1/*==============================================================================
2 Copyright (c) 2001-2010 Joel de Guzman
3 Copyright (c) 2010 Eric Niebler
4 Copyright (c) 2010-2011 Thomas Heller
5
6 Distributed under the Boost Software License, Version 1.0. (See accompanying
7 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
8==============================================================================*/
9#ifndef BOOST_PHOENIX_CORE_ARGUMENT_HPP
10#define BOOST_PHOENIX_CORE_ARGUMENT_HPP
11
12#include <boost/phoenix/core/limits.hpp>
13#include <boost/phoenix/core/actor.hpp>
14#include <boost/phoenix/core/expression.hpp>
15#include <boost/phoenix/core/terminal.hpp>
16#include <boost/mpl/int.hpp>
17
18namespace boost { namespace phoenix
19{
20 ////////////////////////////////////////////////////////////////////////////
21 //
22 // argument
23 //
24 // function for evaluating argument placeholders like: _1
25 //
26 ////////////////////////////////////////////////////////////////////////////
27
28 template <int I>
29 struct argument
30 //: mpl::int_<I>
31 {
32 typedef typename mpl::int_<I>::value_type value_type;
33 static const value_type value = mpl::int_<I>::value;
34
35 bool operator==(argument) const
36 {
37 return true;
38 }
39
40 template <int I2>
41 bool operator==(argument<I2>) const
42 {
43 return false;
44 }
45 };
46}}
47
48namespace boost {
49 template <int I>
50 struct is_placeholder<phoenix::argument<I> >
51 : mpl::int_<I>
52 {};
53}
54
55namespace boost { namespace phoenix
56{
57 namespace expression
58 {
59 template <int I>
60 struct argument
61 : expression::terminal<phoenix::argument<I> >
62 {
63 typedef typename expression::terminal<phoenix::argument<I> >::type type;
64 static const type make()
65 {
66 type const e = {{{}}};
67 return e;
68 }
69 };
70 }
71
72#if !defined(BOOST_PHOENIX_DONT_USE_PREPROCESSED_FILES)
73
74#include <boost/phoenix/core/detail/cpp03/preprocessed/argument.hpp>
75
76#else
77
78#if !defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
79#include <boost/phoenix/core/detail/argument.hpp>
80#else
81
82#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
83#pragma wave option(preserve: 2, line: 0, output: "detail/cpp03/preprocessed/argument_predefined_" BOOST_PHOENIX_LIMIT_STR ".hpp")
84#endif
85/*==============================================================================
86 Copyright (c) 2001-2010 Joel de Guzman
87 Copyright (c) 2010-2011 Thomas Heller
88
89 Distributed under the Boost Software License, Version 1.0. (See accompanying
90 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
91==============================================================================*/
92
93#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
94#pragma wave option(preserve: 1)
95#endif
96
97#ifdef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
98#undef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
99#define BOOST_PHOENIX_NO_PREDEFINED_TERMINALS_RESTORE
100#endif
101
102#include <boost/phoenix/core/detail/argument.hpp>
103
104#ifndef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS_RESTORE
105#define BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
106#undef BOOST_PHOENIX_NO_PREDEFINED_TERIMINALS_RESTORE
107#endif
108
109#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
110#pragma wave option(output: null)
111#endif
112
113#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
114#pragma wave option(preserve: 2, line: 0, output: "detail/cpp03/preprocessed/argument_no_predefined_" BOOST_PHOENIX_LIMIT_STR ".hpp")
115#endif
116/*==============================================================================
117 Copyright (c) 2001-2010 Joel de Guzman
118 Copyright (c) 2010-2011 Thomas Heller
119
120 Distributed under the Boost Software License, Version 1.0. (See accompanying
121 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
122==============================================================================*/
123
124#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
125#pragma wave option(preserve: 1)
126#endif
127
128#ifndef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
129#define BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
130#define BOOST_PHOENIX_NO_PREDEFINED_TERMINALS_RESTORE
131#endif
132
133#include <boost/phoenix/core/detail/argument.hpp>
134
135#ifndef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS_RESTORE
136#undef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
137#undef BOOST_PHOENIX_NO_PREDEFINED_TERIMINALS_RESTORE
138#endif
139
140#if defined(__WAVE__) && defined(BOOST_PHOENIX_CREATE_PREPROCESSED_FILES)
141#pragma wave option(output: null)
142#endif
143
144#endif
145
146#endif
147
148}}
149
150#endif
151