1 /*=============================================================================
2     Copyright (c) 2001-2011 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 #if !defined(SPIRIT_WHAT_FUNCTION_APRIL_22_2007_0236PM)
8 #define SPIRIT_WHAT_FUNCTION_APRIL_22_2007_0236PM
9 
10 #if defined(_MSC_VER)
11 #pragma once
12 #endif
13 
14 #include <string>
15 #include <boost/spirit/home/support/info.hpp>
16 #include <boost/detail/workaround.hpp>
17 
18 namespace boost { namespace spirit { namespace detail
19 {
20     template <typename Context>
21     struct what_function
22     {
what_functionboost::spirit::detail::what_function23         what_function(info& what_, Context& context_)
24           : what(what_), context(context_)
25         {
26             what.value = std::list<info>();
27         }
28 
29         template <typename Component>
operator ()boost::spirit::detail::what_function30         void operator()(Component const& component) const
31         {
32 #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600))
33             component; // suppresses warning: C4100: 'component' : unreferenced formal parameter
34 #endif
35             boost::get<std::list<info> >(what.value).
36                 push_back(component.what(context));
37         }
38 
39         info& what;
40         Context& context;
41 
42     private:
43         // silence MSVC warning C4512: assignment operator could not be generated
44         what_function& operator= (what_function const&);
45     };
46 }}}
47 
48 #endif
49