netwerk/cache2/CacheIndexIterator.h

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1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 #ifndef CacheIndexIterator__h__
6 #define CacheIndexIterator__h__
7
8 #include "nsTArray.h"
9 #include "nsCOMPtr.h"
10 #include "nsAutoPtr.h"
11 #include "mozilla/SHA1.h"
12
13 namespace mozilla {
14 namespace net {
15
16 class CacheIndex;
17 struct CacheIndexRecord;
18
19 class CacheIndexIterator
20 {
21 public:
22 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CacheIndexIterator)
23
24 CacheIndexIterator(CacheIndex *aIndex, bool aAddNew);
25 virtual ~CacheIndexIterator();
26
27 // Returns a hash of a next entry. If there is no entry NS_ERROR_NOT_AVAILABLE
28 // is returned and the iterator is closed. Other error is returned when the
29 // iterator is closed for other reason, e.g. shutdown.
30 nsresult GetNextHash(SHA1Sum::Hash *aHash);
31
32 // Closes the iterator. This means the iterator is removed from the list of
33 // iterators in CacheIndex.
34 nsresult Close();
35
36 protected:
37 friend class CacheIndex;
38
39 nsresult CloseInternal(nsresult aStatus);
40
41 bool ShouldBeNewAdded() { return mAddNew; }
42 virtual void AddRecord(CacheIndexRecord *aRecord);
43 virtual void AddRecords(const nsTArray<CacheIndexRecord *> &aRecords);
44 bool RemoveRecord(CacheIndexRecord *aRecord);
45 bool ReplaceRecord(CacheIndexRecord *aOldRecord,
46 CacheIndexRecord *aNewRecord);
47
48 nsresult mStatus;
49 nsRefPtr<CacheIndex> mIndex;
50 nsTArray<CacheIndexRecord *> mRecords;
51 bool mAddNew;
52 };
53
54 } // net
55 } // mozilla
56
57 #endif

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