gecko/parser/html/nsHtml5OwningUTF16Buffer.cpp

105 lines
3.3 KiB
C++

/* ***** 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 HTML Parser C++ Translator code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Henri Sivonen <hsivonen@iki.fi>
*
* 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 "nsHtml5OwningUTF16Buffer.h"
nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(PRUnichar* aBuffer)
: nsHtml5UTF16Buffer(aBuffer, 0),
next(nsnull),
key(nsnull)
{
MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer);
}
nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(void* aKey)
: nsHtml5UTF16Buffer(nsnull, 0),
next(nsnull),
key(aKey)
{
MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer);
}
nsHtml5OwningUTF16Buffer::~nsHtml5OwningUTF16Buffer()
{
MOZ_COUNT_DTOR(nsHtml5OwningUTF16Buffer);
DeleteBuffer();
}
// static
already_AddRefed<nsHtml5OwningUTF16Buffer>
nsHtml5OwningUTF16Buffer::FalliblyCreate(PRInt32 aLength)
{
const mozilla::fallible_t fallible = mozilla::fallible_t();
PRUnichar* newBuf = new (fallible) PRUnichar[aLength];
if (!newBuf) {
return nsnull;
}
nsRefPtr<nsHtml5OwningUTF16Buffer> newObj =
new (fallible) nsHtml5OwningUTF16Buffer(newBuf);
if (!newObj) {
delete[] newBuf;
return nsnull;
}
return newObj.forget();
}
// Not using macros for AddRef and Release in order to be able to refcount on
// and create on different threads.
nsrefcnt
nsHtml5OwningUTF16Buffer::AddRef()
{
NS_PRECONDITION(PRInt32(mRefCnt) >= 0, "Illegal refcount.");
++mRefCnt;
NS_LOG_ADDREF(this, mRefCnt, "nsHtml5OwningUTF16Buffer", sizeof(*this));
return mRefCnt;
}
nsrefcnt
nsHtml5OwningUTF16Buffer::Release()
{
NS_PRECONDITION(0 != mRefCnt, "Release without AddRef.");
--mRefCnt;
NS_LOG_RELEASE(this, mRefCnt, "nsHtml5OwningUTF16Buffer");
if (mRefCnt == 0) {
mRefCnt = 1; /* stabilize */
delete this;
return 0;
}
return mRefCnt;
}