1 files changed, 57 insertions, 0 deletions
diff --git a/parser/html/nsHtml5OwningUTF16Buffer.cpp b/parser/html/nsHtml5OwningUTF16Buffer.cpp
new file mode 100644
index 0000000000..eec07a29ac
--- /dev/null
+++ b/parser/html/nsHtml5OwningUTF16Buffer.cpp
@@ -0,0 +1,57 @@
+/* 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);
+}