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////////////////////////////////////////////////////////////////////////////////
// The Loki Library
// Copyright (c) 2005 Peter Kümmel
// Permission to use, copy, modify, distribute and sell this software for any
// purpose is hereby granted without fee, provided that the above copyright
// notice appear in all copies and that both that copyright notice and this
// permission notice appear in supporting documentation.
// The author makes no representations about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
////////////////////////////////////////////////////////////////////////////////
#ifndef LOKI_ORDEREDSTATIC_INC_
#define LOKI_ORDEREDSTATIC_INC_
// $Id: OrderedStatic.h 751 2006-10-17 19:50:37Z syntheticpp $
#include <vector>
#include <iostream>
#include "LokiExport.h"
#include "Singleton.h"
#include "Typelist.h"
#include "Sequence.h"
// usage: see test/OrderedStatic
namespace Loki
{
namespace Private
{
////////////////////////////////////////////////////////////////////////////////
// polymorph base class for OrderedStatic template,
// necessary because of the creator
////////////////////////////////////////////////////////////////////////////////
class LOKI_EXPORT OrderedStaticCreatorFunc
{
public:
virtual void createObject() = 0;
protected:
OrderedStaticCreatorFunc();
virtual ~OrderedStaticCreatorFunc();
private:
OrderedStaticCreatorFunc(const OrderedStaticCreatorFunc&);
};
////////////////////////////////////////////////////////////////////////////////
// template base clase for OrderedStatic template,
// common for all specializations
////////////////////////////////////////////////////////////////////////////////
template<class T>
class OrderedStaticBase : public OrderedStaticCreatorFunc
{
public:
T& operator*()
{
return *val_;
}
T* operator->()
{
return val_;
}
protected:
OrderedStaticBase(unsigned int longevity) : val_(0), longevity_(longevity)
{
}
virtual ~OrderedStaticBase()
{
}
void SetLongevity(T* ptr)
{
val_=ptr;
Loki::SetLongevity(val_,longevity_);
}
private:
OrderedStaticBase();
OrderedStaticBase(const OrderedStaticBase&);
OrderedStaticBase& operator=(const OrderedStaticBase&);
T* val_;
unsigned int longevity_;
};
////////////////////////////////////////////////////////////////////////////////
// OrderedStaticManagerClass implements details
// OrderedStaticManager is then defined as a Singleton
////////////////////////////////////////////////////////////////////////////////
class LOKI_EXPORT OrderedStaticManagerClass
{
public:
OrderedStaticManagerClass();
virtual ~OrderedStaticManagerClass();
typedef void (OrderedStaticCreatorFunc::*Creator)();
void createObjects();
void registerObject(unsigned int longevity,OrderedStaticCreatorFunc*,Creator);
private:
OrderedStaticManagerClass(const OrderedStaticManagerClass&);
OrderedStaticManagerClass& operator=(const OrderedStaticManagerClass&);
struct Data
{
Data(unsigned int,OrderedStaticCreatorFunc*, Creator);
unsigned int longevity;
OrderedStaticCreatorFunc* object;
Creator creator;
};
std::vector<Data> staticObjects_;
unsigned int max_longevity_;
unsigned int min_longevity_;
};
}// namespace Private
////////////////////////////////////////////////////////////////////////////////
// OrderedStaticManager is only a Singleton typedef
////////////////////////////////////////////////////////////////////////////////
typedef Loki::SingletonHolder
<
Loki::Private::OrderedStaticManagerClass,
Loki::CreateUsingNew,
Loki::NoDestroy,
Loki::SingleThreaded
>
OrderedStaticManager;
////////////////////////////////////////////////////////////////////////////////
// template OrderedStatic template:
// L : longevity
// T : object type
// TList : creator parameters
////////////////////////////////////////////////////////////////////////////////
template<unsigned int L, class T, class TList = Loki::NullType>
class OrderedStatic;
////////////////////////////////////////////////////////////////////////////////
// OrderedStatic specializations
////////////////////////////////////////////////////////////////////////////////
template<unsigned int L, class T>
class OrderedStatic<L, T, Loki::NullType> : public Private::OrderedStaticBase<T>
{
public:
OrderedStatic() : Private::OrderedStaticBase<T>(L)
{
OrderedStaticManager::Instance().registerObject
(L,this,&Private::OrderedStaticCreatorFunc::createObject);
}
void createObject()
{
Private::OrderedStaticBase<T>::SetLongevity(new T);
}
private:
OrderedStatic(const OrderedStatic&);
OrderedStatic& operator=(const OrderedStatic&);
};
template<unsigned int L, class T, typename P1>
class OrderedStatic<L, T, Loki::Seq<P1> > : public Private::OrderedStaticBase<T>
{
public:
OrderedStatic(P1 p) : Private::OrderedStaticBase<T>(L), para_(p)
{
OrderedStaticManager::Instance().registerObject
(L,this,&Private::OrderedStaticCreatorFunc::createObject);
}
void createObject()
{
Private::OrderedStaticBase<T>::SetLongevity(new T(para_));
}
private:
OrderedStatic();
OrderedStatic(const OrderedStatic&);
OrderedStatic& operator=(const OrderedStatic&);
P1 para_;
};
template<unsigned int L, class T, typename P1>
class OrderedStatic<L, T, P1(*)() > : public Private::OrderedStaticBase<T>
{
public:
typedef P1(*Func)();
OrderedStatic(Func p) : Private::OrderedStaticBase<T>(L), para_(p)
{
OrderedStaticManager::Instance().registerObject
(L,this,&Private::OrderedStaticCreatorFunc::createObject);
}
void createObject()
{
Private::OrderedStaticBase<T>::SetLongevity(new T(para_()));
}
private:
OrderedStatic();
OrderedStatic(const OrderedStatic&);
OrderedStatic& operator=(const OrderedStatic&);
Func para_;
};
}// namespace Loki
#endif // end file guardian
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