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/*
* CENA C++ Utilities
*
* by Stephane Chatty
*
* Copyright 1992-1995
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* plain and generic lists (original ideas by Yves Berteaud)
*
* $Id$
* $CurLog$
*/
#ifndef List_H_
#define List_H_
#include "cplus_bugs.h"
#include <sys/types.h>
class CcuAllocator;
typedef void CcuListItem;
typedef void* CcuListIndex;
#ifdef CPLUS_BUG20
class CcuListLink;
#endif
class CcuList {
friend class CcuListIter;
#ifndef CPLUS_BUG20
class CcuListLink {
static CcuAllocator* ListLinkMem;
public:
CcuListItem* Entry;
CcuListLink* Next;
inline CcuListLink (CcuListItem* e, CcuListLink* n = 0) { Entry = e; Next = n ? n : this; }
CcuListLink* Previous ();
void* operator new (size_t);
void operator delete (void*);
};
#endif
public:
enum list_status { NoError, WasEmpty, TooEarly, TooFar, BadIterator };
enum list_remove { All = -1 };
private:
CcuListLink* LastLink;
list_status StatusFlag;
CcuListIndex InsertAfterLink (CcuListLink*, CcuListItem*);
CcuListIndex InsertBeforeLink (CcuListLink*, CcuListItem*);
CcuListItem* RemoveAfterLink (CcuListLink*);
public:
inline CcuList () : LastLink (0), StatusFlag (NoError) { }
CcuList (CcuListItem*);
CcuList (const CcuList&);
~CcuList ();
CcuList& operator = (const CcuList&);
inline list_status GetStatus () const { return StatusFlag; }
inline int IsEmpty () const { return !LastLink; }
CcuListItem* First ();
CcuListItem* Last ();
CcuListItem* Nth (int n);
int Length () const;
int Find (CcuListItem*, int* = 0) const;
CcuListIndex Append (CcuListItem*);
CcuListIndex Prepend (CcuListItem*);
inline CcuList& operator << (CcuListItem* it) { Append (it); return *this; }
CcuListItem* RemoveFirst ();
CcuListItem* RemoveLast ();
int Remove (CcuListItem*, int = 1);
int Remove (int (*) (CcuListItem*), int = 1);
void Clear ();
CcuListIndex InsertAfter (const CcuListIter&, CcuListItem*);
CcuListIndex InsertBefore (const CcuListIter&, CcuListItem*);
CcuListItem* RemoveAfter (const CcuListIter&);
};
class CcuListIter {
friend class CcuList;
public:
enum listiter_status { Normal, StartOfList, EndOfList };
private:
const CcuList* TheList;
#ifdef CPLUS_BUG20
CcuListLink* CurLink;
#else
CcuList::CcuListLink* CurLink;
#endif
listiter_status StatusFlag;
public:
inline CcuListIter (const CcuList& l) : TheList (&l), CurLink (0), StatusFlag (StartOfList) { }
CcuListIter (const CcuList&, CcuListIndex);
inline void Reset () { CurLink = 0; StatusFlag = StartOfList; }
inline CcuListIter& operator = (const CcuList& l) { TheList = &l; CurLink = 0; StatusFlag = StartOfList; return *this; }
inline CcuListIter& operator = (const CcuListIter& li) { TheList = li.TheList; CurLink = li.CurLink; StatusFlag = li.StatusFlag; return *this; }
CcuListIter& operator ++ ();
#ifndef CPLUS_BUG16
CcuListIter& operator ++ (int);
#endif
CcuListItem* operator * () const;
int Find (CcuListItem*);
inline listiter_status GetStatus () const { return StatusFlag; }
inline operator int () const { return StatusFlag == Normal; }
};
#ifndef CPLUS_BUG19
template <class ITEM> class CcuListIterOf;
template <class ITEM> class CcuListOf : public CcuList {
public:
inline CcuListOf () : CcuList () {}
inline CcuListOf (ITEM* it) : CcuList (it) {}
inline ITEM* First () { return (ITEM*) (CcuList::First ()); }
inline ITEM* Last () { return (ITEM*) (CcuList::Last ()); }
inline ITEM* Nth (int n) { return (ITEM*) (CcuList::Nth (n)); }
inline int Find (ITEM* it, int* r = 0) const { return CcuList::Find (it, r); }
inline CcuListIndex Append (ITEM* it) { return CcuList::Append (it); }
inline CcuListIndex Prepend (ITEM* it) { return CcuList::Prepend (it); }
inline CcuListOf<ITEM>& operator << (ITEM* it) { CcuList::Append (it); return *this; }
inline ITEM* RemoveFirst () { return (ITEM*) (CcuList::RemoveFirst ()); }
inline ITEM* RemoveLast () { return (ITEM*) (CcuList::RemoveLast ()); }
inline int Remove (ITEM* it, int nb = 1) { return CcuList::Remove (it, nb); }
inline int Remove (int (*p) (ITEM*), int nb = 1) { return CcuList::Remove ((int (*) (void*)) p, nb); }
inline CcuListIndex InsertAfter (const CcuListIterOf <ITEM>& li, ITEM*it) { return CcuList::InsertAfter (li, it); }
inline CcuListIndex InsertBefore (const CcuListIterOf <ITEM>& li, ITEM* it) { return CcuList::InsertBefore (li, it); }
inline ITEM* RemoveAfter (const CcuListIterOf <ITEM>& li) { return (ITEM*) CcuList::RemoveAfter (li); }
};
template <class ITEM> class CcuListIterOf : public CcuListIter {
public:
inline CcuListIterOf (const CcuListOf <ITEM>& l) : CcuListIter (l) { }
inline CcuListIterOf<ITEM>& operator = (const CcuListOf <ITEM>& l) { return (CcuListIterOf <ITEM>&) CcuListIter::operator = (l); }
inline CcuListIterOf<ITEM>& operator = (const CcuListIterOf <ITEM>& li) { return (CcuListIterOf <ITEM>&) CcuListIter::operator = (li); }
inline CcuListIterOf<ITEM>& operator ++ () { return (CcuListIterOf <ITEM>&) CcuListIter::operator ++ (); }
inline ITEM* operator * () const { return (ITEM*) CcuListIter::operator * (); }
inline int Find (ITEM* it) { return CcuListIter::Find (it); }
};
#endif /* CPLUS_BUG19 */
typedef CcuListItem CcuStackItem;
/* CPLUS_BUG10 */
class CcuStack : _private CcuList {
public:
CcuList :: Clear;
CcuList :: IsEmpty;
CcuList :: GetStatus;
inline void Push (CcuStackItem* p) { Prepend (p); }
inline CcuStackItem* Pop () { return RemoveFirst (); }
inline CcuStackItem* Top () { return First (); }
};
#ifndef CPLUS_BUG19
template <class ITEM> class CcuStackOf : public CcuStack {
public:
inline void Push (ITEM* p) { CcuStack::Push (p); }
inline ITEM* Pop () { return (ITEM*) CcuStack::Pop (); }
inline ITEM* Top () { return (ITEM*) CcuStack::Top (); }
inline operator const CcuListOf <ITEM>& () { return *(CcuListOf <ITEM>*) this; }
};
#endif /* CPLUS_BUG19 */
typedef CcuListItem CcuQueueItem;
/* CPLUS_BUG10 */
class CcuQueue : _private CcuList {
public:
CcuList :: Clear;
CcuList :: IsEmpty;
CcuList :: GetStatus;
inline void Put (CcuQueueItem* p) { Append (p); }
inline CcuQueueItem* Get () { return RemoveFirst (); }
inline operator const CcuList& () { return *this; }
};
#ifndef CPLUS_BUG19
template <class ITEM> class CcuQueueOf : public CcuQueue {
public:
inline void Put (ITEM* p) { CcuQueue::Put (p); }
inline ITEM* Get () { return (ITEM*) CcuQueue::Get (); }
inline operator const CcuListOf <ITEM>& () { return *(CcuListOf <ITEM>*) this; }
};
#endif /* CPLUS_BUG19 */
#endif /* List_H_ */
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