VM.h

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#pragma once
#include "Buffer.h"
#include <bitset>
#include <functional>
#include <memory>
#include <unordered_map>
 
namespace mana
{
    class Actor;
    class Plugin;
 
    class VM final : Noncopyable, public std::enable_shared_from_this<VM>
    {
        friend class Actor;
 
        static constexpr uint32_t Nil = static_cast<uint32_t>(~0);
 
    public:
        using ExternalFunctionType = std::function<void(const std::shared_ptr<Actor>& actor, void* structPointer)>;
 
    public:
        VM() = default;
        VM(const VM&) = delete;
        VM(VM&&) noexcept = delete;
        VM& operator=(const VM&) = delete;
        VM& operator=(VM&&) noexcept = delete;
        ~VM();
        
        void LoadPlugin(const std::string& filename);
        void LoadPlugins(const std::string& directoryName);
 
        void RegisterFunction(const std::string& name, const ExternalFunctionType& function);
        template <class T>
        void RegisterMemberFunction(const std::string& name, T* instance, void (T::*method)(const std::shared_ptr<Actor>&, void*));
        template <class T>
        void RegisterMemberFunction(const std::string& name, const T* instance, void (T::*method)(const std::shared_ptr<Actor>&, void*) const);
        template <class T>
        void RegisterMemberFunction(const std::string& name, const std::shared_ptr<T>& instance, void (T::*method)(const std::shared_ptr<Actor>&, void*));
        template <class T>
        void RegisterMemberFunction(const std::string& name, const std::shared_ptr<T>& instance, void (T::*method)(const std::shared_ptr<Actor>&, void*) const);
        template <class T>
        void RegisterMemberFunction(const std::string& name, const std::weak_ptr<T>& instance, void (T::*method)(const std::shared_ptr<Actor>&, void*));
        template <class T>
        void RegisterMemberFunction(const std::string& name, const std::weak_ptr<T>& instance, void (T::*method)(const std::shared_ptr<Actor>&, void*) const);
 
        void LoadProgram(const std::string& path);
        void LoadProgram(const std::shared_ptr<const void>& program);
        void UnloadProgram();
                
        void Restart();
        bool Run();
        [[nodiscard]] bool IsRunning() const;
 
        void Execute(const std::function<void()>& function);
 
        void RequestAll(const int32_t level, const char* actionName, const std::shared_ptr<Actor>& sender) const;
        bool Request(const int32_t level, const char* actorName, const char* actionName, const std::shared_ptr<Actor>& sender);
        void YieldAll() const;
        [[nodiscard]] std::shared_ptr<Actor> FindActor(const char* name);
        [[nodiscard]] std::string_view GetActorName(const std::shared_ptr<Actor>& actor) const;
        [[nodiscard]] std::shared_ptr<Actor> CloneActor(const std::shared_ptr<Actor>& actor, const char* newName);
        [[nodiscard]] std::shared_ptr<Actor> CreateActor(const char* name, const char* newName);
        [[nodiscard]] std::shared_ptr<Actor> CreateActorFromPhantom(const char* name, const char* newName);
        [[nodiscard]] bool IsInInitAction() const;
        [[nodiscard]] bool IsFinishInitAction() const;
        
        void SetSystemRequest(const bool enable);
        [[nodiscard]] bool IsSystemRequestEnabled() const;
        
        [[nodiscard]] uint32_t GetFrameCounter() const;
        [[nodiscard]] float_t GetDeltaTime() const;
        [[nodiscard]] bool IsFrameChanged() const;
    private:
        [[nodiscard]] int8_t GetInt8FromMemory(const uint32_t address) const;
        [[nodiscard]] uint8_t GetUint8FromMemory(const uint32_t address) const;
        [[nodiscard]] int16_t GetInt16FromMemory(const uint32_t address) const;
        [[nodiscard]] uint16_t GetUint16FromMemory(const uint32_t address) const;
        [[nodiscard]] int32_t GetInt32FromMemory(const uint32_t address) const;
        [[nodiscard]] uint32_t GetUint32FromMemory(const uint32_t address) const;
        [[nodiscard]] float GetFloatFromMemory(const uint32_t address) const;
        [[nodiscard]] const char* GetStringFromMemory(const uint32_t address) const;
        //[[nodiscard]] char* GetStringFromData(const uint32_t address);
        [[nodiscard]] int32_t GetOpecode(const uint32_t address) const;
 
    private:
        [[nodiscard]] ExternalFunctionType FindFunction(const std::string& functionName) const;
        [[nodiscard]] Buffer& GetGlobalVariables() noexcept;
        [[nodiscard]] const Buffer& GetGlobalVariables() const noexcept;
        [[nodiscard]] Buffer& GetStaticVariables() noexcept;
        [[nodiscard]] const Buffer& GetStaticVariables() const noexcept;
 
    private:
        std::shared_ptr<Plugin> mPlugin;
        std::shared_ptr<const void> mProgram;
        const FileHeader* mFileHeader = nullptr;
        const uint8_t* mInstructionPool = nullptr;
        const char* mConstantPool = nullptr;
        //std::vector<,*> m,Array;                  //!< , オブジェクトへの配列
        std::unordered_map<std::string, ExternalFunctionType> mFunctions;
        std::unordered_map<std::string_view, std::shared_ptr<Actor>> mActors;       
        std::unordered_map<std::string_view, const ActorInfoHeader*> mPhantoms;     
        Buffer mGlobalVariables;
        Buffer mStaticVariables;
        
        uint32_t mFrameCounter = 0;
        enum Flag : uint8_t
        {
            DebugMode,                  
            FrameChanged,               
            InitializeActionRunning,    
            InitializeActionFinished,   
            Initialized,                
            Requested,                  
            EnableSystemRequest         
        };
        std::bitset<8> mFlag;
    };
}
 
#include "VM.inl"