63e88f80
 Hu Chunming
提交三方库
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/*-----------------------------------------------------------------------------+
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_INTERVAL_BOUNDS_HPP_JOFA_100330
#define BOOST_ICL_INTERVAL_BOUNDS_HPP_JOFA_100330
#include <boost/utility/enable_if.hpp>
#include <boost/icl/detail/design_config.hpp>
namespace boost{namespace icl
{
typedef unsigned char bound_type;
class interval_bounds
{
public:
BOOST_STATIC_CONSTANT(bound_type, static_open = 0);
BOOST_STATIC_CONSTANT(bound_type, static_left_open = 1);
BOOST_STATIC_CONSTANT(bound_type, static_right_open = 2);
BOOST_STATIC_CONSTANT(bound_type, static_closed = 3);
BOOST_STATIC_CONSTANT(bound_type, dynamic = 4);
BOOST_STATIC_CONSTANT(bound_type, undefined = 5);
BOOST_STATIC_CONSTANT(bound_type, _open = 0);
BOOST_STATIC_CONSTANT(bound_type, _left_open = 1);
BOOST_STATIC_CONSTANT(bound_type, _right_open = 2);
BOOST_STATIC_CONSTANT(bound_type, _closed = 3);
BOOST_STATIC_CONSTANT(bound_type, _right = 1);
BOOST_STATIC_CONSTANT(bound_type, _left = 2);
BOOST_STATIC_CONSTANT(bound_type, _all = 3);
public:
interval_bounds():_bits(){}
explicit interval_bounds(bound_type bounds): _bits(bounds){}
interval_bounds all ()const { return interval_bounds(_bits & _all ); }
interval_bounds left ()const { return interval_bounds(_bits & _left ); }
interval_bounds right()const { return interval_bounds(_bits & _right); }
interval_bounds reverse_left ()const { return interval_bounds((bound_type(~_bits)>>1) & _right); }
interval_bounds reverse_right()const { return interval_bounds((bound_type(~_bits)<<1) & _left ); }
bound_type bits()const{ return _bits; }
static interval_bounds open() { return interval_bounds(_open); }
static interval_bounds left_open() { return interval_bounds(_left_open); }
static interval_bounds right_open(){ return interval_bounds(_right_open);}
static interval_bounds closed() { return interval_bounds(_closed); }
public:
bound_type _bits;
};
template<class DomainT>
class bounded_value
{
public:
typedef DomainT domain_type;
typedef bounded_value<DomainT> type;
public:
bounded_value(const domain_type& value, interval_bounds bound)
: _value(value), _bound(bound) {}
domain_type value()const { return _value; }
interval_bounds bound()const { return _bound; }
private:
domain_type _value;
interval_bounds _bound;
};
}} // namespace icl boost
#endif
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