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#ifndef RFL_UBJSON_WRITER_HPP_
#define RFL_UBJSON_WRITER_HPP_
#include <bit>
#include <exception>
#include <jsoncons_ext/ubjson/ubjson_encoder.hpp>
#include <map>
#include <sstream>
#include <stdexcept>
#include <string>
#include <string_view>
#include <type_traits>
#include <variant>
#include <vector>
#include "../Box.hpp"
#include "../Bytestring.hpp"
#include "../Ref.hpp"
#include "../Result.hpp"
#include "../always_false.hpp"
namespace rfl::ubjson {
class Writer {
using Encoder = jsoncons::ubjson::ubjson_bytes_encoder;
public:
struct UBJSONOutputArray {};
struct UBJSONOutputObject {};
struct UBJSONOutputVar {};
using OutputArrayType = UBJSONOutputArray;
using OutputObjectType = UBJSONOutputObject;
using OutputVarType = UBJSONOutputVar;
Writer(Encoder* _encoder);
~Writer();
OutputArrayType array_as_root(const size_t _size) const noexcept;
OutputObjectType object_as_root(const size_t _size) const noexcept;
OutputVarType null_as_root() const noexcept;
template <class T>
OutputVarType value_as_root(const T& _var) const noexcept {
return new_value(_var);
}
OutputArrayType add_array_to_array(const size_t _size,
OutputArrayType* _parent) const noexcept;
OutputArrayType add_array_to_object(const std::string_view& _name,
const size_t _size,
OutputObjectType* _parent) const noexcept;
OutputObjectType add_object_to_array(const size_t _size,
OutputArrayType* _parent) const noexcept;
OutputObjectType add_object_to_object(
const std::string_view& _name, const size_t _size,
OutputObjectType* _parent) const noexcept;
template <class T>
OutputVarType add_value_to_array(const T& _var,
OutputArrayType* _parent) const noexcept {
return new_value(_var);
}
template <class T>
OutputVarType add_value_to_object(const std::string_view& _name,
const T& _var,
OutputObjectType* _parent) const noexcept {
encoder_->key(_name);
return new_value(_var);
}
OutputVarType add_null_to_array(OutputArrayType* _parent) const noexcept;
OutputVarType add_null_to_object(const std::string_view& _name,
OutputObjectType* _parent) const noexcept;
void end_array(OutputArrayType* _arr) const noexcept;
void end_object(OutputObjectType* _obj) const noexcept;
private:
OutputArrayType new_array(const size_t _size) const noexcept;
OutputObjectType new_object(const size_t _size) const noexcept;
template <class T>
OutputVarType new_value(const T& _var) const noexcept {
if constexpr (std::is_same<std::remove_cvref_t<T>, std::string>()) {
encoder_->string_value(_var);
} else if constexpr (std::is_same<std::remove_cvref_t<T>,
rfl::Bytestring>()) {
encoder_->byte_string_value(_var);
} else if constexpr (std::is_same<std::remove_cvref_t<T>, bool>()) {
encoder_->bool_value(_var);
} else if constexpr (std::is_floating_point<std::remove_cvref_t<T>>()) {
encoder_->double_value(static_cast<double>(_var));
} else if constexpr (std::is_integral<std::remove_cvref_t<T>>()) {
encoder_->int64_value(static_cast<std::int64_t>(_var));
} else {
static_assert(rfl::always_false_v<T>, "Unsupported type.");
}
return OutputVarType{};
}
private:
/// The underlying TinyUBJSON encoder.
Encoder* const encoder_;
};
} // namespace rfl::ubjson
#endif
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