1 /*-----------------------------------------------------------------------------+
2 Copyright (c) 2008-2009: Joachim Faulhaber
3 +------------------------------------------------------------------------------+
4    Distributed under the Boost Software License, Version 1.0.
5       (See accompanying file LICENCE.txt or copy at
6            http://www.boost.org/LICENSE_1_0.txt)
7 +-----------------------------------------------------------------------------*/
8 
9 /*------------------------------------------------------------------------------
10 itl_ptime provides adapter code for boost::posix_time::ptime.
11 It implements incrementation (++) decrementation (--) and a neutral element
12 w.r.t. addition (identity_element()).
13 ------------------------------------------------------------------------------*/
14 
15 #ifndef BOOST_ICL_PTIME_HPP_JOFA_080416
16 #define BOOST_ICL_PTIME_HPP_JOFA_080416
17 
18 #include <boost/icl/detail/boost_config.hpp>
19 #include <boost/detail/workaround.hpp>
20 
21 #ifdef BOOST_MSVC
22 #pragma warning(push)
23 #pragma warning(disable:4100) // boost/date_time/time.hpp(80) : warning C4100: 'as_offset' : unreferenced formal parameter
24 #pragma warning(disable:4127) // conditional expression is constant
25 #pragma warning(disable:4244) // 'argument' : conversion from 'int' to 'unsigned short', possible loss of data
26 #pragma warning(disable:4702) // boost\lexical_cast.hpp(1159) : warning C4702: unreachable code
27 #pragma warning(disable:4996) // Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'
28 #endif
29 
30 #include <stdio.h>
31 #include <string>
32 #include <sstream>
33 #include <iostream>
34 #include <boost/date_time/posix_time/posix_time.hpp>
35 
36 #ifdef BOOST_MSVC
37 #pragma warning(pop)
38 #endif
39 
40 #include <boost/icl/type_traits/identity_element.hpp>
41 #include <boost/icl/type_traits/difference_type_of.hpp>
42 #include <boost/icl/type_traits/size_type_of.hpp>
43 #include <boost/icl/type_traits/is_discrete.hpp>
44 
45 namespace boost{namespace icl
46 {
47     template<> struct is_discrete<boost::posix_time::ptime>
48     {
49         typedef is_discrete type;
50         BOOST_STATIC_CONSTANT(bool, value = true);
51     };
52 
53     template<>
value()54     inline boost::posix_time::ptime identity_element<boost::posix_time::ptime>::value()
55     {
56         return boost::posix_time::ptime(boost::posix_time::min_date_time);
57     }
58 
59     template<>
60     struct has_difference<boost::posix_time::ptime>
61     {
62         typedef has_difference type;
63         BOOST_STATIC_CONSTANT(bool, value = true);
64     };
65 
66     template<>
67     struct difference_type_of<boost::posix_time::ptime>
68     {
69         typedef boost::posix_time::time_duration type;
70     };
71 
72     template<>
73     struct size_type_of<boost::posix_time::ptime>
74     {
75         typedef boost::posix_time::time_duration type;
76     };
77 
78     // ------------------------------------------------------------------------
operator ++(boost::posix_time::ptime & x)79     inline boost::posix_time::ptime operator ++(boost::posix_time::ptime& x)
80     {
81         return x += boost::posix_time::ptime::time_duration_type::unit();
82     }
83 
operator --(boost::posix_time::ptime & x)84     inline boost::posix_time::ptime operator --(boost::posix_time::ptime& x)
85     {
86         return x -= boost::posix_time::ptime::time_duration_type::unit();
87     }
88 
89     // ------------------------------------------------------------------------
90     template<> struct is_discrete<boost::posix_time::time_duration>
91     {
92         typedef is_discrete type;
93         BOOST_STATIC_CONSTANT(bool, value = true);
94     };
95 
96     template<>
97     struct has_difference<boost::posix_time::time_duration>
98     {
99         typedef has_difference type;
100         BOOST_STATIC_CONSTANT(bool, value = true);
101     };
102 
103     template<>
104     struct size_type_of<boost::posix_time::time_duration>
105     {
106         typedef boost::posix_time::time_duration type;
107     };
108 
operator ++(boost::posix_time::time_duration & x)109     inline boost::posix_time::time_duration operator ++(boost::posix_time::time_duration& x)
110     {
111         return x += boost::posix_time::ptime::time_duration_type::unit();
112     }
113 
operator --(boost::posix_time::time_duration & x)114     inline boost::posix_time::time_duration operator --(boost::posix_time::time_duration& x)
115     {
116         return x -= boost::posix_time::ptime::time_duration_type::unit();
117     }
118 }} // namespace icl boost
119 
120 #endif
121 
122 
123