1 /*=============================================================================
2 Copyright (c) 2001-2007 Joel de Guzman
3 Copyright (c) 2004 Daniel Wallin
5 Distributed under the Boost Software License, Version 1.0. (See accompanying
6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 ==============================================================================*/
8 #ifndef PHOENIX_SCOPE_LOCAL_VARIABLE_HPP
9 #define PHOENIX_SCOPE_LOCAL_VARIABLE_HPP
11 #include <boost/spirit/home/phoenix/core/limits.hpp>
12 #include <boost/spirit/home/phoenix/detail/local_reference.hpp>
13 #include <boost/spirit/home/phoenix/scope/detail/local_variable.hpp>
14 #include <boost/spirit/home/phoenix/core/actor.hpp>
15 #include <boost/mpl/bool.hpp>
17 namespace boost { namespace phoenix
19 template <typename Key>
24 // This will prevent actor::operator()() from kicking in.
25 // Actually, we do not need all actor::operator()s for
26 // all arities, but this will suffice. The nullary
27 // actor::operator() is particularly troublesome because
28 // it is always eagerly evaluated by the compiler.
29 typedef mpl::true_ no_nullary;
31 template <typename Env>
32 struct result : detail::apply_local<local_variable<Key>, Env> {};
34 template <typename Env>
35 typename result<Env>::type
36 eval(Env const& env) const
38 typedef typename result<Env>::type return_type;
40 detail::get_index<typename Env::map_type, Key>::type
42 typedef detail::eval_local<Key> eval_local;
44 return eval_local::template get<return_type>(
50 // silence MSVC warning C4512: assignment operator could not be generated
51 local_variable& operator= (local_variable const&);
56 actor<local_variable<struct _a_key> > const _a
57 = local_variable<struct _a_key>();
58 actor<local_variable<struct _b_key> > const _b
59 = local_variable<struct _b_key>();
60 actor<local_variable<struct _c_key> > const _c
61 = local_variable<struct _c_key>();
62 actor<local_variable<struct _d_key> > const _d
63 = local_variable<struct _d_key>();
64 actor<local_variable<struct _e_key> > const _e
65 = local_variable<struct _e_key>();
66 actor<local_variable<struct _f_key> > const _f
67 = local_variable<struct _f_key>();
68 actor<local_variable<struct _g_key> > const _g
69 = local_variable<struct _g_key>();
70 actor<local_variable<struct _h_key> > const _h
71 = local_variable<struct _h_key>();
72 actor<local_variable<struct _i_key> > const _i
73 = local_variable<struct _i_key>();
74 actor<local_variable<struct _j_key> > const _j
75 = local_variable<struct _j_key>();
76 actor<local_variable<struct _k_key> > const _k
77 = local_variable<struct _k_key>();
78 actor<local_variable<struct _l_key> > const _l
79 = local_variable<struct _l_key>();
80 actor<local_variable<struct _m_key> > const _m
81 = local_variable<struct _m_key>();
82 actor<local_variable<struct _n_key> > const _n
83 = local_variable<struct _n_key>();
84 actor<local_variable<struct _o_key> > const _o
85 = local_variable<struct _o_key>();
86 actor<local_variable<struct _p_key> > const _p
87 = local_variable<struct _p_key>();
88 actor<local_variable<struct _q_key> > const _q
89 = local_variable<struct _q_key>();
90 actor<local_variable<struct _r_key> > const _r
91 = local_variable<struct _r_key>();
92 actor<local_variable<struct _s_key> > const _s
93 = local_variable<struct _s_key>();
94 actor<local_variable<struct _t_key> > const _t
95 = local_variable<struct _t_key>();
96 actor<local_variable<struct _u_key> > const _u
97 = local_variable<struct _u_key>();
98 actor<local_variable<struct _v_key> > const _v
99 = local_variable<struct _v_key>();
100 actor<local_variable<struct _w_key> > const _w
101 = local_variable<struct _w_key>();
102 actor<local_variable<struct _x_key> > const _x
103 = local_variable<struct _x_key>();
104 actor<local_variable<struct _y_key> > const _y
105 = local_variable<struct _y_key>();
106 actor<local_variable<struct _z_key> > const _z
107 = local_variable<struct _z_key>();