xml.hpp

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#ifndef DONUT_XML_HPP
#define DONUT_XML_HPP
 
#include <cstddef>     // std::size_t
#include <memory>      // std::unique_ptr
#include <stdexcept>   // std::runtime_error
#include <string>      // std::string
#include <string_view> // std::string_view
 
namespace donut::xml {
 
struct Error : std::runtime_error {
    std::string_view::iterator position;
 
    std::size_t lineNumber;
 
    Error(const std::string& message, std::string_view::iterator position, std::size_t lineNumber)
        : std::runtime_error(message)
        , position(position)
        , lineNumber(lineNumber) {}
 
    Error(const char* message, std::string_view::iterator position, std::size_t lineNumber)
        : std::runtime_error(message)
        , position(position)
        , lineNumber(lineNumber) {}
};
 
struct Attribute {
    std::string name{};                
    std::string value{};               
    std::unique_ptr<Attribute> next{}; 
};
 
struct Element {
    std::string tag{};                       
    std::string content{};                   
    std::unique_ptr<Attribute> attributes{}; 
    std::unique_ptr<Element> children{};     
    std::unique_ptr<Element> next{};         
};
 
struct Document {
    [[nodiscard]] static Document parse(std::string_view xmlString);
 
    std::unique_ptr<Element> declaration{}; 
    std::unique_ptr<Element> root{};        
};
 
} // namespace donut::xml
 
#endif