tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

nsHtml5OwningUTF16Buffer.cpp (1737B)

      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 "nsHtml5OwningUTF16Buffer.h"
      6 
      7 #include "mozilla/Span.h"
      8 
      9 using namespace mozilla;
     10 
     11 nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(char16_t* aBuffer)
     12    : nsHtml5UTF16Buffer(aBuffer, 0), next(nullptr), key(nullptr) {}
     13 
     14 nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(void* aKey)
     15    : nsHtml5UTF16Buffer(nullptr, 0), next(nullptr), key(aKey) {}
     16 
     17 nsHtml5OwningUTF16Buffer::~nsHtml5OwningUTF16Buffer() {
     18  DeleteBuffer();
     19 
     20  // This is to avoid dtor recursion on 'next', bug 706932.
     21  RefPtr<nsHtml5OwningUTF16Buffer> tail;
     22  tail.swap(next);
     23  while (tail && tail->mRefCnt == 1) {
     24    RefPtr<nsHtml5OwningUTF16Buffer> tmp;
     25    tmp.swap(tail->next);
     26    tail.swap(tmp);
     27  }
     28 }
     29 
     30 // static
     31 already_AddRefed<nsHtml5OwningUTF16Buffer>
     32 nsHtml5OwningUTF16Buffer::FalliblyCreate(int32_t aLength) {
     33  char16_t* newBuf = new (mozilla::fallible) char16_t[aLength];
     34  if (!newBuf) {
     35    return nullptr;
     36  }
     37  RefPtr<nsHtml5OwningUTF16Buffer> newObj =
     38      new (mozilla::fallible) nsHtml5OwningUTF16Buffer(newBuf);
     39  if (!newObj) {
     40    delete[] newBuf;
     41    return nullptr;
     42  }
     43  return newObj.forget();
     44 }
     45 
     46 void nsHtml5OwningUTF16Buffer::Swap(nsHtml5OwningUTF16Buffer* aOther) {
     47  nsHtml5UTF16Buffer::Swap(aOther);
     48 }
     49 
     50 Span<char16_t> nsHtml5OwningUTF16Buffer::TailAsSpan(int32_t aBufferSize) {
     51  MOZ_ASSERT(aBufferSize >= getEnd());
     52  return {getBuffer() + getEnd(), static_cast<size_t>(aBufferSize - getEnd())};
     53 }
     54 
     55 void nsHtml5OwningUTF16Buffer::AdvanceEnd(int32_t aNumberOfCodeUnits) {
     56  setEnd(getEnd() + aNumberOfCodeUnits);
     57 }