gecko-dev/xpcom/ds/nsVoidArray.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsVoidArray_h___
#define nsVoidArray_h___
#include "nscore.h"
class nsISizeOfHandler;
// Enumerator callback function. Return PR_FALSE to stop
typedef PRBool (*nsVoidArrayEnumFunc)(void* aElement, void *aData);
/// A basic zero-based array of void*'s that manages its own memory
class NS_BASE nsVoidArray {
public:
nsVoidArray();
nsVoidArray(PRInt32 aCount); // initial count of aCount elements set to nsnull
~nsVoidArray();
nsVoidArray& operator=(const nsVoidArray& other);
void SizeOf(nsISizeOfHandler* aHandler) const;
PRInt32 Count() const {
return mCount;
}
void* ElementAt(PRInt32 aIndex) const;
void* operator[](PRInt32 aIndex) const { return ElementAt(aIndex); }
PRInt32 IndexOf(void* aPossibleElement) const;
PRBool InsertElementAt(void* aElement, PRInt32 aIndex);
PRBool ReplaceElementAt(void* aElement, PRInt32 aIndex);
PRBool AppendElement(void* aElement) {
return InsertElementAt(aElement, mCount);
}
PRBool RemoveElement(void* aElement);
PRBool RemoveElementAt(PRInt32 aIndex);
void Clear();
void Compact();
PRBool EnumerateForwards(nsVoidArrayEnumFunc aFunc, void* aData);
PRBool EnumerateBackwards(nsVoidArrayEnumFunc aFunc, void* aData);
protected:
void** mArray;
PRInt32 mArraySize;
PRInt32 mCount;
private:
/// Copy constructors are not allowed
nsVoidArray(const nsVoidArray& other);
};
#endif /* nsVoidArray_h___ */