Rom.hh

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#ifndef ROM_HH
#define ROM_HH

#include "MemBuffer.hh"
#include "sha1.hh"
#include "openmsx.hh"
#include "noncopyable.hh"
#include <string>
#include <memory>
#include <cassert>

namespace openmsx {

class MSXMotherBoard;
class XMLElement;
class DeviceConfig;
class File;
class FileContext;
class CliComm;
class RomDebuggable;

class Rom : private noncopyable
{
public:
        Rom(const std::string& name, const std::string& description,
            const DeviceConfig& config, const std::string& id = "");
        virtual ~Rom();

        const byte& operator[](unsigned address) const {
                assert(address < size);
                return rom[address];
        }
        unsigned getSize() const { return size; }

        std::string getFilename() const;
        const std::string& getName() const;
        const std::string& getDescription() const;
        const Sha1Sum& getOriginalSHA1() const;
        const Sha1Sum& getPatchedSHA1() const;

private:
        void init(MSXMotherBoard& motherBoard, const XMLElement& config,
                  const FileContext& context);
        bool checkSHA1(const XMLElement& config);

        const byte* rom;
        MemBuffer<byte> extendedRom;

        std::unique_ptr<File> file;

        mutable Sha1Sum originalSha1;
        Sha1Sum patchedSha1;
        std::string name;
        const std::string description;
        unsigned size;

        // This must come after 'name':
        //   the destructor of RomDebuggable calls Rom::getName(), which still
        //   needs the Rom::name member.
        std::unique_ptr<RomDebuggable> romDebuggable;
};

} // namespace openmsx

#endif