boost::remove_cv<_Tp1>::type uncv1; |
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typedef typename ::boost::remove_cv<_Tp2>::type uncv2; |
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enum { same = ::boost::is_same<uncv1, uncv2>::value }; |
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typedef typename __bool2type<same>::_Ret _Same; |
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enum { boost_trivial_assign = ::boost::has_trivial_assign<uncv1>::value }; |
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typedef typename __bool2type<boost_trivial_assign>::_Ret _BoostTrivialAssign; |
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typedef typename __type_traits<uncv1>::has_trivial_assignment_operator _STLPTrivialAssign; |
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typedef typename _Lor2<_BoostTrivialAssign, _STLPTrivialAssign>::_Ret _TrivialAssign; |
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typedef typename _Land2<_Same, _TrivialAssign>::_Ret _Type; |
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static _Type _Answer() { return _Type(); } |
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}; |
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template <class _Tp1, class _Tp2> |
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struct _TrivialUCopy { |
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typedef typename ::boost::remove_cv<_Tp1>::type uncv1; |
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typedef typename ::boost::remove_cv<_Tp2>::type uncv2; |
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enum { same = ::boost::is_same<uncv1, uncv2>::value }; |
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typedef typename __bool2type<same>::_Ret _Same; |
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enum { boost_trivial_copy = ::boost::has_trivial_copy<uncv1>::value }; |
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typedef typename __bool2type<boost_trivial_copy>::_Ret _BoostTrivialCopy; |
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typedef typename __type_traits<uncv1>::has_trivial_copy_constructor _STLPTrivialCopy; |
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typedef typename _Lor2<_BoostTrivialCopy, _STLPTrivialCopy>::_Ret _TrivialCopy; |
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typedef typename _Land2<_Same, _TrivialCopy>::_Ret _Type; |
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static _Type _Answer() { return _Type(); } |
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}; |
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template <class _Tp> |
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struct _DefaultZeroValue { |
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enum { is_integral = ::boost::is_integral<_Tp>::value }; |
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typedef typename __bool2type<is_integral>::_Ret _IsIntegral; |
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enum { is_float = ::boost::is_float<_Tp>::value }; |
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typedef typename __bool2type<is_float>::_Ret _IsFloat; |
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enum { is_pointer = ::boost::is_pointer<_Tp>::value }; |
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typedef typename __bool2type<is_pointer>::_Ret _IsPointer; |
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typedef typename _Lor3<_IsIntegral, _IsFloat, _IsPointer>::_Ret _Ret; |
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}; |
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template <class _Tp> |
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struct _TrivialInit { |
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typedef typename ::boost::remove_cv<_Tp>::type uncv; |
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enum { boost_trivial_constructor = ::boost::has_trivial_constructor<uncv>::value }; |
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typedef typename __bool2type<boost_trivial_constructor>::_Ret _BoostTrivialInit; |
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typedef typename __type_traits<uncv>::has_trivial_default_constructor _STLPTrivialInit; |
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typedef typename _Lor2<_BoostTrivialInit, _STLPTrivialInit>::_Ret _Tr1; |
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typedef typename _DefaultZeroValue<_Tp>::_Ret _Tr2; |
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typedef typename _Not<_Tr2>::_Ret _Tr3; |
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typedef typename _Land2<_Tr1, _Tr3>::_Ret _Ret; |
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static _Ret _Answer() { return _Ret(); } |
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}; |
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_STLP_END_NAMESPACE |
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#endif /* _STLP_BOOST_TYPE_TRAITS_H */ |