1 files changed, 30 insertions, 0 deletions
diff --git a/parser/html/nsHtml5DependentUTF16Buffer.cpp b/parser/html/nsHtml5DependentUTF16Buffer.cpp
new file mode 100644
index 0000000000..6372b6923b
--- /dev/null
+++ b/parser/html/nsHtml5DependentUTF16Buffer.cpp
@@ -0,0 +1,30 @@
+/* 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();
+}