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