IPSPatch.hh

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#ifndef IPSPATCH_HH
#define IPSPATCH_HH
 
#include "PatchInterface.hh"
#include "Filename.hh"
#include <vector>
#include <memory>
 
namespace openmsx {
 
class IPSPatch final : public PatchInterface
{
public:
        IPSPatch(Filename filename,
                 std::unique_ptr<const PatchInterface> parent);
 
        void copyBlock(size_t src, std::span<uint8_t> dst) const override;
        [[nodiscard]] size_t getSize() const override { return size; }
        [[nodiscard]] std::vector<Filename> getFilenames() const override;
 
private:
        struct Chunk {
                size_t startAddress;
                std::vector<uint8_t> content;
 
                [[nodiscard]] size_t size() const { return content.size(); }
                [[nodiscard]] size_t stopAddress() const { return startAddress + size(); }
                [[nodiscard]] auto begin() const { return content.begin(); }
                [[nodiscard]] auto end  () const { return content.end(); }
        };
 
        const Filename filename;
        const std::unique_ptr<const PatchInterface> parent;
        const std::vector<Chunk> chunks; // sorted on startAddress
        const size_t size;
 
private:
        // Helper functions called from constructor
        [[nodiscard]] std::vector<Chunk> parseChunks() const;
        [[nodiscard]] size_t calcSize() const;
};
 
} // namespace openmsx
 
#endif