238 lines
12 KiB
C++
238 lines
12 KiB
C++
#ifndef OSMIUM_VISITOR_HPP
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#define OSMIUM_VISITOR_HPP
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/*
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This file is part of Osmium (http://osmcode.org/libosmium).
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Copyright 2013-2017 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 <type_traits>
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#include <utility>
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#include <osmium/fwd.hpp>
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#include <osmium/io/reader_iterator.hpp> // IWYU pragma: keep
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#include <osmium/memory/buffer.hpp>
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#include <osmium/osm.hpp>
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#include <osmium/osm/entity.hpp>
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#include <osmium/osm/item_type.hpp>
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namespace osmium {
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namespace detail {
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template <typename T, typename U>
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using ConstIfConst = typename std::conditional<std::is_const<T>::value, typename std::add_const<U>::type, U>::type;
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template <typename THandler, typename TItem>
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inline void apply_item_impl(TItem& item, THandler&& handler) {
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switch (item.type()) {
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case osmium::item_type::undefined:
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break;
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case osmium::item_type::node:
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std::forward<THandler>(handler).osm_object(static_cast<ConstIfConst<TItem, osmium::OSMObject>&>(item));
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std::forward<THandler>(handler).node(static_cast<ConstIfConst<TItem, osmium::Node>&>(item));
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break;
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case osmium::item_type::way:
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std::forward<THandler>(handler).osm_object(static_cast<ConstIfConst<TItem, osmium::OSMObject>&>(item));
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std::forward<THandler>(handler).way(static_cast<ConstIfConst<TItem, osmium::Way>&>(item));
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break;
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case osmium::item_type::relation:
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std::forward<THandler>(handler).osm_object(static_cast<ConstIfConst<TItem, osmium::OSMObject>&>(item));
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std::forward<THandler>(handler).relation(static_cast<ConstIfConst<TItem, osmium::Relation>&>(item));
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break;
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case osmium::item_type::area:
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std::forward<THandler>(handler).osm_object(static_cast<ConstIfConst<TItem, osmium::OSMObject>&>(item));
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std::forward<THandler>(handler).area(static_cast<ConstIfConst<TItem, osmium::Area>&>(item));
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break;
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case osmium::item_type::changeset:
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std::forward<THandler>(handler).changeset(static_cast<ConstIfConst<TItem, osmium::Changeset>&>(item));
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break;
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case osmium::item_type::tag_list:
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std::forward<THandler>(handler).tag_list(static_cast<ConstIfConst<TItem, osmium::TagList>&>(item));
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break;
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case osmium::item_type::way_node_list:
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std::forward<THandler>(handler).way_node_list(static_cast<ConstIfConst<TItem, osmium::WayNodeList>&>(item));
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break;
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case osmium::item_type::relation_member_list:
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case osmium::item_type::relation_member_list_with_full_members:
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std::forward<THandler>(handler).relation_member_list(static_cast<ConstIfConst<TItem, osmium::RelationMemberList>&>(item));
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break;
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case osmium::item_type::outer_ring:
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std::forward<THandler>(handler).outer_ring(static_cast<ConstIfConst<TItem, osmium::OuterRing>&>(item));
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break;
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case osmium::item_type::inner_ring:
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std::forward<THandler>(handler).inner_ring(static_cast<ConstIfConst<TItem, osmium::InnerRing>&>(item));
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break;
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case osmium::item_type::changeset_discussion:
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std::forward<THandler>(handler).changeset_discussion(static_cast<ConstIfConst<TItem, osmium::ChangesetDiscussion>&>(item));
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break;
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}
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}
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template <typename THandler>
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inline void apply_item_impl(const osmium::OSMEntity& item, THandler&& handler) {
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switch (item.type()) {
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case osmium::item_type::node:
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std::forward<THandler>(handler).osm_object(static_cast<const osmium::OSMObject&>(item));
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std::forward<THandler>(handler).node(static_cast<const osmium::Node&>(item));
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break;
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case osmium::item_type::way:
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std::forward<THandler>(handler).osm_object(static_cast<const osmium::OSMObject&>(item));
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std::forward<THandler>(handler).way(static_cast<const osmium::Way&>(item));
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break;
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case osmium::item_type::relation:
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std::forward<THandler>(handler).osm_object(static_cast<const osmium::OSMObject&>(item));
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std::forward<THandler>(handler).relation(static_cast<const osmium::Relation&>(item));
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break;
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case osmium::item_type::area:
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std::forward<THandler>(handler).osm_object(static_cast<const osmium::OSMObject&>(item));
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std::forward<THandler>(handler).area(static_cast<const osmium::Area&>(item));
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break;
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case osmium::item_type::changeset:
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std::forward<THandler>(handler).changeset(static_cast<const osmium::Changeset&>(item));
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break;
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default:
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throw osmium::unknown_type{};
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}
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}
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template <typename THandler>
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inline void apply_item_impl(osmium::OSMEntity& item, THandler&& handler) {
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switch (item.type()) {
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case osmium::item_type::node:
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std::forward<THandler>(handler).osm_object(static_cast<osmium::OSMObject&>(item));
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std::forward<THandler>(handler).node(static_cast<osmium::Node&>(item));
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break;
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case osmium::item_type::way:
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std::forward<THandler>(handler).osm_object(static_cast<osmium::OSMObject&>(item));
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std::forward<THandler>(handler).way(static_cast<osmium::Way&>(item));
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break;
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case osmium::item_type::relation:
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std::forward<THandler>(handler).osm_object(static_cast<osmium::OSMObject&>(item));
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std::forward<THandler>(handler).relation(static_cast<osmium::Relation&>(item));
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break;
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case osmium::item_type::area:
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std::forward<THandler>(handler).osm_object(static_cast<osmium::OSMObject&>(item));
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std::forward<THandler>(handler).area(static_cast<osmium::Area&>(item));
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break;
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case osmium::item_type::changeset:
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std::forward<THandler>(handler).changeset(static_cast<osmium::Changeset&>(item));
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break;
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default:
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throw osmium::unknown_type{};
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}
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}
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template <typename THandler>
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inline void apply_item_impl(const osmium::OSMObject& item, THandler&& handler) {
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switch (item.type()) {
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case osmium::item_type::node:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).node(static_cast<const osmium::Node&>(item));
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break;
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case osmium::item_type::way:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).way(static_cast<const osmium::Way&>(item));
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break;
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case osmium::item_type::relation:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).relation(static_cast<const osmium::Relation&>(item));
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break;
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case osmium::item_type::area:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).area(static_cast<const osmium::Area&>(item));
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break;
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default:
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throw osmium::unknown_type{};
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}
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}
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template <typename THandler>
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inline void apply_item_impl(osmium::OSMObject& item, THandler&& handler) {
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switch (item.type()) {
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case osmium::item_type::node:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).node(static_cast<osmium::Node&>(item));
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break;
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case osmium::item_type::way:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).way(static_cast<osmium::Way&>(item));
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break;
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case osmium::item_type::relation:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).relation(static_cast<osmium::Relation&>(item));
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break;
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case osmium::item_type::area:
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std::forward<THandler>(handler).osm_object(item);
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std::forward<THandler>(handler).area(static_cast<osmium::Area&>(item));
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break;
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default:
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throw osmium::unknown_type{};
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}
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}
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} // namespace detail
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template <typename TItem, typename... THandlers>
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inline void apply_item(TItem& item, THandlers&&... handlers) {
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(void)std::initializer_list<int>{
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(detail::apply_item_impl(item, std::forward<THandlers>(handlers)), 0)...
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};
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}
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template <typename... THandlers>
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inline void apply_flush(THandlers&&... handlers) {
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(void)std::initializer_list<int>{
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(std::forward<THandlers>(handlers).flush(), 0)...
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};
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}
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template <typename TIterator, typename... THandlers>
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inline void apply(TIterator it, TIterator end, THandlers&&... handlers) {
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for (; it != end; ++it) {
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apply_item(*it, std::forward<THandlers>(handlers)...);
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}
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apply_flush(std::forward<THandlers>(handlers)...);
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}
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template <typename TContainer, typename... THandlers>
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inline void apply(TContainer& c, THandlers&&... handlers) {
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apply(std::begin(c), std::end(c), std::forward<THandlers>(handlers)...);
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}
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template <typename... THandlers>
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inline void apply(const osmium::memory::Buffer& buffer, THandlers&&... handlers) {
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apply(buffer.cbegin(), buffer.cend(), std::forward<THandlers>(handlers)...);
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}
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} // namespace osmium
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#endif // OSMIUM_VISITOR_HPP
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