1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 #ifndef nsResourceSet_h__
6 #define nsResourceSet_h__
7 
8 #include "nsIRDFResource.h"
9 
10 class nsResourceSet
11 {
12 public:
nsResourceSet()13     nsResourceSet()
14         : mResources(nullptr),
15           mCount(0),
16           mCapacity(0) {
17         MOZ_COUNT_CTOR(nsResourceSet); }
18 
19     nsResourceSet(const nsResourceSet& aResourceSet);
20 
21     nsResourceSet& operator=(const nsResourceSet& aResourceSet);
22 
23     ~nsResourceSet();
24 
25     nsresult Clear();
26     nsresult Add(nsIRDFResource* aProperty);
27     void Remove(nsIRDFResource* aProperty);
28 
29     bool Contains(nsIRDFResource* aProperty) const;
30 
31 protected:
32     nsIRDFResource** mResources;
33     int32_t mCount;
34     int32_t mCapacity;
35 
36 public:
37     class ConstIterator {
38     protected:
39         nsIRDFResource** mCurrent;
40 
41     public:
ConstIterator()42         ConstIterator() : mCurrent(nullptr) {}
43 
ConstIterator(const ConstIterator & aConstIterator)44         ConstIterator(const ConstIterator& aConstIterator)
45             : mCurrent(aConstIterator.mCurrent) {}
46 
47         ConstIterator& operator=(const ConstIterator& aConstIterator) {
48             mCurrent = aConstIterator.mCurrent;
49             return *this; }
50 
51         ConstIterator& operator++() {
52             ++mCurrent;
53             return *this; }
54 
55         ConstIterator operator++(int) {
56             ConstIterator result(*this);
57             ++mCurrent;
58             return result; }
59 
60         /*const*/ nsIRDFResource* operator*() const {
61             return *mCurrent; }
62 
63         /*const*/ nsIRDFResource* operator->() const MOZ_NO_ADDREF_RELEASE_ON_RETURN {
64             return *mCurrent; }
65 
66         bool operator==(const ConstIterator& aConstIterator) const {
67             return mCurrent == aConstIterator.mCurrent; }
68 
69         bool operator!=(const ConstIterator& aConstIterator) const {
70             return mCurrent != aConstIterator.mCurrent; }
71 
72     protected:
ConstIterator(nsIRDFResource ** aProperty)73         explicit ConstIterator(nsIRDFResource** aProperty) : mCurrent(aProperty) {}
74         friend class nsResourceSet;
75     };
76 
First()77     ConstIterator First() const { return ConstIterator(mResources); }
Last()78     ConstIterator Last() const { return ConstIterator(mResources + mCount); }
79 };
80 
81 #endif // nsResourceSet_h__
82 
83