json_grammar.hpp

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#if !defined(TETENGO_JSON_JSONGRAMMAR_HPP)
#define TETENGO_JSON_JSONGRAMMAR_HPP
 
#include <functional>
#include <memory>
#include <string_view>
#include <unordered_map>
 
#include <boost/core/noncopyable.hpp>
 
 
namespace tetengo::json
{
    class reader;
 
 
    class json_grammar : private boost::noncopyable
    {
    public:
        // types
 
        enum class primitive_type_type
        {
            string, 
            number, 
            boolean, 
            null, 
        };
 
        using primitive_handler_type = std::function<bool(primitive_type_type type, const std::string_view& value)>;
 
        enum class structure_type_type
        {
            object, 
            member, 
            array, 
        };
 
        enum class structure_open_close_type
        {
            open, 
            close, 
        };
 
        using structure_handler_type = std::function<bool(
            structure_type_type                                           type,
            structure_open_close_type                                     open_close,
            const std::unordered_map<std::string_view, std::string_view>& attributes)>;
 
 
        // constructors and destructor
 
        json_grammar(primitive_handler_type primitive_handler, structure_handler_type structure_handler);
 
        ~json_grammar();
 
 
        // functions
 
        [[nodiscard]] bool parse(reader& reader_) const;
 
 
    private:
        // types
 
        class impl;
 
 
        // variables
 
        std::unique_ptr<impl> m_p_impl;
    };
 
 
}
 
 
#endif