ReloadSession.h

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#pragma once
 
#include "common/Export.h"
#include "common/StateValue.h"
 
#include <string>
#include <vector>
 
struct SQVM;
typedef struct SQVM* HSQUIRRELVM;
 
namespace eve::dev {
 
class EVENGINE_API_FOUNDATION ReloadSession {
public:
    static ReloadSession& instance();
 
    ReloadSession(const ReloadSession&)            = delete;
    ReloadSession& operator=(const ReloadSession&) = delete;
 
    bool begin(HSQUIRRELVM vm, std::string* err = nullptr);
 
    bool commit(HSQUIRRELVM vm, std::string* err = nullptr);
 
    bool abort(HSQUIRRELVM vm, std::string* err = nullptr);
 
    bool active() const { return active_; }
 
private:
    ReloadSession() = default;
 
    bool restore(HSQUIRRELVM vm, const StateValue& state, std::string* err);
 
    StateValue buffer_;
    std::vector<std::string> persistentRoots_;
    std::vector<std::string> transientRoots_;
    bool                     active_ = false;
};
 
}  // namespace eve::dev