/Src/Dependencies/Boost/boost/spirit/home/phoenix/object/construct.hpp

 1/*=============================================================================
 2    Copyright (c) 2001-2007 Joel de Guzman
 3
 4    Distributed under the Boost Software License, Version 1.0. (See accompanying 
 5    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 6==============================================================================*/
 7#ifndef PHOENIX_OBJECT_CONSTRUCT_HPP
 8#define PHOENIX_OBJECT_CONSTRUCT_HPP
 9
10#include <boost/spirit/home/phoenix/core/compose.hpp>
11#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
12
13namespace boost { namespace phoenix
14{
15    namespace detail
16    {
17        template <typename T>
18        struct construct_eval
19        {
20            template <typename Env,
21                BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
22                    PHOENIX_COMPOSITE_LIMIT, typename T, fusion::void_)>
23            struct result
24            {
25                typedef T type;
26            };
27
28            template <typename RT, typename Env>
29            static RT
30            eval(Env const& env)
31            {
32                return RT();
33            }
34
35            template <typename RT, typename Env, typename A0>
36            static RT
37            eval(Env const& env, A0& _0)
38            {
39                return RT(_0.eval(env));
40            }
41
42            template <typename RT
43                , typename Env, typename A0, typename A1>
44            static RT
45            eval(Env const& env, A0& _0, A1& _1)
46            {
47                return RT(_0.eval(env), _1.eval(env));
48            }
49
50            //  Bring in the rest of the evals
51            #include <boost/spirit/home/phoenix/object/detail/construct_eval.hpp>
52        };
53    }
54
55    template <typename T>
56    inline actor<typename as_composite<detail::construct_eval<T> >::type>
57    construct()
58    {
59        return compose<detail::construct_eval<T> >();
60    }
61
62    template <typename T, typename A0>
63    inline actor<typename as_composite<detail::construct_eval<T>, A0>::type>
64    construct(A0 const& _0)
65    {
66        return compose<detail::construct_eval<T> >(_0);
67    }
68
69    template <typename T, typename A0, typename A1>
70    inline actor<typename as_composite<detail::construct_eval<T>, A0, A1>::type>
71    construct(A0 const& _0, A1 const& _1)
72    {
73        return compose<detail::construct_eval<T> >(_0, _1);
74    }
75
76    //  Bring in the rest of the new_ functions
77    #include <boost/spirit/home/phoenix/object/detail/construct.hpp>
78}}
79
80#endif