/* Copyright (C) 2003-2013 Runtime Revolution Ltd.

This file is part of LiveCode.

LiveCode is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License v3 as published by the Free

Software Foundation.

LiveCode is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with LiveCode. If not see <http://www.gnu.org/licenses/>. */

//

// Base double linked list class

//

#ifndef DLLIST_H

#define DLLIST_H

class MCDLlist

{

protected:

MCDLlist *nptr;

MCDLlist *pptr;

public:

MCDLlist()

{

pptr = nptr = this;

}

MCDLlist(const MCDLlist &dref)

{

nptr = pptr = this;

}

virtual ~MCDLlist();

// shared by buttons and text blocks

virtual void removelink(MCObject *optr);

MCDLlist *next()

{

return nptr;

}

MCDLlist *prev()

{

return pptr;

}

const MCDLlist *next() const

{

return nptr;

}

const MCDLlist *prev() const

{

return pptr;

}

void totop(MCDLlist *&list);

void insertto(MCDLlist *&list);

void appendto(MCDLlist *&list);

void append(MCDLlist *node);

void splitat(MCDLlist *node);

MCDLlist *remove(MCDLlist *&list);

#ifdef _DEBUG_MALLOC_INC

void verify(char *where);

#endif

};

#endif