Libosmium  2.17.3
Fast and flexible C++ library for working with OpenStreetMap data
diff_object.hpp
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1 #ifndef OSMIUM_OSM_DIFF_OBJECT_HPP
2 #define OSMIUM_OSM_DIFF_OBJECT_HPP
3 
4 /*
5 
6 This file is part of Osmium (https://osmcode.org/libosmium).
7 
8 Copyright 2013-2022 Jochen Topf <jochen@topf.org> and others (see README).
9 
10 Boost Software License - Version 1.0 - August 17th, 2003
11 
12 Permission is hereby granted, free of charge, to any person or organization
13 obtaining a copy of the software and accompanying documentation covered by
14 this license (the "Software") to use, reproduce, display, distribute,
15 execute, and transmit the Software, and to prepare derivative works of the
16 Software, and to permit third-parties to whom the Software is furnished to
17 do so, all subject to the following:
18 
19 The copyright notices in the Software and this entire statement, including
20 the above license grant, this restriction and the following disclaimer,
21 must be included in all copies of the Software, in whole or in part, and
22 all derivative works of the Software, unless such copies or derivative
23 works are solely in the form of machine-executable object code generated by
24 a source language processor.
25 
26 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
29 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
30 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
31 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
32 DEALINGS IN THE SOFTWARE.
33 
34 */
35 
36 #include <osmium/osm/item_type.hpp>
37 #include <osmium/osm/object.hpp>
38 #include <osmium/osm/timestamp.hpp>
39 #include <osmium/osm/types.hpp>
40 
41 #include <cassert>
42 
43 namespace osmium {
44 
45  class Node;
46  class Way;
47  class Relation;
48 
66  class DiffObject {
67 
68  const osmium::OSMObject* m_prev = nullptr;
69  const osmium::OSMObject* m_curr = nullptr;
70  const osmium::OSMObject* m_next = nullptr;
71 
72  public:
73 
78  DiffObject() noexcept = default;
79 
85  DiffObject(const osmium::OSMObject& prev, const osmium::OSMObject& curr, const osmium::OSMObject& next) noexcept :
86  m_prev(&prev),
87  m_curr(&curr),
88  m_next(&next) {
89  assert(prev.type() == curr.type() && curr.type() == next.type());
90  assert(prev.id() == curr.id() && curr.id() == next.id());
91  }
92 
96  bool empty() const noexcept {
97  return m_prev == nullptr;
98  }
99 
105  const osmium::OSMObject& prev() const noexcept {
106  assert(m_prev && m_curr && m_next);
107  return *m_prev;
108  }
109 
115  const osmium::OSMObject& curr() const noexcept {
116  assert(m_prev && m_curr && m_next);
117  return *m_curr;
118  }
119 
125  const osmium::OSMObject& next() const noexcept {
126  assert(m_prev && m_curr && m_next);
127  return *m_next;
128  }
129 
135  bool first() const noexcept {
136  assert(m_prev && m_curr && m_next);
137  return m_prev == m_curr;
138  }
139 
145  bool last() const noexcept {
146  assert(m_prev && m_curr && m_next);
147  return m_curr == m_next;
148  }
149 
155  osmium::item_type type() const noexcept {
156  assert(m_prev && m_curr && m_next);
157  return m_curr->type();
158  }
159 
165  osmium::object_id_type id() const noexcept {
166  assert(m_prev && m_curr && m_next);
167  return m_curr->id();
168  }
169 
176  assert(m_prev && m_curr && m_next);
177  return m_curr->version();
178  }
179 
186  assert(m_prev && m_curr && m_next);
187  return m_curr->changeset();
188  }
189 
195  osmium::Timestamp start_time() const noexcept {
196  assert(m_prev && m_curr && m_next);
197  return m_curr->timestamp();
198  }
199 
209  osmium::Timestamp end_time() const noexcept {
210  assert(m_prev && m_curr && m_next);
211  return last() ? osmium::end_of_time() : m_next->timestamp();
212  }
213 
223  bool is_between(const osmium::Timestamp& from, const osmium::Timestamp& to) const noexcept {
224  assert(m_prev && m_curr && m_next);
225  return start_time() < to &&
226  ((start_time() != end_time() && end_time() > from) ||
227  (start_time() == end_time() && end_time() >= from));
228  }
229 
235  bool is_visible_at(const osmium::Timestamp& timestamp) const noexcept {
236  assert(m_prev && m_curr && m_next);
237  return start_time() <= timestamp && end_time() > timestamp && m_curr->visible();
238  }
239 
240  }; // class DiffObject
241 
242  template <typename T>
243  class DiffObjectDerived : public DiffObject {
244 
245  public:
246 
247  DiffObjectDerived(const T& prev, const T& curr, const T& next) noexcept :
248  DiffObject(prev, curr, next) {
249  }
250 
251  const T& prev() const noexcept {
252  return static_cast<const T&>(DiffObject::prev());
253  }
254 
255  const T& curr() const noexcept {
256  return static_cast<const T&>(DiffObject::curr());
257  }
258 
259  const T& next() const noexcept {
260  return static_cast<const T&>(DiffObject::next());
261  }
262 
263  }; // class DiffObjectDerived
264 
268 
269 } // namespace osmium
270 
271 #endif // OSMIUM_OSM_DIFF_OBJECT_HPP
Definition: diff_object.hpp:243
const T & curr() const noexcept
Definition: diff_object.hpp:255
DiffObjectDerived(const T &prev, const T &curr, const T &next) noexcept
Definition: diff_object.hpp:247
const T & prev() const noexcept
Definition: diff_object.hpp:251
const T & next() const noexcept
Definition: diff_object.hpp:259
Definition: diff_object.hpp:66
osmium::Timestamp end_time() const noexcept
Definition: diff_object.hpp:209
bool is_visible_at(const osmium::Timestamp &timestamp) const noexcept
Definition: diff_object.hpp:235
osmium::item_type type() const noexcept
Definition: diff_object.hpp:155
bool empty() const noexcept
Definition: diff_object.hpp:96
const osmium::OSMObject & next() const noexcept
Definition: diff_object.hpp:125
DiffObject() noexcept=default
osmium::Timestamp start_time() const noexcept
Definition: diff_object.hpp:195
const osmium::OSMObject & curr() const noexcept
Definition: diff_object.hpp:115
osmium::changeset_id_type changeset() const noexcept
Definition: diff_object.hpp:185
const osmium::OSMObject * m_curr
Definition: diff_object.hpp:69
const osmium::OSMObject * m_prev
Definition: diff_object.hpp:68
osmium::object_id_type id() const noexcept
Definition: diff_object.hpp:165
const osmium::OSMObject & prev() const noexcept
Definition: diff_object.hpp:105
const osmium::OSMObject * m_next
Definition: diff_object.hpp:70
bool first() const noexcept
Definition: diff_object.hpp:135
bool is_between(const osmium::Timestamp &from, const osmium::Timestamp &to) const noexcept
Definition: diff_object.hpp:223
bool last() const noexcept
Definition: diff_object.hpp:145
osmium::object_version_type version() const noexcept
Definition: diff_object.hpp:175
Definition: object.hpp:64
bool visible() const noexcept
Is this object marked visible (ie not deleted)?
Definition: object.hpp:152
object_version_type version() const noexcept
Get version of this object.
Definition: object.hpp:194
osmium::Timestamp timestamp() const noexcept
Get timestamp when this object last changed.
Definition: object.hpp:283
changeset_id_type changeset() const noexcept
Get changeset id of this object.
Definition: object.hpp:218
object_id_type id() const noexcept
Get ID of this object.
Definition: object.hpp:118
Definition: timestamp.hpp:147
item_type type() const noexcept
Definition: item.hpp:171
Namespace for everything in the Osmium library.
Definition: assembler.hpp:53
constexpr Timestamp end_of_time() noexcept
Definition: timestamp.hpp:309
uint32_t object_version_type
Type for OSM object version number.
Definition: types.hpp:47
uint32_t changeset_id_type
Type for OSM changeset IDs.
Definition: types.hpp:48
int64_t object_id_type
Type for OSM object (node, way, or relation) IDs.
Definition: types.hpp:45
item_type
Definition: item_type.hpp:45