2e9a7d9c1a
Makes turn restrictions into dedicated structures and diferentiates between them via a variant. Ensures that we do not accidentally mess up ID types within our application. In addition this improves the restriction performance by only parsing all edges once at the cost of (at the time of writing) 22MB in terms of main memory usage.
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
#ifndef RESTRICTION_PARSER_HPP
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#define RESTRICTION_PARSER_HPP
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#include "extractor/restriction.hpp"
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#include <boost/optional.hpp>
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#include <string>
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#include <vector>
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namespace osmium
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{
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class Relation;
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}
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namespace osrm
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{
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namespace extractor
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{
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class ScriptingEnvironment;
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/**
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* Parses the relations that represents turn restrictions.
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*
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* Currently only restrictions where the via objects is a node are supported.
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* from via to
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* ------->(x)-------->
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*
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* While this class does not directly invoke any lua code _per relation_ it does
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* load configuration values from the profile, that are saved in variables.
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* Namely ```use_turn_restrictions``` and ```get_restrictions```.
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*
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* The restriction is represented by the osm id of the from way, the osm id of the
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* to way and the osm id of the via node. This representation must be post-processed
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* in the extractor to work with the edge-based data-model of OSRM:
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* Since the from and to way share the via-node a turn will have the following form:
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* ...----(a)-----(via)------(b)----...
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* So it can be represented by the tripe (a, via, b).
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*/
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class RestrictionParser
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{
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public:
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RestrictionParser(bool use_turn_restrictions,
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bool parse_conditionals,
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std::vector<std::string> &restrictions);
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boost::optional<InputConditionalTurnRestriction>
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TryParse(const osmium::Relation &relation) const;
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private:
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bool ShouldIgnoreRestriction(const std::string &except_tag_string) const;
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bool use_turn_restrictions;
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bool parse_conditionals;
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std::vector<std::string> restrictions;
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};
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}
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}
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#endif /* RESTRICTION_PARSER_HPP */
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