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1 | |
2 | /* | |
3 | [auto_generated] | |
4 | boost/numeric/odeint/iterator/detail/ode_iterator_base.hpp | |
5 | ||
6 | [begin_description] | |
7 | Base class for const_step_iterator and adaptive_iterator. | |
8 | [end_description] | |
9 | ||
10 | Copyright 2012-2013 Karsten Ahnert | |
11 | Copyright 2012-2013 Mario Mulansky | |
12 | ||
13 | Distributed under the Boost Software License, Version 1.0. | |
14 | (See accompanying file LICENSE_1_0.txt or | |
15 | copy at http://www.boost.org/LICENSE_1_0.txt) | |
16 | */ | |
17 | ||
18 | ||
19 | #ifndef BOOST_NUMERIC_ODEINT_ITERATOR_DETAIL_ODE_ITERATOR_BASE_HPP_INCLUDED | |
20 | #define BOOST_NUMERIC_ODEINT_ITERATOR_DETAIL_ODE_ITERATOR_BASE_HPP_INCLUDED | |
21 | ||
22 | #include <boost/iterator/iterator_facade.hpp> | |
23 | ||
24 | #include <boost/numeric/odeint/util/unwrap_reference.hpp> | |
25 | #include <boost/numeric/odeint/util/detail/less_with_sign.hpp> | |
26 | ||
27 | namespace boost { | |
28 | namespace numeric { | |
29 | namespace odeint { | |
30 | namespace detail { | |
31 | ||
32 | struct ode_state_iterator_tag {}; | |
33 | struct ode_state_time_iterator_tag {}; | |
34 | ||
35 | template< class Iterator , class Stepper , class System , class State , typename Tag > | |
36 | class ode_iterator_base; | |
37 | ||
38 | ||
39 | /* Specialization for the state iterator that has only state_type as its value_type */ | |
40 | template< class Iterator , class Stepper , class System , class State > | |
41 | class ode_iterator_base< Iterator , Stepper , System , State , ode_state_iterator_tag > | |
42 | : public boost::iterator_facade | |
43 | < | |
44 | Iterator , | |
45 | typename traits::state_type< Stepper >::type const , | |
46 | boost::single_pass_traversal_tag | |
47 | > | |
48 | { | |
49 | private: | |
50 | ||
51 | typedef Stepper stepper_type; | |
52 | typedef System system_type; | |
53 | typedef typename boost::numeric::odeint::unwrap_reference< stepper_type >::type unwrapped_stepper_type; | |
54 | typedef State state_type; | |
55 | typedef typename unwrapped_stepper_type::time_type time_type; | |
56 | typedef typename unwrapped_stepper_type::value_type ode_value_type; | |
57 | ||
58 | public: | |
59 | ||
60 | ode_iterator_base( stepper_type stepper , system_type sys , time_type t , time_type dt ) | |
61 | : m_stepper( stepper ) , m_system( sys ) , | |
62 | m_t( t ) , m_dt( dt ) , m_at_end( false ) | |
63 | { } | |
64 | ||
65 | ode_iterator_base( stepper_type stepper , system_type sys ) | |
66 | : m_stepper( stepper ) , m_system( sys ) , | |
67 | m_t() , m_dt() , m_at_end( true ) | |
68 | { } | |
69 | ||
70 | // this function is only for testing | |
71 | bool same( const ode_iterator_base &iter ) const | |
72 | { | |
73 | return ( | |
74 | //( static_cast<Iterator>(*this).get_state() == | |
75 | // static_cast<Iterator>(iter).get_state ) && | |
76 | ( m_t == iter.m_t ) && | |
77 | ( m_dt == iter.m_dt ) && | |
78 | ( m_at_end == iter.m_at_end ) | |
79 | ); | |
80 | } | |
81 | ||
82 | ||
83 | protected: | |
84 | ||
85 | friend class boost::iterator_core_access; | |
86 | ||
87 | bool equal( ode_iterator_base const& other ) const | |
88 | { | |
89 | if( m_at_end == other.m_at_end ) | |
90 | { | |
91 | return true; | |
92 | } | |
93 | else | |
94 | { | |
95 | return false; | |
96 | } | |
97 | } | |
98 | ||
99 | const state_type& dereference() const | |
100 | { | |
101 | return static_cast<const Iterator*>(this)->get_state(); | |
102 | } | |
103 | ||
104 | protected: | |
105 | ||
106 | stepper_type m_stepper; | |
107 | system_type m_system; | |
108 | time_type m_t; | |
109 | time_type m_dt; | |
110 | bool m_at_end; | |
111 | }; | |
112 | ||
113 | ||
114 | ||
115 | /* Specialization for the state-time iterator that has pair<state_type,time_type> as its value_type */ | |
116 | ||
117 | template< class Iterator , class Stepper , class System , class State > | |
118 | class ode_iterator_base< Iterator , Stepper , System , State , ode_state_time_iterator_tag > | |
119 | : public boost::iterator_facade | |
120 | < | |
121 | Iterator , | |
122 | std::pair< const State , const typename traits::time_type< Stepper >::type > , | |
123 | boost::single_pass_traversal_tag , | |
124 | std::pair< const State& , const typename traits::time_type< Stepper >::type& > | |
125 | > | |
126 | { | |
127 | private: | |
128 | ||
129 | typedef Stepper stepper_type; | |
130 | typedef System system_type; | |
131 | typedef typename boost::numeric::odeint::unwrap_reference< stepper_type >::type unwrapped_stepper_type; | |
132 | typedef State state_type; | |
133 | typedef typename unwrapped_stepper_type::time_type time_type; | |
134 | typedef typename unwrapped_stepper_type::value_type ode_value_type; | |
135 | ||
136 | public: | |
137 | ||
138 | ode_iterator_base( stepper_type stepper , system_type sys , | |
139 | time_type t , time_type dt ) | |
140 | : m_stepper( stepper ) , m_system( sys ) , | |
141 | m_t( t ) , m_dt( dt ) , m_at_end( false ) | |
142 | { } | |
143 | ||
144 | ode_iterator_base( stepper_type stepper , system_type sys ) | |
145 | : m_stepper( stepper ) , m_system( sys ) , m_at_end( true ) | |
146 | { } | |
147 | ||
148 | bool same( ode_iterator_base const& iter ) | |
149 | { | |
150 | return ( | |
151 | //( static_cast<Iterator>(*this).get_state() == | |
152 | // static_cast<Iterator>(iter).get_state ) && | |
153 | ( m_t == iter.m_t ) && | |
154 | ( m_dt == iter.m_dt ) && | |
155 | ( m_at_end == iter.m_at_end ) | |
156 | ); | |
157 | } | |
158 | ||
159 | ||
160 | protected: | |
161 | ||
162 | friend class boost::iterator_core_access; | |
163 | ||
164 | bool equal( ode_iterator_base const& other ) const | |
165 | { | |
166 | if( m_at_end == other.m_at_end ) | |
167 | { | |
168 | return true; | |
169 | } | |
170 | else | |
171 | { | |
172 | return false; | |
173 | } | |
174 | } | |
175 | ||
176 | std::pair< const state_type& , const time_type& > dereference() const | |
177 | { | |
178 | return std::pair< const state_type & , const time_type & >( | |
179 | static_cast<const Iterator*>(this)->get_state() , m_t ); | |
180 | } | |
181 | ||
182 | stepper_type m_stepper; | |
183 | system_type m_system; | |
184 | time_type m_t; | |
185 | time_type m_dt; | |
186 | bool m_at_end; | |
187 | ||
188 | }; | |
189 | ||
190 | ||
191 | ||
192 | } // namespace detail | |
193 | } // namespace odeint | |
194 | } // namespace numeric | |
195 | } // namespace boost | |
196 | ||
197 | ||
198 | ||
199 | #endif // BOOST_NUMERIC_ODEINT_ITERATOR_DETAIL_ODE_ITERATOR_BASE_HPP_INCLUDED |