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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
commit16f504a9dca3fe3b70568f67b7d41241ae485288 (patch)
treec60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/xpcom18a4/xpcom/ds/nsCOMArray.cpp
parentInitial commit. (diff)
downloadvirtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.tar.xz
virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.zip
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/ds/nsCOMArray.cpp')
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1 files changed, 162 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/ds/nsCOMArray.cpp b/src/libs/xpcom18a4/xpcom/ds/nsCOMArray.cpp
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is a COM aware array class.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corp.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * Alec Flett <alecf@netscape.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsCOMArray.h"
+#include "nsCOMPtr.h"
+
+PR_STATIC_CALLBACK(PRBool) ReleaseObjects(void* aElement, void*);
+
+// implementations of non-trivial methods in nsCOMArray_base
+
+// copy constructor - we can't just memcpy here, because
+// we have to make sure we own our own array buffer, and that each
+// object gets another AddRef()
+nsCOMArray_base::nsCOMArray_base(const nsCOMArray_base& aOther)
+{
+ // make sure we do only one allocation
+ mArray.SizeTo(aOther.Count());
+ AppendObjects(aOther);
+}
+
+nsCOMArray_base::~nsCOMArray_base()
+{
+ PRInt32 count = Count(), i;
+ for (i = 0; i < count; ++i) {
+ nsISupports* obj = ObjectAt(i);
+ NS_IF_RELEASE(obj);
+ }
+}
+
+PRInt32
+nsCOMArray_base::IndexOfObject(nsISupports* aObject) const {
+ NS_ENSURE_TRUE(aObject, -1);
+ nsCOMPtr<nsISupports> supports = do_QueryInterface(aObject);
+ NS_ENSURE_TRUE(supports, -1);
+
+ PRInt32 i, count;
+ PRInt32 retval = -1;
+ count = mArray.Count();
+ for (i = 0; i < count; ++i) {
+ nsCOMPtr<nsISupports> arrayItem =
+ do_QueryInterface(NS_REINTERPRET_CAST(nsISupports*,mArray.ElementAt(i)));
+ if (arrayItem == supports) {
+ retval = i;
+ break;
+ }
+ }
+ return retval;
+}
+
+PRBool
+nsCOMArray_base::InsertObjectAt(nsISupports* aObject, PRInt32 aIndex) {
+ PRBool result = mArray.InsertElementAt(aObject, aIndex);
+ if (result)
+ NS_IF_ADDREF(aObject);
+ return result;
+}
+
+PRBool
+nsCOMArray_base::InsertObjectsAt(const nsCOMArray_base& aObjects, PRInt32 aIndex) {
+ PRBool result = mArray.InsertElementsAt(aObjects.mArray, aIndex);
+ if (result) {
+ // need to addref all these
+ PRInt32 count = aObjects.Count();
+ for (PRInt32 i = 0; i < count; ++i) {
+ NS_IF_ADDREF(aObjects.ObjectAt(i));
+ }
+ }
+ return result;
+}
+
+PRBool
+nsCOMArray_base::ReplaceObjectAt(nsISupports* aObject, PRInt32 aIndex)
+{
+ // its ok if oldObject is null here
+ nsISupports *oldObject =
+ NS_REINTERPRET_CAST(nsISupports*, mArray.SafeElementAt(aIndex));
+
+ PRBool result = mArray.ReplaceElementAt(aObject, aIndex);
+
+ // ReplaceElementAt could fail, such as if the array grows
+ // so only release the existing object if the replacement succeeded
+ if (result) {
+ // Make sure to addref first, in case aObject == oldObject
+ NS_IF_ADDREF(aObject);
+ NS_IF_RELEASE(oldObject);
+ }
+ return result;
+}
+
+PRBool
+nsCOMArray_base::RemoveObject(nsISupports *aObject)
+{
+ PRBool result = mArray.RemoveElement(aObject);
+ if (result)
+ NS_IF_RELEASE(aObject);
+ return result;
+}
+
+PRBool
+nsCOMArray_base::RemoveObjectAt(PRInt32 aIndex)
+{
+ nsISupports* element = ObjectAt(aIndex);
+ if (element) {
+ PRBool result = mArray.RemoveElementAt(aIndex);
+ if (result)
+ NS_IF_RELEASE(element);
+ return result;
+ }
+ return PR_FALSE;
+}
+
+// useful for destructors
+PRBool
+ReleaseObjects(void* aElement, void*)
+{
+ nsISupports* element = NS_STATIC_CAST(nsISupports*, aElement);
+ NS_IF_RELEASE(element);
+ return PR_TRUE;
+}
+
+void
+nsCOMArray_base::Clear()
+{
+ mArray.EnumerateForwards(ReleaseObjects, nsnull);
+ mArray.Clear();
+}
+