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is_placeholder, is_bind_expression added.

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[SVN r34468]
This commit is contained in:
Peter Dimov
2006-07-06 13:47:26 +00:00
parent c69a4ad382
commit bfe10df38a
6 changed files with 177 additions and 2 deletions
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include/boost/bind.hpp
+38
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@@ -25,6 +25,7 @@
#include <boost/ref.hpp>
#include <boost/mem_fn.hpp>
#include <boost/type.hpp>
#include <boost/is_placeholder.hpp>
#include <boost/bind/arg.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/visit_each.hpp>
@@ -933,11 +934,32 @@ namespace _bi
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) || (__SUNPRO_CC >= 0x530)
#if 0
template<class T> struct add_value
{
typedef _bi::value<T> type;
};
#else
template< class T, int I > struct add_value_2
{
typedef boost::arg<I> type;
};
template< class T > struct add_value_2< T, 0 >
{
typedef _bi::value< T > type;
};
template<class T> struct add_value
{
typedef typename add_value_2< T, boost::is_placeholder< T >::value >::type type;
};
#endif
template<class T> struct add_value< value<T> >
{
typedef _bi::value<T> type;
@@ -1194,6 +1216,22 @@ template<class V, class R, class F, class L> void visit_each( V & v, _bi::bind_t
#endif
// is_bind_expression
template< class T > struct is_bind_expression
{
enum _vt { value = 0 };
};
#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
template< class R, class F, class L > struct is_bind_expression< _bi::bind_t< R, F, L > >
{
enum _vt { value = 1 };
};
#endif
// bind
#ifndef BOOST_BIND