45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
#ifndef SERVER_API_ROUTE_PARAMETERS_PARSER_HPP
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#define SERVER_API_ROUTE_PARAMETERS_PARSER_HPP
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#include "engine/api/base_parameters.hpp"
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#include "engine/api/tile_parameters.hpp"
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#include <boost/optional/optional.hpp>
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#include <type_traits>
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namespace osrm::server::api
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{
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// Note: this file provides only the interface for the generic parseParameters function.
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// The actual implementations for each concrete parameter type live in the cpp file.
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namespace detail
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{
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template <typename T>
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using is_parameter_t =
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std::integral_constant<bool,
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std::is_base_of<engine::api::BaseParameters, T>::value ||
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std::is_same<engine::api::TileParameters, T>::value>;
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} // namespace detail
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// Starts parsing and iter and modifies it until iter == end or parsing failed
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template <typename ParameterT,
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typename std::enable_if<detail::is_parameter_t<ParameterT>::value, int>::type = 0>
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std::optional<ParameterT> parseParameters(std::string::iterator &iter,
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const std::string::iterator end);
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// Copy on purpose because we need mutability
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template <typename ParameterT,
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typename std::enable_if<detail::is_parameter_t<ParameterT>::value, int>::type = 0>
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std::optional<ParameterT> parseParameters(std::string options_string)
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{
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auto first = options_string.begin();
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const auto last = options_string.end();
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return parseParameters<ParameterT>(first, last);
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}
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} // namespace osrm::server::api
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#endif
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