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1 | /* |
2 | * Distributed under the Boost Software License, Version 1.0.(See accompanying | |
3 | * file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) | |
4 | * | |
5 | * See http://www.boost.org/libs/iostreams for documentation. | |
6 | ||
7 | * File: boost/iostreams/detail/functional.hpp | |
8 | * Date: Sun Dec 09 05:38:03 MST 2007 | |
9 | * Copyright: 2007-2008 CodeRage, LLC | |
10 | * Author: Jonathan Turkanis | |
11 | * Contact: turkanis at coderage dot com | |
12 | ||
13 | * Defines several function objects and object generators for use with | |
14 | * execute_all() | |
15 | */ | |
16 | ||
17 | #ifndef BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED | |
18 | #define BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED | |
19 | ||
20 | #if defined(_MSC_VER) | |
21 | # pragma once | |
22 | #endif | |
23 | ||
24 | #include <boost/iostreams/close.hpp> | |
25 | #include <boost/iostreams/detail/ios.hpp> // BOOST_IOS | |
26 | ||
27 | namespace boost { namespace iostreams { namespace detail { | |
28 | ||
29 | // Function objects and object generators for invoking | |
30 | // boost::iostreams::close | |
31 | ||
32 | template<typename T> | |
33 | class device_close_operation { | |
34 | public: | |
35 | typedef void result_type; | |
36 | device_close_operation(T& t, BOOST_IOS::openmode which) | |
37 | : t_(t), which_(which) | |
38 | { } | |
39 | void operator()() const { boost::iostreams::close(t_, which_); } | |
40 | private: | |
92f5a8d4 | 41 | BOOST_DELETED_FUNCTION(device_close_operation& operator=(const device_close_operation&)); |
7c673cae FG |
42 | T& t_; |
43 | BOOST_IOS::openmode which_; | |
44 | }; | |
45 | ||
46 | template<typename T, typename Sink> | |
47 | class filter_close_operation { | |
48 | public: | |
49 | typedef void result_type; | |
50 | filter_close_operation(T& t, Sink& snk, BOOST_IOS::openmode which) | |
51 | : t_(t), snk_(snk), which_(which) | |
52 | { } | |
53 | void operator()() const { boost::iostreams::close(t_, snk_, which_); } | |
54 | private: | |
92f5a8d4 | 55 | BOOST_DELETED_FUNCTION(filter_close_operation& operator=(const filter_close_operation&)); |
7c673cae FG |
56 | T& t_; |
57 | Sink& snk_; | |
58 | BOOST_IOS::openmode which_; | |
59 | }; | |
60 | ||
61 | template<typename T> | |
62 | device_close_operation<T> | |
63 | call_close(T& t, BOOST_IOS::openmode which) | |
64 | { return device_close_operation<T>(t, which); } | |
65 | ||
66 | template<typename T, typename Sink> | |
67 | filter_close_operation<T, Sink> | |
68 | call_close(T& t, Sink& snk, BOOST_IOS::openmode which) | |
69 | { return filter_close_operation<T, Sink>(t, snk, which); } | |
70 | ||
71 | // Function objects and object generators for invoking | |
72 | // boost::iostreams::detail::close_all | |
73 | ||
74 | template<typename T> | |
75 | class device_close_all_operation { | |
76 | public: | |
77 | typedef void result_type; | |
78 | device_close_all_operation(T& t) : t_(t) { } | |
79 | void operator()() const { detail::close_all(t_); } | |
80 | private: | |
92f5a8d4 | 81 | BOOST_DELETED_FUNCTION(device_close_all_operation& operator=(const device_close_all_operation&)); |
7c673cae FG |
82 | T& t_; |
83 | }; | |
84 | ||
85 | template<typename T, typename Sink> | |
86 | class filter_close_all_operation { | |
87 | public: | |
88 | typedef void result_type; | |
89 | filter_close_all_operation(T& t, Sink& snk) : t_(t), snk_(snk) { } | |
90 | void operator()() const { detail::close_all(t_, snk_); } | |
91 | private: | |
92f5a8d4 | 92 | BOOST_DELETED_FUNCTION(filter_close_all_operation& operator=(const filter_close_all_operation&)); |
7c673cae FG |
93 | T& t_; |
94 | Sink& snk_; | |
95 | }; | |
96 | ||
97 | template<typename T> | |
98 | device_close_all_operation<T> call_close_all(T& t) | |
99 | { return device_close_all_operation<T>(t); } | |
100 | ||
101 | template<typename T, typename Sink> | |
102 | filter_close_all_operation<T, Sink> | |
103 | call_close_all(T& t, Sink& snk) | |
104 | { return filter_close_all_operation<T, Sink>(t, snk); } | |
105 | ||
106 | // Function object and object generator for invoking a | |
107 | // member function void close(std::ios_base::openmode) | |
108 | ||
109 | template<typename T> | |
110 | class member_close_operation { | |
111 | public: | |
112 | typedef void result_type; | |
113 | member_close_operation(T& t, BOOST_IOS::openmode which) | |
114 | : t_(t), which_(which) | |
115 | { } | |
116 | void operator()() const { t_.close(which_); } | |
117 | private: | |
92f5a8d4 | 118 | BOOST_DELETED_FUNCTION(member_close_operation& operator=(const member_close_operation&)); |
7c673cae FG |
119 | T& t_; |
120 | BOOST_IOS::openmode which_; | |
121 | }; | |
122 | ||
123 | template<typename T> | |
124 | member_close_operation<T> call_member_close(T& t, BOOST_IOS::openmode which) | |
125 | { return member_close_operation<T>(t, which); } | |
126 | ||
127 | // Function object and object generator for invoking a | |
128 | // member function void reset() | |
129 | ||
130 | template<typename T> | |
131 | class reset_operation { | |
132 | public: | |
133 | reset_operation(T& t) : t_(t) { } | |
134 | void operator()() const { t_.reset(); } | |
135 | private: | |
92f5a8d4 | 136 | BOOST_DELETED_FUNCTION(reset_operation& operator=(const reset_operation&)); |
7c673cae FG |
137 | T& t_; |
138 | }; | |
139 | ||
140 | template<typename T> | |
141 | reset_operation<T> call_reset(T& t) { return reset_operation<T>(t); } | |
142 | ||
143 | // Function object and object generator for clearing a flag | |
144 | ||
145 | template<typename T> | |
146 | class clear_flags_operation { | |
147 | public: | |
148 | typedef void result_type; | |
149 | clear_flags_operation(T& t) : t_(t) { } | |
150 | void operator()() const { t_ = 0; } | |
151 | private: | |
92f5a8d4 | 152 | BOOST_DELETED_FUNCTION(clear_flags_operation& operator=(const clear_flags_operation&)); |
7c673cae FG |
153 | T& t_; |
154 | }; | |
155 | ||
156 | template<typename T> | |
157 | clear_flags_operation<T> clear_flags(T& t) | |
158 | { return clear_flags_operation<T>(t); } | |
159 | ||
160 | // Function object and generator for flushing a buffer | |
161 | ||
162 | // Function object for use with execute_all() | |
163 | template<typename Buffer, typename Device> | |
164 | class flush_buffer_operation { | |
165 | public: | |
166 | typedef void result_type; | |
167 | flush_buffer_operation(Buffer& buf, Device& dev, bool flush) | |
168 | : buf_(buf), dev_(dev), flush_(flush) | |
169 | { } | |
170 | void operator()() const | |
171 | { | |
172 | if (flush_) | |
173 | buf_.flush(dev_); | |
174 | } | |
175 | private: | |
92f5a8d4 | 176 | BOOST_DELETED_FUNCTION(flush_buffer_operation& operator=(const flush_buffer_operation&)); |
7c673cae FG |
177 | Buffer& buf_; |
178 | Device& dev_; | |
179 | bool flush_; | |
180 | }; | |
181 | ||
182 | template<typename Buffer, typename Device> | |
183 | flush_buffer_operation<Buffer, Device> | |
184 | flush_buffer(Buffer& buf, Device& dev, bool flush) | |
185 | { return flush_buffer_operation<Buffer, Device>(buf, dev, flush); } | |
186 | ||
187 | } } } // End namespaces detail, iostreams, boost. | |
188 | ||
189 | #endif // #ifndef BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED |