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#ifndef QMLJS_MANAGED_H
#define QMLJS_MANAGED_H

#include <QtCore/QString>
#include <QtCore/QVector>
#include <QtCore/QDebug>
#include <wtf/Platform.h>

namespace QQmlJS {

namespace VM {

class MemoryManager;
struct Object;
struct ObjectPrototype;
struct ExecutionContext;
struct ScriptFunction;

struct Managed
{
private:
    void *operator new(size_t);
    Managed(const Managed &other);
    void operator = (const Managed &other);

protected:
    Managed() : markBit(0), inUse(1), extensible(true), unused(0) { }
    virtual ~Managed();

public:
    void *operator new(size_t size, MemoryManager *mm);
    void operator delete(void *ptr);

protected:
    virtual void getCollectables(QVector<Object *> &objects) = 0;

private:
    friend class MemoryManager;
    friend struct Object;
    friend struct ObjectPrototype;
    friend struct FunctionObject;
    friend struct ExecutionContext;
    friend struct ScriptFunction;

    union {
        Managed *nextFree;
        struct {
            quintptr markBit :  1;
            quintptr inUse   :  1;
            quintptr extensible : 1; // used by Object
            quintptr needsActivation : 1; // used by FunctionObject
            quintptr usesArgumentsObject : 1; // used by FunctionObject
            quintptr strictMode : 1; // used by FunctionObject
#if CPU(X86_64)
            quintptr unused  : 58;
#elif CPU(X86)
            quintptr unused  : 26;
#else
#error "implement me"
#endif
        };
    };
};

}
}

#endif