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/* 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 "nsHtml5OwningUTF16Buffer.h"
#include "mozilla/Span.h"
using namespace mozilla;
nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(char16_t* aBuffer)
: nsHtml5UTF16Buffer(aBuffer, 0), next(nullptr), key(nullptr) {}
nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(void* aKey)
: nsHtml5UTF16Buffer(nullptr, 0), next(nullptr), key(aKey) {}
nsHtml5OwningUTF16Buffer::~nsHtml5OwningUTF16Buffer() {
DeleteBuffer();
// This is to avoid dtor recursion on 'next', bug 706932.
RefPtr<nsHtml5OwningUTF16Buffer> tail;
tail.swap(next);
while (tail && tail->mRefCnt == 1) {
RefPtr<nsHtml5OwningUTF16Buffer> tmp;
tmp.swap(tail->next);
tail.swap(tmp);
}
}
// static
already_AddRefed<nsHtml5OwningUTF16Buffer>
nsHtml5OwningUTF16Buffer::FalliblyCreate(int32_t aLength) {
char16_t* newBuf = new (mozilla::fallible) char16_t[aLength];
if (!newBuf) {
return nullptr;
}
RefPtr<nsHtml5OwningUTF16Buffer> newObj =
new (mozilla::fallible) nsHtml5OwningUTF16Buffer(newBuf);
if (!newObj) {
delete[] newBuf;
return nullptr;
}
return newObj.forget();
}
void nsHtml5OwningUTF16Buffer::Swap(nsHtml5OwningUTF16Buffer* aOther) {
nsHtml5UTF16Buffer::Swap(aOther);
}
Span<char16_t> nsHtml5OwningUTF16Buffer::TailAsSpan(int32_t aBufferSize) {
MOZ_ASSERT(aBufferSize >= getEnd());
return {getBuffer() + getEnd(), static_cast<size_t>(aBufferSize - getEnd())};
}
void nsHtml5OwningUTF16Buffer::AdvanceEnd(int32_t aNumberOfCodeUnits) {
setEnd(getEnd() + aNumberOfCodeUnits);
}
// Not using macros for AddRef and Release in order to be able to refcount on
// and create on different threads.
nsrefcnt nsHtml5OwningUTF16Buffer::AddRef() {
MOZ_ASSERT(int32_t(mRefCnt) >= 0, "Illegal refcount.");
++mRefCnt;
NS_LOG_ADDREF(this, mRefCnt, "nsHtml5OwningUTF16Buffer", sizeof(*this));
return mRefCnt;
}
nsrefcnt nsHtml5OwningUTF16Buffer::Release() {
MOZ_ASSERT(0 != mRefCnt, "Release without AddRef.");
--mRefCnt;
NS_LOG_RELEASE(this, mRefCnt, "nsHtml5OwningUTF16Buffer");
if (mRefCnt == 0) {
mRefCnt = 1; /* stabilize */
delete this;
return 0;
}
return mRefCnt;
}
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