comparison DEPENDENCIES/generic/include/boost/icl/open_interval.hpp @ 16:2665513ce2d3

Add boost headers

+/*-----------------------------------------------------------------------------+
+Copyright (c) 2010-2010: Joachim Faulhaber
++------------------------------------------------------------------------------+
+   Distributed under the Boost Software License, Version 1.0.
+      (See accompanying file LICENCE.txt or copy at
+           http://www.boost.org/LICENSE_1_0.txt)
++-----------------------------------------------------------------------------*/
+#ifndef BOOST_ICL_OPEN_INTERVAL_HPP_JOFA_100930
+#define BOOST_ICL_OPEN_INTERVAL_HPP_JOFA_100930
+
+#include <functional>
+#include <boost/concept/assert.hpp>
+#include <boost/icl/concept/interval.hpp>
+#include <boost/icl/type_traits/value_size.hpp>
+#include <boost/icl/type_traits/type_to_string.hpp>
+
+namespace boost{namespace icl
+{
+
+template <class DomainT, 
+          ICL_COMPARE Compare = ICL_COMPARE_INSTANCE(ICL_COMPARE_DEFAULT, DomainT)>
+class open_interval
+{
+public:
+    typedef open_interval<DomainT,Compare> type;
+    typedef DomainT domain_type;
+    typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
+
+public:
+    //==========================================================================
+    //= Construct, copy, destruct
+    //==========================================================================
+    /** Default constructor; yields an empty interval <tt>(0,0)</tt>. */
+    open_interval() 
+        : _lwb(identity_element<DomainT>::value()), _upb(identity_element<DomainT>::value()) 
+    {
+        BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
+        BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
+    }
+
+    //NOTE: Compiler generated copy constructor is used
+
+    /** Constructor for an open singleton interval <tt>(val-1,val+1)</tt> */
+    explicit open_interval(const DomainT& val)
+        : _lwb(pred(val)), _upb(succ(val))
+    {
+        BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
+        BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
+        // Only for discrete types this ctor creates an interval containing 
+        // a single element only.
+        BOOST_STATIC_ASSERT((icl::is_discrete<DomainT>::value));
+        BOOST_ASSERT((numeric_minimum<DomainT, domain_compare, is_numeric<DomainT>::value >
+                                     ::is_less_than(val) )); 
+    }
+
+    /** Interval from <tt>low</tt> to <tt>up</tt> with bounds <tt>bounds</tt> */
+    open_interval(const DomainT& low, const DomainT& up) :
+        _lwb(low), _upb(up)
+    {
+        BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
+        BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
+    }
+
+    DomainT lower()const{ return _lwb; }
+    DomainT upper()const{ return _upb; }
+
+private:
+    DomainT _lwb;
+    DomainT _upb;
+};
+
+//==============================================================================
+//=T open_interval -> concept intervals
+//==============================================================================
+template<class DomainT, ICL_COMPARE Compare>
+struct interval_traits< icl::open_interval<DomainT, Compare> >
+{
+    typedef DomainT domain_type;
+    typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
+    typedef icl::open_interval<DomainT, Compare> interval_type;
+
+    static interval_type construct(const domain_type& lo, const domain_type& up)
+    {
+        return interval_type(lo, up);
+    }
+
+    static domain_type lower(const interval_type& inter_val){ return inter_val.lower(); };
+    static domain_type upper(const interval_type& inter_val){ return inter_val.upper(); };
+};
+
+
+//==============================================================================
+//= Type traits
+//==============================================================================
+template <class DomainT, ICL_COMPARE Compare> 
+struct interval_bound_type< open_interval<DomainT,Compare> >
+{
+    typedef interval_bound_type type;
+    BOOST_STATIC_CONSTANT(bound_type, value = interval_bounds::static_open);
+};
+
+template <class DomainT, ICL_COMPARE Compare>
+struct type_to_string<icl::open_interval<DomainT,Compare> >
+{
+    static std::string apply()
+    { return "(I)<"+ type_to_string<DomainT>::apply() +">"; }
+};
+
+template<class DomainT, ICL_COMPARE Compare> 
+struct value_size<icl::open_interval<DomainT,Compare> >
+{
+    static std::size_t apply(const icl::open_interval<DomainT>&) 
+    { return 2; }
+};
+
+}} // namespace icl boost
+
+#endif
+