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#ifndef RFL_MSGPACK_WRITER_HPP_
#define RFL_MSGPACK_WRITER_HPP_
#include <msgpack.h>
#include <exception>
#include <map>
#include <sstream>
#include <stdexcept>
#include <string>
#include <string_view>
#include <type_traits>
#include <variant>
#include <vector>
#include "../Box.hpp"
#include "../Ref.hpp"
#include "../Result.hpp"
#include "../always_false.hpp"
#include "../Bytestring.hpp"
namespace rfl::msgpack {
class Writer {
public:
struct MsgpackOutputArray {};
struct MsgpackOutputObject {};
struct MsgpackOutputVar {};
using OutputArrayType = MsgpackOutputArray;
using OutputObjectType = MsgpackOutputObject;
using OutputVarType = MsgpackOutputVar;
Writer(msgpack_packer* _pk);
~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 {
msgpack_pack_str(pk_, _name.size());
msgpack_pack_str_body(pk_, _name.data(), _name.size());
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 {
using Type = std::remove_cvref_t<T>;
if constexpr (std::is_same<Type, std::string>()) {
msgpack_pack_str(pk_, _var.size());
msgpack_pack_str_body(pk_, _var.c_str(), _var.size());
} else if constexpr (std::is_same<Type, rfl::Bytestring>()) {
msgpack_pack_bin(pk_, _var.size());
msgpack_pack_bin_body(pk_, _var.c_str(), _var.size());
} else if constexpr (std::is_same<Type, bool>()) {
if (_var) {
msgpack_pack_true(pk_);
} else {
msgpack_pack_false(pk_);
}
} else if constexpr (std::is_floating_point<Type>()) {
msgpack_pack_double(pk_, static_cast<double>(_var));
} else if constexpr (std::is_integral<Type>()) {
msgpack_pack_int64(pk_, static_cast<std::int64_t>(_var));
} else {
static_assert(rfl::always_false_v<T>, "Unsupported type.");
}
return OutputVarType{};
}
private:
/// The underlying packer.
msgpack_packer* pk_;
};
} // namespace rfl::msgpack
#endif
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