Added boost header

test/external/boost/date_time/dst_transition_generators.hpp

@@ -0,0 +1,75 @@
+/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
+ * Use, modification and distribution is subject to the 
+ * Boost Software License, Version 1.0. (See accompanying
+ * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ * Author: Jeff Garland, Bart Garst
+ */
+#ifndef DATE_TIME_DATE_DST_TRANSITION_DAY_GEN_HPP__
+#define DATE_TIME_DATE_DST_TRANSITION_DAY_GEN_HPP__
+
+
+
+namespace boost {
+namespace date_time {
+
+    //! Defines base interface for calculating start and end date of daylight savings 
+    template<class date_type>
+    class dst_day_calc_rule 
+    {
+    public:
+      typedef typename date_type::year_type year_type;
+      virtual ~dst_day_calc_rule() {};
+      virtual date_type start_day(year_type y) const=0;
+      virtual std::string start_rule_as_string() const=0;
+      virtual date_type end_day(year_type y) const=0;
+      virtual std::string end_rule_as_string() const=0;
+
+    };
+
+    //! Canonical form for a class that provides day rule calculation
+    /*! This class is used to generate specific sets of dst rules
+     *  
+     *@param spec Provides a specifiction of the function object types used
+     *            to generate start and end days of daylight savings as well
+     *            as the date type.
+     */
+    template<class spec>
+    class day_calc_dst_rule : public dst_day_calc_rule<typename spec::date_type>
+    {
+    public:
+      typedef typename spec::date_type date_type;
+      typedef typename date_type::year_type year_type;
+      typedef typename spec::start_rule start_rule;
+      typedef typename spec::end_rule  end_rule;
+      day_calc_dst_rule(start_rule dst_start,
+                        end_rule dst_end) :
+        dst_start_(dst_start),
+        dst_end_(dst_end)
+      {}
+      virtual date_type start_day(year_type y) const
+      {
+        return dst_start_.get_date(y);
+      }
+      virtual std::string start_rule_as_string() const
+      {
+        return dst_start_.to_string();
+      }
+      virtual date_type end_day(year_type y) const
+      {
+        return dst_end_.get_date(y);
+      }
+      virtual std::string end_rule_as_string() const
+      {
+        return dst_end_.to_string();
+      }
+    private:
+      start_rule dst_start_;
+      end_rule dst_end_;
+    };
+
+
+} }//namespace
+
+
+
+#endif