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(
   8     const nsAString& aToWrap)
   9     : nsHtml5UTF16Buffer(const_cast<char16_t*>(aToWrap.BeginReading()),
  10                          aToWrap.Length()) {
  11   MOZ_COUNT_CTOR(nsHtml5DependentUTF16Buffer);
  12 }
  13
  14 nsHtml5DependentUTF16Buffer::~nsHtml5DependentUTF16Buffer() {
  15   MOZ_COUNT_DTOR(nsHtml5DependentUTF16Buffer);
  16 }
  17
  18 already_AddRefed<nsHtml5OwningUTF16Buffer>
  19 nsHtml5DependentUTF16Buffer::FalliblyCopyAsOwningBuffer() {
  20   int32_t newLength = getEnd() - getStart();
  21   RefPtr<nsHtml5OwningUTF16Buffer> newObj =
  22       nsHtml5OwningUTF16Buffer::FalliblyCreate(newLength);
  23   if (!newObj) {
  24     return nullptr;
  25   }
  26   newObj->setEnd(newLength);
  27   memcpy(newObj->getBuffer(), getBuffer() + getStart(),
  28          newLength * sizeof(char16_t));
  29   return newObj.forget();
  30 }