You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
42 lines
1.2 KiB
42 lines
1.2 KiB
/*============================================================================= |
|
Copyright (c) 2001-2007 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_OBJECT_DYNAMIC_CAST_HPP |
|
#define PHOENIX_OBJECT_DYNAMIC_CAST_HPP |
|
|
|
#include <boost/spirit/home/phoenix/core/compose.hpp> |
|
|
|
namespace boost { namespace phoenix |
|
{ |
|
namespace impl |
|
{ |
|
template <typename T> |
|
struct dynamic_cast_eval |
|
{ |
|
template <typename Env, typename U> |
|
struct result |
|
{ |
|
typedef T type; |
|
}; |
|
|
|
template <typename RT, typename Env, typename U> |
|
static RT |
|
eval(Env const& env, U& obj) |
|
{ |
|
return dynamic_cast<RT>(obj.eval(env)); |
|
} |
|
}; |
|
} |
|
|
|
template <typename T, typename U> |
|
inline actor<typename as_composite<impl::dynamic_cast_eval<T>, U>::type> |
|
dynamic_cast_(U const& obj) |
|
{ |
|
return compose<impl::dynamic_cast_eval<T> >(obj); |
|
} |
|
}} |
|
|
|
#endif
|
|
|