character_width.hpp

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#if !defined(TETENGO_TEXT_GRAPHEMESPLITTING_CHARACTERWIDTH_HPP)
#define TETENGO_TEXT_GRAPHEMESPLITTING_CHARACTERWIDTH_HPP
 
#include <cstddef>
 
#include <boost/core/noncopyable.hpp>
 
 
namespace tetengo::text::grapheme_splitting
{
    class character_width : private boost::noncopyable
    {
    public:
        // types

        enum class class_type
        {
            ambiguous, 
            fullwidth, 
            halfwidth, 
            narrow, 
            wide, 
            neutral, 
        };

        enum class emoji_type
        {
            emoji, 
            normal, 
        };
 
 
        // constructors and destructor

        virtual ~character_width();
 
 
        // functions

        [[nodiscard]] std::size_t width_of(class_type class_, emoji_type emoji) const;
 
 
    private:
        // virtual functions
 
        virtual std::size_t width_of_impl(class_type class_, emoji_type emoji) const = 0;
    };
 
 
}
 
 
#endif