63 lines
2.9 KiB
C++
63 lines
2.9 KiB
C++
#ifndef REFLECTIVE_RAPIDJSON_JSON_REFLECTOR_BOOST_HANA_H
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#define REFLECTIVE_RAPIDJSON_JSON_REFLECTOR_BOOST_HANA_H
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/*!
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* \file reflector-boosthana.h
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* \brief Contains generic functions relying on Boost.Hana which can replace the code which would
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* otherwise had to be generated.
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* \remarks
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* These functions use boost::hana::keys() and boost::hana::at_key() rather than the "plain"
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* for-loop shown in the introspection examples of the Boost.Hana documentation. The reason is that
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* the "plain" for-loop involves making copies. This costs performance and - more importantly - prevents
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* modifying the actual object.
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*/
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#include "./reflector.h"
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// TODO: find out which header files are actually relevant rather than including the master
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#include <boost/hana.hpp>
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namespace ReflectiveRapidJSON {
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namespace Reflector {
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// define functions to "push" values to a RapidJSON array or object
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template <typename Type,
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Traits::DisableIfAny<std::is_integral<Type>, std::is_floating_point<Type>, std::is_pointer<Type>,
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Traits::All<Traits::IsIteratable<Type>, Traits::Not<Traits::IsSpecializationOf<Type, std::basic_string>>>>...>
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void push(const Type &reflectable, RAPIDJSON_NAMESPACE::Value::Object &value, RAPIDJSON_NAMESPACE::Document::AllocatorType &allocator)
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{
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boost::hana::for_each(boost::hana::keys(reflectable), [&reflectable, &value, &allocator](auto key) {
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push(boost::hana::at_key(reflectable, key), boost::hana::to<char const *>(key), value, allocator);
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});
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}
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// define functions to "pull" values from a RapidJSON array or object
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template <typename Type,
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Traits::DisableIfAny<std::is_integral<Type>, std::is_floating_point<Type>, std::is_pointer<Type>,
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Traits::All<Traits::IsIteratable<Type>, Traits::Not<Traits::IsSpecializationOf<Type, std::basic_string>>>>...>
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void pull(
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Type &reflectable, RAPIDJSON_NAMESPACE::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>>::ValueIterator &value, JsonDeserializationErrors *errors)
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{
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boost::hana::for_each(boost::hana::keys(reflectable), [&reflectable, &value, &errors](auto key) {
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pull(boost::hana::at_key(reflectable, key), boost::hana::to<char const *>(key), value, errors);
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});
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}
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template <typename Type,
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Traits::DisableIfAny<std::is_integral<Type>, std::is_floating_point<Type>, std::is_pointer<Type>,
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Traits::All<Traits::IsIteratable<Type>, Traits::Not<Traits::IsSpecializationOf<Type, std::basic_string>>>>...>
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void pull(Type &reflectable, const RAPIDJSON_NAMESPACE::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>>::ConstObject &value,
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JsonDeserializationErrors *errors)
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{
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boost::hana::for_each(boost::hana::keys(reflectable), [&reflectable, &value, &errors](auto key) {
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pull(boost::hana::at_key(reflectable, key), boost::hana::to<char const *>(key), value, errors);
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});
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}
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} // namespace Reflector
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} // namespace ReflectiveRapidJSON
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#endif // REFLECTIVE_RAPIDJSON_JSON_REFLECTOR_BOOST_HANA_H
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