/*============================================================================= | |
Copyright (c) 2005-2007 Joel de Guzman | |
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 PHOENIX_DETAIL_LOCAL_REFERENCE_HPP | |
#define PHOENIX_DETAIL_LOCAL_REFERENCE_HPP | |
#include <boost/utility/addressof.hpp> | |
namespace boost { namespace phoenix { namespace detail | |
{ | |
template <typename T> | |
struct local_reference | |
{ | |
typedef T type; | |
explicit local_reference(T& t): t_(boost::addressof(t)) {} | |
operator T& () const { return *t_; } | |
local_reference& operator=(T const& x) { *t_ = x; return *this; } | |
local_reference const& operator=(T const& x) const { *t_ = x; return *this; } | |
T& get() const { return *t_; } | |
T* get_pointer() const { return t_; } | |
private: | |
T* t_; | |
}; | |
template <typename T> | |
struct unwrap_local_reference | |
{ | |
typedef T type; // T should be a reference | |
}; | |
template <typename T> | |
struct unwrap_local_reference<local_reference<T> > | |
{ | |
typedef T type; // unwrap the reference; T is a value | |
}; | |
}}} | |
#endif |