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1 | /* | |
2 | * Copyright Andrey Semashev 2007 - 2015. | |
3 | * Distributed under the Boost Software License, Version 1.0. | |
4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
5 | * http://www.boost.org/LICENSE_1_0.txt) | |
6 | */ | |
7 | /*! | |
8 | * \file is_in_range.hpp | |
9 | * \author Andrey Semashev | |
10 | * \date 02.09.2012 | |
11 | * | |
12 | * The header contains implementation of an \c is_in_range predicate in template expressions. | |
13 | */ | |
14 | ||
15 | #ifndef BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_ | |
16 | #define BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_ | |
17 | ||
18 | #include <utility> | |
19 | #include <boost/phoenix/core/actor.hpp> | |
20 | #include <boost/log/detail/config.hpp> | |
21 | #include <boost/log/detail/embedded_string_type.hpp> | |
22 | #include <boost/log/detail/unary_function_terminal.hpp> | |
23 | #include <boost/log/detail/attribute_predicate.hpp> | |
24 | #include <boost/log/expressions/attr_fwd.hpp> | |
25 | #include <boost/log/expressions/keyword_fwd.hpp> | |
26 | #include <boost/log/attributes/attribute_name.hpp> | |
27 | #include <boost/log/attributes/fallback_policy.hpp> | |
28 | #include <boost/log/utility/functional/in_range.hpp> | |
29 | #include <boost/log/detail/header.hpp> | |
30 | ||
31 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
32 | #pragma once | |
33 | #endif | |
34 | ||
35 | namespace boost { | |
36 | ||
37 | BOOST_LOG_OPEN_NAMESPACE | |
38 | ||
39 | namespace expressions { | |
40 | ||
41 | /*! | |
42 | * The predicate checks if the attribute value contains a substring. The attribute value is assumed to be of a string type. | |
43 | */ | |
44 | #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) | |
45 | ||
46 | template< typename T, typename BoundaryT, typename FallbackPolicyT = fallback_to_none > | |
47 | using attribute_is_in_range = aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT >; | |
48 | ||
49 | #else // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) | |
50 | ||
51 | template< typename T, typename BoundaryT, typename FallbackPolicyT = fallback_to_none > | |
52 | class attribute_is_in_range : | |
53 | public aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT > | |
54 | { | |
55 | typedef aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT > base_type; | |
56 | ||
57 | public: | |
58 | /*! | |
59 | * Initializing constructor | |
60 | * | |
61 | * \param name Attribute name | |
62 | * \param boundaries The expected attribute value boundaries | |
63 | */ | |
64 | attribute_is_in_range(attribute_name const& name, std::pair< BoundaryT, BoundaryT > const& boundaries) : base_type(name, boundaries) | |
65 | { | |
66 | } | |
67 | ||
68 | /*! | |
69 | * Initializing constructor | |
70 | * | |
71 | * \param name Attribute name | |
72 | * \param boundaries The expected attribute value boundaries | |
73 | * \param arg Additional parameter for the fallback policy | |
74 | */ | |
75 | template< typename U > | |
76 | attribute_is_in_range(attribute_name const& name, std::pair< BoundaryT, BoundaryT > const& boundaries, U const& arg) : base_type(name, boundaries, arg) | |
77 | { | |
78 | } | |
79 | }; | |
80 | ||
81 | #endif // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) | |
82 | ||
83 | /*! | |
84 | * The function generates a terminal node in a template expression. The node will check if the attribute value | |
85 | * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>. | |
86 | */ | |
87 | template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename BoundaryT > | |
88 | BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_is_in_range< T, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type, FallbackPolicyT > > > | |
89 | is_in_range(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& attr, BoundaryT const& least, BoundaryT const& most) | |
90 | { | |
91 | typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type; | |
92 | typedef aux::unary_function_terminal< attribute_is_in_range< T, boundary_type, FallbackPolicyT > > terminal_type; | |
93 | ActorT< terminal_type > act = {{ terminal_type(attr.get_name(), std::pair< boundary_type, boundary_type >(least, most), attr.get_fallback_policy()) }}; | |
94 | return act; | |
95 | } | |
96 | ||
97 | /*! | |
98 | * The function generates a terminal node in a template expression. The node will check if the attribute value | |
99 | * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>. | |
100 | */ | |
101 | template< typename DescriptorT, template< typename > class ActorT, typename BoundaryT > | |
102 | BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_is_in_range< typename DescriptorT::value_type, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type > > > | |
103 | is_in_range(attribute_keyword< DescriptorT, ActorT > const&, BoundaryT const& least, BoundaryT const& most) | |
104 | { | |
105 | typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type; | |
106 | typedef aux::unary_function_terminal< attribute_is_in_range< typename DescriptorT::value_type, boundary_type > > terminal_type; | |
107 | ActorT< terminal_type > act = {{ terminal_type(DescriptorT::get_name(), std::pair< boundary_type, boundary_type >(least, most)) }}; | |
108 | return act; | |
109 | } | |
110 | ||
111 | /*! | |
112 | * The function generates a terminal node in a template expression. The node will check if the attribute value | |
113 | * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>. | |
114 | */ | |
115 | template< typename T, typename BoundaryT > | |
116 | BOOST_FORCEINLINE phoenix::actor< aux::unary_function_terminal< attribute_is_in_range< T, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type > > > | |
117 | is_in_range(attribute_name const& name, BoundaryT const& least, BoundaryT const& most) | |
118 | { | |
119 | typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type; | |
120 | typedef aux::unary_function_terminal< attribute_is_in_range< T, boundary_type > > terminal_type; | |
121 | phoenix::actor< terminal_type > act = {{ terminal_type(name, std::pair< boundary_type, boundary_type >(least, most)) }}; | |
122 | return act; | |
123 | } | |
124 | ||
125 | } // namespace expressions | |
126 | ||
127 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
128 | ||
129 | } // namespace boost | |
130 | ||
131 | #include <boost/log/detail/footer.hpp> | |
132 | ||
133 | #endif // BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_ |