osrm-backend/include/server/api/nearest_parameter_grammar.hpp
2016-04-05 22:58:32 +02:00

49 lines
1.1 KiB
C++

#ifndef NEAREST_PARAMETERS_GRAMMAR_HPP
#define NEAREST_PARAMETERS_GRAMMAR_HPP
#include "engine/api/nearest_parameters.hpp"
#include "server/api/base_parameters_grammar.hpp"
#include <boost/spirit/include/qi_lit.hpp>
#include <boost/spirit/include/qi_uint.hpp>
#include <boost/spirit/include/qi_grammar.hpp>
#include <boost/spirit/include/qi_action.hpp>
#include <boost/spirit/include/qi_optional.hpp>
namespace osrm
{
namespace server
{
namespace api
{
namespace qi = boost::spirit::qi;
struct NearestParametersGrammar final : public BaseParametersGrammar
{
using Iterator = std::string::iterator;
NearestParametersGrammar() : BaseParametersGrammar(root_rule, parameters)
{
const auto set_number = [this](const unsigned number)
{
parameters.number_of_results = number;
};
nearest_rule = (qi::lit("number=") >> qi::uint_)[set_number];
root_rule =
query_rule >> -qi::lit(".json") >> -(qi::lit("?") >> (nearest_rule | base_rule) % '&');
}
engine::api::NearestParameters parameters;
private:
qi::rule<Iterator> root_rule;
qi::rule<Iterator> nearest_rule;
};
}
}
}
#endif