Ram.hh

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#ifndef RAM_HH
#define RAM_HH
 
#include "SimpleDebuggable.hh"
#include "MemBuffer.hh"
#include "openmsx.hh"
#include "static_string_view.hh"
#include <optional>
#include <string>
 
namespace openmsx {
 
class XMLElement;
class DeviceConfig;
class Ram;
 
class RamDebuggable final : public SimpleDebuggable
{
public:
        RamDebuggable(MSXMotherBoard& motherBoard, const std::string& name,
                      static_string_view description, Ram& ram);
        byte read(unsigned address) override;
        void write(unsigned address, byte value) override;
private:
        Ram& ram;
};
 
class Ram
{
public:
        Ram(const DeviceConfig& config, const std::string& name,
            static_string_view description, size_t size);
 
        Ram(const XMLElement& xml, size_t size);
 
        [[nodiscard]] const byte& operator[](size_t addr) const {
                return ram[addr];
        }
        [[nodiscard]] byte& operator[](size_t addr) {
                return ram[addr];
        }
        [[nodiscard]] auto size()  const { return sz; }
        [[nodiscard]] auto data()        { return ram.data(); }
        [[nodiscard]] auto data()  const { return ram.data(); }
        [[nodiscard]] auto begin()       { return ram.data(); }
        [[nodiscard]] auto begin() const { return ram.data(); }
        [[nodiscard]] auto end()         { return ram.data() + sz; }
        [[nodiscard]] auto end()   const { return ram.data() + sz; }
 
        [[nodiscard]] const std::string& getName() const;
        void clear(byte c = 0xff);
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        const XMLElement& xml;
        MemBuffer<byte> ram;
        size_t sz; // must come before debuggable
        const std::optional<RamDebuggable> debuggable; // can be nullopt
};
 
} // namespace openmsx
 
#endif