Emily Boudreaux
ec13264050
A bug was discovered in glaze which prevented valid toml output. We have switched to toml++ and reflect-cpp. The interface has remained the same so this should not break any code
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
#ifndef RFL_PARSING_PARSER_OPTIONAL_HPP_
|
|
#define RFL_PARSING_PARSER_OPTIONAL_HPP_
|
|
|
|
#include <map>
|
|
#include <optional>
|
|
#include <type_traits>
|
|
|
|
#include "../Ref.hpp"
|
|
#include "../Result.hpp"
|
|
#include "../always_false.hpp"
|
|
#include "Parent.hpp"
|
|
#include "Parser_base.hpp"
|
|
#include "schema/Type.hpp"
|
|
#include "schemaful/IsSchemafulReader.hpp"
|
|
#include "schemaful/IsSchemafulWriter.hpp"
|
|
#include "schemaful/OptionalReader.hpp"
|
|
|
|
namespace rfl {
|
|
namespace parsing {
|
|
|
|
template <class R, class W, class T, class ProcessorsType>
|
|
requires AreReaderAndWriter<R, W, std::optional<T>>
|
|
struct Parser<R, W, std::optional<T>, ProcessorsType> {
|
|
using InputVarType = typename R::InputVarType;
|
|
|
|
using ParentType = Parent<W>;
|
|
|
|
static Result<std::optional<T>> read(const R& _r,
|
|
const InputVarType& _var) noexcept {
|
|
if constexpr (schemaful::IsSchemafulReader<R>) {
|
|
using O = schemaful::OptionalReader<R, W, std::remove_cvref_t<T>,
|
|
ProcessorsType>;
|
|
const auto to_optional = [&](const auto& _u) -> Result<std::optional<T>> {
|
|
return _r.template read_union<std::optional<T>, O>(_u);
|
|
};
|
|
return _r.to_union(_var).and_then(to_optional);
|
|
} else {
|
|
if (_r.is_empty(_var)) {
|
|
return std::optional<T>();
|
|
}
|
|
const auto to_opt = [](auto&& _t) {
|
|
return std::make_optional<T>(std::forward<decltype(_t)>(_t));
|
|
};
|
|
return Parser<R, W, std::remove_cvref_t<T>, ProcessorsType>::read(_r,
|
|
_var)
|
|
.transform(to_opt);
|
|
}
|
|
}
|
|
|
|
template <class P>
|
|
static void write(const W& _w, const std::optional<T>& _o, const P& _parent) {
|
|
if constexpr (schemaful::IsSchemafulWriter<W>) {
|
|
auto u = ParentType::add_union(_w, _parent);
|
|
using UnionType = typename ParentType::template Union<decltype(u)>;
|
|
auto p =
|
|
UnionType{.index_ = static_cast<size_t>(_o ? 0 : 1), .union_ = &u};
|
|
if (_o) {
|
|
Parser<R, W, std::remove_cvref_t<T>, ProcessorsType>::write(_w, *_o, p);
|
|
} else {
|
|
ParentType::add_null(_w, p);
|
|
}
|
|
} else {
|
|
if (_o) {
|
|
Parser<R, W, std::remove_cvref_t<T>, ProcessorsType>::write(_w, *_o,
|
|
_parent);
|
|
} else {
|
|
ParentType::add_null(_w, _parent);
|
|
}
|
|
}
|
|
}
|
|
|
|
static schema::Type to_schema(
|
|
std::map<std::string, schema::Type>* _definitions) {
|
|
using U = std::remove_cvref_t<T>;
|
|
return schema::Type{schema::Type::Optional{Ref<schema::Type>::make(
|
|
Parser<R, W, U, ProcessorsType>::to_schema(_definitions))}};
|
|
}
|
|
};
|
|
|
|
} // namespace parsing
|
|
} // namespace rfl
|
|
|
|
#endif
|