106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
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#ifndef RFL_PARSING_MAPPARSER_HPP_
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#define RFL_PARSING_MAPPARSER_HPP_
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#include <map>
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#include <stdexcept>
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#include <string>
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#include <type_traits>
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#include "../Ref.hpp"
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#include "../Result.hpp"
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#include "../always_false.hpp"
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#include "MapReader.hpp"
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#include "Parent.hpp"
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#include "Parser_base.hpp"
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#include "schema/Type.hpp"
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#include "to_single_error_message.hpp"
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namespace rfl {
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namespace parsing {
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template <class R, class W, class MapType, class ProcessorsType>
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requires AreReaderAndWriter<R, W, MapType>
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struct MapParser {
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public:
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using InputObjectType = typename R::InputObjectType;
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using InputVarType = typename R::InputVarType;
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using OutputObjectType = typename W::OutputObjectType;
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using OutputVarType = typename W::OutputVarType;
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using KeyType = std::remove_cvref_t<typename MapType::value_type::first_type>;
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using ValueType =
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std::remove_cvref_t<typename MapType::value_type::second_type>;
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using ParentType = Parent<W>;
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static Result<MapType> read(const R& _r, const InputVarType& _var) noexcept {
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const auto to_map = [&](auto obj) -> Result<MapType> {
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return make_map(_r, obj);
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};
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return _r.to_object(_var).and_then(to_map);
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}
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template <class P>
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static void write(const W& _w, const MapType& _m, const P& _parent) noexcept {
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auto obj = ParentType::add_object(_w, _m.size(), _parent);
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for (const auto& [k, v] : _m) {
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if constexpr (internal::has_reflection_type_v<KeyType>) {
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using ReflT = typename KeyType::ReflectionType;
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if constexpr (std::is_integral_v<ReflT> ||
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std::is_floating_point_v<ReflT>) {
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const auto name = std::to_string(k.reflection());
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const auto new_parent = typename ParentType::Object{name, &obj};
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Parser<R, W, std::remove_cvref_t<ValueType>, ProcessorsType>::write(
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_w, v, new_parent);
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} else {
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const auto name = k.reflection();
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const auto new_parent = typename ParentType::Object{name, &obj};
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Parser<R, W, std::remove_cvref_t<ValueType>, ProcessorsType>::write(
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_w, v, new_parent);
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}
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} else if constexpr (std::is_integral_v<KeyType> ||
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std::is_floating_point_v<KeyType>) {
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const auto name = std::to_string(k);
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const auto new_parent = typename ParentType::Object{name, &obj};
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Parser<R, W, std::remove_cvref_t<ValueType>, ProcessorsType>::write(
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_w, v, new_parent);
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} else {
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const auto new_parent = typename ParentType::Object{k, &obj};
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Parser<R, W, std::remove_cvref_t<ValueType>, ProcessorsType>::write(
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_w, v, new_parent);
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}
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}
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_w.end_object(&obj);
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}
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static schema::Type to_schema(
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std::map<std::string, schema::Type>* _definitions) {
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return schema::Type{schema::Type::StringMap{Ref<schema::Type>::make(
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Parser<R, W, ValueType, ProcessorsType>::to_schema(_definitions))}};
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}
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private:
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static Result<MapType> make_map(const R& _r, const InputObjectType& _obj) {
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MapType map;
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std::vector<Error> errors;
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const auto map_reader =
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MapReader<R, W, MapType, ProcessorsType>(&_r, &map, &errors);
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const auto err = _r.read_object(map_reader, _obj);
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if (err) {
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return *err;
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}
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if (errors.size() != 0) {
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return to_single_error_message(errors);
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}
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return map;
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}
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};
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} // namespace parsing
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} // namespace rfl
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#endif
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