parser/html/nsHtml5DependentUTF16Buffer.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "nsHtml5DependentUTF16Buffer.h"
   6
   7 nsHtml5DependentUTF16Buffer::nsHtml5DependentUTF16Buffer(const nsAString& aToWrap)
   8   : nsHtml5UTF16Buffer(const_cast<PRUnichar*> (aToWrap.BeginReading()),
   9                        aToWrap.Length())
  10 {
  11   MOZ_COUNT_CTOR(nsHtml5DependentUTF16Buffer);
  12 }
  13
  14 nsHtml5DependentUTF16Buffer::~nsHtml5DependentUTF16Buffer()
  15 {
  16   MOZ_COUNT_DTOR(nsHtml5DependentUTF16Buffer);
  17 }
  18
  19 already_AddRefed<nsHtml5OwningUTF16Buffer>
  20 nsHtml5DependentUTF16Buffer::FalliblyCopyAsOwningBuffer()
  21 {
  22   int32_t newLength = getEnd() - getStart();
  23   nsRefPtr<nsHtml5OwningUTF16Buffer> newObj =
  24     nsHtml5OwningUTF16Buffer::FalliblyCreate(newLength);
  25   if (!newObj) {
  26     return nullptr;
  27   }
  28   newObj->setEnd(newLength);
  29   memcpy(newObj->getBuffer(),
  30          getBuffer() + getStart(),
  31          newLength * sizeof(PRUnichar));
  32   return newObj.forget();
  33 }