osrm-backend/include/server/api/nearest_parameter_grammar.hpp
2016-04-08 21:03:50 +02:00

44 lines
1002 B
C++

#ifndef NEAREST_PARAMETERS_GRAMMAR_HPP
#define NEAREST_PARAMETERS_GRAMMAR_HPP
#include "engine/api/nearest_parameters.hpp"
#include "server/api/base_parameters_grammar.hpp"
//#define BOOST_SPIRIT_DEBUG
#include <boost/spirit/include/qi.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