1 files changed, 30 insertions, 0 deletions
diff --git a/parser/html/nsHtml5DependentUTF16Buffer.h b/parser/html/nsHtml5DependentUTF16Buffer.h
new file mode 100644
index 0000000000..3713de8aca
--- /dev/null
+++ b/parser/html/nsHtml5DependentUTF16Buffer.h
@@ -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/. */
+
+#ifndef nsHtml5DependentUTF16Buffer_h
+#define nsHtml5DependentUTF16Buffer_h
+
+#include "nscore.h"
+#include "nsHtml5OwningUTF16Buffer.h"
+
+class MOZ_STACK_CLASS nsHtml5DependentUTF16Buffer : public nsHtml5UTF16Buffer {
+ public:
+  /**
+   * Wraps a string without taking ownership of the buffer. aToWrap MUST NOT
+   * go away or be shortened while nsHtml5DependentUTF16Buffer is in use.
+   */
+  explicit nsHtml5DependentUTF16Buffer(const nsAString& aToWrap);
+
+  ~nsHtml5DependentUTF16Buffer();
+
+  /**
+   * Copies the currently unconsumed part of this buffer into a new
+   * heap-allocated nsHtml5OwningUTF16Buffer. The new object is allocated
+   * with a fallible allocator. If the allocation fails, nullptr is returned.
+   * @return heap-allocated copy or nullptr if memory allocation failed
+   */
+  already_AddRefed<nsHtml5OwningUTF16Buffer> FalliblyCopyAsOwningBuffer();
+};
+
+#endif  // nsHtml5DependentUTF16Buffer_h