1 files changed, 47 insertions, 0 deletions
diff --git a/xpcom/string/nsTString.cpp b/xpcom/string/nsTString.cpp
new file mode 100644
index 0000000000..13dd2628ef
--- /dev/null
+++ b/xpcom/string/nsTString.cpp
@@ -0,0 +1,47 @@
+/* -*- 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/. */
+
+nsTAdoptingString_CharT&
+nsTAdoptingString_CharT::operator=(const self_type& str)
+{
+  // This'll violate the constness of this argument, that's just
+  // the nature of this class...
+  self_type* mutable_str = const_cast<self_type*>(&str);
+
+  if (str.mFlags & F_OWNED) {
+    // We want to do what Adopt() does, but without actually incrementing
+    // the Adopt count.  Note that we can be a little more straightforward
+    // about this than Adopt() is, because we know that str.mData is
+    // non-null.  Should we be able to assert that str is not void here?
+    NS_ASSERTION(str.mData, "String with null mData?");
+    Finalize();
+    mData = str.mData;
+    mLength = str.mLength;
+    SetDataFlags(F_TERMINATED | F_OWNED);
+
+    // Make str forget the buffer we just took ownership of.
+    new (mutable_str) self_type();
+  } else {
+    Assign(str);
+
+    mutable_str->Truncate();
+  }
+
+  return *this;
+}
+
+void
+nsTString_CharT::Rebind(const char_type* data, size_type length)
+{
+  // If we currently own a buffer, release it.
+  Finalize();
+
+  mData = const_cast<char_type*>(data);
+  mLength = length;
+  SetDataFlags(F_TERMINATED);
+  AssertValidDependentString();
+}
+