parser/html/nsHtml5DependentUTF16Buffer.cpp
author Andrea Marchesini <amarchesini@mozilla.com>
Wed, 09 Jan 2019 12:16:04 +0100
changeset 510141 a11f752f828ceca6aed6cda69fc336f4624434fc
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1513298 - Fingerprinting url-classifier feature, r=dimi

/* 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/. */

#include "nsHtml5DependentUTF16Buffer.h"

nsHtml5DependentUTF16Buffer::nsHtml5DependentUTF16Buffer(
    const nsAString& aToWrap)
    : nsHtml5UTF16Buffer(const_cast<char16_t*>(aToWrap.BeginReading()),
                         aToWrap.Length()) {
  MOZ_COUNT_CTOR(nsHtml5DependentUTF16Buffer);
}

nsHtml5DependentUTF16Buffer::~nsHtml5DependentUTF16Buffer() {
  MOZ_COUNT_DTOR(nsHtml5DependentUTF16Buffer);
}

already_AddRefed<nsHtml5OwningUTF16Buffer>
nsHtml5DependentUTF16Buffer::FalliblyCopyAsOwningBuffer() {
  int32_t newLength = getEnd() - getStart();
  RefPtr<nsHtml5OwningUTF16Buffer> newObj =
      nsHtml5OwningUTF16Buffer::FalliblyCreate(newLength);
  if (!newObj) {
    return nullptr;
  }
  newObj->setEnd(newLength);
  memcpy(newObj->getBuffer(), getBuffer() + getStart(),
         newLength * sizeof(char16_t));
  return newObj.forget();
}