/*============================================================================= | |
Copyright (c) 2005-2007 Dan Marsden | |
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_STATEMENT_THROW_HPP | |
#define PHOENIX_STATEMENT_THROW_HPP | |
#include <boost/spirit/home/phoenix/core/actor.hpp> | |
#include <boost/spirit/home/phoenix/core/composite.hpp> | |
#include <boost/spirit/home/phoenix/core/compose.hpp> | |
#include <boost/mpl/bool.hpp> | |
namespace boost { namespace phoenix { | |
struct throw_new_eval | |
{ | |
template<typename Env, typename ThrowExpr> | |
struct result | |
{ | |
typedef void type; | |
}; | |
template<typename Rt, typename Env, typename ThrowExpr> | |
static void | |
eval(const Env& env, ThrowExpr& throwExpr) | |
{ | |
throw throwExpr.eval(env); | |
} | |
}; | |
struct throw_again_eval | |
{ | |
typedef mpl::false_ no_nullary; | |
template<typename Env> | |
struct result | |
{ | |
typedef void type; | |
}; | |
template<typename Env> | |
void eval(const Env&) const | |
{ | |
throw; | |
} | |
}; | |
inline actor<throw_again_eval> throw_() | |
{ | |
return throw_again_eval(); | |
} | |
template<typename Actor> | |
actor<typename as_composite<throw_new_eval, Actor>::type> | |
throw_(const Actor& a) | |
{ | |
return compose<throw_new_eval>(a); | |
} | |
}} | |
#endif |