67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/*=============================================================================
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Copyright (c) 2005-2007 Dan Marsden
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Copyright (c) 2005-2007 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef PHOENIX_STATEMENT_THROW_HPP
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#define PHOENIX_STATEMENT_THROW_HPP
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#include <boost/spirit/home/phoenix/core/actor.hpp>
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#include <boost/spirit/home/phoenix/core/composite.hpp>
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#include <boost/spirit/home/phoenix/core/compose.hpp>
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#include <boost/mpl/bool.hpp>
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namespace boost { namespace phoenix {
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struct throw_new_eval
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{
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template<typename Env, typename ThrowExpr>
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struct result
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{
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typedef void type;
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};
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template<typename Rt, typename Env, typename ThrowExpr>
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static void
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eval(const Env& env, ThrowExpr& throwExpr)
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{
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throw throwExpr.eval(env);
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}
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};
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struct throw_again_eval
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{
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typedef mpl::false_ no_nullary;
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template<typename Env>
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struct result
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{
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typedef void type;
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};
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template<typename Env>
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void eval(const Env&) const
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{
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throw;
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}
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};
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inline actor<throw_again_eval> throw_()
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{
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return throw_again_eval();
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}
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template<typename Actor>
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actor<typename as_composite<throw_new_eval, Actor>::type>
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throw_(const Actor& a)
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{
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return compose<throw_new_eval>(a);
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}
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}}
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#endif
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