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#ifndef RFL_XML_WRITER_HPP_
#define RFL_XML_WRITER_HPP_
#include <pugixml.hpp>
#include <string>
#include <string_view>
#include <type_traits>
#include "../Ref.hpp"
#include "../always_false.hpp"
namespace rfl {
namespace xml {
struct Writer {
struct XMLOutputArray {
XMLOutputArray(const std::string_view& _name,
const Ref<pugi::xml_node>& _node)
: name_(_name), node_(_node) {}
std::string_view name_;
Ref<pugi::xml_node> node_;
};
struct XMLOutputObject {
XMLOutputObject(const Ref<pugi::xml_node>& _node) : node_(_node) {}
Ref<pugi::xml_node> node_;
};
struct XMLOutputVar {
XMLOutputVar(const Ref<pugi::xml_node>& _node) : node_(_node) {}
Ref<pugi::xml_node> node_;
};
using OutputArrayType = XMLOutputArray;
using OutputObjectType = XMLOutputObject;
using OutputVarType = XMLOutputVar;
Writer(const Ref<pugi::xml_node>& _root, const std::string& _root_name);
~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 {
const auto str = to_string(_var);
return value_as_root_impl(str);
}
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 str = to_string(_var);
return add_value_to_array_impl(str, _parent);
}
template <class T>
OutputVarType add_value_to_object(
const std::string_view& _name, const T& _var, OutputObjectType* _parent,
const bool _is_attribute = false) const noexcept {
const auto str = to_string(_var);
return add_value_to_object_impl(_name, str, _parent, _is_attribute);
}
OutputVarType add_null_to_array(OutputArrayType* _parent) const noexcept;
OutputVarType add_null_to_object(
const std::string_view& _name, OutputObjectType* _parent,
const bool _is_attribute = false) const noexcept;
void end_array(OutputArrayType* _arr) const noexcept;
void end_object(OutputObjectType* _obj) const noexcept;
private:
template <class T>
std::string to_string(const T& _val) const noexcept {
if constexpr (std::is_same<std::remove_cvref_t<T>, std::string>()) {
return _val;
} else if constexpr (std::is_same<std::remove_cvref_t<T>, bool>()) {
return _val ? "true" : "false";
} else if constexpr (std::is_floating_point<std::remove_cvref_t<T>>() ||
std::is_integral<std::remove_cvref_t<T>>()) {
return std::to_string(_val);
} else {
static_assert(always_false_v<T>, "Unsupported type");
}
}
OutputVarType value_as_root_impl(const std::string& _str) const noexcept;
OutputVarType add_value_to_array_impl(
const std::string& _str, OutputArrayType* _parent) const noexcept;
OutputVarType add_value_to_object_impl(
const std::string_view& _name, const std::string& _str,
OutputObjectType* _parent,
const bool _is_attribute = false) const noexcept;
public:
Ref<pugi::xml_node> root_;
std::string root_name_;
};
} // namespace xml
} // namespace rfl
#endif // RFL_XML_WRITER_HPP_
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