mirror of
https://github.com/classilla/tenfourfox.git
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204 lines
4.7 KiB
C++
204 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef TRANSFRMX_EXPANDEDNAMEMAP_H
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#define TRANSFRMX_EXPANDEDNAMEMAP_H
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#include "nsAutoPtr.h"
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#include "nsError.h"
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#include "txExpandedName.h"
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#include "nsTArray.h"
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class txExpandedNameMap_base {
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protected:
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/**
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* Adds an item, if an item with this key already exists an error is
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* returned
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* @param aKey key for item to add
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* @param aValue value of item to add
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* @return errorcode
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*/
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nsresult addItem(const txExpandedName& aKey, void* aValue);
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/**
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* Sets an item, if an item with this key already exists it is overwritten
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* with the new value
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* @param aKey key for item to set
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* @param aValue value of item to set
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* @return errorcode
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*/
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nsresult setItem(const txExpandedName& aKey, void* aValue,
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void** aOldValue);
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/**
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* Gets an item
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* @param aKey key for item to get
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* @return item with specified key, or null if no such item exists
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*/
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void* getItem(const txExpandedName& aKey) const;
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/**
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* Removes an item, deleting it if the map owns the values
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* @param aKey key for item to remove
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* @return item with specified key, or null if it has been deleted
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* or no such item exists
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*/
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void* removeItem(const txExpandedName& aKey);
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/**
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* Clears the items
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*/
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void clearItems()
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{
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mItems.Clear();
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}
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class iterator_base {
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public:
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explicit iterator_base(txExpandedNameMap_base& aMap)
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: mMap(aMap),
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mCurrentPos(uint32_t(-1))
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{
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}
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bool next()
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{
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return ++mCurrentPos < mMap.mItems.Length();
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}
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const txExpandedName key()
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{
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NS_ASSERTION(mCurrentPos < mMap.mItems.Length(),
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"invalid position in txExpandedNameMap::iterator");
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return txExpandedName(mMap.mItems[mCurrentPos].mNamespaceID,
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mMap.mItems[mCurrentPos].mLocalName);
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}
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protected:
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void* itemValue()
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{
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NS_ASSERTION(mCurrentPos < mMap.mItems.Length(),
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"invalid position in txExpandedNameMap::iterator");
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return mMap.mItems[mCurrentPos].mValue;
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}
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private:
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txExpandedNameMap_base& mMap;
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uint32_t mCurrentPos;
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};
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friend class iterator_base;
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friend class txMapItemComparator;
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struct MapItem {
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int32_t mNamespaceID;
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nsCOMPtr<nsIAtom> mLocalName;
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void* mValue;
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};
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nsTArray<MapItem> mItems;
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};
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template<class E>
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class txExpandedNameMap : public txExpandedNameMap_base
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{
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public:
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nsresult add(const txExpandedName& aKey, E* aValue)
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{
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return addItem(aKey, (void*)aValue);
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}
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nsresult set(const txExpandedName& aKey, E* aValue)
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{
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void* oldValue;
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return setItem(aKey, (void*)aValue, &oldValue);
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}
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E* get(const txExpandedName& aKey) const
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{
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return (E*)getItem(aKey);
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}
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E* remove(const txExpandedName& aKey)
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{
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return (E*)removeItem(aKey);
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}
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void clear()
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{
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clearItems();
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}
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class iterator : public iterator_base
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{
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public:
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explicit iterator(txExpandedNameMap& aMap)
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: iterator_base(aMap)
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{
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}
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E* value()
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{
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return (E*)itemValue();
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}
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};
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};
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template<class E>
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class txOwningExpandedNameMap : public txExpandedNameMap_base
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{
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public:
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~txOwningExpandedNameMap()
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{
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clear();
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}
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nsresult add(const txExpandedName& aKey, E* aValue)
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{
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return addItem(aKey, (void*)aValue);
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}
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nsresult set(const txExpandedName& aKey, E* aValue)
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{
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nsAutoPtr<E> oldValue;
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return setItem(aKey, (void*)aValue, getter_Transfers(oldValue));
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}
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E* get(const txExpandedName& aKey) const
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{
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return (E*)getItem(aKey);
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}
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void remove(const txExpandedName& aKey)
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{
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delete (E*)removeItem(aKey);
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}
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void clear()
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{
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uint32_t i, len = mItems.Length();
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for (i = 0; i < len; ++i) {
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delete (E*)mItems[i].mValue;
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}
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clearItems();
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}
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class iterator : public iterator_base
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{
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public:
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explicit iterator(txOwningExpandedNameMap& aMap)
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: iterator_base(aMap)
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{
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}
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E* value()
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{
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return (E*)itemValue();
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}
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};
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};
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#endif //TRANSFRMX_EXPANDEDNAMEMAP_H
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