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#ifndef GENERIC_WRITER_HPP_
#define GENERIC_WRITER_HPP_
#include <cstddef>
#include <exception>
#include <functional>
#include <map>
#include <optional>
#include <sstream>
#include <stdexcept>
#include <string>
#include <string_view>
#include <type_traits>
#include <vector>
#include "../Generic.hpp"
#include "../Result.hpp"
#include "../Variant.hpp"
#include "../always_false.hpp"
namespace rfl::generic {
struct Writer {
struct OutputArray {
Generic::Array* val_;
};
struct OutputObject {
Generic::Object* val_;
};
using OutputArrayType = OutputArray;
using OutputObjectType = OutputObject;
using OutputVarType = Generic;
Writer() {}
~Writer() = default;
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 {
root_ = to_generic(_var);
return root_;
}
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 {
const auto g = to_generic(_var);
_parent->val_->push_back(g);
return g;
}
template <class T>
OutputVarType add_value_to_object(const std::string_view& _name,
const T& _var,
OutputObjectType* _parent) const noexcept {
const auto g = to_generic(_var);
_parent->val_->insert(_name, g);
return g;
}
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*) const noexcept {}
void end_object(OutputObjectType*) const noexcept {}
OutputVarType& root() { return root_; }
private:
template <class T>
OutputVarType to_generic(const T& _var) const noexcept {
if constexpr (std::is_same<std::remove_cvref_t<T>, std::string>()) {
return OutputVarType(_var);
} else if constexpr (std::is_same<std::remove_cvref_t<T>, bool>()) {
return OutputVarType(_var);
} else if constexpr (std::is_floating_point<std::remove_cvref_t<T>>()) {
return OutputVarType(static_cast<double>(_var));
} else if constexpr (std::is_integral<std::remove_cvref_t<T>>()) {
return OutputVarType(static_cast<int64_t>(_var));
} else {
static_assert(always_false_v<T>, "Unsupported type");
}
return OutputVarType{};
}
private:
mutable OutputVarType root_;
};
} // namespace rfl::generic
#endif
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