mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-11 20:35:50 +00:00
721 lines
16 KiB
C++
721 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape 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/NPL/
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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 or
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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 mozilla.org code.
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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) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsVoidArray.h"
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#include "nsCRT.h"
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#include "nsISizeOfHandler.h"
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#include "nsString.h"
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static const PRInt32 kGrowArrayBy = 4;
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static const PRInt32 kLinearThreshold = 16;
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static const PRInt32 kGrowthFactor = 1;
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inline PRInt32
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nsVoidArray::GetArraySize() const
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{
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return mImpl ? PRInt32(mImpl->mBits & kArraySizeMask) : 0;
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}
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inline void
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nsVoidArray::SetArraySize(PRInt32 aSize)
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{
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NS_PRECONDITION(mImpl, "can't set size");
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mImpl->mBits &= ~kArraySizeMask;
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mImpl->mBits |= PRUint32(aSize & kArraySizeMask);
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}
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inline PRBool
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nsVoidArray::IsArrayOwner() const
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{
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return mImpl ? PRBool(mImpl->mBits & kArrayOwnerMask) : PR_FALSE;
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}
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inline void
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nsVoidArray::SetArrayOwner(PRBool aOwner)
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{
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NS_PRECONDITION(mImpl, "can't set owner");
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if (aOwner)
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mImpl->mBits |= kArrayOwnerMask;
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else
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mImpl->mBits &= ~kArrayOwnerMask;
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}
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nsVoidArray::nsVoidArray()
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: mImpl(nsnull)
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{
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MOZ_COUNT_CTOR(nsVoidArray);
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}
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nsVoidArray::nsVoidArray(PRInt32 aCount)
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: mImpl(nsnull)
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{
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MOZ_COUNT_CTOR(nsVoidArray);
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if (aCount) {
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char* bytes = new char[sizeof(Impl) + sizeof(void*) * (aCount - 1)];
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mImpl = NS_REINTERPRET_CAST(Impl*, bytes);
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if (mImpl) {
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mImpl->mBits = 0;
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SetArraySize(aCount);
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mImpl->mCount = aCount;
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nsCRT::memset(mImpl->mArray, 0, mImpl->mCount * sizeof(void*));
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SetArrayOwner(PR_TRUE);
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}
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}
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}
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nsVoidArray& nsVoidArray::operator=(const nsVoidArray& other)
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{
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if (mImpl && IsArrayOwner())
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delete[] NS_REINTERPRET_CAST(char*, mImpl);
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PRInt32 otherCount = other.Count();
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if (otherCount) {
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char* bytes = new char[sizeof(Impl) + sizeof(void*) * (otherCount - 1)];
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mImpl = NS_REINTERPRET_CAST(Impl*, bytes);
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if (mImpl) {
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mImpl->mBits = 0;
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SetArraySize(otherCount);
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mImpl->mCount = otherCount;
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SetArrayOwner(PR_TRUE);
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}
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}
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else {
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mImpl = nsnull;
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}
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return *this;
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}
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nsVoidArray::~nsVoidArray()
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{
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MOZ_COUNT_DTOR(nsVoidArray);
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if (mImpl && IsArrayOwner())
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delete[] NS_REINTERPRET_CAST(char*, mImpl);
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}
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void
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nsVoidArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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if (aResult) {
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*aResult = sizeof(*this) + (mImpl ? sizeof(Impl) + (sizeof(void*) * (GetArraySize() - 1)) : 0);
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}
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}
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void* nsVoidArray::ElementAt(PRInt32 aIndex) const
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{
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if (aIndex < 0 || aIndex >= Count()) {
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return nsnull;
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}
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return mImpl->mArray[aIndex];
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}
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PRInt32 nsVoidArray::IndexOf(void* aPossibleElement) const
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{
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if (mImpl) {
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void** ap = mImpl->mArray;
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void** end = ap + mImpl->mCount;
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while (ap < end) {
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if (*ap == aPossibleElement) {
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return ap - mImpl->mArray;
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}
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ap++;
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}
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}
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return -1;
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}
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PRBool nsVoidArray::InsertElementAt(void* aElement, PRInt32 aIndex)
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{
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PRInt32 oldCount = Count();
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if (PRUint32(aIndex) > PRUint32(oldCount)) {
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// An invalid index causes the insertion to fail
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return PR_FALSE;
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}
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if (oldCount >= GetArraySize()) {
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// We have to grow the array. Grow by 4 slots if we're smaller
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// than 16 elements, or a power of two if we're larger.
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PRInt32 newCount = oldCount + ((oldCount >= kLinearThreshold) ? (oldCount / kGrowthFactor) : kGrowArrayBy);
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char* bytes = new char[sizeof(Impl) + sizeof(void*) * (newCount - 1)];
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Impl* newImpl = NS_REINTERPRET_CAST(Impl*, bytes);
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if (newImpl) {
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if (aIndex != 0)
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nsCRT::memcpy(newImpl->mArray, mImpl->mArray, aIndex * sizeof(void*));
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PRInt32 slide = oldCount - aIndex;
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if (0 != slide) {
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// Slide data over to make room for the insertion
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nsCRT::memcpy(newImpl->mArray + aIndex + 1, mImpl->mArray + aIndex,
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slide * sizeof(void*));
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}
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if (IsArrayOwner())
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delete[] NS_REINTERPRET_CAST(char*, mImpl);
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mImpl = newImpl;
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mImpl->mBits = 0;
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SetArraySize(newCount);
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mImpl->mCount = oldCount;
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SetArrayOwner(PR_TRUE);
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}
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}
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else {
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// The array is already large enough
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PRInt32 slide = oldCount - aIndex;
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if (0 != slide) {
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// Slide data over to make room for the insertion
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nsCRT::memmove(mImpl->mArray + aIndex + 1, mImpl->mArray + aIndex,
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slide * sizeof(void*));
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}
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}
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mImpl->mArray[aIndex] = aElement;
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mImpl->mCount++;
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return PR_TRUE;
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}
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PRBool nsVoidArray::ReplaceElementAt(void* aElement, PRInt32 aIndex)
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{
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if (PRUint32(aIndex) >= PRUint32(GetArraySize())) {
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PRInt32 oldCount = Count();
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PRInt32 requestedCount = aIndex + 1;
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PRInt32 growDelta = requestedCount - oldCount;
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PRInt32 newCount = oldCount + (growDelta > kGrowArrayBy ? growDelta : kGrowArrayBy);
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char* bytes = new char[sizeof(Impl) + sizeof(void*) * (newCount - 1)];
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Impl* newImpl = NS_REINTERPRET_CAST(Impl*, bytes);
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if (newImpl) {
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nsCRT::memset(newImpl->mArray, 0, newCount * sizeof(void*));
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if (mImpl != nsnull && aIndex != 0)
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nsCRT::memcpy(newImpl->mArray, mImpl->mArray, mImpl->mCount * sizeof(void*));
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if (IsArrayOwner())
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delete[] NS_REINTERPRET_CAST(char*, mImpl);
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mImpl = newImpl;
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mImpl->mBits = 0;
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SetArraySize(newCount);
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mImpl->mCount = oldCount;
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SetArrayOwner(PR_TRUE);
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}
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}
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mImpl->mArray[aIndex] = aElement;
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if (aIndex >= mImpl->mCount)
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mImpl->mCount = aIndex + 1;
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return PR_TRUE;
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}
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PRBool nsVoidArray::RemoveElementAt(PRInt32 aIndex)
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{
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PRInt32 oldCount = Count();
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if (PRUint32(aIndex) >= PRUint32(oldCount)) {
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// An invalid index causes the replace to fail
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return PR_FALSE;
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}
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// We don't need to move any elements if we're removing the
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// last element in the array
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if (aIndex < (oldCount - 1)) {
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nsCRT::memmove(mImpl->mArray + aIndex, mImpl->mArray + aIndex + 1,
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(oldCount - 1 - aIndex) * sizeof(void*));
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}
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mImpl->mCount--;
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return PR_TRUE;
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}
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PRBool nsVoidArray::RemoveElement(void* aElement)
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{
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if (mImpl) {
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void** ep = mImpl->mArray;
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void** end = ep + mImpl->mCount;
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while (ep < end) {
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void* e = *ep++;
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if (e == aElement) {
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ep--;
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return RemoveElementAt(PRInt32(ep - mImpl->mArray));
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}
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}
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}
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return PR_FALSE;
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}
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void nsVoidArray::Clear()
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{
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if (mImpl) {
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mImpl->mCount = 0;
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}
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}
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void nsVoidArray::Compact()
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{
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if (mImpl) {
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PRInt32 count = mImpl->mCount;
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if (IsArrayOwner() && GetArraySize() > count) {
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Impl* doomedImpl = mImpl;
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if (count > 0) {
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char* bytes = new char[sizeof(Impl) + sizeof(void*) * (count - 1)];
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Impl* newImpl = NS_REINTERPRET_CAST(Impl*, bytes);
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if (newImpl)
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nsCRT::memcpy(newImpl->mArray, mImpl->mArray, count * sizeof(void*));
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mImpl = newImpl;
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mImpl->mBits = 0;
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SetArraySize(count);
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mImpl->mCount = count;
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SetArrayOwner(PR_TRUE);
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}
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else {
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mImpl = nsnull;
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}
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delete[] NS_REINTERPRET_CAST(char*, doomedImpl);
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}
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}
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}
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PRBool nsVoidArray::EnumerateForwards(nsVoidArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = -1;
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PRBool running = PR_TRUE;
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if (mImpl) {
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while (running && (++index < mImpl->mCount)) {
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running = (*aFunc)(mImpl->mArray[index], aData);
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}
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}
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return running;
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}
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PRBool nsVoidArray::EnumerateBackwards(nsVoidArrayEnumFunc aFunc, void* aData)
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{
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PRBool running = PR_TRUE;
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if (mImpl) {
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PRInt32 index = Count();
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while (running && (0 <= --index)) {
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running = (*aFunc)(mImpl->mArray[index], aData);
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}
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}
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return running;
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}
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//----------------------------------------------------------------
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// nsAutoVoidArray
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nsAutoVoidArray::nsAutoVoidArray()
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: nsVoidArray()
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{
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mImpl = NS_REINTERPRET_CAST(Impl*, mAutoBuf);
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mImpl->mBits = 0;
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SetArraySize(kAutoBufSize);
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mImpl->mCount = 0;
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SetArrayOwner(PR_FALSE);
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::memset(mImpl->mArray, 0, mImpl->mCount * sizeof(void*));
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}
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//----------------------------------------------------------------
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// nsStringArray
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nsStringArray::nsStringArray(void)
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: nsVoidArray()
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{
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}
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nsStringArray::~nsStringArray(void)
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{
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Clear();
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}
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nsStringArray&
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nsStringArray::operator=(const nsStringArray& other)
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{
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// Copy the pointers
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nsVoidArray::operator=(other);
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// Now copy the strings
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for (PRInt32 i = Count() - 1; i >= 0; --i) {
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nsString* oldString = NS_STATIC_CAST(nsString*, other.ElementAt(i));
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mImpl->mArray[i] = new nsString(*oldString);
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}
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return *this;
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}
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void
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nsStringArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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PRUint32 sum = 0;
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nsVoidArray::SizeOf(aHandler, &sum);
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PRInt32 index = Count();
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while (0 <= --index) {
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nsString* string = NS_STATIC_CAST(nsString*, ElementAt(index));
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PRUint32 size;
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string->SizeOf(aHandler, &size);
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sum += size;
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}
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}
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void
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nsStringArray::StringAt(PRInt32 aIndex, nsString& aString) const
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{
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nsString* string = NS_STATIC_CAST(nsString*, nsVoidArray::ElementAt(aIndex));
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if (nsnull != string) {
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aString = *string;
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}
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else {
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aString.Truncate();
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}
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}
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nsString*
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nsStringArray::StringAt(PRInt32 aIndex) const
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{
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return NS_STATIC_CAST(nsString*, nsVoidArray::ElementAt(aIndex));
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}
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PRInt32
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nsStringArray::IndexOf(const nsString& aPossibleString) const
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{
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if (mImpl) {
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void** ap = mImpl->mArray;
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void** end = ap + mImpl->mCount;
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while (ap < end) {
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nsString* string = NS_STATIC_CAST(nsString*, *ap);
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if (string->Equals(aPossibleString)) {
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return ap - mImpl->mArray;
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}
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ap++;
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}
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}
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return -1;
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}
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PRInt32
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nsStringArray::IndexOfIgnoreCase(const nsString& aPossibleString) const
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{
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if (mImpl) {
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void** ap = mImpl->mArray;
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void** end = ap + mImpl->mCount;
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while (ap < end) {
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nsString* string = NS_STATIC_CAST(nsString*, *ap);
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if (string->EqualsIgnoreCase(aPossibleString)) {
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return ap - mImpl->mArray;
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}
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ap++;
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}
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}
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return -1;
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}
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PRBool
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nsStringArray::InsertStringAt(const nsString& aString, PRInt32 aIndex)
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{
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nsString* string = new nsString(aString);
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if (nsVoidArray::InsertElementAt(string, aIndex)) {
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return PR_TRUE;
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}
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delete string;
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return PR_FALSE;
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}
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PRBool
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nsStringArray::ReplaceStringAt(const nsString& aString, PRInt32 aIndex)
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{
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nsString* string = NS_STATIC_CAST(nsString*, nsVoidArray::ElementAt(aIndex));
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if (nsnull != string) {
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*string = aString;
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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PRBool
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nsStringArray::RemoveString(const nsString& aString)
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{
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PRInt32 index = IndexOf(aString);
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if (-1 < index) {
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return RemoveStringAt(index);
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}
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return PR_FALSE;
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}
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PRBool
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nsStringArray::RemoveStringIgnoreCase(const nsString& aString)
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{
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PRInt32 index = IndexOfIgnoreCase(aString);
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if (-1 < index) {
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return RemoveStringAt(index);
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}
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return PR_FALSE;
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}
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PRBool nsStringArray::RemoveStringAt(PRInt32 aIndex)
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{
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nsString* string = StringAt(aIndex);
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if (nsnull != string) {
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nsVoidArray::RemoveElementAt(aIndex);
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delete string;
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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void
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nsStringArray::Clear(void)
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{
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|
PRInt32 index = Count();
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|
while (0 <= --index) {
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nsString* string = NS_STATIC_CAST(nsString*, mImpl->mArray[index]);
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delete string;
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}
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nsVoidArray::Clear();
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}
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|
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PRBool
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nsStringArray::EnumerateForwards(nsStringArrayEnumFunc aFunc, void* aData)
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|
{
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|
PRInt32 index = -1;
|
|
PRBool running = PR_TRUE;
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|
if (mImpl) {
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|
while (running && (++index < mImpl->mCount)) {
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running = (*aFunc)(*NS_STATIC_CAST(nsString*, mImpl->mArray[index]), aData);
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}
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}
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return running;
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}
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PRBool
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nsStringArray::EnumerateBackwards(nsStringArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = Count();
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PRBool running = PR_TRUE;
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|
if (mImpl) {
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|
while (running && (0 <= --index)) {
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running = (*aFunc)(*NS_STATIC_CAST(nsString*, mImpl->mArray[index]), aData);
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}
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}
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return running;
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}
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//----------------------------------------------------------------
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// nsCStringArray
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nsCStringArray::nsCStringArray(void)
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|
: nsVoidArray()
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{
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}
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nsCStringArray::~nsCStringArray(void)
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{
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Clear();
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}
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nsCStringArray&
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nsCStringArray::operator=(const nsCStringArray& other)
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{
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// Copy the pointers
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nsVoidArray::operator=(other);
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|
|
// Now copy the strings
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|
for (PRInt32 i = Count() - 1; i >= 0; --i) {
|
|
nsCString* oldString = NS_STATIC_CAST(nsCString*, other.ElementAt(i));
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|
mImpl->mArray[i] = new nsCString(*oldString);
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}
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|
return *this;
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}
|
|
|
|
void
|
|
nsCStringArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
PRUint32 sum = 0;
|
|
nsVoidArray::SizeOf(aHandler, &sum);
|
|
PRInt32 index = Count();
|
|
while (0 <= --index) {
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, mImpl->mArray[index]);
|
|
PRUint32 size;
|
|
string->SizeOf(aHandler, &size);
|
|
sum += size;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsCStringArray::CStringAt(PRInt32 aIndex, nsCString& aCString) const
|
|
{
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, nsVoidArray::ElementAt(aIndex));
|
|
if (nsnull != string) {
|
|
aCString = *string;
|
|
}
|
|
else {
|
|
aCString.Truncate();
|
|
}
|
|
}
|
|
|
|
nsCString*
|
|
nsCStringArray::CStringAt(PRInt32 aIndex) const
|
|
{
|
|
return NS_STATIC_CAST(nsCString*, nsVoidArray::ElementAt(aIndex));
|
|
}
|
|
|
|
PRInt32
|
|
nsCStringArray::IndexOf(const nsCString& aPossibleString) const
|
|
{
|
|
if (mImpl) {
|
|
void** ap = mImpl->mArray;
|
|
void** end = ap + mImpl->mCount;
|
|
while (ap < end) {
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, *ap);
|
|
if (string->Equals(aPossibleString)) {
|
|
return ap - mImpl->mArray;
|
|
}
|
|
ap++;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
PRInt32
|
|
nsCStringArray::IndexOfIgnoreCase(const nsCString& aPossibleString) const
|
|
{
|
|
if (mImpl) {
|
|
void** ap = mImpl->mArray;
|
|
void** end = ap + mImpl->mCount;
|
|
while (ap < end) {
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, *ap);
|
|
if (string->EqualsIgnoreCase(aPossibleString)) {
|
|
return ap - mImpl->mArray;
|
|
}
|
|
ap++;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
PRBool
|
|
nsCStringArray::InsertCStringAt(const nsCString& aCString, PRInt32 aIndex)
|
|
{
|
|
nsCString* string = new nsCString(aCString);
|
|
if (nsVoidArray::InsertElementAt(string, aIndex)) {
|
|
return PR_TRUE;
|
|
}
|
|
delete string;
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsCStringArray::ReplaceCStringAt(const nsCString& aCString, PRInt32 aIndex)
|
|
{
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, nsVoidArray::ElementAt(aIndex));
|
|
if (nsnull != string) {
|
|
*string = aCString;
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsCStringArray::RemoveCString(const nsCString& aCString)
|
|
{
|
|
PRInt32 index = IndexOf(aCString);
|
|
if (-1 < index) {
|
|
return RemoveCStringAt(index);
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsCStringArray::RemoveCStringIgnoreCase(const nsCString& aCString)
|
|
{
|
|
PRInt32 index = IndexOfIgnoreCase(aCString);
|
|
if (-1 < index) {
|
|
return RemoveCStringAt(index);
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool nsCStringArray::RemoveCStringAt(PRInt32 aIndex)
|
|
{
|
|
nsCString* string = CStringAt(aIndex);
|
|
if (nsnull != string) {
|
|
nsVoidArray::RemoveElementAt(aIndex);
|
|
delete string;
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
void
|
|
nsCStringArray::Clear(void)
|
|
{
|
|
PRInt32 index = Count();
|
|
while (0 <= --index) {
|
|
nsCString* string = NS_STATIC_CAST(nsCString*, mImpl->mArray[index]);
|
|
delete string;
|
|
}
|
|
nsVoidArray::Clear();
|
|
}
|
|
|
|
|
|
|
|
PRBool
|
|
nsCStringArray::EnumerateForwards(nsCStringArrayEnumFunc aFunc, void* aData)
|
|
{
|
|
PRBool running = PR_TRUE;
|
|
|
|
if (mImpl) {
|
|
PRInt32 index = -1;
|
|
while (running && (++index < mImpl->mCount)) {
|
|
running = (*aFunc)(*NS_STATIC_CAST(nsCString*, mImpl->mArray[index]), aData);
|
|
}
|
|
}
|
|
return running;
|
|
}
|
|
|
|
PRBool
|
|
nsCStringArray::EnumerateBackwards(nsCStringArrayEnumFunc aFunc, void* aData)
|
|
{
|
|
PRBool running = PR_TRUE;
|
|
|
|
if (mImpl) {
|
|
PRInt32 index = Count();
|
|
while (running && (0 <= --index)) {
|
|
running = (*aFunc)(*NS_STATIC_CAST(nsCString*, mImpl->mArray[index]), aData);
|
|
}
|
|
}
|
|
return running;
|
|
}
|