boostorg/core
1
0
Fork 1
mirror of https://github.com/boostorg/core.git synced 2025-11-28 21:30:09 +01:00
Code Issues Packages Projects Releases Wiki Activity

Remove mpl::bool_ dependency from ref.hpp, clean up a bit.

Browse Source
This commit is contained in:
Peter Dimov
2014-06-01 03:52:44 +03:00
parent 927f98189d
commit 8ad3288b0b
1 changed files with 63 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
include/boost/ref.hpp
View File

@@ -9,7 +9,6 @@
#include <boost/config.hpp> #include <boost/config.hpp>
#include <boost/utility/addressof.hpp> #include <boost/utility/addressof.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/detail/workaround.hpp> #include <boost/detail/workaround.hpp>
// //
@@ -29,6 +28,8 @@
namespace boost namespace boost
{ {
// reference_wrapper
template<class T> class reference_wrapper template<class T> class reference_wrapper
{ {
public: public:
@@ -47,70 +48,100 @@ private:
T* t_; T* t_;
}; };
// ref
# if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0x581) ) # if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0x581) )
# define BOOST_REF_CONST # define BOOST_REF_CONST
# else # else
# define BOOST_REF_CONST const # define BOOST_REF_CONST const
# endif # endif
template<class T> BOOST_FORCEINLINE reference_wrapper<T> BOOST_REF_CONST ref(T & t) template<class T> BOOST_FORCEINLINE reference_wrapper<T> BOOST_REF_CONST ref( T & t )
{ {
return reference_wrapper<T>(t); return reference_wrapper<T>(t);
} }
template<class T> BOOST_FORCEINLINE reference_wrapper<T const> BOOST_REF_CONST cref(T const & t) // cref
template<class T> BOOST_FORCEINLINE reference_wrapper<T const> BOOST_REF_CONST cref( T const & t )
{ {
return reference_wrapper<T const>(t); return reference_wrapper<T const>(t);
} }
# undef BOOST_REF_CONST # undef BOOST_REF_CONST
// is_reference_wrapper
template<typename T> template<typename T> struct is_reference_wrapper
class is_reference_wrapper
: public mpl::false_
{ {
BOOST_STATIC_CONSTANT( bool, value = false );
}; };
template<typename T> template<typename T> struct is_reference_wrapper< reference_wrapper<T> >
class unwrap_reference {
BOOST_STATIC_CONSTANT( bool, value = true );
};
#if !defined(BOOST_NO_CV_SPECIALIZATIONS)
template<typename T> struct is_reference_wrapper< reference_wrapper<T> const >
{
BOOST_STATIC_CONSTANT( bool, value = true );
};
template<typename T> struct is_reference_wrapper< reference_wrapper<T> volatile >
{
BOOST_STATIC_CONSTANT( bool, value = true );
};
template<typename T> struct is_reference_wrapper< reference_wrapper<T> const volatile >
{
BOOST_STATIC_CONSTANT( bool, value = true );
};
#endif // !defined(BOOST_NO_CV_SPECIALIZATIONS)
// unwrap_reference
template<typename T> struct unwrap_reference
{ {
public:
typedef T type; typedef T type;
}; };
# define AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF(X) \ template<typename T> struct unwrap_reference< reference_wrapper<T> >
template<typename T> \ {
class is_reference_wrapper< X > \ typedef T type;
: public mpl::true_ \ };
{ \
}; \
\
template<typename T> \
class unwrap_reference< X > \
{ \
public: \
typedef T type; \
}; \
/**/
AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF(reference_wrapper<T>)
#if !defined(BOOST_NO_CV_SPECIALIZATIONS) #if !defined(BOOST_NO_CV_SPECIALIZATIONS)
AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF(reference_wrapper<T> const)
AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF(reference_wrapper<T> volatile)
AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF(reference_wrapper<T> const volatile)
#endif
# undef AUX_REFERENCE_WRAPPER_METAFUNCTIONS_DEF template<typename T> struct unwrap_reference< reference_wrapper<T> const >
{
typedef T type;
};
template<typename T> struct unwrap_reference< reference_wrapper<T> volatile >
{
typedef T type;
};
template <class T> BOOST_FORCEINLINE typename unwrap_reference<T>::type& template<typename T> struct unwrap_reference< reference_wrapper<T> const volatile >
unwrap_ref(T& t) {
typedef T type;
};
#endif // !defined(BOOST_NO_CV_SPECIALIZATIONS)
// unwrap_ref
template<class T> BOOST_FORCEINLINE typename unwrap_reference<T>::type& unwrap_ref( T & t )
{ {
return t; return t;
} }
template<class T> BOOST_FORCEINLINE T* get_pointer( reference_wrapper<T> const & r ) // get_pointer
template<class T> BOOST_FORCEINLINE T* get_pointer( reference_wrapper<T> const & r )
{ {
return r.get_pointer(); return r.get_pointer();
} }