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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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104
dom/xslt/base/txExpandedNameMap.cpp Normal file
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "txExpandedNameMap.h"
#include "txCore.h"
class txMapItemComparator
{
public:
bool Equals(const txExpandedNameMap_base::MapItem& aItem,
const txExpandedName& aKey) const {
return aItem.mNamespaceID == aKey.mNamespaceID &&
aItem.mLocalName == aKey.mLocalName;
}
};
/**
* Adds an item, if an item with this key already exists an error is
* returned
* @param aKey key for item to add
* @param aValue value of item to add
* @return errorcode
*/
nsresult txExpandedNameMap_base::addItem(const txExpandedName& aKey,
void* aValue)
{
size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
if (pos != mItems.NoIndex) {
return NS_ERROR_XSLT_ALREADY_SET;
}
MapItem* item = mItems.AppendElement();
NS_ENSURE_TRUE(item, NS_ERROR_OUT_OF_MEMORY);
item->mNamespaceID = aKey.mNamespaceID;
item->mLocalName = aKey.mLocalName;
item->mValue = aValue;
return NS_OK;
}
/**
* Sets an item, if an item with this key already exists it is overwritten
* with the new value
* @param aKey key for item to set
* @param aValue value of item to set
* @return errorcode
*/
nsresult txExpandedNameMap_base::setItem(const txExpandedName& aKey,
void* aValue,
void** aOldValue)
{
*aOldValue = nullptr;
size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
if (pos != mItems.NoIndex) {
*aOldValue = mItems[pos].mValue;
mItems[pos].mValue = aValue;
return NS_OK;
}
MapItem* item = mItems.AppendElement();
NS_ENSURE_TRUE(item, NS_ERROR_OUT_OF_MEMORY);
item->mNamespaceID = aKey.mNamespaceID;
item->mLocalName = aKey.mLocalName;
item->mValue = aValue;
return NS_OK;
}
/**
* Gets an item
* @param aKey key for item to get
* @return item with specified key, or null if no such item exists
*/
void* txExpandedNameMap_base::getItem(const txExpandedName& aKey) const
{
size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
if (pos != mItems.NoIndex) {
return mItems[pos].mValue;
}
return nullptr;
}
/**
* Removes an item, deleting it if the map owns the values
* @param aKey key for item to remove
* @return item with specified key, or null if it has been deleted
* or no such item exists
*/
void* txExpandedNameMap_base::removeItem(const txExpandedName& aKey)
{
void* value = nullptr;
size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
if (pos != mItems.NoIndex) {
value = mItems[pos].mValue;
mItems.RemoveElementAt(pos);
}
return value;
}