1 files changed, 31 insertions, 0 deletions
diff --git a/xpcom/glue/nsTObserverArray.cpp b/xpcom/glue/nsTObserverArray.cpp
new file mode 100644
index 0000000000..dd68631f49
--- /dev/null
+++ b/xpcom/glue/nsTObserverArray.cpp
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "nsTObserverArray.h"
+
+void
+nsTObserverArray_base::AdjustIterators(index_type aModPos,
+                                       diff_type aAdjustment)
+{
+  NS_PRECONDITION(aAdjustment == -1 || aAdjustment == 1, "invalid adjustment");
+  Iterator_base* iter = mIterators;
+  while (iter) {
+    if (iter->mPosition > aModPos) {
+      iter->mPosition += aAdjustment;
+    }
+    iter = iter->mNext;
+  }
+}
+
+void
+nsTObserverArray_base::ClearIterators()
+{
+  Iterator_base* iter = mIterators;
+  while (iter) {
+    iter->mPosition = 0;
+    iter = iter->mNext;
+  }
+}