import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/xul/templates/nsResourceSet.h

@@ -0,0 +1,82 @@
+/* -*- 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 nsResourceSet_h__
+#define nsResourceSet_h__
+
+#include "nsIRDFResource.h"
+
+class nsResourceSet
+{
+public:
+    nsResourceSet()
+        : mResources(nullptr),
+          mCount(0),
+          mCapacity(0) {
+        MOZ_COUNT_CTOR(nsResourceSet); }
+
+    nsResourceSet(const nsResourceSet& aResourceSet);
+
+    nsResourceSet& operator=(const nsResourceSet& aResourceSet);
+    
+    ~nsResourceSet();
+
+    nsresult Clear();
+    nsresult Add(nsIRDFResource* aProperty);
+    void Remove(nsIRDFResource* aProperty);
+
+    bool Contains(nsIRDFResource* aProperty) const;
+
+protected:
+    nsIRDFResource** mResources;
+    int32_t mCount;
+    int32_t mCapacity;
+
+public:
+    class ConstIterator {
+    protected:
+        nsIRDFResource** mCurrent;
+
+    public:
+        ConstIterator() : mCurrent(nullptr) {}
+
+        ConstIterator(const ConstIterator& aConstIterator)
+            : mCurrent(aConstIterator.mCurrent) {}
+
+        ConstIterator& operator=(const ConstIterator& aConstIterator) {
+            mCurrent = aConstIterator.mCurrent;
+            return *this; }
+
+        ConstIterator& operator++() {
+            ++mCurrent;
+            return *this; }
+
+        ConstIterator operator++(int) {
+            ConstIterator result(*this);
+            ++mCurrent;
+            return result; }
+
+        /*const*/ nsIRDFResource* operator*() const {
+            return *mCurrent; }
+
+        /*const*/ nsIRDFResource* operator->() const MOZ_NO_ADDREF_RELEASE_ON_RETURN {
+            return *mCurrent; }
+
+        bool operator==(const ConstIterator& aConstIterator) const {
+            return mCurrent == aConstIterator.mCurrent; }
+
+        bool operator!=(const ConstIterator& aConstIterator) const {
+            return mCurrent != aConstIterator.mCurrent; }
+
+    protected:
+        explicit ConstIterator(nsIRDFResource** aProperty) : mCurrent(aProperty) {}
+        friend class nsResourceSet;
+    };
+
+    ConstIterator First() const { return ConstIterator(mResources); }
+    ConstIterator Last() const { return ConstIterator(mResources + mCount); }
+};
+
+#endif // nsResourceSet_h__
+