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116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is nsValueArray.h/nsValueArray.cpp code, released
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* Dec 28, 2001.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 2001 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Garrett Arch Blythe, 20-December-2001
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*/
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#ifndef nsValueArray_h___
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#define nsValueArray_h___
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//
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// nsValueArray.h
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//
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// Implement an array class to store unsigned integer values.
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// The maximum value must be known up front. Once known, the
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// smallest memory representation will be attempted; i.e. if the
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// maximum value was 1275, then 2 bytes (uint16) would represent each value
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// in the array instead of 4 bytes (uint32).
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//
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#include "nscore.h"
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typedef PRUint32 nsValueArrayCount;
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typedef PRUint32 nsValueArrayIndex;
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typedef PRUint32 nsValueArrayValue;
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#define NSVALUEARRAY_INVALID ((nsValueArrayValue)-1)
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class NS_COM nsValueArray {
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public:
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nsValueArray(nsValueArrayValue aMaxValue,
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nsValueArrayCount aInitialCapacity = 0);
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~nsValueArray();
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//
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// Assignment.
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//
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public:
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nsValueArray& operator=(const nsValueArray& other);
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//
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// Array size information.
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// Ability to add more values without growing is Capacity - Count.
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//
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public:
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inline nsValueArrayCount Count() const {
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return mCount;
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}
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inline nsValueArrayCount Capacity() const {
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return mCapacity;
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}
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void Compact();
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//
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// Array access.
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//
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public:
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nsValueArrayValue ValueAt(nsValueArrayIndex aIndex) const;
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inline nsValueArrayValue operator[](nsValueArrayIndex aIndex) const {
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return ValueAt(aIndex);
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}
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nsValueArrayIndex IndexOf(nsValueArrayValue aPossibleValue) const;
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inline PRBool AppendValue(nsValueArrayValue aValue) {
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return InsertValueAt(aValue, Count());
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}
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inline PRBool RemoveValue(nsValueArrayValue aValue) {
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return RemoveValueAt(IndexOf(aValue));
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}
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PRBool InsertValueAt(nsValueArrayValue aValue, nsValueArrayIndex aIndex);
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PRBool RemoveValueAt(nsValueArrayIndex aIndex);
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//
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// Data members.
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//
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private:
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nsValueArrayCount mCount;
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nsValueArrayCount mCapacity;
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PRUint8* mValueArray;
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PRUint8 mBytesPerValue;
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};
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#endif /* nsValueArray_h___ */
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