xpcom/string/src/nsTString.cpp
author Benjamin Smedberg <benjamin@smedbergs.us>
Tue, 15 Apr 2008 13:59:01 -0400
changeset 14343 40e4b99f0deaca3707d6993229b1476ad4527c95
parent 3233 ab58bdbde9e03330d3a406d8b95aa3877152cf36
child 16991 70c7932205ee45737f4e6892f00fa8718f5437de
permissions -rw-r--r--
Merge cvs-trunk-mirror to mozilla-central.

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
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 * Contributor(s):
 *   Darin Fisher <darin@meer.net>
 *   Johnny Stenback <jst@mozilla.jstenback.com>
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NS_COM 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;
  }