1// Copyright (c) 2001-2011 Hartmut Kaiser
2//
3// Distributed under the Boost Software License, Version 1.0. (See accompanying
4// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6#ifndef BOOST_SPIRIT_KARMA_DIRECTIVE_STRICT_RELAXED_HPP
7#define BOOST_SPIRIT_KARMA_DIRECTIVE_STRICT_RELAXED_HPP
8
9#if defined(_MSC_VER)
10#pragma once
11#endif
12
13#include <boost/spirit/home/support/common_terminals.hpp>
14#include <boost/spirit/home/support/modify.hpp>
15#include <boost/spirit/home/karma/domain.hpp>
16#include <boost/spirit/home/karma/meta_compiler.hpp>
17
18namespace boost { namespace spirit
19{
20 ///////////////////////////////////////////////////////////////////////////
21 // Enablers
22 ///////////////////////////////////////////////////////////////////////////
23 template <>
24 struct use_directive<karma::domain, tag::strict> // enables strict[]
25 : mpl::true_ {};
26
27 template <>
28 struct use_directive<karma::domain, tag::relaxed> // enables relaxed[]
29 : mpl::true_ {};
30
31 ///////////////////////////////////////////////////////////////////////////
32 template <>
33 struct is_modifier_directive<karma::domain, tag::strict>
34 : mpl::true_ {};
35
36 template <>
37 struct is_modifier_directive<karma::domain, tag::relaxed>
38 : mpl::true_ {};
39
40 ///////////////////////////////////////////////////////////////////////////
41 // Don't add tag::strict or tag::relaxed if there is already one of those
42 // in the modifier list
43 template <typename Current>
44 struct compound_modifier<Current, tag::strict
45 , typename enable_if<has_modifier<Current, tag::relaxed> >::type>
46 : Current
47 {
48 compound_modifier()
49 : Current() {}
50
51 compound_modifier(Current const& current, tag::strict const&)
52 : Current(current) {}
53 };
54
55 template <typename Current>
56 struct compound_modifier<Current, tag::relaxed
57 , typename enable_if<has_modifier<Current, tag::strict> >::type>
58 : Current
59 {
60 compound_modifier()
61 : Current() {}
62
63 compound_modifier(Current const& current, tag::relaxed const&)
64 : Current(current) {}
65 };
66
67 namespace karma
68 {
69#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
70 using boost::spirit::strict;
71 using boost::spirit::relaxed;
72#endif
73 using boost::spirit::strict_type;
74 using boost::spirit::relaxed_type;
75 }
76}}
77
78#endif
79

source code of boost/libs/spirit/include/boost/spirit/home/karma/directive/strict_relaxed.hpp