1 files changed, 37 insertions, 0 deletions
diff --git a/xpcom/string/nsTDependentSubstring.cpp b/xpcom/string/nsTDependentSubstring.cpp
new file mode 100644
index 000000000..b540c028d
--- /dev/null
+++ b/xpcom/string/nsTDependentSubstring.cpp
@@ -0,0 +1,37 @@
+/* -*- 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/. */
+
+void
+nsTDependentSubstring_CharT::Rebind(const substring_type& str,
+                                    uint32_t startPos, uint32_t length)
+{
+  // If we currently own a buffer, release it.
+  Finalize();
+
+  size_type strLength = str.Length();
+
+  if (startPos > strLength) {
+    startPos = strLength;
+  }
+
+  mData = const_cast<char_type*>(static_cast<const char_type*>(str.Data())) + startPos;
+  mLength = XPCOM_MIN(length, strLength - startPos);
+
+  SetDataFlags(F_NONE);
+}
+
+void
+nsTDependentSubstring_CharT::Rebind(const char_type* data, size_type length)
+{
+  NS_ASSERTION(data, "nsTDependentSubstring must wrap a non-NULL buffer");
+
+  // If we currently own a buffer, release it.
+  Finalize();
+
+  mData = const_cast<char_type*>(static_cast<const char_type*>(data));
+  mLength = length;
+  SetDataFlags(F_NONE);
+}