mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-29 07:42:04 +00:00
360 lines
8.8 KiB
C++
360 lines
8.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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.
|
|
*/
|
|
|
|
#include "nsSupportsArray.h"
|
|
#include "nsSupportsArrayEnumerator.h"
|
|
|
|
static const PRUint32 kGrowArrayBy = 8;
|
|
|
|
nsSupportsArray::nsSupportsArray()
|
|
{
|
|
NS_INIT_REFCNT();
|
|
mArray = &(mAutoArray[0]);
|
|
mArraySize = kAutoArraySize;
|
|
mCount = 0;
|
|
}
|
|
|
|
nsSupportsArray::~nsSupportsArray()
|
|
{
|
|
DeleteArray();
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsSupportsArray, nsISupportsArray::IID());
|
|
|
|
void nsSupportsArray::DeleteArray(void)
|
|
{
|
|
Clear();
|
|
if (mArray != &(mAutoArray[0])) {
|
|
delete[] mArray;
|
|
mArray = &(mAutoArray[0]);
|
|
mArraySize = kAutoArraySize;
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsISupportsArray&)
|
|
nsISupportsArray::operator=(const nsISupportsArray& other)
|
|
{
|
|
NS_ASSERTION(0, "should be an abstract method");
|
|
return *this; // bogus
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsISupportsArray&)
|
|
nsSupportsArray::operator=(const nsISupportsArray& aOther)
|
|
{
|
|
PRUint32 otherCount = aOther.Count();
|
|
|
|
if (otherCount > (PRInt32)mArraySize) {
|
|
DeleteArray();
|
|
mArraySize = otherCount;
|
|
mArray = new nsISupports*[mArraySize];
|
|
}
|
|
else {
|
|
Clear();
|
|
}
|
|
mCount = otherCount;
|
|
while (0 < otherCount--) {
|
|
mArray[otherCount] = aOther.ElementAt(otherCount);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::Equals(const nsISupportsArray* aOther) const
|
|
{
|
|
if (0 != aOther) {
|
|
const nsSupportsArray* other = (const nsSupportsArray*)aOther;
|
|
if (mCount == other->mCount) {
|
|
PRUint32 index = mCount;
|
|
while (0 < index--) {
|
|
if (mArray[index] != other->mArray[index]) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsISupports*)
|
|
nsSupportsArray::ElementAt(PRUint32 aIndex) const
|
|
{
|
|
if ((0 <= aIndex) && (aIndex < mCount)) {
|
|
nsISupports* element = mArray[aIndex];
|
|
NS_ADDREF(element);
|
|
return element;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRInt32)
|
|
nsSupportsArray::IndexOf(const nsISupports* aPossibleElement, PRUint32 aStartIndex) const
|
|
{
|
|
if ((0 <= aStartIndex) && (aStartIndex < mCount)) {
|
|
const nsISupports** start = (const nsISupports**)mArray; // work around goofy compiler behavior
|
|
const nsISupports** ep = (start + aStartIndex);
|
|
const nsISupports** end = (start + mCount);
|
|
while (ep < end) {
|
|
if (aPossibleElement == *ep) {
|
|
return (ep - start);
|
|
}
|
|
ep++;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRInt32)
|
|
nsSupportsArray::LastIndexOf(const nsISupports* aPossibleElement) const
|
|
{
|
|
if (0 < mCount) {
|
|
const nsISupports** start = (const nsISupports**)mArray; // work around goofy compiler behavior
|
|
const nsISupports** ep = (start + mCount);
|
|
while (start <= --ep) {
|
|
if (aPossibleElement == *ep) {
|
|
return (ep - start);
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::InsertElementAt(nsISupports* aElement, PRUint32 aIndex)
|
|
{
|
|
if ((0 <= aIndex) && (aIndex <= mCount)) {
|
|
if (mArraySize < (mCount + 1)) { // need to grow the array
|
|
mArraySize += kGrowArrayBy;
|
|
nsISupports** oldArray = mArray;
|
|
mArray = new nsISupports*[mArraySize];
|
|
if (0 == mArray) { // ran out of memory
|
|
mArray = oldArray;
|
|
mArraySize -= kGrowArrayBy;
|
|
return PR_FALSE;
|
|
}
|
|
if (0 != oldArray) { // need to move old data
|
|
if (0 < aIndex) {
|
|
::memcpy(mArray, oldArray, aIndex * sizeof(nsISupports*));
|
|
}
|
|
PRUint32 slide = (mCount - aIndex);
|
|
if (0 < slide) {
|
|
::memcpy(mArray + aIndex + 1, oldArray + aIndex, slide * sizeof(nsISupports*));
|
|
}
|
|
if (oldArray != &(mAutoArray[0])) {
|
|
delete[] oldArray;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
PRUint32 slide = (mCount - aIndex);
|
|
if (0 < slide) {
|
|
::memmove(mArray + aIndex + 1, mArray + aIndex, slide * sizeof(nsISupports*));
|
|
}
|
|
}
|
|
|
|
mArray[aIndex] = aElement;
|
|
NS_ADDREF(aElement);
|
|
mCount++;
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::ReplaceElementAt(nsISupports* aElement, PRUint32 aIndex)
|
|
{
|
|
if ((0 <= aIndex) && (aIndex < mCount)) {
|
|
NS_ADDREF(aElement); // addref first in case it's the same object!
|
|
NS_RELEASE(mArray[aIndex]);
|
|
mArray[aIndex] = aElement;
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::RemoveElementAt(PRUint32 aIndex)
|
|
{
|
|
if ((0 <= aIndex) && (aIndex < mCount)) {
|
|
NS_RELEASE(mArray[aIndex]);
|
|
mCount--;
|
|
PRInt32 slide = (mCount - aIndex);
|
|
if (0 < slide) {
|
|
::memmove(mArray + aIndex, mArray + aIndex + 1,
|
|
slide * sizeof(nsISupports*));
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::RemoveElement(const nsISupports* aElement, PRUint32 aStartIndex)
|
|
{
|
|
if ((0 <= aStartIndex) && (aStartIndex < mCount)) {
|
|
nsISupports** ep = mArray;
|
|
nsISupports** end = ep + mCount;
|
|
while (ep < end) {
|
|
if (*ep == aElement) {
|
|
return RemoveElementAt(PRUint32(ep - mArray));
|
|
}
|
|
ep++;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::RemoveLastElement(const nsISupports* aElement)
|
|
{
|
|
if (0 < mCount) {
|
|
nsISupports** ep = (mArray + mCount);
|
|
while (mArray <= --ep) {
|
|
if (*ep == aElement) {
|
|
return RemoveElementAt(PRUint32(ep - mArray));
|
|
}
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::AppendElements(nsISupportsArray* aElements)
|
|
{
|
|
nsSupportsArray* elements = (nsSupportsArray*)aElements;
|
|
|
|
if (elements && (0 < elements->mCount)) {
|
|
if (mArraySize < (mCount + elements->mCount)) { // need to grow the array
|
|
PRUint32 count = mCount + elements->mCount;
|
|
PRUint32 oldSize = mArraySize;
|
|
while (mArraySize < count) { // ick
|
|
mArraySize += kGrowArrayBy;
|
|
}
|
|
nsISupports** oldArray = mArray;
|
|
mArray = new nsISupports*[mArraySize];
|
|
if (0 == mArray) { // ran out of memory
|
|
mArray = oldArray;
|
|
mArraySize = oldSize;
|
|
return PR_FALSE;
|
|
}
|
|
if (0 != oldArray) { // need to move old data
|
|
if (0 < mCount) {
|
|
::memcpy(mArray, oldArray, mCount);
|
|
}
|
|
if (oldArray != &(mAutoArray[0])) {
|
|
delete[] oldArray;
|
|
}
|
|
}
|
|
}
|
|
|
|
PRUint32 index = 0;
|
|
while (index < elements->mCount) {
|
|
NS_ADDREF(elements->mArray[index]);
|
|
mArray[mCount++] = elements->mArray[index++];
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSupportsArray::Clear(void)
|
|
{
|
|
if (0 < mCount) {
|
|
do {
|
|
--mCount;
|
|
NS_RELEASE(mArray[mCount]);
|
|
} while (0 != mCount);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsSupportsArray::Compact(void)
|
|
{
|
|
if ((mArraySize != mCount) && (kAutoArraySize < mArraySize)) {
|
|
nsISupports** oldArray = mArray;
|
|
PRUint32 oldArraySize = mArraySize;
|
|
if (mCount <= kAutoArraySize) {
|
|
mArray = &(mAutoArray[0]);
|
|
mArraySize = kAutoArraySize;
|
|
}
|
|
else {
|
|
mArray = new nsISupports*[mCount];
|
|
mArraySize = mCount;
|
|
}
|
|
if (0 == mArray) {
|
|
mArray = oldArray;
|
|
mArraySize = oldArraySize;
|
|
return;
|
|
}
|
|
::memcpy(mArray, oldArray, mCount * sizeof(nsISupports*));
|
|
delete[] oldArray;
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::EnumerateForwards(nsISupportsArrayEnumFunc aFunc, void* aData) const
|
|
{
|
|
PRInt32 index = -1;
|
|
PRBool running = PR_TRUE;
|
|
|
|
while (running && (++index < (PRInt32)mCount)) {
|
|
running = (*aFunc)(mArray[index], aData);
|
|
}
|
|
return running;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsSupportsArray::EnumerateBackwards(nsISupportsArrayEnumFunc aFunc, void* aData) const
|
|
{
|
|
PRUint32 index = mCount;
|
|
PRBool running = PR_TRUE;
|
|
|
|
while (running && (0 < index--)) {
|
|
running = (*aFunc)(mArray[index], aData);
|
|
}
|
|
return running;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSupportsArray::Enumerate(nsIEnumerator* *result)
|
|
{
|
|
nsSupportsArrayEnumerator* e = new nsSupportsArrayEnumerator(this);
|
|
if (!e)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
*result = e;
|
|
NS_ADDREF(e);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_COM nsresult
|
|
NS_NewISupportsArray(nsISupportsArray** aInstancePtrResult)
|
|
{
|
|
if (aInstancePtrResult == 0)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsSupportsArray *it = new nsSupportsArray();
|
|
if (0 == it)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
NS_ADDREF(it);
|
|
*aInstancePtrResult = it;
|
|
return NS_OK;
|
|
}
|
|
|