diff -r 000000000000 -r 6474c204b198 parser/html/nsHtml5ArrayCopy.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsHtml5ArrayCopy.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2008 Mozilla Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef nsHtml5ArrayCopy_h
+#define nsHtml5ArrayCopy_h
+
+
+class nsString;
+class nsHtml5StackNode;
+class nsHtml5AttributeName;
+
+// Unfortunately, these don't work as template functions because the arguments
+// would need coercion from a template class, which complicates things.
+class nsHtml5ArrayCopy {
+  public:
+
+    static inline void
+    arraycopy(char16_t* source, int32_t sourceOffset, char16_t* target, int32_t targetOffset, int32_t length)
+    {
+      memcpy(&(target[targetOffset]), &(source[sourceOffset]), length * sizeof(char16_t));
+    }
+
+    static inline void
+    arraycopy(char16_t* source, char16_t* target, int32_t length)
+    {
+      memcpy(target, source, length * sizeof(char16_t));
+    }
+
+    static inline void
+    arraycopy(int32_t* source, int32_t* target, int32_t length)
+    {
+      memcpy(target, source, length * sizeof(int32_t));
+    }
+
+    static inline void
+    arraycopy(nsString** source, nsString** target, int32_t length)
+    {
+      memcpy(target, source, length * sizeof(nsString*));
+    }
+
+    static inline void
+    arraycopy(nsHtml5AttributeName** source, nsHtml5AttributeName** target, int32_t length)
+    {
+      memcpy(target, source, length * sizeof(nsHtml5AttributeName*));
+    }
+
+    static inline void
+    arraycopy(nsHtml5StackNode** source, nsHtml5StackNode** target, int32_t length)
+    {
+      memcpy(target, source, length * sizeof(nsHtml5StackNode*));
+    }
+
+    static inline void
+    arraycopy(nsHtml5StackNode** arr, int32_t sourceOffset, int32_t targetOffset, int32_t length)
+    {
+      memmove(&(arr[targetOffset]), &(arr[sourceOffset]), length * sizeof(nsHtml5StackNode*));
+    }
+};
+#endif // nsHtml5ArrayCopy_h