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1 | // Copyright (c) 2001-2011 Joel de Guzman | |
2 | // Copyright (c) 2001-2011 Hartmut Kaiser | |
3 | // Copyright (c) 2009 Francois Barel | |
4 | // | |
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 | #if !defined(BOOST_SPIRIT_KARMA_PARAMETERIZED_AUGUST_09_2009_0601AM) | |
9 | #define BOOST_SPIRIT_KARMA_PARAMETERIZED_AUGUST_09_2009_0601AM | |
10 | ||
11 | #if defined(_MSC_VER) | |
12 | #pragma once | |
13 | #endif | |
14 | ||
15 | #include <boost/ref.hpp> | |
16 | ||
17 | #include <boost/spirit/home/support/handles_container.hpp> | |
18 | #include <boost/spirit/home/karma/generator.hpp> | |
19 | ||
20 | namespace boost { namespace spirit { namespace karma | |
21 | { | |
22 | /////////////////////////////////////////////////////////////////////////// | |
23 | // parameterized_nonterminal: generator representing the invocation of a | |
24 | // nonterminal, passing inherited attributes | |
25 | /////////////////////////////////////////////////////////////////////////// | |
26 | template <typename Subject, typename Params> | |
27 | struct parameterized_nonterminal | |
28 | : generator<parameterized_nonterminal<Subject, Params> > | |
29 | { | |
30 | typedef mpl::int_<generator_properties::all_properties> properties; | |
31 | ||
32 | parameterized_nonterminal(Subject const& subject, Params const& params) | |
33 | : ref(subject), params(params) | |
34 | { | |
35 | } | |
36 | ||
37 | template <typename Context, typename Unused> | |
38 | struct attribute | |
39 | // Forward to subject. | |
40 | : Subject::template attribute<Context, Unused> {}; | |
41 | ||
42 | template <typename OutputIterator, typename Context, typename Delimiter | |
43 | , typename Attribute> | |
44 | bool generate(OutputIterator& sink, Context& context | |
45 | , Delimiter const& delim, Attribute const& attr) const | |
46 | { | |
47 | // Forward to subject, passing the additional | |
48 | // params argument to generate. | |
49 | return ref.get().generate(sink, context, delim, attr, params); | |
50 | } | |
51 | ||
52 | template <typename Context> | |
53 | info what(Context& context) const | |
54 | { | |
55 | // Forward to subject. | |
56 | return ref.get().what(context); | |
57 | } | |
58 | ||
59 | boost::reference_wrapper<Subject const> ref; | |
60 | Params params; | |
61 | }; | |
62 | }}} | |
63 | ||
64 | namespace boost { namespace spirit { namespace traits | |
65 | { | |
66 | /////////////////////////////////////////////////////////////////////////// | |
67 | template <typename Subject, typename Params, typename Attribute | |
68 | , typename Context, typename Iterator> | |
69 | struct handles_container<karma::parameterized_nonterminal<Subject, Params> | |
70 | , Attribute, Context, Iterator> | |
71 | : handles_container<typename remove_const<Subject>::type | |
72 | , Attribute, Context, Iterator> | |
73 | {}; | |
74 | }}} | |
75 | ||
76 | #endif |