Libosmium: include/osmium/osm/diff_object.hpp Source File

Libosmium Fast and flexible C++ library for working with OpenStreetMap data

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diff_object.hpp
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1#ifndef OSMIUM_OSM_DIFF_OBJECT_HPP
2#define OSMIUM_OSM_DIFF_OBJECT_HPP
3
4/*
5
6This file is part of Osmium (https://osmcode.org/libosmium).
7
8Copyright 2013-2026 Jochen Topf <jochen@topf.org> and others (see README).
9
10Boost Software License - Version 1.0 - August 17th, 2003
11
12Permission is hereby granted, free of charge, to any person or organization
13obtaining a copy of the software and accompanying documentation covered by
14this license (the "Software") to use, reproduce, display, distribute,
15execute, and transmit the Software, and to prepare derivative works of the
16Software, and to permit third-parties to whom the Software is furnished to
17do so, all subject to the following:
18
19The copyright notices in the Software and this entire statement, including
20the above license grant, this restriction and the following disclaimer,
21must be included in all copies of the Software, in whole or in part, and
22all derivative works of the Software, unless such copies or derivative
23works are solely in the form of machine-executable object code generated by
24a source language processor.
25
26THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
29SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
30FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
31ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
32DEALINGS 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
43namespace 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
175 osmium::object_version_type version() const noexcept {
176 assert(m_prev && m_curr && m_next);
177 return m_curr->version();
178 }
179
185 osmium::changeset_id_type changeset() const noexcept {
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
265 using DiffNode = DiffObjectDerived<osmium::Node>;
266 using DiffWay = DiffObjectDerived<osmium::Way>;
267 using DiffRelation = DiffObjectDerived<osmium::Relation>;
268
269} // namespace osmium
270
271#endif // OSMIUM_OSM_DIFF_OBJECT_HPP
osmium::DiffObjectDerived
Definition diff_object.hpp:243
osmium::DiffObjectDerived< osmium::Node >::prev
const osmium::Node & prev() const noexcept
Definition diff_object.hpp:251
osmium::DiffObjectDerived::DiffObjectDerived
DiffObjectDerived(const T &prev, const T &curr, const T &next) noexcept
Definition diff_object.hpp:247
osmium::DiffObjectDerived< osmium::Node >::next
const osmium::Node & next() const noexcept
Definition diff_object.hpp:259
osmium::DiffObjectDerived< osmium::Node >::curr
const osmium::Node & curr() const noexcept
Definition diff_object.hpp:255
osmium::DiffObject::end_time
osmium::Timestamp end_time() const noexcept
Definition diff_object.hpp:209
osmium::DiffObject::is_visible_at
bool is_visible_at(const osmium::Timestamp &timestamp) const noexcept
Definition diff_object.hpp:235
osmium::DiffObject::type
osmium::item_type type() const noexcept
Definition diff_object.hpp:155
osmium::DiffObject::empty
bool empty() const noexcept
Definition diff_object.hpp:96
osmium::DiffObject::DiffObject
DiffObject() noexcept=default
osmium::DiffObject::start_time
osmium::Timestamp start_time() const noexcept
Definition diff_object.hpp:195
osmium::DiffObject::changeset
osmium::changeset_id_type changeset() const noexcept
Definition diff_object.hpp:185
osmium::DiffObject::next
const osmium::OSMObject & next() const noexcept
Definition diff_object.hpp:125
osmium::DiffObject::m_curr
const osmium::OSMObject * m_curr
Definition diff_object.hpp:69
osmium::DiffObject::m_prev
const osmium::OSMObject * m_prev
Definition diff_object.hpp:68
osmium::DiffObject::curr
const osmium::OSMObject & curr() const noexcept
Definition diff_object.hpp:115
osmium::DiffObject::id
osmium::object_id_type id() const noexcept
Definition diff_object.hpp:165
osmium::DiffObject::m_next
const osmium::OSMObject * m_next
Definition diff_object.hpp:70
osmium::DiffObject::first
bool first() const noexcept
Definition diff_object.hpp:135
osmium::DiffObject::prev
const osmium::OSMObject & prev() const noexcept
Definition diff_object.hpp:105
osmium::DiffObject::is_between
bool is_between(const osmium::Timestamp &from, const osmium::Timestamp &to) const noexcept
Definition diff_object.hpp:223
osmium::DiffObject::last
bool last() const noexcept
Definition diff_object.hpp:145
osmium::DiffObject::version
osmium::object_version_type version() const noexcept
Definition diff_object.hpp:175
osmium::Node
Definition node.hpp:48
osmium::OSMObject
Definition object.hpp:64
osmium::Relation
Definition relation.hpp:161
osmium::Timestamp
Definition timestamp.hpp:175
osmium::Way
Definition way.hpp:72
item_type.hpp
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::end_of_time
constexpr Timestamp end_of_time() noexcept
Definition timestamp.hpp:328
osmium::DiffNode
DiffObjectDerived< osmium::Node > DiffNode
Definition diff_object.hpp:265
osmium::changeset_id_type
uint32_t changeset_id_type
Type for OSM changeset IDs.
Definition types.hpp:48
osmium::DiffWay
DiffObjectDerived< osmium::Way > DiffWay
Definition diff_object.hpp:266
osmium::item_type
item_type
Definition item_type.hpp:45
osmium::object_id_type
int64_t object_id_type
Type for OSM object (node, way, or relation) IDs.
Definition types.hpp:45
osmium::object_version_type
uint32_t object_version_type
Type for OSM object version number.
Definition types.hpp:47
osmium::DiffRelation
DiffObjectDerived< osmium::Relation > DiffRelation
Definition diff_object.hpp:267
object.hpp
timestamp.hpp
types.hpp