tor-browser

The Tor Browser
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txExpandedNameMap.cpp (2777B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #include "txExpandedNameMap.h"
      7 
      8 #include "txCore.h"
      9 
     10 class txMapItemComparator {
     11 public:
     12  bool Equals(const txExpandedNameMap_base::MapItem& aItem,
     13              const txExpandedName& aKey) const {
     14    return aItem.mNamespaceID == aKey.mNamespaceID &&
     15           aItem.mLocalName == aKey.mLocalName;
     16  }
     17 };
     18 
     19 /**
     20 * Adds an item, if an item with this key already exists an error is
     21 * returned
     22 * @param  aKey   key for item to add
     23 * @param  aValue value of item to add
     24 * @return errorcode
     25 */
     26 nsresult txExpandedNameMap_base::addItem(const txExpandedName& aKey,
     27                                         void* aValue) {
     28  size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
     29  if (pos != mItems.NoIndex) {
     30    return NS_ERROR_XSLT_ALREADY_SET;
     31  }
     32 
     33  MapItem* item = mItems.AppendElement();
     34  item->mNamespaceID = aKey.mNamespaceID;
     35  item->mLocalName = aKey.mLocalName;
     36  item->mValue = aValue;
     37 
     38  return NS_OK;
     39 }
     40 
     41 /**
     42 * Sets an item, if an item with this key already exists it is overwritten
     43 * with the new value
     44 * @param  aKey   key for item to set
     45 * @param  aValue value of item to set
     46 * @return errorcode
     47 */
     48 nsresult txExpandedNameMap_base::setItem(const txExpandedName& aKey,
     49                                         void* aValue, void** aOldValue) {
     50  *aOldValue = nullptr;
     51  size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
     52  if (pos != mItems.NoIndex) {
     53    *aOldValue = mItems[pos].mValue;
     54    mItems[pos].mValue = aValue;
     55    return NS_OK;
     56  }
     57 
     58  MapItem* item = mItems.AppendElement();
     59  item->mNamespaceID = aKey.mNamespaceID;
     60  item->mLocalName = aKey.mLocalName;
     61  item->mValue = aValue;
     62 
     63  return NS_OK;
     64 }
     65 
     66 /**
     67 * Gets an item
     68 * @param  aKey  key for item to get
     69 * @return item with specified key, or null if no such item exists
     70 */
     71 void* txExpandedNameMap_base::getItem(const txExpandedName& aKey) const {
     72  size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
     73  if (pos != mItems.NoIndex) {
     74    return mItems[pos].mValue;
     75  }
     76 
     77  return nullptr;
     78 }
     79 
     80 /**
     81 * Removes an item, deleting it if the map owns the values
     82 * @param  aKey  key for item to remove
     83 * @return item with specified key, or null if it has been deleted
     84 *         or no such item exists
     85 */
     86 void* txExpandedNameMap_base::removeItem(const txExpandedName& aKey) {
     87  void* value = nullptr;
     88  size_t pos = mItems.IndexOf(aKey, 0, txMapItemComparator());
     89  if (pos != mItems.NoIndex) {
     90    value = mItems[pos].mValue;
     91    mItems.RemoveElementAt(pos);
     92  }
     93 
     94  return value;
     95 }