//////////////////////////////////////////////////////////////////////////////
//文件 ObjectSeg.h
//主要功能: 
//		模板数组基础类
//程序编写:		2011-7-07
/////////////////////////////////////////////////////////////////////////////

#ifndef objectset_h
#define objectset_h

#include "VectorSet.h"
#include "vectorAccess.h"

/*!\brief Set of pointers to objects

The TObjectSet does not manage the objects.
*/

namespace NSet
{

template <class T>
class TObjectSet : public CVectorSet
{
public:

    inline 					TObjectSet();
    inline					TObjectSet(const TObjectSet<T>&);
    inline virtual			~TObjectSet()		{ deepErase(); }

    virtual bool			isManaged() const	{ return false; }

    inline bool				nullAllowed() const	{ return allow0_; }
    inline void				allowNull(bool yn=true);
    inline virtual int		size() const		{ return vec_.size(); }

    inline virtual bool		IsValidIndex(int) const;
    inline virtual int		indexOf(const T*) const;

    inline virtual T*		operator[](int idx) const	{ /*if ( !IsValidIndex(idx) )*/ return (T*)vec_[idx]; }
    //inline virtual const T*	operator[](int idx) const { /*if ( !IsValidIndex(idx) )*/ return (const T*)vec_[idx]; }
	inline virtual T*		GetAt(int idx) const { return (T*)vec_[idx]; }

    inline virtual T*				operator[](const T*) const; //!< check & unconst
	inline TObjectSet<T>&			operator =(const TObjectSet<T>&);
	inline virtual TObjectSet<T>&	operator +=(T*);
	inline virtual TObjectSet<T>&	operator -=(T*);

    inline virtual T*		replace(int idx,T*);
    inline virtual void		insertAt(T* newptr, int);
    inline virtual void		insertAfter(T* newptr, int);
    inline virtual void		copy(const TObjectSet<T>&);
    inline virtual void		append(const TObjectSet<T>&);
    inline virtual void		swap( int idx0, int idx1 );

	inline virtual void		Add(T* ptr) { push(ptr); }
	inline virtual void		push(T* ptr);
    inline virtual T*		pop();

	inline void				deepErase();							//深度空间释放，包括指针指向的空间
	inline virtual void		erase()		{ plainErase(); }			//简单空间释放，并不释放指针指向的空间
	virtual inline T*		remove(int,bool preserve_order=true);	/*!<\returns the removed pointer. */
	inline virtual void		remove(int from,int to);


protected:

    TVectorAccess<void*>	vec_;
    bool					allow0_;

public:

    inline void			plainErase()	{ vec_.erase(); }	/*!< Not virtual. Don't use casually. */
};


//! empty the TObjectSet deleting all objects pointed to.
template <class T>
inline void deepErase( TObjectSet<T>& os )
{
	for ( int sz=os.size(), idx=0; idx<sz; idx++ )
		delete os[idx];
	os.plainErase();
}

//! empty the TObjectSet deleting all objects pointed to.
template <class T>
inline void deepEraseArr( TObjectSet<T>& os )
{
    for ( int sz=os.size(), idx=0; idx<sz; idx++ )
		delete [] os[idx];
    os.plainErase();
}


//! append copies of one set's objects to another TObjectSet.
template <class T,class S>
inline void deepAppend( TObjectSet<T>& to, const TObjectSet<S>& from )
{
    const int sz = from.size();
	for ( int idx=0; idx<sz; idx++ )
		to += from[idx] ? new T( *from[idx] ) : 0;
}


//! fill an TObjectSet with copies of the objects in the other set.
template <class T,class S>
inline void deepCopy( TObjectSet<T>& to, const TObjectSet<S>& from )
{
    if ( &to == &from ) return;
    deepErase( to );
    to.allowNull( from.nullAllowed() );
    deepAppend( to, from );
}


//! Locate object in set
template <class T,class S>
inline int indexOf( const TObjectSet<T>& os, const S& val )
{
	for ( int idx=0; idx<os.size(); idx++ )
	{
		if ( *os[idx] == val )
			return idx;
	}
	return -1;
}


//! Get const object in set
template <class T,class S>
inline const T* find( const TObjectSet<T>& os, const S& val )
{
    const int idx = indexOf( os, val );
    return idx == -1 ? 0 : os[idx];
}


//! Get object in set
template <class T,class S>
inline T* find( TObjectSet<T>& os, const S& val )
{
    const int idx = indexOf( os, val );
    return idx == -1 ? 0 : os[idx];
}


//! Sort TObjectSet. Must have operator > defined for elements
template <class T>
inline void sort( TObjectSet<T>& os )
{
    T* tmp; const int sz = os.size();
	for ( int d=sz/2; d>0; d=d/2 )
		for ( int i=d; i<sz; i++ )
			for ( int j=i-d; j>=0 && *os[j]>*os[j+d]; j-=d )
				os.swap( j, j+d );
}


// Member function implementations
template <class T> inline
TObjectSet<T>::TObjectSet() : allow0_(false)
{

}


template <class T> inline
TObjectSet<T>::TObjectSet( const TObjectSet<T>& t )
{
	*this = t;
}


template <class T> inline
TObjectSet<T>& TObjectSet<T>::operator =( const TObjectSet<T>& os )
{
	allow0_ = os.allow0_;
	copy(os);
	return *this; 
}

template <class T> inline
void TObjectSet<T>::deepErase()
{
	::deepErase( *this );
}

template <class T> inline
void TObjectSet<T>::allowNull( bool yn )
{
	allow0_ = yn;
}


template <class T> inline
bool TObjectSet<T>::IsValidIndex( int idx ) const
{
	return idx>=0 && idx<size();
}


template <class T> inline
T* TObjectSet<T>::operator[]( const T* t ) const
{
    const int idx = indexOf(t);
    return idx < 0 ? 0 : const_cast<T*>(t);
}


template <class T> inline
int TObjectSet<T>::indexOf( const T* ptr ) const
{
    for ( int idx=0; idx<size(); idx++ )
	if ( (const T*)vec_[idx] == ptr ) return idx;
	    return -1;
}


template <class T> inline
TObjectSet<T>& TObjectSet<T>::operator +=( T* ptr )
{
	if ( ptr || allow0_ )
		vec_.push_back( (void*)ptr );
	return *this;
}


template <class T> inline
TObjectSet<T>& TObjectSet<T>::operator -=( T* ptr )
{
	if ( ptr || allow0_ )
		vec_.erase( (void*)ptr );
	return *this;
}


template <class T> inline
void TObjectSet<T>::swap( int idx0, int idx1 )
{
	if ( idx0<0 || idx0>=size() || idx1<0 || idx1>=size() )
		return;
	void* tmp = vec_[idx0];
	vec_[idx0] = vec_[idx1];
	vec_[idx1] = tmp;
}


template <class T> inline
T* TObjectSet<T>::replace( int idx, T* newptr )
{
    if ( idx<0 || idx>=size() ) return 0;
    T* ptr = (T*)vec_[idx];
    vec_[idx] = (void*)newptr; return ptr;
}


template <class T> inline
void TObjectSet<T>::insertAt( T* newptr, int idx )
{
    vec_.insert( idx, (void*)newptr );
}


template <class T> inline
void TObjectSet<T>::insertAfter( T* newptr, int idx )
{
	*this += newptr;
	if ( idx < 0 )
		vec_.moveToStart( (void*)newptr );
	else
		vec_.moveAfter( (void*)newptr, vec_[idx] );
}


template <class T> inline
void TObjectSet<T>::copy( const TObjectSet<T>& os )
{
	if ( &os != this )
	{
		erase();
		allow0_ = os.allow0_;
		append( os );
	}
}


template <class T> inline
void TObjectSet<T>::append( const TObjectSet<T>& os )
{
	const int sz = os.size();
	vec_.setCapacity( size()+sz );
	for ( int idx=0; idx<sz; idx++ )
		*this += const_cast<T*>( os[idx] );
}


template <class T> inline
void TObjectSet<T>::push( T* ptr )
{ *this +=ptr; }


template <class T> inline
T* TObjectSet<T>::pop()
{
	int sz = size();
	if ( !sz ) return 0;
	return remove( sz-1 );
}


template <class T> inline
T* TObjectSet<T>::remove( int idx, bool kporder )
{
	T* res = (T*)vec_[idx];
	if ( kporder )
		vec_.remove( idx );
	else
	{
		const int lastidx = size()-1;
		if ( idx!=lastidx )
			vec_[idx] = vec_[lastidx];
		vec_.remove( lastidx );
	}
	return res;
}


template <class T> inline
void TObjectSet<T>::remove( int i1, int i2 )
{ vec_.remove( i1, i2 ); }


}//namesapce


#endif