113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
#ifndef OSMIUM_OBJECT_POINTER_COLLECTION_HPP
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#define OSMIUM_OBJECT_POINTER_COLLECTION_HPP
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/*
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This file is part of Osmium (http://osmcode.org/libosmium).
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Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <algorithm>
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#include <utility>
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#include <vector>
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#include <boost/iterator/indirect_iterator.hpp>
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#include <osmium/handler.hpp>
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#include <osmium/memory/item.hpp>
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#include <osmium/osm/object.hpp>
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// IWYU pragma: no_forward_declare osmium::OSMObject
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// IWYU pragma: no_forward_declare osmium::memory::Item
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namespace osmium {
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/**
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* A collection of pointers to OSM objects. The pointers can be easily
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* and quickly sorted or otherwise manipulated, while the objects
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* themselves or the buffers they are in, do not have to be changed.
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*
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* An iterator is provided that can iterate over the pointers but looks
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* like it is iterating over the underlying OSM objects.
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*
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* This class implements the visitor pattern which makes it easy to
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* populate the collection from a buffer of OSM objects:
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*
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* osmium::ObjectPointerCollection objects;
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* osmium::memory::Buffer buffer = reader.read();
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* osmium::apply(buffer, objects);
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*
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*/
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class ObjectPointerCollection : public osmium::handler::Handler {
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std::vector<osmium::OSMObject*> m_objects;
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public:
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typedef boost::indirect_iterator<std::vector<osmium::OSMObject*>::iterator, osmium::OSMObject> iterator;
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typedef boost::indirect_iterator<std::vector<osmium::OSMObject*>::const_iterator, const osmium::OSMObject> const_iterator;
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ObjectPointerCollection() noexcept :
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m_objects() {
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}
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void osm_object(osmium::OSMObject& object) {
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m_objects.push_back(&object);
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}
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/**
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* Sort objects according to the given order functor.
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*/
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template <class TCompare>
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void sort(TCompare&& compare) {
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std::sort(m_objects.begin(), m_objects.end(), std::forward<TCompare>(compare));
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}
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iterator begin() {
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return iterator { m_objects.begin() };
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}
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iterator end() {
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return iterator { m_objects.end() };
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}
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const_iterator cbegin() const {
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return const_iterator { m_objects.cbegin() };
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}
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const_iterator cend() const {
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return const_iterator { m_objects.cend() };
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}
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}; // class ObjectPointerCollection
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} // namespace osmium
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#endif // OSMIUM_OBJECT_POINTER_COLLECTION_HPP
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