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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/. */
#ifndef TRANSFRMX_EXPANDEDNAMEMAP_H
#define TRANSFRMX_EXPANDEDNAMEMAP_H
#include "nsAutoPtr.h"
#include "nsError.h"
#include "txExpandedName.h"
#include "nsTArray.h"
class txExpandedNameMap_base {
protected:
/**
* 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 addItem(const txExpandedName& aKey, void* aValue);
/**
* 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 setItem(const txExpandedName& aKey, void* aValue,
void** aOldValue);
/**
* Gets an item
* @param aKey key for item to get
* @return item with specified key, or null if no such item exists
*/
void* getItem(const txExpandedName& aKey) const;
/**
* 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* removeItem(const txExpandedName& aKey);
/**
* Clears the items
*/
void clearItems()
{
mItems.Clear();
}
class iterator_base {
public:
explicit iterator_base(txExpandedNameMap_base& aMap)
: mMap(aMap),
mCurrentPos(uint32_t(-1))
{
}
bool next()
{
return ++mCurrentPos < mMap.mItems.Length();
}
const txExpandedName key()
{
NS_ASSERTION(mCurrentPos < mMap.mItems.Length(),
"invalid position in txExpandedNameMap::iterator");
return txExpandedName(mMap.mItems[mCurrentPos].mNamespaceID,
mMap.mItems[mCurrentPos].mLocalName);
}
protected:
void* itemValue()
{
NS_ASSERTION(mCurrentPos < mMap.mItems.Length(),
"invalid position in txExpandedNameMap::iterator");
return mMap.mItems[mCurrentPos].mValue;
}
private:
txExpandedNameMap_base& mMap;
uint32_t mCurrentPos;
};
friend class iterator_base;
friend class txMapItemComparator;
struct MapItem {
int32_t mNamespaceID;
nsCOMPtr<nsIAtom> mLocalName;
void* mValue;
};
nsTArray<MapItem> mItems;
};
template<class E>
class txExpandedNameMap : public txExpandedNameMap_base
{
public:
nsresult add(const txExpandedName& aKey, E* aValue)
{
return addItem(aKey, (void*)aValue);
}
nsresult set(const txExpandedName& aKey, E* aValue)
{
void* oldValue;
return setItem(aKey, (void*)aValue, &oldValue);
}
E* get(const txExpandedName& aKey) const
{
return (E*)getItem(aKey);
}
E* remove(const txExpandedName& aKey)
{
return (E*)removeItem(aKey);
}
void clear()
{
clearItems();
}
class iterator : public iterator_base
{
public:
explicit iterator(txExpandedNameMap& aMap)
: iterator_base(aMap)
{
}
E* value()
{
return (E*)itemValue();
}
};
};
template<class E>
class txOwningExpandedNameMap : public txExpandedNameMap_base
{
public:
~txOwningExpandedNameMap()
{
clear();
}
nsresult add(const txExpandedName& aKey, E* aValue)
{
return addItem(aKey, (void*)aValue);
}
nsresult set(const txExpandedName& aKey, E* aValue)
{
nsAutoPtr<E> oldValue;
return setItem(aKey, (void*)aValue, getter_Transfers(oldValue));
}
E* get(const txExpandedName& aKey) const
{
return (E*)getItem(aKey);
}
void remove(const txExpandedName& aKey)
{
delete (E*)removeItem(aKey);
}
void clear()
{
uint32_t i, len = mItems.Length();
for (i = 0; i < len; ++i) {
delete (E*)mItems[i].mValue;
}
clearItems();
}
class iterator : public iterator_base
{
public:
explicit iterator(txOwningExpandedNameMap& aMap)
: iterator_base(aMap)
{
}
E* value()
{
return (E*)itemValue();
}
};
};
#endif //TRANSFRMX_EXPANDEDNAMEMAP_H
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