boost/icl/gregorian.hpp

0001 /*-----------------------------------------------------------------------------+
0002 Copyright (c) 2008-2009: Joachim Faulhaber
0003 +------------------------------------------------------------------------------+
0004    Distributed under the Boost Software License, Version 1.0.
0005       (See accompanying file LICENCE.txt or copy at
0006            http://www.boost.org/LICENSE_1_0.txt)
0007 +-----------------------------------------------------------------------------*/
0008 #ifndef BOOST_ICL_GREGORIAN_DATE_HPP_JOFA_080416
0009 #define BOOST_ICL_GREGORIAN_DATE_HPP_JOFA_080416
0010
0011 #include <boost/icl/detail/boost_config.hpp>
0012 #include <boost/detail/workaround.hpp>
0013
0014 #ifdef BOOST_MSVC
0015 #pragma warning(push)
0016 #pragma warning(disable:4100) // unreferenced formal parameter
0017 #pragma warning(disable:4127) // conditional expression is constant
0018 #pragma warning(disable:4244) // 'argument' : conversion from 'int' to 'unsigned short', possible loss of data
0019 #pragma warning(disable:4702) // boost\lexical_cast.hpp(1159) : warning C4702: unreachable code
0020 #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'
0021 #endif
0022
0023 #include <stdio.h>
0024 #include <string>
0025 #include <sstream>
0026 #include <iostream>
0027 #include <boost/date_time/gregorian/gregorian.hpp>
0028
0029 #ifdef BOOST_MSVC
0030 #pragma warning(pop)
0031 #endif
0032
0033 #include <boost/icl/type_traits/identity_element.hpp>
0034 #include <boost/icl/type_traits/is_discrete.hpp>
0035 #include <boost/icl/type_traits/difference_type_of.hpp>
0036 #include <boost/icl/type_traits/size_type_of.hpp>
0037
0038 namespace boost{namespace icl
0039 {
0040     template<> struct is_discrete<boost::gregorian::date>
0041     {
0042         typedef is_discrete type;
0043         BOOST_STATIC_CONSTANT(bool, value = true);
0044     };
0045
0046     template<>
0047     inline boost::gregorian::date identity_element<boost::gregorian::date>::value()
0048     {
0049         return boost::gregorian::date(boost::gregorian::min_date_time);
0050     }
0051
0052     template<>
0053     struct identity_element<boost::gregorian::date_duration>
0054     {
0055         static boost::gregorian::date_duration value()
0056         {
0057             return boost::gregorian::date(boost::gregorian::min_date_time)
0058                  - boost::gregorian::date(boost::gregorian::min_date_time);
0059         }
0060     };
0061
0062     template<>
0063     struct has_difference<boost::gregorian::date>
0064     {
0065         typedef has_difference type;
0066         BOOST_STATIC_CONSTANT(bool, value = true);
0067     };
0068
0069     template<>
0070     struct difference_type_of<boost::gregorian::date>
0071     { typedef boost::gregorian::date_duration type; };
0072
0073     template<>
0074     struct size_type_of<boost::gregorian::date>
0075     { typedef boost::gregorian::date_duration type; };
0076
0077
0078
0079     // ------------------------------------------------------------------------
0080     inline boost::gregorian::date operator ++(boost::gregorian::date& x)
0081     {
0082         return x += boost::gregorian::date::duration_type::unit();
0083     }
0084
0085     inline boost::gregorian::date operator --(boost::gregorian::date& x)
0086     {
0087         return x -= boost::gregorian::date::duration_type::unit();
0088     }
0089
0090     // ------------------------------------------------------------------------
0091     template<> struct is_discrete<boost::gregorian::date_duration>
0092     {
0093         typedef is_discrete type;
0094         BOOST_STATIC_CONSTANT(bool, value = true);
0095     };
0096
0097     template<>
0098     struct has_difference<boost::gregorian::date_duration>
0099     {
0100         typedef has_difference type;
0101         BOOST_STATIC_CONSTANT(bool, value = true);
0102     };
0103
0104     template<>
0105     struct size_type_of<boost::gregorian::date_duration>
0106     {
0107         typedef boost::gregorian::date_duration type;
0108     };
0109
0110     inline boost::gregorian::date_duration operator ++(boost::gregorian::date_duration& x)
0111     {
0112         return x += boost::gregorian::date::duration_type::unit();
0113     }
0114
0115     inline boost::gregorian::date_duration operator --(boost::gregorian::date_duration& x)
0116     {
0117         return x -= boost::gregorian::date::duration_type::unit();
0118     }
0119
0120     // ------------------------------------------------------------------------
0121
0122
0123 }} // namespace icl boost
0124
0125 #endif
0126
0127